clnt_generic.c File Reference

#include <wintirpc.h>
#include <reentrant.h>
#include <sys/types.h>
#include <fcntl.h>
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include <stdlib.h>
#include <rpc/rpc.h>
#include <rpc/nettype.h>
#include "rpc_com.h"

Include dependency graph for clnt_generic.c:

Go to the source code of this file.

Macros
#define	NETIDLEN   32

Functions
bool_t	__rpc_is_local_host (const char *)
CLIENT *	clnt_create_vers (const char *hostname, const rpcprog_t prog, rpcvers_t *vers_out, const rpcvers_t vers_low, const rpcvers_t vers_high, const char *nettype)
CLIENT *	clnt_create_vers_timed (const char *hostname, const rpcprog_t prog, rpcvers_t *vers_out, const rpcvers_t vers_low_in, const rpcvers_t vers_high_in, const char *nettype, const struct timeval *tp)
CLIENT *	clnt_create (const char *hostname, const rpcprog_t prog, const rpcvers_t vers, const char *nettype)
CLIENT *	clnt_create_timed (const char *hostname, const rpcprog_t prog, const rpcvers_t vers, const char *netclass, const struct timeval *tp)
CLIENT *	clnt_tp_create (const char *hostname, const rpcprog_t prog, const rpcvers_t vers, const struct netconfig *nconf)
CLIENT *	clnt_tp_create_timed (const char *hostname, const rpcprog_t prog, const rpcvers_t vers, const struct netconfig *nconf, const struct timeval *tp)
CLIENT *	clnt_tli_create (const SOCKET fd_in, const struct netconfig *nconf, struct netbuf *svcaddr, const rpcprog_t prog, const rpcvers_t vers, const uint sendsz, const uint recvsz, int(*callback_xdr)(void *, void *), int(*callback_function)(void *, void *, void **), void *callback_args)

Macro Definition Documentation

NETIDLEN

#define NETIDLEN   32

Definition at line 81 of file clnt_generic.c.

Function Documentation

__rpc_is_local_host()

bool_t __rpc_is_local_host

(

const char *

)

clnt_create()

CLIENT * clnt_create	(	const char *	hostname,
		const rpcprog_t	prog,
		const rpcvers_t	vers,
		const char *	nettype
	)

Definition at line 179 of file clnt_generic.c.

{
 
    return (clnt_create_timed(hostname, prog, vers, nettype, NULL));
}

Referenced by rpc_call().

clnt_create_timed()

CLIENT * clnt_create_timed	(	const char *	hostname,
		const rpcprog_t	prog,
		const rpcvers_t	vers,
		const char *	netclass,
		const struct timeval *	tp
	)

Definition at line 195 of file clnt_generic.c.

{
    struct netconfig *nconf;
    CLIENT *clnt = NULL;
    void *handle;
    enum clnt_stat  save_cf_stat = RPC_SUCCESS;
    struct rpc_err  save_cf_error;
    char nettype_array[NETIDLEN];
    char *nettype = &nettype_array[0];
 
    if (netclass == NULL)
        nettype = NULL;
    else {
        size_t len = strlen(netclass);
        if (len >= sizeof (nettype_array)) {
            rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
            return (NULL);
        }
        strcpy(nettype, netclass);
    }
 
    if ((handle = __rpc_setconf((char *)nettype)) == NULL) {
        rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
        return (NULL);
    }
    rpc_createerr.cf_stat = RPC_SUCCESS;
    while (clnt == NULL) {
        if ((nconf = __rpc_getconf(handle)) == NULL) {
            if (rpc_createerr.cf_stat == RPC_SUCCESS)
                rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
            break;
        }
#ifdef CLNT_DEBUG
        printf("trying netid %s\n", nconf->nc_netid);
#endif
        clnt = clnt_tp_create_timed(hostname, prog, vers, nconf, tp);
        if (clnt)
            break;
        else {
            /*
             *  Since we didn't get a name-to-address
             *  translation failure here, we remember
             *  this particular error.  The object of
             *  this is to enable us to return to the
             *  caller a more-specific error than the
             *  unhelpful ``Name to address translation
             *  failed'' which might well occur if we
             *  merely returned the last error (because
             *  the local loopbacks are typically the
             *  last ones in /etc/netconfig and the most
             *  likely to be unable to translate a host
             *  name).  We also check for a more
             *  meaningful error than ``unknown host
             *  name'' for the same reasons.
             */
            if (rpc_createerr.cf_stat != RPC_N2AXLATEFAILURE &&
                rpc_createerr.cf_stat != RPC_UNKNOWNHOST) {
                save_cf_stat = rpc_createerr.cf_stat;
                save_cf_error = rpc_createerr.cf_error;
            }
        }
    }
 
