… | |
… | |
9 | #include <limits.h> |
9 | #include <limits.h> |
10 | #include <float.h> |
10 | #include <float.h> |
11 | |
11 | |
12 | #include "ecb.h" |
12 | #include "ecb.h" |
13 | |
13 | |
14 | #if defined(__BORLANDC__) || defined(_MSC_VER) |
14 | // compatibility with perl <5.18 |
15 | # define snprintf _snprintf // C compilers have this in stdio.h |
15 | #ifndef HvNAMELEN_get |
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16 | # define HvNAMELEN_get(hv) strlen (HvNAME (hv)) |
16 | #endif |
17 | #endif |
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18 | #ifndef HvNAMELEN |
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19 | # define HvNAMELEN(hv) HvNAMELEN_get (hv) |
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20 | #endif |
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21 | #ifndef HvNAMEUTF8 |
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22 | # define HvNAMEUTF8(hv) 0 |
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23 | #endif |
17 | |
24 | |
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25 | // known tags |
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26 | enum cbor_tag |
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27 | { |
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28 | // inofficial extensions (pending iana registration) |
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29 | CBOR_TAG_PERL_OBJECT = 24, // http://cbor.schmorp.de/perl-object |
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30 | CBOR_TAG_GENERIC_OBJECT = 25, // http://cbor.schmorp.de/generic-object |
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31 | CBOR_TAG_VALUE_SHARABLE = 26, // http://cbor.schmorp.de/value-sharing |
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32 | CBOR_TAG_VALUE_SHAREDREF = 27, // http://cbor.schmorp.de/value-sharing |
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33 | CBOR_TAG_STRINGREF_NAMESPACE = 65537, // http://cbor.schmorp.de/stringref |
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34 | CBOR_TAG_STRINGREF = 28, // http://cbor.schmorp.de/stringref |
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35 | CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection |
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36 | |
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37 | // rfc7049 |
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38 | CBOR_TAG_DATETIME = 0, // rfc4287, utf-8 |
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39 | CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any |
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40 | CBOR_TAG_POS_BIGNUM = 2, // byte string |
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41 | CBOR_TAG_NEG_BIGNUM = 3, // byte string |
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42 | CBOR_TAG_DECIMAL = 4, // decimal fraction, array |
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43 | CBOR_TAG_BIGFLOAT = 5, // array |
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44 | |
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45 | CBOR_TAG_CONV_B64U = 21, // base64url, any |
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46 | CBOR_TAG_CONV_B64 = 22, // base64, any |
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47 | CBOR_TAG_CONV_HEX = 23, // base16, any |
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48 | CBOR_TAG_CBOR = 24, // embedded cbor, byte string |
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49 | |
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50 | CBOR_TAG_URI = 32, // URI rfc3986, utf-8 |
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51 | CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8 |
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52 | CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8 |
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53 | CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8 |
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54 | CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8 |
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55 | |
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56 | CBOR_TAG_MAGIC = 55799 // self-describe cbor |
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57 | }; |
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58 | |
18 | #define F_SHRINK 0x00000200UL |
59 | #define F_SHRINK 0x00000001UL |
19 | #define F_ALLOW_UNKNOWN 0x00002000UL |
60 | #define F_ALLOW_UNKNOWN 0x00000002UL |
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61 | #define F_ALLOW_SHARING 0x00000004UL //TODO |
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62 | #define F_DEDUP_STRINGS 0x00000008UL //TODO |
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63 | #define F_DEDUP_KEYS 0x00000010UL //TODO |
20 | |
64 | |
21 | #define INIT_SIZE 32 // initial scalar size to be allocated |
65 | #define INIT_SIZE 32 // initial scalar size to be allocated |
22 | |
66 | |
23 | #define SB do { |
67 | #define SB do { |
24 | #define SE } while (0) |
68 | #define SE } while (0) |
25 | |
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26 | #if __GNUC__ >= 3 |
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27 | # define expect(expr,value) __builtin_expect ((expr), (value)) |
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28 | # define INLINE static inline |
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29 | #else |
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30 | # define expect(expr,value) (expr) |
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31 | # define INLINE static |
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32 | #endif |
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33 | |
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34 | #define expect_false(expr) expect ((expr) != 0, 0) |
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35 | #define expect_true(expr) expect ((expr) != 0, 1) |
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36 | |
69 | |
37 | #define IN_RANGE_INC(type,val,beg,end) \ |
70 | #define IN_RANGE_INC(type,val,beg,end) \ |
38 | ((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \ |
71 | ((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \ |
39 | <= (unsigned type)((unsigned type)(end) - (unsigned type)(beg))) |
72 | <= (unsigned type)((unsigned type)(end) - (unsigned type)(beg))) |
40 | |
73 | |
… | |
… | |
46 | #else |
79 | #else |
47 | # define CBOR_SLOW 0 |
80 | # define CBOR_SLOW 0 |
48 | # define CBOR_STASH cbor_stash |
81 | # define CBOR_STASH cbor_stash |
49 | #endif |
82 | #endif |
50 | |
83 | |
51 | static HV *cbor_stash, *cbor_boolean_stash; // CBOR::XS:: |
84 | static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS:: |
52 | static SV *cbor_true, *cbor_false; |
