#if !defined(lint) && defined(SCCSIDS)
static char sccsid[] = "@(#)svc_tcp.c 1.21 87/08/11 Copyr 1984 Sun Micro";
#endif
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <gssrpc/rpc.h>
#include <sys/socket.h>
#include <errno.h>
#include <stdlib.h>
#include "autoconf.h"
static bool_t svctcp_recv(SVCXPRT *, struct rpc_msg *);
static enum xprt_stat svctcp_stat(SVCXPRT *);
static bool_t svctcp_getargs(SVCXPRT *, xdrproc_t, void *);
static bool_t svctcp_reply(SVCXPRT *, struct rpc_msg *);
static bool_t svctcp_freeargs(SVCXPRT *, xdrproc_t, void *);
static void svctcp_destroy(SVCXPRT *);
static struct xp_ops svctcp_op = {
svctcp_recv,
svctcp_stat,
svctcp_getargs,
svctcp_reply,
svctcp_freeargs,
svctcp_destroy
};
static bool_t rendezvous_request(SVCXPRT *, struct rpc_msg *);
static bool_t abortx(void);
static bool_t abortx_getargs(SVCXPRT *, xdrproc_t, void *);
static bool_t abortx_reply(SVCXPRT *, struct rpc_msg *);
static bool_t abortx_freeargs(SVCXPRT *, xdrproc_t, void *);
static enum xprt_stat rendezvous_stat(SVCXPRT *);
static struct xp_ops svctcp_rendezvous_op = {
rendezvous_request,
rendezvous_stat,
abortx_getargs,
abortx_reply,
abortx_freeargs,
svctcp_destroy
};
static int readtcp(char *, caddr_t, int), writetcp(char *, caddr_t, int);
static SVCXPRT *makefd_xprt(int, u_int, u_int);
struct tcp_rendezvous {
u_int sendsize;
u_int recvsize;
};
struct tcp_conn {
enum xprt_stat strm_stat;
uint32_t x_id;
XDR xdrs;
char verf_body[MAX_AUTH_BYTES];
};
SVCXPRT *
svctcp_create(
register int sock,
u_int sendsize,
u_int recvsize)
{
bool_t madesock = FALSE;
register SVCXPRT *xprt;
register struct tcp_rendezvous *r;
struct sockaddr_in addr;
int len = sizeof(struct sockaddr_in);
if (sock == RPC_ANYSOCK) {
if ((sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)) < 0) {
perror("svctcp_.c - udp socket creation problem");
return ((SVCXPRT *)NULL);
}
madesock = TRUE;
}
memset((char *)&addr, 0, sizeof (addr));
#if HAVE_STRUCT_SOCKADDR_IN_SIN_LEN
addr.sin_len = sizeof(addr);
#endif
addr.sin_family = AF_INET;
if (bindresvport(sock, &addr)) {
addr.sin_port = 0;
(void)bind(sock, (struct sockaddr *)&addr, len);
}
if (getsockname(sock, (struct sockaddr *)&addr, &len) != 0) {
perror("svc_tcp.c - cannot getsockname");
if (madesock)
(void) close(sock);
return ((SVCXPRT *)NULL);
}
if (listen(sock, 2) != 0) {
perror("svctcp_.c - cannot listen");
if (madesock)
(void)close(sock);
return ((SVCXPRT *)NULL);
}
r = (struct tcp_rendezvous *)mem_alloc(sizeof(*r));
if (r == NULL) {
(void) fprintf(stderr, "svctcp_create: out of memory\n");
return (NULL);
}
r->sendsize = sendsize;
r->recvsize = recvsize;
xprt = (SVCXPRT *)mem_alloc(sizeof(SVCXPRT));
if (xprt == NULL) {
(void) fprintf(stderr, "svctcp_create: out of memory\n");
return (NULL);
}
xprt->xp_p2 = NULL;
xprt->xp_p1 = (caddr_t)r;
xprt->xp_auth = NULL;
