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DEFINITIONS
This source file includes following definitions.
- db_initialize
- db_open
- db_close
- db_next
- db_top
- db_get_rec
- db_get_rec_size
- db_get_field_size
- db_get_subfield_size
- db_get_subsubfield_size
- db_get_field
- db_get_subfield
- db_get_subsubfield
- db_goto
- db_count
- db_put_field
- db_put_subfield
- db_put_subsubfield
- db_write
- db_delete
- db_get_delete_flag
- db_set_delete_flag
- db_pack
- db_find
- db_find_field
- db_find_part
- db_find_field_part
- db_get_nfields
- db_get_nsubfields
- db_get_nsubsubfields
- db_get_rec_num
- db_get_pos
- db_set_pos
- db_sort
- db_get_sort_max_mem
- db_set_sort_max_mem
- db_get_sort_max_open_bin
- db_set_sort_max_open_bin
- db_get_change_rec_flag
- db_set_change_rec_flag
- db_get_enf_change_rec_flag
- db_set_enf_change_rec_flag
- db_get_autopack
- db_set_autopack
- db_get_rec_count
- db_new
- db_get_is_table_locked
- db_set_is_table_locked
- db_status
- db_new_table
- db_version
- db_get_open_table_list
- db_delete_table
- db_exist
- db_clear_table
- db_copy_table
- db_get_active
- db_replicate_update
- db_get_catalog_list
- db_delete_field
- db_delete_subfield
- db_delete_subsubfield
- db_trans_num
- db_connect_num
- db_end
- db_cs_int
- db_cs_long
- db_cs_code
- db_cs_char
- db_cs_client_connect
- db_failover
/* A high level api module for the client/server version of Bbuuzzb.
Rick Smereka, Copyright (C) 1997-2004.
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 2 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, get a copy via the Internet at
http://gnu.org/copyleft/gpl.html or write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston,
MA 02111-1307 USA
You can contact the author via email at rsmereka@future-lab.com
Original QNX version Feb/97, Rick Smereka
Complete re-write for the new client/server API. Dec/97, Rick Smereka
Added function 'db_set_pos'. Nov/98, Rick Smereka
Ported to 32bit Windows under CodeWarrior and TCP connection
oriented. Note that this interface does not use the IPC library
(with the exception of the 'IPCOMM.C' low level routines) since
the client of this API might be a TCP server whose executable
will be bound to the IPC routines in 'IPCSRV.C'.
Dec/98, Rick Smereka
Separated platform specific code using '#ifdef' statements. Ported
to HP-UX under GNU C V2.8.1. Jan/99, Rick Smereka
Modified 'db_cs_int' and 'db_cs_long' to load the reply
value even if the i/o code is not 'DBENG_OK'. Added
functions 'db_get_tmp_path' and 'db_get_error_log'.
Moved and renamed 'db_get_tmp_path' and
'db_get_error_log' to 'dbcscfg.c'. Feb/99, Rick Smereka
Ported to Red Hat Linux 5.2, Jul/99, Rick Smereka
Removed all references to 'WSA' functions (WinSock) and
the data structure since it now is the responsibility
of the application to call these functions. Renamed the
socket structures by adding the prefix 'db_'. Cleaned
up debug messages. Modified to use 'socloc' interface.
Added function 'db_version' to obtain server version.
Implemented failover detection. This API does not
provide complete automatic failover. A failover will
be detected and the return code will be 'DBENG_FAILOVER'
which means that the original server connected to has
failed and a connection to another Bbuuzzb server has
been successfully established. The tables open at the
time of the failover with the original server will
not be open with the new server. This is why the
command is not re-tried. It is up to the application
to decide what to do when a Bbuuzzb server failover
ocurrs. Added function 'db_get_active' to obtain the
host name and TCP/IP port number of the current
'Bbuuzzb' server. Apr/2000, Rick Smereka
Added function 'db_get_open_table_list', Added quotes
around the file name in functions 'db_open' and
'db_new_table' just in case the file name contains
spaces. Jun/2001, Rick Smereka
Modified for use with both sockets and QNX message passing.
Oct/2001, Rick Smereka
Added functions 'db_get_nsubfields', 'db_get_subfield_size',
'db_get_subfield', 'db_put_subfield', 'db_get_nsubsubfields',
'db_get_subsubfield_size', 'db_get_subsubfields' and
'db_put_subsubfield'. Jan/2002, Rick Smereka
Added function 'db_replicate_update' which is available
only using TCP IPC method. Mar/2002, Rick Smereka
Added support for automatic field, subfield and subsubfield
append using the value zero. Functions 'db_put_field',
'db_put_subfield' and 'db_put_subsubfield' now allow a zero
value (in the field, subfield and subsubfield number parameter)
to signify an append. Added function 'db_delete_table'. Added
function 'db_exist'. May/2002, Rick Smereka
Added functions 'db_clear_table' and 'db_copy_table'.
Jun/2002, Rick Smereka
Added function 'db_get_catalog_list'. Added parameter
to the function 'db_get_open_table_list'. Aug/2002,
Rick Smereka
Added functions 'db_sort', 'db_get_sort_max_mem',
'db_set_sort_max_mem', 'db_get_sort_max_open_bin'
and 'db_set_sort_max_open_bin'. Ported to Debian
Linux. Nov/2002, Rick Smereka
Added functions 'db_delete_field', 'db_delete_subfield'
and 'db_delete_subsubfield'. Mar/2003, Rick Smereka
Re-wrote to keep socket open until either a socket
communication error or until 'db_end' is called (TCP only).
Any application using this API must call 'db_initialize'
upon start and 'db_end' upon stop.
Added functions 'db_trans_num' and 'db_connect_num'.
Jun/2003, Rick Smereka
Added parameter to functions 'db_count' and 'db_get_rec_count'.
Feb/2004, Rick Smereka
Added functions 'db_get_autopack' and 'db_set_autopack'.
Changed all logging calls from 'sys_log' to 'logman'.
Mar/2004, Rick Smereka
Added a call to 'db_config_client_init' from 'db_initialize'.
Apr/2004, Rick Smereka */
#include "stdhead.h" /* standard include */
#include "flsocket.h" /* standard IPC defines */
#include "dbmess.h" /* send and reply message types and codes */
#include "dbcs.h" /* this module's header */
#ifdef IPC_TCP
#include "ipcomm.h" /* low level socket send/receive */
#include "socloc.h" /* socloc defines */
#include "sloc.h" /* socloc main API functions */
#include "sliocode.h" /* socloc error translation */
#endif
/* global (to module) data */
#ifdef IPC_TCP
#ifdef OS_WIN32
SOCKET db_clientSocket; /* client socket */
SOCKADDR_IN db_sockClientAddr; /* client address structure */
LPHOSTENT db_lpHostEnt; /* host info structure */
#endif
#ifdef OS_UNIX
int db_clientSocket;
struct sockaddr_in db_sockClientAddr;
struct hostent *db_lpHostEnt;
#endif
char dbeng_hostname[128]; /* host name of Bbuuzzb server */
int dbeng_port = 0; /* port Bbuuzzb is using */
int dbeng_is_connect; /* are we connected to a server? */
#else
pid_t dbeng_pid = -1;
#endif
/* private functions */
#ifdef IPC_TCP
static int db_cs_client_connect(void);
static int db_failover(void);
#endif
int db_initialize(void)
{
/* Initialize the client for communication with the
dbeng server. An attempt to get the dbeng server status
is made. Function returns 'DBENG_OK' if a successful
connection was made an engine i/o code otherwise. */
char mname[] = "db_initialize";
char mes[128];
int ret;
logman("%s:enter", mname);
db_config_client_init();
#ifdef IPC_TCP
dbeng_hostname[0] = EOS;
dbeng_port = 0;
dbeng_is_connect = FALSE;
/* make sure 'socloc' has already been initialized */
if ((ret = sloc_is_init()) != SL_OK)
{
sl_code_string(ret, mes);
logman("%s:bad rc[%d,%s][sloc_is_init]", mname,
ret, mes);
return(DBENG_SOCLOC_NO_INIT);
}
/* locate a 'Bbuuzzb' server */
if ((ret = sloc_find(DBENG_SERVICE_NAME, dbeng_hostname,
&dbeng_port, (char *)NULL)) != SL_OK)
{
/* it is assumed that the failure is 'not found' */
sl_code_string(ret, mes);
logman("%s:bad rc[%d,%s][sloc_find]", mname,
ret, mes);
return(DBENG_NO_SERVER);
}
/* connect to the server */
if (!db_cs_client_connect())
{
logman("%s:bad rc[FALSE] from db_cs_client_connect", mname);
return(DBENG_VC_ERROR);
}
#else
/* use QNX 'nameloc' to find the server */
if ((dbeng_pid = qnx_name_locate(0, DBENG_SERVICE_NAME, 0, NULL)) == -1)
{
logman("%s:bad rc[-1][qnx_name_locate]", mname);
return(DBENG_NO_SERVER);
}
#endif
return(DBENG_OK);
}
int db_open(char *filename, int *tid)
{
/* Open a table. The 'filename' is mandatory and consists of the
full path and filename. File name must be no larger than
1023 bytes each and must not contain spaces. Function returns
'DBENG_OK' upon success, a error code otherwise. The table
ID is returned in 'tid' upon success. */
struct dbeng_send_message *slm;
char mname[25];
int ret, size_s_mestruct;
strcpy(mname, "db_open");
logman("%s:enter", mname);
size_s_mestruct = sizeof(struct dbeng_send_message);
if (filename == NULL || !strlen(filename))
{
db_io_code_log(mname, "invalid[filename]", DBENG_INVALID_FILE_NAME);
return(DBENG_INVALID_FILE_NAME);
}
/* put a reasonable 1kb limit on the file name itself */
if (strlen(filename) > 1023)
{
db_io_code_log(mname, "too long[filename]", DBENG_FILENAME_TOO_LONG);
return(DBENG_FILENAME_TOO_LONG);
}
*tid = 0;
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
slm->type = DBENG_SEND_OPEN;
/* put quotes around filename in case it contains spaces */
sprintf(slm->dbc, "'%s'", filename);
ret = db_cs_int(slm, tid);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_close(int tid)
{
/* Close a table. Table ID is expected in 'tid'.
