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Annotation of 43BSDReno/lib/librpc/pmap_clnt.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
        !             3:  * unrestricted use provided that this legend is included on all tape
        !             4:  * media and as a part of the software program in whole or part.  Users
        !             5:  * may copy or modify Sun RPC without charge, but are not authorized
        !             6:  * to license or distribute it to anyone else except as part of a product or
        !             7:  * program developed by the user.
        !             8:  * 
        !             9:  * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
        !            10:  * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
        !            11:  * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
        !            12:  * 
        !            13:  * Sun RPC is provided with no support and without any obligation on the
        !            14:  * part of Sun Microsystems, Inc. to assist in its use, correction,
        !            15:  * modification or enhancement.
        !            16:  * 
        !            17:  * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
        !            18:  * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
        !            19:  * OR ANY PART THEREOF.
        !            20:  * 
        !            21:  * In no event will Sun Microsystems, Inc. be liable for any lost revenue
        !            22:  * or profits or other special, indirect and consequential damages, even if
        !            23:  * Sun has been advised of the possibility of such damages.
        !            24:  * 
        !            25:  * Sun Microsystems, Inc.
        !            26:  * 2550 Garcia Avenue
        !            27:  * Mountain View, California  94043
        !            28:  */
        !            29: #ifndef lint
        !            30: static char sccsid[] = "@(#)pmap_clnt.c 1.4 85/04/08 Copyr 1984 Sun Micro";
        !            31: #endif
        !            32: 
        !            33: /*
        !            34:  * pmap_clnt.c
        !            35:  * Client interface to pmap rpc service.
        !            36:  *
        !            37:  * Copyright (C) 1984, Sun Microsystems, Inc.
        !            38:  */
        !            39: 
        !            40: #include "types.h"
        !            41: #include <netinet/in.h>
        !            42: #include "xdr.h"
        !            43: #include "auth.h"
        !            44: #include "clnt.h"
        !            45: #include "rpc_msg.h"
        !            46: #include "pmap_prot.h" 
        !            47: #include "pmap_clnt.h"
        !            48: #include <sys/socket.h>
        !            49: #include <sys/time.h>
        !            50: #include <stdio.h>
        !            51: #include <net/if.h>
        !            52: #include <sys/ioctl.h>
        !            53: #include <arpa/inet.h>
        !            54: #define NAMELEN 255
        !            55: 
        !            56: static struct timeval timeout = { 5, 0 };
        !            57: static struct timeval tottimeout = { 60, 0 };
        !            58: static struct sockaddr_in myaddress;
        !            59: 
        !            60: void clnt_perror();
        !            61: 
        !            62: 
        !            63: /*
        !            64:  * Set a mapping between program,version and port.
        !            65:  * Calls the pmap service remotely to do the mapping.
        !            66:  */
        !            67: bool_t
        !            68: pmap_set(program, version, protocol, port)
        !            69:        u_long program;
        !            70:        u_long version;
        !            71:        u_long protocol;
        !            72:        u_short port;
        !            73: {
        !            74:        struct sockaddr_in myaddress;
        !            75:        int socket = -1;
        !            76:        register CLIENT *client;
        !            77:        struct pmap parms;
        !            78:        bool_t rslt;
        !            79: 
        !            80:        get_myaddress(&myaddress);
        !            81:        client = clntudp_create(&myaddress, PMAPPROG, PMAPVERS,
        !            82:            timeout, &socket);
        !            83:        if (client == (CLIENT *)NULL)
        !            84:                return (FALSE);
        !            85:        parms.pm_prog = program;
        !            86:        parms.pm_vers = version;
        !            87:        parms.pm_prot = protocol;
        !            88:        parms.pm_port = port;
        !            89:        if (CLNT_CALL(client, PMAPPROC_SET, xdr_pmap, &parms, xdr_bool, &rslt,
        !            90:            tottimeout) != RPC_SUCCESS) {
        !            91:                clnt_perror(client, "Cannot register service");
        !            92:                return (FALSE);
        !            93:        }
        !            94:        CLNT_DESTROY(client);
        !            95:        (void)close(socket);
        !            96:        return (rslt);
        !            97: }
        !            98: 
        !            99: /*
        !           100:  * Remove the mapping between program,version and port.
        !           101:  * Calls the pmap service remotely to do the un-mapping.
        !           102:  */
        !           103: bool_t
        !           104: pmap_unset(program, version)
        !           105:        u_long program;
        !           106:        u_long version;
        !           107: {
        !           108:        struct sockaddr_in myaddress;
        !           109:        int socket = -1;
        !           110:        register CLIENT *client;
        !           111:        struct pmap parms;
        !           112:        bool_t rslt;
        !           113: 
        !           114:        get_myaddress(&myaddress);
        !           115:        client = clntudp_create(&myaddress, PMAPPROG, PMAPVERS,
        !           116:            timeout, &socket);
        !           117:        if (client == (CLIENT *)NULL)
        !           118:                return (FALSE);
        !           119:        parms.pm_prog = program;
        !           120:        parms.pm_vers = version;
        !           121:        parms.pm_port = parms.pm_prot = 0;
        !           122:        CLNT_CALL(client, PMAPPROC_UNSET, xdr_pmap, &parms, xdr_bool, &rslt,
        !           123:            tottimeout);
        !           124:        CLNT_DESTROY(client);
        !           125:        (void)close(socket);
        !           126:        return (rslt);
        !           127: }
        !           128: 
        !           129: /* 
        !           130:  * don't use gethostbyname, which would invoke yellow pages
        !           131:  */
        !           132: get_myaddress(addr)
        !           133:        struct sockaddr_in *addr;
        !           134: {
        !           135:        int s;
        !           136:        char buf[BUFSIZ];
        !           137:        struct ifconf ifc;
        !           138:        struct ifreq ifreq, *ifr;
        !           139:        int len, slop;
        !           140: 
        !           141:        if ((s = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
        !           142:            perror("get_myaddress: socket");
        !           143:            exit(1);
        !           144:        }
        !           145:        ifc.ifc_len = sizeof (buf);
        !           146:        ifc.ifc_buf = buf;
        !           147:        if (ioctl(s, SIOCGIFCONF, (char *)&ifc) < 0) {
        !           148:                perror("get_myaddress: ioctl (get interface configuration)");
        !           149:                exit(1);
        !           150:        }
        !           151:        ifr = ifc.ifc_req;
        !           152:        for (len = ifc.ifc_len; len; len -= sizeof ifreq) {
        !           153:                ifreq = *ifr;
        !           154:                if (ioctl(s, SIOCGIFFLAGS, (char *)&ifreq) < 0) {
        !           155:                        perror("get_myaddress: ioctl");
        !           156:                        exit(1);
        !           157:                }
        !           158:                if ((ifreq.ifr_flags & IFF_UP) &&
        !           159:                    ifr->ifr_addr.sa_family == AF_INET) {
        !           160:                        *addr = *((struct sockaddr_in *)&ifr->ifr_addr);
        !           161:                        addr->sin_port = htons(PMAPPORT);
        !           162:                        break;
        !           163:                }
        !           164:                /*
        !           165:                 * Deal with variable length addresses
        !           166:                 */
        !           167:                slop = ifr->ifr_addr.sa_len - sizeof (struct sockaddr);
        !           168:                if (slop) {
        !           169:                        ifr = (struct ifreq *) ((caddr_t)ifr + slop);
        !           170:                        len -= slop;
        !           171:                }
        !           172:                ifr++;
        !           173:        }
        !           174:        close(s);
        !           175: }

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