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" |
Serhiy Storchaka | ce921c62 | 2015-02-11 15:53:31 +0200 | [diff] [blame] | 15 | #include "../Modules/hashtable.h" |
Guido van Rossum | dce2e3d | 1991-06-04 19:42:30 +0000 | [diff] [blame] | 16 | |
Fred Drake | 6da0b91 | 2000-06-28 18:47:56 +0000 | [diff] [blame] | 17 | /* High water mark to determine when the marshalled object is dangerously deep |
| 18 | * and risks coring the interpreter. When the object stack gets this deep, |
| 19 | * raise an exception instead of continuing. |
Guido van Rossum | 63175a1 | 2007-08-29 20:39:13 +0000 | [diff] [blame] | 20 | * On Windows debug builds, reduce this value. |
Fred Drake | 6da0b91 | 2000-06-28 18:47:56 +0000 | [diff] [blame] | 21 | */ |
Guido van Rossum | 63175a1 | 2007-08-29 20:39:13 +0000 | [diff] [blame] | 22 | #if defined(MS_WINDOWS) && defined(_DEBUG) |
Steve Dower | f6c69e6 | 2014-11-01 15:15:16 -0700 | [diff] [blame] | 23 | #define MAX_MARSHAL_STACK_DEPTH 1000 |
Guido van Rossum | 63175a1 | 2007-08-29 20:39:13 +0000 | [diff] [blame] | 24 | #else |
Guido van Rossum | d59da4b | 2007-05-22 18:11:13 +0000 | [diff] [blame] | 25 | #define MAX_MARSHAL_STACK_DEPTH 2000 |
Guido van Rossum | 63175a1 | 2007-08-29 20:39:13 +0000 | [diff] [blame] | 26 | #endif |
Fred Drake | 6da0b91 | 2000-06-28 18:47:56 +0000 | [diff] [blame] | 27 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 28 | #define TYPE_NULL '0' |
| 29 | #define TYPE_NONE 'N' |
| 30 | #define TYPE_FALSE 'F' |
| 31 | #define TYPE_TRUE 'T' |
| 32 | #define TYPE_STOPITER 'S' |
| 33 | #define TYPE_ELLIPSIS '.' |
| 34 | #define TYPE_INT 'i' |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 35 | #define TYPE_FLOAT 'f' |
| 36 | #define TYPE_BINARY_FLOAT 'g' |
| 37 | #define TYPE_COMPLEX 'x' |
| 38 | #define TYPE_BINARY_COMPLEX 'y' |
| 39 | #define TYPE_LONG 'l' |
| 40 | #define TYPE_STRING 's' |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 41 | #define TYPE_INTERNED 't' |
| 42 | #define TYPE_REF 'r' |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 43 | #define TYPE_TUPLE '(' |
| 44 | #define TYPE_LIST '[' |
| 45 | #define TYPE_DICT '{' |
| 46 | #define TYPE_CODE 'c' |
| 47 | #define TYPE_UNICODE 'u' |
| 48 | #define TYPE_UNKNOWN '?' |
| 49 | #define TYPE_SET '<' |
| 50 | #define TYPE_FROZENSET '>' |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 51 | #define FLAG_REF '\x80' /* with a type, add obj to index */ |
Guido van Rossum | dce2e3d | 1991-06-04 19:42:30 +0000 | [diff] [blame] | 52 | |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 53 | #define TYPE_ASCII 'a' |
| 54 | #define TYPE_ASCII_INTERNED 'A' |
| 55 | #define TYPE_SMALL_TUPLE ')' |
| 56 | #define TYPE_SHORT_ASCII 'z' |
| 57 | #define TYPE_SHORT_ASCII_INTERNED 'Z' |
| 58 | |
Eric Smith | b1a03cf | 2009-04-21 11:57:38 +0000 | [diff] [blame] | 59 | #define WFERR_OK 0 |
| 60 | #define WFERR_UNMARSHALLABLE 1 |
| 61 | #define WFERR_NESTEDTOODEEP 2 |
| 62 | #define WFERR_NOMEMORY 3 |
| 63 | |
Guido van Rossum | 0b0db8e | 1993-01-21 16:07:51 +0000 | [diff] [blame] | 64 | typedef struct { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 65 | FILE *fp; |
| 66 | int error; /* see WFERR_* values */ |
| 67 | int depth; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 68 | PyObject *str; |
| 69 | char *ptr; |
| 70 | char *end; |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 71 | char *buf; |
Serhiy Storchaka | ce921c62 | 2015-02-11 15:53:31 +0200 | [diff] [blame] | 72 | _Py_hashtable_t *hashtable; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 73 | int version; |
Guido van Rossum | 0b0db8e | 1993-01-21 16:07:51 +0000 | [diff] [blame] | 74 | } WFILE; |
Guido van Rossum | dce2e3d | 1991-06-04 19:42:30 +0000 | [diff] [blame] | 75 | |
Serhiy Storchaka | c1efe5f | 2015-02-11 15:54:54 +0200 | [diff] [blame] | 76 | #define w_byte(c, p) do { \ |
| 77 | if ((p)->ptr != (p)->end || w_reserve((p), 1)) \ |
| 78 | *(p)->ptr++ = (c); \ |
| 79 | } while(0) |
Guido van Rossum | 0b0db8e | 1993-01-21 16:07:51 +0000 | [diff] [blame] | 80 | |
| 81 | static void |
Serhiy Storchaka | c1efe5f | 2015-02-11 15:54:54 +0200 | [diff] [blame] | 82 | w_flush(WFILE *p) |
Guido van Rossum | 0b0db8e | 1993-01-21 16:07:51 +0000 | [diff] [blame] | 83 | { |
Serhiy Storchaka | c1efe5f | 2015-02-11 15:54:54 +0200 | [diff] [blame] | 84 | assert(p->fp != NULL); |
| 85 | fwrite(p->buf, 1, p->ptr - p->buf, p->fp); |
| 86 | p->ptr = p->buf; |
| 87 | } |
| 88 | |
| 89 | static int |
| 90 | w_reserve(WFILE *p, Py_ssize_t needed) |
| 91 | { |
| 92 | Py_ssize_t pos, size, delta; |
| 93 | if (p->ptr == NULL) |
| 94 | return 0; /* An error already occurred */ |
| 95 | if (p->fp != NULL) { |
| 96 | w_flush(p); |
| 97 | return needed <= p->end - p->ptr; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 98 | } |
Serhiy Storchaka | c1efe5f | 2015-02-11 15:54:54 +0200 | [diff] [blame] | 99 | assert(p->str != NULL); |
| 100 | pos = p->ptr - p->buf; |
| 101 | size = PyBytes_Size(p->str); |
| 102 | if (size > 16*1024*1024) |
| 103 | delta = (size >> 3); /* 12.5% overallocation */ |
| 104 | else |
| 105 | delta = size + 1024; |
| 106 | delta = Py_MAX(delta, needed); |
| 107 | if (delta > PY_SSIZE_T_MAX - size) { |
| 108 | p->error = WFERR_NOMEMORY; |
| 109 | return 0; |
| 110 | } |
| 111 | size += delta; |
| 112 | if (_PyBytes_Resize(&p->str, size) != 0) { |
| 113 | p->ptr = p->buf = p->end = NULL; |
| 114 | return 0; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 115 | } |
| 116 | else { |
Serhiy Storchaka | c1efe5f | 2015-02-11 15:54:54 +0200 | [diff] [blame] | 117 | p->buf = PyBytes_AS_STRING(p->str); |
| 118 | p->ptr = p->buf + pos; |
| 119 | p->end = p->buf + size; |
| 120 | return 1; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 121 | } |
Guido van Rossum | 0b0db8e | 1993-01-21 16:07:51 +0000 | [diff] [blame] | 122 | } |
| 123 | |
| 124 | static void |
Serhiy Storchaka | dfde215 | 2013-07-11 19:14:26 +0300 | [diff] [blame] | 125 | w_string(const char *s, Py_ssize_t n, WFILE *p) |
Guido van Rossum | 0b0db8e | 1993-01-21 16:07:51 +0000 | [diff] [blame] | 126 | { |
Serhiy Storchaka | c1efe5f | 2015-02-11 15:54:54 +0200 | [diff] [blame] | 127 | Py_ssize_t m; |
| 128 | if (!n || p->ptr == NULL) |
| 129 | return; |
| 130 | m = p->end - p->ptr; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 131 | if (p->fp != NULL) { |
Serhiy Storchaka | c1efe5f | 2015-02-11 15:54:54 +0200 | [diff] [blame] | 132 | if (n <= m) { |
Christian Heimes | f051e43 | 2016-09-13 20:22:02 +0200 | [diff] [blame^] | 133 | memcpy(p->ptr, s, n); |
Serhiy Storchaka | c1efe5f | 2015-02-11 15:54:54 +0200 | [diff] [blame] | 134 | p->ptr += n; |
| 135 | } |
| 136 | else { |
| 137 | w_flush(p); |
| 138 | fwrite(s, 1, n, p->fp); |
| 139 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 140 | } |
| 141 | else { |
Serhiy Storchaka | c1efe5f | 2015-02-11 15:54:54 +0200 | [diff] [blame] | 142 | if (n <= m || w_reserve(p, n - m)) { |
Christian Heimes | f051e43 | 2016-09-13 20:22:02 +0200 | [diff] [blame^] | 143 | memcpy(p->ptr, s, n); |
Serhiy Storchaka | c1efe5f | 2015-02-11 15:54:54 +0200 | [diff] [blame] | 144 | p->ptr += n; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 145 | } |
| 146 | } |
Guido van Rossum | 0b0db8e | 1993-01-21 16:07:51 +0000 | [diff] [blame] | 147 | } |
| 148 | |
| 149 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 150 | w_short(int x, WFILE *p) |
Guido van Rossum | dce2e3d | 1991-06-04 19:42:30 +0000 | [diff] [blame] | 151 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 152 | w_byte((char)( x & 0xff), p); |
| 153 | w_byte((char)((x>> 8) & 0xff), p); |
Guido van Rossum | dce2e3d | 1991-06-04 19:42:30 +0000 | [diff] [blame] | 154 | } |
| 155 | |
Guido van Rossum | 0b0db8e | 1993-01-21 16:07:51 +0000 | [diff] [blame] | 156 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 157 | w_long(long x, WFILE *p) |
Guido van Rossum | dce2e3d | 1991-06-04 19:42:30 +0000 | [diff] [blame] | 158 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 159 | w_byte((char)( x & 0xff), p); |
| 160 | w_byte((char)((x>> 8) & 0xff), p); |
| 161 | w_byte((char)((x>>16) & 0xff), p); |
| 162 | w_byte((char)((x>>24) & 0xff), p); |
Guido van Rossum | dce2e3d | 1991-06-04 19:42:30 +0000 | [diff] [blame] | 163 | } |
| 164 | |
Serhiy Storchaka | 7e01911 | 2013-02-13 12:08:15 +0200 | [diff] [blame] | 165 | #define SIZE32_MAX 0x7FFFFFFF |
| 166 | |
| 167 | #if SIZEOF_SIZE_T > 4 |
| 168 | # define W_SIZE(n, p) do { \ |
| 169 | if ((n) > SIZE32_MAX) { \ |
| 170 | (p)->depth--; \ |
| 171 | (p)->error = WFERR_UNMARSHALLABLE; \ |
| 172 | return; \ |
| 173 | } \ |
| 174 | w_long((long)(n), p); \ |
| 175 | } while(0) |
| 176 | #else |
| 177 | # define W_SIZE w_long |
| 178 | #endif |
| 179 | |
Serhiy Storchaka | dfde215 | 2013-07-11 19:14:26 +0300 | [diff] [blame] | 180 | static void |
| 181 | w_pstring(const char *s, Py_ssize_t n, WFILE *p) |
| 182 | { |
| 183 | W_SIZE(n, p); |
| 184 | w_string(s, n, p); |
| 185 | } |
| 186 | |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 187 | static void |
| 188 | w_short_pstring(const char *s, Py_ssize_t n, WFILE *p) |
| 189 | { |
Antoine Pitrou | b30f271 | 2013-10-12 23:14:47 +0200 | [diff] [blame] | 190 | w_byte(Py_SAFE_DOWNCAST(n, Py_ssize_t, unsigned char), p); |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 191 | w_string(s, n, p); |
| 192 | } |
| 193 | |
Serhiy Storchaka | 9594942 | 2013-08-27 19:40:23 +0300 | [diff] [blame] | 194 | /* We assume that Python ints are stored internally in base some power of |
Mark Dickinson | bd79264 | 2009-03-18 20:06:12 +0000 | [diff] [blame] | 195 | 2**15; for the sake of portability we'll always read and write them in base |
| 196 | exactly 2**15. */ |
| 197 | |
| 198 | #define PyLong_MARSHAL_SHIFT 15 |
| 199 | #define PyLong_MARSHAL_BASE ((short)1 << PyLong_MARSHAL_SHIFT) |
| 200 | #define PyLong_MARSHAL_MASK (PyLong_MARSHAL_BASE - 1) |
| 201 | #if PyLong_SHIFT % PyLong_MARSHAL_SHIFT != 0 |
| 202 | #error "PyLong_SHIFT must be a multiple of PyLong_MARSHAL_SHIFT" |
| 203 | #endif |
| 204 | #define PyLong_MARSHAL_RATIO (PyLong_SHIFT / PyLong_MARSHAL_SHIFT) |
| 205 | |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 206 | #define W_TYPE(t, p) do { \ |
| 207 | w_byte((t) | flag, (p)); \ |
| 208 | } while(0) |
| 209 | |
Mark Dickinson | bd79264 | 2009-03-18 20:06:12 +0000 | [diff] [blame] | 210 | static void |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 211 | w_PyLong(const PyLongObject *ob, char flag, WFILE *p) |
Mark Dickinson | bd79264 | 2009-03-18 20:06:12 +0000 | [diff] [blame] | 212 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 213 | Py_ssize_t i, j, n, l; |
| 214 | digit d; |
Mark Dickinson | bd79264 | 2009-03-18 20:06:12 +0000 | [diff] [blame] | 215 | |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 216 | W_TYPE(TYPE_LONG, p); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 217 | if (Py_SIZE(ob) == 0) { |
| 218 | w_long((long)0, p); |
| 219 | return; |
| 220 | } |
Mark Dickinson | bd79264 | 2009-03-18 20:06:12 +0000 | [diff] [blame] | 221 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 222 | /* set l to number of base PyLong_MARSHAL_BASE digits */ |
Victor Stinner | 45e8e2f | 2014-05-14 17:24:35 +0200 | [diff] [blame] | 223 | n = Py_ABS(Py_SIZE(ob)); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 224 | l = (n-1) * PyLong_MARSHAL_RATIO; |
| 225 | d = ob->ob_digit[n-1]; |
| 226 | assert(d != 0); /* a PyLong is always normalized */ |
| 227 | do { |
| 228 | d >>= PyLong_MARSHAL_SHIFT; |
| 229 | l++; |
| 230 | } while (d != 0); |
Serhiy Storchaka | 7e01911 | 2013-02-13 12:08:15 +0200 | [diff] [blame] | 231 | if (l > SIZE32_MAX) { |
| 232 | p->depth--; |
| 233 | p->error = WFERR_UNMARSHALLABLE; |
| 234 | return; |
| 235 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 236 | w_long((long)(Py_SIZE(ob) > 0 ? l : -l), p); |
Mark Dickinson | bd79264 | 2009-03-18 20:06:12 +0000 | [diff] [blame] | 237 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 238 | for (i=0; i < n-1; i++) { |
| 239 | d = ob->ob_digit[i]; |
| 240 | for (j=0; j < PyLong_MARSHAL_RATIO; j++) { |
| 241 | w_short(d & PyLong_MARSHAL_MASK, p); |
| 242 | d >>= PyLong_MARSHAL_SHIFT; |
| 243 | } |
| 244 | assert (d == 0); |
| 245 | } |
| 246 | d = ob->ob_digit[n-1]; |
| 247 | do { |
| 248 | w_short(d & PyLong_MARSHAL_MASK, p); |
| 249 | d >>= PyLong_MARSHAL_SHIFT; |
| 250 | } while (d != 0); |
Mark Dickinson | bd79264 | 2009-03-18 20:06:12 +0000 | [diff] [blame] | 251 | } |
| 252 | |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 253 | static int |
