mdw@git.distorted.org.uk Git - pyke/blob - catacomb-python.h

   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 extern PyObject *modname;
 189
 190 #define INSERT(name, ob) do {   \
 191   PyObject *_o = (PyObject *)(ob);                                      \
 192   Py_INCREF(_o);                                                        \
 193   PyModule_AddObject(mod, name, _o);                                    \
 194 } while (0)
 195
 196 #define INSEXC(name, var, base, meth)                                   \
 197   INSERT(name, var = mkexc(mod, base, name, meth))
 198
 199 #define METH(func, doc)                                                 \
 200   { #func, METHNAME(func), METH_VARARGS, doc },
 201 #define KWMETH(func, doc)                                               \
 202   { #func, (PyCFunction)METHNAME(func),                                 \
 203     METH_VARARGS | METH_KEYWORDS, doc },
 204
 205 #define GET(func, doc)                                                  \
 206   { #func, GETSETNAME(get, func), 0, doc },
 207 #define GETSET(func, doc)                                               \
 208   { #func, GETSETNAME(get, func), GETSETNAME(set, func), doc },
 209
 210 #define MEMBER(name, ty, f, doc)                                        \
 211   { #name, ty, offsetof(MEMBERSTRUCT, name), f, doc },
 212
 213 #define MODULES(_)                                                      \
 214   _(util)                                                               \
 215   _(bytestring) _(buffer)                                               \
 216   _(rand) _(algorithms) _(pubkey) _(pgen)                               \
 217   _(mp) _(field) _(ec) _(group)                                         \
 218   _(passphrase) _(share) _(key)
 219 #define DOMODINIT(m) m##_pyinit();
 220 #define DOMODINSERT(m) m##_pyinsert(mod);
 221 #define INIT_MODULES do { MODULES(DOMODINIT) } while (0)
 222 #define INSERT_MODULES do { MODULES(DOMODINSERT) } while (0)
 223
 224 #define DO(m)                                                           \
 225   extern void m##_pyinit(void);                                         \
 226   extern void m##_pyinsert(PyObject *);
 227 MODULES(DO)
 228 #undef DO
 229
 230 #define FREEOBJ(obj)                                                    \
 231   (((PyObject *)(obj))->ob_type->tp_free((PyObject *)(obj)))
 232
 233 #define GEN(func, base)                                                 \
 234   static PyObject *func(void)                                           \
 235   {                                                                     \
 236     PyObject *d = PyDict_New();                                         \
 237     PyObject *o;                                                        \
 238     int i;                                                              \
 239                                                                         \
 240     for (i = 0; g##base##tab[i]; i++) {                                 \
 241       o = gc##base##_pywrap((/*unconst*/ gc##base *)g##base##tab[i]);   \
 242       PyDict_SetItemString(d,                                           \
 243                            (/*unconst*/ char *)g##base##tab[i]->name,   \
 244                            o);                                          \
