diff options
Diffstat (limited to 'rubbos/app/httpd-2.0.64/modules/http/http_request.c')
| -rw-r--r-- | rubbos/app/httpd-2.0.64/modules/http/http_request.c | 548 |
1 files changed, 0 insertions, 548 deletions
diff --git a/rubbos/app/httpd-2.0.64/modules/http/http_request.c b/rubbos/app/httpd-2.0.64/modules/http/http_request.c deleted file mode 100644 index c80816d2..00000000 --- a/rubbos/app/httpd-2.0.64/modules/http/http_request.c +++ /dev/null @@ -1,548 +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_request.c: functions to get and process requests - * - * Rob McCool 3/21/93 - * - * Thoroughly revamped by rst for Apache. NB this file reads - * best from the bottom up. - * - */ - -#include "apr_strings.h" -#include "apr_file_io.h" -#include "apr_fnmatch.h" - -#define APR_WANT_STRFUNC -#include "apr_want.h" - -#define CORE_PRIVATE -#include "ap_config.h" -#include "httpd.h" -#include "http_config.h" -#include "http_request.h" -#include "http_core.h" -#include "http_protocol.h" -#include "http_log.h" -#include "http_main.h" -#include "util_filter.h" -#include "util_charset.h" - -#include "mod_core.h" -#include "scoreboard.h" - -#if APR_HAVE_STDARG_H -#include <stdarg.h> -#endif - -/***************************************************************** - * - * Mainline request processing... - */ - -/* XXX A cleaner and faster way to do this might be to pass the request_rec - * down the filter chain as a parameter. It would need to change for - * subrequest vs. main request filters; perhaps the subrequest filter could - * make the switch. - */ -static void update_r_in_filters(ap_filter_t *f, - request_rec *from, - request_rec *to) -{ - while (f) { - if (f->r == from) { - f->r = to; - } - f = f->next; - } -} - -AP_DECLARE(void) ap_die(int type, request_rec *r) -{ - int error_index = ap_index_of_response(type); - char *custom_response = ap_response_code_string(r, error_index); - int recursive_error = 0; - request_rec *r_1st_err = r; - - if (type == AP_FILTER_ERROR) { - return; - } - - if (type == DONE) { - ap_finalize_request_protocol(r); - return; - } - - /* - * The following takes care of Apache redirects to custom response URLs - * Note that if we are already dealing with the response to some other - * error condition, we just report on the original error, and give up on - * any attempt to handle the other thing "intelligently"... - */ - if (r->status != HTTP_OK) { - recursive_error = type; - - while (r_1st_err->prev && (r_1st_err->prev->status != HTTP_OK)) - r_1st_err = r_1st_err->prev; /* Get back to original error */ - - if (r_1st_err != r) { - /* The recursive error was caused by an ErrorDocument specifying - * an internal redirect to a bad URI. ap_internal_redirect has - * changed the filter chains to point to the ErrorDocument's - * request_rec. Back out those changes so we can safely use the - * original failing request_rec to send the canned error message. - * - * ap_send_error_response gets rid of existing resource filters - * on the output side, so we can skip those. - */ - update_r_in_filters(r_1st_err->proto_output_filters, r, r_1st_err); - update_r_in_filters(r_1st_err->input_filters, r, r_1st_err); - } - - custom_response = NULL; /* Do NOT retry the custom thing! */ - } - - r->status = type; - - /* - * This test is done here so that none of the auth modules needs to know - * about proxy authentication. They treat it like normal auth, and then - * we tweak the status. - */ - if (HTTP_UNAUTHORIZED == r->status && PROXYREQ_PROXY == r->proxyreq) { - r->status = HTTP_PROXY_AUTHENTICATION_REQUIRED; - } - - /* If we don't want to keep the connection, make sure we mark that the - * connection is not eligible for keepalive. If we want to keep the - * connection, be sure that the request body (if any) has been read. - */ - if (ap_status_drops_connection(r->status)) { - r->connection->keepalive = AP_CONN_CLOSE; - } - - /* - * Two types of custom redirects --- plain text, and URLs. Plain text has - * a leading '"', so the URL code, here, is triggered on its absence - */ - - if (custom_response && custom_response[0] != '"') { - - if (ap_is_url(custom_response)) { - /* - * The URL isn't local, so lets drop through the rest of this - * apache code, and continue with the usual REDIRECT handler. - * But note that the client will ultimately see the wrong - * status... - */ - r->status = HTTP_MOVED_TEMPORARILY; - apr_table_setn(r->headers_out, "Location", custom_response); - } - else if (custom_response[0] == '/') { - const char *error_notes; - r->no_local_copy = 1; /* Do NOT send HTTP_NOT_MODIFIED for - * error documents! */ - /* - * This redirect needs to be a GET no matter what the original - * method was. - */ - apr_table_setn(r->subprocess_env, "REQUEST_METHOD", r->method); - - /* - * Provide a special method for modules to communicate - * more informative (than the plain canned) messages to us. - * Propagate them to ErrorDocuments via the ERROR_NOTES variable: - */ - if ((error_notes = apr_table_get(r->notes, - "error-notes")) != NULL) { - apr_table_setn(r->subprocess_env, "ERROR_NOTES", error_notes); - } - r->method = apr_pstrdup(r->pool, "GET"); - r->method_number = M_GET; - ap_internal_redirect(custom_response, r); - return; - } - else { - /* - * Dumb user has given us a bad url to redirect to --- fake up - * dying with a recursive server error... - */ - recursive_error = HTTP_INTERNAL_SERVER_ERROR; - ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, - "Invalid error redirection directive: %s", - custom_response); - } - } - ap_send_error_response(r_1st_err, recursive_error); -} - -static void check_pipeline_flush(request_rec *r) -{ - conn_rec *c = r->connection; - /* ### if would be nice if we could PEEK without a brigade. that would - ### allow us to defer creation of the brigade to when we actually - ### need to send a FLUSH. */ - apr_bucket_brigade *bb = apr_brigade_create(r->pool, c->bucket_alloc); - - /* Flush the filter contents if: - * - * 1) the connection will be closed - * 2) there isn't a request ready to be read - */ - /* ### shouldn't this read from the connection input filters? */ - /* ### is zero correct? that means "read one line" */ - if (r->connection->keepalive == AP_CONN_CLOSE || - ap_get_brigade(r->input_filters, bb, AP_MODE_EATCRLF, - APR_NONBLOCK_READ, 0) != APR_SUCCESS) { - apr_bucket *e = apr_bucket_flush_create(c->bucket_alloc); - - /* We just send directly to the connection based filters. At - * this point, we know that we have seen all of the data - * (request finalization sent an EOS bucket, which empties all - * of the request filters). We just want to flush the buckets - * if something hasn't been sent to the network yet. - */ - APR_BRIGADE_INSERT_HEAD(bb, e); - ap_pass_brigade(r->connection->output_filters, bb); - } -} - -void ap_process_request(request_rec *r) -{ - int access_status; - - /* Give quick handlers a shot at serving the request on the fast - * path, bypassing all of the other Apache hooks. - * - * This hook was added to enable serving files out of a URI keyed - * content cache ( e.g., Mike Abbott's Quick Shortcut Cache, - * described here: http://oss.sgi.com/projects/apache/mod_qsc.html ) - * - * It may have other uses as well, such as routing requests directly to - * content handlers that have the ability to grok HTTP and do their - * own access checking, etc (e.g. servlet engines). - * - * Use this hook with extreme care and only if you know what you are - * doing. - */ - if (ap_extended_status) - ap_time_process_request(r->connection->sbh, START_PREQUEST); - access_status = ap_run_quick_handler(r, 0); /* Not a look-up request */ - if (access_status == DECLINED) { - access_status = ap_process_request_internal(r); - if (access_status == OK) { - access_status = ap_invoke_handler(r); - } - } - - if (access_status == DONE) { - /* e.g., something not in storage like TRACE */ - access_status = OK; - } - - if (access_status == OK) { - ap_finalize_request_protocol(r); - } - else { - r->status = HTTP_OK; - ap_die(access_status, r); - } - - /* - * We want to flush the last packet if this isn't a pipelining connection - * *before* we start into logging. Suppose that the logging causes a DNS - * lookup to occur, which may have a