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asterisk/res/res_config_odbc.c

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/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 1999 - 2010, Digium, Inc.
*
* Mark Spencer <markster@digium.com>
*
* Copyright (C) 2004 - 2005 Anthony Minessale II <anthmct@yahoo.com>
*
* See http://www.asterisk.org for more information about
* the Asterisk project. Please do not directly contact
* any of the maintainers of this project for assistance;
* the project provides a web site, mailing lists and IRC
* channels for your use.
*
* This program is free software, distributed under the terms of
* the GNU General Public License Version 2. See the LICENSE file
* at the top of the source tree.
*/
/*! \file
*
* \brief odbc+odbc plugin for portable configuration engine
*
* \author Mark Spencer <markster@digium.com>
* \author Anthony Minessale II <anthmct@yahoo.com>
*
* \arg http://www.unixodbc.org
*/
/*** MODULEINFO
<depend>res_odbc</depend>
<support_level>core</support_level>
***/
#include "asterisk.h"
ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
#include "asterisk/file.h"
#include "asterisk/channel.h"
#include "asterisk/pbx.h"
#include "asterisk/config.h"
#include "asterisk/module.h"
#include "asterisk/lock.h"
#include "asterisk/res_odbc.h"
#include "asterisk/utils.h"
#include "asterisk/stringfields.h"
AST_THREADSTORAGE(sql_buf);
struct custom_prepare_struct {
const char *sql;
const char *extra;
AST_DECLARE_STRING_FIELDS(
AST_STRING_FIELD(encoding)[256];
);
va_list ap;
unsigned long long skip;
};
static void decode_chunk(char *chunk)
{
for (; *chunk; chunk++) {
if (*chunk == '^' && strchr("0123456789ABCDEF", chunk[1]) && strchr("0123456789ABCDEF", chunk[2])) {
sscanf(chunk + 1, "%02hhX", chunk);
memmove(chunk + 1, chunk + 3, strlen(chunk + 3) + 1);
}
}
}
static SQLHSTMT custom_prepare(struct odbc_obj *obj, void *data)
{
int res, x = 1, count = 0;
struct custom_prepare_struct *cps = data;
const char *newparam, *newval;
char encodebuf[1024];
SQLHSTMT stmt;
va_list ap;
va_copy(ap, cps->ap);
res = SQLAllocHandle(SQL_HANDLE_STMT, obj->con, &stmt);
if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
ast_log(LOG_WARNING, "SQL Alloc Handle failed!\n");
return NULL;
}
ast_debug(1, "Skip: %lld; SQL: %s\n", cps->skip, cps->sql);
res = SQLPrepare(stmt, (unsigned char *)cps->sql, SQL_NTS);
if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
ast_log(LOG_WARNING, "SQL Prepare failed![%s]\n", cps->sql);
SQLFreeHandle (SQL_HANDLE_STMT, stmt);
return NULL;
}
while ((newparam = va_arg(ap, const char *))) {
newval = va_arg(ap, const char *);
if ((1LL << count++) & cps->skip) {
ast_debug(1, "Skipping field '%s'='%s' (%llo/%llo)\n", newparam, newval, 1LL << (count - 1), cps->skip);
continue;
}
ast_debug(1, "Parameter %d ('%s') = '%s'\n", x, newparam, newval);
if (strchr(newval, ';') || strchr(newval, '^')) {
char *eptr = encodebuf;
const char *vptr = newval;
for (; *vptr && eptr < encodebuf + sizeof(encodebuf); vptr++) {
if (strchr("^;", *vptr)) {
/* We use ^XX, instead of %XX because '%' is a special character in SQL */
snprintf(eptr, encodebuf + sizeof(encodebuf) - eptr, "^%02hhX", *vptr);
eptr += 3;
} else {
*eptr++ = *vptr;
}
}
if (eptr < encodebuf + sizeof(encodebuf)) {
*eptr = '\0';
} else {
encodebuf[sizeof(encodebuf) - 1] = '\0';
}
ast_string_field_set(cps, encoding[x], encodebuf);
newval = cps->encoding[x];
}
SQLBindParameter(stmt, x++, SQL_PARAM_INPUT, SQL_C_CHAR, SQL_CHAR, strlen(newval), 0, (void *)newval, 0, NULL);
}
va_end(ap);
if (!ast_strlen_zero(cps->extra))
SQLBindParameter(stmt, x++, SQL_PARAM_INPUT, SQL_C_CHAR, SQL_CHAR, strlen(cps->extra), 0, (void *)cps->extra, 0, NULL);
return stmt;
}
/*!
* \brief Excute an SQL query and return ast_variable list
* \param database
* \param table
* \param ap list containing one or more field/operator/value set.
*
* Select database and preform query on table, prepare the sql statement
* Sub-in the values to the prepared statement and execute it. Return results
* as a ast_variable list.
