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asterisk/res/res_config_pgsql.c

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/*
* Asterisk -- A telephony toolkit for Linux.
*
* Copyright (C) 1999-2005, Digium, Inc.
*
* Manuel Guesdon <mguesdon@oxymium.net> - PostgreSQL RealTime Driver Author/Adaptor
* Mark Spencer <markster@digium.com> - Asterisk Author
* Matthew Boehm <mboehm@cytelcom.com> - MySQL RealTime Driver Author
*
* res_config_pgsql.c <PostgreSQL plugin for RealTime configuration engine>
*
* v1.0 - (07-11-05) - Initial version based on res_config_mysql v2.0
*/
/*! \file
*
* \brief PostgreSQL plugin for Asterisk RealTime Architecture
*
* \author Mark Spencer <markster@digium.com>
* \author Manuel Guesdon <mguesdon@oxymium.net> - PostgreSQL RealTime Driver Author/Adaptor
*
* \arg http://www.postgresql.org
*/
/*** MODULEINFO
<depend>pgsql</depend>
***/
#include "asterisk.h"
ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
#include <libpq-fe.h> /* PostgreSQL */
#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/utils.h"
#include "asterisk/cli.h"
AST_MUTEX_DEFINE_STATIC(pgsql_lock);
#define RES_CONFIG_PGSQL_CONF "res_pgsql.conf"
PGconn *pgsqlConn = NULL;
#define MAX_DB_OPTION_SIZE 64
static char dbhost[MAX_DB_OPTION_SIZE] = "";
static char dbuser[MAX_DB_OPTION_SIZE] = "";
static char dbpass[MAX_DB_OPTION_SIZE] = "";
static char dbname[MAX_DB_OPTION_SIZE] = "";
static char dbsock[MAX_DB_OPTION_SIZE] = "";
static int dbport = 5432;
static time_t connect_time = 0;
static int parse_config(int reload);
static int pgsql_reconnect(const char *database);
static char *handle_cli_realtime_pgsql_status(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a);
static struct ast_cli_entry cli_realtime[] = {
AST_CLI_DEFINE(handle_cli_realtime_pgsql_status, "Shows connection information for the PostgreSQL RealTime driver"),
};
static struct ast_variable *realtime_pgsql(const char *database, const char *table, va_list ap)
{
PGresult *result = NULL;
int num_rows = 0, pgerror;
char sql[256], escapebuf[513];
char *stringp;
char *chunk;
char *op;
const char *newparam, *newval;
struct ast_variable *var = NULL, *prev = NULL;
if (!table) {
ast_log(LOG_WARNING, "PostgreSQL RealTime: No table specified.\n");
return NULL;
}
/* Get the first parameter and first value in our list of passed paramater/value pairs */
newparam = va_arg(ap, const char *);
newval = va_arg(ap, const char *);
if (!newparam || !newval) {
ast_log(LOG_WARNING,
"PostgreSQL RealTime: Realtime retrieval requires at least 1 parameter and 1 value to search on.\n");
if (pgsqlConn) {
PQfinish(pgsqlConn);
pgsqlConn = NULL;
};
return NULL;
}
/* Create the first part of the query using the first parameter/value pairs we just extracted
If there is only 1 set, then we have our query. Otherwise, loop thru the list and concat */
op = strchr(newparam, ' ') ? "" : " =";
PQescapeStringConn(pgsqlConn, escapebuf, newval, (sizeof(escapebuf) - 1) / 2, &pgerror);
if (pgerror) {
ast_log(LOG_ERROR, "Postgres detected invalid input: '%s'\n", newval);
va_end(ap);
return NULL;
}
snprintf(sql, sizeof(sql), "SELECT * FROM %s WHERE %s%s '%s'", table, newparam, op,
escapebuf);
while ((newparam = va_arg(ap, const char *))) {
newval = va_arg(ap, const char *);
if (!strchr(newparam, ' '))
op = " =";
else
op = "";
PQescapeStringConn(pgsqlConn, escapebuf, newval, (sizeof(escapebuf) - 1) / 2, &pgerror);
if (pgerror) {
ast_log(LOG_ERROR, "Postgres detected invalid input: '%s'\n", newval);
va_end(ap);
return NULL;
}
snprintf(sql + strlen(sql), sizeof(sql) - strlen(sql), " AND %s%s '%s'", newparam,
op, escapebuf);
}
va_end(ap);
/* We now have our complete statement; Lets connect to the server and execute it. */
ast_mutex_lock(&pgsql_lock);
if (!pgsql_reconnect(database)) {
ast_mutex_unlock(&pgsql_lock);
return NULL;
}
if (!(result = PQexec(pgsqlConn, sql))) {
ast_log(LOG_WARNING,
"PostgreSQL RealTime: Failed to query database. Check debug for more info.\n");