85 | static SV *types_true, *types_false, *types_error, *sv_cbor; |
53 | |
86 | |
54 | typedef struct { |
87 | typedef struct { |
55 | U32 flags; |
88 | U32 flags; |
56 | U32 max_depth; |
89 | U32 max_depth; |
57 | STRLEN max_size; |
90 | STRLEN max_size; |
58 | |
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59 | SV *cb_object; |
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60 | HV *cb_sk_object; |
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61 | } CBOR; |
91 | } CBOR; |
62 | |
92 | |
63 | INLINE void |
93 | ecb_inline void |
64 | cbor_init (CBOR *cbor) |
94 | cbor_init (CBOR *cbor) |
65 | { |
95 | { |
66 | Zero (cbor, 1, CBOR); |
96 | Zero (cbor, 1, CBOR); |
67 | cbor->max_depth = 512; |
97 | cbor->max_depth = 512; |
68 | } |
98 | } |
69 | |
99 | |
70 | ///////////////////////////////////////////////////////////////////////////// |
100 | ///////////////////////////////////////////////////////////////////////////// |
71 | // utility functions |
101 | // utility functions |
72 | |
102 | |
73 | INLINE SV * |
103 | ecb_inline SV * |
74 | get_bool (const char *name) |
104 | get_bool (const char *name) |
75 | { |
105 | { |
76 | SV *sv = get_sv (name, 1); |
106 | SV *sv = get_sv (name, 1); |
77 | |
107 | |
78 | SvREADONLY_on (sv); |
108 | SvREADONLY_on (sv); |
79 | SvREADONLY_on (SvRV (sv)); |
109 | SvREADONLY_on (SvRV (sv)); |
80 | |
110 | |
81 | return sv; |
111 | return sv; |
82 | } |
112 | } |
83 | |
113 | |
84 | INLINE void |
114 | ecb_inline void |
85 | shrink (SV *sv) |
115 | shrink (SV *sv) |
86 | { |
116 | { |
87 | sv_utf8_downgrade (sv, 1); |
117 | sv_utf8_downgrade (sv, 1); |
88 | |
118 | |
89 | if (SvLEN (sv) > SvCUR (sv) + 1) |
119 | if (SvLEN (sv) > SvCUR (sv) + 1) |
… | |
… | |
95 | #endif |
125 | #endif |
96 | } |
126 | } |
97 | } |
127 | } |
98 | |
128 | |
99 | ///////////////////////////////////////////////////////////////////////////// |
129 | ///////////////////////////////////////////////////////////////////////////// |
100 | // fp hell |
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101 | |
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102 | //TODO |
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103 | |
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104 | ///////////////////////////////////////////////////////////////////////////// |
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105 | // encoder |
130 | // encoder |
106 | |
131 | |
107 | // structure used for encoding CBOR |
132 | // structure used for encoding CBOR |
108 | typedef struct |
133 | typedef struct |
109 | { |
134 | { |
110 | char *cur; // SvPVX (sv) + current output position |
135 | char *cur; // SvPVX (sv) + current output position |
111 | char *end; // SvEND (sv) |
136 | char *end; // SvEND (sv) |
112 | SV *sv; // result scalar |
137 | SV *sv; // result scalar |
113 | CBOR cbor; |
138 | CBOR cbor; |
114 | U32 depth; // recursion level |
139 | U32 depth; // recursion level |
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140 | HV *stringref; // string => index, or 0 |
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141 | HV *sharable; // ptr => index, or 0 |
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142 | HV *sharable_idx; |
115 | } enc_t; |
143 | } enc_t; |
116 | |
144 | |
117 | INLINE void |
145 | ecb_inline void |
118 | need (enc_t *enc, STRLEN len) |
146 | need (enc_t *enc, STRLEN len) |
119 | { |
147 | { |
120 | if (expect_false (enc->cur + len >= enc->end)) |
148 | if (ecb_expect_false (enc->cur + len >= enc->end)) |
121 | { |
149 | { |
122 | STRLEN cur = enc->cur - (char *)SvPVX (enc->sv); |
150 | STRLEN cur = enc->cur - (char *)SvPVX (enc->sv); |
123 | SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1); |
151 | SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1); |
124 | enc->cur = SvPVX (enc->sv) + cur; |
152 | enc->cur = SvPVX (enc->sv) + cur; |
125 | enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1; |
153 | enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1; |
126 | } |
154 | } |
127 | } |
155 | } |
128 | |
156 | |
129 | INLINE void |
157 | ecb_inline void |
130 | encode_ch (enc_t *enc, char ch) |
158 | encode_ch (enc_t *enc, char ch) |
131 | { |
159 | { |
132 | need (enc, 1); |
160 | need (enc, 1); |
133 | *enc->cur++ = ch; |
161 | *enc->cur++ = ch; |
134 | } |
162 | } |
… | |
… | |
138 | { |
166 | { |
139 | need (enc, 9); |
167 | need (enc, 9); |
140 | |
168 | |
141 | if (len < 24) |
169 | if (len < 24) |
142 | *enc->cur++ = major | len; |
170 | *enc->cur++ = major | len; |
143 | else if (len < 0x100) |
171 | else if (len <= 0xff) |
144 | { |
172 | { |
145 | *enc->cur++ = major | 24; |
173 | *enc->cur++ = major | 24; |
146 | *enc->cur++ = len; |
174 | *enc->cur++ = len; |
147 | } |
175 | } |
148 | else if (len < 0x10000) |
176 | else if (len <= 0xffff) |
149 | { |
177 | { |
150 | *enc->cur++ = major | 25; |
178 | *enc->cur++ = major | 25; |
151 | *enc->cur++ = len >> 8; |
179 | *enc->cur++ = len >> 8; |
152 | *enc->cur++ = len; |
180 | *enc->cur++ = len; |
153 | } |
181 | } |
154 | else if (len < 0x100000000) |
182 | else if (len <= 0xffffffff) |
155 | { |
183 | { |
156 | *enc->cur++ = major | 26; |
184 | *enc->cur++ = major | 26; |
157 | *enc->cur++ = len >> 24; |
185 | *enc->cur++ = len >> 24; |
158 | *enc->cur++ = len >> 16; |
186 | *enc->cur++ = len >> 16; |
159 | *enc->cur++ = len >> 8; |
187 | *enc->cur++ = len >> 8; |
160 | *enc->cur++ = len; |
188 | *enc->cur++ = len; |
161 | } |
189 | } |
162 | else if (len) |
190 | else |
163 | { |
191 | { |
164 | *enc->cur++ = major | 27; |
192 | *enc->cur++ = major | 27; |
165 | *enc->cur++ = len >> 56; |
193 | *enc->cur++ = len >> 56; |
166 | *enc->cur++ = len >> 48; |
194 | *enc->cur++ = len >> 48; |
167 | *enc->cur++ = len >> 40; |
195 | *enc->cur++ = len >> 40; |
… | |
… | |
180 | need (enc, len); |
208 | need (enc, len); |
181 | memcpy (enc->cur, str, len); |
209 | memcpy (enc->cur, str, len); |
182 | enc->cur += len; |
210 | enc->cur += len; |
183 | } |
211 | } |
184 | |
212 | |
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213 | ecb_inline void |
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214 | encode_tag (enc_t *enc, UV tag) |
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215 | { |
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216 | encode_uint (enc, 0xc0, tag); |
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217 | } |
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218 | |
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219 | static int |
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220 | encode_sharable2 (enc_t *enc, SV *sv) |
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221 | { |
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222 | if (!enc->sharable) |
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223 | enc->sharable = (HV *)sv_2mortal ((SV *)newHV ()); |
