| 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 | #include <stdio.h>
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| 11 | #include <time.h>
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| 12 | #include <errno.h>
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| 13 |
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| 14 | #include "internal/cryptlib.h"
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| 15 | #include <openssl/buffer.h>
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| 16 | #include <openssl/x509.h>
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| 17 | #include <openssl/pem.h>
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| 18 | #include "x509_local.h"
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| 19 |
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| 20 | static int by_file_ctrl(X509_LOOKUP *ctx, int cmd, const char *argc,
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| 21 | long argl, char **ret);
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| 22 | static int by_file_ctrl_ex(X509_LOOKUP *ctx, int cmd, const char *argc,
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| 23 | long argl, char **ret, OSSL_LIB_CTX *libctx,
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| 24 | const char *propq);
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| 25 |
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| 26 |
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| 27 | static X509_LOOKUP_METHOD x509_file_lookup = {
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| 28 | "Load file into cache",
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| 29 | NULL, /* new_item */
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| 30 | NULL, /* free */
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| 31 | NULL, /* init */
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| 32 | NULL, /* shutdown */
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| 33 | by_file_ctrl, /* ctrl */
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| 34 | NULL, /* get_by_subject */
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| 35 | NULL, /* get_by_issuer_serial */
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| 36 | NULL, /* get_by_fingerprint */
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| 37 | NULL, /* get_by_alias */
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| 38 | NULL, /* get_by_subject_ex */
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| 39 | by_file_ctrl_ex, /* ctrl_ex */
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| 40 | };
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| 41 |
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| 42 | X509_LOOKUP_METHOD *X509_LOOKUP_file(void)
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| 43 | {
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| 44 | return &x509_file_lookup;
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| 45 | }
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| 46 |
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| 47 | static int by_file_ctrl_ex(X509_LOOKUP *ctx, int cmd, const char *argp,
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| 48 | long argl, char **ret, OSSL_LIB_CTX *libctx,
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| 49 | const char *propq)
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| 50 | {
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| 51 | int ok = 0;
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| 52 | const char *file;
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| 53 |
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| 54 | switch (cmd) {
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| 55 | case X509_L_FILE_LOAD:
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| 56 | if (argl == X509_FILETYPE_DEFAULT) {
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| 57 | file = ossl_safe_getenv(X509_get_default_cert_file_env());
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| 58 | if (file)
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| 59 | ok = (X509_load_cert_crl_file_ex(ctx, file, X509_FILETYPE_PEM,
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| 60 | libctx, propq) != 0);
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| 61 | else
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| 62 | ok = (X509_load_cert_crl_file_ex(
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| 63 | ctx, X509_get_default_cert_file(),
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| 64 | X509_FILETYPE_PEM, libctx, propq) != 0);
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| 65 |
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| 66 | if (!ok)
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| 67 | ERR_raise(ERR_LIB_X509, X509_R_LOADING_DEFAULTS);
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| 68 | } else {
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| 69 | if (argl == X509_FILETYPE_PEM)
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| 70 | ok = (X509_load_cert_crl_file_ex(ctx, argp, X509_FILETYPE_PEM,
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| 71 | libctx, propq) != 0);
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| 72 | else
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| 73 | ok = (X509_load_cert_file_ex(ctx, argp, (int)argl, libctx,
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| 74 | propq) != 0);
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| 75 | }
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| 76 | break;
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| 77 | }
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| 78 | return ok;
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| 79 | }
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| 80 |
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| 81 | static int by_file_ctrl(X509_LOOKUP *ctx, int cmd,
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| 82 | const char *argp, long argl, char **ret)
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| 83 | {
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| 84 | return by_file_ctrl_ex(ctx, cmd, argp, argl, ret, NULL, NULL);
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| 85 | }
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| 86 |
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| 87 | int X509_load_cert_file_ex(X509_LOOKUP *ctx, const char *file, int type,
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| 88 | OSSL_LIB_CTX *libctx, const char *propq)
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| 89 | {
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| 90 | BIO *in = NULL;
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| 91 | int count = 0;
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| 92 | X509 *x = NULL;
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| 93 |
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| 94 | in = BIO_new(BIO_s_file());
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| 95 |
