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git-fetch: resolve remote symrefs for HTTP transport

git-fetch validates that a remote ref resolves to a SHA1 prior to calling
git-http-fetch.  This adds support for resolving a few levels of symrefs
to get to the SHA1.

Signed-off-by: Nick Hengeveld <nickh@reactrix.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
maint
Nick Hengeveld 19 years ago committed by Junio C Hamano
parent
commit
093b068891
  1. 16
      git-fetch.sh

16
git-fetch.sh

@ -270,14 +270,22 @@ fetch_main () { @@ -270,14 +270,22 @@ fetch_main () {
if [ -n "$GIT_SSL_NO_VERIFY" ]; then
curl_extra_args="-k"
fi
remote_name_quoted=$(perl -e '
max_depth=5
depth=0
head="ref: $remote_name"
while (expr "z$head" : "zref:" && expr $depth \< $max_depth) >/dev/null
do
remote_name_quoted=$(perl -e '
my $u = $ARGV[0];
$u =~ s/^ref:\s*//;
$u =~ s{([^-a-zA-Z0-9/.])}{sprintf"%%%02x",ord($1)}eg;
print "$u";
' "$remote_name")
head=$(curl -nsfL $curl_extra_args "$remote/$remote_name_quoted") &&
' "$head")
head=$(curl -nsfL $curl_extra_args "$remote/$remote_name_quoted")
depth=$( expr \( $depth + 1 \) )
done
expr "z$head" : "z$_x40\$" >/dev/null ||
die "Failed to fetch $remote_name from $remote"
die "Failed to fetch $remote_name from $remote"
echo >&2 Fetching "$remote_name from $remote" using http
git-http-fetch -v -a "$head" "$remote/" || exit
;;

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