1 |
gbeauche |
1.1 |
/* |
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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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#define WANT_SYS_IOCTL_H |
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#include <slirp.h> |
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u_int curtime, time_fasttimo, last_slowtimo, detach_time; |
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u_int detach_wait = 600000; /* 10 minutes */ |
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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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#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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* 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; |
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if (gethostname(buff,256) < 0) |
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return; |
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if ((he = gethostbyname(buff)) == NULL) |
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return; |
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our_addr = *(struct in_addr *)he->h_addr; |
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} |
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#if SIZEOF_CHAR_P == 8 |
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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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gbeauche |
1.3 |
void |
141 |
gbeauche |
1.1 |
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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} |
152 |
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153 |
gbeauche |
1.3 |
void |
154 |
gbeauche |
1.1 |
remque(a) |
155 |
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void *a; |
156 |
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{ |
157 |
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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; |
161 |
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/* element->qh_link = NULL; TCP FIN1 crashes if you do this. Why ? */ |
162 |
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} |
163 |
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164 |
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/* #endif */ |
165 |
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166 |
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167 |
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int |
168 |
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add_exec(ex_ptr, do_pty, exec, addr, port) |
169 |
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struct ex_list **ex_ptr; |
170 |
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int do_pty; |
171 |
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char *exec; |
172 |
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int addr; |
173 |
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int port; |
174 |
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{ |
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struct ex_list *tmp_ptr; |
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177 |
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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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193 |
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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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199 |
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extern int sys_nerr; |
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extern char *sys_errlist[]; |
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202 |
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char * |
203 |
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strerror(error) |
204 |
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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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214 |
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215 |
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#ifdef _WIN32 |
216 |
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217 |
