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-rw-r--r--source4/lib/registry/dir.c60
-rw-r--r--source4/lib/registry/ldb.c143
-rw-r--r--source4/lib/registry/regf.c53
-rw-r--r--source4/lib/registry/tests/hive.c37
4 files changed, 256 insertions, 37 deletions
diff --git a/source4/lib/registry/dir.c b/source4/lib/registry/dir.c
index 27cae8c490..dc3717e886 100644
--- a/source4/lib/registry/dir.c
+++ b/source4/lib/registry/dir.c
@@ -55,18 +55,66 @@ static WERROR reg_dir_add_key(TALLOC_CTX *mem_ctx,
return WERR_GENERAL_FAILURE;
}
+static WERROR reg_dir_delete_recursive(const char *name)
+{
+ DIR *d;
+ struct dirent *e;
+ WERROR werr;
+
+ d = opendir(name);
+ if (d == NULL) {
+ DEBUG(3,("Unable to open '%s': %s\n", name,
+ strerror(errno)));
+ return WERR_BADFILE;
+ }
+
+ while((e = readdir(d))) {
+ char *path;
+ struct stat stbuf;
+
+ if (ISDOT(e->d_name) || ISDOTDOT(e->d_name))
+ continue;
+
+ path = talloc_asprintf(name, "%s/%s", name, e->d_name);
+ if (!path)
+ return WERR_NOMEM;
+
+ stat(path, &stbuf);
+
+ if (!S_ISDIR(stbuf.st_mode)) {
+ if (unlink(path) < 0) {
+ talloc_free(path);
+ closedir(d);
+ return WERR_GENERAL_FAILURE;
+ }
+ } else {
+ werr = reg_dir_delete_recursive(path);
+ if (!W_ERROR_IS_OK(werr)) {
+ talloc_free(path);
+ closedir(d);
+ return werr;
+ }
+ }
+
+ talloc_free(path);
+ }
+ closedir(d);
+
+ if (rmdir(name) == 0)
+ return WERR_OK;
+ else if (errno == ENOENT)
+ return WERR_BADFILE;
+ else
+ return WERR_GENERAL_FAILURE;
+}
+
static WERROR reg_dir_del_key(const struct hive_key *k, const char *name)
{
struct dir_key *dk = talloc_get_type(k, struct dir_key);
char *child = talloc_asprintf(NULL, "%s/%s", dk->path, name);
WERROR ret;
- if (rmdir(child) == 0)
- ret = WERR_OK;
- else if (errno == ENOENT)
- ret = WERR_BADFILE;
- else
- ret = WERR_GENERAL_FAILURE;
+ ret = reg_dir_delete_recursive(child);
talloc_free(child);
diff --git a/source4/lib/registry/ldb.c b/source4/lib/registry/ldb.c
index dfd368ea80..a764ca6235 100644
--- a/source4/lib/registry/ldb.c
+++ b/source4/lib/registry/ldb.c
@@ -442,33 +442,6 @@ static WERROR ldb_add_key(TALLOC_CTX *mem_ctx, const struct hive_key *parent,
return WERR_OK;
}
-static WERROR ldb_del_key(const struct hive_key *key, const char *name)
-{
- int ret;
- struct ldb_key_data *parentkd = talloc_get_type(key, struct ldb_key_data);
- struct ldb_dn *ldap_path;
- TALLOC_CTX *mem_ctx = talloc_init("ldb_del_key");
-
- ldap_path = reg_path_to_ldb(mem_ctx, key, name, NULL);
-
- ret = ldb_delete(parentkd->ldb, ldap_path);
-
- talloc_free(mem_ctx);
-
- if (ret == LDB_ERR_NO_SUCH_OBJECT) {
- return WERR_BADFILE;
- } else if (ret != LDB_SUCCESS) {
- DEBUG(1, ("ldb_del_key: %s\n", ldb_errstring(parentkd->ldb)));
- return WERR_FOOBAR;
- }
-
- /* reset cache */
- talloc_free(parentkd->subkeys);
- parentkd->subkeys = NULL;
-
- return WERR_OK;
-}
-
static WERROR ldb_del_value (struct hive_key *key, const char *child)
{
int ret;
@@ -501,6 +474,122 @@ static WERROR ldb_del_value (struct hive_key *key, const char *child)
return WERR_OK;
}
+static WERROR ldb_del_key(const struct hive_key *key, const char *name)
+{
+ int i, ret;
+ struct ldb_key_data *parentkd = talloc_get_type(key, struct ldb_key_data);
+ struct ldb_dn *ldap_path;
