From ba979553b6c71b733d294ca7b3f461c9080e7f72 Mon Sep 17 00:00:00 2001
From: Maxim Mamontov <faust.madf@gmail.com>
Date: Tue, 22 Sep 2015 22:50:38 +0300
Subject: [PATCH] Added functions to convert strings into uids/gids/modes.

---
 stglibs/common.lib/common.cpp           | 37 ++++++++++++++++++++++++-
 stglibs/common.lib/include/stg/common.h | 17 +++++++-----
 2 files changed, 46 insertions(+), 8 deletions(-)

diff --git a/stglibs/common.lib/common.cpp b/stglibs/common.lib/common.cpp
index 22ec354b..90493e9f 100644
--- a/stglibs/common.lib/common.cpp
+++ b/stglibs/common.lib/common.cpp
@@ -32,7 +32,8 @@
 // Like FreeBSD4
 #include <sys/types.h>
 #include <sys/time.h>
-#include <unistd.h>
+#include <pwd.h>
+#include <grp.h>
 
 #include <sys/select.h>
 
@@ -1074,3 +1075,37 @@ std::string ToPrintable(const std::string & src)
 
     return dest;
 }
+
+uid_t str2uid(const std::string& name)
+{
+    const passwd* res = getpwnam(name.c_str());
+    if (res == NULL)
+        return -1;
+    return res->pw_uid;
+}
+
+gid_t str2gid(const std::string& name)
+{
+    const group* res = getgrnam(name.c_str());
+    if (res == NULL)
+        return -1;
+    return res->gr_gid;
+}
+
+mode_t str2mode(const std::string& name)
+{
+    if (name.length() < 3 || name.length() > 4)
+        return -1;
+
+    if (name.length() == 4 && name[0] != '0')
+        return -1;
+
+    mode_t res = 0;
+    for (size_t i = 0; i < name.length(); ++i)
+    {
+        if (name[i] > '7' || name[i] < '0')
+            return -1;
+        res = (res << 3) + (name[i] - '0');
+    }
+    return res;
+}
diff --git a/stglibs/common.lib/include/stg/common.h b/stglibs/common.lib/include/stg/common.h
index f46c922a..e90ad75a 100644
--- a/stglibs/common.lib/include/stg/common.h
+++ b/stglibs/common.lib/include/stg/common.h
@@ -27,16 +27,15 @@
 #ifndef common_h
 #define common_h
 
-#ifdef __BORLANDC__
-#include <time.h>
-#else
-#include <ctime>
-#endif
+#include "stg/os_int.h"
+#include "stg/const.h"
+
 #include <string>
 #include <sstream>
+#include <ctime>
 
-#include "stg/os_int.h"
-#include "stg/const.h"
+#include <unistd.h> // uid_t, gid_t
+#include <sys/stat.h> // mode_t
 
 #define STAT_TIME_3         (1)
 #define STAT_TIME_2         (2)
@@ -299,4 +298,8 @@ const std::string & unsigned2str(varT x, std::string & s)
 char * stg_strptime(const char *, const char *, struct tm *);
 time_t stg_timegm(struct tm *);
 
+uid_t str2uid(const std::string& name);
+gid_t str2gid(const std::string& name);
+mode_t str2mode(const std::string& mode);
+
 #endif
-- 
2.43.2