/* $OpenBSD: pem_info.c,v 1.26 2022/11/26 16:08:53 tb Exp $ */ /* 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 #include #include #include #include #include #include #include #include #ifndef OPENSSL_NO_DSA #include #endif #ifndef OPENSSL_NO_RSA #include #endif #include "evp_local.h" STACK_OF(X509_INFO) * PEM_X509_INFO_read(FILE *fp, STACK_OF(X509_INFO) *sk, pem_password_cb *cb, void *u) { BIO *b; STACK_OF(X509_INFO) *ret; if ((b = BIO_new(BIO_s_file())) == NULL) { PEMerror(ERR_R_BUF_LIB); return (0); } BIO_set_fp(b, fp, BIO_NOCLOSE); ret = PEM_X509_INFO_read_bio(b, sk, cb, u); BIO_free(b); return (ret); } STACK_OF(X509_INFO) * PEM_X509_INFO_read_bio(BIO *bp, STACK_OF(X509_INFO) *sk, pem_password_cb *cb, void *u) { X509_INFO *xi = NULL; char *name = NULL, *header = NULL; void *pp; unsigned char *data = NULL; const unsigned char *p; long len; int ok = 0; int num_in, ptype, raw; STACK_OF(X509_INFO) *ret = sk; d2i_of_void *d2i = NULL; if (ret == NULL) { if ((ret = sk_X509_INFO_new_null()) == NULL) { PEMerror(ERR_R_MALLOC_FAILURE); return NULL; } } num_in = sk_X509_INFO_num(ret); if ((xi = X509_INFO_new()) == NULL) goto err; for (;;) { raw = 0; ptype = 0; if (!PEM_read_bio(bp, &name, &header, &data, &len)) { if (ERR_GET_REASON(ERR_peek_last_error()) == PEM_R_NO_START_LINE) { ERR_clear_error(); break; } goto err; } if ((strcmp(name, PEM_STRING_X509) == 0) || (strcmp(name, PEM_STRING_X509_OLD) == 0)) { d2i = (D2I_OF(void))d2i_X509; if (xi->x509 != NULL) { if (!sk_X509_INFO_push(ret, xi)) goto err; if ((xi = X509_INFO_new()) == NULL) goto err; } pp = &(xi->x509); } else if ((strcmp(name, PEM_STRING_X509_TRUSTED) == 0)) { d2i = (D2I_OF(void))d2i_X509_AUX; if (xi->x509 != NULL) { if (!sk_X509_INFO_push(ret, xi)) goto err; if ((xi = X509_INFO_new()) == NULL) goto err; } pp = &(xi->x509); } else if (strcmp(name, PEM_STRING_X509_CRL) == 0) { d2i = (D2I_OF(void))d2i_X509_CRL; if (xi->crl != NULL) { if (!sk_X509_INFO_push(ret, xi)) goto err; if ((xi = X509_INFO_new()) == NULL) goto err; } pp = &(xi->crl); } else #ifndef OPENSSL_NO_RSA if (strcmp(name, PEM_STRING_RSA) == 0) { d2i = (D2I_OF(void))d2i_RSAPrivateKey; if (xi->x_pkey != NULL) { if (!sk_X509_INFO_push(ret, xi)) goto err; if ((xi = X509_INFO_new()) == NULL) goto err; } xi->enc_data = NULL; xi->enc_len = 0; xi->x_pkey = X509_PKEY_new(); if (xi->x_pkey == NULL) goto err; ptype = EVP_PKEY_RSA; pp = &xi->x_pkey->dec_pkey; if (strlen(header) > 10) /* assume encrypted */ raw = 1; } else #endif #ifndef OPENSSL_NO_DSA if (strcmp(name, PEM_STRING_DSA) == 0) { d2i = (D2I_OF(void))d2i_DSAPrivateKey; if (xi->x_pkey != NULL) { if (!sk_X509_INFO_push(ret, xi)) goto err; if ((xi = X509_INFO_new()) == NULL) goto err; } xi->enc_data = NULL; xi->enc_len = 0; xi->x_pkey = X509_PKEY_new(); if (xi->x_pkey == NULL) goto err; ptype = EVP_PKEY_DSA; pp = &xi->x_pkey->dec_pkey; if (strlen(header) > 10) /* assume encrypted */ raw = 1; } else #endif #ifndef OPENSSL_NO_EC if (strcmp(name, PEM_STRING_ECPRIVATEKEY) == 0) { d2i = (D2I_OF(void))d2i_ECPrivateKey; if (xi->x_pkey != NULL) { if (!sk_X509_INFO_push(ret, xi)) goto err; if ((xi = X509_INFO_new()) == NULL) goto err; } xi->enc_data = NULL; xi->enc_len = 0; xi->x_pkey = X509_PKEY_new(); if (xi->x_pkey == NULL) goto err; ptype = EVP_PKEY_EC; pp = &xi->x_pkey->dec_pkey; if (strlen(header) > 10) /* assume encrypted */ raw = 1; } else #endif { d2i = NULL; pp = NULL; } if (d2i != NULL) { if (!raw) { EVP_CIPHER_INFO cipher; if (!PEM_get_EVP_CIPHER_INFO(header, &cipher)) goto err; if (!PEM_do_header(&cipher, data, &len, cb, u)) goto err; p = data; if (ptype) { if (!d2i_PrivateKey(ptype, pp, &p, len)) { PEMerror(ERR_R_ASN1_LIB); goto err; } } else if (d2i(pp, &p, len) == NULL) { PEMerror(ERR_R_ASN1_LIB); goto err; } } else { /* encrypted RSA data */ if (!PEM_get_EVP_CIPHER_INFO(header, &xi->enc_cipher)) goto err; xi->enc_data = (char *)data; xi->enc_len = (int)len; data = NULL; } } else { /* unknown */ } free(name); free(header); free(data); name = NULL; header = NULL; data = NULL; } /* if the last one hasn't been pushed yet and there is anything * in it then add it to the stack ... */ if ((xi->x509 != NULL) || (xi->crl != NULL) || (xi->x_pkey != NULL) || (xi->enc_data != NULL)) { if (!sk_X509_INFO_push(ret, xi)) goto err; xi = NULL; } ok = 1; err: if (!ok) { while (sk_X509_INFO_num(ret) > num_in) X509_INFO_free(sk_X509_INFO_pop(ret)); if (ret != sk) sk_X509_INFO_free(ret); ret = NULL; } X509_INFO_free(xi); free(name); free(header); 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) { EVP_CIPHER_CTX ctx; int i, ret = 0; unsigned char *data = NULL; const char *objstr = NULL; char buf[PEM_BUFSIZE]; unsigned char *iv = NULL; if (enc != NULL) { objstr = OBJ_nid2sn(EVP_CIPHER_nid(enc)); if (objstr == NULL) { PEMerror(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) { PEMerror(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) { PEMerror(PEM_R_UNSUPPORTED_CIPHER); goto err; } /* create the right magic header stuff */ if (strlen(objstr) + 23 + 2 * enc->iv_len + 13 > sizeof buf) { PEMerror(ASN1_R_BUFFER_TOO_SMALL); goto err; } buf[0] = '\0'; PEM_proc_type(buf, PEM_TYPE_ENCRYPTED); PEM_dek_info(buf, objstr, enc->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 */ #ifndef OPENSSL_NO_RSA /* 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; #endif } } /* 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: explicit_bzero((char *)&ctx, sizeof(ctx)); explicit_bzero(buf, PEM_BUFSIZE); return (ret); }