Guido van Rossum | dce2e3d | 1991-06-04 19:42:30 +0000 | [diff] [blame] | 1 | |
| 2 | /* Write Python objects to files and read them back. |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 3 | This is primarily intended for writing and reading compiled Python code, |
| 4 | even though dicts, lists, sets and frozensets, not commonly seen in |
| 5 | code objects, are supported. |
| 6 | Version 3 of this protocol properly supports circular links |
| 7 | and sharing. */ |
Guido van Rossum | dce2e3d | 1991-06-04 19:42:30 +0000 | [diff] [blame] | 8 | |
Thomas Wouters | 695934a | 2006-03-01 23:49:13 +0000 | [diff] [blame] | 9 | #define PY_SSIZE_T_CLEAN |
| 10 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 11 | #include "Python.h" |
Guido van Rossum | dce2e3d | 1991-06-04 19:42:30 +0000 | [diff] [blame] | 12 | #include "longintrepr.h" |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 13 | #include "code.h" |
Guido van Rossum | dce2e3d | 1991-06-04 19:42:30 +0000 | [diff] [blame] | 14 | #include "marshal.h" |
| 15 | |
Mark Dickinson | bd79264 | 2009-03-18 20:06:12 +0000 | [diff] [blame] | 16 | #define ABS(x) ((x) < 0 ? -(x) : (x)) |
| 17 | |
Fred Drake | 6da0b91 | 2000-06-28 18:47:56 +0000 | [diff] [blame] | 18 | /* High water mark to determine when the marshalled object is dangerously deep |
| 19 | * and risks coring the interpreter. When the object stack gets this deep, |
| 20 | * raise an exception instead of continuing. |
Guido van Rossum | 63175a1 | 2007-08-29 20:39:13 +0000 | [diff] [blame] | 21 | * On Windows debug builds, reduce this value. |
Fred Drake | 6da0b91 | 2000-06-28 18:47:56 +0000 | [diff] [blame] | 22 | */ |
Guido van Rossum | 63175a1 | 2007-08-29 20:39:13 +0000 | [diff] [blame] | 23 | #if defined(MS_WINDOWS) && defined(_DEBUG) |
| 24 | #define MAX_MARSHAL_STACK_DEPTH 1500 |
| 25 | #else |
Guido van Rossum | d59da4b | 2007-05-22 18:11:13 +0000 | [diff] [blame] | 26 | #define MAX_MARSHAL_STACK_DEPTH 2000 |
Guido van Rossum | 63175a1 | 2007-08-29 20:39:13 +0000 | [diff] [blame] | 27 | #endif |
Fred Drake | 6da0b91 | 2000-06-28 18:47:56 +0000 | [diff] [blame] | 28 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 29 | #define TYPE_NULL '0' |
| 30 | #define TYPE_NONE 'N' |
| 31 | #define TYPE_FALSE 'F' |
| 32 | #define TYPE_TRUE 'T' |
| 33 | #define TYPE_STOPITER 'S' |
| 34 | #define TYPE_ELLIPSIS '.' |
| 35 | #define TYPE_INT 'i' |
Martin v. Löwis | 7e39572 | 2012-07-28 19:44:05 +0200 | [diff] [blame] | 36 | /* TYPE_INT64 is deprecated. It is not |
| 37 | generated anymore, and support for reading it |
| 38 | will be removed in Python 3.4. */ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 39 | #define TYPE_INT64 'I' |
| 40 | #define TYPE_FLOAT 'f' |
| 41 | #define TYPE_BINARY_FLOAT 'g' |
| 42 | #define TYPE_COMPLEX 'x' |
| 43 | #define TYPE_BINARY_COMPLEX 'y' |
| 44 | #define TYPE_LONG 'l' |
| 45 | #define TYPE_STRING 's' |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 46 | #define TYPE_INTERNED 't' |
| 47 | #define TYPE_REF 'r' |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 48 | #define TYPE_TUPLE '(' |
| 49 | #define TYPE_LIST '[' |
| 50 | #define TYPE_DICT '{' |
| 51 | #define TYPE_CODE 'c' |
| 52 | #define TYPE_UNICODE 'u' |
| 53 | #define TYPE_UNKNOWN '?' |
| 54 | #define TYPE_SET '<' |
| 55 | #define TYPE_FROZENSET '>' |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 56 | #define FLAG_REF '\x80' /* with a type, add obj to index */ |
Guido van Rossum | dce2e3d | 1991-06-04 19:42:30 +0000 | [diff] [blame] | 57 | |
Eric Smith | b1a03cf | 2009-04-21 11:57:38 +0000 | [diff] [blame] | 58 | #define WFERR_OK 0 |
| 59 | #define WFERR_UNMARSHALLABLE 1 |
| 60 | #define WFERR_NESTEDTOODEEP 2 |
| 61 | #define WFERR_NOMEMORY 3 |
| 62 | |
Guido van Rossum | 0b0db8e | 1993-01-21 16:07:51 +0000 | [diff] [blame] | 63 | typedef struct { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 64 | FILE *fp; |
| 65 | int error; /* see WFERR_* values */ |
| 66 | int depth; |
| 67 | /* If fp == NULL, the following are valid: */ |
Éric Araujo | 6c0ba44 | 2011-07-26 17:23:57 +0200 | [diff] [blame] | 68 | PyObject *readable; /* Stream-like object being read from */ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 69 | PyObject *str; |
Benjamin Peterson | 43b0686 | 2011-05-27 09:08:01 -0500 | [diff] [blame] | 70 | PyObject *current_filename; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 71 | char *ptr; |
| 72 | char *end; |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 73 | PyObject *refs; /* dict on marshal, list on unmarshal */ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 74 | int version; |
Guido van Rossum | 0b0db8e | 1993-01-21 16:07:51 +0000 | [diff] [blame] | 75 | } WFILE; |
Guido van Rossum | dce2e3d | 1991-06-04 19:42:30 +0000 | [diff] [blame] | 76 | |
Guido van Rossum | 0b0db8e | 1993-01-21 16:07:51 +0000 | [diff] [blame] | 77 | #define w_byte(c, p) if (((p)->fp)) putc((c), (p)->fp); \ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 78 | else if ((p)->ptr != (p)->end) *(p)->ptr++ = (c); \ |
| 79 | else w_more(c, p) |
Guido van Rossum | 0b0db8e | 1993-01-21 16:07:51 +0000 | [diff] [blame] | 80 | |
| 81 | static void |
Fredrik Lundh | 1153438 | 2000-07-23 18:24:06 +0000 | [diff] [blame] | 82 | w_more(int c, WFILE *p) |
Guido van Rossum | 0b0db8e | 1993-01-21 16:07:51 +0000 | [diff] [blame] | 83 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 84 | Py_ssize_t size, newsize; |
| 85 | if (p->str == NULL) |
| 86 | return; /* An error already occurred */ |
| 87 | size = PyBytes_Size(p->str); |
| 88 | newsize = size + size + 1024; |
| 89 | if (newsize > 32*1024*1024) { |
| 90 | newsize = size + (size >> 3); /* 12.5% overallocation */ |
| 91 | } |
| 92 | if (_PyBytes_Resize(&p->str, newsize) != 0) { |
| 93 | p->ptr = p->end = NULL; |
| 94 | } |
| 95 | else { |
| 96 | p->ptr = PyBytes_AS_STRING((PyBytesObject *)p->str) + size; |
| 97 | p->end = |
| 98 | PyBytes_AS_STRING((PyBytesObject *)p->str) + newsize; |
| 99 | *p->ptr++ = Py_SAFE_DOWNCAST(c, int, char); |
| 100 | } |
Guido van Rossum | 0b0db8e | 1993-01-21 16:07:51 +0000 | [diff] [blame] | 101 | } |
| 102 | |
| 103 | static void |
Serhiy Storchaka | 7e01911 | 2013-02-13 12:08:15 +0200 | [diff] [blame] | 104 | w_string(char *s, Py_ssize_t n, WFILE *p) |
Guido van Rossum | 0b0db8e | 1993-01-21 16:07:51 +0000 | [diff] [blame] | 105 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 106 | if (p->fp != NULL) { |
| 107 | fwrite(s, 1, n, p->fp); |
| 108 | } |
| 109 | else { |
| 110 | while (--n >= 0) { |
| 111 | w_byte(*s, p); |
| 112 | s++; |
| 113 | } |
| 114 | } |
Guido van Rossum | 0b0db8e | 1993-01-21 16:07:51 +0000 | [diff] [blame] | 115 | } |
| 116 | |
| 117 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 118 | w_short(int x, WFILE *p) |
Guido van Rossum | dce2e3d | 1991-06-04 19:42:30 +0000 | [diff] [blame] | 119 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 120 | w_byte((char)( x & 0xff), p); |
| 121 | w_byte((char)((x>> 8) & 0xff), p); |
Guido van Rossum | dce2e3d | 1991-06-04 19:42:30 +0000 | [diff] [blame] | 122 | } |
| 123 | |
Guido van Rossum | 0b0db8e | 1993-01-21 16:07:51 +0000 | [diff] [blame] | 124 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 125 | w_long(long x, WFILE *p) |
Guido van Rossum | dce2e3d | 1991-06-04 19:42:30 +0000 | [diff] [blame] | 126 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 127 | w_byte((char)( x & 0xff), p); |
| 128 | w_byte((char)((x>> 8) & 0xff), p); |
| 129 | w_byte((char)((x>>16) & 0xff), p); |
| 130 | w_byte((char)((x>>24) & 0xff), p); |
Guido van Rossum | dce2e3d | 1991-06-04 19:42:30 +0000 | [diff] [blame] | 131 | } |
| 132 | |
Serhiy Storchaka | 7e01911 | 2013-02-13 12:08:15 +0200 | [diff] [blame] | 133 | #define SIZE32_MAX 0x7FFFFFFF |
| 134 | |
| 135 | #if SIZEOF_SIZE_T > 4 |
| 136 | # define W_SIZE(n, p) do { \ |
| 137 | if ((n) > SIZE32_MAX) { \ |
| 138 | (p)->depth--; \ |
| 139 | (p)->error = WFERR_UNMARSHALLABLE; \ |
| 140 | return; \ |
| 141 | } \ |
| 142 | w_long((long)(n), p); \ |
| 143 | } while(0) |
| 144 | #else |
| 145 | # define W_SIZE w_long |
| 146 | #endif |
| 147 | |
Mark Dickinson | bd79264 | 2009-03-18 20:06:12 +0000 | [diff] [blame] | 148 | /* We assume that Python longs are stored internally in base some power of |
| 149 | 2**15; for the sake of portability we'll always read and write them in base |
| 150 | exactly 2**15. */ |
| 151 | |
| 152 | #define PyLong_MARSHAL_SHIFT 15 |
| 153 | #define PyLong_MARSHAL_BASE ((short)1 << PyLong_MARSHAL_SHIFT) |
| 154 | #define PyLong_MARSHAL_MASK (PyLong_MARSHAL_BASE - 1) |
| 155 | #if PyLong_SHIFT % PyLong_MARSHAL_SHIFT != 0 |
| 156 | #error "PyLong_SHIFT must be a multiple of PyLong_MARSHAL_SHIFT" |
| 157 | #endif |
| 158 | #define PyLong_MARSHAL_RATIO (PyLong_SHIFT / PyLong_MARSHAL_SHIFT) |
| 159 | |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 160 | #define W_TYPE(t, p) do { \ |
| 161 | w_byte((t) | flag, (p)); \ |
| 162 | } while(0) |
| 163 | |
Mark Dickinson | bd79264 | 2009-03-18 20:06:12 +0000 | [diff] [blame] | 164 | static void |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 165 | w_PyLong(const PyLongObject *ob, char flag, WFILE *p) |
Mark Dickinson | bd79264 | 2009-03-18 20:06:12 +0000 | [diff] [blame] | 166 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 167 | Py_ssize_t i, j, n, l; |
| 168 | digit d; |
Mark Dickinson | bd79264 | 2009-03-18 20:06:12 +0000 | [diff] [blame] | 169 | |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 170 | W_TYPE(TYPE_LONG, p); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 171 | if (Py_SIZE(ob) == 0) { |
| 172 | w_long((long)0, p); |
| 173 | return; |
| 174 | } |
Mark Dickinson | bd79264 | 2009-03-18 20:06:12 +0000 | [diff] [blame] | 175 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 176 | /* set l to number of base PyLong_MARSHAL_BASE digits */ |
| 177 | n = ABS(Py_SIZE(ob)); |
| 178 | l = (n-1) * PyLong_MARSHAL_RATIO; |
| 179 | d = ob->ob_digit[n-1]; |
| 180 | assert(d != 0); /* a PyLong is always normalized */ |
| 181 | do { |
| 182 | d >>= PyLong_MARSHAL_SHIFT; |
| 183 | l++; |
| 184 | } while (d != 0); |
Serhiy Storchaka | 7e01911 | 2013-02-13 12:08:15 +0200 | [diff] [blame] | 185 | if (l > SIZE32_MAX) { |
| 186 | p->depth--; |
| 187 | p->error = WFERR_UNMARSHALLABLE; |
| 188 | return; |
| 189 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 190 | w_long((long)(Py_SIZE(ob) > 0 ? l : -l), p); |
