Initial checkin.

1 files changed, 38 insertions, 0 deletions

diff --git a/authbind.c b/authbind.c
new file mode 100644
index 0000000..6d957ae
--- /dev/null
+++ b/authbind.c
@@ -0,0 +1,38 @@
+/**/
+
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <unistd.h>
+
+#define LD_PRELOAD "LD_PRELOAD"
+#define AUTHBINDLIB "AUTHBIND_LIB"
+#define LIBAUTHBIND "/usr/lib/authbind/libauthbind.so.0"
+
+int main(int argc, char *const *argv) {
+  const char *expreload, *authbindlib, *preload;
+  char *newpreload;
+
+  authbindlib= getenv(AUTHBINDLIB);
+  if (!authbindlib) {
+    if (setenv(AUTHBINDLIB,LIBAUTHBIND,0)) {
+      perror("authbind: setenv " AUTHBINDLIB);
+      exit(-1);
+    }
+    authbindlib= LIBAUTHBIND;
+  }
+    
+  if ((expreload= getenv(LD_PRELOAD))) {
+    newpreload= malloc(strlen(expreload)+strlen(authbindlib)+2);
+    strcpy(newpreload,expreload);
+    strcat(newpreload,":");
+    strcat(newpreload,authbindlib);
+    preload= newpreload;
+  } else {
+    preload= authbindlib;
+  }
+  if (setenv(LD_PRELOAD,preload,1)) { perror("authbind: setenv"); exit(-1); }
+
+  execvp(argv[1],argv+1);
+  perror(argv[1]); exit(-1);
+}