 245       Py_DECREF(o);                                                     \
 246     }                                                                   \
 247     return (d);                                                         \
 248   }
 249
 250 #define KWLIST (/*unconst*/ char **)kwlist
 251
 252 struct nameval { const char *name; unsigned f; unsigned long value; };
 253 #define CF_SIGNED 1u
 254 extern void setconstants(PyObject *, const struct nameval *);
 255
 256 extern PyObject *mexp_common(PyObject *, PyObject *, size_t,
 257                              PyObject *(*id)(PyObject *),
 258                              int (*fill)(void *, PyObject *,
 259                                          PyObject *, PyObject *),
 260                              PyObject *(*exp)(PyObject *, void *, int),
 261                              void (*drop)(void *));
 262
 263 extern int convulong(PyObject *, void *);
 264 #define DECL_CONVU_(n) extern int convu##n(PyObject *, void *);
 265 DOUINTSZ(DECL_CONVU_)
 266 extern int convmpw(PyObject *, void *);
 267 extern int convuint(PyObject *, void *);
 268 extern int convk64(PyObject *, void *);
 269 extern int convszt(PyObject *, void *);
 270 extern int convbool(PyObject *, void *);
 271 extern PyObject *abstract_pynew(PyTypeObject *, PyObject *, PyObject *);
 272 extern PyObject *getbool(int);
 273 extern PyObject *getulong(unsigned long);
 274 extern PyObject *getk64(kludge64);
 275 extern void *newtype(PyTypeObject *, const PyTypeObject *, const char *);
 276
 277 struct excinfo { PyObject *ty, *val, *tb; };
 278 #define EXCINFO_INIT { 0, 0, 0 }
 279
 280 extern PyObject *mkexc(PyObject *, PyObject *, const char *, PyMethodDef *);
 281 #define INIT_EXCINFO(exc) do {                                          \
 282   struct excinfo *_exc = (exc); _exc->ty = _exc->val = _exc->tb = 0;    \
 283 } while (0)
 284 #define RELEASE_EXCINFO(exc) do {                                       \
 285   struct excinfo *_exc = (exc);                                         \
 286   Py_XDECREF(_exc->ty);  _exc->ty  = 0;                                 \
 287   Py_XDECREF(_exc->val); _exc->val = 0;                                 \
 288   Py_XDECREF(_exc->tb);  _exc->tb  = 0;                                 \
 289 } while (0)
 290 #define STASH_EXCINFO(exc) do {                                         \
 291   struct excinfo *_exc = (exc);                                         \
 292   PyErr_Fetch(&_exc->ty, &_exc->val, &_exc->tb);                        \
 293   PyErr_NormalizeException(&_exc->ty, &_exc->val, &_exc->tb);           \
 294 } while (0)
 295 #define RESTORE_EXCINFO(exc) do {                                       \
 296   struct excinfo *_exc = (exc);                                         \
 297   PyErr_Restore(_exc->ty, _exc->val, _exc->tb);                         \
 298   _exc->ty = _exc->val = _exc->tb = 0;                                  \
 299 } while (0)
 300 extern void report_lost_exception(struct excinfo *, const char *, ...);
 301 extern void report_lost_exception_v(struct excinfo *, const char *, va_list);
 302 extern void stash_exception(struct excinfo *, const char *, ...);
 303 extern void restore_exception(struct excinfo *, const char *, ...);
 304
 305 extern void typeready(PyTypeObject *);
