/* * rpc_server_loopback.c * --------------------- * Remote procedure call transport over loopback socket. * * Copyright (c) 2016, NORDUnet A/S All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * - Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * - Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * - Neither the name of the NORDUnet nor the names of its contributors may * be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include #include #include #include #include /* close */ #include "hal.h" #include "hal_internal.h" static int fd; hal_error_t hal_rpc_server_transport_init(void) { struct sockaddr_in sin; fd = socket(AF_INET, SOCK_DGRAM, 0); if (fd == -1) return perror("socket"), HAL_ERROR_RPC_TRANSPORT; sin.sin_family = AF_INET; sin.sin_addr.s_addr = htonl(INADDR_LOOPBACK); sin.sin_port = 17425; if (bind(fd, (const struct sockaddr *)&sin, sizeof(sin)) != 0) return perror("bind"), HAL_ERROR_RPC_TRANSPORT; return HAL_OK; } hal_error_t hal_rpc_server_transport_close(void) { if (close(fd) != 0) return perror("close"), HAL_ERROR_RPC_TRANSPORT; return HAL_OK; } hal_error_t hal_rpc_sendto(const uint8_t * const buf, const size_t len, void *opaque) { struct sockaddr_in *sin = (struct sockaddr_in *)opaque; int ret; if ((ret = sendto(fd, buf, len, 0, (struct sockaddr *)sin, sizeof(*sin))) == -1) return perror("sendto"), HAL_ERROR_RPC_TRANSPORT; return HAL_OK; } hal_error_t hal_rpc_recvfrom(uint8_t * const buf, size_t * const len, void **opaque) { static struct sockaddr_in sin; socklen_t sin_len = sizeof(sin); int ret; if ((ret = recvfrom(fd, buf, *len, 0, (struct sockaddr *)&sin, &sin_len)) == -1) return HAL_ERROR_RPC_TRANSPORT; *opaque = (void *)&sin; *len = ret; return HAL_OK; } ef='#n20'>20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128