[457] | 1 | /**
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| 2 | * @file
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| 3 | * Application layered TCP connection API (to be used from TCPIP thread)\n
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| 4 | * This interface mimics the tcp callback API to the application while preventing
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| 5 | * direct linking (much like virtual functions).
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| 6 | * This way, an application can make use of other application layer protocols
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| 7 | * on top of TCP without knowing the details (e.g. TLS, proxy connection).
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| 8 | *
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| 9 | * This file contains allocation implementation that combine several layers.
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| 10 | */
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| 11 |
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| 12 | /*
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| 13 | * Copyright (c) 2017 Simon Goldschmidt
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| 14 | * All rights reserved.
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| 15 | *
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| 16 | * Redistribution and use in source and binary forms, with or without modification,
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| 17 | * are permitted provided that the following conditions are met:
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| 18 | *
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| 19 | * 1. Redistributions of source code must retain the above copyright notice,
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| 20 | * this list of conditions and the following disclaimer.
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| 21 | * 2. Redistributions in binary form must reproduce the above copyright notice,
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| 22 | * this list of conditions and the following disclaimer in the documentation
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| 23 | * and/or other materials provided with the distribution.
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| 24 | * 3. The name of the author may not be used to endorse or promote products
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| 25 | * derived from this software without specific prior written permission.
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| 26 | *
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| 27 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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| 28 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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| 29 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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| 30 | * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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| 31 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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| 32 | * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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| 33 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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| 34 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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| 35 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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| 36 | * OF SUCH DAMAGE.
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| 37 | *
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| 38 | * This file is part of the lwIP TCP/IP stack.
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| 39 | *
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| 40 | * Author: Simon Goldschmidt <goldsimon@gmx.de>
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| 41 | *
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| 42 | */
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| 43 |
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| 44 | #include "lwip/opt.h"
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| 45 |
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| 46 | #if LWIP_ALTCP /* don't build if not configured for use in lwipopts.h */
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| 47 |
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| 48 | #include "lwip/altcp.h"
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| 49 | #include "lwip/altcp_tcp.h"
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| 50 | #include "lwip/altcp_tls.h"
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| 51 | #include "lwip/priv/altcp_priv.h"
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| 52 | #include "lwip/mem.h"
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| 53 |
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| 54 | #include <string.h>
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| 55 |
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| 56 | #if LWIP_ALTCP_TLS
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| 57 |
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| 58 | /** This standard allocator function creates an altcp pcb for
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| 59 | * TLS over TCP */
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| 60 | struct altcp_pcb *
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| 61 | altcp_tls_new(struct altcp_tls_config *config, u8_t ip_type)
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| 62 | {
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| 63 | struct altcp_pcb *inner_conn, *ret;
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| 64 | LWIP_UNUSED_ARG(ip_type);
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| 65 |
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| 66 | inner_conn = altcp_tcp_new_ip_type(ip_type);
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| 67 | if (inner_conn == NULL) {
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| 68 | return NULL;
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| 69 | }
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| 70 | ret = altcp_tls_wrap(config, inner_conn);
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| 71 | if (ret == NULL) {
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| 72 | altcp_close(inner_conn);
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| 73 | }
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| 74 | return ret;
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| 75 | }
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| 76 |
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| 77 | /** This standard allocator function creates an altcp pcb for
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| 78 | * TLS over TCP */
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| 79 | struct altcp_pcb *
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| 80 | altcp_tls_alloc(void *arg, u8_t ip_type)
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| 81 | {
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| 82 | return altcp_tls_new((struct altcp_tls_config *)arg, ip_type);
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| 83 | }
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| 84 |
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| 85 | #endif /* LWIP_ALTCP_TLS */
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| 86 |
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| 87 | #endif /* LWIP_ALTCP */
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