1/*
2 * Copyright (c) 1997-2014 Erez Zadok
3 * Copyright (c) 1990 Jan-Simon Pendry
4 * Copyright (c) 1990 Imperial College of Science, Technology & Medicine
5 * Copyright (c) 1990 The Regents of the University of California.
6 * All rights reserved.
7 *
8 * This code is derived from software contributed to Berkeley by
9 * Jan-Simon Pendry at Imperial College, London.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 *    notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 *    notice, this list of conditions and the following disclaimer in the
18 *    documentation and/or other materials provided with the distribution.
19 * 3. Neither the name of the University nor the names of its contributors
20 *    may be used to endorse or promote products derived from this software
21 *    without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 *
35 *
36 * File: am-utils/amd/get_args.c
37 *
38 */
39
40/*
41 * Argument decode
42 */
43
44#ifdef HAVE_CONFIG_H
45# include <config.h>
46#endif /* HAVE_CONFIG_H */
47#include <am_defs.h>
48#include <amd.h>
49
50/* include auto-generated version file */
51#include <build_version.h>
52
53char *amu_conf_file = "/etc/amd.conf"; /* default amd configuration file */
54char *conf_tag = NULL;		/* default conf file tags to use */
55int usage = 0;
56int use_conf_file = 0;		/* default don't use amd.conf file */
57char *mnttab_file_name = NULL;	/* symbol must be available always */
58
59
60/*
61 * Return the version string (dynamic buffer)
62 */
63char *
64get_version_string(void)
65{
66  char *vers = NULL;
67  char tmpbuf[1024];
68  char *wire_buf;
69  int wire_buf_len = 0;
70  size_t len;		  /* max allocated length (to avoid buf overflow) */
71
72  /*
73   * First get dynamic string listing all known networks.
74   * This could be a long list, if host has lots of interfaces.
75   */
76  wire_buf = print_wires();
77  if (wire_buf)
78    wire_buf_len = strlen(wire_buf);
79
80  len = 2048 + wire_buf_len;
81  vers = xmalloc(len);
82  xsnprintf(vers, len, "%s\n%s\n%s\n%s\n",
83	    "Copyright (c) 1997-2014 Erez Zadok",
84	    "Copyright (c) 1990 Jan-Simon Pendry",
85	    "Copyright (c) 1990 Imperial College of Science, Technology & Medicine",
86	    "Copyright (c) 1990 The Regents of the University of California.");
87  xsnprintf(tmpbuf, sizeof(tmpbuf), "%s version %s (build %d).\n",
88	    PACKAGE_NAME, PACKAGE_VERSION, AMU_BUILD_VERSION);
89  xstrlcat(vers, tmpbuf, len);
90  xsnprintf(tmpbuf, sizeof(tmpbuf), "Report bugs to %s.\n", PACKAGE_BUGREPORT);
91  xstrlcat(vers, tmpbuf, len);
92#if 0
93  /*
94   * XXX  This block (between from the #if 0 to #endif was in the
95   * XXX  original was in the original merge however in the interest
96   * XXX  of reproduceable builds and the fact that this is redundant
97   * XXX  information, it is effectively removed.
