1 /* Licensed to the Apache Software Foundation (ASF) under one or more
2 * contributor license agreements. See the NOTICE file distributed with
3 * this work for additional information regarding copyright ownership.
4 * The ASF licenses this file to You under the Apache License, Version 2.0
5 * (the "License"); you may not use this file except in compliance with
6 * the License. You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
18 * protocol.c --- routines which directly communicate with the client.
20 * Code originally by Rob McCool; much redone by Robert S. Thau
21 * and the Apache Software Foundation.
25 #include "apr_strings.h"
26 #include "apr_buckets.h"
28 #include "apr_signal.h"
29 #include "apr_strmatch.h"
31 #define APR_WANT_STDIO /* for sscanf */
32 #define APR_WANT_STRFUNC
33 #define APR_WANT_MEMFUNC
36 #include "util_filter.h"
37 #include "ap_config.h"
39 #include "http_config.h"
40 #include "http_core.h"
41 #include "http_protocol.h"
42 #include "http_main.h"
43 #include "http_request.h"
44 #include "http_vhost.h"
45 #include "http_log.h" /* For errors detected in basic auth common
48 #include "util_charset.h"
49 #include "util_ebcdic.h"
50 #include "scoreboard.h"
61 APR_HOOK_LINK(post_read_request)
62 APR_HOOK_LINK(log_transaction)
63 APR_HOOK_LINK(http_scheme)
64 APR_HOOK_LINK(default_port)
67 AP_DECLARE_DATA ap_filter_rec_t *ap_old_write_func = NULL;
70 /* Patterns to match in ap_make_content_type() */
71 static const char *needcset[] = {
76 static const apr_strmatch_pattern **needcset_patterns;
77 static const apr_strmatch_pattern *charset_pattern;
79 AP_DECLARE(void) ap_setup_make_content_type(apr_pool_t *pool)
82 for (i = 0; needcset[i]; i++) {
85 needcset_patterns = (const apr_strmatch_pattern **)
86 apr_palloc(pool, (i + 1) * sizeof(apr_strmatch_pattern *));
87 for (i = 0; needcset[i]; i++) {
88 needcset_patterns[i] = apr_strmatch_precompile(pool, needcset[i], 0);
90 needcset_patterns[i] = NULL;
91 charset_pattern = apr_strmatch_precompile(pool, "charset=", 0);
95 * Builds the content-type that should be sent to the client from the
96 * content-type specified. The following rules are followed:
97 * - if type is NULL or "", return NULL (do not set content-type).
98 * - if charset adding is disabled, stop processing and return type.
99 * - then, if there are no parameters on type, add the default charset
102 AP_DECLARE(const char *)ap_make_content_type(request_rec *r, const char *type)
104 const apr_strmatch_pattern **pcset;
105 core_dir_config *conf =
106 (core_dir_config *)ap_get_module_config(r->per_dir_config,
108 core_request_config *request_conf;
111 if (!type || *type == '\0') {
115 if (conf->add_default_charset != ADD_DEFAULT_CHARSET_ON) {
120 ap_get_module_config(r->request_config, &core_module);
121 if (request_conf->suppress_charset) {
125 type_len = strlen(type);
127 if (apr_strmatch(charset_pattern, type, type_len) != NULL) {
128 /* already has parameter, do nothing */
129 /* XXX we don't check the validity */
133 /* see if it makes sense to add the charset. At present,
134 * we only add it if the Content-type is one of needcset[]
136 for (pcset = needcset_patterns; *pcset ; pcset++) {
137 if (apr_strmatch(*pcset, type, type_len) != NULL) {
138 struct iovec concat[3];
139 concat[0].iov_base = (void *)type;
140 concat[0].iov_len = type_len;
141 concat[1].iov_base = (void *)"; charset=";
142 concat[1].iov_len = sizeof("; charset=") - 1;
143 concat[2].iov_base = (void *)(conf->add_default_charset_name);
144 concat[2].iov_len = strlen(conf->add_default_charset_name);
145 type = apr_pstrcatv(r->pool, concat, 3, NULL);
154 AP_DECLARE(void) ap_set_content_length(request_rec *r, apr_off_t clength)
156 r->clength = clength;
157 apr_table_setn(r->headers_out, "Content-Length",
158 apr_off_t_toa(r->pool, clength));
162 * Return the latest rational time from a request/mtime (modification time)
163 * pair. We return the mtime unless it's in the future, in which case we
164 * return the current time. We use the request time as a reference in order
165 * to limit the number of calls to time(). We don't check for futurosity
166 * unless the mtime is at least as new as the reference.
168 AP_DECLARE(apr_time_t) ap_rationalize_mtime(request_rec *r, apr_time_t mtime)
172 /* For all static responses, it's almost certain that the file was
173 * last modified before the beginning of the request. So there's
174 * no reason to call time(NULL) again. But if the response has been
175 * created on demand, then it might be newer than the time the request
176 * started. In this event we really have to call time(NULL) again
177 * so that we can give the clients the most accurate Last-Modified. If we
178 * were given a time in the future, we return the current time - the
179 * Last-Modified can't be in the future.
181 now = (mtime < r->request_time) ? r->request_time : apr_time_now();
182 return (mtime > now) ? now : mtime;
185 /* Min # of bytes to allocate when reading a request line */
186 #define MIN_LINE_ALLOC 80
188 /* Get a line of protocol input, including any continuation lines
189 * caused by MIME folding (or broken clients) if fold != 0, and place it
190 * in the buffer s, of size n bytes, without the ending newline.
192 * If s is NULL, ap_rgetline_core will allocate necessary memory from r->pool.
194 * Returns APR_SUCCESS if there are no problems and sets *read to be
195 * the full length of s.
197 * APR_ENOSPC is returned if there is not enough buffer space.
198 * Other errors may be returned on other errors.
200 * The LF is *not* returned in the buffer. Therefore, a *read of 0
201 * indicates that an empty line was read.
203 * Notes: Because the buffer uses 1 char for NUL, the most we can return is
204 * (n - 1) actual characters.
206 * If no LF is detected on the last line due to a dropped connection
207 * or a full buffer, that's considered an error.
209 AP_DECLARE(apr_status_t) ap_rgetline_core(char **s, apr_size_t n,
210 apr_size_t *read, request_rec *r,
211 int fold, apr_bucket_brigade *bb)
215 apr_size_t bytes_handled = 0, current_alloc = 0;
216 char *pos, *last_char = *s;
217 int do_alloc = (*s == NULL), saw_eos = 0;
220 * Initialize last_char as otherwise a random value will be compared
221 * against APR_ASCII_LF at the end of the loop if bb only contains
222 * zero-length buckets.
