… | |
… | |
7 | #include <stdlib.h> |
7 | #include <stdlib.h> |
8 | #include <stdio.h> |
8 | #include <stdio.h> |
9 | #include <limits.h> |
9 | #include <limits.h> |
10 | #include <float.h> |
10 | #include <float.h> |
11 | |
11 | |
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12 | #define ECB_NO_THREADS 1 |
12 | #include "ecb.h" |
13 | #include "ecb.h" |
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14 | |
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15 | // compatibility with perl <5.18 |
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16 | #ifndef HvNAMELEN_get |
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17 | # define HvNAMELEN_get(hv) strlen (HvNAME (hv)) |
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18 | #endif |
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19 | #ifndef HvNAMELEN |
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20 | # define HvNAMELEN(hv) HvNAMELEN_get (hv) |
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21 | #endif |
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22 | #ifndef HvNAMEUTF8 |
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23 | # define HvNAMEUTF8(hv) 0 |
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24 | #endif |
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25 | #ifndef SvREFCNT_dec_NN |
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26 | # define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv) |
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27 | #endif |
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28 | |
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29 | // known major and minor types |
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30 | enum cbor_type |
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31 | { |
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32 | MAJOR_SHIFT = 5, |
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33 | MINOR_MASK = 0x1f, |
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34 | |
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35 | MAJOR_POS_INT = 0 << MAJOR_SHIFT, |
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36 | MAJOR_NEG_INT = 1 << MAJOR_SHIFT, |
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37 | MAJOR_BYTES = 2 << MAJOR_SHIFT, |
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38 | MAJOR_TEXT = 3 << MAJOR_SHIFT, |
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39 | MAJOR_ARRAY = 4 << MAJOR_SHIFT, |
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40 | MAJOR_MAP = 5 << MAJOR_SHIFT, |
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41 | MAJOR_TAG = 6 << MAJOR_SHIFT, |
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42 | MAJOR_MISC = 7 << MAJOR_SHIFT, |
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43 | |
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44 | // INT/STRING/ARRAY/MAP subtypes |
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45 | LENGTH_EXT1 = 24, |
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46 | LENGTH_EXT2 = 25, |
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47 | LENGTH_EXT4 = 26, |
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48 | LENGTH_EXT8 = 27, |
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49 | |
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50 | // SIMPLE types (effectively MISC subtypes) |
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51 | SIMPLE_FALSE = 20, |
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52 | SIMPLE_TRUE = 21, |
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53 | SIMPLE_NULL = 22, |
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54 | SIMPLE_UNDEF = 23, |
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55 | |
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56 | // MISC subtype (unused) |
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57 | MISC_EXT1 = 24, |
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58 | MISC_FLOAT16 = 25, |
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59 | MISC_FLOAT32 = 26, |
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60 | MISC_FLOAT64 = 27, |
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61 | |
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62 | // BYTES/TEXT/ARRAY/MAP |
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63 | MINOR_INDEF = 31, |
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64 | }; |
13 | |
65 | |
14 | // known tags |
66 | // known tags |
15 | enum cbor_tag |
67 | enum cbor_tag |
16 | { |
68 | { |
17 | // inofficial extensions (pending iana registration) |
69 | // extensions |
18 | CBOR_TAG_PERL_OBJECT = 256, |
70 | CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref |
19 | CBOR_TAG_GENERIC_OBJECT = 257, |
71 | CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object |
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72 | CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object |
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73 | CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing |
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74 | CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing |
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75 | CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref |
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76 | CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection |
20 | |
77 | |
21 | // rfc7049 |
78 | // rfc7049 |
22 | CBOR_TAG_DATETIME = 0, // rfc4287, utf-8 |
79 | CBOR_TAG_DATETIME = 0, // rfc4287, utf-8 |
23 | CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any |
80 | CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any |
24 | CBOR_TAG_POS_BIGNUM = 2, // byte string |
81 | CBOR_TAG_POS_BIGNUM = 2, // byte string |
25 | CBOR_TAG_NEG_BIGNUM = 3, // byte string |
82 | CBOR_TAG_NEG_BIGNUM = 3, // byte string |
26 | CBOR_TAG_DECIMAL = 4, // decimal fraction, array |
83 | CBOR_TAG_DECIMAL = 4, // decimal fraction, array |
27 | CBOR_TAG_BIGFLOAT = 5, // array |
84 | CBOR_TAG_BIGFLOAT = 5, // array |
28 | |
85 | |
29 | CBOR_TAG_CONV_B64U = 21, // base64url, any |
86 | CBOR_TAG_CONV_B64U = 21, // base64url, any |
30 | CBOR_TAG_CONV_B64 = 22, // base64, any |
87 | CBOR_TAG_CONV_B64 = 22, // base64, any |
31 | CBOR_TAG_CONV_HEX = 23, // base16, any |
88 | CBOR_TAG_CONV_HEX = 23, // base16, any |
32 | CBOR_TAG_CBOR = 24, // embedded cbor, byte string |
89 | CBOR_TAG_CBOR = 24, // embedded cbor, byte string |
33 | |
90 | |
34 | CBOR_TAG_URI = 32, // URI rfc3986, utf-8 |
91 | CBOR_TAG_URI = 32, // URI rfc3986, utf-8 |
35 | CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8 |
92 | CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8 |
36 | CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8 |
93 | CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8 |
37 | CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8 |
94 | CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8 |
38 | CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8 |
95 | CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8 |
39 | |
96 | |
40 | CBOR_TAG_MAGIC = 55799 // self-describe cbor |
97 | CBOR_TAG_MAGIC = 55799, // self-describe cbor |
41 | }; |
98 | }; |
42 | |
99 | |
43 | #define F_SHRINK 0x00000200UL |
100 | #define F_SHRINK 0x00000001UL |
44 | #define F_ALLOW_UNKNOWN 0x00002000UL |
101 | #define F_ALLOW_UNKNOWN 0x00000002UL |
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102 | #define F_ALLOW_SHARING 0x00000004UL |
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103 | #define F_ALLOW_CYCLES 0x00000008UL |
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104 | #define F_PACK_STRINGS 0x00000010UL |
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105 | #define F_VALIDATE_UTF8 0x00000020UL |
45 | |
106 | |
46 | #define INIT_SIZE 32 // initial scalar size to be allocated |
107 | #define INIT_SIZE 32 // initial scalar size to be allocated |
47 | |
108 | |
48 | #define SB do { |
109 | #define SB do { |
49 | #define SE } while (0) |
110 | #define SE } while (0) |
… | |
… | |
60 | #else |
121 | #else |
61 | # define CBOR_SLOW 0 |
122 | # define CBOR_SLOW 0 |
62 | # define CBOR_STASH cbor_stash |
123 | # define CBOR_STASH cbor_stash |
63 | #endif |
124 | #endif |
64 | |
125 | |
65 | static HV *cbor_stash, *cbor_boolean_stash, *cbor_tagged_stash; // CBOR::XS:: |
126 | static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS:: |
66 | static SV *cbor_true, *cbor_false; |
127 | static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter; |
67 | |
128 | |
68 | typedef struct { |
129 | typedef struct { |
69 | U32 flags; |
130 | U32 flags; |
70 | U32 max_depth; |
131 | U32 max_depth; |
71 | STRLEN max_size; |
