1 /* @(#)clnt_perror.c 2.1 88/07/29 4.0 RPCSRC */
2 /*
3 * Copyright (c) 2010, Oracle America, Inc.
4 *
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions are met:
9 *
10 * * Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 *
13 * * Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
16 * distribution.
17 *
18 * * Neither the name of the "Oracle America, Inc." nor the names of
19 * its contributors may be used to endorse or promote products
20 * derived from this software without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
23 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
24 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
25 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
26 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
27 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
28 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
29 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
30 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
31 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
32 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 */
34 #if !defined(lint) && defined(SCCSIDS)
35 static char sccsid[] = "@(#)clnt_perror.c 1.15 87/10/07 Copyr 1984 Sun Micro";
36 #endif
37
38 /*
39 * clnt_perror.c
40 */
41 #include "autoconf.h"
42 #include <stdio.h>
43 #include <string.h>
44 #include <errno.h>
45
46 #include <gssrpc/types.h>
47 #include <gssrpc/auth.h>
48 #include <gssrpc/clnt.h>
49
50 #ifndef HAVE_STRERROR
51 #ifdef NEED_SYS_ERRLIST
52 extern char *sys_errlist[];
53 #endif
54 extern int sys_nerr;
55 #undef strerror
56 #define strerror(N) (((N) > 0 && (N) < sys_nerr) ? sys_errlist[N] : (char *)0)
57 #endif /* HAVE_STRERROR */
58 static char *auth_errmsg(enum auth_stat);
59
60
61
62 static char *buf;
63
64 static char *
get_buf(void)65 get_buf(void)
66 {
67 if (buf == NULL)
68 buf = (char *)malloc(BUFSIZ);
69 return (buf);
70 }
71
72 /*
73 * Print reply error info
74 */
75 char *
clnt_sperror(CLIENT * rpch,char * s)76 clnt_sperror(CLIENT *rpch, char *s)
77 {
78 struct rpc_err e;
79 char *err;
80 char *bufstart = get_buf();
81 char *str = bufstart;
82 char *strstart = str;
83 char *strend;
84
85 if (str == 0)
86 return (0);
87 strend = str + BUFSIZ;
88 CLNT_GETERR(rpch, &e);
89
90 strncpy (str, s, BUFSIZ - 1);
91 str[BUFSIZ - 1] = 0;
92 strncat (str, ": ", BUFSIZ - 1 - strlen (bufstart));
93 str += strlen(str);
94 strncat (str, clnt_sperrno(e.re_status), BUFSIZ - 1 - strlen (bufstart));
95 strstart[BUFSIZ - 1] = '\0';
96 str += strlen(str);
97
98 switch (e.re_status) {
99 case RPC_SUCCESS:
100 case RPC_CANTENCODEARGS:
101 case RPC_CANTDECODERES:
102 case RPC_TIMEDOUT:
103 case RPC_PROGUNAVAIL:
104 case RPC_PROCUNAVAIL:
105 case RPC_CANTDECODEARGS:
106 case RPC_SYSTEMERROR:
107 case RPC_UNKNOWNHOST:
108 case RPC_UNKNOWNPROTO:
109 case RPC_PMAPFAILURE:
110 case RPC_PROGNOTREGISTERED:
111 case RPC_FAILED:
112 break;
113
114 case RPC_CANTSEND:
115 case RPC_CANTRECV:
116 /* 10 for the string */
