1: /*
2: * $Id: init.c,v 1.7 2025/03/24 04:05:36 snw Exp $
3: * FreeM initialization
4: *
5: *
6: * Author: Serena Willis <snw@coherent-logic.com>
7: * Copyright (C) 1998 MUG Deutschland
8: * Copyright (C) 2020, 2025 Coherent Logic Development LLC
9: *
10: *
11: * This file is part of FreeM.
12: *
13: * FreeM is free software: you can redistribute it and/or modify
14: * it under the terms of the GNU Affero Public License as published by
15: * the Free Software Foundation, either version 3 of the License, or
16: * (at your option) any later version.
17: *
18: * FreeM is distributed in the hope that it will be useful,
19: * but WITHOUT ANY WARRANTY; without even the implied warranty of
20: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21: * GNU Affero Public License for more details.
22: *
23: * You should have received a copy of the GNU Affero Public License
24: * along with FreeM. If not, see <https://www.gnu.org/licenses/>.
25: *
26: * $Log: init.c,v $
27: * Revision 1.7 2025/03/24 04:05:36 snw
28: * Replace crlf with frm_crlf to avoid symbol conflict with readline on OS/2
29: *
30: * Revision 1.6 2025/03/09 19:14:25 snw
31: * First phase of REUSE compliance and header reformat
32: *
33: *
34: * SPDX-FileCopyrightText: (C) 2025 Coherent Logic Development LLC
35: * SPDX-License-Identifier: AGPL-3.0-or-later
36: **/
37:
38: #include <stdio.h>
39: #include <stdlib.h>
40: #include <string.h>
41: #include <unistd.h>
42: #include <limits.h>
43: #include <sys/types.h>
44: #include <sys/stat.h>
45: #include <pwd.h>
46: #include <time.h>
47: #include <errno.h>
48: #include <sys/ioctl.h>
49:
50: #if !defined(__APPLE__) && !defined(__gnu_hurd__) && !defined(EMSCRIPTEN)
51: # if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__AMIGA)
52: # include <termios.h>
53: # if !defined(__AMIGA)
54: # define TCGETA TIOCGETA
55: # define TCSETA TIOCSETA
56: # endif
57: # define termio termios
58: # else
59: # if !defined(MSDOS)
60: # include <termio.h>
61: # endif
62: # endif
63: #else
64: # include <termios.h>
65: #endif
66:
67: #include "config.h"
68:
69: #if defined(HAVE_MWAPI_MOTIF)
70: # include <Xm/Xm.h>
71: #endif
72:
73: #include "mpsdef.h"
74: #include "transact.h"
75: #include "namespace.h"
76: #include "events.h"
77: #include "mdebug.h"
78: #include "shmmgr.h"
79: #include "locktab.h"
80: #include "jobtab.h"
81: #include "datatypes.h"
82: #include "objects.h"
83:
84: #ifdef HAVE_LIBREADLINE
85: # if defined(HAVE_READLINE_READLINE_H)
86: # include <readline/readline.h>
87: # elif defined(HAVE_READLINE_H)
88: # include <readline.h>
89: # else /* !defined(HAVE_READLINE_H) */
90: extern char *readline ();
91: # endif /* !defined(HAVE_READLINE_H) */
92: char *cmdline = NULL;
93: #else /* !defined(HAVE_READLINE_READLINE_H) */
94: /* no readline */
95: #endif /* HAVE_LIBREADLINE */
96:
97: #ifdef HAVE_READLINE_HISTORY
98: # if defined(HAVE_READLINE_HISTORY_H)
99: # include <readline/history.h>
100: # elif defined(HAVE_HISTORY_H)
101: # include <history.h>
102: # else /* !defined(HAVE_HISTORY_H) */
103: extern void add_history ();
104: extern int write_history ();
