+++ /dev/null
-/*
- * SSL/TLS interface functions for NSS
- * Copyright (c) 2009, Jouni Malinen <j@w1.fi>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * Alternatively, this software may be distributed under the terms of BSD
- * license.
- *
- * See README and COPYING for more details.
- */
-
-#include "includes.h"
-#include <nspr/prtypes.h>
-#include <nspr/plarenas.h>
-#include <nspr/plhash.h>
-#include <nspr/prio.h>
-#include <nspr/prclist.h>
-#include <nspr/prlock.h>
-#include <nspr/prinit.h>
-#include <nspr/prerror.h>
-#include <nspr/prmem.h>
-#include <nss/nss.h>
-#include <nss/nssilckt.h>
-#include <nss/ssl.h>
-#include <nss/pk11func.h>
-#include <nss/secerr.h>
-
-#include "common.h"
-#include "tls.h"
-
-static int tls_nss_ref_count = 0;
-
-static PRDescIdentity nss_layer_id;
-
-
-struct tls_connection {
- PRFileDesc *fd;
-
- int established;
- int verify_peer;
- u8 *push_buf, *pull_buf, *pull_buf_offset;
- size_t push_buf_len, pull_buf_len;
-};
-
-
-static PRStatus nss_io_close(PRFileDesc *fd)
-{
- wpa_printf(MSG_DEBUG, "NSS: I/O close");
- return PR_SUCCESS;
-}
-
-
-static PRInt32 nss_io_read(PRFileDesc *fd, void *buf, PRInt32 amount)
-{
- wpa_printf(MSG_DEBUG, "NSS: I/O read(%d)", amount);
- return PR_FAILURE;
-}
-
-
-static PRInt32 nss_io_write(PRFileDesc *fd, const void *buf, PRInt32 amount)
-{
- wpa_printf(MSG_DEBUG, "NSS: I/O write(%d)", amount);
- return PR_FAILURE;
-}
-
-
-static PRInt32 nss_io_writev(PRFileDesc *fd, const PRIOVec *iov,
- PRInt32 iov_size, PRIntervalTime timeout)
-{
- wpa_printf(MSG_DEBUG, "NSS: I/O writev(%d)", iov_size);
- return PR_FAILURE;
-}
-
-
-static PRInt32 nss_io_recv(PRFileDesc *fd, void *buf, PRInt32 amount,
- PRIntn flags, PRIntervalTime timeout)
-{
- struct tls_connection *conn = (struct tls_connection *) fd->secret;
- u8 *end;
-
- wpa_printf(MSG_DEBUG, "NSS: I/O recv(%d)", amount);
-
- if (conn->pull_buf == NULL) {
- wpa_printf(MSG_DEBUG, "NSS: No data available to be read yet");
- return PR_FAILURE;
- }
-
- end = conn->pull_buf + conn->pull_buf_len;
- if (end - conn->pull_buf_offset < amount)
- amount = end - conn->pull_buf_offset;
- os_memcpy(buf, conn->pull_buf_offset, amount);
- conn->pull_buf_offset += amount;
- if (conn->pull_buf_offset == end) {
- wpa_printf(MSG_DEBUG, "%s - pull_buf consumed", __func__);
- os_free(conn->pull_buf);
- conn->pull_buf = conn->pull_buf_offset = NULL;
- conn->pull_buf_len = 0;
- } else {
- wpa_printf(MSG_DEBUG, "%s - %lu bytes remaining in pull_buf",
- __func__,
- (unsigned long) (end - conn->pull_buf_offset));
- }
- return amount;
-}
-
-
-static PRInt32 nss_io_send(PRFileDesc *fd, const void *buf, PRInt32 amount,
- PRIntn flags, PRIntervalTime timeout)
-{
- struct tls_connection *conn = (struct tls_connection *) fd->secret;
- u8 *nbuf;
-
- wpa_printf(MSG_DEBUG, "NSS: I/O %s", __func__);
- wpa_hexdump(MSG_MSGDUMP, "NSS: I/O send data", buf, amount);
-
- nbuf = os_realloc(conn->push_buf, conn->push_buf_len + amount);
- if (nbuf == NULL) {
- wpa_printf(MSG_ERROR, "NSS: Failed to allocate memory for the "
- "data to be sent");
- return PR_FAILURE;
- }
- os_memcpy(nbuf + conn->push_buf_len, buf, amount);
- conn->push_buf = nbuf;
- conn->push_buf_len += amount;
-
- return amount;
-}
-
-
-static PRInt32 nss_io_recvfrom(PRFileDesc *fd, void *buf, PRInt32 amount,
- PRIntn flags, PRNetAddr *addr,
- PRIntervalTime timeout)
-{
- wpa_printf(MSG_DEBUG, "NSS: I/O %s", __func__);
- return PR_FAILURE;
-}
-
-
-static PRInt32 nss_io_sendto(PRFileDesc *fd, const void *buf, PRInt32 amount,
- PRIntn flags, const PRNetAddr *addr,
- PRIntervalTime timeout)
-{
- wpa_printf(MSG_DEBUG, "NSS: I/O %s", __func__);
- return PR_FAILURE;
-}
-
-
-static PRStatus nss_io_getpeername(PRFileDesc *fd, PRNetAddr *addr)
-{
- wpa_printf(MSG_DEBUG, "NSS: I/O getpeername");
-
- /*
- * It Looks like NSS only supports IPv4 and IPv6 TCP sockets. Provide a
- * fake IPv4 address to work around this even though we are not really
- * using TCP.
