2 Copyright (C) 2005 Free Software Foundation, Inc.
4 This file is part of GNU Wget.
6 GNU Wget is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 GNU Wget is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with Wget; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 In addition, as a special exception, the Free Software Foundation
21 gives permission to link the code of its release of Wget with the
22 OpenSSL project's "OpenSSL" library (or with modified versions of it
23 that use the same license as the "OpenSSL" library), and distribute
24 the linked executables. You must obey the GNU General Public License
25 in all respects for all of the code used other than "OpenSSL". If you
26 modify this file, you may extend this exception to your version of the
27 file, but you are not obligated to do so. If you do not wish to do
28 so, delete this exception statement from your version. */
34 #include <sys/types.h>
45 #if TIME_WITH_SYS_TIME
46 # include <sys/time.h>
50 # include <sys/time.h>
67 # include "gen_sslfunc.h"
70 # include "http-ntlm.h"
78 extern char *version_string;
79 extern LARGE_INT total_downloaded_bytes;
81 extern FILE *output_stream;
82 extern int output_stream_regular;
85 # define MIN(x, y) ((x) > (y) ? (y) : (x))
89 static int cookies_loaded_p;
90 static struct cookie_jar *wget_cookie_jar;
92 #define TEXTHTML_S "text/html"
93 #define TEXTXHTML_S "application/xhtml+xml"
95 /* Some status code validation macros: */
96 #define H_20X(x) (((x) >= 200) && ((x) < 300))
97 #define H_PARTIAL(x) ((x) == HTTP_STATUS_PARTIAL_CONTENTS)
98 #define H_REDIRECTED(x) ((x) == HTTP_STATUS_MOVED_PERMANENTLY \
99 || (x) == HTTP_STATUS_MOVED_TEMPORARILY \
100 || (x) == HTTP_STATUS_SEE_OTHER \
101 || (x) == HTTP_STATUS_TEMPORARY_REDIRECT)
103 /* HTTP/1.0 status codes from RFC1945, provided for reference. */
104 /* Successful 2xx. */
105 #define HTTP_STATUS_OK 200
106 #define HTTP_STATUS_CREATED 201
107 #define HTTP_STATUS_ACCEPTED 202
108 #define HTTP_STATUS_NO_CONTENT 204
109 #define HTTP_STATUS_PARTIAL_CONTENTS 206
111 /* Redirection 3xx. */
112 #define HTTP_STATUS_MULTIPLE_CHOICES 300
113 #define HTTP_STATUS_MOVED_PERMANENTLY 301
114 #define HTTP_STATUS_MOVED_TEMPORARILY 302
115 #define HTTP_STATUS_SEE_OTHER 303 /* from HTTP/1.1 */
116 #define HTTP_STATUS_NOT_MODIFIED 304
117 #define HTTP_STATUS_TEMPORARY_REDIRECT 307 /* from HTTP/1.1 */
119 /* Client error 4xx. */
120 #define HTTP_STATUS_BAD_REQUEST 400
121 #define HTTP_STATUS_UNAUTHORIZED 401
122 #define HTTP_STATUS_FORBIDDEN 403
123 #define HTTP_STATUS_NOT_FOUND 404
124 #define HTTP_STATUS_RANGE_NOT_SATISFIABLE 416
126 /* Server errors 5xx. */
127 #define HTTP_STATUS_INTERNAL 500
128 #define HTTP_STATUS_NOT_IMPLEMENTED 501
129 #define HTTP_STATUS_BAD_GATEWAY 502
130 #define HTTP_STATUS_UNAVAILABLE 503
133 rel_none, rel_name, rel_value, rel_both
140 struct request_header {
142 enum rp release_policy;
144 int hcount, hcapacity;
147 /* Create a new, empty request. At least request_set_method must be
148 called before the request can be used. */
150 static struct request *
153 struct request *req = xnew0 (struct request);
155 req->headers = xnew_array (struct request_header, req->hcapacity);
159 /* Set the request's method and its arguments. METH should be a
160 literal string (or it should outlive the request) because it will
161 not be freed. ARG will be freed by request_free. */
164 request_set_method (struct request *req, const char *meth, char *arg)
170 /* Return the method string passed with the last call to
171 request_set_method. */
174 request_method (const struct request *req)
179 /* Free one header according to the release policy specified with
180 request_set_header. */
183 release_header (struct request_header *hdr)
185 switch (hdr->release_policy)
202 /* Set the request named NAME to VALUE. Specifically, this means that
203 a "NAME: VALUE\r\n" header line will be used in the request. If a
204 header with the same name previously existed in the request, its
205 value will be replaced by this one.
207 RELEASE_POLICY determines whether NAME and VALUE should be released
208 (freed) with request_free. Allowed values are:
210 - rel_none - don't free NAME or VALUE
211 - rel_name - free NAME when done
212 - rel_value - free VALUE when done
213 - rel_both - free both NAME and VALUE when done
215 Setting release policy is useful when arguments come from different
216 sources. For example:
218 // Don't free literal strings!
219 request_set_header (req, "Pragma", "no-cache", rel_none);
221 // Don't free a global variable, we'll need it later.
222 request_set_header (req, "Referer", opt.referer, rel_none);
224 // Value freshly allocated, free it when done.
225 request_set_header (req, "Range",
226 aprintf ("bytes=%s-", number_to_static_string (hs->restval)),
231 request_set_header (struct request *req, char *name, char *value,
232 enum rp release_policy)
234 struct request_header *hdr;
238 /* A NULL value is a no-op; if freeing the name is requested,
239 free it now to avoid leaks. */
240 if (release_policy == rel_name || release_policy == rel_both)
244 for (i = 0; i < req->hcount; i++)
246 hdr = &req->headers[i];
247 if (0 == strcasecmp (name, hdr->name))
249 /* Replace existing header. */
250 release_header (hdr);
253 hdr->release_policy = release_policy;
258 /* Install new header. */
260 if (req->hcount >= req->hcount)
262 req->hcapacity <<= 1;
263 req->headers = xrealloc (req->headers,
264 req->hcapacity * sizeof (struct request_header));
266 hdr = &req->headers[req->hcount++];
269 hdr->release_policy = release_policy;
272 /* Like request_set_header, but sets the whole header line, as
273 provided by the user using the `--header' option. For example,
274 request_set_user_header (req, "Foo: bar") works just like
275 request_set_header (req, "Foo", "bar"). */
278 request_set_user_header (struct request *req, const char *header)
281 const char *p = strchr (header, ':');
284 BOUNDED_TO_ALLOCA (header, p, name);
288 request_set_header (req, xstrdup (name), (char *) p, rel_name);
291 #define APPEND(p, str) do { \
292 int A_len = strlen (str); \
293 memcpy (p, str, A_len); \
297 /* Construct the request and write it to FD using fd_write. */
300 request_send (const struct request *req, int fd)
302 char *request_string, *p;
303 int i, size, write_error;
305 /* Count the request size. */
308 /* METHOD " " ARG " " "HTTP/1.0" "\r\n" */
309 size += strlen (req->method) + 1 + strlen (req->arg) + 1 + 8 + 2;
311 for (i = 0; i < req->hcount; i++)
313 struct request_header *hdr = &req->headers[i];
314 /* NAME ": " VALUE "\r\n" */
315 size += strlen (hdr->name) + 2 + strlen (hdr->value) + 2;
321 p = request_string = alloca_array (char, size);
323 /* Generate the request. */
325 APPEND (p, req->method); *p++ = ' ';
326 APPEND (p, req->arg); *p++ = ' ';
327 memcpy (p, "HTTP/1.0\r\n", 10); p += 10;
329 for (i = 0; i < req->hcount; i++)
331 struct request_header *hdr = &req->headers[i];
332 APPEND (p, hdr->name);
333 *p++ = ':', *p++ = ' ';
334 APPEND (p, hdr->value);
335 *p++ = '\r', *p++ = '\n';
338 *p++ = '\r', *p++ = '\n', *p++ = '\0';
339 assert (p - request_string == size);
343 DEBUGP (("\n---request begin---\n%s---request end---\n", request_string));
345 /* Send the request to the server. */
347 write_error = fd_write (fd, request_string, size - 1, -1);
349 logprintf (LOG_VERBOSE, _("Failed writing HTTP request: %s.\n"),
354 /* Release the resources used by REQ. */
357 request_free (struct request *req)
360 xfree_null (req->arg);
361 for (i = 0; i < req->hcount; i++)
362 release_header (&req->headers[i]);
363 xfree_null (req->headers);
367 /* Send the contents of FILE_NAME to SOCK. Make sure that exactly
368 PROMISED_SIZE bytes are sent over the wire -- if the file is
369 longer, read only that much; if the file is shorter, report an error. */
372 post_file (int sock, const char *file_name, wgint promised_size)
374 static char chunk[8192];
379 DEBUGP (("[writing POST file %s ... ", file_name));
381 fp = fopen (file_name, "rb");
384 while (!feof (fp) && written < promised_size)
387 int length = fread (chunk, 1, sizeof (chunk), fp);
390 towrite = MIN (promised_size - written, length);
391 write_error = fd_write (sock, chunk, towrite, -1);
401 /* If we've written less than was promised, report a (probably
402 nonsensical) error rather than break the promise. */
403 if (written < promised_size)
409 assert (written == promised_size);
410 DEBUGP (("done]\n"));
415 response_head_terminator (const char *hunk, int oldlen, int peeklen)
417 const char *start, *end;
419 /* If at first peek, verify whether HUNK starts with "HTTP". If
420 not, this is a HTTP/0.9 request and we must bail out without
422 if (oldlen == 0 && 0 != memcmp (hunk, "HTTP", MIN (peeklen, 4)))
428 start = hunk + oldlen - 4;
429 end = hunk + oldlen + peeklen;
431 for (; start < end - 1; start++)
438 if (start[1] == '\n')
444 /* The maximum size of a single HTTP response we care to read. This
445 is not meant to impose an arbitrary limit, but to protect the user
446 from Wget slurping up available memory upon encountering malicious
447 or buggy server output. Define it to 0 to remove the limit. */
449 #define HTTP_RESPONSE_MAX_SIZE 65536
451 /* Read the HTTP request head from FD and return it. The error
452 conditions are the same as with fd_read_hunk.
