/*
This file is part of GNUnet.
Copyright (C) 2012-2015 GNUnet e.V.
GNUnet is free software: you can redistribute it and/or modify it
under the terms of the GNU Affero General Public License as published
by the Free Software Foundation, either version 3 of the License,
or (at your option) any later version.
GNUnet is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see .
*/
/**
* @author Martin Schanzenbach
* @file identity/plugin_rest_identity.c
* @brief GNUnet Namestore REST plugin
*
*/
#include "platform.h"
#include "gnunet_rest_plugin.h"
#include "gnunet_identity_service.h"
#include "gnunet_rest_lib.h"
#include "gnunet_jsonapi_lib.h"
#include "gnunet_jsonapi_util.h"
#include "microhttpd.h"
#include
#include "gnunet_signatures.h"
/**
* REST root namespace
*/
#define GNUNET_REST_API_NS_IDENTITY "/identity"
/**
* State while collecting all egos
*/
#define ID_REST_STATE_INIT 0
/**
* Done collecting egos
*/
#define ID_REST_STATE_POST_INIT 1
/**
* Resource type
*/
#define GNUNET_REST_JSONAPI_IDENTITY_EGO "ego"
/**
* Name attribute
*/
#define GNUNET_REST_JSONAPI_IDENTITY_NAME "name"
/**
* Attribute to rename "name" TODO we changed id to the pubkey
* so this can be unified with "name"
*/
#define GNUNET_REST_JSONAPI_IDENTITY_NEWNAME "newname"
/**
* URL parameter to change the subsytem for ego
*/
#define GNUNET_REST_JSONAPI_IDENTITY_SUBSYSTEM "subsystem"
/**
* Error messages
*/
#define GNUNET_REST_ERROR_RESOURCE_INVALID "Resource location invalid"
#define GNUNET_REST_ERROR_NO_DATA "No data"
/**
* GNUid token lifetime
*/
#define GNUNET_GNUID_TOKEN_EXPIRATION_MICROSECONDS 300000000
/**
* The configuration handle
*/
const struct GNUNET_CONFIGURATION_Handle *cfg;
/**
* HTTP methods allows for this plugin
*/
static char* allow_methods;
/**
* @brief struct returned by the initialization function of the plugin
*/
struct Plugin
{
const struct GNUNET_CONFIGURATION_Handle *cfg;
};
/**
* The ego list
*/
struct EgoEntry
{
/**
* DLL
*/
struct EgoEntry *next;
/**
* DLL
*/
struct EgoEntry *prev;
/**
* Ego Identifier
*/
char *identifier;
/**
* Public key string
*/
char *keystring;
/**
* The Ego
*/
struct GNUNET_IDENTITY_Ego *ego;
};
struct RequestHandle
{
/**
* Ego list
*/
struct EgoEntry *ego_head;
/**
* Ego list
*/
struct EgoEntry *ego_tail;
/**
* Handle to the rest connection
*/
struct GNUNET_REST_RequestHandle *conndata_handle;
/**
* response code
*/
int response_code;
/**
* The processing state
*/
int state;
/**
* Handle to GNS service.
*/
struct GNUNET_IDENTITY_Handle *identity_handle;
/**
* IDENTITY Operation
*/
struct GNUNET_IDENTITY_Operation *op;
/**
* Desired timeout for the lookup (default is no timeout).
*/
struct GNUNET_TIME_Relative timeout;
/**
* ID of a task associated with the resolution process.
