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/*
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* Copyright (c) 1995 Danny Gasparovski.
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*
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* Please read the file COPYRIGHT for the
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* terms and conditions of the copyright.
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*/
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#include <slirp.h> |
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u_int curtime, time_fasttimo, last_slowtimo; |
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#if 0
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int x_port = -1;
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int x_display = 0;
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int x_screen = 0;
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int
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show_x(buff, inso)
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char *buff;
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struct socket *inso;
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{
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if (x_port < 0) {
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lprint("X Redir: X not being redirected.\r\n");
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} else {
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lprint("X Redir: In sh/bash/zsh/etc. type: DISPLAY=%s:%d.%d; export DISPLAY\r\n",
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inet_ntoa(our_addr), x_port, x_screen);
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lprint("X Redir: In csh/tcsh/etc. type: setenv DISPLAY %s:%d.%d\r\n",
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inet_ntoa(our_addr), x_port, x_screen);
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if (x_display)
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lprint("X Redir: Redirecting to display %d\r\n", x_display);
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}
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return CFG_OK;
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}
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/*
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* XXX Allow more than one X redirection?
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*/
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void
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redir_x(inaddr, start_port, display, screen)
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u_int32_t inaddr;
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int start_port;
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int display;
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int screen;
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{
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int i;
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if (x_port >= 0) {
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lprint("X Redir: X already being redirected.\r\n");
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show_x(0, 0);
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} else {
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for (i = 6001 + (start_port-1); i <= 6100; i++) {
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if (solisten(htons(i), inaddr, htons(6000 + display), 0)) {
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/* Success */
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x_port = i - 6000;
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x_display = display;
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x_screen = screen;
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show_x(0, 0);
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return;
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}
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}
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lprint("X Redir: Error: Couldn't redirect a port for X. Weird.\r\n");
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}
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}
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#endif
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/*
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* Get our IP address and put it in our_addr
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*/
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void
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getouraddr(void)
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{ |
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char buff[256]; |
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struct hostent *he = NULL; |
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if (gethostname(buff,256) == 0) |
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he = gethostbyname(buff); |
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if (he)
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our_addr = *(struct in_addr *)he->h_addr;
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if (our_addr.s_addr == 0) |
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our_addr.s_addr = loopback_addr.s_addr; |
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} |
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struct quehead {
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struct quehead *qh_link;
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struct quehead *qh_rlink;
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}; |
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inline void |
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insque(void *a, void *b) |
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{ |
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register struct quehead *element = (struct quehead *) a; |
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register struct quehead *head = (struct quehead *) b; |
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element->qh_link = head->qh_link; |
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head->qh_link = (struct quehead *)element;
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element->qh_rlink = (struct quehead *)head;
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((struct quehead *)(element->qh_link))->qh_rlink
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= (struct quehead *)element;
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} |
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inline void |
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remque(void *a)
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{ |
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register struct quehead *element = (struct quehead *) a; |
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((struct quehead *)(element->qh_link))->qh_rlink = element->qh_rlink;
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((struct quehead *)(element->qh_rlink))->qh_link = element->qh_link;
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element->qh_rlink = NULL;
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/* element->qh_link = NULL; TCP FIN1 crashes if you do this. Why ? */
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} |
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/* #endif */
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int
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add_exec(struct ex_list **ex_ptr, int do_pty, char *exec, int addr, int port) |
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{ |
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struct ex_list *tmp_ptr;
