/* HTTP support.
- Copyright (C) 2005 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 GNU Wget.
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
+the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
GNU Wget is distributed in the hope that it will be useful,
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
-along with Wget; 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/>.
-In addition, as a special exception, the Free Software Foundation
-gives permission to link the code of its release of Wget with the
-OpenSSL project's "OpenSSL" library (or with modified versions of it
-that use the same license as the "OpenSSL" library), and distribute
-the linked executables. You must obey the GNU General Public License
-in all respects for all of the code used other than "OpenSSL". If you
-modify this file, you may extend this exception to your version of the
-file, but you are not obligated to do so. If you do not wish to do
-so, delete this exception statement from your version. */
+Additional permission under GNU GPL version 3 section 7
-#include <config.h>
+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
-#ifndef errno
-extern int errno;
-#endif
+#include <time.h>
+#include <locale.h>
-#include "wget.h"
+#include "hash.h"
+#include "http.h"
#include "utils.h"
#include "url.h"
#include "host.h"
# 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;
-extern LARGE_INT total_downloaded_bytes;
-extern FILE *output_stream;
-extern int output_stream_regular;
+/* 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 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 \
- || (x) == HTTP_STATUS_SEE_OTHER \
- || (x) == HTTP_STATUS_TEMPORARY_REDIRECT)
+#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_SEE_OTHER 303 /* from HTTP/1.1 */
-#define HTTP_STATUS_NOT_MODIFIED 304
-#define HTTP_STATUS_TEMPORARY_REDIRECT 307 /* from HTTP/1.1 */
+#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
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. */
// Value freshly allocated, free it when done.
request_set_header (req, "Range",
aprintf ("bytes=%s-", number_to_static_string (hs->restval)),
- rel_value);
+ rel_value);
*/
static void
request_set_header (struct request *req, char *name, char *value,
- enum rp release_policy)
+ 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. */
+ free it now to avoid leaks. */
if (release_policy == rel_name || release_policy == rel_both)
- xfree (name);
+ xfree (name);
return;
}
{
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;
- }
+ {
+ /* Replace existing header. */
+ release_header (hdr);
+ hdr->name = name;
+ hdr->value = value;
+ hdr->release_policy = release_policy;
+ return;
+ }
}
/* Install new header. */
return;
BOUNDED_TO_ALLOCA (header, p, name);
++p;
- while (ISSPACE (*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 1 if the
- header was actually removed, 0 otherwise. */
+/* Remove the header with specified name from REQ. Returns true if
+ the header was actually removed, false otherwise. */
-static int
+static bool
request_remove_header (struct request *req, char *name)
{
int 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 1;
- }
+ {
+ 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 0;
+ return false;
}
-#define APPEND(p, str) do { \
- int A_len = strlen (str); \
- memcpy (p, str, A_len); \
- p += A_len; \
+#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. */
/* Send the request to the server. */
- write_error = fd_write (fd, request_string, size - 1, -1.0);
+ write_error = fd_write (fd, request_string, size - 1, -1);
if (write_error < 0)
logprintf (LOG_VERBOSE, _("Failed writing HTTP request: %s.\n"),
- strerror (errno));
+ fd_errstr (fd));
return write_error;
}
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. */
int towrite;
int length = fread (chunk, 1, sizeof (chunk), fp);
if (length == 0)
- break;
+ break;
towrite = MIN (promised_size - written, length);
- write_error = fd_write (sock, chunk, towrite, -1.0);
+ write_error = fd_write (sock, chunk, towrite, -1);
if (write_error < 0)
- {
- fclose (fp);
- return -1;
- }
+ {
+ fclose (fp);
+ return -1;
+ }
written += towrite;
}
fclose (fp);
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 *hunk, int oldlen, int peeklen)
+response_head_terminator (const char *start, const char *peeked, int peeklen)
{
- const char *start, *end;
+ 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 (oldlen == 0 && 0 != memcmp (hunk, "HTTP", MIN (peeklen, 4)))
- return hunk;
-
- if (oldlen < 4)
- start = hunk;
- else
- start = hunk + oldlen - 4;
- end = hunk + oldlen + peeklen;
-
- for (; start < end - 1; start++)
- if (*start == '\n')
+ 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 (start < end - 2
- && start[1] == '\r'
- && start[2] == '\n')
- return start + 3;
- if (start[1] == '\n')
- return start + 2;
+ 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. This
- is not meant to impose an arbitrary limit, but to protect the user
- from Wget slurping up available memory upon encountering malicious
- or buggy server output. Define it to 0 to remove the limit. */
+/* 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_http_response_head (int fd)
{
return fd_read_hunk (fd, response_head_terminator, 512,
- HTTP_RESPONSE_MAX_SIZE);
+ HTTP_RESPONSE_MAX_SIZE);
}
struct response {
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. */
+ (HTTP/0.9) response. In that case, don't set HEADERS at
+ all. */
return resp;
}
/* Break upon encountering an empty line. */
if (!hdr[0] || (hdr[0] == '\r' && hdr[1] == '\n') || hdr[0] == '\n')
- break;
+ break;
/* Find the end of HDR, including continuations. */
do
- {
- const char *end = strchr (hdr, '\n');
- if (end)
- hdr = end + 1;
- else
- hdr += strlen (hdr);
- }
+ {
+ 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 *);
static int
resp_header_locate (const struct response *resp, const char *name, int start,
- const char **begptr, const char **endptr)
+ const char **begptr, const char **endptr)
{
int i;
const char **headers = resp->headers;
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 && ISSPACE (*b))
- ++b;
- while (b < e && ISSPACE (e[-1]))
- --e;
- *begptr = b;
- *endptr = e;
- return i;
- }
+ && 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 1. Otherwise return 0.