| 254 | w_ref(PyObject *v, char *flag, WFILE *p) |
| 255 | { |
Serhiy Storchaka | ce921c62 | 2015-02-11 15:53:31 +0200 | [diff] [blame] | 256 | _Py_hashtable_entry_t *entry; |
| 257 | int w; |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 258 | |
Serhiy Storchaka | ce921c62 | 2015-02-11 15:53:31 +0200 | [diff] [blame] | 259 | if (p->version < 3 || p->hashtable == NULL) |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 260 | return 0; /* not writing object references */ |
| 261 | |
| 262 | /* if it has only one reference, it definitely isn't shared */ |
| 263 | if (Py_REFCNT(v) == 1) |
| 264 | return 0; |
| 265 | |
Victor Stinner | 285cf0a | 2016-03-21 22:00:58 +0100 | [diff] [blame] | 266 | entry = _Py_HASHTABLE_GET_ENTRY(p->hashtable, v); |
Serhiy Storchaka | ce921c62 | 2015-02-11 15:53:31 +0200 | [diff] [blame] | 267 | if (entry != NULL) { |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 268 | /* write the reference index to the stream */ |
Victor Stinner | e8c6b2f | 2016-03-23 09:25:01 +0100 | [diff] [blame] | 269 | _Py_HASHTABLE_ENTRY_READ_DATA(p->hashtable, entry, w); |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 270 | /* we don't store "long" indices in the dict */ |
| 271 | assert(0 <= w && w <= 0x7fffffff); |
| 272 | w_byte(TYPE_REF, p); |
| 273 | w_long(w, p); |
| 274 | return 1; |
| 275 | } else { |
Serhiy Storchaka | ce921c62 | 2015-02-11 15:53:31 +0200 | [diff] [blame] | 276 | size_t s = p->hashtable->entries; |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 277 | /* we don't support long indices */ |
| 278 | if (s >= 0x7fffffff) { |
| 279 | PyErr_SetString(PyExc_ValueError, "too many objects"); |
| 280 | goto err; |
| 281 | } |
Serhiy Storchaka | 26861b0 | 2015-02-16 20:52:17 +0200 | [diff] [blame] | 282 | w = (int)s; |
Serhiy Storchaka | ce921c62 | 2015-02-11 15:53:31 +0200 | [diff] [blame] | 283 | Py_INCREF(v); |
| 284 | if (_Py_HASHTABLE_SET(p->hashtable, v, w) < 0) { |
| 285 | Py_DECREF(v); |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 286 | goto err; |
Serhiy Storchaka | ce921c62 | 2015-02-11 15:53:31 +0200 | [diff] [blame] | 287 | } |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 288 | *flag |= FLAG_REF; |
| 289 | return 0; |
| 290 | } |
| 291 | err: |
| 292 | p->error = WFERR_UNMARSHALLABLE; |
| 293 | return 1; |
| 294 | } |
| 295 | |
| 296 | static void |
| 297 | w_complex_object(PyObject *v, char flag, WFILE *p); |
| 298 | |
Guido van Rossum | b0c168c | 1996-12-05 23:15:02 +0000 | [diff] [blame] | 299 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 300 | w_object(PyObject *v, WFILE *p) |
Guido van Rossum | dce2e3d | 1991-06-04 19:42:30 +0000 | [diff] [blame] | 301 | { |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 302 | char flag = '\0'; |
Fred Drake | 6da0b91 | 2000-06-28 18:47:56 +0000 | [diff] [blame] | 303 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 304 | p->depth++; |
Tim Peters | d9b9ac8 | 2001-01-28 00:27:39 +0000 | [diff] [blame] | 305 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 306 | if (p->depth > MAX_MARSHAL_STACK_DEPTH) { |
| 307 | p->error = WFERR_NESTEDTOODEEP; |
| 308 | } |
| 309 | else if (v == NULL) { |
| 310 | w_byte(TYPE_NULL, p); |
| 311 | } |
| 312 | else if (v == Py_None) { |
| 313 | w_byte(TYPE_NONE, p); |
| 314 | } |
| 315 | else if (v == PyExc_StopIteration) { |
| 316 | w_byte(TYPE_STOPITER, p); |
| 317 | } |
| 318 | else if (v == Py_Ellipsis) { |
| 319 | w_byte(TYPE_ELLIPSIS, p); |
| 320 | } |
| 321 | else if (v == Py_False) { |
| 322 | w_byte(TYPE_FALSE, p); |
| 323 | } |
| 324 | else if (v == Py_True) { |
| 325 | w_byte(TYPE_TRUE, p); |
| 326 | } |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 327 | else if (!w_ref(v, &flag, p)) |
| 328 | w_complex_object(v, flag, p); |
| 329 | |
| 330 | p->depth--; |
| 331 | } |
| 332 | |
| 333 | static void |
| 334 | w_complex_object(PyObject *v, char flag, WFILE *p) |
| 335 | { |
| 336 | Py_ssize_t i, n; |
| 337 | |
| 338 | if (PyLong_CheckExact(v)) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 339 | long x = PyLong_AsLong(v); |
| 340 | if ((x == -1) && PyErr_Occurred()) { |
| 341 | PyLongObject *ob = (PyLongObject *)v; |
| 342 | PyErr_Clear(); |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 343 | w_PyLong(ob, flag, p); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 344 | } |
| 345 | else { |
Guido van Rossum | c1547d9 | 1996-12-10 15:39:04 +0000 | [diff] [blame] | 346 | #if SIZEOF_LONG > 4 |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 347 | long y = Py_ARITHMETIC_RIGHT_SHIFT(long, x, 31); |
| 348 | if (y && y != -1) { |
Martin v. Löwis | 7e39572 | 2012-07-28 19:44:05 +0200 | [diff] [blame] | 349 | /* Too large for TYPE_INT */ |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 350 | w_PyLong((PyLongObject*)v, flag, p); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 351 | } |
| 352 | else |
Guido van Rossum | c1547d9 | 1996-12-10 15:39:04 +0000 | [diff] [blame] | 353 | #endif |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 354 | { |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 355 | W_TYPE(TYPE_INT, p); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 356 | w_long(x, p); |
| 357 | } |
| 358 | } |
| 359 | } |
| 360 | else if (PyFloat_CheckExact(v)) { |
| 361 | if (p->version > 1) { |
| 362 | unsigned char buf[8]; |
| 363 | if (_PyFloat_Pack8(PyFloat_AsDouble(v), |
| 364 | buf, 1) < 0) { |
| 365 | p->error = WFERR_UNMARSHALLABLE; |
| 366 | return; |
| 367 | } |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 368 | W_TYPE(TYPE_BINARY_FLOAT, p); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 369 | w_string((char*)buf, 8, p); |
| 370 | } |
| 371 | else { |
| 372 | char *buf = PyOS_double_to_string(PyFloat_AS_DOUBLE(v), |
| 373 | 'g', 17, 0, NULL); |
| 374 | if (!buf) { |
| 375 | p->error = WFERR_NOMEMORY; |
| 376 | return; |
| 377 | } |
| 378 | n = strlen(buf); |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 379 | W_TYPE(TYPE_FLOAT, p); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 380 | w_byte((int)n, p); |
Serhiy Storchaka | 7e01911 | 2013-02-13 12:08:15 +0200 | [diff] [blame] | 381 | w_string(buf, n, p); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 382 | PyMem_Free(buf); |
| 383 | } |
| 384 | } |
| 385 | else if (PyComplex_CheckExact(v)) { |
| 386 | if (p->version > 1) { |
| 387 | unsigned char buf[8]; |
| 388 | if (_PyFloat_Pack8(PyComplex_RealAsDouble(v), |
| 389 | buf, 1) < 0) { |
| 390 | p->error = WFERR_UNMARSHALLABLE; |
| 391 | return; |
| 392 | } |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 393 | W_TYPE(TYPE_BINARY_COMPLEX, p); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 394 | w_string((char*)buf, 8, p); |
| 395 | if (_PyFloat_Pack8(PyComplex_ImagAsDouble(v), |
| 396 | buf, 1) < 0) { |
| 397 | p->error = WFERR_UNMARSHALLABLE; |
| 398 | return; |
| 399 | } |
| 400 | w_string((char*)buf, 8, p); |
| 401 | } |
| 402 | else { |
| 403 | char *buf; |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 404 | W_TYPE(TYPE_COMPLEX, p); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 405 | buf = PyOS_double_to_string(PyComplex_RealAsDouble(v), |
| 406 | 'g', 17, 0, NULL); |
| 407 | if (!buf) { |
| 408 | p->error = WFERR_NOMEMORY; |
| 409 | return; |
| 410 | } |
| 411 | n = strlen(buf); |
| 412 | w_byte((int)n, p); |
Serhiy Storchaka | 7e01911 | 2013-02-13 12:08:15 +0200 | [diff] [blame] | 413 | w_string(buf, n, p); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 414 | PyMem_Free(buf); |
| 415 | buf = PyOS_double_to_string(PyComplex_ImagAsDouble(v), |
| 416 | 'g', 17, 0, NULL); |
| 417 | if (!buf) { |
| 418 | p->error = WFERR_NOMEMORY; |
| 419 | return; |
| 420 | } |
| 421 | n = strlen(buf); |
| 422 | w_byte((int)n, p); |
Serhiy Storchaka | 7e01911 | 2013-02-13 12:08:15 +0200 | [diff] [blame] | 423 | w_string(buf, n, p); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 424 | PyMem_Free(buf); |
| 425 | } |
| 426 | } |
| 427 | else if (PyBytes_CheckExact(v)) { |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 428 | W_TYPE(TYPE_STRING, p); |
Serhiy Storchaka | dfde215 | 2013-07-11 19:14:26 +0300 | [diff] [blame] | 429 | w_pstring(PyBytes_AS_STRING(v), PyBytes_GET_SIZE(v), p); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 430 | } |
| 431 | else if (PyUnicode_CheckExact(v)) { |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 432 | if (p->version >= 4 && PyUnicode_IS_ASCII(v)) { |
| 433 | int is_short = PyUnicode_GET_LENGTH(v) < 256; |
| 434 | if (is_short) { |
| 435 | if (PyUnicode_CHECK_INTERNED(v)) |
| 436 | W_TYPE(TYPE_SHORT_ASCII_INTERNED, p); |
| 437 | else |
| 438 | W_TYPE(TYPE_SHORT_ASCII, p); |
| 439 | w_short_pstring((char *) PyUnicode_1BYTE_DATA(v), |
| 440 | PyUnicode_GET_LENGTH(v), p); |
| 441 | } |
| 442 | else { |
| 443 | if (PyUnicode_CHECK_INTERNED(v)) |
| 444 | W_TYPE(TYPE_ASCII_INTERNED, p); |
| 445 | else |
| 446 | W_TYPE(TYPE_ASCII, p); |
| 447 | w_pstring((char *) PyUnicode_1BYTE_DATA(v), |
| 448 | PyUnicode_GET_LENGTH(v), p); |
| 449 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 450 | } |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 451 | else { |
| 452 | PyObject *utf8; |
| 453 | utf8 = PyUnicode_AsEncodedString(v, "utf8", "surrogatepass"); |
| 454 | if (utf8 == NULL) { |
| 455 | p->depth--; |
| 456 | p->error = WFERR_UNMARSHALLABLE; |
| 457 | return; |
| 458 | } |
| 459 | if (p->version >= 3 && PyUnicode_CHECK_INTERNED(v)) |
| 460 | W_TYPE(TYPE_INTERNED, p); |
| 461 | else |
| 462 | W_TYPE(TYPE_UNICODE, p); |
| 463 | w_pstring(PyBytes_AS_STRING(utf8), PyBytes_GET_SIZE(utf8), p); |
| 464 | Py_DECREF(utf8); |
| 465 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 466 | } |
| 467 | else if (PyTuple_CheckExact(v)) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 468 | n = PyTuple_Size(v); |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 469 | if (p->version >= 4 && n < 256) { |
| 470 | W_TYPE(TYPE_SMALL_TUPLE, p); |
Victor Stinner | da06255 | 2013-11-16 00:13:29 +0100 | [diff] [blame] | 471 | w_byte((unsigned char)n, p); |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 472 | } |
| 473 | else { |
| 474 | W_TYPE(TYPE_TUPLE, p); |
| 475 | W_SIZE(n, p); |
| 476 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 477 | for (i = 0; i < n; i++) { |
| 478 | w_object(PyTuple_GET_ITEM(v, i), p); |
| 479 | } |
| 480 | } |
| 481 | else if (PyList_CheckExact(v)) { |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 482 | W_TYPE(TYPE_LIST, p); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 483 | n = PyList_GET_SIZE(v); |
Serhiy Storchaka | 7e01911 | 2013-02-13 12:08:15 +0200 | [diff] [blame] | 484 | W_SIZE(n, p); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 485 | for (i = 0; i < n; i++) { |
| 486 | w_object(PyList_GET_ITEM(v, i), p); |
| 487 | } |
| 488 | } |
| 489 | else if (PyDict_CheckExact(v)) { |
| 490 | Py_ssize_t pos; |
| 491 | PyObject *key, *value; |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 492 | W_TYPE(TYPE_DICT, p); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 493 | /* This one is NULL object terminated! */ |
| 494 | pos = 0; |
| 495 | while (PyDict_Next(v, &pos, &key, &value)) { |
| 496 | w_object(key, p); |
| 497 | w_object(value, p); |
| 498 | } |
| 499 | w_object((PyObject *)NULL, p); |
| 500 | } |
| 501 | else if (PyAnySet_CheckExact(v)) { |
| 502 | PyObject *value, *it; |
Raymond Hettinger | a422c34 | 2005-01-11 03:03:27 +0000 | [diff] [blame] | 503 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 504 | if (PyObject_TypeCheck(v, &PySet_Type)) |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 505 | W_TYPE(TYPE_SET, p); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 506 | else |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 507 | W_TYPE(TYPE_FROZENSET, p); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 508 | n = PyObject_Size(v); |
| 509 | if (n == -1) { |
| 510 | p->depth--; |
| 511 | p->error = WFERR_UNMARSHALLABLE; |
| 512 | return; |
| 513 | } |
Serhiy Storchaka | 7e01911 | 2013-02-13 12:08:15 +0200 | [diff] [blame] | 514 | W_SIZE(n, p); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 515 | it = PyObject_GetIter(v); |
| 516 | if (it == NULL) { |
| 517 | p->depth--; |
| 518 | p->error = WFERR_UNMARSHALLABLE; |
| 519 | return; |
| 520 | } |
| 521 | while ((value = PyIter_Next(it)) != NULL) { |
| 522 | w_object(value, p); |
| 523 | Py_DECREF(value); |
| 524 | } |
| 525 | Py_DECREF(it); |
| 526 | if (PyErr_Occurred()) { |
| 527 | p->depth--; |
