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dblib.c
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/* FreeTDS - Library of routines accessing Sybase and Microsoft databases
* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005 Brian Bruns
* Copyright (C) 2006-2015 Frediano Ziglio
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <config.h>
#include <stdarg.h>
#include <freetds/time.h>
#include <assert.h>
#include <stdio.h>
#if HAVE_STDLIB_H
#include <stdlib.h>
#endif /* HAVE_STDLIB_H */
#if HAVE_STRING_H
#include <string.h>
#endif /* HAVE_STRING_H */
#if HAVE_UNISTD_H
#include <unistd.h>
#endif /* HAVE_UNISTD_H */
#if HAVE_ERRNO_H
# include <errno.h>
#endif /* HAVE_ERRNO_H */
/**
* \ingroup dblib_core
* \remarks Either SYBDBLIB or MSDBLIB (not both) must be defined.
* This affects how certain application-addressable
* strucures are defined.
*/
#include <freetds/tds.h>
#include <freetds/thread.h>
#include <freetds/convert.h>
#include <freetds/utils/string.h>
#include <freetds/data.h>
#include <freetds/replacements.h>
#include <sybfront.h>
#include <sybdb.h>
#include <syberror.h>
#include <dblib.h>
static RETCODE _dbresults(DBPROCESS * dbproc);
static BYTE *_dbcoldata(TDSCOLUMN *colinfo);
static int _get_printable_size(TDSCOLUMN * colinfo);
static char *_dbprdate(char *timestr);
static int _dbnullable(DBPROCESS * dbproc, int column);
static const char *tds_prdatatype(int datatype_token);
static int default_err_handler(DBPROCESS * dbproc, int severity, int dberr, int oserr, char *dberrstr, char *oserrstr);
void copy_data_to_host_var(DBPROCESS *, TDS_SERVER_TYPE, const BYTE *, int, BYTE *, DBINT, int, DBINT *);
RETCODE dbgetnull(DBPROCESS *dbproc, int bindtype, int varlen, BYTE* varaddr);
/**
* \file dblib.c
* Main implementation file for \c db-lib.
*/
/**
* \file bcp.c
* Implementation of \c db-lib bulk copy functions.
*/
/**
* \defgroup dblib_api The db-lib API
* Functions callable by \c db-lib client programs
*
* The \c db_lib interface is implemented by both Sybase and Microsoft. FreeTDS seeks to implement
* first the intersection of the functions defined by the vendors.
*/
/**
* \ingroup dblib_api
* \defgroup dblib_core Primary functions
* Core functions needed by most db-lib programs.
*/
/**
* \ingroup dblib_api
* \defgroup dblib_rpc Remote Procedure functions
* Functions used with stored procedures.
* Especially useful for OUTPUT parameters, because modern Microsoft servers do not
* return output parameter data to the client unless the procedure was invoked
* with dbrpcsend().
*/
/**
* \ingroup dblib_api
* \defgroup dblib_bcp Bulk copy functions
* Functions to bulk-copy (a/k/a \em bcp) data to/from the database.
*/
/**
* \ingroup dblib_bcp
* \defgroup dblib_bcp_internal Internal bcp functions
* Static functions internal to the bcp library.
*/
/**
* \ingroup dblib_api
* \defgroup dblib_money Money functions
* Functions to manipulate the MONEY datatype.
*/
/**
* \ingroup dblib_api
* \defgroup dblib_datetime Datetime functions
* Functions to manipulate DBDATETIME structures. Defined by Sybase only.
* These are not implemented:
* - dbdate4cmp()
* - dbdate4zero()
* - dbdatechar()
* - dbdatename()
* - dbdateorder()
* - dbdatepart()
* - dbdatezero()
* - dbdayname()
*/
/**
* \ingroup dblib_api
* \defgroup dblib_internal Internals
* Functions called within \c db-lib for self-help.
* These functions are of interest only to people hacking on the FreeTDS db-lib implementation.
*/
/**
* \ingroup dblib_api
* \defgroup dblib_unimplemented Unimplemented
* Functions thus far not implemented in the FreeTDS db-lib implementation.
* While some of these are simply awaiting someone with time and skill (and inclination)
* it might be noted here that the old browse functions (e.g. dbcolbrowse())
* are on the never-to-do list.
