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+ /*
+ ** SA - OSSP Socket Abstraction Library
+ ** Copyright (c) 2001 Ralf S. Engelschall <rse@engelschall.com>
+ ** Copyright (c) 2001 The OSSP Project <http://www.ossp.org/>
+ ** Copyright (c) 2001 Cable & Wireless Deutschland <http://www.cw.com/de/>
+ **
+ ** This file is part of OSSP SA, a socket abstraction library which
+ ** can be found at http://www.ossp.org/pkg/sa/.
+ **
+ ** Permission to use, copy, modify, and distribute this software for
+ ** any purpose with or without fee is hereby granted, provided that
+ ** the above copyright notice and this permission notice appear in all
+ ** copies.
+ **
+ ** THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
+ ** WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ ** MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ ** IN NO EVENT SHALL THE AUTHORS AND COPYRIGHT HOLDERS AND THEIR
+ ** CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ ** USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ ** ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ ** OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ ** OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ ** SUCH DAMAGE.
+ **
+ ** sa.h: socket abstraction API
+ */
+
+ #ifndef __SA_H__
+ #define __SA_H__
+
+ /* system definitions of "size_t", "socklen_t", "struct sockaddr *" */
+ #include <string.h>
+ #include <sys/types.h>
+ #include <sys/socket.h>
+
+ /* embedding support */
+ #ifdef SA_PREFIX
+ #if defined(__STDC__) || defined(__cplusplus)
+ #define __SA_CONCAT(x,y) x ## y
+ #define SA_CONCAT(x,y) __SA_CONCAT(x,y)
+ #else
+ #define __SA_CONCAT(x) x
+ #define SA_CONCAT(x,y) __SA_CONCAT(x)y
+ #endif
+ #define sa_addr_st SA_CONCAT(SA_PREFIX,sa_addr_st)
+ #define sa_addr_t SA_CONCAT(SA_PREFIX,sa_addr_t)
+ #define sa_rc_t SA_CONCAT(SA_PREFIX,sa_rc_t)
+ #define sa_st SA_CONCAT(SA_PREFIX,sa_st)
+ #define sa_t SA_CONCAT(SA_PREFIX,sa_t)
+ #define sa_addr_create SA_CONCAT(SA_PREFIX,sa_addr_create)
+ #define sa_addr_destroy SA_CONCAT(SA_PREFIX,sa_addr_destroy)
+ #define sa_addr_u2a SA_CONCAT(SA_PREFIX,sa_addr_u2a)
+ #define sa_addr_s2a SA_CONCAT(SA_PREFIX,sa_addr_s2a)
+ #define sa_addr_a2u SA_CONCAT(SA_PREFIX,sa_addr_a2u)
+ #define sa_addr_a2s SA_CONCAT(SA_PREFIX,sa_addr_a2s)
+ #define sa_create SA_CONCAT(SA_PREFIX,sa_create)
+ #define sa_destroy SA_CONCAT(SA_PREFIX,sa_destroy)
+ #define sa_type SA_CONCAT(SA_PREFIX,sa_type)
+ #define sa_timeout SA_CONCAT(SA_PREFIX,sa_timeout)
+ #define sa_buffers SA_CONCAT(SA_PREFIX,sa_buffers)
+ #define sa_bind SA_CONCAT(SA_PREFIX,sa_bind)
+ #define sa_connect SA_CONCAT(SA_PREFIX,sa_connect)
+ #define sa_listen SA_CONCAT(SA_PREFIX,sa_listen)
+ #define sa_accept SA_CONCAT(SA_PREFIX,sa_accept)
+ #define sa_getremote SA_CONCAT(SA_PREFIX,sa_getremote)
+ #define sa_getlocal SA_CONCAT(SA_PREFIX,sa_getlocal)
+ #define sa_getfd SA_CONCAT(SA_PREFIX,sa_getfd)
+ #define sa_shutdown SA_CONCAT(SA_PREFIX,sa_shutdown)
+ #define sa_read SA_CONCAT(SA_PREFIX,sa_read)
+ #define sa_readln SA_CONCAT(SA_PREFIX,sa_readln)
+ #define sa_write SA_CONCAT(SA_PREFIX,sa_write)
+ #define sa_writef SA_CONCAT(SA_PREFIX,sa_writef)
+ #define sa_flush SA_CONCAT(SA_PREFIX,sa_flush)
+ #define sa_recv SA_CONCAT(SA_PREFIX,sa_recv)