98   */
99  xsnprintf(tmpbuf, sizeof(tmpbuf), "Configured by %s@%s on date %s.\n",
100	    USER_NAME, HOST_NAME, CONFIG_DATE);
101  xstrlcat(vers, tmpbuf, len);
102  xsnprintf(tmpbuf, sizeof(tmpbuf), "Built by %s@%s on date %s.\n",
103	    BUILD_USER, BUILD_HOST, BUILD_DATE);
104  xstrlcat(vers, tmpbuf, len);
105#endif
106  xsnprintf(tmpbuf, sizeof(tmpbuf), "cpu=%s (%s-endian), arch=%s, karch=%s.\n",
107	    cpu, endian, gopt.arch, gopt.karch);
108  xstrlcat(vers, tmpbuf, len);
109  xsnprintf(tmpbuf, sizeof(tmpbuf), "full_os=%s, os=%s, osver=%s, vendor=%s, distro=%s.\n",
110	    gopt.op_sys_full, gopt.op_sys, gopt.op_sys_ver, gopt.op_sys_vendor, DISTRO_NAME);
111  xstrlcat(vers, tmpbuf, len);
112  xsnprintf(tmpbuf, sizeof(tmpbuf), "domain=%s, host=%s, hostd=%s.\n",
113	    hostdomain, am_get_hostname(), hostd);
114  xstrlcat(vers, tmpbuf, len);
115
116  xstrlcat(vers, "Map support for: ", len);
117  mapc_showtypes(tmpbuf, sizeof(tmpbuf));
118  xstrlcat(vers, tmpbuf, len);
119  xstrlcat(vers, ".\nAMFS: ", len);
120  ops_showamfstypes(tmpbuf, sizeof(tmpbuf));
121  xstrlcat(vers, tmpbuf, len);
122  xstrlcat(vers, ", inherit.\nFS: ", len); /* hack: "show" that we support type:=inherit */
123  ops_showfstypes(tmpbuf, sizeof(tmpbuf));
124  xstrlcat(vers, tmpbuf, len);
125
126  /* append list of networks if available */
127  if (wire_buf) {
128    xstrlcat(vers, wire_buf, len);
129    XFREE(wire_buf);
130  }
131
132  return vers;
133}
134
135
136static void
137show_usage(void)
138{
139  fprintf(stderr,
140	  "Usage: %s [-nprvHS] [-a mount_point] [-c cache_time] [-d domain]\n\
141\t[-k kernel_arch] [-l logfile%s\n\
142\t[-t timeout.retrans] [-w wait_timeout] [-A arch] [-C cluster_name]\n\
143\t[-o op_sys_ver] [-O op_sys_name]\n\
144\t[-F conf_file] [-T conf_tag]", am_get_progname(),
145#ifdef HAVE_SYSLOG
146# ifdef LOG_DAEMON
147	  "|\"syslog[:facility]\"]"
148# else /* not LOG_DAEMON */
149	  "|\"syslog\"]"
150# endif /* not LOG_DAEMON */
151#else /* not HAVE_SYSLOG */
152	  "]"
153#endif /* not HAVE_SYSLOG */
154	  );
155
156#ifdef HAVE_MAP_NIS
157  fputs(" [-y nis-domain]\n", stderr);
158#else /* not HAVE_MAP_NIS */
159  fputc('\n', stderr);
160#endif /* HAVE_MAP_NIS */
161
162  show_opts('x', xlog_opt);
163#ifdef DEBUG
164  show_opts('D', dbg_opt);
165#endif /* DEBUG */
166  fprintf(stderr, "\t[directory mapname [-map_options]] ...\n");
167}
168
169
170void
171get_args(int argc, char *argv[])
172{
173  int opt_ch, i;
174  FILE *fp = stdin;
175  char getopt_arguments[] = "+nprvSa:c:d:k:l:o:t:w:x:y:C:D:F:T:O:HA:";
176  char *getopt_args;
177  int print_version = 0;	/* 1 means we should print version info */
178
179#ifdef HAVE_GNU_GETOPT
180  getopt_args = getopt_arguments;
181#else /* ! HAVE_GNU_GETOPT */
182  getopt_args = &getopt_arguments[1];
183#endif /* HAVE_GNU_GETOPT */
184
185  /* if no arguments were passed, try to use /etc/amd.conf file */
186  if (argc <= 1)
187    use_conf_file = 1;
188
189  while ((opt_ch = getopt(argc, argv, getopt_args)) != -1)
190    switch (opt_ch) {
191
192    case 'a':
