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Simplify transparent + add support for BSD PF/IPF

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This commit is contained in:
z3APA3A 2017-10-17 17:07:35 +03:00
parent 105522b24e
commit b99fa7aaa4
5 changed files with 33 additions and 27 deletions
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2
Makefile.FreeBSD
View File

@ -31,7 +31,7 @@ REMOVECOMMAND = rm -f
TYPECOMMAND = cat
COMPATLIBS =
MAKEFILE = Makefile.unix
PLUGINS = StringsPlugin TrafficPlugin PCREPlugin PamAuth
PLUGINS = StringsPlugin TrafficPlugin PCREPlugin PamAuth TransparentPlugin
include Makefile.inc

2
Makefile.Linux
View File

@ -10,7 +10,7 @@
BUILDDIR =
CC = gcc
CFLAGS = -g -O2 -c -pthread -DWITHSPLICE -DGETHOSTBYNAME_R -D_THREAD_SAFE -D_REENTRANT -DNOODBC -DWITH_STD_MALLOC -DFD_SETSIZE=4096 -DWITH_POLL
CFLAGS = -g -O2 -c -pthread -DWITHSPLICE -DGETHOSTBYNAME_R -D_THREAD_SAFE -D_REENTRANT -DNOODBC -DWITH_STD_MALLOC -DFD_SETSIZE=4096 -DWITH_POLL -DWITH_NETFILTER
COUT = -o
LN = gcc
DCFLAGS = -fpic

2
Makefile.Solaris
View File

@ -28,7 +28,7 @@ REMOVECOMMAND = rm -f
TYPECOMMAND = cat
COMPATLIBS =
MAKEFILE = Makefile.Solaris
PLUGINS = StringsPlugin TrafficPlugin PCREPlugin
PLUGINS = StringsPlugin TrafficPlugin PCREPlugin TransparentPlugin
include Makefile.inc

2
Makefile.unix
View File

@ -32,7 +32,7 @@ REMOVECOMMAND = rm -f
TYPECOMMAND = cat
COMPATLIBS =
MAKEFILE = Makefile.unix
PLUGINS = StringsPlugin TrafficPlugin PCREPlugin PamAuth
PLUGINS = StringsPlugin TrafficPlugin PCREPlugin PamAuth TransparentPlugin
include Makefile.inc

52
src/plugins/TransparentPlugin/transparent_plugin.c
View File

@ -6,14 +6,18 @@
*/
#ifdef WITH_NETFILTER
#include <sys/utsname.h>
#endif
#include "../../structures.h"
#include "../../proxy.h"
#ifdef WITH_NETFILTER
#include <sys/types.h>
#include <sys/socket.h>
#include <limits.h>
#include <linux/netfilter_ipv4.h>
#endif
#ifdef __cplusplus
extern "C" {
@ -38,35 +42,37 @@ static void* transparent_filter_open(void * idata, struct srvparam * param){
static FILTER_ACTION transparent_filter_client(void *fo, struct clientparam * param, void** fc){
#ifdef SO_ORIGINAL_DST
struct sockaddr_in addr;
socklen_t len;
unsigned u;
unsigned short p;
char addrbuf[24];
char addrbuf[60];
int i=0;
len = sizeof(addr);
if(getsockopt(param->clisock, SOL_IP, SO_ORIGINAL_DST,(struct sockaddr *) &addr, &len) || !addr.sin_addr.s_addr){
return PASS;
}
u = ntohl(addr.sin_addr.s_addr);
p = ntohs(addr.sin_port);
sprintf(addrbuf, "%u.%u.%u.%u:%hu",
((u&0xFF000000)>>24),
((u&0x00FF0000)>>16),
((u&0x0000FF00)>>8),
((u&0x000000FF)),
p);
len = sizeof(param->req);
pl->parsehostname(addrbuf, param, 0);
#ifdef WITH_NETFILTER
#ifdef SO_ORIGINAL_DST
if(getsockopt(param->clisock, SOL_IP, SO_ORIGINAL_DST,(struct sockaddr *) &param->req, &len)){
return PASS;
}
#else
#error No SO_ORIGINAL_DST defined
param->srv->logfunc(param, (unsigned char *)"transparent_plugin: No SO_ORIGINAL_DST defined");
return REJECT;
param->srv->logfunc(param, (unsigned char *)"transparent_plugin: No SO_ORIGINAL_DST defined");
return REJECT;
#endif
#else
if(!memcmp(&param->req, &param->sincl,sizeof(param->req))){
param->req = param->sincl;
param->sincl = param->srv->intsa;
}
#endif
addrbuf[i++] = '[';
i += pl->myinet_ntop(*SAFAMILY(&param->req), SAADDR(&param->req), (char *)addrbuf + i, sizeof(addrbuf));
sprintf((char *)addrbuf+i, "]:%hu", ntohs(*SAPORT(&param->req)));
#ifdef mystrdup
#undef mystrdup
#undef myfree
#endif
if(param->hostname) pl->myfree(param->hostname);
param->hostname = pl->mystrdup(addrbuf);
return PASS;
}