*/
struct GNUNET_SCHEDULER_Task * timeout_task;
/**
* The plugin result processor
*/
GNUNET_REST_ResultProcessor proc;
/**
* The closure of the result processor
*/
void *proc_cls;
/**
* The name to look up
*/
char *name;
/**
* The subsystem set from REST
*/
char *subsys;
/**
* The url
*/
char *url;
/**
* The data from the REST request
*/
const char* data;
/**
* the length of the REST data
*/
size_t data_size;
/**
* HTTP method
*/
const char* method;
/**
* Error response message
*/
char *emsg;
};
/**
* Cleanup lookup handle
* @param handle Handle to clean up
*/
static void
cleanup_handle (struct RequestHandle *handle)
{
struct EgoEntry *ego_entry;
struct EgoEntry *ego_tmp;
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Cleaning up\n");
if (NULL != handle->name)
GNUNET_free (handle->name);
if (NULL != handle->timeout_task)
{
GNUNET_SCHEDULER_cancel (handle->timeout_task);
handle->timeout_task = NULL;
}
if (NULL != handle->identity_handle)
GNUNET_IDENTITY_disconnect (handle->identity_handle);
if (NULL != handle->subsys)
GNUNET_free (handle->subsys);
if (NULL != handle->url)
GNUNET_free (handle->url);
if (NULL != handle->emsg)
GNUNET_free (handle->emsg);
for (ego_entry = handle->ego_head;
NULL != ego_entry;)
{
ego_tmp = ego_entry;
ego_entry = ego_entry->next;
GNUNET_free (ego_tmp->identifier);
GNUNET_free (ego_tmp->keystring);
GNUNET_free (ego_tmp);
}
GNUNET_free (handle);
}
/**
* Task run on errors. Reports an error and cleans up everything.
*
* @param cls the `struct RequestHandle`
*/
static void
do_error (void *cls)
{
struct RequestHandle *handle = cls;
struct MHD_Response *resp;
char *json_error;
GNUNET_asprintf (&json_error,
"{Error while processing request: %s}",
&handle->emsg);
resp = GNUNET_REST_create_response (json_error);
handle->proc (handle->proc_cls,
resp,
handle->response_code);
cleanup_handle (handle);
GNUNET_free (json_error);
}
/**
* Callback for IDENTITY_get()
*
* @param cls the RequestHandle
* @param ego the Ego found
* @param ctx the context
* @param name the id of the ego
*/
static void
get_ego_for_subsys (void *cls,
struct GNUNET_IDENTITY_Ego *ego,
void **ctx,
const char *name)
{
struct RequestHandle *handle = cls;
struct GNUNET_JSONAPI_Document *json_document;
struct GNUNET_JSONAPI_Resource *json_resource;
struct EgoEntry *ego_entry;
struct MHD_Response *resp;
json_t *name_json;
char *result_str;
json_document = GNUNET_JSONAPI_document_new ();
for (ego_entry = handle->ego_head;
NULL != ego_entry;
ego_entry = ego_entry->next)
{
if ( (NULL != name) && (0 != strcmp (name, ego_entry->identifier)) )
continue;
if (NULL == name)
continue;
json_resource = GNUNET_JSONAPI_resource_new
(GNUNET_REST_JSONAPI_IDENTITY_EGO, ego_entry->keystring);
name_json = json_string (ego_entry->identifier);
GNUNET_JSONAPI_resource_add_attr (json_resource,
GNUNET_REST_JSONAPI_IDENTITY_NAME,
name_json);
json_decref (name_json);
GNUNET_JSONAPI_document_resource_add (json_document, json_resource);
break;
}
if (0 == GNUNET_JSONAPI_document_resource_count (json_document))
{
GNUNET_JSONAPI_document_delete (json_document);
handle->emsg = GNUNET_strdup("No identity matches results!");
GNUNET_SCHEDULER_add_now (&do_error, handle);
return;
}
GNUNET_JSONAPI_document_serialize (json_document, &result_str);
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Result %s\n", result_str);
