changed tabs from 8 to 4 spaces
[strongswan.git] / src / libstrongswan / asn1 / oid.pl
1 #!/usr/bin/perl
2 # Generates oid.h and oid.c out of oid.txt
3 # Copyright (C) 2003-2004 Andreas Steffen, Zuercher Hochschule Winterthur
4 #
5 # This program is free software; you can redistribute it and/or modify it
6 # under the terms of the GNU General Public License as published by the
7 # Free Software Foundation; either version 2 of the License, or (at your
8 # option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
9 #
10 # This program is distributed in the hope that it will be useful, but
11 # WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
12 # or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 # for more details.
14 #
15
16 $copyright="Copyright (C) 2003-2004 Andreas Steffen, Zuercher Hochschule Winterthur";
17 $automatic="This file has been automatically generated by the script oid.pl";
18 $warning="Do not edit manually!";
19
20 print "oid.pl generating oid.h and oid.c\n";
21
22 # Generate oid.h
23
24 open(OID_H, ">oid.h")
25 or die "could not open 'oid.h': $!";
26
27 print OID_H "/* Object identifiers (OIDs) used by FreeS/WAN\n",
28 " * ", $copyright, "\n",
29 " * \n",
30 " * ", $automatic, "\n",
31 " * ", $warning, "\n",
32 " */\n\n",
33 "#ifndef OID_H_\n",
34 "#define OID_H_\n\n",
35 "typedef struct {\n",
36 " u_char octet;\n",
37 " u_int next;\n",
38 " u_int down;\n",
39 " const u_char *name;\n",
40 "} oid_t;\n",
41 "\n",
42 "extern const oid_t oid_names[];\n",
43 "\n",
44 "#define OID_UNKNOWN -1\n";
45
46 # parse oid.txt
47
48 open(SRC, "<oid.txt")
49 or die "could not open 'oid.txt': $!";
50
51 $counter = 0;
52 $max_name = 0;
53 $max_order = 0;
54
55 while ($line = <SRC>)
56 {
57 $line =~ m/( *?)(0x\w{2})\s+(".*?")[ \t]*?([\w_]*?)\Z/;
58
59 @order[$counter] = length($1);
60 @octet[$counter] = $2;
61 @name[$counter] = $3;
62
63 if (length($1) > $max_order)
64 {
65 $max_order = length($1);
66 }
67 if (length($3) > $max_name)
68 {
69 $max_name = length($3);
70 }
71 if (length($4) > 0)
72 {
73 printf OID_H "#define %s%s%d\n", $4, "\t" x ((39-length($4))/4), $counter;
74 }
75 $counter++;
76 }
77
78 print OID_H "\n#endif /* OID_H_ */\n";
79
80 close SRC;
81 close OID_H;
82
83 # Generate oid.c
84
85 open(OID_C, ">oid.c")
86 or die "could not open 'oid.c': $!";
87
88 print OID_C "/* List of some useful object identifiers (OIDs)\n",
89 " * ", $copyright, "\n",
90 " * \n",
91 " * ", $automatic, "\n",
92 " * ", $warning, "\n",
93 " */\n",
94 "\n",
95 "#include <stdlib.h>\n",
96 "\n",
97 "#include \"oid.h\"\n",
98 "\n",
99 "const oid_t oid_names[] = {\n";
100
101 for ($c = 0; $c < $counter; $c++)
102 {
103 $next = 0;
104
105 for ($d = $c+1; $d < $counter && @order[$d] >= @order[$c]; $d++)
106 {
107 if (@order[$d] == @order[$c])
108 {
109 @next[$c] = $d;
110 last;
111 }
112 }
113
114 printf OID_C " {%s%s,%s%3d, %d, %s%s}%s /* %3d */\n"
115 ,' ' x @order[$c]
116 , @octet[$c]
117 , ' ' x (1 + $max_order - @order[$c])
118 , @next[$c]
119 , @order[$c+1] > @order[$c]
120 , @name[$c]
121 , ' ' x ($max_name - length(@name[$c]))
122 , $c != $counter-1 ? "," : " "
123 , $c;
124 }
125
126 print OID_C "};\n" ;
127 close OID_C;