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/* First, check if the port is "bound" */
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for (tmp_ptr = *ex_ptr; tmp_ptr; tmp_ptr = tmp_ptr->ex_next) {
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if (port == tmp_ptr->ex_fport && addr == tmp_ptr->ex_addr)
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return -1; |
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} |
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tmp_ptr = *ex_ptr; |
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*ex_ptr = (struct ex_list *)malloc(sizeof(struct ex_list)); |
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(*ex_ptr)->ex_fport = port; |
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(*ex_ptr)->ex_addr = addr; |
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(*ex_ptr)->ex_pty = do_pty; |
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(*ex_ptr)->ex_exec = (do_pty == 3) ? exec : strdup(exec);
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(*ex_ptr)->ex_next = tmp_ptr; |
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return 0; |
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} |
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#ifndef HAVE_STRERROR
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/*
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* For systems with no strerror
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*/
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extern int sys_nerr; |
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extern char *sys_errlist[]; |
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char *
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strerror(error) |
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int error;
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{ |
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if (error < sys_nerr)
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return sys_errlist[error];
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else
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return "Unknown error."; |
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} |
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#endif
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#ifdef _WIN32
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int
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fork_exec(struct socket *so, const char *ex, int do_pty) |
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{ |
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/* not implemented */
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return 0; |
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} |
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#else
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#ifndef CONFIG_QEMU
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int
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slirp_openpty(amaster, aslave) |
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int *amaster, *aslave;
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{ |
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register int master, slave; |
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#ifdef HAVE_GRANTPT
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char *ptr;
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if ((master = open("/dev/ptmx", O_RDWR)) < 0 || |
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grantpt(master) < 0 ||
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unlockpt(master) < 0 ||
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(ptr = ptsname(master)) == NULL) {
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close(master); |
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return -1; |
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} |
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if ((slave = open(ptr, O_RDWR)) < 0 || |
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ioctl(slave, I_PUSH, "ptem") < 0 || |
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ioctl(slave, I_PUSH, "ldterm") < 0 || |
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ioctl(slave, I_PUSH, "ttcompat") < 0) { |
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close(master); |
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close(slave); |
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return -1; |
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} |
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*amaster = master; |
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*aslave = slave; |
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return 0; |
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#else
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static char line[] = "/dev/ptyXX"; |
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register const char *cp1, *cp2; |
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for (cp1 = "pqrsPQRS"; *cp1; cp1++) { |
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line[8] = *cp1;
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for (cp2 = "0123456789abcdefghijklmnopqrstuv"; *cp2; cp2++) { |
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line[9] = *cp2;
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if ((master = open(line, O_RDWR, 0)) == -1) { |
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if (errno == ENOENT)
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return (-1); /* out of ptys */ |
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} else {
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line[5] = 't'; |
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/* These will fail */
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(void) chown(line, getuid(), 0); |
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(void) chmod(line, S_IRUSR|S_IWUSR|S_IWGRP);
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#ifdef HAVE_REVOKE
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(void) revoke(line);
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#endif
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if ((slave = open(line, O_RDWR, 0)) != -1) { |
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*amaster = master; |
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*aslave = slave; |
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return 0; |
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} |
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(void) close(master);
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line[5] = 'p'; |
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} |
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} |
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} |
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errno = ENOENT; /* out of ptys */
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return (-1); |
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#endif
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} |
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#endif
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/*
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* XXX This is ugly
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* We create and bind a socket, then fork off to another
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* process, which connects to this socket, after which we
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* exec the wanted program. If something (strange) happens,
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* the accept() call could block us forever.
