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Revision 098f27f9ef8be2a418f76896ee3c824e8709fcf7 authored by Matt Caswell on 17 October 2023, 13:55:48 UTC, committed by Tomas Mraz on 19 October 2023, 09:54:44 UTC
Ignore ping deadline when calculating tick deadline if we can't send
If the CC TX allowance is zero then we cannot send a PING frame at the
moment, so do not take into account the ping deadline when calculating the
tick deadline in that case.

This avoids the hang found by the fuzzer mentioned in
https://github.com/openssl/openssl/pull/22368#issuecomment-1765131727

Reviewed-by: Hugo Landau <hlandau@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/22410)
1 parent 56e3032
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  • async.h
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async.h
/*
 * Copyright 2015-2022 The OpenSSL Project Authors. All Rights Reserved.
 *
 * Licensed under the Apache License 2.0 (the "License").  You may not use
 * this file except in compliance with the License.  You can obtain a copy
 * in the file LICENSE in the source distribution or at
 * https://www.openssl.org/source/license.html
 */

#include <stdlib.h>

#ifndef OPENSSL_ASYNC_H
# define OPENSSL_ASYNC_H
# pragma once

# include <openssl/macros.h>
# ifndef OPENSSL_NO_DEPRECATED_3_0
#  define HEADER_ASYNC_H
# endif

#if defined(_WIN32)
# if defined(BASETYPES) || defined(_WINDEF_H)
/* application has to include <windows.h> to use this */
#define OSSL_ASYNC_FD       HANDLE
#define OSSL_BAD_ASYNC_FD   INVALID_HANDLE_VALUE
# endif
#else
#define OSSL_ASYNC_FD       int
#define OSSL_BAD_ASYNC_FD   -1
#endif
# include <openssl/asyncerr.h>


# ifdef  __cplusplus
extern "C" {
# endif

typedef struct async_job_st ASYNC_JOB;
typedef struct async_wait_ctx_st ASYNC_WAIT_CTX;
typedef int (*ASYNC_callback_fn)(void *arg);

#define ASYNC_ERR      0
#define ASYNC_NO_JOBS  1
#define ASYNC_PAUSE    2
#define ASYNC_FINISH   3

#define ASYNC_STATUS_UNSUPPORTED    0
#define ASYNC_STATUS_ERR            1
#define ASYNC_STATUS_OK             2
#define ASYNC_STATUS_EAGAIN         3

int ASYNC_init_thread(size_t max_size, size_t init_size);
void ASYNC_cleanup_thread(void);

#ifdef OSSL_ASYNC_FD
ASYNC_WAIT_CTX *ASYNC_WAIT_CTX_new(void);
void ASYNC_WAIT_CTX_free(ASYNC_WAIT_CTX *ctx);
int ASYNC_WAIT_CTX_set_wait_fd(ASYNC_WAIT_CTX *ctx, const void *key,
                               OSSL_ASYNC_FD fd,
                               void *custom_data,
                               void (*cleanup)(ASYNC_WAIT_CTX *, const void *,
                                               OSSL_ASYNC_FD, void *));
int ASYNC_WAIT_CTX_get_fd(ASYNC_WAIT_CTX *ctx, const void *key,
                        OSSL_ASYNC_FD *fd, void **custom_data);
int ASYNC_WAIT_CTX_get_all_fds(ASYNC_WAIT_CTX *ctx, OSSL_ASYNC_FD *fd,
                               size_t *numfds);
int ASYNC_WAIT_CTX_get_callback(ASYNC_WAIT_CTX *ctx,
                                ASYNC_callback_fn *callback,
                                void **callback_arg);
int ASYNC_WAIT_CTX_set_callback(ASYNC_WAIT_CTX *ctx,
                                ASYNC_callback_fn callback,
                                void *callback_arg);
int ASYNC_WAIT_CTX_set_status(ASYNC_WAIT_CTX *ctx, int status);
int ASYNC_WAIT_CTX_get_status(ASYNC_WAIT_CTX *ctx);
int ASYNC_WAIT_CTX_get_changed_fds(ASYNC_WAIT_CTX *ctx, OSSL_ASYNC_FD *addfd,
                                   size_t *numaddfds, OSSL_ASYNC_FD *delfd,
                                   size_t *numdelfds);
int ASYNC_WAIT_CTX_clear_fd(ASYNC_WAIT_CTX *ctx, const void *key);
#endif

int ASYNC_is_capable(void);

typedef void *(*ASYNC_stack_alloc_fn)(size_t *num);
typedef void (*ASYNC_stack_free_fn)(void *addr);

int ASYNC_set_mem_functions(ASYNC_stack_alloc_fn alloc_fn,
                            ASYNC_stack_free_fn free_fn);
void ASYNC_get_mem_functions(ASYNC_stack_alloc_fn *alloc_fn,
                             ASYNC_stack_free_fn *free_fn);

int ASYNC_start_job(ASYNC_JOB **job, ASYNC_WAIT_CTX *ctx, int *ret,
                    int (*func)(void *), void *args, size_t size);
int ASYNC_pause_job(void);

ASYNC_JOB *ASYNC_get_current_job(void);
ASYNC_WAIT_CTX *ASYNC_get_wait_ctx(ASYNC_JOB *job);
void ASYNC_block_pause(void);
void ASYNC_unblock_pause(void);


# ifdef  __cplusplus
}
# endif
#endif
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