From 12bcf2228f4668a058b39939779c9590494c3b4a Mon Sep 17 00:00:00 2001
From: liberize <liberize@gmail.com>
Date: Mon, 9 Dec 2024 21:28:28 +0800
Subject: [PATCH] optimize

---
 src/untraceable.h | 7 +++----
 src/utils.h       | 6 +++++-
 2 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/src/untraceable.h b/src/untraceable.h
index d6e9921..da41706 100644
--- a/src/untraceable.h
+++ b/src/untraceable.h
@@ -56,11 +56,10 @@ FORCE_INLINE void check_debugger(bool full, bool parent) {
     snprintf(path, sizeof(path), OBF("/proc/%d/status"), parent ? getppid() : getpid());
     std::ifstream ifs(path);
     std::string line, needle = OBF("TracerPid:\t");
-    int tracer_pid = 0;
+    pid_t tracer_pid = 0;
     while (std::getline(ifs, line)) {
-        auto idx = line.find(needle);
-        if (idx != std::string::npos) {
-            tracer_pid = atoi(line.c_str() + idx + needle.size());
+        if (str_starts_with(line, needle)) {
+            tracer_pid = atoi(line.c_str() + needle.size());
             break;
         }
     }
diff --git a/src/utils.h b/src/utils.h
index 912610c..25db55a 100644
--- a/src/utils.h
+++ b/src/utils.h
@@ -66,6 +66,10 @@ FORCE_INLINE std::string base_name(const std::string& s) {
     return s.substr(s.find_last_of("\\/") + 1);
 }
 
+FORCE_INLINE bool str_starts_with(const std::string& s, const std::string& e) {
+    return s.size() >= e.size() && s.compare(0, e.size(), e) == 0;
+}
+
 FORCE_INLINE bool str_ends_with(const std::string& s, const std::string& e) {
     return s.size() >= e.size() && s.compare(s.size() - e.size(), e.size(), e) == 0;
 }
@@ -180,7 +184,7 @@ FORCE_INLINE void check_pipe_reader(int fd) {
         if (entry->d_type != DT_DIR)
             continue;
         char *end = nullptr;
-        auto pid = strtoul(entry->d_name, &end, 10);
+        auto pid = strtol(entry->d_name, &end, 10);
         if (!pid || *end)
             continue;
         if (pid == mypid || pid == ppid)