1 /*-
2 * Copyright (c) 2005-2009 Daniel Braniss <danny@cs.huji.ac.il>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 */
27/*
28 | $Id: config.c,v 2.1 2006/11/12 08:06:51 danny Exp danny $
29 */
30
31#include <sys/cdefs.h>
32__FBSDID("$FreeBSD$");
33
34#include <stdlib.h>
35#include <unistd.h>
36#include <stdio.h>
37#include <string.h>
38#include <errno.h>
39#include <fcntl.h>
40#include <time.h>
41#include <ctype.h>
42#include <camlib.h>
43
44#include <dev/iscsi_initiator/iscsi.h>
45#include "iscontrol.h"
46
47/*
48 | ints
49 */
50#define OPT_port			1
51#define OPT_tags			2
52
53#define OPT_maxConnections		3
54#define OPT_maxRecvDataSegmentLength	4
55#define OPT_maxXmitDataSegmentLength	5
56#define OPT_maxBurstLength		6
57#define OPT_firstBurstLength		7
58#define OPT_defaultTime2Wait		8
59#define OPT_defaultTime2Retain		9
60#define OPT_maxOutstandingR2T		10
61#define OPT_errorRecoveryLevel		11
62#define OPT_targetPortalGroupTag	12
63#define OPT_headerDigest		13
64#define OPT_dataDigest			14
65/*
66 | Booleans
67 */
68#define OPT_initialR2T			16
69#define OPT_immediateData		17
70#define OPT_dataPDUInOrder		18
71#define OPT_dataSequenceInOrder		19
72/*
73 | strings
74 */
75#define OPT_sessionType			15
76
77#define OPT_targetAddress		21
78#define OPT_targetAlias			22
79#define OPT_targetName			23
80#define OPT_initiatorName		24
81#define OPT_initiatorAlias		25
82#define OPT_authMethod			26
83
84#define OPT_chapSecret			27
85#define OPT_chapIName			28
86#define OPT_chapDigest			29
87#define OPT_tgtChapName			30
88#define OPT_tgtChapSecret		31
89#define OPT_tgtChallengeLen		32
90/*
91 | private
92 */
93#define OPT_maxluns			33
94#define OPT_iqn				34
95#define OPT_sockbufsize			35
96
97/*
98 | sentinel
99 */
100#define OPT_end				0
101
102#define _OFF(v)	((int)&((isc_opt_t *)NULL)->v)
103#define _E(u, s, v) {.usage=u, .scope=s, .name=#v, .tokenID=OPT_##v}
104
105textkey_t keyMap[] = {
106     _E(U_PR, S_PR, port),
107     _E(U_PR, S_PR, tags),
108     _E(U_PR, S_PR, maxluns),
109     _E(U_PR, S_PR, sockbufsize),
110
111     _E(U_PR, S_PR, iqn),
112     _E(U_PR, S_PR, chapSecret),
113     _E(U_PR, S_PR, chapIName),
114     _E(U_PR, S_PR, chapDigest),
115     _E(U_PR, S_PR, tgtChapName),
116     _E(U_PR, S_PR, tgtChapSecret),
117     _E(U_PR, S_PR, tgtChallengeLen),
118
119     _E(U_IO, S_CO, headerDigest),
120     _E(U_IO, S_CO, dataDigest),
121
122     _E(U_IO, S_CO, authMethod),
123
124     _E(U_LO, S_SW, maxConnections),
125     _E(U_IO, S_SW, targetName),
126
127     _E(U_IO, S_SW, initiatorName),
128     _E(U_ALL,S_SW, targetAlias),
129     _E(U_ALL,S_SW, initiatorAlias),
130     _E(U_ALL,S_SW, targetAddress),
131
132     _E(U_ALL,S_SW, targetPortalGroupTag),
133
134     _E(U_LO, S_SW, initialR2T),
135     _E(U_LO, S_SW, immediateData),
136
137     _E(U_ALL,S_CO, maxRecvDataSegmentLength),
138     _E(U_ALL,S_CO, maxXmitDataSegmentLength),
139
140     _E(U_LO, S_SW, maxBurstLength),
141     _E(U_LO, S_SW, firstBurstLength),
142     _E(U_LO, S_SW, defaultTime2Wait),
143     _E(U_LO, S_SW, defaultTime2Retain),
144
145     _E(U_LO, S_SW, maxOutstandingR2T),
146     _E(U_LO, S_SW, dataPDUInOrder),
147     _E(U_LO, S_SW, dataSequenceInOrder),
148
149     _E(U_LO, S_SW, errorRecoveryLevel),
150
151     _E(U_LO, S_SW, sessionType),
152
153     _E(0, 0, end)
154};
155
156#define _OPT_INT(w)	strtol((char *)w, NULL, 0)