454 To support HTTP/0.9 responses, this function tries to make sure
455 that the data begins with "HTTP". If this is not the case, no data
456 is read and an empty request is returned, so that the remaining
457 data can be treated as body. */
460 read_http_response_head (int fd)
462 return fd_read_hunk (fd, response_head_terminator, 512,
463 HTTP_RESPONSE_MAX_SIZE);
467 /* The response data. */
470 /* The array of pointers that indicate where each header starts.
471 For example, given this HTTP response:
478 The headers are located like this:
480 "HTTP/1.0 200 Ok\r\nDescription: some\r\n text\r\nEtag: x\r\n\r\n"
482 headers[0] headers[1] headers[2] headers[3]
484 I.e. headers[0] points to the beginning of the request,
485 headers[1] points to the end of the first header and the
486 beginning of the second one, etc. */
488 const char **headers;
491 /* Create a new response object from the text of the HTTP response,
492 available in HEAD. That text is automatically split into
493 constituent header lines for fast retrieval using
496 static struct response *
497 resp_new (const char *head)
502 struct response *resp = xnew0 (struct response);
507 /* Empty head means that we're dealing with a headerless
508 (HTTP/0.9) response. In that case, don't set HEADERS at
513 /* Split HEAD into header lines, so that resp_header_* functions
514 don't need to do this over and over again. */
520 DO_REALLOC (resp->headers, size, count + 1, const char *);
521 resp->headers[count++] = hdr;
523 /* Break upon encountering an empty line. */
524 if (!hdr[0] || (hdr[0] == '\r' && hdr[1] == '\n') || hdr[0] == '\n')
527 /* Find the end of HDR, including continuations. */
530 const char *end = strchr (hdr, '\n');
536 while (*hdr == ' ' || *hdr == '\t');
538 DO_REALLOC (resp->headers, size, count + 1, const char *);
539 resp->headers[count] = NULL;
544 /* Locate the header named NAME in the request data, starting with
545 position START. This allows the code to loop through the request
546 data, filtering for all requests of a given name. Returns the
547 found position, or -1 for failure. The code that uses this
548 function typically looks like this:
550 for (pos = 0; (pos = resp_header_locate (...)) != -1; pos++)
551 ... do something with header ...
553 If you only care about one header, use resp_header_get instead of
557 resp_header_locate (const struct response *resp, const char *name, int start,
558 const char **begptr, const char **endptr)
561 const char **headers = resp->headers;
564 if (!headers || !headers[1])
567 name_len = strlen (name);
573 for (; headers[i + 1]; i++)
575 const char *b = headers[i];
576 const char *e = headers[i + 1];
578 && b[name_len] == ':'
579 && 0 == strncasecmp (b, name, name_len))
582 while (b < e && ISSPACE (*b))
584 while (b < e && ISSPACE (e[-1]))
594 /* Find and retrieve the header named NAME in the request data. If
595 found, set *BEGPTR to its starting, and *ENDPTR to its ending
596 position, and return 1. Otherwise return 0.
598 This function is used as a building block for resp_header_copy
599 and resp_header_strdup. */
602 resp_header_get (const struct response *resp, const char *name,
603 const char **begptr, const char **endptr)
605 int pos = resp_header_locate (resp, name, 0, begptr, endptr);
609 /* Copy the response header named NAME to buffer BUF, no longer than
610 BUFSIZE (BUFSIZE includes the terminating 0). If the header
611 exists, 1 is returned, otherwise 0. If there should be no limit on
612 the size of the header, use resp_header_strdup instead.
614 If BUFSIZE is 0, no data is copied, but the boolean indication of
615 whether the header is present is still returned. */
618 resp_header_copy (const struct response *resp, const char *name,
619 char *buf, int bufsize)
622 if (!resp_header_get (resp, name, &b, &e))
626 int len = MIN (e - b, bufsize - 1);
627 memcpy (buf, b, len);
633 /* Return the value of header named NAME in RESP, allocated with
634 malloc. If such a header does not exist in RESP, return NULL. */
637 resp_header_strdup (const struct response *resp, const char *name)
640 if (!resp_header_get (resp, name, &b, &e))
642 return strdupdelim (b, e);
645 /* Parse the HTTP status line, which is of format:
647 HTTP-Version SP Status-Code SP Reason-Phrase
649 The function returns the status-code, or -1 if the status line
650 appears malformed. The pointer to "reason-phrase" message is
651 returned in *MESSAGE. */
654 resp_status (const struct response *resp, char **message)
661 /* For a HTTP/0.9 response, assume status 200. */
663 *message = xstrdup (_("No headers, assuming HTTP/0.9"));
667 p = resp->headers[0];
668 end = resp->headers[1];
674 if (end - p < 4 || 0 != strncmp (p, "HTTP", 4))
678 /* Match the HTTP version. This is optional because Gnutella
679 servers have been reported to not specify HTTP version. */
680 if (p < end && *p == '/')
683 while (p < end && ISDIGIT (*p))
685 if (p < end && *p == '.')
687 while (p < end && ISDIGIT (*p))
691 while (p < end && ISSPACE (*p))
693 if (end - p < 3 || !ISDIGIT (p[0]) || !ISDIGIT (p[1]) || !ISDIGIT (p[2]))
696 status = 100 * (p[0] - '0') + 10 * (p[1] - '0') + (p[2] - '0');
701 while (p < end && ISSPACE (*p))
703 while (p < end && ISSPACE (end[-1]))
705 *message = strdupdelim (p, end);
711 /* Release the resources used by RESP. */
714 resp_free (struct response *resp)
716 xfree_null (resp->headers);
720 /* Print the server response, line by line, omitting the trailing CRLF
721 from individual header lines, and prefixed with PREFIX. */
724 print_server_response (const struct response *resp, const char *prefix)
729 for (i = 0; resp->headers[i + 1]; i++)
731 const char *b = resp->headers[i];
732 const char *e = resp->headers[i + 1];
734 if (b < e && e[-1] == '\n')
736 if (b < e && e[-1] == '\r')
738 /* This is safe even on printfs with broken handling of "%.<n>s"
739 because resp->headers ends with \0. */
740 logprintf (LOG_VERBOSE, "%s%.*s\n", prefix, e - b, b);
744 /* Parse the `Content-Range' header and extract the information it
745 contains. Returns 1 if successful, -1 otherwise. */
747 parse_content_range (const char *hdr, wgint *first_byte_ptr,
748 wgint *last_byte_ptr, wgint *entity_length_ptr)
752 /* Ancient versions of Netscape proxy server, presumably predating
753 rfc2068, sent out `Content-Range' without the "bytes"
755 if (!strncasecmp (hdr, "bytes", 5))
758 /* "JavaWebServer/1.1.1" sends "bytes: x-y/z", contrary to the
762 while (ISSPACE (*hdr))
769 for (num = 0; ISDIGIT (*hdr); hdr++)
770 num = 10 * num + (*hdr - '0');
771 if (*hdr != '-' || !ISDIGIT (*(hdr + 1)))
773 *first_byte_ptr = num;
775 for (num = 0; ISDIGIT (*hdr); hdr++)
776 num = 10 * num + (*hdr - '0');
777 if (*hdr != '/' || !ISDIGIT (*(hdr + 1)))
779 *last_byte_ptr = num;
781 for (num = 0; ISDIGIT (*hdr); hdr++)
782 num = 10 * num + (*hdr - '0');
783 *entity_length_ptr = num;
787 /* Read the body of the request, but don't store it anywhere and don't
788 display a progress gauge. This is useful for reading the bodies of
789 administrative responses to which we will soon issue another
790 request. The response is not useful to the user, but reading it
791 allows us to continue using the same connection to the server.
793 If reading fails, 0 is returned, non-zero otherwise. In debug
794 mode, the body is displayed for debugging purposes. */
797 skip_short_body (int fd, wgint contlen)
800 SKIP_SIZE = 512, /* size of the download buffer */
801 SKIP_THRESHOLD = 4096 /* the largest size we read */
803 char dlbuf[SKIP_SIZE + 1];
804 dlbuf[SKIP_SIZE] = '\0'; /* so DEBUGP can safely print it */
806 /* We shouldn't get here with unknown contlen. (This will change
807 with HTTP/1.1, which supports "chunked" transfer.) */
808 assert (contlen != -1);
810 /* If the body is too large, it makes more sense to simply close the
811 connection than to try to read the body. */
812 if (contlen > SKIP_THRESHOLD)
815 DEBUGP (("Skipping %s bytes of body: [", number_to_static_string (contlen)));
819 int ret = fd_read (fd, dlbuf, MIN (contlen, SKIP_SIZE), -1);
822 /* Don't normally report the error since this is an
823 optimization that should be invisible to the user. */
824 DEBUGP (("] aborting (%s).\n",
825 ret < 0 ? strerror (errno) : "EOF received"));
829 /* Safe even if %.*s bogusly expects terminating \0 because
830 we've zero-terminated dlbuf above. */
831 DEBUGP (("%.*s", ret, dlbuf));
834 DEBUGP (("] done.\n"));
838 /* Persistent connections. Currently, we cache the most recently used
839 connection as persistent, provided that the HTTP server agrees to
840 make it such. The persistence data is stored in the variables
841 below. Ideally, it should be possible to cache an arbitrary fixed
842 number of these connections. */
844 /* Whether a persistent connection is active. */
845 static int pconn_active;
848 /* The socket of the connection. */
851 /* Host and port of the currently active persistent connection. */
855 /* Whether a ssl handshake has occoured on this connection. */
859 /* NTLM data of the current connection. */
860 struct ntlmdata ntlm;
864 /* Mark the persistent connection as invalid and free the resources it
865 uses. This is used by the CLOSE_* macros after they forcefully
866 close a registered persistent connection. */
869 invalidate_persistent (void)
871 DEBUGP (("Disabling further reuse of socket %d.\n", pconn.socket));
873 fd_close (pconn.socket);
878 /* Register FD, which should be a TCP/IP connection to HOST:PORT, as
879 persistent. This will enable someone to use the same connection
880 later. In the context of HTTP, this must be called only AFTER the
881 response has been received and the server has promised that the
882 connection will remain alive.
