mirror of
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00933409fe
schema when storing the worker url. Thus preventing case sensitive URI's in BalancerMembers to get broken. git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@328463 13f79535-47bb-0310-9956-ffa450edef68
1965 lines
69 KiB
C
1965 lines
69 KiB
C
/* Copyright 1999-2005 The Apache Software Foundation or its licensors, as
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* applicable.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#define CORE_PRIVATE
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#include "mod_proxy.h"
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#include "mod_core.h"
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#include "apr_optional.h"
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#include "scoreboard.h"
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#include "mod_status.h"
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#if (MODULE_MAGIC_NUMBER_MAJOR > 20020903)
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#include "mod_ssl.h"
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#else
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APR_DECLARE_OPTIONAL_FN(int, ssl_proxy_enable, (conn_rec *));
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APR_DECLARE_OPTIONAL_FN(int, ssl_engine_disable, (conn_rec *));
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APR_DECLARE_OPTIONAL_FN(int, ssl_is_https, (conn_rec *));
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APR_DECLARE_OPTIONAL_FN(char *, ssl_var_lookup,
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(apr_pool_t *, server_rec *,
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conn_rec *, request_rec *, char *));
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#endif
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#ifndef MAX
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#define MAX(x,y) ((x) >= (y) ? (x) : (y))
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#endif
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/*
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* A Web proxy module. Stages:
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*
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* translate_name: set filename to proxy:<URL>
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* map_to_storage: run proxy_walk (rather than directory_walk/file_walk)
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* can't trust directory_walk/file_walk since these are
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* not in our filesystem. Prevents mod_http from serving
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* the TRACE request we will set aside to handle later.
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* type_checker: set type to PROXY_MAGIC_TYPE if filename begins proxy:
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* fix_ups: convert the URL stored in the filename to the
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* canonical form.
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* handler: handle proxy requests
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*/
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/* -------------------------------------------------------------- */
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/* Translate the URL into a 'filename' */
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#define PROXY_COPY_CONF_PARAMS(w, c) \
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do { \
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(w)->timeout = (c)->timeout; \
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(w)->timeout_set = (c)->timeout_set; \
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(w)->recv_buffer_size = (c)->recv_buffer_size; \
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(w)->recv_buffer_size_set = (c)->recv_buffer_size_set; \
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(w)->io_buffer_size = (c)->io_buffer_size; \
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(w)->io_buffer_size_set = (c)->io_buffer_size_set; \
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} while (0)
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static const char *set_worker_param(apr_pool_t *p,
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proxy_worker *worker,
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const char *key,
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const char *val)
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{
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int ival;
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if (!strcasecmp(key, "loadfactor")) {
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/* Normalized load factor. Used with BalancerMamber,
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* it is a number between 1 and 100.
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*/
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worker->lbfactor = atoi(val);
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if (worker->lbfactor < 1 || worker->lbfactor > 100)
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return "LoadFactor must be number between 1..100";
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}
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else if (!strcasecmp(key, "retry")) {
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/* If set it will give the retry timeout for the worker
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* The default value is 60 seconds, meaning that if
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* in error state, it will be retried after that timeout.
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*/
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ival = atoi(val);
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if (ival < 1)
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return "Retry must be at least one second";
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worker->retry = apr_time_from_sec(ival);
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}
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else if (!strcasecmp(key, "ttl")) {
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/* Time in seconds that will destroy all the connections
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* that exced the smax
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*/
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ival = atoi(val);
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if (ival < 1)
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return "TTL must be at least one second";
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worker->ttl = apr_time_from_sec(ival);
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}
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else if (!strcasecmp(key, "min")) {
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/* Initial number of connections to remote
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*/
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ival = atoi(val);
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if (ival < 0)
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return "Min must be a positive number";
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worker->min = ival;
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}
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else if (!strcasecmp(key, "max")) {
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/* Maximum number of connections to remote
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*/
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ival = atoi(val);
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if (ival < 0)
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return "Max must be a positive number";
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worker->hmax = ival;
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}
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/* XXX: More inteligent naming needed */
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else if (!strcasecmp(key, "smax")) {
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/* Maximum number of connections to remote that
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* will not be destroyed
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*/
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ival = atoi(val);
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if (ival < 0)
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return "Smax must be a positive number";
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worker->smax = ival;
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}
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else if (!strcasecmp(key, "acquire")) {
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/* Acquire timeout in milliseconds.
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* If set this will be the maximum time to
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* wait for a free connection.
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*/
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ival = atoi(val);
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if (ival < 1)
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return "Acquire must be at least one mili second";
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worker->acquire = apr_time_make(0, ival * 1000);
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worker->acquire_set = 1;
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}
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else if (!strcasecmp(key, "timeout")) {
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/* Connection timeout in seconds.
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* Defaults to server timeout.
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*/
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ival = atoi(val);
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if (ival < 1)
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return "Timeout must be at least one second";
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worker->timeout = apr_time_from_sec(ival);
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worker->timeout_set = 1;
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}
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else if (!strcasecmp(key, "iobuffersize")) {
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long s = atol(val);
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worker->io_buffer_size = ((s > AP_IOBUFSIZE) ? s : AP_IOBUFSIZE);
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worker->io_buffer_size_set = 1;
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}
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else if (!strcasecmp(key, "receivebuffersize")) {
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ival = atoi(val);
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if (ival < 512 && ival != 0) {
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return "ReceiveBufferSize must be >= 512 bytes, or 0 for system default.";
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}
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worker->recv_buffer_size = ival;
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worker->recv_buffer_size_set = 1;
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}
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else if (!strcasecmp(key, "keepalive")) {
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if (!strcasecmp(val, "on"))
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worker->keepalive = 1;
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else if (!strcasecmp(val, "off"))
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worker->keepalive = 0;
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else
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return "KeepAlive must be On|Off";
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worker->keepalive_set = 1;
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}
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else if (!strcasecmp(key, "route")) {
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/* Worker route.
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*/
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if (strlen(val) > PROXY_WORKER_MAX_ROUTE_SIZ)
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return "Route length must be < 64 characters";
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worker->route = apr_pstrdup(p, val);
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}
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else if (!strcasecmp(key, "redirect")) {
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/* Worker redirection route.
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*/
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if (strlen(val) > PROXY_WORKER_MAX_ROUTE_SIZ)
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return "Redirect length must be < 64 characters";
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worker->redirect = apr_pstrdup(p, val);
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}
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else if (!strcasecmp(key, "status")) {
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const char *v;
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int mode = 1;
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/* Worker status.
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*/
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for (v = val; *v; v++) {
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if (*v == '+') {
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mode = 1;
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v++;
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}
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else if (*v == '-') {
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mode = 0;
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v++;
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}
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if (*v == 'D' || *v == 'd') {
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if (mode)
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worker->status |= PROXY_WORKER_DISABLED;
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else
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worker->status &= ~PROXY_WORKER_DISABLED;
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}
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else if (*v == 'S' || *v == 's') {
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if (mode)
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worker->status |= PROXY_WORKER_STOPPED;
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else
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worker->status &= ~PROXY_WORKER_STOPPED;
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}
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else if (*v == 'E' || *v == 'e') {
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if (mode)
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worker->status |= PROXY_WORKER_IN_ERROR;
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else
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worker->status &= ~PROXY_WORKER_IN_ERROR;
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}
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else {
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return "Unknow status parameter option";
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}
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}
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}
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else {
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return "unknown Worker parameter";
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}
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return NULL;
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}
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static const char *set_balancer_param(proxy_server_conf *conf,
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apr_pool_t *p,
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proxy_balancer *balancer,
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const char *key,
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const char *val)
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{
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int ival;
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if (!strcasecmp(key, "stickysession")) {
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/* Balancer sticky session name.
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* Set to something like JSESSIONID or
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* PHPSESSIONID, etc..,
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*/
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balancer->sticky = apr_pstrdup(p, val);
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}
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else if (!strcasecmp(key, "nofailover")) {
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/* If set to 'on' the session will break
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* if the worker is in error state or
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* disabled.
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*/
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if (!strcasecmp(val, "on"))
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balancer->sticky_force = 1;
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else if (!strcasecmp(val, "off"))
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balancer->sticky_force = 0;
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else
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return "failover must be On|Off";
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}
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else if (!strcasecmp(key, "timeout")) {
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/* Balancer timeout in seconds.
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* If set this will be the maximum time to
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* wait for a free worker.
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* Default is not to wait.
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*/
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ival = atoi(val);
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if (ival < 1)
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return "timeout must be at least one second";
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balancer->timeout = apr_time_from_sec(ival);
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}
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else if (!strcasecmp(key, "maxattempts")) {
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/* Maximum number of failover attempts before
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* giving up.
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*/
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ival = atoi(val);
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if (ival < 0)
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return "maximum number of attempts must be a positive number";
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balancer->max_attempts = ival;
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balancer->max_attempts_set = 1;
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}
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else if (!strcasecmp(key, "lbmethod")) {
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proxy_balancer_method *provider;
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provider = ap_lookup_provider(PROXY_LBMETHOD, val, "0");
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if (provider) {
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balancer->lbmethod = provider;
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return NULL;
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}
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return "unknown lbmethod";
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}
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else {
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return "unknown Balancer parameter";
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}
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return NULL;
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}
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static int alias_match(const char *uri, const char *alias_fakename)
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{
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const char *end_fakename = alias_fakename + strlen(alias_fakename);
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const char *aliasp = alias_fakename, *urip = uri;
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const char *end_uri = uri + strlen(uri);
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while (aliasp < end_fakename && urip < end_uri) {
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if (*aliasp == '/') {
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/* any number of '/' in the alias matches any number in
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* the supplied URI, but there must be at least one...
