1/*	$NetBSD: clnt_perror.c,v 1.24 2000/06/02 23:11:07 fvdl Exp $	*/
2
3
4/*
5 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
6 * unrestricted use provided that this legend is included on all tape
7 * media and as a part of the software program in whole or part.  Users
8 * may copy or modify Sun RPC without charge, but are not authorized
9 * to license or distribute it to anyone else except as part of a product or
10 * program developed by the user.
11 *
12 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
13 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
14 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
15 *
16 * Sun RPC is provided with no support and without any obligation on the
17 * part of Sun Microsystems, Inc. to assist in its use, correction,
18 * modification or enhancement.
19 *
20 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
21 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
22 * OR ANY PART THEREOF.
23 *
24 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
25 * or profits or other special, indirect and consequential damages, even if
26 * Sun has been advised of the possibility of such damages.
27 *
28 * Sun Microsystems, Inc.
29 * 2550 Garcia Avenue
30 * Mountain View, California  94043
31 */
32
33#if defined(LIBC_SCCS) && !defined(lint)
34static char *sccsid2 = "@(#)clnt_perror.c 1.15 87/10/07 Copyr 1984 Sun Micro";
35static char *sccsid = "@(#)clnt_perror.c	2.1 88/07/29 4.0 RPCSRC";
36#endif
37#include <sys/cdefs.h>
38__FBSDID("$FreeBSD$");
39
40/*
41 * clnt_perror.c
42 *
43 * Copyright (C) 1984, Sun Microsystems, Inc.
44 *
45 */
46#include "namespace.h"
47#include <assert.h>
48#include <stdio.h>
49#include <stdlib.h>
50#include <string.h>
51
52#include <rpc/rpc.h>
53#include <rpc/types.h>
54#include <rpc/auth.h>
55#include <rpc/clnt.h>
56#include "un-namespace.h"
57
58static char *buf;
59
60static char *_buf(void);
61static char *auth_errmsg(enum auth_stat);
62#define CLNT_PERROR_BUFLEN 256
63
64static char *
65_buf()
66{
67
68	if (buf == 0)
69		buf = (char *)malloc(CLNT_PERROR_BUFLEN);
70	return (buf);
71}
72
73/*
74 * Print reply error info
75 */
76char *
77clnt_sperror(rpch, s)
78	CLIENT *rpch;
79	const char *s;
80{
81	struct rpc_err e;
82	char *err;
83	char *str;
84	char *strstart;
85	size_t len, i;
86
87	assert(rpch != NULL);
88	assert(s != NULL);
89
90	str = _buf(); /* side effect: sets CLNT_PERROR_BUFLEN */
91	if (str == 0)
92		return (0);
93	len = CLNT_PERROR_BUFLEN;
94	strstart = str;
95	CLNT_GETERR(rpch, &e);
96
97	if ((i = snprintf(str, len, "%s: ", s)) > 0) {
98		str += i;
99		len -= i;
100	}
101
102	(void)strncpy(str, clnt_sperrno(e.re_status), len - 1);
103	i = strlen(str);
104	str += i;
105	len -= i;
106
107	switch (e.re_status) {
108	case RPC_SUCCESS:
109	case RPC_CANTENCODEARGS:
110	case RPC_CANTDECODERES:
111	case RPC_TIMEDOUT:
112	case RPC_PROGUNAVAIL:
113	case RPC_PROCUNAVAIL:
114	case RPC_CANTDECODEARGS:
115	case RPC_SYSTEMERROR:
