forked from cyassl/cyassl
/
ssl.c
4183 lines (3264 loc) · 108 KB
/
ssl.c
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/* ssl.c
*
* Copyright (C) 2006-2011 Sawtooth Consulting Ltd.
*
* This file is part of CyaSSL.
*
* CyaSSL is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* CyaSSL is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#include "ssl.h"
#include "cyassl_int.h"
#include "cyassl_error.h"
#include "coding.h"
#if defined(OPENSSL_EXTRA) || defined(HAVE_WEBSERVER)
#include "evp.h"
#endif
#ifdef OPENSSL_EXTRA
/* openssl headers begin */
#include "hmac.h"
#include "crypto.h"
#include "des.h"
/* openssl headers end, cyassl internal headers next */
#include "ctc_hmac.h"
#include "random.h"
#include "des3.h"
#include "ctc_md4.h"
#include "coding.h"
#endif
#ifdef HAVE_ERRNO_H
#include <errno.h>
#endif
#define TRUE 1
#define FALSE 0
#ifndef min
static INLINE word32 min(word32 a, word32 b)
{
return a > b ? b : a;
}
#endif /* min */
SSL_CTX* SSL_CTX_new(SSL_METHOD* method)
{
SSL_CTX* ctx = (SSL_CTX*) XMALLOC(sizeof(SSL_CTX), 0, DYNAMIC_TYPE_CTX);
CYASSL_ENTER("SSL_CTX_new");
if (ctx)
InitSSL_Ctx(ctx, method);
CYASSL_LEAVE("SSL_CTX_new", 0);
return ctx;
}
void SSL_CTX_free(SSL_CTX* ctx)
{
CYASSL_ENTER("SSL_CTX_free");
if (ctx)
FreeSSL_Ctx(ctx);
CYASSL_LEAVE("SSL_CTX_free", 0);
}
SSL* SSL_new(SSL_CTX* ctx)
{
SSL* ssl = (SSL*) XMALLOC(sizeof(SSL), ctx->heap, DYNAMIC_TYPE_SSL);
CYASSL_ENTER("SSL_new");
if (ssl)
if (InitSSL(ssl, ctx) < 0) {
FreeSSL(ssl);
ssl = 0;
}
CYASSL_LEAVE("SSL_new", 0);
return ssl;
}
void SSL_free(SSL* ssl)
{
CYASSL_ENTER("SSL_free");
if (ssl)
FreeSSL(ssl);
CYASSL_LEAVE("SSL_free", 0);
}
int SSL_set_fd(SSL* ssl, int fd)
{
CYASSL_ENTER("SSL_set_fd");
ssl->rfd = fd; /* not used directly to allow IO callbacks */
ssl->wfd = fd;
ssl->IOCB_ReadCtx = &ssl->rfd;
ssl->IOCB_WriteCtx = &ssl->wfd;
CYASSL_LEAVE("SSL_set_fd", SSL_SUCCESS);
return SSL_SUCCESS;
}
int SSL_get_fd(const SSL* ssl)
{
CYASSL_ENTER("SSL_get_fd");
CYASSL_LEAVE("SSL_get_fd", ssl->rfd);
return ssl->rfd;
}
int CyaSSL_negotiate(SSL* ssl)
{
int err = SSL_FATAL_ERROR;
CYASSL_ENTER("CyaSSL_negotiate");
#ifndef NO_CYASSL_SERVER
if (ssl->options.side == SERVER_END)
err = SSL_accept(ssl);
#endif
#ifndef NO_CYASSL_CLIENT
if (ssl->options.side == CLIENT_END)
err = SSL_connect(ssl);
#endif
CYASSL_LEAVE("CyaSSL_negotiate", err);
if (err == SSL_SUCCESS)
return 0;
else
return err;
}
/* server CTX Diffie-Hellman parameters */
int CyaSSL_SetTmpDH(SSL* ssl, unsigned char* p,int pSz,unsigned char* g,int gSz)
{
byte havePSK = 0;
CYASSL_ENTER("CyaSSL_SetTmpDH");
if (ssl == NULL || p == NULL || g == NULL) return BAD_FUNC_ARG;
if (ssl->options.side != SERVER_END)
return SIDE_ERROR;