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224 | |
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225 | SV **svp = hv_fetch (enc->sharable, &sv, sizeof (sv), 1); |
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226 | |
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227 | if (SvOK (*svp)) |
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228 | { |
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229 | encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF); |
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230 | encode_uint (enc, 0x00, SvUV (*svp)); |
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231 | |
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232 | return 1; |
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233 | } |
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234 | else |
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235 | { |
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236 | sv_setuv (*svp, enc->sharable_idx++); |
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237 | encode_tag (enc, CBOR_TAG_VALUE_SHARABLE); |
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238 | |
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239 | return 0; |
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240 | } |
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241 | } |
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242 | |
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243 | ecb_inline int |
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244 | encode_sharable (enc_t *enc, SV *sv) |
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245 | { |
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246 | if (ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING) |
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247 | && ecb_expect_false (SvREFCNT (sv) > 1)) |
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248 | return encode_sharable2 (enc, sv); |
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249 | |
|
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250 | return 0; |
|
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251 | } |
|
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252 | |
185 | static void encode_sv (enc_t *enc, SV *sv); |
253 | static void encode_sv (enc_t *enc, SV *sv); |
186 | |
254 | |
187 | static void |
255 | static void |
188 | encode_av (enc_t *enc, AV *av) |
256 | encode_av (enc_t *enc, AV *av) |
189 | { |
257 | { |
… | |
… | |
228 | if (HeKLEN (he) == HEf_SVKEY) |
296 | if (HeKLEN (he) == HEf_SVKEY) |
229 | encode_sv (enc, HeSVKEY (he)); |
297 | encode_sv (enc, HeSVKEY (he)); |
230 | else |
298 | else |
231 | encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he)); |
299 | encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he)); |
232 | |
300 | |
233 | encode_sv (enc, expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he)); |
301 | encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he)); |
234 | } |
302 | } |
235 | |
303 | |
236 | if (mg) |
304 | if (mg) |
237 | encode_ch (enc, 0xe0 | 31); |
305 | encode_ch (enc, 0xe0 | 31); |
238 | |
306 | |
… | |
… | |
246 | svtype svt; |
314 | svtype svt; |
247 | |
315 | |
248 | SvGETMAGIC (sv); |
316 | SvGETMAGIC (sv); |
249 | svt = SvTYPE (sv); |
317 | svt = SvTYPE (sv); |
250 | |
318 | |
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319 | if (encode_sharable (enc, sv)) |
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320 | return; |
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321 | |
251 | if (expect_false (SvOBJECT (sv))) |
322 | if (ecb_expect_false (SvOBJECT (sv))) |
252 | { |
323 | { |
253 | HV *stash = !CBOR_SLOW || cbor_boolean_stash |
324 | HV *boolean_stash = !CBOR_SLOW || types_boolean_stash |
254 | ? cbor_boolean_stash |
325 | ? types_boolean_stash |
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326 | : gv_stashpv ("Types::Serialiser::Boolean", 1); |
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327 | HV *error_stash = !CBOR_SLOW || types_error_stash |
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328 | ? types_error_stash |
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329 | : gv_stashpv ("Types::Serialiser::Error", 1); |
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330 | HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash |
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331 | ? cbor_tagged_stash |
255 | : gv_stashpv ("CBOR::XS::Boolean", 1); |
332 | : gv_stashpv ("CBOR::XS::Tagged" , 1); |
256 | |
333 | |
257 | if (SvSTASH (sv) == stash) |
334 | HV *stash = SvSTASH (sv); |
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335 | GV *method; |
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336 | |
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337 | if (stash == boolean_stash) |
258 | encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20); |
338 | encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20); |
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339 | else if (stash == error_stash) |
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340 | encode_ch (enc, 0xe0 | 23); |
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341 | else if (stash == tagged_stash) |
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342 | { |
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343 | if (svt != SVt_PVAV) |
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344 | croak ("encountered CBOR::XS::Tagged object that isn't an array"); |
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345 | |
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346 | encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1))); |
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347 | encode_sv (enc, *av_fetch ((AV *)sv, 1, 1)); |
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348 | } |
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349 | else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0))) |
|
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350 | { |
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351 | dSP; |
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352 | |
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353 | ENTER; SAVETMPS; PUSHMARK (SP); |
|
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354 | // we re-bless the reference to get overload and other niceties right |
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355 | XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash)); |
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356 | |
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357 | PUTBACK; |
|
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358 | // G_SCALAR ensures that return value is 1 |