884 If a previous connection was persistent, it is closed. */
887 register_persistent (const char *host, int port, int fd, int ssl)
891 if (pconn.socket == fd)
893 /* The connection FD is already registered. */
898 /* The old persistent connection is still active; close it
899 first. This situation arises whenever a persistent
900 connection exists, but we then connect to a different
901 host, and try to register a persistent connection to that
903 invalidate_persistent ();
909 pconn.host = xstrdup (host);
913 DEBUGP (("Registered socket %d for persistent reuse.\n", fd));
916 /* Return non-zero if a persistent connection is available for
917 connecting to HOST:PORT. */
920 persistent_available_p (const char *host, int port, int ssl,
921 int *host_lookup_failed)
923 /* First, check whether a persistent connection is active at all. */
927 /* If we want SSL and the last connection wasn't or vice versa,
928 don't use it. Checking for host and port is not enough because
929 HTTP and HTTPS can apparently coexist on the same port. */
930 if (ssl != pconn.ssl)
933 /* If we're not connecting to the same port, we're not interested. */
934 if (port != pconn.port)
937 /* If the host is the same, we're in business. If not, there is
938 still hope -- read below. */
939 if (0 != strcasecmp (host, pconn.host))
941 /* If pconn.socket is already talking to HOST, we needn't
942 reconnect. This happens often when both sites are virtual
943 hosts distinguished only by name and served by the same
944 network interface, and hence the same web server (possibly
945 set up by the ISP and serving many different web sites).
946 This admittedly non-standard optimization does not contradict
947 HTTP and works well with popular server software. */
951 struct address_list *al;
954 /* Don't try to talk to two different SSL sites over the same
955 secure connection! (Besides, it's not clear if name-based
956 virtual hosting is even possible with SSL.) */
959 /* If pconn.socket's peer is one of the IP addresses HOST
960 resolves to, pconn.socket is for all intents and purposes
961 already talking to HOST. */
963 if (!socket_ip_address (pconn.socket, &ip, ENDPOINT_PEER))
965 /* Can't get the peer's address -- something must be very
966 wrong with the connection. */
967 invalidate_persistent ();
970 al = lookup_host (host, 0);
973 *host_lookup_failed = 1;
977 found = address_list_contains (al, &ip);
978 address_list_release (al);
983 /* The persistent connection's peer address was found among the
984 addresses HOST resolved to; therefore, pconn.sock is in fact
985 already talking to HOST -- no need to reconnect. */
988 /* Finally, check whether the connection is still open. This is
989 important because most server implement a liberal (short) timeout
990 on persistent connections. Wget can of course always reconnect
991 if the connection doesn't work out, but it's nicer to know in
992 advance. This test is a logical followup of the first test, but
993 is "expensive" and therefore placed at the end of the list. */
995 if (!test_socket_open (pconn.socket))
997 /* Oops, the socket is no longer open. Now that we know that,
998 let's invalidate the persistent connection before returning
1000 invalidate_persistent ();
1007 /* The idea behind these two CLOSE macros is to distinguish between
1008 two cases: one when the job we've been doing is finished, and we
1009 want to close the connection and leave, and two when something is
1010 seriously wrong and we're closing the connection as part of
1013 In case of keep_alive, CLOSE_FINISH should leave the connection
1014 open, while CLOSE_INVALIDATE should still close it.
1016 Note that the semantics of the flag `keep_alive' is "this
1017 connection *will* be reused (the server has promised not to close
1018 the connection once we're done)", while the semantics of
1019 `pc_active_p && (fd) == pc_last_fd' is "we're *now* using an
1020 active, registered connection". */
1022 #define CLOSE_FINISH(fd) do { \
1025 if (pconn_active && (fd) == pconn.socket) \
1026 invalidate_persistent (); \
1035 #define CLOSE_INVALIDATE(fd) do { \
1036 if (pconn_active && (fd) == pconn.socket) \
1037 invalidate_persistent (); \
1045 wgint len; /* received length */
1046 wgint contlen; /* expected length */
1047 wgint restval; /* the restart value */
1048 int res; /* the result of last read */
1049 char *newloc; /* new location (redirection) */
1050 char *remote_time; /* remote time-stamp string */
1051 char *error; /* textual HTTP error */
1052 int statcode; /* status code */
1053 wgint rd_size; /* amount of data read from socket */
1054 double dltime; /* time it took to download the data */
1055 const char *referer; /* value of the referer header. */
1056 char **local_file; /* local file. */
1060 free_hstat (struct http_stat *hs)
1062 xfree_null (hs->newloc);
1063 xfree_null (hs->remote_time);
1064 xfree_null (hs->error);
1066 /* Guard against being called twice. */
1068 hs->remote_time = NULL;
1072 static char *create_authorization_line PARAMS ((const char *, const char *,
1073 const char *, const char *,
1075 static char *basic_authentication_encode PARAMS ((const char *, const char *));
1076 static int known_authentication_scheme_p PARAMS ((const char *));
1078 time_t http_atotm PARAMS ((const char *));
1080 #define BEGINS_WITH(line, string_constant) \
1081 (!strncasecmp (line, string_constant, sizeof (string_constant) - 1) \
1082 && (ISSPACE (line[sizeof (string_constant) - 1]) \
1083 || !line[sizeof (string_constant) - 1]))
1085 /* Retrieve a document through HTTP protocol. It recognizes status
1086 code, and correctly handles redirections. It closes the network
1087 socket. If it receives an error from the functions below it, it
1088 will print it if there is enough information to do so (almost
1089 always), returning the error to the caller (i.e. http_loop).
1091 Various HTTP parameters are stored to hs.
1093 If PROXY is non-NULL, the connection will be made to the proxy
1094 server, and u->url will be requested. */
1096 gethttp (struct url *u, struct http_stat *hs, int *dt, struct url *proxy)
1098 struct request *req;
1101 char *user, *passwd;
1105 wgint contlen, contrange;
1112 /* Whether authorization has been already tried. */
1113 int auth_tried_already;
1115 /* Whether our connection to the remote host is through SSL. */
1119 struct response *resp;
1123 /* Whether this connection will be kept alive after the HTTP request
1127 /* Whether keep-alive should be inhibited.
1129 RFC 2068 requests that 1.0 clients not send keep-alive requests
1130 to proxies. This is because many 1.0 proxies do not interpret
1131 the Connection header and transfer it to the remote server,
1132 causing it to not close the connection and leave both the proxy
1133 and the client hanging. */
1134 int inhibit_keep_alive =
1135 !opt.http_keep_alive || opt.ignore_length || proxy != NULL;
1137 /* Headers sent when using POST. */
1138 wgint post_data_size = 0;
1140 int host_lookup_failed = 0;
1143 if (u->scheme == SCHEME_HTTPS)
1145 /* Initialize the SSL context. After this has once been done,
1146 it becomes a no-op. */
1147 switch (ssl_init ())
1149 case SSLERRCTXCREATE:
1151 logprintf (LOG_NOTQUIET, _("Failed to set up an SSL context\n"));
1152 return SSLERRCTXCREATE;
1153 case SSLERRCERTFILE:
1154 /* try without certfile */
1155 logprintf (LOG_NOTQUIET,
1156 _("Failed to load certificates from %s\n"),
1158 logprintf (LOG_NOTQUIET,
1159 _("Trying without the specified certificate\n"));
1162 logprintf (LOG_NOTQUIET,
1163 _("Failed to get certificate key from %s\n"),
1165 logprintf (LOG_NOTQUIET,
1166 _("Trying without the specified certificate\n"));
1172 #endif /* HAVE_SSL */
1174 if (!(*dt & HEAD_ONLY))
1175 /* If we're doing a GET on the URL, as opposed to just a HEAD, we need to
1176 know the local filename so we can save to it. */
1177 assert (*hs->local_file != NULL);
1179 auth_tried_already = 0;
1181 /* Initialize certain elements of struct http_stat. */
1186 hs->remote_time = NULL;
1191 /* Prepare the request to send. */
1193 req = request_new ();
1195 const char *meth = "GET";
1196 if (*dt & HEAD_ONLY)
1198 else if (opt.post_file_name || opt.post_data)
1200 /* Use the full path, i.e. one that includes the leading slash and
1201 the query string. E.g. if u->path is "foo/bar" and u->query is
1202 "param=value", full_path will be "/foo/bar?param=value". */
1203 request_set_method (req, meth,
1204 proxy ? xstrdup (u->url) : url_full_path (u));
1207 request_set_header (req, "Referer", (char *) hs->referer, rel_none);
1208 if (*dt & SEND_NOCACHE)
1209 request_set_header (req, "Pragma", "no-cache", rel_none);
1211 request_set_header (req, "Range",
1212 aprintf ("bytes=%s-",
1213 number_to_static_string (hs->restval)),
1216 request_set_header (req, "User-Agent", opt.useragent, rel_none);
1218 request_set_header (req, "User-Agent",
1219 aprintf ("Wget/%s", version_string), rel_value);
1220 request_set_header (req, "Accept", "*/*", rel_none);
1222 /* Find the username and password for authentication. */
1225 search_netrc (u->host, (const char **)&user, (const char **)&passwd, 0);
1226 user = user ? user : opt.http_user;
1227 passwd = passwd ? passwd : opt.http_passwd;
1231 /* We have the username and the password, but haven't tried
1232 any authorization yet. Let's see if the "Basic" method
1233 works. If not, we'll come back here and construct a
1234 proper authorization method with the right challenges.
