1 /*
2 +----------------------------------------------------------------------+
3 | PHP Version 7 |
4 +----------------------------------------------------------------------+
5 | Copyright (c) 1997-2018 The PHP Group |
6 +----------------------------------------------------------------------+
7 | This source file is subject to version 3.01 of the PHP license, |
8 | that is bundled with this package in the file LICENSE, and is |
9 | available through the world-wide-web at the following url: |
10 | http://www.php.net/license/3_01.txt |
11 | If you did not receive a copy of the PHP license and are unable to |
12 | obtain it through the world-wide-web, please send a note to |
13 | license@php.net so we can mail you a copy immediately. |
14 +----------------------------------------------------------------------+
15 | Author: Stanislav Malyshev <stas@php.net> |
16 +----------------------------------------------------------------------+
17 */
18
19 #ifdef HAVE_CONFIG_H
20 #include "config.h"
21 #endif
22
23 #include "php.h"
24 #include "php_ini.h"
25 #include "php_gmp.h"
26 #include "ext/standard/info.h"
27 #include "ext/standard/php_var.h"
28 #include "zend_smart_str_public.h"
29 #include "zend_exceptions.h"
30
31 #if HAVE_GMP
32
33 #include <gmp.h>
34
35 /* Needed for gmp_random() */
36 #include "ext/standard/php_rand.h"
37 #include "ext/standard/php_lcg.h"
38 #define GMP_ABS(x) ((x) >= 0 ? (x) : -(x))
39
40 /* {{{ arginfo */
41 ZEND_BEGIN_ARG_INFO_EX(arginfo_gmp_init, 0, 0, 1)
42 ZEND_ARG_INFO(0, number)
43 ZEND_ARG_INFO(0, base)
44 ZEND_END_ARG_INFO()
45
46 ZEND_BEGIN_ARG_INFO_EX(arginfo_gmp_import, 0, 0, 1)
47 ZEND_ARG_INFO(0, data)
48 ZEND_ARG_INFO(0, word_size)
49 ZEND_ARG_INFO(0, options)
50 ZEND_END_ARG_INFO()
51
52 ZEND_BEGIN_ARG_INFO_EX(arginfo_gmp_export, 0, 0, 1)
53 ZEND_ARG_INFO(0, gmpnumber)
54 ZEND_ARG_INFO(0, word_size)
55 ZEND_ARG_INFO(0, options)
56 ZEND_END_ARG_INFO()
57
58 ZEND_BEGIN_ARG_INFO_EX(arginfo_gmp_intval, 0, 0, 1)
59 ZEND_ARG_INFO(0, gmpnumber)
60 ZEND_END_ARG_INFO()
61
62 ZEND_BEGIN_ARG_INFO_EX(arginfo_gmp_strval, 0, 0, 1)
63 ZEND_ARG_INFO(0, gmpnumber)
64 ZEND_ARG_INFO(0, base)
65 ZEND_END_ARG_INFO()
66
67 ZEND_BEGIN_ARG_INFO_EX(arginfo_gmp_unary, 0, 0, 1)
68 ZEND_ARG_INFO(0, a)
69 ZEND_END_ARG_INFO()
70
71 ZEND_BEGIN_ARG_INFO_EX(arginfo_gmp_binary, 0, 0, 2)
72 ZEND_ARG_INFO(0, a)
73 ZEND_ARG_INFO(0, b)
74 ZEND_END_ARG_INFO()
75
76 ZEND_BEGIN_ARG_INFO_EX(arginfo_gmp_div, 0, 0, 2)
77 ZEND_ARG_INFO(0, a)
78 ZEND_ARG_INFO(0, b)
79 ZEND_ARG_INFO(0, round)
80 ZEND_END_ARG_INFO()
81
82 ZEND_BEGIN_ARG_INFO_EX(arginfo_gmp_pow, 0, 0, 2)
83 ZEND_ARG_INFO(0, base)
84 ZEND_ARG_INFO(0, exp)
85 ZEND_END_ARG_INFO()
86
87 ZEND_BEGIN_ARG_INFO_EX(arginfo_gmp_powm, 0, 0, 3)
88 ZEND_ARG_INFO(0, base)
89 ZEND_ARG_INFO(0, exp)
90 ZEND_ARG_INFO(0, mod)
91 ZEND_END_ARG_INFO()
92
93 ZEND_BEGIN_ARG_INFO_EX(arginfo_gmp_root, 0, 0, 2)
94 ZEND_ARG_INFO(0, a)
95 ZEND_ARG_INFO(0, nth)
96 ZEND_END_ARG_INFO()
97
98 ZEND_BEGIN_ARG_INFO_EX(arginfo_gmp_prob_prime, 0, 0, 1)
99 ZEND_ARG_INFO(0, a)
100 ZEND_ARG_INFO(0, reps)
101 ZEND_END_ARG_INFO()
102
103 ZEND_BEGIN_ARG_INFO_EX(arginfo_gmp_random, 0, 0, 0)
104 ZEND_ARG_INFO(0, limiter)
105 ZEND_END_ARG_INFO()
106
107 ZEND_BEGIN_ARG_INFO_EX(arginfo_gmp_random_seed, 0, 0, 1)
108 ZEND_ARG_INFO(0, seed)
109 ZEND_END_ARG_INFO()
110
111 ZEND_BEGIN_ARG_INFO_EX(arginfo_gmp_random_bits, 0, 0, 1)
112 ZEND_ARG_INFO(0, bits)
113 ZEND_END_ARG_INFO()
114
115 ZEND_BEGIN_ARG_INFO_EX(arginfo_gmp_random_range, 0, 0, 2)
116 ZEND_ARG_INFO(0, min)
117 ZEND_ARG_INFO(0, max)
118 ZEND_END_ARG_INFO()
119
120 ZEND_BEGIN_ARG_INFO_EX(arginfo_gmp_setbit, 0, 0, 2)
121 ZEND_ARG_INFO(0, a)
122 ZEND_ARG_INFO(0, index)
123 ZEND_ARG_INFO(0, set_clear)
124 ZEND_END_ARG_INFO()
125
126 ZEND_BEGIN_ARG_INFO_EX(arginfo_gmp_bit, 0, 0, 2)
127 ZEND_ARG_INFO(0, a)
128 ZEND_ARG_INFO(0, index)
129 ZEND_END_ARG_INFO()
130
131 ZEND_BEGIN_ARG_INFO_EX(arginfo_gmp_scan, 0, 0, 2)
132 ZEND_ARG_INFO(0, a)
133 ZEND_ARG_INFO(0, start)
134 ZEND_END_ARG_INFO()
135
136 /* }}} */
137
138 ZEND_DECLARE_MODULE_GLOBALS(gmp)
139 static ZEND_GINIT_FUNCTION(gmp);
140
141 /* {{{ gmp_functions[]
142 */
143 const zend_function_entry gmp_functions[] = {
144 ZEND_FE(gmp_init, arginfo_gmp_init)
145 ZEND_FE(gmp_import, arginfo_gmp_import)
146 ZEND_FE(gmp_export, arginfo_gmp_export)
147 ZEND_FE(gmp_intval, arginfo_gmp_intval)
148 ZEND_FE(gmp_strval, arginfo_gmp_strval)
149 ZEND_FE(gmp_add, arginfo_gmp_binary)
150 ZEND_FE(gmp_sub, arginfo_gmp_binary)
151 ZEND_FE(gmp_mul, arginfo_gmp_binary)
152 ZEND_FE(gmp_div_qr, arginfo_gmp_div)
153 ZEND_FE(gmp_div_q, arginfo_gmp_div)
154 ZEND_FE(gmp_div_r, arginfo_gmp_div)
155 ZEND_FALIAS(gmp_div, gmp_div_q, arginfo_gmp_div)
156 ZEND_FE(gmp_mod, arginfo_gmp_binary)
157 ZEND_FE(gmp_divexact, arginfo_gmp_binary)
158 ZEND_FE(gmp_neg, arginfo_gmp_unary)
159 ZEND_FE(gmp_abs, arginfo_gmp_unary)
160 ZEND_FE(gmp_fact, arginfo_gmp_unary)
161 ZEND_FE(gmp_sqrt, arginfo_gmp_unary)
162 ZEND_FE(gmp_sqrtrem, arginfo_gmp_unary)
163 ZEND_FE(gmp_root, arginfo_gmp_root)
164 ZEND_FE(gmp_rootrem, arginfo_gmp_root)
165 ZEND_FE(gmp_pow, arginfo_gmp_pow)
166 ZEND_FE(gmp_powm, arginfo_gmp_powm)
167 ZEND_FE(gmp_perfect_square, arginfo_gmp_unary)
168 ZEND_FE(gmp_prob_prime, arginfo_gmp_prob_prime)
169 ZEND_FE(gmp_gcd, arginfo_gmp_binary)
170 ZEND_FE(gmp_gcdext, arginfo_gmp_binary)
171 ZEND_FE(gmp_invert, arginfo_gmp_binary)
172 ZEND_FE(gmp_jacobi, arginfo_gmp_binary)
173 ZEND_FE(gmp_legendre, arginfo_gmp_binary)
174 ZEND_FE(gmp_cmp, arginfo_gmp_binary)
175 ZEND_FE(gmp_sign, arginfo_gmp_unary)
176 ZEND_FE(gmp_random, arginfo_gmp_random)
177 ZEND_FE(gmp_random_seed, arginfo_gmp_random_seed)
178 ZEND_FE(gmp_random_bits, arginfo_gmp_random_bits)
179 ZEND_FE(gmp_random_range, arginfo_gmp_random_range)
180 ZEND_FE(gmp_and, arginfo_gmp_binary)
181 ZEND_FE(gmp_or, arginfo_gmp_binary)
182 ZEND_FE(gmp_com, arginfo_gmp_unary)
183 ZEND_FE(gmp_xor, arginfo_gmp_binary)
184 ZEND_FE(gmp_setbit, arginfo_gmp_setbit)
185 ZEND_FE(gmp_clrbit, arginfo_gmp_bit)
186 ZEND_FE(gmp_testbit, arginfo_gmp_bit)
187 ZEND_FE(gmp_scan0, arginfo_gmp_scan)
188 ZEND_FE(gmp_scan1, arginfo_gmp_scan)
189 ZEND_FE(gmp_popcount, arginfo_gmp_unary)
190 ZEND_FE(gmp_hamdist, arginfo_gmp_binary)
191 ZEND_FE(gmp_nextprime, arginfo_gmp_unary)
192 PHP_FE_END
193 };
194 /* }}} */
195
196 /* {{{ gmp_module_entry
197 */
198 zend_module_entry gmp_module_entry = {
199 STANDARD_MODULE_HEADER,
200 "gmp",
201 gmp_functions,
202 ZEND_MODULE_STARTUP_N(gmp),
203 NULL,
204 NULL,
205 ZEND_MODULE_DEACTIVATE_N(gmp),
206 ZEND_MODULE_INFO_N(gmp),
207 PHP_GMP_VERSION,
208 ZEND_MODULE_GLOBALS(gmp),
209 ZEND_GINIT(gmp),
210 NULL,
211 NULL,
212 STANDARD_MODULE_PROPERTIES_EX
213 };
214 /* }}} */
215
216 #ifdef COMPILE_DL_GMP
217 #ifdef ZTS
218 ZEND_TSRMLS_CACHE_DEFINE()
219 #endif
220 ZEND_GET_MODULE(gmp)
221 #endif
222
223 zend_class_entry *gmp_ce;
224 static zend_object_handlers gmp_object_handlers;
225
226 typedef struct _gmp_object {
227 mpz_t num;
228 zend_object std;
229 } gmp_object;
230
231 typedef struct _gmp_temp {
232 mpz_t num;
233 zend_bool is_used;
234 } gmp_temp_t;
235
236 #define GMP_ROUND_ZERO 0
237 #define GMP_ROUND_PLUSINF 1
238 #define GMP_ROUND_MINUSINF 2
239
240 #define GMP_MSW_FIRST (1 << 0)
241 #define GMP_LSW_FIRST (1 << 1)
242 #define GMP_LITTLE_ENDIAN (1 << 2)
243 #define GMP_BIG_ENDIAN (1 << 3)
244 #define GMP_NATIVE_ENDIAN (1 << 4)
245
246 #define GMP_MAX_BASE 62
247
248 #define GMP_51_OR_NEWER \
249 ((__GNU_MP_VERSION >= 6) || (__GNU_MP_VERSION >= 5 && __GNU_MP_VERSION_MINOR >= 1))
250
251 #define IS_GMP(zval) \
252 (Z_TYPE_P(zval) == IS_OBJECT && instanceof_function(Z_OBJCE_P(zval), gmp_ce))
253
254 #define GET_GMP_OBJECT_FROM_OBJ(obj) \
255 ((gmp_object *) ((char *) (obj) - XtOffsetOf(gmp_object, std)))
256 #define GET_GMP_OBJECT_FROM_ZVAL(zv) \
257 GET_GMP_OBJECT_FROM_OBJ(Z_OBJ_P(zv))
258
259 #define GET_GMP_FROM_ZVAL(zval) \
260 GET_GMP_OBJECT_FROM_OBJ(Z_OBJ_P(zval))->num
261
262 /* The FETCH_GMP_ZVAL_* family of macros is used to fetch a gmp number
263 * (mpz_ptr) from a zval. If the zval is not a GMP instance, then we
264 * try to convert the value to a temporary gmp number using convert_to_gmp.
