initial commit of file from CVS for smeserver-BackupPC on Sat Sep 7 20:10:07 AEST 2024

root/etc/e-smith/events/actions/backuppc-genkey

@@ -0,0 +1,33 @@
+#!/usr/bin/perl -w
+
+# Generate a keyfile for archives encryption
+
+my $keyfile = '/etc/BackupPC/archive.key';
+
+if (! -e $keyfile){
+    use MIME::Base64 qw(encode_base64);
+
+    my $key = "not set due to error";
+    if ( open( RANDOM, "/dev/urandom" ) ){   
+        my $buf;
+        # 57 bytes is a full line of Base64 coding, and contains
+        # 456 bits of randomness - given a perfectly random /dev/random
+        if ( read( RANDOM, $buf, 57 ) != 57 )
+        {   
+            warn("Short read from /dev/random: $!");
+        }
+        else
+        {   
+            $key = encode_base64($buf);
+            chomp $key;
+        }
+        close RANDOM;
+    }
+    else
+    {   
+        warn "Could not open /dev/urandom: $!";
+    }
+    open( KEYFILE, ">$keyfile") || warn "Could not open $keyfile: $!";
+    print KEYFILE $key;
+    close KEYFILE;
+}