diff options
Diffstat (limited to 'source3/rpc_server')
| -rw-r--r-- | source3/rpc_server/srv_eventlog_lib.c | 960 |
1 files changed, 0 insertions, 960 deletions
diff --git a/source3/rpc_server/srv_eventlog_lib.c b/source3/rpc_server/srv_eventlog_lib.c deleted file mode 100644 index f83c4fc3b8..0000000000 --- a/source3/rpc_server/srv_eventlog_lib.c +++ /dev/null @@ -1,960 +0,0 @@ -/* - * Unix SMB/CIFS implementation. - * Eventlog utility routines - * Copyright (C) Marcin Krzysztof Porwit 2005, - * Copyright (C) Brian Moran 2005. - * Copyright (C) Gerald (Jerry) Carter 2005. - * Copyright (C) Guenther Deschner 2009. - * - * 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 "includes.h" - -/* maintain a list of open eventlog tdbs with reference counts */ - -static ELOG_TDB *open_elog_list; - -/******************************************************************** - Init an Eventlog TDB, and return it. If null, something bad - happened. -********************************************************************/ - -TDB_CONTEXT *elog_init_tdb( char *tdbfilename ) -{ - TDB_CONTEXT *tdb; - - DEBUG(10,("elog_init_tdb: Initializing eventlog tdb (%s)\n", - tdbfilename)); - - tdb = tdb_open_log( tdbfilename, 0, TDB_DEFAULT, - O_RDWR|O_CREAT|O_TRUNC, 0660 ); - - if ( !tdb ) { - DEBUG( 0, ( "Can't open tdb for [%s]\n", tdbfilename ) ); - return NULL; - } - - /* initialize with defaults, copy real values in here from registry */ - - tdb_store_int32( tdb, EVT_OLDEST_ENTRY, 1 ); - tdb_store_int32( tdb, EVT_NEXT_RECORD, 1 ); - tdb_store_int32( tdb, EVT_MAXSIZE, 0x80000 ); - tdb_store_int32( tdb, EVT_RETENTION, 0x93A80 ); - - tdb_store_int32( tdb, EVT_VERSION, EVENTLOG_DATABASE_VERSION_V1 ); - - return tdb; -} - -/******************************************************************** - make the tdb file name for an event log, given destination buffer - and size. Caller must free memory. -********************************************************************/ - -char *elog_tdbname(TALLOC_CTX *ctx, const char *name ) -{ - char *path = talloc_asprintf(ctx, "%s/%s.tdb", - state_path("eventlog"), - name); - if (!path) { - return NULL; - } - strlower_m(path); - return path; -} - - -/******************************************************************** - this function is used to count up the number of bytes in a - particular TDB -********************************************************************/ - -struct trav_size_struct { - int size; - int rec_count; -}; - -static int eventlog_tdb_size_fn( TDB_CONTEXT * tdb, TDB_DATA key, TDB_DATA data, - void *state ) -{ - struct trav_size_struct *tsize = (struct trav_size_struct *)state; - - tsize->size += data.dsize; - tsize->rec_count++; - - return 0; -} - -/******************************************************************** - returns the size of the eventlog, and if MaxSize is a non-null - ptr, puts the MaxSize there. This is purely a way not to have yet - another function that solely reads the maxsize of the eventlog. - Yeah, that's it. -********************************************************************/ - -int elog_tdb_size( TDB_CONTEXT * tdb, int *MaxSize, int *Retention ) -{ - struct trav_size_struct tsize; - - if ( !tdb ) - return 0; - - ZERO_STRUCT( tsize ); - - tdb_traverse( tdb, eventlog_tdb_size_fn, &tsize ); - - if ( MaxSize != NULL ) { - *MaxSize = tdb_fetch_int32( tdb, EVT_MAXSIZE ); - } - - if ( Retention != NULL ) { - *Retention = tdb_fetch_int32( tdb, EVT_RETENTION ); - } - - DEBUG( 1, - ( "eventlog size: [%d] for [%d] records\n", tsize.size, - tsize.rec_count ) ); - return tsize.size; -} - -/******************************************************************** - Discard early event logs until we have enough for 'needed' bytes... - NO checking done beforehand to see that we actually need to do - this, and it's going to pluck records one-by-one. So, it's best - to determine that this needs to be done before doing it. - - Setting whack_by_date to True indicates that eventlogs falling - outside of the retention range need to go... - - return True if we made enough room to accommodate needed bytes -********************************************************************/ - -static bool make_way_for_eventlogs( TDB_CONTEXT * the_tdb, int32_t needed, - bool whack_by_date ) -{ - int32_t start_record, i, new_start; - int32_t end_record; - int32_t reclen, tresv1, trecnum, timegen, timewr; - int nbytes, len, Retention, MaxSize; - TDB_DATA key, ret; - time_t current_time, exp_time; - - /* discard some eventlogs */ - - /* read eventlogs from oldest_entry -- there can't be any discontinuity in recnos, - although records not necessarily guaranteed to have successive times */ - /* */ - - /* lock */ - tdb_lock_bystring_with_timeout( the_tdb, EVT_NEXT_RECORD, 1 ); - /* read */ - end_record = tdb_fetch_int32( the_tdb, EVT_NEXT_RECORD ); - start_record = tdb_fetch_int32( the_tdb, EVT_OLDEST_ENTRY ); - Retention = tdb_fetch_int32( the_tdb, EVT_RETENTION ); - MaxSize = tdb_fetch_int32( the_tdb, EVT_MAXSIZE ); - - time( ¤t_time ); - - /* calculate ... */ - exp_time = current_time - Retention; /* discard older than exp_time */ - - /* todo - check for sanity in next_record */ - nbytes = 0; - - DEBUG( 3, - ( "MaxSize [%d] Retention [%d] Current Time [%u] exp_time [%u]\n", - MaxSize, Retention, (unsigned int)current_time, (unsigned int)exp_time ) ); - DEBUG( 3, - ( "Start Record [%u] End Record [%u]\n", - (unsigned int)start_record, - (unsigned int)end_record )); - - for ( i = start_record; i < end_record; i++ ) { - /* read a record, add the amt to nbytes */ - key.dsize = sizeof(int32_t); - key.dptr = (unsigned char *)&i; - ret = tdb_fetch( the_tdb, key ); - if ( ret.dsize == 0 ) { - DEBUG( 8, - ( "Can't find a record for the key, record [%d]\n", - i ) ); - tdb_unlock_bystring( the_tdb, EVT_NEXT_RECORD ); - return False; - } - nbytes += ret.dsize; /* note this includes overhead */ - - len = tdb_unpack( ret.dptr, ret.dsize, "ddddd", &reclen, - &tresv1, &trecnum, &timegen, &timewr ); - if (len == -1) { - DEBUG( 10,("make_way_for_eventlogs: tdb_unpack failed.\n")); - tdb_unlock_bystring( the_tdb, EVT_NEXT_RECORD ); - SAFE_FREE( ret.dptr ); - return False; - } - - DEBUG( 8, - ( "read record %u, record size is [%d], total so far [%d]\n", - (unsigned int)i, reclen, nbytes ) ); - - SAFE_FREE( ret.dptr ); - - /* note that other servers may just stop writing records when the size limit - is reached, and there are no records older than 'retention'. This doesn't - like a very useful thing to do, so instead we whack (as in sleeps with the - fishes) just enough records to fit the what we need. This behavior could - be changed to 'match', if the need arises. */ - - if ( !whack_by_date && ( nbytes >= needed ) ) - break; /* done */ - if ( whack_by_date && ( timegen >= exp_time ) ) - break; /* done */ - } - - DEBUG( 3, - ( "nbytes [%d] needed [%d] start_record is [%u], should be set to [%u]\n", - nbytes, needed, (unsigned