diff options
Diffstat (limited to 'trunk/res/res_config_pgsql.c')
-rw-r--r-- | trunk/res/res_config_pgsql.c | 1008 |
1 files changed, 1008 insertions, 0 deletions
diff --git a/trunk/res/res_config_pgsql.c b/trunk/res/res_config_pgsql.c new file mode 100644 index 000000000..81da43456 --- /dev/null +++ b/trunk/res/res_config_pgsql.c @@ -0,0 +1,1008 @@ +/* + * 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 = sqlbuf; + 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 + ); |