This file is part of GNUnet.
Copyright (C) 2009-2013, 2016 GNUnet e.V.
- GNUnet is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published
- by the Free Software Foundation; either version 3, or (at your
- option) any later version.
+ 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
- General Public License for more details.
+ Affero General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with GNUnet; see the file COPYING. If not, write to the
- Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
- Boston, MA 02110-1301, USA.
-*/
+ You should have received a copy of the GNU Affero General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+ SPDX-License-Identifier: AGPL3.0-or-later
+ */
/**
* @file credential/credential_api.c
* @brief library to access the CREDENTIAL service
- * @author Adnan Husain
+ * @author Martin Schanzenbach
*/
#include "platform.h"
#include "gnunet_util_lib.h"
#include "gnunet_identity_service.h"
-#define LOG(kind,...) GNUNET_log_from (kind, "credential-api",__VA_ARGS__)
+#define LOG(kind, ...) GNUNET_log_from(kind, "credential-api", __VA_ARGS__)
/**
* Handle to a verify request
*/
-struct GNUNET_CREDENTIAL_Request
-{
-
+struct GNUNET_CREDENTIAL_Request {
/**
* DLL
*/
* request id
*/
uint32_t r_id;
-
};
/**
* Connection to the CREDENTIAL service.
*/
-struct GNUNET_CREDENTIAL_Handle
-{
-
+struct GNUNET_CREDENTIAL_Handle {
/**
* Configuration to use.
*/
* Request Id generator. Incremented by one for each request.
*/
uint32_t r_id_gen;
-
};
* @param handle the handle to the CREDENTIAL service
*/
static void
-reconnect (struct GNUNET_CREDENTIAL_Handle *handle);
+reconnect(struct GNUNET_CREDENTIAL_Handle *handle);
/**
* @param cls the handle
*/
static void
-reconnect_task (void *cls)
+reconnect_task(void *cls)
{
struct GNUNET_CREDENTIAL_Handle *handle = cls;
handle->reconnect_task = NULL;
- reconnect (handle);
+ reconnect(handle);
}
* @param handle our handle
*/
static void
-force_reconnect (struct GNUNET_CREDENTIAL_Handle *handle)
+force_reconnect(struct GNUNET_CREDENTIAL_Handle *handle)
{
- GNUNET_MQ_destroy (handle->mq);
+ GNUNET_MQ_destroy(handle->mq);
handle->mq = NULL;
handle->reconnect_backoff
- = GNUNET_TIME_STD_BACKOFF (handle->reconnect_backoff);
+ = GNUNET_TIME_STD_BACKOFF(handle->reconnect_backoff);
handle->reconnect_task
- = GNUNET_SCHEDULER_add_delayed (handle->reconnect_backoff,
- &reconnect_task,
- handle);
+ = GNUNET_SCHEDULER_add_delayed(handle->reconnect_backoff,
+ &reconnect_task,
+ handle);
}
* @param error error code
*/
static void
-mq_error_handler (void *cls,
- enum GNUNET_MQ_Error error)
+mq_error_handler(void *cls,
+ enum GNUNET_MQ_Error error)
{
struct GNUNET_CREDENTIAL_Handle *handle = cls;
- force_reconnect (handle);
+ force_reconnect(handle);
}
/**
* Check validity of message received from the CREDENTIAL service
*
* @param cls the `struct GNUNET_CREDENTIAL_Handle *`
- * @param loookup_msg the incoming message
+ * @param vr_msg the incoming message