resp = GNUNET_REST_create_response (result_str);
GNUNET_JSONAPI_document_delete (json_document);
handle->proc (handle->proc_cls, resp, MHD_HTTP_OK);
GNUNET_free (result_str);
cleanup_handle (handle);
}
/**
* Create a response with requested ego(s)
*
* @param con the Rest handle
* @param url the requested url
* @param cls the request handle
*/
static void
ego_info_response (struct GNUNET_REST_RequestHandle *con,
const char *url,
void *cls)
{
const char *egoname;
char *result_str;
char *subsys_val;
char *keystring;
struct RequestHandle *handle = cls;
struct EgoEntry *ego_entry;
struct GNUNET_HashCode key;
struct MHD_Response *resp;
struct GNUNET_JSONAPI_Document *json_document;
struct GNUNET_JSONAPI_Resource *json_resource;
json_t *name_str;
if (GNUNET_NO == GNUNET_REST_namespace_match (handle->url, GNUNET_REST_API_NS_IDENTITY))
{
resp = GNUNET_REST_create_response (NULL);
handle->proc (handle->proc_cls, resp, MHD_HTTP_BAD_REQUEST);
cleanup_handle (handle);
return;
}
egoname = NULL;
keystring = NULL;
if (strlen (GNUNET_REST_API_NS_IDENTITY) < strlen (handle->url))
{
keystring = &handle->url[strlen (GNUNET_REST_API_NS_IDENTITY)+1];
//Return all egos
for (ego_entry = handle->ego_head;
NULL != ego_entry;
ego_entry = ego_entry->next)
{
if ( (NULL != keystring) && (0 != strcmp (keystring, ego_entry->keystring)) )
continue;
egoname = ego_entry->identifier;
}
}
if ( NULL == egoname ) {
GNUNET_CRYPTO_hash (GNUNET_REST_JSONAPI_IDENTITY_SUBSYSTEM,
strlen (GNUNET_REST_JSONAPI_IDENTITY_SUBSYSTEM),
&key);
if ( GNUNET_YES ==
GNUNET_CONTAINER_multihashmap_contains (handle->conndata_handle->url_param_map,
&key) )
{
subsys_val = GNUNET_CONTAINER_multihashmap_get (handle->conndata_handle->url_param_map,
&key);
if (NULL != subsys_val)
{
GNUNET_asprintf (&handle->subsys, "%s", subsys_val);
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Looking for %s's ego\n", subsys_val);
handle->op = GNUNET_IDENTITY_get (handle->identity_handle,
handle->subsys,
&get_ego_for_subsys,
handle);
return;
}
}
}
json_document = GNUNET_JSONAPI_document_new ();
//Return all egos
for (ego_entry = handle->ego_head;
NULL != ego_entry;
ego_entry = ego_entry->next)
{
if ( (NULL != egoname) && (0 != strcmp (egoname, ego_entry->identifier)) )
continue;
json_resource = GNUNET_JSONAPI_resource_new (GNUNET_REST_JSONAPI_IDENTITY_EGO,
ego_entry->keystring);
name_str = json_string (ego_entry->identifier);
GNUNET_JSONAPI_resource_add_attr (
json_resource,
GNUNET_REST_JSONAPI_IDENTITY_NAME,
name_str);
json_decref (name_str);
GNUNET_JSONAPI_document_resource_add (json_document, json_resource);
}
if (0 == GNUNET_JSONAPI_document_resource_count (json_document))
{
GNUNET_JSONAPI_document_delete (json_document);
handle->emsg = GNUNET_strdup ("No identities found!");
GNUNET_SCHEDULER_add_now (&do_error, handle);
return;
}
GNUNET_JSONAPI_document_serialize (json_document, &result_str);
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Result %s\n", result_str);
resp = GNUNET_REST_create_response (result_str);
GNUNET_JSONAPI_document_delete (json_document);
handle->proc (handle->proc_cls, resp, MHD_HTTP_OK);
GNUNET_free (result_str);
cleanup_handle (handle);
}
/**
* Processing finished
*
* @param cls request handle
* @param emsg error message
*/
static void
do_finished (void *cls, const char *emsg)
{
struct RequestHandle *handle = cls;
struct MHD_Response *resp;
handle->op = NULL;