+ #define sa_send SA_CONCAT(SA_PREFIX,sa_send)
+ #endif
+
+ /* fallback for POSIX socklen_t */
+ @SA_FALLBACK_SOCKLEN_T@
+
+ /* socket address abstraction object type */
+ struct sa_addr_st;
+ typedef struct sa_addr_st sa_addr_t;
+
+ /* socket abstraction object type */
+ struct sa_st;
+ typedef struct sa_st sa_t;
+
+ /* socket connection types */
+ typedef enum {
+ SA_TYPE_STREAM,
+ SA_TYPE_DATAGRAM
+ } sa_type_t;
+
+ /* return codes */
+ typedef enum {
+ SA_OK, /* everything ok */
+ SA_ERR_ARG, /* invalid argument (wrong parameter) */
+ SA_ERR_USE, /* invalid use (wrong context) */
+ SA_ERR_MEM, /* out of memory */
+ SA_ERR_SYS, /* system error (see errno) */
+ SA_ERR_EOF, /* end of file/socket communication */
+ SA_ERR_INT /* internal error */
+ } sa_rc_t;
+
+ /* list of timeouts */
+ typedef enum {
+ SA_TIMEOUT_ALL = -1,
+ SA_TIMEOUT_ACCEPT = 0,
+ SA_TIMEOUT_CONNECT = 1,
+ SA_TIMEOUT_READ = 2,
+ SA_TIMEOUT_WRITE = 3,
+ SA_TIMEOUT_RECV = 4,
+ SA_TIMEOUT_SEND = 5
+ } sa_timeout_t;
+
+ /* list of system calls */
+ typedef enum {
+ SA_SYSCALL_CONNECT,
+ SA_SYSCALL_ACCEPT,
+ SA_SYSCALL_SELECT,
+ SA_SYSCALL_READ,
+ SA_SYSCALL_WRITE,
+ SA_SYSCALL_RECVFROM,
+ SA_SYSCALL_SENDTO
+ } sa_syscall_t;
+
+ /* error handling operations */
+ sa_rc_t sa_error (sa_t *sa, sa_rc_t rv, char **str);
+
+ /* address object operations */
+ sa_rc_t sa_addr_create (sa_addr_t **saa);
+ sa_rc_t sa_addr_destroy (sa_addr_t *saa);
+
+ /* address operations */
+ sa_rc_t sa_addr_u2a (sa_addr_t *saa, const char *uri, ...);
+ sa_rc_t sa_addr_s2a (sa_addr_t *saa, const struct sockaddr *sabuf, socklen_t salen);
+ sa_rc_t sa_addr_a2u (sa_addr_t *saa, char **uri);
+ sa_rc_t sa_addr_a2s (sa_addr_t *saa, struct sockaddr **sabuf, socklen_t *salen);
+
+ /* socket object operations */
+ sa_rc_t sa_create (sa_t **sa);
+ sa_rc_t sa_destroy (sa_t *sa);
+
+ /* socket parameter operations */
+ sa_rc_t sa_type (sa_t *sa, sa_type_t type);
+ sa_rc_t sa_timeout (sa_t *sa, sa_timeout_t id, long sec, long usec);
+ sa_rc_t sa_buffers (sa_t *sa, size_t rsize, size_t wsize);
+ sa_rc_t sa_syscall (sa_t *sa, sa_syscall_t id, void (*fptr)(), void *fctx);
+
+ /* socket connection operations */
+ sa_rc_t sa_bind (sa_t *sa, sa_addr_t *laddr);
+ sa_rc_t sa_connect (sa_t *sa, sa_addr_t *raddr);
+ sa_rc_t sa_listen (sa_t *sa, int backlog);
+ sa_rc_t sa_accept (sa_t *sa, sa_addr_t **caddr, sa_t **csa);
+ sa_rc_t sa_getremote (sa_t *sa, sa_addr_t **raddr);
+ sa_rc_t sa_getlocal (sa_t *sa, sa_addr_t **laddr);
+ sa_rc_t sa_getfd (sa_t *sa, int *fd);
+ sa_rc_t sa_shutdown (sa_t *sa, char *flags);
+
+ /* socket input/output operations (stream communication) */
+ sa_rc_t sa_read (sa_t *sa, char *buf, size_t buflen, size_t *bufdone);
+ sa_rc_t sa_readln (sa_t *sa, char *buf, size_t buflen, size_t *bufdone);
+ sa_rc_t sa_write (sa_t *sa, const char *buf, size_t buflen, size_t *bufdone);
+ sa_rc_t sa_writef (sa_t *sa, const char *fmt, ...);
+ sa_rc_t sa_flush (sa_t *sa);
+
+ /* socket input/output operations (datagram communication) */
+ sa_rc_t sa_recv (sa_t *sa, char *buf, size_t buflen, size_t *bufdone, sa_addr_t **raddr);
+ sa_rc_t sa_send (sa_t *sa, const char *buf, size_t buflen, size_t *bufdone, sa_addr_t *raddr);
+
+ #endif /* __SA_H__ */
+
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