132 | STRLEN max_size; |
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133 | SV *filter; |
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134 | |
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135 | // for the incremental parser |
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136 | STRLEN incr_pos; // the current offset into the text |
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137 | STRLEN incr_need; // minimum bytes needed to decode |
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138 | AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef. |
72 | } CBOR; |
139 | } CBOR; |
73 | |
140 | |
74 | ecb_inline void |
141 | ecb_inline void |
75 | cbor_init (CBOR *cbor) |
142 | cbor_init (CBOR *cbor) |
76 | { |
143 | { |
77 | Zero (cbor, 1, CBOR); |
144 | Zero (cbor, 1, CBOR); |
78 | cbor->max_depth = 512; |
145 | cbor->max_depth = 512; |
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146 | } |
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147 | |
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148 | ecb_inline void |
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149 | cbor_free (CBOR *cbor) |
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150 | { |
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151 | SvREFCNT_dec (cbor->filter); |
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152 | SvREFCNT_dec (cbor->incr_count); |
79 | } |
153 | } |
80 | |
154 | |
81 | ///////////////////////////////////////////////////////////////////////////// |
155 | ///////////////////////////////////////////////////////////////////////////// |
82 | // utility functions |
156 | // utility functions |
83 | |
157 | |
… | |
… | |
105 | SvPV_renew (sv, SvCUR (sv) + 1); |
179 | SvPV_renew (sv, SvCUR (sv) + 1); |
106 | #endif |
180 | #endif |
107 | } |
181 | } |
108 | } |
182 | } |
109 | |
183 | |
110 | ///////////////////////////////////////////////////////////////////////////// |
184 | // minimum length of a string to be registered for stringref |
111 | // fp hell |
185 | ecb_inline int |
112 | |
186 | minimum_string_length (UV idx) |
113 | //TODO |
187 | { |
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188 | return idx > 23 |
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189 | ? idx > 0xffU |
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190 | ? idx > 0xffffU |
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191 | ? idx > 0xffffffffU |
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192 | ? 11 |
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193 | : 7 |
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194 | : 5 |
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195 | : 4 |
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196 | : 3; |
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197 | } |
114 | |
198 | |
115 | ///////////////////////////////////////////////////////////////////////////// |
199 | ///////////////////////////////////////////////////////////////////////////// |
116 | // encoder |
200 | // encoder |
117 | |
201 | |
118 | // structure used for encoding CBOR |
202 | // structure used for encoding CBOR |
… | |
… | |
121 | char *cur; // SvPVX (sv) + current output position |
205 | char *cur; // SvPVX (sv) + current output position |
122 | char *end; // SvEND (sv) |
206 | char *end; // SvEND (sv) |
123 | SV *sv; // result scalar |
207 | SV *sv; // result scalar |
124 | CBOR cbor; |
208 | CBOR cbor; |
125 | U32 depth; // recursion level |
209 | U32 depth; // recursion level |
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210 | HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8) |
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211 | UV stringref_idx; |
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212 | HV *shareable; // ptr => index, or 0 |
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213 | UV shareable_idx; |
126 | } enc_t; |
214 | } enc_t; |
127 | |
215 | |
128 | ecb_inline void |
216 | ecb_inline void |
129 | need (enc_t *enc, STRLEN len) |
217 | need (enc_t *enc, STRLEN len) |
130 | { |
218 | { |
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147 | static void |
235 | static void |
148 | encode_uint (enc_t *enc, int major, UV len) |
236 | encode_uint (enc_t *enc, int major, UV len) |
149 | { |
237 | { |
150 | need (enc, 9); |
238 | need (enc, 9); |
151 | |
239 | |
152 | if (len < 24) |
240 | if (ecb_expect_true (len < LENGTH_EXT1)) |
153 | *enc->cur++ = major | len; |
241 | *enc->cur++ = major | len; |
154 | else if (len <= 0xff) |
242 | else if (ecb_expect_true (len <= 0xffU)) |
155 | { |
243 | { |
156 | *enc->cur++ = major | 24; |
244 | *enc->cur++ = major | LENGTH_EXT1; |
157 | *enc->cur++ = len; |
245 | *enc->cur++ = len; |
158 | } |
246 | } |
159 | else if (len <= 0xffff) |
247 | else if (len <= 0xffffU) |
160 | { |
248 | { |
161 | *enc->cur++ = major | 25; |
249 | *enc->cur++ = major | LENGTH_EXT2; |
162 | *enc->cur++ = len >> 8; |
250 | *enc->cur++ = len >> 8; |
163 | *enc->cur++ = len; |
251 | *enc->cur++ = len; |
164 | } |
252 | } |
165 | else if (len <= 0xffffffff) |
253 | else if (len <= 0xffffffffU) |
166 | { |
254 | { |
167 | *enc->cur++ = major | 26; |
255 | *enc->cur++ = major | LENGTH_EXT4; |
168 | *enc->cur++ = len >> 24; |
256 | *enc->cur++ = len >> 24; |
169 | *enc->cur++ = len >> 16; |
257 | *enc->cur++ = len >> 16; |
170 | *enc->cur++ = len >> 8; |
258 | *enc->cur++ = len >> 8; |
171 | *enc->cur++ = len; |
259 | *enc->cur++ = len; |
172 | } |
260 | } |
173 | else |
261 | else |
174 | { |
262 | { |
175 | *enc->cur++ = major | 27; |
263 | *enc->cur++ = major | LENGTH_EXT8; |
176 | *enc->cur++ = len >> 56; |
264 | *enc->cur++ = len >> 56; |
177 | *enc->cur++ = len >> 48; |
265 | *enc->cur++ = len >> 48; |
178 | *enc->cur++ = len >> 40; |
266 | *enc->cur++ = len >> 40; |
179 | *enc->cur++ = len >> 32; |
267 | *enc->cur++ = len >> 32; |
180 | *enc->cur++ = len >> 24; |
268 | *enc->cur++ = len >> 24; |
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182 | *enc->cur++ = len >> 8; |
270 | *enc->cur++ = len >> 8; |
183 | *enc->cur++ = len; |
271 | *enc->cur++ = len; |
184 | } |
272 | } |
185 | } |
273 | } |
186 | |
274 | |
187 | static void |
275 | ecb_inline void |
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276 | encode_tag (enc_t *enc, UV tag) |
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277 | { |
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278 | encode_uint (enc, MAJOR_TAG, tag); |
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279 | } |
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280 | |
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281 | ecb_inline void |
188 | encode_str (enc_t *enc, int utf8, char *str, STRLEN len) |
282 | encode_str (enc_t *enc, int utf8, char *str, STRLEN len) |
189 | { |
283 | { |
190 | encode_uint (enc, utf8 ? 0x60 : 0x40, len); |
284 | encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len); |
191 | need (enc, len); |
285 | need (enc, len); |
192 | memcpy (enc->cur, str, len); |
286 | memcpy (enc->cur, str, len); |
193 | enc->cur += len; |
287 | enc->cur += len; |
194 | } |
288 | } |
195 | |
289 | |
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290 | static void |
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291 | encode_strref (enc_t *enc, int utf8, char *str, STRLEN len) |
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292 | { |
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293 | if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS)) |
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294 | { |
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295 | SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1); |
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296 | |
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297 | if (SvOK (*svp)) |
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298 | { |
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299 | // already registered, use stringref |
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300 | encode_tag (enc, CBOR_TAG_STRINGREF); |
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301 | encode_uint (enc, MAJOR_POS_INT, SvUV (*svp)); |
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302 | return; |
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303 | } |
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304 | else if (len >= minimum_string_length (enc->stringref_idx)) |
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305 | { |
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306 | // register only |
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307 | sv_setuv (*svp, enc->stringref_idx); |
