| /* 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. |
| */ |
| |
| #define CORE_PRIVATE |
| |
| #include "mod_proxy.h" |
| #include "mod_core.h" |
| #include "apr_optional.h" |
| #include "scoreboard.h" |
| #include "mod_status.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_is_https, (conn_rec *)); |
| APR_DECLARE_OPTIONAL_FN(char *, ssl_var_lookup, |
| (apr_pool_t *, server_rec *, |
| conn_rec *, request_rec *, char *)); |
| #endif |
| |
| #ifndef MAX |
| #define MAX(x,y) ((x) >= (y) ? (x) : (y)) |
| #endif |
| |
| /* |
| * 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. |
| * type_checker: set type to PROXY_MAGIC_TYPE if filename begins proxy: |
| * fix_ups: convert the URL stored in the filename to the |
| * canonical form. |
| * handler: handle proxy requests |
| */ |
| |
| /* -------------------------------------------------------------- */ |
| /* Translate the URL into a 'filename' */ |
| |
| #define PROXY_COPY_CONF_PARAMS(w, c) \ |
| do { \ |
| (w)->timeout = (c)->timeout; \ |
| (w)->timeout_set = (c)->timeout_set; \ |
| (w)->recv_buffer_size = (c)->recv_buffer_size; \ |
| (w)->recv_buffer_size_set = (c)->recv_buffer_size_set; \ |
| (w)->io_buffer_size = (c)->io_buffer_size; \ |
| (w)->io_buffer_size_set = (c)->io_buffer_size_set; \ |
| } while (0) |
| |
| static const char *set_worker_param(apr_pool_t *p, |
| 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 BalancerMamber, |
| * it is a number between 1 and 100. |
| */ |
| worker->lbfactor = atoi(val); |
| if (worker->lbfactor < 1 || worker->lbfactor > 100) |
| return "LoadFactor must be number between 1..100"; |
| } |
| 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->retry = apr_time_from_sec(ival); |
| worker->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->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->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->hmax = ival; |
| } |
| /* XXX: More inteligent 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->smax = ival; |
| } |
| else if (!strcasecmp(key, "acquire")) { |
| /* Acquire 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->acquire = timeout; |
| worker->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->timeout = apr_time_from_sec(ival); |
| worker->timeout_set = 1; |
| } |
| else if (!strcasecmp(key, "iobuffersize")) { |
| long s = atol(val); |
| worker->io_buffer_size = ((s > AP_IOBUFSIZE) ? s : AP_IOBUFSIZE); |
| worker->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->recv_buffer_size = ival; |
| worker->recv_buffer_size_set = 1; |
| } |
| else if (!strcasecmp(key, "keepalive")) { |
| if (!strcasecmp(val, "on")) |
| worker->keepalive = 1; |
| else if (!strcasecmp(val, "off")) |
| worker->keepalive = 0; |
| else |
| return "KeepAlive must be On|Off"; |
| worker->keepalive_set = 1; |
| } |
| else if (!strcasecmp(key, "disablereuse")) { |
| if (!strcasecmp(val, "on")) |
| worker->disablereuse = 1; |
| else if (!strcasecmp(val, "off")) |
| worker->disablereuse = 0; |
| else |
| return "DisableReuse must be On|Off"; |
| worker->disablereuse_set = 1; |
| } |
| else if (!strcasecmp(key, "route")) { |
| /* Worker route. |
| */ |
| if (strlen(val) > PROXY_WORKER_MAX_ROUTE_SIZ) |
| return "Route length must be < 64 characters"; |
| worker->route = apr_pstrdup(p, val); |
| } |
| else if (!strcasecmp(key, "redirect")) { |
| /* Worker redirection route. |
| */ |
| if (strlen(val) > PROXY_WORKER_MAX_ROUTE_SIZ) |
| return "Redirect length must be < 64 characters"; |
| worker->redirect = apr_pstrdup(p, val); |
| } |
| else if (!strcasecmp(key, "status")) { |
| const char *v; |
| int mode = 1; |
| /* Worker status. |
| */ |
| for (v = val; *v; v++) { |
| if (*v == '+') { |
| mode = 1; |
| v++; |
| } |
| else if (*v == '-') { |
| mode = 0; |
| v++; |
| } |
| if (*v == 'D' || *v == 'd') { |
| if (mode) |
| worker->status |= PROXY_WORKER_DISABLED; |
| else |
| worker->status &= ~PROXY_WORKER_DISABLED; |
| } |
| else if (*v == 'S' || *v == 's') { |
| if (mode) |
| worker->status |= PROXY_WORKER_STOPPED; |
| else |
| worker->status &= ~PROXY_WORKER_STOPPED; |
| } |
| else if (*v == 'E' || *v == 'e') { |
| if (mode) |
| worker->status |= PROXY_WORKER_IN_ERROR; |
| else |
| worker->status &= ~PROXY_WORKER_IN_ERROR; |
| } |
| else if (*v == 'H' || *v == 'h') { |
| if (mode) |
| worker->status |= PROXY_WORKER_HOT_STANDBY; |
| else |
| worker->status &= ~PROXY_WORKER_HOT_STANDBY; |
| } |
| else if (*v == 'I' || *v == 'i') { |
| if (mode) |
| worker->status |= PROXY_WORKER_IGNORE_ERRORS; |
| else |
| worker->status &= ~PROXY_WORKER_IGNORE_ERRORS; |
| } |
| else { |
| return "Unknown status parameter option"; |
| } |
| } |
| } |
| else if (!strcasecmp(key, "flushpackets")) { |
| if (!strcasecmp(val, "on")) |
| worker->flush_packets = flush_on; |
| else if (!strcasecmp(val, "off")) |
| worker->flush_packets = flush_off; |
| else if (!strcasecmp(val, "auto")) |
| worker->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->flush_wait = PROXY_FLUSH_WAIT; |
| else |
| worker->flush_wait = ival * 1000; /* change to microseconds */ |
| } |
| else if (!strcasecmp(key, "lbset")) { |
| ival = atoi(val); |
| if (ival < 0 || ival > 99) |
| return "lbset must be between 0 and 99"; |
| worker->lbset = ival; |
| } |
| 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->ping_timeout = timeout; |
| worker->ping_timeout_set = 1; |
| } |
| 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->conn_timeout = timeout; |
| worker->conn_timeout_set = 1; |
| } |
| 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")) { |
| /* Balancer sticky session name. |
| * Set to something like JSESSIONID or |
| * PHPSESSIONID, etc.., |
| */ |
| balancer->sticky = apr_pstrdup(p, val); |
| } |
| 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->sticky_force = 1; |
| else if (!strcasecmp(val, "off")) |
| balancer->sticky_force = 0; |
| else |
| return "failover must be On|Off"; |
| } |
| 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->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->max_attempts = ival; |
| balancer->max_attempts_set = 1; |
| } |
| else if (!strcasecmp(key, "lbmethod")) { |
| proxy_balancer_method *provider; |
| provider = ap_lookup_provider(PROXY_LBMETHOD, val, "0"); |