+ position, and return true. Otherwise return false.
This function is used as a building block for resp_header_copy
and resp_header_strdup. */
-static int
+static bool
resp_header_get (const struct response *resp, const char *name,
- const char **begptr, const char **endptr)
+ 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, 1 is returned, otherwise 0. If there should be no limit on
- the size of the header, use resp_header_strdup instead.
+ 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 int
+static bool
resp_header_copy (const struct response *resp, const char *name,
- char *buf, int bufsize)
+ char *buf, int bufsize)
{
const char *b, *e;
if (!resp_header_get (resp, name, &b, &e))
- return 0;
+ return false;
if (bufsize)
{
int len = MIN (e - b, bufsize - 1);
memcpy (buf, b, len);
buf[len] = '\0';
}
- return 1;
+ return true;
}
/* Return the value of header named NAME in RESP, allocated with
{
/* For a HTTP/0.9 response, assume status 200. */
if (message)
- *message = xstrdup (_("No headers, assuming HTTP/0.9"));
+ *message = xstrdup (_("No headers, assuming HTTP/0.9"));
return 200;
}
if (p < end && *p == '/')
{
++p;
- while (p < end && ISDIGIT (*p))
- ++p;
+ while (p < end && c_isdigit (*p))
+ ++p;
if (p < end && *p == '.')
- ++p;
- while (p < end && ISDIGIT (*p))
- ++p;
+ ++p;
+ while (p < end && c_isdigit (*p))
+ ++p;
}
- while (p < end && ISSPACE (*p))
+ while (p < end && c_isspace (*p))
++p;
- if (end - p < 3 || !ISDIGIT (p[0]) || !ISDIGIT (p[1]) || !ISDIGIT (p[2]))
+ if (end - p < 3 || !c_isdigit (p[0]) || !c_isdigit (p[1]) || !c_isdigit (p[2]))
return -1;
status = 100 * (p[0] - '0') + 10 * (p[1] - '0') + (p[2] - '0');
if (message)
{
- while (p < end && ISSPACE (*p))
- ++p;
- while (p < end && ISSPACE (end[-1]))
- --end;
+ while (p < end && c_isspace (*p))
+ ++p;
+ while (p < end && c_isspace (end[-1]))
+ --end;
*message = strdupdelim (p, end);
}
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. */
const char *e = resp->headers[i + 1];
/* Skip CRLF */
if (b < e && e[-1] == '\n')
- --e;
+ --e;
if (b < e && e[-1] == '\r')
- --e;
- /* This is safe even on printfs with broken handling of "%.<n>s"
- because resp->headers ends with \0. */
- logprintf (LOG_VERBOSE, "%s%.*s\n", prefix, e - b, b);
+ --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
+ 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)
+ wgint *last_byte_ptr, wgint *entity_length_ptr)
{
wgint num;
/* Ancient versions of Netscape proxy server, presumably predating
rfc2068, sent out `Content-Range' without the "bytes"
specifier. */
- if (!strncasecmp (hdr, "bytes", 5))
+ if (0 == strncasecmp (hdr, "bytes", 5))
{
hdr += 5;
/* "JavaWebServer/1.1.1" sends "bytes: x-y/z", contrary to the
- HTTP spec. */
+ HTTP spec. */
if (*hdr == ':')
- ++hdr;
- while (ISSPACE (*hdr))
- ++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;
+ 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;
+ if (*hdr != '/' || !c_isdigit (*(hdr + 1)))
+ return false;
*last_byte_ptr = num;
++hdr;
- for (num = 0; ISDIGIT (*hdr); hdr++)
- num = 10 * num + (*hdr - '0');
+ if (*hdr == '*')
+ num = -1;
+ else
+ for (num = 0; c_isdigit (*hdr); hdr++)
+ num = 10 * num + (*hdr - '0');
*entity_length_ptr = num;
- return 1;
+ return true;
}
/* Read the body of the request, but don't store it anywhere and don't
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, 0 is returned, non-zero otherwise. In debug
+ If reading fails, false is returned, true otherwise. In debug
mode, the body is displayed for debugging purposes. */
-static int
+static bool
skip_short_body (int fd, wgint contlen)
{
enum {
- SKIP_SIZE = 512, /* size of the download buffer */
- SKIP_THRESHOLD = 4096 /* the largest size we read */
+ 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 */
+ dlbuf[SKIP_SIZE] = '\0'; /* so DEBUGP can safely print it */
/* We shouldn't get here with unknown contlen. (This will change
with HTTP/1.1, which supports "chunked" transfer.) */
/* 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 0;
+ 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), -1.0);
+ 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 ? strerror (errno) : "EOF received"));
- return 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. */
+ we've zero-terminated dlbuf above. */
DEBUGP (("%.*s", ret, dlbuf));
}
DEBUGP (("] done.\n"));
- return 1;
+ return true;
+}
+
+/* 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)
+{
+ 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;
+}
+
+#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)
+{
+ 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
number of these connections. */
/* Whether a persistent connection is active. */
-static int pconn_active;
+static bool pconn_active;
static struct {
/* The socket of the connection. */
int port;
/* Whether a ssl handshake has occoured on this connection. */
- int ssl;
+ 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.) */
- int authorized;
+ bool authorized;
#ifdef ENABLE_NTLM
/* NTLM data of the current connection. */
invalidate_persistent (void)
{
DEBUGP (("Disabling further reuse of socket %d.\n", pconn.socket));
