Revert 3a1bbc7 in PR #1885 to postpone making Unicode::UTF8 mandatory.

.github/workflows/make-check.yml

@@ -61,7 +61,7 @@ jobs:
             --verbose --no-interactive
             --with-develop
             --with-feature=Data::Password --with-feature=ldap
-            --with-feature=smime
+            --with-feature=safe-unicode --with-feature=smime
             --with-feature=soap --with-feature=sqlite
             ${{ startsWith(matrix.os, 'macos') && '--with-feature=macos' || '' }}
       - name: Run tests

.gitlab-ci.yml

@@ -7,7 +7,7 @@
     - . ~/bashrc
     - coverage-install
     - coverage-setup
-    - cpanm --quiet --notest --installdeps --with-develop --with-feature=Data::Password --with-feature=ldap --with-feature=smime --with-feature=soap --with-feature=sqlite .
+    - cpanm --quiet --notest --installdeps --with-develop --with-feature=Data::Password --with-feature=ldap --with-feature=safe-unicode --with-feature=smime --with-feature=soap --with-feature=sqlite .
     - autoreconf -i
     - ./configure
     - cd src; make; cd ..

.travis.yml

@@ -25,7 +25,7 @@ before_install:
 
 install:
   - cpan-install --coverage
-  - cpanm --installdeps --notest --with-develop --with-feature=Data::Password --with-feature=ldap --with-feature=smime --with-feature=soap --with-feature=sqlite .
+  - cpanm --installdeps --notest --with-develop --with-feature=Data::Password --with-feature=ldap --with-feature=safe-unicode --with-feature=smime --with-feature=soap --with-feature=sqlite .
 
 before_script:
   - coverage-setup

cpanfile

@@ -150,14 +150,6 @@ requires 'Time::HiRes', '>= 1.29';
 # Used to get Unix time from local time
 requires 'Time::Local', '>= 1.23';
 
-# Normalizes file names represented by Unicode.
-# Note: Perl 5.8.1 bundles version 0.23.
-# Note: Perl 5.10.1 bundles 1.03 (per Unicode 5.1.0).
-requires 'Unicode::Normalize', '>= 1.03';
-
-# Sanitizes inputs with Unicode text.
-requires 'Unicode::UTF8', '>= 0.58';
-
 # Used to create URI containing non URI-canonical characters.
 # Note: '3.28' is the version included in URI-1.35.
 requires 'URI::Escape', '>= 3.28';
@@ -198,6 +190,13 @@ recommends 'Net::DNS', '>= 0.65';
 # This is required if you set "list_check_smtp" sympa.conf parameter, used to check existing aliases before mailing list creation.
 recommends 'Net::SMTP';
 
+# Normalizes file names represented by Unicode
+# Note: Perl 5.8.1 bundles version 0.23.
+# Note: Perl 5.10.1 bundles 1.03 (per Unicode 5.1.0).
+recommends 'Unicode::Normalize', '>= 1.03';
+
+recommends 'Unicode::UTF8', '>= 0.60';
+
 ### Features
 ##
 
@@ -325,9 +324,10 @@ feature 'soap', 'Required if you want to run the Sympa SOAP server that provides
 };
 
 feature 'safe-unicode', 'Sanitizes inputs with Unicode text.' => sub {
-    # Note: These became required (>=6.2.73b).
-    #requires 'Unicode::Normalize', '>= 1.03';
-    #requires 'Unicode::UTF8', '>= 0.58';
+    # Note: Perl 5.8.1 bundles version 0.23.
+    # Note: Perl 5.10.1 bundles 1.03 (per Unicode 5.1.0).
+    requires 'Unicode::Normalize', '>= 1.03';
+    requires 'Unicode::UTF8', '>= 0.60';
 };
 
 on 'test' => sub {

src/cgi/wwsympa.fcgi.in

@@ -39,7 +39,6 @@ use IO::File qw();
 use MIME::EncWords;
 use MIME::Lite::HTML;
 use POSIX qw();
-use Unicode::UTF8;
 use URI;
 use Data::Dumper;    # tentative
 
