root / slirp / misc.c @ a35f3ec7
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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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|
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#define WANT_SYS_IOCTL_H
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#include <slirp.h> |
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|
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u_int curtime, time_fasttimo, last_slowtimo; |
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|
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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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|
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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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#ifndef HAVE_INET_ATON
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int
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inet_aton(cp, ia) |
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const char *cp; |
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struct in_addr *ia;
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{
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u_int32_t addr = inet_addr(cp); |
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if (addr == 0xffffffff) |
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return 0; |
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ia->s_addr = addr; |
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return 1; |
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} |
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#endif
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|
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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() |
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{
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char buff[256]; |
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struct hostent *he = NULL; |
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|
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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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|
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#if SIZEOF_CHAR_P == 8 |
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|
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struct quehead_32 {
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u_int32_t qh_link; |
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u_int32_t qh_rlink; |
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}; |
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inline void |
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insque_32(a, b) |
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void *a;
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void *b;
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{
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register struct quehead_32 *element = (struct quehead_32 *) a; |
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register struct quehead_32 *head = (struct quehead_32 *) b; |
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element->qh_link = head->qh_link; |
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head->qh_link = (u_int32_t)element; |
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element->qh_rlink = (u_int32_t)head; |
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((struct quehead_32 *)(element->qh_link))->qh_rlink
