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   1 /* -*-c-*-
   2  *
   3  * Definitions for Catacomb bindings
   4  *
   5  * (c) 2004 Straylight/Edgeware
   6  */
   7
   8 /*----- Licensing notice --------------------------------------------------*
   9  *
  10  * This file is part of the Python interface to Catacomb.
  11  *
  12  * Catacomb/Python is free software; you can redistribute it and/or modify
  13  * it under the terms of the GNU General Public License as published by
  14  * the Free Software Foundation; either version 2 of the License, or
  15  * (at your option) any later version.
  16  *
  17  * Catacomb/Python is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  * GNU General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License
  23  * along with Catacomb/Python; if not, write to the Free Software Foundation,
  24  * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  25  */
  26
  27 #ifndef CATACOMB_PYTHON_H
  28 #define CATACOMB_PYTHON_H
  29
  30 #ifdef __cplusplus
  31   extern "C" {
  32 #endif
  33
  34 /*----- Header files ------------------------------------------------------*/
  35
  36 #define PY_SSIZE_T_CLEAN
  37
  38 #include <Python.h>
  39 #include <longintrepr.h>
  40 #include <structmember.h>
  41
  42 #include <mLib/darray.h>
  43 #include <mLib/dstr.h>
  44 #include <mLib/macros.h>
  45 #include <mLib/quis.h>
  46 #include <mLib/unihash.h>
  47
  48 #include <catacomb/buf.h>
  49 #include <catacomb/ct.h>
  50
  51 #include <catacomb/grand.h>
  52 #include <catacomb/rand.h>
  53 #include <catacomb/noise.h>
  54 #include <catacomb/bbs.h>
  55 #include <catacomb/mprand.h>
  56 #include <catacomb/lcrand.h>
  57 #include <catacomb/fibrand.h>
  58 #include <catacomb/dsarand.h>
  59 #include <catacomb/sslprf.h>
  60 #include <catacomb/tlsprf.h>
  61 #include <catacomb/blkc.h>
  62
  63 #include <catacomb/gcipher.h>
  64 #include <catacomb/gaead.h>
  65 #include <catacomb/ghash.h>
  66 #include <catacomb/gmac.h>
  67 #include <catacomb/md5.h>
  68 #include <catacomb/md5-hmac.h>
  69 #include <catacomb/poly1305.h>
  70 #include <catacomb/sha.h>
  71 #include <catacomb/sha-mgf.h>
  72 #include <catacomb/sha-hmac.h>
  73 #include <catacomb/keccak1600.h>
  74 #include <catacomb/sha3.h>
  75
  76 #include <catacomb/mp.h>
  77 #include <catacomb/mpint.h>
  78 #include <catacomb/mpmul.h>
  79 #include <catacomb/mpcrt.h>
  80 #include <catacomb/mpmont.h>
  81 #include <catacomb/mpbarrett.h>
  82 #include <catacomb/mpreduce.h>
  83 #include <catacomb/mp-fibonacci.h>
  84
  85 #include <catacomb/pgen.h>
  86 #include <catacomb/pfilt.h>
  87 #include <catacomb/strongprime.h>
  88 #include <catacomb/limlee.h>
  89 #include <catacomb/dh.h>
  90 #include <catacomb/ptab.h>
  91 #include <catacomb/bintab.h>
  92 #include <catacomb/dsa.h>
  93 #include <catacomb/x25519.h>
  94 #include <catacomb/x448.h>
  95 #include <catacomb/ed25519.h>
  96 #include <catacomb/ed448.h>
  97
  98 #include <catacomb/gf.h>
  99 #include <catacomb/gfreduce.h>
 100 #include <catacomb/gfn.h>
 101
 102 #include <catacomb/field.h>
 103 #include <catacomb/field-guts.h>
 104
 105 #include <catacomb/ec.h>
 106 #include <catacomb/ec-raw.h>
 107 #include <catacomb/ectab.h>
 108
 109 #include <catacomb/group.h>
 110 #include <catacomb/group-guts.h>
 111
 112 #include <catacomb/gdsa.h>
