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-rw-r--r--modules/proxy/mod_proxy.c3474
1 files changed, 3474 insertions, 0 deletions
diff --git a/modules/proxy/mod_proxy.c b/modules/proxy/mod_proxy.c
new file mode 100644
index 0000000..9225bc9
--- /dev/null
+++ b/modules/proxy/mod_proxy.c
@@ -0,0 +1,3474 @@
+/* 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.
+ */
+
+#include "mod_proxy.h"
+#include "mod_core.h"
+#include "apr_optional.h"
+#include "apr_strings.h"
+#include "scoreboard.h"
+#include "mod_status.h"
+#include "proxy_util.h"
+
+#if (MODULE_MAGIC_NUMBER_MAJOR > 20020903)
+#include "mod_ssl.h"
+#else
+APR_DECLARE_OPTIONAL_FN(int, ssl_proxy_enable, (conn_rec *));
+APR_DECLARE_OPTIONAL_FN(int, ssl_engine_disable, (conn_rec *));
+APR_DECLARE_OPTIONAL_FN(int, ssl_engine_set, (conn_rec *,
+ ap_conf_vector_t *,
+ int proxy, int enable));
+#endif
+
+#ifndef MAX
+#define MAX(x,y) ((x) >= (y) ? (x) : (y))
+#endif
+
+/*
+ * We do health-checks only if that (sub)module is loaded in. This
+ * allows for us to continue as is w/o requiring mod_watchdog for
+ * those implementations which aren't using health checks
+ */
+static APR_OPTIONAL_FN_TYPE(set_worker_hc_param) *set_worker_hc_param_f = NULL;
+
+/* Externals */
+proxy_hcmethods_t PROXY_DECLARE_DATA proxy_hcmethods[] = {
+ {NONE, "NONE", 1},
+ {TCP, "TCP", 1},
+ {OPTIONS, "OPTIONS", 1},
+ {HEAD, "HEAD", 1},
+ {GET, "GET", 1},
+ {CPING, "CPING", 0},
+ {PROVIDER, "PROVIDER", 0},
+ {OPTIONS11, "OPTIONS11", 1},
+ {HEAD11, "HEAD11", 1},
+ {GET11, "GET11", 1},
+ {EOT, NULL, 1}
+};
+
+proxy_wstat_t PROXY_DECLARE_DATA proxy_wstat_tbl[] = {
+ {PROXY_WORKER_INITIALIZED, PROXY_WORKER_INITIALIZED_FLAG, "Init "},
+ {PROXY_WORKER_IGNORE_ERRORS, PROXY_WORKER_IGNORE_ERRORS_FLAG, "Ign "},
+ {PROXY_WORKER_DRAIN, PROXY_WORKER_DRAIN_FLAG, "Drn "},
+ {PROXY_WORKER_GENERIC, PROXY_WORKER_GENERIC_FLAG, "Gen "},
+ {PROXY_WORKER_IN_SHUTDOWN, PROXY_WORKER_IN_SHUTDOWN_FLAG, "Shut "},
+ {PROXY_WORKER_DISABLED, PROXY_WORKER_DISABLED_FLAG, "Dis "},
+ {PROXY_WORKER_STOPPED, PROXY_WORKER_STOPPED_FLAG, "Stop "},
+ {PROXY_WORKER_IN_ERROR, PROXY_WORKER_IN_ERROR_FLAG, "Err "},
+ {PROXY_WORKER_HOT_STANDBY, PROXY_WORKER_HOT_STANDBY_FLAG, "Stby "},
+ {PROXY_WORKER_HOT_SPARE, PROXY_WORKER_HOT_SPARE_FLAG, "Spar "},
+ {PROXY_WORKER_FREE, PROXY_WORKER_FREE_FLAG, "Free "},
+ {PROXY_WORKER_HC_FAIL, PROXY_WORKER_HC_FAIL_FLAG, "HcFl "},
+ {0x0, '\0', NULL}
+};
+
+static const char * const proxy_id = "proxy";
+apr_global_mutex_t *proxy_mutex = NULL;
+
+/*
+ * A Web proxy module. Stages:
+ *
+ * translate_name: set filename to proxy:<URL>
+ * map_to_storage: run proxy_walk (rather than directory_walk/file_walk)
+ * can't trust directory_walk/file_walk since these are
+ * not in our filesystem. Prevents mod_http from serving
+ * the TRACE request we will set aside to handle later.
+ * fix_ups: convert the URL stored in the filename to the
+ * canonical form.
+ * handler: handle proxy requests
+ */
+
+/* -------------------------------------------------------------- */
+/* Translate the URL into a 'filename' */
+
+static const char *set_worker_param(apr_pool_t *p,
+ server_rec *s,
+ proxy_worker *worker,
+ const char *key,
+ const char *val)
+{
+
+ int ival;
+ apr_interval_time_t timeout;
+
+ if (!strcasecmp(key, "loadfactor")) {
+ /* Normalized load factor. Used with BalancerMember,
+ * it is a number between 1 and 100.
+ */
+ double fval = atof(val);
+ ival = fval * 100.0;
+ if (ival < 100 || ival > 10000)
+ return "LoadFactor must be a number between 1..100";
+ worker->s->lbfactor = ival;
+ }
+ else if (!strcasecmp(key, "retry")) {
+ /* If set it will give the retry timeout for the worker
+ * The default value is 60 seconds, meaning that if
+ * in error state, it will be retried after that timeout.
+ */
+ ival = atoi(val);
+ if (ival < 0)
+ return "Retry must be a positive value";
+ worker->s->retry = apr_time_from_sec(ival);
+ worker->s->retry_set = 1;
+ }
+ else if (!strcasecmp(key, "ttl")) {
+ /* Time in seconds that will destroy all the connections
+ * that exceed the smax
+ */
+ ival = atoi(val);
+ if (ival < 1)
+ return "TTL must be at least one second";
+ worker->s->ttl = apr_time_from_sec(ival);
+ }
+ else if (!strcasecmp(key, "min")) {
+ /* Initial number of connections to remote
+ */
+ ival = atoi(val);
+ if (ival < 0)
+ return "Min must be a positive number";
+ worker->s->min = ival;
+ }
+ else if (!strcasecmp(key, "max")) {
+ /* Maximum number of connections to remote
+ */
+ ival = atoi(val);
+ if (ival < 0)
+ return "Max must be a positive number";
+ worker->s->hmax = ival;
+ }
+ /* XXX: More intelligent naming needed */
+ else if (!strcasecmp(key, "smax")) {
+ /* Maximum number of connections to remote that
+ * will not be destroyed
+ */
+ ival = atoi(val);
+ if (ival < 0)
+ return "Smax must be a positive number";
+ worker->s->smax = ival;
+ }
+ else if (!strcasecmp(key, "acquire")) {
+ /* Acquire timeout in given unit (default is milliseconds).
+ * If set this will be the maximum time to
+ * wait for a free connection.
+ */
+ if (ap_timeout_parameter_parse(val, &timeout, "ms") != APR_SUCCESS)
+ return "Acquire timeout has wrong format";
+ if (timeout < 1000)
+ return "Acquire must be at least one millisecond";
+ worker->s->acquire = timeout;
+ worker->s->acquire_set = 1;
+ }
+ else if (!strcasecmp(key, "timeout")) {
+ /* Connection timeout in seconds.
+ * Defaults to server timeout.
+ */
+ ival = atoi(val);
+ if (ival < 1)
+ return "Timeout must be at least one second";
+ worker->s->timeout = apr_time_from_sec(ival);
+ worker->s->timeout_set = 1;
+ }
+ else if (!strcasecmp(key, "iobuffersize")) {
+ long s = atol(val);
+ if (s < 512 && s) {
+ return "IOBufferSize must be >= 512 bytes, or 0 for system default.";
+ }
+ worker->s->io_buffer_size = (s ? s : AP_IOBUFSIZE);
+ worker->s->io_buffer_size_set = 1;
+ }
+ else if (!strcasecmp(key, "receivebuffersize")) {
+ ival = atoi(val);
+ if (ival < 512 && ival != 0) {
+ return "ReceiveBufferSize must be >= 512 bytes, or 0 for system default.";
+ }
+ worker->s->recv_buffer_size = ival;
+ worker->s->recv_buffer_size_set = 1;
+ }
+ else if (!strcasecmp(key, "keepalive")) {
+ if (!strcasecmp(val, "on"))
+ worker->s->keepalive = 1;
+ else if (!strcasecmp(val, "off"))
+ worker->s->keepalive = 0;
+ else
+ return "KeepAlive must be On|Off";
+ worker->s->keepalive_set = 1;
+ }
+ else if (!strcasecmp(key, "disablereuse")) {
+ if (!strcasecmp(val, "on"))
+ worker->s->disablereuse = 1;
+ else if (!strcasecmp(val, "off"))
+ worker->s->disablereuse = 0;
+ else
+ return "DisableReuse must be On|Off";
+ worker->s->disablereuse_set = 1;
+ }
+ else if (!strcasecmp(key, "enablereuse")) {
+ if (!strcasecmp(val, "on"))
+ worker->s->disablereuse = 0;
+ else if (!strcasecmp(val, "off"))
+ worker->s->disablereuse = 1;
+ else
+ return "EnableReuse must be On|Off";
+ worker->s->disablereuse_set = 1;
+ }
+ else if (!strcasecmp(key, "route")) {
+ /* Worker route.
+ */
+ if (strlen(val) >= sizeof(worker->s->route))
+ return apr_psprintf(p, "Route length must be < %d characters",
+ (int)sizeof(worker->s->route));
+ PROXY_STRNCPY(worker->s->route, val);
+ }
+ else if (!strcasecmp(key, "redirect")) {
+ /* Worker redirection route.
+ */
+ if (strlen(val) >= sizeof(worker->s->redirect))
+ return apr_psprintf(p, "Redirect length must be < %d characters",
+ (int)sizeof(worker->s->redirect));
+ PROXY_STRNCPY(worker->s->redirect, val);
+ }
+ else if (!strcasecmp(key, "status")) {
+ const char *v;
+ int mode = 1;
+ apr_status_t rv;
+ /* Worker status.
+ */
+ for (v = val; *v; v++) {
+ if (*v == '+') {
+ mode = 1;
+ v++;
+ }
+ else if (*v == '-') {
+ mode = 0;
+ v++;
+ }
+ rv = ap_proxy_set_wstatus(*v, mode, worker);
+ if (rv != APR_SUCCESS)
+ return "Unknown status parameter option";
+ }
+ }
+ else if (!strcasecmp(key, "flushpackets")) {
+ if (!strcasecmp(val, "on"))
+ worker->s->flush_packets = flush_on;
+ else if (!strcasecmp(val, "off"))
+ worker->s->flush_packets = flush_off;
+ else if (!strcasecmp(val, "auto"))
+ worker->s->flush_packets = flush_auto;
+ else
+ return "flushpackets must be on|off|auto";
+ }
+ else if (!strcasecmp(key, "flushwait")) {
+ ival = atoi(val);
+ if (ival > 1000 || ival < 0) {
+ return "flushwait must be <= 1000, or 0 for system default of 10 millseconds.";
+ }
+ if (ival == 0)
+ worker->s->flush_wait = PROXY_FLUSH_WAIT;
+ else
+ worker->s->flush_wait = ival * 1000; /* change to microseconds */
+ }
+ else if (!strcasecmp(key, "ping")) {
+ /* Ping/Pong timeout in given unit (default is second).
+ */
+ if (ap_timeout_parameter_parse(val, &timeout, "s") != APR_SUCCESS)
+ return "Ping/Pong timeout has wrong format";
+ if (timeout < 1000)
+ return "Ping/Pong timeout must be at least one millisecond";
+ worker->s->ping_timeout = timeout;
+ worker->s->ping_timeout_set = 1;
+ }
+ else if (!strcasecmp(key, "lbset")) {
+ ival = atoi(val);
+ if (ival < 0 || ival > 99)
+ return "lbset must be between 0 and 99";
+ worker->s->lbset = ival;
+ }
+ else if (!strcasecmp(key, "connectiontimeout")) {
+ /* Request timeout in given unit (default is second).