| if (provider) { |
| balancer->lbmethod = provider; |
| return NULL; |
| } |
| 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->scolonsep = 1; |
| else if (!strcasecmp(val, "off")) |
| balancer->scolonsep = 0; |
| else |
| return "scolonpathdelim must be On|Off"; |
| } |
| 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"; |
| } |
| else if (!strcasecmp(key, "forcerecovery")) { |
| if (!strcasecmp(val, "on")) |
| balancer->forcerecovery = 1; |
| else if (!strcasecmp(val, "off")) |
| balancer->forcerecovery = 0; |
| else |
| return "forcerecovery must be On|Off"; |
| } |
| 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; |
| } |
| |
| /* 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 |
| && !strcasecmp(r->parsed_uri.scheme, ap_http_scheme(r)) |
| && 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_pstrndup(r->pool, start+2, end-(start+2)); |
| val = apr_table_get(r->subprocess_env, var); |
| firstpart = apr_pstrndup(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; |
| } |
| static int proxy_trans(request_rec *r) |
| { |
| void *sconf = r->server->module_config; |
| proxy_server_conf *conf = |
| (proxy_server_conf *) ap_get_module_config(sconf, &proxy_module); |
| int i, len; |
| struct proxy_alias *ent = (struct proxy_alias *) conf->aliases->elts; |
| proxy_dir_conf *dconf = ap_get_module_config(r->per_dir_config, |
| &proxy_module); |
| 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; |
| |
| if (r->proxyreq) { |
| /* someone has already set up the proxy, it was possibly ourselves |
| * in proxy_detect |
| */ |
| return OK; |
| } |
| |
| if ((r->unparsed_uri[0] == '*' && r->unparsed_uri[1] == '\0') |
| || !r->uri || r->uri[0] != '/') { |
| return DECLINED; |
| } |
| |
| /* XXX: since r->uri has been manipulated already we're not really |
| * compliant with RFC1945 at this point. But this probably isn't |
| * an issue because this is a hybrid proxy/origin server. |
| */ |
| |
| for (i = 0; i < conf->aliases->nelts; i++) { |
| unsigned int nocanon = ent[i].flags & PROXYPASS_NOCANON; |
| const char *use_uri = nocanon ? r->unparsed_uri : r->uri; |
| if ((dconf->interpolate_env == 1) |
| && (ent[i].flags & PROXYPASS_INTERPOLATE)) { |
| fake = proxy_interpolate(r, ent[i].fake); |
| real = proxy_interpolate(r, ent[i].real); |
| } |
| else { |
| fake = ent[i].fake; |
| real = ent[i].real; |
| } |
| if (ent[i].regex) { |
| if (!ap_regexec(ent[i].regex, r->uri, AP_MAX_REG_MATCH, regm, 0)) { |
| if ((real[0] == '!') && (real[1] == '\0')) { |
| return DECLINED; |
| } |
| /* test that we haven't reduced the URI */ |
| if (nocanon && ap_regexec(ent[i].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); |
| /* 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 (found && strcmp(found, real)) { |
| found = apr_pstrcat(r->pool, "proxy:", found, NULL); |
| } |
| else { |
| found = apr_pstrcat(r->pool, "proxy:", real, |
| use_uri, NULL); |
| } |
| } |
| } |
| else { |
| len = alias_match(r->uri, fake); |
| |
| if (len != 0) { |
| if ((real[0] == '!') && (real[1] == '\0')) { |
| return DECLINED; |
| } |
| if (nocanon |
| && len != alias_match(r->unparsed_uri, ent[i].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, |
| "Unescaped URL path matched ProxyPass; ignoring unsafe nocanon"); |
| } |
| |
| if (found) { |
| 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"); |
| } |
| return OK; |
| } |
| } |
| return DECLINED; |
| } |
| |
| 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->server->lookup_defaults; |
| 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; |
| |
| for (j = 0; j < num_sec; ++j) |
| { |
| entry_config = sec_proxy[j]; |
| entry_proxy = ap_get_module_config(entry_config, &proxy_module); |
| |
| /* XXX: What about case insensitive matching ??? |
| * Compare regex, fnmatch or string as appropriate |
| * If the entry doesn't relate, then continue |
| */ |
| if (entry_proxy->r |
| ? ap_regexec(entry_proxy->r, proxyname, 0, NULL, 0) |
| : (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; |
| |
| 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 |
| || strcasecmp(r->parsed_uri.hostname, "localhost") == 0) |
| return DECLINED; /* host name has a dot already */ |
| |
| ref = apr_table_get(r->headers_in, "Referer"); |
| |
| /* Reassemble the request, but insert the domain after the host name */ |
| /* Note that the domain name always starts with a dot */ |
| r->parsed_uri.hostname = apr_pstrcat(r->pool, r->parsed_uri.hostname, |
| domain, NULL); |
| nuri = apr_uri_unparse(r->pool, |
| &r->parsed_uri, |
| APR_URI_UNP_REVEALPASSWORD); |
| |
| apr_table_set(r->headers_out, "Location", nuri); |
| ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r, |
| "Domain missing: %s sent to %s%s%s", r->uri, |
| apr_uri_unparse(r->pool, &r->parsed_uri, |
| APR_URI_UNP_OMITUSERINFO), |
| ref ? " from " : "", ref ? ref : ""); |
| |
| return HTTP_MOVED_PERMANENTLY; |
| } |
| |
| /* -------------------------------------------------------------- */ |
| /* Invoke handler */ |
| |
| static int proxy_handler(request_rec *r) |
| { |
| char *uri, *scheme, *p; |
| const char *p2; |
| void *sconf = r->server->module_config; |
| proxy_server_conf *conf = (proxy_server_conf *) |
| ap_get_module_config(sconf, &proxy_module); |
| apr_array_header_t *proxies = conf->proxies; |
| struct proxy_remote *ents = (struct proxy_remote *) proxies->elts; |
| int i, rc, access_status; |
| int direct_connect = 0; |
| const char *str; |
| long maxfwd; |
| proxy_balancer *balancer = NULL; |
| proxy_worker *worker = NULL; |
| int attempts = 0, max_attempts = 0; |
| struct dirconn_entry *list = (struct dirconn_entry *)conf->dirconn->elts; |
| |
| /* is this for us? */ |
| if (!r->proxyreq || !r->filename || strncmp(r->filename, "proxy:", 6) != 0) |
| return DECLINED; |
| |
| /* handle max-forwards / OPTIONS / TRACE */ |
| if ((str = apr_table_get(r->headers_in, "Max-Forwards"))) { |
| maxfwd = strtol(str, NULL, 10); |
| if (maxfwd < 1) { |
| switch (r->method_number) { |
| case M_TRACE: { |
| int access_status; |
| r->proxyreq = PROXYREQ_NONE; |
| if ((access_status = ap_send_http_trace(r))) |
| ap_die(access_status, r); |
| else |
| ap_finalize_request_protocol(r); |
| return OK; |
| } |
| case M_OPTIONS: { |
