cdr_pgsql.c File Reference

PostgreSQL CDR logger. More...

#include "asterisk.h"
#include <libpq-fe.h>
#include "asterisk/config.h"
#include "asterisk/channel.h"
#include "asterisk/cdr.h"
#include "asterisk/cli.h"
#include "asterisk/module.h"

Include dependency graph for cdr_pgsql.c:

Go to the source code of this file.

Data Structures
struct	columns
struct	psql_columns

Macros
#define	DATE_FORMAT   "'%Y-%m-%d %T'"
#define	LENGTHEN_BUF(size, var_sql)
#define	LENGTHEN_BUF1(size)    LENGTHEN_BUF(size, sql);
#define	LENGTHEN_BUF2(size)    LENGTHEN_BUF(size, sql2);
#define	PGSQL_MIN_VERSION_SCHEMA   70300

Functions
static void	__reg_module (void)
static void	__unreg_module (void)
struct ast_module *	AST_MODULE_SELF_SYM (void)
static int	config_module (int reload)
static void	empty_columns (void)
static char *	handle_cdr_pgsql_status (struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
	Handle the CLI command cdr show pgsql status. More...
static int	load_module (void)
static int	pgsql_log (struct ast_cdr *cdr)
static void	pgsql_reconnect (void)
static int	reload (void)
static int	unload_module (void)

Variables
static struct ast_module_info	__mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "PostgreSQL CDR Backend" , .key = "This paragraph is copyright (c) 2006 by Digium, Inc. \In order for your module to load, it must return this \key via a function called \"key\". Any code which \includes this paragraph must be licensed under the GNU \General Public License version 2 or later (at your \option). In addition to Digium's general reservations \of rights, Digium expressly reserves the right to \allow other parties to license this paragraph under \different terms. Any use of Digium, Inc. trademarks or \logos (including \"Asterisk\" or \"Digium\") without \express written permission of Digium, Inc. is prohibited.\n" , .buildopt_sum = AST_BUILDOPT_SUM, .support_level = AST_MODULE_SUPPORT_EXTENDED, .load = load_module, .unload = unload_module, .reload = reload, .load_pri = AST_MODPRI_CDR_DRIVER, .requires = "cdr", }
static const struct ast_module_info *	ast_module_info = &__mod_info
static struct ast_cli_entry	cdr_pgsql_status_cli []
static const char	config [] = "cdr_pgsql.conf"
static PGconn *	conn = NULL
static time_t	connect_time = 0
static int	connected = 0
static char *	encoding
static int	maxsize = 512
static int	maxsize2 = 512
static const char	name [] = "pgsql"
static char *	pgappname
static char *	pgdbname
static char *	pgdbport
static char *	pgdbuser
static char *	pghostname
static char *	pgpassword
static ast_mutex_t	pgsql_lock = { PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP , NULL, {1, 0} }
static struct psql_columns	psql_columns = { .first = NULL, .last = NULL, .lock = { PTHREAD_RWLOCK_INITIALIZER , NULL, {1, 0} } , }
static int	records
static char *	table
static int	totalrecords = 0
static char *	tz

Detailed Description

PostgreSQL CDR logger.

Author

Matthew D. Hardeman mhard.nosp@m.emn@.nosp@m.paper.nosp@m.soft.nosp@m..com PostgreSQL http://www.postgresql.org/

Definition in file cdr_pgsql.c.

Macro Definition Documentation

DATE_FORMAT

#define DATE_FORMAT   "'%Y-%m-%d %T'"

Definition at line 56 of file cdr_pgsql.c.

LENGTHEN_BUF

#define LENGTHEN_BUF	(		size,
			var_sql
	)

Definition at line 100 of file cdr_pgsql.c.

LENGTHEN_BUF1

#define LENGTHEN_BUF1

(

size

)

LENGTHEN_BUF(size, sql);

Definition at line 115 of file cdr_pgsql.c.

LENGTHEN_BUF2

#define LENGTHEN_BUF2

(

size

)

LENGTHEN_BUF(size, sql2);

Definition at line 117 of file cdr_pgsql.c.

PGSQL_MIN_VERSION_SCHEMA

#define PGSQL_MIN_VERSION_SCHEMA   70300

Definition at line 58 of file cdr_pgsql.c.

Function Documentation

__reg_module()

static void __reg_module ( void  )

static

Definition at line 817 of file cdr_pgsql.c.

__unreg_module()

static void __unreg_module ( void  )

static

Definition at line 817 of file cdr_pgsql.c.

AST_MODULE_SELF_SYM()

struct ast_module * AST_MODULE_SELF_SYM

(

void

)

Definition at line 817 of file cdr_pgsql.c.

config_module()

static int config_module ( int  reload )

static

Definition at line 520 of file cdr_pgsql.c.

