-# Copyright (C) 2014, Eric Wong <normalperson@yhbt.net> and all contributors
-# License: AGPLv3 or later (https://www.gnu.org/licenses/agpl-3.0.txt)
+# Copyright (C) 2014-2018 all contributors <meta@public-inbox.org>
+# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
+#
+# Used throughout the project for reading configuration
+#
+# Note: I hate camelCase; but git-config(1) uses it, but it's better
+# than alllowercasewithoutunderscores, so use lc('configKey') where
+# applicable for readability
+
package PublicInbox::Config;
use strict;
use warnings;
+require PublicInbox::Inbox;
+use PublicInbox::Spawn qw(popen_rd);
+
+sub _array ($) { ref($_[0]) eq 'ARRAY' ? $_[0] : [ $_[0] ] }
# returns key-value pairs of config directives in a hash
+# if keys may be multi-value, the value is an array ref containing all values
sub new {
my ($class, $file) = @_;
+ $file = default_file() unless defined($file);
+ $file = ref $file ? $file : git_config_dump($file);
+ my $self = bless $file, $class;
+
+ # caches
+ $self->{-by_addr} ||= {};
+ $self->{-by_name} ||= {};
+ $self->{-by_newsgroup} ||= {};
+ $self->{-no_obfuscate} ||= {};
+ $self->{-limiters} ||= {};
+ $self->{-code_repos} ||= {}; # nick => PublicInbox::Git object
+ $self->{-cgitrc_unparsed} = $self->{'publicinbox.cgitrc'};
- local $ENV{GIT_CONFIG} = $file;
+ if (my $no = delete $self->{'publicinbox.noobfuscate'}) {
+ $no = _array($no);
+ my @domains;
+ foreach my $n (@$no) {
+ my @n = split(/\s+/, $n);
+ foreach (@n) {
+ if (/\S+@\S+/) { # full address
+ $self->{-no_obfuscate}->{lc $_} = 1;
+ } else {
+ # allow "example.com" or "@example.com"
+ s/\A@//;
+ push @domains, quotemeta($_);
+ }
+ }
+ }
+ my $nod = join('|', @domains);
+ $self->{-no_obfuscate_re} = qr/(?:$nod)\z/i;
+ }
+ if (my $css = delete $self->{'publicinbox.css'}) {
+ $self->{css} = _array($css);
+ }
- my @cfg = `git config -l`;
- $? == 0 or die "git config -l failed: $?\n";
- chomp @cfg;
- my %rv = map { split(/=/, $_, 2) } @cfg;
- bless \%rv, $class;
+ $self;
}
sub lookup {
my ($self, $recipient) = @_;
my $addr = lc($recipient);
+ my $ibx = $self->{-by_addr}->{$addr};
+ return $ibx if $ibx;
+
my $pfx;
foreach my $k (keys %$self) {
- $k =~ /\A(publicinbox\.[A-Z0-9a-z-]+)\.address\z/ or next;
- (lc($self->{$k}) eq $addr) or next;
- $pfx = $1;
- last;
+ $k =~ m!\A(publicinbox\.[^/]+)\.address\z! or next;
+ my $v = $self->{$k};
+ if (ref($v) eq "ARRAY") {
+ foreach my $alias (@$v) {
+ (lc($alias) eq $addr) or next;
+ $pfx = $1;
+ last;
+ }
+ } else {
+ (lc($v) eq $addr) or next;
+ $pfx = $1;
+ last;
+ }
}
-
defined $pfx or return;
+ _fill($self, $pfx);
+}
+
+sub lookup_name ($$) {
+ my ($self, $name) = @_;
+ $self->{-by_name}->{$name} || _fill($self, "publicinbox.$name");
+}
+
+sub each_inbox {
+ my ($self, $cb) = @_;
+ if (my $section_order = $self->{-section_order}) {
+ foreach my $section (@$section_order) {
+ next if $section !~ m!\Apublicinbox\.([^/]+)\z!;
+ $self->{"publicinbox.$1.mainrepo"} or next;
+ my $ibx = lookup_name($self, $1) or next;