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359 | call_sv ((SV *)GvCV (method), G_SCALAR); |
|
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360 | SPAGAIN; |
|
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361 | |
|
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362 | // catch this surprisingly common error |
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363 | if (SvROK (TOPs) && SvRV (TOPs) == sv) |
|
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364 | croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash)); |
|
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365 | |
|
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366 | encode_sv (enc, POPs); |
|
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367 | |
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368 | PUTBACK; |
|
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369 | |
|
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370 | FREETMPS; LEAVE; |
|
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371 | } |
|
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372 | else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0) |
|
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373 | { |
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374 | dSP; |
|
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375 | |
|
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376 | ENTER; SAVETMPS; PUSHMARK (SP); |
|
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377 | EXTEND (SP, 2); |
|
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378 | // we re-bless the reference to get overload and other niceties right |
|
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379 | PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash)); |
|
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380 | PUSHs (sv_cbor); |
|
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381 | |
|
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382 | PUTBACK; |
|
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383 | int count = call_sv ((SV *)GvCV (method), G_ARRAY); |
|
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384 | SPAGAIN; |
|
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385 | |
|
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386 | // catch this surprisingly common error |
|
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387 | if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv) |
|
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388 | croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash)); |
|
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389 | |
|
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390 | encode_tag (enc, CBOR_TAG_PERL_OBJECT); |
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391 | encode_uint (enc, 0x80, count + 1); |
|
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392 | encode_str (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash)); |
|
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393 | |
|
|
394 | while (count) |
|
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395 | encode_sv (enc, SP[1 - count--]); |
|
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396 | |
|
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397 | PUTBACK; |
|
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398 | |
|
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399 | FREETMPS; LEAVE; |
|
|
400 | } |
259 | else |
401 | else |
260 | { |
|
|
261 | #if 0 //TODO |
|
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262 | if (enc->cbor.flags & F_CONV_BLESSED) |
|
|
263 | { |
|
|
264 | // we re-bless the reference to get overload and other niceties right |
|
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265 | GV *to_cbor = gv_fetchmethod_autoload (SvSTASH (sv), "TO_CBOR", 0); |
|
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266 | |
|
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267 | if (to_cbor) |
|
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268 | { |
|
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269 | dSP; |
|
|
270 | |
|
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271 | ENTER; SAVETMPS; PUSHMARK (SP); |
|
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272 | XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv))); |
|
|
273 | |
|
|
274 | // calling with G_SCALAR ensures that we always get a 1 return value |
|
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275 | PUTBACK; |
|
|
276 | call_sv ((SV *)GvCV (to_cbor), G_SCALAR); |
|
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277 | SPAGAIN; |
|
|
278 | |
|
|
279 | // catch this surprisingly common error |
|
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280 | if (SvROK (TOPs) && SvRV (TOPs) == sv) |
|
|
281 | croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv))); |
|
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282 | |
|
|
283 | sv = POPs; |
|
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284 | PUTBACK; |
|
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285 | |
|
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286 | encode_sv (enc, sv); |
|
|
287 | |
|
|
288 | FREETMPS; LEAVE; |
|
|
289 | } |
|
|
290 | else if (enc->cbor.flags & F_ALLOW_BLESSED) |
|
|
291 | encode_str (enc, "null", 4, 0); |
|
|
292 | else |
|
|
293 | croak ("encountered object '%s', but neither allow_blessed enabled nor TO_CBOR method available on it", |
402 | croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it", |
294 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
|
|
295 | } |
|
|
296 | else if (enc->cbor.flags & F_ALLOW_BLESSED) |
|
|
297 | encode_str (enc, "null", 4, 0); |
|
|
298 | else |
|
|
299 | croak ("encountered object '%s', but neither allow_blessed nor convert_blessed settings are enabled", |
|
|
300 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
403 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
301 | #endif |
|
|
302 | } |
|
|
303 | } |
404 | } |
304 | else if (svt == SVt_PVHV) |
405 | else if (svt == SVt_PVHV) |
305 | encode_hv (enc, (HV *)sv); |
406 | encode_hv (enc, (HV *)sv); |
306 | else if (svt == SVt_PVAV) |
407 | else if (svt == SVt_PVAV) |
307 | encode_av (enc, (AV *)sv); |
408 | encode_av (enc, (AV *)sv); |
308 | else if (svt < SVt_PVAV) |
|
|
309 | { |
|
|
310 | STRLEN len = 0; |
|
|
311 | char *pv = svt ? SvPV (sv, len) : 0; |
|
|
312 | |
|
|
313 | if (len == 1 && *pv == '1') |
|
|
314 | encode_ch (enc, 0xe0 | 21); |
|
|
315 | else if (len == 1 && *pv == '0') |
|
|
316 | encode_ch (enc, 0xe0 | 20); |
|
|
317 | else if (enc->cbor.flags & F_ALLOW_UNKNOWN) |
|
|
318 | encode_ch (enc, 0xe0 | 23); |
|
|
319 | else |
|
|
320 | croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1", |
