res_ari_applications.c

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/*
 * Asterisk -- An open source telephony toolkit.
 *
 * Copyright (C) 2013, Digium, Inc.
 *
 * David M. Lee, II <[email protected]>
 *
 * See http://www.asterisk.org for more information about
 * the Asterisk project. Please do not directly contact
 * any of the maintainers of this project for assistance;
 * the project provides a web site, mailing lists and IRC
 * channels for your use.
 *
 * This program is free software, distributed under the terms of
 * the GNU General Public License Version 2. See the LICENSE file
 * at the top of the source tree.
 */

/*
 * !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
 * !!!!!                               DO NOT EDIT                        !!!!!
 * !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
 * This file is generated by a mustache template. Please see the original
 * template in rest-api-templates/res_ari_resource.c.mustache
 */

/*! \file
 *
 * \brief Stasis application resources
 *
 * \author David M. Lee, II <[email protected]>
 */

/*** MODULEINFO
   <depend type="module">res_ari</depend>
   <depend type="module">res_ari_model</depend>
   <depend type="module">res_stasis</depend>
   <support_level>core</support_level>
 ***/

#include "asterisk.h"

#include "asterisk/app.h"
#include "asterisk/module.h"
#include "asterisk/stasis_app.h"
#include "ari/resource_applications.h"
#if defined(AST_DEVMODE)
#include "ari/ari_model_validators.h"
#endif

#define MAX_VALS 128

/*!
 * \brief Parameter parsing callback for /applications.
 * \param get_params GET parameters in the HTTP request.
 * \param path_vars Path variables extracted from the request.
 * \param headers HTTP headers.
 * \param[out] response Response to the HTTP request.
 */
static void ast_ari_applications_list_cb(
   struct ast_tcptls_session_instance *ser,
   struct ast_variable *get_params, struct ast_variable *path_vars,
   struct ast_variable *headers, struct ast_json *body, struct ast_ari_response *response)
{
   struct ast_ari_applications_list_args args = {};
#if defined(AST_DEVMODE)
   int is_valid;
   int code;
#endif /* AST_DEVMODE */

   ast_ari_applications_list(headers, &args, response);
#if defined(AST_DEVMODE)
   code = response->response_code;

   switch (code) {
   case 0: /* Implementation is still a stub, or the code wasn't set */
      is_valid = response->message == NULL;
      break;
   case 500: /* Internal Server Error */
   case 501: /* Not Implemented */
      is_valid = 1;
      break;
   default:
      if (200 <= code && code <= 299) {
         is_valid = ast_ari_validate_list(response->message,
            ast_ari_validate_application_fn());
      } else {
         ast_log(LOG_ERROR, "Invalid error response %d for /applications\n", code);
         is_valid = 0;
      }
   }

   if (!is_valid) {
      ast_log(LOG_ERROR, "Response validation failed for /applications\n");
      ast_ari_response_error(response, 500,
         "Internal Server Error", "Response validation failed");
   }
#endif /* AST_DEVMODE */

fin: __attribute__((unused))
   return;
}
/*!
 * \brief Parameter parsing callback for /applications/{applicationName}.
 * \param get_params GET parameters in the HTTP request.
 * \param path_vars Path variables extracted from the request.
 * \param headers HTTP headers.
 * \param[out] response Response to the HTTP request.
 */
static void ast_ari_applications_get_cb(
   struct ast_tcptls_session_instance *ser,
   struct ast_variable *get_params, struct ast_variable *path_vars,
   struct ast_variable *headers, struct ast_json *body, struct ast_ari_response *response)
{
   struct ast_ari_applications_get_args args = {};
   struct ast_variable *i;
#if defined(AST_DEVMODE)
   int is_valid;
   int code;
#endif /* AST_DEVMODE */

   for (i = path_vars; i; i = i->next) {
      if (strcmp(i->name, "applicationName") == 0) {
         args.application_name = (i->value);
      } else
      {}
   }
   ast_ari_applications_get(headers, &args, response);
#if defined(AST_DEVMODE)
   code = response->response_code;

   switch (code) {
   case 0: /* Implementation is still a stub, or the code wasn't set */
      is_valid = response->message == NULL;
      break;
   case 500: /* Internal Server Error */
   case 501: /* Not Implemented */
   case 404: /* Application does not exist. */
      is_valid = 1;
      break;
   default:
      if (200 <= code && code <= 299) {
         is_valid = ast_ari_validate_application(
            response->message);
      } else {
         ast_log(LOG_ERROR, "Invalid error response %d for /applications/{applicationName}\n", code);
         is_valid = 0;
      }
   }