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int |
218 |
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fork_exec(so, ex, do_pty) |
219 |
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struct socket *so; |
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char *ex; |
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int do_pty; |
222 |
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{ |
223 |
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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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int |
230 |
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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; |
234 |
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#ifdef HAVE_GRANTPT |
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char *ptr; |
237 |
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238 |
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if ((master = open("/dev/ptmx", O_RDWR)) < 0 || |
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grantpt(master) < 0 || |
240 |
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unlockpt(master) < 0 || |
241 |
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(ptr = ptsname(master)) == NULL) { |
242 |
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close(master); |
243 |
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return -1; |
244 |
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} |
245 |
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246 |
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if ((slave = open(ptr, O_RDWR)) < 0 || |
247 |
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ioctl(slave, I_PUSH, "ptem") < 0 || |
248 |
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ioctl(slave, I_PUSH, "ldterm") < 0 || |
249 |
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ioctl(slave, I_PUSH, "ttcompat") < 0) { |
250 |
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close(master); |
251 |
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close(slave); |
252 |
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return -1; |
253 |
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} |
254 |
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255 |
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*amaster = master; |
256 |
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*aslave = slave; |
257 |
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return 0; |
258 |
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259 |
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#else |
260 |
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261 |
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static char line[] = "/dev/ptyXX"; |
262 |
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register const char *cp1, *cp2; |
263 |
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264 |
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for (cp1 = "pqrsPQRS"; *cp1; cp1++) { |
265 |
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line[8] = *cp1; |
266 |
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for (cp2 = "0123456789abcdefghijklmnopqrstuv"; *cp2; cp2++) { |
267 |
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line[9] = *cp2; |
268 |
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if ((master = open(line, O_RDWR, 0)) == -1) { |
269 |
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if (errno == ENOENT) |
270 |
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return (-1); /* out of ptys */ |
271 |
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} else { |
272 |
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line[5] = 't'; |
273 |
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/* These will fail */ |
274 |
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(void) chown(line, getuid(), 0); |
275 |
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(void) chmod(line, S_IRUSR|S_IWUSR|S_IWGRP); |
276 |
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#ifdef HAVE_REVOKE |
277 |
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(void) revoke(line); |
278 |
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#endif |
279 |
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if ((slave = open(line, O_RDWR, 0)) != -1) { |