Mark Dickinson | bd79264 | 2009-03-18 20:06:12 +0000 | [diff] [blame] | 191 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 192 | for (i=0; i < n-1; i++) { |
| 193 | d = ob->ob_digit[i]; |
| 194 | for (j=0; j < PyLong_MARSHAL_RATIO; j++) { |
| 195 | w_short(d & PyLong_MARSHAL_MASK, p); |
| 196 | d >>= PyLong_MARSHAL_SHIFT; |
| 197 | } |
| 198 | assert (d == 0); |
| 199 | } |
| 200 | d = ob->ob_digit[n-1]; |
| 201 | do { |
| 202 | w_short(d & PyLong_MARSHAL_MASK, p); |
| 203 | d >>= PyLong_MARSHAL_SHIFT; |
| 204 | } while (d != 0); |
Mark Dickinson | bd79264 | 2009-03-18 20:06:12 +0000 | [diff] [blame] | 205 | } |
| 206 | |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 207 | static int |
| 208 | w_ref(PyObject *v, char *flag, WFILE *p) |
| 209 | { |
| 210 | PyObject *id; |
| 211 | PyObject *idx; |
| 212 | |
| 213 | if (p->version < 3 || p->refs == NULL) |
| 214 | return 0; /* not writing object references */ |
| 215 | |
| 216 | /* if it has only one reference, it definitely isn't shared */ |
| 217 | if (Py_REFCNT(v) == 1) |
| 218 | return 0; |
| 219 | |
| 220 | id = PyLong_FromVoidPtr((void*)v); |
| 221 | if (id == NULL) |
| 222 | goto err; |
| 223 | idx = PyDict_GetItem(p->refs, id); |
| 224 | if (idx != NULL) { |
| 225 | /* write the reference index to the stream */ |
| 226 | long w = PyLong_AsLong(idx); |
| 227 | Py_DECREF(id); |
| 228 | if (w == -1 && PyErr_Occurred()) { |
| 229 | goto err; |
| 230 | } |
| 231 | /* we don't store "long" indices in the dict */ |
| 232 | assert(0 <= w && w <= 0x7fffffff); |
| 233 | w_byte(TYPE_REF, p); |
| 234 | w_long(w, p); |
| 235 | return 1; |
| 236 | } else { |
| 237 | int ok; |
| 238 | Py_ssize_t s = PyDict_Size(p->refs); |
| 239 | /* we don't support long indices */ |
| 240 | if (s >= 0x7fffffff) { |
| 241 | PyErr_SetString(PyExc_ValueError, "too many objects"); |
| 242 | goto err; |
| 243 | } |
| 244 | idx = PyLong_FromSsize_t(s); |
| 245 | ok = idx && PyDict_SetItem(p->refs, id, idx) == 0; |
| 246 | Py_DECREF(id); |
| 247 | Py_XDECREF(idx); |
| 248 | if (!ok) |
| 249 | goto err; |
| 250 | *flag |= FLAG_REF; |
| 251 | return 0; |
| 252 | } |
| 253 | err: |
| 254 | p->error = WFERR_UNMARSHALLABLE; |
| 255 | return 1; |
| 256 | } |
| 257 | |
| 258 | static void |
| 259 | w_complex_object(PyObject *v, char flag, WFILE *p); |
| 260 | |
Guido van Rossum | b0c168c | 1996-12-05 23:15:02 +0000 | [diff] [blame] | 261 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 262 | w_object(PyObject *v, WFILE *p) |
Guido van Rossum | dce2e3d | 1991-06-04 19:42:30 +0000 | [diff] [blame] | 263 | { |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 264 | char flag = '\0'; |
Fred Drake | 6da0b91 | 2000-06-28 18:47:56 +0000 | [diff] [blame] | 265 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 266 | p->depth++; |
Tim Peters | d9b9ac8 | 2001-01-28 00:27:39 +0000 | [diff] [blame] | 267 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 268 | if (p->depth > MAX_MARSHAL_STACK_DEPTH) { |
| 269 | p->error = WFERR_NESTEDTOODEEP; |
| 270 | } |
| 271 | else if (v == NULL) { |
| 272 | w_byte(TYPE_NULL, p); |
| 273 | } |
| 274 | else if (v == Py_None) { |
| 275 | w_byte(TYPE_NONE, p); |
| 276 | } |
| 277 | else if (v == PyExc_StopIteration) { |
| 278 | w_byte(TYPE_STOPITER, p); |
| 279 | } |
| 280 | else if (v == Py_Ellipsis) { |
| 281 | w_byte(TYPE_ELLIPSIS, p); |
| 282 | } |
| 283 | else if (v == Py_False) { |
| 284 | w_byte(TYPE_FALSE, p); |
| 285 | } |
| 286 | else if (v == Py_True) { |
| 287 | w_byte(TYPE_TRUE, p); |
| 288 | } |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 289 | else if (!w_ref(v, &flag, p)) |
| 290 | w_complex_object(v, flag, p); |
| 291 | |
| 292 | p->depth--; |
| 293 | } |
| 294 | |
| 295 | static void |
| 296 | w_complex_object(PyObject *v, char flag, WFILE *p) |
| 297 | { |
| 298 | Py_ssize_t i, n; |
| 299 | |
| 300 | if (PyLong_CheckExact(v)) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 301 | long x = PyLong_AsLong(v); |
| 302 | if ((x == -1) && PyErr_Occurred()) { |
| 303 | PyLongObject *ob = (PyLongObject *)v; |
| 304 | PyErr_Clear(); |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 305 | w_PyLong(ob, flag, p); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 306 | } |
| 307 | else { |
Guido van Rossum | c1547d9 | 1996-12-10 15:39:04 +0000 | [diff] [blame] | 308 | #if SIZEOF_LONG > 4 |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 309 | long y = Py_ARITHMETIC_RIGHT_SHIFT(long, x, 31); |
| 310 | if (y && y != -1) { |
Martin v. Löwis | 7e39572 | 2012-07-28 19:44:05 +0200 | [diff] [blame] | 311 | /* Too large for TYPE_INT */ |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 312 | w_PyLong((PyLongObject*)v, flag, p); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 313 | } |
| 314 | else |
Guido van Rossum | c1547d9 | 1996-12-10 15:39:04 +0000 | [diff] [blame] | 315 | #endif |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 316 | { |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 317 | W_TYPE(TYPE_INT, p); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 318 | w_long(x, p); |
| 319 | } |
| 320 | } |
| 321 | } |
| 322 | else if (PyFloat_CheckExact(v)) { |
| 323 | if (p->version > 1) { |
| 324 | unsigned char buf[8]; |
| 325 | if (_PyFloat_Pack8(PyFloat_AsDouble(v), |
| 326 | buf, 1) < 0) { |
| 327 | p->error = WFERR_UNMARSHALLABLE; |
| 328 | return; |
| 329 | } |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 330 | W_TYPE(TYPE_BINARY_FLOAT, p); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 331 | w_string((char*)buf, 8, p); |
| 332 | } |
| 333 | else { |
| 334 | char *buf = PyOS_double_to_string(PyFloat_AS_DOUBLE(v), |
| 335 | 'g', 17, 0, NULL); |
| 336 | if (!buf) { |
| 337 | p->error = WFERR_NOMEMORY; |
| 338 | return; |
| 339 | } |
| 340 | n = strlen(buf); |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 341 | W_TYPE(TYPE_FLOAT, p); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 342 | w_byte((int)n, p); |
Serhiy Storchaka | 7e01911 | 2013-02-13 12:08:15 +0200 | [diff] [blame] | 343 | w_string(buf, n, p); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 344 | PyMem_Free(buf); |
| 345 | } |
| 346 | } |
| 347 | else if (PyComplex_CheckExact(v)) { |
| 348 | if (p->version > 1) { |
| 349 | unsigned char buf[8]; |
| 350 | if (_PyFloat_Pack8(PyComplex_RealAsDouble(v), |
| 351 | buf, 1) < 0) { |
| 352 | p->error = WFERR_UNMARSHALLABLE; |
| 353 | return; |
| 354 | } |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 355 | W_TYPE(TYPE_BINARY_COMPLEX, p); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 356 | w_string((char*)buf, 8, p); |
| 357 | if (_PyFloat_Pack8(PyComplex_ImagAsDouble(v), |
| 358 | buf, 1) < 0) { |
| 359 | p->error = WFERR_UNMARSHALLABLE; |
| 360 | return; |
| 361 | } |
| 362 | w_string((char*)buf, 8, p); |
| 363 | } |
| 364 | else { |
| 365 | char *buf; |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 366 | W_TYPE(TYPE_COMPLEX, p); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 367 | buf = PyOS_double_to_string(PyComplex_RealAsDouble(v), |
| 368 | 'g', 17, 0, NULL); |
| 369 | if (!buf) { |
| 370 | p->error = WFERR_NOMEMORY; |
| 371 | return; |
| 372 | } |
| 373 | n = strlen(buf); |
| 374 | w_byte((int)n, p); |
Serhiy Storchaka | 7e01911 | 2013-02-13 12:08:15 +0200 | [diff] [blame] | 375 | w_string(buf, n, p); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 376 | PyMem_Free(buf); |
| 377 | buf = PyOS_double_to_string(PyComplex_ImagAsDouble(v), |
| 378 | 'g', 17, 0, NULL); |
| 379 | if (!buf) { |
| 380 | p->error = WFERR_NOMEMORY; |
| 381 | return; |
| 382 | } |
| 383 | n = strlen(buf); |
| 384 | w_byte((int)n, p); |
Serhiy Storchaka | 7e01911 | 2013-02-13 12:08:15 +0200 | [diff] [blame] | 385 | w_string(buf, n, p); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 386 | PyMem_Free(buf); |
| 387 | } |
| 388 | } |
| 389 | else if (PyBytes_CheckExact(v)) { |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 390 | W_TYPE(TYPE_STRING, p); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 391 | n = PyBytes_GET_SIZE(v); |
Serhiy Storchaka | 7e01911 | 2013-02-13 12:08:15 +0200 | [diff] [blame] | 392 | W_SIZE(n, p); |
| 393 | w_string(PyBytes_AS_STRING(v), n, p); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 394 | } |
| 395 | else if (PyUnicode_CheckExact(v)) { |
| 396 | PyObject *utf8; |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 397 | utf8 = PyUnicode_AsEncodedString(v, "utf8", "surrogatepass"); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 398 | if (utf8 == NULL) { |
| 399 | p->depth--; |
| 400 | p->error = WFERR_UNMARSHALLABLE; |
| 401 | return; |
| 402 | } |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 403 | if (p->version >= 3 && PyUnicode_CHECK_INTERNED(v)) |
| 404 | W_TYPE(TYPE_INTERNED, p); |
| 405 | else |
| 406 | W_TYPE(TYPE_UNICODE, p); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 407 | n = PyBytes_GET_SIZE(utf8); |
Serhiy Storchaka | 7e01911 | 2013-02-13 12:08:15 +0200 | [diff] [blame] | 408 | W_SIZE(n, p); |
| 409 | w_string(PyBytes_AS_STRING(utf8), n, p); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 410 | Py_DECREF(utf8); |
| 411 | } |
| 412 | else if (PyTuple_CheckExact(v)) { |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 413 | W_TYPE(TYPE_TUPLE, p); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 414 | n = PyTuple_Size(v); |
Serhiy Storchaka | 7e01911 | 2013-02-13 12:08:15 +0200 | [diff] [blame] | 415 | W_SIZE(n, p); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 416 | for (i = 0; i < n; i++) { |
| 417 | w_object(PyTuple_GET_ITEM(v, i), p); |
| 418 | } |
| 419 | } |
| 420 | else if (PyList_CheckExact(v)) { |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 421 | W_TYPE(TYPE_LIST, p); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 422 | n = PyList_GET_SIZE(v); |
Serhiy Storchaka | 7e01911 | 2013-02-13 12:08:15 +0200 | [diff] [blame] | 423 | W_SIZE(n, p); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 424 | for (i = 0; i < n; i++) { |
| 425 | w_object(PyList_GET_ITEM(v, i), p); |
| 426 | } |
| 427 | } |
| 428 | else if (PyDict_CheckExact(v)) { |
| 429 | Py_ssize_t pos; |
| 430 | PyObject *key, *value; |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 431 | W_TYPE(TYPE_DICT, p); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 432 | /* This one is NULL object terminated! */ |
| 433 | pos = 0; |
| 434 | while (PyDict_Next(v, &pos, &key, &value)) { |
| 435 | w_object(key, p); |
