Commit | Line | Data |
---|---|---|
c906108c SS |
1 | /* |
2 | * Copyright (C) 1995 Advanced RISC Machines Limited. All rights reserved. | |
3 | * | |
4 | * This software may be freely used, copied, modified, and distributed | |
5 | * provided that the above copyright notice is preserved in all copies of the | |
6 | * software. | |
7 | */ | |
8 | ||
9 | /* | |
10 | * Host C Library support functions. | |
11 | * | |
12 | * $Revision$ | |
13 | * $Date$ | |
14 | */ | |
15 | ||
16 | #ifdef DEBUG | |
17 | # include <ctype.h> | |
18 | #endif | |
19 | ||
20 | #include <stdio.h> | |
21 | #include <stdlib.h> | |
22 | #include <string.h> | |
23 | #include <stdarg.h> | |
24 | #include <errno.h> | |
25 | #include <time.h> | |
26 | ||
27 | #include "adp.h" | |
28 | #include "host.h" | |
29 | #include "ardi.h" | |
30 | #include "buffers.h" | |
31 | #include "channels.h" /* Channel interface. */ | |
5c44784c | 32 | #include "angel_endian.h" |
c906108c SS |
33 | #include "logging.h" /* Angel support functions. */ |
34 | #include "msgbuild.h" | |
35 | #include "sys.h" | |
36 | #include "hsys.h" /* Function and structure declarations. */ | |
37 | #include "hostchan.h" | |
38 | ||
39 | #define FILEHANDLE int | |
40 | ||
41 | /* Note: no statics allowed. All globals must be malloc()ed on the heap. | |
42 | The state struct is used for this purpose. See 'hsys.h'. */ | |
43 | /* This is the message handler function passed to the channel manager in | |
44 | HostSysInit. It is called whenever a message is received. 'buffptr' | |
45 | points to the message body. Functionality is provided by the debugger | |
46 | toolkit. The routine is very loosely based on the HandleSWI routine from | |
47 | armos.c in the armulator source. */ | |
48 | /* These routines could be tested by providing a simple interface to armsd, | |
49 | and running them in that. */ | |
50 | ||
51 | ||
52 | /* taken staight from armulator source */ | |
53 | #ifdef __riscos | |
54 | extern int _fisatty(FILE *); | |
55 | # define isatty_(f) _fisatty(f) | |
56 | # define EMFILE -1 | |
57 | # define EBADF -1 | |
58 | int _kernel_escape_seen(void) { return 0 ;} | |
59 | #else | |
60 | # if defined(_WINDOWS) || defined(_CONSOLE) | |
61 | # define isatty_(f) (f == stdin || f == stdout) | |
62 | # else | |
63 | # ifdef __ZTC__ | |
64 | # include <io.h> | |
65 | # define isatty_(f) isatty((f)->_file) | |
66 | # else | |
67 | # ifdef macintosh | |
68 | # include <ioctl.h> | |
69 | # define isatty_(f) (~ioctl((f)->_file,FIOINTERACTIVE,NULL)) | |
70 | # else | |
71 | # define isatty_(f) isatty(fileno(f)) | |
72 | # endif | |
73 | # endif | |
74 | # endif | |
75 | #endif | |
76 | ||
77 | /* Set up the state block, filetable and register the C lib callback fn */ | |
78 | int HostSysInit(const struct Dbg_HostosInterface *hostif, char **cmdline, | |
79 | hsys_state **stateptr) | |
80 | { | |
81 | ChannelCallback HandleMessageFPtr = (ChannelCallback) HandleSysMessage; | |
82 | int i; | |
83 | *stateptr = (hsys_state *)malloc(sizeof(hsys_state)); | |
84 | ||
85 | if (*stateptr == NULL) return RDIError_OutOfStore; | |
86 | ||
87 | (*stateptr)->hostif=hostif; | |
88 | (*stateptr)->last_errno=0; | |
89 | (*stateptr)->OSptr=(OSblock *)malloc(sizeof(OSblock)); | |
90 | if ((*stateptr)->OSptr == NULL) return RDIError_OutOfStore; | |
91 | for (i=0; i<UNIQUETEMPS; i++) (*stateptr)->OSptr->TempNames[i]=NULL; | |
92 | for (i=0; i<HSYS_FOPEN_MAX; i++) { | |
93 | (*stateptr)->OSptr->FileTable[i]=NULL; | |
94 | (*stateptr)->OSptr->FileFlags[i]=0; | |
95 | } | |
96 | (*stateptr)->CommandLine=cmdline; | |
97 | ||
98 | return Adp_ChannelRegisterRead(CI_CLIB, (ChannelCallback)HandleMessageFPtr, | |
99 | *stateptr); | |
100 | } | |
101 | ||
102 | /* Shut down the Clib support, this will probably never get called though */ | |
103 | int HostSysExit(hsys_state *stateptr) | |
104 | { | |
105 | free(stateptr->OSptr); | |
106 | free(stateptr); | |
