| /* ==================================================================== |
| * The Apache Software License, Version 1.1 |
| * |
| * Copyright (c) 2000-2001 The Apache Software Foundation. All rights |
| * reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3. The end-user documentation included with the redistribution, |
| * if any, must include the following acknowledgment: |
| * "This product includes software developed by the |
| * Apache Software Foundation (http://www.apache.org/)." |
| * Alternately, this acknowledgment may appear in the software itself, |
| * if and wherever such third-party acknowledgments normally appear. |
| * |
| * 4. The names "Apache" and "Apache Software Foundation" must |
| * not be used to endorse or promote products derived from this |
| * software without prior written permission. For written |
| * permission, please contact apache@apache.org. |
| * |
| * 5. Products derived from this software may not be called "Apache", |
| * nor may "Apache" appear in their name, without prior written |
| * permission of the Apache Software Foundation. |
| * |
| * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR |
| * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
| * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * ==================================================================== |
| * |
| * This software consists of voluntary contributions made by many |
| * individuals on behalf of the Apache Software Foundation. For more |
| * information on the Apache Software Foundation, please see |
| * <http://www.apache.org/>. |
| * |
| * Portions of this software are based upon public domain software |
| * originally written at the National Center for Supercomputing Applications, |
| * University of Illinois, Urbana-Champaign. |
| */ |
| |
| #include "mod_proxy.h" |
| |
| #define CORE_PRIVATE |
| |
| #include "http_log.h" |
| #include "http_vhost.h" |
| #include "http_request.h" |
| #include "util_date.h" |
| #include "mod_core.h" |
| |
| /* Some WWW schemes and their default ports; this is basically /etc/services */ |
| /* This will become global when the protocol abstraction comes */ |
| static struct proxy_services defports[] = |
| { |
| {"http", DEFAULT_HTTP_PORT}, |
| {"ftp", DEFAULT_FTP_PORT}, |
| {"https", DEFAULT_HTTPS_PORT}, |
| {"gopher", DEFAULT_GOPHER_PORT}, |
| {"nntp", DEFAULT_NNTP_PORT}, |
| {"wais", DEFAULT_WAIS_PORT}, |
| {"snews", DEFAULT_SNEWS_PORT}, |
| {"prospero", DEFAULT_PROSPERO_PORT}, |
| {NULL, -1} /* unknown port */ |
| }; |
| |
| /* |
| * A Web proxy module. Stages: |
| * |
| * translate_name: set filename to proxy:<URL> |
| * 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); |
| |
| 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, |
| 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) { |
| 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; |
| } |
| |
| /* -------------------------------------------------------------- */ |
| /* Fixup the filename */ |
| |
| /* |
| * Canonicalise the URL |
| */ |
| static int proxy_fixup(request_rec *r) |
| { |
| char *url, *p; |
| |
| if (!r->proxyreq || strncmp(r->filename, "proxy:", 6) != 0) |
| return DECLINED; |
| |
| url = &r->filename[6]; |
| |
| /* canonicalise each specific scheme */ |
| if (strncasecmp(url, "http:", 5) == 0) |
| return ap_proxy_http_canon(r, url + 5, "http", DEFAULT_HTTP_PORT); |
| #if FTP |
| else if (strncasecmp(url, "ftp:", 4) == 0) |
| return ap_proxy_ftp_canon(r, url + 4); |
| #endif |
| |
| 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 = ap_unparse_uri_components(r->pool, |
| &r->parsed_uri, |
| UNP_REVEALPASSWORD); |
| |
| apr_table_set(r->headers_out, "Location", nuri); |
| ap_log_rerror(APLOG_MARK, APLOG_INFO|APLOG_NOERRNO, 0, r, |
| "Domain missing: %s sent to %s%s%s", r->uri, |
| ap_unparse_uri_components(r->pool, &r->parsed_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; |
| int direct_connect = 0; |
| const char *maxfwd_str; |
| const char *pragma, *auth, *imstr; |
| |
