… | |
… | |
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 | |
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16 | // compatibility with perl <5.18 |
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17 | #ifndef HvNAMELEN_get |
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18 | # define HvNAMELEN_get(hv) strlen (HvNAME (hv)) |
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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 |
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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 | |
14 | #define F_SHRINK 0x00000200UL |
121 | #define F_SHRINK 0x00000001UL |
15 | #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_ALLOW_WEAK_CYCLES 0x00000010UL |
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126 | #define F_FORBID_OBJECTS 0x00000020UL |
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127 | #define F_PACK_STRINGS 0x00000040UL |
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128 | #define F_TEXT_KEYS 0x00000080UL |
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129 | #define F_TEXT_STRINGS 0x00000100UL |
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130 | #define F_VALIDATE_UTF8 0x00000200UL |
16 | |
131 | |
17 | #define INIT_SIZE 32 // initial scalar size to be allocated |
132 | #define INIT_SIZE 32 // initial scalar size to be allocated |
18 | |
133 | |
19 | #define SB do { |
134 | #define SB do { |
20 | #define SE } while (0) |
135 | #define SE } while (0) |
21 | |
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22 | #if __GNUC__ >= 3 |
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23 | # define expect(expr,value) __builtin_expect ((expr), (value)) |
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24 | # define INLINE static inline |
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25 | #else |
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26 | # define expect(expr,value) (expr) |
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27 | # define INLINE static |
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28 | #endif |
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29 | |
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30 | #define expect_false(expr) expect ((expr) != 0, 0) |
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31 | #define expect_true(expr) expect ((expr) != 0, 1) |
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32 | |
136 | |
33 | #define IN_RANGE_INC(type,val,beg,end) \ |
137 | #define IN_RANGE_INC(type,val,beg,end) \ |
34 | ((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \ |
138 | ((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \ |
35 | <= (unsigned type)((unsigned type)(end) - (unsigned type)(beg))) |
139 | <= (unsigned type)((unsigned type)(end) - (unsigned type)(beg))) |
36 | |
140 | |
… | |
… | |
42 | #else |
146 | #else |
43 | # define CBOR_SLOW 0 |
147 | # define CBOR_SLOW 0 |
44 | # define CBOR_STASH cbor_stash |
148 | # define CBOR_STASH cbor_stash |
45 | #endif |
149 | #endif |
46 | |
150 | |
47 | static HV *cbor_stash, *cbor_boolean_stash; // CBOR::XS:: |
151 | static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS:: |
48 | static SV *cbor_true, *cbor_false; |
152 | static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter; |
49 | |
153 | |
50 | typedef struct { |
154 | typedef struct { |
51 | U32 flags; |
155 | U32 flags; |
52 | U32 max_depth; |
156 | U32 max_depth; |
53 | STRLEN max_size; |
157 | STRLEN max_size; |
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158 | SV *filter; |
54 | |
159 | |
55 | SV *cb_object; |
160 | // for the incremental parser |
56 | HV *cb_sk_object; |
161 | STRLEN incr_pos; // the current offset into the text |
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162 | STRLEN incr_need; // minimum bytes needed to decode |
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163 | AV *incr_count; // for every nesting level, the number of outstanding values, or -1 for indef. |
57 | } CBOR; |
164 | } CBOR; |
58 | |
165 | |
59 | INLINE void |
166 | ecb_inline void |
60 | cbor_init (CBOR *cbor) |
167 | cbor_init (CBOR *cbor) |
61 | { |
168 | { |
62 | Zero (cbor, 1, CBOR); |
169 | Zero (cbor, 1, CBOR); |
63 | cbor->max_depth = 512; |
170 | cbor->max_depth = 512; |
64 | } |
171 | } |
65 | |
172 | |
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173 | ecb_inline void |
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174 | cbor_free (CBOR *cbor) |
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175 | { |
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176 | SvREFCNT_dec (cbor->filter); |
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177 | SvREFCNT_dec (cbor->incr_count); |
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178 | } |
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179 | |
66 | ///////////////////////////////////////////////////////////////////////////// |
180 | ///////////////////////////////////////////////////////////////////////////// |
67 | // utility functions |
181 | // utility functions |
68 | |
182 | |
69 | INLINE SV * |
183 | ecb_inline SV * |
70 | get_bool (const char *name) |
184 | get_bool (const char *name) |
71 | { |
185 | { |
72 | SV *sv = get_sv (name, 1); |
186 | SV *sv = get_sv (name, 1); |
73 | |
187 | |
74 | SvREADONLY_on (sv); |
188 | SvREADONLY_on (sv); |
75 | SvREADONLY_on (SvRV (sv)); |
189 | SvREADONLY_on (SvRV (sv)); |
76 | |
190 | |
77 | return sv; |
191 | return sv; |
78 | } |
192 | } |
79 | |
193 | |
80 | INLINE void |
194 | ecb_inline void |
81 | shrink (SV *sv) |
195 | shrink (SV *sv) |
82 | { |
196 | { |
83 | sv_utf8_downgrade (sv, 1); |
197 | sv_utf8_downgrade (sv, 1); |
84 | |
198 | |
85 | if (SvLEN (sv) > SvCUR (sv) + 1) |
199 | if (SvLEN (sv) > SvCUR (sv) + 1) |
… | |
… | |
90 | SvPV_renew (sv, SvCUR (sv) + 1); |
204 | SvPV_renew (sv, SvCUR (sv) + 1); |
91 | #endif |
205 | #endif |
92 | } |
206 | } |
93 | } |
207 | } |
94 | |
208 | |
95 | ///////////////////////////////////////////////////////////////////////////// |
209 | // minimum length of a string to be registered for stringref |
96 | // fp hell |
210 | ecb_inline STRLEN |
97 | |
211 | minimum_string_length (UV idx) |
98 | //TODO |
212 | { |
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213 | return idx <= 23 ? 3 |
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214 | : idx <= 0xffU ? 4 |
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215 | : idx <= 0xffffU ? 5 |
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216 | : idx <= 0xffffffffU ? 7 |
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217 | : 11; |
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218 | } |
99 | |
219 | |
100 | ///////////////////////////////////////////////////////////////////////////// |
220 | ///////////////////////////////////////////////////////////////////////////// |
101 | // encoder |
221 | // encoder |
102 | |
222 | |
103 | // structure used for encoding CBOR |
223 | // structure used for encoding CBOR |
… | |
… | |
106 | char *cur; // SvPVX (sv) + current output position |
226 | char *cur; // SvPVX (sv) + current output position |
107 | char *end; // SvEND (sv) |
227 | char *end; // SvEND (sv) |
108 | SV *sv; // result scalar |
228 | SV *sv; // result scalar |
109 | CBOR cbor; |
229 | CBOR cbor; |
110 | U32 depth; // recursion level |
230 | U32 depth; // recursion level |
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231 | HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8) |
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232 | UV stringref_idx; |
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233 | HV *shareable; // ptr => index, or 0 |
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234 | UV shareable_idx; |
111 | } enc_t; |
235 | } enc_t; |
112 | |
236 | |
113 | INLINE void |
237 | ecb_inline void |
114 | need (enc_t *enc, STRLEN len) |
238 | need (enc_t *enc, STRLEN len) |
115 | { |
239 | { |
116 | if (expect_false (enc->cur + len >= enc->end)) |
240 | if (ecb_expect_false ((uintptr_t)(enc->end - enc->cur) < len)) |
117 | { |
241 | { |
118 | STRLEN cur = enc->cur - (char *)SvPVX (enc->sv); |
242 | STRLEN cur = enc->cur - (char *)SvPVX (enc->sv); |
119 | SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1); |
243 | SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1); |
120 | enc->cur = SvPVX (enc->sv) + cur; |
244 | enc->cur = SvPVX (enc->sv) + cur; |
121 | enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1; |
245 | enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1; |
122 | } |
246 | } |
123 | } |
247 | } |
124 | |
248 | |
125 | INLINE void |
249 | static void encode_sv (enc_t *enc, SV *sv); |
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250 | |
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251 | ecb_inline void |
126 | encode_ch (enc_t *enc, char ch) |
252 | encode_ch (enc_t *enc, char ch) |
127 | { |
253 | { |
128 | need (enc, 1); |
254 | need (enc, 1); |
129 | *enc->cur++ = ch; |
255 | *enc->cur++ = ch; |
130 | } |
256 | } |
131 | |
257 | |
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258 | // used for tags, intregers, element counts and so on |
132 | static void |
259 | static void |
133 | encode_uint (enc_t *enc, int major, UV len) |
260 | encode_uint (enc_t *enc, int major, UV len) |
134 | { |
261 | { |
135 | need (enc, 9); |
262 | need (enc, 9); |
136 | |
263 | |
137 | if (len < 24) |
264 | if (ecb_expect_true (len < LENGTH_EXT1)) |
138 | *enc->cur++ = major | len; |
265 | *enc->cur++ = major | len; |
139 | else if (len <= 0xff) |
266 | else if (ecb_expect_true (len <= 0xffU)) |
140 | { |
267 | { |
141 | *enc->cur++ = major | 24; |
268 | *enc->cur++ = major | LENGTH_EXT1; |
142 | *enc->cur++ = len; |
269 | *enc->cur++ = len; |
143 | } |
270 | } |
144 | else if (len <= 0xffff) |
271 | else if (len <= 0xffffU) |
145 | { |
272 | { |
146 | *enc->cur++ = major | 25; |
273 | *enc->cur++ = major | LENGTH_EXT2; |
147 | *enc->cur++ = len >> 8; |
274 | *enc->cur++ = len >> 8; |
148 | *enc->cur++ = len; |
275 | *enc->cur++ = len; |
149 | } |
276 | } |
150 | else if (len <= 0xffffffff) |
277 | else if (len <= 0xffffffffU) |
151 | { |
278 | { |
152 | *enc->cur++ = major | 26; |
279 | *enc->cur++ = major | LENGTH_EXT4; |
153 | *enc->cur++ = len >> 24; |
280 | *enc->cur++ = len >> 24; |
154 | *enc->cur++ = len >> 16; |
281 | *enc->cur++ = len >> 16; |
155 | *enc->cur++ = len >> 8; |
282 | *enc->cur++ = len >> 8; |
156 | *enc->cur++ = len; |
283 | *enc->cur++ = len; |
157 | } |
284 | } |
158 | else |
285 | else |
159 | { |
286 | { |
160 | *enc->cur++ = major | 27; |
287 | *enc->cur++ = major | LENGTH_EXT8; |
161 | *enc->cur++ = len >> 56; |
288 | *enc->cur++ = len >> 56; |
