2 Copyright (C) 1995, 1996, 1997, 1998, 2000 Free Software Foundation, Inc.
4 This file is part of Wget.
6 This program 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 This program 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 this program; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
24 #include <sys/types.h>
36 #if TIME_WITH_SYS_TIME
37 # include <sys/time.h>
41 # include <sys/time.h>
65 extern char *version_string;
75 #define TEXTHTML_S "text/html"
76 #define HTTP_ACCEPT "*/*"
78 /* Some status code validation macros: */
79 #define H_20X(x) (((x) >= 200) && ((x) < 300))
80 #define H_PARTIAL(x) ((x) == HTTP_STATUS_PARTIAL_CONTENTS)
81 #define H_REDIRECTED(x) (((x) == HTTP_STATUS_MOVED_PERMANENTLY) \
82 || ((x) == HTTP_STATUS_MOVED_TEMPORARILY))
84 /* HTTP/1.0 status codes from RFC1945, provided for reference. */
86 #define HTTP_STATUS_OK 200
87 #define HTTP_STATUS_CREATED 201
88 #define HTTP_STATUS_ACCEPTED 202
89 #define HTTP_STATUS_NO_CONTENT 204
90 #define HTTP_STATUS_PARTIAL_CONTENTS 206
92 /* Redirection 3xx. */
93 #define HTTP_STATUS_MULTIPLE_CHOICES 300
94 #define HTTP_STATUS_MOVED_PERMANENTLY 301
95 #define HTTP_STATUS_MOVED_TEMPORARILY 302
96 #define HTTP_STATUS_NOT_MODIFIED 304
98 /* Client error 4xx. */
99 #define HTTP_STATUS_BAD_REQUEST 400
100 #define HTTP_STATUS_UNAUTHORIZED 401
101 #define HTTP_STATUS_FORBIDDEN 403
102 #define HTTP_STATUS_NOT_FOUND 404
104 /* Server errors 5xx. */
105 #define HTTP_STATUS_INTERNAL 500
106 #define HTTP_STATUS_NOT_IMPLEMENTED 501
107 #define HTTP_STATUS_BAD_GATEWAY 502
108 #define HTTP_STATUS_UNAVAILABLE 503
111 /* Parse the HTTP status line, which is of format:
113 HTTP-Version SP Status-Code SP Reason-Phrase
115 The function returns the status-code, or -1 if the status line is
116 malformed. The pointer to reason-phrase is returned in RP. */
118 parse_http_status_line (const char *line, const char **reason_phrase_ptr)
120 /* (the variables must not be named `major' and `minor', because
121 that breaks compilation with SunOS4 cc.) */
122 int mjr, mnr, statcode;
125 *reason_phrase_ptr = NULL;
127 /* The standard format of HTTP-Version is: `HTTP/X.Y', where X is
128 major version, and Y is minor version. */
129 if (strncmp (line, "HTTP/", 5) != 0)
133 /* Calculate major HTTP version. */
135 for (mjr = 0; ISDIGIT (*line); line++)
136 mjr = 10 * mjr + (*line - '0');
137 if (*line != '.' || p == line)
141 /* Calculate minor HTTP version. */
143 for (mnr = 0; ISDIGIT (*line); line++)
144 mnr = 10 * mnr + (*line - '0');
145 if (*line != ' ' || p == line)
147 /* Wget will accept only 1.0 and higher HTTP-versions. The value of
148 minor version can be safely ignored. */
153 /* Calculate status code. */
154 if (!(ISDIGIT (*line) && ISDIGIT (line[1]) && ISDIGIT (line[2])))
156 statcode = 100 * (*line - '0') + 10 * (line[1] - '0') + (line[2] - '0');
158 /* Set up the reason phrase pointer. */
160 /* RFC2068 requires SPC here, but we allow the string to finish
161 here, in case no reason-phrase is present. */
165 *reason_phrase_ptr = line;
170 *reason_phrase_ptr = line + 1;
175 /* Functions to be used as arguments to header_process(): */
177 struct http_process_range_closure {
183 /* Parse the `Content-Range' header and extract the information it
184 contains. Returns 1 if successful, -1 otherwise. */
186 http_process_range (const char *hdr, void *arg)
188 struct http_process_range_closure *closure
189 = (struct http_process_range_closure *)arg;
192 /* Certain versions of Nutscape proxy server send out
193 `Content-Length' without "bytes" specifier, which is a breach of
194 RFC2068 (as well as the HTTP/1.1 draft which was current at the
195 time). But hell, I must support it... */
196 if (!strncasecmp (hdr, "bytes", 5))
199 hdr += skip_lws (hdr);
205 for (num = 0; ISDIGIT (*hdr); hdr++)
206 num = 10 * num + (*hdr - '0');
207 if (*hdr != '-' || !ISDIGIT (*(hdr + 1)))
209 closure->first_byte_pos = num;
211 for (num = 0; ISDIGIT (*hdr); hdr++)
212 num = 10 * num + (*hdr - '0');
213 if (*hdr != '/' || !ISDIGIT (*(hdr + 1)))
215 closure->last_byte_pos = num;
217 for (num = 0; ISDIGIT (*hdr); hdr++)
218 num = 10 * num + (*hdr - '0');
219 closure->entity_length = num;
223 /* Place 1 to ARG if the HDR contains the word "none", 0 otherwise.
224 Used for `Accept-Ranges'. */
226 http_process_none (const char *hdr, void *arg)
228 int *where = (int *)arg;
230 if (strstr (hdr, "none"))
237 /* Place the malloc-ed copy of HDR hdr, to the first `;' to ARG. */
239 http_process_type (const char *hdr, void *arg)
241 char **result = (char **)arg;
244 p = strrchr (hdr, ';');
248 *result = (char *)xmalloc (len + 1);
249 memcpy (*result, hdr, len);
250 (*result)[len] = '\0';
253 *result = xstrdup (hdr);
257 /* Check whether the `Connection' header is set to "keep-alive". */
259 http_process_connection (const char *hdr, void *arg)
261 int *flag = (int *)arg;
262 if (!strcasecmp (hdr, "Keep-Alive"))
267 /* Persistent connections (pc). */
269 static unsigned char pc_last_host[4];
270 static unsigned short pc_last_port;
271 static int pc_last_fd;
274 register_persistent (const char *host, unsigned short port, int fd)
276 if (!store_hostaddress (pc_last_host, host))
283 invalidate_persistent (void)
289 persistent_available_p (const char *host, unsigned short port)
291 unsigned char this_host[4];
292 if (port != pc_last_port)
294 if (!store_hostaddress (this_host, host))
296 if (memcmp (pc_last_host, this_host, 4))
298 if (!test_socket_open (pc_last_fd))
300 invalidate_persistent ();
306 /* The idea behind these two CLOSE macros is to distinguish between
307 two cases: one when the job we've been doing is finished, and we
308 want to close the connection and leave, and two when something is
309 seriously wrong and we're closing the connection as part of
312 In case of keep_alive, CLOSE_FINISH should leave the connection
313 open, while CLOSE_INVALIDATE should still close it.