ast_debug(1, "PostgreSQL RealTime: Query: %s\n", sql);
ast_debug(1, "PostgreSQL RealTime: Query Failed because: %s\n", PQerrorMessage(pgsqlConn));
ast_mutex_unlock(&pgsql_lock);
return NULL;
} else {
ExecStatusType result_status = PQresultStatus(result);
if (result_status != PGRES_COMMAND_OK
&& result_status != PGRES_TUPLES_OK
&& result_status != PGRES_NONFATAL_ERROR) {
ast_log(LOG_WARNING,
"PostgreSQL RealTime: Failed to query database. Check debug for more info.\n");
ast_debug(1, "PostgreSQL RealTime: Query: %s\n", sql);
ast_debug(1, "PostgreSQL RealTime: Query Failed because: %s (%s)\n",
PQresultErrorMessage(result), PQresStatus(result_status));
ast_mutex_unlock(&pgsql_lock);
return NULL;
}
}
ast_debug(1, "PostgreSQL RealTime: Result=%p Query: %s\n", result, sql);
if ((num_rows = PQntuples(result)) > 0) {
int i = 0;
int rowIndex = 0;
int numFields = PQnfields(result);
char **fieldnames = NULL;
ast_debug(1, "PostgreSQL RealTime: Found %d rows.\n", num_rows);
if (!(fieldnames = ast_calloc(1, numFields * sizeof(char *)))) {
ast_mutex_unlock(&pgsql_lock);
PQclear(result);
return NULL;
}
for (i = 0; i < numFields; i++)
fieldnames[i] = PQfname(result, i);
for (rowIndex = 0; rowIndex < num_rows; rowIndex++) {
for (i = 0; i < numFields; i++) {
stringp = PQgetvalue(result, rowIndex, i);
while (stringp) {
chunk = strsep(&stringp, ";");
if (!ast_strlen_zero(ast_strip(chunk))) {
if (prev) {
prev->next = ast_variable_new(fieldnames[i], chunk, "");
if (prev->next) {
prev = prev->next;
}
} else {
prev = var = ast_variable_new(fieldnames[i], chunk, "");
}
}
}
}
}
ast_free(fieldnames);
} else {
ast_log(LOG_WARNING,
"PostgreSQL RealTime: Could not find any rows in table %s.\n", table);
}
ast_mutex_unlock(&pgsql_lock);
PQclear(result);
return var;
}
static struct ast_config *realtime_multi_pgsql(const char *database, const char *table, va_list ap)
{
PGresult *result = NULL;
int num_rows = 0, pgerror;
char sql[256], escapebuf[513];
const char *initfield = NULL;
char *stringp;
char *chunk;
char *op;
const char *newparam, *newval;
struct ast_variable *var = NULL;
struct ast_config *cfg = NULL;
struct ast_category *cat = NULL;
if (!table) {
ast_log(LOG_WARNING, "PostgreSQL RealTime: No table specified.\n");
return NULL;
}
if (!(cfg = ast_config_new()))
return NULL;
/* Get the first parameter and first value in our list of passed paramater/value pairs */
newparam = va_arg(ap, const char *);
newval = va_arg(ap, const char *);
if (!newparam || !newval) {
ast_log(LOG_WARNING,
"PostgreSQL RealTime: Realtime retrieval requires at least 1 parameter and 1 value to search on.\n");
if (pgsqlConn) {
PQfinish(pgsqlConn);
pgsqlConn = NULL;
};
return NULL;
}
initfield = ast_strdupa(newparam);
if ((op = strchr(initfield, ' '))) {
*op = '\0';
}
/* Create the first part of the query using the first parameter/value pairs we just extracted
If there is only 1 set, then we have our query. Otherwise, loop thru the list and concat */
if (!strchr(newparam, ' '))
op = " =";
else
op = "";
PQescapeStringConn(pgsqlConn, escapebuf, newval, (sizeof(escapebuf) - 1) / 2, &pgerror);
if (pgerror) {
ast_log(LOG_ERROR, "Postgres detected invalid input: '%s'\n", newval);
va_end(ap);
return NULL;
}
snprintf(sql, sizeof(sql), "SELECT * FROM %s WHERE %s%s '%s'", table, newparam, op,
escapebuf);
while ((newparam = va_arg(ap, const char *))) {
newval = va_arg(ap, const char *);
if (!strchr(newparam, ' '))
op = " =";
else
op = "";
PQescapeStringConn(pgsqlConn, escapebuf, newval, (sizeof(escapebuf) - 1) / 2, &pgerror);
if (pgerror) {
ast_log(LOG_ERROR, "Postgres detected invalid input: '%s'\n", newval);
va_end(ap);
return NULL;
}
snprintf(sql + strlen(sql), sizeof(sql) - strlen(sql), " AND %s%s '%s'", newparam,
op, escapebuf);
}
if (initfield) {
snprintf(sql + strlen(sql), sizeof(sql) - strlen(sql), " ORDER BY %s", initfield);
}
va_end(ap);
/* We now have our complete statement; Lets connect to the server and execute it. */
ast_mutex_lock(&pgsql_lock);
