From: Alexey Tourbin <at@altlinux.ru>
To: ALT Devel discussion list <devel@lists.altlinux.org>
Subject: Re: [devel] bad paths in rpm packages
Date: Tue, 25 Mar 2008 05:50:03 +0300
Message-ID: <20080325025003.GJ31135@solemn.turbinal> (raw)
In-Reply-To: <20080324232051.GC21713@wo.int.altlinux.org>
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On Tue, Mar 25, 2008 at 02:20:51AM +0300, Dmitry V. Levin wrote:
> > > > $ rpmpeek /ALT/Sisyphus/files/SRPMS/pear-core-1.6.2-alt6.src.rpm fgrep /. pear-core.spec
> > > > %pear_dir/.*
> > >
> > > Надо просто добавить проверку в rpm-build.
> > > Аналогичная проверка на то, что все пути начинаются от корня,
> > > там уже есть. Такие пакеты просто не должны собираться.
> >
> > Посмотри повнимательнее.
> > Мне кажется это (ещё и) проблема глоба для %files.
>
> Ещё и.
Собственно, встал вопрос, как определить: какноничен ли путь,
или не каноничен? Пришлось написать ахтомат (см. ниже).
Но тут всплыла другая проблема: путь может быть каноничен,
но не кошерен. rpm позволяет запаковать некошерный путь:
%install
install -pD /dev/null %buildroot/etc/rc.d/init.d/functions
ln -s rc.d/init.d %buildroot/etc/init.d
%files
/etc/init.d/functions
$ rpm -bb test.spec
...
warning: Installed (but unpackaged) file(s) found:
/etc/init.d
/etc/rc.d/init.d/functions
Wrote: /home/at/RPM/RPMS/athlon/test-1.0-alt1.athlon.rpm
$ rpm -qlvp /home/at/RPM/RPMS/athlon/test-1.0-alt1.athlon.rpm
-rwxr-xr-x 1 root root 0 Mar 20 18:50 /etc/init.d/functions
$
Куда ни кинь, всюду клин.
А ты говоришь "загадка".
commit 44a9bc68edcc01c08a2483dd90b2159fe9b35e36
Author: Alexey Tourbin <at@altlinux>
Date: Tue Mar 25 05:33:59 2008 +0300
file.c (addFile): file path must be canonical (new function pathIsCanonical)
diff --git a/build/files.c b/build/files.c
index 114d575..35d34be 100644
--- a/build/files.c
+++ b/build/files.c
@@ -1487,6 +1487,66 @@ static /*@null@*/ FileListRec freeFileList(/*@only@*/ FileListRec fileList,
return NULL;
}
+/* Written by Alexey Tourbin! */
+static int pathIsCanonical(const char *path)
+{
+ enum {
+ ST_NONE,
+ ST_SLASH,
+ ST_SLASHDOT,
+ ST_SLASHDOTDOT
+ } state = ST_NONE;
+ const char *p = path;
+ while (1) {
+ int c = *p;
+ switch (c) {
+ case '/':
+ switch (state) {
+ case ST_SLASH:
+ case ST_SLASHDOT:
+ case ST_SLASHDOTDOT:
+ return 0;
+ default:
+ state = ST_SLASH;
+ break;
+ }
+ break;
+ case '.':
+ switch (state) {
+ case ST_SLASH:
+ state = ST_SLASHDOT;
+ break;
+ case ST_SLASHDOT:
+ state = ST_SLASHDOTDOT;
+ break;
+ default:
+ state = ST_NONE;
+ break;
+ }
+ break;
+ case '\0':
+ switch (state) {
+ case ST_SLASHDOT:
+ case ST_SLASHDOTDOT:
+ return 0;
+ case ST_SLASH:
+ if (p > path + 1)
+ return 0;
+ return 1;
+ default:
+ return 1;
+ }
+ break;
+ default:
+ state = ST_NONE;
+ break;
+ }
+ p++;
+ }
+ /* not reachable */
+ return 0;
+}
+
/**
* Add a file to the package manifest.
* @param fl package file tree walk data
@@ -1553,6 +1613,13 @@ static int addFile(FileList fl, const char * diskURL,
return RPMERR_BADSPEC;
}
+ if (!pathIsCanonical(fileURL)) {
+ rpmError(RPMERR_BADSPEC,
+ _("File path must be canonical: %s\n"), fileURL);
+ fl->processingFailed = 1;
+ return RPMERR_BADSPEC;
+ }
+
/* If we are using a prefix, validate the file */
if (!fl->inFtw && fl->prefix) {
const char *prefixTest;
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next prev parent reply other threads:[~2008-03-25 2:50 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-03-24 23:07 Alexey Tourbin
2008-03-24 23:13 ` Dmitry V. Levin
2008-03-24 23:17 ` Alexey Tourbin
2008-03-24 23:20 ` Dmitry V. Levin
2008-03-25 2:50 ` Alexey Tourbin [this message]
2008-03-25 3:08 ` Alexey Tourbin
2008-03-25 22:29 ` Alexey Tourbin
2008-03-25 4:04 ` Alexey Tourbin
2008-03-25 0:05 ` Alexey Tourbin
2008-03-24 23:13 ` Alexey Tourbin
2008-03-24 23:42 ` Alexey Tourbin
2008-03-24 23:44 ` Alexey Tourbin
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