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[openldap] / clients / ud / main.c
1 /* $OpenLDAP$ */
2 /*
3  * Copyright 1998-2000 The OpenLDAP Foundation, All Rights Reserved.
4  * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
5  */
6 /*
7  * Copyright (c) 1991, 1992, 1993 
8  * Regents of the University of Michigan.  All rights reserved.
9  *
10  * Redistribution and use in source and binary forms are permitted
11  * provided that this notice is preserved and that due credit is given
12  * to the University of Michigan at Ann Arbor. The name of the University
13  * may not be used to endorse or promote products derived from this
14  * software without specific prior written permission. This software
15  * is provided ``as is'' without express or implied warranty.
16  *
17  * The University of Michigan would like to thank the following people for
18  * their contributions to this piece of software:
19  *
20  *      Robert Urquhart    <robert@sfu.ca>
21  *      Simon Fraser University, Academic Computing Services
22  */
23
24 #include "portable.h"
25
26 #include <stdio.h>
27
28 #include <ac/stdlib.h>
29
30 #include <setjmp.h>
31
32 #ifdef HAVE_PWD_H
33 #include <pwd.h>
34 #endif
35
36 #include <ac/signal.h>
37 #include <ac/string.h>
38 #include <ac/ctype.h>
39 #include <ac/termios.h>
40 #include <ac/time.h>
41 #include <ac/unistd.h>
42
43 #ifdef HAVE_SYS_FILE_H
44 #include <sys/file.h>
45 #endif
46
47 #include <ldap.h>
48
49 #include "ldap_defaults.h"
50 #include "ud.h"
51
52 /*
53  *  Used with change_base() to indicate which base we are changing.
54  */
55 #define BASE_SEARCH     0
56 #define BASE_GROUPS     1
57
58 #define iscom(x)        (!strncasecmp((x), cmd, strlen(cmd)))
59
60 static char *server = NULL;
61 static char *config_file = UD_CONFIG_FILE;
62 static char *filter_file = FILTERFILE;
63 static int ldap_port = 0;
64 static int dereference = TRUE;
65
66 char *default_bind_object = NULL;
67
68 char *bound_dn;                 /* bound user's Distinguished Name */
69 char *group_base;               /* place in LDAP tree where groups are */
70 char *search_base;              /* place in LDAP tree where searches start */
71
72 static jmp_buf env;             /* spot to jump to on an interrupt */
73
74 int lpp;                        /* lines per page */
75 int verbose;                    /* 1 if verbose mode on */
76 int col_size;                   /* characters across on the screen */
77 int bind_status;                /* user's bind status */
78
79 LDAP *ld;                       /* LDAP descriptor */
80 LDAPFiltDesc *lfdp;             /* LDAP filter descriptor */
81
82 #ifdef DEBUG
83 int debug;                      /* debug flag */
84 #endif
85 int ldebug;                     /* library debug flag */
86
87 #ifndef HAVE_MKVERSION
88 char Version[] = OPENLDAP_PACKAGE " " OPENLDAP_VERSION " UserDirectory (ud)";
89 #endif
90
91 int
92 main( int argc, char **argv )
93 {
94         register int c;                         /* for parsing argv */
95         register char *cp;                      /* for parsing Version */
96
97         verbose = 1;
98
99         /*  handle argument list */
100         while ((c = getopt(argc, argv, "c:d:Df:l:p:s:u:vV")) != -1) {
101                 switch (c) {
102                 case 'l' :
103                         ldebug |= (int) strtol(optarg, (char **) NULL, 0);
104                         break;
105                 case 'd' :
106 #ifdef DEBUG
107                         debug |= (int) strtol(optarg, (char **) NULL, 0);
108 #endif
109                         break;
110                 case 's' :
111                         server = strdup(optarg);
112                         break;
113                 case 'c' :
114                         filter_file = strdup(optarg);
115                         break;
116                 case 'f' :
117                         config_file = optarg;
118                         break;
119                 case 'p' :
120                         ldap_port = atoi(optarg);
121                         break;
122                 case 'u' :
123                         default_bind_object = strdup(optarg);
124                         break;
125                 case 'v' :
126                         verbose = 1;    /* this is the default anyways... */
127                         break;
128                 case 'V' :
129                         verbose = 0;
130                         break;
131                 case 'D' :
132                         printf("\n\n  Debug flag values\n\n");
133                         printf("    1  function trace\n");
134                         printf("    2  find() information\n");
135                         printf("    4  group information\n");
136                         printf("    8  mod() information\n");
137                         printf("   16  parsing information\n");