| 528 | p->error = WFERR_UNMARSHALLABLE; |
| 529 | return; |
| 530 | } |
| 531 | } |
| 532 | else if (PyCode_Check(v)) { |
| 533 | PyCodeObject *co = (PyCodeObject *)v; |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 534 | W_TYPE(TYPE_CODE, p); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 535 | w_long(co->co_argcount, p); |
| 536 | w_long(co->co_kwonlyargcount, p); |
| 537 | w_long(co->co_nlocals, p); |
| 538 | w_long(co->co_stacksize, p); |
| 539 | w_long(co->co_flags, p); |
| 540 | w_object(co->co_code, p); |
| 541 | w_object(co->co_consts, p); |
| 542 | w_object(co->co_names, p); |
| 543 | w_object(co->co_varnames, p); |
| 544 | w_object(co->co_freevars, p); |
| 545 | w_object(co->co_cellvars, p); |
| 546 | w_object(co->co_filename, p); |
| 547 | w_object(co->co_name, p); |
| 548 | w_long(co->co_firstlineno, p); |
| 549 | w_object(co->co_lnotab, p); |
| 550 | } |
| 551 | else if (PyObject_CheckBuffer(v)) { |
Serhiy Storchaka | b757c83 | 2014-12-05 22:25:22 +0200 | [diff] [blame] | 552 | /* Write unknown bytes-like objects as a byte string */ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 553 | Py_buffer view; |
Antoine Pitrou | 679e9d3 | 2012-03-02 18:12:43 +0100 | [diff] [blame] | 554 | if (PyObject_GetBuffer(v, &view, PyBUF_SIMPLE) != 0) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 555 | w_byte(TYPE_UNKNOWN, p); |
Antoine Pitrou | 679e9d3 | 2012-03-02 18:12:43 +0100 | [diff] [blame] | 556 | p->depth--; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 557 | p->error = WFERR_UNMARSHALLABLE; |
Antoine Pitrou | 679e9d3 | 2012-03-02 18:12:43 +0100 | [diff] [blame] | 558 | return; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 559 | } |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 560 | W_TYPE(TYPE_STRING, p); |
Serhiy Storchaka | dfde215 | 2013-07-11 19:14:26 +0300 | [diff] [blame] | 561 | w_pstring(view.buf, view.len, p); |
Antoine Pitrou | 679e9d3 | 2012-03-02 18:12:43 +0100 | [diff] [blame] | 562 | PyBuffer_Release(&view); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 563 | } |
| 564 | else { |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 565 | W_TYPE(TYPE_UNKNOWN, p); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 566 | p->error = WFERR_UNMARSHALLABLE; |
| 567 | } |
Guido van Rossum | dce2e3d | 1991-06-04 19:42:30 +0000 | [diff] [blame] | 568 | } |
| 569 | |
Serhiy Storchaka | ce921c62 | 2015-02-11 15:53:31 +0200 | [diff] [blame] | 570 | static int |
| 571 | w_init_refs(WFILE *wf, int version) |
| 572 | { |
| 573 | if (version >= 3) { |
Victor Stinner | 285cf0a | 2016-03-21 22:00:58 +0100 | [diff] [blame] | 574 | wf->hashtable = _Py_hashtable_new(sizeof(PyObject *), sizeof(int), |
| 575 | _Py_hashtable_hash_ptr, |
Serhiy Storchaka | ce921c62 | 2015-02-11 15:53:31 +0200 | [diff] [blame] | 576 | _Py_hashtable_compare_direct); |
| 577 | if (wf->hashtable == NULL) { |
| 578 | PyErr_NoMemory(); |
| 579 | return -1; |
| 580 | } |
| 581 | } |
| 582 | return 0; |
| 583 | } |
| 584 | |
| 585 | static int |
Victor Stinner | 285cf0a | 2016-03-21 22:00:58 +0100 | [diff] [blame] | 586 | w_decref_entry(_Py_hashtable_t *ht, _Py_hashtable_entry_t *entry, |
| 587 | void *Py_UNUSED(data)) |
Serhiy Storchaka | ce921c62 | 2015-02-11 15:53:31 +0200 | [diff] [blame] | 588 | { |
Victor Stinner | 285cf0a | 2016-03-21 22:00:58 +0100 | [diff] [blame] | 589 | PyObject *entry_key; |
| 590 | |
Victor Stinner | 5dacbd4 | 2016-03-23 09:52:13 +0100 | [diff] [blame] | 591 | _Py_HASHTABLE_ENTRY_READ_KEY(ht, entry, entry_key); |
Victor Stinner | 285cf0a | 2016-03-21 22:00:58 +0100 | [diff] [blame] | 592 | Py_XDECREF(entry_key); |
Serhiy Storchaka | ce921c62 | 2015-02-11 15:53:31 +0200 | [diff] [blame] | 593 | return 0; |
| 594 | } |
| 595 | |
| 596 | static void |
| 597 | w_clear_refs(WFILE *wf) |
| 598 | { |
| 599 | if (wf->hashtable != NULL) { |
| 600 | _Py_hashtable_foreach(wf->hashtable, w_decref_entry, NULL); |
| 601 | _Py_hashtable_destroy(wf->hashtable); |
| 602 | } |
| 603 | } |
| 604 | |
Serhiy Storchaka | 9594942 | 2013-08-27 19:40:23 +0300 | [diff] [blame] | 605 | /* version currently has no effect for writing ints. */ |
Guido van Rossum | 0b0db8e | 1993-01-21 16:07:51 +0000 | [diff] [blame] | 606 | void |
Martin v. Löwis | ef82d2f | 2004-06-27 16:51:46 +0000 | [diff] [blame] | 607 | PyMarshal_WriteLongToFile(long x, FILE *fp, int version) |
Guido van Rossum | dce2e3d | 1991-06-04 19:42:30 +0000 | [diff] [blame] | 608 | { |
Serhiy Storchaka | c1efe5f | 2015-02-11 15:54:54 +0200 | [diff] [blame] | 609 | char buf[4]; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 610 | WFILE wf; |
Serhiy Storchaka | ce921c62 | 2015-02-11 15:53:31 +0200 | [diff] [blame] | 611 | memset(&wf, 0, sizeof(wf)); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 612 | wf.fp = fp; |
Serhiy Storchaka | c1efe5f | 2015-02-11 15:54:54 +0200 | [diff] [blame] | 613 | wf.ptr = wf.buf = buf; |
| 614 | wf.end = wf.ptr + sizeof(buf); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 615 | wf.error = WFERR_OK; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 616 | wf.version = version; |
| 617 | w_long(x, &wf); |
Serhiy Storchaka | c1efe5f | 2015-02-11 15:54:54 +0200 | [diff] [blame] | 618 | w_flush(&wf); |
Guido van Rossum | 0b0db8e | 1993-01-21 16:07:51 +0000 | [diff] [blame] | 619 | } |
| 620 | |
| 621 | void |
Martin v. Löwis | ef82d2f | 2004-06-27 16:51:46 +0000 | [diff] [blame] | 622 | PyMarshal_WriteObjectToFile(PyObject *x, FILE *fp, int version) |
Guido van Rossum | 0b0db8e | 1993-01-21 16:07:51 +0000 | [diff] [blame] | 623 | { |
Serhiy Storchaka | c1efe5f | 2015-02-11 15:54:54 +0200 | [diff] [blame] | 624 | char buf[BUFSIZ]; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 625 | WFILE wf; |
Serhiy Storchaka | ce921c62 | 2015-02-11 15:53:31 +0200 | [diff] [blame] | 626 | memset(&wf, 0, sizeof(wf)); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 627 | wf.fp = fp; |
Serhiy Storchaka | c1efe5f | 2015-02-11 15:54:54 +0200 | [diff] [blame] | 628 | wf.ptr = wf.buf = buf; |
| 629 | wf.end = wf.ptr + sizeof(buf); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 630 | wf.error = WFERR_OK; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 631 | wf.version = version; |
Serhiy Storchaka | ce921c62 | 2015-02-11 15:53:31 +0200 | [diff] [blame] | 632 | if (w_init_refs(&wf, version)) |
| 633 | return; /* caller mush check PyErr_Occurred() */ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 634 | w_object(x, &wf); |
Serhiy Storchaka | ce921c62 | 2015-02-11 15:53:31 +0200 | [diff] [blame] | 635 | w_clear_refs(&wf); |
Serhiy Storchaka | c1efe5f | 2015-02-11 15:54:54 +0200 | [diff] [blame] | 636 | w_flush(&wf); |
Guido van Rossum | 0b0db8e | 1993-01-21 16:07:51 +0000 | [diff] [blame] | 637 | } |
| 638 | |
Serhiy Storchaka | c07422c | 2015-02-11 16:18:09 +0200 | [diff] [blame] | 639 | typedef struct { |
| 640 | FILE *fp; |
| 641 | int depth; |
| 642 | PyObject *readable; /* Stream-like object being read from */ |
| 643 | PyObject *current_filename; |
| 644 | char *ptr; |
| 645 | char *end; |
| 646 | char *buf; |
| 647 | Py_ssize_t buf_size; |
| 648 | PyObject *refs; /* a list */ |
| 649 | } RFILE; |
Guido van Rossum | 0b0db8e | 1993-01-21 16:07:51 +0000 | [diff] [blame] | 650 | |
Serhiy Storchaka | ef1585e | 2015-12-25 20:01:53 +0200 | [diff] [blame] | 651 | static const char * |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 652 | r_string(Py_ssize_t n, RFILE *p) |
Guido van Rossum | 0b0db8e | 1993-01-21 16:07:51 +0000 | [diff] [blame] | 653 | { |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 654 | Py_ssize_t read = -1; |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 655 | |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 656 | if (p->ptr != NULL) { |
| 657 | /* Fast path for loads() */ |
| 658 | char *res = p->ptr; |
| 659 | Py_ssize_t left = p->end - p->ptr; |
| 660 | if (left < n) { |
| 661 | PyErr_SetString(PyExc_EOFError, |
| 662 | "marshal data too short"); |
| 663 | return NULL; |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 664 | } |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 665 | p->ptr += n; |
| 666 | return res; |
| 667 | } |
| 668 | if (p->buf == NULL) { |
| 669 | p->buf = PyMem_MALLOC(n); |
| 670 | if (p->buf == NULL) { |
| 671 | PyErr_NoMemory(); |
| 672 | return NULL; |
| 673 | } |
| 674 | p->buf_size = n; |
| 675 | } |
| 676 | else if (p->buf_size < n) { |
| 677 | p->buf = PyMem_REALLOC(p->buf, n); |
| 678 | if (p->buf == NULL) { |
| 679 | PyErr_NoMemory(); |
| 680 | return NULL; |
| 681 | } |
| 682 | p->buf_size = n; |
| 683 | } |
Victor Stinner | 763b0d1 | 2013-10-31 16:56:38 +0100 | [diff] [blame] | 684 | |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 685 | if (!p->readable) { |
| 686 | assert(p->fp != NULL); |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 687 | read = fread(p->buf, 1, n, p->fp); |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 688 | } |
| 689 | else { |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 690 | _Py_IDENTIFIER(readinto); |
| 691 | PyObject *res, *mview; |
| 692 | Py_buffer buf; |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 693 | |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 694 | if (PyBuffer_FillInfo(&buf, NULL, p->buf, n, 0, PyBUF_CONTIG) == -1) |
| 695 | return NULL; |
| 696 | mview = PyMemoryView_FromBuffer(&buf); |
| 697 | if (mview == NULL) |
| 698 | return NULL; |
| 699 | |
| 700 | res = _PyObject_CallMethodId(p->readable, &PyId_readinto, "N", mview); |
| 701 | if (res != NULL) { |
| 702 | read = PyNumber_AsSsize_t(res, PyExc_ValueError); |
| 703 | Py_DECREF(res); |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 704 | } |
| 705 | } |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 706 | if (read != n) { |
| 707 | if (!PyErr_Occurred()) { |
| 708 | if (read > n) |
| 709 | PyErr_Format(PyExc_ValueError, |
| 710 | "read() returned too much data: " |
| 711 | "%zd bytes requested, %zd returned", |
| 712 | n, read); |
| 713 | else |
| 714 | PyErr_SetString(PyExc_EOFError, |
| 715 | "EOF read where not expected"); |
| 716 | } |
| 717 | return NULL; |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 718 | } |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 719 | return p->buf; |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 720 | } |
| 721 | |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 722 | static int |
| 723 | r_byte(RFILE *p) |
| 724 | { |
| 725 | int c = EOF; |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 726 | |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 727 | if (p->ptr != NULL) { |
| 728 | if (p->ptr < p->end) |
| 729 | c = (unsigned char) *p->ptr++; |
| 730 | return c; |
| 731 | } |
| 732 | if (!p->readable) { |
| 733 | assert(p->fp); |
| 734 | c = getc(p->fp); |
| 735 | } |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 736 | else { |
Serhiy Storchaka | ef1585e | 2015-12-25 20:01:53 +0200 | [diff] [blame] | 737 | const char *ptr = r_string(1, p); |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 738 | if (ptr != NULL) |
| 739 | c = *(unsigned char *) ptr; |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 740 | } |
| 741 | return c; |
Guido van Rossum | 0b0db8e | 1993-01-21 16:07:51 +0000 | [diff] [blame] | 742 | } |
| 743 | |
| 744 | static int |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 745 | r_short(RFILE *p) |
Guido van Rossum | 0b0db8e | 1993-01-21 16:07:51 +0000 | [diff] [blame] | 746 | { |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 747 | short x = -1; |
Serhiy Storchaka | ef1585e | 2015-12-25 20:01:53 +0200 | [diff] [blame] | 748 | const unsigned char *buffer; |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 749 | |
Serhiy Storchaka | ef1585e | 2015-12-25 20:01:53 +0200 | [diff] [blame] | 750 | buffer = (const unsigned char *) r_string(2, p); |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 751 | if (buffer != NULL) { |
| 752 | x = buffer[0]; |
| 753 | x |= buffer[1] << 8; |
| 754 | /* Sign-extension, in case short greater than 16 bits */ |
| 755 | x |= -(x & 0x8000); |
| 756 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 757 | return x; |
Guido van Rossum | dce2e3d | 1991-06-04 19:42:30 +0000 | [diff] [blame] | 758 | } |
| 759 | |
Guido van Rossum | 0b0db8e | 1993-01-21 16:07:51 +0000 | [diff] [blame] | 760 | static long |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 761 | r_long(RFILE *p) |
Guido van Rossum | dce2e3d | 1991-06-04 19:42:30 +0000 | [diff] [blame] | 762 | { |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 763 | long x = -1; |
