Lev Walkin | a9cc46e | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 1 | /*- |
Lev Walkin | 3e86a4e | 2007-06-29 11:38:57 +0000 | [diff] [blame] | 2 | * Copyright (c) 2003, 2004, 2005, 2007 Lev Walkin <vlm@lionet.info>. |
Lev Walkin | 03e6d6e | 2005-08-03 07:01:32 +0000 | [diff] [blame] | 3 | * All rights reserved. |
Lev Walkin | a9cc46e | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 4 | * Redistribution and modifications are permitted subject to BSD license. |
| 5 | */ |
| 6 | /* |
| 7 | * Declarations internally useful for the ASN.1 support code. |
| 8 | */ |
Lev Walkin | c6cac8e | 2016-03-14 02:57:07 -0700 | [diff] [blame] | 9 | #ifndef ASN_INTERNAL_H |
| 10 | #define ASN_INTERNAL_H |
Lev Walkin | a9cc46e | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 11 | |
Lev Walkin | 1eded35 | 2006-07-13 11:19:01 +0000 | [diff] [blame] | 12 | #include "asn_application.h" /* Application-visible API */ |
Lev Walkin | a9cc46e | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 13 | |
Lev Walkin | 2ffa1c6 | 2005-04-19 09:19:17 +0000 | [diff] [blame] | 14 | #ifndef __NO_ASSERT_H__ /* Include assert.h only for internal use. */ |
| 15 | #include <assert.h> /* for assert() macro */ |
| 16 | #endif |
| 17 | |
Lev Walkin | 6a0370b | 2005-07-28 08:39:46 +0000 | [diff] [blame] | 18 | #ifdef __cplusplus |
| 19 | extern "C" { |
| 20 | #endif |
| 21 | |
Lev Walkin | da9a3b8 | 2005-08-16 17:00:21 +0000 | [diff] [blame] | 22 | /* Environment version might be used to avoid running with the old library */ |
Lev Walkin | cf6c1e2 | 2010-12-12 02:40:27 -0800 | [diff] [blame] | 23 | #define ASN1C_ENVIRONMENT_VERSION 923 /* Compile-time version */ |
Lev Walkin | 6a0370b | 2005-07-28 08:39:46 +0000 | [diff] [blame] | 24 | int get_asn1c_environment_version(void); /* Run-time version */ |
| 25 | |
Lev Walkin | a9cc46e | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 26 | #define CALLOC(nmemb, size) calloc(nmemb, size) |
| 27 | #define MALLOC(size) malloc(size) |
| 28 | #define REALLOC(oldptr, size) realloc(oldptr, size) |
| 29 | #define FREEMEM(ptr) free(ptr) |
| 30 | |
Lev Walkin | b85507a | 2012-03-02 03:54:57 -0800 | [diff] [blame] | 31 | #define asn_debug_indent 0 |
| 32 | #define ASN_DEBUG_INDENT_ADD(i) do{}while(0) |
| 33 | |
Lev Walkin | a9cc46e | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 34 | /* |
| 35 | * A macro for debugging the ASN.1 internals. |
| 36 | * You may enable or override it. |
| 37 | */ |
| 38 | #ifndef ASN_DEBUG /* If debugging code is not defined elsewhere... */ |
| 39 | #if EMIT_ASN_DEBUG == 1 /* And it was asked to emit this code... */ |
| 40 | #ifdef __GNUC__ |
Lev Walkin | 3e86a4e | 2007-06-29 11:38:57 +0000 | [diff] [blame] | 41 | #ifdef ASN_THREAD_SAFE |
