#include "curl_setup.h"
#ifdef USE_CYASSL
#ifdef HAVE_LIMITS_H
#include <limits.h>
#endif
#include "urldata.h"
#include "sendf.h"
#include "inet_pton.h"
#include "cyassl.h"
#include "sslgen.h"
#include "parsedate.h"
#include "connect.h"
#include "select.h"
#include "rawstr.h"
#define _MPRINTF_REPLACE
#include <curl/mprintf.h>
#include "curl_memory.h"
#include "memdebug.h"
#include <cyassl/ssl.h>
#include <cyassl/error.h>
static Curl_recv cyassl_recv;
static Curl_send cyassl_send;
static int do_file_type(const char *type)
{
if(!type || !type[0])
return SSL_FILETYPE_PEM;
if(Curl_raw_equal(type, "PEM"))
return SSL_FILETYPE_PEM;
if(Curl_raw_equal(type, "DER"))
return SSL_FILETYPE_ASN1;
return -1;
}
static CURLcode
cyassl_connect_step1(struct connectdata *conn,
int sockindex)
{
struct SessionHandle *data = conn->data;
struct ssl_connect_data* conssl = &conn->ssl[sockindex];
SSL_METHOD* req_method = NULL;
void* ssl_sessionid = NULL;
curl_socket_t sockfd = conn->sock[sockindex];
if(conssl->state == ssl_connection_complete)
return CURLE_OK;
if(data->set.ssl.version == CURL_SSLVERSION_SSLv2) {
failf(data, "CyaSSL does not support SSLv2");
return CURLE_SSL_CONNECT_ERROR;
}
switch(data->set.ssl.version) {
case CURL_SSLVERSION_DEFAULT:
req_method = SSLv23_client_method();
break;
case CURL_SSLVERSION_TLSv1:
req_method = TLSv1_client_method();
break;
case CURL_SSLVERSION_SSLv3:
req_method = SSLv3_client_method();
break;
default:
req_method = TLSv1_client_method();
}
if(!req_method) {
failf(data, "SSL: couldn't create a method!");
return CURLE_OUT_OF_MEMORY;
}
if(conssl->ctx)
SSL_CTX_free(conssl->ctx);
conssl->ctx = SSL_CTX_new(req_method);
if(!conssl->ctx) {
failf(data, "SSL: couldn't create a context!");
return CURLE_OUT_OF_MEMORY;
}
#ifndef NO_FILESYSTEM
if(data->set.str[STRING_SSL_CAFILE]) {
if(!SSL_CTX_load_verify_locations(conssl->ctx,
data->set.str[STRING_SSL_CAFILE],
data->set.str[STRING_SSL_CAPATH])) {
if(data->set.ssl.verifypeer) {
failf(data,"error setting certificate verify locations:\n"
" CAfile: %s\n CApath: %s",
data->set.str[STRING_SSL_CAFILE]?
data->set.str[STRING_SSL_CAFILE]: "none",
data->set.str[STRING_SSL_CAPATH]?