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*/
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if (*urip != '/')
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return 0;
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while (*aliasp == '/')
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++aliasp;
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while (*urip == '/')
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++urip;
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}
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else {
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/* Other characters are compared literally */
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if (*urip++ != *aliasp++)
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return 0;
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}
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}
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/* fixup badly encoded stuff (e.g. % as last character) */
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if (aliasp > end_fakename) {
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aliasp = end_fakename;
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}
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if (urip > end_uri) {
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urip = end_uri;
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}
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/* We reach the end of the uri before the end of "alias_fakename"
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* for example uri is "/" and alias_fakename "/examples"
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*/
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if (urip == end_uri && aliasp!=end_fakename) {
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return 0;
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}
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/* Check last alias path component matched all the way */
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if (aliasp[-1] != '/' && *urip != '\0' && *urip != '/')
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return 0;
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/* Return number of characters from URI which matched (may be
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* greater than length of alias, since we may have matched
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* doubled slashes)
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*/
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return urip - uri;
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}
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/* Detect if an absoluteURI should be proxied or not. Note that we
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* have to do this during this phase because later phases are
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* "short-circuiting"... i.e. translate_names will end when the first
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* module returns OK. So for example, if the request is something like:
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*
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* GET http://othervhost/cgi-bin/printenv HTTP/1.0
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*
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* mod_alias will notice the /cgi-bin part and ScriptAlias it and
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* short-circuit the proxy... just because of the ordering in the
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* configuration file.
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*/
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static int proxy_detect(request_rec *r)
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{
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void *sconf = r->server->module_config;
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proxy_server_conf *conf =
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(proxy_server_conf *) ap_get_module_config(sconf, &proxy_module);
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/* Ick... msvc (perhaps others) promotes ternary short results to int */
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if (conf->req && r->parsed_uri.scheme) {
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/* but it might be something vhosted */
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if (!(r->parsed_uri.hostname
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&& !strcasecmp(r->parsed_uri.scheme, ap_http_scheme(r))
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&& ap_matches_request_vhost(r, r->parsed_uri.hostname,
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(apr_port_t)(r->parsed_uri.port_str ? r->parsed_uri.port
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: ap_default_port(r))))) {
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r->proxyreq = PROXYREQ_PROXY;
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r->uri = r->unparsed_uri;
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r->filename = apr_pstrcat(r->pool, "proxy:", r->uri, NULL);
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r->handler = "proxy-server";
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}
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}
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/* We need special treatment for CONNECT proxying: it has no scheme part */
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else if (conf->req && r->method_number == M_CONNECT
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&& r->parsed_uri.hostname
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&& r->parsed_uri.port_str) {
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r->proxyreq = PROXYREQ_PROXY;
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r->uri = r->unparsed_uri;
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r->filename = apr_pstrcat(r->pool, "proxy:", r->uri, NULL);
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r->handler = "proxy-server";
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}
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return DECLINED;
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}
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static int proxy_trans(request_rec *r)
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{
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void *sconf = r->server->module_config;
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proxy_server_conf *conf =
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(proxy_server_conf *) ap_get_module_config(sconf, &proxy_module);
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int i, len;
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struct proxy_alias *ent = (struct proxy_alias *) conf->aliases->elts;
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if (r->proxyreq) {
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/* someone has already set up the proxy, it was possibly ourselves
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* in proxy_detect
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*/
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return OK;
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}
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/* XXX: since r->uri has been manipulated already we're not really
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* compliant with RFC1945 at this point. But this probably isn't
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* an issue because this is a hybrid proxy/origin server.
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*/
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for (i = 0; i < conf->aliases->nelts; i++) {
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len = alias_match(r->uri, ent[i].fake);
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if (len > 0) {
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if ((ent[i].real[0] == '!') && (ent[i].real[1] == 0)) {
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return DECLINED;
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}
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r->filename = apr_pstrcat(r->pool, "proxy:", ent[i].real,
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r->uri + len, NULL);
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r->handler = "proxy-server";
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r->proxyreq = PROXYREQ_REVERSE;
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return OK;
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}
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}
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return DECLINED;
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}
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static int proxy_walk(request_rec *r)
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{
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proxy_server_conf *sconf = ap_get_module_config(r->server->module_config,
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&proxy_module);
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ap_conf_vector_t *per_dir_defaults = r->server->lookup_defaults;
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ap_conf_vector_t **sec_proxy = (ap_conf_vector_t **) sconf->sec_proxy->elts;
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ap_conf_vector_t *entry_config;
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proxy_dir_conf *entry_proxy;
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int num_sec = sconf->sec_proxy->nelts;
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/* XXX: shouldn't we use URI here? Canonicalize it first?
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* Pass over "proxy:" prefix
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*/
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const char *proxyname = r->filename + 6;
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int j;
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for (j = 0; j < num_sec; ++j)
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{
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entry_config = sec_proxy[j];
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entry_proxy = ap_get_module_config(entry_config, &proxy_module);
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/* XXX: What about case insensitive matching ???
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* Compare regex, fnmatch or string as appropriate
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* If the entry doesn't relate, then continue
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*/
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if (entry_proxy->r
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? ap_regexec(entry_proxy->r, proxyname, 0, NULL, 0)
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: (entry_proxy->p_is_fnmatch
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? apr_fnmatch(entry_proxy->p, proxyname, 0)
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: strncmp(proxyname, entry_proxy->p,
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strlen(entry_proxy->p)))) {
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continue;
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}
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per_dir_defaults = ap_merge_per_dir_configs(r->pool, per_dir_defaults,
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entry_config);
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}
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r->per_dir_config = per_dir_defaults;
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return OK;
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}
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static int proxy_map_location(request_rec *r)
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{
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int access_status;
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if (!r->proxyreq || !r->filename || strncmp(r->filename, "proxy:", 6) != 0)
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return DECLINED;
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/* Don't let the core or mod_http map_to_storage hooks handle this,
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* We don't need directory/file_walk, and we want to TRACE on our own.
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*/
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if ((access_status = proxy_walk(r))) {
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ap_die(access_status, r);
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return access_status;
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}
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return OK;
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}
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/* -------------------------------------------------------------- */
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/* Fixup the filename */
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/*
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* Canonicalise the URL
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*/
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static int proxy_fixup(request_rec *r)
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{
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char *url, *p;
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int access_status;
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if (!r->proxyreq || !r->filename || strncmp(r->filename, "proxy:", 6) != 0)
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return DECLINED;
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/* XXX: Shouldn't we try this before we run the proxy_walk? */
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url = &r->filename[6];
|
|
|
|
/* canonicalise each specific scheme */
|
|
if ((access_status = proxy_run_canon_handler(r, url))) {
|
|
return access_status;
|
|
}
|
|
|
|
p = strchr(url, ':');
|
|
if (p == NULL || p == url)
|
|
return HTTP_BAD_REQUEST;
|
|
|
|
return OK; /* otherwise; we've done the best we can */
|
|
}
|
|
/* Send a redirection if the request contains a hostname which is not */
|
|
/* fully qualified, i.e. doesn't have a domain name appended. Some proxy */
|
|
/* servers like Netscape's allow this and access hosts from the local */
|
|
/* domain in this case. I think it is better to redirect to a FQDN, since */
|
|
/* these will later be found in the bookmarks files. */
|
|
/* The "ProxyDomain" directive determines what domain will be appended */
|
|
static int proxy_needsdomain(request_rec *r, const char *url, const char *domain)
|
|
{
|
|
char *nuri;
|
|
const char *ref;
|
|
|
|
/* We only want to worry about GETs */
|
|
if (!r->proxyreq || r->method_number != M_GET || !r->parsed_uri.hostname)
|
|
return DECLINED;
|
|
|
|
/* If host does contain a dot already, or it is "localhost", decline */
|
|
if (strchr(r->parsed_uri.hostname, '.') != NULL
|
|
|| strcasecmp(r->parsed_uri.hostname, "localhost") == 0)
|
|
return DECLINED; /* host name has a dot already */
|
|
|
|
ref = apr_table_get(r->headers_in, "Referer");
|
|
|
|
/* Reassemble the request, but insert the domain after the host name */
|
|
/* Note that the domain name always starts with a dot */
|
|
r->parsed_uri.hostname = apr_pstrcat(r->pool, r->parsed_uri.hostname,
|
|
domain, NULL);
|
|
nuri = apr_uri_unparse(r->pool,
|
|
&r->parsed_uri,
|
|
APR_URI_UNP_REVEALPASSWORD);
|
|
|
|
apr_table_set(r->headers_out, "Location", nuri);
|
|
ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r,
|
|
"Domain missing: %s sent to %s%s%s", r->uri,
|
|
apr_uri_unparse(r->pool, &r->parsed_uri,
|
|
APR_URI_UNP_OMITUSERINFO),
|
|
ref ? " from " : "", ref ? ref : "");
|
|
|
|
return HTTP_MOVED_PERMANENTLY;
|
|
}
|
|
|
|
/* -------------------------------------------------------------- */
|
|
/* Invoke handler */
|
|
|
|
static int proxy_handler(request_rec *r)
|
|
{
|
|
char *uri, *scheme, *p;
|
|
const char *p2;
|
|
void *sconf = r->server->module_config;
|
|
proxy_server_conf *conf = (proxy_server_conf *)
|
|
ap_get_module_config(sconf, &proxy_module);
|
|
apr_array_header_t *proxies = conf->proxies;
|
|
struct proxy_remote *ents = (struct proxy_remote *) proxies->elts;
|
|
int i, rc, access_status;
|
|
int direct_connect = 0;
|
|
const char *str;
|
|
long maxfwd;
|
|
proxy_balancer *balancer = NULL;
|
|
proxy_worker *worker = NULL;
|
|
int attempts = 0, max_attempts = 0;
|
|
struct dirconn_entry *list = (struct dirconn_entry *)conf->dirconn->elts;
|
|
|
|
/* is this for us? */
|
|
if (!r->proxyreq || !r->filename || strncmp(r->filename, "proxy:", 6) != 0)
|
|
return DECLINED;
|
|
|
|
/* handle max-forwards / OPTIONS / TRACE */
|
|
if ((str = apr_table_get(r->headers_in, "Max-Forwards"))) {
|
|
maxfwd = strtol(str, NULL, 10);
|
|
if (maxfwd < 1) {
|
|
switch (r->method_number) {
|
|
case M_TRACE: {
|
|
int access_status;
|
|
r->proxyreq = PROXYREQ_NONE;
|
|
if ((access_status = ap_send_http_trace(r)))
|
|
ap_die(access_status, r);
|
|
else
|
|
ap_finalize_request_protocol(r);
|
|
return OK;
|
|
}
|
|
case M_OPTIONS: {
|
|
int access_status;
|
|
r->proxyreq = PROXYREQ_NONE;
|
|
if ((access_status = ap_send_http_options(r)))
|
|
ap_die(access_status, r);
|
|
else
|
|
ap_finalize_request_protocol(r);
|
|
return OK;
|
|
}
|
|
default: {
|
|
return ap_proxyerror(r, HTTP_BAD_GATEWAY,
|
|
"Max-Forwards has reached zero - proxy loop?");
|
|
}
|
|
}
|
|
}
|
|
maxfwd = (maxfwd > 0) ? maxfwd - 1 : 0;
|
|
}
|
|
else {
|
|
/* set configured max-forwards */
|
|
maxfwd = conf->maxfwd;
|
|
}
|
|
apr_table_set(r->headers_in, "Max-Forwards",
|
|
apr_psprintf(r->pool, "%ld", (maxfwd > 0) ? maxfwd : 0));
|
|
|
|
if (r->method_number == M_TRACE) {
|
|
core_server_config *coreconf = (core_server_config *)
|
|
ap_get_module_config(sconf, &core_module);
|
|
|
|
if (coreconf->trace_enable == AP_TRACE_DISABLE)
|
|
{
|
|
/* Allow "error-notes" string to be printed by ap_send_error_response()
|
|
* Note; this goes nowhere, canned error response need an overhaul.