 113 #include <catacomb/gkcdsa.h>
 114 #include <catacomb/rsa.h>
 115
 116 #include <catacomb/key.h>
 117 #include <catacomb/passphrase.h>
 118 #include <catacomb/pixie.h>
 119
 120 #include <catacomb/share.h>
 121 #include <catacomb/gfshare.h>
 122
 123 /*----- Other preliminaries -----------------------------------------------*/
 124
 125 #define GOBBLE_SEMI extern int notexist
 126 #if defined(__GNUC__) && defined(__ELF__)
 127 #  define PRIVATE_SYMBOLS _Pragma("GCC visibility push(hidden)") GOBBLE_SEMI
 128 #  define PUBLIC_SYMBOLS _Pragma("GCC visibility pop") GOBBLE_SEMI
 129 #  define EXPORT __attribute__((__visibility__("default")))
 130 #else
 131 #  define PRIVATE_SYMBOLS GOBBLE_SEMI
 132 #  define PUBLIC_SYMBOLS GOBBLE_SEMI
 133 #  define EXPORT
 134 #endif
 135
 136 PRIVATE_SYMBOLS;
 137
 138 /*----- Utility macros ----------------------------------------------------*/
 139
 140 #define RETURN_OBJ(obj) do { Py_INCREF(obj); return (obj); } while (0)
 141 #define RETURN_NONE RETURN_OBJ(Py_None)
 142 #define RETURN_NOTIMPL RETURN_OBJ(Py_NotImplemented)
 143 #define RETURN_TRUE RETURN_OBJ(Py_True)
 144 #define RETURN_FALSE RETURN_OBJ(Py_False)
 145 #define RETURN_ME RETURN_OBJ(me)
 146
 147 #define EXCERR(exc, str) do {                                           \
 148   PyErr_SetString(exc, str);                                            \
 149   goto end;                                                             \
 150 } while (0)
 151 #define VALERR(str) EXCERR(PyExc_ValueError, str)
 152 #define OVFERR(str) EXCERR(PyExc_OverflowError, str)
 153 #define TYERR(str) EXCERR(PyExc_TypeError, str)
 154 #define IXERR(str) EXCERR(PyExc_IndexError, str)
 155 #define ZDIVERR(str) EXCERR(PyExc_ZeroDivisionError, str)
 156 #define SYSERR(str) EXCERR(PyExc_SystemError, str)
 157 #define NIERR(str) EXCERR(PyExc_NotImplementedError, str)
 158 #define INDEXERR(idx) do {                                              \
 159   PyErr_SetObject(PyExc_KeyError, idx);                                 \
 160   goto end;                                                             \
 161 } while (0)
 162 #define OSERR(name) do {                                                \
 163   PyErr_SetFromErrnoWithFilename(PyExc_OSError, name);                  \
 164   goto end;                                                             \
 165 } while (0)
 166 #define PGENERR(exc) do { pgenerr(exc); goto end; } while (0)
 167
 168 #define CONVFUNC(ty, cty, ext)                                          \
 169   int conv##ty(PyObject *o, void *p)                                    \
 170   {                                                                     \
 171     if (!PyObject_TypeCheck(o, ty##_pytype))                            \
 172       TYERR("wanted a " #ty);                                           \
 173     *(cty *)p = ext(o);                                                 \
 174     return (1);                                                         \
 175   end:                                                                  \
 176     return (0);                                                         \
 177   }
 178
 179 #define root_pytype 0
 180 #define type_pytype &PyType_Type
 181 #define INITTYPE_META(ty, base, meta) do {                              \
 182   ty##_pytype_skel.tp_base = base##_pytype;                             \
