EagleCAD 7.5.0 patcher script

auto-patch.py

#!/usr/bin/python2

import sys
import md5

if len(sys.argv) < 2:
  print "Usage: " + sys.argv[0] + " [eagle 7.5.0 binary]\nWindows patches will be applied if .exe"
  sys.exit()

# offsets
# no OSX patch here
# idk if this runs right on win32
if "exe" in sys.argv[1]:
  platform    = "win32"
  splash_off  = 0xd791c
  md5_chk     = "bfb346e40aa3f3b8f0753b0939fd2f15"
else:
  platform    = "linux"
  splash_off  = 0x10dafb
  md5_chk     = "9afd663ed0ec5b3c9889c6665136d92f"

f = open(sys.argv[1],'r')  
backup_f = open(sys.argv[1] + ".bak", 'w+')

m = md5.md5(f.read()).hexdigest() 

if m != md5_chk:
  print "Fatal: MD5 checksum failed :( " + m
  sys.exit()

print "checksum passed"

f.seek(splash_off)

orig = f.read(5)

if platform == "linux":
  if orig != "\xe8\x20\x43\xf4\xff": 
    print "Fatal: original bytes not in place - WTF?"
    sys.exit()
elif platform == 'win32':
  if orig != "\xe8\x8f\xe4\xff\xff": 
    print "Fatal: original bytes not in place - WTF?"
    sys.exit()

# oh god, 25M buffer
# this is all really really bad
# should've done in C
f.seek(0)
buf = f.read()
backup_f.seek(0)
backup_f.write(buf)
backup_f.close()

f.close()
f = open(sys.argv[1], 'w+')

print "backup written to " + sys.argv[1]+".bak"
print "...applying patch...", 

patch_buf = buf[:splash_off] + "\x90"*5 + buf[splash_off+5:]

print "done!"

f.seek(0)
f.write(patch_buf)
f.close()

print("???:D???")