1: /*
2: ================================================================================
3: RPL/2 (R) version 4.0.16
4: Copyright (C) 1989-2010 Dr. BERTRAND Joël
5:
6: This file is part of RPL/2.
7:
8: RPL/2 is free software; you can redistribute it and/or modify it
9: under the terms of the CeCILL V2 License as published by the french
10: CEA, CNRS and INRIA.
11:
12: RPL/2 is distributed in the hope that it will be useful, but WITHOUT
13: ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14: FITNESS FOR A PARTICULAR PURPOSE. See the CeCILL V2 License
15: for more details.
16:
17: You should have received a copy of the CeCILL License
18: along with RPL/2. If not, write to info@cecill.info.
19: ================================================================================
20: */
21:
22:
23: #include "rpl.conv.h"
24: #include "tex.conv.h"
25:
26: #include <stdarg.h>
27:
28: #undef fprintf
29: #undef printf
30:
31:
32: /*
33: ================================================================================
34: Fonction de translitération
35: ================================================================================
36: Entrées :
37: --------------------------------------------------------------------------------
38: Sorties :
39: --------------------------------------------------------------------------------
40: Effets de bord : néant
41: ================================================================================
42: */
43:
44: unsigned char *
45: transliteration(struct_processus *s_etat_processus,
46: unsigned char *chaine_entree,
47: unsigned char *codage_entree,
48: unsigned char *codage_sortie)
49: {
50: unsigned char *codage_sortie_transliteral;
51: unsigned char *tampon;
52:
53: if ((codage_sortie_transliteral = malloc((strlen(codage_sortie)
54: + strlen("//TRANSLIT") + 1) * sizeof(unsigned char))) == NULL)
55: {
56: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
57: return(NULL);
58: }
59:
60: sprintf(codage_sortie_transliteral, "%s//TRANSLIT", codage_sortie);
61:
62: tampon = reencodage(s_etat_processus, chaine_entree,
63: codage_entree, codage_sortie_transliteral);
64: free(codage_sortie_transliteral);
65:
66: return(tampon);
67: }
68:
69:
70: unsigned char *
71: reencodage(struct_processus *s_etat_processus,
72: unsigned char *chaine_entree,
73: unsigned char *codage_entree,
74: unsigned char *codage_sortie)
75: {
76: # define d_LONGUEUR 1024
77:
78: iconv_t transcodage;
79:
80: size_t ios;
81: size_t longueur_entree;
82: size_t longueur_sortie;
83:
84: unsigned char *buffer_entree;
85: unsigned char *buffer_sortie;
86: unsigned char *chaine_sortie;
87: unsigned char *pointeur;
88: unsigned char *tampon;
89:
90: if ((transcodage = iconv_open(codage_sortie, codage_entree)) ==
91: (iconv_t) -1)
92: {
93: (*s_etat_processus).erreur_execution = d_ex_erreur_transcodage;
94: return(NULL);
95: }
96:
97: buffer_entree = chaine_entree;
98: longueur_entree = strlen(chaine_entree);
99:
100: if ((chaine_sortie = malloc(sizeof(unsigned char))) == NULL)
101: {
102: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
103: return(NULL);
104: }
105:
106: chaine_sortie[0] = d_code_fin_chaine;
107:
108: if ((buffer_sortie = malloc((d_LONGUEUR + 1) * sizeof(char))) == NULL)
109: {
110: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
111: return(NULL);
112: }
113:
114: do
115: {
116: longueur_sortie = d_LONGUEUR;
117: pointeur = buffer_sortie;
118:
119: if ((ios = iconv(transcodage, (char **) &buffer_entree,
120: &longueur_entree, (char **) &pointeur, &longueur_sortie))
121: == (size_t) -1)
122: {
123: // On autorise les erreurs EINVAL et EILSEQ
