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13 General Public License for more details.
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22 * @file peerstore/gnunet-service-peerstore.c
23 * @brief peerstore service implementation
24 * @author Omar Tarabai
27 #include "gnunet_util_lib.h"
28 #include "peerstore.h"
33 static const struct GNUNET_CONFIGURATION_Handle *cfg;
36 * Database plugin library name
43 static struct GNUNET_PEERSTORE_PluginFunctions *db;
46 * Task run during shutdown.
52 shutdown_task (void *cls,
53 const struct GNUNET_SCHEDULER_TaskContext *tc)
55 if(NULL != db_lib_name)
57 GNUNET_break (NULL == GNUNET_PLUGIN_unload (db_lib_name, db));
58 GNUNET_free (db_lib_name);
65 * A client disconnected. Remove all of its data structure entries.
67 * @param cls closure, NULL
68 * @param client identification of the client
71 handle_client_disconnect (void *cls,
72 struct GNUNET_SERVER_Client
78 * Handle a store request from client
81 * @param client identification of the client
82 * @param message the actual message
84 void handle_store (void *cls,
85 struct GNUNET_SERVER_Client *client,
86 const struct GNUNET_MessageHeader *message)
88 struct StoreRequestMessage *sreqm;
89 struct GNUNET_SERVER_TransmitContext *tc;
90 struct StoreResponseMessage *sresm;
94 msg_size = ntohs(message->size);
95 GNUNET_break_op(msg_size > sizeof(struct GNUNET_MessageHeader) + sizeof(struct StoreRequestMessage));
96 sreqm = (struct StoreRequestMessage *)&message[1];
97 sub_system = (char *)&sreqm[1];
98 GNUNET_log(GNUNET_ERROR_TYPE_INFO, "Received a store request (size: %lu) for sub system `%s' and peer `%s'\n",
101 GNUNET_i2s (&sreqm->peer));
102 //TODO: do the actual storage
103 //create a fake response for testing
104 char *response = "This is a response";
105 uint16_t resp_size = strlen(response);
106 tc = GNUNET_SERVER_transmit_context_create (client);
107 msg_size = sizeof(struct StoreResponseMessage) + resp_size;
108 sresm = malloc(msg_size);
109 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Sending a response to client of size: %u, response size: %u\n", msg_size, resp_size);
110 sresm->header.type = htons(GNUNET_MESSAGE_TYPE_PEERSTORE_STORE_RESULT);
111 sresm->header.size = htons(msg_size);
112 sresm->success = htons(GNUNET_NO);
113 sresm->emsg_size = htons(resp_size);
114 char *msg_ptr = (char *)&sresm[1];
115 memcpy(msg_ptr, response, resp_size);
116 GNUNET_SERVER_transmit_context_append_message(tc, (struct GNUNET_MessageHeader *)sresm);
117 GNUNET_SERVER_transmit_context_run (tc, GNUNET_TIME_UNIT_FOREVER_REL);
121 * Peerstore service runner.
124 * @param server the initialized server
125 * @param c configuration to use
129 struct GNUNET_SERVER_Handle *server,
130 const struct GNUNET_CONFIGURATION_Handle *c)
132 static const struct GNUNET_SERVER_MessageHandler handlers[] = {
133 {&handle_store, NULL, GNUNET_MESSAGE_TYPE_PEERSTORE_STORE, 0},
140 GNUNET_CONFIGURATION_get_value_string (cfg, "peerstore", "DATABASE",
142 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "No database backend configured\n");
146 GNUNET_asprintf (&db_lib_name, "libgnunet_plugin_peerstore_%s", database);
147 db = GNUNET_PLUGIN_load(db_lib_name, (void *) cfg);
148 GNUNET_free(database);
151 GNUNET_log(GNUNET_ERROR_TYPE_ERROR, "Could not load database backend `%s'\n", db_lib_name);
154 GNUNET_SERVER_add_handlers (server, handlers);
155 GNUNET_SERVER_disconnect_notify (server,
156 &handle_client_disconnect,
159 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL,
166 * The main function for the peerstore service.
168 * @param argc number of arguments from the command line
169 * @param argv command line arguments
170 * @return 0 ok, 1 on error
173 main (int argc, char *const *argv)
176 GNUNET_SERVICE_run (argc,
179 GNUNET_SERVICE_OPTION_NONE,
180 &run, NULL)) ? 0 : 1;
183 /* end of gnunet-service-peerstore.c */