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308 | ++enc->stringref_idx; |
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309 | } |
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310 | } |
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311 | |
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312 | encode_str (enc, utf8, str, len); |
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313 | } |
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314 | |
196 | static void encode_sv (enc_t *enc, SV *sv); |
315 | static void encode_sv (enc_t *enc, SV *sv); |
197 | |
316 | |
198 | static void |
317 | static void |
199 | encode_av (enc_t *enc, AV *av) |
318 | encode_av (enc_t *enc, AV *av) |
200 | { |
319 | { |
… | |
… | |
203 | if (enc->depth >= enc->cbor.max_depth) |
322 | if (enc->depth >= enc->cbor.max_depth) |
204 | croak (ERR_NESTING_EXCEEDED); |
323 | croak (ERR_NESTING_EXCEEDED); |
205 | |
324 | |
206 | ++enc->depth; |
325 | ++enc->depth; |
207 | |
326 | |
208 | encode_uint (enc, 0x80, len + 1); |
327 | encode_uint (enc, MAJOR_ARRAY, len + 1); |
209 | |
328 | |
210 | for (i = 0; i <= len; ++i) |
329 | for (i = 0; i <= len; ++i) |
211 | { |
330 | { |
212 | SV **svp = av_fetch (av, i, 0); |
331 | SV **svp = av_fetch (av, i, 0); |
213 | encode_sv (enc, svp ? *svp : &PL_sv_undef); |
332 | encode_sv (enc, svp ? *svp : &PL_sv_undef); |
… | |
… | |
228 | |
347 | |
229 | int pairs = hv_iterinit (hv); |
348 | int pairs = hv_iterinit (hv); |
230 | int mg = SvMAGICAL (hv); |
349 | int mg = SvMAGICAL (hv); |
231 | |
350 | |
232 | if (mg) |
351 | if (mg) |
233 | encode_ch (enc, 0xa0 | 31); |
352 | encode_ch (enc, MAJOR_MAP | MINOR_INDEF); |
234 | else |
353 | else |
235 | encode_uint (enc, 0xa0, pairs); |
354 | encode_uint (enc, MAJOR_MAP, pairs); |
236 | |
355 | |
237 | while ((he = hv_iternext (hv))) |
356 | while ((he = hv_iternext (hv))) |
238 | { |
357 | { |
239 | if (HeKLEN (he) == HEf_SVKEY) |
358 | if (HeKLEN (he) == HEf_SVKEY) |
240 | encode_sv (enc, HeSVKEY (he)); |
359 | encode_sv (enc, HeSVKEY (he)); |
241 | else |
360 | else |
242 | encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he)); |
361 | encode_strref (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he)); |
243 | |
362 | |
244 | encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he)); |
363 | encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he)); |
245 | } |
364 | } |
246 | |
365 | |
247 | if (mg) |
366 | if (mg) |
248 | encode_ch (enc, 0xe0 | 31); |
367 | encode_ch (enc, MAJOR_MISC | MINOR_INDEF); |
249 | |
368 | |
250 | --enc->depth; |
369 | --enc->depth; |
251 | } |
370 | } |
252 | |
371 | |
253 | // encode objects, arrays and special \0=false and \1=true values. |
372 | // encode objects, arrays and special \0=false and \1=true values. |
254 | static void |
373 | static void |
255 | encode_rv (enc_t *enc, SV *sv) |
374 | encode_rv (enc_t *enc, SV *sv) |
256 | { |
375 | { |
257 | svtype svt; |
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258 | |
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259 | SvGETMAGIC (sv); |
376 | SvGETMAGIC (sv); |
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377 | |
260 | svt = SvTYPE (sv); |
378 | svtype svt = SvTYPE (sv); |
261 | |
379 | |
262 | if (ecb_expect_false (SvOBJECT (sv))) |
380 | if (ecb_expect_false (SvOBJECT (sv))) |
263 | { |
381 | { |
264 | HV *boolean_stash = !CBOR_SLOW || cbor_boolean_stash |
382 | HV *boolean_stash = !CBOR_SLOW || types_boolean_stash |
265 | ? cbor_boolean_stash |
383 | ? types_boolean_stash |
266 | : gv_stashpv ("CBOR::XS::Boolean", 1); |
384 | : gv_stashpv ("Types::Serialiser::Boolean", 1); |
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385 | HV *error_stash = !CBOR_SLOW || types_error_stash |
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386 | ? types_error_stash |
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387 | : gv_stashpv ("Types::Serialiser::Error", 1); |
267 | HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash |
388 | HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash |
268 | ? cbor_tagged_stash |
389 | ? cbor_tagged_stash |
269 | : gv_stashpv ("CBOR::XS::Tagged" , 1); |
390 | : gv_stashpv ("CBOR::XS::Tagged" , 1); |
270 | |
391 | |
|
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392 | HV *stash = SvSTASH (sv); |
|
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393 | |
271 | if (SvSTASH (sv) == boolean_stash) |
394 | if (stash == boolean_stash) |
272 | encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20); |
395 | { |
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396 | encode_ch (enc, SvIV (sv) ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE); |
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397 | return; |
|
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398 | } |
|
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399 | else if (stash == error_stash) |
|
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400 | { |
|
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401 | encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF); |
|
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402 | return; |
|
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403 | } |
273 | else if (SvSTASH (sv) == tagged_stash) |
404 | else if (stash == tagged_stash) |
274 | { |
405 | { |
275 | if (svt != SVt_PVAV) |
406 | if (svt != SVt_PVAV) |
276 | croak ("encountered CBOR::XS::Tagged object that isn't an array"); |
407 | croak ("encountered CBOR::XS::Tagged object that isn't an array"); |
277 | |
408 | |
278 | encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1))); |
409 | encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1))); |
279 | encode_sv (enc, *av_fetch ((AV *)sv, 1, 1)); |
410 | encode_sv (enc, *av_fetch ((AV *)sv, 1, 1)); |
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411 | |
|
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412 | return; |
|
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413 | } |
|
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414 | } |
|
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415 | |
|
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416 | if (ecb_expect_false (SvREFCNT (sv) > 1) |
|
|
417 | && ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING)) |
|
|
418 | { |
|
|
419 | if (!enc->shareable) |
|
|
420 | enc->shareable = (HV *)sv_2mortal ((SV *)newHV ()); |
|
|
421 | |
|
|
422 | SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1); |
|
|
423 | |
|
|
424 | if (SvOK (*svp)) |
|
|
425 | { |
|
|
426 | encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF); |
|
|
427 | encode_uint (enc, MAJOR_POS_INT, SvUV (*svp)); |
|
|
428 | return; |
280 | } |
429 | } |
281 | else |
430 | else |
282 | { |
431 | { |
|
|
432 | sv_setuv (*svp, enc->shareable_idx); |
|
|
433 | ++enc->shareable_idx; |
|
|
434 | encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE); |
|
|
435 | } |
|
|
436 | } |
|
|
437 | |
|
|
438 | if (ecb_expect_false (SvOBJECT (sv))) |
|
|
439 | { |
|
|
440 | HV *stash = SvSTASH (sv); |
|
|
441 | GV *method; |
|
|
442 | |
|
|
443 | if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0))) |
|
|
444 | { |
|
|
445 | dSP; |
|
|
446 | |
|
|
447 | ENTER; SAVETMPS; PUSHMARK (SP); |
283 | // we re-bless the reference to get overload and other niceties right |
448 | // we re-bless the reference to get overload and other niceties right |
284 | GV *to_cbor = gv_fetchmethod_autoload (SvSTASH (sv), "TO_CBOR", 0); |
|
|
285 | |
|
|
286 | if (to_cbor) |
|
|
287 | { |
|
|
288 | dSP; |
|
|
289 | |
|
|
290 | ENTER; SAVETMPS; PUSHMARK (SP); |
|
|
291 | XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv))); |
449 | XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash)); |
292 | |
450 | |
293 | // calling with G_SCALAR ensures that we always get a 1 return value |
|
|
294 | PUTBACK; |
451 | PUTBACK; |
|
|
452 | // G_SCALAR ensures that return value is 1 |
295 | call_sv ((SV *)GvCV (to_cbor), G_SCALAR); |
453 | call_sv ((SV *)GvCV (method), G_SCALAR); |
296 | SPAGAIN; |
454 | SPAGAIN; |
297 | |
455 | |
298 | // catch this surprisingly common error |
456 | // catch this surprisingly common error |
299 | if (SvROK (TOPs) && SvRV (TOPs) == sv) |
457 | if (SvROK (TOPs) && SvRV (TOPs) == sv) |
300 | croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv))); |
458 | croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash)); |
301 | |
459 | |
302 | sv = POPs; |
460 | encode_sv (enc, POPs); |
|
|
461 | |
303 | PUTBACK; |
462 | PUTBACK; |
304 | |
463 | |
305 | encode_sv (enc, sv); |
|
|
306 | |
|
|
307 | FREETMPS; LEAVE; |
464 | FREETMPS; LEAVE; |
308 | } |
465 | } |
|
|
466 | else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0) |
