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freebsd/sbin/iscontrol/config.c
Scott Long c5933b2086 Introduce Danny Braniss' iSCSI initiator, version 2.0.99. Please read the 
included man pages on how to use it.  This code is still somewhat experimental
but has been successfully tested on a number of targets.  Many thanks to
Danny for contributing this.

Approved by: re
2007-07-24 15:35:02 +00:00

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/*-
* Copyright (c) 2005-2007 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 "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
#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),
{0}
};
#define _OPT_INT(w) strtol((char *)w, NULL, 0)
#define _OPT_STR(w) (char *)(w)
static __inline int
_OPT_BOOL(char *w)
{
if(isalpha(*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(*lp); lp++)
;
switch(state) {
case 0:
if((p = strchr(lp, '{')) != NULL) {
n = 0;
while((--p > lp) && *p && isspace(*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(*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(*--p))
*p = 0;
while(isspace(*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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