117 if (str - bufstart + 10 + strlen(strerror(e.re_errno)) < BUFSIZ)
118 (void) snprintf(str, strend-str, "; errno = %s",
119 strerror(e.re_errno));
120 str += strlen(str);
121 break;
122
123 case RPC_VERSMISMATCH:
124 /* 33 for the string, 22 for the numbers */
125 if(str - bufstart + 33 + 22 < BUFSIZ)
126 (void) snprintf(str, strend-str,
127 "; low version = %lu, high version = %lu",
128 (u_long) e.re_vers.low,
129 (u_long) e.re_vers.high);
130 str += strlen(str);
131 break;
132
133 case RPC_AUTHERROR:
134 err = auth_errmsg(e.re_why);
135 /* 8 for the string */
136 if(str - bufstart + 8 < BUFSIZ)
137 (void) snprintf(str, strend-str, "; why = ");
138 str += strlen(str);
139 if (err != NULL) {
140 if(str - bufstart + strlen(err) < BUFSIZ)
141 (void) snprintf(str, strend-str, "%s",err);
142 } else {
143 /* 33 for the string, 11 for the number */
144 if(str - bufstart + 33 + 11 < BUFSIZ)
145 (void) snprintf(str, strend-str,
146 "(unknown authentication error - %d)",
147 (int) e.re_why);
148 }
149 str += strlen(str);
150 break;
151
152 case RPC_PROGVERSMISMATCH:
153 /* 33 for the string, 22 for the numbers */
154 if(str - bufstart + 33 + 22 < BUFSIZ)
155 (void) snprintf(str, strend-str,
156 "; low version = %lu, high version = %lu",
157 (u_long) e.re_vers.low,
158 (u_long) e.re_vers.high);
159 str += strlen(str);
160 break;
161
162 default: /* unknown */
163 /* 14 for the string, 22 for the numbers */
164 if(str - bufstart + 14 + 22 < BUFSIZ)
165 (void) snprintf(str, strend-str,
166 "; s1 = %lu, s2 = %lu",
167 (u_long) e.re_lb.s1,
168 (u_long) e.re_lb.s2);
169 str += strlen(str);
170 break;
171 }
172 if (str - bufstart + 1 < BUFSIZ)
173 (void) snprintf(str, strend-str, "\n");
174 return(strstart) ;
175 }
176
177 void
clnt_perror(CLIENT * rpch,char * s)178 clnt_perror(CLIENT *rpch, char *s)
179 {
180 (void) fprintf(stderr,"%s",clnt_sperror(rpch,s));
181 }
182
183
184 struct rpc_errtab {
185 enum clnt_stat status;
186 char *message;
187 };
188
189 static struct rpc_errtab rpc_errlist[] = {
190 { RPC_SUCCESS,
191 "RPC: Success" },
192 { RPC_CANTENCODEARGS,
193 "RPC: Can't encode arguments" },
194 { RPC_CANTDECODERES,
195 "RPC: Can't decode result" },
196 { RPC_CANTSEND,
197 "RPC: Unable to send" },
198 { RPC_CANTRECV,
199 "RPC: Unable to receive" },
200 { RPC_TIMEDOUT,
201 "RPC: Timed out" },
202 { RPC_VERSMISMATCH,
203 "RPC: Incompatible versions of RPC" },
204 { RPC_AUTHERROR,
205 "RPC: Authentication error" },
206 { RPC_PROGUNAVAIL,
207 "RPC: Program unavailable" },
208 { RPC_PROGVERSMISMATCH,
209 "RPC: Program/version mismatch" },
210 { RPC_PROCUNAVAIL,
211 "RPC: Procedure unavailable" },
212 { RPC_CANTDECODEARGS,
213 "RPC: Server can't decode arguments" },
214 { RPC_SYSTEMERROR,
215 "RPC: Remote system error" },
216 { RPC_UNKNOWNHOST,
217 "RPC: Unknown host" },
218 { RPC_UNKNOWNPROTO,
219 "RPC: Unknown protocol" },
220 { RPC_PMAPFAILURE,
221 "RPC: Port mapper failure" },
222 { RPC_PROGNOTREGISTERED,
223 "RPC: Program not registered"},
224 { RPC_FAILED,
225 "RPC: Failed (unspecified error)"}
226 };
227
