141 lines
3.1 KiB
C
141 lines
3.1 KiB
C
/*
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This file is part of libcapwap.
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libcapwap is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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libcapwap is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Foobar. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @file
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* @brief cw_readelem_ac_descriptor is implemented here.
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*/
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#include "capwap.h"
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#include "acinfo.h"
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#include "bstr.h"
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#include "cw_log.h"
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static int read_subelem_cisco(struct ac_info* acinfo,int subtype,uint8_t * elem, int len)
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{
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switch (subtype) {
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case 0:
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/* hardware version */
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bstr_replace(&acinfo->hardware_version,bstr_create(elem,len));
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break;
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case 1:
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/* software version */
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bstr_replace(&acinfo->software_version,bstr_create(elem,len));
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break;
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default:
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//printf("What? %d\n",subtype);
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break;
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}
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return 1;
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}
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static int read_subelem(struct ac_info* acinfo,int subtype,uint8_t *elem, int len)
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{
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switch (subtype){
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case 4:
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/* hardware version */
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bstr_replace(&acinfo->hardware_version,bstr_create(elem,len));
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break;
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case 5:
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/* software version */
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bstr_replace(&acinfo->software_version,bstr_create(elem,len));
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break;
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}
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return 1;
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}
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/**
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* Read CAPWAP message elment: AC Descriptor
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* @param acinfo pointer to acinfo where the result is stored
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* @param type message element type
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* @param msgelem pointer to message element
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* @param len length of message element
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* @return 1 AC descriptor sucessfull read \n
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* 0 not an ac descriptor message\n
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* -1 an error has occured
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*/
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int cw_readelem_ac_descriptor(struct ac_info * acinfo,int type, uint8_t *msgelem, int len)
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{
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if (type != CAPWAP_ELEM_AC_DESCRIPTOR)
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return 0;
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if (len<12)
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return -1;
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uint32_t val;
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/* read stations and limit */
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val = ntohl(*((uint32_t*)msgelem));
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acinfo->stations = val>>16;
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acinfo->limit = val&0xffff;
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/* read active wtps and max wtps */
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val = ntohl(*((uint32_t*)(msgelem+4)));
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acinfo->active_wtps = val>>16;
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acinfo->max_wtps = val&0xffff;
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/* read active wtps and max wtps */
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val = ntohl(*((uint32_t*)(msgelem+8)));
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acinfo->security = val >>24;
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acinfo->rmac= (val >> 16)&0xff;
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acinfo->dtls_policy=val&0xf;
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int sub=12;
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int sublen;
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while (sub<len){
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if (len-sub<8)
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return -1;
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uint32_t vendor = ntohl(*((uint32_t*)(msgelem+sub)));
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val = ntohl(*((uint32_t*)(msgelem+sub+4)));
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sublen = val&0xffff;
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sub+=8;
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int subtype = val>>16;
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cw_dbg(DBG_ELEM,"AC Descriptor sub-element vendor: %d, type:%d, len: %d",vendor,subtype,sublen);
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switch (vendor) {
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case 0:
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read_subelem(acinfo,subtype,msgelem+sub,sublen);
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break;
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case CW_VENDOR_ID_CISCO:
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read_subelem_cisco(acinfo,subtype,msgelem+sub,sublen);
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break;
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}
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if (sub+sublen>len)
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return -1;
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sub+=sublen;
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}
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return 1;
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}
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