{
    char *pgerror;
    struct columns *cur;
    PGresult *result;
    const char *tmp;
    struct ast_config *cfg;
    struct ast_flags config_flags = { reload ? CONFIG_FLAG_FILEUNCHANGED : 0 };
 
    if ((cfg = ast_config_load(config, config_flags)) == NULL || cfg == CONFIG_STATUS_FILEINVALID) {
        ast_log(LOG_WARNING, "Unable to load config for PostgreSQL CDR's: %s\n", config);
        return -1;
    } else if (cfg == CONFIG_STATUS_FILEUNCHANGED) {
        return 0;
    }
 
    ast_mutex_lock(&pgsql_lock);
 
    if (!ast_variable_browse(cfg, "global")) {
        ast_config_destroy(cfg);
        ast_mutex_unlock(&pgsql_lock);
        ast_log(LOG_NOTICE, "cdr_pgsql configuration contains no global section, skipping module %s.\n",
            reload ? "reload" : "load");
        return -1;
    }
 
    if (!(tmp = ast_variable_retrieve(cfg, "global", "hostname"))) {
        ast_log(LOG_WARNING, "PostgreSQL server hostname not specified.  Assuming unix socket connection\n");
        tmp = "";   /* connect via UNIX-socket by default */
    }
 
    ast_free(pghostname);
    if (!(pghostname = ast_strdup(tmp))) {
        ast_config_destroy(cfg);
        ast_mutex_unlock(&pgsql_lock);
        return -1;
    }
 
    if (!(tmp = ast_variable_retrieve(cfg, "global", "dbname"))) {
        ast_log(LOG_WARNING, "PostgreSQL database not specified.  Assuming asterisk\n");
        tmp = "asteriskcdrdb";
    }
 
    ast_free(pgdbname);
    if (!(pgdbname = ast_strdup(tmp))) {
        ast_config_destroy(cfg);
        ast_mutex_unlock(&pgsql_lock);
        return -1;
    }
 
    if (!(tmp = ast_variable_retrieve(cfg, "global", "user"))) {
        ast_log(LOG_WARNING, "PostgreSQL database user not specified.  Assuming asterisk\n");
        tmp = "asterisk";
    }
 
    ast_free(pgdbuser);
    if (!(pgdbuser = ast_strdup(tmp))) {
        ast_config_destroy(cfg);
        ast_mutex_unlock(&pgsql_lock);
        return -1;
    }
 
    if (!(tmp = ast_variable_retrieve(cfg, "global", "appname"))) {
        tmp = "";
    }
 
    ast_free(pgappname);
    if (!(pgappname = ast_strdup(tmp))) {
        ast_config_destroy(cfg);
        ast_mutex_unlock(&pgsql_lock);
        return -1;
    }
 
 
    if (!(tmp = ast_variable_retrieve(cfg, "global", "password"))) {
        ast_log(LOG_WARNING, "PostgreSQL database password not specified.  Assuming blank\n");
        tmp = "";
    }
 
    ast_free(pgpassword);
    if (!(pgpassword = ast_strdup(tmp))) {
        ast_config_destroy(cfg);
        ast_mutex_unlock(&pgsql_lock);
        return -1;
    }
 
    if (!(tmp = ast_variable_retrieve(cfg, "global", "port"))) {
        ast_log(LOG_WARNING, "PostgreSQL database port not specified.  Using default 5432.\n");
        tmp = "5432";
    }
 
    ast_free(pgdbport);
    if (!(pgdbport = ast_strdup(tmp))) {
        ast_config_destroy(cfg);
        ast_mutex_unlock(&pgsql_lock);
        return -1;
    }
 
    if (!(tmp = ast_variable_retrieve(cfg, "global", "table"))) {
        ast_log(LOG_WARNING, "CDR table not specified.  Assuming cdr\n");
        tmp = "cdr";
    }
 
    ast_free(table);
    if (!(table = ast_strdup(tmp))) {
        ast_config_destroy(cfg);
        ast_mutex_unlock(&pgsql_lock);
        return -1;
    }
 
    if (!(tmp = ast_variable_retrieve(cfg, "global", "encoding"))) {
        ast_log(LOG_WARNING, "Encoding not specified.  Assuming LATIN9\n");
        tmp = "LATIN9";
    }
 
    ast_free(encoding);
    if (!(encoding = ast_strdup(tmp))) {
        ast_config_destroy(cfg);
        ast_mutex_unlock(&pgsql_lock);
        return -1;
    }
 
    if (!(tmp = ast_variable_retrieve(cfg, "global", "timezone"))) {
        tmp = "";
    }
 
    ast_free(tz);
    tz = NULL;
 
    if (!ast_strlen_zero(tmp) && !(tz = ast_strdup(tmp))) {
        ast_config_destroy(cfg);
        ast_mutex_unlock(&pgsql_lock);
        return -1;
    }
 
    if (DEBUG_ATLEAST(1)) {
        if (ast_strlen_zero(pghostname)) {
            ast_log(LOG_DEBUG, "using default unix socket\n");
        } else {
            ast_log(LOG_DEBUG, "got hostname of %s\n", pghostname);
        }
        ast_log(LOG_DEBUG, "got port of %s\n", pgdbport);
        ast_log(LOG_DEBUG, "got user of %s\n", pgdbuser);
        ast_log(LOG_DEBUG, "got dbname of %s\n", pgdbname);
        ast_log(LOG_DEBUG, "got password of %s\n", pgpassword);
        ast_log(LOG_DEBUG, "got application name of %s\n", pgappname);
        ast_log(LOG_DEBUG, "got sql table name of %s\n", table);
        ast_log(LOG_DEBUG, "got encoding of %s\n", encoding);
        ast_log(LOG_DEBUG, "got timezone of %s\n", tz);
    }
 
    pgsql_reconnect();
 
    if (PQstatus(conn) != CONNECTION_BAD) {
        char sqlcmd[768];
        char *fname, *ftype, *flen, *fnotnull, *fdef;
        int i, rows, version;
        ast_debug(1, "Successfully connected to PostgreSQL database.\n");
        connected = 1;
        connect_time = time(NULL);
        records = 0;
        if (PQsetClientEncoding(conn, encoding)) {
#ifdef HAVE_PGSQL_pg_encoding_to_char
            ast_log(LOG_WARNING, "Failed to set encoding to '%s'.  Encoding set to default '%s'\n", encoding, pg_encoding_to_char(PQclientEncoding(conn)));
#else
            ast_log(LOG_WARNING, "Failed to set encoding to '%s'.  Encoding set to default.\n", encoding);
#endif
        }
        version = PQserverVersion(conn);
 