116	case RPC_UNKNOWNHOST:
117	case RPC_UNKNOWNPROTO:
118	case RPC_PMAPFAILURE:
119	case RPC_PROGNOTREGISTERED:
120	case RPC_FAILED:
121		break;
122
123	case RPC_CANTSEND:
124	case RPC_CANTRECV:
125		i = snprintf(str, len, "; errno = %s", strerror(e.re_errno));
126		if (i > 0) {
127			str += i;
128			len -= i;
129		}
130		break;
131
132	case RPC_VERSMISMATCH:
133		i = snprintf(str, len, "; low version = %u, high version = %u",
134			e.re_vers.low, e.re_vers.high);
135		if (i > 0) {
136			str += i;
137			len -= i;
138		}
139		break;
140
141	case RPC_AUTHERROR:
142		err = auth_errmsg(e.re_why);
143		i = snprintf(str, len, "; why = ");
144		if (i > 0) {
145			str += i;
146			len -= i;
147		}
148		if (err != NULL) {
149			i = snprintf(str, len, "%s",err);
150		} else {
151			i = snprintf(str, len,
152				"(unknown authentication error - %d)",
153				(int) e.re_why);
154		}
155		if (i > 0) {
156			str += i;
157			len -= i;
158		}
159		break;
160
161	case RPC_PROGVERSMISMATCH:
162		i = snprintf(str, len, "; low version = %u, high version = %u",
163			e.re_vers.low, e.re_vers.high);
164		if (i > 0) {
165			str += i;
166			len -= i;
167		}
168		break;
169
170	default:	/* unknown */
171		i = snprintf(str, len, "; s1 = %u, s2 = %u",
172			e.re_lb.s1, e.re_lb.s2);
173		if (i > 0) {
174			str += i;
175			len -= i;
176		}
177		break;
178	}
179	strstart[CLNT_PERROR_BUFLEN-1] = '\0';
180	return(strstart) ;
181}
182
183void
184clnt_perror(rpch, s)
185	CLIENT *rpch;
186	const char *s;
187{
188
189	assert(rpch != NULL);
190	assert(s != NULL);
191
192	(void) fprintf(stderr, "%s\n", clnt_sperror(rpch,s));
193}
194
195static const char *const rpc_errlist[] = {
196	"RPC: Success",				/*  0 - RPC_SUCCESS */
197	"RPC: Can't encode arguments",		/*  1 - RPC_CANTENCODEARGS */
198	"RPC: Can't decode result",		/*  2 - RPC_CANTDECODERES */
199	"RPC: Unable to send",			/*  3 - RPC_CANTSEND */
200	"RPC: Unable to receive",		/*  4 - RPC_CANTRECV */
201	"RPC: Timed out",			/*  5 - RPC_TIMEDOUT */
202	"RPC: Incompatible versions of RPC",	/*  6 - RPC_VERSMISMATCH */
203	"RPC: Authentication error",		/*  7 - RPC_AUTHERROR */
204	"RPC: Program unavailable",		/*  8 - RPC_PROGUNAVAIL */
205	"RPC: Program/version mismatch",	/*  9 - RPC_PROGVERSMISMATCH */
206	"RPC: Procedure unavailable",		/* 10 - RPC_PROCUNAVAIL */
207	"RPC: Server can't decode arguments",	/* 11 - RPC_CANTDECODEARGS */
208	"RPC: Remote system error",		/* 12 - RPC_SYSTEMERROR */
209	"RPC: Unknown host",			/* 13 - RPC_UNKNOWNHOST */
210	"RPC: Port mapper failure",		/* 14 - RPC_PMAPFAILURE */
211	"RPC: Program not registered",		/* 15 - RPC_PROGNOTREGISTERED */
212	"RPC: Failed (unspecified error)",	/* 16 - RPC_FAILED */
213	"RPC: Unknown protocol"			/* 17 - RPC_UNKNOWNPROTO */
214};
215
216
217/*
218 * This interface for use by clntrpc
219 */
220char *
221clnt_sperrno(stat)
222	enum clnt_stat stat;
223{
224	unsigned int errnum = stat;
225
226	if (errnum < (sizeof(rpc_errlist)/sizeof(rpc_errlist[0])))