162 | *enc->cur++ = len >> 48; |
289 | *enc->cur++ = len >> 48; |
163 | *enc->cur++ = len >> 40; |
290 | *enc->cur++ = len >> 40; |
164 | *enc->cur++ = len >> 32; |
291 | *enc->cur++ = len >> 32; |
165 | *enc->cur++ = len >> 24; |
292 | *enc->cur++ = len >> 24; |
… | |
… | |
167 | *enc->cur++ = len >> 8; |
294 | *enc->cur++ = len >> 8; |
168 | *enc->cur++ = len; |
295 | *enc->cur++ = len; |
169 | } |
296 | } |
170 | } |
297 | } |
171 | |
298 | |
172 | static void |
299 | // encodes a perl value into a CBOR integer |
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300 | ecb_inline void |
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301 | encode_int (enc_t *enc, SV *sv) |
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302 | { |
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303 | if (SvIsUV (sv)) |
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304 | encode_uint (enc, MAJOR_POS_INT, SvUVX (sv)); |
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305 | else if (SvIVX (sv) >= 0) |
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306 | encode_uint (enc, MAJOR_POS_INT, SvIVX (sv)); |
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307 | else |
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308 | encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1)); |
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309 | } |
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310 | |
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311 | ecb_inline void |
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312 | encode_tag (enc_t *enc, UV tag) |
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313 | { |
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314 | encode_uint (enc, MAJOR_TAG, tag); |
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315 | } |
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316 | |
|
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317 | // exceptional (hopefully) slow path for byte strings that need to be utf8-encoded |
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318 | ecb_noinline static void |
173 | encode_str (enc_t *enc, int utf8, char *str, STRLEN len) |
319 | encode_str_utf8 (enc_t *enc, int utf8, char *str, STRLEN len) |
174 | { |
320 | { |
175 | encode_uint (enc, utf8 ? 0x60 : 0x40, len); |
321 | STRLEN ulen = len; |
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322 | U8 *p, *pend = (U8 *)str + len; |
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323 | |
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324 | for (p = (U8 *)str; p < pend; ++p) |
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325 | ulen += *p >> 7; // count set high bits |
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326 | |
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327 | encode_uint (enc, MAJOR_TEXT, ulen); |
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328 | |
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329 | need (enc, ulen); |
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330 | for (p = (U8 *)str; p < pend; ++p) |
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331 | if (*p < 0x80) |
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332 | *enc->cur++ = *p; |
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333 | else |
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334 | { |
|
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335 | *enc->cur++ = 0xc0 + (*p >> 6); |
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336 | *enc->cur++ = 0x80 + (*p & 63); |
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337 | } |
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338 | } |
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339 | |
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340 | ecb_inline void |
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341 | encode_str (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len) |
|
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342 | { |
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343 | if (ecb_expect_false (upgrade_utf8)) |
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344 | if (!utf8) |
|
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345 | { |
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346 | encode_str_utf8 (enc, utf8, str, len); |
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347 | return; |
|
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348 | } |
|
|
349 | |
|
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350 | encode_uint (enc, utf8 ? MAJOR_TEXT : MAJOR_BYTES, len); |
176 | need (enc, len); |
351 | need (enc, len); |
177 | memcpy (enc->cur, str, len); |
352 | memcpy (enc->cur, str, len); |
178 | enc->cur += len; |
353 | enc->cur += len; |
179 | } |
354 | } |
180 | |
355 | |
181 | static void encode_sv (enc_t *enc, SV *sv); |
356 | ecb_inline void |
|
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357 | encode_strref (enc_t *enc, int upgrade_utf8, int utf8, char *str, STRLEN len) |
|
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358 | { |
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359 | if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS)) |
|
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360 | { |
|
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361 | SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1); |
|
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362 | |
|
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363 | if (SvOK (*svp)) |
|
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364 | { |
|
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365 | // already registered, use stringref |
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366 | encode_tag (enc, CBOR_TAG_STRINGREF); |
|
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367 | encode_uint (enc, MAJOR_POS_INT, SvUV (*svp)); |
|
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368 | return; |
|
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369 | } |
|
|
370 | else if (len >= minimum_string_length (enc->stringref_idx)) |
|
|
371 | { |
|
|
372 | // register only |
|
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373 | sv_setuv (*svp, enc->stringref_idx); |
|
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374 | ++enc->stringref_idx; |
|
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375 | } |
|
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376 | } |
|
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377 | |
|
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378 | encode_str (enc, upgrade_utf8, utf8, str, len); |
|
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379 | } |
|
|
380 | |
|
|
381 | ecb_inline void |
|
|
382 | encode_float16 (enc_t *enc, NV nv) |
|
|
383 | { |
|
|
384 | need (enc, 1+2); |
|
|
385 | |
|
|
386 | *enc->cur++ = MAJOR_MISC | MISC_FLOAT16; |
|
|
387 | |
|
|
388 | uint16_t fp = ecb_float_to_binary16 (nv); |
|
|
389 | |
|
|
390 | if (!ecb_big_endian ()) |
|
|
391 | fp = ecb_bswap16 (fp); |
|
|
392 | |
|
|
393 | memcpy (enc->cur, &fp, 2); |
|
|
394 | enc->cur += 2; |
|
|
395 | } |
|
|
396 | |
|
|
397 | ecb_inline void |
|
|
398 | encode_float32 (enc_t *enc, NV nv) |
|
|
399 | { |
|
|
400 | need (enc, 1+4); |
|
|
401 | |
|
|
402 | *enc->cur++ = MAJOR_MISC | MISC_FLOAT32; |
|
|
403 | |
|
|
404 | uint32_t fp = ecb_float_to_binary32 (nv); |
|
|
405 | |
|
|
406 | if (!ecb_big_endian ()) |
|
|
407 | fp = ecb_bswap32 (fp); |
|
|
408 | |
|
|
409 | memcpy (enc->cur, &fp, 4); |
|
|
410 | enc->cur += 4; |
|
|
411 | } |
|
|
412 | |
|
|
413 | ecb_inline void |
|
|
414 | encode_float64 (enc_t *enc, NV nv) |
|
|
415 | { |
|
|
416 | need (enc, 1+8); |
|
|
417 | |
|
|
418 | *enc->cur++ = MAJOR_MISC | MISC_FLOAT64; |
|
|
419 | |
|
|
420 | uint64_t fp = ecb_double_to_binary64 (nv); |
|
|
421 | |
|
|
422 | if (!ecb_big_endian ()) |
|
|
423 | fp = ecb_bswap64 (fp); |
|
|
424 | |
|
|
425 | memcpy (enc->cur, &fp, 8); |
|
|
426 | enc->cur += 8; |
|
|
427 | } |
|
|
428 | |
|
|
429 | ecb_inline void |
|
|
430 | encode_bool (enc_t *enc, int istrue) |
|
|
431 | { |
|
|
432 | encode_ch (enc, istrue ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE); |
|
|
433 | } |
|
|
434 | |
|
|
435 | // encodes an arrayref containing key-value pairs as CBOR map |
|
|
436 | ecb_inline void |
|
|
437 | encode_array_as_map (enc_t *enc, SV *sv) |
|
|
438 | { |
|
|
439 | if (enc->depth >= enc->cbor.max_depth) |
|
|
440 | croak (ERR_NESTING_EXCEEDED); |
|
|
441 | |
|
|
442 | ++enc->depth; |
|
|
443 | |
|
|
444 | // as_map does error checking for us, but we re-check in case |
|
|
445 | // things have changed. |
|
|
446 | |
|
|
447 | if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV) |
|
|
448 | croak ("CBOR::XS::as_map requires an array reference (did you change the array after calling as_map?)"); |
|
|
449 | |
|
|
450 | AV *av = (AV *)SvRV (sv); |
|
|
451 | int i, len = av_len (av); |
|
|
452 | |
|
|
453 | if (!(len & 1)) |
|
|
454 | croak ("CBOR::XS::as_map requires an even number of elements (did you change the array after calling as_map?)"); |
|
|
455 | |
|
|
456 | encode_uint (enc, MAJOR_MAP, (len + 1) >> 1); |
|
|
457 | |
|
|
458 | for (i = 0; i <= len; ++i) |
|
|
459 | { |
|
|
460 | SV **svp = av_fetch (av, i, 0); |
|
|
461 | encode_sv (enc, svp ? *svp : &PL_sv_undef); |
|
|
462 | } |
|
|
463 | |
|
|
464 | --enc->depth; |
|
|
465 | } |
|
|
466 | |
|
|
467 | ecb_inline void |
|
|
468 | encode_forced (enc_t *enc, UV type, SV *sv) |
|
|
469 | { |
|
|
470 | switch (type) |
|
|
471 | { |
|
|
472 | case AS_CBOR: |
|
|
473 | { |
|
|
474 | STRLEN len; |
|
|
475 | char *str = SvPVbyte (sv, len); |
|
|
476 | |
|
|
477 | need (enc, len); |
|
|
478 | memcpy (enc->cur, str, len); |
|
|
479 | enc->cur += len; |
|
|
480 | } |
|
|
481 | break; |
|
|
482 | |
|
|
483 | case AS_BYTES: |
|
|
484 | { |
|
|
485 | STRLEN len; |
|
|
486 | char *str = SvPVbyte (sv, len); |
|
|
487 | encode_strref (enc, 0, 0, str, len); |
|
|
488 | } |
|
|
489 | break; |
|
|
490 | |
|
|
491 | case AS_TEXT: |
|
|
492 | { |
|
|
493 | STRLEN len; |
|
|
494 | char *str = SvPVutf8 (sv, len); |
|
|
495 | encode_strref (enc, 1, 1, str, len); |
|
|
496 | } |
|
|
497 | break; |
|
|
498 | |
|
|
499 | case AS_INT: encode_int (enc, sv); break; |
|
|
500 | |
|
|
501 | case AS_FLOAT16: encode_float16 (enc, SvNV (sv)); break; |
|
|
502 | case AS_FLOAT32: encode_float32 (enc, SvNV (sv)); break; |
|
|
503 | case AS_FLOAT64: encode_float64 (enc, SvNV (sv)); break; |
|
|
504 | |
|
|
505 | case AS_MAP: encode_array_as_map (enc, sv); break; |
|
|
506 | |
|
|
507 | default: |
|
|
508 | croak ("encountered malformed CBOR::XS::Tagged object"); |
