aboutsummaryrefslogtreecommitdiffstats
path: root/src/libmncc/mncc_sock.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/libmncc/mncc_sock.c')
-rw-r--r--src/libmncc/mncc_sock.c239
1 files changed, 0 insertions, 239 deletions
diff --git a/src/libmncc/mncc_sock.c b/src/libmncc/mncc_sock.c
deleted file mode 100644
index bab4698..0000000
--- a/src/libmncc/mncc_sock.c
+++ /dev/null
@@ -1,239 +0,0 @@
-/* Mobie Network Call Control (MNCC) socket handling
- *
- * (C) 2016 by Andreas Eversberg <jolly@eversberg.eu>
- * All Rights Reserved
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <stdio.h>
-#include <stdint.h>
-#include <errno.h>
-#include <string.h>
-#include <fcntl.h>
-#include <sys/socket.h>
-#include <sys/un.h>
-#include <stddef.h>
-#include <unistd.h>
-#include "../libsample/sample.h"
-#include "../libdebug/debug.h"
-#include "../libmobile/call.h"
-#include "cause.h"
-#include "mncc_sock.h"
-
-static int listen_sock = -1;
-static int mncc_sock = -1;
-
-/* write to mncc socket, return error or -EIO if no socket connection */
-static int mncc_write(uint8_t *buf, int length)
-{
- int rc;
-
- if (mncc_sock <= 0) {
- PDEBUG(DMNCC, DEBUG_NOTICE, "We have no MNCC connection, rejecting.\n");
- return -CAUSE_TEMPFAIL;
- }
- rc = send(mncc_sock, buf, length, 0);
- if (rc < 0) {
- PDEBUG(DMNCC, DEBUG_ERROR, "MNCC connection failed (errno = %d).\n", errno);
- mncc_sock_close();
- return -CAUSE_TEMPFAIL;
- }
- if (rc != length) {
- PDEBUG(DMNCC, DEBUG_NOTICE, "MNCC write failed.\n");
- mncc_sock_close();
- return -CAUSE_TEMPFAIL;
- }
-
- return 0;
-}
-
-
-/* read from mncc socket */
-static int mncc_read(void)
-{
- uint8_t buf[sizeof(struct gsm_mncc)+1024];
- int rc;
-
- memset(buf, 0, sizeof(buf));
- rc = recv(mncc_sock, buf, sizeof(buf), 0);
- if (rc == 0) {
- PDEBUG(DMNCC, DEBUG_NOTICE, "MNCC connection closed.\n");
- mncc_sock_close();
- return 0;
- }
- if (rc < 0) {
- if (errno == EWOULDBLOCK)
- return -errno;
- PDEBUG(DMNCC, DEBUG_ERROR, "MNCC connection failed (errno = %d).\n", errno);
- mncc_sock_close();
- return -errno;
- }
-
- mncc_down(buf, rc);
-
- return rc;
-}
-
-static void mncc_hello(void)
-{
- struct gsm_mncc_hello hello;
-
- memset(&hello, 0, sizeof(hello));
- hello.msg_type = MNCC_SOCKET_HELLO;
- hello.version = MNCC_SOCK_VERSION;
- hello.mncc_size = sizeof(struct gsm_mncc);
- hello.data_frame_size = sizeof(struct gsm_data_frame);
- hello.called_offset = offsetof(struct gsm_mncc, called);
- hello.signal_offset = offsetof(struct gsm_mncc, signal);
- hello.emergency_offset = offsetof(struct gsm_mncc, emergency);
- hello.lchan_type_offset = offsetof(struct gsm_mncc, lchan_type);
-
- mncc_write((uint8_t *) &hello, sizeof(hello));
-}
-
-
-static int mncc_accept(void)
-{
- struct sockaddr_un __attribute__((__unused__)) un_addr;
- socklen_t __attribute__((__unused__)) len;
- int flags;
- int rc;