Function returns 'DBENG_OK' upon success, an error code
otherwise. */
struct dbeng_send_message *slm;
char mname[25];
int size_s_mestruct;
int ret;
strcpy(mname, "db_close");
logman("%s:enter", mname);
if (tid <= 0)
{
db_io_code_log(mname, "invalid tid", DBENG_NO_SUCH_TID);
return(DBENG_NO_SUCH_TID);
}
size_s_mestruct = sizeof(struct dbeng_send_message);
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
slm->type = DBENG_SEND_CLOSE;
sprintf(slm->dbc, "%d", tid);
ret = db_cs_code(slm);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_next(int tid)
{
/* Perform next record command. Function returns 'DBENG_OK' upon
success, an error code otherwise. */
struct dbeng_send_message *slm;
char mname[25];
int size_s_mestruct;
int ret;
strcpy(mname, "db_next");
logman("%s:enter", mname);
if (tid <= 0)
{
db_io_code_log(mname, "invalid tid", DBENG_NO_SUCH_TID);
return(DBENG_NO_SUCH_TID);
}
size_s_mestruct = sizeof(struct dbeng_send_message);
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
slm->type = DBENG_SEND_NEXT;
sprintf(slm->dbc, "%d", tid);
ret = db_cs_code(slm);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_top(int tid)
{
/* Goto the top of a table. Function returns 'DBENG_OK' upon
success, an error code otherwise. */
struct dbeng_send_message *slm;
char mname[25];
int size_s_mestruct;
int ret;
strcpy(mname, "db_top");
logman("%s:enter", mname);
if (tid <= 0)
{
db_io_code_log(mname, "invalid tid", DBENG_NO_SUCH_TID);
return(DBENG_NO_SUCH_TID);
}
size_s_mestruct = sizeof(struct dbeng_send_message);
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
slm->type = DBENG_SEND_TOP;
sprintf(slm->dbc, "%d", tid);
ret = db_cs_code(slm);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_get_rec(int tid, char *rec_out)
{
/* Get complete table record. The file pointer is not advanced to
the next record. The current record contents are returned.
Record data is returned in 'rec_out' upon success.
'rec_out' must be large enough to hold the record.
Function returns 'DBENG_OK' upon success, an error code
otherwise. */
struct dbeng_send_message *slm;
char mname[25];
int size_s_mestruct;
int ret;
strcpy(mname, "db_get_rec");
logman("%s:enter", mname);
if (tid <= 0)
{
db_io_code_log(mname, "invalid tid", DBENG_NO_SUCH_TID);
return(DBENG_NO_SUCH_TID);
}
if (rec_out == (char *)NULL)
{
db_io_code_log(mname, "null[rec_out]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
rec_out[0] = EOS;
size_s_mestruct = sizeof(struct dbeng_send_message);
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
slm->type = DBENG_SEND_GET_REC;
sprintf(slm->dbc, "%d", tid);
ret = db_cs_char(slm, rec_out);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_get_rec_size(int tid, int *rec_size)
{
/* Get table record size or length. Record size is returned in
'rec_size' upon success. Function returns 'DBENG_OK' upon
success, an error code otherwise. */
struct dbeng_send_message *slm;
char mname[25];
int size_s_mestruct;
int ret;
strcpy(mname, "db_get_rec_size");
logman("%s:enter", mname);
if (tid <= 0)
{
db_io_code_log(mname, "invalid tid", DBENG_NO_SUCH_TID);
return(DBENG_NO_SUCH_TID);
}
if (rec_size == NULL)
{
db_io_code_log(mname, "null[rec_size]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
size_s_mestruct = sizeof(struct dbeng_send_message);
*rec_size = 0;
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
slm->type = DBENG_SEND_GET_REC_SIZE;
sprintf(slm->dbc, "%d", tid);
ret = db_cs_int(slm, rec_size);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_get_field_size(int tid, int fnum, int *field_size)
{
/* Get size of a field in the current record. Variable 'field_size'
will be loaded with the field size upon success.
Function returns 'DBENG_OK' upon success, an error code
otherwise. */
struct dbeng_send_message *slm;
char mname[25];
int size_s_mestruct;
int ret;
strcpy(mname, "db_get_field_size");
if (tid <= 0)
{
db_io_code_log(mname, "invalid tid", DBENG_NO_SUCH_TID);
return(DBENG_NO_SUCH_TID);
}
if (fnum <= 0)
{
db_io_code_log(mname, "out of range[fnum]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
if (field_size == (int *)NULL)
{
db_io_code_log(mname, "null[field_size]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
*field_size = 0;
logman("%s:enter,t=%d,f=%d", mname, tid, fnum);
size_s_mestruct = sizeof(struct dbeng_send_message);
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
slm->type = DBENG_SEND_GET_FIELD_SIZE;
sprintf(slm->dbc, "%d %d", tid, fnum);
ret = db_cs_int(slm, field_size);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_get_subfield_size(int tid, int fnum, int sfnum, int *subfield_size)
{
/* Get size of a sub-field in a field. Variable 'subfield_size'
will be loaded with the sub-field size upon success.
Function returns 'DBENG_OK' upon success, an error code
otherwise. */
struct dbeng_send_message *slm;
char mname[] = "db_get_subfield_size";
int size_s_mestruct;
int ret;
if (tid <= 0)
{
db_io_code_log(mname, "invalid tid", DBENG_NO_SUCH_TID);
return(DBENG_NO_SUCH_TID);
}
if (fnum <= 0)
{
db_io_code_log(mname, "out of range[fnum]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
if (sfnum <= 0)
{
db_io_code_log(mname, "out of range[sfnum]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
if (subfield_size == (int *)NULL)
{
db_io_code_log(mname, "null[subfield_size]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
*subfield_size = 0;
logman("%s:enter,t=%d,f=%d,sf=%d", mname, tid, fnum, sfnum);
size_s_mestruct = sizeof(struct dbeng_send_message);
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
slm->type = DBENG_SEND_GET_SUBFIELD_SIZE;
sprintf(slm->dbc, "%d %d %d", tid, fnum, sfnum);
ret = db_cs_int(slm, subfield_size);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_get_subsubfield_size(int tid, int fnum, int sfnum, int ssfnum,
int *subsubfield_size)
{
/* Get size of a sub-sub-field in a sub-field. Variable 'subsubfield_size'
will be loaded with the sub-sub-field size upon success.
Function returns 'DBENG_OK' upon success, an error code
otherwise. */
struct dbeng_send_message *slm;
char mname[] = "db_get_subsubfield_size";
int size_s_mestruct;
int ret;
if (tid <= 0)
{
db_io_code_log(mname, "invalid tid", DBENG_NO_SUCH_TID);
return(DBENG_NO_SUCH_TID);
}
if (fnum <= 0)
{
db_io_code_log(mname, "out of range[fnum]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
if (sfnum <= 0)
{
db_io_code_log(mname, "out of range[sfnum]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
if (ssfnum <= 0)
{
db_io_code_log(mname, "out of range[ssfnum]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
if (subsubfield_size == (int *)NULL)
{
db_io_code_log(mname, "null[subsubfield_size]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
*subsubfield_size = 0;
logman("%s:enter,t=%d,f=%d,sf=%d,ssf=%d", mname, tid, fnum,
sfnum, ssfnum);
size_s_mestruct = sizeof(struct dbeng_send_message);
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
slm->type = DBENG_SEND_GET_SUBSUBFIELD_SIZE;
sprintf(slm->dbc, "%d %d %d %d", tid, fnum, sfnum, ssfnum);
ret = db_cs_int(slm, subsubfield_size);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_get_field(int tid, int field_num, char *field_out)
{
/* Get field data. Field contents are returned in 'field_out'
upon success. Function returns 'DBENG_OK' upon success, an error code
otherwise. */
struct dbeng_send_message *slm;
char mname[25];
int size_s_mestruct;
int ret;
strcpy(mname, "db_get_field");
if (tid <= 0)
{
db_io_code_log(mname, "invalid tid", DBENG_NO_SUCH_TID);
return(DBENG_NO_SUCH_TID);
}
if (field_num <= 0)
{
db_io_code_log(mname, "illegal field number", DBENG_NO_SUCH_FIELD);
return(DBENG_NO_SUCH_FIELD);
}
if (field_out == (char *)NULL)
{
db_io_code_log(mname, "null[field_out]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
field_out[0] = EOS;
logman("%s:enter,t=%d,f=%d", mname, tid, field_num);
size_s_mestruct = sizeof(struct dbeng_send_message);
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
slm->type = DBENG_SEND_GET_FIELD;
sprintf(slm->dbc, "%d %d", tid, field_num);
ret = db_cs_char(slm, field_out);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_get_subfield(int tid, int field_num, int subfield_num,
char *subfield_out)
{
/* Get sub-field data. Sub-field contents are returned in 'subfield_out'
upon success. Function returns 'DBENG_OK' upon success, an error code
otherwise. */
struct dbeng_send_message *slm;
char mname[] = "db_get_subfield";
int size_s_mestruct;
int ret;
if (tid <= 0)
{
db_io_code_log(mname, "invalid tid", DBENG_NO_SUCH_TID);
return(DBENG_NO_SUCH_TID);
}
if (field_num <= 0)
{
db_io_code_log(mname, "out of range[field_num]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
if (subfield_num <= 0)
{
db_io_code_log(mname, "out of range[subfield_num]",
DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
if (subfield_out == (char *)NULL)
{
db_io_code_log(mname, "null[subfield_out]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
subfield_out[0] = EOS;
logman("%s:enter,t=%d,f=%d,sf=%d", mname, tid, field_num,
subfield_num);
size_s_mestruct = sizeof(struct dbeng_send_message);
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
slm->type = DBENG_SEND_GET_SUBFIELD;
sprintf(slm->dbc, "%d %d %d", tid, field_num, subfield_num);
ret = db_cs_char(slm, subfield_out);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_get_subsubfield(int tid, int field_num, int subfield_num,
int subsubfield_num, char *subsubfield_out)
{
/* Get sub-sub-field data. Sub-sub-field contents are returned in
'subsubfield_out' upon success. Function returns 'DBENG_OK'
upon success, an error code otherwise. */
struct dbeng_send_message *slm;
char mname[] = "db_get_subsubfield";
int size_s_mestruct;
int ret;
if (tid <= 0)
{
db_io_code_log(mname, "invalid tid", DBENG_NO_SUCH_TID);
return(DBENG_NO_SUCH_TID);
}
if (field_num <= 0)
{
db_io_code_log(mname, "out of range[field_num]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
if (subfield_num <= 0)
{
db_io_code_log(mname, "out of range[subfield_num]",
DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
if (subsubfield_num <= 0)
{
db_io_code_log(mname, "out of range[subsubfield_num]",
DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
if (subsubfield_out == (char *)NULL)
{
db_io_code_log(mname, "null[subsubfield_out]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
subsubfield_out[0] = EOS;
logman("%s:enter,t=%d,f=%d,sf=%d,ssf=%d", mname, tid, field_num,
subfield_num, subsubfield_num);
size_s_mestruct = sizeof(struct dbeng_send_message);
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
slm->type = DBENG_SEND_GET_SUBSUBFIELD;
sprintf(slm->dbc, "%d %d %d %d", tid, field_num, subfield_num,
subsubfield_num);
ret = db_cs_char(slm, subsubfield_out);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_goto(int tid, long rec_num)
{
/* Goto a specific record number. Function returns 'DBENG_OK'
upon success, an error code otherwise. */
struct dbeng_send_message *slm;
char mname[25];
int size_s_mestruct;
int ret;
strcpy(mname, "db_goto");
logman("%s:enter", mname);
if (tid <= 0)
{
db_io_code_log(mname, "invalid tid", DBENG_NO_SUCH_TID);
return(DBENG_NO_SUCH_TID);
}
if (rec_num <= 0L)
{
db_io_code_log(mname, "illegal record number", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
size_s_mestruct = sizeof(struct dbeng_send_message);
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
slm->type = DBENG_SEND_GOTO;
sprintf(slm->dbc, "%d %ld", tid, rec_num);
ret = db_cs_code(slm);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_count(int tid, long *active_num, long *deleted_num)
{
/* Count the number of records in a table.
