From 6c20c8ed2cb9ab69a1a57ccb2b9b79969a808321 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 7 Apr 2024 17:38:56 +0200
Subject: Adding upstream version 5.2.15.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 support/checkbashisms | 170 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 170 insertions(+)
 create mode 100755 support/checkbashisms

(limited to 'support/checkbashisms')

diff --git a/support/checkbashisms b/support/checkbashisms
new file mode 100755
index 0000000..ea6cc14
--- /dev/null
+++ b/support/checkbashisms
@@ -0,0 +1,170 @@
+#! /usr/bin/perl -w
+
+# This script is essentially copied from /usr/share/lintian/checks/scripts,
+# which is:
+#   Copyright (C) 1998 Richard Braakman
+#   Copyright (C) 2002 Josip Rodin
+# This version is
+#   Copyright (C) 2003 Julian Gilbey
+# 
+#   This program is free software: you can redistribute it and/or modify
+#   it under the terms of the GNU General Public License as published by
+#   the Free Software Foundation, either version 3 of the License, or
+#   (at your option) any later version.
+#
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#   GNU General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+use strict;
+
+(my $progname = $0) =~ s|.*/||;
+
+my $usage = <<"EOF";
+Usage: $progname [-n] script ...
+   or: $progname --help
+   or: $progname --version
+This script performs basic checks for the presence of bashisms
+in /bin/sh scripts.
+EOF
+
+my $version = <<"EOF";
+This is $progname, from the Debian devscripts package, version 2.10.7ubuntu5
+This code is copyright 2003 by Julian Gilbey <jdg\@debian.org>,
+based on original code which is copyright 1998 by Richard Braakman
+and copyright 2002 by Josip Rodin.
+This program comes with ABSOLUTELY NO WARRANTY.
+You are free to redistribute this code under the terms of the
+GNU General Public License, version 3, or (at your option) any later version.
+EOF
+
+my $opt_echo = 0;
+
+##
+## handle command-line options
+##
+if (int(@ARGV) == 0 or $ARGV[0] =~ /^(--help|-h)$/) { print $usage; exit 0; }
+if (@ARGV and $ARGV[0] =~ /^(--version|-v)$/) { print $version; exit 0; }
+if (@ARGV and $ARGV[0] =~ /^(--newline|-n)$/) { $opt_echo = 1; }
+
+
+my $status = 0;
+
+foreach my $filename (@ARGV) {
+    if ($filename eq '-n' or $filename eq '--newline') {
+	next;
+    }
+    unless (open C, "$filename") {
+	warn "cannot open script $filename for reading: $!\n";
+	$status |= 2;
+	next;
+    }
+
+    my $cat_string = "";
+
+    while (<C>) {
+	if ($. == 1) { # This should be an interpreter line
+	    if (m,^\#!\s*(\S+),) {
+		my $interpreter = $1;
+		if ($interpreter =~ m,/bash$,) {
+		    warn "script $filename is already a bash script; skipping\n";
+		    $status |= 2;
+		    last;  # end this file
+		}
+		elsif ($interpreter !~ m,/(sh|ash|dash)$,) {
+		    warn "script $filename does not appear to be a /bin/sh script; skipping\n";
+		    $status |= 2;
+		    last;
+		}
+	    } else {
+		warn "script $filename does not appear to have a \#! interpreter line;\nyou may get strange results\n";
+	    }
+	}
+
+	next if m,^\s*\#,;  # skip comment lines
+	chomp;
+	my $orig_line = $_;
+
+	s/(?<!\\)\#.*$//;   # eat comments
+
+	if (m/(?:^|\s+)cat\s*\<\<\s*(\w+)/) {
+	    $cat_string = $1;
+	}
+	elsif ($cat_string ne "" and m/^$cat_string/) {
+	    $cat_string = "";
+	}
+	my $within_another_shell = 0;
+	if (m,(^|\s+)((/usr)?/bin/)?((b|d)?a|k|z|t?c)sh\s+-c\s*.+,) {
+	    $within_another_shell = 1;
+	}
+	# if cat_string is set, we are in a HERE document and need not
+	# check for things
+	if ($cat_string eq "" and !$within_another_shell) {
+	    my $found = 0;
+	    my $match = '';
+	    my $explanation = '';
+	    my %bashisms = (
+		'(?:^|\s+)function\s+\w+' =>   q<'function' is useless>,
+		'(?:^|\s+)select\s+\w+' =>     q<'select' is not POSIX>,
+		'(?:^|\s+)source\s+(?:\.\/|\/|\$)[^\s]+' =>
+		                               q<should be '.', not 'source'>,
+		'(\[|test|-o|-a)\s*[^\s]+\s+==\s' =>
+		                               q<should be 'b = a'>,
+		'\s\|\&' =>                    q<pipelining is not POSIX>,
+		'\$\[\w+\]' =>                 q<arithmetic not allowed>,
+		'\$\{\w+\:\d+(?::\d+)?\}' =>   q<${foo:3[:1]}>,
+		'\$\{!\w+[@*]\}' =>            q<${!prefix[*|@]>,
+		'\$\{!\w+\}' =>                q<${!name}>,
+		'\$\{\w+(/.+?){1,2}\}' =>      q<${parm/?/pat[/str]}>,
+		'[^\\\]\{([^\s]+?,)+[^\\\}\s]+\}' =>
+		                               q<brace expansion>,
+		'(?:^|\s+)\w+\[\d+\]=' =>      q<bash arrays, H[0]>,
+		'\$\{\#?\w+\[[0-9\*\@]+\]\}' => q<bash arrays, ${name[0|*|@]}>,
+		'(?:^|\s+)(read\s*(?:;|$))' => q<read without variable>,
+		'\$\(\([A-Za-z]' => q<cnt=$((cnt + 1)) does not work in dash>,
+		'echo\s+-[e]' =>               q<echo -e>,
+		'exec\s+-[acl]' =>             q<exec -c/-l/-a name>,
+		'\blet\s' =>                   q<let ...>,
+		'\$RANDOM\b' =>                q<$RANDOM>,
+		'(?<!\$)\(\(' =>               q<'((' should be '$(('>,
+	    );
+
+	    if ($opt_echo) {
+		$bashisms{'echo\s+-[n]'} = 'q<echo -n>';
+	    }
+
+	    while (my ($re,$expl) = each %bashisms) {
+		if (m/($re)/) {
+		    $found = 1;
+		    $match = $1;
+		    $explanation = $expl;
+		    last;
+		}
+	    }
+	    # since this test is ugly, I have to do it by itself
+	    # detect source (.) trying to pass args to the command it runs
+	    if (not $found and m/^\s*(\.\s+[^\s]+\s+([^\s]+))/) {
+		if ($2 eq '&&' || $2 eq '||') {
+		    # everything is ok
+		    ;
+		} else {
+		    $found = 1;
+		    $match = $1;
+		}
+	    }
+	    unless ($found == 0) {
+		warn "possible bashism in $filename line $. ($explanation):\n$orig_line\n";
+		$status |= 1;
+	    }
+	}
+    }
+
+    close C;
+}
+
+exit $status;
-- 
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