diff options
Diffstat (limited to 'rubbos/app/httpd-2.0.64/server/protocol.c')
| -rw-r--r-- | rubbos/app/httpd-2.0.64/server/protocol.c | 1573 |
1 files changed, 0 insertions, 1573 deletions
diff --git a/rubbos/app/httpd-2.0.64/server/protocol.c b/rubbos/app/httpd-2.0.64/server/protocol.c deleted file mode 100644 index 1e624f3d..00000000 --- a/rubbos/app/httpd-2.0.64/server/protocol.c +++ /dev/null @@ -1,1573 +0,0 @@ -/* Licensed to the Apache Software Foundation (ASF) under one or more - * contributor license agreements. See the NOTICE file distributed with - * this work for additional information regarding copyright ownership. - * The ASF licenses this file to You under the Apache License, Version 2.0 - * (the "License"); you may not use this file except in compliance with - * the License. You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -/* - * http_protocol.c --- routines which directly communicate with the client. - * - * Code originally by Rob McCool; much redone by Robert S. Thau - * and the Apache Software Foundation. - */ - -#include "apr.h" -#include "apr_strings.h" -#include "apr_buckets.h" -#include "apr_lib.h" -#include "apr_signal.h" -#include "apr_strmatch.h" - -#define APR_WANT_STDIO /* for sscanf */ -#define APR_WANT_STRFUNC -#define APR_WANT_MEMFUNC -#include "apr_want.h" - -#define CORE_PRIVATE -#include "util_filter.h" -#include "ap_config.h" -#include "httpd.h" -#include "http_config.h" -#include "http_core.h" -#include "http_protocol.h" -#include "http_main.h" -#include "http_request.h" -#include "http_vhost.h" -#include "http_log.h" /* For errors detected in basic auth common - * support code... */ -#include "mod_core.h" -#include "util_charset.h" -#include "util_ebcdic.h" -#include "scoreboard.h" - -#if APR_HAVE_STDARG_H -#include <stdarg.h> -#endif -#if APR_HAVE_UNISTD_H -#include <unistd.h> -#endif - - -APR_HOOK_STRUCT( - APR_HOOK_LINK(post_read_request) - APR_HOOK_LINK(log_transaction) - APR_HOOK_LINK(http_method) - APR_HOOK_LINK(default_port) -) - -AP_DECLARE_DATA ap_filter_rec_t *ap_old_write_func = NULL; - - -/* Patterns to match in ap_make_content_type() */ -static const char *needcset[] = { - "text/plain", - "text/html", - NULL -}; -static const apr_strmatch_pattern **needcset_patterns; -static const apr_strmatch_pattern *charset_pattern; - -AP_DECLARE(void) ap_setup_make_content_type(apr_pool_t *pool) -{ - int i; - for (i = 0; needcset[i]; i++) { - continue; - } - needcset_patterns = (const apr_strmatch_pattern **) - apr_palloc(pool, (i + 1) * sizeof(apr_strmatch_pattern *)); - for (i = 0; needcset[i]; i++) { - needcset_patterns[i] = apr_strmatch_precompile(pool, needcset[i], 0); - } - needcset_patterns[i] = NULL; - charset_pattern = apr_strmatch_precompile(pool, "charset=", 0); -} - -/* - * Builds the content-type that should be sent to the client from the - * content-type specified. The following rules are followed: - * - if type is NULL, type is set to ap_default_type(r) - * - if charset adding is disabled, stop processing and return type. - * - then, if there are no parameters on type, add the default charset - * - return type - */ -AP_DECLARE(const char *)ap_make_content_type(request_rec *r, const char *type) -{ - const apr_strmatch_pattern **pcset; - core_dir_config *conf = - (core_dir_config *)ap_get_module_config(r->per_dir_config, - &core_module); - core_request_config *request_conf; - apr_size_t type_len; - - if (!type) { - type = ap_default_type(r); - } - - if (conf->add_default_charset != ADD_DEFAULT_CHARSET_ON) { - return type; - } - - request_conf = - ap_get_module_config(r->request_config, &core_module); - if (request_conf->suppress_charset) { - return type; - } - - type_len = strlen(type); - - if (apr_strmatch(charset_pattern, type, type_len) != NULL) { - /* already has parameter, do nothing */ - /* XXX we don't check the validity */ - ; - } - else { - /* see if it makes sense to add the charset. At present, - * we only add it if the Content-type is one of needcset[] - */ - for (pcset = needcset_patterns; *pcset ; pcset++) { - if (apr_strmatch(*pcset, type, type_len) != NULL) { - struct iovec concat[3]; - concat[0].iov_base = (void *)type; - concat[0].iov_len = type_len; - concat[1].iov_base = (void *)"; charset="; - concat[1].iov_len = sizeof("; charset=") - 1; - concat[2].iov_base = (void *)(conf->add_default_charset_name); - concat[2].iov_len = strlen(conf->add_default_charset_name); - type = apr_pstrcatv(r->pool, concat, 3, NULL); - break; - } - } - } - - return type; -} - -AP_DECLARE(void) ap_set_content_length(request_rec *r, apr_off_t clength) -{ - r->clength = clength; - apr_table_setn(r->headers_out, "Content-Length", - apr_off_t_toa(r->pool, clength)); -} - -/* - * Return the latest rational time from a request/mtime (modification time) - * pair. We return the mtime unless it's in the future, in which case we - * return the current time. We use the request time as a reference in order - * to limit the number of calls to time(). We don't check for futurosity - * unless the mtime is at least as new as the reference. - */ -AP_DECLARE(apr_time_t) ap_rationalize_mtime(request_rec *r, apr_time_t mtime) -{ - apr_time_t now; - - /* For all static responses, it's almost certain that the file was - * last modified before the beginning of the request. So there's - * no reason to call time(NULL) again. But if the response has been - * created on demand, then