[PATCH 1/2] Revert "clone: prevent hooks from running during a clone"

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From: "brian m. carlson" <bk2204@xxxxxxxxxx>

This change breaks Git LFS, which relies on the pre-checkout hook to run
in a clone.  This is to allow files which have the lockable attribute,
which are usually large binary assets which cannot be merged, to
be marked read-only when a user doesn't have a lock so as to prevent
conflicts.

Revert this change since it causes functional problems.

This reverts commit 8db1e8743c0f1ed241f6a1b8bf55b6fef07d6751.

Signed-off-by: brian m. carlson <bk2204@xxxxxxxxxx>
---
 builtin/clone.c  |  5 -----
 hook.c           | 32 ------------------------------
 t/t5601-clone.sh | 51 ------------------------------------------------
 3 files changed, 88 deletions(-)

diff --git a/builtin/clone.c b/builtin/clone.c
index 0e7cf198f5..c66a32feb3 100644
--- a/builtin/clone.c
+++ b/builtin/clone.c
@@ -987,12 +987,7 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
 		usage_msg_opt(_("You must specify a repository to clone."),
 			builtin_clone_usage, builtin_clone_options);
 
-	xsetenv("GIT_CLONE_PROTECTION_ACTIVE", "true", 0 /* allow user override */);
 	template_dir = get_template_dir(option_template);
-	if (*template_dir && !is_absolute_path(template_dir))
-		template_dir = template_dir_dup =
-			absolute_pathdup(template_dir);
-	xsetenv("GIT_CLONE_TEMPLATE_DIR", template_dir, 1);
 
 	if (option_depth || option_since || option_not.nr)
 		deepen = 1;
diff --git a/hook.c b/hook.c
index eebc4d4473..f5f46e844e 100644
--- a/hook.c
+++ b/hook.c
@@ -11,30 +11,6 @@
 #include "setup.h"
 #include "copy.h"
 
-static int identical_to_template_hook(const char *name, const char *path)
-{
-	const char *env = getenv("GIT_CLONE_TEMPLATE_DIR");
-	const char *template_dir = get_template_dir(env && *env ? env : NULL);
-	struct strbuf template_path = STRBUF_INIT;
-	int found_template_hook, ret;
-
-	strbuf_addf(&template_path, "%s/hooks/%s", template_dir, name);
-	found_template_hook = access(template_path.buf, X_OK) >= 0;
-#ifdef STRIP_EXTENSION
-	if (!found_template_hook) {
-		strbuf_addstr(&template_path, STRIP_EXTENSION);
-		found_template_hook = access(template_path.buf, X_OK) >= 0;
-	}
-#endif
-	if (!found_template_hook)
-		return 0;
-
-	ret = do_files_match(template_path.buf, path);
-
-	strbuf_release(&template_path);
-	return ret;
-}
-
 const char *find_hook(const char *name)
 {
 	static struct strbuf path = STRBUF_INIT;
@@ -70,14 +46,6 @@ const char *find_hook(const char *name)
 		}
 		return NULL;
 	}
-	if (!git_hooks_path && git_env_bool("GIT_CLONE_PROTECTION_ACTIVE", 0) &&
-	    !identical_to_template_hook(name, path.buf))
-		die(_("active `%s` hook found during `git clone`:\n\t%s\n"
-		      "For security reasons, this is disallowed by default.\n"
-		      "If this is intentional and the hook should actually "
-		      "be run, please\nrun the command again with "
-		      "`GIT_CLONE_PROTECTION_ACTIVE=false`"),
-		    name, path.buf);
 	return path.buf;
 }
 
diff --git a/t/t5601-clone.sh b/t/t5601-clone.sh
index deb1c282c7..cc0b953f14 100755
--- a/t/t5601-clone.sh
+++ b/t/t5601-clone.sh
@@ -788,57 +788,6 @@ test_expect_success 'batch missing blob request does not inadvertently try to fe
 	git clone --filter=blob:limit=0 "file://$(pwd)/server" client
 '
 
-test_expect_success 'clone with init.templatedir runs hooks' '
-	git init tmpl/hooks &&
-	write_script tmpl/hooks/post-checkout <<-EOF &&
-	echo HOOK-RUN >&2
-	echo I was here >hook.run
-	EOF
-	git -C tmpl/hooks add . &&
-	test_tick &&
-	git -C tmpl/hooks commit -m post-checkout &&
-
-	test_when_finished "git config --global --unset init.templateDir || :" &&
-	test_when_finished "git config --unset init.templateDir || :" &&
-	(
-		sane_unset GIT_TEMPLATE_DIR &&
-		NO_SET_GIT_TEMPLATE_DIR=t &&
-		export NO_SET_GIT_TEMPLATE_DIR &&
-
-		git -c core.hooksPath="$(pwd)/tmpl/hooks" \
-			clone tmpl/hooks hook-run-hookspath 2>err &&
-		test_grep ! "active .* hook found" err &&
-		test_path_is_file hook-run-hookspath/hook.run &&
-
-		git -c init.templateDir="$(pwd)/tmpl" \
-			clone tmpl/hooks hook-run-config 2>err &&
-		test_grep ! "active .* hook found" err &&
-		test_path_is_file hook-run-config/hook.run &&
-
-		git clone --template=tmpl tmpl/hooks hook-run-option 2>err &&
-		test_grep ! "active .* hook found" err &&
-		test_path_is_file hook-run-option/hook.run &&
-
-		git config --global init.templateDir "$(pwd)/tmpl" &&
-		git clone tmpl/hooks hook-run-global-config 2>err &&
-		git config --global --unset init.templateDir &&
-		test_grep ! "active .* hook found" err &&
-		test_path_is_file hook-run-global-config/hook.run &&
-
-		# clone ignores local `init.templateDir`; need to create
-		# a new repository because we deleted `.git/` in the
-		# `setup` test case above
-		git init local-clone &&
-		cd local-clone &&
-
-		git config init.templateDir "$(pwd)/../tmpl" &&
-		git clone ../tmpl/hooks hook-run-local-config 2>err &&
-		git config --unset init.templateDir &&
-		test_grep ! "active .* hook found" err &&
-		test_path_is_missing hook-run-local-config/hook.run
-	)
-'
-
 . "$TEST_DIRECTORY"/lib-httpd.sh
 start_httpd
 




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