Re: [PATCH v3 4/4] checkpatch: check for misuse of the link tags

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On 31.03.23 11:44, Matthieu Baerts wrote:
> Hi Thorsten,
> 
> On 31/03/2023 10:57, Thorsten Leemhuis wrote:
>> On 30.03.23 20:13, Matthieu Baerts wrote:
>>> "Link:" and "Closes:" tags have to be used with public URLs.
>>>
>>> It is difficult to make sure the link is public but at least we can
>>> verify the tag is followed by 'http(s):'.
>>>
>>> With that, we avoid such a tag that is not allowed [1]:
>>>
>>>   Closes: <number>
>>>
>>> Link: https://lore.kernel.org/linux-doc/CAHk-=wh0v1EeDV3v8TzK81nDC40=XuTdY2MCr0xy3m3FiBV3+Q@xxxxxxxxxxxxxx/ [1]
>>> Signed-off-by: Matthieu Baerts <matthieu.baerts@xxxxxxxxxxxx>
>>> [...]
>>> +# Check for misuse of the link tags
>>> +		if ($in_commit_log &&
>>> +		    $line =~ /^\s*(\w+:)\s*(\S+)/) {
>>> +			my $tag = $1;
>>> +			my $value = $2;
>>> +			if ($tag =~ /^$link_tags_search$/ && $value !~ /^https?:/) {
>>> +				WARN("COMMIT_LOG_WRONG_LINK",
>>> +				     "'$tag' should be followed by a public http(s) link\n" . $herecurr);
>>> +			}
>>> +		}
>>> +
>>
>> I must be missing something here, but it looks to me like this is
>> checked twice now. See this line in patch2 (which is changed there, but
>> the check itself remains):
>>
>>> } elsif ($rawlines[$linenr] !~ m{^link:\s*https?://}i) {
> 
> If I'm not mistaken, we had the following checks:
> 
> - after Reported-by, there is a link tag (Link:|Closes:)
>
> - (link tags can take more than 75 chars)
> - tags followed by "http(s)://" are restricted to link ones
> 
> Then not: link tags (Link:|Closes:) are followed by "http(s):".

Not in general, afaics -- and ensuring that is likely wise, so thx for
this. But for Link: and Closes: tags after a Reported-by it is already
checked, that's what I meant (and didn't communicate well, sorry). It's
just a detail, but might be wise to do this in patch 4:

- } elsif ($rawlines[$linenr] !~ m{^$link_tags_search\s*https?://}i) {
+ } elsif ($rawlines[$linenr] !~ m{^$link_tags_search}i) {

(that's a line changed in patch2)

Ciao, Thorsten








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