FreeCalypso > hg > themwi-system-sw
annotate sip-in/sip_uas.c @ 77:fe39404092d9
sip-in: generate To tags
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Tue, 20 Sep 2022 16:49:24 -0800 |
parents | 8cf85edca543 |
children | b0df2b200d77 |
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1 /* |
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2 * Basic UAS functions for themwi-sip-in. |
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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 <stdlib.h> |
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10 #include <string.h> |
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11 #include <strings.h> |
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12 #include <syslog.h> |
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13 #include "../libsip/parse.h" |
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14 #include "../libsip/uas_basic.h" |
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15 #include "../libsip/out_msg.h" |
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16 |
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17 static void |
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18 method_tbi(req, ess, sin) |
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19 struct sip_pkt_rx *req; |
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20 struct uas_parse_hdrs *ess; |
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21 struct sockaddr_in *sin; |
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22 { |
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23 syslog(LOG_ERR, "SIP method %s remains to be implemented", |
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24 req->req_method); |
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25 } |
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26 |
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27 static void |
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28 unsupported_method(req, ess, sin) |
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29 struct sip_pkt_rx *req; |
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30 struct uas_parse_hdrs *ess; |
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31 struct sockaddr_in *sin; |
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32 { |
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33 struct sip_msg_out resp; |
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34 int rc; |
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35 |
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36 start_response_out_msg(&resp, "501 Method not supported"); |
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37 rc = add_resp_basic_headers(&resp, ess, req->req_method); |
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38 if (rc < 0) { |
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39 too_long: syslog(LOG_ERR, "sending 501 error: response length exceeded"); |
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40 return; |
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41 } |
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42 rc = out_msg_add_header(&resp, "Allow", "INVITE,ACK,CANCEL,BYE"); |
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43 if (rc < 0) |
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44 goto too_long; |
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45 out_msg_finish(&resp); |
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46 sip_tx_packet(&resp, sin); |
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47 } |
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48 |
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49 void |
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50 process_sip_request(msg, sin) |
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51 struct sip_pkt_rx *msg; |
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52 struct sockaddr_in *sin; |
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53 { |
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54 struct uas_parse_hdrs ess; |
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55 int rc; |
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56 |
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57 rc = uas_get_basic_headers(msg, &ess); |
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58 if (rc < 0) { |
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59 syslog(LOG_ERR, "SIP %.16s request: bad or missing %s header", |
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60 msg->req_method, ess.error_field); |
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61 return; |
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62 } |
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63 /* dispatch by method */ |
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64 if (!strcmp(msg->req_method, "INVITE")) |
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65 handle_sip_invite(msg, &ess, sin); |
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66 else if (!strcmp(msg->req_method, "ACK")) |
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67 handle_sip_ack(msg, &ess, sin); |
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68 else if (!strcmp(msg->req_method, "CANCEL")) |
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69 method_tbi(msg, &ess, sin); |
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70 else if (!strcmp(msg->req_method, "BYE")) |
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71 method_tbi(msg, &ess, sin); |
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72 else |
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73 unsupported_method(msg, &ess, sin); |
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74 } |