| int access_status; |
| r->proxyreq = PROXYREQ_NONE; |
| if ((access_status = ap_send_http_options(r))) |
| ap_die(access_status, r); |
| else |
| ap_finalize_request_protocol(r); |
| return OK; |
| } |
| default: { |
| return ap_proxyerror(r, HTTP_BAD_GATEWAY, |
| "Max-Forwards has reached zero - proxy loop?"); |
| } |
| } |
| } |
| maxfwd = (maxfwd > 0) ? maxfwd - 1 : 0; |
| } |
| else { |
| /* set configured max-forwards */ |
| maxfwd = conf->maxfwd; |
| } |
| if (maxfwd >= 0) { |
| apr_table_set(r->headers_in, "Max-Forwards", |
| apr_psprintf(r->pool, "%ld", maxfwd)); |
| } |
| |
| if (r->method_number == M_TRACE) { |
| core_server_config *coreconf = (core_server_config *) |
| ap_get_module_config(sconf, &core_module); |
| |
| if (coreconf->trace_enable == AP_TRACE_DISABLE) |
| { |
| /* Allow "error-notes" string to be printed by ap_send_error_response() |
| * Note; this goes nowhere, canned error response need an overhaul. |
| */ |
| apr_table_setn(r->notes, "error-notes", |
| "TRACE forbidden by server configuration"); |
| apr_table_setn(r->notes, "verbose-error-to", "*"); |
| ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, |
| "proxy: TRACE forbidden by server configuration"); |
| return HTTP_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, |
| "proxy: TRACE with request body is not allowed"); |
| return HTTP_REQUEST_ENTITY_TOO_LARGE; |
| } |
| } |
| |
| uri = r->filename + 6; |
| p = strchr(uri, ':'); |
| if (p == NULL) { |
| ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, |
| "proxy_handler no URL in %s", r->filename); |
| return HTTP_BAD_REQUEST; |
| } |
| |
| /* If the host doesn't have a domain name, add one and redirect. */ |
| if (conf->domain != NULL) { |
| rc = proxy_needsdomain(r, uri, conf->domain); |
| if (ap_is_HTTP_REDIRECT(rc)) |
| return HTTP_MOVED_PERMANENTLY; |
| } |
| |
| scheme = apr_pstrndup(r->pool, uri, p - uri); |
| /* Check URI's destination host against NoProxy hosts */ |
| /* Bypass ProxyRemote server lookup if configured as NoProxy */ |
| for (direct_connect = i = 0; i < conf->dirconn->nelts && |
| !direct_connect; i++) { |
| direct_connect = list[i].matcher(&list[i], r); |
| } |
| #if DEBUGGING |
| ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, |
| (direct_connect) ? "NoProxy for %s" : "UseProxy for %s", |
| r->uri); |
| #endif |
| |
| do { |
| char *url = uri; |
| /* Try to obtain the most suitable worker */ |
| access_status = ap_proxy_pre_request(&worker, &balancer, r, conf, &url); |
| if (access_status != OK) { |
| /* |
| * Only return if access_status is not HTTP_SERVICE_UNAVAILABLE |
| * This gives other modules the chance to hook into the |
| * request_status hook and decide what to do in this situation. |
| */ |
| if (access_status != HTTP_SERVICE_UNAVAILABLE) |
| return access_status; |
| /* |
| * Ensure that balancer is NULL if worker is NULL to prevent |
| * potential problems in the post_request hook. |
| */ |
| if (!worker) |
| balancer = NULL; |
| goto cleanup; |
| } |
| if (balancer && balancer->max_attempts_set && !max_attempts) |
| max_attempts = balancer->max_attempts; |
| /* firstly, try a proxy, unless a NoProxy directive is active */ |
| if (!direct_connect) { |
| for (i = 0; i < proxies->nelts; i++) { |
| p2 = ap_strchr_c(ents[i].scheme, ':'); /* is it a partial URL? */ |
| if (strcmp(ents[i].scheme, "*") == 0 || |
| (ents[i].use_regex && |
| ap_regexec(ents[i].regexp, url, 0, NULL, 0) == 0) || |
| (p2 == NULL && strcasecmp(scheme, ents[i].scheme) == 0) || |
| (p2 != NULL && |
| strncasecmp(url, ents[i].scheme, |
| strlen(ents[i].scheme)) == 0)) { |
| |
| /* handle the scheme */ |
| ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, r->server, |
| "Trying to run scheme_handler against proxy"); |
| access_status = proxy_run_scheme_handler(r, worker, |
| conf, url, |
| ents[i].hostname, |
| ents[i].port); |
| |
| /* Did the scheme handler process the request? */ |
| if (access_status != DECLINED) { |
| const char *cl_a; |
| char *end; |
| 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) { |
| apr_strtoff(&cl, cl_a, &end, 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. |
| */ |
| if (cl > 0) { |
| 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_error(APLOG_MARK, APLOG_DEBUG, 0, r->server, |
| "Running scheme %s handler (attempt %d)", |
| scheme, attempts); |
| access_status = proxy_run_scheme_handler(r, worker, conf, |
| url, NULL, 0); |
| if (access_status == OK) |
| break; |
| else if (access_status == HTTP_INTERNAL_SERVER_ERROR) { |
| /* Unrecoverable server error. |
| * We can not failover to another worker. |
| * Mark the worker as unusable if member of load balancer |
| */ |
| if (balancer) { |
| worker->s->status |= PROXY_WORKER_IN_ERROR; |
| 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_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_error(APLOG_MARK, APLOG_WARNING, 0, r->server, |
| "proxy: No protocol handler was valid for the URL %s. " |
| "If you are using a DSO version of mod_proxy, make sure " |
| "the proxy submodules are included in the configuration " |
| "using LoadModule.", r->uri); |
| access_status = HTTP_INTERNAL_SERVER_ERROR; |
| goto cleanup; |
| } |
| cleanup: |
| if (balancer) { |
| int post_status = proxy_run_post_request(worker, balancer, r, conf); |
| if (post_status == DECLINED) { |
| post_status = OK; /* no post_request handler available */ |
| /* TODO: recycle direct worker */ |
| } |
| } |
| |
| proxy_run_request_status(&access_status, r); |
| |
| return access_status; |
| } |
| |
| /* -------------------------------------------------------------- */ |
| /* Setup configurable data */ |
| |
| static void * create_proxy_config(apr_pool_t *p, server_rec *s) |
| { |
| proxy_server_conf *ps = apr_pcalloc(p, sizeof(proxy_server_conf)); |
| |
| ps->sec_proxy = apr_array_make(p, 10, sizeof(ap_conf_vector_t *)); |
| ps->proxies = apr_array_make(p, 10, sizeof(struct proxy_remote)); |
| ps->aliases = apr_array_make(p, 10, sizeof(struct proxy_alias)); |
| ps->noproxies = apr_array_make(p, 10, sizeof(struct noproxy_entry)); |
| ps->dirconn = apr_array_make(p, 10, sizeof(struct dirconn_entry)); |
| ps->allowed_connect_ports = apr_array_make(p, 10, sizeof(int)); |
| ps->workers = apr_array_make(p, 10, sizeof(proxy_worker)); |
