FreeCalypso > hg > themwi-system-sw

annotate sip-out/mgw_sock.c @ 257:cb440d003976

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sip-out: add libnumdb2 infra in prep for E911 routing
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 15 Aug 2023 10:50:37 -0800
parents e54b0a9e322f
children
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1 /*
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2 * In this module we implement our local socket interface to themwi-mgw.
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3 */
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4
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5 #include <sys/types.h>
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6 #include <sys/socket.h>
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7 #include <sys/un.h>
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8 #include <stdio.h>
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9 #include <stdint.h>
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10 #include <stdlib.h>
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11 #include <syslog.h>
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12 #include "../include/tmgw_ctrl.h"
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13
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14 static char tmgw_socket_pathname[] = "/var/gsm/tmgw_socket";
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16 int mgw_socket, mgw_is_connected;
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18 connect_tmgw_socket()
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19 {
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20 struct sockaddr_un sa;
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21 unsigned sa_len;
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22 int rc;
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24 if (mgw_is_connected)
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25 return(0);
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26 mgw_socket = socket(AF_UNIX, SOCK_SEQPACKET, 0);
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27 if (mgw_socket < 0) {
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28 syslog(LOG_CRIT, "socket(AF_UNIX, SOCK_SEQPACKET, 0): %m");
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29 return(-1);
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30 }
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31 fill_sockaddr_un(tmgw_socket_pathname, &sa, &sa_len);
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32 rc = connect(mgw_socket, (struct sockaddr *) &sa, sa_len);
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33 if (rc < 0) {
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34 syslog(LOG_ERR, "connect to %s: %m", tmgw_socket_pathname);
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35 close(mgw_socket);
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36 return(-1);
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37 }
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38 update_max_fd(mgw_socket);
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39 mgw_is_connected = 1;
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40 return(0);
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41 }
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42
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43 void
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44 mgw_socket_select()
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45 {
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46 struct tmgw_ctrl_resp msg;
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47 int rc;
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48
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49 rc = recv(mgw_socket, &msg, sizeof msg, 0);
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50 if (rc <= 0) {
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51 syslog(LOG_ERR, "themwi-mgw socket disconnected");
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52 close(mgw_socket);
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53 mgw_is_connected = 0;
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54 shutdown_mgw_conn();
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55 return;
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56 }
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57 if (rc != sizeof(struct tmgw_ctrl_resp)) {
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58 syslog(LOG_CRIT,
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59 "response packet from TMGW has wrong length: %d bytes",
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60 rc);
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61 exit(1);
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62 }
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63 process_tmgw_response(&msg);
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64 }
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66 send_req_to_tmgw(msg)
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67 struct tmgw_ctrl_req *msg;
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68 {
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69 return send(mgw_socket, msg, sizeof(struct tmgw_ctrl_req), 0);
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70 }