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glibc/sunrpc/svc_simple.c
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/* | |
* svc_simple.c | |
* Simplified front end to rpc. | |
* | |
* Copyright (c) 2010, Oracle America, Inc. | |
* | |
* Redistribution and use in source and binary forms, with or without | |
* modification, are permitted provided that the following conditions are | |
* met: | |
* | |
* * Redistributions of source code must retain the above copyright | |
* notice, this list of conditions and the following disclaimer. | |
* * Redistributions in binary form must reproduce the above | |
* copyright notice, this list of conditions and the following | |
* disclaimer in the documentation and/or other materials | |
* provided with the distribution. | |
* * Neither the name of the "Oracle America, Inc." nor the names of its | |
* contributors may be used to endorse or promote products derived | |
* from this software without specific prior written permission. | |
* | |
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
* "AS IS" AND ANY EXPRESS 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 | |
* COPYRIGHT HOLDER OR 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. | |
*/ | |
#include <stdio.h> | |
#include <string.h> | |
#include <libintl.h> | |
#include <unistd.h> | |
#include <rpc/rpc.h> | |
#include <rpc/pmap_clnt.h> | |
#include <sys/socket.h> | |
#include <netdb.h> | |
#include <wchar.h> | |
#include <libio/iolibio.h> | |
#include <shlib-compat.h> | |
struct proglst_ | |
{ | |
char *(*p_progname) (char *); | |
int p_prognum; | |
int p_procnum; | |
xdrproc_t p_inproc, p_outproc; | |
struct proglst_ *p_nxt; | |
}; | |
#ifdef _RPC_THREAD_SAFE_ | |
#define proglst RPC_THREAD_VARIABLE(svcsimple_proglst_s) | |
#else | |
static struct proglst_ *proglst; | |
#endif | |
static void universal (struct svc_req *rqstp, SVCXPRT *transp_s); | |
#ifdef _RPC_THREAD_SAFE_ | |
#define transp RPC_THREAD_VARIABLE(svcsimple_transp_s) | |
#else | |
static SVCXPRT *transp; | |
#endif | |
int | |
__registerrpc (u_long prognum, u_long versnum, u_long procnum, | |
char *(*progname) (char *), xdrproc_t inproc, xdrproc_t outproc) | |
{ | |
struct proglst_ *pl; | |
char *buf; | |
if (procnum == NULLPROC) | |
{ | |
if (__asprintf (&buf, _("can't reassign procedure number %ld\n"), | |
NULLPROC) < 0) | |
buf = NULL; | |
goto err_out; | |
} | |
if (transp == 0) | |
{ | |
transp = svcudp_create (RPC_ANYSOCK); | |
if (transp == NULL) | |
{ | |
buf = strdup (_("couldn't create an rpc server\n")); | |
goto err_out; | |
} | |
} | |
(void) pmap_unset ((u_long) prognum, (u_long) versnum); | |
if (!svc_register (transp, (u_long) prognum, (u_long) versnum, | |
universal, IPPROTO_UDP)) | |
{ | |
if (__asprintf (&buf, _("couldn't register prog %ld vers %ld\n"), | |
prognum, versnum) < 0) | |
buf = NULL; | |
goto err_out; | |
} | |
pl = (struct proglst_ *) malloc (sizeof (struct proglst_)); | |
if (pl == NULL) | |
{ | |
buf = strdup (_("registerrpc: out of memory\n")); | |
goto err_out; | |
} | |
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; | |
err_out: | |
if (buf == NULL) | |
return -1; | |
(void) __fxprintf (NULL, "%s", buf); | |
free (buf); | |
return -1; | |
} | |
libc_sunrpc_symbol (__registerrpc, registerrpc, GLIBC_2_0) | |
static void | |
universal (struct svc_req *rqstp, SVCXPRT *transp_l) | |
{ | |
int prog, proc; | |
char *outdata; | |
char xdrbuf[UDPMSGSIZE]; | |
struct proglst_ *pl; | |
char *buf = NULL; | |
/* | |
* enforce "procnum 0 is echo" convention | |
*/ | |
if (rqstp->rq_proc == NULLPROC) | |
{ | |
if (svc_sendreply (transp_l, (xdrproc_t)xdr_void, | |
(char *) NULL) == FALSE) | |
{ | |
__write (STDERR_FILENO, "xxx\n", 4); | |
exit (1); | |
} | |
return; | |
} | |
prog = rqstp->rq_prog; | |
proc = rqstp->rq_proc; | |
for (pl = proglst; pl != NULL; pl = pl->p_nxt) | |
if (pl->p_prognum == prog && pl->p_procnum == proc) | |
{ | |
/* decode arguments into a CLEAN buffer */ | |
__bzero (xdrbuf, sizeof (xdrbuf)); /* required ! */ | |
if (!svc_getargs (transp_l, pl->p_inproc, xdrbuf)) | |
{ | |
svcerr_decode (transp_l); | |
return; | |
} | |
outdata = (*(pl->p_progname)) (xdrbuf); | |
if (outdata == NULL && pl->p_outproc != (xdrproc_t)xdr_void) | |
/* there was an error */ | |
return; | |
if (!svc_sendreply (transp_l, pl->p_outproc, outdata)) | |
{ | |
if (__asprintf (&buf, _("trouble replying to prog %d\n"), | |
pl->p_prognum) < 0) | |
buf = NULL; | |
goto err_out2; | |
} | |
/* free the decoded arguments */ | |
(void) svc_freeargs (transp_l, pl->p_inproc, xdrbuf); | |
return; | |
} | |
if (__asprintf (&buf, _("never registered prog %d\n"), prog) < 0) | |
buf = NULL; | |
err_out2: | |
if (buf == NULL) | |
exit (1); | |
__fxprintf (NULL, "%s", buf); | |
free (buf); | |
exit (1); | |
} |