107 | return RDIError_NoError; | |
108 | } | |
109 | ||
110 | #ifdef DEBUG | |
111 | static void DebugCheckNullTermString(char *prefix, bool nl, | |
112 | unsigned int len, unsigned char *strp) | |
113 | { | |
114 | printf("%s: %d: ", prefix, len); | |
115 | if (strp[len]=='\0') | |
116 | printf("\"%s\"", strp); | |
117 | else | |
118 | printf("NOT NULL TERMINATED"); | |
119 | if (nl) | |
120 | printf("\n"); | |
121 | else | |
122 | { | |
123 | printf(" "); | |
124 | fflush(stdout); | |
125 | } | |
126 | } | |
127 | ||
608d5915 | 128 | #ifdef NEED_SYSERRLIST |
c906108c SS |
129 | extern int sys_nerr; |
130 | extern char *sys_errlist[]; | |
608d5915 | 131 | #endif |
c906108c SS |
132 | |
133 | static char *DebugStrError(int last_errno) | |
134 | { | |
135 | if (last_errno < sys_nerr) | |
136 | return sys_errlist[last_errno]; | |
137 | else | |
138 | return "NO MSG (errno>sys_nerr)"; | |
139 | } | |
140 | ||
141 | static void DebugCheckErr(char *prefix, bool nl, int err, int last_errno) | |
142 | { | |
143 | printf("\t%s: returned ", prefix); | |
144 | if (err == 0) | |
145 | printf("okay"); | |
146 | else | |
147 | printf("%d, errno = %d \"%s\"", err, last_errno, | |
148 | DebugStrError(last_errno)); | |
149 | if (nl) | |
150 | printf("\n"); | |
151 | else | |
152 | { | |
153 | printf(" "); | |
154 | fflush(stdout); | |
155 | } | |
156 | } | |
157 | ||
158 | static void DebugCheckNonNull(char *prefix, bool nl, | |
159 | void *handle, int last_errno) | |
160 | { | |
161 | printf("\t%s: returned ", prefix); | |
162 | if (handle != NULL) | |
163 | printf("okay [%08x]", (unsigned int)handle); | |
164 | else | |
165 | printf("NULL, errno = %d \"%s\"", last_errno, | |
166 | DebugStrError(last_errno)); | |
167 | if (nl) | |
168 | printf("\n"); | |
169 | else | |
170 | { | |
171 | printf(" "); | |
172 | fflush(stdout); | |
173 | } | |
174 | } | |
175 | ||
176 | #define DebugPrintF(c) printf c; | |
177 | ||
178 | #else | |
179 | ||
180 | #define DebugCheckNullTermString(p, n, l, s) ((void)(0)) | |
181 | #define DebugCheckErr(p, n, e, l) ((void)(0)) | |
182 | #define DebugCheckNonNull(p, n, h, l) ((void)(0)) | |
183 | #define DebugPrintF(c) ((void)(0)) | |
184 | ||
185 | #endif /* ifdef DEBUG ... else */ | |
186 | ||
187 | static FILE *hsysGetRealFileHandle(hsys_state *stateptr, int fh, char *flags) | |
188 | { | |
189 | FILE *file_p = NULL; | |
190 | ||
191 | if (fh < 0 || fh >= HSYS_FOPEN_MAX) | |
192 | { | |
193 | stateptr->last_errno = EBADF; | |
194 | DebugPrintF(("\tfh %d out-of-bounds!\n", fh)); | |
195 | return NULL; | |
196 | } | |
197 | else | |
198 | { | |
199 | file_p = stateptr->OSptr->FileTable[fh]; | |
200 | if (file_p != NULL) { | |
201 | if (flags != NULL) | |
202 | *flags = stateptr->OSptr->FileFlags[fh]; | |
203 | } | |
204 | else { | |
205 | stateptr->last_errno = EBADF; | |
206 | DebugPrintF(("\tFileTable[%d] is NULL\n", fh)); | |
207 | } | |
208 | ||
209 | return file_p; | |
210 | } | |
211 | } | |
212 | ||
213 | int HandleSysMessage(Packet *packet, hsys_state *stateptr) | |
214 | { | |
215 | unsigned int reason_code, mode, len, c, nbytes, nbtotal, nbtogo = 0; | |
216 | long posn, fl; | |
217 | char character; | |
218 | int err; | |
219 | ||
220 | /* Note: We must not free the buffer passed in as the callback handler */ | |
221 | /* expects to do this. Freeing any other buffers we have malloced */ | |
222 | /* ourselves is acceptable */ | |
223 | ||
224 | unsigned char *buffp = ((unsigned char *)BUFFERDATA(packet->pk_buffer))+16; | |
225 | /* buffp points to the parameters*/ | |
226 | /* the invidual messages, excluding*/ | |
227 | /* standard SYS fields (debugID, */ | |
228 | /* osinfo and reasoncode) */ | |
229 | unsigned char *buffhead = (unsigned char *)(packet->pk_buffer); | |
230 | ||
231 | int DebugID, OSInfo1, OSInfo2, count; | |
232 | ||
233 | const char* fmode[] = {"r","rb","r+","r+b", | |
234 | "w","wb","w+","w+b", | |
235 | "a","ab","a+","a+b", | |