- pconn_active = 0;
+ pconn_active = false;
fd_close (pconn.socket);
xfree (pconn.host);
xzero (pconn);
If a previous connection was persistent, it is closed. */
static void
-register_persistent (const char *host, int port, int fd, int ssl)
+register_persistent (const char *host, int port, int fd, bool ssl)
{
if (pconn_active)
{
if (pconn.socket == fd)
- {
- /* The connection FD is already registered. */
- return;
- }
+ {
+ /* The connection FD is already registered. */
+ return;
+ }
else
- {
- /* 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 ();
- }
+ {
+ /* 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 = 1;
+ pconn_active = true;
pconn.socket = fd;
pconn.host = xstrdup (host);
pconn.port = port;
pconn.ssl = ssl;
- pconn.authorized = 0;
+ 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, int port, int ssl,
- int *host_lookup_failed)
+static bool
+persistent_available_p (const char *host, int port, bool ssl,
+ bool *host_lookup_failed)
{
/* First, check whether a persistent connection is active at all. */
if (!pconn_active)
- return 0;
+ 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 0;
+ return false;
/* If we're not connecting to the same port, we're not interested. */
if (port != pconn.port)
- return 0;
+ 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. */
-
- int found;
+ 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 0;
+ /* 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. */
+ 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 0;
- }
+ {
+ /* 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 = 1;
- return 0;
- }
+ {
+ *host_lookup_failed = true;
+ return false;
+ }
found = address_list_contains (al, &ip);
address_list_release (al);
if (!found)
- return 0;
+ 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. */
+ 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 server implement a liberal (short) timeout
+ 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. */
+ 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))
{
let's invalidate the persistent connection before returning
0. */
invalidate_persistent ();
- return 0;
+ return false;
}
- return 1;
+ return true;
}
/* The idea behind these two CLOSE macros is to distinguish between
`pc_active_p && (fd) == pc_last_fd' is "we're *now* using an
active, registered connection". */
-#define CLOSE_FINISH(fd) do { \
- if (!keep_alive) \
- { \
- if (pconn_active && (fd) == pconn.socket) \
- invalidate_persistent (); \
- else \
- { \
- fd_close (fd); \
- fd = -1; \
- } \
- } \
+#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 { \
- if (pconn_active && (fd) == pconn.socket) \
- invalidate_persistent (); \
- else \
- fd_close (fd); \
- fd = -1; \
+#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
{
- wgint len; /* received length */
- wgint contlen; /* expected length */
- wgint 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 */
- 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. */
+ 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 */
};
static void
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->error = NULL;
}
-static char *create_authorization_line PARAMS ((const char *, const char *,
- const char *, const char *,
- const char *, int *));
-static char *basic_authentication_encode PARAMS ((const char *, const char *));
-static int known_authentication_scheme_p PARAMS ((const char *, const char *));
-
-time_t http_atotm PARAMS ((const char *));
-
-#define BEGINS_WITH(line, string_constant) \
- (!strncasecmp (line, string_constant, sizeof (string_constant) - 1) \
- && (ISSPACE (line[sizeof (string_constant) - 1]) \
+#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]))
-#define SET_USER_AGENT(req) do { \
- if (!opt.useragent) \
- request_set_header (req, "User-Agent", \
- aprintf ("Wget/%s", version_string), rel_value); \
- else if (*opt.useragent) \
- request_set_header (req, "User-Agent", opt.useragent, rel_none); \
+#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] */
+
+/* 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
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 url *u, struct http_stat *hs, int *dt, struct url *proxy)
+gethttp (struct url *u, struct http_stat *hs, int *dt, struct url *proxy,
+ struct iri *iri)
{
struct request *req;
int sock = -1;
int flags;
- /* Set to 1 when the authorization has failed permanently and should
+ /* Set to 1 when the authorization has already been sent and should
not be tried again. */
- int auth_finished = 0;
+ bool auth_finished = false;
+
+ /* 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;
/* Whether NTLM authentication is used for this request. */
- int ntlm_seen = 0;
+ bool ntlm_seen = false;
/* Whether our connection to the remote host is through SSL. */
- int using_ssl = 0;
+ bool using_ssl = false;
+
+ /* Whether a HEAD request will be issued (as opposed to GET or
+ POST). */
+ bool head_only = !!(*dt & HEAD_ONLY);
char *head;
struct response *resp;
/* Whether this connection will be kept alive after the HTTP request
is done. */
- int keep_alive;
+ bool keep_alive;
/* Whether keep-alive should be inhibited.
