diff options
Diffstat (limited to 'rubbos/app/httpd-2.0.64/modules/proxy/mod_proxy.c')
| -rw-r--r-- | rubbos/app/httpd-2.0.64/modules/proxy/mod_proxy.c | 1181 |
1 files changed, 0 insertions, 1181 deletions
diff --git a/rubbos/app/httpd-2.0.64/modules/proxy/mod_proxy.c b/rubbos/app/httpd-2.0.64/modules/proxy/mod_proxy.c deleted file mode 100644 index 84d5fb10..00000000 --- a/rubbos/app/httpd-2.0.64/modules/proxy/mod_proxy.c +++ /dev/null @@ -1,1181 +0,0 @@ -/* Licensed to the Apache Software Foundation (ASF) under one or more - * contributor license agreements. See the NOTICE file distributed with - * this work for additional information regarding copyright ownership. - * The ASF licenses this file to You under the Apache License, Version 2.0 - * (the "License"); you may not use this file except in compliance with - * the License. You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#define CORE_PRIVATE - -#include "mod_proxy.h" -#include "mod_core.h" - -#include "apr_optional.h" - -#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' */ - -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; - - while (aliasp < end_fakename) { - 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; - } - } - - /* 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; - - 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_method(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 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; - - if (r->proxyreq) { - /* someone has already set up the proxy, it was possibly ourselves - * in proxy_detect - */ - return OK; - } - - /* 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++) { - len = alias_match(r->uri, ent[i].fake); - - if (len > 0) { - if ((ent[i].real[0] == '!' ) && ( ent[i].real[1] == 0 )) { - return DECLINED; - } - - r->filename = apr_pstrcat(r->pool, "proxy:", ent[i].real, - (r->uri + len ), NULL); - r->handler = "proxy-server"; - r->proxyreq = PROXYREQ_REVERSE; - 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; - - 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]; - - /* 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 *url, *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; - - /* is this for us? */ - if (!r->proxyreq || !r->filename || strncmp(r->filename, "proxy:", 6) != 0) - return DECLINED; - - /* handle max-forwards / OPTIONS / TRACE */ - if ((str = apr_table_get(r->headers_in, "Max-Forwards"))) { - maxfwd = strtol(str, NULL, 10); - if (maxfwd < 1) { - switch (r->method_number) { - case M_TRACE: { - int access_status; - r->proxyreq = PROXYREQ_NONE; - if ((access_status = ap_send_http_trace(r))) - ap_die(access_status, r); - else - ap_finalize_request_protocol(r); - return OK; - } - case M_OPTIONS: { - int access_status; - r->proxyreq = PROXYREQ_NONE; - if ((access_status = ap_send_http_options(r))) - ap_die(access_status, r); - else - ap_finalize_request_protocol(r); - return OK; - } - default: { - return ap_proxyerror(r, HTTP_BAD_GATEWAY, - "Max-Forwards has reached zero - proxy loop?"); - } - } - } - maxfwd = (maxfwd > 0) ? maxfwd - 1 : 0; - } - else { - /* set configured max-forwards */ - maxfwd = conf->maxfwd; - } - apr_table_set(r->headers_in, "Max-Forwards", - apr_psprintf(r->pool, "%ld", (maxfwd > 0) ? maxfwd : 0)); - - if (r->method_number == M_TRACE) { - core_server_config *coreconf = (core_server_config *) - ap_get_module_config(sconf, &core_module); - - if (coreconf->trace_enable == AP_TRACE_DISABLE) - { - /* Allow "error-notes" string to be printed by ap_send_error_response() - * Note; this goes nowhere, canned error response need an overhaul. - */ - apr_table_setn(r->notes, "error-notes", - "TRACE forbidden by server configuration"); - apr_table_setn(r->notes, "verbose-error-to", "*"); - ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, - "proxy: TRACE forbidden by server configuration"); - return HTTP_FORBIDDEN; - } - - /* Can't test ap_should_client_block, we