if (ssl->buffers.serverDH_P.buffer)
XFREE(ssl->buffers.serverDH_P.buffer, ssl->ctx->heap, DYNAMIC_TYPE_DH);
if (ssl->buffers.serverDH_G.buffer)
XFREE(ssl->buffers.serverDH_G.buffer, ssl->ctx->heap, DYNAMIC_TYPE_DH);
ssl->buffers.serverDH_P.buffer = (byte*)XMALLOC(pSz, ssl->ctx->heap,
DYNAMIC_TYPE_DH);
if (ssl->buffers.serverDH_P.buffer == NULL)
return MEMORY_E;
ssl->buffers.serverDH_G.buffer = (byte*)XMALLOC(gSz, ssl->ctx->heap,
DYNAMIC_TYPE_DH);
if (ssl->buffers.serverDH_G.buffer == NULL) {
XFREE(ssl->buffers.serverDH_P.buffer, ssl->ctx->heap, DYNAMIC_TYPE_DH);
return MEMORY_E;
}
ssl->buffers.serverDH_P.length = pSz;
ssl->buffers.serverDH_G.length = gSz;
XMEMCPY(ssl->buffers.serverDH_P.buffer, p, pSz);
XMEMCPY(ssl->buffers.serverDH_G.buffer, g, gSz);
ssl->options.haveDH = 1;
#ifndef NO_PSK
havePSK = ssl->options.havePSK;
#endif
InitSuites(&ssl->suites, ssl->version, ssl->options.haveDH,
havePSK, ssl->options.haveNTRU, ssl->options.haveECDSA,
ssl->ctx->method->side);
CYASSL_LEAVE("CyaSSL_SetTmpDH", 0);
return 0;
}
int SSL_write(SSL* ssl, const void* data, int sz)
{
int ret;
CYASSL_ENTER("SSL_write()");
#ifdef HAVE_ERRNO_H
errno = 0;
#endif
ret = SendData(ssl, data, sz);
CYASSL_LEAVE("SSL_write()", ret);
if (ret < 0)
return SSL_FATAL_ERROR;
else
return ret;
}
int SSL_read(SSL* ssl, void* data, int sz)
{
int ret;
CYASSL_ENTER("SSL_read()");
#ifdef HAVE_ERRNO_H
errno = 0;
#endif
ret = ReceiveData(ssl, (byte*)data, min(sz, OUTPUT_RECORD_SIZE));
CYASSL_LEAVE("SSL_read()", ret);
if (ret < 0)
return SSL_FATAL_ERROR;
else
return ret;
}
int SSL_shutdown(SSL* ssl)
{
CYASSL_ENTER("SSL_shutdown()");
if (ssl->options.quietShutdown) {
CYASSL_MSG("quiet shutdown, no close notify sent");
return 0;
}
/* try to send close notify, not an error if can't */
if (!ssl->options.isClosed && !ssl->options.connReset &&
!ssl->options.sentNotify) {
ssl->error = SendAlert(ssl, alert_warning, close_notify);
if (ssl->error < 0) {
CYASSL_ERROR(ssl->error);
return SSL_FATAL_ERROR;
}
ssl->options.sentNotify = 1; /* don't send close_notify twice */
}
CYASSL_LEAVE("SSL_shutdown()", ssl->error);
ssl->error = SSL_ERROR_SYSCALL; /* simulate OpenSSL behavior */
return 0;
}
int SSL_get_error(SSL* ssl, int ret)
{
CYASSL_ENTER("SSL_get_error");
CYASSL_LEAVE("SSL_get_error", ssl->error);
if (ret > 0)
return SSL_ERROR_NONE;
if (ssl->error == WANT_READ)
return SSL_ERROR_WANT_READ; /* convert to OpenSSL type */
else if (ssl->error == WANT_WRITE)
return SSL_ERROR_WANT_WRITE; /* convert to OpenSSL type */
else if (ssl->error == ZERO_RETURN)
return SSL_ERROR_ZERO_RETURN; /* convert to OpenSSL type */
return ssl->error;
}
int SSL_want_read(SSL* ssl)
{
CYASSL_ENTER("SSL_want_read");
