Adding Test.pm with workaround for Perl abs2rel bug

mpeylo · levitte · commit 374cab6390ba · 2019-07-02T20:12:28.000+02:00
If SRCTOP != BLDTOP, and SRCTOP is given in relative form, e.g. "./config ../openssl", then a bug in Perl's abs2rel may trigger that directory- rewriting in __cwd results in wrong entries in %directories under certain circumstances, e.g. when a test executes run(app(["openssl"]) after indir. There should not be any need to go to a higher directory from BLDDIR or SRCDIR, so it should be OK to use them in their absolute form, also resolving all possible symlinks, right from the start. Following the File::Spec::Functions bug description (reported to perl.org): When abs2rel gets a path argument with ..s that are crossing over the ..s trailing the base argument, the result is wrong. Example PATH: /home/goal/test/.. BASE: /home/goal/test/../../base Good result: ../goal Bad result: ../.. Bug verified with File::Spec versions - 3.6301 - 3.74 (latest) Reviewed-by: Matt Caswell <matt@openssl.org> Reviewed-by: Richard Levitte <levitte@openssl.org> (Merged from #7031) (cherry picked from commit 7a20272)
diff --git a/util/perl/OpenSSL/Test.pm b/util/perl/OpenSSL/Test.pm
@@ -65,6 +65,7 @@ use File::Spec::Functions qw/file_name_is_absolute curdir canonpath splitdir
                              rel2abs/;
 use File::Path 2.00 qw/rmtree mkpath/;
 use File::Basename;
+use Cwd qw/abs_path/;
 
 my $level = 0;
 
@@ -869,8 +870,8 @@ failures will result in a C<BAIL_OUT> at the end of its run.
 sub __env {
     (my $recipe_datadir = basename($0)) =~ s/\.t$/_data/i;
 
-    $directories{SRCTOP}  = $ENV{SRCTOP} || $ENV{TOP};
-    $directories{BLDTOP}  = $ENV{BLDTOP} || $ENV{TOP};
+    $directories{SRCTOP}  = abs_path($ENV{SRCTOP} || $ENV{TOP});
+    $directories{BLDTOP}  = abs_path($ENV{BLDTOP} || $ENV{TOP});
     $directories{BLDAPPS} = $ENV{BIN_D}  || __bldtop_dir("apps");
     $directories{SRCAPPS} =                 __srctop_dir("apps");
     $directories{BLDFUZZ} =                 __bldtop_dir("fuzz");
