diff options
Diffstat (limited to 'external/libcurl_android/jni/libcurl/lib/vtls/axtls.c')
| -rwxr-xr-x | external/libcurl_android/jni/libcurl/lib/vtls/axtls.c | 684 |
1 files changed, 0 insertions, 684 deletions
diff --git a/external/libcurl_android/jni/libcurl/lib/vtls/axtls.c b/external/libcurl_android/jni/libcurl/lib/vtls/axtls.c deleted file mode 100755 index 1b577b15..00000000 --- a/external/libcurl_android/jni/libcurl/lib/vtls/axtls.c +++ /dev/null @@ -1,684 +0,0 @@ -/*************************************************************************** - * _ _ ____ _ - * Project ___| | | | _ \| | - * / __| | | | |_) | | - * | (__| |_| | _ <| |___ - * \___|\___/|_| \_\_____| - * - * Copyright (C) 2010, DirecTV, Contact: Eric Hu, <ehu@directv.com>. - * Copyright (C) 2010 - 2014, 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 http://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 -#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" -#define _MPRINTF_REPLACE /* use our functions only */ -#include <curl/mprintf.h> -#include "curl_memory.h" -#include <unistd.h> -/* The last #include file should be: */ -#include "memdebug.h" -#include "hostcheck.h" - - -/* Global axTLS init, called from Curl_ssl_init() */ -int Curl_axtls_init(void) -{ -/* axTLS has no global init. Everything is done through SSL and SSL_CTX - * structs stored in connectdata structure. Perhaps can move to axtls.h. - */ - return 1; -} - -int Curl_axtls_cleanup(void) -{ - /* axTLS has no global cleanup. Perhaps can move this to axtls.h. */ - return 1; -} - -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(connssl->ssl) { - ssl_free (connssl->ssl); - connssl->ssl = NULL; - } - if(connssl->ssl_ctx) { - ssl_ctx_free(connssl->ssl_ctx); - connssl->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 SessionHandle *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; - const uint8_t *ssl_sessionid; - size_t ssl_idsize; - - /* 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(conn->ssl[sockindex].state == ssl_connection_complete) - /* to make us tolerant against being called more than once for the - same connection */ - return CURLE_OK; - - /* axTLS only supports TLSv1 */ - /* check to see if we've been told to use an explicit SSL/TLS version */ - switch(data->set.ssl.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; - } - - conn->ssl[sockindex].ssl_ctx = ssl_ctx; - conn->ssl[sockindex].ssl = NULL; - - /* Load the trusted CA cert bundle file */ - if(data->set.ssl.CAfile) { - if(ssl_obj_load(ssl_ctx, SSL_OBJ_X509_CACERT, data->set.ssl.CAfile, NULL) - != SSL_OK) { - infof(data, "error reading ca cert file %s \n", - data->set.ssl.CAfile); - if(data->set.ssl.verifypeer) { - return CURLE_SSL_CACERT_BADFILE; - } - } - else - infof(data, "found certificates in %s\n", data->set.ssl.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(data->set.str[STRING_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], - data->set.str[STRING_CERT], NULL); - if(ssl_fcn_return == SSL_OK) { - infof(data, "successfully read cert file %s \n", - data->set.str[STRING_CERT]); - break; - } - i++; - } - /* Tried all cert types, none worked. */ - if(cert_types[i] == 0) { - failf(data, "%s is not x509 or pkcs12 format", - data->set.str[STRING_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(data->set.str[STRING_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], - data->set.str[STRING_KEY], NULL); - if(ssl_fcn_return == SSL_OK) { - infof(data, "successfully read key file %s \n", - data->set.str[STRING_KEY]); - break; - } - i++; - } - /* Tried all key types, none worked. */ - if(key_types[i] == 0) { - failf(data, "Failure: %s is not a supported key file", - data->set.str[STRING_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 - */ - - /* In axTLS, handshaking happens inside ssl_client_new. */ - if(!Curl_ssl_getsessionid(conn, (void **) &ssl_sessionid, &ssl_idsize)) { - /* 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); - } - else - ssl = ssl_client_new(ssl_ctx, conn->sock[sockindex], NULL, 0); - - conn->ssl[sockindex].ssl = ssl; - return CURLE_OK; -} - -/* - * For both blocking and non-blocking connects, this function finalizes the - * SSL connection. - */ -static CURLcode connect_finish(struct connectdata *conn, int sockindex) -{ - struct SessionHandle *data = conn->data; - SSL *ssl = conn->ssl[sockindex].ssl; - const uint8_t *ssl_sessionid; - size_t ssl_idsize; - 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; - - /* 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(data->set.ssl.