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 <sys/cdefs.h>
  32
  33 #include <stdlib.h>
  34 #include <unistd.h>
  35 #include <stdio.h>
  36 #include <string.h>
  37 #include <errno.h>
  38 #include <fcntl.h>
  39 #include <time.h>
  40 #include <ctype.h>
  41 #include <camlib.h>
  42
  43 #include "iscsi.h"
  44 #include "iscontrol.h"
  45
  46 /*
  47  | ints
  48  */
  49 #define OPT_port                        1
  50 #define OPT_tags                        2
  51
  52 #define OPT_maxConnections              3
  53 #define OPT_maxRecvDataSegmentLength    4
  54 #define OPT_maxXmitDataSegmentLength    5
  55 #define OPT_maxBurstLength              6
  56 #define OPT_firstBurstLength            7
  57 #define OPT_defaultTime2Wait            8
  58 #define OPT_defaultTime2Retain          9
  59 #define OPT_maxOutstandingR2T           10
  60 #define OPT_errorRecoveryLevel          11
  61 #define OPT_targetPortalGroupTag        12
  62 #define OPT_headerDigest                13
  63 #define OPT_dataDigest                  14
  64 /*
  65  | Booleans
  66  */
  67 #define OPT_initialR2T                  16
  68 #define OPT_immediateData               17
  69 #define OPT_dataPDUInOrder              18
  70 #define OPT_dataSequenceInOrder         19
  71 /*
  72  | strings
  73  */
  74 #define OPT_sessionType                 15
  75
  76 #define OPT_targetAddress               21
  77 #define OPT_targetAlias                 22
  78 #define OPT_targetName                  23
  79 #define OPT_initiatorName               24
  80 #define OPT_initiatorAlias              25
  81 #define OPT_authMethod                  26
  82
  83 #define OPT_chapSecret                  27
  84 #define OPT_chapIName                   28
  85 #define OPT_chapDigest                  29
  86 #define OPT_tgtChapName                 30
  87 #define OPT_tgtChapSecret               31
  88 #define OPT_tgtChallengeLen             32
  89 /*
  90  | private
  91  */
  92 #define OPT_maxluns                     33
  93 #define OPT_iqn                         34
  94 #define OPT_sockbufsize                 35
  95
  96 #define _OFF(v) ((int)&((isc_opt_t *)NULL)->v)
  97 #define _E(u, s, v) {.usage=u, .scope=s, .name=#v, .tokenID=OPT_##v}
  98
  99 textkey_t keyMap[] = {
 100      _E(U_PR, S_PR, port),
 101      _E(U_PR, S_PR, tags),
 102      _E(U_PR, S_PR, maxluns),
 103      _E(U_PR, S_PR, sockbufsize),
 104
 105      _E(U_PR, S_PR, iqn),
 106      _E(U_PR, S_PR, chapSecret),
 107      _E(U_PR, S_PR, chapIName),
 108      _E(U_PR, S_PR, chapDigest),
 109      _E(U_PR, S_PR, tgtChapName),
 110      _E(U_PR, S_PR, tgtChapSecret),
 111      _E(U_PR, S_PR, tgtChallengeLen),
 112
 113      _E(U_IO, S_CO, headerDigest),
 114      _E(U_IO, S_CO, dataDigest),
 115
 116      _E(U_IO, S_CO, authMethod),
 117
 118      _E(U_LO, S_SW, maxConnections),
 119      _E(U_IO, S_SW, targetName),
 120
 121      _E(U_IO, S_SW, initiatorName),
 122      _E(U_ALL,S_SW, targetAlias),
 123      _E(U_ALL,S_SW, initiatorAlias),
 124      _E(U_ALL,S_SW, targetAddress),
 125
 126      _E(U_ALL,S_SW, targetPortalGroupTag),
 127
 128      _E(U_LO, S_SW, initialR2T),
 129      _E(U_LO, S_SW, immediateData),
 130
 131      _E(U_ALL,S_CO, maxRecvDataSegmentLength),
 132      _E(U_ALL,S_CO, maxXmitDataSegmentLength),
 133
 134      _E(U_LO, S_SW, maxBurstLength),
 135      _E(U_LO, S_SW, firstBurstLength),
 136      _E(U_LO, S_SW, defaultTime2Wait),
 137      _E(U_LO, S_SW, defaultTime2Retain),
 138
 139      _E(U_LO, S_SW, maxOutstandingR2T),
 140      _E(U_LO, S_SW, dataPDUInOrder),
 141      _E(U_LO, S_SW, dataSequenceInOrder),
 142
 143      _E(U_LO, S_SW, errorRecoveryLevel),
 144
 145      _E(U_LO, S_SW, sessionType),
 146
 147      {0, 0, 0, 0}
 148 };
 149
 150 #define _OPT_INT(w)     strtol((char *)w, NULL, 0)
 151 #define _OPT_STR(w)     (char *)(w)
 152
 153 static __inline  int