Function returns 'DBENG_OK' with the record count loaded upon success,
an error code otherwise. */
struct dbeng_send_message *slm;
char mname[] = "db_count", buf[128], wrd[128];
long tmp;
int size_s_mestruct;
int ret;
logman("%s:enter", mname);
if (tid <= 0)
{
db_io_code_log(mname, "invalid tid", DBENG_NO_SUCH_TID);
return(DBENG_NO_SUCH_TID);
}
if (active_num == (long *)NULL)
{
db_io_code_log(mname, "null[active_num]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
if (deleted_num == (long *)NULL)
{
db_io_code_log(mname, "null[deleted_num]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
*active_num = *deleted_num = 0L;
size_s_mestruct = sizeof(struct dbeng_send_message);
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
slm->type = DBENG_SEND_COUNT;
sprintf(slm->dbc, "%d", tid);
// server sends back two long int's
ret = db_cs_char(slm, buf);
free(slm);
if (ret == DBENG_OK)
{
if (words(buf) < 2)
{
db_io_code_log(mname, "expected two counts", DBENG_INTERNAL_ERROR);
return(DBENG_INTERNAL_ERROR);
}
if (!word(buf, wrd, 1))
{
db_io_code_log(mname, "error extracting active count",
DBENG_INTERNAL_ERROR);
return(DBENG_INTERNAL_ERROR);
}
if (!qatol(wrd, active_num))
{
db_io_code_log(mname, "active count not numeric",
DBENG_INTERNAL_ERROR);
return(DBENG_INTERNAL_ERROR);
}
if (!word(buf, wrd, 2))
{
db_io_code_log(mname, "error extracting deleted count",
DBENG_INTERNAL_ERROR);
return(DBENG_INTERNAL_ERROR);
}
if (!qatol(wrd, deleted_num))
{
db_io_code_log(mname, "deleted count not numeric",
DBENG_INTERNAL_ERROR);
return(DBENG_INTERNAL_ERROR);
}
}
logman("%s:exit[%d]active=%ld,deleted=%ld", mname, ret, *active_num,
*deleted_num);
return(ret);
}
int db_put_field(int tid, int field_num, char *field_data)
{
/* Place a string into a field in the current record. Function returns
'DBENG_OK' upon success, an error code otherwise. */
struct dbeng_send_message *slm;
char mname[25];
int size_s_mestruct;
int ret;
strcpy(mname, "db_put_field");
if (tid <= 0)
{
db_io_code_log(mname, "invalid tid", DBENG_NO_SUCH_TID);
return(DBENG_NO_SUCH_TID);
}
if (field_num < 0)
{
db_io_code_log(mname, "illegal field number",DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
if (field_data == NULL)
{
db_io_code_log(mname, "null[field_data]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
logman("%s:enter,t=%d,f=%d,d=%s,l=%d", mname, tid, field_num,
field_data, strlen(field_data));
size_s_mestruct = sizeof(struct dbeng_send_message);
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
/* surround data with single quotes just in case data
contains one or more spaces */
sprintf(slm->dbc, "%d %d '%s'", tid, field_num, field_data);
slm->type = DBENG_SEND_PUT_FIELD;
ret = db_cs_code(slm);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_put_subfield(int tid, int field_num, int subfield_num, char *sf_data)
{
/* Place a string into a sub-field into a field. Function returns
'DBENG_OK' upon success, an error code otherwise. */
struct dbeng_send_message *slm;
char mname[] = "db_put_subfield";
int size_s_mestruct;
int ret;
if (tid <= 0)
{
db_io_code_log(mname, "invalid tid", DBENG_NO_SUCH_TID);
return(DBENG_NO_SUCH_TID);
}
if (field_num < 0)
{
db_io_code_log(mname, "out of range[field_num]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
if (subfield_num < 0)
{
db_io_code_log(mname, "out of range[subfield_num]",
DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
if (sf_data == (char *)NULL)
{
db_io_code_log(mname, "null[sf_data]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
logman("%s:enter,t=%d,f=%d,sf=%d,d=%s,l=%d", mname, tid, field_num,
subfield_num, sf_data, strlen(sf_data));
size_s_mestruct = sizeof(struct dbeng_send_message);
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
/* surround data with single quotes just in case data
contains one or more spaces */
sprintf(slm->dbc, "%d %d %d '%s'", tid, field_num, subfield_num, sf_data);
slm->type = DBENG_SEND_PUT_SUBFIELD;
ret = db_cs_code(slm);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_put_subsubfield(int tid, int field_num, int subfield_num,
int subsubfield_num, char *ssf_data)
{
/* Place a string into a sub-sub-field into a sub-field. Function returns
'DBENG_OK' upon success, an error code otherwise. */
struct dbeng_send_message *slm;
char mname[] = "db_put_subsubfield";
int size_s_mestruct;
int ret;
if (tid <= 0)
{
db_io_code_log(mname, "invalid tid", DBENG_NO_SUCH_TID);
return(DBENG_NO_SUCH_TID);
}
if (field_num < 0)
{
db_io_code_log(mname, "out of range[field_num]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
if (subfield_num < 0)
{
db_io_code_log(mname, "out of range[subfield_num]",
DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
if (subsubfield_num < 0)
{
db_io_code_log(mname, "out of range[subsubfield_num]",
DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
if (ssf_data == (char *)NULL)
{
db_io_code_log(mname, "null[ssf_data]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
logman("%s:enter,t=%d,f=%d,sf=%d,ssf=%d,d=%s,l=%d", mname, tid,
field_num, subfield_num, subsubfield_num, ssf_data,
strlen(ssf_data));
size_s_mestruct = sizeof(struct dbeng_send_message);
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
/* surround data with single quotes just in case data
contains one or more spaces */
sprintf(slm->dbc, "%d %d %d %d '%s'", tid, field_num, subfield_num,
subsubfield_num, ssf_data);
slm->type = DBENG_SEND_PUT_SUBSUBFIELD;
ret = db_cs_code(slm);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_write(int tid)
{
/* Write a record to the table. If the record already exists, it
will be re-written, otherwise a new record will be written.
Field data must have already been placed into the record.
Function returns 'DBENG_OK' upon success, an error code otherwise. */
struct dbeng_send_message *slm;
char mname[25];
int size_s_mestruct;
int ret;
strcpy(mname, "db_write");
logman("%s:enter", mname);
if (tid <= 0)
{
db_io_code_log(mname, "invalid tid", DBENG_NO_SUCH_TID);
return(DBENG_NO_SUCH_TID);
}
size_s_mestruct = sizeof(struct dbeng_send_message);
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
slm->type = DBENG_SEND_WRITE;
sprintf(slm->dbc, "%d", tid);
ret = db_cs_code(slm);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_delete(int tid)
{
/* Delete the current record from a table. Only the current record
will be deleted. Function returns 'DBENG_OK' upon success, an
error code otherwise. */
struct dbeng_send_message *slm;
char mname[25];
int size_s_mestruct;
int ret;
strcpy(mname, "db_delete");
logman("%s:enter", mname);
if (tid <= 0)
{
db_io_code_log(mname, "invalid tid", DBENG_NO_SUCH_TID);
return(DBENG_NO_SUCH_TID);
}
size_s_mestruct = sizeof(struct dbeng_send_message);
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
slm->type = DBENG_SEND_DELETE;
sprintf(slm->dbc, "%d", tid);
ret = db_cs_code(slm);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_get_delete_flag(int tid, int *value)
{
/* Get the 'process_deleted' flag for a table. Function returns 'DBENG_OK'
upon success, an error code otherwise. */
struct dbeng_send_message *slm;
char mname[25];
int size_s_mestruct;
int ret;
strcpy(mname, "db_get_delete_flag");
logman("%s:enter", mname);
if (tid <= 0)
{
db_io_code_log(mname, "invalid tid", DBENG_NO_SUCH_TID);
return(DBENG_NO_SUCH_TID);
}
if (value == (int *)NULL)
{
db_io_code_log(mname, "null[value]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
*value = FALSE;
size_s_mestruct = sizeof(struct dbeng_send_message);
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
slm->type = DBENG_SEND_GET_DELETE_FLAG;
sprintf(slm->dbc, "%d", tid);
ret = db_cs_int(slm, value);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_set_delete_flag(int tid, int value)
{
/* Set the 'process_deleted' flag for a table. 'value' must be one of 'TRUE'
or 'FALSE'. Function returns 'DBENG_OK' upon success, an error
code otherwise. */
struct dbeng_send_message *slm;
char mname[25];
int size_s_mestruct;
int ret;
strcpy(mname, "db_set_delete_flag");
logman("%s:enter", mname);
if (tid <= 0)
{
db_io_code_log(mname, "invalid tid", DBENG_NO_SUCH_TID);
return(DBENG_NO_SUCH_TID);
}
if (value != TRUE && value != FALSE)
{
db_io_code_log(mname, "not 0|1[value]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
size_s_mestruct = sizeof(struct dbeng_send_message);
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
slm->type = DBENG_SEND_SET_DELETE_FLAG;
sprintf(slm->dbc, "%d %d", tid, value);
ret = db_cs_code(slm);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_pack(int tid)
{
/* Pack a table to remove deleted records. Function returns
'DBENG_OK' upon success, an error code otherwise. */
struct dbeng_send_message *slm;
char mname[25];
int size_s_mestruct;
int ret;
strcpy(mname, "db_pack");
logman("%s:enter", mname);
if (tid <= 0)
{
db_io_code_log(mname, "invalid tid", DBENG_NO_SUCH_TID);
return(DBENG_NO_SUCH_TID);
}
size_s_mestruct = sizeof(struct dbeng_send_message);
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
slm->type = DBENG_SEND_PACK;
sprintf(slm->dbc, "%d", tid);
ret = db_cs_code(slm);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_find(int tid, int cs_flag, char *fdata, int *field_num)
{
/* Find data in a table field. Only whole fields will match.
