+++ /dev/null
-/***************************************************************************
- * _ _ ____ _
- * Project ___| | | | _ \| |
- * / __| | | | |_) | |
- * | (__| |_| | _ <| |___
- * \___|\___/|_| \_\_____|
- *
- * Copyright (C) 2010, DirecTV, Contact: Eric Hu, <ehu@directv.com>.
- * Copyright (C) 2010 - 2018, Daniel Stenberg, <daniel@haxx.se>, et al.
- *
- * This software is licensed as described in the file COPYING, which
- * you should have received as part of this distribution. The terms
- * are also available at https://curl.haxx.se/docs/copyright.html.
- *
- * You may opt to use, copy, modify, merge, publish, distribute and/or sell
- * copies of the Software, and permit persons to whom the Software is
- * furnished to do so, under the terms of the COPYING file.
- *
- * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
- * KIND, either express or implied.
- *
- ***************************************************************************/
-
-/*
- * Source file for all axTLS-specific code for the TLS/SSL layer. No code
- * but vtls.c should ever call or use these functions.
- */
-
-#include "curl_setup.h"
-
-#ifdef USE_AXTLS
-
-#error axTLS support has been disabled in curl due to doubts about quality,
-#error user dedication and a lack of use/testing. We urge users to consider
-#error using a more established TLS backend instead.
-
-#include <axTLS/config.h>
-#include <axTLS/ssl.h>
-#include "axtls.h"
-
-#include "sendf.h"
-#include "inet_pton.h"
-#include "vtls.h"
-#include "parsedate.h"
-#include "connect.h" /* for the connect timeout */
-#include "select.h"
-#include "curl_printf.h"
-#include "hostcheck.h"
-#include <unistd.h>
-
-/* The last #include files should be: */
-#include "curl_memory.h"
-#include "memdebug.h"
-
-struct ssl_backend_data {
- SSL_CTX* ssl_ctx;
- SSL* ssl;
-};
-
-#define BACKEND connssl->backend
-
-static CURLcode map_error_to_curl(int axtls_err)
-{
- switch(axtls_err) {
- case SSL_ERROR_NOT_SUPPORTED:
- case SSL_ERROR_INVALID_VERSION:
- case -70: /* protocol version alert from server */
- return CURLE_UNSUPPORTED_PROTOCOL;
- break;
- case SSL_ERROR_NO_CIPHER:
- return CURLE_SSL_CIPHER;
- break;
- case SSL_ERROR_BAD_CERTIFICATE: /* this may be bad server cert too */
- case SSL_ERROR_NO_CERT_DEFINED:
- case -42: /* bad certificate alert from server */
- case -43: /* unsupported cert alert from server */
- case -44: /* cert revoked alert from server */
- case -45: /* cert expired alert from server */
- case -46: /* cert unknown alert from server */
- return CURLE_SSL_CERTPROBLEM;
- break;
- case SSL_X509_ERROR(X509_NOT_OK):
- case SSL_X509_ERROR(X509_VFY_ERROR_NO_TRUSTED_CERT):
- case SSL_X509_ERROR(X509_VFY_ERROR_BAD_SIGNATURE):
- case SSL_X509_ERROR(X509_VFY_ERROR_NOT_YET_VALID):
- case SSL_X509_ERROR(X509_VFY_ERROR_EXPIRED):
- case SSL_X509_ERROR(X509_VFY_ERROR_SELF_SIGNED):
- case SSL_X509_ERROR(X509_VFY_ERROR_INVALID_CHAIN):
- case SSL_X509_ERROR(X509_VFY_ERROR_UNSUPPORTED_DIGEST):
- case SSL_X509_ERROR(X509_INVALID_PRIV_KEY):
- return CURLE_PEER_FAILED_VERIFICATION;
- break;
- case -48: /* unknown ca alert from server */
- return CURLE_SSL_CACERT;
- break;
- case -49: /* access denied alert from server */
- return CURLE_REMOTE_ACCESS_DENIED;
- break;
- case SSL_ERROR_CONN_LOST:
- case SSL_ERROR_SOCK_SETUP_FAILURE:
- case SSL_ERROR_INVALID_HANDSHAKE:
- case SSL_ERROR_INVALID_PROT_MSG:
- case SSL_ERROR_INVALID_HMAC:
- case SSL_ERROR_INVALID_SESSION:
- case SSL_ERROR_INVALID_KEY: /* it's too bad this doesn't map better */
- case SSL_ERROR_FINISHED_INVALID:
- case SSL_ERROR_NO_CLIENT_RENOG:
- default:
- return CURLE_SSL_CONNECT_ERROR;
- break;
- }
-}
-
-static Curl_recv axtls_recv;
-static Curl_send axtls_send;
-
-static void free_ssl_structs(struct ssl_connect_data *connssl)
-{
- if(BACKEND->ssl) {
- ssl_free(BACKEND->ssl);
- BACKEND->ssl = NULL;
- }
- if(BACKEND->ssl_ctx) {
- ssl_ctx_free(BACKEND->ssl_ctx);
- BACKEND->ssl_ctx = NULL;
- }
-}
-
-/*
- * For both blocking and non-blocking connects, this function sets up the
- * ssl context and state. This function is called after the TCP connect
- * has completed.