Serhiy Storchaka | ef1585e | 2015-12-25 20:01:53 +0200 | [diff] [blame] | 764 | const unsigned char *buffer; |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 765 | |
Serhiy Storchaka | ef1585e | 2015-12-25 20:01:53 +0200 | [diff] [blame] | 766 | buffer = (const unsigned char *) r_string(4, p); |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 767 | if (buffer != NULL) { |
| 768 | x = buffer[0]; |
| 769 | x |= (long)buffer[1] << 8; |
| 770 | x |= (long)buffer[2] << 16; |
| 771 | x |= (long)buffer[3] << 24; |
Guido van Rossum | c1547d9 | 1996-12-10 15:39:04 +0000 | [diff] [blame] | 772 | #if SIZEOF_LONG > 4 |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 773 | /* Sign extension for 64-bit machines */ |
| 774 | x |= -(x & 0x80000000L); |
Guido van Rossum | c1547d9 | 1996-12-10 15:39:04 +0000 | [diff] [blame] | 775 | #endif |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 776 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 777 | return x; |
Guido van Rossum | b0c168c | 1996-12-05 23:15:02 +0000 | [diff] [blame] | 778 | } |
| 779 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 780 | static PyObject * |
Mark Dickinson | bd79264 | 2009-03-18 20:06:12 +0000 | [diff] [blame] | 781 | r_PyLong(RFILE *p) |
| 782 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 783 | PyLongObject *ob; |
Serhiy Storchaka | 7e01911 | 2013-02-13 12:08:15 +0200 | [diff] [blame] | 784 | long n, size, i; |
| 785 | int j, md, shorts_in_top_digit; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 786 | digit d; |
Mark Dickinson | bd79264 | 2009-03-18 20:06:12 +0000 | [diff] [blame] | 787 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 788 | n = r_long(p); |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 789 | if (PyErr_Occurred()) |
| 790 | return NULL; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 791 | if (n == 0) |
| 792 | return (PyObject *)_PyLong_New(0); |
Serhiy Storchaka | 7e01911 | 2013-02-13 12:08:15 +0200 | [diff] [blame] | 793 | if (n < -SIZE32_MAX || n > SIZE32_MAX) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 794 | PyErr_SetString(PyExc_ValueError, |
| 795 | "bad marshal data (long size out of range)"); |
| 796 | return NULL; |
| 797 | } |
Mark Dickinson | bd79264 | 2009-03-18 20:06:12 +0000 | [diff] [blame] | 798 | |
Victor Stinner | 45e8e2f | 2014-05-14 17:24:35 +0200 | [diff] [blame] | 799 | size = 1 + (Py_ABS(n) - 1) / PyLong_MARSHAL_RATIO; |
| 800 | shorts_in_top_digit = 1 + (Py_ABS(n) - 1) % PyLong_MARSHAL_RATIO; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 801 | ob = _PyLong_New(size); |
| 802 | if (ob == NULL) |
| 803 | return NULL; |
Victor Stinner | 763b0d1 | 2013-10-31 16:56:38 +0100 | [diff] [blame] | 804 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 805 | Py_SIZE(ob) = n > 0 ? size : -size; |
Mark Dickinson | bd79264 | 2009-03-18 20:06:12 +0000 | [diff] [blame] | 806 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 807 | for (i = 0; i < size-1; i++) { |
| 808 | d = 0; |
| 809 | for (j=0; j < PyLong_MARSHAL_RATIO; j++) { |
| 810 | md = r_short(p); |
Victor Stinner | 763b0d1 | 2013-10-31 16:56:38 +0100 | [diff] [blame] | 811 | if (PyErr_Occurred()) { |
| 812 | Py_DECREF(ob); |
| 813 | return NULL; |
| 814 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 815 | if (md < 0 || md > PyLong_MARSHAL_BASE) |
| 816 | goto bad_digit; |
| 817 | d += (digit)md << j*PyLong_MARSHAL_SHIFT; |
| 818 | } |
| 819 | ob->ob_digit[i] = d; |
| 820 | } |
Victor Stinner | 763b0d1 | 2013-10-31 16:56:38 +0100 | [diff] [blame] | 821 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 822 | d = 0; |
| 823 | for (j=0; j < shorts_in_top_digit; j++) { |
| 824 | md = r_short(p); |
Victor Stinner | 763b0d1 | 2013-10-31 16:56:38 +0100 | [diff] [blame] | 825 | if (PyErr_Occurred()) { |
| 826 | Py_DECREF(ob); |
| 827 | return NULL; |
| 828 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 829 | if (md < 0 || md > PyLong_MARSHAL_BASE) |
| 830 | goto bad_digit; |
| 831 | /* topmost marshal digit should be nonzero */ |
| 832 | if (md == 0 && j == shorts_in_top_digit - 1) { |
| 833 | Py_DECREF(ob); |
| 834 | PyErr_SetString(PyExc_ValueError, |
| 835 | "bad marshal data (unnormalized long data)"); |
| 836 | return NULL; |
| 837 | } |
| 838 | d += (digit)md << j*PyLong_MARSHAL_SHIFT; |
| 839 | } |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 840 | if (PyErr_Occurred()) { |
| 841 | Py_DECREF(ob); |
| 842 | return NULL; |
| 843 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 844 | /* top digit should be nonzero, else the resulting PyLong won't be |
| 845 | normalized */ |
| 846 | ob->ob_digit[size-1] = d; |
| 847 | return (PyObject *)ob; |
Mark Dickinson | bd79264 | 2009-03-18 20:06:12 +0000 | [diff] [blame] | 848 | bad_digit: |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 849 | Py_DECREF(ob); |
| 850 | PyErr_SetString(PyExc_ValueError, |
| 851 | "bad marshal data (digit out of range in long)"); |
| 852 | return NULL; |
Mark Dickinson | bd79264 | 2009-03-18 20:06:12 +0000 | [diff] [blame] | 853 | } |
| 854 | |
Kristján Valur Jónsson | e178187 | 2013-03-20 11:43:57 -0700 | [diff] [blame] | 855 | /* allocate the reflist index for a new object. Return -1 on failure */ |
| 856 | static Py_ssize_t |
| 857 | r_ref_reserve(int flag, RFILE *p) |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 858 | { |
| 859 | if (flag) { /* currently only FLAG_REF is defined */ |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 860 | Py_ssize_t idx = PyList_GET_SIZE(p->refs); |
Kristján Valur Jónsson | e178187 | 2013-03-20 11:43:57 -0700 | [diff] [blame] | 861 | if (idx >= 0x7ffffffe) { |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 862 | PyErr_SetString(PyExc_ValueError, "bad marshal data (index list too large)"); |
Kristján Valur Jónsson | e178187 | 2013-03-20 11:43:57 -0700 | [diff] [blame] | 863 | return -1; |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 864 | } |
| 865 | if (PyList_Append(p->refs, Py_None) < 0) |
Kristján Valur Jónsson | e178187 | 2013-03-20 11:43:57 -0700 | [diff] [blame] | 866 | return -1; |
| 867 | return idx; |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 868 | } else |
Kristján Valur Jónsson | e178187 | 2013-03-20 11:43:57 -0700 | [diff] [blame] | 869 | return 0; |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 870 | } |
| 871 | |
Kristján Valur Jónsson | e178187 | 2013-03-20 11:43:57 -0700 | [diff] [blame] | 872 | /* insert the new object 'o' to the reflist at previously |
| 873 | * allocated index 'idx'. |
| 874 | * 'o' can be NULL, in which case nothing is done. |
| 875 | * if 'o' was non-NULL, and the function succeeds, 'o' is returned. |
| 876 | * if 'o' was non-NULL, and the function fails, 'o' is released and |
| 877 | * NULL returned. This simplifies error checking at the call site since |
| 878 | * a single test for NULL for the function result is enough. |
| 879 | */ |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 880 | static PyObject * |
| 881 | r_ref_insert(PyObject *o, Py_ssize_t idx, int flag, RFILE *p) |
| 882 | { |
Kristján Valur Jónsson | e178187 | 2013-03-20 11:43:57 -0700 | [diff] [blame] | 883 | if (o != NULL && flag) { /* currently only FLAG_REF is defined */ |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 884 | PyObject *tmp = PyList_GET_ITEM(p->refs, idx); |
| 885 | Py_INCREF(o); |
| 886 | PyList_SET_ITEM(p->refs, idx, o); |
| 887 | Py_DECREF(tmp); |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 888 | } |
| 889 | return o; |
| 890 | } |
| 891 | |
| 892 | /* combination of both above, used when an object can be |
| 893 | * created whenever it is seen in the file, as opposed to |
| 894 | * after having loaded its sub-objects. |
| 895 | */ |
| 896 | static PyObject * |
| 897 | r_ref(PyObject *o, int flag, RFILE *p) |
| 898 | { |
Victor Stinner | 359fabc | 2013-10-31 17:09:01 +0100 | [diff] [blame] | 899 | assert(flag & FLAG_REF); |
| 900 | if (o == NULL) |
| 901 | return NULL; |
| 902 | if (PyList_Append(p->refs, o) < 0) { |
| 903 | Py_DECREF(o); /* release the new object */ |
| 904 | return NULL; |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 905 | } |
| 906 | return o; |
| 907 | } |
Mark Dickinson | bd79264 | 2009-03-18 20:06:12 +0000 | [diff] [blame] | 908 | |
| 909 | static PyObject * |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 910 | r_object(RFILE *p) |
Guido van Rossum | dce2e3d | 1991-06-04 19:42:30 +0000 | [diff] [blame] | 911 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 912 | /* NULL is a valid return value, it does not necessarily means that |
| 913 | an exception is set. */ |
| 914 | PyObject *v, *v2; |
Benjamin Peterson | eddb0a7 | 2013-03-20 00:40:07 -0500 | [diff] [blame] | 915 | Py_ssize_t idx = 0; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 916 | long i, n; |
Kristján Valur Jónsson | 6168362 | 2013-03-20 14:26:33 -0700 | [diff] [blame] | 917 | int type, code = r_byte(p); |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 918 | int flag, is_interned = 0; |
Christian Heimes | 3572842 | 2013-10-13 02:29:06 +0200 | [diff] [blame] | 919 | PyObject *retval = NULL; |
Guido van Rossum | d59da4b | 2007-05-22 18:11:13 +0000 | [diff] [blame] | 920 | |
Kristján Valur Jónsson | 6168362 | 2013-03-20 14:26:33 -0700 | [diff] [blame] | 921 | if (code == EOF) { |
| 922 | PyErr_SetString(PyExc_EOFError, |
| 923 | "EOF read where object expected"); |
| 924 | return NULL; |
| 925 | } |
| 926 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 927 | p->depth++; |
Guido van Rossum | d59da4b | 2007-05-22 18:11:13 +0000 | [diff] [blame] | 928 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 929 | if (p->depth > MAX_MARSHAL_STACK_DEPTH) { |
| 930 | p->depth--; |
| 931 | PyErr_SetString(PyExc_ValueError, "recursion limit exceeded"); |
| 932 | return NULL; |
| 933 | } |
Tim Peters | d9b9ac8 | 2001-01-28 00:27:39 +0000 | [diff] [blame] | 934 | |
Kristján Valur Jónsson | 6168362 | 2013-03-20 14:26:33 -0700 | [diff] [blame] | 935 | flag = code & FLAG_REF; |
| 936 | type = code & ~FLAG_REF; |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 937 | |
| 938 | #define R_REF(O) do{\ |
Kristján Valur Jónsson | e178187 | 2013-03-20 11:43:57 -0700 | [diff] [blame] | 939 | if (flag) \ |
| 940 | O = r_ref(O, flag, p);\ |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 941 | } while (0) |
| 942 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 943 | switch (type) { |
Tim Peters | d9b9ac8 | 2001-01-28 00:27:39 +0000 | [diff] [blame] | 944 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 945 | case TYPE_NULL: |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 946 | break; |
Tim Peters | d9b9ac8 | 2001-01-28 00:27:39 +0000 | [diff] [blame] | 947 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 948 | case TYPE_NONE: |
| 949 | Py_INCREF(Py_None); |
| 950 | retval = Py_None; |
| 951 | break; |
Tim Peters | d9b9ac8 | 2001-01-28 00:27:39 +0000 | [diff] [blame] | 952 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 953 | case TYPE_STOPITER: |
| 954 | Py_INCREF(PyExc_StopIteration); |
| 955 | retval = PyExc_StopIteration; |
| 956 | break; |
Tim Peters | 5ca576e | 2001-06-18 22:08:13 +0000 | [diff] [blame] | 957 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 958 | case TYPE_ELLIPSIS: |
| 959 | Py_INCREF(Py_Ellipsis); |
| 960 | retval = Py_Ellipsis; |
| 961 | break; |
Tim Peters | d9b9ac8 | 2001-01-28 00:27:39 +0000 | [diff] [blame] | 962 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 963 | case TYPE_FALSE: |
| 964 | Py_INCREF(Py_False); |
| 965 | retval = Py_False; |
| 966 | break; |
Guido van Rossum | 77f6a65 | 2002-04-03 22:41:51 +0000 | [diff] [blame] | 967 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 968 | case TYPE_TRUE: |
| 969 | Py_INCREF(Py_True); |
| 970 | retval = Py_True; |
| 971 | break; |
Guido van Rossum | 77f6a65 | 2002-04-03 22:41:51 +0000 | [diff] [blame] | 972 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 973 | case TYPE_INT: |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 974 | n = r_long(p); |
| 975 | retval = PyErr_Occurred() ? NULL : PyLong_FromLong(n); |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 976 | R_REF(retval); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 977 | break; |
Tim Peters | d9b9ac8 | 2001-01-28 00:27:39 +0000 | [diff] [blame] | 978 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 979 | case TYPE_LONG: |