| 436 | w_object(value, p); |
| 437 | } |
| 438 | w_object((PyObject *)NULL, p); |
| 439 | } |
| 440 | else if (PyAnySet_CheckExact(v)) { |
| 441 | PyObject *value, *it; |
Raymond Hettinger | a422c34 | 2005-01-11 03:03:27 +0000 | [diff] [blame] | 442 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 443 | if (PyObject_TypeCheck(v, &PySet_Type)) |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 444 | W_TYPE(TYPE_SET, p); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 445 | else |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 446 | W_TYPE(TYPE_FROZENSET, p); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 447 | n = PyObject_Size(v); |
| 448 | if (n == -1) { |
| 449 | p->depth--; |
| 450 | p->error = WFERR_UNMARSHALLABLE; |
| 451 | return; |
| 452 | } |
Serhiy Storchaka | 7e01911 | 2013-02-13 12:08:15 +0200 | [diff] [blame] | 453 | W_SIZE(n, p); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 454 | it = PyObject_GetIter(v); |
| 455 | if (it == NULL) { |
| 456 | p->depth--; |
| 457 | p->error = WFERR_UNMARSHALLABLE; |
| 458 | return; |
| 459 | } |
| 460 | while ((value = PyIter_Next(it)) != NULL) { |
| 461 | w_object(value, p); |
| 462 | Py_DECREF(value); |
| 463 | } |
| 464 | Py_DECREF(it); |
| 465 | if (PyErr_Occurred()) { |
| 466 | p->depth--; |
| 467 | p->error = WFERR_UNMARSHALLABLE; |
| 468 | return; |
| 469 | } |
| 470 | } |
| 471 | else if (PyCode_Check(v)) { |
| 472 | PyCodeObject *co = (PyCodeObject *)v; |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 473 | W_TYPE(TYPE_CODE, p); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 474 | w_long(co->co_argcount, p); |
| 475 | w_long(co->co_kwonlyargcount, p); |
| 476 | w_long(co->co_nlocals, p); |
| 477 | w_long(co->co_stacksize, p); |
| 478 | w_long(co->co_flags, p); |
| 479 | w_object(co->co_code, p); |
| 480 | w_object(co->co_consts, p); |
| 481 | w_object(co->co_names, p); |
| 482 | w_object(co->co_varnames, p); |
| 483 | w_object(co->co_freevars, p); |
| 484 | w_object(co->co_cellvars, p); |
| 485 | w_object(co->co_filename, p); |
| 486 | w_object(co->co_name, p); |
| 487 | w_long(co->co_firstlineno, p); |
| 488 | w_object(co->co_lnotab, p); |
| 489 | } |
| 490 | else if (PyObject_CheckBuffer(v)) { |
| 491 | /* Write unknown buffer-style objects as a string */ |
| 492 | char *s; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 493 | Py_buffer view; |
Antoine Pitrou | 679e9d3 | 2012-03-02 18:12:43 +0100 | [diff] [blame] | 494 | if (PyObject_GetBuffer(v, &view, PyBUF_SIMPLE) != 0) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 495 | w_byte(TYPE_UNKNOWN, p); |
Antoine Pitrou | 679e9d3 | 2012-03-02 18:12:43 +0100 | [diff] [blame] | 496 | p->depth--; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 497 | p->error = WFERR_UNMARSHALLABLE; |
Antoine Pitrou | 679e9d3 | 2012-03-02 18:12:43 +0100 | [diff] [blame] | 498 | return; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 499 | } |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 500 | W_TYPE(TYPE_STRING, p); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 501 | n = view.len; |
| 502 | s = view.buf; |
Serhiy Storchaka | 7e01911 | 2013-02-13 12:08:15 +0200 | [diff] [blame] | 503 | W_SIZE(n, p); |
| 504 | w_string(s, n, p); |
Antoine Pitrou | 679e9d3 | 2012-03-02 18:12:43 +0100 | [diff] [blame] | 505 | PyBuffer_Release(&view); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 506 | } |
| 507 | else { |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 508 | W_TYPE(TYPE_UNKNOWN, p); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 509 | p->error = WFERR_UNMARSHALLABLE; |
| 510 | } |
Guido van Rossum | dce2e3d | 1991-06-04 19:42:30 +0000 | [diff] [blame] | 511 | } |
| 512 | |
Martin v. Löwis | ef82d2f | 2004-06-27 16:51:46 +0000 | [diff] [blame] | 513 | /* version currently has no effect for writing longs. */ |
Guido van Rossum | 0b0db8e | 1993-01-21 16:07:51 +0000 | [diff] [blame] | 514 | void |
Martin v. Löwis | ef82d2f | 2004-06-27 16:51:46 +0000 | [diff] [blame] | 515 | PyMarshal_WriteLongToFile(long x, FILE *fp, int version) |
Guido van Rossum | dce2e3d | 1991-06-04 19:42:30 +0000 | [diff] [blame] | 516 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 517 | WFILE wf; |
| 518 | wf.fp = fp; |
| 519 | wf.error = WFERR_OK; |
| 520 | wf.depth = 0; |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 521 | wf.refs = NULL; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 522 | wf.version = version; |
| 523 | w_long(x, &wf); |
Guido van Rossum | 0b0db8e | 1993-01-21 16:07:51 +0000 | [diff] [blame] | 524 | } |
| 525 | |
| 526 | void |
Martin v. Löwis | ef82d2f | 2004-06-27 16:51:46 +0000 | [diff] [blame] | 527 | PyMarshal_WriteObjectToFile(PyObject *x, FILE *fp, int version) |
Guido van Rossum | 0b0db8e | 1993-01-21 16:07:51 +0000 | [diff] [blame] | 528 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 529 | WFILE wf; |
| 530 | wf.fp = fp; |
| 531 | wf.error = WFERR_OK; |
| 532 | wf.depth = 0; |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 533 | if (version >= 3) { |
| 534 | if ((wf.refs = PyDict_New()) == NULL) |
| 535 | return; /* caller mush check PyErr_Occurred() */ |
| 536 | } else |
| 537 | wf.refs = NULL; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 538 | wf.version = version; |
| 539 | w_object(x, &wf); |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 540 | Py_XDECREF(wf.refs); |
Guido van Rossum | 0b0db8e | 1993-01-21 16:07:51 +0000 | [diff] [blame] | 541 | } |
| 542 | |
| 543 | typedef WFILE RFILE; /* Same struct with different invariants */ |
| 544 | |
Guido van Rossum | d59da4b | 2007-05-22 18:11:13 +0000 | [diff] [blame] | 545 | #define rs_byte(p) (((p)->ptr < (p)->end) ? (unsigned char)*(p)->ptr++ : EOF) |
Guido van Rossum | 8d617a6 | 1995-03-09 12:12:11 +0000 | [diff] [blame] | 546 | |
Serhiy Storchaka | 7e01911 | 2013-02-13 12:08:15 +0200 | [diff] [blame] | 547 | static Py_ssize_t |
| 548 | r_string(char *s, Py_ssize_t n, RFILE *p) |
Guido van Rossum | 0b0db8e | 1993-01-21 16:07:51 +0000 | [diff] [blame] | 549 | { |
Éric Araujo | 6c0ba44 | 2011-07-26 17:23:57 +0200 | [diff] [blame] | 550 | char *ptr; |
Serhiy Storchaka | 7e01911 | 2013-02-13 12:08:15 +0200 | [diff] [blame] | 551 | Py_ssize_t read, left; |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 552 | |
| 553 | if (!p->readable) { |
| 554 | if (p->fp != NULL) |
| 555 | /* The result fits into int because it must be <=n. */ |
Serhiy Storchaka | 7e01911 | 2013-02-13 12:08:15 +0200 | [diff] [blame] | 556 | read = fread(s, 1, n, p->fp); |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 557 | else { |
Serhiy Storchaka | 7e01911 | 2013-02-13 12:08:15 +0200 | [diff] [blame] | 558 | left = p->end - p->ptr; |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 559 | read = (left < n) ? left : n; |
| 560 | memcpy(s, p->ptr, read); |
| 561 | p->ptr += read; |
| 562 | } |
| 563 | } |
| 564 | else { |
Martin v. Löwis | bd928fe | 2011-10-14 10:20:37 +0200 | [diff] [blame] | 565 | _Py_IDENTIFIER(read); |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 566 | |
Serhiy Storchaka | 5a1f152 | 2013-02-13 12:11:03 +0200 | [diff] [blame] | 567 | PyObject *data = _PyObject_CallMethodId(p->readable, &PyId_read, "n", n); |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 568 | read = 0; |
| 569 | if (data != NULL) { |
| 570 | if (!PyBytes_Check(data)) { |
| 571 | PyErr_Format(PyExc_TypeError, |
| 572 | "f.read() returned not bytes but %.100s", |
| 573 | data->ob_type->tp_name); |
| 574 | } |
| 575 | else { |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 576 | read = (int)PyBytes_GET_SIZE(data); |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 577 | if (read > 0) { |
| 578 | ptr = PyBytes_AS_STRING(data); |
| 579 | memcpy(s, ptr, read); |
| 580 | } |
| 581 | } |
| 582 | Py_DECREF(data); |
| 583 | } |
| 584 | } |
| 585 | if (!PyErr_Occurred() && (read < n)) { |
| 586 | PyErr_SetString(PyExc_EOFError, "EOF read where not expected"); |
| 587 | } |
| 588 | return read; |
| 589 | } |
| 590 | |
| 591 | |
| 592 | static int |
| 593 | r_byte(RFILE *p) |
| 594 | { |
| 595 | int c = EOF; |
| 596 | unsigned char ch; |
Serhiy Storchaka | 7e01911 | 2013-02-13 12:08:15 +0200 | [diff] [blame] | 597 | Py_ssize_t n; |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 598 | |
| 599 | if (!p->readable) |
| 600 | c = p->fp ? getc(p->fp) : rs_byte(p); |
| 601 | else { |
| 602 | n = r_string((char *) &ch, 1, p); |
| 603 | if (n > 0) |
| 604 | c = ch; |
| 605 | } |
| 606 | return c; |
Guido van Rossum | 0b0db8e | 1993-01-21 16:07:51 +0000 | [diff] [blame] | 607 | } |
| 608 | |
| 609 | static int |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 610 | r_short(RFILE *p) |
Guido van Rossum | 0b0db8e | 1993-01-21 16:07:51 +0000 | [diff] [blame] | 611 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 612 | register short x; |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 613 | unsigned char buffer[2]; |
| 614 | |
| 615 | r_string((char *) buffer, 2, p); |
| 616 | x = buffer[0]; |
| 617 | x |= buffer[1] << 8; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 618 | /* Sign-extension, in case short greater than 16 bits */ |
| 619 | x |= -(x & 0x8000); |
| 620 | return x; |
Guido van Rossum | dce2e3d | 1991-06-04 19:42:30 +0000 | [diff] [blame] | 621 | } |
| 622 | |
Guido van Rossum | 0b0db8e | 1993-01-21 16:07:51 +0000 | [diff] [blame] | 623 | static long |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 624 | r_long(RFILE *p) |
Guido van Rossum | dce2e3d | 1991-06-04 19:42:30 +0000 | [diff] [blame] | 625 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 626 | register long x; |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 627 | unsigned char buffer[4]; |
| 628 | |
| 629 | r_string((char *) buffer, 4, p); |
| 630 | x = buffer[0]; |
| 631 | x |= (long)buffer[1] << 8; |
| 632 | x |= (long)buffer[2] << 16; |
| 633 | x |= (long)buffer[3] << 24; |
Guido van Rossum | c1547d9 | 1996-12-10 15:39:04 +0000 | [diff] [blame] | 634 | #if SIZEOF_LONG > 4 |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 635 | /* Sign extension for 64-bit machines */ |
| 636 | x |= -(x & 0x80000000L); |
Guido van Rossum | c1547d9 | 1996-12-10 15:39:04 +0000 | [diff] [blame] | 637 | #endif |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 638 | return x; |
Guido van Rossum | b0c168c | 1996-12-05 23:15:02 +0000 | [diff] [blame] | 639 | } |
| 640 | |