|
|
509 | } |
|
|
510 | } |
182 | |
511 | |
183 | static void |
512 | static void |
184 | encode_av (enc_t *enc, AV *av) |
513 | encode_av (enc_t *enc, AV *av) |
185 | { |
514 | { |
186 | int i, len = av_len (av); |
515 | int i, len = av_len (av); |
… | |
… | |
188 | if (enc->depth >= enc->cbor.max_depth) |
517 | if (enc->depth >= enc->cbor.max_depth) |
189 | croak (ERR_NESTING_EXCEEDED); |
518 | croak (ERR_NESTING_EXCEEDED); |
190 | |
519 | |
191 | ++enc->depth; |
520 | ++enc->depth; |
192 | |
521 | |
193 | encode_uint (enc, 0x80, len + 1); |
522 | encode_uint (enc, MAJOR_ARRAY, len + 1); |
194 | |
523 | |
|
|
524 | if (ecb_expect_false (SvMAGICAL (av))) |
195 | for (i = 0; i <= len; ++i) |
525 | for (i = 0; i <= len; ++i) |
196 | { |
526 | { |
197 | SV **svp = av_fetch (av, i, 0); |
527 | SV **svp = av_fetch (av, i, 0); |
198 | encode_sv (enc, svp ? *svp : &PL_sv_undef); |
528 | encode_sv (enc, svp ? *svp : &PL_sv_undef); |
199 | } |
529 | } |
|
|
530 | else |
|
|
531 | for (i = 0; i <= len; ++i) |
|
|
532 | { |
|
|
533 | SV *sv = AvARRAY (av)[i]; |
|
|
534 | encode_sv (enc, sv ? sv : &PL_sv_undef); |
|
|
535 | } |
200 | |
536 | |
201 | --enc->depth; |
537 | --enc->depth; |
202 | } |
538 | } |
203 | |
539 | |
204 | static void |
540 | static void |
… | |
… | |
212 | ++enc->depth; |
548 | ++enc->depth; |
213 | |
549 | |
214 | int pairs = hv_iterinit (hv); |
550 | int pairs = hv_iterinit (hv); |
215 | int mg = SvMAGICAL (hv); |
551 | int mg = SvMAGICAL (hv); |
216 | |
552 | |
217 | if (mg) |
553 | if (ecb_expect_false (mg)) |
218 | encode_ch (enc, 0xa0 | 31); |
554 | encode_ch (enc, MAJOR_MAP | MINOR_INDEF); |
219 | else |
555 | else |
220 | encode_uint (enc, 0xa0, pairs); |
556 | encode_uint (enc, MAJOR_MAP, pairs); |
221 | |
557 | |
222 | while ((he = hv_iternext (hv))) |
558 | while ((he = hv_iternext (hv))) |
223 | { |
559 | { |
224 | if (HeKLEN (he) == HEf_SVKEY) |
560 | if (HeKLEN (he) == HEf_SVKEY) |
225 | encode_sv (enc, HeSVKEY (he)); |
561 | encode_sv (enc, HeSVKEY (he)); |
226 | else |
562 | else |
227 | encode_str (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he)); |
563 | encode_strref (enc, enc->cbor.flags & (F_TEXT_KEYS | F_TEXT_STRINGS), HeKUTF8 (he), HeKEY (he), HeKLEN (he)); |
228 | |
564 | |
229 | encode_sv (enc, expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he)); |
565 | encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he)); |
230 | } |
566 | } |
231 | |
567 | |
232 | if (mg) |
568 | if (ecb_expect_false (mg)) |
233 | encode_ch (enc, 0xe0 | 31); |
569 | encode_ch (enc, MAJOR_MISC | MINOR_INDEF); |
234 | |
570 | |
235 | --enc->depth; |
571 | --enc->depth; |
236 | } |
572 | } |
237 | |
573 | |
238 | // encode objects, arrays and special \0=false and \1=true values. |
574 | // encode objects, arrays and special \0=false and \1=true values. |
239 | static void |
575 | static void |
240 | encode_rv (enc_t *enc, SV *sv) |
576 | encode_rv (enc_t *enc, SV *sv) |
241 | { |
577 | { |
242 | svtype svt; |
|
|
243 | |
|
|
244 | SvGETMAGIC (sv); |
578 | SvGETMAGIC (sv); |
|
|
579 | |
245 | svt = SvTYPE (sv); |
580 | svtype svt = SvTYPE (sv); |
246 | |
581 | |
247 | if (expect_false (SvOBJECT (sv))) |
582 | if (ecb_expect_false (SvOBJECT (sv))) |
248 | { |
583 | { |
249 | HV *stash = !CBOR_SLOW || cbor_boolean_stash |
584 | HV *boolean_stash = !CBOR_SLOW || types_boolean_stash |
250 | ? cbor_boolean_stash |
585 | ? types_boolean_stash |
|
|
586 | : gv_stashpv ("Types::Serialiser::Boolean", 1); |
|
|
587 | HV *error_stash = !CBOR_SLOW || types_error_stash |
|
|
588 | ? types_error_stash |
|
|
589 | : gv_stashpv ("Types::Serialiser::Error", 1); |
|
|
590 | HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash |
|
|
591 | ? cbor_tagged_stash |
251 | : gv_stashpv ("CBOR::XS::Boolean", 1); |
592 | : gv_stashpv ("CBOR::XS::Tagged" , 1); |
252 | |
593 | |
253 | if (SvSTASH (sv) == stash) |
594 | HV *stash = SvSTASH (sv); |
254 | encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20); |
595 | |
|
|
596 | if (stash == boolean_stash) |
|
|
597 | { |
|
|
598 | encode_bool (enc, SvIV (sv)); |
|
|
599 | return; |
|
|
600 | } |
|
|
601 | else if (stash == error_stash) |
|
|
602 | { |
|
|
603 | encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF); |
|
|
604 | return; |
|
|
605 | } |
|
|
606 | else if (stash == tagged_stash) |
|
|
607 | { |
|
|
608 | if (svt != SVt_PVAV) |
|
|
609 | croak ("encountered CBOR::XS::Tagged object that isn't an array"); |
|
|
610 | |
|
|
611 | switch (av_len ((AV *)sv)) |
|
|
612 | { |
|
|
613 | case 2-1: |
|
|
614 | // actually a tagged value |
|
|
615 | encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1))); |
|
|
616 | encode_sv (enc, *av_fetch ((AV *)sv, 1, 1)); |
|
|
617 | break; |
|
|
618 | |
|
|
619 | case 3-1: |
|
|
620 | // a forced type [value, type, undef] |
|
|
621 | encode_forced (enc, SvUV (*av_fetch ((AV *)sv, 1, 1)), *av_fetch ((AV *)sv, 0, 1)); |
|
|
622 | break; |
|
|
623 | |
|
|
624 | default: |
|
|
625 | croak ("encountered malformed CBOR::XS::Tagged object"); |
|
|
626 | } |
|
|
627 | |
|
|
628 | return; |
|
|
629 | } |
|
|
630 | } |
|
|
631 | |
|
|
632 | if (ecb_expect_false (SvREFCNT (sv) > 1) |
|
|
633 | && ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING)) |
|
|
634 | { |
|
|
635 | if (ecb_expect_false (!enc->shareable)) |
|
|
636 | enc->shareable = (HV *)sv_2mortal ((SV *)newHV ()); |
|
|
637 | |
|
|
638 | SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1); |
|
|
639 | |
|
|
640 | if (SvOK (*svp)) |
|
|
641 | { |
|
|
642 | encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF); |
|
|
643 | encode_uint (enc, MAJOR_POS_INT, SvUV (*svp)); |
|
|
644 | return; |
|
|
645 | } |
255 | else |
646 | else |
256 | { |
647 | { |
257 | #if 0 //TODO |
648 | sv_setuv (*svp, enc->shareable_idx); |
258 | if (enc->cbor.flags & F_CONV_BLESSED) |
649 | ++enc->shareable_idx; |
|
|
650 | encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE); |
|
|
651 | } |
|
|
652 | } |
|
|
653 | |
|
|
654 | if (ecb_expect_false (SvOBJECT (sv))) |
|
|
655 | { |
|
|
656 | HV *stash = SvSTASH (sv); |
|
|
657 | GV *method; |
|
|
658 | |
|
|
659 | if (enc->cbor.flags & F_FORBID_OBJECTS) |
|
|
660 | croak ("encountered object '%s', but forbid_objects is enabled", |
|
|
661 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
|
|
662 | else if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0))) |
259 | { |
663 | { |
|
|
664 | dSP; |
|
|
665 | |
|
|
666 | ENTER; SAVETMPS; |
|
|
667 | PUSHMARK (SP); |
260 | // we re-bless the reference to get overload and other niceties right |
668 | // we re-bless the reference to get overload and other niceties right |
261 | GV *to_cbor = gv_fetchmethod_autoload (SvSTASH (sv), "TO_CBOR", 0); |
|
|
262 | |
|
|
263 | if (to_cbor) |
|
|
264 | { |
|
|
265 | dSP; |
|
|
266 | |
|
|
267 | ENTER; SAVETMPS; PUSHMARK (SP); |
|
|
268 | XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), SvSTASH (sv))); |
669 | XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash)); |
269 | |
670 | |
270 | // calling with G_SCALAR ensures that we always get a 1 return value |
|
|
271 | PUTBACK; |
671 | PUTBACK; |
|
|
672 | // G_SCALAR ensures that return value is 1 |
272 | call_sv ((SV *)GvCV (to_cbor), G_SCALAR); |
673 | call_sv ((SV *)GvCV (method), G_SCALAR); |
273 | SPAGAIN; |
674 | SPAGAIN; |
274 | |
675 | |
275 | // catch this surprisingly common error |
676 | // catch this surprisingly common error |
276 | if (SvROK (TOPs) && SvRV (TOPs) == sv) |
677 | if (SvROK (TOPs) && SvRV (TOPs) == sv) |
277 | croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (SvSTASH (sv))); |
678 | croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash)); |
278 | |
679 | |
279 | sv = POPs; |
|
|
280 | PUTBACK; |
|
|
281 | |
|
|
282 | encode_sv (enc, sv); |
680 | encode_sv (enc, POPs); |
283 | |
681 | |
|
|
682 | PUTBACK; |
|
|
683 | |
284 | FREETMPS; LEAVE; |
684 | FREETMPS; LEAVE; |
285 | } |
685 | } |
286 | else if (enc->cbor.flags & F_ALLOW_BLESSED) |
686 | else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0) |
287 | encode_str (enc, "null", 4, 0); |
687 | { |
288 | else |
688 | dSP; |
289 | croak ("encountered object '%s', but neither allow_blessed enabled nor TO_CBOR method available on it", |
689 | |
290 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
690 | ENTER; SAVETMPS; |
|
|
691 | PUSHMARK (SP); |
|
|
692 | EXTEND (SP, 2); |
|
|
693 | // we re-bless the reference to get overload and other niceties right |
|
|
694 | PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash)); |
|
|
695 | PUSHs (sv_cbor); |
|
|
696 | |
|
|
697 | PUTBACK; |
|
|
698 | int count = call_sv ((SV *)GvCV (method), G_ARRAY); |
|
|
699 | SPAGAIN; |
|
|
700 | |
|
|
701 | // catch this surprisingly common error |
|
|
702 | if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv) |
|
|
703 | croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash)); |
|
|
704 | |
|
|
705 | encode_tag (enc, CBOR_TAG_PERL_OBJECT); |
|
|
706 | encode_uint (enc, MAJOR_ARRAY, count + 1); |
|
|
707 | encode_strref (enc, 0, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash)); |
|
|
708 | |
|
|
709 | { |
|
|
710 | int i; |
|
|
711 | |
|
|
712 | for (i = 0; i < count; ++i) |
|
|
713 | encode_sv (enc, SP[i + 1 - count]); |
|
|
714 | |
|
|
715 | SP -= count; |
291 | } |
716 | } |
292 | else if (enc->cbor.flags & F_ALLOW_BLESSED) |
717 | |
293 | encode_str (enc, "null", 4, 0); |
718 | PUTBACK; |
|
|
719 | |
|
|
720 | FREETMPS; LEAVE; |
|
|
721 | } |
294 | else |
722 | else |
295 | croak ("encountered object '%s', but neither allow_blessed nor convert_blessed settings are enabled", |
723 | croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it", |
296 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
724 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
297 | #endif |
|
|
298 | } |
|
|
299 | } |
725 | } |
300 | else if (svt == SVt_PVHV) |
726 | else if (svt == SVt_PVHV) |
301 | encode_hv (enc, (HV *)sv); |
727 | encode_hv (enc, (HV *)sv); |
302 | else if (svt == SVt_PVAV) |
728 | else if (svt == SVt_PVAV) |
303 | encode_av (enc, (AV *)sv); |
729 | encode_av (enc, (AV *)sv); |
304 | else if (svt < SVt_PVAV) |
|
|
305 | { |
|
|
306 | STRLEN len = 0; |
|
|
307 | char *pv = svt ? SvPV (sv, len) : 0; |
|
|
308 | |
|
|
309 | if (len == 1 && *pv == '1') |
|
|
310 | encode_ch (enc, 0xe0 | 21); |
|
|
311 | else if (len == 1 && *pv == '0') |
|
|
312 | encode_ch (enc, 0xe0 | 20); |
|
|
313 | else if (enc->cbor.flags & F_ALLOW_UNKNOWN) |
|
|
314 | encode_ch (enc, 0xe0 | 23); |
|
|
315 | else |
|
|
316 | croak ("cannot encode reference to scalar '%s' unless the scalar is 0 or 1", |
|
|
317 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
|
|
318 | } |