if (NULL != emsg)
{
handle->emsg = GNUNET_strdup (emsg);
GNUNET_SCHEDULER_add_now (&do_error, handle);
return;
}
resp = GNUNET_REST_create_response (NULL);
handle->proc (handle->proc_cls, resp, MHD_HTTP_NO_CONTENT);
cleanup_handle (handle);
}
/**
* Create a new ego
*
* @param con rest handle
* @param url url
* @param cls request handle
*/
static void
ego_create_cont (struct GNUNET_REST_RequestHandle *con,
const char *url,
void *cls)
{
struct RequestHandle *handle = cls;
struct EgoEntry *ego_entry;
struct MHD_Response *resp;
struct GNUNET_JSONAPI_Document *json_obj;
struct GNUNET_JSONAPI_Resource *json_res;
json_t *egoname_json;
json_t *data_js;
json_error_t err;
const char* egoname;
char term_data[handle->data_size+1];
struct GNUNET_JSON_Specification docspec[] = {
GNUNET_JSON_spec_jsonapi_document (&json_obj),
GNUNET_JSON_spec_end()
};
if (strlen (GNUNET_REST_API_NS_IDENTITY) != strlen (handle->url))
{
handle->emsg = GNUNET_strdup (GNUNET_REST_ERROR_RESOURCE_INVALID);
GNUNET_SCHEDULER_add_now (&do_error, handle);
return;
}
if (0 >= handle->data_size)
{
handle->emsg = GNUNET_strdup (GNUNET_REST_ERROR_NO_DATA);
GNUNET_SCHEDULER_add_now (&do_error, handle);
return;
}
term_data[handle->data_size] = '\0';
GNUNET_memcpy (term_data, handle->data, handle->data_size);
data_js = json_loads (term_data,
JSON_DECODE_ANY,
&err);
GNUNET_assert (NULL != data_js);
GNUNET_assert (GNUNET_OK ==
GNUNET_JSON_parse (data_js, docspec,
NULL, NULL));
json_decref (data_js);
if (NULL == json_obj)
{
GNUNET_SCHEDULER_add_now (&do_error, handle);
return;
}
if (1 != GNUNET_JSONAPI_document_resource_count (json_obj))
{
GNUNET_JSONAPI_document_delete (json_obj);
handle->emsg = GNUNET_strdup ("Provided resource count invalid");
GNUNET_SCHEDULER_add_now (&do_error, handle);
return;
}
json_res = GNUNET_JSONAPI_document_get_resource (json_obj, 0);
if (GNUNET_NO == GNUNET_JSONAPI_resource_check_type (json_res, GNUNET_REST_JSONAPI_IDENTITY_EGO))
{
GNUNET_JSONAPI_document_delete (json_obj);
resp = GNUNET_REST_create_response (NULL);
handle->proc (handle->proc_cls, resp, MHD_HTTP_CONFLICT);
cleanup_handle (handle);
return;
}
egoname_json = GNUNET_JSONAPI_resource_read_attr (json_res, GNUNET_REST_JSONAPI_IDENTITY_NAME);
if (!json_is_string (egoname_json))
{
GNUNET_JSONAPI_document_delete (json_obj);
handle->emsg = GNUNET_strdup ("No name provided");
GNUNET_SCHEDULER_add_now (&do_error, handle);
return;
}
egoname = json_string_value (egoname_json);
for (ego_entry = handle->ego_head;
NULL != ego_entry;
ego_entry = ego_entry->next)
{
if (0 == strcasecmp (egoname, ego_entry->identifier))
{
GNUNET_JSONAPI_document_delete (json_obj);
resp = GNUNET_REST_create_response (NULL);
handle->proc (handle->proc_cls, resp, MHD_HTTP_CONFLICT);
cleanup_handle (handle);
return;
}
}
GNUNET_asprintf (&handle->name, "%s", egoname);
GNUNET_JSONAPI_document_delete (json_obj);
handle->op = GNUNET_IDENTITY_create (handle->identity_handle,
handle->name,
&do_finished,
handle);
}
/**
* Handle ego edit request
*
* @param con rest connection handle
* @param url the url that is requested
* @param cls the RequestHandle
*/
static void
ego_edit_cont (struct GNUNET_REST_RequestHandle *con,
const char *url,
void *cls)
{
struct GNUNET_JSONAPI_Document *json_obj;
struct GNUNET_JSONAPI_Resource *json_res;
struct RequestHandle *handle = cls;
struct EgoEntry *ego_entry;
