| /* crypto/pem/pem_info.c */ |
| /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
| * All rights reserved. |
| * |
| * This package is an SSL implementation written |
| * by Eric Young (eay@cryptsoft.com). |
| * The implementation was written so as to conform with Netscapes SSL. |
| * |
| * This library is free for commercial and non-commercial use as long as |
| * the following conditions are aheared to. The following conditions |
| * apply to all code found in this distribution, be it the RC4, RSA, |
| * lhash, DES, etc., code; not just the SSL code. The SSL documentation |
| * included with this distribution is covered by the same copyright terms |
| * except that the holder is Tim Hudson (tjh@cryptsoft.com). |
| * |
| * Copyright remains Eric Young's, and as such any Copyright notices in |
| * the code are not to be removed. |
| * If this package is used in a product, Eric Young should be given attribution |
| * as the author of the parts of the library used. |
| * This can be in the form of a textual message at program startup or |
| * in documentation (online or textual) provided with the package. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. All advertising materials mentioning features or use of this software |
| * must display the following acknowledgement: |
| * "This product includes cryptographic software written by |
| * Eric Young (eay@cryptsoft.com)" |
| * The word 'cryptographic' can be left out if the rouines from the library |
| * being used are not cryptographic related :-). |
| * 4. If you include any Windows specific code (or a derivative thereof) from |
| * the apps directory (application code) you must include an acknowledgement: |
| * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" |
| * |
| * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * |
| * The licence and distribution terms for any publically available version or |
| * derivative of this code cannot be changed. i.e. this code cannot simply be |
| * copied and put under another distribution licence |
| * [including the GNU Public Licence.] |
| */ |
| |
| #include <openssl/pem.h> |
| |
| #include <assert.h> |
| #include <stdio.h> |
| #include <string.h> |
| |
| #include <openssl/dsa.h> |
| #include <openssl/err.h> |
| #include <openssl/evp.h> |
| #include <openssl/mem.h> |
| #include <openssl/obj.h> |
| #include <openssl/rsa.h> |
| #include <openssl/x509.h> |
| |
| #ifndef OPENSSL_NO_FP_API |
| STACK_OF(X509_INFO) *PEM_X509_INFO_read(FILE *fp, STACK_OF(X509_INFO) *sk, |
| pem_password_cb *cb, void *u) |
| { |
| BIO *b = BIO_new_fp(fp, BIO_NOCLOSE); |
| if (b == NULL) { |
| OPENSSL_PUT_ERROR(PEM, ERR_R_BUF_LIB); |
| return 0; |
| } |
| STACK_OF(X509_INFO) *ret = PEM_X509_INFO_read_bio(b, sk, cb, u); |
| BIO_free(b); |
| return ret; |
| } |
| #endif |
| |
| enum parse_result_t { |
| parse_ok, |
| parse_error, |
| parse_new_entry, |
| }; |
| |
| static enum parse_result_t parse_x509(X509_INFO *info, const uint8_t *data, |
| size_t len, int key_type) |
| { |
| if (info->x509 != NULL) { |
| return parse_new_entry; |
| } |
| info->x509 = d2i_X509(NULL, &data, len); |
| return info->x509 != NULL ? parse_ok : parse_error; |
| } |
| |
| static enum parse_result_t parse_x509_aux(X509_INFO *info, const uint8_t *data, |
| size_t len, int key_type) |
| { |
| if (info->x509 != NULL) { |
| return parse_new_entry; |
| } |
| info->x509 = d2i_X509_AUX(NULL, &data, len); |