        if (version >= PGSQL_MIN_VERSION_SCHEMA) {
            char *schemaname, *tablename, *tmp_schemaname, *tmp_tablename;
            if (strchr(table, '.')) {
                tmp_schemaname = ast_strdupa(table);
                tmp_tablename = strchr(tmp_schemaname, '.');
                *tmp_tablename++ = '\0';
            } else {
                tmp_schemaname = "";
                tmp_tablename = table;
            }
            tablename = ast_alloca(strlen(tmp_tablename) * 2 + 1);
            PQescapeStringConn(conn, tablename, tmp_tablename, strlen(tmp_tablename), NULL);
 
            schemaname = ast_alloca(strlen(tmp_schemaname) * 2 + 1);
            PQescapeStringConn(conn, schemaname, tmp_schemaname, strlen(tmp_schemaname), NULL);
 
            snprintf(sqlcmd, sizeof(sqlcmd), "SELECT a.attname, t.typname, a.attlen, a.attnotnull, pg_catalog.pg_get_expr(d.adbin, d.adrelid) adsrc, a.atttypmod FROM (((pg_catalog.pg_class c INNER JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace AND c.relname = '%s' AND n.nspname = %s%s%s) INNER JOIN pg_catalog.pg_attribute a ON (NOT a.attisdropped) AND a.attnum > 0 AND a.attrelid = c.oid) INNER JOIN pg_catalog.pg_type t ON t.oid = a.atttypid) LEFT OUTER JOIN pg_attrdef d ON a.atthasdef AND d.adrelid = a.attrelid AND d.adnum = a.attnum ORDER BY n.nspname, c.relname, attnum",
                tablename,
                ast_strlen_zero(schemaname) ? "" : "'", ast_strlen_zero(schemaname) ? "current_schema()" : schemaname, ast_strlen_zero(schemaname) ? "" : "'");
        } else {
            snprintf(sqlcmd, sizeof(sqlcmd), "SELECT a.attname, t.typname, a.attlen, a.attnotnull, d.adsrc, a.atttypmod FROM pg_class c, pg_type t, pg_attribute a LEFT OUTER JOIN pg_attrdef d ON a.atthasdef AND d.adrelid = a.attrelid AND d.adnum = a.attnum WHERE c.oid = a.attrelid AND a.atttypid = t.oid AND (a.attnum > 0) AND c.relname = '%s' ORDER BY c.relname, attnum", table);
        }
        /* Query the columns */
        result = PQexec(conn, sqlcmd);
        if (PQresultStatus(result) != PGRES_TUPLES_OK) {
            pgerror = PQresultErrorMessage(result);
            ast_log(LOG_ERROR, "Failed to query database columns: %s\n", pgerror);
            PQclear(result);
            unload_module();
            ast_mutex_unlock(&pgsql_lock);
            return AST_MODULE_LOAD_DECLINE;
        }
 
        rows = PQntuples(result);
        if (rows == 0) {
            ast_log(LOG_ERROR, "cdr_pgsql: Failed to query database columns. No columns found, does the table exist?\n");
            PQclear(result);
            unload_module();
            ast_mutex_unlock(&pgsql_lock);
            return AST_MODULE_LOAD_DECLINE;
        }
 
        /* Clear out the columns list. */
        empty_columns();
 
        for (i = 0; i < rows; i++) {
            fname = PQgetvalue(result, i, 0);
            ftype = PQgetvalue(result, i, 1);
            flen = PQgetvalue(result, i, 2);
            fnotnull = PQgetvalue(result, i, 3);
            fdef = PQgetvalue(result, i, 4);
            if (atoi(flen) == -1) {
                /* For varchar columns, the maximum length is encoded in a different field */
                flen = PQgetvalue(result, i, 5);
            }
 
            cur = ast_calloc(1, sizeof(*cur) + strlen(fname) + strlen(ftype) + 2);
            if (cur) {
                sscanf(flen, "%30d", &cur->len);
                cur->name = (char *)cur + sizeof(*cur);
                cur->type = (char *)cur + sizeof(*cur) + strlen(fname) + 1;
                strcpy(cur->name, fname);
                strcpy(cur->type, ftype);
                if (*fnotnull == 't') {
                    cur->notnull = 1;
                } else {
                    cur->notnull = 0;
                }
                if (!ast_strlen_zero(fdef)) {
                    cur->hasdefault = 1;
                } else {
                    cur->hasdefault = 0;
                }
                AST_RWLIST_WRLOCK(&psql_columns);
                AST_RWLIST_INSERT_TAIL(&psql_columns, cur, list);
                AST_RWLIST_UNLOCK(&psql_columns);
            }
        }
        PQclear(result);
    } else {
        pgerror = PQerrorMessage(conn);
        ast_log(LOG_ERROR, "Unable to connect to database server %s.  CALLS WILL NOT BE LOGGED!!\n", pghostname);
        ast_log(LOG_ERROR, "Reason: %s\n", pgerror);
        connected = 0;
        PQfinish(conn);
        conn = NULL;
    }
 
    ast_config_destroy(cfg);
 
