/* HTTP support.
- Copyright (C) 1995, 1996, 1997, 1998, 2000 Free Software Foundation, Inc.
+ Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
+ 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
-This file is part of Wget.
+This file is part of GNU Wget.
-This program is free software; you can redistribute it and/or modify
+GNU Wget is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
-(at your option) any later version.
+the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
-This program is distributed in the hope that it will be useful,
+GNU Wget is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
-#include <config.h>
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
+
+#include "wget.h"
#include <stdio.h>
#include <stdlib.h>
-#include <sys/types.h>
-#ifdef HAVE_STRING_H
-# include <string.h>
-#else
-# include <strings.h>
-#endif
+#include <string.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include <assert.h>
#include <errno.h>
-#if TIME_WITH_SYS_TIME
-# include <sys/time.h>
-# include <time.h>
-#else
-# if HAVE_SYS_TIME_H
-# include <sys/time.h>
-# else
-# include <time.h>
-# endif
-#endif
+#include <time.h>
+#include <locale.h>
-#ifdef WINDOWS
-# include <winsock.h>
-#else
-# include <netdb.h> /* for h_errno */
-#endif
-
-#include "wget.h"
+#include "hash.h"
+#include "http.h"
#include "utils.h"
#include "url.h"
#include "host.h"
-#include "rbuf.h"
#include "retr.h"
-#include "headers.h"
#include "connect.h"
-#include "fnmatch.h"
#include "netrc.h"
-#if USE_DIGEST
-# include "md5.h"
-#endif
#ifdef HAVE_SSL
-# include "gen_sslfunc.h"
-#endif /* HAVE_SSL */
+# include "ssl.h"
+#endif
+#ifdef ENABLE_NTLM
+# include "http-ntlm.h"
+#endif
#include "cookies.h"
+#ifdef ENABLE_DIGEST
+# include "gen-md5.h"
+#endif
+#include "convert.h"
+#include "spider.h"
+
+#ifdef TESTING
+#include "test.h"
+#endif
+
+#ifdef __VMS
+# include "vms.h"
+#endif /* def __VMS */
extern char *version_string;
-#ifndef errno
-extern int errno;
-#endif
-#ifndef h_errno
-# ifndef __CYGWIN__
-extern int h_errno;
-# endif
+/* Forward decls. */
+struct http_stat;
+static char *create_authorization_line (const char *, const char *,
+ const char *, const char *,
+ const char *, bool *);
+static char *basic_authentication_encode (const char *, const char *);
+static bool known_authentication_scheme_p (const char *, const char *);
+static void ensure_extension (struct http_stat *, const char *, int *);
+static void load_cookies (void);
+
+#ifndef MIN
+# define MIN(x, y) ((x) > (y) ? (y) : (x))
#endif
+
\f
-static int cookies_loaded_p;
+static bool cookies_loaded_p;
+static struct cookie_jar *wget_cookie_jar;
#define TEXTHTML_S "text/html"
-#define HTTP_ACCEPT "*/*"
+#define TEXTXHTML_S "application/xhtml+xml"
+#define TEXTCSS_S "text/css"
/* Some status code validation macros: */
#define H_20X(x) (((x) >= 200) && ((x) < 300))
#define H_PARTIAL(x) ((x) == HTTP_STATUS_PARTIAL_CONTENTS)
-#define H_REDIRECTED(x) (((x) == HTTP_STATUS_MOVED_PERMANENTLY) \
- || ((x) == HTTP_STATUS_MOVED_TEMPORARILY))
+#define H_REDIRECTED(x) ((x) == HTTP_STATUS_MOVED_PERMANENTLY \
+ || (x) == HTTP_STATUS_MOVED_TEMPORARILY \
+ || (x) == HTTP_STATUS_SEE_OTHER \
+ || (x) == HTTP_STATUS_TEMPORARY_REDIRECT)
/* HTTP/1.0 status codes from RFC1945, provided for reference. */
/* Successful 2xx. */
-#define HTTP_STATUS_OK 200
-#define HTTP_STATUS_CREATED 201
-#define HTTP_STATUS_ACCEPTED 202
-#define HTTP_STATUS_NO_CONTENT 204
-#define HTTP_STATUS_PARTIAL_CONTENTS 206
+#define HTTP_STATUS_OK 200
+#define HTTP_STATUS_CREATED 201
+#define HTTP_STATUS_ACCEPTED 202
+#define HTTP_STATUS_NO_CONTENT 204
+#define HTTP_STATUS_PARTIAL_CONTENTS 206
/* Redirection 3xx. */
-#define HTTP_STATUS_MULTIPLE_CHOICES 300
-#define HTTP_STATUS_MOVED_PERMANENTLY 301
-#define HTTP_STATUS_MOVED_TEMPORARILY 302
-#define HTTP_STATUS_NOT_MODIFIED 304
+#define HTTP_STATUS_MULTIPLE_CHOICES 300
+#define HTTP_STATUS_MOVED_PERMANENTLY 301
+#define HTTP_STATUS_MOVED_TEMPORARILY 302
+#define HTTP_STATUS_SEE_OTHER 303 /* from HTTP/1.1 */
+#define HTTP_STATUS_NOT_MODIFIED 304
+#define HTTP_STATUS_TEMPORARY_REDIRECT 307 /* from HTTP/1.1 */
/* Client error 4xx. */
-#define HTTP_STATUS_BAD_REQUEST 400
-#define HTTP_STATUS_UNAUTHORIZED 401
-#define HTTP_STATUS_FORBIDDEN 403
-#define HTTP_STATUS_NOT_FOUND 404
+#define HTTP_STATUS_BAD_REQUEST 400
+#define HTTP_STATUS_UNAUTHORIZED 401
+#define HTTP_STATUS_FORBIDDEN 403
+#define HTTP_STATUS_NOT_FOUND 404
+#define HTTP_STATUS_RANGE_NOT_SATISFIABLE 416
/* Server errors 5xx. */
-#define HTTP_STATUS_INTERNAL 500
-#define HTTP_STATUS_NOT_IMPLEMENTED 501
-#define HTTP_STATUS_BAD_GATEWAY 502
-#define HTTP_STATUS_UNAVAILABLE 503
+#define HTTP_STATUS_INTERNAL 500
+#define HTTP_STATUS_NOT_IMPLEMENTED 501
+#define HTTP_STATUS_BAD_GATEWAY 502
+#define HTTP_STATUS_UNAVAILABLE 503
+\f
+enum rp {
+ rel_none, rel_name, rel_value, rel_both
+};
+
+struct request {
+ const char *method;
+ char *arg;
+
+ struct request_header {
+ char *name, *value;
+ enum rp release_policy;
+ } *headers;
+ int hcount, hcapacity;
+};
+
+extern int numurls;
+
+/* Create a new, empty request. At least request_set_method must be
+ called before the request can be used. */
+
+static struct request *
+request_new (void)
+{
+ struct request *req = xnew0 (struct request);
+ req->hcapacity = 8;
+ req->headers = xnew_array (struct request_header, req->hcapacity);
+ return req;
+}
+
+/* Set the request's method and its arguments. METH should be a
+ literal string (or it should outlive the request) because it will
+ not be freed. ARG will be freed by request_free. */
+
+static void
+request_set_method (struct request *req, const char *meth, char *arg)
+{
+ req->method = meth;
+ req->arg = arg;
+}
+
+/* Return the method string passed with the last call to
+ request_set_method. */
+
+static const char *
+request_method (const struct request *req)
+{
+ return req->method;
+}
+
+/* Free one header according to the release policy specified with
+ request_set_header. */
+
+static void
+release_header (struct request_header *hdr)
+{
+ switch (hdr->release_policy)
+ {
+ case rel_none:
+ break;
+ case rel_name:
+ xfree (hdr->name);
+ break;
+ case rel_value:
+ xfree (hdr->value);
+ break;
+ case rel_both:
+ xfree (hdr->name);
+ xfree (hdr->value);
+ break;
+ }
+}
+
+/* Set the request named NAME to VALUE. Specifically, this means that
+ a "NAME: VALUE\r\n" header line will be used in the request. If a
+ header with the same name previously existed in the request, its
+ value will be replaced by this one. A NULL value means do nothing.
+
+ RELEASE_POLICY determines whether NAME and VALUE should be released
+ (freed) with request_free. Allowed values are:
+
+ - rel_none - don't free NAME or VALUE
+ - rel_name - free NAME when done
+ - rel_value - free VALUE when done
+ - rel_both - free both NAME and VALUE when done
+
+ Setting release policy is useful when arguments come from different
+ sources. For example:
+
+ // Don't free literal strings!
+ request_set_header (req, "Pragma", "no-cache", rel_none);
+
+ // Don't free a global variable, we'll need it later.
+ request_set_header (req, "Referer", opt.referer, rel_none);
+
+ // Value freshly allocated, free it when done.
+ request_set_header (req, "Range",
+ aprintf ("bytes=%s-", number_to_static_string (hs->restval)),
+ rel_value);
+ */
+
+static void
+request_set_header (struct request *req, char *name, char *value,
+ enum rp release_policy)
+{
+ struct request_header *hdr;
+ int i;
+
+ if (!value)
+ {
+ /* A NULL value is a no-op; if freeing the name is requested,
+ free it now to avoid leaks. */
+ if (release_policy == rel_name || release_policy == rel_both)
+ xfree (name);
+ return;
+ }
+
+ for (i = 0; i < req->hcount; i++)
+ {
+ hdr = &req->headers[i];
+ if (0 == strcasecmp (name, hdr->name))
+ {
+ /* Replace existing header. */
+ release_header (hdr);
+ hdr->name = name;
+ hdr->value = value;
+ hdr->release_policy = release_policy;
+ return;
+ }
+ }
+
+ /* Install new header. */
+
+ if (req->hcount >= req->hcapacity)
+ {
+ req->hcapacity <<= 1;
+ req->headers = xrealloc (req->headers, req->hcapacity * sizeof (*hdr));
+ }
+ hdr = &req->headers[req->hcount++];
+ hdr->name = name;
+ hdr->value = value;
+ hdr->release_policy = release_policy;
+}
+
+/* Like request_set_header, but sets the whole header line, as
+ provided by the user using the `--header' option. For example,
+ request_set_user_header (req, "Foo: bar") works just like
+ request_set_header (req, "Foo", "bar"). */
+
+static void
+request_set_user_header (struct request *req, const char *header)
+{
+ char *name;
+ const char *p = strchr (header, ':');
+ if (!p)
+ return;
+ BOUNDED_TO_ALLOCA (header, p, name);
+ ++p;
+ while (c_isspace (*p))
+ ++p;
+ request_set_header (req, xstrdup (name), (char *) p, rel_name);
+}
+
+/* Remove the header with specified name from REQ. Returns true if
+ the header was actually removed, false otherwise. */
+
+static bool
+request_remove_header (struct request *req, char *name)
+{
+ int i;
+ for (i = 0; i < req->hcount; i++)
+ {
+ struct request_header *hdr = &req->headers[i];
+ if (0 == strcasecmp (name, hdr->name))
+ {
+ release_header (hdr);
+ /* Move the remaining headers by one. */
+ if (i < req->hcount - 1)
+ memmove (hdr, hdr + 1, (req->hcount - i - 1) * sizeof (*hdr));
+ --req->hcount;
+ return true;
+ }
+ }
+ return false;
+}
+
+#define APPEND(p, str) do { \
+ int A_len = strlen (str); \
+ memcpy (p, str, A_len); \
+ p += A_len; \
+} while (0)
+
+/* Construct the request and write it to FD using fd_write. */
+
+static int
+request_send (const struct request *req, int fd)
+{
+ char *request_string, *p;
+ int i, size, write_error;
+
+ /* Count the request size. */
+ size = 0;
+
+ /* METHOD " " ARG " " "HTTP/1.0" "\r\n" */
+ size += strlen (req->method) + 1 + strlen (req->arg) + 1 + 8 + 2;
+
+ for (i = 0; i < req->hcount; i++)
+ {
+ struct request_header *hdr = &req->headers[i];
+ /* NAME ": " VALUE "\r\n" */
+ size += strlen (hdr->name) + 2 + strlen (hdr->value) + 2;
+ }
+
+ /* "\r\n\0" */
+ size += 3;
+
+ p = request_string = alloca_array (char, size);
+
+ /* Generate the request. */
+
+ APPEND (p, req->method); *p++ = ' ';
+ APPEND (p, req->arg); *p++ = ' ';
+ memcpy (p, "HTTP/1.0\r\n", 10); p += 10;
+
+ for (i = 0; i < req->hcount; i++)
+ {
+ struct request_header *hdr = &req->headers[i];
+ APPEND (p, hdr->name);
+ *p++ = ':', *p++ = ' ';
+ APPEND (p, hdr->value);
+ *p++ = '\r', *p++ = '\n';
+ }
+
+ *p++ = '\r', *p++ = '\n', *p++ = '\0';
+ assert (p - request_string == size);
+
+#undef APPEND
+
+ DEBUGP (("\n---request begin---\n%s---request end---\n", request_string));
+
+ /* Send the request to the server. */
+
+ write_error = fd_write (fd, request_string, size - 1, -1);
+ if (write_error < 0)
+ logprintf (LOG_VERBOSE, _("Failed writing HTTP request: %s.\n"),
+ fd_errstr (fd));
+ return write_error;
+}
+
+/* Release the resources used by REQ. */
+
+static void
+request_free (struct request *req)
+{
+ int i;
+ xfree_null (req->arg);
+ for (i = 0; i < req->hcount; i++)
+ release_header (&req->headers[i]);
+ xfree_null (req->headers);
+ xfree (req);
+}
+
+static struct hash_table *basic_authed_hosts;
+
+/* Find out if this host has issued a Basic challenge yet; if so, give
+ * it the username, password. A temporary measure until we can get
+ * proper authentication in place. */
+
+static bool
+maybe_send_basic_creds (const char *hostname, const char *user,
+ const char *passwd, struct request *req)
+{
+ bool do_challenge = false;
+ if (opt.auth_without_challenge)
+ {
+ DEBUGP(("Auth-without-challenge set, sending Basic credentials.\n"));
+ do_challenge = true;
+ }
+ else if (basic_authed_hosts
+ && hash_table_contains(basic_authed_hosts, hostname))
+ {
+ DEBUGP(("Found %s in basic_authed_hosts.\n", quote (hostname)));
+ do_challenge = true;
+ }
+ else
+ {
+ DEBUGP(("Host %s has not issued a general basic challenge.\n",
+ quote (hostname)));
+ }
+ if (do_challenge)
+ {
+ request_set_header (req, "Authorization",
+ basic_authentication_encode (user, passwd),
+ rel_value);
+ }
+ return do_challenge;
+}
+
+static void
+register_basic_auth_host (const char *hostname)
+{
+ if (!basic_authed_hosts)
+ {
+ basic_authed_hosts = make_nocase_string_hash_table (1);
+ }
+ if (!hash_table_contains(basic_authed_hosts, hostname))
+ {
+ hash_table_put (basic_authed_hosts, xstrdup(hostname), NULL);
+ DEBUGP(("Inserted %s into basic_authed_hosts\n", quote (hostname)));
+ }
+}
+
+
+/* Send the contents of FILE_NAME to SOCK. Make sure that exactly
+ PROMISED_SIZE bytes are sent over the wire -- if the file is
+ longer, read only that much; if the file is shorter, report an error. */
+
+static int
+post_file (int sock, const char *file_name, wgint promised_size)
+{
+ static char chunk[8192];
+ wgint written = 0;
+ int write_error;
+ FILE *fp;
+
+ DEBUGP (("[writing POST file %s ... ", file_name));
+
+ fp = fopen (file_name, "rb");
+ if (!fp)
+ return -1;
+ while (!feof (fp) && written < promised_size)
+ {
+ int towrite;
+ int length = fread (chunk, 1, sizeof (chunk), fp);
+ if (length == 0)
+ break;
+ towrite = MIN (promised_size - written, length);
+ write_error = fd_write (sock, chunk, towrite, -1);
+ if (write_error < 0)
+ {
+ fclose (fp);
+ return -1;
+ }
+ written += towrite;
+ }
+ fclose (fp);
+
+ /* If we've written less than was promised, report a (probably
+ nonsensical) error rather than break the promise. */
+ if (written < promised_size)
+ {
+ errno = EINVAL;
+ return -1;
+ }
+
+ assert (written == promised_size);
+ DEBUGP (("done]\n"));
+ return 0;
+}
\f
+/* Determine whether [START, PEEKED + PEEKLEN) contains an empty line.
+ If so, return the pointer to the position after the line, otherwise
+ return NULL. This is used as callback to fd_read_hunk. The data
+ between START and PEEKED has been read and cannot be "unread"; the
+ data after PEEKED has only been peeked. */
+
+static const char *
+response_head_terminator (const char *start, const char *peeked, int peeklen)
+{
+ const char *p, *end;
+
+ /* If at first peek, verify whether HUNK starts with "HTTP". If
+ not, this is a HTTP/0.9 request and we must bail out without
+ reading anything. */
+ if (start == peeked && 0 != memcmp (start, "HTTP", MIN (peeklen, 4)))
+ return start;
+
+ /* Look for "\n[\r]\n", and return the following position if found.
+ Start two chars before the current to cover the possibility that
+ part of the terminator (e.g. "\n\r") arrived in the previous
+ batch. */
+ p = peeked - start < 2 ? start : peeked - 2;
+ end = peeked + peeklen;
+
+ /* Check for \n\r\n or \n\n anywhere in [p, end-2). */
+ for (; p < end - 2; p++)
+ if (*p == '\n')
+ {
+ if (p[1] == '\r' && p[2] == '\n')
+ return p + 3;
+ else if (p[1] == '\n')
+ return p + 2;
+ }
+ /* p==end-2: check for \n\n directly preceding END. */
+ if (p[0] == '\n' && p[1] == '\n')
+ return p + 2;
+
+ return NULL;
+}
+
+/* The maximum size of a single HTTP response we care to read. Rather
+ than being a limit of the reader implementation, this limit
+ prevents Wget from slurping all available memory upon encountering
+ malicious or buggy server output, thus protecting the user. Define
+ it to 0 to remove the limit. */
+
+#define HTTP_RESPONSE_MAX_SIZE 65536
+
+/* Read the HTTP request head from FD and return it. The error
+ conditions are the same as with fd_read_hunk.
+
+ To support HTTP/0.9 responses, this function tries to make sure
+ that the data begins with "HTTP". If this is not the case, no data
+ is read and an empty request is returned, so that the remaining
+ data can be treated as body. */
+
+static char *
+read_http_response_head (int fd)
+{
+ return fd_read_hunk (fd, response_head_terminator, 512,
+ HTTP_RESPONSE_MAX_SIZE);
+}
+
+struct response {
+ /* The response data. */
+ const char *data;
+
+ /* The array of pointers that indicate where each header starts.
+ For example, given this HTTP response:
+
+ HTTP/1.0 200 Ok
+ Description: some
+ text
+ Etag: x
+
+ The headers are located like this:
+
+ "HTTP/1.0 200 Ok\r\nDescription: some\r\n text\r\nEtag: x\r\n\r\n"
+ ^ ^ ^ ^
+ headers[0] headers[1] headers[2] headers[3]
+
+ I.e. headers[0] points to the beginning of the request,
+ headers[1] points to the end of the first header and the
+ beginning of the second one, etc. */
+
+ const char **headers;
+};
+
+/* Create a new response object from the text of the HTTP response,
+ available in HEAD. That text is automatically split into
+ constituent header lines for fast retrieval using
+ resp_header_*. */
+
+static struct response *
+resp_new (const char *head)
+{
+ const char *hdr;
+ int count, size;
+
+ struct response *resp = xnew0 (struct response);
+ resp->data = head;
+
+ if (*head == '\0')
+ {
+ /* Empty head means that we're dealing with a headerless
+ (HTTP/0.9) response. In that case, don't set HEADERS at
+ all. */
+ return resp;
+ }
+
+ /* Split HEAD into header lines, so that resp_header_* functions
+ don't need to do this over and over again. */
+
+ size = count = 0;
+ hdr = head;
+ while (1)
+ {
+ DO_REALLOC (resp->headers, size, count + 1, const char *);
+ resp->headers[count++] = hdr;
+
+ /* Break upon encountering an empty line. */
+ if (!hdr[0] || (hdr[0] == '\r' && hdr[1] == '\n') || hdr[0] == '\n')
+ break;
+
+ /* Find the end of HDR, including continuations. */
+ do
+ {
+ const char *end = strchr (hdr, '\n');
+ if (end)
+ hdr = end + 1;
+ else
+ hdr += strlen (hdr);
+ }
+ while (*hdr == ' ' || *hdr == '\t');
+ }
+ DO_REALLOC (resp->headers, size, count + 1, const char *);
+ resp->headers[count] = NULL;
+
+ return resp;
+}
+
+/* Locate the header named NAME in the request data, starting with
+ position START. This allows the code to loop through the request
+ data, filtering for all requests of a given name. Returns the
+ found position, or -1 for failure. The code that uses this
+ function typically looks like this:
+
+ for (pos = 0; (pos = resp_header_locate (...)) != -1; pos++)
+ ... do something with header ...