if (ssl->error == WANT_READ)
return 1;
return 0;
}
int SSL_want_write(SSL* ssl)
{
CYASSL_ENTER("SSL_want_write");
if (ssl->error == WANT_WRITE)
return 1;
return 0;
}
char* ERR_error_string(unsigned long errNumber, char* data)
{
static const char* msg = "Please supply a buffer for error string";
CYASSL_ENTER("ERR_error_string");
if (data) {
SetErrorString(errNumber, data);
return data;
}
return (char*)msg;
}
void ERR_error_string_n(unsigned long e, char* buf, unsigned long len)
{
CYASSL_ENTER("ERR_error_string_n");
if (len) ERR_error_string(e, buf);
}
#ifndef NO_FILESYSTEM
void ERR_print_errors_fp(FILE* fp, int err)
{
char data[MAX_ERROR_SZ + 1];
CYASSL_ENTER("ERR_print_errors_fp");
SetErrorString(err, data);
fprintf(fp, "%s", data);
}
#endif
int SSL_pending(SSL* ssl)
{
CYASSL_ENTER("SSL_pending");
return ssl->buffers.clearOutputBuffer.length;
}
static CyaSSL_Mutex ca_mutex; /* CA signers mutex */
/* does CA already exist on list */
int IsCA(SSL_CTX* ctx, byte* hash)
{
Signer* signers;
int ret = 0;
if (LockMutex(&ca_mutex) != 0)
return ret;
signers = ctx->caList;
while (signers) {
if (XMEMCMP(hash, signers->hash, SHA_DIGEST_SIZE) == 0) {
ret = 1;
break;
}
signers = signers->next;
}
UnLockMutex(&ca_mutex);
return ret;
}
/* return CA if found, otherwise NULL */
Signer* GetCA(Signer* signers, byte* hash)
{
Signer* ret = 0;
if (LockMutex(&ca_mutex) != 0)
return ret;
while (signers) {
if (XMEMCMP(hash, signers->hash, SHA_DIGEST_SIZE) == 0) {
ret = signers;
break;
}
signers = signers->next;
}
UnLockMutex(&ca_mutex);
return ret;
}
/* owns der, cyassl_int now uses too */
int AddCA(SSL_CTX* ctx, buffer der)
{
word32 ret;
DecodedCert cert;
Signer* signer = 0;
CYASSL_MSG("Adding a CA");
InitDecodedCert(&cert, der.buffer, ctx->heap);
ret = ParseCert(&cert, der.length, CA_TYPE, ctx->verifyPeer, 0);
CYASSL_MSG(" Parsed new CA");
if (ret == 0) {
/* take over signer parts */
signer = MakeSigner(ctx->heap);
if (!signer)
ret = MEMORY_ERROR;
else {
signer->keyOID = cert.keyOID;
signer->publicKey = cert.publicKey;
signer->pubKeySize = cert.pubKeySize;
signer->name = cert.subjectCN;
XMEMCPY(signer->hash, cert.subjectHash, SHA_DIGEST_SIZE);
cert.publicKey = 0; /* don't free here */
cert.subjectCN = 0;
if (LockMutex(&ca_mutex) == 0) {
signer->next = ctx->caList;
ctx->caList = signer; /* takes ownership */
UnLockMutex(&ca_mutex);
}
else
FreeSigners(signer, ctx->heap);
}
}
CYASSL_MSG(" Freeing Parsed CA");
FreeDecodedCert(&cert);
CYASSL_MSG(" Freeing der CA");
XFREE(der.buffer, ctx->heap, DYNAMIC_TYPE_CA);
CYASSL_MSG(" OK Freeing der CA");
if (ret == 0) return SSL_SUCCESS;
return ret;
}
#ifndef NO_SESSION_CACHE
/* basic config gives a cache with 33 sessions, adequate for clients and
