| 1 | /*
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| 2 | * Copyright (c) 1995 Danny Gasparovski.
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| 3 | *
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| 4 | * Please read the file COPYRIGHT for the
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| 5 | * terms and conditions of the copyright.
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| 6 | */
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| 7 |
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| 8 | #define WANT_SYS_IOCTL_H
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| 9 | #include <slirp.h>
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| 10 |
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| 11 | #ifndef VBOX
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| 12 | u_int curtime, time_fasttimo, last_slowtimo, detach_time;
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| 13 | u_int detach_wait = 600000; /* 10 minutes */
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| 14 | #endif /* !VBOX */
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| 15 |
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| 16 | #if 0
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| 17 | int x_port = -1;
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| 18 | int x_display = 0;
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| 19 | int x_screen = 0;
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| 20 |
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| 21 | int
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| 22 | show_x(buff, inso)
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| 23 | char *buff;
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| 24 | struct socket *inso;
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| 25 | {
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| 26 | if (x_port < 0) {
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| 27 | lprint("X Redir: X not being redirected.\r\n");
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| 28 | } else {
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| 29 | lprint("X Redir: In sh/bash/zsh/etc. type: DISPLAY=%s:%d.%d; export DISPLAY\r\n",
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| 30 | inet_ntoa(our_addr), x_port, x_screen);
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| 31 | lprint("X Redir: In csh/tcsh/etc. type: setenv DISPLAY %s:%d.%d\r\n",
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| 32 | inet_ntoa(our_addr), x_port, x_screen);
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| 33 | if (x_display)
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| 34 | lprint("X Redir: Redirecting to display %d\r\n", x_display);
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| 35 | }
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| 36 |
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| 37 | return CFG_OK;
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| 38 | }
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| 39 |
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| 40 |
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| 41 | /*
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| 42 | * XXX Allow more than one X redirection?
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| 43 | */
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| 44 | void
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| 45 | redir_x(inaddr, start_port, display, screen)
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| 46 | u_int32_t inaddr;
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| 47 | int start_port;
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| 48 | int display;
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| 49 | int screen;
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| 50 | {
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| 51 | int i;
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| 52 |
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| 53 | if (x_port >= 0) {
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| 54 | lprint("X Redir: X already being redirected.\r\n");
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| 55 | show_x(0, 0);
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| 56 | } else {
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| 57 | for (i = 6001 + (start_port-1); i <= 6100; i++) {
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| 58 | if (solisten(htons(i), inaddr, htons(6000 + display), 0)) {
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| 59 | /* Success */
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| 60 | x_port = i - 6000;
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| 61 | x_display = display;
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| 62 | x_screen = screen;
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| 63 | show_x(0, 0);
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| 64 | return;
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| 65 | }
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| 66 | }
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| 67 | lprint("X Redir: Error: Couldn't redirect a port for X. Weird.\r\n");
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| 68 | }
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| 69 | }
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| 70 | #endif
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| 71 |
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| 72 | #ifndef HAVE_INET_ATON
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| 73 | int
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| 74 | inet_aton(cp, ia)
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| 75 | const char *cp;
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| 76 | struct in_addr *ia;
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| 77 | {
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| 78 | u_int32_t addr = inet_addr(cp);
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| 79 | if (addr == 0xffffffff)
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| 80 | return 0;
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| 81 | ia->s_addr = addr;
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| 82 | return 1;
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| 83 | }
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| 84 | #endif
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| 85 |
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| 86 | /*
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| 87 | * Get our IP address and put it in our_addr
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| 88 | */
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| 89 | void
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| 90 | #ifdef VBOX
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| 91 | getouraddr(PNATState pData)
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| 92 | #else /* !VBOX */
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| 93 | getouraddr()
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| 94 | #endif /* !VBOX */
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| 95 | {
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| 96 | char buff[256];
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| 97 | struct hostent *he = NULL;
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| 98 |
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| 99 | if (gethostname(buff,256) == 0)
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| 100 | he = gethostbyname(buff);
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| 101 | if (he)
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| 102 | our_addr = *(struct in_addr *)he->h_addr;
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| 103 | if (our_addr.s_addr == 0)
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| 104 | our_addr.s_addr = loopback_addr.s_addr;
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| 105 | }
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| 106 |
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| 107 | #if SIZEOF_CHAR_P == 8
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| 108 |
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| 109 | struct quehead_32 {
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| 110 | u_int32_t qh_link;
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| 111 | u_int32_t qh_rlink;
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| 112 | };
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| 113 |
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| 114 | #ifndef _MSC_VER
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| 115 | inline
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| 116 | #endif
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| 117 | void
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| 118 | insque_32(PNATState pData, void *a, void *b)
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| 119 | {
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| 120 | register struct quehead_32 *element = (struct quehead_32 *) a;
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| 121 | register struct quehead_32 *head = (struct quehead_32 *) b;
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| 122 | struct quehead_32 *link = u32_to_ptr(pData, head->qh_link, struct quehead_32 *);
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| 123 |
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| 124 | element->qh_link = head->qh_link;
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| 125 | element->qh_rlink = ptr_to_u32(pData, head);
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| 126 | Assert(link->qh_rlink == element->qh_rlink);
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| 127 | link->qh_rlink = head->qh_link = ptr_to_u32(pData, element);
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| 128 | }
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| 129 |
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| 130 | #ifndef _MSC_VER
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| 131 | inline
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| 132 | #endif
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| 133 | void
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| 134 | remque_32(PNATState pData, void *a)
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| 135 | {
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| 136 | register struct quehead_32 *element = (struct quehead_32 *) a;
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| 137 | struct quehead_32 *link = u32_to_ptr(pData, element->qh_link, struct quehead_32 *);
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| 138 | struct quehead_32 *rlink = u32_to_ptr(pData, element->qh_rlink, struct quehead_32 *);