   if (!is_valid) {
      ast_log(LOG_ERROR, "Response validation failed for /applications/{applicationName}\n");
      ast_ari_response_error(response, 500,
         "Internal Server Error", "Response validation failed");
   }
#endif /* AST_DEVMODE */

fin: __attribute__((unused))
   return;
}
int ast_ari_applications_subscribe_parse_body(
   struct ast_json *body,
   struct ast_ari_applications_subscribe_args *args)
{
   struct ast_json *field;
   /* Parse query parameters out of it */
   field = ast_json_object_get(body, "eventSource");
   if (field) {
      /* If they were silly enough to both pass in a query param and a
       * JSON body, free up the query value.
       */
      ast_free(args->event_source);
      if (ast_json_typeof(field) == AST_JSON_ARRAY) {
         /* Multiple param passed as array */
         size_t i;
         args->event_source_count = ast_json_array_size(field);
         args->event_source = ast_malloc(sizeof(*args->event_source) * args->event_source_count);

         if (!args->event_source) {
            return -1;
         }

         for (i = 0; i < args->event_source_count; ++i) {
            args->event_source[i] = ast_json_string_get(ast_json_array_get(field, i));
         }
      } else {
         /* Multiple param passed as single value */
         args->event_source_count = 1;
         args->event_source = ast_malloc(sizeof(*args->event_source) * args->event_source_count);
         if (!args->event_source) {
            return -1;
         }
         args->event_source[0] = ast_json_string_get(field);
      }
   }
   return 0;
}

/*!
 * \brief Parameter parsing callback for /applications/{applicationName}/subscription.
 * \param get_params GET parameters in the HTTP request.
 * \param path_vars Path variables extracted from the request.
 * \param headers HTTP headers.
 * \param[out] response Response to the HTTP request.
 */
static void ast_ari_applications_subscribe_cb(
   struct ast_tcptls_session_instance *ser,
   struct ast_variable *get_params, struct ast_variable *path_vars,
   struct ast_variable *headers, struct ast_json *body, struct ast_ari_response *response)
{
   struct ast_ari_applications_subscribe_args args = {};
   struct ast_variable *i;
#if defined(AST_DEVMODE)
   int is_valid;
   int code;
#endif /* AST_DEVMODE */

   for (i = get_params; i; i = i->next) {
      if (strcmp(i->name, "eventSource") == 0) {
         /* Parse comma separated list */
         char *vals[MAX_VALS];
         size_t j;

         args.event_source_parse = ast_strdup(i->value);
         if (!args.event_source_parse) {
            ast_ari_response_alloc_failed(response);
            goto fin;
         }

         if (strlen(args.event_source_parse) == 0) {
            /* ast_app_separate_args can't handle "" */
            args.event_source_count = 1;
            vals[0] = args.event_source_parse;
         } else {
            args.event_source_count = ast_app_separate_args(
               args.event_source_parse, ',', vals,
               ARRAY_LEN(vals));
         }

         if (args.event_source_count == 0) {
            ast_ari_response_alloc_failed(response);
            goto fin;
         }

         if (args.event_source_count >= MAX_VALS) {
            ast_ari_response_error(response, 400,
               "Bad Request",
               "Too many values for event_source");
            goto fin;
         }

         args.event_source = ast_malloc(sizeof(*args.event_source) * args.event_source_count);
         if (!args.event_source) {
            ast_ari_response_alloc_failed(response);
            goto fin;
         }

         for (j = 0; j < args.event_source_count; ++j) {
            args.event_source[j] = (vals[j]);
         }
      } else
      {}
   }
   for (i = path_vars; i; i = i->next) {
      if (strcmp(i->name, "applicationName") == 0) {
         args.application_name = (i->value);
      } else
      {}
   }
   if (ast_ari_applications_subscribe_parse_body(body, &args)) {
      ast_ari_response_alloc_failed(response);
      goto fin;
   }
   ast_ari_applications_subscribe(headers, &args, response);
#if defined(AST_DEVMODE)
   code = response->response_code;

   switch (code) {
   case 0: /* Implementation is still a stub, or the code wasn't set */
      is_valid = response->message == NULL;
      break;
   case 500: /* Internal Server Error */
   case 501: /* Not Implemented */
   case 400: /* Missing parameter. */
   case 404: /* Application does not exist. */
   case 422: /* Event source does not exist. */
      is_valid = 1;
      break;
   default:
      if (200 <= code && code <= 299) {
         is_valid = ast_ari_validate_application(
            response->message);
      } else {
         ast_log(LOG_ERROR, "Invalid error response %d for /applications/{applicationName}/subscription\n", code);
         is_valid = 0;
      }
   }

