/*
This file is part of GNUnet.
- (C) 2013 Christian Grothoff (and other contributing authors)
+ Copyright (C) 2013 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
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., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA.
+ Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA.
*/
/**
*
* The purpose of this service is to manage private keys that
* represent the various egos/pseudonyms/identities of a GNUnet user.
+ *
+ * Todo:
+ * - auto-initialze default egos; maybe trigger default
+ * initializations (such as gnunet-gns-import.sh?)
*/
#include "platform.h"
#include "gnunet_util_lib.h"
/**
* We keep egos in a DLL.
- */
+ */
struct Ego *next;
/**
* We keep egos in a DLL.
- */
+ */
struct Ego *prev;
/**
* Private key of the ego.
*/
- struct GNUNET_CRYPTO_EccPrivateKey *pk;
+ struct GNUNET_CRYPTO_EcdsaPrivateKey *pk;
/**
* String identifier for the ego.
/**
* Notification context, simplifies client broadcasts.
*/
-static struct GNUNET_SERVER_NotificationContext *nc;
+static struct GNUNET_NotificationContext *nc;
/**
* Directory where we store the identities.
static struct Ego *ego_tail;
+/**
+ * Get the name of the file we use to store a given ego.
+ *
+ * @param ego ego for which we need the filename
+ * @return full filename for the given ego
+ */
+static char *
+get_ego_filename (struct Ego *ego)
+{
+ char *filename;
+
+ GNUNET_asprintf (&filename,
+ "%s%s%s",
+ ego_directory,
+ DIR_SEPARATOR_STR,
+ ego->identifier);
+ return filename;
+}
+
+/**
+ * Called whenever a client is disconnected.
+ *
+ * @param cls closure
+ * @param client identification of the client
+ * @param app_ctx @a client
+ */
+static void
+client_disconnect_cb (void *cls,
+ struct GNUNET_SERVICE_Client *client,
+ void *app_ctx)
+{
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Client %p disconnected\n",
+ client);
+}
+
+
+/**
+ * Add a client to our list of active clients.
+ *
+ * @param cls NULL
+ * @param client client to add
+ * @param mq message queue for @a client
+ * @return internal namestore client structure for this client
+ */
+static void *
+client_connect_cb (void *cls,
+ struct GNUNET_SERVICE_Client *client,
+ struct GNUNET_MQ_Handle *mq)
+{
+ return client;
+}
+
/**
* Task run during shutdown.
*
* @param cls unused
- * @param tc unused
*/
static void
-shutdown_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+shutdown_task (void *cls)
{
struct Ego *e;
if (NULL != nc)
{
- GNUNET_SERVER_notification_context_destroy (nc);
+ GNUNET_notification_context_destroy (nc);
nc = NULL;
}
if (NULL != stats)
while (NULL != (e = ego_head))
{
GNUNET_CONTAINER_DLL_remove (ego_head, ego_tail, e);
- GNUNET_CRYPTO_ecc_key_free (e->pk);
+ GNUNET_free (e->pk);
+ GNUNET_free (e->identifier);
GNUNET_free (e);
}
}
* @param emsg error message to include (or NULL for none)
*/
static void
-send_result_code (struct GNUNET_SERVER_Client *client,
+send_result_code (struct GNUNET_SERVICE_Client *client,
uint32_t result_code,
const char *emsg)
{
- struct GNUNET_IDENTITY_ResultCodeMessage *rcm;
+ struct ResultCodeMessage *rcm;
+ struct GNUNET_MQ_Envelope *env;
size_t elen;
if (NULL == emsg)
elen = 0;
else
elen = strlen (emsg) + 1;
- rcm = GNUNET_malloc (sizeof (struct GNUNET_IDENTITY_ResultCodeMessage) + elen);
- rcm->header.type = htons (GNUNET_MESSAGE_TYPE_IDENTITY_RESULT_CODE);
- rcm->header.size = htons (sizeof (struct GNUNET_IDENTITY_ResultCodeMessage) + elen);
+ env = GNUNET_MQ_msg_extra (rcm,
+ elen,
+ GNUNET_MESSAGE_TYPE_IDENTITY_RESULT_CODE);
rcm->result_code = htonl (result_code);
- memcpy (&rcm[1], emsg, elen);
- GNUNET_SERVER_notification_context_unicast (nc, client, &rcm->header, GNUNET_YES);
- GNUNET_free (rcm);
+ if (0 < elen)
+ GNUNET_memcpy (&rcm[1], emsg, elen);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Sending result %d (%s) to client\n",
