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-rw-r--r--source3/registry/reg_backend_db.c196
1 files changed, 141 insertions, 55 deletions
diff --git a/source3/registry/reg_backend_db.c b/source3/registry/reg_backend_db.c
index b306b2cf39..06251e01f9 100644
--- a/source3/registry/reg_backend_db.c
+++ b/source3/registry/reg_backend_db.c
@@ -26,6 +26,7 @@
#include "registry.h"
#include "reg_db.h"
#include "reg_util_internal.h"
+#include "reg_parse_internal.h"
#include "reg_backend_db.h"
#include "reg_objects.h"
#include "nt_printing.h"
@@ -516,22 +517,104 @@ done:
return werr;
}
+static bool tdb_data_read_uint32(TDB_DATA *buf, uint32_t *result)
+{
+ const size_t len = sizeof(uint32_t);
+ if (buf->dsize >= len) {
+ *result = IVAL(buf->dptr, 0);
+ buf->dptr += len;
+ buf->dsize -= len;
+ return true;
+ }
+ return false;
+}
+
+static bool tdb_data_read_cstr(TDB_DATA *buf, char **result)
+{
+ const size_t len = strnlen((char*)buf->dptr, buf->dsize) + 1;
+ if (buf->dsize >= len) {
+ *result = (char*)buf->dptr;
+ buf->dptr += len;
+ buf->dsize -= len;
+ return true;
+ }
+ return false;
+}
+
+static bool tdb_data_is_empty(TDB_DATA d) {
+ return (d.dptr == NULL) || (d.dsize == 0);
+}
+
+static bool tdb_data_is_cstr(TDB_DATA d) {
+ if (tdb_data_is_empty(d) || (d.dptr[d.dsize-1] != '\0')) {
+ return false;
+ }
+ return rawmemchr(d.dptr, '\0') == &d.dptr[d.dsize-1];
+}
+
+static bool upgrade_v2_to_v3_check_subkeylist(struct db_context *db,
+ const char *key,
+ const char *subkey)
+{
+ static uint32_t zero = 0;
+ static TDB_DATA empty_subkey_list = {
+ .dptr = (unsigned char*)&zero,
+ .dsize = sizeof(uint32_t),
+ };
+ bool success = false;
+ char *path = talloc_asprintf(talloc_tos(), "%s\\%s", key, subkey);
+ strupper_m(path);
+
+ if (!dbwrap_exists(db, string_term_tdb_data(path))) {
+ NTSTATUS status;
+
+ DEBUG(10, ("regdb_upgrade_v2_to_v3: writing subkey list [%s]\n",
+ path));
+
+ status = dbwrap_store_bystring(db, path, empty_subkey_list,
+ TDB_INSERT);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0, ("regdb_upgrade_v2_to_v3: writing subkey list "
+ "[%s] failed\n", path));
+ goto done;
+ }
+ }
+ success = true;
+done:
+ talloc_free(path);
+ return success;
+}
+
+static bool upgrade_v2_to_v3_check_parent(struct db_context *db,
+ const char *key)
+{
+ const char *sep = strrchr_m(key, '\\');
+ if (sep != NULL) {
+ char *pkey = talloc_strndup(talloc_tos(), key, sep-key);
+ if (!dbwrap_exists(db, string_term_tdb_data(pkey))) {
+ DEBUG(0, ("regdb_upgrade_v2_to_v3: missing subkey list "
+ "[%s]\nrun \"net registry check\"\n", pkey));
+ }
+ talloc_free(pkey);
+ }
+ return true;
+}
+
+
+#define IS_EQUAL(d,s) (((d).dsize == strlen(s)+1) && \
+ (strcmp((char*)(d).dptr, (s)) == 0))
+#define STARTS_WITH(d,s) (((d).dsize > strlen(s)) && \
+ (strncmp((char*)(d).dptr, (s), strlen(s)) == 0))
+#define SSTR(d) (int)(d).dsize , (char*)(d).dptr
+
+
static int regdb_upgrade_v2_to_v3_fn(struct db_record *rec, void *private_data)
{
- const char *keyname;
- fstring subkeyname;
- NTSTATUS status;
- WERROR werr;
- uint8_t *buf;
- uint32_t buflen, len;
- uint32_t num_items;
- uint32_t i;
- TDB_DATA key;
- TDB_DATA value;
struct db_context *db = (struct db_context *)private_data;
+ TDB_DATA key = dbwrap_record_get_key(rec);
+ TDB_DATA val = dbwrap_record_get_value(rec);