* They were defined by Sybase and were superseded long ago, although they're still
* present in Microsoft's implementation.
* They were never popular and today better alternatives are available.
* For completeness, they are:
* - dbcolbrowse()
* - dbcolsource()
* - dbfreequal()
* - dbqual()
* - dbtabbrowse()
* - dbtabcount()
* - dbtabname()
* - dbtabsource()
* - dbtsnewlen()
* - dbtsnewval()
* - dbtsput()
*/
/* info/err message handler functions (or rather pointers to them) */
MHANDLEFUNC _dblib_msg_handler = NULL;
EHANDLEFUNC _dblib_err_handler = default_err_handler;
/** \internal
* \dblib_internal
* \remarks A db-lib connection has an implicit TDS context.
*/
typedef struct dblib_context
{
/** reference count, time dbinit called */
int ref_count;
/** libTDS context */
TDSCONTEXT *tds_ctx;
/** libTDS context reference counter */
int tds_ctx_ref_count;
/* save all connection in a list */
TDSSOCKET **connection_list;
int connection_list_size;
int connection_list_size_represented;
char *recftos_filename;
int recftos_filenum;
int login_timeout; /**< not used unless positive */
int query_timeout; /**< not used unless positive */
}
DBLIBCONTEXT;
static DBLIBCONTEXT g_dblib_ctx;
static tds_mutex dblib_mutex = TDS_MUTEX_INITIALIZER;
static int g_dblib_version =
#if TDS50
DBVERSION_100;
#elif TDS71
DBVERSION_71;
#elif TDS72
DBVERSION_72;
#elif TDS73
DBVERSION_73;
#elif TDS74
DBVERSION_74;
#else
DBVERSION_UNKNOWN;
#endif
static int
dblib_add_connection(DBLIBCONTEXT * ctx, TDSSOCKET * tds)
{
int i = 0;
const int list_size = ctx->connection_list_size_represented;
tdsdump_log(TDS_DBG_FUNC, "dblib_add_connection(%p, %p)\n", ctx, tds);
while (i < list_size && ctx->connection_list[i])
i++;
if (i == list_size) {
return 1;
} else {
ctx->connection_list[i] = tds;
return 0;
}
}
static void
dblib_del_connection(DBLIBCONTEXT * ctx, TDSSOCKET * tds)
{
int i = 0;
const int list_size = ctx->connection_list_size;
tdsdump_log(TDS_DBG_FUNC, "dblib_del_connection(%p, %p)\n", ctx, tds);
while (i < list_size && ctx->connection_list[i] != tds)
i++;
if (i == list_size) {
/* connection wasn't on the free list...now what */
} else {
/* remove it */
ctx->connection_list[i] = NULL;
}
}
static TDSCONTEXT*
dblib_get_tds_ctx(void)
{
tdsdump_log(TDS_DBG_FUNC, "dblib_get_tds_ctx(void)\n");
tds_mutex_lock(&dblib_mutex);
++g_dblib_ctx.tds_ctx_ref_count;
if (g_dblib_ctx.tds_ctx == NULL) {
g_dblib_ctx.tds_ctx = tds_alloc_context(&g_dblib_ctx);
/*
* Set the functions in the TDS layer to point to the correct handler functions
*/
g_dblib_ctx.tds_ctx->msg_handler = _dblib_handle_info_message;
g_dblib_ctx.tds_ctx->err_handler = _dblib_handle_err_message;
g_dblib_ctx.tds_ctx->int_handler = _dblib_check_and_handle_interrupt;
if (g_dblib_ctx.tds_ctx->locale && !g_dblib_ctx.tds_ctx->locale->datetime_fmt) {
/* set default in case there's no locale file */
static const char datetime_format[] = "%b %e %Y %l:%M:%S:%z%p";