| ps->balancers = apr_array_make(p, 10, sizeof(proxy_balancer)); |
| ps->forward = NULL; |
| ps->reverse = NULL; |
| ps->domain = NULL; |
| ps->viaopt = via_off; /* initially backward compatible with 1.3.1 */ |
| ps->viaopt_set = 0; /* 0 means default */ |
| ps->req = 0; |
| ps->req_set = 0; |
| ps->recv_buffer_size = 0; /* this default was left unset for some reason */ |
| ps->recv_buffer_size_set = 0; |
| ps->io_buffer_size = AP_IOBUFSIZE; |
| ps->io_buffer_size_set = 0; |
| ps->maxfwd = DEFAULT_MAX_FORWARDS; |
| ps->maxfwd_set = 0; |
| ps->error_override = 0; |
| ps->error_override_set = 0; |
| ps->preserve_host_set = 0; |
| ps->preserve_host = 0; |
| ps->timeout = 0; |
| ps->timeout_set = 0; |
| ps->badopt = bad_error; |
| ps->badopt_set = 0; |
| ps->pool = p; |
| |
| return ps; |
| } |
| |
| static void * merge_proxy_config(apr_pool_t *p, void *basev, void *overridesv) |
| { |
| proxy_server_conf *ps = apr_pcalloc(p, sizeof(proxy_server_conf)); |
| proxy_server_conf *base = (proxy_server_conf *) basev; |
| proxy_server_conf *overrides = (proxy_server_conf *) overridesv; |
| |
| ps->proxies = apr_array_append(p, base->proxies, overrides->proxies); |
| ps->sec_proxy = apr_array_append(p, base->sec_proxy, overrides->sec_proxy); |
| ps->aliases = apr_array_append(p, base->aliases, overrides->aliases); |
| ps->noproxies = apr_array_append(p, base->noproxies, overrides->noproxies); |
| ps->dirconn = apr_array_append(p, base->dirconn, overrides->dirconn); |
| ps->allowed_connect_ports = apr_array_append(p, base->allowed_connect_ports, overrides->allowed_connect_ports); |
| ps->workers = apr_array_append(p, base->workers, overrides->workers); |
| ps->balancers = apr_array_append(p, base->balancers, overrides->balancers); |
| ps->forward = overrides->forward ? overrides->forward : base->forward; |
| ps->reverse = overrides->reverse ? overrides->reverse : base->reverse; |
| |
| ps->domain = (overrides->domain == NULL) ? base->domain : overrides->domain; |
| ps->viaopt = (overrides->viaopt_set == 0) ? base->viaopt : overrides->viaopt; |
| ps->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->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->error_override = (overrides->error_override_set == 0) ? base->error_override : overrides->error_override; |
| ps->error_override_set = overrides->error_override_set || base->error_override_set; |
| ps->preserve_host = (overrides->preserve_host_set == 0) ? base->preserve_host : overrides->preserve_host; |
| ps->preserve_host_set = overrides->preserve_host_set || base->preserve_host_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->pool = p; |
| return ps; |
| } |
| |
| static void *create_proxy_dir_config(apr_pool_t *p, char *dummy) |
| { |
| proxy_dir_conf *new = |
| (proxy_dir_conf *) apr_pcalloc(p, sizeof(proxy_dir_conf)); |
| |
| /* Filled in by proxysection, when applicable */ |
| |
| /* Put these in the dir config so they work inside <Location> */ |
| new->raliases = apr_array_make(p, 10, sizeof(struct proxy_alias)); |
| new->cookie_paths = apr_array_make(p, 10, sizeof(struct proxy_alias)); |
| new->cookie_domains = apr_array_make(p, 10, sizeof(struct proxy_alias)); |
| new->cookie_path_str = apr_strmatch_precompile(p, "path=", 0); |
| new->cookie_domain_str = apr_strmatch_precompile(p, "domain=", 0); |
| new->interpolate_env = -1; /* unset */ |
| |
| return (void *) new; |
| } |
| |
| static void *merge_proxy_dir_config(apr_pool_t *p, void *basev, void *addv) |
| { |
| proxy_dir_conf *new = (proxy_dir_conf *) apr_pcalloc(p, sizeof(proxy_dir_conf)); |
| proxy_dir_conf *add = (proxy_dir_conf *) addv; |
| proxy_dir_conf *base = (proxy_dir_conf *) basev; |
| |
| new->p = add->p; |
| new->p_is_fnmatch = add->p_is_fnmatch; |
| new->r = add->r; |
| |
| /* Put these in the dir config so they work inside <Location> */ |
| new->raliases = apr_array_append(p, base->raliases, add->raliases); |
| new->cookie_paths |
| = apr_array_append(p, base->cookie_paths, add->cookie_paths); |
| new->cookie_domains |
| = apr_array_append(p, base->cookie_domains, add->cookie_domains); |
| new->cookie_path_str = base->cookie_path_str; |
| new->cookie_domain_str = base->cookie_domain_str; |
| new->interpolate_env = (add->interpolate_env == -1) ? base->interpolate_env |
| : add->interpolate_env; |
| new->ftp_directory_charset = add->ftp_directory_charset ? |
| add->ftp_directory_charset : |
| base->ftp_directory_charset; |
| return new; |
| } |
| |
| |
| static const char * |
| add_proxy(cmd_parms *cmd, void *dummy, const char *f1, const char *r1, int regex) |
| { |
| server_rec *s = cmd->server; |
| proxy_server_conf *conf = |
| (proxy_server_conf *) ap_get_module_config(s->module_config, &proxy_module); |
| struct proxy_remote *new; |
| char *p, *q; |
| char *r, *f, *scheme; |
| ap_regex_t *reg = NULL; |
| int port; |
| |
| r = apr_pstrdup(cmd->pool, r1); |
| scheme = apr_pstrdup(cmd->pool, r1); |
| f = apr_pstrdup(cmd->pool, f1); |
| p = strchr(r, ':'); |
| if (p == NULL || p[1] != '/' || p[2] != '/' || p[3] == '\0') { |
| if (regex) |
| return "ProxyRemoteMatch: Bad syntax for a remote proxy server"; |
| else |
| return "ProxyRemote: Bad syntax for a remote proxy server"; |
| } |
| else { |
| scheme[p-r] = 0; |
| } |
| q = strchr(p + 3, ':'); |
| if (q != NULL) { |
| if (sscanf(q + 1, "%u", &port) != 1 || port > 65535) { |
| if (regex) |
| return "ProxyRemoteMatch: Bad syntax for a remote proxy server (bad port number)"; |
| else |
| return "ProxyRemote: Bad syntax for a remote proxy server (bad port number)"; |
| } |
| *q = '\0'; |
| } |
| else |
| port = -1; |
| *p = '\0'; |
| if (regex) { |
| reg = ap_pregcomp(cmd->pool, f, AP_REG_EXTENDED); |
| if (!reg) |
| return "Regular expression for ProxyRemoteMatch could not be compiled."; |
| } |
| else |
| if (strchr(f, ':') == NULL) |
| ap_str_tolower(f); /* lowercase scheme */ |
| ap_str_tolower(p + 3); /* lowercase hostname */ |
| |
| if (port == -1) { |
| port = apr_uri_port_of_scheme(scheme); |
| } |
| |
| new = apr_array_push(conf->proxies); |
| new->scheme = f; |
| new->protocol = r; |
| new->hostname = p + 3; |
| new->port = port; |
| new->regexp = reg; |
| new->use_regex = regex; |
| return NULL; |
| } |
| |
| static const char * |
