git.distorted.org.uk Git - u/mdw/putty/blob - mac/macstore.c

   1 /* $Id: macstore.c,v 1.12 2003/01/21 00:27:24 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     c2pstrcpy(psessionname, sessionname);
 130     error = FSMakeFSSpec(sessVRefNum, sessDirID, psessionname, &dstfile);
 131     if (error == fnfErr) {
 132         FSpCreateResFile(&dstfile, PUTTY_CREATOR, SESS_TYPE, smSystemScript);
 133         if ((error = ResError()) != noErr) return NULL;
 134     } else if (error != noErr) return NULL;
 135
 136     return open_settings_w_fsp(&dstfile);
 137 }
 138
 139 /*
 140  * NB: Destination file must exist.
 141  */
 142 void *open_settings_w_fsp(FSSpec *dstfile)
 143 {
 144     short tmpVRefNum;
 145     long tmpDirID;
 146     struct write_settings *ws;
 147     OSErr error;
 148     Str255 tmpname;
 149
 150     ws = smalloc(sizeof *ws);
 151     ws->dstfile = *dstfile;
 152
 153     /* Create a temporary file to save to first. */
 154     error = FindFolder(ws->dstfile.vRefNum, kTemporaryFolderType,
 155                        kCreateFolder, &tmpVRefNum, &tmpDirID);
 156     if (error != noErr) goto out;
 157     c2pstrcpy(tmpname, tmpnam(NULL));
 158     error = FSMakeFSSpec(tmpVRefNum, tmpDirID, tmpname, &ws->tmpfile);
 159     if (error != noErr && error != fnfErr) goto out;
 160     if (error == noErr) {
 161         error = FSpDelete(&ws->tmpfile);
 162         if (error != noErr) goto out;
 163     }
 164     FSpCreateResFile(&ws->tmpfile, PUTTY_CREATOR, SESS_TYPE, smSystemScript);
 165     if ((error = ResError()) != noErr) goto out;
 166
 167     ws->fd = FSpOpenResFile(&ws->tmpfile, fsWrPerm);
 168     if (ws->fd == -1) {error = ResError(); goto out;}
 169
 170     /* Set up standard resources.  Doesn't matter if these fail. */
 171     copy_resource('STR ', -16396);
 172     copy_resource('TMPL', TMPL_Int);
 173
 174     return ws;
 175
 176   out:
 177     safefree(ws);
 178     fatalbox("Failed to open session for write (%d)", error);
 179 }
 180
 181 void write_setting_s(void *handle, char const *key, char const *value) {
 182     int fd = *(int *)handle;
 183     Handle h;
 184     int id;
 185     OSErr error;
 186
 187     UseResFile(fd);
 188     if (ResError() != noErr)
 189         fatalbox("Failed to open saved session (%d)", ResError());
 190
 191     error = PtrToHand(value, &h, strlen(value));
 192     if (error != noErr)
 193         fatalbox("Failed to allocate memory");
 194     /* Put the data in a resource. */
 195     id = Unique1ID(FOUR_CHAR_CODE('TEXT'));
 196     if (ResError() != noErr)
 197         fatalbox("Failed to get ID for resource %s (%d)", key, ResError());
 198     addresource(h, FOUR_CHAR_CODE('TEXT'), id, key);
 199     if (ResError() != noErr)
 200         fatalbox("Failed to add resource %s (%d)", key, ResError());
 201 }
 202
 203 void write_setting_i(void *handle, char const *key, int value) {
 204     int fd = *(int *)handle;
 205     Handle h;
 206     int id;
 207     OSErr error;
 208
 209     UseResFile(fd);
 210     if (ResError() != noErr)
 211         fatalbox("Failed to open saved session (%d)", ResError());
 212
 213     /* XXX assume all systems have the same "int" format */
 214     error = PtrToHand(&value, &h, sizeof(int));
 215     if (error != noErr)
 216         fatalbox("Failed to allocate memory (%d)", error);
 217
 218     /* Put the data in a resource. */
 219     id = Unique1ID(FOUR_CHAR_CODE('Int '));
 220     if (ResError() != noErr)
 221         fatalbox("Failed to get ID for resource %s (%d)", key, ResError());
