sbin/iscontrol/iscontrol.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: iscontrol.c,v 2.2 2006/12/01 09:11:56 danny Exp danny $
  29  */
  30 /*
  31  | the user level initiator (client)
  32  */
  33
  34 #include <sys/cdefs.h>
  35
  36 #include <sys/param.h>
  37 #include <sys/types.h>
  38 #include <sys/socket.h>
  39 #include <sys/sysctl.h>
  40 #include <sys/module.h>
  41 #include <sys/linker.h>
  42
  43 #include <netinet/in.h>
  44 #include <netinet/tcp.h>
  45 #include <arpa/inet.h>
  46 #include <sys/ioctl.h>
  47 #include <netdb.h>
  48 #include <stdlib.h>
  49 #include <unistd.h>
  50 #include <stdio.h>
  51 #include <string.h>
  52 #include <errno.h>
  53 #include <fcntl.h>
  54 #include <time.h>
  55 #include <camlib.h>
  56
  57 #include "iscsi.h"
  58 #include "iscontrol.h"
  59
  60 #define USAGE "[-dv] [-c file] [-n nickname] [-t target] [variable=value ...]"
  61 #define OPTIONS "vdc:t:n:"
  62
  63 #ifndef DEBUG
  64 //int   vflag;
  65 #endif
  66
  67 token_t AuthMethods[] = {
  68      {"None",   NONE},
  69      {"KRB5",   KRB5},
  70      {"SPKM1",  SPKM1},
  71      {"SPKM2",  SPKM2},
  72      {"SRP",    SRP},
  73      {"CHAP",   CHAP},
  74      {0, 0}
  75 };
  76
  77 token_t DigestMethods[] = {
  78      {"None",   0},
  79      {"CRC32",  1},
  80      {"CRC32C", 1},
  81      {0, 0}
  82 };
  83
  84 u_char  isid[6 + 6];
  85 /*
  86  | Default values
  87  */
  88 isc_opt_t opvals = {
  89      .port                      = 3260,
  90      .sockbufsize               = 128,
  91      .iqn                       = "iqn.2005-01.il.ac.huji.cs:",
  92
  93      .sessionType               = "Normal",
  94      .targetAddress             = 0,
  95      .targetName                = 0,
  96      .initiatorName             = 0,
  97      .authMethod                = "None",
  98      .headerDigest              = "None,CRC32C",
  99      .dataDigest                = "None,CRC32C",
 100      .maxConnections            = 1,
 101      .maxRecvDataSegmentLength  = 64 * 1024,
 102      .maxXmitDataSegmentLength  = 8 * 1024, // 64 * 1024,
 103      .maxBurstLength            = 128 * 1024,
 104      .firstBurstLength          = 64 * 1024, // must be less than maxBurstLength
 105      .defaultTime2Wait          = 0,
 106      .defaultTime2Retain        = 0,
 107      .maxOutstandingR2T         = 1,
 108      .errorRecoveryLevel        = 0,
 109
 110      .dataPDUInOrder            = TRUE,
 111      .dataSequenceInOrder       = TRUE,
 112
 113      .initialR2T                = TRUE,
 114      .immediateData             = TRUE,
 115 };
 116
 117 int
 118 lookup(token_t *tbl, char *m)
 119 {
 120      token_t    *tp;
 121
 122      for(tp = tbl; tp->name != NULL; tp++)
 123           if(strcasecmp(tp->name, m) == 0)
 124                return tp->val;
 125      return 0;
 126 }
 127
 128 int
 129 main(int cc, char **vv)
 130 {
 131      int        ch, disco;
 132      char       *pname, *p, *q, *ta, *kw;
 133      isc_opt_t  *op;
 134      FILE       *fd;
 135
 136      /* Try to load iscsi_initiator module before starting its operation */
 137      if (modfind(INITIATORMOD) < 0) {
 138              if (kldload(INITIATORMOD) < 0 || modfind(INITIATORMOD) < 0) {
 139                      perror(INITIATORMOD ": Error while handling kernel module");
 140                      return 1;
 141              }
 142      }
 143
 144      op = &opvals;
 145      iscsidev = "/dev/"ISCSIDEV;
 146      fd = NULL;
 147      pname = vv[0];
 148      if((p = strrchr(pname, '/')) != NULL)
 149           pname = p + 1;
 150
 151      kw = ta = 0;
 152      disco = 0;
 153
 154      while((ch = getopt(cc, vv, OPTIONS)) != -1) {
 155           switch(ch) {
 156           case 'v':
 157                vflag++;
 158                break;
 159           case 'c':
 160                fd = fopen(optarg, "r");
 161                if(fd == NULL) {
 162                     perror(optarg);
 163                     exit(1);
 164                }
 165                break;
 166           case 'd':
 167                disco = 1;
 168                break;
 169           case 't':
 170                ta = optarg;
 171                break;
 172           case 'n':
 173                kw = optarg;
 174                break;
 175           default:
 176           badu:
 177                fprintf(stderr, "Usage: %s %s\n", pname, USAGE);
 178                exit(1);
 179           }
 180      }
 181      if(fd == NULL)
 182           fd = fopen("/etc/iscsi.conf", "r");
 183
 184      if(fd != NULL) {
 185           parseConfig(fd, kw, op);
 186           fclose(fd);
 187      }
 188      cc -= optind;
 189      vv += optind;
 190      if(cc > 0) {
 191           if(vflag)
 192                printf("adding '%s'\n", *vv);
 193           parseArgs(cc, vv, op);
 194      }
 195      if(ta)
 196           op->targetAddress = ta;
 197
 198      if(op->targetAddress == NULL) {
 199           fprintf(stderr, "No target!\n");
 200           goto badu;
 201      }
 202      q = op->targetAddress;
 203      if(*q == '[' && (q = strchr(q, ']')) != NULL) {
 204           *q++ = '\0';
 205           op->targetAddress++;
 206      } else
 207           q = op->targetAddress;
 208      if((p = strchr(q, ':')) != NULL) {
 209           *p++ = 0;
 210           op->port = atoi(p);
 211           p = strchr(p, ',');
 212      }
 213      if(p || ((p = strchr(q, ',')) != NULL)) {
 214           *p++ = 0;
 215           op->targetPortalGroupTag = atoi(p);
 216      }
 217      if(op->initiatorName == 0) {
 218           char  hostname[256];
 219
 220           if(op->iqn) {
 221                if(gethostname(hostname, sizeof(hostname)) == 0)
 222                     asprintf(&op->initiatorName, "%s:%s", op->iqn, hostname);
 223                else
 224                     asprintf(&op->initiatorName, "%s:%d", op->iqn, (int)time(0) & 0xff); // XXX:
 225           }
 226           else {
 227                if(gethostname(hostname, sizeof(hostname)) == 0)
 228                     asprintf(&op->initiatorName, "%s", hostname);
 229                else
 230                     asprintf(&op->initiatorName, "%d", (int)time(0) & 0xff); // XXX:
 231           }
 232      }
 233      if(disco) {
 234           op->sessionType = "Discovery";
 235           op->targetName = 0;
 236      }
 237
 238      fsm(op);
 239
 240      exit(0);
 241 }