2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 2000-2014 Dag-Erling Smørgrav
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer
12 * in this position and unchanged.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. The name of the author may not be used to endorse or promote products
17 * derived from this software without specific prior written permission.
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 * $FreeBSD: head/lib/libfetch/http.c 341072 2018-11-27 16:23:17Z des $
34 * The following copyright applies to the base64 code:
37 * Copyright 1997 Massachusetts Institute of Technology
39 * Permission to use, copy, modify, and distribute this software and
40 * its documentation for any purpose and without fee is hereby
41 * granted, provided that both the above copyright notice and this
42 * permission notice appear in all copies, that both the above
43 * copyright notice and this permission notice appear in all
44 * supporting documentation, and that the name of M.I.T. not be used
45 * in advertising or publicity pertaining to distribution of the
46 * software without specific, written prior permission. M.I.T. makes
47 * no representations about the suitability of this software for any
48 * purpose. It is provided "as is" without express or implied
51 * THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS
52 * ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE,
53 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
54 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
55 * SHALL M.I.T. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
56 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
57 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
58 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
59 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
60 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
61 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
65 #include <sys/param.h>
66 #include <sys/socket.h>
82 #include <openssl/md5.h>
83 #define MD5Init(c) MD5_Init(c)
84 #define MD5Update(c, data, len) MD5_Update(c, data, len)
85 #define MD5Final(md, c) MD5_Final(md, c)
90 #include <netinet/in.h>
91 #include <netinet/tcp.h>
97 /* Maximum number of redirects to follow */
98 #define MAX_REDIRECT 20
100 /* Symbolic names for reply codes we care about */
102 #define HTTP_PARTIAL 206
103 #define HTTP_MOVED_PERM 301
104 #define HTTP_MOVED_TEMP 302
105 #define HTTP_SEE_OTHER 303
106 #define HTTP_NOT_MODIFIED 304
107 #define HTTP_USE_PROXY 305
108 #define HTTP_TEMP_REDIRECT 307
109 #define HTTP_PERM_REDIRECT 308
110 #define HTTP_NEED_AUTH 401
111 #define HTTP_NEED_PROXY_AUTH 407
112 #define HTTP_BAD_RANGE 416
113 #define HTTP_PROTOCOL_ERROR 999
115 #define HTTP_REDIRECT(xyz) ((xyz) == HTTP_MOVED_PERM \
116 || (xyz) == HTTP_MOVED_TEMP \
117 || (xyz) == HTTP_TEMP_REDIRECT \
118 || (xyz) == HTTP_PERM_REDIRECT \
119 || (xyz) == HTTP_USE_PROXY \
120 || (xyz) == HTTP_SEE_OTHER)
122 #define HTTP_ERROR(xyz) ((xyz) >= 400 && (xyz) <= 599)
125 /*****************************************************************************
126 * I/O functions for decoding chunked streams
131 conn_t *conn; /* connection */
132 int chunked; /* chunked mode */
133 char *buf; /* chunk buffer */
134 size_t bufsize; /* size of chunk buffer */
135 size_t buflen; /* amount of data currently in buffer */
136 size_t bufpos; /* current read offset in buffer */
137 int eof; /* end-of-file flag */
138 int error; /* error flag */
139 size_t chunksize; /* remaining size of current chunk */
146 * Get next chunk header
149 http_new_chunk(struct httpio *io)
153 if (fetch_getln(io->conn) == -1)
156 if (io->conn->buflen < 2 || !isxdigit((unsigned char)*io->conn->buf))
159 for (p = io->conn->buf; *p && !isspace((unsigned char)*p); ++p) {
162 if (!isxdigit((unsigned char)*p))
164 if (isdigit((unsigned char)*p)) {
165 io->chunksize = io->chunksize * 16 +
168 io->chunksize = io->chunksize * 16 +
169 10 + tolower((unsigned char)*p) - 'a';
175 io->total += io->chunksize;
176 if (io->chunksize == 0)
177 fprintf(stderr, "%s(): end of last chunk\n", __func__);
179 fprintf(stderr, "%s(): new chunk: %lu (%lu)\n",
180 __func__, (unsigned long)io->chunksize,
181 (unsigned long)io->total);
185 return (io->chunksize);
189 * Grow the input buffer to at least len bytes
192 http_growbuf(struct httpio *io, size_t len)
196 if (io->bufsize >= len)
199 if ((tmp = realloc(io->buf, len)) == NULL)
207 * Fill the input buffer, do chunk decoding on the fly
210 http_fillbuf(struct httpio *io, size_t len)
220 /* not chunked: just fetch the requested amount */
221 if (io->chunked == 0) {
222 if (http_growbuf(io, len) == -1)
224 if ((nbytes = fetch_read(io->conn, io->buf, len)) == -1) {
233 /* chunked, but we ran out: get the next chunk header */
234 if (io->chunksize == 0) {
235 switch (http_new_chunk(io)) {
245 /* fetch the requested amount, but no more than the current chunk */
246 if (len > io->chunksize)
248 if (http_growbuf(io, len) == -1)
250 if ((nbytes = fetch_read(io->conn, io->buf, len)) == -1) {
256 io->chunksize -= nbytes;
258 if (io->chunksize == 0) {
259 if (fetch_read(io->conn, &ch, 1) != 1 || ch != '\r' ||
260 fetch_read(io->conn, &ch, 1) != 1 || ch != '\n')
271 http_readfn(void *v, char *buf, int len)
273 struct httpio *io = (struct httpio *)v;
282 if (!io->buf || io->bufpos == io->buflen) {
283 if ((rlen = http_fillbuf(io, len)) < 0) {
284 if ((errno = io->error) == EINTR)
287 } else if (rlen == 0) {
292 rlen = io->buflen - io->bufpos;
295 memcpy(buf, io->buf + io->bufpos, rlen);
304 http_writefn(void *v, const char *buf, int len)
306 struct httpio *io = (struct httpio *)v;
308 return (fetch_write(io->conn, buf, len));
315 http_closefn(void *v)
317 struct httpio *io = (struct httpio *)v;
320 r = fetch_close(io->conn);
328 * Wrap a file descriptor up
331 http_funopen(conn_t *conn, int chunked)
336 if ((io = calloc(1, sizeof(*io))) == NULL) {
341 io->chunked = chunked;
342 f = funopen(io, http_readfn, http_writefn, NULL, http_closefn);
352 /*****************************************************************************
353 * Helper functions for talking to the server and parsing its replies
366 hdr_transfer_encoding,
367 hdr_www_authenticate,
368 hdr_proxy_authenticate,
371 /* Names of interesting headers */
376 { hdr_content_length, "Content-Length" },
377 { hdr_content_range, "Content-Range" },
378 { hdr_last_modified, "Last-Modified" },
379 { hdr_location, "Location" },
380 { hdr_transfer_encoding, "Transfer-Encoding" },
381 { hdr_www_authenticate, "WWW-Authenticate" },
382 { hdr_proxy_authenticate, "Proxy-Authenticate" },
383 { hdr_unknown, NULL },
387 * Send a formatted line; optionally echo to terminal
390 http_cmd(conn_t *conn, const char *fmt, ...)
