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root |
1.1 |
#include "EXTERN.h" |
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#include "perl.h" |
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#include "XSUB.h" |
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#include <assert.h> |
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#include <string.h> |
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#include <stdlib.h> |
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#include <stdio.h> |
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#include <limits.h> |
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#include <float.h> |
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#include "ecb.h" |
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1.14 |
// compatibility with perl <5.18 |
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#ifndef HvNAMELEN_get |
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# define HvNAMELEN_get(hv) strlen (HvNAME (hv)) |
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#endif |
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#ifndef HvNAMELEN |
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# define HvNAMELEN(hv) HvNAMELEN_get (hv) |
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#endif |
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#ifndef HvNAMEUTF8 |
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# define HvNAMEUTF8(hv) 0 |
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#endif |
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1.28 |
#ifndef SvREFCNT_dec_NN |
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# define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv) |
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#endif |
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1.14 |
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28 |
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1.9 |
// known tags |
29 |
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1.8 |
enum cbor_tag |
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{ |
31 |
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1.29 |
// extensions |
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CBOR_TAG_STRINGREF = 25, // http://cbor.schmorp.de/stringref |
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CBOR_TAG_PERL_OBJECT = 26, // http://cbor.schmorp.de/perl-object |
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CBOR_TAG_GENERIC_OBJECT = 27, // http://cbor.schmorp.de/generic-object |
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CBOR_TAG_VALUE_SHAREABLE = 28, // http://cbor.schmorp.de/value-sharing |
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CBOR_TAG_VALUE_SHAREDREF = 29, // http://cbor.schmorp.de/value-sharing |
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CBOR_TAG_STRINGREF_NAMESPACE = 256, // http://cbor.schmorp.de/stringref |
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1.18 |
CBOR_TAG_INDIRECTION = 22098, // http://cbor.schmorp.de/indirection |
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1.9 |
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// rfc7049 |
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CBOR_TAG_DATETIME = 0, // rfc4287, utf-8 |
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CBOR_TAG_TIMESTAMP = 1, // unix timestamp, any |
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CBOR_TAG_POS_BIGNUM = 2, // byte string |
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CBOR_TAG_NEG_BIGNUM = 3, // byte string |
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CBOR_TAG_DECIMAL = 4, // decimal fraction, array |
46 |
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CBOR_TAG_BIGFLOAT = 5, // array |
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48 |
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CBOR_TAG_CONV_B64U = 21, // base64url, any |
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CBOR_TAG_CONV_B64 = 22, // base64, any |
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CBOR_TAG_CONV_HEX = 23, // base16, any |
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CBOR_TAG_CBOR = 24, // embedded cbor, byte string |
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CBOR_TAG_URI = 32, // URI rfc3986, utf-8 |
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CBOR_TAG_B64U = 33, // base64url rfc4648, utf-8 |
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CBOR_TAG_B64 = 34, // base6 rfc46484, utf-8 |
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CBOR_TAG_REGEX = 35, // regex pcre/ecma262, utf-8 |
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CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8 |
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1.8 |
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59 |
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1.9 |
CBOR_TAG_MAGIC = 55799 // self-describe cbor |
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1.8 |
}; |
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1.24 |
#define F_SHRINK 0x00000001UL |
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#define F_ALLOW_UNKNOWN 0x00000002UL |
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1.32 |
#define F_ALLOW_SHARING 0x00000004UL |
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#define F_PACK_STRINGS 0x00000008UL |
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1.1 |
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#define INIT_SIZE 32 // initial scalar size to be allocated |
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#define SB do { |
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#define SE } while (0) |
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#define IN_RANGE_INC(type,val,beg,end) \ |
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((unsigned type)((unsigned type)(val) - (unsigned type)(beg)) \ |
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<= (unsigned type)((unsigned type)(end) - (unsigned type)(beg))) |
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#define ERR_NESTING_EXCEEDED "cbor text or perl structure exceeds maximum nesting level (max_depth set too low?)" |
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#ifdef USE_ITHREADS |
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# define CBOR_SLOW 1 |
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# define CBOR_STASH (cbor_stash ? cbor_stash : gv_stashpv ("CBOR::XS", 1)) |
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#else |
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# define CBOR_SLOW 0 |
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# define CBOR_STASH cbor_stash |
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#endif |
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1.10 |
static HV *cbor_stash, *types_boolean_stash, *types_error_stash, *cbor_tagged_stash; // CBOR::XS:: |
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1.27 |