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| 139 |
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| 140 | u32ptr_done(pData, link->qh_rlink, element);
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| 141 | link->qh_rlink = element->qh_rlink;
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| 142 | rlink->qh_link = element->qh_link;
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| 143 | element->qh_rlink = 0;
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| 144 | }
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| 145 |
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| 146 | #endif /* SIZEOF_CHAR_P == 8 */
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| 147 |
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| 148 | struct quehead {
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| 149 | struct quehead *qh_link;
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| 150 | struct quehead *qh_rlink;
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| 151 | };
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| 152 |
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| 153 | #if defined(VBOX) && defined(_MSC_VER)
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| 154 | void
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| 155 | #else
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| 156 | inline void
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| 157 | #endif
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| 158 | insque(PNATState pData, void *a, void *b)
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| 159 | {
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| 160 | register struct quehead *element = (struct quehead *) a;
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| 161 | register struct quehead *head = (struct quehead *) b;
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| 162 | element->qh_link = head->qh_link;
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| 163 | head->qh_link = (struct quehead *)element;
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| 164 | element->qh_rlink = (struct quehead *)head;
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| 165 | ((struct quehead *)(element->qh_link))->qh_rlink
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| 166 | = (struct quehead *)element;
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| 167 | }
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| 168 |
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| 169 | #if defined(VBOX) && defined(_MSC_VER)
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| 170 | void
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| 171 | #else
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| 172 | inline void
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| 173 | #endif
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| 174 | remque(PNATState pData, void *a)
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| 175 | {
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| 176 | register struct quehead *element = (struct quehead *) a;
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| 177 | ((struct quehead *)(element->qh_link))->qh_rlink = element->qh_rlink;
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| 178 | ((struct quehead *)(element->qh_rlink))->qh_link = element->qh_link;
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| 179 | element->qh_rlink = NULL;
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| 180 | /* element->qh_link = NULL; TCP FIN1 crashes if you do this. Why ? */
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| 181 | }
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| 182 |
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| 183 | /* #endif */
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| 184 |
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| 185 |
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| 186 | int
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| 187 | add_exec(ex_ptr, do_pty, exec, addr, port)
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| 188 | struct ex_list **ex_ptr;
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| 189 | int do_pty;
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| 190 | char *exec;
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| 191 | int addr;
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| 192 | int port;
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| 193 | {
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| 194 | struct ex_list *tmp_ptr;
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| 195 |
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| 196 | /* First, check if the port is "bound" */
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| 197 | for (tmp_ptr = *ex_ptr; tmp_ptr; tmp_ptr = tmp_ptr->ex_next) {
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| 198 | if (port == tmp_ptr->ex_fport && addr == tmp_ptr->ex_addr)
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| 199 | return -1;
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| 200 | }
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| 201 |
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| 202 | tmp_ptr = *ex_ptr;
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| 203 | *ex_ptr = (struct ex_list *)malloc(sizeof(struct ex_list));
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| 204 | (*ex_ptr)->ex_fport = port;
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| 205 | (*ex_ptr)->ex_addr = addr;
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| 206 | (*ex_ptr)->ex_pty = do_pty;
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| 207 | (*ex_ptr)->ex_exec = strdup(exec);
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| 208 | (*ex_ptr)->ex_next = tmp_ptr;
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| 209 | return 0;
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| 210 | }
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| 211 |
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| 212 | #ifndef HAVE_STRERROR
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| 213 |
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| 214 | /*
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| 215 | * For systems with no strerror
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| 216 | */
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| 217 |
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| 218 | extern int sys_nerr;
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| 219 | extern char *sys_errlist[];
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| 220 |
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| 221 | char *
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| 222 | strerror(error)
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| 223 | int error;
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| 224 | {
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| 225 | if (error < sys_nerr)
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| 226 | return sys_errlist[error];
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| 227 | else
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| 228 | return "Unknown error.";
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| 229 | }
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| 230 |
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| 231 | #endif
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| 232 |
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| 233 |
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| 234 | #ifdef _WIN32
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| 235 |
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| 236 | int
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| 237 | #ifdef VBOX
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| 238 | fork_exec(PNATState pData, struct socket *so, char *ex, int do_pty)
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| 239 | #else /* !VBOX */
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| 240 | fork_exec(so, ex, do_pty)
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| 241 | struct socket *so;
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| 242 | char *ex;
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| 243 | int do_pty;
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| 244 | #endif /* !VBOX */
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| 245 | {
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| 246 | /* not implemented */
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| 247 | return 0;
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| 248 | }
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| 249 |
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| 250 | #else
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| 251 |
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| 252 | #ifndef VBOX
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| 253 | int
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| 254 | slirp_openpty(amaster, aslave)
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| 255 | int *amaster, *aslave;
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| 256 | {
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| 257 | register int master, slave;
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| 258 |
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| 259 | #ifdef HAVE_GRANTPT
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| 260 | char *ptr;
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| 261 |
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| 262 | if ((master = open("/dev/ptmx", O_RDWR)) < 0 ||
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| 263 | grantpt(master) < 0 ||
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| 264 | unlockpt(master) < 0 ||
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| 265 | (ptr = ptsname(master)) == NULL) {
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| 266 | close(master);
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| 267 | return -1;
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| 268 | }
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| 269 |
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| 270 | if ((slave = open(ptr, O_RDWR)) < 0 ||
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| 271 | ioctl(slave, I_PUSH, "ptem") < 0 ||
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| 272 | ioctl(slave, I_PUSH, "ldterm") < 0 ||
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| 273 | ioctl(slave, I_PUSH, "ttcompat") < 0) {
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| 274 | close(master);
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| 275 | close(slave);