398 len = vasprintf(&msg, fmt, ap);
407 r = fetch_putln(conn, msg, len);
419 * Get and parse status line
422 http_get_reply(conn_t *conn)
426 if (fetch_getln(conn) == -1)
429 * A valid status line looks like "HTTP/m.n xyz reason" where m
430 * and n are the major and minor protocol version numbers and xyz
432 * Unfortunately, there are servers out there (NCSA 1.5.1, to name
433 * just one) that do not send a version number, so we can't rely
434 * on finding one, but if we do, insist on it being 1.0 or 1.1.
435 * We don't care about the reason phrase.
437 if (strncmp(conn->buf, "HTTP", 4) != 0)
438 return (HTTP_PROTOCOL_ERROR);
441 if (p[1] != '1' || p[2] != '.' || (p[3] != '0' && p[3] != '1'))
442 return (HTTP_PROTOCOL_ERROR);
446 !isdigit((unsigned char)p[1]) ||
447 !isdigit((unsigned char)p[2]) ||
448 !isdigit((unsigned char)p[3]))
449 return (HTTP_PROTOCOL_ERROR);
451 conn->err = (p[1] - '0') * 100 + (p[2] - '0') * 10 + (p[3] - '0');
456 * Check a header; if the type matches the given string, return a pointer
457 * to the beginning of the value.
460 http_match(const char *str, const char *hdr)
462 while (*str && *hdr &&
463 tolower((unsigned char)*str++) == tolower((unsigned char)*hdr++))
465 if (*str || *hdr != ':')
467 while (*hdr && isspace((unsigned char)*++hdr))
474 * Get the next header and return the appropriate symbolic code. We
475 * need to read one line ahead for checking for a continuation line
476 * belonging to the current header (continuation lines start with
479 * We get called with a fresh line already in the conn buffer, either
480 * from the previous http_next_header() invocation, or, the first
481 * time, from a fetch_getln() performed by our caller.
483 * This stops when we encounter an empty line (we dont read beyond the header
486 * Note that the "headerbuf" is just a place to return the result. Its
487 * contents are not used for the next call. This means that no cleanup
488 * is needed when ie doing another connection, just call the cleanup when
489 * fully done to deallocate memory.
492 /* Limit the max number of continuation lines to some reasonable value */
493 #define HTTP_MAX_CONT_LINES 10
495 /* Place into which to build a header from one or several lines */
497 char *buf; /* buffer */
498 size_t bufsize; /* buffer size */
499 size_t buflen; /* length of buffer contents */
503 init_http_headerbuf(http_headerbuf_t *buf)
511 clean_http_headerbuf(http_headerbuf_t *buf)
515 init_http_headerbuf(buf);
518 /* Remove whitespace at the end of the buffer */
520 http_conn_trimright(conn_t *conn)
522 while (conn->buflen &&
523 isspace((unsigned char)conn->buf[conn->buflen - 1]))
525 conn->buf[conn->buflen] = '\0';
529 http_next_header(conn_t *conn, http_headerbuf_t *hbuf, const char **p)
534 * Have to do the stripping here because of the first line. So
535 * it's done twice for the subsequent lines. No big deal
537 http_conn_trimright(conn);
538 if (conn->buflen == 0)
541 /* Copy the line to the headerbuf */
542 if (hbuf->bufsize < conn->buflen + 1) {
543 if ((hbuf->buf = realloc(hbuf->buf, conn->buflen + 1)) == NULL)
544 return (hdr_syserror);
545 hbuf->bufsize = conn->buflen + 1;
547 strcpy(hbuf->buf, conn->buf);
548 hbuf->buflen = conn->buflen;
551 * Fetch possible continuation lines. Stop at 1st non-continuation
552 * and leave it in the conn buffer
554 for (i = 0; i < HTTP_MAX_CONT_LINES; i++) {
555 if (fetch_getln(conn) == -1)
556 return (hdr_syserror);
559 * Note: we carry on the idea from the previous version
560 * that a pure whitespace line is equivalent to an empty
561 * one (so it's not continuation and will be handled when
562 * we are called next)
564 http_conn_trimright(conn);
565 if (conn->buf[0] != ' ' && conn->buf[0] != "\t"[0])
568 /* Got a continuation line. Concatenate to previous */
569 len = hbuf->buflen + conn->buflen;
570 if (hbuf->bufsize < len + 1) {
572 if ((hbuf->buf = realloc(hbuf->buf, len + 1)) == NULL)
573 return (hdr_syserror);
574 hbuf->bufsize = len + 1;
576 strcpy(hbuf->buf + hbuf->buflen, conn->buf);
577 hbuf->buflen += conn->buflen;
581 * We could check for malformed headers but we don't really care.
582 * A valid header starts with a token immediately followed by a
583 * colon; a token is any sequence of non-control, non-whitespace
584 * characters except "()<>@,;:\\\"{}".