+ * Defaults to connection timeout
+ */
+ if (ap_timeout_parameter_parse(val, &timeout, "s") != APR_SUCCESS)
+ return "Connectiontimeout has wrong format";
+ if (timeout < 1000)
+ return "Connectiontimeout must be at least one millisecond.";
+ worker->s->conn_timeout = timeout;
+ worker->s->conn_timeout_set = 1;
+ }
+ else if (!strcasecmp(key, "flusher")) {
+ if (PROXY_STRNCPY(worker->s->flusher, val) != APR_SUCCESS) {
+ return apr_psprintf(p, "flusher name length must be < %d characters",
+ (int)sizeof(worker->s->flusher));
+ }
+ }
+ else if (!strcasecmp(key, "upgrade")) {
+ if (PROXY_STRNCPY(worker->s->upgrade,
+ strcasecmp(val, "ANY") ? val : "*") != APR_SUCCESS) {
+ return apr_psprintf(p, "upgrade protocol length must be < %d characters",
+ (int)sizeof(worker->s->upgrade));
+ }
+ }
+ else if (!strcasecmp(key, "responsefieldsize")) {
+ long s = atol(val);
+ if (s < 0) {
+ return "ResponseFieldSize must be greater than 0 bytes, or 0 for system default.";
+ }
+ worker->s->response_field_size = (s ? s : HUGE_STRING_LEN);
+ worker->s->response_field_size_set = 1;
+ }
+ else if (!strcasecmp(key, "secret")) {
+ if (PROXY_STRNCPY(worker->s->secret, val) != APR_SUCCESS) {
+ return apr_psprintf(p, "Secret length must be < %d characters",
+ (int)sizeof(worker->s->secret));
+ }
+ }
+ else {
+ if (set_worker_hc_param_f) {
+ return set_worker_hc_param_f(p, s, worker, key, val, NULL);
+ } else {
+ return "unknown Worker parameter";
+ }
+ }
+ return NULL;
+}
+
+static const char *set_balancer_param(proxy_server_conf *conf,
+ apr_pool_t *p,
+ proxy_balancer *balancer,
+ const char *key,
+ const char *val)
+{
+
+ int ival;
+ if (!strcasecmp(key, "stickysession")) {
+ char *path;
+ /* Balancer sticky session name.
+ * Set to something like JSESSIONID or
+ * PHPSESSIONID, etc..,
+ */
+ if (strlen(val) >= sizeof(balancer->s->sticky_path))
+ apr_psprintf(p, "stickysession length must be < %d characters",
+ (int)sizeof(balancer->s->sticky_path));
+ PROXY_STRNCPY(balancer->s->sticky_path, val);
+ PROXY_STRNCPY(balancer->s->sticky, val);
+
+ if ((path = strchr((char *)balancer->s->sticky, '|'))) {
+ *path++ = '\0';
+ PROXY_STRNCPY(balancer->s->sticky_path, path);
+ }
+ }
+ else if (!strcasecmp(key, "stickysessionsep")) {
+ /* separator/delimiter for sessionid and route,
+ * normally '.'
+ */
+ if (strlen(val) != 1) {
+ if (!strcasecmp(val, "off"))
+ balancer->s->sticky_separator = 0;
+ else
+ return "stickysessionsep must be a single character or Off";
+ }
+ else
+ balancer->s->sticky_separator = *val;
+ balancer->s->sticky_separator_set = 1;
+ }
+ else if (!strcasecmp(key, "nofailover")) {
+ /* If set to 'on' the session will break
+ * if the worker is in error state or
+ * disabled.
+ */
+ if (!strcasecmp(val, "on"))
+ balancer->s->sticky_force = 1;
+ else if (!strcasecmp(val, "off"))
+ balancer->s->sticky_force = 0;
+ else
+ return "failover must be On|Off";
+ balancer->s->sticky_force_set = 1;
+ }
+ else if (!strcasecmp(key, "timeout")) {
+ /* Balancer timeout in seconds.
+ * If set this will be the maximum time to
+ * wait for a free worker.
+ * Default is not to wait.
+ */
+ ival = atoi(val);
+ if (ival < 1)
+ return "timeout must be at least one second";
+ balancer->s->timeout = apr_time_from_sec(ival);
+ }
+ else if (!strcasecmp(key, "maxattempts")) {
+ /* Maximum number of failover attempts before
+ * giving up.
+ */
+ ival = atoi(val);
+ if (ival < 0)
+ return "maximum number of attempts must be a positive number";
+ balancer->s->max_attempts = ival;
+ balancer->s->max_attempts_set = 1;
+ }
+ else if (!strcasecmp(key, "lbmethod")) {
+ proxy_balancer_method *provider;
+ if (strlen(val) > (sizeof(balancer->s->lbpname)-1))
+ return "unknown lbmethod";
+ provider = ap_lookup_provider(PROXY_LBMETHOD, val, "0");
+ if (provider) {
+ balancer->lbmethod = provider;
+ if (PROXY_STRNCPY(balancer->s->lbpname, val) == APR_SUCCESS) {
+ balancer->lbmethod_set = 1;
+ return NULL;
+ }
+ else {
+ return "lbmethod name too large";
+ }
+ }
+ return "unknown lbmethod";
+ }
+ else if (!strcasecmp(key, "scolonpathdelim")) {
+ /* If set to 'on' then ';' will also be
+ * used as a session path separator/delim (ala
+ * mod_jk)
+ */
+ if (!strcasecmp(val, "on"))
+ balancer->s->scolonsep = 1;
+ else if (!strcasecmp(val, "off"))
+ balancer->s->scolonsep = 0;
+ else
+ return "scolonpathdelim must be On|Off";
+ balancer->s->scolonsep_set = 1;
+ }
+ else if (!strcasecmp(key, "failonstatus")) {
+ char *val_split;
+ char *status;
+ char *tok_state;
+
+ val_split = apr_pstrdup(p, val);
+
+ balancer->errstatuses = apr_array_make(p, 1, sizeof(int));
+
+ status = apr_strtok(val_split, ", ", &tok_state);
+ while (status != NULL) {
+ ival = atoi(status);
+ if (ap_is_HTTP_VALID_RESPONSE(ival)) {
+ *(int *)apr_array_push(balancer->errstatuses) = ival;
+ }
+ else {
+ return "failonstatus must be one or more HTTP response codes";
+ }
+ status = apr_strtok(NULL, ", ", &tok_state);
+ }
+
+ }
+ else if (!strcasecmp(key, "failontimeout")) {
+ if (!strcasecmp(val, "on"))
+ balancer->failontimeout = 1;
+ else if (!strcasecmp(val, "off"))
+ balancer->failontimeout = 0;
+ else
+ return "failontimeout must be On|Off";
+ balancer->failontimeout_set = 1;
+ }
+ else if (!strcasecmp(key, "nonce")) {
+ if (!strcasecmp(val, "None")) {
+ *balancer->s->nonce = '\0';
+ }
+ else {
+ if (PROXY_STRNCPY(balancer->s->nonce, val) != APR_SUCCESS) {
+ return "Provided nonce is too large";
+ }
+ }
+ balancer->s->nonce_set = 1;
+ }
+ else if (!strcasecmp(key, "growth")) {
+ ival = atoi(val);
+ if (ival < 1 || ival > 100) /* arbitrary limit here */
+ return "growth must be between 1 and 100";
+ balancer->growth = ival;
+ balancer->growth_set = 1;
+ }
+ else if (!strcasecmp(key, "forcerecovery")) {
+ if (!strcasecmp(val, "on"))
+ balancer->s->forcerecovery = 1;
+ else if (!strcasecmp(val, "off"))
+ balancer->s->forcerecovery = 0;
+ else
+ return "forcerecovery must be On|Off";
+ balancer->s->forcerecovery_set = 1;
+ }
+ else {
+ return "unknown Balancer parameter";
+ }
+ return NULL;
+}
+
+static int alias_match(const char *uri, const char *alias_fakename)
+{
+ const char *end_fakename = alias_fakename + strlen(alias_fakename);
+ const char *aliasp = alias_fakename, *urip = uri;
+ const char *end_uri = uri + strlen(uri);
+
+ while (aliasp < end_fakename && urip < end_uri) {
+ if (*aliasp == '/') {
+ /* any number of '/' in the alias matches any number in
+ * the supplied URI, but there must be at least one...
+ */
+ if (*urip != '/')
+ return 0;
+
+ while (*aliasp == '/')
+ ++aliasp;
+ while (*urip == '/')
+ ++urip;
+ }
+ else {
+ /* Other characters are compared literally */
+ if (*urip++ != *aliasp++)
+ return 0;
+ }
+ }
+
+ /* fixup badly encoded stuff (e.g. % as last character) */
+ if (aliasp > end_fakename) {
+ aliasp = end_fakename;
+ }
+ if (urip > end_uri) {
+ urip = end_uri;
+ }
+
+ /* We reach the end of the uri before the end of "alias_fakename"
+ * for example uri is "/" and alias_fakename "/examples"
+ */
+ if (urip == end_uri && aliasp != end_fakename) {
+ return 0;
+ }
+
+ /* Check last alias path component matched all the way */
+ if (aliasp[-1] != '/' && *urip != '\0' && *urip != '/')
+ return 0;
+
+ /* Return number of characters from URI which matched (may be
+ * greater than length of alias, since we may have matched
+ * doubled slashes)
+ */
+
+ return urip - uri;
+}
+
+/*
+ * Inspired by mod_jk's jk_servlet_normalize().
+ */
+static int alias_match_servlet(apr_pool_t *p,
+ const char **urip,
+ const char *alias)
+{
+ char *map;
+ const char *uri = *urip;
+ apr_array_header_t *stack;
+ int map_pos, uri_pos, alias_pos, first_pos;
+ int alias_depth = 0, depth;
+
+ /* Both uri and alias should start with '/' */
+ if (uri[0] != '/' || alias[0] != '/') {
+ return 0;
+ }
+
+ stack = apr_array_make(p, 5, sizeof(int));
+ map = apr_palloc(p, strlen(uri) + 1);
+ map[0] = '/';
+ map[1] = '\0';
+
+ map_pos = uri_pos = alias_pos = first_pos = 1;
+ while (uri[uri_pos] != '\0') {
+ /* Remove path parameters ;foo=bar/ from any path segment */
+ if (uri[uri_pos] == ';') {
+ do {
+ uri_pos++;
+ } while (uri[uri_pos] != '/' && uri[uri_pos] != '\0');
+ continue;
+ }
+
+ if (map[map_pos - 1] == '/') {
+ /* Collapse ///// sequences to / */
+ if (uri[uri_pos] == '/') {
+ do {
+ uri_pos++;
+ } while (uri[uri_pos] == '/');
+ continue;
+ }
+
+ if (uri[uri_pos] == '.') {
+ /* Remove /./ segments */
+ if (uri[uri_pos + 1] == '/'
+ || uri[uri_pos + 1] == ';'
+ || uri[uri_pos + 1] == '\0') {
+ uri_pos++;
+ if (uri[uri_pos] == '/') {
+ uri_pos++;
+ }
+ continue;
+ }
+
+ /* Remove /xx/../ segments */
+ if (uri[uri_pos + 1] == '.'
+ && (uri[uri_pos + 2] == '/'
+ || uri[uri_pos + 2] == ';'
+ || uri[uri_pos + 2] == '\0')) {
+ /* Wind map segment back the previous one */
+ if (map_pos == 1) {
+ /* Above root */
+ return 0;
+ }
+ do {
+ map_pos--;
+ } while (map[map_pos - 1] != '/');
+ map[map_pos] = '\0';
+
+ /* Wind alias segment back, unless in deeper segment */
+ if (alias_depth == stack->nelts) {
+ if (alias[alias_pos] == '\0') {
+ alias_pos--;
+ }
+ while (alias_pos > 0 && alias[alias_pos] == '/') {
+ alias_pos--;
+ }
+ while (alias_pos > 0 && alias[alias_pos - 1] != '/') {
+ alias_pos--;
+ }
+ AP_DEBUG_ASSERT(alias_pos > 0);
+ alias_depth--;
+ }
+ apr_array_pop(stack);
+
+ /* Move uri forward to the next segment */
+ uri_pos += 2;
+ if (uri[uri_pos] == '/') {
+ uri_pos++;
+ }
+ first_pos = 0;
+ continue;
+ }
+ }
+ if (first_pos) {
+ while (uri[first_pos] == '/') {
+ first_pos++;
+ }
+ }
+
+ /* New segment */
+ APR_ARRAY_PUSH(stack, int) = first_pos ? first_pos : uri_pos;
+ if (alias[alias_pos] != '\0') {
+ if (alias[alias_pos - 1] != '/') {
+ /* Remain in pair with uri segments */
+ do {
+ alias_pos++;
+ } while (alias[alias_pos - 1] != '/' && alias[alias_pos]);
+ }
+ while (alias[alias_pos] == '/') {
+ alias_pos++;
+ }
+ if (alias[alias_pos] != '\0') {
+ alias_depth++;
+ }
+ }
+ }
+
+ if (alias[alias_pos] != '\0') {
+ int *match = &APR_ARRAY_IDX(stack, alias_depth - 1, int);
+ if (*match) {
+ if (alias[alias_pos] != uri[uri_pos]) {
+ /* Current segment does not match */
+ *match = 0;
+ }
+ else if (alias[alias_pos + 1] == '\0'
+ && alias[alias_pos] != '/') {
+ if (uri[uri_pos + 1] == ';') {
+ /* We'll preserve the parameters of the last
+ * segment if it does not end with '/', so mark
+ * the match as negative for below handling.