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| 276 | return -1;
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| 277 | }
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| 278 |
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| 279 | *amaster = master;
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| 280 | *aslave = slave;
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| 281 | return 0;
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| 282 |
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| 283 | #else
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| 284 |
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| 285 | static char line[] = "/dev/ptyXX";
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| 286 | register const char *cp1, *cp2;
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| 287 |
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| 288 | for (cp1 = "pqrsPQRS"; *cp1; cp1++) {
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| 289 | line[8] = *cp1;
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| 290 | for (cp2 = "0123456789abcdefghijklmnopqrstuv"; *cp2; cp2++) {
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| 291 | line[9] = *cp2;
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| 292 | if ((master = open(line, O_RDWR, 0)) == -1) {
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| 293 | if (errno == ENOENT)
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| 294 | return (-1); /* out of ptys */
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| 295 | } else {
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| 296 | line[5] = 't';
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| 297 | /* These will fail */
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| 298 | (void) chown(line, getuid(), 0);
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| 299 | (void) chmod(line, S_IRUSR|S_IWUSR|S_IWGRP);
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| 300 | #ifdef HAVE_REVOKE
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| 301 | (void) revoke(line);
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| 302 | #endif
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| 303 | if ((slave = open(line, O_RDWR, 0)) != -1) {
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| 304 | *amaster = master;
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| 305 | *aslave = slave;
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| 306 | return 0;
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| 307 | }
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| 308 | (void) close(master);
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| 309 | line[5] = 'p';
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| 310 | }
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| 311 | }
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| 312 | }
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| 313 | errno = ENOENT; /* out of ptys */
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| 314 | return (-1);
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| 315 | #endif
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| 316 | }
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| 317 | #endif /* !VBOX */
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| 318 |
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| 319 | /*
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| 320 | * XXX This is ugly
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| 321 | * We create and bind a socket, then fork off to another
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| 322 | * process, which connects to this socket, after which we
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| 323 | * exec the wanted program. If something (strange) happens,
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| 324 | * the accept() call could block us forever.
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| 325 | *
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| 326 | * do_pty = 0 Fork/exec inetd style
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| 327 | * do_pty = 1 Fork/exec using slirp.telnetd
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| 328 | * do_ptr = 2 Fork/exec using pty
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| 329 | */
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| 330 | int
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| 331 | #ifdef VBOX
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| 332 | fork_exec(PNATState pData, struct socket *so, char *ex, int do_pty)
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| 333 | #else /* !VBOX */
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| 334 | fork_exec(so, ex, do_pty)
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| 335 | struct socket *so;
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| 336 | char *ex;
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| 337 | int do_pty;
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| 338 | #endif /* !VBOX */
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| 339 | {
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| 340 | int s;
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| 341 | struct sockaddr_in addr;
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| 342 | #ifndef VBOX
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| 343 | int addrlen = sizeof(addr);
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| 344 | #else /* VBOX */
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| 345 | socklen_t addrlen = sizeof(addr);
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| 346 | #endif /* VBOX */
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| 347 | int opt;
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| 348 | int master;
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| 349 | char *argv[256];
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| 350 | #if 0
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| 351 | char buff[256];
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| 352 | #endif
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| 353 | /* don't want to clobber the original */
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| 354 | char *bptr;
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| 355 | char *curarg;
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| 356 | int c, i, ret;
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| 357 |
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| 358 | DEBUG_CALL("fork_exec");
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| 359 | DEBUG_ARG("so = %lx", (long)so);
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| 360 | DEBUG_ARG("ex = %lx", (long)ex);
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| 361 | DEBUG_ARG("do_pty = %lx", (long)do_pty);
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| 362 |
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| 363 | if (do_pty == 2) {
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| 364 | #ifdef VBOX
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| 365 | AssertRelease(do_pty != 2);
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| 366 | /* shut up gcc */
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| 367 | s = 0;
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| 368 | master = 0;
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| 369 | #else /* !VBOX */
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| 370 | if (slirp_openpty(&master, &s) == -1) {
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| 371 | lprint("Error: openpty failed: %s\n", strerror(errno));
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| 372 | return 0;
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| 373 | }
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| 374 | #endif /* !VBOX */
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| 375 | } else {
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| 376 | addr.sin_family = AF_INET;
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| 377 | addr.sin_port = 0;
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| 378 | addr.sin_addr.s_addr = INADDR_ANY;
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| 379 |
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| 380 | if ((s = socket(AF_INET, SOCK_STREAM, 0)) < 0 ||
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| 381 | bind(s, (struct sockaddr *)&addr, addrlen) < 0 ||
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| 382 | listen(s, 1) < 0) {
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| 383 | lprint("Error: inet socket: %s\n", strerror(errno));
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| 384 | closesocket(s);
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| 385 |
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| 386 | return 0;
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| 387 | }
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| 388 | }
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| 389 |
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| 390 | switch(fork()) {
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| 391 | case -1:
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| 392 | lprint("Error: fork failed: %s\n", strerror(errno));
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| 393 | close(s);
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| 394 | if (do_pty == 2)
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| 395 | close(master);
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| 396 | return 0;
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| 397 |
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| 398 | case 0:
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| 399 | /* Set the DISPLAY */
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| 400 | if (do_pty == 2) {
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| 401 | (void) close(master);
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| 402 | #ifdef TIOCSCTTY /* XXXXX */
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| 403 | (void) setsid();
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| 404 | ioctl(s, TIOCSCTTY, (char *)NULL);
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| 405 | #endif
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| 406 | } else {
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| 407 | getsockname(s, (struct sockaddr *)&addr, &addrlen);
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| 408 | close(s);
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| 409 | /*
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| 410 | * Connect to the socket
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| 411 | * XXX If any of these fail, we're in trouble!