280 |
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*amaster = master; |
281 |
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*aslave = slave; |
282 |
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return 0; |
283 |
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} |
284 |
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(void) close(master); |
285 |
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line[5] = 'p'; |
286 |
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} |
287 |
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} |
288 |
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} |
289 |
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errno = ENOENT; /* out of ptys */ |
290 |
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return (-1); |
291 |
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#endif |
292 |
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} |
293 |
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294 |
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/* |
295 |
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* XXX This is ugly |
296 |
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* We create and bind a socket, then fork off to another |
297 |
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* process, which connects to this socket, after which we |
298 |
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* exec the wanted program. If something (strange) happens, |
299 |
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* the accept() call could block us forever. |
300 |
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* |
301 |
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* do_pty = 0 Fork/exec inetd style |
302 |
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* do_pty = 1 Fork/exec using slirp.telnetd |
303 |
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* do_ptr = 2 Fork/exec using pty |
304 |
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*/ |
305 |
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int |
306 |
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fork_exec(so, ex, do_pty) |
307 |
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struct socket *so; |
308 |
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char *ex; |
309 |
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int do_pty; |
310 |
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{ |
311 |
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int s; |
312 |
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struct sockaddr_in addr; |
313 |
cebix |
1.2 |
socklen_t addrlen = sizeof(addr); |
314 |
gbeauche |
1.1 |
int opt; |
315 |
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int master; |
316 |
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char *argv[256]; |
317 |
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#if 0 |
318 |
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char buff[256]; |
319 |
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#endif |
320 |
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/* don't want to clobber the original */ |
321 |
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char *bptr; |
322 |
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char *curarg; |
323 |
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int c, i, ret; |
324 |
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325 |
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DEBUG_CALL("fork_exec"); |
326 |
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DEBUG_ARG("so = %lx", (long)so); |
327 |
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DEBUG_ARG("ex = %lx", (long)ex); |
328 |
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DEBUG_ARG("do_pty = %lx", (long)do_pty); |
329 |
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330 |
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if (do_pty == 2) { |
331 |
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if (slirp_openpty(&master, &s) == -1) { |
332 |
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lprint("Error: openpty failed: %s\n", strerror(errno)); |
333 |
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return 0; |
334 |
