[openwrt/openwrt] scripts/download.pl: fix support for aria2c download tool on macos

[LEDE Commits]

ansuel pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/f1b3958d02ba8b8a8bf2182599653ddd553906a8

commit f1b3958d02ba8b8a8bf2182599653ddd553906a8
Author: Christian Marangi <ansuelsmth at gmail.com>
AuthorDate: Mon Sep 26 20:48:25 2022 +0200

    scripts/download.pl: fix support for aria2c download tool on macos
    
    Currently we use /dev/shm to place aria2c tmp file. This is not present
    on macos. Use the openwrt tmp directory instead of the linux-only
    /dev/shm to save compatibility with more os.
    
    Fixes: d39123626931 ("download.pl: add aria2c support")
    Signed-off-by: Christian Marangi <ansuelsmth at gmail.com>
---
 scripts/download.pl | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/scripts/download.pl b/scripts/download.pl
index 51a816cff4..ad4fde7333 100755
--- a/scripts/download.pl
+++ b/scripts/download.pl
@@ -78,7 +78,7 @@ sub download_cmd {
 	my $additional_mirrors = join(" ", map "$_/$filename", @_);
 
 	my @chArray = ('a'..'z', 'A'..'Z', 0..9);
-	my $rfn = join '', map{ $chArray[int rand @chArray] } 0..9;
+	my $rfn = join '', "${filename}_", map{ $chArray[int rand @chArray] } 0..9;
 	if (open CURL, '-|', 'curl', '--version') {
 		if (defined(my $line = readline CURL)) {
 			$have_curl = 1 if $line =~ /^curl /;
@@ -94,13 +94,15 @@ sub download_cmd {
 
 	if ($have_aria2c) {
 		@mirrors=();
-		return join(" ", "touch /dev/shm/${rfn}_spp;",
+		return join(" ", "[ -d $ENV{'TMPDIR'}/aria2c ] || mkdir $ENV{'TMPDIR'}/aria2c;",
+			"touch $ENV{'TMPDIR'}/aria2c/${rfn}_spp;",
 			qw(aria2c --stderr -c -x2 -s10 -j10 -k1M), $url, $additional_mirrors,
 			$check_certificate ? () : '--check-certificate=false',
-			"--server-stat-of=/dev/shm/${rfn}_spp",
-			"--server-stat-if=/dev/shm/${rfn}_spp",
-			"-d /dev/shm -o $rfn;",
-			"cat /dev/shm/$rfn;", "rm /dev/shm/$rfn /dev/shm/${rfn}_spp");
+			"--server-stat-of=$ENV{'TMPDIR'}/aria2c/${rfn}_spp",
+			"--server-stat-if=$ENV{'TMPDIR'}/aria2c/${rfn}_spp",
+			"-d $ENV{'TMPDIR'}/aria2c -o $rfn;",
+			"cat $ENV{'TMPDIR'}/aria2c/$rfn;",
+			"rm $ENV{'TMPDIR'}/aria2c/$rfn $ENV{'TMPDIR'}/aria2c/${rfn}_spp");
 	} elsif ($have_curl) {
 		return (qw(curl -f --connect-timeout 20 --retry 5 --location),
 			$check_certificate ? () : '--insecure',