138                         printf("   32  output information\n");
139                         printf("   64  authentication information\n");
140                         printf("  128  initialization information\n\n");
141                         format("These are masks, and may be added to form multiple debug levels.  For example, '-d 35' would perform a function trace, print out information about the find() function, and would print out information about the output routines too.", 75, 2);
142                         exit( EXIT_SUCCESS );
143                 default:
144                         fprintf(stderr, "Usage: %s [-c filter-config-file] [-d debug-level] [-l ldap-debug-level] [-s server] [-p port] [-V]\n", argv[0]);
145                         exit( EXIT_FAILURE);
146                         /* NOTREACHED */
147                 }
148         }
149
150         /* just print the first line of Version[] */
151         cp = strchr(Version, '\t');
152         if (cp != NULL)
153                 *cp = '\0';
154         printf(Version);
155         fflush( stdout );
156
157 #ifdef SIGPIPE
158         (void) SIGNAL (SIGPIPE, SIG_IGN);
159 #endif
160
161         initialize_client();
162         initialize_attribute_strings();
163
164         /* now tackle the user's commands */
165         do_commands();
166         /* NOTREACHED */
167
168         return 0;
169 }
170
171 void
172 do_commands( void )
173 {
174         LDAPMessage *mp;                        /* returned by find() */
175         register char *cp;                      /* misc char pointer */
176         register char *ap;                      /* misc char pointer */
177         static char cmd[MED_BUF_SIZE];          /* holds the command */
178         static char input[MED_BUF_SIZE];        /* buffer for input */
179
180 #ifdef DEBUG
181         if (debug & D_TRACE)
182                 printf("->do_commands()\n");
183 #endif
184         if (verbose) 
185                 printf("\n  Enter a command.  If you need help, type 'h' or '?' and hit RETURN.\n\n");
186         /* jump here on an interrupt */
187         (void) setjmp(env);
188         for (;;) {
189                 printf("* ");
190                 fflush(stdout);
191                 cp = input;
192 /* Temporary kludge - if cp is null, dumps core under Solaris */
193                 if (cp == NULL)
194                         break;
195                 fetch_buffer(input, sizeof(input), stdin);
196                 if (*input == '\0') {
197                         putchar('\n');
198                         continue;
199                 }
200                 while (isspace((unsigned char)*cp))
201                         cp++;   
202                 ap = cmd;
203                 if (memset(cmd, '\0', sizeof(cmd)) == NULL)
204                         fatal("memset");
205                 while (!isspace((unsigned char)*cp) && (*cp != '\0'))
206                         *ap++ = *cp++;
207                 if (iscom("status"))
208                         status();
209                 else if (iscom("stop") || iscom("quit"))
210                         break;
211                 else if (iscom("cb") || iscom("cd") || iscom("moveto")) {
212                         while (isspace((unsigned char)*cp) && (*cp != '\0'))
213                                 cp++;
214                         if (!strncasecmp(cp, "base", 4))
215                                 cp += 4;
216                         change_base(BASE_SEARCH, &search_base, nextstr(cp));
217                 }
218                 else if (iscom("memberships"))
219                         (void) list_memberships(nextstr(cp));
220                 else if (iscom("list"))
221                         (void) list_groups(nextstr(cp));
222                 else if (iscom("groupbase"))
223                         change_base(BASE_GROUPS, &group_base, nextstr(cp));
224                 else if (iscom("find") || iscom("display") || iscom("show")) {
225                         cp = nextstr(cp);
226                         if ((mp = find(cp, FALSE)) != NULL) {
227                                 parse_answer(mp);
228                                 print_an_entry();
229                                 ldap_msgfree(mp);
230                         }
231                         else
232                                 printf(" Could not find \"%s\".\n", cp);
233                 }
234 #ifdef UOFM
235                 else if (iscom("vedit") && isatty( 1 )) {
236 #else
237                 else if (iscom("vedit")) {
238 #endif
239                         (void) edit(nextstr(cp));
240                 }
241                 else if (iscom("modify") || iscom("change") || iscom("alter"))
242                         (void) modify(nextstr(cp));
243                 else if (iscom("bind") || iscom("iam"))
244                         (void) auth(nextstr(cp), 0);