228
229 /*
230 * This interface for use by clntrpc
231 */
232 char *
clnt_sperrno(enum clnt_stat stat)233 clnt_sperrno(enum clnt_stat stat)
234 {
235 unsigned int i;
236
237 for (i = 0; i < sizeof(rpc_errlist)/sizeof(struct rpc_errtab); i++) {
238 if (rpc_errlist[i].status == stat) {
239 return (rpc_errlist[i].message);
240 }
241 }
242 return ("RPC: (unknown error code)");
243 }
244
245 void
clnt_perrno(enum clnt_stat num)246 clnt_perrno(enum clnt_stat num)
247 {
248 (void) fprintf(stderr,"%s",clnt_sperrno(num));
249 }
250
251
252 char *
clnt_spcreateerror(char * s)253 clnt_spcreateerror(char *s)
254 {
255 char *str = get_buf();
256 char *strend;
257
258 if (str == 0)
259 return(0);
260 strend = str+BUFSIZ;
261 (void) snprintf(str, strend-str, "%s: ", s);
262 str[BUFSIZ - 1] = '\0';
263 (void) strncat(str, clnt_sperrno(rpc_createerr.cf_stat), BUFSIZ - 1);
264 switch (rpc_createerr.cf_stat) {
265 case RPC_PMAPFAILURE:
266 (void) strncat(str, " - ", BUFSIZ - 1 - strlen(str));
267 (void) strncat(str,
268 clnt_sperrno(rpc_createerr.cf_error.re_status),
269 BUFSIZ - 1 - strlen(str));
270 break;
271
272 case RPC_SYSTEMERROR:
273 (void) strncat(str, " - ", BUFSIZ - 1 - strlen(str));
274 {
275 const char *m = strerror(rpc_createerr.cf_error.re_errno);
276 if (m)
277 (void) strncat(str, m, BUFSIZ - 1 - strlen(str));
278 else
279 (void) snprintf(&str[strlen(str)], BUFSIZ - strlen(str),
280 "Error %d",
281 rpc_createerr.cf_error.re_errno);
282 }
283 break;
284
285 case RPC_CANTSEND:
286 case RPC_CANTDECODERES:
287 case RPC_CANTENCODEARGS:
288 case RPC_SUCCESS:
289 case RPC_UNKNOWNPROTO:
290 case RPC_PROGNOTREGISTERED:
291 case RPC_FAILED:
292 case RPC_UNKNOWNHOST:
293 case RPC_CANTDECODEARGS:
294 case RPC_PROCUNAVAIL:
295 case RPC_PROGVERSMISMATCH:
296 case RPC_PROGUNAVAIL:
297 case RPC_AUTHERROR:
298 case RPC_VERSMISMATCH:
299 case RPC_TIMEDOUT:
300 case RPC_CANTRECV:
301 default:
302 break;
303 }
304 (void) strncat(str, "\n", BUFSIZ - 1 - strlen(str));
305 return (str);
306 }
307
308 void
clnt_pcreateerror(char * s)309 clnt_pcreateerror(char *s)
310 {
311 (void) fprintf(stderr,"%s",clnt_spcreateerror(s));
312 }
313
314 struct auth_errtab {
315 enum auth_stat status;
316 char *message;
317 };
318
319 static struct auth_errtab auth_errlist[] = {
320 { AUTH_OK,
321 "Authentication OK" },
322 { AUTH_BADCRED,
323 "Invalid client credential" },
324 { AUTH_REJECTEDCRED,
325 "Server rejected credential" },
326 { AUTH_BADVERF,
327 "Invalid client verifier" },
328 { AUTH_REJECTEDVERF,
329 "Server rejected verifier" },
330 { AUTH_TOOWEAK,
331 "Client credential too weak" },
332 { AUTH_INVALIDRESP,
333 "Invalid server verifier" },
334 { AUTH_FAILED,
335 "Failed (unspecified error)" },
336 };
337
338 static char *
auth_errmsg(enum auth_stat stat)339 auth_errmsg(enum auth_stat stat)
340 {
341 unsigned int i;
342
343 for (i = 0; i < sizeof(auth_errlist)/sizeof(struct auth_errtab); i++) {
344 if (auth_errlist[i].status == stat) {
345 return(auth_errlist[i].message);
346 }
347 }
348 return(NULL);
349 }
350