7 #include <trp_internal.h>
9 /* Threading note: mutex lock is only used for protecting get_status() and set_status().
10 * If needed, locking for other operations (notably adding/removing connections) must be managed
11 * by whomever is holding on to the connection list. */
13 int trp_connection_lock(TRP_CONNECTION *conn)
15 return pthread_mutex_lock(&(conn->mutex));
18 int trp_connection_unlock(TRP_CONNECTION *conn)
20 return pthread_mutex_unlock(&(conn->mutex));
23 int trp_connection_get_fd(TRP_CONNECTION *conn)
28 void trp_connection_set_fd(TRP_CONNECTION *conn, int fd)
33 TR_NAME *trp_connection_get_peer(TRP_CONNECTION *conn)
38 void trp_connection_set_peer(TRP_CONNECTION *conn, TR_NAME *peer)
43 TR_NAME *trp_connection_get_gssname(TRP_CONNECTION *conn)
48 void trp_connection_set_gssname(TRP_CONNECTION *conn, TR_NAME *gssname)
50 conn->gssname=gssname;
53 gss_ctx_id_t *trp_connection_get_gssctx(TRP_CONNECTION *conn)
58 void trp_connection_set_gssctx(TRP_CONNECTION *conn, gss_ctx_id_t *gssctx)
63 TRP_CONNECTION_STATUS trp_connection_get_status(TRP_CONNECTION *conn)
65 TRP_CONNECTION_STATUS status;
66 trp_connection_lock(conn);
68 trp_connection_unlock(conn);
72 static void trp_connection_set_status(TRP_CONNECTION *conn, TRP_CONNECTION_STATUS status)
74 trp_connection_lock(conn);
76 trp_connection_unlock(conn);
79 pthread_t *trp_connection_get_thread(TRP_CONNECTION *conn)
84 void trp_connection_set_thread(TRP_CONNECTION *conn, pthread_t *thread)
89 TRP_CONNECTION *trp_connection_get_next(TRP_CONNECTION *conn)
94 static void trp_connection_set_next(TRP_CONNECTION *conn, TRP_CONNECTION *next)
99 /* Ok to call more than once; guarantees connection no longer in the list. Does not free removed element.
100 * Returns handle to new list, you must replace your old handle on the list with this. */
101 TRP_CONNECTION *trp_connection_remove(TRP_CONNECTION *conn, TRP_CONNECTION *remove)
103 TRP_CONNECTION *cur=conn;
104 TRP_CONNECTION *last=NULL;
109 /* first element is a special case */
111 conn=trp_connection_get_next(cur); /* advance list head */
113 /* it was not the first element */
115 cur=trp_connection_get_next(cur);
118 trp_connection_set_next(last, trp_connection_get_next(cur));
122 cur=trp_connection_get_next(cur);
128 static TRP_CONNECTION *trp_connection_get_tail(TRP_CONNECTION *conn)
130 while((conn!=NULL)&&(trp_connection_get_next(conn)!=NULL))
131 conn=trp_connection_get_next(conn);
135 void trp_connection_append(TRP_CONNECTION *conn, TRP_CONNECTION *new)
137 trp_connection_set_next(trp_connection_get_tail(conn), new);
140 static void trp_connection_mutex_init(TRP_CONNECTION *conn)
142 pthread_mutex_init(&(conn->mutex), NULL);
145 /* talloc destructor for a connection: ensures connection is closed, memory freed */
146 static int trp_connection_destructor(void *object)
148 TRP_CONNECTION *conn=talloc_get_type_abort(object, TRP_CONNECTION); /* aborts on wrong type */
149 if ((trp_connection_get_status(conn)!=TRP_CONNECTION_DOWN)
150 && (trp_connection_get_fd(conn)!=-1))
151 close(trp_connection_get_fd(conn));
152 if (conn->peer!=NULL)
153 tr_free_name(conn->peer);
154 if (conn->gssname!=NULL)
155 tr_free_name(conn->gssname);
159 TRP_CONNECTION *trp_connection_new(TALLOC_CTX *mem_ctx)
