| 1 | /* $Id: macstore.c,v 1.18 2003/03/29 23:07:55 ben Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * macstore.c: Macintosh-specific impementation of the interface |
| 5 | * defined in storage.h |
| 6 | */ |
| 7 | |
| 8 | #include <MacTypes.h> |
| 9 | #include <Folders.h> |
| 10 | #include <Memory.h> |
| 11 | #include <Resources.h> |
| 12 | #include <TextUtils.h> |
| 13 | |
| 14 | #include <stdio.h> |
| 15 | #include <string.h> |
| 16 | |
| 17 | #include "putty.h" |
| 18 | #include "storage.h" |
| 19 | #include "mac.h" |
| 20 | #include "macresid.h" |
| 21 | |
| 22 | |
| 23 | OSErr FSpGetDirID(FSSpec *f, long *idp, Boolean makeit); |
| 24 | |
| 25 | /* |
| 26 | * We store each session as a file in the "PuTTY" sub-directory of the |
| 27 | * preferences folder. Each (key,value) pair is stored as a resource. |
| 28 | */ |
| 29 | |
| 30 | OSErr get_putty_dir(Boolean makeit, short *pVRefNum, long *pDirID) |
| 31 | { |
| 32 | OSErr error = noErr; |
| 33 | short prefVRefNum; |
| 34 | FSSpec puttydir; |
| 35 | long prefDirID, puttyDirID; |
| 36 | |
| 37 | error = FindFolder(kOnSystemDisk, kPreferencesFolderType, makeit, |
| 38 | &prefVRefNum, &prefDirID); |
| 39 | if (error != noErr) goto out; |
| 40 | |
| 41 | error = FSMakeFSSpec(prefVRefNum, prefDirID, "\pPuTTY", &puttydir); |
| 42 | if (error != noErr && error != fnfErr) goto out; |
| 43 | error = FSpGetDirID(&puttydir, &puttyDirID, makeit); |
| 44 | if (error != noErr) goto out; |
| 45 | |
| 46 | *pVRefNum = prefVRefNum; |
| 47 | *pDirID = puttyDirID; |
| 48 | |
| 49 | out: |
| 50 | return error; |
| 51 | } |
| 52 | |
| 53 | OSErr get_session_dir(Boolean makeit, short *pVRefNum, long *pDirID) { |
| 54 | OSErr error = noErr; |
| 55 | short puttyVRefNum; |
| 56 | FSSpec sessdir; |
| 57 | long puttyDirID, sessDirID; |
| 58 | |
| 59 | error = get_putty_dir(makeit, &puttyVRefNum, &puttyDirID); |
| 60 | if (error != noErr) goto out; |
| 61 | error = FSMakeFSSpec(puttyVRefNum, puttyDirID, "\pSaved Sessions", |
| 62 | &sessdir); |
| 63 | if (error != noErr && error != fnfErr) goto out; |
| 64 | error = FSpGetDirID(&sessdir, &sessDirID, makeit); |
| 65 | if (error != noErr) goto out; |
| 66 | |
| 67 | *pVRefNum = puttyVRefNum; |
| 68 | *pDirID = sessDirID; |
| 69 | |
| 70 | out: |
| 71 | return error; |
| 72 | } |
| 73 | |
| 74 | OSErr FSpGetDirID(FSSpec *f, long *idp, Boolean makeit) { |
| 75 | CInfoPBRec pb; |
| 76 | OSErr error = noErr; |
| 77 | |
| 78 | pb.dirInfo.ioNamePtr = f->name; |
| 79 | pb.dirInfo.ioVRefNum = f->vRefNum; |
| 80 | pb.dirInfo.ioDrDirID = f->parID; |
| 81 | pb.dirInfo.ioFDirIndex = 0; |
| 82 | error = PBGetCatInfoSync(&pb); |
| 83 | if (error == fnfErr && makeit) |
| 84 | return FSpDirCreate(f, smSystemScript, idp); |
| 85 | if (error != noErr) goto out; |
| 86 | if ((pb.dirInfo.ioFlAttrib & ioDirMask) == 0) { |
| 87 | error = dirNFErr; |
| 88 | goto out; |