157#define _OPT_STR(w)	(char *)(w)
158
159static __inline  int
160_OPT_BOOL(char *w)
161{
162     if(isalpha((unsigned char)*w))
163	  return strcasecmp(w, "TRUE") == 0;
164     else
165	  return _OPT_INT(w);
166}
167
168#define _CASE(k, v)	case OPT_##k: op->k = v; break
169static void
170setOption(isc_opt_t *op, int which, void *rval)
171{
172     switch(which) {
173	  _CASE(port, _OPT_INT(rval));
174	  _CASE(tags, _OPT_INT(rval));
175	  _CASE(maxluns, _OPT_INT(rval));
176	  _CASE(iqn, _OPT_STR(rval));
177	  _CASE(sockbufsize, _OPT_INT(rval));
178
179	  _CASE(maxConnections, _OPT_INT(rval));
180	  _CASE(maxRecvDataSegmentLength, _OPT_INT(rval));
181	  _CASE(maxXmitDataSegmentLength, _OPT_INT(rval));
182	  _CASE(maxBurstLength, _OPT_INT(rval));
183	  _CASE(firstBurstLength, _OPT_INT(rval));
184	  _CASE(defaultTime2Wait, _OPT_INT(rval));
185	  _CASE(defaultTime2Retain, _OPT_INT(rval));
186	  _CASE(maxOutstandingR2T, _OPT_INT(rval));
187	  _CASE(errorRecoveryLevel, _OPT_INT(rval));
188	  _CASE(targetPortalGroupTag, _OPT_INT(rval));
189	  _CASE(headerDigest, _OPT_STR(rval));
190	  _CASE(dataDigest, _OPT_STR(rval));
191
192	  _CASE(targetAddress, _OPT_STR(rval));
193	  _CASE(targetAlias, _OPT_STR(rval));
194	  _CASE(targetName, _OPT_STR(rval));
195	  _CASE(initiatorName, _OPT_STR(rval));
196	  _CASE(initiatorAlias, _OPT_STR(rval));
197	  _CASE(authMethod, _OPT_STR(rval));
198	  _CASE(chapSecret, _OPT_STR(rval));
199	  _CASE(chapIName, _OPT_STR(rval));
200	  _CASE(chapDigest, _OPT_STR(rval));
201
202	  _CASE(tgtChapName, _OPT_STR(rval));
203	  _CASE(tgtChapSecret, _OPT_STR(rval));
204
205	  _CASE(initialR2T, _OPT_BOOL(rval));
206	  _CASE(immediateData, _OPT_BOOL(rval));
207	  _CASE(dataPDUInOrder, _OPT_BOOL(rval));
208	  _CASE(dataSequenceInOrder, _OPT_BOOL(rval));
209     }
210}
211
212static char *
213getline(FILE *fd)
214{
215     static char	*sp, line[BUFSIZ];
216     char		*lp, *p;
217
218     do {
219	  if(sp == NULL)
220	       sp = fgets(line, sizeof line, fd);
221
222	  if((lp = sp) == NULL)
223	       break;
224	  if((p = strchr(lp, '\n')) != NULL)
225	       *p = 0;
226	  if((p = strchr(lp, '#')) != NULL)
227	       *p = 0;
228	  if((p = strchr(lp, ';')) != NULL) {
229	       *p++ = 0;
230	       sp = p;
231	  } else
232	       sp = NULL;
233	  if(*lp)
234	       return lp;
235     } while (feof(fd) == 0);
236     return NULL;
237}
238
239static int
240getConfig(FILE *fd, char *key, char **Ar, int *nargs)
241{
242     char	*lp, *p, **ar;
243     int	state, len, n;
244
245     ar = Ar;
246     if(key)
247	  len = strlen(key);
248     else
249	  len = 0;
250     state = 0;
251     while((lp = getline(fd)) != NULL) {
252	  for(; isspace((unsigned char)*lp); lp++)
253	       ;
254	  switch(state) {
255	  case 0:
256	       if((p = strchr(lp, '{')) != NULL) {
257		    while((--p > lp) && *p && isspace((unsigned char)*p));
258		    n = p - lp;
259		    if(len && strncmp(lp, key, MAX(n, len)) == 0)
260			 state = 2;
261		    else
262			 state = 1;
263		    continue;
264	       }
265	       break;
266
267	  case 1:
268	       if(*lp == '}')
269		    state = 0;
270	       continue;
271
272	  case 2:
273	       if(*lp == '}')
274		    goto done;
275
276	       break;
277	  }
278
279
280	  for(p = &lp[strlen(lp)-1]; isspace((unsigned char)*p); p--)
281	       *p = 0;
282	  if((*nargs)-- > 0)