- */
- os_memset(addr, 0, sizeof(*addr));
- addr->inet.family = PR_AF_INET;
-
- return PR_SUCCESS;
-}
-
-
-static PRStatus nss_io_getsocketoption(PRFileDesc *fd,
- PRSocketOptionData *data)
-{
- switch (data->option) {
- case PR_SockOpt_Nonblocking:
- wpa_printf(MSG_DEBUG, "NSS: I/O getsocketoption(Nonblocking)");
- data->value.non_blocking = PR_TRUE;
- return PR_SUCCESS;
- default:
- wpa_printf(MSG_DEBUG, "NSS: I/O getsocketoption(%d)",
- data->option);
- return PR_FAILURE;
- }
-}
-
-
-static const PRIOMethods nss_io = {
- PR_DESC_LAYERED,
- nss_io_close,
- nss_io_read,
- nss_io_write,
- NULL /* available */,
- NULL /* available64 */,
- NULL /* fsync */,
- NULL /* fseek */,
- NULL /* fseek64 */,
- NULL /* fileinfo */,
- NULL /* fileinfo64 */,
- nss_io_writev,
- NULL /* connect */,
- NULL /* accept */,
- NULL /* bind */,
- NULL /* listen */,
- NULL /* shutdown */,
- nss_io_recv,
- nss_io_send,
- nss_io_recvfrom,
- nss_io_sendto,
- NULL /* poll */,
- NULL /* acceptread */,
- NULL /* transmitfile */,
- NULL /* getsockname */,
- nss_io_getpeername,
- NULL /* reserved_fn_6 */,
- NULL /* reserved_fn_5 */,
- nss_io_getsocketoption,
- NULL /* setsocketoption */,
- NULL /* sendfile */,
- NULL /* connectcontinue */,
- NULL /* reserved_fn_3 */,
- NULL /* reserved_fn_2 */,
- NULL /* reserved_fn_1 */,
- NULL /* reserved_fn_0 */
-};
-
-
-static char * nss_password_cb(PK11SlotInfo *slot, PRBool retry, void *arg)
-{
- wpa_printf(MSG_ERROR, "NSS: TODO - %s", __func__);
- return NULL;
-}
-
-
-void * tls_init(const struct tls_config *conf)
-{
- char *dir;
-
- tls_nss_ref_count++;
- if (tls_nss_ref_count > 1)
- return (void *) 1;
-
- PR_Init(PR_SYSTEM_THREAD, PR_PRIORITY_NORMAL, 1);
-
- nss_layer_id = PR_GetUniqueIdentity("wpa_supplicant");
-
- PK11_SetPasswordFunc(nss_password_cb);
-
- dir = getenv("SSL_DIR");
- if (dir) {
- if (NSS_Init(dir) != SECSuccess) {
- wpa_printf(MSG_ERROR, "NSS: NSS_Init(cert_dir=%s) "
- "failed", dir);
- return NULL;
- }
- } else {
- if (NSS_NoDB_Init(NULL) != SECSuccess) {
- wpa_printf(MSG_ERROR, "NSS: NSS_NoDB_Init(NULL) "
- "failed");
- return NULL;
- }
- }
-
- if (SSL_OptionSetDefault(SSL_V2_COMPATIBLE_HELLO, PR_FALSE) !=
- SECSuccess ||
- SSL_OptionSetDefault(SSL_ENABLE_SSL3, PR_FALSE) != SECSuccess ||
- SSL_OptionSetDefault(SSL_ENABLE_SSL2, PR_FALSE) != SECSuccess ||
- SSL_OptionSetDefault(SSL_ENABLE_TLS, PR_TRUE) != SECSuccess) {
- wpa_printf(MSG_ERROR, "NSS: SSL_OptionSetDefault failed");
- return NULL;
- }
-
- if (NSS_SetDomesticPolicy() != SECSuccess) {
- wpa_printf(MSG_ERROR, "NSS: NSS_SetDomesticPolicy() failed");
- return NULL;
- }
-
- return (void *) 1;
-}
-
-void tls_deinit(void *ssl_ctx)
-{
- tls_nss_ref_count--;
- if (tls_nss_ref_count == 0) {
- if (NSS_Shutdown() != SECSuccess)
- wpa_printf(MSG_ERROR, "NSS: NSS_Shutdown() failed");
- }
-}
-
-
-int tls_get_errors(void *tls_ctx)
-{
- return 0;
-}
-
-
