From 9a096660614ad5870b185742f46ad2ad4aa92c34 Mon Sep 17 00:00:00 2001
From: unknowntrojan <14975032+unknowntrojan@users.noreply.github.com>
Date: Wed, 20 Sep 2023 10:49:06 +0200
Subject: bugfixes

---
 Cargo.toml |  2 +-
 src/lib.rs | 30 ++++++++++++++++++++++++------
 2 files changed, 25 insertions(+), 7 deletions(-)

diff --git a/Cargo.toml b/Cargo.toml
index de4f4de..3645304 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "binja_coolsigmaker"
-version = "0.1.4"
+version = "0.1.5"
 authors = ["unknowntrojan"]
 edition = "2021"
 
diff --git a/src/lib.rs b/src/lib.rs
index 671e11a..dde3a18 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -74,10 +74,8 @@ struct SigFinderCommand;
 
 #[derive(thiserror::Error, Debug)]
 enum SignatureError {
-    #[error("pattern is not unique even at maxmimum size of {0} bytes")]
+    #[error("pattern is not unique even at size of {0} bytes! we either hit the limit or would have broken a function boundary.")]
     NotUnique(u64),
-    #[error("pattern is not unique yet, but continuing would cross a function boundary")]
-    OutOfBounds,
     #[error("encountered an invalid instruction")]
     InvalidInstruction,
     #[error("unable to query instruction's segment")]
@@ -588,10 +586,14 @@ fn create_pattern_internal_binarysearch(
             }
         });
 
-    let instr = instr_offsets[unique_instr];
+    let instr = instr_offsets[unique_instr.clamp(0, instr_offsets.len() - 1)];
 
     current_pattern.drain(instr.0 as usize + instr.1..);
 
+    while let Some(x) = current_pattern.last() && x.is_none() {
+		current_pattern.pop();
+	}
+
     log::info!(
         "binsearch created pattern in {}ms",
         SystemTime::now().duration_since(time).unwrap().as_millis()
@@ -743,12 +745,28 @@ fn create_pattern(bv: &BinaryView, addr: u64) -> Result<OwnedPattern, SignatureE
         create_pattern_internal(bv, addr, &data, include_operands)
     };
 
-    if !include_operands && matches!(pattern, Err(SignatureError::NotUnique(_))) {
+    let pattern = if !include_operands && matches!(pattern, Err(SignatureError::NotUnique(_))) {
         log::warn!("unable to find a unique pattern that didn't include operands. trying again with operands!");
-        create_pattern_internal(bv, addr, &data, true)
+        if get_binary_search(bv) {
+            create_pattern_internal_binarysearch(bv, addr, &data, true)
+        } else {
+            create_pattern_internal(bv, addr, &data, true)
+        }
     } else {
         pattern
+    };
+
+    if pattern
+        .as_ref()
+        .is_ok_and(|pat| !is_pattern_unique(&data, &pat))
+    {
+        log::error!("signature not unique, cannot proceed!");
+        return Err(SignatureError::NotUnique(
+            pattern.map_or(0u64, |pat| pat.len() as u64),
+        ));
     }
+
+    pattern
 }
 
 fn emit_result(contents: String) {
-- 
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