embedded servers
BIG_SESSION_CACHE allows 1055 sessions, adequate for servers that aren't
under heavy load, basically allows 200 new sessions per minute
HUGE_SESSION_CACHE yields 65,791 sessions, for servers under heavy load,
allows over 13,000 new sessions per minute or over 200 new sessions per
second
*/
#ifdef HUGE_SESSION_CACHE
#define SESSIONS_PER_ROW 11
#define SESSION_ROWS 5981
#elif defined(BIG_SESSION_CACHE)
#define SESSIONS_PER_ROW 5
#define SESSION_ROWS 211
#else
#define SESSIONS_PER_ROW 3
#define SESSION_ROWS 11
#endif
typedef struct SessionRow {
int nextIdx; /* where to place next one */
int totalCount; /* sessions ever on this row */
SSL_SESSION Sessions[SESSIONS_PER_ROW];
} SessionRow;
static SessionRow SessionCache[SESSION_ROWS];
static CyaSSL_Mutex session_mutex; /* SessionCache mutex */
#endif /* NO_SESSION_CACHE */
/* Remove PEM header/footer, convert to ASN1, store any encrypted data
info->consumed tracks of PEM bytes consumed in case multiple parts */
static int PemToDer(const unsigned char* buff, long sz, int type,
buffer* der, void* heap, EncryptedInfo* info, int* eccKey)
{
char header[PEM_LINE_LEN];
char footer[PEM_LINE_LEN];
char* headerEnd;
char* footerEnd;
char* consumedEnd;
long neededSz;
int pkcs8 = 0;
int pkcs8Enc = 0;
int dynamicType;
(void)heap;
if (type == CERT_TYPE || type == CA_TYPE) {
XSTRNCPY(header, "-----BEGIN CERTIFICATE-----", sizeof(header));
XSTRNCPY(footer, "-----END CERTIFICATE-----", sizeof(footer));
dynamicType = (type == CA_TYPE) ? DYNAMIC_TYPE_CA :
DYNAMIC_TYPE_CERT;
} else {
XSTRNCPY(header, "-----BEGIN RSA PRIVATE KEY-----", sizeof(header));
XSTRNCPY(footer, "-----END RSA PRIVATE KEY-----", sizeof(footer));
dynamicType = DYNAMIC_TYPE_KEY;
}
/* find header */
headerEnd = XSTRSTR((char*)buff, header);
if (!headerEnd && type == PRIVATEKEY_TYPE) { /* may be pkcs8 */
XSTRNCPY(header, "-----BEGIN PRIVATE KEY-----", sizeof(header));
XSTRNCPY(footer, "-----END PRIVATE KEY-----", sizeof(footer));
headerEnd = XSTRSTR((char*)buff, header);
if (headerEnd)
pkcs8 = 1;
else {
XSTRNCPY(header, "-----BEGIN ENCRYPTED PRIVATE KEY-----",
sizeof(header));
XSTRNCPY(footer, "-----END ENCRYPTED PRIVATE KEY-----",
sizeof(footer));
headerEnd = XSTRSTR((char*)buff, header);
if (headerEnd)
pkcs8Enc = 1;
}
}
if (!headerEnd && type == PRIVATEKEY_TYPE) { /* may be ecc */
XSTRNCPY(header, "-----BEGIN EC PRIVATE KEY-----", sizeof(header));
XSTRNCPY(footer, "-----END EC PRIVATE KEY-----", sizeof(footer));
headerEnd = XSTRSTR((char*)buff, header);
if (headerEnd)
*eccKey = 1;
}
if (!headerEnd)
return SSL_BAD_FILE;
headerEnd += XSTRLEN(header);
/* get next line */
if (headerEnd[0] == '\n')
headerEnd++;
else if (headerEnd[1] == '\n')