315 The semantic difference between the flags `keep_alive' and
316 `reused_connection' is that keep_alive defines the state of HTTP:
317 whether the connection *will* be preservable. reused_connection,
318 on the other hand, reflects the present: whether the *current*
319 connection is the result of preserving. */
321 #define CLOSE_FINISH(fd) do { \
325 if (reused_connection) \
326 invalidate_persistent (); \
330 #define CLOSE_INVALIDATE(fd) do { \
332 if (reused_connection) \
333 invalidate_persistent (); \
339 long len; /* received length */
340 long contlen; /* expected length */
341 long restval; /* the restart value */
342 int res; /* the result of last read */
343 char *newloc; /* new location (redirection) */
344 char *remote_time; /* remote time-stamp string */
345 char *error; /* textual HTTP error */
346 int statcode; /* status code */
347 long dltime; /* time of the download */
350 /* Free the elements of hstat X. */
351 #define FREEHSTAT(x) do \
353 FREE_MAYBE ((x).newloc); \
354 FREE_MAYBE ((x).remote_time); \
355 FREE_MAYBE ((x).error); \
356 (x).newloc = (x).remote_time = (x).error = NULL; \
359 static char *create_authorization_line PARAMS ((const char *, const char *,
360 const char *, const char *,
362 static char *basic_authentication_encode PARAMS ((const char *, const char *,
364 static int known_authentication_scheme_p PARAMS ((const char *));
366 static time_t http_atotm PARAMS ((char *));
368 /* Retrieve a document through HTTP protocol. It recognizes status
369 code, and correctly handles redirections. It closes the network
370 socket. If it receives an error from the functions below it, it
371 will print it if there is enough information to do so (almost
372 always), returning the error to the caller (i.e. http_loop).
374 Various HTTP parameters are stored to hs. Although it parses the
375 response code correctly, it is not used in a sane way. The caller
378 If u->proxy is non-NULL, the URL u will be taken as a proxy URL,
379 and u->proxy->url will be given to the proxy server (bad naming,
382 gethttp (struct urlinfo *u, struct http_stat *hs, int *dt)
384 char *request, *type, *command, *path;
386 char *pragma_h, *referer, *useragent, *range, *wwwauth, *remhost;
387 char *authenticate_h;
392 int sock, hcount, num_written, all_length, remport, statcode;
393 long contlen, contrange;
397 int auth_tried_already;
399 int keep_alive, http_keep_alive_1, http_keep_alive_2;
400 int reused_connection;
402 if (!(*dt & HEAD_ONLY))
403 /* If we're doing a GET on the URL, as opposed to just a HEAD, we need to
404 know the local filename so we can save to it. */
405 assert (u->local != NULL);
408 auth_tried_already = 0;
411 /* We need to come back here when the initial attempt to retrieve
412 without authorization header fails. */
414 http_keep_alive_1 = http_keep_alive_2 = 0;
415 reused_connection = 0;
417 /* Initialize certain elements of struct http_stat. */
422 hs->remote_time = NULL;
425 /* Which structure to use to retrieve the original URL data. */
431 /* First: establish the connection. */
432 if (u->proxy || !persistent_available_p (u->host, u->port))
434 logprintf (LOG_VERBOSE, _("Connecting to %s:%hu... "), u->host, u->port);
435 err = make_connection (&sock, u->host, u->port);
439 logputs (LOG_VERBOSE, "\n");
440 logprintf (LOG_NOTQUIET, "%s: %s.\n", u->host, herrmsg (h_errno));
444 logputs (LOG_VERBOSE, "\n");
445 logprintf (LOG_NOTQUIET, "socket: %s\n", strerror (errno));
449 logputs (LOG_VERBOSE, "\n");
450 logprintf (LOG_NOTQUIET,
451 _("Connection to %s:%hu refused.\n"), u->host, u->port);
455 logputs (LOG_VERBOSE, "\n");
456 logprintf (LOG_NOTQUIET, "connect: %s\n", strerror (errno));
461 /* Everything is fine! */
462 logputs (LOG_VERBOSE, _("connected!\n"));
471 logprintf (LOG_VERBOSE, _("Reusing connection to %s:%hu.\n"), u->host, u->port);
473 reused_connection = 1;
477 path = u->proxy->url;
481 command = (*dt & HEAD_ONLY) ? "HEAD" : "GET";
485 referer = (char *)alloca (9 + strlen (ou->referer) + 3);
486 sprintf (referer, "Referer: %s\r\n", ou->referer);
488 if (*dt & SEND_NOCACHE)
489 pragma_h = "Pragma: no-cache\r\n";
494 range = (char *)alloca (13 + numdigit (hs->restval) + 4);
495 /* #### Gag me! Some servers (e.g. WebSitePro) have been known
496 to misinterpret the following `Range' format, and return the
497 document as multipart/x-byte-ranges MIME type!