236 | "r","r","r","r"} /* last 4 are illegal */ ; | |
237 | ||
238 | FILEHANDLE fh; /* fh is used as an index to the real file handle | |
239 | * in OSptr */ | |
240 | FILE *fhreal; | |
241 | unpack_message(BUFFERDATA(buffhead), "%w%w%w%w", &reason_code, | |
242 | &DebugID, &OSInfo1, &OSInfo2); | |
243 | /* Extract reason code from buffer. */ | |
244 | reason_code &= 0xFFFF; /* Strip away direction bit, OSInfo and */ | |
245 | /* DebugInfo fields. Will want to do some */ | |
246 | /* sort of validation on this later. */ | |
247 | ||
248 | switch(reason_code) | |
249 | { | |
250 | ||
251 | case CL_WriteC: /* Write a character to the terminal. */ | |
252 | /* byte data -> word status */ | |
253 | { | |
254 | #ifdef DEBUG | |
255 | int c = (int)(*buffp); | |
256 | printf("CL_WriteC: [%02x]>%c<", c, isprint(c) ? c : '.'); | |
257 | #endif | |
258 | stateptr->hostif->writec(stateptr->hostif->hostosarg, (int)(*buffp)); | |
259 | DevSW_FreePacket(packet); | |
260 | return msgsend(CI_CLIB,"%w%w%w%w%w", CL_WriteC|HtoT, | |
261 | DebugID, OSInfo1, OSInfo2, NoError); | |
262 | } | |
263 | ||
264 | case CL_Write0: /* Write a null terminated string to the terminal. */ | |
265 | { | |
266 | unpack_message(buffp, "%w", &len); | |
267 | DebugCheckNullTermString("CL_Write0", TRUE, len, buffp+4); | |
268 | stateptr->hostif->write(stateptr->hostif->hostosarg, | |
269 | (char *) buffp+4, len); | |
270 | DevSW_FreePacket(packet); | |
271 | return msgsend(CI_CLIB, "%w%w%w%w%w", CL_Write0|HtoT, DebugID, | |
272 | OSInfo1, OSInfo2, NoError); | |
273 | } | |
274 | ||
275 | case CL_ReadC: /* Read a byte from the terminal */ | |
276 | { | |
277 | DebugPrintF(("CL_ReadC: ")); | |
278 | DevSW_FreePacket(packet); | |
279 | ||
280 | character = stateptr->hostif->readc(stateptr->hostif->hostosarg); | |
281 | DebugPrintF(("\nCL_ReadC returning [%02x]>%c<\n", character, | |
282 | isprint(character) ? character : '.')); | |
283 | ||
284 | return msgsend(CI_CLIB, "%w%w%w%w%w%b", CL_ReadC|HtoT, | |
285 | DebugID, OSInfo1, OSInfo2, NoError, character); | |
286 | } | |
287 | ||
288 | case CL_System: /* Pass NULL terminated string to the hosts command | |
289 | * interpreter. As it is nULL terminated we dont need | |
290 | * the length | |
291 | */ | |
292 | { | |
293 | unpack_message(buffp, "%w", &len); | |
294 | DebugCheckNullTermString("CL_System", TRUE, len, buffp+4); | |
295 | ||
296 | err = system((char *)buffp+4); /* Use the string in the buffer */ | |
297 | stateptr->last_errno = errno; | |
298 | DebugCheckErr("system", TRUE, err, stateptr->last_errno); | |
299 | ||
300 | err = msgsend(CI_CLIB, "%w%w%w%w%w%w", CL_System|HtoT, | |
301 | DebugID, OSInfo1, OSInfo2, NoError, err); | |
302 | DevSW_FreePacket(packet); | |
303 | return err; | |
304 | } | |
305 | ||
306 | case CL_GetCmdLine: /* Returns the command line used to call the program */ | |
307 | { | |
308 | /* Note: we reuse the packet here, this may not always be desirable */ | |
309 | /* /* TODO: Use long buffers if possible */ | |
310 | DebugPrintF(("CL_GetCmdLine: \"%s\"\n", *(stateptr->CommandLine))); | |
311 | ||
312 | if (buffhead!=NULL) { | |
313 | len = strlen(*(stateptr->CommandLine)); | |
314 | if (len > Armsd_BufferSize-24) len = Armsd_BufferSize-24; | |
315 | packet->pk_length = len + msgbuild(BUFFERDATA(buffhead), | |
316 | "%w%w%w%w%w%w", CL_GetCmdLine|HtoT, | |
317 | DebugID, OSInfo1, OSInfo2, | |
318 | NoError, len); | |
319 | strncpy((char *) BUFFERDATA(buffhead)+24,*(stateptr->CommandLine), | |
320 | len); | |
321 | ||
322 | Adp_ChannelWrite(CI_CLIB, packet);/* Send message. */ | |
323 | return 0; | |
324 | } | |
325 | else return -1; | |
326 | } | |
327 | ||
328 | case CL_Clock: /* Return the number of centiseconds since the support */ | |
329 | /* code started executing */ | |
330 | { | |
331 | time_t retTime = time(NULL); | |
332 | if (retTime == (time_t)-1) | |
333 | stateptr->last_errno = errno; | |
334 | else | |