    ast_mutex_unlock(&pgsql_lock);
    return 0;
}

References ast_alloca, ast_calloc, ast_config_destroy(), ast_config_load, ast_debug, ast_free, ast_log, AST_MODULE_LOAD_DECLINE, ast_mutex_lock, ast_mutex_unlock, AST_RWLIST_INSERT_TAIL, AST_RWLIST_UNLOCK, AST_RWLIST_WRLOCK, ast_strdup, ast_strdupa, ast_strlen_zero(), ast_variable_browse(), ast_variable_retrieve(), config, CONFIG_FLAG_FILEUNCHANGED, CONFIG_STATUS_FILEINVALID, CONFIG_STATUS_FILEUNCHANGED, conn, connect_time, connected, DEBUG_ATLEAST, empty_columns(), encoding, columns::hasdefault, columns::len, LOG_DEBUG, LOG_ERROR, LOG_NOTICE, LOG_WARNING, columns::name, columns::notnull, NULL, pgappname, pgdbname, pgdbport, pgdbuser, pghostname, pgpassword, pgsql_lock, PGSQL_MIN_VERSION_SCHEMA, pgsql_reconnect(), records, reload(), result, table, tmp(), columns::type, tz, unload_module(), and version.

Referenced by load_module(), and reload().

empty_columns()

static void empty_columns ( void  )

static

Definition at line 482 of file cdr_pgsql.c.

{
    struct columns *current;
    AST_RWLIST_WRLOCK(&psql_columns);
    while ((current = AST_RWLIST_REMOVE_HEAD(&psql_columns, list))) {
        ast_free(current);
    }
    AST_RWLIST_UNLOCK(&psql_columns);
 
}

References ast_free, AST_RWLIST_REMOVE_HEAD, AST_RWLIST_UNLOCK, AST_RWLIST_WRLOCK, current, and columns::list.

Referenced by config_module(), and unload_module().

handle_cdr_pgsql_status()

static char * handle_cdr_pgsql_status ( struct ast_cli_entry *  e, int  cmd, struct ast_cli_args *  a  )

static

Handle the CLI command cdr show pgsql status.

Definition at line 121 of file cdr_pgsql.c.

{
    switch (cmd) {
    case CLI_INIT:
        e->command = "cdr show pgsql status";
        e->usage =
            "Usage: cdr show pgsql status\n"
            "       Shows current connection status for cdr_pgsql\n";
        return NULL;
    case CLI_GENERATE:
        return NULL;
    }
 
    if (a->argc != e->args)
        return CLI_SHOWUSAGE;
 
    if (connected) {
        char status[256];
        char status2[100] = "";
        char buf[362]; /* 256+100+" for "+NULL */
        int ctime = time(NULL) - connect_time;
 
        if (pgdbport) {
            snprintf(status, 255, "Connected to %s@%s, port %s", pgdbname, pghostname, pgdbport);
        } else {
            snprintf(status, 255, "Connected to %s@%s", pgdbname, pghostname);
        }
 
        if (pgdbuser && *pgdbuser) {
            snprintf(status2, 99, " with username %s", pgdbuser);
        }
        if (table && *table) {
            snprintf(status2, 99, " using table %s", table);
        }
 
        snprintf(buf, sizeof(buf), "%s%s for ", status, status2);
        ast_cli_print_timestr_fromseconds(a->fd, ctime, buf);
 
        if (records == totalrecords) {
            ast_cli(a->fd, "  Wrote %d records since last restart.\n", totalrecords);
        } else {
            ast_cli(a->fd, "  Wrote %d records since last restart and %d records since last reconnect.\n", totalrecords, records);
        }
    } else {
        ast_cli(a->fd, "Not currently connected to a PgSQL server.\n");
    }
    return CLI_SUCCESS;
}

References a, ast_cli_entry::args, ast_cli(), ast_cli_print_timestr_fromseconds(), buf, CLI_GENERATE, CLI_INIT, CLI_SHOWUSAGE, CLI_SUCCESS, ast_cli_entry::command, connect_time, connected, NULL, pgdbname, pgdbport, pgdbuser, pghostname, records, status, table, totalrecords, and ast_cli_entry::usage.

load_module()

static int load_module ( void  )

static

Definition at line 784 of file cdr_pgsql.c.

{
    int res;
 
    if (config_module(0)) {
        res = AST_MODULE_LOAD_DECLINE;
    } else if (ast_cdr_register(name, ast_module_info->description, pgsql_log)) {
        res = AST_MODULE_LOAD_DECLINE;
    } else if (ast_cli_register_multiple(cdr_pgsql_status_cli, ARRAY_LEN(cdr_pgsql_status_cli))) {
        res = AST_MODULE_LOAD_DECLINE;
    } else {
        res = AST_MODULE_LOAD_SUCCESS;
    }
 
    if (res != AST_MODULE_LOAD_SUCCESS) {
        unload_module();
    }
 
    return res;
}

References ARRAY_LEN, ast_cdr_register(), ast_cli_register_multiple, AST_MODULE_LOAD_DECLINE, AST_MODULE_LOAD_SUCCESS, cdr_pgsql_status_cli, config_module(), ast_module_info::description, name, pgsql_log(), and unload_module().

pgsql_log()

static int pgsql_log ( struct ast_cdr *  cdr )

static

Definition at line 210 of file cdr_pgsql.c.