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. */
- int inhibit_keep_alive =
+ bool inhibit_keep_alive =
!opt.http_keep_alive || opt.ignore_length || proxy != NULL;
/* Headers sent when using POST. */
wgint post_data_size = 0;
- int host_lookup_failed = 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. */
+ it becomes a no-op. */
if (!ssl_init ())
- {
- scheme_disable (SCHEME_HTTPS);
- logprintf (LOG_NOTQUIET,
- _("Disabling SSL due to encountered errors.\n"));
- return SSLINITFAILED;
- }
+ {
+ scheme_disable (SCHEME_HTTPS);
+ logprintf (LOG_NOTQUIET,
+ _("Disabling SSL due to encountered errors.\n"));
+ return SSLINITFAILED;
+ }
}
#endif /* HAVE_SSL */
- 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 (*hs->local_file != NULL);
-
/* Initialize certain elements of struct http_stat. */
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;
conn = u;
{
char *meth_arg;
const char *meth = "GET";
- if (*dt & HEAD_ONLY)
+ if (head_only)
meth = "HEAD";
else if (opt.post_file_name || opt.post_data)
meth = "POST";
"param=value", full_path will be "/foo/bar?param=value". */
if (proxy
#ifdef HAVE_SSL
- /* 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
+ /* 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_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);
+ aprintf ("bytes=%s-",
+ number_to_static_string (hs->restval)),
+ rel_value);
SET_USER_AGENT (req);
request_set_header (req, "Accept", "*/*", rel_none);
user = user ? user : (opt.http_user ? opt.http_user : opt.user);
passwd = passwd ? passwd : (opt.http_passwd ? opt.http_passwd : opt.passwd);
- if (user && 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))
{
- /* 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. */
- request_set_header (req, "Authorization",
- basic_authentication_encode (user, passwd),
- rel_value);
+ /* 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);
}
- proxyauth = NULL;
- 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. */
- if (opt.proxy_user && opt.proxy_passwd)
- {
- proxy_user = opt.proxy_user;
- proxy_passwd = opt.proxy_passwd;
- }
- else
- {
- 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);
-
- /* If we're using a proxy, we will be connecting to the proxy
- server. */
- conn = proxy;
+ /* Generate the Host header, HOST:PORT. Take into account that:
- /* 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);
- }
+ - 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". */
{
- /* Whether we need to print the host header with braces around
- host, e.g. "Host: [3ffe:8100:200:2::2]:1234" instead of the
- usual "Host: symbolic-name:1234". */
- int squares = strchr (u->host, ':') != NULL;
- if (u->port == scheme_default_port (u->scheme))
- request_set_header (req, "Host",
- aprintf (squares ? "[%s]" : "%s", u->host),
- rel_value);
- else
- request_set_header (req, "Host",
- aprintf (squares ? "[%s]:%d" : "%s:%d",
- u->host, u->port),
- rel_value);
+ /* 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)
if (opt.cookies)
request_set_header (req, "Cookie",
- cookie_header (wget_cookie_jar,
- u->host, u->port, u->path,
+ cookie_header (wget_cookie_jar,
+ u->host, u->port, u->path,
#ifdef HAVE_SSL
- u->scheme == SCHEME_HTTPS
+ u->scheme == SCHEME_HTTPS
#else
- 0
+ 0
#endif
- ),
- rel_value);
+ ),
+ rel_value);
if (opt.post_data || opt.post_file_name)
{
request_set_header (req, "Content-Type",
- "application/x-www-form-urlencoded", rel_none);
+ "application/x-www-form-urlencoded", rel_none);
if (opt.post_data)
- post_data_size = strlen (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 missing: %s\n",
- opt.post_file_name);
- post_data_size = 0;
- }
- }
+ {
+ 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);
+ xstrdup (number_to_static_string (post_data_size)),
+ rel_value);
}
/* Add the user headers. */
{
int i;
for (i = 0; opt.user_headers[i]; i++)
- request_set_user_header (req, opt.user_headers[i]);
+ request_set_user_header (req, opt.user_headers[i]);
}
retry_with_auth:
without authorization header fails. (Expected to happen at least
for the Digest authorization scheme.) */
- keep_alive = 0;
+ proxyauth = NULL;
+ 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. */
+ if (opt.proxy_user && opt.proxy_passwd)
+ {
+ proxy_user = opt.proxy_user;
+ proxy_passwd = opt.proxy_passwd;
+ }
+ else
+ {
+ 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);
+
+ /* 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);
+ }
+
+ 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. */
+ 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;
+ relevant = u;
#endif
if (persistent_available_p (relevant->host, relevant->port,
#ifdef HAVE_SSL
- relevant->scheme == SCHEME_HTTPS,
+ relevant->scheme == SCHEME_HTTPS,
#else
- 0,
+ 0,
#endif
- &host_lookup_failed))
- {
- sock = pconn.socket;
- using_ssl = pconn.ssl;
- logprintf (LOG_VERBOSE, _("Reusing existing connection to %s:%d.\n"),
- escnonprint (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");
- }
+ &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 (sock < 0)
{
- /* In its current implementation, persistent_available_p will
- look up conn->host in some cases. If that lookup failed, we
- don't need to bother with connect_to_host. */
- if (host_lookup_failed)
- {
- request_free (req);
- return HOSTERR;
- }
-
sock = connect_to_host (conn->host, conn->port);
if (sock == E_HOST)
- {
- request_free (req);
- return HOSTERR;
- }
+ {
+ request_free (req);
+ return HOSTERR;
+ }
else if (sock < 0)
- {
- request_free (req);
- return (retryable_socket_connect_error (errno)
- ? CONERROR : CONIMPOSSIBLE);
- }
+ {
+ request_free (req);
+ return (retryable_socket_connect_error (errno)
+ ? CONERROR : CONIMPOSSIBLE);
+ }
#ifdef HAVE_SSL