struct EgoEntry *ego_entry_tmp;
struct MHD_Response *resp;
json_t *subsys_json;
json_t *name_json;
json_t *data_js;
json_error_t err;
const char *keystring;
const char *subsys;
const char *newname;
char term_data[handle->data_size+1];
int ego_exists = GNUNET_NO;
struct GNUNET_JSON_Specification docspec[] = {
GNUNET_JSON_spec_jsonapi_document (&json_obj),
GNUNET_JSON_spec_end()
};
if (strlen (GNUNET_REST_API_NS_IDENTITY) > strlen (handle->url))
{
handle->emsg = GNUNET_strdup (GNUNET_REST_ERROR_RESOURCE_INVALID);
GNUNET_SCHEDULER_add_now (&do_error, handle);
return;
}
keystring = &handle->url[strlen(GNUNET_REST_API_NS_IDENTITY)+1];
for (ego_entry = handle->ego_head;
NULL != ego_entry;
ego_entry = ego_entry->next)
{
if (0 != strcasecmp (keystring, ego_entry->keystring))
continue;
ego_exists = GNUNET_YES;
break;
}
if (GNUNET_NO == ego_exists)
{
resp = GNUNET_REST_create_response (NULL);
handle->proc (handle->proc_cls, resp, MHD_HTTP_NOT_FOUND);
cleanup_handle (handle);
return;
}
if (0 >= handle->data_size)
{
handle->emsg = GNUNET_strdup (GNUNET_REST_ERROR_NO_DATA);
GNUNET_SCHEDULER_add_now (&do_error, handle);
return;
}
term_data[handle->data_size] = '\0';
GNUNET_memcpy (term_data, handle->data, handle->data_size);
data_js = json_loads (term_data,
JSON_DECODE_ANY,
&err);
GNUNET_assert (NULL != data_js);
GNUNET_assert (GNUNET_OK ==
GNUNET_JSON_parse (data_js, docspec,
NULL, NULL));
json_decref (data_js);
if (NULL == json_obj)
{
handle->emsg = GNUNET_strdup ("Data invalid");
GNUNET_SCHEDULER_add_now (&do_error, handle);
return;
}
if (1 != GNUNET_JSONAPI_document_resource_count (json_obj))
{
GNUNET_JSONAPI_document_delete (json_obj);
handle->emsg = GNUNET_strdup ("Resource amount invalid");
GNUNET_SCHEDULER_add_now (&do_error, handle);
return;
}
json_res = GNUNET_JSONAPI_document_get_resource (json_obj, 0);
if (GNUNET_NO == GNUNET_JSONAPI_resource_check_type (json_res, GNUNET_REST_JSONAPI_IDENTITY_EGO))
{
GNUNET_JSONAPI_document_delete (json_obj);
handle->emsg = GNUNET_strdup ("Resource type invalid");
GNUNET_SCHEDULER_add_now (&do_error, handle);
return;
}
//This is a rename
name_json = GNUNET_JSONAPI_resource_read_attr (json_res,
GNUNET_REST_JSONAPI_IDENTITY_NEWNAME);
if ((NULL != name_json) && json_is_string (name_json))
{
newname = json_string_value (name_json);
for (ego_entry_tmp = handle->ego_head;
NULL != ego_entry_tmp;
ego_entry_tmp = ego_entry_tmp->next)
{
if (0 == strcasecmp (newname, ego_entry_tmp->identifier) &&
0 != strcasecmp (keystring, ego_entry_tmp->keystring))
{
//Ego with same name not allowed
GNUNET_JSONAPI_document_delete (json_obj);
resp = GNUNET_REST_create_response (NULL);
handle->proc (handle->proc_cls, resp, MHD_HTTP_CONFLICT);
cleanup_handle (handle);
return;
}
}
handle->op = GNUNET_IDENTITY_rename (handle->identity_handle,
ego_entry->identifier,
newname,
&do_finished,
handle);
GNUNET_JSONAPI_document_delete (json_obj);
return;
}
//Set subsystem
subsys_json = GNUNET_JSONAPI_resource_read_attr (json_res, GNUNET_REST_JSONAPI_IDENTITY_SUBSYSTEM);
if ( (NULL != subsys_json) && json_is_string (subsys_json))
{
subsys = json_string_value (subsys_json);
GNUNET_asprintf (&handle->subsys, "%s", subsys);
GNUNET_JSONAPI_document_delete (json_obj);
handle->op = GNUNET_IDENTITY_set (handle->identity_handle,
handle->subsys,
ego_entry->ego,
&do_finished,
handle);
return;
}
