/**
* @file identity/gnunet-service-identity.c
- * @brief identity (management_ service
+ * @brief identity management service
* @author Christian Grothoff
*
* 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"
#include "gnunet_identity_service.h"
#include "identity.h"
+
+/**
+ * Information we keep about each ego.
+ */
+struct Ego
+{
+
+ /**
+ * 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_EcdsaPrivateKey *pk;
+
+ /**
+ * String identifier for the ego.
+ */
+ char *identifier;
+
+};
+
+
/**
* Handle to our current configuration.
*/
static const struct GNUNET_CONFIGURATION_Handle *cfg;
+/**
+ * Handle to subsystem configuration which for each subsystem contains
+ * the name of the default ego.
+ */
+static struct GNUNET_CONFIGURATION_Handle *subsystem_cfg;
+
/**
* Handle to the statistics service.
*/
static struct GNUNET_STATISTICS_Handle *stats;
+/**
+ * Notification context, simplifies client broadcasts.
+ */
+static struct GNUNET_SERVER_NotificationContext *nc;
+
+/**
+ * Directory where we store the identities.
+ */
+static char *ego_directory;
+
+/**
+ * Configuration file name where subsystem information is kept.
+ */
+static char *subsystem_cfg_file;
+
+/**
+ * Head of DLL of all egos.
+ */
+static struct Ego *ego_head;
+
+/**
+ * Tail of DLL of all egos.
+ */
+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;
+}
+
+
+/**
+ * Task run during shutdown.
+ *
+ * @param cls unused
+ * @param tc unused
+ */
+static void
+shutdown_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+ struct Ego *e;
+
+ if (NULL != nc)
+ {
+ GNUNET_SERVER_notification_context_destroy (nc);
+ nc = NULL;
+ }
+ if (NULL != stats)
+ {
+ GNUNET_STATISTICS_destroy (stats, GNUNET_NO);
+ stats = NULL;
+ }
+ GNUNET_CONFIGURATION_destroy (subsystem_cfg);
+ subsystem_cfg = NULL;
+ GNUNET_free (subsystem_cfg_file);
+ subsystem_cfg_file = NULL;
+ GNUNET_free (ego_directory);
+ ego_directory = NULL;
+ while (NULL != (e = ego_head))
+ {
+ GNUNET_CONTAINER_DLL_remove (ego_head, ego_tail, e);
+ GNUNET_free (e->pk);
+ GNUNET_free (e->identifier);
+ GNUNET_free (e);
+ }
+}
+
+
+/**
+ * Send a result code back to the client.
+ *
+ * @param client client that should receive the result code
+ * @param result_code code to transmit
+ * @param emsg error message to include (or NULL for none)
+ */
+static void
+send_result_code (struct GNUNET_SERVER_Client *client,
+ uint32_t result_code,
+ const char *emsg)
+{
+ struct GNUNET_IDENTITY_ResultCodeMessage *rcm;
+ 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);
+ rcm->result_code = htonl (result_code);
+ if (0 < elen)
+ memcpy (&rcm[1], emsg, elen);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Sending result %d (%s) to client\n",
+ (int) result_code,
+ emsg);
+ GNUNET_SERVER_notification_context_unicast (nc, client, &rcm->header, GNUNET_NO);
+ GNUNET_free (rcm);
+}
+
+
+/**
+ * Create an update message with information about the current state of an ego.