*/
static int
-check_result (void *cls,
- const struct DelegationChainResultMessage *vr_msg)
+check_result(void *cls,
+ const struct DelegationChainResultMessage *vr_msg)
{
//TODO
return GNUNET_OK;
* Handler for messages received from the CREDENTIAL service
*
* @param cls the `struct GNUNET_CREDENTIAL_Handle *`
- * @param loookup_msg the incoming message
+ * @param vr_msg the incoming message
*/
static void
-handle_result (void *cls,
- const struct DelegationChainResultMessage *vr_msg)
+handle_result(void *cls,
+ const struct DelegationChainResultMessage *vr_msg)
{
struct GNUNET_CREDENTIAL_Handle *handle = cls;
- uint32_t r_id = ntohl (vr_msg->id);
+ uint32_t r_id = ntohl(vr_msg->id);
struct GNUNET_CREDENTIAL_Request *vr;
- size_t mlen = ntohs (vr_msg->header.size) - sizeof (*vr_msg);
- uint32_t d_count = ntohl (vr_msg->d_count);
- uint32_t c_count = ntohl (vr_msg->c_count);
+ size_t mlen = ntohs(vr_msg->header.size) - sizeof(*vr_msg);
+ uint32_t d_count = ntohl(vr_msg->d_count);
+ uint32_t c_count = ntohl(vr_msg->c_count);
struct GNUNET_CREDENTIAL_Delegation d_chain[d_count];
struct GNUNET_CREDENTIAL_Credential creds[c_count];
GNUNET_CREDENTIAL_CredentialResultProcessor proc;
void *proc_cls;
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Received verify reply from CREDENTIAL service\n");
+ LOG(GNUNET_ERROR_TYPE_DEBUG,
+ "Received verify reply from CREDENTIAL service\n");
for (vr = handle->request_head; NULL != vr; vr = vr->next)
if (vr->r_id == r_id)
break;
return;
proc = vr->verify_proc;
proc_cls = vr->proc_cls;
- GNUNET_CONTAINER_DLL_remove (handle->request_head,
- handle->request_tail,
- vr);
- GNUNET_MQ_discard (vr->env);
- GNUNET_free (vr);
- GNUNET_assert (GNUNET_OK ==
- GNUNET_CREDENTIAL_delegation_chain_deserialize (mlen,
- (const char*) &vr_msg[1],
- d_count,
- d_chain,
- c_count,
- creds));
- if (GNUNET_NO == ntohl (vr_msg->cred_found))
- {
- proc (proc_cls,
- 0,
- NULL,
- 0,
- NULL); // TODO
- } else {
- proc (proc_cls,
- d_count,
- d_chain,
- c_count,
- creds);
- }
+ GNUNET_CONTAINER_DLL_remove(handle->request_head,
+ handle->request_tail,
+ vr);
+ GNUNET_MQ_discard(vr->env);
+ GNUNET_free(vr);
+ GNUNET_assert(GNUNET_OK ==
+ GNUNET_CREDENTIAL_delegation_chain_deserialize(mlen,
+ (const char*)&vr_msg[1],
+ d_count,
+ d_chain,
+ c_count,
+ creds));
+ if (GNUNET_NO == ntohl(vr_msg->cred_found))
+ {
+ proc(proc_cls,
+ 0,
+ NULL,
+ 0,
+ NULL); // TODO
+ }
+ else
+ {
+ proc(proc_cls,
+ d_count,
+ d_chain,
+ c_count,
+ creds);
+ }
}
* @param handle the handle to the CREDENTIAL service
*/
static void
-reconnect (struct GNUNET_CREDENTIAL_Handle *handle)
+reconnect(struct GNUNET_CREDENTIAL_Handle *handle)
{
struct GNUNET_MQ_MessageHandler handlers[] = {
- GNUNET_MQ_hd_var_size (result,
- GNUNET_MESSAGE_TYPE_CREDENTIAL_VERIFY_RESULT,
- struct DelegationChainResultMessage,
- handle),
- GNUNET_MQ_hd_var_size (result,
- GNUNET_MESSAGE_TYPE_CREDENTIAL_COLLECT_RESULT,
- struct DelegationChainResultMessage,
