mdw@git.distorted.org.uk Git - userv-utils/blob - git-daemon/read-urlmap

   1 # -*- perl -*-
   2
   3 # uses:
   4 #     $specpath    whole path from caller, minus any leading /s
   5 #     $spechost    host from caller
   6 #
   7 # sets:
   8 #
   9 #  always:
  10 #     $uri
  11 #
  12 #  if match found for this host and path:
  13 #     $serve_user   username, or undef if no match (then other serve_* invalid)
  14 #     $serve_dir    directory as specified in config
  15 #     $serve_repo   subpath under $serve_dir _including_ leading /
  16 #
  17 #  for use by user's service program
  18 #     $repo_regexp
  19 #     $require_exportok
  20
  21 sub remain_path ($) {
  22     # return value matches {( / [^/]+ )+}x
  23     my ($vsubpath) = @_;
  24     syslog 'debug', sprintf "DEBUG remain_path %s $specpath",
  25                               (defined $vsubpath ? $vsubpath : '<undef>');
  26     return "/$specpath" if !defined $vsubpath;
  27     return "" if $vsubpath eq $specpath;
  28     return substr($specpath,length($vsubpath))
  29         if substr($specpath,0,length($vsubpath)+1) eq "$vsubpath/";
  30     return undef;
  31 }
  32
  33 fail "no config ??" unless @ARGV;
  34 fail "no specpath ??" unless length $specpath;
  35
  36 our $uri = "git://$spechost/$specpath";
  37 our $repo_regexp= '^/*(\\w[-+._0-9A-Za-z]*)$';  # stupid emacs ';
  38 our $check_export= 0;
  39
  40 our ($serve_user, $serve_dir, $serve_repo);
  41
  42 sub fexists ($) {
  43     my ($f) = @_;
  44     if (stat $f) {
  45         -f _ or fail "bad config $_ - not a file";
  46         return 1;
  47     } else {
  48         $!==&ENOENT or fail "bad config $_ - could not stat: $!";
  49         return 0;
  50     }
  51 }
  52
  53 @ARGV = grep { fexists($_) } @ARGV;
  54
  55 while (<>) {
  56
  57     s/^\s*//;
  58     s/\s+$//;
  59     next unless m/\S/;
  60     next if m/^\#/;
  61
  62     if (m{^ single-user \s+ (\S+?) (/\S*)? \s+ (\S+) (?: \s+ (\S+) )? $ }x) {
  63         my ($h,$v,$u,$d) = ($1,$2,$3,$4);
  64         next unless $h eq $spechost;
  65         $serve_repo= remain_path($v);
  66         next unless defined $serve_repo;
  67         $serve_user= $u;
  68         $serve_dir= $d;
  69         syslog 'debug', "DEBUG $ARGV:$. match".
  70             " $serve_user $serve_dir $serve_repo";
  71     } elsif (m{^ multi-user \s+ (\S+?) (/\S*)? \s+ (\S+) $ }x) {
  72         my ($h,$v,$d) = ($1,$2,$3);
  73         next unless $1 eq $spechost;
  74         $serve_repo= remain_path($v);
  75         next unless defined $serve_repo;
  76         syslog 'debug', "DEBUG $ARGV:$. perhaps $serve_repo";
  77         next unless $serve_repo =~ s{ ^/\~( [a-z][-+_0-9a-z]* )/ }{/}xi;
  78         $serve_user= $1;
  79         $serve_dir= $d;
  80         syslog 'debug', "DEBUG $ARGV:$. match".
  81             " $serve_user $serve_dir $serve_repo";
  82     } elsif (m{^ repo-regexp \s+ (\S.*) $ }x) {
  83         $repo_regexp= $1;
  84     } elsif (m{^ (no-)?require-git-daemon-export-ok $ }x) {
  85         $check_export= !defined $1;
  86     } else {
  87         fail "config syntax error at $ARGV:$.";
  88     }
  89 }
  90
  91 # end