 183   ty##_pytype = inittype(&ty##_pytype_skel, meta##_pytype);             \
 184 } while (0)
 185 #define INITTYPE(ty, base) INITTYPE_META(ty, base, type)
 186
 187 extern PyObject *home_module;
 188
 189 #define INSERT(name, ob) do {   \
 190   PyObject *_o = (PyObject *)(ob);                                      \
 191   Py_INCREF(_o);                                                        \
 192   PyModule_AddObject(mod, name, _o);                                    \
 193 } while (0)
 194
 195 #define INSEXC(name, var, base, meth)                                   \
 196   INSERT(name, var = mkexc(mod, base, name, meth))
 197
 198 #define METH(func, doc)                                                 \
 199   { #func, METHNAME(func), METH_VARARGS, doc },
 200 #define KWMETH(func, doc)                                               \
 201   { #func, (PyCFunction)METHNAME(func),                                 \
 202     METH_VARARGS | METH_KEYWORDS, doc },
 203
 204 #define GET(func, doc)                                                  \
 205   { #func, GETSETNAME(get, func), 0, doc },
 206 #define GETSET(func, doc)                                               \
 207   { #func, GETSETNAME(get, func), GETSETNAME(set, func), doc },
 208
 209 #define MEMBER(name, ty, f, doc)                                        \
 210   { #name, ty, offsetof(MEMBERSTRUCT, name), f, doc },
 211
 212 #define MODULES(_)                                                      \
 213   _(util)                                                               \
 214   _(bytestring) _(buffer)                                               \
 215   _(rand) _(algorithms) _(pubkey) _(pgen)                               \
 216   _(mp) _(field) _(ec) _(group)                                         \
 217   _(passphrase) _(share) _(key)
 218 #define DOMODINIT(m) m##_pyinit();
 219 #define DOMODINSERT(m) m##_pyinsert(mod);
 220 #define INIT_MODULES do { MODULES(DOMODINIT) } while (0)
 221 #define INSERT_MODULES do { MODULES(DOMODINSERT) } while (0)
 222
 223 #define DO(m)                                                           \
 224   extern void m##_pyinit(void);                                         \
 225   extern void m##_pyinsert(PyObject *);
 226 MODULES(DO)
 227 #undef DO
 228
 229 #define FREEOBJ(obj)                                                    \
 230   (((PyObject *)(obj))->ob_type->tp_free((PyObject *)(obj)))
 231
 232 #define GEN(func, base)                                                 \
 233   static PyObject *func(void)                                           \
 234   {                                                                     \
 235     PyObject *d = PyDict_New();                                         \
 236     PyObject *o;                                                        \
 237     int i;                                                              \
 238                                                                         \
 239     for (i = 0; g##base##tab[i]; i++) {                                 \
 240       o = gc##base##_pywrap((/*unconst*/ gc##base *)g##base##tab[i]);   \
 241       PyDict_SetItemString(d,                                           \
 242                            (/*unconst*/ char *)g##base##tab[i]->name,   \