| 89 | } |
| 90 | *idp = pb.dirInfo.ioDrDirID; |
| 91 | |
| 92 | out: |
| 93 | return error; |
| 94 | } |
| 95 | |
| 96 | /* Copy a resource into the current resource file */ |
| 97 | static OSErr copy_resource(ResType restype, short resid) |
| 98 | { |
| 99 | Handle h; |
| 100 | Str255 resname; |
| 101 | |
| 102 | h = GetResource(restype, resid); |
| 103 | if (h != NULL) { |
| 104 | GetResInfo(h, &resid, &restype, resname); |
| 105 | DetachResource(h); |
| 106 | AddResource(h, restype, resid, resname); |
| 107 | if (ResError() == noErr) |
| 108 | WriteResource(h); |
| 109 | } |
| 110 | return ResError(); |
| 111 | } |
| 112 | |
| 113 | struct write_settings { |
| 114 | int fd; |
| 115 | FSSpec tmpfile; |
| 116 | FSSpec dstfile; |
| 117 | }; |
| 118 | |
| 119 | void *open_settings_w(char const *sessionname) { |
| 120 | short sessVRefNum; |
| 121 | long sessDirID; |
| 122 | OSErr error; |
| 123 | Str255 psessionname; |
| 124 | FSSpec dstfile; |
| 125 | |
| 126 | error = get_session_dir(kCreateFolder, &sessVRefNum, &sessDirID); |
| 127 | if (error != noErr) return NULL; |
| 128 | |
| 129 | if (!sessionname || !*sessionname) |
| 130 | sessionname = "Default Settings"; |
| 131 | c2pstrcpy(psessionname, sessionname); |
| 132 | error = FSMakeFSSpec(sessVRefNum, sessDirID, psessionname, &dstfile); |
| 133 | if (error == fnfErr) { |
| 134 | FSpCreateResFile(&dstfile, PUTTY_CREATOR, SESS_TYPE, smSystemScript); |
| 135 | if ((error = ResError()) != noErr) return NULL; |
| 136 | } else if (error != noErr) return NULL; |
| 137 | |
| 138 | return open_settings_w_fsp(&dstfile); |
| 139 | } |
| 140 | |
| 141 | /* |
| 142 | * NB: Destination file must exist. |
| 143 | */ |
| 144 | void *open_settings_w_fsp(FSSpec *dstfile) |
| 145 | { |
| 146 | short tmpVRefNum; |
| 147 | long tmpDirID; |
| 148 | struct write_settings *ws; |
| 149 | OSErr error; |
| 150 | Str255 tmpname; |
| 151 | |
| 152 | ws = snew(struct write_settings); |
| 153 | ws->dstfile = *dstfile; |
| 154 | |
| 155 | /* Create a temporary file to save to first. */ |
| 156 | error = FindFolder(ws->dstfile.vRefNum, kTemporaryFolderType, |
| 157 | kCreateFolder, &tmpVRefNum, &tmpDirID); |
| 158 | if (error != noErr) goto out; |
| 159 | c2pstrcpy(tmpname, tmpnam(NULL)); |
| 160 | error = FSMakeFSSpec(tmpVRefNum, tmpDirID, tmpname, &ws->tmpfile); |
| 161 | if (error != noErr && error != fnfErr) goto out; |
| 162 | if (error == noErr) { |
| 163 | error = FSpDelete(&ws->tmpfile); |
| 164 | if (error != noErr) goto out; |
| 165 | } |
| 166 | FSpCreateResFile(&ws->tmpfile, PUTTY_CREATOR, SESS_TYPE, smSystemScript); |
| 167 | if ((error = ResError()) != noErr) goto out; |
| 168 | |
| 169 | ws->fd = FSpOpenResFile(&ws->tmpfile, fsWrPerm); |
| 170 | if (ws->fd == -1) {error = ResError(); goto out;} |
| 171 | |
| 172 | /* Set up standard resources. Doesn't matter if these fail. */ |