int)start_record, (unsigned int)i ) ); - /* todo - remove eventlog entries here and set starting record to start_record... */ - new_start = i; - if ( start_record != new_start ) { - for ( i = start_record; i < new_start; i++ ) { - key.dsize = sizeof(int32_t); - key.dptr = (unsigned char *)&i; - tdb_delete( the_tdb, key ); - } - - tdb_store_int32( the_tdb, EVT_OLDEST_ENTRY, new_start ); - } - tdb_unlock_bystring( the_tdb, EVT_NEXT_RECORD ); - return True; -} - -/******************************************************************** - some hygiene for an eventlog - see how big it is, and then - calculate how many bytes we need to remove -********************************************************************/ - -bool prune_eventlog( TDB_CONTEXT * tdb ) -{ - int MaxSize, Retention, CalcdSize; - - if ( !tdb ) { - DEBUG( 4, ( "No eventlog tdb handle\n" ) ); - return False; - } - - CalcdSize = elog_tdb_size( tdb, &MaxSize, &Retention ); - DEBUG( 3, - ( "Calculated size [%d] MaxSize [%d]\n", CalcdSize, - MaxSize ) ); - - if ( CalcdSize > MaxSize ) { - return make_way_for_eventlogs( tdb, CalcdSize - MaxSize, - False ); - } - - return make_way_for_eventlogs( tdb, 0, True ); -} - -/******************************************************************** -********************************************************************/ - -static bool can_write_to_eventlog( TDB_CONTEXT * tdb, int32_t needed ) -{ - int calcd_size; - int MaxSize, Retention; - - /* see if we can write to the eventlog -- do a policy enforcement */ - if ( !tdb ) - return False; /* tdb is null, so we can't write to it */ - - - if ( needed < 0 ) - return False; - MaxSize = 0; - Retention = 0; - - calcd_size = elog_tdb_size( tdb, &MaxSize, &Retention ); - - if ( calcd_size <= MaxSize ) - return True; /* you betcha */ - if ( calcd_size + needed < MaxSize ) - return True; - - if ( Retention == 0xffffffff ) { - return False; /* see msdn - we can't write no room, discard */ - } - /* - note don't have to test, but always good to show intent, in case changes needed - later - */ - - if ( Retention == 0x00000000 ) { - /* discard record(s) */ - /* todo - decide when to remove a bunch vs. just what we need... */ - return make_way_for_eventlogs( tdb, calcd_size - MaxSize, - True ); - } - - return make_way_for_eventlogs( tdb, calcd_size - MaxSize, False ); -} - -/******************************************************************* -*******************************************************************/ - -ELOG_TDB *elog_open_tdb( const char *logname, bool force_clear, bool read_only ) -{ - TDB_CONTEXT *tdb = NULL; - uint32_t vers_id; - ELOG_TDB *ptr; - char *tdbpath = NULL; - ELOG_TDB *tdb_node = NULL; - char *eventlogdir; - TALLOC_CTX *ctx = talloc_tos(); - - /* check for invalid options */ - - if (force_clear && read_only) { - DEBUG(1,("elog_open_tdb: Invalid flags\n")); - return NULL; - } - - /* first see if we have an open context */ - - for ( ptr=open_elog_list; ptr; ptr=ptr->next ) { - if ( strequal( ptr->name, logname ) ) { - ptr->ref_count++; - - /* trick to alow clearing of the eventlog tdb. - The force_clear flag should imply that someone - has done a force close. So make sure the tdb - is NULL. If this is a normal open, then just - return the existing reference */ - - if ( force_clear ) { - SMB_ASSERT( ptr->tdb == NULL ); - break; - } - else - return ptr; - } - } - - /* make sure that the eventlog dir exists */ - - eventlogdir = state_path( "eventlog" ); - if ( !directory_exist( eventlogdir ) ) - mkdir( eventlogdir, 0755 ); - - /* get the path on disk */ - - tdbpath = elog_tdbname(ctx, logname); - if (!tdbpath) { - return NULL; - } - - DEBUG(7,("elog_open_tdb: Opening %s...