| 1 | /*
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| 2 | * Copyright 1995-2024 The OpenSSL Project Authors. All Rights Reserved.
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| 3 | *
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| 4 | * Licensed under the Apache License 2.0 (the "License"). You may not use
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| 5 | * this file except in compliance with the License. You can obtain a copy
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| 6 | * in the file LICENSE in the source distribution or at
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| 7 | * https://www.openssl.org/source/license.html
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| 8 | */
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| 9 |
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| 10 | #ifndef OSSL_INTERNAL_COMMON_H
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| 11 | # define OSSL_INTERNAL_COMMON_H
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| 12 | # pragma once
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| 13 |
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| 14 | # include <stdlib.h>
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| 15 | # include <string.h>
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| 16 | # include "openssl/configuration.h"
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| 17 |
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| 18 | # include "internal/e_os.h" /* ossl_inline in many files */
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| 19 | # include "internal/nelem.h"
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| 20 |
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| 21 | # if defined(__GNUC__) || defined(__clang__)
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| 22 | # define ossl_likely(x) __builtin_expect(!!(x), 1)
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| 23 | # define ossl_unlikely(x) __builtin_expect(!!(x), 0)
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| 24 | # else
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| 25 | # define ossl_likely(x) x
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| 26 | # define ossl_unlikely(x) x
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| 27 | # endif
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| 28 |
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| 29 | # if defined(__GNUC__) || defined(__clang__)
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| 30 | # define ALIGN32 __attribute((aligned(32)))
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| 31 | # define ALIGN64 __attribute((aligned(64)))
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| 32 | # elif defined(_MSC_VER)
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| 33 | # define ALIGN32 __declspec(align(32))
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| 34 | # define ALIGN64 __declspec(align(64))
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| 35 | # else
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| 36 | # define ALIGN32
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| 37 | # define ALIGN64
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| 38 | # endif
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| 39 |
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| 40 | # ifdef NDEBUG
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| 41 | # define ossl_assert(x) ossl_likely((x) != 0)
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| 42 | # else
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| 43 | __owur static ossl_inline int ossl_assert_int(int expr, const char *exprstr,
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| 44 | const char *file, int line)
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| 45 | {
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| 46 | if (!expr)
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| 47 | OPENSSL_die(exprstr, file, line);
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| 48 |
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| 49 | return expr;
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| 50 | }
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| 51 |
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| 52 | # define ossl_assert(x) ossl_assert_int((x) != 0, "Assertion failed: "#x, \
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| 53 | __FILE__, __LINE__)
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| 54 |
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| 55 | # endif
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| 56 |
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| 57 | /* Check if |pre|, which must be a string literal, is a prefix of |str| */
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| 58 | #define HAS_PREFIX(str, pre) (strncmp(str, pre "", sizeof(pre) - 1) == 0)
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| 59 | /* As before, and if check succeeds, advance |str| past the prefix |pre| */
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| 60 | #define CHECK_AND_SKIP_PREFIX(str, pre) \
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| 61 | (HAS_PREFIX(str, pre) ? ((str) += sizeof(pre) - 1, 1) : 0)
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| 62 | /* Check if the string literal |p| is a case-insensitive prefix of |s| */
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| 63 | #define HAS_CASE_PREFIX(s, p) (OPENSSL_strncasecmp(s, p "", sizeof(p) - 1) == 0)
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| 64 | /* As before, and if check succeeds, advance |str| past the prefix |pre| */
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| 65 | #define CHECK_AND_SKIP_CASE_PREFIX(str, pre) \
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| 66 | (HAS_CASE_PREFIX(str, pre) ? ((str) += sizeof(pre) - 1, 1) : 0)
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| 67 | /* Check if the string literal |suffix| is a case-insensitive suffix of |str| */
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| 68 | #define HAS_CASE_SUFFIX(str, suffix) (strlen(str) < sizeof(suffix) - 1 ? 0 : \
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| 69 | OPENSSL_strcasecmp(str + strlen(str) - sizeof(suffix) + 1, suffix "") == 0)
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| 70 |
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| 71 | /*
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| 72 | * Use this inside a union with the field that needs to be aligned to a
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| 73 | * reasonable boundary for the platform. The most pessimistic alignment
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| 74 | * of the listed types will be used by the compiler.
