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/* $Id: portlistingparse.c,v 1.6 2012/05/29 10:26:51 nanard Exp $ */
/* MiniUPnP project
* http://miniupnp.free.fr/ or http://miniupnp.tuxfamily.org/
* (c) 2011 Thomas Bernard
* This software is subject to the conditions detailed
* in the LICENCE file provided within the distribution */
#include <string.h>
#include <stdlib.h>
#include "portlistingparse.h"
#include "minixml.h"
/* list of the elements */
static const struct {
const portMappingElt code;
const char * const str;
} elements[] = {
{ PortMappingEntry, "PortMappingEntry"},
{ NewRemoteHost, "NewRemoteHost"},
{ NewExternalPort, "NewExternalPort"},
{ NewProtocol, "NewProtocol"},
{ NewInternalPort, "NewInternalPort"},
{ NewInternalClient, "NewInternalClient"},
{ NewEnabled, "NewEnabled"},
{ NewDescription, "NewDescription"},
{ NewLeaseTime, "NewLeaseTime"},
{ PortMappingEltNone, NULL}
};
/* Helper function */
static UNSIGNED_INTEGER
atoui(const char * p, int l)
{
UNSIGNED_INTEGER r = 0;
while(l > 0 && *p)
{
if(*p >= '0' && *p <= '9')
r = r*10 + (*p - '0');
else
break;
p++;
l--;
}
return r;
}
/* Start element handler */
static void
startelt(void * d, const char * name, int l)
{
int i;
struct PortMappingParserData * pdata = (struct PortMappingParserData *)d;
pdata->curelt = PortMappingEltNone;
for(i = 0; elements[i].str; i++)
{
if(memcmp(name, elements[i].str, l) == 0)
{
pdata->curelt = elements[i].code;
break;
}
}
if(pdata->curelt == PortMappingEntry)
{
struct PortMapping * pm;
pm = calloc(1, sizeof(struct PortMapping));
LIST_INSERT_HEAD( &(pdata->head), pm, entries);
}
}
/* End element handler */
static void
endelt(void * d, const char * name, int l)
{
struct PortMappingParserData * pdata = (struct PortMappingParserData *)d;
(void)name;
(void)l;
pdata->curelt = PortMappingEltNone;
}
/* Data handler */
static void
data(void * d, const char * data, int l)
{
struct PortMapping * pm;
struct PortMappingParserData * pdata = (struct PortMappingParserData *)d;
pm = pdata->head.lh_first;
if(!pm)
return;
if(l > 63)
l = 63;
switch(pdata->curelt)
{
case NewRemoteHost:
memcpy(pm->remoteHost, data, l);
pm->remoteHost[l] = '\0';
break;
case NewExternalPort:
pm->externalPort = (unsigned short)atoui(data, l);
break;
case NewProtocol:
if(l > 3)
l = 3;
memcpy(pm->protocol, data, l);
pm->protocol[l] = '\0';
break;
case NewInternalPort:
pm->internalPort = (unsigned short)atoui(data, l);
break;
case NewInternalClient:
memcpy(pm->internalClient, data, l);
pm->internalClient[l] = '\0';
break;
case NewEnabled:
pm->enabled = (unsigned char)atoui(data, l);
break;
case NewDescription:
memcpy(pm->description, data, l);
pm->description[l] = '\0';
break;
case NewLeaseTime:
pm->leaseTime = atoui(data, l);
break;
default:
break;
}
}
/* Parse the PortMappingList XML document for IGD version 2
*/
void
ParsePortListing(const char * buffer, int bufsize,
struct PortMappingParserData * pdata)
{
struct xmlparser parser;
memset(pdata, 0, sizeof(struct PortMappingParserData));
LIST_INIT(&(pdata->head));
/* init xmlparser */
parser.xmlstart = buffer;
parser.xmlsize = bufsize;
parser.data = pdata;
parser.starteltfunc = startelt;
parser.endeltfunc = endelt;
parser.datafunc = data;
parser.attfunc = 0;
parsexml(&parser);
}
void
FreePortListing(struct PortMappingParserData * pdata)
{
struct PortMapping * pm;
while((pm = pdata->head.lh_first) != NULL)
{
LIST_REMOVE(pm, entries);
free(pm);
}
}
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