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= (u_int32_t)element; |
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} |
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inline void |
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remque_32(a) |
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void *a;
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{
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register struct quehead_32 *element = (struct quehead_32 *) a; |
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((struct quehead_32 *)(element->qh_link))->qh_rlink = element->qh_rlink;
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((struct quehead_32 *)(element->qh_rlink))->qh_link = element->qh_link;
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element->qh_rlink = 0;
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} |
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#endif /* SIZEOF_CHAR_P == 8 */ |
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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(a, b) |
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void *a, *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(a) |
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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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|
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/* #endif */
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int
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add_exec(ex_ptr, do_pty, exec, addr, port) |
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struct ex_list **ex_ptr;
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int do_pty;
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char *exec;
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int addr;
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int port;
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{
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struct ex_list *tmp_ptr;
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|
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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 = 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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|
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#ifndef HAVE_STRERROR
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|
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/*
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* For systems with no strerror
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*/
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|
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extern int sys_nerr; |
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extern char *sys_errlist[]; |
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|
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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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|
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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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|
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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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|
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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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#else
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|
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static char line[] = "/dev/ptyXX"; |
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register const char *cp1, *cp2; |
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|
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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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/*
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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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int addrlen = sizeof(addr); |
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int opt;
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int master = -1; |
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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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|
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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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|
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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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|
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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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|
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return 0; |
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} |
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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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|
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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 */ |
| 361 |
(void) setsid();
|
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ioctl(s, TIOCSCTTY, (char *)NULL); |
| 363 |
#endif
|
| 364 |
} 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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*/
|
| 371 |
s = socket(AF_INET, SOCK_STREAM, 0);
|
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addr.sin_addr = loopback_addr; |
| 373 |
do {
|
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ret = connect(s, (struct sockaddr *)&addr, addrlen);
|
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} while (ret < 0 && errno == EINTR); |
| 376 |
} |
| 377 |
|
| 378 |
#if 0
|
| 379 |
if (x_port >= 0) {
|
| 380 |
#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
|
| 384 |
sprintf(buff, "DISPLAY=%s:%d.%d", inet_ntoa(our_addr), x_port, x_screen);
|
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putenv(buff); |
| 386 |
#endif
|
| 387 |
} |
| 388 |
#endif
|
| 389 |
dup2(s, 0);
|
| 390 |
dup2(s, 1);
|
| 391 |
dup2(s, 2);
|
| 392 |
for (s = getdtablesize() - 1; s >= 3; s--) |
| 393 |
close(s); |
| 394 |
|
| 395 |
i = 0;
|
| 396 |
bptr = strdup(ex); /* No need to free() this */
|
| 397 |
if (do_pty == 1) { |
| 398 |
/* Setup "slirp.telnetd -x" */
|
| 399 |
argv[i++] = "slirp.telnetd";
|
| 400 |
argv[i++] = "-x";
|
| 401 |
argv[i++] = bptr; |
| 402 |
} else
|
| 403 |
do {
|
| 404 |
/* Change the string into argv[] */
|
| 405 |
curarg = bptr; |
| 406 |
while (*bptr != ' ' && *bptr != (char)0) |
| 407 |
bptr++; |
| 408 |
c = *bptr; |
| 409 |
*bptr++ = (char)0; |
| 410 |
argv[i++] = strdup(curarg); |
| 411 |
} while (c);
|
| 412 |
|
| 413 |
argv[i] = 0;
|
| 414 |
execvp(argv[0], argv);
|
| 415 |
|
| 416 |
/* Ooops, failed, let's tell the user why */
|
| 417 |
{
|
| 418 |
char buff[256]; |
| 419 |
|
| 420 |
sprintf(buff, "Error: execvp of %s failed: %s\n",
|
| 421 |
argv[0], strerror(errno));
|
| 422 |
write(2, buff, strlen(buff)+1); |
| 423 |
} |
| 424 |
close(0); close(1); close(2); /* XXX */ |
