projects / thirdparty / strongswan.git / blame
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1 | /* |
| 2 | * Copyright (C) 2010 Martin Willi | |
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3 | * |
| 4 | * Copyright (C) secunet Security Networks AG | |
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5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify it | |
| 7 | * under the terms of the GNU General Public License as published by the | |
| 8 | * Free Software Foundation; either version 2 of the License, or (at your | |
| 9 | * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. | |
| 10 | * | |
| 11 | * This program is distributed in the hope that it will be useful, but | |
| 12 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
| 13 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 14 | * for more details. | |
| 15 | */ | |
| 16 | ||
| 17 | /** | |
| 18 | * @defgroup tls_compression tls_compression | |
| 0f82a470 | 19 | * @{ @ingroup libtls |
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20 | */ |
| 21 | ||
| 22 | #ifndef TLS_COMPRESSION_H_ | |
| 23 | #define TLS_COMPRESSION_H_ | |
| 24 | ||
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25 | #include <library.h> |
| 26 | ||
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27 | typedef struct tls_compression_t tls_compression_t; |
| 28 | ||
| 40e384ea | 29 | #include "tls.h" |
| e6f3ef13 | 30 | #include "tls_alert.h" |
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31 | #include "tls_fragmentation.h" |
| 32 | ||
| 33 | /** | |
| 34 | * TLS record protocol compression layer. | |
| 35 | */ | |
| 36 | struct tls_compression_t { | |
| 37 | ||
| 38 | /** | |
| 39 | * Process a compressed TLS record, pass it to upper layers. | |
| 40 | * | |
| 41 | * @param type type of the TLS record to process | |
| 42 | * @param data associated TLS record data | |
| 43 | * @return | |
| 44 | * - SUCCESS if TLS negotiation complete | |
| 45 | * - FAILED if TLS handshake failed | |
| 46 | * - NEED_MORE if more invocations to process/build needed | |
| 47 | */ | |
| 48 | status_t (*process)(tls_compression_t *this, | |
| 49 | tls_content_type_t type, chunk_t data); | |
| 50 | ||
| 51 | /** | |
| 52 | * Query upper layer for TLS record, build compressed record. | |
| 53 | * | |
| 54 | * @param type type of the built TLS record | |
| 55 | * @param data allocated data of the built TLS record | |
| 56 | * @return | |
| 57 | * - SUCCESS if TLS negotiation complete | |
| 58 | * - FAILED if TLS handshake failed | |
| 59 | * - NEED_MORE if upper layers have more records to send | |
| 60 | * - INVALID_STATE if more input records required | |
| 61 | */ | |
| 62 | status_t (*build)(tls_compression_t *this, | |
| 63 | tls_content_type_t *type, chunk_t *data); | |
| 64 | ||
| 65 | /** | |
| 66 | * Destroy a tls_compression_t. | |
| 67 | */ | |
| 68 | void (*destroy)(tls_compression_t *this); | |
| 69 | }; | |
| 70 | ||
| 71 | /** | |
| 72 | * Create a tls_compression instance. | |
| 73 | * | |
| 74 | * @param fragmentation fragmentation layer of TLS stack | |
| e6f3ef13 | 75 | * @param alert TLS alert handler |
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76 | * @return TLS compression layer. |
| 77 | */ | |
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78 | tls_compression_t *tls_compression_create(tls_fragmentation_t *fragmentation, |
| 79 | tls_alert_t *alert); | |
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80 | |
| 81 | #endif /** TLS_COMPRESSION_H_ @}*/ |