Tim Peters | 8211237 | 2001-08-29 02:28:42 +0000 | [diff] [blame] | 641 | /* r_long64 deals with the TYPE_INT64 code. On a machine with |
| 642 | sizeof(long) > 4, it returns a Python int object, else a Python long |
| 643 | object. Note that w_long64 writes out TYPE_INT if 32 bits is enough, |
| 644 | so there's no inefficiency here in returning a PyLong on 32-bit boxes |
| 645 | for everything written via TYPE_INT64 (i.e., if an int is written via |
| 646 | TYPE_INT64, it *needs* more than 32 bits). |
| 647 | */ |
| 648 | static PyObject * |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 649 | r_long64(RFILE *p) |
Guido van Rossum | b0c168c | 1996-12-05 23:15:02 +0000 | [diff] [blame] | 650 | { |
Éric Araujo | 6c0ba44 | 2011-07-26 17:23:57 +0200 | [diff] [blame] | 651 | PyObject *result = NULL; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 652 | long lo4 = r_long(p); |
| 653 | long hi4 = r_long(p); |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 654 | |
| 655 | if (!PyErr_Occurred()) { |
Guido van Rossum | c1547d9 | 1996-12-10 15:39:04 +0000 | [diff] [blame] | 656 | #if SIZEOF_LONG > 4 |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 657 | long x = (hi4 << 32) | (lo4 & 0xFFFFFFFFL); |
| 658 | result = PyLong_FromLong(x); |
Guido van Rossum | c1547d9 | 1996-12-10 15:39:04 +0000 | [diff] [blame] | 659 | #else |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 660 | unsigned char buf[8]; |
| 661 | int one = 1; |
| 662 | int is_little_endian = (int)*(char*)&one; |
| 663 | if (is_little_endian) { |
| 664 | memcpy(buf, &lo4, 4); |
| 665 | memcpy(buf+4, &hi4, 4); |
| 666 | } |
| 667 | else { |
| 668 | memcpy(buf, &hi4, 4); |
| 669 | memcpy(buf+4, &lo4, 4); |
| 670 | } |
| 671 | result = _PyLong_FromByteArray(buf, 8, is_little_endian, 1); |
Guido van Rossum | c1547d9 | 1996-12-10 15:39:04 +0000 | [diff] [blame] | 672 | #endif |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 673 | } |
| 674 | return result; |
Guido van Rossum | dce2e3d | 1991-06-04 19:42:30 +0000 | [diff] [blame] | 675 | } |
| 676 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 677 | static PyObject * |
Mark Dickinson | bd79264 | 2009-03-18 20:06:12 +0000 | [diff] [blame] | 678 | r_PyLong(RFILE *p) |
| 679 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 680 | PyLongObject *ob; |
Serhiy Storchaka | 7e01911 | 2013-02-13 12:08:15 +0200 | [diff] [blame] | 681 | long n, size, i; |
| 682 | int j, md, shorts_in_top_digit; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 683 | digit d; |
Mark Dickinson | bd79264 | 2009-03-18 20:06:12 +0000 | [diff] [blame] | 684 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 685 | n = r_long(p); |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 686 | if (PyErr_Occurred()) |
| 687 | return NULL; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 688 | if (n == 0) |
| 689 | return (PyObject *)_PyLong_New(0); |
Serhiy Storchaka | 7e01911 | 2013-02-13 12:08:15 +0200 | [diff] [blame] | 690 | if (n < -SIZE32_MAX || n > SIZE32_MAX) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 691 | PyErr_SetString(PyExc_ValueError, |
| 692 | "bad marshal data (long size out of range)"); |
| 693 | return NULL; |
| 694 | } |
Mark Dickinson | bd79264 | 2009-03-18 20:06:12 +0000 | [diff] [blame] | 695 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 696 | size = 1 + (ABS(n) - 1) / PyLong_MARSHAL_RATIO; |
| 697 | shorts_in_top_digit = 1 + (ABS(n) - 1) % PyLong_MARSHAL_RATIO; |
| 698 | ob = _PyLong_New(size); |
| 699 | if (ob == NULL) |
| 700 | return NULL; |
| 701 | Py_SIZE(ob) = n > 0 ? size : -size; |
Mark Dickinson | bd79264 | 2009-03-18 20:06:12 +0000 | [diff] [blame] | 702 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 703 | for (i = 0; i < size-1; i++) { |
| 704 | d = 0; |
| 705 | for (j=0; j < PyLong_MARSHAL_RATIO; j++) { |
| 706 | md = r_short(p); |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 707 | if (PyErr_Occurred()) |
| 708 | break; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 709 | if (md < 0 || md > PyLong_MARSHAL_BASE) |
| 710 | goto bad_digit; |
| 711 | d += (digit)md << j*PyLong_MARSHAL_SHIFT; |
| 712 | } |
| 713 | ob->ob_digit[i] = d; |
| 714 | } |
| 715 | d = 0; |
| 716 | for (j=0; j < shorts_in_top_digit; j++) { |
| 717 | md = r_short(p); |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 718 | if (PyErr_Occurred()) |
| 719 | break; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 720 | if (md < 0 || md > PyLong_MARSHAL_BASE) |
| 721 | goto bad_digit; |
| 722 | /* topmost marshal digit should be nonzero */ |
| 723 | if (md == 0 && j == shorts_in_top_digit - 1) { |
| 724 | Py_DECREF(ob); |
| 725 | PyErr_SetString(PyExc_ValueError, |
| 726 | "bad marshal data (unnormalized long data)"); |
| 727 | return NULL; |
| 728 | } |
| 729 | d += (digit)md << j*PyLong_MARSHAL_SHIFT; |
| 730 | } |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 731 | if (PyErr_Occurred()) { |
| 732 | Py_DECREF(ob); |
| 733 | return NULL; |
| 734 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 735 | /* top digit should be nonzero, else the resulting PyLong won't be |
| 736 | normalized */ |
| 737 | ob->ob_digit[size-1] = d; |
| 738 | return (PyObject *)ob; |
Mark Dickinson | bd79264 | 2009-03-18 20:06:12 +0000 | [diff] [blame] | 739 | bad_digit: |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 740 | Py_DECREF(ob); |
| 741 | PyErr_SetString(PyExc_ValueError, |
| 742 | "bad marshal data (digit out of range in long)"); |
| 743 | return NULL; |
Mark Dickinson | bd79264 | 2009-03-18 20:06:12 +0000 | [diff] [blame] | 744 | } |
| 745 | |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 746 | /* allocate the reflist index */ |
| 747 | static PyObject * |
| 748 | r_ref_reserve(PyObject *o, Py_ssize_t *idx, int flag, RFILE *p) |
| 749 | { |
| 750 | if (flag) { /* currently only FLAG_REF is defined */ |
| 751 | *idx = PyList_Size(p->refs); |
| 752 | if (*idx < 0) |
| 753 | goto err; |
| 754 | if (*idx >= 0x7ffffffe) { |
| 755 | PyErr_SetString(PyExc_ValueError, "bad marshal data (index list too large)"); |
| 756 | goto err; |
| 757 | } |
| 758 | if (PyList_Append(p->refs, Py_None) < 0) |
| 759 | goto err; |
| 760 | } else |
| 761 | *idx = 0; |
| 762 | return o; |
| 763 | err: |
| 764 | Py_XDECREF(o); /* release the new object */ |
| 765 | *idx = -1; |
| 766 | return NULL; |
| 767 | } |
| 768 | |
| 769 | /* insert actual object to the reflist */ |
| 770 | static PyObject * |
| 771 | r_ref_insert(PyObject *o, Py_ssize_t idx, int flag, RFILE *p) |
| 772 | { |
| 773 | if (o && (flag & FLAG_REF)) { |
| 774 | if (PyList_SetItem(p->refs, idx, o) < 0) { |
| 775 | Py_DECREF(o); /* release the new object */ |
| 776 | return NULL; |
| 777 | } else { |
| 778 | Py_INCREF(o); /* a reference for the list */ |
| 779 | } |
| 780 | } |
| 781 | return o; |
| 782 | } |
| 783 | |
| 784 | /* combination of both above, used when an object can be |
| 785 | * created whenever it is seen in the file, as opposed to |
| 786 | * after having loaded its sub-objects. |
| 787 | */ |
| 788 | static PyObject * |
| 789 | r_ref(PyObject *o, int flag, RFILE *p) |
| 790 | { |
| 791 | if (o && (flag & FLAG_REF)) { |
| 792 | if (PyList_Append(p->refs, o) < 0) { |
| 793 | Py_DECREF(o); /* release the new object */ |
| 794 | return NULL; |
| 795 | } |
| 796 | } |
| 797 | return o; |
| 798 | } |
Mark Dickinson | bd79264 | 2009-03-18 20:06:12 +0000 | [diff] [blame] | 799 | |
| 800 | static PyObject * |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 801 | r_object(RFILE *p) |
Guido van Rossum | dce2e3d | 1991-06-04 19:42:30 +0000 | [diff] [blame] | 802 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 803 | /* NULL is a valid return value, it does not necessarily means that |
| 804 | an exception is set. */ |
| 805 | PyObject *v, *v2; |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 806 | Py_ssize_t idx; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 807 | long i, n; |
| 808 | int type = r_byte(p); |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 809 | int flag; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 810 | PyObject *retval; |
Guido van Rossum | d59da4b | 2007-05-22 18:11:13 +0000 | [diff] [blame] | 811 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 812 | p->depth++; |
Guido van Rossum | d59da4b | 2007-05-22 18:11:13 +0000 | [diff] [blame] | 813 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 814 | if (p->depth > MAX_MARSHAL_STACK_DEPTH) { |
| 815 | p->depth--; |
| 816 | PyErr_SetString(PyExc_ValueError, "recursion limit exceeded"); |
| 817 | return NULL; |
| 818 | } |
Tim Peters | d9b9ac8 | 2001-01-28 00:27:39 +0000 | [diff] [blame] | 819 | |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 820 | flag = type & FLAG_REF; |
| 821 | type = type & ~FLAG_REF; |
| 822 | |
| 823 | #define R_REF(O) do{\ |
| 824 | O = r_ref(O, flag, p);\ |
| 825 | } while (0) |
| 826 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 827 | switch (type) { |
Tim Peters | d9b9ac8 | 2001-01-28 00:27:39 +0000 | [diff] [blame] | 828 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 829 | case EOF: |
| 830 | PyErr_SetString(PyExc_EOFError, |
| 831 | "EOF read where object expected"); |
| 832 | retval = NULL; |
| 833 | break; |
Tim Peters | d9b9ac8 | 2001-01-28 00:27:39 +0000 | [diff] [blame] | 834 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 835 | case TYPE_NULL: |
| 836 | retval = NULL; |
| 837 | break; |
Tim Peters | d9b9ac8 | 2001-01-28 00:27:39 +0000 | [diff] [blame] | 838 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 839 | case TYPE_NONE: |
| 840 | Py_INCREF(Py_None); |
| 841 | retval = Py_None; |
| 842 | break; |
Tim Peters | d9b9ac8 | 2001-01-28 00:27:39 +0000 | [diff] [blame] | 843 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 844 | case TYPE_STOPITER: |
| 845 | Py_INCREF(PyExc_StopIteration); |
| 846 | retval = PyExc_StopIteration; |
| 847 | break; |
Tim Peters | 5ca576e | 2001-06-18 22:08:13 +0000 | [diff] [blame] | 848 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 849 | case TYPE_ELLIPSIS: |
| 850 | Py_INCREF(Py_Ellipsis); |
| 851 | retval = Py_Ellipsis; |
| 852 | break; |
Tim Peters | d9b9ac8 | 2001-01-28 00:27:39 +0000 | [diff] [blame] | 853 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 854 | case TYPE_FALSE: |
| 855 | Py_INCREF(Py_False); |
| 856 | retval = Py_False; |
| 857 | break; |