aren't ready to send - * the client a 100 Continue response till the connection has - * been established - */ - if (coreconf->trace_enable != AP_TRACE_EXTENDED - && (r->read_length || r->read_chunked || r->remaining)) - { - /* Allow "error-notes" string to be printed by ap_send_error_response() - * Note; this goes nowhere, canned error response need an overhaul. - */ - apr_table_setn(r->notes, "error-notes", - "TRACE with request body is not allowed"); - apr_table_setn(r->notes, "verbose-error-to", "*"); - ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, - "proxy: TRACE with request body is not allowed"); - return HTTP_REQUEST_ENTITY_TOO_LARGE; - } - } - - url = r->filename + 6; - p = strchr(url, ':'); - if (p == NULL) - 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, url, conf->domain); - if (ap_is_HTTP_REDIRECT(rc)) - return HTTP_MOVED_PERMANENTLY; - } - - *p = '\0'; - scheme = apr_pstrdup(r->pool, url); - *p = ':'; - - /* Check URI's destination host against NoProxy hosts */ - /* Bypass ProxyRemote server lookup if configured as NoProxy */ - /* we only know how to handle communication to a proxy via http */ - /*if (strcasecmp(scheme, "http") == 0) */ - { - int ii; - struct dirconn_entry *list = (struct dirconn_entry *) conf->dirconn->elts; - - for (direct_connect = ii = 0; ii < conf->dirconn->nelts && !direct_connect; ii++) { - direct_connect = list[ii].matcher(&list[ii], r); - } -#if DEBUGGING - ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, - (direct_connect) ? "NoProxy for %s" : "UseProxy for %s", - r->uri); -#endif - } - - /* 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, conf, url, ents[i].hostname, ents[i].port); - - /* an error or success */ - if (access_status != DECLINED && access_status != HTTP_BAD_GATEWAY) { - return access_status; - } - /* we failed to talk to the upstream proxy */ - } - } - } - - /* otherwise, try it direct */ - /* N.B. what if we're behind a firewall, where we must use a proxy or - * give up?? - */ - - /* handle the scheme */ - ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, r->server, - "Trying to run scheme_handler"); - access_status = proxy_run_scheme_handler(r, conf, url, NULL, 0); - 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); - return HTTP_FORBIDDEN; - } - 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->raliases = 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->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; - 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->raliases = apr_array_append(p, base->raliases, overrides->raliases); - 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->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; - - 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 */ - - 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; - 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; - 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, 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 *f, const char *r) -{ - 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; - if (r!=NULL && cmd->path == NULL ) { - new = apr_array_push(conf->aliases); - new->fake = f; - new->real = r; - } else if (r==NULL && cmd->path != NULL) { - new = apr_array_push(conf->aliases); - new->fake = cmd->path; - new->real = f; - } else { - if ( r== NULL) - return "ProxyPass needs a path when not defined in a location"; - else - return "ProxyPass can not have a path when defined in a location"; - } - - return NULL; -} - -static const char * - add_pass_reverse(cmd_parms *cmd, void *dummy, const char *f, const char *r) -{ - server_rec *s = cmd->server; - proxy_server_conf *conf; - struct proxy_alias *new; - - conf = (proxy_server_conf *)ap_get_module_config(s->module_config, - &proxy_module); - if (r!