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1 | /* -*-c-*- |
2 | * |
3 | * $Id$ |
4 | * |
5 | * Where the fun begins |
6 | * |
7 | * (c) 2004 Straylight/Edgeware |
8 | */ |
9 | |
10 | /*----- Licensing notice --------------------------------------------------* |
11 | * |
12 | * This file is part of the Python interface to Catacomb. |
13 | * |
14 | * Catacomb/Python is free software; you can redistribute it and/or modify |
15 | * it under the terms of the GNU General Public License as published by |
16 | * the Free Software Foundation; either version 2 of the License, or |
17 | * (at your option) any later version. |
18 | * |
19 | * Catacomb/Python is distributed in the hope that it will be useful, |
20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
22 | * GNU General Public License for more details. |
23 | * |
24 | * You should have received a copy of the GNU General Public License |
25 | * along with Catacomb/Python; if not, write to the Free Software Foundation, |
26 | * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
27 | */ |
28 | |
29 | /*----- Header files ------------------------------------------------------*/ |
30 | |
31 | #include "catacomb-python.h" |
32 | |
33 | /*----- Main code ---------------------------------------------------------*/ |
34 | |
35 | static void setconstants(PyObject *mod) |
36 | { |
37 | static const struct { const char *name; unsigned long value; } consts[] = { |
38 | #define C(x) { #x, x } |
39 | C(FTY_PRIME), C(FTY_BINARY), |
40 | C(PGEN_PASS), C(PGEN_FAIL), C(PGEN_BEGIN), C(PGEN_TRY), C(PGEN_DONE), |
41 | C(PGEN_ABORT), |
42 | C(MPW_MAX), |
43 | C(PMODE_READ), C(PMODE_VERIFY), |
44 | #undef C |
45 | { 0 } |
46 | }; |
47 | int i; |
48 | PyObject *x; |
49 | |
50 | for (i = 0; consts[i].name; i++) { |
51 | if (consts[i].value > LONG_MAX) |
52 | x = PyLong_FromUnsignedLong(consts[i].value); |
53 | else |
54 | x = PyInt_FromLong(consts[i].value); |
55 | PyModule_AddObject(mod, (/*unconst*/ char *)consts[i].name, x); |
56 | } |
57 | } |
58 | |
59 | PyObject *getu32(uint32 w) |
60 | { |
61 | if (w <= 0x7fffffff) |
62 | return (PyInt_FromLong(w)); |
63 | else |
64 | return (PyLong_FromUnsignedLong(w)); |
65 | } |
66 | |
67 | PyObject *getbool(int b) |
68 | { |
69 | if (b) RETURN_TRUE; |
70 | else RETURN_FALSE; |
71 | } |
72 | |
73 | PyObject *abstract_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw) |
74 | { |
75 | PyErr_SetString(PyExc_TypeError, "can't instantiate this class"); |
76 | return (0); |
77 | } |
78 | |
79 | int convulong(PyObject *o, void *pp) |
80 | { |
81 | long i; |
82 | unsigned long *p = pp; |
83 | PyObject *t; |
84 | |
85 | if (PyInt_Check(o)) { |
86 | i = PyInt_AS_LONG(o); |
87 | if (i < 0) TYERR("must be nonnegative"); |
88 | *p = i; |
89 | } else { |
90 | if ((t = PyNumber_Long(o)) == 0) goto end; |
91 | *p = PyLong_AsUnsignedLong(t); |
92 | Py_DECREF(t); |
93 | if (PyErr_Occurred()) goto end; |
94 | } |
95 | return (1); |