+ */
+ *match = -(uri_pos + 1);
+ }
+ else if (uri[uri_pos + 1] != '/'
+ && uri[uri_pos + 1] != '\0') {
+ /* Last segment does not match all the way */
+ *match = 0;
+ }
+ }
+ }
+ /* Don't go past the segment if the uri isn't there yet */
+ if (alias[alias_pos] != '/' || uri[uri_pos] == '/') {
+ alias_pos++;
+ }
+ }
+
+ if (uri[uri_pos] == '/') {
+ first_pos = uri_pos + 1;
+ }
+ map[map_pos++] = uri[uri_pos++];
+ map[map_pos] = '\0';
+ }
+
+ /* Can't reach the end of uri before the end of the alias,
+ * for example if uri is "/" and alias is "/examples"
+ */
+ if (alias[alias_pos] != '\0') {
+ return 0;
+ }
+
+ /* Check whether each alias segment matched */
+ for (depth = 0; depth < alias_depth; ++depth) {
+ if (!APR_ARRAY_IDX(stack, depth, int)) {
+ return 0;
+ }
+ }
+
+ /* If alias_depth == stack->nelts we have a full match, i.e.
+ * uri == alias so we can return uri_pos as is (the end of uri)
+ */
+ if (alias_depth < stack->nelts) {
+ /* Return the segment following the alias */
+ uri_pos = APR_ARRAY_IDX(stack, alias_depth, int);
+ if (alias_depth) {
+ /* But if the last segment of the alias does not end with '/'
+ * and the corresponding segment of the uri has parameters,
+ * we want to forward those parameters (see above for the
+ * negative pos trick/mark).
+ */
+ int pos = APR_ARRAY_IDX(stack, alias_depth - 1, int);
+ if (pos < 0) {
+ uri_pos = -pos;
+ }
+ }
+ }
+ /* If the alias lacks a trailing slash, take it from the uri (if any) */
+ if (alias[alias_pos - 1] != '/' && uri[uri_pos - 1] == '/') {
+ uri_pos--;
+ }
+
+ *urip = map;
+ return uri_pos;
+}
+
+/* Detect if an absoluteURI should be proxied or not. Note that we
+ * have to do this during this phase because later phases are
+ * "short-circuiting"... i.e. translate_names will end when the first
+ * module returns OK. So for example, if the request is something like:
+ *
+ * GET http://othervhost/cgi-bin/printenv HTTP/1.0
+ *
+ * mod_alias will notice the /cgi-bin part and ScriptAlias it and
+ * short-circuit the proxy... just because of the ordering in the
+ * configuration file.
+ */
+static int proxy_detect(request_rec *r)
+{
+ void *sconf = r->server->module_config;
+ proxy_server_conf *conf =
+ (proxy_server_conf *) ap_get_module_config(sconf, &proxy_module);
+
+ /* Ick... msvc (perhaps others) promotes ternary short results to int */
+
+ if (conf->req && r->parsed_uri.scheme) {
+ /* but it might be something vhosted */
+ if (!r->parsed_uri.hostname
+ || ap_cstr_casecmp(r->parsed_uri.scheme, ap_http_scheme(r)) != 0
+ || !ap_matches_request_vhost(r, r->parsed_uri.hostname,
+ (apr_port_t)(r->parsed_uri.port_str
+ ? r->parsed_uri.port
+ : ap_default_port(r)))) {
+ r->proxyreq = PROXYREQ_PROXY;
+ r->uri = r->unparsed_uri;
+ r->filename = apr_pstrcat(r->pool, "proxy:", r->uri, NULL);
+ r->handler = "proxy-server";
+ }
+ }
+ /* We need special treatment for CONNECT proxying: it has no scheme part */
+ else if (conf->req && r->method_number == M_CONNECT
+ && r->parsed_uri.hostname
+ && r->parsed_uri.port_str) {
+ r->proxyreq = PROXYREQ_PROXY;
+ r->uri = r->unparsed_uri;
+ r->filename = apr_pstrcat(r->pool, "proxy:", r->uri, NULL);
+ r->handler = "proxy-server";
+ }
+ return DECLINED;
+}
+
+static const char *proxy_interpolate(request_rec *r, const char *str)
+{
+ /* Interpolate an env str in a configuration string
+ * Syntax ${var} --> value_of(var)
+ * Method: replace one var, and recurse on remainder of string
+ * Nothing clever here, and crap like nested vars may do silly things
+ * but we'll at least avoid sending the unwary into a loop
+ */
+ const char *start;
+ const char *end;
+ const char *var;
+ const char *val;
+ const char *firstpart;
+
+ start = ap_strstr_c(str, "${");
+ if (start == NULL) {
+ return str;
+ }
+ end = ap_strchr_c(start+2, '}');
+ if (end == NULL) {
+ return str;
+ }
+ /* OK, this is syntax we want to interpolate. Is there such a var ? */
+ var = apr_pstrmemdup(r->pool, start+2, end-(start+2));
+ val = apr_table_get(r->subprocess_env, var);
+ firstpart = apr_pstrmemdup(r->pool, str, (start-str));
+
+ if (val == NULL) {
+ return apr_pstrcat(r->pool, firstpart,
+ proxy_interpolate(r, end+1), NULL);
+ }
+ else {
+ return apr_pstrcat(r->pool, firstpart, val,
+ proxy_interpolate(r, end+1), NULL);
+ }
+}
+static apr_array_header_t *proxy_vars(request_rec *r,
+ apr_array_header_t *hdr)
+{
+ int i;
+ apr_array_header_t *ret = apr_array_make(r->pool, hdr->nelts,
+ sizeof (struct proxy_alias));
+ struct proxy_alias *old = (struct proxy_alias *) hdr->elts;
+
+ for (i = 0; i < hdr->nelts; ++i) {
+ struct proxy_alias *newcopy = apr_array_push(ret);
+ newcopy->fake = (old[i].flags & PROXYPASS_INTERPOLATE)
+ ? proxy_interpolate(r, old[i].fake) : old[i].fake;
+ newcopy->real = (old[i].flags & PROXYPASS_INTERPOLATE)
+ ? proxy_interpolate(r, old[i].real) : old[i].real;
+ }
+ return ret;
+}
+
+PROXY_DECLARE(int) ap_proxy_trans_match(request_rec *r, struct proxy_alias *ent,
+ proxy_dir_conf *dconf)
+{
+ int len;
+ const char *fake;
+ const char *real;
+ ap_regmatch_t regm[AP_MAX_REG_MATCH];
+ ap_regmatch_t reg1[AP_MAX_REG_MATCH];
+ char *found = NULL;
+ int mismatch = 0;
+ unsigned int nocanon = ent->flags & PROXYPASS_NOCANON;
+ const char *use_uri = nocanon ? r->unparsed_uri : r->uri;
+ const char *servlet_uri = NULL;
+
+ if (dconf && (dconf->interpolate_env == 1) && (ent->flags & PROXYPASS_INTERPOLATE)) {
+ fake = proxy_interpolate(r, ent->fake);
+ real = proxy_interpolate(r, ent->real);
+ }
+ else {
+ fake = ent->fake;
+ real = ent->real;
+ }
+
+ ap_log_rerror(APLOG_MARK, APLOG_TRACE2, 0, r, APLOGNO(03461)
+ "attempting to match URI path '%s' against %s '%s' for "
+ "proxying", r->uri, (ent->regex ? "pattern" : "prefix"),
+ fake);
+
+ if (ent->regex) {
+ if (!ap_regexec(ent->regex, r->uri, AP_MAX_REG_MATCH, regm, 0)) {
+ if ((real[0] == '!') && (real[1] == '\0')) {
+ ap_log_rerror(APLOG_MARK, APLOG_TRACE1, 0, r, APLOGNO(03462)
+ "proxying is explicitly disabled for URI path "
+ "'%s'; declining", r->uri);
+ return DECLINED;
+ }
+ /* test that we haven't reduced the URI */
+ if (nocanon && ap_regexec(ent->regex, r->unparsed_uri,
+ AP_MAX_REG_MATCH, reg1, 0)) {
+ mismatch = 1;
+ use_uri = r->uri;
+ }
+ found = ap_pregsub(r->pool, real, use_uri, AP_MAX_REG_MATCH,
+ (use_uri == r->uri) ? regm : reg1);
+ if (!found) {
+ ap_log_rerror(APLOG_MARK, APLOG_CRIT, 0, r, APLOGNO(01135)
+ "Substitution in regular expression failed. "
+ "Replacement too long?");
+ return HTTP_INTERNAL_SERVER_ERROR;
+ }
+
+ /* Note: The strcmp() below catches cases where there
+ * was no regex substitution. This is so cases like:
+ *
+ * ProxyPassMatch \.gif balancer://foo
+ *
+ * will work "as expected". The upshot is that the 2
+ * directives below act the exact same way (ie: $1 is implied):
+ *
+ * ProxyPassMatch ^(/.*\.gif)$ balancer://foo
+ * ProxyPassMatch ^(/.*\.gif)$ balancer://foo$1
+ *
+ * which may be confusing.
+ */
+ if (strcmp(found, real) != 0) {
+ found = apr_pstrcat(r->pool, "proxy:", found, NULL);
+ }
+ else {
+ found = apr_pstrcat(r->pool, "proxy:", real, use_uri, NULL);
+ }
+ }
+ }
+ else {
+ if ((ent->flags & PROXYPASS_MAP_SERVLET) == PROXYPASS_MAP_SERVLET) {
+ servlet_uri = r->uri;
+ len = alias_match_servlet(r->pool, &servlet_uri, fake);
+ nocanon = 0; /* ignored since servlet's normalization applies */
+ }
+ else {
+ len = alias_match(r->uri, fake);
+ }
+
+ if (len != 0) {
+ if ((real[0] == '!') && (real[1] == '\0')) {
+ ap_log_rerror(APLOG_MARK, APLOG_TRACE1, 0, r, APLOGNO(03463)
+ "proxying is explicitly disabled for URI path "
+ "'%s'; declining", r->uri);
+ return DECLINED;
+ }
+ if (nocanon && len != alias_match(r->unparsed_uri, fake)) {
+ mismatch = 1;
+ use_uri = r->uri;
+ }
+ found = apr_pstrcat(r->pool, "proxy:", real, use_uri + len, NULL);
+ }
+ }
+ if (mismatch) {
+ /* We made a reducing transformation, so we can't safely use
+ * unparsed_uri. Safe fallback is to ignore nocanon.
+ */
+ ap_log_rerror(APLOG_MARK, APLOG_WARNING, 0, r, APLOGNO(01136)
+ "Unescaped URL path matched ProxyPass; ignoring unsafe nocanon");
+ }
+
+ if (found) {
+ /* A proxy module is assigned this URL, check whether it's interested
+ * in the request itself (e.g. proxy_wstunnel cares about Upgrade
+ * requests only, and could hand over to proxy_http otherwise).
+ */
+ int rc = proxy_run_check_trans(r, found + 6);
+ if (rc != OK && rc != DECLINED) {
+ return HTTP_CONTINUE;
+ }
+
+ r->filename = found;
+ r->handler = "proxy-server";
+ r->proxyreq = PROXYREQ_REVERSE;
+ if (nocanon && !mismatch) {
+ /* mod_proxy_http needs to be told. Different module. */
+ apr_table_setn(r->notes, "proxy-nocanon", "1");
+ }
+ if (ent->flags & PROXYPASS_NOQUERY) {
+ apr_table_setn(r->notes, "proxy-noquery", "1");
+ }
+
+ if (servlet_uri) {
+ ap_log_rerror(APLOG_MARK, APLOG_TRACE1, 0, r, APLOGNO(10248)
+ "Servlet path '%s' (%s) matches proxy handler '%s'",
+ r->uri, servlet_uri, found);
+ /* Apply servlet normalization to r->uri so that <Location> or any
+ * directory context match does not have to handle path parameters.
+ * We change r->uri in-place so that r->parsed_uri.path is updated
+ * too. Since normalized servlet_uri is necessarily shorter than
+ * the original r->uri, strcpy() is fine.
+ */
+ AP_DEBUG_ASSERT(strlen(r->uri) >= strlen(servlet_uri));
+ strcpy(r->uri, servlet_uri);
+ return DONE;
+ }
+
+ ap_log_rerror(APLOG_MARK, APLOG_TRACE1, 0, r, APLOGNO(03464)
+ "URI path '%s' matches proxy handler '%s'", r->uri,
+ found);
+ return OK;
+ }
+
+ return HTTP_CONTINUE;
+}
+
+static int proxy_trans(request_rec *r, int pre_trans)
+{
+ int i, enc;
+ struct proxy_alias *ent;
+ proxy_dir_conf *dconf;
+ proxy_server_conf *conf;
+
+ if (r->proxyreq) {
+ /* someone has already set up the proxy, it was possibly ourselves
+ * in proxy_detect (DONE will prevent further decoding of r->uri,
+ * only if proxyreq is set before pre_trans already).
