init

pg_include/libpq/auth.h

@@ -0,0 +1,31 @@
+/*-------------------------------------------------------------------------
+ *
+ * auth.h
+ *	  Definitions for network authentication routines
+ *
+ *
+ * Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/libpq/auth.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef AUTH_H
+#define AUTH_H
+
+#include "libpq/libpq-be.h"
+
+extern char *pg_krb_server_keyfile;
+extern char *pg_krb_srvnam;
+extern bool pg_krb_caseins_users;
+extern char *pg_krb_server_hostname;
+extern char *pg_krb_realm;
+
+extern void ClientAuthentication(Port *port);
+
+/* Hook for plugins to get control in ClientAuthentication() */
+typedef void (*ClientAuthentication_hook_type) (Port *, int);
+extern PGDLLIMPORT ClientAuthentication_hook_type ClientAuthentication_hook;
+
+#endif   /* AUTH_H */

pg_include/libpq/be-fsstubs.h

@@ -0,0 +1,60 @@
+/*-------------------------------------------------------------------------
+ *
+ * be-fsstubs.h
+ *
+ *
+ *
+ * Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/libpq/be-fsstubs.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef BE_FSSTUBS_H
+#define BE_FSSTUBS_H
+
+#include "fmgr.h"
+
+/*
+ * LO functions available via pg_proc entries
+ */
+extern Datum lo_import(PG_FUNCTION_ARGS);
+extern Datum lo_import_with_oid(PG_FUNCTION_ARGS);
+extern Datum lo_export(PG_FUNCTION_ARGS);
+
+extern Datum lo_creat(PG_FUNCTION_ARGS);
+extern Datum lo_create(PG_FUNCTION_ARGS);
+
+extern Datum lo_open(PG_FUNCTION_ARGS);
+extern Datum lo_close(PG_FUNCTION_ARGS);
+
+extern Datum loread(PG_FUNCTION_ARGS);
+extern Datum lowrite(PG_FUNCTION_ARGS);
+
+extern Datum lo_lseek(PG_FUNCTION_ARGS);
+extern Datum lo_tell(PG_FUNCTION_ARGS);
+extern Datum lo_unlink(PG_FUNCTION_ARGS);
+extern Datum lo_truncate(PG_FUNCTION_ARGS);
+
+/*
+ * compatibility option for access control
+ */
+extern bool lo_compat_privileges;
+
+/*
+ * These are not fmgr-callable, but are available to C code.
+ * Probably these should have had the underscore-free names,
+ * but too late now...
+ */
+extern int	lo_read(int fd, char *buf, int len);
+extern int	lo_write(int fd, const char *buf, int len);
+
+/*
+ * Cleanup LOs at xact commit/abort
+ */
+extern void AtEOXact_LargeObject(bool isCommit);
+extern void AtEOSubXact_LargeObject(bool isCommit, SubTransactionId mySubid,
+						SubTransactionId parentSubid);
+
+#endif   /* BE_FSSTUBS_H */

pg_include/libpq/crypt.h

@@ -0,0 +1,21 @@
+/*-------------------------------------------------------------------------
+ *
+ * crypt.h
+ *	  Interface to libpq/crypt.c
+ *
+ * Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/libpq/crypt.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef PG_CRYPT_H
+#define PG_CRYPT_H
+
+#include "libpq/libpq-be.h"
+
+extern int md5_crypt_verify(const Port *port, const char *user,
+				 char *client_pass);
+
+#endif