+
+ If you only care about one header, use resp_header_get instead of
+ this function. */
+
+static int
+resp_header_locate (const struct response *resp, const char *name, int start,
+ const char **begptr, const char **endptr)
+{
+ int i;
+ const char **headers = resp->headers;
+ int name_len;
+
+ if (!headers || !headers[1])
+ return -1;
+
+ name_len = strlen (name);
+ if (start > 0)
+ i = start;
+ else
+ i = 1;
+
+ for (; headers[i + 1]; i++)
+ {
+ const char *b = headers[i];
+ const char *e = headers[i + 1];
+ if (e - b > name_len
+ && b[name_len] == ':'
+ && 0 == strncasecmp (b, name, name_len))
+ {
+ b += name_len + 1;
+ while (b < e && c_isspace (*b))
+ ++b;
+ while (b < e && c_isspace (e[-1]))
+ --e;
+ *begptr = b;
+ *endptr = e;
+ return i;
+ }
+ }
+ return -1;
+}
+
+/* Find and retrieve the header named NAME in the request data. If
+ found, set *BEGPTR to its starting, and *ENDPTR to its ending
+ position, and return true. Otherwise return false.
+
+ This function is used as a building block for resp_header_copy
+ and resp_header_strdup. */
+
+static bool
+resp_header_get (const struct response *resp, const char *name,
+ const char **begptr, const char **endptr)
+{
+ int pos = resp_header_locate (resp, name, 0, begptr, endptr);
+ return pos != -1;
+}
+
+/* Copy the response header named NAME to buffer BUF, no longer than
+ BUFSIZE (BUFSIZE includes the terminating 0). If the header
+ exists, true is returned, false otherwise. If there should be no
+ limit on the size of the header, use resp_header_strdup instead.
+
+ If BUFSIZE is 0, no data is copied, but the boolean indication of
+ whether the header is present is still returned. */
+
+static bool
+resp_header_copy (const struct response *resp, const char *name,
+ char *buf, int bufsize)
+{
+ const char *b, *e;
+ if (!resp_header_get (resp, name, &b, &e))
+ return false;
+ if (bufsize)
+ {
+ int len = MIN (e - b, bufsize - 1);
+ memcpy (buf, b, len);
+ buf[len] = '\0';
+ }
+ return true;
+}
+
+/* Return the value of header named NAME in RESP, allocated with
+ malloc. If such a header does not exist in RESP, return NULL. */
+
+static char *
+resp_header_strdup (const struct response *resp, const char *name)
+{
+ const char *b, *e;
+ if (!resp_header_get (resp, name, &b, &e))
+ return NULL;
+ return strdupdelim (b, e);
+}
+
/* Parse the HTTP status line, which is of format:
HTTP-Version SP Status-Code SP Reason-Phrase
- The function returns the status-code, or -1 if the status line is
- malformed. The pointer to reason-phrase is returned in RP. */
+ The function returns the status-code, or -1 if the status line
+ appears malformed. The pointer to "reason-phrase" message is
+ returned in *MESSAGE. */
+
static int
-parse_http_status_line (const char *line, const char **reason_phrase_ptr)
+resp_status (const struct response *resp, char **message)
{
- /* (the variables must not be named `major' and `minor', because
- that breaks compilation with SunOS4 cc.) */
- int mjr, mnr, statcode;
- const char *p;
+ int status;
+ const char *p, *end;
+
+ if (!resp->headers)
+ {
+ /* For a HTTP/0.9 response, assume status 200. */
+ if (message)
+ *message = xstrdup (_("No headers, assuming HTTP/0.9"));
+ return 200;
+ }
- *reason_phrase_ptr = NULL;
+ p = resp->headers[0];
+ end = resp->headers[1];
- /* The standard format of HTTP-Version is: `HTTP/X.Y', where X is
- major version, and Y is minor version. */
- if (strncmp (line, "HTTP/", 5) != 0)
+ if (!end)
return -1;
- line += 5;
- /* Calculate major HTTP version. */
- p = line;
- for (mjr = 0; ISDIGIT (*line); line++)
- mjr = 10 * mjr + (*line - '0');
- if (*line != '.' || p == line)
+ /* "HTTP" */
+ if (end - p < 4 || 0 != strncmp (p, "HTTP", 4))
return -1;
- ++line;
+ p += 4;
- /* Calculate minor HTTP version. */
- p = line;
- for (mnr = 0; ISDIGIT (*line); line++)
- mnr = 10 * mnr + (*line - '0');
- if (*line != ' ' || p == line)
- return -1;
- /* Wget will accept only 1.0 and higher HTTP-versions. The value of
- minor version can be safely ignored. */
- if (mjr < 1)
- return -1;
- ++line;
+ /* Match the HTTP version. This is optional because Gnutella
+ servers have been reported to not specify HTTP version. */
+ if (p < end && *p == '/')
+ {
+ ++p;
+ while (p < end && c_isdigit (*p))
+ ++p;
+ if (p < end && *p == '.')
+ ++p;
+ while (p < end && c_isdigit (*p))
+ ++p;
+ }
- /* Calculate status code. */
- if (!(ISDIGIT (*line) && ISDIGIT (line[1]) && ISDIGIT (line[2])))
+ while (p < end && c_isspace (*p))
+ ++p;
+ if (end - p < 3 || !c_isdigit (p[0]) || !c_isdigit (p[1]) || !c_isdigit (p[2]))
return -1;
- statcode = 100 * (*line - '0') + 10 * (line[1] - '0') + (line[2] - '0');
- /* Set up the reason phrase pointer. */
- line += 3;
- /* RFC2068 requires SPC here, but we allow the string to finish
- here, in case no reason-phrase is present. */
- if (*line != ' ')
+ status = 100 * (p[0] - '0') + 10 * (p[1] - '0') + (p[2] - '0');
+ p += 3;
+
+ if (message)
{
- if (!*line)
- *reason_phrase_ptr = line;
- else
- return -1;
+ while (p < end && c_isspace (*p))
+ ++p;
+ while (p < end && c_isspace (end[-1]))
+ --end;
+ *message = strdupdelim (p, end);
}
- else
- *reason_phrase_ptr = line + 1;
- return statcode;
+ return status;
}
-\f
-/* Functions to be used as arguments to header_process(): */
-struct http_process_range_closure {
- long first_byte_pos;
- long last_byte_pos;
- long entity_length;
-};
+/* Release the resources used by RESP. */
+
+static void
+resp_free (struct response *resp)
+{
+ xfree_null (resp->headers);
+ xfree (resp);
+}
+
+/* Print a single line of response, the characters [b, e). We tried
+ getting away with
+ logprintf (LOG_VERBOSE, "%s%.*s\n", prefix, (int) (e - b), b);
+ but that failed to escape the non-printable characters and, in fact,
+ caused crashes in UTF-8 locales. */
+
+static void
+print_response_line(const char *prefix, const char *b, const char *e)
+{
+ char *copy;
+ BOUNDED_TO_ALLOCA(b, e, copy);
+ logprintf (LOG_ALWAYS, "%s%s\n", prefix,
+ quotearg_style (escape_quoting_style, copy));
+}
+
+/* Print the server response, line by line, omitting the trailing CRLF
+ from individual header lines, and prefixed with PREFIX. */
+
+static void
+print_server_response (const struct response *resp, const char *prefix)
+{
+ int i;
+ if (!resp->headers)
+ return;
+ for (i = 0; resp->headers[i + 1]; i++)
+ {
+ const char *b = resp->headers[i];
+ const char *e = resp->headers[i + 1];
+ /* Skip CRLF */
+ if (b < e && e[-1] == '\n')
+ --e;
+ if (b < e && e[-1] == '\r')
+ --e;
+ print_response_line(prefix, b, e);
+ }
+}
/* Parse the `Content-Range' header and extract the information it
- contains. Returns 1 if successful, -1 otherwise. */
-static int
-http_process_range (const char *hdr, void *arg)
+ contains. Returns true if successful, false otherwise. */
+static bool
+parse_content_range (const char *hdr, wgint *first_byte_ptr,
+ wgint *last_byte_ptr, wgint *entity_length_ptr)
{
- struct http_process_range_closure *closure
- = (struct http_process_range_closure *)arg;
- long num;
+ wgint num;
- /* Certain versions of Nutscape proxy server send out
- `Content-Length' without "bytes" specifier, which is a breach of
- RFC2068 (as well as the HTTP/1.1 draft which was current at the
- time). But hell, I must support it... */
- if (!strncasecmp (hdr, "bytes", 5))
+ /* Ancient versions of Netscape proxy server, presumably predating
+ rfc2068, sent out `Content-Range' without the "bytes"
+ specifier. */
+ if (0 == strncasecmp (hdr, "bytes", 5))
{
hdr += 5;
- hdr += skip_lws (hdr);
+ /* "JavaWebServer/1.1.1" sends "bytes: x-y/z", contrary to the
+ HTTP spec. */
+ if (*hdr == ':')
+ ++hdr;
+ while (c_isspace (*hdr))
+ ++hdr;
if (!*hdr)
- return 0;
+ return false;
}
- if (!ISDIGIT (*hdr))
- return 0;
- for (num = 0; ISDIGIT (*hdr); hdr++)
+ if (!c_isdigit (*hdr))
+ return false;
+ for (num = 0; c_isdigit (*hdr); hdr++)
num = 10 * num + (*hdr - '0');
- if (*hdr != '-' || !ISDIGIT (*(hdr + 1)))
- return 0;
- closure->first_byte_pos = num;
+ if (*hdr != '-' || !c_isdigit (*(hdr + 1)))
+ return false;
+ *first_byte_ptr = num;
++hdr;
- for (num = 0; ISDIGIT (*hdr); hdr++)
+ for (num = 0; c_isdigit (*hdr); hdr++)
num = 10 * num + (*hdr - '0');
- if (*hdr != '/' || !ISDIGIT (*(hdr + 1)))
- return 0;
- closure->last_byte_pos = num;
+ if (*hdr != '/' || !c_isdigit (*(hdr + 1)))
+ return false;
+ *last_byte_ptr = num;
++hdr;
- for (num = 0; ISDIGIT (*hdr); hdr++)
- num = 10 * num + (*hdr - '0');
- closure->entity_length = num;
- return 1;
+ if (*hdr == '*')
+ num = -1;
+ else
+ for (num = 0; c_isdigit (*hdr); hdr++)
+ num = 10 * num + (*hdr - '0');
+ *entity_length_ptr = num;
+ return true;
}
-/* Place 1 to ARG if the HDR contains the word "none", 0 otherwise.
- Used for `Accept-Ranges'. */
-static int
-http_process_none (const char *hdr, void *arg)
+/* Read the body of the request, but don't store it anywhere and don't
+ display a progress gauge. This is useful for reading the bodies of
+ administrative responses to which we will soon issue another
+ request. The response is not useful to the user, but reading it
+ allows us to continue using the same connection to the server.
+
+ If reading fails, false is returned, true otherwise. In debug
+ mode, the body is displayed for debugging purposes. */
+
+static bool
+skip_short_body (int fd, wgint contlen)
{
- int *where = (int *)arg;
+ enum {
+ SKIP_SIZE = 512, /* size of the download buffer */
+ SKIP_THRESHOLD = 4096 /* the largest size we read */
+ };
+ char dlbuf[SKIP_SIZE + 1];
+ dlbuf[SKIP_SIZE] = '\0'; /* so DEBUGP can safely print it */
- if (strstr (hdr, "none"))
- *where = 1;
- else
- *where = 0;
- return 1;
+ /* We shouldn't get here with unknown contlen. (This will change
+ with HTTP/1.1, which supports "chunked" transfer.) */
+ assert (contlen != -1);
+
+ /* If the body is too large, it makes more sense to simply close the
+ connection than to try to read the body. */
+ if (contlen > SKIP_THRESHOLD)
+ return false;
+
+ DEBUGP (("Skipping %s bytes of body: [", number_to_static_string (contlen)));
+
+ while (contlen > 0)
+ {
+ int ret = fd_read (fd, dlbuf, MIN (contlen, SKIP_SIZE), -1);
+ if (ret <= 0)
+ {
+ /* Don't normally report the error since this is an
+ optimization that should be invisible to the user. */
+ DEBUGP (("] aborting (%s).\n",
+ ret < 0 ? fd_errstr (fd) : "EOF received"));
+ return false;
+ }
+ contlen -= ret;
+ /* Safe even if %.*s bogusly expects terminating \0 because
+ we've zero-terminated dlbuf above. */
+ DEBUGP (("%.*s", ret, dlbuf));
+ }
+
+ DEBUGP (("] done.\n"));
+ return true;
}
-/* Place the malloc-ed copy of HDR hdr, to the first `;' to ARG. */
-static int
-http_process_type (const char *hdr, void *arg)
+/* Extract a parameter from the string (typically an HTTP header) at
+ **SOURCE and advance SOURCE to the next parameter. Return false
+ when there are no more parameters to extract. The name of the
+ parameter is returned in NAME, and the value in VALUE. If the
+ parameter has no value, the token's value is zeroed out.
+
+ For example, if *SOURCE points to the string "attachment;
+ filename=\"foo bar\"", the first call to this function will return
+ the token named "attachment" and no value, and the second call will
+ return the token named "filename" and value "foo bar". The third
+ call will return false, indicating no more valid tokens. */
+
+bool
+extract_param (const char **source, param_token *name, param_token *value,
+ char separator)
{
- char **result = (char **)arg;
- /* Locate P on `;' or the terminating zero, whichever comes first. */
- const char *p = strchr (hdr, ';');
- if (!p)
- p = hdr + strlen (hdr);
- while (p > hdr && ISSPACE (*(p - 1)))
- --p;
- *result = strdupdelim (hdr, p);
- return 1;
+ const char *p = *source;
+
+ while (c_isspace (*p)) ++p;
+ if (!*p)
+ {
+ *source = p;
+ return false; /* no error; nothing more to extract */
+ }
+
+ /* Extract name. */
+ name->b = p;
+ while (*p && !c_isspace (*p) && *p != '=' && *p != separator) ++p;
+ name->e = p;
+ if (name->b == name->e)
+ return false; /* empty name: error */
+ while (c_isspace (*p)) ++p;
+ if (*p == separator || !*p) /* no value */
+ {
+ xzero (*value);
+ if (*p == separator) ++p;
+ *source = p;
+ return true;
+ }
+ if (*p != '=')
+ return false; /* error */
+
+ /* *p is '=', extract value */
+ ++p;
+ while (c_isspace (*p)) ++p;
+ if (*p == '"') /* quoted */
+ {
+ value->b = ++p;
+ while (*p && *p != '"') ++p;
+ if (!*p)
+ return false;
+ value->e = p++;
+ /* Currently at closing quote; find the end of param. */
+ while (c_isspace (*p)) ++p;
+ while (*p && *p != separator) ++p;
+ if (*p == separator)
+ ++p;
+ else if (*p)
+ /* garbage after closed quote, e.g. foo="bar"baz */
+ return false;
+ }
+ else /* unquoted */
+ {
+ value->b = p;
+ while (*p && *p != separator) ++p;
+ value->e = p;
+ while (value->e != value->b && c_isspace (value->e[-1]))
+ --value->e;
+ if (*p == separator) ++p;
+ }
+ *source = p;
+ return true;
}
-/* Check whether the `Connection' header is set to "keep-alive". */
-static int
-http_process_connection (const char *hdr, void *arg)
+#undef MAX
+#define MAX(p, q) ((p) > (q) ? (p) : (q))
+
+/* Parse the contents of the `Content-Disposition' header, extracting
+ the information useful to Wget. Content-Disposition is a header
+ borrowed from MIME; when used in HTTP, it typically serves for
+ specifying the desired file name of the resource. For example:
+
+ Content-Disposition: attachment; filename="flora.jpg"
+
+ Wget will skip the tokens it doesn't care about, such as
+ "attachment" in the previous example; it will also skip other
+ unrecognized params. If the header is syntactically correct and
+ contains a file name, a copy of the file name is stored in
+ *filename and true is returned. Otherwise, the function returns
+ false.
+
+ The file name is stripped of directory components and must not be
+ empty. */
+
+static bool
+parse_content_disposition (const char *hdr, char **filename)
{
- int *flag = (int *)arg;
- if (!strcasecmp (hdr, "Keep-Alive"))
- *flag = 1;
- return 1;
+ param_token name, value;
+ while (extract_param (&hdr, &name, &value, ';'))
+ if (BOUNDED_EQUAL_NO_CASE (name.b, name.e, "filename") && value.b != NULL)
+ {
+ /* Make the file name begin at the last slash or backslash. */
+ const char *last_slash = memrchr (value.b, '/', value.e - value.b);
+ const char *last_bs = memrchr (value.b, '\\', value.e - value.b);
+ if (last_slash && last_bs)
+ value.b = 1 + MAX (last_slash, last_bs);
+ else if (last_slash || last_bs)
+ value.b = 1 + (last_slash ? last_slash : last_bs);
+ if (value.b == value.e)
+ continue;
+ /* Start with the directory prefix, if specified. */
+ if (opt.dir_prefix)
+ {
+ int prefix_length = strlen (opt.dir_prefix);
+ bool add_slash = (opt.dir_prefix[prefix_length - 1] != '/');
+ int total_length;
+
+ if (add_slash)
+ ++prefix_length;
+ total_length = prefix_length + (value.e - value.b);
+ *filename = xmalloc (total_length + 1);
+ strcpy (*filename, opt.dir_prefix);
+ if (add_slash)
+ (*filename)[prefix_length - 1] = '/';
+ memcpy (*filename + prefix_length, value.b, (value.e - value.b));
+ (*filename)[total_length] = '\0';
+ }
+ else
+ *filename = strdupdelim (value.b, value.e);
+ return true;
+ }
+ return false;
}
\f
/* Persistent connections. Currently, we cache the most recently used
connection as persistent, provided that the HTTP server agrees to
make it such. The persistence data is stored in the variables
- below. Ideally, it would be in a structure, and it should be
- possible to cache an arbitrary fixed number of these connections.
-
- I think the code is quite easy to extend in that direction. */
+ below. Ideally, it should be possible to cache an arbitrary fixed
+ number of these connections. */
/* Whether a persistent connection is active. */
-static int pc_active_p;
-/* Host and port of currently active persistent connection. */
-static unsigned char pc_last_host[4];
-static unsigned short pc_last_port;
+static bool pconn_active;
-/* File descriptor of the currently active persistent connection. */
-static int pc_last_fd;
+static struct {
+ /* The socket of the connection. */
+ int socket;
-#ifdef HAVE_SSL
-/* Whether a ssl handshake has occoured on this connection */
-static int pc_active_ssl;
-/* SSL connection of the currently active persistent connection. */
-static SSL *pc_last_ssl;
-#endif /* HAVE_SSL */
+ /* Host and port of the currently active persistent connection. */
+ char *host;
+ int port;
+
+ /* Whether a ssl handshake has occoured on this connection. */
+ bool ssl;
+
+ /* Whether the connection was authorized. This is only done by
+ NTLM, which authorizes *connections* rather than individual
+ requests. (That practice is peculiar for HTTP, but it is a
+ useful optimization.) */
+ bool authorized;
+
+#ifdef ENABLE_NTLM
+ /* NTLM data of the current connection. */
+ struct ntlmdata ntlm;
+#endif
+} pconn;
-/* Mark the persistent connection as invalid. This is used by the
- CLOSE_* macros after they forcefully close a registered persistent
- connection. This does not close the file descriptor -- it is left
- to the caller to do that. (Maybe it should, though.) */
+/* Mark the persistent connection as invalid and free the resources it
+ uses. This is used by the CLOSE_* macros after they forcefully
+ close a registered persistent connection. */
static void
invalidate_persistent (void)
{
- pc_active_p = 0;
-#ifdef HAVE_SSL
- pc_active_ssl = 0;
-#endif /* HAVE_SSL */
- DEBUGP (("Invalidating fd %d from further reuse.\n", pc_last_fd));
+ DEBUGP (("Disabling further reuse of socket %d.\n", pconn.socket));
+ pconn_active = false;
+ fd_close (pconn.socket);
+ xfree (pconn.host);
+ xzero (pconn);
}
/* Register FD, which should be a TCP/IP connection to HOST:PORT, as
If a previous connection was persistent, it is closed. */
static void
-register_persistent (const char *host, unsigned short port, int fd
-#ifdef HAVE_SSL
- , SSL *ssl
-#endif
- )
+register_persistent (const char *host, int port, int fd, bool ssl)
{
- int success;
-
- if (pc_active_p)
+ if (pconn_active)
{
- if (pc_last_fd == fd)
- {
- /* The connection FD is already registered. Nothing to
- do. */
- return;
- }
+ if (pconn.socket == fd)
+ {
+ /* The connection FD is already registered. */
+ return;
+ }
else
- {
- /* The old persistent connection is still active; let's
- close it first. This situation arises whenever a
- persistent connection exists, but we then connect to a
- different host, and try to register a persistent
- connection to that one. */
-#ifdef HAVE_SSL
- /* The ssl disconnect has to take place before the closing
- of pc_last_fd. */
- if (pc_last_ssl)
- shutdown_ssl(pc_last_ssl);
-#endif
- CLOSE (pc_last_fd);
- invalidate_persistent ();
- }
- }
-
- /* This store_hostaddress may not fail, because it has the results
- in the cache. */
- success = store_hostaddress (pc_last_host, host);
- assert (success);
- pc_last_port = port;
- pc_last_fd = fd;
- pc_active_p = 1;
-#ifdef HAVE_SSL
- pc_last_ssl = ssl;
- pc_active_ssl = ssl ? 1 : 0;
-#endif
- DEBUGP (("Registered fd %d for persistent reuse.\n", fd));
+ {
+ /* The old persistent connection is still active; close it
+ first. This situation arises whenever a persistent
+ connection exists, but we then connect to a different
+ host, and try to register a persistent connection to that
+ one. */
+ invalidate_persistent ();
+ }
+ }
+
+ pconn_active = true;
+ pconn.socket = fd;
+ pconn.host = xstrdup (host);
+ pconn.port = port;
+ pconn.ssl = ssl;
+ pconn.authorized = false;
+
+ DEBUGP (("Registered socket %d for persistent reuse.\n", fd));
}
-/* Return non-zero if a persistent connection is available for
- connecting to HOST:PORT. */
+/* Return true if a persistent connection is available for connecting
+ to HOST:PORT. */
-static int
-persistent_available_p (const char *host, unsigned short port
-#ifdef HAVE_SSL
- , int ssl
-#endif
- )
+static bool
+persistent_available_p (const char *host, int port, bool ssl,
+ bool *host_lookup_failed)
{
- unsigned char this_host[4];
/* First, check whether a persistent connection is active at all. */
- if (!pc_active_p)
- return 0;
- /* Second, check if the active connection pertains to the correct
- (HOST, PORT) ordered pair. */
- if (port != pc_last_port)
- return 0;
-#ifdef HAVE_SSL
- /* Second, a): check if current connection is (not) ssl, too. This
- test is unlikely to fail because HTTP and HTTPS typicaly use
- different ports. Yet it is possible, or so I [Christian
- Fraenkel] have been told, to run HTTPS and HTTP simultaneus on
- the same port. */
- if (ssl != pc_active_ssl)
- return 0;
-#endif /* HAVE_SSL */
- if (!store_hostaddress (this_host, host))
- return 0;
- if (memcmp (pc_last_host, this_host, 4))
- return 0;
- /* Third: check whether the connection is still open. This is
- important because most server implement a liberal (short) timeout
+ if (!pconn_active)
+ return false;
+
+ /* If we want SSL and the last connection wasn't or vice versa,
+ don't use it. Checking for host and port is not enough because
+ HTTP and HTTPS can apparently coexist on the same port. */
+ if (ssl != pconn.ssl)
+ return false;
+
+ /* If we're not connecting to the same port, we're not interested. */
+ if (port != pconn.port)
+ return false;
+
+ /* If the host is the same, we're in business. If not, there is
+ still hope -- read below. */
+ if (0 != strcasecmp (host, pconn.host))
+ {
+ /* Check if pconn.socket is talking to HOST under another name.
