1/* 2 * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved. 3 * 4 * Licensed under the OpenSSL license (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/***************************************************************************** 11 * * 12 * The following macros/functions are PRIVATE to the record layer. They * 13 * should NOT be used outside of the record layer. * 14 * * 15 *****************************************************************************/ 16 17#define MAX_WARN_ALERT_COUNT 5 18 19/* Functions/macros provided by the RECORD_LAYER component */ 20 21#define RECORD_LAYER_get_rrec(rl) ((rl)->rrec) 22#define RECORD_LAYER_set_packet(rl, p) ((rl)->packet = (p)) 23#define RECORD_LAYER_reset_packet_length(rl) ((rl)->packet_length = 0) 24#define RECORD_LAYER_get_rstate(rl) ((rl)->rstate) 25#define RECORD_LAYER_set_rstate(rl, st) ((rl)->rstate = (st)) 26#define RECORD_LAYER_get_read_sequence(rl) ((rl)->read_sequence) 27#define RECORD_LAYER_get_write_sequence(rl) ((rl)->write_sequence) 28#define RECORD_LAYER_get_numrpipes(rl) ((rl)->numrpipes) 29#define RECORD_LAYER_set_numrpipes(rl, n) ((rl)->numrpipes = (n)) 30#define RECORD_LAYER_inc_empty_record_count(rl) ((rl)->empty_record_count++) 31#define RECORD_LAYER_reset_empty_record_count(rl) \ 32 ((rl)->empty_record_count = 0) 33#define RECORD_LAYER_get_empty_record_count(rl) ((rl)->empty_record_count) 34#define RECORD_LAYER_is_first_record(rl) ((rl)->is_first_record) 35#define RECORD_LAYER_set_first_record(rl) ((rl)->is_first_record = 1) 36#define RECORD_LAYER_clear_first_record(rl) ((rl)->is_first_record = 0) 37#define DTLS_RECORD_LAYER_get_r_epoch(rl) ((rl)->d->r_epoch) 38 39__owur int ssl3_read_n(SSL *s, size_t n, size_t max, int extend, int clearold, 40 size_t *readbytes); 41 42DTLS1_BITMAP *dtls1_get_bitmap(SSL *s, SSL3_RECORD *rr, 43 unsigned int *is_next_epoch); 44int dtls1_process_buffered_records(SSL *s); 45int dtls1_retrieve_buffered_record(SSL *s, record_pqueue *queue); 46int dtls1_buffer_record(SSL *s, record_pqueue *q, unsigned char *priority); 47void ssl3_record_sequence_update(unsigned char *seq); 48 49/* Functions provided by the DTLS1_BITMAP component */ 50 51int dtls1_record_replay_check(SSL *s, DTLS1_BITMAP *bitmap); 52void dtls1_record_bitmap_update(SSL *s, DTLS1_BITMAP *bitmap); 53 54/* Macros/functions provided by the SSL3_BUFFER component */ 55 56#define SSL3_BUFFER_get_buf(b) ((b)->buf) 57#define SSL3_BUFFER_set_buf(b, n) ((b)->buf = (n)) 58#define SSL3_BUFFER_get_len(b) ((b)->len) 59#define SSL3_BUFFER_set_len(b, l) ((b)->len = (l)) 60#define SSL3_BUFFER_get_left(b) ((b)->left) 61#define SSL3_BUFFER_set_left(b, l) ((b)->left = (l)) 62#define SSL3_BUFFER_sub_left(b, l) ((b)->left -= (l)) 63#define SSL3_BUFFER_get_offset(b) ((b)->offset) 64#define SSL3_BUFFER_set_offset(b, o) ((b)->offset = (o)) 65#define SSL3_BUFFER_add_offset(b, o) ((b)->offset += (o)) 66#define SSL3_BUFFER_is_initialised(b) ((b)->buf != NULL) 67#define SSL3_BUFFER_set_default_len(b, l) ((b)->default_len = (l)) 68#define SSL3_BUFFER_set_app_buffer(b, l) ((b)->app_buffer = (l)) 69#define SSL3_BUFFER_is_app_buffer(b) ((b)->app_buffer) 70 71void SSL3_BUFFER_clear(SSL3_BUFFER *b); 72void SSL3_BUFFER_set_data(SSL3_BUFFER *b, const unsigned char *d, size_t n); 73void SSL3_BUFFER_release(SSL3_BUFFER *b); 74__owur int ssl3_setup_read_buffer(SSL *s); 75__owur int ssl3_setup_write_buffer(SSL *s, size_t numwpipes, size_t len); 76int ssl3_release_read_buffer(SSL *s); 77int ssl3_release_write_buffer(SSL *s); 78 79/* Macros/functions provided by the SSL3_RECORD component */ 80 81#define SSL3_RECORD_get_type(r) ((r)->type) 82#define SSL3_RECORD_set_type(r, t) ((r)->type = (t)) 83#define SSL3_RECORD_set_rec_version(r, v) ((r)->rec_version = (v)) 84#define SSL3_RECORD_get_length(r) ((r)->length) 85#define SSL3_RECORD_set_length(r, l) ((r)->length = (l)) 86#define SSL3_RECORD_add_length(r, l) ((r)->length += (l)) 87#define SSL3_RECORD_sub_length(r, l) ((r)->length -= (l)) 88#define SSL3_RECORD_get_data(r) ((r)->data) 89#define SSL3_RECORD_set_data(r, d) ((r)->data = (d)) 90#define SSL3_RECORD_get_input(r) ((r)->input) 91#define SSL3_RECORD_set_input(r, i) ((r)->input = (i)) 92#define SSL3_RECORD_reset_input(r) ((r)->input = (r)->data) 93#define SSL3_RECORD_reset_data(r) ((r)->data = (r)->input) 94#define SSL3_RECORD_get_seq_num(r) ((r)->seq_num) 95#define SSL3_RECORD_get_off(r) ((r)->off) 96#define SSL3_RECORD_set_off(r, o) ((r)->off = (o)) 97#define SSL3_RECORD_add_off(r, o) ((r)->off += (o)) 98#define SSL3_RECORD_get_epoch(r) ((r)->epoch) 99#define SSL3_RECORD_is_sslv2_record(r) \ 100 ((r)->rec_version == SSL2_VERSION) 101#define SSL3_RECORD_is_read(r) ((r)->read) 102#define SSL3_RECORD_set_read(r) ((r)->read = 1) 103 104void SSL3_RECORD_clear(SSL3_RECORD *r, size_t); 105void SSL3_RECORD_release(SSL3_RECORD *r, size_t num_recs); 106void SSL3_RECORD_set_seq_num(SSL3_RECORD *r, const unsigned char *seq_num); 107int ssl3_get_record(SSL *s); 108__owur int ssl3_do_compress(SSL *ssl, SSL3_RECORD *wr); 109__owur int ssl3_do_uncompress(SSL *ssl, SSL3_RECORD *rr); 110int ssl3_cbc_copy_mac(unsigned char *out, 111 const SSL3_RECORD *rec, size_t md_size); 112__owur int ssl3_cbc_remove_padding(SSL3_RECORD *rec, 113 size_t block_size, size_t mac_size); 114__owur int tls1_cbc_remove_padding(const SSL *s, 115 SSL3_RECORD *rec, 116 size_t block_size, size_t mac_size); 117int dtls1_process_record(SSL *s, DTLS1_BITMAP *bitmap); 118__owur int dtls1_get_record(SSL *s); 119int early_data_count_ok(SSL *s, size_t length, size_t overhead, int send); 120