script/mks3param.pl

   1 #!/usr/bin/perl
   2 # Generate loadparm interfaces tables for Samba3/Samba4 integration
   3 # by Andrew Bartlett
   4 # based on mkproto.pl Written by Jelmer Vernooij
   5 # based on the original mkproto.sh by Andrew Tridgell
   6
   7 use strict;
   8
   9 # don't use warnings module as it is not portable enough
  10 # use warnings;
  11
  12 use Getopt::Long;
  13 use File::Basename;
  14 use File::Path;
  15
  16 #####################################################################
  17 # read a file into a string
  18
  19 my $file = undef;
  20 my $public_define = undef;
  21 my $_public = "";
  22 my $_private = "";
  23 my $public_data = \$_public;
  24 my $builddir = ".";
  25 my $srcdir = ".";
  26
  27 sub public($)
  28 {
  29         my ($d) = @_;
  30         $$public_data .= $d;
  31 }
  32
  33 sub usage()
  34 {
  35         print "Usage: mks3param.pl [options] [c files]\n";
  36         print "OPTIONS:\n";
  37         print "  --srcdir=path          Read files relative to this directory\n";
  38         print "  --builddir=path        Write file relative to this directory\n";
  39         print "  --help                 Print this help message\n\n";
  40         exit 0;
  41 }
  42
  43 GetOptions(
  44         'file=s' => sub { my ($f,$v) = @_; $file = $v; },
  45         'srcdir=s' => sub { my ($f,$v) = @_; $srcdir = $v; },
  46         'builddir=s' => sub { my ($f,$v) = @_; $builddir = $v; },
  47         'help' => \&usage
  48 ) or exit(1);
  49
  50 sub normalize_define($$)
  51 {
  52         my ($define, $file) = @_;
  53
  54         if (not defined($define) and defined($file)) {
  55                 $define = "__" . uc($file) . "__";
  56                 $define =~ tr{./}{__};
  57                 $define =~ tr{\-}{_};
  58         } elsif (not defined($define)) {
  59                 $define = '_S3_PARAM_H_';
  60         }
  61
  62         return $define;
  63 }
  64
  65 $public_define = normalize_define($public_define, $file);
  66
  67 sub file_load($)
  68 {
  69     my($filename) = @_;
  70     local(*INPUTFILE);
  71     open(INPUTFILE, $filename) or return undef;
  72     my($saved_delim) = $/;
  73     undef $/;
  74     my($data) = <INPUTFILE>;
  75     close(INPUTFILE);
  76     $/ = $saved_delim;
  77     return $data;
  78 }
  79
  80 sub print_header($$)
  81 {
  82         my ($file, $header_name) = @_;
  83         $file->("#ifndef $header_name\n");
  84         $file->("#define $header_name\n\n");
  85         $file->("/* This file was automatically generated by mks3param.pl. DO NOT EDIT */\n\n");
  86         $file->("struct loadparm_s3_helpers\n");
  87         $file->("{\n");
  88         $file->("\tconst char * (*get_parametric)(struct loadparm_service *, const char *type, const char *option);\n");
  89         $file->("\tstruct parm_struct * (*get_parm_struct)(const char *param_name);\n");
  90         $file->("\tvoid * (*get_parm_ptr)(struct loadparm_service *service, struct parm_struct *parm);\n");
  91         $file->("\tstruct loadparm_service * (*get_service)(const char *service_name);\n");
  92         $file->("\tstruct loadparm_service * (*get_default_loadparm_service)(void);\n");
  93         $file->("\tstruct loadparm_service * (*get_servicebynum)(int snum);\n");
  94         $file->("\tint (*get_numservices)(void);\n");
  95         $file->("\tbool (*load)(const char *filename);\n");
  96         $file->("\tbool (*set_cmdline)(const char *pszParmName, const char *pszParmValue);\n");
  97         $file->("\tvoid (*dump)(FILE *f, bool show_defaults, int maxtoprint);\n");
  98 }
  99
 100 sub print_footer($$)
 101 {
 102         my ($file, $header_name) = @_;
 103         $file->("};");
 104         $file->("\n#endif /* $header_name */\n\n");
 105 }
 106
 107 sub handle_loadparm($$)
 108 {
 109         my ($file,$line) = @_;
 110
 111         # Local parameters don't need the ->s3_fns because the struct
 112         # loadparm_service is shared and lpcfg_service() checks the ->s3_fns
 113         # hook
 114         #
 115         # STRING isn't handled as we do not yet have a way to pass in a memory context nor
 116         # do we have a good way of dealing with the % macros yet.
 117
 118         if ($line =~ /^FN_(GLOBAL)_(CONST_STRING|BOOL|bool|CHAR|INTEGER|LIST)\((\w+),.*\)/o) {
 119                 my $scope = $1;
 120                 my $type = $2;
 121                 my $name = $3;
 122
 123                 my %tmap = (
 124                             "BOOL" => "bool ",
 125                             "CONST_STRING" => "const char *",
 126                             "STRING" => "const char *",
 127                             "INTEGER" => "int ",
 128                             "CHAR" => "char ",
 129                             "LIST" => "const char **",
 130                             );
 131
 132                 $file->("\t$tmap{$type} (*$name)(void);\n");
 133         }
 134 }
 135
 136 sub process_file($$)
 137 {
 138         my ($file, $filename) = @_;
 139
 140         $filename =~ s/\.o$/\.c/g;
 141
 142         if ($filename =~ /^\//) {
 143                 open(FH, "<$filename") or die("Failed to open $filename");
 144         } elsif (!open(FH, "< $builddir/$filename")) {
 145             open(FH, "< $srcdir/$filename") || die "Failed to open $filename";
 146         }
 147
 148         my $comment = undef;
 149         my $incomment = 0;
 150         while (my $line = <FH>) {
 151                 if ($line =~ /^\/\*\*/) {
 152                         $comment = "";
 153                         $incomment = 1;
 154                 }
 155
 156                 if ($incomment) {
 157                         $comment .= $line;
 158                         if ($line =~ /\*\//) {
 159                                 $incomment = 0;
 160                         }
 161                 }
 162
 163                 # these are ordered for maximum speed
 164                 next if ($line =~ /^\s/);
 165
 166                 next unless ($line =~ /\(/);
 167
 168                 next if ($line =~ /^\/|[;]/);
 169
 170                 if ($line =~ /^FN_/) {
 171                         handle_loadparm($file, $line);
 172                 }
 173                 next;
 174         }
 175
 176         close(FH);
 177 }
 178
 179
 180 print_header(\&public, $public_define);
 181
 182 process_file(\&public, $_) foreach (@ARGV);
 183 print_footer(\&public, $public_define);
 184
 185 if (not defined($file)) {
 186         print STDOUT $$public_data;
 187 }
 188
 189 mkpath(dirname($file), 0, 0755);
 190 open(PUBLIC, ">$file") or die("Can't open `$file': $!");
 191 print PUBLIC "$$public_data";
 192 close(PUBLIC);
 193