    /*
     *  Attempt to return an error more specific than ``Name to address
     *  translation failed'' or ``unknown host name''
     */
    if ((rpc_createerr.cf_stat == RPC_N2AXLATEFAILURE ||
         rpc_createerr.cf_stat == RPC_UNKNOWNHOST) &&
        (save_cf_stat != RPC_SUCCESS)) {
        rpc_createerr.cf_stat = save_cf_stat;
        rpc_createerr.cf_error = save_cf_error;
    }
    __rpc_endconf(handle);
    return (clnt);
}

Referenced by clnt_create(), and clnt_create_vers_timed().

clnt_create_vers()

CLIENT * clnt_create_vers	(	const char *	hostname,
		const rpcprog_t	prog,
		rpcvers_t *	vers_out,
		const rpcvers_t	vers_low,
		const rpcvers_t	vers_high,
		const char *	nettype
	)

Definition at line 94 of file clnt_generic.c.

{
 
    return (clnt_create_vers_timed(hostname, prog, vers_out, vers_low,
                vers_high, nettype, NULL));
}

clnt_create_vers_timed()

CLIENT * clnt_create_vers_timed	(	const char *	hostname,
		const rpcprog_t	prog,
		rpcvers_t *	vers_out,
		const rpcvers_t	vers_low_in,
		const rpcvers_t	vers_high_in,
		const char *	nettype,
		const struct timeval *	tp
	)

Definition at line 109 of file clnt_generic.c.

{
    CLIENT *clnt;
    struct timeval to;
    enum clnt_stat rpc_stat;
    struct rpc_err rpcerr;
    rpcvers_t vers_high = vers_high_in;
    rpcvers_t vers_low = vers_low_in;
 
    clnt = clnt_create_timed(hostname, prog, vers_high, nettype, tp);
    if (clnt == NULL) {
        return (NULL);
    }
    to.tv_sec = 10;
    to.tv_usec = 0;
    rpc_stat = clnt_call(clnt, NULLPROC, (xdrproc_t)xdr_void,
            (char *)NULL, (xdrproc_t)xdr_void, (char *)NULL, to);
    if (rpc_stat == RPC_SUCCESS) {
        *vers_out = vers_high;
        return (clnt);
    }
    while (rpc_stat == RPC_PROGVERSMISMATCH && vers_high > vers_low) {
        unsigned int minvers, maxvers;
 
        clnt_geterr(clnt, &rpcerr);
        minvers = rpcerr.re_vers.low;
        maxvers = rpcerr.re_vers.high;
        if (maxvers < vers_high)
            vers_high = maxvers;
        else
            vers_high--;
        if (minvers > vers_low)
            vers_low = minvers;
        if (vers_low > vers_high) {
            goto error;
        }
        CLNT_CONTROL(clnt, CLSET_VERS, (char *)&vers_high);
        rpc_stat = clnt_call(clnt, NULLPROC, (xdrproc_t)xdr_void,
                (char *)NULL, (xdrproc_t)xdr_void,
                (char *)NULL, to);
        if (rpc_stat == RPC_SUCCESS) {
            *vers_out = vers_high;
            return (clnt);
        }
    }
    clnt_geterr(clnt, &rpcerr);
 
error:
    rpc_createerr.cf_stat = rpc_stat;
    rpc_createerr.cf_error = rpcerr;
    clnt_destroy(clnt);
    return (NULL);
}

Referenced by clnt_create_vers().

clnt_tli_create()

CLIENT * clnt_tli_create	(	const SOCKET	fd_in,
		const struct netconfig *	nconf,
		struct netbuf *	svcaddr,
		const rpcprog_t	prog,
		const rpcvers_t	vers,
		const uint	sendsz,
		const uint	recvsz,
		int(*)(void *, void *)	callback_xdr,
		int(*)(void *, void *, void **)	callback_function,
		void *	callback_args
	)

Definition at line 347 of file clnt_generic.c.

{
    CLIENT *cl;         /* client handle */
    bool_t madefd = FALSE;      /* whether fd opened here */
    long servtype;
    BOOL one = TRUE;
    struct __rpc_sockinfo si;
    extern int __rpc_minfd;
    SOCKET fd = fd_in;
 
    if (fd == RPC_ANYFD) {
        if (nconf == NULL) {
            rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
            return (NULL);
        }
 
        fd = __rpc_nconf2fd(nconf);
 