227		/* LINTED interface problem */
228		return (char *)rpc_errlist[errnum];
229
230	return ("RPC: (unknown error code)");
231}
232
233void
234clnt_perrno(num)
235	enum clnt_stat num;
236{
237	(void) fprintf(stderr, "%s\n", clnt_sperrno(num));
238}
239
240
241char *
242clnt_spcreateerror(s)
243	const char *s;
244{
245	char *str;
246	size_t len, i;
247
248	assert(s != NULL);
249
250	str = _buf(); /* side effect: sets CLNT_PERROR_BUFLEN */
251	if (str == 0)
252		return(0);
253	len = CLNT_PERROR_BUFLEN;
254	i = snprintf(str, len, "%s: ", s);
255	if (i > 0)
256		len -= i;
257	(void)strncat(str, clnt_sperrno(rpc_createerr.cf_stat), len - 1);
258	switch (rpc_createerr.cf_stat) {
259	case RPC_PMAPFAILURE:
260		(void) strncat(str, " - ", len - 1);
261		(void) strncat(str,
262		    clnt_sperrno(rpc_createerr.cf_error.re_status), len - 4);
263		break;
264
265	case RPC_SYSTEMERROR:
266		(void)strncat(str, " - ", len - 1);
267		(void)strncat(str, strerror(rpc_createerr.cf_error.re_errno),
268		    len - 4);
269		break;
270
271	case RPC_CANTSEND:
272	case RPC_CANTDECODERES:
273	case RPC_CANTENCODEARGS:
274	case RPC_SUCCESS:
275	case RPC_UNKNOWNPROTO:
276	case RPC_PROGNOTREGISTERED:
277	case RPC_FAILED:
278	case RPC_UNKNOWNHOST:
279	case RPC_CANTDECODEARGS:
280	case RPC_PROCUNAVAIL:
281	case RPC_PROGVERSMISMATCH:
282	case RPC_PROGUNAVAIL:
283	case RPC_AUTHERROR:
284	case RPC_VERSMISMATCH:
285	case RPC_TIMEDOUT:
286	case RPC_CANTRECV:
287	default:
288		break;
289	}
290	str[CLNT_PERROR_BUFLEN-1] = '\0';
291	return (str);
292}
293
294void
295clnt_pcreateerror(s)
296	const char *s;
297{
298
299	assert(s != NULL);
300
301	(void) fprintf(stderr, "%s\n", clnt_spcreateerror(s));
302}
303
304static const char *const auth_errlist[] = {
305	"Authentication OK",			/* 0 - AUTH_OK */
306	"Invalid client credential",		/* 1 - AUTH_BADCRED */
307	"Server rejected credential",		/* 2 - AUTH_REJECTEDCRED */
308	"Invalid client verifier", 		/* 3 - AUTH_BADVERF */
309	"Server rejected verifier", 		/* 4 - AUTH_REJECTEDVERF */
310	"Client credential too weak",		/* 5 - AUTH_TOOWEAK */
311	"Invalid server verifier",		/* 6 - AUTH_INVALIDRESP */
312	"Failed (unspecified error)",		/* 7 - AUTH_FAILED */
313	"Kerberos generic error",		/* 8 - AUTH_KERB_GENERIC*/
314	"Kerberos credential expired",		/* 9 - AUTH_TIMEEXPIRE */
315	"Bad kerberos ticket file",		/* 10 - AUTH_TKT_FILE */
316	"Can't decode kerberos authenticator",	/* 11 - AUTH_DECODE */
317	"Address wrong in kerberos ticket",	/* 12 - AUTH_NET_ADDR */
318	"GSS-API crediential problem",		/* 13 - RPCSEC_GSS_CREDPROBLEM */
319	"GSS-API context problem"		/* 14 - RPCSEC_GSS_CTXPROBLEM */
320};
321
322static char *
323auth_errmsg(stat)
324	enum auth_stat stat;
325{
326	unsigned int errnum = stat;
327
328	if (errnum < (sizeof(auth_errlist)/sizeof(auth_errlist[0])))
329		/* LINTED interface problem */
330		return (char *)auth_errlist[errnum];
331
332	return(NULL);
333}
334