 222     addresource(h, FOUR_CHAR_CODE('Int '), id, key);
 223     if (ResError() != noErr)
 224         fatalbox("Failed to add resource %s (%d)", key, ResError());
 225 }
 226
 227 void close_settings_w(void *handle) {
 228     struct write_settings *ws = handle;
 229     OSErr error;
 230
 231     CloseResFile(ws->fd);
 232     if ((error = ResError()) != noErr)
 233         goto out;
 234     error = FSpExchangeFiles(&ws->tmpfile, &ws->dstfile);
 235     if (error != noErr) goto out;
 236     error = FSpDelete(&ws->tmpfile);
 237     if (error != noErr) goto out;
 238     return;
 239
 240   out:
 241     fatalbox("Close of saved session failed (%d)", error);
 242     safefree(handle);
 243 }
 244
 245 void *open_settings_r(char const *sessionname)
 246 {
 247     short sessVRefNum;
 248     long sessDirID;
 249     FSSpec sessfile;
 250     OSErr error;
 251     Str255 psessionname;
 252
 253     error = get_session_dir(kDontCreateFolder, &sessVRefNum, &sessDirID);
 254
 255     c2pstrcpy(psessionname, sessionname);
 256     error = FSMakeFSSpec(sessVRefNum, sessDirID, psessionname, &sessfile);
 257     if (error != noErr) goto out;
 258     return open_settings_r_fsp(&sessfile);
 259
 260   out:
 261     return NULL;
 262 }
 263
 264 void *open_settings_r_fsp(FSSpec *sessfile)
 265 {
 266     OSErr error;
 267     int fd;
 268     int *handle;
 269
 270     fd = FSpOpenResFile(sessfile, fsRdPerm);
 271     if (fd == 0) {error = ResError(); goto out;}
 272
 273     handle = safemalloc(sizeof *handle);
 274     *handle = fd;
 275     return handle;
 276
 277   out:
 278     return NULL;
 279 }
 280
 281 char *read_setting_s(void *handle, char const *key, char *buffer, int buflen) {
 282     int fd;
 283     Handle h;
 284     size_t len;
 285
 286     if (handle == NULL) goto out;
 287     fd = *(int *)handle;
 288     UseResFile(fd);
 289     if (ResError() != noErr) goto out;
 290     h = get1namedresource(FOUR_CHAR_CODE('TEXT'), key);
 291     if (h == NULL) goto out;
 292
 293     len = GetHandleSize(h);
 294     if (len + 1 > buflen) goto out;
 295     memcpy(buffer, *h, len);
 296     buffer[len] = '\0';
 297
 298     ReleaseResource(h);
 299     if (ResError() != noErr) goto out;
 300     return buffer;
 301
 302   out:
 303     return NULL;
 304 }
 305
 306 int read_setting_i(void *handle, char const *key, int defvalue) {
 307     int fd;
 308     Handle h;
 309     int value;
 310
 311     if (handle == NULL) goto out;
 312     fd = *(int *)handle;
 313     UseResFile(fd);
 314     if (ResError() != noErr) goto out;
 315     h = get1namedresource(FOUR_CHAR_CODE('Int '), key);
 316     if (h == NULL) goto out;
 317     value = *(int *)*h;
 318     ReleaseResource(h);
 319     if (ResError() != noErr) goto out;
 320     return value;
 321
 322   out:
 323     return defvalue;
 324 }
 325
 326 void close_settings_r(void *handle) {
 327     int fd;
 328
 329     if (handle == NULL) return;
 330     fd = *(int *)handle;
 331     CloseResFile(fd);
 332     if (ResError() != noErr)
 333         fatalbox("Close of saved session failed (%d)", ResError());
 334     safefree(handle);
 335 }
 336
 337 void del_settings(char const *sessionname) {
 338     OSErr error;
 339     FSSpec sessfile;
 340     short sessVRefNum;
 341     long sessDirID;
 342     Str255 psessionname;
 343
 344     error = get_session_dir(kDontCreateFolder, &sessVRefNum, &sessDirID);
 345
 346     c2pstrcpy(psessionname, sessionname);
 347     error = FSMakeFSSpec(sessVRefNum, sessDirID, psessionname, &sessfile);
 348     if (error != noErr) goto out;
