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annotate mgw/dlcx.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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32
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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 DLCX operation.
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Mychaela Falconia <falcon@freecalypso.org>
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3 */
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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 <unistd.h>
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Mychaela Falconia <falcon@freecalypso.org>
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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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Mychaela Falconia <falcon@freecalypso.org>
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17 #include "select.h"
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18
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Mychaela Falconia <falcon@freecalypso.org>
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19 extern struct endpoint *find_ep_by_id();
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20
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21 static struct endpoint *delq;
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22
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23 static void
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Mychaela Falconia <falcon@freecalypso.org>
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24 put_on_delq(ep)
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Mychaela Falconia <falcon@freecalypso.org>
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25 struct endpoint *ep;
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Mychaela Falconia <falcon@freecalypso.org>
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26 {
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27 ep->next = delq;
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Mychaela Falconia <falcon@freecalypso.org>
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28 delq = ep;
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Mychaela Falconia <falcon@freecalypso.org>
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29 }
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Mychaela Falconia <falcon@freecalypso.org>
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30
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Mychaela Falconia <falcon@freecalypso.org>
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31 void
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Mychaela Falconia <falcon@freecalypso.org>
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32 process_dlcx(conn, req, resp)
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Mychaela Falconia <falcon@freecalypso.org>
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33 struct ctrl_conn *conn;
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Mychaela Falconia <falcon@freecalypso.org>
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34 struct tmgw_ctrl_req *req;
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Mychaela Falconia <falcon@freecalypso.org>
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35 struct tmgw_ctrl_resp *resp;
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36 {
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37 struct endpoint *ep, **epp;
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38
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39 for (epp = &conn->endp_list; ep = *epp; epp = &ep->next)
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Mychaela Falconia <falcon@freecalypso.org>
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40 if (ep->ep_id == req->ep_id)
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41 break;
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Mychaela Falconia <falcon@freecalypso.org>
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42 if (!ep) {
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Mychaela Falconia <falcon@freecalypso.org>
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43 resp->res = TMGW_RESP_ERR_PROT;
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Mychaela Falconia <falcon@freecalypso.org>
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44 return;
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45 }
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Mychaela Falconia <falcon@freecalypso.org>
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46 syslog(LOG_INFO, "DLCX endpoint id %u", ep->ep_id);
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Mychaela Falconia <falcon@freecalypso.org>
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47 *epp = ep->next;
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48 put_on_delq(ep);
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49 resp->res = TMGW_RESP_OK;
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50 }
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51
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52 void
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Mychaela Falconia <falcon@freecalypso.org>
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53 dlcx_all_on_conn(conn)
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54 struct ctrl_conn *conn;
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55 {
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56 struct endpoint *ep, *np;
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57
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58 for (ep = conn->endp_list; ep; ep = np) {
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59 np = ep->next;
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60 put_on_delq(ep);
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61 }
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62 }
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63
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64 void
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Mychaela Falconia <falcon@freecalypso.org>
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65 free_rtp_end(roe)
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Mychaela Falconia <falcon@freecalypso.org>
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66 struct rtp_one_end *roe;
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67 {
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Mychaela Falconia <falcon@freecalypso.org>
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68 close(roe->rtp_fd);
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69 close(roe->rtcp_fd);
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70 FD_CLR(roe->rtp_fd, &select_for_read);
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71 FD_CLR(roe->rtcp_fd, &select_for_read);
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72 }
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73
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74 void
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75 free_deleted_endpoints()
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76 {
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77 struct endpoint *ep, *np;
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78
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79 for (ep = delq; ep; ep = np) {
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80 np = ep->next;
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81 if (ep->ep_type & TMGW_EP_HAS_GSM_SOCK)
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82 free_rtp_end(&ep->rtp_gsm);
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83 if (ep->ep_type & TMGW_EP_HAS_PSTN_SOCK)
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Mychaela Falconia <falcon@freecalypso.org>
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84 free_rtp_end(&ep->rtp_pstn);
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Mychaela Falconia <falcon@freecalypso.org>
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85 free(ep);
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86 }
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Mychaela Falconia <falcon@freecalypso.org>
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87 delq = 0;
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88 }