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-rwxr-xr-xgit-submodule.sh9
1 files changed, 9 insertions, 0 deletions
diff --git a/git-submodule.sh b/git-submodule.sh
index 25b1ddf..82e3558 100755
--- a/git-submodule.sh
+++ b/git-submodule.sh
@@ -22,6 +22,15 @@ require_work_tree
wt_prefix=$(git rev-parse --show-prefix)
cd_to_toplevel
+# Restrict ourselves to a vanilla subset of protocols; the URLs
+# we get are under control of a remote repository, and we do not
+# want them kicking off arbitrary git-remote-* programs.
+#
+# If the user has already specified a set of allowed protocols,
+# we assume they know what they're doing and use that instead.
+: ${GIT_ALLOW_PROTOCOL=file:git:http:https:ssh}
+export GIT_ALLOW_PROTOCOL
+
command=
branch=
force=