|
|
319 | else if (enc->cbor.flags & F_ALLOW_UNKNOWN) |
|
|
320 | encode_ch (enc, 0xe0 | 23); |
|
|
321 | else |
730 | else |
322 | croak ("encountered %s, but CBOR can only represent references to arrays or hashes", |
731 | { |
323 | SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
732 | encode_tag (enc, CBOR_TAG_INDIRECTION); |
|
|
733 | encode_sv (enc, sv); |
|
|
734 | } |
324 | } |
735 | } |
325 | |
736 | |
326 | static void |
737 | static void |
327 | encode_nv (enc_t *enc, SV *sv) |
738 | encode_nv (enc_t *enc, SV *sv) |
328 | { |
739 | { |
329 | double nv = SvNVX (sv); |
740 | double nv = SvNVX (sv); |
330 | |
741 | |
331 | need (enc, 9); |
742 | need (enc, 9); |
332 | |
743 | |
333 | if (expect_false (nv == (U32)nv)) |
744 | if (ecb_expect_false (nv == (NV)(U32)nv)) |
334 | encode_uint (enc, 0x00, (U32)nv); |
745 | encode_uint (enc, MAJOR_POS_INT, (U32)nv); |
335 | //TODO: maybe I32? |
746 | //TODO: maybe I32? |
336 | else if (expect_false (nv == (float)nv)) |
747 | else if (ecb_expect_false (nv == (float)nv)) |
337 | { |
748 | encode_float32 (enc, nv); |
338 | uint32_t fp = ecb_float_to_binary32 (nv); |
|
|
339 | |
|
|
340 | *enc->cur++ = 0xe0 | 26; |
|
|
341 | |
|
|
342 | if (!ecb_big_endian ()) |
|
|
343 | fp = ecb_bswap32 (fp); |
|
|
344 | |
|
|
345 | memcpy (enc->cur, &fp, 4); |
|
|
346 | enc->cur += 4; |
|
|
347 | } |
|
|
348 | else |
749 | else |
349 | { |
750 | encode_float64 (enc, nv); |
350 | uint64_t fp = ecb_double_to_binary64 (nv); |
|
|
351 | |
|
|
352 | *enc->cur++ = 0xe0 | 27; |
|
|
353 | |
|
|
354 | if (!ecb_big_endian ()) |
|
|
355 | fp = ecb_bswap64 (fp); |
|
|
356 | |
|
|
357 | memcpy (enc->cur, &fp, 8); |
|
|
358 | enc->cur += 8; |
|
|
359 | } |
|
|
360 | } |
751 | } |
361 | |
752 | |
362 | static void |
753 | static void |
363 | encode_sv (enc_t *enc, SV *sv) |
754 | encode_sv (enc_t *enc, SV *sv) |
364 | { |
755 | { |
… | |
… | |
366 | |
757 | |
367 | if (SvPOKp (sv)) |
758 | if (SvPOKp (sv)) |
368 | { |
759 | { |
369 | STRLEN len; |
760 | STRLEN len; |
370 | char *str = SvPV (sv, len); |
761 | char *str = SvPV (sv, len); |
371 | encode_str (enc, SvUTF8 (sv), str, len); |
762 | encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len); |
372 | } |
763 | } |
373 | else if (SvNOKp (sv)) |
764 | else if (SvNOKp (sv)) |
374 | encode_nv (enc, sv); |
765 | encode_nv (enc, sv); |
375 | else if (SvIOKp (sv)) |
766 | else if (SvIOKp (sv)) |
376 | { |
767 | encode_int (enc, sv); |
377 | if (SvIsUV (sv)) |
|
|
378 | encode_uint (enc, 0x00, SvUVX (sv)); |
|
|
379 | else if (SvIVX (sv) >= 0) |
|
|
380 | encode_uint (enc, 0x00, SvIVX (sv)); |
|
|
381 | else |
|
|
382 | encode_uint (enc, 0x20, -(SvIVX (sv) + 1)); |
|
|
383 | } |
|
|
384 | else if (SvROK (sv)) |
768 | else if (SvROK (sv)) |
385 | encode_rv (enc, SvRV (sv)); |
769 | encode_rv (enc, SvRV (sv)); |
386 | else if (!SvOK (sv)) |
770 | else if (!SvOK (sv)) |
387 | encode_ch (enc, 0xe0 | 22); |
771 | encode_ch (enc, MAJOR_MISC | SIMPLE_NULL); |
388 | else if (enc->cbor.flags & F_ALLOW_UNKNOWN) |
772 | else if (enc->cbor.flags & F_ALLOW_UNKNOWN) |
389 | encode_ch (enc, 0xe0 | 23); |
773 | encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF); |
390 | else |
774 | else |
391 | croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data", |
775 | croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data", |
392 | SvPV_nolen (sv), (unsigned int)SvFLAGS (sv)); |
776 | SvPV_nolen (sv), (unsigned int)SvFLAGS (sv)); |
393 | } |
777 | } |
394 | |
778 | |
395 | static SV * |
779 | static SV * |
396 | encode_cbor (SV *scalar, CBOR *cbor) |
780 | encode_cbor (SV *scalar, CBOR *cbor) |
397 | { |
781 | { |
398 | enc_t enc; |
782 | enc_t enc = { 0 }; |
399 | |
783 | |
400 | enc.cbor = *cbor; |
784 | enc.cbor = *cbor; |
401 | enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE)); |
785 | enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE)); |
402 | enc.cur = SvPVX (enc.sv); |
786 | enc.cur = SvPVX (enc.sv); |
403 | enc.end = SvEND (enc.sv); |
787 | enc.end = SvEND (enc.sv); |
404 | enc.depth = 0; |
|
|
405 | |
788 | |
406 | SvPOK_only (enc.sv); |
789 | SvPOK_only (enc.sv); |
|
|
790 | |
|
|
791 | if (cbor->flags & F_PACK_STRINGS) |
|
|
792 | { |
|
|
793 | encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE); |
|
|
794 | enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ()); |
|
|
795 | enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ()); |
|
|
796 | } |
|
|
797 | |
407 | encode_sv (&enc, scalar); |
798 | encode_sv (&enc, scalar); |
408 | |
799 | |
409 | SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv)); |
800 | SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv)); |
410 | *SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings |
801 | *SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings |
411 | |
802 | |
… | |
… | |
425 | U8 *end; // end of input string |
816 | U8 *end; // end of input string |
426 | const char *err; // parse error, if != 0 |
817 | const char *err; // parse error, if != 0 |
427 | CBOR cbor; |
818 | CBOR cbor; |
428 | U32 depth; // recursion depth |
819 | U32 depth; // recursion depth |
429 | U32 maxdepth; // recursion depth limit |
820 | U32 maxdepth; // recursion depth limit |
|
|
821 | AV *shareable; |
|
|
822 | AV *stringref; |
|
|
823 | SV *decode_tagged; |
|
|
824 | SV *err_sv; // optional sv for error, needs to be freed |
430 | } dec_t; |
825 | } dec_t; |
431 | |
826 | |
432 | #define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE |
827 | // set dec->err to ERRSV |
|
|
828 | ecb_cold static void |
|
|
829 | err_errsv (dec_t *dec) |
|
|
830 | { |
|
|
831 | if (!dec->err) |
|
|
832 | { |
|
|
833 | dec->err_sv = newSVsv (ERRSV); |
433 | |
834 | |
434 | #define WANT(len) if (expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data"); |
835 | // chop off the trailing \n |
|
|
836 | SvCUR_set (dec->err_sv, SvCUR (dec->err_sv) - 1); |
|
|
837 | *SvEND (dec->err_sv) = 0; |
435 | |
838 | |
|
|
839 | dec->err = SvPVutf8_nolen (dec->err_sv); |
|
|
840 | } |
|
|
841 | } |
|
|
842 | |
|
|
843 | // the following functions are used to reduce code size and help the compiler to optimise |
|
|
844 | ecb_cold static void |
|
|
845 | err_set (dec_t *dec, const char *reason) |
|
|
846 | { |
|
|
847 | if (!dec->err) |
|
|
848 | dec->err = reason; |
|
|
849 | } |
|
|
850 | |
|
|
851 | ecb_cold static void |
|
|
852 | err_unexpected_end (dec_t *dec) |
|
|
853 | { |
|
|
854 | err_set (dec, "unexpected end of CBOR data"); |
|
|
855 | } |
|
|
856 | |
|
|
857 | #define ERR_DO(do) SB do; goto fail; SE |
|
|
858 | #define ERR(reason) ERR_DO (err_set (dec, reason)) |
|
|
859 | #define ERR_ERRSV ERR_DO (err_errsv (dec)) |
|
|
860 | |
|
|
861 | #define WANT(len) if (ecb_expect_false ((uintptr_t)(dec->end - dec->cur) < (STRLEN)len)) ERR_DO (err_unexpected_end (dec)) |
|
|
862 | |
436 | #define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED) |
863 | #define DEC_INC_DEPTH if (ecb_expect_false (++dec->depth > dec->cbor.max_depth)) ERR (ERR_NESTING_EXCEEDED) |
437 | #define DEC_DEC_DEPTH --dec->depth |
864 | #define DEC_DEC_DEPTH --dec->depth |
438 | |
865 | |
439 | static UV |
866 | static UV |
440 | decode_uint (dec_t *dec) |
867 | decode_uint (dec_t *dec) |
441 | { |
868 | { |
442 | switch (*dec->cur & 31) |
869 | U8 m = *dec->cur & MINOR_MASK; |
443 | { |
870 | ++dec->cur; |
444 | case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7: |
|
|
445 | case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15: |
|
|
446 | case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23: |
|
|
447 | return *dec->cur++ & 31; |
|
|
448 | |
871 | |
449 | case 24: |
872 | if (ecb_expect_true (m < LENGTH_EXT1)) |
|
|
873 | return m; |
|
|
874 | else if (ecb_expect_true (m == LENGTH_EXT1)) |
|
|
875 | { |
450 | WANT (2); |
876 | WANT (1); |
451 | dec->cur += 2; |
877 | dec->cur += 1; |
452 | return dec->cur[-1]; |
878 | return dec->cur[-1]; |
453 | |
879 | } |
454 | case 25: |
880 | else if (ecb_expect_true (m == LENGTH_EXT2)) |
|
|
881 | { |
455 | WANT (3); |
882 | WANT (2); |
456 | dec->cur += 3; |
883 | dec->cur += 2; |
457 | return (((UV)dec->cur[-2]) << 8) |
884 | return (((UV)dec->cur[-2]) << 8) |
458 | | ((UV)dec->cur[-1]); |
885 | | ((UV)dec->cur[-1]); |
459 | |
886 | } |
460 | case 26: |
887 | else if (ecb_expect_true (m == LENGTH_EXT4)) |
|
|
888 | { |
461 | WANT (5); |
889 | WANT (4); |
462 | dec->cur += 5; |
890 | dec->cur += 4; |
463 | return (((UV)dec->cur[-4]) << 24) |
891 | return (((UV)dec->cur[-4]) << 24) |
464 | | (((UV)dec->cur[-3]) << 16) |
892 | | (((UV)dec->cur[-3]) << 16) |
465 | | (((UV)dec->cur[-2]) << 8) |
893 | | (((UV)dec->cur[-2]) << 8) |
466 | | ((UV)dec->cur[-1]); |
894 | | ((UV)dec->cur[-1]); |
467 | |
895 | } |
468 | case 27: |
896 | else if (ecb_expect_true (m == LENGTH_EXT8)) |
|
|
897 | { |
469 | WANT (9); |
898 | WANT (8); |
470 | dec->cur += 9; |
899 | dec->cur += 8; |
|
|
900 | |
|
|
901 | return |
|
|
902 | #if UVSIZE < 8 |
|
|
903 | 0 |
|
|
904 | #else |
471 | return (((UV)dec->cur[-8]) << 56) |
905 | (((UV)dec->cur[-8]) << 56) |
472 | | (((UV)dec->cur[-7]) << 48) |
906 | | (((UV)dec->cur[-7]) << 48) |
473 | | (((UV)dec->cur[-6]) << 40) |
907 | | (((UV)dec->cur[-6]) << 40) |
474 | | (((UV)dec->cur[-5]) << 32) |
908 | | (((UV)dec->cur[-5]) << 32) |
|
|
909 | #endif |
475 | | (((UV)dec->cur[-4]) << 24) |
910 | | (((UV)dec->cur[-4]) << 24) |
476 | | (((UV)dec->cur[-3]) << 16) |
911 | | (((UV)dec->cur[-3]) << 16) |
477 | | (((UV)dec->cur[-2]) << 8) |
912 | | (((UV)dec->cur[-2]) << 8) |
478 | | ((UV)dec->cur[-1]); |
913 | | ((UV)dec->cur[-1]); |
479 | |
914 | } |
480 | default: |
915 | else |
481 | ERR ("corrupted CBOR data (unsupported integer minor encoding)"); |
916 | ERR ("corrupted CBOR data (unsupported integer minor encoding)"); |
482 | } |
|
|
483 | |
917 | |
484 | fail: |
918 | fail: |
485 | return 0; |
919 | return 0; |
486 | } |
920 | } |
487 | |
921 | |
… | |
… | |
492 | { |
926 | { |
493 | AV *av = newAV (); |
927 | AV *av = newAV (); |
494 | |
928 | |
495 | DEC_INC_DEPTH; |
929 | DEC_INC_DEPTH; |
496 | |
930 | |
497 | if ((*dec->cur & 31) == 31) |
931 | if (*dec->cur == (MAJOR_ARRAY | MINOR_INDEF)) |
498 | { |
932 | { |
499 | ++dec->cur; |
933 | ++dec->cur; |
500 | |
934 | |
501 | for (;;) |
935 | for (;;) |
502 | { |
936 | { |
503 | WANT (1); |
937 | WANT (1); |
504 | |
938 | |
505 | if (*dec->cur == (0xe0 | 31)) |
939 | if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err) |
506 | { |
940 | { |
507 | ++dec->cur; |
941 | ++dec->cur; |
508 | break; |
942 | break; |
509 | } |
943 | } |
510 | |
944 | |
511 | av_push (av, decode_sv (dec)); |
945 | av_push (av, decode_sv (dec)); |
512 | } |
946 | } |
513 | } |
947 | } |
514 | else |
948 | else |