105: extern int read_history ();
106: # endif /* defined(HAVE_READLINE_HISTORY_H) */
107: /* no history */
108: #endif /* HAVE_READLINE_HISTORY */
109:
110: #if defined(HAVE_WIRINGPI_H)
111: # include <wiringPi.h>
112: #endif
113:
114: #if !defined(PATH_MAX) && defined(_SCO_DS)
115: # define PATH_MAX 4096
116: #endif
117:
118: #if !defined(PATH_MAX) && defined(__gnu_hurd__)
119: # define PATH_MAX 1024
120: #endif
121:
122: #if !defined(PATH_MAX) && defined(__sun__)
123: # include <limits.h>
124: #endif
125:
126: #if defined(__NetBSD__) || defined(__FreeBSD__) || defined(__OpenBSD__)
127: # include <sys/syslimits.h>
128: #endif
129:
130: #define SHMKEY 0x990120
131: #define SHMSIZ 1048576
132:
133: void init_process(void);
134: void init_devtable(void);
135: void init_signals(void);
136: void init_timezone(void);
137: void init_freem_path(void);
138:
139: #if defined(HAVE_LIBREADLINE)
140: void init_readline(void);
141: #endif
142:
143: void init_execution_context(void);
144: void init_io(void);
145: void init_random_number(void);
146: void init_ztrap(void);
147: void init_ssvn(void);
148: void init_terminal(void);
149: void init_estack(void);
150:
151: void init_mwapi(void);
152:
153: short init (char *namespace_name)
154: {
155: short retval;
156:
157: init_process ();
158: init_devtable ();
159: init_signals ();
160: init_freem_path ();
161: init_timezone ();
162:
163: #if defined(HAVE_LIBREADLINE)
164: init_readline ();
165: #endif
166:
167: init_execution_context ();
168:
169: if (run_daemon == FALSE) {
170: init_io ();
171: }
172:
173: init_random_number ();
174: init_ztrap ();
175:
176: retval = shm_init (shm_init_size);
177:
178: if (retval == SHMS_GET_ERR) {
179: fprintf (stderr, "init: error initializing shared memory [errno %d]\r\n", errno);
180: exit (1);
181: }
182:
183: symtab_init ();
184: tp_init ();
185:
186: set_namespace (namespace_name, FALSE);
187:
188: if (first_process) {
189: fprintf (stderr, "init: we are the first process in the environment (pid %d)\r\n", pid);
190: }
191:
192: if (first_process) fprintf (stderr, "init: initializing job table\r\n");
193: jobtab_init ();
194:
195: if (first_process) fprintf (stderr, "init: adding job to job table\r\n");
196: job_init (FALSE);
197:
198: if (first_process) fprintf (stderr, "init: initializing structured system variables\r\n");
199: init_ssvn ();
200:
201: if (first_process) fprintf (stderr, "init: initializing terminal\r\n");
202: init_terminal ();
203:
204: if (first_process) fprintf (stderr, "init: initializing asynchronous events\r\n");
205: evt_init ();
206:
207: if (first_process) fprintf (stderr, "init: initializing debugger\r\n");
208: dbg_init ();
209:
210: if (first_process) fprintf (stderr, "init: initializing error stack\r\n");
211: init_estack();
212:
213: etrap[0] = EOL;
214: ecode[0] = EOL;
215: estack = 0;
216:
217: init_mwapi();
218:
219: if (merr () == OK) {
220: return TRUE;
221: }
222:
223: return FALSE;
224: }
225:
226: void init_process (void)
227: {
228: pid = getpid (); /* get $J = process ID */
229: umask (0); /* protection bits mask to full rights */