499 #### TODO: Interpret MIME types, recognize bullshits similar
500 the one described above, and deal with them! */
501 sprintf (range, "Range: bytes=%ld-\r\n", hs->restval);
506 STRDUP_ALLOCA (useragent, opt.useragent);
509 useragent = (char *)alloca (10 + strlen (version_string));
510 sprintf (useragent, "Wget/%s", version_string);
512 /* Construct the authentication, if userid is present. */
515 search_netrc (u->host, (const char **)&user, (const char **)&passwd, 0);
516 user = user ? user : opt.http_user;
517 passwd = passwd ? passwd : opt.http_passwd;
520 if (authenticate_h && user && passwd)
522 wwwauth = create_authorization_line (authenticate_h, user, passwd,
529 char *proxy_user, *proxy_passwd;
530 /* For normal username and password, URL components override
531 command-line/wgetrc parameters. With proxy authentication,
532 it's the reverse, because proxy URLs are normally the
533 "permanent" ones, so command-line args should take
535 if (opt.proxy_user && opt.proxy_passwd)
537 proxy_user = opt.proxy_user;
538 proxy_passwd = opt.proxy_passwd;
542 proxy_user = u->user;
543 proxy_passwd = u->passwd;
545 /* #### This is junky. Can't the proxy request, say, `Digest'
547 if (proxy_user && proxy_passwd)
548 proxyauth = basic_authentication_encode (proxy_user, proxy_passwd,
549 "Proxy-Authorization");
561 host_port = (char *)alloca (numdigit (remport) + 2);
562 host_port_len = sprintf (host_port, ":%d", remport);
565 /* Allocate the memory for the request. */
566 request = (char *)alloca (strlen (command) + strlen (path)
568 + strlen (remhost) + host_port_len
569 + strlen (HTTP_ACCEPT)
570 + (referer ? strlen (referer) : 0)
571 + (wwwauth ? strlen (wwwauth) : 0)
572 + (proxyauth ? strlen (proxyauth) : 0)
573 + (range ? strlen (range) : 0)
575 + (opt.user_header ? strlen (opt.user_header) : 0)
577 /* Construct the request. */
583 Connection: Keep-Alive\r\n\
585 command, path, useragent, remhost,
586 host_port ? host_port : "",
587 HTTP_ACCEPT, referer ? referer : "",
588 wwwauth ? wwwauth : "",
589 proxyauth ? proxyauth : "",
592 opt.user_header ? opt.user_header : "");
593 DEBUGP (("---request begin---\n%s---request end---\n", request));
594 /* Free the temporary memory. */
595 FREE_MAYBE (wwwauth);
596 FREE_MAYBE (proxyauth);
598 /* Send the request to server. */
599 num_written = iwrite (sock, request, strlen (request));
602 logprintf (LOG_VERBOSE, _("Failed writing HTTP request: %s.\n"),
604 CLOSE_INVALIDATE (sock);
607 logprintf (LOG_VERBOSE, _("%s request sent, awaiting response... "),
608 u->proxy ? "Proxy" : "HTTP");
609 contlen = contrange = -1;
614 /* Before reading anything, initialize the rbuf. */
615 rbuf_initialize (&rbuf, sock);
619 /* Header-fetching loop. */
627 /* Get the header. */
628 status = header_get (&rbuf, &hdr,
629 /* Disallow continuations for status line. */
630 (hcount == 1 ? HG_NO_CONTINUATIONS : HG_NONE));
632 /* Check for errors. */
633 if (status == HG_EOF && *hdr)
635 /* This used to be an unconditional error, but that was
636 somewhat controversial, because of a large number of
637 broken CGI's that happily "forget" to send the second EOL
638 before closing the connection of a HEAD request.
640 So, the deal is to check whether the header is empty
641 (*hdr is zero if it is); if yes, it means that the
642 previous header was fully retrieved, and that -- most
643 probably -- the request is complete. "...be liberal in
644 what you accept." Oh boy. */
645 logputs (LOG_VERBOSE, "\n");
646 logputs (LOG_NOTQUIET, _("End of file while parsing headers.\n"));
649 FREE_MAYBE (hs->newloc);
650 FREE_MAYBE (all_headers);
651 CLOSE_INVALIDATE (sock);
654 else if (status == HG_ERROR)
656 logputs (LOG_VERBOSE, "\n");
657 logprintf (LOG_NOTQUIET, _("Read error (%s) in headers.\n"),
661 FREE_MAYBE (hs->newloc);
662 FREE_MAYBE (all_headers);
663 CLOSE_INVALIDATE (sock);
667 /* If the headers are to be saved to a file later, save them to
669 if (opt.save_headers)
671 int lh = strlen (hdr);
672 all_headers = (char *)xrealloc (all_headers, all_length + lh + 2);
673 memcpy (all_headers + all_length, hdr, lh);
675 all_headers[all_length++] = '\n';
676 all_headers[all_length] = '\0';
679 /* Print the header if requested. */
680 if (opt.server_response && hcount != 1)
681 logprintf (LOG_VERBOSE, "\n%d %s", hcount, hdr);
683 /* Check for status line. */
687 /* Parse the first line of server response. */
688 statcode = parse_http_status_line (hdr, &error);
689 hs->statcode = statcode;
690 /* Store the descriptive response. */
691 if (statcode == -1) /* malformed response */
693 /* A common reason for "malformed response" error is the
694 case when no data was actually received. Handle this
697 hs->error = xstrdup (_("No data received"));
699 hs->error = xstrdup (_("Malformed status line"));
704 hs->error = xstrdup (_("(no description)"));
706 hs->error = xstrdup (error);
713 logprintf (LOG_VERBOSE, "%d %s", statcode, error);
718 /* Exit on empty header. */
725 /* Try getting content-length. */
726 if (contlen == -1 && !opt.ignore_length)
727 if (header_process (hdr, "Content-Length", header_extract_number,
730 /* Try getting content-type. */
732 if (header_process (hdr, "Content-Type", http_process_type, &type))
734 /* Try getting location. */
736 if (header_process (hdr, "Location", header_strdup, &hs->newloc))
738 /* Try getting last-modified. */
739 if (!hs->remote_time)
740 if (header_process (hdr, "Last-Modified", header_strdup,
743 /* Try getting www-authentication. */
745 if (header_process (hdr, "WWW-Authenticate", header_strdup,
748 /* Check for accept-ranges header. If it contains the word
749 `none', disable the ranges. */
750 if (*dt & ACCEPTRANGES)
753 if (header_process (hdr, "Accept-Ranges", http_process_none, &nonep))
756 *dt &= ~ACCEPTRANGES;
760 /* Try getting content-range. */
763 struct http_process_range_closure closure;
764 if (header_process (hdr, "Content-Range", http_process_range, &closure))
766 contrange = closure.first_byte_pos;
770 /* Check for the `Keep-Alive' header. */
771 if (!http_keep_alive_1)
773 if (header_process (hdr, "Keep-Alive", header_exists,
777 /* Check for `Connection: Keep-Alive'. */
778 if (!http_keep_alive_2)
780 if (header_process (hdr, "Connection", http_process_connection,
788 logputs (LOG_VERBOSE, "\n");
791 && (http_keep_alive_1 || http_keep_alive_2))
793 if (keep_alive && !reused_connection)
794 register_persistent (u->host, u->port, sock);
796 if ((statcode == HTTP_STATUS_UNAUTHORIZED)
799 /* Authorization is required. */
804 if (auth_tried_already)
806 /* If we have tried it already, then there is not point
808 logputs (LOG_NOTQUIET, _("Authorization failed.\n"));
809 free (authenticate_h);
812 else if (!known_authentication_scheme_p (authenticate_h))
814 free (authenticate_h);