- */
-static CURLcode connect_prep(struct connectdata *conn, int sockindex)
-{
- struct ssl_connect_data *connssl = &conn->ssl[sockindex];
- struct Curl_easy *data = conn->data;
- SSL_CTX *ssl_ctx;
- SSL *ssl = NULL;
- int cert_types[] = {SSL_OBJ_X509_CERT, SSL_OBJ_PKCS12, 0};
- int key_types[] = {SSL_OBJ_RSA_KEY, SSL_OBJ_PKCS8, SSL_OBJ_PKCS12, 0};
- int i, ssl_fcn_return;
-
- /* Assuming users will not compile in custom key/cert to axTLS.
- * Also, even for blocking connects, use axTLS non-blocking feature.
- */
- uint32_t client_option = SSL_NO_DEFAULT_KEY |
- SSL_SERVER_VERIFY_LATER |
- SSL_CONNECT_IN_PARTS;
-
- if(connssl->state == ssl_connection_complete)
- /* to make us tolerant against being called more than once for the
- same connection */
- return CURLE_OK;
-
- if(SSL_CONN_CONFIG(version_max) != CURL_SSLVERSION_MAX_NONE) {
- failf(data, "axtls does not support CURL_SSLVERSION_MAX");
- return CURLE_SSL_CONNECT_ERROR;
- }
-
-
- /* axTLS only supports TLSv1 */
- /* check to see if we've been told to use an explicit SSL/TLS version */
- switch(SSL_CONN_CONFIG(version)) {
- case CURL_SSLVERSION_DEFAULT:
- case CURL_SSLVERSION_TLSv1:
- break;
- default:
- failf(data, "axTLS only supports TLS 1.0 and 1.1, "
- "and it cannot be specified which one to use");
- return CURLE_SSL_CONNECT_ERROR;
- }
-
-#ifdef AXTLSDEBUG
- client_option |= SSL_DISPLAY_STATES | SSL_DISPLAY_RSA | SSL_DISPLAY_CERTS;
-#endif /* AXTLSDEBUG */
-
- /* Allocate an SSL_CTX struct */
- ssl_ctx = ssl_ctx_new(client_option, SSL_DEFAULT_CLNT_SESS);
- if(ssl_ctx == NULL) {
- failf(data, "unable to create client SSL context");
- return CURLE_SSL_CONNECT_ERROR;
- }
-
- BACKEND->ssl_ctx = ssl_ctx;
- BACKEND->ssl = NULL;
-
- /* Load the trusted CA cert bundle file */
- if(SSL_CONN_CONFIG(CAfile)) {
- if(ssl_obj_load(ssl_ctx, SSL_OBJ_X509_CACERT,
- SSL_CONN_CONFIG(CAfile), NULL) != SSL_OK) {
- infof(data, "error reading ca cert file %s \n",
- SSL_CONN_CONFIG(CAfile));
- if(SSL_CONN_CONFIG(verifypeer)) {
- return CURLE_SSL_CACERT_BADFILE;
- }
- }
- else
- infof(data, "found certificates in %s\n", SSL_CONN_CONFIG(CAfile));
- }
-
- /* gtls.c tasks we're skipping for now:
- * 1) certificate revocation list checking
- * 2) dns name assignment to host
- * 3) set protocol priority. axTLS is TLSv1 only, so can probably ignore
- * 4) set certificate priority. axTLS ignores type and sends certs in
- * order added. can probably ignore this.
