include/internal/quic_tserver.h

   1 /*
   2  * Copyright 2022 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the Apache License 2.0 (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 #ifndef OSSL_QUIC_TSERVER_H
  11 # define OSSL_QUIC_TSERVER_H
  12
  13 # include <openssl/ssl.h>
  14 # include <openssl/bio.h>
  15 # include "internal/quic_stream.h"
  16 # include "internal/quic_channel.h"
  17 # include "internal/statem.h"
  18 # include "internal/time.h"
  19
  20 # ifndef OPENSSL_NO_QUIC
  21
  22 /*
  23  * QUIC Test Server Module
  24  * =======================
  25  *
  26  * This implements a QUIC test server. Since full QUIC server support is not yet
  27  * implemented this server is limited in features and scope. It exists to
  28  * provide a target for our QUIC client to talk to for testing purposes.
  29  *
  30  * A given QUIC test server instance supports only one client at a time.
  31  *
  32  * Note that this test server is not suitable for production use because it does
  33  * not implement address verification, anti-amplification or retry logic.
  34  */
  35 typedef struct quic_tserver_st QUIC_TSERVER;
  36
  37 typedef struct quic_tserver_args_st {
  38     OSSL_LIB_CTX *libctx;
  39     const char *propq;
  40     SSL_CTX *ctx;
  41     BIO *net_rbio, *net_wbio;
  42     OSSL_TIME (*now_cb)(void *arg);
  43     void *now_cb_arg;
  44     const unsigned char *alpn;
  45     size_t alpnlen;
  46 } QUIC_TSERVER_ARGS;
  47
  48 QUIC_TSERVER *ossl_quic_tserver_new(const QUIC_TSERVER_ARGS *args,
  49                                     const char *certfile, const char *keyfile);
  50
  51 void ossl_quic_tserver_free(QUIC_TSERVER *srv);
  52
  53 /* Set mutator callbacks for test framework support */
  54 int ossl_quic_tserver_set_plain_packet_mutator(QUIC_TSERVER *srv,
  55                                                ossl_mutate_packet_cb mutatecb,
  56                                                ossl_finish_mutate_cb finishmutatecb,
  57                                                void *mutatearg);
  58
  59 int ossl_quic_tserver_set_handshake_mutator(QUIC_TSERVER *srv,
  60                                             ossl_statem_mutate_handshake_cb mutate_handshake_cb,
  61                                             ossl_statem_finish_mutate_handshake_cb finish_mutate_handshake_cb,
  62                                             void *mutatearg);
  63
  64 /* Advances the state machine. */
  65 int ossl_quic_tserver_tick(QUIC_TSERVER *srv);
  66
  67 /* Returns 1 if we have a (non-terminated) client. */
  68 int ossl_quic_tserver_is_connected(QUIC_TSERVER *srv);
  69
  70 /*
  71  * Returns 1 if we have finished the TLS handshake
  72  */
  73 int ossl_quic_tserver_is_handshake_confirmed(const QUIC_TSERVER *srv);
  74
  75 /* Returns 1 if the server is in any terminating or terminated state */
  76 int ossl_quic_tserver_is_term_any(const QUIC_TSERVER *srv);
  77
  78 const QUIC_TERMINATE_CAUSE *
  79 ossl_quic_tserver_get_terminate_cause(const QUIC_TSERVER *srv);
  80
  81 /* Returns 1 if the server is in a terminated state */
  82 int ossl_quic_tserver_is_terminated(const QUIC_TSERVER *srv);
  83
  84 /*
  85  * Attempts to read from stream 0. Writes the number of bytes read to
  86  * *bytes_read and returns 1 on success. If no bytes are available, 0 is written
  87  * to *bytes_read and 1 is returned (this is considered a success case).
  88  *
  89  * Returns 0 if connection is not currently active. If the receive part of
  90  * the stream has reached the end of stream condition, returns 0; call
  91  * ossl_quic_tserver_has_read_ended() to identify this condition.
  92  */
  93 int ossl_quic_tserver_read(QUIC_TSERVER *srv,
  94                            uint64_t stream_id,
  95                            unsigned char *buf,
  96                            size_t buf_len,
  97                            size_t *bytes_read);
  98
  99 /*
 100  * Returns 1 if the read part of the stream has ended normally.