245                 else if ((cmd[0] == '?') || iscom("help"))
246                         print_help(nextstr(cp));
247                 else if (iscom("join") || iscom("subscribe")) 
248                         (void) x_group(G_JOIN, nextstr(cp));
249                 else if (iscom("resign") || iscom("unsubscribe"))
250                         (void) x_group(G_RESIGN, nextstr(cp));
251                 else if (!strncasecmp("create", cmd, strlen(cmd)))
252                         add_group(nextstr(cp));
253                 else if (!strncasecmp("remove", cmd, strlen(cmd)))
254                         remove_group(nextstr(cp));
255                 else if (!strncasecmp("purge", cmd, strlen(cmd)))
256                         purge_group(nextstr(cp));
257                 else if (!strncasecmp("verbose", cmd, strlen(cmd))) {
258                         verbose = 1 - verbose;
259                         if (verbose)
260                                 printf("  Verbose mode has been turned on.\n");
261                 }
262                 else if (!strncasecmp("dereference", cmd, strlen(cmd))) {
263                         int deref;
264                         dereference = 1 - dereference;
265                         if (dereference == 1) {
266                                 deref = LDAP_DEREF_ALWAYS;
267                         } else {
268                                 deref = LDAP_DEREF_NEVER;
269                         }
270                         ldap_set_option(ld, LDAP_OPT_DEREF, (void *) &deref);
271                 }
272                 else if (!strncasecmp("tidy", cmd, strlen(cmd)))
273                         tidy_up();
274                 else if (cmd[0] == '\0')
275                         putchar('\n');
276                 else
277                         printf("  Invalid command.  Type \"help commands.\"\n");
278         }
279         printf(" Thank you!\n");
280         
281         ldap_unbind(ld);
282         exit( EXIT_SUCCESS );
283         /* NOTREACHED */
284 }
285
286 void
287 status( void )
288 {
289         register char **rdns;
290
291 #ifdef DEBUG
292         if (debug & D_TRACE)
293                 printf("->status()\n");
294 #endif
295         printf("  Current server is %s", server != NULL ? server : "<default>" );
296         if ( ld != NULL ) {
297                 char *host = NULL;
298                 
299                 ldap_get_option(ld, LDAP_OPT_HOST_NAME, &host);
300
301                 if ( host != NULL &&
302                         ( server == NULL || strcasecmp( host, server ) != 0 ) )
303                 {
304                         printf( " (%s)", host );
305                 }
306         }
307         putchar( '\n' );
308         printbase("  Search base is ", search_base);
309         printbase("  Group  base is ", group_base);
310         if ( bound_dn != NULL ) {
311                 rdns = ldap_explode_dn(bound_dn, TRUE);
312                 printf("  Bound as \"%s\"\n", *rdns);
313                 ldap_value_free(rdns);
314         } else {
315                 printf("  Bound as Nobody\n" );
316         }
317         printf( "  Verbose mode is %sabled\n", ( verbose ? "en" : "dis" ));
318         if ( ld != NULL ) {
319                 int deref = LDAP_DEREF_NEVER;
320                 ldap_get_option(ld, LDAP_OPT_DEREF, &deref);
321                 printf( "  Aliases are %sbeing dereferenced\n",
322                         ( deref == LDAP_DEREF_ALWAYS ) ? "" : "not" );
323         }
324 }
325
326 void
327 change_base( int type, char **base, char *s )
328 {
329         register char *cp;                      /* utility pointers */
330         char **rdns;                            /* for parsing */
331         char *output_string = NULL;             /* for nice output */
332         int num_picked;                         /* # of selected base */
333         int j;                                  /* used with num_picked */
334         int i = 1;                              /* index into choices array */
335         int matches;                            /* # of matches found */
336         int rest = 1;                           /* # left to display */
337         char tmp[MED_BUF_SIZE];                 /* temporary buffer */
338         static char *choices[MED_BUF_SIZE];     /* bases from which to choose */
339         static char resp[SMALL_BUF_SIZE];       /* for prompting user */
340         static char buf[MED_BUF_SIZE];
341         static char *attrs[] = { "objectClass", NULL };
342         LDAPMessage *mp;                        /* results from a search */
343         LDAPMessage *ep;                        /* for going thru bases */
344
345 #ifdef DEBUG
346         if (debug & D_TRACE)
347                 printf("->change_base(%s, %s)\n", s, s);
348 #endif
349         /*
350          *  If s is NULL we need to prompt the user for an argument.