+ (int) result_code,
+ emsg);
+ GNUNET_MQ_send (GNUNET_SERVICE_client_get_mq (client), env);
}
* @param ego ego to create message for
* @return corresponding update message
*/
-static struct GNUNET_IDENTITY_UpdateMessage *
+static struct GNUNET_MQ_Envelope *
create_update_message (struct Ego *ego)
{
- struct GNUNET_IDENTITY_UpdateMessage *um;
- char *str;
- uint16_t pk_len;
+ struct UpdateMessage *um;
+ struct GNUNET_MQ_Envelope *env;
size_t name_len;
- struct GNUNET_CRYPTO_EccPrivateKeyBinaryEncoded *enc;
name_len = (NULL == ego->identifier) ? 0 : (strlen (ego->identifier) + 1);
- enc = GNUNET_CRYPTO_ecc_encode_key (ego->pk);
- pk_len = ntohs (enc->size);
- um = GNUNET_malloc (sizeof (struct GNUNET_IDENTITY_UpdateMessage) + pk_len + name_len);
- um->header.type = htons (GNUNET_MESSAGE_TYPE_IDENTITY_UPDATE);
- um->header.size = htons (sizeof (struct GNUNET_IDENTITY_UpdateMessage) + pk_len + name_len);
+ env = GNUNET_MQ_msg_extra (um,
+ name_len,
+ GNUNET_MESSAGE_TYPE_IDENTITY_UPDATE);
um->name_len = htons (name_len);
- um->pk_len = htons (pk_len);
- str = (char *) &um[1];
- memcpy (str, enc, pk_len);
- memcpy (&str[pk_len], ego->identifier, name_len);
- GNUNET_free (enc);
- return um;
+ um->end_of_list = htons (GNUNET_NO);
+ um->private_key = *ego->pk;
+ GNUNET_memcpy (&um[1], ego->identifier, name_len);
+ return env;
+}
+
+
+/**
+ * Create a set default message with information about the current state of an ego.
+ *
+ * @param ego ego to create message for
+ * @param servicename name of the service to provide in the message
+ * @return corresponding set default message
+ */
+static struct GNUNET_MQ_Envelope *
+create_set_default_message (struct Ego *ego,
+ const char *servicename)
+{
+ struct SetDefaultMessage *sdm;
+ struct GNUNET_MQ_Envelope *env;
+ size_t name_len;
+
+ name_len = (NULL == servicename) ? 0 : (strlen (servicename) + 1);
+ env = GNUNET_MQ_msg_extra (sdm,
+ name_len,
+ GNUNET_MESSAGE_TYPE_IDENTITY_SET_DEFAULT);
+ sdm->name_len = htons (name_len);
+ sdm->reserved = htons (0);
+ sdm->private_key = *ego->pk;
+ GNUNET_memcpy (&sdm[1], servicename, name_len);
+ return env;
}
/**
* Handler for START message from client, sends information
- * about all identities to the client immediately and
+ * about all identities to the client immediately and
* adds the client to the notification context for future
* updates.
*
* @param message the message received
*/
static void
-handle_start_message (void *cls, struct GNUNET_SERVER_Client *client,
+handle_start_message (void *cls,
const struct GNUNET_MessageHeader *message)
{
- struct GNUNET_IDENTITY_UpdateMessage *um;
+ struct UpdateMessage *ume;
+ struct GNUNET_SERVICE_Client *client = cls;
+ struct GNUNET_MQ_Envelope *env;
struct Ego *ego;
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Received START message from client\n");
- GNUNET_SERVER_notification_context_add (nc, client);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Received START message from client\n");
+ GNUNET_SERVICE_client_mark_monitor (client);
+ GNUNET_SERVICE_client_disable_continue_warning (client);
+ GNUNET_notification_context_add (nc,
+ GNUNET_SERVICE_client_get_mq(client));
for (ego = ego_head; NULL != ego; ego = ego->next)
{
- um = create_update_message (ego);
- GNUNET_SERVER_notification_context_unicast (nc, client, &um->header, GNUNET_YES);
- GNUNET_free (um);
+ env = create_update_message (ego);
+ GNUNET_MQ_send (GNUNET_SERVICE_client_get_mq(client), env);
+ }
+ env = GNUNET_MQ_msg_extra (ume,
+ 0,
+ GNUNET_MESSAGE_TYPE_IDENTITY_UPDATE);
+ ume->end_of_list = htons (GNUNET_YES);
+ ume->name_len = htons (0);
+ GNUNET_MQ_send (GNUNET_SERVICE_client_get_mq(client), env);
+ GNUNET_SERVICE_client_continue (client);
+}
+
+/**
+ * Checks a #GNUNET_MESSAGE_TYPE_IDENTITY_GET_DEFAULT message