 306 extern PyTypeObject *inittype(PyTypeObject *, PyTypeObject *);
 307 extern void addmethods(const PyMethodDef *);
 308 extern PyMethodDef *donemethods(void);
 309
 310 /*----- Mapping methods ---------------------------------------------------*/
 311
 312 #define GMAP_METH(func, doc) { #func, gmapmeth_##func, METH_VARARGS, doc },
 313 #define GMAP_KWMETH(func, doc)                                          \
 314   { #func, (PyCFunction)gmapmeth_##func, METH_VARARGS|METH_KEYWORDS, doc },
 315 #define GMAP_METHDECL(func, doc)                                        \
 316   extern PyObject *gmapmeth_##func(PyObject *, PyObject *);
 317 #define GMAP_KWMETHDECL(func, doc)                                      \
 318   extern PyObject *gmapmeth_##func(PyObject *, PyObject *, PyObject *);
 319
 320 #define GMAP_DOROMETHODS(METH, KWMETH)                                  \
 321   METH  (has_key,       "D.has_key(KEY) -> BOOL")                       \
 322   METH  (keys,          "D.keys() -> LIST")                             \
 323   METH  (values,        "D.values() -> LIST")                           \
 324   METH  (items,         "D.items() -> LIST")                            \
 325   METH  (iterkeys,      "D.iterkeys() -> ITER")                         \
 326   METH  (itervalues,    "D.itervalues() -> ITER")                       \
 327   METH  (iteritems,     "D.iteritems() -> ITER")                        \
 328   KWMETH(get,           "D.get(KEY, [default = None]) -> VALUE")        \
 329
 330 #define GMAP_DOMETHODS(METH, KWMETH)                                    \
 331   GMAP_DOROMETHODS(METH, KWMETH)                                        \
 332   METH  (clear,         "D.clear()")                                    \
 333   KWMETH(setdefault,    "D.setdefault(K, [default = None]) -> VALUE")   \
 334   KWMETH(pop,           "D.pop(KEY, [default = <error>]) -> VALUE")     \
 335   METH  (popitem,       "D.popitem() -> (KEY, VALUE)")                  \
 336   METH  (update,        "D.update(MAP)")
 337
 338 GMAP_DOMETHODS(GMAP_METHDECL, GMAP_KWMETHDECL)
 339 #define GMAP_ROMETHODS GMAP_DOROMETHODS(GMAP_METH, GMAP_KWMETH)
 340 #define GMAP_METHODS GMAP_DOMETHODS(GMAP_METH, GMAP_KWMETH)
 341 extern Py_ssize_t gmap_pysize(PyObject *);
 342 extern PySequenceMethods gmap_pysequence;
 343 extern PyMethodDef gmap_pymethods[];
 344
 345 /*----- Bytestrings -------------------------------------------------------*/
 346
 347 PyObject *bytestring_pywrap(const void *, size_t);
 348 PyObject *bytestring_pywrapbuf(buf *);
 349
 350 /*----- Multiprecision arithmetic -----------------------------------------*/
 351
 352 typedef struct mp_pyobj {
 353   PyObject_HEAD
 354   mp *x;
 355 } mp_pyobj;
 356
 357 extern PyTypeObject *mp_pytype;
 358 extern PyTypeObject *gf_pytype;
 359 #define MP_X(o) (((mp_pyobj *)(o))->x)
 360 #define MP_PYCHECK(o) PyObject_TypeCheck((o), mp_pytype)
 361 #define GF_PYCHECK(o) PyObject_TypeCheck((o), gf_pytype)
 362
 363 extern mp *mp_frompylong(PyObject *);
 364 extern PyObject *mp_topylong(mp *);
 365 extern mp *tomp(PyObject *);
 366 extern mp *getmp(PyObject *);
 367 extern int convmp(PyObject *, void *);
 368 extern mp *getgf(PyObject *);
 369 extern int convgf(PyObject *, void *);
 370 extern PyObject *mp_pywrap(mp *);
 371 extern PyObject *gf_pywrap(mp *);