high latency. If we hold off on - * this packet, then it'll appear like the link is stalled when really - * it's the application that's stalled. - */ - check_pipeline_flush(r); - ap_update_child_status(r->connection->sbh, SERVER_BUSY_LOG, r); - ap_run_log_transaction(r); - if (ap_extended_status) - ap_time_process_request(r->connection->sbh, STOP_PREQUEST); -} - -static apr_table_t *rename_original_env(apr_pool_t *p, apr_table_t *t) -{ - const apr_array_header_t *env_arr = apr_table_elts(t); - const apr_table_entry_t *elts = (const apr_table_entry_t *) env_arr->elts; - apr_table_t *new = apr_table_make(p, env_arr->nalloc); - int i; - - for (i = 0; i < env_arr->nelts; ++i) { - if (!elts[i].key) - continue; - apr_table_setn(new, apr_pstrcat(p, "REDIRECT_", elts[i].key, NULL), - elts[i].val); - } - - return new; -} - -static request_rec *internal_internal_redirect(const char *new_uri, - request_rec *r) { - int access_status; - request_rec *new; - - if (ap_is_recursion_limit_exceeded(r)) { - ap_die(HTTP_INTERNAL_SERVER_ERROR, r); - return NULL; - } - - new = (request_rec *) apr_pcalloc(r->pool, sizeof(request_rec)); - - new->connection = r->connection; - new->server = r->server; - new->pool = r->pool; - - /* - * A whole lot of this really ought to be shared with http_protocol.c... - * another missing cleanup. It's particularly inappropriate to be - * setting header_only, etc., here. - */ - - new->method = r->method; - new->method_number = r->method_number; - new->allowed_methods = ap_make_method_list(new->pool, 2); - ap_parse_uri(new, new_uri); - - new->request_config = ap_create_request_config(r->pool); - - new->per_dir_config = r->server->lookup_defaults; - - new->prev = r; - r->next = new; - - /* Must have prev and next pointers set before calling create_request - * hook. - */ - ap_run_create_request(new); - - /* Inherit the rest of the protocol info... */ - - new->the_request = r->the_request; - - new->allowed = r->allowed; - - new->status = r->status; - new->assbackwards = r->assbackwards; - new->header_only = r->header_only; - new->protocol = r->protocol; - new->proto_num = r->proto_num; - new->hostname = r->hostname; - new->request_time = r->request_time; - new->main = r->main; - - new->headers_in = r->headers_in; - new->headers_out = apr_table_make(r->pool, 12); - new->err_headers_out = r->err_headers_out; - new->subprocess_env = rename_original_env(r->pool, r->subprocess_env); - new->notes = apr_table_make(r->pool, 5); - new->allowed_methods = ap_make_method_list(new->pool, 2); - - new->htaccess = r->htaccess; - new->no_cache = r->no_cache; - new->expecting_100 = r->expecting_100; - new->no_local_copy = r->no_local_copy; - new->read_length = r->read_length; /* We can only read it once */ - new->vlist_validator = r->vlist_validator; - - new->proto_output_filters = r->proto_output_filters; - new->proto_input_filters = r->proto_input_filters; - - new->output_filters = new->proto_output_filters; - new->input_filters = new->proto_input_filters; - - if (new->main) { - /* Add back the subrequest filter, which we lost when - * we set output_filters to include only the protocol - * output filters from the original request. - */ - ap_add_output_filter_handle(ap_subreq_core_filter_handle, - NULL, new, new->connection); - } - - update_r_in_filters(new->input_filters, r, new); - update_r_in_filters(new->output_filters, r, new); - - apr_table_setn(new->subprocess_env, "REDIRECT_STATUS", - apr_itoa(r->pool, r->status)); - - /* - * XXX: hmm. This is because mod_setenvif and mod_unique_id really need - * to do their thing on internal redirects as well. Perhaps this is a - * misnamed function. - */ - if ((access_status = ap_run_post_read_request(new))) { - ap_die(access_status, new); - return NULL; - } - - return new; -} - -/* XXX: Is this function is so bogus and fragile that we deep-6 it? */ -AP_DECLARE(void) ap_internal_fast_redirect(request_rec *rr, request_rec *r) -{ - /* We need to tell POOL_DEBUG that we're guaranteeing that rr->pool - * will exist as long as r->pool. Otherwise we run into troubles because - * some values in this request will be