1: /*
2: ================================================================================
3: RPL/2 (R) version 4.0.13
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: if (sem_post(&((*s_etat_processus).semaphore_fork))
411: != 0)
412: {
413: (*s_etat_processus).erreur_systeme = d_es_processus;
414: return;
415: }
416:
417: if (waitpid(pid, &status, 0) == -1)
418: {
419: if (sem_wait(&((*s_etat_processus).semaphore_fork)) == -1)
420: {
421: if (errno != EINTR)
422: {
423: (*s_etat_processus).erreur_systeme = d_es_processus;
424: return;
425: }
426: }
427:
428: (*s_etat_processus).erreur_systeme = d_es_processus;
429: return;
430: }
431:
432: if (sem_wait(&((*s_etat_processus).semaphore_fork)) == -1)
433: {
434: if (errno != EINTR)
435: {
436: (*s_etat_processus).erreur_systeme = d_es_processus;
437: return;
438: }
439: }
440: } while((!WIFEXITED(status)) && (!WIFSIGNALED(status)));
441:
442: longueur_lecture = 256;
443: pointeur = 0;
444: nombre_iterations = 1;
445:
446: if ((tampon = malloc((longueur_lecture + 1) *
447: sizeof(unsigned char))) == NULL)
448: {
449: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
450: return;
451: }
452:
453: if (sem_post(&((*s_etat_processus).semaphore_fork)) != 0)
454: {
455: (*s_etat_processus).erreur_systeme = d_es_processus;
456: return;
457: }
458:
459: while((ios = read_atomic(s_etat_processus,
460: pipes_sortie[0], &(tampon[pointeur]),
461: longueur_lecture)) > 0)
462: {
463: while(sem_wait(&((*s_etat_processus).semaphore_fork)) == -1)
464: {
465: if (errno != EINTR)
466: {
467: (*s_etat_processus).erreur_systeme = d_es_processus;
468: return;
469: }
470: }
471:
472: tampon[pointeur + ios] = d_code_fin_chaine;
473: pointeur += longueur_lecture;
474: nombre_iterations++;
475:
476: if ((tampon = realloc(tampon,
477: ((nombre_iterations * longueur_lecture) + 1) *
478: sizeof(unsigned char))) == NULL)
479: {
480: (*s_etat_processus).erreur_systeme =
481: d_es_allocation_memoire;
482: return;
483: }
484:
485: if (sem_post(&((*s_etat_processus).semaphore_fork)) != 0)
486: {
487: (*s_etat_processus).erreur_systeme = d_es_processus;
488: return;
489: }
490: }
491:
492: while(sem_wait(&((*s_etat_processus).semaphore_fork)) == -1)
493: {
494: if (errno != EINTR)
495: {
496: (*s_etat_processus).erreur_systeme = d_es_processus;
497: return;
498: }
499: }
500:
501: if (strlen(tampon) == 0)
502: {
503: (*s_etat_processus).erreur_systeme = d_es_processus;
504: return;
505: }
506:
507: tampon[strlen(tampon) - 1] = d_code_fin_chaine;
508:
509: if (ios == -1)
510: {
511: (*s_etat_processus).erreur_systeme = d_es_processus;
512: return;
513: }
514:
515: if (close(pipes_sortie[0]) != 0)
516: {
517: (*s_etat_processus).erreur_systeme = d_es_processus;
518: return;
519: }
520:
521: (*s_etat_processus).localisation = tampon;
522:
523: if (sigaction(SIGINT, &action_passee, NULL) != 0)
524: {
525: for(i = 0; i < nombre_arguments; i++)
526: {
527: free(arguments[i]);
528: }
529:
530: free(arguments);
531: (*s_etat_processus).erreur_systeme = d_es_signal;
532: return;
533: }
534:
535: for(i = 0; i < nombre_arguments; i++)
536: {
537: free(arguments[i]);
538: }
539:
540: free(arguments);
541:
542: if (sem_post(&((*s_etat_processus).semaphore_fork)) != 0)
543: {
544: (*s_etat_processus).erreur_systeme = d_es_processus;
545: return;
546: }
547:
548: if (read_atomic(s_etat_processus, pipes_erreur[0], tampon, 1) > 0)
549: {
550: // Le processus fils renvoie une erreur.
551:
552: while(sem_wait(&((*s_etat_processus).semaphore_fork)) == -1)
553: {
554: if (errno != EINTR)
555: {
556: (*s_etat_processus).erreur_systeme = d_es_processus;
557: return;
558: }
559: }
560:
561: (*s_etat_processus).erreur_execution = d_ex_erreur_processus;
562: return;
563: }
564:
565: while(sem_wait(&((*s_etat_processus).semaphore_fork)) == -1)
566: {
567: if (errno != EINTR)
568: {
569: (*s_etat_processus).erreur_systeme = d_es_processus;
570: return;
571: }
572: }
573:
574: if (close(pipes_erreur[0]) != 0)
575: {
576: (*s_etat_processus).erreur_systeme = d_es_processus;
577: return;
578: }
579: }
580:
581: return;
582: }
583:
584:
585: int
586: transliterated_fprintf(struct_processus *s_etat_processus, file *flux,
587: const char *format, ...)
588: {
589: int ios;
590:
591: unsigned char *tampon;
592: unsigned char *tampon2;
593:
594: va_list arguments;
595:
596: va_start(arguments, format);
597:
598: if (valsprintf(&tampon, format, arguments) < 0)
599: {
600: va_end(arguments);
601:
602: if (s_etat_processus != NULL)
603: {
604: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
605: }
606:
607: return(-1);
608: }
609:
610: va_end(arguments);
611:
612: if (s_etat_processus != NULL)
613: {
614: if ((tampon2 = transliteration(s_etat_processus, tampon,
615: d_locale, (*s_etat_processus).localisation)) == NULL)
616: {
617: free(tampon);
618: return(-1);
619: }
620:
621: free(tampon);
622: }
623: else
624: {
625: tampon2 = tampon;
626: }
627:
628: # ifdef SunOS
629: while((ios = fprintf(flux, "%s", tampon2)) < 0)
630: {
631: if ((errno != EINTR) && (errno != 0))
632: {
633: break;
634: }
635: }
636: # else
637: ios = fprintf(flux, "%s", tampon2);
638: # endif
639:
640: free(tampon2);
641:
642: return(ios);
643: }
644:
645:
646: int
647: tex_fprintf(struct_processus *s_etat_processus,
648: file *flux, const char *format, ...)
649: {
650: int ios;
651:
652: unsigned char *tampon;
653: unsigned char *tampon2;
654:
655: va_list arguments;
656:
657: va_start(arguments, format);
658:
659: if (valsprintf(&tampon, format, arguments) < 0)
660: {
661: va_end(arguments);
662:
663: if (s_etat_processus != NULL)
664: {
665: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
666: }
667:
668: return(-1);
669: }
670:
671: va_end(arguments);
672:
673: if ((tampon2 = transliteration(s_etat_processus, tampon,
674: d_locale, ds_tex_encodage_3)) == NULL)
675: {
676: free(tampon);
677: return(-1);
678: }
679:
680: free(tampon);
681:
682: # ifdef SunOS
683: while((ios = fprintf(flux, "%s", tampon2)) < 0)
684: {
685: if ((errno != EINTR) && (errno != 0))
686: {
687: break;
688: }
689: }
690: # else
691: ios = fprintf(flux, "%s", tampon2);
692: # endif
693:
694: free(tampon2);
695:
696: return(ios);
697: }
698:
699: #define fprintf NULL
700: #define printf NULL
701:
702: // vim: ts=4
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