| 173 | copy_resource('STR ', -16396); |
| 174 | copy_resource('TMPL', TMPL_Int); |
| 175 | |
| 176 | return ws; |
| 177 | |
| 178 | out: |
| 179 | safefree(ws); |
| 180 | fatalbox("Failed to open session for write (%d)", error); |
| 181 | } |
| 182 | |
| 183 | void write_setting_s(void *handle, char const *key, char const *value) { |
| 184 | int fd = *(int *)handle; |
| 185 | Handle h; |
| 186 | int id; |
| 187 | OSErr error; |
| 188 | Str255 pkey; |
| 189 | |
| 190 | UseResFile(fd); |
| 191 | if (ResError() != noErr) |
| 192 | fatalbox("Failed to open saved session (%d)", ResError()); |
| 193 | |
| 194 | error = PtrToHand(value, &h, strlen(value)); |
| 195 | if (error != noErr) |
| 196 | fatalbox("Failed to allocate memory"); |
| 197 | /* Put the data in a resource. */ |
| 198 | id = Unique1ID(FOUR_CHAR_CODE('TEXT')); |
| 199 | if (ResError() != noErr) |
| 200 | fatalbox("Failed to get ID for resource %s (%d)", key, ResError()); |
| 201 | c2pstrcpy(pkey, key); |
| 202 | AddResource(h, FOUR_CHAR_CODE('TEXT'), id, pkey); |
| 203 | if (ResError() != noErr) |
| 204 | fatalbox("Failed to add resource %s (%d)", key, ResError()); |
| 205 | } |
| 206 | |
| 207 | void write_setting_i(void *handle, char const *key, int value) { |
| 208 | int fd = *(int *)handle; |
| 209 | Handle h; |
| 210 | int id; |
| 211 | OSErr error; |
| 212 | Str255 pkey; |
| 213 | |
| 214 | UseResFile(fd); |
| 215 | if (ResError() != noErr) |
| 216 | fatalbox("Failed to open saved session (%d)", ResError()); |
| 217 | |
| 218 | /* XXX assume all systems have the same "int" format */ |
| 219 | error = PtrToHand(&value, &h, sizeof(int)); |
| 220 | if (error != noErr) |
| 221 | fatalbox("Failed to allocate memory (%d)", error); |
| 222 | |
| 223 | /* Put the data in a resource. */ |
| 224 | id = Unique1ID(FOUR_CHAR_CODE('Int ')); |
| 225 | if (ResError() != noErr) |
| 226 | fatalbox("Failed to get ID for resource %s (%d)", key, ResError()); |
| 227 | c2pstrcpy(pkey, key); |
| 228 | AddResource(h, FOUR_CHAR_CODE('Int '), id, pkey); |
| 229 | if (ResError() != noErr) |
| 230 | fatalbox("Failed to add resource %s (%d)", key, ResError()); |
| 231 | } |
| 232 | |
| 233 | void close_settings_w(void *handle) { |
| 234 | struct write_settings *ws = handle; |
| 235 | OSErr error; |
| 236 | |
| 237 | CloseResFile(ws->fd); |
| 238 | if ((error = ResError()) != noErr) |
| 239 | goto out; |
| 240 | error = FSpExchangeFiles(&ws->tmpfile, &ws->dstfile); |
| 241 | if (error != noErr) goto out; |
| 242 | error = FSpDelete(&ws->tmpfile); |
| 243 | if (error != noErr) goto out; |
| 244 | return; |
| 245 | |
| 246 | out: |
| 247 | fatalbox("Close of saved session failed (%d)", error); |
| 248 | safefree(handle); |
| 249 | } |
| 250 | |
| 251 | void *open_settings_r(char const *sessionname) |
| 252 | { |
| 253 | short sessVRefNum; |
| 254 | long sessDirID; |
| 255 | FSSpec sessfile; |