+ This happens often when both sites are virtual hosts
+ distinguished only by name and served by the same network
+ interface, and hence the same web server (possibly set up by
+ the ISP and serving many different web sites). This
+ admittedly unconventional optimization does not contradict
+ HTTP and works well with popular server software. */
+
+ bool found;
+ ip_address ip;
+ struct address_list *al;
+
+ if (ssl)
+ /* Don't try to talk to two different SSL sites over the same
+ secure connection! (Besides, it's not clear that
+ name-based virtual hosting is even possible with SSL.) */
+ return false;
+
+ /* If pconn.socket's peer is one of the IP addresses HOST
+ resolves to, pconn.socket is for all intents and purposes
+ already talking to HOST. */
+
+ if (!socket_ip_address (pconn.socket, &ip, ENDPOINT_PEER))
+ {
+ /* Can't get the peer's address -- something must be very
+ wrong with the connection. */
+ invalidate_persistent ();
+ return false;
+ }
+ al = lookup_host (host, 0);
+ if (!al)
+ {
+ *host_lookup_failed = true;
+ return false;
+ }
+
+ found = address_list_contains (al, &ip);
+ address_list_release (al);
+
+ if (!found)
+ return false;
+
+ /* The persistent connection's peer address was found among the
+ addresses HOST resolved to; therefore, pconn.sock is in fact
+ already talking to HOST -- no need to reconnect. */
+ }
+
+ /* Finally, check whether the connection is still open. This is
+ important because most servers implement liberal (short) timeout
on persistent connections. Wget can of course always reconnect
if the connection doesn't work out, but it's nicer to know in
advance. This test is a logical followup of the first test, but
- is "expensive" and therefore placed at the end of the list. */
- if (!test_socket_open (pc_last_fd))
+ is "expensive" and therefore placed at the end of the list.
+
+ (Current implementation of test_socket_open has a nice side
+ effect that it treats sockets with pending data as "closed".
+ This is exactly what we want: if a broken server sends message
+ body in response to HEAD, or if it sends more than conent-length
+ data, we won't reuse the corrupted connection.) */
+
+ if (!test_socket_open (pconn.socket))
{
/* Oops, the socket is no longer open. Now that we know that,
let's invalidate the persistent connection before returning
0. */
- CLOSE (pc_last_fd);
invalidate_persistent ();
- return 0;
+ return false;
}
- return 1;
-}
-#ifdef HAVE_SSL
-# define SHUTDOWN_SSL(ssl) do { \
- if (ssl) \
- shutdown_ssl (ssl); \
-} while (0)
-#else
-# define SHUTDOWN_SSL(ssl)
-#endif
+ return true;
+}
/* The idea behind these two CLOSE macros is to distinguish between
two cases: one when the job we've been doing is finished, and we
`pc_active_p && (fd) == pc_last_fd' is "we're *now* using an
active, registered connection". */
-#define CLOSE_FINISH(fd) do { \
- if (!keep_alive) \
- { \
- SHUTDOWN_SSL (ssl); \
- CLOSE (fd); \
- if (pc_active_p && (fd) == pc_last_fd) \
- invalidate_persistent (); \
- } \
+#define CLOSE_FINISH(fd) do { \
+ if (!keep_alive) \
+ { \
+ if (pconn_active && (fd) == pconn.socket) \
+ invalidate_persistent (); \
+ else \
+ { \
+ fd_close (fd); \
+ fd = -1; \
+ } \
+ } \
} while (0)
-#define CLOSE_INVALIDATE(fd) do { \
- SHUTDOWN_SSL (ssl); \
- CLOSE (fd); \
- if (pc_active_p && (fd) == pc_last_fd) \
- invalidate_persistent (); \
+#define CLOSE_INVALIDATE(fd) do { \
+ if (pconn_active && (fd) == pconn.socket) \
+ invalidate_persistent (); \
+ else \
+ fd_close (fd); \
+ fd = -1; \
} while (0)
\f
struct http_stat
{
- long len; /* received length */
- long contlen; /* expected length */
- long restval; /* the restart value */
- int res; /* the result of last read */
- char *newloc; /* new location (redirection) */
- char *remote_time; /* remote time-stamp string */
- char *error; /* textual HTTP error */
- int statcode; /* status code */
- long dltime; /* time of the download */
- int no_truncate; /* whether truncating the file is
- forbidden. */
+ wgint len; /* received length */
+ wgint contlen; /* expected length */
+ wgint restval; /* the restart value */
+ int res; /* the result of last read */
+ char *rderrmsg; /* error message from read error */
+ char *newloc; /* new location (redirection) */
+ char *remote_time; /* remote time-stamp string */
+ char *error; /* textual HTTP error */
+ int statcode; /* status code */
+ char *message; /* status message */
+ wgint rd_size; /* amount of data read from socket */
+ double dltime; /* time it took to download the data */
+ const char *referer; /* value of the referer header. */
+ char *local_file; /* local file name. */
+ bool existence_checked; /* true if we already checked for a file's
+ existence after having begun to download
+ (needed in gethttp for when connection is
+ interrupted/restarted. */
+ bool timestamp_checked; /* true if pre-download time-stamping checks
+ * have already been performed */
+ char *orig_file_name; /* name of file to compare for time-stamping
+ * (might be != local_file if -K is set) */
+ wgint orig_file_size; /* size of file to compare for time-stamping */
+ time_t orig_file_tstamp; /* time-stamp of file to compare for
+ * time-stamping */
};
-/* Free the elements of hstat X. */
-#define FREEHSTAT(x) do \
-{ \
- FREE_MAYBE ((x).newloc); \
- FREE_MAYBE ((x).remote_time); \
- FREE_MAYBE ((x).error); \
- (x).newloc = (x).remote_time = (x).error = NULL; \
-} while (0)
+static void
+free_hstat (struct http_stat *hs)
+{
+ xfree_null (hs->newloc);
+ xfree_null (hs->remote_time);
+ xfree_null (hs->error);
+ xfree_null (hs->rderrmsg);
+ xfree_null (hs->local_file);
+ xfree_null (hs->orig_file_name);
+ xfree_null (hs->message);
+
+ /* Guard against being called twice. */
+ hs->newloc = NULL;
+ hs->remote_time = NULL;
+ hs->error = NULL;
+}
-static char *create_authorization_line PARAMS ((const char *, const char *,
- const char *, const char *,
- const char *));
-static char *basic_authentication_encode PARAMS ((const char *, const char *,
- const char *));
-static int known_authentication_scheme_p PARAMS ((const char *));
+#define BEGINS_WITH(line, string_constant) \
+ (!strncasecmp (line, string_constant, sizeof (string_constant) - 1) \
+ && (c_isspace (line[sizeof (string_constant) - 1]) \
+ || !line[sizeof (string_constant) - 1]))
-time_t http_atotm PARAMS ((char *));
+#ifdef __VMS
+#define SET_USER_AGENT(req) do { \
+ if (!opt.useragent) \
+ request_set_header (req, "User-Agent", \
+ aprintf ("Wget/%s (VMS %s %s)", \
+ version_string, vms_arch(), vms_vers()), \
+ rel_value); \
+ else if (*opt.useragent) \
+ request_set_header (req, "User-Agent", opt.useragent, rel_none); \
+} while (0)
+#else /* def __VMS */
+#define SET_USER_AGENT(req) do { \
+ if (!opt.useragent) \
+ request_set_header (req, "User-Agent", \
+ aprintf ("Wget/%s (%s)", \
+ version_string, OS_TYPE), \
+ rel_value); \
+ else if (*opt.useragent) \
+ request_set_header (req, "User-Agent", opt.useragent, rel_none); \
+} while (0)
+#endif /* def __VMS [else] */
-#define BEGINS_WITH(line, string_constant) \
- (!strncasecmp (line, string_constant, sizeof (string_constant) - 1) \
- && (ISSPACE (line[sizeof (string_constant) - 1]) \
- || !line[sizeof (string_constant) - 1]))
+/* The flags that allow clobbering the file (opening with "wb").
+ Defined here to avoid repetition later. #### This will require
+ rework. */
+#define ALLOW_CLOBBER (opt.noclobber || opt.always_rest || opt.timestamping \
+ || opt.dirstruct || opt.output_document)
/* Retrieve a document through HTTP protocol. It recognizes status
code, and correctly handles redirections. It closes the network
will print it if there is enough information to do so (almost
always), returning the error to the caller (i.e. http_loop).
- Various HTTP parameters are stored to hs. Although it parses the
- response code correctly, it is not used in a sane way. The caller
- can do that, though.
+ Various HTTP parameters are stored to hs.
- If u->proxy is non-NULL, the URL u will be taken as a proxy URL,
- and u->proxy->url will be given to the proxy server (bad naming,
- I'm afraid). */
+ If PROXY is non-NULL, the connection will be made to the proxy
+ server, and u->url will be requested. */
static uerr_t
-gethttp (struct urlinfo *u, struct http_stat *hs, int *dt)
+gethttp (struct url *u, struct http_stat *hs, int *dt, struct url *proxy,
+ struct iri *iri)
{
- char *request, *type, *command, *path;
+ struct request *req;
+
+ char *type;
char *user, *passwd;
- char *pragma_h, *referer, *useragent, *range, *wwwauth, *remhost;
- char *authenticate_h;
char *proxyauth;
- char *all_headers;
- char *port_maybe;
- char *request_keep_alive;
- int sock, hcount, num_written, all_length, remport, statcode;
- long contlen, contrange;
- struct urlinfo *ou;
- uerr_t err;
+ int statcode;
+ int write_error;
+ wgint contlen, contrange;
+ struct url *conn;
FILE *fp;
- int auth_tried_already;
- struct rbuf rbuf;
-#ifdef HAVE_SSL
- static SSL_CTX *ssl_ctx = NULL;
- SSL *ssl = NULL;
-#endif /* HAVE_SSL */
- struct wget_timer *timer;
- char *cookies = NULL;
- /* Whether this connection will be kept alive after the HTTP request
- is done. */
- int keep_alive;
+ int sock = -1;
+ int flags;
- /* Flags that detect the two ways of specifying HTTP keep-alive
- response. */
- int http_keep_alive_1, http_keep_alive_2;
+ /* Set to 1 when the authorization has already been sent and should
+ not be tried again. */
+ bool auth_finished = false;
- /* Whether keep-alive should be inhibited. */
- int inhibit_keep_alive;
+ /* Set to 1 when just globally-set Basic authorization has been sent;
+ * should prevent further Basic negotiations, but not other
+ * mechanisms. */
+ bool basic_auth_finished = false;
-#ifdef HAVE_SSL
- /* initialize ssl_ctx on first run */
- if (!ssl_ctx)
- {
- err=init_ssl (&ssl_ctx);
- if (err != 0)
- {
- switch (err)
- {
- case SSLERRCTXCREATE:
- /* this is fatal */
- logprintf (LOG_NOTQUIET, _("Failed to set up an SSL context\n"));
- ssl_printerrors ();
- return err;
- case SSLERRCERTFILE:
- /* try without certfile */
- logprintf (LOG_NOTQUIET,
- _("Failed to load certificates from %s\n"),
- opt.sslcertfile);
- ssl_printerrors ();
- logprintf (LOG_NOTQUIET,
- _("Trying without the specified certificate\n"));
- break;
- case SSLERRCERTKEY:
- logprintf (LOG_NOTQUIET,
- _("Failed to get certificate key from %s\n"),
- opt.sslcertkey);
- ssl_printerrors ();
- logprintf (LOG_NOTQUIET,
- _("Trying without the specified certificate\n"));
- break;
- default:
- break;
- }
- }
- }
-#endif /* HAVE_SSL */
+ /* Whether NTLM authentication is used for this request. */
+ bool ntlm_seen = false;
- if (!(*dt & HEAD_ONLY))
- /* If we're doing a GET on the URL, as opposed to just a HEAD, we need to
- know the local filename so we can save to it. */
- assert (u->local != NULL);
+ /* Whether our connection to the remote host is through SSL. */
+ bool using_ssl = false;
- authenticate_h = 0;
- auth_tried_already = 0;
+ /* Whether a HEAD request will be issued (as opposed to GET or
+ POST). */
+ bool head_only = !!(*dt & HEAD_ONLY);
- inhibit_keep_alive = (!opt.http_keep_alive || u->proxy != NULL);
+ char *head;
+ struct response *resp;
+ char hdrval[256];
+ char *message;
- again:
- /* We need to come back here when the initial attempt to retrieve
- without authorization header fails. (Expected to happen at least
- for the Digest authorization scheme.) */
+ /* Whether this connection will be kept alive after the HTTP request
+ is done. */
+ bool keep_alive;
- keep_alive = 0;
- http_keep_alive_1 = http_keep_alive_2 = 0;
+ /* Whether keep-alive should be inhibited.
- if (opt.cookies)
- cookies = build_cookies_request (u->host, u->port, u->path,
- u->proto == URLHTTPS);
+ RFC 2068 requests that 1.0 clients not send keep-alive requests
+ to proxies. This is because many 1.0 proxies do not interpret
+ the Connection header and transfer it to the remote server,
+ causing it to not close the connection and leave both the proxy
+ and the client hanging. */
+ bool inhibit_keep_alive =
+ !opt.http_keep_alive || opt.ignore_length || proxy != NULL;
+
+ /* Headers sent when using POST. */
+ wgint post_data_size = 0;
+
+ bool host_lookup_failed = false;
+
+#ifdef HAVE_SSL
+ if (u->scheme == SCHEME_HTTPS)
+ {
+ /* Initialize the SSL context. After this has once been done,
+ it becomes a no-op. */
+ if (!ssl_init ())
+ {
+ scheme_disable (SCHEME_HTTPS);
+ logprintf (LOG_NOTQUIET,
+ _("Disabling SSL due to encountered errors.\n"));
+ return SSLINITFAILED;
+ }
+ }
+#endif /* HAVE_SSL */
/* Initialize certain elements of struct http_stat. */
- hs->len = 0L;
+ hs->len = 0;
hs->contlen = -1;
hs->res = -1;
+ hs->rderrmsg = NULL;
hs->newloc = NULL;
hs->remote_time = NULL;
hs->error = NULL;
+ hs->message = NULL;
- /* Which structure to use to retrieve the original URL data. */
- if (u->proxy)
- ou = u->proxy;
- else
- ou = u;
+ conn = u;
- /* First: establish the connection. */
- if (inhibit_keep_alive
- ||
-#ifndef HAVE_SSL
- !persistent_available_p (u->host, u->port)
-#else
- !persistent_available_p (u->host, u->port, (u->proto==URLHTTPS ? 1 : 0))
-#endif /* HAVE_SSL */
- )
- {
- logprintf (LOG_VERBOSE, _("Connecting to %s:%hu... "), u->host, u->port);
- err = make_connection (&sock, u->host, u->port);
- switch (err)
- {
- case HOSTERR:
- logputs (LOG_VERBOSE, "\n");
- logprintf (LOG_NOTQUIET, "%s: %s.\n", u->host, herrmsg (h_errno));
- return HOSTERR;
- break;
- case CONSOCKERR:
- logputs (LOG_VERBOSE, "\n");
- logprintf (LOG_NOTQUIET, "socket: %s\n", strerror (errno));
- return CONSOCKERR;
- break;
- case CONREFUSED:
- logputs (LOG_VERBOSE, "\n");
- logprintf (LOG_NOTQUIET,
- _("Connection to %s:%hu refused.\n"), u->host, u->port);
- CLOSE (sock);
- return CONREFUSED;
- case CONERROR:
- logputs (LOG_VERBOSE, "\n");
- logprintf (LOG_NOTQUIET, "connect: %s\n", strerror (errno));
- CLOSE (sock);
- return CONERROR;
- break;
- case NOCONERROR:
- /* Everything is fine! */
- logputs (LOG_VERBOSE, _("connected!\n"));
- break;
- default:
- abort ();
- break;
- }
+ /* Prepare the request to send. */
+
+ req = request_new ();
+ {
+ char *meth_arg;
+ const char *meth = "GET";
+ if (head_only)
+ meth = "HEAD";
+ else if (opt.post_file_name || opt.post_data)
+ meth = "POST";
+ /* Use the full path, i.e. one that includes the leading slash and
+ the query string. E.g. if u->path is "foo/bar" and u->query is
+ "param=value", full_path will be "/foo/bar?param=value". */
+ if (proxy
#ifdef HAVE_SSL
- if (u->proto == URLHTTPS)
- if (connect_ssl (&ssl, ssl_ctx,sock) != 0)
- {
- logputs (LOG_VERBOSE, "\n");
- logprintf (LOG_NOTQUIET, _("Unable to establish SSL connection.\n"));
- CLOSE (sock);
- return CONSSLERR;
- }
-#endif /* HAVE_SSL */
- }
- else
+ /* When using SSL over proxy, CONNECT establishes a direct
+ connection to the HTTPS server. Therefore use the same
+ argument as when talking to the server directly. */
+ && u->scheme != SCHEME_HTTPS
+#endif
+ )
+ meth_arg = xstrdup (u->url);
+ else
+ meth_arg = url_full_path (u);
+ request_set_method (req, meth, meth_arg);
+ }
+
+ request_set_header (req, "Referer", (char *) hs->referer, rel_none);
+ if (*dt & SEND_NOCACHE)
+ request_set_header (req, "Pragma", "no-cache", rel_none);
+ if (hs->restval)
+ request_set_header (req, "Range",
+ aprintf ("bytes=%s-",
+ number_to_static_string (hs->restval)),
+ rel_value);
+ SET_USER_AGENT (req);
+ request_set_header (req, "Accept", "*/*", rel_none);
+
+ /* Find the username and password for authentication. */
+ user = u->user;
+ passwd = u->passwd;
+ search_netrc (u->host, (const char **)&user, (const char **)&passwd, 0);
+ user = user ? user : (opt.http_user ? opt.http_user : opt.user);
+ passwd = passwd ? passwd : (opt.http_passwd ? opt.http_passwd : opt.passwd);
+
+ /* We only do "site-wide" authentication with "global" user/password
+ * values unless --auth-no-challange has been requested; URL user/password
+ * info overrides. */
+ if (user && passwd && (!u->user || opt.auth_without_challenge))
{
- logprintf (LOG_VERBOSE, _("Reusing connection to %s:%hu.\n"), u->host, u->port);
- /* #### pc_last_fd should be accessed through an accessor
- function. */
- sock = pc_last_fd;
-#ifdef HAVE_SSL
- ssl = pc_last_ssl;
-#endif /* HAVE_SSL */
- DEBUGP (("Reusing fd %d.\n", sock));
+ /* If this is a host for which we've already received a Basic
+ * challenge, we'll go ahead and send Basic authentication creds. */
+ basic_auth_finished = maybe_send_basic_creds(u->host, user, passwd, req);
}
- if (u->proxy)
- path = u->proxy->url;
- else
- path = u->path;
-
- command = (*dt & HEAD_ONLY) ? "HEAD" : "GET";
- referer = NULL;
- if (ou->referer)
- {
- referer = (char *)alloca (9 + strlen (ou->referer) + 3);
- sprintf (referer, "Referer: %s\r\n", ou->referer);
- }
- if (*dt & SEND_NOCACHE)
- pragma_h = "Pragma: no-cache\r\n";
- else
- pragma_h = "";
- if (hs->restval)
+ /* Generate the Host header, HOST:PORT. Take into account that:
+
+ - Broken server-side software often doesn't recognize the PORT
+ argument, so we must generate "Host: www.server.com" instead of
+ "Host: www.server.com:80" (and likewise for https port).