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} |
335 |
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} else { |
336 |
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addr.sin_family = AF_INET; |
337 |
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addr.sin_port = 0; |
338 |
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addr.sin_addr.s_addr = INADDR_ANY; |
339 |
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340 |
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if ((s = socket(AF_INET, SOCK_STREAM, 0)) < 0 || |
341 |
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bind(s, (struct sockaddr *)&addr, addrlen) < 0 || |
342 |
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listen(s, 1) < 0) { |
343 |
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lprint("Error: inet socket: %s\n", strerror(errno)); |
344 |
|
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closesocket(s); |
345 |
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346 |
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return 0; |
347 |
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} |
348 |
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} |
349 |
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|
350 |
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switch(fork()) { |
351 |
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case -1: |
352 |
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lprint("Error: fork failed: %s\n", strerror(errno)); |
353 |
|
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close(s); |
354 |
|
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if (do_pty == 2) |
355 |
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close(master); |
356 |
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return 0; |
357 |
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358 |
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case 0: |
359 |
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/* Set the DISPLAY */ |
360 |
|
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if (do_pty == 2) { |
361 |
|
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(void) close(master); |
362 |
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#ifdef TIOCSCTTY /* XXXXX */ |
363 |
|
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(void) setsid(); |
364 |
|
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ioctl(s, TIOCSCTTY, (char *)NULL); |
365 |
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#endif |
366 |
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} else { |
367 |
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getsockname(s, (struct sockaddr *)&addr, &addrlen); |
368 |
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close(s); |
369 |
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/* |
370 |
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* Connect to the socket |
371 |
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* XXX If any of these fail, we're in trouble! |
372 |
|
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*/ |
373 |
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s = socket(AF_INET, SOCK_STREAM, 0); |
374 |
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addr.sin_addr = loopback_addr; |
375 |
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do { |
376 |
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ret = connect(s, (struct sockaddr *)&addr, addrlen); |
377 |
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} while (ret < 0 && errno == EINTR); |
378 |
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} |
379 |
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380 |
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#if 0 |
381 |
|
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if (x_port >= 0) { |
382 |
|
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#ifdef HAVE_SETENV |
383 |
|
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sprintf(buff, "%s:%d.%d", inet_ntoa(our_addr), x_port, x_screen); |
384 |
|
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setenv("DISPLAY", buff, 1); |
385 |
|
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#else |
386 |
|
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sprintf(buff, "DISPLAY=%s:%d.%d", inet_ntoa(our_addr), x_port, x_screen); |
