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Use SAFEBLOCK instead of arbitrary large number

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This commit is contained in:
Andrew Murray 2022-03-16 21:23:29 +11:00
parent 0d5a2d2b83
commit e3b53dc7e0
1 changed files with 2 additions and 2 deletions
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4
src/PIL/PpmImagePlugin.py
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@ -141,7 +141,7 @@ class PpmPlainDecoder(ImageFile.PyDecoder):
_pulls_fd = True
def _read_block(self):
return self.fd.read(10**6)
return self.fd.read(ImageFile.SAFEBLOCK)
def _find_comment_end(self, block, start=0):
a = block.find(b"\n", start)
@ -186,8 +186,8 @@ class PpmPlainDecoder(ImageFile.PyDecoder):
while block and comment_spans:
comment_end = self._find_comment_end(block)
if comment_end != -1: # comment ends in this block
comment_spans = False
block = block[comment_end + 1 :] # delete tail of previous comment
comment_spans = False
else: # comment spans whole block
block = self._read_block()