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annotate service.c @ 8:dec5fe6cd0d0

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Open the uinput device in write-only, and display every error.
author Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
date Tue, 18 Aug 2015 02:09:15 +0100
parents eafcd170dc6d
children
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1 #include "service.h"
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2 #include "uinput.h"
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3 #include "ds.h"
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4 #include "restartOp.h"
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5
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6 #include <stdio.h>
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7 #include <sys/types.h>
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8 #include <sys/socket.h>
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9 #include <netinet/in.h>
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10 #include <stdlib.h>
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11 #include <string.h>
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14 /*
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15 Create a socket
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16 Returns socket descriptor (-1 if error)
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17 */
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18 int create_socket(unsigned short *port, int type){
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19 int sock, autorisation , ok;
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20 struct sockaddr_in add;
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21 socklen_t l = sizeof(struct sockaddr_in);
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23 sock = socket(PF_INET, type, 0);
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24 if(sock == -1){
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25 perror("socket");
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26 return -1;
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27 }
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29 /* Pour pouvoir relancer immediatement un serveur TCP */
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30 /* ou lancer, sur une meme machine, */
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31 /* plusieurs recepteurs UDP sur */
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32 /* le meme port de diffusion (broadcast, multicast) */
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33 autorisation = 1;
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34 ok = setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &autorisation, sizeof(int));
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35 if(ok == -1){
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36 perror("setsockopt");
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37 return -1;
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38 }
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40 memset(&add, 0, l) ;
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41 add.sin_family = AF_INET ;
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42 add.sin_port = htons(*port);
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43 add.sin_addr.s_addr = htonl(INADDR_ANY);
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45 ok = bind(sock, (struct sockaddr*)&add, l);
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46 if(ok == -1){
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47 perror("bind");
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48 return -1;
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49 }
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51 ok = getsockname(sock, (struct sockaddr*)&add, &l);
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52 if(ok == -1){
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53 perror("getsockname");
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54 return -1;
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55 }
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57 *port = ntohs(add.sin_port);
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58 return sock;
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59 }
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61
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63 /*
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64 Receive a DS datagram
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65 Returns size read or -1
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66 */
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67 ssize_t receive_ds_info(int socket, ds_t* ds){
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68 struct sockaddr_in add;
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69 socklen_t l = sizeof(struct sockaddr_in);
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71 ssize_t result;
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73 result = recvfrom_rs(socket, ds, sizeof(ds_t), 0, (struct sockaddr*)&add, &l);
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74 if(result == -1) perror("recvfrom_rs");
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75 return result;
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76 }
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79 /*
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80 Start the listening service yeah!
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81 */
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82 void start_service(void){
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84 int uinput_fd;
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85 int sock_fd;
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86 uint16_t udp_port = base_port + curdev;
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88 ds_t ds;
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89 ssize_t result;
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92 fprintf(stdout, " [%d] Creation of service:\n", curdev);
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94 // Create joystick dev
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95 uinput_fd = init_uinput_device();
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96 if(uinput_fd == -1){
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97 fprintf(stderr, " [%d] Joystick device failed\n", curdev);
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98 exit(EXIT_FAILURE);
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99 }
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100 fprintf(stdout, " [%d] Joystick device OK\n", curdev);
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101
0
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102
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103 // Create udp socket
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104 sock_fd = create_socket(&udp_port, SOCK_DGRAM);
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105 if(sock_fd == -1){
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106 fprintf(stderr, " [%d] Socket failed\n", curdev);
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107 exit(EXIT_FAILURE);
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108 }
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109 fprintf(stdout, " [%d] Socket on port %d OK\n", curdev, udp_port);
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110
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111
0
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112 // Device and Socket are ok :-D
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113 fprintf(stdout, " [%d] Creation of service: OK\n", curdev);
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114
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115
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116 /* Center device axis when created */
6
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117 do_uinput(uinput_fd, ABS_X, 0, EV_ABS);
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118 do_uinput(uinput_fd, ABS_Y, 0, EV_ABS);
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119 do_uinput(uinput_fd, ABS_RX, 0, EV_ABS);
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120 do_uinput(uinput_fd, ABS_RY, 0, EV_ABS);
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121 //do_uinput(uinput_fd, ABS_TOUCH_X, (TOUCH_MAX_X - TOUCH_MIN_X) / 2, EV_ABS);
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122 //do_uinput(uinput_fd, ABS_TOUCH_Y, (TOUCH_MAX_Y - TOUCH_MIN_Y) / 2, EV_ABS);
0
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123
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124 while(1){
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125 result = receive_ds_info(sock_fd, &ds);
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126 if(result == -1){
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127 fprintf(stderr, " [%d] DS Info receive failed\n", curdev);
0
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128 }
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129 if(result > 0){
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130 ds_process_evt(&ds, uinput_fd);
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131 }
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132 }
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133
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134 return;
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135 }
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136
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137
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138