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.
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 = ASTERISK_GPL_KEY , .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 = AST_MUTEX_INIT_VALUE
static struct psql_columns	psql_columns = AST_RWLIST_HEAD_INIT_VALUE
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 buffer, if necessary */ \
                if (ast_str_strlen(var_sql) + size + 1 > ast_str_size(var_sql)) { \
                    if (ast_str_make_space(&var_sql, ((ast_str_size(var_sql) + size + 3) / 512 + 1) * 512) != 0) { \
                        ast_log(LOG_ERROR, "Unable to allocate sufficient memory. Insert CDR '%s:%s' failed.\n", pghostname, table); \
                        ast_free(sql); \
                        ast_free(sql2); \
                        AST_RWLIST_UNLOCK(&psql_columns); \
                        ast_mutex_unlock(&pgsql_lock); \
                        return -1; \
                    } \
                } \
            } while (0)

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, 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
                         * adequately 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 _pgsql_exec(), config_module(), destroy_pgsql(), parse_config(), pgsql_log(), realtime_multi_pgsql(), realtime_pgsql(), store_pgsql(), update2_pgsql(), and update_pgsql().

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 = ASTERISK_GPL_KEY , .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.

                                                     {
        AST_CLI_DEFINE(handle_cdr_pgsql_status, "Show connection status of the PostgreSQL CDR driver (cdr_pgsql)"),
};

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 __ast_read(), __ast_request_and_dial(), agent_login_channel_config(), agent_request_exec(), ari_channels_handle_originate_with_id(), ast_channel_connected_line_sub(), ast_channel_queue_connected_line_update(), ast_channel_set_connected_line(), ast_channel_update_connected_line(), ast_connected_line_build_data(), ast_connected_line_parse_data(), ast_party_connected_line_collect_caller(), bridge_reconfigured_connected_line_update(), channel_do_masquerade(), config_module(), connectedline_write(), dial_exec_full(), do_forward(), handle_cdr_pgsql_status(), indicate_connected_line(), launch_monitor_thread(), onAlerting(), onCallEstablished(), onProgress(), pbx_outgoing_attempt(), pgsql_log(), queue_connected_line_update(), send_colp_to_agent(), socket_process_helper(), update_initial_connected_line(), wait_for_answer(), wait_for_answer(), and wait_for_winner().

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 = AST_MUTEX_INIT_VALUE

static

Definition at line 85 of file cdr_pgsql.c.

Referenced by config_module(), and pgsql_log().

psql_columns

struct psql_columns psql_columns = AST_RWLIST_HEAD_INIT_VALUE

static

records

int records

static

Definition at line 78 of file cdr_pgsql.c.

Referenced by AST_TEST_DEFINE(), AST_TEST_DEFINE(), AST_TEST_DEFINE(), AST_TEST_DEFINE(), AST_TEST_DEFINE(), AST_TEST_DEFINE(), AST_TEST_DEFINE(), AST_TEST_DEFINE(), AST_TEST_DEFINE(), AST_TEST_DEFINE(), AST_TEST_DEFINE(), AST_TEST_DEFINE(), AST_TEST_DEFINE(), AST_TEST_DEFINE(), 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().