-static SECStatus nss_bad_cert_cb(void *arg, PRFileDesc *fd)
-{
- struct tls_connection *conn = arg;
- SECStatus res = SECSuccess;
- PRErrorCode err;
- CERTCertificate *cert;
- char *subject, *issuer;
-
- err = PR_GetError();
- if (IS_SEC_ERROR(err))
- wpa_printf(MSG_DEBUG, "NSS: Bad Server Certificate (sec err "
- "%d)", err - SEC_ERROR_BASE);
- else
- wpa_printf(MSG_DEBUG, "NSS: Bad Server Certificate (err %d)",
- err);
- cert = SSL_PeerCertificate(fd);
- subject = CERT_NameToAscii(&cert->subject);
- issuer = CERT_NameToAscii(&cert->issuer);
- wpa_printf(MSG_DEBUG, "NSS: Peer certificate subject='%s' issuer='%s'",
- subject, issuer);
- CERT_DestroyCertificate(cert);
- PR_Free(subject);
- PR_Free(issuer);
- if (conn->verify_peer)
- res = SECFailure;
-
- return res;
-}
-
-
-static void nss_handshake_cb(PRFileDesc *fd, void *client_data)
-{
- struct tls_connection *conn = client_data;
- wpa_printf(MSG_DEBUG, "NSS: Handshake completed");
- conn->established = 1;
-}
-
-
-struct tls_connection * tls_connection_init(void *tls_ctx)
-{
- struct tls_connection *conn;
-
- conn = os_zalloc(sizeof(*conn));
- if (conn == NULL)
- return NULL;
-
- conn->fd = PR_CreateIOLayerStub(nss_layer_id, &nss_io);
- if (conn->fd == NULL) {
- os_free(conn);
- return NULL;
- }
- conn->fd->secret = (void *) conn;
-
- conn->fd = SSL_ImportFD(NULL, conn->fd);
- if (conn->fd == NULL) {
- os_free(conn);
- return NULL;
- }
-
- if (SSL_OptionSet(conn->fd, SSL_SECURITY, PR_TRUE) != SECSuccess ||
- SSL_OptionSet(conn->fd, SSL_HANDSHAKE_AS_CLIENT, PR_TRUE) !=
- SECSuccess ||
- SSL_OptionSet(conn->fd, SSL_HANDSHAKE_AS_SERVER, PR_FALSE) !=
- SECSuccess ||
- SSL_OptionSet(conn->fd, SSL_ENABLE_TLS, PR_TRUE) != SECSuccess ||
- SSL_BadCertHook(conn->fd, nss_bad_cert_cb, conn) != SECSuccess ||
- SSL_HandshakeCallback(conn->fd, nss_handshake_cb, conn) !=
- SECSuccess) {
- wpa_printf(MSG_ERROR, "NSS: Failed to set options");
- PR_Close(conn->fd);
- os_free(conn);
- return NULL;
- }
-
- SSL_ResetHandshake(conn->fd, PR_FALSE);
-
- return conn;
-}
-
-
-void tls_connection_deinit(void *tls_ctx, struct tls_connection *conn)
-{
- PR_Close(conn->fd);
- os_free(conn->push_buf);
- os_free(conn->pull_buf);
- os_free(conn);
-}
-
-
-int tls_connection_established(void *tls_ctx, struct tls_connection *conn)
-{
- return conn->established;
-}
-
-
-int tls_connection_shutdown(void *tls_ctx, struct tls_connection *conn)
-{
- return -1;
-}
-
-
-int tls_connection_set_params(void *tls_ctx, struct tls_connection *conn,
- const struct tls_connection_params *params)
-{
- wpa_printf(MSG_ERROR, "NSS: TODO - %s", __func__);
- return 0;
-}
-
-
-int tls_global_set_params(void *tls_ctx,
- const struct tls_connection_params *params)
-{
- return -1;
-}
-
-
-int tls_global_set_verify(void *tls_ctx, int check_crl)
-{
- return -1;
-}
-
-
-int tls_connection_set_verify(void *tls_ctx, struct tls_connection *conn,
- int verify_peer)
-{
- conn->verify_peer = verify_peer;