265 * This temporary number is stored in the temp argument, which is of type
266 * gmp_temp_t. This temporary value needs to be freed lateron using the
267 * FREE_GMP_TEMP macro.
268 *
269 * If the conversion to a gmp number fails, the macros return false.
270 * The _DEP / _DEP_DEP variants additionally free the temporary values
271 * passed in the last / last two arguments.
272 *
273 * If one zval can sometimes be fetched as a long you have to set the
274 * is_used member of the corresponding gmp_temp_t value to 0, otherwise
275 * the FREE_GMP_TEMP and *_DEP macros will not work properly.
276 *
277 * The three FETCH_GMP_ZVAL_* macros below are mostly copy & paste code
278 * as I couldn't find a way to combine them.
279 */
280
281 #define FREE_GMP_TEMP(temp) \
282 if (temp.is_used) { \
283 mpz_clear(temp.num); \
284 }
285
286 #define FETCH_GMP_ZVAL_DEP_DEP(gmpnumber, zval, temp, dep1, dep2) \
287 if (IS_GMP(zval)) { \
288 gmpnumber = GET_GMP_FROM_ZVAL(zval); \
289 temp.is_used = 0; \
290 } else { \
291 mpz_init(temp.num); \
292 if (convert_to_gmp(temp.num, zval, 0) == FAILURE) { \
293 mpz_clear(temp.num); \
294 FREE_GMP_TEMP(dep1); \
295 FREE_GMP_TEMP(dep2); \
296 RETURN_FALSE; \
297 } \
298 temp.is_used = 1; \
299 gmpnumber = temp.num; \
300 }
301
302 #define FETCH_GMP_ZVAL_DEP(gmpnumber, zval, temp, dep) \
303 if (IS_GMP(zval)) { \
304 gmpnumber = GET_GMP_FROM_ZVAL(zval); \
305 temp.is_used = 0; \
306 } else { \
307 mpz_init(temp.num); \
308 if (convert_to_gmp(temp.num, zval, 0) == FAILURE) { \
309 mpz_clear(temp.num); \
310 FREE_GMP_TEMP(dep); \
311 RETURN_FALSE; \
312 } \
313 temp.is_used = 1; \
314 gmpnumber = temp.num; \
315 }
316
317 #define FETCH_GMP_ZVAL(gmpnumber, zval, temp) \
318 if (IS_GMP(zval)) { \
319 gmpnumber = GET_GMP_FROM_ZVAL(zval); \
320 temp.is_used = 0; \
321 } else { \
322 mpz_init(temp.num); \
323 if (convert_to_gmp(temp.num, zval, 0) == FAILURE) { \
324 mpz_clear(temp.num); \
325 RETURN_FALSE; \
326 } \
327 temp.is_used = 1; \
328 gmpnumber = temp.num; \
329 }
330
331 #define INIT_GMP_RETVAL(gmpnumber) \
332 gmp_create(return_value, &gmpnumber)
333
334 static void gmp_strval(zval *result, mpz_t gmpnum, int base);
335 static int convert_to_gmp(mpz_t gmpnumber, zval *val, zend_long base);
336 static void gmp_cmp(zval *return_value, zval *a_arg, zval *b_arg);
337
338 /*
339 * The gmp_*_op functions provide an implementation for several common types
340 * of GMP functions. The gmp_zval_(unary|binary)_*_op functions have to be manually
341 * passed zvals to work on, whereas the gmp_(unary|binary)_*_op macros already
342 * include parameter parsing.
343 */
344 typedef void (*gmp_unary_op_t)(mpz_ptr, mpz_srcptr);
345 typedef int (*gmp_unary_opl_t)(mpz_srcptr);
346
347 typedef void (*gmp_unary_ui_op_t)(mpz_ptr, gmp_ulong);
348
349 typedef void (*gmp_binary_op_t)(mpz_ptr, mpz_srcptr, mpz_srcptr);
350 typedef int (*gmp_binary_opl_t)(mpz_srcptr, mpz_srcptr);
351
352 typedef void (*gmp_binary_ui_op_t)(mpz_ptr, mpz_srcptr, gmp_ulong);
353 typedef void (*gmp_binary_op2_t)(mpz_ptr, mpz_ptr, mpz_srcptr, mpz_srcptr);
354 typedef void (*gmp_binary_ui_op2_t)(mpz_ptr, mpz_ptr, mpz_srcptr, gmp_ulong);
355
356 static inline void gmp_zval_binary_ui_op(zval *return_value, zval *a_arg, zval *b_arg, gmp_binary_op_t gmp_op, gmp_binary_ui_op_t gmp_ui_op, int check_b_zero);
357 static inline void gmp_zval_binary_ui_op2(zval *return_value, zval *a_arg, zval *b_arg, gmp_binary_op2_t gmp_op, gmp_binary_ui_op2_t gmp_ui_op, int check_b_zero);
358 static inline void gmp_zval_unary_op(zval *return_value, zval *a_arg, gmp_unary_op_t gmp_op);
359 static inline void gmp_zval_unary_ui_op(zval *return_value, zval *a_arg, gmp_unary_ui_op_t gmp_op);
360
361 /* Binary operations */
362 #define gmp_binary_ui_op(op, uop) _gmp_binary_ui_op(INTERNAL_FUNCTION_PARAM_PASSTHRU, op, uop, 0)
363 #define gmp_binary_op(op) _gmp_binary_ui_op(INTERNAL_FUNCTION_PARAM_PASSTHRU, op, NULL, 0)
364 #define gmp_binary_opl(op) _gmp_binary_opl(INTERNAL_FUNCTION_PARAM_PASSTHRU, op)
365 #define gmp_binary_ui_op_no_zero(op, uop) \
366 _gmp_binary_ui_op(INTERNAL_FUNCTION_PARAM_PASSTHRU, op, uop, 1)
367
368 /* Unary operations */
369 #define gmp_unary_op(op) _gmp_unary_op(INTERNAL_FUNCTION_PARAM_PASSTHRU, op)
370 #define gmp_unary_opl(op) _gmp_unary_opl(INTERNAL_FUNCTION_PARAM_PASSTHRU, op)
371 #define gmp_unary_ui_op(op) _gmp_unary_ui_op(INTERNAL_FUNCTION_PARAM_PASSTHRU, op)
372
gmp_free_object_storage(zend_object * obj)373 static void gmp_free_object_storage(zend_object *obj) /* {{{ */
374 {
375 gmp_object *intern = GET_GMP_OBJECT_FROM_OBJ(obj);
376
377 mpz_clear(intern->num);
378 zend_object_std_dtor(&intern->std);
379 }
380 /* }}} */
381
gmp_create_object_ex(zend_class_entry * ce,mpz_ptr * gmpnum_target)382 static inline zend_object *gmp_create_object_ex(zend_class_entry *ce, mpz_ptr *gmpnum_target) /* {{{ */
383 {
384 gmp_object *intern = emalloc(sizeof(gmp_object) + zend_object_properties_size(ce));
385
386 zend_object_std_init(&intern->std, ce);
387 object_properties_init(&intern->std, ce);
388
389 mpz_init(intern->num);
390 *gmpnum_target = intern->num;
391 intern->std.handlers = &gmp_object_handlers;
392
393 return &intern->std;
394 }
395 /* }}} */
396
gmp_create_object(zend_class_entry * ce)397 static zend_object *gmp_create_object(zend_class_entry *ce) /* {{{ */
398 {
399 mpz_ptr gmpnum_dummy;
400 return gmp_create_object_ex(ce, &gmpnum_dummy);
401 }
402 /* }}} */
403
gmp_create(zval * target,mpz_ptr * gmpnum_target)404 static inline void gmp_create(zval *target, mpz_ptr *gmpnum_target) /* {{{ */
405 {
406 ZVAL_OBJ(target, gmp_create_object_ex(gmp_ce, gmpnum_target));
407 }
408 /* }}} */
409
gmp_cast_object(zval * readobj,zval * writeobj,int type)410 static int gmp_cast_object(zval *readobj, zval *writeobj, int type) /* {{{ */
411 {
412 mpz_ptr gmpnum;
413 switch (type) {
414 case IS_STRING:
415 gmpnum = GET_GMP_FROM_ZVAL(readobj);
416 gmp_strval(writeobj, gmpnum, 10);
417 return SUCCESS;
418 case IS_LONG:
419 gmpnum = GET_GMP_FROM_ZVAL(readobj);
420 ZVAL_LONG(writeobj, mpz_get_si(gmpnum));
421 return SUCCESS;
422 case IS_DOUBLE:
423 gmpnum = GET_GMP_FROM_ZVAL(readobj);
424 ZVAL_DOUBLE(writeobj, mpz_get_d(gmpnum));
425 return SUCCESS;
426 default:
427 return FAILURE;
428 }
429 }
430 /* }}} */
431
gmp_get_debug_info(zval * obj,int * is_temp)432 static HashTable *gmp_get_debug_info(zval *obj, int *is_temp) /* {{{ */
433 {
434 HashTable *ht, *props = zend_std_get_properties(obj);
435 mpz_ptr gmpnum = GET_GMP_FROM_ZVAL(obj);
436 zval zv;
437
438 *is_temp = 1;
439 ht = zend_array_dup(props);
440
441 gmp_strval(&zv, gmpnum, 10);
442 zend_hash_str_update(ht, "num", sizeof("num")-1, &zv);
443
444 return ht;
445 }
446 /* }}} */
447
gmp_clone_obj(zval * obj)448 static zend_object *gmp_clone_obj(zval *obj) /* {{{ */
449 {
450 gmp_object *old_object = GET_GMP_OBJECT_FROM_ZVAL(obj);
451 gmp_object *new_object = GET_GMP_OBJECT_FROM_OBJ(gmp_create_object(Z_OBJCE_P(obj)));
452
453 zend_objects_clone_members( &new_object->std, &old_object->std);
454
455 mpz_set(new_object->num, old_object->num);
456
457 return &new_object->std;
458 }
459 /* }}} */
460
shift_operator_helper(gmp_binary_ui_op_t op,zval * return_value,zval * op1,zval * op2)461 static void shift_operator_helper(gmp_binary_ui_op_t op, zval *return_value, zval *op1, zval *op2) {
462 zend_long shift = zval_get_long(op2);
463
464 if (shift < 0) {
465 php_error_docref(NULL, E_WARNING, "Shift cannot be negative");
466 RETVAL_FALSE;
467 } else {
468 mpz_ptr gmpnum_op, gmpnum_result;
469 gmp_temp_t temp;
470
471 FETCH_GMP_ZVAL(gmpnum_op, op1, temp);
472 INIT_GMP_RETVAL(gmpnum_result);
473 op(gmpnum_result, gmpnum_op, (gmp_ulong) shift);
474 FREE_GMP_TEMP(temp);
475 }
476 }
477
478 #define DO_BINARY_UI_OP_EX(op, uop, check_b_zero) \
479 gmp_zval_binary_ui_op( \
480 result, op1, op2, op, (gmp_binary_ui_op_t) uop, \
481 check_b_zero \
482 ); \
483 return SUCCESS;
484
485 #define DO_BINARY_UI_OP(op) DO_BINARY_UI_OP_EX(op, op ## _ui, 0)
486 #define DO_BINARY_OP(op) DO_BINARY_UI_OP_EX(op, NULL, 0)
487
488 #define DO_UNARY_OP(op) \
489 gmp_zval_unary_op(result, op1, op); \
490 return SUCCESS;
491
gmp_do_operation_ex(zend_uchar opcode,zval * result,zval * op1,zval * op2)492 static int gmp_do_operation_ex(zend_uchar opcode, zval *result, zval *op1, zval *op2) /* {{{ */
493 {
494 switch (opcode) {
495 case ZEND_ADD:
496 DO_BINARY_UI_OP(mpz_add);
497 case ZEND_SUB:
498 DO_BINARY_UI_OP(mpz_sub);
499 case ZEND_MUL:
500 DO_BINARY_UI_OP(mpz_mul);
501 case ZEND_POW:
502 shift_operator_helper(mpz_pow_ui, result, op1, op2);
503 return SUCCESS;
504 case ZEND_DIV:
505 DO_BINARY_UI_OP_EX(mpz_tdiv_q, mpz_tdiv_q_ui, 1);
506 case ZEND_MOD:
507 DO_BINARY_UI_OP_EX(mpz_mod, mpz_mod_ui, 1);
508 case ZEND_SL:
509 shift_operator_helper(mpz_mul_2exp, result, op1, op2);
510 return SUCCESS;
511 case ZEND_SR:
512 shift_operator_helper(mpz_fdiv_q_2exp, result, op1, op2);
513 return SUCCESS;
514 case ZEND_BW_OR:
515 DO_BINARY_OP(mpz_ior);
516 case ZEND_BW_AND:
517 DO_BINARY_OP(mpz_and);
518 case ZEND_BW_XOR:
519 DO_BINARY_OP(mpz_xor);
520 case ZEND_BW_NOT:
521 DO_UNARY_OP(mpz_com);
522
523 default:
524 return FAILURE;
525 }
526 }
527 /* }}} */
528
gmp_do_operation(zend_uchar opcode,zval * result,zval * op1,zval * op2)529 static int gmp_do_operation(zend_uchar opcode, zval *result, zval *op1, zval *op2) /* {{{ */
530 {
531 zval op1_copy;
532 int retval;
533
534 if (result == op1) {
535 ZVAL_COPY_VALUE(&op1_copy, op1);
536 op1 = &op1_copy;
537 }
538
539 retval = gmp_do_operation_ex(opcode, result, op1, op2);
540
541 if (retval == SUCCESS && op1 == &op1_copy) {
542 zval_dtor(op1);
543 }
544
545 return retval;
546 }
547 /* }}} */
548
gmp_compare(zval * result,zval * op1,zval * op2)549 static int gmp_compare(zval *result, zval *op1, zval *op2) /* {{{ */
550 {
551 gmp_cmp(result, op1, op2);
552 if (Z_TYPE_P(result) == IS_FALSE) {
553 ZVAL_LONG(result, 1);
554 }
555 return SUCCESS;
556 }
557 /* }}} */
558
gmp_serialize(zval * object,unsigned char ** buffer,size_t * buf_len,zend_serialize_data * data)559 static int gmp_serialize(zval *object, unsigned char **buffer, size_t *buf_len, zend_serialize_data *data) /* {{{ */
560 {
561 mpz_ptr gmpnum = GET_GMP_FROM_ZVAL(object);
562 smart_str buf = {0};
563 zval zv;
564 php_serialize_data_t serialize_data = (php_serialize_data_t) data;
565
566 PHP_VAR_SERIALIZE_INIT(serialize_data);
567
568 gmp_strval(&zv, gmpnum, 10);
569 php_var_serialize(&buf, &zv, &serialize_data);
570 zval_dtor(&zv);
571
572 ZVAL_ARR(&zv, zend_std_get_properties(object));
573 php_var_serialize(&buf, &zv, &serialize_data);
574
575 PHP_VAR_SERIALIZE_DESTROY(serialize_data);
576 *buffer = (unsigned char *) estrndup(ZSTR_VAL(buf.s), ZSTR_LEN(buf.s));
577 *buf_len = ZSTR_LEN(buf.s);
578 zend_string_release(buf.s);
579
580 return SUCCESS;
581 }
582 /* }}} */
583
gmp_unserialize(zval * object,zend_class_entry * ce,const unsigned char * buf,size_t buf_len,zend_unserialize_data * data)584 static int gmp_unserialize(zval *object, zend_class_entry *ce, const unsigned char *buf, size_t buf_len, zend_unserialize_data *data) /* {{{ */
585 {
586 mpz_ptr gmpnum;
587 const unsigned char *p, *max;
588 zval *zv;
589 int retval = FAILURE;
590 php_unserialize_data_t unserialize_data = (php_unserialize_data_t) data;
591 zval object_copy;
592
593 PHP_VAR_UNSERIALIZE_INIT(unserialize_data);
594 gmp_create(object, &gmpnum);
595
596 /* The "object" variable may be modified during the execution of this unserialize handler
597 * (it may turn into a reference). Keep the original object around for futher operations. */
598 ZVAL_COPY_VALUE(&object_copy, object);
599
600 p = buf;
601 max = buf + buf_len;
602
603 zv = var_tmp_var(&unserialize_data);
604 if (!php_var_unserialize(zv, &p, max, &unserialize_data)
605 || Z_TYPE_P(zv) != IS_STRING
606 || convert_to_gmp(gmpnum, zv, 10) == FAILURE
607 ) {
608 zend_throw_exception(NULL, "Could not unserialize number", 0);
609 goto exit;
610 }
611
612 zv = var_tmp_var(&unserialize_data);
613 if (!php_var_unserialize(zv, &p, max, &unserialize_data)
614 || Z_TYPE_P(zv) != IS_ARRAY
615 ) {
616 zend_throw_exception(NULL, "Could not unserialize properties", 0);
617 goto exit;
618 }
619
620 if (zend_hash_num_elements(Z_ARRVAL_P(zv)) != 0) {
621 zend_hash_copy(
622 zend_std_get_properties(&object_copy), Z_ARRVAL_P(zv),
623 (copy_ctor_func_t) zval_add_ref
624 );
625 }
626
627 retval = SUCCESS;
628 exit:
629 PHP_VAR_UNSERIALIZE_DESTROY(unserialize_data);
630 return retval;
631 }
632 /* }}} */
633
634 /* {{{ ZEND_GINIT_FUNCTION
635 */
ZEND_GINIT_FUNCTION(gmp)636 static ZEND_GINIT_FUNCTION(gmp)
637 {
638 #if defined(COMPILE_DL_GMP) && defined(ZTS)
639 ZEND_TSRMLS_CACHE_UPDATE();
640 #endif
641 gmp_globals->rand_initialized = 0;
642 }
643 /* }}} */
644
645 /* {{{ ZEND_MINIT_FUNCTION
646 */
ZEND_MINIT_FUNCTION(gmp)647 ZEND_MINIT_FUNCTION(gmp)
648 {
649 zend_class_entry tmp_ce;
650 INIT_CLASS_ENTRY(tmp_ce, "GMP", NULL);
651 gmp_ce = zend_register_internal_class(&tmp_ce);
652 gmp_ce->create_object = gmp_create_object;
653 gmp_ce->serialize = gmp_serialize;
654 gmp_ce->unserialize = gmp_unserialize;
655
656 memcpy(&gmp_object_handlers, zend_get_std_object_handlers(), sizeof(zend_object_handlers));
657 gmp_object_handlers.offset = XtOffsetOf(gmp_object, std);
658 gmp_object_handlers.free_obj = gmp_free_object_storage;
659 gmp_object_handlers.cast_object = gmp_cast_object;
660 gmp_object_handlers.get_debug_info = gmp_get_debug_info;
661 gmp_object_handlers.clone_obj = gmp_clone_obj;
662 gmp_object_handlers.do_operation = gmp_do_operation;
663 gmp_object_handlers.compare = gmp_compare;
664
665 REGISTER_LONG_CONSTANT("GMP_ROUND_ZERO", GMP_ROUND_ZERO, CONST_CS | CONST_PERSISTENT);
666 REGISTER_LONG_CONSTANT("GMP_ROUND_PLUSINF", GMP_ROUND_PLUSINF, CONST_CS | CONST_PERSISTENT);
667 REGISTER_LONG_CONSTANT("GMP_ROUND_MINUSINF", GMP_ROUND_MINUSINF, CONST_CS | CONST_PERSISTENT);
668 #ifdef mpir_version
669 REGISTER_STRING_CONSTANT("GMP_MPIR_VERSION", (char *)mpir_version, CONST_CS | CONST_PERSISTENT);
670 #endif
671 REGISTER_STRING_CONSTANT("GMP_VERSION", (char *)gmp_version, CONST_CS | CONST_PERSISTENT);
672
673 REGISTER_LONG_CONSTANT("GMP_MSW_FIRST", GMP_MSW_FIRST, CONST_CS | CONST_PERSISTENT);
674 REGISTER_LONG_CONSTANT("GMP_LSW_FIRST", GMP_LSW_FIRST, CONST_CS | CONST_PERSISTENT);
675 REGISTER_LONG_CONSTANT("GMP_LITTLE_ENDIAN", GMP_LITTLE_ENDIAN, CONST_CS | CONST_PERSISTENT);
676 REGISTER_LONG_CONSTANT("GMP_BIG_ENDIAN", GMP_BIG_ENDIAN, CONST_CS | CONST_PERSISTENT);
677 REGISTER_LONG_CONSTANT("GMP_NATIVE_ENDIAN", GMP_NATIVE_ENDIAN, CONST_CS | CONST_PERSISTENT);
678
679 return SUCCESS;
680 }
681 /* }}} */
682
683 /* {{{ ZEND_RSHUTDOWN_FUNCTION
684 */
ZEND_MODULE_DEACTIVATE_D(gmp)685 ZEND_MODULE_DEACTIVATE_D(gmp)
686 {
687 if (GMPG(rand_initialized)) {
688 gmp_randclear(GMPG(rand_state));
689 GMPG(rand_initialized) = 0;
690 }
691
692 return SUCCESS;
693 }
694 /* }}} */
695
696 /* {{{ ZEND_MINFO_FUNCTION
697 */
ZEND_MODULE_INFO_D(gmp)698 ZEND_MODULE_INFO_D(gmp)
699 {
700 php_info_print_table_start();
701 php_info_print_table_row(2, "gmp support", "enabled");
702 #ifdef mpir_version
703 php_info_print_table_row(2, "MPIR version", mpir_version);
704 #else
705 php_info_print_table_row(2, "GMP version", gmp_version);
706 #endif
707 php_info_print_table_end();
708 }
709 /* }}} */
710
711
712 /* {{{ convert_to_gmp
713 * Convert zval to be gmp number */
convert_to_gmp(mpz_t gmpnumber,zval * val,zend_long base)714 static int convert_to_gmp(mpz_t gmpnumber, zval *val, zend_long base)
715 {
716 switch (Z_TYPE_P(val)) {
717 case IS_LONG:
718 case IS_FALSE:
719 case IS_TRUE: {
720 mpz_set_si(gmpnumber, zval_get_long(val));
721 return SUCCESS;
722 }
723 case IS_STRING: {
724 char *numstr = Z_STRVAL_P(val);
725 zend_bool skip_lead = 0;
726 int ret;
727
728 if (Z_STRLEN_P(val) > 2 && numstr[0] == '0') {
729 if ((base == 0 || base == 16) && (numstr[1] == 'x' || numstr[1] == 'X')) {
730 base = 16;
731 skip_lead = 1;
732 } else if ((base == 0 || base == 2) && (numstr[1] == 'b' || numstr[1] == 'B')) {
733 base = 2;
734 skip_lead = 1;
735 }
736 }
737
738 ret = mpz_set_str(gmpnumber, (skip_lead ? &numstr[2] : numstr), (int) base);
739 if (-1 == ret) {
740 php_error_docref(NULL, E_WARNING,
741 "Unable to convert variable to GMP - string is not an integer");
742 return FAILURE;
743 }
744
745 return SUCCESS;
746 }
747 default:
748 php_error_docref(NULL, E_WARNING,
749 "Unable to convert variable to GMP - wrong type");
750 return FAILURE;
751 }
752 }
753 /* }}} */
754
gmp_strval(zval * result,mpz_t gmpnum,int base)755 static void gmp_strval(zval *result, mpz_t gmpnum, int base) /* {{{ */
756 {
757 size_t num_len;
758 zend_string *str;
759
760 num_len = mpz_sizeinbase(gmpnum, abs(base));
761 if (mpz_sgn(gmpnum) < 0) {
762 num_len++;
763 }
764
765 str = zend_string_alloc(num_len, 0);
766 mpz_get_str(ZSTR_VAL(str), base, gmpnum);
767
768 /*
769 * From GMP documentation for mpz_sizeinbase():
770 * The returned value will be exact or 1 too big. If base is a power of
771 * 2, the returned value will always be exact.
