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annotate mgw/mdcx.c @ 98:423610bb2c9e

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sip-in: send MDCX to TMGW to connect the call through
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 25 Sep 2022 20:28:54 -0800
parents f280328e7e2e
children 738be11ac432
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Mychaela Falconia <falcon@freecalypso.org>
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1 /*
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Mychaela Falconia <falcon@freecalypso.org>
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2 * In this module we implement our MDCX operation.
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3 */
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4
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5 #include <sys/types.h>
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Mychaela Falconia <falcon@freecalypso.org>
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6 #include <sys/socket.h>
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Mychaela Falconia <falcon@freecalypso.org>
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7 #include <netinet/in.h>
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Mychaela Falconia <falcon@freecalypso.org>
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8 #include <stdio.h>
38
020ba624bdd8 mgw source: #include <stdlib.h> in files using tmgw_ctrl.h
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9 #include <stdint.h>
32
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10 #include <stdlib.h>
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11 #include <string.h>
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12 #include <strings.h>
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13 #include <syslog.h>
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14 #include "../include/tmgw_ctrl.h"
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15 #include "../include/tmgw_const.h"
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16 #include "struct.h"
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17
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18 extern struct endpoint *find_ep_by_id();
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19
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20 mdcx_operation(ep, req, resp)
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21 struct endpoint *ep;
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22 struct tmgw_ctrl_req *req;
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23 struct tmgw_ctrl_resp *resp;
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24 {
95
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25 int rc;
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26
32
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27 if (req->setup_mask & TMGW_CTRL_MASK_GSM_CONN) {
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28 if (ep->ep_type != TMGW_EP_TYPE_GATEWAY) {
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29 resp->res = TMGW_RESP_ERR_PROT;
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30 return(-1);
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31 }
34
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32 if (req->gsm_addr.ss_family != AF_INET) {
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33 resp->res = TMGW_RESP_ERR_PARAM;
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34 return(-1);
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35 }
95
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36 if (req->gsm_payload_type > 0x7F) {
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37 resp->res = TMGW_RESP_ERR_PARAM;
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38 return(-1);
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39 }
34
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40 switch (req->gsm_payload_msg_type) {
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41 case GSM_TCHF_FRAME:
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42 break;
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43 case GSM_TCHF_FRAME_EFR:
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44 case GSM_TCHH_FRAME:
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45 case GSM_TCH_FRAME_AMR:
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46 resp->res = TMGW_RESP_ERR_NOTSUP;
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47 return(-1);
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48 default:
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49 resp->res = TMGW_RESP_ERR_PARAM;
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50 return(-1);
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51 }
95
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52 if (ep->gsm_payload_msg_type &&
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53 ep->gsm_payload_msg_type != req->gsm_payload_msg_type) {
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54 resp->res = TMGW_RESP_ERR_PROT;
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55 return(-1);
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56 }
32
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57 bcopy(&req->gsm_addr, &ep->rtp_gsm.remote_addr,
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58 sizeof(struct sockaddr_in));
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59 ep->gsm_payload_type = req->gsm_payload_type;
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60 ep->gsm_payload_msg_type = req->gsm_payload_msg_type;
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61 }
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62 if (req->setup_mask & TMGW_CTRL_MASK_PSTN_CONN) {
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63 if (ep->ep_type != TMGW_EP_TYPE_GATEWAY) {
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64 resp->res = TMGW_RESP_ERR_PROT;
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65 return(-1);
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66 }
34
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67 if (req->pstn_addr.ss_family != AF_INET) {
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68 resp->res = TMGW_RESP_ERR_PARAM;
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69 return(-1);
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70 }
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71 switch (req->pstn_payload_type) {
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72 case PSTN_CODEC_PCMU:
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73 case PSTN_CODEC_PCMA:
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74 break;
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75 default:
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76 resp->res = TMGW_RESP_ERR_PARAM;
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77 return(-1);
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78 }
32
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79 bcopy(&req->pstn_addr, &ep->rtp_pstn.remote_addr,
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80 sizeof(struct sockaddr_in));
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81 ep->pstn_payload_type = req->pstn_payload_type;
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82 }
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83 if (req->setup_mask & TMGW_CTRL_MASK_FWD_MODE) {
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84 if (ep->ep_type != TMGW_EP_TYPE_GATEWAY ||
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85 ep->rtp_gsm.remote_addr.sin_family != AF_INET ||
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86 ep->rtp_pstn.remote_addr.sin_family != AF_INET) {
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87 resp->res = TMGW_RESP_ERR_PROT;
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88 return(-1);
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89 }
95
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90 if ((req->fwd_mode & TMGW_FWD_ENABLE_PSTN2GSM) &&
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91 !(ep->fwd_mode & TMGW_FWD_ENABLE_PSTN2GSM)) {
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92 rc = pstn2gsm_init(ep);
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93 if (rc != TMGW_RESP_OK) {
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94 resp->res = rc;
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95 return(-1);
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96 }
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97 }
32
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98 ep->fwd_mode = req->fwd_mode;
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99 }
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100 return(0);
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101 }
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102
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103 void
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104 process_mdcx(conn, req, resp)
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105 struct ctrl_conn *conn;
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106 struct tmgw_ctrl_req *req;
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107 struct tmgw_ctrl_resp *resp;
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108 {
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109 struct endpoint *ep;
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110 int rc;
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111
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112 ep = find_ep_by_id(conn, req->ep_id);
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113 if (!ep) {
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114 resp->res = TMGW_RESP_ERR_PROT;
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115 return;
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Mychaela Falconia <falcon@freecalypso.org>
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116 }
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117 rc = mdcx_operation(ep, req, resp);
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118 if (rc == 0)
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119 resp->res = TMGW_RESP_OK;
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120 }