*
* \retval var on success
* \retval NULL on failure
*/
static struct ast_variable *realtime_odbc(const char *database, const char *table, va_list ap)
{
struct odbc_obj *obj;
SQLHSTMT stmt;
char sql[1024];
char coltitle[256];
char rowdata[2048];
char *op;
const char *newparam;
char *stringp;
char *chunk;
SQLSMALLINT collen;
int res;
int x;
struct ast_variable *var=NULL, *prev=NULL;
SQLULEN colsize;
SQLSMALLINT colcount=0;
SQLSMALLINT datatype;
SQLSMALLINT decimaldigits;
SQLSMALLINT nullable;
SQLLEN indicator;
va_list aq;
struct custom_prepare_struct cps = { .sql = sql };
struct ast_flags connected_flag = { RES_ODBC_CONNECTED };
if (ast_string_field_init(&cps, 256)) {
return NULL;
}
va_copy(cps.ap, ap);
va_copy(aq, ap);
if (!table) {
ast_string_field_free_memory(&cps);
return NULL;
}
obj = ast_odbc_request_obj2(database, connected_flag);
if (!obj) {
ast_log(LOG_ERROR, "No database handle available with the name of '%s' (check res_odbc.conf)\n", database);
ast_string_field_free_memory(&cps);
return NULL;
}
newparam = va_arg(aq, const char *);
if (!newparam) {
ast_odbc_release_obj(obj);
ast_string_field_free_memory(&cps);
return NULL;
}
va_arg(aq, const char *);
op = !strchr(newparam, ' ') ? " =" : "";
snprintf(sql, sizeof(sql), "SELECT * FROM %s WHERE %s%s ?%s", table, newparam, op,
strcasestr(newparam, "LIKE") && !ast_odbc_backslash_is_escape(obj) ? " ESCAPE '\\'" : "");
while((newparam = va_arg(aq, const char *))) {
op = !strchr(newparam, ' ') ? " =" : "";
snprintf(sql + strlen(sql), sizeof(sql) - strlen(sql), " AND %s%s ?%s", newparam, op,
strcasestr(newparam, "LIKE") && !ast_odbc_backslash_is_escape(obj) ? " ESCAPE '\\'" : "");
va_arg(aq, const char *);
}
va_end(aq);
stmt = ast_odbc_prepare_and_execute(obj, custom_prepare, &cps);
if (!stmt) {
ast_odbc_release_obj(obj);
ast_string_field_free_memory(&cps);
return NULL;
}
res = SQLNumResultCols(stmt, &colcount);
if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
ast_log(LOG_WARNING, "SQL Column Count error!\n[%s]\n\n", sql);
SQLFreeHandle (SQL_HANDLE_STMT, stmt);
ast_odbc_release_obj(obj);
ast_string_field_free_memory(&cps);
return NULL;
}
res = SQLFetch(stmt);
if (res == SQL_NO_DATA) {
SQLFreeHandle (SQL_HANDLE_STMT, stmt);
ast_odbc_release_obj(obj);
ast_string_field_free_memory(&cps);
return NULL;
}
if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
ast_log(LOG_WARNING, "SQL Fetch error!\n[%s]\n\n", sql);
SQLFreeHandle (SQL_HANDLE_STMT, stmt);
ast_odbc_release_obj(obj);
ast_string_field_free_memory(&cps);
return NULL;
}
for (x = 0; x < colcount; x++) {
rowdata[0] = '\0';
colsize = 0;
collen = sizeof(coltitle);
res = SQLDescribeCol(stmt, x + 1, (unsigned char *)coltitle, sizeof(coltitle), &collen,
&datatype, &colsize, &decimaldigits, &nullable);
if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
ast_log(LOG_WARNING, "SQL Describe Column error!\n[%s]\n\n", sql);
if (var)
ast_variables_destroy(var);
ast_odbc_release_obj(obj);
ast_string_field_free_memory(&cps);
return NULL;
}
indicator = 0;
res = SQLGetData(stmt, x + 1, SQL_CHAR, rowdata, sizeof(rowdata), &indicator);
if (indicator == SQL_NULL_DATA)
rowdata[0] = '\0';
else if (ast_strlen_zero(rowdata)) {
/* Because we encode the empty string for a NULL, we will encode
* actual empty strings as a string containing a single whitespace. */
ast_copy_string(rowdata, " ", sizeof(rowdata));
}
if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
ast_log(LOG_WARNING, "SQL Get Data error!\n[%s]\n\n", sql);
if (var)
ast_variables_destroy(var);
ast_odbc_release_obj(obj);
return NULL;
}
stringp = rowdata;
while (stringp) {
chunk = strsep(&stringp, ";");
if (!ast_strlen_zero(ast_strip(chunk))) {
if (strchr(chunk, '^')) {
decode_chunk(chunk);
}
if (prev) {
prev->next = ast_variable_new(coltitle, chunk, "");
if (prev->next) {
prev = prev->next;
}
} else {
prev = var = ast_variable_new(coltitle, chunk, "");
}
}
}
}
SQLFreeHandle(SQL_HANDLE_STMT, stmt);
ast_odbc_release_obj(obj);
ast_string_field_free_memory(&cps);
return var;
}
/*!