static SV *types_true, *types_false, *types_error, *sv_cbor, *default_filter; |
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1.1 |
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typedef struct { |
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U32 flags; |
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U32 max_depth; |
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STRLEN max_size; |
93 |
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1.27 |
SV *filter; |
94 |
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1.1 |
} CBOR; |
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96 |
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1.5 |
ecb_inline void |
97 |
root |
1.1 |
cbor_init (CBOR *cbor) |
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{ |
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Zero (cbor, 1, CBOR); |
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cbor->max_depth = 512; |
101 |
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} |
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103 |
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1.27 |
ecb_inline void |
104 |
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cbor_free (CBOR *cbor) |
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{ |
106 |
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SvREFCNT_dec (cbor->filter); |
107 |
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} |
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109 |
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1.1 |
///////////////////////////////////////////////////////////////////////////// |
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// utility functions |
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112 |
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1.5 |
ecb_inline SV * |
113 |
root |
1.1 |
get_bool (const char *name) |
114 |
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{ |
115 |
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SV *sv = get_sv (name, 1); |
116 |
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117 |
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SvREADONLY_on (sv); |
118 |
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SvREADONLY_on (SvRV (sv)); |
119 |
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120 |
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return sv; |
121 |
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} |
122 |
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123 |
root |
1.5 |
ecb_inline void |
124 |
root |
1.1 |
shrink (SV *sv) |
125 |
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{ |
126 |
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sv_utf8_downgrade (sv, 1); |
127 |
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128 |
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if (SvLEN (sv) > SvCUR (sv) + 1) |
129 |
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{ |
130 |
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#ifdef SvPV_shrink_to_cur |
131 |
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SvPV_shrink_to_cur (sv); |
132 |
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#elif defined (SvPV_renew) |
133 |
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SvPV_renew (sv, SvCUR (sv) + 1); |
134 |
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#endif |
135 |
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} |
136 |
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} |
137 |
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138 |
root |
1.21 |
// minimum length of a string to be registered for stringref |
139 |
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ecb_inline int |
140 |
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minimum_string_length (UV idx) |
141 |
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{ |
142 |
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return idx > 23 |
143 |
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? idx > 0xffU |
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? idx > 0xffffU |
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? idx > 0xffffffffU |
146 |
root |
1.29 |
? 11 |
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: 7 |
148 |
root |
1.21 |
: 5 |
149 |
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: 4 |
150 |
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: 3; |
151 |
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} |
152 |
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153 |
root |
1.1 |
///////////////////////////////////////////////////////////////////////////// |
154 |
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// encoder |
155 |
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156 |
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// structure used for encoding CBOR |
157 |
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typedef struct |
158 |
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{ |
159 |
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char *cur; // SvPVX (sv) + current output position |
160 |
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char *end; // SvEND (sv) |
161 |
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SV *sv; // result scalar |
162 |
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CBOR cbor; |
163 |
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U32 depth; // recursion level |
164 |
root |
1.20 |
HV *stringref[2]; // string => index, or 0 ([0] = bytes, [1] = utf-8) |
165 |
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UV stringref_idx; |
166 |
root |
1.19 |
HV *shareable; // ptr => index, or 0 |
167 |
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UV shareable_idx; |
168 |
root |
1.1 |
} enc_t; |
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170 |
root |
1.5 |
ecb_inline void |
171 |
root |
1.1 |
need (enc_t *enc, STRLEN len) |
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{ |
173 |
root |
1.5 |
if (ecb_expect_false (enc->cur + len >= enc->end)) |
174 |
root |
1.1 |
{ |
175 |
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STRLEN cur = enc->cur - (char *)SvPVX (enc->sv); |
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SvGROW (enc->sv, cur + (len < (cur >> 2) ? cur >> 2 : len) + 1); |
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enc->cur = SvPVX (enc->sv) + cur; |
178 |
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enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1; |
179 |
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} |
180 |
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} |
181 |
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182 |
root |
1.5 |
ecb_inline void |
183 |
root |
1.1 |
encode_ch (enc_t *enc, char ch) |
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{ |
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need (enc, 1); |
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*enc->cur++ = ch; |
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} |