586 for (i = 0; hdr_names[i].num != hdr_unknown; i++)
587 if ((*p = http_match(hdr_names[i].name, hbuf->buf)) != NULL)
588 return (hdr_names[i].num);
590 return (hdr_unknown);
593 /**************************
594 * [Proxy-]Authenticate header parsing
598 * Read doublequote-delimited string into output buffer obuf (allocated
599 * by caller, whose responsibility it is to ensure that it's big enough)
600 * cp points to the first char after the initial '"'
602 * Returns pointer to the first char after the terminating double quote, or
606 http_parse_headerstring(const char *cp, char *obuf)
610 case 0: /* Unterminated string */
613 case '"': /* Ending quote */
628 /* Http auth challenge schemes */
629 typedef enum {HTTPAS_UNKNOWN, HTTPAS_BASIC,HTTPAS_DIGEST} http_auth_schemes_t;
631 /* Data holder for a Basic or Digest challenge. */
633 http_auth_schemes_t scheme;
640 int nc; /* Nonce count */
641 } http_auth_challenge_t;
644 init_http_auth_challenge(http_auth_challenge_t *b)
646 b->scheme = HTTPAS_UNKNOWN;
647 b->realm = b->qop = b->nonce = b->opaque = b->algo = NULL;
648 b->stale = b->nc = 0;
652 clean_http_auth_challenge(http_auth_challenge_t *b)
664 init_http_auth_challenge(b);
667 /* Data holder for an array of challenges offered in an http response. */
668 #define MAX_CHALLENGES 10
670 http_auth_challenge_t *challenges[MAX_CHALLENGES];
671 int count; /* Number of parsed challenges in the array */
672 int valid; /* We did parse an authenticate header */
673 } http_auth_challenges_t;
676 init_http_auth_challenges(http_auth_challenges_t *cs)
679 for (i = 0; i < MAX_CHALLENGES; i++)
680 cs->challenges[i] = NULL;
681 cs->count = cs->valid = 0;
685 clean_http_auth_challenges(http_auth_challenges_t *cs)
688 /* We rely on non-zero pointers being allocated, not on the count */
689 for (i = 0; i < MAX_CHALLENGES; i++) {
690 if (cs->challenges[i] != NULL) {
691 clean_http_auth_challenge(cs->challenges[i]);
692 free(cs->challenges[i]);
695 init_http_auth_challenges(cs);
699 * Enumeration for lexical elements. Separators will be returned as their own
702 typedef enum {HTTPHL_WORD=256, HTTPHL_STRING=257, HTTPHL_END=258,
703 HTTPHL_ERROR = 259} http_header_lex_t;
706 * Determine what kind of token comes next and return possible value
707 * in buf, which is supposed to have been allocated big enough by
708 * caller. Advance input pointer and return element type.
711 http_header_lex(const char **cpp, char *buf)
714 /* Eat initial whitespace */
715 *cpp += strspn(*cpp, " \t");
720 if (**cpp == ',' || **cpp == '=')
721 return (*((*cpp)++));
725 *cpp = http_parse_headerstring(++*cpp, buf);
727 return (HTTPHL_ERROR);
728 return (HTTPHL_STRING);
731 /* Read other token, until separator or whitespace */
732 l = strcspn(*cpp, " \t,=");
733 memcpy(buf, *cpp, l);
736 return (HTTPHL_WORD);
740 * Read challenges from http xxx-authenticate header and accumulate them
741 * in the challenges list structure.
743 * Headers with multiple challenges are specified by rfc2617, but
744 * servers (ie: squid) often send them in separate headers instead,
745 * which in turn is forbidden by the http spec (multiple headers with
746 * the same name are only allowed for pure comma-separated lists, see
749 * We support both approaches anyway
752 http_parse_authenticate(const char *cp, http_auth_challenges_t *cs)
755 http_header_lex_t lex;
756 char *key = malloc(strlen(cp) + 1);
757 char *value = malloc(strlen(cp) + 1);
758 char *buf = malloc(strlen(cp) + 1);
760 if (key == NULL || value == NULL || buf == NULL) {
765 /* In any case we've seen the header and we set the valid bit */
768 /* Need word first */
769 lex = http_header_lex(&cp, key);
770 if (lex != HTTPHL_WORD)
773 /* Loop on challenges */
774 for (; cs->count < MAX_CHALLENGES; cs->count++) {
775 cs->challenges[cs->count] =
776 malloc(sizeof(http_auth_challenge_t));
777 if (cs->challenges[cs->count] == NULL) {
781 init_http_auth_challenge(cs->challenges[cs->count]);
782 if (strcasecmp(key, "basic") == 0) {
783 cs->challenges[cs->count]->scheme = HTTPAS_BASIC;
784 } else if (strcasecmp(key, "digest") == 0) {
785 cs->challenges[cs->count]->scheme = HTTPAS_DIGEST;
787 cs->challenges[cs->count]->scheme = HTTPAS_UNKNOWN;
789 * Continue parsing as basic or digest may
790 * follow, and the syntax is the same for
791 * all. We'll just ignore this one when
792 * looking at the list
796 /* Loop on attributes */
799 lex = http_header_lex(&cp, key);
800 if (lex != HTTPHL_WORD)
804 lex = http_header_lex(&cp, buf);
809 lex = http_header_lex(&cp, value);
810 if (lex != HTTPHL_WORD && lex != HTTPHL_STRING)
813 if (strcasecmp(key, "realm") == 0) {
814 cs->challenges[cs->count]->realm =
816 } else if (strcasecmp(key, "qop") == 0) {
817 cs->challenges[cs->count]->qop =
819 } else if (strcasecmp(key, "nonce") == 0) {
820 cs->challenges[cs->count]->nonce =
822 } else if (strcasecmp(key, "opaque") == 0) {
823 cs->challenges[cs->count]->opaque =
825 } else if (strcasecmp(key, "algorithm") == 0) {
826 cs->challenges[cs->count]->algo =
828 } else if (strcasecmp(key, "stale") == 0) {
829 cs->challenges[cs->count]->stale =
830 strcasecmp(value, "no");
832 /* ignore unknown attributes */
835 /* Comma or Next challenge or End */
836 lex = http_header_lex(&cp, key);
838 * If we get a word here, this is the beginning of the
839 * next challenge. Break the attributes loop
841 if (lex == HTTPHL_WORD)
844 if (lex == HTTPHL_END) {
845 /* End while looking for ',' is normal exit */
850 /* Anything else is an error */
854 } /* End attributes loop */
855 } /* End challenge loop */
858 * Challenges max count exceeded. This really can't happen
859 * with normal data, something's fishy -> error
874 * Parse a last-modified header
877 http_parse_mtime(const char *p, time_t *mtime)
882 strlcpy(locale, setlocale(LC_TIME, NULL), sizeof(locale));
883 setlocale(LC_TIME, "C");
884 r = strptime(p, "%a, %d %b %Y %H:%M:%S GMT", &tm);
886 * Some proxies use UTC in response, but it should still be
887 * parsed. RFC2616 states GMT and UTC are exactly equal for HTTP.