if (!pgsql_reconnect(database)) {
ast_mutex_unlock(&pgsql_lock);
return NULL;
}
if (!(result = PQexec(pgsqlConn, sql))) {
ast_log(LOG_WARNING,
"PostgreSQL RealTime: Failed to query database. Check debug for more info.\n");
ast_debug(1, "PostgreSQL RealTime: Query: %s\n", sql);
ast_debug(1, "PostgreSQL RealTime: Query Failed because: %s\n", PQerrorMessage(pgsqlConn));
ast_mutex_unlock(&pgsql_lock);
return NULL;
} else {
ExecStatusType result_status = PQresultStatus(result);
if (result_status != PGRES_COMMAND_OK
&& result_status != PGRES_TUPLES_OK
&& result_status != PGRES_NONFATAL_ERROR) {
ast_log(LOG_WARNING,
"PostgreSQL RealTime: Failed to query database. Check debug for more info.\n");
ast_debug(1, "PostgreSQL RealTime: Query: %s\n", sql);
ast_debug(1, "PostgreSQL RealTime: Query Failed because: %s (%s)\n",
PQresultErrorMessage(result), PQresStatus(result_status));
ast_mutex_unlock(&pgsql_lock);
return NULL;
}
}
ast_debug(1, "PostgreSQL RealTime: Result=%p Query: %s\n", result, sql);
if ((num_rows = PQntuples(result)) > 0) {
int numFields = PQnfields(result);
int i = 0;
int rowIndex = 0;
char **fieldnames = NULL;
ast_debug(1, "PostgreSQL RealTime: Found %d rows.\n", num_rows);
if (!(fieldnames = ast_calloc(1, numFields * sizeof(char *)))) {
ast_mutex_unlock(&pgsql_lock);
PQclear(result);
return NULL;
}
for (i = 0; i < numFields; i++)
fieldnames[i] = PQfname(result, i);
for (rowIndex = 0; rowIndex < num_rows; rowIndex++) {
var = NULL;
if (!(cat = ast_category_new("","",99999)))
continue;
for (i = 0; i < numFields; i++) {
stringp = PQgetvalue(result, rowIndex, i);
while (stringp) {
chunk = strsep(&stringp, ";");
if (!ast_strlen_zero(ast_strip(chunk))) {
if (initfield && !strcmp(initfield, fieldnames[i])) {
ast_category_rename(cat, chunk);
}
var = ast_variable_new(fieldnames[i], chunk, "");
ast_variable_append(cat, var);
}
}
}
ast_category_append(cfg, cat);
}
ast_free(fieldnames);
} else {
ast_log(LOG_WARNING,
"PostgreSQL RealTime: Could not find any rows in table %s.\n", table);
}
ast_mutex_unlock(&pgsql_lock);
PQclear(result);
return cfg;
}
static int update_pgsql(const char *database, const char *table, const char *keyfield,
const char *lookup, va_list ap)
{
PGresult *result = NULL;
int numrows = 0, pgerror;
char sql[256], escapebuf[513];
const char *newparam, *newval;
if (!table) {
ast_log(LOG_WARNING, "PostgreSQL RealTime: No table specified.\n");
return -1;
}
/* Get the first parameter and first value in our list of passed paramater/value pairs */
newparam = va_arg(ap, const char *);
newval = va_arg(ap, const char *);
if (!newparam || !newval) {
ast_log(LOG_WARNING,
"PostgreSQL RealTime: Realtime retrieval requires at least 1 parameter and 1 value to search on.\n");
if (pgsqlConn) {
PQfinish(pgsqlConn);
pgsqlConn = NULL;
};
return -1;
}
/* Create the first part of the query using the first parameter/value pairs we just extracted
If there is only 1 set, then we have our query. Otherwise, loop thru the list and concat */
PQescapeStringConn(pgsqlConn, escapebuf, newval, (sizeof(escapebuf) - 1) / 2, &pgerror);
if (pgerror) {
ast_log(LOG_ERROR, "Postgres detected invalid input: '%s'\n", newval);
va_end(ap);
return -1;
}
snprintf(sql, sizeof(sql), "UPDATE %s SET %s = '%s'", table, newparam, escapebuf);
while ((newparam = va_arg(ap, const char *))) {
newval = va_arg(ap, const char *);
PQescapeStringConn(pgsqlConn, escapebuf, newval, (sizeof(escapebuf) - 1) / 2, &pgerror);
if (pgerror) {
ast_log(LOG_ERROR, "Postgres detected invalid input: '%s'\n", newval);
va_end(ap);
return -1;
}
snprintf(sql + strlen(sql), sizeof(sql) - strlen(sql), ", %s = '%s'", newparam,
escapebuf);
}
va_end(ap);
PQescapeStringConn(pgsqlConn, escapebuf, lookup, (sizeof(escapebuf) - 1) / 2, &pgerror);
if (pgerror) {
ast_log(LOG_ERROR, "Postgres detected invalid input: '%s'\n", lookup);
va_end(ap);
return -1;
}
snprintf(sql + strlen(sql), sizeof(sql) - strlen(sql), " WHERE %s = '%s'", keyfield,
escapebuf);