188 |
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189 |
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static void |
190 |
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encode_uint (enc_t *enc, int major, UV len) |
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{ |
192 |
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need (enc, 9); |
193 |
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194 |
root |
1.31 |
if (ecb_expect_true (len < 24)) |
195 |
root |
1.1 |
*enc->cur++ = major | len; |
196 |
root |
1.31 |
else if (ecb_expect_true (len <= 0xff)) |
197 |
root |
1.1 |
{ |
198 |
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*enc->cur++ = major | 24; |
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*enc->cur++ = len; |
200 |
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} |
201 |
root |
1.4 |
else if (len <= 0xffff) |
202 |
root |
1.1 |
{ |
203 |
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*enc->cur++ = major | 25; |
204 |
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*enc->cur++ = len >> 8; |
205 |
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*enc->cur++ = len; |
206 |
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} |
207 |
root |
1.4 |
else if (len <= 0xffffffff) |
208 |
root |
1.1 |
{ |
209 |
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*enc->cur++ = major | 26; |
210 |
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*enc->cur++ = len >> 24; |
211 |
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*enc->cur++ = len >> 16; |
212 |
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*enc->cur++ = len >> 8; |
213 |
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*enc->cur++ = len; |
214 |
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} |
215 |
root |
1.4 |
else |
216 |
root |
1.1 |
{ |
217 |
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*enc->cur++ = major | 27; |
218 |
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*enc->cur++ = len >> 56; |
219 |
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*enc->cur++ = len >> 48; |
220 |
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*enc->cur++ = len >> 40; |
221 |
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*enc->cur++ = len >> 32; |
222 |
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*enc->cur++ = len >> 24; |
223 |
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*enc->cur++ = len >> 16; |
224 |
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*enc->cur++ = len >> 8; |
225 |
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*enc->cur++ = len; |
226 |
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} |
227 |
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} |
228 |
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229 |
root |
1.21 |
ecb_inline void |
230 |
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encode_tag (enc_t *enc, UV tag) |
231 |
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{ |
232 |
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encode_uint (enc, 0xc0, tag); |
233 |
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} |
234 |
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235 |
root |
1.30 |
ecb_inline void |
236 |
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encode_str (enc_t *enc, int utf8, char *str, STRLEN len) |
237 |
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{ |
238 |
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encode_uint (enc, utf8 ? 0x60 : 0x40, len); |
239 |
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need (enc, len); |
240 |
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memcpy (enc->cur, str, len); |
241 |
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enc->cur += len; |
242 |
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} |
243 |
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244 |
root |
1.1 |
static void |
245 |
root |
1.30 |
encode_strref (enc_t *enc, int utf8, char *str, STRLEN len) |
246 |
root |
1.1 |
{ |
247 |
root |
1.32 |
if (ecb_expect_false (enc->cbor.flags & F_PACK_STRINGS)) |
248 |
root |
1.21 |
{ |
249 |
root |
1.22 |
SV **svp = hv_fetch (enc->stringref[!!utf8], str, len, 1); |
250 |
root |
1.21 |
|
251 |
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if (SvOK (*svp)) |
252 |
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{ |
253 |
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// already registered, use stringref |
254 |
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encode_tag (enc, CBOR_TAG_STRINGREF); |
255 |
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encode_uint (enc, 0x00, SvUV (*svp)); |
256 |
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return; |
257 |
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} |
258 |
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else if (len >= minimum_string_length (enc->stringref_idx)) |
259 |
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{ |
260 |
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// register only |
261 |
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sv_setuv (*svp, enc->stringref_idx); |
262 |
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++enc->stringref_idx; |
263 |
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} |
264 |
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} |
265 |
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266 |
root |
1.30 |
encode_str (enc, utf8, str, len); |
267 |
root |
1.1 |
} |
268 |
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269 |
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static void encode_sv (enc_t *enc, SV *sv); |
270 |
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271 |
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static void |
272 |
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encode_av (enc_t *enc, AV *av) |
273 |
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{ |
274 |
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int i, len = av_len (av); |
275 |
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276 |
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if (enc->depth >= enc->cbor.max_depth) |
277 |
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croak (ERR_NESTING_EXCEEDED); |
278 |
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279 |
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++enc->depth; |
280 |
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281 |
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encode_uint (enc, 0x80, len + 1); |
282 |
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283 |
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for (i = 0; i <= len; ++i) |
284 |
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{ |
285 |
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SV **svp = av_fetch (av, i, 0); |
286 |
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encode_sv (enc, svp ? *svp : &PL_sv_undef); |
287 |
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} |