it might be newer than the time the request - * started. In this event we really have to call time(NULL) again - * so that we can give the clients the most accurate Last-Modified. If we - * were given a time in the future, we return the current time - the - * Last-Modified can't be in the future. - */ - now = (mtime < r->request_time) ? r->request_time : apr_time_now(); - return (mtime > now) ? now : mtime; -} - -/* Min # of bytes to allocate when reading a request line */ -#define MIN_LINE_ALLOC 80 - -/* Get a line of protocol input, including any continuation lines - * caused by MIME folding (or broken clients) if fold != 0, and place it - * in the buffer s, of size n bytes, without the ending newline. - * - * If s is NULL, ap_rgetline_core will allocate necessary memory from r->pool. - * - * Returns APR_SUCCESS if there are no problems and sets *read to be - * the full length of s. - * - * APR_ENOSPC is returned if there is not enough buffer space. - * Other errors may be returned on other errors. - * - * The LF is *not* returned in the buffer. Therefore, a *read of 0 - * indicates that an empty line was read. - * - * Notes: Because the buffer uses 1 char for NUL, the most we can return is - * (n - 1) actual characters. - * - * If no LF is detected on the last line due to a dropped connection - * or a full buffer, that's considered an error. - */ -AP_DECLARE(apr_status_t) ap_rgetline_core(char **s, apr_size_t n, - apr_size_t *read, request_rec *r, - int fold, apr_bucket_brigade *bb) -{ - apr_status_t rv; - apr_bucket *e; - apr_size_t bytes_handled = 0, current_alloc = 0; - char *pos, *last_char = *s; - int do_alloc = (*s == NULL), saw_eos = 0; - - /* - * Initialize last_char as otherwise a random value will be compared - * against APR_ASCII_LF at the end of the loop if bb only contains - * zero-length buckets. - */ - if (last_char) - *last_char = '\0'; - - for (;;) { - apr_brigade_cleanup(bb); - rv = ap_get_brigade(r->input_filters, bb, AP_MODE_GETLINE, - APR_BLOCK_READ, 0); - - if (rv != APR_SUCCESS) { - return rv; - } - - /* Something horribly wrong happened. Someone didn't block! */ - if (APR_BRIGADE_EMPTY(bb)) { - return APR_EGENERAL; - } - - APR_BRIGADE_FOREACH(e, bb) { - const char *str; - apr_size_t len; - - /* If we see an EOS, don't bother doing anything more. */ - if (APR_BUCKET_IS_EOS(e)) { - saw_eos = 1; - break; - } - - rv = apr_bucket_read(e, &str, &len, APR_BLOCK_READ); - - if (rv != APR_SUCCESS) { - return rv; - } - - if (len == 0) { - /* no use attempting a zero-byte alloc (hurts when - * using --with-efence --enable-pool-debug) or - * doing any of the other logic either - */ - continue; - } - - /* Would this overrun our buffer? If so, we'll die. */ - if (n < bytes_handled + len) { - *read = bytes_handled; - if (*s) { - /* ensure this string is NUL terminated */ - if (bytes_handled > 0) { - (*s)[bytes_handled-1] = '\0'; - } - else { - (*s)[0] = '\0'; - } - } - return APR_ENOSPC; - } - - /* Do we have to handle the allocation ourselves? */ - if (do_alloc) { - /* We'll assume the common case where one bucket is enough. */ - if (!*s) { - current_alloc = len; - if (current_alloc < MIN_LINE_ALLOC) { - current_alloc = MIN_LINE_ALLOC; - } - *s = apr_palloc(r->pool, current_alloc); - } - else if (bytes_handled + len > current_alloc) { - /* Increase the buffer size */ - apr_size_t new_size = current_alloc * 2; - char *new_buffer; - - if (bytes_handled + len > new_size) { - new_size = (bytes_handled + len) * 2; - } - - new_buffer = apr_palloc(r->pool, new_size); - - /* Copy what we already had. */ - memcpy(new_buffer, *s, bytes_handled); - current_alloc = new_size; - *s = new_buffer; - } - } - - /* Just copy the rest of the data to the end of the old buffer. */ - pos = *s + bytes_handled; - memcpy(pos, str, len); - last_char = pos + len - 1; - - /* We've now processed that new data - update accordingly. */ - bytes_handled += len; - } - - /* If we got a full line of input, stop reading */ - if (last_char && (*last_char == APR_ASCII_LF)) { - break; - } - } - - /* Now NUL-terminate the string at the end of the line; - * if the last-but-one character is a CR, terminate there */ - if (last_char > *s && last_char[-1] == APR_ASCII_CR) { - last_char--; - } - *last_char = '\0'; - bytes_handled = last_char - *s; - - /* If we're folding, we have more work to do. - * - * Note that if an EOS was seen, we know we can't have another line. - */ - if (fold && bytes_handled && !saw_eos) { - for (;;) { - const char *str; - apr_size_t len; - char c; - - /* Clear the temp brigade for this filter read. */ - apr_brigade_cleanup(bb); - - /* We only care about the first byte. */ - rv = ap_get_brigade(r->input_filters, bb, AP_MODE_SPECULATIVE, - APR_BLOCK_READ, 1); - - if (rv != APR_SUCCESS) { - return rv; - } - - if (APR_BRIGADE_EMPTY(bb)) { - break; - } - - e = APR_BRIGADE_FIRST(bb); - - /* If we see an EOS, don't bother doing anything more. */ - if (APR_BUCKET_IS_EOS(e)) { - break; - } - - rv = apr_bucket_read(e, &str, &len, APR_BLOCK_READ); - - if (rv != APR_SUCCESS) { - apr_brigade_cleanup(bb); - return rv; - } - - /* Found one, so call ourselves again to get the next line. - * - * FIXME: If the folding line is completely blank, should we - * stop folding? Does that require also looking at the next - * char? - */ - /* When we call destroy, the buckets are deleted, so save that - * one character we need. This simplifies