| 425 |
exit(1);
|
| 426 |
|
| 427 |
default:
|
| 428 |
if (do_pty == 2) { |
| 429 |
close(s); |
| 430 |
so->s = master; |
| 431 |
} else {
|
| 432 |
/*
|
| 433 |
* XXX this could block us...
|
| 434 |
* XXX Should set a timer here, and if accept() doesn't
|
| 435 |
* return after X seconds, declare it a failure
|
| 436 |
* The only reason this will block forever is if socket()
|
| 437 |
* of connect() fail in the child process
|
| 438 |
*/
|
| 439 |
do {
|
| 440 |
so->s = accept(s, (struct sockaddr *)&addr, &addrlen);
|
| 441 |
} while (so->s < 0 && errno == EINTR); |
| 442 |
closesocket(s); |
| 443 |
opt = 1;
|
| 444 |
setsockopt(so->s,SOL_SOCKET,SO_REUSEADDR,(char *)&opt,sizeof(int)); |
| 445 |
opt = 1;
|
| 446 |
setsockopt(so->s,SOL_SOCKET,SO_OOBINLINE,(char *)&opt,sizeof(int)); |
| 447 |
} |
| 448 |
fd_nonblock(so->s); |
| 449 |
|
| 450 |
/* Append the telnet options now */
|
| 451 |
if (so->so_m != 0 && do_pty == 1) { |
| 452 |
sbappend(so, so->so_m); |
| 453 |
so->so_m = 0;
|
| 454 |
} |
| 455 |
|
| 456 |
return 1; |
| 457 |
} |
| 458 |
} |
| 459 |
#endif
|
| 460 |
|
| 461 |
#ifndef HAVE_STRDUP
|
| 462 |
char *
|
| 463 |
strdup(str) |
| 464 |
const char *str; |
| 465 |
{
|
| 466 |
char *bptr;
|
| 467 |
|
| 468 |
bptr = (char *)malloc(strlen(str)+1); |
| 469 |
strcpy(bptr, str); |
| 470 |
|
| 471 |
return bptr;
|
| 472 |
} |
| 473 |
#endif
|
| 474 |
|
| 475 |
#if 0
|
| 476 |
void
|
| 477 |
snooze_hup(num)
|
| 478 |
int num;
|
| 479 |
{
|
| 480 |
int s, ret;
|
| 481 |
#ifndef NO_UNIX_SOCKETS
|
| 482 |
struct sockaddr_un sock_un;
|
| 483 |
#endif
|
| 484 |
struct sockaddr_in sock_in;
|
| 485 |
char buff[256]; |
| 486 |
|
| 487 |
ret = -1;
|
| 488 |
if (slirp_socket_passwd) {
|
| 489 |
s = socket(AF_INET, SOCK_STREAM, 0);
|
| 490 |
if (s < 0) |
| 491 |
slirp_exit(1);
|
| 492 |
sock_in.sin_family = AF_INET; |
| 493 |
sock_in.sin_addr.s_addr = slirp_socket_addr; |
| 494 |
sock_in.sin_port = htons(slirp_socket_port); |
| 495 |
if (connect(s, (struct sockaddr *)&sock_in, sizeof(sock_in)) != 0) |
| 496 |
slirp_exit(1); /* just exit...*/ |
| 497 |
sprintf(buff, "kill %s:%d", slirp_socket_passwd, slirp_socket_unit);
|
| 498 |
write(s, buff, strlen(buff)+1);
|
| 499 |
} |
| 500 |
#ifndef NO_UNIX_SOCKETS
|
| 501 |
else {
|
| 502 |
s = socket(AF_UNIX, SOCK_STREAM, 0);
|
| 503 |
if (s < 0) |
| 504 |
slirp_exit(1);
|
| 505 |
sock_un.sun_family = AF_UNIX; |
| 506 |
strcpy(sock_un.sun_path, socket_path); |
| 507 |
if (connect(s, (struct sockaddr *)&sock_un, |
| 508 |
sizeof(sock_un.sun_family) + sizeof(sock_un.sun_path)) != 0) |
| 509 |
slirp_exit(1);
|
| 510 |
sprintf(buff, "kill none:%d", slirp_socket_unit);
|
| 511 |
write(s, buff, strlen(buff)+1);
|
| 512 |
} |
| 513 |
#endif
|
| 514 |
slirp_exit(0);
|
| 515 |
} |
| 516 |
|
| 517 |
|
| 518 |
void
|
| 519 |
snooze() |
| 520 |
{
|
| 521 |
sigset_t s; |
| 522 |
int i;
|
| 523 |
|
| 524 |
/* Don't need our data anymore */
|
| 525 |
/* XXX This makes SunOS barf */
|
| 526 |
/* brk(0); */
|
| 527 |
|
| 528 |
/* Close all fd's */
|
| 529 |
for (i = 255; i >= 0; i--) |
| 530 |
close(i); |
| 531 |
|
| 532 |
signal(SIGQUIT, slirp_exit); |
| 533 |
signal(SIGHUP, snooze_hup); |
| 534 |
sigemptyset(&s); |
| 535 |
|
| 536 |
/* Wait for any signal */
|
| 537 |
sigsuspend(&s); |
| 538 |
|
| 539 |
/* Just in case ... */
|
| 540 |
exit(255);
|
| 541 |
} |
| 542 |
|
| 543 |
void
|
| 544 |
relay(s) |
| 545 |
int s;
|
| 546 |
{
|
| 547 |
char buf[8192]; |
| 548 |
int n;
|
| 549 |
fd_set readfds; |
| 550 |
struct ttys *ttyp;
|
| 551 |
|
| 552 |
/* Don't need our data anymore */
|
| 553 |
/* XXX This makes SunOS barf */
|
| 554 |
/* brk(0); */
|
| 555 |
|
| 556 |
