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Create a noisy dgram test that can drop/duplicate/reorder UDP packets and ensure that the QUIC connection is tolerant of this. At this stage we just create the outline of the test. Adding in the noise will come in future commits. Reviewed-by: Tim Hudson <tjh@openssl.org> Reviewed-by: Paul Dale <pauli@openssl.org> (Merged from #22157)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,130 @@ | ||
| /* | ||
| * Copyright 2023 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 | ||
| */ | ||
|
|
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| #include <openssl/bio.h> | ||
| #include "quictestlib.h" | ||
|
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| static int noisy_dgram_read(BIO *bio, char *out, int outl) | ||
| { | ||
| /* We don't support this - not needed anyway */ | ||
| return -1; | ||
| } | ||
|
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| static int noisy_dgram_write(BIO *bio, const char *in, int inl) | ||
| { | ||
| /* We don't support this - not needed anyway */ | ||
| return -1; | ||
| } | ||
|
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| static long noisy_dgram_ctrl(BIO *bio, int cmd, long num, void *ptr) | ||
| { | ||
| long ret; | ||
| BIO *next = BIO_next(bio); | ||
|
|
||
| if (next == NULL) | ||
| return 0; | ||
|
|
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| switch (cmd) { | ||
| case BIO_CTRL_DUP: | ||
| ret = 0L; | ||
| break; | ||
| default: | ||
| ret = BIO_ctrl(next, cmd, num, ptr); | ||
| break; | ||
| } | ||
| return ret; | ||
| } | ||
|
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| static int noisy_dgram_gets(BIO *bio, char *buf, int size) | ||
| { | ||
| /* We don't support this - not needed anyway */ | ||
| return -1; | ||
| } | ||
|
|
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| static int noisy_dgram_puts(BIO *bio, const char *str) | ||
| { | ||
| /* We don't support this - not needed anyway */ | ||
| return -1; | ||
| } | ||
|
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| static int noisy_dgram_sendmmsg(BIO *bio, BIO_MSG *msg, size_t stride, | ||
| size_t num_msg, uint64_t flags, | ||
| size_t *msgs_processed) | ||
| { | ||
| BIO *next = BIO_next(bio); | ||
|
|
||
| if (next == NULL) | ||
| return 0; | ||
|
|
||
| /* | ||
| * We only introduce noise when receiving messages. We just pass this on | ||
| * to the underlying BIO. | ||
| */ | ||
| return BIO_sendmmsg(next, msg, stride, num_msg, flags, msgs_processed); | ||
| } | ||
|
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| static int noisy_dgram_recvmmsg(BIO *bio, BIO_MSG *msg, size_t stride, | ||
| size_t num_msg, uint64_t flags, | ||
| size_t *msgs_processed) | ||
| { | ||
| BIO *next = BIO_next(bio); | ||
|
|
||
| if (next == NULL) | ||
| return 0; | ||
|
|
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| /* | ||
| * We will introduce noise here. None implemented yet. | ||
| */ | ||
| return BIO_recvmmsg(next, msg, stride, num_msg, flags, msgs_processed); | ||
| } | ||
|
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| static int noisy_dgram_new(BIO *bio) | ||
| { | ||
| BIO_set_init(bio, 1); | ||
|
|
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| return 1; | ||
| } | ||
|
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| static int noisy_dgram_free(BIO *bio) | ||
| { | ||
| BIO_set_init(bio, 0); | ||
|
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| return 1; | ||
| } | ||
|
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| /* Choose a sufficiently large type likely to be unused for this custom BIO */ | ||
| #define BIO_TYPE_NOISY_DGRAM_FILTER (0x80 | BIO_TYPE_FILTER) | ||
|
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| static BIO_METHOD *method_noisy_dgram = NULL; | ||
|
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| /* Note: Not thread safe! */ | ||
| const BIO_METHOD *bio_f_noisy_dgram_filter(void) | ||
| { | ||
| if (method_noisy_dgram == NULL) { | ||
| method_noisy_dgram = BIO_meth_new(BIO_TYPE_NOISY_DGRAM_FILTER, | ||
| "Nosiy datagram filter"); | ||
| if (method_noisy_dgram == NULL | ||
| || !BIO_meth_set_write(method_noisy_dgram, noisy_dgram_write) | ||
| || !BIO_meth_set_read(method_noisy_dgram, noisy_dgram_read) | ||
| || !BIO_meth_set_puts(method_noisy_dgram, noisy_dgram_puts) | ||
| || !BIO_meth_set_gets(method_noisy_dgram, noisy_dgram_gets) | ||
| || !BIO_meth_set_ctrl(method_noisy_dgram, noisy_dgram_ctrl) | ||
| || !BIO_meth_set_sendmmsg(method_noisy_dgram, noisy_dgram_sendmmsg) | ||
| || !BIO_meth_set_recvmmsg(method_noisy_dgram, noisy_dgram_recvmmsg) | ||
| || !BIO_meth_set_create(method_noisy_dgram, noisy_dgram_new) | ||
| || !BIO_meth_set_destroy(method_noisy_dgram, noisy_dgram_free)) | ||
| return NULL; | ||
| } | ||
| return method_noisy_dgram; | ||
| } | ||
|
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| void bio_f_noisy_dgram_filter_free(void) | ||
| { | ||
| BIO_meth_free(method_noisy_dgram); | ||
| } |
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