- return 0;
-}
-
-
-int tls_connection_set_ia(void *tls_ctx, struct tls_connection *conn,
- int tls_ia)
-{
- return -1;
-}
-
-
-int tls_connection_get_keys(void *tls_ctx, struct tls_connection *conn,
- struct tls_keys *keys)
-{
- /* NSS does not export master secret or client/server random. */
- return -1;
-}
-
-
-int tls_connection_prf(void *tls_ctx, struct tls_connection *conn,
- const char *label, int server_random_first,
- u8 *out, size_t out_len)
-{
- if (conn == NULL || server_random_first) {
- wpa_printf(MSG_INFO, "NSS: Unsupported PRF request "
- "(server_random_first=%d)",
- server_random_first);
- return -1;
- }
-
- if (SSL_ExportKeyingMaterial(conn->fd, label, NULL, 0, out, out_len) !=
- SECSuccess) {
- wpa_printf(MSG_INFO, "NSS: Failed to use TLS extractor "
- "(label='%s' out_len=%d", label, (int) out_len);
- return -1;
- }
-
- return 0;
-}
-
-
-struct wpabuf * tls_connection_handshake(void *tls_ctx,
- struct tls_connection *conn,
- const struct wpabuf *in_data,
- struct wpabuf **appl_data)
-{
- struct wpabuf *out_data;
-
- wpa_printf(MSG_DEBUG, "NSS: handshake: in_len=%u",
- in_data ? (unsigned int) wpabuf_len(in_data) : 0);
-
- if (appl_data)
- *appl_data = NULL;
-
- if (in_data && wpabuf_len(in_data) > 0) {
- if (conn->pull_buf) {
- wpa_printf(MSG_DEBUG, "%s - %lu bytes remaining in "
- "pull_buf", __func__,
- (unsigned long) conn->pull_buf_len);
- os_free(conn->pull_buf);
- }
- conn->pull_buf = os_malloc(wpabuf_len(in_data));
- if (conn->pull_buf == NULL)
- return NULL;
- os_memcpy(conn->pull_buf, wpabuf_head(in_data),
- wpabuf_len(in_data));
- conn->pull_buf_offset = conn->pull_buf;
- conn->pull_buf_len = wpabuf_len(in_data);
- }
-
- SSL_ForceHandshake(conn->fd);
-
- if (conn->established && conn->push_buf == NULL) {
- /* Need to return something to get final TLS ACK. */
- conn->push_buf = os_malloc(1);
- }
-
- if (conn->push_buf == NULL)
- return NULL;
- out_data = wpabuf_alloc_ext_data(conn->push_buf, conn->push_buf_len);
- if (out_data == NULL)
- os_free(conn->push_buf);
- conn->push_buf = NULL;
- conn->push_buf_len = 0;
- return out_data;
-}
-
-
-struct wpabuf * tls_connection_server_handshake(void *tls_ctx,
- struct tls_connection *conn,
- const struct wpabuf *in_data,
- struct wpabuf **appl_data)
-{
- return NULL;
-}
-
-
-struct wpabuf * tls_connection_encrypt(void *tls_ctx,
- struct tls_connection *conn,
- const struct wpabuf *in_data)
-{
- PRInt32 res;
- struct wpabuf *buf;
-
- wpa_printf(MSG_DEBUG, "NSS: encrypt %d bytes",
- (int) wpabuf_len(in_data));
- res = PR_Send(conn->fd, wpabuf_head(in_data), wpabuf_len(in_data), 0,
- 0);
- if (res < 0) {
- wpa_printf(MSG_ERROR, "NSS: Encryption failed");
- return NULL;
- }
- if (conn->push_buf == NULL)
- return NULL;
- buf = wpabuf_alloc_ext_data(conn->push_buf, conn->push_buf_len);
- if (buf == NULL)
- os_free(conn->push_buf);
- conn->push_buf = NULL;