g_dblib_ctx.tds_ctx->locale->datetime_fmt = strdup(datetime_format);
}
}
tds_mutex_unlock(&dblib_mutex);
return g_dblib_ctx.tds_ctx;
}
static void
dblib_release_tds_ctx(int count)
{
tdsdump_log(TDS_DBG_FUNC, "dblib_release_tds_ctx(%d)\n", count);
tds_mutex_lock(&dblib_mutex);
g_dblib_ctx.tds_ctx_ref_count -= count;
if (g_dblib_ctx.tds_ctx_ref_count <= 0) {
tds_free_context(g_dblib_ctx.tds_ctx);
g_dblib_ctx.tds_ctx = NULL;
}
tds_mutex_unlock(&dblib_mutex);
}
#include "buffering.h"
static void
db_env_chg(TDSSOCKET * tds, int type, char *oldval, char *newval)
{
DBPROCESS *dbproc;
assert(oldval != NULL && newval != NULL);
if (strlen(oldval) == 1 && *oldval == 1)
oldval = "(0x1)";
tdsdump_log(TDS_DBG_FUNC, "db_env_chg(%p, %d, %s, %s)\n", tds, type, oldval, newval);
if (!tds || !tds_get_parent(tds))
return;
dbproc = (DBPROCESS *) tds_get_parent(tds);
dbproc->envchange_rcv |= (1 << (type - 1));
switch (type) {
case TDS_ENV_DATABASE:
strlcpy(dbproc->dbcurdb, newval, sizeof(dbproc->dbcurdb));
break;
case TDS_ENV_CHARSET:
strlcpy(dbproc->servcharset, newval, sizeof(dbproc->servcharset));
break;
default:
break;
}
return;
}
/** \internal
* \ingroup dblib_internal
* \brief Sanity checks for column-oriented functions.
*
* \param dbproc contains all information needed by db-lib to manage communications with the server.
* \param pcolinfo address of pointer to a TDSCOLUMN structure.
* \remarks Makes sure dbproc and the requested column are valid.
* Calls dbperror() if not.
* \returns appropriate error or SUCCEED
*/
static TDSCOLUMN*
dbcolptr(DBPROCESS* dbproc, int column)
{
TDSSOCKET *tds;
TDSRESULTINFO *info;
if (!dbproc) {
dbperror(dbproc, SYBENULL, 0);
return NULL;
}
tds = dbproc->tds_socket;
if (IS_TDSDEAD(tds)) {
dbperror(dbproc, SYBEDDNE, 0);
return NULL;
}
info = tds->res_info;
if (!info)
return NULL;
if (column < 1 || column > info->num_cols) {
dbperror(dbproc, SYBECNOR, 0);
return NULL;
}
return info->columns[column - 1];
}
static TDSCOLUMN*
dbacolptr(DBPROCESS* dbproc, int computeid, int column, bool is_bind)
{
unsigned int i;
TDSSOCKET *tds;
TDSCOMPUTEINFO *info;
if (!dbproc) {
dbperror(dbproc, SYBENULL, 0);
return NULL;
}
tds = dbproc->tds_socket;
if (IS_TDSDEAD(tds)) {
dbperror(dbproc, SYBEDDNE, 0);
return NULL;
}
for (i = 0;; ++i) {
if (i >= tds->num_comp_info) {
/* Attempt to bind user variable to a non-existent compute row */
if (is_bind)
dbperror(dbproc, SYBEBNCR, 0);
return NULL;
}
info = tds->comp_info[i];
if (info->computeid == computeid)
break;
}
/* Fail if either the compute id or the column number is invalid. */
if (column < 1 || column > info->num_cols) {
dbperror(dbproc, is_bind ? SYBEABNC : SYBECNOR, 0);
return NULL;
}
return info->columns[column - 1];
}
/*
* Default null substitution values
* Binding Type Null Substitution Value
* TINYBIND 0
* SMALLBIND 0
* INTBIND 0
* CHARBIND Empty string (padded with blanks)
* STRINGBIND Empty string (padded with blanks, null-terminated)