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| 412 | */
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| 413 | s = socket(AF_INET, SOCK_STREAM, 0);
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| 414 | addr.sin_addr = loopback_addr;
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| 415 | do {
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| 416 | ret = connect(s, (struct sockaddr *)&addr, addrlen);
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| 417 | } while (ret < 0 && errno == EINTR);
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| 418 | }
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| 419 |
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| 420 | #if 0
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| 421 | if (x_port >= 0) {
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| 422 | #ifdef HAVE_SETENV
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| 423 | sprintf(buff, "%s:%d.%d", inet_ntoa(our_addr), x_port, x_screen);
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| 424 | setenv("DISPLAY", buff, 1);
|
|---|
| 425 | #else
|
|---|
| 426 | sprintf(buff, "DISPLAY=%s:%d.%d", inet_ntoa(our_addr), x_port, x_screen);
|
|---|
| 427 | putenv(buff);
|
|---|
| 428 | #endif
|
|---|
| 429 | }
|
|---|
| 430 | #endif
|
|---|
| 431 | dup2(s, 0);
|
|---|
| 432 | dup2(s, 1);
|
|---|
| 433 | dup2(s, 2);
|
|---|
| 434 | for (s = 3; s <= 255; s++)
|
|---|
| 435 | close(s);
|
|---|
| 436 |
|
|---|
| 437 | i = 0;
|
|---|
| 438 | bptr = strdup(ex); /* No need to free() this */
|
|---|
| 439 | if (do_pty == 1) {
|
|---|
| 440 | /* Setup "slirp.telnetd -x" */
|
|---|
| 441 | argv[i++] = "slirp.telnetd";
|
|---|
| 442 | argv[i++] = "-x";
|
|---|
| 443 | argv[i++] = bptr;
|
|---|
| 444 | } else
|
|---|
| 445 | do {
|
|---|
| 446 | /* Change the string into argv[] */
|
|---|
| 447 | curarg = bptr;
|
|---|
| 448 | while (*bptr != ' ' && *bptr != (char)0)
|
|---|
| 449 | bptr++;
|
|---|
| 450 | c = *bptr;
|
|---|
| 451 | *bptr++ = (char)0;
|
|---|
| 452 | argv[i++] = strdup(curarg);
|
|---|
| 453 | } while (c);
|
|---|
| 454 |
|
|---|
| 455 | argv[i] = 0;
|
|---|
| 456 | execvp(argv[0], argv);
|
|---|
| 457 |
|
|---|
| 458 | /* Ooops, failed, let's tell the user why */
|
|---|
| 459 | {
|
|---|
| 460 | char buff[256];
|
|---|
| 461 |
|
|---|
| 462 | sprintf(buff, "Error: execvp of %s failed: %s\n",
|
|---|
| 463 | argv[0], strerror(errno));
|
|---|
| 464 | write(2, buff, strlen(buff)+1);
|
|---|
| 465 | }
|
|---|
| 466 | close(0); close(1); close(2); /* XXX */
|
|---|
| 467 | exit(1);
|
|---|
| 468 |
|
|---|
| 469 | default:
|
|---|
| 470 | if (do_pty == 2) {
|
|---|
| 471 | close(s);
|
|---|
| 472 | so->s = master;
|
|---|
| 473 | } else {
|
|---|
| 474 | /*
|
|---|
| 475 | * XXX this could block us...