pg_include/libpq/hba.h

@@ -0,0 +1,96 @@
+/*-------------------------------------------------------------------------
+ *
+ * hba.h
+ *	  Interface to hba.c
+ *
+ *
+ * src/include/libpq/hba.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef HBA_H
+#define HBA_H
+
+#include "libpq/pqcomm.h"	/* pgrminclude ignore */	/* needed for NetBSD */
+#include "nodes/pg_list.h"
+
+
+typedef enum UserAuth
+{
+	uaReject,
+	uaImplicitReject,
+	uaKrb5,
+	uaTrust,
+	uaIdent,
+	uaPassword,
+	uaMD5,
+	uaGSS,
+	uaSSPI,
+	uaPAM,
+	uaLDAP,
+	uaCert,
+	uaRADIUS,
+	uaPeer
+} UserAuth;
+
+typedef enum IPCompareMethod
+{
+	ipCmpMask,
+	ipCmpSameHost,
+	ipCmpSameNet,
+	ipCmpAll
+} IPCompareMethod;
+
+typedef enum ConnType
+{
+	ctLocal,
+	ctHost,
+	ctHostSSL,
+	ctHostNoSSL
+} ConnType;
+
+typedef struct HbaLine
+{
+	int			linenumber;
+	ConnType	conntype;
+	List	   *databases;
+	List	   *roles;
+	struct sockaddr_storage addr;
+	struct sockaddr_storage mask;
+	IPCompareMethod ip_cmp_method;
+	char	   *hostname;
+	UserAuth	auth_method;
+
+	char	   *usermap;
+	char	   *pamservice;
+	bool		ldaptls;
+	char	   *ldapserver;
+	int			ldapport;
+	char	   *ldapbinddn;
+	char	   *ldapbindpasswd;
+	char	   *ldapsearchattribute;
+	char	   *ldapbasedn;
+	char	   *ldapprefix;
+	char	   *ldapsuffix;
+	bool		clientcert;
+	char	   *krb_server_hostname;
+	char	   *krb_realm;
+	bool		include_realm;
+	char	   *radiusserver;
+	char	   *radiussecret;
+	char	   *radiusidentifier;
+	int			radiusport;
+} HbaLine;
+
+/* kluge to avoid including libpq/libpq-be.h here */
+typedef struct Port hbaPort;
+
+extern bool load_hba(void);
+extern void load_ident(void);
+extern void hba_getauthmethod(hbaPort *port);
+extern int check_usermap(const char *usermap_name,
+			  const char *pg_role, const char *auth_user,
+			  bool case_sensitive);
+extern bool pg_isblank(const char c);
+
+#endif   /* HBA_H */

pg_include/libpq/ip.h

@@ -0,0 +1,56 @@
+/*-------------------------------------------------------------------------
+ *
+ * ip.h
+ *	  Definitions for IPv6-aware network access.
+ *
+ * These definitions are used by both frontend and backend code.  Be careful
+ * what you include here!
+ *
+ * Copyright (c) 2003-2012, PostgreSQL Global Development Group
+ *
+ * src/include/libpq/ip.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef IP_H
+#define IP_H
+
+#include "getaddrinfo.h"		/* pgrminclude ignore */
+#include "libpq/pqcomm.h"		/* pgrminclude ignore */
+
+
+#ifdef	HAVE_UNIX_SOCKETS
+#define IS_AF_UNIX(fam) ((fam) == AF_UNIX)
+#else
+#define IS_AF_UNIX(fam) (0)
+#endif
+
+typedef void (*PgIfAddrCallback) (struct sockaddr * addr,
+											  struct sockaddr * netmask,
+											  void *cb_data);
+
+extern int pg_getaddrinfo_all(const char *hostname, const char *servname,
+				   const struct addrinfo * hintp,
+				   struct addrinfo ** result);
+extern void pg_freeaddrinfo_all(int hint_ai_family, struct addrinfo * ai);
+
+extern int pg_getnameinfo_all(const struct sockaddr_storage * addr, int salen,
+				   char *node, int nodelen,
+				   char *service, int servicelen,
+				   int flags);
+
+extern int pg_range_sockaddr(const struct sockaddr_storage * addr,
+				  const struct sockaddr_storage * netaddr,
+				  const struct sockaddr_storage * netmask);
+
+extern int pg_sockaddr_cidr_mask(struct sockaddr_storage * mask,
+					  char *numbits, int family);
+
+#ifdef HAVE_IPV6
+extern void pg_promote_v4_to_v6_addr(struct sockaddr_storage * addr);
+extern void pg_promote_v4_to_v6_mask(struct sockaddr_storage * addr);
+#endif
+
+extern int	pg_foreach_ifaddr(PgIfAddrCallback callback, void *cb_data);
+
+#endif   /* IP_H */