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*
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* do_pty = 0 Fork/exec inetd style
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* do_pty = 1 Fork/exec using slirp.telnetd
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* do_ptr = 2 Fork/exec using pty
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*/
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int
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fork_exec(struct socket *so, const char *ex, int do_pty) |
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{ |
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int s;
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struct sockaddr_in addr;
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socklen_t addrlen = sizeof(addr);
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int opt;
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int master = -1; |
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const char *argv[256]; |
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#if 0
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char buff[256];
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#endif
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/* don't want to clobber the original */
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char *bptr;
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const char *curarg; |
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int c, i, ret;
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DEBUG_CALL("fork_exec");
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DEBUG_ARG("so = %lx", (long)so); |
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DEBUG_ARG("ex = %lx", (long)ex); |
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DEBUG_ARG("do_pty = %lx", (long)do_pty); |
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if (do_pty == 2) { |
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#if 0
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if (slirp_openpty(&master, &s) == -1) {
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lprint("Error: openpty failed: %s\n", strerror(errno));
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return 0;
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}
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#else
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return 0; |
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#endif
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} else {
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addr.sin_family = AF_INET; |
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addr.sin_port = 0;
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addr.sin_addr.s_addr = INADDR_ANY; |
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if ((s = socket(AF_INET, SOCK_STREAM, 0)) < 0 || |
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bind(s, (struct sockaddr *)&addr, addrlen) < 0 || |
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listen(s, 1) < 0) { |
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lprint("Error: inet socket: %s\n", strerror(errno));
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closesocket(s); |
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return 0; |
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} |
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} |
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switch(fork()) {
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case -1: |
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lprint("Error: fork failed: %s\n", strerror(errno));
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close(s); |
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if (do_pty == 2) |
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close(master); |
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return 0; |
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case 0: |
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/* Set the DISPLAY */
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if (do_pty == 2) { |
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(void) close(master);
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#ifdef TIOCSCTTY /* XXXXX */ |
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(void) setsid();
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ioctl(s, TIOCSCTTY, (char *)NULL); |
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#endif
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} else {
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getsockname(s, (struct sockaddr *)&addr, &addrlen);
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close(s); |
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/*
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* Connect to the socket
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* XXX If any of these fail, we're in trouble!
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*/
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s = socket(AF_INET, SOCK_STREAM, 0);
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addr.sin_addr = loopback_addr; |
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do {
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ret = connect(s, (struct sockaddr *)&addr, addrlen);
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} while (ret < 0 && errno == EINTR); |
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} |
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#if 0
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if (x_port >= 0) {
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#ifdef HAVE_SETENV
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sprintf(buff, "%s:%d.%d", inet_ntoa(our_addr), x_port, x_screen);
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setenv("DISPLAY", buff, 1);
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#else
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sprintf(buff, "DISPLAY=%s:%d.%d", inet_ntoa(our_addr), x_port, x_screen);
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putenv(buff); |
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#endif
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} |
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#endif
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dup2(s, 0);
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dup2(s, 1);
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dup2(s, 2);
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for (s = getdtablesize() - 1; s >= 3; s--) |
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close(s); |
339 |
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i = 0;
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bptr = strdup(ex); /* No need to free() this */
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if (do_pty == 1) { |
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/* Setup "slirp.telnetd -x" */
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argv[i++] = "slirp.telnetd";
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argv[i++] = "-x";
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argv[i++] = bptr; |
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} else
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do {
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/* Change the string into argv[] */
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curarg = bptr; |
351 |
while (*bptr != ' ' && *bptr != (char)0) |
352 |
bptr++; |
353 |
c = *bptr; |
354 |
*bptr++ = (char)0; |
355 |
argv[i++] = strdup(curarg); |
356 |
} while (c);
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|
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argv[i] = NULL;
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execvp(argv[0], (char **)argv); |
360 |
|
361 |
/* Ooops, failed, let's tell the user why */
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{ |
363 |
char buff[256]; |
364 |
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snprintf(buff, sizeof(buff),
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"Error: execvp of %s failed: %s\n",
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argv[0], strerror(errno));
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write(2, buff, strlen(buff)+1); |
369 |
} |
370 |
close(0); close(1); close(2); /* XXX */ |
371 |
exit(1);
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372 |
|
373 |
default:
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374 |
if (do_pty == 2) { |
375 |
close(s); |
376 |
so->s = master; |
377 |
} else {
|
378 |
/*
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379 |
* XXX this could block us...
