sbin/iscontrol/config.c

   1 /*-
   2  * Copyright (c) 2005-2008 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 <stdlib.h>
  32 #include <unistd.h>
  33 #include <stdio.h>
  34 #include <string.h>
  35 #include <errno.h>
  36 #include <fcntl.h>
  37 #include <time.h>
  38 #include <ctype.h>
  39 #include <camlib.h>
  40
  41 #include "iscsi.h"
  42 #include "iscontrol.h"
  43
  44 /*
  45  | ints
  46  */
  47 #define OPT_port                        1
  48 #define OPT_tags                        2
  49
  50 #define OPT_maxConnections              3
  51 #define OPT_maxRecvDataSegmentLength    4
  52 #define OPT_maxXmitDataSegmentLength    5
  53 #define OPT_maxBurstLength              6
  54 #define OPT_firstBurstLength            7
  55 #define OPT_defaultTime2Wait            8
  56 #define OPT_defaultTime2Retain          9
  57 #define OPT_maxOutstandingR2T           10
  58 #define OPT_errorRecoveryLevel          11
  59 #define OPT_targetPortalGroupTag        12
  60 #define OPT_headerDigest                13
  61 #define OPT_dataDigest                  14
  62 /*
  63  | Booleans
  64  */
  65 #define OPT_initialR2T                  16
  66 #define OPT_immediateData               17
  67 #define OPT_dataPDUInOrder              18
  68 #define OPT_dataSequenceInOrder         19
  69 /*
  70  | strings
  71  */
  72 #define OPT_sessionType                 15
  73
  74 #define OPT_targetAddress               21
  75 #define OPT_targetAlias                 22
  76 #define OPT_targetName                  23
  77 #define OPT_initiatorName               24
  78 #define OPT_initiatorAlias              25
  79 #define OPT_authMethod                  26
  80
  81 #define OPT_chapSecret                  27
  82 #define OPT_chapIName                   28
  83 #define OPT_chapDigest                  29
  84 #define OPT_tgtChapName                 30
  85 #define OPT_tgtChapSecret               31
  86 #define OPT_tgtChallengeLen             32
  87 /*
  88  | private
  89  */
  90 #define OPT_maxluns                     33
  91 #define OPT_iqn                         34
  92 #define OPT_sockbufsize                 35
  93
  94 #define _OFF(v) (offsetof(isc_opt_t *), (v))
  95 #define _E(u, s, v) {.usage=u, .scope=s, .name=#v, .tokenID=OPT_##v}
  96
  97 static textkey_t keyMap[] = {
  98      _E(U_PR, S_PR, port),
  99      _E(U_PR, S_PR, tags),
 100      _E(U_PR, S_PR, maxluns),
 101      _E(U_PR, S_PR, sockbufsize),
 102
 103      _E(U_PR, S_PR, iqn),
 104      _E(U_PR, S_PR, chapSecret),
 105      _E(U_PR, S_PR, chapIName),
 106      _E(U_PR, S_PR, chapDigest),
 107      _E(U_PR, S_PR, tgtChapName),
 108      _E(U_PR, S_PR, tgtChapSecret),
 109      _E(U_PR, S_PR, tgtChallengeLen),
 110
 111      _E(U_IO, S_CO, headerDigest),
 112      _E(U_IO, S_CO, dataDigest),
 113
 114      _E(U_IO, S_CO, authMethod),
 115
 116      _E(U_LO, S_SW, maxConnections),
 117      _E(U_IO, S_SW, targetName),
 118
 119      _E(U_IO, S_SW, initiatorName),
 120      _E(U_ALL,S_SW, targetAlias),
 121      _E(U_ALL,S_SW, initiatorAlias),
 122      _E(U_ALL,S_SW, targetAddress),
 123
 124      _E(U_ALL,S_SW, targetPortalGroupTag),
 125
 126      _E(U_LO, S_SW, initialR2T),
 127      _E(U_LO, S_SW, immediateData),
 128
 129      _E(U_ALL,S_CO, maxRecvDataSegmentLength),
 130      _E(U_ALL,S_CO, maxXmitDataSegmentLength),
 131
 132      _E(U_LO, S_SW, maxBurstLength),
 133      _E(U_LO, S_SW, firstBurstLength),
 134      _E(U_LO, S_SW, defaultTime2Wait),
 135      _E(U_LO, S_SW, defaultTime2Retain),
 136
 137      _E(U_LO, S_SW, maxOutstandingR2T),
 138      _E(U_LO, S_SW, dataPDUInOrder),
 139      _E(U_LO, S_SW, dataSequenceInOrder),
 140
 141      _E(U_LO, S_SW, errorRecoveryLevel),
 142
 143      _E(U_LO, S_SW, sessionType),
 144
 145      {0, 0, 0, 0}
 146 };
 147
 148 #define _OPT_INT(w)     strtol((char *)w, NULL, 0)
 149 #define _OPT_STR(w)     (char *)(w)