Guido van Rossum | 77f6a65 | 2002-04-03 22:41:51 +0000 | [diff] [blame] | 858 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 859 | case TYPE_TRUE: |
| 860 | Py_INCREF(Py_True); |
| 861 | retval = Py_True; |
| 862 | break; |
Guido van Rossum | 77f6a65 | 2002-04-03 22:41:51 +0000 | [diff] [blame] | 863 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 864 | case TYPE_INT: |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 865 | n = r_long(p); |
| 866 | retval = PyErr_Occurred() ? NULL : PyLong_FromLong(n); |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 867 | R_REF(retval); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 868 | break; |
Tim Peters | d9b9ac8 | 2001-01-28 00:27:39 +0000 | [diff] [blame] | 869 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 870 | case TYPE_INT64: |
| 871 | retval = r_long64(p); |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 872 | R_REF(retval); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 873 | break; |
Tim Peters | d9b9ac8 | 2001-01-28 00:27:39 +0000 | [diff] [blame] | 874 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 875 | case TYPE_LONG: |
| 876 | retval = r_PyLong(p); |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 877 | R_REF(retval); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 878 | break; |
Tim Peters | d9b9ac8 | 2001-01-28 00:27:39 +0000 | [diff] [blame] | 879 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 880 | case TYPE_FLOAT: |
| 881 | { |
| 882 | char buf[256]; |
| 883 | double dx; |
| 884 | retval = NULL; |
| 885 | n = r_byte(p); |
Serhiy Storchaka | 7e01911 | 2013-02-13 12:08:15 +0200 | [diff] [blame] | 886 | if (n == EOF || r_string(buf, n, p) != n) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 887 | PyErr_SetString(PyExc_EOFError, |
| 888 | "EOF read where object expected"); |
| 889 | break; |
| 890 | } |
| 891 | buf[n] = '\0'; |
| 892 | dx = PyOS_string_to_double(buf, NULL, NULL); |
| 893 | if (dx == -1.0 && PyErr_Occurred()) |
| 894 | break; |
| 895 | retval = PyFloat_FromDouble(dx); |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 896 | R_REF(retval); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 897 | break; |
| 898 | } |
Tim Peters | d9b9ac8 | 2001-01-28 00:27:39 +0000 | [diff] [blame] | 899 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 900 | case TYPE_BINARY_FLOAT: |
| 901 | { |
| 902 | unsigned char buf[8]; |
| 903 | double x; |
| 904 | if (r_string((char*)buf, 8, p) != 8) { |
| 905 | PyErr_SetString(PyExc_EOFError, |
| 906 | "EOF read where object expected"); |
| 907 | retval = NULL; |
| 908 | break; |
| 909 | } |
| 910 | x = _PyFloat_Unpack8(buf, 1); |
| 911 | if (x == -1.0 && PyErr_Occurred()) { |
| 912 | retval = NULL; |
| 913 | break; |
| 914 | } |
| 915 | retval = PyFloat_FromDouble(x); |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 916 | R_REF(retval); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 917 | break; |
| 918 | } |
Michael W. Hudson | df88846 | 2005-06-03 14:41:55 +0000 | [diff] [blame] | 919 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 920 | case TYPE_COMPLEX: |
| 921 | { |
| 922 | char buf[256]; |
| 923 | Py_complex c; |
| 924 | retval = NULL; |
| 925 | n = r_byte(p); |
Serhiy Storchaka | 7e01911 | 2013-02-13 12:08:15 +0200 | [diff] [blame] | 926 | if (n == EOF || r_string(buf, n, p) != n) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 927 | PyErr_SetString(PyExc_EOFError, |
| 928 | "EOF read where object expected"); |
| 929 | break; |
| 930 | } |
| 931 | buf[n] = '\0'; |
| 932 | c.real = PyOS_string_to_double(buf, NULL, NULL); |
| 933 | if (c.real == -1.0 && PyErr_Occurred()) |
| 934 | break; |
| 935 | n = r_byte(p); |
Serhiy Storchaka | 7e01911 | 2013-02-13 12:08:15 +0200 | [diff] [blame] | 936 | if (n == EOF || r_string(buf, n, p) != n) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 937 | PyErr_SetString(PyExc_EOFError, |
| 938 | "EOF read where object expected"); |
| 939 | break; |
| 940 | } |
| 941 | buf[n] = '\0'; |
| 942 | c.imag = PyOS_string_to_double(buf, NULL, NULL); |
| 943 | if (c.imag == -1.0 && PyErr_Occurred()) |
| 944 | break; |
| 945 | retval = PyComplex_FromCComplex(c); |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 946 | R_REF(retval); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 947 | break; |
| 948 | } |
Michael W. Hudson | df88846 | 2005-06-03 14:41:55 +0000 | [diff] [blame] | 949 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 950 | case TYPE_BINARY_COMPLEX: |
| 951 | { |
| 952 | unsigned char buf[8]; |
| 953 | Py_complex c; |
| 954 | if (r_string((char*)buf, 8, p) != 8) { |
| 955 | PyErr_SetString(PyExc_EOFError, |
| 956 | "EOF read where object expected"); |
| 957 | retval = NULL; |
| 958 | break; |
| 959 | } |
| 960 | c.real = _PyFloat_Unpack8(buf, 1); |
| 961 | if (c.real == -1.0 && PyErr_Occurred()) { |
| 962 | retval = NULL; |
| 963 | break; |
| 964 | } |
| 965 | if (r_string((char*)buf, 8, p) != 8) { |
| 966 | PyErr_SetString(PyExc_EOFError, |
| 967 | "EOF read where object expected"); |
| 968 | retval = NULL; |
| 969 | break; |
| 970 | } |
| 971 | c.imag = _PyFloat_Unpack8(buf, 1); |
| 972 | if (c.imag == -1.0 && PyErr_Occurred()) { |
| 973 | retval = NULL; |
| 974 | break; |
| 975 | } |
| 976 | retval = PyComplex_FromCComplex(c); |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 977 | R_REF(retval); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 978 | break; |
| 979 | } |
Tim Peters | d9b9ac8 | 2001-01-28 00:27:39 +0000 | [diff] [blame] | 980 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 981 | case TYPE_STRING: |
| 982 | n = r_long(p); |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 983 | if (PyErr_Occurred()) { |
| 984 | retval = NULL; |
| 985 | break; |
| 986 | } |
Serhiy Storchaka | 7e01911 | 2013-02-13 12:08:15 +0200 | [diff] [blame] | 987 | if (n < 0 || n > SIZE32_MAX) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 988 | PyErr_SetString(PyExc_ValueError, "bad marshal data (string size out of range)"); |
| 989 | retval = NULL; |
| 990 | break; |
| 991 | } |
| 992 | v = PyBytes_FromStringAndSize((char *)NULL, n); |
| 993 | if (v == NULL) { |
| 994 | retval = NULL; |
| 995 | break; |
| 996 | } |
Serhiy Storchaka | 7e01911 | 2013-02-13 12:08:15 +0200 | [diff] [blame] | 997 | if (r_string(PyBytes_AS_STRING(v), n, p) != n) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 998 | Py_DECREF(v); |
| 999 | PyErr_SetString(PyExc_EOFError, |
| 1000 | "EOF read where object expected"); |
| 1001 | retval = NULL; |
| 1002 | break; |
| 1003 | } |
| 1004 | retval = v; |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 1005 | R_REF(retval); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1006 | break; |
Tim Peters | d9b9ac8 | 2001-01-28 00:27:39 +0000 | [diff] [blame] | 1007 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1008 | case TYPE_UNICODE: |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 1009 | case TYPE_INTERNED: |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1010 | { |
| 1011 | char *buffer; |
Guido van Rossum | c279b53 | 2000-03-10 23:03:02 +0000 | [diff] [blame] | 1012 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1013 | n = r_long(p); |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 1014 | if (PyErr_Occurred()) { |
| 1015 | retval = NULL; |
| 1016 | break; |
| 1017 | } |
Serhiy Storchaka | 7e01911 | 2013-02-13 12:08:15 +0200 | [diff] [blame] | 1018 | if (n < 0 || n > SIZE32_MAX) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1019 | PyErr_SetString(PyExc_ValueError, "bad marshal data (unicode size out of range)"); |
| 1020 | retval = NULL; |
| 1021 | break; |
| 1022 | } |
| 1023 | buffer = PyMem_NEW(char, n); |
| 1024 | if (buffer == NULL) { |
| 1025 | retval = PyErr_NoMemory(); |
| 1026 | break; |
| 1027 | } |
Serhiy Storchaka | 7e01911 | 2013-02-13 12:08:15 +0200 | [diff] [blame] | 1028 | if (r_string(buffer, n, p) != n) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1029 | PyMem_DEL(buffer); |
| 1030 | PyErr_SetString(PyExc_EOFError, |
| 1031 | "EOF read where object expected"); |
| 1032 | retval = NULL; |
| 1033 | break; |
| 1034 | } |
| 1035 | v = PyUnicode_DecodeUTF8(buffer, n, "surrogatepass"); |
| 1036 | PyMem_DEL(buffer); |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 1037 | if (type == TYPE_INTERNED) |
| 1038 | PyUnicode_InternInPlace(&v); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1039 | retval = v; |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 1040 | R_REF(retval); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1041 | break; |
| 1042 | } |
Tim Peters | d9b9ac8 | 2001-01-28 00:27:39 +0000 | [diff] [blame] | 1043 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1044 | case TYPE_TUPLE: |
| 1045 | n = r_long(p); |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 1046 | if (PyErr_Occurred()) { |
| 1047 | retval = NULL; |
| 1048 | break; |
| 1049 | } |
Serhiy Storchaka | 7e01911 | 2013-02-13 12:08:15 +0200 | [diff] [blame] | 1050 | if (n < 0 || n > SIZE32_MAX) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1051 | PyErr_SetString(PyExc_ValueError, "bad marshal data (tuple size out of range)"); |
| 1052 | retval = NULL; |
| 1053 | break; |
| 1054 | } |
Serhiy Storchaka | 7e01911 | 2013-02-13 12:08:15 +0200 | [diff] [blame] | 1055 | v = PyTuple_New(n); |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 1056 | R_REF(v); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1057 | if (v == NULL) { |
| 1058 | retval = NULL; |
| 1059 | break; |
| 1060 | } |
| 1061 | for (i = 0; i < n; i++) { |
| 1062 | v2 = r_object(p); |
| 1063 | if ( v2 == NULL ) { |
| 1064 | if (!PyErr_Occurred()) |
| 1065 | PyErr_SetString(PyExc_TypeError, |
| 1066 | "NULL object in marshal data for tuple"); |
| 1067 | Py_DECREF(v); |
| 1068 | v = NULL; |
| 1069 | break; |
| 1070 | } |
Serhiy Storchaka | 7e01911 | 2013-02-13 12:08:15 +0200 | [diff] [blame] | 1071 | PyTuple_SET_ITEM(v, i, v2); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1072 | } |
| 1073 | retval = v; |
| 1074 | break; |
Tim Peters | d9b9ac8 | 2001-01-28 00:27:39 +0000 | [diff] [blame] | 1075 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1076 | case TYPE_LIST: |
| 1077 | n = r_long(p); |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 1078 | if (PyErr_Occurred()) { |
| 1079 | retval = NULL; |
| 1080 | break; |
| 1081 | } |
Serhiy Storchaka | 7e01911 | 2013-02-13 12:08:15 +0200 | [diff] [blame] | 1082 | if (n < 0 || n > SIZE32_MAX) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1083 | PyErr_SetString(PyExc_ValueError, "bad marshal data (list size out of range)"); |