+ */
+ return pre_trans ? DONE : OK;
+ }
+
+ /* In early pre_trans hook, r->uri was not manipulated yet so we are
+ * compliant with RFC1945 at this point. Otherwise, it probably isn't
+ * an issue because this is a hybrid proxy/origin server.
+ */
+
+ dconf = ap_get_module_config(r->per_dir_config, &proxy_module);
+ conf = (proxy_server_conf *) ap_get_module_config(r->server->module_config,
+ &proxy_module);
+
+ /* Always and only do PROXY_MAP_ENCODED mapping in pre_trans, when
+ * r->uri is still encoded, or we might consider for instance that
+ * a decoded sub-delim is now a delimiter (e.g. "%3B" => ';' for
+ * path parameters), which it's not.
+ */
+ if ((pre_trans && !conf->map_encoded_one)
+ || (!pre_trans && conf->map_encoded_all)) {
+ /* Fast path, nothing at this stage */
+ return DECLINED;
+ }
+
+ if ((r->unparsed_uri[0] == '*' && r->unparsed_uri[1] == '\0')
+ || !r->uri || r->uri[0] != '/') {
+ return DECLINED;
+ }
+
+ if (apr_table_get(r->subprocess_env, "no-proxy")) {
+ return DECLINED;
+ }
+
+ /* short way - this location is reverse proxied? */
+ if (dconf->alias) {
+ enc = (dconf->alias->flags & PROXYPASS_MAP_ENCODED) != 0;
+ if (!(pre_trans ^ enc)) {
+ int rv = ap_proxy_trans_match(r, dconf->alias, dconf);
+ if (rv != HTTP_CONTINUE) {
+ return rv;
+ }
+ }
+ }
+
+ /* long way - walk the list of aliases, find a match */
+ for (i = 0; i < conf->aliases->nelts; i++) {
+ ent = &((struct proxy_alias *)conf->aliases->elts)[i];
+ enc = (ent->flags & PROXYPASS_MAP_ENCODED) != 0;
+ if (!(pre_trans ^ enc)) {
+ int rv = ap_proxy_trans_match(r, ent, dconf);
+ if (rv != HTTP_CONTINUE) {
+ return rv;
+ }
+ }
+ }
+
+ return DECLINED;
+}
+
+static int proxy_pre_translate_name(request_rec *r)
+{
+ return proxy_trans(r, 1);
+}
+
+static int proxy_translate_name(request_rec *r)
+{
+ return proxy_trans(r, 0);
+}
+
+static int proxy_walk(request_rec *r)
+{
+ proxy_server_conf *sconf = ap_get_module_config(r->server->module_config,
+ &proxy_module);
+ ap_conf_vector_t *per_dir_defaults = r->per_dir_config;
+ ap_conf_vector_t **sec_proxy = (ap_conf_vector_t **) sconf->sec_proxy->elts;
+ ap_conf_vector_t *entry_config;
+ proxy_dir_conf *entry_proxy;
+ int num_sec = sconf->sec_proxy->nelts;
+ /* XXX: shouldn't we use URI here? Canonicalize it first?
+ * Pass over "proxy:" prefix
+ */
+ const char *proxyname = r->filename + 6;
+ int j;
+ apr_pool_t *rxpool = NULL;
+
+ for (j = 0; j < num_sec; ++j)
+ {
+ int nmatch = 0;
+ int i;
+ ap_regmatch_t *pmatch = NULL;
+
+ entry_config = sec_proxy[j];
+ entry_proxy = ap_get_module_config(entry_config, &proxy_module);
+
+ if (entry_proxy->r) {
+
+ if (entry_proxy->refs && entry_proxy->refs->nelts) {
+ if (!rxpool) {
+ apr_pool_create(&rxpool, r->pool);
+ apr_pool_tag(rxpool, "proxy_rxpool");
+ }
+ nmatch = entry_proxy->refs->nelts;
+ pmatch = apr_palloc(rxpool, nmatch*sizeof(ap_regmatch_t));
+ }
+
+ if (ap_regexec(entry_proxy->r, proxyname, nmatch, pmatch, 0)) {
+ continue;
+ }
+
+ for (i = 0; i < nmatch; i++) {
+ if (pmatch[i].rm_so >= 0 && pmatch[i].rm_eo >= 0 &&
+ ((const char **)entry_proxy->refs->elts)[i]) {
+ apr_table_setn(r->subprocess_env,
+ ((const char **)entry_proxy->refs->elts)[i],
+ apr_pstrndup(r->pool,
+ proxyname + pmatch[i].rm_so,
+ pmatch[i].rm_eo - pmatch[i].rm_so));
+ }
+ }
+ }
+
+ else if (
+ /* XXX: What about case insensitive matching ???
+ * Compare regex, fnmatch or string as appropriate
+ * If the entry doesn't relate, then continue
+ */
+ entry_proxy->p_is_fnmatch ? apr_fnmatch(entry_proxy->p,
+ proxyname, 0) :
+ strncmp(proxyname, entry_proxy->p,
+ strlen(entry_proxy->p))) {
+ continue;
+ }
+ per_dir_defaults = ap_merge_per_dir_configs(r->pool, per_dir_defaults,
+ entry_config);
+ }
+
+ r->per_dir_config = per_dir_defaults;
+
+ if (rxpool) {
+ apr_pool_destroy(rxpool);
+ }
+
+ return OK;
+}
+
+static int proxy_map_location(request_rec *r)
+{
+ int access_status;
+
+ if (!r->proxyreq || !r->filename || strncmp(r->filename, "proxy:", 6) != 0)
+ return DECLINED;
+
+ /* Don't let the core or mod_http map_to_storage hooks handle this,
+ * We don't need directory/file_walk, and we want to TRACE on our own.
+ */
+ if ((access_status = proxy_walk(r))) {
+ ap_die(access_status, r);
+ return access_status;
+ }
+
+ return OK;
+}
+
+/* -------------------------------------------------------------- */
+/* Fixup the filename */
+
+/*
+ * Canonicalise the URL
+ */
+static int proxy_fixup(request_rec *r)
+{
+ char *url, *p;
+ int access_status;
+ proxy_dir_conf *dconf = ap_get_module_config(r->per_dir_config,
+ &proxy_module);
+
+ if (!r->proxyreq || !r->filename || strncmp(r->filename, "proxy:", 6) != 0)
+ return DECLINED;
+
+ /* XXX: Shouldn't we try this before we run the proxy_walk? */
+ url = &r->filename[6];
+
+ if ((dconf->interpolate_env == 1) && (r->proxyreq == PROXYREQ_REVERSE)) {
+ /* create per-request copy of reverse proxy conf,
+ * and interpolate vars in it
+ */
+ proxy_req_conf *rconf = apr_palloc(r->pool, sizeof(proxy_req_conf));
+ ap_set_module_config(r->request_config, &proxy_module, rconf);
+ rconf->raliases = proxy_vars(r, dconf->raliases);
+ rconf->cookie_paths = proxy_vars(r, dconf->cookie_paths);
+ rconf->cookie_domains = proxy_vars(r, dconf->cookie_domains);
+ }
+
+ /* 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 /* has domain, or IPv4 literal */
+ || strchr(r->parsed_uri.hostname, ':') != NULL /* IPv6 literal */
+ || ap_cstr_casecmp(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_setn(r->headers_out, "Location", nuri);
+ ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r, APLOGNO(01138)
+ "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;
+ apr_int64_t 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;
+ int saved_status;
+
+ /* is this for us? */
+ if (!r->filename) {
+ return DECLINED;
+ }
+
+ if (!r->proxyreq) {
+ /* We may have forced the proxy handler via config or .htaccess */
+ if (r->handler &&
+ strncmp(r->handler, "proxy:", 6) == 0 &&
+ strncmp(r->filename, "proxy:", 6) != 0) {
+ r->proxyreq = PROXYREQ_REVERSE;
+ r->filename = apr_pstrcat(r->pool, r->handler, r->filename, NULL);
+ }
+ else {
+ return DECLINED;
+ }
+ } else if (strncmp(r->filename, "proxy:", 6) != 0) {
+ return DECLINED;
+ }
+
+ /* handle max-forwards / OPTIONS / TRACE */
+ if ((str = apr_table_get(r->headers_in, "Max-Forwards"))) {
+ char *end;
+ maxfwd = apr_strtoi64(str, &end, 10);
+ if (maxfwd < 0 || maxfwd == APR_INT64_MAX || *end) {
+ ap_log_rerror(APLOG_MARK, APLOG_WARNING, 0, r, APLOGNO(10188)
+ "Max-Forwards value '%s' could not be parsed", str);
+ return ap_proxyerror(r, HTTP_BAD_REQUEST,
+ "Max-Forwards request header could not be parsed");
+ }
+ else if (maxfwd == 0) {
+ switch (r->method_number) {
+ case M_TRACE: {
+ int access_status;
+ r->proxyreq = PROXYREQ_NONE;
+ access_status = ap_send_http_trace(r);
+ ap_die(access_status, r);
+ return OK;
+ }
+ case M_OPTIONS: {
+ int access_status;
+ r->proxyreq = PROXYREQ_NONE;
+ access_status = ap_send_http_options(r);
+ ap_die(access_status, r);
+ return OK;
+ }
+ default: {
+ return ap_proxyerror(r, HTTP_BAD_REQUEST,
+ "Max-Forwards has reached zero - proxy loop?");
+ }
+ }
+ }
+ maxfwd = (maxfwd > 0) ? maxfwd - 1 : 0;
+ }
+ else {
+ /* set configured max-forwards */
+ maxfwd = conf->maxfwd;
+ }
+ if (maxfwd >= 0) {
+ apr_table_setn(r->headers_in, "Max-Forwards",
+ apr_psprintf(r->pool, "%" APR_INT64_T_FMT, maxfwd));
+ }
+
+ if (r->method_number == M_TRACE) {
+ core_server_config *coreconf = (core_server_config *)
+ ap_get_core_module_config(sconf);
+
+ 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, APLOGNO(01139)
+ "TRACE forbidden by server configuration");
+ return HTTP_METHOD_NOT_ALLOWED;
+ }
+
+ /* 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, APLOGNO(01140)
+ "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, APLOGNO(01141)
+ "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_pstrmemdup(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) ? APLOGNO(03231) "NoProxy for %s" : APLOGNO(03232) "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;
+ }
+
+ /* Initialise worker if needed, note the shared area must be initialized by the balancer logic */
+ if (balancer) {
+ ap_proxy_initialize_worker(worker, r->server, conf->pool);
+ }
+
+ if (balancer && balancer->s->max_attempts_set && !max_attempts)
+ max_attempts = balancer->s->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 && ap_cstr_casecmp(scheme, ents[i].scheme) == 0) ||
+ (p2 != NULL &&
+ ap_cstr_casecmpn(url, ents[i].scheme,
+ strlen(ents[i].scheme)) == 0)) {
+
+ /* handle the scheme */
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01142)
+ "Trying to run scheme_handler against proxy");
+ access_status = proxy_run_scheme_handler(r, worker,
+ conf, url,
+ ents[i].hostname,
+ ents[i].port);
+
+ /* Did the scheme handler process the request? */
+ if (access_status != DECLINED) {
+ const char *cl_a;
+ apr_off_t cl;
+
+ /*
+ * An fatal error or success, so no point in
+ * retrying with a direct connection.
+ */
+ if (access_status != HTTP_BAD_GATEWAY) {
+ goto cleanup;
+ }
+
+ cl_a = apr_table_get(r->headers_in, "Content-Length");
+ if (cl_a && (!ap_parse_strict_length(&cl, cl_a)
+ || cl > 0)) {
+ /*
+ * The request body is of length > 0. We cannot
+ * retry with a direct connection since we already
+ * sent (parts of) the request body to the proxy
+ * and do not have any longer.
+ */
+ goto cleanup;
+ }
+ /*
+ * Transfer-Encoding was set as input header, so we had
+ * a request body. We cannot retry with a direct
+ * connection for the same reason as above.