 372 extern long mphash(mp *);
 373 extern mp *mp_frompyobject(PyObject *, int);
 374 extern PyObject *mp_topystring(mp *, int,
 375                                const char *, const char *, const char *);
 376 extern int mp_tolong_checked(mp *, long *, int);
 377
 378 /*----- Abstract fields ---------------------------------------------------*/
 379
 380 typedef struct field_pyobj {
 381   PyHeapTypeObject ty;
 382   field *f;
 383 } field_pyobj;
 384
 385 extern PyTypeObject *field_pytype;
 386 extern PyTypeObject *primefield_pytype;
 387 extern PyTypeObject *niceprimefield_pytype;
 388 extern PyTypeObject *binfield_pytype;
 389 extern PyTypeObject *binpolyfield_pytype;
 390 extern PyTypeObject *binnormfield_pytype;
 391 #define FIELD_PYCHECK(o) PyObject_TypeCheck((o), field_pytype)
 392 #define FIELD_F(o) (((field_pyobj *)(o))->f)
 393 extern PyObject *field_pywrap(field *);
 394 extern field *field_copy(field *);
 395
 396 typedef struct fe_pyobj {
 397   PyObject_HEAD
 398   field *f;
 399   mp *x;
 400 } fe_pyobj;
 401
 402 extern PyTypeObject *fe_pytype;
 403 #define FE_PYCHECK(o) PyObject_TypeCheck((o), fe_pytype)
 404 #define FE_F(o) (((fe_pyobj *)(o))->f)
 405 #define FE_FOBJ(o) ((PyObject *)(o)->ob_type)
 406 #define FE_X(o) (((fe_pyobj *)(o))->x)
 407 extern PyObject *fe_pywrap(PyObject *, mp *);
 408
 409 /*----- Elliptic curves ---------------------------------------------------*/
 410
 411 typedef struct eccurve_pyobj {
 412   PyHeapTypeObject ty;
 413   ec_curve *c;
 414   PyObject *fobj;
 415 } eccurve_pyobj;
 416
 417 extern PyTypeObject *eccurve_pytype;
 418 extern PyTypeObject *ecprimecurve_pytype;
 419 extern PyTypeObject *ecprimeprojcurve_pytype;
 420 extern PyTypeObject *ecbincurve_pytype;
 421 extern PyTypeObject *ecbinprojcurve_pytype;
 422 #define ECCURVE_PYCHECK(o) PyObject_TypeCheck((o), eccurve_pytype)
 423 #define ECCURVE_C(o) (((eccurve_pyobj *)(o))->c)
 424 #define ECCURVE_FOBJ(o) (((eccurve_pyobj *)(o))->fobj)
 425 extern PyObject *eccurve_pywrap(PyObject *, ec_curve *);
 426 extern ec_curve *eccurve_copy(ec_curve *);
 427
 428 typedef struct ecpt_pyobj {
 429   PyObject_HEAD
 430   ec_curve *c;
 431   ec p;
 432 } ecpt_pyobj;
 433
 434 extern PyTypeObject *ecpt_pytype, *ecptcurve_pytype;
 435 #define ECPT_PYCHECK(o) PyObject_TypeCheck((o), ecpt_pytype)
 436 #define ECPTCURVE_PYCHECK(o) PyObject_TypeCheck((o), ecptcurve_pytype)
 437 #define ECPT_C(o) (((ecpt_pyobj *)(o))->c)
 438 #define ECPT_COBJ(o) ((PyObject *)(o)->ob_type)
 439 #define ECPT_FOBJ(o) ECCURVE_FOBJ(ECPT_COBJ((o)))
 440 #define ECPT_P(o) (&((ecpt_pyobj *)(o))->p)
 441 extern PyObject *ecpt_pywrap(PyObject *, ec *);
 442 extern PyObject *ecpt_pywrapout(void *, ec *);
 443 extern int toecpt(ec_curve *, ec *, PyObject *);
 444 extern int getecpt(ec_curve *, ec *, PyObject *);
 445 extern void getecptout(ec *, PyObject *);
 446 extern int convecpt(PyObject *, void *);
 447
 448 typedef struct ecinfo_pyobj {
 449   PyObject_HEAD
 450   ec_info ei;
 451   PyObject *cobj;
 452 } ecinfo_pyobj;
 453
 454 extern PyTypeObject *ecinfo_pytype;
 455 #define ECINFO_PYCHECK(o) PyObject_TypeCheck((o), ecinfo_pytype)
 456 #define ECINFO_EI(o) (&((ecinfo_pyobj *)(o))->ei)
 457 #define ECINFO_COBJ(o) (((ecinfo_pyobj *)(o))->cobj)
 458 extern void ecinfo_copy(ec_info *, const ec_info *);