124: if (errno == EILSEQ)
125: {
126: free(buffer_sortie);
127: free(chaine_sortie);
128:
129: (*s_etat_processus).erreur_execution = d_ex_erreur_transcodage;
130: return(NULL);
131: }
132: }
133:
134: tampon = (unsigned char *) chaine_sortie;
135: (*pointeur) = d_code_fin_chaine;
136:
137: if ((chaine_sortie = malloc((strlen(tampon) + strlen(buffer_sortie) + 1)
138: * sizeof(unsigned char))) == NULL)
139: {
140: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
141: return(NULL);
142: }
143:
144: sprintf(chaine_sortie, "%s%s", tampon, buffer_sortie);
145: free(tampon);
146: } while((*buffer_entree) != d_code_fin_chaine);
147:
148: free(buffer_sortie);
149: iconv_close(transcodage);
150:
151: return(chaine_sortie);
152: }
153:
154:
155: /*
156: ================================================================================
157: Fonctions spécifiques
158: ================================================================================
159: Entrées :
160: --------------------------------------------------------------------------------
161: Sorties :
162: --------------------------------------------------------------------------------
163: Effets de bord : néant
164: ================================================================================
165: */
166:
167: void
168: localisation_courante(struct_processus *s_etat_processus)
169: {
170: char **arguments;
171:
172: int ios;
173: int pipes_entree[2];
174: int pipes_erreur[2];
175: int pipes_sortie[2];
176: int status;
177:
178: logical1 drapeau_fin;
179:
180: long i;
181: long nombre_arguments;
182:
183: pid_t pid;
184:
185: sigset_t oldset;
186: sigset_t set;
187:
188: struct sigaction action_passee;
189:
190: unsigned char *tampon;
191:
192: unsigned long longueur_lecture;
193: unsigned long nombre_iterations;
194: unsigned long pointeur;
195:
196: if ((arguments = malloc(3 * sizeof(char **))) == NULL)
197: {
198: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
199: return;
200: }
201:
202: if ((arguments[0] = malloc((strlen("locale") + 1) * sizeof(char))) == NULL)
203: {
204: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
205: return;
206: }
207:
208: if ((arguments[1] = malloc((strlen("charmap") + 1) * sizeof(char))) == NULL)
209: {
210: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
211: return;
212: }
213:
214: strcpy(arguments[0], "locale");
215: strcpy(arguments[1], "charmap");
216: arguments[2] = NULL;
217:
218: nombre_arguments = 2;
219: drapeau_fin = d_faux;
220:
221: if (pipe(pipes_entree) != 0)
222: {
223: (*s_etat_processus).erreur_systeme = d_es_processus;
224: return;
225: }
226:
227: if (pipe(pipes_sortie) != 0)
228: {
229: (*s_etat_processus).erreur_systeme = d_es_processus;
230: return;
231: }
232:
233: if (pipe(pipes_erreur) != 0)
234: {
235: (*s_etat_processus).erreur_systeme = d_es_processus;
236: return;
237: }
238:
239: sigfillset(&set);
240: pthread_sigmask(SIG_BLOCK, &set, &oldset);
241:
242: verrouillage_threads_concurrents(s_etat_processus);
243: pid = fork();
244: deverrouillage_threads_concurrents(s_etat_processus);
245:
246: pthread_sigmask(SIG_SETMASK, &oldset, NULL);
247: sigpending(&set);
248:
249: if (pid < 0)
250: {
251: if (close(pipes_entree[0]) != 0)
252: {
253: (*s_etat_processus).erreur_systeme = d_es_processus;
254: return;
255: }
256:
257: if (close(pipes_entree[1]) != 0)
258: {
259: (*s_etat_processus).erreur_systeme = d_es_processus;
260: return;
261: }
262:
263: if (close(pipes_sortie[0]) != 0)
264: {
265: (*s_etat_processus).erreur_systeme = d_es_processus;
266: return;
267: }
268:
269: if (close(pipes_sortie[1]) != 0)
270: {
271: (*s_etat_processus).erreur_systeme = d_es_processus;
272: return;
273: }
274:
275: if (close(pipes_erreur[0]) != 0)
276: {
277: (*s_etat_processus).erreur_systeme = d_es_processus;
278: return;
279: }
280:
281: if (close(pipes_erreur[1]) != 0)
282: {
283: (*s_etat_processus).erreur_systeme = d_es_processus;
284: return;
285: }
286:
287: (*s_etat_processus).erreur_systeme = d_es_processus;
288: return;
289: }
290: else if (pid == 0)
291: {
292: if (close(pipes_entree[1]) != 0)
293: {
294: (*s_etat_processus).erreur_systeme = d_es_processus;
295: return;
296: }
297:
298: if (close(pipes_sortie[0]) != 0)
299: {
300: (*s_etat_processus).erreur_systeme = d_es_processus;
301: return;
302: }
303:
304: if (close(pipes_erreur[0]) != 0)
305: {
306: (*s_etat_processus).erreur_systeme = d_es_processus;
307: return;
308: }
309:
310: if (pipes_entree[0] != STDIN_FILENO)
311: {
312: if (dup2(pipes_entree[0], STDIN_FILENO) == -1)
313: {
314: (*s_etat_processus).erreur_systeme = d_es_processus;
315: return;
316: }
317: }
318:
319: if (pipes_sortie[1] != STDOUT_FILENO)
320: {
321: if (dup2(pipes_sortie[1], STDOUT_FILENO) == -1)
322: {
323: (*s_etat_processus).erreur_systeme = d_es_processus;
324: return;
325: }
326: }
327:
328: if (pipes_sortie[1] != STDERR_FILENO)
329: {
330: if (dup2(pipes_sortie[1], STDERR_FILENO) == -1)
331: {
332: (*s_etat_processus).erreur_systeme = d_es_processus;
333: return;
334: }
335: }
336:
337: if (nombre_arguments != 0)
338: {
339: execvp(arguments[0], arguments);
340: }
341: else
342: {
343: exit(EXIT_SUCCESS);
344: }
345:
346: /*
347: * L'appel système execvp() a généré une erreur et n'a pu exécuter
348: * argument[0] (fichier non exécutable ou inexistant).
349: */
350:
351: close(pipes_entree[0]);
352: close(pipes_sortie[1]);
353:
354: for(i = 0; i < nombre_arguments; i++)
355: {
356: free(arguments[i]);
357: }
358:
359: free(arguments);
360: (*s_etat_processus).erreur_systeme = d_es_processus;
361:
362: /*
363: * Envoi d'une erreur dans le pipe idoine. On ne regarde pas
364: * le nombre d'octets écrits car l'erreur ne pourra de toute
365: * façon pas être traitée.
366: */
367:
368: write_atomic(s_etat_processus, pipes_erreur[1], " ", 1);
369: close(pipes_erreur[1]);
370:
371: exit(EXIT_SUCCESS);
372: }
373: else
374: {
375: if (close(pipes_entree[0]) != 0)
376: {
377: (*s_etat_processus).erreur_systeme = d_es_processus;
378: return;
379: }
380:
381: if (close(pipes_sortie[1]) != 0)
382: {
383: (*s_etat_processus).erreur_systeme = d_es_processus;
384: return;
385: }
386:
387: if (close(pipes_erreur[1]) != 0)
388: {
389: (*s_etat_processus).erreur_systeme = d_es_processus;
390: return;
391: }
392:
393: if (close(pipes_entree[1]) != 0)
394: {
395: (*s_etat_processus).erreur_systeme = d_es_processus;
396: return;
397: }
398:
399: do
400: {
401: if (kill(pid, 0) != 0)
402: {
403: break;
404: }
405:
406: /*
407: * Récupération de la valeur de retour du processus détaché
408: */
409:
410: # ifndef SEMAPHORES_NOMMES
411: if (sem_post(&((*s_etat_processus).semaphore_fork)) != 0)
412: # else
413: if (sem_post((*s_etat_processus).semaphore_fork) != 0)
414: # endif
415: {
416: (*s_etat_processus).erreur_systeme = d_es_processus;
417: return;
418: }
419:
420: if (waitpid(pid, &status, 0) == -1)
421: {
422: # ifndef SEMAPHORES_NOMMES
423: if (sem_wait(&((*s_etat_processus).semaphore_fork)) == -1)
424: # else
425: if (sem_wait((*s_etat_processus).semaphore_fork) == -1)
426: # endif
427: {
428: if (errno != EINTR)
429: {
430: (*s_etat_processus).erreur_systeme = d_es_processus;
431: return;
432: }