515 | { |
949 | { |
516 | int i, len = decode_uint (dec); |
950 | UV i, len = decode_uint (dec); |
517 | |
951 | |
|
|
952 | WANT (len); // complexity check for av_fill - need at least one byte per value, do not allow supersize arrays |
518 | av_fill (av, len - 1); |
953 | av_fill (av, len - 1); |
519 | |
954 | |
520 | for (i = 0; i < len; ++i) |
955 | for (i = 0; i < len; ++i) |
521 | AvARRAY (av)[i] = decode_sv (dec); |
956 | AvARRAY (av)[i] = decode_sv (dec); |
522 | } |
957 | } |
523 | |
958 | |
524 | DEC_DEC_DEPTH; |
959 | DEC_DEC_DEPTH; |
525 | return newRV_noinc ((SV *)av); |
960 | return newRV_noinc ((SV *)av); |
526 | |
961 | |
527 | fail: |
962 | fail: |
528 | SvREFCNT_dec (av); |
963 | SvREFCNT_dec_NN (av); |
529 | DEC_DEC_DEPTH; |
964 | DEC_DEC_DEPTH; |
530 | return &PL_sv_undef; |
965 | return &PL_sv_undef; |
531 | } |
966 | } |
532 | |
967 | |
|
|
968 | static void |
|
|
969 | decode_he (dec_t *dec, HV *hv) |
|
|
970 | { |
|
|
971 | // for speed reasons, we specialcase single-string |
|
|
972 | // byte or utf-8 strings as keys, but only when !stringref |
|
|
973 | |
|
|
974 | if (ecb_expect_true (!dec->stringref)) |
|
|
975 | if (ecb_expect_true ((U8)(*dec->cur - MAJOR_BYTES) <= LENGTH_EXT8)) |
|
|
976 | { |
|
|
977 | STRLEN len = decode_uint (dec); |
|
|
978 | char *key = (char *)dec->cur; |
|
|
979 | |
|
|
980 | WANT (len); |
|
|
981 | dec->cur += len; |
|
|
982 | |
|
|
983 | hv_store (hv, key, len, decode_sv (dec), 0); |
|
|
984 | |
|
|
985 | return; |
|
|
986 | } |
|
|
987 | else if (ecb_expect_true ((U8)(*dec->cur - MAJOR_TEXT) <= LENGTH_EXT8)) |
|
|
988 | { |
|
|
989 | STRLEN len = decode_uint (dec); |
|
|
990 | char *key = (char *)dec->cur; |
|
|
991 | |
|
|
992 | WANT (len); |
|
|
993 | dec->cur += len; |
|
|
994 | |
|
|
995 | if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8)) |
|
|
996 | if (!cbor_is_utf8_string ((U8 *)key, len)) |
|
|
997 | ERR ("corrupted CBOR data (invalid UTF-8 in map key)"); |
|
|
998 | |
|
|
999 | hv_store (hv, key, -len, decode_sv (dec), 0); |
|
|
1000 | |
|
|
1001 | return; |
|
|
1002 | } |
|
|
1003 | |
|
|
1004 | SV *k = decode_sv (dec); |
|
|
1005 | SV *v = decode_sv (dec); |
|
|
1006 | |
|
|
1007 | // we leak memory if uncaught exceptions are thrown by random magical |
|
|
1008 | // methods, and this is hopefully the only place where it can happen, |
|
|
1009 | // so if there is a chance of an exception, take the very slow path. |
|
|
1010 | // since catching exceptions is "undocumented/internal/forbidden" by |
|
|
1011 | // the new p5p powers, we need to call out to a perl function :/ |
|
|
1012 | if (ecb_expect_false (SvAMAGIC (k))) |
|
|
1013 | { |
|
|
1014 | dSP; |
|
|
1015 | |
|
|
1016 | ENTER; SAVETMPS; |
|
|
1017 | PUSHMARK (SP); |
|
|
1018 | EXTEND (SP, 3); |
|
|
1019 | PUSHs (sv_2mortal (newRV_inc ((SV *)hv))); |
|
|
1020 | PUSHs (sv_2mortal (k)); |
|
|
1021 | PUSHs (sv_2mortal (v)); |
|
|
1022 | |
|
|
1023 | PUTBACK; |
|
|
1024 | call_pv ("CBOR::XS::_hv_store", G_VOID | G_DISCARD | G_EVAL); |
|
|
1025 | SPAGAIN; |
|
|
1026 | |
|
|
1027 | FREETMPS; LEAVE; |
|
|
1028 | |
|
|
1029 | if (SvTRUE (ERRSV)) |
|
|
1030 | ERR_ERRSV; |
|
|
1031 | |
|
|
1032 | return; |
|
|
1033 | } |
|
|
1034 | |
|
|
1035 | hv_store_ent (hv, k, v, 0); |
|
|
1036 | SvREFCNT_dec_NN (k); |
|
|
1037 | |
|
|
1038 | fail: |
|
|
1039 | ; |
|
|
1040 | } |
|
|
1041 | |
533 | static SV * |
1042 | static SV * |
534 | decode_hv (dec_t *dec) |
1043 | decode_hv (dec_t *dec) |
535 | { |
1044 | { |
536 | HV *hv = newHV (); |
1045 | HV *hv = newHV (); |
537 | |
1046 | |
538 | DEC_INC_DEPTH; |
1047 | DEC_INC_DEPTH; |
539 | |
1048 | |
540 | if ((*dec->cur & 31) == 31) |
1049 | if (*dec->cur == (MAJOR_MAP | MINOR_INDEF)) |
541 | { |
1050 | { |
542 | ++dec->cur; |
1051 | ++dec->cur; |
543 | |
1052 | |
544 | for (;;) |
1053 | for (;;) |
545 | { |
1054 | { |
546 | WANT (1); |
1055 | WANT (1); |
547 | |
1056 | |
548 | if (*dec->cur == (0xe0 | 31)) |
1057 | if (*dec->cur == (MAJOR_MISC | MINOR_INDEF) || dec->err) |
549 | { |
1058 | { |
550 | ++dec->cur; |
1059 | ++dec->cur; |
551 | break; |
1060 | break; |
552 | } |
1061 | } |
553 | |
1062 | |
554 | SV *k = decode_sv (dec); |
1063 | decode_he (dec, hv); |
555 | SV *v = decode_sv (dec); |
|
|
556 | |
|
|
557 | hv_store_ent (hv, k, v, 0); |
|
|
558 | } |
1064 | } |
559 | } |
1065 | } |
560 | else |
1066 | else |
561 | { |
1067 | { |
562 | int len = decode_uint (dec); |
1068 | UV pairs = decode_uint (dec); |
563 | |
1069 | |
|
|
1070 | WANT (pairs); // complexity check - need at least one byte per value, do not allow supersize hashes |
|
|
1071 | |
564 | while (len--) |
1072 | while (pairs--) |
565 | { |
1073 | decode_he (dec, hv); |
566 | SV *k = decode_sv (dec); |
|
|
567 | SV *v = decode_sv (dec); |
|
|
568 | |
|
|
569 | hv_store_ent (hv, k, v, 0); |
|
|
570 | } |
|
|
571 | } |
1074 | } |
572 | |
1075 | |
573 | DEC_DEC_DEPTH; |
1076 | DEC_DEC_DEPTH; |
574 | return newRV_noinc ((SV *)hv); |
1077 | return newRV_noinc ((SV *)hv); |
575 | |
1078 | |
576 | #if 0 |
1079 | fail: |
577 | SV *sv; |
1080 | SvREFCNT_dec_NN (hv); |
578 | HV *hv = newHV (); |
|
|
579 | |
|
|
580 | DEC_INC_DEPTH; |
1081 | DEC_DEC_DEPTH; |
581 | decode_ws (dec); |
1082 | return &PL_sv_undef; |
|
|
1083 | } |
582 | |
1084 | |
583 | for (;;) |
1085 | static SV * |
584 | { |
1086 | decode_str (dec_t *dec, int utf8) |
585 | // heuristic: assume that |
1087 | { |
586 | // a) decode_str + hv_store_ent are abysmally slow. |
1088 | SV *sv = 0; |
587 | // b) most hash keys are short, simple ascii text. |
1089 | |
588 | // => try to "fast-match" such strings to avoid |
1090 | if (ecb_expect_false ((*dec->cur & MINOR_MASK) == MINOR_INDEF)) |
589 | // the overhead of decode_str + hv_store_ent. |
|
|
590 | { |
1091 | { |
591 | SV *value; |
1092 | // indefinite length strings |
592 | char *p = dec->cur; |
1093 | ++dec->cur; |
593 | char *e = p + 24; // only try up to 24 bytes |
|
|
594 | |
1094 | |
|
|
1095 | U8 major = *dec->cur & MAJOR_MISC; |
|
|
1096 | |
|
|
1097 | sv = newSVpvn ("", 0); |
|
|
1098 | |
595 | for (;;) |
1099 | for (;;) |
596 | { |
1100 | { |
597 | // the >= 0x80 is false on most architectures |
1101 | WANT (1); |
598 | if (p == e || *p < 0x20 || *p >= 0x80 || *p == '\\') |
1102 | |
|
|
1103 | if ((*dec->cur - major) > LENGTH_EXT8) |
|
|
1104 | if (*dec->cur == (MAJOR_MISC | MINOR_INDEF)) |
599 | { |
1105 | { |
600 | // slow path, back up and use decode_str |
1106 | ++dec->cur; |
601 | SV *key = decode_str (dec); |
|
|
602 | if (!key) |
|
|
603 | goto fail; |
|
|
604 | |
|
|
605 | decode_ws (dec); EXPECT_CH (':'); |
|
|
606 | |
|
|
607 | decode_ws (dec); |
|
|
608 | value = decode_sv (dec); |
|
|
609 | if (!value) |
|
|
610 | { |
|
|
611 | SvREFCNT_dec (key); |
|
|
612 | goto fail; |
|
|
613 | } |
|
|
614 | |
|
|
615 | hv_store_ent (hv, key, value, 0); |
|
|
616 | SvREFCNT_dec (key); |
|
|
617 | |
|
|
618 | break; |
1107 | break; |
619 | } |
1108 | } |
620 | else if (*p == '"') |
|
|
621 | { |
|
|
622 | // fast path, got a simple key |
|
|
623 | char *key = dec->cur; |
|
|
624 | int len = p - key; |
|
|
625 | dec->cur = p + 1; |
|
|
626 | |
|
|
627 | decode_ws (dec); EXPECT_CH (':'); |
|
|
628 | |
|
|
629 | decode_ws (dec); |
|
|
630 | value = decode_sv (dec); |
|
|
631 | if (!value) |
|
|
632 | goto fail; |
|
|
633 | |
|
|
634 | hv_store (hv, key, len, value, 0); |
|
|
635 | |
|
|
636 | break; |
|
|
637 | } |
|
|
638 | |
|
|
639 | ++p; |
|
|
640 | } |
|
|
641 | } |
|
|
642 | |
|
|
643 | decode_ws (dec); |
|
|
644 | |
|
|
645 | if (*dec->cur == '}') |
|
|
646 | { |
|
|
647 | ++dec->cur; |
|
|
648 | break; |
|
|
649 | } |
|
|
650 | |
|
|
651 | if (*dec->cur != ',') |
|
|
652 | ERR (", or } expected while parsing object/hash"); |
|
|
653 | |
|
|
654 | ++dec->cur; |
|
|
655 | |
|
|
656 | decode_ws (dec); |
|
|
657 | |
|
|
658 | if (*dec->cur == '}' && dec->cbor.flags & F_RELAXED) |
|
|
659 | { |
|
|
660 | ++dec->cur; |
|
|
661 | break; |
|
|
662 | } |
|
|
663 | } |
|
|
664 | |
|
|
665 | DEC_DEC_DEPTH; |
|
|
666 | sv = newRV_noinc ((SV *)hv); |
|
|
667 | |
|
|
668 | // check filter callbacks |
|
|
669 | if (dec->cbor.flags & F_HOOK) |
|
|
670 | { |
|
|
671 | if (dec->cbor.cb_sk_object && HvKEYS (hv) == 1) |
|
|
672 | { |
|
|
673 | HE *cb, *he; |
|
|
674 | |
|
|
675 | hv_iterinit (hv); |
|
|
676 | he = hv_iternext (hv); |
|
|
677 | hv_iterinit (hv); |
|
|
678 | |
|
|
679 | // the next line creates a mortal sv each time its called. |
|
|
680 | // might want to optimise this for common cases. |
|
|
681 | cb = hv_fetch_ent (dec->cbor.cb_sk_object, hv_iterkeysv (he), 0, 0); |
|
|
682 | |
|
|
683 | if (cb) |
|
|
684 | { |
1109 | else |
685 | dSP; |
1110 | ERR ("corrupted CBOR data (invalid chunks in indefinite length string)"); |
686 | int count; |
|
|
687 | |
1111 | |
688 | ENTER; SAVETMPS; PUSHMARK (SP); |
1112 | STRLEN len = decode_uint (dec); |
689 | XPUSHs (HeVAL (he)); |
|
|
690 | sv_2mortal (sv); |
|
|
691 | |
1113 | |
692 | PUTBACK; count = call_sv (HeVAL (cb), G_ARRAY); SPAGAIN; |
|
|
693 | |
|
|
694 | if (count == 1) |
|
|
695 | { |
|
|
696 | sv = newSVsv (POPs); |
|
|
697 | FREETMPS; LEAVE; |
|
|
698 | return sv; |
|
|
699 | } |
|
|
700 | |
|
|
701 | SvREFCNT_inc (sv); |
|
|
702 | FREETMPS; LEAVE; |
|
|
703 | } |
|
|
704 | } |
|
|
705 | |
|
|
706 | if (dec->cbor.cb_object) |
|
|
707 | { |
|
|
708 | dSP; |
|
|
709 | int count; |
|
|
710 | |
|
|
711 | ENTER; SAVETMPS; PUSHMARK (SP); |
|
|
712 | XPUSHs (sv_2mortal (sv)); |
|
|
713 | |
|
|
714 | PUTBACK; count = call_sv (dec->cbor.cb_object, G_ARRAY); SPAGAIN; |
|
|
715 | |
|
|
716 | if (count == 1) |
|
|
717 | { |
|
|
718 | sv = newSVsv (POPs); |
|
|
719 | FREETMPS; LEAVE; |
|
|
720 | return sv; |
|
|
721 | } |
|
|
722 | |
|
|
723 | SvREFCNT_inc (sv); |
|
|
724 | FREETMPS; LEAVE; |
|
|
725 | } |
|
|
726 | } |
|
|
727 | |
|
|
728 | return sv; |
|
|
729 | #endif |
|
|
730 | |
|
|
731 | fail: |
|
|
732 | SvREFCNT_dec (hv); |
|
|
733 | DEC_DEC_DEPTH; |
|
|
734 | return &PL_sv_undef; |
|
|
735 | } |
|
|
736 | |
|
|
737 | static SV * |
|
|
738 | decode_str (dec_t *dec, int utf8) |
|
|
739 | { |
|
|
740 | SV *sv; |
|
|
741 | |
|
|
742 | if ((*dec->cur & 31) == 31) |
|
|
743 | { |
|
|
744 | ++dec->cur; |
|
|
745 | |
|
|
746 | sv = newSVpvn ("", 0); |
|
|
747 | |
|
|
748 | // not very fast, and certainly not robust against illegal input |
|
|
749 | for (;;) |
|
|
750 | { |
|
|
751 | WANT (1); |
1114 | WANT (len); |
752 | |
1115 | sv_catpvn (sv, dec->cur, len); |
753 | if (*dec->cur == (0xe0 | 31)) |
1116 | dec->cur += len; |
754 | { |
|
|
755 | ++dec->cur; |
|
|
756 | break; |
|
|
757 | } |
|
|
758 | |
|
|
759 | SV *sv2 = decode_sv (dec); |
|
|
760 | sv_catsv (sv, sv2); |
|
|
761 | } |
1117 | } |
762 | } |
1118 | } |
763 | else |
1119 | else |
764 | { |