| if (!r->proxyreq || strncmp(r->filename, "proxy:", 6) != 0) |
| return DECLINED; |
| |
| if ((r->method_number == M_TRACE || r->method_number == M_OPTIONS) && |
| (maxfwd_str = apr_table_get(r->headers_in, "Max-Forwards")) != NULL) { |
| long maxfwd = strtol(maxfwd_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; |
| } |
| } |
| } |
| apr_table_setn(r->headers_in, "Max-Forwards", |
| apr_psprintf(r->pool, "%ld", (maxfwd > 0) ? maxfwd-1 : 0)); |
| } |
| |
| if ((rc = ap_setup_client_block(r, REQUEST_CHUNKED_ERROR))) |
| return rc; |
| |
| url = r->filename + 6; |
| p = strchr(url, ':'); |
| if (p == NULL) |
| return HTTP_BAD_REQUEST; |
| |
| pragma = apr_table_get(r->headers_in, "Pragma"); |
| auth = apr_table_get(r->headers_in, "Authorization"); |
| imstr = apr_table_get(r->headers_in, "If-Modified-Since"); |
| |
| ap_log_error(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, NULL, |
| "Request for %s, pragma=%s, auth=%s, imstr=%s", url, |
| pragma, auth, imstr); |
| |
| /* 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|APLOG_NOERRNO, 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 || |
| (p2 == NULL && strcasecmp(scheme, ents[i].scheme) == 0) || |
| (p2 != NULL && |
| strncasecmp(url, ents[i].scheme, strlen(ents[i].scheme)) == 0)) { |
| /* CONNECT is a special method that bypasses the normal |
| * proxy code. |
| */ |
| if (r->method_number == M_CONNECT) |
| rc = ap_proxy_connect_handler(r, url, ents[i].hostname, |
| ents[i].port); |
| /* we only know how to handle communication to a proxy via http */ |
| else if (strcasecmp(ents[i].protocol, "http") == 0) |
| rc = ap_proxy_http_handler(r, url, ents[i].hostname, |
| ents[i].port); |
| else |
| rc = DECLINED; |
| |
| /* an error or success */ |
| if (rc != DECLINED && rc != HTTP_BAD_GATEWAY) |
| return rc; |
| /* 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 */ |
| if (r->method_number == M_CONNECT) |
| return ap_proxy_connect_handler(r, url, NULL, 0); |
| if (strcasecmp(scheme, "http") == 0) |
| return ap_proxy_http_handler(r, url, NULL, 0); |
| #if FTP |
| if (strcasecmp(scheme, "ftp") == 0) |
| return ap_proxy_ftp_handler(r, NULL, url); |
| #endif |
| else |
| return HTTP_FORBIDDEN; |
| } |
| |
| /* -------------------------------------------------------------- */ |
| /* Setup configurable data */ |
| |
| static void * create_proxy_config(apr_pool_t *p, server_rec *s) |
| { |
| proxy_server_conf *ps = ap_pcalloc(p, sizeof(proxy_server_conf)); |
| |
| ps->proxies = ap_make_array(p, 10, sizeof(struct proxy_remote)); |
| ps->aliases = ap_make_array(p, 10, sizeof(struct proxy_alias)); |
| ps->raliases = ap_make_array(p, 10, sizeof(struct proxy_alias)); |
| ps->noproxies = ap_make_array(p, 10, sizeof(struct noproxy_entry)); |
| ps->dirconn = ap_make_array(p, 10, sizeof(struct dirconn_entry)); |
| ps->allowed_connect_ports = ap_make_array(p, 10, sizeof(int)); |
| /* pc->origin = ap_make_array(p, 10, sizeof(struct origin_entry));*/ |
| 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; |
| |
| return ps; |
| } |
| |
| static void * merge_proxy_config(apr_pool_t *p, void *basev, void *overridesv) |
| { |
| proxy_server_conf *ps = ap_pcalloc(p, sizeof(proxy_server_conf)); |
| proxy_server_conf *base = (proxy_server_conf *) basev; |
| proxy_server_conf *overrides = (proxy_server_conf *) overridesv; |
| |
| ps->proxies = ap_append_arrays(p, base->proxies, overrides->proxies); |
| ps->aliases = ap_append_arrays(p, base->aliases, overrides->aliases); |
| ps->raliases = ap_append_arrays(p, base->raliases, overrides->raliases); |
| ps->noproxies = ap_append_arrays(p, base->noproxies, overrides->noproxies); |
| ps->dirconn = ap_append_arrays(p, base->dirconn, overrides->dirconn); |
| ps->allowed_connect_ports = ap_append_arrays(p, base->allowed_connect_ports, overrides->allowed_connect_ports); |
| /* ps->origin = base->origin;*/ |
| |
| ps->domain = (overrides->domain == NULL) ? base->domain : overrides->domain; |
| ps->viaopt = (overrides->viaopt_set == 0) ? base->viaopt : overrides->viaopt; |
