1/*-
2 * Copyright (c) 2005-2010 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__FBSDID("$FreeBSD$");
36
37#include <sys/param.h>
38#include <sys/types.h>
39#include <sys/socket.h>
40#include <sys/sysctl.h>
41
42#include <netinet/in.h>
43#include <netinet/tcp.h>
44#include <arpa/inet.h>
45#include <sys/ioctl.h>
46#include <netdb.h>
47#include <err.h>
48#include <errno.h>
49#include <fcntl.h>
50#include <libgen.h>
51#include <stdio.h>
52#include <stdlib.h>
53#include <string.h>
54#include <time.h>
55#include <unistd.h>
56#include <camlib.h>
57
58#include <dev/iscsi/initiator/iscsi.h>
59#include "iscontrol.h"
60
61static char version[] = "2.3.1"; // keep in sync with iscsi_initiator
62
63#define USAGE "[-v] [-d] [-c config] [-n name] [-t target] [-p pidfile]"
64#define OPTIONS	"vdc:t:n:p:"
65
66token_t AuthMethods[] = {
67     {"None",	NONE},
68     {"KRB5",	KRB5},
69     {"SPKM1",	SPKM1},
70     {"SPKM2",	SPKM2},
71     {"SRP",	SRP},
72     {"CHAP",	CHAP},
73     {0, 0}
74};
75
76token_t	DigestMethods[] = {
77     {"None",	0},
78     {"CRC32",	1},
79     {"CRC32C",	1},
80     {0, 0}
81};
82
83u_char	isid[6 + 6];
84/*
85 | Default values
86 */
87isc_opt_t opvals = {
88     .port			= 3260,
89     .sockbufsize		= 128,
90     .iqn			= "iqn.2005-01.il.ac.huji.cs:",
91
92     .sessionType		= "Normal",
93     .targetAddress		= 0,
94     .targetName		= 0,
95     .initiatorName		= 0,
96     .authMethod		= "None",
97     .headerDigest		= "None,CRC32C",
98     .dataDigest		= "None,CRC32C",
99     .maxConnections		= 1,
100     .maxRecvDataSegmentLength	= 64 * 1024,
101     .maxXmitDataSegmentLength	= 8 * 1024, // 64 * 1024,
102     .maxBurstLength		= 128 * 1024,
103     .firstBurstLength		= 64 * 1024, // must be less than maxBurstLength
104     .defaultTime2Wait		= 0,
105     .defaultTime2Retain	= 0,
106     .maxOutstandingR2T		= 1,
107     .errorRecoveryLevel	= 0,
108
109     .dataPDUInOrder		= TRUE,
110     .dataSequenceInOrder	= TRUE,
111
112     .initialR2T		= TRUE,
113     .immediateData		= TRUE,
114};
115
116static void
117usage(const char *pname)
118{
119	fprintf(stderr, "usage: %s " USAGE "\n", pname);
120	exit(1);
121}
122
123int
124lookup(token_t *tbl, char *m)
125{
126     token_t	*tp;
127
128     for(tp = tbl; tp->name != NULL; tp++)
129	  if(strcasecmp(tp->name, m) == 0)
130	       return tp->val;
131     return 0;
132}
133
134int
135main(int cc, char **vv)
136{
137     int	ch, disco;
138     char	*pname, *pidfile, *p, *q, *ta, *kw, *v;
139     isc_opt_t	*op;
140     FILE	*fd;
141     size_t	n;
142
143     op = &opvals;
144     iscsidev = "/dev/"ISCSIDEV;
145     fd = NULL;
146     pname = vv[0];
147     if ((pname = basename(pname)) == NULL)
148	  err(1, "basename");
149
150     kw = ta = 0;
151     disco = 0;
152     pidfile = NULL;
153     /*
154      | check for driver & controller version match
155      */
156     n = 0;
157#define VERSION_OID_S	"net.iscsi_initiator.driver_version"
158     if (sysctlbyname(VERSION_OID_S, 0, &n, 0, 0) != 0) {
159	  if (errno == ENOENT)
160		errx(1, "sysctlbyname(\"" VERSION_OID_S "\") "
161			"failed; is the iscsi driver loaded?");
162	  err(1, "sysctlbyname(\"" VERSION_OID_S "\")");
163     }
164     v = malloc(n+1);
165     if (v == NULL)
166	  err(1, "malloc");
167     if (sysctlbyname(VERSION_OID_S, v, &n, 0, 0) != 0)
168	  err(1, "sysctlbyname");
169
170     if (strncmp(version, v, 3) != 0)
171	  errx(1, "versions mismatch");
172
173     while((ch = getopt(cc, vv, OPTIONS)) != -1) {
174	  switch(ch) {
175	  case 'v':
176	       vflag++;
177	       break;
178	  case 'c':
179	       fd = fopen(optarg, "r");
180	       if (fd == NULL)
181		    err(1, "fopen(\"%s\")", optarg);
182	       break;
183	  case 'd':
184	       disco = 1;
185	       break;
186	  case 't':
187	       ta = optarg;
188	       break;
189	  case 'n':
190	       kw = optarg;
191	       break;
192	  case 'p':
193	       pidfile = optarg;
194	       break;
195	  default:
196	       usage(pname);
197	  }
198     }
199     if(fd == NULL)
200	  fd = fopen("/etc/iscsi.conf", "r");
201
202     if(fd != NULL) {
203	  parseConfig(fd, kw, op);
204	  fclose(fd);
205     }
206     cc -= optind;
207     vv += optind;
208     if(cc > 0) {
209	  if(vflag)
210	       printf("adding '%s'\n", *vv);
211	  parseArgs(cc, vv, op);
212     }
213     if(ta)
214	  op->targetAddress = ta;
215
216     if(op->targetAddress == NULL) {
217	  warnx("no target specified!");
218	  usage(pname);
219     }
220     q = op->targetAddress;
221     if(*q == '[' && (q = strchr(q, ']')) != NULL) {
222	  *q++ = '\0';
223	  op->targetAddress++;
224     } else
225	  q = op->targetAddress;
226     if((p = strchr(q, ':')) != NULL) {
227	  *p++ = 0;
228	  op->port = atoi(p);
229	  p = strchr(p, ',');
230     }
231     if(p || ((p = strchr(q, ',')) != NULL)) {
232	  *p++ = 0;
233	  op->targetPortalGroupTag = atoi(p);
234     }
235     if(op->initiatorName == 0) {
236	  char	hostname[MAXHOSTNAMELEN];
237
238	  if(op->iqn) {
239	       if(gethostname(hostname, sizeof(hostname)) == 0)
240		    asprintf(&op->initiatorName, "%s:%s", op->iqn, hostname);
241	       else
242		    asprintf(&op->initiatorName, "%s:%d", op->iqn, (int)time(0) & 0xff); // XXX:
243	  }
244	  else {
245	       if(gethostname(hostname, sizeof(hostname)) == 0)
246		    asprintf(&op->initiatorName, "%s", hostname);
247	       else
248		    asprintf(&op->initiatorName, "%d", (int)time(0) & 0xff); // XXX:
249	  }
250     }
251     if(disco) {
252	  op->sessionType = "Discovery";
253	  op->targetName = 0;
254     }
255     op->pidfile = pidfile;
256     fsm(op);
257
258     exit(0);
259}
260