ast_debug(1, "PostgreSQL RealTime: Update SQL: %s\n", sql);
/* We now have our complete statement; Lets connect to the server and execute it. */
ast_mutex_lock(&pgsql_lock);
if (!pgsql_reconnect(database)) {
ast_mutex_unlock(&pgsql_lock);
return -1;
}
if (!(result = PQexec(pgsqlConn, sql))) {
ast_log(LOG_WARNING,
"PostgreSQL RealTime: Failed to query database. Check debug for more info.\n");
ast_debug(1, "PostgreSQL RealTime: Query: %s\n", sql);
ast_debug(1, "PostgreSQL RealTime: Query Failed because: %s\n", PQerrorMessage(pgsqlConn));
ast_mutex_unlock(&pgsql_lock);
return -1;
} else {
ExecStatusType result_status = PQresultStatus(result);
if (result_status != PGRES_COMMAND_OK
&& result_status != PGRES_TUPLES_OK
&& result_status != PGRES_NONFATAL_ERROR) {
ast_log(LOG_WARNING,
"PostgreSQL RealTime: Failed to query database. Check debug for more info.\n");
ast_debug(1, "PostgreSQL RealTime: Query: %s\n", sql);
ast_debug(1, "PostgreSQL RealTime: Query Failed because: %s (%s)\n",
PQresultErrorMessage(result), PQresStatus(result_status));
ast_mutex_unlock(&pgsql_lock);
return -1;
}
}
numrows = atoi(PQcmdTuples(result));
ast_mutex_unlock(&pgsql_lock);
ast_debug(1, "PostgreSQL RealTime: Updated %d rows on table: %s\n", numrows, table);
/* From http://dev.pgsql.com/doc/pgsql/en/pgsql-affected-rows.html
* An integer greater than zero indicates the number of rows affected
* Zero indicates that no records were updated
* -1 indicates that the query returned an error (although, if the query failed, it should have been caught above.)
*/
if (numrows >= 0)
return (int) numrows;
return -1;
}
static int store_pgsql(const char *database, const char *table, va_list ap)
{
PGresult *result = NULL;
Oid insertid;
char sql[256];
char params[256];
char vals[256];
char buf[256];
int pgresult;
const char *newparam, *newval;
if (!table) {
ast_log(LOG_WARNING, "PostgreSQL RealTime: No table specified.\n");
return -1;
}
/* Get the first parameter and first value in our list of passed paramater/value pairs */
newparam = va_arg(ap, const char *);
newval = va_arg(ap, const char *);
if (!newparam || !newval) {
ast_log(LOG_WARNING,
"PostgreSQL RealTime: Realtime storage requires at least 1 parameter and 1 value to store.\n");
if (pgsqlConn) {
PQfinish(pgsqlConn);
pgsqlConn = NULL;
};
return -1;
}
/* Must connect to the server before anything else, as the escape function requires the connection handle.. */
ast_mutex_lock(&pgsql_lock);
if (!pgsql_reconnect(database)) {
ast_mutex_unlock(&pgsql_lock);
return -1;
}
/* Create the first part of the query using the first parameter/value pairs we just extracted
If there is only 1 set, then we have our query. Otherwise, loop thru the list and concat */
PQescapeStringConn(pgsqlConn, buf, newparam, sizeof(newparam), &pgresult);
snprintf(params, sizeof(params), "%s", buf);
PQescapeStringConn(pgsqlConn, buf, newval, sizeof(newval), &pgresult);
snprintf(vals, sizeof(vals), "'%s'", buf);
while ((newparam = va_arg(ap, const char *))) {
newval = va_arg(ap, const char *);
PQescapeStringConn(pgsqlConn, buf, newparam, sizeof(newparam), &pgresult);
snprintf(params + strlen(params), sizeof(params) - strlen(params), ", %s", buf);
PQescapeStringConn(pgsqlConn, buf, newval, sizeof(newval), &pgresult);
snprintf(vals + strlen(vals), sizeof(vals) - strlen(vals), ", '%s'", buf);
}
va_end(ap);
snprintf(sql, sizeof(sql), "INSERT INTO (%s) VALUES (%s)", params, vals);
ast_debug(1, "PostgreSQL RealTime: Insert SQL: %s\n", sql);
if (!(result = PQexec(pgsqlConn, sql))) {
ast_log(LOG_WARNING,
"PostgreSQL RealTime: Failed to query database. Check debug for more info.\n");
ast_debug(1, "PostgreSQL RealTime: Query: %s\n", sql);
ast_debug(1, "PostgreSQL RealTime: Query Failed because: %s\n", PQerrorMessage(pgsqlConn));
ast_mutex_unlock(&pgsql_lock);
return -1;
} else {
ExecStatusType result_status = PQresultStatus(result);
if (result_status != PGRES_COMMAND_OK
&& result_status != PGRES_TUPLES_OK
&& result_status != PGRES_NONFATAL_ERROR) {