        if (fd == INVALID_SOCKET)
            goto err;
#if 0
        if (fd < __rpc_minfd)
            fd = __rpc_raise_fd(fd);
#endif
        madefd = TRUE;
        servtype = nconf->nc_semantics;
        bindresvport(fd, NULL);
        if (!__rpc_fd2sockinfo(fd, &si))
            goto err;
    } else {
        if (!__rpc_fd2sockinfo(fd, &si))
            goto err;
        servtype = __rpc_socktype2seman(si.si_socktype);
        if (servtype == -1) {
            rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
            return (NULL);
        }
    }
 
    if (si.si_af != ((struct sockaddr *)svcaddr->buf)->sa_family) {
        rpc_createerr.cf_stat = RPC_UNKNOWNHOST;    /* XXX */
        goto err1;
    }
 
    switch (servtype) {
    case NC_TPI_COTS:
        cl = clnt_vc_create(fd, svcaddr, prog, vers, sendsz, recvsz, 
            callback_xdr, callback_function, callback_args);
        break;
    case NC_TPI_COTS_ORD:
        if (nconf &&
            ((strcmp(nconf->nc_protofmly, "inet") == 0) ||
             (strcmp(nconf->nc_protofmly, "inet6") == 0))) {
            setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, (const char *)&one,
                sizeof (one));
        }
        cl = clnt_vc_create(fd, svcaddr, prog, vers, sendsz, recvsz,
            callback_xdr, callback_function, callback_args);
        break;
    case NC_TPI_CLTS:
        cl = clnt_dg_create(fd, svcaddr, prog, vers, sendsz, recvsz);
        break;
    default:
        goto err;
    }
 
    if (cl == NULL)
        goto err1; /* borrow errors from clnt_dg/vc creates */
    if (nconf) {
        cl->cl_netid = strdup(nconf->nc_netid);
        cl->cl_tp = strdup(nconf->nc_device);
    } else {
        cl->cl_netid = "";
        cl->cl_tp = "";
    }
    if (madefd) {
        (void) CLNT_CONTROL(cl, CLSET_FD_CLOSE, NULL);
/*      (void) CLNT_CONTROL(cl, CLSET_POP_TIMOD, NULL);  */
    };
 
    return (cl);
 
err:
    rpc_createerr.cf_stat = RPC_SYSTEMERROR;
    rpc_createerr.cf_error.re_errno = errno;
err1:   if (madefd)
        (void)closesocket(fd);
    return (NULL);
}

Referenced by clnt_tp_create_timed(), get_client_for_netaddr(), and getclnthandle().

clnt_tp_create()

CLIENT * clnt_tp_create	(	const char *	hostname,
		const rpcprog_t	prog,
		const rpcvers_t	vers,
		const struct netconfig *	nconf
	)

Definition at line 282 of file clnt_generic.c.

{
    return (clnt_tp_create_timed(hostname, prog, vers, nconf, NULL));
}

Referenced by _des_crypt_call(), and getkeyserv_handle().

clnt_tp_create_timed()

CLIENT * clnt_tp_create_timed	(	const char *	hostname,
		const rpcprog_t	prog,
		const rpcvers_t	vers,
		const struct netconfig *	nconf,
		const struct timeval *	tp
	)

Definition at line 295 of file clnt_generic.c.

{
    struct netbuf *svcaddr;         /* servers address */
    CLIENT *cl = NULL;          /* client handle */
 
    if (nconf == NULL) {
        rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
        return (NULL);
    }
 
    /*
     * Get the address of the server
     */
    if ((svcaddr = __rpcb_findaddr_timed(prog, vers,
            (struct netconfig *)nconf, (char *)hostname,
            &cl, (struct timeval *)tp)) == NULL) {
        /* appropriate error number is set by rpcbind libraries */
        return (NULL);
    }
    if (cl == NULL) {
        cl = clnt_tli_create(RPC_ANYFD, nconf, svcaddr,
                    prog, vers, 0, 0, NULL, NULL, NULL);
    } else {
        /* Reuse the CLIENT handle and change the appropriate fields */
        if (CLNT_CONTROL(cl, CLSET_SVC_ADDR, (void *)svcaddr) == TRUE) {
            if (cl->cl_netid == NULL)
                cl->cl_netid = strdup(nconf->nc_netid);
            if (cl->cl_tp == NULL)
                cl->cl_tp = strdup(nconf->nc_device);
            (void) CLNT_CONTROL(cl, CLSET_PROG, (void *)&prog);
            (void) CLNT_CONTROL(cl, CLSET_VERS, (void *)&vers);
        } else {
            CLNT_DESTROY(cl);
            cl = clnt_tli_create(RPC_ANYFD, nconf, svcaddr,
                    prog, vers, 0, 0, NULL, NULL, NULL);
        }
    }
    free(svcaddr->buf);
    free(svcaddr);
    return (cl);
}

Referenced by clnt_create_timed(), and clnt_tp_create().