772 *
773 * So let's check to see if we already have a \0 byte...
774 */
775
776 if (ZSTR_VAL(str)[ZSTR_LEN(str) - 1] == '\0') {
777 ZSTR_LEN(str)--;
778 } else {
779 ZSTR_VAL(str)[ZSTR_LEN(str)] = '\0';
780 }
781
782 ZVAL_NEW_STR(result, str);
783 }
784 /* }}} */
785
gmp_cmp(zval * return_value,zval * a_arg,zval * b_arg)786 static void gmp_cmp(zval *return_value, zval *a_arg, zval *b_arg) /* {{{ */
787 {
788 mpz_ptr gmpnum_a, gmpnum_b;
789 gmp_temp_t temp_a, temp_b;
790 zend_bool use_si = 0;
791 zend_long res;
792
793 FETCH_GMP_ZVAL(gmpnum_a, a_arg, temp_a);
794
795 if (Z_TYPE_P(b_arg) == IS_LONG) {
796 use_si = 1;
797 temp_b.is_used = 0;
798 } else {
799 FETCH_GMP_ZVAL_DEP(gmpnum_b, b_arg, temp_b, temp_a);
800 }
801
802 if (use_si) {
803 res = mpz_cmp_si(gmpnum_a, Z_LVAL_P(b_arg));
804 } else {
805 res = mpz_cmp(gmpnum_a, gmpnum_b);
806 }
807
808 FREE_GMP_TEMP(temp_a);
809 FREE_GMP_TEMP(temp_b);
810
811 RETURN_LONG(res);
812 }
813 /* }}} */
814
815 /* {{{ gmp_zval_binary_ui_op
816 Execute GMP binary operation.
817 */
gmp_zval_binary_ui_op(zval * return_value,zval * a_arg,zval * b_arg,gmp_binary_op_t gmp_op,gmp_binary_ui_op_t gmp_ui_op,int check_b_zero)818 static inline void gmp_zval_binary_ui_op(zval *return_value, zval *a_arg, zval *b_arg, gmp_binary_op_t gmp_op, gmp_binary_ui_op_t gmp_ui_op, int check_b_zero)
819 {
820 mpz_ptr gmpnum_a, gmpnum_b, gmpnum_result;
821 int use_ui = 0;
822 gmp_temp_t temp_a, temp_b;
823
824 FETCH_GMP_ZVAL(gmpnum_a, a_arg, temp_a);
825
826 if (gmp_ui_op && Z_TYPE_P(b_arg) == IS_LONG && Z_LVAL_P(b_arg) >= 0) {
827 use_ui = 1;
828 temp_b.is_used = 0;
829 } else {
830 FETCH_GMP_ZVAL_DEP(gmpnum_b, b_arg, temp_b, temp_a);
831 }
832
833 if (check_b_zero) {
834 int b_is_zero = 0;
835 if (use_ui) {
836 b_is_zero = (Z_LVAL_P(b_arg) == 0);
837 } else {
838 b_is_zero = !mpz_cmp_ui(gmpnum_b, 0);
839 }
840
841 if (b_is_zero) {
842 php_error_docref(NULL, E_WARNING, "Zero operand not allowed");
843 FREE_GMP_TEMP(temp_a);
844 FREE_GMP_TEMP(temp_b);
845 RETURN_FALSE;
846 }
847 }
848
849 INIT_GMP_RETVAL(gmpnum_result);
850
851 if (use_ui) {
852 gmp_ui_op(gmpnum_result, gmpnum_a, (gmp_ulong) Z_LVAL_P(b_arg));
853 } else {
854 gmp_op(gmpnum_result, gmpnum_a, gmpnum_b);
855 }
856
857 FREE_GMP_TEMP(temp_a);
858 FREE_GMP_TEMP(temp_b);
859 }
860 /* }}} */
861
862 /* {{{ gmp_zval_binary_ui_op2
863 Execute GMP binary operation which returns 2 values.
864 */
gmp_zval_binary_ui_op2(zval * return_value,zval * a_arg,zval * b_arg,gmp_binary_op2_t gmp_op,gmp_binary_ui_op2_t gmp_ui_op,int check_b_zero)865 static inline void gmp_zval_binary_ui_op2(zval *return_value, zval *a_arg, zval *b_arg, gmp_binary_op2_t gmp_op, gmp_binary_ui_op2_t gmp_ui_op, int check_b_zero)
866 {
867 mpz_ptr gmpnum_a, gmpnum_b, gmpnum_result1, gmpnum_result2;
868 int use_ui = 0;
869 gmp_temp_t temp_a, temp_b;
870 zval result1, result2;
871
872 FETCH_GMP_ZVAL(gmpnum_a, a_arg, temp_a);
873
874 if (gmp_ui_op && Z_TYPE_P(b_arg) == IS_LONG && Z_LVAL_P(b_arg) >= 0) {
875 /* use _ui function */
876 use_ui = 1;
877 temp_b.is_used = 0;
878 } else {
879 FETCH_GMP_ZVAL_DEP(gmpnum_b, b_arg, temp_b, temp_a);
880 }
881
882 if (check_b_zero) {
883 int b_is_zero = 0;
884 if (use_ui) {
885 b_is_zero = (Z_LVAL_P(b_arg) == 0);
886 } else {
887 b_is_zero = !mpz_cmp_ui(gmpnum_b, 0);
888 }
889
890 if (b_is_zero) {
891 php_error_docref(NULL, E_WARNING, "Zero operand not allowed");
892 FREE_GMP_TEMP(temp_a);
893 FREE_GMP_TEMP(temp_b);
894 RETURN_FALSE;
895 }
896 }
897
898 gmp_create(&result1, &gmpnum_result1);
899 gmp_create(&result2, &gmpnum_result2);
900
901 array_init(return_value);
902 add_next_index_zval(return_value, &result1);
903 add_next_index_zval(return_value, &result2);
904
905 if (use_ui) {
906 gmp_ui_op(gmpnum_result1, gmpnum_result2, gmpnum_a, (gmp_ulong) Z_LVAL_P(b_arg));
907 } else {
908 gmp_op(gmpnum_result1, gmpnum_result2, gmpnum_a, gmpnum_b);
909 }
910
911 FREE_GMP_TEMP(temp_a);
912 FREE_GMP_TEMP(temp_b);
913 }
914 /* }}} */
915
916 /* {{{ _gmp_binary_ui_op
917 */
_gmp_binary_ui_op(INTERNAL_FUNCTION_PARAMETERS,gmp_binary_op_t gmp_op,gmp_binary_ui_op_t gmp_ui_op,int check_b_zero)918 static inline void _gmp_binary_ui_op(INTERNAL_FUNCTION_PARAMETERS, gmp_binary_op_t gmp_op, gmp_binary_ui_op_t gmp_ui_op, int check_b_zero)
919 {
920 zval *a_arg, *b_arg;
921
922 if (zend_parse_parameters(ZEND_NUM_ARGS(), "zz", &a_arg, &b_arg) == FAILURE){
923 return;
924 }
925
926 gmp_zval_binary_ui_op(return_value, a_arg, b_arg, gmp_op, gmp_ui_op, check_b_zero);
927 }
928 /* }}} */
929
930 /* Unary operations */
931
932 /* {{{ gmp_zval_unary_op
933 */
gmp_zval_unary_op(zval * return_value,zval * a_arg,gmp_unary_op_t gmp_op)934 static inline void gmp_zval_unary_op(zval *return_value, zval *a_arg, gmp_unary_op_t gmp_op)
935 {
936 mpz_ptr gmpnum_a, gmpnum_result;
937 gmp_temp_t temp_a;
938
939 FETCH_GMP_ZVAL(gmpnum_a, a_arg, temp_a);
940
941 INIT_GMP_RETVAL(gmpnum_result);
942 gmp_op(gmpnum_result, gmpnum_a);
943
944 FREE_GMP_TEMP(temp_a);
945 }
946 /* }}} */
947
948 /* {{{ gmp_zval_unary_ui_op
949 */
gmp_zval_unary_ui_op(zval * return_value,zval * a_arg,gmp_unary_ui_op_t gmp_op)950 static inline void gmp_zval_unary_ui_op(zval *return_value, zval *a_arg, gmp_unary_ui_op_t gmp_op)
951 {
952 mpz_ptr gmpnum_result;
953
954 INIT_GMP_RETVAL(gmpnum_result);
955 gmp_op(gmpnum_result, zval_get_long(a_arg));