|
|
321 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
|
|
322 | } |
|
|
323 | else if (enc->cbor.flags & F_ALLOW_UNKNOWN) |
|
|
324 | encode_ch (enc, 0xe0 | 23); |
|
|
325 | else |
409 | else |
326 | croak ("encountered %s, but CBOR can only represent references to arrays or hashes", |
410 | { |
327 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
411 | encode_tag (enc, CBOR_TAG_INDIRECTION); |
|
|
412 | encode_sv (enc, sv); |
|
|
413 | } |
328 | } |
414 | } |
329 | |
415 | |
330 | static void |
416 | static void |
331 | encode_nv (enc_t *enc, SV *sv) |
417 | encode_nv (enc_t *enc, SV *sv) |
332 | { |
418 | { |
333 | double nv = SvNVX (sv); |
419 | double nv = SvNVX (sv); |
334 | |
420 | |
335 | need (enc, 9); |
421 | need (enc, 9); |
336 | |
422 | |
337 | if (expect_false (nv == (U32)nv)) |
423 | if (ecb_expect_false (nv == (U32)nv)) |
338 | encode_uint (enc, 0x00, (U32)nv); |
424 | encode_uint (enc, 0x00, (U32)nv); |
339 | //TODO: maybe I32? |
425 | //TODO: maybe I32? |
340 | else if (expect_false (nv == (float)nv)) |
426 | else if (ecb_expect_false (nv == (float)nv)) |
341 | { |
427 | { |
342 | uint32_t fp = ecb_float_to_binary32 (nv); |
428 | uint32_t fp = ecb_float_to_binary32 (nv); |
343 | |
429 | |
344 | *enc->cur++ = 0xe0 | 26; |
430 | *enc->cur++ = 0xe0 | 26; |
345 | |
431 | |
… | |
… | |
365 | |
451 | |
366 | static void |
452 | static void |
367 | encode_sv (enc_t *enc, SV *sv) |
453 | encode_sv (enc_t *enc, SV *sv) |
368 | { |
454 | { |
369 | SvGETMAGIC (sv); |
455 | SvGETMAGIC (sv); |
|
|
456 | |
|
|
457 | if (encode_sharable (enc, sv)) |
|
|
458 | return; |
370 | |
459 | |
371 | if (SvPOKp (sv)) |
460 | if (SvPOKp (sv)) |
372 | { |
461 | { |
373 | STRLEN len; |
462 | STRLEN len; |
374 | char *str = SvPV (sv, len); |
463 | char *str = SvPV (sv, len); |
… | |
… | |
397 | } |
486 | } |
398 | |
487 | |
399 | static SV * |
488 | static SV * |
400 | encode_cbor (SV *scalar, CBOR *cbor) |
489 | encode_cbor (SV *scalar, CBOR *cbor) |
401 | { |
490 | { |
402 | enc_t enc; |
491 | enc_t enc = { }; |
403 | |
492 | |
404 | enc.cbor = *cbor; |
493 | enc.cbor = *cbor; |
405 | enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE)); |
494 | enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE)); |
406 | enc.cur = SvPVX (enc.sv); |
495 | enc.cur = SvPVX (enc.sv); |
407 | enc.end = SvEND (enc.sv); |
496 | enc.end = SvEND (enc.sv); |
408 | enc.depth = 0; |
|
|
409 | |
497 | |
410 | SvPOK_only (enc.sv); |
498 | SvPOK_only (enc.sv); |
411 | encode_sv (&enc, scalar); |
499 | encode_sv (&enc, scalar); |
412 | |
500 | |
413 | SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv)); |
501 | SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv)); |
… | |
… | |
429 | U8 *end; // end of input string |
517 | U8 *end; // end of input string |
430 | const char *err; // parse error, if != 0 |
518 | const char *err; // parse error, if != 0 |
431 | CBOR cbor; |
519 | CBOR cbor; |
432 | U32 depth; // recursion depth |
520 | U32 depth; // recursion depth |
433 | U32 maxdepth; // recursion depth limit |
521 | U32 maxdepth; // recursion depth limit |
|
|
522 | AV *sharable; |
434 | } dec_t; |
523 | } dec_t; |
435 | |
524 | |
436 | #define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE |
525 | #define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE |
437 | |
526 | |
438 | #define WANT(len) if (expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data"); |
527 | #define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data") |
439 | |
528 | |
440 | #define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED) |
529 | #define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED) |
441 | #define DEC_DEC_DEPTH --dec->depth |
530 | #define DEC_DEC_DEPTH --dec->depth |
442 | |
531 | |
443 | static UV |
532 | static UV |
… | |
… | |
532 | SvREFCNT_dec (av); |
621 | SvREFCNT_dec (av); |
533 | DEC_DEC_DEPTH; |
622 | DEC_DEC_DEPTH; |
534 | return &PL_sv_undef; |
623 | return &PL_sv_undef; |
535 | } |
624 | } |
536 | |
625 | |
|
|
626 | static void |
|
|
627 | decode_he (dec_t *dec, HV *hv) |
|
|
628 | { |
|
|
629 | // for speed reasons, we specialcase single-string |
|
|
630 | // byte or utf-8 strings as keys. |
|
|
631 | |
|
|
632 | if (*dec->cur >= 0x40 && *dec->cur <= 0x40 + 27) |
|
|
633 | { |
|
|
634 | I32 len = decode_uint (dec); |
|
|
635 | char *key = (char *)dec->cur; |
|
|
636 | |
|
|
637 | dec->cur += len; |
|
|
638 | |
|
|
639 | hv_store (hv, key, len, decode_sv (dec), 0); |
|
|
640 | } |
|
|
641 | else if (*dec->cur >= 0x60 && *dec->cur <= 0x60 + 27) |
|
|
642 | { |
|
|
643 | I32 len = decode_uint (dec); |
|
|
644 | char *key = (char *)dec->cur; |
|
|
645 | |
|
|
646 | dec->cur += len; |
|
|
647 | |
|
|
648 | hv_store (hv, key, -len, decode_sv (dec), 0); |
|
|
649 | } |
|
|
650 | else |
|
|
651 | { |
|
|
652 | SV *k = decode_sv (dec); |
|
|
653 | SV *v = decode_sv (dec); |
|
|
654 | |
|
|
655 | hv_store_ent (hv, k, v, 0); |
|
|
656 | SvREFCNT_dec (k); |
|
|
657 | } |
|
|
658 | } |
|
|
659 | |
537 | static SV * |
660 | static SV * |
538 | decode_hv (dec_t *dec) |
661 | decode_hv (dec_t *dec) |
539 | { |
662 | { |
540 | HV *hv = newHV (); |
663 | HV *hv = newHV (); |
541 | |
664 | |
… | |
… | |
553 | { |
676 | { |
554 | ++dec->cur; |
677 | ++dec->cur; |
555 | break; |
678 | break; |
556 | } |
679 | } |
557 | |
680 | |
558 | SV *k = decode_sv (dec); |
681 | decode_he (dec, hv); |
559 | SV *v = decode_sv (dec); |
|
|
560 | |
|
|
561 | hv_store_ent (hv, k, v, 0); |
|
|
562 | } |
682 | } |
563 | } |
683 | } |
564 | else |
684 | else |
565 | { |
685 | { |
566 | int len = decode_uint (dec); |
686 | int pairs = decode_uint (dec); |
567 | |
687 | |
568 | while (len--) |
688 | while (pairs--) |
569 | { |
689 | decode_he (dec, hv); |
570 | SV *k = decode_sv (dec); |
|
|
571 | SV *v = decode_sv (dec); |
|
|
572 | |
|
|
573 | hv_store_ent (hv, k, v, 0); |
|
|
574 | } |
|
|
575 | } |
690 | } |
576 | |
691 | |
577 | DEC_DEC_DEPTH; |
692 | DEC_DEC_DEPTH; |
578 | return newRV_noinc ((SV *)hv); |
693 | return newRV_noinc ((SV *)hv); |
579 | |
|
|
580 | #if 0 |
|
|
581 | SV *sv; |
|
|
582 | HV *hv = newHV (); |
|
|
583 | |
|
|
584 | DEC_INC_DEPTH; |
|
|
585 | decode_ws (dec); |
|
|
586 | |
|
|
587 | for (;;) |
|
|
588 | { |
|
|
589 | // heuristic: assume that |
|
|
590 | // a) decode_str + hv_store_ent are abysmally slow. |
|
|
591 | // b) most hash keys are short, simple ascii text. |
|
|
592 | // => try to "fast-match" such strings to avoid |
|
|
593 | // the overhead of decode_str + hv_store_ent. |
|
|
594 | { |
|
|
595 | SV *value; |
|
|
596 | char *p = dec->cur; |
|
|
597 | char *e = p + 24; // only try up to 24 bytes |
|
|
598 | |
|
|
599 | for (;;) |
|
|
600 | { |
|
|
601 | // the >= 0x80 is false on most architectures |
|
|
602 | if (p == e || *p < 0x20 || *p >= 0x80 || *p == '\\') |
|
|
603 | { |
|
|