| return info->x509 != NULL ? parse_ok : parse_error; |
| } |
| |
| static enum parse_result_t parse_crl(X509_INFO *info, const uint8_t *data, |
| size_t len, int key_type) |
| { |
| if (info->crl != NULL) { |
| return parse_new_entry; |
| } |
| info->crl = d2i_X509_CRL(NULL, &data, len); |
| return info->crl != NULL ? parse_ok : parse_error; |
| } |
| |
| static enum parse_result_t parse_key(X509_INFO *info, const uint8_t *data, |
| size_t len, int key_type) |
| { |
| if (info->x_pkey != NULL) { |
| return parse_new_entry; |
| } |
| info->x_pkey = X509_PKEY_new(); |
| if (info->x_pkey == NULL) { |
| return parse_error; |
| } |
| info->x_pkey->dec_pkey = d2i_PrivateKey(key_type, NULL, &data, len); |
| return info->x_pkey->dec_pkey != NULL ? parse_ok : parse_error; |
| } |
| |
| STACK_OF(X509_INFO) *PEM_X509_INFO_read_bio(BIO *bp, STACK_OF(X509_INFO) *sk, |
| pem_password_cb *cb, void *u) |
| { |
| X509_INFO *info = NULL; |
| char *name = NULL, *header = NULL; |
| unsigned char *data = NULL; |
| long len; |
| int ok = 0; |
| STACK_OF(X509_INFO) *ret = NULL; |
| |
| if (sk == NULL) { |
| ret = sk_X509_INFO_new_null(); |
| if (ret == NULL) { |
| OPENSSL_PUT_ERROR(PEM, ERR_R_MALLOC_FAILURE); |
| return NULL; |
| } |
| } else { |
| ret = sk; |
| } |
| size_t orig_num = sk_X509_INFO_num(ret); |
| |
| info = X509_INFO_new(); |
| if (info == NULL) { |
| goto err; |
| } |
| |
| for (;;) { |
| if (!PEM_read_bio(bp, &name, &header, &data, &len)) { |
| uint32_t error = ERR_peek_last_error(); |
| if (ERR_GET_LIB(error) == ERR_LIB_PEM && |
| ERR_GET_REASON(error) == PEM_R_NO_START_LINE) { |
| ERR_clear_error(); |
| break; |
| } |
| goto err; |
| } |
| |
| enum parse_result_t (*parse_function)(X509_INFO *, const uint8_t *, |
| size_t, int) = NULL; |
| int key_type = EVP_PKEY_NONE; |
| if (strcmp(name, PEM_STRING_X509) == 0 || |
| strcmp(name, PEM_STRING_X509_OLD) == 0) { |
| parse_function = parse_x509; |
| } else if (strcmp(name, PEM_STRING_X509_TRUSTED) == 0) { |
| parse_function = parse_x509_aux; |
| } else if (strcmp(name, PEM_STRING_X509_CRL) == 0) { |
| parse_function = parse_crl; |
| } else if (strcmp(name, PEM_STRING_RSA) == 0) { |
| parse_function = parse_key; |
| key_type = EVP_PKEY_RSA; |
| } else if (strcmp(name, PEM_STRING_DSA) == 0) { |
| parse_function = parse_key; |
| key_type = EVP_PKEY_DSA; |
| } else if (strcmp(name, PEM_STRING_ECPRIVATEKEY) == 0) { |
| parse_function = parse_key; |
| key_type = EVP_PKEY_EC; |
| } |
| |
| /* If a private key has a header, assume it is encrypted. */ |
| if (key_type != EVP_PKEY_NONE && strlen(header) > 10) { |
| if (info->x_pkey != NULL) { |
| if (!sk_X509_INFO_push(ret, info)) { |
| goto err; |
| } |
| info = X509_INFO_new(); |
| if (info == NULL) { |
| goto err; |
| } |
| } |
| /* Historically, raw entries pushed an empty key. */ |
| info->x_pkey = X509_PKEY_new(); |
| if (info->x_pkey == NULL || |
| !PEM_get_EVP_CIPHER_INFO(header, &info->enc_cipher)) { |
| goto err; |
| } |
| info->enc_data = (char *)data; |
| info->enc_len = (int)len; |
| data = NULL; |
| } else if (parse_function != NULL) { |
| EVP_CIPHER_INFO cipher; |
| if (!PEM_get_EVP_CIPHER_INFO(header, &cipher) || |
| !PEM_do_header(&cipher, data, &len, cb, u)) { |
| goto err; |
| } |
| enum parse_result_t result = |
| parse_function(info, data, len, key_type); |
| if (result == parse_new_entry) { |
| if (!sk_X509_INFO_push(ret, info)) { |
| goto err; |
| } |
| info = X509_INFO_new(); |
| if (info == NULL) { |