|
|
467 | { |
|
|
468 | dSP; |
|
|
469 | |
|
|
470 | ENTER; SAVETMPS; PUSHMARK (SP); |
|
|
471 | EXTEND (SP, 2); |
|
|
472 | // we re-bless the reference to get overload and other niceties right |
|
|
473 | PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash)); |
|
|
474 | PUSHs (sv_cbor); |
|
|
475 | |
|
|
476 | PUTBACK; |
|
|
477 | int count = call_sv ((SV *)GvCV (method), G_ARRAY); |
|
|
478 | SPAGAIN; |
|
|
479 | |
|
|
480 | // catch this surprisingly common error |
|
|
481 | if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv) |
|
|
482 | croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash)); |
|
|
483 | |
|
|
484 | encode_tag (enc, CBOR_TAG_PERL_OBJECT); |
|
|
485 | encode_uint (enc, MAJOR_ARRAY, count + 1); |
|
|
486 | encode_strref (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash)); |
|
|
487 | |
|
|
488 | while (count) |
|
|
489 | encode_sv (enc, SP[1 - count--]); |
|
|
490 | |
|
|
491 | PUTBACK; |
|
|
492 | |
|
|
493 | FREETMPS; LEAVE; |
|
|
494 | } |
309 | else |
495 | else |
310 | croak ("encountered object '%s', but no TO_CBOR method available on it", |
496 | croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it", |
311 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
497 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
312 | } |
|
|
313 | } |
498 | } |
314 | else if (svt == SVt_PVHV) |
499 | else if (svt == SVt_PVHV) |
315 | encode_hv (enc, (HV *)sv); |
500 | encode_hv (enc, (HV *)sv); |
316 | else if (svt == SVt_PVAV) |
501 | else if (svt == SVt_PVAV) |
317 | encode_av (enc, (AV *)sv); |
502 | encode_av (enc, (AV *)sv); |
318 | else if (svt < SVt_PVAV) |
|
|
319 | { |
|
|
320 | STRLEN len = 0; |
|
|
321 | char *pv = svt ? SvPV (sv, len) : 0; |
|
|
322 | |
|
|
323 | if (len == 1 && *pv == '1') |
|
|
324 | encode_ch (enc, 0xe0 | 21); |
|
|
325 | else if (len == 1 && *pv == '0') |
|
|
326 | encode_ch (enc, 0xe0 | 20); |
|
|
327 | else if (enc->cbor.flags & F_ALLOW_UNKNOWN) |
|
|
328 | encode_ch (enc, 0xe0 | 23); |
|
|
329 | else |
|
|
330 | croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1", |
|
|
331 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
|
|
332 | } |
|
|
333 | else if (enc->cbor.flags & F_ALLOW_UNKNOWN) |
|
|
334 | encode_ch (enc, 0xe0 | 23); |
|
|
335 | else |
503 | else |
336 | croak ("encountered %s, but CBOR can only represent references to arrays or hashes", |
504 | { |
337 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
505 | encode_tag (enc, CBOR_TAG_INDIRECTION); |
|
|
506 | encode_sv (enc, sv); |
|
|
507 | } |
338 | } |
508 | } |
339 | |
509 | |
340 | static void |
510 | static void |
341 | encode_nv (enc_t *enc, SV *sv) |
511 | encode_nv (enc_t *enc, SV *sv) |
342 | { |
512 | { |
343 | double nv = SvNVX (sv); |
513 | double nv = SvNVX (sv); |
344 | |
514 | |
345 | need (enc, 9); |
515 | need (enc, 9); |
346 | |
516 | |
347 | if (ecb_expect_false (nv == (U32)nv)) |
517 | if (ecb_expect_false (nv == (NV)(U32)nv)) |
348 | encode_uint (enc, 0x00, (U32)nv); |
518 | encode_uint (enc, MAJOR_POS_INT, (U32)nv); |
349 | //TODO: maybe I32? |
519 | //TODO: maybe I32? |
350 | else if (ecb_expect_false (nv == (float)nv)) |
520 | else if (ecb_expect_false (nv == (float)nv)) |
351 | { |
521 | { |
352 | uint32_t fp = ecb_float_to_binary32 (nv); |
522 | uint32_t fp = ecb_float_to_binary32 (nv); |
353 | |
523 | |
354 | *enc->cur++ = 0xe0 | 26; |
524 | *enc->cur++ = MAJOR_MISC | MISC_FLOAT32; |
355 | |
525 | |
356 | if (!ecb_big_endian ()) |
526 | if (!ecb_big_endian ()) |
357 | fp = ecb_bswap32 (fp); |
527 | fp = ecb_bswap32 (fp); |
358 | |
528 | |
359 | memcpy (enc->cur, &fp, 4); |
529 | memcpy (enc->cur, &fp, 4); |
… | |
… | |
361 | } |
531 | } |
362 | else |
532 | else |
363 | { |
533 | { |
364 | uint64_t fp = ecb_double_to_binary64 (nv); |
534 | uint64_t fp = ecb_double_to_binary64 (nv); |
365 | |
535 | |
366 | *enc->cur++ = 0xe0 | 27; |
536 | *enc->cur++ = MAJOR_MISC | MISC_FLOAT64; |
367 | |
537 | |
368 | if (!ecb_big_endian ()) |
538 | if (!ecb_big_endian ()) |
369 | fp = ecb_bswap64 (fp); |
539 | fp = ecb_bswap64 (fp); |
370 | |
540 | |
371 | memcpy (enc->cur, &fp, 8); |
541 | memcpy (enc->cur, &fp, 8); |
… | |
… | |
380 | |
550 | |
381 | if (SvPOKp (sv)) |
551 | if (SvPOKp (sv)) |
382 | { |
552 | { |
383 | STRLEN len; |
553 | STRLEN len; |
384 | char *str = SvPV (sv, len); |
554 | char *str = SvPV (sv, len); |
385 | encode_str (enc, SvUTF8 (sv), str, len); |
555 | encode_strref (enc, SvUTF8 (sv), str, len); |
386 | } |
556 | } |
387 | else if (SvNOKp (sv)) |
557 | else if (SvNOKp (sv)) |
388 | encode_nv (enc, sv); |
558 | encode_nv (enc, sv); |
389 | else if (SvIOKp (sv)) |
559 | else if (SvIOKp (sv)) |
390 | { |
560 | { |
391 | if (SvIsUV (sv)) |
561 | if (SvIsUV (sv)) |
392 | encode_uint (enc, 0x00, SvUVX (sv)); |
562 | encode_uint (enc, MAJOR_POS_INT, SvUVX (sv)); |
393 | else if (SvIVX (sv) >= 0) |
563 | else if (SvIVX (sv) >= 0) |
394 | encode_uint (enc, 0x00, SvIVX (sv)); |
564 | encode_uint (enc, MAJOR_POS_INT, SvIVX (sv)); |
395 | else |
565 | else |
396 | encode_uint (enc, 0x20, -(SvIVX (sv) + 1)); |
566 | encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1)); |
397 | } |
567 | } |
398 | else if (SvROK (sv)) |
568 | else if (SvROK (sv)) |
399 | encode_rv (enc, SvRV (sv)); |
569 | encode_rv (enc, SvRV (sv)); |
400 | else if (!SvOK (sv)) |
570 | else if (!SvOK (sv)) |
401 | encode_ch (enc, 0xe0 | 22); |
571 | encode_ch (enc, MAJOR_MISC | SIMPLE_NULL); |
402 | else if (enc->cbor.flags & F_ALLOW_UNKNOWN) |
572 | else if (enc->cbor.flags & F_ALLOW_UNKNOWN) |
403 | encode_ch (enc, 0xe0 | 23); |
573 | encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF); |
404 | else |
574 | else |
405 | croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data", |
575 | croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data", |
406 | SvPV_nolen (sv), (unsigned int)SvFLAGS (sv)); |
576 | SvPV_nolen (sv), (unsigned int)SvFLAGS (sv)); |
407 | } |
577 | } |
408 | |
578 | |
409 | static SV * |
579 | static SV * |
410 | encode_cbor (SV *scalar, CBOR *cbor) |
580 | encode_cbor (SV *scalar, CBOR *cbor) |
411 | { |
581 | { |
412 | enc_t enc; |
582 | enc_t enc = { }; |
413 | |
583 | |
414 | enc.cbor = *cbor; |
584 | enc.cbor = *cbor; |
415 | enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE)); |
585 | enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE)); |
416 | enc.cur = SvPVX (enc.sv); |
586 | enc.cur = SvPVX (enc.sv); |
417 | enc.end = SvEND (enc.sv); |
587 | enc.end = SvEND (enc.sv); |
418 | enc.depth = 0; |
|
|
419 | |
588 | |
420 | SvPOK_only (enc.sv); |
589 | SvPOK_only (enc.sv); |
|
|
590 | |
|
|
591 | if (cbor->flags & F_PACK_STRINGS) |
|
|
592 | { |
|
|
593 | encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE); |
|
|
594 | enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ()); |
|
|
595 | enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ()); |
|
|
596 | } |
|
|
597 | |
421 | encode_sv (&enc, scalar); |
598 | encode_sv (&enc, scalar); |
422 | |
599 | |
423 | SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv)); |
600 | SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv)); |
424 | *SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings |
601 | *SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings |
425 | |
602 | |
… | |
… | |
439 | U8 *end; // end of input string |
616 | U8 *end; // end of input string |
440 | const char *err; // parse error, if != 0 |
617 | const char *err; // parse error, if != 0 |
441 | CBOR cbor; |
618 | CBOR cbor; |
442 | U32 depth; // recursion depth |
619 | U32 depth; // recursion depth |
443 | U32 maxdepth; // recursion depth limit |
620 | U32 maxdepth; // recursion depth limit |
|
|
621 | AV *shareable; |
|
|
622 | AV *stringref; |
|
|
623 | SV *decode_tagged; |
444 | } dec_t; |
624 | } dec_t; |
445 | |
625 | |
446 | #define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE |
626 | #define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE |
447 | |
627 | |
448 | #define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data") |
628 | #define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data") |
… | |
… | |
451 | #define DEC_DEC_DEPTH --dec->depth |
631 | #define DEC_DEC_DEPTH --dec->depth |
452 | |
632 | |
453 | static UV |
633 | static UV |
454 | decode_uint (dec_t *dec) |
634 | decode_uint (dec_t *dec) |
455 | { |
635 | { |
456 | switch (*dec->cur & 31) |
636 | U8 m = *dec->cur & MINOR_MASK; |
457 | { |
637 | ++dec->cur; |
458 | case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7: |
|
|
459 | case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15: |
|
|
460 | case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23: |
|
|
461 | return *dec->cur++ & 31; |
|
|
462 | |
638 | |
463 | case 24: |
