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-rw-r--r--lib/libc/rpc/svc_simple.c279
1 files changed, 218 insertions, 61 deletions
diff --git a/lib/libc/rpc/svc_simple.c b/lib/libc/rpc/svc_simple.c
index 1bfaf1c..fec87b7 100644
--- a/lib/libc/rpc/svc_simple.c
+++ b/lib/libc/rpc/svc_simple.c
@@ -1,3 +1,6 @@
+/* $NetBSD: svc_simple.c,v 1.20 2000/07/06 03:10:35 christos Exp $ */
+/* $FreeBSD$ */
+
/*
* Sun RPC is a product of Sun Microsystems, Inc. and is provided for
* unrestricted use provided that this legend is included on all tape
@@ -26,125 +29,279 @@
* 2550 Garcia Avenue
* Mountain View, California 94043
*/
+/*
+ * Copyright (c) 1986-1991 by Sun Microsystems Inc.
+ */
-#if defined(LIBC_SCCS) && !defined(lint)
-/*static char *sccsid = "from: @(#)svc_simple.c 1.18 87/08/11 Copyr 1984 Sun Micro";*/
-/*static char *sccsid = "from: @(#)svc_simple.c 2.2 88/08/01 4.0 RPCSRC";*/
-static char *rcsid = "$FreeBSD$";
-#endif
+/* #pragma ident "@(#)svc_simple.c 1.18 94/04/24 SMI" */
/*
* svc_simple.c
* Simplified front end to rpc.
- *
- * Copyright (C) 1984, Sun Microsystems, Inc.
*/
+/*
+ * This interface creates a virtual listener for all the services
+ * started thru rpc_reg(). It listens on the same endpoint for
+ * all the services and then executes the corresponding service
+ * for the given prognum and procnum.
+ */
+
+#include "reentrant.h"
+#include "namespace.h"
+#include <sys/types.h>
+#include <rpc/rpc.h>
+#include <rpc/nettype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
-#include <rpc/rpc.h>
-#include <rpc/pmap_clnt.h>
-#include <sys/socket.h>
-#include <netdb.h>
+#include <err.h>
+#include "un-namespace.h"
+
+#include "rpc_com.h"
+
+static void universal __P((struct svc_req *, SVCXPRT *));
static struct proglst {
- char *(*p_progname)();
- int p_prognum;
- int p_procnum;
+ char *(*p_progname) __P((char *));
+ rpcprog_t p_prognum;
+ rpcvers_t p_versnum;
+ rpcproc_t p_procnum;
+ SVCXPRT *p_transp;
+ char *p_netid;
+ char *p_xdrbuf;
+ int p_recvsz;
xdrproc_t p_inproc, p_outproc;
struct proglst *p_nxt;
} *proglst;
-static void universal();
-static SVCXPRT *transp;
-struct proglst *pl;
+
+static const char rpc_reg_err[] = "%s: %s";
+static const char rpc_reg_msg[] = "rpc_reg: ";
+static const char __reg_err1[] = "can't find appropriate transport";
+static const char __reg_err2[] = "can't get protocol info";
+static const char __reg_err3[] = "unsupported transport size";
+static const char __no_mem_str[] = "out of memory";
+
+/*
+ * For simplified, easy to use kind of rpc interfaces.
+ * nettype indicates the type of transport on which the service will be
+ * listening. Used for conservation of the system resource. Only one
+ * handle is created for all the services (actually one of each netid)
+ * and same xdrbuf is used for same netid. The size of the arguments
+ * is also limited by the recvsize for that transport, even if it is
+ * a COTS transport. This may be wrong, but for cases like these, they
+ * should not use the simplified interfaces like this.