+ $cb->($ibx);
+ }
+ } else {
+ my %seen;
+ foreach my $k (keys %$self) {
+ $k =~ m!\Apublicinbox\.([^/]+)\.mainrepo\z! or next;
+ next if $seen{$1};
+ $seen{$1} = 1;
+ my $ibx = lookup_name($self, $1) or next;
+ $cb->($ibx);
+ }
+ }
+}
+
+sub lookup_newsgroup {
+ my ($self, $ng) = @_;
+ $ng = lc($ng);
+ my $ibx = $self->{-by_newsgroup}->{$ng};
+ return $ibx if $ibx;
+
+ foreach my $k (keys %$self) {
+ $k =~ m!\A(publicinbox\.[^/]+)\.newsgroup\z! or next;
+ my $v = $self->{$k};
+ my $pfx = $1;
+ if ($v eq $ng) {
+ $ibx = _fill($self, $pfx);
+ return $ibx;
+ }
+ }
+ undef;
+}
+
+sub limiter {
+ my ($self, $name) = @_;
+ $self->{-limiters}->{$name} ||= do {
+ require PublicInbox::Qspawn;
+ my $max = $self->{"publicinboxlimiter.$name.max"} || 1;
+ my $limiter = PublicInbox::Qspawn::Limiter->new($max);
+ $limiter->setup_rlimit($name, $self);
+ $limiter;
+ };
+}
+
+sub config_dir { $ENV{PI_DIR} || "$ENV{HOME}/.public-inbox" }
+
+sub default_file {
+ my $f = $ENV{PI_CONFIG};
+ return $f if defined $f;
+ config_dir() . '/config';
+}
+
+sub git_config_dump {
+ my ($file) = @_;
+ my (%section_seen, @section_order);
+ return {} unless -e $file;
+ my @cmd = (qw/git config/, "--file=$file", '-l');
+ my $cmd = join(' ', @cmd);
+ my $fh = popen_rd(\@cmd) or die "popen_rd failed for $file: $!\n";
+ my %rv;
+ local $/ = "\n";
+ while (defined(my $line = <$fh>)) {
+ chomp $line;
+ my ($k, $v) = split(/=/, $line, 2);
+
+ my ($section) = ($k =~ /\A(\S+)\.[^\.]+\z/);
+ unless (defined $section_seen{$section}) {
+ $section_seen{$section} = 1;
+ push @section_order, $section;
+ }
+
+ my $cur = $rv{$k};
+ if (defined $cur) {
+ if (ref($cur) eq "ARRAY") {
+ push @$cur, $v;
+ } else {
+ $rv{$k} = [ $cur, $v ];
+ }
+ } else {
+ $rv{$k} = $v;
+ }
+ }
+ close $fh or die "failed to close ($cmd) pipe: $?";
+ $rv{-section_order} = \@section_order;
- my %rv = map {
- $_ => $self->{"$pfx.$_"}
- } (qw(mainrepo failrepo description address));
\%rv;
}
+sub valid_inbox_name ($) {
+ my ($name) = @_;
+
+ # Similar rules found in git.git/remote.c::valid_remote_nick
+ # and git.git/refs.c::check_refname_component
+ # We don't reject /\.lock\z/, however, since we don't lock refs
+ if ($name eq '' || $name =~ /\@\{/ ||
+ $name =~ /\.\./ || $name =~ m![/:\?\[\]\^~\s\f[:cntrl:]\*]! ||
+ $name =~ /\A\./ || $name =~ /\.\z/) {
+ return 0;
+ }
+
+ # Note: we allow URL-unfriendly characters; users may configure
+ # non-HTTP-accessible inboxes
+ 1;
+}
+
+# XXX needs testing for cgit compatibility
+# cf. cgit/scan-tree.c::add_repo
+sub cgit_repo_merge ($$$) {
+ my ($self, $base, $repo) = @_;
+ my $path = $repo->{dir};
+ if (defined(my $se = $self->{-cgit_strict_export})) {
+ return unless -e "$path/$se";
+ }
+ return if -e "$path/noweb";
+ # $repo = { url => 'foo.git', dir => '/path/to/foo.git' }
+ my $rel = $repo->{url};
+ unless (defined $rel) {
+ my $off = index($path, $base, 0);
+ if ($off != 0) {
+ $rel = $path;
+ } else {
+ $rel = substr($path, length($base) + 1);
+ }
+
