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173 lines
3.7 KiB
C
173 lines
3.7 KiB
C
/* $Id: portlistingparse.c,v 1.9 2015/07/15 12:41:13 nanard Exp $ */
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/* MiniUPnP project
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* http://miniupnp.free.fr/ or http://miniupnp.tuxfamily.org/
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* (c) 2011-2016 Thomas Bernard
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* This software is subject to the conditions detailed
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* in the LICENCE file provided within the distribution */
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#include <string.h>
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#include <stdlib.h>
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#ifdef DEBUG
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#include <stdio.h>
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#endif /* DEBUG */
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#include "portlistingparse.h"
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#include "minixml.h"
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/* list of the elements */
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static const struct {
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const portMappingElt code;
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const char * const str;
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} elements[] = {
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{ PortMappingEntry, "PortMappingEntry"},
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{ NewRemoteHost, "NewRemoteHost"},
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{ NewExternalPort, "NewExternalPort"},
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{ NewProtocol, "NewProtocol"},
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{ NewInternalPort, "NewInternalPort"},
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{ NewInternalClient, "NewInternalClient"},
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{ NewEnabled, "NewEnabled"},
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{ NewDescription, "NewDescription"},
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{ NewLeaseTime, "NewLeaseTime"},
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{ PortMappingEltNone, NULL}
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};
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/* Helper function */
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static UNSIGNED_INTEGER
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atoui(const char * p, int l)
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{
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UNSIGNED_INTEGER r = 0;
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while(l > 0 && *p)
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{
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if(*p >= '0' && *p <= '9')
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r = r*10 + (*p - '0');
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else
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break;
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p++;
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l--;
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}
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return r;
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}
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/* Start element handler */
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static void
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startelt(void * d, const char * name, int l)
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{
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int i;
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struct PortMappingParserData * pdata = (struct PortMappingParserData *)d;
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pdata->curelt = PortMappingEltNone;
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for(i = 0; elements[i].str; i++)
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{
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if(strlen(elements[i].str) == (size_t)l && memcmp(name, elements[i].str, l) == 0)
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{
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pdata->curelt = elements[i].code;
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break;
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}
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}
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if(pdata->curelt == PortMappingEntry)
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{
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struct PortMapping * pm;
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pm = calloc(1, sizeof(struct PortMapping));
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if(pm == NULL)
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{
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/* malloc error */
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#ifdef DEBUG
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fprintf(stderr, "%s: error allocating memory",
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"startelt");
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#endif /* DEBUG */
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return;
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}
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pm->l_next = pdata->l_head; /* insert in list */
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pdata->l_head = pm;
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}
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}
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/* End element handler */
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static void
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endelt(void * d, const char * name, int l)
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{
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struct PortMappingParserData * pdata = (struct PortMappingParserData *)d;
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(void)name;
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(void)l;
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pdata->curelt = PortMappingEltNone;
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}
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/* Data handler */
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static void
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data(void * d, const char * data, int l)
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{
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struct PortMapping * pm;
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struct PortMappingParserData * pdata = (struct PortMappingParserData *)d;
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pm = pdata->l_head;
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if(!pm)
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return;
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if(l > 63)
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l = 63;
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switch(pdata->curelt)
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{
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case NewRemoteHost:
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memcpy(pm->remoteHost, data, l);
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pm->remoteHost[l] = '\0';
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break;
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case NewExternalPort:
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pm->externalPort = (unsigned short)atoui(data, l);
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break;
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case NewProtocol:
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if(l > 3)
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l = 3;
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memcpy(pm->protocol, data, l);
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pm->protocol[l] = '\0';
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break;
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case NewInternalPort:
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pm->internalPort = (unsigned short)atoui(data, l);
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break;
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case NewInternalClient:
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memcpy(pm->internalClient, data, l);
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pm->internalClient[l] = '\0';
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break;
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case NewEnabled:
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pm->enabled = (unsigned char)atoui(data, l);
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break;
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case NewDescription:
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memcpy(pm->description, data, l);
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pm->description[l] = '\0';
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break;
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case NewLeaseTime:
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pm->leaseTime = atoui(data, l);
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break;
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default:
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break;
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}
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}
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/* Parse the PortMappingList XML document for IGD version 2
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*/
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void
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ParsePortListing(const char * buffer, int bufsize,
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struct PortMappingParserData * pdata)
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{
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struct xmlparser parser;
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memset(pdata, 0, sizeof(struct PortMappingParserData));
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/* init xmlparser */
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parser.xmlstart = buffer;
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parser.xmlsize = bufsize;
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parser.data = pdata;
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parser.starteltfunc = startelt;
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parser.endeltfunc = endelt;
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parser.datafunc = data;
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parser.attfunc = 0;
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parsexml(&parser);
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}
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void
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FreePortListing(struct PortMappingParserData * pdata)
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{
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struct PortMapping * pm;
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while((pm = pdata->l_head) != NULL)
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{
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/* remove from list */
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pdata->l_head = pm->l_next;
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free(pm);
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}
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}
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