|
|---|
| 476 | * XXX Should set a timer here, and if accept() doesn't
|
|---|
| 477 | * return after X seconds, declare it a failure
|
|---|
| 478 | * The only reason this will block forever is if socket()
|
|---|
| 479 | * of connect() fail in the child process
|
|---|
| 480 | */
|
|---|
| 481 | do {
|
|---|
| 482 | so->s = accept(s, (struct sockaddr *)&addr, &addrlen);
|
|---|
| 483 | } while (so->s < 0 && errno == EINTR);
|
|---|
| 484 | closesocket(s);
|
|---|
| 485 | opt = 1;
|
|---|
| 486 | setsockopt(so->s,SOL_SOCKET,SO_REUSEADDR,(char *)&opt,sizeof(int));
|
|---|
| 487 | opt = 1;
|
|---|
| 488 | setsockopt(so->s,SOL_SOCKET,SO_OOBINLINE,(char *)&opt,sizeof(int));
|
|---|
| 489 | }
|
|---|
| 490 | fd_nonblock(so->s);
|
|---|
| 491 |
|
|---|
| 492 | /* Append the telnet options now */
|
|---|
| 493 | if (so->so_m != 0 && do_pty == 1) {
|
|---|
| 494 | #ifdef VBOX
|
|---|
| 495 | sbappend(pData, so, so->so_m);
|
|---|
| 496 | #else /* !VBOX */
|
|---|
| 497 | sbappend(so, so->so_m);
|
|---|
| 498 | #endif /* !VBOX */
|
|---|
| 499 | so->so_m = 0;
|
|---|
| 500 | }
|
|---|
| 501 |
|
|---|
| 502 | return 1;
|
|---|
| 503 | }
|
|---|
| 504 | }
|
|---|
| 505 | #endif
|
|---|
| 506 |
|
|---|
| 507 | #ifndef HAVE_STRDUP
|
|---|
| 508 | char *
|
|---|
| 509 | strdup(str)
|
|---|
| 510 | const char *str;
|
|---|
| 511 | {
|
|---|
| 512 | char *bptr;
|
|---|
| 513 |
|
|---|
| 514 | bptr = (char *)malloc(strlen(str)+1);
|
|---|
| 515 | strcpy(bptr, str);
|
|---|
| 516 |
|
|---|
| 517 | return bptr;
|
|---|
| 518 | }
|
|---|
| 519 | #endif
|
|---|
| 520 |
|
|---|
| 521 | #if 0
|
|---|
| 522 | void
|
|---|
| 523 | snooze_hup(num)
|
|---|
| 524 | int num;
|
|---|
| 525 | {
|
|---|
| 526 | int s, ret;
|
|---|
| 527 | #ifndef NO_UNIX_SOCKETS
|
|---|
| 528 | struct sockaddr_un sock_un;
|
|---|
| 529 | #endif
|
|---|
| 530 | struct sockaddr_in sock_in;
|
|---|
| 531 | char buff[256];
|
|---|
| 532 |
|
|---|
| 533 | ret = -1;
|
|---|
| 534 | if (slirp_socket_passwd) {
|
|---|
| 535 | s = socket(AF_INET, SOCK_STREAM, 0);
|
|---|
| 536 | if (s < 0)
|
|---|
| 537 | slirp_exit(1);
|
|---|
| 538 | sock_in.sin_family = AF_INET;
|
|---|
| 539 | sock_in.sin_addr.s_addr = slirp_socket_addr;
|
|---|
| 540 | sock_in.sin_port = htons(slirp_socket_port);
|
|---|
| 541 | if (connect(s, (struct sockaddr *)&sock_in, sizeof(sock_in)) != 0)
|
|---|
| 542 | slirp_exit(1); /* just exit...*/
|
|---|
| 543 | sprintf(buff, "kill %s:%d", slirp_socket_passwd, slirp_socket_unit);
|
|---|
| 544 | write(s, buff, strlen(buff)+1);
|
|---|
| 545 | }
|
|---|
| 546 | #ifndef NO_UNIX_SOCKETS
|
|---|
| 547 | else {
|
|---|
| 548 | s = socket(AF_UNIX, SOCK_STREAM, 0);
|
|---|
| 549 | if (s < 0)
|
|---|
| 550 | slirp_exit(1);
|
|---|
| 551 | sock_un.sun_family = AF_UNIX;
|
|---|
| 552 | strcpy(sock_un.sun_path, socket_path);
|
|---|
| 553 | if (connect(s, (struct sockaddr *)&sock_un,
|
|---|
| 554 | sizeof(sock_un.sun_family) + sizeof(sock_un.sun_path)) != 0)
|
|---|
| 555 | slirp_exit(1);
|
|---|
| 556 | sprintf(buff, "kill none:%d", slirp_socket_unit);
|
|---|
| 557 | write(s, buff, strlen(buff)+1);