- */
-
- /* Load client certificate */
- if(SSL_SET_OPTION(cert)) {
- i = 0;
- /* Instead of trying to analyze cert type here, let axTLS try them all. */
- while(cert_types[i] != 0) {
- ssl_fcn_return = ssl_obj_load(ssl_ctx, cert_types[i],
- SSL_SET_OPTION(cert), NULL);
- if(ssl_fcn_return == SSL_OK) {
- infof(data, "successfully read cert file %s \n",
- SSL_SET_OPTION(cert));
- break;
- }
- i++;
- }
- /* Tried all cert types, none worked. */
- if(cert_types[i] == 0) {
- failf(data, "%s is not x509 or pkcs12 format",
- SSL_SET_OPTION(cert));
- return CURLE_SSL_CERTPROBLEM;
- }
- }
-
- /* Load client key.
- If a pkcs12 file successfully loaded a cert, then there's nothing to do
- because the key has already been loaded. */
- if(SSL_SET_OPTION(key) && cert_types[i] != SSL_OBJ_PKCS12) {
- i = 0;
- /* Instead of trying to analyze key type here, let axTLS try them all. */
- while(key_types[i] != 0) {
- ssl_fcn_return = ssl_obj_load(ssl_ctx, key_types[i],
- SSL_SET_OPTION(key), NULL);
- if(ssl_fcn_return == SSL_OK) {
- infof(data, "successfully read key file %s \n",
- SSL_SET_OPTION(key));
- break;
- }
- i++;
- }
- /* Tried all key types, none worked. */
- if(key_types[i] == 0) {
- failf(data, "Failure: %s is not a supported key file",
- SSL_SET_OPTION(key));
- return CURLE_SSL_CONNECT_ERROR;
- }
- }
-
- /* gtls.c does more here that is being left out for now
- * 1) set session credentials. can probably ignore since axtls puts this
- * info in the ssl_ctx struct
- * 2) setting up callbacks. these seem gnutls specific
- */
-
- if(SSL_SET_OPTION(primary.sessionid)) {
- const uint8_t *ssl_sessionid;
- size_t ssl_idsize;
-
- /* In axTLS, handshaking happens inside ssl_client_new. */
- Curl_ssl_sessionid_lock(conn);
- if(!Curl_ssl_getsessionid(conn, (void **) &ssl_sessionid, &ssl_idsize,
- sockindex)) {
- /* we got a session id, use it! */
- infof(data, "SSL re-using session ID\n");
- ssl = ssl_client_new(ssl_ctx, conn->sock[sockindex],
- ssl_sessionid, (uint8_t)ssl_idsize, NULL);
- }
- Curl_ssl_sessionid_unlock(conn);
- }
-
- if(!ssl)
- ssl = ssl_client_new(ssl_ctx, conn->sock[sockindex], NULL, 0, NULL);
-
- BACKEND->ssl = ssl;
- return CURLE_OK;
-}
-
-static void Curl_axtls_close(struct connectdata *conn, int sockindex)
-{
- struct ssl_connect_data *connssl = &conn->ssl[sockindex];
-
- infof(conn->data, " Curl_axtls_close\n");
-
- /* line from openssl.c: (void)SSL_shutdown(BACKEND->ssl);
- axTLS compat layer does nothing for SSL_shutdown */
-
- /* The following line is from openssl.c. There seems to be no axTLS
- equivalent. ssl_free and ssl_ctx_free close things.
- SSL_set_connect_state(connssl->handle); */
-
- free_ssl_structs(connssl);
-}
-
-/*
- * For both blocking and non-blocking connects, this function finalizes the
- * SSL connection.