ast_log(LOG_WARNING,
"PostgreSQL RealTime: Failed to query database. Check debug for more info.\n");
ast_debug(1, "PostgreSQL RealTime: Query: %s\n", sql);
ast_debug(1, "PostgreSQL RealTime: Query Failed because: %s (%s)\n",
PQresultErrorMessage(result), PQresStatus(result_status));
ast_mutex_unlock(&pgsql_lock);
return -1;
}
}
insertid = PQoidValue(result);
ast_mutex_unlock(&pgsql_lock);
ast_debug(1, "PostgreSQL RealTime: row inserted on table: %s, id: %u\n", table, insertid);
/* From http://dev.pgsql.com/doc/pgsql/en/pgsql-affected-rows.html
* An integer greater than zero indicates the number of rows affected
* Zero indicates that no records were updated
* -1 indicates that the query returned an error (although, if the query failed, it should have been caught above.)
*/
if (insertid >= 0)
return (int) insertid;
return -1;
}
static int destroy_pgsql(const char *database, const char *table, const char *keyfield, const char *lookup, va_list ap)
{
PGresult *result = NULL;
int numrows = 0;
int pgresult;
char sql[256];
char buf[256], buf2[256];
const char *newparam, *newval;
if (!table) {
ast_log(LOG_WARNING, "PostgreSQL RealTime: No table specified.\n");
return -1;
}
/* Get the first parameter and first value in our list of passed paramater/value pairs */
/*newparam = va_arg(ap, const char *);
newval = va_arg(ap, const char *);
if (!newparam || !newval) {*/
if (ast_strlen_zero(keyfield) || ast_strlen_zero(lookup)) {
ast_log(LOG_WARNING,
"PostgreSQL RealTime: Realtime destroy requires at least 1 parameter and 1 value to search on.\n");
if (pgsqlConn) {
PQfinish(pgsqlConn);
pgsqlConn = NULL;
};
return -1;
}
/* Must connect to the server before anything else, as the escape function requires the connection handle.. */
ast_mutex_lock(&pgsql_lock);
if (!pgsql_reconnect(database)) {
ast_mutex_unlock(&pgsql_lock);
return -1;
}
/* Create the first part of the query using the first parameter/value pairs we just extracted
If there is only 1 set, then we have our query. Otherwise, loop thru the list and concat */
PQescapeStringConn(pgsqlConn, buf, keyfield, sizeof(keyfield), &pgresult);
PQescapeStringConn(pgsqlConn, buf2, lookup, sizeof(lookup), &pgresult);
snprintf(sql, sizeof(sql), "DELETE FROM %s WHERE %s = '%s'", table, buf, buf2);
while ((newparam = va_arg(ap, const char *))) {
newval = va_arg(ap, const char *);
PQescapeStringConn(pgsqlConn, buf, newparam, sizeof(newparam), &pgresult);
PQescapeStringConn(pgsqlConn, buf2, newval, sizeof(newval), &pgresult);
snprintf(sql + strlen(sql), sizeof(sql) - strlen(sql), " AND %s = '%s'", buf, buf2);
}
va_end(ap);
ast_debug(1, "PostgreSQL RealTime: Delete SQL: %s\n", sql);
if (!(result = PQexec(pgsqlConn, sql))) {
ast_log(LOG_WARNING,
"PostgreSQL RealTime: Failed to query database. Check debug for more info.\n");
ast_debug(1, "PostgreSQL RealTime: Query: %s\n", sql);
ast_debug(1, "PostgreSQL RealTime: Query Failed because: %s\n", PQerrorMessage(pgsqlConn));
ast_mutex_unlock(&pgsql_lock);
return -1;
} else {
ExecStatusType result_status = PQresultStatus(result);
if (result_status != PGRES_COMMAND_OK
&& result_status != PGRES_TUPLES_OK
&& result_status != PGRES_NONFATAL_ERROR) {
ast_log(LOG_WARNING,
"PostgreSQL RealTime: Failed to query database. Check debug for more info.\n");
ast_debug(1, "PostgreSQL RealTime: Query: %s\n", sql);
ast_debug(1, "PostgreSQL RealTime: Query Failed because: %s (%s)\n",
PQresultErrorMessage(result), PQresStatus(result_status));
ast_mutex_unlock(&pgsql_lock);
return -1;
}
}
numrows = atoi(PQcmdTuples(result));
ast_mutex_unlock(&pgsql_lock);
ast_debug(1, "PostgreSQL RealTime: Deleted %d rows on table: %s\n", numrows, table);
/* From http://dev.pgsql.com/doc/pgsql/en/pgsql-affected-rows.html
* An integer greater than zero indicates the number of rows affected
* Zero indicates that no records were updated
* -1 indicates that the query returned an error (although, if the query failed, it should have been caught above.)