96 | end: |
97 | return (0); |
98 | } |
99 | |
100 | int convu32(PyObject *o, void *pp) |
101 | { |
102 | unsigned long u; |
103 | uint32 *p = pp; |
104 | |
105 | if (!convulong(o, &u)) goto end; |
106 | if (u > 0xffffffff) TYERR("out of range"); |
107 | *p = u; |
108 | return (1); |
109 | end: |
110 | return (0); |
111 | } |
112 | |
113 | int convuint(PyObject *o, void *pp) |
114 | { |
115 | unsigned long u; |
116 | unsigned *p = pp; |
117 | |
118 | if (!convulong(o, &u)) goto end; |
119 | if (u > UINT_MAX) TYERR("out of range"); |
120 | *p = u; |
121 | return (1); |
122 | end: |
123 | return (0); |
124 | } |
125 | |
126 | int convmpw(PyObject *o, void *pp) |
127 | { |
128 | unsigned long u; |
129 | unsigned *p = pp; |
130 | |
131 | if (!convulong(o, &u)) goto end; |
132 | if (u > MPW_MAX) TYERR("out of range"); |
133 | *p = u; |
134 | return (1); |
135 | end: |
136 | return (0); |
137 | } |
138 | |
139 | int convszt(PyObject *o, void *pp) |
140 | { |
141 | unsigned long u; |
142 | size_t *p = pp; |
143 | |
144 | if (!convulong(o, &u)) goto end; |
145 | if (u > ~(size_t)0) TYERR("out of range"); |
146 | *p = u; |
147 | return (1); |
148 | end: |
149 | return (0); |
150 | } |
151 | |
152 | int convbool(PyObject *o, void *pp) |
153 | { |
154 | *(int *)pp = PyObject_IsTrue(o); |
155 | return (1); |
156 | } |
157 | |
158 | PyObject *mexp_common(PyObject *me, PyObject *arg, |
159 | size_t efsz, |
160 | PyObject *(*id)(PyObject *), |
161 | int (*fill)(void *, PyObject *, |
162 | PyObject *, PyObject *), |
163 | PyObject *(*exp)(PyObject *, void *, int), |
164 | void (*drop)(void *)) |
165 | { |
166 | int i = 0, j, n, flat; |
167 | PyObject *qq, *x, *y, *z = 0; |
168 | char *v = 0, *vv; |
169 | |
170 | if (PyTuple_Size(arg) == 1) |
171 | arg = PyTuple_GetItem(arg, 0); |
172 | Py_INCREF(arg); |
173 | if (!PySequence_Check(arg)) TYERR("not a sequence"); |
174 | n = PySequence_Size(arg); if (!n) { z = id(me); goto end; } |
175 | x = PySequence_GetItem(arg, 0); |
176 | if (PySequence_Check(x)) |
177 | flat = 0; |
178 | else { |
179 | if (n % 2) VALERR("must have even number of arguments"); |
180 | n /= 2; |
181 | flat = 1; |
182 | } |
183 | Py_DECREF(x); |
184 | |
185 | v = xmalloc(n * efsz); |
186 | for (i = j = 0, vv = v; i < n; i++, vv += efsz) { |
187 | if (flat) { |
188 | x = PySequence_GetItem(arg, j++); |
189 | y = PySequence_GetItem(arg, j++); |
190 | } else { |
191 | qq = PySequence_GetItem(arg, j++); |
192 | if (!qq) goto end; |
193 | if (!PySequence_Check(qq) || PySequence_Size(qq) != 2) { |
194 | Py_DECREF(qq); |
195 | TYERR("want a sequence of pairs"); |
196 | } |
197 | x = PySequence_GetItem(qq, 0); |
198 | y = PySequence_GetItem(qq, 1); |
199 | Py_DECREF(qq); |
200 | } |
201 | if (!x || !y) goto end; |
202 | if (fill(vv, me, x, y)) { |
203 | Py_DECREF(x); |
204 | Py_DECREF(y); |
205 | if (!PyErr_Occurred()) |
206 | PyErr_SetString(PyExc_TypeError, "type mismatch"); |
207 | goto end; |
208 | } |