+ *
+ * @param cls client sending the message
+ * @param msg message of type `struct GetDefaultMessage`
+ * @return #GNUNET_OK if @a msg is well-formed
+ */
+static int
+check_get_default_message (void *cls,
+ const struct GetDefaultMessage *msg)
+{
+ uint16_t size;
+ uint16_t name_len;
+ const char *name;
+
+ size = ntohs (msg->header.size);
+ if (size <= sizeof (struct GetDefaultMessage))
+ {
+ GNUNET_break (0);
+ return GNUNET_SYSERR;
+ }
+ name = (const char *) &msg[1];
+ name_len = ntohs (msg->name_len);
+ if ( (name_len + sizeof (struct GetDefaultMessage) != size) ||
+ (0 != ntohs (msg->reserved)) ||
+ ('\0' != name[name_len - 1]) )
+ {
+ GNUNET_break (0);
+ return GNUNET_SYSERR;
}
- GNUNET_SERVER_receive_done (client, GNUNET_OK);
+ return GNUNET_OK;
}
* @param message the message received
*/
static void
-handle_get_default_message (void *cls, struct GNUNET_SERVER_Client *client,
- const struct GNUNET_MessageHeader *message)
+handle_get_default_message (void *cls,
+ const struct GetDefaultMessage *gdm)
{
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Received GET_DEFAULT message from client\n");
- // setup_estimate_message (&em);
- // GNUNET_SERVER_notification_context_unicast (nc, client, &em.header, GNUNET_YES);
- GNUNET_break (0); // not implemented!
- GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
+ struct GNUNET_MQ_Envelope *env;
+ struct GNUNET_SERVICE_Client *client = cls;
+ struct Ego *ego;
+ const char *name;
+ char *identifier;
+
+
+ name = (const char *) &gdm[1];
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Received GET_DEFAULT for service `%s' from client\n",
+ name);
+ if (GNUNET_OK !=
+ GNUNET_CONFIGURATION_get_value_string (subsystem_cfg,
+ name,
+ "DEFAULT_IDENTIFIER",
+ &identifier))
+ {
+ send_result_code (client, 1, gettext_noop ("no default known"));
+ GNUNET_SERVICE_client_continue (client);
+ return;
+ }
+ for (ego = ego_head; NULL != ego; ego = ego->next)
+ {
+ if (0 == strcmp (ego->identifier,
+ identifier))
+ {
+ env = create_set_default_message (ego,
+ name);
+ GNUNET_MQ_send (GNUNET_SERVICE_client_get_mq (client), env);
+ GNUNET_SERVICE_client_continue (client);
+ GNUNET_free (identifier);
+ return;
+ }
+ }
+ GNUNET_free (identifier);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Failed to find ego `%s'\n",
+ name);
+ send_result_code (client, 1,
+ gettext_noop ("default configured, but ego unknown (internal error)"));
+ GNUNET_SERVICE_client_continue (client);
}
+/**
+ * Compare the given two private keys for equality.
+ *
+ * @param pk1 one private key
+ * @param pk2 another private key
+ * @return 0 if the keys are equal
+ */
+static int
+key_cmp (const struct GNUNET_CRYPTO_EcdsaPrivateKey *pk1,
+ const struct GNUNET_CRYPTO_EcdsaPrivateKey *pk2)
+{
+ return memcmp (pk1, pk2, sizeof (struct GNUNET_CRYPTO_EcdsaPrivateKey));
+}
+
+/**
+ * Checks a #GNUNET_MESSAGE_TYPE_IDENTITY_SET_DEFAULT message
+ *
+ * @param cls client sending the message
+ * @param msg message of type `struct SetDefaultMessage`
+ * @return #GNUNET_OK if @a msg is well-formed
+ */
+static int
+check_set_default_message (void *cls,
+ const struct SetDefaultMessage *msg)
+{
+ uint16_t size;
+ uint16_t name_len;
+ const char *str;
+
+ size = ntohs (msg->header.size);
+ if (size <= sizeof (struct SetDefaultMessage))
+ {
+ GNUNET_break (0);
+ return GNUNET_SYSERR;
+ }
+ name_len = ntohs (msg->name_len);
+ GNUNET_break (0 == ntohs (msg->reserved));
+ if (name_len + sizeof (struct SetDefaultMessage) != size)
+ {
+ GNUNET_break (0);
+ return GNUNET_SYSERR;
+ }
+ str = (const char *) &msg[1];
+ if ('\0' != str[name_len - 1])
+ {
+ GNUNET_break (0);
+ return GNUNET_SYSERR;
+ }
+ return GNUNET_OK;
+}
+
/**
* Handler for SET_DEFAULT message from client, updates
* default identity for some service.
