plugin.c

   1 /*
   2  * uhttpd - Tiny single-threaded httpd - Main header
   3  *
   4  *   Copyright (C) 2010-2012 Jo-Philipp Wich <xm@subsignal.org>
   5  *   Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
   6  *
   7  *  Licensed under the Apache License, Version 2.0 (the "License");
   8  *  you may not use this file except in compliance with the License.
   9  *  You may obtain a copy of the License at
  10  *
  11  *      http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  *  Unless required by applicable law or agreed to in writing, software
  14  *  distributed under the License is distributed on an "AS IS" BASIS,
  15  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  *  See the License for the specific language governing permissions and
  17  *  limitations under the License.
  18  */
  19
  20 #include <dlfcn.h>
  21 #include "uhttpd.h"
  22 #include "plugin.h"
  23
  24 static const struct uhttpd_ops ops = {
  25         .dispatch_add = uh_dispatch_add,
  26         .path_match = uh_path_match,
  27         .create_process = uh_create_process,
  28         .get_process_vars = uh_get_process_vars,
  29         .client_error = uh_client_error,
  30         .request_done = uh_request_done,
  31         .chunk_write = uh_chunk_write,
  32         .urlencode = uh_urlencode,
  33         .urldecode = uh_urldecode,
  34 };
  35
  36 int uh_plugin_init(const char *name)
  37 {
  38         struct uhttpd_plugin *p;
  39         const char *sym;
  40         void *dlh;
  41
  42         dlh = dlopen(name, RTLD_LAZY | RTLD_LOCAL);
  43         if (!dlh) {
  44                 fprintf(stderr, "Could not open plugin %s: %s\n", name, dlerror());
  45                 return -ENOENT;
  46         }
  47
  48         sym = "uhttpd_plugin";
  49         p = dlsym(dlh, sym);
  50         if (!p) {
  51                 fprintf(stderr, "Could not find symbol '%s' in plugin '%s'\n", sym, name);
  52                 return -ENOENT;
  53         }
  54
  55         return p->init(&ops, &conf);
  56 }