From e21891281000b8cfd1bed9719a22c52e1133ff9a Mon Sep 17 00:00:00 2001
From: Kang-min Liu <gugod@gugod.org>
Date: Sun, 22 Sep 2024 18:52:33 +0900
Subject: [PATCH] briefly check if current system looks might be incompatible
 with the given tarball url.

---
 lib/App/Perlbrew/Util.pm | 20 +++++++++++++++++-
 lib/App/perlbrew.pm      |  8 ++++++--
 t/util-looks-like.t      | 44 +++++++++++++++++++++++++++++++++++++++-
 3 files changed, 68 insertions(+), 4 deletions(-)

diff --git a/lib/App/Perlbrew/Util.pm b/lib/App/Perlbrew/Util.pm
index 15afffdf..1256a26e 100644
--- a/lib/App/Perlbrew/Util.pm
+++ b/lib/App/Perlbrew/Util.pm
@@ -5,7 +5,7 @@ use 5.008;
 
 use Exporter 'import';
 our @EXPORT = qw( uniq min editdist files_are_the_same perl_version_to_integer );
-our @EXPORT_OK = qw( find_similar_tokens looks_like_url_of_skaji_relocatable_perl );
+our @EXPORT_OK = qw( find_similar_tokens looks_like_url_of_skaji_relocatable_perl looks_like_sys_would_be_compatible_with_skaji_relocatable_perl );
 
 sub uniq {
     my %seen;
@@ -114,4 +114,22 @@ sub looks_like_url_of_skaji_relocatable_perl  {
     };
 }
 
+
+sub _arch_compat {
+    my ($arch) = @_;
+    my $compat = {
+        x86_64 => "amd64"
+    };
+    return $compat->{$arch} || $arch;
+}
+
+sub looks_like_sys_would_be_compatible_with_skaji_relocatable_perl {
+    my ($detail, $sys) = @_;
+
+    return (
+        ($detail->{os} eq $sys->os)
+        && (_arch_compat($detail->{arch}) eq _arch_compat($sys->arch))
+    );
+}
+
 1;
diff --git a/lib/App/perlbrew.pm b/lib/App/perlbrew.pm
index f546af0b..f12122c5 100644
--- a/lib/App/perlbrew.pm
+++ b/lib/App/perlbrew.pm
@@ -24,7 +24,7 @@ use JSON::PP qw( decode_json );
 use File::Copy qw( copy move );
 use Capture::Tiny ();
 
-use App::Perlbrew::Util qw( files_are_the_same uniq find_similar_tokens looks_like_url_of_skaji_relocatable_perl );
+use App::Perlbrew::Util qw( files_are_the_same uniq find_similar_tokens looks_like_url_of_skaji_relocatable_perl looks_like_sys_would_be_compatible_with_skaji_relocatable_perl);
 use App::Perlbrew::Path ();
 use App::Perlbrew::Path::Root ();
 use App::Perlbrew::HTTP qw( http_download http_get );
@@ -1231,7 +1231,11 @@ sub run_command_install {
     }
 
     if ( my $detail = looks_like_url_of_skaji_relocatable_perl($dist) ) {
-        return $self->do_install_skaji_relocatable_perl($detail);
+        if (looks_like_sys_would_be_compatible_with_skaji_relocatable_perl($detail, $self->sys)) {
+            return $self->do_install_skaji_relocatable_perl($detail);
+        } else {
+            die "ERROR: The given url points to a tarball for different os/arch.\n";
+        }
     }
 
     $self->{dist_name} = $dist;    # for help msg generation, set to non
diff --git a/t/util-looks-like.t b/t/util-looks-like.t
index 0cc40d38..16c9ab70 100644
--- a/t/util-looks-like.t
+++ b/t/util-looks-like.t
@@ -1,5 +1,5 @@
 use Test2::V0;
-use App::Perlbrew::Util qw(looks_like_url_of_skaji_relocatable_perl);
+use App::Perlbrew::Util qw(looks_like_url_of_skaji_relocatable_perl looks_like_sys_would_be_compatible_with_skaji_relocatable_perl);
 
 subtest "looks_like_url_of_skaji_relocatable_perl", sub {
     is(
@@ -29,4 +29,46 @@ subtest "looks_like_url_of_skaji_relocatable_perl", sub {
           );
 };
 
+subtest "looks_like_sys_would_be_compatible_with_skaji_relocatable_perl", sub {
+    my $detail = looks_like_url_of_skaji_relocatable_perl("https://github.com/skaji/relocatable-perl/releases/download/5.40.0.0/perl-linux-amd64.tar.gz");
+
+    my @positiveCases = (
+        (mock {} =>
+            add => [
+                os => sub { "linux" },
+                arch => sub { "amd64" },
+            ]),
+        (mock {} =>
+            add => [
+                os => sub { "linux" },
+                arch => sub { "x86_64" },
+            ]),
+    );
+
+    my @negativeCasse = (
+        (mock {} =>
+            add => [
+                os => sub { "linux" },
+                arch => sub { "arm64" },
+            ]),
+        (mock {} =>
+            add => [
+                os => sub { "darwin" },
+                arch => sub { "aarch64" },
+            ]),
+        (mock {} =>
+            add => [
+                os => sub { "darwin" },
+                arch => sub { "x86_64" },
+            ]),
+    );
+
+
+    is looks_like_sys_would_be_compatible_with_skaji_relocatable_perl($detail, $_), T()
+        for @positiveCases;
+
+    is looks_like_sys_would_be_compatible_with_skaji_relocatable_perl($detail, $_), F()
+        for @negativeCasse;
+};
+
 done_testing;