submodule: use prepare_submodule_repo_env consistently

Before 14111fc (git: submodule honor -c credential.* from
command line, 2016-02-29), it was sufficient for code which
spawned a process in a submodule to just set the child
process's "env" field to "local_repo_env" to clear the
environment of any repo-specific variables.

That commit introduced a more complicated procedure, in
which we clear most variables but allow through sanitized
config. For C code, we used that procedure only for cloning,
but not for any of the programs spawned by submodule.c. As a
result, things like "git fetch --recurse-submodules" behave
differently than "git clone --recursive"; the former will
not pass through the sanitized config.

We can fix this by using prepare_submodule_repo_env()
everywhere in submodule.c.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/submodule.c b/submodule.c
index 24e8182f5937a2602b90ae73790eca04cb1ab51f..c18ab9b3977e511f695770aafa43b11d0a673e63 100644 (file)
--- a/submodule.c
+++ b/submodule.c
@@ -367,7 +367,7 @@ static int submodule_needs_pushing(const char *path, const unsigned char sha1[20
 
                argv[1] = sha1_to_hex(sha1);
                cp.argv = argv;
-               cp.env = local_repo_env;
+               prepare_submodule_repo_env(&cp.env_array);
                cp.git_cmd = 1;
                cp.no_stdin = 1;
                cp.out = -1;
@@ -454,7 +454,7 @@ static int push_submodule(const char *path)
                const char *argv[] = {"push", NULL};
 
                cp.argv = argv;
-               cp.env = local_repo_env;
+               prepare_submodule_repo_env(&cp.env_array);
                cp.git_cmd = 1;
                cp.no_stdin = 1;
                cp.dir = path;
@@ -500,7 +500,7 @@ static int is_submodule_commit_present(const char *path, unsigned char sha1[20])
 
                argv[3] = sha1_to_hex(sha1);
                cp.argv = argv;
-               cp.env = local_repo_env;
+               prepare_submodule_repo_env(&cp.env_array);
                cp.git_cmd = 1;
                cp.no_stdin = 1;
                cp.dir = path;
@@ -683,7 +683,7 @@ static int get_next_submodule(struct child_process *cp,
                if (is_directory(git_dir)) {
                        child_process_init(cp);
                        cp->dir = strbuf_detach(&submodule_path, NULL);
-                       cp->env = local_repo_env;
+                       prepare_submodule_repo_env(&cp->env_array);
                        cp->git_cmd = 1;
                        if (!spf->quiet)
                                strbuf_addf(err, "Fetching submodule %s%s\n",
@@ -796,7 +796,7 @@ unsigned is_submodule_modified(const char *path, int ignore_untracked)
                argv[2] = "-uno";
 
        cp.argv = argv;
-       cp.env = local_repo_env;
+       prepare_submodule_repo_env(&cp.env_array);
        cp.git_cmd = 1;
        cp.no_stdin = 1;
        cp.out = -1;
@@ -857,7 +857,7 @@ int submodule_uses_gitfile(const char *path)
 
        /* Now test that all nested submodules use a gitfile too */
        cp.argv = argv;
-       cp.env = local_repo_env;
+       prepare_submodule_repo_env(&cp.env_array);
        cp.git_cmd = 1;
        cp.no_stdin = 1;
        cp.no_stderr = 1;
@@ -890,7 +890,7 @@ int ok_to_remove_submodule(const char *path)
                return 0;
 
        cp.argv = argv;
-       cp.env = local_repo_env;
+       prepare_submodule_repo_env(&cp.env_array);
        cp.git_cmd = 1;
        cp.no_stdin = 1;
        cp.out = -1;

diff --git a/t/t5550-http-fetch-dumb.sh b/t/t5550-http-fetch-dumb.sh
index 13ac788fde736002bccbf526cd06eef5594db814..3484b6f0f3cf04a9cf831a5d91c31486efebcc38 100755 (executable)
--- a/t/t5550-http-fetch-dumb.sh
+++ b/t/t5550-http-fetch-dumb.sh
@@ -112,6 +112,17 @@ test_expect_success 'cmdline credential config passes to submodule via clone' '
        expect_askpass pass user@host
 '
 
+test_expect_success 'cmdline credential config passes submodule via fetch' '
+       set_askpass wrong pass@host &&
+       test_must_fail git -C super-clone fetch --recurse-submodules &&
+
+       set_askpass wrong pass@host &&
+       git -C super-clone \
+           -c "credential.$HTTPD_URL.username=user@host" \
+           fetch --recurse-submodules &&
+       expect_askpass pass user@host
+'
+
 test_expect_success 'cmdline credential config passes submodule update' '
        # advance the submodule HEAD so that a fetch is required
        git commit --allow-empty -m foo &&