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, conn->host.name); - if(Curl_cert_hostcheck(dns_altname, conn->host.name)) { - found_subject_alt_name_matching_conn = 1; - break; - } - } - - /* RFC2818 checks */ - if(found_subject_alt_names && !found_subject_alt_name_matching_conn) { - if(data->set.ssl.verifyhost) { - /* Break connection ! */ - Curl_axtls_close(conn, sockindex); - failf(data, "\tsubjectAltName(s) do not match %s\n", - conn->host.dispname); - return CURLE_PEER_FAILED_VERIFICATION; - } - else - infof(data, "\tsubjectAltName(s) do not match %s\n", - conn->host.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(data->set.ssl.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, conn->host.name)) { - if(data->set.ssl.verifyhost) { - /* Break connection ! */ - Curl_axtls_close(conn, sockindex); - failf(data, "\tcommon name \"%s\" does not match \"%s\"\n", - peer_CN, conn->host.dispname); - return CURLE_PEER_FAILED_VERIFICATION; - } - else - infof(data, "\tcommon name \"%s\" does not match \"%s\"\n", - peer_CN, conn->host.dispname); - } - } - } - - /* General housekeeping */ - conn->ssl[sockindex].state = ssl_connection_complete; - conn->recv[sockindex] = axtls_recv; - conn->send[sockindex] = axtls_send; - - /* Put our freshly minted SSL session in cache */ - ssl_idsize = ssl_get_session_id_size(ssl); - ssl_sessionid = ssl_get_session_id(ssl); - if(Curl_ssl_addsessionid(conn, (void *) ssl_sessionid, ssl_idsize) - != CURLE_OK) - infof (data, "failed to add session to cache\n"); - - 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. - */ -CURLcode Curl_axtls_connect_nonblocking( - struct connectdata *conn, - int sockindex, - bool *done) -{ - 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(conn->ssl[sockindex].connecting_state == ssl_connect_1) { - conn_step = connect_prep(conn, sockindex); - if(conn_step != CURLE_OK) { - Curl_axtls_close(conn, sockindex); - return conn_step; - } - conn->ssl[sockindex].connecting_state = ssl_connect_2; - } - - if(conn->ssl[sockindex].connecting_state == ssl_connect_2) { - /* Check to make sure handshake was ok. */ - if(ssl_handshake_status(conn->ssl[sockindex].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(conn->ssl[sockindex].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"); - conn->ssl[sockindex].connecting_state = ssl_connect_3; - } - - if(conn->ssl[sockindex].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 */ - conn->ssl[sockindex].connecting_state = ssl_connect_1; - - *done = TRUE; - return CURLE_OK; - } - - /* Unrecognized state. Things are very bad. */ - conn->ssl[sockindex].state = ssl_connection_none; - conn->ssl[sockindex].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. - */ -CURLcode -Curl_axtls_connect(struct connectdata *conn, - int sockindex) - -{ - CURLcode conn_step = connect_prep(conn, sockindex); - int ssl_fcn_return; - SSL *ssl = conn->ssl[sockindex].ssl; - - 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) { - 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); - } - usleep(10000); - /* TODO: check for timeout as this could hang indefinitely otherwise */ - } - 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) -{ - /* ssl_write() returns 'int' while write() and send() returns 'size_t' */ - int rc = ssl_write(conn->ssl[sockindex].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; -} - -void Curl_axtls_close_all(struct SessionHandle *data) -{ - (void)data; - infof(data, " Curl_axtls_close_all\n"); -} - -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(connssl->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); -} - -/* - * This function is called to shut down the SSL layer but keep the - * socket open (CCC - Clear Command Channel) - */ -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 SessionHandle *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(connssl->ssl); - */ - - if(connssl->ssl) { - int what = Curl_socket_ready(conn->sock[sockindex], - CURL_SOCKET_BAD, 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(connssl->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(connssl->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 - */ -int Curl_axtls_check_cxn(struct connectdata *conn) -{ - /* openssl.c line: rc = SSL_peek(conn->ssl[FIRSTSOCKET].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 */ -} - -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. */ -} - -size_t Curl_axtls_version(char *buffer, size_t size) -{ - return snprintf(buffer, size, "axTLS/%s", ssl_version()); -} - -int Curl_axtls_random(struct SessionHandle *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(length, entropy); - return 0; -} - -#endif /* USE_AXTLS */ |