* @param message the message received
*/
static void
-handle_set_default_message (void *cls, struct GNUNET_SERVER_Client *client,
- const struct GNUNET_MessageHeader *message)
+handle_set_default_message (void *cls,
+ const struct SetDefaultMessage *sdm)
{
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Received SET_DEFAULT message from client\n");
- // setup_estimate_message (&em);
- // GNUNET_SERVER_notification_context_unicast (nc, client, &em.header, GNUNET_YES);
- GNUNET_break (0); // not implemented!
- GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
+ struct Ego *ego;
+ struct GNUNET_SERVICE_Client *client = cls;
+ const char *str;
+
+ str = (const char *) &sdm[1];
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Received SET_DEFAULT for service `%s' from client\n",
+ str);
+ for (ego = ego_head; NULL != ego; ego = ego->next)
+ {
+ if (0 == key_cmp (ego->pk,
+ &sdm->private_key))
+ {
+ GNUNET_CONFIGURATION_set_value_string (subsystem_cfg,
+ str,
+ "DEFAULT_IDENTIFIER",
+ ego->identifier);
+ if (GNUNET_OK !=
+ GNUNET_CONFIGURATION_write (subsystem_cfg,
+ subsystem_cfg_file))
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("Failed to write subsystem default identifier map to `%s'.\n"),
+ subsystem_cfg_file);
+ send_result_code (client, 0, NULL);
+ GNUNET_SERVICE_client_continue (client);
+ return;
+ }
+ }
+ send_result_code (client, 1, _("Unknown ego specified for service (internal error)"));
+ GNUNET_SERVICE_client_continue (client);
}
+/**
+ * Send an updated message for the given ego to all listeners.
+ *
+ * @param ego ego to send the update for
+ */
+static void
+notify_listeners (struct Ego *ego)
+{
+ struct UpdateMessage *um;
+ size_t name_len;
+
+ name_len = (NULL == ego->identifier) ? 0 : (strlen (ego->identifier) + 1);
+ um = GNUNET_malloc (sizeof (struct UpdateMessage) + name_len);
+ um->header.type = htons (GNUNET_MESSAGE_TYPE_IDENTITY_UPDATE);
+ um->header.size = htons (sizeof (struct UpdateMessage) + name_len);
+ um->name_len = htons (name_len);
+ um->end_of_list = htons (GNUNET_NO);
+ um->private_key = *ego->pk;
+ GNUNET_memcpy (&um[1], ego->identifier, name_len);
+ GNUNET_notification_context_broadcast (nc,
+ &um->header,
+ GNUNET_NO);
+ GNUNET_free (um);
+}
+
+/**
+ * Checks a #GNUNET_MESSAGE_TYPE_IDENTITY_CREATE message
+ *
+ * @param cls client sending the message
+ * @param msg message of type `struct CreateRequestMessage`
+ * @return #GNUNET_OK if @a msg is well-formed
+ */
+static int
+check_create_message (void *cls,
+ const struct CreateRequestMessage *msg)
+{
+
+ uint16_t size;
+ uint16_t name_len;
+ const char *str;
+
+ size = ntohs (msg->header.size);
+ if (size <= sizeof (struct CreateRequestMessage))
+ {
+ GNUNET_break (0);
+ return GNUNET_SYSERR;
+ }
+ name_len = ntohs (msg->name_len);
+ GNUNET_break (0 == ntohs (msg->reserved));
+ if (name_len + sizeof (struct CreateRequestMessage) != size)
+ {
+ GNUNET_break (0);
+ return GNUNET_SYSERR;
+ }
+ str = (const char *) &msg[1];
+ if ('\0' != str[name_len - 1])
+ {
+ GNUNET_break (0);
+ return GNUNET_SYSERR;
+ }
+ return GNUNET_OK;
+}
+
/**
* Handler for CREATE message from client, creates
* new identity.
