FreeCalypso > hg > themwi-system-sw
annotate libsip/req_supp.c @ 203:e89619893c1e
sip-out: require minimum of 7 digits for E.164 numbers
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Tue, 04 Apr 2023 21:09:50 -0800 |
parents | dec31b1a8b96 |
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sip-in: check Require and Supported
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1 /* |
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2 * Here we parse Require and Supported headers in a SIP request, |
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3 * checking whether our supported extensions are also supported |
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4 * or required by the client, and catching any client requirements |
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5 * which we don't support. |
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6 */ |
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7 |
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8 #include <ctype.h> |
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9 #include <string.h> |
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10 #include <strings.h> |
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11 #include "parse.h" |
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12 #include "req_supp.h" |
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13 |
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14 parse_require_supported(msg, lsupp, nlsupp, unsupp) |
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15 struct sip_pkt_rx *msg; |
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16 struct supported_ext *lsupp; |
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17 unsigned nlsupp; |
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18 char **unsupp; |
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19 { |
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20 struct sip_parse_hdr *hdr, *endhdr; |
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21 char *cp, *np; |
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22 unsigned n; |
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23 |
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24 endhdr = msg->hdr_fields + msg->num_hdr_fields; |
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25 /* check Require first */ |
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26 for (hdr = msg->hdr_fields; hdr < endhdr; hdr++) { |
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27 if (strcasecmp(hdr->field_name, "Require")) |
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28 continue; |
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29 cp = hdr->field_value; |
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30 for (;;) { |
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31 while (isspace(*cp) || *cp == ',') |
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32 cp++; |
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33 if (!*cp) |
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34 break; |
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35 np = cp; |
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36 while (*cp && !isspace(*cp) && *cp != ',') |
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37 cp++; |
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38 if (*cp) |
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39 *cp++ = '\0'; |
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40 for (n = 0; n < nlsupp; n++) { |
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41 if (!strcasecmp(np, lsupp[n].name)) { |
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42 *lsupp[n].req_flag = 1; |
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43 break; |
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44 } else { |
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45 if (unsupp) |
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46 *unsupp = np; |
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47 return(-1); |
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48 } |
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49 } |
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50 } |
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51 } |
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52 /* now check Supported */ |
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53 for (hdr = msg->hdr_fields; hdr < endhdr; hdr++) { |
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54 if (strcasecmp(hdr->field_name, "Supported") && |
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55 strcasecmp(hdr->field_name, "k")) |
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56 continue; |
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57 cp = hdr->field_value; |
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58 for (;;) { |
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59 while (isspace(*cp) || *cp == ',') |
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60 cp++; |
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61 if (!*cp) |
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62 break; |
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63 np = cp; |
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64 while (*cp && !isspace(*cp) && *cp != ',') |
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65 cp++; |
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66 if (*cp) |
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67 *cp++ = '\0'; |
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68 for (n = 0; n < nlsupp; n++) { |
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69 if (!strcasecmp(np, lsupp[n].name)) { |
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70 *lsupp[n].sup_flag = 1; |
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71 break; |
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72 } |
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73 } |
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74 } |
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75 } |
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76 return(0); |
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77 } |