1 /* 2 * Copyright (c) 1988-1999 by Sun Microsystems, Inc. 3 * All rights reserved. 4 */ 5 6 #include <stdio.h> 7 #include <stdlib.h> 8 #include <rpc/rpc.h> 9 #include <errno.h> 10 #include <syslog.h> 11 #include <rpc/nettype.h> 12 #include <netconfig.h> 13 #include <netdir.h> 14 #include <tiuser.h> 15 #include <fcntl.h> 16 #include <string.h> 17 #include <rpc/svc.h> 18 #include <locale.h> 19 20 extern int __rpc_negotiate_uid(int); 21 22 /* 23 * The highest level interface for server creation. 24 * Copied from svc_generic.c and cmd/keyserv/key_generic.c, but adapted 25 * to work only for TPI_CLTS semantics, and to be called only once 26 * from kwarnd.c. Returns 1 (interface created) on success and 0 27 * (no interfaces created) on failure. 28 */ 29 int 30 svc_create_local_service(void (*dispatch) (), /* Dispatch function */ 31 u_long prognum, /* Program number */ 32 u_long versnum, /* Version number */ 33 char *nettype, /* Networktype token */ 34 char *servname) /* name of the srvc */ 35 { 36 int num = 0; 37 SVCXPRT *xprt; 38 struct netconfig *nconf; 39 struct t_bind *bind_addr; 40 void *net; 41 int fd; 42 struct nd_hostserv ns; 43 struct nd_addrlist *nas; 44 45 if ((net = __rpc_setconf(nettype)) == 0) { 46 (void) syslog(LOG_ERR, 47 gettext("svc_create: could not read netconfig database")); 48 return (0); 49 } 50 while (nconf = __rpc_getconf(net)) { 51 if ((strcmp(nconf->nc_protofmly, NC_LOOPBACK)) || 52 (nconf->nc_semantics != NC_TPI_COTS_ORD)) 53 continue; 54 55 if ((fd = t_open(nconf->nc_device, O_RDWR, NULL)) < 0) { 56 (void) syslog(LOG_ERR, 57 gettext("svc_create: %s: cannot open connection: %s"), 58 nconf->nc_netid, t_errlist[t_errno]); 59 break; 60 } 61 62 /* 63 * Negotiate for returning the uid of the caller. 64 * This should be done before enabling the endpoint for 65 * service via t_bind() (called in svc_tli_create()) 66 * so that requests to kwarnd contain the uid. 67 */ 68 if (__rpc_negotiate_uid(fd) != 0) { 69 syslog(LOG_ERR, 70 gettext("Could not negotiate for" 71 " uid with loopback transport %s"), 72 nconf->nc_netid); 73 t_close(fd); 74 break; 75 } 76 77 /* LINTED pointer alignment */ 78 bind_addr = (struct t_bind *) t_alloc(fd, T_BIND, T_ADDR); 79 if ((bind_addr == NULL)) { 80 (void) t_close(fd); 81 (void) syslog(LOG_ERR, 82 gettext("svc_create: t_alloc failed\n")); 83 break; 84 } 85 ns.h_host = HOST_SELF; 86 ns.h_serv = servname; 87 if (!netdir_getbyname(nconf, &ns, &nas)) { 88 /* Copy the address */ 89 bind_addr->addr.len = nas->n_addrs->len; 90 (void) memcpy(bind_addr->addr.buf, nas->n_addrs->buf, 91 (int) nas->n_addrs->len); 92 bind_addr->qlen = 8; 93 netdir_free((char *) nas, ND_ADDRLIST); 94 } else { 95 (void) syslog(LOG_ERR, 96 gettext("svc_create: no well known " 97 "address for %s on %s\n"), 98 servname, nconf->nc_netid); 99 (void) t_free((char *) bind_addr, T_BIND); 100 bind_addr = NULL; 101 } 102 103 xprt = svc_tli_create(fd, nconf, bind_addr, 0, 0); 104 if (bind_addr) 105 (void) t_free((char *) bind_addr, T_BIND); 106 if (xprt == NULL) { 107 (void) t_close(fd); 108 (void) syslog(LOG_ERR, 109 gettext("svc_create: svc_tli_create failed\n")); 110 break; 111 } else { 112 (void) rpcb_unset(prognum, versnum, nconf); 113 if (svc_reg(xprt, prognum, versnum, dispatch, nconf) 114 == FALSE) { 115 (void) syslog(LOG_ERR, 116 gettext("svc_create: cannot" 117 " register %d vers %d on %s"), 118 prognum, versnum, nconf->nc_netid); 119 SVC_DESTROY(xprt); /* also t_closes fd */ 120 break; 121 } 122 num = 1; 123 break; 124 } 125 } 126 __rpc_endconf(net); 127 return (num); 128 } 129