230: snprintf (fp_conversion, 9, "%%.%df\201", DBL_DIG);
231:
232: if (fp_mode) {
233: zprecise = DBL_DIG;
234: }
235: else {
236: zprecise = 100;
237: }
238: }
239:
240: void init_devtable (void)
241: {
242: register int i;
243: register int j;
244:
245: for (j = 0; j <= MAXDEV; j++) { /* init. translation tables */
246:
247: for (i = 0; i < 256; i++) {
248: G0I[j][i] = (char) i;
249: G0O[j][i] = (char) i;
250: G1I[j][i] = (char) i;
251: G1O[j][i] = (char) i;
252: }
253:
254: G0I[j][UNSIGN (EOL)] = NUL;
255: G0O[j][UNSIGN (EOL)] = NUL;
256: G1I[j][UNSIGN (EOL)] = NUL;
257: G1O[j][UNSIGN (EOL)] = NUL;
258: G0I[j][UNSIGN (DELIM)] = NUL;
259: G0O[j][UNSIGN (DELIM)] = NUL;
260: G1I[j][UNSIGN (DELIM)] = NUL;
261: G1O[j][UNSIGN (DELIM)] = NUL;
262: G0I[j][256] = EOL;
263: G0O[j][256] = EOL;
264: G1I[j][256] = EOL;
265: G1O[j][256] = EOL;
266:
267: }
268:
269: #ifdef SCO
270: #ifndef HACK_NOXLATE
271: G0I[HOME][245] = 64;
272: G0O[HOME][64] = 245; /* Paragraph */
273: G0I[HOME][142] = 91;
274: G0O[HOME][91] = 142; /* A umlaut */
275: G0I[HOME][153] = 92;
276: G0O[HOME][92] = 153; /* O umlaut */
277: G0I[HOME][154] = 93;
278: G0O[HOME][93] = 154; /* U umlaut */
279: G0I[HOME][132] = 123;
280: G0O[HOME][123] = 132; /* a umlaut */
281: G0I[HOME][148] = 124;
282: G0O[HOME][124] = 148; /* o umlaut */
283: G0I[HOME][129] = 125;
284: G0O[HOME][125] = 129; /* u umlaut */
285: G0I[HOME][225] = 126;
286: G0O[HOME][126] = 225; /* sharp s */
287: #endif/*HACK_NOXLATE*/
288:
289: /* DEC Special graphics */
290: G1I[HOME][254] = 96;
291: G1O[HOME][96] = 254; /* diamond */
292: G1I[HOME][176] = 97;
293: G1O[HOME][97] = 176; /* checker board */
294: G1I[HOME][241] = 99;
295: G1O[HOME][99] = 241; /* FF */
296: G1I[HOME][242] = 100;
297: G1O[HOME][100] = 242; /* CR */
298: G1I[HOME][243] = 101;
299: G1O[HOME][101] = 243; /* LF */
300: G1I[HOME][248] = 102;
301: G1O[HOME][102] = 248; /* degree sign */
302: G1I[HOME][241] = 103;
303: G1O[HOME][103] = 241; /* plus minus */
304: G1I[HOME][244] = 104;
305: G1O[HOME][104] = 244; /* NL */
306: G1I[HOME][251] = 105;
307: G1O[HOME][105] = 251; /* VT */
308: G1I[HOME][217] = 106;
309: G1O[HOME][106] = 217; /* lower right corner */
310: G1I[HOME][191] = 107;
311: G1O[HOME][107] = 191; /* upper right corner */
312: G1I[HOME][218] = 108;
313: G1O[HOME][108] = 218; /* upper left corner */
314: G1I[HOME][192] = 109;
315: G1O[HOME][109] = 192; /* lower left corner */
316: G1I[HOME][197] = 110;
317: G1O[HOME][110] = 197; /* cross */
318: G1I[HOME][200] = 111;
319: G1O[HOME][111] = 200; /* linescan 5 */
320: G1I[HOME][201] = 112;
321: G1O[HOME][112] = 201; /* linescan 4 */
322: G1I[HOME][196] = 113;
323: G1O[HOME][113] = 196; /* linescan 3 */
324: G1I[HOME][202] = 114;
325: G1O[HOME][114] = 202; /* linescan 2 */
326: G1I[HOME][203] = 115;
327: G1O[HOME][115] = 203; /* linescan 1 */
328: G1I[HOME][195] = 116;
329: G1O[HOME][116] = 195; /* left junction */
330: G1I[HOME][180] = 117;
331: G1O[HOME][117] = 180; /* right junction */
332: G1I[HOME][193] = 118;
333: G1O[HOME][118] = 193; /* lower junction */