| 256 | OSErr error; |
| 257 | Str255 psessionname; |
| 258 | |
| 259 | error = get_session_dir(kDontCreateFolder, &sessVRefNum, &sessDirID); |
| 260 | |
| 261 | if (!sessionname || !*sessionname) |
| 262 | sessionname = "Default Settings"; |
| 263 | c2pstrcpy(psessionname, sessionname); |
| 264 | error = FSMakeFSSpec(sessVRefNum, sessDirID, psessionname, &sessfile); |
| 265 | if (error != noErr) goto out; |
| 266 | return open_settings_r_fsp(&sessfile); |
| 267 | |
| 268 | out: |
| 269 | return NULL; |
| 270 | } |
| 271 | |
| 272 | void *open_settings_r_fsp(FSSpec *sessfile) |
| 273 | { |
| 274 | OSErr error; |
| 275 | int fd; |
| 276 | int *handle; |
| 277 | |
| 278 | fd = FSpOpenResFile(sessfile, fsRdPerm); |
| 279 | if (fd == 0) {error = ResError(); goto out;} |
| 280 | |
| 281 | handle = snew(int); |
| 282 | *handle = fd; |
| 283 | return handle; |
| 284 | |
| 285 | out: |
| 286 | return NULL; |
| 287 | } |
| 288 | |
| 289 | char *read_setting_s(void *handle, char const *key, char *buffer, int buflen) { |
| 290 | int fd; |
| 291 | Handle h; |
| 292 | size_t len; |
| 293 | Str255 pkey; |
| 294 | |
| 295 | if (handle == NULL) goto out; |
| 296 | fd = *(int *)handle; |
| 297 | UseResFile(fd); |
| 298 | if (ResError() != noErr) goto out; |
| 299 | c2pstrcpy(pkey, key); |
| 300 | h = Get1NamedResource(FOUR_CHAR_CODE('TEXT'), pkey); |
| 301 | if (h == NULL) goto out; |
| 302 | |
| 303 | len = GetHandleSize(h); |
| 304 | if (len + 1 > buflen) goto out; |
| 305 | memcpy(buffer, *h, len); |
| 306 | buffer[len] = '\0'; |
| 307 | |
| 308 | ReleaseResource(h); |
| 309 | if (ResError() != noErr) goto out; |
| 310 | return buffer; |
| 311 | |
| 312 | out: |
| 313 | return NULL; |
| 314 | } |
| 315 | |
| 316 | int read_setting_i(void *handle, char const *key, int defvalue) { |
| 317 | int fd; |
| 318 | Handle h; |
| 319 | int value; |
| 320 | Str255 pkey; |
| 321 | |
| 322 | if (handle == NULL) goto out; |
| 323 | fd = *(int *)handle; |
| 324 | UseResFile(fd); |
| 325 | if (ResError() != noErr) goto out; |
| 326 | c2pstrcpy(pkey, key); |
| 327 | h = Get1NamedResource(FOUR_CHAR_CODE('Int '), pkey); |
| 328 | if (h == NULL) goto out; |
| 329 | value = *(int *)*h; |
| 330 | ReleaseResource(h); |
| 331 | if (ResError() != noErr) goto out; |
| 332 | return value; |
| 333 | |
| 334 | out: |
| 335 | return defvalue; |
| 336 | } |
| 337 | |
| 338 | int read_setting_fontspec(void *handle, const char *name, FontSpec *result) |
| 339 | { |
| 340 | char *settingname; |
| 341 | FontSpec ret; |
| 342 | char tmp[256]; |
| 343 | |
| 344 | if (!read_setting_s(handle, name, tmp, sizeof(tmp))) |
| 345 | return 0; |
| 346 | c2pstrcpy(ret.name, tmp); |
| 347 | settingname = dupcat(name, "Face", NULL); |
| 348 | ret.face = read_setting_i(handle, settingname, 0); |
| 349 | sfree(settingname); |
| 350 | settingname = dupcat(name, "Height", NULL); |