 154 _OPT_BOOL(char *w)
 155 {
 156      if(isalpha(*w))
 157           return strcasecmp(w, "TRUE") == 0;
 158      else
 159           return _OPT_INT(w);
 160 }
 161
 162 #define _CASE(k, v)     case OPT_##k: op->k = v; break
 163 static void
 164 setOption(isc_opt_t *op, int which, void *rval)
 165 {
 166      switch(which) {
 167           _CASE(port, _OPT_INT(rval));
 168           _CASE(tags, _OPT_INT(rval));
 169           _CASE(maxluns, _OPT_INT(rval));
 170           _CASE(iqn, _OPT_STR(rval));
 171           _CASE(sockbufsize, _OPT_INT(rval));
 172
 173           _CASE(maxConnections, _OPT_INT(rval));
 174           _CASE(maxRecvDataSegmentLength, _OPT_INT(rval));
 175           _CASE(maxXmitDataSegmentLength, _OPT_INT(rval));
 176           _CASE(maxBurstLength, _OPT_INT(rval));
 177           _CASE(firstBurstLength, _OPT_INT(rval));
 178           _CASE(defaultTime2Wait, _OPT_INT(rval));
 179           _CASE(defaultTime2Retain, _OPT_INT(rval));
 180           _CASE(maxOutstandingR2T, _OPT_INT(rval));
 181           _CASE(errorRecoveryLevel, _OPT_INT(rval));
 182           _CASE(targetPortalGroupTag, _OPT_INT(rval));
 183           _CASE(headerDigest, _OPT_STR(rval));
 184           _CASE(dataDigest, _OPT_STR(rval));
 185
 186           _CASE(targetAddress, _OPT_STR(rval));
 187           _CASE(targetAlias, _OPT_STR(rval));
 188           _CASE(targetName, _OPT_STR(rval));
 189           _CASE(initiatorName, _OPT_STR(rval));
 190           _CASE(initiatorAlias, _OPT_STR(rval));
 191           _CASE(authMethod, _OPT_STR(rval));
 192           _CASE(chapSecret, _OPT_STR(rval));
 193           _CASE(chapIName, _OPT_STR(rval));
 194           _CASE(chapDigest, _OPT_STR(rval));
 195
 196           _CASE(tgtChapName, _OPT_STR(rval));
 197           _CASE(tgtChapSecret, _OPT_STR(rval));
 198
 199           _CASE(initialR2T, _OPT_BOOL(rval));
 200           _CASE(immediateData, _OPT_BOOL(rval));
 201           _CASE(dataPDUInOrder, _OPT_BOOL(rval));
 202           _CASE(dataSequenceInOrder, _OPT_BOOL(rval));
 203      }
 204 }
 205
 206 static char *
 207 getline(FILE *fd)
 208 {
 209      static char        *sp, line[BUFSIZ];
 210      char               *lp, *p;
 211
 212      do {
 213           if(sp == NULL)
 214                sp = fgets(line, sizeof line, fd);
 215
 216           if((lp = sp) == NULL)
 217                break;
 218           if((p = strchr(lp, '\n')) != NULL)
 219                *p = 0;
 220           if((p = strchr(lp, '#')) != NULL)
 221                *p = 0;
 222           if((p = strchr(lp, ';')) != NULL) {
 223                *p++ = 0;
 224                sp = p;
 225           } else
 226                sp = NULL;
 227           if(*lp)
 228                return lp;
 229      } while (feof(fd) == 0);
 230      return NULL;
 231 }
 232
 233 static int
 234 getConfig(FILE *fd, char *key, char **Ar, int *nargs)
 235 {
 236      char       *lp, *p, **ar;
 237      int        state, len, n;
 238
 239      ar = Ar;
 240      if(key)
 241           len = strlen(key);
 242      else
 243           len = 0;
 244      state = 0;
 245      while((lp = getline(fd)) != NULL) {
 246           for(; isspace(*lp); lp++)
 247                ;
 248           switch(state) {
 249           case 0:
 250                if((p = strchr(lp, '{')) != NULL) {
 251                     n = 0;
 252                     while((--p > lp) && *p && isspace(*p));
 253                     n = p - lp;
 254                     if(len && strncmp(lp, key, MAX(n, len)) == 0)
 255                          state = 2;
 256                     else
 257                          state = 1;
 258                     continue;
 259                }
 260                break;
 261
 262           case 1:
 263                if(*lp == '}')
 264                     state = 0;
 265                continue;
 266
 267           case 2:
 268                if(*lp == '}')
 269                     goto done;
 270
 271                break;
 272           }
 273
 274
 275           for(p = &lp[strlen(lp)-1]; isspace(*p); p--)
 276                *p = 0;
 277           if((*nargs)-- > 0)
 278                *ar++ = strdup(lp);
 279      }
 280
 281  done:
 282      if(*nargs > 0)
 283           *ar = 0;
 284      *nargs =  ar - Ar;
 285      return ar - Ar;
 286 }
 287
 288 static textkey_t *
 289 keyLookup(char *key)
 290 {
 291      textkey_t  *tk;
 292
 293      for(tk = keyMap; tk->name; tk++) {
 294           if(strcasecmp(key, tk->name) == 0)
 295                return tk;
 296      }
 297      return NULL;
 298 }
 299
 300 static void
 301 puke(isc_opt_t *op)
 302 {
 303      printf("%24s = %d\n", "port", op->port);
 304      printf("%24s = %d\n", "tags", op->tags);
 305      printf("%24s = %d\n", "maxluns", op->maxluns);
 306      printf("%24s = %s\n", "iqn", op->iqn);
 307
 308      printf("%24s = %d\n", "maxConnections", op->maxConnections);
 309      printf("%24s = %d\n", "maxRecvDataSegmentLength", op->maxRecvDataSegmentLength);
 310      printf("%24s = %d\n", "maxXmitDataSegmentLength", op->maxRecvDataSegmentLength);
 311      printf("%24s = %d\n", "maxBurstLength", op->maxBurstLength);
 312      printf("%24s = %d\n", "firstBurstLength", op->firstBurstLength);
 313      printf("%24s = %d\n", "defaultTime2Wait", op->defaultTime2Wait);
 314      printf("%24s = %d\n", "defaultTime2Retain", op->defaultTime2Retain);
 315      printf("%24s = %d\n", "maxOutstandingR2T", op->maxOutstandingR2T);
 316      printf("%24s = %d\n", "errorRecoveryLevel", op->errorRecoveryLevel);
 317      printf("%24s = %d\n", "targetPortalGroupTag", op->targetPortalGroupTag);
 318
 319      printf("%24s = %s\n", "headerDigest", op->headerDigest);
 320      printf("%24s = %s\n", "dataDigest", op->dataDigest);
 321
 322      printf("%24s = %d\n", "initialR2T", op->initialR2T);
 323      printf("%24s = %d\n", "immediateData", op->immediateData);
 324      printf("%24s = %d\n", "dataPDUInOrder", op->dataPDUInOrder);
 325      printf("%24s = %d\n", "dataSequenceInOrder", op->dataSequenceInOrder);
 326
 327      printf("%24s = %s\n", "sessionType", op->sessionType);
 328      printf("%24s = %s\n", "targetAddress", op->targetAddress);
 329      printf("%24s = %s\n", "targetAlias", op->targetAlias);
 330      printf("%24s = %s\n", "targetName", op->targetName);
 331      printf("%24s = %s\n", "initiatorName", op->initiatorName);
 332      printf("%24s = %s\n", "initiatorAlias", op->initiatorAlias);
 333      printf("%24s = %s\n", "authMethod", op->authMethod);
 334      printf("%24s = %s\n", "chapSecret", op->chapSecret);
 335      printf("%24s = %s\n", "chapIName", op->chapIName);
 336      printf("%24s = %s\n", "tgtChapName", op->tgtChapName);
 337      printf("%24s = %s\n", "tgtChapSecret", op->tgtChapSecret);
 338      printf("%24s = %d\n", "tgttgtChallengeLen", op->tgtChallengeLen);
 339 }
 340
 341 void
 342 parseArgs(int nargs, char **args, isc_opt_t *op)
 343 {
 344      char       **ar;
 345      char       *p, *v;
 346      textkey_t  *tk;
 347
 348      for(ar = args; nargs > 0; nargs--, ar++) {
 349           p = strchr(*ar, '=');
 350           if(p == NULL)
 351                continue;
 352           *p = 0;
 353           v = p + 1;
 354           while(isspace(*--p))
 355                *p = 0;
 356           while(isspace(*v))
 357                v++;
 358           if((tk = keyLookup(*ar)) == NULL)
 359                continue;
 360           setOption(op, tk->tokenID, v);
 361      }
 362 }
 363
 364 void
 365 parseConfig(FILE *fd, char *key, isc_opt_t *op)
 366 {
 367      char       *Ar[256];
 368      int        cc;
 369
 370      cc = 256;
 371      if(getConfig(fd, key, Ar, &cc))
 372           parseArgs(cc, Ar, op);
 373      if(vflag)
 374           puke(op);
 375 }