1236 If we didn't employ this kind of logic, every URL that
1237 requires authorization would have to be processed twice,
1238 which is very suboptimal and generates a bunch of false
1239 "unauthorized" errors in the server log.
1241 #### But this logic also has a serious problem when used
1242 with stronger authentications: we *first* transmit the
1243 username and the password in clear text, and *then* attempt a
1244 stronger authentication scheme. That cannot be right! We
1245 are only fortunate that almost everyone still uses the
1246 `Basic' scheme anyway.
1248 There should be an option to prevent this from happening, for
1249 those who use strong authentication schemes and value their
1251 request_set_header (req, "Authorization",
1252 basic_authentication_encode (user, passwd),
1259 char *proxy_user, *proxy_passwd;
1260 /* For normal username and password, URL components override
1261 command-line/wgetrc parameters. With proxy
1262 authentication, it's the reverse, because proxy URLs are
1263 normally the "permanent" ones, so command-line args
1264 should take precedence. */
1265 if (opt.proxy_user && opt.proxy_passwd)
1267 proxy_user = opt.proxy_user;
1268 proxy_passwd = opt.proxy_passwd;
1272 proxy_user = proxy->user;
1273 proxy_passwd = proxy->passwd;
1275 /* #### This does not appear right. Can't the proxy request,
1276 say, `Digest' authentication? */
1277 if (proxy_user && proxy_passwd)
1278 proxyauth = basic_authentication_encode (proxy_user, proxy_passwd);
1280 /* If we're using a proxy, we will be connecting to the proxy
1284 /* Proxy authorization over SSL is handled below. */
1286 if (u->scheme != SCHEME_HTTPS)
1288 request_set_header (req, "Proxy-Authorization", proxyauth, rel_value);
1292 /* Whether we need to print the host header with braces around
1293 host, e.g. "Host: [3ffe:8100:200:2::2]:1234" instead of the
1294 usual "Host: symbolic-name:1234". */
1295 int squares = strchr (u->host, ':') != NULL;
1296 if (u->port == scheme_default_port (u->scheme))
1297 request_set_header (req, "Host",
1298 aprintf (squares ? "[%s]" : "%s", u->host),
1301 request_set_header (req, "Host",
1302 aprintf (squares ? "[%s]:%d" : "%s:%d",
1307 if (!inhibit_keep_alive)
1308 request_set_header (req, "Connection", "Keep-Alive", rel_none);
1311 request_set_header (req, "Cookie",
1312 cookie_header (wget_cookie_jar,
1313 u->host, u->port, u->path,
1315 u->scheme == SCHEME_HTTPS
1322 if (opt.post_data || opt.post_file_name)
1324 request_set_header (req, "Content-Type",
1325 "application/x-www-form-urlencoded", rel_none);
1327 post_data_size = strlen (opt.post_data);
1330 post_data_size = file_size (opt.post_file_name);
1331 if (post_data_size == -1)
1333 logprintf (LOG_NOTQUIET, "POST data file missing: %s\n",
1334 opt.post_file_name);
1338 request_set_header (req, "Content-Length",
1339 xstrdup (number_to_static_string (post_data_size)),
1343 /* Add the user headers. */
1344 if (opt.user_headers)
1347 for (i = 0; opt.user_headers[i]; i++)
1348 request_set_user_header (req, opt.user_headers[i]);
1352 /* We need to come back here when the initial attempt to retrieve
1353 without authorization header fails. (Expected to happen at least
1354 for the Digest authorization scheme.) */
1358 /* Establish the connection. */
1360 if (!inhibit_keep_alive)
1362 /* Look for a persistent connection to target host, unless a
1363 proxy is used. The exception is when SSL is in use, in which
1364 case the proxy is nothing but a passthrough to the target
1365 host, registered as a connection to the latter. */
1366 struct url *relevant = conn;
1368 if (u->scheme == SCHEME_HTTPS)
1372 if (persistent_available_p (relevant->host, relevant->port,
1374 relevant->scheme == SCHEME_HTTPS,
1378 &host_lookup_failed))
1380 sock = pconn.socket;
1381 using_ssl = pconn.ssl;
1382 logprintf (LOG_VERBOSE, _("Reusing existing connection to %s:%d.\n"),
1383 escnonprint (pconn.host), pconn.port);
1384 DEBUGP (("Reusing fd %d.\n", sock));
1390 /* In its current implementation, persistent_available_p will
1391 look up conn->host in some cases. If that lookup failed, we
1392 don't need to bother with connect_to_host. */
1393 if (host_lookup_failed)
1399 sock = connect_to_host (conn->host, conn->port);
1408 return (retryable_socket_connect_error (errno)
1409 ? CONERROR : CONIMPOSSIBLE);
1413 if (proxy && u->scheme == SCHEME_HTTPS)
1415 /* When requesting SSL URLs through proxies, use the
1416 CONNECT method to request passthrough. */
1417 struct request *connreq = request_new ();
1418 request_set_method (connreq, "CONNECT",
1419 aprintf ("%s:%d", u->host, u->port));
1422 request_set_header (connreq, "Proxy-Authorization",
1423 proxyauth, rel_value);
1424 /* Now that PROXYAUTH is part of the CONNECT request,
1425 zero it out so we don't send proxy authorization with
1426 the regular request below. */
1430 write_error = request_send (connreq, sock);
1431 request_free (connreq);
1432 if (write_error < 0)
1434 logprintf (LOG_VERBOSE, _("Failed writing to proxy: %s.\n"),
1436 CLOSE_INVALIDATE (sock);
1440 head = read_http_response_head (sock);
1443 logprintf (LOG_VERBOSE, _("Failed reading proxy response: %s\n"),
1445 CLOSE_INVALIDATE (sock);
1454 DEBUGP (("proxy responded with: [%s]\n", head));
1456 resp = resp_new (head);
1457 statcode = resp_status (resp, &message);
1460 if (statcode != 200)
1463 logprintf (LOG_NOTQUIET, _("Proxy tunneling failed: %s"),
1464 message ? escnonprint (message) : "?");
1465 xfree_null (message);
1468 xfree_null (message);
1470 /* SOCK is now *really* connected to u->host, so update CONN
1471 to reflect this. That way register_persistent will
1472 register SOCK as being connected to u->host:u->port. */
1476 if (conn->scheme == SCHEME_HTTPS)
1478 if (!ssl_connect (sock))
1485 #endif /* HAVE_SSL */
1488 /* Send the request to server. */
1489 write_error = request_send (req, sock);
1491 if (write_error >= 0)
1495 DEBUGP (("[POST data: %s]\n", opt.post_data));
1496 write_error = fd_write (sock, opt.post_data, post_data_size, -1);
1498 else if (opt.post_file_name && post_data_size != 0)
1499 write_error = post_file (sock, opt.post_file_name, post_data_size);
1502 if (write_error < 0)
1504 logprintf (LOG_VERBOSE, _("Failed writing HTTP request: %s.\n"),
1506 CLOSE_INVALIDATE (sock);
1510 logprintf (LOG_VERBOSE, _("%s request sent, awaiting response... "),
1511 proxy ? "Proxy" : "HTTP");
1516 head = read_http_response_head (sock);
1521 logputs (LOG_NOTQUIET, _("No data received.\n"));
1522 CLOSE_INVALIDATE (sock);
1528 logprintf (LOG_NOTQUIET, _("Read error (%s) in headers.\n"),
1530 CLOSE_INVALIDATE (sock);
1535 DEBUGP (("\n---response begin---\n%s---response end---\n", head));
1537 resp = resp_new (head);
1539 /* Check for status line. */
1541 statcode = resp_status (resp, &message);
1542 if (!opt.server_response)
1543 logprintf (LOG_VERBOSE, "%2d %s\n", statcode,
1544 message ? escnonprint (message) : "");
1547 logprintf (LOG_VERBOSE, "\n");
1548 print_server_response (resp, " ");
1551 if (!opt.ignore_length
1552 && resp_header_copy (resp, "Content-Length", hdrval, sizeof (hdrval)))
1556 parsed = str_to_wgint (hdrval, NULL, 10);
1557 if (parsed == WGINT_MAX && errno == ERANGE)
1559 #### If Content-Length is out of range, it most likely
