1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
|
/* $OpenBSD: clnt_perror.c,v 1.25 2019/07/03 03:24:04 deraadt Exp $ */
/*
* Copyright (c) 2010, Oracle America, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
* * Neither the name of the "Oracle America, Inc." nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <rpc/rpc.h>
#include <rpc/types.h>
#include <rpc/auth.h>
#include <rpc/clnt.h>
static char *auth_errmsg(enum auth_stat stat);
#define CLNT_PERROR_BUFLEN 256
static char buf[CLNT_PERROR_BUFLEN];
/*
* Print reply error info
*/
char *
clnt_sperror(CLIENT *rpch, char *s)
{
char *err, *str = buf;
struct rpc_err e;
int ret, len = CLNT_PERROR_BUFLEN;
CLNT_GETERR(rpch, &e);
ret = snprintf(str, len, "%s: %s", s, clnt_sperrno(e.re_status));
if (ret < 0)
ret = 0;
else if (ret >= len)
goto truncated;
str += ret;
len -= ret;
switch (e.re_status) {
case RPC_SUCCESS:
case RPC_CANTENCODEARGS:
case RPC_CANTDECODERES:
case RPC_TIMEDOUT:
case RPC_PROGUNAVAIL:
case RPC_PROCUNAVAIL:
case RPC_CANTDECODEARGS:
case RPC_SYSTEMERROR:
case RPC_UNKNOWNHOST:
case RPC_UNKNOWNPROTO:
case RPC_PMAPFAILURE:
case RPC_PROGNOTREGISTERED:
case RPC_FAILED:
break;
case RPC_CANTSEND:
case RPC_CANTRECV:
ret = snprintf(str, len, "; errno = %s", strerror(e.re_errno));
if (ret < 0 || ret >= len)
goto truncated;
break;
case RPC_VERSMISMATCH:
ret = snprintf(str, len,
"; low version = %u, high version = %u",
e.re_vers.low, e.re_vers.high);
if (ret < 0 || ret >= len)
goto truncated;
break;
case RPC_AUTHERROR:
ret = snprintf(str, len, "; why = ");
if (ret < 0)
ret = 0;
else if (ret >= len)
goto truncated;
str += ret;
len -= ret;
err = auth_errmsg(e.re_why);
if (err != NULL) {
ret = snprintf(str, len, "%s", err);
if (ret < 0 || ret >= len)
goto truncated;
} else {
ret = snprintf(str, len,
"(unknown authentication error - %d)",
(int) e.re_why);
if (ret < 0 || ret >= len)
goto truncated;
}
break;
case RPC_PROGVERSMISMATCH:
ret = snprintf(str, len,
"; low version = %u, high version = %u",
e.re_vers.low, e.re_vers.high);
if (ret < 0 || ret >= len)
goto truncated;
break;
default: /* unknown */
ret = snprintf(str, len, "; s1 = %u, s2 = %u",
e.re_lb.s1, e.re_lb.s2);
if (ret < 0 || ret >= len)
goto truncated;
break;
}
if (strlcat(buf, "\n", CLNT_PERROR_BUFLEN) >= CLNT_PERROR_BUFLEN)
goto truncated;
return (buf);
truncated:
snprintf(buf + CLNT_PERROR_BUFLEN - 5, 5, "...\n");
return (buf);
}
DEF_WEAK(clnt_sperror);
void
clnt_perror(CLIENT *rpch, char *s)
{
(void) fprintf(stderr, "%s", clnt_sperror(rpch, s));
}
DEF_WEAK(clnt_perror);
static const char *const rpc_errlist[] = {
"RPC: Success", /* 0 - RPC_SUCCESS */
"RPC: Can't encode arguments", /* 1 - RPC_CANTENCODEARGS */
"RPC: Can't decode result", /* 2 - RPC_CANTDECODERES */
"RPC: Unable to send", /* 3 - RPC_CANTSEND */
"RPC: Unable to receive", /* 4 - RPC_CANTRECV */
"RPC: Timed out", /* 5 - RPC_TIMEDOUT */
"RPC: Incompatible versions of RPC", /* 6 - RPC_VERSMISMATCH */
"RPC: Authentication error", /* 7 - RPC_AUTHERROR */
"RPC: Program unavailable", /* 8 - RPC_PROGUNAVAIL */
"RPC: Program/version mismatch", /* 9 - RPC_PROGVERSMISMATCH */
"RPC: Procedure unavailable", /* 10 - RPC_PROCUNAVAIL */
"RPC: Server can't decode arguments", /* 11 - RPC_CANTDECODEARGS */
"RPC: Remote system error", /* 12 - RPC_SYSTEMERROR */
"RPC: Unknown host", /* 13 - RPC_UNKNOWNHOST */
"RPC: Port mapper failure", /* 14 - RPC_PMAPFAILURE */
"RPC: Program not registered", /* 15 - RPC_PROGNOTREGISTERED */
"RPC: Failed (unspecified error)", /* 16 - RPC_FAILED */
"RPC: Unknown protocol" /* 17 - RPC_UNKNOWNPROTO */
};
/*
* This interface for use by clntrpc
*/
char *
clnt_sperrno(enum clnt_stat stat)
{
unsigned int errnum = stat;
if (errnum < (sizeof(rpc_errlist)/sizeof(rpc_errlist[0])))
return (char *)rpc_errlist[errnum];
return ("RPC: (unknown error code)");
}
DEF_WEAK(clnt_sperrno);
void
clnt_perrno(enum clnt_stat num)
{
(void) fprintf(stderr, "%s\n", clnt_sperrno(num));
}
char *
clnt_spcreateerror(char *s)
{
switch (rpc_createerr.cf_stat) {
case RPC_PMAPFAILURE:
(void) snprintf(buf, CLNT_PERROR_BUFLEN, "%s: %s - %s\n", s,
clnt_sperrno(rpc_createerr.cf_stat),
clnt_sperrno(rpc_createerr.cf_error.re_status));
break;
case RPC_SYSTEMERROR:
(void) snprintf(buf, CLNT_PERROR_BUFLEN, "%s: %s - %s\n", s,
clnt_sperrno(rpc_createerr.cf_stat),
strerror(rpc_createerr.cf_error.re_errno));
break;
default:
(void) snprintf(buf, CLNT_PERROR_BUFLEN, "%s: %s\n", s,
clnt_sperrno(rpc_createerr.cf_stat));
break;
}
buf[CLNT_PERROR_BUFLEN-2] = '\n';
buf[CLNT_PERROR_BUFLEN-1] = '\0';
return (buf);
}
DEF_WEAK(clnt_spcreateerror);
void
clnt_pcreateerror(char *s)
{
fprintf(stderr, "%s", clnt_spcreateerror(s));
}
DEF_WEAK(clnt_pcreateerror);
static const char *const auth_errlist[] = {
"Authentication OK", /* 0 - AUTH_OK */
"Invalid client credential", /* 1 - AUTH_BADCRED */
"Server rejected credential", /* 2 - AUTH_REJECTEDCRED */
"Invalid client verifier", /* 3 - AUTH_BADVERF */
"Server rejected verifier", /* 4 - AUTH_REJECTEDVERF */
"Client credential too weak", /* 5 - AUTH_TOOWEAK */
"Invalid server verifier", /* 6 - AUTH_INVALIDRESP */
"Failed (unspecified error)" /* 7 - AUTH_FAILED */
};
static char *
auth_errmsg(enum auth_stat stat)
{
unsigned int errnum = stat;
if (errnum < (sizeof(auth_errlist)/sizeof(auth_errlist[0])))
return (char *)auth_errlist[errnum];
return (NULL);
}
|