pg_include/libpq/libpq-be.h

@@ -0,0 +1,196 @@
+/*-------------------------------------------------------------------------
+ *
+ * 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) 1996-2012, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/libpq/libpq-be.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#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
+
+#ifdef ENABLE_GSS
+#if defined(HAVE_GSSAPI_H)
+#include <gssapi.h>
+#else
+#include <gssapi/gssapi.h>
+#endif   /* HAVE_GSSAPI_H */
+/*
+ * GSSAPI brings in headers that set a lot of things in the global namespace on win32,
+ * that doesn't match the msvc build. It gives a bunch of compiler warnings that we ignore,
+ * but also defines a symbol that simply does not exist. Undefine it again.
+ */
+#ifdef WIN32_ONLY_COMPILER
+#undef HAVE_GETADDRINFO
+#endif
+#endif   /* ENABLE_GSS */
+
+#ifdef ENABLE_SSPI
+#define SECURITY_WIN32
+#if defined(WIN32) && !defined(WIN32_ONLY_COMPILER)
+#include <ntsecapi.h>
+#endif
+#include <security.h>
+#undef SECURITY_WIN32
+
+#ifndef ENABLE_GSS
+/*
+ * Define a fake structure compatible with GSSAPI on Unix.
+ */
+typedef struct
+{
+	void	   *value;
+	int			length;
+} gss_buffer_desc;
+#endif
+#endif   /* ENABLE_SSPI */
+
+#include "datatype/timestamp.h"
+#include "libpq/hba.h"
+#include "libpq/pqcomm.h"
+
+
+typedef enum CAC_state
+{
+	CAC_OK, CAC_STARTUP, CAC_SHUTDOWN, CAC_RECOVERY, CAC_TOOMANY,
+	CAC_WAITBACKUP
+} CAC_state;
+
+
+/*
+ * GSSAPI specific state information
+ */
+#if defined(ENABLE_GSS) | defined(ENABLE_SSPI)
+typedef struct
+{
+	gss_buffer_desc outbuf;		/* GSSAPI output token buffer */
+#ifdef ENABLE_GSS
+	gss_cred_id_t cred;			/* GSSAPI connection cred's */
+	gss_ctx_id_t ctx;			/* GSSAPI connection context */
+	gss_name_t	name;			/* GSSAPI client name */
+#endif
+} pg_gssinfo;
+#endif
+
+/*
+ * 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
+{
+	pgsocket	sock;			/* File descriptor */
+	bool		noblock;		/* is the socket in non-blocking mode? */
+	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_hostname;/* name (not ip addr) of remote host, if
+								 * available */
+	int			remote_hostname_resolv; /* +1 = remote_hostname is known to
+										 * resolve to client's IP address; -1
+										 * = remote_hostname is known NOT to
+										 * resolve to client's IP address; 0 =
+										 * we have not done the forward DNS
+										 * lookup yet */
+	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.
+	 */
+	HbaLine    *hba;
+	char		md5Salt[4];		/* 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.
+	 */
+	TimestampTz SessionStartTime;		/* backend start time */
+
+	/*
+	 * 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. Also, -1 in a default value means we
+	 * were unable to find out the default (getsockopt failed).
+	 */
+	int			default_keepalives_idle;
+	int			default_keepalives_interval;
+	int			default_keepalives_count;
+	int			keepalives_idle;
+	int			keepalives_interval;
+	int			keepalives_count;
+
+#if defined(ENABLE_GSS) || defined(ENABLE_SSPI)
+
+	/*
+	 * If GSSAPI is supported, store GSSAPI information. Otherwise, store a
+	 * NULL pointer to make sure offsets in the struct remain the same.
+	 */
+	pg_gssinfo *gss;
+#else
+	void	   *gss;
+#endif
+
+	/*
+	 * SSL structures (keep these last so that USE_SSL doesn't affect
+	 * locations of other fields)
+	 */
+#ifdef USE_SSL
+	SSL		   *ssl;
+	X509	   *peer;
+	char	   *peer_cn;
+	unsigned long 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 */

