/*
 * $Id$
 *
 */

#include <stdio.h>
#include "error.h"
#include "str.h"
#include "parser/msg_parser.h"
#include "mem/mem.h"

/* current function's error; */
int ser_error=-1;
/* previous error */
int prev_ser_error=-1;

int err2reason_phrase( 
	int ser_error,  /* current itnernal ser error */
	int *sip_error,  /* the sip error code to which ser 	
					    ser error will be turned */
	char *phrase,    /* resulting error text */
	int etl, 		/* error text buffer length */
	char *signature ) /* extra text to be appended */
{

	char *error_txt;

	switch( ser_error ) {
		case E_OUT_OF_MEM:
			error_txt="Excuse me I ran out of memory";
			*sip_error=500;
			break;
		case E_SEND:
			error_txt="Unfortunately error on sending to next hop occured";
			*sip_error=-ser_error;
			break;
		case E_BAD_ADDRESS:
			error_txt="Unresolveable destination";
			*sip_error=-ser_error;
			break;
		case E_BAD_REQ:
			error_txt="Bad Request";
			*sip_error=-ser_error;
			break;
		case E_BAD_URI:
			error_txt="Regretfuly, we were not able to process the URI";
			*sip_error=-ser_error;
			break;
		case E_BAD_TUPEL:
			error_txt="Transaction tupel incomplete";
			*sip_error=-E_BAD_REQ;
			break;
		case E_BAD_TO:
			error_txt="Bad To";
			*sip_error=-E_BAD_REQ;
			break;
		case E_EXEC:
			error_txt="Error in external logic";
			*sip_error=-E_BAD_SERVER;
			break;
		case E_TOO_MANY_BRANCHES:
			error_txt="Forking capacity exceeded";
			*sip_error=-E_BAD_SERVER;
			break;
		default:
			error_txt="I'm terribly sorry, server error occured";
			*sip_error=500;
			break;
	}
	return snprintf( phrase, etl, "%s (%d/%s)", error_txt, 
		-ser_error, signature );
}

char *error_text( int code )
{
	switch(code) {

		case 100: return "Trying";
		case 180: return "Ringing";
		case 181: return "Call is Being Forwarded";
		case 182: return "Queued";
		case 183: return "Session Progress";

		case 200: return "OK";

		case 300: return "Multiple Choices";
		case 301: return "Moved Permanently";
		case 302: return "Moved Temporarily";
		case 305: return "Use Proxy";
		case 380: return "Alternative Service";

		case 400: return "Bad Request";
		case 401: return "Unauthorized";
		case 402: return "Payement Required";
		case 403: return "Forbidden";
		case 404: return "Not Found";
		case 405: return "Method not Allowed";
		case 406: return "Not Acceptable";
		case 407: return "Proxy authentication Required";
		case 408: return "Request Timeout";
		case 410: return "Gone";
		case 413: return "Request Entity Too Large";
		case 414: return "Request-URI Too Long";
		case 415: return "Unsupported Media Type";
		case 416: return "Unsupported URI Scheme";
		case 417: return "Bad Extension";
		case 421: return "Extension Required";
		case 423: return "Interval Too Brief";
		case 480: return "Temporarily Unavailable";
		case 481: return "Call/Transaction Does not Exist";
		case 482: return "Loop Detected";
		case 483: return "Too Many Hops";
		case 484: return "Address Incomplete";
		case 485: return "Ambigous";
		case 486: return "Busy Here";
		case 487: return "Request Terminated";
		case 488: return "Not Acceptable Here";
		case 491: return "Request Pending";
	
		case 500: return "Server Internal Error";
		case 501: return "Not Implemented";
		case 502: return "Bad Gateway";
		case 503: return "Service Unavailable";
		case 504: return "Server Time-out";
		case 505: return "Version not Supported";
		case 513: return "Message Too Large";

		case 600: return "Busy Everywhere";
		case 603: return "Decline";
		case 604: return "Does not Exist Anywhere";
		case 606: return "Not Acceptable";

	}

	if (code>=600) return "Global Failure";
	else if (code>=500) return "Server Failure";
	else if (code>=400) return "Request Failure";
	else if (code>=300) return "Redirection";
	else if (code>=200) return "Successful";
	else if (code>=100) return "Provisional";
	else return "Unspecified";
}

void get_reply_status( str *status, struct sip_msg *reply, int code )
{
	str phrase;

	status->s=0;

	if (reply==0) {
		LOG(L_CRIT, "BUG: get_reply_status called with 0 msg\n");
		return;
	}

	if (reply==FAKED_REPLY) {
		phrase.s=error_text(code);
		phrase.len=strlen(phrase.s);
	} else {
		phrase=reply->first_line.u.reply.reason;
	}
	status->len=phrase.len+3/*code*/+1/*space*/+1/*ZT*/;
	status->s=pkg_malloc(status->len);
	if (!status->s) {
		LOG(L_ERR, "ERROR: get_reply_status: no mem\n");
		return;
	}
	status->s[3]=' ';
	status->s[2]='0'+code % 10; code=code/10;
	status->s[1]='0'+code% 10; code=code/10;
	status->s[0]='0'+code % 10;
	memcpy(&status->s[4], phrase.s, phrase.len);
	status->s[status->len-1]=0;
}