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6 | #include <string.h> |
6 | #include <string.h> |
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> |
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11 | #include <inttypes.h> |
11 | |
12 | |
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13 | #define ECB_NO_THREADS 1 |
12 | #include "ecb.h" |
14 | #include "ecb.h" |
13 | |
15 | |
14 | #if defined(__BORLANDC__) || defined(_MSC_VER) |
16 | // compatibility with perl <5.18 |
15 | # define snprintf _snprintf // C compilers have this in stdio.h |
17 | #ifndef HvNAMELEN_get |
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18 | # define HvNAMELEN_get(hv) strlen (HvNAME (hv)) |
16 | #endif |
19 | #endif |
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20 | #ifndef HvNAMELEN |
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21 | # define HvNAMELEN(hv) HvNAMELEN_get (hv) |
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22 | #endif |
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23 | #ifndef HvNAMEUTF8 |
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24 | # define HvNAMEUTF8(hv) 0 |
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25 | #endif |
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26 | #ifndef SvREFCNT_inc_NN |
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27 | # define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv) |
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28 | #endif |
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29 | #ifndef SvREFCNT_dec_NN |
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30 | # define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv) |
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31 | #endif |
17 | |
32 | |
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33 | // perl's is_utf8_string interprets len=0 as "calculate len", but we want it to mean 0 |
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34 | #define cbor_is_utf8_string(str,len) (!(len) || is_utf8_string ((str), (len))) |
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35 | |
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36 | // known major and minor types |
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37 | enum cbor_type |
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38 | { |
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39 | MAJOR_SHIFT = 5, |
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40 | MINOR_MASK = 0x1f, |
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41 | |
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42 | MAJOR_POS_INT = 0 << MAJOR_SHIFT, |
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43 | MAJOR_NEG_INT = 1 << MAJOR_SHIFT, |
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44 | MAJOR_BYTES = 2 << MAJOR_SHIFT, |
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45 | MAJOR_TEXT = 3 << MAJOR_SHIFT, |
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46 | MAJOR_ARRAY = 4 << MAJOR_SHIFT, |
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47 | MAJOR_MAP = 5 << MAJOR_SHIFT, |
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48 | MAJOR_TAG = 6 << MAJOR_SHIFT, |
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49 | MAJOR_MISC = 7 << MAJOR_SHIFT, |
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50 | |
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51 | // INT/STRING/ARRAY/MAP subtypes |
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52 | LENGTH_EXT1 = 24, |
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53 | LENGTH_EXT2 = 25, |
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54 | LENGTH_EXT4 = 26, |
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55 | LENGTH_EXT8 = 27, |
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56 | |
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57 | // SIMPLE types (effectively MISC subtypes) |
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58 | SIMPLE_FALSE = 20, |
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59 | SIMPLE_TRUE = 21, |
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60 | SIMPLE_NULL = 22, |
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61 | SIMPLE_UNDEF = 23, |
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62 | |
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63 | // MISC subtype (unused) |
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64 | MISC_EXT1 = 24, |
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65 | MISC_FLOAT16 = 25, |
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66 | MISC_FLOAT32 = 26, |
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67 | MISC_FLOAT64 = 27, |
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68 | |
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69 | // BYTES/TEXT/ARRAY/MAP |
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70 | MINOR_INDEF = 31, |
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71 | }; |
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72 | |
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73 | // known tags |
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74 | enum cbor_tag |
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75 | { |
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76 | // extensions |
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77 | CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref |
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78 | CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object |
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79 | CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object |
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80 | CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing |
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81 | CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing |
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82 | CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref |
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83 | CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection |
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84 | |
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85 | // rfc7049 |
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86 | CBOR_TAG_DATETIME = 0, // rfc4287, utf-8 |
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87 | CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any |
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88 | CBOR_TAG_POS_BIGNUM = 2, // byte string |
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89 | CBOR_TAG_NEG_BIGNUM = 3, // byte string |
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90 | CBOR_TAG_DECIMAL = 4, // decimal fraction, array |
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91 | CBOR_TAG_BIGFLOAT = 5, // array |
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92 | |
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93 | CBOR_TAG_CONV_B64U = 21, // base64url, any |
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94 | CBOR_TAG_CONV_B64 = 22, // base64, any |
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95 | CBOR_TAG_CONV_HEX = 23, // base16, any |
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96 | CBOR_TAG_CBOR = 24, // embedded cbor, byte string |
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97 | |
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98 | CBOR_TAG_URI = 32, // URI rfc3986, utf-8 |
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99 | CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8 |
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100 | CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8 |
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101 | CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8 |
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102 | CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8 |
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103 | |
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104 | CBOR_TAG_MAGIC = 55799, // self-describe cbor |
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105 | }; |
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106 | |
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107 | // known forced types, also hardcoded in CBOR.pm |
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108 | enum |
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109 | { |
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110 | AS_CBOR = 0, |
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111 | AS_INT = 1, |
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112 | AS_BYTES = 2, |
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113 | AS_TEXT = 3, |
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114 | AS_FLOAT16 = 4, |
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115 | AS_FLOAT32 = 5, |
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116 | AS_FLOAT64 = 6, |
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117 | AS_MAP = 7, |
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118 | // possibly future enhancements: (generic) float, (generic) string |
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119 | }; |
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120 | |
18 | #define F_SHRINK 0x00000200UL |
121 | #define F_SHRINK 0x00000001UL |
19 | #define F_ALLOW_UNKNOWN 0x00002000UL |
122 | #define F_ALLOW_UNKNOWN 0x00000002UL |
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123 | #define F_ALLOW_SHARING 0x00000004UL |
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124 | #define F_ALLOW_CYCLES 0x00000008UL |
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125 | #define F_FORBID_OBJECTS 0x00000010UL |
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126 | #define F_PACK_STRINGS 0x00000020UL |
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127 | #define F_TEXT_KEYS 0x00000040UL |
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128 | #define F_TEXT_STRINGS 0x00000080UL |
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129 | #define F_VALIDATE_UTF8 0x00000100UL |
20 | |
130 | |
21 | #define INIT_SIZE 32 // initial scalar size to be allocated |
131 | #define INIT_SIZE 32 // initial scalar size to be allocated |
22 | |
132 | |
23 | #define SB do { |
133 | #define SB do { |
24 | #define SE } while (0) |
134 | #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 | |
135 | |
37 | #define IN_RANGE_INC(type,val,beg,end) \ |
136 | #define IN_RANGE_INC(type,val,beg,end) \ |
38 | ((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \ |
137 | ((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \ |
39 | <= (unsigned type)((unsigned type)(end) - (unsigned type)(beg))) |
138 | <= (unsigned type)((unsigned type)(end) - (unsigned type)(beg))) |
40 | |
139 | |
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46 | #else |
145 | #else |