228 apr_brigade_cleanup(bb);
229 rv = ap_get_brigade(r->input_filters, bb, AP_MODE_GETLINE,
231 if (rv != APR_SUCCESS) {
235 /* Something horribly wrong happened. Someone didn't block! */
236 if (APR_BRIGADE_EMPTY(bb)) {
240 for (e = APR_BRIGADE_FIRST(bb);
241 e != APR_BRIGADE_SENTINEL(bb);
242 e = APR_BUCKET_NEXT(e))
247 /* If we see an EOS, don't bother doing anything more. */
248 if (APR_BUCKET_IS_EOS(e)) {
253 rv = apr_bucket_read(e, &str, &len, APR_BLOCK_READ);
254 if (rv != APR_SUCCESS) {
259 /* no use attempting a zero-byte alloc (hurts when
260 * using --with-efence --enable-pool-debug) or
261 * doing any of the other logic either
266 /* Would this overrun our buffer? If so, we'll die. */
267 if (n < bytes_handled + len) {
268 *read = bytes_handled;
270 /* ensure this string is NUL terminated */
271 if (bytes_handled > 0) {
272 (*s)[bytes_handled-1] = '\0';
281 /* Do we have to handle the allocation ourselves? */
283 /* We'll assume the common case where one bucket is enough. */
286 if (current_alloc < MIN_LINE_ALLOC) {
287 current_alloc = MIN_LINE_ALLOC;
289 *s = apr_palloc(r->pool, current_alloc);
291 else if (bytes_handled + len > current_alloc) {
292 /* Increase the buffer size */
293 apr_size_t new_size = current_alloc * 2;
296 if (bytes_handled + len > new_size) {
297 new_size = (bytes_handled + len) * 2;
300 new_buffer = apr_palloc(r->pool, new_size);
302 /* Copy what we already had. */
303 memcpy(new_buffer, *s, bytes_handled);
304 current_alloc = new_size;
309 /* Just copy the rest of the data to the end of the old buffer. */
310 pos = *s + bytes_handled;
311 memcpy(pos, str, len);
312 last_char = pos + len - 1;
314 /* We've now processed that new data - update accordingly. */
315 bytes_handled += len;
318 /* If we got a full line of input, stop reading */
319 if (last_char && (*last_char == APR_ASCII_LF)) {
324 /* Now NUL-terminate the string at the end of the line;
325 * if the last-but-one character is a CR, terminate there */
326 if (last_char > *s && last_char[-1] == APR_ASCII_CR) {
330 bytes_handled = last_char - *s;
332 /* If we're folding, we have more work to do.
334 * Note that if an EOS was seen, we know we can't have another line.
336 if (fold && bytes_handled && !saw_eos) {
342 /* Clear the temp brigade for this filter read. */
343 apr_brigade_cleanup(bb);
345 /* We only care about the first byte. */
346 rv = ap_get_brigade(r->input_filters, bb, AP_MODE_SPECULATIVE,
348 if (rv != APR_SUCCESS) {
352 if (APR_BRIGADE_EMPTY(bb)) {
356 e = APR_BRIGADE_FIRST(bb);
358 /* If we see an EOS, don't bother doing anything more. */
359 if (APR_BUCKET_IS_EOS(e)) {
363 rv = apr_bucket_read(e, &str, &len, APR_BLOCK_READ);
364 if (rv != APR_SUCCESS) {
365 apr_brigade_cleanup(bb);
369 /* Found one, so call ourselves again to get the next line.
371 * FIXME: If the folding line is completely blank, should we
372 * stop folding? Does that require also looking at the next
375 /* When we call destroy, the buckets are deleted, so save that
376 * one character we need. This simplifies our execution paths
377 * at the cost of one character read.
380 if (c == APR_ASCII_BLANK || c == APR_ASCII_TAB) {
381 /* Do we have enough space? We may be full now. */
382 if (bytes_handled >= n) {
384 /* ensure this string is terminated */
389 apr_size_t next_size, next_len;
392 /* If we're doing the allocations for them, we have to
393 * give ourselves a NULL and copy it on return.
398 /* We're null terminated. */
402 next_size = n - bytes_handled;
404 rv = ap_rgetline_core(&tmp, next_size,
405 &next_len, r, 0, bb);
406 if (rv != APR_SUCCESS) {
410 if (do_alloc && next_len > 0) {
412 apr_size_t new_size = bytes_handled + next_len + 1;
414 /* we need to alloc an extra byte for a null */
415 new_buffer = apr_palloc(r->pool, new_size);
417 /* Copy what we already had. */
418 memcpy(new_buffer, *s, bytes_handled);
420 /* copy the new line, including the trailing null */
421 memcpy(new_buffer + bytes_handled, tmp, next_len + 1);
425 last_char += next_len;
426 bytes_handled += next_len;
429 else { /* next character is not tab or space */
434 *read = bytes_handled;
436 /* PR#43039: We shouldn't accept NULL bytes within the line */
437 if (strlen(*s) < bytes_handled) {
444 #if APR_CHARSET_EBCDIC
445 AP_DECLARE(apr_status_t) ap_rgetline(char **s, apr_size_t n,
446 apr_size_t *read, request_rec *r,
447 int fold, apr_bucket_brigade *bb)
449 /* on ASCII boxes, ap_rgetline is a macro which simply invokes
450 * ap_rgetline_core with the same parms
452 * on EBCDIC boxes, each complete http protocol input line needs to be
453 * translated into the code page used by the compiler. Since
454 * ap_rgetline_core uses recursion, we do the translation in a wrapper
455 * function to insure that each input character gets translated only once.
459 rv = ap_rgetline_core(s, n, read, r, fold, bb);
460 if (rv == APR_SUCCESS) {
461 ap_xlate_proto_from_ascii(*s, *read);
467 AP_DECLARE(int) ap_getline(char *s, int n, request_rec *r, int fold)
472 apr_bucket_brigade *tmp_bb;
474 tmp_bb = apr_brigade_create(r->pool, r->connection->bucket_alloc);
475 rv = ap_rgetline(&tmp_s, n, &len, r, fold, tmp_bb);
476 apr_brigade_destroy(tmp_bb);
478 /* Map the out-of-space condition to the old API. */
479 if (rv == APR_ENOSPC) {
483 /* Anything else is just bad. */
484 if (rv != APR_SUCCESS) {
491 /* parse_uri: break apart the uri
493 * - sets r->args to rest after '?' (or NULL if no '?')