288 |
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289 |
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--enc->depth; |
290 |
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} |
291 |
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292 |
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static void |
293 |
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encode_hv (enc_t *enc, HV *hv) |
294 |
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{ |
295 |
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HE *he; |
296 |
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297 |
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if (enc->depth >= enc->cbor.max_depth) |
298 |
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croak (ERR_NESTING_EXCEEDED); |
299 |
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300 |
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++enc->depth; |
301 |
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302 |
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int pairs = hv_iterinit (hv); |
303 |
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int mg = SvMAGICAL (hv); |
304 |
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305 |
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if (mg) |
306 |
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encode_ch (enc, 0xa0 | 31); |
307 |
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else |
308 |
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encode_uint (enc, 0xa0, pairs); |
309 |
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310 |
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while ((he = hv_iternext (hv))) |
311 |
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{ |
312 |
root |
1.21 |
if (HeKLEN (he) == HEf_SVKEY) |
313 |
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encode_sv (enc, HeSVKEY (he)); |
314 |
root |
1.1 |
else |
315 |
root |
1.30 |
encode_strref (enc, HeKUTF8 (he), HeKEY (he), HeKLEN (he)); |
316 |
root |
1.1 |
|
317 |
root |
1.5 |
encode_sv (enc, ecb_expect_false (mg) ? hv_iterval (hv, he) : HeVAL (he)); |
318 |
root |
1.1 |
} |
319 |
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320 |
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if (mg) |
321 |
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encode_ch (enc, 0xe0 | 31); |
322 |
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323 |
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--enc->depth; |
324 |
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} |
325 |
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326 |
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// encode objects, arrays and special \0=false and \1=true values. |
327 |
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static void |
328 |
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encode_rv (enc_t *enc, SV *sv) |
329 |
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{ |
330 |
root |
1.19 |
SvGETMAGIC (sv); |
331 |
root |
1.1 |
|
332 |
root |
1.19 |
svtype svt = SvTYPE (sv); |
333 |
root |
1.18 |
|
334 |
root |
1.5 |
if (ecb_expect_false (SvOBJECT (sv))) |
335 |
root |
1.1 |
{ |
336 |
root |
1.10 |
HV *boolean_stash = !CBOR_SLOW || types_boolean_stash |
337 |
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? types_boolean_stash |
338 |
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: gv_stashpv ("Types::Serialiser::Boolean", 1); |
339 |
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HV *error_stash = !CBOR_SLOW || types_error_stash |
340 |
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? types_error_stash |
341 |
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: gv_stashpv ("Types::Serialiser::Error", 1); |
342 |
root |
1.6 |
HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash |
343 |
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? cbor_tagged_stash |
344 |
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: gv_stashpv ("CBOR::XS::Tagged" , 1); |
345 |
root |
1.1 |
|
346 |
root |
1.11 |
HV *stash = SvSTASH (sv); |
347 |
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348 |
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if (stash == boolean_stash) |
349 |
root |
1.34 |
{ |
350 |
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encode_ch (enc, SvIV (sv) ? 0xe0 | 21 : 0xe0 | 20); |
351 |
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return; |
352 |
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} |
353 |
root |
1.11 |
else if (stash == error_stash) |
354 |
root |
1.34 |
{ |
355 |
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encode_ch (enc, 0xe0 | 23); |
356 |
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return; |
357 |
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} |
358 |
root |
1.11 |
else if (stash == tagged_stash) |
359 |
root |
1.6 |
{ |
360 |
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if (svt != SVt_PVAV) |
361 |
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croak ("encountered CBOR::XS::Tagged object that isn't an array"); |
362 |
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363 |
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encode_uint (enc, 0xc0, SvUV (*av_fetch ((AV *)sv, 0, 1))); |
364 |
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encode_sv (enc, *av_fetch ((AV *)sv, 1, 1)); |
365 |
root |
1.34 |
|
366 |
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return; |
367 |
root |
1.6 |
} |
368 |
root |
1.34 |
} |
369 |
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|
370 |
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if (ecb_expect_false (SvREFCNT (sv) > 1) |
371 |
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&& ecb_expect_false (enc->cbor.flags & F_ALLOW_SHARING)) |
372 |
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{ |
373 |
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if (!enc->shareable) |
374 |
|
|
enc->shareable = (HV *)sv_2mortal ((SV *)newHV ()); |
375 |
|
|
|
376 |
|
|
SV **svp = hv_fetch (enc->shareable, (char *)&sv, sizeof (sv), 1); |
377 |
|
|
|
378 |
|
|
if (SvOK (*svp)) |
379 |
|
|
{ |
380 |
|
|
encode_tag (enc, CBOR_TAG_VALUE_SHAREDREF); |
381 |
|
|
encode_uint (enc, 0x00, SvUV (*svp)); |
382 |
|
|
return; |
383 |
|
|
} |
384 |
|
|
else |
385 |
|
|
{ |
386 |
|
|
sv_setuv (*svp, enc->shareable_idx); |
387 |
|
|
++enc->shareable_idx; |
388 |
|
|
encode_tag (enc, CBOR_TAG_VALUE_SHAREABLE); |
389 |
|
|
} |
390 |
|
|
} |
391 |
|
|
|
392 |
|
|
if (ecb_expect_false (SvOBJECT (sv))) |
393 |
|
|
{ |
394 |
|
|
HV *stash = SvSTASH (sv); |
395 |
|
|
GV *method; |
396 |
|
|
|
397 |
|
|
if ((method = gv_fetchmethod_autoload (stash, "TO_CBOR", 0))) |
398 |
root |
1.1 |
{ |
399 |
root |
1.11 |
dSP; |
400 |
|
|
|
401 |
|
|
ENTER; SAVETMPS; PUSHMARK (SP); |
402 |
root |
1.6 |
// we re-bless the reference to get overload and other niceties right |
403 |
root |
1.11 |
XPUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash)); |
404 |
|
|
|
405 |
|
|
PUTBACK; |
406 |