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380 |
* XXX Should set a timer here, and if accept() doesn't
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381 |
* return after X seconds, declare it a failure
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382 |
* The only reason this will block forever is if socket()
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383 |
* of connect() fail in the child process
|
384 |
*/
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385 |
do {
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386 |
so->s = accept(s, (struct sockaddr *)&addr, &addrlen);
|
387 |
} while (so->s < 0 && errno == EINTR); |
388 |
closesocket(s); |
389 |
opt = 1;
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390 |
setsockopt(so->s,SOL_SOCKET,SO_REUSEADDR,(char *)&opt,sizeof(int)); |
391 |
opt = 1;
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392 |
setsockopt(so->s,SOL_SOCKET,SO_OOBINLINE,(char *)&opt,sizeof(int)); |
393 |
} |
394 |
fd_nonblock(so->s); |
395 |
|
396 |
/* Append the telnet options now */
|
397 |
if (so->so_m != NULL && do_pty == 1) { |
398 |
sbappend(so, so->so_m); |
399 |
so->so_m = NULL;
|
400 |
} |
401 |
|
402 |
return 1; |
403 |
} |
404 |
} |
405 |
#endif
|
406 |
|
407 |
#ifndef HAVE_STRDUP
|
408 |
char *
|
409 |
strdup(str) |
410 |
const char *str; |
411 |
{ |
412 |
char *bptr;
|
413 |
|
414 |
bptr = (char *)malloc(strlen(str)+1); |
415 |
strcpy(bptr, str); |
416 |
|
417 |
return bptr;
|
418 |
} |
419 |
#endif
|
420 |
|
421 |
#if 0
|
422 |
void
|
423 |
snooze_hup(num)
|
424 |
int num;
|
425 |
{
|
426 |
int s, ret;
|
427 |
#ifndef NO_UNIX_SOCKETS
|
428 |
struct sockaddr_un sock_un;
|
429 |
#endif
|
430 |
struct sockaddr_in sock_in;
|
431 |
char buff[256]; |
432 |
|
433 |
ret = -1;
|
434 |
if (slirp_socket_passwd) {
|
435 |
s = socket(AF_INET, SOCK_STREAM, 0);
|
436 |
if (s < 0) |
437 |
slirp_exit(1);
|
438 |
sock_in.sin_family = AF_INET; |
439 |
sock_in.sin_addr.s_addr = slirp_socket_addr; |
440 |
sock_in.sin_port = htons(slirp_socket_port); |
441 |
if (connect(s, (struct sockaddr *)&sock_in, sizeof(sock_in)) != 0) |
442 |
slirp_exit(1); /* just exit...*/ |
443 |
sprintf(buff, "kill %s:%d", slirp_socket_passwd, slirp_socket_unit);
|
444 |
write(s, buff, strlen(buff)+1);
|
445 |
} |
446 |
#ifndef NO_UNIX_SOCKETS
|
447 |
else {
|
448 |
s = socket(AF_UNIX, SOCK_STREAM, 0);
|
449 |
if (s < 0) |
450 |
slirp_exit(1);
|
451 |
sock_un.sun_family = AF_UNIX; |
452 |
strcpy(sock_un.sun_path, socket_path); |
453 |
if (connect(s, (struct sockaddr *)&sock_un, |
454 |
sizeof(sock_un.sun_family) + sizeof(sock_un.sun_path)) != 0) |
455 |
slirp_exit(1);
|
456 |
sprintf(buff, "kill none:%d", slirp_socket_unit);
|
457 |
write(s, buff, strlen(buff)+1);
|
458 |
} |
