1 files changed, 179 insertions, 0 deletions
diff --git a/decode/analyze.py b/decode/analyze.py
new file mode 100755
index 00000000..36db3962
--- /dev/null
+++ b/decode/analyze.py
@@ -0,0 +1,179 @@
+#!/usr/bin/python
+# -*- Mode: python; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details:
+#
+# Copyright (C) 2011 Red Hat, Inc.
+#
+# ---- Dumps UsbSnoopy XML captures of WMC traffic
+
+from xml.sax import saxutils
+from xml.sax import handler
+import binascii
+import string
+
+packets = []
+counts = {}
+
+TO_UNKNOWN = 0
+TO_MODEM = 1
+TO_HOST = 2
+
+class Packet:
+    def __init__(self, data, idx):
+        if len(data) % 2 != 0:
+            raise Exception("bad data length")
+
+        self.idx = idx
+        self.type = TO_UNKNOWN
+        if data[:14] == "41542a574d433d":
+            # host->device: remove the AT*WMC= bits and newline at the end
+            data = data[14:]
+            if data[len(data) - 2:] == "0d":
+                data = data[:len(data) - 2]
+            self.type = TO_MODEM
+#	elif data[len(data) - 6:] == "30307e":
+#            # device->host: remove HDLC terminator and fake CRC
+#            data = data[:len(data) - 6]
+#            self.type = TO_HOST
+	elif data[len(data) - 2:] == "7e":
+            # device->host: remove HDLC terminator and CRC
+            data = data[:len(data) - 6]
+            self.type = TO_HOST
+
+        self.data = binascii.unhexlify(data)
+        self.four = data[:4]
+
+        # PPP-unescape TO_MODEM data
+        escape = False
+        new_data = ""
+        for i in self.data:
+            if ord(i) == 0x7D:
+                escape = True
+            elif escape == True:
+                new_data += chr(ord(i) ^ 0x20)
+                escape = False
+            else:
+                new_data += i
+        self.data = new_data
+
+    def add_ascii(self, line, items):
+        if len(line) < 53:
+            line += " " * (53 - len(line))
+        for i in items:
+            if chr(i) in string.printable and i >= 32:
+                line += chr(i)
+            else:
+                line += "."
+        return line
+
+    def show(self):
+        line = "*"
+        if self.type == TO_MODEM:
+            line = ">"
+        elif self.type == TO_HOST:
+            line = "<"
+
+	offset = 0
+        items = []
+        printed = False
+        for i in self.data:
+            printed = False
+            line += " %02x" % ord(i)
+            items.append(ord(i))
+            if len(items) % 16 == 0:
+                print "%03d: %s" % (offset, self.add_ascii(line, items))
+                line = " "
+                items = []
+                printed = True
+                offset += 16
+        if not printed:
+            print "%03d: %s" % (offset, self.add_ascii(line, items))
+        print ""
+
+class FindPackets(handler.ContentHandler):
+    def __init__(self):
+        self.inFunction = False
+        self.inPayload = False
+        self.ignore = False
+        self.inTimestamp = False
+        self.timestamp = None
+        self.packet = None
+        self.idx = 1
+
+    def startElement(self, name, attrs):
+        if name == "function":
+            self.inFunction = True
+        elif name == "payloadbytes":
+            self.inPayload = True
+        elif name == "timestamp":
+            self.inTimestamp = True
+
+    def characters(self, ch):
+        if self.ignore:
+            return
+
+        stripped = ch.strip()
+        if self.inFunction and ch != "BULK_OR_INTERRUPT_TRANSFER":
+            self.ignore = True
+            return
+        elif self.inTimestamp:
+            self.timestamp = stripped
+        elif self.inPayload and len(stripped) > 0:
+            if self.packet == None:
+                self.packet = stripped
+            else:
+                self.packet += stripped
+
+    def endElement(self, name):
+        if name == "function":
+            self.inFunction = False
+        elif name == "payloadbytes":
+            self.inPayload = False
+        elif name == "payload":
+            if self.packet:
+		p = Packet(self.packet, self.idx)
+		self.idx = self.idx + 1
+                packets.append(p)
+                self.packet = None
+
+            self.ignore = False
+            self.timestamp = None
+        elif name == "timestamp":
+            self.inTimestamp = False
+
+
+from xml.sax import make_parser
+from xml.sax import parse
+import sys
+
+if __name__ == "__main__":
+    dh = FindPackets()
+    parse(sys.argv[1], dh)
+
+    cmds = {}
+    for p in packets:
+        if cmds.has_key(p.four):
+            cmds[p.four].append(p)
+        else:
+            cmds[p.four] = [p]
+        if len(sys.argv) > 2:
+            if p.four == sys.argv[2]:
+                p.show()
+        else:
+            p.show()
+
+    print ""
+    print "cmd #tot"
+    for k in cmds.keys():
+        print "%s (%d)" % (k, len(cmds[k]))
+    print ""
+