189 lines
6.3 KiB
C
189 lines
6.3 KiB
C
/*
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* Copyright (c) 2003-2017 Lev Walkin <vlm@lionet.info>. All rights reserved.
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* Redistribution and modifications are permitted subject to BSD license.
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*/
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/*
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* Declarations internally useful for the ASN.1 support code.
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*/
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#ifndef ASN_INTERNAL_H
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#define ASN_INTERNAL_H
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#ifndef __EXTENSIONS__
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#define __EXTENSIONS__ /* for Sun */
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#endif
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#include "asn_application.h" /* Application-visible API */
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#include <osmocom/sbcap/sbcap_internal.h>
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#ifndef __NO_ASSERT_H__ /* Include assert.h only for internal use. */
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#include <assert.h> /* for assert() macro */
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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#if !defined(ASN_DISABLE_UPER_SUPPORT)
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#include <uper_decoder.h>
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#include <uper_encoder.h>
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#endif /* !defined(ASN_DISABLE_UPER_SUPPORT) */
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#if !defined(ASN_DISABLE_APER_SUPPORT)
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#include <aper_decoder.h>
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#include <aper_encoder.h>
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#endif /* !defined(ASN_DISABLE_APER_SUPPORT) */
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/* Environment version might be used to avoid running with the old library */
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#define ASN1C_ENVIRONMENT_VERSION 923 /* Compile-time version */
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int get_asn1c_environment_version(void); /* Run-time version */
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#define CALLOC(nmemb, size) calloc(nmemb, size)
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#define MALLOC(size) malloc(size)
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#define REALLOC(oldptr, size) realloc(oldptr, size)
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#define FREEMEM(ptr) free(ptr)
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#define asn_debug_indent 0
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#define ASN_DEBUG_INDENT_ADD(i) do{}while(0)
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#ifdef EMIT_ASN_DEBUG
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#warning "Use ASN_EMIT_DEBUG instead of EMIT_ASN_DEBUG"
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#define ASN_EMIT_DEBUG EMIT_ASN_DEBUG
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#endif
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/*
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* A macro for debugging the ASN.1 internals.
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* You may enable or override it.
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*/
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#ifndef ASN_DEBUG /* If debugging code is not defined elsewhere... */
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#if ASN_EMIT_DEBUG == 1 /* And it was asked to emit this code... */
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#if __STDC_VERSION__ >= 199901L
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#ifdef ASN_THREAD_SAFE
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/* Thread safety requires sacrifice in output indentation:
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* Retain empty definition of ASN_DEBUG_INDENT_ADD. */
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#else /* !ASN_THREAD_SAFE */
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#undef ASN_DEBUG_INDENT_ADD
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#undef asn_debug_indent
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int asn_debug_indent;
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#define ASN_DEBUG_INDENT_ADD(i) do { asn_debug_indent += i; } while(0)
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#endif /* ASN_THREAD_SAFE */
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#define ASN_DEBUG(fmt, args...) do { \
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int adi = asn_debug_indent; \
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while(adi--) fprintf(stderr, " "); \
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fprintf(stderr, fmt, ##args); \
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fprintf(stderr, " (%s:%d)\n", \
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__FILE__, __LINE__); \
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} while(0)
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#else /* !C99 */
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void CC_PRINTFLIKE(1, 2) ASN_DEBUG_f(const char *fmt, ...);
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#define ASN_DEBUG ASN_DEBUG_f
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#endif /* C99 */
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#else /* ASN_EMIT_DEBUG != 1 */
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#if __STDC_VERSION__ >= 199901L
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#define ASN_DEBUG(...) do{}while(0)
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#else /* not C99 */
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static void CC_PRINTFLIKE(1, 2) ASN_DEBUG(const char *fmt, ...) { (void)fmt; }
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#endif /* C99 or better */
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#endif /* ASN_EMIT_DEBUG */
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#endif /* ASN_DEBUG */
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/*
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* Print to a callback.
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* The callback is expected to return negative values on error.
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* 0 and positive values are treated as success.
