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annotate mgw/mdcx.c @ 34:7dae2bae56a1

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themwi-mgw: implement MDCX parameter validation
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 09 Jul 2022 23:17:15 -0800
parents b3f74df7b808
children 020ba624bdd8
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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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Mychaela Falconia <falcon@freecalypso.org>
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3 */
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Mychaela Falconia <falcon@freecalypso.org>
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4
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Mychaela Falconia <falcon@freecalypso.org>
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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>
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Mychaela Falconia <falcon@freecalypso.org>
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9 #include <stdlib.h>
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Mychaela Falconia <falcon@freecalypso.org>
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10 #include <string.h>
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Mychaela Falconia <falcon@freecalypso.org>
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11 #include <strings.h>
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Mychaela Falconia <falcon@freecalypso.org>
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12 #include <syslog.h>
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Mychaela Falconia <falcon@freecalypso.org>
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13 #include "../include/tmgw_ctrl.h"
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14 #include "../include/tmgw_const.h"
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15 #include "struct.h"
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16
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Mychaela Falconia <falcon@freecalypso.org>
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17 extern struct endpoint *find_ep_by_id();
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Mychaela Falconia <falcon@freecalypso.org>
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18
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Mychaela Falconia <falcon@freecalypso.org>
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19 mdcx_operation(ep, req, resp)
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Mychaela Falconia <falcon@freecalypso.org>
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20 struct endpoint *ep;
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Mychaela Falconia <falcon@freecalypso.org>
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21 struct tmgw_ctrl_req *req;
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Mychaela Falconia <falcon@freecalypso.org>
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22 struct tmgw_ctrl_resp *resp;
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Mychaela Falconia <falcon@freecalypso.org>
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23 {
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Mychaela Falconia <falcon@freecalypso.org>
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24 if (req->setup_mask & TMGW_CTRL_MASK_GSM_CONN) {
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Mychaela Falconia <falcon@freecalypso.org>
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25 if (ep->ep_type != TMGW_EP_TYPE_GATEWAY) {
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Mychaela Falconia <falcon@freecalypso.org>
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26 resp->res = TMGW_RESP_ERR_PROT;
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Mychaela Falconia <falcon@freecalypso.org>
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27 return(-1);
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Mychaela Falconia <falcon@freecalypso.org>
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28 }
34
7dae2bae56a1 themwi-mgw: implement MDCX parameter validation
Mychaela Falconia <falcon@freecalypso.org>
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29 if (req->gsm_addr.ss_family != AF_INET) {
7dae2bae56a1 themwi-mgw: implement MDCX parameter validation
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30 resp->res = TMGW_RESP_ERR_PARAM;
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31 return(-1);
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32 }
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33 switch (req->gsm_payload_msg_type) {
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34 case GSM_TCHF_FRAME:
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35 break;
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36 case GSM_TCHF_FRAME_EFR:
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37 case GSM_TCHH_FRAME:
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38 case GSM_TCH_FRAME_AMR:
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39 resp->res = TMGW_RESP_ERR_NOTSUP;
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40 return(-1);
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41 default:
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42 resp->res = TMGW_RESP_ERR_PARAM;
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43 return(-1);
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44 }
32
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Mychaela Falconia <falcon@freecalypso.org>
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45 bcopy(&req->gsm_addr, &ep->rtp_gsm.remote_addr,
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Mychaela Falconia <falcon@freecalypso.org>
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46 sizeof(struct sockaddr_in));
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47 ep->gsm_payload_type = req->gsm_payload_type;
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48 ep->gsm_payload_msg_type = req->gsm_payload_msg_type;
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Mychaela Falconia <falcon@freecalypso.org>
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49 }
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Mychaela Falconia <falcon@freecalypso.org>
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50 if (req->setup_mask & TMGW_CTRL_MASK_PSTN_CONN) {
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51 if (ep->ep_type != TMGW_EP_TYPE_GATEWAY) {
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52 resp->res = TMGW_RESP_ERR_PROT;
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53 return(-1);
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54 }
34
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55 if (req->pstn_addr.ss_family != AF_INET) {
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56 resp->res = TMGW_RESP_ERR_PARAM;
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57 return(-1);
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58 }
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59 switch (req->pstn_payload_type) {
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60 case PSTN_CODEC_PCMU:
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61 case PSTN_CODEC_PCMA:
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62 break;
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63 default:
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64 resp->res = TMGW_RESP_ERR_PARAM;
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65 return(-1);
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66 }
32
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67 bcopy(&req->pstn_addr, &ep->rtp_pstn.remote_addr,
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68 sizeof(struct sockaddr_in));
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69 ep->pstn_payload_type = req->pstn_payload_type;
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70 }
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71 if (req->setup_mask & TMGW_CTRL_MASK_FWD_MODE) {
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72 if (ep->ep_type != TMGW_EP_TYPE_GATEWAY ||
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73 ep->rtp_gsm.remote_addr.sin_family != AF_INET ||
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74 ep->rtp_pstn.remote_addr.sin_family != AF_INET) {
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75 resp->res = TMGW_RESP_ERR_PROT;
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76 return(-1);
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77 }
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Mychaela Falconia <falcon@freecalypso.org>
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78 ep->fwd_mode = req->fwd_mode;
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79 }
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Mychaela Falconia <falcon@freecalypso.org>
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80 return(0);
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81 }
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82
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83 void
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Mychaela Falconia <falcon@freecalypso.org>
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84 process_mdcx(conn, req, resp)
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Mychaela Falconia <falcon@freecalypso.org>
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85 struct ctrl_conn *conn;
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86 struct tmgw_ctrl_req *req;
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87 struct tmgw_ctrl_resp *resp;
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88 {
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89 struct endpoint *ep;
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Mychaela Falconia <falcon@freecalypso.org>
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90 int rc;
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91
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92 ep = find_ep_by_id(conn, req->ep_id);
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93 if (!ep) {
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94 resp->res = TMGW_RESP_ERR_PROT;
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95 return;
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Mychaela Falconia <falcon@freecalypso.org>
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96 }
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Mychaela Falconia <falcon@freecalypso.org>
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97 rc = mdcx_operation(ep, req, resp);
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Mychaela Falconia <falcon@freecalypso.org>
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98 if (rc == 0)
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Mychaela Falconia <falcon@freecalypso.org>
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99 resp->res = TMGW_RESP_OK;
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100 }