   if (!is_valid) {
      ast_log(LOG_ERROR, "Response validation failed for /applications/{applicationName}/subscription\n");
      ast_ari_response_error(response, 500,
         "Internal Server Error", "Response validation failed");
   }
#endif /* AST_DEVMODE */

fin: __attribute__((unused))
   ast_free(args.event_source_parse);
   ast_free(args.event_source);
   return;
}
int ast_ari_applications_unsubscribe_parse_body(
   struct ast_json *body,
   struct ast_ari_applications_unsubscribe_args *args)
{
   struct ast_json *field;
   /* Parse query parameters out of it */
   field = ast_json_object_get(body, "eventSource");
   if (field) {
      /* If they were silly enough to both pass in a query param and a
       * JSON body, free up the query value.
       */
      ast_free(args->event_source);
      if (ast_json_typeof(field) == AST_JSON_ARRAY) {
         /* Multiple param passed as array */
         size_t i;
         args->event_source_count = ast_json_array_size(field);
         args->event_source = ast_malloc(sizeof(*args->event_source) * args->event_source_count);

         if (!args->event_source) {
            return -1;
         }

         for (i = 0; i < args->event_source_count; ++i) {
            args->event_source[i] = ast_json_string_get(ast_json_array_get(field, i));
         }
      } else {
         /* Multiple param passed as single value */
         args->event_source_count = 1;
         args->event_source = ast_malloc(sizeof(*args->event_source) * args->event_source_count);
         if (!args->event_source) {
            return -1;
         }
         args->event_source[0] = ast_json_string_get(field);
      }
   }
   return 0;
}

/*!
 * \brief Parameter parsing callback for /applications/{applicationName}/subscription.
 * \param get_params GET parameters in the HTTP request.
 * \param path_vars Path variables extracted from the request.
 * \param headers HTTP headers.
 * \param[out] response Response to the HTTP request.
 */
static void ast_ari_applications_unsubscribe_cb(
   struct ast_tcptls_session_instance *ser,
   struct ast_variable *get_params, struct ast_variable *path_vars,
   struct ast_variable *headers, struct ast_json *body, struct ast_ari_response *response)
{
   struct ast_ari_applications_unsubscribe_args args = {};
   struct ast_variable *i;
#if defined(AST_DEVMODE)
   int is_valid;
   int code;
#endif /* AST_DEVMODE */

   for (i = get_params; i; i = i->next) {
      if (strcmp(i->name, "eventSource") == 0) {
         /* Parse comma separated list */
         char *vals[MAX_VALS];
         size_t j;

         args.event_source_parse = ast_strdup(i->value);
         if (!args.event_source_parse) {
            ast_ari_response_alloc_failed(response);
            goto fin;
         }

         if (strlen(args.event_source_parse) == 0) {
            /* ast_app_separate_args can't handle "" */
            args.event_source_count = 1;
            vals[0] = args.event_source_parse;
         } else {
            args.event_source_count = ast_app_separate_args(
               args.event_source_parse, ',', vals,
               ARRAY_LEN(vals));
         }

         if (args.event_source_count == 0) {
            ast_ari_response_alloc_failed(response);
            goto fin;
         }

         if (args.event_source_count >= MAX_VALS) {
            ast_ari_response_error(response, 400,
               "Bad Request",
               "Too many values for event_source");
            goto fin;
         }

         args.event_source = ast_malloc(sizeof(*args.event_source) * args.event_source_count);
         if (!args.event_source) {
            ast_ari_response_alloc_failed(response);
            goto fin;
         }

         for (j = 0; j < args.event_source_count; ++j) {
            args.event_source[j] = (vals[j]);
         }
      } else
      {}
   }
   for (i = path_vars; i; i = i->next) {
      if (strcmp(i->name, "applicationName") == 0) {
         args.application_name = (i->value);
      } else
      {}
   }
   if (ast_ari_applications_unsubscribe_parse_body(body, &args)) {
      ast_ari_response_alloc_failed(response);
      goto fin;
   }
   ast_ari_applications_unsubscribe(headers, &args, response);
#if defined(AST_DEVMODE)
   code = response->response_code;

   switch (code) {
   case 0: /* Implementation is still a stub, or the code wasn't set */
      is_valid = response->message == NULL;
      break;
   case 500: /* Internal Server Error */
   case 501: /* Not Implemented */
   case 400: /* Missing parameter; event source scheme not recognized. */
   case 404: /* Application does not exist. */
   case 409: /* Application not subscribed to event source. */
   case 422: /* Event source does not exist. */
      is_valid = 1;
      break;
   default:
      if (200 <= code && code <= 299) {
         is_valid = ast_ari_validate_application(
            response->message);
      } else {
         ast_log(LOG_ERROR, "Invalid error response %d for /applications/{applicationName}/subscription\n", code);
         is_valid = 0;
      }
   }

   if (!is_valid) {
      ast_log(LOG_ERROR, "Response validation failed for /applications/{applicationName}/subscription\n");
      ast_ari_response_error(response, 500,
         "Internal Server Error", "Response validation failed");
   }
#endif /* AST_DEVMODE */

fin: __attribute__((unused))
   ast_free(args.event_source_parse);
   ast_free(args.event_source);
   return;
}
int ast_ari_applications_filter_parse_body(
   struct ast_json *body,
   struct ast_ari_applications_filter_args *args)
{
   /* Parse query parameters out of it */
   return 0;
}

