[issue18167] cgi.FieldStorage fails to handle multipart/form-data when \r\n appears at end of 65535 bytes without other newlines

[Chris AtLee]

Chris AtLee added the comment:

To demonstrate how to hit this in a real use case, run the attached script which implements a simple http server that saves POSTed files to a local file "got_data". It returns the sha1sum of the POSTed file as the http response.

Then, create a test file consisting of 65,535 null bytes, and submit with curl.

-> % dd if=/dev/zero of=data bs=1 count=65535                                                                                           
65535+0 records in
65535+0 records out
65535 bytes (66 kB) copied, 0.0890487 s, 736 kB/s

-> % sha1sum data
391edab7225a1de662ebc3a1a670a20d8e6a226b  data

-> % curl -Fdata=@data http://localhost:8080/
8dd623ef130a8cd3e97086101a6e1255a91fb916%

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Added file: http://bugs.python.org/file30529/test_cgi_server.py

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