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authorLars Hjemli <hjemli@gmail.com>2009-08-17 09:19:05 +0200
committerLars Hjemli <hjemli@gmail.com>2009-08-17 09:24:36 +0200
commit8a631b1173b1abecc5a737b0e21751ddbabf9df2 (patch)
tree93320a0e21c1f13e936ccac66d250b28fa87acc1 /cgit.c
parentCGIT 0.8.2.1 (diff)
downloadcgit-pink-8a631b1173b1abecc5a737b0e21751ddbabf9df2.tar.gz
cgit-pink-8a631b1173b1abecc5a737b0e21751ddbabf9df2.zip
ui-tag.c: do not segfault when id is missing from query-string
The purpose of the tag page is to print info about a specific tag,
but if no tag was specified on the query-string cgit used to segfault.

With this patch, cgit will fallback to the value of the 'h' parameter
instead (which is never NULL due to prepare_repo_cmd() in cgit.c).

It will now also verify that the specified tagname is in fact a valid
ref in the 'refs/tags/' namespace, i.e. specifying 'id=master' will
trigger a 'Bad tag reference' error.

Noticed-by: Eric Wong <normalperson@yhbt.net>
Signed-off-by: Lars Hjemli <hjemli@gmail.com>
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