FreeCalypso > hg > themwi-system-sw

annotate mgw/mdcx.c @ 124:7e04d28fae8b

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sip-in: default use-100rel to no BulkVS servers act badly when we send a reliable 180 Ringing response to an incoming call, even though they advertise 100rel support in the Supported header in the INVITE packet, and we probably won't be implementing 100rel for outbound because doing per-the-spec PRACK as a UAC is just too burdensome. Therefore, we need to consider 100rel extension as not-really-supported in themwi-system-sw.
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 01 Oct 2022 15:54:50 -0800
parents 3b3f07b112f3
children f062c32a5116
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1 /*
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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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6 #include <sys/socket.h>
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7 #include <netinet/in.h>
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8 #include <stdio.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 #include "int_defs.h"
32
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18
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19 extern struct endpoint *find_ep_by_id();
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20
100
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21 static void
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22 gsm_vars_init(ep)
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23 struct endpoint *ep;
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24 {
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25 switch (ep->gsm_payload_msg_type) {
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26 case GSM_TCHF_FRAME:
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27 ep->gsm_rtp_pkt_size = RTP_PACKET_SIZE_GSM_FR;
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28 ep->gsm_payload_magic = 0xD0;
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29 return;
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30 case GSM_TCHF_FRAME_EFR:
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31 ep->gsm_rtp_pkt_size = RTP_PACKET_SIZE_GSM_EFR;
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32 ep->gsm_payload_magic = 0xC0;
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33 return;
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34 }
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35 }
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36
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37 mdcx_operation(ep, req)
32
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38 struct endpoint *ep;
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39 struct tmgw_ctrl_req *req;
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40 {
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41 int rc;
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42
32
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43 if (req->setup_mask & TMGW_CTRL_MASK_GSM_CONN) {
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44 if (ep->ep_type != TMGW_EP_TYPE_GATEWAY)
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45 return TMGW_RESP_ERR_PROT;
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46 if (req->gsm_addr.ss_family != AF_INET)
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47 return TMGW_RESP_ERR_PARAM;
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48 if (req->gsm_payload_type > 0x7F)
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49 return TMGW_RESP_ERR_PARAM;
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50 switch (req->gsm_payload_msg_type) {
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51 case GSM_TCHF_FRAME:
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52 break;
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53 case GSM_TCHF_FRAME_EFR:
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54 case GSM_TCHH_FRAME:
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55 case GSM_TCH_FRAME_AMR:
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56 return TMGW_RESP_ERR_NOTSUP;
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57 default:
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58 return TMGW_RESP_ERR_PARAM;
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59 }
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60 if (ep->gsm_payload_msg_type &&
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61 ep->gsm_payload_msg_type != req->gsm_payload_msg_type)
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62 return TMGW_RESP_ERR_PROT;
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63 bcopy(&req->gsm_addr, &ep->rtp_gsm.remote_addr,
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64 sizeof(struct sockaddr_in));
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65 ep->gsm_payload_type = req->gsm_payload_type;
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66 ep->gsm_payload_msg_type = req->gsm_payload_msg_type;
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67 gsm_vars_init(ep);
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68 }
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69 if (req->setup_mask & TMGW_CTRL_MASK_PSTN_CONN) {
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70 if (ep->ep_type != TMGW_EP_TYPE_GATEWAY)
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71 return TMGW_RESP_ERR_PROT;
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72 if (req->pstn_addr.ss_family != AF_INET)
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73 return TMGW_RESP_ERR_PARAM;
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74 switch (req->pstn_payload_type) {
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75 case PSTN_CODEC_PCMU:
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76 case PSTN_CODEC_PCMA:
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77 break;
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78 default:
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79 return TMGW_RESP_ERR_PARAM;
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80 }
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81 bcopy(&req->pstn_addr, &ep->rtp_pstn.remote_addr,
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82 sizeof(struct sockaddr_in));
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83 ep->pstn_payload_type = req->pstn_payload_type;
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84 }
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85 if (req->setup_mask & TMGW_CTRL_MASK_FWD_MODE) {
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86 if (ep->ep_type != TMGW_EP_TYPE_GATEWAY ||
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87 ep->rtp_gsm.remote_addr.sin_family != AF_INET ||
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88 ep->rtp_pstn.remote_addr.sin_family != AF_INET)
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89 return TMGW_RESP_ERR_PROT;
103
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90 if ((req->fwd_mode & TMGW_FWD_ENABLE_GSM2PSTN) &&
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91 !(ep->fwd_mode & TMGW_FWD_ENABLE_GSM2PSTN)) {
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92 rc = gsm2pstn_init(ep);
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93 if (rc != TMGW_RESP_OK)
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94 return rc;
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95 }
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96 if ((req->fwd_mode & TMGW_FWD_ENABLE_PSTN2GSM) &&
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97 !(ep->fwd_mode & TMGW_FWD_ENABLE_PSTN2GSM)) {
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98 rc = pstn2gsm_init(ep);
99
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99 if (rc != TMGW_RESP_OK)
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100 return rc;
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101 }
32
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102 ep->fwd_mode = req->fwd_mode;
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103 }
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104 return TMGW_RESP_OK;
32
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105 }
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106
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107 void
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108 process_mdcx(conn, req, resp)
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109 struct ctrl_conn *conn;
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110 struct tmgw_ctrl_req *req;
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111 struct tmgw_ctrl_resp *resp;
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112 {
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113 struct endpoint *ep;
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114 int rc;
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115
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116 ep = find_ep_by_id(conn, req->ep_id);
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117 if (!ep) {
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118 resp->res = TMGW_RESP_ERR_PROT;
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119 return;
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120 }
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121 resp->res = mdcx_operation(ep, req);
32
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122 }