+ $rel =~ s!/\.git\z!! or
+ $rel =~ s!/+\z!!;
+
+ $self->{-cgit_remove_suffix} and
+ $rel =~ s!/?\.git\z!!;
+ }
+ $self->{"coderepo.$rel.dir"} ||= $path;
+ $self->{"coderepo.$rel.cgiturl"} ||= $rel;
+}
+
+sub is_git_dir ($) {
+ my ($git_dir) = @_;
+ -d "$git_dir/objects" && -f "$git_dir/HEAD";
+}
+
+# XXX needs testing for cgit compatibility
+sub scan_path_coderepo {
+ my ($self, $base, $path) = @_;
+ opendir(my $dh, $path) or do {
+ warn "error opening directory: $path\n";
+ return
+ };
+ my $git_dir = $path;
+ if (is_git_dir($git_dir) || is_git_dir($git_dir .= '/.git')) {
+ my $repo = { dir => $git_dir };
+ cgit_repo_merge($self, $base, $repo);
+ return;
+ }
+ while (defined(my $dn = readdir $dh)) {
+ next if $dn eq '.' || $dn eq '..';
+ if (index($dn, '.') == 0 && !$self->{-cgit_scan_hidden_path}) {
+ next;
+ }
+ my $dir = "$path/$dn";
+ scan_path_coderepo($self, $base, $dir) if -d $dir;
+ }
+}
+
+sub scan_tree_coderepo ($$) {
+ my ($self, $path) = @_;
+ scan_path_coderepo($self, $path, $path);
+}
+
+sub scan_projects_coderepo ($$$) {
+ my ($self, $list, $path) = @_;
+ open my $fh, '<', $list or do {
+ warn "failed to open cgit projectlist=$list: $!\n";
+ return;
+ };
+ foreach (<$fh>) {
+ chomp;
+ scan_path_coderepo($self, $path, "$path/$_");
+ }
+}
+
+sub parse_cgitrc {
+ my ($self, $cgitrc, $nesting) = @_;
+ if ($nesting == 0) {
+ # defaults:
+ my %s = map { $_ => 1 } qw(/cgit.css /cgit.png
+ /favicon.ico /robots.txt);
+ $self->{-cgit_static} = \%s;
+ }
+
+ # same limit as cgit/configfile.c::parse_configfile
+ return if $nesting > 8;
+
+ open my $fh, '<', $cgitrc or do {
+ warn "failed to open cgitrc=$cgitrc: $!\n";
+ return;
+ };
+
+ # FIXME: this doesn't support macro expansion via $VARS, yet
+ my $repo;
+ foreach (<$fh>) {
+ chomp;
+ if (m!\Arepo\.url=(.+?)/*\z!) {
+ my $nick = $1;
+ cgit_repo_merge($self, $repo->{dir}, $repo) if $repo;
+ $repo = { url => $nick };
+ } elsif (m!\Arepo\.path=(.+)\z!) {
+ if (defined $repo) {
+ $repo->{dir} = $1;
+ } else {
+ warn "$_ without repo.url\n";
+ }
+ } elsif (m!\Ainclude=(.+)\z!) {
+ parse_cgitrc($self, $1, $nesting + 1);
+ } elsif (m!\A(scan-hidden-path|remove-suffix)=([0-9]+)\z!) {
+ my ($k, $v) = ($1, $2);
+ $k =~ tr/-/_/;
+ $self->{"-cgit_$k"} = $v;
+ } elsif (m!\A(project-list|strict-export)=(.+)\z!) {
+ my ($k, $v) = ($1, $2);
+ $k =~ tr/-/_/;
+ $self->{"-cgit_$k"} = $v;
+ } elsif (m!\Ascan-path=(.+)\z!) {
+ if (defined(my $list = $self->{-cgit_project_list})) {
+ scan_projects_coderepo($self, $list, $1);
+ } else {
+ scan_tree_coderepo($self, $1);
+ }
+ } elsif (m!\A(?:css|favicon|logo|repo\.logo)=(/.+)\z!) {
+ # absolute paths for static files via PublicInbox::Cgit
+ $self->{-cgit_static}->{$1} = 1;
+ }
+ }
+ cgit_repo_merge($self, $repo->{dir}, $repo) if $repo;
+}
+
+# parse a code repo
+# Only git is supported at the moment, but SVN and Hg are possibilities
+sub _fill_code_repo {
+ my ($self, $nick) = @_;
+ my $pfx = "coderepo.$nick";
+
+ # TODO: support gitweb and other repository viewers?