@@ -53,6 +52,10 @@ BEGIN {
         and $Archive::Zip::SimpleZip::VERSION;
 }
 
+BEGIN {
+    eval 'use Unicode::UTF8 qw()';
+}
+
 use Sympa;
 use Sympa::Archive;
 use Conf;
@@ -1060,7 +1063,18 @@ while ($query = Sympa::WWW::FastCGI->new) {
     while (my ($k, $v) = each %in) {
         next if ref $v;
         next if Encode::is_utf8($v);
-        unless (Unicode::UTF8::valid_utf8($v)) {
+
+        my $valid_utf8;
+        if ($Unicode::UTF8::VERSION) {
+            $valid_utf8 = Unicode::UTF8::valid_utf8($v);
+        } else {
+            eval {
+                my $u = $v;
+                Encode::decode('UTF-8', $u, Encode::FB_CROAK());
+                $valid_utf8 = 1;
+            };
+        }
+        unless ($valid_utf8) {
             $log->syslog('err', 'Parameter in invalid UTF-8 %s="%s": Ignored',
                 $k, sprintf("\\x%*v02X", "\\x", $v));
             delete $in{$k};

src/lib/Sympa/Tools/Text.pm

@@ -39,8 +39,8 @@ use MIME::EncWords;
 use Text::LineFold;
 use Unicode::GCString;
 use URI::Escape qw();
-use Unicode::Normalize qw();
-use Unicode::UTF8;
+BEGIN { eval 'use Unicode::Normalize qw()'; }
+BEGIN { eval 'use Unicode::UTF8 qw()'; }
 
 use Sympa::Language;
 use Sympa::Regexps;
@@ -141,11 +141,15 @@ sub canonic_text {
     my $utext;
     if (Encode::is_utf8($text)) {
         $utext = $text;
-    } else {
+    } elsif ($Unicode::UTF8::VERSION) {
         no warnings 'utf8';
         $utext = Unicode::UTF8::decode_utf8($text);
+    } else {
+        $utext = Encode::decode_utf8($text);
+    }
+    if ($Unicode::Normalize::VERSION) {
+        $utext = Unicode::Normalize::normalize('NFC', $utext);
     }
-    $utext = Unicode::Normalize::normalize('NFC', $utext);
 
     # Remove DOS linefeeds (^M) that cause problems with Outlook 98, AOL,
     # and EIMS:
@@ -309,8 +313,13 @@ sub guessed_to_utf8 {
         and length $text
         and $text =~ /[^\x00-\x7F]/;
 
-    my $utf8 = Unicode::UTF8::decode_utf8($text)
-        if Unicode::UTF8::valid_utf8($text);
+    my $utf8;
+    if ($Unicode::UTF8::VERSION) {
+        $utf8 = Unicode::UTF8::decode_utf8($text)
+            if Unicode::UTF8::valid_utf8($text);
+    } else {
+        $utf8 = eval { Encode::decode_utf8($text, Encode::FB_CROAK()) };
+    }
     unless (defined $utf8) {
         foreach my $charset (map { $_ ? @$_ : () } @legacy_charsets{@langs}) {
             $utf8 =
@@ -323,7 +332,8 @@ sub guessed_to_utf8 {
     }
 
     # Apply NFC: e.g. for modified-NFD by Mac OS X.
-    $utf8 = Unicode::Normalize::normalize('NFC', $utf8);
+    $utf8 = Unicode::Normalize::normalize('NFC', $utf8)
+        if $Unicode::Normalize::VERSION;
 
     return Encode::encode_utf8($utf8);
 }

t/Tools_Text.t

@@ -46,13 +46,18 @@ is $dec, $unicode_email, 'decode_filesystem_safe, Unicode';
 # ToDo: foldcase()
 # ToDo: wrap_text()
 
-# Noncharacters: U+D800, U+10FFE, U+110000, U+200000
-is Sympa::Tools::Text::canonic_text(
-    "\xED\xA0\x80\n\xF4\x8F\xBF\xBE\n\xF4\x90\x80\x80\n\xF8\x88\x80\x80\x80\n"
-    ),
-    Encode::encode_utf8(
-    "\x{FFFD}\x{FFFD}\x{FFFD}\n\x{FFFD}\n\x{FFFD}\x{FFFD}\x{FFFD}\x{FFFD}\n\x{FFFD}\x{FFFD}\x{FFFD}\x{FFFD}\x{FFFD}\n"
-    ),
-    'canonic_text';
+SKIP: {
+    skip 'Unicode::Normalize and Unicode::UTF8 required.'
+        unless $Unicode::Normalize::VERSION and $Unicode::UTF8::VERSION;
+
+    # Noncharacters: U+D800, U+10FFE, U+110000, U+200000
+    is Sympa::Tools::Text::canonic_text(
+        "\xED\xA0\x80\n\xF4\x8F\xBF\xBE\n\xF4\x90\x80\x80\n\xF8\x88\x80\x80\x80\n"
+        ),
+        Encode::encode_utf8(
+        "\x{FFFD}\x{FFFD}\x{FFFD}\n\x{FFFD}\n\x{FFFD}\x{FFFD}\x{FFFD}\x{FFFD}\n\x{FFFD}\x{FFFD}\x{FFFD}\x{FFFD}\x{FFFD}\n"
+        ),
+        'canonic_text';
+}
 
 done_testing();