Added functions to convert strings into uids/gids/modes.

[stg.git] / stglibs / common.lib / common.cpp

diff --git a/stglibs/common.lib/common.cpp b/stglibs/common.lib/common.cpp
index 22ec354b002442eab12f55b8868ddee7254669e8..90493e9f83783c3ed926ee32f479c64ed134517d 100644 (file)
--- 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;
+}