+ */
+ if (apr_table_get(r->headers_in, "Transfer-Encoding")) {
+ goto cleanup;
+ }
+ }
+ }
+ }
+ }
+
+ /* 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_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01143)
+ "Running scheme %s handler (attempt %d)",
+ scheme, attempts);
+ AP_PROXY_RUN(r, worker, conf, url, attempts);
+ access_status = proxy_run_scheme_handler(r, worker, conf,
+ url, NULL, 0);
+ if (access_status == OK
+ || apr_table_get(r->notes, "proxy-error-override"))
+ 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_IGNORE_ERRORS)) {
+ worker->s->status |= PROXY_WORKER_IN_ERROR;
+ worker->s->error_time = apr_time_now();
+ }
+ 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_IGNORE_ERRORS)) {
+ worker->s->status |= PROXY_WORKER_IN_ERROR;
+ worker->s->error_time = apr_time_now();
+ }
+ }
+ 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_rerror(APLOG_MARK, APLOG_WARNING, 0, r, APLOGNO(01144)
+ "No protocol handler was valid for the URL %s "
+ "(scheme '%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, scheme);
+ access_status = HTTP_INTERNAL_SERVER_ERROR;
+ goto cleanup;
+ }
+cleanup:
+ /*
+ * Save current r->status and set it to the value of access_status which
+ * might be different (e.g. r->status could be HTTP_OK if e.g. we override
+ * the error page on the proxy or if the error was not generated by the
+ * backend itself but by the proxy e.g. a bad gateway) in order to give
+ * ap_proxy_post_request a chance to act correctly on the status code.
+ * But only do the above if access_status is not OK and not DONE, because
+ * in this case r->status might contain the true status and overwriting
+ * it with OK or DONE would be wrong.
+ */
+ if ((access_status != OK) && (access_status != DONE)) {
+ saved_status = r->status;
+ r->status = access_status;
+ ap_proxy_post_request(worker, balancer, r, conf);
+ /*
+ * Only restore r->status if it has not been changed by
+ * ap_proxy_post_request as we assume that this change was intentional.
+ */
+ if (r->status == access_status) {
+ r->status = saved_status;
+ }
+ }
+ else {
+ ap_proxy_post_request(worker, balancer, r, conf);
+ }
+
+ proxy_run_request_status(&access_status, r);
+ AP_PROXY_RUN_FINISHED(r, attempts, access_status);
+
+ 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->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->map_encoded_one = 0;
+ ps->map_encoded_all = 1;
+ ps->id = apr_psprintf(p, "p%x", 1); /* simply for storage size */
+ ps->viaopt = via_off; /* initially backward compatible with 1.3.1 */
+ ps->viaopt_set = 0; /* 0 means default */
+ ps->req = 0;
+ ps->max_balancers = 0;
+ ps->bal_persist = 0;
+ ps->inherit = 1;
+ ps->inherit_set = 0;
+ ps->ppinherit = 1;
+ ps->ppinherit_set = 0;
+ ps->bgrowth = 5;
+ ps->bgrowth_set = 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->timeout = 0;
+ ps->timeout_set = 0;
+ ps->badopt = bad_error;
+ ps->badopt_set = 0;
+ ps->source_address = NULL;
+ ps->source_address_set = 0;
+ apr_pool_create_ex(&ps->pool, p, NULL, NULL);
+ apr_pool_tag(ps->pool, "proxy_server_conf");
+
+ return ps;
+}
+
+static apr_array_header_t *merge_balancers(apr_pool_t *p,
+ apr_array_header_t *base,
+ apr_array_header_t *overrides)
+{
+ proxy_balancer *b1;
+ proxy_balancer *b2;
+ proxy_balancer tmp;
+ int x, y, found;
+ apr_array_header_t *tocopy = apr_array_make(p, 1, sizeof(proxy_balancer));
+
+ /* Check if the balancer is defined in both override and base configs:
+ * a) If it is, Create copy of base balancer and change the configuration
+ * which can be changed by ProxyPass.
+ * b) Otherwise, copy the balancer to tocopy array and merge it later.
+ */
+ b1 = (proxy_balancer *) base->elts;
+ for (y = 0; y < base->nelts; y++) {
+ b2 = (proxy_balancer *) overrides->elts;
+ for (x = 0, found = 0; x < overrides->nelts; x++) {
+ if (b1->hash.def == b2->hash.def && b1->hash.fnv == b2->hash.fnv) {
+ tmp = *b2;
+ *b2 = *b1;
+ b2->s = tmp.s;
+
+ /* For shared memory entries, b2->s belongs to override
+ * balancer, so if some entry is not set there, we have to
+ * update it according to the base balancer. */
+ if (*b2->s->sticky == 0 && *b1->s->sticky) {
+ PROXY_STRNCPY(b2->s->sticky_path, b1->s->sticky_path);
+ PROXY_STRNCPY(b2->s->sticky, b1->s->sticky);
+ }
+ if (!b2->s->sticky_separator_set
+ && b1->s->sticky_separator_set) {
+ b2->s->sticky_separator_set = b1->s->sticky_separator_set;
+ b2->s->sticky_separator = b1->s->sticky_separator;
+ }
+ if (!b2->s->timeout && b1->s->timeout) {
+ b2->s->timeout = b1->s->timeout;
+ }
+ if (!b2->s->max_attempts_set && b1->s->max_attempts_set) {
+ b2->s->max_attempts_set = b1->s->max_attempts_set;
+ b2->s->max_attempts = b1->s->max_attempts;
+ }
+ if (!b2->s->nonce_set && b1->s->nonce_set) {
+ b2->s->nonce_set = b1->s->nonce_set;
+ PROXY_STRNCPY(b2->s->nonce, b1->s->nonce);
+ }
+ if (!b2->s->sticky_force_set && b1->s->sticky_force_set) {
+ b2->s->sticky_force_set = b1->s->sticky_force_set;
+ b2->s->sticky_force = b1->s->sticky_force;
+ }
+ if (!b2->s->scolonsep_set && b1->s->scolonsep_set) {
+ b2->s->scolonsep_set = b1->s->scolonsep_set;
+ b2->s->scolonsep = b1->s->scolonsep;
+ }
+ if (!b2->s->forcerecovery_set && b1->s->forcerecovery_set) {
+ b2->s->forcerecovery_set = b1->s->forcerecovery_set;
+ b2->s->forcerecovery = b1->s->forcerecovery;
+ }
+
+ /* For non-shared memory entries, b2 is copy of b1, so we have
+ * to use tmp copy of b1 to detect changes done in override. */
+ if (tmp.lbmethod_set) {
+ b2->lbmethod_set = tmp.lbmethod_set;
+ b2->lbmethod = tmp.lbmethod;
+ }
+ if (tmp.growth_set) {
+ b2->growth_set = tmp.growth_set;
+ b2->growth = tmp.growth;
+ }
+ if (tmp.failontimeout_set) {
+ b2->failontimeout_set = tmp.failontimeout_set;
+ b2->failontimeout = tmp.failontimeout;
+ }
+ if (!apr_is_empty_array(tmp.errstatuses)) {
+ apr_array_cat(tmp.errstatuses, b2->errstatuses);
+ b2->errstatuses = tmp.errstatuses;
+ }
+
+ found = 1;
+ break;
+ }
+ b2++;
+ }
+ if (!found) {
+ *(proxy_balancer *)apr_array_push(tocopy) = *b1;
+ }
+ b1++;
+ }
+
+ return apr_array_append(p, tocopy, overrides);
+}
+
+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->inherit = (overrides->inherit_set == 0) ? base->inherit : overrides->inherit;
+ ps->inherit_set = overrides->inherit_set || base->inherit_set;
+
+ ps->ppinherit = (overrides->ppinherit_set == 0) ? base->ppinherit : overrides->ppinherit;
+ ps->ppinherit_set = overrides->ppinherit_set || base->ppinherit_set;
+
+ if (ps->ppinherit) {
+ ps->proxies = apr_array_append(p, base->proxies, overrides->proxies);
+ }
+ else {
+ ps->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);
+ if (ps->inherit || ps->ppinherit) {
+ ps->workers = apr_array_append(p, base->workers, overrides->workers);
+ ps->balancers = merge_balancers(p, base->balancers, overrides->balancers);
+ }
+ else {
+ ps->workers = overrides->workers;
+ ps->balancers = overrides->balancers;
+ }
+ ps->forward = overrides->forward ? overrides->forward : base->forward;
+ ps->reverse = overrides->reverse ? overrides->reverse : base->reverse;
+
+ ps->map_encoded_one = overrides->map_encoded_one || base->map_encoded_one;
+ ps->map_encoded_all = overrides->map_encoded_all && base->map_encoded_all;
+
+ ps->domain = (overrides->domain == NULL) ? base->domain : overrides->domain;
+ ps->id = (overrides->id == NULL) ? base->id : overrides->id;
+ ps->viaopt = (overrides->viaopt_set == 0) ? base->viaopt : overrides->viaopt;
+ ps->viaopt_set = overrides->viaopt_set || base->viaopt_set;
+ ps->req = (overrides->req_set == 0) ? base->req : overrides->req;
+ ps->req_set = overrides->req_set || base->req_set;
+ ps->bgrowth = (overrides->bgrowth_set == 0) ? base->bgrowth : overrides->bgrowth;
+ ps->bgrowth_set = overrides->bgrowth_set || base->bgrowth_set;
+ ps->max_balancers = overrides->max_balancers || base->max_balancers;
+ ps->bal_persist = overrides->bal_persist;
+ ps->recv_buffer_size = (overrides->recv_buffer_size_set == 0) ? base->recv_buffer_size : overrides->recv_buffer_size;
+ ps->recv_buffer_size_set = overrides->recv_buffer_size_set || base->recv_buffer_size_set;
+ ps->io_buffer_size = (overrides->io_buffer_size_set == 0) ? base->io_buffer_size : overrides->io_buffer_size;
+ ps->io_buffer_size_set = overrides->io_buffer_size_set || base->io_buffer_size_set;
+ ps->maxfwd = (overrides->maxfwd_set == 0) ? base->maxfwd : overrides->maxfwd;
+ ps->maxfwd_set = overrides->maxfwd_set || base->maxfwd_set;
+ ps->timeout = (overrides->timeout_set == 0) ? base->timeout : overrides->timeout;
+ ps->timeout_set = overrides->timeout_set || base->timeout_set;
+ ps->badopt = (overrides->badopt_set == 0) ? base->badopt : overrides->badopt;
+ ps->badopt_set = overrides->badopt_set || base->badopt_set;
+ ps->proxy_status = (overrides->proxy_status_set == 0) ? base->proxy_status : overrides->proxy_status;
+ ps->proxy_status_set = overrides->proxy_status_set || base->proxy_status_set;
+ ps->source_address = (overrides->source_address_set == 0) ? base->source_address : overrides->source_address;
+ ps->source_address_set = overrides->source_address_set || base->source_address_set;
+ ps->pool = base->pool;
+ return ps;
+}
+static const char *set_source_address(cmd_parms *parms, void *dummy,
+ const char *arg)
+{
+ proxy_server_conf *psf =
+ ap_get_module_config(parms->server->module_config, &proxy_module);
+ struct apr_sockaddr_t *addr;
+
+ if (APR_SUCCESS == apr_sockaddr_info_get(&addr, arg, APR_UNSPEC, 0, 0,
+ psf->pool)) {
+ psf->source_address = addr;
+ psf->source_address_set = 1;
+ }
+ else {
+ return "ProxySourceAddress invalid value";
+ }
+
+ return NULL;
+}
+
+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->error_override_codes = apr_array_make(p, 10, sizeof(int));
+ new->preserve_host_set = 0;
+ new->preserve_host = 0;
+ new->interpolate_env = -1; /* unset */
+ new->error_override = 0;
+ new->error_override_set = 0;
+ new->add_forwarded_headers = 1;
+ new->add_forwarded_headers_set = 0;
+ new->forward_100_continue = 1;
+ new->forward_100_continue_set = 0;
+
+ return (void *) new;
+}
+
+static int int_order(const void *i1, const void *i2)
+{
+ return *(const int *)i1 - *(const int *)i2;
+}
+
+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;
+ new->refs = add->refs;
+
+ /* 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->error_override_codes
+ = apr_array_append(p, base->error_override_codes, add->error_override_codes);
+ /* Keep the array sorted for binary search (since "base" and "add" are
+ * already sorted, it's only needed only if both are merged).