* @param message the message received
*/
static void
-handle_create_message (void *cls, struct GNUNET_SERVER_Client *client,
- const struct GNUNET_MessageHeader *message)
+handle_create_message (void *cls,
+ const struct CreateRequestMessage *crm)
+{
+ struct GNUNET_SERVICE_Client *client = cls;
+ struct Ego *ego;
+ const char *str;
+ char *fn;
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Received CREATE message from client\n");
+ str = (const char *) &crm[1];
+ for (ego = ego_head; NULL != ego; ego = ego->next)
+ {
+ if (0 == strcmp (ego->identifier,
+ str))
+ {
+ send_result_code (client, 1, gettext_noop ("identifier already in use for another ego"));
+ GNUNET_SERVICE_client_continue (client);
+ return;
+ }
+ }
+ ego = GNUNET_new (struct Ego);
+ ego->pk = GNUNET_new (struct GNUNET_CRYPTO_EcdsaPrivateKey);
+ *ego->pk = crm->private_key;
+ ego->identifier = GNUNET_strdup (str);
+ GNUNET_CONTAINER_DLL_insert (ego_head,
+ ego_tail,
+ ego);
+ send_result_code (client, 0, NULL);
+ fn = get_ego_filename (ego);
+ (void) GNUNET_DISK_directory_create_for_file (fn);
+ if (sizeof (struct GNUNET_CRYPTO_EcdsaPrivateKey) !=
+ GNUNET_DISK_fn_write (fn,
+ &crm->private_key,
+ sizeof (struct GNUNET_CRYPTO_EcdsaPrivateKey),
+ GNUNET_DISK_PERM_USER_READ |
+ GNUNET_DISK_PERM_USER_WRITE))
+ GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_ERROR,
+ "write", fn);
+ GNUNET_free (fn);
+ notify_listeners (ego);
+ GNUNET_SERVICE_client_continue (client);
+}
+
+
+/**
+ * Closure for 'handle_ego_rename'.
+ */
+struct RenameContext
+{
+ /**
+ * Old name.
+ */
+ const char *old_name;
+
+ /**
+ * New name.
+ */
+ const char *new_name;
+};
+
+/**
+ * An ego was renamed; rename it in all subsystems where it is
+ * currently set as the default.
+ *
+ * @param cls the 'struct RenameContext'
+ * @param section a section in the configuration to process
+ */
+static void
+handle_ego_rename (void *cls,
+ const char *section)
{
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Received CREATE message from client\n");
- // setup_estimate_message (&em);
- // GNUNET_SERVER_notification_context_unicast (nc, client, &em.header, GNUNET_YES);
- GNUNET_break (0); // not implemented!
- GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
+ struct RenameContext *rc = cls;
+ char *id;
+
+ if (GNUNET_OK !=
+ GNUNET_CONFIGURATION_get_value_string (subsystem_cfg,
+ section,
+ "DEFAULT_IDENTIFIER",
+ &id))
+ return;
+ if (0 != strcmp (id, rc->old_name))
+ {
+ GNUNET_free (id);
+ return;
+ }
+ GNUNET_CONFIGURATION_set_value_string (subsystem_cfg,
+ section,
+ "DEFAULT_IDENTIFIER",
+ rc->new_name);
+ GNUNET_free (id);
}
+/**
+ * Checks a #GNUNET_MESSAGE_TYPE_IDENTITY_RENAME message
+ *
+ * @param cls client sending the message
+ * @param msg message of type `struct RenameMessage`
+ * @return #GNUNET_OK if @a msg is well-formed
+ */
+static int
+check_rename_message (void *cls,
+ const struct RenameMessage *msg)
+{
+ uint16_t size;
+ uint16_t old_name_len;
+ uint16_t new_name_len;
+ const char *old_name;
+ const char *new_name;
+
+ size = ntohs (msg->header.size);
+ if (size <= sizeof (struct RenameMessage))
+ {
+ GNUNET_break (0);
+ return GNUNET_SYSERR;
+ }
+ old_name_len = ntohs (msg->old_name_len);
+ new_name_len = ntohs (msg->new_name_len);
+ old_name = (const char *) &msg[1];
+ new_name = &old_name[old_name_len];
+ if ( (old_name_len + new_name_len + sizeof (struct RenameMessage) != size) ||
+ ('\0' != old_name[old_name_len - 1]) ||
+ ('\0' != new_name[new_name_len - 1]) )
+ {
+ GNUNET_break (0);
+ return GNUNET_SYSERR;
+ }
+ return GNUNET_OK;
+}
+
/**
* Handler for RENAME message from client, creates
* @param message the message received
*/
static void
-handle_rename_message (void *cls, struct GNUNET_SERVER_Client *client,
- const struct GNUNET_MessageHeader *message)
+handle_rename_message (void *cls,
+ const struct RenameMessage *rm)
+{
+ uint16_t old_name_len;
+ struct Ego *ego;
+ const char *old_name;
+ const char *new_name;
+ struct RenameContext rename_ctx;
