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
  38 our $repo_regexp= '^(\\w[-+._0-9A-Za-z]*/?\.git)$';  # stupid emacs ';
  39 our $check_export= 0;
  40
  41 our ($serve_user, $serve_dir, $serve_repo);
  42
  43 sub fexists ($) {
  44     my ($f) = @_;
  45     if (stat $f) {
  46         -f _ or fail "bad config $_ - not a file";
  47         return 1;
  48     } else {
  49         $!==&ENOENT or fail "bad config $_ - could not stat: $!";
  50         return 0;
  51     }
  52 }
  53
  54 @ARGV = grep { fexists($_) } @ARGV;
  55
  56 while (<>) {
  57
  58     s/^\s*//;
  59     s/\s+$//;
  60     next unless m/\S/;
  61     next if m/^\#/;
  62
  63     if (m{^ single-user \s+ (\S+?) (/\S*)? \s+ (\S+) (?: \s+ (\S+) )? $ }x) {
  64         my ($h,$v,$u,$d) = ($1,$2,$3,$4);
  65         next unless $h eq $spechost;
  66         $serve_repo= remain_path($v);
  67         next unless defined $serve_repo;
  68         $serve_user= $u;
  69         $serve_dir= $d;
  70         syslog 'debug', "DEBUG $ARGV:$. match".
  71             " $serve_user $serve_dir $serve_repo";
  72     } elsif (m{^ multi-user \s+ (\S+?) (/\S*)? \s+ (\S+) $ }x) {
  73         my ($h,$v,$d) = ($1,$2,$3);
  74         next unless $1 eq $spechost;
  75         $serve_repo= remain_path($v);
  76         next unless defined $serve_repo;
  77         syslog 'debug', "DEBUG $ARGV:$. perhaps $serve_repo";
  78         next unless $serve_repo =~ s{ ^/\~( [a-z][-+_0-9a-z]* )/ }{/}xi;
  79         $serve_user= $1;
  80         $serve_dir= $d;
  81         syslog 'debug', "DEBUG $ARGV:$. match".
  82             " $serve_user $serve_dir $serve_repo";
  83     } elsif (m{^ repo-regexp \s+ (\S.*) $ }x) {
  84         $repo_regexp= $1;
  85     } elsif (m{^ (no-)?require-git-daemon-export-ok $ }x) {
  86         $check_export= !defined $1;
  87     } else {
  88         fail "config syntax error at $ARGV:$.";
  89     }
  90 }
  91
  92 # end