* \brief Excute an Select query and return ast_config list
* \param database
* \param table
* \param ap list containing one or more field/operator/value set.
*
* Select database and preform query on table, prepare the sql statement
* Sub-in the values to the prepared statement and execute it.
* Execute this prepared query against several ODBC connected databases.
* Return results as an ast_config variable.
*
* \retval var on success
* \retval NULL on failure
*/
static struct ast_config *realtime_multi_odbc(const char *database, const char *table, va_list ap)
{
struct odbc_obj *obj;
SQLHSTMT stmt;
char sql[1024];
char coltitle[256];
char rowdata[2048];
const char *initfield=NULL;
char *op;
const char *newparam;
char *stringp;
char *chunk;
SQLSMALLINT collen;
int res;
int x;
struct ast_variable *var=NULL;
struct ast_config *cfg=NULL;
struct ast_category *cat=NULL;
struct ast_flags connected_flag = { RES_ODBC_CONNECTED };
SQLULEN colsize;
SQLSMALLINT colcount=0;
SQLSMALLINT datatype;
SQLSMALLINT decimaldigits;
SQLSMALLINT nullable;
SQLLEN indicator;
struct custom_prepare_struct cps = { .sql = sql };
va_list aq;
if (!table || ast_string_field_init(&cps, 256)) {
return NULL;
}
va_copy(cps.ap, ap);
va_copy(aq, ap);
obj = ast_odbc_request_obj2(database, connected_flag);
if (!obj) {
ast_string_field_free_memory(&cps);
return NULL;
}
newparam = va_arg(aq, const char *);
if (!newparam) {
ast_odbc_release_obj(obj);
ast_string_field_free_memory(&cps);
return NULL;
}
initfield = ast_strdupa(newparam);
if ((op = strchr(initfield, ' ')))
*op = '\0';
va_arg(aq, const char *);
op = !strchr(newparam, ' ') ? " =" : "";
snprintf(sql, sizeof(sql), "SELECT * FROM %s WHERE %s%s ?%s", table, newparam, op,
strcasestr(newparam, "LIKE") && !ast_odbc_backslash_is_escape(obj) ? " ESCAPE '\\'" : "");
while((newparam = va_arg(aq, const char *))) {
op = !strchr(newparam, ' ') ? " =" : "";
snprintf(sql + strlen(sql), sizeof(sql) - strlen(sql), " AND %s%s ?%s", newparam, op,
strcasestr(newparam, "LIKE") && !ast_odbc_backslash_is_escape(obj) ? " ESCAPE '\\'" : "");
va_arg(aq, const char *);
}
if (initfield)
snprintf(sql + strlen(sql), sizeof(sql) - strlen(sql), " ORDER BY %s", initfield);
va_end(aq);
stmt = ast_odbc_prepare_and_execute(obj, custom_prepare, &cps);
if (!stmt) {
ast_odbc_release_obj(obj);
ast_string_field_free_memory(&cps);
return NULL;
}
res = SQLNumResultCols(stmt, &colcount);
if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
ast_log(LOG_WARNING, "SQL Column Count error!\n[%s]\n\n", sql);
SQLFreeHandle(SQL_HANDLE_STMT, stmt);
ast_odbc_release_obj(obj);
ast_string_field_free_memory(&cps);
return NULL;
}
cfg = ast_config_new();
if (!cfg) {
ast_log(LOG_WARNING, "Out of memory!\n");
SQLFreeHandle(SQL_HANDLE_STMT, stmt);
ast_odbc_release_obj(obj);
ast_string_field_free_memory(&cps);
return NULL;
}
while ((res=SQLFetch(stmt)) != SQL_NO_DATA) {
var = NULL;
if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
ast_log(LOG_WARNING, "SQL Fetch error!\n[%s]\n\n", sql);
continue;
}
cat = ast_category_new("","",99999);
if (!cat) {
ast_log(LOG_WARNING, "Out of memory!\n");
continue;
}
for (x=0;x<colcount;x++) {
rowdata[0] = '\0';
colsize = 0;
collen = sizeof(coltitle);
res = SQLDescribeCol(stmt, x + 1, (unsigned char *)coltitle, sizeof(coltitle), &collen,
&datatype, &colsize, &decimaldigits, &nullable);
if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
ast_log(LOG_WARNING, "SQL Describe Column error!\n[%s]\n\n", sql);
ast_category_destroy(cat);
continue;
}
indicator = 0;
res = SQLGetData(stmt, x + 1, SQL_CHAR, rowdata, sizeof(rowdata), &indicator);
if (indicator == SQL_NULL_DATA)
continue;
if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
ast_log(LOG_WARNING, "SQL Get Data error!\n[%s]\n\n", sql);
ast_category_destroy(cat);
continue;
}
stringp = rowdata;
while (stringp) {
chunk = strsep(&stringp, ";");
if (!ast_strlen_zero(ast_strip(chunk))) {
if (strchr(chunk, '^')) {
decode_chunk(chunk);
}
if (initfield && !strcmp(initfield, coltitle)) {
ast_category_rename(cat, chunk);
}
var = ast_variable_new(coltitle, chunk, "");
ast_variable_append(cat, var);
}
}
}
ast_category_append(cfg, cat);
}
SQLFreeHandle(SQL_HANDLE_STMT, stmt);
ast_odbc_release_obj(obj);
ast_string_field_free_memory(&cps);
return cfg;
}
/*!