334: G1I[HOME][194] = 119;
335: G1O[HOME][119] = 194; /* upper junction */
336: G1I[HOME][179] = 120;
337: G1O[HOME][120] = 179; /* vertival bar */
338: G1I[HOME][243] = 121;
339: G1O[HOME][121] = 243; /* lower equals */
340: G1I[HOME][242] = 122;
341: G1O[HOME][122] = 242; /* greater equals */
342: G1I[HOME][227] = 123;
343: G1O[HOME][123] = 227; /* pi */
344: G1I[HOME][246] = 124;
345: G1O[HOME][124] = 246; /* not equals */
346: G1I[HOME][128] = 125;
347: G1O[HOME][125] = 128; /* euro sign */
348: G1I[HOME][250] = 126;
349: G1O[HOME][126] = 250; /* centered dot */
350: #endif /* SCO */
351: }
352:
353: void init_signals (void)
354: {
355: sig_init ();
356: }
357:
358: void init_timezone (void)
359: {
360:
361: struct tm lt;
362: struct tm gt;
363:
364: unsigned long gmt;
365: unsigned long lmt;
366:
367: long clock;
368:
369: #ifdef __CYGWIN__
370:
371: tzset (); /* may be required in order */
372: /* to guarantee _timezone set */
373: #else
374:
375: clock = time (0L);
376: lt = *localtime (&clock);
377: gt = *gmtime (&clock);
378:
379: /* This is awkward but I think it is portable: steve_morris */
380: gmt = gt.tm_year * 365;
381: gmt = (gmt + gt.tm_yday) * 24;
382: gmt = (gmt + gt.tm_hour) * 60;
383: gmt = (gmt + gt.tm_min);
384:
385: lmt = lt.tm_year * 365;
386: lmt = (lmt + lt.tm_yday) * 24;
387: lmt = (lmt + lt.tm_hour) * 60;
388: lmt = (lmt + lt.tm_min);
389:
390: FreeM_timezone = (gmt - lmt) * 60;
391: tzoffset = -FreeM_timezone;
392:
393: #endif /* __CYGWIN__ */
394:
395:
396: }
397:
398: void init_freem_path (void)
399: {
400:
401: if((freem_path = malloc(PATH_MAX + 1)) == NULL) {
402: fprintf(stderr, "Can't allocate freem_path. Exiting.");
403:
404: exit(1);
405: }
406:
407: freem_path[0] = NUL;
408:
409: /* check where I'm being executed from */
410: #ifdef __linux__
411: readlink ("/proc/self/exe", freem_path, PATH_MAX);
412: #endif
413: #ifdef __FreeBSD__
414: readlink ("/proc/curproc/file", freem_path, PATH_MAX);
415: #endif
416: #ifdef __sun
417: readlink ("/proc/self/path/a.out", freem_path, PATH_MAX);
418: #endif
419:
420: if(freem_path[0] == NUL) {
421: /* we don't know where we came from */
422: }
423:
424: getcwd (curdir, PATHLEN);
425: stcnv_c2m (curdir);
426:
427: }
428:
429: #if defined(HAVE_LIBREADLINE)
430: void init_readline (void)
431: {
432: uid_t uid = geteuid ();
433: struct passwd *pw = getpwuid (uid);
434: char *pw_buf;
435:
436: pw_buf = (char *) calloc (strlen(pw->pw_dir) + 1, sizeof(char));
437: strcpy (pw_buf, pw->pw_dir);
438:
439: snprintf (history_file, 256, "%s/.freem_history", pw_buf);
440:
441: free (pw_buf);
442:
443: using_history ();
444: read_history (history_file);
445: }
446: #endif
447:
448: void init_execution_context (void)
449: {
450: register int i;
451:
452: obj_init ();
453:
454: merr_clear ();
455:
456: codptr = code;
457: code[0] = EOL; /* init code_pointer */
458: partition = calloc ((unsigned) (PSIZE + 2), 1);
459:
460: if (partition == NULL) exit (2); /* could not allocate stuff... */
461:
462: for (i = 0; i < MAXNO_OF_RBUF; i++) {
463: rbuf_flags[i].standard = standard;
464: }
465:
466: for (i = 0; i < NESTLEVLS; i++) {
467: extr_types[i] = DT_STRING;
468: }
469:
470: symlen = PSIZE;
471: s = &partition[PSIZE] - 256; /* pointer to symlen_offset */
472: argptr = partition; /* pointer to beg of tmp-storage */
473:
474: svntable = calloc ((unsigned) (UDFSVSIZ + 1), 1);
475: if (svntable == NULL) exit (2); /* could not allocate stuff... */
476:
477: svnlen = UDFSVSIZ; /* begin of udf_svn_table */
478: buff = calloc ((unsigned) NO_OF_RBUF * (unsigned) PSIZE0, 1); /* routine buffer pool */
479: if (buff == NULL) exit (2); /* could not allocate stuff... */
480:
481:
482: newstack = calloc ((unsigned) NSIZE, 1);
483: if (newstack == NULL) exit (2); /* could not allocate stuff... */
484:
485: #ifdef DEBUG_NEWPTR
486: printf("Allocating newptr stack...\r\n");
487: #endif
488:
489: newptr = newstack;
490: newlimit = newstack + NSIZE - 1024;
491:
492:
493: namstck = calloc ((unsigned) NESTLEVLS * 13, 1);
494: if (namstck == NULL) exit (2); /* could not allocate stuff... */
495:
496: *namstck = EOL;
497: *(namstck + 1) = EOL;
498: namptr = namstck; /* routine name stack pointer */
499: framstck = calloc ((unsigned) NESTLEVLS * 256, 1);
500: if (framstck == NULL) exit (2); /* could not allocate stuff... */
501:
502: *framstck = EOL;
503: *(framstck + 1) = EOL;
504: dofrmptr = framstck; /* DO_frame stack pointer */
505: cmdstack = calloc ((unsigned) NESTLEVLS * 256, 1);
506: if (cmdstack == NULL) exit (2); /* could not allocate stuff... */
507:
508: cmdptr = cmdstack; /* command stack */
509:
510: rouend = rouins = rouptr = buff;
511: roucur = buff + (NO_OF_RBUF * PSIZE0 + 1);
512: *rouptr = EOL;
513: *(rouptr + 1) = EOL;
514: *(rouptr + 2) = EOL;
515:
516: err_suppl[0] = EOL; /* empty out supplemental error info */
517: }
518:
519: void init_estack (void)
520: {
521: stcpy (merr_stack[0].PLACE, "xecline()\201");
522: }
523:
524: #if defined(HAVE_MWAPI_MOTIF)
525: void init_mwapi (void)
526: {
527: /*
528: if (getenv("DISPLAY") != NULL) {
529: gtk_init (0, NULL);
530: }
531: */
532: //TODO: init Motif/libXt
533: }
534: #else
535: void init_mwapi (void)
536: {
537: return;
538: }
539: #endif
540:
541: void init_io (void)
542: {
543: register int i;
544:
545: /* initialize screen */
546: setbuf (stdin, NULL); /* no input buffering */
547: glvnflag.all = 0L;
548: stcpy (buff, "\201");
549: writeHOME (buff);
550: sq_modes[0] = '+';
551: for (i = 0; i <= MAXDEV; ug_buf[i++][0] = EOL); /* init read-buffers */
552:
553: frm_crlf[HOME] = frm_filter;
554:
555: if (hardcopy) zbreakon = ENABLE; /* enable CTRL/B */
556:
557: set_io (MUMPS); /* set i/o parameters */
558:
559: #if !defined(__AMIGA)
560: if (ttyname (HOME)) { /* for $IO of HOME */
561: strcpy (dev[HOME], ttyname (HOME));
562: dev[HOME][strlen (dev[HOME])] = EOL;
563: }
564: else {
565: dev[HOME][0] = EOL; /* ...we are in a pipe */
566: }
567: #else
568: strcpy (dev[HOME], "CONSOLE:");
569: #endif
570:
571: /* init function keys */
572: for (i = 0; i < 44; zfunkey[i++][0] = EOL);
573: }
574:
575: void init_random_number (void)
576: {
577:
578: srand (time (NULL));
579:
