[complement-svn] SF.net SVN: complement: [1651] trunk/complement/explore/inquiry/shades

[<com...@us...>]

Revision: 1651
          http://complement.svn.sourceforge.net/complement/?rev=1651&view=rev
Author:   complement
Date:     2007-07-27 04:51:31 -0700 (Fri, 27 Jul 2007)

Log Message:
-----------
juniper removed, str_interposer.c preserved in ldpreload

Added Paths:
-----------
    trunk/complement/explore/inquiry/shades/ldpreload/str_interposer.c

Removed Paths:
-------------
    trunk/complement/explore/inquiry/shades/juniper/

Added: trunk/complement/explore/inquiry/shades/ldpreload/str_interposer.c
===================================================================
--- trunk/complement/explore/inquiry/shades/ldpreload/str_interposer.c	                        (rev 0)
+++ trunk/complement/explore/inquiry/shades/ldpreload/str_interposer.c	2007-07-27 11:51:31 UTC (rev 1651)
@@ -0,0 +1,126 @@
+/* Example from: http://developers.sun.com/solaris/articles/lib_interposers_code.html
+ *
+ */
+
+/* library interposer: interpose on
+ * str...().
+ * export LD_PRELOAD=$cwd/libtest.so.0.0
+ * run the app
+ * unset LD_PRELOAD
+ */
+
+#include <stdio.h>
+#include <dlfcn.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+
+
+#if 0
+void *malloc(size_t size)
+{
+  static void * (*func)();
+
+  if(!func)
+    func = (void *(*)()) dlsym(RTLD_NEXT, "malloc");
+  printf("malloc(%d) is called\n", size);     
+  return(func(size));
+}
+#endif
+
+char *strcpy( char *s1, const char *s2 )
+{
+  static void * (*func)();
+
+  if (!func)
+    func = (void *(*)()) dlsym(RTLD_NEXT, "strcpy");
+
+  printf( "strcpy: '%s'\n", s2 );
+
+  return func( s1, s2 );
+}
+
+char *strdup(const char *s1)
+{
+  static void * (*func)();
+
+  if (!func)
+    func = (void *(*)()) dlsym(RTLD_NEXT, "strdup");
+
+  printf( "strdup: '%s'\n", s1 );
+
+  return func( s1 );
+}
+
+char *strncat(char *s1, const char *s2, size_t n)
+{
+  static void * (*func)();
+  char *r;
+
+  if (!func)
+    func = (void *(*)()) dlsym(RTLD_NEXT, "strncat");
+
+  r = func( s1, s2, n );
+  printf( "strncat: '%s'\n", r );
+
+  return r;
+}
+
+char *strtok(char *s1, const char *s2)
+{
+  static void * (*func)();
+
+  if (!func)
+    func = (void *(*)()) dlsym(RTLD_NEXT, "strtok");
+
+  printf( "strtok: '%s'\n", s1 );
+
+  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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