- */
-static CURLcode connect_finish(struct connectdata *conn, int sockindex)
-{
- struct Curl_easy *data = conn->data;
- struct ssl_connect_data *connssl = &conn->ssl[sockindex];
- SSL *ssl = BACKEND->ssl;
- const char *peer_CN;
- uint32_t dns_altname_index;
- const char *dns_altname;
- int8_t found_subject_alt_names = 0;
- int8_t found_subject_alt_name_matching_conn = 0;
- const char * const hostname = SSL_IS_PROXY() ? conn->http_proxy.host.name :
- conn->host.name;
- const char * const dispname = SSL_IS_PROXY() ?
- conn->http_proxy.host.dispname : conn->host.dispname;
-
- /* Here, gtls.c gets the peer certificates and fails out depending on
- * settings in "data." axTLS api doesn't have get cert chain fcn, so omit?
- */
-
- /* Verify server's certificate */
- if(SSL_CONN_CONFIG(verifypeer)) {
- if(ssl_verify_cert(ssl) != SSL_OK) {
- Curl_axtls_close(conn, sockindex);
- failf(data, "server cert verify failed");
- return CURLE_PEER_FAILED_VERIFICATION;
- }
- }
- else
- infof(data, "\t server certificate verification SKIPPED\n");
-
- /* Here, gtls.c does issuer verification. axTLS has no straightforward
- * equivalent, so omitting for now.*/
-
- /* Here, gtls.c does the following
- * 1) x509 hostname checking per RFC2818. axTLS doesn't support this, but
- * it seems useful. This is now implemented, by Oscar Koeroo
- * 2) checks cert validity based on time. axTLS does this in ssl_verify_cert
- * 3) displays a bunch of cert information. axTLS doesn't support most of
- * this, but a couple fields are available.
- */
-
- /* There is no (DNS) Altnames count in the version 1.4.8 API. There is a
- risk of an inifite loop */
- for(dns_altname_index = 0; ; dns_altname_index++) {
- dns_altname = ssl_get_cert_subject_alt_dnsname(ssl, dns_altname_index);
- if(dns_altname == NULL) {
- break;
- }
- found_subject_alt_names = 1;
-
- infof(data, "\tComparing subject alt name DNS with hostname: %s <-> %s\n",
- dns_altname, hostname);
- if(Curl_cert_hostcheck(dns_altname, hostname)) {
- found_subject_alt_name_matching_conn = 1;
- break;
- }
- }
-
- /* RFC2818 checks */
- if(found_subject_alt_names && !found_subject_alt_name_matching_conn) {
- if(SSL_CONN_CONFIG(verifyhost)) {
- /* Break connection ! */
- Curl_axtls_close(conn, sockindex);
- failf(data, "\tsubjectAltName(s) do not match %s\n", dispname);
- return CURLE_PEER_FAILED_VERIFICATION;
- }
- else
- infof(data, "\tsubjectAltName(s) do not match %s\n", dispname);
- }
- else if(found_subject_alt_names == 0) {
- /* Per RFC2818, when no Subject Alt Names were available, examine the peer
- CN as a legacy fallback */
- peer_CN = ssl_get_cert_dn(ssl, SSL_X509_CERT_COMMON_NAME);
- if(peer_CN == NULL) {
- if(SSL_CONN_CONFIG(verifyhost)) {
- Curl_axtls_close(conn, sockindex);
- failf(data, "unable to obtain common name from peer certificate");
- return CURLE_PEER_FAILED_VERIFICATION;
- }
- else
- infof(data, "unable to obtain common name from peer certificate");
- }
- else {
- if(!Curl_cert_hostcheck((const char *)peer_CN, hostname)) {
- if(SSL_CONN_CONFIG(verifyhost)) {
- /* Break connection ! */
- Curl_axtls_close(conn, sockindex);
- failf(data, "\tcommon name \"%s\" does not match \"%s\"\n",
- peer_CN, dispname);
- return CURLE_PEER_FAILED_VERIFICATION;
- }
- else
- infof(data, "\tcommon name \"%s\" does not match \"%s\"\n",
- peer_CN, dispname);
- }
- }
- }
-
- /* General housekeeping */
- connssl->state = ssl_connection_complete;
- conn->recv[sockindex] = axtls_recv;
- conn->send[sockindex] = axtls_send;
-
- /* Put our freshly minted SSL session in cache */
- if(SSL_SET_OPTION(primary.sessionid)) {
- const uint8_t *ssl_sessionid = ssl_get_session_id(ssl);
- size_t ssl_idsize = ssl_get_session_id_size(ssl);
- Curl_ssl_sessionid_lock(conn);
- if(Curl_ssl_addsessionid(conn, (void *) ssl_sessionid, ssl_idsize,
- sockindex) != CURLE_OK)
- infof(data, "failed to add session to cache\n");
- Curl_ssl_sessionid_unlock(conn);
- }
-
- return CURLE_OK;
-}
-
-/*
- * Use axTLS's non-blocking connection feature to open an SSL connection.
