mxproxmox: Add command check-pbackup

Add new command `check-pbackup`, which makes suggestions, what jobs to
add to /etc/mxproxmox/backup-list.dat based on pbackup configuration.

The output consists of out-commented lines which can be added to
/etc/mxproxmox/backup-list.dat and uncommented one by one to phase in
new proxmox backup jobs.

mxproxmox/mxproxmox

@@ -15,6 +15,7 @@ usage: $0 cmd
     $0 client [cmd...]    : call proxmox-backup-client (add key file if required)
     $0 tclient [cmd...]   : same with workaround for reiserfs /tmp
     $0 active-jobs        : list jobs active on server
+    $0 check-pbackup      : cross-check pbackup and mxproxmox jobs
 
 Examples:
 
@@ -248,6 +249,55 @@ sub cmd_local_backups {
     }
 }
 
+sub cmd_check_pbackup {
+
+    read_backup_list();
+
+    my %jobs;
+    for my $p (
+        do_map('home', 'auto.home', 0),
+        do_map('cfdl', 'auto.confidential', 0),
+        do_map('prj',  'auto.project', 0),
+        do_map('pkg',  'auto.package', 0),
+        do_map('cfdl', 'auto.confidential', 0),
+        do_map('src',  'auto.src', 0),
+    ) {
+        my ($ident, $path) = @$p;
+        $jobs{$ident} = $path if $ident =~ /^home_/;
+        $jobs{$ident} = $path if exists $INCLUDE{$ident};
+    }
+
+    my %pbackup_jobs;
+    open my $pipe, '-|', '/project/admin/pbackup/bin/pbackup', 'parse-jobs' or die "/project/admin/pbackup/bin/pbackup: $!\n";
+    for (<$pipe>) {
+        chomp;
+        my ($ident, $path) = split " ", $_, 2;
+        next if $ident =~ /^sys_/;
+        $path =~ s/^[a-z0-9]+://i;
+        $pbackup_jobs{$ident} = $path;
+    }
+    close $pipe or exit 1;
+
+    print "\n\n# The following output was generated by `mxproxmox check-pbackup`:\n\n";
+
+    for my $ident (sort keys %jobs) {
+        if (!exists $pbackup_jobs{$ident}) {
+            print "# consider to remove $ident, because it is not a a pbackup job\n";
+        }
+    }
+    print "\n";
+
+    for my $ident (sort keys %pbackup_jobs) {
+        if (exists $jobs{$ident}) {
+            if ($pbackup_jobs{$ident} ne $jobs{$ident}) {
+                warn "$ident: path differ. pbackup: ", $pbackup_jobs{$ident}, " proxmox: ", $jobs{$ident}, "\n";
+            }
+        } else {
+            printf "# %-30s # consider to add, because its a pbackup job\n", $ident;
+        }
+    }
+}
+
 sub cmd_client {
     my @cmd = ('proxmox-backup-client', @_);
     if ( $_[0] =~ /^(catalog|restore|mount|map|backup)$/ ) {
@@ -291,6 +341,9 @@ if ($cmd eq 'api') {
     read_cred_file();
     init_ua();
     cmd_active_jobs(@ARGV);
+} elsif ($cmd eq 'check-pbackup') {
+    @ARGV==0 or die USAGE;
+    cmd_check_pbackup(@ARGV);
 } else {
     die USAGE;
 }