47 | # define CBOR_SLOW 0 |
146 | # define CBOR_SLOW 0 |
48 | # define CBOR_STASH cbor_stash |
147 | # define CBOR_STASH cbor_stash |
49 | #endif |
148 | #endif |
50 | |
149 | |
51 | static HV *cbor_stash, *cbor_boolean_stash; // CBOR::XS:: |
150 | static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS:: |
52 | static SV *cbor_true, *cbor_false; |
151 | static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter; |
53 | |
152 | |
54 | typedef struct { |
153 | typedef struct { |
55 | U32 flags; |
154 | U32 flags; |
56 | U32 max_depth; |
155 | U32 max_depth; |
57 | STRLEN max_size; |
156 | STRLEN max_size; |
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157 | SV *filter; |
58 | |
158 | |
59 | SV *cb_object; |
159 | // for the incremental parser |
60 | HV *cb_sk_object; |
160 | STRLEN incr_pos; // the current offset into the text |
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161 | STRLEN incr_need; // minimum bytes needed to decode |
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162 | AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef. |
61 | } CBOR; |
163 | } CBOR; |
62 | |
164 | |
63 | INLINE void |
165 | ecb_inline void |
64 | cbor_init (CBOR *cbor) |
166 | cbor_init (CBOR *cbor) |
65 | { |
167 | { |
66 | Zero (cbor, 1, CBOR); |
168 | Zero (cbor, 1, CBOR); |
67 | cbor->max_depth = 512; |
169 | cbor->max_depth = 512; |
68 | } |
170 | } |
69 | |
171 | |
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172 | ecb_inline void |
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173 | cbor_free (CBOR *cbor) |
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174 | { |
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175 | SvREFCNT_dec (cbor->filter); |
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176 | SvREFCNT_dec (cbor->incr_count); |
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177 | } |
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178 | |
70 | ///////////////////////////////////////////////////////////////////////////// |
179 | ///////////////////////////////////////////////////////////////////////////// |
71 | // utility functions |
180 | // utility functions |
72 | |
181 | |
73 | INLINE SV * |
182 | ecb_inline SV * |
74 | get_bool (const char *name) |
183 | get_bool (const char *name) |
75 | { |
184 | { |
76 | SV *sv = get_sv (name, 1); |
185 | SV *sv = get_sv (name, 1); |
77 | |
186 | |
78 | SvREADONLY_on (sv); |
187 | SvREADONLY_on (sv); |
79 | SvREADONLY_on (SvRV (sv)); |
188 | SvREADONLY_on (SvRV (sv)); |
80 | |
189 | |
81 | return sv; |
190 | return sv; |
82 | } |
191 | } |
83 | |
192 | |
84 | INLINE void |
193 | ecb_inline void |
85 | shrink (SV *sv) |
194 | shrink (SV *sv) |
86 | { |
195 | { |
87 | sv_utf8_downgrade (sv, 1); |
196 | sv_utf8_downgrade (sv, 1); |
88 | |
197 | |
89 | if (SvLEN (sv) > SvCUR (sv) + 1) |
198 | if (SvLEN (sv) > SvCUR (sv) + 1) |
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94 | SvPV_renew (sv, SvCUR (sv) + 1); |
203 | SvPV_renew (sv, SvCUR (sv) + 1); |
95 | #endif |
204 | #endif |
96 | } |
205 | } |
97 | } |
206 | } |
98 | |
207 | |
99 | ///////////////////////////////////////////////////////////////////////////// |
208 | // minimum length of a string to be registered for stringref |
100 | // fp hell |
209 | ecb_inline STRLEN |
101 | |
210 | minimum_string_length (UV idx) |
102 | //TODO |
211 | { |
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212 | return idx <= 23 ? 3 |
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213 | : idx <= 0xffU ? 4 |
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214 | : idx <= 0xffffU ? 5 |
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215 | : idx <= 0xffffffffU ? 7 |
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216 | : 11; |
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217 | } |
103 | |
218 | |
104 | ///////////////////////////////////////////////////////////////////////////// |
219 | ///////////////////////////////////////////////////////////////////////////// |
105 | // encoder |
220 | // encoder |
106 | |
221 | |
107 | // structure used for encoding CBOR |
222 | // structure used for encoding CBOR |
… | |
… | |
110 | char *cur; // SvPVX (sv) + current output position |
225 | char *cur; // SvPVX (sv) + current output position |
111 | char *end; // SvEND (sv) |
226 | char *end; // SvEND (sv) |
112 | SV *sv; // result scalar |
227 | SV *sv; // result scalar |
113 | CBOR cbor; |
228 | CBOR cbor; |
114 | U32 depth; // recursion level |
229 | U32 depth; // recursion level |
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230 | HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8) |
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231 | UV stringref_idx; |
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232 | HV *shareable; // ptr => index, or 0 |
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233 | UV shareable_idx; |
115 | } enc_t; |
234 | } enc_t; |
116 | |
235 | |
117 | INLINE void |
236 | ecb_inline void |
118 | need (enc_t *enc, STRLEN len) |
237 | need (enc_t *enc, STRLEN len) |
119 | { |
238 | { |
120 | if (expect_false (enc->cur + len >= enc->end)) |
239 | if (ecb_expect_false ((uintptr_t)(enc->end - enc->cur) < len)) |
121 | { |
240 | { |
122 | STRLEN cur = enc->cur - (char *)SvPVX (enc->sv); |
241 | STRLEN cur = enc->cur - (char *)SvPVX (enc->sv); |
123 | SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1); |
242 | SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1); |
124 | enc->cur = SvPVX (enc->sv) + cur; |
243 | enc->cur = SvPVX (enc->sv) + cur; |
125 | enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1; |
244 | enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1; |
126 | } |
245 | } |
127 | } |
246 | } |
128 | |
247 | |
129 | INLINE void |
248 | static void encode_sv (enc_t *enc, SV *sv); |
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249 | |
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250 | ecb_inline void |
130 | encode_ch (enc_t *enc, char ch) |
251 | encode_ch (enc_t *enc, char ch) |
131 | { |
252 | { |
132 | need (enc, 1); |
253 | need (enc, 1); |
133 | *enc->cur++ = ch; |
254 | *enc->cur++ = ch; |
134 | } |
255 | } |
135 | |
256 | |
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257 | // used for tags, intregers, element counts and so on |
136 | static void |
258 | static void |
137 | encode_uint (enc_t *enc, int major, UV len) |
259 | encode_uint (enc_t *enc, int major, UV len) |
138 | { |
260 | { |
139 | need (enc, 9); |
261 | need (enc, 9); |
140 | |
262 | |
141 | if (len < 24) |
263 | if (ecb_expect_true (len < LENGTH_EXT1)) |
142 | *enc->cur++ = major | len; |
264 | *enc->cur++ = major | len; |
143 | else if (len < 0x100) |
265 | else if (ecb_expect_true (len <= 0xffU)) |
144 | { |
266 | { |
145 | *enc->cur++ = major | 24; |
267 | *enc->cur++ = major | LENGTH_EXT1; |
146 | *enc->cur++ = len; |
268 | *enc->cur++ = len; |
147 | } |
269 | } |
148 | else if (len < 0x10000) |
270 | else if (len <= 0xffffU) |
149 | { |
271 | { |
150 | *enc->cur++ = major | 25; |
272 | *enc->cur++ = major | LENGTH_EXT2; |
151 | *enc->cur++ = len >> 8; |
273 | *enc->cur++ = len >> 8; |
152 | *enc->cur++ = len; |
274 | *enc->cur++ = len; |
153 | } |
275 | } |
154 | else if (len < 0x100000000) |
276 | else if (len <= 0xffffffffU) |
155 | { |
277 | { |
156 | *enc->cur++ = major | 26; |
278 | *enc->cur++ = major | LENGTH_EXT4; |
157 | *enc->cur++ = len >> 24; |
279 | *enc->cur++ = len >> 24; |
158 | *enc->cur++ = len >> 16; |
280 | *enc->cur++ = len >> 16; |
159 | *enc->cur++ = len >> 8; |
281 | *enc->cur++ = len >> 8; |
160 | *enc->cur++ = len; |
282 | *enc->cur++ = len; |
161 | } |
283 | } |
162 | else if (len) |
284 | else |
163 | { |
285 | { |
164 | *enc->cur++ = major | 27; |
286 | *enc->cur++ = major | LENGTH_EXT8; |
165 | *enc->cur++ = len >> 56; |
287 | *enc->cur++ = len >> 56; |
166 | *enc->cur++ = len >> 48; |
288 | *enc->cur++ = len >> 48; |
167 | *enc->cur++ = len >> 40; |
289 | *enc->cur++ = len >> 40; |
168 | *enc->cur++ = len >> 32; |
290 | *enc->cur++ = len >> 32; |
169 | *enc->cur++ = len >> 24; |
291 | *enc->cur++ = len >> 24; |
… | |
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171 | *enc->cur++ = len >> 8; |
293 | *enc->cur++ = len >> 8; |
172 | *enc->cur++ = len; |
294 | *enc->cur++ = len; |
173 | } |
295 | } |
174 | } |
296 | } |
175 | |
297 | |
176 | static void |
298 | // encodes a perl value into a CBOR integer |
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299 | ecb_inline void |
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300 | encode_int (enc_t *enc, SV *sv) |
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301 | { |
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302 | if (SvIsUV (sv)) |
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303 | encode_uint (enc, MAJOR_POS_INT, SvUVX (sv)); |
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304 | else if (SvIVX (sv) >= 0) |
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305 | encode_uint (enc, MAJOR_POS_INT, SvIVX (sv)); |
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306 | else |
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307 | encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1)); |
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308 | } |
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309 | |
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310 | ecb_inline void |
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311 | encode_tag (enc_t *enc, UV tag) |
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312 | { |
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313 | encode_uint (enc, MAJOR_TAG, tag); |
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314 | } |
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315 | |
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316 | // exceptional (hopefully) slow path for byte strings that need to be utf8-encoded |
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317 | ecb_noinline static void |
177 | encode_str (enc_t *enc, int utf8, char *str, STRLEN len) |
318 | encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len) |
178 | { |
319 | { |
179 | encode_uint (enc, utf8 ? 0x60 : 0x40, len); |
320 | STRLEN ulen = len; |
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321 | U8 *p, *pend = (U8 *)str + len; |
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322 | |
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323 | for (p = (U8 *)str; p < pend; ++p) |
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324 | ulen += *p >> 7; // count set high bits |
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325 | |
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326 | encode_uint (enc, MAJOR_TEXT, ulen); |
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327 | |
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328 | need (enc, ulen); |
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329 | for (p = (U8 *)str; p < pend; ++p) |
