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db_ut.c
514 lines (437 loc) · 10.9 KB
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db_ut.c
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/*
* Copyright (C) 2001-2003 FhG Fokus
* Copyright (C) 2007-2008 1&1 Internet AG
*
* This file is part of Kamailio, a free SIP server.
*
* Kamailio 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
*
* Kamailio 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* \file lib/srdb1/db_ut.c
* \brief Utility functions for database drivers.
*
* This utility methods are used from the database SQL driver to convert
* values and print SQL queries from the internal API representation.
* \ingroup db1
*/
#if defined (__OS_darwin) || defined (__OS_freebsd)
#include "../../pvar.h"
#endif
/**
* make strptime available
* use 600 for 'Single UNIX Specification, Version 3'
* _XOPEN_SOURCE creates conflict in swab definition in Solaris
*/
#ifndef __OS_solaris
#define _XOPEN_SOURCE 600 /* glibc2 on linux, bsd */
#define _BSD_SOURCE 1 /* needed on linux to "fix" the effect
* of the above define on
* features.h/unistd.h syscall() */
#else
#define _XOPEN_SOURCE_EXTENDED 1 /* solaris */
#endif
#include <time.h>
#ifndef __OS_solaris
#undef _XOPEN_SOURCE
#undef _XOPEN_SOURCE_EXTENDED
#else
#undef _XOPEN_SOURCE_EXTENDED 1 /* solaris */
#endif
#include <limits.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "../../mem/mem.h"
#include "../../dprint.h"
#include "db_ut.h"
inline int db_str2int(const char* _s, int* _v)
{
long tmp;
char* p = NULL;
if (!_s || !_v) {
LM_ERR("Invalid parameter value\n");
return -1;
}
tmp = strtoul(_s, &p, 10);
if ((tmp == ULONG_MAX && errno == ERANGE) ||
(tmp < INT_MIN) || (tmp > UINT_MAX)) {
LM_ERR("Value out of range\n");
return -1;
}
if (p && *p != '\0') {
LM_ERR("Unexpected characters: [%s]\n", p);
return -2;
}
*_v = (int)tmp;
return 0;
}
inline int db_str2longlong(const char* _s, long long * _v)
{
long long tmp;
char* p = NULL;
if (!_s || !_v) {
LM_ERR("Invalid parameter value\n");
return -1;
}
tmp = strtoll(_s, &p, 10);
if (errno == ERANGE) {
LM_ERR("Value out of range\n");
return -1;
}
if (p && *p != '\0') {
LM_ERR("Unexpected characters: [%s]\n", p);
return -2;
}
*_v = tmp;
return 0;
}
/*
* Convert a string to double
*/
inline int db_str2double(const char* _s, double* _v)
{
if ((!_s) || (!_v)) {
LM_ERR("Invalid parameter value\n");
return -1;
}
*_v = atof(_s);
return 0;
}
/*
* Convert an integer to string
*/
inline int db_int2str(int _v, char* _s, int* _l)
{
int ret;
if ((!_s) || (!_l) || (!*_l)) {
LM_ERR("Invalid parameter value\n");
return -1;
}
ret = snprintf(_s, *_l, "%-d", _v);
if (ret < 0 || ret >= *_l) {
LM_ERR("Error in snprintf\n");
return -1;
}
*_l = ret;
return 0;
}
/*
* Convert an long long to string
*/
inline int db_longlong2str(long long _v, char* _s, int* _l)
{
int ret;
if ((!_s) || (!_l) || (!*_l)) {
LM_ERR("Invalid parameter value\n");
return -1;
}
ret = snprintf(_s, *_l, "%-lld", _v);
if (ret < 0 || ret >= *_l) {
LM_ERR("Error in snprintf\n");
return -1;
}
*_l = ret;
return 0;
}
/*
* Convert a double to string
*/
inline int db_double2str(double _v, char* _s, int* _l)
{
int ret;
if ((!_s) || (!_l) || (!*_l)) {
LM_ERR("Invalid parameter value\n");
return -1;
}
ret = snprintf(_s, *_l, "%-10.6f", _v);
if (ret < 0 || ret >= *_l) {
