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ae5692994f
This function tells the underlying TLS object that it shouldn't close the fd on exit. Mostly, we hope not to have to use it, since the NSS implementation is kludgey, but it should allow us to fix
157 lines
5.9 KiB
C
157 lines
5.9 KiB
C
/* Copyright (c) 2003, Roger Dingledine
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* Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
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* Copyright (c) 2007-2018, The Tor Project, Inc. */
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/* See LICENSE for licensing information */
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#ifndef TOR_TORTLS_H
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#define TOR_TORTLS_H
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/**
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* \file tortls.h
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* \brief Headers for tortls.c
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**/
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#include "lib/crypt_ops/crypto_rsa.h"
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#include "lib/testsupport/testsupport.h"
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#include "lib/net/nettypes.h"
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/* Opaque structure to hold a TLS connection. */
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typedef struct tor_tls_t tor_tls_t;
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#ifdef TORTLS_PRIVATE
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#ifdef ENABLE_OPENSSL
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struct ssl_st;
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struct ssl_ctx_st;
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struct ssl_session_st;
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typedef struct ssl_ctx_st tor_tls_context_impl_t;
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typedef struct ssl_st tor_tls_impl_t;
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#else
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struct PRFileDesc;
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typedef struct PRFileDesc tor_tls_context_impl_t;
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typedef struct PRFileDesc tor_tls_impl_t;
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#endif
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#endif
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struct tor_x509_cert_t;
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/* Possible return values for most tor_tls_* functions. */
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#define MIN_TOR_TLS_ERROR_VAL_ -9
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#define TOR_TLS_ERROR_MISC -9
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/* Rename to unexpected close or something. XXXX */
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#define TOR_TLS_ERROR_IO -8
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#define TOR_TLS_ERROR_CONNREFUSED -7
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#define TOR_TLS_ERROR_CONNRESET -6
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#define TOR_TLS_ERROR_NO_ROUTE -5
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#define TOR_TLS_ERROR_TIMEOUT -4
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#define TOR_TLS_CLOSE -3
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#define TOR_TLS_WANTREAD -2
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#define TOR_TLS_WANTWRITE -1
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#define TOR_TLS_DONE 0
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/** Collection of case statements for all TLS errors that are not due to
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* underlying IO failure. */
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#define CASE_TOR_TLS_ERROR_ANY_NONIO \
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case TOR_TLS_ERROR_MISC: \
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case TOR_TLS_ERROR_CONNREFUSED: \
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case TOR_TLS_ERROR_CONNRESET: \
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case TOR_TLS_ERROR_NO_ROUTE: \
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case TOR_TLS_ERROR_TIMEOUT
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/** Use this macro in a switch statement to catch _any_ TLS error. That way,
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* if more errors are added, your switches will still work. */
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#define CASE_TOR_TLS_ERROR_ANY \
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CASE_TOR_TLS_ERROR_ANY_NONIO: \
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case TOR_TLS_ERROR_IO
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#define TOR_TLS_IS_ERROR(rv) ((rv) < TOR_TLS_CLOSE)
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/** Holds a SSL_CTX object and related state used to configure TLS
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* connections.
