actube/src/cw/bstrv_create_from_str.c

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/*
This file is part of actube.
actube 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 3 of the License, or
(at your option) any later version.
libcapwap 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 Foobar. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @file
*/
#include "bstr.h"
#include "format.h"
/**
* Create a bstrv variable from string.
* @param vendor_id Vendor ID
* @param s string
* @return the created bstrv variable or NULL if the
* operation was not sucessfull
*/
uint8_t * bstrv_create_from_str(uint32_t vendor_id,const char *s)
{
int l = strlen(s);
if (s[0]!='.')
return bstrv_create(vendor_id,(uint8_t*)s,l);
if (l<=2)
return bstrv_create(vendor_id,(uint8_t*)s,l);
if (s[1]=='.')
return bstrv_create(vendor_id,(uint8_t*)s+1,l-1);
if (s[1]!='x')
return bstrv_create(vendor_id,(uint8_t*)s,l);
/* the string starts with ".x" - read hexbytes */
l-=2;
int msize=l/2;
if(l&1)
msize++;
uint8_t * mem = malloc(bstrv_size(msize));
if(!mem)
return NULL;
bstrv_set_vendor_id(mem,vendor_id);
bstrv_set_len(mem,msize);
cw_format_scan_hex_bytes(bstrv_data(mem),s+2,l);
return mem;
}