- * This is called after a TCP connection is already established.
- */
-static CURLcode Curl_axtls_connect_nonblocking(struct connectdata *conn,
- int sockindex, bool *done)
-{
- struct ssl_connect_data *connssl = &conn->ssl[sockindex];
- CURLcode conn_step;
- int ssl_fcn_return;
- int i;
-
- *done = FALSE;
- /* connectdata is calloc'd and connecting_state is only changed in this
- function, so this is safe, as the state is effectively initialized. */
- if(connssl->connecting_state == ssl_connect_1) {
- conn_step = connect_prep(conn, sockindex);
- if(conn_step != CURLE_OK) {
- Curl_axtls_close(conn, sockindex);
- return conn_step;
- }
- connssl->connecting_state = ssl_connect_2;
- }
-
- if(connssl->connecting_state == ssl_connect_2) {
- /* Check to make sure handshake was ok. */
- if(ssl_handshake_status(BACKEND->ssl) != SSL_OK) {
- /* Loop to perform more work in between sleeps. This is work around the
- fact that axtls does not expose any knowledge about when work needs
- to be performed. This can save ~25% of time on SSL handshakes. */
- for(i = 0; i<5; i++) {
- ssl_fcn_return = ssl_read(BACKEND->ssl, NULL);
- if(ssl_fcn_return < 0) {
- Curl_axtls_close(conn, sockindex);
- ssl_display_error(ssl_fcn_return); /* goes to stdout. */
- return map_error_to_curl(ssl_fcn_return);
- }
- return CURLE_OK;
- }
- }
- infof(conn->data, "handshake completed successfully\n");
- connssl->connecting_state = ssl_connect_3;
- }
-
- if(connssl->connecting_state == ssl_connect_3) {
- conn_step = connect_finish(conn, sockindex);
- if(conn_step != CURLE_OK) {
- Curl_axtls_close(conn, sockindex);
- return conn_step;
- }
-
- /* Reset connect state */
- connssl->connecting_state = ssl_connect_1;
-
- *done = TRUE;
- return CURLE_OK;
- }
-
- /* Unrecognized state. Things are very bad. */
- connssl->state = ssl_connection_none;
- connssl->connecting_state = ssl_connect_1;
- /* Return value perhaps not strictly correct, but distinguishes the issue.*/
- return CURLE_BAD_FUNCTION_ARGUMENT;
-}
-
-
-/*
- * This function is called after the TCP connect has completed. Setup the TLS
- * layer and do all necessary magic for a blocking connect.