{
    struct ast_tm tm;
    char *pgerror;
    PGresult *result;
    int res = -1;
 
    ast_mutex_lock(&pgsql_lock);
 
    if ((!connected) && pghostname && pgdbuser && pgpassword && pgdbname) {
        pgsql_reconnect();
 
        if (PQstatus(conn) != CONNECTION_BAD) {
            connected = 1;
            connect_time = time(NULL);
            records = 0;
            if (PQsetClientEncoding(conn, encoding)) {
#ifdef HAVE_PGSQL_pg_encoding_to_char
                ast_log(LOG_WARNING, "Failed to set encoding to '%s'.  Encoding set to default '%s'\n", encoding, pg_encoding_to_char(PQclientEncoding(conn)));
#else
                ast_log(LOG_WARNING, "Failed to set encoding to '%s'.  Encoding set to default.\n", encoding);
#endif
            }
        } else {
            pgerror = PQerrorMessage(conn);
            ast_log(LOG_ERROR, "Unable to connect to database server %s.  Calls will not be logged!\n", pghostname);
            ast_log(LOG_ERROR, "Reason: %s\n", pgerror);
            PQfinish(conn);
            conn = NULL;
        }
    }
 
    if (connected) {
        struct columns *cur;
        struct ast_str *sql = ast_str_create(maxsize), *sql2 = ast_str_create(maxsize2);
        char buf[257];
        char *escapebuf = NULL, *value;
        char *separator = "";
        size_t bufsize = 513;
 
        escapebuf = ast_malloc(bufsize);
        if (!escapebuf || !sql || !sql2) {
            goto ast_log_cleanup;
        }
 
        ast_str_set(&sql, 0, "INSERT INTO %s (", table);
        ast_str_set(&sql2, 0, " VALUES (");
 
        AST_RWLIST_RDLOCK(&psql_columns);
        AST_RWLIST_TRAVERSE(&psql_columns, cur, list) {
            /* For fields not set, simply skip them */
            ast_cdr_format_var(cdr, cur->name, &value, buf, sizeof(buf), 0);
            if (strcmp(cur->name, "calldate") == 0 && !value) {
                ast_cdr_format_var(cdr, "start", &value, buf, sizeof(buf), 0);
            }
            if (!value) {
                if (cur->notnull && !cur->hasdefault) {
                    /* Field is NOT NULL (but no default), must include it anyway */
                    LENGTHEN_BUF1(strlen(cur->name) + 2);
                    ast_str_append(&sql, 0, "%s\"%s\"", separator, cur->name);
                    LENGTHEN_BUF2(3);
                    ast_str_append(&sql2, 0, "%s''", separator);
                    separator = ", ";
                }
                continue;
            }
 
            LENGTHEN_BUF1(strlen(cur->name) + 2);
            ast_str_append(&sql, 0, "%s\"%s\"", separator, cur->name);
 
            if (strcmp(cur->name, "start") == 0 || strcmp(cur->name, "calldate") == 0) {
                if (strncmp(cur->type, "int", 3) == 0) {
                    LENGTHEN_BUF2(13);
                    ast_str_append(&sql2, 0, "%s%ld", separator, (long) cdr->start.tv_sec);
                } else if (strncmp(cur->type, "float", 5) == 0) {
                    LENGTHEN_BUF2(31);
                    ast_str_append(&sql2, 0, "%s%f", separator, (double)cdr->start.tv_sec + (double)cdr->start.tv_usec / 1000000.0);
                } else {
                    /* char, hopefully */
                    LENGTHEN_BUF2(31);
                    ast_localtime(&cdr->start, &tm, tz);
                    ast_strftime(buf, sizeof(buf), DATE_FORMAT, &tm);
                    ast_str_append(&sql2, 0, "%s%s", separator, buf);
                }
            } else if (strcmp(cur->name, "answer") == 0) {
                if (strncmp(cur->type, "int", 3) == 0) {
                    LENGTHEN_BUF2(13);
                    ast_str_append(&sql2, 0, "%s%ld", separator, (long) cdr->answer.tv_sec);
                } else if (strncmp(cur->type, "float", 5) == 0) {
                    LENGTHEN_BUF2(31);
                    ast_str_append(&sql2, 0, "%s%f", separator, (double)cdr->answer.tv_sec + (double)cdr->answer.tv_usec / 1000000.0);
                } else {
                    /* char, hopefully */
                    LENGTHEN_BUF2(31);
                    ast_localtime(&cdr->answer, &tm, tz);
                    ast_strftime(buf, sizeof(buf), DATE_FORMAT, &tm);
                    ast_str_append(&sql2, 0, "%s%s", separator, buf);
                }
            } else if (strcmp(cur->name, "end") == 0) {
                if (strncmp(cur->type, "int", 3) == 0) {
                    LENGTHEN_BUF2(13);
                    ast_str_append(&sql2, 0, "%s%ld", separator, (long) cdr->end.tv_sec);
                } else if (strncmp(cur->type, "float", 5) == 0) {
                    LENGTHEN_BUF2(31);
                    ast_str_append(&sql2, 0, "%s%f", separator, (double)cdr->end.tv_sec + (double)cdr->end.tv_usec / 1000000.0);
                } else {
                    /* char, hopefully */
                    LENGTHEN_BUF2(31);
                    ast_localtime(&cdr->end, &tm, tz);
                    ast_strftime(buf, sizeof(buf), DATE_FORMAT, &tm);
                    ast_str_append(&sql2, 0, "%s%s", separator, buf);
                }
            } else if (strcmp(cur->name, "duration") == 0 || strcmp(cur->name, "billsec") == 0) {
                if (cur->type[0] == 'i') {
                    /* Get integer, no need to escape anything */
                    ast_cdr_format_var(cdr, cur->name, &value, buf, sizeof(buf), 0);
                    LENGTHEN_BUF2(13);
                    ast_str_append(&sql2, 0, "%s%s", separator, value);
                } else if (strncmp(cur->type, "float", 5) == 0) {
                    struct timeval *when = cur->name[0] == 'd' ? &cdr->start : ast_tvzero(cdr->answer) ? &cdr->end : &cdr->answer;
                    LENGTHEN_BUF2(31);
                    ast_str_append(&sql2, 0, "%s%f", separator, (double) (ast_tvdiff_us(cdr->end, *when) / 1000000.0));
                } else {
                    /* Char field, probably */
                    struct timeval *when = cur->name[0] == 'd' ? &cdr->start : ast_tvzero(cdr->answer) ? &cdr->end : &cdr->answer;
                    LENGTHEN_BUF2(31);
                    ast_str_append(&sql2, 0, "%s'%f'", separator, (double) (ast_tvdiff_us(cdr->end, *when) / 1000000.0));
                }
            } else if (strcmp(cur->name, "disposition") == 0 || strcmp(cur->name, "amaflags") == 0) {
                if (strncmp(cur->type, "int", 3) == 0) {
                    /* Integer, no need to escape anything */
                    ast_cdr_format_var(cdr, cur->name, &value, buf, sizeof(buf), 1);
                    LENGTHEN_BUF2(13);
                    ast_str_append(&sql2, 0, "%s%s", separator, value);
                } else {
                    /* Although this is a char field, there are no special characters in the values for these fields */
                    ast_cdr_format_var(cdr, cur->name, &value, buf, sizeof(buf), 0);
                    LENGTHEN_BUF2(31);
                    ast_str_append(&sql2, 0, "%s'%s'", separator, value);
                }
            } else {
                /* Arbitrary field, could be anything */
                ast_cdr_format_var(cdr, cur->name, &value, buf, sizeof(buf), 0);
                if (strncmp(cur->type, "int", 3) == 0) {
                    long long whatever;
                    if (value && sscanf(value, "%30lld", &whatever) == 1) {
                        LENGTHEN_BUF2(26);
                        ast_str_append(&sql2, 0, "%s%lld", separator, whatever);
                    } else {
                        LENGTHEN_BUF2(2);
                        ast_str_append(&sql2, 0, "%s0", separator);
                    }
                } else if (strncmp(cur->type, "float", 5) == 0) {
                    long double whatever;
                    if (value && sscanf(value, "%30Lf", &whatever) == 1) {
                        LENGTHEN_BUF2(51);
                        ast_str_append(&sql2, 0, "%s%30Lf", separator, whatever);
                    } else {
                        LENGTHEN_BUF2(2);
                        ast_str_append(&sql2, 0, "%s0", separator);
                    }
                /* XXX Might want to handle dates, times, and other misc fields here XXX */
                } else {
                    if (value) {
                        size_t required_size = strlen(value) * 2 + 1;
 