|
|
*/
|
|
apr_table_setn(r->notes, "error-notes",
|
|
"TRACE forbidden by server configuration");
|
|
apr_table_setn(r->notes, "verbose-error-to", "*");
|
|
ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
|
|
"proxy: TRACE forbidden by server configuration");
|
|
return HTTP_FORBIDDEN;
|
|
}
|
|
|
|
/* Can't test ap_should_client_block, we aren't ready to send
|
|
* the client a 100 Continue response till the connection has
|
|
* been established
|
|
*/
|
|
if (coreconf->trace_enable != AP_TRACE_EXTENDED
|
|
&& (r->read_length || r->read_chunked || r->remaining))
|
|
{
|
|
/* Allow "error-notes" string to be printed by ap_send_error_response()
|
|
* Note; this goes nowhere, canned error response need an overhaul.
|
|
*/
|
|
apr_table_setn(r->notes, "error-notes",
|
|
"TRACE with request body is not allowed");
|
|
apr_table_setn(r->notes, "verbose-error-to", "*");
|
|
ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
|
|
"proxy: TRACE with request body is not allowed");
|
|
return HTTP_REQUEST_ENTITY_TOO_LARGE;
|
|
}
|
|
}
|
|
|
|
uri = r->filename + 6;
|
|
p = strchr(uri, ':');
|
|
if (p == NULL) {
|
|
ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
|
|
"proxy_handler no URL in %s", r->filename);
|
|
return HTTP_BAD_REQUEST;
|
|
}
|
|
|
|
/* If the host doesn't have a domain name, add one and redirect. */
|
|
if (conf->domain != NULL) {
|
|
rc = proxy_needsdomain(r, uri, conf->domain);
|
|
if (ap_is_HTTP_REDIRECT(rc))
|
|
return HTTP_MOVED_PERMANENTLY;
|
|
}
|
|
|
|
scheme = apr_pstrndup(r->pool, uri, p - uri);
|
|
/* Check URI's destination host against NoProxy hosts */
|
|
/* Bypass ProxyRemote server lookup if configured as NoProxy */
|
|
for (direct_connect = i = 0; i < conf->dirconn->nelts &&
|
|
!direct_connect; i++) {
|
|
direct_connect = list[i].matcher(&list[i], r);
|
|
}
|
|
#if DEBUGGING
|
|
ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
|
|
(direct_connect) ? "NoProxy for %s" : "UseProxy for %s",
|
|
r->uri);
|
|
#endif
|
|
|
|
do {
|
|
char *url = uri;
|
|
/* Try to obtain the most suitable worker */
|
|
access_status = ap_proxy_pre_request(&worker, &balancer, r, conf, &url);
|
|
if (access_status != OK) {
|
|
/*
|
|
* Only return if access_status is not HTTP_SERVICE_UNAVAILABLE
|
|
* This gives other modules the chance to hook into the
|
|
* request_status hook and decide what to do in this situation.
|
|
*/
|
|
if (access_status != HTTP_SERVICE_UNAVAILABLE)
|
|
return access_status;
|
|
/*
|
|
* Ensure that balancer is NULL if worker is NULL to prevent
|
|
* potential problems in the post_request hook.
|
|
*/
|
|
if (!worker)
|
|
balancer = NULL;
|
|
goto cleanup;
|
|
}
|
|
if (balancer && balancer->max_attempts_set && !max_attempts)
|
|
max_attempts = balancer->max_attempts;
|
|
/* firstly, try a proxy, unless a NoProxy directive is active */
|
|
if (!direct_connect) {
|
|
for (i = 0; i < proxies->nelts; i++) {
|
|
p2 = ap_strchr_c(ents[i].scheme, ':'); /* is it a partial URL? */
|
|
if (strcmp(ents[i].scheme, "*") == 0 ||
|
|
(ents[i].use_regex &&
|
|
ap_regexec(ents[i].regexp, url, 0, NULL, 0) == 0) ||
|
|
(p2 == NULL && strcasecmp(scheme, ents[i].scheme) == 0) ||
|
|
(p2 != NULL &&
|
|
strncasecmp(url, ents[i].scheme,
|
|
strlen(ents[i].scheme)) == 0)) {
|
|
|
|
/* handle the scheme */
|
|
ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, r->server,
|
|
"Trying to run scheme_handler against proxy");
|
|
access_status = proxy_run_scheme_handler(r, worker,
|
|
conf, url,
|
|
ents[i].hostname,
|
|
ents[i].port);
|
|
|
|
/* an error or success */
|
|
if (access_status != DECLINED &&
|
|
access_status != HTTP_BAD_GATEWAY) {
|
|
goto cleanup;
|
|
}
|
|
/* we failed to talk to the upstream proxy */
|
|
}
|
|
}
|
|
}
|
|
|
|
/* otherwise, try it direct */
|
|
/* N.B. what if we're behind a firewall, where we must use a proxy or
|
|
* give up??
|
|
*/
|
|
|
|
/* handle the scheme */
|
|
ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, r->server,
|
|
"Running scheme %s handler (attempt %d)",
|
|
scheme, attempts);
|
|
access_status = proxy_run_scheme_handler(r, worker, conf,
|
|
url, NULL, 0);
|
|
if (access_status == OK)
|
|
break;
|
|
else if (access_status == HTTP_INTERNAL_SERVER_ERROR) {
|
|
/* Unrecoverable server error.
|
|
* We can not failover to another worker.
|
|
* Mark the worker as unusable if member of load balancer
|
|
*/
|
|
if (balancer)
|
|
worker->s->status |= PROXY_WORKER_IN_ERROR;
|
|
break;
|
|
}
|
|
else if (access_status == HTTP_SERVICE_UNAVAILABLE) {
|
|
/* Recoverable server error.
|
|
* We can failover to another worker
|
|
* Mark the worker as unusable if member of load balancer
|
|
*/
|
|
if (balancer) {
|
|
worker->s->status |= PROXY_WORKER_IN_ERROR;
|
|
}
|
|
}
|
|
else {
|
|
/* Unrecoverable error.
|
|
* Return the origin status code to the client.
|
|
*/
|
|
break;
|
|
}
|
|
/* Try again if the worker is unusable and the service is
|
|
* unavailable.
|
|
*/
|
|
} while (!PROXY_WORKER_IS_USABLE(worker) &&
|
|
max_attempts > attempts++);
|
|
|
|
if (DECLINED == access_status) {
|
|
ap_log_error(APLOG_MARK, APLOG_WARNING, 0, r->server,
|
|
"proxy: No protocol handler was valid for the URL %s. "
|
|
"If you are using a DSO version of mod_proxy, make sure "
|
|
"the proxy submodules are included in the configuration "
|
|
"using LoadModule.", r->uri);
|
|
access_status = HTTP_FORBIDDEN;
|
|
goto cleanup;
|
|
}
|
|
cleanup:
|
|
if (balancer) {
|
|
int post_status = proxy_run_post_request(worker, balancer, r, conf);
|
|
if (post_status == DECLINED) {
|
|
post_status = OK; /* no post_request handler available */
|
|
/* TODO: recycle direct worker */
|
|
}
|
|
}
|
|
|
|
proxy_run_request_status(&access_status, r);
|
|
|
|
return access_status;
|
|
}
|
|
|
|
/* -------------------------------------------------------------- */
|
|
/* Setup configurable data */
|
|
|
|
static void * create_proxy_config(apr_pool_t *p, server_rec *s)
|
|
{
|
|
proxy_server_conf *ps = apr_pcalloc(p, sizeof(proxy_server_conf));
|
|
|
|
ps->sec_proxy = apr_array_make(p, 10, sizeof(ap_conf_vector_t *));
|
|
ps->proxies = apr_array_make(p, 10, sizeof(struct proxy_remote));
|
|
ps->aliases = apr_array_make(p, 10, sizeof(struct proxy_alias));
|
|
ps->noproxies = apr_array_make(p, 10, sizeof(struct noproxy_entry));
|
|
ps->dirconn = apr_array_make(p, 10, sizeof(struct dirconn_entry));
|
|
ps->allowed_connect_ports = apr_array_make(p, 10, sizeof(int));
|
|
ps->workers = apr_array_make(p, 10, sizeof(proxy_worker));
|
|
ps->balancers = apr_array_make(p, 10, sizeof(proxy_balancer));
|
|
ps->forward = NULL;
|
|
ps->reverse = NULL;
|
|
ps->domain = NULL;
|
|
ps->viaopt = via_off; /* initially backward compatible with 1.3.1 */
|
|
ps->viaopt_set = 0; /* 0 means default */
|
|
ps->req = 0;
|
|
ps->req_set = 0;
|
|
ps->recv_buffer_size = 0; /* this default was left unset for some reason */
|
|
ps->recv_buffer_size_set = 0;
|
|
ps->io_buffer_size = AP_IOBUFSIZE;
|
|
ps->io_buffer_size_set = 0;
|
|
ps->maxfwd = DEFAULT_MAX_FORWARDS;
|
|
ps->maxfwd_set = 0;
|
|
ps->error_override = 0;
|
|
ps->error_override_set = 0;
|
|
ps->preserve_host_set = 0;
|
|
ps->preserve_host = 0;
|
|
ps->timeout = 0;
|
|
ps->timeout_set = 0;
|
|
ps->badopt = bad_error;
|
|
ps->badopt_set = 0;
|
|
ps->pool = p;
|
|
|
|
return ps;
|
|
}
|
|
|
|
static void * merge_proxy_config(apr_pool_t *p, void *basev, void *overridesv)
|
|
{
|
|
proxy_server_conf *ps = apr_pcalloc(p, sizeof(proxy_server_conf));
|
|
proxy_server_conf *base = (proxy_server_conf *) basev;
|
|
proxy_server_conf *overrides = (proxy_server_conf *) overridesv;
|
|
|
|