+
+ - IPv6 addresses contain ":", so "Host: 3ffe:8100:200:2::2:1234"
+ becomes ambiguous and needs to be rewritten as "Host:
+ [3ffe:8100:200:2::2]:1234". */
+ {
+ /* Formats arranged for hfmt[add_port][add_squares]. */
+ static const char *hfmt[][2] = {
+ { "%s", "[%s]" }, { "%s:%d", "[%s]:%d" }
+ };
+ int add_port = u->port != scheme_default_port (u->scheme);
+ int add_squares = strchr (u->host, ':') != NULL;
+ request_set_header (req, "Host",
+ aprintf (hfmt[add_port][add_squares], u->host, u->port),
+ rel_value);
+ }
+
+ if (!inhibit_keep_alive)
+ request_set_header (req, "Connection", "Keep-Alive", rel_none);
+
+ if (opt.cookies)
+ request_set_header (req, "Cookie",
+ cookie_header (wget_cookie_jar,
+ u->host, u->port, u->path,
+#ifdef HAVE_SSL
+ u->scheme == SCHEME_HTTPS
+#else
+ 0
+#endif
+ ),
+ rel_value);
+
+ if (opt.post_data || opt.post_file_name)
{
- range = (char *)alloca (13 + numdigit (hs->restval) + 4);
- /* Gag me! Some servers (e.g. WebSitePro) have been known to
- respond to the following `Range' format by generating a
- multipart/x-byte-ranges MIME document! This MIME type was
- present in an old draft of the byteranges specification.
- HTTP/1.1 specifies a multipart/byte-ranges MIME type, but
- only if multiple non-overlapping ranges are requested --
- which Wget never does. */
- sprintf (range, "Range: bytes=%ld-\r\n", hs->restval);
+ request_set_header (req, "Content-Type",
+ "application/x-www-form-urlencoded", rel_none);
+ if (opt.post_data)
+ post_data_size = strlen (opt.post_data);
+ else
+ {
+ post_data_size = file_size (opt.post_file_name);
+ if (post_data_size == -1)
+ {
+ logprintf (LOG_NOTQUIET, _("POST data file %s missing: %s\n"),
+ quote (opt.post_file_name), strerror (errno));
+ post_data_size = 0;
+ }
+ }
+ request_set_header (req, "Content-Length",
+ xstrdup (number_to_static_string (post_data_size)),
+ rel_value);
}
- else
- range = NULL;
- if (opt.useragent)
- STRDUP_ALLOCA (useragent, opt.useragent);
- else
+
+ /* Add the user headers. */
+ if (opt.user_headers)
{
- useragent = (char *)alloca (10 + strlen (version_string));
- sprintf (useragent, "Wget/%s", version_string);
- }
- /* Construct the authentication, if userid is present. */
- user = ou->user;
- passwd = ou->passwd;
- search_netrc (u->host, (const char **)&user, (const char **)&passwd, 0);
- user = user ? user : opt.http_user;
- passwd = passwd ? passwd : opt.http_passwd;
-
- wwwauth = NULL;
- if (user && passwd)
- {
- if (!authenticate_h)
- {
- /* We have the username and the password, but haven't tried
- any authorization yet. Let's see if the "Basic" method
- works. If not, we'll come back here and construct a
- proper authorization method with the right challenges.
-
- If we didn't employ this kind of logic, every URL that
- requires authorization would have to be processed twice,
- which is very suboptimal and generates a bunch of false
- "unauthorized" errors in the server log.
-
- #### But this logic also has a serious problem when used
- with stronger authentications: we *first* transmit the
- username and the password in clear text, and *then*
- attempt a stronger authentication scheme. That cannot be
- right! We are only fortunate that almost everyone still
- uses the `Basic' scheme anyway.
-
- There should be an option to prevent this from happening,
- for those who use strong authentication schemes and value
- their passwords. */
- wwwauth = basic_authentication_encode (user, passwd, "Authorization");
- }
- else
- {
- wwwauth = create_authorization_line (authenticate_h, user, passwd,
- command, ou->path);
- }
+ int i;
+ for (i = 0; opt.user_headers[i]; i++)
+ request_set_user_header (req, opt.user_headers[i]);
}
+ retry_with_auth:
+ /* We need to come back here when the initial attempt to retrieve
+ without authorization header fails. (Expected to happen at least
+ for the Digest authorization scheme.) */
+
proxyauth = NULL;
- if (u->proxy)
+ if (proxy)
{
char *proxy_user, *proxy_passwd;
/* For normal username and password, URL components override
- command-line/wgetrc parameters. With proxy authentication,
- it's the reverse, because proxy URLs are normally the
- "permanent" ones, so command-line args should take
- precedence. */
+ command-line/wgetrc parameters. With proxy
+ authentication, it's the reverse, because proxy URLs are
+ normally the "permanent" ones, so command-line args
+ should take precedence. */
if (opt.proxy_user && opt.proxy_passwd)
- {
- proxy_user = opt.proxy_user;
- proxy_passwd = opt.proxy_passwd;
- }
+ {
+ proxy_user = opt.proxy_user;
+ proxy_passwd = opt.proxy_passwd;
+ }
else
- {
- proxy_user = u->user;
- proxy_passwd = u->passwd;
- }
- /* #### This is junky. Can't the proxy request, say, `Digest'
- authentication? */
+ {
+ proxy_user = proxy->user;
+ proxy_passwd = proxy->passwd;
+ }
+ /* #### This does not appear right. Can't the proxy request,
+ say, `Digest' authentication? */
if (proxy_user && proxy_passwd)
- proxyauth = basic_authentication_encode (proxy_user, proxy_passwd,
- "Proxy-Authorization");
+ proxyauth = basic_authentication_encode (proxy_user, proxy_passwd);
+
+ /* If we're using a proxy, we will be connecting to the proxy
+ server. */
+ conn = proxy;
+
+ /* Proxy authorization over SSL is handled below. */
+#ifdef HAVE_SSL
+ if (u->scheme != SCHEME_HTTPS)
+#endif
+ request_set_header (req, "Proxy-Authorization", proxyauth, rel_value);
}
- remhost = ou->host;
- remport = ou->port;
- /* String of the form :PORT. Used only for non-standard ports. */
- port_maybe = NULL;
- if (1
+ keep_alive = false;
+
+ /* Establish the connection. */
+
+ if (!inhibit_keep_alive)
+ {
+ /* Look for a persistent connection to target host, unless a
+ proxy is used. The exception is when SSL is in use, in which
+ case the proxy is nothing but a passthrough to the target
+ host, registered as a connection to the latter. */
+ struct url *relevant = conn;
+#ifdef HAVE_SSL
+ if (u->scheme == SCHEME_HTTPS)
+ relevant = u;
+#endif
+
+ if (persistent_available_p (relevant->host, relevant->port,
#ifdef HAVE_SSL
- && remport != (u->proto == URLHTTPS
- ? DEFAULT_HTTPS_PORT : DEFAULT_HTTP_PORT)
+ relevant->scheme == SCHEME_HTTPS,
#else
- && remport != DEFAULT_HTTP_PORT
+ 0,
#endif
- )
- {
- port_maybe = (char *)alloca (numdigit (remport) + 2);
- sprintf (port_maybe, ":%d", remport);
+ &host_lookup_failed))
+ {
+ sock = pconn.socket;
+ using_ssl = pconn.ssl;
+ logprintf (LOG_VERBOSE, _("Reusing existing connection to %s:%d.\n"),
+ quotearg_style (escape_quoting_style, pconn.host),
+ pconn.port);
+ DEBUGP (("Reusing fd %d.\n", sock));
+ if (pconn.authorized)
+ /* If the connection is already authorized, the "Basic"
+ authorization added by code above is unnecessary and
+ only hurts us. */
+ request_remove_header (req, "Authorization");
+ }
+ else if (host_lookup_failed)
+ {
+ request_free (req);
+ logprintf(LOG_NOTQUIET,
+ _("%s: unable to resolve host address %s\n"),
+ exec_name, quote (relevant->host));
+ return HOSTERR;
+ }
}
- if (!inhibit_keep_alive)
- request_keep_alive = "Connection: Keep-Alive\r\n";
- else
- request_keep_alive = NULL;
-
- /* Allocate the memory for the request. */
- request = (char *)alloca (strlen (command) + strlen (path)
- + strlen (useragent)
- + strlen (remhost)
- + (port_maybe ? strlen (port_maybe) : 0)
- + strlen (HTTP_ACCEPT)
- + (request_keep_alive
- ? strlen (request_keep_alive) : 0)
- + (referer ? strlen (referer) : 0)
- + (cookies ? strlen (cookies) : 0)
- + (wwwauth ? strlen (wwwauth) : 0)
- + (proxyauth ? strlen (proxyauth) : 0)
- + (range ? strlen (range) : 0)
- + strlen (pragma_h)
- + (opt.user_header ? strlen (opt.user_header) : 0)
- + 64);
- /* Construct the request. */
- sprintf (request, "\
-%s %s HTTP/1.0\r\n\
-User-Agent: %s\r\n\
-Host: %s%s\r\n\
-Accept: %s\r\n\
-%s%s%s%s%s%s%s%s\r\n",
- command, path, useragent, remhost,
- port_maybe ? port_maybe : "",
- HTTP_ACCEPT,
- request_keep_alive ? request_keep_alive : "",
- referer ? referer : "",
- cookies ? cookies : "",
- wwwauth ? wwwauth : "",
- proxyauth ? proxyauth : "",
- range ? range : "",
- pragma_h,
- opt.user_header ? opt.user_header : "");
- DEBUGP (("---request begin---\n%s---request end---\n", request));
- /* Free the temporary memory. */
- FREE_MAYBE (wwwauth);
- FREE_MAYBE (proxyauth);
- FREE_MAYBE (cookies);
+ if (sock < 0)
+ {
+ sock = connect_to_host (conn->host, conn->port);
+ if (sock == E_HOST)
+ {
+ request_free (req);
+ return HOSTERR;
+ }
+ else if (sock < 0)
+ {
+ request_free (req);
+ return (retryable_socket_connect_error (errno)
+ ? CONERROR : CONIMPOSSIBLE);
+ }
- /* Send the request to server. */
#ifdef HAVE_SSL
- if (u->proto == URLHTTPS)
- num_written = ssl_iwrite (ssl, request, strlen (request));
- else
+ if (proxy && u->scheme == SCHEME_HTTPS)
+ {
+ /* When requesting SSL URLs through proxies, use the
+ CONNECT method to request passthrough. */
+ struct request *connreq = request_new ();
+ request_set_method (connreq, "CONNECT",
+ aprintf ("%s:%d", u->host, u->port));
+ SET_USER_AGENT (connreq);
+ if (proxyauth)
+ {
+ request_set_header (connreq, "Proxy-Authorization",
+ proxyauth, rel_value);
+ /* Now that PROXYAUTH is part of the CONNECT request,
+ zero it out so we don't send proxy authorization with
+ the regular request below. */
+ proxyauth = NULL;
+ }
+ /* Examples in rfc2817 use the Host header in CONNECT
+ requests. I don't see how that gains anything, given
+ that the contents of Host would be exactly the same as
+ the contents of CONNECT. */
+
+ write_error = request_send (connreq, sock);
+ request_free (connreq);
+ if (write_error < 0)
+ {
+ CLOSE_INVALIDATE (sock);
+ return WRITEFAILED;
+ }
+
+ head = read_http_response_head (sock);
+ if (!head)
+ {
+ logprintf (LOG_VERBOSE, _("Failed reading proxy response: %s\n"),
+ fd_errstr (sock));
+ CLOSE_INVALIDATE (sock);
+ return HERR;
+ }
+ message = NULL;
+ if (!*head)
+ {
+ xfree (head);
+ goto failed_tunnel;
+ }
+ DEBUGP (("proxy responded with: [%s]\n", head));
+
+ resp = resp_new (head);
+ statcode = resp_status (resp, &message);
+ hs->message = xstrdup (message);
+ resp_free (resp);
+ xfree (head);
+ if (statcode != 200)
+ {
+ failed_tunnel:
+ logprintf (LOG_NOTQUIET, _("Proxy tunneling failed: %s"),
+ message ? quotearg_style (escape_quoting_style, message) : "?");
+ xfree_null (message);
+ return CONSSLERR;
+ }
+ xfree_null (message);
+
+ /* SOCK is now *really* connected to u->host, so update CONN
+ to reflect this. That way register_persistent will
+ register SOCK as being connected to u->host:u->port. */
+ conn = u;
+ }
+
+ if (conn->scheme == SCHEME_HTTPS)
+ {
+ if (!ssl_connect_wget (sock) || !ssl_check_certificate (sock, u->host))
+ {
+ fd_close (sock);
+ return CONSSLERR;
+ }
+ using_ssl = true;
+ }
#endif /* HAVE_SSL */
- num_written = iwrite (sock, request, strlen (request));
+ }
+
+ /* Send the request to server. */
+ write_error = request_send (req, sock);
+
+ if (write_error >= 0)
+ {
+ if (opt.post_data)
+ {
+ DEBUGP (("[POST data: %s]\n", opt.post_data));
+ write_error = fd_write (sock, opt.post_data, post_data_size, -1);
+ }
+ else if (opt.post_file_name && post_data_size != 0)
+ write_error = post_file (sock, opt.post_file_name, post_data_size);
+ }
- if (num_written < 0)
+ if (write_error < 0)
{
- logprintf (LOG_VERBOSE, _("Failed writing HTTP request: %s.\n"),
- strerror (errno));
CLOSE_INVALIDATE (sock);
+ request_free (req);
return WRITEFAILED;
}
logprintf (LOG_VERBOSE, _("%s request sent, awaiting response... "),
- u->proxy ? "Proxy" : "HTTP");
- contlen = contrange = -1;
- type = NULL;
- statcode = -1;
+ proxy ? "Proxy" : "HTTP");
+ contlen = -1;
+ contrange = 0;
*dt &= ~RETROKF;
- /* Before reading anything, initialize the rbuf. */
- rbuf_initialize (&rbuf, sock);
-#ifdef HAVE_SSL
- if (u->proto == URLHTTPS)
- rbuf.ssl = ssl;
- else
- rbuf.ssl = NULL;
-#endif /* HAVE_SSL */
- all_headers = NULL;
- all_length = 0;
- /* Header-fetching loop. */
- hcount = 0;
- while (1)
+ head = read_http_response_head (sock);
+ if (!head)
{
- char *hdr;
- int status;
-
- ++hcount;
- /* Get the header. */
- status = header_get (&rbuf, &hdr,
- /* Disallow continuations for status line. */
- (hcount == 1 ? HG_NO_CONTINUATIONS : HG_NONE));
-
- /* Check for errors. */
- if (status == HG_EOF && *hdr)
- {
- /* This used to be an unconditional error, but that was
- somewhat controversial, because of a large number of
- broken CGI's that happily "forget" to send the second EOL
- before closing the connection of a HEAD request.
-
- So, the deal is to check whether the header is empty
- (*hdr is zero if it is); if yes, it means that the
- previous header was fully retrieved, and that -- most
- probably -- the request is complete. "...be liberal in
- what you accept." Oh boy. */
- logputs (LOG_VERBOSE, "\n");
- logputs (LOG_NOTQUIET, _("End of file while parsing headers.\n"));
- xfree (hdr);
- FREE_MAYBE (type);
- FREE_MAYBE (hs->newloc);
- FREE_MAYBE (all_headers);
- CLOSE_INVALIDATE (sock);
- return HEOF;
- }
- else if (status == HG_ERROR)
- {
- logputs (LOG_VERBOSE, "\n");
- logprintf (LOG_NOTQUIET, _("Read error (%s) in headers.\n"),
- strerror (errno));
- xfree (hdr);
- FREE_MAYBE (type);
- FREE_MAYBE (hs->newloc);
- FREE_MAYBE (all_headers);
- CLOSE_INVALIDATE (sock);
- return HERR;
- }
-
- /* If the headers are to be saved to a file later, save them to
- memory now. */
- if (opt.save_headers)
- {
- int lh = strlen (hdr);
- all_headers = (char *)xrealloc (all_headers, all_length + lh + 2);
- memcpy (all_headers + all_length, hdr, lh);
- all_length += lh;
- all_headers[all_length++] = '\n';
- all_headers[all_length] = '\0';
- }
-
- /* Print the header if requested. */
- if (opt.server_response && hcount != 1)
- logprintf (LOG_VERBOSE, "\n%d %s", hcount, hdr);
-
- /* Check for status line. */
- if (hcount == 1)
- {
- const char *error;
- /* Parse the first line of server response. */
- statcode = parse_http_status_line (hdr, &error);
- hs->statcode = statcode;
- /* Store the descriptive response. */
- if (statcode == -1) /* malformed response */
- {
- /* A common reason for "malformed response" error is the
- case when no data was actually received. Handle this
- special case. */
- if (!*hdr)
- hs->error = xstrdup (_("No data received"));
- else
- hs->error = xstrdup (_("Malformed status line"));
- xfree (hdr);
- break;
- }
- else if (!*error)
- hs->error = xstrdup (_("(no description)"));
- else
- hs->error = xstrdup (error);
-
- if ((statcode != -1)
-#ifdef DEBUG
- && !opt.debug
-#endif
- )
- logprintf (LOG_VERBOSE, "%d %s", statcode, error);
+ if (errno == 0)
+ {
+ logputs (LOG_NOTQUIET, _("No data received.\n"));
+ CLOSE_INVALIDATE (sock);
+ request_free (req);
+ return HEOF;
+ }
+ else
+ {
+ logprintf (LOG_NOTQUIET, _("Read error (%s) in headers.\n"),
+ fd_errstr (sock));
+ CLOSE_INVALIDATE (sock);
+ request_free (req);
+ return HERR;
+ }
+ }
+ DEBUGP (("\n---response begin---\n%s---response end---\n", head));
- goto done_header;
- }
+ resp = resp_new (head);
- /* Exit on empty header. */
- if (!*hdr)
- {
- xfree (hdr);
- break;
- }
-
- /* Try getting content-length. */
- if (contlen == -1 && !opt.ignore_length)
- if (header_process (hdr, "Content-Length", header_extract_number,
- &contlen))
- goto done_header;
- /* Try getting content-type. */
- if (!type)
- if (header_process (hdr, "Content-Type", http_process_type, &type))
- goto done_header;
- /* Try getting location. */
- if (!hs->newloc)
- if (header_process (hdr, "Location", header_strdup, &hs->newloc))
- goto done_header;
- /* Try getting last-modified. */
- if (!hs->remote_time)
- if (header_process (hdr, "Last-Modified", header_strdup,
- &hs->remote_time))
- goto done_header;
- /* Try getting cookies. */
- if (opt.cookies)
- if (header_process (hdr, "Set-Cookie", set_cookie_header_cb, u))
- goto done_header;
- /* Try getting www-authentication. */
- if (!authenticate_h)
- if (header_process (hdr, "WWW-Authenticate", header_strdup,
- &authenticate_h))
- goto done_header;
- /* Check for accept-ranges header. If it contains the word
- `none', disable the ranges. */
- if (*dt & ACCEPTRANGES)
- {
- int nonep;
- if (header_process (hdr, "Accept-Ranges", http_process_none, &nonep))
- {
- if (nonep)
- *dt &= ~ACCEPTRANGES;
- goto done_header;
- }
- }
- /* Try getting content-range. */
- if (contrange == -1)
- {
- struct http_process_range_closure closure;
- if (header_process (hdr, "Content-Range", http_process_range, &closure))
- {
- contrange = closure.first_byte_pos;
- goto done_header;
- }
- }
- /* Check for keep-alive related responses. */
- if (!inhibit_keep_alive)
- {
- /* Check for the `Keep-Alive' header. */
- if (!http_keep_alive_1)
- {
- if (header_process (hdr, "Keep-Alive", header_exists,
- &http_keep_alive_1))
- goto done_header;
- }
- /* Check for `Connection: Keep-Alive'. */
- if (!http_keep_alive_2)
- {
- if (header_process (hdr, "Connection", http_process_connection,
- &http_keep_alive_2))
- goto done_header;
- }
- }
- done_header:
- xfree (hdr);
- }
-
- logputs (LOG_VERBOSE, "\n");
-
- if (contlen != -1
- && (http_keep_alive_1 || http_keep_alive_2))
- {
- assert (inhibit_keep_alive == 0);
- keep_alive = 1;
+ /* Check for status line. */
+ message = NULL;
+ statcode = resp_status (resp, &message);
+ hs->message = xstrdup (message);
+ if (!opt.server_response)
+ logprintf (LOG_VERBOSE, "%2d %s\n", statcode,
+ message ? quotearg_style (escape_quoting_style, message) : "");
+ else
+ {
+ logprintf (LOG_VERBOSE, "\n");
+ print_server_response (resp, " ");
+ }
+
+ /* Check for keep-alive related responses. */
+ if (!inhibit_keep_alive && contlen != -1)
+ {
+ if (resp_header_copy (resp, "Keep-Alive", NULL, 0))
+ keep_alive = true;
+ else if (resp_header_copy (resp, "Connection", hdrval, sizeof (hdrval)))
+ {
+ if (0 == strcasecmp (hdrval, "Keep-Alive"))
+ keep_alive = true;
+ }
}
+
if (keep_alive)
/* The server has promised that it will not close the connection
when we're done. This means that we can register it. */
-#ifndef HAVE_SSL
- register_persistent (u->host, u->port, sock);
-#else
- register_persistent (u->host, u->port, sock, ssl);
-#endif /* HAVE_SSL */
+ register_persistent (conn->host, conn->port, sock, using_ssl);
- if ((statcode == HTTP_STATUS_UNAUTHORIZED)
- && authenticate_h)
+ if (statcode == HTTP_STATUS_UNAUTHORIZED)
{
/* Authorization is required. */
- FREE_MAYBE (type);
- type = NULL;
- FREEHSTAT (*hs);
- CLOSE_INVALIDATE (sock); /* would be CLOSE_FINISH, but there
- might be more bytes in the body. */
- if (auth_tried_already)
- {
- /* If we have tried it already, then there is not point
- retrying it. */
- failed:
- logputs (LOG_NOTQUIET, _("Authorization failed.\n"));
- xfree (authenticate_h);
- return AUTHFAILED;
- }
- else if (!known_authentication_scheme_p (authenticate_h))
- {
- xfree (authenticate_h);
- logputs (LOG_NOTQUIET, _("Unknown authentication scheme.\n"));
- return AUTHFAILED;
- }
- else if (BEGINS_WITH (authenticate_h, "Basic"))
- {
- /* The authentication scheme is basic, the one we try by
- default, and it failed. There's no sense in trying
- again. */
- goto failed;
- }
+ if (keep_alive && !head_only && skip_short_body (sock, contlen))
+ CLOSE_FINISH (sock);
else
- {
- auth_tried_already = 1;
- goto again;
- }
+ CLOSE_INVALIDATE (sock);
+ pconn.authorized = false;
+ if (!auth_finished && (user && passwd))
+ {
+ /* IIS sends multiple copies of WWW-Authenticate, one with
+ the value "negotiate", and other(s) with data. Loop over
+ all the occurrences and pick the one we recognize. */
+ int wapos;
+ const char *wabeg, *waend;
+ char *www_authenticate = NULL;
+ for (wapos = 0;
+ (wapos = resp_header_locate (resp, "WWW-Authenticate", wapos,
+ &wabeg, &waend)) != -1;
+ ++wapos)
+ if (known_authentication_scheme_p (wabeg, waend))
+ {
+ BOUNDED_TO_ALLOCA (wabeg, waend, www_authenticate);
+ break;
+ }
+
+ if (!www_authenticate)
+ {
+ /* If the authentication header is missing or
+ unrecognized, there's no sense in retrying. */
+ logputs (LOG_NOTQUIET, _("Unknown authentication scheme.\n"));
+ }
+ else if (!basic_auth_finished
+ || !BEGINS_WITH (www_authenticate, "Basic"))
+ {
+ char *pth;
+ pth = url_full_path (u);
+ request_set_header (req, "Authorization",
+ create_authorization_line (www_authenticate,
+ user, passwd,
+ request_method (req),
+ pth,
+ &auth_finished),
+ rel_value);
+ if (BEGINS_WITH (www_authenticate, "NTLM"))
+ ntlm_seen = true;
+ else if (!u->user && BEGINS_WITH (www_authenticate, "Basic"))
+ {
+ /* Need to register this host as using basic auth,
+ * so we automatically send creds next time. */
+ register_basic_auth_host (u->host);
+ }
+ xfree (pth);
+ xfree_null (message);
+ resp_free (resp);
+ xfree (head);
+ goto retry_with_auth;
+ }
+ else
+ {
+ /* We already did Basic auth, and it failed. Gotta
+ * give up. */
+ }
+ }
+ logputs (LOG_NOTQUIET, _("Authorization failed.\n"));
+ request_free (req);
+ xfree_null (message);
+ resp_free (resp);
+ xfree (head);
+ return AUTHFAILED;
}
- /* We do not need this anymore. */
- if (authenticate_h)
+ else /* statcode != HTTP_STATUS_UNAUTHORIZED */
{
- xfree (authenticate_h);
- authenticate_h = NULL;
+ /* Kludge: if NTLM is used, mark the TCP connection as authorized. */
+ if (ntlm_seen)
+ pconn.authorized = true;
}
- /* 20x responses are counted among successful by default. */
- if (H_20X (statcode))
- *dt |= RETROKF;
+ /* Determine the local filename if needed. Notice that if -O is used
+ * hstat.local_file is set by http_loop to the argument of -O. */
+ if (!hs->local_file)
+ {
+ /* Honor Content-Disposition whether possible. */
+ if (!opt.content_disposition
+ || !resp_header_copy (resp, "Content-Disposition",
+ hdrval, sizeof (hdrval))
+ || !parse_content_disposition (hdrval, &hs->local_file))
+ {
+ /* The Content-Disposition header is missing or broken.