(force_clear == %s)\n", - tdbpath, force_clear?"True":"False" )); - - /* the tdb wasn't already open or this is a forced clear open */ - - if ( !force_clear ) { - - tdb = tdb_open_log( tdbpath, 0, TDB_DEFAULT, read_only ? O_RDONLY : O_RDWR , 0 ); - if ( tdb ) { - vers_id = tdb_fetch_int32( tdb, EVT_VERSION ); - - if ( vers_id != EVENTLOG_DATABASE_VERSION_V1 ) { - DEBUG(1,("elog_open_tdb: Invalid version [%d] on file [%s].\n", - vers_id, tdbpath)); - tdb_close( tdb ); - tdb = elog_init_tdb( tdbpath ); - } - } - } - - if ( !tdb ) - tdb = elog_init_tdb( tdbpath ); - - /* if we got a valid context, then add it to the list */ - - if ( tdb ) { - /* on a forced clear, just reset the tdb context if we already - have an open entry in the list */ - - if ( ptr ) { - ptr->tdb = tdb; - return ptr; - } - - if ( !(tdb_node = TALLOC_ZERO_P( NULL, ELOG_TDB)) ) { - DEBUG(0,("elog_open_tdb: talloc() failure!\n")); - tdb_close( tdb ); - return NULL; - } - - tdb_node->name = talloc_strdup( tdb_node, logname ); - tdb_node->tdb = tdb; - tdb_node->ref_count = 1; - - DLIST_ADD( open_elog_list, tdb_node ); - } - - return tdb_node; -} - -/******************************************************************* - Wrapper to handle reference counts to the tdb -*******************************************************************/ - -int elog_close_tdb( ELOG_TDB *etdb, bool force_close ) -{ - TDB_CONTEXT *tdb; - - if ( !etdb ) - return 0; - - etdb->ref_count--; - - SMB_ASSERT( etdb->ref_count >= 0 ); - - if ( etdb->ref_count == 0 ) { - tdb = etdb->tdb; - DLIST_REMOVE( open_elog_list, etdb ); - TALLOC_FREE( etdb ); - return tdb_close( tdb ); - } - - if ( force_close ) { - tdb = etdb->tdb; - etdb->tdb = NULL; - return tdb_close( tdb ); - } - - return 0; -} - -/******************************************************************** - Note that it's a pretty good idea to initialize the Eventlog_entry - structure to zero's before calling parse_logentry on an batch of - lines that may resolve to a record. ALSO, it's a good idea to - remove any linefeeds (that's EOL to you and me) on the lines - going in. -********************************************************************/ - -bool parse_logentry( TALLOC_CTX *mem_ctx, char *line, struct eventlog_Record_tdb *entry, bool * eor ) -{ - char *start = NULL, *stop = NULL; - - start = line; - - /* empty line signyfiying record delimeter, or we're at the end of the buffer */ - if ( start == NULL || strlen( start ) == 0 ) { - DEBUG( 6, - ( "parse_logentry: found end-of-record indicator.\n" ) ); - *eor = True; - return True; - } - if ( !( stop = strchr( line, ':' ) ) ) { - return False; - } - - DEBUG( 6, ( "parse_logentry: trying to parse [%s].\n", line ) ); - - if ( 0 == strncmp( start, "LEN", stop - start ) ) { - /* This will get recomputed later anyway -- probably not necessary */ - entry->size = atoi( stop + 1 ); - } else if ( 0 == strncmp( start, "RS1", stop - start ) ) { - /* For now all these reserved entries seem to have the same value, - which can be hardcoded to int(1699505740) for now */ - entry->reserved = talloc_strdup(mem_ctx, "eLfL"); - } else if ( 0 == strncmp( start, "RCN", stop - start ) ) { - entry->record_number = atoi( stop + 1 ); - } else if ( 0 == strncmp( start, "TMG", stop - start ) ) { - entry->time_generated = atoi( stop + 1 ); - } else if ( 0 == strncmp( start, "TMW", stop - start ) ) { - entry->time_written = atoi( stop + 1 ); - } else if ( 0 == strncmp( start, "EID", stop - start ) ) { - entry->event_id = atoi( stop + 1 ); - } else if ( 0 == strncmp( start, "ETP", stop - start ) ) { - if ( strstr( start, "ERROR" ) ) { - entry->event_type = EVENTLOG_ERROR_TYPE; - } else if ( strstr( start, "WARNING" ) ) { - entry->event_type = EVENTLOG_WARNING_TYPE; - } else if ( strstr( start, "INFO" ) ) { - entry->event_type = EVENTLOG_INFORMATION_TYPE; - } else if ( strstr( start, "AUDIT_SUCCESS" ) ) { - entry->event_type = EVENTLOG_AUDIT_SUCCESS; - } else if ( strstr( start, "AUDIT_FAILURE" ) ) { - entry->event_type = EVENTLOG_AUDIT_FAILURE; - } else if ( strstr( start, "SUCCESS" ) ) { - entry->event_type = EVENTLOG_SUCCESS; - } else { - /* some other eventlog type -- currently not defined in MSDN docs, so error out */ - return False; - } - } - -/* - else if(0 == strncmp(start, "NST", stop - start)) - { - entry->num_of_strings = atoi(stop + 1); - } -*/ - else if ( 0 == strncmp( start, "ECT", stop - start ) ) { - entry->event_category = atoi( stop + 1 ); - } else if ( 0 == strncmp( start, "RS2", stop - start ) ) { - entry->reserved_flags = atoi( stop + 1 ); - } else if ( 0 == strncmp( start, "CRN", stop - start ) ) { - entry->closing_record_number = atoi( stop + 1 ); - } else if ( 0 == strncmp( start, "USL", stop - start ) ) { - entry->sid_length = atoi( stop + 1 ); - } else if ( 0 == strncmp( start, "SRC", stop - start ) ) { - stop++; - while ( isspace( stop[0] ) ) { - stop++; - } - entry->source_name_len = strlen_m_term(stop); - entry->source_name = talloc_strdup(mem_ctx, stop); - if (entry->source_name_len == (uint32_t)-1 || - entry->source_name == NULL) { - return false; - } - } else if ( 0 == strncmp( start, "SRN", stop - start ) ) { - stop++; - while ( isspace( stop[0] ) ) { - stop++; - } - entry->computer_name_len = strlen_m_term(stop); - entry->computer_name = talloc_strdup(mem_ctx, stop); - if (entry->computer_name_len == (uint32_t)-1 || - entry->computer_name == NULL) { - return false; - } - } else if ( 0 == strncmp( start, "SID", stop - start ) ) { - smb_ucs2_t *dummy = NULL; - stop++; - while ( isspace( stop[0] ) ) { - stop++; - } - entry->sid_length = rpcstr_push_talloc(mem_ctx, - &dummy, - stop); - if (entry->sid_length == (uint32_t)-1) { - return false; - } - entry->sid = data_blob_talloc(mem_ctx, dummy, entry->sid_length); - if (entry->sid.data == NULL) { - return false; - } - } else if ( 0 == strncmp( start, "STR", stop - start ) ) { - size_t tmp_len; - int num_of_strings; - /* skip past initial ":" */ - stop++; - /* now skip any other leading whitespace */ - while ( isspace(stop[0])) { - stop++; - } - tmp_len = strlen_m_term(stop); - if (tmp_len == (size_t)-1) { - return false; - } - num_of_strings = entry->num_of_strings; - if (!add_string_to_array(mem_ctx, stop, &entry->strings, - &num_of_strings)) { - return false; - } - if (num_of_strings > 0xffff) { - return false; - } - entry->num_of_strings = num_of_strings; - entry->strings_len += tmp_len; - } else if ( 0 == strncmp( start, "DAT", stop - start ) ) { - /* skip past initial ":" */ - stop++; - /* now skip any other leading whitespace */ - while ( isspace( stop[0] ) ) { - stop++; - } - entry->data_length = strlen_m(stop); - entry->data = data_blob_talloc(mem_ctx, stop, entry->data_length); - if (!entry->data.data) { - return false; - } - } else { - /* some other eventlog entry -- not implemented, so dropping on the floor */ - DEBUG( 10, ( "Unknown entry [%s]. Ignoring.