--- /dev/null
+/* 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.
+ */
+
+/*
+ * 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_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 */
+};
Code Review / bottlenecks.git / blobdiff