Imported Upstream version 2.3_rc1

1 files changed, 0 insertions, 476 deletions

diff --git a/cryptoapi.c b/cryptoapi.c
deleted file mode 100644
index 3365cd7..0000000
--- a/cryptoapi.c
+++ /dev/null
@@ -1,476 +0,0 @@
-/*
- * Copyright (c) 2004 Peter 'Luna' Runestig <peter@runestig.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without modifi-
- * cation, are permitted provided that the following conditions are met:
- *
- *   o  Redistributions of source code must retain the above copyright notice,
- *      this list of conditions and the following disclaimer.
- *
- *   o  Redistributions in binary form must reproduce the above copyright no-
- *      tice, this list of conditions and the following disclaimer in the do-
- *      cumentation and/or other materials provided with the distribution.
- *
- *   o  The names of the contributors may not be used to endorse or promote
- *      products derived from this software without specific prior written
- *      permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * ``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 REGENTS OR CONTRIBUTORS BE LI-
- * ABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUEN-
- * TIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEV-
- * ER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABI-
- * LITY, 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.
- */
-
-#include "syshead.h"
-
-#if defined(WIN32) && defined(USE_CRYPTO) && defined(USE_SSL)
-
-#include <openssl/ssl.h>
-#include <openssl/err.h>
-#include <windows.h>
-#include <wincrypt.h>
-#include <stdio.h>
-#include <ctype.h>
-#include <assert.h>
-
-#ifdef __MINGW32_VERSION
-/* MinGW w32api is incomplete when it comes to CryptoAPI, as per version 3.1
- * anyway. This is a hack around that problem. */
-#define CALG_SSL3_SHAMD5 (ALG_CLASS_HASH | ALG_TYPE_ANY | ALG_SID_SSL3SHAMD5)
-#define CERT_SYSTEM_STORE_LOCATION_SHIFT 16
-#define CERT_SYSTEM_STORE_CURRENT_USER_ID 1
-#define CERT_SYSTEM_STORE_CURRENT_USER (CERT_SYSTEM_STORE_CURRENT_USER_ID << CERT_SYSTEM_STORE_LOCATION_SHIFT)
-#define CERT_STORE_READONLY_FLAG 0x00008000
-#define CERT_STORE_OPEN_EXISTING_FLAG 0x00004000
-#define CRYPT_ACQUIRE_COMPARE_KEY_FLAG 0x00000004
-static HINSTANCE crypt32dll = NULL;
-static BOOL WINAPI (*OpenVPNCryptAcquireCertificatePrivateKey) (PCCERT_CONTEXT pCert, DWORD dwFlags,
-  void *pvReserved, HCRYPTPROV *phCryptProv, DWORD *pdwKeySpec, BOOL *pfCallerFreeProv) = NULL;
-#else
-#define OpenVPNCryptAcquireCertificatePrivateKey CryptAcquireCertificatePrivateKey
-#endif
-
-/* Size of an SSL signature: MD5+SHA1 */
-#define SSL_SIG_LENGTH	36
-
-/* try to funnel any Windows/CryptoAPI error messages to OpenSSL ERR_... */
-#define ERR_LIB_CRYPTOAPI (ERR_LIB_USER + 69)	/* 69 is just a number... */
-#define CRYPTOAPIerr(f)   err_put_ms_error(GetLastError(), (f), __FILE__, __LINE__)
-#define CRYPTOAPI_F_CERT_OPEN_SYSTEM_STORE		    100
-#define CRYPTOAPI_F_CERT_FIND_CERTIFICATE_IN_STORE	    101
-#define CRYPTOAPI_F_CRYPT_ACQUIRE_CERTIFICATE_PRIVATE_KEY   102
-#define CRYPTOAPI_F_CRYPT_CREATE_HASH			    103
-#define CRYPTOAPI_F_CRYPT_GET_HASH_PARAM		    104
-#define CRYPTOAPI_F_CRYPT_SET_HASH_PARAM		    105
-#define CRYPTOAPI_F_CRYPT_SIGN_HASH			    106
-#define CRYPTOAPI_F_LOAD_LIBRARY			    107
-#define CRYPTOAPI_F_GET_PROC_ADDRESS			    108
-
-static ERR_STRING_DATA CRYPTOAPI_str_functs[] =	{
-    { ERR_PACK(ERR_LIB_CRYPTOAPI, 0, 0),				    "microsoft cryptoapi"},