 243                            o);                                          \
 244       Py_DECREF(o);                                                     \
 245     }                                                                   \
 246     return (d);                                                         \
 247   }
 248
 249 #define KWLIST (/*unconst*/ char **)kwlist
 250
 251 struct nameval { const char *name; unsigned f; unsigned long value; };
 252 #define CF_SIGNED 1u
 253 extern void setconstants(PyObject *, const struct nameval *);
 254
 255 extern PyObject *mexp_common(PyObject *, PyObject *, size_t,
 256                              PyObject *(*id)(PyObject *),
 257                              int (*fill)(void *, PyObject *,
 258                                          PyObject *, PyObject *),
 259                              PyObject *(*exp)(PyObject *, void *, int),
 260                              void (*drop)(void *));
 261
 262 extern int convulong(PyObject *, void *);
 263 #define DECL_CONVU_(n) extern int convu##n(PyObject *, void *);
 264 DOUINTSZ(DECL_CONVU_)
 265 extern int convmpw(PyObject *, void *);
 266 extern int convuint(PyObject *, void *);
 267 extern int convk64(PyObject *, void *);
 268 extern int convszt(PyObject *, void *);
 269 extern int convbool(PyObject *, void *);
 270 extern PyObject *abstract_pynew(PyTypeObject *, PyObject *, PyObject *);
 271 extern PyObject *getbool(int);
 272 extern PyObject *getulong(unsigned long);
 273 extern PyObject *getk64(kludge64);
 274 extern void *newtype(PyTypeObject *, const PyTypeObject *, const char *);
 275
 276 struct excinfo { PyObject *ty, *val, *tb; };
 277 #define EXCINFO_INIT { 0, 0, 0 }
 278
 279 extern PyObject *mkexc(PyObject *, PyObject *, const char *, PyMethodDef *);
 280 #define INIT_EXCINFO(exc) do {                                          \
 281   struct excinfo *_exc = (exc); _exc->ty = _exc->val = _exc->tb = 0;    \
 282 } while (0)
 283 #define RELEASE_EXCINFO(exc) do {                                       \
 284   struct excinfo *_exc = (exc);                                         \
 285   Py_XDECREF(_exc->ty);  _exc->ty  = 0;                                 \
 286   Py_XDECREF(_exc->val); _exc->val = 0;                                 \
 287   Py_XDECREF(_exc->tb);  _exc->tb  = 0;                                 \
 288 } while (0)
 289 #define STASH_EXCINFO(exc) do {                                         \
 290   struct excinfo *_exc = (exc);                                         \
 291   PyErr_Fetch(&_exc->ty, &_exc->val, &_exc->tb);                        \
 292   PyErr_NormalizeException(&_exc->ty, &_exc->val, &_exc->tb);           \
 293 } while (0)
 294 #define RESTORE_EXCINFO(exc) do {                                       \
 295   struct excinfo *_exc = (exc);                                         \
 296   PyErr_Restore(_exc->ty, _exc->val, _exc->tb);                         \
 297   _exc->ty = _exc->val = _exc->tb = 0;                                  \
 298 } while (0)
 299 extern void report_lost_exception(struct excinfo *, const char *, ...);
 300 extern void report_lost_exception_v(struct excinfo *, const char *, va_list);
 301 extern void stash_exception(struct excinfo *, const char *, ...);
 302 extern void restore_exception(struct excinfo *, const char *, ...);
 303