604 | // slow path, back up and use decode_str |
|
|
605 | SV *key = decode_str (dec); |
|
|
606 | if (!key) |
|
|
607 | goto fail; |
|
|
608 | |
|
|
609 | decode_ws (dec); EXPECT_CH (':'); |
|
|
610 | |
|
|
611 | decode_ws (dec); |
|
|
612 | value = decode_sv (dec); |
|
|
613 | if (!value) |
|
|
614 | { |
|
|
615 | SvREFCNT_dec (key); |
|
|
616 | goto fail; |
|
|
617 | } |
|
|
618 | |
|
|
619 | hv_store_ent (hv, key, value, 0); |
|
|
620 | SvREFCNT_dec (key); |
|
|
621 | |
|
|
622 | break; |
|
|
623 | } |
|
|
624 | else if (*p == '"') |
|
|
625 | { |
|
|
626 | // fast path, got a simple key |
|
|
627 | char *key = dec->cur; |
|
|
628 | int len = p - key; |
|
|
629 | dec->cur = p + 1; |
|
|
630 | |
|
|
631 | decode_ws (dec); EXPECT_CH (':'); |
|
|
632 | |
|
|
633 | decode_ws (dec); |
|
|
634 | value = decode_sv (dec); |
|
|
635 | if (!value) |
|
|
636 | goto fail; |
|
|
637 | |
|
|
638 | hv_store (hv, key, len, value, 0); |
|
|
639 | |
|
|
640 | break; |
|
|
641 | } |
|
|
642 | |
|
|
643 | ++p; |
|
|
644 | } |
|
|
645 | } |
|
|
646 | |
|
|
647 | decode_ws (dec); |
|
|
648 | |
|
|
649 | if (*dec->cur == '}') |
|
|
650 | { |
|
|
651 | ++dec->cur; |
|
|
652 | break; |
|
|
653 | } |
|
|
654 | |
|
|
655 | if (*dec->cur != ',') |
|
|
656 | ERR (", or } expected while parsing object/hash"); |
|
|
657 | |
|
|
658 | ++dec->cur; |
|
|
659 | |
|
|
660 | decode_ws (dec); |
|
|
661 | |
|
|
662 | if (*dec->cur == '}' && dec->cbor.flags & F_RELAXED) |
|
|
663 | { |
|
|
664 | ++dec->cur; |
|
|
665 | break; |
|
|
666 | } |
|
|
667 | } |
|
|
668 | |
|
|
669 | DEC_DEC_DEPTH; |
|
|
670 | sv = newRV_noinc ((SV *)hv); |
|
|
671 | |
|
|
672 | // check filter callbacks |
|
|
673 | if (dec->cbor.flags & F_HOOK) |
|
|
674 | { |
|
|
675 | if (dec->cbor.cb_sk_object && HvKEYS (hv) == 1) |
|
|
676 | { |
|
|
677 | HE *cb, *he; |
|
|
678 | |
|
|
679 | hv_iterinit (hv); |
|
|
680 | he = hv_iternext (hv); |
|
|
681 | hv_iterinit (hv); |
|
|
682 | |
|
|
683 | // the next line creates a mortal sv each time its called. |
|
|
684 | // might want to optimise this for common cases. |
|
|
685 | cb = hv_fetch_ent (dec->cbor.cb_sk_object, hv_iterkeysv (he), 0, 0); |
|
|
686 | |
|
|
687 | if (cb) |
|
|
688 | { |
|
|
689 | dSP; |
|
|
690 | int count; |
|
|
691 | |
|
|
692 | ENTER; SAVETMPS; PUSHMARK (SP); |
|
|
693 | XPUSHs (HeVAL (he)); |
|
|
694 | sv_2mortal (sv); |
|
|
695 | |
|
|
696 | PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN; |
|
|
697 | |
|
|
698 | if (count == 1) |
|
|
699 | { |
|
|
700 | sv = newSVsv (POPs); |
|
|
701 | FREETMPS; LEAVE; |
|
|
702 | return sv; |
|
|
703 | } |
|
|
704 | |
|
|
705 | SvREFCNT_inc (sv); |
|
|
706 | FREETMPS; LEAVE; |
|
|
707 | } |
|
|
708 | } |
|
|
709 | |
|
|
710 | if (dec->cbor.cb_object) |
|
|
711 | { |
|
|
712 | dSP; |
|
|
713 | int count; |
|
|
714 | |
|
|
715 | ENTER; SAVETMPS; PUSHMARK (SP); |
|
|
716 | XPUSHs (sv_2mortal (sv)); |
|
|
717 | |
|
|
718 | PUTBACK; count = call_sv (dec->cbor.cb_object, G_ARRAY); SPAGAIN; |
|
|
719 | |
|
|
720 | if (count == 1) |
|
|
721 | { |
|
|
722 | sv = newSVsv (POPs); |
|
|
723 | FREETMPS; LEAVE; |
|
|
724 | return sv; |
|
|
725 | } |
|
|
726 | |
|
|
727 | SvREFCNT_inc (sv); |
|
|
728 | FREETMPS; LEAVE; |
|
|
729 | } |
|
|
730 | } |
|
|
731 | |
|
|
732 | return sv; |
|
|
733 | #endif |
|
|
734 | |
694 | |
735 | fail: |
695 | fail: |
736 | SvREFCNT_dec (hv); |
696 | SvREFCNT_dec (hv); |
737 | DEC_DEC_DEPTH; |
697 | DEC_DEC_DEPTH; |
738 | return &PL_sv_undef; |
698 | return &PL_sv_undef; |
739 | } |
699 | } |
740 | |
700 | |
741 | static SV * |
701 | static SV * |
742 | decode_str (dec_t *dec, int utf8) |
702 | decode_str (dec_t *dec, int utf8) |
743 | { |
703 | { |
744 | SV *sv; |
704 | SV *sv = 0; |
745 | |
705 | |
746 | if ((*dec->cur & 31) == 31) |
706 | if ((*dec->cur & 31) == 31) |
747 | { |
707 | { |
748 | ++dec->cur; |
708 | ++dec->cur; |
749 | |
709 | |
… | |
… | |
758 | { |
718 | { |
759 | ++dec->cur; |
719 | ++dec->cur; |
760 | break; |
720 | break; |
761 | } |
721 | } |
762 | |
722 | |
763 | SV *sv2 = decode_sv (dec); |
|
|
764 | sv_catsv (sv, sv2); |
723 | sv_catsv (sv, decode_sv (dec)); |
765 | } |
724 | } |
766 | } |
725 | } |
767 | else |
726 | else |
768 | { |
727 | { |
769 | STRLEN len = decode_uint (dec); |
728 | STRLEN len = decode_uint (dec); |
… | |
… | |
777 | SvUTF8_on (sv); |
736 | SvUTF8_on (sv); |
778 | |
737 | |
779 | return sv; |
738 | return sv; |
780 | |
739 | |
781 | fail: |
740 | fail: |
|
|
741 | SvREFCNT_dec (sv); |
|
|
742 | return &PL_sv_undef; |
|
|
743 | } |
|
|
744 | |
|
|
745 | static SV * |
|
|
746 | decode_tagged (dec_t *dec) |
|
|
747 | { |
|
|
748 | UV tag = decode_uint (dec); |
|
|
749 | SV *sv = decode_sv (dec); |
|
|
750 | |
|
|
751 | switch (tag) |
|
|
752 | { |
|
|
753 | case CBOR_TAG_MAGIC: |
|
|
754 | return sv; |
|
|
755 | |
|
|
756 | case CBOR_TAG_INDIRECTION: |
|
|
757 | return newRV_noinc (sv); |
|
|
758 | |
|
|
759 | case CBOR_TAG_VALUE_SHARABLE: |
|
|
760 | if (ecb_expect_false (!dec->sharable)) |
|
|
761 | dec->sharable = (AV *)sv_2mortal ((SV *)newAV ()); |
|
|
762 | |
|
|
763 | av_push (dec->sharable, SvREFCNT_inc_NN (sv)); |
|
|
764 | |
|
|
765 | return sv; |
|
|
766 | |
|
|
767 | case CBOR_TAG_VALUE_SHAREDREF: |
|
|
768 | { |
|
|
769 | // TODO: should verify that the sv atcually was a CBOR unsigned integer |
|
|
770 | UV idx = SvUV (sv); |
|
|
771 | |
|
|
772 | if (!dec->sharable || idx > AvFILLp (dec->sharable)) |
|
|
773 | ERR ("corrupted CBOR data (sharedref index out of bounds)"); |
|
|
774 | |
|
|
775 | SvREFCNT_dec (sv); |
|
|
776 | |
|
|
777 | return SvREFCNT_inc_NN (AvARRAY (dec->sharable)[idx]); |
|
|
778 | } |
|
|
779 | |
|
|
780 | case CBOR_TAG_PERL_OBJECT: |
|
|
781 | { |
|
|
782 | if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV) |
|
|
783 | ERR ("corrupted CBOR data (non-array perl object)"); |
|
|
784 | |
|
|
785 | AV *av = (AV *)SvRV (sv); |
|
|
786 | int len = av_len (av) + 1; |
|
|
787 | HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0); |
|
|
788 | |
|
|
789 | if (!stash) |
|
|
790 | ERR ("cannot decode perl-object (package does not exist)"); |
|
|
791 | |
|
|
792 | GV *method = gv_fetchmethod_autoload (stash, "THAW", 0); |
|
|
793 | |
|
|
794 | if (!method) |
|
|
795 | ERR ("cannot decode perl-object (package does not have a THAW method)"); |
|
|
796 | |
|
|
797 | dSP; |
|
|
798 | |
|
|
799 | ENTER; SAVETMPS; PUSHMARK (SP); |
|
|
800 | EXTEND (SP, len + 1); |
|
|
801 | // we re-bless the reference to get overload and other niceties right |
|
|
802 | PUSHs (*av_fetch (av, 0, 1)); |
|
|
803 | PUSHs (sv_cbor); |
|
|
804 | |
|
|
805 | int i; |
|
|
806 | |
|
|
807 | for (i = 1; i < len; ++i) |
|
|
808 | PUSHs (*av_fetch (av, i, 1)); |
|
|
809 | |
|
|
810 | PUTBACK; |
|
|
811 | call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL); |
|
|
812 | SPAGAIN; |
|
|
813 | |
|
|