data->set.str[STRING_SSL_CAPATH] : "none");
return CURLE_SSL_CACERT_BADFILE;
}
else {
infof(data, "error setting certificate verify locations,"
" continuing anyway:\n");
}
}
else {
infof(data, "successfully set certificate verify locations:\n");
}
infof(data,
" CAfile: %s\n"
" CApath: %s\n",
data->set.str[STRING_SSL_CAFILE] ? data->set.str[STRING_SSL_CAFILE]:
"none",
data->set.str[STRING_SSL_CAPATH] ? data->set.str[STRING_SSL_CAPATH]:
"none");
}
if(data->set.str[STRING_CERT] && data->set.str[STRING_KEY]) {
int file_type = do_file_type(data->set.str[STRING_CERT_TYPE]);
if(SSL_CTX_use_certificate_file(conssl->ctx, data->set.str[STRING_CERT],
file_type) != 1) {
failf(data, "unable to use client certificate (no key or wrong pass"
" phrase?)");
return CURLE_SSL_CONNECT_ERROR;
}
file_type = do_file_type(data->set.str[STRING_KEY_TYPE]);
if(SSL_CTX_use_PrivateKey_file(conssl->ctx, data->set.str[STRING_KEY],
file_type) != 1) {
failf(data, "unable to set private key");
return CURLE_SSL_CONNECT_ERROR;
}
}
#else
if(CyaSSL_no_filesystem_verify(conssl->ctx)!= SSL_SUCCESS) {
return CURLE_SSL_CONNECT_ERROR;
}
#endif
SSL_CTX_set_verify(conssl->ctx,
data->set.ssl.verifypeer?SSL_VERIFY_PEER:SSL_VERIFY_NONE,
NULL);
if(conssl->handle)
SSL_free(conssl->handle);
conssl->handle = SSL_new(conssl->ctx);
if(!conssl->handle) {
failf(data, "SSL: couldn't create a context (handle)!");
return CURLE_OUT_OF_MEMORY;
}
if(!Curl_ssl_getsessionid(conn, &ssl_sessionid, NULL)) {
if(!SSL_set_session(conssl->handle, ssl_sessionid)) {
failf(data, "SSL: SSL_set_session failed: %s",
ERR_error_string(SSL_get_error(conssl->handle, 0),NULL));
return CURLE_SSL_CONNECT_ERROR;
}
infof (data, "SSL re-using session ID\n");
}
if(!SSL_set_fd(conssl->handle, (int)sockfd)) {
failf(data, "SSL: SSL_set_fd failed");
return CURLE_SSL_CONNECT_ERROR;
}
conssl->connecting_state = ssl_connect_2;
return CURLE_OK;
}
static CURLcode
cyassl_connect_step2(struct connectdata *conn,
int sockindex)
{
int ret = -1;
struct SessionHandle *data = conn->data;
struct ssl_connect_data* conssl = &conn->ssl[sockindex];
infof(data, "CyaSSL: Connecting to %s:%d\n",
conn->host.name, conn->remote_port);
conn->recv[sockindex] = cyassl_recv;
conn->send[sockindex] = cyassl_send;
if(data->set.ssl.verifyhost) {
ret = CyaSSL_check_domain_name(conssl->handle, conn->host.name);
if(ret == SSL_FAILURE)
return CURLE_OUT_OF_MEMORY;
}
ret = SSL_connect(conssl->handle);
if(ret != 1) {
char error_buffer[80];
int detail = SSL_get_error(conssl->handle, ret);
if(SSL_ERROR_WANT_READ == detail) {
conssl->connecting_state = ssl_connect_2_reading;
return CURLE_OK;
}
else if(SSL_ERROR_WANT_WRITE == detail) {
conssl->connecting_state = ssl_connect_2_writing;
return CURLE_OK;
}
else if(DOMAIN_NAME_MISMATCH == detail) {
#if 1
failf(data, "\tsubject alt name(s) or common name do not match \"%s\"\n",
conn->host.dispname);
return CURLE_PEER_FAILED_VERIFICATION;
#else
if(data->set.ssl.verifyhost) {
failf(data,
"\tsubject alt name(s) or common name do not match \"%s\"\n",
conn->host.dispname);
return CURLE_PEER_FAILED_VERIFICATION;
}
else {
infof(data,