459 |
#endif
|
460 |
slirp_exit(0);
|
461 |
} |
462 |
|
463 |
|
464 |
void
|
465 |
snooze() |
466 |
{ |
467 |
sigset_t s; |
468 |
int i;
|
469 |
|
470 |
/* Don't need our data anymore */
|
471 |
/* XXX This makes SunOS barf */
|
472 |
/* brk(0); */
|
473 |
|
474 |
/* Close all fd's */
|
475 |
for (i = 255; i >= 0; i--) |
476 |
close(i); |
477 |
|
478 |
signal(SIGQUIT, slirp_exit); |
479 |
signal(SIGHUP, snooze_hup); |
480 |
sigemptyset(&s); |
481 |
|
482 |
/* Wait for any signal */
|
483 |
sigsuspend(&s); |
484 |
|
485 |
/* Just in case ... */
|
486 |
exit(255);
|
487 |
} |
488 |
|
489 |
void
|
490 |
relay(s) |
491 |
int s;
|
492 |
{ |
493 |
char buf[8192]; |
494 |
int n;
|
495 |
fd_set readfds; |
496 |
struct ttys *ttyp;
|
497 |
|
498 |
/* Don't need our data anymore */
|
499 |
/* XXX This makes SunOS barf */
|
500 |
/* brk(0); */
|
501 |
|
502 |
signal(SIGQUIT, slirp_exit); |
503 |
signal(SIGHUP, slirp_exit); |
504 |
signal(SIGINT, slirp_exit); |
505 |
signal(SIGTERM, slirp_exit); |
506 |
|
507 |
/* Fudge to get term_raw and term_restore to work */
|
508 |
if (NULL == (ttyp = tty_attach (0, slirp_tty))) { |
509 |
lprint ("Error: tty_attach failed in misc.c:relay()\r\n");
|
510 |
slirp_exit (1);
|
511 |
} |
512 |
ttyp->fd = 0;
|
513 |
ttyp->flags |= TTY_CTTY; |
514 |
term_raw(ttyp); |
515 |
|
516 |
while (1) { |
517 |
FD_ZERO(&readfds); |
518 |
|
519 |
FD_SET(0, &readfds);
|
520 |
FD_SET(s, &readfds); |
521 |
|
522 |
n = select(s+1, &readfds, (fd_set *)0, (fd_set *)0, (struct timeval *)0); |
523 |
|
524 |
if (n <= 0) |
525 |
slirp_exit(0);
|
526 |
|
527 |
if (FD_ISSET(0, &readfds)) { |
528 |
n = read(0, buf, 8192); |
529 |
if (n <= 0) |
530 |
slirp_exit(0);
|
531 |
n = writen(s, buf, n); |
532 |
if (n <= 0) |
533 |
slirp_exit(0);
|
534 |
} |
535 |
|
536 |
if (FD_ISSET(s, &readfds)) {
|
537 |
n = read(s, buf, 8192);
|
538 |
if (n <= 0) |
539 |
slirp_exit(0);
|
540 |
n = writen(0, buf, n);
|
541 |
if (n <= 0) |
542 |
slirp_exit(0);
|
543 |
} |
544 |
} |
545 |
|
546 |
/* Just in case.... */
|
547 |
exit(1);
|
548 |
} |
549 |
#endif
|
550 |
|
551 |
#ifdef CONFIG_QEMU
|
552 |
#include "monitor.h" |
553 |
|
554 |
void lprint(const char *format, ...) |
555 |
{ |
556 |
va_list args; |
557 |
|
558 |
va_start(args, format); |
559 |
monitor_vprintf(cur_mon, format, args); |
560 |
va_end(args); |
561 |
} |
562 |
#else
|
563 |
int (*lprint_print) _P((void *, const char *, va_list)); |
564 |
char *lprint_ptr, *lprint_ptr2, **lprint_arg;
|
565 |
|
566 |
void
|
567 |
#ifdef __STDC__
|
568 |
lprint(const char *format, ...) |
569 |
#else
|
570 |
lprint(va_alist) va_dcl |
571 |
#endif
|
572 |
{ |
573 |
va_list args; |
574 |
|
575 |
#ifdef __STDC__
|
576 |
va_start(args, format); |
577 |
#else
|
578 |
char *format;
|
579 |
va_start(args); |