*/
if (numrows >= 0)
return (int) numrows;
return -1;
}
static struct ast_config *config_pgsql(const char *database, const char *table,
const char *file, struct ast_config *cfg,
struct ast_flags flags, const char *suggested_incl)
{
PGresult *result = NULL;
long num_rows;
struct ast_variable *new_v;
struct ast_category *cur_cat = NULL;
char sqlbuf[1024] = "";
char *sql;
size_t sqlleft = sizeof(sqlbuf);
char last[80] = "";
int last_cat_metric = 0;
last[0] = '\0';
if (!file || !strcmp(file, RES_CONFIG_PGSQL_CONF)) {
ast_log(LOG_WARNING, "PostgreSQL RealTime: Cannot configure myself.\n");
return NULL;
}
ast_build_string(&sql, &sqlleft, "SELECT category, var_name, var_val, cat_metric 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 ");
ast_debug(1, "PostgreSQL RealTime: Static SQL: %s\n", sqlbuf);
/* We now have our complete statement; Lets connect to the server and execute it. */
ast_mutex_lock(&pgsql_lock);
if (!pgsql_reconnect(database)) {
ast_mutex_unlock(&pgsql_lock);
return NULL;
}
if (!(result = PQexec(pgsqlConn, sqlbuf))) {
ast_log(LOG_WARNING,
"PostgreSQL RealTime: Failed to query database. Check debug for more info.\n");
ast_debug(1, "PostgreSQL RealTime: Query: %s\n", sql);
ast_debug(1, "PostgreSQL RealTime: Query Failed because: %s\n", PQerrorMessage(pgsqlConn));
ast_mutex_unlock(&pgsql_lock);
return NULL;
} else {
ExecStatusType result_status = PQresultStatus(result);
if (result_status != PGRES_COMMAND_OK
&& result_status != PGRES_TUPLES_OK
&& result_status != PGRES_NONFATAL_ERROR) {
ast_log(LOG_WARNING,
"PostgreSQL RealTime: Failed to query database. Check debug for more info.\n");
ast_debug(1, "PostgreSQL RealTime: Query: %s\n", sql);
ast_debug(1, "PostgreSQL RealTime: Query Failed because: %s (%s)\n",
PQresultErrorMessage(result), PQresStatus(result_status));
ast_mutex_unlock(&pgsql_lock);
return NULL;
}
}
if ((num_rows = PQntuples(result)) > 0) {
int rowIndex = 0;
ast_debug(1, "PostgreSQL RealTime: Found %ld rows.\n", num_rows);
for (rowIndex = 0; rowIndex < num_rows; rowIndex++) {
char *field_category = PQgetvalue(result, rowIndex, 0);
char *field_var_name = PQgetvalue(result, rowIndex, 1);
char *field_var_val = PQgetvalue(result, rowIndex, 2);
char *field_cat_metric = PQgetvalue(result, rowIndex, 3);
if (!strcmp(field_var_name, "#include")) {
if (!ast_config_internal_load(field_var_val, cfg, flags, "")) {
PQclear(result);
ast_mutex_unlock(&pgsql_lock);
return NULL;
}
continue;
}
if (strcmp(last, field_category) || last_cat_metric != atoi(field_cat_metric)) {
cur_cat = ast_category_new(field_category, "", 99999);
if (!cur_cat)
break;
strcpy(last, field_category);
last_cat_metric = atoi(field_cat_metric);
ast_category_append(cfg, cur_cat);
}
new_v = ast_variable_new(field_var_name, field_var_val, "");
ast_variable_append(cur_cat, new_v);
}
} else {
ast_log(LOG_WARNING,
"PostgreSQL RealTime: Could not find config '%s' in database.\n", file);
}
PQclear(result);
ast_mutex_unlock(&pgsql_lock);
return cfg;
}
static struct ast_config_engine pgsql_engine = {
.name = "pgsql",
.load_func = config_pgsql,
.realtime_func = realtime_pgsql,
.realtime_multi_func = realtime_multi_pgsql,
.store_func = store_pgsql,
.destroy_func = destroy_pgsql,
.update_func = update_pgsql
};
static int load_module(void)
{
if(!parse_config(0))
return AST_MODULE_LOAD_DECLINE;
ast_config_engine_register(&pgsql_engine);
ast_verb(1, "PostgreSQL RealTime driver loaded.\n");
