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author | David Herrmann <dh.herrmann@gmail.com> | 2015-06-10 18:26:16 +0200 |
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committer | David Herrmann <dh.herrmann@gmail.com> | 2015-06-10 20:22:40 +0200 |
commit | 7cd4dbe9ca492eabc4c3821e1cb296649a967125 (patch) | |
tree | 0bf8e118e6af99c0dc7987563cbc0be96c16a848 /LICENSE.LGPL2.1 | |
parent | a8467435a0c4962cab89574f65e7318ef389351f (diff) |
bus: fix bloom_add_prefixes() to add all required data
Lets look at an example where we add arg0="/foo/bar/waldo" to a
bloom-filter. The following strings are added:
"arg0:/foo/bar/waldo"
"arg0-slash-prefix:/foo/bar"
"arg0-slash-prefix:/foo"
Two problems arise:
1) If we match on "arg0path=/foo/bar/waldo", the dbus-spec explicitly
states that equal strings are also considered prefixes. However, in the
bloom-match, we can only provide a single match-filter. Therefore, we have
to add "arg0-slash-prefix:/foo/bar/waldo" there, but this never occured in
the bloom-mask of the message.
Hence, this patch makes sure bloom_add_prefixes() adds the full path as
prefix, too.
2) If we match on "arg0path=/foo/", the dbus-spec states that arg0path
does prefix-matching with the trailing slash _included_, unlike
path_namespace= matches, which does *not* include them. This is
inconsistent, but we have to support the specs. Therefore, we must add
prefixes with _and_ without trailing separators.
Hence, this patch makes sure bloom_add_prefixes() adds all prefixes with
the trailing slash included.
The final set of strings added therefore is:
"arg0:/foo/bar/waldo"
"arg0-slash-prefix:/foo/bar/waldo"
"arg0-slash-prefix:/foo/bar/"
"arg0-slash-prefix:/foo/bar"
"arg0-slash-prefix:/foo/"
"arg0-slash-prefix:/foo"
"arg0-slash-prefix:/"
Diffstat (limited to 'LICENSE.LGPL2.1')
0 files changed, 0 insertions, 0 deletions