* NTBSTRINGBIND Empty string (null-terminated)
* VARYCHARBIND Empty string
* BINARYBIND Empty array (padded with zeros)
* VARYBINBIND Empty array
* DATETIMEBIND 8 bytes of zeros
* SMALLDATETIMEBIND 8 bytes of zeros
* MONEYBIND $0.00
* SMALLMONEYBIND $0.00
* FLT8BIND 0.0
* REALBIND 0.0
* DECIMALBIND 0.0 (with default scale and precision)
* NUMERICBIND 0.0 (with default scale and precision)
* BOUNDARYBIND Empty string (null-terminated)
* SENSITIVITYBIND Empty string (null-terminated)
*/
static const DBBIT null_BIT = 0;
static const DBTINYINT null_TINYINT = 0;
static const DBSMALLINT null_SMALLINT = 0;
static const DBINT null_INT = 0;
static const DBBIGINT null_BIGINT = 0;
static const DBFLT8 null_FLT8 = 0;
static const DBREAL null_REAL = 0;
static const DBCHAR null_CHAR = '\0';
static const DBVARYCHAR null_VARYCHAR = { 0, {0} };
static const DBDATETIME null_DATETIME = { 0, 0 };
static const DBDATETIME4 null_SMALLDATETIME = { 0, 0 };
static const DBMONEY null_MONEY = { 0, 0 };
static const DBMONEY4 null_SMALLMONEY = {0};
static const DBNUMERIC null_NUMERIC = { 0, 0, {0} };
static const TDS_DATETIMEALL null_DATETIMEALL = { 0, 0, 0, 0 };
static NULLREP default_null_representations[MAXBINDTYPES] = {
/* CHARBIND 0 */ { NULL, 0 }
/* STRINGBIND 1 */ , { NULL, 0 }
/* NTBSTRINGBIND 2 */ , { (BYTE*) &null_CHAR, sizeof(null_CHAR) }
/* VARYCHARBIND 3 */ , { (BYTE*) &null_VARYCHAR, sizeof(null_VARYCHAR) }
/* VARYBINBIND 4 */ , { (BYTE*) &null_VARYCHAR, sizeof(null_VARYCHAR) }
/* no such bind 5 */ , { NULL, 0 }
/* TINYBIND 6 */ , { &null_TINYINT, sizeof(null_TINYINT) }
/* SMALLBIND 7 */ , { (BYTE*) &null_SMALLINT, sizeof(null_SMALLINT) }
/* INTBIND 8 */ , { (BYTE*) &null_INT, sizeof(null_INT) }
/* FLT8BIND 9 */ , { (BYTE*) &null_FLT8, sizeof(null_FLT8) }
/* REALBIND 10 */ , { (BYTE*) &null_REAL, sizeof(null_REAL) }
/* DATETIMEBIND 11 */ , { (BYTE*) &null_DATETIME, sizeof(null_DATETIME) }
/* SMALLDATETIMEBIND 12 */ , { (BYTE*) &null_SMALLDATETIME, sizeof(null_SMALLDATETIME) }
/* MONEYBIND 13 */ , { (BYTE*) &null_MONEY, sizeof(null_MONEY) }
/* SMALLMONEYBIND 14 */ , { (BYTE*) &null_SMALLMONEY, sizeof(null_SMALLMONEY) }
/* BINARYBIND 15 */ , { NULL, 0 }
/* BITBIND 16 */ , { &null_BIT, sizeof(null_BIT) }
/* NUMERICBIND 17 */ , { (BYTE*) &null_NUMERIC, sizeof(null_NUMERIC) }
/* DECIMALBIND 18 */ , { (BYTE*) &null_NUMERIC, sizeof(null_NUMERIC) }
/* SRCNUMERICBIND 19 */ , { (BYTE*) &null_NUMERIC, sizeof(null_NUMERIC) }
/* SRCDECIMALBIND 20 */ , { (BYTE*) &null_NUMERIC, sizeof(null_NUMERIC) }
/* DATEBIND 21 */ , { (BYTE*) &null_INT, sizeof(null_INT) }
/* TIMEBIND 22 */ , { (BYTE*) &null_INT, sizeof(null_INT) }
/* BIGDATETIMEBIND 23 */ , { (BYTE*) &null_BIGINT, sizeof(null_BIGINT) }
/* BIGTIMEBIND 24 */ , { (BYTE*) &null_BIGINT, sizeof(null_BIGINT) }
/* 25 */ , { NULL, 0 }
/* 26 */ , { NULL, 0 }
/* 27 */ , { NULL, 0 }
/* 28 */ , { NULL, 0 }
/* 29 */ , { NULL, 0 }
/* BIGINTBIND 30 */ , { (BYTE*) &null_BIGINT, sizeof(null_BIGINT) }