890 r = strptime(p, "%a, %d %b %Y %H:%M:%S UTC", &tm);
891 /* XXX should add support for date-2 and date-3 */
892 setlocale(LC_TIME, locale);
895 DEBUGF("last modified: [%04d-%02d-%02d %02d:%02d:%02d]\n",
896 tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday,
897 tm.tm_hour, tm.tm_min, tm.tm_sec);
898 *mtime = timegm(&tm);
903 * Parse a content-length header
906 http_parse_length(const char *p, off_t *length)
910 for (len = 0; *p && isdigit((unsigned char)*p); ++p)
911 len = len * 10 + (*p - '0');
914 DEBUGF("content length: [%lld]\n", (long long)len);
920 * Parse a content-range header
923 http_parse_range(const char *p, off_t *offset, off_t *length, off_t *size)
925 off_t first, last, len;
927 if (strncasecmp(p, "bytes ", 6) != 0)
934 for (first = 0; *p && isdigit((unsigned char)*p); ++p)
935 first = first * 10 + *p - '0';
938 for (last = 0, ++p; *p && isdigit((unsigned char)*p); ++p)
939 last = last * 10 + *p - '0';
941 if (first > last || *p != '/')
943 for (len = 0, ++p; *p && isdigit((unsigned char)*p); ++p)
944 len = len * 10 + *p - '0';
945 if (*p || len < last - first + 1)
948 DEBUGF("content range: [*/%lld]\n", (long long)len);
951 DEBUGF("content range: [%lld-%lld/%lld]\n",
952 (long long)first, (long long)last, (long long)len);
953 *length = last - first + 1;
961 /*****************************************************************************
962 * Helper functions for authorization
969 http_base64(const char *src)
971 static const char base64[] =
972 "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
973 "abcdefghijklmnopqrstuvwxyz"
980 if ((str = malloc(((l + 2) / 3) * 4 + 1)) == NULL)
986 t = (src[0] << 16) | (src[1] << 8) | src[2];
987 dst[0] = base64[(t >> 18) & 0x3f];
988 dst[1] = base64[(t >> 12) & 0x3f];
989 dst[2] = base64[(t >> 6) & 0x3f];
990 dst[3] = base64[(t >> 0) & 0x3f];
997 t = (src[0] << 16) | (src[1] << 8);
998 dst[0] = base64[(t >> 18) & 0x3f];
999 dst[1] = base64[(t >> 12) & 0x3f];
1000 dst[2] = base64[(t >> 6) & 0x3f];
1007 dst[0] = base64[(t >> 18) & 0x3f];
1008 dst[1] = base64[(t >> 12) & 0x3f];
1009 dst[2] = dst[3] = '=';
1023 * Extract authorization parameters from environment value.
1024 * The value is like scheme:realm:user:pass
1031 } http_auth_params_t;
1034 init_http_auth_params(http_auth_params_t *s)
1036 s->scheme = s->realm = s->user = s->password = NULL;
1040 clean_http_auth_params(http_auth_params_t *s)
1050 init_http_auth_params(s);
1054 http_authfromenv(const char *p, http_auth_params_t *parms)
1058 char *str = strdup(p);
1066 if ((ve = strchr(v, ':')) == NULL)
1070 if ((parms->scheme = strdup(v)) == NULL) {
1076 if ((ve = strchr(v, ':')) == NULL)
1080 if ((parms->realm = strdup(v)) == NULL) {
1086 if ((ve = strchr(v, ':')) == NULL)
1090 if ((parms->user = strdup(v)) == NULL) {
1097 if ((parms->password = strdup(v)) == NULL) {
1104 clean_http_auth_params(parms);
1112 * Digest response: the code to compute the digest is taken from the
1113 * sample implementation in RFC2616
1119 typedef char HASH[HASHLEN];
1120 #define HASHHEXLEN 32
1121 typedef char HASHHEX[HASHHEXLEN+1];
1123 static const char *hexchars = "0123456789abcdef";
1125 CvtHex(IN HASH Bin, OUT HASHHEX Hex)
1130 for (i = 0; i < HASHLEN; i++) {
1131 j = (Bin[i] >> 4) & 0xf;
1132 Hex[i*2] = hexchars[j];
1134 Hex[i*2+1] = hexchars[j];
1136 Hex[HASHHEXLEN] = '\0';
1139 /* calculate H(A1) as per spec */
1143 IN char * pszUserName,
1145 IN char * pszPassword,
1147 IN char * pszCNonce,
1148 OUT HASHHEX SessionKey
1155 MD5Update(&Md5Ctx, pszUserName, strlen(pszUserName));
1156 MD5Update(&Md5Ctx, ":", 1);
1157 MD5Update(&Md5Ctx, pszRealm, strlen(pszRealm));
1158 MD5Update(&Md5Ctx, ":", 1);
1159 MD5Update(&Md5Ctx, pszPassword, strlen(pszPassword));
1160 MD5Final(HA1, &Md5Ctx);
1161 if (strcasecmp(pszAlg, "md5-sess") == 0) {
1164 MD5Update(&Md5Ctx, HA1, HASHLEN);
1165 MD5Update(&Md5Ctx, ":", 1);
1166 MD5Update(&Md5Ctx, pszNonce, strlen(pszNonce));
1167 MD5Update(&Md5Ctx, ":", 1);
1168 MD5Update(&Md5Ctx, pszCNonce, strlen(pszCNonce));
1169 MD5Final(HA1, &Md5Ctx);
1171 CvtHex(HA1, SessionKey);