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330 | if (*p < 0x80) |
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331 | *enc->cur++ = *p; |
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332 | else |
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333 | { |
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334 | *enc->cur++ = 0xc0 + (*p >> 6); |
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335 | *enc->cur++ = 0x80 + (*p & 63); |
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336 | } |
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337 | } |
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338 | |
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339 | ecb_inline void |
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340 | encode_str (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len) |
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341 | { |
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342 | if (ecb_expect_false (upgrade_utf8)) |
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343 | if (!utf8) |
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344 | { |
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345 | encode_str_utf8 (enc, utf8, str, len); |
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346 | return; |
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347 | } |
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348 | |
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349 | encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len); |
180 | need (enc, len); |
350 | need (enc, len); |
181 | memcpy (enc->cur, str, len); |
351 | memcpy (enc->cur, str, len); |
182 | enc->cur += len; |
352 | enc->cur += len; |
183 | } |
353 | } |
184 | |
354 | |
185 | static void encode_sv (enc_t *enc, SV *sv); |
355 | ecb_inline void |
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356 | encode_strref (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len) |
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357 | { |
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358 | if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS)) |
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359 | { |
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360 | SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1); |
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361 | |
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362 | if (SvOK (*svp)) |
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363 | { |
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364 | // already registered, use stringref |
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365 | encode_tag (enc, CBOR_TAG_STRINGREF); |
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366 | encode_uint (enc, MAJOR_POS_INT, SvUV (*svp)); |
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367 | return; |
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368 | } |
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369 | else if (len >= minimum_string_length (enc->stringref_idx)) |
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370 | { |
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371 | // register only |
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372 | sv_setuv (*svp, enc->stringref_idx); |
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373 | ++enc->stringref_idx; |
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374 | } |
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375 | } |
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376 | |
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377 | encode_str (enc, upgrade_utf8, utf8, str, len); |
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378 | } |
|
|
379 | |
|
|
380 | ecb_inline void |
|
|
381 | encode_float16 (enc_t *enc, NV nv) |
|
|
382 | { |
|
|
383 | need (enc, 1+2); |
|
|
384 | |
|
|
385 | *enc->cur++ = MAJOR_MISC | MISC_FLOAT16; |
|
|
386 | |
|
|
387 | uint16_t fp = ecb_float_to_binary16 (nv); |
|
|
388 | |
|
|
389 | if (!ecb_big_endian ()) |
|
|
390 | fp = ecb_bswap16 (fp); |
|
|
391 | |
|
|
392 | memcpy (enc->cur, &fp, 2); |
|
|
393 | enc->cur += 2; |
|
|
394 | } |
|
|
395 | |
|
|
396 | ecb_inline void |
|
|
397 | encode_float32 (enc_t *enc, NV nv) |
|
|
398 | { |
|
|
399 | need (enc, 1+4); |
|
|
400 | |
|
|
401 | *enc->cur++ = MAJOR_MISC | MISC_FLOAT32; |
|
|
402 | |
|
|
403 | uint32_t fp = ecb_float_to_binary32 (nv); |
|
|
404 | |
|
|
405 | if (!ecb_big_endian ()) |
|
|
406 | fp = ecb_bswap32 (fp); |
|
|
407 | |
|
|
408 | memcpy (enc->cur, &fp, 4); |
|
|
409 | enc->cur += 4; |
|
|
410 | } |
|
|
411 | |
|
|
412 | ecb_inline void |
|
|
413 | encode_float64 (enc_t *enc, NV nv) |
|
|
414 | { |
|
|
415 | need (enc, 1+8); |
|
|
416 | |
|
|
417 | *enc->cur++ = MAJOR_MISC | MISC_FLOAT64; |
|
|
418 | |
|
|
419 | uint64_t fp = ecb_double_to_binary64 (nv); |
|
|
420 | |
|
|
421 | if (!ecb_big_endian ()) |
|
|
422 | fp = ecb_bswap64 (fp); |
|
|
423 | |
|
|
424 | memcpy (enc->cur, &fp, 8); |
|
|
425 | enc->cur += 8; |
|
|
426 | } |
|
|
427 | |
|
|
428 | ecb_inline void |
|
|
429 | encode_bool (enc_t *enc, int istrue) |
|
|
430 | { |
|
|
431 | encode_ch (enc, istrue ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE); |
|
|
432 | } |
|
|
433 | |
|
|
434 | // encodes an arrayref containing key-value pairs as CBOR map |
|
|
435 | ecb_inline void |
|
|
436 | encode_array_as_map (enc_t *enc, SV *sv) |
|
|
437 | { |
|
|
438 | if (enc->depth >= enc->cbor.max_depth) |
|
|
439 | croak (ERR_NESTING_EXCEEDED); |
|
|
440 | |
|
|
441 | ++enc->depth; |
|
|
442 | |
|
|
443 | // as_map does error checking for us, but we re-check in case |
|
|
444 | // things have changed. |
|
|
445 | |
|
|
446 | if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV) |
|
|
447 | croak ("CBOR::XS::as_map requires an array reference (did you change the array after calling as_map?)"); |
|
|
448 | |
|
|
449 | AV *av = (AV *)SvRV (sv); |
|
|
450 | int i, len = av_len (av); |
|
|
451 | |
|
|
452 | if (!(len & 1)) |
|
|
453 | croak ("CBOR::XS::as_map requires an even number of elements (did you change the array after calling as_map?)"); |
|
|
454 | |
|
|
455 | encode_uint (enc, MAJOR_MAP, (len + 1) >> 1); |
|
|
456 | |
|
|
457 | for (i = 0; i <= len; ++i) |
|
|
458 | { |
|
|
459 | SV **svp = av_fetch (av, i, 0); |
|
|
460 | encode_sv (enc, svp ? *svp : &PL_sv_undef); |
|
|
461 | } |
|
|
462 | |
|
|
463 | --enc->depth; |
|
|
464 | } |
|
|
465 | |
|
|
466 | ecb_inline void |
|
|
467 | encode_forced (enc_t *enc, UV type, SV *sv) |
|
|
468 | { |
|
|
469 | switch (type) |
|
|
470 | { |
|
|
471 | case AS_CBOR: |
|
|
472 | { |
|
|
473 | STRLEN len; |
|
|
474 | char *str = SvPVbyte (sv, len); |
|
|
475 | |
|
|
476 | need (enc, len); |
|
|
477 | memcpy (enc->cur, str, len); |
|
|
478 | enc->cur += len; |
|
|
479 | } |
|
|
480 | break; |
|
|
481 | |
|
|
482 | case AS_BYTES: |
|
|
483 | { |
|
|
484 | STRLEN len; |
|
|
485 | char *str = SvPVbyte (sv, len); |
|
|
486 | encode_strref (enc, 0, 0, str, len); |
|
|
487 | } |
|
|
488 | break; |
|
|
489 | |
|
|
490 | case AS_TEXT: |
|
|
491 | { |
|
|
492 | STRLEN len; |
|
|
493 | char *str = SvPVutf8 (sv, len); |
|
|
494 | encode_strref (enc, 1, 1, str, len); |
|
|
495 | } |
|
|
496 | break; |
|
|
497 | |
|
|
498 | case AS_INT: encode_int (enc, sv); break; |
|
|
499 | |
|
|
500 | case AS_FLOAT16: encode_float16 (enc, SvNV (sv)); break; |
|
|
501 | case AS_FLOAT32: encode_float32 (enc, SvNV (sv)); break; |
|
|
502 | case AS_FLOAT64: encode_float64 (enc, SvNV (sv)); break; |
|
|
503 | |
|
|
504 | case AS_MAP: encode_array_as_map (enc, sv); break; |
|
|
505 | |
|
|
506 | default: |
|
|
507 | croak ("encountered malformed CBOR::XS::Tagged object"); |
|
|
508 | } |
|
|
509 | } |
186 | |
510 | |
187 | static void |
511 | static void |
188 | encode_av (enc_t *enc, AV *av) |
512 | encode_av (enc_t *enc, AV *av) |
189 | { |
513 | { |
190 | int i, len = av_len (av); |
514 | int i, len = av_len (av); |
… | |
… | |
192 | if (enc->depth >= enc->cbor.max_depth) |
516 | if (enc->depth >= enc->cbor.max_depth) |
193 | croak (ERR_NESTING_EXCEEDED); |
517 | croak (ERR_NESTING_EXCEEDED); |
194 | |
518 | |
195 | ++enc->depth; |
519 | ++enc->depth; |
196 | |
520 | |
197 | encode_uint (enc, 0x80, len + 1); |
521 | encode_uint (enc, MAJOR_ARRAY, len + 1); |
198 | |
522 | |
|
|
523 | if (ecb_expect_false (SvMAGICAL (av))) |
199 | for (i = 0; i <= len; ++i) |
524 | for (i = 0; i <= len; ++i) |
200 | { |
525 | { |
201 | SV **svp = av_fetch (av, i, 0); |
526 | SV **svp = av_fetch (av, i, 0); |
202 | encode_sv (enc, svp ? *svp : &PL_sv_undef); |
527 | encode_sv (enc, svp ? *svp : &PL_sv_undef); |
203 | } |
528 | } |
|
|
529 | else |
|
|
530 | for (i = 0; i <= len; ++i) |
|
|
531 | { |
|
|
532 | SV *sv = AvARRAY (av)[i]; |
|
|
533 | encode_sv (enc, sv ? sv : &PL_sv_undef); |
|
|
534 | } |
204 | |
535 | |
205 | --enc->depth; |
536 | --enc->depth; |
206 | } |
537 | } |
207 | |
538 | |
208 | static void |
539 | static void |
… | |
… | |
216 | ++enc->depth; |
547 | ++enc->depth; |
217 | |
548 | |
218 | int pairs = hv_iterinit (hv); |
549 | int pairs = hv_iterinit (hv); |
219 | int mg = SvMAGICAL (hv); |
550 | int mg = SvMAGICAL (hv); |
220 | |
551 | |
221 | if (mg) |
552 | if (ecb_expect_false (mg)) |
222 | encode_ch (enc, 0xa0 | 31); |
553 | encode_ch (enc, MAJOR_MAP | MINOR_INDEF); |
223 | else |
554 | else |
224 | encode_uint (enc, 0xa0, pairs); |
555 | encode_uint (enc, MAJOR_MAP, pairs); |
225 | |
556 | |
226 | while ((he = hv_iternext (hv))) |
557 | while ((he = hv_iternext (hv))) |
227 | { |
558 | { |
228 | if (HeKLEN (he) == HEf_SVKEY) |
559 | if (HeKLEN (he) == HEf_SVKEY) |
229 | encode_sv (enc, HeSVKEY (he)); |
560 | encode_sv (enc, HeSVKEY (he)); |
230 | else |
561 | else |
231 | encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he)); |
562 | encode_strref (enc, enc->cbor.flags & (F_TEXT_KEYS | F_TEXT_STRINGS), HeKUTF8 (he), HeKEY (he), HeKLEN (he)); |
232 | |
563 | |
233 | encode_sv (enc, expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he)); |
564 | encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he)); |
234 | } |
565 | } |
235 | |
566 | |
236 | if (mg) |
567 | if (ecb_expect_false (mg)) |
237 | encode_ch (enc, 0xe0 | 31); |
568 | encode_ch (enc, MAJOR_MISC | MINOR_INDEF); |
238 | |
569 | |
239 | --enc->depth; |
570 | --enc->depth; |
240 | } |
571 | } |
241 | |
572 | |
242 | // encode objects, arrays and special \0=false and \1=true values. |
573 | // encode objects, arrays and special \0=false and \1=true values. |
243 | static void |
574 | static void |
244 | encode_rv (enc_t *enc, SV *sv) |
575 | encode_rv (enc_t *enc, SV *sv) |
245 | { |
576 | { |
246 | svtype svt; |
|
|
247 | |
|
|
248 | SvGETMAGIC (sv); |
577 | SvGETMAGIC (sv); |
|
|
578 | |
249 | svt = SvTYPE (sv); |
579 | svtype svt = SvTYPE (sv); |
250 | |
580 | |
251 | if (expect_false (SvOBJECT (sv))) |
581 | if (ecb_expect_false (SvOBJECT (sv))) |
252 | { |
582 | { |