580 |
format = va_arg(args, char *);
|
581 |
#endif
|
582 |
#if 0
|
583 |
/* If we're printing to an sbuf, make sure there's enough room */
|
584 |
/* XXX +100? */
|
585 |
if (lprint_sb) {
|
586 |
if ((lprint_ptr - lprint_sb->sb_wptr) >=
|
587 |
(lprint_sb->sb_datalen - (strlen(format) + 100))) {
|
588 |
int deltaw = lprint_sb->sb_wptr - lprint_sb->sb_data;
|
589 |
int deltar = lprint_sb->sb_rptr - lprint_sb->sb_data;
|
590 |
int deltap = lprint_ptr - lprint_sb->sb_data;
|
591 |
|
592 |
lprint_sb->sb_data = (char *)realloc(lprint_sb->sb_data,
|
593 |
lprint_sb->sb_datalen + TCP_SNDSPACE);
|
594 |
|
595 |
/* Adjust all values */
|
596 |
lprint_sb->sb_wptr = lprint_sb->sb_data + deltaw;
|
597 |
lprint_sb->sb_rptr = lprint_sb->sb_data + deltar;
|
598 |
lprint_ptr = lprint_sb->sb_data + deltap;
|
599 |
|
600 |
lprint_sb->sb_datalen += TCP_SNDSPACE;
|
601 |
}
|
602 |
}
|
603 |
#endif
|
604 |
if (lprint_print)
|
605 |
lprint_ptr += (*lprint_print)(*lprint_arg, format, args); |
606 |
|
607 |
/* Check if they want output to be logged to file as well */
|
608 |
if (lfd) {
|
609 |
/*
|
610 |
* Remove \r's
|
611 |
* otherwise you'll get ^M all over the file
|
612 |
*/
|
613 |
int len = strlen(format);
|
614 |
char *bptr1, *bptr2;
|
615 |
|
616 |
bptr1 = bptr2 = strdup(format); |
617 |
|
618 |
while (len--) {
|
619 |
if (*bptr1 == '\r') |
620 |
memcpy(bptr1, bptr1+1, len+1); |
621 |
else
|
622 |
bptr1++; |
623 |
} |
624 |
vfprintf(lfd, bptr2, args); |
625 |
free(bptr2); |
626 |
} |
627 |
va_end(args); |
628 |
} |
629 |
|
630 |
void
|
631 |
add_emu(buff) |
632 |
char *buff;
|
633 |
{ |
634 |
u_int lport, fport; |
635 |
u_int8_t tos = 0, emu = 0; |
636 |
char buff1[256], buff2[256], buff4[128]; |
637 |
char *buff3 = buff4;
|
638 |
struct emu_t *emup;
|
639 |
struct socket *so;
|
640 |
|
641 |
if (sscanf(buff, "%256s %256s", buff2, buff1) != 2) { |
642 |
lprint("Error: Bad arguments\r\n");
|
643 |
return;
|
644 |
} |
645 |
|
646 |
if (sscanf(buff1, "%d:%d", &lport, &fport) != 2) { |
647 |
lport = 0;
|
648 |
if (sscanf(buff1, "%d", &fport) != 1) { |
649 |
lprint("Error: Bad first argument\r\n");
|
650 |
return;
|
651 |
} |
652 |
} |
653 |
|
654 |
if (sscanf(buff2, "%128[^:]:%128s", buff1, buff3) != 2) { |
655 |
buff3 = 0;
|
656 |
if (sscanf(buff2, "%256s", buff1) != 1) { |
657 |
lprint("Error: Bad second argument\r\n");
|
658 |
return;
|
659 |
} |
660 |
} |
661 |
|
662 |
if (buff3) {
|
663 |
if (strcmp(buff3, "lowdelay") == 0) |
664 |
tos = IPTOS_LOWDELAY; |
665 |
else if (strcmp(buff3, "throughput") == 0) |
666 |
tos = IPTOS_THROUGHPUT; |
667 |
else {
|
668 |
lprint("Error: Expecting \"lowdelay\"/\"throughput\"\r\n");
|
669 |
return;
|
670 |
} |
671 |
} |
672 |
|
673 |
if (strcmp(buff1, "ftp") == 0) |
674 |
emu = EMU_FTP; |
675 |