- */
-static CURLcode Curl_axtls_connect(struct connectdata *conn, int sockindex)
-{
- struct Curl_easy *data = conn->data;
- CURLcode conn_step = connect_prep(conn, sockindex);
- int ssl_fcn_return;
- struct ssl_connect_data *connssl = &conn->ssl[sockindex];
- SSL *ssl = BACKEND->ssl;
- long timeout_ms;
-
- if(conn_step != CURLE_OK) {
- Curl_axtls_close(conn, sockindex);
- return conn_step;
- }
-
- /* Check to make sure handshake was ok. */
- while(ssl_handshake_status(ssl) != SSL_OK) {
- /* check allowed time left */
- timeout_ms = Curl_timeleft(data, NULL, TRUE);
-
- if(timeout_ms < 0) {
- /* no need to continue if time already is up */
- failf(data, "SSL connection timeout");
- return CURLE_OPERATION_TIMEDOUT;
- }
-
- ssl_fcn_return = ssl_read(ssl, NULL);
- if(ssl_fcn_return < 0) {
- Curl_axtls_close(conn, sockindex);
- ssl_display_error(ssl_fcn_return); /* goes to stdout. */
- return map_error_to_curl(ssl_fcn_return);
- }
- /* TODO: avoid polling */
- Curl_wait_ms(10);
- }
- infof(conn->data, "handshake completed successfully\n");
-
- conn_step = connect_finish(conn, sockindex);
- if(conn_step != CURLE_OK) {
- Curl_axtls_close(conn, sockindex);
- return conn_step;
- }
-
- return CURLE_OK;
-}
-
-/* return number of sent (non-SSL) bytes */
-static ssize_t axtls_send(struct connectdata *conn,
- int sockindex,
- const void *mem,
- size_t len,
- CURLcode *err)
-{
- struct ssl_connect_data *connssl = &conn->ssl[sockindex];
- /* ssl_write() returns 'int' while write() and send() returns 'size_t' */
- int rc = ssl_write(BACKEND->ssl, mem, (int)len);
-
- infof(conn->data, " axtls_send\n");
-
- if(rc < 0) {
- *err = map_error_to_curl(rc);
- rc = -1; /* generic error code for send failure */
- }
-
- *err = CURLE_OK;
- return rc;
-}
-
-/*
- * This function is called to shut down the SSL layer but keep the
- * socket open (CCC - Clear Command Channel)
- */
-static int Curl_axtls_shutdown(struct connectdata *conn, int sockindex)
-{
- /* Outline taken from openssl.c since functions are in axTLS compat layer.
- axTLS's error set is much smaller, so a lot of error-handling was removed.
- */
- int retval = 0;
- struct ssl_connect_data *connssl = &conn->ssl[sockindex];
- struct Curl_easy *data = conn->data;
- uint8_t *buf;
- ssize_t nread;
-
- infof(conn->data, " Curl_axtls_shutdown\n");
-
- /* This has only been tested on the proftpd server, and the mod_tls code
- sends a close notify alert without waiting for a close notify alert in
- response. Thus we wait for a close notify alert from the server, but
- we do not send one. Let's hope other servers do the same... */
-
- /* axTLS compat layer does nothing for SSL_shutdown, so we do nothing too
- if(data->set.ftp_ccc == CURLFTPSSL_CCC_ACTIVE)
- (void)SSL_shutdown(BACKEND->ssl);
- */
-
- if(BACKEND->ssl) {
- int what = SOCKET_READABLE(conn->sock[sockindex], SSL_SHUTDOWN_TIMEOUT);
- if(what > 0) {
- /* Something to read, let's do it and hope that it is the close
- notify alert from the server. buf is managed internally by
- axTLS and will be released upon calling ssl_free via
- free_ssl_structs. */
- nread = (ssize_t)ssl_read(BACKEND->ssl, &buf);
-
- if(nread < SSL_OK) {
- failf(data, "close notify alert not received during shutdown");
- retval = -1;
- }
- }
- else if(0 == what) {
- /* timeout */
- failf(data, "SSL shutdown timeout");
- }
- else {
- /* anything that gets here is fatally bad */
- failf(data, "select/poll on SSL socket, errno: %d", SOCKERRNO);
- retval = -1;
- }
-
- free_ssl_structs(connssl);
- }
- return retval;
-}
-
-static ssize_t axtls_recv(struct connectdata *conn, /* connection data */
- int num, /* socketindex */