+ * Choose unique file name according to given URL. */
+ hs->local_file = url_file_name (u);
+ }
+ }
- if (type && !strncasecmp (type, TEXTHTML_S, strlen (TEXTHTML_S)))
- *dt |= TEXTHTML;
- else
- /* We don't assume text/html by default. */
- *dt &= ~TEXTHTML;
+ /* TODO: perform this check only once. */
+ if (!hs->existence_checked && file_exists_p (hs->local_file))
+ {
+ if (opt.noclobber && !opt.output_document)
+ {
+ /* If opt.noclobber is turned on and file already exists, do not
+ retrieve the file. But if the output_document was given, then this
+ test was already done and the file didn't exist. Hence the !opt.output_document */
+ logprintf (LOG_VERBOSE, _("\
+File %s already there; not retrieving.\n\n"), quote (hs->local_file));
+ /* If the file is there, we suppose it's retrieved OK. */
+ *dt |= RETROKF;
+
+ /* #### Bogusness alert. */
+ /* If its suffix is "html" or "htm" or similar, assume text/html. */
+ if (has_html_suffix_p (hs->local_file))
+ *dt |= TEXTHTML;
+
+ xfree (head);
+ xfree_null (message);
+ return RETRUNNEEDED;
+ }
+ else if (!ALLOW_CLOBBER)
+ {
+ char *unique = unique_name (hs->local_file, true);
+ if (unique != hs->local_file)
+ xfree (hs->local_file);
+ hs->local_file = unique;
+ }
+ }
+ hs->existence_checked = true;
- if (opt.html_extension && (*dt & TEXTHTML))
- /* -E / --html-extension / html_extension = on was specified, and this is a
- text/html file. If some case-insensitive variation on ".htm[l]" isn't
- already the file's suffix, tack on ".html". */
- {
- char* last_period_in_local_filename = strrchr(u->local, '.');
-
- if (last_period_in_local_filename == NULL ||
- !(strcasecmp(last_period_in_local_filename, ".htm") == EQ ||
- strcasecmp(last_period_in_local_filename, ".html") == EQ))
- {
- size_t local_filename_len = strlen(u->local);
-
- u->local = xrealloc(u->local, local_filename_len + sizeof(".html"));
- strcpy(u->local + local_filename_len, ".html");
-
- *dt |= ADDED_HTML_EXTENSION;
- }
- }
-
- if (contrange == -1)
- {
- /* We did not get a content-range header. This means that the
- server did not honor our `Range' request. Normally, this
- means we should reset hs->restval and continue normally. */
-
- /* However, if `-c' is used, we need to be a bit more careful:
-
- 1. If `-c' is specified and the file already existed when
- Wget was started, it would be a bad idea for us to start
- downloading it from scratch, effectively truncating it. I
- believe this cannot happen unless `-c' was specified.
-
- 2. If `-c' is used on a file that is already fully
- downloaded, we're requesting bytes after the end of file,
- which can result in server not honoring `Range'. If this is
- the case, `Content-Length' will be equal to the length of the
- file. */
- if (opt.always_rest)
- {
- /* Check for condition #2. */
- if (hs->restval == contlen)
- {
- logputs (LOG_VERBOSE, _("\
-\n The file is already fully retrieved; nothing to do.\n\n"));
- /* In case the caller inspects. */
- hs->len = contlen;
- hs->res = 0;
- FREE_MAYBE (type);
- FREE_MAYBE (hs->newloc);
- FREE_MAYBE (all_headers);
- CLOSE_INVALIDATE (sock); /* would be CLOSE_FINISH, but there
- might be more bytes in the body. */
- return RETRFINISHED;
- }
-
- /* Check for condition #1. */
- if (hs->no_truncate)
- {
- logprintf (LOG_NOTQUIET,
- _("\
-\n\
- The server does not support continued download;\n\
- refusing to truncate `%s'.\n\n"), u->local);
- return CONTNOTSUPPORTED;
- }
-
- /* Fallthrough */
- }
-
- hs->restval = 0;
- }
-
- else if (contrange != hs->restval ||
- (H_PARTIAL (statcode) && contrange == -1))
- {
- /* This means the whole request was somehow misunderstood by the
- server. Bail out. */
- FREE_MAYBE (type);
- FREE_MAYBE (hs->newloc);
- FREE_MAYBE (all_headers);
- CLOSE_INVALIDATE (sock);
- return RANGEERR;
+ /* Support timestamping */
+ /* TODO: move this code out of gethttp. */
+ if (opt.timestamping && !hs->timestamp_checked)
+ {
+ size_t filename_len = strlen (hs->local_file);
+ char *filename_plus_orig_suffix = alloca (filename_len + sizeof (ORIG_SFX));
+ bool local_dot_orig_file_exists = false;
+ char *local_filename = NULL;
+ struct_stat st;
+
+ if (opt.backup_converted)
+ /* If -K is specified, we'll act on the assumption that it was specified
+ last time these files were downloaded as well, and instead of just
+ comparing local file X against server file X, we'll compare local
+ file X.orig (if extant, else X) against server file X. If -K
+ _wasn't_ specified last time, or the server contains files called
+ *.orig, -N will be back to not operating correctly with -k. */
+ {
+ /* Would a single s[n]printf() call be faster? --dan
+
+ Definitely not. sprintf() is horribly slow. It's a
+ different question whether the difference between the two
+ affects a program. Usually I'd say "no", but at one
+ point I profiled Wget, and found that a measurable and
+ non-negligible amount of time was lost calling sprintf()
+ in url.c. Replacing sprintf with inline calls to
+ strcpy() and number_to_string() made a difference.
+ --hniksic */
+ memcpy (filename_plus_orig_suffix, hs->local_file, filename_len);
+ memcpy (filename_plus_orig_suffix + filename_len,
+ ORIG_SFX, sizeof (ORIG_SFX));
+
+ /* Try to stat() the .orig file. */
+ if (stat (filename_plus_orig_suffix, &st) == 0)
+ {
+ local_dot_orig_file_exists = true;
+ local_filename = filename_plus_orig_suffix;
+ }
+ }
+
+ if (!local_dot_orig_file_exists)
+ /* Couldn't stat() <file>.orig, so try to stat() <file>. */
+ if (stat (hs->local_file, &st) == 0)
+ local_filename = hs->local_file;
+
+ if (local_filename != NULL)
+ /* There was a local file, so we'll check later to see if the version
+ the server has is the same version we already have, allowing us to
+ skip a download. */
+ {
+ hs->orig_file_name = xstrdup (local_filename);
+ hs->orig_file_size = st.st_size;
+ hs->orig_file_tstamp = st.st_mtime;
+#ifdef WINDOWS
+ /* Modification time granularity is 2 seconds for Windows, so
+ increase local time by 1 second for later comparison. */
+ ++hs->orig_file_tstamp;
+#endif
+ }
}
- if (hs->restval)
+ if (!opt.ignore_length
+ && resp_header_copy (resp, "Content-Length", hdrval, sizeof (hdrval)))
{
- if (contlen != -1)
- contlen += contrange;
+ wgint parsed;
+ errno = 0;
+ parsed = str_to_wgint (hdrval, NULL, 10);
+ if (parsed == WGINT_MAX && errno == ERANGE)
+ {
+ /* Out of range.
+ #### If Content-Length is out of range, it most likely
+ means that the file is larger than 2G and that we're
+ compiled without LFS. In that case we should probably
+ refuse to even attempt to download the file. */
+ contlen = -1;
+ }
+ else if (parsed < 0)
+ {
+ /* Negative Content-Length; nonsensical, so we can't
+ assume any information about the content to receive. */
+ contlen = -1;
+ }
else
- contrange = -1; /* If conent-length was not sent,
- content-range will be ignored. */
+ contlen = parsed;
+ }
+
+ request_free (req);
+
+ hs->statcode = statcode;
+ if (statcode == -1)
+ hs->error = xstrdup (_("Malformed status line"));
+ else if (!*message)
+ hs->error = xstrdup (_("(no description)"));
+ else
+ hs->error = xstrdup (message);
+ xfree_null (message);
+
+ type = resp_header_strdup (resp, "Content-Type");
+ if (type)
+ {
+ char *tmp = strchr (type, ';');
+ if (tmp)
+ {
+ /* sXXXav: only needed if IRI support is enabled */
+ char *tmp2 = tmp + 1;
+
+ while (tmp > type && c_isspace (tmp[-1]))
+ --tmp;
+ *tmp = '\0';
+
+ /* Try to get remote encoding if needed */
+ if (opt.enable_iri && !opt.encoding_remote)
+ {
+ tmp = parse_charset (tmp2);
+ if (tmp)
+ set_content_encoding (iri, tmp);
+ }
+ }
+ }
+ hs->newloc = resp_header_strdup (resp, "Location");
+ hs->remote_time = resp_header_strdup (resp, "Last-Modified");
+
+ /* Handle (possibly multiple instances of) the Set-Cookie header. */
+ if (opt.cookies)
+ {
+ int scpos;
+ const char *scbeg, *scend;
+ /* The jar should have been created by now. */
+ assert (wget_cookie_jar != NULL);
+ for (scpos = 0;
+ (scpos = resp_header_locate (resp, "Set-Cookie", scpos,
+ &scbeg, &scend)) != -1;
+ ++scpos)
+ {
+ char *set_cookie; BOUNDED_TO_ALLOCA (scbeg, scend, set_cookie);
+ cookie_handle_set_cookie (wget_cookie_jar, u->host, u->port,
+ u->path, set_cookie);
+ }
+ }
+
+ if (resp_header_copy (resp, "Content-Range", hdrval, sizeof (hdrval)))
+ {
+ wgint first_byte_pos, last_byte_pos, entity_length;
+ if (parse_content_range (hdrval, &first_byte_pos, &last_byte_pos,
+ &entity_length))
+ {
+ contrange = first_byte_pos;
+ contlen = last_byte_pos - first_byte_pos + 1;
+ }
}
- hs->contlen = contlen;
+ resp_free (resp);
+
+ /* 20x responses are counted among successful by default. */
+ if (H_20X (statcode))
+ *dt |= RETROKF;
/* Return if redirected. */
if (H_REDIRECTED (statcode) || statcode == HTTP_STATUS_MULTIPLE_CHOICES)
{
/* RFC2068 says that in case of the 300 (multiple choices)
- response, the server can output a preferred URL through
- `Location' header; otherwise, the request should be treated
- like GET. So, if the location is set, it will be a
- redirection; otherwise, just proceed normally. */
+ response, the server can output a preferred URL through
+ `Location' header; otherwise, the request should be treated
+ like GET. So, if the location is set, it will be a
+ redirection; otherwise, just proceed normally. */
if (statcode == HTTP_STATUS_MULTIPLE_CHOICES && !hs->newloc)
- *dt |= RETROKF;
+ *dt |= RETROKF;
else
- {
- logprintf (LOG_VERBOSE,
- _("Location: %s%s\n"),
- hs->newloc ? hs->newloc : _("unspecified"),
- hs->newloc ? _(" [following]") : "");
- CLOSE_INVALIDATE (sock); /* would be CLOSE_FINISH, but there
- might be more bytes in the body. */
- FREE_MAYBE (type);
- FREE_MAYBE (all_headers);
- return NEWLOCATION;
- }
+ {
+ logprintf (LOG_VERBOSE,
+ _("Location: %s%s\n"),
+ hs->newloc ? escnonprint_uri (hs->newloc) : _("unspecified"),
+ hs->newloc ? _(" [following]") : "");
+ if (keep_alive && !head_only && skip_short_body (sock, contlen))
+ CLOSE_FINISH (sock);
+ else
+ CLOSE_INVALIDATE (sock);
+ xfree_null (type);
+ xfree (head);
+ return NEWLOCATION;
+ }
+ }
+
+ /* If content-type is not given, assume text/html. This is because
+ of the multitude of broken CGI's that "forget" to generate the
+ content-type. */
+ if (!type ||
+ 0 == strncasecmp (type, TEXTHTML_S, strlen (TEXTHTML_S)) ||
+ 0 == strncasecmp (type, TEXTXHTML_S, strlen (TEXTXHTML_S)))
+ *dt |= TEXTHTML;
+ else
+ *dt &= ~TEXTHTML;
+
+ if (type &&
+ 0 == strncasecmp (type, TEXTCSS_S, strlen (TEXTCSS_S)))
+ *dt |= TEXTCSS;
+ else
+ *dt &= ~TEXTCSS;
+
+ if (opt.adjust_extension)
+ {
+ if (*dt & TEXTHTML)
+ /* -E / --adjust-extension / adjust_extension = on was specified,
+ and this is a text/html file. If some case-insensitive
+ variation on ".htm[l]" isn't already the file's suffix,
+ tack on ".html". */
+ {
+ ensure_extension (hs, ".html", dt);
+ }
+ else if (*dt & TEXTCSS)
+ {
+ ensure_extension (hs, ".css", dt);
+ }
+ }
+
+ if (statcode == HTTP_STATUS_RANGE_NOT_SATISFIABLE
+ || (hs->restval > 0 && statcode == HTTP_STATUS_OK
+ && contrange == 0 && hs->restval >= contlen)
+ )
+ {
+ /* If `-c' is in use and the file has been fully downloaded (or
+ the remote file has shrunk), Wget effectively requests bytes
+ after the end of file and the server response with 416
+ (or 200 with a <= Content-Length. */
+ logputs (LOG_VERBOSE, _("\
+\n The file is already fully retrieved; nothing to do.\n\n"));
+ /* In case the caller inspects. */
+ hs->len = contlen;
+ hs->res = 0;
+ /* Mark as successfully retrieved. */
+ *dt |= RETROKF;
+ xfree_null (type);
+ CLOSE_INVALIDATE (sock); /* would be CLOSE_FINISH, but there
+ might be more bytes in the body. */
+ xfree (head);
+ return RETRUNNEEDED;
+ }
+ if ((contrange != 0 && contrange != hs->restval)
+ || (H_PARTIAL (statcode) && !contrange))
+ {
+ /* The Range request was somehow misunderstood by the server.
+ Bail out. */
+ xfree_null (type);
+ CLOSE_INVALIDATE (sock);
+ xfree (head);
+ return RANGEERR;
}
+ if (contlen == -1)
+ hs->contlen = -1;
+ else
+ hs->contlen = contlen + contrange;
+
if (opt.verbose)
{
- if ((*dt & RETROKF) && !opt.server_response)
- {
- /* No need to print this output if the body won't be
- downloaded at all, or if the original server response is
- printed. */
- logputs (LOG_VERBOSE, _("Length: "));
- if (contlen != -1)
- {
- logputs (LOG_VERBOSE, legible (contlen));
- if (contrange != -1)
- logprintf (LOG_VERBOSE, _(" (%s to go)"),
- legible (contlen - contrange));
- }
- else
- logputs (LOG_VERBOSE,
- opt.ignore_length ? _("ignored") : _("unspecified"));
- if (type)
- logprintf (LOG_VERBOSE, " [%s]\n", type);
- else
- logputs (LOG_VERBOSE, "\n");
- }
- }
- FREE_MAYBE (type);
- type = NULL; /* We don't need it any more. */
+ if (*dt & RETROKF)
+ {
+ /* No need to print this output if the body won't be
+ downloaded at all, or if the original server response is
+ printed. */
+ logputs (LOG_VERBOSE, _("Length: "));
+ if (contlen != -1)
+ {
+ logputs (LOG_VERBOSE, number_to_static_string (contlen + contrange));
+ if (contlen + contrange >= 1024)
+ logprintf (LOG_VERBOSE, " (%s)",
+ human_readable (contlen + contrange));
+ if (contrange)
+ {
+ if (contlen >= 1024)
+ logprintf (LOG_VERBOSE, _(", %s (%s) remaining"),
+ number_to_static_string (contlen),
+ human_readable (contlen));
+ else
+ logprintf (LOG_VERBOSE, _(", %s remaining"),
+ number_to_static_string (contlen));
+ }
+ }
+ else
+ logputs (LOG_VERBOSE,
+ opt.ignore_length ? _("ignored") : _("unspecified"));
+ if (type)
+ logprintf (LOG_VERBOSE, " [%s]\n", quotearg_style (escape_quoting_style, type));
+ else
+ logputs (LOG_VERBOSE, "\n");
+ }
+ }
+ xfree_null (type);
+ type = NULL; /* We don't need it any more. */
/* Return if we have no intention of further downloading. */
- if (!(*dt & RETROKF) || (*dt & HEAD_ONLY))
+ if (!(*dt & RETROKF) || head_only)
{
/* In case the caller cares to look... */
- hs->len = 0L;
+ hs->len = 0;
hs->res = 0;
- FREE_MAYBE (type);
- FREE_MAYBE (all_headers);
- CLOSE_INVALIDATE (sock); /* would be CLOSE_FINISH, but there
- might be more bytes in the body. */
+ xfree_null (type);
+ if (head_only)
+ /* Pre-1.10 Wget used CLOSE_INVALIDATE here. Now we trust the
+ servers not to send body in response to a HEAD request, and
+ those that do will likely be caught by test_socket_open.
+ If not, they can be worked around using
+ `--no-http-keep-alive'. */
+ CLOSE_FINISH (sock);
+ else if (keep_alive && skip_short_body (sock, contlen))
+ /* Successfully skipped the body; also keep using the socket. */
+ CLOSE_FINISH (sock);
+ else
+ CLOSE_INVALIDATE (sock);
+ xfree (head);
return RETRFINISHED;
}
+/* 2005-06-17 SMS.
+ For VMS, define common fopen() optional arguments.