ps->proxies = apr_array_append(p, base->proxies, overrides->proxies);
|
|
ps->sec_proxy = apr_array_append(p, base->sec_proxy, overrides->sec_proxy);
|
|
ps->aliases = apr_array_append(p, base->aliases, overrides->aliases);
|
|
ps->noproxies = apr_array_append(p, base->noproxies, overrides->noproxies);
|
|
ps->dirconn = apr_array_append(p, base->dirconn, overrides->dirconn);
|
|
ps->allowed_connect_ports = apr_array_append(p, base->allowed_connect_ports, overrides->allowed_connect_ports);
|
|
ps->workers = apr_array_append(p, base->workers, overrides->workers);
|
|
ps->balancers = apr_array_append(p, base->balancers, overrides->balancers);
|
|
ps->forward = overrides->forward ? overrides->forward : base->forward;
|
|
ps->reverse = overrides->reverse ? overrides->reverse : base->reverse;
|
|
|
|
ps->domain = (overrides->domain == NULL) ? base->domain : overrides->domain;
|
|
ps->viaopt = (overrides->viaopt_set == 0) ? base->viaopt : overrides->viaopt;
|
|
ps->req = (overrides->req_set == 0) ? base->req : overrides->req;
|
|
ps->recv_buffer_size = (overrides->recv_buffer_size_set == 0) ? base->recv_buffer_size : overrides->recv_buffer_size;
|
|
ps->io_buffer_size = (overrides->io_buffer_size_set == 0) ? base->io_buffer_size : overrides->io_buffer_size;
|
|
ps->maxfwd = (overrides->maxfwd_set == 0) ? base->maxfwd : overrides->maxfwd;
|
|
ps->error_override = (overrides->error_override_set == 0) ? base->error_override : overrides->error_override;
|
|
ps->preserve_host = (overrides->preserve_host_set == 0) ? base->preserve_host : overrides->preserve_host;
|
|
ps->timeout= (overrides->timeout_set == 0) ? base->timeout : overrides->timeout;
|
|
ps->badopt = (overrides->badopt_set == 0) ? base->badopt : overrides->badopt;
|
|
ps->proxy_status = (overrides->proxy_status_set == 0) ? base->proxy_status : overrides->proxy_status;
|
|
ps->pool = p;
|
|
return ps;
|
|
}
|
|
|
|
static void *create_proxy_dir_config(apr_pool_t *p, char *dummy)
|
|
{
|
|
proxy_dir_conf *new =
|
|
(proxy_dir_conf *) apr_pcalloc(p, sizeof(proxy_dir_conf));
|
|
|
|
/* Filled in by proxysection, when applicable */
|
|
|
|
/* Put these in the dir config so they work inside <Location> */
|
|
new->raliases = apr_array_make(p, 10, sizeof(struct proxy_alias));
|
|
new->cookie_paths = apr_array_make(p, 10, sizeof(struct proxy_alias));
|
|
new->cookie_domains = apr_array_make(p, 10, sizeof(struct proxy_alias));
|
|
new->cookie_path_str = apr_strmatch_precompile(p, "path=", 0);
|
|
new->cookie_domain_str = apr_strmatch_precompile(p, "domain=", 0);
|
|
|
|
return (void *) new;
|
|
}
|
|
|
|
static void *merge_proxy_dir_config(apr_pool_t *p, void *basev, void *addv)
|
|
{
|
|
proxy_dir_conf *new = (proxy_dir_conf *) apr_pcalloc(p, sizeof(proxy_dir_conf));
|
|
proxy_dir_conf *add = (proxy_dir_conf *) addv;
|
|
proxy_dir_conf *base = (proxy_dir_conf *) basev;
|
|
|
|
new->p = add->p;
|
|
new->p_is_fnmatch = add->p_is_fnmatch;
|
|
new->r = add->r;
|
|
|
|
/* Put these in the dir config so they work inside <Location> */
|
|
new->raliases = apr_array_append(p, base->raliases, add->raliases);
|
|
new->cookie_paths
|
|
= apr_array_append(p, base->cookie_paths, add->cookie_paths);
|
|
new->cookie_domains
|
|
= apr_array_append(p, base->cookie_domains, add->cookie_domains);
|
|
new->cookie_path_str = base->cookie_path_str;
|
|
new->cookie_domain_str = base->cookie_domain_str;
|
|
return new;
|
|
}
|
|
|
|
|
|
static const char *
|
|
add_proxy(cmd_parms *cmd, void *dummy, const char *f1, const char *r1, int regex)
|
|
{
|
|
server_rec *s = cmd->server;
|
|
proxy_server_conf *conf =
|
|
(proxy_server_conf *) ap_get_module_config(s->module_config, &proxy_module);
|
|
struct proxy_remote *new;
|
|
char *p, *q;
|
|
char *r, *f, *scheme;
|
|
ap_regex_t *reg = NULL;
|
|
int port;
|
|
|
|
r = apr_pstrdup(cmd->pool, r1);
|
|
scheme = apr_pstrdup(cmd->pool, r1);
|
|
f = apr_pstrdup(cmd->pool, f1);
|
|
p = strchr(r, ':');
|
|
if (p == NULL || p[1] != '/' || p[2] != '/' || p[3] == '\0') {
|
|
if (regex)
|
|
return "ProxyRemoteMatch: Bad syntax for a remote proxy server";
|
|
else
|
|
return "ProxyRemote: Bad syntax for a remote proxy server";
|
|
}
|
|
else {
|
|
scheme[p-r] = 0;
|
|
}
|
|
q = strchr(p + 3, ':');
|
|
if (q != NULL) {
|
|
if (sscanf(q + 1, "%u", &port) != 1 || port > 65535) {
|
|
if (regex)
|
|
return "ProxyRemoteMatch: Bad syntax for a remote proxy server (bad port number)";
|
|
else
|
|
return "ProxyRemote: Bad syntax for a remote proxy server (bad port number)";
|
|
}
|
|
*q = '\0';
|
|
}
|
|
else
|
|
port = -1;
|
|
*p = '\0';
|
|
if (regex) {
|
|
reg = ap_pregcomp(cmd->pool, f, AP_REG_EXTENDED);
|
|
if (!reg)
|
|
return "Regular expression for ProxyRemoteMatch could not be compiled.";
|
|
}
|
|
else
|
|
if (strchr(f, ':') == NULL)
|
|
ap_str_tolower(f); /* lowercase scheme */
|
|
ap_str_tolower(p + 3); /* lowercase hostname */
|
|
|
|
if (port == -1) {
|
|
port = apr_uri_port_of_scheme(scheme);
|
|
}
|
|
|
|
new = apr_array_push(conf->proxies);
|
|
new->scheme = f;
|
|
new->protocol = r;
|
|
new->hostname = p + 3;
|
|
new->port = port;
|
|
new->regexp = reg;
|
|
new->use_regex = regex;
|
|
return NULL;
|
|
}
|
|
|
|
static const char *
|
|
add_proxy_noregex(cmd_parms *cmd, void *dummy, const char *f1, const char *r1)
|
|
{
|
|
return add_proxy(cmd, dummy, f1, r1, 0);
|
|
}
|
|
|
|
static const char *
|
|
add_proxy_regex(cmd_parms *cmd, void *dummy, const char *f1, const char *r1)
|
|
{
|
|
return add_proxy(cmd, dummy, f1, r1, 1);
|
|
}
|
|
|
|
static const char *
|
|
add_pass(cmd_parms *cmd, void *dummy, const char *arg)
|
|
{
|
|
server_rec *s = cmd->server;
|
|
proxy_server_conf *conf =
|
|
(proxy_server_conf *) ap_get_module_config(s->module_config, &proxy_module);
|
|
struct proxy_alias *new;
|
|
char *f = cmd->path;
|
|
char *r = NULL;
|
|
char *word;
|
|
apr_table_t *params = apr_table_make(cmd->pool, 5);
|
|
const apr_array_header_t *arr;
|
|
const apr_table_entry_t *elts;
|
|
int i;
|
|
|
|
while (*arg) {
|
|
word = ap_getword_conf(cmd->pool, &arg);
|
|
if (!f)
|
|
f = word;
|
|
else if (!r)
|
|
r = word;
|
|
else {
|
|
char *val = strchr(word, '=');
|
|
if (!val) {
|
|
if (cmd->path)
|
|
return "Invalid ProxyPass parameter. Parameter must be "
|
|
"in the form 'key=value'";
|
|
else
|
|
return "ProxyPass can not have a path when defined in a location";
|
|
}
|
|
else
|
|
*val++ = '\0';
|
|
apr_table_setn(params, word, val);
|
|
}
|
|
};
|
|
|
|
if (r == NULL)
|
|
return "ProxyPass needs a path when not defined in a location";
|
|
|
|
new = apr_array_push(conf->aliases);
|
|
new->fake = apr_pstrdup(cmd->pool, f);
|
|
new->real = apr_pstrdup(cmd->pool, r);
|
|
if (r[0] == '!' && r[1] == '\0')
|
|
return NULL;
|
|
|
|
arr = apr_table_elts(params);
|
|
elts = (const apr_table_entry_t *)arr->elts;
|
|
/* Distinguish the balancer from woker */
|
|
if (strncasecmp(r, "balancer:", 9) == 0) {
|
|
proxy_balancer *balancer = ap_proxy_get_balancer(cmd->pool, conf, r);
|
|
if (!balancer) {
|
|
const char *err = ap_proxy_add_balancer(&balancer,
|
|
cmd->pool,
|
|
conf, r);
|
|
if (err)
|
|
return apr_pstrcat(cmd->temp_pool, "ProxyPass ", err, NULL);
|
|
}
|
|
for (i = 0; i < arr->nelts; i++) {
|
|
const char *err = set_balancer_param(conf, cmd->pool, balancer, elts[i].key,
|
|
elts[i].val);
|
|
if (err)
|
|
return apr_pstrcat(cmd->temp_pool, "ProxyPass ", err, NULL);
|
|
}
|
|
}
|
|
else {
|
|
proxy_worker *worker = ap_proxy_get_worker(cmd->temp_pool, conf, r);
|
|
if (!worker) {
|
|
const char *err = ap_proxy_add_worker(&worker, cmd->pool, conf, r);
|
|
if (err)
|
|