| 980 | retval = r_PyLong(p); |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 981 | R_REF(retval); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 982 | break; |
Tim Peters | d9b9ac8 | 2001-01-28 00:27:39 +0000 | [diff] [blame] | 983 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 984 | case TYPE_FLOAT: |
| 985 | { |
Serhiy Storchaka | ef1585e | 2015-12-25 20:01:53 +0200 | [diff] [blame] | 986 | char buf[256]; |
| 987 | const char *ptr; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 988 | double dx; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 989 | n = r_byte(p); |
Serhiy Storchaka | 3641a74 | 2013-07-11 22:20:47 +0300 | [diff] [blame] | 990 | if (n == EOF) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 991 | PyErr_SetString(PyExc_EOFError, |
| 992 | "EOF read where object expected"); |
| 993 | break; |
| 994 | } |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 995 | ptr = r_string(n, p); |
| 996 | if (ptr == NULL) |
Serhiy Storchaka | 3641a74 | 2013-07-11 22:20:47 +0300 | [diff] [blame] | 997 | break; |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 998 | memcpy(buf, ptr, n); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 999 | buf[n] = '\0'; |
| 1000 | dx = PyOS_string_to_double(buf, NULL, NULL); |
| 1001 | if (dx == -1.0 && PyErr_Occurred()) |
| 1002 | break; |
| 1003 | retval = PyFloat_FromDouble(dx); |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 1004 | R_REF(retval); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1005 | break; |
| 1006 | } |
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_BINARY_FLOAT: |
| 1009 | { |
Serhiy Storchaka | ef1585e | 2015-12-25 20:01:53 +0200 | [diff] [blame] | 1010 | const unsigned char *buf; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1011 | double x; |
Serhiy Storchaka | ef1585e | 2015-12-25 20:01:53 +0200 | [diff] [blame] | 1012 | buf = (const unsigned char *) r_string(8, p); |
Kristján Valur Jónsson | 5983258 | 2013-10-13 13:41:59 +0000 | [diff] [blame] | 1013 | if (buf == NULL) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1014 | break; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1015 | x = _PyFloat_Unpack8(buf, 1); |
Kristján Valur Jónsson | 5983258 | 2013-10-13 13:41:59 +0000 | [diff] [blame] | 1016 | if (x == -1.0 && PyErr_Occurred()) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1017 | break; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1018 | retval = PyFloat_FromDouble(x); |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 1019 | R_REF(retval); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1020 | break; |
| 1021 | } |
Michael W. Hudson | df88846 | 2005-06-03 14:41:55 +0000 | [diff] [blame] | 1022 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1023 | case TYPE_COMPLEX: |
| 1024 | { |
Serhiy Storchaka | ef1585e | 2015-12-25 20:01:53 +0200 | [diff] [blame] | 1025 | char buf[256]; |
| 1026 | const char *ptr; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1027 | Py_complex c; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1028 | n = r_byte(p); |
Serhiy Storchaka | 3641a74 | 2013-07-11 22:20:47 +0300 | [diff] [blame] | 1029 | if (n == EOF) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1030 | PyErr_SetString(PyExc_EOFError, |
| 1031 | "EOF read where object expected"); |
| 1032 | break; |
| 1033 | } |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 1034 | ptr = r_string(n, p); |
| 1035 | if (ptr == NULL) |
Serhiy Storchaka | 3641a74 | 2013-07-11 22:20:47 +0300 | [diff] [blame] | 1036 | break; |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 1037 | memcpy(buf, ptr, n); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1038 | buf[n] = '\0'; |
| 1039 | c.real = PyOS_string_to_double(buf, NULL, NULL); |
| 1040 | if (c.real == -1.0 && PyErr_Occurred()) |
| 1041 | break; |
| 1042 | n = r_byte(p); |
Serhiy Storchaka | 3641a74 | 2013-07-11 22:20:47 +0300 | [diff] [blame] | 1043 | if (n == EOF) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1044 | PyErr_SetString(PyExc_EOFError, |
| 1045 | "EOF read where object expected"); |
| 1046 | break; |
| 1047 | } |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 1048 | ptr = r_string(n, p); |
| 1049 | if (ptr == NULL) |
Serhiy Storchaka | 3641a74 | 2013-07-11 22:20:47 +0300 | [diff] [blame] | 1050 | break; |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 1051 | memcpy(buf, ptr, n); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1052 | buf[n] = '\0'; |
| 1053 | c.imag = PyOS_string_to_double(buf, NULL, NULL); |
| 1054 | if (c.imag == -1.0 && PyErr_Occurred()) |
| 1055 | break; |
| 1056 | retval = PyComplex_FromCComplex(c); |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 1057 | R_REF(retval); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1058 | break; |
| 1059 | } |
Michael W. Hudson | df88846 | 2005-06-03 14:41:55 +0000 | [diff] [blame] | 1060 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1061 | case TYPE_BINARY_COMPLEX: |
| 1062 | { |
Serhiy Storchaka | ef1585e | 2015-12-25 20:01:53 +0200 | [diff] [blame] | 1063 | const unsigned char *buf; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1064 | Py_complex c; |
Serhiy Storchaka | ef1585e | 2015-12-25 20:01:53 +0200 | [diff] [blame] | 1065 | buf = (const unsigned char *) r_string(8, p); |
Kristján Valur Jónsson | 5983258 | 2013-10-13 13:41:59 +0000 | [diff] [blame] | 1066 | if (buf == NULL) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1067 | break; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1068 | c.real = _PyFloat_Unpack8(buf, 1); |
Kristján Valur Jónsson | 5983258 | 2013-10-13 13:41:59 +0000 | [diff] [blame] | 1069 | if (c.real == -1.0 && PyErr_Occurred()) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1070 | break; |
Serhiy Storchaka | ef1585e | 2015-12-25 20:01:53 +0200 | [diff] [blame] | 1071 | buf = (const unsigned char *) r_string(8, p); |
Kristján Valur Jónsson | 5983258 | 2013-10-13 13:41:59 +0000 | [diff] [blame] | 1072 | if (buf == NULL) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1073 | break; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1074 | c.imag = _PyFloat_Unpack8(buf, 1); |
Kristján Valur Jónsson | 5983258 | 2013-10-13 13:41:59 +0000 | [diff] [blame] | 1075 | if (c.imag == -1.0 && PyErr_Occurred()) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1076 | break; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1077 | retval = PyComplex_FromCComplex(c); |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 1078 | R_REF(retval); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1079 | break; |
| 1080 | } |
Tim Peters | d9b9ac8 | 2001-01-28 00:27:39 +0000 | [diff] [blame] | 1081 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1082 | case TYPE_STRING: |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 1083 | { |
Serhiy Storchaka | ef1585e | 2015-12-25 20:01:53 +0200 | [diff] [blame] | 1084 | const char *ptr; |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 1085 | n = r_long(p); |
Kristján Valur Jónsson | 5983258 | 2013-10-13 13:41:59 +0000 | [diff] [blame] | 1086 | if (PyErr_Occurred()) |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 1087 | break; |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 1088 | if (n < 0 || n > SIZE32_MAX) { |
| 1089 | PyErr_SetString(PyExc_ValueError, "bad marshal data (string size out of range)"); |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 1090 | break; |
| 1091 | } |
| 1092 | v = PyBytes_FromStringAndSize((char *)NULL, n); |
Kristján Valur Jónsson | 5983258 | 2013-10-13 13:41:59 +0000 | [diff] [blame] | 1093 | if (v == NULL) |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 1094 | break; |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 1095 | ptr = r_string(n, p); |
| 1096 | if (ptr == NULL) { |
| 1097 | Py_DECREF(v); |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 1098 | break; |
| 1099 | } |
| 1100 | memcpy(PyBytes_AS_STRING(v), ptr, n); |
| 1101 | retval = v; |
| 1102 | R_REF(retval); |
| 1103 | break; |
| 1104 | } |
| 1105 | |
| 1106 | case TYPE_ASCII_INTERNED: |
| 1107 | is_interned = 1; |
| 1108 | case TYPE_ASCII: |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1109 | n = r_long(p); |
Kristján Valur Jónsson | 5983258 | 2013-10-13 13:41:59 +0000 | [diff] [blame] | 1110 | if (PyErr_Occurred()) |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 1111 | break; |
Serhiy Storchaka | 7e01911 | 2013-02-13 12:08:15 +0200 | [diff] [blame] | 1112 | if (n < 0 || n > SIZE32_MAX) { |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 1113 | PyErr_SetString(PyExc_ValueError, "bad marshal data (unicode size out of range)"); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1114 | break; |
| 1115 | } |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 1116 | goto _read_ascii; |
Tim Peters | d9b9ac8 | 2001-01-28 00:27:39 +0000 | [diff] [blame] | 1117 | |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 1118 | case TYPE_SHORT_ASCII_INTERNED: |
| 1119 | is_interned = 1; |
| 1120 | case TYPE_SHORT_ASCII: |
| 1121 | n = r_byte(p); |
| 1122 | if (n == EOF) { |
| 1123 | PyErr_SetString(PyExc_EOFError, |
| 1124 | "EOF read where object expected"); |
| 1125 | break; |
| 1126 | } |
| 1127 | _read_ascii: |
| 1128 | { |
Serhiy Storchaka | ef1585e | 2015-12-25 20:01:53 +0200 | [diff] [blame] | 1129 | const char *ptr; |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 1130 | ptr = r_string(n, p); |
Kristján Valur Jónsson | 5983258 | 2013-10-13 13:41:59 +0000 | [diff] [blame] | 1131 | if (ptr == NULL) |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 1132 | break; |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 1133 | v = PyUnicode_FromKindAndData(PyUnicode_1BYTE_KIND, ptr, n); |
Kristján Valur Jónsson | 5983258 | 2013-10-13 13:41:59 +0000 | [diff] [blame] | 1134 | if (v == NULL) |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 1135 | break; |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 1136 | if (is_interned) |
| 1137 | PyUnicode_InternInPlace(&v); |
| 1138 | retval = v; |
| 1139 | R_REF(retval); |
| 1140 | break; |
| 1141 | } |
| 1142 | |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 1143 | case TYPE_INTERNED: |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 1144 | is_interned = 1; |
| 1145 | case TYPE_UNICODE: |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1146 | { |
Serhiy Storchaka | ef1585e | 2015-12-25 20:01:53 +0200 | [diff] [blame] | 1147 | const char *buffer; |
Guido van Rossum | c279b53 | 2000-03-10 23:03:02 +0000 | [diff] [blame] | 1148 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1149 | n = r_long(p); |
Kristján Valur Jónsson | 5983258 | 2013-10-13 13:41:59 +0000 | [diff] [blame] | 1150 | if (PyErr_Occurred()) |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 1151 | break; |
Serhiy Storchaka | 7e01911 | 2013-02-13 12:08:15 +0200 | [diff] [blame] | 1152 | if (n < 0 || n > SIZE32_MAX) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1153 | PyErr_SetString(PyExc_ValueError, "bad marshal data (unicode size out of range)"); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1154 | break; |
| 1155 | } |
Victor Stinner | f1913ca | 2013-06-21 19:08:06 +0200 | [diff] [blame] | 1156 | if (n != 0) { |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 1157 | buffer = r_string(n, p); |
Kristján Valur Jónsson | 5983258 | 2013-10-13 13:41:59 +0000 | [diff] [blame] | 1158 | if (buffer == NULL) |
Victor Stinner | f1913ca | 2013-06-21 19:08:06 +0200 | [diff] [blame] | 1159 | break; |
Victor Stinner | f1913ca | 2013-06-21 19:08:06 +0200 | [diff] [blame] | 1160 | v = PyUnicode_DecodeUTF8(buffer, n, "surrogatepass"); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1161 | } |
Victor Stinner | f1913ca | 2013-06-21 19:08:06 +0200 | [diff] [blame] | 1162 | else { |
| 1163 | v = PyUnicode_New(0, 0); |
| 1164 | } |
Kristján Valur Jónsson | 5983258 | 2013-10-13 13:41:59 +0000 | [diff] [blame] | 1165 | if (v == NULL) |
Victor Stinner | 3a8b79d | 2013-07-08 22:23:32 +0200 | [diff] [blame] | 1166 | break; |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 1167 | if (is_interned) |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 1168 | PyUnicode_InternInPlace(&v); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1169 | retval = v; |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 1170 | R_REF(retval); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1171 | break; |
| 1172 | } |
Tim Peters | d9b9ac8 | 2001-01-28 00:27:39 +0000 | [diff] [blame] | 1173 | |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 1174 | case TYPE_SMALL_TUPLE: |