pg_include/libpq/libpq-fs.h

@@ -0,0 +1,24 @@
+/*-------------------------------------------------------------------------
+ *
+ * libpq-fs.h
+ *	  definitions for using Inversion file system routines (ie, large objects)
+ *
+ *
+ * Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/libpq/libpq-fs.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef LIBPQ_FS_H
+#define LIBPQ_FS_H
+
+/*
+ *	Read/write mode flags for inversion (large object) calls
+ */
+
+#define INV_WRITE		0x00020000
+#define INV_READ		0x00040000
+
+#endif   /* LIBPQ_FS_H */

pg_include/libpq/libpq.h

@@ -0,0 +1,86 @@
+/*-------------------------------------------------------------------------
+ *
+ * libpq.h
+ *	  POSTGRES LIBPQ buffer structure definitions.
+ *
+ *
+ * Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/libpq/libpq.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef LIBPQ_H
+#define LIBPQ_H
+
+#include <sys/types.h>
+#include <netinet/in.h>
+
+#include "lib/stringinfo.h"
+#include "libpq/libpq-be.h"
+
+/* ----------------
+ * PQArgBlock
+ *		Information (pointer to array of this structure) required
+ *		for the PQfn() call.  (This probably ought to go somewhere else...)
+ * ----------------
+ */
+typedef struct
+{
+	int			len;
+	int			isint;
+	union
+	{
+		int		   *ptr;		/* can't use void (dec compiler barfs)	 */
+		int			integer;
+	}			u;
+} PQArgBlock;
+
+/*
+ * External functions.
+ */
+
+/*
+ * prototypes for functions in pqcomm.c
+ */
+extern int StreamServerPort(int family, char *hostName,
+	unsigned short portNumber, char *unixSocketName, pgsocket ListenSocket[],
+				 int MaxListen);
+extern int	StreamConnection(pgsocket server_fd, Port *port);
+extern void StreamClose(pgsocket sock);
+extern void TouchSocketFile(void);
+extern void pq_init(void);
+extern void pq_comm_reset(void);
+extern int	pq_getbytes(char *s, size_t len);
+extern int	pq_getstring(StringInfo s);
+extern int	pq_getmessage(StringInfo s, int maxlen);
+extern int	pq_getbyte(void);
+extern int	pq_peekbyte(void);
+extern int	pq_getbyte_if_available(unsigned char *c);
+extern int	pq_putbytes(const char *s, size_t len);
+extern int	pq_flush(void);
+extern int	pq_flush_if_writable(void);
+extern bool pq_is_send_pending(void);
+extern int	pq_putmessage(char msgtype, const char *s, size_t len);
+extern void pq_putmessage_noblock(char msgtype, const char *s, size_t len);
+extern void pq_startcopyout(void);
+extern void pq_endcopyout(bool errorAbort);
+
+/*
+ * prototypes for functions in be-secure.c
+ */
+extern char *ssl_cert_file;
+extern char *ssl_key_file;
+extern char *ssl_ca_file;
+extern char *ssl_crl_file;
+
+extern int	secure_initialize(void);
+extern bool secure_loaded_verify_locations(void);
+extern void secure_destroy(void);
+extern int	secure_open_server(Port *port);
+extern void secure_close(Port *port);
+extern ssize_t secure_read(Port *port, void *ptr, size_t len);
+extern ssize_t secure_write(Port *port, void *ptr, size_t len);
+
+#endif   /* LIBPQ_H */

pg_include/libpq/md5.h

@@ -0,0 +1,30 @@
+/*-------------------------------------------------------------------------
+ *
+ * md5.h
+ *	  Interface to libpq/md5.c
+ *
+ * These definitions are needed by both frontend and backend code to work
+ * with MD5-encrypted passwords.
+ *
+ * Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/libpq/md5.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef PG_MD5_H
+#define PG_MD5_H
+
+#define MD5_PASSWD_LEN	35
+
+#define isMD5(passwd)	(strncmp(passwd, "md5", 3) == 0 && \
+						 strlen(passwd) == MD5_PASSWD_LEN)
+
+
+extern bool pg_md5_hash(const void *buff, size_t len, char *hexsum);
+extern bool pg_md5_binary(const void *buff, size_t len, void *outbuf);
+extern bool pg_md5_encrypt(const char *passwd, const char *salt,
+			   size_t salt_len, char *buf);
+
+#endif

