From: Alexander A. Klimov <grandmaster@al2klimov.de>
Date: Thu, 3 Oct 2019 15:02:58 +0000 (+0200)
Subject: Introduce Utility::RealPath()
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=a102c9e883e940e3e85dd3b73bc0157dbe74421d;p=icinga2

Introduce Utility::RealPath()
---

diff --git a/lib/base/utility.cpp b/lib/base/utility.cpp
index 1add7616c..da0224226 100644
--- a/lib/base/utility.cpp
+++ b/lib/base/utility.cpp
@@ -1901,3 +1901,27 @@ bool Utility::ComparePasswords(const String& enteredPassword, const String& actu
 
 	return result;
 }
+
+String Utility::RealPath(const String& path)
+{
+	namespace fs = boost::filesystem;
+
+	fs::path current (path.Begin(), path.End());
+
+	for (int i = 0; i < 40; ++i) {
+		boost::system::error_code ec;
+		auto next (fs::read_symlink(current, ec));
+
+		if (ec) {
+			break;
+		}
+
+		if (!next.is_absolute()) {
+			next = current.parent_path() / next;
+		}
+
+		current = next;
+	}
+
+	return current.c_str();
+}
diff --git a/lib/base/utility.hpp b/lib/base/utility.hpp
index 4505dc918..3cf63f564 100644
--- a/lib/base/utility.hpp
+++ b/lib/base/utility.hpp
@@ -144,6 +144,8 @@ public:
 	static void IncrementTime(double);
 #endif /* I2_DEBUG */
 
+	static String RealPath(const String& path);
+
 private:
 	Utility();