335 | retTime *=100; | |
336 | ||
337 | DebugPrintF(("CL_Clock: %lu\n", retTime)); | |
338 | DebugCheckErr("time", TRUE, (retTime == (time_t)-1), | |
339 | stateptr->last_errno); | |
340 | ||
341 | DevSW_FreePacket(packet); | |
342 | return msgsend(CI_CLIB, "%w%w%w%w%w%w",CL_Clock|HtoT, | |
343 | DebugID, OSInfo1, OSInfo2, NoError, retTime); | |
344 | } | |
345 | ||
346 | case CL_Time: /* return time, in seconds since the start of 1970 */ | |
347 | { | |
348 | time_t retTime = time(NULL); | |
349 | if (retTime == (time_t)-1) | |
350 | stateptr->last_errno = errno; | |
351 | ||
352 | DebugPrintF(("CL_Time: %lu\n", retTime)); | |
353 | DebugCheckErr("time", TRUE, (retTime == (time_t)-1), | |
354 | stateptr->last_errno); | |
355 | ||
356 | DevSW_FreePacket(packet); | |
357 | return msgsend(CI_CLIB,"%w%w%w%w%w%w",CL_Time|HtoT, | |
358 | DebugID, OSInfo1, OSInfo2, NoError, retTime); | |
359 | } | |
360 | ||
361 | case CL_Remove: /* delete named in the null terminated string */ | |
362 | { | |
363 | /* Removing an open file will cause problems but once again | |
364 | * its not our problem, likely result is a tangled FileTable */ | |
365 | /* As the filename is passed with a null terminator we can use it | |
366 | * straight out of the buffer without copying it.*/ | |
367 | ||
368 | unpack_message(buffp, "%w", &len); | |
369 | DebugCheckNullTermString("CL_Remove", TRUE, len, buffp+4); | |
370 | ||
371 | err=remove((char *)buffp+4); | |
372 | stateptr->last_errno = errno; | |
373 | DevSW_FreePacket(packet); | |
374 | DebugCheckErr("remove", TRUE, err, stateptr->last_errno); | |
375 | ||
376 | return msgsend(CI_CLIB, "%w%w%w%w%w", CL_Remove|HtoT, | |
377 | DebugID, OSInfo1, OSInfo2, err?-1:NoError); | |
378 | } | |
379 | ||
380 | case CL_Rename: /* rename file */ | |
381 | { | |
382 | /* Rename(word nbytes, bytes oname, word nbytes, bytes nname) | |
383 | * return(byte status) | |
384 | */ | |
385 | unsigned int len2; | |
386 | ||
387 | unpack_message(buffp, "%w", &len); | |
388 | DebugCheckNullTermString("CL_Rename", FALSE, len, buffp+4); | |
389 | unpack_message(buffp+5+len, "%w", &len2); | |
390 | DebugCheckNullTermString("to", TRUE, len2, buffp+9+len); | |
391 | ||
392 | /* Both names are passed with null terminators so we can use them | |
393 | * directly from the buffer. */ | |
394 | err = rename((char *)buffp+4, (char *)buffp+9+len); | |
395 | stateptr->last_errno = errno; | |
396 | DebugCheckErr("rename", TRUE, err, stateptr->last_errno); | |
397 | DevSW_FreePacket(packet); | |
398 | ||
399 | return msgsend(CI_CLIB, "%w%w%w%w%w", CL_Rename|HtoT, | |
400 | DebugID, OSInfo1, OSInfo2, (err==0)? NoError : -1); | |
401 | } | |
402 | ||
403 | case CL_Open: /* open the file */ | |
404 | { | |
405 | /* Open(word nbytes, bytes name, byte mode) | |
406 | * return(word handle) | |
407 | */ | |
408 | unpack_message(buffp, "%w", &len); | |
409 | /* get the open mode */ | |
410 | unpack_message((buffp)+4+len+1, "%w", &mode); | |
411 | DebugCheckNullTermString("CL_Open", FALSE, len, buffp+4); | |
412 | DebugPrintF(("mode: %d\n", mode)); | |
413 | ||
414 | /* do some checking on the file first? */ | |
415 | /* check if its a tty */ | |
416 | if (strcmp((char *)buffp+4, ":tt")==0 && (mode==0||mode==1)) { | |
417 | /* opening tty "r" */ | |
418 | fhreal = stdin; | |
419 | stateptr->last_errno = errno; | |
420 | DebugPrintF(("\tstdin ")); | |
421 | } | |
422 | else if (strcmp((char *)buffp+4, ":tt")== 0 && (mode==4||mode==5)) { | |
423 | /* opening tty "w" */ | |
424 | fhreal = stdout; | |
425 | stateptr->last_errno = errno; | |
426 | DebugPrintF(("\tstdout ")); | |
427 | } | |
428 | else | |
429 | { | |
430 | fhreal = fopen((char *)buffp+4, fmode[mode&0xFF]); | |
431 | stateptr->last_errno = errno; | |
432 | DebugCheckNonNull("fopen", FALSE, fhreal, stateptr->last_errno); | |
433 | } | |
434 | DevSW_FreePacket(packet); | |
435 | ||
436 | c = NONHANDLE; | |
437 | if (fhreal != NULL) { | |