253 | HV *stash = !CBOR_SLOW || cbor_boolean_stash |
583 | HV *boolean_stash = !CBOR_SLOW || types_boolean_stash |
254 | ? cbor_boolean_stash |
584 | ? types_boolean_stash |
|
|
585 | : gv_stashpv ("Types::Serialiser::Boolean", 1); |
|
|
586 | HV *error_stash = !CBOR_SLOW || types_error_stash |
|
|
587 | ? types_error_stash |
|
|
588 | : gv_stashpv ("Types::Serialiser::Error", 1); |
|
|
589 | HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash |
|
|
590 | ? cbor_tagged_stash |
255 | : gv_stashpv ("CBOR::XS::Boolean", 1); |
591 | : gv_stashpv ("CBOR::XS::Tagged" , 1); |
256 | |
592 | |
257 | if (SvSTASH (sv) == stash) |
593 | HV *stash = SvSTASH (sv); |
258 | encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20); |
594 | |
|
|
595 | if (stash == boolean_stash) |
|
|
596 | { |
|
|
597 | encode_bool (enc, SvIV (sv)); |
|
|
598 | return; |
|
|
599 | } |
|
|
600 | else if (stash == error_stash) |
|
|
601 | { |
|
|
602 | encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF); |
|
|
603 | return; |
|
|
604 | } |
|
|
605 | else if (stash == tagged_stash) |
|
|
606 | { |
|
|
607 | if (svt != SVt_PVAV) |
|
|
608 | croak ("encountered CBOR::XS::Tagged object that isn't an array"); |
|
|
609 | |
|
|
610 | switch (av_len ((AV *)sv)) |
|
|
611 | { |
|
|
612 | case 2-1: |
|
|
613 | // actually a tagged value |
|
|
614 | encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1))); |
|
|
615 | encode_sv (enc, *av_fetch ((AV *)sv, 1, 1)); |
|
|
616 | break; |
|
|
617 | |
|
|
618 | case 3-1: |
|
|
619 | // a forced type [value, type, undef] |
|
|
620 | encode_forced (enc, SvUV (*av_fetch ((AV *)sv, 1, 1)), *av_fetch ((AV *)sv, 0, 1)); |
|
|
621 | break; |
|
|
622 | |
|
|
623 | default: |
|
|
624 | croak ("encountered malformed CBOR::XS::Tagged object"); |
|
|
625 | } |
|
|
626 | |
|
|
627 | return; |
|
|
628 | } |
|
|
629 | } |
|
|
630 | |
|
|
631 | if (ecb_expect_false (SvREFCNT (sv) > 1) |
|
|
632 | && ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING)) |
|
|
633 | { |
|
|
634 | if (ecb_expect_false (!enc->shareable)) |
|
|
635 | enc->shareable = (HV *)sv_2mortal ((SV *)newHV ()); |
|
|
636 | |
|
|
637 | SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1); |
|
|
638 | |
|
|
639 | if (SvOK (*svp)) |
|
|
640 | { |
|
|
641 | encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF); |
|
|
642 | encode_uint (enc, MAJOR_POS_INT, SvUV (*svp)); |
|
|
643 | return; |
|
|
644 | } |
259 | else |
645 | else |
260 | { |
646 | { |
261 | #if 0 //TODO |
647 | sv_setuv (*svp, enc->shareable_idx); |
262 | if (enc->cbor.flags & F_CONV_BLESSED) |
648 | ++enc->shareable_idx; |
|
|
649 | encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE); |
|
|
650 | } |
|
|
651 | } |
|
|
652 | |
|
|
653 | if (ecb_expect_false (SvOBJECT (sv))) |
|
|
654 | { |
|
|
655 | HV *stash = SvSTASH (sv); |
|
|
656 | GV *method; |
|
|
657 | |
|
|
658 | if (enc->cbor.flags & F_FORBID_OBJECTS) |
|
|
659 | croak ("encountered object '%s', but forbid_objects is enabled", |
|
|
660 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
|
|
661 | else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0))) |
263 | { |
662 | { |
|
|
663 | dSP; |
|
|
664 | |
|
|
665 | ENTER; SAVETMPS; |
|
|
666 | PUSHMARK (SP); |
264 | // we re-bless the reference to get overload and other niceties right |
667 | // we re-bless the reference to get overload and other niceties right |
265 | GV *to_cbor = gv_fetchmethod_autoload (SvSTASH (sv), "TO_CBOR", 0); |
|
|
266 | |
|
|
267 | if (to_cbor) |
|
|
268 | { |
|
|
269 | dSP; |
|
|
270 | |
|
|
271 | ENTER; SAVETMPS; PUSHMARK (SP); |
|
|
272 | XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv))); |
668 | XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash)); |
273 | |
669 | |
274 | // calling with G_SCALAR ensures that we always get a 1 return value |
|
|
275 | PUTBACK; |
670 | PUTBACK; |
|
|
671 | // G_SCALAR ensures that return value is 1 |
276 | call_sv ((SV *)GvCV (to_cbor), G_SCALAR); |
672 | call_sv ((SV *)GvCV (method), G_SCALAR); |
277 | SPAGAIN; |
673 | SPAGAIN; |
278 | |
674 | |
279 | // catch this surprisingly common error |
675 | // catch this surprisingly common error |
280 | if (SvROK (TOPs) && SvRV (TOPs) == sv) |
676 | 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))); |
677 | croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash)); |
282 | |
678 | |
283 | sv = POPs; |
|
|
284 | PUTBACK; |
|
|
285 | |
|
|
286 | encode_sv (enc, sv); |
679 | encode_sv (enc, POPs); |
287 | |
680 | |
|
|
681 | PUTBACK; |
|
|
682 | |
288 | FREETMPS; LEAVE; |
683 | FREETMPS; LEAVE; |
289 | } |
684 | } |
290 | else if (enc->cbor.flags & F_ALLOW_BLESSED) |
685 | else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0) |
291 | encode_str (enc, "null", 4, 0); |
686 | { |
292 | else |
687 | dSP; |
293 | croak ("encountered object '%s', but neither allow_blessed enabled nor TO_CBOR method available on it", |
688 | |
294 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
689 | ENTER; SAVETMPS; |
|
|
690 | PUSHMARK (SP); |
|
|
691 | EXTEND (SP, 2); |
|
|
692 | // we re-bless the reference to get overload and other niceties right |
|
|
693 | PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash)); |
|
|
694 | PUSHs (sv_cbor); |
|
|
695 | |
|
|
696 | PUTBACK; |
|
|
697 | int count = call_sv ((SV *)GvCV (method), G_ARRAY); |
|
|
698 | SPAGAIN; |
|
|
699 | |
|
|
700 | // catch this surprisingly common error |
|
|
701 | if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv) |
|
|
702 | croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash)); |
|
|
703 | |
|
|
704 | encode_tag (enc, CBOR_TAG_PERL_OBJECT); |
|
|
705 | encode_uint (enc, MAJOR_ARRAY, count + 1); |
|
|
706 | encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash)); |
|
|
707 | |
|
|
708 | { |
|
|
709 | int i; |
|
|
710 | |
|
|
711 | for (i = 0; i < count; ++i) |
|
|
712 | encode_sv (enc, SP[i + 1 - count]); |
|
|
713 | |
|
|
714 | SP -= count; |
295 | } |
715 | } |
296 | else if (enc->cbor.flags & F_ALLOW_BLESSED) |
716 | |
297 | encode_str (enc, "null", 4, 0); |
717 | PUTBACK; |
|
|
718 | |
|
|
719 | FREETMPS; LEAVE; |
|
|
720 | } |
298 | else |
721 | else |
299 | croak ("encountered object '%s', but neither allow_blessed nor convert_blessed settings are enabled", |
722 | croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it", |
300 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
723 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
301 | #endif |
|
|
302 | } |
|
|
303 | } |
724 | } |
304 | else if (svt == SVt_PVHV) |
725 | else if (svt == SVt_PVHV) |
305 | encode_hv (enc, (HV *)sv); |
726 | encode_hv (enc, (HV *)sv); |
306 | else if (svt == SVt_PVAV) |
727 | else if (svt == SVt_PVAV) |
307 | encode_av (enc, (AV *)sv); |
728 | 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 |
729 | else |
326 | croak ("encountered %s, but CBOR can only represent references to arrays or hashes", |
730 | { |
327 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
731 | encode_tag (enc, CBOR_TAG_INDIRECTION); |
|
|
732 | encode_sv (enc, sv); |
|
|
733 | } |
328 | } |
734 | } |
329 | |
735 | |
330 | static void |
736 | static void |
331 | encode_nv (enc_t *enc, SV *sv) |
737 | encode_nv (enc_t *enc, SV *sv) |
332 | { |
738 | { |
333 | double nv = SvNVX (sv); |
739 | double nv = SvNVX (sv); |
334 | |
740 | |
335 | need (enc, 9); |
741 | need (enc, 9); |
336 | |
742 | |
337 | if (expect_false (nv == (U32)nv)) |
743 | if (ecb_expect_false (nv == (NV)(U32)nv)) |
338 | encode_uint (enc, 0x00, (U32)nv); |
744 | encode_uint (enc, MAJOR_POS_INT, (U32)nv); |
339 | //TODO: maybe I32? |
745 | //TODO: maybe I32? |
340 | else if (expect_false (nv == (float)nv)) |
746 | else if (ecb_expect_false (nv == (float)nv)) |
341 | { |
747 | encode_float32 (enc, nv); |
342 | uint32_t fp = ecb_float_to_binary32 (nv); |
|
|
343 | |
|
|
344 | *enc->cur++ = 0xe0 | 26; |
|
|
345 | |
|
|
346 | if (!ecb_big_endian ()) |
|
|
347 | fp = ecb_bswap32 (fp); |
|
|
348 | |
|
|
349 | memcpy (enc->cur, &fp, 4); |
|
|
350 | enc->cur += 4; |
|
|
351 | } |
|
|
352 | else |
748 | else |
353 | { |
749 | encode_float64 (enc, nv); |
354 | uint64_t fp = ecb_double_to_binary64 (nv); |
|
|
355 | |
|
|
356 | *enc->cur++ = 0xe0 | 27; |
|
|
357 | |
|
|
358 | if (!ecb_big_endian ()) |
|
|
359 | fp = ecb_bswap64 (fp); |
|
|
360 | |
|
|
361 | memcpy (enc->cur, &fp, 8); |
|
|
362 | enc->cur += 8; |
|
|
363 | } |
|
|
364 | } |
750 | } |
365 | |
751 | |
366 | static void |
752 | static void |
367 | encode_sv (enc_t *enc, SV *sv) |
753 | encode_sv (enc_t *enc, SV *sv) |
368 | { |
754 | { |
… | |
… | |
370 | |
756 | |
371 | if (SvPOKp (sv)) |
757 | if (SvPOKp (sv)) |
372 | { |
758 | { |
373 | STRLEN len; |
759 | STRLEN len; |
374 | char *str = SvPV (sv, len); |
760 | char *str = SvPV (sv, len); |
375 | encode_str (enc, SvUTF8 (sv), str, len); |
761 | encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len); |
376 | } |
762 | } |
377 | else if (SvNOKp (sv)) |
763 | else if (SvNOKp (sv)) |
378 | encode_nv (enc, sv); |
764 | encode_nv (enc, sv); |
379 | else if (SvIOKp (sv)) |
765 | else if (SvIOKp (sv)) |
380 | { |
766 | encode_int (enc, sv); |
381 | if (SvIsUV (sv)) |
|
|
382 | encode_uint (enc, 0x00, SvUVX (sv)); |
|
|
383 | else if (SvIVX (sv) >= 0) |
|
|
384 | encode_uint (enc, 0x00, SvIVX (sv)); |
|
|
385 | else |
|
|
386 | encode_uint (enc, 0x20, -(SvIVX (sv) + 1)); |
|
|
387 | } |
|
|
388 | else if (SvROK (sv)) |
767 | else if (SvROK (sv)) |
389 | encode_rv (enc, SvRV (sv)); |
768 | encode_rv (enc, SvRV (sv)); |
390 | else if (!SvOK (sv)) |
769 | else if (!SvOK (sv)) |
391 | encode_ch (enc, 0xe0 | 22); |
770 | encode_ch (enc, MAJOR_MISC | SIMPLE_NULL); |
392 | else if (enc->cbor.flags & F_ALLOW_UNKNOWN) |
771 | else if (enc->cbor.flags & F_ALLOW_UNKNOWN) |
393 | encode_ch (enc, 0xe0 | 23); |
772 | encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF); |
394 | else |
773 | else |
395 | croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data", |
774 | croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data", |
396 | SvPV_nolen (sv), (unsigned int)SvFLAGS (sv)); |
775 | SvPV_nolen (sv), (unsigned int)SvFLAGS (sv)); |
397 | } |
776 | } |
398 | |
777 | |
399 | static SV * |
778 | static SV * |
400 | encode_cbor (SV *scalar, CBOR *cbor) |
779 | encode_cbor (SV *scalar, CBOR *cbor) |
401 | { |
780 | { |
402 | enc_t enc; |
781 | enc_t enc = { 0 }; |
403 | |
782 | |
404 | enc.cbor = *cbor; |
783 | enc.cbor = *cbor; |
405 | enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE)); |
784 | enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE)); |
406 | enc.cur = SvPVX (enc.sv); |
785 | enc.cur = SvPVX (enc.sv); |
407 | enc.end = SvEND (enc.sv); |
786 | enc.end = SvEND (enc.sv); |
408 | enc.depth = 0; |
|
|
409 | |
787 | |
410 | SvPOK_only (enc.sv); |
788 | SvPOK_only (enc.sv); |
|
|
789 | |
|
|
790 | if (cbor->flags & F_PACK_STRINGS) |
|
|
791 | { |
|
|
792 | encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE); |
|
|
793 | enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ()); |
|
|