else if (strcmp(buff1, "irc") == 0) |
676 |
emu = EMU_IRC; |
677 |
else if (strcmp(buff1, "none") == 0) |
678 |
emu = EMU_NONE; /* ie: no emulation */
|
679 |
else {
|
680 |
lprint("Error: Unknown service\r\n");
|
681 |
return;
|
682 |
} |
683 |
|
684 |
/* First, check that it isn't already emulated */
|
685 |
for (emup = tcpemu; emup; emup = emup->next) {
|
686 |
if (emup->lport == lport && emup->fport == fport) {
|
687 |
lprint("Error: port already emulated\r\n");
|
688 |
return;
|
689 |
} |
690 |
} |
691 |
|
692 |
/* link it */
|
693 |
emup = (struct emu_t *)malloc(sizeof (struct emu_t)); |
694 |
emup->lport = (u_int16_t)lport; |
695 |
emup->fport = (u_int16_t)fport; |
696 |
emup->tos = tos; |
697 |
emup->emu = emu; |
698 |
emup->next = tcpemu; |
699 |
tcpemu = emup; |
700 |
|
701 |
/* And finally, mark all current sessions, if any, as being emulated */
|
702 |
for (so = tcb.so_next; so != &tcb; so = so->so_next) {
|
703 |
if ((lport && lport == ntohs(so->so_lport)) ||
|
704 |
(fport && fport == ntohs(so->so_fport))) { |
705 |
if (emu)
|
706 |
so->so_emu = emu; |
707 |
if (tos)
|
708 |
so->so_iptos = tos; |
709 |
} |
710 |
} |
711 |
|
712 |
lprint("Adding emulation for %s to port %d/%d\r\n", buff1, emup->lport, emup->fport);
|
713 |
} |
714 |
#endif
|
715 |
|
716 |
#ifdef BAD_SPRINTF
|
717 |
|
718 |
#undef vsprintf
|
719 |
#undef sprintf
|
720 |
|
721 |
/*
|
722 |
* Some BSD-derived systems have a sprintf which returns char *
|
723 |
*/
|
724 |
|
725 |
int
|
726 |
vsprintf_len(string, format, args) |
727 |
char *string;
|
728 |
const char *format; |
729 |
va_list args; |
730 |
{ |
731 |
vsprintf(string, format, args); |
732 |
return strlen(string);
|
733 |
} |
734 |
|
735 |
int
|
736 |
#ifdef __STDC__
|
737 |
sprintf_len(char *string, const char *format, ...) |
738 |
#else
|
739 |
sprintf_len(va_alist) va_dcl |
740 |
#endif
|
741 |
{ |
742 |
va_list args; |
743 |
#ifdef __STDC__
|
744 |
va_start(args, format); |
745 |
#else
|
746 |
char *string;
|
747 |
char *format;
|
748 |
va_start(args); |
749 |
string = va_arg(args, char *);
|
750 |
format = va_arg(args, char *);
|
751 |
#endif
|
752 |
vsprintf(string, format, args); |
753 |
return strlen(string);
|
754 |
} |
755 |
|
756 |
#endif
|
757 |
|
758 |
void
|
759 |
u_sleep(int usec)
|
760 |
{ |
761 |
struct timeval t;
|
762 |
fd_set fdset; |
763 |
|
764 |
FD_ZERO(&fdset); |
765 |
|
766 |
t.tv_sec = 0;
|
767 |
t.tv_usec = usec * 1000;
|
768 |
|
769 |
select(0, &fdset, &fdset, &fdset, &t);
|
770 |
} |
771 |
|
772 |
/*
|
773 |
* Set fd blocking and non-blocking
|
774 |
*/
|
775 |
|
776 |
void
|
777 |
fd_nonblock(int fd)
|
778 |
{ |
779 |
#ifdef FIONBIO
|
780 |
#ifdef _WIN32
|
781 |
long opt = 1; |
782 |
#else
|
783 |
int opt = 1; |
784 |
#endif
|
785 |
|
786 |
