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openssl/crypto/pem/pem_info.c
Sam Roberts df4439186f Remove unnecessary trailing whitespace 
Trim trailing whitespace. It doesn't match OpenSSL coding standards,
AFAICT, and it can cause problems with git tooling.

Trailing whitespace remains in test data and external source.

Reviewed-by: Kurt Roeckx <kurt@roeckx.be>
Reviewed-by: Matthias St. Pierre <Matthias.St.Pierre@ncp-e.com>
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/8092)
2019-02-05 16:25:11 +01:00

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/*
* Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#include <stdio.h>
#include "internal/cryptlib.h"
#include <openssl/buffer.h>
#include <openssl/objects.h>
#include <openssl/evp.h>
#include <openssl/x509.h>
#include <openssl/pem.h>
#include <openssl/rsa.h>
#include <openssl/dsa.h>
#ifndef OPENSSL_NO_STDIO
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) {
PEMerr(PEM_F_PEM_X509_INFO_READ, 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;
}
#endif
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, error = 0;
int ok = 0;
STACK_OF(X509_INFO) *ret = NULL;
unsigned int i, raw, ptype;
d2i_of_void *d2i = 0;
if (sk == NULL) {
if ((ret = sk_X509_INFO_new_null()) == NULL) {
PEMerr(PEM_F_PEM_X509_INFO_READ_BIO, ERR_R_MALLOC_FAILURE);
goto err;
}
} else
ret = sk;
if ((xi = X509_INFO_new()) == NULL)
goto err;
for (;;) {
raw = 0;
ptype = 0;
i = PEM_read_bio(bp, &name, &header, &data, &len);
if (i == 0) {
error = ERR_GET_REASON(ERR_peek_last_error());
if (error == PEM_R_NO_START_LINE) {
ERR_clear_error();
break;
}
goto err;
}
start:
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;
goto start;
}
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;
goto start;
}
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;
goto start;
}
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;
goto start;
}
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 ((int)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;
goto start;
}
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 ((int)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;
goto start;
}
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 ((int)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)) {
PEMerr(PEM_F_PEM_X509_INFO_READ_BIO, ERR_R_ASN1_LIB);
goto err;
}
} else if (d2i(pp, &p, len) == NULL) {
PEMerr(PEM_F_PEM_X509_INFO_READ_BIO, 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 */
}
OPENSSL_free(name);
name = NULL;
OPENSSL_free(header);
header = NULL;
OPENSSL_free(data);
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:
X509_INFO_free(xi);
if (!ok) {
for (i = 0; ((int)i) < sk_X509_INFO_num(ret); i++) {
xi = sk_X509_INFO_value(ret, i);
X509_INFO_free(xi);
}
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;
if (enc != NULL) {
objstr = OBJ_nid2sn(EVP_CIPHER_nid(enc));
if (objstr == NULL
/*
* Check "Proc-Type: 4,Encrypted\nDEK-Info: objstr,hex-iv\n"
* fits into buf
*/
|| (strlen(objstr) + 23 + 2 * EVP_CIPHER_iv_length(enc) + 13)
> sizeof(buf)) {
PEMerr(PEM_F_PEM_X509_INFO_WRITE_BIO, 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) {
PEMerr(PEM_F_PEM_X509_INFO_WRITE_BIO, 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) {
PEMerr(PEM_F_PEM_X509_INFO_WRITE_BIO,
PEM_R_UNSUPPORTED_CIPHER);
goto err;
}
/* Create the right magic header stuff */
buf[0] = '\0';
PEM_proc_type(buf, PEM_TYPE_ENCRYPTED);
PEM_dek_info(buf, objstr, EVP_CIPHER_iv_length(enc),
(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,
EVP_PKEY_get0_RSA(xi->x_pkey->dec_pkey),
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:
OPENSSL_cleanse(buf, PEM_BUFSIZE);
return ret;
}
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