 459 extern PyObject *ecinfo_pywrap(ec_info *);
 460
 461 /*----- Cyclic groups -----------------------------------------------------*/
 462
 463 typedef struct ge_pyobj {
 464   PyObject_HEAD
 465   ge *x;
 466   group *g;
 467 } ge_pyobj;
 468
 469 extern PyTypeObject *ge_pytype;
 470 #define GE_PYCHECK(o) PyObject_TypeCheck((o), ge_pytype)
 471 #define GE_X(o) (((ge_pyobj *)(o))->x)
 472 #define GE_G(o) (((ge_pyobj *)(o))->g)
 473 #define GE_GOBJ(o) ((PyObject *)(group_pyobj *)(o)->ob_type)
 474 extern PyObject *ge_pywrap(PyObject *, ge *);
 475
 476 typedef struct group_pyobj {
 477   PyHeapTypeObject ty;
 478   group *g;
 479 } group_pyobj;
 480
 481 extern PyTypeObject *group_pytype;
 482 #define GROUP_G(o) (((group_pyobj *)(o))->g)
 483 extern PyObject *group_pywrap(group *);
 484 extern group *group_copy(group *);
 485
 486 /*----- Random number generators ------------------------------------------*/
 487
 488 #define f_freeme 1u
 489
 490 typedef struct grand_pyobj {
 491   PyObject_HEAD
 492   unsigned f;
 493   grand *r;
 494 } grand_pyobj;
 495
 496 extern PyTypeObject *grand_pytype;
 497 extern PyObject *rand_pyobj;
 498 #define GRAND_PYCHECK(o) PyObject_TypeCheck((o), grand_pytype)
 499 #define GRAND_F(o) (((grand_pyobj *)(o))->f)
 500 #define GRAND_R(o) (((grand_pyobj *)(o))->r)
 501 extern PyObject *grand_pywrap(grand *, unsigned);
 502 extern int convgrand(PyObject *, void *);
 503
 504 /*----- Symmetric cryptography --------------------------------------------*/
 505
 506 extern PyObject *keysz_pywrap(const octet *);
 507
 508 extern int convgccipher(PyObject *, void *);
 509 extern PyObject *gccipher_pywrap(gccipher *);
 510
 511 typedef struct gchash_pyobj {
 512   PyHeapTypeObject ty;
 513   gchash *ch;
 514 } gchash_pyobj;
 515
 516 extern PyTypeObject *gchash_pytype;
 517 extern PyObject *sha_pyobj, *has160_pyobj;
 518 #define GCHASH_PYCHECK(o) PyObject_TypeCheck((o), gchash_pytype)
 519 #define GCHASH_CH(o) (((gchash_pyobj *)(o))->ch)
 520 extern PyObject *ghash_pywrap(PyObject *, ghash *);
 521 extern int convgchash(PyObject *, void *);
 522 extern int convghash(PyObject *, void *);
 523
 524 extern int convgcmac(PyObject *, void *);
 525
 526 /*----- Key generation ----------------------------------------------------*/
 527
 528 typedef struct pfilt_pyobj {
 529   PyObject_HEAD
 530   pfilt f;
 531   int st;
 532 } pfilt_pyobj;
 533
 534 extern PyTypeObject *pfilt_pytype;
 535 #define PFILT_PYCHECK(o) PyObject_TypeCheck(o, pfilt_pytype)
 536 #define PFILT_F(o) (&((pfilt_pyobj *)(o))->f)
 537 #define PFILT_ST(o) (((pfilt_pyobj *)(o))->st)
 538
 539 typedef struct { pgen_proc *proc; void *ctx; } pgev;
 540 #define PGEV_HEAD PyObject_HEAD pgev pg;
 541
 542 typedef struct pgev_pyobj {
 543   PGEV_HEAD
 544 } pgev_pyobj;
 545
 546 extern PyTypeObject *pgev_pytype;
 547 #define PGEV_PYCHECK(o) PyObject_TypeCheck(o, pgev_pytype)
 548 #define PGEV_PG(o) (&((pgev_pyobj *)(o))->pg)
 549
 550 typedef struct pypgev {
 551   pgev ev;
 552   PyObject *obj;
 553   struct excinfo *exc;
 554 } pypgev;
 555
 556 extern int convpgev(PyObject *, void *);
 557 extern void droppgev(pypgev *);
 558 extern void pgenerr(struct excinfo *exc);
 559
 560 /*----- That's all, folks -------------------------------------------------*/
 561
 562 #ifdef __cplusplus
 563   }
 564 #endif
 565
 566 #endif