\n", line ) ); - /* For now return true so that we can keep on parsing this mess. Eventually - we will return False here. */ - return true; - } - return true; -} - -/******************************************************************* - calculate the correct fields etc for an eventlog entry -*******************************************************************/ - -size_t fixup_eventlog_record_tdb(struct eventlog_Record_tdb *r) -{ - size_t size = 56; /* static size of integers before buffers start */ - - r->source_name_len = strlen_m_term(r->source_name) * 2; - r->computer_name_len = strlen_m_term(r->computer_name) * 2; - r->strings_len = ndr_size_string_array(r->strings, - r->num_of_strings, LIBNDR_FLAG_STR_NULLTERM) * 2; - - /* fix up the eventlog entry structure as necessary */ - r->sid_padding = ( ( 4 - ( ( r->source_name_len + r->computer_name_len ) % 4 ) ) % 4 ); - r->padding = ( 4 - ( ( r->strings_len + r->data_length ) % 4 ) ) % 4; - - if (r->sid_length == 0) { - /* Should not pad to a DWORD boundary for writing out the sid if there is - no SID, so just propagate the padding to pad the data */ - r->padding += r->sid_padding; - r->sid_padding = 0; - } - - size += r->source_name_len; - size += r->computer_name_len; - size += r->sid_padding; - size += r->sid_length; - size += r->strings_len; - size += r->data_length; - size += r->padding; - /* need another copy of length at the end of the data */ - size += sizeof(r->size); - - r->size = size; - - return size; -} - - -/******************************************************************** - ********************************************************************/ - -struct eventlog_Record_tdb *evlog_pull_record_tdb(TALLOC_CTX *mem_ctx, - TDB_CONTEXT *tdb, - uint32_t record_number) -{ - struct eventlog_Record_tdb *r; - TDB_DATA data, key; - - int32_t srecno; - enum ndr_err_code ndr_err; - DATA_BLOB blob; - - srecno = record_number; - key.dptr = (unsigned char *)&srecno; - key.dsize = sizeof(int32_t); - - data = tdb_fetch(tdb, key); - if (data.dsize == 0) { - DEBUG(8,("evlog_pull_record_tdb: " - "Can't find a record for the key, record %d\n", - record_number)); - return NULL; - } - - r = talloc_zero(mem_ctx, struct eventlog_Record_tdb); - if (!r) { - goto done; - } - - blob = data_blob_const(data.dptr, data.dsize); - - ndr_err = ndr_pull_struct_blob(&blob, mem_ctx, NULL, r, - (ndr_pull_flags_fn_t)ndr_pull_eventlog_Record_tdb); - - if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) { - DEBUG(10,("evlog_pull_record_tdb: failed to decode record %d\n", - record_number)); - TALLOC_FREE(r); - goto done; - } - - if (DEBUGLEVEL >= 10) { - NDR_PRINT_DEBUG(eventlog_Record_tdb, r); - } - - DEBUG(10,("evlog_pull_record_tdb: retrieved entry for record %d\n", - record_number)); - done: - SAFE_FREE(data.dptr); - - return r; -} - -/******************************************************************** - ********************************************************************/ - -struct EVENTLOGRECORD *evlog_pull_record(TALLOC_CTX *mem_ctx, - TDB_CONTEXT *tdb, - uint32_t record_number) -{ - struct eventlog_Record_tdb *t; - struct EVENTLOGRECORD *r; - NTSTATUS status; - - r = talloc_zero(mem_ctx, struct EVENTLOGRECORD); - if (!r) { - return NULL; - } - - t = evlog_pull_record_tdb(r, tdb, record_number); - if (!t) { - talloc_free(r); - return NULL; - } - - status = evlog_tdb_entry_to_evt_entry(r, t, r); - if (!NT_STATUS_IS_OK(status)) { - talloc_free(r); - return NULL; - } - - r->Length = r->Length2 = ndr_size_EVENTLOGRECORD(r, NULL, 0); - - return r; -} - -/******************************************************************** - write an eventlog entry. Note that we have to lock, read next - eventlog, increment, write, write the record, unlock - - coming into this, ee has the eventlog record, and the auxilliary date - (computer name, etc.) filled into the other structure. Before packing - into a record, this routine will calc the appropriate padding, etc., - and then blast out the record in a form that can be read back in - ********************************************************************/ - -NTSTATUS evlog_push_record_tdb(TALLOC_CTX *mem_ctx, - TDB_CONTEXT *tdb, - struct eventlog_Record_tdb *r, - uint32_t *record_number) -{ - TDB_DATA kbuf, ebuf; - DATA_BLOB blob; - enum ndr_err_code ndr_err; - int ret; - - if (!r) { - return NT_STATUS_INVALID_PARAMETER; - } - - if (!can_write_to_eventlog(tdb, r->size)) { - return NT_STATUS_EVENTLOG_CANT_START; - } - - /* need to read the record number and insert it into the entry here */ - - /* lock */ - ret = tdb_lock_bystring_with_timeout(tdb, EVT_NEXT_RECORD, 1); - if (ret == -1) { - return NT_STATUS_LOCK_NOT_GRANTED; - } - - /* read */ - r->record_number = tdb_fetch_int32(tdb, EVT_NEXT_RECORD); - - ndr_err = ndr_push_struct_blob(&blob, mem_ctx, NULL, r, - (ndr_push_flags_fn_t)ndr_push_eventlog_Record_tdb); - if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) { - tdb_unlock_bystring(tdb, EVT_NEXT_RECORD); - return ndr_map_error2ntstatus(ndr_err); - } - - /* increment the record count */ - - kbuf.dsize = sizeof(int32_t); - kbuf.dptr = (uint8_t *)&r->record_number; - - ebuf.dsize = blob.length; - ebuf.dptr = blob.data; - - ret = tdb_store(tdb, kbuf, ebuf, 0); - if (ret == -1) { - tdb_unlock_bystring(tdb, EVT_NEXT_RECORD); - return NT_STATUS_EVENTLOG_FILE_CORRUPT; - } - - ret = tdb_store_int32(tdb, EVT_NEXT_RECORD, r->record_number + 1); - if (ret == -1) { - tdb_unlock_bystring(tdb, EVT_NEXT_RECORD); - return NT_STATUS_EVENTLOG_FILE_CORRUPT; - } - tdb_unlock_bystring(tdb, EVT_NEXT_RECORD); - - if (record_number) { - *record_number = r->record_number; - } - - return NT_STATUS_OK; -} - -/******************************************************************** - ********************************************************************/ - -NTSTATUS evlog_push_record(TALLOC_CTX *mem_ctx, - TDB_CONTEXT *tdb, - struct EVENTLOGRECORD *r, - uint32_t *record_number) -{ - struct eventlog_Record_tdb *t; - NTSTATUS status; - - t = talloc_zero(mem_ctx, struct eventlog_Record_tdb); - if (!t) { - return NT_STATUS_NO_MEMORY; - } - - status = evlog_evt_entry_to_tdb_entry(t, r, t); - if (!NT_STATUS_IS_OK(status)) { - talloc_free(t); - return status; - } - - status = evlog_push_record_tdb(mem_ctx, tdb, t, record_number); - talloc_free(t); - - return status; -} - -/******************************************************************** - ********************************************************************/ - -NTSTATUS evlog_evt_entry_to_tdb_entry(TALLOC_CTX *mem_ctx, - const struct EVENTLOGRECORD *e, - struct eventlog_Record_tdb *t) -{ - uint32_t i; - - ZERO_STRUCTP(t); - - t->size = e->Length; - t->reserved = e->Reserved; - t->record_number = e->RecordNumber; - t->time_generated = e->TimeGenerated; - t->time_written = e->TimeWritten; - t->event_id = e->EventID; - t->event_type = e->EventType; - t->num_of_strings = e->NumStrings; - t->event_category = e->EventCategory; - t->reserved_flags = e->ReservedFlags; - t->closing_record_number = e->ClosingRecordNumber; - - t->stringoffset = e->StringOffset; - t->sid_length = e->UserSidLength; - t->sid_offset = e->UserSidOffset; - t->data_length = e->DataLength; - t->data_offset = e->DataOffset; - - t->source_name_len = 2 * strlen_m_term(e->SourceName); - t->source_name = talloc_strdup(mem_ctx, e->SourceName); - NT_STATUS_HAVE_NO_MEMORY(t->source_name); - - t->computer_name_len = 2 * strlen_m_term(e->Computername); - t->computer_name = talloc_strdup(mem_ctx, e->Computername); - NT_STATUS_HAVE_NO_MEMORY(t->computer_name); - - /* t->sid_padding; */ - if (e->UserSidLength > 0) { - const char *sid_str = NULL; - smb_ucs2_t *dummy = NULL; - sid_str = sid_string_talloc(mem_ctx, &e->UserSid); - t->sid_length = rpcstr_push_talloc(mem_ctx, &dummy, sid_str); - if (t->sid_length == -1) { - return NT_STATUS_NO_MEMORY; - } - t->sid = data_blob_talloc(mem_ctx, (uint8_t *)dummy, t->sid_length); - NT_STATUS_HAVE_NO_MEMORY(t->sid.data); - } - - t->strings = talloc_array(mem_ctx, const char *, e->NumStrings); - for (i=0; i < e->NumStrings; i++) { - t->strings[i] = talloc_strdup(t->strings, e->Strings[i]); - NT_STATUS_HAVE_NO_MEMORY(t->strings[i]); - } - - t->strings_len = 2 * ndr_size_string_array(t->strings, t->num_of_strings, LIBNDR_FLAG_STR_NULLTERM); - t->data = data_blob_talloc(mem_ctx, e->Data, e->DataLength); - /* t->padding = r->Pad; */ - - return NT_STATUS_OK; -} - -/******************************************************************** - ********************************************************************/ - -NTSTATUS evlog_tdb_entry_to_evt_entry(TALLOC_CTX *mem_ctx, - const struct eventlog_Record_tdb *t, - struct EVENTLOGRECORD *e) -{ - uint32_t i; - - ZERO_STRUCTP(e); - - e->Length = t->size; - e->Reserved = t->reserved; - e->RecordNumber = t->record_number; - e->TimeGenerated = t->time_generated; - e->TimeWritten = t->time_written; - e->EventID = t->event_id; - e->EventType = t->event_type; - e->NumStrings = t->num_of_strings; - e->EventCategory = t->event_category; - e->ReservedFlags = t->reserved_flags; - e->ClosingRecordNumber = t->closing_record_number; - - e->StringOffset = t->stringoffset; - e->UserSidLength = t->sid_length; - e->UserSidOffset = t->sid_offset; - e->DataLength = t->data_length; - e->DataOffset = t->data_offset; - - e->SourceName = talloc_strdup(mem_ctx, t->source_name); - NT_STATUS_HAVE_NO_MEMORY(e->SourceName); - - e->Computername = talloc_strdup(mem_ctx, t->computer_name); - NT_STATUS_HAVE_NO_MEMORY(e->Computername); - - if (t->sid_length > 0) { - const char *sid_str = NULL; - size_t len; - if (!convert_string_talloc(mem_ctx, CH_UTF16, CH_UNIX, - t->sid.data, t->sid.length, - (void **)&sid_str, &len, false)) { - return NT_STATUS_INVALID_SID; - } - if (len > 0) { - e->UserSid = *string_sid_talloc(mem_ctx, sid_str); - } - } - - e->Strings = talloc_array(mem_ctx, const char *, t->num_of_strings); - for (i=0; i < t->num_of_strings; i++) { - e->Strings[i] = talloc_strdup(e->Strings, t->strings[i]); - NT_STATUS_HAVE_NO_MEMORY(e->Strings[i]); - } - - e->Data = (uint8_t *)talloc_memdup(mem_ctx, t->data.data, t->data_length); - e->Pad = talloc_strdup(mem_ctx, ""); - NT_STATUS_HAVE_NO_MEMORY(e->Pad); - - e->Length2 = t->size; - - return NT_STATUS_OK; -} |