+ */
+ if (base->error_override_codes->nelts
+ && add->error_override_codes->nelts) {
+ qsort(new->error_override_codes->elts,
+ new->error_override_codes->nelts,
+ sizeof(int), int_order);
+ }
+ new->interpolate_env = (add->interpolate_env == -1) ? base->interpolate_env
+ : add->interpolate_env;
+ new->preserve_host = (add->preserve_host_set == 0) ? base->preserve_host
+ : add->preserve_host;
+ new->preserve_host_set = add->preserve_host_set || base->preserve_host_set;
+ new->error_override = (add->error_override_set == 0) ? base->error_override
+ : add->error_override;
+ new->error_override_set = add->error_override_set || base->error_override_set;
+ new->alias = (add->alias_set == 0) ? base->alias : add->alias;
+ new->alias_set = add->alias_set || base->alias_set;
+ new->add_forwarded_headers =
+ (add->add_forwarded_headers_set == 0) ? base->add_forwarded_headers
+ : add->add_forwarded_headers;
+ new->add_forwarded_headers_set = add->add_forwarded_headers_set
+ || base->add_forwarded_headers_set;
+ new->forward_100_continue =
+ (add->forward_100_continue_set == 0) ? base->forward_100_continue
+ : add->forward_100_continue;
+ new->forward_100_continue_set = add->forward_100_continue_set
+ || base->forward_100_continue_set;
+
+ 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);
+}
+
+PROXY_DECLARE(const char *) ap_proxy_de_socketfy(apr_pool_t *p, const char *url)
+{
+ const char *ptr;
+ /*
+ * We could be passed a URL during the config stage that contains
+ * the UDS path... ignore it
+ */
+ if (!ap_cstr_casecmpn(url, "unix:", 5) &&
+ ((ptr = ap_strchr_c(url + 5, '|')) != NULL)) {
+ /* move past the 'unix:...|' UDS path info */
+ const char *ret, *c;
+
+ ret = ptr + 1;
+ /* special case: "unix:....|scheme:" is OK, expand
+ * to "unix:....|scheme://localhost"
+ * */
+ c = ap_strchr_c(ret, ':');
+ if (c == NULL) {
+ return NULL;
+ }
+ if (c[1] == '\0') {
+ return apr_pstrcat(p, ret, "//localhost", NULL);
+ }
+ else {
+ return ret;
+ }
+ }
+ return url;
+}
+
+static const char *
+ add_pass(cmd_parms *cmd, void *dummy, const char *arg, int is_regex)
+{
+ proxy_dir_conf *dconf = (proxy_dir_conf *)dummy;
+ 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;
+ const char *real;
+ 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;
+ unsigned int worker_type = (is_regex) ? AP_PROXY_WORKER_IS_MATCH
+ : AP_PROXY_WORKER_IS_PREFIX;
+ unsigned int flags = 0;
+ const char *err;
+
+ err = ap_check_cmd_context(cmd, NOT_IN_DIRECTORY|NOT_IN_FILES);
+ if (err) {
+ return err;
+ }
+
+ while (*arg) {
+ word = ap_getword_conf(cmd->pool, &arg);
+ if (!f) {
+ if (!strcmp(word, "~")) {
+ if (is_regex) {
+ return "ProxyPassMatch invalid syntax ('~' usage).";
+ }
+ worker_type = AP_PROXY_WORKER_IS_MATCH;
+ continue;
+ }
+ f = word;
+ }
+ else if (!r) {
+ r = word;
+ }
+ else if (!strcasecmp(word,"nocanon")) {
+ flags |= PROXYPASS_NOCANON;
+ }
+ else if (!strcasecmp(word,"interpolate")) {
+ flags |= PROXYPASS_INTERPOLATE;
+ }
+ else if (!strcasecmp(word,"noquery")) {
+ flags |= PROXYPASS_NOQUERY;
+ }
+ else {
+ char *val = strchr(word, '=');
+ if (!val) {
+ if (cmd->path) {
+ if (*r == '/') {
+ return "ProxyPass|ProxyPassMatch can not have a path when defined in "
+ "a location.";
+ }
+ else {
+ return "Invalid ProxyPass|ProxyPassMatch parameter. Parameter must "
+ "be in the form 'key=value'.";
+ }
+ }
+ else {
+ return "Invalid ProxyPass|ProxyPassMatch parameter. Parameter must be "
+ "in the form 'key=value'.";
+ }
+ }
+ else {
+ *val++ = '\0';
+ }
+ if (!strcasecmp(word, "mapping")) {
+ if (!strcasecmp(val, "encoded")) {
+ flags |= PROXYPASS_MAP_ENCODED;
+ }
+ else if (!strcasecmp(val, "servlet")) {
+ flags |= PROXYPASS_MAP_SERVLET;
+ }
+ else {
+ return "unknown mapping";
+ }
+ }
+ else {
+ apr_table_setn(params, word, val);
+ }
+ }
+ }
+ if (flags & PROXYPASS_MAP_ENCODED) {
+ conf->map_encoded_one = 1;
+ }
+ else {
+ conf->map_encoded_all = 0;
+ }
+
+ if (r == NULL) {
+ return "ProxyPass|ProxyPassMatch needs a path when not defined in a location";
+ }
+ if (!(real = ap_proxy_de_socketfy(cmd->temp_pool, r))) {
+ return "ProxyPass|ProxyPassMatch uses an invalid \"unix:\" URL";
+ }
+
+
+ /* if per directory, save away the single alias */
+ if (cmd->path) {
+ dconf->alias = apr_pcalloc(cmd->pool, sizeof(struct proxy_alias));
+ dconf->alias_set = 1;
+ new = dconf->alias;
+ if (apr_fnmatch_test(f)) {
+ worker_type = AP_PROXY_WORKER_IS_MATCH;
+ }
+ }
+ /* if per server, add to the alias array */
+ else {
+ new = apr_array_push(conf->aliases);
+ }
+
+ new->fake = apr_pstrdup(cmd->pool, f);
+ new->real = apr_pstrdup(cmd->pool, real);
+ new->flags = flags;
+ if (worker_type & AP_PROXY_WORKER_IS_MATCH) {
+ new->regex = ap_pregcomp(cmd->pool, f, AP_REG_EXTENDED);
+ if (new->regex == NULL)
+ return "Regular expression could not be compiled.";
+ }
+ else {
+ new->regex = NULL;
+ }
+
+ 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 worker */
+ if (ap_proxy_valid_balancer_name(r, 9)) {
+ proxy_balancer *balancer = ap_proxy_get_balancer(cmd->pool, conf, r, 0);
+ char *fake_copy;
+
+ /*
+ * In the regex case supplying a fake URL doesn't make sense as it
+ * cannot be parsed anyway with apr_uri_parse later on in
+ * ap_proxy_define_balancer / ap_proxy_update_balancer
+ */
+ if (worker_type & AP_PROXY_WORKER_IS_MATCH) {
+ fake_copy = NULL;
+ }
+ else {
+ fake_copy = f;
+ }
+ if (!balancer) {
+ const char *err = ap_proxy_define_balancer(cmd->pool, &balancer, conf, r, fake_copy, 0);
+ if (err)
+ return apr_pstrcat(cmd->temp_pool, "ProxyPass ", err, NULL);
+ }
+ else {
+ ap_proxy_update_balancer(cmd->pool, balancer, fake_copy);
+ }
+ 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);
+ }
+ new->balancer = balancer;
+ }
+ else {
+ int reuse = 0;
+ proxy_worker *worker = ap_proxy_get_worker_ex(cmd->temp_pool, NULL,
+ conf, new->real,
+ worker_type);
+ if (!worker) {
+ const char *err;
+ err = ap_proxy_define_worker_ex(cmd->pool, &worker, NULL,
+ conf, r, worker_type);
+ if (err)
+ return apr_pstrcat(cmd->temp_pool, "ProxyPass ", err, NULL);
+
+ PROXY_COPY_CONF_PARAMS(worker, conf);
+ }
+ else {
+ reuse = 1;
+ ap_log_error(APLOG_MARK, APLOG_INFO, 0, cmd->server, APLOGNO(01145)
+ "Sharing worker '%s' instead of creating new worker '%s'",
+ ap_proxy_worker_name(cmd->pool, worker), new->real);
+ }
+
+ for (i = 0; i < arr->nelts; i++) {
+ if (reuse) {
+ ap_log_error(APLOG_MARK, APLOG_WARNING, 0, cmd->server, APLOGNO(01146)
+ "Ignoring parameter '%s=%s' for worker '%s' because of worker sharing",
+ elts[i].key, elts[i].val, ap_proxy_worker_name(cmd->pool, worker));
+ } else {
+ const char *err = set_worker_param(cmd->pool, s, 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_noregex(cmd_parms *cmd, void *dummy, const char *arg)
+{
+ return add_pass(cmd, dummy, arg, 0);
+}
+
+static const char *
+ add_pass_regex(cmd_parms *cmd, void *dummy, const char *arg)
+{
+ return add_pass(cmd, dummy, arg, 1);
+}
+
+
+static const char * add_pass_reverse(cmd_parms *cmd, void *dconf, const char *f,
+ const char *r, const char *i)
+{
+ proxy_dir_conf *conf = dconf;
+ struct proxy_alias *new;
+ const char *fake;
+ const char *real;
+ const char *interp;
+ const char *err;
+
+ err = ap_check_cmd_context(cmd, NOT_IN_DIRECTORY|NOT_IN_FILES);
+ if (err) {
+ return err;
+ }
+
+ if (cmd->path == NULL) {
+ if (r == NULL || !strcasecmp(r, "interpolate")) {
+ return "ProxyPassReverse needs a path when not defined in a location";
+ }
+ fake = f;
+ real = r;
+ interp = i;
+ }
+ else {
+ if (r && strcasecmp(r, "interpolate")) {
+ return "ProxyPassReverse can not have a path when defined in a location";
+ }
+ fake = cmd->path;
+ real = f;
+ interp = r;
+ }
+
+ new = apr_array_push(conf->raliases);
+ new->fake = fake;
+ new->real = real;
+ new->flags = interp ? PROXYPASS_INTERPOLATE : 0;
+
+ return NULL;
+}
+static const char* cookie_path(cmd_parms *cmd, void *dconf, const char *f,
+ const char *r, const char *interp)
+{
+ proxy_dir_conf *conf = dconf;
+ struct proxy_alias *new;
+
+ new = apr_array_push(conf->cookie_paths);
+ new->fake = f;
+ new->real = r;
+ new->flags = interp ? PROXYPASS_INTERPOLATE : 0;
+
+ return NULL;
+}
+static const char* cookie_domain(cmd_parms *cmd, void *dconf, const char *f,
+ const char *r, const char *interp)
+{
+ proxy_dir_conf *conf = dconf;
+ struct proxy_alias *new;
+
+ new = apr_array_push(conf->cookie_domains);
+ new->fake = f;
+ new->real = r;
+ new->flags = interp ? PROXYPASS_INTERPOLATE : 0;
+ 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;
+ break;
+ }
+ }
+
+ 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;
+}
+
+
+/* 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;
+ break;
+ }
+ }
+
+ 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, APLOGNO(03018)
+ "Parsed addr %s", inet_ntoa(New->addr));
+ ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, APLOGNO(03019)
+ "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, APLOGNO(03020)
+ "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, APLOGNO(03021)
+ "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;
+ return NULL;
+}
+
+static const char *
+ set_proxy_error_override(cmd_parms *parms, void *dconf, const char *arg)
+{
+ proxy_dir_conf *conf = dconf;
+
+ if (strcasecmp(arg, "Off") == 0) {
+ conf->error_override = 0;
+ conf->error_override_set = 1;
+ }
+ else if (strcasecmp(arg, "On") == 0) {
+ conf->error_override = 1;
+ conf->error_override_set = 1;
+ }
+ else if (conf->error_override_set == 1) {
+ int *newcode;
+ int argcode, i;
+ if (!apr_isdigit(arg[0]))
+ return "ProxyErrorOverride: status codes to intercept must be numeric";
+ if (!conf->error_override)
+ return "ProxyErrorOverride: status codes must follow a value of 'on'";
+
+ argcode = strtol(arg, NULL, 10);
+ if (!ap_is_HTTP_ERROR(argcode))
+ return "ProxyErrorOverride: status codes to intercept must be valid HTTP Status Codes >=400 && <600";
+
+ newcode = apr_array_push(conf->error_override_codes);
+ *newcode = argcode;
+
+ /* Keep the array sorted for binary search. */
+ for (i = conf->error_override_codes->nelts - 1; i > 0; --i) {
+ int *oldcode = &((int *)conf->error_override_codes->elts)[i - 1];
+ if (*oldcode <= argcode) {
+ break;
+ }
+ *newcode = *oldcode;
+ *oldcode = argcode;
+ newcode = oldcode;
+ }
+ }
+ else
+ return "ProxyErrorOverride first parameter must be one of: off | on";
+
+ return NULL;
+}
+
+static const char *
