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blue-lemon0104
196
pg_include/libpq/libpq-be.h
Executable file
196
pg_include/libpq/libpq-be.h
Executable file
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/*-------------------------------------------------------------------------
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*
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* libpq_be.h
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* This file contains definitions for structures and externs used
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* by the postmaster during client authentication.
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*
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* Note that this is backend-internal and is NOT exported to clients.
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* Structs that need to be client-visible are in pqcomm.h.
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*
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*
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* Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* src/include/libpq/libpq-be.h
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef LIBPQ_BE_H
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#define LIBPQ_BE_H
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#ifdef HAVE_SYS_TIME_H
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#include <sys/time.h>
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#endif
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#ifdef USE_SSL
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#include <openssl/ssl.h>
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#include <openssl/err.h>
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#endif
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#ifdef HAVE_NETINET_TCP_H
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#include <netinet/tcp.h>
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#endif
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#ifdef ENABLE_GSS
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#if defined(HAVE_GSSAPI_H)
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#include <gssapi.h>
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#else
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#include <gssapi/gssapi.h>
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#endif /* HAVE_GSSAPI_H */
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/*
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* GSSAPI brings in headers that set a lot of things in the global namespace on win32,
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* that doesn't match the msvc build. It gives a bunch of compiler warnings that we ignore,
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* but also defines a symbol that simply does not exist. Undefine it again.
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*/
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#ifdef WIN32_ONLY_COMPILER
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#undef HAVE_GETADDRINFO
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#endif
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#endif /* ENABLE_GSS */
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#ifdef ENABLE_SSPI
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#define SECURITY_WIN32
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#if defined(WIN32) && !defined(WIN32_ONLY_COMPILER)
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#include <ntsecapi.h>
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#endif
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#include <security.h>
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#undef SECURITY_WIN32
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#ifndef ENABLE_GSS
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/*
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* Define a fake structure compatible with GSSAPI on Unix.
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*/
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typedef struct
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{
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void *value;
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int length;
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} gss_buffer_desc;
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#endif
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#endif /* ENABLE_SSPI */
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#include "datatype/timestamp.h"
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#include "libpq/hba.h"
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#include "libpq/pqcomm.h"
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typedef enum CAC_state
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{
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CAC_OK, CAC_STARTUP, CAC_SHUTDOWN, CAC_RECOVERY, CAC_TOOMANY,
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CAC_WAITBACKUP
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} CAC_state;
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/*
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* GSSAPI specific state information
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*/
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#if defined(ENABLE_GSS) | defined(ENABLE_SSPI)
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typedef struct
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{
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gss_buffer_desc outbuf; /* GSSAPI output token buffer */
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#ifdef ENABLE_GSS
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gss_cred_id_t cred; /* GSSAPI connection cred's */
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gss_ctx_id_t ctx; /* GSSAPI connection context */
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gss_name_t name; /* GSSAPI client name */
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#endif
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} pg_gssinfo;
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#endif
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/*
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* This is used by the postmaster in its communication with frontends. It
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* contains all state information needed during this communication before the
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* backend is run. The Port structure is kept in malloc'd memory and is
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* still available when a backend is running (see MyProcPort). The data
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* it points to must also be malloc'd, or else palloc'd in TopMemoryContext,
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* so that it survives into PostgresMain execution!
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*/
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typedef struct Port
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{
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pgsocket sock; /* File descriptor */
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bool noblock; /* is the socket in non-blocking mode? */
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ProtocolVersion proto; /* FE/BE protocol version */
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SockAddr laddr; /* local addr (postmaster) */
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SockAddr raddr; /* remote addr (client) */
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char *remote_host; /* name (or ip addr) of remote host */
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char *remote_hostname;/* name (not ip addr) of remote host, if
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* available */
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int remote_hostname_resolv; /* +1 = remote_hostname is known to
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* resolve to client's IP address; -1
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* = remote_hostname is known NOT to
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* resolve to client's IP address; 0 =
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* we have not done the forward DNS
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* lookup yet */
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char *remote_port; /* text rep of remote port */
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CAC_state canAcceptConnections; /* postmaster connection status */
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/*
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* Information that needs to be saved from the startup packet and passed
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* into backend execution. "char *" fields are NULL if not set.
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* guc_options points to a List of alternating option names and values.
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*/
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char *database_name;
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char *user_name;
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char *cmdline_options;
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List *guc_options;
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/*
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* Information that needs to be held during the authentication cycle.
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*/
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HbaLine *hba;
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char md5Salt[4]; /* Password salt */
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/*
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* Information that really has no business at all being in struct Port,
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* but since it gets used by elog.c in the same way as database_name and
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* other members of this struct, we may as well keep it here.
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*/
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TimestampTz SessionStartTime; /* backend start time */
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/*
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* TCP keepalive settings.
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*
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* default values are 0 if AF_UNIX or not yet known; current values are 0
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* if AF_UNIX or using the default. Also, -1 in a default value means we
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* were unable to find out the default (getsockopt failed).
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*/
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int default_keepalives_idle;
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int default_keepalives_interval;
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int default_keepalives_count;
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int keepalives_idle;
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int keepalives_interval;
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int keepalives_count;
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#if defined(ENABLE_GSS) || defined(ENABLE_SSPI)
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/*
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* If GSSAPI is supported, store GSSAPI information. Otherwise, store a
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* NULL pointer to make sure offsets in the struct remain the same.
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*/
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pg_gssinfo *gss;
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#else
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void *gss;
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#endif
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/*
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* SSL structures (keep these last so that USE_SSL doesn't affect
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* locations of other fields)
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*/
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#ifdef USE_SSL
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SSL *ssl;
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X509 *peer;
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char *peer_cn;
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unsigned long count;
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#endif
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} Port;
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extern ProtocolVersion FrontendProtocol;
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/* TCP keepalives configuration. These are no-ops on an AF_UNIX socket. */
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extern int pq_getkeepalivesidle(Port *port);
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extern int pq_getkeepalivesinterval(Port *port);
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extern int pq_getkeepalivescount(Port *port);
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extern int pq_setkeepalivesidle(int idle, Port *port);
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extern int pq_setkeepalivesinterval(int interval, Port *port);
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extern int pq_setkeepalivescount(int count, Port *port);
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#endif /* LIBPQ_BE_H */
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