-    { ERR_PACK(0, CRYPTOAPI_F_CERT_OPEN_SYSTEM_STORE, 0),		    "CertOpenSystemStore" },
-    { ERR_PACK(0, CRYPTOAPI_F_CERT_FIND_CERTIFICATE_IN_STORE, 0),	    "CertFindCertificateInStore" },
-    { ERR_PACK(0, CRYPTOAPI_F_CRYPT_ACQUIRE_CERTIFICATE_PRIVATE_KEY, 0),    "CryptAcquireCertificatePrivateKey" },
-    { ERR_PACK(0, CRYPTOAPI_F_CRYPT_CREATE_HASH, 0),			    "CryptCreateHash" },
-    { ERR_PACK(0, CRYPTOAPI_F_CRYPT_GET_HASH_PARAM, 0),			    "CryptGetHashParam" },
-    { ERR_PACK(0, CRYPTOAPI_F_CRYPT_SET_HASH_PARAM, 0),			    "CryptSetHashParam" },
-    { ERR_PACK(0, CRYPTOAPI_F_CRYPT_SIGN_HASH, 0),			    "CryptSignHash" },
-    { ERR_PACK(0, CRYPTOAPI_F_LOAD_LIBRARY, 0),			    	    "LoadLibrary" },
-    { ERR_PACK(0, CRYPTOAPI_F_GET_PROC_ADDRESS, 0),			    "GetProcAddress" },
-    { 0, NULL }
-};
-
-typedef struct _CAPI_DATA {
-    const CERT_CONTEXT *cert_context;
-    HCRYPTPROV crypt_prov;
-    DWORD key_spec;
-    BOOL free_crypt_prov;
-} CAPI_DATA;
-
-static char *ms_error_text(DWORD ms_err)
-{
-    LPVOID lpMsgBuf = NULL;
-    char *rv = NULL;
-
-    FormatMessage(
-	FORMAT_MESSAGE_ALLOCATE_BUFFER |
-	FORMAT_MESSAGE_FROM_SYSTEM |
-	FORMAT_MESSAGE_IGNORE_INSERTS,
-	NULL, ms_err,
-	MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), /* Default language */
-	(LPTSTR) &lpMsgBuf, 0, NULL);
-    if (lpMsgBuf) {
-	char *p;
-	rv = strdup(lpMsgBuf);
-	LocalFree(lpMsgBuf);
-	/* trim to the left */
-	if (rv)
-	    for (p = rv + strlen(rv) - 1; p >= rv; p--) {
-		if (isspace(*p))
-		    *p = '\0';
-		else
-		    break;
-	    }
-    }
-    return rv;
-}
-
-static void err_put_ms_error(DWORD ms_err, int func, const char *file, int line)
-{
-    static int init = 0;
-#   define ERR_MAP_SZ 16
-    static struct {
-	int err;
-	DWORD ms_err;	    /* I don't think we get more than 16 *different* errors */
-    } err_map[ERR_MAP_SZ];  /* in here, before we give up the whole thing...        */
-    int i;
-
-    if (ms_err == 0)
-	/* 0 is not an error */
-	return;
-    if (!init) {
-	ERR_load_strings(ERR_LIB_CRYPTOAPI, CRYPTOAPI_str_functs);
-	memset(&err_map, 0, sizeof(err_map));
-	init++;
-    }
-    /* since MS error codes are 32 bit, and the ones in the ERR_... system is
-     * only 12, we must have a mapping table between them.  */
-    for (i = 0; i < ERR_MAP_SZ; i++) {
-	if (err_map[i].ms_err == ms_err) {
-	    ERR_PUT_error(ERR_LIB_CRYPTOAPI, func, err_map[i].err, file, line);
-	    break;
-	} else if (err_map[i].ms_err == 0 ) {
-	    /* end of table, add new entry */
-	    ERR_STRING_DATA *esd = calloc(2, sizeof(*esd));
-	    if (esd == NULL)
-		break;
-	    err_map[i].ms_err = ms_err;
-	    err_map[i].err = esd->error = i + 100;
-	    esd->string = ms_error_text(ms_err);
-	    ERR_load_strings(ERR_LIB_CRYPTOAPI, esd);
-	    ERR_PUT_error(ERR_LIB_CRYPTOAPI, func, err_map[i].err, file, line);
-	    break;
-	}
-    }
-}
-
-/* encrypt */
-static int rsa_pub_enc(int flen, const unsigned char *from, unsigned char *to, RSA *rsa, int padding)
-{
-    /* I haven't been able to trigger this one, but I want to know if it happens... */
-    assert(0);
-
-    return 0;
-}
-
-/* verify arbitrary data */
-static int rsa_pub_dec(int flen, const unsigned char *from, unsigned char *to, RSA *rsa, int padding)
-{
-    /* I haven't been able to trigger this one, but I want to know if it happens... */
-    assert(0);
-
-    return 0;
-}
-
-/* sign arbitrary data */
