1996-07-09 08:22:35 +02:00
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/*-------------------------------------------------------------------------
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*
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1999-02-14 00:22:53 +01:00
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* libpq.h
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1997-09-07 07:04:48 +02:00
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* POSTGRES LIBPQ buffer structure definitions.
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1996-07-09 08:22:35 +02:00
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*
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*
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2014-01-07 22:05:30 +01:00
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* Portions Copyright (c) 1996-2014, PostgreSQL Global Development Group
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2000-01-26 06:58:53 +01:00
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* Portions Copyright (c) 1994, Regents of the University of California
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1996-07-09 08:22:35 +02:00
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*
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2010-09-20 22:08:53 +02:00
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* src/include/libpq/libpq.h
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1996-07-09 08:22:35 +02:00
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef LIBPQ_H
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#define LIBPQ_H
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1998-01-26 02:49:19 +01:00
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#include <sys/types.h>
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1998-01-26 02:42:53 +01:00
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#include <netinet/in.h>
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1999-08-31 06:26:40 +02:00
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#include "lib/stringinfo.h"
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1998-01-26 02:42:53 +01:00
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#include "libpq/libpq-be.h"
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1996-10-23 09:42:13 +02:00
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1996-07-09 08:22:35 +02:00
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/* ----------------
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1999-05-25 18:15:34 +02:00
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* PQArgBlock
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1997-09-07 07:04:48 +02:00
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* Information (pointer to array of this structure) required
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2000-07-08 05:04:41 +02:00
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* for the PQfn() call. (This probably ought to go somewhere else...)
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1996-07-09 08:22:35 +02:00
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* ----------------
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*/
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1997-09-07 07:04:48 +02:00
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typedef struct
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{
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1997-09-08 04:41:22 +02:00
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int len;
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int isint;
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1997-09-07 07:04:48 +02:00
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union
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{
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1997-09-08 04:41:22 +02:00
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int *ptr; /* can't use void (dec compiler barfs) */
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int integer;
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} u;
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1997-09-08 23:56:23 +02:00
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} PQArgBlock;
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1996-07-09 08:22:35 +02:00
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/*
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* External functions.
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*/
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1997-09-07 07:04:48 +02:00
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/*
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* prototypes for functions in pqcomm.c
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1996-07-09 08:22:35 +02:00
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*/
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2013-05-29 22:58:43 +02:00
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extern int StreamServerPort(int family, char *hostName,
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2012-08-10 23:26:44 +02:00
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unsigned short portNumber, char *unixSocketDir,
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pgsocket ListenSocket[], int MaxListen);
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2010-01-10 15:16:08 +01:00
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extern int StreamConnection(pgsocket server_fd, Port *port);
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extern void StreamClose(pgsocket sock);
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2012-08-10 23:26:44 +02:00
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extern void TouchSocketFiles(void);
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1999-04-25 05:19:27 +02:00
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extern void pq_init(void);
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2004-09-26 02:26:28 +02:00
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extern void pq_comm_reset(void);
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1999-04-25 05:19:27 +02:00
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extern int pq_getbytes(char *s, size_t len);
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2003-04-19 02:02:30 +02:00
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extern int pq_getstring(StringInfo s);
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extern int pq_getmessage(StringInfo s, int maxlen);
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2001-12-04 20:40:17 +01:00
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extern int pq_getbyte(void);
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1999-04-25 05:19:27 +02:00
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extern int pq_peekbyte(void);
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2010-01-15 10:19:10 +01:00
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extern int pq_getbyte_if_available(unsigned char *c);
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1999-04-25 05:19:27 +02:00
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extern int pq_putbytes(const char *s, size_t len);
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extern int pq_flush(void);
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2011-03-30 09:10:32 +02:00
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extern int pq_flush_if_writable(void);
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2011-04-10 17:42:00 +02:00
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extern bool pq_is_send_pending(void);
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1999-04-25 05:19:27 +02:00
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extern int pq_putmessage(char msgtype, const char *s, size_t len);
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2011-03-30 09:10:32 +02:00
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extern void pq_putmessage_noblock(char msgtype, const char *s, size_t len);
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1999-05-25 18:15:34 +02:00
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extern void pq_startcopyout(void);
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extern void pq_endcopyout(bool errorAbort);
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1999-01-23 23:27:29 +01:00
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2003-04-19 02:02:30 +02:00
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/*
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* prototypes for functions in be-secure.c
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*/
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2012-02-22 22:40:46 +01:00
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extern char *ssl_cert_file;
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extern char *ssl_key_file;
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extern char *ssl_ca_file;
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extern char *ssl_crl_file;
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2003-08-04 02:43:34 +02:00
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extern int secure_initialize(void);
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2008-11-20 10:29:36 +01:00
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extern bool secure_loaded_verify_locations(void);
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2003-08-04 02:43:34 +02:00
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extern void secure_destroy(void);
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extern int secure_open_server(Port *port);
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extern void secure_close(Port *port);
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extern ssize_t secure_read(Port *port, void *ptr, size_t len);
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extern ssize_t secure_write(Port *port, void *ptr, size_t len);
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Break out OpenSSL-specific code to separate files.
This refactoring is in preparation for adding support for other SSL
implementations, with no user-visible effects. There are now two #defines,
USE_OPENSSL which is defined when building with OpenSSL, and USE_SSL which
is defined when building with any SSL implementation. Currently, OpenSSL is
the only implementation so the two #defines go together, but USE_SSL is
supposed to be used for implementation-independent code.
The libpq SSL code is changed to use a custom BIO, which does all the raw
I/O, like we've been doing in the backend for a long time. That makes it
possible to use MSG_NOSIGNAL to block SIGPIPE when using SSL, which avoids
a couple of syscall for each send(). Probably doesn't make much performance
difference in practice - the SSL encryption is expensive enough to mask the
effect - but it was a natural result of this refactoring.
Based on a patch by Martijn van Oosterhout from 2006. Briefly reviewed by
Alvaro Herrera, Andreas Karlsson, Jeff Janes.
2014-08-11 10:54:19 +02:00
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extern ssize_t secure_raw_read(Port *port, void *ptr, size_t len);
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extern ssize_t secure_raw_write(Port *port, const void *ptr, size_t len);
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extern bool ssl_loaded_verify_locations;
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/* GUCs */
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extern char *SSLCipherSuites;
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extern char *SSLECDHCurve;
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extern bool SSLPreferServerCiphers;
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2003-04-19 02:02:30 +02:00
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2001-11-05 18:46:40 +01:00
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#endif /* LIBPQ_H */
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