814 | if (SvTRUE (ERRSV)) |
|
|
815 | { |
|
|
816 | FREETMPS; LEAVE; |
|
|
817 | ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV)))); |
|
|
818 | } |
|
|
819 | |
|
|
820 | SvREFCNT_dec (sv); |
|
|
821 | sv = SvREFCNT_inc (POPs); |
|
|
822 | |
|
|
823 | PUTBACK; |
|
|
824 | |
|
|
825 | FREETMPS; LEAVE; |
|
|
826 | |
|
|
827 | return sv; |
|
|
828 | } |
|
|
829 | |
|
|
830 | default: |
|
|
831 | { |
|
|
832 | AV *av = newAV (); |
|
|
833 | av_push (av, newSVuv (tag)); |
|
|
834 | av_push (av, sv); |
|
|
835 | |
|
|
836 | HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash |
|
|
837 | ? cbor_tagged_stash |
|
|
838 | : gv_stashpv ("CBOR::XS::Tagged" , 1); |
|
|
839 | |
|
|
840 | return sv_bless (newRV_noinc ((SV *)av), tagged_stash); |
|
|
841 | } |
|
|
842 | } |
|
|
843 | |
|
|
844 | fail: |
|
|
845 | SvREFCNT_dec (sv); |
782 | return &PL_sv_undef; |
846 | return &PL_sv_undef; |
783 | } |
847 | } |
784 | |
848 | |
785 | static SV * |
849 | static SV * |
786 | decode_sv (dec_t *dec) |
850 | decode_sv (dec_t *dec) |
… | |
… | |
788 | WANT (1); |
852 | WANT (1); |
789 | |
853 | |
790 | switch (*dec->cur >> 5) |
854 | switch (*dec->cur >> 5) |
791 | { |
855 | { |
792 | case 0: // unsigned int |
856 | case 0: // unsigned int |
793 | //TODO: 64 bit values on 3 2bit perls |
|
|
794 | return newSVuv (decode_uint (dec)); |
857 | return newSVuv (decode_uint (dec)); |
795 | case 1: // negative int |
858 | case 1: // negative int |
796 | return newSViv (-1 - (IV)decode_uint (dec)); |
859 | return newSViv (-1 - (IV)decode_uint (dec)); |
797 | case 2: // octet string |
860 | case 2: // octet string |
798 | return decode_str (dec, 0); |
861 | return decode_str (dec, 0); |
… | |
… | |
801 | case 4: // array |
864 | case 4: // array |
802 | return decode_av (dec); |
865 | return decode_av (dec); |
803 | case 5: // map |
866 | case 5: // map |
804 | return decode_hv (dec); |
867 | return decode_hv (dec); |
805 | case 6: // tag |
868 | case 6: // tag |
806 | abort (); |
869 | return decode_tagged (dec); |
807 | break; |
|
|
808 | case 7: // misc |
870 | case 7: // misc |
809 | switch (*dec->cur++ & 31) |
871 | switch (*dec->cur++ & 31) |
810 | { |
872 | { |
811 | case 20: |
873 | case 20: |
812 | #if CBOR_SLOW |
874 | #if CBOR_SLOW |
813 | cbor_false = get_bool ("CBOR::XS::false"); |
875 | types_false = get_bool ("Types::Serialiser::false"); |
814 | #endif |
876 | #endif |
815 | return newSVsv (cbor_false); |
877 | return newSVsv (types_false); |
816 | case 21: |
878 | case 21: |
817 | #if CBOR_SLOW |
879 | #if CBOR_SLOW |
818 | cbor_true = get_bool ("CBOR::XS::true"); |
880 | types_true = get_bool ("Types::Serialiser::true"); |
819 | #endif |
881 | #endif |
820 | return newSVsv (cbor_true); |
882 | return newSVsv (types_true); |
821 | case 22: |
883 | case 22: |
822 | return newSVsv (&PL_sv_undef); |
884 | return newSVsv (&PL_sv_undef); |
|
|
885 | case 23: |
|
|
886 | #if CBOR_SLOW |
|
|
887 | types_error = get_bool ("Types::Serialiser::error"); |
|
|
888 | #endif |
|
|
889 | return newSVsv (types_error); |
823 | |
890 | |
824 | case 25: |
891 | case 25: |
825 | { |
892 | { |
826 | WANT (2); |
893 | WANT (2); |
827 | |
894 | |
… | |
… | |
863 | ERR ("corrupted CBOR data (reserved/unassigned major 7 value)"); |
930 | ERR ("corrupted CBOR data (reserved/unassigned major 7 value)"); |
864 | } |
931 | } |
865 | |
932 | |
866 | break; |
933 | break; |
867 | } |
934 | } |
868 | #if 0 |
|
|
869 | switch (*dec->cur) |
|
|
870 | { |
|
|
871 | //case '"': ++dec->cur; return decode_str (dec); |
|
|
872 | case '[': ++dec->cur; return decode_av (dec); |
|
|
873 | case '{': ++dec->cur; return decode_hv (dec); |
|
|
874 | |
|
|
875 | case '-': |
|
|
876 | case '0': case '1': case '2': case '3': case '4': |
|
|
877 | case '5': case '6': case '7': case '8': case '9': |
|
|
878 | //TODO return decode_num (dec); |
|
|
879 | |
|
|
880 | case 't': |
|
|
881 | if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4)) |
|
|
882 | { |
|
|
883 | dec->cur += 4; |
|
|
884 | #if CBOR_SLOW |
|
|
885 | cbor_true = get_bool ("CBOR::XS::true"); |
|
|
886 | #endif |
|
|
887 | return newSVsv (cbor_true); |
|
|
888 | } |
|
|
889 | else |
|
|
890 | ERR ("'true' expected"); |
|
|
891 | |
|
|
892 | break; |
|
|
893 | |
|
|
894 | case 'f': |
|
|
895 | if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5)) |
|
|
896 | { |
|
|
897 | dec->cur += 5; |
|
|
898 | #if CBOR_SLOW |
|
|
899 | cbor_false = get_bool ("CBOR::XS::false"); |
|
|
900 | #endif |
|
|
901 | return newSVsv (cbor_false); |
|
|
902 | } |
|
|
903 | else |
|
|
904 | ERR ("'false' expected"); |
|
|
905 | |
|
|
906 | break; |
|
|
907 | |
|
|
908 | case 'n': |
|
|
909 | if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4)) |
|
|
910 | { |
|
|
911 | dec->cur += 4; |
|
|
912 | return newSVsv (&PL_sv_undef); |
|
|
913 | } |
|
|
914 | else |
|
|
915 | ERR ("'null' expected"); |
|
|
916 | |
|
|
917 | break; |
|
|
918 | |
|
|
919 | default: |
|
|
920 | ERR ("malformed CBOR string, neither array, object, number, string or atom"); |
|
|
921 | break; |
|
|
922 | } |
|
|
923 | #endif |
|
|
924 | |
935 | |
925 | fail: |
936 | fail: |
926 | return &PL_sv_undef; |
937 | return &PL_sv_undef; |
927 | } |
938 | } |
928 | |
939 | |
929 | static SV * |
940 | static SV * |
930 | decode_cbor (SV *string, CBOR *cbor, char **offset_return) |
941 | decode_cbor (SV *string, CBOR *cbor, char **offset_return) |
931 | { |
942 | { |
932 | dec_t dec; |
943 | dec_t dec = { }; |
933 | SV *sv; |
944 | SV *sv; |
|
|
945 | STRLEN len; |
|
|
946 | char *data = SvPVbyte (string, len); |
934 | |
947 | |
935 | /* work around bugs in 5.10 where manipulating magic values |
|
|
936 | * makes perl ignore the magic in subsequent accesses. |
|
|
937 | * also make a copy of non-PV values, to get them into a clean |
|
|
938 | * state (SvPV should do that, but it's buggy, see below). |
|
|
939 | */ |
|
|
940 | /*SvGETMAGIC (string);*/ |
|
|
941 | if (SvMAGICAL (string) || !SvPOK (string)) |
|
|
942 | string = sv_2mortal (newSVsv (string)); |
|
|
943 | |
|
|
944 | SvUPGRADE (string, SVt_PV); |
|
|
945 | |
|
|
946 | /* work around a bug in perl 5.10, which causes SvCUR to fail an |
|
|
947 | * assertion with -DDEBUGGING, although SvCUR is documented to |
|
|
948 | * return the xpv_cur field which certainly exists after upgrading. |
|
|
949 | * according to nicholas clark, calling SvPOK fixes this. |
|
|
950 | * But it doesn't fix it, so try another workaround, call SvPV_nolen |
|
|
951 | * and hope for the best. |
|
|
952 | * Damnit, SvPV_nolen still trips over yet another assertion. This |
|
|
953 | * assertion business is seriously broken, try yet another workaround |
|
|
954 | * for the broken -DDEBUGGING. |
|
|
955 | */ |
|
|
956 | { |
|
|
957 | #ifdef DEBUGGING |
|
|
958 | STRLEN offset = SvOK (string) ? sv_len (string) : 0; |
|
|
959 | #else |
|
|
