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_gssname(TRP_CONNECTION *conn)
38 void trp_connection_set_gssname(TRP_CONNECTION *conn, TR_NAME *gssname)
40 conn->gssname=gssname;
43 gss_ctx_id_t *trp_connection_get_gssctx(TRP_CONNECTION *conn)
48 void trp_connection_set_gssctx(TRP_CONNECTION *conn, gss_ctx_id_t *gssctx)
53 TRP_CONNECTION_STATUS trp_connection_get_status(TRP_CONNECTION *conn)
55 TRP_CONNECTION_STATUS status;
56 trp_connection_lock(conn);
58 trp_connection_unlock(conn);
62 static void trp_connection_set_status(TRP_CONNECTION *conn, TRP_CONNECTION_STATUS status)
64 trp_connection_lock(conn);
66 trp_connection_unlock(conn);
69 pthread_t *trp_connection_get_thread(TRP_CONNECTION *conn)
74 void trp_connection_set_thread(TRP_CONNECTION *conn, pthread_t *thread)
79 TRP_CONNECTION *trp_connection_get_next(TRP_CONNECTION *conn)
84 static void trp_connection_set_next(TRP_CONNECTION *conn, TRP_CONNECTION *next)
89 /* Ok to call more than once; guarantees connection no longer in the list. Does not free removed element.
90 * Returns handle to new list, you must replace your old handle on the list with this. */
91 TRP_CONNECTION *trp_connection_remove(TRP_CONNECTION *conn, TRP_CONNECTION *remove)
93 TRP_CONNECTION *cur=conn;
94 TRP_CONNECTION *last=NULL;
99 /* first element is a special case */
101 conn=trp_connection_get_next(cur); /* advance list head */
103 /* it was not the first element */
105 cur=trp_connection_get_next(cur);
108 trp_connection_set_next(last, trp_connection_get_next(cur));
112 cur=trp_connection_get_next(cur);
118 static TRP_CONNECTION *trp_connection_get_tail(TRP_CONNECTION *conn)
120 while((conn!=NULL)&&(trp_connection_get_next(conn)!=NULL))
121 conn=trp_connection_get_next(conn);
125 void trp_connection_append(TRP_CONNECTION *conn, TRP_CONNECTION *new)
127 trp_connection_set_next(trp_connection_get_tail(conn), new);
130 static void trp_connection_mutex_init(TRP_CONNECTION *conn)
132 pthread_mutex_init(&(conn->mutex), NULL);
135 /* talloc destructor for a connection: ensures connection is closed, memory freed */
136 static int trp_connection_destructor(void *object)
138 TRP_CONNECTION *conn=talloc_get_type_abort(object, TRP_CONNECTION); /* aborts on wrong type */
139 if ((trp_connection_get_status(conn)!=TRP_CONNECTION_DOWN)
140 && (trp_connection_get_fd(conn)!=-1))
141 close(trp_connection_get_fd(conn));
142 if (conn->gssname!=NULL)
143 tr_free_name(conn->gssname);
147 TRP_CONNECTION *trp_connection_new(TALLOC_CTX *mem_ctx)
149 TRP_CONNECTION *new_conn=talloc(mem_ctx, TRP_CONNECTION);
150 gss_ctx_id_t *gssctx=NULL;
151 pthread_t *thread=NULL;
154 if (new_conn != NULL) {
155 trp_connection_set_next(new_conn, NULL);
156 trp_connection_set_fd(new_conn, -1);
157 trp_connection_set_gssname(new_conn, NULL);
158 trp_connection_mutex_init(new_conn);
159 trp_connection_set_status(new_conn, TRP_CONNECTION_DOWN);
160 thread=talloc(new_conn, pthread_t);
161 gssctx=talloc(new_conn, gss_ctx_id_t);
163 talloc_free(new_conn);
166 trp_connection_set_gssctx(new_conn, gssctx);
168 talloc_free(new_conn);
171 trp_connection_set_thread(new_conn, thread);
172 talloc_set_destructor((void *)new_conn, trp_connection_destructor);
177 void trp_connection_free(TRP_CONNECTION *conn)
182 void trp_connection_close(TRP_CONNECTION *conn)
184 close(trp_connection_get_fd(conn));
185 trp_connection_set_fd(conn, -1);
186 trp_connection_set_status(conn, TRP_CONNECTION_DOWN);
189 /* returns 0 on authorization success, 1 on failure, or -1 in case of error */
190 int trp_connection_auth(TRP_CONNECTION *conn, TRP_AUTH_FUNC auth_callback, void *callback_data)
193 int auth, autherr = 0;
194 gss_buffer_desc nameBuffer = {0, NULL};
195 gss_ctx_id_t *gssctx=trp_connection_get_gssctx(conn);
197 /* TODO: shouldn't really peek into TR_NAME... */
198 nameBuffer.length = trp_connection_get_gssname(conn)->len;
199 nameBuffer.value = trp_connection_get_gssname(conn)->buf;
201 tr_debug("trp_connection_auth: beginning passive authentication");
202 rc = gsscon_passive_authenticate(trp_connection_get_fd(conn), nameBuffer, gssctx, auth_callback, callback_data);
203 gss_release_buffer(NULL, &nameBuffer);
205 tr_debug("trp_connection_auth: Error from gsscon_passive_authenticate(), rc = 0x%08X.", rc);
209 tr_debug("trp_connection_auth: beginning second stage authentication");
210 if (rc = gsscon_authorize(*gssctx, &auth, &autherr)) {
211 tr_debug("trp_connection_auth: Error from gsscon_authorize, rc = %d, autherr = %d.",
217 tr_debug("trp_connection_auth: Connection authenticated, fd = %d.", trp_connection_get_fd(conn));
219 tr_debug("trp_connection_auth: Authentication failed, fd = %d.", trp_connection_get_fd(conn));
224 /* Accept connection */
225 TRP_CONNECTION *trp_connection_accept(TALLOC_CTX *mem_ctx, int listen, TR_NAME *gssname)
228 TRP_CONNECTION *conn=NULL;
230 conn_fd = accept(listen, NULL, NULL);
233 tr_notice("trp_connection_accept: accept() returned error.");
236 conn=trp_connection_new(mem_ctx);
237 trp_connection_set_fd(conn, conn_fd);
238 trp_connection_set_gssname(conn, gssname);
239 trp_connection_set_status(conn, TRP_CONNECTION_UP);
243 /* Initiate connection */
244 TRP_RC trp_connection_initiate(TRP_CONNECTION *conn, const char *server, unsigned int port)
248 unsigned int use_port=0;
256 tr_err("trp_connection_initiate: null TRP_CONNECTION");
260 tr_debug("trp_connection_initiate: opening GSS connection to %s:%d",
263 err = gsscon_connect(server,
267 trp_connection_get_gssctx(conn));
268 tr_debug("trp_connection_initiate: connected");
274 trp_connection_set_fd(conn, fd);
275 trp_connection_set_status(conn, TRP_CONNECTION_UP);