signal(SIGQUIT, slirp_exit); |
| 557 |
signal(SIGHUP, slirp_exit); |
| 558 |
signal(SIGINT, slirp_exit); |
| 559 |
signal(SIGTERM, slirp_exit); |
| 560 |
|
| 561 |
/* Fudge to get term_raw and term_restore to work */
|
| 562 |
if (NULL == (ttyp = tty_attach (0, slirp_tty))) { |
| 563 |
lprint ("Error: tty_attach failed in misc.c:relay()\r\n");
|
| 564 |
slirp_exit (1);
|
| 565 |
} |
| 566 |
ttyp->fd = 0;
|
| 567 |
ttyp->flags |= TTY_CTTY; |
| 568 |
term_raw(ttyp); |
| 569 |
|
| 570 |
while (1) { |
| 571 |
FD_ZERO(&readfds); |
| 572 |
|
| 573 |
FD_SET(0, &readfds);
|
| 574 |
FD_SET(s, &readfds); |
| 575 |
|
| 576 |
n = select(s+1, &readfds, (fd_set *)0, (fd_set *)0, (struct timeval *)0); |
| 577 |
|
| 578 |
if (n <= 0) |
| 579 |
slirp_exit(0);
|
| 580 |
|
| 581 |
if (FD_ISSET(0, &readfds)) { |
| 582 |
n = read(0, buf, 8192); |
| 583 |
if (n <= 0) |
| 584 |
slirp_exit(0);
|
| 585 |
n = writen(s, buf, n); |
| 586 |
if (n <= 0) |
| 587 |
slirp_exit(0);
|
| 588 |
} |
| 589 |
|
| 590 |
if (FD_ISSET(s, &readfds)) {
|
| 591 |
n = read(s, buf, 8192);
|
| 592 |
if (n <= 0) |
| 593 |
slirp_exit(0);
|
| 594 |
n = writen(0, buf, n);
|
| 595 |
if (n <= 0) |
| 596 |
slirp_exit(0);
|
| 597 |
} |
| 598 |
} |
| 599 |
|
| 600 |
/* Just in case.... */
|
| 601 |
exit(1);
|
| 602 |
} |
| 603 |
#endif
|
| 604 |
|
| 605 |
#ifdef CONFIG_QEMU
|
| 606 |
extern void term_vprintf(const char *fmt, va_list ap); |
| 607 |
|
| 608 |
void lprint(const char *format, ...) |
| 609 |
{
|
| 610 |
va_list args; |
| 611 |
|
| 612 |
va_start(args, format); |
| 613 |
term_vprintf(format, args); |
| 614 |
va_end(args); |
| 615 |
} |
| 616 |
#else
|
| 617 |
int (*lprint_print) _P((void *, const char *, va_list)); |
| 618 |
char *lprint_ptr, *lprint_ptr2, **lprint_arg;
|
| 619 |
|
| 620 |
void
|
| 621 |
#ifdef __STDC__
|
| 622 |
lprint(const char *format, ...) |
| 623 |
#else
|
| 624 |
lprint(va_alist) va_dcl |
| 625 |
#endif
|
| 626 |
{
|
| 627 |
va_list args; |
| 628 |
|
| 629 |
#ifdef __STDC__
|
| 630 |
va_start(args, format); |
| 631 |
#else
|
| 632 |
char *format;
|
| 633 |
va_start(args); |
| 634 |
format = va_arg(args, char *);
|
| 635 |
#endif
|
| 636 |
#if 0
|
| 637 |
/* If we're printing to an sbuf, make sure there's enough room */
|
| 638 |
/* XXX +100? */
|
| 639 |
if (lprint_sb) {
|
| 640 |
if ((lprint_ptr - lprint_sb->sb_wptr) >=
|
| 641 |
(lprint_sb->sb_datalen - (strlen(format) + 100))) {
|
| 642 |
int deltaw = lprint_sb->sb_wptr - lprint_sb->sb_data;
|
| 643 |
int deltar = lprint_sb->sb_rptr - lprint_sb->sb_data;
|
| 644 |
int deltap = lprint_ptr - lprint_sb->sb_data;
|
| 645 |
|
| 646 |
lprint_sb->sb_data = (char *)realloc(lprint_sb->sb_data,
|
| 647 |
lprint_sb->sb_datalen + TCP_SNDSPACE);
|
| 648 |
|
| 649 |
/* Adjust all values */
|
| 650 |
lprint_sb->sb_wptr = lprint_sb->sb_data + deltaw;
|
| 651 |
lprint_sb->sb_rptr = lprint_sb->sb_data + deltar;
|
| 652 |
lprint_ptr = lprint_sb->sb_data + deltap;
|
| 653 |
|
| 654 |
lprint_sb->sb_datalen += TCP_SNDSPACE;
|
| 655 |
}
|
| 656 |
}
|
| 657 |
#endif
|
| 658 |
if (lprint_print)
|
| 659 |
lprint_ptr += (*lprint_print)(*lprint_arg, format, args); |
| 660 |
|
| 661 |
/* Check if they want output to be logged to file as well */
|
| 662 |
if (lfd) {
|
| 663 |
/*
|
| 664 |
* Remove \r's
|
| 665 |
* otherwise you'll get ^M all over the file
|
| 666 |
*/
|
| 667 |
int len = strlen(format);
|
| 668 |
char *bptr1, *bptr2;
|
| 669 |
|
| 670 |
bptr1 = bptr2 = strdup(format); |
| 671 |
|
| 672 |
while (len--) {
|
| 673 |
if (*bptr1 == '\r') |
| 674 |
memcpy(bptr1, bptr1+1, len+1); |
| 675 |
else
|
| 676 |
bptr1++; |
| 677 |
} |
| 678 |
vfprintf(lfd, bptr2, args); |
| 679 |
free(bptr2); |