                        /* If our argument size exceeds our buffer, grow it,
                         * as PQescapeStringConn() expects the buffer to be
                         * adequitely sized and does *NOT* do size checking.
                         */
                        if (required_size > bufsize) {
                            char *tmpbuf = ast_realloc(escapebuf, required_size);
 
                            if (!tmpbuf) {
                                AST_RWLIST_UNLOCK(&psql_columns);
                                goto ast_log_cleanup;
                            }
 
                            escapebuf = tmpbuf;
                            bufsize = required_size;
                        }
                        PQescapeStringConn(conn, escapebuf, value, strlen(value), NULL);
                    } else {
                        escapebuf[0] = '\0';
                    }
                    LENGTHEN_BUF2(strlen(escapebuf) + 3);
                    ast_str_append(&sql2, 0, "%s'%s'", separator, escapebuf);
                }
            }
            separator = ", ";
        }
 
        LENGTHEN_BUF1(ast_str_strlen(sql2) + 2);
        AST_RWLIST_UNLOCK(&psql_columns);
        ast_str_append(&sql, 0, ")%s)", ast_str_buffer(sql2));
 
        ast_debug(3, "Inserting a CDR record: [%s]\n", ast_str_buffer(sql));
 
        /* Test to be sure we're still connected... */
        /* If we're connected, and connection is working, good. */
        /* Otherwise, attempt reconnect.  If it fails... sorry... */
        if (PQstatus(conn) == CONNECTION_OK) {
            connected = 1;
        } else {
            ast_log(LOG_ERROR, "Connection was lost... attempting to reconnect.\n");
            PQreset(conn);
            if (PQstatus(conn) == CONNECTION_OK) {
                ast_log(LOG_ERROR, "Connection reestablished.\n");
                connected = 1;
                connect_time = time(NULL);
                records = 0;
            } else {
                pgerror = PQerrorMessage(conn);
                ast_log(LOG_ERROR, "Unable to reconnect to database server %s. Calls will not be logged!\n", pghostname);
                ast_log(LOG_ERROR, "Reason: %s\n", pgerror);
                PQfinish(conn);
                conn = NULL;
                connected = 0;
                goto ast_log_cleanup;
            }
        }
        result = PQexec(conn, ast_str_buffer(sql));
        if (PQresultStatus(result) != PGRES_COMMAND_OK) {
            pgerror = PQresultErrorMessage(result);
            ast_log(LOG_ERROR, "Failed to insert call detail record into database!\n");
            ast_log(LOG_ERROR, "Reason: %s\n", pgerror);
            ast_log(LOG_ERROR, "Connection may have been lost... attempting to reconnect.\n");
            PQreset(conn);
            if (PQstatus(conn) == CONNECTION_OK) {
                ast_log(LOG_ERROR, "Connection reestablished.\n");
                connected = 1;
                connect_time = time(NULL);
                records = 0;
                PQclear(result);
                result = PQexec(conn, ast_str_buffer(sql));
                if (PQresultStatus(result) != PGRES_COMMAND_OK) {
                    pgerror = PQresultErrorMessage(result);
                    ast_log(LOG_ERROR, "HARD ERROR!  Attempted reconnection failed.  DROPPING CALL RECORD!\n");
                    ast_log(LOG_ERROR, "Reason: %s\n", pgerror);
                } else {
                    /* Second try worked out ok */
                    totalrecords++;
                    records++;
                    res = 0;
                }
            }
        } else {
            totalrecords++;
            records++;
            res = 0;
        }
        PQclear(result);
 