438 | /* update filetable */ | |
439 | for (c=3; c < HSYS_FOPEN_MAX; c++) { | |
440 | /* allow for stdin, stdout, stderr (!!! WHY? MJG) */ | |
441 | if (stateptr->OSptr->FileTable[c] == NULL) { | |
442 | stateptr->OSptr->FileTable[c]= fhreal; | |
443 | stateptr->OSptr->FileFlags[c]= mode & 1; | |
444 | DebugPrintF(("fh: %d\n", c)); | |
445 | break; | |
446 | } | |
447 | else if (c == HSYS_FOPEN_MAX) { | |
448 | /* no filehandles free */ | |
449 | DebugPrintF(("no free fh: %d\n", c)); | |
450 | stateptr->last_errno = EMFILE; | |
451 | } | |
452 | } | |
453 | } | |
454 | else { | |
455 | /* c = NULL;*/ | |
456 | DebugPrintF(("error fh: %d\n", c)); | |
457 | } | |
458 | (void) msgsend(CI_CLIB, "%w%w%w%w%w", CL_Open|HtoT, | |
459 | DebugID, OSInfo1, OSInfo2, c); | |
460 | return 0; | |
461 | } | |
462 | ||
463 | case CL_Close: /* close the file pointed to by the filehandle */ | |
464 | { | |
465 | unpack_message(buffp, "%w", &fh); | |
466 | DebugPrintF(("CL_Close: fh %d\n", fh)); | |
467 | DevSW_FreePacket(packet); | |
468 | ||
469 | fhreal = hsysGetRealFileHandle(stateptr, fh, NULL); | |
470 | if (fhreal == NULL) | |
471 | err = -1; | |
472 | else { | |
473 | if (fhreal == stdin || fhreal == stdout || fhreal == stderr) { | |
474 | stateptr->last_errno = errno; | |
475 | DebugPrintF(("\tskipping close of std*\n")); | |
476 | err = 0; | |
477 | } | |
478 | else { | |
479 | err = fclose(fhreal); | |
480 | if (err == 0) | |
481 | stateptr->OSptr->FileTable[fh]=NULL; | |
482 | stateptr->last_errno = errno; | |
483 | DebugCheckErr("fclose", TRUE, err, stateptr->last_errno); | |
484 | } | |
485 | } | |
486 | return msgsend(CI_CLIB,"%w%w%w%w%w", CL_Close|HtoT, DebugID, | |
487 | OSInfo1, OSInfo2, err); | |
488 | } | |
489 | ||
490 | case CL_Write: | |
491 | { | |
492 | /* Write(word handle, word nbtotal, word nbytes, bytes data) | |
493 | * return(word nbytes) | |
494 | * WriteX(word nbytes, bytes data) | |
495 | * return(word nbytes) | |
496 | */ | |
497 | unsigned char *rwdata = NULL, *rwhead = NULL; | |
498 | unsigned char *write_source = NULL; | |
499 | char flags; | |
500 | FILE *fhreal; | |
501 | unsigned int ack_reason = CL_Write; /* first ack is for CL_Write */ | |
502 | ||
503 | err = -1; /* err == 0 is fwrite() error indication */ | |
504 | unpack_message(buffp, "%w%w%w", &fh, &nbtotal, &nbytes); | |
505 | DebugPrintF(("CL_Write: fh %d nbtotal %u nbytes %u\n", | |
506 | fh, nbtotal, nbytes)); | |
507 | ||
508 | fhreal = hsysGetRealFileHandle(stateptr, fh, &flags); | |
509 | nbtogo = nbtotal; | |
510 | ||
511 | /* deal with the file handle */ | |
512 | if (fhreal == NULL) | |
513 | err = 0; | |
514 | else { | |
515 | if (flags & READOP) | |
516 | fseek(fhreal,0,SEEK_CUR); | |
517 | stateptr->OSptr->FileFlags[fh] = (flags & BINARY) | WRITEOP; | |
518 | ||
519 | nbtogo -= nbytes; | |
520 | ||
521 | if (nbtogo > 0) { | |
522 | write_source = rwdata = rwhead = (unsigned char *)malloc(nbtotal); | |
523 | if (rwhead == NULL) { | |
524 | fprintf(stderr, "OUT OF MEMORY at line %d in %s\n", | |
525 | __LINE__, __FILE__); | |
526 | return -1; | |
527 | } | |
528 | memcpy(rwdata, buffp+12, nbytes); | |
529 | rwdata += nbytes; | |
530 | } | |
531 | else | |
532 | write_source = buffp+12; | |
533 | } | |
534 | ||
535 | do { | |
536 | /* at least once!! */ | |
537 | ||
538 | if (nbtogo == 0 && err != 0) { | |
539 | /* Do the actual write! */ | |
540 | if (fhreal == stdout || fhreal == stderr) { | |
541 | stateptr->hostif->write(stateptr->hostif->hostosarg, | |
542 | (char *)write_source, nbtotal); | |
543 | } | |
544 | else | |
545 | err = fwrite(write_source, 1, nbtotal, fhreal); | |
546 | stateptr->last_errno = errno; | |
547 | DebugCheckErr("fwrite", TRUE, (err == 0), stateptr->last_errno); | |
548 | } | |
549 | ||
550 | DevSW_FreePacket(packet); | |
551 | if (msgsend(CI_CLIB,"%w%w%w%w%w%w", ack_reason|HtoT, | |
552 | DebugID, OSInfo1, OSInfo2, (err == 0), nbtogo)) | |