headerEnd += 2;
else
return SSL_BAD_FILE;
#if defined(OPENSSL_EXTRA) || defined(HAVE_WEBSERVER)
{
/* remove encrypted header if there */
char encHeader[] = "Proc-Type";
char* line = XSTRSTR((char*)buff, encHeader);
if (line) {
char* newline;
char* finish;
char* start = XSTRSTR(line, "DES");
if (!start)
start = XSTRSTR(line, "AES");
if (!start) return SSL_BAD_FILE;
if (!info) return SSL_BAD_FILE;
finish = XSTRSTR(start, ",");
if (start && finish && (start < finish)) {
newline = XSTRSTR(finish, "\r");
XMEMCPY(info->name, start, finish - start);
info->name[finish - start] = 0;
XMEMCPY(info->iv, finish + 1, sizeof(info->iv));
if (!newline) newline = XSTRSTR(finish, "\n");
if (newline && (newline > finish)) {
info->ivSz = (word32)(newline - (finish + 1));
info->set = 1;
}
else
return SSL_BAD_FILE;
}
else
return SSL_BAD_FILE;
/* eat blank line */
while (*newline == '\r' || *newline == '\n')
newline++;
headerEnd = newline;
}
}
#endif /* OPENSSL_EXTRA || HAVE_WEBSERVER */
/* find footer */
footerEnd = XSTRSTR((char*)buff, footer);
if (!footerEnd) return SSL_BAD_FILE;
consumedEnd = footerEnd + XSTRLEN(footer);
/* get next line */
if (consumedEnd[0] == '\n')
consumedEnd++;
else if (consumedEnd[1] == '\n')
consumedEnd += 2;
else
return SSL_BAD_FILE;
info->consumed = (long)(consumedEnd - (char*)buff);
/* set up der buffer */
neededSz = (long)(footerEnd - headerEnd);
if (neededSz > sz || neededSz < 0) return SSL_BAD_FILE;
der->buffer = (byte*) XMALLOC(neededSz, heap, dynamicType);
if (!der->buffer) return MEMORY_ERROR;
der->length = neededSz;
if (Base64Decode((byte*)headerEnd, neededSz, der->buffer,
&der->length) < 0)
return SSL_BAD_FILE;
if (pkcs8)
return ToTraditional(der->buffer, der->length);
#ifdef OPENSSL_EXTRA
if (pkcs8Enc) {
int passwordSz;
char password[80];
if (!info->ctx->passwd_cb)
return SSL_BAD_FILE; /* no callback error */
passwordSz = info->ctx->passwd_cb(password, sizeof(password), 0,
info->ctx->userdata);
return ToTraditionalEnc(der->buffer, der->length, password,
passwordSz);
}
#endif
return 0;
}
/* process the buffer buff, legnth sz, into ctx of format and type
used tracks bytes consumed, userChain specifies a user cert chain
to pass during the handshake */
static int ProcessBuffer(SSL_CTX* ctx, const unsigned char* buff,
long sz, int format, int type, SSL* ssl,
long* used, int userChain)
{
EncryptedInfo info;
buffer der; /* holds DER or RAW (for NTRU) */
int dynamicType;
int eccKey = 0;
info.set = 0;
info.ctx = ctx;
info.consumed = 0;
der.buffer = 0;
if (used)
*used = sz; /* used bytes default to sz, PEM chain may shorten*/
if (format != SSL_FILETYPE_ASN1 && format != SSL_FILETYPE_PEM
&& format != SSL_FILETYPE_RAW)
return SSL_BAD_FILETYPE;