580: if ((nrandom = time (0L) * getpid ()) < 0) {
581: nrandom = (-nrandom);
582: }
583:
584: }
585:
586: void init_ztrap (void)
587: {
588:
589: if (frm_filter) {
590: ztrap[0][0] = EOL; /* no default ztrap for filters */
591: }
592: else if (startuprou[0] == '^') {
593: stcpy (ztrap[0], startuprou);
594: }
595: else {
596: stcpy (ztrap[0], "^%SYSINIT\201");
597: }
598:
599: /* $ZT to be xecuted on startup */
600:
601: stcpy (ztrap[NESTLEVLS + 1], ztrap[0]); /* DSM V.2 error trapping */
602:
603: }
604:
605: void init_ssvn(void)
606: {
607: ssvn_job_update ();
608: ssvn_display_update ();
609: ssvn_routine_update ();
610: ssvn_library_update ();
611: if (first_process) ssvn_system_update ();
612: }
613:
614: void init_terminal(void)
615: {
616: xpos[HOME] = 80;
617: ypos[HOME] = 24;
618: }
619:
620: void reset_terminal(void)
621: {
622: struct termio tpara;
623:
624: ioctl (0, TCGETA, &tpara);
625:
626: tpara.c_lflag |= (ECHO | ICANON); /* enable echo/no cbreak mode */
627: tpara.c_iflag |= ICRNL; /* cr-lf mapping */
628: tpara.c_oflag |= ONLCR; /* cr-lf mapping */
629: tpara.c_cc[VMIN] = EOT;
630: tpara.c_cc[VTIME] = -1;
631:
632: ioctl (0, TCSETA, &tpara);
633: }
634:
635: void cleanup (void)
636: {
637: char k_buf[256];
638: int ch;
639:
640: /* remove this job's entry from ^$JOB SSVN */
641: snprintf (k_buf, 255, "^$JOB\202%d\201", pid);
642: symtab_shm (kill_sym, k_buf, " \201");
643:
644: reset_terminal ();
645:
646: if (tp_level > 0) {
647:
648: if (direct_mode == TRUE) {
649: fprintf (stderr, "UNCOMMITTED TRANSACTIONS EXIST:\n\n");
650: tp_tdump ();
651: set_io (UNIX);
652: fprintf (stderr, "\nWould you like to c)ommit or r)ollback the above transactions and their operations? ($TLEVEL = %d) ", tp_level);
653:
654: for (;;) {
655: ch = fgetc (stdin);
656:
657: if (ch == 'c' || ch == 'C') {
658: while (tp_level > 0) tp_tcommit ();
659:
660: fprintf (stderr, "\n\nTransactions have been committed.\n");
661:
662: break;
663: }
664: else if (ch == 'r' || ch == 'R') {
665: tp_trollback (tp_level);
666:
667: fprintf (stderr, "\n\nTransactions have been rolled back.\n");
668:
669: break;
670: }
671: else {
672: fprintf (stderr, "\n\nInvalid input '%c'. Must choose c)ommit or r)ollback.\n", ch);
673: }
674: }
675: }
676: else {
677: fprintf (stderr, "Uncommitted transactions exist. Rolling back.\n");
678: tp_trollback (tp_level);
679: }
680: }
681:
682: #if defined(HAVE_LIBREADLINE)
683: write_history (history_file);
684: #endif
685:
686: locktab_unlock_all ();
687: job_remove (pid);
688:
689: shm_exit ();
690:
691: if (run_daemon == TRUE) {
692:
693: if (pid_fd != -1) {
694: lockf (pid_fd, F_ULOCK, 0);
695: close (pid_fd);
696: }
697:
698: if (pid_file_path != NULL) {
699: unlink (pid_file_path);
700: }
701:
702: }
703:
704:
705:
706: free (buff); /* free previously allocated space */
707: free (svntable);
708: if (partition) free (partition);
709: if (apartition) free (apartition);
710:
711:
712: free (newstack);
713:
714:
715: if (v22size) free (v22ali);
716:
717: return;
718: } /* end of cleanup */
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