* The purpose of this service is to manage private keys that
* represent the various egos/pseudonyms/identities of a GNUnet user.
*
- * TODO:
- * - disk operations
- * - default identity set/get handlers
+ * 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.
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.
*
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);
}
}
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);
- memcpy (&rcm[1], emsg, elen);
- GNUNET_SERVER_notification_context_unicast (nc, client, &rcm->header, GNUNET_YES);
+ 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_update_message (struct Ego *ego)
{
struct GNUNET_IDENTITY_UpdateMessage *um;
- char *str;
- uint16_t pk_len;
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 = 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) + pk_len + name_len);
+ um->header.size = htons (sizeof (struct GNUNET_IDENTITY_UpdateMessage) + name_len);
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);
+ um->end_of_list = htons (GNUNET_NO);
+ um->private_key = *ego->pk;
+ memcpy (&um[1], ego->identifier, name_len);
return um;
}
const char *servicename)
{
struct GNUNET_IDENTITY_SetDefaultMessage *sdm;
- char *str;
- uint16_t pk_len;
size_t name_len;
- struct GNUNET_CRYPTO_EccPrivateKeyBinaryEncoded *enc;
name_len = (NULL == servicename) ? 0 : (strlen (servicename) + 1);
- enc = GNUNET_CRYPTO_ecc_encode_key (ego->pk);
- pk_len = ntohs (enc->size);
- sdm = GNUNET_malloc (sizeof (struct GNUNET_IDENTITY_SetDefaultMessage) + pk_len + name_len);
+ 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) + pk_len + name_len);
+ sdm->header.size = htons (sizeof (struct GNUNET_IDENTITY_SetDefaultMessage) + name_len);
sdm->name_len = htons (name_len);
- sdm->pk_len = htons (pk_len);
- str = (char *) &sdm[1];
- memcpy (str, enc, pk_len);
- memcpy (&str[pk_len], servicename, name_len);
- GNUNET_free (enc);
+ 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
+ * about all identities to the client immediately and
* adds the client to the notification context for future
* updates.
*
const struct GNUNET_MessageHeader *message)
{
struct GNUNET_IDENTITY_UpdateMessage *um;
+ struct GNUNET_IDENTITY_UpdateMessage ume;
struct Ego *ego;
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ 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_YES);
+ 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);
}
const char *name;
char *identifier;
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Received GET_DEFAULT message from client\n");
size = ntohs (message->size);
if (size <= sizeof (struct GNUNET_IDENTITY_GetDefaultMessage))
{
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))
{
- /* FIXME: not sure client API handles this case correctly right now... */
send_result_code (client, 1, gettext_noop ("no default known"));
- GNUNET_SERVER_receive_done (client, GNUNET_OK);
+ GNUNET_SERVER_receive_done (client, GNUNET_OK);
return;
}
for (ego = ego_head; NULL != ego; ego = ego->next)
{
sdm = create_set_default_message (ego,
name);
- GNUNET_SERVER_notification_context_broadcast (nc, &sdm->header, GNUNET_YES);
+ 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;
}
}
- /* FIXME: not sure client API handles this case correctly right now... */
- send_result_code (client, 1,
+ 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.
handle_set_default_message (void *cls, struct GNUNET_SERVER_Client *client,
const struct GNUNET_MessageHeader *message)
{
- 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);
+ 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);
}
struct GNUNET_IDENTITY_UpdateMessage *um;
um = create_update_message (ego);
- GNUNET_SERVER_notification_context_broadcast (nc, &um->header, GNUNET_YES);
+ GNUNET_SERVER_notification_context_broadcast (nc, &um->header, GNUNET_NO);
GNUNET_free (um);
}
const struct GNUNET_IDENTITY_CreateRequestMessage *crm;
uint16_t size;
uint16_t name_len;
- uint16_t pk_len;
struct Ego *ego;
const char *str;
- struct GNUNET_CRYPTO_EccPrivateKey *pk;
+ char *fn;
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Received CREATE message from client\n");
size = ntohs (message->size);
if (size <= sizeof (struct GNUNET_IDENTITY_CreateRequestMessage))
}
crm = (const struct GNUNET_IDENTITY_CreateRequestMessage *) message;
name_len = ntohs (crm->name_len);
- pk_len = ntohs (crm->pk_len);
- str = (const char *) &crm[1];
- if ( (name_len + pk_len + sizeof (struct GNUNET_IDENTITY_CreateRequestMessage) != size) ||
- (NULL == (pk = GNUNET_CRYPTO_ecc_decode_key (str, pk_len, GNUNET_YES))) )
+ 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 = &str[pk_len];
+ str = (const char *) &crm[1];
if ('\0' != str[name_len - 1])
{
GNUNET_break (0);
{
send_result_code (client, 1, gettext_noop ("identifier already in use for another ego"));
GNUNET_SERVER_receive_done (client, GNUNET_OK);
- GNUNET_CRYPTO_ecc_key_free (pk);
return;
}
}
ego = GNUNET_new (struct Ego);
- ego->pk = pk;
+ 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);
- /* FIXME: also write to file! */
- notify_listeners (ego);
+ 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
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,
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Received RENAME message from client\n");
size = ntohs (message->size);
if (size <= sizeof (struct GNUNET_IDENTITY_RenameMessage))
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);
- /* FIXME: also rename file! */
+ 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);
}
}
+ /* 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.
uint16_t name_len;
struct Ego *ego;
const char *name;
+ char *fn;
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Received DELETE message from client\n");
size = ntohs (message->size);
if (size <= sizeof (struct GNUNET_IDENTITY_DeleteMessage))
GNUNET_CONTAINER_DLL_remove (ego_head,
ego_tail,
ego);
- /* FIXME: also delete file! */
+ 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_CRYPTO_ecc_key_free (ego->pk);
+ GNUNET_free (ego->pk);
GNUNET_free (ego);
send_result_code (client, 0, NULL);
GNUNET_SERVER_receive_done (client, GNUNET_OK);
*
* @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!
+ * @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)
{
- GNUNET_break (0); // not implemented
+ 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,
+run (void *cls,
struct GNUNET_SERVER_Handle *server,
const struct GNUNET_CONFIGURATION_Handle *c)
{
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_OK !=
GNUNET_CONFIGURATION_parse (subsystem_cfg,
subsystem_cfg_file)) )
{
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);
main (int argc, char *const *argv)
{
return (GNUNET_OK ==
- GNUNET_SERVICE_run (argc, argv, "identity",
+ GNUNET_SERVICE_run (argc, argv, "identity",
GNUNET_SERVICE_OPTION_NONE,
&run, NULL)) ? 0 : 1;
}
projects / oweals / gnunet.git / blobdiff