FreeCalypso > hg > themwi-system-sw
annotate libsip/uas_basic.c @ 63:e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sun, 18 Sep 2022 15:01:11 -0800 |
parents | 5427b26525cd |
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rev | line source |
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46
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1 /* |
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2 * Here we implement some essential UAS functions. |
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3 */ |
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4 |
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5 #include <ctype.h> |
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6 #include <string.h> |
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7 #include <strings.h> |
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8 #include <stdio.h> |
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9 #include <stdlib.h> |
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10 #include "parse.h" |
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11 #include "uas_basic.h" |
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12 #include "out_msg.h" |
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13 |
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14 extern char *get_single_header(); |
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15 |
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16 uas_get_basic_headers(msg, ess) |
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17 struct sip_pkt_rx *msg; |
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18 struct uas_parse_hdrs *ess; |
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19 { |
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20 char *hval, *cp; |
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21 int dup_flag = 0; |
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22 |
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23 hval = get_single_header(msg, "Call-ID", "i", &dup_flag); |
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24 if (!hval || dup_flag) { |
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25 ess->error_field = "Call-ID"; |
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26 return(-1); |
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27 } |
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28 ess->call_id = hval; |
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29 hval = get_single_header(msg, "CSeq", (char *) 0, &dup_flag); |
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30 if (!hval || dup_flag) { |
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31 bad_cseq: ess->error_field = "CSeq"; |
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32 return(-1); |
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33 } |
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34 if (!isdigit(*hval)) |
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35 goto bad_cseq; |
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36 ess->cseq_num = strtoul(hval, &cp, 10); |
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37 if (*cp) { |
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38 if (!isspace(*cp)) |
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39 goto bad_cseq; |
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40 while (isspace(*cp)) |
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41 cp++; |
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42 if (strcmp(cp, msg->req_method)) |
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43 goto bad_cseq; |
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44 } |
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45 hval = get_single_header(msg, "From", "f", &dup_flag); |
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46 if (!hval || dup_flag) { |
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47 ess->error_field = "From"; |
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48 return(-1); |
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49 } |
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50 ess->from = hval; |
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51 hval = get_single_header(msg, "To", "t", &dup_flag); |
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52 if (!hval || dup_flag) { |
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53 ess->error_field = "To"; |
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54 return(-1); |
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55 } |
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56 ess->to = hval; |
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57 hval = get_single_header(msg, "Via", "v", &dup_flag); |
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58 if (!hval || dup_flag) { |
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59 ess->error_field = "Via"; |
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60 return(-1); |
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61 } |
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62 ess->via = hval; |
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63 return(0); |
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64 } |
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65 |
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66 add_resp_basic_headers(msg, ess, req_method) |
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67 struct sip_msg_out *msg; |
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68 struct uas_parse_hdrs *ess; |
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69 char *req_method; |
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70 { |
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71 char cseq_str[80]; |
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72 int rc; |
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73 |
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74 rc = out_msg_add_header(msg, "From", ess->from); |
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75 if (rc < 0) |
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76 return rc; |
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77 rc = out_msg_add_header(msg, "To", ess->to); |
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78 if (rc < 0) |
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79 return rc; |
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80 rc = out_msg_add_header(msg, "Call-ID", ess->call_id); |
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81 if (rc < 0) |
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82 return rc; |
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83 sprintf(cseq_str, "%u %.64s", ess->cseq_num, req_method); |
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84 rc = out_msg_add_header(msg, "CSeq", cseq_str); |
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85 if (rc < 0) |
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86 return rc; |
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87 return out_msg_add_header(msg, "Via", ess->via); |
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88 } |