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*/
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typedef struct tor_tls_context_t tor_tls_context_t;
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const char *tor_tls_err_to_string(int err);
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void tor_tls_get_state_description(tor_tls_t *tls, char *buf, size_t sz);
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void tor_tls_free_all(void);
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#define TOR_TLS_CTX_IS_PUBLIC_SERVER (1u<<0)
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#define TOR_TLS_CTX_USE_ECDHE_P256 (1u<<1)
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#define TOR_TLS_CTX_USE_ECDHE_P224 (1u<<2)
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void tor_tls_init(void);
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void tls_log_errors(tor_tls_t *tls, int severity, int domain,
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const char *doing);
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int tor_tls_context_init(unsigned flags,
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crypto_pk_t *client_identity,
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crypto_pk_t *server_identity,
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unsigned int key_lifetime);
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void tor_tls_context_incref(tor_tls_context_t *ctx);
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void tor_tls_context_decref(tor_tls_context_t *ctx);
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tor_tls_context_t *tor_tls_context_get(int is_server);
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tor_tls_t *tor_tls_new(tor_socket_t sock, int is_server);
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void tor_tls_set_logged_address(tor_tls_t *tls, const char *address);
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void tor_tls_set_renegotiate_callback(tor_tls_t *tls,
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void (*cb)(tor_tls_t *, void *arg),
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void *arg);
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int tor_tls_is_server(tor_tls_t *tls);
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void tor_tls_release_socket(tor_tls_t *tls);
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void tor_tls_free_(tor_tls_t *tls);
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#define tor_tls_free(tls) FREE_AND_NULL(tor_tls_t, tor_tls_free_, (tls))
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int tor_tls_peer_has_cert(tor_tls_t *tls);
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MOCK_DECL(struct tor_x509_cert_t *,tor_tls_get_peer_cert,(tor_tls_t *tls));
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MOCK_DECL(struct tor_x509_cert_t *,tor_tls_get_own_cert,(tor_tls_t *tls));
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int tor_tls_verify(int severity, tor_tls_t *tls, crypto_pk_t **identity);
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MOCK_DECL(int, tor_tls_read, (tor_tls_t *tls, char *cp, size_t len));
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int tor_tls_write(tor_tls_t *tls, const char *cp, size_t n);
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int tor_tls_handshake(tor_tls_t *tls);
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int tor_tls_finish_handshake(tor_tls_t *tls);
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void tor_tls_unblock_renegotiation(tor_tls_t *tls);
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void tor_tls_block_renegotiation(tor_tls_t *tls);
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void tor_tls_assert_renegotiation_unblocked(tor_tls_t *tls);
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int tor_tls_get_pending_bytes(tor_tls_t *tls);
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size_t tor_tls_get_forced_write_size(tor_tls_t *tls);
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void tor_tls_get_n_raw_bytes(tor_tls_t *tls,
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size_t *n_read, size_t *n_written);
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int tor_tls_get_buffer_sizes(tor_tls_t *tls,
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size_t *rbuf_capacity, size_t *rbuf_bytes,
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size_t *wbuf_capacity, size_t *wbuf_bytes);
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MOCK_DECL(double, tls_get_write_overhead_ratio, (void));
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int tor_tls_used_v1_handshake(tor_tls_t *tls);
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int tor_tls_get_num_server_handshakes(tor_tls_t *tls);
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int tor_tls_server_got_renegotiate(tor_tls_t *tls);
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MOCK_DECL(int,tor_tls_cert_matches_key,(const tor_tls_t *tls,
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const struct tor_x509_cert_t *cert));
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MOCK_DECL(int,tor_tls_get_tlssecrets,(tor_tls_t *tls, uint8_t *secrets_out));
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MOCK_DECL(int,tor_tls_export_key_material,(
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tor_tls_t *tls, uint8_t *secrets_out,
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const uint8_t *context,
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size_t context_len,
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const char *label));
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#ifdef ENABLE_OPENSSL
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/* Log and abort if there are unhandled TLS errors in OpenSSL's error stack.
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*/
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#define check_no_tls_errors() check_no_tls_errors_(__FILE__,__LINE__)
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void check_no_tls_errors_(const char *fname, int line);
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void tor_tls_log_one_error(tor_tls_t *tls, unsigned long err,
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int severity, int domain, const char *doing);
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#else
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#define check_no_tls_errors() STMT_NIL
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#endif
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int tor_tls_get_my_certs(int server,
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const struct tor_x509_cert_t **link_cert_out,
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const struct tor_x509_cert_t **id_cert_out);
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crypto_pk_t *tor_tls_get_my_client_auth_key(void);
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const char *tor_tls_get_ciphersuite_name(tor_tls_t *tls);
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int evaluate_ecgroup_for_tls(const char *ecgroup);
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#endif /* !defined(TOR_TORTLS_H) */
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