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libfandevice/main.c
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212
libfandevice/main.c
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/* * Copyright (c) 2023 Carl Klemm <carl@uvos.xyz>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation and/or
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* other materials provided with the distribution.
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* * Neither the name of %ORGANIZATION% nor the names of its contributors may be
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* used to endorse or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <signal.h>
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#include "fandevice.h"
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#include "options.h"
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static channel_t char_to_channel(char ch)
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{
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switch(ch)
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{
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case 'a':
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case 'A':
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case '1':
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return FAN_A;
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case 'b':
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case 'B':
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case '2':
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return FAN_B;
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case 'c':
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case 'C':
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case '3':
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return FAN_C;
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case 'd':
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case 'D':
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case '4':
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return FAN_D;
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default:
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return FAN_NONE;
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}
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}
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void print_commands(void)
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{
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puts("Valid commands:");
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puts("hearbeat\t | set a heatbeat packet");
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puts("set [CHANNEL] [SPEED]\t | the the fan speed for a channel");
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}
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static int process_commands(char** commands, size_t command_count, struct fandevice* device, char* name)
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{
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if(strcmp(commands[0], "help") == 0)
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{
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print_commands();
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}
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if(strcmp(commands[0], "heatbeat") == 0)
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{
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int ret = fandevice_heartbeat(device);
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if(ret < 0)
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printf("Error writeing to device");
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else
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printf("OK");
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}
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else if(strcmp(commands[0], "set") == 0)
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{
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if(command_count < 3)
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{
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printf("Usage %s %s [CHANNEL] [SPEED]\n", name, commands[0]);
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return 2;
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}
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channel_t channel = char_to_channel(commands[1][0]);
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if(channel == FAN_NONE)
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{
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printf("%s is not a valid channel\n", commands[1]);
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return 2;
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}
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double speed = strtod(commands[2], NULL);
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if(speed > 1 || speed < 0)
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{
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puts("Speed is out of range [0,1]");
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return 2;
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}
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fandevice_set_channel(device, channel, speed);
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}
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else
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{
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return -1;
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}
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return 0;
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}
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enum
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{
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INPUT_SUCESS = 0,
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INPUT_NO_INPUT,
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INPUT_TOO_LONG
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};
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static int get_input(char *prompt, char *buffer, size_t length)
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{
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int ch, extra;
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if(prompt != NULL)
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{
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fputs(prompt, stdout);
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fflush(stdout);
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}
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if(fgets (buffer, length, stdin) == NULL)
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return INPUT_NO_INPUT;
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if(buffer[strlen(buffer)-1] != '\n')
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{
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extra = 0;
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while((ch = getchar()) != '\n' && ch != EOF)
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extra = 1;
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return (extra == 1) ? INPUT_TOO_LONG : INPUT_SUCESS;
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}
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buffer[strlen(buffer)-1] = '\0';
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return INPUT_SUCESS;
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}
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int main(int argc, char* argv[])
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{
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struct config config = {};
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argp_parse(&argp, argc, argv, 0, 0, &config);
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if(config.list_commands)
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{
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print_commands();
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return 0;
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}
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if(config.command_count < 1 && !(config.interactive || config.pipe))
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{
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printf("A command is required\n");
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return 2;
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}
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struct fandevice device;
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if(fandevice_connect(&device, config.serialSet ? config.serial : 0))
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{
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char serialStr[5];
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snprintf(serialStr, sizeof(serialStr), "%04hu", config.serial);
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printf("Can not connect to FanDevice%s%s\n",
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config.serialSet ? " with serial " : "", config.serialSet ? serialStr : "");
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return 1;
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}
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int ret = 0;
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if(config.interactive || config.pipe)
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{
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char buffer[256];
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while(true)
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{
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int ret = get_input(config.pipe ? NULL : "> ", buffer, sizeof(buffer));
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if(ret == INPUT_NO_INPUT)
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{
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break;
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}
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else if(ret != INPUT_SUCESS)
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{
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puts("Invalid command");
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continue;
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}
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char* commands[MAX_COMMANDS];
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char* command = strtok(buffer, " \t");
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size_t i = 0;
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while(command && i < MAX_COMMANDS)
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{
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commands[i] = command;
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command = strtok(NULL, " \t");
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++i;
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}
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int cmdRet = process_commands(commands, i, &device, "");
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if(cmdRet == 0)
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puts("OK");
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else
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printf("ERR %i\n", cmdRet);
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}
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}
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else
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{
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ret = process_commands(config.commands, config.command_count, &device, argv[0]);
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}
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fandevice_disconnect(&device);
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return ret;
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}
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