Lev Walkin | b85507a | 2012-03-02 03:54:57 -0800 | [diff] [blame] | 42 | /* Thread safety requires sacrifice in output indentation: |
| 43 | * Retain empty definition of ASN_DEBUG_INDENT_ADD. */ |
Lev Walkin | 27f53bc | 2007-06-29 12:10:50 +0000 | [diff] [blame] | 44 | #else /* !ASN_THREAD_SAFE */ |
Lev Walkin | b85507a | 2012-03-02 03:54:57 -0800 | [diff] [blame] | 45 | #undef ASN_DEBUG_INDENT_ADD |
| 46 | #undef asn_debug_indent |
Lev Walkin | 3e86a4e | 2007-06-29 11:38:57 +0000 | [diff] [blame] | 47 | int asn_debug_indent; |
Lev Walkin | e2c05bf | 2012-02-27 10:24:35 -0800 | [diff] [blame] | 48 | #define ASN_DEBUG_INDENT_ADD(i) do { asn_debug_indent += i; } while(0) |
Lev Walkin | 27f53bc | 2007-06-29 12:10:50 +0000 | [diff] [blame] | 49 | #endif /* ASN_THREAD_SAFE */ |
Lev Walkin | 3e86a4e | 2007-06-29 11:38:57 +0000 | [diff] [blame] | 50 | #define ASN_DEBUG(fmt, args...) do { \ |
| 51 | int adi = asn_debug_indent; \ |
| 52 | while(adi--) fprintf(stderr, " "); \ |
| 53 | fprintf(stderr, fmt, ##args); \ |
| 54 | fprintf(stderr, " (%s:%d)\n", \ |
| 55 | __FILE__, __LINE__); \ |
Lev Walkin | a9cc46e | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 56 | } while(0) |
| 57 | #else /* !__GNUC__ */ |
Lev Walkin | 8e8078a | 2004-09-26 13:10:40 +0000 | [diff] [blame] | 58 | void ASN_DEBUG_f(const char *fmt, ...); |
Lev Walkin | a9cc46e | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 59 | #define ASN_DEBUG ASN_DEBUG_f |
| 60 | #endif /* __GNUC__ */ |
| 61 | #else /* EMIT_ASN_DEBUG != 1 */ |
Lev Walkin | 2b290be | 2017-08-03 23:19:23 -0700 | [diff] [blame] | 62 | #if __STDC_VERSION__ >= 199901L |
| 63 | #define ASN_DEBUG(...) do{}while(0) |
| 64 | #else /* not C99 */ |
Lev Walkin | 104af19 | 2016-01-24 22:13:27 -0800 | [diff] [blame] | 65 | static void ASN_DEBUG(const char *fmt, ...) { (void)fmt; } |
Lev Walkin | 2b290be | 2017-08-03 23:19:23 -0700 | [diff] [blame] | 66 | #endif /* C99 or better */ |
Lev Walkin | a9cc46e | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 67 | #endif /* EMIT_ASN_DEBUG */ |
| 68 | #endif /* ASN_DEBUG */ |
| 69 | |
| 70 | /* |
| 71 | * Invoke the application-supplied callback and fail, if something is wrong. |
| 72 | */ |
Lev Walkin | 4fe2882 | 2017-09-18 02:57:34 -0700 | [diff] [blame] | 73 | #define ASN__E_cbc(buf, size) (cb((buf), (size), app_key) < 0) |
| 74 | #define ASN__E_CALLBACK(size, foo) \ |
| 75 | do { \ |
| 76 | if(foo) goto cb_failed; \ |
| 77 | er.encoded += (size); \ |
| 78 | } while(0) |
| 79 | #define ASN__CALLBACK(buf, size) ASN__E_CALLBACK(size, ASN__E_cbc(buf, size)) |
| 80 | #define ASN__CALLBACK2(buf1, size1, buf2, size2) \ |
| 81 | ASN__E_CALLBACK((size1) + (size2), \ |
| 82 | ASN__E_cbc(buf1, size1) || ASN__E_cbc(buf2, size2)) |