639 | if (ecb_expect_true (m < LENGTH_EXT1)) |
|
|
640 | return m; |
|
|
641 | else if (ecb_expect_true (m == LENGTH_EXT1)) |
|
|
642 | { |
464 | WANT (2); |
643 | WANT (1); |
465 | dec->cur += 2; |
644 | dec->cur += 1; |
466 | return dec->cur[-1]; |
645 | return dec->cur[-1]; |
467 | |
646 | } |
468 | case 25: |
647 | else if (ecb_expect_true (m == LENGTH_EXT2)) |
|
|
648 | { |
469 | WANT (3); |
649 | WANT (2); |
470 | dec->cur += 3; |
650 | dec->cur += 2; |
471 | return (((UV)dec->cur[-2]) << 8) |
651 | return (((UV)dec->cur[-2]) << 8) |
472 | | ((UV)dec->cur[-1]); |
652 | | ((UV)dec->cur[-1]); |
473 | |
653 | } |
474 | case 26: |
654 | else if (ecb_expect_true (m == LENGTH_EXT4)) |
|
|
655 | { |
475 | WANT (5); |
656 | WANT (4); |
476 | dec->cur += 5; |
657 | dec->cur += 4; |
477 | return (((UV)dec->cur[-4]) << 24) |
658 | return (((UV)dec->cur[-4]) << 24) |
478 | | (((UV)dec->cur[-3]) << 16) |
659 | | (((UV)dec->cur[-3]) << 16) |
479 | | (((UV)dec->cur[-2]) << 8) |
660 | | (((UV)dec->cur[-2]) << 8) |
480 | | ((UV)dec->cur[-1]); |
661 | | ((UV)dec->cur[-1]); |
481 | |
662 | } |
482 | case 27: |
663 | else if (ecb_expect_true (m == LENGTH_EXT8)) |
|
|
664 | { |
483 | WANT (9); |
665 | WANT (8); |
484 | dec->cur += 9; |
666 | dec->cur += 8; |
|
|
667 | |
|
|
668 | return |
|
|
669 | #if UVSIZE < 8 |
|
|
670 | 0 |
|
|
671 | #else |
485 | return (((UV)dec->cur[-8]) << 56) |
672 | (((UV)dec->cur[-8]) << 56) |
486 | | (((UV)dec->cur[-7]) << 48) |
673 | | (((UV)dec->cur[-7]) << 48) |
487 | | (((UV)dec->cur[-6]) << 40) |
674 | | (((UV)dec->cur[-6]) << 40) |
488 | | (((UV)dec->cur[-5]) << 32) |
675 | | (((UV)dec->cur[-5]) << 32) |
|
|
676 | #endif |
489 | | (((UV)dec->cur[-4]) << 24) |
677 | | (((UV)dec->cur[-4]) << 24) |
490 | | (((UV)dec->cur[-3]) << 16) |
678 | | (((UV)dec->cur[-3]) << 16) |
491 | | (((UV)dec->cur[-2]) << 8) |
679 | | (((UV)dec->cur[-2]) << 8) |
492 | | ((UV)dec->cur[-1]); |
680 | | ((UV)dec->cur[-1]); |
493 | |
681 | } |
494 | default: |
682 | else |
495 | ERR ("corrupted CBOR data (unsupported integer minor encoding)"); |
683 | ERR ("corrupted CBOR data (unsupported integer minor encoding)"); |
496 | } |
|
|
497 | |
684 | |
498 | fail: |
685 | fail: |
499 | return 0; |
686 | return 0; |
500 | } |
687 | } |
501 | |
688 | |
… | |
… | |
506 | { |
693 | { |
507 | AV *av = newAV (); |
694 | AV *av = newAV (); |
508 | |
695 | |
509 | DEC_INC_DEPTH; |
696 | DEC_INC_DEPTH; |
510 | |
697 | |
511 | if ((*dec->cur & 31) == 31) |
698 | if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF)) |
512 | { |
699 | { |
513 | ++dec->cur; |
700 | ++dec->cur; |
514 | |
701 | |
515 | for (;;) |
702 | for (;;) |
516 | { |
703 | { |
517 | WANT (1); |
704 | WANT (1); |
518 | |
705 | |
519 | if (*dec->cur == (0xe0 | 31)) |
706 | if (*dec->cur == (MAJOR_MISC | MINOR_INDEF)) |
520 | { |
707 | { |
521 | ++dec->cur; |
708 | ++dec->cur; |
522 | break; |
709 | break; |
523 | } |
710 | } |
524 | |
711 | |
… | |
… | |
527 | } |
714 | } |
528 | else |
715 | else |
529 | { |
716 | { |
530 | int i, len = decode_uint (dec); |
717 | int i, len = decode_uint (dec); |
531 | |
718 | |
|
|
719 | WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays |
532 | av_fill (av, len - 1); |
720 | av_fill (av, len - 1); |
533 | |
721 | |
534 | for (i = 0; i < len; ++i) |
722 | for (i = 0; i < len; ++i) |
535 | AvARRAY (av)[i] = decode_sv (dec); |
723 | AvARRAY (av)[i] = decode_sv (dec); |
536 | } |
724 | } |
… | |
… | |
542 | SvREFCNT_dec (av); |
730 | SvREFCNT_dec (av); |
543 | DEC_DEC_DEPTH; |
731 | DEC_DEC_DEPTH; |
544 | return &PL_sv_undef; |
732 | return &PL_sv_undef; |
545 | } |
733 | } |
546 | |
734 | |
|
|
735 | static void |
|
|
736 | decode_he (dec_t *dec, HV *hv) |
|
|
737 | { |
|
|
738 | // for speed reasons, we specialcase single-string |
|
|
739 | // byte or utf-8 strings as keys, but only when !stringref |
|
|
740 | |
|
|
741 | if (ecb_expect_true (!dec->stringref)) |
|
|
742 | if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8)) |
|
|
743 | { |
|
|
744 | I32 len = decode_uint (dec); |
|
|
745 | char *key = (char *)dec->cur; |
|
|
746 | |
|
|
747 | dec->cur += len; |
|
|
748 | |
|
|
749 | hv_store (hv, key, len, decode_sv (dec), 0); |
|
|
750 | |
|
|
751 | return; |
|
|
752 | } |
|
|
753 | else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8)) |
|
|
754 | { |
|
|
755 | I32 len = decode_uint (dec); |
|
|
756 | char *key = (char *)dec->cur; |
|
|
757 | |
|
|
758 | dec->cur += len; |
|
|
759 | |
|
|
760 | if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8)) |
|
|
761 | if (!is_utf8_string (key, len)) |
|
|
762 | ERR ("corrupted CBOR data (invalid UTF-8 in map key)"); |
|
|
763 | |
|
|
764 | hv_store (hv, key, -len, decode_sv (dec), 0); |
|
|
765 | |
|
|
766 | return; |
|
|
767 | } |
|
|
768 | |
|
|
769 | SV *k = decode_sv (dec); |
|
|
770 | SV *v = decode_sv (dec); |
|
|
771 | |
|
|
772 | hv_store_ent (hv, k, v, 0); |
|
|
773 | SvREFCNT_dec (k); |
|
|
774 | |
|
|
775 | fail: |
|
|
776 | ; |
|
|
777 | } |
|
|
778 | |
547 | static SV * |
779 | static SV * |
548 | decode_hv (dec_t *dec) |
780 | decode_hv (dec_t *dec) |
549 | { |
781 | { |
550 | HV *hv = newHV (); |
782 | HV *hv = newHV (); |
551 | |
783 | |
552 | DEC_INC_DEPTH; |
784 | DEC_INC_DEPTH; |
553 | |
785 | |
554 | if ((*dec->cur & 31) == 31) |
786 | if (*dec->cur == (MAJOR_MAP | MINOR_INDEF)) |
555 | { |
787 | { |
556 | ++dec->cur; |
788 | ++dec->cur; |
557 | |
789 | |
558 | for (;;) |
790 | for (;;) |
559 | { |
791 | { |
560 | WANT (1); |
792 | WANT (1); |
561 | |
793 | |
562 | if (*dec->cur == (0xe0 | 31)) |
794 | if (*dec->cur == (MAJOR_MISC | MINOR_INDEF)) |
563 | { |
795 | { |
564 | ++dec->cur; |
796 | ++dec->cur; |
565 | break; |
797 | break; |
566 | } |
798 | } |
567 | |
799 | |
568 | SV *k = decode_sv (dec); |
800 | decode_he (dec, hv); |
569 | SV *v = decode_sv (dec); |
|
|
570 | |
|
|
571 | hv_store_ent (hv, k, v, 0); |
|
|
572 | } |
801 | } |
573 | } |
802 | } |
574 | else |
803 | else |
575 | { |
804 | { |
576 | int len = decode_uint (dec); |
805 | int pairs = decode_uint (dec); |
577 | |
806 | |
578 | while (len--) |
807 | while (pairs--) |
579 | { |
808 | decode_he (dec, hv); |
580 | SV *k = decode_sv (dec); |
|
|
581 | SV *v = decode_sv (dec); |
|
|
582 | |
|
|
583 | hv_store_ent (hv, k, v, 0); |
|
|
584 | } |
|
|
585 | } |
809 | } |
586 | |
810 | |
587 | DEC_DEC_DEPTH; |
811 | DEC_DEC_DEPTH; |
588 | return newRV_noinc ((SV *)hv); |
812 | return newRV_noinc ((SV *)hv); |
589 | |
813 | |
… | |
… | |
596 | static SV * |
820 | static SV * |
597 | decode_str (dec_t *dec, int utf8) |
821 | decode_str (dec_t *dec, int utf8) |
598 | { |
822 | { |
599 | SV *sv = 0; |
823 | SV *sv = 0; |
600 | |
824 | |
601 | if ((*dec->cur & 31) == 31) |
825 | if ((*dec->cur & MINOR_MASK) == MINOR_INDEF) |
602 | { |
826 | { |
|
|
827 | // indefinite length strings |
603 | ++dec->cur; |
828 | ++dec->cur; |
604 | |
829 | |
|
|
830 | U8 major = *dec->cur & MAJOR_MISC; |
|
|
831 | |
605 | sv = newSVpvn ("", 0); |
832 | sv = newSVpvn ("", 0); |
606 | |
833 | |
607 | // not very fast, and certainly not robust against illegal input |
|
|
608 | for (;;) |
834 | for (;;) |
609 | { |
835 | { |
610 | WANT (1); |
836 | WANT (1); |
611 | |
837 | |
612 | if (*dec->cur == (0xe0 | 31)) |
838 | if ((*dec->cur - major) > LENGTH_EXT8) |
|
|
839 | if (*dec->cur == (MAJOR_MISC | MINOR_INDEF)) |
613 | { |
840 | { |
614 | ++dec->cur; |
841 | ++dec->cur; |
615 | break; |
842 | break; |
616 | } |
843 | } |
|
|
844 | else |
|
|
845 | ERR ("corrupted CBOR data (invalid chunks in indefinite length string)"); |
617 | |
846 | |
618 | sv_catsv (sv, decode_sv (dec)); |
847 | STRLEN len = decode_uint (dec); |
|
|
848 | |
|
|
849 | WANT (len); |
|
|
850 | sv_catpvn (sv, dec->cur, len); |
|
|
851 | dec->cur += len; |
619 | } |
852 | } |
620 | } |
853 | } |
621 | else |
854 | else |
622 | { |
855 | { |
623 | STRLEN len = decode_uint (dec); |
856 | STRLEN len = decode_uint (dec); |
624 | |
857 | |
625 | WANT (len); |
858 | WANT (len); |
626 | sv = newSVpvn (dec->cur, len); |
859 | sv = newSVpvn (dec->cur, len); |
627 | dec->cur += len; |
860 | dec->cur += len; |
|
|
861 | |
|
|
862 | if (ecb_expect_false (dec->stringref) |
|
|
863 | && SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1)) |
|
|
864 | av_push (dec->stringref, SvREFCNT_inc_NN (sv)); |
628 | } |
865 | } |
629 | |
866 | |
630 | if (utf8) |
867 | if (utf8) |
|
|
868 | { |
|
|
869 | if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8)) |
|
|
870 | if (!is_utf8_string (SvPVX (sv), SvCUR (sv))) |
|
|
871 | ERR ("corrupted CBOR data (invalid UTF-8 in text string)"); |
|
|
872 | |
631 | SvUTF8_on (sv); |
873 | SvUTF8_on (sv); |
|
|
874 | } |
632 | |
875 | |
633 | return sv; |
876 | return sv; |
634 | |
877 | |