 304 extern void typeready(PyTypeObject *);
 305 extern PyTypeObject *inittype(PyTypeObject *, PyTypeObject *);
 306 extern void addmethods(const PyMethodDef *);
 307 extern PyMethodDef *donemethods(void);
 308
 309 /*----- Mapping methods ---------------------------------------------------*/
 310
 311 #define GMAP_METH(func, doc) { #func, gmapmeth_##func, METH_VARARGS, doc },
 312 #define GMAP_KWMETH(func, doc)                                          \
 313   { #func, (PyCFunction)gmapmeth_##func, METH_VARARGS|METH_KEYWORDS, doc },
 314 #define GMAP_METHDECL(func, doc)                                        \
 315   extern PyObject *gmapmeth_##func(PyObject *, PyObject *);
 316 #define GMAP_KWMETHDECL(func, doc)                                      \
 317   extern PyObject *gmapmeth_##func(PyObject *, PyObject *, PyObject *);
 318
 319 #define GMAP_DOROMETHODS(METH, KWMETH)                                  \
 320   METH  (has_key,       "D.has_key(KEY) -> BOOL")                       \
 321   METH  (keys,          "D.keys() -> LIST")                             \
 322   METH  (values,        "D.values() -> LIST")                           \
 323   METH  (items,         "D.items() -> LIST")                            \
 324   METH  (iterkeys,      "D.iterkeys() -> ITER")                         \
 325   METH  (itervalues,    "D.itervalues() -> ITER")                       \
 326   METH  (iteritems,     "D.iteritems() -> ITER")                        \
 327   KWMETH(get,           "D.get(KEY, [default = None]) -> VALUE")        \
 328
 329 #define GMAP_DOMETHODS(METH, KWMETH)                                    \
 330   GMAP_DOROMETHODS(METH, KWMETH)                                        \
 331   METH  (clear,         "D.clear()")                                    \
 332   KWMETH(setdefault,    "D.setdefault(K, [default = None]) -> VALUE")   \
 333   KWMETH(pop,           "D.pop(KEY, [default = <error>]) -> VALUE")     \
 334   METH  (popitem,       "D.popitem() -> (KEY, VALUE)")                  \
 335   METH  (update,        "D.update(MAP)")
 336
 337 GMAP_DOMETHODS(GMAP_METHDECL, GMAP_KWMETHDECL)
 338 #define GMAP_ROMETHODS GMAP_DOROMETHODS(GMAP_METH, GMAP_KWMETH)
 339 #define GMAP_METHODS GMAP_DOMETHODS(GMAP_METH, GMAP_KWMETH)
 340 extern Py_ssize_t gmap_pysize(PyObject *);
 341 extern PySequenceMethods gmap_pysequence;
 342 extern PyMethodDef gmap_pymethods[];
 343
 344 /*----- Bytestrings -------------------------------------------------------*/
 345
 346 PyObject *bytestring_pywrap(const void *, size_t);
 347 PyObject *bytestring_pywrapbuf(buf *);
 348
 349 /*----- Multiprecision arithmetic -----------------------------------------*/
 350
 351 typedef struct mp_pyobj {
 352   PyObject_HEAD
 353   mp *x;
 354 } mp_pyobj;
 355
 356 extern PyTypeObject *mp_pytype;
 357 extern PyTypeObject *gf_pytype;
 358 #define MP_X(o) (((mp_pyobj *)(o))->x)
 359 #define MP_PYCHECK(o) PyObject_TypeCheck((o), mp_pytype)
 360 #define GF_PYCHECK(o) PyObject_TypeCheck((o), gf_pytype)
 361
 362 extern mp *mp_frompylong(PyObject *);
 363 extern PyObject *mp_topylong(mp *);
 364 extern mp *tomp(PyObject *);
 365 extern mp *getmp(PyObject *);
 366 extern int convmp(PyObject *, void *);
 367 extern mp *getgf(PyObject *);
 368 extern int convgf(PyObject *, void *);
 369 extern PyObject *mp_pywrap(mp *);
