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/* $Id$ */
/*
* Copyright (C) 2003-2007 Benny Prijono <benny@prijono.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <pjnath/errno.h>
#include <pjnath/stun_msg.h>
#include <pj/string.h>
/* PJNATH's own error codes/messages
* MUST KEEP THIS ARRAY SORTED!!
* Message must be limited to 64 chars!
*/
#if defined(PJ_HAS_ERROR_STRING) && PJ_HAS_ERROR_STRING!=0
static const struct
{
int code;
const char *msg;
} err_str[] =
{
/* STUN related error codes */
PJ_BUILD_ERR( PJNATH_EINSTUNMSGLEN, "Invalid STUN message length"),
PJ_BUILD_ERR( PJNATH_EINSTUNMSGTYPE, "Invalid or unexpected STUN message type"),
PJ_BUILD_ERR( PJNATH_ESTUNTIMEDOUT, "STUN transaction has timed out"),
PJ_BUILD_ERR( PJNATH_ESTUNTOOMANYATTR, "Too many STUN attributes"),
PJ_BUILD_ERR( PJNATH_ESTUNINATTRLEN, "Invalid STUN attribute length"),
PJ_BUILD_ERR( PJNATH_ESTUNDUPATTR, "Found duplicate STUN attribute"),
PJ_BUILD_ERR( PJNATH_ESTUNFINGERPRINT, "STUN FINGERPRINT verification failed"),
PJ_BUILD_ERR( PJNATH_ESTUNMSGINTPOS, "Invalid STUN attribute after MESSAGE-INTEGRITY"),
PJ_BUILD_ERR( PJNATH_ESTUNFINGERPOS, "Invalid STUN attribute after FINGERPRINT"),
PJ_BUILD_ERR( PJNATH_ESTUNNOMAPPEDADDR, "STUN (XOR-)MAPPED-ADDRESS attribute not found"),
PJ_BUILD_ERR( PJNATH_ESTUNIPV6NOTSUPP, "STUN IPv6 attribute not supported"),
/* ICE related errors */
PJ_BUILD_ERR( PJNATH_ENOICE, "ICE session not available"),
PJ_BUILD_ERR( PJNATH_EICEINPROGRESS, "ICE check is in progress"),
PJ_BUILD_ERR( PJNATH_EICEFAILED, "All ICE checklists failed"),
PJ_BUILD_ERR( PJNATH_EICEINCOMPID, "Invalid ICE component ID"),
PJ_BUILD_ERR( PJNATH_EICEINCANDID, "Invalid ICE candidate ID"),
PJ_BUILD_ERR( PJNATH_EICEMISSINGSDP, "Missing ICE SDP attribute"),
PJ_BUILD_ERR( PJNATH_EICEINCANDSDP, "Invalid SDP \"candidate\" attribute"),
};
#endif /* PJ_HAS_ERROR_STRING */
/*
* pjnath_strerror()
*/
static pj_str_t pjnath_strerror(pj_status_t statcode,
char *buf, pj_size_t bufsize )
{
pj_str_t errstr;
#if defined(PJ_HAS_ERROR_STRING) && (PJ_HAS_ERROR_STRING != 0)
if (statcode >= PJNATH_ERRNO_START &&
statcode < PJNATH_ERRNO_START + PJ_ERRNO_SPACE_SIZE)
{
/* Find the error in the table.
* Use binary search!
*/
int first = 0;
int n = PJ_ARRAY_SIZE(err_str);
while (n > 0) {
int half = n/2;
int mid = first + half;
if (err_str[mid].code < statcode) {
first = mid+1;
n -= (half+1);
} else if (err_str[mid].code > statcode) {
n = half;
} else {
first = mid;
break;
}
}
if (PJ_ARRAY_SIZE(err_str) && err_str[first].code == statcode) {
pj_str_t msg;
msg.ptr = (char*)err_str[first].msg;
msg.slen = pj_ansi_strlen(err_str[first].msg);
errstr.ptr = buf;
pj_strncpy_with_null(&errstr, &msg, bufsize);
return errstr;
}
}
#endif /* PJ_HAS_ERROR_STRING */
/* Error not found. */
errstr.ptr = buf;
errstr.slen = pj_ansi_snprintf(buf, bufsize,
"Unknown pjnath error %d",
statcode);
if (errstr.slen < 0) errstr.slen = 0;
else if (errstr.slen > (int)bufsize) errstr.slen = bufsize;
return errstr;
}
static pj_str_t pjnath_strerror2(pj_status_t statcode,
char *buf, pj_size_t bufsize )
{
int stun_code = statcode - PJ_STATUS_FROM_STUN_CODE(0);
const pj_str_t cmsg = pj_stun_get_err_reason(stun_code);
pj_str_t errstr;
if (cmsg.slen == 0) {
/* Not found */
errstr.ptr = buf;
errstr.slen = pj_ansi_snprintf(buf, bufsize,
"Unknown STUN err-code %d",
stun_code);
} else {
errstr.ptr = buf;
pj_strncpy(&errstr, &cmsg, bufsize);
}
if (errstr.slen < 0) errstr.slen = 0;
else if (errstr.slen > (int)bufsize) errstr.slen = bufsize;
return errstr;
}
PJ_DEF(pj_status_t) pjnath_init(void)
{
pj_status_t status;
status = pj_register_strerror(PJNATH_ERRNO_START, 299,
&pjnath_strerror);
if (status != PJ_SUCCESS)
return status;
status = pj_register_strerror(PJ_STATUS_FROM_STUN_CODE(300),
699 - 300,
&pjnath_strerror2);
return status;
}
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