|
|
// G_SCALAR ensures that return value is 1 |
407 |
|
|
call_sv ((SV *)GvCV (method), G_SCALAR); |
408 |
|
|
SPAGAIN; |
409 |
|
|
|
410 |
|
|
// catch this surprisingly common error |
411 |
|
|
if (SvROK (TOPs) && SvRV (TOPs) == sv) |
412 |
|
|
croak ("%s::TO_CBOR method returned same object as was passed instead of a new one", HvNAME (stash)); |
413 |
|
|
|
414 |
|
|
encode_sv (enc, POPs); |
415 |
|
|
|
416 |
|
|
PUTBACK; |
417 |
|
|
|
418 |
|
|
FREETMPS; LEAVE; |
419 |
|
|
} |
420 |
|
|
else if ((method = gv_fetchmethod_autoload (stash, "FREEZE", 0)) != 0) |
421 |
|
|
{ |
422 |
|
|
dSP; |
423 |
root |
1.6 |
|
424 |
root |
1.11 |
ENTER; SAVETMPS; PUSHMARK (SP); |
425 |
|
|
EXTEND (SP, 2); |
426 |
|
|
// we re-bless the reference to get overload and other niceties right |
427 |
|
|
PUSHs (sv_bless (sv_2mortal (newRV_inc (sv)), stash)); |
428 |
|
|
PUSHs (sv_cbor); |
429 |
root |
1.1 |
|
430 |
root |
1.11 |
PUTBACK; |
431 |
|
|
int count = call_sv ((SV *)GvCV (method), G_ARRAY); |
432 |
|
|
SPAGAIN; |
433 |
root |
1.6 |
|
434 |
root |
1.11 |
// catch this surprisingly common error |
435 |
|
|
if (count == 1 && SvROK (TOPs) && SvRV (TOPs) == sv) |
436 |
|
|
croak ("%s::FREEZE(CBOR) method returned same object as was passed instead of a new one", HvNAME (stash)); |
437 |
root |
1.6 |
|
438 |
root |
1.18 |
encode_tag (enc, CBOR_TAG_PERL_OBJECT); |
439 |
root |
1.11 |
encode_uint (enc, 0x80, count + 1); |
440 |
root |
1.30 |
encode_strref (enc, HvNAMEUTF8 (stash), HvNAME (stash), HvNAMELEN (stash)); |
441 |
root |
1.6 |
|
442 |
root |
1.11 |
while (count) |
443 |
|
|
encode_sv (enc, SP[1 - count--]); |
444 |
root |
1.6 |
|
445 |
root |
1.11 |
PUTBACK; |
446 |
root |
1.6 |
|
447 |
root |
1.11 |
FREETMPS; LEAVE; |
448 |
root |
1.1 |
} |
449 |
root |
1.11 |
else |
450 |
|
|
croak ("encountered object '%s', but no TO_CBOR or FREEZE methods available on it", |
451 |
|
|
SvPV_nolen (sv_2mortal (newRV_inc (sv)))); |
452 |
root |
1.1 |
} |
453 |
|
|
else if (svt == SVt_PVHV) |
454 |
|
|
encode_hv (enc, (HV *)sv); |
455 |
|
|
else if (svt == SVt_PVAV) |
456 |
|
|
encode_av (enc, (AV *)sv); |
457 |
root |
1.18 |
else |
458 |
root |
1.1 |
{ |
459 |
root |
1.18 |
encode_tag (enc, CBOR_TAG_INDIRECTION); |
460 |
|
|
encode_sv (enc, sv); |
461 |
root |
1.1 |
} |
462 |
|
|
} |
463 |
|
|
|
464 |
|
|
static void |
465 |
|
|
encode_nv (enc_t *enc, SV *sv) |
466 |
|
|
{ |
467 |
|
|
double nv = SvNVX (sv); |
468 |
|
|
|
469 |
|
|
need (enc, 9); |
470 |
|
|
|
471 |
root |
1.5 |
if (ecb_expect_false (nv == (U32)nv)) |
472 |
root |
1.1 |
encode_uint (enc, 0x00, (U32)nv); |
473 |
|
|
//TODO: maybe I32? |
474 |
root |
1.5 |
else if (ecb_expect_false (nv == (float)nv)) |
475 |
root |
1.1 |
{ |
476 |
|
|
uint32_t fp = ecb_float_to_binary32 (nv); |
477 |
|
|
|
478 |
|
|
*enc->cur++ = 0xe0 | 26; |
479 |
|
|
|
480 |
|
|
if (!ecb_big_endian ()) |
481 |
|
|
fp = ecb_bswap32 (fp); |
482 |
|
|
|
483 |
|
|
memcpy (enc->cur, &fp, 4); |
484 |
|
|
enc->cur += 4; |
485 |
|
|
} |
486 |
|
|
else |
487 |
|
|
{ |
488 |
|
|
uint64_t fp = ecb_double_to_binary64 (nv); |
489 |
|
|
|
490 |
|
|
*enc->cur++ = 0xe0 | 27; |
491 |
|
|
|
492 |
|
|
if (!ecb_big_endian ()) |
493 |
|
|
fp = ecb_bswap64 (fp); |
494 |
|
|
|
495 |
|
|
memcpy (enc->cur, &fp, 8); |
496 |
|
|
enc->cur += 8; |
497 |
|
|
} |
498 |
|
|
} |
499 |
|
|
|
500 |
|
|
static void |
501 |
|
|
encode_sv (enc_t *enc, SV *sv) |
502 |
|
|
{ |
503 |
|
|
SvGETMAGIC (sv); |
504 |
|
|
|
505 |
|
|
if (SvPOKp (sv)) |
506 |
|
|
{ |
507 |
|
|
STRLEN len; |
508 |
|
|
char *str = SvPV (sv, len); |
509 |
root |
1.30 |
encode_strref (enc, SvUTF8 (sv), str, len); |
510 |
root |
1.1 |
} |
511 |
|
|
else if (SvNOKp (sv)) |
512 |
|
|
encode_nv (enc, sv); |
513 |
|
|
else if (SvIOKp (sv)) |
514 |
|
|
{ |
515 |
|
|
if (SvIsUV (sv)) |
516 |
|
|
encode_uint (enc, 0x00, SvUVX (sv)); |
517 |
|
|
else if (SvIVX (sv) >= 0) |
518 |
|
|
encode_uint (enc, 0x00, SvIVX (sv)); |
519 |
|
|
else |
520 |
|
|
encode_uint (enc, 0x20, -(SvIVX (sv) + 1)); |
521 |
|
|
} |
522 |
|
|
else if (SvROK (sv)) |
523 |
|
|
encode_rv (enc, SvRV (sv)); |
524 |
|
|
else if (!SvOK (sv)) |
525 |
|
|
encode_ch (enc, 0xe0 | 22); |
526 |
|
|
else if (enc->cbor.flags & F_ALLOW_UNKNOWN) |
527 |
|
|
encode_ch (enc, 0xe0 | 23); |
528 |
|
|
else |
529 |
|
|
croak ("encountered perl type (%s,0x%x) that CBOR cannot handle, check your input data", |
530 |
|
|
SvPV_nolen (sv), (unsigned int)SvFLAGS (sv)); |
531 |
|
|
} |
532 |
|
|
|
533 |
|
|
static SV * |
534 |
|
|
encode_cbor (SV *scalar, CBOR *cbor) |
535 |
|
|
{ |
536 |
root |
1.18 |
enc_t enc = { }; |
537 |
root |
1.1 |
|
538 |
|
|
enc.cbor = *cbor; |
539 |
|
|
enc.sv = sv_2mortal (NEWSV (0, INIT_SIZE)); |
540 |
|
|
enc.cur = SvPVX (enc.sv); |
541 |
|
|
enc.end = SvEND (enc.sv); |
542 |
|
|
|
543 |
|
|
SvPOK_only (enc.sv); |
544 |
root |
1.20 |
|
545 |
root |
1.32 |
if (cbor->flags & F_PACK_STRINGS) |
546 |
root |
1.20 |
{ |
547 |
|
|
encode_tag (&enc, CBOR_TAG_STRINGREF_NAMESPACE); |
548 |
|
|
enc.stringref[0]= (HV *)sv_2mortal ((SV *)newHV ()); |
549 |
|
|
enc.stringref[1]= (HV *)sv_2mortal ((SV *)newHV ()); |
550 |
|
|
} |
551 |
|
|
|
552 |
root |
1.1 |
encode_sv (&enc, scalar); |
553 |
|
|
|
554 |
|
|
SvCUR_set (enc.sv, enc.cur - SvPVX (enc.sv)); |
555 |
|
|
*SvEND (enc.sv) = 0; // many xs functions expect a trailing 0 for text strings |
556 |
|
|
|
557 |
|
|
if (enc.cbor.flags & F_SHRINK) |
558 |
|
|
shrink (enc.sv); |
559 |
|
|
|
560 |
|
|
return enc.sv; |
561 |
|
|
} |
562 |
|
|
|
563 |
|
|
///////////////////////////////////////////////////////////////////////////// |
564 |
|
|
// decoder |
565 |
|
|
|
566 |
|
|
// structure used for decoding CBOR |
567 |
|
|
typedef struct |
568 |
|
|
{ |
569 |
|
|
U8 *cur; // current parser pointer |
570 |
|
|
U8 *end; // end of input string |
571 |
|
|
const char *err; // parse error, if != 0 |
572 |
|
|
CBOR cbor; |
573 |
|
|
U32 depth; // recursion depth |
574 |
|
|
U32 maxdepth; // recursion depth limit |
575 |
root |
1.19 |
AV *shareable; |
576 |
root |
1.20 |
AV *stringref; |
577 |
root |
1.27 |
SV *decode_tagged; |
578 |
root |
1.1 |
} dec_t; |
579 |
|
|
|
580 |
|
|
#define ERR(reason) SB if (!dec->err) dec->err = reason; goto fail; SE |
581 |
|
|
|
582 |
root |
1.5 |
#define WANT(len) if (ecb_expect_false (dec->cur + len > dec->end)) ERR ("unexpected end of CBOR data") |
583 |
root |
1.1 |
|
584 |
|
|
#define DEC_INC_DEPTH if (++dec->depth > dec->cbor.max_depth) ERR (ERR_NESTING_EXCEEDED) |
585 |
|
|
#define DEC_DEC_DEPTH --dec->depth |
586 |
|
|
|
587 |
|
|
static UV |
588 |
|
|
decode_uint (dec_t *dec) |
589 |
|
|
{ |
590 |
|
|
switch (*dec->cur & 31) |
591 |
|
|
{ |
592 |
|
|
case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7: |
593 |
|
|
case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15: |
594 |
|
|
case 16: case 17: case 18: case 19: case 20: case 21: case 22: case 23: |
595 |
|
|
return *dec->cur++ & 31; |
596 |
|
|
|
597 |
|
|
case 24: |
598 |
|
|
WANT (2); |
599 |
|
|
dec->cur += 2; |
600 |
|
|
return dec->cur[-1]; |
601 |
|
|
|
602 |
|
|
case 25: |