| add_proxy_noregex(cmd_parms *cmd, void *dummy, const char *f1, const char *r1) |
| { |
| return add_proxy(cmd, dummy, f1, r1, 0); |
| } |
| |
| static const char * |
| add_proxy_regex(cmd_parms *cmd, void *dummy, const char *f1, const char *r1) |
| { |
| return add_proxy(cmd, dummy, f1, r1, 1); |
| } |
| |
| static const char * |
| add_pass(cmd_parms *cmd, void *dummy, const char *arg, int is_regex) |
| { |
| server_rec *s = cmd->server; |
| proxy_server_conf *conf = |
| (proxy_server_conf *) ap_get_module_config(s->module_config, &proxy_module); |
| struct proxy_alias *new; |
| char *f = cmd->path; |
| char *r = NULL; |
| char *word; |
| apr_table_t *params = apr_table_make(cmd->pool, 5); |
| const apr_array_header_t *arr; |
| const apr_table_entry_t *elts; |
| int i; |
| int use_regex = is_regex; |
| unsigned int flags = 0; |
| |
| while (*arg) { |
| word = ap_getword_conf(cmd->pool, &arg); |
| if (!f) { |
| if (!strcmp(word, "~")) { |
| if (is_regex) { |
| return "ProxyPassMatch invalid syntax ('~' usage)."; |
| } |
| use_regex = 1; |
| 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 { |
| 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'; |
| apr_table_setn(params, word, val); |
| } |
| }; |
| |
| if (r == NULL) |
| return "ProxyPass|ProxyPassMatch needs a path when not defined in a location"; |
| |
| new = apr_array_push(conf->aliases); |
| new->fake = apr_pstrdup(cmd->pool, f); |
| new->real = apr_pstrdup(cmd->pool, r); |
| new->flags = flags; |
| if (use_regex) { |
| 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 (strncasecmp(r, "balancer:", 9) == 0) { |
| proxy_balancer *balancer = ap_proxy_get_balancer(cmd->pool, conf, r); |
| if (!balancer) { |
| const char *err = ap_proxy_add_balancer(&balancer, |
| cmd->pool, |
| conf, r); |
| if (err) |
| return apr_pstrcat(cmd->temp_pool, "ProxyPass ", err, NULL); |
| } |
| for (i = 0; i < arr->nelts; i++) { |
| const char *err = set_balancer_param(conf, cmd->pool, balancer, elts[i].key, |
| elts[i].val); |
| if (err) |
| return apr_pstrcat(cmd->temp_pool, "ProxyPass ", err, NULL); |
| } |
| } |
| else { |
| proxy_worker *worker = ap_proxy_get_worker(cmd->temp_pool, conf, r); |
| if (!worker) { |
| const char *err = ap_proxy_add_worker(&worker, cmd->pool, conf, r); |
| if (err) |
| return apr_pstrcat(cmd->temp_pool, "ProxyPass ", err, NULL); |
| } else { |
| ap_log_error(APLOG_MARK, APLOG_INFO, 0, cmd->server, |
| "worker %s already used by another worker", worker->name); |
| } |
| PROXY_COPY_CONF_PARAMS(worker, conf); |
| |
| for (i = 0; i < arr->nelts; i++) { |
| const char *err = set_worker_param(cmd->pool, worker, elts[i].key, |
| elts[i].val); |
| if (err) |
| return apr_pstrcat(cmd->temp_pool, "ProxyPass ", err, NULL); |
| } |
| } |
| return NULL; |
| } |
| |
| static const char * |
| add_pass_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; |
| |
| if (cmd->path == NULL) { |
| fake = f; |
| real = r; |
| interp = i; |
| if (r == NULL || !strcasecmp(r, "interpolate")) { |
| return "ProxyPassReverse needs a path when not defined in a location"; |
| } |
| } |
| else { |
| fake = cmd->path; |
| real = f; |
| if (r && strcasecmp(r, "interpolate")) { |
| return "ProxyPassReverse can not have a path when defined in a location"; |
| } |
| 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; |
| } |
| } |
| |
| if (!found) { |
| new = apr_array_push(conf->noproxies); |
| new->name = arg; |
| if (APR_SUCCESS == apr_sockaddr_info_get(&addr, new->name, APR_UNSPEC, 0, 0, parms->pool)) { |
| new->addr = addr; |
| } |
| else { |
| new->addr = NULL; |
| } |
| } |
| return NULL; |
| } |
| |
| /* |
| * Set the ports CONNECT can use |
| */ |
| static const char * |
| set_allowed_ports(cmd_parms *parms, void *dummy, const char *arg) |
| { |
| server_rec *s = parms->server; |
| proxy_server_conf *conf = |
| ap_get_module_config(s->module_config, &proxy_module); |
| int *New; |
| |
| if (!apr_isdigit(arg[0])) |
| return "AllowCONNECT: port number must be numeric"; |
| |
| New = apr_array_push(conf->allowed_connect_ports); |
| *New = atoi(arg); |
| return NULL; |
| } |
| |
| /* Similar to set_proxy_exclude(), but defining directly connected hosts, |
| * which should never be accessed via the configured ProxyRemote servers |
| */ |
| static const char * |
| set_proxy_dirconn(cmd_parms *parms, void *dummy, const char *arg) |
| { |
| server_rec *s = parms->server; |
| proxy_server_conf *conf = |
| ap_get_module_config(s->module_config, &proxy_module); |
| struct dirconn_entry *New; |
| struct dirconn_entry *list = (struct dirconn_entry *) conf->dirconn->elts; |
| int found = 0; |
| int i; |
| |
| /* Don't duplicate entries */ |
| for (i = 0; i < conf->dirconn->nelts; i++) { |
| if (strcasecmp(arg, list[i].name) == 0) |
| found = 1; |
| } |
| |
| if (!found) { |
| New = apr_array_push(conf->dirconn); |
| New->name = apr_pstrdup(parms->pool, arg); |
| New->hostaddr = NULL; |
| |
| if (ap_proxy_is_ipaddr(New, parms->pool)) { |
| #if DEBUGGING |
| ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, |
| "Parsed addr %s", inet_ntoa(New->addr)); |
| ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, |
| "Parsed mask %s", inet_ntoa(New->mask)); |
| #endif |
| } |
| else if (ap_proxy_is_domainname(New, parms->pool)) { |
| ap_str_tolower(New->name); |
| #if DEBUGGING |
| ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, |
| "Parsed domain %s", New->name); |
| #endif |
| } |
| else if (ap_proxy_is_hostname(New, parms->pool)) { |
| ap_str_tolower(New->name); |
| #if DEBUGGING |
| ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, |
| "Parsed host %s", New->name); |
| #endif |
| } |
| else { |
| ap_proxy_is_word(New, parms->pool); |
| #if DEBUGGING |
| fprintf(stderr, "Parsed word %s\n", New->name); |
| #endif |
| } |
| } |
| return NULL; |
| } |
| |
| static const char * |
| set_proxy_domain(cmd_parms *parms, void *dummy, const char *arg) |
| { |
| proxy_server_conf *psf = |
| ap_get_module_config(parms->server->module_config, &proxy_module); |
| |
| if (arg[0] != '.') |
| return "ProxyDomain: domain name must start with a dot."; |
| |
| psf->domain = arg; |
| return NULL; |
| } |
| |
| static const char * |
| set_proxy_req(cmd_parms *parms, void *dummy, int flag) |
| { |