| 351 | ret.size = read_setting_i(handle, settingname, 0); |
| 352 | sfree(settingname); |
| 353 | if (ret.size == 0) return 0; |
| 354 | *result = ret; |
| 355 | return 1; |
| 356 | } |
| 357 | |
| 358 | void write_setting_fontspec(void *handle, const char *name, FontSpec font) |
| 359 | { |
| 360 | char *settingname; |
| 361 | char tmp[256]; |
| 362 | |
| 363 | p2cstrcpy(tmp, font.name); |
| 364 | write_setting_s(handle, name, tmp); |
| 365 | settingname = dupcat(name, "Face", NULL); |
| 366 | write_setting_i(handle, settingname, font.face); |
| 367 | sfree(settingname); |
| 368 | settingname = dupcat(name, "Size", NULL); |
| 369 | write_setting_i(handle, settingname, font.size); |
| 370 | sfree(settingname); |
| 371 | } |
| 372 | |
| 373 | int read_setting_filename(void *handle, const char *key, Filename *result) |
| 374 | { |
| 375 | int fd; |
| 376 | AliasHandle h; |
| 377 | Boolean changed; |
| 378 | OSErr err; |
| 379 | Str255 pkey; |
| 380 | |
| 381 | if (handle == NULL) goto out; |
| 382 | fd = *(int *)handle; |
| 383 | UseResFile(fd); |
| 384 | if (ResError() != noErr) goto out; |
| 385 | c2pstrcpy(pkey, key); |
| 386 | h = (AliasHandle)Get1NamedResource(rAliasType, pkey); |
| 387 | if (h == NULL) goto out; |
| 388 | if ((*h)->userType == 'pTTY' && (*h)->aliasSize == sizeof(**h)) |
| 389 | memset(result, 0, sizeof(*result)); |
| 390 | else { |
| 391 | err = ResolveAlias(NULL, h, &result->fss, &changed); |
| 392 | if (err != noErr && err != fnfErr) goto out; |
| 393 | if ((*h)->userType == 'pTTY') { |
| 394 | long dirid; |
| 395 | StrFileName fname; |
| 396 | |
| 397 | /* Tail of record is pascal string contaning leafname */ |
| 398 | if (FSpGetDirID(&result->fss, &dirid, FALSE) != noErr) goto out; |
| 399 | memcpy(fname, (char *)*h + (*h)->aliasSize, |
| 400 | GetHandleSize((Handle)h) - (*h)->aliasSize); |
| 401 | err = FSMakeFSSpec(result->fss.vRefNum, dirid, fname, |
| 402 | &result->fss); |
| 403 | if (err != noErr && err != fnfErr) goto out; |
| 404 | } |
| 405 | } |
| 406 | ReleaseResource((Handle)h); |
| 407 | if (ResError() != noErr) goto out; |
| 408 | return 1; |
| 409 | |
| 410 | out: |
| 411 | return 0; |
| 412 | } |
| 413 | |
| 414 | void write_setting_filename(void *handle, const char *key, Filename fn) |
| 415 | { |
| 416 | int fd = *(int *)handle; |
| 417 | AliasHandle h; |
| 418 | int id; |
| 419 | OSErr error; |
| 420 | Str255 pkey; |
| 421 | |
| 422 | UseResFile(fd); |
| 423 | if (ResError() != noErr) |
| 424 | fatalbox("Failed to open saved session (%d)", ResError()); |
| 425 | |
| 426 | if (filename_is_null(fn)) { |
| 427 | /* Generate a special "null" alias */ |
| 428 | h = (AliasHandle)NewHandle(sizeof(**h)); |
| 429 | if (h == NULL) |
| 430 | fatalbox("Failed to create fake alias"); |
| 431 | (*h)->userType = 'pTTY'; |
| 432 | (*h)->aliasSize = sizeof(**h); |
| 433 | } else { |
| 434 | error = NewAlias(NULL, &fn.fss, &h); |