794 | enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ()); |
|
|
795 | } |
|
|
796 | |
411 | encode_sv (&enc, scalar); |
797 | encode_sv (&enc, scalar); |
412 | |
798 | |
413 | SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv)); |
799 | SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv)); |
414 | *SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings |
800 | *SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings |
415 | |
801 | |
… | |
… | |
429 | U8 *end; // end of input string |
815 | U8 *end; // end of input string |
430 | const char *err; // parse error, if != 0 |
816 | const char *err; // parse error, if != 0 |
431 | CBOR cbor; |
817 | CBOR cbor; |
432 | U32 depth; // recursion depth |
818 | U32 depth; // recursion depth |
433 | U32 maxdepth; // recursion depth limit |
819 | U32 maxdepth; // recursion depth limit |
|
|
820 | AV *shareable; |
|
|
821 | AV *stringref; |
|
|
822 | SV *decode_tagged; |
|
|
823 | SV *err_sv; // optional sv for error, needs to be freed |
434 | } dec_t; |
824 | } dec_t; |
435 | |
825 | |
436 | #define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE |
826 | // set dec->err to ERRSV |
|
|
827 | ecb_cold static void |
|
|
828 | err_errsv (dec_t *dec) |
|
|
829 | { |
|
|
830 | if (!dec->err) |
|
|
831 | { |
|
|
832 | dec->err_sv = newSVsv (ERRSV); |
437 | |
833 | |
438 | #define WANT(len) if (expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data"); |
834 | // chop off the trailing \n |
|
|
835 | SvCUR_set (dec->err_sv, SvCUR (dec->err_sv) - 1); |
|
|
836 | *SvEND (dec->err_sv) = 0; |
439 | |
837 | |
|
|
838 | dec->err = SvPVutf8_nolen (dec->err_sv); |
|
|
839 | } |
|
|
840 | } |
|
|
841 | |
|
|
842 | // the following functions are used to reduce code size and help the compiler to optimise |
|
|
843 | ecb_cold static void |
|
|
844 | err_set (dec_t *dec, const char *reason) |
|
|
845 | { |
|
|
846 | if (!dec->err) |
|
|
847 | dec->err = reason; |
|
|
848 | } |
|
|
849 | |
|
|
850 | ecb_cold static void |
|
|
851 | err_unexpected_end (dec_t *dec) |
|
|
852 | { |
|
|
853 | err_set (dec, "unexpected end of CBOR data"); |
|
|
854 | } |
|
|
855 | |
|
|
856 | #define ERR_DO(do) SB do; goto fail; SE |
|
|
857 | #define ERR(reason) ERR_DO (err_set (dec, reason)) |
|
|
858 | #define ERR_ERRSV ERR_DO (err_errsv (dec)) |
|
|
859 | |
|
|
860 | #define WANT(len) if (ecb_expect_false ((uintptr_t)(dec->end - dec->cur) < (STRLEN)len)) ERR_DO (err_unexpected_end (dec)) |
|
|
861 | |
440 | #define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED) |
862 | #define DEC_INC_DEPTH if (ecb_expect_false (++dec->depth > dec->cbor.max_depth)) ERR (ERR_NESTING_EXCEEDED) |
441 | #define DEC_DEC_DEPTH --dec->depth |
863 | #define DEC_DEC_DEPTH --dec->depth |
442 | |
864 | |
443 | static UV |
865 | static UV |
444 | decode_uint (dec_t *dec) |
866 | decode_uint (dec_t *dec) |
445 | { |
867 | { |
446 | switch (*dec->cur & 31) |
868 | U8 m = *dec->cur & MINOR_MASK; |
447 | { |
869 | ++dec->cur; |
448 | case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7: |
|
|
449 | case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15: |
|
|
450 | case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23: |
|
|
451 | return *dec->cur++ & 31; |
|
|
452 | |
870 | |
453 | case 24: |
871 | if (ecb_expect_true (m < LENGTH_EXT1)) |
|
|
872 | return m; |
|
|
873 | else if (ecb_expect_true (m == LENGTH_EXT1)) |
|
|
874 | { |
454 | WANT (2); |
875 | WANT (1); |
455 | dec->cur += 2; |
876 | dec->cur += 1; |
456 | return dec->cur[-1]; |
877 | return dec->cur[-1]; |
457 | |
878 | } |
458 | case 25: |
879 | else if (ecb_expect_true (m == LENGTH_EXT2)) |
|
|
880 | { |
459 | WANT (3); |
881 | WANT (2); |
460 | dec->cur += 3; |
882 | dec->cur += 2; |
461 | return (((UV)dec->cur[-2]) << 8) |
883 | return (((UV)dec->cur[-2]) << 8) |
462 | | ((UV)dec->cur[-1]); |
884 | | ((UV)dec->cur[-1]); |
463 | |
885 | } |
464 | case 26: |
886 | else if (ecb_expect_true (m == LENGTH_EXT4)) |
|
|
887 | { |
465 | WANT (5); |
888 | WANT (4); |
466 | dec->cur += 5; |
889 | dec->cur += 4; |
467 | return (((UV)dec->cur[-4]) << 24) |
890 | return (((UV)dec->cur[-4]) << 24) |
468 | | (((UV)dec->cur[-3]) << 16) |
891 | | (((UV)dec->cur[-3]) << 16) |
469 | | (((UV)dec->cur[-2]) << 8) |
892 | | (((UV)dec->cur[-2]) << 8) |
470 | | ((UV)dec->cur[-1]); |
893 | | ((UV)dec->cur[-1]); |
471 | |
894 | } |
472 | case 27: |
895 | else if (ecb_expect_true (m == LENGTH_EXT8)) |
|
|
896 | { |
473 | WANT (9); |
897 | WANT (8); |
474 | dec->cur += 9; |
898 | dec->cur += 8; |
|
|
899 | |
|
|
900 | return |
|
|
901 | #if UVSIZE < 8 |
|
|
902 | 0 |
|
|
903 | #else |
475 | return (((UV)dec->cur[-8]) << 56) |
904 | (((UV)dec->cur[-8]) << 56) |
476 | | (((UV)dec->cur[-7]) << 48) |
905 | | (((UV)dec->cur[-7]) << 48) |
477 | | (((UV)dec->cur[-6]) << 40) |
906 | | (((UV)dec->cur[-6]) << 40) |
478 | | (((UV)dec->cur[-5]) << 32) |
907 | | (((UV)dec->cur[-5]) << 32) |
|
|
908 | #endif |
479 | | (((UV)dec->cur[-4]) << 24) |
909 | | (((UV)dec->cur[-4]) << 24) |
480 | | (((UV)dec->cur[-3]) << 16) |
910 | | (((UV)dec->cur[-3]) << 16) |
481 | | (((UV)dec->cur[-2]) << 8) |
911 | | (((UV)dec->cur[-2]) << 8) |
482 | | ((UV)dec->cur[-1]); |
912 | | ((UV)dec->cur[-1]); |
483 | |
913 | } |
484 | default: |
914 | else |
485 | ERR ("corrupted CBOR data (unsupported integer minor encoding)"); |
915 | ERR ("corrupted CBOR data (unsupported integer minor encoding)"); |
486 | } |
|
|
487 | |
916 | |
488 | fail: |
917 | fail: |
489 | return 0; |
918 | return 0; |
490 | } |
919 | } |
491 | |
920 | |
… | |
… | |
496 | { |
925 | { |
497 | AV *av = newAV (); |
926 | AV *av = newAV (); |
498 | |
927 | |
499 | DEC_INC_DEPTH; |
928 | DEC_INC_DEPTH; |
500 | |
929 | |
501 | if ((*dec->cur & 31) == 31) |
930 | if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF)) |
502 | { |
931 | { |
503 | ++dec->cur; |
932 | ++dec->cur; |
504 | |
933 | |
505 | for (;;) |
934 | for (;;) |
506 | { |
935 | { |
507 | WANT (1); |
936 | WANT (1); |
508 | |
937 | |
509 | if (*dec->cur == 0xe0 | 31) |
938 | if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err) |
510 | { |
939 | { |
511 | ++dec->cur; |
940 | ++dec->cur; |
512 | break; |
941 | break; |
513 | } |
942 | } |
514 | |
943 | |
515 | av_push (av, decode_sv (dec)); |
944 | av_push (av, decode_sv (dec)); |
516 | } |
945 | } |
517 | } |
946 | } |
518 | else |
947 | else |
519 | { |
948 | { |
520 | int i, len = decode_uint (dec); |
949 | UV i, len = decode_uint (dec); |
521 | |
950 | |
|
|
951 | WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays |
522 | av_fill (av, len - 1); |
952 | av_fill (av, len - 1); |
523 | |
953 | |
524 | for (i = 0; i < len; ++i) |
954 | for (i = 0; i < len; ++i) |
525 | AvARRAY (av)[i] = decode_sv (dec); |
955 | AvARRAY (av)[i] = decode_sv (dec); |
526 | } |
956 | } |
527 | |
957 | |
528 | DEC_DEC_DEPTH; |
958 | DEC_DEC_DEPTH; |
529 | return newRV_noinc ((SV *)av); |
959 | return newRV_noinc ((SV *)av); |
530 | |
960 | |
531 | fail: |
961 | fail: |
532 | SvREFCNT_dec (av); |
962 | SvREFCNT_dec_NN (av); |
533 | DEC_DEC_DEPTH; |
963 | DEC_DEC_DEPTH; |
534 | return &PL_sv_undef; |
964 | return &PL_sv_undef; |
535 | } |
965 | } |
536 | |
966 | |
|
|
967 | static void |
|
|
968 | decode_he (dec_t *dec, HV *hv) |
|
|
969 | { |
|
|
970 | // for speed reasons, we specialcase single-string |
|
|
971 | // byte or utf-8 strings as keys, but only when !stringref |
|
|
972 | |
|
|
973 | if (ecb_expect_true (!dec->stringref)) |
|
|
974 | if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8)) |
|
|
975 | { |
|
|
976 | STRLEN len = decode_uint (dec); |
|
|
977 | char *key = (char *)dec->cur; |
|
|
978 | |
|
|
979 | WANT (len); |
|
|
980 | dec->cur += len; |
|
|
981 | |
|
|
982 | hv_store (hv, key, len, decode_sv (dec), 0); |
|
|
983 | |
|
|
984 | return; |
|
|
985 | } |
|
|
986 | else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8)) |
|
|
987 | { |
|
|
988 | STRLEN len = decode_uint (dec); |
|
|
989 | char *key = (char *)dec->cur; |
|
|
990 | |
|
|
991 | WANT (len); |
|
|
992 | dec->cur += len; |
|
|
993 | |
|
|
994 | if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8)) |
|
|
995 | if (!cbor_is_utf8_string ((U8 *)key, len)) |
|
|
996 | ERR ("corrupted CBOR data (invalid UTF-8 in map key)"); |
|
|
997 | |
|
|
998 | hv_store (hv, key, -len, decode_sv (dec), 0); |
|
|
999 | |
|
|
1000 | return; |
|
|
1001 | } |
|
|
1002 | |
|
|
1003 | SV *k = decode_sv (dec); |
|
|
1004 | SV *v = decode_sv (dec); |
|
|
1005 | |
|
|
1006 | // we leak memory if uncaught exceptions are thrown by random magical |
|
|
1007 | // methods, and this is hopefully the only place where it can happen, |
|
|
1008 | // so if there is a chance of an exception, take the very slow path. |
|
|
1009 | // since catching exceptions is "undocumented/internal/forbidden" by |
|
|
1010 | // the new p5p powers, we need to call out to a perl function :/ |
|
|
1011 | if (ecb_expect_false (SvAMAGIC (k))) |
|
|
1012 | { |
|
|
1013 | dSP; |
|
|
1014 | |
|
|
1015 | ENTER; SAVETMPS; |
|
|
1016 | PUSHMARK (SP); |
|
|
1017 | EXTEND (SP, 3); |
|
|
1018 | PUSHs (sv_2mortal (newRV_inc ((SV *)hv))); |
|
|
1019 | PUSHs (sv_2mortal (k)); |
|
|
1020 | PUSHs (sv_2mortal (v)); |
|
|
1021 | |
|
|
1022 | PUTBACK; |
|
|
1023 | call_pv ("CBOR::XS::_hv_store", G_VOID | G_DISCARD | G_EVAL); |
|
|
1024 | SPAGAIN; |
|
|
1025 | |
|
|
1026 | FREETMPS; LEAVE; |
|
|
1027 | |
|
|
1028 | if (SvTRUE (ERRSV)) |
|
|
1029 | ERR_ERRSV; |
|
|
1030 | |
|
|
1031 | return; |
|
|
1032 | } |
|
|
1033 | |
|
|
1034 | hv_store_ent (hv, k, v, 0); |
|
|
1035 | SvREFCNT_dec_NN (k); |
|
|
1036 | |
|
|
1037 | fail: |
|
|
1038 | ; |
|
|
1039 | } |
|
|
1040 | |
537 | static SV * |
1041 | static SV * |
538 | decode_hv (dec_t *dec) |
1042 | decode_hv (dec_t *dec) |
539 | { |
1043 | { |
540 | HV *hv = newHV (); |
1044 | HV *hv = newHV (); |
541 | |
1045 | |
542 | DEC_INC_DEPTH; |
1046 | DEC_INC_DEPTH; |
543 | |
1047 | |
544 | if ((*dec->cur & 31) == 31) |
1048 | if (*dec->cur == (MAJOR_MAP | MINOR_INDEF)) |
545 | { |
1049 | { |
546 | ++dec->cur; |
1050 | ++dec->cur; |
547 | |
1051 | |
548 | for (;;) |
1052 | for (;;) |
549 | { |
1053 | { |
550 | WANT (1); |
1054 | WANT (1); |
551 | |
1055 | |
552 | if (*dec->cur == 0xe0 | 31) |
1056 | if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err) |
553 | { |
1057 | { |
554 | ++dec->cur; |
1058 | ++dec->cur; |
555 | break; |
1059 | break; |
556 | } |
1060 | } |
557 | |
1061 | |
558 | SV *k = decode_sv (dec); |
1062 | decode_he (dec, hv); |
559 | SV *v = decode_sv (dec); |
|
|
560 | |
|
|
561 | hv_store_ent (hv, k, v, 0); |
|
|
562 | } |
1063 | } |
563 | } |
1064 | } |
564 | else |
1065 | else |
565 | { |
1066 | { |
566 | int len = decode_uint (dec); |
1067 | UV pairs = decode_uint (dec); |
567 | |
1068 | |
|
|
1069 | WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes |
|
|
1070 | |
568 | while (len--) |
1071 | while (pairs--) |
569 | { |
1072 | 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 | } |
1073 | } |
576 | |
1074 | |
577 | DEC_DEC_DEPTH; |
