--- a/ie-docker.c	Mon Jul 14 22:46:28 2014 -1000
+++ b/ie-docker.c	Tue Sep 02 06:32:15 2014 -1000
@@ -30,6 +30,24 @@
 
 static char bad_name[] = "Bad process name. Try students_e11_e115711_01 or teachers_kono_02\n";
 
+const char *guests[] = {"mata"};
+const char *managers[] = {"taiki"};
+const char students_sym[] = "students";
+const char managers_sym[] = "managers";
+const char guests_sym[] = "guests";
+const char delimiter[] = "_";
+
+enum { 
+    NAME_LENGTH = 50,
+    VM_NAME_LENGTH = 50
+};
+
+enum { 
+    STUDENTS,
+    GUESTS,
+    MANAGERS
+};
+
 #define PSNAME_MAX (512)
 
 typedef struct pslist {
@@ -93,6 +111,82 @@
     return 0;
 }
 
+int
+check_user_name(const char *account_name)
+{
+    const char *regex = "[ek]([0-9{6})";
+
+    regex_t *pattern = NEW(regex_t);
+    int ret = -1;
+
+    if (regcomp(pattern, regex, REG_EXTENDED|REG_NEWLINE) != 0) {
+        exit(0);
+    }
+
+    if (!ret) {
+        return STUDENTS;
+    }
+
+    ret = regexec(pattern, account_name, (size_t) 0, NULL, 0);
+    regfree(pattern);
+
+    const int managers_num = sizeof(managers) / sizeof(managers[0]);
+    int i = 0;
+
+    for (; i< managers_num; i++) {
+        if (strncmp(account_name, managers[i], NAME_LENGTH) == 0) {
+            return MANAGERS;
+        }
+    }
+
+    const int guests_num = sizeof(guests) / sizeof(guests[0]);
+    int j = 0;
+
+    for (; j< guests_num; j++) {
+        if (strncmp(account_name, guests[j], NAME_LENGTH) == 0) {
+            return GUESTS;
+        }
+    }
+
+    return -1;
+}
+
+void
+bind_name(char *name, const char *first,  const char *second)
+{
+    strncat(name, first, VM_NAME_LENGTH);
+    strncat(name, delimiter, VM_NAME_LENGTH);
+    strncat(name, second, VM_NAME_LENGTH);
+    strncat(name, delimiter, VM_NAME_LENGTH);
+    return;
+}
+
+void
+make_vm_name(char *vm_name, const int account_type, const char *account_name, const char *vm_num)
+{
+    switch(account_type) {
+        case STUDENTS:
+            strncat(vm_name, students_sym, VM_NAME_LENGTH);
+            strncat(vm_name, delimiter, VM_NAME_LENGTH);
+            strncat(vm_name, account_name, 3);
+            strncat(vm_name, delimiter, VM_NAME_LENGTH);
+            strncat(vm_name, account_name, VM_NAME_LENGTH);
+            strncat(vm_name, delimiter, VM_NAME_LENGTH);
+            break;
+        case GUESTS:
+            bind_name(vm_name, guests_sym, account_name);
+            break;
+        case MANAGERS:
+            bind_name(vm_name, managers_sym, account_name);
+            break;
+        default :
+            fprintf(stderr, "Error: no registered type name.");
+            return;
+    }
+
+    strncat(vm_name, vm_num, VM_NAME_LENGTH);
+}
+
 void 
 usage()
 {
@@ -101,7 +195,6 @@
     printf("\tbuild:  build docker process from Dockerfile\n");
     printf("\tattach: atach process\n");
     printf("\tdettach: \n");
-    printf("\tpull: \n");
     printf("\timages: \n");
     printf("\tcommit:\n");
     printf("\tps-name should be students_e11_e115711_01 or teachers_kono_02\n");
@@ -130,11 +223,12 @@
     setegid(getgid());
     seteuid(getuid());
 
-    regex_t *pattern = NEW(regex_t);
-    if (regcomp(pattern, name, 0) != 0) {
-        exit(0);
+    int account_type = check_user_name(name);
+    if (account_type < 0) {
+        fprintf(stderr, "Permission denied. :%s\n", name);
     }
 
+
     /* Confirm user is in GROUP(999) group */
 
     /*
@@ -146,11 +240,22 @@
 
     /* Set uid, gid, euid and egid to root */
 
+    regex_t *pattern = NEW(regex_t);
+    if (regcomp(pattern, name, 0) != 0) {
+        exit(0);
+    }
+
     setegid(0);
     seteuid(0);
     setgid(0);
     setuid(0);
 
+    char *vm_name = (char *)malloc(sizeof(char) * VM_NAME_LENGTH);
+    vm_name[0] = '\0';
+    if (strncmp(argv[1], "list", 4) != 0) {
+        make_vm_name(vm_name, account_type, name, argv[2]);
+    }
+
     if (argc >= 3) {
         if (strncmp(argv[1], run_command, 6) == 0 ) {
             if (strncmp(argv[3], "--name", 6) != 0) {
@@ -167,16 +272,6 @@
                 fprintf(stderr, bad_name);
                 exit(0);
             }
-
-            /*           
-            char exec[1024];
-
-            strncpy(exec,"/usr/local/bin/newps.py -c /etc/libvirt/qemu/fedora19.xml -n ", 900);
-
-            strncat(exec, argv[2],1000);
-            fprintf(stdout, "excuting %s\n",exec );
-            system(exec);
-            */
         }
     }