our execution paths - * at the cost of one character read. - */ - c = *str; - if (c == APR_ASCII_BLANK || c == APR_ASCII_TAB) { - /* Do we have enough space? We may be full now. */ - if (bytes_handled >= n) { - *read = n; - /* ensure this string is terminated */ - (*s)[n-1] = '\0'; - return APR_ENOSPC; - } - else { - apr_size_t next_size, next_len; - char *tmp; - - /* If we're doing the allocations for them, we have to - * give ourselves a NULL and copy it on return. - */ - if (do_alloc) { - tmp = NULL; - } else { - /* We're null terminated. */ - tmp = last_char; - } - - next_size = n - bytes_handled; - - rv = ap_rgetline_core(&tmp, next_size, - &next_len, r, 0, bb); - - if (rv != APR_SUCCESS) { - return rv; - } - - if (do_alloc && next_len > 0) { - char *new_buffer; - apr_size_t new_size = bytes_handled + next_len + 1; - - /* we need to alloc an extra byte for a null */ - new_buffer = apr_palloc(r->pool, new_size); - - /* Copy what we already had. */ - memcpy(new_buffer, *s, bytes_handled); - - /* copy the new line, including the trailing null */ - memcpy(new_buffer + bytes_handled, tmp, next_len + 1); - *s = new_buffer; - } - - bytes_handled += next_len; - } - } - else { /* next character is not tab or space */ - break; - } - } - } - - *read = bytes_handled; - return APR_SUCCESS; -} - -#if APR_CHARSET_EBCDIC -AP_DECLARE(apr_status_t) ap_rgetline(char **s, apr_size_t n, - apr_size_t *read, request_rec *r, - int fold, apr_bucket_brigade *bb) -{ - /* on ASCII boxes, ap_rgetline is a macro which simply invokes - * ap_rgetline_core with the same parms - * - * on EBCDIC boxes, each complete http protocol input line needs to be - * translated into the code page used by the compiler. Since - * ap_rgetline_core uses recursion, we do the translation in a wrapper - * function to insure that each input character gets translated only once. - */ - apr_status_t rv; - - rv = ap_rgetline_core(s, n, read, r, fold, bb); - if (rv == APR_SUCCESS) { - ap_xlate_proto_from_ascii(*s, *read); - } - return rv; -} -#endif - -AP_DECLARE(int) ap_getline(char *s, int n, request_rec *r, int fold) -{ - char *tmp_s = s; - apr_status_t rv; - apr_size_t len; - apr_bucket_brigade *tmp_bb; - - tmp_bb = apr_brigade_create(r->pool, r->connection->bucket_alloc); - rv = ap_rgetline(&tmp_s, n, &len, r, fold, tmp_bb); - apr_brigade_destroy(tmp_bb); - - /* Map the out-of-space condition to the old API. */ - if (rv == APR_ENOSPC) { - return n; - } - - /* Anything else is just bad. */ - if (rv != APR_SUCCESS) { - return -1; - } - - return (int)len; -} - -/* parse_uri: break apart the uri - * Side Effects: - * - sets r->args to rest after '?' (or NULL if no '?') - * - sets r->uri to request uri (without r->args part) - * - sets r->hostname (if not set already) from request (scheme://host:port) - */ -AP_CORE_DECLARE(void) ap_parse_uri(request_rec *r, const char *uri) -{ - int status = HTTP_OK; - - r->unparsed_uri = apr_pstrdup(r->pool, uri); - - if (r->method_number == M_CONNECT) { - status = apr_uri_parse_hostinfo(r->pool, uri, &r->parsed_uri); - } - else { - /* Simple syntax Errors in URLs are trapped by - * parse_uri_components(). - */ - status = apr_uri_parse(r->pool, uri, &r->parsed_uri); - } - - if (status == APR_SUCCESS) { - /* if it has a scheme we may need to do absoluteURI vhost stuff */ - if (r->parsed_uri.scheme - && !strcasecmp(r->parsed_uri.scheme, ap_http_method(r))) { - r->hostname = r->parsed_uri.hostname; - } - else if (r->method_number == M_CONNECT) { - r->hostname = r->parsed_uri.hostname; - } - - r->args = r->parsed_uri.query; - r->uri = r->parsed_uri.path ? r->parsed_uri.path - : apr_pstrdup(r->pool, "/"); - -#if defined(OS2) || defined(WIN32) - /* Handle path translations for OS/2 and plug security hole. - * This will prevent "http://www.wherever.com/..\..\/" from - * returning a directory for the root drive. - */ - { - char *x; - - for (x = r->uri; (x = strchr(x, '\\')) != NULL; ) - *x = '/'; - } -#endif /* OS2 || WIN32 */ - } - else { - r->args = NULL; - r->hostname = NULL; - r->status = HTTP_BAD_REQUEST; /* set error status */ - r->uri = apr_pstrdup(r->pool, uri); - } -} - -static int read_request_line(request_rec *r, apr_bucket_brigade *bb) -{ - const char *ll; - const char *uri; - const char *pro; - -#if 0 - conn_rec *conn = r->connection; -#endif - int major = 1, minor = 0; /* Assume HTTP/1.0 if non-"HTTP" protocol */ - char http[5]; - apr_size_t len; - int num_blank_lines = 0; - int max_blank_lines = r->server->limit_req_fields; - - if (max_blank_lines <= 0) { - max_blank_lines = DEFAULT_LIMIT_REQUEST_FIELDS; - } - - /* Read past empty lines until we get a real request line, - * a read error, the connection closes (EOF), or we timeout. - * - * We skip empty lines because browsers have to tack a CRLF on to the end - * of POSTs to support old CERN webservers. But note that we may not - * have flushed any previous response completely to the client yet. - * We delay the flush as long as possible so that we can improve - * performance for clients that are pipelining requests. If a request - * is pipelined then we won't block during the (implicit) read() below. - * If the requests aren't pipelined, then the client is still waiting - * for the final buffer flush from us, and we will block in the implicit - * read(). B_SAFEREAD ensures that the BUFF layer flushes if it will - * have to block during a read. - */ - - do { - apr_status_t