|
|---|
| 558 | }
|
|---|
| 559 | #endif
|
|---|
| 560 | slirp_exit(0);
|
|---|
| 561 | }
|
|---|
| 562 |
|
|---|
| 563 |
|
|---|
| 564 | void
|
|---|
| 565 | snooze()
|
|---|
| 566 | {
|
|---|
| 567 | sigset_t s;
|
|---|
| 568 | int i;
|
|---|
| 569 |
|
|---|
| 570 | /* Don't need our data anymore */
|
|---|
| 571 | /* XXX This makes SunOS barf */
|
|---|
| 572 | /* brk(0); */
|
|---|
| 573 |
|
|---|
| 574 | /* Close all fd's */
|
|---|
| 575 | for (i = 255; i >= 0; i--)
|
|---|
| 576 | close(i);
|
|---|
| 577 |
|
|---|
| 578 | signal(SIGQUIT, slirp_exit);
|
|---|
| 579 | signal(SIGHUP, snooze_hup);
|
|---|
| 580 | sigemptyset(&s);
|
|---|
| 581 |
|
|---|
| 582 | /* Wait for any signal */
|
|---|
| 583 | sigsuspend(&s);
|
|---|
| 584 |
|
|---|
| 585 | /* Just in case ... */
|
|---|
| 586 | exit(255);
|
|---|
| 587 | }
|
|---|
| 588 |
|
|---|
| 589 | void
|
|---|
| 590 | relay(s)
|
|---|
| 591 | int s;
|
|---|
| 592 | {
|
|---|
| 593 | char buf[8192];
|
|---|
| 594 | int n;
|
|---|
| 595 | fd_set readfds;
|
|---|
| 596 | struct ttys *ttyp;
|
|---|
| 597 |
|
|---|
| 598 | /* Don't need our data anymore */
|
|---|
| 599 | /* XXX This makes SunOS barf */
|
|---|
| 600 | /* brk(0); */
|
|---|
| 601 |
|
|---|
| 602 | signal(SIGQUIT, slirp_exit);
|
|---|
| 603 | signal(SIGHUP, slirp_exit);
|
|---|
| 604 | signal(SIGINT, slirp_exit);
|
|---|
| 605 | signal(SIGTERM, slirp_exit);
|
|---|
| 606 |
|
|---|
| 607 | /* Fudge to get term_raw and term_restore to work */
|
|---|
| 608 | if (NULL == (ttyp = tty_attach (0, slirp_tty))) {
|
|---|
| 609 | lprint ("Error: tty_attach failed in misc.c:relay()\r\n");
|
|---|
| 610 | slirp_exit (1);
|
|---|
| 611 | }
|
|---|
| 612 | ttyp->fd = 0;
|
|---|
| 613 | ttyp->flags |= TTY_CTTY;
|
|---|
| 614 | term_raw(ttyp);
|
|---|
| 615 |
|
|---|
| 616 | while (1) {
|
|---|
| 617 | FD_ZERO(&readfds);
|
|---|
| 618 |
|
|---|
| 619 | FD_SET(0, &readfds);
|
|---|
| 620 | FD_SET(s, &readfds);
|
|---|
| 621 |
|
|---|
| 622 | n = select(s+1, &readfds, (fd_set *)0, (fd_set *)0, (struct timeval *)0);
|
|---|
| 623 |
|
|---|
| 624 | if (n <= 0)
|
|---|
| 625 | slirp_exit(0);
|
|---|
| 626 |
|
|---|
| 627 | if (FD_ISSET(0, &readfds)) {
|
|---|
| 628 | n = read(0, buf, 8192);
|
|---|
| 629 | if (n <= 0)
|
|---|
| 630 | slirp_exit(0);
|
|---|
| 631 | n = writen(s, buf, n);
|
|---|
| 632 | if (n <= 0)
|
|---|
| 633 | slirp_exit(0);
|
|---|
| 634 | }
|
|---|
| 635 |
|
|---|
| 636 | if (FD_ISSET(s, &readfds)) {
|
|---|
| 637 | n = read(s, buf, 8192);
|
|---|
| 638 | if (n <= 0)
|
|---|
| 639 | slirp_exit(0);
|
|---|
| 640 | n = writen(0, buf, n);
|
|---|
| 641 | if (n <= 0)
|
|---|
| 642 | slirp_exit(0);
|
|---|
| 643 | }
|
|---|
| 644 | }
|
|---|
| 645 |
|
|---|
| 646 | /* Just in case.... */
|
|---|
| 647 | exit(1);
|
|---|
| 648 | }
|
|---|
| 649 | #endif
|
|---|
| 650 |
|
|---|
| 651 | #ifndef VBOX
|
|---|
| 652 | int (*lprint_print) _P((void *, const char *, va_list));
|
|---|
| 653 | char *lprint_ptr, *lprint_ptr2, **lprint_arg;
|
|---|
| 654 |
|
|---|
| 655 | void
|
|---|
| 656 | #ifdef __STDC__
|
|---|
| 657 | lprint(const char *format, ...)