-
- len = sizeof(un_addr);
- rc = accept(listen_sock, (struct sockaddr *) &un_addr, &len);
- if (rc < 0) {
- if (errno == EWOULDBLOCK)
- return 0;
- PDEBUG(DMNCC, DEBUG_ERROR, "Failed to accept incoming connection (errno=%d).\n", errno);
- return rc;
- }
-
- if (mncc_sock > 0) {
- PDEBUG(DMNCC, DEBUG_NOTICE, "Rejecting multiple incoming connections.\n");
- close(rc);
- return -EIO;
- }
-
- mncc_sock = rc;
- flags = fcntl(mncc_sock, F_GETFL, 0);
- rc = fcntl(mncc_sock, F_SETFL, flags | O_NONBLOCK);
- if (rc < 0) {
- PDEBUG(DMNCC, DEBUG_ERROR, "Failed to set socket into non-blocking IO mode.\n");
- mncc_sock_close();
- return rc;
- }
-
- PDEBUG(DMNCC, DEBUG_NOTICE, "MNCC socket connected.\n");
-
- mncc_hello();
-
- return 1;
-}
-
-void mncc_sock_handle(void)
-{
- mncc_accept();
-
- if (mncc_sock > 0) {
- while ((mncc_read()) > 0)
- ;
- }
-}
-
-
-void mncc_sock_close(void)
-{
- if (mncc_sock > 0) {
- PDEBUG(DMNCC, DEBUG_NOTICE, "MNCC socket disconnected.\n");
- close(mncc_sock);
- mncc_sock = -1;
- /* clear all call instances */
- mncc_flush();
- }
-}
-
-int mncc_sock_init(const char *sock_name)
-{
- struct sockaddr_un local;
- unsigned int namelen;
- int flags;
- int rc;
-
- listen_sock = socket(PF_UNIX, SOCK_SEQPACKET, 0);
- if (listen_sock < 0) {
- PDEBUG(DMNCC, DEBUG_ERROR, "Failed to create socket.\n");
- return listen_sock;
- }
-
- local.sun_family = AF_UNIX;
- strncpy(local.sun_path, sock_name, sizeof(local.sun_path));
- local.sun_path[sizeof(local.sun_path) - 1] = '\0';
- unlink(local.sun_path);
-
- /* we use the same magic that X11 uses in Xtranssock.c for
- * calculating the proper length of the sockaddr */
-#if defined(BSD44SOCKETS) || defined(__UNIXWARE__)
- local.sun_len = strlen(local.sun_path);
-#endif
-#if defined(BSD44SOCKETS) || defined(SUN_LEN)
- namelen = SUN_LEN(&local);
-#else
- namelen = strlen(local.sun_path) +
- offsetof(struct sockaddr_un, sun_path);
-#endif
-
- rc = bind(listen_sock, (struct sockaddr *) &local, namelen);
- if (rc < 0) {
- PDEBUG(DMNCC, DEBUG_ERROR, "Failed to bind the unix domain "
- "socket. '%s'\n", local.sun_path);
- mncc_sock_exit();
- return rc;
- }
-
- rc = listen(listen_sock, 0);
- if (rc < 0) {
- PDEBUG(DMNCC, DEBUG_ERROR, "Failed to listen.\n");
- mncc_sock_exit();
- return rc;
- }
-
- flags = fcntl(listen_sock, F_GETFL, 0);
- flags = 0;
- rc = fcntl(listen_sock, F_SETFL, flags | O_NONBLOCK);
- if (rc < 0) {
- PDEBUG(DMNCC, DEBUG_ERROR, "Failed to set socket into non-blocking IO mode.\n");
- mncc_sock_exit();
- return rc;
- }
-
- mncc_up = mncc_write;
-
- PDEBUG(DMNCC, DEBUG_DEBUG, "MNCC socket at '%s' initialized, waiting for connection.\n", sock_name);
-
- return 0;
-}
-
-void mncc_sock_exit(void)
-{
- mncc_sock_close();
-
- if (listen_sock > 0) {
- close(listen_sock);
- listen_sock = -1;
- }
-
- PDEBUG(DMNCC, DEBUG_DEBUG, "MNCC socket removed.\n");
-}
-