| 1175 | n = (unsigned char) r_byte(p); |
Victor Stinner | b1b7b18 | 2013-10-31 17:07:08 +0100 | [diff] [blame] | 1176 | if (PyErr_Occurred()) |
| 1177 | break; |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 1178 | goto _read_tuple; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1179 | case TYPE_TUPLE: |
| 1180 | n = r_long(p); |
Kristján Valur Jónsson | 5983258 | 2013-10-13 13:41:59 +0000 | [diff] [blame] | 1181 | if (PyErr_Occurred()) |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 1182 | break; |
Serhiy Storchaka | 7e01911 | 2013-02-13 12:08:15 +0200 | [diff] [blame] | 1183 | if (n < 0 || n > SIZE32_MAX) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1184 | PyErr_SetString(PyExc_ValueError, "bad marshal data (tuple size out of range)"); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1185 | break; |
| 1186 | } |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 1187 | _read_tuple: |
Serhiy Storchaka | 7e01911 | 2013-02-13 12:08:15 +0200 | [diff] [blame] | 1188 | v = PyTuple_New(n); |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 1189 | R_REF(v); |
Kristján Valur Jónsson | 5983258 | 2013-10-13 13:41:59 +0000 | [diff] [blame] | 1190 | if (v == NULL) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1191 | break; |
Victor Stinner | d5cae6f | 2013-10-31 17:14:52 +0100 | [diff] [blame] | 1192 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1193 | for (i = 0; i < n; i++) { |
| 1194 | v2 = r_object(p); |
| 1195 | if ( v2 == NULL ) { |
| 1196 | if (!PyErr_Occurred()) |
| 1197 | PyErr_SetString(PyExc_TypeError, |
| 1198 | "NULL object in marshal data for tuple"); |
| 1199 | Py_DECREF(v); |
| 1200 | v = NULL; |
| 1201 | break; |
| 1202 | } |
Serhiy Storchaka | 7e01911 | 2013-02-13 12:08:15 +0200 | [diff] [blame] | 1203 | PyTuple_SET_ITEM(v, i, v2); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1204 | } |
| 1205 | retval = v; |
| 1206 | break; |
Tim Peters | d9b9ac8 | 2001-01-28 00:27:39 +0000 | [diff] [blame] | 1207 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1208 | case TYPE_LIST: |
| 1209 | n = r_long(p); |
Kristján Valur Jónsson | 5983258 | 2013-10-13 13:41:59 +0000 | [diff] [blame] | 1210 | if (PyErr_Occurred()) |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 1211 | break; |
Serhiy Storchaka | 7e01911 | 2013-02-13 12:08:15 +0200 | [diff] [blame] | 1212 | if (n < 0 || n > SIZE32_MAX) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1213 | PyErr_SetString(PyExc_ValueError, "bad marshal data (list size out of range)"); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1214 | break; |
| 1215 | } |
Serhiy Storchaka | 7e01911 | 2013-02-13 12:08:15 +0200 | [diff] [blame] | 1216 | v = PyList_New(n); |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 1217 | R_REF(v); |
Kristján Valur Jónsson | 5983258 | 2013-10-13 13:41:59 +0000 | [diff] [blame] | 1218 | if (v == NULL) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1219 | break; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1220 | for (i = 0; i < n; i++) { |
| 1221 | v2 = r_object(p); |
| 1222 | if ( v2 == NULL ) { |
| 1223 | if (!PyErr_Occurred()) |
| 1224 | PyErr_SetString(PyExc_TypeError, |
| 1225 | "NULL object in marshal data for list"); |
| 1226 | Py_DECREF(v); |
| 1227 | v = NULL; |
| 1228 | break; |
| 1229 | } |
Serhiy Storchaka | 7e01911 | 2013-02-13 12:08:15 +0200 | [diff] [blame] | 1230 | PyList_SET_ITEM(v, i, v2); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1231 | } |
| 1232 | retval = v; |
| 1233 | break; |
Tim Peters | d9b9ac8 | 2001-01-28 00:27:39 +0000 | [diff] [blame] | 1234 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1235 | case TYPE_DICT: |
| 1236 | v = PyDict_New(); |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 1237 | R_REF(v); |
Kristján Valur Jónsson | 5983258 | 2013-10-13 13:41:59 +0000 | [diff] [blame] | 1238 | if (v == NULL) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1239 | break; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1240 | for (;;) { |
| 1241 | PyObject *key, *val; |
| 1242 | key = r_object(p); |
| 1243 | if (key == NULL) |
| 1244 | break; |
| 1245 | val = r_object(p); |
Victor Stinner | d5cae6f | 2013-10-31 17:14:52 +0100 | [diff] [blame] | 1246 | if (val == NULL) { |
| 1247 | Py_DECREF(key); |
| 1248 | break; |
| 1249 | } |
| 1250 | if (PyDict_SetItem(v, key, val) < 0) { |
| 1251 | Py_DECREF(key); |
| 1252 | Py_DECREF(val); |
| 1253 | break; |
| 1254 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1255 | Py_DECREF(key); |
Victor Stinner | d5cae6f | 2013-10-31 17:14:52 +0100 | [diff] [blame] | 1256 | Py_DECREF(val); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1257 | } |
| 1258 | if (PyErr_Occurred()) { |
| 1259 | Py_DECREF(v); |
| 1260 | v = NULL; |
| 1261 | } |
| 1262 | retval = v; |
| 1263 | break; |
Tim Peters | d9b9ac8 | 2001-01-28 00:27:39 +0000 | [diff] [blame] | 1264 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1265 | case TYPE_SET: |
| 1266 | case TYPE_FROZENSET: |
| 1267 | n = r_long(p); |
Kristján Valur Jónsson | 5983258 | 2013-10-13 13:41:59 +0000 | [diff] [blame] | 1268 | if (PyErr_Occurred()) |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 1269 | break; |
Serhiy Storchaka | 7e01911 | 2013-02-13 12:08:15 +0200 | [diff] [blame] | 1270 | if (n < 0 || n > SIZE32_MAX) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1271 | PyErr_SetString(PyExc_ValueError, "bad marshal data (set size out of range)"); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1272 | break; |
| 1273 | } |
Victor Stinner | d5cae6f | 2013-10-31 17:14:52 +0100 | [diff] [blame] | 1274 | |
Victor Stinner | 1aa7893 | 2016-01-23 14:15:48 +0100 | [diff] [blame] | 1275 | if (n == 0 && type == TYPE_FROZENSET) { |
| 1276 | /* call frozenset() to get the empty frozenset singleton */ |
| 1277 | v = PyObject_CallFunction((PyObject*)&PyFrozenSet_Type, NULL); |
| 1278 | if (v == NULL) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1279 | break; |
Victor Stinner | 1aa7893 | 2016-01-23 14:15:48 +0100 | [diff] [blame] | 1280 | R_REF(v); |
| 1281 | retval = v; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1282 | } |
Victor Stinner | 1aa7893 | 2016-01-23 14:15:48 +0100 | [diff] [blame] | 1283 | else { |
| 1284 | v = (type == TYPE_SET) ? PySet_New(NULL) : PyFrozenSet_New(NULL); |
| 1285 | if (type == TYPE_SET) { |
| 1286 | R_REF(v); |
| 1287 | } else { |
| 1288 | /* must use delayed registration of frozensets because they must |
| 1289 | * be init with a refcount of 1 |
| 1290 | */ |
| 1291 | idx = r_ref_reserve(flag, p); |
| 1292 | if (idx < 0) |
| 1293 | Py_CLEAR(v); /* signal error */ |
| 1294 | } |
| 1295 | if (v == NULL) |
| 1296 | break; |
| 1297 | |
| 1298 | for (i = 0; i < n; i++) { |
| 1299 | v2 = r_object(p); |
| 1300 | if ( v2 == NULL ) { |
| 1301 | if (!PyErr_Occurred()) |
| 1302 | PyErr_SetString(PyExc_TypeError, |
| 1303 | "NULL object in marshal data for set"); |
| 1304 | Py_DECREF(v); |
| 1305 | v = NULL; |
| 1306 | break; |
| 1307 | } |
| 1308 | if (PySet_Add(v, v2) == -1) { |
| 1309 | Py_DECREF(v); |
| 1310 | Py_DECREF(v2); |
| 1311 | v = NULL; |
| 1312 | break; |
| 1313 | } |
| 1314 | Py_DECREF(v2); |
| 1315 | } |
| 1316 | if (type != TYPE_SET) |
| 1317 | v = r_ref_insert(v, idx, flag, p); |
| 1318 | retval = v; |
| 1319 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1320 | break; |
Raymond Hettinger | a422c34 | 2005-01-11 03:03:27 +0000 | [diff] [blame] | 1321 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1322 | case TYPE_CODE: |
| 1323 | { |
| 1324 | int argcount; |
| 1325 | int kwonlyargcount; |
| 1326 | int nlocals; |
| 1327 | int stacksize; |
| 1328 | int flags; |
| 1329 | PyObject *code = NULL; |
| 1330 | PyObject *consts = NULL; |
| 1331 | PyObject *names = NULL; |
| 1332 | PyObject *varnames = NULL; |
| 1333 | PyObject *freevars = NULL; |
| 1334 | PyObject *cellvars = NULL; |
| 1335 | PyObject *filename = NULL; |
| 1336 | PyObject *name = NULL; |
| 1337 | int firstlineno; |
| 1338 | PyObject *lnotab = NULL; |
Antoine Pitrou | e9bbe8b | 2013-04-13 22:41:09 +0200 | [diff] [blame] | 1339 | |
Kristján Valur Jónsson | e178187 | 2013-03-20 11:43:57 -0700 | [diff] [blame] | 1340 | idx = r_ref_reserve(flag, p); |
Kristján Valur Jónsson | 5983258 | 2013-10-13 13:41:59 +0000 | [diff] [blame] | 1341 | if (idx < 0) |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 1342 | break; |
Tim Peters | d9b9ac8 | 2001-01-28 00:27:39 +0000 | [diff] [blame] | 1343 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1344 | v = NULL; |
Michael W. Hudson | df88846 | 2005-06-03 14:41:55 +0000 | [diff] [blame] | 1345 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1346 | /* XXX ignore long->int overflows for now */ |
| 1347 | argcount = (int)r_long(p); |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 1348 | if (PyErr_Occurred()) |
| 1349 | goto code_error; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1350 | kwonlyargcount = (int)r_long(p); |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 1351 | if (PyErr_Occurred()) |
| 1352 | goto code_error; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1353 | nlocals = (int)r_long(p); |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 1354 | if (PyErr_Occurred()) |
| 1355 | goto code_error; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1356 | stacksize = (int)r_long(p); |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 1357 | if (PyErr_Occurred()) |
| 1358 | goto code_error; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1359 | flags = (int)r_long(p); |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 1360 | if (PyErr_Occurred()) |
| 1361 | goto code_error; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1362 | code = r_object(p); |
| 1363 | if (code == NULL) |
| 1364 | goto code_error; |
| 1365 | consts = r_object(p); |
| 1366 | if (consts == NULL) |
| 1367 | goto code_error; |
| 1368 | names = r_object(p); |
| 1369 | if (names == NULL) |
| 1370 | goto code_error; |
| 1371 | varnames = r_object(p); |
| 1372 | if (varnames == NULL) |
| 1373 | goto code_error; |
| 1374 | freevars = r_object(p); |
| 1375 | if (freevars == NULL) |
| 1376 | goto code_error; |
| 1377 | cellvars = r_object(p); |
| 1378 | if (cellvars == NULL) |
| 1379 | goto code_error; |
| 1380 | filename = r_object(p); |
| 1381 | if (filename == NULL) |
| 1382 | goto code_error; |
Benjamin Peterson | 43b0686 | 2011-05-27 09:08:01 -0500 | [diff] [blame] | 1383 | if (PyUnicode_CheckExact(filename)) { |
| 1384 | if (p->current_filename != NULL) { |
| 1385 | if (!PyUnicode_Compare(filename, p->current_filename)) { |
| 1386 | Py_DECREF(filename); |
| 1387 | Py_INCREF(p->current_filename); |
| 1388 | filename = p->current_filename; |
| 1389 | } |
| 1390 | } |
| 1391 | else { |
| 1392 | p->current_filename = filename; |
| 1393 | } |
| 1394 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1395 | name = r_object(p); |
| 1396 | if (name == NULL) |
| 1397 | goto code_error; |
| 1398 | firstlineno = (int)r_long(p); |
Kristján Valur Jónsson | 0a7697b | 2013-10-13 15:19:56 +0000 | [diff] [blame] | 1399 | if (firstlineno == -1 && PyErr_Occurred()) |
| 1400 | break; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1401 | lnotab = r_object(p); |
| 1402 | if (lnotab == NULL) |
| 1403 | goto code_error; |
Michael W. Hudson | df88846 | 2005-06-03 14:41:55 +0000 | [diff] [blame] | 1404 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1405 | v = (PyObject *) PyCode_New( |
| 1406 | argcount, kwonlyargcount, |
| 1407 | nlocals, stacksize, flags, |
| 1408 | code, consts, names, varnames, |
| 1409 | freevars, cellvars, filename, name, |
| 1410 | firstlineno, lnotab); |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 1411 | v = r_ref_insert(v, idx, flag, p); |
Tim Peters | d9b9ac8 | 2001-01-28 00:27:39 +0000 | [diff] [blame] | 1412 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1413 | code_error: |
| 1414 | Py_XDECREF(code); |
| 1415 | Py_XDECREF(consts); |
| 1416 | Py_XDECREF(names); |
| 1417 | Py_XDECREF(varnames); |
| 1418 | Py_XDECREF(freevars); |
| 1419 | Py_XDECREF(cellvars); |
| 1420 | Py_XDECREF(filename); |
| 1421 | Py_XDECREF(name); |
| 1422 | Py_XDECREF(lnotab); |
| 1423 | } |
| 1424 | retval = v; |
| 1425 | break; |
Tim Peters | d9b9ac8 | 2001-01-28 00:27:39 +0000 | [diff] [blame] | 1426 | |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 1427 | case TYPE_REF: |
| 1428 | n = r_long(p); |
| 1429 | if (n < 0 || n >= PyList_GET_SIZE(p->refs)) { |
Kristján Valur Jónsson | 0a7697b | 2013-10-13 15:19:56 +0000 | [diff] [blame] | 1430 | if (n == -1 && PyErr_Occurred()) |