- handle),
- GNUNET_MQ_handler_end ()
+ GNUNET_MQ_hd_var_size(result,
+ GNUNET_MESSAGE_TYPE_CREDENTIAL_VERIFY_RESULT,
+ struct DelegationChainResultMessage,
+ handle),
+ GNUNET_MQ_hd_var_size(result,
+ GNUNET_MESSAGE_TYPE_CREDENTIAL_COLLECT_RESULT,
+ struct DelegationChainResultMessage,
+ handle),
+ GNUNET_MQ_handler_end()
};
struct GNUNET_CREDENTIAL_Request *vr;
- GNUNET_assert (NULL == handle->mq);
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Trying to connect to CREDENTIAL\n");
- handle->mq = GNUNET_CLIENT_connect (handle->cfg,
- "credential",
- handlers,
- &mq_error_handler,
- handle);
+ GNUNET_assert(NULL == handle->mq);
+ LOG(GNUNET_ERROR_TYPE_DEBUG,
+ "Trying to connect to CREDENTIAL\n");
+ handle->mq = GNUNET_CLIENT_connect(handle->cfg,
+ "credential",
+ handlers,
+ &mq_error_handler,
+ handle);
if (NULL == handle->mq)
return;
for (vr = handle->request_head; NULL != vr; vr = vr->next)
- GNUNET_MQ_send_copy (handle->mq,
- vr->env);
+ GNUNET_MQ_send_copy(handle->mq,
+ vr->env);
}
* @return handle to the CREDENTIAL service, or NULL on error
*/
struct GNUNET_CREDENTIAL_Handle *
-GNUNET_CREDENTIAL_connect (const struct GNUNET_CONFIGURATION_Handle *cfg)
+GNUNET_CREDENTIAL_connect(const struct GNUNET_CONFIGURATION_Handle *cfg)
{
struct GNUNET_CREDENTIAL_Handle *handle;
- handle = GNUNET_new (struct GNUNET_CREDENTIAL_Handle);
+ handle = GNUNET_new(struct GNUNET_CREDENTIAL_Handle);
handle->cfg = cfg;
- reconnect (handle);
+ reconnect(handle);
if (NULL == handle->mq)
- {
- GNUNET_free (handle);
- return NULL;
- }
+ {
+ GNUNET_free(handle);
+ return NULL;
+ }
return handle;
}
* @param handle handle of the CREDENTIAL connection to stop
*/
void
-GNUNET_CREDENTIAL_disconnect (struct GNUNET_CREDENTIAL_Handle *handle)
+GNUNET_CREDENTIAL_disconnect(struct GNUNET_CREDENTIAL_Handle *handle)
{
if (NULL != handle->mq)
- {
- GNUNET_MQ_destroy (handle->mq);
- handle->mq = NULL;
- }
+ {
+ GNUNET_MQ_destroy(handle->mq);
+ handle->mq = NULL;
+ }
if (NULL != handle->reconnect_task)
- {
- GNUNET_SCHEDULER_cancel (handle->reconnect_task);
- handle->reconnect_task = NULL;
- }
- GNUNET_assert (NULL == handle->request_head);
- GNUNET_free (handle);
+ {
+ GNUNET_SCHEDULER_cancel(handle->reconnect_task);
+ handle->reconnect_task = NULL;
+ }
+ GNUNET_assert(NULL == handle->request_head);
+ GNUNET_free(handle);
}
* @param lr the verify request to cancel
*/
void
-GNUNET_CREDENTIAL_verify_cancel (struct GNUNET_CREDENTIAL_Request *vr)
+GNUNET_CREDENTIAL_request_cancel(struct GNUNET_CREDENTIAL_Request *lr)
{
- struct GNUNET_CREDENTIAL_Handle *handle = vr->credential_handle;
+ struct GNUNET_CREDENTIAL_Handle *handle = lr->credential_handle;
- GNUNET_CONTAINER_DLL_remove (handle->request_head,
- handle->request_tail,
- vr);
- GNUNET_MQ_discard (vr->env);
- GNUNET_free (vr);
+ GNUNET_CONTAINER_DLL_remove(handle->request_head,
+ handle->request_tail,
+ lr);
+ GNUNET_MQ_discard(lr->env);
+ GNUNET_free(lr);
}
/**
* Performs attribute collection.