/* DATETIME2BIND 31 */ , { (BYTE*) &null_DATETIMEALL, sizeof(null_DATETIMEALL) }
/* MAXBINDTYPES 32 */
};
static int
dbbindtype(int datatype)
{
switch (datatype) {
case SYBIMAGE:
case SYBVARBINARY:
case SYBBINARY: return BINARYBIND;
case SYBBIT: return BITBIND;
case SYBLONGCHAR:
case SYBTEXT:
case SYBVARCHAR:
case SYBCHAR: return NTBSTRINGBIND;
case SYBDATETIME: return DATETIMEBIND;
case SYBDATETIME4: return SMALLDATETIMEBIND;
case SYBDATE: return DATEBIND;
case SYBTIME: return TIMEBIND;
case SYB5BIGDATETIME: return BIGDATETIMEBIND;
case SYB5BIGTIME: return BIGTIMEBIND;
case SYBDECIMAL: return DECIMALBIND;
case SYBNUMERIC: return NUMERICBIND;
case SYBFLT8: return FLT8BIND;
case SYBREAL: return REALBIND;
case SYBINT1: return TINYBIND;
case SYBINT2: return SMALLBIND;
case SYBINT4: return INTBIND;
case SYBINT8: return BIGINTBIND;
case SYBMONEY: return MONEYBIND;
case SYBMONEY4: return SMALLMONEYBIND;
case SYBMSDATE:
case SYBMSTIME:
case SYBMSDATETIME2:
case SYBMSDATETIMEOFFSET:
return DATETIME2BIND;
default:
assert(0 == "no such datatype");
}
return 0;
}
/** \internal
* dbbind() says: "Note that if varlen is 0, no padding takes place"
* dbgetnull() will not pad varaddr unless varlen is positive.
* Vartype Program Type Padding Terminator
* ------------------- -------------- -------------- ----------
* CHARBIND DBCHAR blanks none
* STRINGBIND DBCHAR blanks \0
* NTBSTRINGBIND DBCHAR none \0
* VARYCHARBIND DBVARYCHAR none none
* BOUNDARYBIND DBCHAR none \0
* SENSITIVITYBIND DBCHAR none \0
*/
RETCODE
dbgetnull(DBPROCESS *dbproc, int bindtype, int varlen, BYTE* varaddr)
{
NULLREP *pnullrep = default_null_representations + bindtype;
tdsdump_log(TDS_DBG_FUNC, "dbgetnull(%p, %d, %d, %p)\n", dbproc, bindtype, varlen, varaddr);
CHECK_PARAMETER(varaddr, SYBENULL, FAIL);
CHECK_PARAMETER(0 <= bindtype && bindtype < MAXBINDTYPES, SYBEBTYP, FAIL);
/* dbproc can be NULL */
if (NULL != dbproc) {
assert(dbproc->nullreps);
pnullrep = dbproc->nullreps + bindtype;
}
/*
* Fixed types: ignore varlen
* Other types: ignore varlen if <= 0, else varlen must be >= pnullrep->len.
*/
switch (bindtype) {
case DATETIMEBIND:
case DATETIME2BIND:
case DECIMALBIND:
case SRCDECIMALBIND:
case FLT8BIND:
case INTBIND:
case MONEYBIND:
case NUMERICBIND:
case SRCNUMERICBIND:
case REALBIND:
case SMALLBIND:
case SMALLDATETIMEBIND:
case SMALLMONEYBIND:
case TINYBIND:
case BIGINTBIND:
case BITBIND:
case TIMEBIND:
case DATEBIND:
case BIGDATETIMEBIND:
case BIGTIMEBIND:
memcpy(varaddr, pnullrep->bindval, pnullrep->len);
return SUCCEED;
case CHARBIND:
case STRINGBIND:
case NTBSTRINGBIND:
case BINARYBIND:
case VARYCHARBIND:
case VARYBINBIND:
if (pnullrep->bindval && (varlen <= 0 || (size_t)varlen >= pnullrep->len)) {
memcpy(varaddr, pnullrep->bindval, pnullrep->len);
}
break;
default:
dbperror(dbproc, SYBEBTYP, 0);
return FAIL;
}
/*
* For variable-length types, nonpositive varlen indicates
* buffer is "big enough" but also not to pad.