pg_include/libpq/pqcomm.h

@@ -0,0 +1,204 @@
+/*-------------------------------------------------------------------------
+ *
+ * pqcomm.h
+ *		Definitions common to frontends and backends.
+ *
+ * NOTE: for historical reasons, this does not correspond to pqcomm.c.
+ * pqcomm.c's routines are declared in libpq.h.
+ *
+ * Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/libpq/pqcomm.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef PQCOMM_H
+#define PQCOMM_H
+
+#include <sys/socket.h>
+#include <netdb.h>
+#ifdef HAVE_SYS_UN_H
+#include <sys/un.h>
+#endif
+#include <netinet/in.h>
+
+#ifdef HAVE_STRUCT_SOCKADDR_STORAGE
+
+#ifndef HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY
+#ifdef HAVE_STRUCT_SOCKADDR_STORAGE___SS_FAMILY
+#define ss_family __ss_family
+#else
+#error struct sockaddr_storage does not provide an ss_family member
+#endif
+#endif
+
+#ifdef HAVE_STRUCT_SOCKADDR_STORAGE___SS_LEN
+#define ss_len __ss_len
+#define HAVE_STRUCT_SOCKADDR_STORAGE_SS_LEN 1
+#endif
+#else							/* !HAVE_STRUCT_SOCKADDR_STORAGE */
+
+/* Define a struct sockaddr_storage if we don't have one. */
+
+struct sockaddr_storage
+{
+	union
+	{
+		struct sockaddr sa;		/* get the system-dependent fields */
+		int64		ss_align;	/* ensures struct is properly aligned */
+		char		ss_pad[128];	/* ensures struct has desired size */
+	}			ss_stuff;
+};
+
+#define ss_family	ss_stuff.sa.sa_family
+/* It should have an ss_len field if sockaddr has sa_len. */
+#ifdef HAVE_STRUCT_SOCKADDR_SA_LEN
+#define ss_len		ss_stuff.sa.sa_len
+#define HAVE_STRUCT_SOCKADDR_STORAGE_SS_LEN 1
+#endif
+#endif   /* HAVE_STRUCT_SOCKADDR_STORAGE */
+
+typedef struct
+{
+	struct sockaddr_storage addr;
+	ACCEPT_TYPE_ARG3 salen;
+} SockAddr;
+
+/* Configure the UNIX socket location for the well known port. */
+
+#define UNIXSOCK_PATH(path, port, sockdir) \
+		snprintf(path, sizeof(path), "%s/.s.PGSQL.%d", \
+				((sockdir) && *(sockdir) != '\0') ? (sockdir) : \
+				DEFAULT_PGSOCKET_DIR, \
+				(port))
+
+/*
+ * The maximum workable length of a socket path is what will fit into
+ * struct sockaddr_un.  This is usually only 100 or so bytes :-(.
+ *
+ * For consistency, always pass a MAXPGPATH-sized buffer to UNIXSOCK_PATH(),
+ * then complain if the resulting string is >= UNIXSOCK_PATH_BUFLEN bytes.
+ * (Because the standard API for getaddrinfo doesn't allow it to complain in
+ * a useful way when the socket pathname is too long, we have to test for
+ * this explicitly, instead of just letting the subroutine return an error.)
+ */
+#define UNIXSOCK_PATH_BUFLEN sizeof(((struct sockaddr_un *) NULL)->sun_path)
+
+
+/*
+ * These manipulate the frontend/backend protocol version number.
+ *
+ * The major number should be incremented for incompatible changes.  The minor
+ * number should be incremented for compatible changes (eg. additional
+ * functionality).
+ *
+ * If a backend supports version m.n of the protocol it must actually support
+ * versions m.[0..n].  Backend support for version m-1 can be dropped after a
+ * `reasonable' length of time.
+ *
+ * A frontend isn't required to support anything other than the current
+ * version.
+ */
+
+#define PG_PROTOCOL_MAJOR(v)	((v) >> 16)
+#define PG_PROTOCOL_MINOR(v)	((v) & 0x0000ffff)