LM_ERR("Error in snprintf\n");
return -1;
}
*_l = ret;
return 0;
}
/*
* Convert a string to time_t
*/
inline int db_str2time(const char* _s, time_t* _v)
{
struct tm time;
if ((!_s) || (!_v)) {
LM_ERR("Invalid parameter value\n");
return -1;
}
/* Convert database time representation to time_t structure
* It is necessary to zero tm structure first */
memset(&time, '\0', sizeof(struct tm));
if (strptime(_s, "%Y-%m-%d %H:%M:%S", &time) == NULL) {
LM_ERR("Error during time conversion\n");
return -1;
}
/* Daylight saving information got lost in the database
* so let mktime to guess it. This eliminates the bug when
* contacts reloaded from the database have different time
* of expiration by one hour when daylight saving is used
*/
time.tm_isdst = -1;
*_v = mktime(&time);
return 0;
}
/**
*
*/
inline int db_time2str_ex(time_t _v, char* _s, int* _l, int _qmode)
{
struct tm* t;
int l;
if ((!_s) || (!_l) || (*_l < 2)) {
LM_ERR("Invalid parameter value\n");
return -1;
}
if(_qmode) *_s++ = '\'';
/* Convert time_t structure to format accepted by the database */
t = localtime(&_v);
l = strftime(_s, *_l -1, "%Y-%m-%d %H:%M:%S", t);
if (l == 0) {
LM_ERR("Error during time conversion\n");
/* the value of _s is now unspecified */
_s = NULL;
_l = 0;
return -1;
}
*_l = l;
if(_qmode) *(_s + l) = '\'';
*_l = l + 2;
return 0;
}
/**
*
*/
inline int db_time2str(time_t _v, char* _s, int* _l)
{
return db_time2str_ex(_v, _s, _l, 1);
}
/*
* Print list of columns separated by comma
*/
int db_print_columns(char* _b, const int _l, const db_key_t* _c, const int _n, const char *_tq)
{
int i, ret, len = 0;
if ((!_c) || (!_n) || (!_b) || (!_l)) {
LM_ERR("Invalid parameter value\n");
return -1;
}
for(i = 0; i < _n; i++) {
if (i == (_n - 1)) {
ret = snprintf(_b + len, _l - len, "%s%.*s%s ", _tq, _c[i]->len, _c[i]->s, _tq);
if (ret < 0 || ret >= (_l - len)) goto error;
len += ret;
} else {
ret = snprintf(_b + len, _l - len, "%s%.*s%s,", _tq, _c[i]->len, _c[i]->s, _tq);
if (ret < 0 || ret >= (_l - len)) goto error;
len += ret;
}
}
return len;
error:
LM_ERR("Error in snprintf\n");
return -1;
}
/*
* Print values of SQL statement
*/
int db_print_values(const db1_con_t* _c, char* _b, const int _l, const db_val_t* _v,
const int _n, int (*val2str)(const db1_con_t*, const db_val_t*, char*, int*))
{
int i, l, len = 0;
if (!_c || !_b || !_l || !_v || !_n) {
LM_ERR("Invalid parameter value\n");
return -1;
}
for(i = 0; i < _n; i++) {
l = _l - len;
if ( (*val2str)(_c, _v + i, _b + len, &l) < 0) {
LM_ERR("Error while converting value to string\n");
return -1;
}
len += l;
if (i != (_n - 1)) {
*(_b + len) = ',';
len++;
}
}
return len;
}
/*
* Print where clause of SQL statement
*/
int db_print_where(const db1_con_t* _c, char* _b, const int _l, const db_key_t* _k,
const db_op_t* _o, const db_val_t* _v, const int _n, int (*val2str)
(const db1_con_t*, const db_val_t*, char*, int*))
{
int i, l, ret, len = 0;
if (!_c || !_b || !_l || !_k || !_v || !_n) {
LM_ERR("Invalid parameter value\n");
return -1;
}
for(i = 0; i < _n; i++) {
if (_o && strncmp(_o[i], OP_BITWISE_AND, 1) == 0) {
char tmp_buf[16];
int tmp_len = 15;
memset(tmp_buf, '0', 16);
if ((*val2str)(_c, &(_v[i]), tmp_buf, &tmp_len) < 0) {
LM_ERR("Error while converting value to string\n");
return -1;
}
ret = snprintf(_b + len, _l - len, "%s%.*s%s&%.*s=%.*s", CON_TQUOTESZ(_c),