+*/
+#ifdef __VMS
+# define FOPEN_OPT_ARGS "fop=sqo", "acc", acc_cb, &open_id
+# define FOPEN_BIN_FLAG 3
+#else /* def __VMS */
+# define FOPEN_BIN_FLAG 1
+#endif /* def __VMS [else] */
+
/* Open the local file. */
- if (!opt.dfp)
+ if (!output_stream)
{
- mkalldirs (u->local);
+ mkalldirs (hs->local_file);
if (opt.backups)
- rotate_backups (u->local);
- fp = fopen (u->local, hs->restval ? "ab" : "wb");
+ rotate_backups (hs->local_file);
+ if (hs->restval)
+ {
+#ifdef __VMS
+ int open_id;
+
+ open_id = 21;
+ fp = fopen (hs->local_file, "ab", FOPEN_OPT_ARGS);
+#else /* def __VMS */
+ fp = fopen (hs->local_file, "ab");
+#endif /* def __VMS [else] */
+ }
+ else if (ALLOW_CLOBBER)
+ {
+#ifdef __VMS
+ int open_id;
+
+ open_id = 22;
+ fp = fopen (hs->local_file, "wb", FOPEN_OPT_ARGS);
+#else /* def __VMS */
+ fp = fopen (hs->local_file, "wb");
+#endif /* def __VMS [else] */
+ }
+ else
+ {
+ fp = fopen_excl (hs->local_file, true);
+ if (!fp && errno == EEXIST)
+ {
+ /* We cannot just invent a new name and use it (which is
+ what functions like unique_create typically do)
+ because we told the user we'd use this name.
+ Instead, return and retry the download. */
+ logprintf (LOG_NOTQUIET,
+ _("%s has sprung into existence.\n"),
+ hs->local_file);
+ CLOSE_INVALIDATE (sock);
+ xfree (head);
+ return FOPEN_EXCL_ERR;
+ }
+ }
if (!fp)
- {
- logprintf (LOG_NOTQUIET, "%s: %s\n", u->local, strerror (errno));
- CLOSE_INVALIDATE (sock); /* would be CLOSE_FINISH, but there
- might be more bytes in the body. */
- FREE_MAYBE (all_headers);
- return FOPENERR;
- }
- }
- else /* opt.dfp */
- {
- extern int global_download_count;
- fp = opt.dfp;
- /* To ensure that repeated "from scratch" downloads work for -O
- files, we rewind the file pointer, unless restval is
- non-zero. (This works only when -O is used on regular files,
- but it's still a valuable feature.)
-
- However, this loses when more than one URL is specified on
- the command line the second rewinds eradicates the contents
- of the first download. Thus we disable the above trick for
- all the downloads except the very first one.
-
- #### A possible solution to this would be to remember the
- file position in the output document and to seek to that
- position, instead of rewinding. */
- if (!hs->restval && global_download_count == 0)
- {
- /* This will silently fail for streams that don't correspond
- to regular files, but that's OK. */
- rewind (fp);
- /* ftruncate is needed because opt.dfp is opened in append
- mode if opt.always_rest is set. */
- ftruncate (fileno (fp), 0);
- clearerr (fp);
- }
- }
-
- /* #### This confuses the code that checks for file size. There
- should be some overhead information. */
- if (opt.save_headers)
- fwrite (all_headers, 1, all_length, fp);
- timer = wtimer_new ();
- /* Get the contents of the document. */
- hs->res = get_contents (sock, fp, &hs->len, hs->restval,
- (contlen != -1 ? contlen : 0),
- &rbuf, keep_alive);
- hs->dltime = wtimer_elapsed (timer);
- wtimer_delete (timer);
- {
- /* Close or flush the file. We have to be careful to check for
- error here. Checking the result of fwrite() is not enough --
- errors could go unnoticed! */
- int flush_res;
- if (!opt.dfp)
- flush_res = fclose (fp);
- else
- flush_res = fflush (fp);
- if (flush_res == EOF)
- hs->res = -2;
- }
- FREE_MAYBE (all_headers);
- CLOSE_FINISH (sock);
+ {
+ logprintf (LOG_NOTQUIET, "%s: %s\n", hs->local_file, strerror (errno));
+ CLOSE_INVALIDATE (sock);
+ xfree (head);
+ return FOPENERR;
+ }
+ }
+ else
+ fp = output_stream;
+
+ /* Print fetch message, if opt.verbose. */
+ if (opt.verbose)
+ {
+ logprintf (LOG_NOTQUIET, _("Saving to: %s\n"),
+ HYPHENP (hs->local_file) ? quote ("STDOUT") : quote (hs->local_file));
+ }
+
+ /* This confuses the timestamping code that checks for file size.
+ #### The timestamping code should be smarter about file size. */
+ if (opt.save_headers && hs->restval == 0)
+ fwrite (head, 1, strlen (head), fp);
+
+ /* Now we no longer need to store the response header. */
+ xfree (head);
+
+ /* Download the request body. */
+ flags = 0;
+ if (contlen != -1)
+ /* If content-length is present, read that much; otherwise, read
+ until EOF. The HTTP spec doesn't require the server to
+ actually close the connection when it's done sending data. */
+ flags |= rb_read_exactly;
+ if (hs->restval > 0 && contrange == 0)
+ /* If the server ignored our range request, instruct fd_read_body
+ to skip the first RESTVAL bytes of body. */
+ flags |= rb_skip_startpos;
+ hs->len = hs->restval;
+ hs->rd_size = 0;
+ hs->res = fd_read_body (sock, fp, contlen != -1 ? contlen : 0,
+ hs->restval, &hs->rd_size, &hs->len, &hs->dltime,
+ flags);
+
+ if (hs->res >= 0)
+ CLOSE_FINISH (sock);
+ else
+ {
+ if (hs->res < 0)
+ hs->rderrmsg = xstrdup (fd_errstr (sock));
+ CLOSE_INVALIDATE (sock);
+ }
+
+ if (!output_stream)
+ fclose (fp);
if (hs->res == -2)
return FWRITEERR;
return RETRFINISHED;
/* The genuine HTTP loop! This is the part where the retrieval is
retried, and retried, and retried, and... */
uerr_t
-http_loop (struct urlinfo *u, char **newloc, int *dt)
+http_loop (struct url *u, char **newloc, char **local_file, const char *referer,
+ int *dt, struct url *proxy, struct iri *iri)
{
int count;
- int use_ts, got_head = 0; /* time-stamping info */
- char *filename_plus_orig_suffix;
- char *local_filename = NULL;
- char *tms, *suf, *locf, *tmrate;
- uerr_t err;
- time_t tml = -1, tmr = -1; /* local and remote time-stamps */
- long local_size = 0; /* the size of the local file */
- size_t filename_len;
- struct http_stat hstat; /* HTTP status */
- struct stat st;
+ bool got_head = false; /* used for time-stamping and filename detection */
+ bool time_came_from_head = false;
+ bool got_name = false;
+ char *tms;
+ const char *tmrate;
+ uerr_t err, ret = TRYLIMEXC;
+ time_t tmr = -1; /* remote time-stamp */
+ struct http_stat hstat; /* HTTP status */
+ struct_stat st;
+ bool send_head_first = true;
+ char *file_name;
+
+ /* Assert that no value for *LOCAL_FILE was passed. */
+ assert (local_file == NULL || *local_file == NULL);
+
+ /* Set LOCAL_FILE parameter. */
+ if (local_file && opt.output_document)
+ *local_file = HYPHENP (opt.output_document) ? NULL : xstrdup (opt.output_document);
+
+ /* Reset NEWLOC parameter. */
+ *newloc = NULL;
/* This used to be done in main(), but it's a better idea to do it
here so that we don't go through the hoops if we're just using
FTP or whatever. */
- if (opt.cookies && opt.cookies_input && !cookies_loaded_p)
- {
- load_cookies (opt.cookies_input);
- cookies_loaded_p = 1;
- }
-
- *newloc = NULL;
+ if (opt.cookies)
+ load_cookies();
- /* Warn on (likely bogus) wildcard usage in HTTP. Don't use
- has_wildcards_p because it would also warn on `?', and we know that
- shows up in CGI paths a *lot*. */
- if (strchr (u->url, '*'))
+ /* Warn on (likely bogus) wildcard usage in HTTP. */
+ if (opt.ftp_glob && has_wildcards_p (u->path))
logputs (LOG_VERBOSE, _("Warning: wildcards not supported in HTTP.\n"));
- /* Determine the local filename. */
- if (!u->local)
- u->local = url_filename (u->proxy ? u->proxy : u);
-
- if (!opt.output_document)
- locf = u->local;
- else
- locf = opt.output_document;
+ /* Setup hstat struct. */
+ xzero (hstat);
+ hstat.referer = referer;
- /* Yuck. Multiple returns suck. We need to remember to free() the space we
- xmalloc() here before EACH return. This is one reason it's better to set
- flags that influence flow control and then return once at the end. */
- filename_len = strlen(u->local);
- filename_plus_orig_suffix = xmalloc(filename_len + sizeof(".orig"));
+ if (opt.output_document)
+ {
+ hstat.local_file = xstrdup (opt.output_document);
+ got_name = true;
+ }
+ else if (!opt.content_disposition)
+ {
+ hstat.local_file = url_file_name (u);
+ got_name = true;
+ }
- if (opt.noclobber && file_exists_p (u->local))
+ /* TODO: Ick! This code is now in both gethttp and http_loop, and is
+ * screaming for some refactoring. */
+ if (got_name && file_exists_p (hstat.local_file) && opt.noclobber && !opt.output_document)
{
/* If opt.noclobber is turned on and file already exists, do not
- retrieve the file */
+ retrieve the file. But if the output_document was given, then this
+ test was already done and the file didn't exist. Hence the !opt.output_document */
logprintf (LOG_VERBOSE, _("\
-File `%s' already there, will not retrieve.\n"), u->local);
+File %s already there; not retrieving.\n\n"),
+ quote (hstat.local_file));
/* If the file is there, we suppose it's retrieved OK. */
*dt |= RETROKF;
/* #### Bogusness alert. */
- /* If its suffix is "html" or (yuck!) "htm", we suppose it's
- text/html, a harmless lie. */
- if (((suf = suffix (u->local)) != NULL)
- && (!strcmp (suf, "html") || !strcmp (suf, "htm")))
- *dt |= TEXTHTML;
- xfree (suf);
- xfree (filename_plus_orig_suffix); /* must precede every return! */
- /* Another harmless lie: */
- return RETROK;
- }
+ /* If its suffix is "html" or "htm" or similar, assume text/html. */
+ if (has_html_suffix_p (hstat.local_file))
+ *dt |= TEXTHTML;
- use_ts = 0;
- if (opt.timestamping)
- {
- boolean local_dot_orig_file_exists = FALSE;
-
- if (opt.backup_converted)
- /* If -K is specified, we'll act on the assumption that it was specified
- last time these files were downloaded as well, and instead of just
- comparing local file X against server file X, we'll compare local
- file X.orig (if extant, else X) against server file X. If -K
- _wasn't_ specified last time, or the server contains files called
- *.orig, -N will be back to not operating correctly with -k. */
- {
- /* Would a single s[n]printf() call be faster? --dan
-
- Definitely not. sprintf() is horribly slow. It's a
- different question whether the difference between the two
- affects a program. Usually I'd say "no", but at one
- point I profiled Wget, and found that a measurable and
- non-negligible amount of time was lost calling sprintf()
- in url.c. Replacing sprintf with inline calls to
- strcpy() and long_to_string() made a difference.
- --hniksic */
- strcpy(filename_plus_orig_suffix, u->local);
- strcpy(filename_plus_orig_suffix + filename_len, ".orig");
-
- /* Try to stat() the .orig file. */
- if (stat(filename_plus_orig_suffix, &st) == 0)
- {
- local_dot_orig_file_exists = TRUE;
- local_filename = filename_plus_orig_suffix;
- }
- }
-
- if (!local_dot_orig_file_exists)
- /* Couldn't stat() <file>.orig, so try to stat() <file>. */
- if (stat (u->local, &st) == 0)
- local_filename = u->local;
+ ret = RETROK;
+ goto exit;
+ }
- if (local_filename != NULL)
- /* There was a local file, so we'll check later to see if the version
- the server has is the same version we already have, allowing us to
- skip a download. */
- {
- use_ts = 1;
- tml = st.st_mtime;
- local_size = st.st_size;
- got_head = 0;
- }
- }
- /* Reset the counter. */
+ /* Reset the counter. */
count = 0;
- *dt = 0 | ACCEPTRANGES;
+
+ /* Reset the document type. */
+ *dt = 0;
+
+ /* Skip preliminary HEAD request if we're not in spider mode AND
+ * if -O was given or HTTP Content-Disposition support is disabled. */
+ if (!opt.spider
+ && (got_name || !opt.content_disposition))
+ send_head_first = false;
+
+ /* Send preliminary HEAD request if -N is given and we have an existing
+ * destination file. */
+ file_name = url_file_name (u);
+ if (opt.timestamping
+ && !opt.content_disposition
+ && file_exists_p (file_name))
+ send_head_first = true;
+ xfree (file_name);
+
/* THE loop */
do
{
/* Increment the pass counter. */
++count;
sleep_between_retrievals (count);
+
/* Get the current time string. */
- tms = time_str (NULL);
+ tms = datetime_str (time (NULL));
+
+ if (opt.spider && !got_head)
+ logprintf (LOG_VERBOSE, _("\
+Spider mode enabled. Check if remote file exists.\n"));
+
/* Print fetch message, if opt.verbose. */
if (opt.verbose)
- {
- char *hurl = str_url (u->proxy ? u->proxy : u, 1);
- char tmp[15];
- strcpy (tmp, " ");
- if (count > 1)
- sprintf (tmp, _("(try:%2d)"), count);
- logprintf (LOG_VERBOSE, "--%s-- %s\n %s => `%s'\n",
- tms, hurl, tmp, locf);
+ {
+ char *hurl = url_string (u, URL_AUTH_HIDE_PASSWD);
+
+ if (count > 1)
+ {
+ char tmp[256];
+ sprintf (tmp, _("(try:%2d)"), count);
+ logprintf (LOG_NOTQUIET, "--%s-- %s %s\n",
+ tms, tmp, hurl);
+ }
+ else
+ {
+ logprintf (LOG_NOTQUIET, "--%s-- %s\n",
+ tms, hurl);
+ }
+
#ifdef WINDOWS
- ws_changetitle (hurl, 1);
+ ws_changetitle (hurl);
#endif
- xfree (hurl);
- }
+ xfree (hurl);
+ }
/* Default document type is empty. However, if spider mode is
- on or time-stamping is employed, HEAD_ONLY commands is
- encoded within *dt. */
- if (opt.spider || (use_ts && !got_head))
- *dt |= HEAD_ONLY;
+ on or time-stamping is employed, HEAD_ONLY commands is
+ encoded within *dt. */
+ if (send_head_first && !got_head)
+ *dt |= HEAD_ONLY;
else
- *dt &= ~HEAD_ONLY;
- /* Assume no restarting. */
- hstat.restval = 0L;
- /* Decide whether or not to restart. */
- if (((count > 1 && (*dt & ACCEPTRANGES)) || opt.always_rest)
- && file_exists_p (locf))
- if (stat (locf, &st) == 0 && S_ISREG (st.st_mode))
- hstat.restval = st.st_size;
+ *dt &= ~HEAD_ONLY;
- /* Decide whether to send the no-cache directive. We send it in
- two cases:
- a) we're using a proxy, and we're past our first retrieval.
- Some proxies are notorious for caching incomplete data, so
- we require a fresh get.
- b) caching is explicitly inhibited. */
- if ((u->proxy && count > 1) /* a */
- || !opt.allow_cache /* b */
- )
- *dt |= SEND_NOCACHE;
+ /* Decide whether or not to restart. */
+ if (opt.always_rest
+ && got_name
+ && stat (hstat.local_file, &st) == 0
+ && S_ISREG (st.st_mode))
+ /* When -c is used, continue from on-disk size. (Can't use
+ hstat.len even if count>1 because we don't want a failed
+ first attempt to clobber existing data.) */
+ hstat.restval = st.st_size;
+ else if (count > 1)
+ /* otherwise, continue where the previous try left off */
+ hstat.restval = hstat.len;
else
- *dt &= ~SEND_NOCACHE;
+ hstat.restval = 0;
- /* Try fetching the document, or at least its head. :-) */
- err = gethttp (u, &hstat, dt);
-
- /* It's unfortunate that wget determines the local filename before finding
- out the Content-Type of the file. Barring a major restructuring of the
- code, we need to re-set locf here, since gethttp() may have xrealloc()d
- u->local to tack on ".html". */
- if (!opt.output_document)
- locf = u->local;
+ /* Decide whether to send the no-cache directive. We send it in
+ two cases:
+ a) we're using a proxy, and we're past our first retrieval.
+ Some proxies are notorious for caching incomplete data, so
+ we require a fresh get.
+ b) caching is explicitly inhibited. */
+ if ((proxy && count > 1) /* a */
+ || !opt.allow_cache) /* b */
+ *dt |= SEND_NOCACHE;
else
- locf = opt.output_document;
+ *dt &= ~SEND_NOCACHE;
- /* In `-c' is used, check whether the file we're writing to
- exists before we've done anything. If so, we'll refuse to
- truncate it if the server doesn't support continued
- downloads. */
- if (opt.always_rest)
- hstat.no_truncate = file_exists_p (locf);
+ /* Try fetching the document, or at least its head. */
+ err = gethttp (u, &hstat, dt, proxy, iri);
/* Time? */
- tms = time_str (NULL);
+ tms = datetime_str (time (NULL));
+
/* Get the new location (with or without the redirection). */
if (hstat.newloc)
- *newloc = xstrdup (hstat.newloc);
+ *newloc = xstrdup (hstat.newloc);
+
switch (err)
- {
- case HERR: case HEOF: case CONSOCKERR: case CONCLOSED:
- case CONERROR: case READERR: case WRITEFAILED:
- case RANGEERR:
- /* Non-fatal errors continue executing the loop, which will
- bring them to "while" statement at the end, to judge
- whether the number of tries was exceeded. */
- FREEHSTAT (hstat);
- printwhat (count, opt.ntry);
- continue;
- break;
- case HOSTERR: case CONREFUSED: case PROXERR: case AUTHFAILED:
- case SSLERRCTXCREATE: case CONTNOTSUPPORTED:
- /* Fatal errors just return from the function. */
- FREEHSTAT (hstat);
- xfree (filename_plus_orig_suffix); /* must precede every return! */
- return err;
- break;
- case FWRITEERR: case FOPENERR:
- /* Another fatal error. */
- logputs (LOG_VERBOSE, "\n");
- logprintf (LOG_NOTQUIET, _("Cannot write to `%s' (%s).\n"),
- u->local, strerror (errno));
- FREEHSTAT (hstat);
- return err;
- break;
- case CONSSLERR:
- /* Another fatal error. */
- logputs (LOG_VERBOSE, "\n");
- logprintf (LOG_NOTQUIET, _("Unable to establish SSL connection.\n"));
- FREEHSTAT (hstat);
- xfree (filename_plus_orig_suffix); /* must precede every return! */
- return err;
- break;
- case NEWLOCATION:
- /* Return the new location to the caller. */
- if (!hstat.newloc)
- {
- logprintf (LOG_NOTQUIET,
- _("ERROR: Redirection (%d) without location.\n"),
- hstat.statcode);
- xfree (filename_plus_orig_suffix); /* must precede every return! */
- return WRONGCODE;
- }
- FREEHSTAT (hstat);
- xfree (filename_plus_orig_suffix); /* must precede every return! */
- return NEWLOCATION;
- break;
- case RETRFINISHED:
- /* Deal with you later. */
- break;
- default:
- /* All possibilities should have been exhausted. */
- abort ();
- }
+ {
+ case HERR: case HEOF: case CONSOCKERR: case CONCLOSED:
+ case CONERROR: case READERR: case WRITEFAILED:
+ case RANGEERR: case FOPEN_EXCL_ERR:
+ /* Non-fatal errors continue executing the loop, which will
+ bring them to "while" statement at the end, to judge
+ whether the number of tries was exceeded. */
+ printwhat (count, opt.ntry);
+ continue;
+ case FWRITEERR: case FOPENERR:
+ /* Another fatal error. */
+ logputs (LOG_VERBOSE, "\n");
+ logprintf (LOG_NOTQUIET, _("Cannot write to %s (%s).\n"),
+ quote (hstat.local_file), strerror (errno));
+ case HOSTERR: case CONIMPOSSIBLE: case PROXERR: case AUTHFAILED:
+ case SSLINITFAILED: case CONTNOTSUPPORTED:
+ /* Fatal errors just return from the function. */
+ ret = err;
+ goto exit;
+ case CONSSLERR:
+ /* Another fatal error. */
+ logprintf (LOG_NOTQUIET, _("Unable to establish SSL connection.\n"));
+ ret = err;
+ goto exit;
+ case NEWLOCATION:
+ /* Return the new location to the caller. */
+ if (!*newloc)
+ {
+ logprintf (LOG_NOTQUIET,
+ _("ERROR: Redirection (%d) without location.\n"),
+ hstat.statcode);
+ ret = WRONGCODE;
+ }
+ else
+ {
+ ret = NEWLOCATION;
+ }
+ goto exit;
+ case RETRUNNEEDED:
+ /* The file was already fully retrieved. */
+ ret = RETROK;
+ goto exit;
+ case RETRFINISHED:
+ /* Deal with you later. */
+ break;
+ default:
+ /* All possibilities should have been exhausted. */
+ abort ();
+ }
+
if (!(*dt & RETROKF))
- {
- if (!opt.verbose)
- {
- /* #### Ugly ugly ugly! */
- char *hurl = str_url (u->proxy ? u->proxy : u, 1);
- logprintf (LOG_NONVERBOSE, "%s:\n", hurl);
- xfree (hurl);
- }
- logprintf (LOG_NOTQUIET, _("%s ERROR %d: %s.\n"),
- tms, hstat.statcode, hstat.error);
- logputs (LOG_VERBOSE, "\n");
- FREEHSTAT (hstat);
- xfree (filename_plus_orig_suffix); /* must precede every return! */
- return WRONGCODE;
- }
-
- /* Did we get the time-stamp? */
+ {
+ char *hurl = NULL;
+ if (!opt.verbose)
+ {
+ /* #### Ugly ugly ugly! */
+ hurl = url_string (u, URL_AUTH_HIDE_PASSWD);
+ logprintf (LOG_NONVERBOSE, "%s:\n", hurl);
+ }
+
+ /* Fall back to GET if HEAD fails with a 500 or 501 error code. */
+ if (*dt & HEAD_ONLY
+ && (hstat.statcode == 500 || hstat.statcode == 501))
+ {
+ got_head = true;
+ continue;
+ }
+ /* Maybe we should always keep track of broken links, not just in
+ * spider mode.
