1 files changed, 46 insertions, 0 deletions

diff --git a/detect/various.c b/detect/various.c
new file mode 100644
index 0000000..3689a8a
--- /dev/null
+++ b/detect/various.c
@@ -0,0 +1,46 @@
+/*
+ * Detection of various tricks
+ *
+ */
+
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+
+/*
+ * Dead simple try to detect the LD_PRELOAD trick by looking
+ * into environnement variables of the program.
+ */
+int various_ldpreload(){
+    return (getenv("LD_PRELOAD") != NULL);
+}
+
+/*
+ * Try to detect the LD_PRELOAD trick when used with a custom
+ * gentenv() function. Feel free to expand it using the same principe.
+ */
+int various_ldpreload_custom_getenv(){
+    if(!various_ldpreload()){
+        putenv("LD_PRELOAD=hello");
+        return (strcmp(getenv("LD_PRELOAD"), "hello"));
+    }
+    return 1;
+}
+
+/*
+ * Timiming attack, useful for detecting breakpoints
+ */
+int various_rdtsc(){
+    clock_t t = clock();
+
+    int i; //Time-consuming crap
+    for(i=2; i<7137001; i++)
+        if (7137001 % i == 0)
+            break;
+
+    return (clock() - t > 0xffff); //adjust this
+}
+