mirror of
https://github.com/moparisthebest/curl
synced 2024-11-17 23:15:08 -05:00
33ee411848
Follow-up to e8423f9ce1 with discussionis in
https://github.com/bagder/curl/pull/258
This check scans for fopen() with a mode string without 'b' present, as
it may indicate that an FOPEN_* define should rather be used.
283 lines
7.8 KiB
Perl
Executable File
283 lines
7.8 KiB
Perl
Executable File
#!/usr/bin/perl
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#***************************************************************************
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# _ _ ____ _
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# Project ___| | | | _ \| |
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# / __| | | | |_) | |
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# | (__| |_| | _ <| |___
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# \___|\___/|_| \_\_____|
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#
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# Copyright (C) 2011 - 2015, Daniel Stenberg, <daniel@haxx.se>, et al.
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#
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# This software is licensed as described in the file COPYING, which
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# you should have received as part of this distribution. The terms
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# are also available at http://curl.haxx.se/docs/copyright.html.
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#
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# You may opt to use, copy, modify, merge, publish, distribute and/or sell
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# copies of the Software, and permit persons to whom the Software is
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# furnished to do so, under the terms of the COPYING file.
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#
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# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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# KIND, either express or implied.
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#
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###########################################################################
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my $max_column = 79;
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my $indent = 2;
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my $warnings;
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my $errors;
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my $supressed; # whitelisted problems
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my $file;
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my $dir=".";
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my $wlist;
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my $windows_os = $^O eq 'MSWin32' || $^O eq 'msys' || $^O eq 'cygwin';
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my %whitelist;
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sub readwhitelist {
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open(W, "<$dir/checksrc.whitelist");
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my @all=<W>;
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for(@all) {
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$windows_os ? $_ =~ s/\r?\n$// : chomp;
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$whitelist{$_}=1;
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}
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close(W);
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}
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sub checkwarn {
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my ($num, $col, $file, $line, $msg, $error) = @_;
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if($whitelist{$line}) {
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$supressed++;
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return;
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}
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my $w=$error?"error":"warning";
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if($w) {
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$warnings++;
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}
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else {
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$errors++;
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}
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$col++;
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print "$file:$num:$col: $w: $msg\n";
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print " $line\n";
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if($col < 80) {
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my $pref = (' ' x $col);
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print "${pref}^\n";
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}
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}
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$file = shift @ARGV;
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while(1) {
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if($file =~ /-D(.*)/) {
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$dir = $1;
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$file = shift @ARGV;
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next;
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}
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elsif($file =~ /-W(.*)/) {
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$wlist .= " $1 ";
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$file = shift @ARGV;
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next;
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}
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last;
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}
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if(!$file) {
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print "checksrc.pl [option] <file1> [file2] ...\n";
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print " Options:\n";
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print " -D[DIR] Directory to prepend file names\n";
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print " -W[file] Whitelist the given file - ignore all its flaws\n";
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exit;
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}
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readwhitelist();
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do {
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if("$wlist" !~ / $file /) {
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my $fullname = $file;
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$fullname = "$dir/$file" if ($fullname !~ '^\.?\.?/');
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scanfile($fullname);
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}
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$file = shift @ARGV;
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} while($file);
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sub scanfile {
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my ($file) = @_;
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my $line = 1;
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my $prevl;
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my $l;
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open(R, "<$file") || die "failed to open $file";
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my $copyright=0;
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while(<R>) {
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$windows_os ? $_ =~ s/\r?\n$// : chomp;
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my $l = $_;
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my $column = 0;
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# check for a copyright statement
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if(!$copyright && ($l =~ /copyright .* \d\d\d\d/i)) {
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$copyright=1;
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}
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# detect long lines
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if(length($l) > $max_column) {
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checkwarn($line, length($l), $file, $l, "Longer than $max_column columns");
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}
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# detect TAB characters
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if($l =~ /^(.*)\t/) {
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checkwarn($line, length($1), $file, $l, "Contains TAB character", 1);
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}
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# detect trailing white space
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if($l =~ /^(.*)[ \t]+\z/) {
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checkwarn($line, length($1), $file, $l, "Trailing whitespace");
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}