| 680 |
} |
| 681 |
va_end(args); |
| 682 |
} |
| 683 |
|
| 684 |
void
|
| 685 |
add_emu(buff) |
| 686 |
char *buff;
|
| 687 |
{
|
| 688 |
u_int lport, fport; |
| 689 |
u_int8_t tos = 0, emu = 0; |
| 690 |
char buff1[256], buff2[256], buff4[128]; |
| 691 |
char *buff3 = buff4;
|
| 692 |
struct emu_t *emup;
|
| 693 |
struct socket *so;
|
| 694 |
|
| 695 |
if (sscanf(buff, "%256s %256s", buff2, buff1) != 2) { |
| 696 |
lprint("Error: Bad arguments\r\n");
|
| 697 |
return;
|
| 698 |
} |
| 699 |
|
| 700 |
if (sscanf(buff1, "%d:%d", &lport, &fport) != 2) { |
| 701 |
lport = 0;
|
| 702 |
if (sscanf(buff1, "%d", &fport) != 1) { |
| 703 |
lprint("Error: Bad first argument\r\n");
|
| 704 |
return;
|
| 705 |
} |
| 706 |
} |
| 707 |
|
| 708 |
if (sscanf(buff2, "%128[^:]:%128s", buff1, buff3) != 2) { |
| 709 |
buff3 = 0;
|
| 710 |
if (sscanf(buff2, "%256s", buff1) != 1) { |
| 711 |
lprint("Error: Bad second argument\r\n");
|
| 712 |
return;
|
| 713 |
} |
| 714 |
} |
| 715 |
|
| 716 |
if (buff3) {
|
| 717 |
if (strcmp(buff3, "lowdelay") == 0) |
| 718 |
tos = IPTOS_LOWDELAY; |
| 719 |
else if (strcmp(buff3, "throughput") == 0) |
| 720 |
tos = IPTOS_THROUGHPUT; |
| 721 |
else {
|
| 722 |
lprint("Error: Expecting \"lowdelay\"/\"throughput\"\r\n");
|
| 723 |
return;
|
| 724 |
} |
| 725 |
} |
| 726 |
|
| 727 |
if (strcmp(buff1, "ftp") == 0) |
| 728 |
emu = EMU_FTP; |
| 729 |
else if (strcmp(buff1, "irc") == 0) |
| 730 |
emu = EMU_IRC; |
| 731 |
else if (strcmp(buff1, "none") == 0) |
| 732 |
emu = EMU_NONE; /* ie: no emulation */
|
| 733 |
else {
|
| 734 |
lprint("Error: Unknown service\r\n");
|
| 735 |
return;
|
| 736 |
} |
| 737 |
|
| 738 |
/* First, check that it isn't already emulated */
|
| 739 |
for (emup = tcpemu; emup; emup = emup->next) {
|
| 740 |
if (emup->lport == lport && emup->fport == fport) {
|
| 741 |
lprint("Error: port already emulated\r\n");
|
| 742 |
return;
|
| 743 |
} |
| 744 |
} |
| 745 |
|
| 746 |
/* link it */
|
| 747 |
emup = (struct emu_t *)malloc(sizeof (struct emu_t)); |
| 748 |
emup->lport = (u_int16_t)lport; |
| 749 |
emup->fport = (u_int16_t)fport; |
| 750 |
emup->tos = tos; |
| 751 |
emup->emu = emu; |
| 752 |
emup->next = tcpemu; |
| 753 |
tcpemu = emup; |
| 754 |
|
| 755 |
/* And finally, mark all current sessions, if any, as being emulated */
|
| 756 |
for (so = tcb.so_next; so != &tcb; so = so->so_next) {
|
| 757 |
if ((lport && lport == ntohs(so->so_lport)) ||
|
| 758 |
(fport && fport == ntohs(so->so_fport))) {
|
| 759 |
if (emu)
|
| 760 |
so->so_emu = emu; |
| 761 |
if (tos)
|
| 762 |
so->so_iptos = tos; |
| 763 |
} |
| 764 |
} |
| 765 |
|
| 766 |
lprint("Adding emulation for %s to port %d/%d\r\n", buff1, emup->lport, emup->fport);
|
| 767 |
} |
| 768 |
#endif
|
| 769 |
|
| 770 |
#ifdef BAD_SPRINTF
|
| 771 |
|
| 772 |
#undef vsprintf
|
| 773 |
#undef sprintf
|
| 774 |
|
| 775 |
/*
|
| 776 |
* Some BSD-derived systems have a sprintf which returns char *
|
| 777 |
*/
|
| 778 |
|
| 779 |
int
|
| 780 |
vsprintf_len(string, format, args) |
| 781 |
char *string;
|
| 782 |
const char *format; |
| 783 |
va_list args; |
| 784 |
{
|
| 785 |
vsprintf(string, format, args); |
| 786 |
return strlen(string);
|
| 787 |
} |
| 788 |
|
| 789 |
int
|
| 790 |
#ifdef __STDC__
|
| 791 |
sprintf_len(char *string, const char *format, ...) |
| 792 |
#else
|
| 793 |
sprintf_len(va_alist) va_dcl |
| 794 |
#endif
|
| 795 |
{
|
| 796 |
va_list args; |
| 797 |
#ifdef __STDC__
|
| 798 |
va_start(args, format); |
| 799 |
#else
|
| 800 |
char *string;
|
| 801 |
char *format;
|
| 802 |
va_start(args); |
| 803 |
string = va_arg(args, char *);
|
| 804 |
format = va_arg(args, char *);
|
| 805 |
#endif
|
| 806 |