return apr_pstrcat(cmd->temp_pool, "ProxyPass ", err, NULL);
|
|
}
|
|
PROXY_COPY_CONF_PARAMS(worker, conf);
|
|
|
|
for (i = 0; i < arr->nelts; i++) {
|
|
const char *err = set_worker_param(cmd->pool, worker, elts[i].key,
|
|
elts[i].val);
|
|
if (err)
|
|
return apr_pstrcat(cmd->temp_pool, "ProxyPass ", err, NULL);
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static const char *
|
|
add_pass_reverse(cmd_parms *cmd, void *dconf, const char *f, const char *r)
|
|
{
|
|
proxy_dir_conf *conf = dconf;
|
|
struct proxy_alias *new;
|
|
|
|
if (r!=NULL && cmd->path == NULL ) {
|
|
new = apr_array_push(conf->raliases);
|
|
new->fake = f;
|
|
new->real = r;
|
|
} else if (r==NULL && cmd->path != NULL) {
|
|
new = apr_array_push(conf->raliases);
|
|
new->fake = cmd->path;
|
|
new->real = f;
|
|
} else {
|
|
if ( r == NULL)
|
|
return "ProxyPassReverse needs a path when not defined in a location";
|
|
else
|
|
return "ProxyPassReverse can not have a path when defined in a location";
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
static const char*
|
|
cookie_path(cmd_parms *cmd, void *dconf, const char *f, const char *r)
|
|
{
|
|
proxy_dir_conf *conf = dconf;
|
|
struct proxy_alias *new;
|
|
|
|
new = apr_array_push(conf->cookie_paths);
|
|
new->fake = f;
|
|
new->real = r;
|
|
|
|
return NULL;
|
|
}
|
|
static const char*
|
|
cookie_domain(cmd_parms *cmd, void *dconf, const char *f, const char *r)
|
|
{
|
|
proxy_dir_conf *conf = dconf;
|
|
struct proxy_alias *new;
|
|
|
|
new = apr_array_push(conf->cookie_domains);
|
|
new->fake = f;
|
|
new->real = r;
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static const char *
|
|
set_proxy_exclude(cmd_parms *parms, void *dummy, const char *arg)
|
|
{
|
|
server_rec *s = parms->server;
|
|
proxy_server_conf *conf =
|
|
ap_get_module_config(s->module_config, &proxy_module);
|
|
struct noproxy_entry *new;
|
|
struct noproxy_entry *list = (struct noproxy_entry *) conf->noproxies->elts;
|
|
struct apr_sockaddr_t *addr;
|
|
int found = 0;
|
|
int i;
|
|
|
|
/* Don't duplicate entries */
|
|
for (i = 0; i < conf->noproxies->nelts; i++) {
|
|
if (strcasecmp(arg, list[i].name) == 0) { /* ignore case for host names */
|
|
found = 1;
|
|
}
|
|
}
|
|
|
|
if (!found) {
|
|
new = apr_array_push(conf->noproxies);
|
|
new->name = arg;
|
|
if (APR_SUCCESS == apr_sockaddr_info_get(&addr, new->name, APR_UNSPEC, 0, 0, parms->pool)) {
|
|
new->addr = addr;
|
|
}
|
|
else {
|
|
new->addr = NULL;
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/*
|
|
* Set the ports CONNECT can use
|
|
*/
|
|
static const char *
|
|
set_allowed_ports(cmd_parms *parms, void *dummy, const char *arg)
|
|
{
|
|
server_rec *s = parms->server;
|
|
proxy_server_conf *conf =
|
|
ap_get_module_config(s->module_config, &proxy_module);
|
|
int *New;
|
|
|
|
if (!apr_isdigit(arg[0]))
|
|
return "AllowCONNECT: port number must be numeric";
|
|
|
|
New = apr_array_push(conf->allowed_connect_ports);
|
|
*New = atoi(arg);
|
|
return NULL;
|
|
}
|
|
|
|
/* Similar to set_proxy_exclude(), but defining directly connected hosts,
|
|
* which should never be accessed via the configured ProxyRemote servers
|
|
*/
|
|
static const char *
|
|
set_proxy_dirconn(cmd_parms *parms, void *dummy, const char *arg)
|
|
{
|
|
server_rec *s = parms->server;
|
|
proxy_server_conf *conf =
|
|
ap_get_module_config(s->module_config, &proxy_module);
|
|
struct dirconn_entry *New;
|
|
struct dirconn_entry *list = (struct dirconn_entry *) conf->dirconn->elts;
|
|
int found = 0;
|
|
int i;
|
|
|
|
/* Don't duplicate entries */
|
|
for (i = 0; i < conf->dirconn->nelts; i++) {
|
|
if (strcasecmp(arg, list[i].name) == 0)
|
|
found = 1;
|
|
}
|
|
|
|
if (!found) {
|
|
New = apr_array_push(conf->dirconn);
|
|
New->name = apr_pstrdup(parms->pool, arg);
|
|
New->hostaddr = NULL;
|
|
|
|
if (ap_proxy_is_ipaddr(New, parms->pool)) {
|
|
#if DEBUGGING
|
|
ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
|
|
"Parsed addr %s", inet_ntoa(New->addr));
|
|
ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
|
|
"Parsed mask %s", inet_ntoa(New->mask));
|
|
#endif
|
|
}
|
|
else if (ap_proxy_is_domainname(New, parms->pool)) {
|
|
ap_str_tolower(New->name);
|
|
#if DEBUGGING
|
|
ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
|
|
"Parsed domain %s", New->name);
|
|
#endif
|
|
}
|
|
else if (ap_proxy_is_hostname(New, parms->pool)) {
|
|
ap_str_tolower(New->name);
|
|
#if DEBUGGING
|
|
ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
|
|
"Parsed host %s", New->name);
|
|
#endif
|
|
}
|
|
else {
|
|
ap_proxy_is_word(New, parms->pool);
|
|
#if DEBUGGING
|
|
fprintf(stderr, "Parsed word %s\n", New->name);
|
|
#endif
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static const char *
|
|
set_proxy_domain(cmd_parms *parms, void *dummy, const char *arg)
|
|
{
|
|
proxy_server_conf *psf =
|
|
ap_get_module_config(parms->server->module_config, &proxy_module);
|
|
|
|
if (arg[0] != '.')
|
|
return "ProxyDomain: domain name must start with a dot.";
|
|
|
|
psf->domain = arg;
|
|
return NULL;
|
|
}
|
|
|
|
static const char *
|
|
set_proxy_req(cmd_parms *parms, void *dummy, int flag)
|
|
{
|
|
proxy_server_conf *psf =
|
|
ap_get_module_config(parms->server->module_config, &proxy_module);
|
|
|
|
psf->req = flag;
|
|
psf->req_set = 1;
|
|
|
|
if (flag && !psf->forward) {
|
|
psf->forward = ap_proxy_create_worker(parms->pool);
|
|
psf->forward->name = "proxy:forward";
|
|
psf->forward->hostname = "*";
|
|
psf->forward->scheme = "*";
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static const char *
|
|
set_proxy_error_override(cmd_parms *parms, void *dummy, int flag)
|
|
{
|
|
proxy_server_conf *psf =
|
|
ap_get_module_config(parms->server->module_config, &proxy_module);
|
|
|
|
psf->error_override = flag;
|
|
psf->error_override_set = 1;
|
|
return NULL;
|
|
}
|
|
static const char *
|
|
set_preserve_host(cmd_parms *parms, void *dummy, int flag)
|
|
{
|
|
proxy_server_conf *psf =
|
|
ap_get_module_config(parms->server->module_config, &proxy_module);
|
|
|
|
psf->preserve_host = flag;
|
|
psf->preserve_host_set = 1;
|
|
return NULL;
|
|
}
|
|
|
|
static const char *
|
|
set_recv_buffer_size(cmd_parms *parms, void *dummy, const char *arg)
|
|
{
|
|
proxy_server_conf *psf =
|
|
ap_get_module_config(parms->server->module_config, &proxy_module);
|
|
int s = atoi(arg);
|
|
if (s < 512 && s != 0) {
|
|
return "ProxyReceiveBufferSize must be >= 512 bytes, or 0 for system default.";
|
|
}
|
|
|
|
psf->recv_buffer_size = s;
|
|
psf->recv_buffer_size_set = 1;
|
|
return NULL;
|
|
}
|
|
|
|
static const char *
|
|
set_io_buffer_size(cmd_parms *parms, void *dummy, const char *arg)
|
|
{
|
|
proxy_server_conf *psf =
|
|
ap_get_module_config(parms->server->module_config, &proxy_module);
|
|
long s = atol(arg);
|
|
|
|
psf->io_buffer_size = ((s > AP_IOBUFSIZE) ? s : AP_IOBUFSIZE);
|
|
psf->io_buffer_size_set = 1;
|
|
return NULL;
|
|
}
|
|
|
|
static const char *
|
|
set_max_forwards(cmd_parms *parms, void *dummy, const char *arg)
|
|
{
|
|
proxy_server_conf *psf =
|
|
ap_get_module_config(parms->server->module_config, &proxy_module);
|
|
long s = atol(arg);
|
|
if (s < 0) {
|
|
return "ProxyMaxForwards must be greater or equal to zero..";
|
|
}
|
|
|
|
psf->maxfwd = s;
|
|
psf->maxfwd_set = 1;
|
|
return NULL;
|
|
}
|
|
static const char*
|
|
set_proxy_timeout(cmd_parms *parms, void *dummy, const char *arg)
|
|
{
|
|
proxy_server_conf *psf =
|
|
ap_get_module_config(parms->server->module_config, &proxy_module);
|
|
int timeout;
|
|
|
|
timeout=atoi(arg);
|
|
if (timeout<1) {
|
|