| 435 | if (error == fnfErr) { |
| 436 | /* |
| 437 | * NewAlias can't create an alias for a nonexistent file. |
| 438 | * Create an alias for the directory, and record the |
| 439 | * filename as well. |
| 440 | */ |
| 441 | FSSpec tmpfss; |
| 442 | |
| 443 | FSMakeFSSpec(fn.fss.vRefNum, fn.fss.parID, NULL, &tmpfss); |
| 444 | error = NewAlias(NULL, &tmpfss, &h); |
| 445 | if (error != noErr) |
| 446 | fatalbox("Failed to create alias"); |
| 447 | (*h)->userType = 'pTTY'; |
| 448 | SetHandleSize((Handle)h, (*h)->aliasSize + fn.fss.name[0] + 1); |
| 449 | if (MemError() != noErr) |
| 450 | fatalbox("Failed to create alias"); |
| 451 | memcpy((char *)*h + (*h)->aliasSize, fn.fss.name, |
| 452 | fn.fss.name[0] + 1); |
| 453 | } |
| 454 | if (error != noErr) |
| 455 | fatalbox("Failed to create alias"); |
| 456 | } |
| 457 | /* Put the data in a resource. */ |
| 458 | id = Unique1ID(rAliasType); |
| 459 | if (ResError() != noErr) |
| 460 | fatalbox("Failed to get ID for resource %s (%d)", key, ResError()); |
| 461 | c2pstrcpy(pkey, key); |
| 462 | AddResource((Handle)h, rAliasType, id, pkey); |
| 463 | if (ResError() != noErr) |
| 464 | fatalbox("Failed to add resource %s (%d)", key, ResError()); |
| 465 | } |
| 466 | |
| 467 | void close_settings_r(void *handle) { |
| 468 | int fd; |
| 469 | |
| 470 | if (handle == NULL) return; |
| 471 | fd = *(int *)handle; |
| 472 | CloseResFile(fd); |
| 473 | if (ResError() != noErr) |
| 474 | fatalbox("Close of saved session failed (%d)", ResError()); |
| 475 | sfree(handle); |
| 476 | } |
| 477 | |
| 478 | void del_settings(char const *sessionname) { |
| 479 | OSErr error; |
| 480 | FSSpec sessfile; |
| 481 | short sessVRefNum; |
| 482 | long sessDirID; |
| 483 | Str255 psessionname; |
| 484 | |
| 485 | error = get_session_dir(kDontCreateFolder, &sessVRefNum, &sessDirID); |
| 486 | |
| 487 | c2pstrcpy(psessionname, sessionname); |
| 488 | error = FSMakeFSSpec(sessVRefNum, sessDirID, psessionname, &sessfile); |
| 489 | if (error != noErr) goto out; |
| 490 | |
| 491 | error = FSpDelete(&sessfile); |
| 492 | return; |
| 493 | out: |
| 494 | fatalbox("Delete session failed (%d)", error); |
| 495 | } |
| 496 | |
| 497 | struct enum_settings_state { |
| 498 | short vRefNum; |
| 499 | long dirID; |
| 500 | int index; |
| 501 | }; |
| 502 | |
| 503 | void *enum_settings_start(void) { |
| 504 | OSErr error; |
| 505 | struct enum_settings_state *state; |
| 506 | |
| 507 | state = safemalloc(sizeof(*state)); |
| 508 | error = get_session_dir(kDontCreateFolder, &state->vRefNum, &state->dirID); |
| 509 | if (error != noErr) { |
| 510 | safefree(state); |
| 511 | return NULL; |
| 512 | } |
| 513 | state->index = 1; |
| 514 | return state; |
| 515 | } |
| 516 | |
| 517 | char *enum_settings_next(void *handle, char *buffer, int buflen) { |
| 518 | struct enum_settings_state *e = handle; |