494 * - sets r->uri to request uri (without r->args part)
495 * - sets r->hostname (if not set already) from request (scheme://host:port)
497 AP_CORE_DECLARE(void) ap_parse_uri(request_rec *r, const char *uri)
499 int status = HTTP_OK;
501 r->unparsed_uri = apr_pstrdup(r->pool, uri);
503 /* http://issues.apache.org/bugzilla/show_bug.cgi?id=31875
504 * http://issues.apache.org/bugzilla/show_bug.cgi?id=28450
506 * This is not in fact a URI, it's a path. That matters in the
507 * case of a leading double-slash. We need to resolve the issue
508 * by normalising that out before treating it as a URI.
510 while ((uri[0] == '/') && (uri[1] == '/')) {
513 if (r->method_number == M_CONNECT) {
514 status = apr_uri_parse_hostinfo(r->pool, uri, &r->parsed_uri);
517 /* Simple syntax Errors in URLs are trapped by
518 * parse_uri_components().
520 status = apr_uri_parse(r->pool, uri, &r->parsed_uri);
523 if (status == APR_SUCCESS) {
524 /* if it has a scheme we may need to do absoluteURI vhost stuff */
525 if (r->parsed_uri.scheme
526 && !strcasecmp(r->parsed_uri.scheme, ap_http_scheme(r))) {
527 r->hostname = r->parsed_uri.hostname;
529 else if (r->method_number == M_CONNECT) {
530 r->hostname = r->parsed_uri.hostname;
533 r->args = r->parsed_uri.query;
534 r->uri = r->parsed_uri.path ? r->parsed_uri.path
535 : apr_pstrdup(r->pool, "/");
537 #if defined(OS2) || defined(WIN32)
538 /* Handle path translations for OS/2 and plug security hole.
539 * This will prevent "http://www.wherever.com/..\..\/" from
540 * returning a directory for the root drive.
545 for (x = r->uri; (x = strchr(x, '\\')) != NULL; )
548 #endif /* OS2 || WIN32 */
553 r->status = HTTP_BAD_REQUEST; /* set error status */
554 r->uri = apr_pstrdup(r->pool, uri);
558 static int read_request_line(request_rec *r, apr_bucket_brigade *bb)
565 conn_rec *conn = r->connection;
567 int major = 1, minor = 0; /* Assume HTTP/1.0 if non-"HTTP" protocol */
570 int num_blank_lines = 0;
571 int max_blank_lines = r->server->limit_req_fields;
573 if (max_blank_lines <= 0) {
574 max_blank_lines = DEFAULT_LIMIT_REQUEST_FIELDS;
577 /* Read past empty lines until we get a real request line,
578 * a read error, the connection closes (EOF), or we timeout.
580 * We skip empty lines because browsers have to tack a CRLF on to the end
581 * of POSTs to support old CERN webservers. But note that we may not
582 * have flushed any previous response completely to the client yet.
583 * We delay the flush as long as possible so that we can improve
584 * performance for clients that are pipelining requests. If a request
585 * is pipelined then we won't block during the (implicit) read() below.
586 * If the requests aren't pipelined, then the client is still waiting
587 * for the final buffer flush from us, and we will block in the implicit
588 * read(). B_SAFEREAD ensures that the BUFF layer flushes if it will
589 * have to block during a read.
595 /* insure ap_rgetline allocates memory each time thru the loop
596 * if there are empty lines
598 r->the_request = NULL;
599 rv = ap_rgetline(&(r->the_request), (apr_size_t)(r->server->limit_req_line + 2),
602 if (rv != APR_SUCCESS) {
603 r->request_time = apr_time_now();
605 /* ap_rgetline returns APR_ENOSPC if it fills up the
606 * buffer before finding the end-of-line. This is only going to
607 * happen if it exceeds the configured limit for a request-line.
609 if (rv == APR_ENOSPC) {
610 r->status = HTTP_REQUEST_URI_TOO_LARGE;
611 r->proto_num = HTTP_VERSION(1,0);
612 r->protocol = apr_pstrdup(r->pool, "HTTP/1.0");
614 else if (rv == APR_TIMEUP) {
615 r->status = HTTP_REQUEST_TIME_OUT;
617 else if (rv == APR_EINVAL) {
618 r->status = HTTP_BAD_REQUEST;
622 } while ((len <= 0) && (++num_blank_lines < max_blank_lines));
624 /* we've probably got something to do, ignore graceful restart requests */
626 r->request_time = apr_time_now();
628 r->method = ap_getword_white(r->pool, &ll);
631 /* XXX If we want to keep track of the Method, the protocol module should do
632 * it. That support isn't in the scoreboard yet. Hopefully next week
634 ap_update_connection_status(AP_CHILD_THREAD_FROM_ID(conn->id), "Method",
638 uri = ap_getword_white(r->pool, &ll);
640 /* Provide quick information about the request method as soon as known */
642 r->method_number = ap_method_number_of(r->method);
643 if (r->method_number == M_GET && r->method[0] == 'H') {
647 ap_parse_uri(r, uri);
658 r->protocol = apr_pstrmemdup(r->pool, pro, len);
660 /* XXX ap_update_connection_status(conn->id, "Protocol", r->protocol); */
662 /* Avoid sscanf in the common case */
664 && pro[0] == 'H' && pro[1] == 'T' && pro[2] == 'T' && pro[3] == 'P'
665 && pro[4] == '/' && apr_isdigit(pro[5]) && pro[6] == '.'
666 && apr_isdigit(pro[7])) {
667 r->proto_num = HTTP_VERSION(pro[5] - '0', pro[7] - '0');
669 else if (3 == sscanf(r->protocol, "%4s/%u.%u", http, &major, &minor)
670 && (strcasecmp("http", http) == 0)
671 && (minor < HTTP_VERSION(1, 0)) ) /* don't allow HTTP/0.1000 */
672 r->proto_num = HTTP_VERSION(major, minor);
674 r->proto_num = HTTP_VERSION(1, 0);
679 AP_DECLARE(void) ap_get_mime_headers_core(request_rec *r, apr_bucket_brigade *bb)
681 char *last_field = NULL;
682 apr_size_t last_len = 0;
683 apr_size_t alloc_len = 0;
691 * Read header lines until we get the empty separator line, a read error,
692 * the connection closes (EOF), reach the server limit, or we timeout.