_k[i]->len, _k[i]->s, CON_TQUOTESZ(_c), tmp_len, tmp_buf, tmp_len, tmp_buf);
if (ret < 0 || ret >= (_l - len)) goto error;
len += ret;
} else {
if (_o) {
ret = snprintf(_b + len, _l - len, "%s%.*s%s%s", CON_TQUOTESZ(_c),
_k[i]->len, _k[i]->s, CON_TQUOTESZ(_c), _o[i]);
if (ret < 0 || ret >= (_l - len)) goto error;
len += ret;
} else {
ret = snprintf(_b + len, _l - len, "%s%.*s%s=", CON_TQUOTESZ(_c),
_k[i]->len, _k[i]->s, CON_TQUOTESZ(_c));
if (ret < 0 || ret >= (_l - len)) goto error;
len += ret;
}
l = _l - len;
if ( (*val2str)(_c, &(_v[i]), _b + len, &l) < 0) {
LM_ERR("Error while converting value to string\n");
return -1;
}
len += l;
}
if (i != (_n - 1)) {
ret = snprintf(_b + len, _l - len, " AND ");
if (ret < 0 || ret >= (_l - len)) goto error;
len += ret;
}
}
return len;
error:
LM_ERR("Error in snprintf\n");
return -1;
}
/*
* Print set clause of update SQL statement
*/
int db_print_set(const db1_con_t* _c, char* _b, const int _l, const db_key_t* _k,
const db_val_t* _v, const int _n, int (*val2str)(const db1_con_t*,
const db_val_t*,char*, int*))
{
int i, l, ret, len = 0;
if (!_c || !_b || !_l || !_k || !_v || !_n) {
LM_ERR("Invalid parameter value\n");
return -1;
}
for(i = 0; i < _n; i++) {
ret = snprintf(_b + len, _l - len, "%s%.*s%s=",
CON_TQUOTESZ(_c), _k[i]->len, _k[i]->s, CON_TQUOTESZ(_c));
if (ret < 0 || ret >= (_l - len)) goto error;
len += ret;
l = _l - len;
if ( (*val2str)(_c, &(_v[i]), _b + len, &l) < 0) {
LM_ERR("Error while converting value to string\n");
return -1;
}
len += l;
if (i != (_n - 1)) {
if ((_l - len) >= 1) {
*(_b + len++) = ',';
}
}
}
return len;
error:
LM_ERR("Error in snprintf\n");
return -1;
}
/*
* Convert db_val to pv_spec
*/
int db_val2pv_spec(struct sip_msg* msg, db_val_t *dbval, pv_spec_t *pvs)
{
pv_value_t pv;
#define LL_LEN 21 /* sign, 19 digits and \0 */
static char ll_buf[LL_LEN];
if(dbval->nul)
{
pv.flags = PV_VAL_NULL;
} else
{
switch(dbval->type)
{
case DB1_STRING:
pv.flags = PV_VAL_STR;
pv.rs.s = (char*)dbval->val.string_val;
pv.rs.len = strlen(pv.rs.s);
break;
case DB1_STR:
pv.flags = PV_VAL_STR;
pv.rs.s = (char*)dbval->val.str_val.s;
pv.rs.len = dbval->val.str_val.len;
break;
case DB1_BLOB:
pv.flags = PV_VAL_STR;
pv.rs.s = (char*)dbval->val.blob_val.s;
pv.rs.len = dbval->val.blob_val.len;
break;
case DB1_INT:
pv.flags = PV_VAL_INT | PV_TYPE_INT;
pv.ri = (int)dbval->val.int_val;
break;
case DB1_DATETIME:
pv.flags = PV_VAL_INT | PV_TYPE_INT;
pv.ri = (int)dbval->val.time_val;
break;
case DB1_BITMAP:
pv.flags = PV_VAL_INT | PV_TYPE_INT;
pv.ri = (int)dbval->val.bitmap_val;
break;
case DB1_BIGINT:
/* BIGINT is stored as string */
pv.flags = PV_VAL_STR;
pv.rs.len = LL_LEN;
db_longlong2str(dbval->val.ll_val, ll_buf, &pv.rs.len);
pv.rs.s = ll_buf;
/* if it fits, also store as 32 bit integer*/
if (! ((unsigned long long)dbval->val.ll_val & 0xffffffff00000000ULL)) {
pv.flags |= PV_VAL_INT | PV_TYPE_INT;
pv.ri = (int)dbval->val.ll_val;
}
break;
default:
LM_NOTICE("unknown field type: %d, setting value to null\n",
dbval->type);
pv.flags = PV_VAL_NULL;
}
}
/* null values are ignored for avp type PV */
if (pv.flags == PV_VAL_NULL && pvs->type == PVT_AVP)
return 0;
/* add value to result pv */
if (pv_set_spec_value(msg, pvs, 0, &pv) != 0)
{
LM_ERR("Failed to add value to spec\n");
return -1;
}
return 0;
}