allocated in r->pool, and others in - * rr->pool. - */ - apr_pool_join(r->pool, rr->pool); - r->proxyreq = rr->proxyreq; - r->no_cache = (r->no_cache && rr->no_cache); - r->no_local_copy = (r->no_local_copy && rr->no_local_copy); - r->mtime = rr->mtime; - r->uri = rr->uri; - r->filename = rr->filename; - r->canonical_filename = rr->canonical_filename; - r->path_info = rr->path_info; - r->args = rr->args; - r->finfo = rr->finfo; - r->handler = rr->handler; - ap_set_content_type(r, rr->content_type); - r->content_encoding = rr->content_encoding; - r->content_languages = rr->content_languages; - r->per_dir_config = rr->per_dir_config; - /* copy output headers from subrequest, but leave negotiation headers */ - r->notes = apr_table_overlay(r->pool, rr->notes, r->notes); - r->headers_out = apr_table_overlay(r->pool, rr->headers_out, - r->headers_out); - r->err_headers_out = apr_table_overlay(r->pool, rr->err_headers_out, - r->err_headers_out); - r->subprocess_env = apr_table_overlay(r->pool, rr->subprocess_env, - r->subprocess_env); - - r->output_filters = rr->output_filters; - r->input_filters = rr->input_filters; - - if (r->main) { - ap_add_output_filter_handle(ap_subreq_core_filter_handle, - NULL, r, r->connection); - } - else if (r->output_filters->frec == ap_subreq_core_filter_handle) { - ap_remove_output_filter(r->output_filters); - r->output_filters = r->output_filters->next; - } - - /* If any filters pointed at the now-defunct rr, we must point them - * at our "new" instance of r. In particular, some of rr's structures - * will now be bogus (say rr->headers_out). If a filter tried to modify - * their f->r structure when it is pointing to rr, the real request_rec - * will not get updated. Fix that here. - */ - update_r_in_filters(r->input_filters, rr, r); - update_r_in_filters(r->output_filters, rr, r); -} - -AP_DECLARE(void) ap_internal_redirect(const char *new_uri, request_rec *r) -{ - request_rec *new = internal_internal_redirect(new_uri, r); - int access_status; - - /* ap_die was already called, if an error occured */ - if (!new) { - return; - } - - access_status = ap_process_request_internal(new); - if (access_status == OK) { - if ((access_status = ap_invoke_handler(new)) != 0) { - ap_die(access_status, new); - return; - } - ap_finalize_request_protocol(new); - } - else { - ap_die(access_status, new); - } -} - -/* This function is designed for things like actions or CGI scripts, when - * using AddHandler, and you want to preserve the content type across - * an internal redirect. - */ -AP_DECLARE(void) ap_internal_redirect_handler(const char *new_uri, request_rec *r) -{ - int access_status; - request_rec *new = internal_internal_redirect(new_uri, r); - - /* ap_die was already called, if an error occured */ - if (!new) { - return; - } - - if (r->handler) - ap_set_content_type(new, r->content_type); - access_status = ap_process_request_internal(new); - if (access_status == OK) { - if ((access_status = ap_invoke_handler(new)) != 0) { - ap_die(access_status, new); - return; - } - ap_finalize_request_protocol(new); - } - else { - ap_die(access_status, new); - } -} - -AP_DECLARE(void) ap_allow_methods(request_rec *r, int reset, ...) -{ - const char *method; - va_list methods; - - /* - * Get rid of any current settings if requested; not just the - * well-known methods but any extensions as well. - */ - if (reset) { - ap_clear_method_list(r->allowed_methods); - } - - va_start(methods, reset); - while ((method = va_arg(methods, const char *)) != NULL) { - ap_method_list_add(r->allowed_methods, method); - } - va_end(methods); -} - -AP_DECLARE(void) ap_allow_standard_methods(request_rec *r, int reset, ...) -{ - int method; - va_list methods; - apr_int64_t mask; - - /* - * Get rid of any current settings if requested; not just the - * well-known methods but any extensions as well. - */ - if (reset) { - ap_clear_method_list(r->allowed_methods); - } - - mask = 0; - va_start(methods, reset); - while ((method = va_arg(methods, int)) != -1) { - mask |= (AP_METHOD_BIT << method); - } - va_end(methods); - - r->allowed_methods->method_mask |= mask; -} |