From 0142fb19905808101878148ca188161f016eba5e Mon Sep 17 00:00:00 2001
From: spacehen <root@spacehen.io>
Date: Fri, 30 Dec 2022 12:05:55 +0200
Subject: CDL: Compact Detour Library

Initial commit for the CDL x86_64 detour library.
---
 tests/Makefile     | 16 ++++++++++++++++
 tests/basic_jmp.c  | 52 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 tests/basic_swbp.c | 52 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 120 insertions(+)
 create mode 100644 tests/Makefile
 create mode 100644 tests/basic_jmp.c
 create mode 100644 tests/basic_swbp.c

(limited to 'tests')

diff --git a/tests/Makefile b/tests/Makefile
new file mode 100644
index 0000000..d28b133
--- /dev/null
+++ b/tests/Makefile
@@ -0,0 +1,16 @@
+IDIR=../
+CC=gcc
+CFLAGS=-I$(IDIR)
+CFILES_CDL=../cdl.c
+
+all: basic_jmp basic_swbp
+
+basic_jmp: basic_jmp.c
+	$(CC) $(CFLAGS) basic_jmp.c $(CFILES_CDL) -o basic_jmp
+basic_swbp: basic_swbp.c
+	$(CC) $(CFLAGS) basic_swbp.c $(CFILES_CDL) -o basic_swbp
+
+.PHONY: clean
+clean:
+	rm -f basic_jmp
+	rm -f basic_swbp
diff --git a/tests/basic_jmp.c b/tests/basic_jmp.c
new file mode 100644
index 0000000..e8aa85a
--- /dev/null
+++ b/tests/basic_jmp.c
@@ -0,0 +1,52 @@
+#include "cdl.h"
+
+typedef int add_t(
+    __in int x,
+    __in int y
+);
+
+add_t* addo = NULL;
+
+int add(
+    __in int x,
+    __in int y
+)
+{
+    printf("Inside original function\n");
+    return x + y;
+}
+
+int add_detour(
+    __in int x,
+    __in int y
+)
+{
+    printf("Inside detour function\n");
+    return addo(5,5);
+}
+
+int main(
+    __in void
+)
+{
+    struct cdl_jmp_patch jmp_patch = {};
+    addo = (add_t*)add;
+
+    printf("Before attach: \n");
+    printf("add(1,1) = %i\n\n", add(1,1));
+
+    jmp_patch = cdl_jmp_attach((void**)&addo, add_detour);
+    if(jmp_patch.active)
+    {
+        printf("After attach: \n");
+        printf("add(1,1) = %i\n\n", add(1,1));
+        printf("== DEBUG INFO ==\n");
+        cdl_jmp_dbg(&jmp_patch);
+    }
+
+    cdl_jmp_detach(&jmp_patch);
+    printf("\nAfter detach: \n");
+    printf("add(1,1) = %i\n\n", add(1,1));
+
+    return 0;
+}
diff --git a/tests/basic_swbp.c b/tests/basic_swbp.c
new file mode 100644
index 0000000..684f71d
--- /dev/null
+++ b/tests/basic_swbp.c
@@ -0,0 +1,52 @@
+#include "cdl.h"
+
+typedef int add_t(
+    __in int x,
+    __in int y
+);
+
+add_t* addo = NULL;
+
+int add(
+    __in int x,
+    __in int y
+)
+{
+    printf("Inside original function\n");
+    return x + y;
+}
+
+int add_detour(
+    __in int x,
+    __in int y
+)
+{
+    printf("Inside detour function\n");
+    return addo(5,5);
+}
+
+int main(
+    __in void
+)
+{
+    struct cdl_swbp_patch swbp_patch = {};
+    addo = (add_t*)add;
+
+    printf("Before attach: \n");
+    printf("add(1,1) = %i\n\n", add(1,1));
+
+    swbp_patch = cdl_swbp_attach((void**)&addo, add_detour);
+    if(swbp_patch.active)
+    {
+        printf("After attach: \n");
+        printf("add(1,1) = %i\n\n", add(1,1));
+        printf("== DEBUG INFO ==\n");
+        cdl_swbp_dbg(&swbp_patch);
+    }
+
+    cdl_swbp_detach(&swbp_patch);
+    printf("\nAfter detach: \n");
+    printf("add(1,1) = %i\n\n", add(1,1));
+
+    return 0;
+}
\ No newline at end of file
-- 
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