815 logputs (LOG_NOTQUIET, _("Unknown authentication scheme.\n"));
820 auth_tried_already = 1;
824 /* We do not need this anymore. */
827 free (authenticate_h);
828 authenticate_h = NULL;
831 /* 20x responses are counted among successful by default. */
832 if (H_20X (statcode))
835 if (type && !strncasecmp (type, TEXTHTML_S, strlen (TEXTHTML_S)))
838 /* We don't assume text/html by default. */
841 if (opt.html_extension && (*dt & TEXTHTML))
842 /* -E / --html-extension / html_extension = on was specified, and this is a
843 text/html file. If some case-insensitive variation on ".htm[l]" isn't
844 already the file's suffix, tack on ".html". */
846 char* last_period_in_local_filename = strrchr(u->local, '.');
848 if (last_period_in_local_filename == NULL ||
849 !(strcasecmp(last_period_in_local_filename, ".htm") == EQ ||
850 strcasecmp(last_period_in_local_filename, ".html") == EQ))
852 size_t local_filename_len = strlen(u->local);
854 u->local = xrealloc(u->local, local_filename_len + sizeof(".html"));
855 strcpy(u->local + local_filename_len, ".html");
857 *dt |= ADDED_HTML_EXTENSION;
863 else if (contrange != hs->restval ||
864 (H_PARTIAL (statcode) && contrange == -1))
866 /* This means the whole request was somehow misunderstood by the
869 FREE_MAYBE (hs->newloc);
870 FREE_MAYBE (all_headers);
871 CLOSE_INVALIDATE (sock);
878 contlen += contrange;
880 contrange = -1; /* If conent-length was not sent,
881 content-range will be ignored. */
883 hs->contlen = contlen;
885 /* Return if redirected. */
886 if (H_REDIRECTED (statcode) || statcode == HTTP_STATUS_MULTIPLE_CHOICES)
888 /* RFC2068 says that in case of the 300 (multiple choices)
889 response, the server can output a preferred URL through
890 `Location' header; otherwise, the request should be treated
891 like GET. So, if the location is set, it will be a
892 redirection; otherwise, just proceed normally. */
893 if (statcode == HTTP_STATUS_MULTIPLE_CHOICES && !hs->newloc)
897 logprintf (LOG_VERBOSE,
898 _("Location: %s%s\n"),
899 hs->newloc ? hs->newloc : _("unspecified"),
900 hs->newloc ? _(" [following]") : "");
903 FREE_MAYBE (all_headers);
909 if ((*dt & RETROKF) && !opt.server_response)
911 /* No need to print this output if the body won't be
912 downloaded at all, or if the original server response is
914 logputs (LOG_VERBOSE, _("Length: "));
917 logputs (LOG_VERBOSE, legible (contlen));
919 logprintf (LOG_VERBOSE, _(" (%s to go)"),
920 legible (contlen - contrange));
923 logputs (LOG_VERBOSE,
924 opt.ignore_length ? _("ignored") : _("unspecified"));
926 logprintf (LOG_VERBOSE, " [%s]\n", type);
928 logputs (LOG_VERBOSE, "\n");
932 type = NULL; /* We don't need it any more. */
934 /* Return if we have no intention of further downloading. */
935 if (!(*dt & RETROKF) || (*dt & HEAD_ONLY))
937 /* In case someone cares to look... */
941 FREE_MAYBE (all_headers);
946 /* Open the local file. */
949 mkalldirs (u->local);
951 rotate_backups (u->local);
952 fp = fopen (u->local, hs->restval ? "ab" : "wb");
955 logprintf (LOG_NOTQUIET, "%s: %s\n", u->local, strerror (errno));
957 FREE_MAYBE (all_headers);
966 /* This will silently fail for streams that don't correspond
967 to regular files, but that's OK. */
973 /* #### This confuses the code that checks for file size. There
974 should be some overhead information. */
975 if (opt.save_headers)
976 fwrite (all_headers, 1, all_length, fp);
978 /* Get the contents of the document. */
979 hs->res = get_contents (sock, fp, &hs->len, hs->restval,
980 (contlen != -1 ? contlen : 0),
982 hs->dltime = elapsed_time ();
984 /* Close or flush the file. We have to be careful to check for
985 error here. Checking the result of fwrite() is not enough --
986 errors could go unnoticed! */
989 flush_res = fclose (fp);
991 flush_res = fflush (fp);
992 if (flush_res == EOF)
995 FREE_MAYBE (all_headers);
1002 /* The genuine HTTP loop! This is the part where the retrieval is
1003 retried, and retried, and retried, and... */
1005 http_loop (struct urlinfo *u, char **newloc, int *dt)
1007 static int first_retrieval = 1;
1010 int use_ts, got_head = 0; /* time-stamping info */
1011 char *filename_plus_orig_suffix;
1012 char *local_filename = NULL;
1013 char *tms, *suf, *locf, *tmrate;
1015 time_t tml = -1, tmr = -1; /* local and remote time-stamps */
1016 long local_size = 0; /* the size of the local file */
1017 size_t filename_len;
1018 struct http_stat hstat; /* HTTP status */
1023 /* Warn on (likely bogus) wildcard usage in HTTP. Don't use
1024 has_wildcards_p because it would also warn on `?', and we know that
1025 shows up in CGI paths a *lot*. */
1026 if (strchr (u->url, '*'))
1027 logputs (LOG_VERBOSE, _("Warning: wildcards not supported in HTTP.\n"));
1029 /* Determine the local filename. */
1031 u->local = url_filename (u->proxy ? u->proxy : u);
1033 if (!opt.output_document)
1036 locf = opt.output_document;
1038 /* Yuck. Multiple returns suck. We need to remember to free() the space we
1039 xmalloc() here before EACH return. This is one reason it's better to set
1040 flags that influence flow control and then return once at the end. */
1041 filename_len = strlen(u->local);
1042 filename_plus_orig_suffix = xmalloc(filename_len + sizeof(".orig"));
1044 if (opt.noclobber && file_exists_p (u->local))
1046 /* If opt.noclobber is turned on and file already exists, do not
1047 retrieve the file */
1048 logprintf (LOG_VERBOSE, _("\
1049 File `%s' already there, will not retrieve.\n"), u->local);
1050 /* If the file is there, we suppose it's retrieved OK. */
1053 /* #### Bogusness alert. */
1054 /* If its suffix is "html" or (yuck!) "htm", we suppose it's
1055 text/html, a harmless lie. */
1056 if (((suf = suffix (u->local)) != NULL)
1057 && (!strcmp (suf, "html") || !strcmp (suf, "htm")))
1060 free(filename_plus_orig_suffix); /* must precede every return! */
1061 /* Another harmless lie: */
1066 if (opt.timestamping)
1068 boolean local_dot_orig_file_exists = FALSE;
1070 if (opt.backup_converted)
1071 /* If -K is specified, we'll act on the assumption that it was specified
1072 last time these files were downloaded as well, and instead of just
1073 comparing local file X against server file X, we'll compare local
1074 file X.orig (if extant, else X) against server file X. If -K
1075 _wasn't_ specified last time, or the server contains files called
1076 *.orig, -N will be back to not operating correctly with -k. */
1078 /* Would a single s[n]printf() call be faster? --dan
1080 It wouldn't. sprintf() is horribly slow. At one point I
1081 profiled Wget, and found that a measurable and
1082 non-negligible amount of time was lost calling sprintf()
1083 in url.c. Replacing sprintf with inline calls to
1084 strcpy() and long_to_string() made a difference.