"\tsubject alt name(s) and/or common name do not match \"%s\"\n",
conn->host.dispname);
return CURLE_OK;
}
#endif
}
else {
failf(data, "SSL_connect failed with error %d: %s", detail,
ERR_error_string(detail, error_buffer));
return CURLE_SSL_CONNECT_ERROR;
}
}
conssl->connecting_state = ssl_connect_3;
infof(data, "SSL connected\n");
return CURLE_OK;
}
static CURLcode
cyassl_connect_step3(struct connectdata *conn,
int sockindex)
{
CURLcode retcode = CURLE_OK;
void *old_ssl_sessionid=NULL;
struct SessionHandle *data = conn->data;
struct ssl_connect_data *connssl = &conn->ssl[sockindex];
int incache;
SSL_SESSION *our_ssl_sessionid;
DEBUGASSERT(ssl_connect_3 == connssl->connecting_state);
our_ssl_sessionid = SSL_get_session(connssl->handle);
incache = !(Curl_ssl_getsessionid(conn, &old_ssl_sessionid, NULL));
if(incache) {
if(old_ssl_sessionid != our_ssl_sessionid) {
infof(data, "old SSL session ID is stale, removing\n");
Curl_ssl_delsessionid(conn, old_ssl_sessionid);
incache = FALSE;
}
}
if(!incache) {
retcode = Curl_ssl_addsessionid(conn, our_ssl_sessionid,
0 );
if(retcode) {
failf(data, "failed to store ssl session");
return retcode;
}
}
connssl->connecting_state = ssl_connect_done;
return retcode;
}
static ssize_t cyassl_send(struct connectdata *conn,
int sockindex,
const void *mem,
size_t len,
CURLcode *curlcode)
{
char error_buffer[80];
int memlen = (len > (size_t)INT_MAX) ? INT_MAX : (int)len;
int rc = SSL_write(conn->ssl[sockindex].handle, mem, memlen);
if(rc < 0) {
int err = SSL_get_error(conn->ssl[sockindex].handle, rc);
switch(err) {
case SSL_ERROR_WANT_READ:
case SSL_ERROR_WANT_WRITE:
*curlcode = CURLE_AGAIN;
return -1;
default:
failf(conn->data, "SSL write: %s, errno %d",
ERR_error_string(err, error_buffer),
SOCKERRNO);
*curlcode = CURLE_SEND_ERROR;
return -1;
}
}
return rc;
}
void Curl_cyassl_close_all(struct SessionHandle *data)
{
(void)data;
}
void Curl_cyassl_close(struct connectdata *conn, int sockindex)
{
struct ssl_connect_data *conssl = &conn->ssl[sockindex];
if(conssl->handle) {
(void)SSL_shutdown(conssl->handle);
SSL_free (conssl->handle);
conssl->handle = NULL;
}
if(conssl->ctx) {
SSL_CTX_free (conssl->ctx);
conssl->ctx = NULL;
}
}
static ssize_t cyassl_recv(struct connectdata *conn,
int num,
char *buf,
size_t buffersize,
CURLcode *curlcode)
{
char error_buffer[80];
int buffsize = (buffersize > (size_t)INT_MAX) ? INT_MAX : (int)buffersize;
int nread = SSL_read(conn->ssl[num].handle, buf, buffsize);
if(nread < 0) {
int err = SSL_get_error(conn->ssl[num].handle, nread);
switch(err) {
case SSL_ERROR_ZERO_RETURN:
break;
case SSL_ERROR_WANT_READ:
case SSL_ERROR_WANT_WRITE:
*curlcode = CURLE_AGAIN;
return -1;
default:
failf(conn->data, "SSL read: %s, errno %d",
ERR_error_string(err, error_buffer),
SOCKERRNO);
*curlcode = CURLE_RECV_ERROR;
return -1;
}
}
return nread;
}
void Curl_cyassl_session_free(void *ptr)
{
(void)ptr;
}
size_t Curl_cyassl_version(char *buffer, size_t size)
{
#ifdef CYASSL_VERSION
return snprintf(buffer, size, "CyaSSL/%s", CYASSL_VERSION);
#else
return snprintf(buffer, size, "CyaSSL/%s", "<1.8.8");
#endif
}
int Curl_cyassl_init(void)
{