699 rv = ap_rgetline(&field, r->server->limit_req_fieldsize + 2,
702 if (rv != APR_SUCCESS) {
703 if (rv == APR_TIMEUP) {
704 r->status = HTTP_REQUEST_TIME_OUT;
707 r->status = HTTP_BAD_REQUEST;
710 /* ap_rgetline returns APR_ENOSPC if it fills up the buffer before
711 * finding the end-of-line. This is only going to happen if it
712 * exceeds the configured limit for a field size.
714 if (rv == APR_ENOSPC && field) {
715 /* insure ap_escape_html will terminate correctly */
716 field[len - 1] = '\0';
717 apr_table_setn(r->notes, "error-notes",
719 "Size of a request header field "
720 "exceeds server limit.<br />\n"
722 ap_escape_html(r->pool, field),
728 if (last_field != NULL) {
729 if ((len > 0) && ((*field == '\t') || *field == ' ')) {
730 /* This line is a continuation of the preceding line(s),
731 * so append it to the line that we've set aside.
732 * Note: this uses a power-of-two allocator to avoid
733 * doing O(n) allocs and using O(n^2) space for
734 * continuations that span many many lines.
736 apr_size_t fold_len = last_len + len + 1; /* trailing null */
738 if (fold_len >= (apr_size_t)(r->server->limit_req_fieldsize)) {
739 r->status = HTTP_BAD_REQUEST;
740 /* report what we have accumulated so far before the
741 * overflow (last_field) as the field with the problem
743 apr_table_setn(r->notes, "error-notes",
745 "Size of a request header field "
747 "exceeds server limit.<br />\n"
749 ap_escape_html(r->pool, last_field),
754 if (fold_len > alloc_len) {
756 alloc_len += alloc_len;
757 if (fold_len > alloc_len) {
758 alloc_len = fold_len;
760 fold_buf = (char *)apr_palloc(r->pool, alloc_len);
761 memcpy(fold_buf, last_field, last_len);
762 last_field = fold_buf;
764 memcpy(last_field + last_len, field, len +1); /* +1 for nul */
768 else /* not a continuation line */ {
770 if (r->server->limit_req_fields
771 && (++fields_read > r->server->limit_req_fields)) {
772 r->status = HTTP_BAD_REQUEST;
773 apr_table_setn(r->notes, "error-notes",
774 "The number of request header fields "
775 "exceeds this server's limit.");
779 if (!(value = strchr(last_field, ':'))) { /* Find ':' or */
780 r->status = HTTP_BAD_REQUEST; /* abort bad request */
781 apr_table_setn(r->notes, "error-notes",
783 "Request header field is "
784 "missing ':' separator.<br />\n"
786 ap_escape_html(r->pool,
792 tmp_field = value - 1; /* last character of field-name */
794 *value++ = '\0'; /* NUL-terminate at colon */
796 while (*value == ' ' || *value == '\t') {
797 ++value; /* Skip to start of value */
800 /* Strip LWS after field-name: */
801 while (tmp_field > last_field
802 && (*tmp_field == ' ' || *tmp_field == '\t')) {
806 /* Strip LWS after field-value: */
807 tmp_field = last_field + last_len - 1;
808 while (tmp_field > value
809 && (*tmp_field == ' ' || *tmp_field == '\t')) {
813 apr_table_addn(r->headers_in, last_field, value);
815 /* reset the alloc_len so that we'll allocate a new
816 * buffer if we have to do any more folding: we can't
817 * use the previous buffer because its contents are
818 * now part of r->headers_in
822 } /* end if current line is not a continuation starting with tab */
825 /* Found a blank line, stop. */
830 /* Keep track of this line so that we can parse it on
831 * the next loop iteration. (In the folded case, last_field
832 * has been updated already.)
840 apr_table_compress(r->headers_in, APR_OVERLAP_TABLES_MERGE);
843 AP_DECLARE(void) ap_get_mime_headers(request_rec *r)
845 apr_bucket_brigade *tmp_bb;
846 tmp_bb = apr_brigade_create(r->pool, r->connection->bucket_alloc);
847 ap_get_mime_headers_core(r, tmp_bb);
848 apr_brigade_destroy(tmp_bb);
851 request_rec *ap_read_request(conn_rec *conn)
857 apr_bucket_brigade *tmp_bb;
859 apr_interval_time_t cur_timeout;
862 apr_pool_create(&p, conn->pool);
863 apr_pool_tag(p, "request");
864 r = apr_pcalloc(p, sizeof(request_rec));
865 AP_READ_REQUEST_ENTRY((intptr_t)r, (uintptr_t)conn);
867 r->connection = conn;
868 r->server = conn->base_server;
871 r->ap_auth_type = NULL;
873 r->allowed_methods = ap_make_method_list(p, 2);
875 r->headers_in = apr_table_make(r->pool, 25);
876 r->subprocess_env = apr_table_make(r->pool, 25);
877 r->headers_out = apr_table_make(r->pool, 12);
878 r->err_headers_out = apr_table_make(r->pool, 5);
879 r->notes = apr_table_make(r->pool, 5);
881 r->request_config = ap_create_request_config(r->pool);
882 /* Must be set before we run create request hook */
884 r->proto_output_filters = conn->output_filters;
885 r->output_filters = r->proto_output_filters;
886 r->proto_input_filters = conn->input_filters;
887 r->input_filters = r->proto_input_filters;
888 ap_run_create_request(r);
889 r->per_dir_config = r->server->lookup_defaults;
891 r->sent_bodyct = 0; /* bytect isn't for body */
894 r->read_body = REQUEST_NO_BODY;
896 r->status = HTTP_OK; /* Until further notice */
897 r->the_request = NULL;
899 /* Begin by presuming any module can make its own path_info assumptions,
900 * until some module interjects and changes the value.