All fields in each record will be searched. Comparison
is based on 'cs_flag' for case sensitivity ('1' is case
insensitivity, '0' is case sensitivity). Field number that
matched will be loaded into 'field_num' upon a successful find.
Function will return 'DBENG_OK' if a record was found, an error
code otherwise. */
struct dbeng_send_message *slm;
char mname[25];
int size_s_mestruct;
int ret;
strcpy(mname, "db_find");
logman("%s:enter", mname);
if (tid <= 0)
{
db_io_code_log(mname, "invalid tid", DBENG_NO_SUCH_TID);
return(DBENG_NO_SUCH_TID);
}
if (cs_flag != TRUE && cs_flag != FALSE)
{
db_io_code_log(mname, "not 0|1[cs_flag]",
DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
if (fdata == NULL)
{
db_io_code_log(mname, "null[fdata]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
if (field_num == NULL)
{
db_io_code_log(mname, "null[field_num]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
*field_num = 0;
size_s_mestruct = sizeof(struct dbeng_send_message);
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
slm->type = DBENG_SEND_FIND;
sprintf(slm->dbc, "%d '%s' %d", tid, fdata, cs_flag);
ret = db_cs_int(slm, field_num);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_find_field(int tid, int cs_flag, char *fdata, int field_num)
{
/* Find data in a table field. Only whole field will match.
Only field 'field_num' will be searched in each record. String
comparison is based on 'cs_flag' for case sensitivity.('1' is case
insensitivity, '0' is case sensitivity). Function will return
'DBENG_OK' if a match was found, an error code otherwise. */
struct dbeng_send_message *slm;
char mname[25];
int size_s_mestruct;
int ret;
strcpy(mname, "db_find_field");
logman("%s:enter", mname);
if (tid <= 0)
{
db_io_code_log(mname, "invalid tid", DBENG_NO_SUCH_TID);
return(DBENG_NO_SUCH_TID);
}
if (cs_flag != TRUE && cs_flag != FALSE)
{
db_io_code_log(mname, "not 0|1[cs_flag]",DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
if (fdata == NULL)
{
db_io_code_log(mname, "null[fdata]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
if (field_num <= 0)
{
db_io_code_log(mname, "illegal[field_num]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
size_s_mestruct = sizeof(struct dbeng_send_message);
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
slm->type = DBENG_SEND_FIND_FIELD;
sprintf(slm->dbc, "%d %d '%s' %d", tid, field_num, fdata, cs_flag);
ret = db_cs_code(slm);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_find_part(int tid, int cs_flag, char *fdata, int *field_num)
{
/* Find data in a table field. Any part of a field will match.
All fields in each record will be searched. Comparison
is based on 'cs_flag' for case sensitivity ('1' is case
insensitivity, '0' is case sensitivity). Field number that
matched will be loaded into 'field_num' upon a successful find.
Function will return 'DBENG_OK' if a record was found, an error
code otherwise. */
struct dbeng_send_message *slm;
char mname[25];
int size_s_mestruct;
int ret;
strcpy(mname, "db_find_part");
logman("%s:enter", mname);
if (tid <= 0)
{
db_io_code_log(mname, "invalid tid", DBENG_NO_SUCH_TID);
return(DBENG_NO_SUCH_TID);
}
if (cs_flag != TRUE && cs_flag != FALSE)
{
db_io_code_log(mname, "not 0|1[cs_flag]",
DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
if (fdata == NULL)
{
db_io_code_log(mname, "null[fdata]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
if (field_num == NULL)
{
db_io_code_log(mname, "null[field_num]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
*field_num = 0;
size_s_mestruct = sizeof(struct dbeng_send_message);
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
slm->type = DBENG_SEND_FIND_PART;
sprintf(slm->dbc, "%d '%s' %d", tid, fdata, cs_flag);
ret = db_cs_int(slm, field_num);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_find_field_part(int tid, int cs_flag, char *fdata, int field_num)
{
/* Find data in a table field. Any part of the field will match.
Only field 'field_num' will be searched in each record. String
comparison is based on 'cs_flag' for case sensitivity.('1' is case
insensitivity, '0' is case sensitivity). Function will return
'DBENG_OK' if a match was found, an error code otherwise. */
struct dbeng_send_message *slm;
char mname[25];
int size_s_mestruct;
int ret;
strcpy(mname, "db_find_field_part");
logman("%s:enter", mname);
if (tid <= 0)
{
db_io_code_log(mname, "invalid tid", DBENG_NO_SUCH_TID);
return(DBENG_NO_SUCH_TID);
}
if (cs_flag != TRUE && cs_flag != FALSE)
{
db_io_code_log(mname, "not 0|1[cs_flag]",DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
if (fdata == NULL)
{
db_io_code_log(mname, "null[fdata]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
if (field_num <= 0)
{
db_io_code_log(mname, "illegal[field_num]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
size_s_mestruct = sizeof(struct dbeng_send_message);
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
slm->type = DBENG_SEND_FIND_FIELD_PART;
sprintf(slm->dbc, "%d %d '%s' %d", tid, field_num, fdata, cs_flag);
ret = db_cs_code(slm);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_get_nfields(int tid, int *nfields)
{
/* Get number of fields in the current record. Number of fields is
returned in 'nfields' upon success. Function returns 'DBENG_OK'
upon success, an error code otherwise. */
struct dbeng_send_message *slm;
char mname[25];
int size_s_mestruct;
int ret;
strcpy(mname, "db_get_nfields");
logman("%s:enter", mname);
if (tid <= 0)
{
db_io_code_log(mname, "invalid tid", DBENG_NO_SUCH_TID);
return(DBENG_NO_SUCH_TID);
}
if (nfields == (int *)NULL)
{
db_io_code_log(mname, "null[nfields]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
size_s_mestruct = sizeof(struct dbeng_send_message);
*nfields = 0;
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
slm->type = DBENG_SEND_GET_NFIELDS;
sprintf(slm->dbc, "%d", tid);
ret = db_cs_int(slm, nfields);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_get_nsubfields(int tid, int field_num, int *nsubfields)
{
/* Get number of sub-fields in a field. Number of sub-fields is
returned in 'nsubfields' upon success. Function returns 'DBENG_OK'
upon success, an error code otherwise. */
struct dbeng_send_message *slm;
char mname[] = "db_get_nsubfields";
int size_s_mestruct;
int ret;
logman("%s:enter", mname);
if (tid <= 0)
{
db_io_code_log(mname, "invalid tid", DBENG_NO_SUCH_TID);
return(DBENG_NO_SUCH_TID);
}
if (field_num <= 0)
{
db_io_code_log(mname, "out of range[field_num]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
if (nsubfields == (int *)NULL)
{
db_io_code_log(mname, "null[nsubfields]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
size_s_mestruct = sizeof(struct dbeng_send_message);
*nsubfields = 0;
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
slm->type = DBENG_SEND_GET_NSUBFIELDS;
sprintf(slm->dbc, "%d %d", tid, field_num);
ret = db_cs_int(slm, nsubfields);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_get_nsubsubfields(int tid, int field_num, int subfield_num,
int *nsubsubfields)
{
/* Get number of sub-sub-fields in a sub-field. Number of sub-sub-fields is
returned in 'nsubsubfields' upon success. Function returns 'DBENG_OK'
upon success, an error code otherwise. */
struct dbeng_send_message *slm;
char mname[] = "db_get_nsubsubfields";
int size_s_mestruct;
int ret;
logman("%s:enter", mname);
if (tid <= 0)
{
db_io_code_log(mname, "invalid tid", DBENG_NO_SUCH_TID);
return(DBENG_NO_SUCH_TID);
}
if (field_num <= 0)
{
db_io_code_log(mname, "out of range[field_num]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
if (subfield_num <= 0)
{
db_io_code_log(mname, "out of range[subfield_num]",
DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
if (nsubsubfields == (int *)NULL)
{
db_io_code_log(mname, "null[nsubsubfields]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
size_s_mestruct = sizeof(struct dbeng_send_message);
*nsubsubfields = 0;
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
slm->type = DBENG_SEND_GET_NSUBSUBFIELDS;
sprintf(slm->dbc, "%d %d %d", tid, field_num, subfield_num);
ret = db_cs_int(slm, nsubsubfields);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_get_rec_num(int tid, long *rec_num)
{
/* Get the current record number. The record number is returned in
'rec_num' along with 'DBENG_OK' upon success, an error code
upon success, an error code otherwise. */
struct dbeng_send_message *slm;
char mname[25];
int size_s_mestruct;
int ret;
strcpy(mname, "db_get_rec_num");
logman("%s:enter", mname);
if (tid <= 0)
{
db_io_code_log(mname, "invalid tid", DBENG_NO_SUCH_TID);
return(DBENG_NO_SUCH_TID);
}
if (rec_num == (long *)NULL)
{
db_io_code_log(mname, "null[rec_num]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
*rec_num = 0L;
size_s_mestruct = sizeof(struct dbeng_send_message);
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
slm->type = DBENG_SEND_GET_REC_NUM;
sprintf(slm->dbc, "%d", tid);
ret = db_cs_long(slm, rec_num);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_get_pos(int tid, long *pos)
{
/* Get the current record starting file position. The position is
returned in 'pos' along with 'DBENG_OK' upon success, an error code
upon success, an error code otherwise. */
struct dbeng_send_message *slm;
char mname[25];
int size_s_mestruct;
int ret;
strcpy(mname, "db_get_pos");
logman("%s:enter", mname);
if (tid <= 0)
{
db_io_code_log(mname, "invalid tid", DBENG_NO_SUCH_TID);
return(DBENG_NO_SUCH_TID);
}
if (pos == (long *)NULL)
{
db_io_code_log(mname, "null[pos]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
*pos = 0L;
size_s_mestruct = sizeof(struct dbeng_send_message);
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
slm->type = DBENG_SEND_GET_POS;
sprintf(slm->dbc, "%d", tid);
ret = db_cs_long(slm, pos);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_set_pos(int tid, long pos)
{
/* Set the table file position. BE VERY CAREFUL.