| 1084 | retval = NULL; |
| 1085 | break; |
| 1086 | } |
Serhiy Storchaka | 7e01911 | 2013-02-13 12:08:15 +0200 | [diff] [blame] | 1087 | v = PyList_New(n); |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 1088 | R_REF(v); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1089 | if (v == NULL) { |
| 1090 | retval = NULL; |
| 1091 | break; |
| 1092 | } |
| 1093 | for (i = 0; i < n; i++) { |
| 1094 | v2 = r_object(p); |
| 1095 | if ( v2 == NULL ) { |
| 1096 | if (!PyErr_Occurred()) |
| 1097 | PyErr_SetString(PyExc_TypeError, |
| 1098 | "NULL object in marshal data for list"); |
| 1099 | Py_DECREF(v); |
| 1100 | v = NULL; |
| 1101 | break; |
| 1102 | } |
Serhiy Storchaka | 7e01911 | 2013-02-13 12:08:15 +0200 | [diff] [blame] | 1103 | PyList_SET_ITEM(v, i, v2); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1104 | } |
| 1105 | retval = v; |
| 1106 | break; |
Tim Peters | d9b9ac8 | 2001-01-28 00:27:39 +0000 | [diff] [blame] | 1107 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1108 | case TYPE_DICT: |
| 1109 | v = PyDict_New(); |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 1110 | R_REF(v); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1111 | if (v == NULL) { |
| 1112 | retval = NULL; |
| 1113 | break; |
| 1114 | } |
| 1115 | for (;;) { |
| 1116 | PyObject *key, *val; |
| 1117 | key = r_object(p); |
| 1118 | if (key == NULL) |
| 1119 | break; |
| 1120 | val = r_object(p); |
| 1121 | if (val != NULL) |
| 1122 | PyDict_SetItem(v, key, val); |
| 1123 | Py_DECREF(key); |
| 1124 | Py_XDECREF(val); |
| 1125 | } |
| 1126 | if (PyErr_Occurred()) { |
| 1127 | Py_DECREF(v); |
| 1128 | v = NULL; |
| 1129 | } |
| 1130 | retval = v; |
| 1131 | break; |
Tim Peters | d9b9ac8 | 2001-01-28 00:27:39 +0000 | [diff] [blame] | 1132 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1133 | case TYPE_SET: |
| 1134 | case TYPE_FROZENSET: |
| 1135 | n = r_long(p); |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 1136 | if (PyErr_Occurred()) { |
| 1137 | retval = NULL; |
| 1138 | break; |
| 1139 | } |
Serhiy Storchaka | 7e01911 | 2013-02-13 12:08:15 +0200 | [diff] [blame] | 1140 | if (n < 0 || n > SIZE32_MAX) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1141 | PyErr_SetString(PyExc_ValueError, "bad marshal data (set size out of range)"); |
| 1142 | retval = NULL; |
| 1143 | break; |
| 1144 | } |
| 1145 | v = (type == TYPE_SET) ? PySet_New(NULL) : PyFrozenSet_New(NULL); |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 1146 | /* must use delayed registration of frozensets because they must |
| 1147 | * be init with a refcount of 1 |
| 1148 | */ |
| 1149 | if (type == TYPE_SET) |
| 1150 | R_REF(v); |
| 1151 | else |
| 1152 | v = r_ref_reserve(v, &idx, flag, p); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1153 | if (v == NULL) { |
| 1154 | retval = NULL; |
| 1155 | break; |
| 1156 | } |
| 1157 | for (i = 0; i < n; i++) { |
| 1158 | v2 = r_object(p); |
| 1159 | if ( v2 == NULL ) { |
| 1160 | if (!PyErr_Occurred()) |
| 1161 | PyErr_SetString(PyExc_TypeError, |
| 1162 | "NULL object in marshal data for set"); |
| 1163 | Py_DECREF(v); |
| 1164 | v = NULL; |
| 1165 | break; |
| 1166 | } |
| 1167 | if (PySet_Add(v, v2) == -1) { |
| 1168 | Py_DECREF(v); |
| 1169 | Py_DECREF(v2); |
| 1170 | v = NULL; |
| 1171 | break; |
| 1172 | } |
| 1173 | Py_DECREF(v2); |
| 1174 | } |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 1175 | if (type != TYPE_SET) |
| 1176 | v = r_ref_insert(v, idx, flag, p); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1177 | retval = v; |
| 1178 | break; |
Raymond Hettinger | a422c34 | 2005-01-11 03:03:27 +0000 | [diff] [blame] | 1179 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1180 | case TYPE_CODE: |
| 1181 | { |
| 1182 | int argcount; |
| 1183 | int kwonlyargcount; |
| 1184 | int nlocals; |
| 1185 | int stacksize; |
| 1186 | int flags; |
| 1187 | PyObject *code = NULL; |
| 1188 | PyObject *consts = NULL; |
| 1189 | PyObject *names = NULL; |
| 1190 | PyObject *varnames = NULL; |
| 1191 | PyObject *freevars = NULL; |
| 1192 | PyObject *cellvars = NULL; |
| 1193 | PyObject *filename = NULL; |
| 1194 | PyObject *name = NULL; |
| 1195 | int firstlineno; |
| 1196 | PyObject *lnotab = NULL; |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 1197 | |
| 1198 | r_ref_reserve(NULL, &idx, flag, p); |
| 1199 | if (idx < 0) { |
| 1200 | retval = NULL; |
| 1201 | break; |
| 1202 | } |
Tim Peters | d9b9ac8 | 2001-01-28 00:27:39 +0000 | [diff] [blame] | 1203 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1204 | v = NULL; |
Michael W. Hudson | df88846 | 2005-06-03 14:41:55 +0000 | [diff] [blame] | 1205 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1206 | /* XXX ignore long->int overflows for now */ |
| 1207 | argcount = (int)r_long(p); |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 1208 | if (PyErr_Occurred()) |
| 1209 | goto code_error; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1210 | kwonlyargcount = (int)r_long(p); |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 1211 | if (PyErr_Occurred()) |
| 1212 | goto code_error; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1213 | nlocals = (int)r_long(p); |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 1214 | if (PyErr_Occurred()) |
| 1215 | goto code_error; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1216 | stacksize = (int)r_long(p); |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 1217 | if (PyErr_Occurred()) |
| 1218 | goto code_error; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1219 | flags = (int)r_long(p); |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 1220 | if (PyErr_Occurred()) |
| 1221 | goto code_error; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1222 | code = r_object(p); |
| 1223 | if (code == NULL) |
| 1224 | goto code_error; |
| 1225 | consts = r_object(p); |
| 1226 | if (consts == NULL) |
| 1227 | goto code_error; |
| 1228 | names = r_object(p); |
| 1229 | if (names == NULL) |
| 1230 | goto code_error; |
| 1231 | varnames = r_object(p); |
| 1232 | if (varnames == NULL) |
| 1233 | goto code_error; |
| 1234 | freevars = r_object(p); |
| 1235 | if (freevars == NULL) |
| 1236 | goto code_error; |
| 1237 | cellvars = r_object(p); |
| 1238 | if (cellvars == NULL) |
| 1239 | goto code_error; |
| 1240 | filename = r_object(p); |
| 1241 | if (filename == NULL) |
| 1242 | goto code_error; |
Benjamin Peterson | 43b0686 | 2011-05-27 09:08:01 -0500 | [diff] [blame] | 1243 | if (PyUnicode_CheckExact(filename)) { |
| 1244 | if (p->current_filename != NULL) { |
| 1245 | if (!PyUnicode_Compare(filename, p->current_filename)) { |
| 1246 | Py_DECREF(filename); |
| 1247 | Py_INCREF(p->current_filename); |
| 1248 | filename = p->current_filename; |
| 1249 | } |
| 1250 | } |
| 1251 | else { |
| 1252 | p->current_filename = filename; |
| 1253 | } |
| 1254 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1255 | name = r_object(p); |
| 1256 | if (name == NULL) |
| 1257 | goto code_error; |
| 1258 | firstlineno = (int)r_long(p); |
| 1259 | lnotab = r_object(p); |
| 1260 | if (lnotab == NULL) |
| 1261 | goto code_error; |
Michael W. Hudson | df88846 | 2005-06-03 14:41:55 +0000 | [diff] [blame] | 1262 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1263 | v = (PyObject *) PyCode_New( |
| 1264 | argcount, kwonlyargcount, |
| 1265 | nlocals, stacksize, flags, |
| 1266 | code, consts, names, varnames, |
| 1267 | freevars, cellvars, filename, name, |
| 1268 | firstlineno, lnotab); |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 1269 | v = r_ref_insert(v, idx, flag, p); |
Tim Peters | d9b9ac8 | 2001-01-28 00:27:39 +0000 | [diff] [blame] | 1270 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1271 | code_error: |
| 1272 | Py_XDECREF(code); |
| 1273 | Py_XDECREF(consts); |
| 1274 | Py_XDECREF(names); |
| 1275 | Py_XDECREF(varnames); |
| 1276 | Py_XDECREF(freevars); |
| 1277 | Py_XDECREF(cellvars); |
| 1278 | Py_XDECREF(filename); |
| 1279 | Py_XDECREF(name); |
| 1280 | Py_XDECREF(lnotab); |
| 1281 | } |
| 1282 | retval = v; |
| 1283 | break; |
Tim Peters | d9b9ac8 | 2001-01-28 00:27:39 +0000 | [diff] [blame] | 1284 | |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 1285 | case TYPE_REF: |
| 1286 | n = r_long(p); |
| 1287 | if (n < 0 || n >= PyList_GET_SIZE(p->refs)) { |
| 1288 | PyErr_SetString(PyExc_ValueError, "bad marshal data (invalid reference)"); |
| 1289 | retval = NULL; |
| 1290 | break; |
| 1291 | } |
| 1292 | v = PyList_GET_ITEM(p->refs, n); |
| 1293 | if (v == Py_None) { |
| 1294 | PyErr_SetString(PyExc_ValueError, "bad marshal data (invalid reference)"); |
| 1295 | retval = NULL; |
| 1296 | break; |
| 1297 | } |
| 1298 | Py_INCREF(v); |
| 1299 | retval = v; |
| 1300 | break; |
| 1301 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1302 | default: |
| 1303 | /* Bogus data got written, which isn't ideal. |
| 1304 | This will let you keep working and recover. */ |
| 1305 | PyErr_SetString(PyExc_ValueError, "bad marshal data (unknown type code)"); |
| 1306 | retval = NULL; |
| 1307 | break; |
| 1308 | |
| 1309 | } |
| 1310 | p->depth--; |
| 1311 | return retval; |
Guido van Rossum | dce2e3d | 1991-06-04 19:42:30 +0000 | [diff] [blame] | 1312 | } |
| 1313 | |
Neal Norwitz | d85c452 | 2004-06-13 20:31:49 +0000 | [diff] [blame] | 1314 | static PyObject * |
Armin Rigo | 01ab279 | 2004-03-26 15:09:27 +0000 | [diff] [blame] | 1315 | read_object(RFILE *p) |
| 1316 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1317 | PyObject *v; |
| 1318 | if (PyErr_Occurred()) { |
| 1319 | fprintf(stderr, "XXX readobject called with exception set\n"); |
| 1320 | return NULL; |
| 1321 | } |
| 1322 | v = r_object(p); |
| 1323 | if (v == NULL && !PyErr_Occurred()) |
| 1324 | PyErr_SetString(PyExc_TypeError, "NULL object in marshal data for object"); |
| 1325 | return v; |
Armin Rigo | 01ab279 | 2004-03-26 15:09:27 +0000 | [diff] [blame] | 1326 | } |
| 1327 | |
Guido van Rossum | b8cf3e6 | 2001-10-19 01:46:21 +0000 | [diff] [blame] | 1328 | int |
| 1329 | PyMarshal_ReadShortFromFile(FILE *fp) |
| 1330 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1331 | RFILE rf; |
| 1332 | assert(fp); |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 1333 | rf.readable = NULL; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1334 | rf.fp = fp; |
