| 1 | /*
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| 2 | * Copyright 1995-2021 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 | #include <stdio.h>
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| 11 | #include "internal/cryptlib.h"
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| 12 | #include <openssl/buffer.h>
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| 13 | #include <openssl/asn1.h>
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| 14 |
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| 15 | #ifndef NO_OLD_ASN1
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| 16 |
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| 17 | # ifndef OPENSSL_NO_STDIO
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| 18 | int ASN1_i2d_fp(i2d_of_void *i2d, FILE *out, const void *x)
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| 19 | {
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| 20 | BIO *b;
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| 21 | int ret;
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| 22 |
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| 23 | if ((b = BIO_new(BIO_s_file())) == NULL) {
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| 24 | ERR_raise(ERR_LIB_ASN1, ERR_R_BUF_LIB);
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| 25 | return 0;
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| 26 | }
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| 27 | BIO_set_fp(b, out, BIO_NOCLOSE);
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| 28 | ret = ASN1_i2d_bio(i2d, b, x);
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| 29 | BIO_free(b);
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| 30 | return ret;
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| 31 | }
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| 32 | # endif
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| 33 |
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| 34 | int ASN1_i2d_bio(i2d_of_void *i2d, BIO *out, const void *x)
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| 35 | {
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| 36 | char *b;
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| 37 | unsigned char *p;
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| 38 | int i, j = 0, n, ret = 1;
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| 39 |
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| 40 | n = i2d(x, NULL);
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| 41 | if (n <= 0)
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| 42 | return 0;
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| 43 |
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| 44 | b = OPENSSL_malloc(n);
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| 45 | if (b == NULL)
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| 46 | return 0;
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| 47 |
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| 48 | p = (unsigned char *)b;
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| 49 | i2d(x, &p);
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| 50 |
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| 51 | for (;;) {
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| 52 | i = BIO_write(out, &(b[j]), n);
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| 53 | if (i == n)
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| 54 | break;
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| 55 | if (i <= 0) {
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| 56 | ret = 0;
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| 57 | break;
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| 58 | }
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| 59 | j += i;
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| 60 | n -= i;
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| 61 | }
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| 62 | OPENSSL_free(b);
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| 63 | return ret;
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| 64 | }
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| 65 |
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| 66 | #endif
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| 67 |
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| 68 | #ifndef OPENSSL_NO_STDIO
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| 69 | int ASN1_item_i2d_fp(const ASN1_ITEM *it, FILE *out, const void *x)
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| 70 | {
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| 71 | BIO *b;
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| 72 | int ret;
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| 73 |
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| 74 | if ((b = BIO_new(BIO_s_file())) == NULL) {
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| 75 | ERR_raise(ERR_LIB_ASN1, ERR_R_BUF_LIB);
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| 76 | return 0;
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| 77 | }
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| 78 | BIO_set_fp(b, out, BIO_NOCLOSE);
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| 79 | ret = ASN1_item_i2d_bio(it, b, x);
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| 80 | BIO_free(b);
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| 81 | return ret;
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| 82 | }
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| 83 | #endif
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| 84 |
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| 85 | int ASN1_item_i2d_bio(const ASN1_ITEM *it, BIO *out, const void *x)
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| 86 | {
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| 87 | unsigned char *b = NULL;
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| 88 | int i, j = 0, n, ret = 1;
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| 89 |
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| 90 | n = ASN1_item_i2d(x, &b, it);
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| 91 | if (b == NULL) {
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| 92 | ERR_raise(ERR_LIB_ASN1, ERR_R_ASN1_LIB);
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| 93 | return 0;
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| 94 | }
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| 95 |
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| 96 | for (;;) {
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| 97 | i = BIO_write(out, &(b[j]), n);
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| 98 | if (i == n)
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| 99 | break;
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| 100 | if (i <= 0) {
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| 101 | ret = 0;
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| 102 | break;
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| 103 | }
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| 104 | j += i;
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| 105 | n -= i;
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| 106 | }
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| 107 | OPENSSL_free(b);
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| 108 | return ret;
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| 109 | }
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| 110 |
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| 111 | BIO *ASN1_item_i2d_mem_bio(const ASN1_ITEM *it, const ASN1_VALUE *val)
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| 112 | {
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| 113 | BIO *res;
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| 114 |
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| 115 | if (it == NULL || val == NULL) {
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| 116 | ERR_raise(ERR_LIB_ASN1, ERR_R_PASSED_NULL_PARAMETER);
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| 117 | return NULL;
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| 118 | }
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| 119 |
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| 120 | if ((res = BIO_new(BIO_s_mem())) == NULL)
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| 121 | return NULL;
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| 122 | if (ASN1_item_i2d_bio(it, res, val) <= 0) {
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| 123 | BIO_free(res);
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| 124 | res = NULL;
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| 125 | }
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| 126 | return res;
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| 127 | }
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