Make sure there is a record at the specified
file position. This function, if misused,
can cause the engine to shutdown. Function
returns 'DBENG_OK' upon success, an error
code otherwise. */
struct dbeng_send_message *slm;
char mname[25];
int size_s_mestruct;
int ret;
strcpy(mname, "db_set_pos");
logman("%s:enter", mname);
if (tid <= 0)
{
db_io_code_log(mname, "invalid tid", DBENG_NO_SUCH_TID);
return(DBENG_NO_SUCH_TID);
}
if (pos < 0L)
{
db_io_code_log(mname, "invalid[pos]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
size_s_mestruct = sizeof(struct dbeng_send_message);
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
slm->type = DBENG_SEND_SET_POS;
sprintf(slm->dbc, "%d %ld", tid, pos);
ret = db_cs_code(slm);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_sort(int tid, char *specs)
{
/* Sort a table. Sort specs are expected in 'specs'.
Function returns 'DBENG_OK' upon success, an error
code otherwise. */
struct dbeng_send_message *slm;
char mname[] = "db_sort";
int size_s_mestruct;
int ret;
logman("%s:enter", mname);
if (tid <= 0)
{
db_io_code_log(mname, "invalid tid", DBENG_NO_SUCH_TID);
return(DBENG_NO_SUCH_TID);
}
if (specs == (char *)NULL || !strlen(specs))
{
db_io_code_log(mname, "null or empty[spces]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
size_s_mestruct = sizeof(struct dbeng_send_message);
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
slm->type = DBENG_SEND_SORT;
sprintf(slm->dbc, "%d %s", tid, specs);
ret = db_cs_code(slm);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_get_sort_max_mem(int tid, long *mem)
{
/* Get the current allowable sort max memory allocation. The value is
returned in 'mem' along with 'DBENG_OK' upon success, an error code
otherwise. */
struct dbeng_send_message *slm;
char mname[] = "db_get_sort_max_mem";
int size_s_mestruct;
int ret;
logman("%s:enter", mname);
if (tid <= 0)
{
db_io_code_log(mname, "invalid tid", DBENG_NO_SUCH_TID);
return(DBENG_NO_SUCH_TID);
}
if (mem == (long *)NULL)
{
db_io_code_log(mname, "null[mem]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
*mem = 0L;
size_s_mestruct = sizeof(struct dbeng_send_message);
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
slm->type = DBENG_SEND_GET_SORT_MEM;
sprintf(slm->dbc, "%d", tid);
ret = db_cs_long(slm, mem);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_set_sort_max_mem(int tid, long mem)
{
/* Set the allowable maximum sort memory.
Function returns a 'dbeng' code. */
struct dbeng_send_message *slm;
char mname[] = "db_set_sort_max_mem";
int size_s_mestruct;
int ret;
logman("%s:enter", mname);
if (tid <= 0)
{
db_io_code_log(mname, "invalid tid", DBENG_NO_SUCH_TID);
return(DBENG_NO_SUCH_TID);
}
if (mem < 0L)
{
db_io_code_log(mname, "invalid[mem]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
size_s_mestruct = sizeof(struct dbeng_send_message);
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
slm->type = DBENG_SEND_SET_SORT_MEM;
sprintf(slm->dbc, "%d %ld", tid, mem);
ret = db_cs_code(slm);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_get_sort_max_open_bin(int tid, int *open_bin)
{
/* Get the current allowable sort number of open bin tables. The value is
returned in 'open_bin' along with 'DBENG_OK' upon success, an error code
otherwise. */
struct dbeng_send_message *slm;
char mname[] = "db_get_sort_max_open_bin";
int size_s_mestruct;
int ret;
logman("%s:enter", mname);
if (tid <= 0)
{
db_io_code_log(mname, "invalid tid", DBENG_NO_SUCH_TID);
return(DBENG_NO_SUCH_TID);
}
if (open_bin == (int *)NULL)
{
db_io_code_log(mname, "null[open_bin]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
*open_bin = 0;
size_s_mestruct = sizeof(struct dbeng_send_message);
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
slm->type = DBENG_SEND_GET_SORT_OPEN_BIN;
sprintf(slm->dbc, "%d", tid);
ret = db_cs_int(slm, open_bin);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_set_sort_max_open_bin(int tid, int open_bin)
{
/* Set the allowable maximum number of open bin tables during sort.
Function returns a 'dbeng' code. */
struct dbeng_send_message *slm;
char mname[] = "db_set_sort_max_open_bin";
int size_s_mestruct;
int ret;
logman("%s:enter", mname);
if (tid <= 0)
{
db_io_code_log(mname, "invalid tid", DBENG_NO_SUCH_TID);
return(DBENG_NO_SUCH_TID);
}
if (open_bin <= 0)
{
db_io_code_log(mname, "invalid[open_bin]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
size_s_mestruct = sizeof(struct dbeng_send_message);
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
slm->type = DBENG_SEND_SET_SORT_OPEN_BIN;
sprintf(slm->dbc, "%d %d", tid, open_bin);
ret = db_cs_code(slm);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_get_change_rec_flag(int tid, int *flag)
{
/* Get the current value of 'change_rec_flag'. The flag value is
returned in 'flag' along with 'DBENG_OK' upon success, an error code
upon success, an error code otherwise. */
struct dbeng_send_message *slm;
char mname[25];
int size_s_mestruct;
int ret;
strcpy(mname, "db_get_change_rec_flag");
logman("%s:enter", mname);
if (tid <= 0)
{
db_io_code_log(mname, "invalid tid", DBENG_NO_SUCH_TID);
return(DBENG_NO_SUCH_TID);
}
if (flag == (int *)NULL)
{
db_io_code_log(mname, "null[flag]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
*flag = FALSE;
size_s_mestruct = sizeof(struct dbeng_send_message);
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
slm->type = DBENG_SEND_GET_CHANGE_REC_FLAG;
sprintf(slm->dbc, "%d", tid);
ret = db_cs_int(slm, flag);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_set_change_rec_flag(int tid, int flag)
{
/* Set the value of 'change_rec_flag'. The function returns
'DBENG_OK' upon success, an error code upon success, an error
code otherwise. */
struct dbeng_send_message *slm;
char mname[25];
int size_s_mestruct;
int ret;
strcpy(mname, "db_set_change_rec_flag");
logman("%s:enter", mname);
if (tid <= 0)
{
db_io_code_log(mname, "invalid tid", DBENG_NO_SUCH_TID);
return(DBENG_NO_SUCH_TID);
}
if (flag != TRUE && flag != FALSE)
{
db_io_code_log(mname, "invalid[flag]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
size_s_mestruct = sizeof(struct dbeng_send_message);
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
slm->type = DBENG_SEND_SET_CHANGE_REC_FLAG;
sprintf(slm->dbc, "%d %d", tid, flag);
ret = db_cs_code(slm);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_get_enf_change_rec_flag(int tid, int *flag)
{
/* Get the current value of 'enforce_change_rec_flag'. The flag value is
returned in 'flag' along with 'DBENG_OK' upon success, an error code
upon success, an error code otherwise. */
struct dbeng_send_message *slm;
char mname[30];
int size_s_mestruct;
int ret;
strcpy(mname, "db_get_enf_change_rec_flag");
logman("%s:enter", mname);
if (tid <= 0)
{
db_io_code_log(mname, "invalid tid", DBENG_NO_SUCH_TID);
return(DBENG_NO_SUCH_TID);
}
if (flag == (int *)NULL)
{
db_io_code_log(mname, "null[flag]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
*flag = FALSE;
size_s_mestruct = sizeof(struct dbeng_send_message);
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
slm->type = DBENG_SEND_GET_ENF_CHANGE_REC_FLAG;
sprintf(slm->dbc, "%d", tid);
ret = db_cs_int(slm, flag);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_set_enf_change_rec_flag(int tid, int flag)
{
/* Set the value of 'enforce_change_rec_flag'. The function returns
'DBENG_OK' upon success, an error code upon success, an error
code otherwise. */
struct dbeng_send_message *slm;
char mname[30];
int size_s_mestruct;
int ret;
strcpy(mname, "db_set_enf_change_rec_flag");
logman("%s:enter", mname);
if (tid <= 0)
{
db_io_code_log(mname, "invalid tid", DBENG_NO_SUCH_TID);
return(DBENG_NO_SUCH_TID);
}
if (flag != TRUE && flag != FALSE)
{
db_io_code_log(mname, "invalid[flag]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
size_s_mestruct = sizeof(struct dbeng_send_message);
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
slm->type = DBENG_SEND_SET_ENF_CHANGE_REC_FLAG;
sprintf(slm->dbc, "%d %d", tid, flag);
ret = db_cs_code(slm);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_get_autopack(int tid, int *pval)
{
/* Get the current value of 'autopack'. The value is
returned in 'pval' along with 'DBENG_OK' upon success, an error code
upon success, an error code otherwise. */
struct dbeng_send_message *slm;
char mname[] = "db_get_autopack";
int size_s_mestruct;
int ret;
logman("%s:enter", mname);
if (tid <= 0)
{
db_io_code_log(mname, "invalid tid", DBENG_NO_SUCH_TID);
return(DBENG_NO_SUCH_TID);
}
if (pval == (int *)NULL)
{
db_io_code_log(mname, "null[pval]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
*pval = FALSE;
size_s_mestruct = sizeof(struct dbeng_send_message);
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
slm->type = DBENG_SEND_GET_AUTOPACK;
sprintf(slm->dbc, "%d", tid);
ret = db_cs_int(slm, pval);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_set_autopack(int tid, int pval)
{
/* Set the value of 'autopack'. The function returns
'DBENG_OK' upon success, an error code upon success, an error
code otherwise. */
struct dbeng_send_message *slm;
char mname[] = "db_set_autopack";
int size_s_mestruct;
int ret;
logman("%s:enter", mname);
if (tid <= 0)
{
db_io_code_log(mname, "invalid tid", DBENG_NO_SUCH_TID);
return(DBENG_NO_SUCH_TID);
}
if (pval < 0)
{
db_io_code_log(mname, "invalid[pval]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
size_s_mestruct = sizeof(struct dbeng_send_message);
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
slm->type = DBENG_SEND_SET_AUTOPACK;
sprintf(slm->dbc, "%d %d", tid, pval);
ret = db_cs_code(slm);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_get_rec_count(int tid, long *active_num, long *deleted_num)