956 }
957 /* }}} */
958
959 /* {{{ _gmp_unary_ui_op
960 Execute GMP unary operation.
961 */
_gmp_unary_ui_op(INTERNAL_FUNCTION_PARAMETERS,gmp_unary_ui_op_t gmp_op)962 static inline void _gmp_unary_ui_op(INTERNAL_FUNCTION_PARAMETERS, gmp_unary_ui_op_t gmp_op)
963 {
964 zval *a_arg;
965
966 if (zend_parse_parameters(ZEND_NUM_ARGS(), "z", &a_arg) == FAILURE){
967 return;
968 }
969
970 gmp_zval_unary_ui_op(return_value, a_arg, gmp_op);
971 }
972 /* }}} */
973
974 /* {{{ _gmp_unary_op
975 */
_gmp_unary_op(INTERNAL_FUNCTION_PARAMETERS,gmp_unary_op_t gmp_op)976 static inline void _gmp_unary_op(INTERNAL_FUNCTION_PARAMETERS, gmp_unary_op_t gmp_op)
977 {
978 zval *a_arg;
979
980 if (zend_parse_parameters(ZEND_NUM_ARGS(), "z", &a_arg) == FAILURE){
981 return;
982 }
983
984 gmp_zval_unary_op(return_value, a_arg, gmp_op);
985 }
986 /* }}} */
987
988 /* {{{ _gmp_unary_opl
989 */
_gmp_unary_opl(INTERNAL_FUNCTION_PARAMETERS,gmp_unary_opl_t gmp_op)990 static inline void _gmp_unary_opl(INTERNAL_FUNCTION_PARAMETERS, gmp_unary_opl_t gmp_op)
991 {
992 zval *a_arg;
993 mpz_ptr gmpnum_a;
994 gmp_temp_t temp_a;
995
996 if (zend_parse_parameters(ZEND_NUM_ARGS(), "z", &a_arg) == FAILURE){
997 return;
998 }
999
1000 FETCH_GMP_ZVAL(gmpnum_a, a_arg, temp_a);
1001 RETVAL_LONG(gmp_op(gmpnum_a));
1002 FREE_GMP_TEMP(temp_a);
1003 }
1004 /* }}} */
1005
1006 /* {{{ _gmp_binary_opl
1007 */
_gmp_binary_opl(INTERNAL_FUNCTION_PARAMETERS,gmp_binary_opl_t gmp_op)1008 static inline void _gmp_binary_opl(INTERNAL_FUNCTION_PARAMETERS, gmp_binary_opl_t gmp_op)
1009 {
1010 zval *a_arg, *b_arg;
1011 mpz_ptr gmpnum_a, gmpnum_b;
1012 gmp_temp_t temp_a, temp_b;
1013
1014 if (zend_parse_parameters(ZEND_NUM_ARGS(), "zz", &a_arg, &b_arg) == FAILURE){
1015 return;
1016 }
1017
1018 FETCH_GMP_ZVAL(gmpnum_a, a_arg, temp_a);
1019 FETCH_GMP_ZVAL_DEP(gmpnum_b, b_arg, temp_b, temp_a);
1020
1021 RETVAL_LONG(gmp_op(gmpnum_a, gmpnum_b));
1022
1023 FREE_GMP_TEMP(temp_a);
1024 FREE_GMP_TEMP(temp_b);
1025 }
1026 /* }}} */
1027
1028 /* {{{ proto GMP gmp_init(mixed number [, int base])
1029 Initializes GMP number */
ZEND_FUNCTION(gmp_init)1030 ZEND_FUNCTION(gmp_init)
1031 {
1032 zval *number_arg;
1033 mpz_ptr gmpnumber;
1034 zend_long base = 0;
1035
1036 if (zend_parse_parameters(ZEND_NUM_ARGS(), "z|l", &number_arg, &base) == FAILURE) {
1037 return;
1038 }
1039
1040 if (base && (base < 2 || base > GMP_MAX_BASE)) {
1041 php_error_docref(NULL, E_WARNING, "Bad base for conversion: " ZEND_LONG_FMT " (should be between 2 and %d)", base, GMP_MAX_BASE);
1042 RETURN_FALSE;
1043 }
1044
1045 INIT_GMP_RETVAL(gmpnumber);
1046 if (convert_to_gmp(gmpnumber, number_arg, base) == FAILURE) {
1047 zval_dtor(return_value);
1048 RETURN_FALSE;
1049 }
1050 }
1051 /* }}} */
1052
gmp_import_export_validate(zend_long size,zend_long options,int * order,int * endian)1053 int gmp_import_export_validate(zend_long size, zend_long options, int *order, int *endian)
1054 {
1055 if (size < 1) {
1056 php_error_docref(NULL, E_WARNING,
1057 "Word size must be positive, " ZEND_LONG_FMT " given", size);
1058 return FAILURE;
1059 }
1060
1061 switch (options & (GMP_LSW_FIRST | GMP_MSW_FIRST)) {
1062 case GMP_LSW_FIRST:
1063 *order = -1;
1064 break;
1065 case GMP_MSW_FIRST:
1066 case 0: /* default */
1067 *order = 1;
1068 break;
1069 default:
1070 php_error_docref(NULL, E_WARNING,
1071 "Invalid options: Conflicting word orders");
1072 return FAILURE;
1073 }
1074
1075 switch (options & (GMP_LITTLE_ENDIAN | GMP_BIG_ENDIAN | GMP_NATIVE_ENDIAN)) {
1076 case GMP_LITTLE_ENDIAN:
1077 *endian = -1;
1078 break;
1079 case GMP_BIG_ENDIAN:
1080 *endian = 1;
1081 break;
1082 case GMP_NATIVE_ENDIAN:
1083 case 0: /* default */
1084 *endian = 0;
1085 break;
1086 default:
1087 php_error_docref(NULL, E_WARNING,
1088 "Invalid options: Conflicting word endianness");
1089 return FAILURE;
1090 }
1091
1092 return SUCCESS;
1093 }
1094
1095 /* {{{ proto GMP gmp_import(string data [, int word_size = 1, int options = GMP_MSW_FIRST | GMP_NATIVE_ENDIAN])
1096 Imports a GMP number from a binary string */
ZEND_FUNCTION(gmp_import)1097 ZEND_FUNCTION(gmp_import)
1098 {
1099 char *data;
1100 size_t data_len;
1101 zend_long size = 1;
1102 zend_long options = GMP_MSW_FIRST | GMP_NATIVE_ENDIAN;
1103 int order, endian;
1104 mpz_ptr gmpnumber;
1105
1106 if (zend_parse_parameters(ZEND_NUM_ARGS(), "s|ll", &data, &data_len, &size, &options) == FAILURE) {
1107 return;
1108 }
1109
1110 if (gmp_import_export_validate(size, options, &order, &endian) == FAILURE) {
1111 RETURN_FALSE;
1112 }
1113
1114 if ((data_len % size) != 0) {
1115 php_error_docref(NULL, E_WARNING,
1116 "Input length must be a multiple of word size");
1117 RETURN_FALSE;
1118 }
1119
1120 INIT_GMP_RETVAL(gmpnumber);
1121
1122 mpz_import(gmpnumber, data_len / size, order, size, endian, 0, data);
1123 }
1124 /* }}} */
1125
1126 /* {{{ proto string gmp_export(GMP gmpnumber [, int word_size = 1, int options = GMP_MSW_FIRST | GMP_NATIVE_ENDIAN])
1127 Exports a GMP number to a binary string */
ZEND_FUNCTION(gmp_export)1128 ZEND_FUNCTION(gmp_export)
1129 {
1130 zval *gmpnumber_arg;
1131 zend_long size = 1;
1132 zend_long options = GMP_MSW_FIRST | GMP_NATIVE_ENDIAN;
1133 int order, endian;
1134 mpz_ptr gmpnumber;
1135 gmp_temp_t temp_a;
1136
1137 if (zend_parse_parameters(ZEND_NUM_ARGS(), "z|ll", &gmpnumber_arg, &size, &options) == FAILURE) {
1138 return;
1139 }
1140
1141 if (gmp_import_export_validate(size, options, &order, &endian) == FAILURE) {
1142 RETURN_FALSE;
1143 }
1144
1145 FETCH_GMP_ZVAL(gmpnumber, gmpnumber_arg, temp_a);
1146
1147 if (mpz_sgn(gmpnumber) == 0) {
1148 RETURN_EMPTY_STRING();
1149 } else {
1150 size_t bits_per_word = size * 8;
1151 size_t count = (mpz_sizeinbase(gmpnumber, 2) + bits_per_word - 1) / bits_per_word;
1152
1153 zend_string *out_string = zend_string_safe_alloc(count, size, 0, 0);
1154 mpz_export(ZSTR_VAL(out_string), NULL, order, size, endian, 0, gmpnumber);
1155 ZSTR_VAL(out_string)[ZSTR_LEN(out_string)] = '\0';
1156
1157 RETURN_NEW_STR(out_string);
1158 }
1159
1160 FREE_GMP_TEMP(temp_a);
1161 }
1162 /* }}} */
1163
1164 /* {{{ proto int gmp_intval(mixed gmpnumber)
1165 Gets signed long value of GMP number */
ZEND_FUNCTION(gmp_intval)1166 ZEND_FUNCTION(gmp_intval)
1167 {
1168 zval *gmpnumber_arg;
1169
1170 if (zend_parse_parameters(ZEND_NUM_ARGS(), "z", &gmpnumber_arg) == FAILURE){
1171 return;
1172 }
1173
1174 if (IS_GMP(gmpnumber_arg)) {
1175 RETVAL_LONG(mpz_get_si(GET_GMP_FROM_ZVAL(gmpnumber_arg)));
1176 } else {
1177 RETVAL_LONG(zval_get_long(gmpnumber_arg));
1178 }
1179 }
1180 /* }}} */
1181
1182 /* {{{ proto string gmp_strval(mixed gmpnumber [, int base])
1183 Gets string representation of GMP number */
ZEND_FUNCTION(gmp_strval)1184 ZEND_FUNCTION(gmp_strval)
1185 {
1186 zval *gmpnumber_arg;
1187 zend_long base = 10;
1188 mpz_ptr gmpnum;
1189 gmp_temp_t temp_a;
1190
1191 if (zend_parse_parameters(ZEND_NUM_ARGS(), "z|l", &gmpnumber_arg, &base) == FAILURE) {
1192 return;
1193 }
1194
1195 /* Although the maximum base in general in GMP is 62, mpz_get_str()
1196 * is explicitly limited to -36 when dealing with negative bases. */
1197 if ((base < 2 && base > -2) || base > GMP_MAX_BASE || base < -36) {
1198 php_error_docref(NULL, E_WARNING, "Bad base for conversion: " ZEND_LONG_FMT " (should be between 2 and %d or -2 and -36)", base, GMP_MAX_BASE);
1199 RETURN_FALSE;
1200 }
1201
1202 FETCH_GMP_ZVAL(gmpnum, gmpnumber_arg, temp_a);
1203
1204 gmp_strval(return_value, gmpnum, (int)base);
1205
1206 FREE_GMP_TEMP(temp_a);
1207 }
1208 /* }}} */
1209
1210 /* {{{ proto GMP gmp_add(mixed a, mixed b)
1211 Add a and b */
ZEND_FUNCTION(gmp_add)1212 ZEND_FUNCTION(gmp_add)
1213 {
1214 gmp_binary_ui_op(mpz_add, mpz_add_ui);
1215 }
1216 /* }}} */
1217
1218 /* {{{ proto GMP gmp_sub(mixed a, mixed b)
1219 Subtract b from a */
ZEND_FUNCTION(gmp_sub)1220 ZEND_FUNCTION(gmp_sub)
1221 {
1222 gmp_binary_ui_op(mpz_sub, mpz_sub_ui);
1223 }
1224 /* }}} */
1225
1226 /* {{{ proto GMP gmp_mul(mixed a, mixed b)
1227 Multiply a and b */
ZEND_FUNCTION(gmp_mul)1228 ZEND_FUNCTION(gmp_mul)
1229 {
1230 gmp_binary_ui_op(mpz_mul, mpz_mul_ui);
1231 }
1232 /* }}} */
1233
1234 /* {{{ proto array gmp_div_qr(mixed a, mixed b [, int round])