209 | Py_DECREF(x); |
210 | Py_DECREF(y); |
211 | } |
212 | z = exp(me, v, n); |
213 | |
214 | end: |
215 | if (v) { |
216 | for (j = 0, vv = v; j < i; j++, vv += efsz) |
217 | drop(vv); |
218 | xfree(v); |
219 | } |
220 | Py_DECREF(arg); |
221 | return (z); |
222 | } |
223 | |
224 | DA_DECL(method_v, PyMethodDef); |
225 | static method_v global_pymethods = DA_INIT; |
226 | void addmethods(const PyMethodDef *m) |
227 | { |
228 | size_t n; |
229 | |
230 | for (n = 0; m[n].ml_name; n++); |
231 | DA_ENSURE(&global_pymethods, n); |
232 | memcpy(DA(&global_pymethods) + DA_LEN(&global_pymethods), |
233 | m, n * sizeof(*m)); |
234 | DA_EXTEND(&global_pymethods, n); |
235 | } |
236 | |
237 | static const PyTypeObject emptytype = { 0 }; |
238 | |
f0526039 |
239 | void *newtype(PyTypeObject *metaty, |
240 | const PyTypeObject *skel, |
241 | const char *name) |
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242 | { |
f0526039 |
243 | PyHeapTypeObject *ty = |
244 | (PyHeapTypeObject *)_PyObject_GC_Malloc(_PyObject_VAR_SIZE(metaty, 0)); |
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245 | if (!skel) skel = &emptytype; |
246 | memcpy(ty, skel, sizeof(*skel)); |
f0526039 |
247 | if (ty->type.tp_base) Py_INCREF(ty->type.tp_base); |
248 | #define COPY(blah) do { \ |
249 | if (ty->type.tp_as_##blah) { \ |
250 | memcpy(&ty->as_##blah, \ |
251 | ty->type.tp_as_##blah, \ |
252 | sizeof(ty->as_##blah)); \ |
253 | ty->type.tp_as_##blah = &ty->as_##blah; \ |
254 | } \ |
255 | } while (0) |
256 | COPY(number); |
257 | COPY(sequence); |
258 | COPY(mapping); |
259 | COPY(buffer); |
260 | #undef COPY |
261 | if (name) |
262 | ty->name = PyString_FromString(name); |
263 | else if (ty->type.tp_name) |
264 | ty->name = PyString_FromString(ty->type.tp_name); |
265 | if (ty->name) |
266 | ty->type.tp_name = PyString_AS_STRING(ty->name); |
267 | PyObject_INIT(&ty->type, metaty); |
b6a86d2e |
268 | Py_INCREF(metaty); |
269 | return (ty); |
270 | } |
271 | |
272 | static PyObject *smallprimes(void) |
273 | { |
274 | PyObject *v = PyList_New(NPRIME); |
275 | int i; |
276 | |
277 | for (i = 0; i < NPRIME; i++) |
278 | PyList_SetItem(v, i, PyInt_FromLong(primetab[i])); |
279 | return (v); |
280 | } |
281 | |
282 | PyTypeObject *inittype(PyTypeObject *tyskel) |
283 | { |
f0526039 |
284 | PyTypeObject *ty = newtype(&PyType_Type, tyskel, 0); |
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285 | ty->tp_flags |= Py_TPFLAGS_HEAPTYPE; |
286 | PyType_Ready(ty); |
287 | return (ty); |
288 | } |
289 | |
290 | void init_base(void) { |
291 | static const PyMethodDef mzero = { 0 }; |
292 | PyObject *mod; |
293 | INIT_MODULES; |
294 | DA_PUSH(&global_pymethods, mzero); |
295 | mod = Py_InitModule("catacomb._base", DA(&global_pymethods)); |
296 | INSERT_MODULES; |
297 | INSERT("smallprimes", smallprimes()); |
298 | setconstants(mod); |
299 | } |
300 | |
301 | /*----- That's all, folks -------------------------------------------------*/ |