* \brief Excute an UPDATE query
* \param database
* \param table
* \param keyfield where clause field
* \param lookup value of field for where clause
* \param ap list containing one or more field/value set(s).
*
* Update a database table, prepare the sql statement using keyfield and lookup
* control the number of records to change. All values to be changed are stored in ap list.
* Sub-in the values to the prepared statement and execute it.
*
* \retval number of rows affected
* \retval -1 on failure
*/
static int update_odbc(const char *database, const char *table, const char *keyfield, const char *lookup, va_list ap)
{
struct odbc_obj *obj;
SQLHSTMT stmt;
char sql[256];
SQLLEN rowcount=0;
const char *newparam;
int res, count = 1;
va_list aq;
struct custom_prepare_struct cps = { .sql = sql, .extra = lookup };
struct odbc_cache_tables *tableptr;
struct odbc_cache_columns *column = NULL;
struct ast_flags connected_flag = { RES_ODBC_CONNECTED };
if (!table) {
return -1;
}
va_copy(cps.ap, ap);
va_copy(aq, ap);
if (ast_string_field_init(&cps, 256)) {
return -1;
}
tableptr = ast_odbc_find_table(database, table);
if (!(obj = ast_odbc_request_obj2(database, connected_flag))) {
ast_odbc_release_table(tableptr);
ast_string_field_free_memory(&cps);
return -1;
}
newparam = va_arg(aq, const char *);
if (!newparam) {
ast_odbc_release_obj(obj);
ast_odbc_release_table(tableptr);
ast_string_field_free_memory(&cps);
return -1;
}
va_arg(aq, const char *);
if (tableptr && !(column = ast_odbc_find_column(tableptr, newparam))) {
ast_log(LOG_WARNING, "Key field '%s' does not exist in table '%s@%s'. Update will fail\n", newparam, table, database);
}
snprintf(sql, sizeof(sql), "UPDATE %s SET %s=?", table, newparam);
while((newparam = va_arg(aq, const char *))) {
va_arg(aq, const char *);
if ((tableptr && (column = ast_odbc_find_column(tableptr, newparam))) || count > 63) {
/* NULL test for integer-based columns */
if (ast_strlen_zero(newparam) && tableptr && column && column->nullable && count < 64 &&
(column->type == SQL_INTEGER || column->type == SQL_BIGINT ||
column->type == SQL_SMALLINT || column->type == SQL_TINYINT ||
column->type == SQL_NUMERIC || column->type == SQL_DECIMAL)) {
snprintf(sql + strlen(sql), sizeof(sql) - strlen(sql), ", %s=NULL", newparam);
cps.skip |= (1LL << count);
} else {
snprintf(sql + strlen(sql), sizeof(sql) - strlen(sql), ", %s=?", newparam);
}
} else { /* the column does not exist in the table */
cps.skip |= (1LL << count);
}
count++;
}
va_end(aq);
snprintf(sql + strlen(sql), sizeof(sql) - strlen(sql), " WHERE %s=?", keyfield);
ast_odbc_release_table(tableptr);
stmt = ast_odbc_prepare_and_execute(obj, custom_prepare, &cps);
if (!stmt) {
ast_odbc_release_obj(obj);
ast_string_field_free_memory(&cps);
return -1;
}
res = SQLRowCount(stmt, &rowcount);
SQLFreeHandle (SQL_HANDLE_STMT, stmt);
ast_odbc_release_obj(obj);
ast_string_field_free_memory(&cps);
if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
ast_log(LOG_WARNING, "SQL Row Count error!\n[%s]\n\n", sql);
return -1;
}
if (rowcount >= 0) {
return (int) rowcount;
}
return -1;
}
struct update2_prepare_struct {
const char *database;
const char *table;
va_list ap;
};
static SQLHSTMT update2_prepare(struct odbc_obj *obj, void *data)
{
int res, x = 1, first = 1;
struct update2_prepare_struct *ups = data;
const char *newparam, *newval;
struct ast_str *sql = ast_str_thread_get(&sql_buf, 16);
SQLHSTMT stmt;
va_list ap;
struct odbc_cache_tables *tableptr = ast_odbc_find_table(ups->database, ups->table);
struct odbc_cache_columns *column;
if (!sql) {
if (tableptr) {
ast_odbc_release_table(tableptr);
}
return NULL;
}
if (!tableptr) {