283	       *ar++ = strdup(lp);
284     }
285
286 done:
287     if(*nargs > 0)
288	  *ar = 0;
289     *nargs =  ar - Ar;
290     return ar - Ar;
291}
292
293static textkey_t *
294keyLookup(char *key)
295{
296     textkey_t	*tk;
297
298     for(tk = keyMap; tk->name && strcmp(tk->name, "end"); tk++) {
299	  if(strcasecmp(key, tk->name) == 0)
300	       return tk;
301     }
302     return NULL;
303}
304
305static void
306puke(isc_opt_t *op)
307{
308     printf("%24s = %d\n", "port", op->port);
309     printf("%24s = %d\n", "tags", op->tags);
310     printf("%24s = %d\n", "maxluns", op->maxluns);
311     printf("%24s = %s\n", "iqn", op->iqn);
312
313     printf("%24s = %d\n", "maxConnections", op->maxConnections);
314     printf("%24s = %d\n", "maxRecvDataSegmentLength", op->maxRecvDataSegmentLength);
315     printf("%24s = %d\n", "maxXmitDataSegmentLength", op->maxRecvDataSegmentLength);
316     printf("%24s = %d\n", "maxBurstLength", op->maxBurstLength);
317     printf("%24s = %d\n", "firstBurstLength", op->firstBurstLength);
318     printf("%24s = %d\n", "defaultTime2Wait", op->defaultTime2Wait);
319     printf("%24s = %d\n", "defaultTime2Retain", op->defaultTime2Retain);
320     printf("%24s = %d\n", "maxOutstandingR2T", op->maxOutstandingR2T);
321     printf("%24s = %d\n", "errorRecoveryLevel", op->errorRecoveryLevel);
322     printf("%24s = %d\n", "targetPortalGroupTag", op->targetPortalGroupTag);
323
324     printf("%24s = %s\n", "headerDigest", op->headerDigest);
325     printf("%24s = %s\n", "dataDigest", op->dataDigest);
326
327     printf("%24s = %d\n", "initialR2T", op->initialR2T);
328     printf("%24s = %d\n", "immediateData", op->immediateData);
329     printf("%24s = %d\n", "dataPDUInOrder", op->dataPDUInOrder);
330     printf("%24s = %d\n", "dataSequenceInOrder", op->dataSequenceInOrder);
331
332     printf("%24s = %s\n", "sessionType", op->sessionType);
333     printf("%24s = %s\n", "targetAddress", op->targetAddress);
334     printf("%24s = %s\n", "targetAlias", op->targetAlias);
335     printf("%24s = %s\n", "targetName", op->targetName);
336     printf("%24s = %s\n", "initiatorName", op->initiatorName);
337     printf("%24s = %s\n", "initiatorAlias", op->initiatorAlias);
338     printf("%24s = %s\n", "authMethod", op->authMethod);
339     printf("%24s = %s\n", "chapSecret", op->chapSecret);
340     printf("%24s = %s\n", "chapIName", op->chapIName);
341     printf("%24s = %s\n", "tgtChapName", op->tgtChapName);
342     printf("%24s = %s\n", "tgtChapSecret", op->tgtChapSecret);
343     printf("%24s = %d\n", "tgttgtChallengeLen", op->tgtChallengeLen);
344}
345
346void
347parseArgs(int nargs, char **args, isc_opt_t *op)
348{
349     char	**ar;
350     char	*p, *v;
351     textkey_t	*tk;
352
353     for(ar = args; nargs > 0; nargs--, ar++) {
354	  p = strchr(*ar, '=');
355	  if(p == NULL)
356	       continue;
357	  *p = 0;
358	  v = p + 1;
359	  while(isspace((unsigned char)*--p))
360	       *p = 0;
361	  while(isspace((unsigned char)*v))
362	       v++;
363	  if((tk = keyLookup(*ar)) == NULL)
364	       continue;
365	  setOption(op, tk->tokenID, v);
366     }
367}
368
369void
370parseConfig(FILE *fd, char *key, isc_opt_t *op)
371{
372     char	*Ar[256];
373     int	cc;
374
375     cc = 256;
376     if(getConfig(fd, key, Ar, &cc))
377	  parseArgs(cc, Ar, op);
378     if(vflag)
379	  puke(op);
380}
381