rv; - - /* insure ap_rgetline allocates memory each time thru the loop - * if there are empty lines - */ - r->the_request = NULL; - rv = ap_rgetline(&(r->the_request), (apr_size_t)(r->server->limit_req_line + 2), - &len, r, 0, bb); - - if (rv != APR_SUCCESS) { - r->request_time = apr_time_now(); - - /* ap_rgetline returns APR_ENOSPC if it fills up the - * buffer before finding the end-of-line. This is only going to - * happen if it exceeds the configured limit for a request-line. - */ - if (rv == APR_ENOSPC) { - r->status = HTTP_REQUEST_URI_TOO_LARGE; - r->proto_num = HTTP_VERSION(1,0); - r->protocol = apr_pstrdup(r->pool, "HTTP/1.0"); - } - - return 0; - } - } while ((len <= 0) && (++num_blank_lines < max_blank_lines)); - - /* we've probably got something to do, ignore graceful restart requests */ - - r->request_time = apr_time_now(); - ll = r->the_request; - r->method = ap_getword_white(r->pool, &ll); - -#if 0 -/* XXX If we want to keep track of the Method, the protocol module should do - * it. That support isn't in the scoreboard yet. Hopefully next week - * sometime. rbb */ - ap_update_connection_status(AP_CHILD_THREAD_FROM_ID(conn->id), "Method", - r->method); -#endif - - uri = ap_getword_white(r->pool, &ll); - - /* Provide quick information about the request method as soon as known */ - - r->method_number = ap_method_number_of(r->method); - if (r->method_number == M_GET && r->method[0] == 'H') { - r->header_only = 1; - } - - ap_parse_uri(r, uri); - - if (ll[0]) { - r->assbackwards = 0; - pro = ll; - len = strlen(ll); - } else { - r->assbackwards = 1; - pro = "HTTP/0.9"; - len = 8; - } - r->protocol = apr_pstrmemdup(r->pool, pro, len); - - /* XXX ap_update_connection_status(conn->id, "Protocol", r->protocol); */ - - /* Avoid sscanf in the common case */ - if (len == 8 - && pro[0] == 'H' && pro[1] == 'T' && pro[2] == 'T' && pro[3] == 'P' - && pro[4] == '/' && apr_isdigit(pro[5]) && pro[6] == '.' - && apr_isdigit(pro[7])) { - r->proto_num = HTTP_VERSION(pro[5] - '0', pro[7] - '0'); - } - else if (3 == sscanf(r->protocol, "%4s/%u.%u", http, &major, &minor) - && (strcasecmp("http", http) == 0) - && (minor < HTTP_VERSION(1, 0)) ) /* don't allow HTTP/0.1000 */ - r->proto_num = HTTP_VERSION(major, minor); - else - r->proto_num = HTTP_VERSION(1, 0); - - return 1; -} - -AP_DECLARE(void) ap_get_mime_headers_core(request_rec *r, apr_bucket_brigade *bb) -{ - char *last_field = NULL; - apr_size_t last_len = 0; - apr_size_t alloc_len = 0; - char *field; - char *value; - apr_size_t len; - int fields_read = 0; - char *tmp_field; - - /* - * Read header lines until we get the empty separator line, a read error, - * the connection closes (EOF), reach the server limit, or we timeout. - */ - while(1) { - apr_status_t rv; - int folded = 0; - - field = NULL; - rv = ap_rgetline(&field, r->server->limit_req_fieldsize + 2, - &len, r, 0, bb); - - /* ap_rgetline returns APR_ENOSPC if it fills up the buffer before - * finding the end-of-line. This is only going to happen if it - * exceeds the configured limit for a field size. - */ - if (rv == APR_ENOSPC && field) { - r->status = HTTP_BAD_REQUEST; - /* insure ap_escape_html will terminate correctly */ - field[len - 1] = '\0'; - apr_table_setn(r->notes, "error-notes", - apr_pstrcat(r->pool, - "Size of a request header field " - "exceeds server limit.<br />\n" - "<pre>\n", - ap_escape_html(r->pool, field), - "</pre>\n", NULL)); - return; - } - - if (rv != APR_SUCCESS) { - r->status = HTTP_BAD_REQUEST; - return; - } - - if (last_field != NULL) { - if ((len > 0) && ((*field == '\t') || *field == ' ')) { - /* This line is a continuation of the preceding line(s), - * so append it to the line that we've set aside. - * Note: this uses a power-of-two allocator to avoid - * doing O(n) allocs and using O(n^2) space for - * continuations that span many many lines. - */ - apr_size_t fold_len = last_len + len + 1; /* trailing null */ - - if ((fold_len - 1) > r->server->limit_req_fieldsize) { - r->status = HTTP_BAD_REQUEST; - /* report what we have accumulated so far before the - * overflow (last_field) as the field with the problem - */ - apr_table_setn(r->notes, "error-notes", - apr_pstrcat(r->pool, - "Size of a request header field " - "after folding " - "exceeds server limit.<br />\n" - "<pre>\n", - ap_escape_html(r->pool, last_field), - "</pre>\n", NULL)); - return; - } - - if (fold_len > alloc_len) { - char *fold_buf; - alloc_len += alloc_len; - if (fold_len > alloc_len) { - alloc_len = fold_len; - } - fold_buf = (char *)apr_palloc(r->pool, alloc_len); - memcpy(fold_buf, last_field, last_len); - last_field = fold_buf; - } - memcpy(last_field + last_len, field, len +1); /* +1 for nul */ - last_len += len; - folded = 1; - } - else /* not a continuation line */ { - - if (r->server->limit_req_fields - && (++fields_read > r->server->limit_req_fields)) { - r->status = HTTP_BAD_REQUEST; - apr_table_setn(r->notes, "error-notes", - "The number of request header fields " - "exceeds this server's limit."); - return; - } - - if (!(value = strchr(last_field, ':'))) { /* Find ':' or */ - r->status = HTTP_BAD_REQUEST; /* abort bad request */ - apr_table_setn(r->notes, "error-notes", - apr_pstrcat(r->pool, - "Request header field is " - "missing ':' separator.