ast_log(LOG_ERROR, "Could not retrieve metadata for table '%s@%s'. Update will fail!\n", ups->table, ups->database);
return NULL;
}
res = SQLAllocHandle(SQL_HANDLE_STMT, obj->con, &stmt);
if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
ast_log(LOG_WARNING, "SQL Alloc Handle failed!\n");
ast_odbc_release_table(tableptr);
return NULL;
}
ast_str_set(&sql, 0, "UPDATE %s SET ", ups->table);
/* Start by finding the second set of parameters */
va_copy(ap, ups->ap);
while ((newparam = va_arg(ap, const char *))) {
newval = va_arg(ap, const char *);
}
while ((newparam = va_arg(ap, const char *))) {
newval = va_arg(ap, const char *);
if ((column = ast_odbc_find_column(tableptr, newparam))) {
ast_str_append(&sql, 0, "%s%s=? ", first ? "" : ", ", newparam);
SQLBindParameter(stmt, x++, SQL_PARAM_INPUT, SQL_C_CHAR, SQL_CHAR, strlen(newval), 0, (void *)newval, 0, NULL);
first = 0;
} else {
ast_log(LOG_NOTICE, "Not updating column '%s' in '%s@%s' because that column does not exist!\n", newparam, ups->table, ups->database);
}
}
va_end(ap);
/* Restart search, because we need to add the search parameters */
va_copy(ap, ups->ap);
ast_str_append(&sql, 0, "WHERE");
first = 1;
while ((newparam = va_arg(ap, const char *))) {
newval = va_arg(ap, const char *);
if (!(column = ast_odbc_find_column(tableptr, newparam))) {
ast_log(LOG_ERROR, "One or more of the criteria columns '%s' on '%s@%s' for this update does not exist!\n", newparam, ups->table, ups->database);
ast_odbc_release_table(tableptr);
SQLFreeHandle(SQL_HANDLE_STMT, stmt);
return NULL;
}
ast_str_append(&sql, 0, "%s %s=?", first ? "" : " AND", newparam);
SQLBindParameter(stmt, x++, SQL_PARAM_INPUT, SQL_C_CHAR, SQL_CHAR, strlen(newval), 0, (void *)newval, 0, NULL);
first = 0;
}
va_end(ap);
/* Done with the table metadata */
ast_odbc_release_table(tableptr);
res = SQLPrepare(stmt, (unsigned char *)ast_str_buffer(sql), SQL_NTS);
if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
ast_log(LOG_WARNING, "SQL Prepare failed![%s]\n", ast_str_buffer(sql));
SQLFreeHandle(SQL_HANDLE_STMT, stmt);
return NULL;
}
return stmt;
}
/*!
* \brief Execute an UPDATE query
* \param database
* \param table
* \param ap list containing one or more field/value set(s).
*
* Update a database table, preparing the sql statement from a list of
* key/value pairs specified in ap. The lookup pairs are specified first
* and are separated from the update pairs by a sentinel value.
* Sub-in the values to the prepared statement and execute it.
*
* \retval number of rows affected
* \retval -1 on failure
*/
static int update2_odbc(const char *database, const char *table, va_list ap)
{
struct odbc_obj *obj;
SQLHSTMT stmt;
struct update2_prepare_struct ups = { .database = database, .table = table, };
struct ast_str *sql;
int res;
SQLLEN rowcount = 0;
va_copy(ups.ap, ap);
if (!(obj = ast_odbc_request_obj(database, 0))) {
return -1;
}
if (!(stmt = ast_odbc_prepare_and_execute(obj, update2_prepare, &ups))) {
ast_odbc_release_obj(obj);
return -1;
}
res = SQLRowCount(stmt, &rowcount);
SQLFreeHandle(SQL_HANDLE_STMT, stmt);
ast_odbc_release_obj(obj);
if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
/* Since only a single thread can access this memory, we can retrieve what would otherwise be lost. */
sql = ast_str_thread_get(&sql_buf, 16);
ast_log(LOG_WARNING, "SQL Row Count error!\n[%s]\n", ast_str_buffer(sql));
return -1;
}
if (rowcount >= 0) {
return (int)rowcount;
}
return -1;
}
/*!
* \brief Excute an INSERT query
* \param database
* \param table
* \param ap list containing one or more field/value set(s)
*
* Insert a new record into database table, prepare the sql statement.
* All values to be changed are stored in ap list.
* Sub-in the values to the prepared statement and execute it.