603 |
|
|
WANT (3); |
604 |
|
|
dec->cur += 3; |
605 |
|
|
return (((UV)dec->cur[-2]) << 8) |
606 |
|
|
| ((UV)dec->cur[-1]); |
607 |
|
|
|
608 |
|
|
case 26: |
609 |
|
|
WANT (5); |
610 |
|
|
dec->cur += 5; |
611 |
|
|
return (((UV)dec->cur[-4]) << 24) |
612 |
|
|
| (((UV)dec->cur[-3]) << 16) |
613 |
|
|
| (((UV)dec->cur[-2]) << 8) |
614 |
|
|
| ((UV)dec->cur[-1]); |
615 |
|
|
|
616 |
|
|
case 27: |
617 |
|
|
WANT (9); |
618 |
|
|
dec->cur += 9; |
619 |
root |
1.34 |
|
620 |
|
|
return |
621 |
|
|
#if UVSIZE < 8 |
622 |
|
|
0 |
623 |
|
|
#else |
624 |
|
|
(((UV)dec->cur[-8]) << 56) |
625 |
root |
1.1 |
| (((UV)dec->cur[-7]) << 48) |
626 |
|
|
| (((UV)dec->cur[-6]) << 40) |
627 |
|
|
| (((UV)dec->cur[-5]) << 32) |
628 |
root |
1.34 |
#endif |
629 |
root |
1.1 |
| (((UV)dec->cur[-4]) << 24) |
630 |
|
|
| (((UV)dec->cur[-3]) << 16) |
631 |
|
|
| (((UV)dec->cur[-2]) << 8) |
632 |
|
|
| ((UV)dec->cur[-1]); |
633 |
|
|
|
634 |
|
|
default: |
635 |
|
|
ERR ("corrupted CBOR data (unsupported integer minor encoding)"); |
636 |
|
|
} |
637 |
|
|
|
638 |
|
|
fail: |
639 |
|
|
return 0; |
640 |
|
|
} |
641 |
|
|
|
642 |
|
|
static SV *decode_sv (dec_t *dec); |
643 |
|
|
|
644 |
|
|
static SV * |
645 |
|
|
decode_av (dec_t *dec) |
646 |
|
|
{ |
647 |
|
|
AV *av = newAV (); |
648 |
|
|
|
649 |
|
|
DEC_INC_DEPTH; |
650 |
|
|
|
651 |
|
|
if ((*dec->cur & 31) == 31) |
652 |
|
|
{ |
653 |
|
|
++dec->cur; |
654 |
|
|
|
655 |
|
|
for (;;) |
656 |
|
|
{ |
657 |
|
|
WANT (1); |
658 |
|
|
|
659 |
root |
1.2 |
if (*dec->cur == (0xe0 | 31)) |
660 |
root |
1.1 |
{ |
661 |
|
|
++dec->cur; |
662 |
|
|
break; |
663 |
|
|
} |
664 |
|
|
|
665 |
|
|
av_push (av, decode_sv (dec)); |
666 |
|
|
} |
667 |
|
|
} |
668 |
|
|
else |
669 |
|
|
{ |
670 |
|
|
int i, len = decode_uint (dec); |
671 |
|
|
|
672 |
|
|
av_fill (av, len - 1); |
673 |
|
|
|
674 |
|
|
for (i = 0; i < len; ++i) |
675 |
|
|
AvARRAY (av)[i] = decode_sv (dec); |
676 |
|
|
} |
677 |
|
|
|
678 |
|
|
DEC_DEC_DEPTH; |
679 |
|
|
return newRV_noinc ((SV *)av); |
680 |
|
|
|
681 |
|
|
fail: |
682 |
|
|
SvREFCNT_dec (av); |
683 |
|
|
DEC_DEC_DEPTH; |
684 |
|
|
return &PL_sv_undef; |
685 |
|
|
} |
686 |
|
|
|
687 |
root |
1.16 |
static void |
688 |
|
|
decode_he (dec_t *dec, HV *hv) |
689 |
|
|
{ |
690 |
|
|
// for speed reasons, we specialcase single-string |
691 |
root |
1.21 |
// byte or utf-8 strings as keys, but only when !stringref |
692 |
|
|
|
693 |
root |
1.23 |
if (ecb_expect_true (!dec->stringref)) |
694 |
root |
1.21 |
if (*dec->cur >= 0x40 && *dec->cur <= 0x40 + 27) |
695 |
|
|
{ |
696 |
|
|
I32 len = decode_uint (dec); |
697 |
|
|
char *key = (char *)dec->cur; |
698 |
root |
1.16 |
|
699 |
root |
1.21 |
dec->cur += len; |
700 |
|
|
|
701 |
|
|
if (ecb_expect_false (dec->stringref)) |
702 |
|
|
av_push (dec->stringref, newSVpvn (key, len)); |
703 |
|
|
|
704 |
|
|
hv_store (hv, key, len, decode_sv (dec), 0); |
705 |
root |
1.16 |
|
706 |
root |
1.21 |
return; |
707 |
|
|
} |
708 |
|
|
else if (*dec->cur >= 0x60 && *dec->cur <= 0x60 + 27) |
709 |
|
|
{ |
710 |
|
|
I32 len = decode_uint (dec); |
711 |
|
|
char *key = (char *)dec->cur; |
712 |
root |
1.16 |
|
713 |
root |
1.21 |
dec->cur += len; |
714 |
root |
1.20 |
|
715 |
root |
1.21 |
if (ecb_expect_false (dec->stringref)) |
716 |
|
|
av_push (dec->stringref, newSVpvn_utf8 (key, len, 1)); |
717 |
root |
1.16 |
|
718 |
root |
1.21 |
hv_store (hv, key, -len, decode_sv (dec), 0); |
719 |
root |
1.16 |
|
720 |
root |
1.21 |
return; |
721 |
|
|
} |
722 |
root |
1.20 |
|
723 |
root |
1.21 |
SV *k = decode_sv (dec); |
724 |
|
|
SV *v = decode_sv (dec); |
725 |
root |
1.16 |
|
726 |
root |
1.21 |
hv_store_ent (hv, k, v, 0); |
727 |
|
|
SvREFCNT_dec (k); |
728 |
root |
1.16 |
} |
729 |
|
|
|
730 |
root |
1.1 |
static SV * |
731 |
|
|
decode_hv (dec_t *dec) |
732 |
|
|
{ |
733 |
|
|
HV *hv = newHV (); |
734 |
|
|
|
735 |
|
|
DEC_INC_DEPTH; |
736 |
|
|
|
737 |
|
|
if ((*dec->cur & 31) == 31) |
738 |
|
|
{ |
739 |
|
|
++dec->cur; |
740 |
|
|
|
741 |
|
|
for (;;) |
742 |
|
|
{ |
743 |
|
|
WANT (1); |
744 |
|
|
|
745 |
root |
1.2 |
if (*dec->cur == (0xe0 | 31)) |
746 |
root |
1.1 |
{ |
747 |
|
|
++dec->cur; |
748 |
|
|
break; |
749 |
|
|
} |
750 |
|
|
|
751 |
root |
1.16 |
decode_he (dec, hv); |
752 |
root |
1.1 |
} |
753 |
|
|
} |
754 |
|
|
else |
755 |
|
|
{ |
756 |
root |
1.16 |
int pairs = decode_uint (dec); |
757 |
root |
1.1 |
|
758 |
root |
1.16 |
while (pairs--) |
759 |
|
|
decode_he (dec, hv); |
760 |
root |
1.1 |
} |
761 |
|
|
|
762 |
|
|
DEC_DEC_DEPTH; |
763 |
|
|
return newRV_noinc ((SV *)hv); |
764 |
|
|
|
765 |
|
|
fail: |
766 |
|
|
SvREFCNT_dec (hv); |
767 |
|
|
DEC_DEC_DEPTH; |
768 |
|
|
return &PL_sv_undef; |
769 |
|
|
} |
770 |
|
|
|
771 |
|
|
static SV * |
772 |
|
|
decode_str (dec_t *dec, int utf8) |
773 |
|
|
{ |
774 |
root |
1.6 |
SV *sv = 0; |
775 |
root |
1.1 |
|
776 |
|
|
if ((*dec->cur & 31) == 31) |
777 |
|
|
{ |
778 |
root |
1.33 |
// indefinite length strings |
779 |
root |
1.1 |
++dec->cur; |
780 |
|
|
|
781 |
root |
1.33 |
unsigned char major = *dec->cur & 0xe0; |
782 |
|
|
|
783 |
root |
1.1 |
sv = newSVpvn ("", 0); |
784 |
|
|
|
785 |
|
|
for (;;) |
786 |
|
|
{ |
787 |
|
|
WANT (1); |
788 |
|
|
|
789 |
root |
1.33 |
if ((*dec->cur ^ major) >= 31) |
790 |
|
|
if (*dec->cur == (0xe0 | 31)) |
791 |
|
|
{ |
792 |
|
|
++dec->cur; |
793 |
|
|
break; |
794 |
|
|
} |
795 |
|
|
else |
796 |
|
|
ERR ("corrupted CBOR data (invalid chunks in indefinite length string)"); |
797 |
|
|
|
798 |
|
|
STRLEN len = decode_uint (dec); |
799 |
root |
1.1 |
|
800 |
root |
1.33 |
WANT (len); |
801 |
|
|
sv_catpvn (sv, dec->cur, len); |
802 |
|
|
dec->cur += len; |
803 |
root |
1.1 |
} |
804 |
|
|
} |
805 |
|
|
else |
806 |
|
|
{ |
807 |
|
|
STRLEN len = decode_uint (dec); |
808 |
|
|
|
809 |
|
|
WANT (len); |
810 |
|
|
sv = newSVpvn (dec->cur, len); |
811 |
|
|
dec->cur += len; |
812 |
root |
1.25 |
|
813 |
|
|
if (ecb_expect_false (dec->stringref) |
814 |
|
|
&& SvCUR (sv) >= minimum_string_length (AvFILLp (dec->stringref) + 1)) |
815 |
|
|
av_push (dec->stringref, SvREFCNT_inc_NN (sv)); |
816 |
root |
1.1 |
} |
817 |
|
|
|
818 |
|
|
if (utf8) |
819 |
|
|
SvUTF8_on (sv); |
820 |
|
|
|
821 |
|
|
return sv; |
822 |
|
|
|
823 |
|
|
fail: |
824 |
root |
1.6 |
SvREFCNT_dec (sv); |
825 |
root |
1.1 |
return &PL_sv_undef; |
826 |
|
|
} |
827 |
|
|
|
828 |
|
|
static SV * |
829 |
root |
1.3 |
decode_tagged (dec_t *dec) |
830 |
|
|
{ |
831 |
root |
1.19 |
SV *sv = 0; |
832 |
root |
1.3 |
UV tag = decode_uint (dec); |
833 |
root |
1.19 |
|
834 |
|
|
WANT (1); |
835 |
root |
1.3 |
|
836 |
root |
1.18 |
switch (tag) |
837 |
|
|
{ |
838 |
|
|
case CBOR_TAG_MAGIC: |
839 |
root |
1.20 |
sv = decode_sv (dec); |
840 |
|
|
break; |
841 |
root |
1.18 |
|
842 |
|
|
case CBOR_TAG_INDIRECTION: |
843 |
root |
1.20 |
sv = newRV_noinc (decode_sv (dec)); |
844 |
|
|
break; |
845 |
|
|
|
846 |
|
|
case CBOR_TAG_STRINGREF_NAMESPACE: |
847 |
|
|
{ |
848 |
|
|
ENTER; SAVETMPS; |
849 |
|
|
|
850 |
|
|
SAVESPTR (dec->stringref); |
851 |
|
|