ast_cli_register_multiple(cli_realtime, sizeof(cli_realtime) / sizeof(struct ast_cli_entry));
return 0;
}
static int unload_module(void)
{
/* Acquire control before doing anything to the module itself. */
ast_mutex_lock(&pgsql_lock);
if (pgsqlConn) {
PQfinish(pgsqlConn);
pgsqlConn = NULL;
}
ast_cli_unregister_multiple(cli_realtime, sizeof(cli_realtime) / sizeof(struct ast_cli_entry));
ast_config_engine_deregister(&pgsql_engine);
ast_verb(1, "PostgreSQL RealTime unloaded.\n");
/* Unlock so something else can destroy the lock. */
ast_mutex_unlock(&pgsql_lock);
return 0;
}
static int reload(void)
{
parse_config(1);
return 0;
}
static int parse_config(int reload)
{
struct ast_config *config;
const char *s;
struct ast_flags config_flags = { reload ? CONFIG_FLAG_FILEUNCHANGED : 0 };
if ((config = ast_config_load(RES_CONFIG_PGSQL_CONF, config_flags)) == CONFIG_STATUS_FILEUNCHANGED)
return 0;
if (!config) {
ast_log(LOG_WARNING, "Unable to load config %s\n", RES_CONFIG_PGSQL_CONF);
return 0;
}
ast_mutex_lock(&pgsql_lock);
if (pgsqlConn) {
PQfinish(pgsqlConn);
pgsqlConn = NULL;
}
if (!(s = ast_variable_retrieve(config, "general", "dbuser"))) {
ast_log(LOG_WARNING,
"PostgreSQL RealTime: No database user found, using 'asterisk' as default.\n");
strcpy(dbuser, "asterisk");
} else {
ast_copy_string(dbuser, s, sizeof(dbuser));
}
if (!(s = ast_variable_retrieve(config, "general", "dbpass"))) {
ast_log(LOG_WARNING,
"PostgreSQL RealTime: No database password found, using 'asterisk' as default.\n");
strcpy(dbpass, "asterisk");
} else {
ast_copy_string(dbpass, s, sizeof(dbpass));
}
if (!(s = ast_variable_retrieve(config, "general", "dbhost"))) {
ast_log(LOG_WARNING,
"PostgreSQL RealTime: No database host found, using localhost via socket.\n");
dbhost[0] = '\0';
} else {
ast_copy_string(dbhost, s, sizeof(dbhost));
}
if (!(s = ast_variable_retrieve(config, "general", "dbname"))) {
ast_log(LOG_WARNING,
"PostgreSQL RealTime: No database name found, using 'asterisk' as default.\n");
strcpy(dbname, "asterisk");
} else {
ast_copy_string(dbname, s, sizeof(dbname));
}
if (!(s = ast_variable_retrieve(config, "general", "dbport"))) {
ast_log(LOG_WARNING,
"PostgreSQL RealTime: No database port found, using 5432 as default.\n");
dbport = 5432;
} else {
dbport = atoi(s);
}
if (!ast_strlen_zero(dbhost)) {
/* No socket needed */
} else if (!(s = ast_variable_retrieve(config, "general", "dbsock"))) {
ast_log(LOG_WARNING,
"PostgreSQL RealTime: No database socket found, using '/tmp/pgsql.sock' as default.\n");
strcpy(dbsock, "/tmp/pgsql.sock");
} else {
ast_copy_string(dbsock, s, sizeof(dbsock));
}
ast_config_destroy(config);
if (option_debug) {
if (!ast_strlen_zero(dbhost)) {
ast_debug(1, "PostgreSQL RealTime Host: %s\n", dbhost);
ast_debug(1, "PostgreSQL RealTime Port: %i\n", dbport);
} else {
ast_debug(1, "PostgreSQL RealTime Socket: %s\n", dbsock);
}
ast_debug(1, "PostgreSQL RealTime User: %s\n", dbuser);
ast_debug(1, "PostgreSQL RealTime Password: %s\n", dbpass);
ast_debug(1, "PostgreSQL RealTime DBName: %s\n", dbname);
}
if (!pgsql_reconnect(NULL)) {
ast_log(LOG_WARNING,
"PostgreSQL RealTime: Couldn't establish connection. Check debug.\n");
ast_debug(1, "PostgreSQL RealTime: Cannot Connect: %s\n", PQerrorMessage(pgsqlConn));
}
ast_verb(2, "PostgreSQL RealTime reloaded.\n");
/* Done reloading. Release lock so others can now use driver. */
ast_mutex_unlock(&pgsql_lock);
return 1;
}