Benjamin Peterson | 43b0686 | 2011-05-27 09:08:01 -0500 | [diff] [blame] | 1335 | rf.current_filename = NULL; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1336 | rf.end = rf.ptr = NULL; |
| 1337 | return r_short(&rf); |
Guido van Rossum | b8cf3e6 | 2001-10-19 01:46:21 +0000 | [diff] [blame] | 1338 | } |
| 1339 | |
Guido van Rossum | 0b0db8e | 1993-01-21 16:07:51 +0000 | [diff] [blame] | 1340 | long |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 1341 | PyMarshal_ReadLongFromFile(FILE *fp) |
Guido van Rossum | 0b0db8e | 1993-01-21 16:07:51 +0000 | [diff] [blame] | 1342 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1343 | RFILE rf; |
| 1344 | rf.fp = fp; |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 1345 | rf.readable = NULL; |
Benjamin Peterson | 43b0686 | 2011-05-27 09:08:01 -0500 | [diff] [blame] | 1346 | rf.current_filename = NULL; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1347 | rf.ptr = rf.end = NULL; |
| 1348 | return r_long(&rf); |
Guido van Rossum | 0b0db8e | 1993-01-21 16:07:51 +0000 | [diff] [blame] | 1349 | } |
| 1350 | |
Tim Peters | 691e0e9 | 2001-01-18 04:39:16 +0000 | [diff] [blame] | 1351 | #ifdef HAVE_FSTAT |
| 1352 | /* Return size of file in bytes; < 0 if unknown. */ |
| 1353 | static off_t |
| 1354 | getfilesize(FILE *fp) |
| 1355 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1356 | struct stat st; |
| 1357 | if (fstat(fileno(fp), &st) != 0) |
| 1358 | return -1; |
| 1359 | else |
| 1360 | return st.st_size; |
Tim Peters | 691e0e9 | 2001-01-18 04:39:16 +0000 | [diff] [blame] | 1361 | } |
| 1362 | #endif |
Tim Peters | d9b9ac8 | 2001-01-28 00:27:39 +0000 | [diff] [blame] | 1363 | |
Tim Peters | 691e0e9 | 2001-01-18 04:39:16 +0000 | [diff] [blame] | 1364 | /* If we can get the size of the file up-front, and it's reasonably small, |
| 1365 | * read it in one gulp and delegate to ...FromString() instead. Much quicker |
| 1366 | * than reading a byte at a time from file; speeds .pyc imports. |
Tim Peters | d9b9ac8 | 2001-01-28 00:27:39 +0000 | [diff] [blame] | 1367 | * CAUTION: since this may read the entire remainder of the file, don't |
| 1368 | * call it unless you know you're done with the file. |
Tim Peters | 691e0e9 | 2001-01-18 04:39:16 +0000 | [diff] [blame] | 1369 | */ |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1370 | PyObject * |
Tim Peters | d9b9ac8 | 2001-01-28 00:27:39 +0000 | [diff] [blame] | 1371 | PyMarshal_ReadLastObjectFromFile(FILE *fp) |
Guido van Rossum | 0b0db8e | 1993-01-21 16:07:51 +0000 | [diff] [blame] | 1372 | { |
Antoine Pitrou | 5bc7ec9 | 2010-04-21 22:56:22 +0000 | [diff] [blame] | 1373 | /* REASONABLE_FILE_LIMIT is by defn something big enough for Tkinter.pyc. */ |
Tim Peters | 691e0e9 | 2001-01-18 04:39:16 +0000 | [diff] [blame] | 1374 | #define REASONABLE_FILE_LIMIT (1L << 18) |
Tim Peters | 691e0e9 | 2001-01-18 04:39:16 +0000 | [diff] [blame] | 1375 | #ifdef HAVE_FSTAT |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1376 | off_t filesize; |
| 1377 | filesize = getfilesize(fp); |
| 1378 | if (filesize > 0 && filesize <= REASONABLE_FILE_LIMIT) { |
| 1379 | char* pBuf = (char *)PyMem_MALLOC(filesize); |
| 1380 | if (pBuf != NULL) { |
Serhiy Storchaka | 7e01911 | 2013-02-13 12:08:15 +0200 | [diff] [blame] | 1381 | size_t n = fread(pBuf, 1, (size_t)filesize, fp); |
| 1382 | PyObject* v = PyMarshal_ReadObjectFromString(pBuf, n); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1383 | PyMem_FREE(pBuf); |
| 1384 | return v; |
| 1385 | } |
Tim Peters | d9b9ac8 | 2001-01-28 00:27:39 +0000 | [diff] [blame] | 1386 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1387 | } |
Tim Peters | 691e0e9 | 2001-01-18 04:39:16 +0000 | [diff] [blame] | 1388 | #endif |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1389 | /* We don't have fstat, or we do but the file is larger than |
| 1390 | * REASONABLE_FILE_LIMIT or malloc failed -- read a byte at a time. |
| 1391 | */ |
| 1392 | return PyMarshal_ReadObjectFromFile(fp); |
Tim Peters | d9b9ac8 | 2001-01-28 00:27:39 +0000 | [diff] [blame] | 1393 | |
Tim Peters | 691e0e9 | 2001-01-18 04:39:16 +0000 | [diff] [blame] | 1394 | #undef REASONABLE_FILE_LIMIT |
Guido van Rossum | 0b0db8e | 1993-01-21 16:07:51 +0000 | [diff] [blame] | 1395 | } |
| 1396 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1397 | PyObject * |
Tim Peters | d9b9ac8 | 2001-01-28 00:27:39 +0000 | [diff] [blame] | 1398 | PyMarshal_ReadObjectFromFile(FILE *fp) |
| 1399 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1400 | RFILE rf; |
| 1401 | PyObject *result; |
| 1402 | rf.fp = fp; |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 1403 | rf.readable = NULL; |
Benjamin Peterson | 43b0686 | 2011-05-27 09:08:01 -0500 | [diff] [blame] | 1404 | rf.current_filename = NULL; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1405 | rf.depth = 0; |
| 1406 | rf.ptr = rf.end = NULL; |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 1407 | rf.refs = PyList_New(0); |
| 1408 | if (rf.refs == NULL) |
| 1409 | return NULL; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1410 | result = r_object(&rf); |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 1411 | Py_DECREF(rf.refs); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1412 | return result; |
Tim Peters | d9b9ac8 | 2001-01-28 00:27:39 +0000 | [diff] [blame] | 1413 | } |
| 1414 | |
| 1415 | PyObject * |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 1416 | PyMarshal_ReadObjectFromString(char *str, Py_ssize_t len) |
Guido van Rossum | f56e3db | 1993-04-01 20:59:32 +0000 | [diff] [blame] | 1417 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1418 | RFILE rf; |
| 1419 | PyObject *result; |
| 1420 | rf.fp = NULL; |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 1421 | rf.readable = NULL; |
Benjamin Peterson | 43b0686 | 2011-05-27 09:08:01 -0500 | [diff] [blame] | 1422 | rf.current_filename = NULL; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1423 | rf.ptr = str; |
| 1424 | rf.end = str + len; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1425 | rf.depth = 0; |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 1426 | rf.refs = PyList_New(0); |
| 1427 | if (rf.refs == NULL) |
| 1428 | return NULL; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1429 | result = r_object(&rf); |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 1430 | Py_DECREF(rf.refs); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1431 | return result; |
Guido van Rossum | f56e3db | 1993-04-01 20:59:32 +0000 | [diff] [blame] | 1432 | } |
| 1433 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1434 | PyObject * |
Martin v. Löwis | ef82d2f | 2004-06-27 16:51:46 +0000 | [diff] [blame] | 1435 | PyMarshal_WriteObjectToString(PyObject *x, int version) |
Guido van Rossum | 3f3bb3d | 1996-08-19 22:07:17 +0000 | [diff] [blame] | 1436 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1437 | WFILE wf; |
Guido van Rossum | e6d3904 | 2007-05-09 00:01:30 +0000 | [diff] [blame] | 1438 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1439 | wf.fp = NULL; |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 1440 | wf.readable = NULL; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1441 | wf.str = PyBytes_FromStringAndSize((char *)NULL, 50); |
| 1442 | if (wf.str == NULL) |
| 1443 | return NULL; |
| 1444 | wf.ptr = PyBytes_AS_STRING((PyBytesObject *)wf.str); |
| 1445 | wf.end = wf.ptr + PyBytes_Size(wf.str); |
| 1446 | wf.error = WFERR_OK; |
| 1447 | wf.depth = 0; |
| 1448 | wf.version = version; |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 1449 | if (version >= 3) { |
| 1450 | if ((wf.refs = PyDict_New()) == NULL) |
| 1451 | return NULL; |
| 1452 | } else |
| 1453 | wf.refs = NULL; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1454 | w_object(x, &wf); |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 1455 | Py_XDECREF(wf.refs); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1456 | if (wf.str != NULL) { |
| 1457 | char *base = PyBytes_AS_STRING((PyBytesObject *)wf.str); |
| 1458 | if (wf.ptr - base > PY_SSIZE_T_MAX) { |
| 1459 | Py_DECREF(wf.str); |
| 1460 | PyErr_SetString(PyExc_OverflowError, |
| 1461 | "too much marshal data for a string"); |
| 1462 | return NULL; |
| 1463 | } |
| 1464 | if (_PyBytes_Resize(&wf.str, (Py_ssize_t)(wf.ptr - base)) < 0) |
| 1465 | return NULL; |
| 1466 | } |
| 1467 | if (wf.error != WFERR_OK) { |
| 1468 | Py_XDECREF(wf.str); |
| 1469 | if (wf.error == WFERR_NOMEMORY) |
| 1470 | PyErr_NoMemory(); |
| 1471 | else |
| 1472 | PyErr_SetString(PyExc_ValueError, |
| 1473 | (wf.error==WFERR_UNMARSHALLABLE)?"unmarshallable object" |
| 1474 | :"object too deeply nested to marshal"); |
| 1475 | return NULL; |
| 1476 | } |
Antoine Pitrou | 1c13f84 | 2012-03-02 18:22:23 +0100 | [diff] [blame] | 1477 | return wf.str; |
Guido van Rossum | 3f3bb3d | 1996-08-19 22:07:17 +0000 | [diff] [blame] | 1478 | } |
| 1479 | |
Guido van Rossum | 64b4552 | 1991-06-07 13:58:22 +0000 | [diff] [blame] | 1480 | /* And an interface for Python programs... */ |
Guido van Rossum | dce2e3d | 1991-06-04 19:42:30 +0000 | [diff] [blame] | 1481 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1482 | static PyObject * |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 1483 | marshal_dump(PyObject *self, PyObject *args) |
Guido van Rossum | dce2e3d | 1991-06-04 19:42:30 +0000 | [diff] [blame] | 1484 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1485 | /* XXX Quick hack -- need to do this differently */ |
| 1486 | PyObject *x; |
| 1487 | PyObject *f; |
| 1488 | int version = Py_MARSHAL_VERSION; |
| 1489 | PyObject *s; |
| 1490 | PyObject *res; |
Martin v. Löwis | bd928fe | 2011-10-14 10:20:37 +0200 | [diff] [blame] | 1491 | _Py_IDENTIFIER(write); |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 1492 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1493 | if (!PyArg_ParseTuple(args, "OO|i:dump", &x, &f, &version)) |
| 1494 | return NULL; |
| 1495 | s = PyMarshal_WriteObjectToString(x, version); |
| 1496 | if (s == NULL) |
| 1497 | return NULL; |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 1498 | res = _PyObject_CallMethodId(f, &PyId_write, "O", s); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1499 | Py_DECREF(s); |
| 1500 | return res; |
Guido van Rossum | dce2e3d | 1991-06-04 19:42:30 +0000 | [diff] [blame] | 1501 | } |
| 1502 | |
R. David Murray | dd226ea | 2009-05-13 12:27:21 +0000 | [diff] [blame] | 1503 | PyDoc_STRVAR(dump_doc, |
