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freebsd-skq/sbin/iscontrol/config.c
Dag-Erling Smørgrav c201d4532c - Add full support for header / data digests. 
- Increase target limit from 4 to 64; this limit will be removed entirely
  at a later time.
- Improve recovery from lost network connections.
- Fix some potential deadlocks and a serious memory leak.
- Fix incorrect use of MH_ALIGN (instead of M_ALIGN), which makes no
  practical difference, but triggers a KASSERT with INVARIANTS.
- Fix some warnings in iscontrol(8) and improve the man page somewhat.

Submitted by:	Daniel Braniss <danny@cs.huji.ac.il>
Sponsored by:	Dansk Scanning A/S, Data Robotics Inc.
2010-08-09 12:36:36 +00:00

381 lines
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/*-
* Copyright (c) 2005-2009 Daniel Braniss <danny@cs.huji.ac.il>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
*
*/
/*
| $Id: config.c,v 2.1 2006/11/12 08:06:51 danny Exp danny $
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <fcntl.h>
#include <time.h>
#include <ctype.h>
#include <camlib.h>
#include <dev/iscsi/initiator/iscsi.h>
#include "iscontrol.h"
/*
| ints
*/
#define OPT_port 1
#define OPT_tags 2
#define OPT_maxConnections 3
#define OPT_maxRecvDataSegmentLength 4
#define OPT_maxXmitDataSegmentLength 5
#define OPT_maxBurstLength 6
#define OPT_firstBurstLength 7
#define OPT_defaultTime2Wait 8
#define OPT_defaultTime2Retain 9
#define OPT_maxOutstandingR2T 10
#define OPT_errorRecoveryLevel 11
#define OPT_targetPortalGroupTag 12
#define OPT_headerDigest 13
#define OPT_dataDigest 14
/*
| Booleans
*/
#define OPT_initialR2T 16
#define OPT_immediateData 17
#define OPT_dataPDUInOrder 18
#define OPT_dataSequenceInOrder 19
/*
| strings
*/
#define OPT_sessionType 15
#define OPT_targetAddress 21
#define OPT_targetAlias 22
#define OPT_targetName 23
#define OPT_initiatorName 24
#define OPT_initiatorAlias 25
#define OPT_authMethod 26
#define OPT_chapSecret 27
#define OPT_chapIName 28
#define OPT_chapDigest 29
#define OPT_tgtChapName 30
#define OPT_tgtChapSecret 31
#define OPT_tgtChallengeLen 32
/*
| private
*/
#define OPT_maxluns 33
#define OPT_iqn 34
#define OPT_sockbufsize 35
/*
| sentinel
*/
#define OPT_end 0
#define _OFF(v) ((int)&((isc_opt_t *)NULL)->v)
#define _E(u, s, v) {.usage=u, .scope=s, .name=#v, .tokenID=OPT_##v}
textkey_t keyMap[] = {
_E(U_PR, S_PR, port),
_E(U_PR, S_PR, tags),
_E(U_PR, S_PR, maxluns),
_E(U_PR, S_PR, sockbufsize),
_E(U_PR, S_PR, iqn),
_E(U_PR, S_PR, chapSecret),
_E(U_PR, S_PR, chapIName),
_E(U_PR, S_PR, chapDigest),
_E(U_PR, S_PR, tgtChapName),
_E(U_PR, S_PR, tgtChapSecret),
_E(U_PR, S_PR, tgtChallengeLen),
_E(U_IO, S_CO, headerDigest),
_E(U_IO, S_CO, dataDigest),
_E(U_IO, S_CO, authMethod),
_E(U_LO, S_SW, maxConnections),
_E(U_IO, S_SW, targetName),
_E(U_IO, S_SW, initiatorName),
_E(U_ALL,S_SW, targetAlias),
_E(U_ALL,S_SW, initiatorAlias),
_E(U_ALL,S_SW, targetAddress),