| proxy_server_conf *psf = |
| ap_get_module_config(parms->server->module_config, &proxy_module); |
| |
| psf->req = flag; |
| psf->req_set = 1; |
| |
| if (flag && !psf->forward) { |
| psf->forward = ap_proxy_create_worker(parms->pool); |
| psf->forward->name = "proxy:forward"; |
| psf->forward->hostname = "*"; |
| psf->forward->scheme = "*"; |
| } |
| return NULL; |
| } |
| |
| static const char * |
| set_proxy_error_override(cmd_parms *parms, void *dummy, int flag) |
| { |
| proxy_server_conf *psf = |
| ap_get_module_config(parms->server->module_config, &proxy_module); |
| |
| psf->error_override = flag; |
| psf->error_override_set = 1; |
| return NULL; |
| } |
| static const char * |
| set_preserve_host(cmd_parms *parms, void *dummy, int flag) |
| { |
| proxy_server_conf *psf = |
| ap_get_module_config(parms->server->module_config, &proxy_module); |
| |
| psf->preserve_host = flag; |
| psf->preserve_host_set = 1; |
| return NULL; |
| } |
| |
| static const char * |
| set_recv_buffer_size(cmd_parms *parms, void *dummy, const char *arg) |
| { |
| proxy_server_conf *psf = |
| ap_get_module_config(parms->server->module_config, &proxy_module); |
| int s = atoi(arg); |
| if (s < 512 && s != 0) { |
| return "ProxyReceiveBufferSize must be >= 512 bytes, or 0 for system default."; |
| } |
| |
| psf->recv_buffer_size = s; |
| psf->recv_buffer_size_set = 1; |
| return NULL; |
| } |
| |
| static const char * |
| set_io_buffer_size(cmd_parms *parms, void *dummy, const char *arg) |
| { |
| proxy_server_conf *psf = |
| ap_get_module_config(parms->server->module_config, &proxy_module); |
| long s = atol(arg); |
| |
| psf->io_buffer_size = ((s > AP_IOBUFSIZE) ? s : AP_IOBUFSIZE); |
| psf->io_buffer_size_set = 1; |
| return NULL; |
| } |
| |
| static const char * |
| set_max_forwards(cmd_parms *parms, void *dummy, const char *arg) |
| { |
| proxy_server_conf *psf = |
| ap_get_module_config(parms->server->module_config, &proxy_module); |
| long s = atol(arg); |
| |
| 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 *add_member(cmd_parms *cmd, void *dummy, const char *arg) |
| { |
| server_rec *s = cmd->server; |
| proxy_server_conf *conf = |
| ap_get_module_config(s->module_config, &proxy_module); |
| proxy_balancer *balancer; |
| proxy_worker *worker; |
| char *path = cmd->path; |
| char *name = NULL; |
| char *word; |
| apr_table_t *params = apr_table_make(cmd->pool, 5); |
| const apr_array_header_t *arr; |
| const apr_table_entry_t *elts; |
| int i; |
| |
| if (cmd->path) |
| path = apr_pstrdup(cmd->pool, cmd->path); |
| while (*arg) { |
| word = ap_getword_conf(cmd->pool, &arg); |
| if (!path) |
| path = word; |
| else if (!name) |
| name = word; |
| else { |
| char *val = strchr(word, '='); |
| if (!val) |
| if (cmd->path) |
| return "BalancerMember can not have a balancer name when defined in a location"; |
| else |
| return "Invalid BalancerMember parameter. Parameter must " |
| "be in the form 'key=value'"; |
| else |
| *val++ = '\0'; |
| apr_table_setn(params, word, val); |
| } |
| } |
| if (!path) |
| return "BalancerMember must define balancer name when outside <Proxy > section"; |
| if (!name) |
| return "BalancerMember must define remote proxy server"; |
| |
| ap_str_tolower(path); /* lowercase scheme://hostname */ |
| |
| /* Try to find existing worker */ |
| worker = ap_proxy_get_worker(cmd->temp_pool, conf, name); |
| if (!worker) { |
| const char *err; |
| if ((err = ap_proxy_add_worker(&worker, cmd->pool, conf, name)) != NULL) |
| return apr_pstrcat(cmd->temp_pool, "BalancerMember ", err, NULL); |
| } else { |
| ap_log_error(APLOG_MARK, APLOG_INFO, 0, cmd->server, |
| "worker %s already used by another worker", worker->name); |
| } |
| PROXY_COPY_CONF_PARAMS(worker, conf); |
| |
| arr = apr_table_elts(params); |
| elts = (const apr_table_entry_t *)arr->elts; |
| for (i = 0; i < arr->nelts; i++) { |
| const char *err = set_worker_param(cmd->pool, worker, elts[i].key, |
| elts[i].val); |
| if (err) |
| return apr_pstrcat(cmd->temp_pool, "BalancerMember ", err, NULL); |
| } |
| /* Try to find the balancer */ |
| balancer = ap_proxy_get_balancer(cmd->temp_pool, conf, path); |
| if (!balancer) { |
| const char *err = ap_proxy_add_balancer(&balancer, |
| cmd->pool, |
| conf, path); |
| if (err) |
| return apr_pstrcat(cmd->temp_pool, "BalancerMember ", err, NULL); |
| } |
| /* Add the worker to the load balancer */ |
| ap_proxy_add_worker_to_balancer(cmd->pool, balancer, worker); |
| return NULL; |
| } |
| |
| static const char * |
| set_proxy_param(cmd_parms *cmd, void *dummy, const char *arg) |
| { |
| server_rec *s = cmd->server; |
| proxy_server_conf *conf = |
| (proxy_server_conf *) ap_get_module_config(s->module_config, &proxy_module); |
| char *name = NULL; |
| char *word, *val; |
| proxy_balancer *balancer = NULL; |
| proxy_worker *worker = NULL; |
| const char *err; |
| int in_proxy_section = 0; |
| |
| 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'; |
| in_proxy_section = 1; |
| } |
| else { |
| /* Standard set directive with worker/balancer |
| * name as first param. |
| */ |
| name = ap_getword_conf(cmd->temp_pool, &arg); |
| } |
| |
| if (strncasecmp(name, "balancer:", 9) == 0) { |
| balancer = ap_proxy_get_balancer(cmd->pool, conf, name); |
| if (!balancer) { |
| if (in_proxy_section) { |
| err = ap_proxy_add_balancer(&balancer, |
| cmd->pool, |
| conf, name); |
| 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 { |
| worker = ap_proxy_get_worker(cmd->temp_pool, conf, name); |
| if (!worker) { |
| if (in_proxy_section) { |
| err = ap_proxy_add_worker(&worker, cmd->pool, |
| conf, name); |
| 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, 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 const char *set_ftp_directory_charset(cmd_parms *cmd, void *dconf, |
| const char *arg) |
| { |
| proxy_dir_conf *conf = dconf; |
| |
| conf->ftp_directory_charset = arg; |
| 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; |
| |
| const char *err = ap_check_cmd_context(cmd, |
| NOT_IN_DIR_LOC_FILE|NOT_IN_LIMIT); |
| 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; |
| |
| 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"; |
| } |
| } |
| |
| /* initialize our config and fetch it */ |