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)
- {
- logprintf (LOG_VERBOSE, _("Failed writing to proxy: %s.\n"),
- strerror (errno));
- CLOSE_INVALIDATE (sock);
- return WRITEFAILED;
- }
-
- head = read_http_response_head (sock);
- if (!head)
- {
- logprintf (LOG_VERBOSE, _("Failed reading proxy response: %s\n"),
- strerror (errno));
- 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);
- resp_free (resp);
- xfree (head);
- if (statcode != 200)
- {
- failed_tunnel:
- logprintf (LOG_NOTQUIET, _("Proxy tunneling failed: %s"),
- message ? escnonprint (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;
- }
+ {
+ /* 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 (sock) || !ssl_check_certificate (sock, u->host))
- {
- fd_close (sock);
- return CONSSLERR;
- }
- using_ssl = 1;
- }
+ {
+ if (!ssl_connect_wget (sock) || !ssl_check_certificate (sock, u->host))
+ {
+ fd_close (sock);
+ return CONSSLERR;
+ }
+ using_ssl = true;
+ }
#endif /* HAVE_SSL */
}
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, -1.0);
- }
+ {
+ 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);
+ write_error = post_file (sock, opt.post_file_name, post_data_size);
}
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... "),
- proxy ? "Proxy" : "HTTP");
+ proxy ? "Proxy" : "HTTP");
contlen = -1;
contrange = 0;
*dt &= ~RETROKF;
if (!head)
{
if (errno == 0)
- {
- logputs (LOG_NOTQUIET, _("No data received.\n"));
- CLOSE_INVALIDATE (sock);
- request_free (req);
- return HEOF;
- }
+ {
+ 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"),
- strerror (errno));
- CLOSE_INVALIDATE (sock);
- request_free (req);
- return HERR;
- }
+ {
+ 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));
/* 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 ? escnonprint (message) : "");
+ message ? quotearg_style (escape_quoting_style, message) : "");
else
{
logprintf (LOG_VERBOSE, "\n");
print_server_response (resp, " ");
}
- if (!opt.ignore_length
- && resp_header_copy (resp, "Content-Length", hdrval, sizeof (hdrval)))
- {
- 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
- contlen = parsed;
- }
-
/* Check for keep-alive related responses. */
if (!inhibit_keep_alive && contlen != -1)
{
if (resp_header_copy (resp, "Keep-Alive", NULL, 0))
- keep_alive = 1;
+ keep_alive = true;
else if (resp_header_copy (resp, "Connection", hdrval, sizeof (hdrval)))
- {
- if (0 == strcasecmp (hdrval, "Keep-Alive"))
- keep_alive = 1;
- }
+ {
+ 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. */
if (statcode == HTTP_STATUS_UNAUTHORIZED)
{
/* Authorization is required. */
- if (keep_alive && skip_short_body (sock, contlen))
- CLOSE_FINISH (sock);
+ if (keep_alive && !head_only && skip_short_body (sock, contlen))
+ CLOSE_FINISH (sock);
else
- CLOSE_INVALIDATE (sock);
- pconn.authorized = 0;
+ 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 (BEGINS_WITH (www_authenticate, "Basic"))
- /* If the authentication scheme is "Basic", which we send
- by default, there's no sense in retrying either. (This
- should be changed when we stop sending "Basic" data by
- default.) */
- ;
- else
- {
- 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 = 1;
- xfree (pth);
- goto retry_with_auth;
- }
- }
+ {
+ /* 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;
}
else /* statcode != HTTP_STATUS_UNAUTHORIZED */
{
/* Kludge: if NTLM is used, mark the TCP connection as authorized. */
if (ntlm_seen)
- pconn.authorized = 1;
+ pconn.authorized = true;
+ }
+
+ /* 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);
+ }
}
+
+ /* 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;
+
+ /* 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 (!opt.ignore_length
+ && resp_header_copy (resp, "Content-Length", hdrval, sizeof (hdrval)))
+ {
+ 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
+ contlen = parsed;
+ }
+
request_free (req);
hs->statcode = statcode;
hs->error = xstrdup (_("(no description)"));
else
hs->error = xstrdup (message);
- xfree (message);
+ xfree_null (message);
type = resp_header_strdup (resp, "Content-Type");
if (type)
{
char *tmp = strchr (type, ';');
if (tmp)
- {
- while (tmp > type && ISSPACE (tmp[-1]))
- --tmp;
- *tmp = '\0';
- }
+ {
+ /* 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. */
- {
- char *pth = NULL;
- 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);
- if (pth == NULL)
- {
- /* u->path doesn't begin with /, which cookies.c expects. */
- pth = (char *) alloca (1 + strlen (u->path) + 1);
- pth[0] = '/';
- strcpy (pth + 1, u->path);
- }
- cookie_handle_set_cookie (wget_cookie_jar, u->host, u->port, pth,
- set_cookie);
- }
- }
+ 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;
+ &entity_length))
+ {
+ contrange = first_byte_pos;
+ contlen = last_byte_pos - first_byte_pos + 1;
+ }
}
resp_free (resp);
- xfree (head);
/* 20x responses are counted among successful by default. */
if (H_20X (statcode))
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 ? escnonprint_uri (hs->newloc) : _("unspecified"),
- hs->newloc ? _(" [following]") : "");
- if (keep_alive && skip_short_body (sock, contlen))
- CLOSE_FINISH (sock);
- else
- CLOSE_INVALIDATE (sock);
- xfree_null (type);
- 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
content-type. */
if (!type ||
0 == strncasecmp (type, TEXTHTML_S, strlen (TEXTHTML_S)) ||
- 0 == strncasecmp (type, TEXTXHTML_S, strlen (TEXTXHTML_S)))
+ 0 == strncasecmp (type, TEXTXHTML_S, strlen (TEXTXHTML_S)))
*dt |= TEXTHTML;
else
*dt &= ~TEXTHTML;
- 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(*hs->local_file, '.');
-
- if (last_period_in_local_filename == NULL
- || !(0 == strcasecmp (last_period_in_local_filename, ".htm")