*
* \retval number of rows affected
* \retval -1 on failure
*/
static int store_odbc(const char *database, const char *table, va_list ap)
{
struct odbc_obj *obj;
SQLHSTMT stmt;
char sql[256];
char keys[256];
char vals[256];
SQLLEN rowcount=0;
const char *newparam;
int res;
va_list aq;
struct custom_prepare_struct cps = { .sql = sql, .extra = NULL };
struct ast_flags connected_flag = { RES_ODBC_CONNECTED };
va_copy(cps.ap, ap);
va_copy(aq, ap);
if (!table)
return -1;
obj = ast_odbc_request_obj2(database, connected_flag);
if (!obj)
return -1;
newparam = va_arg(aq, const char *);
if (!newparam) {
ast_odbc_release_obj(obj);
return -1;
}
va_arg(aq, const char *);
snprintf(keys, sizeof(keys), "%s", newparam);
ast_copy_string(vals, "?", sizeof(vals));
while ((newparam = va_arg(aq, const char *))) {
snprintf(keys + strlen(keys), sizeof(keys) - strlen(keys), ", %s", newparam);
snprintf(vals + strlen(vals), sizeof(vals) - strlen(vals), ", ?");
va_arg(aq, const char *);
}
va_end(aq);
snprintf(sql, sizeof(sql), "INSERT INTO %s (%s) VALUES (%s)", table, keys, vals);
stmt = ast_odbc_prepare_and_execute(obj, custom_prepare, &cps);
if (!stmt) {
ast_odbc_release_obj(obj);
return -1;
}
res = SQLRowCount(stmt, &rowcount);
SQLFreeHandle (SQL_HANDLE_STMT, stmt);
ast_odbc_release_obj(obj);
if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
ast_log(LOG_WARNING, "SQL Row Count error!\n[%s]\n\n", sql);
return -1;
}
if (rowcount >= 0)
return (int)rowcount;
return -1;
}
/*!
* \brief Excute an DELETE query
* \param database
* \param table
* \param keyfield where clause field
* \param lookup value of field for where clause
* \param ap list containing one or more field/value set(s)
*
* Delete a row from a database table, prepare the sql statement using keyfield and lookup
* control the number of records to change. Additional params to match rows are stored in ap list.
* Sub-in the values to the prepared statement and execute it.
*
* \retval number of rows affected
* \retval -1 on failure
*/
static int destroy_odbc(const char *database, const char *table, const char *keyfield, const char *lookup, va_list ap)
{
struct odbc_obj *obj;
SQLHSTMT stmt;
char sql[256];
SQLLEN rowcount=0;
const char *newparam;
int res;
va_list aq;
struct custom_prepare_struct cps = { .sql = sql, .extra = lookup };
struct ast_flags connected_flag = { RES_ODBC_CONNECTED };
va_copy(cps.ap, ap);
va_copy(aq, ap);
if (!table)
return -1;
obj = ast_odbc_request_obj2(database, connected_flag);
if (!obj)
return -1;
snprintf(sql, sizeof(sql), "DELETE FROM %s WHERE ", table);
while((newparam = va_arg(aq, const char *))) {
snprintf(sql + strlen(sql), sizeof(sql) - strlen(sql), "%s=? AND ", newparam);
va_arg(aq, const char *);
}
va_end(aq);
snprintf(sql + strlen(sql), sizeof(sql) - strlen(sql), "%s=?", keyfield);
stmt = ast_odbc_prepare_and_execute(obj, custom_prepare, &cps);
if (!stmt) {
ast_odbc_release_obj(obj);
return -1;
}
res = SQLRowCount(stmt, &rowcount);
SQLFreeHandle (SQL_HANDLE_STMT, stmt);
ast_odbc_release_obj(obj);
if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
ast_log(LOG_WARNING, "SQL Row Count error!\n[%s]\n\n", sql);
return -1;
}
if (rowcount >= 0)
return (int)rowcount;
return -1;
}
struct config_odbc_obj {
char *sql;
unsigned long cat_metric;
char category[128];
char var_name[128];
char var_val[1024]; /* changed from 128 to 1024 via bug 8251 */
SQLLEN err;
};
static SQLHSTMT config_odbc_prepare(struct odbc_obj *obj, void *data)
{
struct config_odbc_obj *q = data;
SQLHSTMT sth;
int res;
res = SQLAllocHandle(SQL_HANDLE_STMT, obj->con, &sth);
if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
ast_verb(4, "Failure in AllocStatement %d\n", res);
return NULL;
}
res = SQLPrepare(sth, (unsigned char *)q->sql, SQL_NTS);
if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
ast_verb(4, "Error in PREPARE %d\n", res);
SQLFreeHandle(SQL_HANDLE_STMT, sth);
return NULL;
}
