From d760e844bb03dbcba07cc88c6f12217f8aa8450a Mon Sep 17 00:00:00 2001
From: Louis Merlin <louis@srlabs.de>
Date: Mon, 20 Nov 2023 14:19:17 +0100
Subject: [PATCH] Add first version of cmplog testing

---
 Cargo.lock                  |  7 +++++++
 Cargo.toml                  |  1 +
 examples/cmplog/.gitignore  |  2 ++
 examples/cmplog/Cargo.toml  |  8 ++++++++
 examples/cmplog/README.md   | 13 +++++++++++++
 examples/cmplog/src/main.rs | 38 +++++++++++++++++++++++++++++++++++++
 6 files changed, 69 insertions(+)
 create mode 100644 examples/cmplog/.gitignore
 create mode 100644 examples/cmplog/Cargo.toml
 create mode 100644 examples/cmplog/README.md
 create mode 100644 examples/cmplog/src/main.rs

diff --git a/Cargo.lock b/Cargo.lock
index b08b3a6..2182d43 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -178,6 +178,13 @@ version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cd7cc57abe963c6d3b9d8be5b06ba7c8957a930305ca90304f24ef040aa6f961"
 
+[[package]]
+name = "cmplog-fuzz"
+version = "0.1.0"
+dependencies = [
+ "ziggy",
+]
+
 [[package]]
 name = "colorchoice"
 version = "1.0.0"
diff --git a/Cargo.toml b/Cargo.toml
index db9a443..06c3962 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -10,6 +10,7 @@ repository = "https://github.com/srlabs/ziggy/"
 members = [
     ".",
     "examples/arbitrary",
+    "examples/cmplog",
     "examples/url",
 ]
 
diff --git a/examples/cmplog/.gitignore b/examples/cmplog/.gitignore
new file mode 100644
index 0000000..3dd5509
--- /dev/null
+++ b/examples/cmplog/.gitignore
@@ -0,0 +1,2 @@
+output
+Cargo.lock
\ No newline at end of file
diff --git a/examples/cmplog/Cargo.toml b/examples/cmplog/Cargo.toml
new file mode 100644
index 0000000..02630d6
--- /dev/null
+++ b/examples/cmplog/Cargo.toml
@@ -0,0 +1,8 @@
+[package]
+name = "cmplog-fuzz"
+version = "0.1.0"
+edition = "2021"
+publish = false
+
+[dependencies]
+ziggy = { path = "../../", default-features = false }
diff --git a/examples/cmplog/README.md b/examples/cmplog/README.md
new file mode 100644
index 0000000..9362e9c
--- /dev/null
+++ b/examples/cmplog/README.md
@@ -0,0 +1,13 @@
+# Ziggy example - CMPLOG
+
+First, install the tooling:
+
+```
+cargo install cargo-afl honggfuzz ziggy
+```
+
+Then, in this directory, run:
+
+```
+cargo ziggy fuzz
+```
diff --git a/examples/cmplog/src/main.rs b/examples/cmplog/src/main.rs
new file mode 100644
index 0000000..690d7ef
--- /dev/null
+++ b/examples/cmplog/src/main.rs
@@ -0,0 +1,38 @@
+fn main() {
+    // This fuzz harness demonstrates the capabilities of CmpLog.
+    // Simply run the fuzzer and it should find the crash immediately.
+    ziggy::fuzz!(|data: &[u8]| {
+        if data.len() < 29 {
+            return;
+        }
+        if data[0] != b'A' {
+            return;
+        }
+        if data[1] != b'B' {
+            return;
+        }
+        if data[2] != b'C' {
+            return;
+        }
+        if data[3] != b'D' {
+            return;
+        }
+
+        if data[4..8] != 0x6969_4141_i32.to_le_bytes() {
+            return;
+        };
+
+        if data[8..12] != *b"1234" || data[12..16] != *b"EFGH" {
+            return;
+        };
+
+        let slice = &data[16..];
+        let match_string = "Hello, world!";
+        let compare_string = String::from_utf8(slice.to_vec()).unwrap_or_default();
+        if compare_string != match_string {
+            return;
+        }
+
+        panic!("BOOM");
+    });
+}
\ No newline at end of file