|
|---|
| 658 | #else
|
|---|
| 659 | lprint(va_alist) va_dcl
|
|---|
| 660 | #endif
|
|---|
| 661 | {
|
|---|
| 662 | va_list args;
|
|---|
| 663 |
|
|---|
| 664 | #ifdef __STDC__
|
|---|
| 665 | va_start(args, format);
|
|---|
| 666 | #else
|
|---|
| 667 | char *format;
|
|---|
| 668 | va_start(args);
|
|---|
| 669 | format = va_arg(args, char *);
|
|---|
| 670 | #endif
|
|---|
| 671 | #if 0
|
|---|
| 672 | /* If we're printing to an sbuf, make sure there's enough room */
|
|---|
| 673 | /* XXX +100? */
|
|---|
| 674 | if (lprint_sb) {
|
|---|
| 675 | if ((lprint_ptr - lprint_sb->sb_wptr) >=
|
|---|
| 676 | (lprint_sb->sb_datalen - (strlen(format) + 100))) {
|
|---|
| 677 | int deltaw = lprint_sb->sb_wptr - lprint_sb->sb_data;
|
|---|
| 678 | int deltar = lprint_sb->sb_rptr - lprint_sb->sb_data;
|
|---|
| 679 | int deltap = lprint_ptr - lprint_sb->sb_data;
|
|---|
| 680 |
|
|---|
| 681 | lprint_sb->sb_data = (char *)realloc(lprint_sb->sb_data,
|
|---|
| 682 | lprint_sb->sb_datalen + TCP_SNDSPACE);
|
|---|
| 683 |
|
|---|
| 684 | /* Adjust all values */
|
|---|
| 685 | lprint_sb->sb_wptr = lprint_sb->sb_data + deltaw;
|
|---|
| 686 | lprint_sb->sb_rptr = lprint_sb->sb_data + deltar;
|
|---|
| 687 | lprint_ptr = lprint_sb->sb_data + deltap;
|
|---|
| 688 |
|
|---|
| 689 | lprint_sb->sb_datalen += TCP_SNDSPACE;
|
|---|
| 690 | }
|
|---|
| 691 | }
|
|---|
| 692 | #endif
|
|---|
| 693 | if (lprint_print)
|
|---|
| 694 | lprint_ptr += (*lprint_print)(*lprint_arg, format, args);
|
|---|
| 695 |
|
|---|
| 696 | /* Check if they want output to be logged to file as well */
|
|---|
| 697 | if (lfd) {
|
|---|
| 698 | /*
|
|---|
| 699 | * Remove \r's
|
|---|
| 700 | * otherwise you'll get ^M all over the file
|
|---|
| 701 | */
|
|---|
| 702 | int len = strlen(format);
|
|---|
| 703 | char *bptr1, *bptr2;
|
|---|
| 704 |
|
|---|
| 705 | bptr1 = bptr2 = strdup(format);
|
|---|
| 706 |
|
|---|
| 707 | while (len--) {
|
|---|
| 708 | if (*bptr1 == '\r')
|
|---|
| 709 | memcpy(bptr1, bptr1+1, len+1);
|
|---|
| 710 | else
|
|---|
| 711 | bptr1++;
|
|---|
| 712 | }
|
|---|
| 713 | vfprintf(lfd, bptr2, args);
|
|---|
| 714 | free(bptr2);
|
|---|
| 715 | }
|
|---|
| 716 | va_end(args);
|
|---|
| 717 | }
|
|---|
| 718 |
|
|---|
| 719 | void
|
|---|
| 720 | add_emu(buff)
|
|---|
| 721 | char *buff;
|
|---|
| 722 | {
|
|---|
| 723 | u_int lport, fport;
|
|---|
| 724 | u_int8_t tos = 0, emu = 0;
|
|---|
| 725 | char buff1[256], buff2[256], buff4[128];
|
|---|
| 726 | char *buff3 = buff4;
|
|---|
| 727 | struct emu_t *emup;
|
|---|
| 728 | struct socket *so;
|
|---|
| 729 |
|
|---|
| 730 | if (sscanf(buff, "%256s %256s", buff2, buff1) != 2) {
|
|---|
| 731 | lprint("Error: Bad arguments\r\n");
|
|---|
| 732 | return;
|
|---|
| 733 | }
|
|---|
| 734 |
|
|---|
| 735 | if (sscanf(buff1, "%d:%d", &lport, &fport) != 2) {
|
|---|
| 736 | lport = 0;
|
|---|
| 737 | if (sscanf(buff1, "%d", &fport) != 1) {
|
|---|
| 738 | lprint("Error: Bad first argument\r\n");
|
|---|
| 739 | return;
|
|---|
| 740 | }
|
|---|
| 741 | }
|
|---|
| 742 |
|
|---|
| 743 | if (sscanf(buff2, "%128[^:]:%128s", buff1, buff3) != 2) {
|
|---|
| 744 | buff3 = 0;
|
|---|
| 745 | if (sscanf(buff2, "%256s", buff1) != 1) {
|
|---|
| 746 | lprint("Error: Bad second argument\r\n");
|
|---|
| 747 | return;
|
|---|
| 748 | }
|
|---|
| 749 | }
|
|---|
| 750 |
|
|---|
| 751 | if (buff3) {
|
|---|
| 752 | if (strcmp(buff3, "lowdelay") == 0)
|
|---|
| 753 | tos = IPTOS_LOWDELAY;
|
|---|
| 754 | else if (strcmp(buff3, "throughput") == 0)
|
|---|
| 755 | tos = IPTOS_THROUGHPUT;
|
|---|
| 756 | else {
|
|---|
| 757 | lprint("Error: Expecting \"lowdelay\"/\"throughput\"\r\n");
|
|---|
| 758 | return;
|
|---|
| 759 | }
|
|---|
| 760 | }
|
|---|
| 761 |
|
|---|
| 762 | if (strcmp(buff1, "ftp") == 0)