351          */
352         if (s == NULL) {
353                 if (verbose) {
354                         printf("  You need to specify how the base is to be changed.  Valid choices are:\n");
355                         printf("     ?       - list the choices immediately below this level\n");
356                         printf("     ..      - move up one level in the Directory tree\n");
357                         printf("     root    - move to the root of the Directory tree\n");
358                         printf("     default - move to the default level built into this program\n");
359                         printf("     <entry> - move to the entry specified\n");
360                 }
361                 printf("  Change base to? ");
362                 fflush(stdout);
363                 fetch_buffer(buf, sizeof(buf), stdin);
364                 if ((buf != NULL) && (buf[0] != '\0'))
365                         s = buf;
366                 else
367                         return;
368         }
369
370         /* set the output string */
371         if (type == BASE_SEARCH)
372                 output_string = "  Search base is now ";
373         else if (type == BASE_GROUPS)
374                 output_string = "  Group base is now ";
375
376         if (!strcasecmp(s, "root")) {
377                 StrFreeDup(base, NULL);
378                 printbase("  Search base is ", *base);
379                 return;
380         }
381
382         /*
383          *  User wants to ascend one level in the LDAP tree.
384          *  Easy:  Just strip off the first element of the
385          *  current search base, unless it's the root, in
386          *  which case we just do nothing.
387          */
388         if (!strcasecmp(s, "..")) {
389                 if (*base == NULL) {
390                         printf("  You are already at the root\n");
391                         return;
392                 }
393                 cp = strchr(*base, '=');
394                 cp++;
395                 /*
396                  *  If there isn't a second "=" in the base, then this was
397                  *  a one element base, and so now it should be NULL.
398                  */
399                 if ((cp = strchr(cp, '=')) == NULL)
400                         StrFreeDup(base, NULL);
401                 else {
402                         /*
403                          *  Back up to the start of this
404                          *
405                          *      attr=value
406                          *
407                          *  sequence now that 'cp' is pointing to the '='.
408                          */
409                         while(!isspace((unsigned char)*cp))
410                                 cp--;
411                         cp++;
412                         /*
413                          *  Goofy, but need to do it this way since both *base
414                          *  and cp point into the same chunk of memory, and
415                          *  we want to free *base, but keep part of it around.
416                          */
417                         cp = strdup(cp);
418                         StrFreeDup(base, cp);
419                         Free(cp);
420                 }
421                 printbase(output_string, *base);
422                 return;
423         }
424
425         /* user wants to see what is directly below this level */
426         if (*s == '?') {
427                 /*
428                  *  Fetch the list of entries directly below this level.
429                  *  Once we have the list, we will print it for the user, one
430                  *  screenful at a time.  At the end of each screen, we ask
431                  *  the user if they want to see more.  They can also just
432                  *  type a number at that point too.