+#define PG_PROTOCOL(m,n)	(((m) << 16) | (n))
+
+/* The earliest and latest frontend/backend protocol version supported. */
+
+#define PG_PROTOCOL_EARLIEST	PG_PROTOCOL(1,0)
+#define PG_PROTOCOL_LATEST		PG_PROTOCOL(3,0)
+
+typedef uint32 ProtocolVersion; /* FE/BE protocol version number */
+
+typedef ProtocolVersion MsgType;
+
+
+/*
+ * Packet lengths are 4 bytes in network byte order.
+ *
+ * The initial length is omitted from the packet layouts appearing below.
+ */
+
+typedef uint32 PacketLen;
+
+
+/*
+ * Old-style startup packet layout with fixed-width fields.  This is used in
+ * protocol 1.0 and 2.0, but not in later versions.  Note that the fields
+ * in this layout are '\0' terminated only if there is room.
+ */
+
+#define SM_DATABASE		64
+#define SM_USER			32
+/* We append database name if db_user_namespace true. */
+#define SM_DATABASE_USER (SM_DATABASE+SM_USER+1)		/* +1 for @ */
+#define SM_OPTIONS		64
+#define SM_UNUSED		64
+#define SM_TTY			64
+
+typedef struct StartupPacket
+{
+	ProtocolVersion protoVersion;		/* Protocol version */
+	char		database[SM_DATABASE];	/* Database name */
+	/* Db_user_namespace appends dbname */
+	char		user[SM_USER];	/* User name */
+	char		options[SM_OPTIONS];	/* Optional additional args */
+	char		unused[SM_UNUSED];		/* Unused */
+	char		tty[SM_TTY];	/* Tty for debug output */
+} StartupPacket;
+
+extern bool Db_user_namespace;
+
+/*
+ * In protocol 3.0 and later, the startup packet length is not fixed, but
+ * we set an arbitrary limit on it anyway.	This is just to prevent simple
+ * denial-of-service attacks via sending enough data to run the server
+ * out of memory.
+ */
+#define MAX_STARTUP_PACKET_LENGTH 10000
+
+
+/* These are the authentication request codes sent by the backend. */
+
+#define AUTH_REQ_OK			0	/* User is authenticated  */
+#define AUTH_REQ_KRB4		1	/* Kerberos V4. Not supported any more. */
+#define AUTH_REQ_KRB5		2	/* Kerberos V5 */
+#define AUTH_REQ_PASSWORD	3	/* Password */
+#define AUTH_REQ_CRYPT		4	/* crypt password. Not supported any more. */
+#define AUTH_REQ_MD5		5	/* md5 password */
+#define AUTH_REQ_SCM_CREDS	6	/* transfer SCM credentials */
+#define AUTH_REQ_GSS		7	/* GSSAPI without wrap() */
+#define AUTH_REQ_GSS_CONT	8	/* Continue GSS exchanges */
+#define AUTH_REQ_SSPI		9	/* SSPI negotiate without wrap() */
+
+typedef uint32 AuthRequest;
+
+
+/*
+ * A client can also send a cancel-current-operation request to the postmaster.
+ * This is uglier than sending it directly to the client's backend, but it
+ * avoids depending on out-of-band communication facilities.
+ *
+ * The cancel request code must not match any protocol version number
+ * we're ever likely to use.  This random choice should do.
+ */
+#define CANCEL_REQUEST_CODE PG_PROTOCOL(1234,5678)
+
+typedef struct CancelRequestPacket
+{
+	/* Note that each field is stored in network byte order! */
+	MsgType		cancelRequestCode;		/* code to identify a cancel request */
+	uint32		backendPID;		/* PID of client's backend */
+	uint32		cancelAuthCode; /* secret key to authorize cancel */
+} CancelRequestPacket;
+
+
+/*
+ * A client can also start by sending a SSL negotiation request, to get a
+ * secure channel.
+ */
+#define NEGOTIATE_SSL_CODE PG_PROTOCOL(1234,5679)
+
+#endif   /* PQCOMM_H */