1560 means that the file is larger than 2G and that we're
1561 compiled without LFS. In that case we should probably
1562 refuse to even attempt to download the file. */
1568 /* Check for keep-alive related responses. */
1569 if (!inhibit_keep_alive && contlen != -1)
1571 if (resp_header_copy (resp, "Keep-Alive", NULL, 0))
1573 else if (resp_header_copy (resp, "Connection", hdrval, sizeof (hdrval)))
1575 if (0 == strcasecmp (hdrval, "Keep-Alive"))
1580 /* The server has promised that it will not close the connection
1581 when we're done. This means that we can register it. */
1582 register_persistent (conn->host, conn->port, sock, using_ssl);
1584 if (statcode == HTTP_STATUS_UNAUTHORIZED)
1586 /* Authorization is required. */
1587 if (skip_short_body (sock, contlen))
1588 CLOSE_FINISH (sock);
1590 CLOSE_INVALIDATE (sock);
1591 if (auth_tried_already || !(user && passwd))
1593 /* If we have tried it already, then there is not point
1595 logputs (LOG_NOTQUIET, _("Authorization failed.\n"));
1599 char *www_authenticate = resp_header_strdup (resp,
1600 "WWW-Authenticate");
1601 /* If the authentication scheme is unknown or if it's the
1602 "Basic" authentication (which we try by default), there's
1603 no sense in retrying. */
1604 if (!www_authenticate
1605 || !known_authentication_scheme_p (www_authenticate)
1606 || BEGINS_WITH (www_authenticate, "Basic"))
1608 xfree_null (www_authenticate);
1609 logputs (LOG_NOTQUIET, _("Unknown authentication scheme.\n"));
1614 auth_tried_already = 1;
1615 pth = url_full_path (u);
1616 request_set_header (req, "Authorization",
1617 create_authorization_line (www_authenticate,
1619 request_method (req),
1623 xfree (www_authenticate);
1624 goto retry_with_auth;
1632 hs->statcode = statcode;
1634 hs->error = xstrdup (_("Malformed status line"));
1636 hs->error = xstrdup (_("(no description)"));
1638 hs->error = xstrdup (message);
1641 type = resp_header_strdup (resp, "Content-Type");
1644 char *tmp = strchr (type, ';');
1647 while (tmp > type && ISSPACE (tmp[-1]))
1652 hs->newloc = resp_header_strdup (resp, "Location");
1653 hs->remote_time = resp_header_strdup (resp, "Last-Modified");
1655 /* Handle (possibly multiple instances of) the Set-Cookie header. */
1658 const char *scbeg, *scend;
1659 /* The jar should have been created by now. */
1660 assert (wget_cookie_jar != NULL);
1662 (scpos = resp_header_locate (resp, "Set-Cookie", scpos,
1663 &scbeg, &scend)) != -1;
1666 char *set_cookie = strdupdelim (scbeg, scend);
1667 cookie_handle_set_cookie (wget_cookie_jar, u->host, u->port, u->path,
1673 if (resp_header_copy (resp, "Content-Range", hdrval, sizeof (hdrval)))
1675 wgint first_byte_pos, last_byte_pos, entity_length;
1676 if (parse_content_range (hdrval, &first_byte_pos, &last_byte_pos,
1678 contrange = first_byte_pos;
1683 /* 20x responses are counted among successful by default. */
1684 if (H_20X (statcode))
1687 /* Return if redirected. */
1688 if (H_REDIRECTED (statcode) || statcode == HTTP_STATUS_MULTIPLE_CHOICES)
1690 /* RFC2068 says that in case of the 300 (multiple choices)
1691 response, the server can output a preferred URL through
1692 `Location' header; otherwise, the request should be treated
1693 like GET. So, if the location is set, it will be a
1694 redirection; otherwise, just proceed normally. */
1695 if (statcode == HTTP_STATUS_MULTIPLE_CHOICES && !hs->newloc)
1699 logprintf (LOG_VERBOSE,
1700 _("Location: %s%s\n"),
1701 hs->newloc ? escnonprint_uri (hs->newloc) : _("unspecified"),
1702 hs->newloc ? _(" [following]") : "");
1705 if (skip_short_body (sock, contlen))
1706 CLOSE_FINISH (sock);
1708 CLOSE_INVALIDATE (sock);
1715 /* If content-type is not given, assume text/html. This is because
1716 of the multitude of broken CGI's that "forget" to generate the
1719 0 == strncasecmp (type, TEXTHTML_S, strlen (TEXTHTML_S)) ||
1720 0 == strncasecmp (type, TEXTXHTML_S, strlen (TEXTXHTML_S)))
1725 if (opt.html_extension && (*dt & TEXTHTML))
1726 /* -E / --html-extension / html_extension = on was specified, and this is a
1727 text/html file. If some case-insensitive variation on ".htm[l]" isn't
1728 already the file's suffix, tack on ".html". */
1730 char* last_period_in_local_filename = strrchr(*hs->local_file, '.');
1732 if (last_period_in_local_filename == NULL
1733 || !(0 == strcasecmp (last_period_in_local_filename, ".htm")
1734 || 0 == strcasecmp (last_period_in_local_filename, ".html")))
1736 size_t local_filename_len = strlen(*hs->local_file);
1738 *hs->local_file = xrealloc(*hs->local_file,
1739 local_filename_len + sizeof(".html"));
1740 strcpy(*hs->local_file + local_filename_len, ".html");
1742 *dt |= ADDED_HTML_EXTENSION;
1746 if (statcode == HTTP_STATUS_RANGE_NOT_SATISFIABLE)
1748 /* If `-c' is in use and the file has been fully downloaded (or
1749 the remote file has shrunk), Wget effectively requests bytes
1750 after the end of file and the server response with 416. */
1751 logputs (LOG_VERBOSE, _("\
1752 \n The file is already fully retrieved; nothing to do.\n\n"));
1753 /* In case the caller inspects. */
1756 /* Mark as successfully retrieved. */
1759 CLOSE_INVALIDATE (sock); /* would be CLOSE_FINISH, but there
1760 might be more bytes in the body. */
1761 return RETRUNNEEDED;
1763 if ((contrange != 0 && contrange != hs->restval)
1764 || (H_PARTIAL (statcode) && !contrange))
1766 /* The Range request was somehow misunderstood by the server.
1769 CLOSE_INVALIDATE (sock);
1772 hs->contlen = contlen + contrange;
1778 /* No need to print this output if the body won't be
1779 downloaded at all, or if the original server response is
1781 logputs (LOG_VERBOSE, _("Length: "));
1784 logputs (LOG_VERBOSE, with_thousand_seps (contlen + contrange));
1785 if (contlen + contrange >= 1024)
1786 logprintf (LOG_VERBOSE, " (%s)",
1787 human_readable (contlen + contrange));
1790 if (contlen >= 1024)
1791 logprintf (LOG_VERBOSE, _(", %s (%s) remaining"),
1792 with_thousand_seps (contlen),
1793 human_readable (contlen));
1795 logprintf (LOG_VERBOSE, _(", %s remaining"),
1796 with_thousand_seps (contlen));
1800 logputs (LOG_VERBOSE,
1801 opt.ignore_length ? _("ignored") : _("unspecified"));
1803 logprintf (LOG_VERBOSE, " [%s]\n", escnonprint (type));
1805 logputs (LOG_VERBOSE, "\n");
1809 type = NULL; /* We don't need it any more. */
1811 /* Return if we have no intention of further downloading. */
1812 if (!(*dt & RETROKF) || (*dt & HEAD_ONLY))
1814 /* In case the caller cares to look... */
1818 /* Pre-1.10 Wget used CLOSE_INVALIDATE here. Now we trust the
1819 servers not to send body in response to a HEAD request. If
1820 you encounter such a server (more likely a broken CGI), use
1821 `--no-http-keep-alive'. */
1822 CLOSE_FINISH (sock);
1823 return RETRFINISHED;
1826 /* Open the local file. */
1829 mkalldirs (*hs->local_file);
1831 rotate_backups (*hs->local_file);
1833 fp = fopen (*hs->local_file, "ab");
1834 else if (opt.noclobber || opt.always_rest || opt.timestamping || opt.dirstruct
1835 || opt.output_document)
1836 fp = fopen (*hs->local_file, "wb");
1839 fp = fopen_excl (*hs->local_file, 1);
1840 if (!fp && errno == EEXIST)
1842 /* We cannot just invent a new name and use it (which is
1843 what functions like unique_create typically do)
1844 because we told the user we'd use this name.