1086 strcpy(filename_plus_orig_suffix, u->local);
1087 strcpy(filename_plus_orig_suffix + filename_len, ".orig");
1089 /* Try to stat() the .orig file. */
1090 if (stat(filename_plus_orig_suffix, &st) == 0)
1092 local_dot_orig_file_exists = TRUE;
1093 local_filename = filename_plus_orig_suffix;
1097 if (!local_dot_orig_file_exists)
1098 /* Couldn't stat() <file>.orig, so try to stat() <file>. */
1099 if (stat (u->local, &st) == 0)
1100 local_filename = u->local;
1102 if (local_filename != NULL)
1103 /* There was a local file, so we'll check later to see if the version
1104 the server has is the same version we already have, allowing us to
1109 local_size = st.st_size;
1113 /* Reset the counter. */
1115 *dt = 0 | ACCEPTRANGES;
1119 /* Increment the pass counter. */
1121 /* Wait before the retrieval (unless this is the very first
1123 Check if we are retrying or not, wait accordingly - HEH */
1124 if (!first_retrieval && (opt.wait || (count && opt.waitretry)))
1128 if (count<opt.waitretry)
1131 sleep(opt.waitretry);
1136 if (first_retrieval)
1137 first_retrieval = 0;
1138 /* Get the current time string. */
1139 tms = time_str (NULL);
1140 /* Print fetch message, if opt.verbose. */
1143 char *hurl = str_url (u->proxy ? u->proxy : u, 1);
1147 sprintf (tmp, _("(try:%2d)"), count);
1148 logprintf (LOG_VERBOSE, "--%s-- %s\n %s => `%s'\n",
1149 tms, hurl, tmp, locf);
1151 ws_changetitle (hurl, 1);
1156 /* Default document type is empty. However, if spider mode is
1157 on or time-stamping is employed, HEAD_ONLY commands is
1158 encoded within *dt. */
1159 if (opt.spider || (use_ts && !got_head))
1163 /* Assume no restarting. */
1165 /* Decide whether or not to restart. */
1166 if (((count > 1 && (*dt & ACCEPTRANGES)) || opt.always_rest)
1167 && file_exists_p (u->local))
1168 if (stat (u->local, &st) == 0)
1169 hstat.restval = st.st_size;
1170 /* Decide whether to send the no-cache directive. */
1171 if (u->proxy && (count > 1 || (opt.proxy_cache == 0)))
1172 *dt |= SEND_NOCACHE;
1174 *dt &= ~SEND_NOCACHE;
1176 /* Try fetching the document, or at least its head. :-) */
1177 err = gethttp (u, &hstat, dt);
1179 /* It's unfortunate that wget determines the local filename before finding
1180 out the Content-Type of the file. Barring a major restructuring of the
1181 code, we need to re-set locf here, since gethttp() may have xrealloc()d
1182 u->local to tack on ".html". */
1183 if (!opt.output_document)
1186 locf = opt.output_document;
1189 tms = time_str (NULL);
1190 /* Get the new location (with or without the redirection). */
1192 *newloc = xstrdup (hstat.newloc);
1195 case HERR: case HEOF: case CONSOCKERR: case CONCLOSED:
1196 case CONERROR: case READERR: case WRITEFAILED:
1198 /* Non-fatal errors continue executing the loop, which will
1199 bring them to "while" statement at the end, to judge
1200 whether the number of tries was exceeded. */
1202 printwhat (count, opt.ntry);
1205 case HOSTERR: case CONREFUSED: case PROXERR: case AUTHFAILED:
1206 /* Fatal errors just return from the function. */
1208 free(filename_plus_orig_suffix); /* must precede every return! */
1211 case FWRITEERR: case FOPENERR:
1212 /* Another fatal error. */
1213 logputs (LOG_VERBOSE, "\n");
1214 logprintf (LOG_NOTQUIET, _("Cannot write to `%s' (%s).\n"),
1215 u->local, strerror (errno));
1217 free(filename_plus_orig_suffix); /* must precede every return! */
1221 /* Return the new location to the caller. */
1224 logprintf (LOG_NOTQUIET,
1225 _("ERROR: Redirection (%d) without location.\n"),
1227 free(filename_plus_orig_suffix); /* must precede every return! */
1231 free(filename_plus_orig_suffix); /* must precede every return! */
1235 /* Deal with you later. */
1238 /* All possibilities should have been exhausted. */
1241 if (!(*dt & RETROKF))
1245 /* #### Ugly ugly ugly! */
1246 char *hurl = str_url (u->proxy ? u->proxy : u, 1);
1247 logprintf (LOG_NONVERBOSE, "%s:\n", hurl);
1250 logprintf (LOG_NOTQUIET, _("%s ERROR %d: %s.\n"),
1251 tms, hstat.statcode, hstat.error);
1252 logputs (LOG_VERBOSE, "\n");
1254 free(filename_plus_orig_suffix); /* must precede every return! */
1258 /* Did we get the time-stamp? */
1261 if (opt.timestamping && !hstat.remote_time)
1263 logputs (LOG_NOTQUIET, _("\
1264 Last-modified header missing -- time-stamps turned off.\n"));
1266 else if (hstat.remote_time)
1268 /* Convert the date-string into struct tm. */
1269 tmr = http_atotm (hstat.remote_time);
1270 if (tmr == (time_t) (-1))
1271 logputs (LOG_VERBOSE, _("\
1272 Last-modified header invalid -- time-stamp ignored.\n"));
1276 /* The time-stamping section. */
1281 use_ts = 0; /* no more time-stamping */
1282 count = 0; /* the retrieve count for HEAD is
1284 if (hstat.remote_time && tmr != (time_t) (-1))
1286 /* Now time-stamping can be used validly. Time-stamping