1174 /* calculate request-digest/response-digest as per HTTP Digest spec */
1177 IN HASHHEX HA1, /* H(A1) */
1178 IN char * pszNonce, /* nonce from server */
1179 IN char * pszNonceCount, /* 8 hex digits */
1180 IN char * pszCNonce, /* client nonce */
1181 IN char * pszQop, /* qop-value: "", "auth", "auth-int" */
1182 IN char * pszMethod, /* method from the request */
1183 IN char * pszDigestUri, /* requested URL */
1184 IN HASHHEX HEntity, /* H(entity body) if qop="auth-int" */
1185 OUT HASHHEX Response /* request-digest or response-digest */
1189 DEBUGF("Calc: HA1[%s] Nonce[%s] qop[%s] method[%s] URI[%s]\n",
1190 HA1, pszNonce, pszQop, pszMethod, pszDigestUri);
1199 MD5Update(&Md5Ctx, pszMethod, strlen(pszMethod));
1200 MD5Update(&Md5Ctx, ":", 1);
1201 MD5Update(&Md5Ctx, pszDigestUri, strlen(pszDigestUri));
1202 if (strcasecmp(pszQop, "auth-int") == 0) {
1203 MD5Update(&Md5Ctx, ":", 1);
1204 MD5Update(&Md5Ctx, HEntity, HASHHEXLEN);
1206 MD5Final(HA2, &Md5Ctx);
1207 CvtHex(HA2, HA2Hex);
1209 // calculate response
1211 MD5Update(&Md5Ctx, HA1, HASHHEXLEN);
1212 MD5Update(&Md5Ctx, ":", 1);
1213 MD5Update(&Md5Ctx, pszNonce, strlen(pszNonce));
1214 MD5Update(&Md5Ctx, ":", 1);
1216 MD5Update(&Md5Ctx, pszNonceCount, strlen(pszNonceCount));
1217 MD5Update(&Md5Ctx, ":", 1);
1218 MD5Update(&Md5Ctx, pszCNonce, strlen(pszCNonce));
1219 MD5Update(&Md5Ctx, ":", 1);
1220 MD5Update(&Md5Ctx, pszQop, strlen(pszQop));
1221 MD5Update(&Md5Ctx, ":", 1);
1223 MD5Update(&Md5Ctx, HA2Hex, HASHHEXLEN);
1224 MD5Final(RespHash, &Md5Ctx);
1225 CvtHex(RespHash, Response);
1229 * Generate/Send a Digest authorization header
1230 * This looks like: [Proxy-]Authorization: credentials
1232 * credentials = "Digest" digest-response
1233 * digest-response = 1#( username | realm | nonce | digest-uri
1234 * | response | [ algorithm ] | [cnonce] |
1235 * [opaque] | [message-qop] |
1236 * [nonce-count] | [auth-param] )
1237 * username = "username" "=" username-value
1238 * username-value = quoted-string
1239 * digest-uri = "uri" "=" digest-uri-value
1240 * digest-uri-value = request-uri ; As specified by HTTP/1.1
1241 * message-qop = "qop" "=" qop-value
1242 * cnonce = "cnonce" "=" cnonce-value
1243 * cnonce-value = nonce-value
1244 * nonce-count = "nc" "=" nc-value
1246 * response = "response" "=" request-digest
1247 * request-digest = <"> 32LHEX <">
1250 http_digest_auth(conn_t *conn, const char *hdr, http_auth_challenge_t *c,
1251 http_auth_params_t *parms, struct url *url)
1254 char noncecount[10];
1256 char *options = NULL;
1258 if (!c->realm || !c->nonce) {
1259 DEBUGF("realm/nonce not set in challenge\n");
1263 c->algo = strdup("");
1265 if (asprintf(&options, "%s%s%s%s",
1266 *c->algo? ",algorithm=" : "", c->algo,
1267 c->opaque? ",opaque=" : "", c->opaque?c->opaque:"") < 0)
1271 c->qop = strdup("");
1276 sprintf(noncecount, "%08x", c->nc);
1277 /* We don't try very hard with the cnonce ... */
1278 sprintf(cnonce, "%x%lx", getpid(), (unsigned long)time(0));
1282 DigestCalcHA1(c->algo, parms->user, c->realm,
1283 parms->password, c->nonce, cnonce, HA1);
1284 DEBUGF("HA1: [%s]\n", HA1);
1286 DigestCalcResponse(HA1, c->nonce, noncecount, cnonce, c->qop,
1287 "GET", url->doc, "", digest);
1290 r = http_cmd(conn, "%s: Digest username=\"%s\",realm=\"%s\","
1291 "nonce=\"%s\",uri=\"%s\",response=\"%s\","
1292 "qop=\"auth\", cnonce=\"%s\", nc=%s%s",
1293 hdr, parms->user, c->realm,
1294 c->nonce, url->doc, digest,
1295 cnonce, noncecount, options);
1297 r = http_cmd(conn, "%s: Digest username=\"%s\",realm=\"%s\","
1298 "nonce=\"%s\",uri=\"%s\",response=\"%s\"%s",
1299 hdr, parms->user, c->realm,
1300 c->nonce, url->doc, digest, options);
1308 * Encode username and password
1311 http_basic_auth(conn_t *conn, const char *hdr, const char *usr, const char *pwd)
1316 DEBUGF("basic: usr: [%s]\n", usr);
1317 DEBUGF("basic: pwd: [%s]\n", pwd);
1318 if (asprintf(&upw, "%s:%s", usr, pwd) == -1)
1320 auth = http_base64(upw);
1324 r = http_cmd(conn, "%s: Basic %s", hdr, auth);
1330 * Chose the challenge to answer and call the appropriate routine to
1331 * produce the header.