pg_include/libpq/pqformat.h

@@ -0,0 +1,49 @@
+/*-------------------------------------------------------------------------
+ *
+ * pqformat.h
+ *		Definitions for formatting and parsing frontend/backend messages
+ *
+ * Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/libpq/pqformat.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef PQFORMAT_H
+#define PQFORMAT_H
+
+#include "lib/stringinfo.h"
+
+extern void pq_beginmessage(StringInfo buf, char msgtype);
+extern void pq_sendbyte(StringInfo buf, int byt);
+extern void pq_sendbytes(StringInfo buf, const char *data, int datalen);
+extern void pq_sendcountedtext(StringInfo buf, const char *str, int slen,
+				   bool countincludesself);
+extern void pq_sendtext(StringInfo buf, const char *str, int slen);
+extern void pq_sendstring(StringInfo buf, const char *str);
+extern void pq_send_ascii_string(StringInfo buf, const char *str);
+extern void pq_sendint(StringInfo buf, int i, int b);
+extern void pq_sendint64(StringInfo buf, int64 i);
+extern void pq_sendfloat4(StringInfo buf, float4 f);
+extern void pq_sendfloat8(StringInfo buf, float8 f);
+extern void pq_endmessage(StringInfo buf);
+
+extern void pq_begintypsend(StringInfo buf);
+extern bytea *pq_endtypsend(StringInfo buf);
+
+extern void pq_puttextmessage(char msgtype, const char *str);
+extern void pq_putemptymessage(char msgtype);
+
+extern int	pq_getmsgbyte(StringInfo msg);
+extern unsigned int pq_getmsgint(StringInfo msg, int b);
+extern int64 pq_getmsgint64(StringInfo msg);
+extern float4 pq_getmsgfloat4(StringInfo msg);
+extern float8 pq_getmsgfloat8(StringInfo msg);
+extern const char *pq_getmsgbytes(StringInfo msg, int datalen);
+extern void pq_copymsgbytes(StringInfo msg, char *buf, int datalen);
+extern char *pq_getmsgtext(StringInfo msg, int rawbytes, int *nbytes);
+extern const char *pq_getmsgstring(StringInfo msg);
+extern void pq_getmsgend(StringInfo msg);
+
+#endif   /* PQFORMAT_H */

pg_include/libpq/pqsignal.h

@@ -0,0 +1,51 @@
+/*-------------------------------------------------------------------------
+ *
+ * pqsignal.h
+ *	  prototypes for the reliable BSD-style signal(2) routine.
+ *
+ *
+ * Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/libpq/pqsignal.h
+ *
+ * NOTES
+ *	  This shouldn't be in libpq, but the monitor and some other
+ *	  things need it...
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef PQSIGNAL_H
+#define PQSIGNAL_H
+
+#include <signal.h>
+
+#ifdef HAVE_SIGPROCMASK
+extern sigset_t UnBlockSig,
+			BlockSig,
+			StartupBlockSig;
+
+#define PG_SETMASK(mask)	sigprocmask(SIG_SETMASK, mask, NULL)
+#else							/* not HAVE_SIGPROCMASK */
+extern int	UnBlockSig,
+			BlockSig,
+			StartupBlockSig;
+
+#ifndef WIN32
+#define PG_SETMASK(mask)	sigsetmask(*((int*)(mask)))
+#else
+#define PG_SETMASK(mask)		pqsigsetmask(*((int*)(mask)))
+int			pqsigsetmask(int mask);
+#endif
+
+#define sigaddset(set, signum)	(*(set) |= (sigmask(signum)))
+#define sigdelset(set, signum)	(*(set) &= ~(sigmask(signum)))
+#endif   /* not HAVE_SIGPROCMASK */
+
+typedef void (*pqsigfunc) (int);
+
+extern void pqinitmask(void);
+
+extern pqsigfunc pqsignal(int signo, pqsigfunc func);
+
+#endif   /* PQSIGNAL_H */