1845 Instead, return and retry the download. */
1846 logprintf (LOG_NOTQUIET,
1847 _("%s has sprung into existence.\n"),
1849 CLOSE_INVALIDATE (sock);
1850 return FOPEN_EXCL_ERR;
1855 logprintf (LOG_NOTQUIET, "%s: %s\n", *hs->local_file, strerror (errno));
1856 CLOSE_INVALIDATE (sock);
1863 /* #### This confuses the timestamping code that checks for file
1864 size. Maybe we should save some additional information? */
1865 if (opt.save_headers)
1866 fwrite (head, 1, strlen (head), fp);
1868 /* Download the request body. */
1871 flags |= rb_read_exactly;
1872 if (hs->restval > 0 && contrange == 0)
1873 /* If the server ignored our range request, instruct fd_read_body
1874 to skip the first RESTVAL bytes of body. */
1875 flags |= rb_skip_startpos;
1876 hs->len = hs->restval;
1878 hs->res = fd_read_body (sock, fp, contlen != -1 ? contlen : 0,
1879 hs->restval, &hs->rd_size, &hs->len, &hs->dltime,
1883 CLOSE_FINISH (sock);
1885 CLOSE_INVALIDATE (sock);
1888 /* Close or flush the file. We have to be careful to check for
1889 error here. Checking the result of fwrite() is not enough --
1890 errors could go unnoticed! */
1893 flush_res = fclose (fp);
1895 flush_res = fflush (fp);
1896 if (flush_res == EOF)
1901 return RETRFINISHED;
1904 /* The genuine HTTP loop! This is the part where the retrieval is
1905 retried, and retried, and retried, and... */
1907 http_loop (struct url *u, char **newloc, char **local_file, const char *referer,
1908 int *dt, struct url *proxy)
1911 int use_ts, got_head = 0; /* time-stamping info */
1912 char *filename_plus_orig_suffix;
1913 char *local_filename = NULL;
1914 char *tms, *locf, *tmrate;
1916 time_t tml = -1, tmr = -1; /* local and remote time-stamps */
1917 wgint local_size = 0; /* the size of the local file */
1918 size_t filename_len;
1919 struct http_stat hstat; /* HTTP status */
1923 /* This used to be done in main(), but it's a better idea to do it
1924 here so that we don't go through the hoops if we're just using
1928 if (!wget_cookie_jar)
1929 wget_cookie_jar = cookie_jar_new ();
1930 if (opt.cookies_input && !cookies_loaded_p)
1932 cookie_jar_load (wget_cookie_jar, opt.cookies_input);
1933 cookies_loaded_p = 1;
1939 /* Warn on (likely bogus) wildcard usage in HTTP. Don't use
1940 has_wildcards_p because it would also warn on `?', and we know that
1941 shows up in CGI paths a *lot*. */
1942 if (strchr (u->url, '*'))
1943 logputs (LOG_VERBOSE, _("Warning: wildcards not supported in HTTP.\n"));
1947 /* Determine the local filename. */
1948 if (local_file && *local_file)
1949 hstat.local_file = local_file;
1950 else if (local_file && !opt.output_document)
1952 *local_file = url_file_name (u);
1953 hstat.local_file = local_file;
1957 dummy = url_file_name (u);
1958 hstat.local_file = &dummy;
1959 /* be honest about where we will save the file */
1960 if (local_file && opt.output_document)
1961 *local_file = HYPHENP (opt.output_document) ? NULL : xstrdup (opt.output_document);
1964 if (!opt.output_document)
1965 locf = *hstat.local_file;
1967 locf = opt.output_document;
1969 hstat.referer = referer;
1971 filename_len = strlen (*hstat.local_file);
1972 filename_plus_orig_suffix = alloca (filename_len + sizeof (".orig"));
1974 if (opt.noclobber && file_exists_p (*hstat.local_file))
1976 /* If opt.noclobber is turned on and file already exists, do not
1977 retrieve the file */
1978 logprintf (LOG_VERBOSE, _("\
1979 File `%s' already there, will not retrieve.\n"), *hstat.local_file);
1980 /* If the file is there, we suppose it's retrieved OK. */
1983 /* #### Bogusness alert. */
1984 /* If its suffix is "html" or "htm" or similar, assume text/html. */
1985 if (has_html_suffix_p (*hstat.local_file))
1993 if (opt.timestamping)
1995 int local_dot_orig_file_exists = 0;
1997 if (opt.backup_converted)
1998 /* If -K is specified, we'll act on the assumption that it was specified
1999 last time these files were downloaded as well, and instead of just
2000 comparing local file X against server file X, we'll compare local
2001 file X.orig (if extant, else X) against server file X. If -K
2002 _wasn't_ specified last time, or the server contains files called
2003 *.orig, -N will be back to not operating correctly with -k. */
2005 /* Would a single s[n]printf() call be faster? --dan
2007 Definitely not. sprintf() is horribly slow. It's a
2008 different question whether the difference between the two
2009 affects a program. Usually I'd say "no", but at one
2010 point I profiled Wget, and found that a measurable and
2011 non-negligible amount of time was lost calling sprintf()
2012 in url.c. Replacing sprintf with inline calls to
2013 strcpy() and number_to_string() made a difference.
2015 memcpy (filename_plus_orig_suffix, *hstat.local_file, filename_len);
2016 memcpy (filename_plus_orig_suffix + filename_len,
2017 ".orig", sizeof (".orig"));
2019 /* Try to stat() the .orig file. */
2020 if (stat (filename_plus_orig_suffix, &st) == 0)
2022 local_dot_orig_file_exists = 1;
2023 local_filename = filename_plus_orig_suffix;
2027 if (!local_dot_orig_file_exists)
2028 /* Couldn't stat() <file>.orig, so try to stat() <file>. */
2029 if (stat (*hstat.local_file, &st) == 0)
2030 local_filename = *hstat.local_file;
2032 if (local_filename != NULL)
2033 /* There was a local file, so we'll check later to see if the version
2034 the server has is the same version we already have, allowing us to
2040 /* Modification time granularity is 2 seconds for Windows, so
2041 increase local time by 1 second for later comparison. */
2044 local_size = st.st_size;
2048 /* Reset the counter. */
2054 /* Increment the pass counter. */
2056 sleep_between_retrievals (count);
2057 /* Get the current time string. */
2058 tms = time_str (NULL);
2059 /* Print fetch message, if opt.verbose. */
2062 char *hurl = url_string (u, 1);
2066 sprintf (tmp, _("(try:%2d)"), count);
2067 logprintf (LOG_VERBOSE, "--%s-- %s\n %s => `%s'\n",
2068 tms, hurl, tmp, locf);
2070 ws_changetitle (hurl);
2075 /* Default document type is empty. However, if spider mode is
2076 on or time-stamping is employed, HEAD_ONLY commands is
2077 encoded within *dt. */
2078 if (opt.spider || (use_ts && !got_head))
2083 /* Decide whether or not to restart. */
2086 hstat.restval = hstat.len; /* continue where we left off */
2087 else if (opt.always_rest
2088 && stat (locf, &st) == 0
2089 && S_ISREG (st.st_mode))
2090 hstat.restval = st.st_size;
2092 /* Decide whether to send the no-cache directive. We send it in
2094 a) we're using a proxy, and we're past our first retrieval.
2095 Some proxies are notorious for caching incomplete data, so
2096 we require a fresh get.
2097 b) caching is explicitly inhibited. */
2098 if ((proxy && count > 1) /* a */
2099 || !opt.allow_cache /* b */
2101 *dt |= SEND_NOCACHE;
2103 *dt &= ~SEND_NOCACHE;
2105 /* Try fetching the document, or at least its head. */
2106 err = gethttp (u, &hstat, dt, proxy);
2108 /* It's unfortunate that wget determines the local filename before finding
2109 out the Content-Type of the file. Barring a major restructuring of the
2110 code, we need to re-set locf here, since gethttp() may have xrealloc()d
2111 *hstat.local_file to tack on ".html". */
2112 if (!opt.output_document)
2113 locf = *hstat.local_file;
2116 tms = time_str (NULL);
2117 /* Get the new location (with or without the redirection). */
2119 *newloc = xstrdup (hstat.newloc);
2122 case HERR: case HEOF: case CONSOCKERR: case CONCLOSED:
2123 case CONERROR: case READERR: case WRITEFAILED:
2124 case RANGEERR: case FOPEN_EXCL_ERR:
2125 /* Non-fatal errors continue executing the loop, which will
2126 bring them to "while" statement at the end, to judge
2127 whether the number of tries was exceeded. */
2128 free_hstat (&hstat);
2129 printwhat (count, opt.ntry);
2130 if (err == FOPEN_EXCL_ERR)
2132 /* Re-determine the file name. */
2133 if (local_file && *local_file)
2135 xfree (*local_file);
2136 *local_file = url_file_name (u);
2137 hstat.local_file = local_file;
2142 dummy = url_file_name (u);
2143 hstat.local_file = &dummy;
2145 /* be honest about where we will save the file */
2146 if (local_file && opt.output_document)
2147 *local_file = HYPHENP (opt.output_document) ? NULL : xstrdup (opt.output_document);
2148 if (!opt.output_document)
2149 locf = *hstat.local_file;
2151 locf = opt.output_document;
2155 case HOSTERR: case CONIMPOSSIBLE: case PROXERR: case AUTHFAILED:
2156 case SSLERRCTXCREATE: case CONTNOTSUPPORTED:
2157 /* Fatal errors just return from the function. */
2158 free_hstat (&hstat);
2162 case FWRITEERR: case FOPENERR:
2163 /* Another fatal error. */
2164 logputs (LOG_VERBOSE, "\n");
2165 logprintf (LOG_NOTQUIET, _("Cannot write to `%s' (%s).\n"),
2166 *hstat.local_file, strerror (errno));
2167 free_hstat (&hstat);
2172 /* Another fatal error. */
2173 logputs (LOG_VERBOSE, "\n");
2174 logprintf (LOG_NOTQUIET, _("Unable to establish SSL connection.\n"));
2175 free_hstat (&hstat);
2180 /* Return the new location to the caller. */
2183 logprintf (LOG_NOTQUIET,
2184 _("ERROR: Redirection (%d) without location.\n"),
2186 free_hstat (&hstat);
2190 free_hstat (&hstat);
2195 /* The file was already fully retrieved. */