1287 means that if the sizes of the local and remote file
1288 match, and local file is newer than the remote file,
1289 it will not be retrieved. Otherwise, the normal
1290 download procedure is resumed. */
1292 (hstat.contlen == -1 || local_size == hstat.contlen))
1294 logprintf (LOG_VERBOSE, _("\
1295 Server file no newer than local file `%s' -- not retrieving.\n\n"),
1298 free(filename_plus_orig_suffix);/*must precede every return!*/
1301 else if (tml >= tmr)
1302 logprintf (LOG_VERBOSE, _("\
1303 The sizes do not match (local %ld) -- retrieving.\n"), local_size);
1305 logputs (LOG_VERBOSE,
1306 _("Remote file is newer, retrieving.\n"));
1312 && (tmr != (time_t) (-1))
1314 && ((hstat.len == hstat.contlen) ||
1315 ((hstat.res == 0) &&
1316 ((hstat.contlen == -1) ||
1317 (hstat.len >= hstat.contlen && !opt.kill_longer)))))
1319 touch (u->local, tmr);
1321 /* End of time-stamping section. */
1325 logprintf (LOG_NOTQUIET, "%d %s\n\n", hstat.statcode, hstat.error);
1326 free(filename_plus_orig_suffix); /* must precede every return! */
1330 /* It is now safe to free the remainder of hstat, since the
1331 strings within it will no longer be used. */
1334 tmrate = rate (hstat.len - hstat.restval, hstat.dltime);
1336 if (hstat.len == hstat.contlen)
1340 logprintf (LOG_VERBOSE,
1341 _("%s (%s) - `%s' saved [%ld/%ld]\n\n"),
1342 tms, tmrate, locf, hstat.len, hstat.contlen);
1343 logprintf (LOG_NONVERBOSE,
1344 "%s URL:%s [%ld/%ld] -> \"%s\" [%d]\n",
1345 tms, u->url, hstat.len, hstat.contlen, locf, count);
1348 downloaded_increase (hstat.len);
1350 /* Remember that we downloaded the file for later ".orig" code. */
1351 if (*dt & ADDED_HTML_EXTENSION)
1352 downloaded_file(FILE_DOWNLOADED_AND_HTML_EXTENSION_ADDED, locf);
1354 downloaded_file(FILE_DOWNLOADED_NORMALLY, locf);
1356 free(filename_plus_orig_suffix); /* must precede every return! */
1359 else if (hstat.res == 0) /* No read error */
1361 if (hstat.contlen == -1) /* We don't know how much we were supposed
1362 to get, so assume we succeeded. */
1366 logprintf (LOG_VERBOSE,
1367 _("%s (%s) - `%s' saved [%ld]\n\n"),
1368 tms, tmrate, locf, hstat.len);
1369 logprintf (LOG_NONVERBOSE,
1370 "%s URL:%s [%ld] -> \"%s\" [%d]\n",
1371 tms, u->url, hstat.len, locf, count);
1374 downloaded_increase (hstat.len);
1376 /* Remember that we downloaded the file for later ".orig" code. */
1377 if (*dt & ADDED_HTML_EXTENSION)
1378 downloaded_file(FILE_DOWNLOADED_AND_HTML_EXTENSION_ADDED, locf);
1380 downloaded_file(FILE_DOWNLOADED_NORMALLY, locf);
1382 free(filename_plus_orig_suffix); /* must precede every return! */
1385 else if (hstat.len < hstat.contlen) /* meaning we lost the
1386 connection too soon */
1388 logprintf (LOG_VERBOSE,
1389 _("%s (%s) - Connection closed at byte %ld. "),
1390 tms, tmrate, hstat.len);
1391 printwhat (count, opt.ntry);
1394 else if (!opt.kill_longer) /* meaning we got more than expected */
1396 logprintf (LOG_VERBOSE,
1397 _("%s (%s) - `%s' saved [%ld/%ld])\n\n"),
1398 tms, tmrate, locf, hstat.len, hstat.contlen);
1399 logprintf (LOG_NONVERBOSE,
1400 "%s URL:%s [%ld/%ld] -> \"%s\" [%d]\n",
1401 tms, u->url, hstat.len, hstat.contlen, locf, count);
1403 downloaded_increase (hstat.len);
1405 /* Remember that we downloaded the file for later ".orig" code. */
1406 if (*dt & ADDED_HTML_EXTENSION)
1407 downloaded_file(FILE_DOWNLOADED_AND_HTML_EXTENSION_ADDED, locf);
1409 downloaded_file(FILE_DOWNLOADED_NORMALLY, locf);
1411 free(filename_plus_orig_suffix); /* must precede every return! */
1414 else /* the same, but not accepted */
1416 logprintf (LOG_VERBOSE,
1417 _("%s (%s) - Connection closed at byte %ld/%ld. "),
1418 tms, tmrate, hstat.len, hstat.contlen);
1419 printwhat (count, opt.ntry);
1423 else /* now hstat.res can only be -1 */
1425 if (hstat.contlen == -1)
1427 logprintf (LOG_VERBOSE,
1428 _("%s (%s) - Read error at byte %ld (%s)."),
1429 tms, tmrate, hstat.len, strerror (errno));
1430 printwhat (count, opt.ntry);
1433 else /* hstat.res == -1 and contlen is given */
1435 logprintf (LOG_VERBOSE,
1436 _("%s (%s) - Read error at byte %ld/%ld (%s). "),
1437 tms, tmrate, hstat.len, hstat.contlen,
1439 printwhat (count, opt.ntry);
1446 while (!opt.ntry || (count < opt.ntry));
1447 free(filename_plus_orig_suffix); /* must precede every return! */
1451 /* Converts struct tm to time_t, assuming the data in tm is UTC rather
1452 than local timezone (mktime assumes the latter).
1454 Contributed by Roger Beeman <beeman@cisco.com>, with the help of
1455 Mark Baushke <mdb@cisco.com> and the rest of the Gurus at CISCO. */
1457 mktime_from_utc (struct tm *t)
1464 tb = mktime (gmtime (&tl));
1465 return (tl <= tb ? (tl + (tl - tb)) : (tl - (tb - tl)));
1468 /* Check whether the result of strptime() indicates success.