433: }
434:
435: (*s_etat_processus).erreur_systeme = d_es_processus;
436: return;
437: }
438:
439: # ifndef SEMAPHORES_NOMMES
440: if (sem_wait(&((*s_etat_processus).semaphore_fork)) == -1)
441: # else
442: if (sem_wait((*s_etat_processus).semaphore_fork) == -1)
443: # endif
444: {
445: if (errno != EINTR)
446: {
447: (*s_etat_processus).erreur_systeme = d_es_processus;
448: return;
449: }
450: }
451: } while((!WIFEXITED(status)) && (!WIFSIGNALED(status)));
452:
453: longueur_lecture = 256;
454: pointeur = 0;
455: nombre_iterations = 1;
456:
457: if ((tampon = malloc((longueur_lecture + 1) *
458: sizeof(unsigned char))) == NULL)
459: {
460: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
461: return;
462: }
463:
464: # ifndef SEMAPHORES_NOMMES
465: if (sem_post(&((*s_etat_processus).semaphore_fork)) != 0)
466: # else
467: if (sem_post((*s_etat_processus).semaphore_fork) != 0)
468: # endif
469: {
470: (*s_etat_processus).erreur_systeme = d_es_processus;
471: return;
472: }
473:
474: while((ios = read_atomic(s_etat_processus,
475: pipes_sortie[0], &(tampon[pointeur]),
476: longueur_lecture)) > 0)
477: {
478: # ifndef SEMAPHORES_NOMMES
479: while(sem_wait(&((*s_etat_processus).semaphore_fork)) == -1)
480: # else
481: while(sem_wait((*s_etat_processus).semaphore_fork) == -1)
482: # endif
483: {
484: if (errno != EINTR)
485: {
486: (*s_etat_processus).erreur_systeme = d_es_processus;
487: return;
488: }
489: }
490:
491: tampon[pointeur + ios] = d_code_fin_chaine;
492: pointeur += longueur_lecture;
493: nombre_iterations++;
494:
495: if ((tampon = realloc(tampon,
496: ((nombre_iterations * longueur_lecture) + 1) *
497: sizeof(unsigned char))) == NULL)
498: {
499: (*s_etat_processus).erreur_systeme =
500: d_es_allocation_memoire;
501: return;
502: }
503:
504: # ifndef SEMAPHORES_NOMMES
505: if (sem_post(&((*s_etat_processus).semaphore_fork)) != 0)
506: # else
507: if (sem_post((*s_etat_processus).semaphore_fork) != 0)
508: # endif
509: {
510: (*s_etat_processus).erreur_systeme = d_es_processus;
511: return;
512: }
513: }
514:
515: # ifndef SEMAPHORES_NOMMES
516: while(sem_wait(&((*s_etat_processus).semaphore_fork)) == -1)
517: # else
518: while(sem_wait((*s_etat_processus).semaphore_fork) == -1)
519: # endif
520: {
521: if (errno != EINTR)
522: {
523: (*s_etat_processus).erreur_systeme = d_es_processus;
524: return;
525: }
526: }
527:
528: if (strlen(tampon) == 0)
529: {
530: (*s_etat_processus).erreur_systeme = d_es_processus;
531: return;
532: }
533:
534: tampon[strlen(tampon) - 1] = d_code_fin_chaine;
535:
536: if (ios == -1)
537: {
538: (*s_etat_processus).erreur_systeme = d_es_processus;
539: return;
540: }
541:
542: if (close(pipes_sortie[0]) != 0)
543: {
544: (*s_etat_processus).erreur_systeme = d_es_processus;
545: return;
546: }
547:
548: (*s_etat_processus).localisation = tampon;
549:
550: if (sigaction(SIGINT, &action_passee, NULL) != 0)
551: {
552: for(i = 0; i < nombre_arguments; i++)
553: {
554: free(arguments[i]);
555: }
556:
557: free(arguments);
558: (*s_etat_processus).erreur_systeme = d_es_signal;
559: return;
560: }
561:
562: for(i = 0; i < nombre_arguments; i++)
563: {
564: free(arguments[i]);
565: }
566:
567: free(arguments);
568:
569: # ifndef SEMAPHORES_NOMMES
570: if (sem_post(&((*s_etat_processus).semaphore_fork)) != 0)
571: # else
572: if (sem_post((*s_etat_processus).semaphore_fork) != 0)
573: # endif
574: {
575: (*s_etat_processus).erreur_systeme = d_es_processus;
576: return;
577: }
578:
579: if (read_atomic(s_etat_processus, pipes_erreur[0], tampon, 1) > 0)
580: {
581: // Le processus fils renvoie une erreur.