| goto err; |
| } |
| result = parse_function(info, data, len, key_type); |
| } |
| if (result != parse_ok) { |
| OPENSSL_PUT_ERROR(PEM, ERR_R_ASN1_LIB); |
| goto err; |
| } |
| } |
| OPENSSL_free(name); |
| OPENSSL_free(header); |
| OPENSSL_free(data); |
| name = NULL; |
| header = NULL; |
| data = NULL; |
| } |
| |
| /* Push the last entry on the stack if not empty. */ |
| if (info->x509 != NULL || info->crl != NULL || |
| info->x_pkey != NULL || info->enc_data != NULL) { |
| if (!sk_X509_INFO_push(ret, info)) { |
| goto err; |
| } |
| info = NULL; |
| } |
| |
| ok = 1; |
| |
| err: |
| X509_INFO_free(info); |
| if (!ok) { |
| while (sk_X509_INFO_num(ret) > orig_num) { |
| X509_INFO_free(sk_X509_INFO_pop(ret)); |
| } |
| if (ret != sk) { |
| sk_X509_INFO_free(ret); |
| } |
| ret = NULL; |
| } |
| |
| OPENSSL_free(name); |
| OPENSSL_free(header); |
| OPENSSL_free(data); |
| return ret; |
| } |
| |
| /* A TJH addition */ |
| int PEM_X509_INFO_write_bio(BIO *bp, X509_INFO *xi, EVP_CIPHER *enc, |
| unsigned char *kstr, int klen, |
| pem_password_cb *cb, void *u) |
| { |
| int i, ret = 0; |
| unsigned char *data = NULL; |
| const char *objstr = NULL; |
| char buf[PEM_BUFSIZE]; |
| unsigned char *iv = NULL; |
| unsigned iv_len = 0; |
| |
| if (enc != NULL) { |
| iv_len = EVP_CIPHER_iv_length(enc); |
| objstr = OBJ_nid2sn(EVP_CIPHER_nid(enc)); |
| if (objstr == NULL) { |
| OPENSSL_PUT_ERROR(PEM, PEM_R_UNSUPPORTED_CIPHER); |
| goto err; |
| } |
| } |
| |
| /* |
| * now for the fun part ... if we have a private key then we have to be |
| * able to handle a not-yet-decrypted key being written out correctly ... |
| * if it is decrypted or it is non-encrypted then we use the base code |
| */ |
| if (xi->x_pkey != NULL) { |
| if ((xi->enc_data != NULL) && (xi->enc_len > 0)) { |
| if (enc == NULL) { |
| OPENSSL_PUT_ERROR(PEM, PEM_R_CIPHER_IS_NULL); |
| goto err; |
| } |
| |
| /* copy from weirdo names into more normal things */ |
| iv = xi->enc_cipher.iv; |
| data = (unsigned char *)xi->enc_data; |
| i = xi->enc_len; |
| |
| /* |
| * we take the encryption data from the internal stuff rather |
| * than what the user has passed us ... as we have to match |
| * exactly for some strange reason |
| */ |
| objstr = OBJ_nid2sn(EVP_CIPHER_nid(xi->enc_cipher.cipher)); |
| if (objstr == NULL) { |
| OPENSSL_PUT_ERROR(PEM, PEM_R_UNSUPPORTED_CIPHER); |
| goto err; |
| } |
| |
| /* create the right magic header stuff */ |
| assert(strlen(objstr) + 23 + 2 * iv_len + 13 <= sizeof buf); |
| buf[0] = '\0'; |
| PEM_proc_type(buf, PEM_TYPE_ENCRYPTED); |
| PEM_dek_info(buf, objstr, iv_len, (char *)iv); |
| |
| /* use the normal code to write things out */ |
| i = PEM_write_bio(bp, PEM_STRING_RSA, buf, data, i); |
| if (i <= 0) |
| goto err; |
| } else { |
| /* Add DSA/DH */ |
| /* normal optionally encrypted stuff */ |
| if (PEM_write_bio_RSAPrivateKey(bp, |
| xi->x_pkey->dec_pkey->pkey.rsa, |
| enc, kstr, klen, cb, u) <= 0) |
| goto err; |
| } |
| } |
| |
| /* if we have a certificate then write it out now */ |
| if ((xi->x509 != NULL) && (PEM_write_bio_X509(bp, xi->x509) <= 0)) |
| goto err; |
| |
| /* |
| * we are ignoring anything else that is loaded into the X509_INFO |
| * structure for the moment ... as I don't need it so I'm not coding it |
| * here and Eric can do it when this makes it into the base library --tjh |
| */ |
| |
| ret = 1; |
| |
| err: |
| OPENSSL_cleanse(buf, PEM_BUFSIZE); |
| return ret; |
| } |