1469 strptime() returns the pointer to how far it got to in the string.
1470 The processing has been successful if the string is at `GMT' or
1471 `+X', or at the end of the string.
1473 In extended regexp parlance, the function returns 1 if P matches
1474 "^ *(GMT|[+-][0-9]|$)", 0 otherwise. P being NULL (a valid result of
1475 strptime()) is considered a failure and 0 is returned. */
1481 while (ISSPACE (*p))
1484 || (p[0] == 'G' && p[1] == 'M' && p[2] == 'T')
1485 || ((p[0] == '+' || p[1] == '-') && ISDIGIT (p[1])))
1491 /* Convert TIME_STRING time to time_t. TIME_STRING can be in any of
1492 the three formats RFC2068 allows the HTTP servers to emit --
1493 RFC1123-date, RFC850-date or asctime-date. Timezones are ignored,
1496 We use strptime() to recognize various dates, which makes it a
1497 little bit slacker than the RFC1123/RFC850/asctime (e.g. it always
1498 allows shortened dates and months, one-digit days, etc.). It also
1499 allows more than one space anywhere where the specs require one SP.
1500 The routine should probably be even more forgiving (as recommended
1501 by RFC2068), but I do not have the time to write one.
1503 Return the computed time_t representation, or -1 if all the
1506 Needless to say, what we *really* need here is something like
1507 Marcus Hennecke's atotm(), which is forgiving, fast, to-the-point,
1508 and does not use strptime(). atotm() is to be found in the sources
1509 of `phttpd', a little-known HTTP server written by Peter Erikson. */
1511 http_atotm (char *time_string)
1515 /* Roger Beeman says: "This function dynamically allocates struct tm
1516 t, but does no initialization. The only field that actually
1517 needs initialization is tm_isdst, since the others will be set by
1518 strptime. Since strptime does not set tm_isdst, it will return
1519 the data structure with whatever data was in tm_isdst to begin
1520 with. For those of us in timezones where DST can occur, there
1521 can be a one hour shift depending on the previous contents of the
1522 data area where the data structure is allocated." */
1525 /* Note that under foreign locales Solaris strptime() fails to
1526 recognize English dates, which renders this function useless. I
1527 assume that other non-GNU strptime's are plagued by the same
1528 disease. We solve this by setting only LC_MESSAGES in
1529 i18n_initialize(), instead of LC_ALL.
1531 Another solution could be to temporarily set locale to C, invoke
1532 strptime(), and restore it back. This is slow and dirty,
1533 however, and locale support other than LC_MESSAGES can mess other
1534 things, so I rather chose to stick with just setting LC_MESSAGES.
1536 Also note that none of this is necessary under GNU strptime(),
1537 because it recognizes both international and local dates. */
1539 /* NOTE: We don't use `%n' for white space, as OSF's strptime uses
1540 it to eat all white space up to (and including) a newline, and
1541 the function fails if there is no newline (!).
1543 Let's hope all strptime() implementations use ` ' to skip *all*
1544 whitespace instead of just one (it works that way on all the
1545 systems I've tested it on). */
1547 /* RFC1123: Thu, 29 Jan 1998 22:12:57 */
1548 if (check_end (strptime (time_string, "%a, %d %b %Y %T", &t)))
1549 return mktime_from_utc (&t);
1550 /* RFC850: Thu, 29-Jan-98 22:12:57 */
1551 if (check_end (strptime (time_string, "%a, %d-%b-%y %T", &t)))
1552 return mktime_from_utc (&t);
1553 /* asctime: Thu Jan 29 22:12:57 1998 */
1554 if (check_end (strptime (time_string, "%a %b %d %T %Y", &t)))
1555 return mktime_from_utc (&t);
1560 /* Authorization support: We support two authorization schemes:
1562 * `Basic' scheme, consisting of base64-ing USER:PASSWORD string;
1564 * `Digest' scheme, added by Junio Hamano <junio@twinsun.com>,
1565 consisting of answering to the server's challenge with the proper
1568 /* How many bytes it will take to store LEN bytes in base64. */
1569 #define BASE64_LENGTH(len) (4 * (((len) + 2) / 3))
1571 /* Encode the string S of length LENGTH to base64 format and place it
1572 to STORE. STORE will be 0-terminated, and must point to a writable
1573 buffer of at least 1+BASE64_LENGTH(length) bytes. */
1575 base64_encode (const char *s, char *store, int length)
1577 /* Conversion table. */
1578 static char tbl[64] = {
1579 'A','B','C','D','E','F','G','H',
1580 'I','J','K','L','M','N','O','P',
1581 'Q','R','S','T','U','V','W','X',
1582 'Y','Z','a','b','c','d','e','f',
1583 'g','h','i','j','k','l','m','n',
1584 'o','p','q','r','s','t','u','v',
1585 'w','x','y','z','0','1','2','3',
1586 '4','5','6','7','8','9','+','/'
1589 unsigned char *p = (unsigned char *)store;
1591 /* Transform the 3x8 bits to 4x6 bits, as required by base64. */
1592 for (i = 0; i < length; i += 3)
1594 *p++ = tbl[s[0] >> 2];
1595 *p++ = tbl[((s[0] & 3) << 4) + (s[1] >> 4)];
1596 *p++ = tbl[((s[1] & 0xf) << 2) + (s[2] >> 6)];
1597 *p++ = tbl[s[2] & 0x3f];
1600 /* Pad the result if necessary... */
1601 if (i == length + 1)
1603 else if (i == length + 2)
1604 *(p - 1) = *(p - 2) = '=';
1605 /* ...and zero-terminate it. */
1609 /* Create the authentication header contents for the `Basic' scheme.