+ *
+ * @param ego ego to create message for
+ * @return corresponding update message
+ */
+static struct GNUNET_IDENTITY_UpdateMessage *
+create_update_message (struct Ego *ego)
+{
+ struct GNUNET_IDENTITY_UpdateMessage *um;
+ size_t name_len;
+
+ name_len = (NULL == ego->identifier) ? 0 : (strlen (ego->identifier) + 1);
+ um = GNUNET_malloc (sizeof (struct GNUNET_IDENTITY_UpdateMessage) + name_len);
+ um->header.type = htons (GNUNET_MESSAGE_TYPE_IDENTITY_UPDATE);
+ um->header.size = htons (sizeof (struct GNUNET_IDENTITY_UpdateMessage) + name_len);
+ um->name_len = htons (name_len);
+ um->end_of_list = htons (GNUNET_NO);
+ um->private_key = *ego->pk;
+ memcpy (&um[1], ego->identifier, name_len);
+ return um;
+}
+
+
+/**
+ * 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_IDENTITY_SetDefaultMessage *
+create_set_default_message (struct Ego *ego,
+ const char *servicename)
+{
+ struct GNUNET_IDENTITY_SetDefaultMessage *sdm;
+ size_t name_len;
+
+ name_len = (NULL == servicename) ? 0 : (strlen (servicename) + 1);
+ sdm = GNUNET_malloc (sizeof (struct GNUNET_IDENTITY_SetDefaultMessage) + name_len);
+ sdm->header.type = htons (GNUNET_MESSAGE_TYPE_IDENTITY_SET_DEFAULT);
+ sdm->header.size = htons (sizeof (struct GNUNET_IDENTITY_SetDefaultMessage) + name_len);
+ sdm->name_len = htons (name_len);
+ sdm->reserved = htons (0);
+ sdm->private_key = *ego->pk;
+ memcpy (&sdm[1], servicename, name_len);
+ return sdm;
+}
+
+
+/**
+ * Handler for START message from client, sends information
+ * about all identities to the client immediately and
+ * adds the client to the notification context for future
+ * updates.
+ *
+ * @param cls unused
+ * @param client who sent the message
+ * @param message the message received
+ */
+static void
+handle_start_message (void *cls, struct GNUNET_SERVER_Client *client,
+ const struct GNUNET_MessageHeader *message)
+{
+ struct GNUNET_IDENTITY_UpdateMessage *um;
+ struct GNUNET_IDENTITY_UpdateMessage ume;
+ struct Ego *ego;
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Received START message from client\n");
+ GNUNET_SERVER_notification_context_add (nc, 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_NO);
+ GNUNET_free (um);
+ }
+ memset (&ume, 0, sizeof (ume));
+ ume.header.type = htons (GNUNET_MESSAGE_TYPE_IDENTITY_UPDATE);
+ ume.header.size = htons (sizeof (struct GNUNET_IDENTITY_UpdateMessage));
+ ume.end_of_list = htons (GNUNET_YES);
+ ume.name_len = htons (0);
+ GNUNET_SERVER_notification_context_unicast (nc, client, &ume.header, GNUNET_NO);
+ GNUNET_SERVER_receive_done (client, GNUNET_OK);
+}
+
+
+/**
+ * Handler for GET_DEFAULT message from client, returns
+ * default identity for some service.
+ *
+ * @param cls unused
+ * @param client who sent the message
+ * @param message the message received
+ */
+static void
+handle_get_default_message (void *cls, struct GNUNET_SERVER_Client *client,
+ const struct GNUNET_MessageHeader *message)
+{
+ const struct GNUNET_IDENTITY_GetDefaultMessage *gdm;
+ struct GNUNET_IDENTITY_SetDefaultMessage *sdm;
+ uint16_t size;
+ uint16_t name_len;
+ struct Ego *ego;
+ const char *name;
+ char *identifier;
+
+ size = ntohs (message->size);
+ if (size <= sizeof (struct GNUNET_IDENTITY_GetDefaultMessage))
+ {
+ GNUNET_break (0);
+ GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
+ return;
+ }
+ gdm = (const struct GNUNET_IDENTITY_GetDefaultMessage *) message;
+ name = (const char *) &gdm[1];
+ name_len = ntohs (gdm->name_len);
+ if ( (name_len + sizeof (struct GNUNET_IDENTITY_GetDefaultMessage) != size) ||
+ (0 != ntohs (gdm->reserved)) ||
+ ('\0' != name[name_len - 1]) )
+ {
+ GNUNET_break (0);
+ GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
+ return;
+ }
+ 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_SERVER_receive_done (client, GNUNET_OK);
+ return;
+ }
+ for (ego = ego_head; NULL != ego; ego = ego->next)
+ {
+ if (0 == strcmp (ego->identifier,
+ identifier))
+ {
+ sdm = create_set_default_message (ego,
+ name);
+ GNUNET_SERVER_notification_context_unicast (nc, client,
+ &sdm->header, GNUNET_NO);
+ GNUNET_free (sdm);
+ GNUNET_SERVER_receive_done (client, GNUNET_OK);
+ 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_SERVER_receive_done (client, GNUNET_OK);
+}
+
+
+/**
+ * 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));
+}
+
+
+/**
+ * Handler for SET_DEFAULT message from client, updates
+ * default identity for some service.