1334 http_authorize(conn_t *conn, const char *hdr, http_auth_challenges_t *cs,
1335 http_auth_params_t *parms, struct url *url)
1337 http_auth_challenge_t *digest = NULL;
1340 /* If user or pass are null we're not happy */
1341 if (!parms->user || !parms->password) {
1342 DEBUGF("NULL usr or pass\n");
1346 /* Look for a Digest */
1347 for (i = 0; i < cs->count; i++) {
1348 if (cs->challenges[i]->scheme == HTTPAS_DIGEST)
1349 digest = cs->challenges[i];
1352 /* Error if "Digest" was specified and there is no Digest challenge */
1354 (parms->scheme && strcasecmp(parms->scheme, "digest") == 0)) {
1355 DEBUGF("Digest auth in env, not supported by peer\n");
1359 * If "basic" was specified in the environment, or there is no Digest
1360 * challenge, do the basic thing. Don't need a challenge for this,
1361 * so no need to check basic!=NULL
1364 (parms->scheme && strcasecmp(parms->scheme, "basic") == 0))
1365 return (http_basic_auth(conn,hdr,parms->user,parms->password));
1367 /* Else, prefer digest. We just checked that it's not NULL */
1368 return (http_digest_auth(conn, hdr, digest, parms, url));
1371 /*****************************************************************************
1372 * Helper functions for connecting to a server or proxy
1376 * Connect to the correct HTTP server or proxy.
1379 http_connect(struct url *URL, struct url *purl, const char *flags)
1384 http_headerbuf_t headerbuf;
1396 verbose = CHECK_FLAG('v');
1397 if (CHECK_FLAG('4'))
1400 else if (CHECK_FLAG('6'))
1404 curl = (purl != NULL) ? purl : URL;
1406 if ((conn = fetch_connect(curl->host, curl->port, af, verbose)) == NULL)
1407 /* fetch_connect() has already set an error code */
1409 init_http_headerbuf(&headerbuf);
1410 if (strcmp(URL->scheme, SCHEME_HTTPS) == 0 && purl) {
1411 http_cmd(conn, "CONNECT %s:%d HTTP/1.1",
1412 URL->host, URL->port);
1413 http_cmd(conn, "Host: %s:%d",
1414 URL->host, URL->port);
1416 if (http_get_reply(conn) != HTTP_OK) {
1417 http_seterr(conn->err);
1420 /* Read and discard the rest of the proxy response */
1421 if (fetch_getln(conn) < 0) {
1426 switch ((h = http_next_header(conn, &headerbuf, &p))) {
1431 http_seterr(HTTP_PROTOCOL_ERROR);
1436 } while (h > hdr_end);
1438 if (strcmp(URL->scheme, SCHEME_HTTPS) == 0 &&
1439 fetch_ssl(conn, URL, verbose) == -1) {
1447 setsockopt(conn->sd, IPPROTO_TCP, TCP_NOPUSH, &val, sizeof(val));
1449 clean_http_headerbuf(&headerbuf);
1453 clean_http_headerbuf(&headerbuf);
1460 http_get_proxy(struct url * url, const char *flags)
1465 if (flags != NULL && strchr(flags, 'd') != NULL)
1467 if (fetch_no_proxy_match(url->host))
1469 if (((p = getenv("HTTP_PROXY")) || (p = getenv("http_proxy"))) &&
1470 *p && (purl = fetchParseURL(p))) {
1472 strcpy(purl->scheme, SCHEME_HTTP);
1474 purl->port = fetch_default_proxy_port(purl->scheme);
1475 if (strcmp(purl->scheme, SCHEME_HTTP) == 0)
1483 http_print_html(FILE *out, FILE *in)
1490 while ((line = fgetln(in, &len)) != NULL) {
1491 while (len && isspace((unsigned char)line[len - 1]))
1493 for (p = q = line; q < line + len; ++q) {
1494 if (comment && *q == '-') {
1495 if (q + 2 < line + len &&
1496 strcmp(q, "-->") == 0) {
1500 } else if (tag && !comment && *q == '>') {
1503 } else if (!tag && *q == '<') {
1505 fwrite(p, q - p, 1, out);
1507 if (q + 3 < line + len &&
1508 strcmp(q, "<!--") == 0) {
1515 fwrite(p, q - p, 1, out);
1521 /*****************************************************************************
1526 http_request(struct url *URL, const char *op, struct url_stat *us,
1527 struct url *purl, const char *flags)
1530 return (http_request_body(URL, op, us, purl, flags, NULL, NULL));
1534 * Send a request and process the reply
1536 * XXX This function is way too long, the do..while loop should be split
1537 * XXX off into a separate function.