553 | { | |
554 | fprintf(stderr, "COULD NOT REPLY at line %d in %s\n", | |
555 | __LINE__, __FILE__); | |
556 | if (rwhead != NULL) | |
557 | free(rwhead); | |
558 | return -1; | |
559 | } | |
560 | ||
561 | if (nbtogo == 0 || err == 0) { | |
562 | DebugPrintF(("\twrite complete - returning\n")); | |
563 | if (rwhead != NULL) | |
564 | free(rwhead); | |
565 | return 0; | |
566 | } | |
567 | else { | |
568 | /* await extension */ | |
569 | ack_reason = CL_WriteX; | |
570 | ||
571 | packet = DevSW_AllocatePacket(Armsd_BufferSize); | |
572 | if (packet == NULL) | |
573 | { | |
574 | fprintf(stderr, "COULD NOT ALLOC PACKET at line %d in %s\n", | |
575 | __LINE__, __FILE__); | |
576 | if (rwhead != NULL) | |
577 | free(rwhead); | |
578 | return -1; | |
579 | } | |
580 | Adp_ChannelRegisterRead(CI_CLIB, NULL, NULL); | |
581 | Adp_ChannelRead(CI_CLIB, &packet); | |
582 | Adp_ChannelRegisterRead(CI_CLIB, | |
583 | (ChannelCallback)HandleSysMessage, | |
584 | stateptr); | |
585 | ||
586 | buffhead = packet->pk_buffer; | |
587 | unpack_message(BUFFERDATA(buffhead), "%w%w%w%w%w", &reason_code, | |
588 | &DebugID, &OSInfo1, &OSInfo2, &nbytes); | |
589 | if (reason_code != (CL_WriteX|TtoH)) { | |
590 | DevSW_FreePacket(packet); | |
591 | free(rwhead); | |
592 | fprintf(stderr, "EXPECTING CL_WriteX GOT %u at line %d in %s\n", | |
593 | reason_code, __LINE__, __FILE__); | |
594 | return -1; | |
595 | } | |
596 | ||
597 | DebugPrintF(("CL_WriteX: nbytes %u\n", nbytes)); | |
598 | memcpy(rwdata, BUFFERDATA(buffhead)+20, nbytes); | |
599 | rwdata += nbytes; | |
600 | nbtogo -= nbytes; | |
601 | } | |
602 | ||
603 | } while (TRUE); /* will return when done */ | |
604 | } | |
605 | ||
606 | case CL_WriteX: /* | |
607 | * NOTE: if we've got here something has gone wrong | |
608 | * CL_WriteX's should all be picked up within the | |
609 | * CL_Write loop, probably best to return an error here | |
610 | * do this for the moment just so we do actually return | |
611 | */ | |
612 | fprintf(stderr, "ERROR: unexpected CL_WriteX message received\n"); | |
613 | return -1; | |
614 | ||
615 | case CL_Read: | |
616 | { | |
617 | /* Read(word handle, word nbtotal) | |
618 | * return(word nbytes, word nbmore, bytes data) | |
619 | */ | |
620 | /* ReadX() | |
621 | * return(word nbytes, word nbmore, bytes data) */ | |
622 | unsigned char *rwdata, *rwhead; | |
623 | int gotlen; | |
624 | unsigned int max_data_in_buffer=Armsd_BufferSize-28; | |
625 | char flags; | |
626 | FILE *fhreal; | |
627 | unsigned int nbleft = 0, reason = CL_Read; | |
628 | ||
629 | err = NoError; | |
630 | ||
631 | unpack_message(buffp, "%w%w", &fh, &nbtotal); | |
632 | DebugPrintF(("CL_Read: fh %d, nbtotal %d: ", fh, nbtotal)); | |
633 | ||
634 | rwdata = rwhead = (unsigned char *)malloc(nbtotal); | |
635 | if (rwdata == NULL) { | |
636 | fprintf(stderr, "OUT OF MEMORY at line %d in %s\n", | |
637 | __LINE__, __FILE__); | |
638 | DevSW_FreePacket(packet); | |
639 | return -1; | |
640 | } | |
641 | ||
642 | /* perform the actual read */ | |
643 | fhreal = hsysGetRealFileHandle(stateptr, fh, &flags); | |
644 | if (fhreal == NULL) | |
645 | { | |
646 | /* bad file handle */ | |
647 | err = -1; | |
648 | nbytes = 0; | |
649 | gotlen = 0; | |
650 | } | |
651 | else | |
652 | { | |
653 | if (flags & WRITEOP) | |
654 | fseek(fhreal,0,SEEK_CUR); | |
655 | stateptr->OSptr->FileFlags[fh] = (flags & BINARY) | WRITEOP; | |
656 | if (isatty_(fhreal)) { | |
657 | /* reading from a tty, so do some nasty stuff, reading into rwdata */ | |
658 | if (angel_hostif->gets(stateptr->hostif->hostosarg, (char *)rwdata, | |
659 | nbtotal) != 0) | |
660 | gotlen = strlen((char *)rwdata); | |
661 | else | |
662 | gotlen = 0; | |
663 | stateptr->last_errno = errno; | |
664 | DebugPrintF(("ttyread %d\n", gotlen)); | |
665 | } | |
666 | else { | |
667 | /* not a tty, reading from a real file */ | |
668 | gotlen = fread(rwdata, 1, nbtotal, fhreal); | |
