8 #include <trp_internal.h>
10 /* Threading note: mutex lock is only used for protecting get_status() and set_status().
11 * If needed, locking for other operations (notably adding/removing connections) must be managed
12 * by whomever is holding on to the connection list. */
14 int trp_connection_lock(TRP_CONNECTION *conn)
16 return pthread_mutex_lock(&(conn->mutex));
19 int trp_connection_unlock(TRP_CONNECTION *conn)
21 return pthread_mutex_unlock(&(conn->mutex));
24 int trp_connection_get_fd(TRP_CONNECTION *conn)
29 void trp_connection_set_fd(TRP_CONNECTION *conn, int fd)
34 /* we use the gss name of the peer to identify it */
35 static TRP_RC trp_connection_set_peer(TRP_CONNECTION *conn)
37 OM_uint32 major_status=0;
38 OM_uint32 minor_status=0;
39 gss_name_t source_name=GSS_C_NO_NAME;
40 gss_name_t target_name=GSS_C_NO_NAME;
41 gss_buffer_desc peer_display_name={0,NULL};
44 tr_debug("gssctx = %p", trp_connection_get_gssctx(conn));
45 tr_debug("*gssctx = %p", *trp_connection_get_gssctx(conn));
46 major_status=gss_inquire_context(&minor_status,
47 *trp_connection_get_gssctx(conn),
56 if (major_status != GSS_S_COMPLETE) {
57 tr_err("trp_connection_set_peer: unable to identify GSS peer.");
58 if (source_name!=GSS_C_NO_NAME)
59 gss_release_name(&minor_status, &source_name);
60 if (target_name!=GSS_C_NO_NAME)
61 gss_release_name(&minor_status, &target_name);
66 /* we are the source, peer is the target */
67 major_status=gss_display_name(&minor_status, target_name, &peer_display_name, NULL);
69 /* we are the target, peer is the source */
70 major_status=gss_display_name(&minor_status, source_name, &peer_display_name, NULL);
72 gss_release_name(&minor_status, &source_name);
73 gss_release_name(&minor_status, &target_name);
75 conn->peer=tr_new_name(peer_display_name.value);
77 tr_err("trp_connection_set_peer: unable to allocate peer name.");
79 if (conn->peer->len != peer_display_name.length) {
80 tr_err("trp_connection_set_peer: error converting GSS display name to TR_NAME.");
81 tr_free_name(conn->peer);
85 gss_release_buffer(&minor_status, &peer_display_name);
93 TR_NAME *trp_connection_get_peer(TRP_CONNECTION *conn)
98 TR_NAME *trp_connection_get_gssname(TRP_CONNECTION *conn)
100 return conn->gssname;
103 void trp_connection_set_gssname(TRP_CONNECTION *conn, TR_NAME *gssname)
105 conn->gssname=gssname;
108 gss_ctx_id_t *trp_connection_get_gssctx(TRP_CONNECTION *conn)
113 void trp_connection_set_gssctx(TRP_CONNECTION *conn, gss_ctx_id_t *gssctx)
118 TRP_CONNECTION_STATUS trp_connection_get_status(TRP_CONNECTION *conn)
120 TRP_CONNECTION_STATUS status;
121 trp_connection_lock(conn);
123 trp_connection_unlock(conn);
127 static void trp_connection_set_status(TRP_CONNECTION *conn, TRP_CONNECTION_STATUS status)
129 trp_connection_lock(conn);
131 trp_connection_unlock(conn);
134 pthread_t *trp_connection_get_thread(TRP_CONNECTION *conn)
139 void trp_connection_set_thread(TRP_CONNECTION *conn, pthread_t *thread)
144 TRP_CONNECTION *trp_connection_get_next(TRP_CONNECTION *conn)
149 static void trp_connection_set_next(TRP_CONNECTION *conn, TRP_CONNECTION *next)
154 /* Ok to call more than once; guarantees connection no longer in the list. Does not free removed element.
