Revision: 1532
http://svn.sourceforge.net/complement/?rev=1532&view=rev
Author: complement
Date: 2007-02-21 09:57:04 -0800 (Wed, 21 Feb 2007)
Log Message:
-----------
more funcs
Modified Paths:
--------------
trunk/complement/explore/inquiry/shades/juniper/str_interposer.c
Modified: trunk/complement/explore/inquiry/shades/juniper/str_interposer.c
===================================================================
--- trunk/complement/explore/inquiry/shades/juniper/str_interposer.c 2007-02-21 13:03:16 UTC (rev 1531)
+++ trunk/complement/explore/inquiry/shades/juniper/str_interposer.c 2007-02-21 17:57:04 UTC (rev 1532)
@@ -2,18 +2,19 @@
*
*/
-/* Example of a library interposer: interpose on
- * malloc().
- * Build and use this interposer as following:
- * cc -o malloc_interposer.so -G -Kpic malloc_interposer.c
- * setenv LD_PRELOAD $cwd/malloc_interposer.so
+/* library interposer: interpose on
+ * str...().
+ * export LD_PRELOAD=$cwd/libtest.so.0.0
* run the app
- * unsetenv LD_PRELOAD
+ * unset LD_PRELOAD
*/
#include <stdio.h>
#include <dlfcn.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+
#if 0
void *malloc(size_t size)
{
@@ -30,7 +31,7 @@
{
static void * (*func)();
- if(!func)
+ if (!func)
func = (void *(*)()) dlsym(RTLD_NEXT, "strcpy");
printf( "strcpy: '%s'\n", s2 );
@@ -42,7 +43,7 @@
{
static void * (*func)();
- if(!func)
+ if (!func)
func = (void *(*)()) dlsym(RTLD_NEXT, "strdup");
printf( "strdup: '%s'\n", s1 );
@@ -55,7 +56,7 @@
static void * (*func)();
char *r;
- if(!func)
+ if (!func)
func = (void *(*)()) dlsym(RTLD_NEXT, "strncat");
r = func( s1, s2, n );
@@ -68,7 +69,7 @@
{
static void * (*func)();
- if(!func)
+ if (!func)
func = (void *(*)()) dlsym(RTLD_NEXT, "strtok");
printf( "strtok: '%s'\n", s1 );
@@ -76,3 +77,50 @@
return func( s1, s2 );
}
+ssize_t sendto(int socket, const void *message, size_t length, int flags, const struct sockaddr *dest_addr, socklen_t dest_len)
+{
+ static ssize_t (*func)();
+ int i;
+
+ if (!func)
+ func = (ssize_t (*)()) dlsym(RTLD_NEXT, "sendto");
+
+ printf( "sendto: (%d) '", length );
+ for ( i = 0; i < length; ++i ) {
+ printf( "%c", (const char *)message + i );
+ }
+ printf( "'\n" );
+ return func( socket, message, length, flags, dest_addr, dest_len );
+}
+
+ssize_t recvfrom(int socket, void *buffer, size_t length, int flags, struct sockaddr *address, socklen_t *address_len)
+{
+ static ssize_t (*func)();
+ int i;
+ ssize_t s;
+
+ if (!func)
+ func = (ssize_t (*)()) dlsym(RTLD_NEXT, "recvfrom");
+
+ s = func( socket, buffer, length, flags, address, address_len );
+ printf( "recvfrom: (%d) '", length );
+ for ( i = 0; i < length; ++i ) {
+ printf( "%c", (const char *)buffer + i );
+ }
+ printf( "'\n" );
+ return s;
+}
+
+int connect(int socket, const struct sockaddr *address, socklen_t address_len)
+{
+ static int (*func)();
+
+ if (!func)
+ func = (int (*)()) dlsym(RTLD_NEXT, "connect");
+
+ printf( "connect: " );
+ printf( "%x", *(((unsigned *)&((struct sockaddr_in *)address)->sin_addr)) );
+ printf( ":%d\n", ntohs(((struct sockaddr_in *)address)->sin_port) );
+
+ return func( socket, address, address_len );
+}
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