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# check spaces after for/if/while
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if($l =~ /^(.*)(for|if|while) \(/) {
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if($1 =~ / *\#/) {
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# this is a #if, treat it differently
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}
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else {
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checkwarn($line, length($1)+length($2), $file, $l,
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"$2 with space");
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}
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}
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# check spaces after open paren after for/if/while
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if($l =~ /^(.*)(for|if|while)\( /) {
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if($1 =~ / *\#/) {
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# this is a #if, treat it differently
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}
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else {
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checkwarn($line, length($1)+length($2)+1, $file, $l,
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"$2 with space first in condition");
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}
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}
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# check for "return(" without space
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if($l =~ /^(.*)return\(/) {
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if($1 =~ / *\#/) {
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# this is a #if, treat it differently
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}
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else {
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checkwarn($line, length($1)+6, $file, $l,
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"return without space before paren");
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}
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}
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# check for comma without space
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if($l =~ /^(.*),[^ \n]/) {
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my $pref=$1;
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my $ign=0;
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if($pref =~ / *\#/) {
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# this is a #if, treat it differently
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$ign=1;
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}
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elsif($pref =~ /\/\*/) {
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# this is a comment
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$ign=1;
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}
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elsif($pref =~ /[\"\']/) {
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$ign = 1;
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# There is a quote here, figure out whether the comma is
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# within a string or '' or not.
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if($pref =~ /\"/) {
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# withing a string
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}
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elsif($pref =~ /\'$/) {
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# a single letter
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}
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else {
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$ign = 0;
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}
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}
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if(!$ign) {
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checkwarn($line, length($pref)+1, $file, $l,
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"comma without following space");
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}
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}
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# check for "} else"
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if($l =~ /^(.*)\} *else/) {
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checkwarn($line, length($1), $file, $l, "else after closing brace on same line");
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}
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# check for "){"
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if($l =~ /^(.*)\)\{/) {
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checkwarn($line, length($1)+1, $file, $l, "missing space after close paren");
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}
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# check for space before the semicolon last in a line
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if($l =~ /^(.*[^ ].*) ;$/) {
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checkwarn($line, length($1), $file, $l, "space before last semicolon");
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}
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# scan for use of banned functions
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if($l =~ /^(.*\W)(sprintf|vsprintf|strcat|strncat|gets)\s*\(/) {
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checkwarn($line, length($1), $file, $l,
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"use of $2 is banned");
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}
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# scan for use of non-binary fopen without the macro
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if($l =~ /^(.*\W)fopen\s*\([^"]*\"([^"]*)/) {
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my $mode = $2;
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if($mode !~ /b/) {
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checkwarn($line, length($1), $file, $l,
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"use of non-binary fopen without FOPEN_* macro");
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}
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}
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# check for open brace first on line but not first column
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# only alert if previous line ended with a close paren and wasn't a cpp
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# line
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if((($prevl =~ /\)\z/) && ($prevl !~ /^ *#/)) && ($l =~ /^( +)\{/)) {
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checkwarn($line, length($1), $file, $l, "badly placed open brace");
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}
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# if the previous line starts with if/while/for AND ends with an open
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# brace, check that this line is indented $indent more steps, if not
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# a cpp line
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if($prevl =~ /^( *)(if|while|for)\(.*\{\z/) {
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my $first = length($1);
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# this line has some character besides spaces
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if(($l !~ /^ *#/) && ($l =~ /^( *)[^ ]/)) {
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my $second = length($1);
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my $expect = $first+$indent;
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if($expect != $second) {
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my $diff = $second - $first;
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checkwarn($line, length($1), $file, $l,
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"not indented $indent steps, uses $diff)");
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}
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}
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}
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$line++;
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$prevl = $l;
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}
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if(!$copyright) {
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checkwarn(1, 0, $file, "", "Missing copyright statement", 1);
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}
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close(R);
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}
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if($errors || $warnings) {
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printf "checksrc: %d errors and %d warnings\n", $errors, $warnings;
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exit 5; # return failure
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}
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