if(CyaSSL_Init() == 0)
return 1;
return -1;
}
bool Curl_cyassl_data_pending(const struct connectdata* conn, int connindex)
{
if(conn->ssl[connindex].handle)
return (0 != SSL_pending(conn->ssl[connindex].handle)) ? TRUE : FALSE;
else
return FALSE;
}
int Curl_cyassl_shutdown(struct connectdata *conn, int sockindex)
{
int retval = 0;
struct ssl_connect_data *connssl = &conn->ssl[sockindex];
if(connssl->handle) {
SSL_free (connssl->handle);
connssl->handle = NULL;
}
return retval;
}
static CURLcode
cyassl_connect_common(struct connectdata *conn,
int sockindex,
bool nonblocking,
bool *done)
{
CURLcode retcode;
struct SessionHandle *data = conn->data;
struct ssl_connect_data *connssl = &conn->ssl[sockindex];
curl_socket_t sockfd = conn->sock[sockindex];
long timeout_ms;
int what;
if(ssl_connection_complete == connssl->state) {
*done = TRUE;
return CURLE_OK;
}
if(ssl_connect_1==connssl->connecting_state) {
timeout_ms = Curl_timeleft(data, NULL, TRUE);
if(timeout_ms < 0) {
failf(data, "SSL connection timeout");
return CURLE_OPERATION_TIMEDOUT;
}
retcode = cyassl_connect_step1(conn, sockindex);
if(retcode)
return retcode;
}
while(ssl_connect_2 == connssl->connecting_state ||
ssl_connect_2_reading == connssl->connecting_state ||
ssl_connect_2_writing == connssl->connecting_state) {
timeout_ms = Curl_timeleft(data, NULL, TRUE);
if(timeout_ms < 0) {
failf(data, "SSL connection timeout");
return CURLE_OPERATION_TIMEDOUT;
}
if(connssl->connecting_state == ssl_connect_2_reading
|| connssl->connecting_state == ssl_connect_2_writing) {
curl_socket_t writefd = ssl_connect_2_writing==
connssl->connecting_state?sockfd:CURL_SOCKET_BAD;
curl_socket_t readfd = ssl_connect_2_reading==
connssl->connecting_state?sockfd:CURL_SOCKET_BAD;
what = Curl_socket_ready(readfd, writefd, nonblocking?0:timeout_ms);
if(what < 0) {
failf(data, "select/poll on SSL socket, errno: %d", SOCKERRNO);
return CURLE_SSL_CONNECT_ERROR;
}
else if(0 == what) {
if(nonblocking) {
*done = FALSE;
return CURLE_OK;
}
else {
failf(data, "SSL connection timeout");
return CURLE_OPERATION_TIMEDOUT;
}
}
}
retcode = cyassl_connect_step2(conn, sockindex);
if(retcode || (nonblocking &&
(ssl_connect_2 == connssl->connecting_state ||
ssl_connect_2_reading == connssl->connecting_state ||
ssl_connect_2_writing == connssl->connecting_state)))
return retcode;
}
if(ssl_connect_3==connssl->connecting_state) {
retcode = cyassl_connect_step3(conn, sockindex);
if(retcode)
return retcode;
}
if(ssl_connect_done==connssl->connecting_state) {
connssl->state = ssl_connection_complete;
conn->recv[sockindex] = cyassl_recv;
conn->send[sockindex] = cyassl_send;
*done = TRUE;
}
else
*done = FALSE;
connssl->connecting_state = ssl_connect_1;
return CURLE_OK;
}
CURLcode
Curl_cyassl_connect_nonblocking(struct connectdata *conn,
int sockindex,
bool *done)
{
return cyassl_connect_common(conn, sockindex, TRUE, done);
}
CURLcode
Curl_cyassl_connect(struct connectdata *conn,
int sockindex)
{
CURLcode retcode;
bool done = FALSE;
retcode = cyassl_connect_common(conn, sockindex, FALSE, &done);
if(retcode)
return retcode;
DEBUGASSERT(done);
return CURLE_OK;
}
#endif