/*!
 * \brief Parameter parsing callback for /applications/{applicationName}/eventFilter.
 * \param get_params GET parameters in the HTTP request.
 * \param path_vars Path variables extracted from the request.
 * \param headers HTTP headers.
 * \param[out] response Response to the HTTP request.
 */
static void ast_ari_applications_filter_cb(
   struct ast_tcptls_session_instance *ser,
   struct ast_variable *get_params, struct ast_variable *path_vars,
   struct ast_variable *headers, struct ast_json *body, struct ast_ari_response *response)
{
   struct ast_ari_applications_filter_args args = {};
   struct ast_variable *i;
#if defined(AST_DEVMODE)
   int is_valid;
   int code;
#endif /* AST_DEVMODE */

   for (i = path_vars; i; i = i->next) {
      if (strcmp(i->name, "applicationName") == 0) {
         args.application_name = (i->value);
      } else
      {}
   }
   args.filter = body;
   ast_ari_applications_filter(headers, &args, response);
#if defined(AST_DEVMODE)
   code = response->response_code;

   switch (code) {
   case 0: /* Implementation is still a stub, or the code wasn't set */
      is_valid = response->message == NULL;
      break;
   case 500: /* Internal Server Error */
   case 501: /* Not Implemented */
   case 400: /* Bad request. */
   case 404: /* Application does not exist. */
      is_valid = 1;
      break;
   default:
      if (200 <= code && code <= 299) {
         is_valid = ast_ari_validate_application(
            response->message);
      } else {
         ast_log(LOG_ERROR, "Invalid error response %d for /applications/{applicationName}/eventFilter\n", code);
         is_valid = 0;
      }
   }

   if (!is_valid) {
      ast_log(LOG_ERROR, "Response validation failed for /applications/{applicationName}/eventFilter\n");
      ast_ari_response_error(response, 500,
         "Internal Server Error", "Response validation failed");
   }
#endif /* AST_DEVMODE */

fin: __attribute__((unused))
   return;
}

/*! \brief REST handler for /api-docs/applications.json */
static struct stasis_rest_handlers applications_applicationName_subscription = {
   .path_segment = "subscription",
   .callbacks = {
      [AST_HTTP_POST] = ast_ari_applications_subscribe_cb,
      [AST_HTTP_DELETE] = ast_ari_applications_unsubscribe_cb,
   },
   .num_children = 0,
   .children = {  }
};
/*! \brief REST handler for /api-docs/applications.json */
static struct stasis_rest_handlers applications_applicationName_eventFilter = {
   .path_segment = "eventFilter",
   .callbacks = {
      [AST_HTTP_PUT] = ast_ari_applications_filter_cb,
   },
   .num_children = 0,
   .children = {  }
};
/*! \brief REST handler for /api-docs/applications.json */
static struct stasis_rest_handlers applications_applicationName = {
   .path_segment = "applicationName",
   .is_wildcard = 1,
   .callbacks = {
      [AST_HTTP_GET] = ast_ari_applications_get_cb,
   },
   .num_children = 2,
   .children = { &applications_applicationName_subscription,&applications_applicationName_eventFilter, }
};
/*! \brief REST handler for /api-docs/applications.json */
static struct stasis_rest_handlers applications = {
   .path_segment = "applications",
   .callbacks = {
      [AST_HTTP_GET] = ast_ari_applications_list_cb,
   },
   .num_children = 1,
   .children = { &applications_applicationName, }
};

static int unload_module(void)
{
   ast_ari_remove_handler(&applications);
   return 0;
}

static int load_module(void)
{
   int res = 0;


   res |= ast_ari_add_handler(&applications);
   if (res) {
      unload_module();
      return AST_MODULE_LOAD_DECLINE;
   }

   return AST_MODULE_LOAD_SUCCESS;
}

AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_DEFAULT, "RESTful API module - Stasis application resources",
   .support_level = AST_MODULE_SUPPORT_CORE,
   .load = load_module,
   .unload = unload_module,
   .requires = "res_ari,res_ari_model,res_stasis",
);