<br />\n" - "<pre>\n", - ap_escape_html(r->pool, - last_field), - "</pre>\n", NULL)); - return; - } - - tmp_field = value - 1; /* last character of field-name */ - - *value++ = '\0'; /* NUL-terminate at colon */ - - while (*value == ' ' || *value == '\t') { - ++value; /* Skip to start of value */ - } - - /* Strip LWS after field-name: */ - while (tmp_field > last_field - && (*tmp_field == ' ' || *tmp_field == '\t')) { - *tmp_field-- = '\0'; - } - - /* Strip LWS after field-value: */ - tmp_field = last_field + last_len - 1; - while (tmp_field > value - && (*tmp_field == ' ' || *tmp_field == '\t')) { - *tmp_field-- = '\0'; - } - - apr_table_addn(r->headers_in, last_field, value); - - /* reset the alloc_len so that we'll allocate a new - * buffer if we have to do any more folding: we can't - * use the previous buffer because its contents are - * now part of r->headers_in - */ - alloc_len = 0; - - } /* end if current line is not a continuation starting with tab */ - } - - /* Found a blank line, stop. */ - if (len == 0) { - break; - } - - /* Keep track of this line so that we can parse it on - * the next loop iteration. (In the folded case, last_field - * has been updated already.) - */ - if (!folded) { - last_field = field; - last_len = len; - } - } - - apr_table_compress(r->headers_in, APR_OVERLAP_TABLES_MERGE); -} - -AP_DECLARE(void) ap_get_mime_headers(request_rec *r) -{ - apr_bucket_brigade *tmp_bb; - tmp_bb = apr_brigade_create(r->pool, r->connection->bucket_alloc); - ap_get_mime_headers_core(r, tmp_bb); - apr_brigade_destroy(tmp_bb); -} - -request_rec *ap_read_request(conn_rec *conn) -{ - request_rec *r; - apr_pool_t *p; - const char *expect; - int access_status; - apr_bucket_brigade *tmp_bb; - - apr_pool_create(&p, conn->pool); - apr_pool_tag(p, "request"); - r = apr_pcalloc(p, sizeof(request_rec)); - r->pool = p; - r->connection = conn; - r->server = conn->base_server; - - r->user = NULL; - r->ap_auth_type = NULL; - - r->allowed_methods = ap_make_method_list(p, 2); - - r->headers_in = apr_table_make(r->pool, 25); - r->subprocess_env = apr_table_make(r->pool, 25); - r->headers_out = apr_table_make(r->pool, 12); - r->err_headers_out = apr_table_make(r->pool, 5); - r->notes = apr_table_make(r->pool, 5); - - r->request_config = ap_create_request_config(r->pool); - /* Must be set before we run create request hook */ - - r->proto_output_filters = conn->output_filters; - r->output_filters = r->proto_output_filters; - r->proto_input_filters = conn->input_filters; - r->input_filters = r->proto_input_filters; - ap_run_create_request(r); - r->per_dir_config = r->server->lookup_defaults; - - r->sent_bodyct = 0; /* bytect isn't for body */ - - r->read_length = 0; - r->read_body = REQUEST_NO_BODY; - - r->status = HTTP_REQUEST_TIME_OUT; /* Until we get a request */ - r->the_request = NULL; - - tmp_bb = apr_brigade_create(r->pool, r->connection->bucket_alloc); - - /* Get the request... */ - if (!read_request_line(r, tmp_bb)) { - if (r->status == HTTP_REQUEST_URI_TOO_LARGE) { - ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, - "request failed: URI too long (longer than %d)", r->server->limit_req_line); - ap_send_error_response(r, 0); - ap_update_child_status(conn->sbh, SERVER_BUSY_LOG, r); - ap_run_log_transaction(r); - apr_brigade_destroy(tmp_bb); - return r; - } - - apr_brigade_destroy(tmp_bb); - return NULL; - } - - if (!r->assbackwards) { - ap_get_mime_headers_core(r, tmp_bb); - if (r->status != HTTP_REQUEST_TIME_OUT) { - ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, - "request failed: error reading the headers"); - ap_send_error_response(r, 0); - ap_update_child_status(conn->sbh, SERVER_BUSY_LOG, r); - ap_run_log_transaction(r); - apr_brigade_destroy(tmp_bb); - return r; - } - - if (apr_table_get(r->headers_in, "Transfer-Encoding") - && apr_table_get(r->headers_in, "Content-Length")) { - /* 2616 section 4.4, point 3: "if both Transfer-Encoding - * and Content-Length are received, the latter MUST be - * ignored"; so unset it here to prevent any confusion - * later. */ - apr_table_unset(r->headers_in, "Content-Length"); - } - } - else { - if (r->header_only) { - /* - * Client asked for headers only with HTTP/0.9, which doesn't send - * headers! Have to dink things just to make sure the error message - * comes through... - */ - ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, - "client sent invalid HTTP/0.9 request: HEAD %s", - r->uri); - r->header_only = 0; - r->status = HTTP_BAD_REQUEST; - ap_send_error_response(r, 0); - ap_update_child_status(conn->sbh, SERVER_BUSY_LOG, r); - ap_run_log_transaction(r); - apr_brigade_destroy(tmp_bb); - return r; - } - } - - apr_brigade_destroy(tmp_bb); - - r->status = HTTP_OK; /* Until further notice. */ - - /* update what we think the virtual host is based on the headers we've - * now read. may update status. - */ - ap_update_vhost_from_headers(r); - - /* we may have switched to another server */ - r->per_dir_config = r->server->lookup_defaults; - - if ((!r->hostname && (r->proto_num >= HTTP_VERSION(1, 1))) - || ((r->proto_num == HTTP_VERSION(1, 1)) - && !apr_table_get(r->headers_in, "Host"))) { - /* - * Client sent us an HTTP/1.1 or later request without telling us the - * hostname, either with a full URL or a Host: header. We therefore - * need to (as per the 1.1 spec) send an error. As a special case, - * HTTP/1.1 mentions twice (S9, S14.23) that a request MUST contain - * a Host: header, and the server MUST respond with 400 if it doesn't. - */ - r->status = HTTP_BAD_REQUEST; - ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, - "client sent HTTP/1.1 request without hostname " - "(see RFC2616 section 14.23): %s", r->uri); - } - - if (r->status != HTTP_OK) { - ap_send_error_response(r, 0); - ap_update_child_status(conn->sbh, SERVER_BUSY_LOG, r); - ap_run_log_transaction(r); - return r; - } - - if (((expect = apr_table_get(r->headers_in, "Expect")) != NULL) - && (expect[0] != '\0')) { - /* - * The Expect header field was added to HTTP/1.1 after RFC 2068 - * as a means to signal when a 100 response is desired and, - * unfortunately, to signal a poor man's mandatory extension that - * the server must understand or return 417 Expectation Failed. - */ - if (strcasecmp(expect, "100-continue") == 0) { - r->expecting_100 = 1; - } - else { - r->status = HTTP_EXPECTATION_FAILED; - ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r, - "client sent an unrecognized expectation value of " - "Expect: %s", expect); - ap_send_error_response(r, 0); - ap_update_child_status(conn->sbh, SERVER_BUSY_LOG, r); - ap_run_log_transaction(r); - return r; - } - } - - ap_add_input_filter_handle(ap_http_input_filter_handle, - NULL, r, r->connection); - - if ((access_status = ap_run_post_read_request(r))) { - ap_die(access_status, r); - ap_update_child_status(conn->sbh, SERVER_BUSY_LOG, r); - ap_run_log_transaction(r); - return NULL; - } - - return r; -} - -/* - * A couple of other functions which initialize some of the fields of - * a request structure, as appropriate for adjuncts of one kind or another - * to a request in progress. Best here, rather than elsewhere, since - * *someone* has to set the protocol-specific fields... - */ - -AP_DECLARE(void) ap_set_sub_req_protocol(request_rec *rnew, - const request_rec *r) -{ - rnew->the_request = r->the_request; /* Keep original request-line */ - - rnew->assbackwards = 1; /* Don't send headers from this. */ - rnew->no_local_copy = 1; /* Don't try to send HTTP_NOT_MODIFIED for a - * fragment. */ - rnew->method = "GET"; - rnew->method_number = M_GET; - rnew->protocol = "INCLUDED"; - - rnew->status = HTTP_OK; - - rnew->headers_in = apr_table_copy(rnew->pool, r->headers_in); - rnew->subprocess_env = apr_table_copy(rnew->pool, r->subprocess_env); - rnew->headers_out = apr_table_make(rnew->pool, 5); - rnew->err_headers_out = apr_table_make(rnew->pool, 5); - rnew->notes = apr_table_make(rnew->pool, 5); - - rnew->expecting_100 = r->expecting_100; - rnew->read_length = r->read_length; - rnew->read_body = REQUEST_NO_BODY; - - rnew->main = (request_rec *) r; -} - -static void end_output_stream(request_rec *r) -{ - conn_rec *c = r->connection; - apr_bucket_brigade *bb; - apr_bucket *b; - - bb = apr_brigade_create(r->pool, c->bucket_alloc); - b = apr_bucket_eos_create(c->bucket_alloc); - APR_BRIGADE_INSERT_TAIL(bb, b); - ap_pass_brigade(r->output_filters, bb); -} - -AP_DECLARE(void) ap_finalize_sub_req_protocol(request_rec *sub) -{ - /* tell the filter chain there is no more content coming */ - if (!sub->eos_sent) { - end_output_stream(sub); - } -} - -/* finalize_request_protocol is called at completion of sending the - * response. Its sole purpose is to send the terminating protocol - * information for any wrappers around the response message body - * (i.e., transfer encodings). It should have been named finalize_response. - */ -AP_DECLARE(void) ap_finalize_request_protocol(request_rec *r) -{ - (void) ap_discard_request_body(r); - - /* tell the filter chain there is no more content coming */ - if (!r->eos_sent) { - end_output_stream(r); - } -} - -/* - * Support for the Basic authentication protocol, and a bit for Digest. - */ -AP_DECLARE(void) ap_note_auth_failure(request_rec *r) -{ - const char *type = ap_auth_type(r); - if (type) { - if (!strcasecmp(type, "Basic")) - ap_note_basic_auth_failure(r); - else if (!strcasecmp(type, "Digest")) - ap_note_digest_auth_failure(r); - } - else { - ap_log_rerror(APLOG_MARK, APLOG_ERR, - 0, r, "need AuthType to note auth failure: %s", r->uri); - } -} - -AP_DECLARE(void) ap_note_basic_auth_failure(request_rec *r) -{ - const char *type = ap_auth_type(r); - - /* if there is no AuthType configure or it is something other than - * Basic, let ap_note_auth_failure() deal with it - */ - if (!type || strcasecmp(type, "Basic")) - ap_note_auth_failure(r); - else - apr_table_setn(r->err_headers_out, - (PROXYREQ_PROXY == r->proxyreq) ? "Proxy-Authenticate" - : "WWW-Authenticate", - apr_pstrcat(r->pool, "Basic realm=\"", ap_auth_name(r), - "\"", NULL)); -} - -AP_DECLARE(void) ap_note_digest_auth_failure(request_rec *r) -{ - apr_table_setn(r->err_headers_out, - (PROXYREQ_PROXY == r->proxyreq) ? "Proxy-Authenticate" - : "WWW-Authenticate", - /* need APR_TIME_T_FMT_HEX */ - apr_psprintf(r->pool, "Digest realm=\"%s\", nonce=\"%llx\"", - ap_auth_name(r), r->request_time)); -} - -AP_DECLARE(int) ap_get_basic_auth_pw(request_rec *r, const char **pw) -{ - const char *auth_line = apr_table_get(r->headers_in, - (PROXYREQ_PROXY == r->proxyreq) - ? "Proxy-Authorization" - : "Authorization"); - const char *t; - - if (!