GNUNET_JSONAPI_document_delete (json_obj);
handle->emsg = GNUNET_strdup ("Subsystem not provided");
GNUNET_SCHEDULER_add_now (&do_error, handle);
}
void
ego_delete_cont (struct GNUNET_REST_RequestHandle *con_handle,
const char* url,
void *cls)
{
const char *keystring;
struct EgoEntry *ego_entry;
struct MHD_Response *resp;
struct RequestHandle *handle = cls;
int ego_exists = GNUNET_NO;
if (strlen (GNUNET_REST_API_NS_IDENTITY) >= strlen (handle->url))
{
handle->emsg = GNUNET_strdup (GNUNET_REST_ERROR_RESOURCE_INVALID);
GNUNET_SCHEDULER_add_now (&do_error, handle);
return;
}
keystring = &handle->url[strlen(GNUNET_REST_API_NS_IDENTITY)+1];
for (ego_entry = handle->ego_head;
NULL != ego_entry;
ego_entry = ego_entry->next)
{
if (0 != strcasecmp (keystring, ego_entry->keystring))
continue;
ego_exists = GNUNET_YES;
break;
}
if (GNUNET_NO == ego_exists)
{
resp = GNUNET_REST_create_response (NULL);
handle->proc (handle->proc_cls, resp, MHD_HTTP_NOT_FOUND);
cleanup_handle (handle);
return;
}
handle->op = GNUNET_IDENTITY_delete (handle->identity_handle,
ego_entry->identifier,
&do_finished,
handle);
}
/**
* Respond to OPTIONS request
*
* @param con_handle the connection handle
* @param url the url
* @param cls the RequestHandle
*/
static void
options_cont (struct GNUNET_REST_RequestHandle *con_handle,
const char* url,
void *cls)
{
struct MHD_Response *resp;
struct RequestHandle *handle = cls;
//For now, independent of path return all options
resp = GNUNET_REST_create_response (NULL);
MHD_add_response_header (resp,
"Access-Control-Allow-Methods",
allow_methods);
handle->proc (handle->proc_cls, resp, MHD_HTTP_OK);
cleanup_handle (handle);
return;
}
/**
* Handle rest request
*
* @param handle the request handle
*/
static void
init_cont (struct RequestHandle *handle)
{
struct GNUNET_REST_RequestHandlerError err;
static const struct GNUNET_REST_RequestHandler handlers[] = {
{MHD_HTTP_METHOD_GET, GNUNET_REST_API_NS_IDENTITY, &ego_info_response},
{MHD_HTTP_METHOD_POST, GNUNET_REST_API_NS_IDENTITY, &ego_create_cont},
{MHD_HTTP_METHOD_PUT, GNUNET_REST_API_NS_IDENTITY, &ego_edit_cont},
{MHD_HTTP_METHOD_DELETE, GNUNET_REST_API_NS_IDENTITY, &ego_delete_cont},
{MHD_HTTP_METHOD_OPTIONS, GNUNET_REST_API_NS_IDENTITY, &options_cont},
GNUNET_REST_HANDLER_END
};
if (GNUNET_NO == GNUNET_JSONAPI_handle_request (handle->conndata_handle,
handlers,
&err,
handle))
{
handle->response_code = err.error_code;
GNUNET_SCHEDULER_add_now (&do_error, handle);
}
}
/**
* If listing is enabled, prints information about the egos.
*
* This function is initially called for all egos and then again
* whenever a ego's identifier changes or if it is deleted. At the
* end of the initial pass over all egos, the function is once called
* with 'NULL' for 'ego'. That does NOT mean that the callback won't
* be invoked in the future or that there was an error.
*
* When used with 'GNUNET_IDENTITY_create' or 'GNUNET_IDENTITY_get',
* this function is only called ONCE, and 'NULL' being passed in
* 'ego' does indicate an error (i.e. name is taken or no default
* value is known). If 'ego' is non-NULL and if '*ctx'
* is set in those callbacks, the value WILL be passed to a subsequent
* call to the identity callback of 'GNUNET_IDENTITY_connect' (if
* that one was not NULL).
*
* When an identity is renamed, this function is called with the
* (known) ego but the NEW identifier.