387 |
|
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putenv(buff); |
388 |
|
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#endif |
389 |
|
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} |
390 |
|
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#endif |
391 |
|
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dup2(s, 0); |
392 |
|
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dup2(s, 1); |
393 |
|
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dup2(s, 2); |
394 |
|
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for (s = 3; s <= 255; s++) |
395 |
|
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close(s); |
396 |
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|
397 |
|
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i = 0; |
398 |
|
|
bptr = strdup(ex); /* No need to free() this */ |
399 |
|
|
if (do_pty == 1) { |
400 |
|
|
/* Setup "slirp.telnetd -x" */ |
401 |
|
|
argv[i++] = "slirp.telnetd"; |
402 |
|
|
argv[i++] = "-x"; |
403 |
|
|
argv[i++] = bptr; |
404 |
|
|
} else |
405 |
|
|
do { |
406 |
|
|
/* Change the string into argv[] */ |
407 |
|
|
curarg = bptr; |
408 |
|
|
while (*bptr != ' ' && *bptr != (char)0) |
409 |
|
|
bptr++; |
410 |
|
|
c = *bptr; |
411 |
|
|
*bptr++ = (char)0; |
412 |
|
|
argv[i++] = strdup(curarg); |
413 |
|
|
} while (c); |
414 |
|
|
|
415 |
|
|
argv[i] = 0; |
416 |
|
|
execvp(argv[0], argv); |
417 |
|
|
|
418 |
|
|
/* Ooops, failed, let's tell the user why */ |
419 |
|
|
{ |
420 |
|
|
char buff[256]; |
421 |
|
|
|
422 |
|
|
sprintf(buff, "Error: execvp of %s failed: %s\n", |
423 |
|
|
argv[0], strerror(errno)); |
424 |
|
|
write(2, buff, strlen(buff)+1); |
425 |
|
|
} |
426 |
|
|
close(0); close(1); close(2); /* XXX */ |
427 |
|
|
exit(1); |
428 |
|
|
|
429 |
|
|
default: |
430 |
|
|
if (do_pty == 2) { |
431 |
|
|
close(s); |
432 |
|
|
so->s = master; |
433 |
|
|
} else { |
434 |
|
|
/* |
435 |
|
|
* XXX this could block us... |
436 |
|
|
* XXX Should set a timer here, and if accept() doesn't |
437 |
|
|
* return after X seconds, declare it a failure |
438 |
|
|
* The only reason this will block forever is if socket() |
439 |
|
|
* of connect() fail in the child process |
440 |
|
|
*/ |
441 |
|
|
do { |
442 |
|
|
so->s = accept(s, (struct sockaddr *)&addr, &addrlen); |
443 |
|
|
} while (so->s < 0 && errno == EINTR); |
444 |
|
|
closesocket(s); |
445 |
|
|
opt = 1; |
446 |
|
|
setsockopt(so->s,SOL_SOCKET,SO_REUSEADDR,(char *)&opt,sizeof(int)); |
447 |
|
|
opt = 1; |
448 |
|
|
setsockopt(so->s,SOL_SOCKET,SO_OOBINLINE,(char *)&opt,sizeof(int)); |
449 |
|
|
} |
450 |
|
|
fd_nonblock(so->s); |
451 |
|
|
|
452 |
|
|
/* Append the telnet options now */ |
453 |
|
|
if (so->so_m != 0 && do_pty == 1) { |
454 |
|
|
sbappend(so, so->so_m); |
455 |
|
|
so->so_m = 0; |
456 |
|
|
} |
457 |
|
|
|
458 |
|
|
return 1; |
459 |
|
|
} |
460 |
|
|
} |
461 |
|
|
#endif |
462 |
|
|
|
463 |
|
|
#ifndef HAVE_STRDUP |
464 |
|
|
char * |
465 |
|
|
strdup(str) |
466 |
|
|
const char *str; |
467 |
|
|
{ |
468 |
|
|
char *bptr; |
469 |
|
|
|
470 |
|
|
bptr = (char *)malloc(strlen(str)+1); |
471 |
|
|
strcpy(bptr, str); |
472 |
|
|
|
473 |
|
|
return bptr; |
474 |
|
|
} |
475 |
|
|
#endif |
476 |
|
|
|
477 |
|
|
#if 0 |
478 |
|
|
void |
479 |
|
|
snooze_hup(num) |
480 |
|
|
int num; |
481 |
|
|
{ |
482 |
|
|
int s, ret; |
483 |
|
|
#ifndef NO_UNIX_SOCKETS |
484 |
|
|
struct sockaddr_un sock_un; |
485 |
|
|
#endif |
486 |
|
|
struct sockaddr_in sock_in; |
487 |
|
|
char buff[256]; |
488 |
|
|
|
489 |
|
|
ret = -1; |
490 |
|
|
if (slirp_socket_passwd) { |
491 |
|
|
s = socket(AF_INET, SOCK_STREAM, 0); |
492 |
|
|
if (s < 0) |
493 |
|
|
slirp_exit(1); |
494 |
|
|
sock_in.sin_family = AF_INET; |
495 |
|
|
sock_in.sin_addr.s_addr = slirp_socket_addr; |
496 |
|
|
sock_in.sin_port = htons(slirp_socket_port); |
497 |
|
|
if (connect(s, (struct sockaddr *)&sock_in, sizeof(sock_in)) != 0) |
498 |
|
|
slirp_exit(1); /* just exit...*/ |
499 |
|
|
sprintf(buff, "kill %s:%d", slirp_socket_passwd, slirp_socket_unit); |
500 |
|
|
write(s, buff, strlen(buff)+1); |
501 |
|
|
} |
502 |
|
|
#ifndef NO_UNIX_SOCKETS |
503 |
|
|
else { |
504 |
|
|
s = socket(AF_UNIX, SOCK_STREAM, 0); |
505 |
|
|
if (s < 0) |
506 |
|
|
slirp_exit(1); |
507 |
|
|
sock_un.sun_family = AF_UNIX; |