- * Collects all credentials of subject to fulfill the
+ * Collects all credentials of subject to fulfill the
* attribute, if possible
*
* @param handle handle to the Credential service
* @param issuer_key the issuer public key
* @param issuer_attribute the issuer attribute
* @param subject_key the subject public key
- * @param credential_count number of credentials provided
- * @param credentials subject credentials
* @param proc function to call on result
* @param proc_cls closure for processor
* @return handle to the queued request
*/
struct GNUNET_CREDENTIAL_Request*
-GNUNET_CREDENTIAL_collect (struct GNUNET_CREDENTIAL_Handle *handle,
- const struct GNUNET_CRYPTO_EcdsaPublicKey *issuer_key,
- const char *issuer_attribute,
- const struct GNUNET_CRYPTO_EcdsaPrivateKey *subject_key,
- GNUNET_CREDENTIAL_CredentialResultProcessor proc,
- void *proc_cls)
+GNUNET_CREDENTIAL_collect(struct GNUNET_CREDENTIAL_Handle *handle,
+ const struct GNUNET_CRYPTO_EcdsaPublicKey *issuer_key,
+ const char *issuer_attribute,
+ const struct GNUNET_CRYPTO_EcdsaPrivateKey *subject_key,
+ GNUNET_CREDENTIAL_CredentialResultProcessor proc,
+ void *proc_cls)
{
/* IPC to shorten credential names, return shorten_handle */
struct CollectMessage *c_msg;
size_t nlen;
if (NULL == issuer_attribute)
- {
- GNUNET_break (0);
- return NULL;
- }
+ {
+ GNUNET_break(0);
+ return NULL;
+ }
//DEBUG LOG
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Trying to collect `%s' in CREDENTIAL\n",
- issuer_attribute);
- nlen = strlen (issuer_attribute) + 1;
- if (nlen >= GNUNET_MAX_MESSAGE_SIZE - sizeof (*vr))
- {
- GNUNET_break (0);
- return NULL;
- }
- vr = GNUNET_new (struct GNUNET_CREDENTIAL_Request);
+ LOG(GNUNET_ERROR_TYPE_DEBUG,
+ "Trying to collect `%s' in CREDENTIAL\n",
+ issuer_attribute);
+ nlen = strlen(issuer_attribute) + 1;
+ if (nlen >= GNUNET_MAX_MESSAGE_SIZE - sizeof(*vr))
+ {
+ GNUNET_break(0);
+ return NULL;
+ }
+ vr = GNUNET_new(struct GNUNET_CREDENTIAL_Request);
vr->credential_handle = handle;
vr->verify_proc = proc;
vr->proc_cls = proc_cls;
vr->r_id = handle->r_id_gen++;
- vr->env = GNUNET_MQ_msg_extra (c_msg,
- nlen,
- GNUNET_MESSAGE_TYPE_CREDENTIAL_COLLECT);
- c_msg->id = htonl (vr->r_id);
+ vr->env = GNUNET_MQ_msg_extra(c_msg,
+ nlen,
+ GNUNET_MESSAGE_TYPE_CREDENTIAL_COLLECT);
+ c_msg->id = htonl(vr->r_id);
c_msg->subject_key = *subject_key;
- c_msg->issuer_key = *issuer_key;
+ c_msg->issuer_key = *issuer_key;
c_msg->issuer_attribute_len = htons(strlen(issuer_attribute));
- GNUNET_memcpy (&c_msg[1],
- issuer_attribute,
- strlen (issuer_attribute));
- GNUNET_CONTAINER_DLL_insert (handle->request_head,
- handle->request_tail,
- vr);
+ GNUNET_memcpy(&c_msg[1],
+ issuer_attribute,
+ strlen(issuer_attribute));
+ GNUNET_CONTAINER_DLL_insert(handle->request_head,
+ handle->request_tail,
+ vr);
if (NULL != handle->mq)
- GNUNET_MQ_send_copy (handle->mq,
- vr->env);
+ GNUNET_MQ_send_copy(handle->mq,
+ vr->env);
return vr;
}
/**
* @return handle to the queued request
*/
struct GNUNET_CREDENTIAL_Request*
-GNUNET_CREDENTIAL_verify (struct GNUNET_CREDENTIAL_Handle *handle,