 101  */
 102 int ossl_quic_tserver_has_read_ended(QUIC_TSERVER *srv, uint64_t stream_id);
 103
 104 /*
 105  * Attempts to write to the given stream. Writes the number of bytes consumed to
 106  * *bytes_written and returns 1 on success. If there is no space currently
 107  * available to write any bytes, 0 is written to *consumed and 1 is returned
 108  * (this is considered a success case).
 109  *
 110  * Note that unlike libssl public APIs, this API always works in a 'partial
 111  * write' mode.
 112  *
 113  * Returns 0 if connection is not currently active.
 114  */
 115 int ossl_quic_tserver_write(QUIC_TSERVER *srv,
 116                             uint64_t stream_id,
 117                             const unsigned char *buf,
 118                             size_t buf_len,
 119                             size_t *bytes_written);
 120
 121 /*
 122  * Signals normal end of the stream.
 123  */
 124 int ossl_quic_tserver_conclude(QUIC_TSERVER *srv, uint64_t stream_id);
 125
 126 /*
 127  * Create a server-initiated stream. The stream ID of the newly
 128  * created stream is written to *stream_id.
 129  */
 130 int ossl_quic_tserver_stream_new(QUIC_TSERVER *srv,
 131                                  int is_uni,
 132                                  uint64_t *stream_id);
 133
 134 BIO *ossl_quic_tserver_get0_rbio(QUIC_TSERVER *srv);
 135
 136 SSL_CTX *ossl_quic_tserver_get0_ssl_ctx(QUIC_TSERVER *srv);
 137
 138 /*
 139  * Returns 1 if the peer has sent a STOP_SENDING frame for a stream.
 140  * app_error_code is written if this returns 1.
 141  */
 142 int ossl_quic_tserver_stream_has_peer_stop_sending(QUIC_TSERVER *srv,
 143                                                    uint64_t stream_id,
 144                                                    uint64_t *app_error_code);
 145
 146 /*
 147  * Returns 1 if the peer has sent a RESET_STREAM frame for a stream.
 148  * app_error_code is written if this returns 1.
 149  */
 150 int ossl_quic_tserver_stream_has_peer_reset_stream(QUIC_TSERVER *srv,
 151                                                    uint64_t stream_id,
 152                                                    uint64_t *app_error_code);
 153
 154 /*
 155  * Replaces existing local connection ID in the underlying QUIC_CHANNEL.
 156  */
 157 int ossl_quic_tserver_set_new_local_cid(QUIC_TSERVER *srv,
 158                                         const QUIC_CONN_ID *conn_id);
 159
 160 /*
 161  * Returns the stream ID of the next incoming stream, or UINT64_MAX if there
 162  * currently is none.
 163  */
 164 uint64_t ossl_quic_tserver_pop_incoming_stream(QUIC_TSERVER *srv);
 165
 166 /*
 167  * Returns 1 if all data sent on the given stream_id has been acked by the peer.
 168  */
 169 int ossl_quic_tserver_is_stream_totally_acked(QUIC_TSERVER *srv,
 170                                               uint64_t stream_id);
 171
 172 /* Returns 1 if we are currently interested in reading data from the network */
 173 int ossl_quic_tserver_get_net_read_desired(QUIC_TSERVER *srv);
 174
 175 /* Returns 1 if we are currently interested in writing data to the network */
 176 int ossl_quic_tserver_get_net_write_desired(QUIC_TSERVER *srv);
 177
 178 /* Returns the next event deadline */
 179 OSSL_TIME ossl_quic_tserver_get_deadline(QUIC_TSERVER *srv);
 180
 181 /*
 182  * Shutdown the QUIC connection. Returns 1 if the connection is terminated and
 183  * 0 otherwise.
 184  */
 185 int ossl_quic_tserver_shutdown(QUIC_TSERVER *srv);
 186
 187 /* Force generation of an ACK-eliciting packet. */
 188 int ossl_quic_tserver_ping(QUIC_TSERVER *srv);
 189
 190 # endif
 191
 192 #endif