return "Proxy Timeout must be at least 1 second.";
|
|
}
|
|
psf->timeout_set=1;
|
|
psf->timeout=apr_time_from_sec(timeout);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static const char*
|
|
set_via_opt(cmd_parms *parms, void *dummy, const char *arg)
|
|
{
|
|
proxy_server_conf *psf =
|
|
ap_get_module_config(parms->server->module_config, &proxy_module);
|
|
|
|
if (strcasecmp(arg, "Off") == 0)
|
|
psf->viaopt = via_off;
|
|
else if (strcasecmp(arg, "On") == 0)
|
|
psf->viaopt = via_on;
|
|
else if (strcasecmp(arg, "Block") == 0)
|
|
psf->viaopt = via_block;
|
|
else if (strcasecmp(arg, "Full") == 0)
|
|
psf->viaopt = via_full;
|
|
else {
|
|
return "ProxyVia must be one of: "
|
|
"off | on | full | block";
|
|
}
|
|
|
|
psf->viaopt_set = 1;
|
|
return NULL;
|
|
}
|
|
|
|
static const char*
|
|
set_bad_opt(cmd_parms *parms, void *dummy, const char *arg)
|
|
{
|
|
proxy_server_conf *psf =
|
|
ap_get_module_config(parms->server->module_config, &proxy_module);
|
|
|
|
if (strcasecmp(arg, "IsError") == 0)
|
|
psf->badopt = bad_error;
|
|
else if (strcasecmp(arg, "Ignore") == 0)
|
|
psf->badopt = bad_ignore;
|
|
else if (strcasecmp(arg, "StartBody") == 0)
|
|
psf->badopt = bad_body;
|
|
else {
|
|
return "ProxyBadHeader must be one of: "
|
|
"IsError | Ignore | StartBody";
|
|
}
|
|
|
|
psf->badopt_set = 1;
|
|
return NULL;
|
|
}
|
|
|
|
static const char*
|
|
set_status_opt(cmd_parms *parms, void *dummy, const char *arg)
|
|
{
|
|
proxy_server_conf *psf =
|
|
ap_get_module_config(parms->server->module_config, &proxy_module);
|
|
|
|
if (strcasecmp(arg, "Off") == 0)
|
|
psf->proxy_status = status_off;
|
|
else if (strcasecmp(arg, "On") == 0)
|
|
psf->proxy_status = status_on;
|
|
else if (strcasecmp(arg, "Full") == 0)
|
|
psf->proxy_status = status_full;
|
|
else {
|
|
return "ProxyStatus must be one of: "
|
|
"off | on | block";
|
|
}
|
|
|
|
psf->proxy_status_set = 1;
|
|
return NULL;
|
|
}
|
|
|
|
static const char *add_member(cmd_parms *cmd, void *dummy, const char *arg)
|
|
{
|
|
server_rec *s = cmd->server;
|
|
proxy_server_conf *conf =
|
|
ap_get_module_config(s->module_config, &proxy_module);
|
|
proxy_balancer *balancer;
|
|
proxy_worker *worker;
|
|
char *path = cmd->path;
|
|
char *name = NULL;
|
|
char *word;
|
|
apr_table_t *params = apr_table_make(cmd->pool, 5);
|
|
const apr_array_header_t *arr;
|
|
const apr_table_entry_t *elts;
|
|
int i;
|
|
|
|
if (cmd->path)
|
|
path = apr_pstrdup(cmd->pool, cmd->path);
|
|
while (*arg) {
|
|
word = ap_getword_conf(cmd->pool, &arg);
|
|
if (!path)
|
|
path = word;
|
|
else if (!name)
|
|
name = word;
|
|
else {
|
|
char *val = strchr(word, '=');
|
|
if (!val)
|
|
if (cmd->path)
|
|
return "BalancerMember can not have a balancer name when defined in a location";
|
|
else
|
|
return "Invalid BalancerMember parameter. Parameter must "
|
|
"be in the form 'key=value'";
|
|
else
|
|
*val++ = '\0';
|
|
apr_table_setn(params, word, val);
|
|
}
|
|
}
|
|
if (!path)
|
|
return "BalancerMember must define balancer name when outside <Proxy > section";
|
|
if (!name)
|
|
return "BalancerMember must define remote proxy server";
|
|
|
|
ap_str_tolower(path); /* lowercase scheme://hostname */
|
|
|
|
/* Try to find existing worker */
|
|
worker = ap_proxy_get_worker(cmd->temp_pool, conf, name);
|
|
if (!worker) {
|
|
const char *err;
|
|
if ((err = ap_proxy_add_worker(&worker, cmd->pool, conf, name)) != NULL)
|
|
return apr_pstrcat(cmd->temp_pool, "BalancerMember ", err, NULL);
|
|
}
|
|
PROXY_COPY_CONF_PARAMS(worker, conf);
|
|
|
|
arr = apr_table_elts(params);
|
|
elts = (const apr_table_entry_t *)arr->elts;
|
|
for (i = 0; i < arr->nelts; i++) {
|
|
const char *err = set_worker_param(cmd->pool, worker, elts[i].key,
|
|
elts[i].val);
|
|
if (err)
|
|
return apr_pstrcat(cmd->temp_pool, "BalancerMember ", err, NULL);
|
|
}
|
|
/* Try to find the balancer */
|
|
balancer = ap_proxy_get_balancer(cmd->temp_pool, conf, path);
|
|
if (!balancer) {
|
|
const char *err = ap_proxy_add_balancer(&balancer,
|
|
cmd->pool,
|
|
conf, path);
|
|
if (err)
|
|
return apr_pstrcat(cmd->temp_pool, "BalancerMember ", err, NULL);
|
|
}
|
|
/* Add the worker to the load balancer */
|
|
ap_proxy_add_worker_to_balancer(cmd->pool, balancer, worker);
|
|
return NULL;
|
|
}
|
|
|
|
static const char *
|
|
set_proxy_param(cmd_parms *cmd, void *dummy, const char *arg)
|
|
{
|
|
server_rec *s = cmd->server;
|
|
proxy_server_conf *conf =
|
|
(proxy_server_conf *) ap_get_module_config(s->module_config, &proxy_module);
|
|
char *name = NULL;
|
|
char *word, *val;
|
|
proxy_balancer *balancer = NULL;
|
|
proxy_worker *worker = NULL;
|
|
const char *err;
|
|
|
|
if (cmd->directive->parent &&
|
|
strncasecmp(cmd->directive->parent->directive,
|
|
"<Proxy", 6) == 0) {
|
|
const char *pargs = cmd->directive->parent->args;
|
|
/* Directive inside <Proxy section
|
|
* Parent directive arg is the worker/balancer name.
|
|
*/
|
|
name = ap_getword_conf(cmd->temp_pool, &pargs);
|
|
if ((word = ap_strchr(name, '>')))
|
|
*word = '\0';
|
|
}
|
|
else {
|
|
/* Standard set directive with worker/balancer
|
|
* name as first param.
|
|
*/
|
|
name = ap_getword_conf(cmd->temp_pool, &arg);
|
|
}
|
|
|
|
if (strncasecmp(name, "balancer:", 9) == 0) {
|
|
balancer = ap_proxy_get_balancer(cmd->pool, conf, name);
|
|
if (!balancer) {
|
|
return apr_pstrcat(cmd->temp_pool, "ProxySet can not find '",
|
|
name, "' Balancer.", NULL);
|
|
}
|
|
}
|
|
else {
|
|
worker = ap_proxy_get_worker(cmd->temp_pool, conf, name);
|
|
if (!worker) {
|
|
return apr_pstrcat(cmd->temp_pool, "ProxySet can not find '",
|
|
name, "' Worker.", NULL);
|
|
}
|
|
}
|
|
|
|
while (*arg) {
|
|
word = ap_getword_conf(cmd->pool, &arg);
|
|
val = strchr(word, '=');
|
|
if (!val) {
|
|
return "Invalid ProxySet parameter. Parameter must be "
|
|
"in the form 'key=value'";
|
|
}
|
|
else
|
|
*val++ = '\0';
|
|
if (worker)
|
|
err = set_worker_param(cmd->pool, worker, word, val);
|
|
else
|
|
err = set_balancer_param(conf, cmd->pool, balancer, word, val);
|
|
|
|
if (err)
|
|
return apr_pstrcat(cmd->temp_pool, "ProxySet: ", err, " ", word, "=", val, "; ", name, NULL);
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static void ap_add_per_proxy_conf(server_rec *s, ap_conf_vector_t *dir_config)
|
|
{
|
|
proxy_server_conf *sconf = ap_get_module_config(s->module_config,
|
|
&proxy_module);
|
|
void **new_space = (void **)apr_array_push(sconf->sec_proxy);
|
|
|
|
*new_space = dir_config;
|
|
}
|
|
|
|
static const char *proxysection(cmd_parms *cmd, void *mconfig, const char *arg)
|
|
{
|
|
const char *errmsg;
|
|
const char *endp = ap_strrchr_c(arg, '>');
|
|
int old_overrides = cmd->override;
|
|
char *old_path = cmd->path;
|
|
proxy_dir_conf *conf;
|
|
ap_conf_vector_t *new_dir_conf = ap_create_per_dir_config(cmd->pool);
|
|
ap_regex_t *r = NULL;
|
|
const command_rec *thiscmd = cmd->cmd;
|
|
|
|
const char *err = ap_check_cmd_context(cmd,
|
|
NOT_IN_DIR_LOC_FILE|NOT_IN_LIMIT);
|
|
if (err != NULL) {
|
|
return err;
|
|
}
|
|
|
|
if (endp == NULL) {
|
|
return apr_pstrcat(cmd->pool, cmd->cmd->name,
|
|
"> directive missing closing '>'", NULL);
|
|
}
|
|
|
|
arg=apr_pstrndup(cmd->pool, arg, endp-arg);
|
|
|
|
if (!arg) {
|
|
if (thiscmd->cmd_data)
|
|
return "<ProxyMatch > block must specify a path";
|
|
else
|
|
return "<Proxy > block must specify a path";
|
|
}
|
|
|
|
cmd->path = ap_getword_conf(cmd->pool, &arg);
|
|
cmd->override = OR_ALL|ACCESS_CONF;
|
|
|
|
if (!strncasecmp(cmd->path, "proxy:", 6))
|
|
cmd->path += 6;
|
|
|
|
/* XXX Ignore case? What if we proxy a case-insensitive server?!?
