/*
 *	$Id: clnt_perror.c,v 4.2 1994/09/29 23:48:50 jraja Exp $
 *
 *	Copyright © 1994 AmiTCP/IP Group,
 *			 Network Solutions Development Inc.
 *			 All rights reserved.
 */

/* @(#)clnt_perror.c    2.1 88/07/29 4.0 RPCSRC */
#if !defined(lint) && defined(SCCSIDS)
static char sccsid[] = "@(#)clnt_perror.c 1.15 87/10/07 Copyr 1984 Sun Micro";
#endif

/*
 * Copyright (C) 1984, Sun Microsystems, Inc.
 */
#include <sys/param.h>
#include <rpc/types.h>
#include <rpc/xdr.h>
#include <rpc/auth.h>
#include <rpc/clnt.h>
#include <stdio.h>
#include <errno.h>


#ifdef __GNUC__
#define __sys_nerr sys_errlist
#endif
extern char *__sys_nerr[];

static char *auth_errmsg(enum auth_stat stat);

static char *buf;

static char *
_buf(void)
{

	if (buf == 0)
		buf = (char *)mem_alloc(256);
	return (buf);
}

/*
 * Print reply error info
 */
char *
clnt_sperror(rpch, s)
	CLIENT *rpch;
	char *s;
{
	struct rpc_err e;
	void clnt_perrno();
	char *err;
	char *str = _buf();
	char *strstart = str;

	if (str == 0)
		return (0);
	CLNT_GETERR(rpch, &e);

	(void) sprintf(str, "%s: ", s);
	str += strlen(str);

	(void) strcpy(str, clnt_sperrno(e.re_status));
	str += strlen(str);

	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:
		(void) sprintf(str, "; errno = %s",
		    strerror(e.re_errno));
		str += strlen(str);
		break;

	case RPC_VERSMISMATCH:
		(void) sprintf(str,
			"; low version = %lu, high version = %lu",
			e.re_vers.low, e.re_vers.high);
		str += strlen(str);
		break;

	case RPC_AUTHERROR:
		err = auth_errmsg(e.re_why);
		(void) sprintf(str,"; why = ");
		str += strlen(str);
		if (err != NULL) {
			(void) sprintf(str, "%s",err);
		} else {
			(void) sprintf(str,
				"(unknown authentication error - %ld)",
				(int) e.re_why);
		}
		str += strlen(str);
		break;

	case RPC_PROGVERSMISMATCH:
		(void) sprintf(str,
			"; low version = %lu, high version = %lu",
			e.re_vers.low, e.re_vers.high);
		str += strlen(str);
		break;

	default:	/* unknown */
		(void) sprintf(str,
			"; s1 = %lu, s2 = %lu",
			e.re_lb.s1, e.re_lb.s2);
		str += strlen(str);
		break;
	}
	(void) sprintf(str, "\n");
	return(strstart) ;
}

void
clnt_perror(rpch, s)
	CLIENT *rpch;
	char *s;
{
	(void) fprintf(stderr,"%s",clnt_sperror(rpch,s));
}


struct rpc_errtab {
	enum clnt_stat status;
	char *message;
};

static struct rpc_errtab  rpc_errlist[] = {
	{ RPC_SUCCESS,
		"RPC: Success" },
	{ RPC_CANTENCODEARGS,
		"RPC: Can't encode arguments" },
	{ RPC_CANTDECODERES,
		"RPC: Can't decode result" },
	{ RPC_CANTSEND,
		"RPC: Unable to send" },
	{ RPC_CANTRECV,
		"RPC: Unable to receive" },
	{ RPC_TIMEDOUT,
		"RPC: Timed out" },
	{ RPC_VERSMISMATCH,
		"RPC: Incompatible versions of RPC" },
	{ RPC_AUTHERROR,
		"RPC: Authentication error" },
	{ RPC_PROGUNAVAIL,
		"RPC: Program unavailable" },
	{ RPC_PROGVERSMISMATCH,
		"RPC: Program/version mismatch" },
	{ RPC_PROCUNAVAIL,
		"RPC: Procedure unavailable" },
	{ RPC_CANTDECODEARGS,
		"RPC: Server can't decode arguments" },
	{ RPC_SYSTEMERROR,
		"RPC: Remote system error" },
	{ RPC_UNKNOWNHOST,
		"RPC: Unknown host" },
	{ RPC_UNKNOWNPROTO,
		"RPC: Unknown protocol" },
	{ RPC_PMAPFAILURE,
		"RPC: Port mapper failure" },
	{ RPC_PROGNOTREGISTERED,
		"RPC: Program not registered"},
	{ RPC_FAILED,
		"RPC: Failed (unspecified error)"}
};


/*
 * This interface for use by clntrpc
 */
char *
clnt_sperrno(stat)
	enum clnt_stat stat;
{
	int i;

	for (i = 0; i < sizeof(rpc_errlist)/sizeof(struct rpc_errtab); i++) {
		if (rpc_errlist[i].status == stat) {
			return (rpc_errlist[i].message);
		}
	}
	return ("RPC: (unknown error code)");
}

void
clnt_perrno(num)
	enum clnt_stat num;
{
	(void) fprintf(stderr,"%s",clnt_sperrno(num));
}


char *
clnt_spcreateerror(s)
	char *s;
{
	char *str = _buf();

	if (str == 0)
		return(0);
	(void) sprintf(str, "%s: ", s);
	(void) strcat(str, clnt_sperrno(rpc_createerr.cf_stat));
	switch (rpc_createerr.cf_stat) {
	case RPC_PMAPFAILURE:
		(void) strcat(str, " - ");
		(void) strcat(str,
		    clnt_sperrno(rpc_createerr.cf_error.re_status));
		break;

	case RPC_SYSTEMERROR:
		(void) strcat(str, " - ");
		if (rpc_createerr.cf_error.re_errno > 0
		    && rpc_createerr.cf_error.re_errno < __sys_nerr)
			(void) strcat(str,
			    strerror(rpc_createerr.cf_error.re_errno));
		else
			(void) sprintf(&str[strlen(str)], "Error %ld",
			    rpc_createerr.cf_error.re_errno);
		break;
	}
	(void) strcat(str, "\n");
	return (str);
}

void
clnt_pcreateerror(s)
	char *s;
{
	(void) fprintf(stderr,"%s",clnt_spcreateerror(s));
}

struct auth_errtab {
	enum auth_stat status;
	char *message;
};

static struct auth_errtab auth_errlist[] = {
	{ AUTH_OK,
		"Authentication OK" },
	{ AUTH_BADCRED,
		"Invalid client credential" },
	{ AUTH_REJECTEDCRED,
		"Server rejected credential" },
	{ AUTH_BADVERF,
		"Invalid client verifier" },
	{ AUTH_REJECTEDVERF,
		"Server rejected verifier" },
	{ AUTH_TOOWEAK,
		"Client credential too weak" },
	{ AUTH_INVALIDRESP,
		"Invalid server verifier" },
	{ AUTH_FAILED,
		"Failed (unspecified error)" },
};

static char *
auth_errmsg(stat)
	enum auth_stat stat;
{
	int i;

	for (i = 0; i < sizeof(auth_errlist)/sizeof(struct auth_errtab); i++) {
		if (auth_errlist[i].status == stat) {
			return(auth_errlist[i].message);
		}
	}
	return(NULL);
}