1120 | { |
765 | STRLEN len = decode_uint (dec); |
1121 | STRLEN len = decode_uint (dec); |
766 | |
1122 | |
767 | WANT (len); |
1123 | WANT (len); |
768 | sv = newSVpvn (dec->cur, len); |
1124 | sv = newSVpvn (dec->cur, len); |
769 | dec->cur += len; |
1125 | dec->cur += len; |
|
|
1126 | |
|
|
1127 | if (ecb_expect_false (dec->stringref) |
|
|
1128 | && SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1)) |
|
|
1129 | av_push (dec->stringref, SvREFCNT_inc_NN (sv)); |
770 | } |
1130 | } |
771 | |
1131 | |
772 | if (utf8) |
1132 | if (utf8) |
|
|
1133 | { |
|
|
1134 | if (ecb_expect_false (dec->cbor.flags & F_VALIDATE_UTF8)) |
|
|
1135 | if (!cbor_is_utf8_string (SvPVX (sv), SvCUR (sv))) |
|
|
1136 | ERR ("corrupted CBOR data (invalid UTF-8 in text string)"); |
|
|
1137 | |
773 | SvUTF8_on (sv); |
1138 | SvUTF8_on (sv); |
|
|
1139 | } |
774 | |
1140 | |
775 | return sv; |
1141 | return sv; |
776 | |
1142 | |
777 | fail: |
1143 | fail: |
|
|
1144 | SvREFCNT_dec (sv); |
778 | return &PL_sv_undef; |
1145 | return &PL_sv_undef; |
779 | } |
1146 | } |
780 | |
1147 | |
781 | static SV * |
1148 | static SV * |
782 | decode_tagged (dec_t *dec) |
1149 | decode_tagged (dec_t *dec) |
783 | { |
1150 | { |
|
|
1151 | SV *sv = 0; |
784 | UV tag = decode_uint (dec); |
1152 | UV tag = decode_uint (dec); |
|
|
1153 | |
|
|
1154 | WANT (1); |
|
|
1155 | |
|
|
1156 | switch (tag) |
|
|
1157 | { |
|
|
1158 | case CBOR_TAG_MAGIC: |
785 | SV *sv = decode_sv (dec); |
1159 | sv = decode_sv (dec); |
|
|
1160 | break; |
786 | |
1161 | |
787 | if (tag == 55799) // 2.4.5 Self-Describe CBOR |
1162 | case CBOR_TAG_INDIRECTION: |
|
|
1163 | sv = newRV_noinc (decode_sv (dec)); |
|
|
1164 | break; |
|
|
1165 | |
|
|
1166 | case CBOR_TAG_STRINGREF_NAMESPACE: |
|
|
1167 | { |
|
|
1168 | // do not use SAVETMPS/FREETMPS, as these will |
|
|
1169 | // erase mortalised caches, e.g. "shareable" |
|
|
1170 | ENTER; |
|
|
1171 | |
|
|
1172 | SAVESPTR (dec->stringref); |
|
|
1173 | dec->stringref = (AV *)sv_2mortal ((SV *)newAV ()); |
|
|
1174 | |
|
|
1175 | sv = decode_sv (dec); |
|
|
1176 | |
|
|
1177 | LEAVE; |
|
|
1178 | } |
|
|
1179 | break; |
|
|
1180 | |
|
|
1181 | case CBOR_TAG_STRINGREF: |
|
|
1182 | { |
|
|
1183 | if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT)) |
|
|
1184 | ERR ("corrupted CBOR data (stringref index not an unsigned integer)"); |
|
|
1185 | |
|
|
1186 | UV idx = decode_uint (dec); |
|
|
1187 | |
|
|
1188 | if (!dec->stringref || idx >= (UV)(1 + AvFILLp (dec->stringref))) |
|
|
1189 | ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)"); |
|
|
1190 | |
|
|
1191 | sv = newSVsv (AvARRAY (dec->stringref)[idx]); |
|
|
1192 | } |
|
|
1193 | break; |
|
|
1194 | |
|
|
1195 | case CBOR_TAG_VALUE_SHAREABLE: |
|
|
1196 | { |
|
|
1197 | if (ecb_expect_false (!dec->shareable)) |
|
|
1198 | dec->shareable = (AV *)sv_2mortal ((SV *)newAV ()); |
|
|
1199 | |
|
|
1200 | if (ecb_expect_false (dec->cbor.flags & (F_ALLOW_CYCLES | F_ALLOW_WEAK_CYCLES))) |
|
|
1201 | { |
|
|
1202 | // if cycles are allowed, then we store an AV as value |
|
|
1203 | // while it is being decoded, and gather unresolved |
|
|
1204 | // references in it, to be re4solved after decoding. |
|
|
1205 | int idx, i; |
|
|
1206 | AV *av = newAV (); |
|
|
1207 | av_push (dec->shareable, (SV *)av); |
|
|
1208 | idx = AvFILLp (dec->shareable); |
|
|
1209 | |
|
|
1210 | sv = decode_sv (dec); |
|
|
1211 | |
|
|
1212 | // the AV now contains \undef for all unresolved references, |
|
|
1213 | // so we fix them up here. |
|
|
1214 | for (i = 0; i <= AvFILLp (av); ++i) |
|
|
1215 | SvRV_set (AvARRAY (av)[i], SvREFCNT_inc_NN (SvRV (sv))); |
|
|
1216 | |
|
|
1217 | // weaken all recursive references |
|
|
1218 | if (dec->cbor.flags & F_ALLOW_WEAK_CYCLES) |
|
|
1219 | for (i = 0; i <= AvFILLp (av); ++i) |
|
|
1220 | sv_rvweaken (AvARRAY (av)[i]); |
|
|
1221 | |
|
|
1222 | // now replace the AV by a reference to the completed value |
|
|
1223 | SvREFCNT_dec_NN ((SV *)av); |
|
|
1224 | AvARRAY (dec->shareable)[idx] = SvREFCNT_inc_NN (sv); |
|
|
1225 | } |
|
|
1226 | else |
|
|
1227 | { |
|
|
1228 | av_push (dec->shareable, &PL_sv_undef); |
|
|
1229 | int idx = AvFILLp (dec->shareable); |
|
|
1230 | sv = decode_sv (dec); |
|
|
1231 | AvARRAY (dec->shareable)[idx] = SvREFCNT_inc_NN (sv); |
|
|
1232 | } |
|
|
1233 | } |
|
|
1234 | break; |
|
|
1235 | |
|
|
1236 | case CBOR_TAG_VALUE_SHAREDREF: |
|
|
1237 | { |
|
|
1238 | if ((*dec->cur >> MAJOR_SHIFT) != (MAJOR_POS_INT >> MAJOR_SHIFT)) |
|
|
1239 | ERR ("corrupted CBOR data (sharedref index not an unsigned integer)"); |
|
|
1240 | |
|
|
1241 | UV idx = decode_uint (dec); |
|
|
1242 | |
|
|
1243 | if (!dec->shareable || idx >= (UV)(1 + AvFILLp (dec->shareable))) |
|
|
1244 | ERR ("corrupted CBOR data (sharedref index out of bounds)"); |
|
|
1245 | |
|
|
1246 | sv = AvARRAY (dec->shareable)[idx]; |
|
|
1247 | |
|
|
1248 | // reference to cycle, we create a new \undef and use that, and also |
|
|
1249 | // registerr it in the AV for later fixing |
|
|
1250 | if (ecb_expect_false (SvTYPE (sv) == SVt_PVAV)) |
|
|
1251 | { |
|
|
1252 | AV *av = (AV *)sv; |
|
|
1253 | sv = newRV_noinc (&PL_sv_undef); |
|
|
1254 | av_push (av, SvREFCNT_inc_NN (sv)); |
|
|
1255 | } |
|
|
1256 | else if (ecb_expect_false (sv == &PL_sv_undef)) // not yet decoded, but cycles not allowed |
|
|
1257 | ERR ("cyclic CBOR data structure found, but allow_cycles is not enabled"); |
|
|
1258 | else // we decoded the object earlier, no cycle |
|
|
1259 | sv = newSVsv (sv); |
|
|
1260 | } |
|
|
1261 | break; |
|
|
1262 | |
|
|
1263 | case CBOR_TAG_PERL_OBJECT: |
|
|
1264 | { |
|
|
1265 | if (dec->cbor.flags & F_FORBID_OBJECTS) |
|
|
1266 | goto filter; |
|
|
1267 | |
|
|
1268 | sv = decode_sv (dec); |
|
|
1269 | |
|
|
1270 | if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV) |
|
|
1271 | ERR ("corrupted CBOR data (non-array perl object)"); |
|
|
1272 | |
|
|
1273 | AV *av = (AV *)SvRV (sv); |
|
|
1274 | int len = av_len (av) + 1; |
|
|
1275 | HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0); |
|
|
1276 | |
|
|
1277 | if (!stash) |
|
|
1278 | ERR ("cannot decode perl-object (package does not exist)"); |
|
|
1279 | |
|
|
1280 | GV *method = gv_fetchmethod_autoload (stash, "THAW", 0); |
|
|
1281 | |
|
|
1282 | if (!method) |
|
|
1283 | ERR ("cannot decode perl-object (package does not have a THAW method)"); |
|
|
1284 | |
|
|
1285 | dSP; |
|
|
1286 | |
|
|
1287 | ENTER; SAVETMPS; |
|
|
1288 | PUSHMARK (SP); |
|
|
1289 | EXTEND (SP, len + 1); |
|
|
1290 | // we re-bless the reference to get overload and other niceties right |
|
|
1291 | PUSHs (*av_fetch (av, 0, 1)); |
|
|
1292 | PUSHs (sv_cbor); |
|
|
1293 | |
|
|
1294 | int i; |
|
|
1295 | |
|
|
1296 | for (i = 1; i < len; ++i) |
|
|
1297 | PUSHs (*av_fetch (av, i, 1)); |
|
|
1298 | |
|
|
1299 | PUTBACK; |
|
|
1300 | call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL); |
|
|
1301 | SPAGAIN; |
|
|
1302 | |
|
|
1303 | if (SvTRUE (ERRSV)) |
|
|
1304 | { |
|
|
1305 | FREETMPS; LEAVE; |
|
|
1306 | ERR_ERRSV; |
|
|
1307 | } |
|
|
1308 | |
|
|
1309 | SvREFCNT_dec_NN (sv); |
|
|
1310 | sv = SvREFCNT_inc (POPs); |
|
|
1311 | |
|
|
1312 | PUTBACK; |
|
|
1313 | |
|
|
1314 | FREETMPS; LEAVE; |
|
|
1315 | } |
|
|
1316 | break; |
|
|
1317 | |
|
|
1318 | default: |
|
|
1319 | filter: |
|
|
1320 | { |
|
|
1321 | SV *tag_sv = newSVuv (tag); |
|
|
1322 | |
|
|
1323 | sv = decode_sv (dec); |
|
|
1324 | |
|
|
1325 | dSP; |
|
|
1326 | ENTER; SAVETMPS; |
|
|
1327 | PUSHMARK (SP); |
|
|
1328 | EXTEND (SP, 2); |
|
|
1329 | PUSHs (tag_sv); |
|
|
1330 | PUSHs (sv); |
|
|
1331 | |
|
|
1332 | PUTBACK; |
|
|
1333 | int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL); |
|
|
1334 | SPAGAIN; |
|
|
1335 | |
|
|
1336 | if (SvTRUE (ERRSV)) |
|
|
1337 | { |
|
|
1338 | SvREFCNT_dec_NN (tag_sv); |
|
|
1339 | FREETMPS; LEAVE; |
|
|
1340 | ERR_ERRSV; |
|
|
1341 | } |
|
|
1342 | |
|
|
1343 | if (count) |
|
|
1344 | { |
|
|
1345 | SvREFCNT_dec_NN (tag_sv); |
|
|
1346 | SvREFCNT_dec_NN (sv); |
|
|
1347 | sv = SvREFCNT_inc_NN (TOPs); |
|
|
1348 | SP -= count; |
|
|
1349 | } |
|
|
1350 | else |
|
|
1351 | { |
|
|
1352 | AV *av = newAV (); |
|
|
1353 | av_push (av, tag_sv); |
|
|
1354 | av_push (av, sv); |
|
|
1355 | |
|
|
1356 | HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash |
|
|
1357 | ? cbor_tagged_stash |
|
|
1358 | : gv_stashpv ("CBOR::XS::Tagged" , 1); |
|
|
1359 | sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash); |
|
|
1360 | } |
|
|
1361 | |
|
|
1362 | PUTBACK; |
|
|
1363 | |
|
|
1364 | FREETMPS; LEAVE; |
|
|
1365 | } |
|
|
1366 | break; |
|
|
1367 | } |
|
|
1368 | |
788 | return sv; |
1369 | return sv; |
789 | |
1370 | |
790 | AV *av = newAV (); |
1371 | fail: |
791 | av_push (av, newSVuv (tag)); |
1372 | SvREFCNT_dec (sv); |
792 | av_push (av, sv); |
1373 | return &PL_sv_undef; |
793 | return newRV_noinc ((SV *)av); |
|
|
794 | } |
1374 | } |
795 | |
1375 | |
796 | static SV * |
1376 | static SV * |
797 | decode_sv (dec_t *dec) |
1377 | decode_sv (dec_t *dec) |
798 | { |
1378 | { |
799 | WANT (1); |
1379 | WANT (1); |
800 | |
1380 | |
801 | switch (*dec->cur >> 5) |
1381 | switch (*dec->cur >> MAJOR_SHIFT) |
802 | { |
1382 | { |
803 | case 0: // unsigned int |
1383 | case MAJOR_POS_INT >> MAJOR_SHIFT: return newSVuv (decode_uint (dec)); |
804 | //TODO: 64 bit values on 3 2bit perls |
1384 | case MAJOR_NEG_INT >> MAJOR_SHIFT: return newSViv (-1 - (IV)decode_uint (dec)); |
805 | return newSVuv (decode_uint (dec)); |
1385 | case MAJOR_BYTES >> MAJOR_SHIFT: return decode_str (dec, 0); |
806 | case 1: // negative int |
1386 | case MAJOR_TEXT >> MAJOR_SHIFT: return decode_str (dec, 1); |
807 | return newSViv (-1 - (IV)decode_uint (dec)); |
1387 | case MAJOR_ARRAY >> MAJOR_SHIFT: return decode_av (dec); |
808 | case 2: // octet string |
1388 | case MAJOR_MAP >> MAJOR_SHIFT: return decode_hv (dec); |
809 | return decode_str (dec, 0); |
1389 | case MAJOR_TAG >> MAJOR_SHIFT: return decode_tagged (dec); |
810 | case 3: // utf-8 string |
1390 | |
811 | return decode_str (dec, 1); |
1391 | case MAJOR_MISC >> MAJOR_SHIFT: |
812 | case 4: // array |
|
|
813 | return decode_av (dec); |
|
|
814 | case 5: // map |
|
|
815 | return decode_hv (dec); |
|
|
816 | case 6: // tag |
|
|
817 | return decode_tagged (dec); |
|
|
818 | case 7: // misc |
|
|
819 | switch (*dec->cur++ & 31) |
1392 | switch (*dec->cur++ & MINOR_MASK) |
820 | { |
1393 | { |
821 | case 20: |
1394 | case SIMPLE_FALSE: |
822 | #if CBOR_SLOW |
1395 | #if CBOR_SLOW |
823 | cbor_false = get_bool ("CBOR::XS::false"); |
1396 | types_false = get_bool ("Types::Serialiser::false"); |
824 | #endif |
1397 | #endif |
825 | return newSVsv (cbor_false); |
1398 | return newSVsv (types_false); |