-static int rsa_priv_enc(int flen, const unsigned char *from, unsigned char *to, RSA *rsa, int padding)
-{
-    CAPI_DATA *cd = (CAPI_DATA *) rsa->meth->app_data;
-    HCRYPTHASH hash;
-    DWORD hash_size, len, i;
-    unsigned char *buf;
-
-    if (cd == NULL) {
-	RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT, ERR_R_PASSED_NULL_PARAMETER);
-	return 0;
-    }
-    if (padding != RSA_PKCS1_PADDING) {
-	/* AFAICS, CryptSignHash() *always* uses PKCS1 padding. */
-	RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT, RSA_R_UNKNOWN_PADDING_TYPE);
-	return 0;
-    }
-    /* Unfortunately, there is no "CryptSign()" function in CryptoAPI, that would
-     * be way to straightforward for M$, I guess... So we have to do it this
-     * tricky way instead, by creating a "Hash", and load the already-made hash
-     * from 'from' into it.  */
-    /* For now, we only support NID_md5_sha1 */
-    if (flen != SSL_SIG_LENGTH) {
-	RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT, RSA_R_INVALID_MESSAGE_LENGTH);
-	return 0;
-    }
-    if (!CryptCreateHash(cd->crypt_prov, CALG_SSL3_SHAMD5, 0, 0, &hash)) {
-	CRYPTOAPIerr(CRYPTOAPI_F_CRYPT_CREATE_HASH);
-	return 0;
-    }
-    len = sizeof(hash_size);
-    if (!CryptGetHashParam(hash, HP_HASHSIZE, (BYTE *) &hash_size, &len, 0)) {
-	CRYPTOAPIerr(CRYPTOAPI_F_CRYPT_GET_HASH_PARAM);
-        CryptDestroyHash(hash);
-	return 0;
-    }
-    if ((int) hash_size != flen) {
-	RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT, RSA_R_INVALID_MESSAGE_LENGTH);
-        CryptDestroyHash(hash);
-	return 0;
-    }
-    if (!CryptSetHashParam(hash, HP_HASHVAL, (BYTE * ) from, 0)) {
-	CRYPTOAPIerr(CRYPTOAPI_F_CRYPT_SET_HASH_PARAM);
-        CryptDestroyHash(hash);
-	return 0;
-    }
-
-    len = RSA_size(rsa);
-    buf = malloc(len);
-    if (buf == NULL) {
-	RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT, ERR_R_MALLOC_FAILURE);
-        CryptDestroyHash(hash);
-	return 0;
-    }
-    if (!CryptSignHash(hash, cd->key_spec, NULL, 0, buf, &len)) {
-	CRYPTOAPIerr(CRYPTOAPI_F_CRYPT_SIGN_HASH);
-        CryptDestroyHash(hash);
-        free(buf);
-	return 0;
-    }
-    /* and now, we have to reverse the byte-order in the result from CryptSignHash()... */
-    for (i = 0; i < len; i++)
-	to[i] = buf[len - i - 1];
-    free(buf);
-
-    CryptDestroyHash(hash);
-    return len;
-}
-
-/* decrypt */
-static int rsa_priv_dec(int flen, const unsigned char *from, unsigned char *to, RSA *rsa, int padding)
-{
-    /* I haven't been able to trigger this one, but I want to know if it happens... */
-    assert(0);
-
-    return 0;
-}
-
-/* called at RSA_new */
-static int init(RSA *rsa)
-{
-
-    return 0;
-}
-
-/* called at RSA_free */
-static int finish(RSA *rsa)
-{
-    CAPI_DATA *cd = (CAPI_DATA *) rsa->meth->app_data;
-
-    if (cd == NULL)
-	return 0;
-    if (cd->crypt_prov && cd->free_crypt_prov)
-	CryptReleaseContext(cd->crypt_prov, 0);
-    if (cd->cert_context)
-	CertFreeCertificateContext(cd->cert_context);
-    free(rsa->meth->app_data);
-    free((char *) rsa->meth);
-    rsa->meth = NULL;
-    return 1;
-}
-
-static const CERT_CONTEXT *find_certificate_in_store(const char *cert_prop, HCERTSTORE cert_store)
-{
-    /* Find, and use, the desired certificate from the store. The
-     * 'cert_prop' certificate search string can look like this:
-     * SUBJ:<certificate substring to match>
-     * THUMB:<certificate thumbprint hex value>, e.g.