| 519 | CInfoPBRec pb; |
| 520 | OSErr error = noErr; |
| 521 | Str255 name; |
| 522 | |
| 523 | if (e == NULL) return NULL; |
| 524 | do { |
| 525 | pb.hFileInfo.ioNamePtr = name; |
| 526 | pb.hFileInfo.ioVRefNum = e->vRefNum; |
| 527 | pb.hFileInfo.ioDirID = e->dirID; |
| 528 | pb.hFileInfo.ioFDirIndex = e->index++; |
| 529 | error = PBGetCatInfoSync(&pb); |
| 530 | if (error != noErr) return NULL; |
| 531 | } while (!((pb.hFileInfo.ioFlAttrib & ioDirMask) == 0 && |
| 532 | pb.hFileInfo.ioFlFndrInfo.fdCreator == PUTTY_CREATOR && |
| 533 | pb.hFileInfo.ioFlFndrInfo.fdType == SESS_TYPE && |
| 534 | name[0] < buflen)); |
| 535 | |
| 536 | p2cstrcpy(buffer, name); |
| 537 | return buffer; |
| 538 | } |
| 539 | |
| 540 | void enum_settings_finish(void *handle) { |
| 541 | |
| 542 | safefree(handle); |
| 543 | } |
| 544 | |
| 545 | #define SEED_SIZE 512 |
| 546 | |
| 547 | void read_random_seed(noise_consumer_t consumer) |
| 548 | { |
| 549 | short puttyVRefNum; |
| 550 | long puttyDirID; |
| 551 | OSErr error; |
| 552 | char buf[SEED_SIZE]; |
| 553 | short refnum; |
| 554 | long count = SEED_SIZE; |
| 555 | |
| 556 | if (get_putty_dir(kDontCreateFolder, &puttyVRefNum, &puttyDirID) != noErr) |
| 557 | return; |
| 558 | if (HOpenDF(puttyVRefNum, puttyDirID, "\pPuTTY Random Seed", fsRdPerm, |
| 559 | &refnum) != noErr) |
| 560 | return; |
| 561 | error = FSRead(refnum, &count, buf); |
| 562 | if (error != noErr && error != eofErr) |
| 563 | return; |
| 564 | (*consumer)(buf, count); |
| 565 | FSClose(refnum); |
| 566 | } |
| 567 | |
| 568 | /* |
| 569 | * We don't bother with the usual FSpExchangeFiles dance here because |
| 570 | * it doesn't really matter if the old random seed gets lost. |
| 571 | */ |
| 572 | void write_random_seed(void *data, int len) |
| 573 | { |
| 574 | short puttyVRefNum; |
| 575 | long puttyDirID; |
| 576 | OSErr error; |
| 577 | FSSpec dstfile; |
| 578 | short refnum; |
| 579 | long count = len; |
| 580 | |
| 581 | if (get_putty_dir(kCreateFolder, &puttyVRefNum, &puttyDirID) != noErr) |
| 582 | return; |
| 583 | |
| 584 | error = FSMakeFSSpec(puttyVRefNum, puttyDirID, "\pPuTTY Random Seed", |
| 585 | &dstfile); |
| 586 | if (error == fnfErr) { |
| 587 | /* Set up standard resources */ |
| 588 | FSpCreateResFile(&dstfile, INTERNAL_CREATOR, SEED_TYPE, smRoman); |
| 589 | refnum = FSpOpenResFile(&dstfile, fsWrPerm); |
| 590 | if (ResError() == noErr) { |
| 591 | copy_resource('STR ', -16397); |
| 592 | CloseResFile(refnum); |
| 593 | } |
| 594 | } else if (error != noErr) return; |
| 595 | |
| 596 | if (FSpOpenDF(&dstfile, fsWrPerm, &refnum) != noErr) return; |
| 597 | FSWrite(refnum, &count, data); |
| 598 | FSClose(refnum); |
| 599 | |
| 600 | return; |
| 601 | } |
| 602 | |
| 603 | /* |
| 604 | * Emacs magic: |
| 605 | * Local Variables: |
| 606 | * c-file-style: "simon" |
| 607 | * End: |
| 608 | */ |