1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
|
/*
* Copyright (c) 2017 Christian Huitema <huitema@huitema.net>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef PTLS_ASN1_H
#define PTLS_ASN1_H
// #include "picotls/minicrypto.h"
/*
* The ASN.1 functions take a "log context" parameter of type ptls_minicrypto_log_ctx_t.
*
* The log function in that code can be instantiated for example as:
*
* void log_printf(void * ctx, const char * format, ...)
* {
* va_list argptr;
* va_start(argptr, format);
* vfprintf(stderr, format, argptr);
* }
*
* Using definitions from <stdio.h> and <stdarg.h>
*/
typedef struct st_ptls_minicrypto_log_ctx_t {
void *ctx;
void (*fn)(void *ctx, const char *format, ...);
} ptls_minicrypto_log_ctx_t;
size_t ptls_asn1_error_message(char const *error_label, size_t bytes_max, size_t byte_index, int level,
ptls_minicrypto_log_ctx_t *log_ctx);
void ptls_asn1_dump_content(const uint8_t *bytes, size_t bytes_max, size_t byte_index, ptls_minicrypto_log_ctx_t *log_ctx);
size_t ptls_asn1_read_type(const uint8_t *bytes, size_t bytes_max, int *structure_bit, int *type_class, uint32_t *type_number,
int *decode_error, int level, ptls_minicrypto_log_ctx_t *log_ctx);
void ptls_asn1_print_type(int type_class, uint32_t type_number, int level, ptls_minicrypto_log_ctx_t *log_ctx);
size_t ptls_asn1_read_length(const uint8_t *bytes, size_t bytes_max, size_t byte_index, uint32_t *length, int *indefinite_length,
size_t *last_byte, int *decode_error, int level, ptls_minicrypto_log_ctx_t *log_ctx);
size_t ptls_asn1_get_expected_type_and_length(const uint8_t *bytes, size_t bytes_max, size_t byte_index, uint8_t expected_type,
uint32_t *length, int *indefinite_length, size_t *last_byte, int *decode_error,
ptls_minicrypto_log_ctx_t *log_ctx);
size_t ptls_asn1_validation_recursive(const uint8_t *bytes, size_t bytes_max, int *decode_error, int level,
ptls_minicrypto_log_ctx_t *log_ctx);
int ptls_asn1_validation(const uint8_t *bytes, size_t length, ptls_minicrypto_log_ctx_t *log_ctx);
#endif
|
