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common: Fix iobuf_peek corner case.

Browse source 
Previously, iobuf_peek on a file smaller than 'buflen' would hang.

* common/iobuf.c (underflow): Generalize by adding a target parameter.
(iobuf_peek): Use this to prevent looping here.
* tests/openpgp/Makefile.am (TESTS): Add new test.
* tests/openpgp/setup.scm (dearmor): Move function...
* tests/openpgp/defs.scm (dearmor): ... here.
* tests/openpgp/issue2419.scm: New file.
* tests/openpgp/samplemsgs/issue2419.asc: Likewise.

GnuPG-bug-id: 2419
Signed-off-by: Justus Winter <justus@g10code.com>
This commit is contained in:
Justus Winter 2016-07-26 18:29:01 +02:00
parent 046338b849
commit b2572b0c38
6 changed files with 58 additions and 11 deletions
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8
tests/openpgp/setup.scm
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@ -55,14 +55,6 @@
CLOSED_FD fd STDERR_FILENO)))
'(500 9000 32000 80000))
(define (dearmor source-name sink-name)
(pipe:do
(pipe:open source-name (logior O_RDONLY O_BINARY))
(pipe:spawn `(,@GPG --dearmor))
(pipe:write-to sink-name
(logior O_WRONLY O_CREAT O_BINARY)
#o600)))
(for-each-p "Unpacking samples"
(lambda (name)
(dearmor (in-srcdir (string-append name "o.asc")) name))