ioctlsocket(fd, FIONBIO, &opt); |
787 |
#else
|
788 |
int opt;
|
789 |
|
790 |
opt = fcntl(fd, F_GETFL, 0);
|
791 |
opt |= O_NONBLOCK; |
792 |
fcntl(fd, F_SETFL, opt); |
793 |
#endif
|
794 |
} |
795 |
|
796 |
void
|
797 |
fd_block(int fd)
|
798 |
{ |
799 |
#ifdef FIONBIO
|
800 |
int opt = 0; |
801 |
|
802 |
ioctlsocket(fd, FIONBIO, &opt); |
803 |
#else
|
804 |
int opt;
|
805 |
|
806 |
opt = fcntl(fd, F_GETFL, 0);
|
807 |
opt &= ~O_NONBLOCK; |
808 |
fcntl(fd, F_SETFL, opt); |
809 |
#endif
|
810 |
} |
811 |
|
812 |
|
813 |
#if 0
|
814 |
/*
|
815 |
* invoke RSH
|
816 |
*/
|
817 |
int
|
818 |
rsh_exec(so,ns, user, host, args)
|
819 |
struct socket *so;
|
820 |
struct socket *ns;
|
821 |
char *user;
|
822 |
char *host;
|
823 |
char *args;
|
824 |
{
|
825 |
int fd[2];
|
826 |
int fd0[2];
|
827 |
int s;
|
828 |
char buff[256];
|
829 |
|
830 |
DEBUG_CALL("rsh_exec");
|
831 |
DEBUG_ARG("so = %lx", (long)so);
|
832 |
|
833 |
if (pipe(fd)<0) {
|
834 |
lprint("Error: pipe failed: %s\n", strerror(errno));
|
835 |
return 0;
|
836 |
}
|
837 |
/* #ifdef HAVE_SOCKETPAIR */
|
838 |
#if 1
|
839 |
if (socketpair(PF_UNIX,SOCK_STREAM,0, fd0) == -1) {
|
840 |
close(fd[0]);
|
841 |
close(fd[1]);
|
842 |
lprint("Error: openpty failed: %s\n", strerror(errno));
|
843 |
return 0;
|
844 |
}
|
845 |
#else
|
846 |
if (slirp_openpty(&fd0[0], &fd0[1]) == -1) { |
847 |
close(fd[0]);
|
848 |
close(fd[1]);
|
849 |
lprint("Error: openpty failed: %s\n", strerror(errno));
|
850 |
return 0; |
851 |
} |
852 |
#endif
|
853 |
|
854 |
switch(fork()) {
|
855 |
case -1: |
856 |
lprint("Error: fork failed: %s\n", strerror(errno));
|
857 |
close(fd[0]);
|
858 |
close(fd[1]);
|
859 |
close(fd0[0]);
|
860 |
close(fd0[1]);
|
861 |
return 0; |
862 |
|
863 |
case 0: |
864 |
close(fd[0]);
|
865 |
close(fd0[0]);
|
866 |
|
867 |
/* Set the DISPLAY */
|
868 |
if (x_port >= 0) { |
869 |
#ifdef HAVE_SETENV
|
870 |
sprintf(buff, "%s:%d.%d", inet_ntoa(our_addr), x_port, x_screen);
|
871 |
setenv("DISPLAY", buff, 1); |
872 |
#else
|
873 |
sprintf(buff, "DISPLAY=%s:%d.%d", inet_ntoa(our_addr), x_port, x_screen);
|
874 |
putenv(buff); |
875 |
#endif
|
876 |
} |
877 |
|
878 |
dup2(fd0[1], 0); |
879 |
dup2(fd0[1], 1); |
880 |
dup2(fd[1], 2); |
881 |
for (s = 3; s <= 255; s++) |
882 |
close(s); |
883 |
|
884 |
execlp("rsh","rsh","-l", user, host, args, NULL); |
885 |
|
886 |
/* Ooops, failed, let's tell the user why */
|
887 |
|
888 |
sprintf(buff, "Error: execlp of %s failed: %s\n",
|
889 |
"rsh", strerror(errno));
|
890 |
write(2, buff, strlen(buff)+1); |
891 |
close(0); close(1); close(2); /* XXX */ |
892 |
exit(1);
|
893 |
|
894 |
default:
|
895 |
close(fd[1]);
|
896 |
close(fd0[1]);
|
897 |
ns->s=fd[0];
|
898 |
so->s=fd0[0];
|
899 |
|
900 |
return 1; |
901 |
} |
902 |
} |
903 |
#endif
|