 370 extern PyObject *gf_pywrap(mp *);
 371 extern long mphash(mp *);
 372 extern mp *mp_frompyobject(PyObject *, int);
 373 extern PyObject *mp_topystring(mp *, int,
 374                                const char *, const char *, const char *);
 375 extern int mp_tolong_checked(mp *, long *, int);
 376
 377 /*----- Abstract fields ---------------------------------------------------*/
 378
 379 typedef struct field_pyobj {
 380   PyHeapTypeObject ty;
 381   field *f;
 382 } field_pyobj;
 383
 384 extern PyTypeObject *field_pytype;
 385 extern PyTypeObject *primefield_pytype;
 386 extern PyTypeObject *niceprimefield_pytype;
 387 extern PyTypeObject *binfield_pytype;
 388 extern PyTypeObject *binpolyfield_pytype;
 389 extern PyTypeObject *binnormfield_pytype;
 390 #define FIELD_PYCHECK(o) PyObject_TypeCheck((o), field_pytype)
 391 #define FIELD_F(o) (((field_pyobj *)(o))->f)
 392 extern PyObject *field_pywrap(field *);
 393 extern field *field_copy(field *);
 394
 395 typedef struct fe_pyobj {
 396   PyObject_HEAD
 397   field *f;
 398   mp *x;
 399 } fe_pyobj;
 400
 401 extern PyTypeObject *fe_pytype;
 402 #define FE_PYCHECK(o) PyObject_TypeCheck((o), fe_pytype)
 403 #define FE_F(o) (((fe_pyobj *)(o))->f)
 404 #define FE_FOBJ(o) ((PyObject *)(o)->ob_type)
 405 #define FE_X(o) (((fe_pyobj *)(o))->x)
 406 extern PyObject *fe_pywrap(PyObject *, mp *);
 407
 408 /*----- Elliptic curves ---------------------------------------------------*/
 409
 410 typedef struct eccurve_pyobj {
 411   PyHeapTypeObject ty;
 412   ec_curve *c;
 413   PyObject *fobj;
 414 } eccurve_pyobj;
 415
 416 extern PyTypeObject *eccurve_pytype;
 417 extern PyTypeObject *ecprimecurve_pytype;
 418 extern PyTypeObject *ecprimeprojcurve_pytype;
 419 extern PyTypeObject *ecbincurve_pytype;
 420 extern PyTypeObject *ecbinprojcurve_pytype;
 421 #define ECCURVE_PYCHECK(o) PyObject_TypeCheck((o), eccurve_pytype)
 422 #define ECCURVE_C(o) (((eccurve_pyobj *)(o))->c)
 423 #define ECCURVE_FOBJ(o) (((eccurve_pyobj *)(o))->fobj)
 424 extern PyObject *eccurve_pywrap(PyObject *, ec_curve *);
 425 extern ec_curve *eccurve_copy(ec_curve *);
 426
 427 typedef struct ecpt_pyobj {
 428   PyObject_HEAD
 429   ec_curve *c;
 430   ec p;
 431 } ecpt_pyobj;
 432
 433 extern PyTypeObject *ecpt_pytype, *ecptcurve_pytype;
 434 #define ECPT_PYCHECK(o) PyObject_TypeCheck((o), ecpt_pytype)
 435 #define ECPTCURVE_PYCHECK(o) PyObject_TypeCheck((o), ecptcurve_pytype)
 436 #define ECPT_C(o) (((ecpt_pyobj *)(o))->c)
 437 #define ECPT_COBJ(o) ((PyObject *)(o)->ob_type)
 438 #define ECPT_FOBJ(o) ECCURVE_FOBJ(ECPT_COBJ((o)))
 439 #define ECPT_P(o) (&((ecpt_pyobj *)(o))->p)
 440 extern PyObject *ecpt_pywrap(PyObject *, ec *);
 441 extern PyObject *ecpt_pywrapout(void *, ec *);
 442 extern int toecpt(ec_curve *, ec *, PyObject *);
 443 extern int getecpt(ec_curve *, ec *, PyObject *);
 444 extern void getecptout(ec *, PyObject *);
 445 extern int convecpt(PyObject *, void *);
 446
 447 typedef struct ecinfo_pyobj {
 448   PyObject_HEAD
 449   ec_info ei;
 450   PyObject *cobj;
 451 } ecinfo_pyobj;
 452
 453 extern PyTypeObject *ecinfo_pytype;
 454 #define ECINFO_PYCHECK(o) PyObject_TypeCheck((o), ecinfo_pytype)
 455 #define ECINFO_EI(o) (&((ecinfo_pyobj *)(o))->ei)
 456 #define ECINFO_COBJ(o) (((ecinfo_pyobj *)(o))->cobj)
 457 extern void ecinfo_copy(ec_info *, const ec_info *);