193      if (*optarg != '/') {
194	fprintf(stderr, "%s: -a option must begin with a '/'\n",
195		am_get_progname());
196	exit(1);
197      }
198      gopt.auto_dir = optarg;
199      break;
200
201    case 'c':
202      gopt.am_timeo = atoi(optarg);
203      if (gopt.am_timeo <= 0)
204	gopt.am_timeo = AM_TTL;
205      break;
206
207    case 'd':
208      gopt.sub_domain = optarg;
209      break;
210
211    case 'k':
212      gopt.karch = optarg;
213      break;
214
215    case 'l':
216      gopt.logfile = optarg;
217      break;
218
219    case 'n':
220      gopt.flags |= CFM_NORMALIZE_HOSTNAMES;
221      break;
222
223    case 'o':
224      gopt.op_sys_ver = optarg;
225      break;
226
227    case 'p':
228     gopt.flags |= CFM_PRINT_PID;
229      break;
230
231    case 'r':
232      gopt.flags |= CFM_RESTART_EXISTING_MOUNTS;
233      break;
234
235    case 't':
236      /* timeo.retrans (also affects toplvl mounts) */
237      {
238	char *dot = strchr(optarg, '.');
239	int i;
240	if (dot)
241	  *dot = '\0';
242	if (*optarg) {
243	  for (i=0; i<AMU_TYPE_MAX; ++i)
244	    gopt.amfs_auto_timeo[i] = atoi(optarg);
245	}
246	if (dot) {
247	  for (i=0; i<AMU_TYPE_MAX; ++i)
248	    gopt.amfs_auto_retrans[i] = atoi(dot + 1);
249	  *dot = '.';
250	}
251      }
252      break;
253
254    case 'v':
255      /*
256       * defer to print version info after every variable had been
257       * initialized.
258       */
259      print_version++;
260      break;
261
262    case 'w':
263      gopt.am_timeo_w = atoi(optarg);
264      if (gopt.am_timeo_w <= 0)
265	gopt.am_timeo_w = AM_TTL_W;
266      break;
267
268    case 'x':
269      usage += switch_option(optarg);
270      break;
271
272    case 'y':
273#ifdef HAVE_MAP_NIS
274      gopt.nis_domain = optarg;
275#else /* not HAVE_MAP_NIS */
276      plog(XLOG_USER, "-y: option ignored.  No NIS support available.");
277#endif /* not HAVE_MAP_NIS */
278      break;
279
280    case 'A':
281      gopt.arch = optarg;
282      break;
283
284    case 'C':
285      gopt.cluster = optarg;
286      break;
287
288    case 'D':
289#ifdef DEBUG
290      usage += debug_option(optarg);
291#else /* not DEBUG */
292      fprintf(stderr, "%s: not compiled with DEBUG option -- sorry.\n",
293	      am_get_progname());
294#endif /* not DEBUG */
295      break;
296
297    case 'F':
298      amu_conf_file = optarg;
299      use_conf_file = 1;
300      break;
301
302    case 'H':
303      show_usage();
304      exit(1);
305      break;
306
307    case 'O':
308      gopt.op_sys = optarg;
309      break;
310
311    case 'S':
312      gopt.flags &= ~CFM_PROCESS_LOCK; /* turn process locking off */
313      break;
314
315    case 'T':
316      conf_tag = optarg;
317      break;
318
319    default:
320      usage = 1;
321      break;
322    }
323
324  /*
325   * amd.conf file: if not command-line arguments were used, or if -F was
326   * specified, then use that amd.conf file.  If the file cannot be opened,
327   * abort amd.  If it can be found, open it, parse it, and then close it.
