DeforaNetworks/deepstate
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Merge pull request #178 from trailofbits/improve_reducer

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Speed up the reducer
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Alex Groce 2019-04-26 20:44:22 -07:00 committed by GitHub
commit 9099dfa2d1
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1 changed files with 6 additions and 2 deletions
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bin/deepstate/reducer.py
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@ -45,6 +45,10 @@ def main():
"--timeout", type=int, help="After this amount of time (in seconds), give up on reduction.", "--timeout", type=int, help="After this amount of time (in seconds), give up on reduction.",
default=1200) default=1200)
parser.add_argument(
"--fast", action='store_true',
help="Faster, less complete, reduction (no range or byte pattern attempts).")
class TimeoutException(Exception): class TimeoutException(Exception):
pass pass
@ -139,7 +143,7 @@ def main():
changed = True changed = True
break break
if not changed: if (not args.fast) and (not changed):
for b in range(0, len(currentTest)): for b in range(0, len(currentTest)):
for v in range(b+1, len(currentTest)): for v in range(b+1, len(currentTest)):
newTest = currentTest[:b] + currentTest[v:] newTest = currentTest[:b] + currentTest[v:]
@ -177,7 +181,7 @@ def main():
changed = True changed = True
break break
if not changed: if (not args.fast) and (not changed):
for b1 in range(0, len(currentTest)-4): for b1 in range(0, len(currentTest)-4):
for b2 in range(b1+2, len(currentTest)-4): for b2 in range(b1+2, len(currentTest)-4):
v1 = (currentTest[b1], currentTest[b1+1]) v1 = (currentTest[b1], currentTest[b1+1])