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authorArne Schwabe <arne@rfc2549.org>2012-04-16 19:21:14 +0200
committerArne Schwabe <arne@rfc2549.org>2012-04-16 19:21:14 +0200
commit3e4d8f433239c40311037616b1b8833a06651ae0 (patch)
tree98ab7fce0d011d34677b0beb762d389cb5c39199 /openssl/crypto/asn1/charmap.pl
Initial import
Diffstat (limited to 'openssl/crypto/asn1/charmap.pl')
-rw-r--r--openssl/crypto/asn1/charmap.pl80
1 files changed, 80 insertions, 0 deletions
diff --git a/openssl/crypto/asn1/charmap.pl b/openssl/crypto/asn1/charmap.pl
new file mode 100644
index 00000000..2875c598
--- /dev/null
+++ b/openssl/crypto/asn1/charmap.pl
@@ -0,0 +1,80 @@
+#!/usr/local/bin/perl -w
+
+use strict;
+
+my ($i, @arr);
+
+# Set up an array with the type of ASCII characters
+# Each set bit represents a character property.
+
+# RFC2253 character properties
+my $RFC2253_ESC = 1; # Character escaped with \
+my $ESC_CTRL = 2; # Escaped control character
+# These are used with RFC1779 quoting using "
+my $NOESC_QUOTE = 8; # Not escaped if quoted
+my $PSTRING_CHAR = 0x10; # Valid PrintableString character
+my $RFC2253_FIRST_ESC = 0x20; # Escaped with \ if first character
+my $RFC2253_LAST_ESC = 0x40; # Escaped with \ if last character
+
+for($i = 0; $i < 128; $i++) {
+ # Set the RFC2253 escape characters (control)
+ $arr[$i] = 0;
+ if(($i < 32) || ($i > 126)) {
+ $arr[$i] |= $ESC_CTRL;
+ }
+
+ # Some PrintableString characters
+ if( ( ( $i >= ord("a")) && ( $i <= ord("z")) )
+ || ( ( $i >= ord("A")) && ( $i <= ord("Z")) )
+ || ( ( $i >= ord("0")) && ( $i <= ord("9")) ) ) {
+ $arr[$i] |= $PSTRING_CHAR;
+ }
+}
+
+# Now setup the rest
+
+# Remaining RFC2253 escaped characters
+
+$arr[ord(" ")] |= $NOESC_QUOTE | $RFC2253_FIRST_ESC | $RFC2253_LAST_ESC;
+$arr[ord("#")] |= $NOESC_QUOTE | $RFC2253_FIRST_ESC;
+
+$arr[ord(",")] |= $NOESC_QUOTE | $RFC2253_ESC;
+$arr[ord("+")] |= $NOESC_QUOTE | $RFC2253_ESC;
+$arr[ord("\"")] |= $RFC2253_ESC;
+$arr[ord("\\")] |= $RFC2253_ESC;
+$arr[ord("<")] |= $NOESC_QUOTE | $RFC2253_ESC;
+$arr[ord(">")] |= $NOESC_QUOTE | $RFC2253_ESC;
+$arr[ord(";")] |= $NOESC_QUOTE | $RFC2253_ESC;
+
+# Remaining PrintableString characters
+
+$arr[ord(" ")] |= $PSTRING_CHAR;
+$arr[ord("'")] |= $PSTRING_CHAR;
+$arr[ord("(")] |= $PSTRING_CHAR;
+$arr[ord(")")] |= $PSTRING_CHAR;
+$arr[ord("+")] |= $PSTRING_CHAR;
+$arr[ord(",")] |= $PSTRING_CHAR;
+$arr[ord("-")] |= $PSTRING_CHAR;
+$arr[ord(".")] |= $PSTRING_CHAR;
+$arr[ord("/")] |= $PSTRING_CHAR;
+$arr[ord(":")] |= $PSTRING_CHAR;
+$arr[ord("=")] |= $PSTRING_CHAR;
+$arr[ord("?")] |= $PSTRING_CHAR;
+
+# Now generate the C code
+
+print <<EOF;
+/* Auto generated with chartype.pl script.
+ * Mask of various character properties
+ */
+
+static unsigned char char_type[] = {
+EOF
+
+for($i = 0; $i < 128; $i++) {
+ print("\n") if($i && (($i % 16) == 0));
+ printf("%2d", $arr[$i]);
+ print(",") if ($i != 127);
+}
+print("\n};\n\n");
+