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| 96 | if ((in == NULL) || (BIO_read_filename(in, file) <= 0)) {
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| 97 | ERR_raise(ERR_LIB_X509, ERR_R_BIO_LIB);
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| 98 | goto err;
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| 99 | }
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| 100 |
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| 101 | x = X509_new_ex(libctx, propq);
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| 102 | if (x == NULL) {
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| 103 | ERR_raise(ERR_LIB_X509, ERR_R_ASN1_LIB);
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| 104 | goto err;
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| 105 | }
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| 106 |
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| 107 | if (type == X509_FILETYPE_PEM) {
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| 108 | for (;;) {
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| 109 | ERR_set_mark();
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| 110 | if (PEM_read_bio_X509_AUX(in, &x, NULL, "") == NULL) {
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| 111 | if ((ERR_GET_REASON(ERR_peek_last_error()) ==
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| 112 | PEM_R_NO_START_LINE) && (count > 0)) {
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| 113 | ERR_pop_to_mark();
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| 114 | break;
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| 115 | } else {
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| 116 | ERR_clear_last_mark();
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| 117 | if (count == 0) {
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| 118 | ERR_raise(ERR_LIB_X509, X509_R_NO_CERTIFICATE_FOUND);
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| 119 | } else {
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| 120 | ERR_raise(ERR_LIB_X509, ERR_R_PEM_LIB);
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| 121 | count = 0;
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| 122 | }
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| 123 | goto err;
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| 124 | }
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| 125 | }
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| 126 | ERR_clear_last_mark();
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| 127 | if (!X509_STORE_add_cert(ctx->store_ctx, x)) {
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| 128 | count = 0;
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| 129 | goto err;
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| 130 | }
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| 131 | /*
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| 132 | * X509_STORE_add_cert() added a reference rather than a copy,
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| 133 | * so we need a fresh X509 object.
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| 134 | */
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| 135 | X509_free(x);
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| 136 | x = X509_new_ex(libctx, propq);
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| 137 | if (x == NULL) {
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| 138 | ERR_raise(ERR_LIB_X509, ERR_R_ASN1_LIB);
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| 139 | count = 0;
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| 140 | goto err;
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| 141 | }
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| 142 | count++;
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| 143 | }
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| 144 | } else if (type == X509_FILETYPE_ASN1) {
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| 145 | if (d2i_X509_bio(in, &x) == NULL) {
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| 146 | ERR_raise(ERR_LIB_X509, X509_R_NO_CERTIFICATE_FOUND);
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| 147 | goto err;
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| 148 | }
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| 149 | count = X509_STORE_add_cert(ctx->store_ctx, x);
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| 150 | } else {
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| 151 | ERR_raise(ERR_LIB_X509, X509_R_BAD_X509_FILETYPE);
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| 152 | goto err;
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| 153 | }
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| 154 | err:
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| 155 | X509_free(x);
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| 156 | BIO_free(in);
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| 157 | return count;
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| 158 | }
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| 159 |
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| 160 | int X509_load_cert_file(X509_LOOKUP *ctx, const char *file, int type)
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| 161 | {
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| 162 | return X509_load_cert_file_ex(ctx, file, type, NULL, NULL);
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| 163 | }
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| 164 |
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| 165 | int X509_load_crl_file(X509_LOOKUP *ctx, const char *file, int type)
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| 166 | {
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| 167 | BIO *in = NULL;
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| 168 | int count = 0;
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| 169 | X509_CRL *x = NULL;
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| 170 |
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| 171 | in = BIO_new(BIO_s_file());
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| 172 |
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| 173 | if ((in == NULL) || (BIO_read_filename(in, file) <= 0)) {
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| 174 | ERR_raise(ERR_LIB_X509, ERR_R_BIO_LIB);
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| 175 | goto err;
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| 176 | }
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| 177 |
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| 178 | if (type == X509_FILETYPE_PEM) {
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| 179 | for (;;) {
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| 180 | x = PEM_read_bio_X509_CRL(in, NULL, NULL, "");
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| 181 | if (x == NULL) {
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| 182 | if ((ERR_GET_REASON(ERR_peek_last_error()) ==
