171 lines
3.3 KiB
C
171 lines
3.3 KiB
C
/* sockdebug.c - Network UPS Tools driver-server socket debugger
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Copyright (C) 2003 Russell Kroll <rkroll@exploits.org>
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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 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <fcntl.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <sys/un.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include "common.h"
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#include "parseconf.h"
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PCONF_CTX_t sock_ctx;
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static void sock_arg(int numarg, char **arg)
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{
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int i;
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printf("numarg=%d : ", numarg);
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for (i = 0; i < numarg; i++)
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printf("[%s] ", arg[i]);
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printf("\n");
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}
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static int socket_connect(const char *sockfn)
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{
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int ret, fd;
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struct sockaddr_un sa;
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memset(&sa, '\0', sizeof(sa));
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sa.sun_family = AF_UNIX;
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snprintf(sa.sun_path, sizeof(sa.sun_path), "%s", sockfn);
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fd = socket(AF_UNIX, SOCK_STREAM, 0);
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if (fd < 0) {
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perror("socket");
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exit(EXIT_FAILURE);
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}
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ret = connect(fd, (struct sockaddr *) &sa, sizeof(sa));
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if (ret < 0) {
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perror("connect");
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exit(EXIT_FAILURE);
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}
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#if 0
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ret = fcntl(fd, F_GETFL, 0);
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if (ret < 0) {
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perror("fcntl(get)");
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exit(EXIT_FAILURE);
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}
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ret = fcntl(fd, F_SETFL, ret | O_NDELAY);
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if (ret < 0) {
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perror("fcntl(set)");
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exit(EXIT_FAILURE);
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}
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#endif
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return fd;
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}
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static void read_sock(int fd)
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{
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int i, ret;
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char buf[SMALLBUF];
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ret = read(fd, buf, sizeof(buf));
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if (ret == 0) {
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fprintf(stderr, "read on socket returned 0\n");
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exit(EXIT_FAILURE);
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}
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if (ret < 0) {
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perror("read sockfd");
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exit(EXIT_FAILURE);
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}
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for (i = 0; i < ret; i++) {
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switch (pconf_char(&sock_ctx, buf[i])) {
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case 1:
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sock_arg(sock_ctx.numargs, sock_ctx.arglist);
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break;
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case -1:
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printf("Parse error: [%s]\n", sock_ctx.errmsg);
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break;
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}
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}
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}
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int main(int argc, char **argv)
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{
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int ret, sockfd;
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if (argc != 2) {
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fprintf(stderr, "usage: %s <socket name>\n", argv[0]);
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fprintf(stderr, " %s /var/state/ups/apcsmart-ttyS1.newsock\n",
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argv[0]);
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exit(EXIT_SUCCESS);
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}
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sockfd = socket_connect(argv[1]);
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printf("connected: fd %d\n", sockfd);
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pconf_init(&sock_ctx, NULL);
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for (;;) {
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struct timeval tv;
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fd_set rfds;
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int maxfd;
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tv.tv_sec = 2;
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tv.tv_usec = 0;
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FD_ZERO(&rfds);
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FD_SET(fileno(stdin), &rfds);
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FD_SET(sockfd, &rfds);
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/* paranoia */
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maxfd = (sockfd > fileno(stdin)) ? sockfd : fileno(stdin);
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ret = select(maxfd + 1, &rfds, NULL, NULL, &tv);
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if (FD_ISSET(sockfd, &rfds))
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read_sock(sockfd);
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if (FD_ISSET(fileno(stdin), &rfds)) {
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char buf[SMALLBUF];
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fgets(buf, sizeof(buf), stdin);
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ret = write(sockfd, buf, strlen(buf));
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if ((ret < 0) || (ret != (int) strlen(buf))) {
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perror("write to socket");
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exit(EXIT_FAILURE);
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}
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}
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}
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/* NOTREACHED */
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exit(EXIT_FAILURE);
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}
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