| ps->req = (overrides->req_set == 0) ? base->req : overrides->req; |
| ps->recv_buffer_size = (overrides->recv_buffer_size_set == 0) ? base->recv_buffer_size : overrides->recv_buffer_size; |
| |
| return ps; |
| } |
| |
| static const char * |
| add_proxy(cmd_parms *cmd, void *dummy, const char *f1, const char *r1) |
| { |
| 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; |
| int port; |
| |
| r = apr_pstrdup(cmd->pool, r1); |
| f = apr_pstrdup(cmd->pool, f1); |
| p = strchr(r, ':'); |
| if (p == NULL || p[1] != '/' || p[2] != '/' || p[3] == '\0') |
| return "ProxyRemote: Bad syntax for a remote proxy server"; |
| q = strchr(p + 3, ':'); |
| if (q != NULL) { |
| if (sscanf(q + 1, "%u", &port) != 1 || port > 65535) |
| return "ProxyRemote: Bad syntax for a remote proxy server (bad port number)"; |
| *q = '\0'; |
| } |
| else |
| port = -1; |
| *p = '\0'; |
| if (strchr(f, ':') == NULL) |
| ap_str_tolower(f); /* lowercase scheme */ |
| ap_str_tolower(p + 3); /* lowercase hostname */ |
| |
| if (port == -1) { |
| int i; |
| for (i = 0; defports[i].scheme != NULL; i++) |
| if (strcasecmp(defports[i].scheme, r) == 0) |
| break; |
| port = defports[i].port; |
| } |
| |
| new = apr_array_push(conf->proxies); |
| new->scheme = f; |
| new->protocol = r; |
| new->hostname = p + 3; |
| new->port = port; |
| return NULL; |
| } |
| |
| 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; |
| |
| new = apr_array_push(conf->aliases); |
| new->fake = f; |
| new->real = r; |
| 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); |
| new = apr_array_push(conf->raliases); |
| new->fake = f; |
| new->real = r; |
| return NULL; |
| } |
| |
| static const char * |
| set_proxy_exclude(cmd_parms *parms, void *dummy, const char *arg) |
| { |
| server_rec *s = parms->server; |
| proxy_server_conf *conf = |
| ap_get_module_config(s->module_config, &proxy_module); |
| struct noproxy_entry *new; |
| struct noproxy_entry *list = (struct noproxy_entry *) conf->noproxies->elts; |
| struct apr_sockaddr_t *addr; |
| int found = 0; |
| int i; |
| |
| /* Don't duplicate entries */ |
| for (i = 0; i < conf->noproxies->nelts; i++) { |
| if (strcasecmp(arg, list[i].name) == 0) /* ignore case for host names */ |
| found = 1; |
| } |
| |
| if (!found) { |
| new = apr_array_push(conf->noproxies); |
| new->name = arg; |
| /* Don't do name lookups on things that aren't dotted */ |
| if (ap_strchr_c(arg, '.') != NULL && |
| 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->hostentry = NULL; |
| |
| if (ap_proxy_is_ipaddr(New, parms->pool)) { |
| #if DEBUGGING |
| ap_log_error(APLOG_MARK, APLOG_STARTUP | APLOG_NOERRNO, 0, NULL, |
| "Parsed addr %s", inet_ntoa(New->addr)); |
| ap_log_error(APLOG_MARK, APLOG_STARTUP | APLOG_NOERRNO, 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 | APLOG_NOERRNO, 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 | APLOG_NOERRNO, 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_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_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 command_rec proxy_cmds[] = |
| { |
| 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, NULL, RSRC_CONF, |
| "a scheme, partial URL or '*' and a proxy server"), |
| AP_INIT_TAKE2("ProxyPass", add_pass, NULL, RSRC_CONF, |
| "a virtual path and a URL"), |
| AP_INIT_TAKE2("ProxyPassReverse", add_pass_reverse, NULL, RSRC_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_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"), |
| {NULL} |
| }; |
| |
| static void register_hooks(apr_pool_t *p) |
| { |
| /* 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); |
| /* fixups */ |
| ap_hook_fixups(proxy_fixup, NULL, NULL, APR_HOOK_FIRST); |
| /* post read_request handling */ |
| ap_hook_post_read_request(proxy_detect, NULL, NULL, APR_HOOK_FIRST); |
| } |
| |
| module AP_MODULE_DECLARE_DATA proxy_module = |
| { |
| STANDARD20_MODULE_STUFF, |
| NULL, /* create per-directory config structure */ |
| NULL, /* 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 |
| }; |