SL-10153: Review and rationalize fetching paths from environment.

Use LLStringUtil::getenv() or getoptenv() whenever we fetch a string that will
be used as a pathname.

Use LLFile::tmpdir() instead of getenv("TEMP").

As an added extra-special bonus, finally clean up $TMP/llcontrol-test-zzzzzz
directories that have been accumulating every time we run a local build!

1 files changed, 15 insertions, 18 deletions

diff --git a/indra/llvfs/lldir_linux.cpp b/indra/llvfs/lldir_linux.cpp
index 2cd06b81f8..80ad05345a 100644
--- a/indra/llvfs/lldir_linux.cpp
+++ b/indra/llvfs/lldir_linux.cpp
@@ -29,6 +29,7 @@
 #include "lldir_linux.h"
 #include "llerror.h"
 #include "llrand.h"
+#include "llstring.h"
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <unistd.h>
@@ -40,28 +41,24 @@ static std::string getCurrentUserHome(char* fallback)
 {
 	const uid_t uid = getuid();
 	struct passwd *pw;
-	char *result_cstr = fallback;
-	
+
 	pw = getpwuid(uid);
 	if ((pw != NULL) && (pw->pw_dir != NULL))
 	{
-		result_cstr = (char*) pw->pw_dir;
+		return pw->pw_dir;
+	}
+
+	LL_INFOS() << "Couldn't detect home directory from passwd - trying $HOME" << LL_ENDL;
+	auto home_env = LLStringUtil::getoptenv("HOME");
+	if (home_env)
+	{
+		return *home_env;
 	}
 	else
 	{
-		LL_INFOS() << "Couldn't detect home directory from passwd - trying $HOME" << LL_ENDL;
-		const char *const home_env = getenv("HOME");	/* Flawfinder: ignore */ 
-		if (home_env)
-		{
-			result_cstr = (char*) home_env;
-		}
-		else
-		{
-			LL_WARNS() << "Couldn't detect home directory!  Falling back to " << fallback << LL_ENDL;
-		}
+		LL_WARNS() << "Couldn't detect home directory!  Falling back to " << fallback << LL_ENDL;
+		return fallback;
 	}
-	
-	return std::string(result_cstr);
 }
 
 
@@ -156,18 +153,18 @@ void LLDir_Linux::initAppDirs(const std::string &app_name,
 	if (!app_read_only_data_dir.empty())
 	{
 		mAppRODataDir = app_read_only_data_dir;
-		mSkinBaseDir = mAppRODataDir + mDirDelimiter + "skins";
+		mSkinBaseDir = add(mAppRODataDir, "skins");
 	}
 	mAppName = app_name;
 
 	std::string upper_app_name(app_name);
 	LLStringUtil::toUpper(upper_app_name);
 
-	char* app_home_env = getenv((upper_app_name + "_USER_DIR").c_str());	/* Flawfinder: ignore */ 
+	auto app_home_env(LLStringUtil::getoptenv(upper_app_name + "_USER_DIR"));
 	if (app_home_env)
 	{
 		// user has specified own userappdir i.e. $SECONDLIFE_USER_DIR
-		mOSUserAppDir = app_home_env;
+		mOSUserAppDir = *app_home_env;
 	}
 	else
 	{