- || 0 == strcasecmp (last_period_in_local_filename, ".html")))
- {
- size_t local_filename_len = strlen(*hs->local_file);
-
- *hs->local_file = xrealloc(*hs->local_file,
- local_filename_len + sizeof(".html"));
- strcpy(*hs->local_file + local_filename_len, ".html");
+ if (type &&
+ 0 == strncasecmp (type, TEXTCSS_S, strlen (TEXTCSS_S)))
+ *dt |= TEXTCSS;
+ else
+ *dt &= ~TEXTCSS;
- *dt |= ADDED_HTML_EXTENSION;
- }
+ 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)
+ 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. */
+ 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. */
/* 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. */
+ 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. */
+ Bail out. */
xfree_null (type);
CLOSE_INVALIDATE (sock);
+ xfree (head);
return RANGEERR;
}
- hs->contlen = contlen + contrange;
+ if (contlen == -1)
+ hs->contlen = -1;
+ else
+ hs->contlen = contlen + contrange;
if (opt.verbose)
{
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, with_thousand_seps (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"),
- with_thousand_seps (contlen),
- human_readable (contlen));
- else
- logprintf (LOG_VERBOSE, _(", %s remaining"),
- with_thousand_seps (contlen));
- }
- }
- else
- logputs (LOG_VERBOSE,
- opt.ignore_length ? _("ignored") : _("unspecified"));
- if (type)
- logprintf (LOG_VERBOSE, " [%s]\n", escnonprint (type));
- else
- logputs (LOG_VERBOSE, "\n");
- }
+ {
+ /* 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. */
+ 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 = 0;
hs->res = 0;
xfree_null (type);
- /* Pre-1.10 Wget used CLOSE_INVALIDATE here. Now we trust the
- servers not to send body in response to a HEAD request. If
- you encounter such a server (more likely a broken CGI), use
- `--no-http-keep-alive'. */
- CLOSE_FINISH (sock);
+ 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 (!output_stream)
{
- mkalldirs (*hs->local_file);
+ mkalldirs (hs->local_file);
if (opt.backups)
- rotate_backups (*hs->local_file);
+ rotate_backups (hs->local_file);
if (hs->restval)
- fp = fopen (*hs->local_file, "ab");
- else if (opt.noclobber || opt.always_rest || opt.timestamping || opt.dirstruct
- || opt.output_document)
- fp = fopen (*hs->local_file, "wb");
+ {
+#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, 1);
- 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);
- return FOPEN_EXCL_ERR;
- }
- }
+ {
+ 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", *hs->local_file, strerror (errno));
- CLOSE_INVALIDATE (sock);
- return FOPENERR;
- }
+ {
+ logprintf (LOG_NOTQUIET, "%s: %s\n", hs->local_file, strerror (errno));
+ CLOSE_INVALIDATE (sock);
+ xfree (head);
+ return FOPENERR;
+ }
}
else
fp = output_stream;
- /* #### This confuses the timestamping code that checks for file
- size. Maybe we should save some additional information? */
- if (opt.save_headers)
+ /* 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 (keep_alive)
+ 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
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);
+ hs->restval, &hs->rd_size, &hs->len, &hs->dltime,
+ flags);
if (hs->res >= 0)
CLOSE_FINISH (sock);
else
- CLOSE_INVALIDATE (sock);
+ {
+ if (hs->res < 0)
+ hs->rderrmsg = xstrdup (fd_errstr (sock));
+ CLOSE_INVALIDATE (sock);
+ }
- {
- /* 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 (!output_stream)
- flush_res = fclose (fp);
- else
- flush_res = fflush (fp);
- if (flush_res == EOF)
- hs->res = -2;
- }
+ if (!output_stream)
+ fclose (fp);
if (hs->res == -2)
return FWRITEERR;
return RETRFINISHED;
retried, and retried, and retried, and... */
uerr_t
http_loop (struct url *u, char **newloc, char **local_file, const char *referer,
- int *dt, struct url *proxy)
+ 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, *locf, *tmrate;
- uerr_t err;
- time_t tml = -1, tmr = -1; /* local and remote time-stamps */
- wgint local_size = 0; /* the size of the local file */
- size_t filename_len;
- struct http_stat hstat; /* HTTP status */
+ 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;
- char *dummy = NULL;
+ 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)
- {
- 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 = 1;
- }
- }
+ load_cookies();
- *newloc = NULL;
-
- /* Warn on (likely bogus) wildcard usage in HTTP. */
- if (has_wildcards_p (u->path))
+ /* 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"));
+ /* Setup hstat struct. */
xzero (hstat);
+ hstat.referer = referer;
- /* Determine the local filename. */
- if (local_file && *local_file)
- hstat.local_file = local_file;
- else if (local_file && !opt.output_document)
+ if (opt.output_document)
{
- *local_file = url_file_name (u);
- hstat.local_file = local_file;
+ hstat.local_file = xstrdup (opt.output_document);
+ got_name = true;
}
- else
+ else if (!opt.content_disposition)
{
- dummy = url_file_name (u);
- hstat.local_file = &dummy;
- /* be honest about where we will save the file */
- if (local_file && opt.output_document)
- *local_file = HYPHENP (opt.output_document) ? NULL : xstrdup (opt.output_document);
+ hstat.local_file = url_file_name (u);
+ got_name = true;
}
- if (!opt.output_document)
- locf = *hstat.local_file;
- else
- locf = opt.output_document;
-
- hstat.referer = referer;
-
- filename_len = strlen (*hstat.local_file);
- filename_plus_orig_suffix = alloca (filename_len + sizeof (".orig"));
-
- if (opt.noclobber && file_exists_p (*hstat.local_file))
+ /* 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"), *hstat.local_file);
+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 "htm" or similar, assume text/html. */
- if (has_html_suffix_p (*hstat.local_file))
- *dt |= TEXTHTML;
+ if (has_html_suffix_p (hstat.local_file))