        /* Next time, just allocate buffers that are that big to start with. */
        if (ast_str_strlen(sql) > maxsize) {
            maxsize = ast_str_strlen(sql);
        }
        if (ast_str_strlen(sql2) > maxsize2) {
            maxsize2 = ast_str_strlen(sql2);
        }
 
ast_log_cleanup:
        ast_free(escapebuf);
        ast_free(sql);
        ast_free(sql2);
    }
 
    ast_mutex_unlock(&pgsql_lock);
    return res;
}

References ast_cdr::answer, ast_cdr_format_var(), ast_debug, ast_free, ast_localtime(), ast_log, ast_malloc, ast_mutex_lock, ast_mutex_unlock, ast_realloc, AST_RWLIST_RDLOCK, AST_RWLIST_TRAVERSE, AST_RWLIST_UNLOCK, ast_str_append(), ast_str_buffer(), ast_str_create, ast_str_set(), ast_str_strlen(), ast_strftime(), ast_tvdiff_us(), ast_tvzero(), buf, conn, connect_time, connected, DATE_FORMAT, encoding, ast_cdr::end, columns::hasdefault, LENGTHEN_BUF1, LENGTHEN_BUF2, LOG_ERROR, LOG_WARNING, maxsize, maxsize2, columns::name, columns::notnull, NULL, pgdbname, pgdbuser, pghostname, pgpassword, pgsql_lock, pgsql_reconnect(), records, result, ast_cdr::start, table, totalrecords, columns::type, tz, and value.

Referenced by load_module().

pgsql_reconnect()

static void pgsql_reconnect ( void  )

static

Definition at line 170 of file cdr_pgsql.c.

{
    struct ast_str *conn_info = ast_str_create(128);
    if (!conn_info) {
        ast_log(LOG_ERROR, "Failed to allocate memory for connection string.\n");
        return;
    }
 
    if (conn) {
        PQfinish(conn);
        conn = NULL;
    }
 
    if (!ast_strlen_zero(pghostname)) {
        ast_str_append(&conn_info, 0, "host=%s ", pghostname);
    }
    if (!ast_strlen_zero(pgdbport)) {
        ast_str_append(&conn_info, 0, "port=%s ", pgdbport);
    }
    if (!ast_strlen_zero(pgdbname)) {
        ast_str_append(&conn_info, 0, "dbname=%s ", pgdbname);
    }
    if (!ast_strlen_zero(pgdbuser)) {
        ast_str_append(&conn_info, 0, "user=%s ", pgdbuser);
    }
    if (!ast_strlen_zero(pgappname)) {
        ast_str_append(&conn_info, 0, "application_name=%s ", pgappname);
    }
    if (!ast_strlen_zero(pgpassword)) {
        ast_str_append(&conn_info, 0, "password=%s", pgpassword);
    }
    if (ast_str_strlen(conn_info) == 0) {
        ast_log(LOG_ERROR, "Connection string is blank.\n");
        return;
    }
 
    conn = PQconnectdb(ast_str_buffer(conn_info));
    ast_free(conn_info);
}

References ast_free, ast_log, ast_str_append(), ast_str_buffer(), ast_str_create, ast_str_strlen(), ast_strlen_zero(), conn, LOG_ERROR, NULL, pgappname, pgdbname, pgdbport, pgdbuser, pghostname, and pgpassword.

Referenced by config_module(), and pgsql_log().

reload()

static int reload ( void  )

static

Definition at line 805 of file cdr_pgsql.c.

{
    return config_module(1);
}

References config_module().

Referenced by config_module().

unload_module()

static int unload_module ( void  )

static

Definition at line 493 of file cdr_pgsql.c.

{
    if (ast_cdr_unregister(name)) {
        return -1;
    }
 
    ast_cli_unregister_multiple(cdr_pgsql_status_cli, ARRAY_LEN(cdr_pgsql_status_cli));
 
    if (conn) {
        PQfinish(conn);
        conn = NULL;
    }
    ast_free(pghostname);
    ast_free(pgdbname);
    ast_free(pgdbuser);
    ast_free(pgpassword);
    ast_free(pgappname);
    ast_free(pgdbport);
    ast_free(table);
    ast_free(encoding);
    ast_free(tz);
 
    empty_columns();
 
    return 0;
}

References ARRAY_LEN, ast_cdr_unregister(), ast_cli_unregister_multiple(), ast_free, cdr_pgsql_status_cli, conn, empty_columns(), encoding, name, NULL, pgappname, pgdbname, pgdbport, pgdbuser, pghostname, pgpassword, table, and tz.

Referenced by config_module(), and load_module().