433                  */
434                 if (ldap_search_s(ld, *base, LDAP_SCOPE_ONELEVEL, NULL, attrs, FALSE, &mp) != LDAP_SUCCESS) {
435                         int ld_errno = 0;
436                         ldap_get_option(ld, LDAP_OPT_ERROR_NUMBER, &ld_errno);
437                         if ((ld_errno == LDAP_TIMELIMIT_EXCEEDED) ||
438                             (ld_errno == LDAP_SIZELIMIT_EXCEEDED)) {
439                                 if (verbose) {
440                                         printf("  Your query was too general and a limit was exceeded.  The results listed\n");
441                                         printf("  are not complete.  You may want to try again with a more refined query.\n\n");
442                                 }
443                                 else
444                                         printf("  Time or size limit exceeded.  Partial results follow.\n\n");
445                         } else {
446                                 ldap_perror(ld, "ldap_search_s");
447                                 return;
448                         }
449                 }
450                 if ((matches = ldap_count_entries(ld, mp)) < 1) {
451                         printf("  There is nothing below this level.\n");
452                         (void) ldap_msgfree(mp);
453                         return;
454                 }
455                 num_picked = 0;
456                 printf(" There are %d choices:\n", matches);
457                 for (ep = ldap_first_entry(ld, mp); ep != NULL; ep = ldap_next_entry(ld, ep)) {
458                         /*
459                          *  Put the last component of the DN into 'lastDN'.
460                          *  If we are at the root level, convert any country
461                          *  codes to recognizable names for printing.
462                          */
463                         choices[i] = ldap_get_dn(ld, ep);
464                         printf(" %2d. %s\n", i, choices[i]);
465                         i++;
466                         if ((rest++ > (lpp - 3)) && (i < matches)) {
467                                 printf("More? ");
468                                 fflush(stdout);
469                                 fetch_buffer(resp, sizeof(resp), stdin);
470                                 if ((resp[0] == 'n') || (resp[0] == 'N'))
471                                         break;
472                                 else if (((num_picked = atoi(resp)) != 0) && (num_picked < i))
473                                         break;
474                                 rest = 1;
475                         }
476                 }
477                 for (;;) {
478                         if (num_picked != 0) {
479                                 j = num_picked;
480                                 num_picked = 0;
481                         }
482                         else {
483                                 printf(" Which number? ");
484                                 fflush(stdout);
485                                 fetch_buffer(resp, sizeof(resp), stdin);
486                                 j = atoi(resp);
487                         }
488                         if (j == 0) {
489                                 (void) ldap_msgfree(mp);
490                                 for (i = 0; i < matches; i++)
491                                         ldap_memfree(choices[i]);
492                                 return;
493                         }
494                         if ((j < 1) || (j >= i))
495                                 printf(" Invalid number\n");
496                         else {
497                                 StrFreeDup(base, choices[j]);
498                                 printbase(output_string, *base);
499                                 (void) ldap_msgfree(mp);
500                                 for (i = 0; choices[i] != NULL; i++)
501                                         ldap_memfree(choices[i]);
502                                 return;
503                         }
504                 }
505         }
506         /* set the search base back to the original default value */
507         else if (!strcasecmp(s, "default")) {
508                 if (type == BASE_SEARCH)
509                         StrFreeDup(base, NULL);
510                 else if (type == BASE_GROUPS)
511                         StrFreeDup(base, UD_WHERE_GROUPS_ARE_CREATED);
512                 printbase(output_string, *base);
513         }
514         /* they typed in something -- see if it is legit */
515         else {
516                 /* user cannot do something like 'cb 33' */
517                 if (atoi(s) != 0) {
518                         printf("  \"%s\" is not a valid search base\n", s);
519                         printf("  Base unchanged.\n");
520                         printf("  Try using 'cb ?'\n");
521                         return;
522                 }
523                 /* was it a fully-specified DN? */
524                 if (vrfy(s)) {
525                         StrFreeDup(base, s);
526                         printbase(output_string, *base);
527                         return;
528                 }
529                 /* was it a RDN relative to the current base? */
