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

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Hi Thorsten,

On 31/03/2023 12:09, Thorsten Leemhuis wrote:
> 
> 
> 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)

OK thank you. Sorry I didn't get that. Indeed, it should be enough to
just check for the tags, not for the "http(s)://" part.

Cheers,
Matt
-- 
Tessares | Belgium | Hybrid Access Solutions
www.tessares.net



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