comparison: src/server/util/socket.c
src/server/util/socket.c
- changeset 673
- 144bdc33fdb6
- child 674
- 6a031133a498
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| 672:226bfd584075 | 673:144bdc33fdb6 |
|---|---|
| 1 /* | |
| 2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. | |
| 3 * | |
| 4 * Copyright 2026 Olaf Wintermann. All rights reserved. | |
| 5 * | |
| 6 * Redistribution and use in source and binary forms, with or without | |
| 7 * modification, are permitted provided that the following conditions are met: | |
| 8 * | |
| 9 * 1. Redistributions of source code must retain the above copyright | |
| 10 * notice, this list of conditions and the following disclaimer. | |
| 11 * | |
| 12 * 2. Redistributions in binary form must reproduce the above copyright | |
| 13 * notice, this list of conditions and the following disclaimer in the | |
| 14 * documentation and/or other materials provided with the distribution. | |
| 15 * | |
| 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
| 17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE | |
| 20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
| 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
| 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
| 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
| 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
| 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
| 26 * POSSIBILITY OF SUCH DAMAGE. | |
| 27 */ | |
| 28 | |
| 29 #include "socket.h" | |
| 30 | |
| 31 #include <unistd.h> | |
| 32 #include <sys/fcntl.h> | |
| 33 #include <sys/socket.h> | |
| 34 #include <netinet/in.h> | |
| 35 #include <arpa/inet.h> | |
| 36 | |
| 37 int util_server_socket_local(short *port) { | |
| 38 int socket_fd = socket(AF_INET, SOCK_STREAM, 0); | |
| 39 if(socket_fd < 0) { | |
| 40 return -1; | |
| 41 } | |
| 42 | |
| 43 short socket_port = 0; | |
| 44 if(port) { | |
| 45 socket_port = *port; | |
| 46 } | |
| 47 | |
| 48 struct sockaddr_in addr; | |
| 49 addr.sin_family = AF_INET; | |
| 50 addr.sin_addr.s_addr = htonl(INADDR_LOOPBACK); | |
| 51 addr.sin_port = htons(socket_port); | |
| 52 | |
| 53 if(bind(socket_fd, (struct sockaddr*)&addr, sizeof(addr))) { | |
| 54 close(socket_fd); | |
| 55 return -1; | |
| 56 } | |
| 57 | |
| 58 socklen_t len = sizeof(addr); | |
| 59 if(getsockname(socket_fd, (struct sockaddr *)&addr, &len) < 0) { | |
| 60 close(socket_fd); | |
| 61 return -1; | |
| 62 } | |
| 63 | |
| 64 if(port) { | |
| 65 *port = ntohs(addr.sin_port); | |
| 66 } | |
| 67 | |
| 68 return socket_fd; | |
| 69 } | |
| 70 | |
| 71 int util_socket_connect_local(short port) { | |
| 72 int fd = socket(AF_INET, SOCK_STREAM, 0); | |
| 73 if(fd < 0) { | |
| 74 return -1; | |
| 75 } | |
| 76 | |
| 77 struct sockaddr_in addr; | |
| 78 addr.sin_family = AF_INET; | |
| 79 addr.sin_addr.s_addr = htonl(INADDR_LOOPBACK); | |
| 80 addr.sin_port = htons(port); | |
| 81 | |
| 82 if(connect(fd, (struct sockaddr*)&addr, sizeof(addr))) { | |
| 83 close(fd); | |
| 84 return -1; | |
| 85 } | |
| 86 | |
| 87 return fd; | |
| 88 } | |
| 89 | |
| 90 int util_socket_setnonblock(int fd, int nonblock) { | |
| 91 int flags; | |
| 92 if ((flags = fcntl(fd, F_GETFL, 0)) == -1) { | |
| 93 flags = 0; | |
| 94 } | |
| 95 if(nonblock) { | |
| 96 flags |= O_NONBLOCK; | |
| 97 } else { | |
| 98 flags &= ~O_NONBLOCK; | |
| 99 } | |
| 100 if (fcntl(fd, F_SETFL, flags) != 0) { | |
| 101 return 1; | |
| 102 } | |
| 103 return 0; | |
| 104 } |