2196 free_hstat (&hstat);
2201 /* Deal with you later. */
2204 /* All possibilities should have been exhausted. */
2207 if (!(*dt & RETROKF))
2211 /* #### Ugly ugly ugly! */
2212 char *hurl = url_string (u, 1);
2213 logprintf (LOG_NONVERBOSE, "%s:\n", hurl);
2216 logprintf (LOG_NOTQUIET, _("%s ERROR %d: %s.\n"),
2217 tms, hstat.statcode, escnonprint (hstat.error));
2218 logputs (LOG_VERBOSE, "\n");
2219 free_hstat (&hstat);
2224 /* Did we get the time-stamp? */
2227 if (opt.timestamping && !hstat.remote_time)
2229 logputs (LOG_NOTQUIET, _("\
2230 Last-modified header missing -- time-stamps turned off.\n"));
2232 else if (hstat.remote_time)
2234 /* Convert the date-string into struct tm. */
2235 tmr = http_atotm (hstat.remote_time);
2236 if (tmr == (time_t) (-1))
2237 logputs (LOG_VERBOSE, _("\
2238 Last-modified header invalid -- time-stamp ignored.\n"));
2242 /* The time-stamping section. */
2247 use_ts = 0; /* no more time-stamping */
2248 count = 0; /* the retrieve count for HEAD is
2250 if (hstat.remote_time && tmr != (time_t) (-1))
2252 /* Now time-stamping can be used validly. Time-stamping
2253 means that if the sizes of the local and remote file
2254 match, and local file is newer than the remote file,
2255 it will not be retrieved. Otherwise, the normal
2256 download procedure is resumed. */
2258 (hstat.contlen == -1 || local_size == hstat.contlen))
2260 logprintf (LOG_VERBOSE, _("\
2261 Server file no newer than local file `%s' -- not retrieving.\n\n"),
2263 free_hstat (&hstat);
2267 else if (tml >= tmr)
2268 logprintf (LOG_VERBOSE, _("\
2269 The sizes do not match (local %s) -- retrieving.\n"),
2270 number_to_static_string (local_size));
2272 logputs (LOG_VERBOSE,
2273 _("Remote file is newer, retrieving.\n"));
2275 free_hstat (&hstat);
2278 if ((tmr != (time_t) (-1))
2280 && ((hstat.len == hstat.contlen) ||
2281 ((hstat.res == 0) &&
2282 ((hstat.contlen == -1) ||
2283 (hstat.len >= hstat.contlen && !opt.kill_longer)))))
2285 /* #### This code repeats in http.c and ftp.c. Move it to a
2287 const char *fl = NULL;
2288 if (opt.output_document)
2290 if (output_stream_regular)
2291 fl = opt.output_document;
2294 fl = *hstat.local_file;
2298 /* End of time-stamping section. */
2302 logprintf (LOG_NOTQUIET, "%d %s\n\n", hstat.statcode,
2303 escnonprint (hstat.error));
2308 tmrate = retr_rate (hstat.rd_size, hstat.dltime, 0);
2310 if (hstat.len == hstat.contlen)
2314 logprintf (LOG_VERBOSE,
2315 _("%s (%s) - `%s' saved [%s/%s]\n\n"),
2317 number_to_static_string (hstat.len),
2318 number_to_static_string (hstat.contlen));
2319 logprintf (LOG_NONVERBOSE,
2320 "%s URL:%s [%s/%s] -> \"%s\" [%d]\n",
2322 number_to_static_string (hstat.len),
2323 number_to_static_string (hstat.contlen),
2327 total_downloaded_bytes += hstat.len;
2329 /* Remember that we downloaded the file for later ".orig" code. */
2330 if (*dt & ADDED_HTML_EXTENSION)
2331 downloaded_file(FILE_DOWNLOADED_AND_HTML_EXTENSION_ADDED, locf);
2333 downloaded_file(FILE_DOWNLOADED_NORMALLY, locf);
2335 free_hstat (&hstat);
2339 else if (hstat.res == 0) /* No read error */
2341 if (hstat.contlen == -1) /* We don't know how much we were supposed
2342 to get, so assume we succeeded. */
2346 logprintf (LOG_VERBOSE,
2347 _("%s (%s) - `%s' saved [%s]\n\n"),
2349 number_to_static_string (hstat.len));
2350 logprintf (LOG_NONVERBOSE,
2351 "%s URL:%s [%s] -> \"%s\" [%d]\n",
2352 tms, u->url, number_to_static_string (hstat.len),
2356 total_downloaded_bytes += hstat.len;
2358 /* Remember that we downloaded the file for later ".orig" code. */
2359 if (*dt & ADDED_HTML_EXTENSION)
2360 downloaded_file(FILE_DOWNLOADED_AND_HTML_EXTENSION_ADDED, locf);
2362 downloaded_file(FILE_DOWNLOADED_NORMALLY, locf);
2364 free_hstat (&hstat);
2368 else if (hstat.len < hstat.contlen) /* meaning we lost the
2369 connection too soon */
2371 logprintf (LOG_VERBOSE,
2372 _("%s (%s) - Connection closed at byte %s. "),
2373 tms, tmrate, number_to_static_string (hstat.len));
2374 printwhat (count, opt.ntry);
2375 free_hstat (&hstat);
2378 else if (!opt.kill_longer) /* meaning we got more than expected */
2380 logprintf (LOG_VERBOSE,
2381 _("%s (%s) - `%s' saved [%s/%s])\n\n"),
2383 number_to_static_string (hstat.len),
2384 number_to_static_string (hstat.contlen));
2385 logprintf (LOG_NONVERBOSE,
2386 "%s URL:%s [%s/%s] -> \"%s\" [%d]\n",
2388 number_to_static_string (hstat.len),
2389 number_to_static_string (hstat.contlen),
2392 total_downloaded_bytes += hstat.len;
2394 /* Remember that we downloaded the file for later ".orig" code. */
2395 if (*dt & ADDED_HTML_EXTENSION)
2396 downloaded_file(FILE_DOWNLOADED_AND_HTML_EXTENSION_ADDED, locf);
2398 downloaded_file(FILE_DOWNLOADED_NORMALLY, locf);
2400 free_hstat (&hstat);
2404 else /* the same, but not accepted */
2406 logprintf (LOG_VERBOSE,
2407 _("%s (%s) - Connection closed at byte %s/%s. "),
2409 number_to_static_string (hstat.len),
2410 number_to_static_string (hstat.contlen));
2411 printwhat (count, opt.ntry);
2412 free_hstat (&hstat);
2416 else /* now hstat.res can only be -1 */
2418 if (hstat.contlen == -1)
2420 logprintf (LOG_VERBOSE,
2421 _("%s (%s) - Read error at byte %s (%s)."),
2422 tms, tmrate, number_to_static_string (hstat.len),
2424 printwhat (count, opt.ntry);
2425 free_hstat (&hstat);
2428 else /* hstat.res == -1 and contlen is given */
2430 logprintf (LOG_VERBOSE,
2431 _("%s (%s) - Read error at byte %s/%s (%s). "),
2433 number_to_static_string (hstat.len),
2434 number_to_static_string (hstat.contlen),
2436 printwhat (count, opt.ntry);
2437 free_hstat (&hstat);
2444 while (!opt.ntry || (count < opt.ntry));
2448 /* Converts struct tm to time_t, assuming the data in tm is UTC rather
2449 than local timezone.
2451 mktime is similar but assumes struct tm, also known as the
2452 "broken-down" form of time, is in local time zone. mktime_from_utc
2453 uses mktime to make the conversion understanding that an offset
2454 will be introduced by the local time assumption.
2456 mktime_from_utc then measures the introduced offset by applying
2457 gmtime to the initial result and applying mktime to the resulting
2458 "broken-down" form. The difference between the two mktime results
2459 is the measured offset which is then subtracted from the initial
2460 mktime result to yield a calendar time which is the value returned.
2462 tm_isdst in struct tm is set to 0 to force mktime to introduce a
2463 consistent offset (the non DST offset) since tm and tm+o might be
2464 on opposite sides of a DST change.
2466 Some implementations of mktime return -1 for the nonexistent
2467 localtime hour at the beginning of DST. In this event, use
2468 mktime(tm - 1hr) + 3600.
2472 gmtime(t+o) --> tm+o
2473 mktime(tm+o) --> t+2o
2474 t+o - (t+2o - t+o) = t
2476 Note that glibc contains a function of the same purpose named
2477 `timegm' (reverse of gmtime). But obviously, it is not universally
2478 available, and unfortunately it is not straightforwardly
2479 extractable for use here. Perhaps configure should detect timegm
2480 and use it where available.
2482 Contributed by Roger Beeman <beeman@cisco.com>, with the help of
2483 Mark Baushke <mdb@cisco.com> and the rest of the Gurus at CISCO.
2484 Further improved by Roger with assistance from Edward J. Sabol
2485 based on input by Jamie Zawinski. */
2488 mktime_from_utc (struct tm *t)
2499 return -1; /* can't deal with output from strptime */
2510 return -1; /* can't deal with output from gmtime */
2513 return (tl - (tb - tl));
2516 /* Check whether the result of strptime() indicates success.
2517 strptime() returns the pointer to how far it got to in the string.
2518 The processing has been successful if the string is at `GMT' or
2519 `+X', or at the end of the string.
2521 In extended regexp parlance, the function returns 1 if P matches
2522 "^ *(GMT|[+-][0-9]|$)", 0 otherwise. P being NULL (which strptime
2523 can return) is considered a failure and 0 is returned. */
2525 check_end (const char *p)
2529 while (ISSPACE (*p))
2532 || (p[0] == 'G' && p[1] == 'M' && p[2] == 'T')
2533 || ((p[0] == '+' || p[0] == '-') && ISDIGIT (p[1])))
2539 /* Convert the textual specification of time in TIME_STRING to the
2540 number of seconds since the Epoch.
2542 TIME_STRING can be in any of the three formats RFC2068 allows the
2543 HTTP servers to emit -- RFC1123-date, RFC850-date or asctime-date.
2544 Timezones are ignored, and should be GMT.
2546 Return the computed time_t representation, or -1 if the conversion
2549 This function uses strptime with various string formats for parsing
2550 TIME_STRING. This results in a parser that is not as lenient in
2551 interpreting TIME_STRING as I would like it to be. Being based on
2552 strptime, it always allows shortened months, one-digit days, etc.,
2553 but due to the multitude of formats in which time can be
2554 represented, an ideal HTTP time parser would be even more
2555 forgiving. It should completely ignore things like week days and
2556 concentrate only on the various forms of representing years,
2557 months, days, hours, minutes, and seconds. For example, it would
2558 be nice if it accepted ISO 8601 out of the box.