+ struct GNUNET_SERVICE_Client *client = cls;
+ char *fn_old;
+ char *fn_new;
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Received RENAME message from client\n");
+ old_name_len = ntohs (rm->old_name_len);
+ old_name = (const char *) &rm[1];
+ new_name = &old_name[old_name_len];
+
+ /* check if new name is already in use */
+ for (ego = ego_head; NULL != ego; ego = ego->next)
+ {
+ if (0 == strcmp (ego->identifier,
+ new_name))
+ {
+ send_result_code (client, 1, gettext_noop ("target name already exists"));
+ GNUNET_SERVICE_client_continue (client);
+ return;
+ }
+ }
+
+ /* locate old name and, if found, perform rename */
+ for (ego = ego_head; NULL != ego; ego = ego->next)
+ {
+ if (0 == strcmp (ego->identifier,
+ old_name))
+ {
+ fn_old = get_ego_filename (ego);
+ GNUNET_free (ego->identifier);
+ rename_ctx.old_name = old_name;
+ rename_ctx.new_name = new_name;
+ GNUNET_CONFIGURATION_iterate_sections (subsystem_cfg,
+ &handle_ego_rename,
+ &rename_ctx);
+ if (GNUNET_OK !=
+ GNUNET_CONFIGURATION_write (subsystem_cfg,
+ subsystem_cfg_file))
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("Failed to write subsystem default identifier map to `%s'.\n"),
+ subsystem_cfg_file);
+ ego->identifier = GNUNET_strdup (new_name);
+ fn_new = get_ego_filename (ego);
+ if (0 != RENAME (fn_old, fn_new))
+ GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, "rename", fn_old);
+ GNUNET_free (fn_old);
+ GNUNET_free (fn_new);
+ notify_listeners (ego);
+ send_result_code (client, 0, NULL);
+ GNUNET_SERVICE_client_continue (client);
+ return;
+ }
+ }
+
+ /* failed to locate old name */
+ send_result_code (client, 1, gettext_noop ("no matching ego found"));
+ GNUNET_SERVICE_client_continue (client);
+}
+
+
+/**
+ * An ego was removed, remove it from all subsystems where it is
+ * currently set as the default.
+ *
+ * @param cls name of the removed ego (const char *)
+ * @param section a section in the configuration to process
+ */
+static void
+handle_ego_delete (void *cls,
+ const char *section)
+{
+ const char *identifier = cls;
+ char *id;
+
+ if (GNUNET_OK !=
+ GNUNET_CONFIGURATION_get_value_string (subsystem_cfg,
+ section,
+ "DEFAULT_IDENTIFIER",
+ &id))
+ return;
+ if (0 != strcmp (id, identifier))
+ {
+ GNUNET_free (id);
+ return;
+ }
+ GNUNET_CONFIGURATION_set_value_string (subsystem_cfg,
+ section,
+ "DEFAULT_IDENTIFIER",
+ NULL);
+ GNUNET_free (id);
+}
+
+/**
+ * Checks a #GNUNET_MESSAGE_TYPE_IDENTITY_DELETE message
+ *
+ * @param cls client sending the message
+ * @param msg message of type `struct DeleteMessage`
+ * @return #GNUNET_OK if @a msg is well-formed
+ */
+static int
+check_delete_message (void *cls,
+ const struct DeleteMessage *msg)
{
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Received RENAME message from client\n");
- // setup_estimate_message (&em);
- // GNUNET_SERVER_notification_context_unicast (nc, client, &em.header, GNUNET_YES);
- GNUNET_break (0); // not implemented!
- GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
+ uint16_t size;
+ uint16_t name_len;
+ const char *name;
+
+ size = ntohs (msg->header.size);
+ if (size <= sizeof (struct DeleteMessage))
+ {
+ GNUNET_break (0);
+ return GNUNET_SYSERR;
+ }
+ name = (const char *) &msg[1];
+ name_len = ntohs (msg->name_len);
+ if ( (name_len + sizeof (struct DeleteMessage) != size) ||
+ (0 != ntohs (msg->reserved)) ||
+ ('\0' != name[name_len - 1]) )
+ {
+ GNUNET_break (0);
+ return GNUNET_SYSERR;
+ }
+ return GNUNET_OK;
}
* @param message the message received
*/
static void
-handle_delete_message (void *cls, struct GNUNET_SERVER_Client *client,
- const struct GNUNET_MessageHeader *message)
+handle_delete_message (void *cls,
+ const struct DeleteMessage *dm)
{
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Received DELETE message from client\n");
- // setup_estimate_message (&em);
- // GNUNET_SERVER_notification_context_unicast (nc, client, &em.header, GNUNET_YES);
- GNUNET_break (0); // not implemented!