960 | STRLEN offset = SvCUR (string); |
|
|
961 | #endif |
|
|
962 | |
|
|
963 | if (offset > cbor->max_size && cbor->max_size) |
948 | if (len > cbor->max_size && cbor->max_size) |
964 | croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu", |
949 | croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu", |
965 | (unsigned long)SvCUR (string), (unsigned long)cbor->max_size); |
950 | (unsigned long)len, (unsigned long)cbor->max_size); |
966 | } |
|
|
967 | |
|
|
968 | sv_utf8_downgrade (string, 0); |
|
|
969 | |
951 | |
970 | dec.cbor = *cbor; |
952 | dec.cbor = *cbor; |
971 | dec.cur = (U8 *)SvPVX (string); |
953 | dec.cur = (U8 *)data; |
972 | dec.end = (U8 *)SvEND (string); |
954 | dec.end = (U8 *)data + len; |
973 | dec.err = 0; |
|
|
974 | dec.depth = 0; |
|
|
975 | |
|
|
976 | if (dec.cbor.cb_object || dec.cbor.cb_sk_object) |
|
|
977 | ;//TODO dec.cbor.flags |= F_HOOK; |
|
|
978 | |
955 | |
979 | sv = decode_sv (&dec); |
956 | sv = decode_sv (&dec); |
980 | |
957 | |
981 | if (offset_return) |
958 | if (offset_return) |
982 | *offset_return = dec.cur; |
959 | *offset_return = dec.cur; |
… | |
… | |
986 | dec.err = "garbage after CBOR object"; |
963 | dec.err = "garbage after CBOR object"; |
987 | |
964 | |
988 | if (dec.err) |
965 | if (dec.err) |
989 | { |
966 | { |
990 | SvREFCNT_dec (sv); |
967 | SvREFCNT_dec (sv); |
991 | croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (int)(uint8_t)*dec.cur); |
968 | croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur); |
992 | } |
969 | } |
993 | |
970 | |
994 | sv = sv_2mortal (sv); |
971 | sv = sv_2mortal (sv); |
995 | |
972 | |
996 | return sv; |
973 | return sv; |
… | |
… | |
1002 | MODULE = CBOR::XS PACKAGE = CBOR::XS |
979 | MODULE = CBOR::XS PACKAGE = CBOR::XS |
1003 | |
980 | |
1004 | BOOT: |
981 | BOOT: |
1005 | { |
982 | { |
1006 | cbor_stash = gv_stashpv ("CBOR::XS" , 1); |
983 | cbor_stash = gv_stashpv ("CBOR::XS" , 1); |
1007 | cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1); |
984 | cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1); |
1008 | |
985 | |
1009 | cbor_true = get_bool ("CBOR::XS::true"); |
986 | types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1); |
1010 | cbor_false = get_bool ("CBOR::XS::false"); |
987 | types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1); |
|
|
988 | |
|
|
989 | types_true = get_bool ("Types::Serialiser::true" ); |
|
|
990 | types_false = get_bool ("Types::Serialiser::false"); |
|
|
991 | types_error = get_bool ("Types::Serialiser::error"); |
|
|
992 | |
|
|
993 | sv_cbor = newSVpv ("CBOR", 0); |
|
|
994 | SvREADONLY_on (sv_cbor); |
1011 | } |
995 | } |
1012 | |
996 | |
1013 | PROTOTYPES: DISABLE |
997 | PROTOTYPES: DISABLE |
1014 | |
998 | |
1015 | void CLONE (...) |
999 | void CLONE (...) |
1016 | CODE: |
1000 | CODE: |
1017 | cbor_stash = 0; |
1001 | cbor_stash = 0; |
|
|
1002 | cbor_tagged_stash = 0; |
|
|
1003 | types_error_stash = 0; |
1018 | cbor_boolean_stash = 0; |
1004 | types_boolean_stash = 0; |
1019 | |
1005 | |
1020 | void new (char *klass) |
1006 | void new (char *klass) |
1021 | PPCODE: |
1007 | PPCODE: |
1022 | { |
1008 | { |
1023 | SV *pv = NEWSV (0, sizeof (CBOR)); |
1009 | SV *pv = NEWSV (0, sizeof (CBOR)); |
… | |
… | |
1031 | |
1017 | |
1032 | void shrink (CBOR *self, int enable = 1) |
1018 | void shrink (CBOR *self, int enable = 1) |
1033 | ALIAS: |
1019 | ALIAS: |
1034 | shrink = F_SHRINK |
1020 | shrink = F_SHRINK |
1035 | allow_unknown = F_ALLOW_UNKNOWN |
1021 | allow_unknown = F_ALLOW_UNKNOWN |
|
|
1022 | allow_sharing = F_ALLOW_SHARING |
|
|
1023 | dedup_keys = F_DEDUP_KEYS |
|
|
1024 | dedup_strings = F_DEDUP_STRINGS |
1036 | PPCODE: |
1025 | PPCODE: |
1037 | { |
1026 | { |
1038 | if (enable) |
1027 | if (enable) |
1039 | self->flags |= ix; |
1028 | self->flags |= ix; |
1040 | else |
1029 | else |
… | |
… | |
1045 | |
1034 | |
1046 | void get_shrink (CBOR *self) |
1035 | void get_shrink (CBOR *self) |
1047 | ALIAS: |
1036 | ALIAS: |
1048 | get_shrink = F_SHRINK |
1037 | get_shrink = F_SHRINK |
1049 | get_allow_unknown = F_ALLOW_UNKNOWN |
1038 | get_allow_unknown = F_ALLOW_UNKNOWN |
|
|
1039 | get_allow_sharing = F_ALLOW_SHARING |
|
|
1040 | get_dedup_keys = F_DEDUP_KEYS |
|
|
1041 | get_dedup_strings = F_DEDUP_STRINGS |
1050 | PPCODE: |
1042 | PPCODE: |
1051 | XPUSHs (boolSV (self->flags & ix)); |
1043 | XPUSHs (boolSV (self->flags & ix)); |
1052 | |
1044 | |
1053 | void max_depth (CBOR *self, U32 max_depth = 0x80000000UL) |
1045 | void max_depth (CBOR *self, U32 max_depth = 0x80000000UL) |
1054 | PPCODE: |
1046 | PPCODE: |
… | |
… | |
1069 | int get_max_size (CBOR *self) |
1061 | int get_max_size (CBOR *self) |
1070 | CODE: |
1062 | CODE: |
1071 | RETVAL = self->max_size; |
1063 | RETVAL = self->max_size; |
1072 | OUTPUT: |
1064 | OUTPUT: |
1073 | RETVAL |
1065 | RETVAL |
1074 | |
|
|
1075 | #if 0 //TODO |
|
|
1076 | |
|
|
1077 | void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef) |
|
|
1078 | PPCODE: |
|
|
1079 | { |
|
|
1080 | SvREFCNT_dec (self->cb_object); |
|
|
1081 | self->cb_object = SvOK (cb) ? newSVsv (cb) : 0; |
|
|
1082 | |
|
|
1083 | XPUSHs (ST (0)); |
|
|
1084 | } |
|
|
1085 | |
|
|
1086 | void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef) |
|
|
1087 | PPCODE: |
|
|
1088 | { |
|
|
1089 | if (!self->cb_sk_object) |
|
|
1090 | self->cb_sk_object = newHV (); |
|
|
1091 | |
|
|
1092 | if (SvOK (cb)) |
|
|
1093 | hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0); |
|
|
1094 | else |
|
|
1095 | { |
|
|
1096 | hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0); |
|
|
1097 | |
|
|
1098 | if (!HvKEYS (self->cb_sk_object)) |
|
|
1099 | { |
|
|
1100 | SvREFCNT_dec (self->cb_sk_object); |
|
|
1101 | self->cb_sk_object = 0; |
|
|
1102 | } |
|
|
1103 | } |
|
|
1104 | |
|
|
1105 | XPUSHs (ST (0)); |
|
|
1106 | } |
|
|
1107 | |
|
|
1108 | #endif |
|
|
1109 | |
1066 | |
1110 | void encode (CBOR *self, SV *scalar) |
1067 | void encode (CBOR *self, SV *scalar) |
1111 | PPCODE: |
1068 | PPCODE: |
1112 | PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN; |
1069 | PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN; |
1113 | XPUSHs (scalar); |
1070 | XPUSHs (scalar); |
… | |
… | |
1126 | EXTEND (SP, 2); |
1083 | EXTEND (SP, 2); |
1127 | PUSHs (sv); |
1084 | PUSHs (sv); |
1128 | PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr)))); |
1085 | PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr)))); |
1129 | } |
1086 | } |
1130 | |
1087 | |
1131 | void DESTROY (CBOR *self) |
|
|
1132 | CODE: |
|
|
1133 | SvREFCNT_dec (self->cb_sk_object); |
|
|
1134 | SvREFCNT_dec (self->cb_object); |
|
|
1135 | |
|
|
1136 | PROTOTYPES: ENABLE |
1088 | PROTOTYPES: ENABLE |
1137 | |
1089 | |
1138 | void encode_cbor (SV *scalar) |
1090 | void encode_cbor (SV *scalar) |
1139 | PPCODE: |
1091 | PPCODE: |
1140 | { |
1092 | { |