+ TALLOC_CTX *mem_ctx = talloc_init("ldb_del_key");
+ struct ldb_context *c = parentkd->ldb;
+ struct ldb_result *res_keys;
+ struct ldb_result *res_vals;
+ WERROR werr;
+ struct hive_key *hk;
+
+ /* Verify key exists by opening it */
+ werr = ldb_open_key(mem_ctx, key, name, &hk);
+ if (!W_ERROR_IS_OK(werr)) {
+ talloc_free(mem_ctx);
+ return werr;
+ }
+
+ ldap_path = reg_path_to_ldb(mem_ctx, key, name, NULL);
+ if (!ldap_path) {
+ talloc_free(mem_ctx);
+ return WERR_FOOBAR;
+ }
+
+ /* Search for subkeys */
+ ret = ldb_search(c, ldap_path, LDB_SCOPE_ONELEVEL,
+ "(key=*)", NULL, &res_keys);
+
+ if (ret != LDB_SUCCESS) {
+ DEBUG(0, ("Error getting subkeys for '%s': %s\n",
+ ldb_dn_get_linearized(ldap_path), ldb_errstring(c)));
+ talloc_free(mem_ctx);
+ return WERR_FOOBAR;
+ }
+
+ /* Search for values */
+ ret = ldb_search(c, ldap_path, LDB_SCOPE_ONELEVEL,
+ "(value=*)", NULL, &res_vals);
+
+ if (ret != LDB_SUCCESS) {
+ DEBUG(0, ("Error getting values for '%s': %s\n",
+ ldb_dn_get_linearized(ldap_path), ldb_errstring(c)));
+ talloc_free(mem_ctx);
+ return WERR_FOOBAR;
+ }
+
+ /* Start an explicit transaction */
+ ret = ldb_transaction_start(c);
+
+ if (ret != LDB_SUCCESS) {
+ DEBUG(0, ("ldb_transaction_start: %s\n", ldb_errstring(c)));
+ talloc_free(mem_ctx);
+ return WERR_FOOBAR;
+ }
+
+ if (res_keys->count || res_vals->count)
+ {
+ /* Delete any subkeys */
+ for (i = 0; i < res_keys->count; i++)
+ {
+ werr = ldb_del_key(hk, ldb_msg_find_attr_as_string(
+ res_keys->msgs[i],
+ "key", NULL));
+ if (!W_ERROR_IS_OK(werr)) {
+ ret = ldb_transaction_cancel(c);
+ talloc_free(mem_ctx);
+ return werr;
+ }
+ }
+
+ /* Delete any values */
+ for (i = 0; i < res_vals->count; i++)
+ {
+ werr = ldb_del_value(hk, ldb_msg_find_attr_as_string(
+ res_vals->msgs[i],
+ "value", NULL));
+ if (!W_ERROR_IS_OK(werr)) {
+ ret = ldb_transaction_cancel(c);
+ talloc_free(mem_ctx);
+ return werr;
+ }
+ }
+ }
+
+ /* Delete the key itself */
+ ret = ldb_delete(c, ldap_path);
+
+ if (ret != LDB_SUCCESS)
+ {
+ DEBUG(1, ("ldb_del_key: %s\n", ldb_errstring(c)));
+ ret = ldb_transaction_cancel(c);
+ talloc_free(mem_ctx);
+ return WERR_FOOBAR;
+ }
+
+ /* Commit the transaction */
+ ret = ldb_transaction_commit(c);
+
+ if (ret != LDB_SUCCESS)
+ {
+ DEBUG(0, ("ldb_transaction_commit: %s\n", ldb_errstring(c)));
+ ret = ldb_transaction_cancel(c);
+ talloc_free(mem_ctx);
+ return WERR_FOOBAR;
+ }
+
+ talloc_free(mem_ctx);
+
+ /* reset cache */
+ talloc_free(parentkd->subkeys);
+ parentkd->subkeys = NULL;
+
+ return WERR_OK;
+}
+
static WERROR ldb_set_value(struct hive_key *parent,
const char *name, uint32_t type,
const DATA_BLOB data)
diff --git a/source4/lib/registry/regf.c b/source4/lib/registry/regf.c
index cf3e564c0e..a192f3be4d 100644
--- a/source4/lib/registry/regf.c
+++ b/source4/lib/registry/regf.c
@@ -1618,10 +1618,55 @@ static WERROR regf_del_key(const struct hive_key *parent, const char *name)
return WERR_BADFILE;
}
- if (key->nk->subkeys_offset != -1 ||
- key->nk->values_offset != -1) {
- DEBUG(0, ("Key '%s' is not empty.\n", name));
- return WERR_FILE_EXISTS;
+ if (key->nk->subkeys_offset != -1) {
+ char *sk_name;
+ struct hive_key *sk = (struct hive_key *)key;