+ *
+ * @param cls unused
+ * @param client who sent the message
+ * @param message the message received
+ */
+static void
+handle_set_default_message (void *cls, struct GNUNET_SERVER_Client *client,
+ const struct GNUNET_MessageHeader *message)
+{
+ const struct GNUNET_IDENTITY_SetDefaultMessage *sdm;
+ uint16_t size;
+ uint16_t name_len;
+ struct Ego *ego;
+ const char *str;
+
+ size = ntohs (message->size);
+ if (size <= sizeof (struct GNUNET_IDENTITY_SetDefaultMessage))
+ {
+ GNUNET_break (0);
+ GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
+ return;
+ }
+ sdm = (const struct GNUNET_IDENTITY_SetDefaultMessage *) message;
+ name_len = ntohs (sdm->name_len);
+ GNUNET_break (0 == ntohs (sdm->reserved));
+ if (name_len + sizeof (struct GNUNET_IDENTITY_SetDefaultMessage) != size)
+ {
+ GNUNET_break (0);
+ GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
+ return;
+ }
+ str = (const char *) &sdm[1];
+ if ('\0' != str[name_len - 1])
+ {
+ GNUNET_break (0);
+ GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
+ return;
+ }
+ 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_SERVER_receive_done (client, GNUNET_OK);
+ return;
+ }
+ }
+ send_result_code (client, 1, _("Unknown ego specified for service (internal error)"));
+ GNUNET_SERVER_receive_done (client, GNUNET_OK);
+}
+
+
+/**
+ * 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 GNUNET_IDENTITY_UpdateMessage *um;
+
+ um = create_update_message (ego);
+ GNUNET_SERVER_notification_context_broadcast (nc, &um->header, GNUNET_NO);
+ GNUNET_free (um);
+}
+
+
+/**
+ * Handler for CREATE message from client, creates
+ * new identity.
+ *
+ * @param cls unused
+ * @param client who sent the message
+ * @param message the message received
+ */
+static void
+handle_create_message (void *cls, struct GNUNET_SERVER_Client *client,
+ const struct GNUNET_MessageHeader *message)
+{
+ const struct GNUNET_IDENTITY_CreateRequestMessage *crm;
+ uint16_t size;
+ uint16_t name_len;
+ struct Ego *ego;
+ const char *str;
+ char *fn;
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Received CREATE message from client\n");
+ size = ntohs (message->size);
+ if (size <= sizeof (struct GNUNET_IDENTITY_CreateRequestMessage))
+ {
+ GNUNET_break (0);
+ GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
+ return;
+ }
+ crm = (const struct GNUNET_IDENTITY_CreateRequestMessage *) message;
+ name_len = ntohs (crm->name_len);
+ GNUNET_break (0 == ntohs (crm->reserved));
+ if (name_len + sizeof (struct GNUNET_IDENTITY_CreateRequestMessage) != size)
+ {
+ GNUNET_break (0);
+ GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
+ return;
+ }
+ str = (const char *) &crm[1];
+ if ('\0' != str[name_len - 1])
+ {
+ GNUNET_break (0);
+ GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
+ return;
+ }
+ 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_SERVER_receive_done (client, GNUNET_OK);
+ 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_SERVER_receive_done (client, GNUNET_OK);
+}
+
+
+/**
+ * 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)
+{
+ 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);
+}
+
+
+/**
+ * Handler for RENAME message from client, creates
+ * new identity.
