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authorNorbert Preining <preining@logic.at>2009-06-11 19:01:59 +0000
committerNorbert Preining <preining@logic.at>2009-06-11 19:01:59 +0000
commit6926aa31b7f53caf8b5e9b1e1c4ad5ccde9b8b02 (patch)
treef5b8032bfe9175642dddbf6ad885228760131fd2 /Master/texmf
parent4668ff2135619ef67c9561b09886b591d4a1879e (diff)
support saved texlive.tlpdb
git-svn-id: svn://tug.org/texlive/trunk@13711 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Master/texmf')
-rwxr-xr-xMaster/texmf/scripts/texlive/tlmgr.pl68
1 files changed, 66 insertions, 2 deletions
diff --git a/Master/texmf/scripts/texlive/tlmgr.pl b/Master/texmf/scripts/texlive/tlmgr.pl
index 3f32bb63543..f97c0bbf4c4 100755
--- a/Master/texmf/scripts/texlive/tlmgr.pl
+++ b/Master/texmf/scripts/texlive/tlmgr.pl
@@ -62,6 +62,8 @@ use Pod::Usage;
use Getopt::Long qw(:config no_autoabbrev permute);
use strict;
+use Digest::MD5;
+
use TeXLive::TLConfig;
use TeXLive::TLMedia;
use TeXLive::TLPDB;
@@ -2677,10 +2679,72 @@ sub init_tlmedia {
print "location-url\t$location\n" if $::machinereadable;
info("tlmgr: installation location $location\n");
- # $tlmediasrc is a global variable
- $tlmediasrc = TeXLive::TLMedia->new($location);
+ #
+ # if we talk about a net location try to download the hash of the tlpdb
+ # - if that is possible, check for the locally saved file and if the hash
+ # agrees load the local copy if present instead of the remote one,
+ # if the hashes disagree, load the remote tlpdb
+ # - if that does not work assume we are offline or target not reachable,
+ # so warn the user and use saved, but note that installation will
+ # not work
+
+ my $local_copy_tlpdb_used = 0;
+ if ($location =~ m;^(http|ftp)://;) {
+ # first check that the saved tlpdb is present at all
+ my $loc_digest = Digest::MD5::md5_hex($location);
+ my $loc_copy_of_remote_tlpdb =
+ "$Master/$InfraLocation/texlive.tlpdb.$loc_digest";
+ ddebug("loc_digest = $loc_digest\n");
+ ddebug("loc_copy = $loc_copy_of_remote_tlpdb\n");
+ if (-r $loc_copy_of_remote_tlpdb) {
+ ddebug("loc copy found!\n");
+ # we found the tlpdb matching the current location
+ # check for the remote hash
+ my $path = "$location/$InfraLocation/$DatabaseName.md5";
+ ddebug("remote path of digest = $path\n");
+ my $fh = TeXLive::TLUtils::download_file($path, "|");
+ my $rem_digest;
+ if (read ($fh, $rem_digest, 32) != 32) {
+ info("No internet access detected, but a local copy of the remote\n");
+ info("texlive database has been found. Using this copy.\n");
+ $tlmediasrc = TeXLive::TLMedia->new(-location => $location,
+ -tlpdbfile => $loc_copy_of_remote_tlpdb);
+ $local_copy_tlpdb_used = 1;
+ } else {
+ ddebug("found remote digest: $rem_digest\n");
+ my $rem_copy_digest = TeXLive::TLUtils::tlmd5($loc_copy_of_remote_tlpdb);
+ ddebug("rem_copy_digest = $rem_copy_digest\n");
+ if ($rem_copy_digest eq $rem_digest) {
+ debug("md5 of local copy identical with remote hash\n");
+ $tlmediasrc = TeXLive::TLMedia->new(-location => $location,
+ -tlpdbfile => $loc_copy_of_remote_tlpdb);
+ $local_copy_tlpdb_used = 1;
+ }
+ }
+ }
+ }
+ if (!$local_copy_tlpdb_used) {
+ # $tlmediasrc is a global variable
+ $tlmediasrc = TeXLive::TLMedia->new(-location => $location);
+ }
die($loadmediasrcerror . $location) unless defined($tlmediasrc);
$tlmediatlpdb = $tlmediasrc->tlpdb;
+ # save remote database if it is a net location
+ # make sure that the writeout of the tlpdb is done in UNIX mode
+ # since otherwise the sha256 will change.
+ if (!$local_copy_tlpdb_used && $location =~ m;^(http|ftp)://;) {
+ my $loc_digest = Digest::MD5::md5_hex($location);
+ my $loc_copy_of_remote_tlpdb =
+ "$Master/$InfraLocation/texlive.tlpdb.$loc_digest";
+ my $tlfh;
+ if (!open($tlfh, ">:unix", $loc_copy_of_remote_tlpdb)) {
+ tlwarn("Cannot save remote TeX Live database to $loc_copy_of_remote_tlpdb: $!\n");
+ } else {
+ print "DEBUG: writing out tlpdb to $loc_copy_of_remote_tlpdb\n";
+ $tlmediatlpdb->writeout($tlfh);
+ close($tlfh);
+ }
+ }
}
}