SQLBindCol(sth, 1, SQL_C_ULONG, &q->cat_metric, sizeof(q->cat_metric), &q->err);
SQLBindCol(sth, 2, SQL_C_CHAR, q->category, sizeof(q->category), &q->err);
SQLBindCol(sth, 3, SQL_C_CHAR, q->var_name, sizeof(q->var_name), &q->err);
SQLBindCol(sth, 4, SQL_C_CHAR, q->var_val, sizeof(q->var_val), &q->err);
return sth;
}
static struct ast_config *config_odbc(const char *database, const char *table, const char *file, struct ast_config *cfg, struct ast_flags flags, const char *sugg_incl, const char *who_asked)
{
struct ast_variable *new_v;
struct ast_category *cur_cat;
int res = 0;
struct odbc_obj *obj;
char sqlbuf[1024] = "";
char *sql = sqlbuf;
size_t sqlleft = sizeof(sqlbuf);
unsigned int last_cat_metric = 0;
SQLSMALLINT rowcount = 0;
SQLHSTMT stmt;
char last[128] = "";
struct config_odbc_obj q;
struct ast_flags loader_flags = { 0 };
struct ast_flags connected_flag = { RES_ODBC_CONNECTED };
memset(&q, 0, sizeof(q));
if (!file || !strcmp (file, "res_config_odbc.conf"))
return NULL; /* cant configure myself with myself ! */
obj = ast_odbc_request_obj2(database, connected_flag);
if (!obj)
return NULL;
ast_build_string(&sql, &sqlleft, "SELECT cat_metric, category, var_name, var_val FROM %s ", table);
ast_build_string(&sql, &sqlleft, "WHERE filename='%s' AND commented=0 ", file);
ast_build_string(&sql, &sqlleft, "ORDER BY cat_metric DESC, var_metric ASC, category, var_name ");
q.sql = sqlbuf;
stmt = ast_odbc_prepare_and_execute(obj, config_odbc_prepare, &q);
if (!stmt) {
ast_log(LOG_WARNING, "SQL select error!\n[%s]\n\n", sql);
ast_odbc_release_obj(obj);
return NULL;
}
res = SQLNumResultCols(stmt, &rowcount);
if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
ast_log(LOG_WARNING, "SQL NumResultCols error!\n[%s]\n\n", sql);
SQLFreeHandle(SQL_HANDLE_STMT, stmt);
ast_odbc_release_obj(obj);
return NULL;
}
if (!rowcount) {
ast_log(LOG_NOTICE, "found nothing\n");
ast_odbc_release_obj(obj);
return cfg;
}
cur_cat = ast_config_get_current_category(cfg);
while ((res = SQLFetch(stmt)) != SQL_NO_DATA) {
if (!strcmp (q.var_name, "#include")) {
if (!ast_config_internal_load(q.var_val, cfg, loader_flags, "", who_asked)) {
SQLFreeHandle(SQL_HANDLE_STMT, stmt);
ast_odbc_release_obj(obj);
return NULL;
}
continue;
}
if (strcmp(last, q.category) || last_cat_metric != q.cat_metric) {
cur_cat = ast_category_new(q.category, "", 99999);
if (!cur_cat) {
ast_log(LOG_WARNING, "Out of memory!\n");
break;
}
strcpy(last, q.category);
last_cat_metric = q.cat_metric;
ast_category_append(cfg, cur_cat);
}
new_v = ast_variable_new(q.var_name, q.var_val, "");
ast_variable_append(cur_cat, new_v);
}
SQLFreeHandle(SQL_HANDLE_STMT, stmt);
ast_odbc_release_obj(obj);
return cfg;
}
#define warn_length(col, size) ast_log(LOG_WARNING, "Realtime table %s@%s: column '%s' is not long enough to contain realtime data (needs %d)\n", table, database, col->name, size)
#define warn_type(col, type) ast_log(LOG_WARNING, "Realtime table %s@%s: column '%s' is of the incorrect type (%d) to contain the required realtime data\n", table, database, col->name, col->type)
static int require_odbc(const char *database, const char *table, va_list ap)
{
struct odbc_cache_tables *tableptr = ast_odbc_find_table(database, table);
struct odbc_cache_columns *col;
char *elm;
int type, size;
if (!tableptr) {
return -1;
}
while ((elm = va_arg(ap, char *))) {
type = va_arg(ap, require_type);
size = va_arg(ap, int);
/* Check if the field matches the criteria */
AST_RWLIST_TRAVERSE(&tableptr->columns, col, list) {
if (strcmp(col->name, elm) == 0) {
/* Type check, first. Some fields are more particular than others */
switch (col->type) {
case SQL_CHAR:
case SQL_VARCHAR:
case SQL_LONGVARCHAR:
#ifdef HAVE_ODBC_WCHAR
case SQL_WCHAR:
case SQL_WVARCHAR:
case SQL_WLONGVARCHAR:
#endif
case SQL_BINARY:
case SQL_VARBINARY:
case SQL_LONGVARBINARY:
case SQL_GUID:
#define CHECK_SIZE(n) \
if (col->size < n) { \
warn_length(col, n); \
} \
break;
switch (type) {