=NULL && cmd->path == NULL ) { - new = apr_array_push(conf->raliases); - new->fake = f; - new->real = r; - } else if (r==NULL && cmd->path != NULL) { - new = apr_array_push(conf->raliases); - new->fake = cmd->path; - new->real = f; - } else { - if ( r == NULL) - return "ProxyPassReverse needs a path when not defined in a location"; - else - return "ProxyPassReverse can not have a path when defined in a location"; - } - - return NULL; -} - -static const char * - 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 (apr_strnatcasecmp(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; - return NULL; -} -static const char * - set_proxy_error_override(cmd_parms *parms, void *dummy, int flag) -{ - proxy_server_conf *psf = - ap_get_module_config(parms->server->module_config, &proxy_module); - - psf->error_override = flag; - psf->error_override_set = 1; - return NULL; -} -static const char * - set_preserve_host(cmd_parms *parms, void *dummy, int flag) -{ - proxy_server_conf *psf = - ap_get_module_config(parms->server->module_config, &proxy_module); - - psf->preserve_host = flag; - psf->preserve_host_set = 1; - return NULL; -} - -static const char * - set_recv_buffer_size(cmd_parms *parms, void *dummy, const char *arg) -{ - proxy_server_conf *psf = - ap_get_module_config(parms->server->module_config, &proxy_module); - int s = atoi(arg); - if (s < 512 && s != 0) { - return "ProxyReceiveBufferSize must be >= 512 bytes, or 0 for system default."; - } - - psf->recv_buffer_size = s; - psf->recv_buffer_size_set = 1; - return NULL; -} - -static const char * - set_io_buffer_size(cmd_parms *parms, void *dummy, const char *arg) -{ - proxy_server_conf *psf = - ap_get_module_config(parms->server->module_config, &proxy_module); - long s = atol(arg); - - psf->io_buffer_size = ((s > AP_IOBUFSIZE) ? s : AP_IOBUFSIZE); - psf->io_buffer_size_set = 1; - return NULL; -} - -static const char * - set_max_forwards(cmd_parms *parms, void *dummy, const char *arg) -{ - proxy_server_conf *psf = - ap_get_module_config(parms->server->module_config, &proxy_module); - long s = atol(arg); - if (s < 0) { - return "ProxyMaxForwards must be greater or equal to zero.."; - } - - psf->maxfwd = s; - psf->maxfwd_set = 1; - return NULL; -} -static const char* - set_proxy_timeout(cmd_parms *parms, void *dummy, const char *arg) -{ - proxy_server_conf *psf = - ap_get_module_config(parms->server->module_config, &proxy_module); - int timeout; - - timeout=atoi(arg); - if (timeout<1) { - return "Proxy Timeout must be at least 1 second."; - } - psf->timeout_set=1; - psf->timeout=apr_time_from_sec(timeout); - - return NULL; -} - -static const char* - set_via_opt(cmd_parms *parms, void *dummy, const char *arg) -{ - proxy_server_conf *psf = - ap_get_module_config(parms->server->module_config, &proxy_module); - - if (strcasecmp(arg, "Off") == 0) - psf->viaopt = via_off; - else if (strcasecmp(arg, "On") == 0) - psf->viaopt = via_on; - else if (strcasecmp(arg, "Block") == 0) - psf->viaopt = via_block; - else if (strcasecmp(arg, "Full") == 0) - psf->viaopt = via_full; - else { - return "ProxyVia must be one of: " - "off | on | full | block"; - } - - psf->viaopt_set = 1; - return NULL; -} - -static const char* - set_bad_opt(cmd_parms *parms, void *dummy, const char *arg) -{ - proxy_server_conf *psf = - ap_get_module_config(parms->server->module_config, &proxy_module); - - if (strcasecmp(arg, "IsError") == 0) - psf->badopt = bad_error; - else if (strcasecmp(arg, "Ignore") == 0) - psf->badopt = bad_ignore; - else if (strcasecmp(arg, "StartBody") == 0) - psf->badopt = bad_body; - else { - return "ProxyBadHeader must be one of: " - "IsError | Ignore | StartBody"; - } - - psf->badopt_set = 1; - return NULL; -} - -static const char* set_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); - regex_t *r = NULL; - const command_rec *thiscmd = cmd->cmd; - - const char *err = ap_check_cmd_context(cmd, - NOT_IN_DIR_LOC_FILE|NOT_IN_LIMIT); - if (err != NULL) { - return err; - } - - if (endp == NULL) { - return apr_pstrcat(cmd->pool, cmd->cmd->name, - "> directive missing closing '>'", NULL); - } - - arg=apr_pstrndup(cmd->pool, arg, endp-arg); - - if (!arg) { - if (thiscmd->cmd_data) - return "<ProxyMatch > block must specify a path"; - else - return "<Proxy > block must specify a path"; - } - - cmd->path = ap_getword_conf(cmd->pool, &arg); - cmd->override = OR_ALL|ACCESS_CONF; - - if (!strncasecmp(cmd->path, "proxy:", 6)) - cmd->path += 6; - - /* XXX Ignore case? What if we proxy a case-insensitive server?!? - * While we are at it, shouldn't we also canonicalize the entire - * scheme? See proxy_fixup() - */ - if (thiscmd->cmd_data) { /* <ProxyMatch> */ - r = ap_pregcomp(cmd->pool, cmd->path, REG_EXTENDED); - if (!r) { - return "Regex could not be compiled"; - } - } - else if (!strcmp(cmd->path, "~")) { - cmd->path = ap_getword_conf(cmd->pool, &arg); - if (!cmd->path) - return "<Proxy ~ > block must specify a path"; - if (strncasecmp(cmd->path, "proxy:", 6)) - cmd->path += 6; - r = ap_pregcomp(cmd->pool, cmd->path, REG_EXTENDED); - if (!r) { - return "Regex could not be compiled"; - } - } - - /* initialize our config and fetch it */ - conf = ap_set_config_vectors(cmd->server, new_dir_conf, cmd->path, - &proxy_module, cmd->pool); - - errmsg = ap_walk_config(cmd->directive->first_child, cmd, new_dir_conf); - if (errmsg != NULL) - return errmsg; - - conf->r = r; - conf->p = cmd->path; - conf->p_is_fnmatch = apr_fnmatch_test(conf->p); - - ap_add_per_proxy_conf(cmd->server, new_dir_conf); - - if (*arg != '\0') { - return apr_pstrcat(cmd->pool, "Multiple ", thiscmd->name, - "> arguments not (yet) supported.", NULL); - } - - cmd->path = old_path; - cmd->override = old_overrides; - - return NULL; -} - -static const command_rec proxy_cmds[] = -{ - AP_INIT_RAW_ARGS("<Proxy", proxysection, NULL, RSRC_CONF, - "Container for directives affecting resources located in the proxied " - "location"), - AP_INIT_RAW_ARGS("<ProxyMatch", proxysection, (void*)1, RSRC_CONF, - "Container for directives affecting resources located in the proxied " - "location, in regular expression syntax"), - AP_INIT_FLAG("ProxyRequests", set_proxy_req, NULL, RSRC_CONF, - "on if the true proxy requests should be accepted"), - AP_INIT_TAKE2("ProxyRemote", add_proxy_noregex, NULL, RSRC_CONF, - "a scheme, partial URL or '*' and a proxy server"), - AP_INIT_TAKE2("ProxyRemoteMatch", add_proxy_regex, NULL, RSRC_CONF, - "a regex pattern and a proxy server"), - AP_INIT_TAKE12("ProxyPass", add_pass, NULL, RSRC_CONF|ACCESS_CONF, - "a virtual path and a URL"), - AP_INIT_TAKE12("ProxyPassReverse", add_pass_reverse, NULL, RSRC_CONF|ACCESS_CONF, - "a virtual path and a URL for reverse proxy behaviour"), - AP_INIT_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_TAKE1("ProxyFtpDirCharset", set_ftp_directory_charset, NULL, - RSRC_CONF|ACCESS_CONF, "Define the character set for proxied FTP listings"), - {NULL} -}; - -APR_DECLARE_OPTIONAL_FN(int, ssl_proxy_enable, (conn_rec *)); -APR_DECLARE_OPTIONAL_FN(int, ssl_engine_disable, (conn_rec *)); - -static APR_OPTIONAL_FN_TYPE(ssl_proxy_enable) *proxy_ssl_enable = NULL; -static APR_OPTIONAL_FN_TYPE(ssl_engine_disable) *proxy_ssl_disable = 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; -} - -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); - - 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 }; - - /* handler */ - ap_hook_handler(proxy_handler, NULL, NULL, APR_HOOK_FIRST); - /* filename-to-URI translation */ - ap_hook_translate_name(proxy_trans, NULL, 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); - /* post config handling */ - ap_hook_post_config(proxy_post_config, NULL, 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_IMPLEMENT_EXTERNAL_HOOK_RUN_FIRST(proxy, PROXY, int, scheme_handler, - (request_rec *r, proxy_server_conf *conf, - char *url, const char *proxyhost, - apr_port_t proxyport),(r,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_OPTIONAL_HOOK_RUN_ALL(proxy, PROXY, int, fixups, - (request_rec *r), (r), - OK, DECLINED) |