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/* $OpenBSD: clnt_perror.c,v 1.23 2010/09/01 14:43:34 millert 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 == -1)
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 == -1 || 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 == -1 || ret >= len)
goto truncated;
break;
case RPC_AUTHERROR:
ret = snprintf(str, len, "; why = ");
if (ret == -1)
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 == -1 || ret >= len)
goto truncated;
} else {
ret = snprintf(str, len,
"(unknown authentication error - %d)",
(int) e.re_why);
if (ret == -1 || 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 == -1 || 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 == -1 || 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);
}
void
clnt_perror(CLIENT *rpch, char *s)
{
(void) fprintf(stderr, "%s", clnt_sperror(rpch, s));
}
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)");
}
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);
}
void
clnt_pcreateerror(char *s)
{
fprintf(stderr, "%s", clnt_spcreateerror(s));
}
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);
}
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