- char *buf, /* store read data here */
- size_t buffersize, /* max amount to read */
- CURLcode *err)
-{
- struct ssl_connect_data *connssl = &conn->ssl[num];
- ssize_t ret = 0;
- uint8_t *read_buf;
-
- infof(conn->data, " axtls_recv\n");
-
- *err = CURLE_OK;
- if(connssl) {
- ret = ssl_read(BACKEND->ssl, &read_buf);
- if(ret > SSL_OK) {
- /* ssl_read returns SSL_OK if there is more data to read, so if it is
- larger, then all data has been read already. */
- memcpy(buf, read_buf,
- (size_t)ret > buffersize ? buffersize : (size_t)ret);
- }
- else if(ret == SSL_OK) {
- /* more data to be read, signal caller to call again */
- *err = CURLE_AGAIN;
- ret = -1;
- }
- else if(ret == -3) {
- /* With patched axTLS, SSL_CLOSE_NOTIFY=-3. Hard-coding until axTLS
- team approves proposed fix. */
- Curl_axtls_close(conn, num);
- }
- else {
- failf(conn->data, "axTLS recv error (%d)", ret);
- *err = map_error_to_curl((int) ret);
- ret = -1;
- }
- }
-
- return ret;
-}
-
-/*
- * Return codes:
- * 1 means the connection is still in place
- * 0 means the connection has been closed
- * -1 means the connection status is unknown
- */
-static int Curl_axtls_check_cxn(struct connectdata *conn)
-{
- /* openssl.c line:
- rc = SSL_peek(conn->ssl[FIRSTSOCKET].backend->ssl, (void*)&buf, 1);
- axTLS compat layer always returns the last argument, so connection is
- always alive? */
-
- infof(conn->data, " Curl_axtls_check_cxn\n");
- return 1; /* connection still in place */
-}
-
-static void Curl_axtls_session_free(void *ptr)
-{
- (void)ptr;
- /* free the ID */
- /* both openssl.c and gtls.c do something here, but axTLS's OpenSSL
- compatibility layer does nothing, so we do nothing too. */
-}
-
-static size_t Curl_axtls_version(char *buffer, size_t size)
-{
- return snprintf(buffer, size, "axTLS/%s", ssl_version());
-}
-
-static CURLcode Curl_axtls_random(struct Curl_easy *data,
- unsigned char *entropy, size_t length)
-{
- static bool ssl_seeded = FALSE;
- (void)data;
- if(!ssl_seeded) {
- ssl_seeded = TRUE;
- /* Initialize the seed if not already done. This call is not exactly thread
- * safe (and neither is the ssl_seeded check), but the worst effect of a
- * race condition is that some global resources will leak. */
- RNG_initialize();
- }
- get_random((int)length, entropy);
- return CURLE_OK;
-}
-
-static void *Curl_axtls_get_internals(struct ssl_connect_data *connssl,
- CURLINFO info UNUSED_PARAM)
-{
- (void)info;
- return BACKEND->ssl;
-}
-
-const struct Curl_ssl Curl_ssl_axtls = {
- { CURLSSLBACKEND_AXTLS, "axtls" }, /* info */
- 0, /* no fancy stuff */
- sizeof(struct ssl_backend_data),
-
- /*
- * axTLS has no global init. Everything is done through SSL and SSL_CTX
- * structs stored in connectdata structure.
- */
- Curl_none_init, /* init */
- /* axTLS has no global cleanup. */
- Curl_none_cleanup, /* cleanup */
- Curl_axtls_version, /* version */
- Curl_axtls_check_cxn, /* check_cxn */
- Curl_axtls_shutdown, /* shutdown */
- Curl_none_data_pending, /* data_pending */
- Curl_axtls_random, /* random */
- Curl_none_cert_status_request, /* cert_status_request */
- Curl_axtls_connect, /* connect */
- Curl_axtls_connect_nonblocking, /* connect_nonblocking */
- Curl_axtls_get_internals, /* get_internals */
- Curl_axtls_close, /* close_one */
- Curl_none_close_all, /* close_all */
- Curl_axtls_session_free, /* session_free */
- Curl_none_set_engine, /* set_engine */
- Curl_none_set_engine_default, /* set_engine_default */
- Curl_none_engines_list, /* engines_list */
- Curl_none_false_start, /* false_start */
- Curl_none_md5sum, /* md5sum */
- NULL /* sha256sum */
-};
-
-#endif /* USE_AXTLS */
projects / curl / commitdiff