508 |
|
|
strcpy(sock_un.sun_path, socket_path); |
509 |
|
|
if (connect(s, (struct sockaddr *)&sock_un, |
510 |
|
|
sizeof(sock_un.sun_family) + sizeof(sock_un.sun_path)) != 0) |
511 |
|
|
slirp_exit(1); |
512 |
|
|
sprintf(buff, "kill none:%d", slirp_socket_unit); |
513 |
|
|
write(s, buff, strlen(buff)+1); |
514 |
|
|
} |
515 |
|
|
#endif |
516 |
|
|
slirp_exit(0); |
517 |
|
|
} |
518 |
|
|
|
519 |
|
|
|
520 |
|
|
void |
521 |
|
|
snooze() |
522 |
|
|
{ |
523 |
|
|
sigset_t s; |
524 |
|
|
int i; |
525 |
|
|
|
526 |
|
|
/* Don't need our data anymore */ |
527 |
|
|
/* XXX This makes SunOS barf */ |
528 |
|
|
/* brk(0); */ |
529 |
|
|
|
530 |
|
|
/* Close all fd's */ |
531 |
|
|
for (i = 255; i >= 0; i--) |
532 |
|
|
close(i); |
533 |
|
|
|
534 |
|
|
signal(SIGQUIT, slirp_exit); |
535 |
|
|
signal(SIGHUP, snooze_hup); |
536 |
|
|
sigemptyset(&s); |
537 |
|
|
|
538 |
|
|
/* Wait for any signal */ |
539 |
|
|
sigsuspend(&s); |
540 |
|
|
|
541 |
|
|
/* Just in case ... */ |
542 |
|
|
exit(255); |
543 |
|
|
} |
544 |
|
|
|
545 |
|
|
void |
546 |
|
|
relay(s) |
547 |
|
|
int s; |
548 |
|
|
{ |
549 |
|
|
char buf[8192]; |
550 |
|
|
int n; |
551 |
|
|
fd_set readfds; |
552 |
|
|
struct ttys *ttyp; |
553 |
|
|
|
554 |
|
|
/* Don't need our data anymore */ |
555 |
|
|
/* XXX This makes SunOS barf */ |
556 |
|
|
/* brk(0); */ |
557 |
|
|
|
558 |
|
|
signal(SIGQUIT, slirp_exit); |
559 |
|
|
signal(SIGHUP, slirp_exit); |
560 |
|
|
signal(SIGINT, slirp_exit); |
561 |
|
|
signal(SIGTERM, slirp_exit); |
562 |
|
|
|
563 |
|
|
/* Fudge to get term_raw and term_restore to work */ |
564 |
|
|
if (NULL == (ttyp = tty_attach (0, slirp_tty))) { |
565 |
|
|
lprint ("Error: tty_attach failed in misc.c:relay()\r\n"); |
566 |
|
|
slirp_exit (1); |
567 |
|
|
} |
568 |
|
|
ttyp->fd = 0; |
569 |
|
|
ttyp->flags |= TTY_CTTY; |
570 |
|
|
term_raw(ttyp); |
571 |
|
|
|
572 |
|
|
while (1) { |
573 |
|
|
FD_ZERO(&readfds); |
574 |
|
|
|
575 |
|
|
FD_SET(0, &readfds); |
576 |
|
|
FD_SET(s, &readfds); |
577 |
|
|
|
578 |
|
|
n = select(s+1, &readfds, (fd_set *)0, (fd_set *)0, (struct timeval *)0); |
579 |
|
|
|
580 |
|
|
if (n <= 0) |
581 |
|
|
slirp_exit(0); |
582 |
|
|
|
583 |
|
|
if (FD_ISSET(0, &readfds)) { |
584 |
|
|
n = read(0, buf, 8192); |
585 |
|
|
if (n <= 0) |
586 |
|
|
slirp_exit(0); |
587 |
|
|
n = writen(s, buf, n); |
588 |
|
|
if (n <= 0) |
589 |
|
|
slirp_exit(0); |
590 |
|
|
} |
591 |
|
|
|
592 |
|
|
if (FD_ISSET(s, &readfds)) { |
593 |
|
|
n = read(s, buf, 8192); |
594 |
|
|
if (n <= 0) |
595 |
|
|
slirp_exit(0); |
596 |
|
|
n = writen(0, buf, n); |
597 |
|
|
if (n <= 0) |
598 |
|
|
slirp_exit(0); |
599 |
|
|
} |
600 |
|
|
} |
601 |
|
|
|
602 |
|
|
/* Just in case.... */ |
603 |
|
|
exit(1); |
604 |
|
|
} |
605 |
|
|
#endif |
606 |
|
|
|
607 |
|
|
int (*lprint_print) _P((void *, const char *, va_list)); |
608 |
|
|
char *lprint_ptr, *lprint_ptr2, **lprint_arg; |
609 |
|
|
|
610 |
|
|
void |
611 |
|
|
#ifdef __STDC__ |
612 |
|
|
lprint(const char *format, ...) |
613 |
|
|
#else |
614 |
|
|
lprint(va_alist) va_dcl |
615 |
|
|
#endif |
616 |
|
|
{ |
617 |
|
|
va_list args; |
618 |
|
|
|
619 |
|
|
#ifdef __STDC__ |
620 |
|
|
va_start(args, format); |
621 |
|
|
#else |
622 |
|
|
char *format; |
623 |
|
|
va_start(args); |
624 |
|
|
format = va_arg(args, char *); |
625 |
|
|
#endif |
626 |
|
|
#if 0 |
627 |
|
|
/* If we're printing to an sbuf, make sure there's enough room */ |
628 |
|
|
/* XXX +100? */ |
629 |
|
|
if (lprint_sb) { |
630 |
|
|
if ((lprint_ptr - lprint_sb->sb_wptr) >= |
631 |
|
|
(lprint_sb->sb_datalen - (strlen(format) + 100))) { |
632 |
|
|
int deltaw = lprint_sb->sb_wptr - lprint_sb->sb_data; |
633 |
|
|
int deltar = lprint_sb->sb_rptr - lprint_sb->sb_data; |
634 |
|
|
int deltap = lprint_ptr - lprint_sb->sb_data; |
635 |
|
|
|
636 |
|
|
lprint_sb->sb_data = (char *)realloc(lprint_sb->sb_data, |
637 |
|
|
lprint_sb->sb_datalen + TCP_SNDSPACE); |
638 |
|
|
|
639 |
|
|
/* Adjust all values */ |
640 |
|
|
lprint_sb->sb_wptr = lprint_sb->sb_data + deltaw; |
641 |
|
|
lprint_sb->sb_rptr = lprint_sb->sb_data + deltar; |
642 |
|
|
lprint_ptr = lprint_sb->sb_data + deltap; |
643 |
|
|
|
644 |
|
|
lprint_sb->sb_datalen += TCP_SNDSPACE; |
645 |
|
|
} |
646 |
|
|
} |
647 |
|
|
#endif |
648 |
|
|
if (lprint_print) |
649 |
|
|