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| 183 | PEM_R_NO_START_LINE) && (count > 0)) {
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| 184 | ERR_clear_error();
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| 185 | break;
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| 186 | } else {
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| 187 | if (count == 0) {
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| 188 | ERR_raise(ERR_LIB_X509, X509_R_NO_CRL_FOUND);
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| 189 | } else {
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| 190 | ERR_raise(ERR_LIB_X509, ERR_R_PEM_LIB);
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| 191 | count = 0;
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| 192 | }
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| 193 | goto err;
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| 194 | }
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| 195 | }
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| 196 | if (!X509_STORE_add_crl(ctx->store_ctx, x)) {
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| 197 | count = 0;
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| 198 | goto err;
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| 199 | }
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| 200 | count++;
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| 201 | X509_CRL_free(x);
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| 202 | x = NULL;
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| 203 | }
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| 204 | } else if (type == X509_FILETYPE_ASN1) {
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| 205 | x = d2i_X509_CRL_bio(in, NULL);
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| 206 | if (x == NULL) {
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| 207 | ERR_raise(ERR_LIB_X509, X509_R_NO_CRL_FOUND);
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| 208 | goto err;
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| 209 | }
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| 210 | count = X509_STORE_add_crl(ctx->store_ctx, x);
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| 211 | } else {
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| 212 | ERR_raise(ERR_LIB_X509, X509_R_BAD_X509_FILETYPE);
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| 213 | goto err;
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| 214 | }
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| 215 | err:
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| 216 | X509_CRL_free(x);
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| 217 | BIO_free(in);
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| 218 | return count;
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| 219 | }
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| 220 |
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| 221 | int X509_load_cert_crl_file_ex(X509_LOOKUP *ctx, const char *file, int type,
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| 222 | OSSL_LIB_CTX *libctx, const char *propq)
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| 223 | {
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| 224 | STACK_OF(X509_INFO) *inf = NULL;
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| 225 | X509_INFO *itmp = NULL;
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| 226 | BIO *in = NULL;
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| 227 | int i, count = 0;
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| 228 |
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| 229 | if (type != X509_FILETYPE_PEM)
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| 230 | return X509_load_cert_file_ex(ctx, file, type, libctx, propq);
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| 231 | in = BIO_new_file(file, "r");
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| 232 | if (in == NULL) {
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| 233 | ERR_raise(ERR_LIB_X509, ERR_R_BIO_LIB);
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| 234 | return 0;
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| 235 | }
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| 236 | inf = PEM_X509_INFO_read_bio_ex(in, NULL, NULL, "", libctx, propq);
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| 237 | BIO_free(in);
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| 238 | if (inf == NULL) {
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| 239 | ERR_raise(ERR_LIB_X509, ERR_R_PEM_LIB);
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| 240 | return 0;
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| 241 | }
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| 242 | for (i = 0; i < sk_X509_INFO_num(inf); i++) {
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| 243 | itmp = sk_X509_INFO_value(inf, i);
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| 244 | if (itmp->x509) {
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| 245 | if (!X509_STORE_add_cert(ctx->store_ctx, itmp->x509)) {
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| 246 | count = 0;
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| 247 | goto err;
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| 248 | }
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| 249 | count++;
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| 250 | }
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| 251 | if (itmp->crl) {
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| 252 | if (!X509_STORE_add_crl(ctx->store_ctx, itmp->crl)) {
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| 253 | count = 0;
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| 254 | goto err;
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| 255 | }
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| 256 | count++;
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| 257 | }
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| 258 | }
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| 259 | if (count == 0)
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| 260 | ERR_raise(ERR_LIB_X509, X509_R_NO_CERTIFICATE_OR_CRL_FOUND);
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| 261 | err:
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| 262 | sk_X509_INFO_pop_free(inf, X509_INFO_free);
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| 263 | return count;
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| 264 | }
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| 265 |
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| 266 | int X509_load_cert_crl_file(X509_LOOKUP *ctx, const char *file, int type)
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| 267 | {
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| 268 | return X509_load_cert_crl_file_ex(ctx, file, type, NULL, NULL);
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| 269 | }
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| 270 |
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