lkml.org 
[lkml]   [2020]   [Sep]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v2] checkpatch: extend author Signed-off-by check for split From: header
Date
Checkpatch did not handle cases where the author From: header
was split into multiple lines. The author identity could not
be resolved and checkpatch generated a false NO_AUTHOR_SIGN_OFF
warning.

A typical example is Commit e33bcbab16d1 ("tee: add support for
session's client UUID generation"). When checkpatch was run on
this commit, it displayed:

"WARNING:NO_AUTHOR_SIGN_OFF: Missing Signed-off-by: line by nominal
patch author ''"

This was due to split header lines not being handled properly and
the author himself wrote in Commit cd2614967d8b ("checkpatch: warn
if missing author Signed-off-by"):

"Split From: headers are not fully handled: only the first part
is compared."

Support split From: headers by correctly parsing the header
extension lines. RFC 2822, Section-2.2.3 stated that each extended
line must start with a WSP character (a space or htab). The solution
was therefore to concatenate the lines which start with a WSP to
get the correct long header.

Suggested-by: Joe Perches <joe@perches.com>
Link: https://lore.kernel.org/linux-kernel-mentees/f5d8124e54a50480b0a9fa638787bc29b6e09854.camel@perches.com/
Signed-off-by: Dwaipayan Ray <dwaipayanray1@gmail.com>
---
scripts/checkpatch.pl | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 504d2e431c60..9e65d21456f1 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -2661,6 +2661,10 @@ sub process {
# Check the patch for a From:
if (decode("MIME-Header", $line) =~ /^From:\s*(.*)/) {
$author = $1;
+ my $curline = $linenr;
+ while(defined($rawlines[$curline]) && ($rawlines[$curline++] =~ /^[ \t]\s*(.*)/)) {
+ $author .= $1;
+ }
$author = encode("utf8", $author) if ($line =~ /=\?utf-8\?/i);
$author =~ s/"//g;
$author = reformat_email($author);
--
2.27.0
\
 
 \ /
  Last update: 2020-09-20 11:17    [W:0.057 / U:1.164 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site