826 | case 21: |
1399 | case SIMPLE_TRUE: |
827 | #if CBOR_SLOW |
1400 | #if CBOR_SLOW |
828 | cbor_true = get_bool ("CBOR::XS::true"); |
1401 | types_true = get_bool ("Types::Serialiser::true"); |
829 | #endif |
1402 | #endif |
830 | return newSVsv (cbor_true); |
1403 | return newSVsv (types_true); |
831 | case 22: |
1404 | case SIMPLE_NULL: |
832 | return newSVsv (&PL_sv_undef); |
1405 | return newSVsv (&PL_sv_undef); |
|
|
1406 | case SIMPLE_UNDEF: |
|
|
1407 | #if CBOR_SLOW |
|
|
1408 | types_error = get_bool ("Types::Serialiser::error"); |
|
|
1409 | #endif |
|
|
1410 | return newSVsv (types_error); |
833 | |
1411 | |
834 | case 25: |
1412 | case MISC_FLOAT16: |
835 | { |
1413 | { |
836 | WANT (2); |
1414 | WANT (2); |
837 | |
1415 | |
838 | uint16_t fp = (dec->cur[0] << 8) | dec->cur[1]; |
1416 | uint16_t fp = (dec->cur[0] << 8) | dec->cur[1]; |
839 | dec->cur += 2; |
1417 | dec->cur += 2; |
840 | |
1418 | |
841 | return newSVnv (ecb_binary16_to_float (fp)); |
1419 | return newSVnv (ecb_binary16_to_float (fp)); |
842 | } |
1420 | } |
843 | |
1421 | |
844 | case 26: |
1422 | case MISC_FLOAT32: |
845 | { |
1423 | { |
846 | uint32_t fp; |
1424 | uint32_t fp; |
847 | WANT (4); |
1425 | WANT (4); |
848 | memcpy (&fp, dec->cur, 4); |
1426 | memcpy (&fp, dec->cur, 4); |
849 | dec->cur += 4; |
1427 | dec->cur += 4; |
… | |
… | |
852 | fp = ecb_bswap32 (fp); |
1430 | fp = ecb_bswap32 (fp); |
853 | |
1431 | |
854 | return newSVnv (ecb_binary32_to_float (fp)); |
1432 | return newSVnv (ecb_binary32_to_float (fp)); |
855 | } |
1433 | } |
856 | |
1434 | |
857 | case 27: |
1435 | case MISC_FLOAT64: |
858 | { |
1436 | { |
859 | uint64_t fp; |
1437 | uint64_t fp; |
860 | WANT (8); |
1438 | WANT (8); |
861 | memcpy (&fp, dec->cur, 8); |
1439 | memcpy (&fp, dec->cur, 8); |
862 | dec->cur += 8; |
1440 | dec->cur += 8; |
… | |
… | |
865 | fp = ecb_bswap64 (fp); |
1443 | fp = ecb_bswap64 (fp); |
866 | |
1444 | |
867 | return newSVnv (ecb_binary64_to_double (fp)); |
1445 | return newSVnv (ecb_binary64_to_double (fp)); |
868 | } |
1446 | } |
869 | |
1447 | |
870 | // 0..19 unassigned |
1448 | // 0..19 unassigned simple |
871 | // 24 reserved + unassigned (reserved values are not encodable) |
1449 | // 24 reserved + unassigned simple (reserved values are not encodable) |
|
|
1450 | // 28-30 unassigned misc |
|
|
1451 | // 31 break code |
872 | default: |
1452 | default: |
873 | ERR ("corrupted CBOR data (reserved/unassigned major 7 value)"); |
1453 | ERR ("corrupted CBOR data (reserved/unassigned/unexpected major 7 value)"); |
874 | } |
1454 | } |
875 | |
1455 | |
876 | break; |
1456 | break; |
877 | } |
1457 | } |
878 | #if 0 |
|
|
879 | switch (*dec->cur) |
|
|
880 | { |
|
|
881 | //case '"': ++dec->cur; return decode_str (dec); |
|
|
882 | case '[': ++dec->cur; return decode_av (dec); |
|
|
883 | case '{': ++dec->cur; return decode_hv (dec); |
|
|
884 | |
|
|
885 | case '-': |
|
|
886 | case '0': case '1': case '2': case '3': case '4': |
|
|
887 | case '5': case '6': case '7': case '8': case '9': |
|
|
888 | //TODO return decode_num (dec); |
|
|
889 | |
|
|
890 | case 't': |
|
|
891 | if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "true", 4)) |
|
|
892 | { |
|
|
893 | dec->cur += 4; |
|
|
894 | #if CBOR_SLOW |
|
|
895 | cbor_true = get_bool ("CBOR::XS::true"); |
|
|
896 | #endif |
|
|
897 | return newSVsv (cbor_true); |
|
|
898 | } |
|
|
899 | else |
|
|
900 | ERR ("'true' expected"); |
|
|
901 | |
|
|
902 | break; |
|
|
903 | |
|
|
904 | case 'f': |
|
|
905 | if (dec->end - dec->cur >= 5 && !memcmp (dec->cur, "false", 5)) |
|
|
906 | { |
|
|
907 | dec->cur += 5; |
|
|
908 | #if CBOR_SLOW |
|
|
909 | cbor_false = get_bool ("CBOR::XS::false"); |
|
|
910 | #endif |
|
|
911 | return newSVsv (cbor_false); |
|
|
912 | } |
|
|
913 | else |
|
|
914 | ERR ("'false' expected"); |
|
|
915 | |
|
|
916 | break; |
|
|
917 | |
|
|
918 | case 'n': |
|
|
919 | if (dec->end - dec->cur >= 4 && !memcmp (dec->cur, "null", 4)) |
|
|
920 | { |
|
|
921 | dec->cur += 4; |
|
|
922 | return newSVsv (&PL_sv_undef); |
|
|
923 | } |
|
|
924 | else |
|
|
925 | ERR ("'null' expected"); |
|
|
926 | |
|
|
927 | break; |
|
|
928 | |
|
|
929 | default: |
|
|
930 | ERR ("malformed CBOR string, neither array, object, number, string or atom"); |
|
|
931 | break; |
|
|
932 | } |
|
|
933 | #endif |
|
|
934 | |
1458 | |
935 | fail: |
1459 | fail: |
936 | return &PL_sv_undef; |
1460 | return &PL_sv_undef; |
937 | } |
1461 | } |
938 | |
1462 | |
939 | static SV * |
1463 | static SV * |
940 | decode_cbor (SV *string, CBOR *cbor, char **offset_return) |
1464 | decode_cbor (SV *string, CBOR *cbor, char **offset_return) |
941 | { |
1465 | { |
942 | dec_t dec; |
1466 | dec_t dec = { 0 }; |
943 | SV *sv; |
1467 | SV *sv; |
|
|
1468 | STRLEN len; |
|
|
1469 | char *data = SvPVbyte (string, len); |
944 | |
1470 | |
945 | /* work around bugs in 5.10 where manipulating magic values |
|
|
946 | * makes perl ignore the magic in subsequent accesses. |
|
|
947 | * also make a copy of non-PV values, to get them into a clean |
|
|
948 | * state (SvPV should do that, but it's buggy, see below). |
|
|
949 | */ |
|
|
950 | /*SvGETMAGIC (string);*/ |
|
|
951 | if (SvMAGICAL (string) || !SvPOK (string)) |
|
|
952 | string = sv_2mortal (newSVsv (string)); |
|
|
953 | |
|
|
954 | SvUPGRADE (string, SVt_PV); |
|
|
955 | |
|
|
956 | /* work around a bug in perl 5.10, which causes SvCUR to fail an |
|
|
957 | * assertion with -DDEBUGGING, although SvCUR is documented to |
|
|
958 | * return the xpv_cur field which certainly exists after upgrading. |
|
|
959 | * according to nicholas clark, calling SvPOK fixes this. |
|
|
960 | * But it doesn't fix it, so try another workaround, call SvPV_nolen |
|
|
961 | * and hope for the best. |
|
|
962 | * Damnit, SvPV_nolen still trips over yet another assertion. This |
|
|
963 | * assertion business is seriously broken, try yet another workaround |
|
|
964 | * for the broken -DDEBUGGING. |
|
|
965 | */ |
|
|
966 | { |
|
|
967 | #ifdef DEBUGGING |
|
|
968 | STRLEN offset = SvOK (string) ? sv_len (string) : 0; |
|
|
969 | #else |
|
|
970 | STRLEN offset = SvCUR (string); |
|
|
971 | #endif |
|
|
972 | |
|
|
973 | if (offset > cbor->max_size && cbor->max_size) |
1471 | if (len > cbor->max_size && cbor->max_size) |
974 | croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu", |
1472 | croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu", |
975 | (unsigned long)SvCUR (string), (unsigned long)cbor->max_size); |
1473 | (unsigned long)len, (unsigned long)cbor->max_size); |
976 | } |
|
|
977 | |
|
|
978 | sv_utf8_downgrade (string, 0); |
|
|
979 | |
1474 | |
980 | dec.cbor = *cbor; |
1475 | dec.cbor = *cbor; |
981 | dec.cur = (U8 *)SvPVX (string); |
1476 | dec.cur = (U8 *)data; |
982 | dec.end = (U8 *)SvEND (string); |
1477 | dec.end = (U8 *)data + len; |
983 | dec.err = 0; |
|
|
984 | dec.depth = 0; |
|
|
985 | |
|
|
986 | if (dec.cbor.cb_object || dec.cbor.cb_sk_object) |
|
|
987 | ;//TODO dec.cbor.flags |= F_HOOK; |
|
|
988 | |
1478 | |
989 | sv = decode_sv (&dec); |
1479 | sv = decode_sv (&dec); |
990 | |
1480 | |
991 | if (offset_return) |
1481 | if (offset_return) |
992 | *offset_return = dec.cur; |
1482 | *offset_return = dec.cur; |
… | |
… | |
995 | if (dec.cur != dec.end && !dec.err) |
1485 | if (dec.cur != dec.end && !dec.err) |
996 | dec.err = "garbage after CBOR object"; |
1486 | dec.err = "garbage after CBOR object"; |
997 | |
1487 | |
998 | if (dec.err) |
1488 | if (dec.err) |
999 | { |
1489 | { |
|
|
1490 | if (dec.shareable) |
|
|
1491 | { |
|
|
1492 | // need to break cyclic links, which would all be in shareable |
|
|
1493 | int i; |
|
|
1494 | SV **svp; |
|
|
1495 | |
|
|
1496 | for (i = av_len (dec.shareable) + 1; i--; ) |
|
|
1497 | if ((svp = av_fetch (dec.shareable, i, 0))) |
|
|
1498 | sv_setsv (*svp, &PL_sv_undef); |
|
|
1499 | } |
|
|
1500 | |
1000 | SvREFCNT_dec (sv); |
1501 | SvREFCNT_dec_NN (sv); |
|
|
1502 | |
|
|
1503 | if (dec.err_sv) |
|
|
1504 | sv_2mortal (dec.err_sv); |
|
|
1505 | |
1001 | croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)SvPVX (string), (int)(uint8_t)*dec.cur); |
1506 | croak ("%s, at offset %ld (octet 0x%02x)", dec.err, (long)(dec.cur - (U8 *)data), (int)(uint8_t)*dec.cur); |
1002 | } |
1507 | } |
1003 | |
1508 | |
1004 | sv = sv_2mortal (sv); |
1509 | sv = sv_2mortal (sv); |
1005 | |
1510 | |
1006 | return sv; |
1511 | return sv; |
1007 | } |
1512 | } |
1008 | |
1513 | |
|
|
1514 | ///////////////////////////////////////////////////////////////////////////// |
|
|
1515 | // incremental parser |
|
|
1516 | |
|
|
1517 | #define INCR_DONE(cbor) (AvFILLp (cbor->incr_count) < 0) |
|
|
1518 | |
|
|
1519 | // returns 0 for notyet, 1 for success or error |
|
|
1520 | static int |
|
|
1521 | incr_parse (CBOR *self, SV *cborstr) |
|
|
1522 | { |
|
|
1523 | STRLEN cur; |
|
|
1524 | SvPV (cborstr, cur); |
|
|
1525 | |
|
|
1526 | while (ecb_expect_true (self->incr_need <= cur)) |
|
|
1527 | { |
|
|
1528 | // table of integer count bytes |
|
|
1529 | static I8 incr_len[MINOR_MASK + 1] = { |
|
|
1530 | 0, 0, 0, 0, 0, 0, 0, 0, |
|
|
1531 | 0, 0, 0, 0, 0, 0, 0, 0, |
|
|
1532 | 0, 0, 0, 0, 0, 0, 0, 0, |
|
|
1533 | 1, 2, 4, 8,-1,-1,-1,-2 |
|
|
1534 | }; |
|
|
1535 | |
|
|
1536 | const U8 *p = SvPVX (cborstr) + self->incr_pos; |
|
|
1537 | U8 m = *p & MINOR_MASK; |
|
|
1538 | IV count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]); |
|
|
1539 | I8 ilen = incr_len[m]; |
|
|
1540 | |
|
|
1541 | self->incr_need = self->incr_pos + 1; |
|
|
1542 | |
|
|
1543 | if (ecb_expect_false (ilen < 0)) |
|
|
1544 | { |
|
|
1545 | if (m != MINOR_INDEF) |
|
|
1546 | return 1; // error |
|
|
1547 | |
|
|
1548 | if (*p == (MAJOR_MISC | MINOR_INDEF)) |
|
|
1549 | { |
|
|
1550 | if (count >= 0) |
|
|
1551 | return 1; // error |
|
|
1552 | |
|
|
1553 | count = 1; |
|
|
1554 | } |
|
|
1555 | else |
|
|
1556 | { |
|
|
1557 | av_push (self->incr_count, newSViv (-1)); //TODO: nest |
|
|
1558 | count = -1; |
|
|
1559 | } |
|
|
1560 | } |
|
|
1561 | else |
|
|
1562 | { |
|
|
1563 | self->incr_need += ilen; |
|
|
1564 | if (ecb_expect_false (self->incr_need > cur)) |
|
|
1565 | return 0; |
|
|
1566 | |
|
|
1567 | int major = *p >> MAJOR_SHIFT; |
|
|
1568 | |
|
|
1569 | switch (major) |
|
|
1570 | { |
|
|
1571 | case MAJOR_TAG >> MAJOR_SHIFT: |
|
|
1572 | ++count; // tags merely prefix another value |
|
|
1573 | break; |
|
|
1574 | |
|
|
1575 | case MAJOR_BYTES >> MAJOR_SHIFT: |
|
|
1576 | case MAJOR_TEXT >> MAJOR_SHIFT: |
|
|
1577 | case MAJOR_ARRAY >> MAJOR_SHIFT: |
|
|
1578 | case MAJOR_MAP >> MAJOR_SHIFT: |
|
|
1579 | { |
|
|
1580 | UV len; |
|
|
1581 | |
|
|
1582 | if (ecb_expect_false (ilen)) |
|
|
1583 | { |
|
|
1584 | len = 0; |