|
|
* While we are at it, shouldn't we also canonicalize the entire
|
|
* scheme? See proxy_fixup()
|
|
*/
|
|
if (thiscmd->cmd_data) { /* <ProxyMatch> */
|
|
r = ap_pregcomp(cmd->pool, cmd->path, AP_REG_EXTENDED);
|
|
if (!r) {
|
|
return "Regex could not be compiled";
|
|
}
|
|
}
|
|
else if (!strcmp(cmd->path, "~")) {
|
|
cmd->path = ap_getword_conf(cmd->pool, &arg);
|
|
if (!cmd->path)
|
|
return "<Proxy ~ > block must specify a path";
|
|
if (strncasecmp(cmd->path, "proxy:", 6))
|
|
cmd->path += 6;
|
|
r = ap_pregcomp(cmd->pool, cmd->path, AP_REG_EXTENDED);
|
|
if (!r) {
|
|
return "Regex could not be compiled";
|
|
}
|
|
}
|
|
|
|
/* initialize our config and fetch it */
|
|
conf = ap_set_config_vectors(cmd->server, new_dir_conf, cmd->path,
|
|
&proxy_module, cmd->pool);
|
|
|
|
errmsg = ap_walk_config(cmd->directive->first_child, cmd, new_dir_conf);
|
|
if (errmsg != NULL)
|
|
return errmsg;
|
|
|
|
conf->r = r;
|
|
conf->p = cmd->path;
|
|
conf->p_is_fnmatch = apr_fnmatch_test(conf->p);
|
|
|
|
ap_add_per_proxy_conf(cmd->server, new_dir_conf);
|
|
|
|
if (*arg != '\0') {
|
|
return apr_pstrcat(cmd->pool, "Multiple ", thiscmd->name,
|
|
"> arguments not (yet) supported.", NULL);
|
|
}
|
|
|
|
cmd->path = old_path;
|
|
cmd->override = old_overrides;
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static const command_rec proxy_cmds[] =
|
|
{
|
|
AP_INIT_RAW_ARGS("<Proxy", proxysection, NULL, RSRC_CONF,
|
|
"Container for directives affecting resources located in the proxied "
|
|
"location"),
|
|
AP_INIT_RAW_ARGS("<ProxyMatch", proxysection, (void*)1, RSRC_CONF,
|
|
"Container for directives affecting resources located in the proxied "
|
|
"location, in regular expression syntax"),
|
|
AP_INIT_FLAG("ProxyRequests", set_proxy_req, NULL, RSRC_CONF,
|
|
"on if the true proxy requests should be accepted"),
|
|
AP_INIT_TAKE2("ProxyRemote", add_proxy_noregex, NULL, RSRC_CONF,
|
|
"a scheme, partial URL or '*' and a proxy server"),
|
|
AP_INIT_TAKE2("ProxyRemoteMatch", add_proxy_regex, NULL, RSRC_CONF,
|
|
"a regex pattern and a proxy server"),
|
|
AP_INIT_RAW_ARGS("ProxyPass", add_pass, NULL, RSRC_CONF|ACCESS_CONF,
|
|
"a virtual path and a URL"),
|
|
AP_INIT_TAKE12("ProxyPassReverse", add_pass_reverse, NULL, RSRC_CONF|ACCESS_CONF,
|
|
"a virtual path and a URL for reverse proxy behaviour"),
|
|
AP_INIT_TAKE2("ProxyPassReverseCookiePath", cookie_path, NULL,
|
|
RSRC_CONF|ACCESS_CONF, "Path rewrite rule for proxying cookies"),
|
|
AP_INIT_TAKE2("ProxyPassReverseCookieDomain", cookie_domain, NULL,
|
|
RSRC_CONF|ACCESS_CONF, "Domain rewrite rule for proxying cookies"),
|
|
AP_INIT_ITERATE("ProxyBlock", set_proxy_exclude, NULL, RSRC_CONF,
|
|
"A list of names, hosts or domains to which the proxy will not connect"),
|
|
AP_INIT_TAKE1("ProxyReceiveBufferSize", set_recv_buffer_size, NULL, RSRC_CONF,
|
|
"Receive buffer size for outgoing HTTP and FTP connections in bytes"),
|
|
AP_INIT_TAKE1("ProxyIOBufferSize", set_io_buffer_size, NULL, RSRC_CONF,
|
|
"IO buffer size for outgoing HTTP and FTP connections in bytes"),
|
|
AP_INIT_TAKE1("ProxyMaxForwards", set_max_forwards, NULL, RSRC_CONF,
|
|
"The maximum number of proxies a request may be forwarded through."),
|
|
AP_INIT_ITERATE("NoProxy", set_proxy_dirconn, NULL, RSRC_CONF,
|
|
"A list of domains, hosts, or subnets to which the proxy will connect directly"),
|
|
AP_INIT_TAKE1("ProxyDomain", set_proxy_domain, NULL, RSRC_CONF,
|
|
"The default intranet domain name (in absence of a domain in the URL)"),
|
|
AP_INIT_ITERATE("AllowCONNECT", set_allowed_ports, NULL, RSRC_CONF,
|
|
"A list of ports which CONNECT may connect to"),
|
|
AP_INIT_TAKE1("ProxyVia", set_via_opt, NULL, RSRC_CONF,
|
|
"Configure Via: proxy header header to one of: on | off | block | full"),
|
|
AP_INIT_FLAG("ProxyErrorOverride", set_proxy_error_override, NULL, RSRC_CONF,
|
|
"use our error handling pages instead of the servers' we are proxying"),
|
|
AP_INIT_FLAG("ProxyPreserveHost", set_preserve_host, NULL, RSRC_CONF,
|
|
"on if we should preserve host header while proxying"),
|
|
AP_INIT_TAKE1("ProxyTimeout", set_proxy_timeout, NULL, RSRC_CONF,
|
|
"Set the timeout (in seconds) for a proxied connection. "
|
|
"This overrides the server timeout"),
|
|
AP_INIT_TAKE1("ProxyBadHeader", set_bad_opt, NULL, RSRC_CONF,
|
|
"How to handle bad header line in response: IsError | Ignore | StartBody"),
|
|
AP_INIT_RAW_ARGS("BalancerMember", add_member, NULL, RSRC_CONF|ACCESS_CONF,
|
|
"A balancer name and scheme with list of params"),
|
|
AP_INIT_TAKE1("ProxyStatus", set_status_opt, NULL, RSRC_CONF,
|
|
"Configure Status: proxy status to one of: on | off | full"),
|
|
AP_INIT_RAW_ARGS("ProxySet", set_proxy_param, NULL, RSRC_CONF|ACCESS_CONF,
|
|
"A balancer or worker name with list of params"),
|
|
{NULL}
|
|
};
|
|
|
|
static APR_OPTIONAL_FN_TYPE(ssl_proxy_enable) *proxy_ssl_enable = NULL;
|
|
static APR_OPTIONAL_FN_TYPE(ssl_engine_disable) *proxy_ssl_disable = NULL;
|
|
static APR_OPTIONAL_FN_TYPE(ssl_is_https) *proxy_is_https = NULL;
|
|
static APR_OPTIONAL_FN_TYPE(ssl_var_lookup) *proxy_ssl_val = NULL;
|
|
|
|
PROXY_DECLARE(int) ap_proxy_ssl_enable(conn_rec *c)
|
|
{
|
|
/*
|
|
* if c == NULL just check if the optional function was imported
|
|
* else run the optional function so ssl filters are inserted
|
|
*/
|
|
if (proxy_ssl_enable) {
|
|
return c ? proxy_ssl_enable(c) : 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
PROXY_DECLARE(int) ap_proxy_ssl_disable(conn_rec *c)
|
|
{
|
|
if (proxy_ssl_disable) {
|
|
return proxy_ssl_disable(c);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
PROXY_DECLARE(int) ap_proxy_conn_is_https(conn_rec *c)
|
|
{
|
|
if (proxy_is_https) {
|
|
return proxy_is_https(c);
|
|
}
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
PROXY_DECLARE(const char *) ap_proxy_ssl_val(apr_pool_t *p, server_rec *s,
|
|
conn_rec *c, request_rec *r,
|
|
const char *var)
|
|
{
|
|
if (proxy_ssl_val) {
|
|
/* XXX Perhaps the casting useless */
|
|
return (const char *)proxy_ssl_val(p, s, c, r, (char *)var);
|
|
}
|
|
else
|
|
return NULL;
|
|
}
|
|
|
|
static int proxy_post_config(apr_pool_t *pconf, apr_pool_t *plog,
|
|
apr_pool_t *ptemp, server_rec *s)
|
|
{
|
|
|
|
proxy_ssl_enable = APR_RETRIEVE_OPTIONAL_FN(ssl_proxy_enable);
|
|
proxy_ssl_disable = APR_RETRIEVE_OPTIONAL_FN(ssl_engine_disable);
|
|
proxy_is_https = APR_RETRIEVE_OPTIONAL_FN(ssl_is_https);
|
|
proxy_ssl_val = APR_RETRIEVE_OPTIONAL_FN(ssl_var_lookup);
|
|
|
|
return OK;
|
|
}
|
|
|
|
/*
|
|
* proxy Extension to mod_status
|
|
*/
|
|
static int proxy_status_hook(request_rec *r, int flags)
|
|
{
|
|
int i, n;
|
|
void *sconf = r->server->module_config;
|
|
proxy_server_conf *conf = (proxy_server_conf *)
|
|
ap_get_module_config(sconf, &proxy_module);
|
|
proxy_balancer *balancer = NULL;
|
|
proxy_worker *worker = NULL;
|
|
|
|
if (flags & AP_STATUS_SHORT || conf->balancers->nelts == 0 ||
|
|
conf->proxy_status == status_off)
|
|
return OK;
|
|
|
|
balancer = (proxy_balancer *)conf->balancers->elts;
|
|
for (i = 0; i < conf->balancers->nelts; i++) {
|
|
ap_rputs("<hr />\n<h1>Proxy LoadBalancer Status for ", r);
|
|
ap_rvputs(r, balancer->name, "</h1>\n\n", NULL);
|
|
ap_rputs("\n\n<table border=\"0\"><tr>"
|
|
"<th>SSes</th><th>Timeout</th><th>Method</th>"