+ *
+ * @param cls unused
+ * @param client who sent the message
+ * @param message the message received
+ */
+static void
+handle_rename_message (void *cls, struct GNUNET_SERVER_Client *client,
+ const struct GNUNET_MessageHeader *message)
+{
+ const struct GNUNET_IDENTITY_RenameMessage *rm;
+ uint16_t size;
+ uint16_t old_name_len;
+ uint16_t new_name_len;
+ struct Ego *ego;
+ const char *old_name;
+ const char *new_name;
+ struct RenameContext rename_ctx;
+ char *fn_old;
+ char *fn_new;
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Received RENAME message from client\n");
+ size = ntohs (message->size);
+ if (size <= sizeof (struct GNUNET_IDENTITY_RenameMessage))
+ {
+ GNUNET_break (0);
+ GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
+ return;
+ }
+ rm = (const struct GNUNET_IDENTITY_RenameMessage *) message;
+ old_name_len = ntohs (rm->old_name_len);
+ new_name_len = ntohs (rm->new_name_len);
+ old_name = (const char *) &rm[1];
+ new_name = &old_name[old_name_len];
+ if ( (old_name_len + new_name_len + sizeof (struct GNUNET_IDENTITY_RenameMessage) != size) ||
+ ('\0' != old_name[old_name_len - 1]) ||
+ ('\0' != new_name[new_name_len - 1]) )
+ {
+ GNUNET_break (0);
+ GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
+ return;
+ }
+
+ /* 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_SERVER_receive_done (client, GNUNET_OK);
+ 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_SERVER_receive_done (client, GNUNET_OK);
+ return;
+ }
+ }
+
+ /* failed to locate old name */
+ send_result_code (client, 1, gettext_noop ("no matching ego found"));
+ GNUNET_SERVER_receive_done (client, GNUNET_OK);
+}
+
+
+/**
+ * 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);
+}
+
+
+/**
+ * Handler for DELETE message from client, creates
+ * new identity.
+ *
+ * @param cls unused
+ * @param client who sent the message
+ * @param message the message received
+ */
+static void
+handle_delete_message (void *cls, struct GNUNET_SERVER_Client *client,
+ const struct GNUNET_MessageHeader *message)
+{
+ const struct GNUNET_IDENTITY_DeleteMessage *dm;
+ uint16_t size;
+ uint16_t name_len;
+ struct Ego *ego;
+ const char *name;
+ char *fn;
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Received DELETE message from client\n");
+ size = ntohs (message->size);
+ if (size <= sizeof (struct GNUNET_IDENTITY_DeleteMessage))
+ {
+ GNUNET_break (0);
+ GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
+ return;
+ }
+ dm = (const struct GNUNET_IDENTITY_DeleteMessage *) message;
+ name = (const char *) &dm[1];
+ name_len = ntohs (dm->name_len);
+ if ( (name_len + sizeof (struct GNUNET_IDENTITY_DeleteMessage) != size) ||
+ (0 != ntohs (dm->reserved)) ||
+ ('\0' != name[name_len - 1]) )
+ {
+ GNUNET_break (0);
+ GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
+ return;
+ }
+ 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_SERVER_receive_done (client, GNUNET_OK);
+ return;
+ }
+ }
+
+ send_result_code (client, 1, gettext_noop ("no matching ego found"));
+ GNUNET_SERVER_receive_done (client, GNUNET_OK);
+}
+
+
+/**
+ * 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;
+}
+
/**
* Handle network size estimate clients.
* @param c configuration to use
*/
static void
-run (void *cls,
+run (void *cls,
struct GNUNET_SERVER_Handle *server,
const struct GNUNET_CONFIGURATION_Handle *c)
{
static const struct GNUNET_SERVER_MessageHandler handlers[] = {
- // {&handle_start_message, NULL, GNUNET_MESSAGE_TYPE_IDENTITY_START, sizeof (struct GNUNET_MessageHeader)},
+ {&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;
+ if (GNUNET_OK !=
+ GNUNET_CONFIGURATION_get_value_filename (cfg, "identity",
+ "EGODIR",
+ &ego_directory))
+ {
+ GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR, "identity", "EGODIR");
+ GNUNET_SCHEDULER_shutdown ();
+ return;
+ }
+ if (GNUNET_OK !=
+ GNUNET_CONFIGURATION_get_value_filename (cfg, "identity",
+ "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_log (GNUNET_ERROR_TYPE_ERROR,
+ _("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);
+ 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_delayed (GNUNET_TIME_UNIT_FOREVER_REL, &shutdown_task,
+ NULL);
}
main (int argc, char *const *argv)
{
return (GNUNET_OK ==
- GNUNET_SERVICE_run (argc, argv, "identity", GNUNET_SERVICE_OPTION_NONE,
+ GNUNET_SERVICE_run (argc, argv, "identity",
+ GNUNET_SERVICE_OPTION_NONE,
&run, NULL)) ? 0 : 1;
}
projects / oweals / gnunet.git / blobdiff