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| 75 | */
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| 76 | # define OSSL_UNION_ALIGN \
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| 77 | double align; \
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| 78 | ossl_uintmax_t align_int; \
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| 79 | void *align_ptr
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| 80 |
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| 81 | # define OPENSSL_CONF "openssl.cnf"
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| 82 |
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| 83 | # ifndef OPENSSL_SYS_VMS
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| 84 | # define X509_CERT_AREA OPENSSLDIR
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| 85 | # define X509_CERT_DIR OPENSSLDIR "/certs"
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| 86 | # define X509_CERT_FILE OPENSSLDIR "/cert.pem"
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| 87 | # define X509_PRIVATE_DIR OPENSSLDIR "/private"
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| 88 | # define CTLOG_FILE OPENSSLDIR "/ct_log_list.cnf"
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| 89 | # else
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| 90 | # define X509_CERT_AREA "OSSL$DATAROOT:[000000]"
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| 91 | # define X509_CERT_DIR "OSSL$DATAROOT:[CERTS]"
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| 92 | # define X509_CERT_FILE "OSSL$DATAROOT:[000000]cert.pem"
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| 93 | # define X509_PRIVATE_DIR "OSSL$DATAROOT:[PRIVATE]"
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| 94 | # define CTLOG_FILE "OSSL$DATAROOT:[000000]ct_log_list.cnf"
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| 95 | # endif
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| 96 |
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| 97 | # define X509_CERT_DIR_EVP "SSL_CERT_DIR"
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| 98 | # define X509_CERT_FILE_EVP "SSL_CERT_FILE"
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| 99 | # define CTLOG_FILE_EVP "CTLOG_FILE"
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| 100 |
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| 101 | /* size of string representations */
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| 102 | # define DECIMAL_SIZE(type) ((sizeof(type)*8+2)/3+1)
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| 103 | # define HEX_SIZE(type) (sizeof(type)*2)
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| 104 |
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| 105 | # define c2l(c,l) (l = ((unsigned long)(*((c)++))) , \
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| 106 | l|=(((unsigned long)(*((c)++)))<< 8), \
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| 107 | l|=(((unsigned long)(*((c)++)))<<16), \
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| 108 | l|=(((unsigned long)(*((c)++)))<<24))
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| 109 |
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| 110 | /* NOTE - c is not incremented as per c2l */
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| 111 | # define c2ln(c,l1,l2,n) { \
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| 112 | c+=n; \
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| 113 | l1=l2=0; \
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| 114 | switch (n) { \
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| 115 | case 8: l2 =((unsigned long)(*(--(c))))<<24; \
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| 116 | case 7: l2|=((unsigned long)(*(--(c))))<<16; \
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| 117 | case 6: l2|=((unsigned long)(*(--(c))))<< 8; \
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| 118 | case 5: l2|=((unsigned long)(*(--(c)))); \
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| 119 | case 4: l1 =((unsigned long)(*(--(c))))<<24; \
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| 120 | case 3: l1|=((unsigned long)(*(--(c))))<<16; \
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| 121 | case 2: l1|=((unsigned long)(*(--(c))))<< 8; \
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| 122 | case 1: l1|=((unsigned long)(*(--(c)))); \
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| 123 | } \
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| 124 | }
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| 125 |
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| 126 | # define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \
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| 127 | *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
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| 128 | *((c)++)=(unsigned char)(((l)>>16)&0xff), \
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| 129 | *((c)++)=(unsigned char)(((l)>>24)&0xff))
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| 130 |
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| 131 | # define n2l(c,l) (l =((unsigned long)(*((c)++)))<<24, \
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| 132 | l|=((unsigned long)(*((c)++)))<<16, \
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| 133 | l|=((unsigned long)(*((c)++)))<< 8, \
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| 134 | l|=((unsigned long)(*((c)++))))
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| 135 |
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| 136 | # define n2l8(c,l) (l =((uint64_t)(*((c)++)))<<56, \
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| 137 | l|=((uint64_t)(*((c)++)))<<48, \
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| 138 | l|=((uint64_t)(*((c)++)))<<40, \
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| 139 | l|=((uint64_t)(*((c)++)))<<32, \
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| 140 | l|=((uint64_t)(*((c)++)))<<24, \
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| 141 | l|=((uint64_t)(*((c)++)))<<16, \
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| 142 | l|=((uint64_t)(*((c)++)))<< 8, \
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| 143 | l|=((uint64_t)(*((c)++))))
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| 144 |
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| 145 | # define l2n(l,c) (*((c)++)=(unsigned char)(((l)>>24)&0xff), \
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| 146 | *((c)++)=(unsigned char)(((l)>>16)&0xff), \
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| 147 | *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
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| 148 | *((c)++)=(unsigned char)(((l) )&0xff))
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| 149 |
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| 150 | # define l2n8(l,c) (*((c)++)=(unsigned char)(((l)>>56)&0xff), \
