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-rw-r--r--scripts/minimaws/lib/auxverbs.py155
1 files changed, 155 insertions, 0 deletions
diff --git a/scripts/minimaws/lib/auxverbs.py b/scripts/minimaws/lib/auxverbs.py
index c68c528af6f..b67a2fafb99 100644
--- a/scripts/minimaws/lib/auxverbs.py
+++ b/scripts/minimaws/lib/auxverbs.py
@@ -5,7 +5,150 @@
from . import dbaccess
+import codecs
+import hashlib
+import os
+import os.path
+import struct
import sys
+import zlib
+
+
+class _Identifier(object):
+ def __init__(self, dbcurs, **kwargs):
+ super(_Identifier, self).__init__(**kwargs)
+ self.dbcurs = dbcurs
+ self.pathwidth = 0
+ self.labelwidth = 0
+ self.matches = { }
+ self.unmatched = [ ]
+
+ def processRomFile(self, path, f):
+ crc, sha1 = self.digestRom(f)
+ matched = False
+ for shortname, description, label, bad in self.dbcurs.get_rom_dumps(crc, sha1):
+ matched = True
+ self.labelwidth = max(len(label), self.labelwidth)
+ romset = self.matches.get(shortname)
+ if romset is None:
+ romset = (description, [])
+ self.matches[shortname] = romset
+ romset[1].append((path, label, bad))
+ if not matched:
+ self.unmatched.append((path, crc, sha1))
+ self.pathwidth = max(len(path), self.pathwidth)
+
+ def processChd(self, path, sha1):
+ matched = False
+ for shortname, description, label, bad in self.dbcurs.get_disk_dumps(sha1):
+ matched = True
+ self.labelwidth = max(len(label), self.labelwidth)
+ romset = self.matches.get(shortname)
+ if romset is None:
+ romset = (description, [])
+ self.matches[shortname] = romset
+ romset[1].append((path, label, bad))
+ if not matched:
+ self.unmatched.append((path, None, sha1))
+ self.pathwidth = max(len(path), self.pathwidth)
+
+ def processFile(self, path):
+ if os.path.splitext(path)[1].lower() != '.chd':
+ with open(path, mode='rb', buffering=0) as f:
+ self.processRomFile(path, f)
+ else:
+ with open(path, mode='rb') as f:
+ sha1 = self.probeChd(f)
+ if sha1 is None:
+ f.seek(0)
+ self.processRomFile(path, f)
+ else:
+ self.processChd(path, sha1)
+
+ def processPath(self, path, depth=0):
+ try:
+ if not os.path.isdir(path):
+ self.processFile(path)
+ elif depth > 5:
+ sys.stderr.write('Not examining \'%s\' - maximum depth exceeded\n')
+ else:
+ for name in os.listdir(path):
+ self.processPath(os.path.join(path, name), depth + 1)
+ except BaseException as e:
+ sys.stderr.write('Error identifying \'%s\': %s\n' % (path, e))
+
+ def printResults(self):
+ pw = self.pathwidth - (self.pathwidth % 4) + 4
+ lw = self.labelwidth - (self.labelwidth % 4) + 4
+ first = True
+ for shortname, romset in sorted(self.matches.items()):
+ if first:
+ first = False
+ else:
+ sys.stdout.write('\n')
+ sys.stdout.write('%-20s%s\n' % (shortname, romset[0]))
+ for path, label, bad in romset[1]:
+ if bad:
+ sys.stdout.write(' %-*s= %-*s(BAD)\n' % (pw, path, lw, label))
+ else:
+ sys.stdout.write(' %-*s= %s\n' % (pw, path, label))
+ if self.unmatched:
+ if first:
+ first = False
+ else:
+ sys.stdout.write('\n')
+ sys.stdout.write('Unmatched\n')
+ for path, crc, sha1 in self.unmatched:
+ if crc is not None:
+ sys.stdout.write(' %-*sCRC(%08x) SHA1(%s)\n' % (pw, path, crc, sha1))
+ else:
+ sys.stdout.write(' %-*sSHA1(%s)\n' % (pw, path, sha1))
+
+ @staticmethod
+ def iterateBlocks(f, s=65536):
+ while True:
+ buf = f.read(s)
+ if buf:
+ yield buf
+ else:
+ break
+
+ @staticmethod
+ def digestRom(f):
+ crc = zlib.crc32(bytes())
+ sha = hashlib.sha1()
+ for block in _Identifier.iterateBlocks(f):
+ crc = zlib.crc32(block, crc)
+ sha.update(block)
+ return crc & 0xffffffff, sha.hexdigest()
+
+ @staticmethod
+ def probeChd(f):
+ buf = f.read(16)
+ if (len(buf) != 16) or (buf[:8] != b'MComprHD'):
+ return None
+ headerlen, version = struct.unpack('>II', buf[8:])
+ if version == 3:
+ if headerlen != 120:
+ return None
+ sha1offs = 80
+ elif version == 4:
+ if headerlen != 108:
+ return None
+ sha1offs = 48
+ elif version == 5:
+ if headerlen != 124:
+ return None
+ sha1offs = 84
+ else:
+ return None
+ f.seek(sha1offs)
+ if f.tell() != sha1offs:
+ return None
+ buf = f.read(20)
+ if len(buf) != 20:
+ return None
+ return codecs.getencoder('hex_codec')(buf)[0].decode('ascii')
def do_listfull(options):
@@ -68,6 +211,7 @@ def do_listbrothers(options):
dbcurs.close()
dbconn.close()
+
def do_listaffected(options):
dbconn = dbaccess.QueryConnection(options.database)
dbcurs = dbconn.cursor()
@@ -81,3 +225,14 @@ def do_listaffected(options):
sys.stderr.write('No matching systems found for \'%s\'\n' % (options.pattern, ))
dbcurs.close()
dbconn.close()
+
+
+def do_romident(options):
+ dbconn = dbaccess.QueryConnection(options.database)
+ dbcurs = dbconn.cursor()
+ ident = _Identifier(dbcurs)
+ for path in options.path:
+ ident.processPath(path)
+ ident.printResults()
+ dbcurs.close()
+ dbconn.close()