modules/dav/fs/mod_dav_fs.c

   1 /* Licensed to the Apache Software Foundation (ASF) under one or more
   2  * contributor license agreements.  See the NOTICE file distributed with
   3  * this work for additional information regarding copyright ownership.
   4  * The ASF licenses this file to You under the Apache License, Version 2.0
   5  * (the "License"); you may not use this file except in compliance with
   6  * the License.  You may obtain a copy of the License at
   7  *
   8  *     http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 #include "httpd.h"
  18 #include "http_config.h"
  19 #include "apr_strings.h"
  20
  21 #include "mod_dav.h"
  22 #include "repos.h"
  23
  24 /* per-server configuration */
  25 typedef struct {
  26     const char *lockdb_path;
  27
  28 } dav_fs_server_conf;
  29
  30 extern module AP_MODULE_DECLARE_DATA dav_fs_module;
  31
  32 const char *dav_get_lockdb_path(const request_rec *r)
  33 {
  34     dav_fs_server_conf *conf;
  35
  36     conf = ap_get_module_config(r->server->module_config, &dav_fs_module);
  37     return conf->lockdb_path;
  38 }
  39
  40 static void *dav_fs_create_server_config(apr_pool_t *p, server_rec *s)
  41 {
  42     return apr_pcalloc(p, sizeof(dav_fs_server_conf));
  43 }
  44
  45 static void *dav_fs_merge_server_config(apr_pool_t *p,
  46                                         void *base, void *overrides)
  47 {
  48     dav_fs_server_conf *parent = base;
  49     dav_fs_server_conf *child = overrides;
  50     dav_fs_server_conf *newconf;
  51
  52     newconf = apr_pcalloc(p, sizeof(*newconf));
  53
  54     newconf->lockdb_path =
  55         child->lockdb_path ? child->lockdb_path : parent->lockdb_path;
  56
  57     return newconf;
  58 }
  59
  60 /*
  61  * Command handler for the DAVLockDB directive, which is TAKE1
  62  */
  63 static const char *dav_fs_cmd_davlockdb(cmd_parms *cmd, void *config,
  64                                         const char *arg1)
  65 {
  66     dav_fs_server_conf *conf;
  67     conf = ap_get_module_config(cmd->server->module_config,
  68                                 &dav_fs_module);
  69     conf->lockdb_path = ap_server_root_relative(cmd->pool, arg1);
  70
  71     if (!conf->lockdb_path) {
  72         return apr_pstrcat(cmd->pool, "Invalid DAVLockDB path ",
  73                            arg1, NULL);
  74     }
  75
  76     return NULL;
  77 }
  78
  79 static const command_rec dav_fs_cmds[] =
  80 {
  81     /* per server */
  82     AP_INIT_TAKE1("DAVLockDB", dav_fs_cmd_davlockdb, NULL, RSRC_CONF,
  83                   "specify a lock database"),
  84
  85     { NULL }
  86 };
  87
  88 static void register_hooks(apr_pool_t *p)
  89 {
  90     dav_hook_gather_propsets(dav_fs_gather_propsets, NULL, NULL,
  91                              APR_HOOK_MIDDLE);
  92     dav_hook_find_liveprop(dav_fs_find_liveprop, NULL, NULL, APR_HOOK_MIDDLE);
  93     dav_hook_insert_all_liveprops(dav_fs_insert_all_liveprops, NULL, NULL,
  94                                   APR_HOOK_MIDDLE);
  95
  96     dav_fs_register(p);
  97 }
  98
  99 module AP_MODULE_DECLARE_DATA dav_fs_module =
 100 {
 101     STANDARD20_MODULE_STUFF,
 102     NULL,                        /* dir config creater */
 103     NULL,                        /* dir merger --- default is to override */
 104     dav_fs_create_server_config, /* server config */
 105     dav_fs_merge_server_config,  /* merge server config */
 106     dav_fs_cmds,                 /* command table */
 107     register_hooks,              /* register hooks */
 108 };