* Apply terminator (if applicable) and go home.
*/
if (varlen <= 0) {
varlen = pnullrep->len;
switch (bindtype) {
case STRINGBIND:
case NTBSTRINGBIND:
++varlen;
break;
#if 0
case BOUNDARYBIND:
case SENSITIVITYBIND:
#endif
}
}
if (varlen < (long)pnullrep->len) {
tdsdump_log(TDS_DBG_FUNC, "dbgetnull: error: not setting varaddr(%p) because %d < %lu\n",
varaddr, varlen, (unsigned long int) pnullrep->len);
return FAIL;
}
tdsdump_log(TDS_DBG_FUNC, "varaddr(%p) varlen %d < %lu?\n",
varaddr, varlen, (unsigned long int) pnullrep->len);
assert(varlen >= 0);
/*
* CHARBIND Empty string (padded with blanks)
* STRINGBIND Empty string (padded with blanks, null-terminated)
* NTBSTRINGBIND Empty string (unpadded, null-terminated)
* BINARYBIND Empty array (padded with zeros)
*/
varaddr += pnullrep->len;
varlen -= (int)pnullrep->len;
if (varlen > 0) {
switch (bindtype) {
case CHARBIND:
memset(varaddr, ' ', varlen);
break;
case STRINGBIND:
memset(varaddr, ' ', varlen);
varaddr[varlen-1] = '\0';
break;
case NTBSTRINGBIND:
varaddr[0] = '\0';
break;
case BINARYBIND:
memset(varaddr, 0, varlen);
break;
case VARYCHARBIND:
case VARYBINBIND:
break;
default:
assert(!"unknown bindtype");
}
}
return SUCCEED;
}
/**
* \ingroup dblib_core
* \brief Initialize db-lib.
*
* \remarks Call this function before trying to use db-lib in any way.
* Allocates various internal structures and reads \c locales.conf (if any) to determine the default
* date format.
* \retval SUCCEED normal.
* \retval FAIL cannot allocate an array of \c TDS_MAX_CONN \c TDSSOCKET pointers.
*/
RETCODE
dbinit(void)
{
_dblib_err_handler = default_err_handler;
tds_mutex_lock(&dblib_mutex);
tdsdump_log(TDS_DBG_FUNC, "dbinit(void)\n");
if (++g_dblib_ctx.ref_count != 1) {
tds_mutex_unlock(&dblib_mutex);
return SUCCEED;
}
/*
* DBLIBCONTEXT stores a list of current connections so they may be closed with dbexit()
*/
g_dblib_ctx.connection_list = tds_new0(TDSSOCKET *, TDS_MAX_CONN);
if (g_dblib_ctx.connection_list == NULL) {
tdsdump_log(TDS_DBG_FUNC, "dbinit: out of memory\n");
tds_mutex_unlock(&dblib_mutex);
return FAIL;
}
g_dblib_ctx.connection_list_size = TDS_MAX_CONN;
g_dblib_ctx.connection_list_size_represented = TDS_MAX_CONN;
g_dblib_ctx.login_timeout = -1;
g_dblib_ctx.query_timeout = -1;
tds_mutex_unlock(&dblib_mutex);
dblib_get_tds_ctx();
return SUCCEED;
}
/**
* \ingroup dblib_core
* \brief Allocate a \c LOGINREC structure.
*
* \remarks A \c LOGINREC structure is passed to \c dbopen() to create a connection to the database.
* Does not communicate to the server; interacts strictly with library.
* \retval NULL the \c LOGINREC cannot be allocated.
* \retval LOGINREC* to valid memory, otherwise.