530                 sprintf(tmp, "ou=%s, %s", s, *base);
531                 if (vrfy(tmp)) {
532                         StrFreeDup(base, tmp);
533                         printbase(output_string, *base);
534                         return;
535                 }
536                 printf("  \"%s\" is not a valid base\n  Base unchanged.\n", s);
537         }
538 }
539
540 void
541 initialize_client( void )
542 {
543         FILE *fp;                               /* for config file */
544         static char buffer[MED_BUF_SIZE];       /* for input */
545 #ifdef HAVE_GETPWUID
546         struct passwd *pw;                      /* for getting the home dir */
547 #endif
548         register char *cp;                      /* for fiddling with buffer */
549         char *config;                           /* config file to use */
550         static char bp[1024];                   /* for tty set-up */
551
552 #ifdef DEBUG
553         if (debug & D_TRACE)
554                 printf("->initialize_client()\n");
555 #endif
556
557         if (ldebug) {
558                 ber_set_option( NULL, LBER_OPT_DEBUG_LEVEL, &ldebug );
559                 ldap_set_option( NULL, LDAP_OPT_DEBUG_LEVEL, &ldebug );
560         }
561
562         /*
563          *  A per-user config file has precedence over any system-wide
564          *  config file, if one exists.
565          */
566 #ifdef HAVE_GETPWUID
567         if ((pw = getpwuid((uid_t) geteuid())) == (struct passwd *) NULL)
568                 config = config_file;
569         else {
570                 if (pw->pw_dir == NULL)
571                         config = config_file;
572                 else {
573                         sprintf(buffer, "%s/%s", pw->pw_dir,
574                             UD_USER_CONFIG_FILE);
575                         if (access(buffer, R_OK) == 0)
576                                 config = buffer;
577                         else
578                                 config = config_file;
579                 }
580         }
581 #else
582         config = config_file;
583 #endif /* getpwduid() */
584 #ifdef DEBUG
585         if (debug & D_INITIALIZE)
586                 printf("Using config file %s\n", config);
587 #endif
588
589         /*
590          *  If there is a config file, read it.
591          *
592          *  Could have lines that look like this:
593          *
594          *      server <ip-address or domain-name>
595          *      base   <default search base>
596          *      groupbase <default place where groups are created>
597          *
598          */
599         if ((fp = fopen(config, "r")) != NULL) {
600                 while (fgets(buffer, sizeof(buffer), fp) != NULL) {
601                         buffer[strlen(buffer) - 1] = '\0';
602                         if (!strncasecmp(buffer, "server", 6)) {
603                                 if (server != NULL)
604                                         continue;
605                                 cp = buffer + 6;
606                                 while (isspace((unsigned char)*cp))
607                                         cp++;
608                                 if ((*cp == '\0') || (*cp == '\n'))
609                                         continue;
610                                 server = strdup(cp);
611                         } 
612                         else if (!strncasecmp(buffer, "host", 4)) {
613                                 if (server != NULL)
614                                         continue;
615                                 cp = buffer + 4;
616                                 while (isspace((unsigned char)*cp))
617                                         cp++;
618                                 if ((*cp == '\0') || (*cp == '\n'))
619                                         continue;
620                                 server = strdup(cp);
621                         }
622                         else if (!strncasecmp(buffer, "base", 4)) {
623                                 cp = buffer + 4;
624                                 while (isspace((unsigned char)*cp))
625                                         cp++;
626                                 if ((*cp == '\0') || (*cp == '\n'))
627                                         continue;
628                                 search_base = strdup(cp);
629                         }
630                         else if (!strncasecmp(buffer, "groupbase", 9)) {
631                                 cp = buffer + 9;
632                                 while (isspace((unsigned char)*cp))
633                                         cp++;
634                                 if ((*cp == '\0') || (*cp == '\n'))
635                                         continue;
636                                 group_base = strdup(cp);
637                         }
638                         else
639                                 fprintf(stderr, "?? -> %s\n", buffer);
640                 }
641         }
642         if (group_base == NULL)
643                 group_base = strdup(UD_WHERE_GROUPS_ARE_CREATED);
644
645         /*
646          *  Set up our LDAP connection.  The values of retry and timeout
647          *  are meaningless since we will immediately be doing a null bind
648          *  because we want to be sure to use TCP, not UDP.