1235 Divide a by b, returns quotient and reminder */
ZEND_FUNCTION(gmp_div_qr)1236 ZEND_FUNCTION(gmp_div_qr)
1237 {
1238 zval *a_arg, *b_arg;
1239 zend_long round = GMP_ROUND_ZERO;
1240
1241 if (zend_parse_parameters(ZEND_NUM_ARGS(), "zz|l", &a_arg, &b_arg, &round) == FAILURE) {
1242 return;
1243 }
1244
1245 switch (round) {
1246 case GMP_ROUND_ZERO:
1247 gmp_zval_binary_ui_op2(return_value, a_arg, b_arg, mpz_tdiv_qr, (gmp_binary_ui_op2_t) mpz_tdiv_qr_ui, 1);
1248 break;
1249 case GMP_ROUND_PLUSINF:
1250 gmp_zval_binary_ui_op2(return_value, a_arg, b_arg, mpz_cdiv_qr, (gmp_binary_ui_op2_t) mpz_cdiv_qr_ui, 1);
1251 break;
1252 case GMP_ROUND_MINUSINF:
1253 gmp_zval_binary_ui_op2(return_value, a_arg, b_arg, mpz_fdiv_qr, (gmp_binary_ui_op2_t) mpz_fdiv_qr_ui, 1);
1254 break;
1255 default:
1256 php_error_docref(NULL, E_WARNING, "Invalid rounding mode");
1257 RETURN_FALSE;
1258 }
1259 }
1260 /* }}} */
1261
1262 /* {{{ proto GMP gmp_div_r(mixed a, mixed b [, int round])
1263 Divide a by b, returns reminder only */
ZEND_FUNCTION(gmp_div_r)1264 ZEND_FUNCTION(gmp_div_r)
1265 {
1266 zval *a_arg, *b_arg;
1267 zend_long round = GMP_ROUND_ZERO;
1268
1269 if (zend_parse_parameters(ZEND_NUM_ARGS(), "zz|l", &a_arg, &b_arg, &round) == FAILURE) {
1270 return;
1271 }
1272
1273 switch (round) {
1274 case GMP_ROUND_ZERO:
1275 gmp_zval_binary_ui_op(return_value, a_arg, b_arg, mpz_tdiv_r, (gmp_binary_ui_op_t) mpz_tdiv_r_ui, 1);
1276 break;
1277 case GMP_ROUND_PLUSINF:
1278 gmp_zval_binary_ui_op(return_value, a_arg, b_arg, mpz_cdiv_r, (gmp_binary_ui_op_t) mpz_cdiv_r_ui, 1);
1279 break;
1280 case GMP_ROUND_MINUSINF:
1281 gmp_zval_binary_ui_op(return_value, a_arg, b_arg, mpz_fdiv_r, (gmp_binary_ui_op_t) mpz_fdiv_r_ui, 1);
1282 break;
1283 default:
1284 php_error_docref(NULL, E_WARNING, "Invalid rounding mode");
1285 RETURN_FALSE;
1286 }
1287 }
1288 /* }}} */
1289
1290 /* {{{ proto GMP gmp_div_q(mixed a, mixed b [, int round])
1291 Divide a by b, returns quotient only */
ZEND_FUNCTION(gmp_div_q)1292 ZEND_FUNCTION(gmp_div_q)
1293 {
1294 zval *a_arg, *b_arg;
1295 zend_long round = GMP_ROUND_ZERO;
1296
1297 if (zend_parse_parameters(ZEND_NUM_ARGS(), "zz|l", &a_arg, &b_arg, &round) == FAILURE) {
1298 return;
1299 }
1300
1301 switch (round) {
1302 case GMP_ROUND_ZERO:
1303 gmp_zval_binary_ui_op(return_value, a_arg, b_arg, mpz_tdiv_q, (gmp_binary_ui_op_t) mpz_tdiv_q_ui, 1);
1304 break;
1305 case GMP_ROUND_PLUSINF:
1306 gmp_zval_binary_ui_op(return_value, a_arg, b_arg, mpz_cdiv_q, (gmp_binary_ui_op_t) mpz_cdiv_q_ui, 1);
1307 break;
1308 case GMP_ROUND_MINUSINF:
1309 gmp_zval_binary_ui_op(return_value, a_arg, b_arg, mpz_fdiv_q, (gmp_binary_ui_op_t) mpz_fdiv_q_ui, 1);
1310 break;
1311 default:
1312 php_error_docref(NULL, E_WARNING, "Invalid rounding mode");
1313 RETURN_FALSE;
1314 }
1315
1316 }
1317 /* }}} */
1318
1319 /* {{{ proto GMP gmp_mod(mixed a, mixed b)
1320 Computes a modulo b */
ZEND_FUNCTION(gmp_mod)1321 ZEND_FUNCTION(gmp_mod)
1322 {
1323 gmp_binary_ui_op_no_zero(mpz_mod, (gmp_binary_ui_op_t) mpz_mod_ui);
1324 }
1325 /* }}} */
1326
1327 /* {{{ proto GMP gmp_divexact(mixed a, mixed b)
1328 Divide a by b using exact division algorithm */
ZEND_FUNCTION(gmp_divexact)1329 ZEND_FUNCTION(gmp_divexact)
1330 {
1331 gmp_binary_ui_op_no_zero(mpz_divexact, NULL);
1332 }
1333 /* }}} */
1334
1335 /* {{{ proto GMP gmp_neg(mixed a)
1336 Negates a number */
ZEND_FUNCTION(gmp_neg)1337 ZEND_FUNCTION(gmp_neg)
1338 {
1339 gmp_unary_op(mpz_neg);
1340 }
1341 /* }}} */
1342
1343 /* {{{ proto GMP gmp_abs(mixed a)
1344 Calculates absolute value */
ZEND_FUNCTION(gmp_abs)1345 ZEND_FUNCTION(gmp_abs)
1346 {
1347 gmp_unary_op(mpz_abs);
1348 }
1349 /* }}} */
1350
1351 /* {{{ proto GMP gmp_fact(int a)
1352 Calculates factorial function */
ZEND_FUNCTION(gmp_fact)1353 ZEND_FUNCTION(gmp_fact)
1354 {
1355 zval *a_arg;
1356
1357 if (zend_parse_parameters(ZEND_NUM_ARGS(), "z", &a_arg) == FAILURE){
1358 return;
1359 }
1360
1361 if (IS_GMP(a_arg)) {
1362 mpz_ptr gmpnum_tmp = GET_GMP_FROM_ZVAL(a_arg);
1363 if (mpz_sgn(gmpnum_tmp) < 0) {
1364 php_error_docref(NULL, E_WARNING, "Number has to be greater than or equal to 0");
1365 RETURN_FALSE;
1366 }
1367 } else {
1368 if (zval_get_long(a_arg) < 0) {
1369 php_error_docref(NULL, E_WARNING, "Number has to be greater than or equal to 0");
1370 RETURN_FALSE;
1371 }
1372 }
1373
1374 gmp_zval_unary_ui_op(return_value, a_arg, mpz_fac_ui);
1375 }
1376 /* }}} */
1377
1378 /* {{{ proto GMP gmp_pow(mixed base, int exp)
1379 Raise base to power exp */
ZEND_FUNCTION(gmp_pow)1380 ZEND_FUNCTION(gmp_pow)
1381 {
1382 zval *base_arg;
1383 mpz_ptr gmpnum_result, gmpnum_base;
1384 gmp_temp_t temp_base;
1385 zend_long exp;
1386
1387 if (zend_parse_parameters(ZEND_NUM_ARGS(), "zl", &base_arg, &exp) == FAILURE) {
1388 return;
1389 }
1390
1391 if (exp < 0) {
1392 php_error_docref(NULL, E_WARNING, "Negative exponent not supported");
1393 RETURN_FALSE;
1394 }
1395
1396 if (Z_TYPE_P(base_arg) == IS_LONG && Z_LVAL_P(base_arg) >= 0) {
1397 INIT_GMP_RETVAL(gmpnum_result);
1398 mpz_ui_pow_ui(gmpnum_result, Z_LVAL_P(base_arg), exp);
1399 } else {
1400 FETCH_GMP_ZVAL(gmpnum_base, base_arg, temp_base);
1401 INIT_GMP_RETVAL(gmpnum_result);
1402 mpz_pow_ui(gmpnum_result, gmpnum_base, exp);
1403 FREE_GMP_TEMP(temp_base);
1404 }
1405 }
1406 /* }}} */
1407
1408 /* {{{ proto GMP gmp_powm(mixed base, mixed exp, mixed mod)
1409 Raise base to power exp and take result modulo mod */
ZEND_FUNCTION(gmp_powm)1410 ZEND_FUNCTION(gmp_powm)
1411 {
1412 zval *base_arg, *exp_arg, *mod_arg;
1413 mpz_ptr gmpnum_base, gmpnum_exp, gmpnum_mod, gmpnum_result;
1414 int use_ui = 0;
1415 gmp_temp_t temp_base, temp_exp, temp_mod;
1416
1417 if (zend_parse_parameters(ZEND_NUM_ARGS(), "zzz", &base_arg, &exp_arg, &mod_arg) == FAILURE){
1418 return;
1419 }
1420
1421 FETCH_GMP_ZVAL(gmpnum_base, base_arg, temp_base);
1422
1423 if (Z_TYPE_P(exp_arg) == IS_LONG && Z_LVAL_P(exp_arg) >= 0) {
1424 use_ui = 1;
1425 temp_exp.is_used = 0;
1426 } else {
1427 FETCH_GMP_ZVAL_DEP(gmpnum_exp, exp_arg, temp_exp, temp_base);
1428 if (mpz_sgn(gmpnum_exp) < 0) {
1429 php_error_docref(NULL, E_WARNING, "Second parameter cannot be less than 0");
1430 FREE_GMP_TEMP(temp_base);
1431 FREE_GMP_TEMP(temp_exp);
1432 RETURN_FALSE;
1433 }
1434 }
1435 FETCH_GMP_ZVAL_DEP_DEP(gmpnum_mod, mod_arg, temp_mod, temp_exp, temp_base);
1436
1437 if (!mpz_cmp_ui(gmpnum_mod, 0)) {
1438 php_error_docref(NULL, E_WARNING, "Modulus may not be zero");
1439 FREE_GMP_TEMP(temp_base);
1440 FREE_GMP_TEMP(temp_exp);
1441 FREE_GMP_TEMP(temp_mod);
1442 RETURN_FALSE;
1443 }
1444
1445 INIT_GMP_RETVAL(gmpnum_result);
1446 if (use_ui) {
1447 mpz_powm_ui(gmpnum_result, gmpnum_base, (zend_ulong) Z_LVAL_P(exp_arg), gmpnum_mod);
1448 } else {
1449 mpz_powm(gmpnum_result, gmpnum_base, gmpnum_exp, gmpnum_mod);
1450 FREE_GMP_TEMP(temp_exp);
1451 }
1452
1453 FREE_GMP_TEMP(temp_base);
1454 FREE_GMP_TEMP(temp_mod);
1455 }
1456 /* }}} */
1457
1458 /* {{{ proto GMP gmp_sqrt(mixed a)
1459 Takes integer part of square root of a */
ZEND_FUNCTION(gmp_sqrt)1460 ZEND_FUNCTION(gmp_sqrt)
1461 {
1462 zval *a_arg;
1463 mpz_ptr gmpnum_a, gmpnum_result;
1464 gmp_temp_t temp_a;
1465
1466 if (zend_parse_parameters(ZEND_NUM_ARGS(), "z", &a_arg) == FAILURE){
1467 return;
1468 }
1469
1470 FETCH_GMP_ZVAL(gmpnum_a, a_arg, temp_a);
1471
1472 if (mpz_sgn(gmpnum_a) < 0) {
1473 php_error_docref(NULL, E_WARNING, "Number has to be greater than or equal to 0");
1474 FREE_GMP_TEMP(temp_a);
1475 RETURN_FALSE;
1476 }
1477
1478 INIT_GMP_RETVAL(gmpnum_result);
1479 mpz_sqrt(gmpnum_result, gmpnum_a);
1480 FREE_GMP_TEMP(temp_a);
1481 }
1482 /* }}} */
1483
1484 /* {{{ proto array gmp_sqrtrem(mixed a)
1485 Square root with remainder */
ZEND_FUNCTION(gmp_sqrtrem)1486 ZEND_FUNCTION(gmp_sqrtrem)
1487 {
1488 zval *a_arg;
1489 mpz_ptr gmpnum_a, gmpnum_result1, gmpnum_result2;
1490 gmp_temp_t temp_a;
1491 zval result1, result2;
1492
1493 if (zend_parse_parameters(ZEND_NUM_ARGS(), "z", &a_arg) == FAILURE){
1494 return;
1495 }
1496
1497 FETCH_GMP_ZVAL(gmpnum_a, a_arg, temp_a);
1498
1499 if (mpz_sgn(gmpnum_a) < 0) {
1500 php_error_docref(NULL, E_WARNING, "Number has to be greater than or equal to 0");
1501 FREE_GMP_TEMP(temp_a);
1502 RETURN_FALSE;