| 1431 | break; |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 1432 | PyErr_SetString(PyExc_ValueError, "bad marshal data (invalid reference)"); |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 1433 | break; |
| 1434 | } |
| 1435 | v = PyList_GET_ITEM(p->refs, n); |
| 1436 | if (v == Py_None) { |
| 1437 | PyErr_SetString(PyExc_ValueError, "bad marshal data (invalid reference)"); |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 1438 | break; |
| 1439 | } |
| 1440 | Py_INCREF(v); |
| 1441 | retval = v; |
| 1442 | break; |
| 1443 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1444 | default: |
| 1445 | /* Bogus data got written, which isn't ideal. |
| 1446 | This will let you keep working and recover. */ |
| 1447 | PyErr_SetString(PyExc_ValueError, "bad marshal data (unknown type code)"); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1448 | break; |
| 1449 | |
| 1450 | } |
| 1451 | p->depth--; |
| 1452 | return retval; |
Guido van Rossum | dce2e3d | 1991-06-04 19:42:30 +0000 | [diff] [blame] | 1453 | } |
| 1454 | |
Neal Norwitz | d85c452 | 2004-06-13 20:31:49 +0000 | [diff] [blame] | 1455 | static PyObject * |
Armin Rigo | 01ab279 | 2004-03-26 15:09:27 +0000 | [diff] [blame] | 1456 | read_object(RFILE *p) |
| 1457 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1458 | PyObject *v; |
| 1459 | if (PyErr_Occurred()) { |
| 1460 | fprintf(stderr, "XXX readobject called with exception set\n"); |
| 1461 | return NULL; |
| 1462 | } |
| 1463 | v = r_object(p); |
| 1464 | if (v == NULL && !PyErr_Occurred()) |
| 1465 | PyErr_SetString(PyExc_TypeError, "NULL object in marshal data for object"); |
| 1466 | return v; |
Armin Rigo | 01ab279 | 2004-03-26 15:09:27 +0000 | [diff] [blame] | 1467 | } |
| 1468 | |
Guido van Rossum | b8cf3e6 | 2001-10-19 01:46:21 +0000 | [diff] [blame] | 1469 | int |
| 1470 | PyMarshal_ReadShortFromFile(FILE *fp) |
| 1471 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1472 | RFILE rf; |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 1473 | int res; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1474 | assert(fp); |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 1475 | rf.readable = NULL; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1476 | rf.fp = fp; |
Benjamin Peterson | 43b0686 | 2011-05-27 09:08:01 -0500 | [diff] [blame] | 1477 | rf.current_filename = NULL; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1478 | rf.end = rf.ptr = NULL; |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 1479 | rf.buf = NULL; |
| 1480 | res = r_short(&rf); |
| 1481 | if (rf.buf != NULL) |
| 1482 | PyMem_FREE(rf.buf); |
| 1483 | return res; |
Guido van Rossum | b8cf3e6 | 2001-10-19 01:46:21 +0000 | [diff] [blame] | 1484 | } |
| 1485 | |
Guido van Rossum | 0b0db8e | 1993-01-21 16:07:51 +0000 | [diff] [blame] | 1486 | long |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 1487 | PyMarshal_ReadLongFromFile(FILE *fp) |
Guido van Rossum | 0b0db8e | 1993-01-21 16:07:51 +0000 | [diff] [blame] | 1488 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1489 | RFILE rf; |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 1490 | long res; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1491 | rf.fp = fp; |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 1492 | rf.readable = NULL; |
Benjamin Peterson | 43b0686 | 2011-05-27 09:08:01 -0500 | [diff] [blame] | 1493 | rf.current_filename = NULL; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1494 | rf.ptr = rf.end = NULL; |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 1495 | rf.buf = NULL; |
| 1496 | res = r_long(&rf); |
| 1497 | if (rf.buf != NULL) |
| 1498 | PyMem_FREE(rf.buf); |
| 1499 | return res; |
Guido van Rossum | 0b0db8e | 1993-01-21 16:07:51 +0000 | [diff] [blame] | 1500 | } |
| 1501 | |
Steve Dower | f2f373f | 2015-02-21 08:44:05 -0800 | [diff] [blame] | 1502 | /* Return size of file in bytes; < 0 if unknown or INT_MAX if too big */ |
Tim Peters | 691e0e9 | 2001-01-18 04:39:16 +0000 | [diff] [blame] | 1503 | static off_t |
| 1504 | getfilesize(FILE *fp) |
| 1505 | { |
Steve Dower | f2f373f | 2015-02-21 08:44:05 -0800 | [diff] [blame] | 1506 | struct _Py_stat_struct st; |
Victor Stinner | e134a7f | 2015-03-30 10:09:31 +0200 | [diff] [blame] | 1507 | if (_Py_fstat_noraise(fileno(fp), &st) != 0) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1508 | return -1; |
Steve Dower | f2f373f | 2015-02-21 08:44:05 -0800 | [diff] [blame] | 1509 | #if SIZEOF_OFF_T == 4 |
| 1510 | else if (st.st_size >= INT_MAX) |
| 1511 | return (off_t)INT_MAX; |
| 1512 | #endif |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1513 | else |
Steve Dower | f2f373f | 2015-02-21 08:44:05 -0800 | [diff] [blame] | 1514 | return (off_t)st.st_size; |
Tim Peters | 691e0e9 | 2001-01-18 04:39:16 +0000 | [diff] [blame] | 1515 | } |
Tim Peters | d9b9ac8 | 2001-01-28 00:27:39 +0000 | [diff] [blame] | 1516 | |
Tim Peters | 691e0e9 | 2001-01-18 04:39:16 +0000 | [diff] [blame] | 1517 | /* If we can get the size of the file up-front, and it's reasonably small, |
| 1518 | * read it in one gulp and delegate to ...FromString() instead. Much quicker |
| 1519 | * than reading a byte at a time from file; speeds .pyc imports. |
Tim Peters | d9b9ac8 | 2001-01-28 00:27:39 +0000 | [diff] [blame] | 1520 | * CAUTION: since this may read the entire remainder of the file, don't |
| 1521 | * call it unless you know you're done with the file. |
Tim Peters | 691e0e9 | 2001-01-18 04:39:16 +0000 | [diff] [blame] | 1522 | */ |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1523 | PyObject * |
Tim Peters | d9b9ac8 | 2001-01-28 00:27:39 +0000 | [diff] [blame] | 1524 | PyMarshal_ReadLastObjectFromFile(FILE *fp) |
Guido van Rossum | 0b0db8e | 1993-01-21 16:07:51 +0000 | [diff] [blame] | 1525 | { |
Antoine Pitrou | 5bc7ec9 | 2010-04-21 22:56:22 +0000 | [diff] [blame] | 1526 | /* REASONABLE_FILE_LIMIT is by defn something big enough for Tkinter.pyc. */ |
Tim Peters | 691e0e9 | 2001-01-18 04:39:16 +0000 | [diff] [blame] | 1527 | #define REASONABLE_FILE_LIMIT (1L << 18) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1528 | off_t filesize; |
| 1529 | filesize = getfilesize(fp); |
| 1530 | if (filesize > 0 && filesize <= REASONABLE_FILE_LIMIT) { |
| 1531 | char* pBuf = (char *)PyMem_MALLOC(filesize); |
| 1532 | if (pBuf != NULL) { |
Serhiy Storchaka | 7e01911 | 2013-02-13 12:08:15 +0200 | [diff] [blame] | 1533 | size_t n = fread(pBuf, 1, (size_t)filesize, fp); |
| 1534 | PyObject* v = PyMarshal_ReadObjectFromString(pBuf, n); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1535 | PyMem_FREE(pBuf); |
| 1536 | return v; |
| 1537 | } |
Tim Peters | d9b9ac8 | 2001-01-28 00:27:39 +0000 | [diff] [blame] | 1538 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1539 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1540 | /* We don't have fstat, or we do but the file is larger than |
| 1541 | * REASONABLE_FILE_LIMIT or malloc failed -- read a byte at a time. |
| 1542 | */ |
| 1543 | return PyMarshal_ReadObjectFromFile(fp); |
Tim Peters | d9b9ac8 | 2001-01-28 00:27:39 +0000 | [diff] [blame] | 1544 | |
Tim Peters | 691e0e9 | 2001-01-18 04:39:16 +0000 | [diff] [blame] | 1545 | #undef REASONABLE_FILE_LIMIT |
Guido van Rossum | 0b0db8e | 1993-01-21 16:07:51 +0000 | [diff] [blame] | 1546 | } |
| 1547 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1548 | PyObject * |
Tim Peters | d9b9ac8 | 2001-01-28 00:27:39 +0000 | [diff] [blame] | 1549 | PyMarshal_ReadObjectFromFile(FILE *fp) |
| 1550 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1551 | RFILE rf; |
| 1552 | PyObject *result; |
| 1553 | rf.fp = fp; |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 1554 | rf.readable = NULL; |
Benjamin Peterson | 43b0686 | 2011-05-27 09:08:01 -0500 | [diff] [blame] | 1555 | rf.current_filename = NULL; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1556 | rf.depth = 0; |
| 1557 | rf.ptr = rf.end = NULL; |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 1558 | rf.buf = NULL; |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 1559 | rf.refs = PyList_New(0); |
| 1560 | if (rf.refs == NULL) |
| 1561 | return NULL; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1562 | result = r_object(&rf); |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 1563 | Py_DECREF(rf.refs); |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 1564 | if (rf.buf != NULL) |
| 1565 | PyMem_FREE(rf.buf); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1566 | return result; |
Tim Peters | d9b9ac8 | 2001-01-28 00:27:39 +0000 | [diff] [blame] | 1567 | } |
| 1568 | |
| 1569 | PyObject * |
Serhiy Storchaka | c679227 | 2013-10-19 21:03:34 +0300 | [diff] [blame] | 1570 | PyMarshal_ReadObjectFromString(const char *str, Py_ssize_t len) |
Guido van Rossum | f56e3db | 1993-04-01 20:59:32 +0000 | [diff] [blame] | 1571 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1572 | RFILE rf; |
| 1573 | PyObject *result; |
| 1574 | rf.fp = NULL; |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 1575 | rf.readable = NULL; |
Benjamin Peterson | 43b0686 | 2011-05-27 09:08:01 -0500 | [diff] [blame] | 1576 | rf.current_filename = NULL; |
Serhiy Storchaka | c679227 | 2013-10-19 21:03:34 +0300 | [diff] [blame] | 1577 | rf.ptr = (char *)str; |
| 1578 | rf.end = (char *)str + len; |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 1579 | rf.buf = NULL; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1580 | rf.depth = 0; |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 1581 | rf.refs = PyList_New(0); |
| 1582 | if (rf.refs == NULL) |
| 1583 | return NULL; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1584 | result = r_object(&rf); |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 1585 | Py_DECREF(rf.refs); |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 1586 | if (rf.buf != NULL) |
| 1587 | PyMem_FREE(rf.buf); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1588 | return result; |
Guido van Rossum | f56e3db | 1993-04-01 20:59:32 +0000 | [diff] [blame] | 1589 | } |
| 1590 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1591 | PyObject * |
Martin v. Löwis | ef82d2f | 2004-06-27 16:51:46 +0000 | [diff] [blame] | 1592 | PyMarshal_WriteObjectToString(PyObject *x, int version) |
Guido van Rossum | 3f3bb3d | 1996-08-19 22:07:17 +0000 | [diff] [blame] | 1593 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1594 | WFILE wf; |
Guido van Rossum | e6d3904 | 2007-05-09 00:01:30 +0000 | [diff] [blame] | 1595 | |
Serhiy Storchaka | ce921c62 | 2015-02-11 15:53:31 +0200 | [diff] [blame] | 1596 | memset(&wf, 0, sizeof(wf)); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1597 | wf.str = PyBytes_FromStringAndSize((char *)NULL, 50); |
| 1598 | if (wf.str == NULL) |
| 1599 | return NULL; |
Serhiy Storchaka | c1efe5f | 2015-02-11 15:54:54 +0200 | [diff] [blame] | 1600 | wf.ptr = wf.buf = PyBytes_AS_STRING((PyBytesObject *)wf.str); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1601 | wf.end = wf.ptr + PyBytes_Size(wf.str); |
| 1602 | wf.error = WFERR_OK; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1603 | wf.version = version; |
Serhiy Storchaka | ce921c62 | 2015-02-11 15:53:31 +0200 | [diff] [blame] | 1604 | if (w_init_refs(&wf, version)) { |
| 1605 | Py_DECREF(wf.str); |
| 1606 | return NULL; |
| 1607 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1608 | w_object(x, &wf); |
Serhiy Storchaka | ce921c62 | 2015-02-11 15:53:31 +0200 | [diff] [blame] | 1609 | w_clear_refs(&wf); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1610 | if (wf.str != NULL) { |
| 1611 | char *base = PyBytes_AS_STRING((PyBytesObject *)wf.str); |
| 1612 | if (wf.ptr - base > PY_SSIZE_T_MAX) { |
| 1613 | Py_DECREF(wf.str); |
| 1614 | PyErr_SetString(PyExc_OverflowError, |
| 1615 | "too much marshal data for a string"); |
| 1616 | return NULL; |
| 1617 | } |
| 1618 | if (_PyBytes_Resize(&wf.str, (Py_ssize_t)(wf.ptr - base)) < 0) |
| 1619 | return NULL; |
| 1620 | } |
| 1621 | if (wf.error != WFERR_OK) { |
| 1622 | Py_XDECREF(wf.str); |
| 1623 | if (wf.error == WFERR_NOMEMORY) |
| 1624 | PyErr_NoMemory(); |
| 1625 | else |
| 1626 | PyErr_SetString(PyExc_ValueError, |
| 1627 | (wf.error==WFERR_UNMARSHALLABLE)?"unmarshallable object" |
| 1628 | :"object too deeply nested to marshal"); |
| 1629 | return NULL; |
| 1630 | } |
Antoine Pitrou | 1c13f84 | 2012-03-02 18:22:23 +0100 | [diff] [blame] | 1631 | return wf.str; |
Guido van Rossum | 3f3bb3d | 1996-08-19 22:07:17 +0000 | [diff] [blame] | 1632 | } |