+ add_proxy_http_headers(cmd_parms *parms, void *dconf, int flag)
+{
+ proxy_dir_conf *conf = dconf;
+ conf->add_forwarded_headers = flag;
+ conf->add_forwarded_headers_set = 1;
+ return NULL;
+}
+static const char *
+ set_preserve_host(cmd_parms *parms, void *dconf, int flag)
+{
+ proxy_dir_conf *conf = dconf;
+
+ conf->preserve_host = flag;
+ conf->preserve_host_set = 1;
+ return NULL;
+}
+static const char *
+ forward_100_continue(cmd_parms *parms, void *dconf, int flag)
+{
+ proxy_dir_conf *conf = dconf;
+ conf->forward_100_continue = flag;
+ conf->forward_100_continue_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);
+ if (s < 512 && s) {
+ return "ProxyIOBufferSize must be >= 512 bytes, or 0 for system default.";
+ }
+ psf->io_buffer_size = (s ? 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);
+
+ 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 | full";
+ }
+
+ psf->proxy_status_set = 1;
+ return NULL;
+}
+
+static const char *set_bgrowth(cmd_parms *parms, void *dummy, const char *arg)
+{
+ proxy_server_conf *psf =
+ ap_get_module_config(parms->server->module_config, &proxy_module);
+
+ int growth = atoi(arg);
+ if (growth < 0 || growth > 1000) {
+ return "BalancerGrowth must be between 0 and 1000";
+ }
+ psf->bgrowth = growth;
+ psf->bgrowth_set = 1;
+
+ return NULL;
+}
+
+static const char *set_persist(cmd_parms *parms, void *dummy, int flag)
+{
+ proxy_server_conf *psf =
+ ap_get_module_config(parms->server->module_config, &proxy_module);
+
+ psf->bal_persist = flag;
+ return NULL;
+}
+
+static const char *set_inherit(cmd_parms *parms, void *dummy, int flag)
+{
+ proxy_server_conf *psf =
+ ap_get_module_config(parms->server->module_config, &proxy_module);
+
+ psf->inherit = flag;
+ psf->inherit_set = 1;
+ return NULL;
+}
+
+static const char *set_ppinherit(cmd_parms *parms, void *dummy, int flag)
+{
+ proxy_server_conf *psf =
+ ap_get_module_config(parms->server->module_config, &proxy_module);
+
+ psf->ppinherit = flag;
+ psf->ppinherit_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;
+ const char *real;
+ 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 reuse = 0;
+ int i;
+ /* XXX: Should this be NOT_IN_DIRECTORY|NOT_IN_FILES? */
+ const char *err = ap_check_cmd_context(cmd, NOT_IN_HTACCESS);
+ if (err)
+ return err;
+
+ if (cmd->path)
+ path = apr_pstrdup(cmd->pool, cmd->path);
+
+ while (*arg) {
+ char *val;
+ word = ap_getword_conf(cmd->pool, &arg);
+ val = strchr(word, '=');
+
+ if (!val) {
+ if (!path)
+ path = word;
+ else if (!name)
+ name = word;
+ else {
+ 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";
+ if (!(real = ap_proxy_de_socketfy(cmd->temp_pool, name))) {
+ return "BalancerMember uses an invalid \"unix:\" URL";
+ }
+
+ ap_str_tolower(path); /* lowercase scheme://hostname */
+
+ /* Try to find the balancer */
+ balancer = ap_proxy_get_balancer(cmd->temp_pool, conf, path, 0);
+ if (!balancer) {
+ err = ap_proxy_define_balancer(cmd->pool, &balancer, conf, path, "/", 0);
+ if (err)
+ return apr_pstrcat(cmd->temp_pool, "BalancerMember ", err, NULL);
+ }
+
+ /* Try to find existing worker */
+ worker = ap_proxy_get_worker(cmd->temp_pool, balancer, conf, real);
+ if (!worker) {
+ ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, cmd->server, APLOGNO(01147)
+ "Defining worker '%s' for balancer '%s'",
+ name, balancer->s->name);
+ if ((err = ap_proxy_define_worker(cmd->pool, &worker, balancer, conf, name, 0)) != NULL)
+ return apr_pstrcat(cmd->temp_pool, "BalancerMember ", err, NULL);
+ ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, cmd->server, APLOGNO(01148)
+ "Defined worker '%s' for balancer '%s'",
+ ap_proxy_worker_name(cmd->pool, worker), balancer->s->name);
+ PROXY_COPY_CONF_PARAMS(worker, conf);
+ } else {
+ reuse = 1;
+ ap_log_error(APLOG_MARK, APLOG_INFO, 0, cmd->server, APLOGNO(01149)
+ "Sharing worker '%s' instead of creating new worker '%s'",
+ ap_proxy_worker_name(cmd->pool, worker), name);
+ }
+ if (!worker->section_config) {
+ worker->section_config = balancer->section_config;
+ }
+
+ arr = apr_table_elts(params);
+ elts = (const apr_table_entry_t *)arr->elts;
+ for (i = 0; i < arr->nelts; i++) {
+ if (reuse) {
+ ap_log_error(APLOG_MARK, APLOG_WARNING, 0, cmd->server, APLOGNO(01150)
+ "Ignoring parameter '%s=%s' for worker '%s' because of worker sharing",
+ elts[i].key, elts[i].val, ap_proxy_worker_name(cmd->pool, worker));
+ } else {
+ err = set_worker_param(cmd->pool, cmd->server, worker, elts[i].key,
+ elts[i].val);
+ if (err)
+ return apr_pstrcat(cmd->temp_pool, "BalancerMember ", err, NULL);
+ }
+ }
+
+ 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;
+ unsigned int worker_type = 0;
+ int in_proxy_section = 0;
+ /* XXX: Should this be NOT_IN_DIRECTORY|NOT_IN_FILES? */
+ const char *err = ap_check_cmd_context(cmd, NOT_IN_HTACCESS);
+ if (err)
+ return 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';
+ if (strncasecmp(cmd->directive->parent->directive + 6,
+ "Match", 5) == 0) {
+ worker_type = AP_PROXY_WORKER_IS_MATCH;
+ }
+ else {
+ worker_type = AP_PROXY_WORKER_IS_PREFIX;
+ }
+ in_proxy_section = 1;
+ }
+ else {
+ /* Standard set directive with worker/balancer
+ * name as first param.
+ */
+ name = ap_getword_conf(cmd->temp_pool, &arg);
+ }
+
+ if (ap_proxy_valid_balancer_name(name, 9)) {
+ balancer = ap_proxy_get_balancer(cmd->pool, conf, name, 0);
+ if (!balancer) {
+ if (in_proxy_section) {
+ err = ap_proxy_define_balancer(cmd->pool, &balancer, conf, name, "/", 0);
+ if (err)
+ return apr_pstrcat(cmd->temp_pool, "ProxySet ",
+ err, NULL);
+ }
+ else
+ return apr_pstrcat(cmd->temp_pool, "ProxySet can not find '",
+ name, "' Balancer.", NULL);
+ }
+ }
+ else {
+ const char *real;
+
+ if (!(real = ap_proxy_de_socketfy(cmd->temp_pool, name))) {
+ return "ProxySet uses an invalid \"unix:\" URL";
+ }
+
+ worker = ap_proxy_get_worker_ex(cmd->temp_pool, NULL, conf,
+ real, worker_type);
+ if (!worker) {
+ if (in_proxy_section) {
+ err = ap_proxy_define_worker_ex(cmd->pool, &worker, NULL,
+ conf, name, worker_type);
+ if (err)
+ return apr_pstrcat(cmd->temp_pool, "ProxySet ",
+ err, NULL);
+ }
+ else
+ 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, cmd->server, 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;
+ char *word, *val;
+ proxy_balancer *balancer = NULL;
+ proxy_worker *worker = NULL;
+ unsigned int worker_type = AP_PROXY_WORKER_IS_PREFIX;
+ const char *err = ap_check_cmd_context(cmd, NOT_IN_DIR_CONTEXT);
+ proxy_server_conf *sconf =
+ (proxy_server_conf *) ap_get_module_config(cmd->server->module_config, &proxy_module);
+
+ 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|PROXY_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";
+ }
+ worker_type = AP_PROXY_WORKER_IS_MATCH;
+ }
+
+ /* 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);
+
+ if (r) {
+ conf->refs = apr_array_make(cmd->pool, 8, sizeof(char *));
+ ap_regname(r, conf->refs, AP_REG_MATCH, 1);
+ }
+
+ ap_add_per_proxy_conf(cmd->server, new_dir_conf);
+
+ if (*arg != '\0') {
+ if (thiscmd->cmd_data)
+ return "Multiple <ProxyMatch> arguments not (yet) supported.";
+ if (conf->p_is_fnmatch)
+ return apr_pstrcat(cmd->pool, thiscmd->name,
+ "> arguments are not supported for wildchar url.",
+ NULL);
+ if (!ap_strchr_c(conf->p, ':'))
+ return apr_pstrcat(cmd->pool, thiscmd->name,
+ "> arguments are not supported for non url.",
+ NULL);
+ if (ap_proxy_valid_balancer_name((char *)conf->p, 9)) {
+ balancer = ap_proxy_get_balancer(cmd->pool, sconf, conf->p, 0);
+ if (!balancer) {
+ err = ap_proxy_define_balancer(cmd->pool, &balancer,
+ sconf, conf->p, "/", 0);
+ if (err)
+ return apr_pstrcat(cmd->temp_pool, thiscmd->name,
+ " ", err, NULL);
+ }
+ if (!balancer->section_config) {
+ balancer->section_config = new_dir_conf;
+ }
+ }
+ else {
+ const char *real;
+
+ if (!(real = ap_proxy_de_socketfy(cmd->temp_pool, conf->p))) {
+ return "<Proxy/ProxyMatch > uses an invalid \"unix:\" URL";
+ }
+
+ worker = ap_proxy_get_worker_ex(cmd->temp_pool, NULL, sconf,
+ real, worker_type);
+ if (!worker) {
+ err = ap_proxy_define_worker_ex(cmd->pool, &worker, NULL, sconf,
+ conf->p, worker_type);
+ if (err)
+ return apr_pstrcat(cmd->temp_pool, thiscmd->name,
+ " ", err, NULL);
+ }
+ if (!worker->section_config) {
+ worker->section_config = new_dir_conf;
+ }
+ }
+ if (worker == NULL && balancer == NULL) {
+ return apr_pstrcat(cmd->pool, thiscmd->name,
+ "> arguments are supported only for workers.",
+ NULL);
+ }
+ while (*arg) {
+ word = ap_getword_conf(cmd->pool, &arg);
+ val = strchr(word, '=');
+ if (!val) {
+ return "Invalid Proxy parameter. Parameter must be "
+ "in the form 'key=value'";
+ }
+ else
+ *val++ = '\0';
+ if (worker)
+ err = set_worker_param(cmd->pool, cmd->server, worker, word, val);
+ else
+ err = set_balancer_param(sconf, cmd->pool, balancer,
+ word, val);
+ if (err)
+ return apr_pstrcat(cmd->temp_pool, thiscmd->name, " ", err, " ",
+ word, "=", val, "; ", conf->p, 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_FLAG("ProxyPassInterpolateEnv", ap_set_flag_slot_char,
+ (void*)APR_OFFSETOF(proxy_dir_conf, interpolate_env),
+ RSRC_CONF|ACCESS_CONF, "Interpolate Env Vars in reverse Proxy") ,
+ AP_INIT_RAW_ARGS("ProxyPass", add_pass_noregex, NULL, RSRC_CONF|ACCESS_CONF,
+ "a virtual path and a URL"),
+ AP_INIT_RAW_ARGS("ProxyPassMatch", add_pass_regex, NULL, RSRC_CONF|ACCESS_CONF,
+ "a virtual path and a URL"),
+ AP_INIT_TAKE123("ProxyPassReverse", add_pass_reverse, NULL, RSRC_CONF|ACCESS_CONF,
+ "a virtual path and a URL for reverse proxy behaviour"),
+ AP_INIT_TAKE23("ProxyPassReverseCookiePath", cookie_path, NULL,
+ RSRC_CONF|ACCESS_CONF, "Path rewrite rule for proxying cookies"),
+ AP_INIT_TAKE23("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_TAKE1("ProxyVia", set_via_opt, NULL, RSRC_CONF,
+ "Configure Via: proxy header header to one of: on | off | block | full"),
+ AP_INIT_ITERATE("ProxyErrorOverride", set_proxy_error_override, NULL, RSRC_CONF|ACCESS_CONF,
+ "use our error handling pages instead of the servers' we are proxying"),
+ AP_INIT_FLAG("ProxyPreserveHost", set_preserve_host, NULL, RSRC_CONF|ACCESS_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("BalancerGrowth", set_bgrowth, NULL, RSRC_CONF,
+ "Number of additional Balancers that can be added post-config"),
+ AP_INIT_FLAG("BalancerPersist", set_persist, NULL, RSRC_CONF,