| conf = ap_set_config_vectors(cmd->server, new_dir_conf, cmd->path, |
| &proxy_module, cmd->pool); |
| |
| errmsg = ap_walk_config(cmd->directive->first_child, cmd, new_dir_conf); |
| if (errmsg != NULL) |
| return errmsg; |
| |
| conf->r = r; |
| conf->p = cmd->path; |
| conf->p_is_fnmatch = apr_fnmatch_test(conf->p); |
| |
| ap_add_per_proxy_conf(cmd->server, new_dir_conf); |
| |
| if (*arg != '\0') { |
| 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 (strncasecmp(conf->p, "balancer:", 9) == 0) { |
| balancer = ap_proxy_get_balancer(cmd->pool, sconf, conf->p); |
| if (!balancer) { |
| err = ap_proxy_add_balancer(&balancer, |
| cmd->pool, |
| sconf, conf->p); |
| if (err) |
| return apr_pstrcat(cmd->temp_pool, thiscmd->name, |
| " ", err, NULL); |
| } |
| } |
| else { |
| worker = ap_proxy_get_worker(cmd->temp_pool, sconf, |
| conf->p); |
| if (!worker) { |
| err = ap_proxy_add_worker(&worker, cmd->pool, |
| sconf, conf->p); |
| if (err) |
| return apr_pstrcat(cmd->temp_pool, thiscmd->name, |
| " ", err, NULL); |
| } |
| } |
| 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, 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, |
| (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_ITERATE("AllowCONNECT", set_allowed_ports, NULL, RSRC_CONF, |
| "A list of ports which CONNECT may connect to"), |
| AP_INIT_TAKE1("ProxyVia", set_via_opt, NULL, RSRC_CONF, |
| "Configure Via: proxy header header to one of: on | off | block | full"), |
| AP_INIT_FLAG("ProxyErrorOverride", set_proxy_error_override, NULL, RSRC_CONF, |
| "use our error handling pages instead of the servers' we are proxying"), |
| AP_INIT_FLAG("ProxyPreserveHost", set_preserve_host, NULL, RSRC_CONF, |
| "on if we should preserve host header while proxying"), |
| AP_INIT_TAKE1("ProxyTimeout", set_proxy_timeout, NULL, RSRC_CONF, |
| "Set the timeout (in seconds) for a proxied connection. " |
| "This overrides the server timeout"), |
| AP_INIT_TAKE1("ProxyBadHeader", set_bad_opt, NULL, RSRC_CONF, |
| "How to handle bad header line in response: IsError | Ignore | StartBody"), |
| AP_INIT_RAW_ARGS("BalancerMember", add_member, NULL, RSRC_CONF|ACCESS_CONF, |
| "A balancer name and scheme with list of params"), |
| AP_INIT_TAKE1("ProxyStatus", set_status_opt, NULL, RSRC_CONF, |
| "Configure Status: proxy status to one of: on | off | full"), |
| AP_INIT_RAW_ARGS("ProxySet", set_proxy_param, NULL, RSRC_CONF|ACCESS_CONF, |
| "A balancer or worker name with list of params"), |
| AP_INIT_TAKE1("ProxyFtpDirCharset", set_ftp_directory_charset, NULL, |
| RSRC_CONF|ACCESS_CONF, "Define the character set for proxied FTP listings"), |
| {NULL} |
| }; |
| |
| static APR_OPTIONAL_FN_TYPE(ssl_proxy_enable) *proxy_ssl_enable = NULL; |
| static APR_OPTIONAL_FN_TYPE(ssl_engine_disable) *proxy_ssl_disable = NULL; |
| static APR_OPTIONAL_FN_TYPE(ssl_is_https) *proxy_is_https = NULL; |
| static APR_OPTIONAL_FN_TYPE(ssl_var_lookup) *proxy_ssl_val = NULL; |
| |
| PROXY_DECLARE(int) ap_proxy_ssl_enable(conn_rec *c) |
| { |
| /* |
| * if c == NULL just check if the optional function was imported |
| * else run the optional function so ssl filters are inserted |
| */ |
| if (proxy_ssl_enable) { |
| return c ? proxy_ssl_enable(c) : 1; |
| } |
| |
| return 0; |
| } |
| |
| PROXY_DECLARE(int) ap_proxy_ssl_disable(conn_rec *c) |
| { |
| if (proxy_ssl_disable) { |
| return proxy_ssl_disable(c); |
| } |
| |
| return 0; |
| } |
| |
| PROXY_DECLARE(int) ap_proxy_conn_is_https(conn_rec *c) |
| { |
| if (proxy_is_https) { |
| return proxy_is_https(c); |
| } |
| else |
| return 0; |
| } |
| |
| PROXY_DECLARE(const char *) ap_proxy_ssl_val(apr_pool_t *p, server_rec *s, |
| conn_rec *c, request_rec *r, |
| const char *var) |
| { |
| if (proxy_ssl_val) { |
| /* XXX Perhaps the casting useless */ |
| return (const char *)proxy_ssl_val(p, s, c, r, (char *)var); |
| } |
| else |
| return NULL; |
| } |
| |
| static int proxy_post_config(apr_pool_t *pconf, apr_pool_t *plog, |
| apr_pool_t *ptemp, server_rec *s) |
| { |
| |
| proxy_ssl_enable = APR_RETRIEVE_OPTIONAL_FN(ssl_proxy_enable); |
| proxy_ssl_disable = APR_RETRIEVE_OPTIONAL_FN(ssl_engine_disable); |
| proxy_is_https = APR_RETRIEVE_OPTIONAL_FN(ssl_is_https); |
| proxy_ssl_val = APR_RETRIEVE_OPTIONAL_FN(ssl_var_lookup); |
| |
| return OK; |
| } |
| |
| /* |
| * proxy Extension to mod_status |
| */ |
| static int proxy_status_hook(request_rec *r, int flags) |
| { |
| int i, n; |
| void *sconf = r->server->module_config; |
| proxy_server_conf *conf = (proxy_server_conf *) |
| ap_get_module_config(sconf, &proxy_module); |
| proxy_balancer *balancer = NULL; |
| proxy_worker *worker = NULL; |
| |
| if (flags & AP_STATUS_SHORT || conf->balancers->nelts == 0 || |
| conf->proxy_status == status_off) |
| return OK; |
| |
| balancer = (proxy_balancer *)conf->balancers->elts; |
| for (i = 0; i < conf->balancers->nelts; i++) { |
| ap_rputs("<hr />\n<h1>Proxy LoadBalancer Status for ", r); |
| ap_rvputs(r, balancer->name, "</h1>\n\n", NULL); |
| ap_rputs("\n\n<table border=\"0\"><tr>" |
| "<th>SSes</th><th>Timeout</th><th>Method</th>" |
| "</tr>\n<tr>", r); |
| if (balancer->sticky) { |
| ap_rvputs(r, "<td>", balancer->sticky, NULL); |
| } |
| else { |
| ap_rputs("<td> - ", r); |
| } |
| ap_rprintf(r, "</td><td>%" APR_TIME_T_FMT "</td>", |
| apr_time_sec(balancer->timeout)); |
| ap_rprintf(r, "<td>%s</td>\n", |
| balancer->lbmethod->name); |
| ap_rputs("</table>\n", r); |
| ap_rputs("\n\n<table border=\"0\"><tr>" |
| "<th>Sch</th><th>Host</th><th>Stat</th>" |
| "<th>Route</th><th>Redir</th>" |
| "<th>F</th><th>Set</th><th>Acc</th><th>Wr</th><th>Rd</th>" |
| "</tr>\n", r); |
| |
| worker = (proxy_worker *)balancer->workers->elts; |
| for (n = 0; n < balancer->workers->nelts; n++) { |
| char fbuf[50]; |
| ap_rvputs(r, "<tr>\n<td>", worker->scheme, "</td>", NULL); |
| ap_rvputs(r, "<td>", worker->hostname, "</td><td>", NULL); |
| if (worker->s->status & PROXY_WORKER_DISABLED) |
| ap_rputs("Dis", r); |
| else if (worker->s->status & PROXY_WORKER_IN_ERROR) |
| ap_rputs("Err", r); |
| else if (worker->s->status & PROXY_WORKER_INITIALIZED) |
| ap_rputs("Ok", r); |
| else |
| ap_rputs("-", r); |
| ap_rvputs(r, "</td><td>", worker->s->route, NULL); |
| ap_rvputs(r, "</td><td>", worker->s->redirect, NULL); |