| 1633 | |
Guido van Rossum | 64b4552 | 1991-06-07 13:58:22 +0000 | [diff] [blame] | 1634 | /* And an interface for Python programs... */ |
Guido van Rossum | dce2e3d | 1991-06-04 19:42:30 +0000 | [diff] [blame] | 1635 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1636 | static PyObject * |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 1637 | marshal_dump(PyObject *self, PyObject *args) |
Guido van Rossum | dce2e3d | 1991-06-04 19:42:30 +0000 | [diff] [blame] | 1638 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1639 | /* XXX Quick hack -- need to do this differently */ |
| 1640 | PyObject *x; |
| 1641 | PyObject *f; |
| 1642 | int version = Py_MARSHAL_VERSION; |
| 1643 | PyObject *s; |
| 1644 | PyObject *res; |
Martin v. Löwis | bd928fe | 2011-10-14 10:20:37 +0200 | [diff] [blame] | 1645 | _Py_IDENTIFIER(write); |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 1646 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1647 | if (!PyArg_ParseTuple(args, "OO|i:dump", &x, &f, &version)) |
| 1648 | return NULL; |
| 1649 | s = PyMarshal_WriteObjectToString(x, version); |
| 1650 | if (s == NULL) |
| 1651 | return NULL; |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 1652 | res = _PyObject_CallMethodId(f, &PyId_write, "O", s); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1653 | Py_DECREF(s); |
| 1654 | return res; |
Guido van Rossum | dce2e3d | 1991-06-04 19:42:30 +0000 | [diff] [blame] | 1655 | } |
| 1656 | |
R. David Murray | dd226ea | 2009-05-13 12:27:21 +0000 | [diff] [blame] | 1657 | PyDoc_STRVAR(dump_doc, |
| 1658 | "dump(value, file[, version])\n\ |
| 1659 | \n\ |
| 1660 | Write the value on the open file. The value must be a supported type.\n\ |
| 1661 | The file must be an open file object such as sys.stdout or returned by\n\ |
| 1662 | open() or os.popen(). It must be opened in binary mode ('wb' or 'w+b').\n\ |
| 1663 | \n\ |
| 1664 | If the value has (or contains an object that has) an unsupported type, a\n\ |
Serhiy Storchaka | 225821c | 2015-12-18 13:05:04 +0200 | [diff] [blame] | 1665 | ValueError exception is raised - but garbage data will also be written\n\ |
R. David Murray | dd226ea | 2009-05-13 12:27:21 +0000 | [diff] [blame] | 1666 | to the file. The object will not be properly read back by load()\n\ |
| 1667 | \n\ |
| 1668 | The version argument indicates the data format that dump should use."); |
| 1669 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1670 | static PyObject * |
Thomas Wouters | 4d70c3d | 2006-06-08 14:42:34 +0000 | [diff] [blame] | 1671 | marshal_load(PyObject *self, PyObject *f) |
Guido van Rossum | dce2e3d | 1991-06-04 19:42:30 +0000 | [diff] [blame] | 1672 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1673 | PyObject *data, *result; |
Martin v. Löwis | bd928fe | 2011-10-14 10:20:37 +0200 | [diff] [blame] | 1674 | _Py_IDENTIFIER(read); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1675 | RFILE rf; |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 1676 | |
| 1677 | /* |
| 1678 | * Make a call to the read method, but read zero bytes. |
| 1679 | * This is to ensure that the object passed in at least |
| 1680 | * has a read method which returns bytes. |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 1681 | * This can be removed if we guarantee good error handling |
| 1682 | * for r_string() |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 1683 | */ |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 1684 | data = _PyObject_CallMethodId(f, &PyId_read, "i", 0); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1685 | if (data == NULL) |
| 1686 | return NULL; |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 1687 | if (!PyBytes_Check(data)) { |
| 1688 | PyErr_Format(PyExc_TypeError, |
| 1689 | "f.read() returned not bytes but %.100s", |
| 1690 | data->ob_type->tp_name); |
| 1691 | result = NULL; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1692 | } |
| 1693 | else { |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 1694 | rf.depth = 0; |
| 1695 | rf.fp = NULL; |
| 1696 | rf.readable = f; |
Vinay Sajip | aac0f75 | 2011-07-02 18:42:21 +0100 | [diff] [blame] | 1697 | rf.current_filename = NULL; |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 1698 | rf.ptr = rf.end = NULL; |
| 1699 | rf.buf = NULL; |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 1700 | if ((rf.refs = PyList_New(0)) != NULL) { |
| 1701 | result = read_object(&rf); |
| 1702 | Py_DECREF(rf.refs); |
Antoine Pitrou | 1164dfc | 2013-10-12 22:25:39 +0200 | [diff] [blame] | 1703 | if (rf.buf != NULL) |
| 1704 | PyMem_FREE(rf.buf); |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 1705 | } else |
| 1706 | result = NULL; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1707 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1708 | Py_DECREF(data); |
| 1709 | return result; |
Guido van Rossum | 0b0db8e | 1993-01-21 16:07:51 +0000 | [diff] [blame] | 1710 | } |
| 1711 | |
R. David Murray | dd226ea | 2009-05-13 12:27:21 +0000 | [diff] [blame] | 1712 | PyDoc_STRVAR(load_doc, |
| 1713 | "load(file)\n\ |
| 1714 | \n\ |
| 1715 | Read one value from the open file and return it. If no valid value is\n\ |
Serhiy Storchaka | 225821c | 2015-12-18 13:05:04 +0200 | [diff] [blame] | 1716 | read (e.g. because the data has a different Python version's\n\ |
R. David Murray | dd226ea | 2009-05-13 12:27:21 +0000 | [diff] [blame] | 1717 | incompatible marshal format), raise EOFError, ValueError or TypeError.\n\ |
| 1718 | The file must be an open file object opened in binary mode ('rb' or\n\ |
| 1719 | 'r+b').\n\ |
| 1720 | \n\ |
| 1721 | Note: If an object containing an unsupported type was marshalled with\n\ |
| 1722 | dump(), load() will substitute None for the unmarshallable type."); |
| 1723 | |
| 1724 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1725 | static PyObject * |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 1726 | marshal_dumps(PyObject *self, PyObject *args) |
Guido van Rossum | 0b0db8e | 1993-01-21 16:07:51 +0000 | [diff] [blame] | 1727 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1728 | PyObject *x; |
| 1729 | int version = Py_MARSHAL_VERSION; |
| 1730 | if (!PyArg_ParseTuple(args, "O|i:dumps", &x, &version)) |
| 1731 | return NULL; |
| 1732 | return PyMarshal_WriteObjectToString(x, version); |
Guido van Rossum | 0b0db8e | 1993-01-21 16:07:51 +0000 | [diff] [blame] | 1733 | } |
| 1734 | |
R. David Murray | dd226ea | 2009-05-13 12:27:21 +0000 | [diff] [blame] | 1735 | PyDoc_STRVAR(dumps_doc, |
| 1736 | "dumps(value[, version])\n\ |
| 1737 | \n\ |
| 1738 | Return the string that would be written to a file by dump(value, file).\n\ |
| 1739 | The value must be a supported type. Raise a ValueError exception if\n\ |
| 1740 | value has (or contains an object that has) an unsupported type.\n\ |
| 1741 | \n\ |
| 1742 | The version argument indicates the data format that dumps should use."); |
| 1743 | |
| 1744 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1745 | static PyObject * |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 1746 | marshal_loads(PyObject *self, PyObject *args) |
Guido van Rossum | 0b0db8e | 1993-01-21 16:07:51 +0000 | [diff] [blame] | 1747 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1748 | RFILE rf; |
| 1749 | Py_buffer p; |
| 1750 | char *s; |
| 1751 | Py_ssize_t n; |
| 1752 | PyObject* result; |
Antoine Pitrou | 4a90ef0 | 2012-03-03 02:35:32 +0100 | [diff] [blame] | 1753 | if (!PyArg_ParseTuple(args, "y*:loads", &p)) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1754 | return NULL; |
| 1755 | s = p.buf; |
| 1756 | n = p.len; |
| 1757 | rf.fp = NULL; |
Vinay Sajip | 5bdae3b | 2011-07-02 16:42:47 +0100 | [diff] [blame] | 1758 | rf.readable = NULL; |
Benjamin Peterson | 43b0686 | 2011-05-27 09:08:01 -0500 | [diff] [blame] | 1759 | rf.current_filename = NULL; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1760 | rf.ptr = s; |
| 1761 | rf.end = s + n; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1762 | rf.depth = 0; |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 1763 | if ((rf.refs = PyList_New(0)) == NULL) |
| 1764 | return NULL; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1765 | result = read_object(&rf); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1766 | PyBuffer_Release(&p); |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 1767 | Py_DECREF(rf.refs); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1768 | return result; |
Guido van Rossum | dce2e3d | 1991-06-04 19:42:30 +0000 | [diff] [blame] | 1769 | } |
| 1770 | |
R. David Murray | dd226ea | 2009-05-13 12:27:21 +0000 | [diff] [blame] | 1771 | PyDoc_STRVAR(loads_doc, |
Antoine Pitrou | 4a90ef0 | 2012-03-03 02:35:32 +0100 | [diff] [blame] | 1772 | "loads(bytes)\n\ |
R. David Murray | dd226ea | 2009-05-13 12:27:21 +0000 | [diff] [blame] | 1773 | \n\ |
Antoine Pitrou | 4a90ef0 | 2012-03-03 02:35:32 +0100 | [diff] [blame] | 1774 | Convert the bytes object to a value. If no valid value is found, raise\n\ |
| 1775 | EOFError, ValueError or TypeError. Extra characters in the input are\n\ |
R. David Murray | dd226ea | 2009-05-13 12:27:21 +0000 | [diff] [blame] | 1776 | ignored."); |
| 1777 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1778 | static PyMethodDef marshal_methods[] = { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1779 | {"dump", marshal_dump, METH_VARARGS, dump_doc}, |
| 1780 | {"load", marshal_load, METH_O, load_doc}, |
| 1781 | {"dumps", marshal_dumps, METH_VARARGS, dumps_doc}, |
| 1782 | {"loads", marshal_loads, METH_VARARGS, loads_doc}, |
| 1783 | {NULL, NULL} /* sentinel */ |
Guido van Rossum | dce2e3d | 1991-06-04 19:42:30 +0000 | [diff] [blame] | 1784 | }; |
| 1785 | |
R. David Murray | dd226ea | 2009-05-13 12:27:21 +0000 | [diff] [blame] | 1786 | |
| 1787 | PyDoc_STRVAR(module_doc, |
| 1788 | "This module contains functions that can read and write Python values in\n\ |
| 1789 | a binary format. The format is specific to Python, but independent of\n\ |
| 1790 | machine architecture issues.\n\ |
| 1791 | \n\ |
| 1792 | Not all Python object types are supported; in general, only objects\n\ |
| 1793 | whose value is independent from a particular invocation of Python can be\n\ |
| 1794 | written and read by this module. The following types are supported:\n\ |
| 1795 | None, integers, floating point numbers, strings, bytes, bytearrays,\n\ |
| 1796 | tuples, lists, sets, dictionaries, and code objects, where it\n\ |
| 1797 | should be understood that tuples, lists and dictionaries are only\n\ |
| 1798 | supported as long as the values contained therein are themselves\n\ |
| 1799 | supported; and recursive lists and dictionaries should not be written\n\ |
| 1800 | (they will cause infinite loops).\n\ |
| 1801 | \n\ |
| 1802 | Variables:\n\ |
| 1803 | \n\ |
| 1804 | version -- indicates the format that the module uses. Version 0 is the\n\ |
| 1805 | historical format, version 1 shares interned strings and version 2\n\ |
| 1806 | uses a binary format for floating point numbers.\n\ |
Kristján Valur Jónsson | d7009c6 | 2013-03-19 18:02:10 -0700 | [diff] [blame] | 1807 | 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] | 1808 | \n\ |
| 1809 | Functions:\n\ |
| 1810 | \n\ |
| 1811 | dump() -- write value to a file\n\ |
| 1812 | load() -- read value from a file\n\ |
| 1813 | dumps() -- write value to a string\n\ |
| 1814 | loads() -- read value from a string"); |
| 1815 | |
| 1816 | |
| 1817 | |
Brett Cannon | 429ef65 | 2008-06-27 00:35:35 +0000 | [diff] [blame] | 1818 | static struct PyModuleDef marshalmodule = { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1819 | PyModuleDef_HEAD_INIT, |
| 1820 | "marshal", |
| 1821 | module_doc, |
| 1822 | 0, |
| 1823 | marshal_methods, |
| 1824 | NULL, |
| 1825 | NULL, |
| 1826 | NULL, |
| 1827 | NULL |
Martin v. Löwis | 1a21451 | 2008-06-11 05:26:20 +0000 | [diff] [blame] | 1828 | }; |
| 1829 | |
Jason Tishler | 6bc06ec | 2003-09-04 11:59:50 +0000 | [diff] [blame] | 1830 | PyMODINIT_FUNC |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 1831 | PyMarshal_Init(void) |
Guido van Rossum | dce2e3d | 1991-06-04 19:42:30 +0000 | [diff] [blame] | 1832 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1833 | PyObject *mod = PyModule_Create(&marshalmodule); |
| 1834 | if (mod == NULL) |
| 1835 | return NULL; |
| 1836 | PyModule_AddIntConstant(mod, "version", Py_MARSHAL_VERSION); |
| 1837 | return mod; |
Guido van Rossum | dce2e3d | 1991-06-04 19:42:30 +0000 | [diff] [blame] | 1838 | } |