if (type == CA_TYPE)
dynamicType = DYNAMIC_TYPE_CA;
else if (type == CERT_TYPE)
dynamicType = DYNAMIC_TYPE_CERT;
else
dynamicType = DYNAMIC_TYPE_KEY;
if (format == SSL_FILETYPE_PEM) {
int ret = PemToDer(buff, sz, type, &der, ctx->heap, &info, &eccKey);
if (ret < 0) {
XFREE(der.buffer, ctx->heap, dynamicType);
return ret;
}
if (used)
*used = info.consumed;
/* we may have a user cert chain, try to consume */
if (userChain && type == CERT_TYPE && info.consumed < sz) {
byte staticBuffer[FILE_BUFFER_SIZE]; /* tmp chain buffer */
byte* chainBuffer = staticBuffer;
int dynamicBuffer = 0;
word32 bufferSz = sizeof(staticBuffer);
long consumed = info.consumed;
word32 idx = 0;
if ( (sz - consumed) > (int)bufferSz) {
CYASSL_MSG("Growing Tmp Chain Buffer");
bufferSz = sz - consumed; /* will shrink to actual size */
chainBuffer = (byte*)XMALLOC(bufferSz, ctx->heap,
DYNAMIC_FILE_TYPE);
if (chainBuffer == NULL) {
XFREE(der.buffer, ctx->heap, dynamicType);
return MEMORY_E;
}
dynamicBuffer = 1;
}
CYASSL_MSG("Processing Cert Chain");
while (consumed < sz) {
long left;
buffer part;
info.consumed = 0;
part.buffer = 0;
ret = PemToDer(buff + consumed, sz - consumed, type, &part,
ctx->heap, &info, &eccKey);
if (ret == 0) {
if ( (idx + part.length) > bufferSz) {
CYASSL_MSG(" Cert Chain bigger than buffer");
ret = BUFFER_E;
}
else {
c32to24(part.length, &chainBuffer[idx]);
idx += CERT_HEADER_SZ;
XMEMCPY(&chainBuffer[idx], part.buffer,part.length);
idx += part.length;
consumed += info.consumed;
if (used)
*used += info.consumed;
}
}
XFREE(part.buffer, ctx->heap, dynamicType);
if (ret < 0) {
CYASSL_MSG(" Error in Cert in Chain");
XFREE(der.buffer, ctx->heap, dynamicType);
return ret;
}
CYASSL_MSG(" Consumed another Cert in Chain");
left = sz - consumed;
if (left > 0 && left < CERT_MIN_SIZE) {
CYASSL_MSG(" Non Cert at end of file");
break;
}
}
CYASSL_MSG("Finished Processing Cert Chain");
ctx->certChain.buffer = (byte*)XMALLOC(idx, ctx->heap,
dynamicType);
if (ctx->certChain.buffer) {
ctx->certChain.length = idx;
XMEMCPY(ctx->certChain.buffer, chainBuffer, idx);
}
if (dynamicBuffer)
XFREE(chainBuffer, ctx->heap, DYNAMIC_FILE_TYPE);
if (ctx->certChain.buffer == NULL) {
XFREE(der.buffer, ctx->heap, dynamicType);
return MEMORY_E;
}
}
}
else { /* ASN1 (DER) or RAW (NTRU) */
der.buffer = (byte*) XMALLOC(sz, ctx->heap, dynamicType);
if (!der.buffer) return MEMORY_ERROR;
XMEMCPY(der.buffer, buff, sz);
der.length = sz;
}
#if defined(OPENSSL_EXTRA) || defined(HAVE_WEBSERVER)
if (info.set) {
/* decrypt */
char password[80];
int passwordSz;
int ret;
byte key[AES_256_KEY_SIZE];
byte iv[AES_IV_SIZE];
if (!ctx->passwd_cb) {
XFREE(der.buffer, ctx->heap, dynamicType);
return NO_PASSWORD;