902 r->used_path_info = AP_REQ_DEFAULT_PATH_INFO;
904 tmp_bb = apr_brigade_create(r->pool, r->connection->bucket_alloc);
906 /* Get the request... */
907 if (!read_request_line(r, tmp_bb)) {
908 if (r->status == HTTP_REQUEST_URI_TOO_LARGE
909 || r->status == HTTP_BAD_REQUEST) {
910 if (r->status == HTTP_BAD_REQUEST) {
911 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
912 "request failed: invalid characters in URI");
915 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
916 "request failed: URI too long (longer than %d)", r->server->limit_req_line);
918 ap_send_error_response(r, 0);
919 ap_update_child_status(conn->sbh, SERVER_BUSY_LOG, r);
920 ap_run_log_transaction(r);
921 apr_brigade_destroy(tmp_bb);
924 else if (r->status == HTTP_REQUEST_TIME_OUT) {
925 ap_update_child_status(conn->sbh, SERVER_BUSY_LOG, r);
926 if (!r->connection->keepalives) {
927 ap_run_log_transaction(r);
929 apr_brigade_destroy(tmp_bb);
933 apr_brigade_destroy(tmp_bb);
938 /* We may have been in keep_alive_timeout mode, so toggle back
939 * to the normal timeout mode as we fetch the header lines,
942 csd = ap_get_module_config(conn->conn_config, &core_module);
943 apr_socket_timeout_get(csd, &cur_timeout);
944 if (cur_timeout != conn->base_server->timeout) {
945 apr_socket_timeout_set(csd, conn->base_server->timeout);
946 cur_timeout = conn->base_server->timeout;
949 if (!r->assbackwards) {
950 ap_get_mime_headers_core(r, tmp_bb);
951 if (r->status != HTTP_OK) {
952 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
953 "request failed: error reading the headers");
954 ap_send_error_response(r, 0);
955 ap_update_child_status(conn->sbh, SERVER_BUSY_LOG, r);
956 ap_run_log_transaction(r);
957 apr_brigade_destroy(tmp_bb);
961 if (apr_table_get(r->headers_in, "Transfer-Encoding")
962 && apr_table_get(r->headers_in, "Content-Length")) {
963 /* 2616 section 4.4, point 3: "if both Transfer-Encoding
964 * and Content-Length are received, the latter MUST be
965 * ignored"; so unset it here to prevent any confusion
967 apr_table_unset(r->headers_in, "Content-Length");
971 if (r->header_only) {
973 * Client asked for headers only with HTTP/0.9, which doesn't send
974 * headers! Have to dink things just to make sure the error message
977 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
978 "client sent invalid HTTP/0.9 request: HEAD %s",
981 r->status = HTTP_BAD_REQUEST;
982 ap_send_error_response(r, 0);
983 ap_update_child_status(conn->sbh, SERVER_BUSY_LOG, r);
984 ap_run_log_transaction(r);
985 apr_brigade_destroy(tmp_bb);
990 apr_brigade_destroy(tmp_bb);
992 /* update what we think the virtual host is based on the headers we've
993 * now read. may update status.
995 ap_update_vhost_from_headers(r);
997 /* Toggle to the Host:-based vhost's timeout mode to fetch the
998 * request body and send the response body, if needed.
1000 if (cur_timeout != r->server->timeout) {
1001 apr_socket_timeout_set(csd, r->server->timeout);
1002 cur_timeout = r->server->timeout;
1005 /* we may have switched to another server */
1006 r->per_dir_config = r->server->lookup_defaults;
1008 if ((!r->hostname && (r->proto_num >= HTTP_VERSION(1, 1)))
1009 || ((r->proto_num == HTTP_VERSION(1, 1))
1010 && !apr_table_get(r->headers_in, "Host"))) {
1012 * Client sent us an HTTP/1.1 or later request without telling us the
1013 * hostname, either with a full URL or a Host: header. We therefore
1014 * need to (as per the 1.1 spec) send an error. As a special case,
1015 * HTTP/1.1 mentions twice (S9, S14.23) that a request MUST contain
1016 * a Host: header, and the server MUST respond with 400 if it doesn't.
1018 r->status = HTTP_BAD_REQUEST;
1019 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
1020 "client sent HTTP/1.1 request without hostname "
1021 "(see RFC2616 section 14.23): %s", r->uri);
1025 * Add the HTTP_IN filter here to ensure that ap_discard_request_body
1026 * called by ap_die and by ap_send_error_response works correctly on
1027 * status codes that do not cause the connection to be dropped and
1028 * in situations where the connection should be kept alive.
1031 ap_add_input_filter_handle(ap_http_input_filter_handle,
1032 NULL, r, r->connection);
1034 if (r->status != HTTP_OK) {
1035 ap_send_error_response(r, 0);
1036 ap_update_child_status(conn->sbh, SERVER_BUSY_LOG, r);
1037 ap_run_log_transaction(r);
1041 if ((access_status = ap_run_post_read_request(r))) {
1042 ap_die(access_status, r);
1043 ap_update_child_status(conn->sbh, SERVER_BUSY_LOG, r);
1044 ap_run_log_transaction(r);
1049 if (((expect = apr_table_get(r->headers_in, "Expect")) != NULL)
1050 && (expect[0] != '\0')) {
1052 * The Expect header field was added to HTTP/1.1 after RFC 2068
1053 * as a means to signal when a 100 response is desired and,
1054 * unfortunately, to signal a poor man's mandatory extension that
1055 * the server must understand or return 417 Expectation Failed.
1057 if (strcasecmp(expect, "100-continue") == 0) {
1058 r->expecting_100 = 1;
1061 r->status = HTTP_EXPECTATION_FAILED;
1062 ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r,
1063 "client sent an unrecognized expectation value of "
1064 "Expect: %s", expect);
1065 ap_send_error_response(r, 0);
1066 ap_update_child_status(conn->sbh, SERVER_BUSY_LOG, r);
1067 ap_run_log_transaction(r);
1072 AP_READ_REQUEST_SUCCESS((uintptr_t)r, (char *)r->method, (char *)r->uri, (char *)r->server->defn_name, r->status);
1075 AP_READ_REQUEST_FAILURE((uintptr_t)r);
1079 /* if a request with a body creates a subrequest, remove original request's
1080 * input headers which pertain to the body which has already been read.
1081 * out-of-line helper function for ap_set_sub_req_protocol.
1084 static void strip_headers_request_body(request_rec *rnew)
1086 apr_table_unset(rnew->headers_in, "Content-Encoding");
1087 apr_table_unset(rnew->headers_in, "Content-Language");
1088 apr_table_unset(rnew->headers_in, "Content-Length");
1089 apr_table_unset(rnew->headers_in, "Content-Location");
1090 apr_table_unset(rnew->headers_in, "Content-MD5");
1091 apr_table_unset(rnew->headers_in, "Content-Range");
1092 apr_table_unset(rnew->headers_in, "Content-Type");
1093 apr_table_unset(rnew->headers_in, "Expires");
1094 apr_table_unset(rnew->headers_in, "Last-Modified");
1095 apr_table_unset(rnew->headers_in, "Transfer-Encoding");
1099 * A couple of other functions which initialize some of the fields of
1100 * a request structure, as appropriate for adjuncts of one kind or another
1101 * to a request in progress. Best here, rather than elsewhere, since
1102 * *someone* has to set the protocol-specific fields...