+ if (defined(my $cgitrc = delete $self->{-cgitrc_unparsed})) {
+ parse_cgitrc($self, $cgitrc, 0);
+ }
+ my $dir = $self->{"$pfx.dir"}; # aka "GIT_DIR"
+ unless (defined $dir) {
+ warn "$pfx.dir unset\n";
+ return;
+ }
+
+ my $git = PublicInbox::Git->new($dir);
+ foreach my $t (qw(blob commit tree tag)) {
+ $git->{$t.'_url_format'} =
+ _array($self->{lc("$pfx.${t}UrlFormat")});
+ }
+
+ if (my $cgits = $self->{lc("$pfx.cgitUrl")}) {
+ $git->{cgit_url} = $cgits = _array($cgits);
+
+ # cgit supports "/blob/?id=%s", but it's only a plain-text
+ # display and requires an unabbreviated id=
+ foreach my $t (qw(blob commit tag)) {
+ $git->{$t.'_url_format'} ||= map {
+ "$_/$t/?id=%s"
+ } @$cgits;
+ }
+ }
+
+ $git;
+}
+
+sub _fill {
+ my ($self, $pfx) = @_;
+ my $ibx = {};
+
+ foreach my $k (qw(mainrepo filter url newsgroup
+ infourl watch watchheader httpbackendmax
+ replyto feedmax nntpserver indexlevel)) {
+ my $v = $self->{"$pfx.$k"};
+ $ibx->{$k} = $v if defined $v;
+ }
+ foreach my $k (qw(obfuscate)) {
+ my $v = $self->{"$pfx.$k"};
+ defined $v or next;
+ if ($v =~ /\A(?:false|no|off|0)\z/) {
+ $ibx->{$k} = 0;
+ } elsif ($v =~ /\A(?:true|yes|on|1)\z/) {
+ $ibx->{$k} = 1;
+ } else {
+ warn "Ignoring $pfx.$k=$v in config, not boolean\n";
+ }
+ }
+ # TODO: more arrays, we should support multi-value for
+ # more things to encourage decentralization
+ foreach my $k (qw(address altid nntpmirror coderepo hide)) {
+ if (defined(my $v = $self->{"$pfx.$k"})) {
+ $ibx->{$k} = _array($v);
+ }
+ }
+
+ return unless $ibx->{mainrepo};
+ my $name = $pfx;
+ $name =~ s/\Apublicinbox\.//;
+
+ if (!valid_inbox_name($name)) {
+ warn "invalid inbox name: '$name'\n";
+ return;
+ }
+
+ $ibx->{name} = $name;
+ $ibx->{-pi_config} = $self;
+ $ibx = PublicInbox::Inbox->new($ibx);
+ foreach (@{$ibx->{address}}) {
+ my $lc_addr = lc($_);
+ $self->{-by_addr}->{$lc_addr} = $ibx;
+ $self->{-no_obfuscate}->{$lc_addr} = 1;
+ }
+ if (my $ng = $ibx->{newsgroup}) {
+ $self->{-by_newsgroup}->{$ng} = $ibx;
+ }
+ $self->{-by_name}->{$name} = $ibx;
+ if ($ibx->{obfuscate}) {
+ $ibx->{-no_obfuscate} = $self->{-no_obfuscate};
+ $ibx->{-no_obfuscate_re} = $self->{-no_obfuscate_re};
+ each_inbox($self, sub {}); # noop to populate -no_obfuscate
+ }
+
+ if (my $ibx_code_repos = $ibx->{coderepo}) {
+ my $code_repos = $self->{-code_repos};
+ my $repo_objs = $ibx->{-repo_objs} = [];
+ foreach my $nick (@$ibx_code_repos) {
+ my @parts = split(m!/!, $nick);
+ my $valid = 0;
+ $valid += valid_inbox_name($_) foreach (@parts);
+ $valid == scalar(@parts) or next;
+
+ my $repo = $code_repos->{$nick} ||=
+ _fill_code_repo($self, $nick);
+ push @$repo_objs, $repo if $repo;
+ }
+ }
+
+ $ibx
+}
+
1;