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/*
* Copyright 1995-2025 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#ifndef OSSL_INTERNAL_COMMON_H
# define OSSL_INTERNAL_COMMON_H
# pragma once
# include <stdlib.h>
# include <string.h>
# include "openssl/configuration.h"
# include "internal/e_os.h" /* ossl_inline in many files */
# include "internal/nelem.h"
# if defined(__GNUC__) || defined(__clang__)
# define ossl_likely(x) __builtin_expect(!!(x), 1)
# define ossl_unlikely(x) __builtin_expect(!!(x), 0)
# else
# define ossl_likely(x) (x)
# define ossl_unlikely(x) (x)
# endif
# if defined(__GNUC__) || defined(__clang__)
# define ALIGN32 __attribute((aligned(32)))
# define ALIGN64 __attribute((aligned(64)))
# elif defined(_MSC_VER)
# define ALIGN32 __declspec(align(32))
# define ALIGN64 __declspec(align(64))
# else
# define ALIGN32
# define ALIGN64
# endif
# ifdef NDEBUG
# define ossl_assert(x) ossl_likely((x) != 0)
# else
__owur static ossl_inline int ossl_assert_int(int expr, const char *exprstr,
const char *file, int line)
{
if (!expr)
OPENSSL_die(exprstr, file, line);
return expr;
}
# define ossl_assert(x) ossl_assert_int((x) != 0, "Assertion failed: "#x, \
__FILE__, __LINE__)
# endif
/* Check if |pre|, which must be a string literal, is a prefix of |str| */
#define HAS_PREFIX(str, pre) (strncmp(str, pre "", sizeof(pre) - 1) == 0)
/* As before, and if check succeeds, advance |str| past the prefix |pre| */
#define CHECK_AND_SKIP_PREFIX(str, pre) \
(HAS_PREFIX(str, pre) ? ((str) += sizeof(pre) - 1, 1) : 0)
/* Check if the string literal |p| is a case-insensitive prefix of |s| */
#define HAS_CASE_PREFIX(s, p) (OPENSSL_strncasecmp(s, p "", sizeof(p) - 1) == 0)
/* As before, and if check succeeds, advance |str| past the prefix |pre| */
#define CHECK_AND_SKIP_CASE_PREFIX(str, pre) \
(HAS_CASE_PREFIX(str, pre) ? ((str) += sizeof(pre) - 1, 1) : 0)
/* Check if the string literal |suffix| is a case-insensitive suffix of |str| */
#define HAS_CASE_SUFFIX(str, suffix) (strlen(str) < sizeof(suffix) - 1 ? 0 : \
OPENSSL_strcasecmp(str + strlen(str) - sizeof(suffix) + 1, suffix "") == 0)
/*
* Use this inside a union with the field that needs to be aligned to a
* reasonable boundary for the platform. The most pessimistic alignment
* of the listed types will be used by the compiler.
*/
# define OSSL_UNION_ALIGN \
double align; \
ossl_uintmax_t align_int; \
void *align_ptr
# define OPENSSL_CONF "openssl.cnf"
# ifndef OPENSSL_SYS_VMS
# define X509_CERT_AREA OPENSSLDIR
# define X509_CERT_DIR OPENSSLDIR "/certs"
# define X509_CERT_FILE OPENSSLDIR "/cert.pem"
# define X509_PRIVATE_DIR OPENSSLDIR "/private"
# define CTLOG_FILE OPENSSLDIR "/ct_log_list.cnf"
# else
# define X509_CERT_AREA "OSSL$DATAROOT:[000000]"
# define X509_CERT_DIR "OSSL$DATAROOT:[CERTS]"
# define X509_CERT_FILE "OSSL$DATAROOT:[000000]cert.pem"
# define X509_PRIVATE_DIR "OSSL$DATAROOT:[PRIVATE]"
# define CTLOG_FILE "OSSL$DATAROOT:[000000]ct_log_list.cnf"
# endif
# define X509_CERT_DIR_EVP "SSL_CERT_DIR"
# define X509_CERT_FILE_EVP "SSL_CERT_FILE"
# define CTLOG_FILE_EVP "CTLOG_FILE"
/* size of string representations */
# define DECIMAL_SIZE(type) ((sizeof(type)*8+2)/3+1)
# define HEX_SIZE(type) (sizeof(type)*2)
# define c2l(c,l) (l = ((unsigned long)(*((c)++))) , \
l|=(((unsigned long)(*((c)++)))<< 8), \
l|=(((unsigned long)(*((c)++)))<<16), \
l|=(((unsigned long)(*((c)++)))<<24))
/* NOTE - c is not incremented as per c2l */
# define c2ln(c,l1,l2,n) { \
c+=n; \
l1=l2=0; \
switch (n) { \
case 8: l2 =((unsigned long)(*(--(c))))<<24; \
