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authorAndrew Tridgell <tridge@samba.org>2003-08-13 01:53:07 +0000
committerAndrew Tridgell <tridge@samba.org>2003-08-13 01:53:07 +0000
commitef2e26c91b80556af033d3335e55f5dfa6fff31d (patch)
treefaa21bfd7e7b5247250b47c7891dc1a5ebee6be9 /source4/python/examples/tdbpack/oldtdbutil.py
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first public release of samba4 code
(This used to be commit b0510b5428b3461aeb9bbe3cc95f62fc73e2b97f)
Diffstat (limited to 'source4/python/examples/tdbpack/oldtdbutil.py')
-rw-r--r--source4/python/examples/tdbpack/oldtdbutil.py144
1 files changed, 144 insertions, 0 deletions
diff --git a/source4/python/examples/tdbpack/oldtdbutil.py b/source4/python/examples/tdbpack/oldtdbutil.py
new file mode 100644
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+++ b/source4/python/examples/tdbpack/oldtdbutil.py
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+#!/usr/bin/python
+#############################################################
+# tdbutil
+#
+# Purpose:
+# Contains functions that are used to pack and unpack data
+# from Samba's tdb databases. Samba sometimes represents complex
+# data structures as a single value in a database. These functions
+# allow other python scripts to package data types into a single python
+# string and unpackage them.
+#
+#
+# XXXXX: This code is no longer used; it's just here for testing
+# compatibility with the new (much faster) C implementation.
+#
+##############################################################
+import string
+
+def pack(format,list):
+ retstring = ''
+ listind = 0
+
+ # Cycle through format entries
+ for type in format:
+ # Null Terminated String
+ if (type == 'f' or type == 'P'):
+ retstring = retstring + list[listind] + "\000"
+ # 4 Byte Number
+ if (type == 'd'):
+ retstring = retstring + PackNum(list[listind],4)
+ # 2 Byte Number
+ if (type == 'w'):
+ retstring = retstring + PackNum(list[listind],2)
+ # Pointer Value
+ if (type == 'p'):
+ if (list[listind]):
+ retstring = retstring + PackNum(1,4)
+ else:
+ retstring = retstring + PackNum(0,4)
+ # Buffer and Length
+ if (type == 'B'):
+ # length
+ length = list[listind]
+ retstring = retstring + PackNum(length,4)
+ length = int(length)
+ listind = listind + 1
+ # buffer
+ retstring = retstring + list[listind][:length]
+
+ listind = listind + 1
+
+ return retstring
+
+def unpack(format,buffer):
+ retlist = []
+ bufind = 0
+
+ lasttype = ""
+ for type in format:
+ # Pointer Value
+ if (type == 'p'):
+ newvalue = UnpackNum(buffer[bufind:bufind+4])
+ bufind = bufind + 4
+ if (newvalue):
+ newvalue = 1L
+ else:
+ newvalue = 0L
+ retlist.append(newvalue)
+ # Previous character till end of data
+ elif (type == '$'):
+ if (lasttype == 'f'):
+ while (bufind < len(buffer)):
+ newstring = ''
+ while (buffer[bufind] != '\000'):
+ newstring = newstring + buffer[bufind]
+ bufind = bufind + 1
+ bufind = bufind + 1
+ retlist.append(newstring)
+ # Null Terminated String
+ elif (type == 'f' or type == 'P'):
+ newstring = ''
+ while (buffer[bufind] != '\000'):
+ newstring = newstring + buffer[bufind]
+ bufind = bufind + 1
+ bufind = bufind + 1
+ retlist.append(newstring)
+ # 4 Byte Number
+ elif (type == 'd'):
+ newvalue = UnpackNum(buffer[bufind:bufind+4])
+ bufind = bufind + 4
+ retlist.append(newvalue)
+ # 2 Byte Number
+ elif (type == 'w'):
+ newvalue = UnpackNum(buffer[bufind:bufind+2])
+ bufind = bufind + 2
+ retlist.append(newvalue)
+ # Length and Buffer
+ elif (type == 'B'):
+ # Length
+ length = UnpackNum(buffer[bufind:bufind+4])
+ bufind = bufind + 4
+ retlist.append(length)
+ length = int(length)
+ # Buffer
+ retlist.append(buffer[bufind:bufind+length])
+ bufind = bufind + length
+
+ lasttype = type
+
+ return ((retlist,buffer[bufind:]))
+
+def PackNum(myint,size):
+ retstring = ''
+ size = size * 2
+ hint = hex(myint)[2:]
+
+ # Check for long notation
+ if (hint[-1:] == 'L'):
+ hint = hint[:-1]
+
+ addon = size - len(hint)
+ for i in range(0,addon):
+ hint = '0' + hint
+
+ while (size > 0):
+ val = string.atoi(hint[size-2:size],16)
+ retstring = retstring + chr(val)
+ size = size - 2
+
+ return retstring
+
+def UnpackNum(buffer):
+ size = len(buffer)
+ mystring = ''
+
+ for i in range(size-1,-1,-1):
+ val = hex(ord(buffer[i]))[2:]
+ if (len(val) == 1):
+ val = '0' + val
+ mystring = mystring + val
+ if (len(mystring) > 4):
+ return string.atol(mystring,16)
+ else:
+ return string.atoi(mystring,16)