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/*-------------------------------------------------------------------------
*
* libpq_be.h
* This file contains definitions for structures and externs used
* by the postmaster during client authentication.
*
* Note that this is backend-internal and is NOT exported to clients.
* Structs that need to be client-visible are in pqcomm.h.
*
*
* Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/libpq/libpq-be.h,v 1.50 2005/07/30 15:17:25 momjian Exp $
*
*-------------------------------------------------------------------------
*/
#ifndef LIBPQ_BE_H
#define LIBPQ_BE_H
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#ifdef USE_SSL
#include <openssl/ssl.h>
#include <openssl/err.h>
#endif
#ifdef HAVE_NETINET_TCP_H
#include <netinet/tcp.h>
#endif
#include "libpq/hba.h"
#include "libpq/pqcomm.h"
typedef enum CAC_state
{
CAC_OK, CAC_STARTUP, CAC_SHUTDOWN, CAC_RECOVERY, CAC_TOOMANY
} CAC_state;
/*
* This is used by the postmaster in its communication with frontends. It
* contains all state information needed during this communication before the
* backend is run. The Port structure is kept in malloc'd memory and is
* still available when a backend is running (see MyProcPort). The data
* it points to must also be malloc'd, or else palloc'd in TopMemoryContext,
* so that it survives into PostgresMain execution!
*/
typedef struct Port
{
int sock; /* File descriptor */
ProtocolVersion proto; /* FE/BE protocol version */
SockAddr laddr; /* local addr (postmaster) */
SockAddr raddr; /* remote addr (client) */
char *remote_host; /* name (or ip addr) of remote host */
char *remote_port; /* text rep of remote port */
CAC_state canAcceptConnections; /* postmaster connection status */
/*
* Information that needs to be saved from the startup packet and
* passed into backend execution. "char *" fields are NULL if not
* set. guc_options points to a List of alternating option names and
* values.
*/
char *database_name;
char *user_name;
char *cmdline_options;
List *guc_options;
/*
* Information that needs to be held during the authentication cycle.
*/
UserAuth auth_method;
char *auth_arg;
char md5Salt[4]; /* Password salt */
char cryptSalt[2]; /* Password salt */
/*
* Information that really has no business at all being in struct
* Port, but since it gets used by elog.c in the same way as
* database_name and other members of this struct, we may as well keep
* it here.
*/
const char *commandTag; /* current command tag */
struct timeval session_start; /* for session duration logging */
/*
* SSL structures
*/
#ifdef USE_SSL
SSL *ssl;
X509 *peer;
char peer_dn[128 + 1];
char peer_cn[SM_USER + 1];
unsigned long count;
#endif
/*
* TCP keepalive settings;
* default values are 0 if AF_UNIX or not yet known;
* current values are 0 if AF_UNIX or using the default.
*/
#ifdef TCP_KEEPIDLE
int default_keepalives_idle;
int keepalives_idle;
#endif
#ifdef TCP_KEEPINTVL
int default_keepalives_interval;
int keepalives_interval;
#endif
#ifdef TCP_KEEPCNT
int default_keepalives_count;
int keepalives_count;
#endif
} Port;
extern ProtocolVersion FrontendProtocol;
/* TCP keepalives configuration. These are no-ops on an AF_UNIX socket. */
extern int pq_getkeepalivesidle(Port *port);
extern int pq_getkeepalivesinterval(Port *port);
extern int pq_getkeepalivescount(Port *port);
extern int pq_setkeepalivesidle(int idle, Port *port);
extern int pq_setkeepalivesinterval(int interval, Port *port);
extern int pq_setkeepalivescount(int count, Port *port);
#endif /* LIBPQ_BE_H */
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