{
/* Get the active and deleted record count. The count value is
returned along with 'DBENG_OK' upon success, an error code
upon success, an error code otherwise. Note that this function
does not actually count the records in the table but reports
on what the database manager thinks is the record count. */
struct dbeng_send_message *slm;
char mname[] = "db_get_rec_count", buf[128], wrd[128];
int size_s_mestruct;
int ret;
logman("%s:enter", mname);
if (tid <= 0)
{
db_io_code_log(mname, "invalid tid", DBENG_NO_SUCH_TID);
return(DBENG_NO_SUCH_TID);
}
if (active_num == (long *)NULL)
{
db_io_code_log(mname, "null[active_num]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
if (deleted_num == (long *)NULL)
{
db_io_code_log(mname, "null[deleted_num]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
*active_num = *deleted_num = 0L;
size_s_mestruct = sizeof(struct dbeng_send_message);
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
slm->type = DBENG_SEND_GET_REC_COUNT;
sprintf(slm->dbc, "%d", tid);
// server replies with two counts
ret = db_cs_char(slm, buf);
free(slm);
if (ret == DBENG_OK)
{
if (words(buf) < 2)
{
db_io_code_log(mname, "expected two counts", DBENG_INTERNAL_ERROR);
return(DBENG_INTERNAL_ERROR);
}
if (!word(buf, wrd, 1))
{
db_io_code_log(mname, "error extracting active count",
DBENG_INTERNAL_ERROR);
return(DBENG_INTERNAL_ERROR);
}
if (!qatol(wrd, active_num))
{
db_io_code_log(mname, "active count not numeric",
DBENG_INTERNAL_ERROR);
return(DBENG_INTERNAL_ERROR);
}
if (!word(buf, wrd, 2))
{
db_io_code_log(mname, "error extracting deleted count",
DBENG_INTERNAL_ERROR);
return(DBENG_INTERNAL_ERROR);
}
if (!qatol(wrd, deleted_num))
{
db_io_code_log(mname, "deleted count not numeric",
DBENG_INTERNAL_ERROR);
return(DBENG_INTERNAL_ERROR);
}
}
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_new(int tid)
{
/* Prepare for a new record. Function will return 'DBENG_OK' upon
success, an error code otherwise. */
struct dbeng_send_message *slm;
char mname[25];
int size_s_mestruct;
int ret;
strcpy(mname, "db_new");
logman("%s:enter", mname);
if (tid <= 0)
{
db_io_code_log(mname, "invalid tid", DBENG_NO_SUCH_TID);
return(DBENG_NO_SUCH_TID);
}
size_s_mestruct = sizeof(struct dbeng_send_message);
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
slm->type = DBENG_SEND_NEW;
sprintf(slm->dbc, "%d", tid);
ret = db_cs_code(slm);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_get_is_table_locked(int tid, int *flag)
{
/* Get the current value of 'is_table_locked'. The flag value is
returned in 'flag' along with 'DBENG_OK' upon success, an error code
upon success, an error code otherwise. */
struct dbeng_send_message *slm;
char mname[25];
int size_s_mestruct;
int ret;
strcpy(mname, "db_get_is_table_locked");
logman("%s:enter", mname);
if (tid <= 0)
{
db_io_code_log(mname, "invalid tid", DBENG_NO_SUCH_TID);
return(DBENG_NO_SUCH_TID);
}
if (flag == (int *)NULL)
{
db_io_code_log(mname, "null[flag]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
*flag = FALSE;
size_s_mestruct = sizeof(struct dbeng_send_message);
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
slm->type = DBENG_SEND_GET_IS_TABLE_LOCKED;
sprintf(slm->dbc, "%d", tid);
ret = db_cs_int(slm, flag);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_set_is_table_locked(int tid, int flag)
{
/* Set the value of 'is_table_locked'. The function returns
'DBENG_OK' upon success, an error code upon success, an error
code otherwise. The value of 'flag' must be zero or one. */
struct dbeng_send_message *slm;
char mname[25];
int size_s_mestruct;
int ret;
strcpy(mname, "db_set_is_table_locked");
logman("%s:enter", mname);
if (tid <= 0)
{
db_io_code_log(mname, "invalid tid", DBENG_NO_SUCH_TID);
return(DBENG_NO_SUCH_TID);
}
if (flag != TRUE && flag != FALSE)
{
db_io_code_log(mname, "invalid[flag]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
size_s_mestruct = sizeof(struct dbeng_send_message);
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
slm->type = DBENG_SEND_SET_IS_TABLE_LOCKED;
sprintf(slm->dbc, "%d %d", tid, flag);
ret = db_cs_code(slm);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_status(void)
{
/* Get dbeng server status.
Function returns 'DBENG_OK' upon success, an error code
otherwise. */
struct dbeng_send_message *slm;
char mname[25];
int size_s_mestruct;
int ret;
strcpy(mname, "db_status");
logman("%s:enter", mname);
size_s_mestruct = sizeof(struct dbeng_send_message);
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
/* fill in a dummy parameter just to satisfy
the engine's minimum two word rule */
slm->type = DBENG_SEND_STATUS;
strcpy(slm->dbc, "dummy");
ret = db_cs_code(slm);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_new_table(char *filename, int *tid)
{
/* Create a new table. If 'tid' is a positive
number, also open the table. Function
returns 'DBENG_OK' upon success with
the table 'tid' loaded if open was
requested. Function returns an engine
i/o code otherwise. */
struct dbeng_send_message *slm;
char mname[25];
int size_s_mestruct;
int ret;
strcpy(mname, "db_new_table");
logman("%s:enter", mname);
size_s_mestruct = sizeof(struct dbeng_send_message);
if (filename == NULL || !strlen(filename))
{
db_io_code_log(mname, "no file name", DBENG_INVALID_FILE_NAME);
return(DBENG_INVALID_FILE_NAME);
}
/* put a reasonable 1kb limit on the file name itself */
if (strlen(filename) > 1023)
{
db_io_code_log(mname, "too long[filename]", DBENG_FILENAME_TOO_LONG);
return(DBENG_FILENAME_TOO_LONG);
}
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
slm->type = DBENG_SEND_NEW_TABLE;
/* pass open flag as parameter and put quotes around
filename in case it contains spaces */
sprintf(slm->dbc, "'%s' %d", filename, *tid);
// return new 'tid' of open requested
ret = db_cs_int(slm, tid);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_version(char *ver)
{
/* Get the Bbuuzzb server version string. Version is returned in
'ver' upon success. Function returns 'DBENG_OK' upon success,
an error code otherwise. */
struct dbeng_send_message *slm;
char mname[25];
int size_s_mestruct;
int ret;
strcpy(mname, "db_version");
logman("%s:enter", mname);
if (ver == (char *)NULL)
{
db_io_code_log(mname, "null[ver]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
ver[0] = EOS;
size_s_mestruct = sizeof(struct dbeng_send_message);
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
slm->type = DBENG_SEND_VERSION;
slm->dbc[0] = EOS;
ret = db_cs_char(slm, ver);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_get_open_table_list(char *pat, char *list_out)
{
/* Get and return a list of open tables. List is returned in
'list_out' upon success. 'list_out' must already be
allocated to sufficient size. List is delimited by
'DBENG_LIST_DELIM'. The parameter 'pat' may contain
an acceptable pattern to the function 'pmatch' consisting
of physical file names. Function returns 'DBENG_OK' upon
success, an error code otherwise. */
struct dbeng_send_message *slm;
char mname[] = "db_get_open_table_list";
int size_s_mestruct;
int ret;
logman("%s:enter", mname);
if (list_out == (char *)NULL)
{
db_io_code_log(mname, "null[list_out]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
list_out[0] = EOS;
size_s_mestruct = sizeof(struct dbeng_send_message);
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
slm->type = DBENG_SEND_GET_OPEN_TABLE_LIST;
if (pat != (char *)NULL && strlen(pat))
strcpy(slm->dbc, pat);
else
slm->dbc[0] = EOS;
ret = db_cs_char(slm, list_out);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_delete_table(char *tname)
{
/* Delete a 'Bbuuzzb' table.
Function returns 'DBENG_OK' upon success, an error code
otherwise. */
struct dbeng_send_message *slm;
char mname[] = "db_delete_table";
int size_s_mestruct;
int ret;
logman("%s:enter", mname);
if (tname == (char *)NULL || !strlen(tname))
{
db_io_code_log(mname, "null or empty[tname]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
size_s_mestruct = sizeof(struct dbeng_send_message);
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
slm->type = DBENG_SEND_DELETE_TABLE;
strcpy(slm->dbc, tname);
ret = db_cs_code(slm);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_exist(char *tname, int *exist_flag)
{
/* Determine whether a table exists.
Function returns 'DBENG_OK' upon success, an error code
otherwise. */
struct dbeng_send_message *slm;
char mname[] = "db_exist";
int size_s_mestruct;
int ret;
logman("%s:enter", mname);
if (tname == (char *)NULL || !strlen(tname))
{
db_io_code_log(mname, "null or empty[tname]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
if (exist_flag == (int *)NULL)
{
db_io_code_log(mname, "null[exist_flag]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
size_s_mestruct = sizeof(struct dbeng_send_message);
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
slm->type = DBENG_SEND_EXIST;
strcpy(slm->dbc, tname);
ret = db_cs_int(slm, exist_flag);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_clear_table(char *tname)
{
/* Clear a table of all records.
Function returns 'DBENG_OK' upon success, an error code
otherwise. */
struct dbeng_send_message *slm;
char mname[] = "db_clear_table";
int size_s_mestruct;
int ret;
logman("%s:enter", mname);
if (tname == (char *)NULL || !strlen(tname))
{
db_io_code_log(mname, "null or empty[tname]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
size_s_mestruct = sizeof(struct dbeng_send_message);
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
slm->type = DBENG_SEND_CLEAR_TABLE;
strcpy(slm->dbc, tname);
ret = db_cs_code(slm);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_copy_table(int src_tid, int dest_tid)
{
/* Copy a table from source to destination.
