63 lines
1.3 KiB
C
63 lines
1.3 KiB
C
#include "capwap.h"
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#include "wtpinfo.h"
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#include "cw_util.h"
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int wtpinfo_readelem_wtp_descriptor(struct wtpinfo * wtpinfo, int type, uint8_t *msgelem, int len)
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{
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if (type != CWMSGELEM_WTP_DESCRIPTOR)
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return 0;
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if (len<6)
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return -1;
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wtpinfo->max_radios=*msgelem;
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wtpinfo->radios_in_use=*(msgelem+1);
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int ncrypt = *(msgelem+2);
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int i=ncrypt*3+3;
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do {
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if (i+8>=len)
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return -1;
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uint32_t vendor_id=ntohl(*((uint32_t*)(msgelem+i)));
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uint32_t val = ntohl(*((uint32_t*)(msgelem+i+4)));
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int subtype= (val>>16)&0xffff;
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int sublen = val&0xffff;
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i+=8;
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if (sublen+i>len){
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//printf("Wrong sublen ba %d\n",sublen);
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return -1;
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}
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switch(subtype){
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case CWMSGSUBELEM_WTP_DESCRIPTOR_HARDWARE_VERSION:
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wtpinfo->hardware_vendor_id=vendor_id;
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cw_setstr(&wtpinfo->hardware_version,msgelem+i,sublen);
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break;
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case CWMSGSUBELEM_WTP_DESCRIPTOR_SOFTWARE_VERSION:
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wtpinfo->software_vendor_id=vendor_id;
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cw_setstr(&wtpinfo->software_version,msgelem+i,sublen);
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break;
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case CWMSGSUBELEM_WTP_DESCRIPTOR_BOOTLOADER_VERSION:
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wtpinfo->bootloader_vendor_id=vendor_id;
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cw_setstr(&wtpinfo->bootloader_version,msgelem+i,sublen);
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break;
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default:
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//printf("unknown !!!\n");
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break;
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}
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i+=sublen;
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}while(i<len);
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return 1;
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}
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