328   */
329  if (use_conf_file && amu_conf_file) {
330    fp = fopen(amu_conf_file, "r");
331    if (!fp) {
332      char buf[128];
333      xsnprintf(buf, sizeof(buf), "Amd configuration file (%s)",
334		amu_conf_file);
335      perror(buf);
336      exit(1);
337    }
338    conf_in = fp;
339    conf_parse();
340    fclose(fp);
341    if (process_all_regular_maps() != 0)
342      exit(1);
343  }
344
345#ifdef DEBUG
346  usage += switch_option("debug");
347  /* initialize debug options */
348  if (!debug_flags)
349    debug_flags = D_CONTROL;	/* CONTROL = "daemon,amq,fork" */
350#endif /* DEBUG */
351
352  /* log information regarding amd.conf file */
353  if (use_conf_file && amu_conf_file)
354    plog(XLOG_INFO, "using configuration file %s", amu_conf_file);
355
356#ifdef HAVE_MAP_LDAP
357  /* ensure that if ldap_base is specified, that also ldap_hostports is */
358  if (gopt.ldap_hostports && !gopt.ldap_base) {
359    fprintf(stderr, "must specify both ldap_hostports and ldap_base\n");
360    exit(1);
361  }
362#endif /* HAVE_MAP_LDAP */
363
364  if (usage) {
365    show_usage();
366    exit(1);
367  }
368
369  while (optind <= argc - 2) {
370    char *dir = argv[optind++];
371    char *map = argv[optind++];
372    char *opts = "";
373    if (argv[optind] && *argv[optind] == '-')
374      opts = &argv[optind++][1];
375
376    root_newmap(dir, opts, map, NULL);
377  }
378
379  if (optind == argc) {
380    /*
381     * Append domain name to hostname.
382     * sub_domain overrides hostdomain
383     * if given.
384     */
385    if (gopt.sub_domain)
386      hostdomain = gopt.sub_domain;
387    if (*hostdomain == '.')
388      hostdomain++;
389    xstrlcat(hostd, ".", sizeof(hostd));
390    xstrlcat(hostd, hostdomain, sizeof(hostd));
391
392#ifdef MOUNT_TABLE_ON_FILE
393    if (amuDebug(D_MTAB))
394      if (gopt.debug_mtab_file)
395        mnttab_file_name = gopt.debug_mtab_file; /* user supplied debug mtab path */
396      else
397	mnttab_file_name = DEBUG_MNTTAB_FILE; /* default debug mtab path */
398    else
399      mnttab_file_name = MNTTAB_FILE_NAME;
400#else /* not MOUNT_TABLE_ON_FILE */
401    if (amuDebug(D_MTAB))
402      dlog("-D mtab option ignored");
403# ifdef MNTTAB_FILE_NAME
404    mnttab_file_name = MNTTAB_FILE_NAME;
405# endif /* MNTTAB_FILE_NAME */
406#endif /* not MOUNT_TABLE_ON_FILE */
407
408    /*
409     * If the kernel architecture was not specified
410     * then use the machine architecture.
411     */
412    if (gopt.karch == NULL)
413      gopt.karch = gopt.arch;
414
415    if (gopt.cluster == NULL)
416      gopt.cluster = hostdomain;
417
418    /* sanity checking, normalize values just in case (toplvl too) */
419    for (i=0; i<AMU_TYPE_MAX; ++i) {
420      if (gopt.amfs_auto_timeo[i] == 0)
421	gopt.amfs_auto_timeo[i] = AMFS_AUTO_TIMEO;
422      if (gopt.amfs_auto_retrans[i] == 0)
423	gopt.amfs_auto_retrans[i] = AMFS_AUTO_RETRANS(i);
424      if (gopt.amfs_auto_retrans[i] == 0)
425	gopt.amfs_auto_retrans[i] = 3;	/* under very unusual circumstances, could be zero */
426    }
427  }
428
429  /* finally print version string and exit, if asked for */
430  if (print_version) {
431    fputs(get_version_string(), stderr);
432    exit(0);
433  }
434
435  if (switch_to_logfile(gopt.logfile, orig_umask,
436			(gopt.flags & CFM_TRUNCATE_LOG)) != 0)
437    plog(XLOG_USER, "Cannot switch logfile");
438
439  return;
440}
441