*/
LOGINREC *
dblogin(void)
{
LOGINREC *loginrec;
tdsdump_log(TDS_DBG_FUNC, "dblogin(void)\n");
if ((loginrec = tds_new0(LOGINREC, 1)) == NULL) {
dbperror(NULL, SYBEMEM, errno);
return NULL;
}
if ((loginrec->tds_login = tds_alloc_login(true)) == NULL) {
dbperror(NULL, SYBEMEM, errno);
free(loginrec);
return NULL;
}
/* set default values for loginrec */
if (!tds_set_library(loginrec->tds_login, "DB-Library")) {
dbperror(NULL, SYBEMEM, errno);
tds_free_login(loginrec->tds_login);
free(loginrec);
return NULL;
}
return loginrec;
}
/**
* \ingroup dblib_core
* \brief free the \c LOGINREC
*
*/
void
dbloginfree(LOGINREC * login)
{
tdsdump_log(TDS_DBG_FUNC, "dbloginfree(%p)\n", login);
if (login) {
tds_free_login(login->tds_login);
free(login);
}
}
/** \internal
* \ingroup dblib_internal
* \brief Set the value of a string in a \c LOGINREC structure.
*
* Called by various macros to populate \a login.
* \param login the \c LOGINREC* to modify.
* \param value the value to set it to.
* \param which the field to set.
* \retval SUCCEED the value was set.
* \retval FAIL \c DBSETHID or other invalid \a which was tried.
*/
RETCODE
dbsetlname(LOGINREC * login, const char *value, int which)
{
bool copy_ret;
const char *value_nonull = value ? value : "";
tdsdump_log(TDS_DBG_FUNC, "dbsetlname(%p, %s, %d)\n", login, value, which);
if (login == NULL) {
dbperror(NULL, SYBEASNL, 0);
return FAIL;
}
if (TDS_MAX_LOGIN_STR_SZ < strlen(value_nonull)) {
dbperror(NULL, SYBENTLL, 0);
return FAIL;
}
switch (which) {
case DBSETHOST:
copy_ret = tds_set_host(login->tds_login, value_nonull);
break;
case DBSETUSER:
copy_ret = tds_set_user(login->tds_login, value_nonull);
break;
case DBSETPWD:
copy_ret = tds_set_passwd(login->tds_login, value_nonull);
break;
case DBSETAPP:
copy_ret = tds_set_app(login->tds_login, value_nonull);
break;
case DBSETCHARSET:
/* TODO NULL == no conversion desired */
copy_ret = tds_set_client_charset(login->tds_login, value_nonull);
break;
case DBSETNATLANG:
copy_ret = tds_set_language(login->tds_login, value_nonull);
break;
case DBSETDBNAME:
copy_ret = !!tds_dstr_copy(&login->tds_login->database, value_nonull);
break;
case DBSETSERVERPRINCIPAL:
copy_ret = !!tds_dstr_copy(&login->tds_login->server_spn, value_nonull);
break;
case DBSETENCRYPTION:
copy_ret = tds_parse_conf_section(TDS_STR_ENCRYPTION, value_nonull, login->tds_login);
break;
default:
dbperror(NULL, SYBEASUL, 0); /* Attempt to set unknown LOGINREC field */
return FAIL;
break;
}
if (!copy_ret)
return FAIL;
return SUCCEED;
}
/** \internal
* \ingroup dblib_internal
* \brief Set an integer value in a \c LOGINREC structure.
*
* Called by various macros to populate \a login.
* \param login the \c LOGINREC* to modify.
* \param value the value to set it to.
* \param which the field to set.
* \retval SUCCEED the value was set.
* \retval FAIL anything other than \c DBSETPACKET was passed for \a which.
*/
RETCODE
dbsetllong(LOGINREC * login, long value, int which)
{
tdsdump_log(TDS_DBG_FUNC, "dbsetllong(%p, %ld, %d)\n", login, value, which);
if( login == NULL ) {
dbperror(NULL, SYBEASNL, 0);
return FAIL;
}
switch (which) {
case DBSETPACKET:
if (0 <= value && value <= 999999) {
tds_set_packet(login->tds_login, (int) value);
return SUCCEED;
}
dbperror(0, SYBEBADPK, 0, (int) value, (int) login->tds_login->block_size);
return FAIL;
break;
default:
tdsdump_log(TDS_DBG_FUNC, "UNIMPLEMENTED dbsetllong() which = %d\n", which);
return FAIL;
break;
}
}
/** \internal
* \ingroup dblib_internal
* \brief Set an integer value in a \c LOGINREC structure.