| ap_rprintf(r, "</td><td>%d</td>", worker->s->lbfactor); |
| ap_rprintf(r, "<td>%d</td>", worker->s->lbset); |
| ap_rprintf(r, "<td>%" APR_SIZE_T_FMT "</td><td>", worker->s->elected); |
| ap_rputs(apr_strfsize(worker->s->transferred, fbuf), r); |
| ap_rputs("</td><td>", r); |
| ap_rputs(apr_strfsize(worker->s->read, fbuf), r); |
| ap_rputs("</td>\n", r); |
| |
| /* TODO: Add the rest of dynamic worker data */ |
| ap_rputs("</tr>\n", r); |
| |
| ++worker; |
| } |
| ap_rputs("</table>\n", r); |
| ++balancer; |
| } |
| ap_rputs("<hr /><table>\n" |
| "<tr><th>SSes</th><td>Sticky session name</td></tr>\n" |
| "<tr><th>Timeout</th><td>Balancer Timeout</td></tr>\n" |
| "<tr><th>Sch</th><td>Connection scheme</td></tr>\n" |
| "<tr><th>Host</th><td>Backend Hostname</td></tr>\n" |
| "<tr><th>Stat</th><td>Worker status</td></tr>\n" |
| "<tr><th>Route</th><td>Session Route</td></tr>\n" |
| "<tr><th>Redir</th><td>Session Route Redirection</td></tr>\n" |
| "<tr><th>F</th><td>Load Balancer Factor in %</td></tr>\n" |
| "<tr><th>Acc</th><td>Number of requests</td></tr>\n" |
| "<tr><th>Wr</th><td>Number of bytes transferred</td></tr>\n" |
| "<tr><th>Rd</th><td>Number of bytes read</td></tr>\n" |
| "</table>", r); |
| |
| return OK; |
| } |
| |
| static void child_init(apr_pool_t *p, server_rec *s) |
| { |
| proxy_worker *reverse = NULL; |
| |
| while (s) { |
| void *sconf = s->module_config; |
| proxy_server_conf *conf; |
| proxy_worker *worker; |
| int i; |
| |
| conf = (proxy_server_conf *)ap_get_module_config(sconf, &proxy_module); |
| /* Initialize worker's shared scoreboard data */ |
| worker = (proxy_worker *)conf->workers->elts; |
| for (i = 0; i < conf->workers->nelts; i++) { |
| ap_proxy_initialize_worker_share(conf, worker, s); |
| ap_proxy_initialize_worker(worker, s); |
| worker++; |
| } |
| /* Initialize forward worker if defined */ |
| if (conf->forward) { |
| ap_proxy_initialize_worker_share(conf, conf->forward, s); |
| ap_proxy_initialize_worker(conf->forward, s); |
| /* Do not disable worker in case of errors */ |
| conf->forward->s->status |= PROXY_WORKER_IGNORE_ERRORS; |
| /* Disable address cache for generic forward worker */ |
| conf->forward->is_address_reusable = 0; |
| } |
| if (!reverse) { |
| reverse = ap_proxy_create_worker(p); |
| reverse->name = "proxy:reverse"; |
| reverse->hostname = "*"; |
| reverse->scheme = "*"; |
| ap_proxy_initialize_worker_share(conf, reverse, s); |
| ap_proxy_initialize_worker(reverse, s); |
| /* Do not disable worker in case of errors */ |
| reverse->s->status |= PROXY_WORKER_IGNORE_ERRORS; |
| /* Disable address cache for generic reverse worker */ |
| reverse->is_address_reusable = 0; |
| } |
| conf->reverse = reverse; |
| s = s->next; |
| } |
| } |
| |
| /* |
| * This routine is called before the server processes the configuration |
| * files. There is no return value. |
| */ |
| static int proxy_pre_config(apr_pool_t *pconf, apr_pool_t *plog, |
| apr_pool_t *ptemp) |
| { |
| APR_OPTIONAL_HOOK(ap, status_hook, proxy_status_hook, NULL, NULL, |
| APR_HOOK_MIDDLE); |
| /* Reset workers count on gracefull restart */ |
| proxy_lb_workers = 0; |
| return OK; |
| } |
| |
| static void register_hooks(apr_pool_t *p) |
| { |
| /* fixup before mod_rewrite, so that the proxied url will not |
| * escaped accidentally by our fixup. |
| */ |
| static const char * const aszSucc[]={ "mod_rewrite.c", NULL }; |
| /* Only the mpm_winnt has child init hook handler. |
| * make sure that we are called after the mpm |
| * initializes. |
| */ |
| static const char *const aszPred[] = { "mpm_winnt.c", NULL}; |
| |
| APR_REGISTER_OPTIONAL_FN(ap_proxy_lb_workers); |
| /* handler */ |
| ap_hook_handler(proxy_handler, NULL, NULL, APR_HOOK_FIRST); |
| /* filename-to-URI translation */ |
| ap_hook_translate_name(proxy_trans, aszSucc, NULL, APR_HOOK_FIRST); |
| /* walk <Proxy > entries and suppress default TRACE behavior */ |
| ap_hook_map_to_storage(proxy_map_location, NULL,NULL, APR_HOOK_FIRST); |
| /* fixups */ |
| ap_hook_fixups(proxy_fixup, NULL, aszSucc, APR_HOOK_FIRST); |
| /* post read_request handling */ |
| ap_hook_post_read_request(proxy_detect, NULL, NULL, APR_HOOK_FIRST); |
| /* pre config handling */ |
| ap_hook_pre_config(proxy_pre_config, NULL, NULL, APR_HOOK_MIDDLE); |
| /* post config handling */ |
| ap_hook_post_config(proxy_post_config, NULL, NULL, APR_HOOK_MIDDLE); |
| /* child init handling */ |
| ap_hook_child_init(child_init, aszPred, NULL, APR_HOOK_MIDDLE); |
| |
| } |
| |
| module AP_MODULE_DECLARE_DATA proxy_module = |
| { |
| STANDARD20_MODULE_STUFF, |
| create_proxy_dir_config, /* create per-directory config structure */ |
| merge_proxy_dir_config, /* merge per-directory config structures */ |
| create_proxy_config, /* create per-server config structure */ |
| merge_proxy_config, /* merge per-server config structures */ |
| proxy_cmds, /* command table */ |
| register_hooks |
| }; |
| |
| APR_HOOK_STRUCT( |
| APR_HOOK_LINK(scheme_handler) |
| APR_HOOK_LINK(canon_handler) |
| APR_HOOK_LINK(pre_request) |
| APR_HOOK_LINK(post_request) |
| APR_HOOK_LINK(request_status) |
| ) |
| |
| APR_IMPLEMENT_EXTERNAL_HOOK_RUN_FIRST(proxy, PROXY, int, scheme_handler, |
| (request_rec *r, proxy_worker *worker, |
| proxy_server_conf *conf, |
| char *url, const char *proxyhost, |
| apr_port_t proxyport),(r,worker,conf, |
| url,proxyhost,proxyport),DECLINED) |
| APR_IMPLEMENT_EXTERNAL_HOOK_RUN_FIRST(proxy, PROXY, int, canon_handler, |
| (request_rec *r, char *url),(r, |
| url),DECLINED) |
| APR_IMPLEMENT_EXTERNAL_HOOK_RUN_FIRST(proxy, PROXY, int, pre_request, ( |
| proxy_worker **worker, |
| proxy_balancer **balancer, |
| request_rec *r, |
| proxy_server_conf *conf, |
| char **url),(worker,balancer, |
| r,conf,url),DECLINED) |
| APR_IMPLEMENT_EXTERNAL_HOOK_RUN_FIRST(proxy, PROXY, int, post_request, |
| (proxy_worker *worker, |
| proxy_balancer *balancer, |
| request_rec *r, |
| proxy_server_conf *conf),(worker, |
| balancer,r,conf),DECLINED) |
| APR_IMPLEMENT_OPTIONAL_HOOK_RUN_ALL(proxy, PROXY, int, fixups, |
| (request_rec *r), (r), |
| OK, DECLINED) |
| APR_IMPLEMENT_OPTIONAL_HOOK_RUN_ALL(proxy, PROXY, int, request_status, |
| (int *status, request_rec *r), |
| (status, r), |
| OK, DECLINED) |