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* RETURN VALUES:
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* -1: Failed to format or invoke the callback.
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* >0: Size of the data that got delivered to the callback.
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*/
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ssize_t CC_PRINTFLIKE(3, 4)
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asn__format_to_callback(
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int (*callback)(const void *, size_t, void *key), void *key,
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const char *fmt, ...);
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/*
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* Invoke the application-supplied callback and fail, if something is wrong.
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*/
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#define ASN__E_cbc(buf, size) (cb((buf), (size), app_key) < 0)
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#define ASN__E_CALLBACK(size, foo) \
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do { \
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if(foo) goto cb_failed; \
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er.encoded += (size); \
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} while(0)
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#define ASN__CALLBACK(buf, size) ASN__E_CALLBACK(size, ASN__E_cbc(buf, size))
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#define ASN__CALLBACK2(buf1, size1, buf2, size2) \
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ASN__E_CALLBACK((size1) + (size2), \
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ASN__E_cbc(buf1, size1) || ASN__E_cbc(buf2, size2))
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#define ASN__CALLBACK3(buf1, size1, buf2, size2, buf3, size3) \
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ASN__E_CALLBACK((size1) + (size2) + (size3), \
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ASN__E_cbc(buf1, size1) || ASN__E_cbc(buf2, size2) \
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|| ASN__E_cbc(buf3, size3))
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#define ASN__TEXT_INDENT(nl, level) \
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do { \
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int tmp_level = (level); \
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int tmp_nl = ((nl) != 0); \
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int tmp_i; \
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if(tmp_nl) ASN__CALLBACK("\n", 1); \
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if(tmp_level < 0) tmp_level = 0; \
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for(tmp_i = 0; tmp_i < tmp_level; tmp_i++) ASN__CALLBACK(" ", 4); \
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} while(0)
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#define _i_INDENT(nl) do { \
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int tmp_i; \
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if((nl) && cb("\n", 1, app_key) < 0) \
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return -1; \
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for(tmp_i = 0; tmp_i < ilevel; tmp_i++) \
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if(cb(" ", 4, app_key) < 0) \
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return -1; \
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} while(0)
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/*
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* Check stack against overflow, if limit is set.
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*/
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/* Since GCC 13, AddressSanitizer started defaulting to
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* ASAN_OPTIONS="detect_stack_use_after_return=1", which makes this check
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* fail due to apparently jumping stack pointers.
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* Hence, disable this check if building with ASan, as documented in:
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* GCC: https://gcc.gnu.org/onlinedocs/cpp/Common-Predefined-Macros.html
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* Clang: https://clang.llvm.org/docs/AddressSanitizer.html#conditional-compilation-with-has-feature-address-sanitizer
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*/
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#if defined(__SANITIZE_ADDRESS__)
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#define ASN__SANITIZE_ENABLED 1
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#elif defined(__has_feature)
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#if __has_feature(address_sanitizer)
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#define ASN__SANITIZE_ENABLED 1
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#endif
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#endif
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#define ASN__DEFAULT_STACK_MAX (30000)
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#if defined(ASN__SANITIZE_ENABLED) || defined(ASN_DISABLE_STACK_OVERFLOW_CHECK)
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static int CC_NOTUSED
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ASN__STACK_OVERFLOW_CHECK(const asn_codec_ctx_t *ctx) {
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(void)ctx;
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return 0;
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}
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#else
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static int CC_NOTUSED
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ASN__STACK_OVERFLOW_CHECK(const asn_codec_ctx_t *ctx) {
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if(ctx && ctx->max_stack_size) {
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/* ctx MUST be allocated on the stack */
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ptrdiff_t usedstack = ((const char *)ctx - (const char *)&ctx);
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if(usedstack > 0) usedstack = -usedstack; /* grows up! */
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/* double negative required to avoid int wrap-around */
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if(usedstack < -(ptrdiff_t)ctx->max_stack_size) {
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ASN_DEBUG("Stack limit %ld reached",
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(long)ctx->max_stack_size);
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return -1;
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}
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}
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return 0;
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}
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif /* ASN_INTERNAL_H */
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