vsprintf(string, format, args); |
| 807 |
return strlen(string);
|
| 808 |
} |
| 809 |
|
| 810 |
#endif
|
| 811 |
|
| 812 |
void
|
| 813 |
u_sleep(usec) |
| 814 |
int usec;
|
| 815 |
{
|
| 816 |
struct timeval t;
|
| 817 |
fd_set fdset; |
| 818 |
|
| 819 |
FD_ZERO(&fdset); |
| 820 |
|
| 821 |
t.tv_sec = 0;
|
| 822 |
t.tv_usec = usec * 1000;
|
| 823 |
|
| 824 |
select(0, &fdset, &fdset, &fdset, &t);
|
| 825 |
} |
| 826 |
|
| 827 |
/*
|
| 828 |
* Set fd blocking and non-blocking
|
| 829 |
*/
|
| 830 |
|
| 831 |
void
|
| 832 |
fd_nonblock(fd) |
| 833 |
int fd;
|
| 834 |
{
|
| 835 |
#ifdef FIONBIO
|
| 836 |
int opt = 1; |
| 837 |
|
| 838 |
ioctlsocket(fd, FIONBIO, &opt); |
| 839 |
#else
|
| 840 |
int opt;
|
| 841 |
|
| 842 |
opt = fcntl(fd, F_GETFL, 0);
|
| 843 |
opt |= O_NONBLOCK; |
| 844 |
fcntl(fd, F_SETFL, opt); |
| 845 |
#endif
|
| 846 |
} |
| 847 |
|
| 848 |
void
|
| 849 |
fd_block(fd) |
| 850 |
int fd;
|
| 851 |
{
|
| 852 |
#ifdef FIONBIO
|
| 853 |
int opt = 0; |
| 854 |
|
| 855 |
ioctlsocket(fd, FIONBIO, &opt); |
| 856 |
#else
|
| 857 |
int opt;
|
| 858 |
|
| 859 |
opt = fcntl(fd, F_GETFL, 0);
|
| 860 |
opt &= ~O_NONBLOCK; |
| 861 |
fcntl(fd, F_SETFL, opt); |
| 862 |
#endif
|
| 863 |
} |
| 864 |
|
| 865 |
|
| 866 |
#if 0
|
| 867 |
/*
|
| 868 |
* invoke RSH
|
| 869 |
*/
|
| 870 |
int
|
| 871 |
rsh_exec(so,ns, user, host, args)
|
| 872 |
struct socket *so;
|
| 873 |
struct socket *ns;
|
| 874 |
char *user;
|
| 875 |
char *host;
|
| 876 |
char *args;
|
| 877 |
{
|
| 878 |
int fd[2];
|
| 879 |
int fd0[2];
|
| 880 |
int s;
|
| 881 |
char buff[256];
|
| 882 |
|
| 883 |
DEBUG_CALL("rsh_exec");
|
| 884 |
DEBUG_ARG("so = %lx", (long)so);
|
| 885 |
|
| 886 |
if (pipe(fd)<0) {
|
| 887 |
lprint("Error: pipe failed: %s\n", strerror(errno));
|
| 888 |
return 0;
|
| 889 |
}
|
| 890 |
/* #ifdef HAVE_SOCKETPAIR */
|
| 891 |
#if 1
|
| 892 |
if (socketpair(PF_UNIX,SOCK_STREAM,0, fd0) == -1) {
|
| 893 |
close(fd[0]);
|
| 894 |
close(fd[1]);
|
| 895 |
lprint("Error: openpty failed: %s\n", strerror(errno));
|
| 896 |
return 0;
|
| 897 |
}
|
| 898 |
#else
|
| 899 |
if (slirp_openpty(&fd0[0], &fd0[1]) == -1) { |
| 900 |
close(fd[0]);
|
| 901 |
close(fd[1]);
|
| 902 |
lprint("Error: openpty failed: %s\n", strerror(errno));
|
| 903 |
return 0; |
| 904 |
} |
| 905 |
#endif
|
| 906 |
|
| 907 |
switch(fork()) {
|
| 908 |
case -1: |
| 909 |
lprint("Error: fork failed: %s\n", strerror(errno));
|
| 910 |
close(fd[0]);
|
| 911 |
close(fd[1]);
|
| 912 |
close(fd0[0]);
|
| 913 |
close(fd0[1]);
|
| 914 |
return 0; |
| 915 |
|
| 916 |
case 0: |
| 917 |
close(fd[0]);
|
| 918 |
close(fd0[0]);
|
| 919 |
|
| 920 |
/* Set the DISPLAY */
|
| 921 |
if (x_port >= 0) { |
| 922 |
#ifdef HAVE_SETENV
|
| 923 |
sprintf(buff, "%s:%d.%d", inet_ntoa(our_addr), x_port, x_screen);
|
| 924 |
setenv("DISPLAY", buff, 1); |
| 925 |
#else
|
| 926 |
sprintf(buff, "DISPLAY=%s:%d.%d", inet_ntoa(our_addr), x_port, x_screen);
|
| 927 |
putenv(buff); |
| 928 |
#endif
|
| 929 |
} |
| 930 |
|
| 931 |
dup2(fd0[1], 0); |
| 932 |
dup2(fd0[1], 1); |
| 933 |
dup2(fd[1], 2); |
| 934 |
for (s = 3; s <= 255; s++) |
| 935 |
close(s); |
| 936 |
|
| 937 |
execlp("rsh","rsh","-l", user, host, args, NULL); |
| 938 |
|
| 939 |
/* Ooops, failed, let's tell the user why */
|
| 940 |
|
| 941 |
sprintf(buff, "Error: execlp of %s failed: %s\n",
|
| 942 |
"rsh", strerror(errno));
|
| 943 |
write(2, buff, strlen(buff)+1); |
| 944 |
close(0); close(1); close(2); /* XXX */ |
| 945 |
exit(1);
|
| 946 |
|
| 947 |
default:
|
| 948 |
close(fd[1]);
|
| 949 |
close(fd0[1]);
|
| 950 |
ns->s=fd[0];
|
| 951 |
so->s=fd0[0];
|
| 952 |
|
| 953 |
return 1; |
| 954 |
} |
| 955 |
} |
| 956 |
#endif
|