2 # InspIRCd -- Internet Relay Chat Daemon
4 # Copyright (C) 2016-2020 Sadie Powell <sadie@witchery.services>
6 # This file is part of InspIRCd. InspIRCd is free software: you can
7 # redistribute it and/or modify it under the terms of the GNU General Public
8 # License as published by the Free Software Foundation, version 2.
10 # This program is distributed in the hope that it will be useful, but WITHOUT
11 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
12 # FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
15 # You should have received a copy of the GNU General Public License
16 # along with this program. If not, see <http://www.gnu.org/licenses/>.
20 package make::directive;
28 use warnings FATAL => qw(all);
30 use File::Basename qw(dirname);
31 use File::Spec::Functions qw(catdir);
32 use Exporter qw(import);
37 use constant DIRECTIVE_ERROR_PIPE => $ENV{INSPIRCD_VERBOSE} ? '' : '2>/dev/null';
38 use constant VENDOR_DIRECTORY => catdir(dirname(dirname(__FILE__)), 'vendor');
40 our @EXPORT = qw(get_directive
43 sub get_directive($$;$)
45 my ($file, $property, $default) = @_;
46 open(my $fh, $file) or return $default;
50 if ($_ =~ /^\/\* \$(\S+): (.+) \*\/$/ || $_ =~ /^\/\/\/ \$(\S+): (.+)/) {
51 next unless $1 eq $property;
52 $value .= ' ' . execute_functions($file, $1, $2);
57 # Strip all extraneous whitespace.
58 $value =~ s/^\s+|\s+$//g;
59 return $value || $default;
62 sub execute_functions($$$) {
63 my ($file, $name, $line) = @_;
65 # NOTE: we have to use 'our' instead of 'my' here because of a Perl bug.
66 for (our @parameters = (); $line =~ /([a-z_]+)\((?:\s*"([^"]*)(?{push @parameters, $2})"\s*)*\)/; undef @parameters) {
67 my $sub = make::directive->can("__function_$1");
68 print_error "unknown $name directive '$1' in $file!" unless $sub;
70 # Call the subroutine and replace the function.
71 my $result = $sub->($file, @parameters);
72 if (defined $result) {
73 $line = $` . $result . $';
77 # If the subroutine returns undef then it is a sign that we should
78 # disregard the rest of the line and stop processing it.
86 my ($prefix, $suffix) = @_;
87 $suffix =~ s/[-.]/_/g;
88 $suffix =~ s/[^A-Za-z0-9_]//g;
89 return $prefix . uc $suffix;
93 my ($file, @message) = @_;
96 # If we have package details then suggest to the user that they check
97 # that they have the packages installed.=
98 my $dependencies = get_directive($file, 'PackageInfo');
99 if (defined $dependencies) {
100 my @packages = sort grep { /^\S+$/ } split /\s/, $dependencies;
101 push @message, 'You should make sure you have the following packages installed:';
103 push @message, " * $_";
106 push @message, 'You should make sure that you have all of the required dependencies';
107 push @message, 'for this module installed.';
111 # If we have author information then tell the user to report the bug
112 # to them. Otherwise, assume it is a bundled module and tell the user
113 # to report it to the InspIRCd issue tracker.
114 my $author = get_directive($file, 'ModAuthor');
115 if (defined $author) {
116 push @message, 'If you believe this error to be a bug then you can try to contact the';
117 push @message, 'author of this module:';
118 my $author_mail = get_directive($file, 'ModAuthorMail');
119 if (defined $author_mail) {
120 push @message, " * $author <$author_mail>";
122 push @message, " * $author";
125 push @message, 'If you believe this error to be a bug then you can file a bug report';
126 push @message, 'at https://github.com/inspircd/inspircd/issues';
128 push @message, 'You can also refer to the documentation page for this module at';
129 push @message, "https://docs.inspircd.org/3/modules/${\module_shrink $file}";
133 push @message, 'If you would like help with fixing this problem then visit our IRC';
134 push @message, 'channel at irc.inspircd.org #InspIRCd for support.';
137 print_error @message;
140 sub __function_error {
141 my ($file, @messages) = @_;
142 __error $file, @messages;
145 sub __function_execute {
146 my ($file, $command, $environment, $defaults) = @_;
148 # Try to execute the command...
149 chomp(my $result = `$command ${\DIRECTIVE_ERROR_PIPE}`);
151 print_format "Execution of `<|GREEN $command|>` succeeded: <|BOLD $result|>\n";
155 # If looking up with pkg-config fails then check the environment...
156 if (defined $environment && $environment ne '') {
157 $environment = __environment 'INSPIRCD_', $environment;
158 if (defined $ENV{$environment}) {
159 print_format "Execution of `<|GREEN $command|>` failed; using the environment: <|BOLD $ENV{$environment}|>\n";
160 return $ENV{$environment};
164 # If all else fails then look for the defaults..
165 if (defined $defaults) {
166 print_format "Execution of `<|GREEN $command|>` failed; using the defaults: <|BOLD $defaults|>\n";
170 # Executing the command failed and we don't have any defaults so give up.
171 __error $file, "`<|GREEN $command|>` exited with a non-zero exit code!";
174 sub __function_find_compiler_flags {
175 my ($file, $name, $defaults) = @_;
177 # Try to look up the compiler flags with pkg-config...
