Source Mage code commit list

[Ismael Luceno <scm AT sourcemage.org>]

GIT changes to master sorcery by Ismael Luceno <ismael AT sourcemage.org>:

 var/lib/sorcery/modules/libunpack |   24 ++++++++++++++++++------
 1 file changed, 18 insertions(+), 6 deletions(-)

New commits:
commit cbd21858672fde7fa02a4abbabea37e98e8022b8
Author: Ismael Luceno <ismael AT sourcemage.org>
Commit: Ismael Luceno <ismael AT sourcemage.org>

    libunpack: Improve tarball extraction
    
    Add support for pax and for other implementations of tar.
    
    Also use tar's -f flag explicitly; it turns out it is required; the
    default source may be something other than stdin.
    
    Fixes: c8e014492903 ("libunpack: Use stdin only implicitly by tar")

diff --git a/var/lib/sorcery/modules/libunpack 
b/var/lib/sorcery/modules/libunpack
index c80905f..1eb7338 100755
--- a/var/lib/sorcery/modules/libunpack
+++ b/var/lib/sorcery/modules/libunpack
@@ -214,17 +214,29 @@ uncompress_core() {
 ## Note: zip is a special case because it doesn't work with streams.
 ##
 #---------------------------------------------------------------------
+
+# Find any viable way to extract a tarball
+for i in pax paxtar tar gtar gnutar bsdtar star busybox toybox; do
+  type "$i" || continue
+  case "$i" in
+      pax)
+         untar(){ pax -r; } ;;
+      busybox|toybox)
+         i+=' tar' ;&
+      tar|gtar|gnutar)
+         i+=' --no-same-permission' ;&
+      *)
+         eval 'untar(){' "$i" '-xof -; }' ;;
+  esac
+  break
+done >/dev/null 2>&1
+
 unpack_core() {
   debug "libgrimoire" "unpack_core - $*"
 
   case  "$2"  in
             bzip2|gzip|compress*|tar|XZ|xz|LZMA)
-                    if real_list_find "$3" same-permissions; then
-                      tar -x 2> /dev/null
-                    else
-                      tar --no-same-owner --no-same-permissions -x \
-                      2> /dev/null
-                    fi || cat > /dev/null ;;
+                    untar 2>/dev/null || cat > /dev/null ;;
               Zip)  cat /dev/stdin >/dev/null   #get rid of unused output
                     unzip  -q  "$1"                                    ;;
             7-zip)  cat /dev/stdin >/dev/null   #get rid of unused output