+ *dt |= TEXTHTML;
- xfree_null (dummy);
- return RETROK;
+ ret = RETROK;
+ goto exit;
}
- use_ts = 0;
- if (opt.timestamping)
- {
- int local_dot_orig_file_exists = 0;
-
- 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, *hstat.local_file, filename_len);
- memcpy (filename_plus_orig_suffix + filename_len,
- ".orig", sizeof (".orig"));
-
- /* Try to stat() the .orig file. */
- if (stat (filename_plus_orig_suffix, &st) == 0)
- {
- local_dot_orig_file_exists = 1;
- local_filename = filename_plus_orig_suffix;
- }
- }
-
- if (!local_dot_orig_file_exists)
- /* Couldn't stat() <file>.orig, so try to stat() <file>. */
- if (stat (*hstat.local_file, &st) == 0)
- local_filename = *hstat.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. */
- {
- use_ts = 1;
- tml = st.st_mtime;
-#ifdef WINDOWS
- /* Modification time granularity is 2 seconds for Windows, so
- increase local time by 1 second for later comparison. */
- tml++;
-#endif
- local_size = st.st_size;
- got_head = 0;
- }
- }
- /* Reset the counter. */
+ /* Reset the counter. */
count = 0;
+
+ /* 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 = url_string (u, 1);
- char tmp[256];
- 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);
+ 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;
+ *dt &= ~HEAD_ONLY;
/* Decide whether or not to restart. */
- hstat.restval = 0;
- if (count > 1)
- hstat.restval = hstat.len; /* continue where we left off */
- else if (opt.always_rest
- && stat (locf, &st) == 0
- && S_ISREG (st.st_mode))
- hstat.restval = st.st_size;
+ 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
+ hstat.restval = 0;
/* 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;
+ 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
- *dt &= ~SEND_NOCACHE;
+ *dt &= ~SEND_NOCACHE;
/* Try fetching the document, or at least its head. */
- err = gethttp (u, &hstat, dt, proxy);
-
- /* 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
- *hstat.local_file to tack on ".html". */
- if (!opt.output_document)
- locf = *hstat.local_file;
+ 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: 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. */
- free_hstat (&hstat);
- printwhat (count, opt.ntry);
- if (err == FOPEN_EXCL_ERR)
- {
- /* Re-determine the file name. */
- if (local_file && *local_file)
- {
- xfree (*local_file);
- *local_file = url_file_name (u);
- hstat.local_file = local_file;
- }
- else
- {
- xfree (dummy);
- dummy = url_file_name (u);
- hstat.local_file = &dummy;
- }
- /* be honest about where we will save the file */
- if (local_file && opt.output_document)
- *local_file = HYPHENP (opt.output_document) ? NULL : xstrdup (opt.output_document);
- if (!opt.output_document)
- locf = *hstat.local_file;
- else
- locf = opt.output_document;
- }
- continue;
- case HOSTERR: case CONIMPOSSIBLE: case PROXERR: case AUTHFAILED:
- case SSLINITFAILED: case CONTNOTSUPPORTED:
- /* Fatal errors just return from the function. */
- free_hstat (&hstat);
- xfree_null (dummy);
- return err;
- case FWRITEERR: case FOPENERR:
- /* Another fatal error. */
- logputs (LOG_VERBOSE, "\n");
- logprintf (LOG_NOTQUIET, _("Cannot write to `%s' (%s).\n"),
- *hstat.local_file, strerror (errno));
- free_hstat (&hstat);
- xfree_null (dummy);
- return err;
- case CONSSLERR:
- /* Another fatal error. */
- logprintf (LOG_NOTQUIET, _("Unable to establish SSL connection.\n"));
- free_hstat (&hstat);
- xfree_null (dummy);
- return err;
- case NEWLOCATION:
- /* Return the new location to the caller. */
- if (!hstat.newloc)
- {
- logprintf (LOG_NOTQUIET,
- _("ERROR: Redirection (%d) without location.\n"),
- hstat.statcode);
- free_hstat (&hstat);
- xfree_null (dummy);
- return WRONGCODE;
- }
- free_hstat (&hstat);
- xfree_null (dummy);
- return NEWLOCATION;
- case RETRUNNEEDED:
- /* The file was already fully retrieved. */
- free_hstat (&hstat);
- xfree_null (dummy);
- return RETROK;
- 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 = url_string (u, 1);
- logprintf (LOG_NONVERBOSE, "%s:\n", hurl);
- xfree (hurl);
- }
- logprintf (LOG_NOTQUIET, _("%s ERROR %d: %s.\n"),
- tms, hstat.statcode, escnonprint (hstat.error));
- logputs (LOG_VERBOSE, "\n");
- free_hstat (&hstat);
- xfree_null (dummy);
- 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);
- free_hstat (&hstat);
- xfree_null (dummy);
- return RETROK;
- }
- else if (tml >= tmr)
- logprintf (LOG_VERBOSE, _("\
+ 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 (local_size));
- else
- logputs (LOG_VERBOSE,
- _("Remote file is newer, retrieving.\n"));
- }
- free_hstat (&hstat);
- continue;
- }
+ 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 (output_stream_regular)
- fl = opt.output_document;
- }
- else
- fl = *hstat.local_file;
- if (fl)
- touch (fl, tmr);
- }
- /* End of time-stamping section. */
-
- if (opt.spider)
- {
- logprintf (LOG_NOTQUIET, "%d %s\n\n", hstat.statcode,
- escnonprint (hstat.error));
- xfree_null (dummy);
- return RETROK;
- }
-
- tmrate = retr_rate (hstat.rd_size, 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 [%s/%s]\n\n"),
- tms, tmrate, locf,
- 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),
- locf, count);
- }
- ++opt.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, locf);
- else
- downloaded_file(FILE_DOWNLOADED_NORMALLY, locf);
-
- free_hstat (&hstat);
- xfree_null (dummy);
- 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 [%s]\n\n"),
- tms, tmrate, locf,
- 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),
- locf, count);
- }
- ++opt.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, locf);
- else
- downloaded_file(FILE_DOWNLOADED_NORMALLY, locf);
-
- free_hstat (&hstat);
- xfree_null (dummy);
- return RETROK;
- }