+ int i = key->nk->num_subkeys;
+ while (i--) {
+ /* Get subkey information. */
+ error = regf_get_subkey_by_index(parent_nk, sk, 0,
+ (const char **)&sk_name,
+ NULL, NULL);
+ if (!W_ERROR_IS_OK(error)) {
+ DEBUG(0, ("Can't retrieve subkey by index.\n"));
+ return error;
+ }
+
+ /* Delete subkey. */
+ error = regf_del_key(sk, sk_name);
+ if (!W_ERROR_IS_OK(error)) {
+ DEBUG(0, ("Can't delete key '%s'.\n", sk_name));
+ return error;
+ }
+
+ talloc_free(sk_name);
+ }
+ }
+
+ if (key->nk->values_offset != -1) {
+ char *val_name;
+ struct hive_key *sk = (struct hive_key *)key;
+ DATA_BLOB data;
+ int i = key->nk->num_values;
+ while (i--) {
+ /* Get value information. */
+ error = regf_get_value(parent_nk, sk, 0,
+ (const char **)&val_name,
+ NULL, &data);
+ if (!W_ERROR_IS_OK(error)) {
+ DEBUG(0, ("Can't retrieve value by index.\n"));
+ return error;
+ }
+
+ /* Delete value. */
+ error = regf_del_value(sk, val_name);
+ if (!W_ERROR_IS_OK(error)) {
+ DEBUG(0, ("Can't delete value '%s'.\n", val_name));
+ return error;
+ }
+
+ talloc_free(val_name);
+ }
}
/* Delete it from the subkey list. */
diff --git a/source4/lib/registry/tests/hive.c b/source4/lib/registry/tests/hive.c
index 1dcb464d80..1e56f125c5 100644
--- a/source4/lib/registry/tests/hive.c
+++ b/source4/lib/registry/tests/hive.c
@@ -111,6 +111,38 @@ static bool test_add_subkey(struct torture_context *tctx,
return true;
}
+static bool test_del_recursive(struct torture_context *tctx,
+ const void *test_data)
+{
+ WERROR error;
+ struct hive_key *subkey;
+ struct hive_key *subkey2;
+ const struct hive_key *root = (const struct hive_key *)test_data;
+ TALLOC_CTX *mem_ctx = tctx;
+ uint32_t data = 42;
+
+ /* Create a new key under the root */
+ error = hive_key_add_name(mem_ctx, root, "Parent Key", NULL,
+ NULL, &subkey);
+ torture_assert_werr_ok(tctx, error, "hive_key_add_name");
+
+ /* Create a new key under "Parent Key" */
+ error = hive_key_add_name(mem_ctx, subkey, "Child Key", NULL,
+ NULL, &subkey2);
+ torture_assert_werr_ok(tctx, error, "hive_key_add_name");
+
+ /* Create a new value under "Child Key" */
+ error = hive_key_set_value(subkey2, "Answer Recursive", REG_DWORD,
+ data_blob_talloc(mem_ctx, &data, sizeof(data)));
+ torture_assert_werr_ok(tctx, error, "hive_key_set_value");
+
+ /* Deleting "Parent Key" will also delete "Child Key" and the value. */
+ error = hive_key_del(root, "Parent Key");
+ torture_assert_werr_ok(tctx, error, "hive_key_del");
+
+ return true;
+}
+
static bool test_flush_key(struct torture_context *tctx, void *test_data)
{
struct hive_key *root = (struct hive_key *)test_data;
@@ -273,6 +305,11 @@ static void tcase_add_tests(struct torture_tcase *tcase)
test_add_subkey);
torture_tcase_add_simple_test(tcase, "flush_key",
test_flush_key);
+ /* test_del_recursive() test must run before test_keyinfo_root().
+ test_keyinfo_root() checks the number of subkeys, which verifies
+ the recursive delete worked properly. */
+ torture_tcase_add_simple_test_const(tcase, "del_recursive",
+ test_del_recursive);
torture_tcase_add_simple_test_const(tcase, "get_info",
test_keyinfo_root);
torture_tcase_add_simple_test(tcase, "get_info_nums",
generated by cgit (git 2.34.1) at 2024-12-11 20:50:33 +0000