Port to CMake, get rid of os_int.h.

[stg.git] / libs / smux / include / stg / asn_internal.h

diff --git a/libs/smux/include/stg/asn_internal.h b/libs/smux/include/stg/asn_internal.h
new file mode 100644 (file)
index 0000000..67f055a
--- /dev/null
+++ b/libs/smux/include/stg/asn_internal.h
@@ -0,0 +1,111 @@
+/*-
+ * Copyright (c) 2003, 2004, 2005 Lev Walkin <vlm@lionet.info>.
+ * All rights reserved.
+ * Redistribution and modifications are permitted subject to BSD license.
+ */
+/*
+ * Declarations internally useful for the ASN.1 support code.
+ */
+#ifndef        _ASN_INTERNAL_H_
+#define        _ASN_INTERNAL_H_
+
+#include "asn_application.h"   /* Application-visible API */
+
+#ifndef        __NO_ASSERT_H__         /* Include assert.h only for internal use. */
+#include <assert.h>            /* for assert() macro */
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Environment version might be used to avoid running with the old library */
+#define        ASN1C_ENVIRONMENT_VERSION       920     /* Compile-time version */
+int get_asn1c_environment_version(void);       /* Run-time version */
+
+#define        CALLOC(nmemb, size)     calloc(nmemb, size)
+#define        MALLOC(size)            malloc(size)
+#define        REALLOC(oldptr, size)   realloc(oldptr, size)
+#define        FREEMEM(ptr)            free(ptr)
+
+/*
+ * A macro for debugging the ASN.1 internals.
+ * You may enable or override it.
+ */
+#ifndef        ASN_DEBUG       /* If debugging code is not defined elsewhere... */
+#if    EMIT_ASN_DEBUG == 1     /* And it was asked to emit this code... */
+#ifdef __GNUC__
+#define        ASN_DEBUG(fmt, args...) do {            \
+               fprintf(stderr, fmt, ##args);   \
+               fprintf(stderr, " (%s:%d)\n",   \
+                       __FILE__, __LINE__);    \
+       } while(0)
+#else  /* !__GNUC__ */
+void ASN_DEBUG_f(const char *fmt, ...);
+#define        ASN_DEBUG       ASN_DEBUG_f
+#endif /* __GNUC__ */
+#else  /* EMIT_ASN_DEBUG != 1 */
+static inline void ASN_DEBUG(const char *fmt, ...) { (void)fmt; }
+#endif /* EMIT_ASN_DEBUG */
+#endif /* ASN_DEBUG */
+
+/*
+ * Invoke the application-supplied callback and fail, if something is wrong.
+ */
+#define        __ASN_E_cbc(buf, size)  (cb((buf), (size), app_key) < 0)
+#define        _ASN_E_CALLBACK(foo)    do {                                    \
+               if(foo) goto cb_failed;                                 \
+       } while(0)
+#define        _ASN_CALLBACK(buf, size)                                        \
+       _ASN_E_CALLBACK(__ASN_E_cbc(buf, size))
+#define        _ASN_CALLBACK2(buf1, size1, buf2, size2)                        \
+       _ASN_E_CALLBACK(__ASN_E_cbc(buf1, size1) || __ASN_E_cbc(buf2, size2))
+#define        _ASN_CALLBACK3(buf1, size1, buf2, size2, buf3, size3)           \
+       _ASN_E_CALLBACK(__ASN_E_cbc(buf1, size1)                        \
+               || __ASN_E_cbc(buf2, size2)                             \
+               || __ASN_E_cbc(buf3, size3))
+
+#define        _i_ASN_TEXT_INDENT(nl, level) do {                              \
+       int __level = (level);                                          \
+       int __nl = ((nl) != 0);                                         \
+       int __i;                                                        \
+       if(__nl) _ASN_CALLBACK("\n", 1);                                \
+       for(__i = 0; __i < __level; __i++)                              \
+               _ASN_CALLBACK("    ", 4);                               \
+       er.encoded += __nl + 4 * __level;                               \
+} while(0)
+
+#define        _i_INDENT(nl)   do {                                            \
+       int __i;                                                        \
+       if((nl) && cb("\n", 1, app_key) < 0) return -1;                 \
+       for(__i = 0; __i < ilevel; __i++)                               \
+               if(cb("    ", 4, app_key) < 0) return -1;               \
+} while(0)
+
+/*
+ * Check stack against overflow, if limit is set.
+ */
+#define        _ASN_DEFAULT_STACK_MAX  (30000)
+static inline int
+_ASN_STACK_OVERFLOW_CHECK(asn_codec_ctx_t *ctx) {
+       if(ctx && ctx->max_stack_size) {
+
+               /* ctx MUST be allocated on the stack */
+               ptrdiff_t usedstack = ((char *)ctx - (char *)&ctx);
+               if(usedstack > 0) usedstack = -usedstack; /* grows up! */
+
+               /* double negative required to avoid int wrap-around */
+               if(usedstack < -(ptrdiff_t)ctx->max_stack_size) {
+                       ASN_DEBUG("Stack limit %ld reached",
+                               (long)ctx->max_stack_size);
+                       return -1;
+               }
+       }
+       return 0;
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _ASN_INTERNAL_H_ */