155 * Returns handle to new list, you must replace your old handle on the list with this. */
156 TRP_CONNECTION *trp_connection_remove(TRP_CONNECTION *conn, TRP_CONNECTION *remove)
158 TRP_CONNECTION *cur=conn;
159 TRP_CONNECTION *last=NULL;
164 /* first element is a special case */
166 conn=trp_connection_get_next(cur); /* advance list head */
168 /* it was not the first element */
170 cur=trp_connection_get_next(cur);
173 trp_connection_set_next(last, trp_connection_get_next(cur));
177 cur=trp_connection_get_next(cur);
183 static TRP_CONNECTION *trp_connection_get_tail(TRP_CONNECTION *conn)
185 while((conn!=NULL)&&(trp_connection_get_next(conn)!=NULL))
186 conn=trp_connection_get_next(conn);
190 void trp_connection_append(TRP_CONNECTION *conn, TRP_CONNECTION *new)
192 trp_connection_set_next(trp_connection_get_tail(conn), new);
195 static void trp_connection_mutex_init(TRP_CONNECTION *conn)
197 pthread_mutex_init(&(conn->mutex), NULL);
200 /* talloc destructor for a connection: ensures connection is closed, memory freed */
201 static int trp_connection_destructor(void *object)
203 TRP_CONNECTION *conn=talloc_get_type_abort(object, TRP_CONNECTION); /* aborts on wrong type */
204 if ((trp_connection_get_status(conn)!=TRP_CONNECTION_DOWN)
205 && (trp_connection_get_fd(conn)!=-1))
206 close(trp_connection_get_fd(conn));
207 if (conn->peer!=NULL)
208 tr_free_name(conn->peer);
209 if (conn->gssname!=NULL)
210 tr_free_name(conn->gssname);
214 TRP_CONNECTION *trp_connection_new(TALLOC_CTX *mem_ctx)
216 TRP_CONNECTION *new_conn=talloc(mem_ctx, TRP_CONNECTION);
217 gss_ctx_id_t *gssctx=NULL;
218 pthread_t *thread=NULL;
221 if (new_conn != NULL) {
222 trp_connection_set_next(new_conn, NULL);
223 trp_connection_set_fd(new_conn, -1);
224 trp_connection_set_gssname(new_conn, NULL);
225 trp_connection_mutex_init(new_conn);
226 trp_connection_set_status(new_conn, TRP_CONNECTION_DOWN);
227 new_conn->peer=NULL; /* no true set function for this */
228 thread=talloc(new_conn, pthread_t);
229 gssctx=talloc(new_conn, gss_ctx_id_t);
231 talloc_free(new_conn);
234 trp_connection_set_gssctx(new_conn, gssctx);
236 talloc_free(new_conn);
239 trp_connection_set_thread(new_conn, thread);
240 talloc_set_destructor((void *)new_conn, trp_connection_destructor);
245 void trp_connection_free(TRP_CONNECTION *conn)
250 void trp_connection_close(TRP_CONNECTION *conn)
252 close(trp_connection_get_fd(conn));
253 trp_connection_set_fd(conn, -1);
254 trp_connection_set_status(conn, TRP_CONNECTION_DOWN);
257 /* returns 0 on authorization success, 1 on failure, or -1 in case of error */
258 int trp_connection_auth(TRP_CONNECTION *conn, TRP_AUTH_FUNC auth_callback, void *callback_data)
261 int auth, autherr = 0;
262 gss_buffer_desc nameBuffer = {0, NULL};
263 gss_ctx_id_t *gssctx=trp_connection_get_gssctx(conn);
265 /* TODO: shouldn't really peek into TR_NAME... */
266 nameBuffer.length = trp_connection_get_gssname(conn)->len;
267 nameBuffer.value = trp_connection_get_gssname(conn)->buf;
269 tr_debug("trp_connection_auth: beginning passive authentication");
270 rc = gsscon_passive_authenticate(trp_connection_get_fd(conn), nameBuffer, gssctx, auth_callback, callback_data);
271 gss_release_buffer(NULL, &nameBuffer);
273 tr_debug("trp_connection_auth: Error from gsscon_passive_authenticate(), rc = 0x%08X.", rc);
277 tr_debug("trp_connection_auth: beginning second stage authentication");
278 if (rc = gsscon_authorize(*gssctx, &auth, &autherr)) {
279 tr_debug("trp_connection_auth: Error from gsscon_authorize, rc = %d, autherr = %d.",
284 trp_connection_set_peer(conn);
285 trp_connection_set_status(conn, TRP_CONNECTION_UP);
288 tr_debug("trp_connection_auth: Connection authenticated, fd = %d.", trp_connection_get_fd(conn));
290 tr_debug("trp_connection_auth: Authentication failed, fd = %d.", trp_connection_get_fd(conn));
295 /* Accept connection */
296 TRP_CONNECTION *trp_connection_accept(TALLOC_CTX *mem_ctx, int listen, TR_NAME *gssname)
299 TRP_CONNECTION *conn=NULL;
301 conn_fd = accept(listen, NULL, NULL);
304 tr_notice("trp_connection_accept: accept() returned error.");
307 conn=trp_connection_new(mem_ctx);
308 trp_connection_set_fd(conn, conn_fd);
309 trp_connection_set_gssname(conn, gssname);
313 /* Initiate connection */
314 TRP_RC trp_connection_initiate(TRP_CONNECTION *conn, char *server, unsigned int port)
318 unsigned int use_port=0;
326 tr_err("trp_connection_initiate: null TRP_CONNECTION");
330 tr_debug("trp_connection_initiate: opening GSS connection to %s:%d",
333 err = gsscon_connect(server,
337 trp_connection_get_gssctx(conn));
339 tr_debug("trp_connection_initiate: connection failed.");
343 tr_debug("trp_connection_initiate: connected.");
344 trp_connection_set_fd(conn, fd);
345 trp_connection_set_peer(conn);
346 trp_connection_set_status(conn, TRP_CONNECTION_UP);