plugin_rest_config.c File Reference

#include "platform.h"
#include "gnunet_rest_plugin.h"
#include <gnunet_rest_lib.h>
#include <gnunet_util_lib.h>
#include <jansson.h>

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Data Structures
struct	Plugin
	Handle for a plugin. More...
struct	RequestHandle
	The request handle. More...

Macros
#define	GNUNET_REST_API_NS_CONFIG   "/config"

Functions
static void	cleanup_handle (struct RequestHandle *handle)
	Cleanup request handle. More...
static void	do_error (void *cls)
	Task run on shutdown. More...
static void	add_sections (void *cls, const char *section, const char *option, const char *value)
static void	add_section_contents (void *cls, const char *section, const char *option, const char *value)
static void	get_cont (struct GNUNET_REST_RequestHandle *con_handle, const char *url, void *cls)
	Handle rest request. More...
static void	options_cont (struct GNUNET_REST_RequestHandle *con_handle, const char *url, void *cls)
	Handle rest request. More...
static void	rest_config_process_request (struct GNUNET_REST_RequestHandle *conndata_handle, GNUNET_REST_ResultProcessor proc, void *proc_cls)
	Function processing the REST call. More...
void *	libgnunet_plugin_rest_config_init (void *cls)
	Entry point for the plugin. More...
void *	libgnunet_plugin_rest_config_done (void *cls)
	Exit point from the plugin. More...

Variables
const struct GNUNET_CONFIGURATION_Handle *	cfg
	Handle to our configuration. More...

Macro Definition Documentation

GNUNET_REST_API_NS_CONFIG

#define GNUNET_REST_API_NS_CONFIG   "/config"

Definition at line 33 of file plugin_rest_config.c.

Referenced by get_cont(), libgnunet_plugin_rest_config_init(), and rest_config_process_request().

Function Documentation

cleanup_handle()

static void cleanup_handle ( struct RequestHandle *  handle )

static

Cleanup request handle.

Parameters

handle

Handle to clean up

Definition at line 80 of file plugin_rest_config.c.

References GNUNET_ERROR_TYPE_DEBUG, GNUNET_free, GNUNET_log, and RequestHandle::url.

Referenced by do_error(), get_cont(), and options_cont().

{
  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Cleaning up\n");
  if (NULL != handle->url)
    GNUNET_free (handle->url);
  GNUNET_free (handle);
}

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do_error()

static void do_error ( void *  cls )

static

Task run on shutdown.

Cleans up everything.

Parameters

cls	unused
tc	scheduler context

Definition at line 96 of file plugin_rest_config.c.

References cleanup_handle(), GNUNET_REST_create_response(), handle, RequestHandle::proc, RequestHandle::proc_cls, and RequestHandle::response_code.

Referenced by get_cont(), and rest_config_process_request().

{
  struct RequestHandle *handle = cls;
  struct MHD_Response *resp;

  resp = GNUNET_REST_create_response (NULL);
  handle->proc (handle->proc_cls, resp, handle->response_code);
  cleanup_handle (handle);
}

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add_sections()

static void add_sections ( void *  cls, const char *  section, const char *  option, const char *  value  )

static

Definition at line 108 of file plugin_rest_config.c.

Referenced by get_cont().

{
  json_t *sections_obj = cls;
  json_t *sec_obj;

  sec_obj = json_object_get (sections_obj, section);
  if (NULL != sec_obj)
  {
    json_object_set_new (sec_obj, option, json_string (value));
    return;
  }
  sec_obj = json_object ();
  json_object_set_new (sec_obj, option, json_string (value));
  json_object_set_new (sections_obj, section, sec_obj);
}

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add_section_contents()

static void add_section_contents ( void *  cls, const char *  section, const char *  option, const char *  value  )

static

Definition at line 128 of file plugin_rest_config.c.

Referenced by get_cont().

{
  json_t *section_obj = cls;
  json_object_set_new (section_obj, option, json_string (value));
}

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get_cont()

static void get_cont ( struct GNUNET_REST_RequestHandle *  con_handle, const char *  url, void *  cls  )

static

Handle rest request.

Parameters

handle

the lookup handle

Definition at line 144 of file plugin_rest_config.c.

References add_section_contents(), add_sections(), cleanup_handle(), do_error(), GNUNET_CONFIGURATION_iterate(), GNUNET_CONFIGURATION_iterate_section_values(), GNUNET_free, GNUNET_REST_API_NS_CONFIG, GNUNET_REST_create_response(), GNUNET_SCHEDULER_add_now(), handle, RequestHandle::proc, RequestHandle::proc_cls, response, RequestHandle::response_code, result, section, and RequestHandle::url.

Referenced by rest_config_process_request().

{
  struct MHD_Response *resp;
  struct RequestHandle *handle = cls;
  const char *section;
  char *response;
  json_t *result;

  if (strlen (GNUNET_REST_API_NS_CONFIG) > strlen (handle->url))
  {
    handle->response_code = MHD_HTTP_BAD_REQUEST;
    GNUNET_SCHEDULER_add_now (&do_error, handle);
    return;
  }
  if (strlen (GNUNET_REST_API_NS_CONFIG) == strlen (handle->url))
  {
    result = json_object ();
    GNUNET_CONFIGURATION_iterate (cfg, &add_sections, result);
  }
  else
  {
    result = json_object ();
    section = &handle->url[strlen (GNUNET_REST_API_NS_CONFIG) + 1];
    GNUNET_CONFIGURATION_iterate_section_values (cfg,
                                                 section,
                                                 &add_section_contents,
                                                 result);
  }
  response = json_dumps (result, 0);
  resp = GNUNET_REST_create_response (response);
  handle->proc (handle->proc_cls, resp, MHD_HTTP_OK);
  cleanup_handle (handle);
  GNUNET_free (response);
  json_decref (result);
}

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options_cont()

static void options_cont ( struct GNUNET_REST_RequestHandle *  con_handle, const char *  url, void *  cls  )

static

Handle rest request.