 458 extern PyObject *ecinfo_pywrap(ec_info *);
 459
 460 /*----- Cyclic groups -----------------------------------------------------*/
 461
 462 typedef struct ge_pyobj {
 463   PyObject_HEAD
 464   ge *x;
 465   group *g;
 466 } ge_pyobj;
 467
 468 extern PyTypeObject *ge_pytype;
 469 #define GE_PYCHECK(o) PyObject_TypeCheck((o), ge_pytype)
 470 #define GE_X(o) (((ge_pyobj *)(o))->x)
 471 #define GE_G(o) (((ge_pyobj *)(o))->g)
 472 #define GE_GOBJ(o) ((PyObject *)(group_pyobj *)(o)->ob_type)
 473 extern PyObject *ge_pywrap(PyObject *, ge *);
 474
 475 typedef struct group_pyobj {
 476   PyHeapTypeObject ty;
 477   group *g;
 478 } group_pyobj;
 479
 480 extern PyTypeObject *group_pytype;
 481 #define GROUP_G(o) (((group_pyobj *)(o))->g)
 482 extern PyObject *group_pywrap(group *);
 483 extern group *group_copy(group *);
 484
 485 /*----- Random number generators ------------------------------------------*/
 486
 487 #define f_freeme 1u
 488
 489 typedef struct grand_pyobj {
 490   PyObject_HEAD
 491   unsigned f;
 492   grand *r;
 493 } grand_pyobj;
 494
 495 extern PyTypeObject *grand_pytype;
 496 extern PyObject *rand_pyobj;
 497 #define GRAND_PYCHECK(o) PyObject_TypeCheck((o), grand_pytype)
 498 #define GRAND_F(o) (((grand_pyobj *)(o))->f)
 499 #define GRAND_R(o) (((grand_pyobj *)(o))->r)
 500 extern PyObject *grand_pywrap(grand *, unsigned);
 501 extern int convgrand(PyObject *, void *);
 502
 503 /*----- Symmetric cryptography --------------------------------------------*/
 504
 505 extern PyObject *keysz_pywrap(const octet *);
 506
 507 extern int convgccipher(PyObject *, void *);
 508 extern PyObject *gccipher_pywrap(gccipher *);
 509
 510 typedef struct gchash_pyobj {
 511   PyHeapTypeObject ty;
 512   gchash *ch;
 513 } gchash_pyobj;
 514
 515 extern PyTypeObject *gchash_pytype;
 516 extern PyObject *sha_pyobj, *has160_pyobj;
 517 #define GCHASH_PYCHECK(o) PyObject_TypeCheck((o), gchash_pytype)
 518 #define GCHASH_CH(o) (((gchash_pyobj *)(o))->ch)
 519 extern PyObject *ghash_pywrap(PyObject *, ghash *);
 520 extern int convgchash(PyObject *, void *);
 521 extern int convghash(PyObject *, void *);
 522
 523 extern int convgcmac(PyObject *, void *);
 524
 525 /*----- Key generation ----------------------------------------------------*/
 526
 527 typedef struct pfilt_pyobj {
 528   PyObject_HEAD
 529   pfilt f;
 530   int st;
 531 } pfilt_pyobj;
 532
 533 extern PyTypeObject *pfilt_pytype;
 534 #define PFILT_PYCHECK(o) PyObject_TypeCheck(o, pfilt_pytype)
 535 #define PFILT_F(o) (&((pfilt_pyobj *)(o))->f)
 536 #define PFILT_ST(o) (((pfilt_pyobj *)(o))->st)
 537
 538 typedef struct { pgen_proc *proc; void *ctx; } pgev;
 539 #define PGEV_HEAD PyObject_HEAD pgev pg;
 540
 541 typedef struct pgev_pyobj {
 542   PGEV_HEAD
 543 } pgev_pyobj;
 544
 545 extern PyTypeObject *pgev_pytype;
 546 #define PGEV_PYCHECK(o) PyObject_TypeCheck(o, pgev_pytype)
 547 #define PGEV_PG(o) (&((pgev_pyobj *)(o))->pg)
 548
 549 typedef struct pypgev {
 550   pgev ev;
 551   PyObject *obj;
 552   struct excinfo *exc;
 553 } pypgev;
 554
 555 extern int convpgev(PyObject *, void *);
 556 extern void droppgev(pypgev *);
 557 extern void pgenerr(struct excinfo *exc);
 558
 559 /*----- That's all, folks -------------------------------------------------*/
 560
 561 #ifdef __cplusplus
 562   }
 563 #endif
 564
 565 #endif