_E(U_ALL,S_SW, targetPortalGroupTag),
_E(U_LO, S_SW, initialR2T),
_E(U_LO, S_SW, immediateData),
_E(U_ALL,S_CO, maxRecvDataSegmentLength),
_E(U_ALL,S_CO, maxXmitDataSegmentLength),
_E(U_LO, S_SW, maxBurstLength),
_E(U_LO, S_SW, firstBurstLength),
_E(U_LO, S_SW, defaultTime2Wait),
_E(U_LO, S_SW, defaultTime2Retain),
_E(U_LO, S_SW, maxOutstandingR2T),
_E(U_LO, S_SW, dataPDUInOrder),
_E(U_LO, S_SW, dataSequenceInOrder),
_E(U_LO, S_SW, errorRecoveryLevel),
_E(U_LO, S_SW, sessionType),
_E(0, 0, end)
};
#define _OPT_INT(w) strtol((char *)w, NULL, 0)
#define _OPT_STR(w) (char *)(w)
static __inline int
_OPT_BOOL(char *w)
{
if(isalpha((unsigned char)*w))
return strcasecmp(w, "TRUE") == 0;
else
return _OPT_INT(w);
}
#define _CASE(k, v) case OPT_##k: op->k = v; break
static void
setOption(isc_opt_t *op, int which, void *rval)
{
switch(which) {
_CASE(port, _OPT_INT(rval));
_CASE(tags, _OPT_INT(rval));
_CASE(maxluns, _OPT_INT(rval));
_CASE(iqn, _OPT_STR(rval));
_CASE(sockbufsize, _OPT_INT(rval));
_CASE(maxConnections, _OPT_INT(rval));
_CASE(maxRecvDataSegmentLength, _OPT_INT(rval));
_CASE(maxXmitDataSegmentLength, _OPT_INT(rval));
_CASE(maxBurstLength, _OPT_INT(rval));
_CASE(firstBurstLength, _OPT_INT(rval));
_CASE(defaultTime2Wait, _OPT_INT(rval));
_CASE(defaultTime2Retain, _OPT_INT(rval));
_CASE(maxOutstandingR2T, _OPT_INT(rval));
_CASE(errorRecoveryLevel, _OPT_INT(rval));
_CASE(targetPortalGroupTag, _OPT_INT(rval));
_CASE(headerDigest, _OPT_STR(rval));
_CASE(dataDigest, _OPT_STR(rval));
_CASE(targetAddress, _OPT_STR(rval));
_CASE(targetAlias, _OPT_STR(rval));
_CASE(targetName, _OPT_STR(rval));
_CASE(initiatorName, _OPT_STR(rval));
_CASE(initiatorAlias, _OPT_STR(rval));
_CASE(authMethod, _OPT_STR(rval));
_CASE(chapSecret, _OPT_STR(rval));
_CASE(chapIName, _OPT_STR(rval));
_CASE(chapDigest, _OPT_STR(rval));
_CASE(tgtChapName, _OPT_STR(rval));
_CASE(tgtChapSecret, _OPT_STR(rval));
_CASE(initialR2T, _OPT_BOOL(rval));
_CASE(immediateData, _OPT_BOOL(rval));
_CASE(dataPDUInOrder, _OPT_BOOL(rval));
_CASE(dataSequenceInOrder, _OPT_BOOL(rval));
}
}
static char *
getline(FILE *fd)
{
static char *sp, line[BUFSIZ];
char *lp, *p;
do {
if(sp == NULL)
sp = fgets(line, sizeof line, fd);
if((lp = sp) == NULL)
break;
if((p = strchr(lp, '\n')) != NULL)
*p = 0;
if((p = strchr(lp, '#')) != NULL)
*p = 0;
if((p = strchr(lp, ';')) != NULL) {
*p++ = 0;
sp = p;
} else
sp = NULL;
if(*lp)
return lp;
} while (feof(fd) == 0);
return NULL;
}
static int
getConfig(FILE *fd, char *key, char **Ar, int *nargs)
{
char *lp, *p, **ar;
int state, len, n;
ar = Ar;
if(key)
len = strlen(key);
else
len = 0;
state = 0;
while((lp = getline(fd)) != NULL) {
for(; isspace((unsigned char)*lp); lp++)
;
switch(state) {
case 0:
if((p = strchr(lp, '{')) != NULL) {
while((--p > lp) && *p && isspace((unsigned char)*p));
n = p - lp;
if(len && strncmp(lp, key, MAX(n, len)) == 0)
state = 2;
else
state = 1;
continue;
}
break;
case 1:
if(*lp == '}')
state = 0;
continue;
case 2:
if(*lp == '}')
goto done;
break;
}
for(p = &lp[strlen(lp)-1]; isspace((unsigned char)*p); p--)
*p = 0;
if((*nargs)-- > 0)
*ar++ = strdup(lp);
}
done:
if(*nargs > 0)
*ar = 0;
*nargs = ar - Ar;
return ar - Ar;
}
static textkey_t *
keyLookup(char *key)
{
textkey_t *tk;
for(tk = keyMap; tk->name; tk++) {
if(strcasecmp(key, tk->name) == 0)
return tk;
}
return NULL;
}
static void
puke(isc_opt_t *op)
{
printf("%24s = %d\n", "port", op->port);
printf("%24s = %d\n", "tags", op->tags);
printf("%24s = %d\n", "maxluns", op->maxluns);
printf("%24s = %s\n", "iqn", op->iqn);
printf("%24s = %d\n", "maxConnections", op->maxConnections);
printf("%24s = %d\n", "maxRecvDataSegmentLength", op->maxRecvDataSegmentLength);
printf("%24s = %d\n", "maxXmitDataSegmentLength", op->maxRecvDataSegmentLength);
printf("%24s = %d\n", "maxBurstLength", op->maxBurstLength);
printf("%24s = %d\n", "firstBurstLength", op->firstBurstLength);
printf("%24s = %d\n", "defaultTime2Wait", op->defaultTime2Wait);
printf("%24s = %d\n", "defaultTime2Retain", op->defaultTime2Retain);
printf("%24s = %d\n", "maxOutstandingR2T", op->maxOutstandingR2T);
printf("%24s = %d\n", "errorRecoveryLevel", op->errorRecoveryLevel);
printf("%24s = %d\n", "targetPortalGroupTag", op->targetPortalGroupTag);
printf("%24s = %s\n", "headerDigest", op->headerDigest);
printf("%24s = %s\n", "dataDigest", op->dataDigest);
printf("%24s = %d\n", "initialR2T", op->initialR2T);
printf("%24s = %d\n", "immediateData", op->immediateData);
printf("%24s = %d\n", "dataPDUInOrder", op->dataPDUInOrder);
printf("%24s = %d\n", "dataSequenceInOrder", op->dataSequenceInOrder);
printf("%24s = %s\n", "sessionType", op->sessionType);
printf("%24s = %s\n", "targetAddress", op->targetAddress);
printf("%24s = %s\n", "targetAlias", op->targetAlias);
printf("%24s = %s\n", "targetName", op->targetName);
printf("%24s = %s\n", "initiatorName", op->initiatorName);
printf("%24s = %s\n", "initiatorAlias", op->initiatorAlias);
printf("%24s = %s\n", "authMethod", op->authMethod);
printf("%24s = %s\n", "chapSecret", op->chapSecret);
printf("%24s = %s\n", "chapIName", op->chapIName);
printf("%24s = %s\n", "tgtChapName", op->tgtChapName);
printf("%24s = %s\n", "tgtChapSecret", op->tgtChapSecret);
printf("%24s = %d\n", "tgttgtChallengeLen", op->tgtChallengeLen);
}
void
parseArgs(int nargs, char **args, isc_opt_t *op)
{
char **ar;
char *p, *v;
textkey_t *tk;
for(ar = args; nargs > 0; nargs--, ar++) {
p = strchr(*ar, '=');
if(p == NULL)
continue;
*p = 0;
v = p + 1;
while(isspace((unsigned char)*--p))
*p = 0;
while(isspace((unsigned char)*v))
v++;
if((tk = keyLookup(*ar)) == NULL)
continue;
setOption(op, tk->tokenID, v);
}
}
void
parseConfig(FILE *fd, char *key, isc_opt_t *op)
{
char *Ar[256];
int cc;
cc = 256;
if(getConfig(fd, key, Ar, &cc))
parseArgs(cc, Ar, op);
if(vflag)
puke(op);
}
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