xprt->xp_verf = gssrpc__null_auth;
xprt->xp_ops = &svctcp_rendezvous_op;
xprt->xp_port = ntohs(addr.sin_port);
xprt->xp_sock = sock;
xprt->xp_laddrlen = 0;
xprt_register(xprt);
return (xprt);
}
SVCXPRT *
svcfd_create(
int fd,
u_int sendsize,
u_int recvsize)
{
return (makefd_xprt(fd, sendsize, recvsize));
}
static SVCXPRT *
makefd_xprt(
int fd,
u_int sendsize,
u_int recvsize)
{
register SVCXPRT *xprt;
register struct tcp_conn *cd;
xprt = (SVCXPRT *)mem_alloc(sizeof(SVCXPRT));
if (xprt == (SVCXPRT *)NULL) {
(void) fprintf(stderr, "svc_tcp: makefd_xprt: out of memory\n");
goto done;
}
cd = (struct tcp_conn *)mem_alloc(sizeof(struct tcp_conn));
if (cd == (struct tcp_conn *)NULL) {
(void) fprintf(stderr, "svc_tcp: makefd_xprt: out of memory\n");
mem_free((char *) xprt, sizeof(SVCXPRT));
xprt = (SVCXPRT *)NULL;
goto done;
}
cd->strm_stat = XPRT_IDLE;
xdrrec_create(&(cd->xdrs), sendsize, recvsize,
(caddr_t)xprt, readtcp, writetcp);
xprt->xp_p2 = NULL;
xprt->xp_p1 = (caddr_t)cd;
xprt->xp_auth = NULL;
xprt->xp_verf.oa_base = cd->verf_body;
xprt->xp_addrlen = 0;
xprt->xp_laddrlen = 0;
xprt->xp_ops = &svctcp_op;
xprt->xp_port = 0;
xprt->xp_sock = fd;
xprt_register(xprt);
done:
return (xprt);
}
static bool_t
rendezvous_request(
register SVCXPRT *xprt,
struct rpc_msg *msg)
{
int sock;
struct tcp_rendezvous *r;
struct sockaddr_in addr, laddr;
int len, llen;
r = (struct tcp_rendezvous *)xprt->xp_p1;
again:
len = llen = sizeof(struct sockaddr_in);
if ((sock = accept(xprt->xp_sock, (struct sockaddr *)&addr,
&len)) < 0) {
if (errno == EINTR)
goto again;
return (FALSE);
}
if (getsockname(sock, &laddr, &llen) < 0)
return (FALSE);
xprt = makefd_xprt(sock, r->sendsize, r->recvsize);
xprt->xp_raddr = addr;
xprt->xp_addrlen = len;
xprt->xp_laddr = laddr;
xprt->xp_laddrlen = llen;
return (FALSE);
}
static enum xprt_stat
rendezvous_stat(register SVCXPRT *xprt)
{
return (XPRT_IDLE);
}
static void
svctcp_destroy(register SVCXPRT *xprt)
{
register struct tcp_conn *cd = (struct tcp_conn *)xprt->xp_p1;
xprt_unregister(xprt);
(void)close(xprt->xp_sock);
if (xprt->xp_port != 0) {
xprt->xp_port = 0;
} else {
XDR_DESTROY(&(cd->xdrs));
}
if (xprt->xp_auth != NULL) {
SVCAUTH_DESTROY(xprt->xp_auth);
xprt->xp_auth = NULL;
}
mem_free((caddr_t)cd, sizeof(struct tcp_conn));
mem_free((caddr_t)xprt, sizeof(SVCXPRT));
}
static struct timeval wait_per_try = { 35, 0 };
static int
readtcp(
char *xprtptr,
caddr_t buf,
register int len)
{
register SVCXPRT *xprt = (SVCXPRT *)(void *)xprtptr;
register int sock = xprt->xp_sock;
struct timeval tout;
#ifdef FD_SETSIZE
fd_set mask;
fd_set readfds;
FD_ZERO(&mask);
FD_SET(sock, &mask);
#else
register int mask = 1 << sock;
int readfds;
#endif
#ifdef FD_SETSIZE
#define loopcond (!FD_ISSET(sock, &readfds))
#else
#define loopcond (readfds != mask)
#endif
do {
readfds = mask;