649          */
650         if ((ld = ldap_init(server, ldap_port)) == NULL) {
651                 fprintf(stderr, "  Initialization of LDAP session failed.\n");
652                 exit( EXIT_FAILURE );
653                 /* NOTREACHED */
654         }
655         if (ldap_bind_s(ld, (char *) default_bind_object, NULL,
656             LDAP_AUTH_SIMPLE) != LDAP_SUCCESS) {
657                 ldap_perror(ld, "  ldap_bind_s");
658                 exit( EXIT_FAILURE );
659                 /* NOTREACHED */
660         }
661         {
662                 int deref = LDAP_DEREF_ALWAYS;
663                 ldap_set_option(ld, LDAP_OPT_DEREF, (void *) &deref);
664         }
665         bind_status = UD_NOT_BOUND;
666         if ( default_bind_object != NULL ) {
667                 bound_dn = strdup(default_bind_object);
668         } else {
669                 bound_dn = NULL;
670         }
671
672         /* enabled local caching of ldap results, 15 minute lifetime */
673         ldap_enable_cache( ld, 60 * 15, 0 );            /* no memory limit */
674
675         /* initialize the search filters */
676         if ((lfdp = ldap_init_getfilter(filter_file)) == NULL) {
677                 fprintf(stderr, "  Problem with ldap_init_getfilter\n");
678                 fatal(filter_file);
679                 /*NOTREACHED*/
680         }
681
682         /* terminal initialization stuff goes here */
683         lpp = DEFAULT_TTY_HEIGHT;
684         col_size = DEFAULT_TTY_WIDTH;
685
686         (void) SIGNAL (SIGINT, attn);
687
688 #ifndef NO_TERMCAP
689         {
690         char *term;
691
692         if (((term = getenv("TERM")) == NULL) || (tgetent(bp, term) <= 0))
693                 return;
694         else {
695 #ifdef TIOCGWINSZ
696                 struct winsize win;             /* for tty set-up */
697                 if (ioctl(fileno(stdout), TIOCGWINSZ, &win) >= 0) {
698                         if ((lpp = win.ws_row) == 0)
699                                 lpp = tgetnum("li");
700                         if ((col_size = win.ws_col) == 0)
701                                 col_size = tgetnum("co");
702                         if ((lpp <= 0) || tgetflag("hc"))
703                                 lpp = DEFAULT_TTY_HEIGHT;
704                         if ((col_size <= 0) || tgetflag("hc"))
705                                 col_size = DEFAULT_TTY_WIDTH;
706                         (void) SIGNAL (SIGWINCH, chwinsz);
707                 } else
708 #endif
709                 {
710                         lpp = tgetnum("li");
711                         col_size = tgetnum("co");
712                 }
713         }
714         }
715 #endif
716 }
717
718 RETSIGTYPE
719 attn( int sig )
720 {
721         fflush(stderr);
722         fflush(stdout);
723         printf("\n\n  INTERRUPTED!\n");
724
725         (void) SIGNAL_REINSTALL (SIGINT, attn);
726
727         longjmp(env, 1);
728 }
729
730 #if !defined(NO_TERMCAP) && defined(TIOCGWINSZ)
731 RETSIGTYPE
732 chwinsz( int sig )
733 {
734         struct winsize win;
735
736         (void) SIGNAL (SIGWINCH, SIG_IGN);
737         if (ioctl(fileno(stdout), TIOCGWINSZ, &win) != -1) {
738                 if (win.ws_row != 0)
739                         lpp = win.ws_row;
740                 if (win.ws_col != 0)
741                         col_size = win.ws_col;
742         }
743
744         (void) SIGNAL_REINSTALL (SIGWINCH, chwinsz);
745 }
746 #endif