(t = ap_auth_type(r)) || strcasecmp(t, "Basic")) - return DECLINED; - - if (!ap_auth_name(r)) { - ap_log_rerror(APLOG_MARK, APLOG_ERR, - 0, r, "need AuthName: %s", r->uri); - return HTTP_INTERNAL_SERVER_ERROR; - } - - if (!auth_line) { - ap_note_basic_auth_failure(r); - return HTTP_UNAUTHORIZED; - } - - if (strcasecmp(ap_getword(r->pool, &auth_line, ' '), "Basic")) { - /* Client tried to authenticate using wrong auth scheme */ - ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, - "client used wrong authentication scheme: %s", r->uri); - ap_note_basic_auth_failure(r); - return HTTP_UNAUTHORIZED; - } - - while (*auth_line == ' ' || *auth_line == '\t') { - auth_line++; - } - - t = ap_pbase64decode(r->pool, auth_line); - r->user = ap_getword_nulls (r->pool, &t, ':'); - r->ap_auth_type = "Basic"; - - *pw = t; - - return OK; -} - -struct content_length_ctx { - int data_sent; /* true if the C-L filter has already sent at - * least one bucket on to the next output filter - * for this request - */ -}; - -/* This filter computes the content length, but it also computes the number - * of bytes sent to the client. This means that this filter will always run - * through all of the buckets in all brigades - */ -AP_CORE_DECLARE_NONSTD(apr_status_t) ap_content_length_filter( - ap_filter_t *f, - apr_bucket_brigade *b) -{ - request_rec *r = f->r; - struct content_length_ctx *ctx; - apr_bucket *e; - int eos = 0; - apr_read_type_e eblock = APR_NONBLOCK_READ; - - ctx = f->ctx; - if (!ctx) { - f->ctx = ctx = apr_palloc(r->pool, sizeof(*ctx)); - ctx->data_sent = 0; - } - - /* Loop through this set of buckets to compute their length - */ - e = APR_BRIGADE_FIRST(b); - while (e != APR_BRIGADE_SENTINEL(b)) { - if (APR_BUCKET_IS_EOS(e)) { - eos = 1; - break; - } - if (e->length == (apr_size_t)-1) { - apr_size_t len; - const char *ignored; - apr_status_t rv; - - /* This is probably a pipe bucket. Send everything - * prior to this, and then read the data for this bucket. - */ - rv = apr_bucket_read(e, &ignored, &len, eblock); - if (rv == APR_SUCCESS) { - /* Attempt a nonblocking read next time through */ - eblock = APR_NONBLOCK_READ; - r->bytes_sent += len; - } - else if (APR_STATUS_IS_EAGAIN(rv)) { - /* Output everything prior to this bucket, and then - * do a blocking read on the next batch. - */ - if (e != APR_BRIGADE_FIRST(b)) { - apr_bucket_brigade *split = apr_brigade_split(b, e); - apr_bucket *flush = apr_bucket_flush_create(r->connection->bucket_alloc); - - APR_BRIGADE_INSERT_TAIL(b, flush); - rv = ap_pass_brigade(f->next, b); - if (rv != APR_SUCCESS || f->c->aborted) { - apr_brigade_destroy(split); - return rv; - } - b = split; - e = APR_BRIGADE_FIRST(b); - - ctx->data_sent = 1; - } - eblock = APR_BLOCK_READ; - continue; - } - else { - ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r, - "ap_content_length_filter: " - "apr_bucket_read() failed"); - return rv; - } - } - else { - r->bytes_sent += e->length; - } - e = APR_BUCKET_NEXT(e); - } - - /* If we've now seen the entire response and it's otherwise - * okay to set the C-L in the response header, then do so now. - * - * We can only set a C-L in the response header if we haven't already - * sent any buckets on to the next output filter for this request. - */ - if (ctx->data_sent == 0 && eos && - /* don't whack the C-L if it has already been set for a HEAD - * by something like proxy. the brigade only has an EOS bucket - * in this case, making r->bytes_sent zero. - * - * if r->bytes_sent > 0 we have a (temporary) body whose length may - * have been changed by a filter. the C-L header might not have been - * updated so we do it here. long term it would be cleaner to have - * such filters update or remove the C-L header, and just use it - * if present. - */ - !(r->header_only && r->bytes_sent == 0 && - apr_table_get(r->headers_out, "Content-Length"))) { - ap_set_content_length(r, r->bytes_sent); - } - - ctx->data_sent = 1; - return ap_pass_brigade(f->next, b); -} - -/* - * Send the body of a response to the client. - */ -AP_DECLARE(apr_status_t) ap_send_fd(apr_file_t *fd, request_rec *r, - apr_off_t offset, apr_size_t len, - apr_size_t *nbytes) -{ - conn_rec *c = r->connection; - apr_bucket_brigade *bb = NULL; - apr_bucket *b; - apr_status_t rv; - - bb = apr_brigade_create(r->pool, c->bucket_alloc); - b = apr_bucket_file_create(fd, offset, len, r->pool, c->bucket_alloc); - APR_BRIGADE_INSERT_TAIL(bb, b); - - rv = ap_pass_brigade(r->output_filters, bb); - if (rv != APR_SUCCESS) { - *nbytes = 0; /* no way to tell how many were actually sent */ - } - else { - *nbytes = len; - } - - return rv; -} - -#if APR_HAS_MMAP -/* send data from an in-memory buffer */ -AP_DECLARE(size_t) ap_send_mmap(apr_mmap_t *mm, request_rec *r, size_t offset, - size_t length) -{ - conn_rec *c = r->connection; - apr_bucket_brigade *bb = NULL; - apr_bucket *b; - - bb = apr_brigade_create(r->pool, c->bucket_alloc); - b = apr_bucket_mmap_create(mm, offset, length, c->bucket_alloc); - APR_BRIGADE_INSERT_TAIL(bb, b); - ap_pass_brigade(r->output_filters, bb); - - return mm->size; /* XXX - change API to report apr_status_t? */ -} -#endif /* APR_HAS_MMAP */ - -typedef struct { - apr_bucket_brigade *bb; -} old_write_filter_ctx; - -AP_CORE_DECLARE_NONSTD(apr_status_t) ap_old_write_filter( - ap_filter_t *f, apr_bucket_brigade *bb) -{ - old_write_filter_ctx *ctx = f->ctx; - - AP_DEBUG_ASSERT(ctx); - - if (ctx->bb != 0) { - /* whatever is coming down the pipe (we don't care), we - * can simply insert our buffered data at the front and - * pass the whole bundle down the chain. - */ - APR_BRIGADE_CONCAT(ctx->bb, bb); - bb = ctx->bb; - ctx->bb = NULL; - } - - return ap_pass_brigade(f->next, bb); -} - -static apr_status_t buffer_output(request_rec *r, - const char *str, apr_size_t