Function returns 'DBENG_OK' upon success, an error code
otherwise. */
struct dbeng_send_message *slm;
char mname[] = "db_copy_table";
int size_s_mestruct;
int ret;
logman("%s:enter", mname);
if (src_tid <= 0)
{
db_io_code_log(mname, "out of range[src_tid]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
if (dest_tid <= 0)
{
db_io_code_log(mname, "out of range[dest_tid]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
size_s_mestruct = sizeof(struct dbeng_send_message);
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
slm->type = DBENG_SEND_COPY_TABLE;
sprintf(slm->dbc, "%d %d", src_tid, dest_tid);
ret = db_cs_code(slm);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
#ifdef IPC_TCP
void db_get_active(char *hname, int *port)
{
/* Get and return the active 'Bbuuzzb' server host name
and port number. 'hname' must be allocated by the
caller to sufficient size. */
if (hname == (char *)NULL || port == (int *)NULL)
return;
hname[0] = EOS;
*port = 0;
if (!strlen(dbeng_hostname) || dbeng_port == 0)
return;
strcpy(hname, dbeng_hostname);
*port = dbeng_port;
}
int db_replicate_update(void)
{
/* Update all replication details.
Function returns 'DBENG_OK' upon success, an error code
otherwise. */
struct dbeng_send_message *slm;
char mname[] = "db_replicate_update";
int size_s_mestruct;
int ret;
logman("%s:enter", mname);
size_s_mestruct = sizeof(struct dbeng_send_message);
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
slm->type = DBENG_SEND_REPLICATE_UPDATE;
strcpy(slm->dbc, "dummy");
ret = db_cs_code(slm);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
#endif
int db_get_catalog_list(char *pat, char *list_out)
{
/* Get and return a list of catalog entries. List is returned in
'list_out' upon success. 'list_out' must already be
allocated to sufficient size. List is delimited by
'DBENG_LIST_DELIM'. The parameter 'pat' may contain
an acceptable pattern for the function 'pmatch' of
logical table names. Function returns 'DBENG_OK' upon success,
an error code otherwise. */
struct dbeng_send_message *slm;
char mname[] = "db_get_catalog_list";
int size_s_mestruct;
int ret;
logman("%s:enter", mname);
if (list_out == (char *)NULL)
{
db_io_code_log(mname, "null[list_out]", DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
list_out[0] = EOS;
size_s_mestruct = sizeof(struct dbeng_send_message);
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
slm->type = DBENG_SEND_GET_CATALOG_LIST;
if (pat != (char *)NULL && strlen(pat))
strcpy(slm->dbc, pat);
else
slm->dbc[0] = EOS;
ret = db_cs_char(slm, list_out);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_delete_field(int tid, int fnum)
{
/* Completly delete a field. Function returns a 'dbeng' code. */
struct dbeng_send_message *slm;
char mname[] = "db_delete_field";
int size_s_mestruct;
int ret;
if (tid <= 0)
{
db_io_code_log(mname, "invalid tid", DBENG_NO_SUCH_TID);
return(DBENG_NO_SUCH_TID);
}
if (fnum <= 0)
{
db_io_code_log(mname, "illegal field number",DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
logman("%s:enter,t=%d,f=%d", mname, tid, fnum);
size_s_mestruct = sizeof(struct dbeng_send_message);
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
sprintf(slm->dbc, "%d %d", tid, fnum);
slm->type = DBENG_SEND_DELETE_FIELD;
ret = db_cs_code(slm);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_delete_subfield(int tid, int fnum, int sfnum)
{
/* Completly delete a subfield. Function returns a 'dbeng' code. */
struct dbeng_send_message *slm;
char mname[] = "db_delete_subfield";
int size_s_mestruct;
int ret;
if (tid <= 0)
{
db_io_code_log(mname, "invalid tid", DBENG_NO_SUCH_TID);
return(DBENG_NO_SUCH_TID);
}
if (fnum <= 0)
{
db_io_code_log(mname, "illegal field number",DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
if (sfnum <= 0)
{
db_io_code_log(mname, "illegal subfield number",DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
logman("%s:enter,t=%d,f=%d,sf=%d", mname, tid, fnum, sfnum);
size_s_mestruct = sizeof(struct dbeng_send_message);
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
sprintf(slm->dbc, "%d %d %d", tid, fnum, sfnum);
slm->type = DBENG_SEND_DELETE_SUBFIELD;
ret = db_cs_code(slm);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_delete_subsubfield(int tid, int fnum, int sfnum, int ssfnum)
{
/* Completly delete a subsubfield. Function returns a 'dbeng' code. */
struct dbeng_send_message *slm;
char mname[] = "db_delete_subsubfield";
int size_s_mestruct;
int ret;
if (tid <= 0)
{
db_io_code_log(mname, "invalid tid", DBENG_NO_SUCH_TID);
return(DBENG_NO_SUCH_TID);
}
if (fnum <= 0)
{
db_io_code_log(mname, "illegal field number",DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
if (sfnum <= 0)
{
db_io_code_log(mname, "illegal subfield number",DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
if (ssfnum <= 0)
{
db_io_code_log(mname, "illegal subsubfield number",
DBENG_INVALID_FUNCTION);
return(DBENG_INVALID_FUNCTION);
}
logman("%s:enter,t=%d,f=%d,sf=%d,ssf=%d", mname, tid, fnum,
sfnum, ssfnum);
size_s_mestruct = sizeof(struct dbeng_send_message);
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
sprintf(slm->dbc, "%d %d %d %d", tid, fnum, sfnum, ssfnum);
slm->type = DBENG_SEND_DELETE_SUBSUBFIELD;
ret = db_cs_code(slm);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_trans_num(long *trans_num)
{
/* Get the 'bbuuzzb' server current transaction count.
Function returns the transaction count in 'trans_num'
upon success. Function returns a dbeng code. */
struct dbeng_send_message *slm;
char mname[] = "db_trans_num";
int size_s_mestruct, ret;
logman("%s:enter", mname);
if (trans_num == (long *)NULL)
{
logman("%s:null parm[trans_num]", mname);
return(DBENG_INVALID_FUNCTION);
}
*trans_num = 0L;
size_s_mestruct = sizeof(struct dbeng_send_message);
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
slm->type = DBENG_SEND_TRANS_NUM;
strcpy(slm->dbc, "dummy");
ret = db_cs_long(slm, trans_num);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
int db_connect_num(int *connect_num)
{
/* Get the bbuuzzb server current connection count.
Function returns the connection count in 'connect_num'
upon success. Function returns a 'bbuuzzb' code. */
struct dbeng_send_message *slm;
char mname[] = "db_connect_num";
int size_s_mestruct, ret;
logman("%s:enter", mname);
if (connect_num == (int *)NULL)
{
logman("%s:null parm[connect_num]", mname);
return(DBENG_INVALID_FUNCTION);
}
*connect_num = 0;
size_s_mestruct = sizeof(struct dbeng_send_message);
if ((slm = malloc(size_s_mestruct)) == NULL)
{
db_io_code_log(mname, "alloc fail[slm]", DBENG_MEMORY_FAIL);
return(DBENG_MEMORY_FAIL);
}
slm->type = DBENG_SEND_CONNECT_NUM;
strcpy(slm->dbc, "dummy");
ret = db_cs_int(slm, connect_num);
free(slm);
db_io_code_log(mname, "normal exit", ret);
return(ret);
}
void db_end(void)
{
// Shutdown the API and close any open socket (TCP).
