From: Malte Bublitz <malte@rolltreppe3.de>
Date: Sun, 11 Dec 2022 18:43:08 +0000 (+0100)
Subject: Original version
X-Git-Url: https://git.rt3x.de/?a=commitdiff_plain;h=058aa03fe207f79830c9b8511331d4e3f09001bf;p=bbs.git

Original version
---

diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..f5604fe
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,8 @@
+WGET        = wget
+EXCUSES_URL = http://pages.cs.wisc.edu/~ballard/bofh/excuses
+
+all: excuses
+	
+excuses:
+	$(WGET) $(EXCUSES_URL)
+	
diff --git a/bbs_env.py b/bbs_env.py
new file mode 100644
index 0000000..2b6e1fb
--- /dev/null
+++ b/bbs_env.py
@@ -0,0 +1,40 @@
+# -*- coding: utf-8 -*-
+
+import platform
+
+class BBSFakeUserEnv(object):
+    _user = ""
+    _node = ""
+    _name = ""
+    _hideRealUname = False
+    
+    def setUser(self, _user):
+        self._user = _user
+        
+    def getUser(self):
+        return self._user
+        
+    def getNode(self):
+        return self._node
+        
+    def getName(self):
+        return self._name
+        
+    def setHideRealUname(self, _hideRealUname):
+        self._hideRealUname = _hideRealUname
+
+    def getHome(self):
+        return "/usr/home/" + self.getUser()
+        
+    def getUName(self):
+        if not self._hideRealUname:
+            return platform.uname()[0]+" "+platform.uname()[1]+" "+platform.uname()[2]
+        else:
+            return "Linux "+self.getNode()+" 0.13.37-42"
+        
+    def __init__(self):
+        self._user = "doctor_who"
+        self._node = platform.node()
+        #self._node = platform.uname()[1]
+        self._name = "I am the Doctor!"
+        
diff --git a/bofh.py b/bofh.py
new file mode 100644
index 0000000..ef698ea
--- /dev/null
+++ b/bofh.py
@@ -0,0 +1,15 @@
+# -*- coding: utf-8 -*-
+
+from random import randint
+
+def get_excuse():
+    f = open("excuses", "r")
+    excuses = f.read().split("\n")
+    f.close()
+    n = len(excuses)
+    i = randint(0, n-1)
+    return excuses[i]
+    
+if __name__ == "__main__":
+    print(get_excuse())
+    
diff --git a/minishell b/minishell
new file mode 100755
index 0000000..930416b
--- /dev/null
+++ b/minishell
@@ -0,0 +1,127 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+#
+# Minimal Shell
+#    Use whenever a user should be able to launch a shell,
+#    but not to execute commands.
+#
+# Copyright (c) 2013-2015 Malte Bublitz.
+# All rights reserved.
+# 
+# Licensed under the terms of the 2-clause BSD license.
+# See LICENSE for details.
+# 
+
+import platform
+import os
+import sys
+import getpass
+
+os.chdir(os.path.dirname(sys.argv[0]))
+
+import bbs_env
+import bofh
+
+def getuser():
+    return "doctorwho"
+    
+def login(prompt1="login: ", prompt2="Password: "):
+    login_data = ["", ""]
+    while len(login_data[0]) < 2:
+        login_data[0] = input(prompt1)
+
+    login_data[1] = getpass.getpass(prompt2)
+    
+    return login_data
+
+def main():
+    env = bbs_env.BBSFakeUserEnv()
+    commands_allowed = (
+        "",
+        "exit",
+        "logout",
+        "help",
+        "whoami",
+        "id",
+        "hostname",
+        "pwd",
+        "uname",
+        "clear",
+        "sry"
+    )
+    command = ""
+    
+    # Log in
+    env._user = login()[0]
+    env.setHideRealUname(True)
+    
+    print("\nWelcome on "+env.getNode()+", "+env.getUser()+"!\n")
+    
+    try:
+        while command != "exit":
+            print("$ ",end="")
+            try:
+                command = input()
+                
+            except KeyboardInterrupt:
+                print("")
+                continue
+                
+            if command == "logout" or command == "exit":
+                command = "exit"
+                
+            elif command == "help":
+                print("""Minimal Shell Help
+Commands:
+    whoami
+    id
+    hostname
+    pwd
+    uname
+    clear
+    help
+    logout/exit
+""")
+            elif command == "whoami":
+                if not env.getUser() in ["doctor", "doctorwho", "doctor_who"]:
+                    print(env.getUser())
+                else:
+                    #print("I am the Doctor!")
+                    print(env.getName())
+                    print("")
+                    print("I should behave politely, so maybe excuse for")
+                    print("future mistakes with \"sry\" (Yes, an easter egg!)")
+                    print("")
+                
+            elif command == "id":
+                print("uid=42(" + env.getUser() + ") gid=100(users) groups=42(" + env.getUser() + "),9999(telnet)")
+                
+            elif command == "hostname":
+                print(env.getNode())
+                
+            elif command == "pwd":
+                # print("/usr/home/"+getuser())
+                print(env.getHome())
+                
+            elif command == "uname":
+                print(env.getUName())
+                
+            elif command == "clear":
+                ret_code = os.system("clear")
+            
+            elif command == "sry" or command == "bofh":
+                print("<BOFH> "+bofh.get_excuse())
+            
+            #elif not command in commands_allowed:
+            #    print("-minishell: "+command.split(" ")[0]+": Command not found.")
+            elif len(command) > 0:
+                print("-minishell: "+command.split(" ")[0]+": Command not found.")
+            
+    except EOFError:
+        print("<EOF>")
+        
+    print("Good bye.")
+
+if __name__ == "__main__":
+    main()
+