*
* When an identity is deleted, this function is called with the
* (known) ego and "NULL" for the 'identifier'. In this case,
* the 'ego' is henceforth invalid (and the 'ctx' should also be
* cleaned up).
*
* @param cls closure
* @param ego ego handle
* @param ctx context for application to store data for this ego
* (during the lifetime of this process, initially NULL)
* @param identifier identifier assigned by the user for this ego,
* NULL if the user just deleted the ego and it
* must thus no longer be used
*/
static void
list_ego (void *cls,
struct GNUNET_IDENTITY_Ego *ego,
void **ctx,
const char *identifier)
{
struct RequestHandle *handle = cls;
struct EgoEntry *ego_entry;
struct GNUNET_CRYPTO_EcdsaPublicKey pk;
if ((NULL == ego) && (ID_REST_STATE_INIT == handle->state))
{
handle->state = ID_REST_STATE_POST_INIT;
init_cont (handle);
return;
}
if (ID_REST_STATE_INIT == handle->state) {
ego_entry = GNUNET_new (struct EgoEntry);
GNUNET_IDENTITY_ego_get_public_key (ego, &pk);
ego_entry->keystring =
GNUNET_CRYPTO_ecdsa_public_key_to_string (&pk);
ego_entry->ego = ego;
GNUNET_asprintf (&ego_entry->identifier, "%s", identifier);
GNUNET_CONTAINER_DLL_insert_tail(handle->ego_head,handle->ego_tail, ego_entry);
}
}
/**
* Function processing the REST call
*
* @param method HTTP method
* @param url URL of the HTTP request
* @param data body of the HTTP request (optional)
* @param data_size length of the body
* @param proc callback function for the result
* @param proc_cls closure for callback function
* @return GNUNET_OK if request accepted
*/
static void
rest_identity_process_request(struct GNUNET_REST_RequestHandle *conndata_handle,
GNUNET_REST_ResultProcessor proc,
void *proc_cls)
{
struct RequestHandle *handle = GNUNET_new (struct RequestHandle);
handle->timeout = GNUNET_TIME_UNIT_FOREVER_REL;
handle->proc_cls = proc_cls;
handle->proc = proc;
handle->state = ID_REST_STATE_INIT;
handle->conndata_handle = conndata_handle;
handle->data = conndata_handle->data;
handle->data_size = conndata_handle->data_size;
handle->method = conndata_handle->method;
GNUNET_asprintf (&handle->url, "%s", conndata_handle->url);
if (handle->url[strlen (handle->url)-1] == '/')
handle->url[strlen (handle->url)-1] = '\0';
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Connecting...\n");
handle->identity_handle = GNUNET_IDENTITY_connect (cfg,
&list_ego,
handle);
handle->timeout_task =
GNUNET_SCHEDULER_add_delayed (handle->timeout,
&do_error,
handle);
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Connected\n");
}
/**
* Entry point for the plugin.
*
* @param cls Config info
* @return NULL on error, otherwise the plugin context
*/
void *
libgnunet_plugin_rest_identity_init (void *cls)
{
static struct Plugin plugin;
struct GNUNET_REST_Plugin *api;
cfg = cls;
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_IDENTITY;
api->process_request = &rest_identity_process_request;
GNUNET_asprintf (&allow_methods,
"%s, %s, %s, %s, %s",
MHD_HTTP_METHOD_GET,
MHD_HTTP_METHOD_POST,
MHD_HTTP_METHOD_PUT,
MHD_HTTP_METHOD_DELETE,
MHD_HTTP_METHOD_OPTIONS);
GNUNET_log (GNUNET_ERROR_TYPE_INFO,
_("Identity REST API initialized\n"));
return api;
}
/**
* Exit point from the plugin.
*
* @param cls the plugin context (as returned by "init")
* @return always NULL
*/
void *
libgnunet_plugin_rest_identity_done (void *cls)
{
struct GNUNET_REST_Plugin *api = cls;
struct Plugin *plugin = api->cls;
plugin->cfg = NULL;
GNUNET_free_non_null (allow_methods);
GNUNET_free (api);
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Identity REST plugin is finished\n");
return NULL;
}
/* end of plugin_rest_gns.c */