| 1504 | "dump(value, file[, version])\n\ |
| 1505 | \n\ |
| 1506 | Write the value on the open file. The value must be a supported type.\n\ |
| 1507 | The file must be an open file object such as sys.stdout or returned by\n\ |
| 1508 | open() or os.popen(). It must be opened in binary mode ('wb' or 'w+b').\n\ |
| 1509 | \n\ |
| 1510 | If the value has (or contains an object that has) an unsupported type, a\n\ |
| 1511 | ValueError exception is raised — but garbage data will also be written\n\ |
| 1512 | to the file. The object will not be properly read back by load()\n\ |
| 1513 | \n\ |
| 1514 | The version argument indicates the data format that dump should use."); |
| 1515 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1516 | static PyObject * |
Thomas Wouters | 4d70c3d | 2006-06-08 14:42:34 +0000 | [diff] [blame] | 1517 | marshal_load(PyObject *self, PyObject *f) |
Guido van Rossum | dce2e3d | 1991-06-04 19:42:30 +0000 | [diff] [blame] | 1518 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1519 | PyObject *data, *result; |
Martin v. Löwis | bd928fe | 2011-10-14 10:20:37 +0200 | [diff] [blame] | 1520 | _Py_IDENTIFIER(read); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1521 | RFILE rf; |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 1522 | |
| 1523 | /* |
| 1524 | * Make a call to the read method, but read zero bytes. |
| 1525 | * This is to ensure that the object passed in at least |
| 1526 | * has a read method which returns bytes. |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 1527 | * This can be removed if we guarantee good error handling |
| 1528 | * for r_string() |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 1529 | */ |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 1530 | data = _PyObject_CallMethodId(f, &PyId_read, "i", 0); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1531 | if (data == NULL) |
| 1532 | return NULL; |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 1533 | if (!PyBytes_Check(data)) { |
| 1534 | PyErr_Format(PyExc_TypeError, |
| 1535 | "f.read() returned not bytes but %.100s", |
| 1536 | data->ob_type->tp_name); |
| 1537 | result = NULL; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1538 | } |
| 1539 | else { |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 1540 | rf.depth = 0; |
| 1541 | rf.fp = NULL; |
| 1542 | rf.readable = f; |
Vinay Sajip | aac0f75 | 2011-07-02 18:42:21 +0100 | [diff] [blame] | 1543 | rf.current_filename = NULL; |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 1544 | if ((rf.refs = PyList_New(0)) != NULL) { |
| 1545 | result = read_object(&rf); |
| 1546 | Py_DECREF(rf.refs); |
| 1547 | } else |
| 1548 | result = NULL; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1549 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1550 | Py_DECREF(data); |
| 1551 | return result; |
Guido van Rossum | 0b0db8e | 1993-01-21 16:07:51 +0000 | [diff] [blame] | 1552 | } |
| 1553 | |
R. David Murray | dd226ea | 2009-05-13 12:27:21 +0000 | [diff] [blame] | 1554 | PyDoc_STRVAR(load_doc, |
| 1555 | "load(file)\n\ |
| 1556 | \n\ |
| 1557 | Read one value from the open file and return it. If no valid value is\n\ |
| 1558 | read (e.g. because the data has a different Python version’s\n\ |
| 1559 | incompatible marshal format), raise EOFError, ValueError or TypeError.\n\ |
| 1560 | The file must be an open file object opened in binary mode ('rb' or\n\ |
| 1561 | 'r+b').\n\ |
| 1562 | \n\ |
| 1563 | Note: If an object containing an unsupported type was marshalled with\n\ |
| 1564 | dump(), load() will substitute None for the unmarshallable type."); |
| 1565 | |
| 1566 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1567 | static PyObject * |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 1568 | marshal_dumps(PyObject *self, PyObject *args) |
Guido van Rossum | 0b0db8e | 1993-01-21 16:07:51 +0000 | [diff] [blame] | 1569 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1570 | PyObject *x; |
| 1571 | int version = Py_MARSHAL_VERSION; |
| 1572 | if (!PyArg_ParseTuple(args, "O|i:dumps", &x, &version)) |
| 1573 | return NULL; |
| 1574 | return PyMarshal_WriteObjectToString(x, version); |
Guido van Rossum | 0b0db8e | 1993-01-21 16:07:51 +0000 | [diff] [blame] | 1575 | } |
| 1576 | |
R. David Murray | dd226ea | 2009-05-13 12:27:21 +0000 | [diff] [blame] | 1577 | PyDoc_STRVAR(dumps_doc, |
| 1578 | "dumps(value[, version])\n\ |
| 1579 | \n\ |
| 1580 | Return the string that would be written to a file by dump(value, file).\n\ |
| 1581 | The value must be a supported type. Raise a ValueError exception if\n\ |
| 1582 | value has (or contains an object that has) an unsupported type.\n\ |
| 1583 | \n\ |
| 1584 | The version argument indicates the data format that dumps should use."); |
| 1585 | |
| 1586 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1587 | static PyObject * |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 1588 | marshal_loads(PyObject *self, PyObject *args) |
Guido van Rossum | 0b0db8e | 1993-01-21 16:07:51 +0000 | [diff] [blame] | 1589 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1590 | RFILE rf; |
| 1591 | Py_buffer p; |
| 1592 | char *s; |
| 1593 | Py_ssize_t n; |
| 1594 | PyObject* result; |
Antoine Pitrou | 4a90ef0 | 2012-03-03 02:35:32 +0100 | [diff] [blame] | 1595 | if (!PyArg_ParseTuple(args, "y*:loads", &p)) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1596 | return NULL; |
| 1597 | s = p.buf; |
| 1598 | n = p.len; |
| 1599 | rf.fp = NULL; |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 1600 | rf.readable = NULL; |
Benjamin Peterson | 43b0686 | 2011-05-27 09:08:01 -0500 | [diff] [blame] | 1601 | rf.current_filename = NULL; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1602 | rf.ptr = s; |
| 1603 | rf.end = s + n; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1604 | rf.depth = 0; |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 1605 | if ((rf.refs = PyList_New(0)) == NULL) |
| 1606 | return NULL; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1607 | result = read_object(&rf); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1608 | PyBuffer_Release(&p); |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 1609 | Py_DECREF(rf.refs); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1610 | return result; |
Guido van Rossum | dce2e3d | 1991-06-04 19:42:30 +0000 | [diff] [blame] | 1611 | } |
| 1612 | |
R. David Murray | dd226ea | 2009-05-13 12:27:21 +0000 | [diff] [blame] | 1613 | PyDoc_STRVAR(loads_doc, |
Antoine Pitrou | 4a90ef0 | 2012-03-03 02:35:32 +0100 | [diff] [blame] | 1614 | "loads(bytes)\n\ |
R. David Murray | dd226ea | 2009-05-13 12:27:21 +0000 | [diff] [blame] | 1615 | \n\ |
Antoine Pitrou | 4a90ef0 | 2012-03-03 02:35:32 +0100 | [diff] [blame] | 1616 | Convert the bytes object to a value. If no valid value is found, raise\n\ |
| 1617 | EOFError, ValueError or TypeError. Extra characters in the input are\n\ |
R. David Murray | dd226ea | 2009-05-13 12:27:21 +0000 | [diff] [blame] | 1618 | ignored."); |
| 1619 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1620 | static PyMethodDef marshal_methods[] = { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1621 | {"dump", marshal_dump, METH_VARARGS, dump_doc}, |
| 1622 | {"load", marshal_load, METH_O, load_doc}, |
| 1623 | {"dumps", marshal_dumps, METH_VARARGS, dumps_doc}, |
| 1624 | {"loads", marshal_loads, METH_VARARGS, loads_doc}, |
| 1625 | {NULL, NULL} /* sentinel */ |
Guido van Rossum | dce2e3d | 1991-06-04 19:42:30 +0000 | [diff] [blame] | 1626 | }; |
| 1627 | |
R. David Murray | dd226ea | 2009-05-13 12:27:21 +0000 | [diff] [blame] | 1628 | |
| 1629 | PyDoc_STRVAR(module_doc, |
| 1630 | "This module contains functions that can read and write Python values in\n\ |
| 1631 | a binary format. The format is specific to Python, but independent of\n\ |
| 1632 | machine architecture issues.\n\ |
| 1633 | \n\ |
| 1634 | Not all Python object types are supported; in general, only objects\n\ |
| 1635 | whose value is independent from a particular invocation of Python can be\n\ |
| 1636 | written and read by this module. The following types are supported:\n\ |
| 1637 | None, integers, floating point numbers, strings, bytes, bytearrays,\n\ |
| 1638 | tuples, lists, sets, dictionaries, and code objects, where it\n\ |
| 1639 | should be understood that tuples, lists and dictionaries are only\n\ |
| 1640 | supported as long as the values contained therein are themselves\n\ |
| 1641 | supported; and recursive lists and dictionaries should not be written\n\ |
| 1642 | (they will cause infinite loops).\n\ |
| 1643 | \n\ |
| 1644 | Variables:\n\ |
| 1645 | \n\ |
| 1646 | version -- indicates the format that the module uses. Version 0 is the\n\ |
| 1647 | historical format, version 1 shares interned strings and version 2\n\ |
| 1648 | uses a binary format for floating point numbers.\n\ |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame^] | 1649 | Version 3 shares common object references (New in version 3.4).\n\ |
R. David Murray | dd226ea | 2009-05-13 12:27:21 +0000 | [diff] [blame] | 1650 | \n\ |
| 1651 | Functions:\n\ |
| 1652 | \n\ |
| 1653 | dump() -- write value to a file\n\ |
| 1654 | load() -- read value from a file\n\ |
| 1655 | dumps() -- write value to a string\n\ |
| 1656 | loads() -- read value from a string"); |
| 1657 | |
| 1658 | |
| 1659 | |
Brett Cannon | 429ef65 | 2008-06-27 00:35:35 +0000 | [diff] [blame] | 1660 | static struct PyModuleDef marshalmodule = { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1661 | PyModuleDef_HEAD_INIT, |
| 1662 | "marshal", |
| 1663 | module_doc, |
| 1664 | 0, |
| 1665 | marshal_methods, |
| 1666 | NULL, |
| 1667 | NULL, |
| 1668 | NULL, |
| 1669 | NULL |
Martin v. Löwis | 1a21451 | 2008-06-11 05:26:20 +0000 | [diff] [blame] | 1670 | }; |
| 1671 | |
Jason Tishler | 6bc06ec | 2003-09-04 11:59:50 +0000 | [diff] [blame] | 1672 | PyMODINIT_FUNC |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 1673 | PyMarshal_Init(void) |
Guido van Rossum | dce2e3d | 1991-06-04 19:42:30 +0000 | [diff] [blame] | 1674 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1675 | PyObject *mod = PyModule_Create(&marshalmodule); |
| 1676 | if (mod == NULL) |
| 1677 | return NULL; |
| 1678 | PyModule_AddIntConstant(mod, "version", Py_MARSHAL_VERSION); |
| 1679 | return mod; |
Guido van Rossum | dce2e3d | 1991-06-04 19:42:30 +0000 | [diff] [blame] | 1680 | } |