Subversion Repositories Mokou

/* $Id: main.c 12 2024-09-07 10:18:01Z nishi $ */

#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>

#include <stdbool.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>

int main(int argc, char** argv){
        if(argc < 2){
                fprintf(stderr, "Usage: %s action [target]\n", argv[0]);
                fprintf(stderr, "Actions:\n");
                fprintf(stderr, "\treload   Reloads the service direcetory\n");
                fprintf(stderr, "\tstart    Start the service\n");
                fprintf(stderr, "\tstop     Stop the service\n");
                return 1;
        }
        char* msg = NULL;
        if(strcmp(argv[1], "reload") == 0){
                msg = malloc(3);
                msg[0] = 'R';
                msg[1] = '\n';
                msg[2] = 0;
        }else if(strcmp(argv[1], "start") == 0){
                if(argv[2] == NULL){
                        fprintf(stderr, "Target is needed for this action\n");
                        return 1;
                }
                msg = malloc(3 + strlen(argv[2]));
                msg[0] = 'U';
                strcpy(msg + 1, argv[2]);
                msg[1 + strlen(argv[2])] = '\n';
                msg[2 + strlen(argv[2])] = 0;
        }else if(strcmp(argv[1], "stop") == 0){
                if(argv[2] == NULL){
                        fprintf(stderr, "Target is needed for this action\n");
                        return 1;
                }
                msg = malloc(3 + strlen(argv[2]));
                msg[0] = 'D';
                strcpy(msg + 1, argv[2]);
                msg[1 + strlen(argv[2])] = '\n';
                msg[2 + strlen(argv[2])] = 0;
        }else{
                fprintf(stderr, "Unknown action: %s\n", argv[1]);
                return 1;
        }
        if(msg != NULL){
                int sock = socket(AF_LOCAL, SOCK_STREAM, 0);
                if(sock == -1){
                        fprintf(stderr, "Socket creation failure\n");
                        return 1;
                }
                struct sockaddr_un sun;
                sun.sun_family = AF_LOCAL;
                strcpy(sun.sun_path, "/tmp/mokou.sock");
                if(connect(sock, (struct sockaddr*)&sun, sizeof(sun)) == -1){
                        fprintf(stderr, "Connection failure: %s\n", strerror(errno));
                        close(sock);
                        return 1;
                }
                send(sock, msg, strlen(msg), 0);
                
                char cbuf[2];
                cbuf[1] = 0;

                bool first = true;
                bool err = false;
                while(1){
                        if(recv(sock, cbuf, 1, 0) <= 0) break;
                        if(cbuf[0] == '\n'){
                                break;
                        }else if(cbuf[0] != '\r'){
                                if(first && cbuf[0] == 'E'){
                                        err = true;
                                        fprintf(stderr, "Error: ");
                                }else if(!first){
                                        fprintf(err ? stderr : stdout, "%c", cbuf[0]);
                                }
                                first = false;
                        }
                }
                fprintf(err ? stderr : stdout, "\n");

                close(sock);
                free(msg);
        }
}