dec->stringref = (AV *)sv_2mortal ((SV *)newAV ()); |
852 |
|
|
|
853 |
|
|
sv = decode_sv (dec); |
854 |
|
|
|
855 |
|
|
FREETMPS; LEAVE; |
856 |
|
|
} |
857 |
|
|
break; |
858 |
|
|
|
859 |
|
|
case CBOR_TAG_STRINGREF: |
860 |
|
|
{ |
861 |
|
|
if ((*dec->cur >> 5) != 0) |
862 |
|
|
ERR ("corrupted CBOR data (stringref index not an unsigned integer)"); |
863 |
|
|
|
864 |
|
|
UV idx = decode_uint (dec); |
865 |
|
|
|
866 |
|
|
if (!dec->stringref || (int)idx > AvFILLp (dec->stringref)) |
867 |
|
|
ERR ("corrupted CBOR data (stringref index out of bounds or outside namespace)"); |
868 |
|
|
|
869 |
|
|
sv = newSVsv (AvARRAY (dec->stringref)[idx]); |
870 |
|
|
} |
871 |
|
|
break; |
872 |
root |
1.11 |
|
873 |
root |
1.19 |
case CBOR_TAG_VALUE_SHAREABLE: |
874 |
|
|
{ |
875 |
|
|
if (ecb_expect_false (!dec->shareable)) |
876 |
|
|
dec->shareable = (AV *)sv_2mortal ((SV *)newAV ()); |
877 |
|
|
|
878 |
|
|
sv = newSV (0); |
879 |
|
|
av_push (dec->shareable, SvREFCNT_inc_NN (sv)); |
880 |
root |
1.18 |
|
881 |
root |
1.19 |
SV *osv = decode_sv (dec); |
882 |
|
|
sv_setsv (sv, osv); |
883 |
|
|
SvREFCNT_dec_NN (osv); |
884 |
|
|
} |
885 |
root |
1.20 |
break; |
886 |
root |
1.18 |
|
887 |
|
|
case CBOR_TAG_VALUE_SHAREDREF: |
888 |
root |
1.17 |
{ |
889 |
root |
1.19 |
if ((*dec->cur >> 5) != 0) |
890 |
|
|
ERR ("corrupted CBOR data (sharedref index not an unsigned integer)"); |
891 |
root |
1.18 |
|
892 |
root |
1.19 |
UV idx = decode_uint (dec); |
893 |
|
|
|
894 |
root |
1.20 |
if (!dec->shareable || (int)idx > AvFILLp (dec->shareable)) |
895 |
root |
1.18 |
ERR ("corrupted CBOR data (sharedref index out of bounds)"); |
896 |
|
|
|
897 |
root |
1.20 |
sv = SvREFCNT_inc_NN (AvARRAY (dec->shareable)[idx]); |
898 |
root |
1.17 |
} |
899 |
root |
1.20 |
break; |
900 |
root |
1.17 |
|
901 |
root |
1.18 |
case CBOR_TAG_PERL_OBJECT: |
902 |
|
|
{ |
903 |
root |
1.19 |
sv = decode_sv (dec); |
904 |
|
|
|
905 |
root |
1.18 |
if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV) |
906 |
|
|
ERR ("corrupted CBOR data (non-array perl object)"); |
907 |
|
|
|
908 |
|
|
AV *av = (AV *)SvRV (sv); |
909 |
|
|
int len = av_len (av) + 1; |
910 |
|
|
HV *stash = gv_stashsv (*av_fetch (av, 0, 1), 0); |
911 |
|
|
|
912 |
|
|
if (!stash) |
913 |
|
|
ERR ("cannot decode perl-object (package does not exist)"); |
914 |
|
|
|
915 |
|
|
GV *method = gv_fetchmethod_autoload (stash, "THAW", 0); |
916 |
|
|
|
917 |
|
|
if (!method) |
918 |
|
|
ERR ("cannot decode perl-object (package does not have a THAW method)"); |
919 |
|
|
|
920 |
|
|
dSP; |
921 |
|
|
|
922 |
|
|
ENTER; SAVETMPS; PUSHMARK (SP); |
923 |
|
|
EXTEND (SP, len + 1); |
924 |
|
|
// we re-bless the reference to get overload and other niceties right |
925 |
|
|
PUSHs (*av_fetch (av, 0, 1)); |
926 |
|
|
PUSHs (sv_cbor); |
927 |
|
|
|
928 |
|
|
int i; |
929 |
|
|
|
930 |
|
|
for (i = 1; i < len; ++i) |
931 |
|
|
PUSHs (*av_fetch (av, i, 1)); |
932 |
|
|
|
933 |
|
|
PUTBACK; |
934 |
|
|
call_sv ((SV *)GvCV (method), G_SCALAR | G_EVAL); |
935 |
|
|
SPAGAIN; |
936 |
|
|
|
937 |
|
|
if (SvTRUE (ERRSV)) |
938 |
|
|
{ |
939 |
|
|
FREETMPS; LEAVE; |
940 |
|
|
ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV)))); |
941 |
|
|
} |
942 |
|
|
|
943 |
|
|
SvREFCNT_dec (sv); |
944 |
|
|
sv = SvREFCNT_inc (POPs); |
945 |
root |
1.11 |
|
946 |
root |
1.18 |
PUTBACK; |
947 |
root |
1.11 |
|
948 |
root |
1.18 |
FREETMPS; LEAVE; |
949 |
|
|
} |
950 |
root |
1.20 |
break; |
951 |
root |
1.9 |
|
952 |
root |
1.18 |
default: |
953 |
|
|
{ |
954 |
root |
1.19 |
sv = decode_sv (dec); |
955 |
|
|
|
956 |
root |
1.27 |
dSP; |
957 |
|
|
ENTER; SAVETMPS; PUSHMARK (SP); |
958 |
|
|
EXTEND (SP, 2); |
959 |
|
|
PUSHs (newSVuv (tag)); |
960 |
|
|
PUSHs (sv); |
961 |
|
|
|
962 |
|
|
PUTBACK; |
963 |
|
|
int count = call_sv (dec->cbor.filter ? dec->cbor.filter : default_filter, G_ARRAY | G_EVAL); |
964 |
|
|
SPAGAIN; |
965 |
|
|
|
966 |
|
|
if (SvTRUE (ERRSV)) |
967 |
|
|
{ |
968 |
|
|
FREETMPS; LEAVE; |
969 |
|
|
ERR (SvPVutf8_nolen (sv_2mortal (SvREFCNT_inc (ERRSV)))); |
970 |
|
|
} |
971 |
|
|
|
972 |
|
|
if (count) |
973 |
|
|
{ |
974 |
|
|
SvREFCNT_dec (sv); |
975 |
|
|
sv = SvREFCNT_inc (POPs); |
976 |
|
|
} |
977 |
|
|
else |
978 |
|
|
{ |
979 |
|
|
AV *av = newAV (); |
980 |
|
|
av_push (av, newSVuv (tag)); |
981 |
|
|
av_push (av, sv); |
982 |
|
|
|
983 |
|
|
HV *tagged_stash = !CBOR_SLOW || cbor_tagged_stash |
984 |
|
|
? cbor_tagged_stash |
985 |
|
|
: gv_stashpv ("CBOR::XS::Tagged" , 1); |
986 |
|
|
sv = sv_bless (newRV_noinc ((SV *)av), tagged_stash); |
987 |
|
|
} |
988 |
root |
1.7 |
|
989 |
root |
1.27 |
PUTBACK; |
990 |
|
|
|
991 |
|
|
FREETMPS; LEAVE; |
992 |
root |
1.18 |
} |
993 |
root |
1.20 |
break; |
994 |
root |
1.11 |
} |
995 |
root |
1.9 |
|
996 |
root |
1.20 |
return sv; |
997 |
|
|
|
998 |
root |
1.9 |
fail: |
999 |
|
|
SvREFCNT_dec (sv); |
1000 |
|
|
return &PL_sv_undef; |
1001 |
root |
1.3 |
} |
1002 |
|
|
|
1003 |
|
|
static SV * |
1004 |
root |
1.1 |
decode_sv (dec_t *dec) |
1005 |
|
|
{ |
1006 |
|
|
WANT (1); |
1007 |
|
|
|
1008 |
|
|
switch (*dec->cur >> 5) |
1009 |
|
|
{ |
1010 |
|
|
case 0: // unsigned int |
1011 |
|
|
return newSVuv (decode_uint (dec)); |
1012 |
|
|
case 1: // negative int |
1013 |
|
|
return newSViv (-1 - (IV)decode_uint (dec)); |
1014 |
|
|
case 2: // octet string |
1015 |
|
|
return decode_str (dec, 0); |
1016 |
|
|
case 3: // utf-8 string |
1017 |
|
|
return decode_str (dec, 1); |
1018 |
|
|
case 4: // array |
1019 |
|
|
return decode_av (dec); |
1020 |
|
|
case 5: // map |
1021 |
|
|
return decode_hv (dec); |
1022 |
|
|
case 6: // tag |
1023 |
root |
1.3 |
return decode_tagged (dec); |
1024 |
root |
1.1 |
case 7: // misc |
1025 |
|
|
switch (*dec->cur++ & 31) |
1026 |
|
|
{ |
1027 |
|
|
case 20: |
1028 |
|
|
#if CBOR_SLOW |
1029 |
root |
1.10 |
types_false = get_bool ("Types::Serialiser::false"); |
1030 |
root |
1.1 |
#endif |
1031 |
root |
1.10 |
return newSVsv (types_false); |
1032 |
root |
1.1 |
case 21: |
1033 |
|
|
#if CBOR_SLOW |
1034 |
root |
1.10 |
types_true = get_bool ("Types::Serialiser::true"); |
1035 |
root |
1.1 |
#endif |
1036 |
root |
1.10 |
return newSVsv (types_true); |
1037 |
root |
1.1 |
case 22: |
1038 |
|
|
return newSVsv (&PL_sv_undef); |
1039 |
root |
1.10 |
case 23: |
1040 |
|
|
#if CBOR_SLOW |
1041 |
|
|
types_error = get_bool ("Types::Serialiser::error"); |
1042 |
|
|
#endif |
1043 |
|
|
return newSVsv (types_error); |
1044 |
root |
1.1 |
|
1045 |
|
|
case 25: |
1046 |
root |
1.2 |
{ |
1047 |
|
|
WANT (2); |
1048 |
|
|
|
1049 |
|
|
uint16_t fp = (dec->cur[0] << 8) | dec->cur[1]; |
1050 |
|
|
dec->cur += 2; |
1051 |
|
|
|
1052 |
|
|
return newSVnv (ecb_binary16_to_float (fp)); |
1053 |
|
|
} |
1054 |
root |
1.1 |
|
1055 |
|
|
case 26: |
1056 |
|
|
{ |
1057 |
|
|
uint32_t fp; |
1058 |
|
|
WANT (4); |
1059 |
|
|
memcpy (&fp, dec->cur, 4); |
1060 |
|
|
dec->cur += 4; |
1061 |
|
|
|
1062 |
|
|
if (!ecb_big_endian ()) |
1063 |
|
|
fp = ecb_bswap32 (fp); |
1064 |
|
|
|
1065 |
|
|
return newSVnv (ecb_binary32_to_float (fp)); |
1066 |
|
|
} |
1067 |
|
|
|
1068 |