1075 | DEC_DEC_DEPTH; |
578 | return newRV_noinc ((SV *)hv); |
1076 | return newRV_noinc ((SV *)hv); |
579 | |
1077 | |
580 | #if 0 |
1078 | fail: |
581 | SV *sv; |
1079 | SvREFCNT_dec_NN (hv); |
582 | HV *hv = newHV (); |
|
|
583 | |
|
|
584 | DEC_INC_DEPTH; |
1080 | DEC_DEC_DEPTH; |
585 | decode_ws (dec); |
1081 | return &PL_sv_undef; |
|
|
1082 | } |
586 | |
1083 | |
587 | for (;;) |
1084 | static SV * |
588 | { |
1085 | decode_str (dec_t *dec, int utf8) |
589 | // heuristic: assume that |
1086 | { |
590 | // a) decode_str + hv_store_ent are abysmally slow. |
1087 | SV *sv = 0; |
591 | // b) most hash keys are short, simple ascii text. |
1088 | |
592 | // => try to "fast-match" such strings to avoid |
1089 | if (ecb_expect_false ((*dec->cur & MINOR_MASK) == MINOR_INDEF)) |
593 | // the overhead of decode_str + hv_store_ent. |
|
|
594 | { |
1090 | { |
595 | SV *value; |
1091 | // indefinite length strings |
596 | char *p = dec->cur; |
1092 | ++dec->cur; |
597 | char *e = p + 24; // only try up to 24 bytes |
|
|
598 | |
1093 | |
|
|
1094 | U8 major = *dec->cur & MAJOR_MISC; |
|
|
1095 | |
|
|
1096 | sv = newSVpvn ("", 0); |
|
|
1097 | |
599 | for (;;) |
1098 | for (;;) |
600 | { |
1099 | { |
601 | // the >= 0x80 is false on most architectures |
1100 | WANT (1); |
602 | if (p == e || *p < 0x20 || *p >= 0x80 || *p == '\\') |
1101 | |
|
|
1102 | if ((*dec->cur - major) > LENGTH_EXT8) |
|
|
1103 | if (*dec->cur == (MAJOR_MISC | MINOR_INDEF)) |
603 | { |
1104 | { |
604 | // slow path, back up and use decode_str |
1105 | ++dec->cur; |
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; |
1106 | break; |
623 | } |
1107 | } |
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 | { |
1108 | else |
689 | dSP; |
1109 | ERR ("corrupted CBOR data (invalid chunks in indefinite length string)"); |
690 | int count; |
|
|
691 | |
1110 | |
692 | ENTER; SAVETMPS; PUSHMARK (SP); |
1111 | STRLEN len = decode_uint (dec); |
693 | XPUSHs (HeVAL (he)); |
|
|
694 | sv_2mortal (sv); |
|
|
695 | |
1112 | |
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 | |
|
|
735 | fail: |
|
|
736 | SvREFCNT_dec (hv); |
|
|
737 | DEC_DEC_DEPTH; |
|
|
738 | return &PL_sv_undef; |
|
|
739 | } |
|
|
740 | |
|
|
741 | static SV * |
|
|
742 | decode_str (dec_t *dec, int utf8) |
|
|
743 | { |
|
|
744 | SV *sv; |
|
|
745 | |
|
|
746 | if ((*dec->cur & 31) == 31) |
|
|
747 | { |
|
|
748 | ++dec->cur; |
|
|
749 | |
|
|
750 | sv = newSVpvn ("", 0); |
|
|
751 | |
|
|
752 | // not very fast, and certainly not robust against illegal input |
|
|
753 | for (;;) |
|
|
754 | { |
|
|
755 | WANT (1); |
1113 | WANT (len); |
756 | |
1114 | sv_catpvn (sv, dec->cur, len); |
757 | if (*dec->cur == 0xe0 | 31) |
1115 | dec->cur += len; |
758 | { |
|
|
759 | ++dec->cur; |
|
|
760 | break; |
|
|
761 | } |
|
|
762 | |
|
|
763 | SV *sv2 = decode_sv (dec); |
|
|
764 | sv_catsv (sv, sv2); |
|
|
765 | } |
1116 | } |
766 | } |
1117 | } |
767 | else |
1118 | else |
768 | { |
1119 | { |
769 | STRLEN len = decode_uint (dec); |
1120 | STRLEN len = decode_uint (dec); |
770 | |
1121 | |
771 | WANT (len); |
1122 | WANT (len); |
772 | sv = newSVpvn (dec->cur, len); |
1123 | sv = newSVpvn (dec->cur, len); |
773 | dec->cur += len; |
1124 | dec->cur += len; |
|
|
1125 | |
|
|
1126 | if (ecb_expect_false (dec->stringref) |
|
|
1127 | && SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1)) |
|
|
1128 | av_push (dec->stringref, SvREFCNT_inc_NN (sv)); |
774 | } |
1129 | } |
775 | |
1130 | |
776 | if (utf8) |
1131 | if (utf8) |
|
|
1132 | { |
|
|
1133 | if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8)) |
|
|
1134 | if (!cbor_is_utf8_string (SvPVX (sv), SvCUR (sv))) |
|
|
1135 | ERR ("corrupted CBOR data (invalid UTF-8 in text string)"); |
|
|
1136 | |
777 | SvUTF8_on (sv); |
1137 | SvUTF8_on (sv); |
|
|
1138 | } |
778 | |
1139 | |
779 | return sv; |
1140 | return sv; |
780 | |
1141 | |
781 | fail: |
1142 | fail: |
|
|
1143 | SvREFCNT_dec (sv); |
|
|
1144 | return &PL_sv_undef; |
|
|
1145 | } |
|
|
1146 | |
|
|
1147 | static SV * |
|
|
1148 | decode_tagged (dec_t *dec) |
|
|
1149 | { |
|
|
1150 | SV *sv = 0; |
|
|
1151 | UV tag = decode_uint (dec); |
|
|
1152 | |
|
|
1153 | WANT (1); |
|
|
1154 | |
|
|
1155 | switch (tag) |
|
|
1156 | { |
|
|
1157 | case CBOR_TAG_MAGIC: |
|
|
1158 | sv = decode_sv (dec); |
|
|
1159 | break; |
|
|
1160 | |
|
|
1161 | case CBOR_TAG_INDIRECTION: |
|
|
1162 | sv = newRV_noinc (decode_sv (dec)); |
|
|
1163 | break; |
|
|
1164 | |
|
|
1165 | case CBOR_TAG_STRINGREF_NAMESPACE: |
|
|
1166 | { |
|
|
1167 | // do not use SAVETMPS/FREETMPS, as these will |
|
|
1168 | // erase mortalised caches, e.g. "shareable" |
|
|
1169 | ENTER; |
|
|
1170 | |
|
|
1171 | SAVESPTR (dec->stringref); |
|
|
1172 | dec->stringref = (AV *)sv_2mortal ((SV *)newAV ()); |
|
|
1173 | |
|
|
1174 | sv = decode_sv (dec); |
|
|
1175 | |
|
|
1176 | LEAVE; |
|
|
1177 | } |
|
|
1178 | break; |
|
|
1179 | |
|
|
1180 | case CBOR_TAG_STRINGREF: |
|
|
1181 | { |
|
|
1182 | if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT)) |
|
|
1183 | ERR ("corrupted CBOR data (stringref index not an unsigned integer)"); |
|
|
1184 | |
|
|
1185 | UV idx = decode_uint (dec); |
|
|
1186 | |
|
|
1187 | if (!dec->stringref || idx >= (UV)(1 + AvFILLp (dec->stringref))) |
|
|
1188 | ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)"); |
|
|
1189 | |
|
|
1190 | sv = newSVsv (AvARRAY (dec->stringref)[idx]); |
|
|
1191 | } |
|
|
1192 | break; |
|
|
1193 | |
|
|
1194 | case CBOR_TAG_VALUE_SHAREABLE: |
|
|
1195 | { |
|
|
1196 | if (ecb_expect_false (!dec->shareable)) |
|
|
1197 | dec->shareable = (AV *)sv_2mortal ((SV *)newAV ()); |
|
|
1198 | |
|
|
1199 | if (dec->cbor.flags & F_ALLOW_CYCLES) |
|
|
1200 | { |
|
|
1201 | sv = newSV (0); |
|
|
1202 | av_push (dec->shareable, SvREFCNT_inc_NN (sv)); |
|
|
1203 | |
|
|
1204 | SV *osv = decode_sv (dec); |
|
|
1205 | sv_setsv (sv, osv); |
|
|
1206 | SvREFCNT_dec_NN (osv); |
|
|
1207 | } |
|
|
1208 | else |
|
|
1209 | { |
|
|
1210 | av_push (dec->shareable, &PL_sv_undef); |
|
|
1211 | int idx = AvFILLp (dec->shareable); |
|
|
1212 | sv = decode_sv (dec); |
|
|
1213 | av_store (dec->shareable, idx, SvREFCNT_inc_NN (sv)); |
|
|
1214 | } |
|
|
1215 | } |
|
|
1216 | break; |
|
|
1217 | |
|
|
1218 | case CBOR_TAG_VALUE_SHAREDREF: |
|
|
1219 | { |
|
|
1220 | if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT)) |
|
|
1221 | ERR ("corrupted CBOR data (sharedref index not an unsigned integer)"); |
|
|
1222 | |
|
|
1223 | UV idx = decode_uint (dec); |
|
|
1224 | |
|
|
1225 | if (!dec->shareable || idx >= (UV)(1 + AvFILLp (dec->shareable))) |
|
|
1226 | ERR ("corrupted CBOR data (sharedref index out of bounds)"); |
|
|
1227 | |
|
|
1228 | sv = newRV_inc (AvARRAY (dec->shareable)[idx]); |
|
|
1229 | |
|
|
1230 | if (sv == &PL_sv_undef) |
|
|
1231 | ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled"); |
|
|
1232 | } |
|
|
1233 | break; |
|
|
1234 | |
|
|
1235 | case CBOR_TAG_PERL_OBJECT: |
|
|
1236 | { |
|
|
1237 | if (dec->cbor.flags & F_FORBID_OBJECTS) |
|
|
1238 | goto filter; |
|
|
1239 | |
|
|
1240 | sv = decode_sv (dec); |
|
|
1241 | |
|
|
1242 | if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV) |
|
|
1243 | ERR ("corrupted CBOR data (non-array perl object)"); |
|
|
1244 | |
|
|
1245 | AV *av = (AV *)SvRV (sv); |
|
|
1246 | int len = av_len (av) + 1; |
|
|
1247 | HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0); |
|
|
1248 | |
|
|
1249 | if (!stash) |
|
|
1250 | ERR ("cannot decode perl-object (package does not exist)"); |
|
|
1251 | |
|
|
1252 | GV *method = gv_fetchmethod_autoload (stash, "THAW", 0); |
|
|
1253 | |
|
|
1254 | if (!method) |
|
|
1255 | ERR ("cannot decode perl-object (package does not have a THAW method)"); |
|
|
1256 | |
|
|
1257 | dSP; |
|
|
1258 | |
|
|
1259 | ENTER; SAVETMPS; |
|
|
1260 | PUSHMARK (SP); |
|
|
1261 | EXTEND (SP, len + 1); |
|
|
1262 | // we re-bless the reference to get overload and other niceties right |
|
|
1263 | PUSHs (*av_fetch (av, 0, 1)); |
|
|
1264 | PUSHs (sv_cbor); |
|
|
1265 | |
|
|
1266 | int i; |
|
|
1267 | |
|
|
1268 | for (i = 1; i < len; ++i) |
|
|
1269 | PUSHs (*av_fetch (av, i, 1)); |
|
|
1270 | |
|
|
1271 | PUTBACK; |
|
|
1272 | call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL); |
|
|
1273 | SPAGAIN; |
|
|
1274 | |
|
|
1275 | if (SvTRUE (ERRSV)) |
|
|
1276 | { |
|
|
1277 | FREETMPS; LEAVE; |
|
|
1278 | ERR_ERRSV; |
|
|
1279 | } |
|
|
1280 | |
|
|
1281 | SvREFCNT_dec_NN (sv); |
|
|
1282 | sv = SvREFCNT_inc (POPs); |
|
|
1283 | |
|
|
1284 | PUTBACK; |
|
|
1285 | |
|
|
1286 | FREETMPS; LEAVE; |
|
|
1287 | } |
|
|
1288 | break; |
|
|
1289 | |
|
|
1290 | default: |
|
|
1291 | filter: |
|
|
1292 | { |
|
|
1293 | SV *tag_sv = newSVuv (tag); |
|
|
1294 | |
|
|
1295 | sv = decode_sv (dec); |
|
|
1296 | |
|
|
1297 | dSP; |
|
|
1298 | ENTER; SAVETMPS; |
|
|
1299 | PUSHMARK (SP); |
|
|
1300 | EXTEND (SP, 2); |
|
|
1301 | PUSHs (tag_sv); |
|
|
1302 | PUSHs (sv); |
|
|
1303 | |
|
|
1304 | PUTBACK; |
|
|
1305 | int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL); |
|
|
1306 | SPAGAIN; |
|
|
1307 | |
|
|
1308 | if (SvTRUE (ERRSV)) |
|
|
1309 | { |
|
|
1310 | SvREFCNT_dec_NN (tag_sv); |
|
|
1311 | FREETMPS; LEAVE; |
|
|
1312 | ERR_ERRSV; |
|
|
1313 | } |
|
|
1314 | |
|
|
1315 | if (count) |
|
|
1316 | { |
|
|
1317 | SvREFCNT_dec_NN (tag_sv); |
|
|
1318 | SvREFCNT_dec_NN (sv); |
|
|
1319 | sv = SvREFCNT_inc_NN (TOPs); |
|
|
1320 | SP -= count; |
|
|
1321 | } |
|
|
1322 | else |
|
|
1323 | { |
|
|
1324 | AV *av = newAV (); |
|
|
1325 | av_push (av, tag_sv); |
|
|
1326 | av_push (av, sv); |
|
|
1327 | |
|
|
1328 | HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash |
|
|
1329 | ? cbor_tagged_stash |
|
|
1330 | : gv_stashpv ("CBOR::XS::Tagged" , 1); |
|
|
1331 | sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash); |
|
|
1332 | } |
|
|
1333 | |
|
|
1334 | PUTBACK; |
|
|
1335 | |
|
|
1336 | FREETMPS; LEAVE; |
|
|
1337 | } |
|
|
1338 | break; |
|
|
1339 | } |
|
|
1340 | |
|
|
1341 | return sv; |
|
|
1342 | |
|
|
1343 | fail: |
|
|
1344 | SvREFCNT_dec (sv); |
782 | return &PL_sv_undef; |
1345 | return &PL_sv_undef; |
783 | } |
1346 | } |
784 | |
1347 | |
785 | static SV * |
1348 | static SV * |
786 | decode_sv (dec_t *dec) |
1349 | decode_sv (dec_t *dec) |
787 | { |
1350 | { |
788 | WANT (1); |
1351 | WANT (1); |
789 | |
1352 | |
790 | switch (*dec->cur >> 5) |
1353 | switch (*dec->cur >> MAJOR_SHIFT) |
791 | { |
1354 | { |
792 | case 0: // unsigned int |
1355 | case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec)); |
793 | //TODO: 64 bit values on 3 2bit perls |
1356 | case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec)); |
794 | return newSVuv (decode_uint (dec)); |
1357 | case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0); |
795 | case 1: // negative int |
1358 | case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1); |
796 | return newSViv (-1 - (IV)decode_uint (dec)); |
1359 | case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec); |
797 | case 2: // octet string |