1610 This is done by encoding the string `USER:PASS' in base64 and
1611 prepending `HEADER: Basic ' to it. */
1613 basic_authentication_encode (const char *user, const char *passwd,
1616 char *t1, *t2, *res;
1617 int len1 = strlen (user) + 1 + strlen (passwd);
1618 int len2 = BASE64_LENGTH (len1);
1620 t1 = (char *)alloca (len1 + 1);
1621 sprintf (t1, "%s:%s", user, passwd);
1622 t2 = (char *)alloca (1 + len2);
1623 base64_encode (t1, t2, len1);
1624 res = (char *)malloc (len2 + 11 + strlen (header));
1625 sprintf (res, "%s: Basic %s\r\n", header, t2);
1631 /* Parse HTTP `WWW-Authenticate:' header. AU points to the beginning
1632 of a field in such a header. If the field is the one specified by
1633 ATTR_NAME ("realm", "opaque", and "nonce" are used by the current
1634 digest authorization code), extract its value in the (char*)
1635 variable pointed by RET. Returns negative on a malformed header,
1636 or number of bytes that have been parsed by this call. */
1638 extract_header_attr (const char *au, const char *attr_name, char **ret)
1640 const char *cp, *ep;
1644 if (strncmp (cp, attr_name, strlen (attr_name)) == 0)
1646 cp += strlen (attr_name);
1649 cp += skip_lws (cp);
1654 cp += skip_lws (cp);
1659 for (ep = cp; *ep && *ep != '\"'; ep++)
1664 *ret = strdupdelim (cp, ep);
1671 /* Response value needs to be in lowercase, so we cannot use HEXD2ASC
1672 from url.h. See RFC 2069 2.1.2 for the syntax of response-digest. */
1673 #define HEXD2asc(x) (((x) < 10) ? ((x) + '0') : ((x) - 10 + 'a'))
1675 /* Dump the hexadecimal representation of HASH to BUF. HASH should be
1676 an array of 16 bytes containing the hash keys, and BUF should be a
1677 buffer of 33 writable characters (32 for hex digits plus one for
1678 zero termination). */
1680 dump_hash (unsigned char *buf, const unsigned char *hash)
1684 for (i = 0; i < MD5_HASHLEN; i++, hash++)
1686 *buf++ = HEXD2asc (*hash >> 4);
1687 *buf++ = HEXD2asc (*hash & 0xf);
1692 /* Take the line apart to find the challenge, and compose a digest
1693 authorization header. See RFC2069 section 2.1.2. */
1695 digest_authentication_encode (const char *au, const char *user,
1696 const char *passwd, const char *method,
1699 static char *realm, *opaque, *nonce;
1704 { "realm", &realm },
1705 { "opaque", &opaque },
1710 realm = opaque = nonce = NULL;
1712 au += 6; /* skip over `Digest' */
1717 au += skip_lws (au);
1718 for (i = 0; i < ARRAY_SIZE (options); i++)
1720 int skip = extract_header_attr (au, options[i].name,
1721 options[i].variable);
1725 FREE_MAYBE (opaque);
1735 if (i == ARRAY_SIZE (options))
1737 while (*au && *au != '=')
1741 au += skip_lws (au);
1745 while (*au && *au != '\"')
1752 while (*au && *au != ',')
1757 if (!realm || !nonce || !user || !passwd || !path || !method)
1760 FREE_MAYBE (opaque);
1765 /* Calculate the digest value. */
1768 unsigned char hash[MD5_HASHLEN];
1769 unsigned char a1buf[MD5_HASHLEN * 2 + 1], a2buf[MD5_HASHLEN * 2 + 1];
1770 unsigned char response_digest[MD5_HASHLEN * 2 + 1];
1772 /* A1BUF = H(user ":" realm ":" password) */
1773 md5_init_ctx (&ctx);
1774 md5_process_bytes (user, strlen (user), &ctx);
1775 md5_process_bytes (":", 1, &ctx);
1776 md5_process_bytes (realm, strlen (realm), &ctx);
1777 md5_process_bytes (":", 1, &ctx);
1778 md5_process_bytes (passwd, strlen (passwd), &ctx);
1779 md5_finish_ctx (&ctx, hash);
1780 dump_hash (a1buf, hash);
1782 /* A2BUF = H(method ":" path) */
1783 md5_init_ctx (&ctx);
1784 md5_process_bytes (method, strlen (method), &ctx);
1785 md5_process_bytes (":", 1, &ctx);
1786 md5_process_bytes (path, strlen (path), &ctx);
1787 md5_finish_ctx (&ctx, hash);
1788 dump_hash (a2buf, hash);
1790 /* RESPONSE_DIGEST = H(A1BUF ":" nonce ":" A2BUF) */
1791 md5_init_ctx (&ctx);
1792 md5_process_bytes (a1buf, MD5_HASHLEN * 2, &ctx);
1793 md5_process_bytes (":", 1, &ctx);
1794 md5_process_bytes (nonce, strlen (nonce), &ctx);
1795 md5_process_bytes (":", 1, &ctx);
1796 md5_process_bytes (a2buf, MD5_HASHLEN * 2, &ctx);
1797 md5_finish_ctx (&ctx, hash);
1798 dump_hash (response_digest, hash);
1800 res = (char*) xmalloc (strlen (user)
1805 + 2 * MD5_HASHLEN /*strlen (response_digest)*/
1806 + (opaque ? strlen (opaque) : 0)
1808 sprintf (res, "Authorization: Digest \
1809 username=\"%s\", realm=\"%s\", nonce=\"%s\", uri=\"%s\", response=\"%s\"",
1810 user, realm, nonce, path, response_digest);
1813 char *p = res + strlen (res);
1814 strcat (p, ", opaque=\"");
1818 strcat (res, "\r\n");
1822 #endif /* USE_DIGEST */
1825 #define HACK_O_MATIC(line, string_constant) \
1826 (!strncasecmp (line, string_constant, sizeof (string_constant) - 1) \
1827 && (ISSPACE (line[sizeof (string_constant) - 1]) \
1828 || !line[sizeof (string_constant) - 1]))
1831 known_authentication_scheme_p (const char *au)
1833 return HACK_O_MATIC (au, "Basic")
1834 || HACK_O_MATIC (au, "Digest")
1835 || HACK_O_MATIC (au, "NTLM");
1840 /* Create the HTTP authorization request header. When the
1841 `WWW-Authenticate' response header is seen, according to the
1842 authorization scheme specified in that header (`Basic' and `Digest'
1843 are supported by the current implementation), produce an
1844 appropriate HTTP authorization request header. */
1846 create_authorization_line (const char *au, const char *user,
1847 const char *passwd, const char *method,
1850 char *wwwauth = NULL;
1852 if (!strncasecmp (au, "Basic", 5))
1853 wwwauth = basic_authentication_encode (user, passwd, "Authorization");
1854 if (!strncasecmp (au, "NTLM", 4))
1855 wwwauth = basic_authentication_encode (user, passwd, "Authorization");
1857 else if (!strncasecmp (au, "Digest", 6))
1858 wwwauth = digest_authentication_encode (au, user, passwd, method, path);
1859 #endif /* USE_DIGEST */