+ * Don't log error if it was UTF-8 encoded because we will try
+ * once unencoded. */
+ else if (opt.spider && !iri->utf8_encode)
+ {
+ /* #### Again: ugly ugly ugly! */
+ if (!hurl)
+ hurl = url_string (u, URL_AUTH_HIDE_PASSWD);
+ nonexisting_url (hurl);
+ logprintf (LOG_NOTQUIET, _("\
+Remote file does not exist -- broken link!!!\n"));
+ }
+ else
+ {
+ logprintf (LOG_NOTQUIET, _("%s ERROR %d: %s.\n"),
+ tms, hstat.statcode,
+ quotearg_style (escape_quoting_style, hstat.error));
+ }
+ logputs (LOG_VERBOSE, "\n");
+ ret = WRONGCODE;
+ xfree_null (hurl);
+ goto exit;
+ }
+
+ /* Did we get the time-stamp? */
if (!got_head)
- {
- if (opt.timestamping && !hstat.remote_time)
- {
- logputs (LOG_NOTQUIET, _("\
+ {
+ got_head = true; /* no more time-stamping */
+
+ if (opt.timestamping && !hstat.remote_time)
+ {
+ logputs (LOG_NOTQUIET, _("\
Last-modified header missing -- time-stamps turned off.\n"));
- }
- else if (hstat.remote_time)
- {
- /* Convert the date-string into struct tm. */
- tmr = http_atotm (hstat.remote_time);
- if (tmr == (time_t) (-1))
- logputs (LOG_VERBOSE, _("\
+ }
+ else if (hstat.remote_time)
+ {
+ /* Convert the date-string into struct tm. */
+ tmr = http_atotm (hstat.remote_time);
+ if (tmr == (time_t) (-1))
+ logputs (LOG_VERBOSE, _("\
Last-modified header invalid -- time-stamp ignored.\n"));
- }
- }
-
- /* The time-stamping section. */
- if (use_ts)
- {
- got_head = 1;
- *dt &= ~HEAD_ONLY;
- use_ts = 0; /* no more time-stamping */
- count = 0; /* the retrieve count for HEAD is
- reset */
- if (hstat.remote_time && tmr != (time_t) (-1))
- {
- /* Now time-stamping can be used validly. Time-stamping
- means that if the sizes of the local and remote file
- match, and local file is newer than the remote file,
- it will not be retrieved. Otherwise, the normal
- download procedure is resumed. */
- if (tml >= tmr &&
- (hstat.contlen == -1 || local_size == hstat.contlen))
- {
- logprintf (LOG_VERBOSE, _("\
-Server file no newer than local file `%s' -- not retrieving.\n\n"),
- local_filename);
- FREEHSTAT (hstat);
- xfree (filename_plus_orig_suffix); /*must precede every return!*/
- return RETROK;
- }
- else if (tml >= tmr)
- logprintf (LOG_VERBOSE, _("\
-The sizes do not match (local %ld) -- retrieving.\n"), local_size);
- else
- logputs (LOG_VERBOSE,
- _("Remote file is newer, retrieving.\n"));
- }
- FREEHSTAT (hstat);
- continue;
- }
+ if (*dt & HEAD_ONLY)
+ time_came_from_head = true;
+ }
+
+ if (send_head_first)
+ {
+ /* The time-stamping section. */
+ if (opt.timestamping)
+ {
+ if (hstat.orig_file_name) /* Perform the following
+ checks only if the file
+ we're supposed to
+ download already exists. */
+ {
+ if (hstat.remote_time &&
+ tmr != (time_t) (-1))
+ {
+ /* Now time-stamping can be used validly.
+ Time-stamping means that if the sizes of
+ the local and remote file match, and local
+ file is newer than the remote file, it will
+ not be retrieved. Otherwise, the normal
+ download procedure is resumed. */
+ if (hstat.orig_file_tstamp >= tmr)
+ {
+ if (hstat.contlen == -1
+ || hstat.orig_file_size == hstat.contlen)
+ {
+ logprintf (LOG_VERBOSE, _("\
+Server file no newer than local file %s -- not retrieving.\n\n"),
+ quote (hstat.orig_file_name));
+ ret = RETROK;
+ goto exit;
+ }
+ else
+ {
+ logprintf (LOG_VERBOSE, _("\
+The sizes do not match (local %s) -- retrieving.\n"),
+ number_to_static_string (hstat.orig_file_size));
+ }
+ }
+ else
+ logputs (LOG_VERBOSE,
+ _("Remote file is newer, retrieving.\n"));
+
+ logputs (LOG_VERBOSE, "\n");
+ }
+ }
+
+ /* free_hstat (&hstat); */
+ hstat.timestamp_checked = true;
+ }
+
+ if (opt.spider)
+ {
+ bool finished = true;
+ if (opt.recursive)
+ {
+ if (*dt & TEXTHTML)
+ {
+ logputs (LOG_VERBOSE, _("\
+Remote file exists and could contain links to other resources -- retrieving.\n\n"));
+ finished = false;
+ }
+ else
+ {
+ logprintf (LOG_VERBOSE, _("\
+Remote file exists but does not contain any link -- not retrieving.\n\n"));
+ ret = RETROK; /* RETRUNNEEDED is not for caller. */
+ }
+ }
+ else
+ {
+ if (*dt & TEXTHTML)
+ {
+ logprintf (LOG_VERBOSE, _("\
+Remote file exists and could contain further links,\n\
+but recursion is disabled -- not retrieving.\n\n"));
+ }
+ else
+ {
+ logprintf (LOG_VERBOSE, _("\
+Remote file exists.\n\n"));
+ }
+ ret = RETROK; /* RETRUNNEEDED is not for caller. */
+ }
+
+ if (finished)
+ {
+ logprintf (LOG_NONVERBOSE,
+ _("%s URL: %s %2d %s\n"),
+ tms, u->url, hstat.statcode,
+ hstat.message ? quotearg_style (escape_quoting_style, hstat.message) : "");
+ goto exit;
+ }
+ }
+
+ got_name = true;
+ *dt &= ~HEAD_ONLY;
+ count = 0; /* the retrieve count for HEAD is reset */
+ continue;
+ } /* send_head_first */
+ } /* !got_head */
+
if ((tmr != (time_t) (-1))
- && !opt.spider
- && ((hstat.len == hstat.contlen) ||
- ((hstat.res == 0) &&
- ((hstat.contlen == -1) ||
- (hstat.len >= hstat.contlen && !opt.kill_longer)))))
- {
- /* #### This code repeats in http.c and ftp.c. Move it to a
- function! */
- const char *fl = NULL;
- if (opt.output_document)
- {
- if (opt.od_known_regular)
- fl = opt.output_document;
- }
- else
- fl = u->local;
- if (fl)
- touch (fl, tmr);
- }
- /* End of time-stamping section. */
-
- if (opt.spider)
- {
- logprintf (LOG_NOTQUIET, "%d %s\n\n", hstat.statcode, hstat.error);
- xfree (filename_plus_orig_suffix); /* must precede every return! */
- return RETROK;
- }
-
- /* It is now safe to free the remainder of hstat, since the
- strings within it will no longer be used. */
- FREEHSTAT (hstat);
-
- tmrate = rate (hstat.len - hstat.restval, hstat.dltime, 0);
+ && ((hstat.len == hstat.contlen) ||
+ ((hstat.res == 0) && (hstat.contlen == -1))))
+ {
+ const char *fl = NULL;
+ set_local_file (&fl, hstat.local_file);
+ if (fl)
+ {
+ time_t newtmr = -1;
+ /* Reparse time header, in case it's changed. */
+ if (time_came_from_head
+ && hstat.remote_time && hstat.remote_time[0])
+ {
+ newtmr = http_atotm (hstat.remote_time);
+ if (newtmr != (time_t)-1)
+ tmr = newtmr;
+ }
+ touch (fl, tmr);
+ }
+ }
+ /* End of time-stamping section. */
+
+ tmrate = retr_rate (hstat.rd_size, hstat.dltime);
+ total_download_time += hstat.dltime;
if (hstat.len == hstat.contlen)
- {
- if (*dt & RETROKF)
- {
- logprintf (LOG_VERBOSE,
- _("%s (%s) - `%s' saved [%ld/%ld]\n\n"),
- tms, tmrate, locf, hstat.len, hstat.contlen);
- logprintf (LOG_NONVERBOSE,
- "%s URL:%s [%ld/%ld] -> \"%s\" [%d]\n",
- tms, u->url, hstat.len, hstat.contlen, locf, count);
- }
- ++opt.numurls;
- downloaded_increase (hstat.len);
-
- /* Remember that we downloaded the file for later ".orig" code. */
- if (*dt & ADDED_HTML_EXTENSION)
- downloaded_file(FILE_DOWNLOADED_AND_HTML_EXTENSION_ADDED, locf);
- else
- downloaded_file(FILE_DOWNLOADED_NORMALLY, locf);
-
- xfree(filename_plus_orig_suffix); /* must precede every return! */
- return RETROK;
- }
+ {
+ if (*dt & RETROKF)
+ {
+ bool write_to_stdout = (opt.output_document && HYPHENP (opt.output_document));
+
+ logprintf (LOG_VERBOSE,
+ write_to_stdout
+ ? _("%s (%s) - written to stdout %s[%s/%s]\n\n")
+ : _("%s (%s) - %s saved [%s/%s]\n\n"),
+ tms, tmrate,
+ write_to_stdout ? "" : quote (hstat.local_file),
+ number_to_static_string (hstat.len),
+ number_to_static_string (hstat.contlen));
+ logprintf (LOG_NONVERBOSE,
+ "%s URL:%s [%s/%s] -> \"%s\" [%d]\n",
+ tms, u->url,
+ number_to_static_string (hstat.len),
+ number_to_static_string (hstat.contlen),
+ hstat.local_file, count);
+ }
+ ++numurls;
+ total_downloaded_bytes += hstat.len;
+
+ /* Remember that we downloaded the file for later ".orig" code. */
+ if (*dt & ADDED_HTML_EXTENSION)
+ downloaded_file(FILE_DOWNLOADED_AND_HTML_EXTENSION_ADDED, hstat.local_file);
+ else
+ downloaded_file(FILE_DOWNLOADED_NORMALLY, hstat.local_file);
+
+ ret = RETROK;
+ goto exit;
+ }
else if (hstat.res == 0) /* No read error */
- {
- if (hstat.contlen == -1) /* We don't know how much we were supposed
- to get, so assume we succeeded. */
- {
- if (*dt & RETROKF)
- {
- logprintf (LOG_VERBOSE,
- _("%s (%s) - `%s' saved [%ld]\n\n"),
- tms, tmrate, locf, hstat.len);
- logprintf (LOG_NONVERBOSE,
- "%s URL:%s [%ld] -> \"%s\" [%d]\n",
- tms, u->url, hstat.len, locf, count);
- }
- ++opt.numurls;
- downloaded_increase (hstat.len);
-
- /* Remember that we downloaded the file for later ".orig" code. */
- if (*dt & ADDED_HTML_EXTENSION)
- downloaded_file(FILE_DOWNLOADED_AND_HTML_EXTENSION_ADDED, locf);
- else
- downloaded_file(FILE_DOWNLOADED_NORMALLY, locf);
-
- xfree (filename_plus_orig_suffix); /* must precede every return! */
- return RETROK;
- }
- else if (hstat.len < hstat.contlen) /* meaning we lost the
- connection too soon */
- {
- logprintf (LOG_VERBOSE,
- _("%s (%s) - Connection closed at byte %ld. "),
- tms, tmrate, hstat.len);
- printwhat (count, opt.ntry);
- continue;
- }
- else if (!opt.kill_longer) /* meaning we got more than expected */
- {
- logprintf (LOG_VERBOSE,
- _("%s (%s) - `%s' saved [%ld/%ld])\n\n"),
- tms, tmrate, locf, hstat.len, hstat.contlen);
- logprintf (LOG_NONVERBOSE,
- "%s URL:%s [%ld/%ld] -> \"%s\" [%d]\n",
- tms, u->url, hstat.len, hstat.contlen, locf, count);
- ++opt.numurls;
- downloaded_increase (hstat.len);
-
- /* Remember that we downloaded the file for later ".orig" code. */
- if (*dt & ADDED_HTML_EXTENSION)
- downloaded_file(FILE_DOWNLOADED_AND_HTML_EXTENSION_ADDED, locf);
- else
- downloaded_file(FILE_DOWNLOADED_NORMALLY, locf);
-
- xfree (filename_plus_orig_suffix); /* must precede every return! */
- return RETROK;
- }
- else /* the same, but not accepted */
- {
- logprintf (LOG_VERBOSE,
- _("%s (%s) - Connection closed at byte %ld/%ld. "),
- tms, tmrate, hstat.len, hstat.contlen);
- printwhat (count, opt.ntry);
- continue;
- }
- }
- else /* now hstat.res can only be -1 */
- {
- if (hstat.contlen == -1)
- {
- logprintf (LOG_VERBOSE,
- _("%s (%s) - Read error at byte %ld (%s)."),
- tms, tmrate, hstat.len, strerror (errno));
- printwhat (count, opt.ntry);
- continue;
- }
- else /* hstat.res == -1 and contlen is given */
- {
- logprintf (LOG_VERBOSE,
- _("%s (%s) - Read error at byte %ld/%ld (%s). "),
- tms, tmrate, hstat.len, hstat.contlen,
- strerror (errno));
- printwhat (count, opt.ntry);
- continue;
- }
- }
+ {
+ if (hstat.contlen == -1) /* We don't know how much we were supposed
+ to get, so assume we succeeded. */
+ {
+ if (*dt & RETROKF)
+ {
+ bool write_to_stdout = (opt.output_document && HYPHENP (opt.output_document));
+
+ logprintf (LOG_VERBOSE,
+ write_to_stdout
+ ? _("%s (%s) - written to stdout %s[%s]\n\n")
+ : _("%s (%s) - %s saved [%s]\n\n"),
+ tms, tmrate,
+ write_to_stdout ? "" : quote (hstat.local_file),
+ number_to_static_string (hstat.len));
+ logprintf (LOG_NONVERBOSE,
+ "%s URL:%s [%s] -> \"%s\" [%d]\n",
+ tms, u->url, number_to_static_string (hstat.len),
+ hstat.local_file, count);
+ }
+ ++numurls;
+ total_downloaded_bytes += hstat.len;
+
+ /* Remember that we downloaded the file for later ".orig" code. */
+ if (*dt & ADDED_HTML_EXTENSION)
+ downloaded_file(FILE_DOWNLOADED_AND_HTML_EXTENSION_ADDED, hstat.local_file);
+ else
+ downloaded_file(FILE_DOWNLOADED_NORMALLY, hstat.local_file);
+
+ ret = RETROK;
+ goto exit;
+ }
+ else if (hstat.len < hstat.contlen) /* meaning we lost the
+ connection too soon */
+ {
+ logprintf (LOG_VERBOSE,
+ _("%s (%s) - Connection closed at byte %s. "),
+ tms, tmrate, number_to_static_string (hstat.len));
+ printwhat (count, opt.ntry);
+ continue;
+ }
+ else if (hstat.len != hstat.restval)
+ /* Getting here would mean reading more data than
+ requested with content-length, which we never do. */
+ abort ();
+ else
+ {
+ /* Getting here probably means that the content-length was
+ * _less_ than the original, local size. We should probably
+ * truncate or re-read, or something. FIXME */
+ ret = RETROK;
+ goto exit;
+ }
+ }
+ else /* from now on hstat.res can only be -1 */
+ {
+ if (hstat.contlen == -1)
+ {
+ logprintf (LOG_VERBOSE,
+ _("%s (%s) - Read error at byte %s (%s)."),
+ tms, tmrate, number_to_static_string (hstat.len),
+ hstat.rderrmsg);
+ printwhat (count, opt.ntry);
+ continue;
+ }
+ else /* hstat.res == -1 and contlen is given */
+ {
+ logprintf (LOG_VERBOSE,
+ _("%s (%s) - Read error at byte %s/%s (%s). "),
+ tms, tmrate,
+ number_to_static_string (hstat.len),
+ number_to_static_string (hstat.contlen),
+ hstat.rderrmsg);
+ printwhat (count, opt.ntry);
+ continue;
+ }
+ }
/* not reached */
- break;
}
while (!opt.ntry || (count < opt.ntry));
- xfree (filename_plus_orig_suffix); /* must precede every return! */
- return TRYLIMEXC;
+
+exit:
+ if (ret == RETROK)
+ *local_file = xstrdup (hstat.local_file);
+ free_hstat (&hstat);
+
+ return ret;
}
\f
-/* Converts struct tm to time_t, assuming the data in tm is UTC rather
- than local timezone.
-
- mktime is similar but assumes struct tm, also known as the
- "broken-down" form of time, is in local time zone. mktime_from_utc
- uses mktime to make the conversion understanding that an offset
- will be introduced by the local time assumption.
-
- mktime_from_utc then measures the introduced offset by applying
- gmtime to the initial result and applying mktime to the resulting
- "broken-down" form. The difference between the two mktime results
- is the measured offset which is then subtracted from the initial
- mktime result to yield a calendar time which is the value returned.
-
- tm_isdst in struct tm is set to 0 to force mktime to introduce a
- consistent offset (the non DST offset) since tm and tm+o might be
- on opposite sides of a DST change.
-
- Some implementations of mktime return -1 for the nonexistent
- localtime hour at the beginning of DST. In this event, use
- mktime(tm - 1hr) + 3600.
-
- Schematically
- mktime(tm) --> t+o
- gmtime(t+o) --> tm+o
- mktime(tm+o) --> t+2o
- t+o - (t+2o - t+o) = t
-
- Note that glibc contains a function of the same purpose named
- `timegm' (reverse of gmtime). But obviously, it is not universally
- available, and unfortunately it is not straightforwardly
- extractable for use here. Perhaps configure should detect timegm
- and use it where available.
-
- Contributed by Roger Beeman <beeman@cisco.com>, with the help of
- Mark Baushke <mdb@cisco.com> and the rest of the Gurus at CISCO.
- Further improved by Roger with assistance from Edward J. Sabol
- based on input by Jamie Zawinski. */
-
-static time_t
-mktime_from_utc (struct tm *t)
-{
- time_t tl, tb;
- struct tm *tg;
-
- tl = mktime (t);
- if (tl == -1)
- {
- t->tm_hour--;
- tl = mktime (t);
- if (tl == -1)
- return -1; /* can't deal with output from strptime */
- tl += 3600;
- }
- tg = gmtime (&tl);
- tg->tm_isdst = 0;
- tb = mktime (tg);
- if (tb == -1)
- {
- tg->tm_hour--;
- tb = mktime (tg);
- if (tb == -1)
- return -1; /* can't deal with output from gmtime */
- tb += 3600;
- }
- return (tl - (tb - tl));
-}
-
/* Check whether the result of strptime() indicates success.
strptime() returns the pointer to how far it got to in the string.
The processing has been successful if the string is at `GMT' or
In extended regexp parlance, the function returns 1 if P matches
"^ *(GMT|[+-][0-9]|$)", 0 otherwise. P being NULL (which strptime
can return) is considered a failure and 0 is returned. */
-static int
+static bool
check_end (const char *p)
{
if (!p)
- return 0;
- while (ISSPACE (*p))
+ return false;
+ while (c_isspace (*p))
++p;
if (!*p
|| (p[0] == 'G' && p[1] == 'M' && p[2] == 'T')
- || ((p[0] == '+' || p[0] == '-') && ISDIGIT (p[1])))
- return 1;
+ || ((p[0] == '+' || p[0] == '-') && c_isdigit (p[1])))
+ return true;
else
- return 0;
+ return false;
}
/* Convert the textual specification of time in TIME_STRING to the
number of seconds since the Epoch.
- TIME_STRING can be in any of the three formats RFC2068 allows the
- HTTP servers to emit -- RFC1123-date, RFC850-date or asctime-date.
+ TIME_STRING can be in any of the three formats RFC2616 allows the
+ HTTP servers to emit -- RFC1123-date, RFC850-date or asctime-date,
+ as well as the time format used in the Set-Cookie header.
Timezones are ignored, and should be GMT.