lprint_ptr += (*lprint_print)(*lprint_arg, format, args); |
650 |
|
|
|
651 |
|
|
/* Check if they want output to be logged to file as well */ |
652 |
|
|
if (lfd) { |
653 |
|
|
/* |
654 |
|
|
* Remove \r's |
655 |
|
|
* otherwise you'll get ^M all over the file |
656 |
|
|
*/ |
657 |
|
|
int len = strlen(format); |
658 |
|
|
char *bptr1, *bptr2; |
659 |
|
|
|
660 |
|
|
bptr1 = bptr2 = strdup(format); |
661 |
|
|
|
662 |
|
|
while (len--) { |
663 |
|
|
if (*bptr1 == '\r') |
664 |
|
|
memcpy(bptr1, bptr1+1, len+1); |
665 |
|
|
else |
666 |
|
|
bptr1++; |
667 |
|
|
} |
668 |
|
|
vfprintf(lfd, bptr2, args); |
669 |
|
|
free(bptr2); |
670 |
|
|
} |
671 |
|
|
va_end(args); |
672 |
|
|
} |
673 |
|
|
|
674 |
|
|
void |
675 |
|
|
add_emu(buff) |
676 |
|
|
char *buff; |
677 |
|
|
{ |
678 |
|
|
u_int lport, fport; |
679 |
|
|
u_int8_t tos = 0, emu = 0; |
680 |
|
|
char buff1[256], buff2[256], buff4[128]; |
681 |
|
|
char *buff3 = buff4; |
682 |
|
|
struct emu_t *emup; |
683 |
|
|
struct socket *so; |
684 |
|
|
|
685 |
|
|
if (sscanf(buff, "%256s %256s", buff2, buff1) != 2) { |
686 |
|
|
lprint("Error: Bad arguments\r\n"); |
687 |
|
|
return; |
688 |
|
|
} |
689 |
|
|
|
690 |
|
|
if (sscanf(buff1, "%d:%d", &lport, &fport) != 2) { |
691 |
|
|
lport = 0; |
692 |
|
|
if (sscanf(buff1, "%d", &fport) != 1) { |
693 |
|
|
lprint("Error: Bad first argument\r\n"); |
694 |
|
|
return; |
695 |
|
|
} |
696 |
|
|
} |
697 |
|
|
|
698 |
|
|
if (sscanf(buff2, "%128[^:]:%128s", buff1, buff3) != 2) { |
699 |
|
|
buff3 = 0; |
700 |
|
|
if (sscanf(buff2, "%256s", buff1) != 1) { |
701 |
|
|
lprint("Error: Bad second argument\r\n"); |
702 |
|
|
return; |
703 |
|
|
} |
704 |
|
|
} |
705 |
|
|
|
706 |
|
|
if (buff3) { |
707 |
|
|
if (strcmp(buff3, "lowdelay") == 0) |
708 |
|
|
tos = IPTOS_LOWDELAY; |
709 |
|
|
else if (strcmp(buff3, "throughput") == 0) |
710 |
|
|
tos = IPTOS_THROUGHPUT; |
711 |
|
|
else { |
712 |
|
|
lprint("Error: Expecting \"lowdelay\"/\"throughput\"\r\n"); |
713 |
|
|
return; |
714 |
|
|
} |
715 |
|
|
} |
716 |
|
|
|
717 |
|
|
if (strcmp(buff1, "ftp") == 0) |
718 |
|
|
emu = EMU_FTP; |
719 |
|
|
else if (strcmp(buff1, "irc") == 0) |
720 |
|
|
emu = EMU_IRC; |
721 |
|
|
else if (strcmp(buff1, "none") == 0) |
722 |
|
|
emu = EMU_NONE; /* ie: no emulation */ |
723 |
|
|
else { |
724 |
|
|
lprint("Error: Unknown service\r\n"); |
725 |
|
|
return; |
726 |
|
|
} |
727 |
|
|
|
728 |
|
|
/* First, check that it isn't already emulated */ |
729 |
|
|
for (emup = tcpemu; emup; emup = emup->next) { |
730 |
|
|
if (emup->lport == lport && emup->fport == fport) { |
731 |
|
|
lprint("Error: port already emulated\r\n"); |
732 |
|
|
return; |
733 |
|
|
} |
734 |
|
|
} |
735 |
|
|
|
736 |
|
|
/* link it */ |
737 |
|
|
emup = (struct emu_t *)malloc(sizeof (struct emu_t)); |
738 |
|
|
emup->lport = (u_int16_t)lport; |
739 |
|
|
emup->fport = (u_int16_t)fport; |
740 |
|
|
emup->tos = tos; |
741 |
|
|
emup->emu = emu; |
742 |
|
|
emup->next = tcpemu; |
743 |
|
|
tcpemu = emup; |
744 |
|
|
|
745 |
|
|
/* And finally, mark all current sessions, if any, as being emulated */ |
746 |
|
|
for (so = tcb.so_next; so != &tcb; so = so->so_next) { |
747 |
|
|
if ((lport && lport == ntohs(so->so_lport)) || |
748 |
|
|
(fport && fport == ntohs(so->so_fport))) { |
749 |
|
|
if (emu) |
750 |
|
|
so->so_emu = emu; |
751 |
|
|
if (tos) |
752 |
|
|
so->so_iptos = tos; |
753 |
|
|
} |
754 |
|
|
} |
755 |
|
|
|
756 |
|
|
lprint("Adding emulation for %s to port %d/%d\r\n", buff1, emup->lport, emup->fport); |
757 |
|
|
} |
758 |
|
|
|
759 |
|
|
#ifdef BAD_SPRINTF |
760 |
|
|
|
761 |
|
|
#undef vsprintf |
762 |
|
|
#undef sprintf |
763 |
|
|
|
764 |
|
|
/* |
765 |
|
|
* Some BSD-derived systems have a sprintf which returns char * |
766 |
|
|
*/ |
767 |
|
|
|
768 |
|
|
int |
769 |
|
|
vsprintf_len(string, format, args) |
770 |
|
|
char *string; |
771 |
|
|
const char *format; |
772 |
|
|
va_list args; |
773 |
|
|
{ |
774 |
|
|
vsprintf(string, format, args); |
775 |
|
|
return strlen(string); |
776 |
|
|
} |
777 |
|
|
|
778 |
|
|
int |
779 |
|
|
#ifdef __STDC__ |
780 |
|
|
sprintf_len(char *string, const char *format, ...) |
781 |
|
|
#else |
782 |
|
|
sprintf_len(va_alist) va_dcl |
783 |
|
|
#endif |
784 |
|
|
{ |
785 |
|
|
va_list args; |
786 |
|
|
#ifdef __STDC__ |
787 |
|
|
va_start(args, format); |
788 |
|
|
#else |