}
/* use file's salt for key derivation, hex decode first */
if (Base16Decode(info.iv, info.ivSz, info.iv, &info.ivSz) != 0) {
XFREE(der.buffer, ctx->heap, dynamicType);
return ASN_INPUT_E;
}
passwordSz = ctx->passwd_cb(password, sizeof(password), 0,
ctx->userdata);
if ( (ret = EVP_BytesToKey(info.name, "MD5", info.iv,
(byte*)password, passwordSz, 1, key, iv)) <= 0) {
XFREE(der.buffer, ctx->heap, dynamicType);
return ret;
}
if (XSTRNCMP(info.name, "DES-CBC", 7) == 0) {
Des enc;
Des_SetKey(&enc, key, info.iv, DES_DECRYPTION);
Des_CbcDecrypt(&enc, der.buffer, der.buffer, der.length);
}
else if (XSTRNCMP(info.name, "DES-EDE3-CBC", 13) == 0) {
Des3 enc;
Des3_SetKey(&enc, key, info.iv, DES_DECRYPTION);
Des3_CbcDecrypt(&enc, der.buffer, der.buffer, der.length);
}
else if (XSTRNCMP(info.name, "AES-128-CBC", 13) == 0) {
Aes enc;
AesSetKey(&enc, key, AES_128_KEY_SIZE, info.iv, AES_DECRYPTION);
AesCbcDecrypt(&enc, der.buffer, der.buffer, der.length);
}
else if (XSTRNCMP(info.name, "AES-192-CBC", 13) == 0) {
Aes enc;
AesSetKey(&enc, key, AES_192_KEY_SIZE, info.iv, AES_DECRYPTION);
AesCbcDecrypt(&enc, der.buffer, der.buffer, der.length);
}
else if (XSTRNCMP(info.name, "AES-256-CBC", 13) == 0) {
Aes enc;
AesSetKey(&enc, key, AES_256_KEY_SIZE, info.iv, AES_DECRYPTION);
AesCbcDecrypt(&enc, der.buffer, der.buffer, der.length);
}
else {
XFREE(der.buffer, ctx->heap, dynamicType);
return SSL_BAD_FILE;
}
}
#endif /* OPENSSL_EXTRA || HAVE_WEBSERVER */
if (type == CA_TYPE)
return AddCA(ctx, der); /* takes der over */
else if (type == CERT_TYPE) {
if (ssl) {
if (ssl->buffers.weOwnCert && ssl->buffers.certificate.buffer)
XFREE(ssl->buffers.certificate.buffer, ctx->heap,
dynamicType);
ssl->buffers.certificate = der;
ssl->buffers.weOwnCert = 1;
}
else {
if (ctx->certificate.buffer)
XFREE(ctx->certificate.buffer, ctx->heap, dynamicType);
ctx->certificate = der; /* takes der over */
}
}
else if (type == PRIVATEKEY_TYPE) {
if (ssl) {
if (ssl->buffers.weOwnKey && ssl->buffers.key.buffer)
XFREE(ssl->buffers.key.buffer, ctx->heap, dynamicType);
ssl->buffers.key = der;
ssl->buffers.weOwnKey = 1;
}
else {
if (ctx->privateKey.buffer)
XFREE(ctx->privateKey.buffer, ctx->heap, dynamicType);
ctx->privateKey = der; /* takes der over */
}
}
else {
XFREE(der.buffer, ctx->heap, dynamicType);
return SSL_BAD_CERTTYPE;
}
if (type == PRIVATEKEY_TYPE && format != SSL_FILETYPE_RAW) {
if (!eccKey) {
/* make sure RSA key can be used */
RsaKey key;
word32 idx = 0;
InitRsaKey(&key, 0);
if (RsaPrivateKeyDecode(der.buffer,&idx,&key,der.length) != 0) {
#ifdef HAVE_ECC
/* could have DER ECC, no easy way to tell */
if (format == SSL_FILETYPE_ASN1)
eccKey = 1; /* try it out */
#endif
if (!eccKey) {
