384 lines
7.6 KiB
C
384 lines
7.6 KiB
C
#include <stdio.h>
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#include <sys/stat.h>
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#include <ctype.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <libgen.h>
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#include <signal.h>
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#include <sys/wait.h>
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#include <sys/ioctl.h>
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#include <fcntl.h>
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#if defined(linux)
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# include <pty.h>
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#elif defined(__OpenBSD__) || defined(__NetBSD__) || defined(__APPLE__)
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# include <util.h>
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#else
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# include <libutil.h>
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#endif
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#include "bbs.h"
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#include "lua/lua.h"
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#include "lua/lualib.h"
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#include "lua/lauxlib.h"
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extern struct bbs_config conf;
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extern int mynode;
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extern int gSocket;
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extern int sshBBS;
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extern int bbs_stderr;
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int running_door_pid = 0;
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int running_door = 0;
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extern int timeoutpaused;
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void doorchld_handler(int s)
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{
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// waitpid() might overwrite errno, so we save and restore it:
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while(waitpid(-1, NULL, WNOHANG) > 0);
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running_door = 0;
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}
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int write_door32sys(struct user_record *user) {
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struct stat s;
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char buffer[256];
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FILE *fptr;
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char *ptr;
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int i;
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sprintf(buffer, "%s/node%d", conf.bbs_path, mynode);
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if (stat(buffer, &s) != 0) {
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mkdir(buffer, 0755);
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}
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sprintf(buffer, "%s/node%d/door32.sys", conf.bbs_path, mynode);
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fptr = fopen(buffer, "w");
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if (!fptr) {
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dolog("Unable to open %s for writing!", buffer);
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return 1;
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}
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fprintf(fptr, "2\r\n"); // telnet type
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fprintf(fptr, "%d\r\n", gSocket); // socket
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fprintf(fptr, "38400\r\n"); // baudrate
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fprintf(fptr, "Magicka %d.%d\r\n", VERSION_MAJOR, VERSION_MINOR);
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fprintf(fptr, "%d\r\n", user->id);
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fprintf(fptr, "%s %s\r\n", user->firstname, user->lastname);
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fprintf(fptr, "%s\r\n", user->loginname);
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fprintf(fptr, "%d\r\n", user->sec_level);
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fprintf(fptr, "%d\r\n", user->timeleft);
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fprintf(fptr, "1\r\n"); // ansi emulation = 1
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fprintf(fptr, "%d\r\n", mynode);
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fclose(fptr);
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// create dorinfo1.def
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sprintf(buffer, "%s/node%d", conf.bbs_path, mynode);
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if (stat(buffer, &s) != 0) {
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mkdir(buffer, 0755);
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}
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sprintf(buffer, "%s/node%d/dorinfo1.def", conf.bbs_path, mynode);
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fptr = fopen(buffer, "w");
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if (!fptr) {
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dolog("Unable to open %s for writing!", buffer);
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return 1;
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}
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strcpy(buffer, conf.sysop_name);
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ptr = NULL;
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for (i=0;i<strlen(buffer);i++) {
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if (buffer[i] == ' ') {
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ptr = &buffer[i+1];
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buffer[i] = '\0';
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break;
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}
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}
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fprintf(fptr, "%s\r\n", conf.bbs_name); // telnet type
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fprintf(fptr, "%s\r\n", buffer);
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if (ptr != NULL) {
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fprintf(fptr, "%s\r\n", ptr);
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} else {
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fprintf(fptr, "\r\n");
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}
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fprintf(fptr, "COM1\r\n"); // com port
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fprintf(fptr, "38400 BAUD,N,8,1\r\n");
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fprintf(fptr, "0\r\n");
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fprintf(fptr, "%s\r\n", user->firstname);
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fprintf(fptr, "%s\r\n", user->lastname);
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fprintf(fptr, "%s\r\n", user->location);
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fprintf(fptr, "1\r\n");
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fprintf(fptr, "%d\r\n", user->sec_level);
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fprintf(fptr, "%d\r\n", user->timeleft);
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fprintf(fptr, "-1\r\n");
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fclose(fptr);
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return 0;
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}
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void rundoor(struct user_record *user, char *cmd, int stdio) {
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char *arguments[4];
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int door_out;
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char buffer[10];
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if (sshBBS) {
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door_out = STDOUT_FILENO;
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} else {
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door_out = gSocket;
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}
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arguments[0] = strdup(cmd);
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sprintf(buffer, "%d", mynode);
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arguments[1] = strdup(buffer);
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sprintf(buffer, "%d", door_out);
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arguments[2] = strdup(buffer);
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arguments[3] = NULL;
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runexternal(user, cmd, stdio, arguments, NULL, 0);
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free(arguments[0]);
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free(arguments[1]);
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free(arguments[2]);
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}
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void runexternal(struct user_record *user, char *cmd, int stdio, char *argv[], char *cwd, int raw) {
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char buffer[1024];
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int pid;
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int ret;
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unsigned char c;
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int len;
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int master;
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int slave;
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fd_set fdset;
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int t;
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struct winsize ws;
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struct sigaction sa;
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int door_in;
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int door_out;
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int i;
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int gotiac;
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int flush;
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struct timeval thetimeout;
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struct termios oldit;
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struct termios oldot;
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struct termios oldit2;
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char inbuf[256];
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char outbuf[512];
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int h;
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int g;
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timeoutpaused = 1;
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if (write_door32sys(user) != 0) {
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return;
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}
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if (stdio) {
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if (sshBBS) {
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door_in = STDIN_FILENO;
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door_out = STDOUT_FILENO;