|
|
1585 | |
|
|
1586 | do { |
|
|
1587 | len = (len << 8) | *++p; |
|
|
1588 | } while (--ilen); |
|
|
1589 | } |
|
|
1590 | else |
|
|
1591 | len = m; |
|
|
1592 | |
|
|
1593 | switch (major) |
|
|
1594 | { |
|
|
1595 | case MAJOR_BYTES >> MAJOR_SHIFT: |
|
|
1596 | case MAJOR_TEXT >> MAJOR_SHIFT: |
|
|
1597 | self->incr_need += len; |
|
|
1598 | if (ecb_expect_false (self->incr_need > cur)) |
|
|
1599 | return 0; |
|
|
1600 | |
|
|
1601 | break; |
|
|
1602 | |
|
|
1603 | case MAJOR_MAP >> MAJOR_SHIFT: |
|
|
1604 | len <<= 1; |
|
|
1605 | /* FALLTHROUGH */ |
|
|
1606 | case MAJOR_ARRAY >> MAJOR_SHIFT: |
|
|
1607 | if (len) |
|
|
1608 | { |
|
|
1609 | av_push (self->incr_count, newSViv (len + 1)); //TODO: nest |
|
|
1610 | count = len + 1; |
|
|
1611 | } |
|
|
1612 | break; |
|
|
1613 | } |
|
|
1614 | } |
|
|
1615 | } |
|
|
1616 | } |
|
|
1617 | |
|
|
1618 | self->incr_pos = self->incr_need; |
|
|
1619 | |
|
|
1620 | if (count > 0) |
|
|
1621 | { |
|
|
1622 | while (!--count) |
|
|
1623 | { |
|
|
1624 | if (!AvFILLp (self->incr_count)) |
|
|
1625 | return 1; // done |
|
|
1626 | |
|
|
1627 | SvREFCNT_dec_NN (av_pop (self->incr_count)); |
|
|
1628 | count = SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]); |
|
|
1629 | } |
|
|
1630 | |
|
|
1631 | SvIVX (AvARRAY (self->incr_count)[AvFILLp (self->incr_count)]) = count; |
|
|
1632 | } |
|
|
1633 | } |
|
|
1634 | |
|
|
1635 | return 0; |
|
|
1636 | } |
|
|
1637 | |
|
|
1638 | |
1009 | ///////////////////////////////////////////////////////////////////////////// |
1639 | ///////////////////////////////////////////////////////////////////////////// |
1010 | // XS interface functions |
1640 | // XS interface functions |
1011 | |
1641 | |
1012 | MODULE = CBOR::XS PACKAGE = CBOR::XS |
1642 | MODULE = CBOR::XS PACKAGE = CBOR::XS |
1013 | |
1643 | |
1014 | BOOT: |
1644 | BOOT: |
1015 | { |
1645 | { |
1016 | cbor_stash = gv_stashpv ("CBOR::XS" , 1); |
1646 | cbor_stash = gv_stashpv ("CBOR::XS" , 1); |
1017 | cbor_boolean_stash = gv_stashpv ("CBOR::XS::Boolean", 1); |
1647 | cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1); |
1018 | |
1648 | |
1019 | cbor_true = get_bool ("CBOR::XS::true"); |
1649 | types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1); |
1020 | cbor_false = get_bool ("CBOR::XS::false"); |
1650 | types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1); |
|
|
1651 | |
|
|
1652 | types_true = get_bool ("Types::Serialiser::true" ); |
|
|
1653 | types_false = get_bool ("Types::Serialiser::false"); |
|
|
1654 | types_error = get_bool ("Types::Serialiser::error"); |
|
|
1655 | |
|
|
1656 | default_filter = newSVpv ("CBOR::XS::default_filter", 0); |
|
|
1657 | |
|
|
1658 | sv_cbor = newSVpv ("CBOR", 0); |
|
|
1659 | SvREADONLY_on (sv_cbor); |
|
|
1660 | |
|
|
1661 | assert (("STRLEN must be an unsigned type", 0 <= (STRLEN)-1)); |
1021 | } |
1662 | } |
1022 | |
1663 | |
1023 | PROTOTYPES: DISABLE |
1664 | PROTOTYPES: DISABLE |
1024 | |
1665 | |
1025 | void CLONE (...) |
1666 | void CLONE (...) |
1026 | CODE: |
1667 | CODE: |
1027 | cbor_stash = 0; |
1668 | cbor_stash = 0; |
|
|
1669 | cbor_tagged_stash = 0; |
|
|
1670 | types_error_stash = 0; |
1028 | cbor_boolean_stash = 0; |
1671 | types_boolean_stash = 0; |
1029 | |
1672 | |
1030 | void new (char *klass) |
1673 | void new (char *klass) |
1031 | PPCODE: |
1674 | PPCODE: |
1032 | { |
1675 | { |
1033 | SV *pv = NEWSV (0, sizeof (CBOR)); |
1676 | SV *pv = NEWSV (0, sizeof (CBOR)); |
… | |
… | |
1039 | ))); |
1682 | ))); |
1040 | } |
1683 | } |
1041 | |
1684 | |
1042 | void shrink (CBOR *self, int enable = 1) |
1685 | void shrink (CBOR *self, int enable = 1) |
1043 | ALIAS: |
1686 | ALIAS: |
1044 | shrink = F_SHRINK |
1687 | shrink = F_SHRINK |
1045 | allow_unknown = F_ALLOW_UNKNOWN |
1688 | allow_unknown = F_ALLOW_UNKNOWN |
|
|
1689 | allow_sharing = F_ALLOW_SHARING |
|
|
1690 | allow_cycles = F_ALLOW_CYCLES |
|
|
1691 | allow_weak_cycles = F_ALLOW_WEAK_CYCLES |
|
|
1692 | forbid_objects = F_FORBID_OBJECTS |
|
|
1693 | pack_strings = F_PACK_STRINGS |
|
|
1694 | text_keys = F_TEXT_KEYS |
|
|
1695 | text_strings = F_TEXT_STRINGS |
|
|
1696 | validate_utf8 = F_VALIDATE_UTF8 |
1046 | PPCODE: |
1697 | PPCODE: |
1047 | { |
1698 | { |
1048 | if (enable) |
1699 | if (enable) |
1049 | self->flags |= ix; |
1700 | self->flags |= ix; |
1050 | else |
1701 | else |
… | |
… | |
1053 | XPUSHs (ST (0)); |
1704 | XPUSHs (ST (0)); |
1054 | } |
1705 | } |
1055 | |
1706 | |
1056 | void get_shrink (CBOR *self) |
1707 | void get_shrink (CBOR *self) |
1057 | ALIAS: |
1708 | ALIAS: |
1058 | get_shrink = F_SHRINK |
1709 | get_shrink = F_SHRINK |
1059 | get_allow_unknown = F_ALLOW_UNKNOWN |
1710 | get_allow_unknown = F_ALLOW_UNKNOWN |
|
|
1711 | get_allow_sharing = F_ALLOW_SHARING |
|
|
1712 | get_allow_cycles = F_ALLOW_CYCLES |
|
|
1713 | get_allow_weak_cycles = F_ALLOW_WEAK_CYCLES |
|
|
1714 | get_forbid_objects = F_FORBID_OBJECTS |
|
|
1715 | get_pack_strings = F_PACK_STRINGS |
|
|
1716 | get_text_keys = F_TEXT_KEYS |
|
|
1717 | get_text_strings = F_TEXT_STRINGS |
|
|
1718 | get_validate_utf8 = F_VALIDATE_UTF8 |
1060 | PPCODE: |
1719 | PPCODE: |
1061 | XPUSHs (boolSV (self->flags & ix)); |
1720 | XPUSHs (boolSV (self->flags & ix)); |
1062 | |
1721 | |
1063 | void max_depth (CBOR *self, U32 max_depth = 0x80000000UL) |
1722 | void max_depth (CBOR *self, U32 max_depth = 0x80000000UL) |
1064 | PPCODE: |
1723 | PPCODE: |
… | |
… | |
1080 | CODE: |
1739 | CODE: |
1081 | RETVAL = self->max_size; |
1740 | RETVAL = self->max_size; |
1082 | OUTPUT: |
1741 | OUTPUT: |
1083 | RETVAL |
1742 | RETVAL |
1084 | |
1743 | |
1085 | #if 0 //TODO |
1744 | void filter (CBOR *self, SV *filter = 0) |
1086 | |
|
|
1087 | void filter_cbor_object (CBOR *self, SV *cb = &PL_sv_undef) |
|
|
1088 | PPCODE: |
1745 | PPCODE: |
1089 | { |
|
|
1090 | SvREFCNT_dec (self->cb_object); |
1746 | SvREFCNT_dec (self->filter); |
1091 | self->cb_object = SvOK (cb) ? newSVsv (cb) : 0; |
1747 | self->filter = filter ? newSVsv (filter) : filter; |
1092 | |
|
|
1093 | XPUSHs (ST (0)); |
1748 | XPUSHs (ST (0)); |
1094 | } |
|
|
1095 | |
1749 | |
1096 | void filter_cbor_single_key_object (CBOR *self, SV *key, SV *cb = &PL_sv_undef) |
1750 | SV *get_filter (CBOR *self) |
1097 | PPCODE: |
1751 | CODE: |
1098 | { |
1752 | RETVAL = self->filter ? self->filter : NEWSV (0, 0); |
1099 | if (!self->cb_sk_object) |
1753 | OUTPUT: |
1100 | self->cb_sk_object = newHV (); |
1754 | RETVAL |
1101 | |
|
|
1102 | if (SvOK (cb)) |
|
|
1103 | hv_store_ent (self->cb_sk_object, key, newSVsv (cb), 0); |
|
|
1104 | else |
|
|
1105 | { |
|
|
1106 | hv_delete_ent (self->cb_sk_object, key, G_DISCARD, 0); |
|
|
1107 | |
|
|
1108 | if (!HvKEYS (self->cb_sk_object)) |
|
|
1109 | { |
|
|
1110 | SvREFCNT_dec (self->cb_sk_object); |
|
|
1111 | self->cb_sk_object = 0; |
|
|
1112 | } |
|
|
1113 | } |
|
|
1114 | |
|
|
1115 | XPUSHs (ST (0)); |
|
|
1116 | } |
|
|
1117 | |
|
|
1118 | #endif |
|
|
1119 | |
1755 | |
1120 | void encode (CBOR *self, SV *scalar) |
1756 | void encode (CBOR *self, SV *scalar) |
1121 | PPCODE: |
1757 | PPCODE: |
1122 | PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN; |
1758 | PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN; |
1123 | XPUSHs (scalar); |
1759 | XPUSHs (scalar); |
… | |
… | |
1136 | EXTEND (SP, 2); |
1772 | EXTEND (SP, 2); |
1137 | PUSHs (sv); |
1773 | PUSHs (sv); |
1138 | PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr)))); |
1774 | PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr)))); |
1139 | } |
1775 | } |
1140 | |
1776 | |
|
|
1777 | void incr_parse (CBOR *self, SV *cborstr) |
|
|
1778 | ALIAS: |
|
|
1779 | incr_parse_multiple = 1 |
|
|
1780 | PPCODE: |
|
|
1781 | { |
|
|
1782 | if (SvUTF8 (cborstr)) |
|
|
1783 | sv_utf8_downgrade (cborstr, 0); |
|
|
1784 | |
|
|
1785 | if (!self->incr_count) |
|
|
1786 | { |
|
|
1787 | self->incr_count = newAV (); |
|
|
1788 | self->incr_pos = 0; |
|
|
1789 | self->incr_need = 1; |
|
|
1790 | |
|
|
1791 | av_push (self->incr_count, newSViv (1)); |
|
|
1792 | } |
|
|
1793 | |
|
|
1794 | do |
|
|
1795 | { |
|
|
1796 | if (!incr_parse (self, cborstr)) |
|
|
1797 | { |
|
|
1798 | if (self->incr_need > self->max_size && self->max_size) |
|
|
1799 | croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu", |
|
|
1800 | (unsigned long)self->incr_need, (unsigned long)self->max_size); |
|
|
1801 | |
|
|
1802 | break; |
|
|
1803 | } |
|
|
1804 | |
|
|
1805 | SV *sv; |
|
|
1806 | char *offset; |
|
|
1807 | |
|
|
1808 | PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN; |
|
|
1809 | XPUSHs (sv); |
|
|
1810 | |
|
|
1811 | sv_chop (cborstr, offset); |
|
|
1812 | |
|
|
1813 | av_clear (self->incr_count); |
|
|
1814 | av_push (self->incr_count, newSViv (1)); |
|
|
1815 | |
|
|
1816 | self->incr_pos = 0; |
|
|
1817 | self->incr_need = self->incr_pos + 1; |
|
|
1818 | } |
|
|
1819 | while (ix); |
|
|
1820 | } |
|
|
1821 | |
|
|
1822 | void incr_reset (CBOR *self) |
|
|
1823 | CODE: |
|
|
1824 | { |
|
|
1825 | SvREFCNT_dec (self->incr_count); |
|
|
1826 | self->incr_count = 0; |
|
|
1827 | } |
|
|
1828 | |
1141 | void DESTROY (CBOR *self) |
1829 | void DESTROY (CBOR *self) |
1142 | CODE: |
1830 | PPCODE: |
1143 | SvREFCNT_dec (self->cb_sk_object); |
1831 | cbor_free (self); |
1144 | SvREFCNT_dec (self->cb_object); |
|
|
1145 | |
1832 | |
1146 | PROTOTYPES: ENABLE |
1833 | PROTOTYPES: ENABLE |
1147 | |
1834 | |
1148 | void encode_cbor (SV *scalar) |
1835 | void encode_cbor (SV *scalar) |
|
|
1836 | ALIAS: |
|
|
1837 | encode_cbor = 0 |
|
|
1838 | encode_cbor_sharing = F_ALLOW_SHARING |
1149 | PPCODE: |
1839 | PPCODE: |
1150 | { |
1840 | { |
1151 | CBOR cbor; |
1841 | CBOR cbor; |
1152 | cbor_init (&cbor); |
1842 | cbor_init (&cbor); |
|
|
1843 | cbor.flags |= ix; |
1153 | PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN; |
1844 | PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN; |
1154 | XPUSHs (scalar); |
1845 | XPUSHs (scalar); |
1155 | } |
1846 | } |
1156 | |
1847 | |
1157 | void decode_cbor (SV *cborstr) |
1848 | void decode_cbor (SV *cborstr) |
… | |
… | |
1161 | cbor_init (&cbor); |
1852 | cbor_init (&cbor); |
1162 | PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN; |
1853 | PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN; |
1163 | XPUSHs (cborstr); |
1854 | XPUSHs (cborstr); |
1164 | } |
1855 | } |
1165 | |
1856 | |
|
|
1857 | #ifdef __AFL_COMPILER |
|
|
1858 | |
|
|
1859 | void |
|
|
1860 | afl_init () |
|
|
1861 | CODE: |
|
|
1862 | __AFL_INIT (); |
|
|
1863 | |
|
|
1864 | int |
|
|
1865 | afl_loop (unsigned int count = 10000) |
|
|
1866 | CODE: |
|
|
1867 | RETVAL = __AFL_LOOP (count); |
|
|
1868 | OUTPUT: |
|
|
1869 | RETVAL |
|
|
1870 | |
|
|
1871 | #endif |
|
|
1872 | |