Variable Documentation

__mod_info

struct ast_module_info __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "PostgreSQL CDR Backend" , .key = "This paragraph is copyright (c) 2006 by Digium, Inc. \In order for your module to load, it must return this \key via a function called \"key\". Any code which \includes this paragraph must be licensed under the GNU \General Public License version 2 or later (at your \option). In addition to Digium's general reservations \of rights, Digium expressly reserves the right to \allow other parties to license this paragraph under \different terms. Any use of Digium, Inc. trademarks or \logos (including \"Asterisk\" or \"Digium\") without \express written permission of Digium, Inc. is prohibited.\n" , .buildopt_sum = AST_BUILDOPT_SUM, .support_level = AST_MODULE_SUPPORT_EXTENDED, .load = load_module, .unload = unload_module, .reload = reload, .load_pri = AST_MODPRI_CDR_DRIVER, .requires = "cdr", }

static

Definition at line 817 of file cdr_pgsql.c.

ast_module_info

const struct ast_module_info* ast_module_info = &__mod_info

static

Definition at line 817 of file cdr_pgsql.c.

cdr_pgsql_status_cli

struct ast_cli_entry cdr_pgsql_status_cli[]

static

Initial value:

= {
        { .handler =  handle_cdr_pgsql_status , .summary =  "Show connection status of the PostgreSQL CDR driver (cdr_pgsql)" ,},
}

Definition at line 81 of file cdr_pgsql.c.

Referenced by load_module(), and unload_module().

config

const char config[] = "cdr_pgsql.conf"

static

Definition at line 61 of file cdr_pgsql.c.

Referenced by config_module().

conn

PGconn* conn = NULL

static

Definition at line 87 of file cdr_pgsql.c.

Referenced by config_module(), load_mysql_config(), mysql_reconnect(), pgsql_log(), pgsql_reconnect(), and unload_module().

connect_time

time_t connect_time = 0

static

Definition at line 76 of file cdr_pgsql.c.

Referenced by config_module(), handle_cdr_pgsql_status(), and pgsql_log().

connected

int connected = 0

static

Definition at line 73 of file cdr_pgsql.c.

Referenced by config_module(), handle_cdr_pgsql_status(), and pgsql_log().

encoding

char* encoding

static

Definition at line 70 of file cdr_pgsql.c.

Referenced by check_header(), config_module(), custom_prepare(), pgsql_log(), and unload_module().

maxsize

int maxsize = 512

static

Definition at line 75 of file cdr_pgsql.c.

Referenced by pgsql_log().

maxsize2

int maxsize2 = 512

static

Definition at line 75 of file cdr_pgsql.c.

Referenced by pgsql_log().

name

const char name[] = "pgsql"

static

Definition at line 60 of file cdr_pgsql.c.

Referenced by load_module(), and unload_module().

pgappname

char* pgappname

static

Definition at line 67 of file cdr_pgsql.c.

Referenced by config_module(), pgsql_reconnect(), and unload_module().

pgdbname

char* pgdbname

static

Definition at line 64 of file cdr_pgsql.c.

Referenced by config_module(), handle_cdr_pgsql_status(), pgsql_log(), pgsql_reconnect(), and unload_module().

pgdbport

char* pgdbport

static

Definition at line 68 of file cdr_pgsql.c.

Referenced by config_module(), handle_cdr_pgsql_status(), pgsql_reconnect(), and unload_module().

pgdbuser

char* pgdbuser

static

Definition at line 65 of file cdr_pgsql.c.

Referenced by config_module(), handle_cdr_pgsql_status(), pgsql_log(), pgsql_reconnect(), and unload_module().

pghostname

char* pghostname

static

Definition at line 63 of file cdr_pgsql.c.

Referenced by config_module(), handle_cdr_pgsql_status(), pgsql_log(), pgsql_reconnect(), and unload_module().

pgpassword

char* pgpassword

static

Definition at line 66 of file cdr_pgsql.c.

Referenced by config_module(), pgsql_log(), pgsql_reconnect(), and unload_module().

pgsql_lock

ast_mutex_t pgsql_lock = { PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP , NULL, {1, 0} }

static

Definition at line 85 of file cdr_pgsql.c.

Referenced by config_module(), and pgsql_log().

psql_columns

struct psql_columns psql_columns = { .first = NULL, .last = NULL, .lock = { PTHREAD_RWLOCK_INITIALIZER , NULL, {1, 0} } , }

static

records

int records

static

Definition at line 78 of file cdr_pgsql.c.

Referenced by AST_TEST_DEFINE(), config_module(), dns_naptr_sort(), handle_cdr_pgsql_status(), invalid_record_test(), nominal_test(), off_nominal_test(), and pgsql_log().

table

char* table

static

Definition at line 69 of file cdr_pgsql.c.

Referenced by config_module(), handle_cdr_pgsql_status(), pgsql_log(), and unload_module().

totalrecords

int totalrecords = 0

static

Definition at line 77 of file cdr_pgsql.c.

Referenced by handle_cdr_pgsql_status(), and pgsql_log().

tz

char* tz

static

Definition at line 71 of file cdr_pgsql.c.

Referenced by __ast_callerid_generate(), ast_callerid_callwaiting_full_tz_generate(), ast_callerid_full_tz_generate(), ast_get_indication_zone(), ast_tone_zone_ref(), ast_tone_zone_unref(), ast_unregister_indication_country(), ast_var_indications(), ast_var_indications_table(), callerid_full_tz_generate(), callerid_genmsg(), complete_country(), complete_indications(), config_module(), handle_cli_indication_add(), handle_cli_indication_remove(), handle_cli_indication_show(), iax2_datetime(), in_band_indication(), pgsql_log(), and unload_module().