789 |
|
|
char *string; |
790 |
|
|
char *format; |
791 |
|
|
va_start(args); |
792 |
|
|
string = va_arg(args, char *); |
793 |
|
|
format = va_arg(args, char *); |
794 |
|
|
#endif |
795 |
|
|
vsprintf(string, format, args); |
796 |
|
|
return strlen(string); |
797 |
|
|
} |
798 |
|
|
|
799 |
|
|
#endif |
800 |
|
|
|
801 |
|
|
void |
802 |
|
|
u_sleep(usec) |
803 |
|
|
int usec; |
804 |
|
|
{ |
805 |
|
|
struct timeval t; |
806 |
|
|
fd_set fdset; |
807 |
|
|
|
808 |
|
|
FD_ZERO(&fdset); |
809 |
|
|
|
810 |
|
|
t.tv_sec = 0; |
811 |
|
|
t.tv_usec = usec * 1000; |
812 |
|
|
|
813 |
|
|
select(0, &fdset, &fdset, &fdset, &t); |
814 |
|
|
} |
815 |
|
|
|
816 |
|
|
/* |
817 |
|
|
* Set fd blocking and non-blocking |
818 |
|
|
*/ |
819 |
|
|
|
820 |
|
|
void |
821 |
|
|
fd_nonblock(fd) |
822 |
|
|
int fd; |
823 |
|
|
{ |
824 |
gbeauche |
1.4 |
#if defined USE_FIONBIO && defined FIONBIO |
825 |
gbeauche |
1.5 |
ioctlsockopt_t opt = 1; |
826 |
gbeauche |
1.1 |
|
827 |
|
|
ioctlsocket(fd, FIONBIO, &opt); |
828 |
|
|
#else |
829 |
|
|
int opt; |
830 |
|
|
|
831 |
|
|
opt = fcntl(fd, F_GETFL, 0); |
832 |
|
|
opt |= O_NONBLOCK; |
833 |
|
|
fcntl(fd, F_SETFL, opt); |
834 |
|
|
#endif |
835 |
|
|
} |
836 |
|
|
|
837 |
|
|
void |
838 |
|
|
fd_block(fd) |
839 |
|
|
int fd; |
840 |
|
|
{ |
841 |
gbeauche |
1.4 |
#if defined USE_FIONBIO && defined FIONBIO |
842 |
gbeauche |
1.5 |
ioctlsockopt_t opt = 0; |
843 |
gbeauche |
1.1 |
|
844 |
|
|
ioctlsocket(fd, FIONBIO, &opt); |
845 |
|
|
#else |
846 |
|
|
int opt; |
847 |
|
|
|
848 |
|
|
opt = fcntl(fd, F_GETFL, 0); |
849 |
|
|
opt &= ~O_NONBLOCK; |
850 |
|
|
fcntl(fd, F_SETFL, opt); |
851 |
|
|
#endif |
852 |
|
|
} |
853 |
|
|
|
854 |
|
|
|
855 |
|
|
#if 0 |
856 |
|
|
/* |
857 |
|
|
* invoke RSH |
858 |
|
|
*/ |
859 |
|
|
int |
860 |
|
|
rsh_exec(so,ns, user, host, args) |
861 |
|
|
struct socket *so; |
862 |
|
|
struct socket *ns; |
863 |
|
|
char *user; |
864 |
|
|
char *host; |
865 |
|
|
char *args; |
866 |
|
|
{ |
867 |
|
|
int fd[2]; |
868 |
|
|
int fd0[2]; |
869 |
|
|
int s; |
870 |
|
|
char buff[256]; |
871 |
|
|
|
872 |
|
|
DEBUG_CALL("rsh_exec"); |
873 |
|
|
DEBUG_ARG("so = %lx", (long)so); |
874 |
|
|
|
875 |
|
|
if (pipe(fd)<0) { |
876 |
|
|
lprint("Error: pipe failed: %s\n", strerror(errno)); |
877 |
|
|
return 0; |
878 |
|
|
} |
879 |
|
|
/* #ifdef HAVE_SOCKETPAIR */ |
880 |
|
|
#if 1 |
881 |
|
|
if (socketpair(PF_UNIX,SOCK_STREAM,0, fd0) == -1) { |
882 |
|
|
close(fd[0]); |
883 |
|
|
close(fd[1]); |
884 |
|
|
lprint("Error: openpty failed: %s\n", strerror(errno)); |
885 |
|
|
return 0; |
886 |
|
|
} |
887 |
|
|
#else |
888 |
|
|
if (slirp_openpty(&fd0[0], &fd0[1]) == -1) { |
889 |
|
|
close(fd[0]); |
890 |
|
|
close(fd[1]); |
891 |
|
|
lprint("Error: openpty failed: %s\n", strerror(errno)); |
892 |
|
|
return 0; |
893 |
|
|
} |
894 |
|
|
#endif |
895 |
|
|
|
896 |
|
|
switch(fork()) { |
897 |
|
|
case -1: |
898 |
|
|
lprint("Error: fork failed: %s\n", strerror(errno)); |
899 |
|
|
close(fd[0]); |
900 |
|
|
close(fd[1]); |
901 |
|
|
close(fd0[0]); |
902 |
|
|
close(fd0[1]); |
903 |
|
|
return 0; |
904 |
|
|
|
905 |
|
|
case 0: |
906 |
|
|
close(fd[0]); |
907 |
|
|
close(fd0[0]); |
908 |
|
|
|
909 |
|
|
/* Set the DISPLAY */ |
910 |
|
|
if (x_port >= 0) { |
911 |
|
|
#ifdef HAVE_SETENV |
912 |
|
|
sprintf(buff, "%s:%d.%d", inet_ntoa(our_addr), x_port, x_screen); |
913 |
|
|
setenv("DISPLAY", buff, 1); |
914 |
|
|
#else |
915 |
|
|
sprintf(buff, "DISPLAY=%s:%d.%d", inet_ntoa(our_addr), x_port, x_screen); |
916 |
|
|
putenv(buff); |
917 |
|
|
#endif |
918 |
|
|
} |
919 |
|
|
|
920 |
|
|
dup2(fd0[1], 0); |
921 |
|
|
dup2(fd0[1], 1); |
922 |
|
|
dup2(fd[1], 2); |
923 |
|
|
for (s = 3; s <= 255; s++) |
924 |
|
|
close(s); |
925 |
|
|
|
926 |
|
|
execlp("rsh","rsh","-l", user, host, args, NULL); |
927 |
|
|
|
928 |
|
|
/* Ooops, failed, let's tell the user why */ |
929 |
|
|
|
930 |
|
|
sprintf(buff, "Error: execlp of %s failed: %s\n", |
931 |
|
|
"rsh", strerror(errno)); |
932 |
|
|
write(2, buff, strlen(buff)+1); |
933 |
|
|
close(0); close(1); close(2); /* XXX */ |
934 |
|
|
exit(1); |
935 |
|
|
|
936 |
|
|
default: |
937 |
|
|
close(fd[1]); |
938 |
|
|
close(fd0[1]); |
939 |
|
|
ns->s=fd[0]; |
940 |
|
|
so->s=fd0[0]; |
941 |
|
|
|
942 |
|
|
return 1; |
943 |
|
|
} |
944 |
|
|
} |
945 |
|
|
#endif |