178 chomp(my $flags = `pkg-config --cflags $name ${\DIRECTIVE_ERROR_PIPE}`);
180 print_format "Found the <|GREEN $name|> compiler flags for <|GREEN ${\module_shrink $file}|> using pkg-config: <|BOLD $flags|>\n";
184 # If looking up with pkg-config fails then check the environment...
185 my $key = __environment 'INSPIRCD_CXXFLAGS_', $name;
186 if (defined $ENV{$key}) {
187 print_format "Found the <|GREEN $name|> compiler flags for <|GREEN ${\module_shrink $file}|> using the environment: <|BOLD $ENV{$key}|>\n";
191 # If all else fails then look for the defaults..
192 if (defined $defaults) {
193 print_format "Using the default <|GREEN $name|> compiler flags for <|GREEN ${\module_shrink $file}|>: <|BOLD $defaults|>\n";
197 # We can't find it via pkg-config, via the environment, or via the defaults so give up.
198 __error $file, "unable to find the <|GREEN $name|> compiler flags for <|GREEN ${\module_shrink $file}|>!";
201 sub __function_find_linker_flags {
202 my ($file, $name, $defaults) = @_;
204 # Try to look up the linker flags with pkg-config...
205 chomp(my $flags = `pkg-config --libs $name ${\DIRECTIVE_ERROR_PIPE}`);
207 print_format "Found the <|GREEN $name|> linker flags for <|GREEN ${\module_shrink $file}|> using pkg-config: <|BOLD $flags|>\n";
211 # If looking up with pkg-config fails then check the environment...
212 my $key = __environment 'INSPIRCD_CXXFLAGS_', $name;
213 if (defined $ENV{$key}) {
214 print_format "Found the <|GREEN $name|> linker flags for <|GREEN ${\module_shrink $file}|> using the environment: <|BOLD $ENV{$key}|>\n";
218 # If all else fails then look for the defaults..
219 if (defined $defaults) {
220 print_format "Using the default <|GREEN $name|> linker flags for <|GREEN ${\module_shrink $file}|>: <|BOLD $defaults|>\n";
224 # We can't find it via pkg-config, via the environment, or via the defaults so give up.
225 __error $file, "unable to find the <|GREEN $name|> linker flags for <|GREEN ${\module_shrink $file}|>!";
228 sub __function_require_compiler {
229 my ($file, $name, $minimum, $maximum) = @_;
231 # Look up information about the compiler.
232 return undef unless $ENV{CXX};
233 my %compiler = get_compiler_info($ENV{CXX});
235 # Check whether the current compiler is suitable.
236 return undef unless $compiler{NAME} eq $name;
237 return undef if defined $minimum && $compiler{VERSION} < $minimum;
238 return undef if defined $maximum && $compiler{VERSION} > $maximum;
240 # Requirement directives don't change anything directly.
244 sub __function_require_system {
245 my ($file, $name, $minimum, $maximum) = @_;
246 my ($system, $version);
248 # Linux is special and can be compared by distribution names.
249 if ($^O eq 'linux' && $name ne 'linux') {
250 chomp($system = lc `lsb_release --id --short 2>/dev/null`);
251 chomp($version = lc `lsb_release --release --short 2>/dev/null`);
254 # Gather information on the system if we don't have it already.
255 chomp($system ||= lc `uname -s 2>/dev/null`);
256 chomp($version ||= lc `uname -r 2>/dev/null`);
258 # We only care about the important bit of the version number so trim the rest.
259 $version =~ s/^(\d+\.\d+).+/$1/;
261 # Check whether the current system is suitable.
262 return undef if $name ne $system;
263 return undef if defined $minimum && $version < $minimum;
264 return undef if defined $maximum && $version > $maximum;
266 # Requirement directives don't change anything directly.
270 sub __function_require_version {
271 my ($file, $name, $minimum, $maximum) = @_;
273 # If pkg-config isn't installed then we can't do anything here.
274 if (system "pkg-config --exists $name ${\DIRECTIVE_ERROR_PIPE}") {
275 print_warning "unable to look up the version of <|GREEN $name|> using pkg-config!";
279 # Check with pkg-config whether we have the required version.
280 return undef if defined $minimum && system "pkg-config --atleast-version $minimum $name";
281 return undef if defined $maximum && system "pkg-config --max-version $maximum $name";
283 # Requirement directives don't change anything directly.
287 sub __function_vendor_directory {
288 my ($file, $name) = @_;
290 # Try to look the directory up in the environment...
291 my $key = __environment 'INSPIRCD_VENDOR_', $name;
292 if (defined $ENV{$key}) {
293 print_format "Found the <|GREEN $name|> vendor directory for <|GREEN ${\module_shrink $file}|> using the environment: <|BOLD $ENV{$key}|>\n";
297 my $directory = catdir(VENDOR_DIRECTORY, $name);
299 print_format "Using the default <|GREEN $name|> vendor directory for <|GREEN ${\module_shrink $file}|>: <|BOLD $directory|>\n";
303 # We can't find it via the environment or via the filesystem so give up.
304 __error $file, "unable to find the <|GREEN $name|> vendor directory for <|GREEN ${\module_shrink $file}|>!";
307 sub __function_warning {
308 my ($file, @messages) = @_;
309 print_warning @messages;