+ "on if the balancer should persist changes on reboot/restart made via the Balancer Manager"),
+ AP_INIT_FLAG("BalancerInherit", set_inherit, NULL, RSRC_CONF,
+ "on if this server should inherit Balancers and Workers defined in the main server "
+ "(Setting to off recommended if using the Balancer Manager)"),
+ AP_INIT_FLAG("ProxyPassInherit", set_ppinherit, NULL, RSRC_CONF,
+ "on if this server should inherit all ProxyPass directives defined in the main server "
+ "(Setting to off recommended if using the Balancer Manager)"),
+ 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"),
+ AP_INIT_TAKE1("ProxySourceAddress", set_source_address, NULL, RSRC_CONF,
+ "Configure local source IP used for request forward"),
+ AP_INIT_FLAG("ProxyAddHeaders", add_proxy_http_headers, NULL, RSRC_CONF|ACCESS_CONF,
+ "on if X-Forwarded-* headers should be added or completed"),
+ AP_INIT_FLAG("Proxy100Continue", forward_100_continue, NULL, RSRC_CONF|ACCESS_CONF,
+ "on if 100-Continue should be forwarded to the origin server, off if the "
+ "proxy should handle it by itself"),
+ {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_engine_set) *proxy_ssl_engine = 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 (c == NULL) {
+ return ap_ssl_has_outgoing_handlers();
+ }
+ return ap_ssl_bind_outgoing(c, NULL, 1) == OK;
+}
+
+PROXY_DECLARE(int) ap_proxy_ssl_disable(conn_rec *c)
+{
+ return ap_ssl_bind_outgoing(c, NULL, 0) == OK;
+}
+
+PROXY_DECLARE(int) ap_proxy_ssl_engine(conn_rec *c,
+ ap_conf_vector_t *per_dir_config,
+ int enable)
+{
+ /*
+ * if c == NULL just check if the optional function was imported
+ * else run the optional function so ssl filters are inserted
+ */
+ if (c == NULL) {
+ return ap_ssl_has_outgoing_handlers();
+ }
+ return ap_ssl_bind_outgoing(c, per_dir_config, enable) == OK;
+}
+
+PROXY_DECLARE(int) ap_proxy_conn_is_https(conn_rec *c)
+{
+ return ap_ssl_conn_is_ssl(c);
+}
+
+PROXY_DECLARE(const char *) ap_proxy_ssl_val(apr_pool_t *p, server_rec *s,
+ conn_rec *c, request_rec *r,
+ const char *var)
+{
+ return ap_ssl_var_lookup(p, s, c, r, var);
+}
+
+static int proxy_post_config(apr_pool_t *pconf, apr_pool_t *plog,
+ apr_pool_t *ptemp, server_rec *main_s)
+{
+ server_rec *s = main_s;
+ apr_status_t rv = ap_global_mutex_create(&proxy_mutex, NULL,
+ proxy_id, NULL, s, pconf, 0);
+ if (rv != APR_SUCCESS) {
+ ap_log_perror(APLOG_MARK, APLOG_CRIT, rv, plog, APLOGNO(02478)
+ "failed to create %s mutex", proxy_id);
+ return rv;
+ }
+
+ proxy_ssl_enable = APR_RETRIEVE_OPTIONAL_FN(ssl_proxy_enable);
+ proxy_ssl_disable = APR_RETRIEVE_OPTIONAL_FN(ssl_engine_disable);
+ proxy_ssl_engine = APR_RETRIEVE_OPTIONAL_FN(ssl_engine_set);
+ ap_proxy_strmatch_path = apr_strmatch_precompile(pconf, "path=", 0);
+ ap_proxy_strmatch_domain = apr_strmatch_precompile(pconf, "domain=", 0);
+
+ for (; s; s = s->next) {
+ int rc, i;
+ proxy_server_conf *sconf =
+ ap_get_module_config(s->module_config, &proxy_module);
+ ap_conf_vector_t **sections =
+ (ap_conf_vector_t **)sconf->sec_proxy->elts;
+
+ for (i = 0; i < sconf->sec_proxy->nelts; ++i) {
+ rc = proxy_run_section_post_config(pconf, ptemp, plog,
+ s, sections[i]);
+ if (rc != OK && rc != DECLINED) {
+ return rc;
+ }
+ }
+ }
+
+ 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 (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++) {
+ if (!(flags & AP_STATUS_SHORT)) {
+ ap_rputs("<hr />\n<h1>Proxy LoadBalancer Status for ", r);
+ ap_rvputs(r, balancer->s->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);
+ if (*balancer->s->sticky) {
+ if (strcmp(balancer->s->sticky, balancer->s->sticky_path)) {
+ ap_rvputs(r, "<td>", balancer->s->sticky, " | ",
+ balancer->s->sticky_path, NULL);
+ }
+ else {
+ ap_rvputs(r, "<td>", balancer->s->sticky, NULL);
+ }
+ }
+ else {
+ ap_rputs("<td> - ", r);
+ }
+ ap_rprintf(r, "</td><td>%" APR_TIME_T_FMT "</td>",
+ apr_time_sec(balancer->s->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>Set</th><th>Acc</th><th>Busy</th><th>Wr</th><th>Rd</th>"
+ "</tr>\n", r);
+ }
+ else {
+ ap_rprintf(r, "ProxyBalancer[%d]Name: %s\n", i, balancer->s->name);
+ }
+
+ worker = (proxy_worker **)balancer->workers->elts;
+ for (n = 0; n < balancer->workers->nelts; n++) {
+ char fbuf[50];
+ if (!(flags & AP_STATUS_SHORT)) {
+ ap_rvputs(r, "<tr>\n<td>", (*worker)->s->scheme, "</td>", NULL);
+ ap_rvputs(r, "<td>", (*worker)->s->hostname_ex, "</td><td>", NULL);
+ ap_rvputs(r, ap_proxy_parse_wstatus(r->pool, *worker), NULL);
+ ap_rvputs(r, "</td><td>", (*worker)->s->route, NULL);
+ ap_rvputs(r, "</td><td>", (*worker)->s->redirect, NULL);
+ ap_rprintf(r, "</td><td>%.2f</td>", (float)((*worker)->s->lbfactor)/100.0);
+ ap_rprintf(r, "<td>%d</td>", (*worker)->s->lbset);
+ ap_rprintf(r, "<td>%" APR_SIZE_T_FMT "</td>",
+ (*worker)->s->elected);
+ ap_rprintf(r, "<td>%" APR_SIZE_T_FMT "</td><td>",
+ (*worker)->s->busy);
+ 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);
+ }
+ else {
+ ap_rprintf(r, "ProxyBalancer[%d]Worker[%d]Name: %s\n",
+ i, n, (*worker)->s->name_ex);
+ ap_rprintf(r, "ProxyBalancer[%d]Worker[%d]Status: %s\n",
+ i, n, ap_proxy_parse_wstatus(r->pool, *worker));
+ ap_rprintf(r, "ProxyBalancer[%d]Worker[%d]Elected: %"
+ APR_SIZE_T_FMT "\n",
+ i, n, (*worker)->s->elected);
+ ap_rprintf(r, "ProxyBalancer[%d]Worker[%d]Busy: %"
+ APR_SIZE_T_FMT "\n",
+ i, n, (*worker)->s->busy);
+ ap_rprintf(r, "ProxyBalancer[%d]Worker[%d]Sent: %"
+ APR_OFF_T_FMT "K\n",
+ i, n, (*worker)->s->transferred >> 10);
+ ap_rprintf(r, "ProxyBalancer[%d]Worker[%d]Rcvd: %"
+ APR_OFF_T_FMT "K\n",
+ i, n, (*worker)->s->read >> 10);
+
+ /* TODO: Add the rest of dynamic worker data */
+ }
+
+ ++worker;
+ }
+ if (!(flags & AP_STATUS_SHORT)) {
+ ap_rputs("</table>\n", r);
+ }
+ ++balancer;
+ }
+ if (!(flags & AP_STATUS_SHORT)) {
+ 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</td></tr>\n"
+ "<tr><th>Acc</th><td>Number of uses</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;
+
+ apr_status_t rv = apr_global_mutex_child_init(&proxy_mutex,
+ apr_global_mutex_lockfile(proxy_mutex),
+ p);
+ if (rv != APR_SUCCESS) {
+ ap_log_error(APLOG_MARK, APLOG_CRIT, rv, s, APLOGNO(02479)
+ "could not init proxy_mutex in child");
+ exit(1); /* Ugly, but what else? */
+ }
+
+ /* TODO */
+ 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);
+ /*
+ * NOTE: non-balancer members don't use shm at all...
+ * after all, why should they?
+ */
+ worker = (proxy_worker *)conf->workers->elts;
+ for (i = 0; i < conf->workers->nelts; i++, worker++) {
+ ap_proxy_initialize_worker(worker, s, p);
+ }
+ /* Create and initialize forward worker if defined */
+ if (conf->req_set && conf->req) {
+ proxy_worker *forward;
+ ap_proxy_define_worker(conf->pool, &forward, NULL, NULL,
+ "http://www.apache.org", 0);
+ conf->forward = forward;
+ PROXY_STRNCPY(conf->forward->s->name, "proxy:forward");
+ PROXY_STRNCPY(conf->forward->s->name_ex, "proxy:forward");
+ PROXY_STRNCPY(conf->forward->s->hostname, "*"); /* for compatibility */
+ PROXY_STRNCPY(conf->forward->s->hostname_ex, "*");
+ PROXY_STRNCPY(conf->forward->s->scheme, "*");
+ conf->forward->hash.def = conf->forward->s->hash.def =
+ ap_proxy_hashfunc(conf->forward->s->name_ex, PROXY_HASHFUNC_DEFAULT);
+ conf->forward->hash.fnv = conf->forward->s->hash.fnv =
+ ap_proxy_hashfunc(conf->forward->s->name_ex, PROXY_HASHFUNC_FNV);
+ /* Do not disable worker in case of errors */
+ conf->forward->s->status |= PROXY_WORKER_IGNORE_ERRORS;
+ /* Mark as the "generic" worker */
+ conf->forward->s->status |= PROXY_WORKER_GENERIC;
+ ap_proxy_initialize_worker(conf->forward, s, p);
+ /* Disable address cache for generic forward worker */
+ conf->forward->s->is_address_reusable = 0;
+ }
+ if (!reverse) {
+ ap_proxy_define_worker(conf->pool, &reverse, NULL, NULL,
+ "http://www.apache.org", 0);
+ PROXY_STRNCPY(reverse->s->name, "proxy:reverse");
+ PROXY_STRNCPY(reverse->s->name_ex, "proxy:reverse");
+ PROXY_STRNCPY(reverse->s->hostname, "*"); /* for compatibility */
+ PROXY_STRNCPY(reverse->s->hostname_ex, "*");
+ PROXY_STRNCPY(reverse->s->scheme, "*");
+ reverse->hash.def = reverse->s->hash.def =
+ ap_proxy_hashfunc(reverse->s->name_ex, PROXY_HASHFUNC_DEFAULT);
+ reverse->hash.fnv = reverse->s->hash.fnv =
+ ap_proxy_hashfunc(reverse->s->name_ex, PROXY_HASHFUNC_FNV);
+ /* Do not disable worker in case of errors */
+ reverse->s->status |= PROXY_WORKER_IGNORE_ERRORS;
+ /* Mark as the "generic" worker */
+ reverse->s->status |= PROXY_WORKER_GENERIC;
+ conf->reverse = reverse;
+ ap_proxy_initialize_worker(conf->reverse, s, p);
+ /* Disable address cache for generic reverse worker */
+ reverse->s->is_address_reusable = 0;
+ }
+ conf->reverse = reverse;
+ s = s->next;
+ }
+}
+
+/*
+ * This routine is called before the server processes the configuration
+ * files.
+ */
+static int proxy_pre_config(apr_pool_t *pconf, apr_pool_t *plog,
+ apr_pool_t *ptemp)
+{
+ apr_status_t rv = ap_mutex_register(pconf, proxy_id, NULL,
+ APR_LOCK_DEFAULT, 0);
+ if (rv != APR_SUCCESS) {
+ ap_log_perror(APLOG_MARK, APLOG_CRIT, rv, plog, APLOGNO(02480)
+ "failed to register %s mutex", proxy_id);
+ return 500; /* An HTTP status would be a misnomer! */
+ }
+
+ APR_OPTIONAL_HOOK(ap, status_hook, proxy_status_hook, NULL, NULL,
+ APR_HOOK_MIDDLE);
+ /* Reset workers count on graceful restart */
+ proxy_lb_workers = 0;
+ set_worker_hc_param_f = APR_RETRIEVE_OPTIONAL_FN(set_worker_hc_param);
+ 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", "mod_proxy_balancer.c",
+ "mod_proxy_hcheck.c", NULL};
+ /* handler */
+ ap_hook_handler(proxy_handler, NULL, NULL, APR_HOOK_FIRST);
+ /* filename-to-URI translation */
+ ap_hook_pre_translate_name(proxy_pre_translate_name, NULL, NULL,
+ APR_HOOK_MIDDLE);
+ ap_hook_translate_name(proxy_translate_name, 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);
+
+ /* register optional functions within proxy_util.c */
+ proxy_util_register_hooks(p);
+}
+
+AP_DECLARE_MODULE(proxy) =
+{
+ 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_HOOK_LINK(check_trans)
+)
+
+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, check_trans,
+ (request_rec *r, const char *url),
+ (r, url), 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, section_post_config,
+ (apr_pool_t *p, apr_pool_t *plog,
+ apr_pool_t *ptemp, server_rec *s,
+ ap_conf_vector_t *section_config),
+ (p, ptemp, plog, s, section_config),
+ OK, 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)