161 TRP_CONNECTION *new_conn=talloc(mem_ctx, TRP_CONNECTION);
162 gss_ctx_id_t *gssctx=NULL;
163 pthread_t *thread=NULL;
166 if (new_conn != NULL) {
167 trp_connection_set_next(new_conn, NULL);
168 trp_connection_set_fd(new_conn, -1);
169 trp_connection_set_peer(new_conn, NULL);
170 trp_connection_set_gssname(new_conn, NULL);
171 trp_connection_mutex_init(new_conn);
172 trp_connection_set_status(new_conn, TRP_CONNECTION_DOWN);
173 thread=talloc(new_conn, pthread_t);
174 gssctx=talloc(new_conn, gss_ctx_id_t);
176 talloc_free(new_conn);
179 trp_connection_set_gssctx(new_conn, gssctx);
181 talloc_free(new_conn);
184 trp_connection_set_thread(new_conn, thread);
185 talloc_set_destructor((void *)new_conn, trp_connection_destructor);
190 void trp_connection_free(TRP_CONNECTION *conn)
195 void trp_connection_close(TRP_CONNECTION *conn)
197 close(trp_connection_get_fd(conn));
198 trp_connection_set_fd(conn, -1);
199 trp_connection_set_status(conn, TRP_CONNECTION_DOWN);
202 /* returns 0 on authorization success, 1 on failure, or -1 in case of error */
203 int trp_connection_auth(TRP_CONNECTION *conn, TRP_AUTH_FUNC auth_callback, void *callback_data)
206 int auth, autherr = 0;
207 gss_buffer_desc nameBuffer = {0, NULL};
208 gss_ctx_id_t *gssctx=trp_connection_get_gssctx(conn);
210 /* TODO: shouldn't really peek into TR_NAME... */
211 nameBuffer.length = trp_connection_get_gssname(conn)->len;
212 nameBuffer.value = trp_connection_get_gssname(conn)->buf;
214 tr_debug("trp_connection_auth: beginning passive authentication");
215 rc = gsscon_passive_authenticate(trp_connection_get_fd(conn), nameBuffer, gssctx, auth_callback, callback_data);
216 gss_release_buffer(NULL, &nameBuffer);
218 tr_debug("trp_connection_auth: Error from gsscon_passive_authenticate(), rc = 0x%08X.", rc);
222 tr_debug("trp_connection_auth: beginning second stage authentication");
223 if (rc = gsscon_authorize(*gssctx, &auth, &autherr)) {
224 tr_debug("trp_connection_auth: Error from gsscon_authorize, rc = %d, autherr = %d.",
230 tr_debug("trp_connection_auth: Connection authenticated, fd = %d.", trp_connection_get_fd(conn));
232 tr_debug("trp_connection_auth: Authentication failed, fd = %d.", trp_connection_get_fd(conn));
237 /* Accept connection */
238 TRP_CONNECTION *trp_connection_accept(TALLOC_CTX *mem_ctx, int listen, TR_NAME *gssname)
241 TRP_CONNECTION *conn=NULL;
243 conn_fd = accept(listen, NULL, NULL);
246 tr_notice("trp_connection_accept: accept() returned error.");
249 conn=trp_connection_new(mem_ctx);
250 trp_connection_set_fd(conn, conn_fd);
251 trp_connection_set_gssname(conn, gssname);
252 trp_connection_set_status(conn, TRP_CONNECTION_UP);
256 /* Initiate connection */
257 TRP_RC trp_connection_initiate(TRP_CONNECTION *conn, const char *server, unsigned int port)
261 unsigned int use_port=0;
269 tr_err("trp_connection_initiate: null TRP_CONNECTION");
273 tr_debug("trp_connection_initiate: opening GSS connection to %s:%d",
276 err = gsscon_connect(server,
280 trp_connection_get_gssctx(conn));
281 tr_debug("trp_connection_initiate: connected");
287 trp_connection_set_fd(conn, fd);
288 trp_connection_set_peer(conn, tr_new_name(server));
289 trp_connection_set_status(conn, TRP_CONNECTION_UP);