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break things in a new, different way

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This commit is contained in:
Charles Kerr 2007-12-13 01:07:34 +00:00
parent f8eb90d8eb
commit 2742fbb3f4
1 changed files with 68 additions and 72 deletions
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138
third-party/libnatpmp/getgateway.c vendored
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@ -1,66 +1,9 @@
/* $Id: getgateway.c,v 1.4 2007/11/22 18:01:37 nanard Exp $ */
/* libnatpmp
* Copyright (c) 2007, Thomas BERNARD <miniupnp@free.fr>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
#include <stdio.h> #include <stdio.h>
#include <stdlib.h> #include <stdlib.h>
#include <string.h> #include <string.h>
#include <ctype.h> #include <errno.h>
#include <netinet/in.h>
#include <sys/param.h>
#include "getgateway.h"
#ifdef __linux__
int getdefaultgateway(in_addr_t * addr)
{
long d, g;
char buf[256];
int line = 0;
FILE * f;
char * p;
f = fopen("/proc/net/route", "r");
if(!f)
return -1;
while(fgets(buf, sizeof(buf), f)) {
if(line > 0) {
p = buf;
while(*p && !isspace(*p))
p++;
while(*p && isspace(*p))
p++;
if(sscanf(p, "%lx%lx", &d, &g)==2) {
if(d == 0) { /* default */
*addr = g;
fclose(f);
return 0;
}
}
}
line++;
}
/* not found ! */
if(f)
fclose(f);
return -1;
}
#endif
#if defined(BSD) || defined(__APPLE__) #if defined(BSD) || defined(__APPLE__)
#include <errno.h>
#include <stdlib.h>
#include <sys/types.h> #include <sys/types.h>
#include <sys/socket.h> #include <sys/socket.h>
#include <netinet/in.h> #include <netinet/in.h>
@ -69,6 +12,30 @@ int getdefaultgateway(in_addr_t * addr)
#include <sys/sysctl.h> #include <sys/sysctl.h>
#include <net/route.h> #include <net/route.h>
static uint8_t *
getroute( int * buflen );
static int
parseroutes( uint8_t * buf, int len, struct in_addr * addr );
int
getdefaultgateway( struct in_addr * addr )
{
uint8_t * buf;
int len;
buf = getroute( &len );
if( NULL == buf )
{
fprintf(stderr, "failed to get default route (BSD)" );
return 1;
}
len = parseroutes( buf, len, addr );
free( buf );
return len;
}
#ifndef SA_SIZE #ifndef SA_SIZE
#define ROUNDUP( a, size ) \ #define ROUNDUP( a, size ) \
( ( (a) & ( (size) - 1 ) ) ? ( 1 + ( (a) | ( (size) - 1 ) ) ) : (a) ) ( ( (a) & ( (size) - 1 ) ) ? ( 1 + ( (a) | ( (size) - 1 ) ) ) : (a) )
@ -183,23 +150,52 @@ parseroutes( uint8_t * buf, int len, struct in_addr * addr )
return 1; return 1;
} }
int #elif defined( linux ) || defined( __linux ) || defined( __linux__ )
getdefaultgateway( struct in_addr * addr )
#include <stdio.h>
#include <ctype.h>
#include <netinet/in.h>
#include <sys/param.h>
int getdefaultgateway(in_addr_t * addr)
{ {
uint8_t * buf; long d, g;
int len; char buf[256];
int line = 0;
buf = getroute( &len ); FILE * f;
if( NULL == buf ) char * p;
{ f = fopen("/proc/net/route", "r");
fprintf(stderr, "failed to get default route (BSD)" ); if(!f)
return 1; return -1;
while(fgets(buf, sizeof(buf), f)) {
if(line > 0) {
p = buf;
while(*p && !isspace(*p))
p++;
while(*p && isspace(*p))
p++;
if(sscanf(p, "%lx%lx", &d, &g)==2) {
if(d == 0) { /* default */
*addr = g;
fclose(f);
return 0;
} }
}
}
line++;
}
/* not found ! */
if(f)
fclose(f);
return -1;
}
len = parseroutes( buf, len, addr ); #else /* not BSD or Linux */
free( buf );
return len; int getdefaultgateway( struct in_addr * addr )
{
printf( "don't know how to get default route on this platform" );
return 1;
} }
#endif #endif