635 | fail: |
878 | fail: |
636 | SvREFCNT_dec (sv); |
879 | SvREFCNT_dec (sv); |
… | |
… | |
638 | } |
881 | } |
639 | |
882 | |
640 | static SV * |
883 | static SV * |
641 | decode_tagged (dec_t *dec) |
884 | decode_tagged (dec_t *dec) |
642 | { |
885 | { |
|
|
886 | SV *sv = 0; |
643 | UV tag = decode_uint (dec); |
887 | UV tag = decode_uint (dec); |
|
|
888 | |
|
|
889 | WANT (1); |
|
|
890 | |
|
|
891 | switch (tag) |
|
|
892 | { |
|
|
893 | case CBOR_TAG_MAGIC: |
644 | SV *sv = decode_sv (dec); |
894 | sv = decode_sv (dec); |
|
|
895 | break; |
645 | |
896 | |
646 | if (tag == CBOR_TAG_MAGIC) |
897 | case CBOR_TAG_INDIRECTION: |
647 | return sv; |
898 | sv = newRV_noinc (decode_sv (dec)); |
|
|
899 | break; |
648 | |
900 | |
649 | if (tag == CBOR_TAG_PERL_OBJECT) |
901 | case CBOR_TAG_STRINGREF_NAMESPACE: |
650 | { |
902 | { |
|
|
903 | ENTER; SAVETMPS; |
|
|
904 | |
|
|
905 | SAVESPTR (dec->stringref); |
|
|
906 | dec->stringref = (AV *)sv_2mortal ((SV *)newAV ()); |
|
|
907 | |
|
|
908 | sv = decode_sv (dec); |
|
|
909 | |
|
|
910 | FREETMPS; LEAVE; |
|
|
911 | } |
|
|
912 | break; |
|
|
913 | |
|
|
914 | case CBOR_TAG_STRINGREF: |
|
|
915 | { |
|
|
916 | if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT)) |
|
|
917 | ERR ("corrupted CBOR data (stringref index not an unsigned integer)"); |
|
|
918 | |
|
|
919 | UV idx = decode_uint (dec); |
|
|
920 | |
|
|
921 | if (!dec->stringref || (int)idx > AvFILLp (dec->stringref)) |
|
|
922 | ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)"); |
|
|
923 | |
|
|
924 | sv = newSVsv (AvARRAY (dec->stringref)[idx]); |
|
|
925 | } |
|
|
926 | break; |
|
|
927 | |
|
|
928 | case CBOR_TAG_VALUE_SHAREABLE: |
|
|
929 | { |
|
|
930 | if (ecb_expect_false (!dec->shareable)) |
|
|
931 | dec->shareable = (AV *)sv_2mortal ((SV *)newAV ()); |
|
|
932 | |
|
|
933 | if (dec->cbor.flags & F_ALLOW_CYCLES) |
|
|
934 | { |
|
|
935 | sv = newSV (0); |
|
|
936 | av_push (dec->shareable, SvREFCNT_inc_NN (sv)); |
|
|
937 | |
|
|
938 | SV *osv = decode_sv (dec); |
|
|
939 | sv_setsv (sv, osv); |
|
|
940 | SvREFCNT_dec_NN (osv); |
|
|
941 | } |
|
|
942 | else |
|
|
943 | { |
|
|
944 | av_push (dec->shareable, &PL_sv_undef); |
|
|
945 | int idx = AvFILLp (dec->shareable); |
|
|
946 | sv = decode_sv (dec); |
|
|
947 | av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv)); |
|
|
948 | } |
|
|
949 | } |
|
|
950 | break; |
|
|
951 | |
|
|
952 | case CBOR_TAG_VALUE_SHAREDREF: |
|
|
953 | { |
|
|
954 | if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT)) |
|
|
955 | ERR ("corrupted CBOR data (sharedref index not an unsigned integer)"); |
|
|
956 | |
|
|
957 | UV idx = decode_uint (dec); |
|
|
958 | |
|
|
959 | if (!dec->shareable || (int)idx > AvFILLp (dec->shareable)) |
|
|
960 | ERR ("corrupted CBOR data (sharedref index out of bounds)"); |
|
|
961 | |
|
|
962 | sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]); |
|
|
963 | |
|
|
964 | if (sv == &PL_sv_undef) |
|
|
965 | ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled"); |
|
|
966 | } |
|
|
967 | break; |
|
|
968 | |
|
|
969 | case CBOR_TAG_PERL_OBJECT: |
|
|
970 | { |
|
|
971 | sv = decode_sv (dec); |
|
|
972 | |
651 | if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV) |
973 | if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV) |
652 | ERR ("corrupted CBOR data (non-array perl object)"); |
974 | ERR ("corrupted CBOR data (non-array perl object)"); |
|
|
975 | |
|
|
976 | AV *av = (AV *)SvRV (sv); |
|
|
977 | int len = av_len (av) + 1; |
|
|
978 | HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0); |
|
|
979 | |
|
|
980 | if (!stash) |
|
|
981 | ERR ("cannot decode perl-object (package does not exist)"); |
|
|
982 | |
|
|
983 | GV *method = gv_fetchmethod_autoload (stash, "THAW", 0); |
|
|
984 | |
|
|
985 | if (!method) |
|
|
986 | ERR ("cannot decode perl-object (package does not have a THAW method)"); |
|
|
987 | |
|
|
988 | dSP; |
|
|
989 | |
|
|
990 | ENTER; SAVETMPS; PUSHMARK (SP); |
|
|
991 | EXTEND (SP, len + 1); |
|
|
992 | // we re-bless the reference to get overload and other niceties right |
|
|
993 | PUSHs (*av_fetch (av, 0, 1)); |
|
|
994 | PUSHs (sv_cbor); |
|
|
995 | |
|
|
996 | int i; |
|
|
997 | |
|
|
998 | for (i = 1; i < len; ++i) |
|
|
999 | PUSHs (*av_fetch (av, i, 1)); |
|
|
1000 | |
|
|
1001 | PUTBACK; |
|
|
1002 | call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL); |
|
|
1003 | SPAGAIN; |
|
|
1004 | |
|
|
1005 | if (SvTRUE (ERRSV)) |
|
|
1006 | { |
|
|
1007 | FREETMPS; LEAVE; |
|
|
1008 | ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV)))); |
|
|
1009 | } |
|
|
1010 | |
|
|
1011 | SvREFCNT_dec (sv); |
|
|
1012 | sv = SvREFCNT_inc (POPs); |
|
|
1013 | |
|
|
1014 | PUTBACK; |
|
|
1015 | |
|
|
1016 | FREETMPS; LEAVE; |
653 | |
1017 | } |
654 | // TODO |
1018 | break; |
655 | } |
|
|
656 | |
1019 | |
|
|
1020 | default: |
|
|
1021 | { |
|
|
1022 | sv = decode_sv (dec); |
|
|
1023 | |
|
|
1024 | dSP; |
|
|
1025 | ENTER; SAVETMPS; PUSHMARK (SP); |
|
|
1026 | EXTEND (SP, 2); |
|
|
1027 | PUSHs (newSVuv (tag)); |
|
|
1028 | PUSHs (sv); |
|
|
1029 | |
|
|
1030 | PUTBACK; |
|
|
1031 | int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL); |
|
|
1032 | SPAGAIN; |
|
|
1033 | |
|
|
1034 | if (SvTRUE (ERRSV)) |
|
|
1035 | { |
|
|
1036 | FREETMPS; LEAVE; |
|
|
1037 | ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV)))); |
|
|
1038 | } |
|
|
1039 | |
|
|
1040 | if (count) |
|
|
1041 | { |
|
|
1042 | SvREFCNT_dec (sv); |
|
|
1043 | sv = SvREFCNT_inc (POPs); |
|
|
1044 | } |
|
|
1045 | else |
|
|
1046 | { |
657 | AV *av = newAV (); |
1047 | AV *av = newAV (); |
658 | av_push (av, newSVuv (tag)); |
1048 | av_push (av, newSVuv (tag)); |
659 | av_push (av, sv); |
1049 | av_push (av, sv); |
660 | |
1050 | |
661 | HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash |
1051 | HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash |
662 | ? cbor_tagged_stash |
1052 | ? cbor_tagged_stash |
663 | : gv_stashpv ("CBOR::XS::Tagged" , 1); |
1053 | : gv_stashpv ("CBOR::XS::Tagged" , 1); |
664 | |
|
|
665 | return sv_bless (newRV_noinc ((SV *)av), tagged_stash); |
1054 | sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash); |
|
|
1055 | } |
|
|
1056 | |
|
|
1057 | PUTBACK; |
|
|
1058 | |
|
|
1059 | FREETMPS; LEAVE; |
|
|
1060 | } |
|
|
1061 | break; |
|
|
1062 | } |
|
|
1063 | |
|
|
1064 | return sv; |
666 | |
1065 | |
667 | fail: |
1066 | fail: |
668 | SvREFCNT_dec (sv); |
1067 | SvREFCNT_dec (sv); |
669 | return &PL_sv_undef; |
1068 | return &PL_sv_undef; |
670 | } |
1069 | } |
… | |
… | |
672 | static SV * |
1071 | static SV * |
673 | decode_sv (dec_t *dec) |
1072 | decode_sv (dec_t *dec) |
674 | { |
1073 | { |
675 | WANT (1); |
1074 | WANT (1); |
676 | |
1075 | |
677 | switch (*dec->cur >> 5) |
1076 | switch (*dec->cur >> MAJOR_SHIFT) |
678 | { |
1077 | { |
679 | case 0: // unsigned int |
1078 | case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec)); |
680 | return newSVuv (decode_uint (dec)); |
1079 | case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec)); |
681 | case 1: // negative int |
1080 | case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0); |
682 | return newSViv (-1 - (IV)decode_uint (dec)); |
1081 | case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1); |
683 | case 2: // octet string |
1082 | case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec); |
684 | return decode_str (dec, 0); |
1083 | case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec); |
685 | case 3: // utf-8 string |
1084 | case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec); |
686 | return decode_str (dec, 1); |
1085 | |
687 | case 4: // array |
1086 | case MAJOR_MISC >> MAJOR_SHIFT: |
688 | return decode_av (dec); |
|
|
689 | case 5: // map |
|
|
690 | return decode_hv (dec); |
|
|
691 | case 6: // tag |
|
|
692 | return decode_tagged (dec); |
|
|
693 | case 7: // misc |
|
|
694 | switch (*dec->cur++ & 31) |
1087 | switch (*dec->cur++ & MINOR_MASK) |
695 | { |
1088 | { |
696 | case 20: |
1089 | case SIMPLE_FALSE: |
697 | #if CBOR_SLOW |
1090 | #if CBOR_SLOW |
698 | cbor_false = get_bool ("CBOR::XS::false"); |
1091 | types_false = get_bool ("Types::Serialiser::false"); |
699 | #endif |
1092 | #endif |
700 | return newSVsv (cbor_false); |
1093 | return newSVsv (types_false); |
701 | case 21: |
1094 | case SIMPLE_TRUE: |
702 | #if CBOR_SLOW |
1095 | #if CBOR_SLOW |
703 | cbor_true = get_bool ("CBOR::XS::true"); |
1096 | types_true = get_bool ("Types::Serialiser::true"); |
704 | #endif |
1097 | #endif |
705 | return newSVsv (cbor_true); |
1098 | return newSVsv (types_true); |
706 | case 22: |
1099 | case SIMPLE_NULL: |
707 | return newSVsv (&PL_sv_undef); |
1100 | return newSVsv (&PL_sv_undef); |
|
|
1101 | case SIMPLE_UNDEF: |