|
|
"</tr>\n<tr>", r);
|
|
ap_rvputs(r, "<td>", balancer->sticky, NULL);
|
|
ap_rprintf(r, "</td><td>%" APR_TIME_T_FMT "</td>",
|
|
apr_time_sec(balancer->timeout));
|
|
ap_rprintf(r, "<td>%s</td>\n",
|
|
balancer->lbmethod->name);
|
|
ap_rputs("</table>\n", r);
|
|
ap_rputs("\n\n<table border=\"0\"><tr>"
|
|
"<th>Sch</th><th>Host</th><th>Stat</th>"
|
|
"<th>Route</th><th>Redir</th>"
|
|
"<th>F</th><th>Acc</th><th>Wr</th><th>Rd</th>"
|
|
"</tr>\n", r);
|
|
|
|
worker = (proxy_worker *)balancer->workers->elts;
|
|
for (n = 0; n < balancer->workers->nelts; n++) {
|
|
char fbuf[50];
|
|
ap_rvputs(r, "<tr>\n<td>", worker->scheme, "</td>", NULL);
|
|
ap_rvputs(r, "<td>", worker->hostname, "</td><td>", NULL);
|
|
if (worker->s->status & PROXY_WORKER_DISABLED)
|
|
ap_rputs("Dis", r);
|
|
else if (worker->s->status & PROXY_WORKER_IN_ERROR)
|
|
ap_rputs("Err", r);
|
|
else if (worker->s->status & PROXY_WORKER_INITIALIZED)
|
|
ap_rputs("Ok", r);
|
|
else
|
|
ap_rputs("-", r);
|
|
ap_rvputs(r, "</td><td>", worker->s->route, NULL);
|
|
ap_rvputs(r, "</td><td>", worker->s->redirect, NULL);
|
|
ap_rprintf(r, "</td><td>%d</td>", worker->s->lbfactor);
|
|
ap_rprintf(r, "<td>%d</td><td>", (int)(worker->s->elected));
|
|
ap_rputs(apr_strfsize(worker->s->transferred, fbuf), r);
|
|
ap_rputs("</td><td>", r);
|
|
ap_rputs(apr_strfsize(worker->s->read, fbuf), r);
|
|
ap_rputs("</td>\n", r);
|
|
|
|
/* TODO: Add the rest of dynamic worker data */
|
|
ap_rputs("</tr>\n", r);
|
|
|
|
++worker;
|
|
}
|
|
ap_rputs("</table>\n", r);
|
|
++balancer;
|
|
}
|
|
ap_rputs("<hr /><table>\n"
|
|
"<tr><th>SSes</th><td>Sticky session name</td></tr>\n"
|
|
"<tr><th>Timeout</th><td>Balancer Timeout</td></tr>\n"
|
|
"<tr><th>Sch</th><td>Connection scheme</td></tr>\n"
|
|
"<tr><th>Host</th><td>Backend Hostname</td></tr>\n"
|
|
"<tr><th>Stat</th><td>Worker status</td></tr>\n"
|
|
"<tr><th>Route</th><td>Session Route</td></tr>\n"
|
|
"<tr><th>Redir</th><td>Session Route Redirection</td></tr>\n"
|
|
"<tr><th>F</th><td>Load Balancer Factor in %</td></tr>\n"
|
|
"<tr><th>Acc</th><td>Number of requests</td></tr>\n"
|
|
"<tr><th>Wr</th><td>Number of bytes transferred</td></tr>\n"
|
|
"<tr><th>Rd</th><td>Number of bytes read</td></tr>\n"
|
|
"</table>", r);
|
|
|
|
return OK;
|
|
}
|
|
|
|
static void child_init(apr_pool_t *p, server_rec *s)
|
|
{
|
|
proxy_worker *reverse = NULL;
|
|
|
|
while (s) {
|
|
void *sconf = s->module_config;
|
|
proxy_server_conf *conf;
|
|
proxy_worker *worker;
|
|
int i;
|
|
|
|
conf = (proxy_server_conf *)ap_get_module_config(sconf, &proxy_module);
|
|
/* Initialize worker's shared scoreboard data */
|
|
worker = (proxy_worker *)conf->workers->elts;
|
|
for (i = 0; i < conf->workers->nelts; i++) {
|
|
ap_proxy_initialize_worker_share(conf, worker, s);
|
|
ap_proxy_initialize_worker(worker, s);
|
|
worker++;
|
|
}
|
|
/* Initialize forward worker if defined */
|
|
if (conf->forward) {
|
|
ap_proxy_initialize_worker_share(conf, conf->forward, s);
|
|
ap_proxy_initialize_worker(conf->forward, s);
|
|
/* Do not disable worker in case of errors */
|
|
conf->forward->s->status |= PROXY_WORKER_IGNORE_ERRORS;
|
|
/* Disable address cache for generic forward worker */
|
|
conf->forward->is_address_reusable = 0;
|
|
}
|
|
if (!reverse) {
|
|
reverse = ap_proxy_create_worker(p);
|
|
reverse->name = "proxy:reverse";
|
|
reverse->hostname = "*";
|
|
reverse->scheme = "*";
|
|
ap_proxy_initialize_worker_share(conf, reverse, s);
|
|
ap_proxy_initialize_worker(reverse, s);
|
|
/* Do not disable worker in case of errors */
|
|
reverse->s->status |= PROXY_WORKER_IGNORE_ERRORS;
|
|
/* Disable address cache for generic reverse worker */
|
|
reverse->is_address_reusable = 0;
|
|
}
|
|
conf->reverse = reverse;
|
|
s = s->next;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* This routine is called before the server processes the configuration
|
|
* files. There is no return value.
|
|
*/
|
|
static int proxy_pre_config(apr_pool_t *pconf, apr_pool_t *plog,
|
|
apr_pool_t *ptemp)
|
|
{
|
|
APR_OPTIONAL_HOOK(ap, status_hook, proxy_status_hook, NULL, NULL,
|
|
APR_HOOK_MIDDLE);
|
|
/* Reset workers count on gracefull restart */
|
|
proxy_lb_workers = 0;
|
|
return OK;
|
|
}
|
|
|
|
static void register_hooks(apr_pool_t *p)
|
|
{
|
|
/* fixup before mod_rewrite, so that the proxied url will not
|
|
* escaped accidentally by our fixup.
|
|
*/
|
|
static const char * const aszSucc[]={ "mod_rewrite.c", NULL };
|
|
/* Only the mpm_winnt has child init hook handler.
|
|
* make sure that we are called after the mpm
|
|
* initializes.
|
|
*/
|
|
static const char *const aszPred[] = { "mpm_winnt.c", NULL};
|
|
|
|
APR_REGISTER_OPTIONAL_FN(ap_proxy_lb_workers);
|
|
/* handler */
|
|
ap_hook_handler(proxy_handler, NULL, NULL, APR_HOOK_FIRST);
|
|
/* filename-to-URI translation */
|
|
ap_hook_translate_name(proxy_trans, aszSucc, NULL, APR_HOOK_FIRST);
|
|
/* walk <Proxy > entries and suppress default TRACE behavior */
|
|
ap_hook_map_to_storage(proxy_map_location, NULL,NULL, APR_HOOK_FIRST);
|
|
/* fixups */
|
|
ap_hook_fixups(proxy_fixup, NULL, aszSucc, APR_HOOK_FIRST);
|
|
/* post read_request handling */
|
|
ap_hook_post_read_request(proxy_detect, NULL, NULL, APR_HOOK_FIRST);
|
|
/* pre config handling */
|
|
ap_hook_pre_config(proxy_pre_config, NULL, NULL, APR_HOOK_MIDDLE);
|
|
/* post config handling */
|
|
ap_hook_post_config(proxy_post_config, NULL, NULL, APR_HOOK_MIDDLE);
|
|
/* child init handling */
|
|
ap_hook_child_init(child_init, aszPred, NULL, APR_HOOK_MIDDLE);
|
|
|
|
}
|
|
|
|
module AP_MODULE_DECLARE_DATA proxy_module =
|
|
{
|
|
STANDARD20_MODULE_STUFF,
|
|
create_proxy_dir_config, /* create per-directory config structure */
|
|
merge_proxy_dir_config, /* merge per-directory config structures */
|
|
create_proxy_config, /* create per-server config structure */
|
|
merge_proxy_config, /* merge per-server config structures */
|
|
proxy_cmds, /* command table */
|
|
register_hooks
|
|
};
|
|
|
|
APR_HOOK_STRUCT(
|
|
APR_HOOK_LINK(scheme_handler)
|
|
APR_HOOK_LINK(canon_handler)
|
|
APR_HOOK_LINK(pre_request)
|
|
APR_HOOK_LINK(post_request)
|
|
APR_HOOK_LINK(request_status)
|
|
)
|
|
|
|
APR_IMPLEMENT_EXTERNAL_HOOK_RUN_FIRST(proxy, PROXY, int, scheme_handler,
|
|
(request_rec *r, proxy_worker *worker,
|
|
proxy_server_conf *conf,
|
|
char *url, const char *proxyhost,
|
|
apr_port_t proxyport),(r,worker,conf,
|
|
url,proxyhost,proxyport),DECLINED)
|
|
APR_IMPLEMENT_EXTERNAL_HOOK_RUN_FIRST(proxy, PROXY, int, canon_handler,
|
|
(request_rec *r, char *url),(r,
|
|
url),DECLINED)
|
|
APR_IMPLEMENT_EXTERNAL_HOOK_RUN_FIRST(proxy, PROXY, int, pre_request, (
|
|
proxy_worker **worker,
|
|
proxy_balancer **balancer,
|
|
request_rec *r,
|
|
proxy_server_conf *conf,
|
|
char **url),(worker,balancer,
|
|
r,conf,url),DECLINED)
|
|
APR_IMPLEMENT_EXTERNAL_HOOK_RUN_FIRST(proxy, PROXY, int, post_request,
|
|
(proxy_worker *worker,
|
|
proxy_balancer *balancer,
|
|
request_rec *r,
|
|
proxy_server_conf *conf),(worker,
|
|
balancer,r,conf),DECLINED)
|
|
APR_IMPLEMENT_OPTIONAL_HOOK_RUN_ALL(proxy, PROXY, int, fixups,
|
|
(request_rec *r), (r),
|
|
OK, DECLINED)
|
|
APR_IMPLEMENT_OPTIONAL_HOOK_RUN_ALL(proxy, PROXY, int, request_status,
|
|
(int *status, request_rec *r),
|
|
(status, r),
|
|
OK, DECLINED)
|