582:
583: # ifndef SEMAPHORES_NOMMES
584: while(sem_wait(&((*s_etat_processus).semaphore_fork)) == -1)
585: # else
586: while(sem_wait((*s_etat_processus).semaphore_fork) == -1)
587: # endif
588: {
589: if (errno != EINTR)
590: {
591: (*s_etat_processus).erreur_systeme = d_es_processus;
592: return;
593: }
594: }
595:
596: (*s_etat_processus).erreur_execution = d_ex_erreur_processus;
597: return;
598: }
599:
600: # ifndef SEMAPHORES_NOMMES
601: while(sem_wait(&((*s_etat_processus).semaphore_fork)) == -1)
602: # else
603: while(sem_wait((*s_etat_processus).semaphore_fork) == -1)
604: # endif
605: {
606: if (errno != EINTR)
607: {
608: (*s_etat_processus).erreur_systeme = d_es_processus;
609: return;
610: }
611: }
612:
613: if (close(pipes_erreur[0]) != 0)
614: {
615: (*s_etat_processus).erreur_systeme = d_es_processus;
616: return;
617: }
618: }
619:
620: return;
621: }
622:
623:
624: int
625: transliterated_fprintf(struct_processus *s_etat_processus, file *flux,
626: const char *format, ...)
627: {
628: int ios;
629:
630: unsigned char *tampon;
631: unsigned char *tampon2;
632:
633: va_list arguments;
634:
635: va_start(arguments, format);
636:
637: if (valsprintf(&tampon, format, arguments) < 0)
638: {
639: va_end(arguments);
640:
641: if (s_etat_processus != NULL)
642: {
643: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
644: }
645:
646: return(-1);
647: }
648:
649: va_end(arguments);
650:
651: if (s_etat_processus != NULL)
652: {
653: if ((tampon2 = transliteration(s_etat_processus, tampon,
654: d_locale, (*s_etat_processus).localisation)) == NULL)
655: {
656: free(tampon);
657: return(-1);
658: }
659:
660: free(tampon);
661: }
662: else
663: {
664: tampon2 = tampon;
665: }
666:
667: # ifdef SunOS
668: while((ios = fprintf(flux, "%s", tampon2)) < 0)
669: {
670: if ((errno != EINTR) && (errno != 0))
671: {
672: break;
673: }
674: }
675: # else
676: ios = fprintf(flux, "%s", tampon2);
677: # endif
678:
679: free(tampon2);
680:
681: return(ios);
682: }
683:
684:
685: int
686: tex_fprintf(struct_processus *s_etat_processus,
687: file *flux, const char *format, ...)
688: {
689: int ios;
690:
691: unsigned char *tampon;
692: unsigned char *tampon2;
693:
694: va_list arguments;
695:
696: va_start(arguments, format);
697:
698: if (valsprintf(&tampon, format, arguments) < 0)
699: {
700: va_end(arguments);
701:
702: if (s_etat_processus != NULL)
703: {
704: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
705: }
706:
707: return(-1);
708: }
709:
710: va_end(arguments);
711:
712: if ((tampon2 = transliteration(s_etat_processus, tampon,
713: d_locale, ds_tex_encodage_3)) == NULL)
714: {
715: free(tampon);
716: return(-1);
717: }
718:
719: free(tampon);
720:
721: # ifdef SunOS
722: while((ios = fprintf(flux, "%s", tampon2)) < 0)
723: {
724: if ((errno != EINTR) && (errno != 0))
725: {
726: break;
727: }
728: }
729: # else
730: ios = fprintf(flux, "%s", tampon2);
731: # endif
732:
733: free(tampon2);
734:
735: return(ios);
736: }
737:
738: #define fprintf NULL
739: #define printf NULL
740:
741: // vim: ts=4
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