+ struct Ego *ego;
+ const char *name;
+ char *fn;
+ struct GNUNET_SERVICE_Client *client = cls;
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Received DELETE message from client\n");
+ name = (const char *) &dm[1];
+ for (ego = ego_head; NULL != ego; ego = ego->next)
+ {
+ if (0 == strcmp (ego->identifier,
+ name))
+ {
+ GNUNET_CONTAINER_DLL_remove (ego_head,
+ ego_tail,
+ ego);
+ GNUNET_CONFIGURATION_iterate_sections (subsystem_cfg,
+ &handle_ego_delete,
+ ego->identifier);
+ if (GNUNET_OK !=
+ GNUNET_CONFIGURATION_write (subsystem_cfg,
+ subsystem_cfg_file))
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("Failed to write subsystem default identifier map to `%s'.\n"),
+ subsystem_cfg_file);
+ fn = get_ego_filename (ego);
+ if (0 != UNLINK (fn))
+ GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, "unlink", fn);
+ GNUNET_free (fn);
+ GNUNET_free (ego->identifier);
+ ego->identifier = NULL;
+ notify_listeners (ego);
+ GNUNET_free (ego->pk);
+ GNUNET_free (ego);
+ send_result_code (client, 0, NULL);
+ GNUNET_SERVICE_client_continue (client);
+ return;
+ }
+ }
send_result_code (client, 1, gettext_noop ("no matching ego found"));
- GNUNET_SERVER_receive_done (client, GNUNET_OK);
+ GNUNET_SERVICE_client_continue (client);
+}
+
+
+/**
+ * Process the given file from the "EGODIR". Parses the file
+ * and creates the respective 'struct Ego' in memory.
+ *
+ * @param cls NULL
+ * @param filename name of the file to parse
+ * @return #GNUNET_OK to continue to iterate,
+ * #GNUNET_NO to stop iteration with no error,
+ * #GNUNET_SYSERR to abort iteration with error!
+ */
+static int
+process_ego_file (void *cls,
+ const char *filename)
+{
+ struct Ego *ego;
+ const char *fn;
+
+ fn = strrchr (filename, (int) DIR_SEPARATOR);
+ if (NULL == fn)
+ {
+ GNUNET_break (0);
+ return GNUNET_OK;
+ }
+ ego = GNUNET_new (struct Ego);
+ ego->pk = GNUNET_CRYPTO_ecdsa_key_create_from_file (filename);
+ if (NULL == ego->pk)
+ {
+ GNUNET_free (ego);
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ _("Failed to parse ego information in `%s'\n"),
+ filename);
+ return GNUNET_OK;
+ }
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Loaded ego `%s'\n",
+ fn + 1);
+ ego->identifier = GNUNET_strdup (fn + 1);
+ GNUNET_CONTAINER_DLL_insert (ego_head,
+ ego_tail,
+ ego);
+ return GNUNET_OK;
}
* @param c configuration to use
*/
static void
-run (void *cls,
- struct GNUNET_SERVER_Handle *server,
- const struct GNUNET_CONFIGURATION_Handle *c)
+run (void *cls,
+ const struct GNUNET_CONFIGURATION_Handle *c,
+ struct GNUNET_SERVICE_Handle *service)
{
- static const struct GNUNET_SERVER_MessageHandler handlers[] = {
- {&handle_start_message, NULL,
- GNUNET_MESSAGE_TYPE_IDENTITY_START, sizeof (struct GNUNET_MessageHeader)},
- {&handle_get_default_message, NULL,
- GNUNET_MESSAGE_TYPE_IDENTITY_GET_DEFAULT, 0},
- {&handle_set_default_message, NULL,
- GNUNET_MESSAGE_TYPE_IDENTITY_SET_DEFAULT, 0},
- {&handle_create_message, NULL,
- GNUNET_MESSAGE_TYPE_IDENTITY_CREATE, 0},
- {&handle_rename_message, NULL,
- GNUNET_MESSAGE_TYPE_IDENTITY_RENAME, 0},
- {&handle_delete_message, NULL,
- GNUNET_MESSAGE_TYPE_IDENTITY_DELETE, 0},
- {NULL, NULL, 0, 0}
- };
-
cfg = c;
+ nc = GNUNET_notification_context_create (1);
