random names for temporary files in test class

pythonrewrite/bin2/CryptoBox.py

@@ -9,7 +9,10 @@ progress. So things might be confusing here. Hopefully not for long.
 
 import CryptoBoxLogger
 import CryptoBoxContainer
-import configobj			# to read and write the config file
+try:
+	import configobj			# to read and write the config file
+except:
+	print "Could not load configobj module! Try apt-get install python-configobj."
 import re
 import os
 import sys
@@ -250,10 +253,12 @@ class CryptoBoxProps:
 # *************** test class *********************
 
 class CryptoBoxPropsTest(unittest.TestCase):
-
-	configFile = "/tmp/cbox-test.conf"
-	nameDBFile = "/tmp/cryptobox_names.db"
-	logFile	   = "/tmp/cryptobox.log"
+	import filehandling
+	
+	configFile =  filehandling.gen_temp_file("cbox-test.conf")
+	nameDBFile = filehandling.gen_temp_file("cryptobox_names.db")
+	logFile	   = filehandling.gen_temp_file("cryptobox.log")
+	tmpdir	= filehandling.gen_temp_dir("cryptobox-mnt")
 	configContent = """
 [Main]
 AllowedDevices  = /dev/loop
@@ -272,14 +277,12 @@ Destination     = /tmp/cryptobox.log
 """
 	
 	def setUp(self):
-		if not os.path.exists("/tmp/mnt"): os.mkdir("/tmp/mnt")
-		fd = open(self.configFile, "w")
-		fd.write(self.configContent)
-		fd.close()
-	
+		if not os.path.exists(tmpdir): os.mkdir(tmpdir)
+		filehandling.write_file(self.configFile,self.configContent)
+
 
 	def tearDown(self):
-		if os.path.exists("/tmp/mnt"): os.rmdir("/tmp/mnt")
+		if os.path.exists(tmpdir): os.rmdir(tmpdir)
 		if os.path.exists(self.configFile): os.remove(self.configFile)
 		if os.path.exists(self.logFile): os.remove(self.logFile)
 		if os.path.exists(self.nameDBFile): os.remove(self.nameDBFile)

pythonrewrite/bin2/filehandling.py

@@ -0,0 +1,68 @@
+import os,tempfile,dircache,string,commands
+"""I suppose this stuff should be inside some class?"""
+
+def read_file(filename):
+	"""
+	read from the file whose name is given
+	@param filename String : name of file to read from
+	@return String: content of given file or None
+	"""
+	try:
+		f = open(filename,"r")
+		filecontent = f.read()
+		f.close()
+	except:
+		#TODO:if debug >=1:
+		print "(EE)[%s]: \"%s\" is not readable!"%(__name__, filename)
+		return ""
+	return filecontent
+
+
+
+
+def is_dir_readable(path):
+	""" 
+	Gets the name of a directory.
+	returns True if dir is readable, else False.
+	"""
+	return os.access(path,os.R_OK)
+	
+
+
+def write_file(filename,content):
+	"""
+	Write content to the given filename.
+	gets: filename,content.
+	"""
+	try:
+		f = open(filename,"w")#oeffnen und schliessen =>
+		f.close()			#datei ist jetzt genullt
+		f = open(filename,"a")	#anhaengend oeffnen
+		f.write(content)
+		f.close()
+		return ""
+	except:
+		#TODO: debug
+		#if self.debug >=1:
+		print "(EE)[%s]: \"%s\" is not writeable!"%(__name__, filename)
+		return filename
+
+def basename(filename):
+	return os.path.basename(filename)
+	
+
+
+def gen_temp_dir(prefix='cryptobox--'):
+	'''returns the name of a secure temporary directory 
+	with optional prefix as parameter'''
+	dirname=tempfile.mkdtemp("",prefix)
+	dirname+="/"
+	return dirname
+
+def gen_temp_file(suffix="--cryptobox"):
+	"""
+	returns the name of a generated temporay file.
+	optionally gets a suffix for the filename.
+	"""
+	return tempfile.mkstemp(suffix)[1]
+