|
|
case 27: |
1069 |
|
|
{ |
1070 |
|
|
uint64_t fp; |
1071 |
|
|
WANT (8); |
1072 |
|
|
memcpy (&fp, dec->cur, 8); |
1073 |
|
|
dec->cur += 8; |
1074 |
|
|
|
1075 |
|
|
if (!ecb_big_endian ()) |
1076 |
|
|
fp = ecb_bswap64 (fp); |
1077 |
|
|
|
1078 |
|
|
return newSVnv (ecb_binary64_to_double (fp)); |
1079 |
|
|
} |
1080 |
|
|
|
1081 |
|
|
// 0..19 unassigned |
1082 |
|
|
// 24 reserved + unassigned (reserved values are not encodable) |
1083 |
|
|
default: |
1084 |
|
|
ERR ("corrupted CBOR data (reserved/unassigned major 7 value)"); |
1085 |
|
|
} |
1086 |
|
|
|
1087 |
|
|
break; |
1088 |
|
|
} |
1089 |
|
|
|
1090 |
|
|
fail: |
1091 |
|
|
return &PL_sv_undef; |
1092 |
|
|
} |
1093 |
|
|
|
1094 |
|
|
static SV * |
1095 |
|
|
decode_cbor (SV *string, CBOR *cbor, char **offset_return) |
1096 |
|
|
{ |
1097 |
root |
1.18 |
dec_t dec = { }; |
1098 |
root |
1.1 |
SV *sv; |
1099 |
root |
1.16 |
STRLEN len; |
1100 |
|
|
char *data = SvPVbyte (string, len); |
1101 |
root |
1.1 |
|
1102 |
root |
1.16 |
if (len > cbor->max_size && cbor->max_size) |
1103 |
|
|
croak ("attempted decode of CBOR text of %lu bytes size, but max_size is set to %lu", |
1104 |
|
|
(unsigned long)len, (unsigned long)cbor->max_size); |
1105 |
root |
1.1 |
|
1106 |
|
|
dec.cbor = *cbor; |
1107 |
root |
1.16 |
dec.cur = (U8 *)data; |
1108 |
|
|
dec.end = (U8 *)data + len; |
1109 |
root |
1.1 |
|
1110 |
|
|
sv = decode_sv (&dec); |
1111 |
|
|
|
1112 |
|
|
if (offset_return) |
1113 |
|
|
*offset_return = dec.cur; |
1114 |
|
|
|
1115 |
|
|
if (!(offset_return || !sv)) |
1116 |
root |
1.2 |
if (dec.cur != dec.end && !dec.err) |
1117 |
|
|
dec.err = "garbage after CBOR object"; |
1118 |
|
|
|
1119 |
|
|
if (dec.err) |
1120 |
root |
1.1 |
{ |
1121 |
root |
1.2 |
SvREFCNT_dec (sv); |
1122 |
root |
1.16 |
croak ("%s, at offset %d (octet 0x%02x)", dec.err, dec.cur - (U8 *)data, (int)(uint8_t)*dec.cur); |
1123 |
root |
1.1 |
} |
1124 |
|
|
|
1125 |
|
|
sv = sv_2mortal (sv); |
1126 |
|
|
|
1127 |
|
|
return sv; |
1128 |
|
|
} |
1129 |
|
|
|
1130 |
|
|
///////////////////////////////////////////////////////////////////////////// |
1131 |
|
|
// XS interface functions |
1132 |
|
|
|
1133 |
|
|
MODULE = CBOR::XS PACKAGE = CBOR::XS |
1134 |
|
|
|
1135 |
|
|
BOOT: |
1136 |
|
|
{ |
1137 |
|
|
cbor_stash = gv_stashpv ("CBOR::XS" , 1); |
1138 |
root |
1.6 |
cbor_tagged_stash = gv_stashpv ("CBOR::XS::Tagged" , 1); |
1139 |
root |
1.1 |
|
1140 |
root |
1.10 |
types_boolean_stash = gv_stashpv ("Types::Serialiser::Boolean", 1); |
1141 |
|
|
types_error_stash = gv_stashpv ("Types::Serialiser::Error" , 1); |
1142 |
|
|
|
1143 |
|
|
types_true = get_bool ("Types::Serialiser::true" ); |
1144 |
|
|
types_false = get_bool ("Types::Serialiser::false"); |
1145 |
|
|
types_error = get_bool ("Types::Serialiser::error"); |
1146 |
root |
1.11 |
|
1147 |
root |
1.27 |
default_filter = newSVpv ("CBOR::XS::default_filter", 0); |
1148 |
|
|
|
1149 |
root |
1.11 |
sv_cbor = newSVpv ("CBOR", 0); |
1150 |
|
|
SvREADONLY_on (sv_cbor); |
1151 |
root |
1.1 |
} |
1152 |
|
|
|
1153 |
|
|
PROTOTYPES: DISABLE |
1154 |
|
|
|
1155 |
|
|
void CLONE (...) |
1156 |
|
|
CODE: |
1157 |
root |
1.10 |
cbor_stash = 0; |
1158 |
|
|
cbor_tagged_stash = 0; |
1159 |
|
|
types_error_stash = 0; |
1160 |
|
|
types_boolean_stash = 0; |
1161 |
root |
1.1 |
|
1162 |
|
|
void new (char *klass) |
1163 |
|
|
PPCODE: |
1164 |
|
|
{ |
1165 |
|
|
SV *pv = NEWSV (0, sizeof (CBOR)); |
1166 |
|
|
SvPOK_only (pv); |
1167 |
|
|
cbor_init ((CBOR *)SvPVX (pv)); |
1168 |
|
|
XPUSHs (sv_2mortal (sv_bless ( |
1169 |
|
|
newRV_noinc (pv), |
1170 |
|
|
strEQ (klass, "CBOR::XS") ? CBOR_STASH : gv_stashpv (klass, 1) |
1171 |
|
|
))); |
1172 |
|
|
} |
1173 |
|
|
|
1174 |
|
|
void shrink (CBOR *self, int enable = 1) |
1175 |
|
|
ALIAS: |
1176 |
|
|
shrink = F_SHRINK |
1177 |
|
|
allow_unknown = F_ALLOW_UNKNOWN |
1178 |
root |
1.18 |
allow_sharing = F_ALLOW_SHARING |
1179 |
root |
1.32 |
pack_strings = F_PACK_STRINGS |
1180 |
root |
1.1 |
PPCODE: |
1181 |
|
|
{ |
1182 |
|
|
if (enable) |
1183 |
|
|
self->flags |= ix; |
1184 |
|
|
else |
1185 |
|
|
self->flags &= ~ix; |
1186 |
|
|
|
1187 |
|
|
XPUSHs (ST (0)); |
1188 |
|
|
} |
1189 |
|
|
|
1190 |
|
|
void get_shrink (CBOR *self) |
1191 |
|
|
ALIAS: |
1192 |
|
|
get_shrink = F_SHRINK |
1193 |
|
|
get_allow_unknown = F_ALLOW_UNKNOWN |
1194 |
root |
1.18 |
get_allow_sharing = F_ALLOW_SHARING |
1195 |
root |
1.32 |
get_pack_strings = F_PACK_STRINGS |
1196 |
root |
1.1 |
PPCODE: |
1197 |
|
|
XPUSHs (boolSV (self->flags & ix)); |
1198 |
|
|
|
1199 |
|
|
void max_depth (CBOR *self, U32 max_depth = 0x80000000UL) |
1200 |
|
|
PPCODE: |
1201 |
|
|
self->max_depth = max_depth; |
1202 |
|
|
XPUSHs (ST (0)); |
1203 |
|
|
|
1204 |
|
|
U32 get_max_depth (CBOR *self) |
1205 |
|
|
CODE: |
1206 |
|
|
RETVAL = self->max_depth; |
1207 |
|
|
OUTPUT: |
1208 |
|
|
RETVAL |
1209 |
|
|
|
1210 |
|
|
void max_size (CBOR *self, U32 max_size = 0) |
1211 |
|
|
PPCODE: |
1212 |
|
|
self->max_size = max_size; |
1213 |
|
|
XPUSHs (ST (0)); |
1214 |
|
|
|
1215 |
|
|
int get_max_size (CBOR *self) |
1216 |
|
|
CODE: |
1217 |
|
|
RETVAL = self->max_size; |
1218 |
|
|
OUTPUT: |
1219 |
|
|
RETVAL |
1220 |
|
|
|
1221 |
root |
1.27 |
void filter (CBOR *self, SV *filter = 0) |
1222 |
|
|
PPCODE: |
1223 |
|
|
SvREFCNT_dec (self->filter); |
1224 |
|
|
self->filter = filter ? newSVsv (filter) : filter; |
1225 |
|
|
XPUSHs (ST (0)); |
1226 |
|
|
|
1227 |
|
|
SV *get_filter (CBOR *self) |
1228 |
|
|
CODE: |
1229 |
|
|
RETVAL = self->filter ? self->filter : NEWSV (0, 0); |
1230 |
|
|
OUTPUT: |
1231 |
|
|
RETVAL |
1232 |
|
|
|
1233 |
root |
1.1 |
void encode (CBOR *self, SV *scalar) |
1234 |
|
|
PPCODE: |
1235 |
|
|
PUTBACK; scalar = encode_cbor (scalar, self); SPAGAIN; |
1236 |
|
|
XPUSHs (scalar); |
1237 |
|
|
|
1238 |
|
|
void decode (CBOR *self, SV *cborstr) |
1239 |
|
|
PPCODE: |
1240 |
|
|
PUTBACK; cborstr = decode_cbor (cborstr, self, 0); SPAGAIN; |
1241 |
|
|
XPUSHs (cborstr); |
1242 |
|
|
|
1243 |
|
|
void decode_prefix (CBOR *self, SV *cborstr) |
1244 |
|
|
PPCODE: |
1245 |
|
|
{ |
1246 |
|
|
SV *sv; |
1247 |
|
|
char *offset; |
1248 |
|
|
PUTBACK; sv = decode_cbor (cborstr, self, &offset); SPAGAIN; |
1249 |
|
|
EXTEND (SP, 2); |
1250 |
|
|
PUSHs (sv); |
1251 |
|
|
PUSHs (sv_2mortal (newSVuv (offset - SvPVX (cborstr)))); |
1252 |
|
|
} |
1253 |
|
|
|
1254 |
root |
1.27 |
void DESTROY (CBOR *self) |
1255 |
|
|
PPCODE: |
1256 |
|
|
cbor_free (self); |
1257 |
|
|
|
1258 |
root |
1.1 |
PROTOTYPES: ENABLE |
1259 |
|
|
|
1260 |
|
|
void encode_cbor (SV *scalar) |
1261 |
|
|
PPCODE: |
1262 |
|
|
{ |
1263 |
|
|
CBOR cbor; |
1264 |
|
|
cbor_init (&cbor); |
1265 |
|
|
PUTBACK; scalar = encode_cbor (scalar, &cbor); SPAGAIN; |
1266 |
|
|
XPUSHs (scalar); |
1267 |
|
|
} |
1268 |
|
|
|
1269 |
|
|
void decode_cbor (SV *cborstr) |
1270 |
|
|
PPCODE: |
1271 |
|
|
{ |
1272 |
|
|
CBOR cbor; |
1273 |
|
|
cbor_init (&cbor); |
1274 |
|
|
PUTBACK; cborstr = decode_cbor (cborstr, &cbor, 0); SPAGAIN; |
1275 |
|
|
XPUSHs (cborstr); |
1276 |
|
|
} |
1277 |
|
|
|