static int pgsql_reconnect(const char *database)
{
char my_database[50];
ast_copy_string(my_database, S_OR(database, dbname), sizeof(my_database));
/* mutex lock should have been locked before calling this function. */
if (pgsqlConn && PQstatus(pgsqlConn) != CONNECTION_OK) {
PQfinish(pgsqlConn);
pgsqlConn = NULL;
}
if ((!pgsqlConn) && (!ast_strlen_zero(dbhost) || !ast_strlen_zero(dbsock)) && !ast_strlen_zero(dbuser) && !ast_strlen_zero(dbpass) && !ast_strlen_zero(my_database)) {
char *connInfo = NULL;
unsigned int size = 100 + strlen(dbhost)
+ strlen(dbuser)
+ strlen(dbpass)
+ strlen(my_database);
if (!(connInfo = ast_malloc(size)))
return 0;
sprintf(connInfo, "host=%s port=%d dbname=%s user=%s password=%s",
dbhost, dbport, my_database, dbuser, dbpass);
ast_debug(1, "%u connInfo=%s\n", size, connInfo);
pgsqlConn = PQconnectdb(connInfo);
ast_debug(1, "%u connInfo=%s\n", size, connInfo);
ast_free(connInfo);
connInfo = NULL;
ast_debug(1, "pgsqlConn=%p\n", pgsqlConn);
if (pgsqlConn && PQstatus(pgsqlConn) == CONNECTION_OK) {
ast_debug(1, "PostgreSQL RealTime: Successfully connected to database.\n");
connect_time = time(NULL);
return 1;
} else {
ast_log(LOG_ERROR,
"PostgreSQL RealTime: Failed to connect database server %s on %s. Check debug for more info.\n",
dbname, dbhost);
ast_debug(1, "PostgreSQL RealTime: Cannot Connect: %s\n", PQresultErrorMessage(NULL));
return 0;
}
} else {
ast_debug(1, "PostgreSQL RealTime: Everything is fine.\n");
return 1;
}
}
static char *handle_cli_realtime_pgsql_status(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
{
char status[256], status2[100] = "";
int ctime = time(NULL) - connect_time;
switch (cmd) {
case CLI_INIT:
e->command = "realtime pgsql status";
e->usage =
"Usage: realtime pgsql status\n"
" Shows connection information for the PostgreSQL RealTime driver\n";
return NULL;
case CLI_GENERATE:
return NULL;
}
if (a->argc != 3)
return CLI_SHOWUSAGE;
if (pgsqlConn && PQstatus(pgsqlConn) == CONNECTION_OK) {
if (!ast_strlen_zero(dbhost))
snprintf(status, 255, "Connected to %s@%s, port %d", dbname, dbhost, dbport);
else if (!ast_strlen_zero(dbsock))
snprintf(status, 255, "Connected to %s on socket file %s", dbname, dbsock);
else
snprintf(status, 255, "Connected to %s@%s", dbname, dbhost);
if (!ast_strlen_zero(dbuser))
snprintf(status2, 99, " with username %s", dbuser);
if (ctime > 31536000)
ast_cli(a->fd, "%s%s for %d years, %d days, %d hours, %d minutes, %d seconds.\n",
status, status2, ctime / 31536000, (ctime % 31536000) / 86400,
(ctime % 86400) / 3600, (ctime % 3600) / 60, ctime % 60);
else if (ctime > 86400)
ast_cli(a->fd, "%s%s for %d days, %d hours, %d minutes, %d seconds.\n", status,
status2, ctime / 86400, (ctime % 86400) / 3600, (ctime % 3600) / 60,
ctime % 60);
else if (ctime > 3600)
ast_cli(a->fd, "%s%s for %d hours, %d minutes, %d seconds.\n", status, status2,
ctime / 3600, (ctime % 3600) / 60, ctime % 60);
else if (ctime > 60)
ast_cli(a->fd, "%s%s for %d minutes, %d seconds.\n", status, status2, ctime / 60,
ctime % 60);
else
ast_cli(a->fd, "%s%s for %d seconds.\n", status, status2, ctime);
return CLI_SUCCESS;
} else {
return CLI_FAILURE;
}
}
/* needs usecount semantics defined */
AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_GLOBAL_SYMBOLS, "PostgreSQL RealTime Configuration Driver",
.load = load_module,
.unload = unload_module,
.reload = reload
);
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