FreeCalypso > hg > themwi-system-sw

annotate libsip/uas_basic.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 5427b26525cd
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
46
5427b26525cd libsip: beginning to flesh out
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 /*
5427b26525cd libsip: beginning to flesh out
Mychaela Falconia <falcon@freecalypso.org>
parents:
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2 * Here we implement some essential UAS functions.
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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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 <ctype.h>
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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6 #include <string.h>
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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7 #include <strings.h>
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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8 #include <stdio.h>
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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9 #include <stdlib.h>
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Mychaela Falconia <falcon@freecalypso.org>
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10 #include "parse.h"
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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11 #include "uas_basic.h"
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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12 #include "out_msg.h"
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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13
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Mychaela Falconia <falcon@freecalypso.org>
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14 extern char *get_single_header();
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Mychaela Falconia <falcon@freecalypso.org>
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15
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Mychaela Falconia <falcon@freecalypso.org>
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16 uas_get_basic_headers(msg, ess)
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Mychaela Falconia <falcon@freecalypso.org>
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17 struct sip_pkt_rx *msg;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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18 struct uas_parse_hdrs *ess;
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Mychaela Falconia <falcon@freecalypso.org>
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19 {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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20 char *hval, *cp;
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Mychaela Falconia <falcon@freecalypso.org>
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21 int dup_flag = 0;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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22
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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23 hval = get_single_header(msg, "Call-ID", "i", &dup_flag);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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24 if (!hval || dup_flag) {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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25 ess->error_field = "Call-ID";
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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26 return(-1);
5427b26525cd libsip: beginning to flesh out
Mychaela Falconia <falcon@freecalypso.org>
parents:
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27 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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28 ess->call_id = hval;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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29 hval = get_single_header(msg, "CSeq", (char *) 0, &dup_flag);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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30 if (!hval || dup_flag) {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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31 bad_cseq: ess->error_field = "CSeq";
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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32 return(-1);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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33 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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34 if (!isdigit(*hval))
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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35 goto bad_cseq;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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36 ess->cseq_num = strtoul(hval, &cp, 10);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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37 if (*cp) {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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38 if (!isspace(*cp))
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Mychaela Falconia <falcon@freecalypso.org>
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39 goto bad_cseq;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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40 while (isspace(*cp))
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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41 cp++;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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42 if (strcmp(cp, msg->req_method))
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Mychaela Falconia <falcon@freecalypso.org>
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43 goto bad_cseq;
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Mychaela Falconia <falcon@freecalypso.org>
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44 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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45 hval = get_single_header(msg, "From", "f", &dup_flag);
5427b26525cd libsip: beginning to flesh out
Mychaela Falconia <falcon@freecalypso.org>
parents:
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46 if (!hval || dup_flag) {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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47 ess->error_field = "From";
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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48 return(-1);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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49 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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50 ess->from = hval;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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51 hval = get_single_header(msg, "To", "t", &dup_flag);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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52 if (!hval || dup_flag) {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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53 ess->error_field = "To";
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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54 return(-1);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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55 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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56 ess->to = hval;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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57 hval = get_single_header(msg, "Via", "v", &dup_flag);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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58 if (!hval || dup_flag) {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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59 ess->error_field = "Via";
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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60 return(-1);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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61 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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62 ess->via = hval;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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63 return(0);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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64 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
65
5427b26525cd libsip: beginning to flesh out
Mychaela Falconia <falcon@freecalypso.org>
parents:
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66 add_resp_basic_headers(msg, ess, req_method)
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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67 struct sip_msg_out *msg;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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68 struct uas_parse_hdrs *ess;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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69 char *req_method;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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70 {
5427b26525cd libsip: beginning to flesh out
Mychaela Falconia <falcon@freecalypso.org>
parents:
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71 char cseq_str[80];
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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72 int rc;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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73
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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74 rc = out_msg_add_header(msg, "From", ess->from);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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75 if (rc < 0)
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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76 return rc;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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77 rc = out_msg_add_header(msg, "To", ess->to);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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78 if (rc < 0)
5427b26525cd libsip: beginning to flesh out
Mychaela Falconia <falcon@freecalypso.org>
parents:
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79 return rc;
5427b26525cd libsip: beginning to flesh out
Mychaela Falconia <falcon@freecalypso.org>
parents:
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80 rc = out_msg_add_header(msg, "Call-ID", ess->call_id);
5427b26525cd libsip: beginning to flesh out
Mychaela Falconia <falcon@freecalypso.org>
parents:
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81 if (rc < 0)
5427b26525cd libsip: beginning to flesh out
Mychaela Falconia <falcon@freecalypso.org>
parents:
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82 return rc;
5427b26525cd libsip: beginning to flesh out
Mychaela Falconia <falcon@freecalypso.org>
parents:
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83 sprintf(cseq_str, "%u %.64s", ess->cseq_num, req_method);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
84 rc = out_msg_add_header(msg, "CSeq", cseq_str);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
85 if (rc < 0)
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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86 return rc;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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87 return out_msg_add_header(msg, "Via", ess->via);
5427b26525cd libsip: beginning to flesh out
Mychaela Falconia <falcon@freecalypso.org>
parents:
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88 }