-     *     THUMB:f6 49 24 41 01 b4 fb 44 0c ce f4 36 ae d0 c4 c9 df 7a b6 28
-     */
-    const CERT_CONTEXT *rv = NULL;
-
-    if (!strncmp(cert_prop, "SUBJ:", 5)) {
-	/* skip the tag */
-	cert_prop += 5;
-	rv = CertFindCertificateInStore(cert_store, X509_ASN_ENCODING | PKCS_7_ASN_ENCODING,
-		0, CERT_FIND_SUBJECT_STR_A, cert_prop, NULL);
-
-    } else if (!strncmp(cert_prop, "THUMB:", 6)) {
-	unsigned char hash[255];
-	char *p;
-	int i, x = 0;
-	CRYPT_HASH_BLOB blob;
-
-	/* skip the tag */
-	cert_prop += 6;
-	for (p = (char *) cert_prop, i = 0; *p && i < sizeof(hash); i++) {
-	    if (*p >= '0' && *p <= '9')
-		x = (*p - '0') << 4;
-	    else if (*p >= 'A' && *p <= 'F')
-		x = (*p - 'A' + 10) << 4;
-	    else if (*p >= 'a' && *p <= 'f')
-		x = (*p - 'a' + 10) << 4;
-	    if (!*++p)	/* unexpected end of string */
-		break;
-	    if (*p >= '0' && *p <= '9')
-		x += *p - '0';
-	    else if (*p >= 'A' && *p <= 'F')
-		x += *p - 'A' + 10;
-	    else if (*p >= 'a' && *p <= 'f')
-		x += *p - 'a' + 10;
-	    hash[i] = x;
-	    /* skip any space(s) between hex numbers */
-	    for (p++; *p && *p == ' '; p++);
-	}
-	blob.cbData = i;
-	blob.pbData = (unsigned char *) &hash;
-	rv = CertFindCertificateInStore(cert_store, X509_ASN_ENCODING | PKCS_7_ASN_ENCODING,
-		0, CERT_FIND_HASH, &blob, NULL);
-
-    }
-
-    return rv;
-}
-
-int SSL_CTX_use_CryptoAPI_certificate(SSL_CTX *ssl_ctx, const char *cert_prop)
-{
-    HCERTSTORE cs;
-    X509 *cert = NULL;
-    RSA *rsa = NULL, *pub_rsa;
-    CAPI_DATA *cd = calloc(1, sizeof(*cd));
-    RSA_METHOD *my_rsa_method = calloc(1, sizeof(*my_rsa_method));
-
-    if (cd == NULL || my_rsa_method == NULL) {
-	SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_FILE, ERR_R_MALLOC_FAILURE);
-	goto err;
-    }
-    /* search CURRENT_USER first, then LOCAL_MACHINE */
-    cs = CertOpenStore((LPCSTR) CERT_STORE_PROV_SYSTEM, 0, 0, CERT_SYSTEM_STORE_CURRENT_USER |
-		       CERT_STORE_OPEN_EXISTING_FLAG | CERT_STORE_READONLY_FLAG, L"MY");
-    if (cs == NULL) {
-	CRYPTOAPIerr(CRYPTOAPI_F_CERT_OPEN_SYSTEM_STORE);
-	goto err;
-    }
-    cd->cert_context = find_certificate_in_store(cert_prop, cs);
-    CertCloseStore(cs, 0);
-    if (!cd->cert_context) {
-	cs = CertOpenStore((LPCSTR) CERT_STORE_PROV_SYSTEM, 0, 0, CERT_SYSTEM_STORE_LOCAL_MACHINE |
-			   CERT_STORE_OPEN_EXISTING_FLAG | CERT_STORE_READONLY_FLAG, L"MY");
-	if (cs == NULL) {
-	    CRYPTOAPIerr(CRYPTOAPI_F_CERT_OPEN_SYSTEM_STORE);
-	    goto err;
-	}
-	cd->cert_context = find_certificate_in_store(cert_prop, cs);
-	CertCloseStore(cs, 0);
-	if (cd->cert_context == NULL) {
-	    CRYPTOAPIerr(CRYPTOAPI_F_CERT_FIND_CERTIFICATE_IN_STORE);
-	    goto err;
-	}
-    }
-
-    /* cert_context->pbCertEncoded is the cert X509 DER encoded. */
-    cert = d2i_X509(NULL, (const unsigned char **) &cd->cert_context->pbCertEncoded,
-		    cd->cert_context->cbCertEncoded);
-    if (cert == NULL) {
-	SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_FILE, ERR_R_ASN1_LIB);
-	goto err;
-    }
-
-    /* set up stuff to use the private key */
-#ifdef __MINGW32_VERSION
-    /* MinGW w32api is incomplete when it comes to CryptoAPI, as per version 3.1