|
|
1102 | #if CBOR_SLOW |
|
|
1103 | types_error = get_bool ("Types::Serialiser::error"); |
|
|
1104 | #endif |
|
|
1105 | return newSVsv (types_error); |
708 | |
1106 | |
709 | case 25: |
1107 | case MISC_FLOAT16: |
710 | { |
1108 | { |
711 | WANT (2); |
1109 | WANT (2); |
712 | |
1110 | |
713 | uint16_t fp = (dec->cur[0] << 8) | dec->cur[1]; |
1111 | uint16_t fp = (dec->cur[0] << 8) | dec->cur[1]; |
714 | dec->cur += 2; |
1112 | dec->cur += 2; |
715 | |
1113 | |
716 | return newSVnv (ecb_binary16_to_float (fp)); |
1114 | return newSVnv (ecb_binary16_to_float (fp)); |
717 | } |
1115 | } |
718 | |
1116 | |
719 | case 26: |
1117 | case MISC_FLOAT32: |
720 | { |
1118 | { |
721 | uint32_t fp; |
1119 | uint32_t fp; |
722 | WANT (4); |
1120 | WANT (4); |
723 | memcpy (&fp, dec->cur, 4); |
1121 | memcpy (&fp, dec->cur, 4); |
724 | dec->cur += 4; |
1122 | dec->cur += 4; |
… | |
… | |
727 | fp = ecb_bswap32 (fp); |
1125 | fp = ecb_bswap32 (fp); |
728 | |
1126 | |
729 | return newSVnv (ecb_binary32_to_float (fp)); |
1127 | return newSVnv (ecb_binary32_to_float (fp)); |
730 | } |
1128 | } |
731 | |
1129 | |
732 | case 27: |
1130 | case MISC_FLOAT64: |
733 | { |
1131 | { |
734 | uint64_t fp; |
1132 | uint64_t fp; |
735 | WANT (8); |
1133 | WANT (8); |
736 | memcpy (&fp, dec->cur, 8); |
1134 | memcpy (&fp, dec->cur, 8); |
737 | dec->cur += 8; |
1135 | dec->cur += 8; |
… | |
… | |
740 | fp = ecb_bswap64 (fp); |
1138 | fp = ecb_bswap64 (fp); |
741 | |
1139 | |
742 | return newSVnv (ecb_binary64_to_double (fp)); |
1140 | return newSVnv (ecb_binary64_to_double (fp)); |
743 | } |
1141 | } |
744 | |
1142 | |
745 | // 0..19 unassigned |
1143 | // 0..19 unassigned simple |
746 | // 24 reserved + unassigned (reserved values are not encodable) |
1144 | // 24 reserved + unassigned simple (reserved values are not encodable) |
|
|
1145 | // 28-30 unassigned misc |
|
|
1146 | // 31 break code |
747 | default: |
1147 | default: |
748 | ERR ("corrupted CBOR data (reserved/unassigned major 7 value)"); |
1148 | ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)"); |
749 | } |
1149 | } |
750 | |
1150 | |
751 | break; |
1151 | break; |
752 | } |
1152 | } |
753 | |
1153 | |
… | |
… | |
756 | } |
1156 | } |
757 | |
1157 | |
758 | static SV * |
1158 | static SV * |
759 | decode_cbor (SV *string, CBOR *cbor, char **offset_return) |
1159 | decode_cbor (SV *string, CBOR *cbor, char **offset_return) |
760 | { |
1160 | { |
761 | dec_t dec; |
1161 | dec_t dec = { }; |
762 | SV *sv; |
1162 | SV *sv; |
|
|
1163 | STRLEN len; |
|
|
1164 | char *data = SvPVbyte (string, len); |
763 | |
1165 | |
764 | /* work around bugs in 5.10 where manipulating magic values |
|
|
765 | * makes perl ignore the magic in subsequent accesses. |
|
|
766 | * also make a copy of non-PV values, to get them into a clean |
|
|
767 | * state (SvPV should do that, but it's buggy, see below). |
|
|
768 | */ |
|
|
769 | /*SvGETMAGIC (string);*/ |
|
|
770 | if (SvMAGICAL (string) || !SvPOK (string)) |
|
|
771 | string = sv_2mortal (newSVsv (string)); |
|
|
772 | |
|
|
773 | SvUPGRADE (string, SVt_PV); |
|
|
774 | |
|
|
775 | /* work around a bug in perl 5.10, which causes SvCUR to fail an |
|
|
776 | * assertion with -DDEBUGGING, although SvCUR is documented to |
|
|
777 | * return the xpv_cur field which certainly exists after upgrading. |
|
|
778 | * according to nicholas clark, calling SvPOK fixes this. |
|
|
779 | * But it doesn't fix it, so try another workaround, call SvPV_nolen |
|
|
780 | * and hope for the best. |
|
|
781 | * Damnit, SvPV_nolen still trips over yet another assertion. This |
|
|
782 | * assertion business is seriously broken, try yet another workaround |
|
|
783 | * for the broken -DDEBUGGING. |
|
|
784 | */ |
|
|
785 | { |
|
|
786 | #ifdef DEBUGGING |
|
|
787 | STRLEN offset = SvOK (string) ? sv_len (string) : 0; |
|
|
788 | #else |
|
|
789 | STRLEN offset = SvCUR (string); |
|
|
790 | #endif |
|
|
791 | |
|
|
792 | if (offset > cbor->max_size && cbor->max_size) |
1166 | if (len > cbor->max_size && cbor->max_size) |
793 | croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu", |
1167 | croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu", |
794 | (unsigned long)SvCUR (string), (unsigned long)cbor->max_size); |
1168 | (unsigned long)len, (unsigned long)cbor->max_size); |
795 | } |
|
|
796 | |
|
|
797 | sv_utf8_downgrade (string, 0); |
|
|
798 | |
1169 | |
799 | dec.cbor = *cbor; |
1170 | dec.cbor = *cbor; |
800 | dec.cur = (U8 *)SvPVX (string); |
1171 | dec.cur = (U8 *)data; |
801 | dec.end = (U8 *)SvEND (string); |
1172 | dec.end = (U8 *)data + len; |
802 | dec.err = 0; |
|
|
803 | dec.depth = 0; |
|
|
804 | |
1173 | |
805 | sv = decode_sv (&dec); |
1174 | sv = decode_sv (&dec); |
806 | |
1175 | |
807 | if (offset_return) |
1176 | if (offset_return) |
808 | *offset_return = dec.cur; |
1177 | *offset_return = dec.cur; |
… | |
… | |
811 | if (dec.cur != dec.end && !dec.err) |
1180 | if (dec.cur != dec.end && !dec.err) |
812 | dec.err = "garbage after CBOR object"; |
1181 | dec.err = "garbage after CBOR object"; |
813 | |
1182 | |
814 | if (dec.err) |
1183 | if (dec.err) |
815 | { |
1184 | { |
|
|
1185 | if (dec.shareable) |
|
|
1186 | { |
|
|
1187 | // need to break cyclic links, which whould all be in shareable |
|
|
1188 | int i; |
|
|
1189 | SV **svp; |
|
|
1190 | |
|
|
1191 | for (i = av_len (dec.shareable) + 1; i--; ) |
|
|
1192 | if ((svp = av_fetch (dec.shareable, i, 0))) |
|
|
1193 | sv_setsv (*svp, &PL_sv_undef); |
|
|
1194 | } |
|
|
1195 | |
816 | SvREFCNT_dec (sv); |
1196 | SvREFCNT_dec (sv); |
817 | croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (int)(uint8_t)*dec.cur); |
1197 | croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur); |
818 | } |
1198 | } |
819 | |
1199 | |
820 | sv = sv_2mortal (sv); |
1200 | sv = sv_2mortal (sv); |
821 | |
1201 | |
822 | return sv; |
1202 | return sv; |
823 | } |
1203 | } |
824 | |
1204 | |
|
|
1205 | ///////////////////////////////////////////////////////////////////////////// |
|
|
1206 | // incremental parser |
|
|
1207 | |
|
|
1208 | #define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0) |
|
|
1209 | |
|
|
1210 | // returns 0 for notyet, 1 for success or error |
|
|
1211 | static int |
|
|
1212 | incr_parse (CBOR *self, SV *cborstr) |
|
|
1213 | { |
|
|
1214 | STRLEN cur; |
|
|
1215 | SvPV (cborstr, cur); |
|
|
1216 | |
|
|
1217 | while (ecb_expect_true (self->incr_need <= cur)) |
|
|
1218 | { |
|
|
1219 | // table of integer count bytes |
|
|
1220 | static I8 incr_len[MINOR_MASK + 1] = { |
|
|
1221 | 0, 0, 0, 0, 0, 0, 0, 0, |
|
|
1222 | 0, 0, 0, 0, 0, 0, 0, 0, |
|
|
1223 | 0, 0, 0, 0, 0, 0, 0, 0, |
|
|
1224 | 1, 2, 4, 8,-1,-1,-1,-2 |
|
|
1225 | }; |
|
|
1226 | |
|
|
1227 | const U8 *p = SvPVX (cborstr) + self->incr_pos; |
|
|
1228 | U8 m = *p & MINOR_MASK; |
|
|
1229 | IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]); |
|
|
1230 | I8 ilen = incr_len[m]; |
|
|
1231 | |
|
|
1232 | self->incr_need = self->incr_pos + 1; |
|
|
1233 | |
|
|
1234 | if (ecb_expect_false (ilen < 0)) |
|
|
1235 | { |
|
|
1236 | if (m != MINOR_INDEF) |
|
|
1237 | return 1; // error |
|
|
1238 | |
|
|
1239 | if (*p == (MAJOR_MISC | MINOR_INDEF)) |
|
|
1240 | { |
|
|
1241 | if (count >= 0) |
|
|
1242 | return 1; // error |
|
|
1243 | |
|
|
1244 | count = 1; |
|
|
1245 | } |
|
|
1246 | else |
|
|
1247 | { |
|
|
1248 | av_push (self->incr_count, newSViv (-1)); //TODO: nest |
|
|
1249 | count = -1; |
|
|
1250 | } |
|
|
1251 | } |
|
|
1252 | else |
|
|
1253 | { |
|
|
1254 | self->incr_need += ilen; |
|
|
1255 | if (ecb_expect_false (self->incr_need > cur)) |
|
|
1256 | return 0; |
|
|
1257 | |
|
|
1258 | int major = *p >> MAJOR_SHIFT; |
|
|
1259 | |
|
|
1260 | switch (major) |
|
|
1261 | { |
|
|
1262 | case MAJOR_BYTES >> MAJOR_SHIFT: |
|
|
1263 | case MAJOR_TEXT >> MAJOR_SHIFT: |
|
|
1264 | case MAJOR_ARRAY >> MAJOR_SHIFT: |
|
|
1265 | case MAJOR_MAP >> MAJOR_SHIFT: |
|
|
1266 | { |
|
|
1267 | UV len; |
|
|
1268 | |
|
|
1269 | if (ecb_expect_false (ilen)) |
|
|
1270 | { |
|
|
1271 | len = 0; |
|
|
1272 | |
|
|
1273 | do { |
|
|
1274 | len = (len << 8) | *++p; |
|
|
1275 | } while (--ilen); |
|
|
1276 | } |
|
|
1277 | else |
|
|
1278 | len = m; |
|
|
1279 | |
|
|
1280 | switch (major) |
|
|
1281 | { |
|
|
1282 | case MAJOR_BYTES >> MAJOR_SHIFT: |
|
|
1283 | case MAJOR_TEXT >> MAJOR_SHIFT: |
|
|
1284 | self->incr_need += len; |
|
|
1285 | if (ecb_expect_false (self->incr_need > cur)) |
|
|
1286 | return 0; |
|
|
1287 | |
|
|
1288 | break; |
|
|
1289 | |
|
|
1290 | case MAJOR_MAP >> MAJOR_SHIFT: |
|
|
1291 | len <<= 1; |
|
|
1292 | case MAJOR_ARRAY >> MAJOR_SHIFT: |
|
|
1293 | if (len) |
|
|
1294 | { |
|
|
1295 | av_push (self->incr_count, newSViv (len + 1)); //TODO: nest |
|