 349
 350     error = FSpDelete(&sessfile);
 351     return;
 352   out:
 353     fatalbox("Delete session failed (%d)", error);
 354 }
 355
 356 struct enum_settings_state {
 357     short vRefNum;
 358     long dirID;
 359     int index;
 360 };
 361
 362 void *enum_settings_start(void) {
 363     OSErr error;
 364     struct enum_settings_state *state;
 365
 366     state = safemalloc(sizeof(*state));
 367     error = get_session_dir(kDontCreateFolder, &state->vRefNum, &state->dirID);
 368     if (error != noErr) {
 369         safefree(state);
 370         return NULL;
 371     }
 372     state->index = 1;
 373     return state;
 374 }
 375
 376 char *enum_settings_next(void *handle, char *buffer, int buflen) {
 377     struct enum_settings_state *e = handle;
 378     CInfoPBRec pb;
 379     OSErr error = noErr;
 380     Str255 name;
 381
 382     if (e == NULL) return NULL;
 383     do {
 384         pb.hFileInfo.ioNamePtr = name;
 385         pb.hFileInfo.ioVRefNum = e->vRefNum;
 386         pb.hFileInfo.ioDirID = e->dirID;
 387         pb.hFileInfo.ioFDirIndex = e->index++;
 388         error = PBGetCatInfoSync(&pb);
 389         if (error != noErr) return NULL;
 390     } while (!((pb.hFileInfo.ioFlAttrib & ioDirMask) == 0 &&
 391                pb.hFileInfo.ioFlFndrInfo.fdCreator == PUTTY_CREATOR &&
 392                pb.hFileInfo.ioFlFndrInfo.fdType == SESS_TYPE &&
 393                name[0] < buflen));
 394
 395     p2cstrcpy(buffer, name);
 396     return buffer;
 397 }
 398
 399 void enum_settings_finish(void *handle) {
 400
 401     safefree(handle);
 402 }
 403
 404 #define SEED_SIZE 512
 405
 406 void read_random_seed(noise_consumer_t consumer)
 407 {
 408     short puttyVRefNum;
 409     long puttyDirID;
 410     OSErr error;
 411     char buf[SEED_SIZE];
 412     short refnum;
 413     long count = SEED_SIZE;
 414
 415     if (get_putty_dir(kDontCreateFolder, &puttyVRefNum, &puttyDirID) != noErr)
 416         return;
 417     if (HOpenDF(puttyVRefNum, puttyDirID, "\pPuTTY Random Seed", fsRdPerm,
 418                 &refnum) != noErr)
 419         return;
 420     error = FSRead(refnum, &count, buf);
 421     if (error != noErr && error != eofErr)
 422         return;
 423     (*consumer)(buf, count);
 424     FSClose(refnum);
 425 }
 426
 427 /*
 428  * We don't bother with the usual FSpExchangeFiles dance here because
 429  * it doesn't really matter if the old random seed gets lost.
 430  */
 431 void write_random_seed(void *data, int len)
 432 {
 433     short puttyVRefNum;
 434     long puttyDirID;
 435     OSErr error;
 436     FSSpec dstfile;
 437     short refnum;
 438     long count = len;
 439
 440     if (get_putty_dir(kCreateFolder, &puttyVRefNum, &puttyDirID) != noErr)
 441         return;
 442
 443     error = FSMakeFSSpec(puttyVRefNum, puttyDirID, "\pPuTTY Random Seed",
 444                          &dstfile);
 445     if (error == fnfErr) {
 446         /* Set up standard resources */
 447         FSpCreateResFile(&dstfile, INTERNAL_CREATOR, SEED_TYPE, smRoman);
 448         refnum = FSpOpenResFile(&dstfile, fsWrPerm);
 449         if (ResError() == noErr) {
 450             copy_resource('STR ', -16397);
 451             CloseResFile(refnum);
 452         }
 453     } else if (error != noErr) return;
 454
 455     if (FSpOpenDF(&dstfile, fsWrPerm, &refnum) != noErr) return;
 456     FSWrite(refnum, &count, data);
 457     FSClose(refnum);
 458
 459     return;
 460 }
 461
 462 /*
 463  * Emacs magic:
 464  * Local Variables:
 465  * c-file-style: "simon"
 466  * End:
 467  */