1105 AP_DECLARE(void) ap_set_sub_req_protocol(request_rec *rnew,
1106 const request_rec *r)
1108 rnew->the_request = r->the_request; /* Keep original request-line */
1110 rnew->assbackwards = 1; /* Don't send headers from this. */
1111 rnew->no_local_copy = 1; /* Don't try to send HTTP_NOT_MODIFIED for a
1113 rnew->method = "GET";
1114 rnew->method_number = M_GET;
1115 rnew->protocol = "INCLUDED";
1117 rnew->status = HTTP_OK;
1119 rnew->headers_in = apr_table_copy(rnew->pool, r->headers_in);
1121 /* did the original request have a body? (e.g. POST w/SSI tags)
1122 * if so, make sure the subrequest doesn't inherit body headers
1124 if (!r->kept_body && (apr_table_get(r->headers_in, "Content-Length")
1125 || apr_table_get(r->headers_in, "Transfer-Encoding"))) {
1126 strip_headers_request_body(rnew);
1128 rnew->subprocess_env = apr_table_copy(rnew->pool, r->subprocess_env);
1129 rnew->headers_out = apr_table_make(rnew->pool, 5);
1130 rnew->err_headers_out = apr_table_make(rnew->pool, 5);
1131 rnew->notes = apr_table_make(rnew->pool, 5);
1133 rnew->expecting_100 = r->expecting_100;
1134 rnew->read_length = r->read_length;
1135 rnew->read_body = REQUEST_NO_BODY;
1137 rnew->main = (request_rec *) r;
1140 static void end_output_stream(request_rec *r)
1142 conn_rec *c = r->connection;
1143 apr_bucket_brigade *bb;
1146 bb = apr_brigade_create(r->pool, c->bucket_alloc);
1147 b = apr_bucket_eos_create(c->bucket_alloc);
1148 APR_BRIGADE_INSERT_TAIL(bb, b);
1149 ap_pass_brigade(r->output_filters, bb);
1152 AP_DECLARE(void) ap_finalize_sub_req_protocol(request_rec *sub)
1154 /* tell the filter chain there is no more content coming */
1155 if (!sub->eos_sent) {
1156 end_output_stream(sub);
1160 /* finalize_request_protocol is called at completion of sending the
1161 * response. Its sole purpose is to send the terminating protocol
1162 * information for any wrappers around the response message body
1163 * (i.e., transfer encodings). It should have been named finalize_response.
1165 AP_DECLARE(void) ap_finalize_request_protocol(request_rec *r)
1167 (void) ap_discard_request_body(r);
1169 /* tell the filter chain there is no more content coming */
1171 end_output_stream(r);
1176 * Support for the Basic authentication protocol, and a bit for Digest.
1178 AP_DECLARE(void) ap_note_auth_failure(request_rec *r)
1180 const char *type = ap_auth_type(r);
1182 if (!strcasecmp(type, "Basic"))
1183 ap_note_basic_auth_failure(r);
1184 else if (!strcasecmp(type, "Digest"))
1185 ap_note_digest_auth_failure(r);
1188 ap_log_rerror(APLOG_MARK, APLOG_ERR,
1189 0, r, "need AuthType to note auth failure: %s", r->uri);
1193 AP_DECLARE(void) ap_note_basic_auth_failure(request_rec *r)
1195 const char *type = ap_auth_type(r);
1197 /* if there is no AuthType configure or it is something other than
1198 * Basic, let ap_note_auth_failure() deal with it
1200 if (!type || strcasecmp(type, "Basic"))
1201 ap_note_auth_failure(r);
1203 apr_table_setn(r->err_headers_out,
1204 (PROXYREQ_PROXY == r->proxyreq) ? "Proxy-Authenticate"
1205 : "WWW-Authenticate",
1206 apr_pstrcat(r->pool, "Basic realm=\"", ap_auth_name(r),
1210 AP_DECLARE(void) ap_note_digest_auth_failure(request_rec *r)
1212 apr_table_setn(r->err_headers_out,
1213 (PROXYREQ_PROXY == r->proxyreq) ? "Proxy-Authenticate"
1214 : "WWW-Authenticate",
1215 apr_psprintf(r->pool, "Digest realm=\"%s\", nonce=\""
1216 "%" APR_UINT64_T_HEX_FMT "\"",
1217 ap_auth_name(r), (apr_uint64_t)r->request_time));
1220 AP_DECLARE(int) ap_get_basic_auth_pw(request_rec *r, const char **pw)
1222 const char *auth_line = apr_table_get(r->headers_in,
1223 (PROXYREQ_PROXY == r->proxyreq)
1224 ? "Proxy-Authorization"
1228 if (!(t = ap_auth_type(r)) || strcasecmp(t, "Basic"))
1231 if (!ap_auth_name(r)) {
1232 ap_log_rerror(APLOG_MARK, APLOG_ERR,
1233 0, r, "need AuthName: %s", r->uri);
1234 return HTTP_INTERNAL_SERVER_ERROR;
1238 ap_note_basic_auth_failure(r);
1239 return HTTP_UNAUTHORIZED;
1242 if (strcasecmp(ap_getword(r->pool, &auth_line, ' '), "Basic")) {
1243 /* Client tried to authenticate using wrong auth scheme */
1244 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
1245 "client used wrong authentication scheme: %s", r->uri);
1246 ap_note_basic_auth_failure(r);
1247 return HTTP_UNAUTHORIZED;
1250 while (*auth_line == ' ' || *auth_line == '\t') {
1254 t = ap_pbase64decode(r->pool, auth_line);
1255 r->user = ap_getword_nulls (r->pool, &t, ':');
1256 r->ap_auth_type = "Basic";
1263 struct content_length_ctx {
1264 int data_sent; /* true if the C-L filter has already sent at
1265 * least one bucket on to the next output filter
1268 apr_bucket_brigade *tmpbb;
1271 /* This filter computes the content length, but it also computes the number
1272 * of bytes sent to the client. This means that this filter will always run
1273 * through all of the buckets in all brigades
1275 AP_CORE_DECLARE_NONSTD(apr_status_t) ap_content_length_filter(
1277 apr_bucket_brigade *b)
1279 request_rec *r = f->r;
1280 struct content_length_ctx *ctx;
1283 apr_read_type_e eblock = APR_NONBLOCK_READ;
1287 f->ctx = ctx = apr_palloc(r->pool, sizeof(*ctx));
1289 ctx->tmpbb = apr_brigade_create(r->pool, r->connection->bucket_alloc);
1292 /* Loop through this set of buckets to compute their length
1294 e = APR_BRIGADE_FIRST(b);
1295 while (e != APR_BRIGADE_SENTINEL(b)) {
1296 if (APR_BUCKET_IS_EOS(e)) {
1300 if (e->length == (apr_size_t)-1) {
1302 const char *ignored;
1305 /* This is probably a pipe bucket. Send everything
1306 * prior to this, and then read the data for this bucket.