Return the computed time_t representation, or -1 if the conversion
it is not assigned to the FSF. So I stuck it with strptime. */
time_t
-http_atotm (char *time_string)
+http_atotm (const char *time_string)
{
/* NOTE: Solaris strptime man page claims that %n and %t match white
space, but that's not universally available. Instead, we simply
implementations I've tested. */
static const char *time_formats[] = {
- "%a, %d %b %Y %T", /* RFC1123: Thu, 29 Jan 1998 22:12:57 */
- "%A, %d-%b-%y %T", /* RFC850: Thursday, 29-Jan-98 22:12:57 */
- "%a, %d-%b-%Y %T", /* pseudo-RFC850: Thu, 29-Jan-1998 22:12:57
- (google.com uses this for their cookies.) */
- "%a %b %d %T %Y" /* asctime: Thu Jan 29 22:12:57 1998 */
+ "%a, %d %b %Y %T", /* rfc1123: Thu, 29 Jan 1998 22:12:57 */
+ "%A, %d-%b-%y %T", /* rfc850: Thursday, 29-Jan-98 22:12:57 */
+ "%a %b %d %T %Y", /* asctime: Thu Jan 29 22:12:57 1998 */
+ "%a, %d-%b-%Y %T" /* cookies: Thu, 29-Jan-1998 22:12:57
+ (used in Set-Cookie, defined in the
+ Netscape cookie specification.) */
};
+ const char *oldlocale;
+ char savedlocale[256];
+ size_t i;
+ time_t ret = (time_t) -1;
+
+ /* Solaris strptime fails to recognize English month names in
+ non-English locales, which we work around by temporarily setting
+ locale to C before invoking strptime. */
+ oldlocale = setlocale (LC_TIME, NULL);
+ if (oldlocale)
+ {
+ size_t l = strlen (oldlocale);
+ if (l >= sizeof savedlocale)
+ savedlocale[0] = '\0';
+ else
+ memcpy (savedlocale, oldlocale, l);
+ }
+ else savedlocale[0] = '\0';
- int i;
- struct tm t;
-
- /* According to Roger Beeman, we need to initialize tm_isdst, since
- strptime won't do it. */
- t.tm_isdst = 0;
-
- /* Note that under foreign locales Solaris strptime() fails to
- recognize English dates, which renders this function useless. We
- solve this by being careful not to affect LC_TIME when
- initializing locale.
-
- Another solution would be to temporarily set locale to C, invoke
- strptime(), and restore it back. This is slow and dirty,
- however, and locale support other than LC_MESSAGES can mess other
- things, so I rather chose to stick with just setting LC_MESSAGES.
+ setlocale (LC_TIME, "C");
- GNU strptime does not have this problem because it recognizes
- both international and local dates. */
+ for (i = 0; i < countof (time_formats); i++)
+ {
+ struct tm t;
+
+ /* Some versions of strptime use the existing contents of struct
+ tm to recalculate the date according to format. Zero it out
+ to prevent stack garbage from influencing strptime. */
+ xzero (t);
+
+ if (check_end (strptime (time_string, time_formats[i], &t)))
+ {
+ ret = timegm (&t);
+ break;
+ }
+ }
- for (i = 0; i < ARRAY_SIZE (time_formats); i++)
- if (check_end (strptime (time_string, time_formats[i], &t)))
- return mktime_from_utc (&t);
+ /* Restore the previous locale. */
+ if (savedlocale[0])
+ setlocale (LC_TIME, savedlocale);
- /* All formats have failed. */
- return -1;
+ return ret;
}
\f
-/* Authorization support: We support two authorization schemes:
+/* Authorization support: We support three authorization schemes:
* `Basic' scheme, consisting of base64-ing USER:PASSWORD string;
* `Digest' scheme, added by Junio Hamano <junio@twinsun.com>,
consisting of answering to the server's challenge with the proper
- MD5 digests. */
-
-/* How many bytes it will take to store LEN bytes in base64. */
-#define BASE64_LENGTH(len) (4 * (((len) + 2) / 3))
+ MD5 digests.
-/* Encode the string S of length LENGTH to base64 format and place it
- to STORE. STORE will be 0-terminated, and must point to a writable
- buffer of at least 1+BASE64_LENGTH(length) bytes. */
-static void
-base64_encode (const char *s, char *store, int length)
-{
- /* Conversion table. */
- static char tbl[64] = {
- 'A','B','C','D','E','F','G','H',
- 'I','J','K','L','M','N','O','P',
- 'Q','R','S','T','U','V','W','X',
- 'Y','Z','a','b','c','d','e','f',
- 'g','h','i','j','k','l','m','n',
- 'o','p','q','r','s','t','u','v',
- 'w','x','y','z','0','1','2','3',
- '4','5','6','7','8','9','+','/'
- };
- int i;
- unsigned char *p = (unsigned char *)store;
-
- /* Transform the 3x8 bits to 4x6 bits, as required by base64. */
- for (i = 0; i < length; i += 3)
- {
- *p++ = tbl[s[0] >> 2];
- *p++ = tbl[((s[0] & 3) << 4) + (s[1] >> 4)];
- *p++ = tbl[((s[1] & 0xf) << 2) + (s[2] >> 6)];
- *p++ = tbl[s[2] & 0x3f];
- s += 3;
- }
- /* Pad the result if necessary... */
- if (i == length + 1)
- *(p - 1) = '=';
- else if (i == length + 2)
- *(p - 1) = *(p - 2) = '=';
- /* ...and zero-terminate it. */
- *p = '\0';
-}
+ * `NTLM' ("NT Lan Manager") scheme, based on code written by Daniel
+ Stenberg for libcurl. Like digest, NTLM is based on a
+ challenge-response mechanism, but unlike digest, it is non-standard
+ (authenticates TCP connections rather than requests), undocumented
+ and Microsoft-specific. */
/* Create the authentication header contents for the `Basic' scheme.
- This is done by encoding the string `USER:PASS' in base64 and
- prepending `HEADER: Basic ' to it. */
+ This is done by encoding the string "USER:PASS" to base64 and
+ prepending the string "Basic " in front of it. */
+
static char *
-basic_authentication_encode (const char *user, const char *passwd,
- const char *header)
+basic_authentication_encode (const char *user, const char *passwd)
{
- char *t1, *t2, *res;
+ char *t1, *t2;
int len1 = strlen (user) + 1 + strlen (passwd);
- int len2 = BASE64_LENGTH (len1);
t1 = (char *)alloca (len1 + 1);
sprintf (t1, "%s:%s", user, passwd);
- t2 = (char *)alloca (1 + len2);
- base64_encode (t1, t2, len1);
- res = (char *)xmalloc (len2 + 11 + strlen (header));
- sprintf (res, "%s: Basic %s\r\n", header, t2);
- return res;
-}
+ t2 = (char *)alloca (BASE64_LENGTH (len1) + 1);
+ base64_encode (t1, len1, t2);
-#ifdef USE_DIGEST
-/* Parse HTTP `WWW-Authenticate:' header. AU points to the beginning
- of a field in such a header. If the field is the one specified by
- ATTR_NAME ("realm", "opaque", and "nonce" are used by the current
- digest authorization code), extract its value in the (char*)
- variable pointed by RET. Returns negative on a malformed header,
- or number of bytes that have been parsed by this call. */
-static int
-extract_header_attr (const char *au, const char *attr_name, char **ret)
-{
- const char *cp, *ep;
-
- ep = cp = au;
-
- if (strncmp (cp, attr_name, strlen (attr_name)) == 0)
- {
- cp += strlen (attr_name);
- if (!*cp)
- return -1;
- cp += skip_lws (cp);
- if (*cp != '=')
- return -1;
- if (!*++cp)
- return -1;
- cp += skip_lws (cp);
- if (*cp != '\"')
- return -1;
- if (!*++cp)
- return -1;
- for (ep = cp; *ep && *ep != '\"'; ep++)
- ;
- if (!*ep)
- return -1;
- FREE_MAYBE (*ret);
- *ret = strdupdelim (cp, ep);
- return ep - au + 1;
- }
- else
- return 0;
+ return concat_strings ("Basic ", t2, (char *) 0);
}
+#define SKIP_WS(x) do { \
+ while (c_isspace (*(x))) \
+ ++(x); \
+} while (0)
+
+#ifdef ENABLE_DIGEST
/* Dump the hexadecimal representation of HASH to BUF. HASH should be
an array of 16 bytes containing the hash keys, and BUF should be a
buffer of 33 writable characters (32 for hex digits plus one for
zero termination). */
static void
-dump_hash (unsigned char *buf, const unsigned char *hash)
+dump_hash (char *buf, const unsigned char *hash)
{
int i;
for (i = 0; i < MD5_HASHLEN; i++, hash++)
{
- *buf++ = XDIGIT_TO_xchar (*hash >> 4);
- *buf++ = XDIGIT_TO_xchar (*hash & 0xf);
+ *buf++ = XNUM_TO_digit (*hash >> 4);
+ *buf++ = XNUM_TO_digit (*hash & 0xf);
}
*buf = '\0';
}
/* Take the line apart to find the challenge, and compose a digest
authorization header. See RFC2069 section 2.1.2. */
-char *
+static char *
digest_authentication_encode (const char *au, const char *user,
- const char *passwd, const char *method,
- const char *path)
+ const char *passwd, const char *method,
+ const char *path)
{
static char *realm, *opaque, *nonce;
static struct {
{ "nonce", &nonce }
};
char *res;
+ param_token name, value;
realm = opaque = nonce = NULL;
- au += 6; /* skip over `Digest' */
- while (*au)
+ au += 6; /* skip over `Digest' */
+ while (extract_param (&au, &name, &value, ','))
{
- int i;
-
- au += skip_lws (au);
- for (i = 0; i < ARRAY_SIZE (options); i++)
- {
- int skip = extract_header_attr (au, options[i].name,
- options[i].variable);
- if (skip < 0)
- {
- FREE_MAYBE (realm);
- FREE_MAYBE (opaque);
- FREE_MAYBE (nonce);
- return NULL;
- }
- else if (skip)
- {
- au += skip;
- break;
- }
- }
- if (i == ARRAY_SIZE (options))
- {
- while (*au && *au != '=')
- au++;
- if (*au && *++au)
- {
- au += skip_lws (au);
- if (*au == '\"')
- {
- au++;
- while (*au && *au != '\"')
- au++;
- if (*au)
- au++;
- }
- }
- }
- while (*au && *au != ',')
- au++;
- if (*au)
- au++;
+ size_t i;
+ size_t namelen = name.e - name.b;
+ for (i = 0; i < countof (options); i++)
+ if (namelen == strlen (options[i].name)
+ && 0 == strncmp (name.b, options[i].name,
+ namelen))
+ {
+ *options[i].variable = strdupdelim (value.b, value.e);
+ break;
+ }
}
if (!realm || !nonce || !user || !passwd || !path || !method)
{
- FREE_MAYBE (realm);
- FREE_MAYBE (opaque);
- FREE_MAYBE (nonce);
+ xfree_null (realm);
+ xfree_null (opaque);
+ xfree_null (nonce);
return NULL;
}
/* Calculate the digest value. */
{
- struct md5_ctx ctx;
+ ALLOCA_MD5_CONTEXT (ctx);
unsigned char hash[MD5_HASHLEN];
- unsigned char a1buf[MD5_HASHLEN * 2 + 1], a2buf[MD5_HASHLEN * 2 + 1];
- unsigned char response_digest[MD5_HASHLEN * 2 + 1];
+ char a1buf[MD5_HASHLEN * 2 + 1], a2buf[MD5_HASHLEN * 2 + 1];
+ char response_digest[MD5_HASHLEN * 2 + 1];
/* A1BUF = H(user ":" realm ":" password) */
- md5_init_ctx (&ctx);
- md5_process_bytes (user, strlen (user), &ctx);
- md5_process_bytes (":", 1, &ctx);
- md5_process_bytes (realm, strlen (realm), &ctx);
- md5_process_bytes (":", 1, &ctx);
- md5_process_bytes (passwd, strlen (passwd), &ctx);
- md5_finish_ctx (&ctx, hash);
+ gen_md5_init (ctx);
+ gen_md5_update ((unsigned char *)user, strlen (user), ctx);
+ gen_md5_update ((unsigned char *)":", 1, ctx);
+ gen_md5_update ((unsigned char *)realm, strlen (realm), ctx);
+ gen_md5_update ((unsigned char *)":", 1, ctx);
+ gen_md5_update ((unsigned char *)passwd, strlen (passwd), ctx);
+ gen_md5_finish (ctx, hash);
dump_hash (a1buf, hash);
/* A2BUF = H(method ":" path) */
- md5_init_ctx (&ctx);
- md5_process_bytes (method, strlen (method), &ctx);
- md5_process_bytes (":", 1, &ctx);
- md5_process_bytes (path, strlen (path), &ctx);
- md5_finish_ctx (&ctx, hash);
+ gen_md5_init (ctx);
+ gen_md5_update ((unsigned char *)method, strlen (method), ctx);
+ gen_md5_update ((unsigned char *)":", 1, ctx);
+ gen_md5_update ((unsigned char *)path, strlen (path), ctx);
+ gen_md5_finish (ctx, hash);
dump_hash (a2buf, hash);
/* RESPONSE_DIGEST = H(A1BUF ":" nonce ":" A2BUF) */
- md5_init_ctx (&ctx);
- md5_process_bytes (a1buf, MD5_HASHLEN * 2, &ctx);
- md5_process_bytes (":", 1, &ctx);
- md5_process_bytes (nonce, strlen (nonce), &ctx);
- md5_process_bytes (":", 1, &ctx);
- md5_process_bytes (a2buf, MD5_HASHLEN * 2, &ctx);
- md5_finish_ctx (&ctx, hash);
+ gen_md5_init (ctx);
+ gen_md5_update ((unsigned char *)a1buf, MD5_HASHLEN * 2, ctx);
+ gen_md5_update ((unsigned char *)":", 1, ctx);
+ gen_md5_update ((unsigned char *)nonce, strlen (nonce), ctx);
+ gen_md5_update ((unsigned char *)":", 1, ctx);
+ gen_md5_update ((unsigned char *)a2buf, MD5_HASHLEN * 2, ctx);
+ gen_md5_finish (ctx, hash);
dump_hash (response_digest, hash);
- res = (char*) xmalloc (strlen (user)
- + strlen (user)
- + strlen (realm)
- + strlen (nonce)
- + strlen (path)
- + 2 * MD5_HASHLEN /*strlen (response_digest)*/
- + (opaque ? strlen (opaque) : 0)
- + 128);
- sprintf (res, "Authorization: Digest \
+ res = xmalloc (strlen (user)
+ + strlen (user)
+ + strlen (realm)
+ + strlen (nonce)
+ + strlen (path)
+ + 2 * MD5_HASHLEN /*strlen (response_digest)*/
+ + (opaque ? strlen (opaque) : 0)
+ + 128);
+ sprintf (res, "Digest \
username=\"%s\", realm=\"%s\", nonce=\"%s\", uri=\"%s\", response=\"%s\"",
- user, realm, nonce, path, response_digest);
+ user, realm, nonce, path, response_digest);
if (opaque)
{
- char *p = res + strlen (res);
- strcat (p, ", opaque=\"");
- strcat (p, opaque);
- strcat (p, "\"");
+ char *p = res + strlen (res);
+ strcat (p, ", opaque=\"");
+ strcat (p, opaque);
+ strcat (p, "\"");
}
- strcat (res, "\r\n");
}
return res;
}
-#endif /* USE_DIGEST */
-
-
-#define BEGINS_WITH(line, string_constant) \
- (!strncasecmp (line, string_constant, sizeof (string_constant) - 1) \
- && (ISSPACE (line[sizeof (string_constant) - 1]) \
- || !line[sizeof (string_constant) - 1]))
-
-static int
-known_authentication_scheme_p (const char *au)
+#endif /* ENABLE_DIGEST */
+
+/* Computing the size of a string literal must take into account that
+ value returned by sizeof includes the terminating \0. */
+#define STRSIZE(literal) (sizeof (literal) - 1)
+
+/* Whether chars in [b, e) begin with the literal string provided as
+ first argument and are followed by whitespace or terminating \0.
+ The comparison is case-insensitive. */
+#define STARTS(literal, b, e) \
+ ((e > b) \
+ && ((size_t) ((e) - (b))) >= STRSIZE (literal) \
+ && 0 == strncasecmp (b, literal, STRSIZE (literal)) \
+ && ((size_t) ((e) - (b)) == STRSIZE (literal) \
+ || c_isspace (b[STRSIZE (literal)])))
+
+static bool
+known_authentication_scheme_p (const char *hdrbeg, const char *hdrend)
{
- return BEGINS_WITH (au, "Basic")
- || BEGINS_WITH (au, "Digest")
- || BEGINS_WITH (au, "NTLM");
+ return STARTS ("Basic", hdrbeg, hdrend)
+#ifdef ENABLE_DIGEST
+ || STARTS ("Digest", hdrbeg, hdrend)
+#endif
+#ifdef ENABLE_NTLM
+ || STARTS ("NTLM", hdrbeg, hdrend)
+#endif
+ ;
}
-#undef BEGINS_WITH
+#undef STARTS
/* Create the HTTP authorization request header. When the
`WWW-Authenticate' response header is seen, according to the
appropriate HTTP authorization request header. */
static char *
create_authorization_line (const char *au, const char *user,
- const char *passwd, const char *method,
- const char *path)
+ const char *passwd, const char *method,
+ const char *path, bool *finished)
+{
+ /* We are called only with known schemes, so we can dispatch on the
+ first letter. */
+ switch (c_toupper (*au))
+ {
+ case 'B': /* Basic */
+ *finished = true;
+ return basic_authentication_encode (user, passwd);
+#ifdef ENABLE_DIGEST
+ case 'D': /* Digest */
+ *finished = true;
+ return digest_authentication_encode (au, user, passwd, method, path);
+#endif
+#ifdef ENABLE_NTLM
+ case 'N': /* NTLM */
+ if (!ntlm_input (&pconn.ntlm, au))
+ {
+ *finished = true;
+ return NULL;
+ }
+ return ntlm_output (&pconn.ntlm, user, passwd, finished);
+#endif
+ default:
+ /* We shouldn't get here -- this function should be only called
+ with values approved by known_authentication_scheme_p. */
+ abort ();
+ }
+}
+\f
+static void
+load_cookies (void)
{
- char *wwwauth = NULL;
-
- if (!strncasecmp (au, "Basic", 5))
- wwwauth = basic_authentication_encode (user, passwd, "Authorization");
- if (!strncasecmp (au, "NTLM", 4))
- wwwauth = basic_authentication_encode (user, passwd, "Authorization");
-#ifdef USE_DIGEST
- else if (!strncasecmp (au, "Digest", 6))
- wwwauth = digest_authentication_encode (au, user, passwd, method, path);
-#endif /* USE_DIGEST */
- return wwwauth;
+ if (!wget_cookie_jar)
+ wget_cookie_jar = cookie_jar_new ();
+ if (opt.cookies_input && !cookies_loaded_p)
+ {
+ cookie_jar_load (wget_cookie_jar, opt.cookies_input);
+ cookies_loaded_p = true;
+ }
+}
+
+void
+save_cookies (void)
+{
+ if (wget_cookie_jar)
+ cookie_jar_save (wget_cookie_jar, opt.cookies_output);
+}
+
+void
+http_cleanup (void)
+{
+ xfree_null (pconn.host);
+ if (wget_cookie_jar)
+ cookie_jar_delete (wget_cookie_jar);
+}
+
+void
+ensure_extension (struct http_stat *hs, const char *ext, int *dt)
+{
+ char *last_period_in_local_filename = strrchr (hs->local_file, '.');
+ char shortext[8];
+ int len = strlen (ext);
+ if (len == 5)
+ {
+ strncpy (shortext, ext, len - 1);
+ shortext[len - 2] = '\0';
+ }
+
+ if (last_period_in_local_filename == NULL
+ || !(0 == strcasecmp (last_period_in_local_filename, shortext)
+ || 0 == strcasecmp (last_period_in_local_filename, ext)))
+ {
+ int local_filename_len = strlen (hs->local_file);
+ /* Resize the local file, allowing for ".html" preceded by
+ optional ".NUMBER". */
+ hs->local_file = xrealloc (hs->local_file,
+ local_filename_len + 24 + len);
+ strcpy (hs->local_file + local_filename_len, ext);
+ /* If clobbering is not allowed and the file, as named,
+ exists, tack on ".NUMBER.html" instead. */
+ if (!ALLOW_CLOBBER && file_exists_p (hs->local_file))
+ {
+ int ext_num = 1;
+ do
+ sprintf (hs->local_file + local_filename_len,
+ ".%d%s", ext_num++, ext);
+ while (file_exists_p (hs->local_file));
+ }
+ *dt |= ADDED_HTML_EXTENSION;
+ }
}
+
+
+#ifdef TESTING
+
+const char *
+test_parse_content_disposition()
+{
+ int i;
+ struct {
+ char *hdrval;
+ char *opt_dir_prefix;
+ char *filename;
+ bool result;
+ } test_array[] = {
+ { "filename=\"file.ext\"", NULL, "file.ext", true },
+ { "filename=\"file.ext\"", "somedir", "somedir/file.ext", true },
+ { "attachment; filename=\"file.ext\"", NULL, "file.ext", true },
+ { "attachment; filename=\"file.ext\"", "somedir", "somedir/file.ext", true },
+ { "attachment; filename=\"file.ext\"; dummy", NULL, "file.ext", true },
+ { "attachment; filename=\"file.ext\"; dummy", "somedir", "somedir/file.ext", true },
+ { "attachment", NULL, NULL, false },
+ { "attachment", "somedir", NULL, false },
+ };
+
+ for (i = 0; i < sizeof(test_array)/sizeof(test_array[0]); ++i)
+ {
+ char *filename;
+ bool res;
+
+ opt.dir_prefix = test_array[i].opt_dir_prefix;
+ res = parse_content_disposition (test_array[i].hdrval, &filename);
+
+ mu_assert ("test_parse_content_disposition: wrong result",
+ res == test_array[i].result
+ && (res == false
+ || 0 == strcmp (test_array[i].filename, filename)));
+ }
+
+ return NULL;
+}
+
+#endif /* TESTING */
+
+/*
+ * vim: et sts=2 sw=2 cino+={s
+ */
+
projects / wget / blobdiff