Bug#695274: libparse-debian-packages-perl: Problem parsing stanzas with more than 1 multiline entry
Simon Kainz
simon at familiekainz.at
Thu Dec 6 14:11:27 UTC 2012
Package: libparse-debian-packages-perl
Version: 0.03-1
Severity: grave
Tags: upstream
Justification: causes non-serious data loss
Using libparse-debain-packages-perl, the following problem arises when parsing
stanzas with more than 1 multiline entry:
If a multiline entry is found, all lines of this entry are added to the result
map under the key "body".
If a different multiline entry is processed later on,
all multiline entries are added to the same map entry "body", effectively
mixing up content from different multiline fields.
To demonstrate this, i used the attached source "test_packages.pl", together
with the file unzipped file "Packages" from
ftp://ftp.tugraz.at/mirror/debian/dists/sid/main
/binary-amd64/Packages.gz.
The relevant part of the Packages file looks like this:
Package: browser-plugin-vlc
Source: npapi-vlc
Version: 2.0.0-2
Installed-Size: 201
Maintainer: Debian Multimedia Maintainers <pkg-multimedia-
maintainers at lists.alioth.debian.org>
Architecture: amd64
Replaces: mozilla-plugin-vlc (<< 2.0.0)
Depends: vlc, libatk1.0-0 (>= 1.12.4), libc6 (>= 2.3.4), libcairo2 (>= 1.2.4),
libfontconfig1 (>= 2.9.0), libfreetype6 (>= 2.2.1), libgcc1 (>= 1:4.1.1),
libgdk-pixbuf2.0-0 (>= 2.22.0), libglib2.0-0 (>= 2.12.0), libgtk2.0-0 (>=
2.24.0), libice6 (>= 1:1.0.0), libpango1.0-0 (>= 1.14.0), libsm6, libstdc++6
(>= 4.1.1), libvlc5 (>= 1.1.0), libx11-6
Breaks: mozilla-plugin-vlc (<< 2.0.0)
Description: multimedia plugin for web browsers based on VLC
Homepage: http://www.videolan.org/vlc/
Description-md5: 1dfbd075b62a574a99794b2eb520c80e
Npp-Applications: 92650c4d-4b8e-4d2a-b7eb-24ecf4f6b63a,
ec8030f7-c20a-464f-9b0e-13a3a9e97384
Npp-Description: play video and audio in Firefox using the VLC Multimedia
Player
Npp-File: libvlcplugin.so
Npp-Mimetype: application/mpeg4-iod,
application/mpeg4-muxcodetable,
application/ogg,
application/x-google-vlc-plugin,
application/x-mplayer2,
application/x-ogg,
application/x-vlc-plugin,
audio/3gpp,
audio/3gpp2,
audio/mpeg,
audio/mpeg4,
audio/wav,
audio/x-mpeg,
audio/x-wav,
video/3gpp,
video/3gpp2,
video/mpeg,
video/mpeg-system,
video/mpeg4,
video/quicktime,
video/x-mpeg,
video/x-mpeg-system,
video/x-ms-asf,
video/x-ms-asf-plugin,
video/x-ms-wmv,
video/x-msvideo
Npp-Name: VLC Multimedia Plugin
Tag: uitoolkit::gtk
Section: video
Priority: optional
Filename: pool/main/n/npapi-vlc/browser-plugin-vlc_2.0.0-2_amd64.deb
Size: 51758
MD5sum: 1714be2acb3cd2d7c1a53f5d86704c34
SHA1: aa57cb8dbb6d7291862968bf27e94ad8652f1fa2
SHA256: 1ca5784dedc8735f652bc47d50afc4b19d7577fd68b321cf063244bb408f8209
The output using libparse-debian-packages-perl yields the following output:
---
Architecture: amd64
Breaks: mozilla-plugin-vlc (<< 2.0.0)
Depends: 'vlc, libatk1.0-0 (>= 1.12.4), libc6 (>= 2.3.4), libcairo2 (>= 1.2.4),
libfontconfig1 (>= 2.9.0), libfreetype6 (>= 2.2.1), libgcc1 (>= 1:4.1.1),
libgdk-pixbuf2.0-0 (>= 2.22.0), libglib2.0-0 (>= 2.12.0), libgtk2.0-0 (>=
2.24.0), libice6 (>= 1:1.0.0), libpango1.0-0 (>= 1.14.0), libsm6, libstdc++6
(>= 4.1.1), libvlc5 (>= 1.1.0), libx11-6'
Description: multimedia plugin for web browsers based on VLC
Description-md5: 1dfbd075b62a574a99794b2eb520c80e
Filename: pool/main/n/npapi-vlc/browser-plugin-vlc_2.0.0-2_amd64.deb
Homepage: http://www.videolan.org/vlc/
Installed-Size: 201
MD5sum: 1714be2acb3cd2d7c1a53f5d86704c34
Maintainer: 'Debian Multimedia Maintainers <pkg-multimedia-
maintainers at lists.alioth.debian.org>'
Npp-Applications: '92650c4d-4b8e-4d2a-b7eb-24ecf4f6b63a,'
Npp-Description: play video and audio in Firefox using the VLC Multimedia
Player
Npp-File: libvlcplugin.so
Npp-Mimetype: 'application/mpeg4-iod,'
Npp-Name: VLC Multimedia Plugin
Package: browser-plugin-vlc
Priority: optional
Replaces: mozilla-plugin-vlc (<< 2.0.0)
SHA1: aa57cb8dbb6d7291862968bf27e94ad8652f1fa2
SHA256: 1ca5784dedc8735f652bc47d50afc4b19d7577fd68b321cf063244bb408f8209
Section: video
Size: 51758
Source: npapi-vlc
Tag: uitoolkit::gtk
Version: 2.0.0-2
body: |2
ec8030f7-c20a-464f-9b0e-13a3a9e97384
application/mpeg4-muxcodetable,
application/ogg,
application/x-google-vlc-plugin,
application/x-mplayer2,
application/x-ogg,
application/x-vlc-plugin,
audio/3gpp,
audio/3gpp2,
audio/mpeg,
audio/mpeg4,
audio/wav,
audio/x-mpeg,
audio/x-wav,
video/3gpp,
video/3gpp2,
video/mpeg,
video/mpeg-system,
video/mpeg4,
video/quicktime,
video/x-mpeg,
video/x-mpeg-system,
video/x-ms-asf,
video/x-ms-asf-plugin,
video/x-ms-wmv,
video/x-msvideo
On can easily see, that the line
ec8030f7-c20a-464f-9b0e-13a3a9e97384
from the Npp-Applications: entry gets added to the body: entry, which now holds
all extra lines from the Npp-Applications: and Npp-Mimetype: entries. Also the
entries for Npp-Applications: and Npp-Mimetype: now contain only one line,
which is not the original content.This is cleary a bug, as it is now impossible
to reconstruct the original content.
-- System Information:
Debian Release: wheezy/sid
APT prefers testing
APT policy: (500, 'testing')
Architecture: amd64 (x86_64)
Kernel: Linux 3.2.0-2-amd64 (SMP w/8 CPU cores)
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968)
Shell: /bin/sh linked to /bin/dash
Versions of packages libparse-debian-packages-perl depends on:
ii libyaml-perl 0.81-1
ii perl 5.14.2-13
libparse-debian-packages-perl recommends no packages.
libparse-debian-packages-perl suggests no packages.
-- debconf-show failed
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