Parameters

handle

the lookup handle

Definition at line 189 of file plugin_rest_config.c.

References cleanup_handle(), GNUNET_REST_create_response(), handle, RequestHandle::proc, and RequestHandle::proc_cls.

Referenced by rest_config_process_request().

{
  struct MHD_Response *resp;
  struct RequestHandle *handle = cls;

  resp = GNUNET_REST_create_response (NULL);
  MHD_add_response_header (resp,
                           "Access-Control-Allow-Methods",
                           MHD_HTTP_METHOD_GET);
  handle->proc (handle->proc_cls, resp, MHD_HTTP_OK);
  cleanup_handle (handle);
}

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rest_config_process_request()

static void rest_config_process_request ( struct GNUNET_REST_RequestHandle *  conndata_handle, GNUNET_REST_ResultProcessor  proc, void *  proc_cls  )

static

Function processing the REST call.

Parameters

method	HTTP method
url	URL of the HTTP request
data	body of the HTTP request (optional)
data_size	length of the body
proc	callback function for the result
proc_cls	closure for proc

Returns

GNUNET_OK if request accepted

Definition at line 217 of file plugin_rest_config.c.

References do_error(), GNUNET_REST_RequestHandlerError::error_code, get_cont(), GNUNET_new, GNUNET_NO, GNUNET_REST_API_NS_CONFIG, GNUNET_REST_handle_request(), GNUNET_REST_HANDLER_END, GNUNET_SCHEDULER_add_now(), GNUNET_strdup, handle, options_cont(), RequestHandle::proc, RequestHandle::proc_cls, RequestHandle::response_code, RequestHandle::rest_handle, GNUNET_REST_RequestHandle::url, and RequestHandle::url.

Referenced by libgnunet_plugin_rest_config_init().

{
  static const struct GNUNET_REST_RequestHandler handlers[] = {
    {MHD_HTTP_METHOD_GET, GNUNET_REST_API_NS_CONFIG, &get_cont},
    {MHD_HTTP_METHOD_OPTIONS, GNUNET_REST_API_NS_CONFIG, &options_cont},
    GNUNET_REST_HANDLER_END};
  struct RequestHandle *handle = GNUNET_new (struct RequestHandle);
  struct GNUNET_REST_RequestHandlerError err;

  handle->proc_cls = proc_cls;
  handle->proc = proc;
  handle->rest_handle = conndata_handle;
  handle->url = GNUNET_strdup (conndata_handle->url);
  if (handle->url[strlen (handle->url) - 1] == '/')
    handle->url[strlen (handle->url) - 1] = '\0';

  if (GNUNET_NO ==
      GNUNET_REST_handle_request (conndata_handle, handlers, &err, handle))
  {
    handle->response_code = err.error_code;
    GNUNET_SCHEDULER_add_now (&do_error, handle);
  }
}

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libgnunet_plugin_rest_config_init()

void* libgnunet_plugin_rest_config_init

(

void *

cls

)

Entry point for the plugin.

Parameters

cls	the "struct GNUNET_NAMESTORE_PluginEnvironment*"

Returns

NULL on error, otherwise the plugin context

Definition at line 251 of file plugin_rest_config.c.

References _, Plugin::api, Plugin::cfg, GNUNET_REST_Plugin::cls, GNUNET_ERROR_TYPE_INFO, GNUNET_log, GNUNET_new, GNUNET_REST_API_NS_CONFIG, GNUNET_REST_Plugin::name, plugin, GNUNET_REST_Plugin::process_request, and rest_config_process_request().

{
  static struct Plugin plugin;
  cfg = cls;
  struct GNUNET_REST_Plugin *api;

  if (NULL != plugin.cfg)
    return NULL; /* can only initialize once! */
  memset (&plugin, 0, sizeof (struct Plugin));
  plugin.cfg = cfg;
  api = GNUNET_new (struct GNUNET_REST_Plugin);
  api->cls = &plugin;
  api->name = GNUNET_REST_API_NS_CONFIG;
  api->process_request = &rest_config_process_request;
  GNUNET_log (GNUNET_ERROR_TYPE_INFO, _ ("CONFIG REST API initialized\n"));
  return api;
}

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libgnunet_plugin_rest_config_done()

void* libgnunet_plugin_rest_config_done

(

void *

cls

)

Exit point from the plugin.

Parameters

cls	the plugin context (as returned by "init")

Returns

always NULL

Definition at line 277 of file plugin_rest_config.c.

References Plugin::api, Plugin::cfg, GNUNET_REST_Plugin::cls, GNUNET_ERROR_TYPE_DEBUG, GNUNET_free, GNUNET_log, and plugin.

{
  struct GNUNET_REST_Plugin *api = cls;
  struct Plugin *plugin = api->cls;

  plugin->cfg = NULL;
  GNUNET_free (api);
  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "CONFIG REST plugin is finished\n");
  return NULL;
}

Variable Documentation

cfg

const struct GNUNET_CONFIGURATION_Handle* cfg

Handle to our configuration.

Handle to our configuration.

Definition at line 43 of file plugin_rest_config.c.