case 7: l2|=((unsigned long)(*(--(c))))<<16; \
case 6: l2|=((unsigned long)(*(--(c))))<< 8; \
case 5: l2|=((unsigned long)(*(--(c)))); \
case 4: l1 =((unsigned long)(*(--(c))))<<24; \
case 3: l1|=((unsigned long)(*(--(c))))<<16; \
case 2: l1|=((unsigned long)(*(--(c))))<< 8; \
case 1: l1|=((unsigned long)(*(--(c)))); \
} \
}
# define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \
*((c)++)=(unsigned char)(((l)>> 8)&0xff), \
*((c)++)=(unsigned char)(((l)>>16)&0xff), \
*((c)++)=(unsigned char)(((l)>>24)&0xff))
# define n2l(c,l) (l =((unsigned long)(*((c)++)))<<24, \
l|=((unsigned long)(*((c)++)))<<16, \
l|=((unsigned long)(*((c)++)))<< 8, \
l|=((unsigned long)(*((c)++))))
# define n2l8(c,l) (l =((uint64_t)(*((c)++)))<<56, \
l|=((uint64_t)(*((c)++)))<<48, \
l|=((uint64_t)(*((c)++)))<<40, \
l|=((uint64_t)(*((c)++)))<<32, \
l|=((uint64_t)(*((c)++)))<<24, \
l|=((uint64_t)(*((c)++)))<<16, \
l|=((uint64_t)(*((c)++)))<< 8, \
l|=((uint64_t)(*((c)++))))
# define l2n(l,c) (*((c)++)=(unsigned char)(((l)>>24)&0xff), \
*((c)++)=(unsigned char)(((l)>>16)&0xff), \
*((c)++)=(unsigned char)(((l)>> 8)&0xff), \
*((c)++)=(unsigned char)(((l) )&0xff))
# define l2n8(l,c) (*((c)++)=(unsigned char)(((l)>>56)&0xff), \
*((c)++)=(unsigned char)(((l)>>48)&0xff), \
*((c)++)=(unsigned char)(((l)>>40)&0xff), \
*((c)++)=(unsigned char)(((l)>>32)&0xff), \
*((c)++)=(unsigned char)(((l)>>24)&0xff), \
*((c)++)=(unsigned char)(((l)>>16)&0xff), \
*((c)++)=(unsigned char)(((l)>> 8)&0xff), \
*((c)++)=(unsigned char)(((l) )&0xff))
/* NOTE - c is not incremented as per l2c */
# define l2cn(l1,l2,c,n) { \
c+=n; \
switch (n) { \
case 8: *(--(c))=(unsigned char)(((l2)>>24)&0xff); \
case 7: *(--(c))=(unsigned char)(((l2)>>16)&0xff); \
case 6: *(--(c))=(unsigned char)(((l2)>> 8)&0xff); \
case 5: *(--(c))=(unsigned char)(((l2) )&0xff); \
case 4: *(--(c))=(unsigned char)(((l1)>>24)&0xff); \
case 3: *(--(c))=(unsigned char)(((l1)>>16)&0xff); \
case 2: *(--(c))=(unsigned char)(((l1)>> 8)&0xff); \
case 1: *(--(c))=(unsigned char)(((l1) )&0xff); \
} \
}
# define n2s(c,s) ((s=(((unsigned int)((c)[0]))<< 8)| \
(((unsigned int)((c)[1])) )),(c)+=2)
# define s2n(s,c) (((c)[0]=(unsigned char)(((s)>> 8)&0xff), \
(c)[1]=(unsigned char)(((s) )&0xff)),(c)+=2)
# define n2l3(c,l) ((l =(((unsigned long)((c)[0]))<<16)| \
(((unsigned long)((c)[1]))<< 8)| \
(((unsigned long)((c)[2])) )),(c)+=3)
# define l2n3(l,c) (((c)[0]=(unsigned char)(((l)>>16)&0xff), \
(c)[1]=(unsigned char)(((l)>> 8)&0xff), \
(c)[2]=(unsigned char)(((l) )&0xff)),(c)+=3)
static ossl_inline int ossl_ends_with_dirsep(const char *path)
{
if (*path != '\0')
path += strlen(path) - 1;
# if defined __VMS
if (*path == ']' || *path == '>' || *path == ':')
return 1;
# elif defined _WIN32
if (*path == '\\')
return 1;
# endif
return *path == '/';
}
static ossl_inline char ossl_determine_dirsep(const char *path)
{
if (ossl_ends_with_dirsep(path))
return '\0';
# if defined(_WIN32)
return '\\';
# elif defined(__VMS)
return ':';
# else
return '/';
# endif
}
static ossl_inline int ossl_is_absolute_path(const char *path)
{
# if defined __VMS
if (strchr(path, ':') != NULL
|| ((path[0] == '[' || path[0] == '<')
&& path[1] != '.' && path[1] != '-'
&& path[1] != ']' && path[1] != '>'))
return 1;
# elif defined _WIN32
if (path[0] == '\\'
|| (path[0] != '\0' && path[1] == ':'))
return 1;
# endif
return path[0] == '/';
}
const char *ossl_get_openssldir(void);
const char *ossl_get_enginesdir(void);
const char *ossl_get_modulesdir(void);
const char *ossl_get_wininstallcontext(void);
#endif
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