FreeRsaKey(&key);
return SSL_BAD_FILE;
}
}
FreeRsaKey(&key);
}
#ifdef HAVE_ECC
if (eccKey ) {
/* make sure ECC key can be used */
word32 idx = 0;
ecc_key key;
ecc_init(&key);
if (EccPrivateKeyDecode(der.buffer,&idx,&key,der.length) != 0) {
ecc_free(&key);
return SSL_BAD_FILE;
}
ecc_free(&key);
ctx->haveECDSA = 1;
}
#endif /* HAVE_ECC */
}
return SSL_SUCCESS;
}
#ifndef NO_FILESYSTEM
#ifndef MICRIUM
#define XFILE FILE
#define XFOPEN fopen
#define XFSEEK fseek
#define XFTELL ftell
#define XREWIND rewind
#define XFREAD fread
#define XFCLOSE fclose
#define XSEEK_END SEEK_END
#else
#include <fs.h>
#define XFILE FS_FILE
#define XFOPEN fs_fopen
#define XFSEEK fs_fseek
#define XFTELL fs_ftell
#define XREWIND fs_rewind
#define XFREAD fs_fread
#define XFCLOSE fs_fclose
#define XSEEK_END FS_SEEK_END
#endif
/* CA PEM file for verification, may have multiple/chain certs to process */
static int ProcessChainBuffer(SSL_CTX* ctx, const unsigned char* buff,
long sz, int format, int type, SSL* ssl)
{
long used = 0;
int ret = 0;
CYASSL_MSG("Processing CA PEM file");
while (used < sz) {
long consumed = 0;
long left;
ret = ProcessBuffer(ctx, buff + used, sz - used, format, type, ssl,
&consumed, 0);
if (ret < 0)
break;
CYASSL_MSG(" Processed a CA");
used += consumed;
left = sz - used;
if (left > 0 && left < CERT_MIN_SIZE) { /* non cert stuff at eof */
CYASSL_MSG(" Non CA cert at eof");
break;
}
}
return ret;
}
/* process a file with name fname into ctx of format and type
userChain specifies a user certificate chain to pass during handshake */
static int ProcessFile(SSL_CTX* ctx, const char* fname, int format, int type,
SSL* ssl, int userChain)
{
byte staticBuffer[FILE_BUFFER_SIZE];
byte* myBuffer = staticBuffer;
int dynamic = 0;
int ret;
long sz = 0;
XFILE* file = XFOPEN(fname, "rb");
if (!file) return SSL_BAD_FILE;
XFSEEK(file, 0, XSEEK_END);
sz = XFTELL(file);
XREWIND(file);
if (sz > (long)sizeof(staticBuffer)) {
CYASSL_MSG("Getting dynamic buffer");
myBuffer = (byte*) XMALLOC(sz, ctx->heap, DYNAMIC_TYPE_FILE);
if (myBuffer == NULL) {
XFCLOSE(file);
return SSL_BAD_FILE;
}
dynamic = 1;
}
if ( (ret = XFREAD(myBuffer, sz, 1, file)) < 0)
ret = SSL_BAD_FILE;
else {
if (type == CA_TYPE && format == SSL_FILETYPE_PEM)
ret = ProcessChainBuffer(ctx, myBuffer, sz, format, type, ssl);
else
ret = ProcessBuffer(ctx, myBuffer, sz, format, type, ssl, NULL,
userChain);
}
XFCLOSE(file);
if (dynamic) XFREE(myBuffer, ctx->heap, DYNAMIC_TYPE_FILE);
return ret;
}
/* just one for now TODO: add dir support from path */
int SSL_CTX_load_verify_locations(SSL_CTX* ctx, const char* file,
const char* path)
{
CYASSL_ENTER("SSL_CTX_load_verify_locations");
(void)path;
if (ctx == NULL || file == NULL)