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} else {
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door_in = gSocket;
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door_out = gSocket;
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}
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ws.ws_row = 24;
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ws.ws_col = 80;
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running_door = 1;
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if (!sshBBS) {
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if (openpty(&master, &slave, NULL, NULL, &ws) == 0) {
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sa.sa_handler = doorchld_handler;
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sigemptyset(&sa.sa_mask);
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sa.sa_flags = SA_RESTART | SA_SIGINFO;
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if (sigaction(SIGCHLD, &sa, NULL) == -1) {
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perror("sigaction");
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exit(1);
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}
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if (raw) {
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ttySetRaw(master, &oldit2);
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ttySetRaw(slave, &oldit2);
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}
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pid = fork();
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if (pid < 0) {
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return;
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} else if (pid == 0) {
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if (cwd != NULL) {
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chdir(cwd);
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}
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close(master);
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dup2(slave, 0);
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dup2(slave, 1);
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close(slave);
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setsid();
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ioctl(0, TIOCSCTTY, 1);
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execvp(cmd, argv);
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} else {
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running_door_pid = pid;
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gotiac = 0;
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flush = 0;
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while(running_door || !flush) {
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FD_ZERO(&fdset);
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FD_SET(master, &fdset);
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FD_SET(door_in, &fdset);
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if (master > door_in) {
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t = master + 1;
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} else {
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t = door_in + 1;
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}
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thetimeout.tv_sec = 5;
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thetimeout.tv_usec = 0;
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ret = select(t, &fdset, NULL, NULL, &thetimeout);
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if (ret > 0) {
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if (FD_ISSET(door_in, &fdset)) {
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len = read(door_in, inbuf, 256);
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if (len == 0) {
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close(master);
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disconnect("Socket Closed");
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return;
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}
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g = 0;
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for (h=0;h<len;h++) {
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c = inbuf[h];
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if (!raw) {
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if (c == '\n' || c == '\0') {
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continue;
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}
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}
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if (!running_door) {
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continue;
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}
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if (c == 255) {
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if (gotiac == 1) {
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outbuf[g++] = c;
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gotiac = 0;
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} else {
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gotiac = 1;
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}
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} else {
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if (gotiac == 1) {
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if (c == 254 || c == 253 || c == 252 || c == 251) {
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gotiac = 2;
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} else if (c == 250) {
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gotiac = 3;
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} else {
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gotiac = 0;
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}
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} else if (gotiac == 2) {
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gotiac = 0;
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} else if (gotiac == 3) {
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if (c == 240) {
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gotiac = 0;
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}
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} else {
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outbuf[g++] = c;
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}
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}
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}
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write(master, outbuf, g);
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} else if (FD_ISSET(master, &fdset)) {
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len = read(master, inbuf, 256);
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if (len == 0) {
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close(master);
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break;
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}
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g = 0;
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for (h=0;h<len;h++) {
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c = inbuf[h];
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if (c == 255) {
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outbuf[g++] = c;
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}
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outbuf[g++] = c;
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}
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write(door_out, outbuf, g);
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}
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} else {
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if (!running_door) {
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flush = 1;
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}
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}
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}
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}
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}
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} else {
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if (raw) {
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ttySetRaw(STDIN_FILENO, &oldit);
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ttySetRaw(STDOUT_FILENO, &oldot);
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}
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sa.sa_handler = doorchld_handler;
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sigemptyset(&sa.sa_mask);
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sa.sa_flags = SA_RESTART | SA_SIGINFO;
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if (sigaction(SIGCHLD, &sa, NULL) == -1) {
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perror("sigaction");
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exit(1);
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}
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pid = fork();
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if (pid < 0) {
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return;
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} else if (pid == 0) {
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if (cwd != NULL) {
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chdir(cwd);
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}
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dup2(bbs_stderr, 2);
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execvp(cmd, argv);
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} else {
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while(running_door) {
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sleep(1);
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}
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}
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if (raw) {
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tcsetattr(STDIN_FILENO, TCSANOW, &oldit);
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tcsetattr(STDOUT_FILENO, TCSANOW, &oldot);
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}
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}
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} else {
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if (!sshBBS) {
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snprintf(buffer, 1024, "%s", cmd);
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for (i=1;argv[i] != NULL; i++) {
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snprintf(&buffer[strlen(buffer)], 1024 - strlen(buffer), " %s", argv[i]);
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}
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if (cwd != NULL) {
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chdir(cwd);
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}
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system(buffer);
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if (cwd != NULL) {
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chdir(conf.bbs_path);
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}
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} else {
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s_printf(get_string(51));
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}
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}
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timeoutpaused = 0;
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} |