1503 }
1504
1505 gmp_create(&result1, &gmpnum_result1);
1506 gmp_create(&result2, &gmpnum_result2);
1507
1508 array_init(return_value);
1509 add_next_index_zval(return_value, &result1);
1510 add_next_index_zval(return_value, &result2);
1511
1512 mpz_sqrtrem(gmpnum_result1, gmpnum_result2, gmpnum_a);
1513 FREE_GMP_TEMP(temp_a);
1514 }
1515 /* }}} */
1516
1517 /* {{{ proto GMP gmp_root(mixed a, int nth)
1518 Takes integer part of nth root */
ZEND_FUNCTION(gmp_root)1519 ZEND_FUNCTION(gmp_root)
1520 {
1521 zval *a_arg;
1522 zend_long nth;
1523 mpz_ptr gmpnum_a, gmpnum_result;
1524 gmp_temp_t temp_a;
1525
1526 if (zend_parse_parameters(ZEND_NUM_ARGS(), "zl", &a_arg, &nth) == FAILURE) {
1527 return;
1528 }
1529
1530 if (nth <= 0) {
1531 php_error_docref(NULL, E_WARNING, "The root must be positive");
1532 RETURN_FALSE;
1533 }
1534
1535 FETCH_GMP_ZVAL(gmpnum_a, a_arg, temp_a);
1536
1537 if (nth % 2 == 0 && mpz_sgn(gmpnum_a) < 0) {
1538 php_error_docref(NULL, E_WARNING, "Can't take even root of negative number");
1539 FREE_GMP_TEMP(temp_a);
1540 RETURN_FALSE;
1541 }
1542
1543 INIT_GMP_RETVAL(gmpnum_result);
1544 mpz_root(gmpnum_result, gmpnum_a, (gmp_ulong) nth);
1545 FREE_GMP_TEMP(temp_a);
1546 }
1547 /* }}} */
1548
1549 /* {{{ proto GMP gmp_rootrem(mixed a, int nth)
1550 Calculates integer part of nth root and remainder */
ZEND_FUNCTION(gmp_rootrem)1551 ZEND_FUNCTION(gmp_rootrem)
1552 {
1553 zval *a_arg;
1554 zend_long nth;
1555 mpz_ptr gmpnum_a, gmpnum_result1, gmpnum_result2;
1556 gmp_temp_t temp_a;
1557 zval result1, result2;
1558
1559 if (zend_parse_parameters(ZEND_NUM_ARGS(), "zl", &a_arg, &nth) == FAILURE) {
1560 return;
1561 }
1562
1563 if (nth <= 0) {
1564 php_error_docref(NULL, E_WARNING, "The root must be positive");
1565 RETURN_FALSE;
1566 }
1567
1568 FETCH_GMP_ZVAL(gmpnum_a, a_arg, temp_a);
1569
1570 if (nth % 2 == 0 && mpz_sgn(gmpnum_a) < 0) {
1571 php_error_docref(NULL, E_WARNING, "Can't take even root of negative number");
1572 FREE_GMP_TEMP(temp_a);
1573 RETURN_FALSE;
1574 }
1575
1576 gmp_create(&result1, &gmpnum_result1);
1577 gmp_create(&result2, &gmpnum_result2);
1578
1579 array_init(return_value);
1580 add_next_index_zval(return_value, &result1);
1581 add_next_index_zval(return_value, &result2);
1582
1583 #if GMP_51_OR_NEWER
1584 /* mpz_rootrem() is supported since GMP 4.2, but buggy wrt odd roots
1585 * of negative numbers */
1586 mpz_rootrem(gmpnum_result1, gmpnum_result2, gmpnum_a, (gmp_ulong) nth);
1587 #else
1588 mpz_root(gmpnum_result1, gmpnum_a, (gmp_ulong) nth);
1589 mpz_pow_ui(gmpnum_result2, gmpnum_result1, (gmp_ulong) nth);
1590 mpz_sub(gmpnum_result2, gmpnum_a, gmpnum_result2);
1591 #endif
1592
1593 FREE_GMP_TEMP(temp_a);
1594 }
1595 /* }}} */
1596
1597 /* {{{ proto bool gmp_perfect_square(mixed a)
1598 Checks if a is an exact square */
ZEND_FUNCTION(gmp_perfect_square)1599 ZEND_FUNCTION(gmp_perfect_square)
1600 {
1601 zval *a_arg;
1602 mpz_ptr gmpnum_a;
1603 gmp_temp_t temp_a;
1604
1605 if (zend_parse_parameters(ZEND_NUM_ARGS(), "z", &a_arg) == FAILURE){
1606 return;
1607 }
1608
1609 FETCH_GMP_ZVAL(gmpnum_a, a_arg, temp_a);
1610
1611 RETVAL_BOOL((mpz_perfect_square_p(gmpnum_a) != 0));
1612 FREE_GMP_TEMP(temp_a);
1613 }
1614 /* }}} */
1615
1616 /* {{{ proto int gmp_prob_prime(mixed a[, int reps])
1617 Checks if a is "probably prime" */
ZEND_FUNCTION(gmp_prob_prime)1618 ZEND_FUNCTION(gmp_prob_prime)
1619 {
1620 zval *gmpnumber_arg;
1621 mpz_ptr gmpnum_a;
1622 zend_long reps = 10;
1623 gmp_temp_t temp_a;
1624
1625 if (zend_parse_parameters(ZEND_NUM_ARGS(), "z|l", &gmpnumber_arg, &reps) == FAILURE) {
1626 return;
1627 }
1628
1629 FETCH_GMP_ZVAL(gmpnum_a, gmpnumber_arg, temp_a);
1630
1631 RETVAL_LONG(mpz_probab_prime_p(gmpnum_a, (int)reps));
1632 FREE_GMP_TEMP(temp_a);
1633 }
1634 /* }}} */
1635
1636 /* {{{ proto GMP gmp_gcd(mixed a, mixed b)
1637 Computes greatest common denominator (gcd) of a and b */
ZEND_FUNCTION(gmp_gcd)1638 ZEND_FUNCTION(gmp_gcd)
1639 {
1640 gmp_binary_ui_op(mpz_gcd, (gmp_binary_ui_op_t) mpz_gcd_ui);
1641 }
1642 /* }}} */
1643
1644 /* {{{ proto array gmp_gcdext(mixed a, mixed b)
1645 Computes G, S, and T, such that AS + BT = G = `gcd' (A, B) */
ZEND_FUNCTION(gmp_gcdext)1646 ZEND_FUNCTION(gmp_gcdext)
1647 {
1648 zval *a_arg, *b_arg;
1649 mpz_ptr gmpnum_a, gmpnum_b, gmpnum_t, gmpnum_s, gmpnum_g;
1650 gmp_temp_t temp_a, temp_b;
1651 zval result_g, result_s, result_t;
1652
1653 if (zend_parse_parameters(ZEND_NUM_ARGS(), "zz", &a_arg, &b_arg) == FAILURE){
1654 return;
1655 }
1656
1657 FETCH_GMP_ZVAL(gmpnum_a, a_arg, temp_a);
1658 FETCH_GMP_ZVAL_DEP(gmpnum_b, b_arg, temp_b, temp_a);
1659
1660 gmp_create(&result_g, &gmpnum_g);
1661 gmp_create(&result_s, &gmpnum_s);
1662 gmp_create(&result_t, &gmpnum_t);
1663
1664 array_init(return_value);
1665 add_assoc_zval(return_value, "g", &result_g);
1666 add_assoc_zval(return_value, "s", &result_s);
1667 add_assoc_zval(return_value, "t", &result_t);
1668
1669 mpz_gcdext(gmpnum_g, gmpnum_s, gmpnum_t, gmpnum_a, gmpnum_b);
1670 FREE_GMP_TEMP(temp_a);
1671 FREE_GMP_TEMP(temp_b);
1672 }
1673 /* }}} */
1674
1675 /* {{{ proto GMP gmp_invert(mixed a, mixed b)
1676 Computes the inverse of a modulo b */
ZEND_FUNCTION(gmp_invert)1677 ZEND_FUNCTION(gmp_invert)
1678 {
1679 zval *a_arg, *b_arg;
1680 mpz_ptr gmpnum_a, gmpnum_b, gmpnum_result;
1681 gmp_temp_t temp_a, temp_b;
1682 int res;
1683
1684 if (zend_parse_parameters(ZEND_NUM_ARGS(), "zz", &a_arg, &b_arg) == FAILURE){
1685 return;
1686 }
1687
1688 FETCH_GMP_ZVAL(gmpnum_a, a_arg, temp_a);
1689 FETCH_GMP_ZVAL_DEP(gmpnum_b, b_arg, temp_b, temp_a);
1690
1691 INIT_GMP_RETVAL(gmpnum_result);
1692 res = mpz_invert(gmpnum_result, gmpnum_a, gmpnum_b);
1693 FREE_GMP_TEMP(temp_a);
1694 FREE_GMP_TEMP(temp_b);
1695 if (!res) {
1696 zval_dtor(return_value);
1697 RETURN_FALSE;
1698 }
1699 }
1700 /* }}} */
1701
1702 /* {{{ proto int gmp_jacobi(mixed a, mixed b)
1703 Computes Jacobi symbol */
ZEND_FUNCTION(gmp_jacobi)1704 ZEND_FUNCTION(gmp_jacobi)
1705 {
1706 gmp_binary_opl(mpz_jacobi);
1707 }
1708 /* }}} */
1709
1710 /* {{{ proto int gmp_legendre(mixed a, mixed b)
1711 Computes Legendre symbol */
ZEND_FUNCTION(gmp_legendre)1712 ZEND_FUNCTION(gmp_legendre)
1713 {
1714 gmp_binary_opl(mpz_legendre);
1715 }
1716 /* }}} */
1717
1718 /* {{{ proto int gmp_cmp(mixed a, mixed b)
1719 Compares two numbers */
ZEND_FUNCTION(gmp_cmp)1720 ZEND_FUNCTION(gmp_cmp)
1721 {
1722 zval *a_arg, *b_arg;
1723
1724 if (zend_parse_parameters(ZEND_NUM_ARGS(), "zz", &a_arg, &b_arg) == FAILURE){
1725 return;
1726 }
1727
1728 gmp_cmp(return_value, a_arg, b_arg);
1729 }
1730 /* }}} */
1731
1732 /* {{{ proto int gmp_sign(mixed a)
1733 Gets the sign of the number */
ZEND_FUNCTION(gmp_sign)1734 ZEND_FUNCTION(gmp_sign)
1735 {
1736 /* Can't use gmp_unary_opl here, because mpz_sgn is a macro */
1737 zval *a_arg;
1738 mpz_ptr gmpnum_a;
1739 gmp_temp_t temp_a;
1740
1741 if (zend_parse_parameters(ZEND_NUM_ARGS(), "z", &a_arg) == FAILURE){
1742 return;
1743 }
1744
1745 FETCH_GMP_ZVAL(gmpnum_a, a_arg, temp_a);
1746
1747 RETVAL_LONG(mpz_sgn(gmpnum_a));
1748 FREE_GMP_TEMP(temp_a);
1749 }
1750 /* }}} */
1751
gmp_init_random(void)1752 static void gmp_init_random(void)
1753 {
1754 if (!GMPG(rand_initialized)) {
1755 /* Initialize */
1756 gmp_randinit_mt(GMPG(rand_state));
1757 /* Seed */
1758 gmp_randseed_ui(GMPG(rand_state), GENERATE_SEED());
1759
1760 GMPG(rand_initialized) = 1;
1761 }
1762 }
1763
1764 /* {{{ proto GMP gmp_random([int limiter])
1765 Gets random number */
ZEND_FUNCTION(gmp_random)1766 ZEND_FUNCTION(gmp_random)
1767 {
1768 zend_long limiter = 20;
1769 mpz_ptr gmpnum_result;
1770
1771 if (zend_parse_parameters(ZEND_NUM_ARGS(), "|l", &limiter) == FAILURE) {
1772 return;
1773 }
1774
1775 INIT_GMP_RETVAL(gmpnum_result);
1776 gmp_init_random();
1777
1778 #ifdef GMP_LIMB_BITS
1779 mpz_urandomb(gmpnum_result, GMPG(rand_state), GMP_ABS (limiter) * GMP_LIMB_BITS);
1780 #else
1781 mpz_urandomb(gmpnum_result, GMPG(rand_state), GMP_ABS (limiter) * __GMP_BITS_PER_MP_LIMB);
1782 #endif
1783 }
1784 /* }}} */
1785
1786 /* {{{ proto GMP gmp_random_seed(mixed seed)
1787 Seed the RNG */
ZEND_FUNCTION(gmp_random_seed)1788 ZEND_FUNCTION(gmp_random_seed)
1789 {
1790 zval *seed;