*
* Called by various macros to populate \a login.
* \param login the \c LOGINREC* to modify.
* \param value the value to set it to.
* \param which the field to set.
* \retval SUCCEED the value was set.
* \retval FAIL if invalid field in \a which or invalid \a value.
*/
RETCODE
dbsetlshort(LOGINREC * login, int value, int which)
{
tdsdump_log(TDS_DBG_FUNC, "dbsetlshort(%p, %d, %d)\n", login, value, which);
if( login == NULL ) {
dbperror(NULL, SYBEASNL, 0);
return FAIL;
}
switch (which) {
case DBSETPORT:
tds_set_port(login->tds_login, value);
return SUCCEED;
/* case DBSETHIER: */
default:
tdsdump_log(TDS_DBG_FUNC, "UNIMPLEMENTED dbsetlshort() which = %d\n", which);
return FAIL;
break;
}
}
/** \internal
* \ingroup dblib_internal
* \brief Set a boolean value in a \c LOGINREC structure.
*
* Called by various macros to populate \a login.
* \param login the \c LOGINREC* to modify.
* \param value the value to set it to.
* \param which the field to set.
* \remark Only DBSETBCP is implemented.
* \retval SUCCEED the value was set.
* \retval FAIL invalid value passed for \a which.
* \todo DBSETNOSHORT, DBSETENCRYPT, DBSETLABELED
*/
RETCODE
dbsetlbool(LOGINREC * login, int value, int which)
{
bool b_value;
tdsdump_log(TDS_DBG_FUNC, "dbsetlbool(%p, %d, %d)\n", login, value, which);
if (login == NULL) {
dbperror(NULL, SYBEASNL, 0);
return FAIL;
}
b_value = (value != 0);
switch (which) {
case DBSETBCP:
tds_set_bulk(login->tds_login, b_value);
return SUCCEED;
case DBSETUTF16:
login->tds_login->use_utf16 = b_value;
return SUCCEED;
case DBSETNTLMV2:
login->tds_login->use_ntlmv2 = b_value;
login->tds_login->use_ntlmv2_specified = 1;
return SUCCEED;
case DBSETREADONLY:
login->tds_login->readonly_intent = b_value;
return SUCCEED;
case DBSETNETWORKAUTH:
login->network_auth = b_value;
return SUCCEED;
case DBSETMUTUALAUTH:
login->tds_login->mutual_authentication = b_value;
return SUCCEED;
case DBSETDELEGATION:
login->tds_login->gssapi_use_delegation = b_value;
return SUCCEED;
case DBSETENCRYPT:
case DBSETLABELED:
default:
tdsdump_log(TDS_DBG_FUNC, "UNIMPLEMENTED dbsetlbool() which = %d\n", which);
return FAIL;
break;
}
}
/**
* \ingroup dblib_core
* \brief Set TDS version for future connections
*
*/
RETCODE
dbsetlversion(LOGINREC * login, BYTE version)
{
tdsdump_log(TDS_DBG_FUNC, "dbsetlversion(%p, %x)\n", login, version);
if( login == NULL ) {
dbperror(NULL, SYBEASNL, 0);
return FAIL;
}
assert(login->tds_login != NULL);
switch (version) {
case DBVERSION_UNKNOWN:
tds_set_version(login->tds_login, 0, 0);
return SUCCEED;
case DBVERSION_42:
tds_set_version(login->tds_login, 4, 2);
return SUCCEED;
case DBVERSION_100:
tds_set_version(login->tds_login, 5, 0);
return SUCCEED;
case DBVERSION_70:
tds_set_version(login->tds_login, 7, 0);
return SUCCEED;
case DBVERSION_71:
tds_set_version(login->tds_login, 7, 1);
return SUCCEED;
case DBVERSION_72:
tds_set_version(login->tds_login, 7, 2);
return SUCCEED;
case DBVERSION_73:
tds_set_version(login->tds_login, 7, 3);
return SUCCEED;
case DBVERSION_74:
tds_set_version(login->tds_login, 7, 4);
return SUCCEED;
}
return FAIL;
}
static void
dbstring_free(DBSTRING ** dbstrp)
{
DBSTRING *curr, *next;