1360 | case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec); |
798 | return decode_str (dec, 0); |
1361 | case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec); |
799 | case 3: // utf-8 string |
1362 | |
800 | return decode_str (dec, 1); |
1363 | case MAJOR_MISC >> MAJOR_SHIFT: |
801 | case 4: // array |
|
|
802 | return decode_av (dec); |
|
|
803 | case 5: // map |
|
|
804 | return decode_hv (dec); |
|
|
805 | case 6: // tag |
|
|
806 | abort (); |
|
|
807 | break; |
|
|
808 | case 7: // misc |
|
|
809 | switch (*dec->cur++ & 31) |
1364 | switch (*dec->cur++ & MINOR_MASK) |
810 | { |
1365 | { |
811 | case 20: |
1366 | case SIMPLE_FALSE: |
812 | #if CBOR_SLOW |
1367 | #if CBOR_SLOW |
813 | cbor_false = get_bool ("CBOR::XS::false"); |
1368 | types_false = get_bool ("Types::Serialiser::false"); |
814 | #endif |
1369 | #endif |
815 | return newSVsv (cbor_false); |
1370 | return newSVsv (types_false); |
816 | case 21: |
1371 | case SIMPLE_TRUE: |
817 | #if CBOR_SLOW |
1372 | #if CBOR_SLOW |
818 | cbor_true = get_bool ("CBOR::XS::true"); |
1373 | types_true = get_bool ("Types::Serialiser::true"); |
819 | #endif |
1374 | #endif |
820 | return newSVsv (cbor_true); |
1375 | return newSVsv (types_true); |
821 | case 22: |
1376 | case SIMPLE_NULL: |
822 | return newSVsv (&PL_sv_undef); |
1377 | return newSVsv (&PL_sv_undef); |
|
|
1378 | case SIMPLE_UNDEF: |
|
|
1379 | #if CBOR_SLOW |
|
|
1380 | types_error = get_bool ("Types::Serialiser::error"); |
|
|
1381 | #endif |
|
|
1382 | return newSVsv (types_error); |
823 | |
1383 | |
824 | case 25: |
1384 | case MISC_FLOAT16: |
825 | // half float |
|
|
826 | abort (); |
|
|
827 | break; |
1385 | { |
|
|
1386 | WANT (2); |
828 | |
1387 | |
|
|
1388 | uint16_t fp = (dec->cur[0] << 8) | dec->cur[1]; |
|
|
1389 | dec->cur += 2; |
|
|
1390 | |
|
|
1391 | return newSVnv (ecb_binary16_to_float (fp)); |
|
|
1392 | } |
|
|
1393 | |
829 | case 26: |
1394 | case MISC_FLOAT32: |
830 | { |
1395 | { |
831 | uint32_t fp; |
1396 | uint32_t fp; |
832 | WANT (4); |
1397 | WANT (4); |
833 | memcpy (&fp, dec->cur, 4); |
1398 | memcpy (&fp, dec->cur, 4); |
834 | dec->cur += 4; |
1399 | dec->cur += 4; |
… | |
… | |
837 | fp = ecb_bswap32 (fp); |
1402 | fp = ecb_bswap32 (fp); |
838 | |
1403 | |
839 | return newSVnv (ecb_binary32_to_float (fp)); |
1404 | return newSVnv (ecb_binary32_to_float (fp)); |
840 | } |
1405 | } |
841 | |
1406 | |
842 | case 27: |
1407 | case MISC_FLOAT64: |
843 | { |
1408 | { |
844 | uint64_t fp; |
1409 | uint64_t fp; |
845 | WANT (8); |
1410 | WANT (8); |
846 | memcpy (&fp, dec->cur, 8); |
1411 | memcpy (&fp, dec->cur, 8); |
847 | dec->cur += 8; |
1412 | dec->cur += 8; |
… | |
… | |
850 | fp = ecb_bswap64 (fp); |
1415 | fp = ecb_bswap64 (fp); |
851 | |
1416 | |
852 | return newSVnv (ecb_binary64_to_double (fp)); |
1417 | return newSVnv (ecb_binary64_to_double (fp)); |
853 | } |
1418 | } |
854 | |
1419 | |
855 | // 0..19 unassigned |
1420 | // 0..19 unassigned simple |
856 | // 24 reserved + unassigned (reserved values are not encodable) |
1421 | // 24 reserved + unassigned simple (reserved values are not encodable) |
|
|
1422 | // 28-30 unassigned misc |
|
|
1423 | // 31 break code |
857 | default: |
1424 | default: |
858 | ERR ("corrupted CBOR data (reserved/unassigned major 7 value)"); |
1425 | ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)"); |
859 | } |
1426 | } |
860 | |
1427 | |
861 | break; |
1428 | break; |
862 | } |
1429 | } |
863 | #if 0 |
|
|
864 | switch (*dec->cur) |
|
|
865 | { |
|
|
866 | //case '"': ++dec->cur; return decode_str (dec); |
|
|
867 | case '[': ++dec->cur; return decode_av (dec); |
|
|
868 | case '{': ++dec->cur; return decode_hv (dec); |
|
|
869 | |
|
|
870 | case '-': |
|
|
871 | case '0': case '1': case '2': case '3': case '4': |
|
|
872 | case '5': case '6': case '7': case '8': case '9': |
|
|
873 | //TODO return decode_num (dec); |
|
|
874 | |
|
|
875 | case 't': |
|
|
876 | if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4)) |
|
|
877 | { |
|
|
878 | dec->cur += 4; |
|
|
879 | #if CBOR_SLOW |
|
|
880 | cbor_true = get_bool ("CBOR::XS::true"); |
|
|
881 | #endif |
|
|
882 | return newSVsv (cbor_true); |
|
|
883 | } |
|
|
884 | else |
|
|
885 | ERR ("'true' expected"); |
|
|
886 | |
|
|
887 | break; |
|
|
888 | |
|
|
889 | case 'f': |
|
|
890 | if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5)) |
|
|
891 | { |
|
|
892 | dec->cur += 5; |
|
|
893 | #if CBOR_SLOW |
|
|
894 | cbor_false = get_bool ("CBOR::XS::false"); |
|
|
895 | #endif |
|
|
896 | return newSVsv (cbor_false); |
|
|
897 | } |
|
|
898 | else |
|
|
899 | ERR ("'false' expected"); |
|
|
900 | |
|
|
901 | break; |
|
|
902 | |
|
|
903 | case 'n': |
|
|
904 | if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4)) |
|
|
905 | { |
|
|
906 | dec->cur += 4; |
|
|
907 | return newSVsv (&PL_sv_undef); |
|
|
908 | } |
|
|
909 | else |
|
|
910 | ERR ("'null' expected"); |
|
|
911 | |
|
|
912 | break; |
|
|
913 | |
|
|
914 | default: |
|
|
915 | ERR ("malformed CBOR string, neither array, object, number, string or atom"); |
|
|
916 | break; |
|
|
917 | } |
|
|
918 | #endif |
|
|
919 | |
1430 | |
920 | fail: |
1431 | fail: |
921 | return &PL_sv_undef; |
1432 | return &PL_sv_undef; |
922 | } |
1433 | } |
923 | |
1434 | |
924 | static SV * |
1435 | static SV * |
925 | decode_cbor (SV *string, CBOR *cbor, char **offset_return) |
1436 | decode_cbor (SV *string, CBOR *cbor, char **offset_return) |
926 | { |
1437 | { |
927 | dec_t dec; |
1438 | dec_t dec = { 0 }; |
928 | SV *sv; |
1439 | SV *sv; |
|
|
1440 | STRLEN len; |
|
|
1441 | char *data = SvPVbyte (string, len); |
929 | |
1442 | |
930 | /* work around bugs in 5.10 where manipulating magic values |
|
|
931 | * makes perl ignore the magic in subsequent accesses. |
|
|
932 | * also make a copy of non-PV values, to get them into a clean |
|
|
933 | * state (SvPV should do that, but it's buggy, see below). |
|
|
934 | */ |
|
|
935 | /*SvGETMAGIC (string);*/ |
|
|
936 | if (SvMAGICAL (string) || !SvPOK (string)) |
|
|
937 | string = sv_2mortal (newSVsv (string)); |
|
|
938 | |
|
|
939 | SvUPGRADE (string, SVt_PV); |
|
|
940 | |
|
|
941 | /* work around a bug in perl 5.10, which causes SvCUR to fail an |
|
|
942 | * assertion with -DDEBUGGING, although SvCUR is documented to |
|
|
943 | * return the xpv_cur field which certainly exists after upgrading. |
|
|
944 | * according to nicholas clark, calling SvPOK fixes this. |
|
|
945 | * But it doesn't fix it, so try another workaround, call SvPV_nolen |
|
|
946 | * and hope for the best. |
|
|
947 | * Damnit, SvPV_nolen still trips over yet another assertion. This |
|
|
948 | * assertion business is seriously broken, try yet another workaround |
|
|
949 | * for the broken -DDEBUGGING. |
|
|
950 | */ |
|
|
951 | { |
|
|
952 | #ifdef DEBUGGING |
|
|
953 | STRLEN offset = SvOK (string) ? sv_len (string) : 0; |
|
|
954 | #else |
|
|
955 | STRLEN offset = SvCUR (string); |
|
|
956 | #endif |
|
|
957 | |
|
|
958 | if (offset > cbor->max_size && cbor->max_size) |
1443 | if (len > cbor->max_size && cbor->max_size) |
959 | croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu", |
1444 | croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu", |
960 | (unsigned long)SvCUR (string), (unsigned long)cbor->max_size); |
1445 | (unsigned long)len, (unsigned long)cbor->max_size); |
961 | } |
|
|
962 | |
|
|
963 | sv_utf8_downgrade (string, 0); |
|
|
964 | |
1446 | |
965 | dec.cbor = *cbor; |
1447 | dec.cbor = *cbor; |
966 | dec.cur = (U8 *)SvPVX (string); |
1448 | dec.cur = (U8 *)data; |
967 | dec.end = (U8 *)SvEND (string); |
1449 | dec.end = (U8 *)data + len; |
968 | dec.err = 0; |
|
|
969 | dec.depth = 0; |
|
|
970 | |
|
|
971 | if (dec.cbor.cb_object || dec.cbor.cb_sk_object) |
|
|
972 | ;//TODO dec.cbor.flags |= F_HOOK; |
|
|
973 | |
1450 | |
974 | sv = decode_sv (&dec); |
1451 | sv = decode_sv (&dec); |
975 | |
1452 | |
976 | if (offset_return) |
1453 | if (offset_return) |
977 | *offset_return = dec.cur; |
1454 | *offset_return = dec.cur; |
978 | |
1455 | |
979 | if (!(offset_return || !sv)) |
1456 | if (!(offset_return || !sv)) |
980 | { |
|
|
981 | if (*dec.cur && !dec.err) |
1457 | if (dec.cur != dec.end && !dec.err) |
982 | { |
|
|
983 | dec.err = "garbage after CBOR object"; |
1458 | dec.err = "garbage after CBOR object"; |
984 | SvREFCNT_dec (sv); |
1459 | |
985 | sv = 0; |
1460 | if (dec.err) |
|
|
1461 | { |
|
|
1462 | if (dec.shareable) |
986 | } |
1463 | { |
987 | } |
1464 | // need to break cyclic links, which would all be in shareable |
|
|
1465 | int i; |
|
|
1466 | SV **svp; |
988 | |
1467 | |
989 | if (!sv) |
1468 | for (i = av_len (dec.shareable) + 1; i--; ) |
|
|
1469 | if ((svp = av_fetch (dec.shareable, i, 0))) |
|
|
1470 | sv_setsv (*svp, &PL_sv_undef); |
|
|
1471 | } |
|
|
1472 | |
|
|
1473 | SvREFCNT_dec_NN (sv); |
|
|
1474 | |
|
|
1475 | if (dec.err_sv) |
|
|
1476 | sv_2mortal (dec.err_sv); |
|
|
1477 | |
990 | croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (int)(uint8_t)*dec.cur); |
1478 | croak ("%s, at offset %ld (octet 0x%02x)", dec.err, (long)(dec.cur - (U8 *)data), (int)(uint8_t)*dec.cur); |
|
|
1479 | } |
991 | |
1480 | |
992 | sv = sv_2mortal (sv); |
1481 | sv = sv_2mortal (sv); |
993 | |
1482 | |
994 | return sv; |
1483 | return sv; |
995 | } |
1484 | } |
996 | |
1485 | |
|
|
1486 | ///////////////////////////////////////////////////////////////////////////// |
|
|
1487 | // incremental parser |
|
|
1488 | |
|
|
1489 | #define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0) |
|
|
1490 | |
|
|
1491 | // returns 0 for notyet, 1 for success or error |
|
|
1492 | static int |
|
|
1493 | incr_parse (CBOR *self, SV *cborstr) |
|
|
1494 | { |
|
|
1495 | STRLEN cur; |
|
|
1496 | SvPV (cborstr, cur); |
|
|
1497 | |
|
|
1498 | while (ecb_expect_true (self->incr_need <= cur)) |
|
|
1499 | { |
|
|
1500 | // table of integer count bytes |
|
|
1501 | static I8 incr_len[MINOR_MASK + 1] = { |
|
|
1502 | 0, 0, 0, 0, 0, 0, 0, 0, |
|
|
1503 | 0, 0, 0, 0, 0, 0, 0, 0, |
|
|
1504 | 0, 0, 0, 0, 0, 0, 0, 0, |
|
|
1505 | 1, 2, 4, 8,-1,-1,-1,-2 |
|
|
1506 | }; |
|
|
1507 | |
|
|
1508 | const U8 *p = SvPVX (cborstr) + self->incr_pos; |
|
|
1509 | U8 m = *p & MINOR_MASK; |
|
|
1510 | IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]); |
|
|
1511 | I8 ilen = incr_len[m]; |
|
|
1512 | |
|
|
1513 | self->incr_need = self->incr_pos + 1; |
|
|
1514 | |
|
|
1515 | if (ecb_expect_false (ilen < 0)) |
|
|
1516 | { |
|
|
1517 | if (m != MINOR_INDEF) |
|
|
1518 | return 1; // error |
|
|
1519 | |
|
|
1520 | if (*p == (MAJOR_MISC | MINOR_INDEF)) |
|
|
1521 | { |
|
|
1522 | if (count >= 0) |
|
|
1523 | return 1; // error |
|
|
1524 | |
|
|
1525 | count = 1; |
|
|
1526 | } |
|
|
1527 | else |
|
|
1528 | { |
|
|
1529 | av_push (self->incr_count, newSViv (-1)); //TODO: nest |
|
|
1530 | count = -1; |
|
|
1531 | } |
|
|
1532 | } |
|
|
1533 | else |
|
|
1534 | { |
|
|
1535 | self->incr_need += ilen; |
|
|
1536 | if (ecb_expect_false (self->incr_need > cur)) |
|
