134 lines
3.6 KiB
C++
134 lines
3.6 KiB
C++
/*
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* Copyright (C) 2009-2013 Jorge Arellano Cid <jcid@dillo.org>
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* Copyright (C) 2024 Rodrigo Arias Mallo <rodarima@gmail.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*/
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#include <stdio.h>
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#include <stdlib.h> /* for exit */
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#include <string.h> /* for memset */
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#include <unistd.h> /* for read and write */
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#include <ctype.h> /* for isxdigit */
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <netdb.h>
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#include <errno.h>
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#include "../dlib/dlib.hh"
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#include "../dpip/dpip.hh"
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#define MSG_ERR(...) printf("** ERROR **: " __VA_ARGS__);
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char *CMD_REGISTER = "<cmd='register_all' '>";
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char *CMD_STOP = "<cmd='DpiBye' '>";
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static char SharedKey[32];
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static void print_usage(const char *prgname)
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{
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fprintf(stderr,"Control program for the Flenser plugin daemon\n"
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"Usage: %s {stop|register|chat}\n\n", prgname);
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}
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static void error(char *msg)
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{
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perror(msg);
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exit(1);
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}
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/**
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* Read dpid's communication keys from its saved file.
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* Return value: 1 on success, -1 on error.
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*/
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static int Dpi_read_comm_keys(int *port)
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{
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FILE *In;
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char *fname, *rcline = NULL, *tail;
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int i, ret = -1;
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fname = dStrconcat(dGethomedir(), "/.flenser/dpid_comm_keys", NULL);
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if ((In = fopen(fname, "r")) == NULL) {
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MSG_ERR("[Dpi_read_comm_keys] %s\n", dStrerror(errno));
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} else if ((rcline = dGetline_unsafe(In)) == NULL) {
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MSG_ERR("[Dpi_read_comm_keys] empty file: %s\n", fname);
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} else {
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*port = strtol(rcline, &tail, 10);
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for (i = 0; *tail && isxdigit(tail[i+1]); ++i)
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SharedKey[i] = tail[i+1];
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SharedKey[i] = 0;
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ret = 1;
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}
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dFree(rcline);
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dFree(fname);
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return ret;
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}
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int main(int argc, char *argv[])
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{
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int sockfd, portno, n;
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struct sockaddr_in serv_addr;
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char buffer[256];
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if (argc != 2) {
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print_usage(argv[0]);
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exit(1);
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}
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/* Read dpid's port number from saved file */
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if (Dpi_read_comm_keys(&portno) == -1) {
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MSG_ERR("main: Can't read dpid's port number\n");
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exit(1);
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}
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sockfd = socket(AF_INET, SOCK_STREAM, 0);
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if (sockfd < 0)
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error("ERROR opening socket");
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memset(&serv_addr, 0, sizeof(serv_addr));
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serv_addr.sin_family = AF_INET;
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serv_addr.sin_addr.s_addr = inet_addr("127.0.0.1");
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serv_addr.sin_port = htons(portno);
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if (connect(sockfd, (struct sockaddr *)&serv_addr, sizeof(serv_addr)) < 0)
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error("ERROR connecting");
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snprintf(buffer, sizeof(buffer), "<cmd='auth' msg='%s' '>", SharedKey);
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n = write(sockfd, buffer, strlen(buffer));
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if (n < 0)
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error("ERROR writing to socket");
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if (strcmp(argv[1], "stop") == 0) {
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strcpy(buffer, CMD_STOP);
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} else if (strcmp(argv[1], "register") == 0) {
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strcpy(buffer, CMD_REGISTER);
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} else if (strcmp(argv[1], "chat") == 0) {
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printf("Please enter the message: ");
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memset(buffer,0,256);
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if (fgets(buffer,255,stdin) == NULL)
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MSG_ERR("dpidc: Can't read the message\n");
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} else {
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MSG_ERR("main: Unknown operation '%s'\n", argv[1]);
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print_usage(argv[0]);
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exit(1);
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}
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n = write(sockfd,buffer,strlen(buffer));
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if (n < 0)
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error("ERROR writing to socket");
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/*
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memset(buffer,0,256);
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n = read(sockfd,buffer,255);
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if (n < 0)
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error("ERROR reading from socket");
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printf("%s\n",buffer);
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*/
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dClose(sockfd);
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return 0;
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}
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