669 | stateptr->last_errno = errno; | |
670 | DebugCheckErr("fread", FALSE, (gotlen == 0), stateptr->last_errno); | |
671 | DebugPrintF(("(%d)\n", gotlen)); | |
672 | } | |
673 | } | |
674 | ||
675 | nbtogo = gotlen; | |
676 | ||
677 | do { | |
678 | /* at least once */ | |
679 | ||
680 | if ((unsigned int) nbtogo <= max_data_in_buffer) | |
681 | nbytes = nbtogo; | |
682 | else | |
683 | nbytes = max_data_in_buffer; | |
684 | nbtogo -= nbytes; | |
685 | ||
686 | /* last ReadX needs subtle adjustment to returned nbtogo */ | |
687 | if (nbtogo == 0 && err == NoError && reason == CL_ReadX) | |
688 | nbleft = nbtotal - gotlen; | |
689 | else | |
690 | nbleft = nbtogo; | |
691 | ||
692 | count = msgbuild(BUFFERDATA(buffhead), "%w%w%w%w%w%w%w", | |
693 | reason|HtoT, 0, ADP_HandleUnknown, | |
694 | ADP_HandleUnknown, err, nbytes, nbleft); | |
695 | ||
696 | if (err == NoError) { | |
697 | /* copy data into buffptr */ | |
698 | memcpy(BUFFERDATA(buffhead)+28, rwdata, nbytes); | |
699 | rwdata += nbytes; | |
700 | count += nbytes; | |
701 | } | |
702 | ||
703 | DebugPrintF(("\treplying err %d, nbytes %d, nbtogo %d\n", | |
704 | err, nbytes, nbtogo)); | |
705 | ||
706 | packet->pk_length = count; | |
707 | Adp_ChannelWrite(CI_CLIB, packet); | |
708 | ||
709 | if (nbtogo == 0 || err != NoError) { | |
710 | /* done */ | |
711 | free(rwhead); | |
712 | return 0; | |
713 | } | |
714 | else { | |
715 | /* await extension */ | |
716 | reason = CL_ReadX; | |
717 | ||
718 | packet = DevSW_AllocatePacket(Armsd_BufferSize); | |
719 | if (packet == NULL) { | |
720 | fprintf(stderr, "COULD NOT ALLOC PACKET at line %d in %s\n", | |
721 | __LINE__, __FILE__); | |
722 | free(rwhead); | |
723 | return -1; | |
724 | } | |
725 | Adp_ChannelRegisterRead(CI_CLIB, NULL, NULL); | |
726 | Adp_ChannelRead(CI_CLIB, &packet); | |
727 | Adp_ChannelRegisterRead(CI_CLIB, | |
728 | (ChannelCallback)HandleSysMessage, | |
729 | stateptr); | |
730 | buffhead = packet->pk_buffer; | |
731 | unpack_message(BUFFERDATA(buffhead),"%w", &reason_code); | |
732 | if (reason_code != (CL_ReadX|TtoH)) { | |
733 | fprintf(stderr, "EXPECTING CL_ReadX GOT %u at line %d in %s\n", | |
734 | reason_code, __LINE__, __FILE__); | |
735 | DevSW_FreePacket(packet); | |
736 | free(rwdata); | |
737 | return -1; | |
738 | } | |
739 | } | |
740 | ||
741 | } while (TRUE); /* will return above on error or when done */ | |
742 | } | |
743 | ||
744 | case CL_ReadX: /* If we're here something has probably gone wrong */ | |
745 | fprintf(stderr, "ERROR: Got unexpected CL_ReadX message\n"); | |
746 | return -1; | |
747 | ||
748 | case CL_Seek: | |
749 | { | |
750 | unpack_message(buffp, "%w%w", &fh, &posn); | |
751 | DebugPrintF(("CL_Seek: fh %d, posn %ld\n", fh, posn)); | |
752 | DevSW_FreePacket(packet); | |
753 | ||
754 | fhreal = hsysGetRealFileHandle(stateptr, fh, NULL); | |
755 | if (fhreal == NULL) | |
756 | err = -1; | |
757 | else { | |
758 | err = fseek(fhreal, posn, SEEK_SET); | |
759 | stateptr->last_errno = errno; | |
760 | DebugCheckErr("fseek", TRUE, err, stateptr->last_errno); | |
761 | } | |
762 | ||
763 | return msgsend(CI_CLIB, "%w%w%w%w%w", CL_Seek|HtoT, | |
764 | DebugID, OSInfo1, OSInfo2, err); | |
765 | } | |
766 | ||
767 | case CL_Flen: | |
768 | { | |
769 | unpack_message(buffp, "%w", &fh); | |
770 | DebugPrintF(("CL_Flen: fh %d ", fh)); | |
771 | DevSW_FreePacket(packet); | |
772 | ||
773 | fhreal = hsysGetRealFileHandle(stateptr, fh, NULL); | |
774 | if (fhreal == NULL) | |
775 | fl = -1; | |
776 | else { | |
777 | posn = ftell(fhreal); | |
778 | if (fseek(fhreal, 0L, SEEK_END) < 0) { | |
779 | fl=-1; | |
780 | } | |
781 | else { | |
782 | fl = ftell(fhreal); | |
783 | fseek(fhreal, posn, SEEK_SET); | |
784 | } | |
785 | stateptr->last_errno = errno; | |
786 | } | |
787 | DebugPrintF(("returning len %ld\n", fl)); | |
788 | return msgsend(CI_CLIB, "%w%w%w%w%w", CL_Flen|HtoT, DebugID, OSInfo1, | |