-     * anyway. This is a hack around that problem. */
-    if (crypt32dll == NULL) {
-	crypt32dll = LoadLibrary("crypt32");
-	if (crypt32dll == NULL) {
-	    CRYPTOAPIerr(CRYPTOAPI_F_LOAD_LIBRARY);
-	    goto err;
-	}
-    }
-    if (OpenVPNCryptAcquireCertificatePrivateKey == NULL) {
-	OpenVPNCryptAcquireCertificatePrivateKey = GetProcAddress(crypt32dll,
-		"CryptAcquireCertificatePrivateKey");
-	if (OpenVPNCryptAcquireCertificatePrivateKey == NULL) {
-	    CRYPTOAPIerr(CRYPTOAPI_F_GET_PROC_ADDRESS);
-	    goto err;
-	}
-    }
-#endif
-    if (!OpenVPNCryptAcquireCertificatePrivateKey(cd->cert_context, CRYPT_ACQUIRE_COMPARE_KEY_FLAG,
-	    NULL, &cd->crypt_prov, &cd->key_spec, &cd->free_crypt_prov)) {
-	/* if we don't have a smart card reader here, and we try to access a
-	 * smart card certificate, we get:
-	 * "Error 1223: The operation was canceled by the user." */
-	CRYPTOAPIerr(CRYPTOAPI_F_CRYPT_ACQUIRE_CERTIFICATE_PRIVATE_KEY);
-	goto err;
-    }
-    /* here we don't need to do CryptGetUserKey() or anything; all necessary key
-     * info is in cd->cert_context, and then, in cd->crypt_prov.  */
-
-    my_rsa_method->name = "Microsoft CryptoAPI RSA Method";
-    my_rsa_method->rsa_pub_enc = rsa_pub_enc;
-    my_rsa_method->rsa_pub_dec = rsa_pub_dec;
-    my_rsa_method->rsa_priv_enc = rsa_priv_enc;
-    my_rsa_method->rsa_priv_dec = rsa_priv_dec;
-    /* my_rsa_method->init = init; */
-    my_rsa_method->finish = finish;
-    my_rsa_method->flags = RSA_METHOD_FLAG_NO_CHECK;
-    my_rsa_method->app_data = (char *) cd;
-
-    rsa = RSA_new();
-    if (rsa == NULL) {
-	SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_FILE, ERR_R_MALLOC_FAILURE);
-	goto err;
-    }
-
-    /* cert->cert_info->key->pkey is NULL until we call SSL_CTX_use_certificate(),
-     * so we do it here then...  */
-    if (!SSL_CTX_use_certificate(ssl_ctx, cert))
-	goto err;
-    /* the public key */
-    pub_rsa = cert->cert_info->key->pkey->pkey.rsa;
-    /* SSL_CTX_use_certificate() increased the reference count in 'cert', so
-     * we decrease it here with X509_free(), or it will never be cleaned up. */
-    X509_free(cert);
-    cert = NULL;
-
-    /* I'm not sure about what we have to fill in in the RSA, trying out stuff... */
-    /* rsa->n indicates the key size */
-    rsa->n = BN_dup(pub_rsa->n);
-    rsa->flags |= RSA_FLAG_EXT_PKEY;
-    if (!RSA_set_method(rsa, my_rsa_method))
-	goto err;
-
-    if (!SSL_CTX_use_RSAPrivateKey(ssl_ctx, rsa))
-	goto err;
-    /* SSL_CTX_use_RSAPrivateKey() increased the reference count in 'rsa', so
-     * we decrease it here with RSA_free(), or it will never be cleaned up. */
-    RSA_free(rsa);
-    return 1;
-
-  err:
-    if (cert)
-	X509_free(cert);
-    if (rsa)
-	RSA_free(rsa);
-    else {
-	if (my_rsa_method)
-	    free(my_rsa_method);
-	if (cd) {
-	    if (cd->free_crypt_prov && cd->crypt_prov)
-		CryptReleaseContext(cd->crypt_prov, 0);
-	    if (cd->cert_context)
-		CertFreeCertificateContext(cd->cert_context);
-	    free(cd);
-	}
-    }
-    return 0;
-}
-
-#else
-#ifdef _MSC_VER  /* Dummy function needed to avoid empty file compiler warning in Microsoft VC */
-static void dummy (void) {}
-#endif
-#endif				/* WIN32 */