t5550: break submodule config test into multiple sub-tests

diff --git a/builtin/submodule--helper.c b/builtin/submodule--helper.c
index 3c4d3ff7f4af6874f9ab9004bedb8690f3c4ac72..3d37c3f1822db14d376a19afd443c3082e8c5a8e 100644 (file)
--- a/builtin/submodule--helper.c
+++ b/builtin/submodule--helper.c
@@ -124,6 +124,55 @@ static int module_name(int argc, const char **argv, const char *prefix)
 
        return 0;
 }
+
+/*
+ * Rules to sanitize configuration variables that are Ok to be passed into
+ * submodule operations from the parent project using "-c". Should only
+ * include keys which are both (a) safe and (b) necessary for proper
+ * operation.
+ */
+static int submodule_config_ok(const char *var)
+{
+       if (starts_with(var, "credential."))
+               return 1;
+       return 0;
+}
+
+static int sanitize_submodule_config(const char *var, const char *value, void *data)
+{
+       struct strbuf *out = data;
+
+       if (submodule_config_ok(var)) {
+               if (out->len)
+                       strbuf_addch(out, ' ');
+
+               if (value)
+                       sq_quotef(out, "%s=%s", var, value);
+               else
+                       sq_quote_buf(out, var);
+       }
+
+       return 0;
+}
+
+static void prepare_submodule_repo_env(struct argv_array *out)
+{
+       const char * const *var;
+
+       for (var = local_repo_env; *var; var++) {
+               if (!strcmp(*var, CONFIG_DATA_ENVIRONMENT)) {
+                       struct strbuf sanitized_config = STRBUF_INIT;
+                       git_config_from_parameters(sanitize_submodule_config,
+                                                  &sanitized_config);
+                       argv_array_pushf(out, "%s=%s", *var, sanitized_config.buf);
+                       strbuf_release(&sanitized_config);
+               } else {
+                       argv_array_push(out, *var);
+               }
+       }
+
+}
+
 static int clone_submodule(const char *path, const char *gitdir, const char *url,
                           const char *depth, const char *reference, int quiet)
 {
@@ -145,7 +194,7 @@ static int clone_submodule(const char *path, const char *gitdir, const char *url
        argv_array_push(&cp.args, path);
 
        cp.git_cmd = 1;
-       cp.env = local_repo_env;
+       prepare_submodule_repo_env(&cp.env_array);
        cp.no_stdin = 1;
 
        return run_command(&cp);
@@ -186,15 +235,15 @@ static int module_clone(int argc, const char **argv, const char *prefix)
 
        const char *const git_submodule_helper_usage[] = {
                N_("git submodule--helper clone [--prefix=<path>] [--quiet] "
-                  "[--reference <repository>] [--name <name>] [--url <url>]"
-                  "[--depth <depth>] [--path <path>]"),
+                  "[--reference <repository>] [--name <name>] [--depth <depth>] "
+                  "--url <url> --path <path>"),
                NULL
        };
 
        argc = parse_options(argc, argv, prefix, module_clone_options,
                             git_submodule_helper_usage, 0);
 
-       if (argc)
+       if (argc || !url || !path)
                usage_with_options(git_submodule_helper_usage,
                                   module_clone_options);
 
@@ -259,6 +308,22 @@ static int module_clone(int argc, const char **argv, const char *prefix)
        return 0;
 }
 
+static int module_sanitize_config(int argc, const char **argv, const char *prefix)
+{
+       struct strbuf sanitized_config = STRBUF_INIT;
+
+       if (argc > 1)
+               usage(_("git submodule--helper sanitize-config"));
+
+       git_config_from_parameters(sanitize_submodule_config, &sanitized_config);
+       if (sanitized_config.len)
+               printf("%s\n", sanitized_config.buf);
+
+       strbuf_release(&sanitized_config);
+
+       return 0;
+}
+
 struct cmd_struct {
        const char *cmd;
        int (*fn)(int, const char **, const char *);
@@ -268,6 +333,7 @@ static struct cmd_struct commands[] = {
        {"list", module_list},
        {"name", module_name},
        {"clone", module_clone},
+       {"sanitize-config", module_sanitize_config},
 };
 
 int cmd_submodule__helper(int argc, const char **argv, const char *prefix)