+ */
int
-registerrpc(prognum, versnum, procnum, progname, inproc, outproc)
- int prognum, versnum, procnum;
- char *(*progname)();
- xdrproc_t inproc, outproc;
+rpc_reg(prognum, versnum, procnum, progname, inproc, outproc, nettype)
+ rpcprog_t prognum; /* program number */
+ rpcvers_t versnum; /* version number */
+ rpcproc_t procnum; /* procedure number */
+ char *(*progname) __P((char *)); /* Server routine */
+ xdrproc_t inproc, outproc; /* in/out XDR procedures */
+ char *nettype; /* nettype */
{
+ struct netconfig *nconf;
+ int done = FALSE;
+ void *handle;
+ extern mutex_t proglst_lock;
+
+
if (procnum == NULLPROC) {
- (void) fprintf(stderr,
- "can't reassign procedure number %ld\n", NULLPROC);
+ warnx("%s can't reassign procedure number %u", rpc_reg_msg,
+ NULLPROC);
return (-1);
}
- if (transp == 0) {
- transp = svcudp_create(RPC_ANYSOCK);
- if (transp == NULL) {
- (void) fprintf(stderr, "couldn't create an rpc server\n");
- return (-1);
- }
- }
- (void) pmap_unset((u_long)prognum, (u_long)versnum);
- if (!svc_register(transp, (u_long)prognum, (u_long)versnum,
- universal, IPPROTO_UDP)) {
- (void) fprintf(stderr, "couldn't register prog %d vers %d\n",
- prognum, versnum);
+
+ if (nettype == NULL)
+ nettype = "netpath"; /* The default behavior */
+ if ((handle = __rpc_setconf(nettype)) == NULL) {
+ warnx(rpc_reg_err, rpc_reg_msg, __reg_err1);
return (-1);
}
- pl = (struct proglst *)malloc(sizeof(struct proglst));
- if (pl == NULL) {
- (void) fprintf(stderr, "registerrpc: out of memory\n");
+/* VARIABLES PROTECTED BY proglst_lock: proglst */
+ mutex_lock(&proglst_lock);
+ while ((nconf = __rpc_getconf(handle)) != NULL) {
+ struct proglst *pl;
+ SVCXPRT *svcxprt;
+ int madenow;
+ u_int recvsz;
+ char *xdrbuf;
+ char *netid;
+
+ madenow = FALSE;
+ svcxprt = NULL;
+ for (pl = proglst; pl; pl = pl->p_nxt)
+ if (strcmp(pl->p_netid, nconf->nc_netid) == 0) {
+ svcxprt = pl->p_transp;
+ xdrbuf = pl->p_xdrbuf;
+ recvsz = pl->p_recvsz;
+ netid = pl->p_netid;
+ break;
+ }
+
+ if (svcxprt == NULL) {
+ struct __rpc_sockinfo si;
+
+ svcxprt = svc_tli_create(RPC_ANYFD, nconf, NULL, 0, 0);
+ if (svcxprt == NULL)
+ continue;
+ if (!__rpc_fd2sockinfo(svcxprt->xp_fd, &si)) {
+ warnx(rpc_reg_err, rpc_reg_msg, __reg_err2);
+ SVC_DESTROY(svcxprt);
+ continue;
+ }
+ recvsz = __rpc_get_t_size(si.si_af, si.si_proto, 0);
+ if (recvsz == 0) {
+ warnx(rpc_reg_err, rpc_reg_msg, __reg_err3);
+ SVC_DESTROY(svcxprt);
+ continue;
+ }
+ if (((xdrbuf = malloc((unsigned)recvsz)) == NULL) ||
+ ((netid = strdup(nconf->nc_netid)) == NULL)) {
+ warnx(rpc_reg_err, rpc_reg_msg, __no_mem_str);
+ SVC_DESTROY(svcxprt);
+ break;
+ }
+ madenow = TRUE;
+ }
+ /*
+ * Check if this (program, version, netid) had already been
+ * registered. The check may save a few RPC calls to rpcbind
+ */
+ for (pl = proglst; pl; pl = pl->p_nxt)
+ if ((pl->p_prognum == prognum) &&
+ (pl->p_versnum == versnum) &&
+ (strcmp(pl->p_netid, netid) == 0))
+ break;
+ if (pl == NULL) { /* Not yet */
+ (void) rpcb_unset(prognum, versnum, nconf);
+ } else {
+ /* so that svc_reg does not call rpcb_set() */
+ nconf = NULL;
+ }
+
+ if (!svc_reg(svcxprt, prognum, versnum, universal, nconf)) {
+ warnx("%s couldn't register prog %u vers %u for %s",
+ rpc_reg_msg, (unsigned)prognum,
+ (unsigned)versnum, netid);
+ if (madenow) {
+ SVC_DESTROY(svcxprt);
+ free(xdrbuf);
+ free(netid);
+ }
+ continue;
+ }
+
+ pl = malloc(sizeof (struct proglst));
+ if (pl == NULL) {
+ warnx(rpc_reg_err, rpc_reg_msg, __no_mem_str);
+ if (madenow) {
+ SVC_DESTROY(svcxprt);
+ free(xdrbuf);
+ free(netid);
+ }
+ break;
+ }
+ pl->p_progname = progname;
+ pl->p_prognum = prognum;
+ pl->p_versnum = versnum;
+ pl->p_procnum = procnum;
+ pl->p_inproc = inproc;
+ pl->p_outproc = outproc;
+ pl->p_transp = svcxprt;
+ pl->p_xdrbuf = xdrbuf;
+ pl->p_recvsz = recvsz;
+ pl->p_netid = netid;
+ pl->p_nxt = proglst;
+ proglst = pl;
+ done = TRUE;
+ }
+ __rpc_endconf(handle);
+ mutex_unlock(&proglst_lock);
+
+ if (done == FALSE) {
+ warnx("%s cant find suitable transport for %s",
+ rpc_reg_msg, nettype);
return (-1);
}
- pl->p_progname = progname;
- pl->p_prognum = prognum;
- pl->p_procnum = procnum;
- pl->p_inproc = inproc;
- pl->p_outproc = outproc;
- pl->p_nxt = proglst;
- proglst = pl;
return (0);
}
+/*
+ * The universal handler for the services registered using registerrpc.