1540 http_request_body(struct url *URL, const char *op, struct url_stat *us,
1541 struct url *purl, const char *flags, const char *content_type,
1545 char hbuf[MAXHOSTNAMELEN + 7], *host;
1547 struct url *url, *new;
1548 int chunked, direct, ims, noredirect, verbose;
1550 off_t offset, clength, length, size;
1555 struct tm *timestruct;
1556 http_headerbuf_t headerbuf;
1557 http_auth_challenges_t server_challenges;
1558 http_auth_challenges_t proxy_challenges;
1561 /* The following calls don't allocate anything */
1562 init_http_headerbuf(&headerbuf);
1563 init_http_auth_challenges(&server_challenges);
1564 init_http_auth_challenges(&proxy_challenges);
1566 direct = CHECK_FLAG('d');
1567 noredirect = CHECK_FLAG('A');
1568 verbose = CHECK_FLAG('v');
1569 ims = CHECK_FLAG('i');
1571 if (direct && purl) {
1576 /* try the provided URL first */
1582 e = HTTP_PROTOCOL_ERROR;
1594 url->port = fetch_default_port(url->scheme);
1596 /* were we redirected to an FTP URL? */
1597 if (purl == NULL && strcmp(url->scheme, SCHEME_FTP) == 0) {
1598 if (strcmp(op, "GET") == 0)
1599 return (ftp_request(url, "RETR", us, purl, flags));
1600 else if (strcmp(op, "HEAD") == 0)
1601 return (ftp_request(url, "STAT", us, purl, flags));
1604 /* connect to server or proxy */
1605 if ((conn = http_connect(url, purl, flags)) == NULL)
1608 /* append port number only if necessary */
1610 if (url->port != fetch_default_port(url->scheme)) {
1611 snprintf(hbuf, sizeof(hbuf), "%s:%d", host, url->port);
1617 fetch_info("requesting %s://%s%s",
1618 url->scheme, host, url->doc);
1619 if (purl && strcmp(url->scheme, SCHEME_HTTPS) != 0) {
1620 http_cmd(conn, "%s %s://%s%s HTTP/1.1",
1621 op, url->scheme, host, url->doc);
1623 http_cmd(conn, "%s %s HTTP/1.1",
1627 if (ims && url->ims_time) {
1628 timestruct = gmtime((time_t *)&url->ims_time);
1629 (void)strftime(timebuf, 80, "%a, %d %b %Y %T GMT",
1632 fetch_info("If-Modified-Since: %s", timebuf);
1633 http_cmd(conn, "If-Modified-Since: %s", timebuf);
1636 http_cmd(conn, "Host: %s", host);
1639 * Proxy authorization: we only send auth after we received
1640 * a 407 error. We do not first try basic anyway (changed
1641 * when support was added for digest-auth)
1643 if (purl && proxy_challenges.valid) {
1644 http_auth_params_t aparams;
1645 init_http_auth_params(&aparams);
1646 if (*purl->user || *purl->pwd) {
1647 aparams.user = strdup(purl->user);
1648 aparams.password = strdup(purl->pwd);
1649 } else if ((p = getenv("HTTP_PROXY_AUTH")) != NULL &&
1651 if (http_authfromenv(p, &aparams) < 0) {
1652 http_seterr(HTTP_NEED_PROXY_AUTH);
1655 } else if (fetch_netrc_auth(purl) == 0) {
1656 aparams.user = strdup(purl->user);
1657 aparams.password = strdup(purl->pwd);
1659 http_authorize(conn, "Proxy-Authorization",
1660 &proxy_challenges, &aparams, url);
1661 clean_http_auth_params(&aparams);
1665 * Server authorization: we never send "a priori"
1666 * Basic auth, which used to be done if user/pass were
1667 * set in the url. This would be weird because we'd send the
1668 * password in the clear even if Digest is finally to be
1669 * used (it would have made more sense for the
1670 * pre-digest version to do this when Basic was specified
1671 * in the environment)
1673 if (server_challenges.valid) {
1674 http_auth_params_t aparams;
1675 init_http_auth_params(&aparams);
1676 if (*url->user || *url->pwd) {
1677 aparams.user = strdup(url->user);
1678 aparams.password = strdup(url->pwd);
1679 } else if ((p = getenv("HTTP_AUTH")) != NULL &&
1681 if (http_authfromenv(p, &aparams) < 0) {
1682 http_seterr(HTTP_NEED_AUTH);
1685 } else if (fetch_netrc_auth(url) == 0) {
1686 aparams.user = strdup(url->user);
1687 aparams.password = strdup(url->pwd);
1688 } else if (fetchAuthMethod &&
1689 fetchAuthMethod(url) == 0) {
1690 aparams.user = strdup(url->user);
1691 aparams.password = strdup(url->pwd);
1693 http_seterr(HTTP_NEED_AUTH);
1696 http_authorize(conn, "Authorization",
1697 &server_challenges, &aparams, url);
1698 clean_http_auth_params(&aparams);
1702 if ((p = getenv("HTTP_ACCEPT")) != NULL) {
1704 http_cmd(conn, "Accept: %s", p);
1706 http_cmd(conn, "Accept: */*");
1708 if ((p = getenv("HTTP_REFERER")) != NULL && *p != '\0') {
1709 if (strcasecmp(p, "auto") == 0)
1710 http_cmd(conn, "Referer: %s://%s%s",
1711 url->scheme, host, url->doc);
1713 http_cmd(conn, "Referer: %s", p);
1715 if ((p = getenv("HTTP_USER_AGENT")) != NULL) {
1716 /* no User-Agent if defined but empty */
1718 http_cmd(conn, "User-Agent: %s", p);
1720 /* default User-Agent */
1721 http_cmd(conn, "User-Agent: %s " _LIBFETCH_VER,
1724 if (url->offset > 0)
1725 http_cmd(conn, "Range: bytes=%lld-", (long long)url->offset);
1726 http_cmd(conn, "Connection: close");
1729 body_len = strlen(body);
1730 http_cmd(conn, "Content-Length: %zu", body_len);
1731 if (content_type != NULL)
1732 http_cmd(conn, "Content-Type: %s", content_type);
1738 fetch_write(conn, body, body_len);
1741 * Force the queued request to be dispatched. Normally, one
1742 * would do this with shutdown(2) but squid proxies can be
1743 * configured to disallow such half-closed connections. To
1744 * be compatible with such configurations, fiddle with socket
1745 * options to force the pending data to be written.
1748 setsockopt(conn->sd, IPPROTO_TCP, TCP_NOPUSH, &val,
1751 setsockopt(conn->sd, IPPROTO_TCP, TCP_NODELAY, &val,
1755 switch (http_get_reply(conn)) {
1758 case HTTP_NOT_MODIFIED:
1761 case HTTP_MOVED_PERM:
1762 case HTTP_MOVED_TEMP:
1763 case HTTP_TEMP_REDIRECT:
1764 case HTTP_PERM_REDIRECT:
1765 case HTTP_SEE_OTHER:
1766 case HTTP_USE_PROXY:
1768 * Not so fine, but we still have to read the
1769 * headers to get the new location.
1772 case HTTP_NEED_AUTH:
1773 if (server_challenges.valid) {
1775 * We already sent out authorization code,
1776 * so there's nothing more we can do.
1778 http_seterr(conn->err);
1781 /* try again, but send the password this time */
1783 fetch_info("server requires authorization");
1785 case HTTP_NEED_PROXY_AUTH:
1786 if (proxy_challenges.valid) {
1788 * We already sent our proxy
1789 * authorization code, so there's
1790 * nothing more we can do. */
1791 http_seterr(conn->err);
1794 /* try again, but send the password this time */
1796 fetch_info("proxy requires authorization");
1798 case HTTP_BAD_RANGE:
1800 * This can happen if we ask for 0 bytes because
1801 * we already have the whole file. Consider this
1802 * a success for now, and check sizes later.