case RQ_UINTEGER1: CHECK_SIZE(3) /* 255 */
case RQ_INTEGER1: CHECK_SIZE(4) /* -128 */
case RQ_UINTEGER2: CHECK_SIZE(5) /* 65535 */
case RQ_INTEGER2: CHECK_SIZE(6) /* -32768 */
case RQ_UINTEGER3: /* 16777215 */
case RQ_INTEGER3: CHECK_SIZE(8) /* -8388608 */
case RQ_DATE: /* 2008-06-09 */
case RQ_UINTEGER4: CHECK_SIZE(10) /* 4200000000 */
case RQ_INTEGER4: CHECK_SIZE(11) /* -2100000000 */
case RQ_DATETIME: /* 2008-06-09 16:03:47 */
case RQ_UINTEGER8: CHECK_SIZE(19) /* trust me */
case RQ_INTEGER8: CHECK_SIZE(20) /* ditto */
case RQ_FLOAT:
case RQ_CHAR: CHECK_SIZE(size)
}
#undef CHECK_SIZE
break;
case SQL_TYPE_DATE:
if (type != RQ_DATE) {
warn_type(col, type);
}
break;
case SQL_TYPE_TIMESTAMP:
case SQL_TIMESTAMP:
if (type != RQ_DATE && type != RQ_DATETIME) {
warn_type(col, type);
}
break;
case SQL_BIT:
warn_length(col, size);
break;
#define WARN_TYPE_OR_LENGTH(n) \
if (!ast_rq_is_int(type)) { \
warn_type(col, type); \
} else { \
warn_length(col, n); \
}
case SQL_TINYINT:
if (type != RQ_UINTEGER1) {
WARN_TYPE_OR_LENGTH(size)
}
break;
case SQL_C_STINYINT:
if (type != RQ_INTEGER1) {
WARN_TYPE_OR_LENGTH(size)
}
break;
case SQL_C_USHORT:
if (type != RQ_UINTEGER1 && type != RQ_INTEGER1 && type != RQ_UINTEGER2) {
WARN_TYPE_OR_LENGTH(size)
}
break;
case SQL_SMALLINT:
case SQL_C_SSHORT:
if (type != RQ_UINTEGER1 && type != RQ_INTEGER1 && type != RQ_INTEGER2) {
WARN_TYPE_OR_LENGTH(size)
}
break;
case SQL_C_ULONG:
if (type != RQ_UINTEGER1 && type != RQ_INTEGER1 &&
type != RQ_UINTEGER2 && type != RQ_INTEGER2 &&
type != RQ_UINTEGER3 && type != RQ_INTEGER3 &&
type != RQ_INTEGER4) {
WARN_TYPE_OR_LENGTH(size)
}
break;
case SQL_INTEGER:
case SQL_C_SLONG:
if (type != RQ_UINTEGER1 && type != RQ_INTEGER1 &&
type != RQ_UINTEGER2 && type != RQ_INTEGER2 &&
type != RQ_UINTEGER3 && type != RQ_INTEGER3 &&
type != RQ_INTEGER4) {
WARN_TYPE_OR_LENGTH(size)
}
break;
case SQL_C_UBIGINT:
if (type != RQ_UINTEGER1 && type != RQ_INTEGER1 &&
type != RQ_UINTEGER2 && type != RQ_INTEGER2 &&
type != RQ_UINTEGER3 && type != RQ_INTEGER3 &&
type != RQ_UINTEGER4 && type != RQ_INTEGER4 &&
type != RQ_INTEGER8) {
WARN_TYPE_OR_LENGTH(size)
}
break;
case SQL_BIGINT:
case SQL_C_SBIGINT:
if (type != RQ_UINTEGER1 && type != RQ_INTEGER1 &&
type != RQ_UINTEGER2 && type != RQ_INTEGER2 &&
type != RQ_UINTEGER3 && type != RQ_INTEGER3 &&
type != RQ_UINTEGER4 && type != RQ_INTEGER4 &&
type != RQ_INTEGER8) {
WARN_TYPE_OR_LENGTH(size)
}
break;
#undef WARN_TYPE_OR_LENGTH
case SQL_NUMERIC:
case SQL_DECIMAL:
case SQL_FLOAT:
case SQL_REAL:
case SQL_DOUBLE:
if (!ast_rq_is_int(type) && type != RQ_FLOAT) {
warn_type(col, type);
}
break;
default:
ast_log(LOG_WARNING, "Realtime table %s@%s: column type (%d) unrecognized for column '%s'\n", table, database, col->type, elm);
}
break;
}
}
if (!col) {
ast_log(LOG_WARNING, "Realtime table %s@%s requires column '%s', but that column does not exist!\n", table, database, elm);
}
}
va_end(ap);
AST_RWLIST_UNLOCK(&tableptr->columns);
return 0;
}
#undef warn_length
#undef warn_type
static struct ast_config_engine odbc_engine = {
.name = "odbc",
.load_func = config_odbc,
.realtime_func = realtime_odbc,
.realtime_multi_func = realtime_multi_odbc,
.store_func = store_odbc,
.destroy_func = destroy_odbc,
.update_func = update_odbc,
.update2_func = update2_odbc,
.require_func = require_odbc,
.unload_func = ast_odbc_clear_cache,
};
static int unload_module (void)
{
ast_config_engine_deregister(&odbc_engine);
ast_verb(1, "res_config_odbc unloaded.\n");
return 0;
}
static int load_module (void)
{
ast_config_engine_register(&odbc_engine);
ast_verb(1, "res_config_odbc loaded.\n");
return 0;
}
static int reload_module(void)
{
return 0;
}
AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_LOAD_ORDER, "Realtime ODBC configuration",
.load = load_module,
.unload = unload_module,
.reload = reload_module,
.load_pri = AST_MODPRI_REALTIME_DRIVER,
);
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