|
1296 | count = len + 1; |
|
|
1297 | } |
|
|
1298 | break; |
|
|
1299 | } |
|
|
1300 | } |
|
|
1301 | } |
|
|
1302 | } |
|
|
1303 | |
|
|
1304 | self->incr_pos = self->incr_need; |
|
|
1305 | |
|
|
1306 | if (count > 0) |
|
|
1307 | { |
|
|
1308 | while (!--count) |
|
|
1309 | { |
|
|
1310 | if (!AvFILLp (self->incr_count)) |
|
|
1311 | return 1; // done |
|
|
1312 | |
|
|
1313 | SvREFCNT_dec_NN (av_pop (self->incr_count)); |
|
|
1314 | count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]); |
|
|
1315 | } |
|
|
1316 | |
|
|
1317 | SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count; |
|
|
1318 | } |
|
|
1319 | } |
|
|
1320 | |
|
|
1321 | return 0; |
|
|
1322 | } |
|
|
1323 | |
|
|
1324 | |
825 | ///////////////////////////////////////////////////////////////////////////// |
1325 | ///////////////////////////////////////////////////////////////////////////// |
826 | // XS interface functions |
1326 | // XS interface functions |
827 | |
1327 | |
828 | MODULE = CBOR::XS PACKAGE = CBOR::XS |
1328 | MODULE = CBOR::XS PACKAGE = CBOR::XS |
829 | |
1329 | |
830 | BOOT: |
1330 | BOOT: |
831 | { |
1331 | { |
832 | cbor_stash = gv_stashpv ("CBOR::XS" , 1); |
1332 | cbor_stash = gv_stashpv ("CBOR::XS" , 1); |
833 | cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1); |
|
|
834 | cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1); |
1333 | cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1); |
835 | |
1334 | |
836 | cbor_true = get_bool ("CBOR::XS::true"); |
1335 | types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1); |
837 | cbor_false = get_bool ("CBOR::XS::false"); |
1336 | types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1); |
|
|
1337 | |
|
|
1338 | types_true = get_bool ("Types::Serialiser::true" ); |
|
|
1339 | types_false = get_bool ("Types::Serialiser::false"); |
|
|
1340 | types_error = get_bool ("Types::Serialiser::error"); |
|
|
1341 | |
|
|
1342 | default_filter = newSVpv ("CBOR::XS::default_filter", 0); |
|
|
1343 | |
|
|
1344 | sv_cbor = newSVpv ("CBOR", 0); |
|
|
1345 | SvREADONLY_on (sv_cbor); |
838 | } |
1346 | } |
839 | |
1347 | |
840 | PROTOTYPES: DISABLE |
1348 | PROTOTYPES: DISABLE |
841 | |
1349 | |
842 | void CLONE (...) |
1350 | void CLONE (...) |
843 | CODE: |
1351 | CODE: |
844 | cbor_stash = 0; |
1352 | cbor_stash = 0; |
845 | cbor_boolean_stash = 0; |
|
|
846 | cbor_tagged_stash = 0; |
1353 | cbor_tagged_stash = 0; |
|
|
1354 | types_error_stash = 0; |
|
|
1355 | types_boolean_stash = 0; |
847 | |
1356 | |
848 | void new (char *klass) |
1357 | void new (char *klass) |
849 | PPCODE: |
1358 | PPCODE: |
850 | { |
1359 | { |
851 | SV *pv = NEWSV (0, sizeof (CBOR)); |
1360 | SV *pv = NEWSV (0, sizeof (CBOR)); |
… | |
… | |
859 | |
1368 | |
860 | void shrink (CBOR *self, int enable = 1) |
1369 | void shrink (CBOR *self, int enable = 1) |
861 | ALIAS: |
1370 | ALIAS: |
862 | shrink = F_SHRINK |
1371 | shrink = F_SHRINK |
863 | allow_unknown = F_ALLOW_UNKNOWN |
1372 | allow_unknown = F_ALLOW_UNKNOWN |
|
|
1373 | allow_sharing = F_ALLOW_SHARING |
|
|
1374 | allow_cycles = F_ALLOW_CYCLES |
|
|
1375 | pack_strings = F_PACK_STRINGS |
|
|
1376 | validate_utf8 = F_VALIDATE_UTF8 |
864 | PPCODE: |
1377 | PPCODE: |
865 | { |
1378 | { |
866 | if (enable) |
1379 | if (enable) |
867 | self->flags |= ix; |
1380 | self->flags |= ix; |
868 | else |
1381 | else |
… | |
… | |
873 | |
1386 | |
874 | void get_shrink (CBOR *self) |
1387 | void get_shrink (CBOR *self) |
875 | ALIAS: |
1388 | ALIAS: |
876 | get_shrink = F_SHRINK |
1389 | get_shrink = F_SHRINK |
877 | get_allow_unknown = F_ALLOW_UNKNOWN |
1390 | get_allow_unknown = F_ALLOW_UNKNOWN |
|
|
1391 | get_allow_sharing = F_ALLOW_SHARING |
|
|
1392 | get_allow_cycles = F_ALLOW_CYCLES |
|
|
1393 | get_pack_strings = F_PACK_STRINGS |
|
|
1394 | get_validate_utf8 = F_VALIDATE_UTF8 |
878 | PPCODE: |
1395 | PPCODE: |
879 | XPUSHs (boolSV (self->flags & ix)); |
1396 | XPUSHs (boolSV (self->flags & ix)); |
880 | |
1397 | |
881 | void max_depth (CBOR *self, U32 max_depth = 0x80000000UL) |
1398 | void max_depth (CBOR *self, U32 max_depth = 0x80000000UL) |
882 | PPCODE: |
1399 | PPCODE: |
… | |
… | |
898 | CODE: |
1415 | CODE: |
899 | RETVAL = self->max_size; |
1416 | RETVAL = self->max_size; |
900 | OUTPUT: |
1417 | OUTPUT: |
901 | RETVAL |
1418 | RETVAL |
902 | |
1419 | |
903 | #if 0 //TODO |
1420 | void filter (CBOR *self, SV *filter = 0) |
904 | |
|
|
905 | void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef) |
|
|
906 | PPCODE: |
1421 | PPCODE: |
907 | { |
|
|
908 | SvREFCNT_dec (self->cb_object); |
1422 | SvREFCNT_dec (self->filter); |
909 | self->cb_object = SvOK (cb) ? newSVsv (cb) : 0; |
1423 | self->filter = filter ? newSVsv (filter) : filter; |
910 | |
|
|
911 | XPUSHs (ST (0)); |
1424 | XPUSHs (ST (0)); |
912 | } |
|
|
913 | |
1425 | |
914 | void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef) |
1426 | SV *get_filter (CBOR *self) |
915 | PPCODE: |
1427 | CODE: |
916 | { |
1428 | RETVAL = self->filter ? self->filter : NEWSV (0, 0); |
917 | if (!self->cb_sk_object) |
1429 | OUTPUT: |
918 | self->cb_sk_object = newHV (); |
1430 | RETVAL |
919 | |
|
|
920 | if (SvOK (cb)) |
|
|
921 | hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0); |
|
|
922 | else |
|
|
923 | { |
|
|
924 | hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0); |
|
|
925 | |
|
|
926 | if (!HvKEYS (self->cb_sk_object)) |
|
|
927 | { |
|
|
928 | SvREFCNT_dec (self->cb_sk_object); |
|
|
929 | self->cb_sk_object = 0; |
|
|
930 | } |
|
|
931 | } |
|
|
932 | |
|
|
933 | XPUSHs (ST (0)); |
|
|
934 | } |
|
|
935 | |
|
|
936 | #endif |
|
|
937 | |
1431 | |
938 | void encode (CBOR *self, SV *scalar) |
1432 | void encode (CBOR *self, SV *scalar) |
939 | PPCODE: |
1433 | PPCODE: |
940 | PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN; |
1434 | PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN; |
941 | XPUSHs (scalar); |
1435 | XPUSHs (scalar); |
… | |
… | |
954 | EXTEND (SP, 2); |
1448 | EXTEND (SP, 2); |
955 | PUSHs (sv); |
1449 | PUSHs (sv); |
956 | PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr)))); |
1450 | PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr)))); |
957 | } |
1451 | } |
958 | |
1452 | |
959 | #if 0 |
1453 | void incr_parse (CBOR *self, SV *cborstr) |
|
|
1454 | ALIAS: |
|
|
1455 | incr_parse_multiple = 1 |
|
|
1456 | PPCODE: |
|
|
1457 | { |
|
|
1458 | if (SvUTF8 (cborstr)) |
|
|
1459 | sv_utf8_downgrade (cborstr, 0); |
|
|
1460 | |
|
|
1461 | if (!self->incr_count) |
|
|
1462 | { |
|
|
1463 | self->incr_count = newAV (); |
|
|
1464 | self->incr_pos = 0; |
|
|
1465 | self->incr_need = 1; |
|
|
1466 | |
|
|
1467 | av_push (self->incr_count, newSViv (1)); |
|
|
1468 | } |
|
|
1469 | |
|
|
1470 | do |
|
|
1471 | { |
|
|
1472 | if (!incr_parse (self, cborstr)) |
|
|
1473 | { |
|
|
1474 | if (self->incr_need > self->max_size && self->max_size) |
|
|
1475 | croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu", |
|
|
1476 | (unsigned long)self->incr_need, (unsigned long)self->max_size); |
|
|
1477 | |
|
|
1478 | break; |
|
|
1479 | } |
|
|
1480 | |
|
|
1481 | SV *sv; |
|
|
1482 | char *offset; |
|
|
1483 | |
|
|
1484 | PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN; |
|
|
1485 | XPUSHs (sv); |
|
|
1486 | |
|
|
1487 | sv_chop (cborstr, offset); |
|
|
1488 | |
|
|
1489 | av_clear (self->incr_count); |
|
|
1490 | av_push (self->incr_count, newSViv (1)); |
|
|
1491 | |
|
|
1492 | self->incr_pos = 0; |
|
|
1493 | self->incr_need = self->incr_pos + 1; |
|
|
1494 | } |
|
|
1495 | while (ix); |
|
|
1496 | } |
|
|
1497 | |
|
|
1498 | void incr_reset (CBOR *self) |
|
|
1499 | CODE: |
|
|
1500 | { |
|
|
1501 | SvREFCNT_dec (self->incr_count); |
|
|
1502 | self->incr_count = 0; |
|
|
1503 | } |
960 | |
1504 | |
961 | void DESTROY (CBOR *self) |
1505 | void DESTROY (CBOR *self) |
962 | CODE: |
1506 | PPCODE: |
963 | SvREFCNT_dec (self->cb_sk_object); |
1507 | cbor_free (self); |
964 | SvREFCNT_dec (self->cb_object); |
|
|
965 | |
|
|
966 | #endif |
|
|
967 | |
1508 | |
968 | PROTOTYPES: ENABLE |
1509 | PROTOTYPES: ENABLE |
969 | |
1510 | |
970 | void encode_cbor (SV *scalar) |
1511 | void encode_cbor (SV *scalar) |
|
|
1512 | ALIAS: |
|
|
1513 | encode_cbor = 0 |
|
|
1514 | encode_cbor_sharing = F_ALLOW_SHARING |
971 | PPCODE: |
1515 | PPCODE: |
972 | { |
1516 | { |
973 | CBOR cbor; |
1517 | CBOR cbor; |
974 | cbor_init (&cbor); |
1518 | cbor_init (&cbor); |
|
|
1519 | cbor.flags |= ix; |
975 | PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN; |
1520 | PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN; |
976 | XPUSHs (scalar); |
1521 | XPUSHs (scalar); |
977 | } |
1522 | } |
978 | |
1523 | |
979 | void decode_cbor (SV *cborstr) |
1524 | void decode_cbor (SV *cborstr) |