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Hack to deal with cisco messed wtp descriptors.

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FossilOrigin-Name: a7917b7e37caeef0708004d17d2b151d8d66386cd9d9b48b96496b0bb9ffd05b
This commit is contained in:
user@SRH-Linux-01.(none) 2014-07-30 06:51:21 +00:00
parent 9a745234cb
commit abf4c3a7a1
1 changed files with 19 additions and 3 deletions
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22
src/capwap/wtpinfo_readelem_wtp_descriptor.c
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@ -23,7 +23,10 @@
#include "cw_util.h"
#include "cw_log.h"
int wtpinfo_readelem_wtp_descriptor(struct wtpinfo * wtpinfo, int type, uint8_t *msgelem, int len)
static int wtpinfo_readelem_wtp_descriptor_(struct wtpinfo * wtpinfo, int type, uint8_t *msgelem, int len, int cq)
{
if (type != CWMSGELEM_WTP_DESCRIPTOR)
return 0;
@ -36,10 +39,13 @@ int wtpinfo_readelem_wtp_descriptor(struct wtpinfo * wtpinfo, int type, uint8_t
int ncrypt = *(msgelem+2);
int i;
if (ncrypt == 0){
if (ncrypt == 0 ){
/* non-conform */
cw_log_debug1("Non-standard-conform WTP descriptor detected (See RFC 5415)");
i=4;
if (!cq)
i=3;
else
i=4;
}
else{
i=ncrypt*3+3;
@ -90,4 +96,14 @@ int wtpinfo_readelem_wtp_descriptor(struct wtpinfo * wtpinfo, int type, uint8_t
return 1;
}
int wtpinfo_readelem_wtp_descriptor(struct wtpinfo * wtpinfo, int type, uint8_t *msgelem, int len)
{
int rc =wtpinfo_readelem_wtp_descriptor_(wtpinfo, type, msgelem, len,0);
if (rc==-1){
cw_log_debug2("Bad wtp descriptor, trying cisco hack");
rc =wtpinfo_readelem_wtp_descriptor_(wtpinfo, type, msgelem, len,1);
}
return rc;
}