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src/include/libpq/libpq.h
178 строк
5 KB
Tom Lane
Declare load_hosts() as returning HostsFileLoadResult.
05 май 2026, 01:33
05 май 2026, 01:33
93da297
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/*------------------------------------------------------------------------- * * libpq.h * POSTGRES LIBPQ buffer structure definitions. * * * Portions Copyright (c) 1996-2026, 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 <netinet/in.h> #include "lib/stringinfo.h" #include "libpq/libpq-be.h" /* avoid including waiteventset.h */ typedef struct WaitEventSet WaitEventSet; /* * Callers of pq_getmessage() must supply a maximum expected message size. * By convention, if there's not any specific reason to use another value, * use PQ_SMALL_MESSAGE_LIMIT for messages that shouldn't be too long, and * PQ_LARGE_MESSAGE_LIMIT for messages that can be long. */ #define PQ_SMALL_MESSAGE_LIMIT 10000 #define PQ_LARGE_MESSAGE_LIMIT (MaxAllocSize - 1) typedef struct { void (*comm_reset) (void); int (*flush) (void); int (*flush_if_writable) (void); bool (*is_send_pending) (void); int (*putmessage) (char msgtype, const char *s, size_t len); void (*putmessage_noblock) (char msgtype, const char *s, size_t len); } PQcommMethods; extern const PGDLLIMPORT PQcommMethods *PqCommMethods; #define pq_comm_reset() (PqCommMethods->comm_reset()) #define pq_flush() (PqCommMethods->flush()) #define pq_flush_if_writable() (PqCommMethods->flush_if_writable()) #define pq_is_send_pending() (PqCommMethods->is_send_pending()) #define pq_putmessage(msgtype, s, len) \ (PqCommMethods->putmessage(msgtype, s, len)) #define pq_putmessage_noblock(msgtype, s, len) \ (PqCommMethods->putmessage_noblock(msgtype, s, len)) /* * External functions. */ /* * prototypes for functions in pqcomm.c */ extern PGDLLIMPORT WaitEventSet *FeBeWaitSet; #define FeBeWaitSetSocketPos 0 #define FeBeWaitSetLatchPos 1 #define FeBeWaitSetNEvents 3 extern int ListenServerPort(int family, const char *hostName, unsigned short portNumber, const char *unixSocketDir, pgsocket ListenSockets[], int *NumListenSockets, int MaxListen); extern int AcceptConnection(pgsocket server_fd, ClientSocket *client_sock); extern void TouchSocketFiles(void); extern void RemoveSocketFiles(void); extern Port *pq_init(ClientSocket *client_sock); extern int pq_getbytes(void *b, size_t len); extern void pq_startmsgread(void); extern void pq_endmsgread(void); extern bool pq_is_reading_msg(void); 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 ssize_t pq_buffer_remaining_data(void); extern int pq_putmessage_v2(char msgtype, const char *s, size_t len); extern bool pq_check_connection(void); /* * prototypes for functions in be-secure.c */ extern int secure_initialize(bool isServerStart); 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, const void *ptr, size_t len); extern ssize_t secure_raw_read(Port *port, void *ptr, size_t len); extern ssize_t secure_raw_write(Port *port, const void *ptr, size_t len); /* * declarations for variables defined in be-secure.c */ extern PGDLLIMPORT char *ssl_library; extern PGDLLIMPORT char *ssl_ca_file; extern PGDLLIMPORT char *ssl_cert_file; extern PGDLLIMPORT char *ssl_crl_file; extern PGDLLIMPORT char *ssl_crl_dir; extern PGDLLIMPORT char *ssl_key_file; extern PGDLLIMPORT int ssl_min_protocol_version; extern PGDLLIMPORT int ssl_max_protocol_version; extern PGDLLIMPORT char *ssl_passphrase_command; extern PGDLLIMPORT bool ssl_passphrase_command_supports_reload; extern PGDLLIMPORT char *ssl_dh_params_file; extern PGDLLIMPORT bool ssl_sni; extern PGDLLIMPORT char *SSLCipherSuites; extern PGDLLIMPORT char *SSLCipherList; extern PGDLLIMPORT char *SSLECDHCurve; extern PGDLLIMPORT bool SSLPreferServerCiphers; #ifdef USE_SSL extern PGDLLIMPORT bool ssl_loaded_verify_locations; #endif #ifdef USE_SSL #define SSL_LIBRARY "OpenSSL" #else #define SSL_LIBRARY "" #endif #ifdef USE_OPENSSL #define DEFAULT_SSL_CIPHERS "HIGH:MEDIUM:+3DES:!aNULL" #else #define DEFAULT_SSL_CIPHERS "none" #endif #ifdef USE_SSL #define DEFAULT_SSL_GROUPS "X25519:prime256v1" #else #define DEFAULT_SSL_GROUPS "none" #endif /* * prototypes for functions in be-secure-gssapi.c */ #ifdef ENABLE_GSS extern ssize_t secure_open_gssapi(Port *port); #endif enum ssl_protocol_versions { PG_TLS_ANY = 0, PG_TLS1_VERSION, PG_TLS1_1_VERSION, PG_TLS1_2_VERSION, PG_TLS1_3_VERSION, }; typedef enum HostsFileLoadResult { HOSTSFILE_LOAD_OK = 0, HOSTSFILE_LOAD_FAILED, HOSTSFILE_EMPTY, HOSTSFILE_MISSING, HOSTSFILE_DISABLED, } HostsFileLoadResult; /* * prototypes for functions in be-secure-common.c */ extern int run_ssl_passphrase_command(const char *cmd, const char *prompt, bool is_server_start, char *buf, int size); extern bool check_ssl_key_file_permissions(const char *ssl_key_file, bool isServerStart); extern HostsFileLoadResult load_hosts(List **hosts, char **err_msg); #endif /* LIBPQ_H */