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-rw-r--r--src/ota/Fork.txt1
-rw-r--r--src/ota/LICENSE201
-rw-r--r--src/ota/unpacker.py52
-rw-r--r--src/ota/util.py70
4 files changed, 324 insertions, 0 deletions
diff --git a/src/ota/Fork.txt b/src/ota/Fork.txt
new file mode 100644
index 0000000..dbc1056
--- /dev/null
+++ b/src/ota/Fork.txt
@@ -0,0 +1 @@
+This directory contains source forked from https://github.com/daniel-thompson/ota-dfu-python.
diff --git a/src/ota/LICENSE b/src/ota/LICENSE
new file mode 100644
index 0000000..261eeb9
--- /dev/null
+++ b/src/ota/LICENSE
@@ -0,0 +1,201 @@
+ Apache License
+ Version 2.0, January 2004
+ http://www.apache.org/licenses/
+
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+
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diff --git a/src/ota/unpacker.py b/src/ota/unpacker.py
new file mode 100644
index 0000000..ab2ecbc
--- /dev/null
+++ b/src/ota/unpacker.py
@@ -0,0 +1,52 @@
+import os.path
+import zipfile
+import tempfile
+import random
+import string
+import shutil
+import re
+
+from os.path import basename
+
+class Unpacker(object):
+ #--------------------------------------------------------------------------
+ #
+ #--------------------------------------------------------------------------
+ def entropy(self, length):
+ return ''.join(random.choice('abcdefghijklmnopqrstuvwxyz') for i in range (length))
+
+ #--------------------------------------------------------------------------
+ #
+ #--------------------------------------------------------------------------
+ def unpack_zipfile(self, file):
+
+ if not os.path.isfile(file):
+ raise Exception("Error: file, not found!")
+
+ # Create unique working direction into which the zip file is expanded
+ self.unzip_dir = "{0}/{1}_{2}".format(tempfile.gettempdir(), os.path.splitext(basename(file))[0], self.entropy(6))
+
+ datfilename = ""
+ binfilename = ""
+
+ with zipfile.ZipFile(file, 'r') as zip:
+ files = [item.filename for item in zip.infolist()]
+ datfilename = [m.group(0) for f in files for m in [re.search('.*\.dat', f)] if m].pop()
+ binfilename = [m.group(0) for f in files for m in [re.search('.*\.bin', f)] if m].pop()
+
+ zip.extractall(r'{0}'.format(self.unzip_dir))
+
+ datfile = "{0}/{1}".format(self.unzip_dir, datfilename)
+ binfile = "{0}/{1}".format(self.unzip_dir, binfilename)
+
+ # print "DAT file: " + datfile
+ # print "BIN file: " + binfile
+
+ return binfile, datfile
+
+ #--------------------------------------------------------------------------
+ #
+ #--------------------------------------------------------------------------
+ def delete(self):
+ # delete self.unzip_dir and its contents
+ shutil.rmtree(self.unzip_dir)
diff --git a/src/ota/util.py b/src/ota/util.py
new file mode 100644
index 0000000..401d494
--- /dev/null
+++ b/src/ota/util.py
@@ -0,0 +1,70 @@
+import sys
+import binascii
+import re
+
+def bytes_to_uint32_le(bytes):
+ return (int(bytes[3], 16) << 24) | (int(bytes[2], 16) << 16) | (int(bytes[1], 16) << 8) | (int(bytes[0], 16) << 0)
+
+def uint32_to_bytes_le(uint32):
+ return [(uint32 >> 0) & 0xff,
+ (uint32 >> 8) & 0xff,
+ (uint32 >> 16) & 0xff,
+ (uint32 >> 24) & 0xff]
+
+def uint16_to_bytes_le(value):
+ return [(value >> 0 & 0xFF),
+ (value >> 8 & 0xFF)]
+
+def zero_pad_array_le(data, padsize):
+ for i in range(0, padsize):
+ data.insert(0, 0)
+
+def array_to_hex_string(arr):
+ hex_str = ""
+ for val in arr:
+ if val > 255:
+ raise Exception("Value is greater than it is possible to represent with one byte")
+ hex_str += "%02x" % val
+
+ return hex_str
+
+def crc32_unsigned(bytestring):
+ return binascii.crc32(bytestring.encode('UTF-8')) % (1 << 32)
+
+def mac_string_to_uint(mac):
+ parts = list(re.match('(..):(..):(..):(..):(..):(..)', mac).groups())
+ ints = [int(x, 16) for x in parts]
+
+ res = 0
+ for i in range(0, len(ints)):
+ res += (ints[len(ints)-1 - i] << 8*i)
+
+ return res
+
+def uint_to_mac_string(mac):
+ ints = [0, 0, 0, 0, 0, 0]
+ for i in range(0, len(ints)):
+ ints[len(ints)-1 - i] = (mac >> 8*i) & 0xff
+
+ return ':'.join(['{:02x}'.format(x).upper() for x in ints])
+
+# Print a nice console progress bar
+def print_progress(iteration, total, prefix = '', suffix = '', decimals = 1, barLength = 100):
+ """
+ Call in a loop to create terminal progress bar
+ @params:
+ iteration - Required : current iteration (Int)
+ total - Required : total iterations (Int)
+ prefix - Optional : prefix string (Str)
+ suffix - Optional : suffix string (Str)
+ decimals - Optional : positive number of decimals in percent complete (Int)
+ barLength - Optional : character length of bar (Int)
+ """
+ formatStr = "{0:." + str(decimals) + "f}"
+ percents = formatStr.format(100 * (iteration / float(total)))
+ filledLength = int(round(barLength * iteration / float(total)))
+ bar = 'x' * filledLength + '-' * (barLength - filledLength)
+ sys.stdout.write('\r%s |%s| %s%s %s (%d of %d bytes)' % (prefix, bar, percents, '%', suffix, iteration, total)),
+ if iteration == total:
+ sys.stdout.write('\n')
+ sys.stdout.flush()