tout = wait_per_try;
if (select(sock + 1, &readfds, (fd_set*)NULL,
(fd_set*)NULL, &tout) <= 0) {
if (errno == EINTR) {
continue;
}
goto fatal_err;
}
} while (loopcond);
if ((len = read(sock, buf, (size_t) len)) > 0) {
return (len);
}
fatal_err:
((struct tcp_conn *)(xprt->xp_p1))->strm_stat = XPRT_DIED;
return (-1);
}
static int
writetcp(
char *xprtptr,
caddr_t buf,
int len)
{
register SVCXPRT *xprt = (SVCXPRT *)(void *) xprtptr;
register int i, cnt;
for (cnt = len; cnt > 0; cnt -= i, buf += i) {
if ((i = write(xprt->xp_sock, buf, (size_t) cnt)) < 0) {
((struct tcp_conn *)(xprt->xp_p1))->strm_stat =
XPRT_DIED;
return (-1);
}
}
return (len);
}
static enum xprt_stat
svctcp_stat(SVCXPRT *xprt)
{
register struct tcp_conn *cd =
(struct tcp_conn *)(xprt->xp_p1);
if (cd->strm_stat == XPRT_DIED)
return (XPRT_DIED);
if (! xdrrec_eof(&(cd->xdrs)))
return (XPRT_MOREREQS);
return (XPRT_IDLE);
}
static bool_t
svctcp_recv(
SVCXPRT *xprt,
register struct rpc_msg *msg)
{
register struct tcp_conn *cd =
(struct tcp_conn *)(xprt->xp_p1);
register XDR *xdrs = &(cd->xdrs);
xdrs->x_op = XDR_DECODE;
(void)xdrrec_skiprecord(xdrs);
if (xdr_callmsg(xdrs, msg)) {
cd->x_id = msg->rm_xid;
return (TRUE);
}
return (FALSE);
}
static bool_t
svctcp_getargs(
SVCXPRT *xprt,
xdrproc_t xdr_args,
void *args_ptr)
{
if (! SVCAUTH_UNWRAP(xprt->xp_auth,
&(((struct tcp_conn *)(xprt->xp_p1))->xdrs),
xdr_args, args_ptr)) {
(void)svctcp_freeargs(xprt, xdr_args, args_ptr);
return FALSE;
}
return TRUE;
}
static bool_t
svctcp_freeargs(
SVCXPRT *xprt,
xdrproc_t xdr_args,
void * args_ptr)
{
register XDR *xdrs =
&(((struct tcp_conn *)(xprt->xp_p1))->xdrs);
xdrs->x_op = XDR_FREE;
return ((*xdr_args)(xdrs, args_ptr));
}
static bool_t svctcp_reply(
SVCXPRT *xprt,
register struct rpc_msg *msg)
{
register struct tcp_conn *cd =
(struct tcp_conn *)(xprt->xp_p1);
register XDR *xdrs = &(cd->xdrs);
register bool_t stat;
xdrproc_t xdr_results;
caddr_t xdr_location;
bool_t has_args;
if (msg->rm_reply.rp_stat == MSG_ACCEPTED &&
msg->rm_reply.rp_acpt.ar_stat == SUCCESS) {
has_args = TRUE;
xdr_results = msg->acpted_rply.ar_results.proc;
xdr_location = msg->acpted_rply.ar_results.where;
msg->acpted_rply.ar_results.proc = xdr_void;
msg->acpted_rply.ar_results.where = NULL;
} else
has_args = FALSE;
xdrs->x_op = XDR_ENCODE;
msg->rm_xid = cd->x_id;
stat = FALSE;
if (xdr_replymsg(xdrs, msg) &&
(!has_args ||
(SVCAUTH_WRAP(xprt->xp_auth, xdrs, xdr_results, xdr_location)))) {
stat = TRUE;
}
(void)xdrrec_endofrecord(xdrs, TRUE);
return (stat);
}
static bool_t abortx(void)
{
abort();
return 1;
}
static bool_t abortx_getargs(
SVCXPRT *xprt,
xdrproc_t proc,
void *info)
{
return abortx();
}
static bool_t abortx_reply(SVCXPRT *xprt, struct rpc_msg *msg)
{
return abortx();
}
static bool_t abortx_freeargs(
SVCXPRT *xprt, xdrproc_t proc,
void * info)
{
return abortx();
}