- conn->push_buf_len = 0;
- return buf;
-}
-
-
-struct wpabuf * tls_connection_decrypt(void *tls_ctx,
- struct tls_connection *conn,
- const struct wpabuf *in_data)
-{
- PRInt32 res;
- struct wpabuf *out;
-
- wpa_printf(MSG_DEBUG, "NSS: decrypt %d bytes",
- (int) wpabuf_len(in_data));
- if (conn->pull_buf) {
- wpa_printf(MSG_DEBUG, "%s - %lu bytes remaining in "
- "pull_buf", __func__,
- (unsigned long) conn->pull_buf_len);
- os_free(conn->pull_buf);
- }
- conn->pull_buf = os_malloc(wpabuf_len(in_data));
- if (conn->pull_buf == NULL)
- return NULL;
- os_memcpy(conn->pull_buf, wpabuf_head(in_data), wpabuf_len(in_data));
- conn->pull_buf_offset = conn->pull_buf;
- conn->pull_buf_len = wpabuf_len(in_data);
-
- /*
- * Even though we try to disable TLS compression, it is possible that
- * this cannot be done with all TLS libraries. Add extra buffer space
- * to handle the possibility of the decrypted data being longer than
- * input data.
- */
- out = wpabuf_alloc((wpabuf_len(in_data) + 500) * 3);
- if (out == NULL)
- return NULL;
-
- res = PR_Recv(conn->fd, wpabuf_mhead(out), wpabuf_size(out), 0, 0);
- wpa_printf(MSG_DEBUG, "NSS: PR_Recv: %d", res);
- if (res < 0) {
- wpabuf_free(out);
- return NULL;
- }
- wpabuf_put(out, res);
-
- return out;
-}
-
-
-int tls_connection_resumed(void *tls_ctx, struct tls_connection *conn)
-{
- return 0;
-}
-
-
-int tls_connection_set_cipher_list(void *tls_ctx, struct tls_connection *conn,
- u8 *ciphers)
-{
- return -1;
-}
-
-
-int tls_get_cipher(void *tls_ctx, struct tls_connection *conn,
- char *buf, size_t buflen)
-{
- return -1;
-}
-
-
-int tls_connection_enable_workaround(void *tls_ctx,
- struct tls_connection *conn)
-{
- return -1;
-}
-
-
-int tls_connection_client_hello_ext(void *tls_ctx, struct tls_connection *conn,
- int ext_type, const u8 *data,
- size_t data_len)
-{
- return -1;
-}
-
-
-int tls_connection_get_failed(void *tls_ctx, struct tls_connection *conn)
-{
- return 0;
-}
-
-
-int tls_connection_get_read_alerts(void *tls_ctx, struct tls_connection *conn)
-{
- return 0;
-}
-
-
-int tls_connection_get_write_alerts(void *tls_ctx,
- struct tls_connection *conn)
-{
- return 0;
-}
-
-
-int tls_connection_get_keyblock_size(void *tls_ctx,
- struct tls_connection *conn)
-{
- return -1;
-}
-
-
-unsigned int tls_capabilities(void *tls_ctx)
-{
- return 0;
-}
-
-
-struct wpabuf * tls_connection_ia_send_phase_finished(
- void *tls_ctx, struct tls_connection *conn, int final)
-{
- return NULL;
-}
-
-
-int tls_connection_ia_final_phase_finished(void *tls_ctx,
- struct tls_connection *conn)
-{
- return -1;
-}
-
-
-int tls_connection_ia_permute_inner_secret(void *tls_ctx,
- struct tls_connection *conn,
- const u8 *key, size_t key_len)
-{
- return -1;
-}
-
-
-int tls_connection_set_session_ticket_cb(void *tls_ctx,
- struct tls_connection *conn,
- tls_session_ticket_cb cb,
- void *ctx)
-{
- return -1;
-}
projects / mech_eap.git / blobdiff