- key = dbwrap_record_get_key(rec);
- if (key.dptr == NULL || key.dsize == 0) {
+ if (tdb_data_is_empty(key)) {
return 0;
}
@@ -541,70 +624,73 @@ static int regdb_upgrade_v2_to_v3_fn(struct db_record *rec, void *private_data)
return 1;
}
- keyname = (const char *)key.dptr;
-
- if (strncmp(keyname, REGDB_VERSION_KEYNAME,
- strlen(REGDB_VERSION_KEYNAME)) == 0)
+ if (IS_EQUAL(key, REGDB_VERSION_KEYNAME) ||
+ STARTS_WITH(key, REG_VALUE_PREFIX) ||
+ STARTS_WITH(key, REG_SECDESC_PREFIX))
{
+ DEBUG(10, ("regdb_upgrade_v2_to_v3: skipping [%.*s]\n",
+ SSTR(key)));
return 0;
}
- if (strncmp(keyname, REG_SORTED_SUBKEYS_PREFIX,
- strlen(REG_SORTED_SUBKEYS_PREFIX)) == 0)
- {
+ if (STARTS_WITH(key, REG_SORTED_SUBKEYS_PREFIX)) {
+ NTSTATUS status;
/* Delete the deprecated sorted subkeys cache. */
- DEBUG(10, ("regdb_upgrade_v2_to_v3: deleting [%s]\n", keyname));
+ DEBUG(10, ("regdb_upgrade_v2_to_v3: deleting [%.*s]\n",
+ SSTR(key)));
status = dbwrap_record_delete(rec);
if (!NT_STATUS_IS_OK(status)) {
- DEBUG(0, ("regdb_upgrade_v2_to_v3: tdb_delete for [%s] "
- "failed!\n", keyname));
+ DEBUG(0, ("regdb_upgrade_v2_to_v3: deleting [%.*s] "
+ "failed!\n", SSTR(key)));
return 1;
}
return 0;
}
- if (strncmp(keyname, REG_VALUE_PREFIX, strlen(REG_VALUE_PREFIX)) == 0) {
- DEBUG(10, ("regdb_upgrade_v2_to_v3: skipping [%s]\n", keyname));
- return 0;
- }
-
- if (strncmp(keyname, REG_SECDESC_PREFIX,
- strlen(REG_SECDESC_PREFIX)) == 0)
+ if ( tdb_data_is_cstr(key) &&
+ hive_info((char*)key.dptr) != NULL )
{
- DEBUG(10, ("regdb_upgrade_v2_to_v3: skipping [%s]\n", keyname));
- return 0;
- }
+ /*
+ * Found a regular subkey list record.
+ * Walk the list and create the list record for those
+ * subkeys that don't already have one.
+ */
+ TDB_DATA pos = val;
+ char *subkey, *path = (char*)key.dptr;
+ uint32_t num_items, found_items = 0;
- /*
- * Found a regular subkey list record.
- * Walk the list and create the list record for those
- * subkeys that don't already have one.
- */
- DEBUG(10, ("regdb_upgrade_v2_to_v3: scanning subkey list of [%s]\n",
- keyname));
- value = dbwrap_record_get_value(rec);
- buf = value.dptr;
- buflen = value.dsize;
+ DEBUG(10, ("regdb_upgrade_v2_to_v3: scanning subkeylist of "
+ "[%s]\n", path));
- len = tdb_unpack(buf, buflen, "d", &num_items);
- if (len == (uint32_t)-1) {
- /* invalid or empty - skip */
- return 0;
- }
+ if (!tdb_data_read_uint32(&pos, &num_items)) {
+ /* invalid or empty - skip */
+ return 0;
+ }
- for (i=0; i<num_items; i++) {
- len += tdb_unpack(buf+len, buflen-len, "f", subkeyname);
- DEBUG(10, ("regdb_upgrade_v2_to_v3: "
- "writing subkey list for [%s\\%s]\n",
- keyname, subkeyname));
- werr = regdb_store_subkey_list(db, keyname, subkeyname);
- if (!W_ERROR_IS_OK(werr)) {
- return 1;
+ while (tdb_data_read_cstr(&pos, &subkey)) {
+ found_items++;
+
+ if (!upgrade_v2_to_v3_check_subkeylist(db, path, subkey))
+ {
+ return 1;
+ }
+
+ if (!upgrade_v2_to_v3_check_parent(db, path)) {
+ return 1;
+ }
}
+ if (found_items != num_items) {
+ DEBUG(0, ("regdb_upgrade_v2_to_v3: inconsistent subkey "
+ "list [%s]\nrun \"net registry check\"\n",
+ path));
+ }
+ } else {
+ DEBUG(10, ("regdb_upgrade_v2_to_v3: skipping invalid [%.*s]\n"
+ "run \"net registry check\"\n", SSTR(key)));
}
return 0;
generated by cgit (git 2.34.1) at 2024-11-22 23:44:52 +0000