char mname[] = "db_end";
logman("%s:enter", mname);
#ifdef IPC_TCP
dbeng_hostname[0] = EOS;
dbeng_port = 0;
dbeng_is_connect = FALSE;
// only close socket upon API shutdown
#ifdef OS_WIN32
(void)closesocket(db_clientSocket);
#else
close(db_clientSocket);
#endif
#else
dbeng_pid = -1;
#endif
logman("%s:normal exit", mname);
}
/* connect, send and receive functions */
int db_cs_int(struct dbeng_send_message *slm, int *intvalue)
{
/* Send and recveive a message to the DBENG server that returns an
integer value. Function returns a DBENG io code. The returned
integer value will be placed into 'intvalue' upon success. */
char *mess, tmp[50];
int len, nwords, ret;
#ifdef IPC_QNX
char *reply;
int i, sent = FALSE;
#endif
#ifdef IPC_TCP
if (!dbeng_port)
#else
if (dbeng_pid == -1)
#endif
return(DBENG_NO_INIT);
*intvalue = 0;
// estimate length and alloc send/receive buffer
len = strlen(slm->dbc) + 15;
if ((mess = (char *)malloc(len)) == (char *)NULL)
return(DBENG_MEMORY_FAIL);
memset(mess, 0, len);
// format send string
if (len > 5)
sprintf(mess, "%d %s", slm->type, slm->dbc);
else
sprintf(mess, "%d", slm->type);
// send message
#ifdef IPC_QNX
if ((reply = (char *)malloc(len)) == (char *)NULL)
return(DBENG_MEMORY_FAIL);
for(i = 0; i < IPC_SEND_RETRY; i++)
if (!Send(dbeng_pid, mess, reply, len, len))
{
sent = TRUE;
break;
}
if (!sent)
{
free(reply);
free(mess);
return(DBENG_VC_ERROR);
}
strcpy(mess, reply);
free(reply);
#else
if (!ipc_send(db_clientSocket, mess))
{
free(mess);
return(db_failover());
}
memset(mess, 0, len);
// receive reply
if (!ipc_recv(db_clientSocket, mess))
{
free(mess);
return(db_failover());
}
#endif
// s/b two words in reply
nwords = words(mess);
// s/b reply code in word one
if (!word(mess, tmp, 1))
{
free(mess);
return(DBENG_INTERNAL_ERROR);
}
// make sure its a number
if (!qatoi(tmp, &ret))
{
free(mess);
return(DBENG_INTERNAL_ERROR);
}
if (nwords < 2)
{
free(mess);
return(DBENG_INTERNAL_ERROR);
}
// value is in second word
if (!word(mess, tmp, 2))
{
free(mess);
return(DBENG_INTERNAL_ERROR);
}
if (!qatoi(tmp, intvalue))
{
free(mess);
return(DBENG_INTERNAL_ERROR);
}
free(mess);
return(ret);
}
int db_cs_long(struct dbeng_send_message *slm, long *longvalue)
{
/* Send and recveive a message to the DBENG server that returns a
long value. Function returns a DBENG io code. The returned
integer value will be placed into 'intvalue' upon success. */
char *mess, tmp[50];
int len, nwords, ret;
#ifdef IPC_QNX
char *reply;
int i, sent = FALSE;
#endif
#ifdef IPC_TCP
if (!dbeng_port)
#else
if (dbeng_pid == -1)
#endif
return(DBENG_NO_INIT);
*longvalue = 0L;
// estimate length and alloc send/receive buffer
len = strlen(slm->dbc) + 15;
if ((mess = (char *)malloc(len)) == (char *)NULL)
return(DBENG_MEMORY_FAIL);
memset(mess, 0, len);
// format send string
if (len > 5)
sprintf(mess, "%d %s", slm->type, slm->dbc);
else
sprintf(mess, "%d", slm->type);
// send message
#ifdef IPC_QNX
if ((reply = (char *)malloc(len)) == (char *)NULL)
return(DBENG_MEMORY_FAIL);
for(i = 0; i < IPC_SEND_RETRY; i++)
if (!Send(dbeng_pid, mess, reply, len, len))
{
sent = TRUE;
break;
}
if (!sent)
{
free(reply);
free(mess);
return(DBENG_VC_ERROR);
}
strcpy(mess, reply);
free(reply);
#else
if (!ipc_send(db_clientSocket, mess))
{
free(mess);
return(db_failover());
}
memset(mess, 0, len);
// receive reply
if (!ipc_recv(db_clientSocket, mess))
{
free(mess);
return(db_failover());
}
#endif
// s/b two words in reply
nwords = words(mess);
// s/b reply code in word one
if (!word(mess, tmp, 1))
{
free(mess);
return(DBENG_INTERNAL_ERROR);
}
// make sure its a number
if (!qatoi(tmp, &ret))
{
free(mess);
return(DBENG_INTERNAL_ERROR);
}
if (nwords < 2)
{
free(mess);
return(DBENG_INTERNAL_ERROR);
}
// value is in second word
if (!word(mess, tmp, 2))
{
free(mess);
return(DBENG_INTERNAL_ERROR);
}
if (!qatol(tmp, longvalue))
{
free(mess);
return(DBENG_INTERNAL_ERROR);
}
free(mess);
return(ret);
}
int db_cs_code(struct dbeng_send_message *slm)
{
/* Send and recveive a message to the DBENG server that returns no
other value except for the general io return code. Function makes
sure that at least one DBENG database server is running. Function
returns a DBENG io code. */
char *mess;
int i, len;
#ifdef IPC_QNX
char *reply;
int sent = FALSE;
#endif
#ifdef IPC_TCP
if (!dbeng_port)
#else
if (dbeng_pid == -1)
#endif
return(DBENG_NO_INIT);
// connect to server
len = strlen(slm->dbc) + 5;
if ((mess = (char *)malloc(len)) == (char *)NULL)
return(DBENG_MEMORY_FAIL);
memset(mess, 0, len);
if (len > 5)
sprintf(mess, "%d %s", slm->type, slm->dbc);
else
sprintf(mess, "%d", slm->type);
// send message
#ifdef IPC_QNX
if ((reply = (char *)malloc(len)) == (char *)NULL)
return(DBENG_MEMORY_FAIL);
for(i = 0; i < IPC_SEND_RETRY; i++)
if (!Send(dbeng_pid, mess, reply, len, len))
{
sent = TRUE;
break;
}
if (!sent)
{
free(reply);
free(mess);
return(DBENG_VC_ERROR);
}
strcpy(mess, reply);
free(reply);
#else
if (!ipc_send(db_clientSocket, mess))
{
free(mess);
return(db_failover());
}
memset(mess, 0, len);
// receive return code
if (!ipc_recv(db_clientSocket, mess))
{
free(mess);
return(db_failover());
}
#endif
// make sure its a number
if (!qatoi(mess, &i))
{
free(mess);
return(DBENG_INTERNAL_ERROR);
}
free(mess);
return(i);
}
int db_cs_char(struct dbeng_send_message *slm, char *char_value)
{
/* Send and receive a message to the DBENG server that returns a
string as well as an io return code. 'char_value' must already
be allocated to sufficient size for the receiving string.
Function returns a DBENG io code. */
char *mess, tmp[50];
int len, nwords, ret;
#ifdef IPC_QNX
char *reply;
int i, sent = FALSE;
#endif
#ifdef IPC_TCP
if (!dbeng_port)
#else
if (dbeng_pid == -1)
#endif
return(DBENG_NO_INIT);
char_value[0] = EOS;
// estimate length and alloc send buffer
len = strlen(slm->dbc) + 5;
if ((mess = (char *)malloc(len)) == (char *)NULL)
return(DBENG_MEMORY_FAIL);
memset(mess, 0, len);
// format send string
if (len > 5)
sprintf(mess, "%d %s", slm->type, slm->dbc);
else
sprintf(mess, "%d", slm->type);
// send message
#ifdef IPC_QNX
if ((reply = (char *)malloc(DBENG_MAXRECFIELD)) == (char *)NULL)
return(DBENG_MEMORY_FAIL);
for(i = 0; i < IPC_SEND_RETRY; i++)
if (!Send(dbeng_pid, mess, reply, len, DBENG_MAXRECFIELD))
{
sent = TRUE;
break;
}
if (!sent)
{
free(reply);
free(mess);
return(DBENG_VC_ERROR);
}
free(mess);
if ((mess = initstring(reply)) == (char *)NULL)
return(DBENG_MEMORY_FAIL);
free(reply);
#else
if (!ipc_send(db_clientSocket, mess))
{
free(mess);
return(db_failover());
}
free(mess);
// re-allocate 'mess' for receive buffer (max size)
if ((mess = (char *)malloc(DBENG_MAXRECFIELD)) == (char *)NULL)
return(DBENG_MEMORY_FAIL);
memset(mess, 0, DBENG_MAXRECFIELD);
// receive reply
if (!ipc_recv(db_clientSocket, mess))
{
free(mess);
return(db_failover());
}
#endif
// s/b two words in reply
nwords = command_words(mess);
// s/b reply code in word one
if (!command_word(mess, tmp, 1))
{
free(mess);
return(DBENG_INTERNAL_ERROR);
}
// make sure its a number
if (!qatoi(tmp, &ret))
{
free(mess);
return(DBENG_INTERNAL_ERROR);
}
// if reply is 'ok', load 'char_value'
if (ret == DBENG_OK)
{
if (nwords < 2)
{
free(mess);
return(DBENG_INTERNAL_ERROR);
}
// 'char_value' is in second word
if (!command_word(mess, char_value, 2))
{
free(mess);
return(DBENG_INTERNAL_ERROR);
}
}
free(mess);
return(ret);
}
/* private functions */
#ifdef IPC_TCP
static int db_cs_client_connect(void)
{
/* Connect to the Bbuuzzb server. An attempt to open the TCP
socket is made. The host name 'dbeng_hostname' and the
TCP port 'dbeng_port' are assumed to be already loaded
via 'db_initialize'. Function returns 'TRUE' if a
successful connection was made, 'FALSE' otherwise.
Private function. */
char mname[] = "db_cs_client_connect";
if (dbeng_is_connect)
{
logman("%s:already connected", mname);
return(TRUE);
}
// resolve server host name
db_lpHostEnt = gethostbyname(dbeng_hostname);
if (!db_lpHostEnt)
{
logman("%s:unable to resolve bbuuzzb server host name", mname);
return(FALSE);
}
// create the socket
#ifdef OS_WIN32
db_clientSocket = socket(PF_INET, SOCK_STREAM, DEFAULT_PROTOCOL);
#endif
#ifdef OS_UNIX
db_clientSocket = socket(AF_INET, SOCK_STREAM, DEFAULT_PROTOCOL);
#endif
if (db_clientSocket == INVALID_SOCKET)
{
logman("%s:unable to open the bbuuzzb server socket", mname);
return(FALSE);
}
// load client address data
memset(&db_sockClientAddr, 0, sizeof(db_sockClientAddr));
db_sockClientAddr.sin_family = AF_INET;
db_sockClientAddr.sin_port = htons(dbeng_port);
#ifdef OS_WIN32
db_sockClientAddr.sin_addr = *((LPIN_ADDR)*db_lpHostEnt->h_addr_list);
#endif
#ifdef OS_UNIX
db_sockClientAddr.sin_addr.s_addr = ((struct in_addr *)(db_lpHostEnt->h_addr))->s_addr;
#endif
// connect to server
#ifdef OS_WIN32
if (connect(db_clientSocket, (LPSOCKADDR)&db_sockClientAddr,
sizeof(db_sockClientAddr)))
#endif
#ifdef OS_UNIX
if (connect(db_clientSocket, (SA *)&db_sockClientAddr,
sizeof(db_sockClientAddr)) == SOCKET_ERROR)
#endif
{
logman("%s:error connecting the socket to the bbuuzzb "
"server", mname);
return(FALSE);
}
dbeng_is_connect = TRUE;
return(TRUE);
}
static int db_failover(void)
{
/* Failover to another 'Bbuuzzb' server. Function
returns a 'dbeng' code. */
char mname[] = "db_failover";
char mes[128];
int ret;
logman("%s:enter", mname);
dbeng_is_connect = FALSE;
// close current socket
#ifdef OS_WIN32
(void)closesocket(db_clientSocket);
#else
close(db_clientSocket);
#endif
/* attempt to delete server that has failed */
if ((ret = sloc_delete(dbeng_port)) != SL_OK)
{
/* if delete fails log a message but continue */
sl_code_string(ret, mes);
logman("%s:bad rc[%s] from sloc_delete", mname, mes);
}
dbeng_hostname[0] = EOS;
dbeng_port = 0;
if ((ret = sloc_find(DBENG_SERVICE_NAME, dbeng_hostname, &dbeng_port,
(char *)NULL)) != SL_OK)
{
sl_code_string(ret, mes);
logman("%s:bad rc[%s] from sloc_find", mname, mes);
return(DBENG_NO_SERVER);
}
if (!db_cs_client_connect())
{
logman("%s:bad rc[FALSE] from db_cs_client_connect", mname);
return(DBENG_VC_ERROR);
}
logman("%s:normal exit,rc[0]", mname);
return(DBENG_FAILOVER);
}
#endif