2560 I've investigated free and PD code for this purpose, but none was
2561 usable. getdate was big and unwieldy, and had potential copyright
2562 issues, or so I was informed. Dr. Marcus Hennecke's atotm(),
2563 distributed with phttpd, is excellent, but we cannot use it because
2564 it is not assigned to the FSF. So I stuck it with strptime. */
2567 http_atotm (const char *time_string)
2569 /* NOTE: Solaris strptime man page claims that %n and %t match white
2570 space, but that's not universally available. Instead, we simply
2571 use ` ' to mean "skip all WS", which works under all strptime
2572 implementations I've tested. */
2574 static const char *time_formats[] = {
2575 "%a, %d %b %Y %T", /* RFC1123: Thu, 29 Jan 1998 22:12:57 */
2576 "%A, %d-%b-%y %T", /* RFC850: Thursday, 29-Jan-98 22:12:57 */
2577 "%a, %d-%b-%Y %T", /* pseudo-RFC850: Thu, 29-Jan-1998 22:12:57
2578 (google.com uses this for their cookies.) */
2579 "%a %b %d %T %Y" /* asctime: Thu Jan 29 22:12:57 1998 */
2585 /* According to Roger Beeman, we need to initialize tm_isdst, since
2586 strptime won't do it. */
2589 /* Note that under foreign locales Solaris strptime() fails to
2590 recognize English dates, which renders this function useless. We
2591 solve this by being careful not to affect LC_TIME when
2592 initializing locale.
2594 Another solution would be to temporarily set locale to C, invoke
2595 strptime(), and restore it back. This is slow and dirty,
2596 however, and locale support other than LC_MESSAGES can mess other
2597 things, so I rather chose to stick with just setting LC_MESSAGES.
2599 GNU strptime does not have this problem because it recognizes
2600 both international and local dates. */
2602 for (i = 0; i < countof (time_formats); i++)
2603 if (check_end (strptime (time_string, time_formats[i], &t)))
2604 return mktime_from_utc (&t);
2606 /* All formats have failed. */
2610 /* Authorization support: We support two authorization schemes:
2612 * `Basic' scheme, consisting of base64-ing USER:PASSWORD string;
2614 * `Digest' scheme, added by Junio Hamano <junio@twinsun.com>,
2615 consisting of answering to the server's challenge with the proper
2618 /* Create the authentication header contents for the `Basic' scheme.
2619 This is done by encoding the string `USER:PASS' in base64 and
2620 prepending `HEADER: Basic ' to it. */
2622 basic_authentication_encode (const char *user, const char *passwd)
2625 int len1 = strlen (user) + 1 + strlen (passwd);
2626 int len2 = BASE64_LENGTH (len1);
2628 t1 = (char *)alloca (len1 + 1);
2629 sprintf (t1, "%s:%s", user, passwd);
2631 t2 = (char *)alloca (len2 + 1);
2632 base64_encode (t1, t2, len1);
2634 return concat_strings ("Basic ", t2, (char *) 0);
2637 #define SKIP_WS(x) do { \
2638 while (ISSPACE (*(x))) \
2642 #ifdef ENABLE_DIGEST
2643 /* Parse HTTP `WWW-Authenticate:' header. AU points to the beginning
2644 of a field in such a header. If the field is the one specified by
2645 ATTR_NAME ("realm", "opaque", and "nonce" are used by the current
2646 digest authorization code), extract its value in the (char*)
2647 variable pointed by RET. Returns negative on a malformed header,
2648 or number of bytes that have been parsed by this call. */
2650 extract_header_attr (const char *au, const char *attr_name, char **ret)
2653 const char *cp = au;
2655 if (strncmp (cp, attr_name, strlen (attr_name)) == 0)
2657 cp += strlen (attr_name);
2670 for (ep = cp; *ep && *ep != '\"'; ep++)
2675 *ret = strdupdelim (cp, ep);
2682 /* Dump the hexadecimal representation of HASH to BUF. HASH should be
2683 an array of 16 bytes containing the hash keys, and BUF should be a
2684 buffer of 33 writable characters (32 for hex digits plus one for
2685 zero termination). */
2687 dump_hash (unsigned char *buf, const unsigned char *hash)
2691 for (i = 0; i < MD5_HASHLEN; i++, hash++)
2693 *buf++ = XNUM_TO_digit (*hash >> 4);
2694 *buf++ = XNUM_TO_digit (*hash & 0xf);
2699 /* Take the line apart to find the challenge, and compose a digest
2700 authorization header. See RFC2069 section 2.1.2. */
2702 digest_authentication_encode (const char *au, const char *user,
2703 const char *passwd, const char *method,
2706 static char *realm, *opaque, *nonce;
2711 { "realm", &realm },
2712 { "opaque", &opaque },
2717 realm = opaque = nonce = NULL;
2719 au += 6; /* skip over `Digest' */
2725 for (i = 0; i < countof (options); i++)
2727 int skip = extract_header_attr (au, options[i].name,
2728 options[i].variable);
2732 xfree_null (opaque);
2742 if (i == countof (options))
2744 while (*au && *au != '=')
2752 while (*au && *au != '\"')
2759 while (*au && *au != ',')
2764 if (!realm || !nonce || !user || !passwd || !path || !method)
2767 xfree_null (opaque);
2772 /* Calculate the digest value. */
2774 ALLOCA_MD5_CONTEXT (ctx);
2775 unsigned char hash[MD5_HASHLEN];
2776 unsigned char a1buf[MD5_HASHLEN * 2 + 1], a2buf[MD5_HASHLEN * 2 + 1];
2777 unsigned char response_digest[MD5_HASHLEN * 2 + 1];
2779 /* A1BUF = H(user ":" realm ":" password) */
2781 gen_md5_update ((unsigned char *)user, strlen (user), ctx);
2782 gen_md5_update ((unsigned char *)":", 1, ctx);
2783 gen_md5_update ((unsigned char *)realm, strlen (realm), ctx);
2784 gen_md5_update ((unsigned char *)":", 1, ctx);
2785 gen_md5_update ((unsigned char *)passwd, strlen (passwd), ctx);
2786 gen_md5_finish (ctx, hash);
2787 dump_hash (a1buf, hash);
2789 /* A2BUF = H(method ":" path) */
2791 gen_md5_update ((unsigned char *)method, strlen (method), ctx);
2792 gen_md5_update ((unsigned char *)":", 1, ctx);
2793 gen_md5_update ((unsigned char *)path, strlen (path), ctx);
2794 gen_md5_finish (ctx, hash);
2795 dump_hash (a2buf, hash);
2797 /* RESPONSE_DIGEST = H(A1BUF ":" nonce ":" A2BUF) */
2799 gen_md5_update (a1buf, MD5_HASHLEN * 2, ctx);
2800 gen_md5_update ((unsigned char *)":", 1, ctx);
2801 gen_md5_update ((unsigned char *)nonce, strlen (nonce), ctx);
2802 gen_md5_update ((unsigned char *)":", 1, ctx);
2803 gen_md5_update (a2buf, MD5_HASHLEN * 2, ctx);
2804 gen_md5_finish (ctx, hash);
2805 dump_hash (response_digest, hash);
2807 res = (char*) xmalloc (strlen (user)
2812 + 2 * MD5_HASHLEN /*strlen (response_digest)*/
2813 + (opaque ? strlen (opaque) : 0)
2815 sprintf (res, "Digest \
2816 username=\"%s\", realm=\"%s\", nonce=\"%s\", uri=\"%s\", response=\"%s\"",
2817 user, realm, nonce, path, response_digest);
2820 char *p = res + strlen (res);
2821 strcat (p, ", opaque=\"");
2828 #endif /* ENABLE_DIGEST */
2831 #define BEGINS_WITH(line, string_constant) \
2832 (!strncasecmp (line, string_constant, sizeof (string_constant) - 1) \
2833 && (ISSPACE (line[sizeof (string_constant) - 1]) \
2834 || !line[sizeof (string_constant) - 1]))
2837 known_authentication_scheme_p (const char *au)
2839 return BEGINS_WITH (au, "Basic")
2840 #ifdef ENABLE_DIGEST
2841 || BEGINS_WITH (au, "Digest")
2844 || BEGINS_WITH (au, "NTLM")
2851 /* Create the HTTP authorization request header. When the
2852 `WWW-Authenticate' response header is seen, according to the
2853 authorization scheme specified in that header (`Basic' and `Digest'
2854 are supported by the current implementation), produce an
2855 appropriate HTTP authorization request header. */
2857 create_authorization_line (const char *au, const char *user,
2858 const char *passwd, const char *method,
2861 if (0 == strncasecmp (au, "Basic", 5))
2862 return basic_authentication_encode (user, passwd);
2863 #ifdef ENABLE_DIGEST
2864 if (0 == strncasecmp (au, "Digest", 6))
2865 return digest_authentication_encode (au, user, passwd, method, path);
2868 if (0 == strncasecmp (au, "NTLM", 4))
2870 int ok = ntlm_input (&pconn.ntlm, au);
2873 /* #### we shouldn't ignore the OK that ntlm_output returns. */
2874 return ntlm_output (&pconn.ntlm, user, passwd, &ok);
2883 if (wget_cookie_jar)
2884 cookie_jar_save (wget_cookie_jar, opt.cookies_output);
2890 xfree_null (pconn.host);
2891 if (wget_cookie_jar)
2892 cookie_jar_delete (wget_cookie_jar);