- const struct GNUNET_CRYPTO_EcdsaPublicKey *issuer_key,
- const char *issuer_attribute,
- const struct GNUNET_CRYPTO_EcdsaPublicKey *subject_key,
- uint32_t credential_count,
- const struct GNUNET_CREDENTIAL_Credential *credentials,
- GNUNET_CREDENTIAL_CredentialResultProcessor proc,
- void *proc_cls)
+GNUNET_CREDENTIAL_verify(struct GNUNET_CREDENTIAL_Handle *handle,
+ const struct GNUNET_CRYPTO_EcdsaPublicKey *issuer_key,
+ const char *issuer_attribute,
+ const struct GNUNET_CRYPTO_EcdsaPublicKey *subject_key,
+ uint32_t credential_count,
+ const struct GNUNET_CREDENTIAL_Credential *credentials,
+ GNUNET_CREDENTIAL_CredentialResultProcessor proc,
+ void *proc_cls)
{
/* IPC to shorten credential names, return shorten_handle */
struct VerifyMessage *v_msg;
size_t clen;
if (NULL == issuer_attribute || NULL == credentials)
- {
- GNUNET_break (0);
- return NULL;
- }
+ {
+ GNUNET_break(0);
+ return NULL;
+ }
- clen = GNUNET_CREDENTIAL_credentials_get_size (credential_count,
- credentials);
+ clen = GNUNET_CREDENTIAL_credentials_get_size(credential_count,
+ credentials);
//DEBUG LOG
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Trying to verify `%s' in CREDENTIAL\n",
- issuer_attribute);
- nlen = strlen (issuer_attribute) + 1 + clen;
- if (nlen >= GNUNET_MAX_MESSAGE_SIZE - sizeof (*vr))
- {
- GNUNET_break (0);
- return NULL;
- }
- vr = GNUNET_new (struct GNUNET_CREDENTIAL_Request);
+ LOG(GNUNET_ERROR_TYPE_DEBUG,
+ "Trying to verify `%s' in CREDENTIAL\n",
+ issuer_attribute);
+ nlen = strlen(issuer_attribute) + 1 + clen;
+ if (nlen >= GNUNET_MAX_MESSAGE_SIZE - sizeof(*vr))
+ {
+ GNUNET_break(0);
+ return NULL;
+ }
+ vr = GNUNET_new(struct GNUNET_CREDENTIAL_Request);
vr->credential_handle = handle;
vr->verify_proc = proc;
vr->proc_cls = proc_cls;
vr->r_id = handle->r_id_gen++;
- vr->env = GNUNET_MQ_msg_extra (v_msg,
- nlen,
- GNUNET_MESSAGE_TYPE_CREDENTIAL_VERIFY);
- v_msg->id = htonl (vr->r_id);
+ vr->env = GNUNET_MQ_msg_extra(v_msg,
+ nlen,
+ GNUNET_MESSAGE_TYPE_CREDENTIAL_VERIFY);
+ v_msg->id = htonl(vr->r_id);
v_msg->subject_key = *subject_key;
v_msg->c_count = htonl(credential_count);
- v_msg->issuer_key = *issuer_key;
+ v_msg->issuer_key = *issuer_key;
v_msg->issuer_attribute_len = htons(strlen(issuer_attribute));
- GNUNET_memcpy (&v_msg[1],
- issuer_attribute,
- strlen (issuer_attribute));
- GNUNET_CREDENTIAL_credentials_serialize (credential_count,
- credentials,
- clen,
- ((char*)&v_msg[1])
- + strlen (issuer_attribute) + 1);
- GNUNET_CONTAINER_DLL_insert (handle->request_head,
- handle->request_tail,
- vr);
+ GNUNET_memcpy(&v_msg[1],
+ issuer_attribute,
+ strlen(issuer_attribute));
+ GNUNET_CREDENTIAL_credentials_serialize(credential_count,
+ credentials,
+ clen,
+ ((char*)&v_msg[1])
+ + strlen(issuer_attribute) + 1);
+ GNUNET_CONTAINER_DLL_insert(handle->request_head,
+ handle->request_tail,
+ vr);
if (NULL != handle->mq)
- GNUNET_MQ_send_copy (handle->mq,
- vr->env);
+ GNUNET_MQ_send_copy(handle->mq,
+ vr->env);
return vr;
}
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