 150
 151 static __inline  int
 152 _OPT_BOOL(char *w)
 153 {
 154      if(isalpha(*w))
 155           return strcasecmp(w, "TRUE") == 0;
 156      else
 157           return _OPT_INT(w);
 158 }
 159
 160 #define _CASE(k, v)     case OPT_##k: op->k = v; break
 161 static void
 162 setOption(isc_opt_t *op, int which, void *rval)
 163 {
 164      switch(which) {
 165           _CASE(port, _OPT_INT(rval));
 166           _CASE(tags, _OPT_INT(rval));
 167           _CASE(maxluns, _OPT_INT(rval));
 168           _CASE(iqn, _OPT_STR(rval));
 169           _CASE(sockbufsize, _OPT_INT(rval));
 170
 171           _CASE(maxConnections, _OPT_INT(rval));
 172           _CASE(maxRecvDataSegmentLength, _OPT_INT(rval));
 173           _CASE(maxXmitDataSegmentLength, _OPT_INT(rval));
 174           _CASE(maxBurstLength, _OPT_INT(rval));
 175           _CASE(firstBurstLength, _OPT_INT(rval));
 176           _CASE(defaultTime2Wait, _OPT_INT(rval));
 177           _CASE(defaultTime2Retain, _OPT_INT(rval));
 178           _CASE(maxOutstandingR2T, _OPT_INT(rval));
 179           _CASE(errorRecoveryLevel, _OPT_INT(rval));
 180           _CASE(targetPortalGroupTag, _OPT_INT(rval));
 181           _CASE(headerDigest, _OPT_STR(rval));
 182           _CASE(dataDigest, _OPT_STR(rval));
 183
 184           _CASE(targetAddress, _OPT_STR(rval));
 185           _CASE(targetAlias, _OPT_STR(rval));
 186           _CASE(targetName, _OPT_STR(rval));
 187           _CASE(initiatorName, _OPT_STR(rval));
 188           _CASE(initiatorAlias, _OPT_STR(rval));
 189           _CASE(authMethod, _OPT_STR(rval));
 190           _CASE(chapSecret, _OPT_STR(rval));
 191           _CASE(chapIName, _OPT_STR(rval));
 192           _CASE(chapDigest, _OPT_STR(rval));
 193
 194           _CASE(tgtChapName, _OPT_STR(rval));
 195           _CASE(tgtChapSecret, _OPT_STR(rval));
 196
 197           _CASE(initialR2T, _OPT_BOOL(rval));
 198           _CASE(immediateData, _OPT_BOOL(rval));
 199           _CASE(dataPDUInOrder, _OPT_BOOL(rval));
 200           _CASE(dataSequenceInOrder, _OPT_BOOL(rval));
 201      }
 202 }
 203
 204 static char *
 205 get_line(FILE *fd)
 206 {
 207      static char        *sp, line[BUFSIZ];
 208      char               *lp, *p;
 209
 210      do {
 211           if(sp == NULL)
 212                sp = fgets(line, sizeof line, fd);
 213
 214           if((lp = sp) == NULL)
 215                break;
 216           if((p = strchr(lp, '\n')) != NULL)
 217                *p = 0;
 218           if((p = strchr(lp, '#')) != NULL)
 219                *p = 0;
 220           if((p = strchr(lp, ';')) != NULL) {
 221                *p++ = 0;
 222                sp = p;
 223           } else
 224                sp = NULL;
 225           if(*lp)
 226                return lp;
 227      } while (feof(fd) == 0);
 228      return NULL;
 229 }
 230
 231 static int
 232 getConfig(FILE *fd, char *key, char **Ar, int *nargs)
 233 {
 234      char       *lp, *p, **ar;
 235      int        state, len, n;
 236
 237      ar = Ar;
 238      if(key)
 239           len = strlen(key);
 240      else
 241           len = 0;
 242      state = 0;
 243      while((lp = get_line(fd)) != NULL) {
 244           for(; isspace(*lp); lp++)
 245                ;
 246           switch(state) {
 247           case 0:
 248                if((p = strchr(lp, '{')) != NULL) {
 249                     n = 0;
 250                     while((--p > lp) && *p && isspace(*p));
 251                     n = p - lp;
 252                     if(len && strncmp(lp, key, MAX(n, len)) == 0)
 253                          state = 2;
 254                     else
 255                          state = 1;
 256                     continue;
 257                }
 258                break;
 259
 260           case 1:
 261                if(*lp == '}')
 262                     state = 0;
 263                continue;
 264
 265           case 2:
 266                if(*lp == '}')
 267                     goto done;
 268
 269                break;
 270           }
 271
 272
 273           for(p = &lp[strlen(lp)-1]; isspace(*p); p--)
 274                *p = 0;
 275           if((*nargs)-- > 0)
 276                *ar++ = strdup(lp);
 277      }
 278
 279  done:
 280      if(*nargs > 0)
 281           *ar = NULL;
 282      *nargs =  ar - Ar;
 283      return ar - Ar;
 284 }
 285
 286 static textkey_t *
 287 keyLookup(char *key)
 288 {
 289      textkey_t  *tk;
 290
 291      for(tk = keyMap; tk->name; tk++) {
 292           if(strcasecmp(key, tk->name) == 0)
 293                return tk;
 294      }
 295      return NULL;
 296 }
 297
 298 static void
 299 puke(isc_opt_t *op)
 300 {
 301      printf("%24s = %d\n", "port", op->port);
 302      printf("%24s = %d\n", "tags", op->tags);
 303      printf("%24s = %d\n", "maxluns", op->maxluns);
 304      printf("%24s = %s\n", "iqn", op->iqn);
 305
 306      printf("%24s = %d\n", "maxConnections", op->maxConnections);
 307      printf("%24s = %d\n", "maxRecvDataSegmentLength", op->maxRecvDataSegmentLength);
 308      printf("%24s = %d\n", "maxXmitDataSegmentLength", op->maxRecvDataSegmentLength);
 309      printf("%24s = %d\n", "maxBurstLength", op->maxBurstLength);
 310      printf("%24s = %d\n", "firstBurstLength", op->firstBurstLength);
 311      printf("%24s = %d\n", "defaultTime2Wait", op->defaultTime2Wait);
 312      printf("%24s = %d\n", "defaultTime2Retain", op->defaultTime2Retain);
 313      printf("%24s = %d\n", "maxOutstandingR2T", op->maxOutstandingR2T);
 314      printf("%24s = %d\n", "errorRecoveryLevel", op->errorRecoveryLevel);
 315      printf("%24s = %d\n", "targetPortalGroupTag", op->targetPortalGroupTag);
 316
 317      printf("%24s = %s\n", "headerDigest", op->headerDigest);
 318      printf("%24s = %s\n", "dataDigest", op->dataDigest);
 319
 320      printf("%24s = %d\n", "initialR2T", op->initialR2T);
 321      printf("%24s = %d\n", "immediateData", op->immediateData);
 322      printf("%24s = %d\n", "dataPDUInOrder", op->dataPDUInOrder);
 323      printf("%24s = %d\n", "dataSequenceInOrder", op->dataSequenceInOrder);
 324
 325      printf("%24s = %s\n", "sessionType", op->sessionType);
 326      printf("%24s = %s\n", "targetAddress", op->targetAddress);
 327      printf("%24s = %s\n", "targetAlias", op->targetAlias);
 328      printf("%24s = %s\n", "targetName", op->targetName);
 329      printf("%24s = %s\n", "initiatorName", op->initiatorName);
 330      printf("%24s = %s\n", "initiatorAlias", op->initiatorAlias);
 331      printf("%24s = %s\n", "authMethod", op->authMethod);
 332      printf("%24s = %s\n", "chapSecret", op->chapSecret);
 333      printf("%24s = %s\n", "chapIName", op->chapIName);
 334      printf("%24s = %s\n", "tgtChapName", op->tgtChapName);
 335      printf("%24s = %s\n", "tgtChapSecret", op->tgtChapSecret);
 336      printf("%24s = %d\n", "tgttgtChallengeLen", op->tgtChallengeLen);
 337 }
 338
 339 void
 340 parseArgs(int nargs, char **args, isc_opt_t *op)
 341 {
 342      char       **ar;
 343      char       *p, *v;
 344      textkey_t  *tk;
 345
 346      for(ar = args; nargs > 0; nargs--, ar++) {
 347           p = strchr(*ar, '=');
 348           if(p == NULL)
 349                continue;
 350           *p = 0;
 351           v = p + 1;
 352           while(isspace(*--p))
 353                *p = 0;
 354           while(isspace(*v))
 355                v++;
 356           if((tk = keyLookup(*ar)) == NULL)
 357                continue;
 358           setOption(op, tk->tokenID, v);
 359      }
 360 }
 361
 362 void
 363 parseConfig(FILE *fd, char *key, isc_opt_t *op)
 364 {
 365      char       *Ar[256];
 366      int        cc;
 367
 368      cc = 256;
 369      if(getConfig(fd, key, Ar, &cc))
 370           parseArgs(cc, Ar, op);
 371      if(vflag)
 372           puke(op);
 373 }