test1165: verify that CURL_DISABLE_ symbols are in sync

between configure.ac and source code. They should be possible to switch
on/off in configure AND be used in source code.

tests/data/Makefile.inc

@@ -128,8 +128,7 @@ test1128 test1129 test1130 test1131 test1132 test1133 test1134 test1135 \
 test1136 test1137 test1138 test1139 test1140 test1141 test1142 test1143 \
 test1144 test1145 test1146 test1147 test1148 test1149 test1150 test1151 \
 test1152 test1153 test1154 test1155 test1156 test1157 test1158 test1159 \
-\
+test1160 test1161 test1162 test1163 test1164 test1165 \
-test1160 test1161 test1162 test1163 test1164 \
 test1170 test1171 test1172 \
 \
 test1200 test1201 test1202 test1203 test1204 test1205 test1206 test1207 \

tests/data/test1165

@@ -0,0 +1,25 @@
+<testcase>
+<info>
+<keywords>
+source analysis
+CURL_DISABLE
+</keywords>
+</info>
+
+#
+# Client-side
+<client>
+<server>
+none
+</server>
+
+ <name>
+Verify configure.ac and source code CURL_DISABLE_-sync
+ </name>
+
+<command type="perl">
+%SRCDIR/disable-scan.pl %SRCDIR/..
+</command>
+</client>
+
+</testcase>

tests/disable-scan.pl

@@ -0,0 +1,97 @@
+#!/usr/bin/env perl
+#***************************************************************************
+#                                  _   _ ____  _
+#  Project                     ___| | | |  _ \| |
+#                             / __| | | | |_) | |
+#                            | (__| |_| |  _ <| |___
+#                             \___|\___/|_| \_\_____|
+#
+# Copyright (C) 2010-2019, Daniel Stenberg, <daniel@haxx.se>, et al.
+#
+# This software is licensed as described in the file COPYING, which
+# you should have received as part of this distribution. The terms
+# are also available at https://curl.haxx.se/docs/copyright.html.
+#
+# You may opt to use, copy, modify, merge, publish, distribute and/or sell
+# copies of the Software, and permit persons to whom the Software is
+# furnished to do so, under the terms of the COPYING file.
+#
+# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+# KIND, either express or implied.
+#
+###########################################################################
+#
+
+use strict;
+use warnings;
+
+# the DISABLE options that can be set by configure
+my %disable;
+# the DISABLE options that are used in C files
+my %file;
+
+# we may get the dir root pointed out
+my $root=$ARGV[0] || ".";
+
+sub scan_configure {
+    open S, "<$root/configure.ac";
+    while(<S>) {
+        if(/(CURL_DISABLE_[A-Z_]+)/g) {
+            my ($sym)=($1);
+            $disable{$sym} = 1;
+        }
+    }
+    close S;
+}
+
+sub scan_file {
+    my ($source)=@_;
+    open F, "<$source";
+    while(<F>) {
+        if(/(CURL_DISABLE_[A-Z_]+)/g) {
+            my ($sym)=($1);
+            $file{$sym} = $source;
+        }
+    }
+    close F;
+}
+
+sub scan_dir {
+    my ($dir)=@_;
+    opendir(my $dh, $dir) || die "Can't opendir $dir: $!";
+    my @cfiles = grep { /\.c\z/ && -f "$dir/$_" } readdir($dh);
+    closedir $dh;
+    for my $f (sort @cfiles) {
+        scan_file("$dir/$f");
+    }
+}
+
+sub scan_sources {
+    scan_dir("$root/src");
+    scan_dir("$root/lib");
+    scan_dir("$root/lib/vtls");
+    scan_dir("$root/lib/vauth");
+}
+
+scan_configure();
+scan_sources();
+
+
+my $error = 0;
+# Check the configure symbols for use in code
+for my $s (sort keys %disable) {
+    if(!$file{$s}) {
+        printf "Present in configure.ac, not used by code: %s\n", $s;
+        $error++;
+    }
+}
+
+# Check the code symbols for use in configure
+for my $s (sort keys %file) {
+    if(!$disable{$s}) {
+        printf "Not set by configure: %s (%s)\n", $s, $file{$s};
+        $error++;
+    }
+}
+
+exit $error;