if (GNUNET_OK !=
GNUNET_CONFIGURATION_get_value_filename (cfg, "identity",
- "EGODIR",
- &ego_directory))
+ "EGODIR",
+ &ego_directory))
{
GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR, "identity", "EGODIR");
GNUNET_SCHEDULER_shutdown ();
}
if (GNUNET_OK !=
GNUNET_CONFIGURATION_get_value_filename (cfg, "identity",
- "SUBSYSTEM_CFG",
- &subsystem_cfg_file))
+ "SUBSYSTEM_CFG",
+ &subsystem_cfg_file))
{
GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR, "identity", "SUBSYSTEM_CFG");
GNUNET_SCHEDULER_shutdown ();
return;
}
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Loading subsystem configuration `%s'\n",
+ subsystem_cfg_file);
subsystem_cfg = GNUNET_CONFIGURATION_create ();
if ( (GNUNET_YES ==
- GNUNET_DISK_file_test (subsystem_cfg_file)) &&
- (GNUNET_OK !=
- GNUNET_CONFIGURATION_parse (subsystem_cfg,
- subsystem_cfg_file)) )
+ GNUNET_DISK_file_test (subsystem_cfg_file)) &&
+ (GNUNET_OK !=
+ GNUNET_CONFIGURATION_parse (subsystem_cfg,
+ subsystem_cfg_file)) )
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- _("Failed to parse subsystem identity configuration file `%s'\n"),
- subsystem_cfg_file);
+ _("Failed to parse subsystem identity configuration file `%s'\n"),
+ subsystem_cfg_file);
GNUNET_SCHEDULER_shutdown ();
return;
}
stats = GNUNET_STATISTICS_create ("identity", cfg);
- GNUNET_SERVER_add_handlers (server, handlers);
- nc = GNUNET_SERVER_notification_context_create (server, 1);
- GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL, &shutdown_task,
- NULL);
+ if (GNUNET_OK !=
+ GNUNET_DISK_directory_create (ego_directory))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("Failed to create directory `%s' for storing egos\n"),
+ ego_directory);
+ }
+ GNUNET_DISK_directory_scan (ego_directory,
+ &process_ego_file,
+ NULL);
+ GNUNET_SCHEDULER_add_shutdown (&shutdown_task,
+ NULL);
}
/**
- * The main function for the network size estimation service.
- *
- * @param argc number of arguments from the command line
- * @param argv command line arguments
- * @return 0 ok, 1 on error
+ * Define "main" method using service macro.
*/
-int
-main (int argc, char *const *argv)
-{
- return (GNUNET_OK ==
- GNUNET_SERVICE_run (argc, argv, "identity",
- GNUNET_SERVICE_OPTION_NONE,
- &run, NULL)) ? 0 : 1;
-}
+GNUNET_SERVICE_MAIN
+("identity",
+ GNUNET_SERVICE_OPTION_NONE,
+ &run,
+ &client_connect_cb,
+ &client_disconnect_cb,
+ NULL,
+ GNUNET_MQ_hd_fixed_size (start_message,
+ GNUNET_MESSAGE_TYPE_IDENTITY_START,
+ struct GNUNET_MessageHeader,
+ NULL),
+ GNUNET_MQ_hd_var_size (get_default_message,
+ GNUNET_MESSAGE_TYPE_IDENTITY_GET_DEFAULT,
+ struct GetDefaultMessage,
+ NULL),
+ GNUNET_MQ_hd_var_size (set_default_message,
+ GNUNET_MESSAGE_TYPE_IDENTITY_SET_DEFAULT,
+ struct SetDefaultMessage,
+ NULL),
+ GNUNET_MQ_hd_var_size (create_message,
+ GNUNET_MESSAGE_TYPE_IDENTITY_CREATE,
+ struct CreateRequestMessage,
+ NULL),
+ GNUNET_MQ_hd_var_size (rename_message,
+ GNUNET_MESSAGE_TYPE_IDENTITY_RENAME,
+ struct RenameMessage,
+ NULL),
+ GNUNET_MQ_hd_var_size (delete_message,
+ GNUNET_MESSAGE_TYPE_IDENTITY_DELETE,
+ struct DeleteMessage,
+ NULL),
+ GNUNET_MQ_handler_end());
+
/* end of gnunet-service-identity.c */
projects / oweals / gnunet.git / blobdiff