789 | OSInfo2, fl); | |
790 | } | |
791 | ||
792 | case CL_IsTTY: | |
793 | { | |
794 | int ttyOrNot; | |
795 | unpack_message(buffp, "%w", &fh); | |
796 | DebugPrintF(("CL_IsTTY: fh %d ", fh)); | |
797 | DevSW_FreePacket(packet); | |
798 | ||
799 | fhreal = hsysGetRealFileHandle(stateptr, fh, NULL); | |
800 | if (fhreal == NULL) | |
801 | ttyOrNot = FALSE; | |
802 | else { | |
803 | ttyOrNot = isatty_(fhreal); | |
804 | stateptr->last_errno = errno; | |
805 | } | |
806 | DebugPrintF(("returning %s\n", ttyOrNot ? "tty (1)" : "not (0)")); | |
807 | ||
808 | return msgsend(CI_CLIB, "%w%w%w%w%w",CL_IsTTY|HtoT, | |
809 | DebugID, OSInfo1, OSInfo2, ttyOrNot); | |
810 | } | |
811 | ||
812 | case CL_TmpNam: | |
813 | { | |
814 | char *name; | |
815 | unsigned int tnamelen, TargetID; | |
816 | unpack_message(buffp, "%w%w", &tnamelen, &TargetID); | |
817 | DebugPrintF(("CL_TmpNam: tnamelen %d TargetID %d: ", | |
818 | tnamelen, TargetID)); | |
819 | DevSW_FreePacket(packet); | |
820 | ||
821 | TargetID = TargetID & 0xFF; | |
822 | if (stateptr->OSptr->TempNames[TargetID] == NULL) { | |
823 | if ((stateptr->OSptr->TempNames[TargetID] = | |
824 | (char *)malloc(L_tmpnam)) == NULL) | |
825 | { | |
826 | fprintf(stderr, "OUT OF MEMORY at line %d in %s\n", | |
827 | __LINE__, __FILE__); | |
828 | return -1; | |
829 | } | |
830 | tmpnam(stateptr->OSptr->TempNames[TargetID]); | |
831 | } | |
832 | name = stateptr->OSptr->TempNames[TargetID]; | |
833 | len = strlen(name) + 1; | |
834 | packet = DevSW_AllocatePacket(Armsd_BufferSize); | |
835 | if (packet == NULL) | |
836 | { | |
837 | fprintf(stderr, "COULD NOT ALLOC PACKET at line %d in %s\n", | |
838 | __LINE__, __FILE__); | |
839 | return -1; | |
840 | } | |
841 | buffhead = packet->pk_buffer; | |
842 | if (len > tnamelen) { | |
843 | DebugPrintF(("TMPNAME TOO LONG!\n")); | |
844 | count = msgbuild(BUFFERDATA(buffhead), "%w%w%w%w%w", | |
845 | CL_TmpNam|HtoT, DebugID, OSInfo1, OSInfo2, -1); | |
846 | } | |
847 | else { | |
848 | DebugPrintF(("returning \"%s\"\n", name)); | |
849 | count = msgbuild(BUFFERDATA(buffhead), "%w%w%w%w%w%w", CL_TmpNam|HtoT, | |
850 | DebugID, OSInfo1, OSInfo2, 0, len); | |
851 | strcpy((char *)BUFFERDATA(buffhead)+count, name); | |
852 | count +=len+1; | |
853 | } | |
854 | packet->pk_length = count; | |
855 | Adp_ChannelWrite(CI_CLIB, packet);/* Send message. */ | |
856 | return 0; | |
857 | } | |
858 | ||
859 | case CL_Unrecognised: | |
860 | DebugPrintF(("CL_Unrecognised!!\n")); | |
861 | return 0; | |
862 | ||
863 | default: | |
864 | fprintf(stderr, "UNRECOGNISED CL code %08x\n", reason_code); | |
865 | break; | |
866 | /* Need some sort of error handling here. */ | |
867 | /* A call to CL_Unrecognised should suffice */ | |
868 | } | |
869 | return -1; /* Stop a potential compiler warning */ | |
870 | } | |
871 | ||
872 | #ifdef COMPILING_ON_WINDOWS | |
873 | ||
874 | #include <windows.h> | |
875 | ||
876 | extern HWND hwndParent; | |
877 | ||
878 | void panic(const char *format, ...) | |
879 | { | |
880 | char buf[2048]; | |
881 | va_list args; | |
882 | ||
883 | Adp_CloseDevice(); | |
884 | ||
885 | va_start(args, format); | |
886 | vsprintf(buf, format, args); | |
887 | ||
888 | MessageBox(hwndParent, (LPCTSTR)buf, (LPCTSTR)"Fatal Error:", MB_OK); | |
889 | ||
890 | /* SJ - Not the proper way to shutdown the app */ | |
891 | exit(EXIT_FAILURE); | |
892 | ||
893 | /* | |
894 | if (hwndParent != NULL) | |
895 | SendMessage(hwndParent, WM_QUIT, 0, 0); | |
896 | */ | |
897 | ||
898 | va_end(args); | |
899 | } | |
900 | ||
901 | #else | |
902 | ||
903 | void panic(const char *format, ...) | |
904 | { | |
905 | va_list args; | |
906 | ||
907 | va_start(args, format); | |
908 | fprintf(stderr, "Fatal error: "); | |
909 | vfprintf(stderr, format, args); | |
910 | fprintf(stderr,"\n"); | |
911 | ||
912 | exit(EXIT_FAILURE); | |
913 | } | |
914 | ||
915 | #endif | |
916 | ||
917 | /* EOF hsys.c */ |