diff options
Diffstat (limited to 'sunrpc/clnt_gen.c')
| -rw-r--r-- | sunrpc/clnt_gen.c | 70 |
1 files changed, 50 insertions, 20 deletions
diff --git a/sunrpc/clnt_gen.c b/sunrpc/clnt_gen.c index e54e77828b..d7b949caa6 100644 --- a/sunrpc/clnt_gen.c +++ b/sunrpc/clnt_gen.c @@ -6,11 +6,11 @@ * may copy or modify Sun RPC without charge, but are not authorized * to license or distribute it to anyone else except as part of a product or * program developed by the user. - * + * * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. - * + * * Sun RPC is provided with no support and without any obligation on the * part of Sun Microsystems, Inc. to assist in its use, correction, * modification or enhancement. @@ -18,11 +18,11 @@ * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC * OR ANY PART THEREOF. - * + * * In no event will Sun Microsystems, Inc. be liable for any lost revenue * or profits or other special, indirect and consequential damages, even if * Sun has been advised of the possibility of such damages. - * + * * Sun Microsystems, Inc. * 2550 Garcia Avenue * Mountain View, California 94043 @@ -33,6 +33,8 @@ static char sccsid[] = "@(#)clnt_generic.c 1.4 87/08/11 (C) 1987 SMI"; /* * Copyright (C) 1987, Sun Microsystems, Inc. */ +#include <alloca.h> +#include <errno.h> #include <rpc/rpc.h> #include <sys/socket.h> #include <sys/errno.h> @@ -40,7 +42,7 @@ static char sccsid[] = "@(#)clnt_generic.c 1.4 87/08/11 (C) 1987 SMI"; /* * Generic client creation: takes (hostname, program-number, protocol) and - * returns client handle. Default options are set, which the user can + * returns client handle. Default options are set, which the user can * change using the rpc equivalent of ioctl()'s. */ CLIENT * @@ -50,36 +52,64 @@ clnt_create(hostname, prog, vers, proto) unsigned vers; char *proto; { - struct hostent *h; - struct protoent *p; + struct hostent hostbuf, *h; + size_t hstbuflen; + char *hsttmpbuf; + struct protoent protobuf, *p; + size_t prtbuflen; + char *prttmpbuf; struct sockaddr_in sin; int sock; struct timeval tv; CLIENT *client; + int herr; + + hstbuflen = 1024; + hsttmpbuf = __alloca (hstbuflen); + while (__gethostbyname_r (hostname, &hostbuf, hsttmpbuf, hstbuflen, + &h, &herr) < 0) + if (herr != NETDB_INTERNAL || errno != ERANGE) + { + rpc_createerr.cf_stat = RPC_UNKNOWNHOST; + return NULL; + } + else + { + /* Enlarge the buffer. */ + hstbuflen *= 2; + hsttmpbuf = __alloca (hstbuflen); + } - h = gethostbyname(hostname); - if (h == NULL) { - rpc_createerr.cf_stat = RPC_UNKNOWNHOST; - return (NULL); - } if (h->h_addrtype != AF_INET) { /* * Only support INET for now */ rpc_createerr.cf_stat = RPC_SYSTEMERROR; - rpc_createerr.cf_error.re_errno = EAFNOSUPPORT; + rpc_createerr.cf_error.re_errno = EAFNOSUPPORT; return (NULL); } sin.sin_family = h->h_addrtype; sin.sin_port = 0; bzero(sin.sin_zero, sizeof(sin.sin_zero)); bcopy(h->h_addr, (char*)&sin.sin_addr, h->h_length); - p = getprotobyname(proto); - if (p == NULL) { - rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; - rpc_createerr.cf_error.re_errno = EPFNOSUPPORT; - return (NULL); - } + + prtbuflen = 1024; + prttmpbuf = __alloca (prtbuflen); + while (__getprotobyname_r (proto, &protobuf, prttmpbuf, prtbuflen, &p) + < 0) + if (errno != ERANGE) + { + rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; + rpc_createerr.cf_error.re_errno = EPFNOSUPPORT; + return NULL; + } + else + { + /* Enlarge the buffer. */ + prtbuflen *= 2; + prttmpbuf = __alloca (prtbuflen); + } + sock = RPC_ANYSOCK; switch (p->p_proto) { case IPPROTO_UDP: @@ -103,7 +133,7 @@ clnt_create(hostname, prog, vers, proto) break; default: rpc_createerr.cf_stat = RPC_SYSTEMERROR; - rpc_createerr.cf_error.re_errno = EPFNOSUPPORT; + rpc_createerr.cf_error.re_errno = EPFNOSUPPORT; return (NULL); } return (client); |