1308 rv = apr_bucket_read(e, &ignored, &len, eblock);
1309 if (rv == APR_SUCCESS) {
1310 /* Attempt a nonblocking read next time through */
1311 eblock = APR_NONBLOCK_READ;
1312 r->bytes_sent += len;
1314 else if (APR_STATUS_IS_EAGAIN(rv)) {
1315 /* Output everything prior to this bucket, and then
1316 * do a blocking read on the next batch.
1318 if (e != APR_BRIGADE_FIRST(b)) {
1320 apr_brigade_split_ex(b, e, ctx->tmpbb);
1321 flush = apr_bucket_flush_create(r->connection->bucket_alloc);
1323 APR_BRIGADE_INSERT_TAIL(b, flush);
1324 rv = ap_pass_brigade(f->next, b);
1325 if (rv != APR_SUCCESS || f->c->aborted) {
1328 apr_brigade_cleanup(b);
1329 APR_BRIGADE_CONCAT(b, ctx->tmpbb);
1330 e = APR_BRIGADE_FIRST(b);
1334 eblock = APR_BLOCK_READ;
1338 ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
1339 "ap_content_length_filter: "
1340 "apr_bucket_read() failed");
1345 r->bytes_sent += e->length;
1347 e = APR_BUCKET_NEXT(e);
1350 /* If we've now seen the entire response and it's otherwise
1351 * okay to set the C-L in the response header, then do so now.
1353 * We can only set a C-L in the response header if we haven't already
1354 * sent any buckets on to the next output filter for this request.
1356 if (ctx->data_sent == 0 && eos &&
1357 /* don't whack the C-L if it has already been set for a HEAD
1358 * by something like proxy. the brigade only has an EOS bucket
1359 * in this case, making r->bytes_sent zero.
1361 * if r->bytes_sent > 0 we have a (temporary) body whose length may
1362 * have been changed by a filter. the C-L header might not have been
1363 * updated so we do it here. long term it would be cleaner to have
1364 * such filters update or remove the C-L header, and just use it
1367 !(r->header_only && r->bytes_sent == 0 &&
1368 apr_table_get(r->headers_out, "Content-Length"))) {
1369 ap_set_content_length(r, r->bytes_sent);
1373 return ap_pass_brigade(f->next, b);
1377 * Send the body of a response to the client.
1379 AP_DECLARE(apr_status_t) ap_send_fd(apr_file_t *fd, request_rec *r,
1380 apr_off_t offset, apr_size_t len,
1383 conn_rec *c = r->connection;
1384 apr_bucket_brigade *bb = NULL;
1387 bb = apr_brigade_create(r->pool, c->bucket_alloc);
1389 apr_brigade_insert_file(bb, fd, 0, len, r->pool);
1391 rv = ap_pass_brigade(r->output_filters, bb);
1392 if (rv != APR_SUCCESS) {
1393 *nbytes = 0; /* no way to tell how many were actually sent */
1403 /* send data from an in-memory buffer */
1404 AP_DECLARE(size_t) ap_send_mmap(apr_mmap_t *mm, request_rec *r, size_t offset,
1407 conn_rec *c = r->connection;
1408 apr_bucket_brigade *bb = NULL;
1411 bb = apr_brigade_create(r->pool, c->bucket_alloc);
1412 b = apr_bucket_mmap_create(mm, offset, length, c->bucket_alloc);
1413 APR_BRIGADE_INSERT_TAIL(bb, b);
1414 ap_pass_brigade(r->output_filters, bb);
1416 return mm->size; /* XXX - change API to report apr_status_t? */
1418 #endif /* APR_HAS_MMAP */
1421 apr_bucket_brigade *bb;
1422 apr_bucket_brigade *tmpbb;
1423 } old_write_filter_ctx;
1425 AP_CORE_DECLARE_NONSTD(apr_status_t) ap_old_write_filter(
1426 ap_filter_t *f, apr_bucket_brigade *bb)
1428 old_write_filter_ctx *ctx = f->ctx;
1430 AP_DEBUG_ASSERT(ctx);
1432 if (ctx->bb != NULL) {
1433 /* whatever is coming down the pipe (we don't care), we
1434 * can simply insert our buffered data at the front and
1435 * pass the whole bundle down the chain.
1437 APR_BRIGADE_PREPEND(bb, ctx->bb);
1440 return ap_pass_brigade(f->next, bb);
1443 static ap_filter_t *insert_old_write_filter(request_rec *r)
1446 old_write_filter_ctx *ctx;
1448 /* future optimization: record some flags in the request_rec to
1449 * say whether we've added our filter, and whether it is first.
