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let the past begone in cvs land. welcome to igit igit!

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PSYC 2009-01-26 20:21:29 +01:00
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world/net/sip/common.c Normal file
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// $Id: common.c,v 1.2 2005/03/14 10:23:27 lynx Exp $ // vim:syntax=lpc
#include <net.h>
#include "sip.h"
mapping SIP_PHRASES;
mapping specialCases;
load() {
specialCases = ([ "Cseq" : "CSeq",
"Call-Id" : "Call-ID",
"Www-Authenticate" : "WWW-Authenticate",
]);
SIP_PHRASES = ([
//
100: "Trying",
180: "Ringing",
181: "Call Is Being Forwarded",
182: "Queued",
183: "Session Progress",
//
200: "OK",
//
300: "Multiple Choices",
301: "Moved Permanently",
302: "Moved Temporarily",
303: "See Other",
305: "Use Proxy",
380: "Alternative Service",
//
400: "Bad Request",
401: "Unauthorized",
402: "Payment Required",
403: "Forbidden",
404: "Not Found",
405: "Method Not Allowed",
406: "Not Acceptable",
407: "Proxy Authentication Required",
408: "Request Timeout",
409: "Conflict",
410: "Gone",
411: "Length Required",
413: "Request Entity Too Large",
414: "Request-URI Too Large",
415: "Unsupported Media Type",
416: "Unsupported URI Scheme",
420: "Bad Extension",
421: "Extension Required",
423: "Interval Too Brief",
480: "Temporarily Unavailable",
481: "Call/Transaction Does Not Exist",
482: "Loop Detected",
483: "Too Many Hops",
484: "Address Incomplete",
485: "Ambiguous",
486: "Busy Here",
487: "Request Terminated",
488: "Not Acceptable Here",
491: "Request Pending",
493: "Undecipherable",
//
500: "Internal Server Error",
501: "Not Implemented",
502: "Bad Gateway",
503: "Service Unavailable",
504: "Server Time-out",
505: "SIP Version not supported",
513: "Message Too Large",
//
600: "Busy Everywhere",
603: "Decline",
604: "Does not exist anywhere",
606: "Not Acceptable"
]);
}
encodevar(varname) {
int i;
i = index(varname, '-');
if(i != -1)
varname = upper_case(varname[0..0]) + varname[1..i] +
upper_case(varname[i+1..i+1]) + varname[i+2..];
else varname = capitalize(varname);
return specialCases[varname] || varname;
}
serialize(varnames, vars, data) {
string varname;
mixed value;
string t;
t = "";
foreach(varname : varnames) {
value = vars[varname];
varname = encodevar(varname);
if (pointerp(value)) {
string v;
foreach (v : value) t += varname + ": " + v + CRLF;
}
else if (stringp(value)) t += varname + ": " + value + CRLF;
}
if (data && stringp(data)) {
if (strlen(data)) t += "Content-Type: " + vars["content-type"] + CRLF;
t += "Content-Length: " + strlen(data) + CRLF CRLF;
// TODO: how to end packet?
t += data;
}
return t;
}
string makeResponse(string prot, int code, mapping v, mixed data) {
string reply;
reply = prot + " " + code + " " + SIP_PHRASES[code] + CRLF +
serialize(({ "from", "to", "via", "call-id", "cseq",
"www-authenticate" }), v);
if (data && stringp(data)) {
if (v["content-type"])
reply += "Content-Type: " + v["content-type"] + CRLF;
reply += "Content-Length: " + strlen(data);
reply += data + CRLF CRLF;
}
return reply;
}
parseHeaders(string headers) {
string line;
mapping v;
v = ([ ]);
foreach(line : explode(headers, CRLF)) {
string key, val;
unless(sscanf(line, "%s:%t%s", key, val) == 2) {
P3(("SIP parse: strange line %O\n", line))
// TODO 400 bad request?
continue;
}
key = lower_case(key);
val = chomp(val);
if (pointerp(v[ key ]) ) v[ key ] += ({ val });
else if (v[ key ]) v[ key ] = ({ v[ key ], val });
else v[ key ] = chomp(val);
}
return v;
}