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Diffstat (limited to 'libpq/postgresql/libpq/pqcomm.h')
| -rw-r--r-- | libpq/postgresql/libpq/pqcomm.h | 206 |
1 files changed, 0 insertions, 206 deletions
diff --git a/libpq/postgresql/libpq/pqcomm.h b/libpq/postgresql/libpq/pqcomm.h deleted file mode 100644 index 1d063d1..0000000 --- a/libpq/postgresql/libpq/pqcomm.h +++ /dev/null @@ -1,206 +0,0 @@ -/*------------------------------------------------------------------------- - * - * 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) 1996-2016, 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. Not supported any more. */ -#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() */ -#define AUTH_REQ_SASL 10 /* SASL authentication. Not supported before - * libpq version 10. */ - -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 */ |