From 853634f298a19bc8cd97189e8cc318f79fd0a3ad Mon Sep 17 00:00:00 2001 From: Johannes Schauer Marin Rodrigues Date: Mon, 16 Jan 2023 15:13:39 +0100 Subject: [PATCH] allow empty sources.list entries --- coverage.txt | 2 + mmdebstrap | 122 +++++++++++++++++++++++---------------- tests/empty-sources.list | 8 +++ 3 files changed, 82 insertions(+), 50 deletions(-) create mode 100644 tests/empty-sources.list diff --git a/coverage.txt b/coverage.txt index c4900ab..5c51bf4 100644 --- a/coverage.txt +++ b/coverage.txt @@ -362,3 +362,5 @@ Variants: essential apt minbase Test: apt-patterns Test: apt-patterns-custom + +Test: empty-sources.list diff --git a/mmdebstrap b/mmdebstrap index 967c7cd..da7adf6 100755 --- a/mmdebstrap +++ b/mmdebstrap @@ -2072,7 +2072,7 @@ sub run_setup() { } # write /etc/apt/sources.list and files in /etc/apt/sources.list.d/ - { + if (scalar @{$options->{sourceslists}} > 0) { my $firstentry = $options->{sourceslists}->[0]; # if the first sources.list entry is of one-line type and without # explicit filename, then write out an actual /etc/apt/sources.list @@ -2299,6 +2299,9 @@ sub run_update() { close $fh; if ($indextargets eq '') { warning("apt-get indextargets output is empty"); + if (scalar @{ $options->{sourceslists} } == 0) { + warning "no known apt sources.list entry"; + } for my $list (@{ $options->{sourceslists} }) { if (defined $list->{fname}) { info("Filename: $list->{fname}"); @@ -5082,17 +5085,21 @@ sub main() { ## no critic (InputOutput::ProhibitExplicitStdin) ; }; - my $type = guess_sources_format($content); - if (!defined $type - || ($type ne "deb822" and $type ne "one-line")) { - error "cannot determine sources.list format"; + if ($content eq "") { + warning "sources.list from standard input is empty"; + } else { + my $type = guess_sources_format($content); + if (!defined $type + || ($type ne "deb822" and $type ne "one-line")) { + error "cannot determine sources.list format"; + } + push @{$sourceslists}, + { + type => $type, + fname => undef, + content => $content, + }; } - push @{$sourceslists}, - { - type => $type, - fname => undef, - content => $content, - }; } else { my @components = (); foreach my $comp (@{ $options->{components} }) { @@ -5112,9 +5119,11 @@ sub main() { } } my $compstr = join " ", @components; - # if the currently selected apt keyrings do not contain the - # necessary key material for the chosen suite, then attempt adding - # a signed-by option + # From the suite name we can maybe infer which key we need. If we + # can infer this information, then we need to check whether the + # currently running apt actually trusts this key or not. If it + # doesn't, then we need to add a signed-by line to the sources.list + # entry. my $signedby = ''; my %suite_by_vendor = get_suite_by_vendor(); my $gpgproc = sub { @@ -5251,26 +5260,32 @@ sub main() { ## no critic (InputOutput::ProhibitExplicitStdin) ; }; - my $type = guess_sources_format($content); - if (!defined $type - || ($type ne 'deb822' and $type ne 'one-line')) { - error "cannot determine sources.list format"; - } - # if last entry is of same type and without filename, - # then append - if ( scalar @{$sourceslists} > 0 - && $sourceslists->[-1]{type} eq $type - && !defined $sourceslists->[-1]{fname}) { - $sourceslists->[-1]{content} - .= ($type eq 'one-line' ? "\n" : "\n\n") - . $content; + if ($content eq "") { + warning + "sources.list from standard input is empty"; } else { - push @{$sourceslists}, - { - type => $type, - fname => undef, - content => $content, - }; + my $type = guess_sources_format($content); + if (!defined $type + || ($type ne 'deb822' and $type ne 'one-line')) + { + error "cannot determine sources.list format"; + } + # if last entry is of same type and without filename, + # then append + if ( scalar @{$sourceslists} > 0 + && $sourceslists->[-1]{type} eq $type + && !defined $sourceslists->[-1]{fname}) { + $sourceslists->[-1]{content} + .= ($type eq 'one-line' ? "\n" : "\n\n") + . $content; + } else { + push @{$sourceslists}, + { + type => $type, + fname => undef, + content => $content, + }; + } } } elsif ($arg =~ /^deb(-src)? /) { my $content = "$arg\n"; @@ -5315,24 +5330,31 @@ sub main() { $content .= $line; } close $fh; - my $type = undef; - if ($arg =~ /\.list$/) { - $type = 'one-line'; - } elsif ($arg =~ /\.sources$/) { - $type = 'deb822'; + if ($content eq "") { + warning "$arg is empty"; } else { - $type = guess_sources_format($content); + my $type = undef; + if ($arg =~ /\.list$/) { + $type = 'one-line'; + } elsif ($arg =~ /\.sources$/) { + $type = 'deb822'; + } else { + $type = guess_sources_format($content); + } + if (!defined $type + || ($type ne 'deb822' and $type ne 'one-line')) + { + error "cannot determine sources.list format"; + } + push @{$sourceslists}, + { + type => $type, + fname => basename($arg), + content => $content, + }; } - if (!defined $type - || ($type ne 'deb822' and $type ne 'one-line')) { - error "cannot determine sources.list format"; - } - push @{$sourceslists}, - { - type => $type, - fname => basename($arg), - content => $content, - }; + } elsif ($arg eq '') { + # empty } else { error "invalid mirror: $arg"; } @@ -5351,7 +5373,7 @@ sub main() { } } if (scalar @{$sourceslists} == 0) { - error "empty apt sources.list"; + warning "empty apt sources.list"; } debug("sources list entries:"); for my $list (@{$sourceslists}) { diff --git a/tests/empty-sources.list b/tests/empty-sources.list new file mode 100644 index 0000000..bf384f3 --- /dev/null +++ b/tests/empty-sources.list @@ -0,0 +1,8 @@ +#!/bin/sh +set -eu +export LC_ALL=C.UTF-8 +trap "rm -f /tmp/debian-chroot.tar" EXIT INT TERM +printf '' | {{ CMD }} --mode={{ MODE }} --variant=apt \ + --setup-hook='echo "deb {{ MIRROR }} {{ DIST }} main" > "$1"/etc/apt/sources.list' \ + {{ DIST }} /tmp/debian-chroot.tar - +tar -tf /tmp/debian-chroot.tar | sort | diff -u tar1.txt -