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| 151 | *((c)++)=(unsigned char)(((l)>>48)&0xff), \
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| 152 | *((c)++)=(unsigned char)(((l)>>40)&0xff), \
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| 153 | *((c)++)=(unsigned char)(((l)>>32)&0xff), \
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| 154 | *((c)++)=(unsigned char)(((l)>>24)&0xff), \
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| 155 | *((c)++)=(unsigned char)(((l)>>16)&0xff), \
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| 156 | *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
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| 157 | *((c)++)=(unsigned char)(((l) )&0xff))
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| 158 |
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| 159 | /* NOTE - c is not incremented as per l2c */
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| 160 | # define l2cn(l1,l2,c,n) { \
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| 161 | c+=n; \
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| 162 | switch (n) { \
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| 163 | case 8: *(--(c))=(unsigned char)(((l2)>>24)&0xff); \
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| 164 | case 7: *(--(c))=(unsigned char)(((l2)>>16)&0xff); \
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| 165 | case 6: *(--(c))=(unsigned char)(((l2)>> 8)&0xff); \
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| 166 | case 5: *(--(c))=(unsigned char)(((l2) )&0xff); \
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| 167 | case 4: *(--(c))=(unsigned char)(((l1)>>24)&0xff); \
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| 168 | case 3: *(--(c))=(unsigned char)(((l1)>>16)&0xff); \
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| 169 | case 2: *(--(c))=(unsigned char)(((l1)>> 8)&0xff); \
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| 170 | case 1: *(--(c))=(unsigned char)(((l1) )&0xff); \
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| 171 | } \
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| 172 | }
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| 173 |
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| 174 | # define n2s(c,s) ((s=(((unsigned int)((c)[0]))<< 8)| \
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| 175 | (((unsigned int)((c)[1])) )),(c)+=2)
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| 176 | # define s2n(s,c) (((c)[0]=(unsigned char)(((s)>> 8)&0xff), \
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| 177 | (c)[1]=(unsigned char)(((s) )&0xff)),(c)+=2)
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| 178 |
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| 179 | # define n2l3(c,l) ((l =(((unsigned long)((c)[0]))<<16)| \
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| 180 | (((unsigned long)((c)[1]))<< 8)| \
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| 181 | (((unsigned long)((c)[2])) )),(c)+=3)
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| 182 |
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| 183 | # define l2n3(l,c) (((c)[0]=(unsigned char)(((l)>>16)&0xff), \
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| 184 | (c)[1]=(unsigned char)(((l)>> 8)&0xff), \
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| 185 | (c)[2]=(unsigned char)(((l) )&0xff)),(c)+=3)
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| 186 |
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| 187 | static ossl_inline int ossl_ends_with_dirsep(const char *path)
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| 188 | {
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| 189 | if (*path != '\0')
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| 190 | path += strlen(path) - 1;
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| 191 | # if defined __VMS
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| 192 | if (*path == ']' || *path == '>' || *path == ':')
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| 193 | return 1;
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| 194 | # elif defined _WIN32
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| 195 | if (*path == '\\')
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| 196 | return 1;
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| 197 | # endif
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| 198 | return *path == '/';
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| 199 | }
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| 200 |
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| 201 | static ossl_inline char ossl_determine_dirsep(const char *path)
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| 202 | {
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| 203 | if (ossl_ends_with_dirsep(path))
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| 204 | return '\0';
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| 205 |
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| 206 | # if defined(_WIN32)
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| 207 | return '\\';
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| 208 | # elif defined(__VMS)
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| 209 | return ':';
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| 210 | # else
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| 211 | return '/';
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| 212 | # endif
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| 213 | }
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| 214 |
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| 215 | static ossl_inline int ossl_is_absolute_path(const char *path)
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| 216 | {
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| 217 | # if defined __VMS
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| 218 | if (strchr(path, ':') != NULL
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| 219 | || ((path[0] == '[' || path[0] == '<')
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| 220 | && path[1] != '.' && path[1] != '-'
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| 221 | && path[1] != ']' && path[1] != '>'))
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| 222 | return 1;
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| 223 | # elif defined _WIN32
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| 224 | if (path[0] == '\\'
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| 225 | || (path[0] != '\0' && path[1] == ':'))
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| 226 | return 1;
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| 227 | # endif
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| 228 | return path[0] == '/';
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| 229 | }
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| 230 |
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| 231 | #endif
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