1791 mpz_ptr gmpnum_seed;
1792 gmp_temp_t temp_a;
1793
1794 if (zend_parse_parameters(ZEND_NUM_ARGS(), "z", &seed) == FAILURE) {
1795 return;
1796 }
1797
1798 gmp_init_random();
1799
1800 if (Z_TYPE_P(seed) == IS_LONG && Z_LVAL_P(seed) >= 0) {
1801 gmp_randseed_ui(GMPG(rand_state), Z_LVAL_P(seed));
1802 }
1803 else {
1804 FETCH_GMP_ZVAL(gmpnum_seed, seed, temp_a);
1805
1806 gmp_randseed(GMPG(rand_state), gmpnum_seed);
1807
1808 FREE_GMP_TEMP(temp_a);
1809 }
1810 }
1811 /* }}} */
1812
1813 /* {{{ proto GMP gmp_random_bits(int bits)
1814 Gets a random number in the range 0 to (2 ** n) - 1 */
ZEND_FUNCTION(gmp_random_bits)1815 ZEND_FUNCTION(gmp_random_bits)
1816 {
1817 zend_long bits;
1818 mpz_ptr gmpnum_result;
1819
1820 if (zend_parse_parameters(ZEND_NUM_ARGS(), "l", &bits) == FAILURE) {
1821 return;
1822 }
1823
1824 if (bits <= 0) {
1825 php_error_docref(NULL, E_WARNING, "The number of bits must be positive");
1826 RETURN_FALSE;
1827 }
1828
1829 INIT_GMP_RETVAL(gmpnum_result);
1830 gmp_init_random();
1831
1832 mpz_urandomb(gmpnum_result, GMPG(rand_state), bits);
1833 }
1834 /* }}} */
1835
1836 /* {{{ proto GMP gmp_random_range(mixed min, mixed max)
1837 Gets a random number in the range min to max */
ZEND_FUNCTION(gmp_random_range)1838 ZEND_FUNCTION(gmp_random_range)
1839 {
1840 zval *min_arg, *max_arg;
1841 mpz_ptr gmpnum_min, gmpnum_max, gmpnum_result;
1842 mpz_t gmpnum_range;
1843 gmp_temp_t temp_a, temp_b;
1844
1845 if (zend_parse_parameters(ZEND_NUM_ARGS(), "zz", &min_arg, &max_arg) == FAILURE) {
1846 return;
1847 }
1848
1849 gmp_init_random();
1850
1851 FETCH_GMP_ZVAL(gmpnum_max, max_arg, temp_a);
1852
1853 if (Z_TYPE_P(min_arg) == IS_LONG && Z_LVAL_P(min_arg) >= 0) {
1854 if (mpz_cmp_ui(gmpnum_max, Z_LVAL_P(min_arg)) <= 0) {
1855 FREE_GMP_TEMP(temp_a);
1856 php_error_docref(NULL, E_WARNING, "The minimum value must be less than the maximum value");
1857 RETURN_FALSE;
1858 }
1859
1860 INIT_GMP_RETVAL(gmpnum_result);
1861 mpz_init(gmpnum_range);
1862
1863 if (Z_LVAL_P(min_arg) != 0) {
1864 mpz_sub_ui(gmpnum_range, gmpnum_max, Z_LVAL_P(min_arg) - 1);
1865 } else {
1866 mpz_add_ui(gmpnum_range, gmpnum_max, 1);
1867 }
1868
1869 mpz_urandomm(gmpnum_result, GMPG(rand_state), gmpnum_range);
1870
1871 if (Z_LVAL_P(min_arg) != 0) {
1872 mpz_add_ui(gmpnum_result, gmpnum_result, Z_LVAL_P(min_arg));
1873 }
1874
1875 mpz_clear(gmpnum_range);
1876 FREE_GMP_TEMP(temp_a);
1877 } else {
1878 FETCH_GMP_ZVAL_DEP(gmpnum_min, min_arg, temp_b, temp_a);
1879
1880 if (mpz_cmp(gmpnum_max, gmpnum_min) <= 0) {
1881 FREE_GMP_TEMP(temp_b);
1882 FREE_GMP_TEMP(temp_a);
1883 php_error_docref(NULL, E_WARNING, "The minimum value must be less than the maximum value");
1884 RETURN_FALSE;
1885 }
1886
1887 INIT_GMP_RETVAL(gmpnum_result);
1888 mpz_init(gmpnum_range);
1889
1890 mpz_sub(gmpnum_range, gmpnum_max, gmpnum_min);
1891 mpz_add_ui(gmpnum_range, gmpnum_range, 1);
1892 mpz_urandomm(gmpnum_result, GMPG(rand_state), gmpnum_range);
1893 mpz_add(gmpnum_result, gmpnum_result, gmpnum_min);
1894
1895 mpz_clear(gmpnum_range);
1896 FREE_GMP_TEMP(temp_b);
1897 FREE_GMP_TEMP(temp_a);
1898 }
1899 }
1900 /* }}} */
1901
1902 /* {{{ proto GMP gmp_and(mixed a, mixed b)
1903 Calculates logical AND of a and b */
ZEND_FUNCTION(gmp_and)1904 ZEND_FUNCTION(gmp_and)
1905 {
1906 gmp_binary_op(mpz_and);
1907 }
1908 /* }}} */
1909
1910 /* {{{ proto GMP gmp_or(mixed a, mixed b)
1911 Calculates logical OR of a and b */
ZEND_FUNCTION(gmp_or)1912 ZEND_FUNCTION(gmp_or)
1913 {
1914 gmp_binary_op(mpz_ior);
1915 }
1916 /* }}} */
1917
1918 /* {{{ proto GMP gmp_com(mixed a)
1919 Calculates one's complement of a */
ZEND_FUNCTION(gmp_com)1920 ZEND_FUNCTION(gmp_com)
1921 {
1922 gmp_unary_op(mpz_com);
1923 }
1924 /* }}} */
1925
1926 /* {{{ proto GMP gmp_nextprime(mixed a)
1927 Finds next prime of a */
ZEND_FUNCTION(gmp_nextprime)1928 ZEND_FUNCTION(gmp_nextprime)
1929 {
1930 gmp_unary_op(mpz_nextprime);
1931 }
1932 /* }}} */
1933
1934 /* {{{ proto GMP gmp_xor(mixed a, mixed b)
1935 Calculates logical exclusive OR of a and b */
ZEND_FUNCTION(gmp_xor)1936 ZEND_FUNCTION(gmp_xor)
1937 {
1938 gmp_binary_op(mpz_xor);
1939 }
1940 /* }}} */
1941
1942 /* {{{ proto void gmp_setbit(GMP a, int index[, bool set_clear])
1943 Sets or clear bit in a */
ZEND_FUNCTION(gmp_setbit)1944 ZEND_FUNCTION(gmp_setbit)
1945 {
1946 zval *a_arg;
1947 zend_long index;
1948 zend_bool set = 1;
1949 mpz_ptr gmpnum_a;
1950
1951 if (zend_parse_parameters(ZEND_NUM_ARGS(), "Ol|b", &a_arg, gmp_ce, &index, &set) == FAILURE) {
1952 return;
1953 }
1954
1955 if (index < 0) {
1956 php_error_docref(NULL, E_WARNING, "Index must be greater than or equal to zero");
1957 RETURN_FALSE;
1958 }
1959 if (index / GMP_NUMB_BITS >= INT_MAX) {
1960 php_error_docref(NULL, E_WARNING, "Index must be less than %d * %d", INT_MAX, GMP_NUMB_BITS);
1961 RETURN_FALSE;
1962 }
1963
1964 gmpnum_a = GET_GMP_FROM_ZVAL(a_arg);
1965
1966 if (set) {
1967 mpz_setbit(gmpnum_a, index);
1968 } else {
1969 mpz_clrbit(gmpnum_a, index);
1970 }
1971 }
1972 /* }}} */
1973
1974 /* {{{ proto void gmp_clrbit(GMP a, int index)
1975 Clears bit in a */
ZEND_FUNCTION(gmp_clrbit)1976 ZEND_FUNCTION(gmp_clrbit)
1977 {
1978 zval *a_arg;
1979 zend_long index;
1980 mpz_ptr gmpnum_a;
1981
1982 if (zend_parse_parameters(ZEND_NUM_ARGS(), "Ol", &a_arg, gmp_ce, &index) == FAILURE){
1983 return;
1984 }
1985
1986 if (index < 0) {
1987 php_error_docref(NULL, E_WARNING, "Index must be greater than or equal to zero");
1988 RETURN_FALSE;
1989 }
1990
1991 gmpnum_a = GET_GMP_FROM_ZVAL(a_arg);
1992 mpz_clrbit(gmpnum_a, index);
1993 }
1994 /* }}} */
1995
1996 /* {{{ proto bool gmp_testbit(mixed a, int index)
1997 Tests if bit is set in a */
ZEND_FUNCTION(gmp_testbit)1998 ZEND_FUNCTION(gmp_testbit)
1999 {
2000 zval *a_arg;
2001 zend_long index;
2002 mpz_ptr gmpnum_a;
2003 gmp_temp_t temp_a;
2004
2005 if (zend_parse_parameters(ZEND_NUM_ARGS(), "zl", &a_arg, &index) == FAILURE){
2006 return;
2007 }
2008
2009 if (index < 0) {
2010 php_error_docref(NULL, E_WARNING, "Index must be greater than or equal to zero");
2011 RETURN_FALSE;
2012 }
2013
2014 FETCH_GMP_ZVAL(gmpnum_a, a_arg, temp_a);
2015 RETVAL_BOOL(mpz_tstbit(gmpnum_a, index));
2016 FREE_GMP_TEMP(temp_a);
2017 }
2018 /* }}} */
2019
2020 /* {{{ proto int gmp_popcount(mixed a)
2021 Calculates the population count of a */
ZEND_FUNCTION(gmp_popcount)2022 ZEND_FUNCTION(gmp_popcount)
2023 {
2024 gmp_unary_opl((gmp_unary_opl_t) mpz_popcount);
2025 }
2026 /* }}} */
2027
2028 /* {{{ proto int gmp_hamdist(mixed a, mixed b)
2029 Calculates hamming distance between a and b */
ZEND_FUNCTION(gmp_hamdist)2030 ZEND_FUNCTION(gmp_hamdist)
2031 {
2032 gmp_binary_opl((gmp_binary_opl_t) mpz_hamdist);
2033 }
2034 /* }}} */
2035
2036 /* {{{ proto int gmp_scan0(mixed a, int start)
2037 Finds first zero bit */
ZEND_FUNCTION(gmp_scan0)2038 ZEND_FUNCTION(gmp_scan0)
2039 {
2040 zval *a_arg;
2041 mpz_ptr gmpnum_a;
2042 gmp_temp_t temp_a;
2043 zend_long start;
2044
2045 if (zend_parse_parameters(ZEND_NUM_ARGS(), "zl", &a_arg, &start) == FAILURE){
2046 return;
2047 }
2048
2049 if (start < 0) {
2050 php_error_docref(NULL, E_WARNING, "Starting index must be greater than or equal to zero");
2051 RETURN_FALSE;
2052 }
2053
2054 FETCH_GMP_ZVAL(gmpnum_a, a_arg, temp_a);
2055
2056 RETVAL_LONG(mpz_scan0(gmpnum_a, start));
2057 FREE_GMP_TEMP(temp_a);
2058 }
2059 /* }}} */
2060
2061 /* {{{ proto int gmp_scan1(mixed a, int start)
2062 Finds first non-zero bit */
ZEND_FUNCTION(gmp_scan1)2063 ZEND_FUNCTION(gmp_scan1)
2064 {
2065 zval *a_arg;
2066 mpz_ptr gmpnum_a;
2067 gmp_temp_t temp_a;
2068 zend_long start;
2069
2070 if (zend_parse_parameters(ZEND_NUM_ARGS(), "zl", &a_arg, &start) == FAILURE){
2071 return;
2072 }
2073
2074 if (start < 0) {
2075 php_error_docref(NULL, E_WARNING, "Starting index must be greater than or equal to zero");
2076 RETURN_FALSE;
2077 }
2078
2079 FETCH_GMP_ZVAL(gmpnum_a, a_arg, temp_a);
2080
2081 RETVAL_LONG(mpz_scan1(gmpnum_a, start));
2082 FREE_GMP_TEMP(temp_a);
2083 }
2084 /* }}} */
2085
2086 #endif /* HAVE_GMP */
2087
2088 /*
2089 * Local variables:
2090 * tab-width: 4
2091 * c-basic-offset: 4
2092 * End:
2093 * vim600: noet sw=4 ts=4 fdm=marker
2094 * vim<600: noet sw=4 ts=4
2095 */
2096