1452 /* this will typically exit on the first test */
1453 for (f = r->output_filters; f != NULL; f = f->next) {
1454 if (ap_old_write_func == f->frec)
1459 /* our filter hasn't been added yet */
1460 ctx = apr_pcalloc(r->pool, sizeof(*ctx));
1461 ctx->tmpbb = apr_brigade_create(r->pool, r->connection->bucket_alloc);
1463 ap_add_output_filter("OLD_WRITE", ctx, r, r->connection);
1464 f = r->output_filters;
1470 static apr_status_t buffer_output(request_rec *r,
1471 const char *str, apr_size_t len)
1473 conn_rec *c = r->connection;
1475 old_write_filter_ctx *ctx;
1480 f = insert_old_write_filter(r);
1483 /* if the first filter is not our buffering filter, then we have to
1484 * deliver the content through the normal filter chain
1486 if (f != r->output_filters) {
1488 apr_bucket *b = apr_bucket_transient_create(str, len, c->bucket_alloc);
1489 APR_BRIGADE_INSERT_TAIL(ctx->tmpbb, b);
1491 rv = ap_pass_brigade(r->output_filters, ctx->tmpbb);
1492 apr_brigade_cleanup(ctx->tmpbb);
1496 if (ctx->bb == NULL) {
1497 ctx->bb = apr_brigade_create(r->pool, c->bucket_alloc);
1500 return ap_fwrite(f->next, ctx->bb, str, len);
1503 AP_DECLARE(int) ap_rputc(int c, request_rec *r)
1507 if (r->connection->aborted) {
1511 if (buffer_output(r, &c2, 1) != APR_SUCCESS)
1517 AP_DECLARE(int) ap_rputs(const char *str, request_rec *r)
1521 if (r->connection->aborted)
1524 if (buffer_output(r, str, len = strlen(str)) != APR_SUCCESS)
1530 AP_DECLARE(int) ap_rwrite(const void *buf, int nbyte, request_rec *r)
1532 if (r->connection->aborted)
1535 if (buffer_output(r, buf, nbyte) != APR_SUCCESS)
1541 struct ap_vrprintf_data {
1542 apr_vformatter_buff_t vbuff;
1547 static apr_status_t r_flush(apr_vformatter_buff_t *buff)
1549 /* callback function passed to ap_vformatter to be called when
1550 * vformatter needs to write into buff and buff.curpos > buff.endpos */
1552 /* ap_vrprintf_data passed as a apr_vformatter_buff_t, which is then
1553 * "downcast" to an ap_vrprintf_data */
1554 struct ap_vrprintf_data *vd = (struct ap_vrprintf_data*)buff;
1556 if (vd->r->connection->aborted)
1559 /* r_flush is called when vbuff is completely full */
1560 if (buffer_output(vd->r, vd->buff, AP_IOBUFSIZE)) {
1564 /* reset the buffer position */
1565 vd->vbuff.curpos = vd->buff;
1566 vd->vbuff.endpos = vd->buff + AP_IOBUFSIZE;
1571 AP_DECLARE(int) ap_vrprintf(request_rec *r, const char *fmt, va_list va)
1574 struct ap_vrprintf_data vd;
1575 char vrprintf_buf[AP_IOBUFSIZE];
1577 vd.vbuff.curpos = vrprintf_buf;
1578 vd.vbuff.endpos = vrprintf_buf + AP_IOBUFSIZE;
1580 vd.buff = vrprintf_buf;
1582 if (r->connection->aborted)
1585 written = apr_vformatter(r_flush, &vd.vbuff, fmt, va);
1587 if (written != -1) {
1588 int n = vd.vbuff.curpos - vrprintf_buf;
1590 /* last call to buffer_output, to finish clearing the buffer */
1591 if (buffer_output(r, vrprintf_buf,n) != APR_SUCCESS)
1600 AP_DECLARE_NONSTD(int) ap_rprintf(request_rec *r, const char *fmt, ...)
1605 if (r->connection->aborted)
1609 n = ap_vrprintf(r, fmt, va);
1615 AP_DECLARE_NONSTD(int) ap_rvputs(request_rec *r, ...)
1620 apr_size_t written = 0;
1622 if (r->connection->aborted)
1625 /* ### TODO: if the total output is large, put all the strings
1626 * ### into a single brigade, rather than flushing each time we
1627 * ### fill the buffer
1631 s = va_arg(va, const char *);
1636 if (buffer_output(r, s, len) != APR_SUCCESS) {
1647 AP_DECLARE(int) ap_rflush(request_rec *r)
1649 conn_rec *c = r->connection;
1652 old_write_filter_ctx *ctx;
1655 f = insert_old_write_filter(r);
1658 b = apr_bucket_flush_create(c->bucket_alloc);
1659 APR_BRIGADE_INSERT_TAIL(ctx->tmpbb, b);
1661 rv = ap_pass_brigade(r->output_filters, ctx->tmpbb);
1662 apr_brigade_cleanup(ctx->tmpbb);
1663 if (rv != APR_SUCCESS)
1670 * This function sets the Last-Modified output header field to the value
1671 * of the mtime field in the request structure - rationalized to keep it from
1672 * being in the future.
1674 AP_DECLARE(void) ap_set_last_modified(request_rec *r)
1676 if (!r->assbackwards) {
1677 apr_time_t mod_time = ap_rationalize_mtime(r, r->mtime);
1678 char *datestr = apr_palloc(r->pool, APR_RFC822_DATE_LEN);
1680 apr_rfc822_date(datestr, mod_time);
1681 apr_table_setn(r->headers_out, "Last-Modified", datestr);
1685 typedef struct hdr_ptr {
1687 apr_bucket_brigade *bb;
1689 static int send_header(void *data, const char *key, const char *val)
1691 ap_fputstrs(((hdr_ptr*)data)->f, ((hdr_ptr*)data)->bb,
1692 key, ": ", val, CRLF, NULL);
1695 AP_DECLARE(void) ap_send_interim_response(request_rec *r, int send_headers)
1698 char *status_line = NULL;
1701 if (r->proto_num < 1001) {
1702 /* don't send interim response to HTTP/1.0 Client */
1705 if (!ap_is_HTTP_INFO(r->status)) {
1706 ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
1707 "Status is %d - not sending interim response", r->status);
1710 if ((r->status == HTTP_CONTINUE) && !r->expecting_100) {
1712 * Don't send 100-Continue when there was no Expect: 100-continue
1713 * in the request headers. For origin servers this is a SHOULD NOT
1714 * for proxies it is a MUST NOT according to RFC 2616 8.2.3
1719 /* if we send an interim response, we're no longer in a state of
1720 * expecting one. Also, this could feasibly be in a subrequest,
1721 * so we need to propagate the fact that we responded.
1723 for (rr = r; rr != NULL; rr = rr->main) {
1724 rr->expecting_100 = 0;
1727 status_line = apr_pstrcat(r->pool, AP_SERVER_PROTOCOL, " ", r->status_line, CRLF, NULL);
1728 ap_xlate_proto_to_ascii(status_line, strlen(status_line));
1730 x.f = r->connection->output_filters;
1731 x.bb = apr_brigade_create(r->pool, r->connection->bucket_alloc);
1733 ap_fputs(x.f, x.bb, status_line);
1735 apr_table_do(send_header, &x, r->headers_out, NULL);
1736 apr_table_clear(r->headers_out);
1738 ap_fputs(x.f, x.bb, CRLF_ASCII);
1739 ap_fflush(x.f, x.bb);
1740 apr_brigade_destroy(x.bb);
1744 AP_IMPLEMENT_HOOK_RUN_ALL(int,post_read_request,
1745 (request_rec *r), (r), OK, DECLINED)
1746 AP_IMPLEMENT_HOOK_RUN_ALL(int,log_transaction,
1747 (request_rec *r), (r), OK, DECLINED)
1748 AP_IMPLEMENT_HOOK_RUN_FIRST(const char *,http_scheme,
1749 (const request_rec *r), (r), NULL)
1750 AP_IMPLEMENT_HOOK_RUN_FIRST(unsigned short,default_port,
1751 (const request_rec *r), (r), 0)