+ * It handles both the connectionless and the connection oriented cases.
+ */
+
static void
universal(rqstp, transp)
struct svc_req *rqstp;
SVCXPRT *transp;
{
- int prog, proc;
+ rpcprog_t prog;
+ rpcvers_t vers;
+ rpcproc_t proc;
char *outdata;
- char xdrbuf[UDPMSGSIZE];
+ char *xdrbuf;
struct proglst *pl;
+ extern mutex_t proglst_lock;
/*
* enforce "procnum 0 is echo" convention
*/
if (rqstp->rq_proc == NULLPROC) {
- if (svc_sendreply(transp, xdr_void, NULL) == FALSE) {
- (void) fprintf(stderr, "xxx\n");
- exit(1);
+ if (svc_sendreply(transp, (xdrproc_t) xdr_void, NULL) ==
+ FALSE) {
+ warnx("svc_sendreply failed");
}
return;
}
prog = rqstp->rq_prog;
+ vers = rqstp->rq_vers;
proc = rqstp->rq_proc;
- for (pl = proglst; pl != NULL; pl = pl->p_nxt)
- if (pl->p_prognum == prog && pl->p_procnum == proc) {
+ mutex_lock(&proglst_lock);
+ for (pl = proglst; pl; pl = pl->p_nxt)
+ if (pl->p_prognum == prog && pl->p_procnum == proc &&
+ pl->p_versnum == vers &&
+ (strcmp(pl->p_netid, transp->xp_netid) == 0)) {
/* decode arguments into a CLEAN buffer */
- memset(xdrbuf, 0, sizeof(xdrbuf)); /* required ! */
+ xdrbuf = pl->p_xdrbuf;
+ /* Zero the arguments: reqd ! */
+ (void) memset(xdrbuf, 0, sizeof (pl->p_recvsz));
+ /*
+ * Assuming that sizeof (xdrbuf) would be enough
+ * for the arguments; if not then the program
+ * may bomb. BEWARE!
+ */
if (!svc_getargs(transp, pl->p_inproc, xdrbuf)) {
svcerr_decode(transp);
+ mutex_unlock(&proglst_lock);
return;
}
outdata = (*(pl->p_progname))(xdrbuf);
- if (outdata == NULL && pl->p_outproc != xdr_void)
+ if (outdata == NULL &&
+ pl->p_outproc != (xdrproc_t) xdr_void){
/* there was an error */
+ mutex_unlock(&proglst_lock);
return;
+ }
if (!svc_sendreply(transp, pl->p_outproc, outdata)) {
- (void) fprintf(stderr,
- "trouble replying to prog %d\n",
- pl->p_prognum);
- exit(1);
+ warnx(
+ "rpc: rpc_reg trouble replying to prog %u vers %u",
+ (unsigned)prog, (unsigned)vers);
+ mutex_unlock(&proglst_lock);
+ return;
}
/* free the decoded arguments */
(void)svc_freeargs(transp, pl->p_inproc, xdrbuf);
+ mutex_unlock(&proglst_lock);
return;
}
- (void) fprintf(stderr, "never registered prog %d\n", prog);
- exit(1);
+ mutex_unlock(&proglst_lock);
+ /* This should never happen */
+ warnx("rpc: rpc_reg: never registered prog %u vers %u",
+ (unsigned)prog, (unsigned)vers);
+ return;
}
-
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