diff options
Diffstat (limited to 'source3/smbd/notifyd/notifyd_db.c')
| -rw-r--r-- | source3/smbd/notifyd/notifyd_db.c | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/source3/smbd/notifyd/notifyd_db.c b/source3/smbd/notifyd/notifyd_db.c new file mode 100644 index 0000000..1822861 --- /dev/null +++ b/source3/smbd/notifyd/notifyd_db.c @@ -0,0 +1,165 @@ +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include "replace.h" +#include "lib/util/debug.h" +#include "lib/util/server_id_db.h" +#include "notifyd_private.h" +#include "notifyd_db.h" + +struct notifyd_parse_db_state { + bool (*fn)(const char *path, + struct server_id server, + const struct notify_instance *instance, + void *private_data); + void *private_data; +}; + +static bool notifyd_parse_db_parser(TDB_DATA key, TDB_DATA value, + void *private_data) +{ + struct notifyd_parse_db_state *state = private_data; + char path[key.dsize+1]; + struct notifyd_instance *instances = NULL; + size_t num_instances = 0; + size_t i; + bool ok; + + memcpy(path, key.dptr, key.dsize); + path[key.dsize] = 0; + + ok = notifyd_parse_entry(value.dptr, value.dsize, &instances, + &num_instances); + if (!ok) { + DBG_DEBUG("Could not parse entry for path %s\n", path); + return true; + } + + for (i=0; i<num_instances; i++) { + ok = state->fn(path, instances[i].client, + &instances[i].instance, + state->private_data); + if (!ok) { + return false; + } + } + + return true; +} + +static NTSTATUS notifyd_parse_db( + const uint8_t *buf, + size_t buflen, + uint64_t *log_index, + bool (*fn)(const char *path, + struct server_id server, + const struct notify_instance *instance, + void *private_data), + void *private_data) +{ + struct notifyd_parse_db_state state = { + .fn = fn, .private_data = private_data + }; + NTSTATUS status; + + if (buflen < 8) { + return NT_STATUS_INTERNAL_DB_CORRUPTION; + } + *log_index = BVAL(buf, 0); + + buf += 8; + buflen -= 8; + + status = dbwrap_parse_marshall_buf( + buf, buflen, notifyd_parse_db_parser, &state); + return status; +} + +NTSTATUS notify_walk(struct messaging_context *msg_ctx, + bool (*fn)(const char *path, struct server_id server, + const struct notify_instance *instance, + void *private_data), + void *private_data) +{ + struct server_id_db *names_db = NULL; + struct server_id notifyd = { .pid = 0, }; + struct tevent_context *ev = NULL; + struct tevent_req *req = NULL; + struct messaging_rec *rec = NULL; + uint64_t log_idx; + NTSTATUS status; + int ret; + bool ok; + + names_db = messaging_names_db(msg_ctx); + ok = server_id_db_lookup_one(names_db, "notify-daemon", ¬ifyd); + if (!ok) { + DBG_WARNING("No notify daemon around\n"); + return NT_STATUS_SERVER_UNAVAILABLE; + } + + ev = samba_tevent_context_init(msg_ctx); + if (ev == NULL) { + return NT_STATUS_NO_MEMORY; + } + + req = messaging_read_send(ev, ev, msg_ctx, MSG_SMB_NOTIFY_DB); + if (req == NULL) { + TALLOC_FREE(ev); + return NT_STATUS_NO_MEMORY; + } + + ok = tevent_req_set_endtime(req, ev, timeval_current_ofs(10, 0)); + if (!ok) { + TALLOC_FREE(ev); + return NT_STATUS_NO_MEMORY; + } + + status = messaging_send_buf( + msg_ctx, notifyd, MSG_SMB_NOTIFY_GET_DB, NULL, 0); + if (!NT_STATUS_IS_OK(status)) { + DBG_DEBUG("messaging_send_buf failed: %s\n", + nt_errstr(status)); + TALLOC_FREE(ev); + return status; + } + + ok = tevent_req_poll(req, ev); + if (!ok) { + DBG_DEBUG("tevent_req_poll failed\n"); + TALLOC_FREE(ev); + return NT_STATUS_INTERNAL_ERROR; + } + + ret = messaging_read_recv(req, ev, &rec); + if (ret != 0) { + DBG_DEBUG("messaging_read_recv failed: %s\n", + strerror(ret)); + TALLOC_FREE(ev); + return map_nt_error_from_unix(ret); + } + + status = notifyd_parse_db( + rec->buf.data, rec->buf.length, &log_idx, fn, private_data); + if (!NT_STATUS_IS_OK(status)) { + DBG_DEBUG("notifyd_parse_db failed: %s\n", + nt_errstr(status)); + TALLOC_FREE(ev); + return status; + } + + TALLOC_FREE(ev); + return NT_STATUS_OK; +} |