1805 case HTTP_PROTOCOL_ERROR:
1811 http_seterr(conn->err);
1814 /* fall through so we can get the full error message */
1817 /* get headers. http_next_header expects one line readahead */
1818 if (fetch_getln(conn) == -1) {
1823 switch ((h = http_next_header(conn, &headerbuf, &p))) {
1828 http_seterr(HTTP_PROTOCOL_ERROR);
1830 case hdr_content_length:
1831 http_parse_length(p, &clength);
1833 case hdr_content_range:
1834 http_parse_range(p, &offset, &length, &size);
1836 case hdr_last_modified:
1837 http_parse_mtime(p, &mtime);
1840 if (!HTTP_REDIRECT(conn->err))
1843 * if the A flag is set, we don't follow
1844 * temporary redirects.
1847 conn->err != HTTP_MOVED_PERM &&
1848 conn->err != HTTP_PERM_REDIRECT &&
1849 conn->err != HTTP_USE_PROXY) {
1856 fetch_info("%d redirect to %s",
1860 new = fetchMakeURL(url->scheme, url->host,
1861 url->port, p, url->user, url->pwd);
1863 new = fetchParseURL(p);
1865 /* XXX should set an error code */
1866 DEBUGF("failed to parse new URL\n");
1870 /* Only copy credentials if the host matches */
1871 if (strcmp(new->host, url->host) == 0 &&
1872 !*new->user && !*new->pwd) {
1873 strcpy(new->user, url->user);
1874 strcpy(new->pwd, url->pwd);
1876 new->offset = url->offset;
1877 new->length = url->length;
1878 new->ims_time = url->ims_time;
1880 case hdr_transfer_encoding:
1882 chunked = (strcasecmp(p, "chunked") == 0);
1884 case hdr_www_authenticate:
1885 if (conn->err != HTTP_NEED_AUTH)
1887 if (http_parse_authenticate(p, &server_challenges) == 0)
1890 case hdr_proxy_authenticate:
1891 if (conn->err != HTTP_NEED_PROXY_AUTH)
1893 if (http_parse_authenticate(p, &proxy_challenges) == 0)
1902 } while (h > hdr_end);
1904 /* we need to provide authentication */
1905 if (conn->err == HTTP_NEED_AUTH ||
1906 conn->err == HTTP_NEED_PROXY_AUTH) {
1908 if ((conn->err == HTTP_NEED_AUTH &&
1909 !server_challenges.valid) ||
1910 (conn->err == HTTP_NEED_PROXY_AUTH &&
1911 !proxy_challenges.valid)) {
1912 /* 401/7 but no www/proxy-authenticate ?? */
1913 DEBUGF("%03d without auth header\n", conn->err);
1921 /* requested range not satisfiable */
1922 if (conn->err == HTTP_BAD_RANGE) {
1923 if (url->offset > 0 && url->length == 0) {
1924 /* asked for 0 bytes; fake it */
1925 offset = url->offset;
1927 conn->err = HTTP_OK;
1930 http_seterr(conn->err);
1935 /* we have a hit or an error */
1936 if (conn->err == HTTP_OK
1937 || conn->err == HTTP_NOT_MODIFIED
1938 || conn->err == HTTP_PARTIAL
1939 || HTTP_ERROR(conn->err))
1942 /* all other cases: we got a redirect */
1944 clean_http_auth_challenges(&server_challenges);
1948 DEBUGF("redirect with no new location\n");
1956 /* we failed, or ran out of retries */
1962 DEBUGF("offset %lld, length %lld, size %lld, clength %lld\n",
1963 (long long)offset, (long long)length,
1964 (long long)size, (long long)clength);
1966 if (conn->err == HTTP_NOT_MODIFIED) {
1967 http_seterr(HTTP_NOT_MODIFIED);
1971 /* check for inconsistencies */
1972 if (clength != -1 && length != -1 && clength != length) {
1973 http_seterr(HTTP_PROTOCOL_ERROR);
1979 length = offset + clength;
1980 if (length != -1 && size != -1 && length != size) {
1981 http_seterr(HTTP_PROTOCOL_ERROR);
1990 us->atime = us->mtime = mtime;
1994 if (URL->offset > 0 && offset > URL->offset) {
1995 http_seterr(HTTP_PROTOCOL_ERROR);
1999 /* report back real offset and size */
2000 URL->offset = offset;
2001 URL->length = clength;
2003 /* wrap it up in a FILE */
2004 if ((f = http_funopen(conn, chunked)) == NULL) {
2014 if (HTTP_ERROR(conn->err)) {
2015 http_print_html(stderr, f);
2019 clean_http_headerbuf(&headerbuf);
2020 clean_http_auth_challenges(&server_challenges);
2021 clean_http_auth_challenges(&proxy_challenges);
2031 clean_http_headerbuf(&headerbuf);
2032 clean_http_auth_challenges(&server_challenges);
2033 clean_http_auth_challenges(&proxy_challenges);
2038 /*****************************************************************************
2043 * Retrieve and stat a file by HTTP
2046 fetchXGetHTTP(struct url *URL, struct url_stat *us, const char *flags)
2048 return (http_request(URL, "GET", us, http_get_proxy(URL, flags), flags));
2052 * Retrieve a file by HTTP
2055 fetchGetHTTP(struct url *URL, const char *flags)
2057 return (fetchXGetHTTP(URL, NULL, flags));
2061 * Store a file by HTTP
2064 fetchPutHTTP(struct url *URL __unused, const char *flags __unused)
2066 warnx("fetchPutHTTP(): not implemented");
2071 * Get an HTTP document's metadata
2074 fetchStatHTTP(struct url *URL, struct url_stat *us, const char *flags)
2078 f = http_request(URL, "HEAD", us, http_get_proxy(URL, flags), flags);
2089 fetchListHTTP(struct url *url __unused, const char *flags __unused)
2091 warnx("fetchListHTTP(): not implemented");
2096 fetchReqHTTP(struct url *URL, const char *method, const char *flags,
2097 const char *content_type, const char *body)
2100 return (http_request_body(URL, method, NULL, http_get_proxy(URL, flags),
2101 flags, content_type, body));