len) -{ - conn_rec *c = r->connection; - ap_filter_t *f; - old_write_filter_ctx *ctx; - - if (len == 0) - return APR_SUCCESS; - - /* future optimization: record some flags in the request_rec to - * say whether we've added our filter, and whether it is first. - */ - - /* this will typically exit on the first test */ - for (f = r->output_filters; f != NULL; f = f->next) { - if (ap_old_write_func == f->frec) - break; - } - - if (f == NULL) { - /* our filter hasn't been added yet */ - ctx = apr_pcalloc(r->pool, sizeof(*ctx)); - ap_add_output_filter("OLD_WRITE", ctx, r, r->connection); - f = r->output_filters; - } - - /* if the first filter is not our buffering filter, then we have to - * deliver the content through the normal filter chain - */ - if (f != r->output_filters) { - apr_bucket_brigade *bb = apr_brigade_create(r->pool, c->bucket_alloc); - apr_bucket *b = apr_bucket_transient_create(str, len, c->bucket_alloc); - APR_BRIGADE_INSERT_TAIL(bb, b); - - return ap_pass_brigade(r->output_filters, bb); - } - - /* grab the context from our filter */ - ctx = r->output_filters->ctx; - - if (ctx->bb == NULL) { - ctx->bb = apr_brigade_create(r->pool, c->bucket_alloc); - } - - return ap_fwrite(f->next, ctx->bb, str, len); -} - -AP_DECLARE(int) ap_rputc(int c, request_rec *r) -{ - char c2 = (char)c; - - if (r->connection->aborted) { - return -1; - } - - if (buffer_output(r, &c2, 1) != APR_SUCCESS) - return -1; - - return c; -} - -AP_DECLARE(int) ap_rputs(const char *str, request_rec *r) -{ - apr_size_t len; - - if (r->connection->aborted) - return -1; - - if (buffer_output(r, str, len = strlen(str)) != APR_SUCCESS) - return -1; - - return len; -} - -AP_DECLARE(int) ap_rwrite(const void *buf, int nbyte, request_rec *r) -{ - if (r->connection->aborted) - return -1; - - if (buffer_output(r, buf, nbyte) != APR_SUCCESS) - return -1; - - return nbyte; -} - -struct ap_vrprintf_data { - apr_vformatter_buff_t vbuff; - request_rec *r; - char *buff; -}; - -static apr_status_t r_flush(apr_vformatter_buff_t *buff) -{ - /* callback function passed to ap_vformatter to be called when - * vformatter needs to write into buff and buff.curpos > buff.endpos */ - - /* ap_vrprintf_data passed as a apr_vformatter_buff_t, which is then - * "downcast" to an ap_vrprintf_data */ - struct ap_vrprintf_data *vd = (struct ap_vrprintf_data*)buff; - - if (vd->r->connection->aborted) - return -1; - - /* r_flush is called when vbuff is completely full */ - if (buffer_output(vd->r, vd->buff, AP_IOBUFSIZE)) { - return -1; - } - - /* reset the buffer position */ - vd->vbuff.curpos = vd->buff; - vd->vbuff.endpos = vd->buff + AP_IOBUFSIZE; - - return APR_SUCCESS; -} - -AP_DECLARE(int) ap_vrprintf(request_rec *r, const char *fmt, va_list va) -{ - apr_size_t written; - struct ap_vrprintf_data vd; - char vrprintf_buf[AP_IOBUFSIZE]; - - vd.vbuff.curpos = vrprintf_buf; - vd.vbuff.endpos = vrprintf_buf + AP_IOBUFSIZE; - vd.r = r; - vd.buff = vrprintf_buf; - - if (r->connection->aborted) - return -1; - - written = apr_vformatter(r_flush, &vd.vbuff, fmt, va); - - /* tack on null terminator on remaining string */ - *(vd.vbuff.curpos) = '\0'; - - if (written != -1) { - int n = vd.vbuff.curpos - vrprintf_buf; - - /* last call to buffer_output, to finish clearing the buffer */ - if (buffer_output(r, vrprintf_buf,n) != APR_SUCCESS) - return -1; - - written += n; - } - - return written; -} - -AP_DECLARE_NONSTD(int) ap_rprintf(request_rec *r, const char *fmt, ...) -{ - va_list va; - int n; - - if (r->connection->aborted) - return -1; - - va_start(va, fmt); - n = ap_vrprintf(r, fmt, va); - va_end(va); - - return n; -} - -AP_DECLARE_NONSTD(int) ap_rvputs(request_rec *r, ...) -{ - va_list va; - const char *s; - apr_size_t len; - apr_size_t written = 0; - - if (r->connection->aborted) - return -1; - - /* ### TODO: if the total output is large, put all the strings - * ### into a single brigade, rather than flushing each time we - * ### fill the buffer - */ - va_start(va, r); - while (1) { - s = va_arg(va, const char *); - if (s == NULL) - break; - - len = strlen(s); - if (buffer_output(r, s, len) != APR_SUCCESS) { - return -1; - } - - written += len; - } - va_end(va); - - return written; -} - -AP_DECLARE(int) ap_rflush(request_rec *r) -{ - conn_rec *c = r->connection; - apr_bucket_brigade *bb; - apr_bucket *b; - - bb = apr_brigade_create(r->pool, c->bucket_alloc); - b = apr_bucket_flush_create(c->bucket_alloc); - APR_BRIGADE_INSERT_TAIL(bb, b); - if (ap_pass_brigade(r->output_filters, bb) != APR_SUCCESS) - return -1; - - return 0; -} - -/* - * This function sets the Last-Modified output header field to the value - * of the mtime field in the request structure - rationalized to keep it from - * being in the future. - */ -AP_DECLARE(void) ap_set_last_modified(request_rec *r) -{ - if (!r->assbackwards) { - apr_time_t mod_time = ap_rationalize_mtime(r, r->mtime); - char *datestr = apr_palloc(r->pool, APR_RFC822_DATE_LEN); - - apr_rfc822_date(datestr, mod_time); - apr_table_setn(r->headers_out, "Last-Modified", datestr); - } -} - -AP_IMPLEMENT_HOOK_RUN_ALL(int,post_read_request, - (request_rec *r), (r), OK, DECLINED) -AP_IMPLEMENT_HOOK_RUN_ALL(int,log_transaction, - (request_rec *r), (r), OK, DECLINED) -AP_IMPLEMENT_HOOK_RUN_FIRST(const char *,http_method, - (const request_rec *r), (r), NULL) -AP_IMPLEMENT_HOOK_RUN_FIRST(unsigned short,default_port, - (const request_rec *r), (r), 0) |