| 83 | #define ASN__CALLBACK3(buf1, size1, buf2, size2, buf3, size3) \ |
| 84 | ASN__E_CALLBACK((size1) + (size2) + (size3), \ |
| 85 | ASN__E_cbc(buf1, size1) || ASN__E_cbc(buf2, size2) \ |
| 86 | || ASN__E_cbc(buf3, size3)) |
Lev Walkin | a9cc46e | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 87 | |
Lev Walkin | 4fe2882 | 2017-09-18 02:57:34 -0700 | [diff] [blame] | 88 | #define ASN__TEXT_INDENT(nl, level) \ |
| 89 | do { \ |
| 90 | int tmp_level = (level); \ |
| 91 | int tmp_nl = ((nl) != 0); \ |
| 92 | int tmp_i; \ |
| 93 | if(tmp_nl) ASN__CALLBACK("\n", 1); \ |
| 94 | if(tmp_level < 0) tmp_level = 0; \ |
| 95 | for(tmp_i = 0; tmp_i < tmp_level; tmp_i++) ASN__CALLBACK(" ", 4); \ |
Lev Walkin | 1ec7605 | 2016-03-13 17:13:20 -0700 | [diff] [blame] | 96 | } while(0) |
Lev Walkin | 8e8078a | 2004-09-26 13:10:40 +0000 | [diff] [blame] | 97 | |
Lev Walkin | 1ec7605 | 2016-03-13 17:13:20 -0700 | [diff] [blame] | 98 | #define _i_INDENT(nl) do { \ |
| 99 | int tmp_i; \ |
| 100 | if((nl) && cb("\n", 1, app_key) < 0) \ |
| 101 | return -1; \ |
| 102 | for(tmp_i = 0; tmp_i < ilevel; tmp_i++) \ |
| 103 | if(cb(" ", 4, app_key) < 0) \ |
| 104 | return -1; \ |
| 105 | } while(0) |
Lev Walkin | a9cc46e | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 106 | |
Lev Walkin | 1d9e8dd | 2005-12-07 05:46:03 +0000 | [diff] [blame] | 107 | /* |
| 108 | * Check stack against overflow, if limit is set. |
| 109 | */ |
Lev Walkin | 7c1dc05 | 2016-03-14 03:08:15 -0700 | [diff] [blame] | 110 | #define ASN__DEFAULT_STACK_MAX (30000) |
Lev Walkin | 3f99563 | 2017-09-26 18:27:32 -0700 | [diff] [blame] | 111 | static int CC_NOTUSED |
Lev Walkin | afbf2a9 | 2017-09-12 23:30:27 -0700 | [diff] [blame] | 112 | ASN__STACK_OVERFLOW_CHECK(const asn_codec_ctx_t *ctx) { |
Lev Walkin | 1d9e8dd | 2005-12-07 05:46:03 +0000 | [diff] [blame] | 113 | if(ctx && ctx->max_stack_size) { |
| 114 | |
| 115 | /* ctx MUST be allocated on the stack */ |
Lev Walkin | afbf2a9 | 2017-09-12 23:30:27 -0700 | [diff] [blame] | 116 | ptrdiff_t usedstack = ((const char *)ctx - (const char *)&ctx); |
Lev Walkin | 1d9e8dd | 2005-12-07 05:46:03 +0000 | [diff] [blame] | 117 | if(usedstack > 0) usedstack = -usedstack; /* grows up! */ |
| 118 | |
| 119 | /* double negative required to avoid int wrap-around */ |
| 120 | if(usedstack < -(ptrdiff_t)ctx->max_stack_size) { |
| 121 | ASN_DEBUG("Stack limit %ld reached", |
| 122 | (long)ctx->max_stack_size); |
| 123 | return -1; |
| 124 | } |
| 125 | } |
| 126 | return 0; |
| 127 | } |
| 128 | |
Lev Walkin | 6a0370b | 2005-07-28 08:39:46 +0000 | [diff] [blame] | 129 | #ifdef __cplusplus |
| 130 | } |
| 131 | #endif |
| 132 | |
Lev Walkin | c6cac8e | 2016-03-14 02:57:07 -0700 | [diff] [blame] | 133 | #endif /* ASN_INTERNAL_H */ |