| /* ==================================================================== |
| * The Apache Software License, Version 1.1 |
| * |
| * Copyright (c) 2000-2002 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 |
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| * 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. |
| */ |
| |
| /* |
| * mod_actions.c: executes scripts based on MIME type or HTTP method |
| * |
| * by Alexei Kosut; based on mod_cgi.c, mod_mime.c and mod_includes.c, |
| * adapted by rst from original NCSA code by Rob McCool |
| * |
| * Usage instructions: |
| * |
| * Action mime/type /cgi-bin/script |
| * |
| * will activate /cgi-bin/script when a file of content type mime/type is |
| * requested. It sends the URL and file path of the requested document using |
| * the standard CGI PATH_INFO and PATH_TRANSLATED environment variables. |
| * |
| * Script PUT /cgi-bin/script |
| * |
| * will activate /cgi-bin/script when a request is received with the |
| * HTTP method "PUT". The available method names are defined in httpd.h. |
| * If the method is GET, the script will only be activated if the requested |
| * URI includes query information (stuff after a ?-mark). |
| */ |
| |
| #include "apr_strings.h" |
| #include "ap_config.h" |
| #include "httpd.h" |
| #include "http_config.h" |
| #include "http_request.h" |
| #include "http_core.h" |
| #include "http_protocol.h" |
| #include "http_main.h" |
| #include "http_log.h" |
| #include "util_script.h" |
| |
| typedef struct { |
| apr_table_t *action_types; /* Added with Action... */ |
| const char *scripted[METHODS]; /* Added with Script... */ |
| int configured; /* True if Action or Script has been |
| * called at least once |
| */ |
| } action_dir_config; |
| |
| module AP_MODULE_DECLARE_DATA actions_module; |
| |
| static void *create_action_dir_config(apr_pool_t *p, char *dummy) |
| { |
| action_dir_config *new = |
| (action_dir_config *) apr_pcalloc(p, sizeof(action_dir_config)); |
| |
| new->action_types = apr_table_make(p, 4); |
| |
| return new; |
| } |
| |
| static void *merge_action_dir_configs(apr_pool_t *p, void *basev, void *addv) |
| { |
| action_dir_config *base = (action_dir_config *) basev; |
| action_dir_config *add = (action_dir_config *) addv; |
| action_dir_config *new = (action_dir_config *) apr_palloc(p, |
| sizeof(action_dir_config)); |
| int i; |
| |
| new->action_types = apr_table_overlay(p, add->action_types, |
| base->action_types); |
| |
| for (i = 0; i < METHODS; ++i) { |
| new->scripted[i] = add->scripted[i] ? add->scripted[i] |
| : base->scripted[i]; |
| } |
| |
| new->configured = (base->configured || add->configured); |
| return new; |
| } |
| |
| static const char *add_action(cmd_parms *cmd, void *m_v, |
| const char *type, const char *script) |
| { |
| action_dir_config *m = (action_dir_config *)m_v; |
| apr_table_setn(m->action_types, type, script); |
| m->configured = 1; |
| return NULL; |
| } |
| |
| static const char *set_script(cmd_parms *cmd, void *m_v, |
| const char *method, const char *script) |
| { |
| action_dir_config *m = (action_dir_config *)m_v; |
| int methnum; |
| |
| methnum = ap_method_number_of(method); |
| if (methnum == M_TRACE) |
| return "TRACE not allowed for Script"; |
| else if (methnum == M_INVALID) |
| return "Unknown method type for Script"; |
| else |
| m->scripted[methnum] = script; |
| |
| m->configured = 1; |
| return NULL; |
| } |
| |
| static const command_rec action_cmds[] = |
| { |
| AP_INIT_TAKE2("Action", add_action, NULL, OR_FILEINFO, |
| "a media type followed by a script name"), |
| AP_INIT_TAKE2("Script", set_script, NULL, ACCESS_CONF | RSRC_CONF, |
| "a method followed by a script name"), |
| {NULL} |
| }; |
| |
| static int action_handler(request_rec *r) |
| { |
| action_dir_config *conf = (action_dir_config *) |
| ap_get_module_config(r->per_dir_config, &actions_module); |
| const char *t, *action; |
| const char *script; |
| int i; |
| |
| if (!conf->configured) { |
| return DECLINED; |
| } |
| |
| /* Note that this handler handles _all_ types, so handler is unchecked */ |
| |
| /* Set allowed stuff */ |
| for (i = 0; i < METHODS; ++i) { |
| if (conf->scripted[i]) |
| r->allowed |= (AP_METHOD_BIT << i); |
| } |
| |
| /* First, check for the method-handling scripts */ |
| if (r->method_number == M_GET) { |
| if (r->args) |
| script = conf->scripted[M_GET]; |
| else |
| script = NULL; |
| } |
| else { |
| script = conf->scripted[r->method_number]; |
| } |
| |
| /* Check for looping, which can happen if the CGI script isn't */ |
| if (script && r->prev && r->prev->prev) |
| return DECLINED; |
| |
| /* Second, check for actions (which override the method scripts) */ |
| action = r->handler ? r->handler : |
| ap_field_noparam(r->pool, r->content_type); |
| if ((t = apr_table_get(conf->action_types, |
| action ? action : ap_default_type(r)))) { |
| script = t; |
| if (r->finfo.filetype == 0) { |
| ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR, 0, r, |
| "File does not exist: %s", r->filename); |
| return HTTP_NOT_FOUND; |
| } |
| } |
| |
| if (script == NULL) |
| return DECLINED; |
| |
| ap_internal_redirect_handler(apr_pstrcat(r->pool, script, ap_escape_uri(r->pool, |
| r->uri), r->args ? "?" : NULL, r->args, NULL), r); |
| return OK; |
| } |
| |
| static void register_hooks(apr_pool_t *p) |
| { |
| ap_hook_handler(action_handler,NULL,NULL,APR_HOOK_LAST); |
| } |
| |
| module AP_MODULE_DECLARE_DATA actions_module = |
| { |
| STANDARD20_MODULE_STUFF, |
| create_action_dir_config, /* dir config creater */ |
| merge_action_dir_configs, /* dir merger --- default is to override */ |
| NULL, /* server config */ |
| NULL, /* merge server config */ |
| action_cmds, /* command apr_table_t */ |
| register_hooks /* register hooks */ |
| }; |