- 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);
- free_hstat (&hstat);
- continue;
- }
- else if (!opt.kill_longer) /* meaning we got more than expected */
- {
- logprintf (LOG_VERBOSE,
- _("%s (%s) - `%s' saved [%s/%s])\n\n"),
- tms, tmrate, locf,
- 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),
- locf, count);
- ++opt.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, locf);
- else
- downloaded_file(FILE_DOWNLOADED_NORMALLY, locf);
-
- free_hstat (&hstat);
- xfree_null (dummy);
- return RETROK;
- }
- else /* the same, but not accepted */
- {
- logprintf (LOG_VERBOSE,
- _("%s (%s) - Connection closed at byte %s/%s. "),
- tms, tmrate,
- number_to_static_string (hstat.len),
- number_to_static_string (hstat.contlen));
- printwhat (count, opt.ntry);
- free_hstat (&hstat);
- continue;
- }
- }
- else /* now 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),
- strerror (errno));
- printwhat (count, opt.ntry);
- free_hstat (&hstat);
- 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),
- strerror (errno));
- printwhat (count, opt.ntry);
- free_hstat (&hstat);
- 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 */
}
while (!opt.ntry || (count < opt.ntry));
- 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
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", /* rfc850+: Thu, 29-Jan-1998 22:12:57
- (post-y2k-rfc850; apparently google
- 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.) */
};
- int i;
+ 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';
+
+ setlocale (LC_TIME, "C");
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 garbage from the stack influencing strptime. */
+ tm to recalculate the date according to format. Zero it out
+ to prevent stack garbage from influencing strptime. */
xzero (t);
- /* Solaris strptime fails to recognize English month names in
- non-English locales, which we work around by not setting the
- LC_TIME category. Another way would be to temporarily set
- locale to C before invoking strptime, but that's slow and
- messy. GNU strptime does not have this problem because it
- recognizes English month names along with the local ones. */
-
if (check_end (strptime (time_string, time_formats[i], &t)))
- return mktime_from_utc (&t);
+ {
+ ret = timegm (&t);
+ break;
+ }
}
- /* All formats have failed. */
- return -1;
+ /* Restore the previous locale. */
+ if (savedlocale[0])
+ setlocale (LC_TIME, savedlocale);
+
+ return ret;
}
\f
/* Authorization support: We support three authorization schemes:
return concat_strings ("Basic ", t2, (char *) 0);
}
-#define SKIP_WS(x) do { \
- while (ISSPACE (*(x))) \
- ++(x); \
+#define SKIP_WS(x) do { \
+ while (c_isspace (*(x))) \
+ ++(x); \
} while (0)
#ifdef ENABLE_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 *ep;
- const char *cp = au;
-
- if (strncmp (cp, attr_name, strlen (attr_name)) == 0)
- {
- cp += strlen (attr_name);
- if (!*cp)
- return -1;
- SKIP_WS (cp);
- if (*cp != '=')
- return -1;
- if (!*++cp)
- return -1;
- SKIP_WS (cp);
- if (*cp != '\"')
- return -1;
- if (!*++cp)
- return -1;
- for (ep = cp; *ep && *ep != '\"'; ep++)
- ;
- if (!*ep)
- return -1;
- xfree_null (*ret);
- *ret = strdupdelim (cp, ep);
- return ep - au + 1;
- }
- else
- return 0;
-}
-
/* 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;
authorization header. See RFC2069 section 2.1.2. */
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;
-
- SKIP_WS (au);
+ size_t i;
+ size_t namelen = name.e - name.b;
for (i = 0; i < countof (options); i++)
- {
- int skip = extract_header_attr (au, options[i].name,
- options[i].variable);
- if (skip < 0)
- {
- xfree_null (realm);
- xfree_null (opaque);
- xfree_null (nonce);
- return NULL;
- }
- else if (skip)
- {
- au += skip;
- break;
- }
- }
- if (i == countof (options))
- {
- while (*au && *au != '=')
- au++;
- if (*au && *++au)
- {
- SKIP_WS (au);
- if (*au == '\"')
- {
- au++;
- while (*au && *au != '\"')
- au++;
- if (*au)
- au++;
- }
- }
- }
- while (*au && *au != ',')
- au++;
- if (*au)
- au++;
+ 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)
{
{
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) */
gen_md5_init (ctx);
/* RESPONSE_DIGEST = H(A1BUF ":" nonce ":" A2BUF) */
gen_md5_init (ctx);
- gen_md5_update (a1buf, MD5_HASHLEN * 2, 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 (a2buf, MD5_HASHLEN * 2, 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);
+ 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, "\"");
}
}
return res;
/* 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) >= STRSIZE (literal) \
- && 0 == strncasecmp (b, literal, STRSIZE (literal)) \
- && ((e) - (b) == STRSIZE (literal) \
- || ISSPACE (b[STRSIZE (literal)])))
-
-static int
+#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 STARTS ("Basic", hdrbeg, hdrend)
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, int *finished)
+ 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 (TOUPPER (*au))
+ switch (c_toupper (*au))
{
- case 'B': /* Basic */
- *finished = 1;
+ case 'B': /* Basic */
+ *finished = true;
return basic_authentication_encode (user, passwd);
#ifdef ENABLE_DIGEST
- case 'D': /* Digest */
- *finished = 1;
+ case 'D': /* Digest */
+ *finished = true;
return digest_authentication_encode (au, user, passwd, method, path);
#endif
#ifdef ENABLE_NTLM
- case 'N': /* NTLM */
+ case 'N': /* NTLM */
if (!ntlm_input (&pconn.ntlm, au))
- {
- *finished = 1;
- return NULL;
- }
+ {
+ *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. */
+ with values approved by known_authentication_scheme_p. */
abort ();
}
}
\f
+static void
+load_cookies (void)
+{
+ 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_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