|
1537 | return 0; |
|
|
1538 | |
|
|
1539 | int major = *p >> MAJOR_SHIFT; |
|
|
1540 | |
|
|
1541 | switch (major) |
|
|
1542 | { |
|
|
1543 | case MAJOR_TAG >> MAJOR_SHIFT: |
|
|
1544 | ++count; // tags merely prefix another value |
|
|
1545 | break; |
|
|
1546 | |
|
|
1547 | case MAJOR_BYTES >> MAJOR_SHIFT: |
|
|
1548 | case MAJOR_TEXT >> MAJOR_SHIFT: |
|
|
1549 | case MAJOR_ARRAY >> MAJOR_SHIFT: |
|
|
1550 | case MAJOR_MAP >> MAJOR_SHIFT: |
|
|
1551 | { |
|
|
1552 | UV len; |
|
|
1553 | |
|
|
1554 | if (ecb_expect_false (ilen)) |
|
|
1555 | { |
|
|
1556 | len = 0; |
|
|
1557 | |
|
|
1558 | do { |
|
|
1559 | len = (len << 8) | *++p; |
|
|
1560 | } while (--ilen); |
|
|
1561 | } |
|
|
1562 | else |
|
|
1563 | len = m; |
|
|
1564 | |
|
|
1565 | switch (major) |
|
|
1566 | { |
|
|
1567 | case MAJOR_BYTES >> MAJOR_SHIFT: |
|
|
1568 | case MAJOR_TEXT >> MAJOR_SHIFT: |
|
|
1569 | self->incr_need += len; |
|
|
1570 | if (ecb_expect_false (self->incr_need > cur)) |
|
|
1571 | return 0; |
|
|
1572 | |
|
|
1573 | break; |
|
|
1574 | |
|
|
1575 | case MAJOR_MAP >> MAJOR_SHIFT: |
|
|
1576 | len <<= 1; |
|
|
1577 | /* FALLTHROUGH */ |
|
|
1578 | case MAJOR_ARRAY >> MAJOR_SHIFT: |
|
|
1579 | if (len) |
|
|
1580 | { |
|
|
1581 | av_push (self->incr_count, newSViv (len + 1)); //TODO: nest |
|
|
1582 | count = len + 1; |
|
|
1583 | } |
|
|
1584 | break; |
|
|
1585 | } |
|
|
1586 | } |
|
|
1587 | } |
|
|
1588 | } |
|
|
1589 | |
|
|
1590 | self->incr_pos = self->incr_need; |
|
|
1591 | |
|
|
1592 | if (count > 0) |
|
|
1593 | { |
|
|
1594 | while (!--count) |
|
|
1595 | { |
|
|
1596 | if (!AvFILLp (self->incr_count)) |
|
|
1597 | return 1; // done |
|
|
1598 | |
|
|
1599 | SvREFCNT_dec_NN (av_pop (self->incr_count)); |
|
|
1600 | count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]); |
|
|
1601 | } |
|
|
1602 | |
|
|
1603 | SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count; |
|
|
1604 | } |
|
|
1605 | } |
|
|
1606 | |
|
|
1607 | return 0; |
|
|
1608 | } |
|
|
1609 | |
|
|
1610 | |
997 | ///////////////////////////////////////////////////////////////////////////// |
1611 | ///////////////////////////////////////////////////////////////////////////// |
998 | // XS interface functions |
1612 | // XS interface functions |
999 | |
1613 | |
1000 | MODULE = CBOR::XS PACKAGE = CBOR::XS |
1614 | MODULE = CBOR::XS PACKAGE = CBOR::XS |
1001 | |
1615 | |
1002 | BOOT: |
1616 | BOOT: |
1003 | { |
1617 | { |
1004 | cbor_stash = gv_stashpv ("CBOR::XS" , 1); |
1618 | cbor_stash = gv_stashpv ("CBOR::XS" , 1); |
1005 | cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1); |
1619 | cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1); |
1006 | |
1620 | |
1007 | cbor_true = get_bool ("CBOR::XS::true"); |
1621 | types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1); |
1008 | cbor_false = get_bool ("CBOR::XS::false"); |
1622 | types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1); |
|
|
1623 | |
|
|
1624 | types_true = get_bool ("Types::Serialiser::true" ); |
|
|
1625 | types_false = get_bool ("Types::Serialiser::false"); |
|
|
1626 | types_error = get_bool ("Types::Serialiser::error"); |
|
|
1627 | |
|
|
1628 | default_filter = newSVpv ("CBOR::XS::default_filter", 0); |
|
|
1629 | |
|
|
1630 | sv_cbor = newSVpv ("CBOR", 0); |
|
|
1631 | SvREADONLY_on (sv_cbor); |
|
|
1632 | |
|
|
1633 | assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1)); |
1009 | } |
1634 | } |
1010 | |
1635 | |
1011 | PROTOTYPES: DISABLE |
1636 | PROTOTYPES: DISABLE |
1012 | |
1637 | |
1013 | void CLONE (...) |
1638 | void CLONE (...) |
1014 | CODE: |
1639 | CODE: |
1015 | cbor_stash = 0; |
1640 | cbor_stash = 0; |
|
|
1641 | cbor_tagged_stash = 0; |
|
|
1642 | types_error_stash = 0; |
1016 | cbor_boolean_stash = 0; |
1643 | types_boolean_stash = 0; |
1017 | |
1644 | |
1018 | void new (char *klass) |
1645 | void new (char *klass) |
1019 | PPCODE: |
1646 | PPCODE: |
1020 | { |
1647 | { |
1021 | SV *pv = NEWSV (0, sizeof (CBOR)); |
1648 | SV *pv = NEWSV (0, sizeof (CBOR)); |
… | |
… | |
1029 | |
1656 | |
1030 | void shrink (CBOR *self, int enable = 1) |
1657 | void shrink (CBOR *self, int enable = 1) |
1031 | ALIAS: |
1658 | ALIAS: |
1032 | shrink = F_SHRINK |
1659 | shrink = F_SHRINK |
1033 | allow_unknown = F_ALLOW_UNKNOWN |
1660 | allow_unknown = F_ALLOW_UNKNOWN |
|
|
1661 | allow_sharing = F_ALLOW_SHARING |
|
|
1662 | allow_cycles = F_ALLOW_CYCLES |
|
|
1663 | forbid_objects = F_FORBID_OBJECTS |
|
|
1664 | pack_strings = F_PACK_STRINGS |
|
|
1665 | text_keys = F_TEXT_KEYS |
|
|
1666 | text_strings = F_TEXT_STRINGS |
|
|
1667 | validate_utf8 = F_VALIDATE_UTF8 |
1034 | PPCODE: |
1668 | PPCODE: |
1035 | { |
1669 | { |
1036 | if (enable) |
1670 | if (enable) |
1037 | self->flags |= ix; |
1671 | self->flags |= ix; |
1038 | else |
1672 | else |
… | |
… | |
1043 | |
1677 | |
1044 | void get_shrink (CBOR *self) |
1678 | void get_shrink (CBOR *self) |
1045 | ALIAS: |
1679 | ALIAS: |
1046 | get_shrink = F_SHRINK |
1680 | get_shrink = F_SHRINK |
1047 | get_allow_unknown = F_ALLOW_UNKNOWN |
1681 | get_allow_unknown = F_ALLOW_UNKNOWN |
|
|
1682 | get_allow_sharing = F_ALLOW_SHARING |
|
|
1683 | get_allow_cycles = F_ALLOW_CYCLES |
|
|
1684 | get_forbid_objects = F_FORBID_OBJECTS |
|
|
1685 | get_pack_strings = F_PACK_STRINGS |
|
|
1686 | get_text_keys = F_TEXT_KEYS |
|
|
1687 | get_text_strings = F_TEXT_STRINGS |
|
|
1688 | get_validate_utf8 = F_VALIDATE_UTF8 |
1048 | PPCODE: |
1689 | PPCODE: |
1049 | XPUSHs (boolSV (self->flags & ix)); |
1690 | XPUSHs (boolSV (self->flags & ix)); |
1050 | |
1691 | |
1051 | void max_depth (CBOR *self, U32 max_depth = 0x80000000UL) |
1692 | void max_depth (CBOR *self, U32 max_depth = 0x80000000UL) |
1052 | PPCODE: |
1693 | PPCODE: |
… | |
… | |
1068 | CODE: |
1709 | CODE: |
1069 | RETVAL = self->max_size; |
1710 | RETVAL = self->max_size; |
1070 | OUTPUT: |
1711 | OUTPUT: |
1071 | RETVAL |
1712 | RETVAL |
1072 | |
1713 | |
1073 | #if 0 //TODO |
1714 | void filter (CBOR *self, SV *filter = 0) |
1074 | |
|
|
1075 | void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef) |
|
|
1076 | PPCODE: |
1715 | PPCODE: |
1077 | { |
|
|
1078 | SvREFCNT_dec (self->cb_object); |
1716 | SvREFCNT_dec (self->filter); |
1079 | self->cb_object = SvOK (cb) ? newSVsv (cb) : 0; |
1717 | self->filter = filter ? newSVsv (filter) : filter; |
1080 | |
|
|
1081 | XPUSHs (ST (0)); |
1718 | XPUSHs (ST (0)); |
1082 | } |
|
|
1083 | |
1719 | |
1084 | void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef) |
1720 | SV *get_filter (CBOR *self) |
1085 | PPCODE: |
1721 | CODE: |
1086 | { |
1722 | RETVAL = self->filter ? self->filter : NEWSV (0, 0); |
1087 | if (!self->cb_sk_object) |
1723 | OUTPUT: |
1088 | self->cb_sk_object = newHV (); |
1724 | RETVAL |
1089 | |
|
|
1090 | if (SvOK (cb)) |
|
|
1091 | hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0); |
|
|
1092 | else |
|
|
1093 | { |
|
|
1094 | hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0); |
|
|
1095 | |
|
|
1096 | if (!HvKEYS (self->cb_sk_object)) |
|
|
1097 | { |
|
|
1098 | SvREFCNT_dec (self->cb_sk_object); |
|
|
1099 | self->cb_sk_object = 0; |
|
|
1100 | } |
|
|
1101 | } |
|
|
1102 | |
|
|
1103 | XPUSHs (ST (0)); |
|
|
1104 | } |
|
|
1105 | |
|
|
1106 | #endif |
|
|
1107 | |
1725 | |
1108 | void encode (CBOR *self, SV *scalar) |
1726 | void encode (CBOR *self, SV *scalar) |
1109 | PPCODE: |
1727 | PPCODE: |
1110 | PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN; |
1728 | PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN; |
1111 | XPUSHs (scalar); |
1729 | XPUSHs (scalar); |
… | |
… | |
1124 | EXTEND (SP, 2); |
1742 | EXTEND (SP, 2); |
1125 | PUSHs (sv); |
1743 | PUSHs (sv); |
1126 | PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr)))); |
1744 | PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr)))); |
1127 | } |
1745 | } |
1128 | |
1746 | |
|
|
1747 | void incr_parse (CBOR *self, SV *cborstr) |
|
|
1748 | ALIAS: |
|
|
1749 | incr_parse_multiple = 1 |
|
|
1750 | PPCODE: |
|
|
1751 | { |
|
|
1752 | if (SvUTF8 (cborstr)) |
|
|
1753 | sv_utf8_downgrade (cborstr, 0); |
|
|
1754 | |
|
|
1755 | if (!self->incr_count) |
|
|
1756 | { |
|
|
1757 | self->incr_count = newAV (); |
|
|
1758 | self->incr_pos = 0; |
|
|
1759 | self->incr_need = 1; |
|
|
1760 | |
|
|
1761 | av_push (self->incr_count, newSViv (1)); |
|
|
1762 | } |
|
|
1763 | |
|
|
1764 | do |
|
|
1765 | { |
|
|
1766 | if (!incr_parse (self, cborstr)) |
|
|
1767 | { |
|
|
1768 | if (self->incr_need > self->max_size && self->max_size) |
|
|
1769 | croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu", |
|
|
1770 | (unsigned long)self->incr_need, (unsigned long)self->max_size); |
|
|
1771 | |
|
|
1772 | break; |
|
|
1773 | } |
|
|
1774 | |
|
|
1775 | SV *sv; |
|
|
1776 | char *offset; |
|
|
1777 | |
|
|
1778 | PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN; |
|
|
1779 | XPUSHs (sv); |
|
|
1780 | |
|
|
1781 | sv_chop (cborstr, offset); |
|
|
1782 | |
|
|
1783 | av_clear (self->incr_count); |
|
|
1784 | av_push (self->incr_count, newSViv (1)); |
|
|
1785 | |
|
|
1786 | self->incr_pos = 0; |
|
|
1787 | self->incr_need = self->incr_pos + 1; |
|
|
1788 | } |
|
|
1789 | while (ix); |
|
|
1790 | } |
|
|
1791 | |
|
|
1792 | void incr_reset (CBOR *self) |
|
|
1793 | CODE: |
|
|
1794 | { |
|
|
1795 | SvREFCNT_dec (self->incr_count); |
|
|
1796 | self->incr_count = 0; |
|
|
1797 | } |
|
|
1798 | |
1129 | void DESTROY (CBOR *self) |
1799 | void DESTROY (CBOR *self) |
1130 | CODE: |
1800 | PPCODE: |
1131 | SvREFCNT_dec (self->cb_sk_object); |
1801 | cbor_free (self); |
1132 | SvREFCNT_dec (self->cb_object); |
|
|
1133 | |
1802 | |
1134 | PROTOTYPES: ENABLE |
1803 | PROTOTYPES: ENABLE |
1135 | |
1804 | |
1136 | void encode_cbor (SV *scalar) |
1805 | void encode_cbor (SV *scalar) |
|
|
1806 | ALIAS: |
|
|
1807 | encode_cbor = 0 |
|
|
1808 | encode_cbor_sharing = F_ALLOW_SHARING |
1137 | PPCODE: |
1809 | PPCODE: |
1138 | { |
1810 | { |
1139 | CBOR cbor; |
1811 | CBOR cbor; |
1140 | cbor_init (&cbor); |
1812 | cbor_init (&cbor); |
|
|
1813 | cbor.flags |= ix; |
1141 | PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN; |
1814 | PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN; |
1142 | XPUSHs (scalar); |
1815 | XPUSHs (scalar); |
1143 | } |
1816 | } |
1144 | |
1817 | |
1145 | void decode_cbor (SV *cborstr) |
1818 | void decode_cbor (SV *cborstr) |
… | |
… | |
1149 | cbor_init (&cbor); |
1822 | cbor_init (&cbor); |
1150 | PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN; |
1823 | PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN; |
1151 | XPUSHs (cborstr); |
1824 | XPUSHs (cborstr); |
1152 | } |
1825 | } |
1153 | |
1826 | |
|
|
1827 | #ifdef __AFL_COMPILER |
|
|
1828 | |
|
|
1829 | void |
|
|
1830 | afl_init () |
|
|
1831 | CODE: |
|
|
1832 | __AFL_INIT (); |
|
|
1833 | |
|
|
1834 | int |
|
|
1835 | afl_loop (unsigned int count = 10000) |
|
|
1836 | CODE: |
|
|
1837 | RETVAL = __AFL_LOOP (count); |
|
|
1838 | OUTPUT: |
|
|
1839 | RETVAL |
|
|
1840 | |
|
|
1841 | #endif |
|
|
1842 | |