|
|---|
| 763 | emu = EMU_FTP;
|
|---|
| 764 | else if (strcmp(buff1, "irc") == 0)
|
|---|
| 765 | emu = EMU_IRC;
|
|---|
| 766 | else if (strcmp(buff1, "none") == 0)
|
|---|
| 767 | emu = EMU_NONE; /* ie: no emulation */
|
|---|
| 768 | else {
|
|---|
| 769 | lprint("Error: Unknown service\r\n");
|
|---|
| 770 | return;
|
|---|
| 771 | }
|
|---|
| 772 |
|
|---|
| 773 | /* First, check that it isn't already emulated */
|
|---|
| 774 | for (emup = tcpemu; emup; emup = emup->next) {
|
|---|
| 775 | if (emup->lport == lport && emup->fport == fport) {
|
|---|
| 776 | lprint("Error: port already emulated\r\n");
|
|---|
| 777 | return;
|
|---|
| 778 | }
|
|---|
| 779 | }
|
|---|
| 780 |
|
|---|
| 781 | /* link it */
|
|---|
| 782 | emup = (struct emu_t *)malloc(sizeof (struct emu_t));
|
|---|
| 783 | emup->lport = (u_int16_t)lport;
|
|---|
| 784 | emup->fport = (u_int16_t)fport;
|
|---|
| 785 | emup->tos = tos;
|
|---|
| 786 | emup->emu = emu;
|
|---|
| 787 | emup->next = tcpemu;
|
|---|
| 788 | tcpemu = emup;
|
|---|
| 789 |
|
|---|
| 790 | /* And finally, mark all current sessions, if any, as being emulated */
|
|---|
| 791 | for (so = tcb.so_next; so != &tcb; so = so->so_next) {
|
|---|
| 792 | if ((lport && lport == ntohs(so->so_lport)) ||
|
|---|
| 793 | (fport && fport == ntohs(so->so_fport))) {
|
|---|
| 794 | if (emu)
|
|---|
| 795 | so->so_emu = emu;
|
|---|
| 796 | if (tos)
|
|---|
| 797 | so->so_iptos = tos;
|
|---|
| 798 | }
|
|---|
| 799 | }
|
|---|
| 800 |
|
|---|
| 801 | lprint("Adding emulation for %s to port %d/%d\r\n", buff1, emup->lport, emup->fport);
|
|---|
| 802 | }
|
|---|
| 803 | #endif /* !VBOX */
|
|---|
| 804 |
|
|---|
| 805 | #ifdef BAD_SPRINTF
|
|---|
| 806 |
|
|---|
| 807 | #undef vsprintf
|
|---|
| 808 | #undef sprintf
|
|---|
| 809 |
|
|---|
| 810 | /*
|
|---|
| 811 | * Some BSD-derived systems have a sprintf which returns char *
|
|---|
| 812 | */
|
|---|
| 813 |
|
|---|
| 814 | int
|
|---|
| 815 | vsprintf_len(string, format, args)
|
|---|
| 816 | char *string;
|
|---|
| 817 | const char *format;
|
|---|
| 818 | va_list args;
|
|---|
| 819 | {
|
|---|
| 820 | vsprintf(string, format, args);
|
|---|
| 821 | return strlen(string);
|
|---|
| 822 | }
|
|---|
| 823 |
|
|---|
| 824 | int
|
|---|
| 825 | #ifdef __STDC__
|
|---|
| 826 | sprintf_len(char *string, const char *format, ...)
|
|---|
| 827 | #else
|
|---|
| 828 | sprintf_len(va_alist) va_dcl
|
|---|
| 829 | #endif
|
|---|
| 830 | {
|
|---|
| 831 | va_list args;
|
|---|
| 832 | #ifdef __STDC__
|
|---|
| 833 | va_start(args, format);
|
|---|
| 834 | #else
|
|---|
| 835 | char *string;
|
|---|
| 836 | char *format;
|
|---|
| 837 | va_start(args);
|
|---|
| 838 | string = va_arg(args, char *);
|
|---|
| 839 | format = va_arg(args, char *);
|
|---|
| 840 | #endif
|
|---|
| 841 | vsprintf(string, format, args);
|
|---|
| 842 | return strlen(string);
|
|---|
| 843 | }
|
|---|
| 844 |
|
|---|
| 845 | #endif
|
|---|
| 846 |
|
|---|
| 847 | void
|
|---|
| 848 | u_sleep(usec)
|
|---|
| 849 | int usec;
|
|---|
| 850 | {
|
|---|
| 851 | struct timeval t;
|
|---|
| 852 | fd_set fdset;
|
|---|
| 853 |
|
|---|
| 854 | FD_ZERO(&fdset);
|
|---|
| 855 |
|
|---|
| 856 | t.tv_sec = 0;
|
|---|
| 857 | t.tv_usec = usec * 1000;
|
|---|
| 858 |
|
|---|
| 859 | select(0, &fdset, &fdset, &fdset, &t);
|
|---|
| 860 | }
|
|---|
| 861 |
|
|---|
| 862 | /*
|
|---|
| 863 | * Set fd blocking and non-blocking
|
|---|
| 864 | */
|
|---|
| 865 |
|
|---|
| 866 | void
|
|---|
| 867 | fd_nonblock(fd)
|
|---|
| 868 | int fd;
|
|---|
| 869 | {
|
|---|
| 870 | #ifdef FIONBIO
|
|---|
| 871 | int opt = 1;
|
|---|
| 872 |
|
|---|
| 873 | ioctlsocket(fd, FIONBIO, &opt);
|
|---|
| 874 | #else
|
|---|
| 875 | int opt;
|
|---|
| 876 |
|
|---|
| 877 | opt = fcntl(fd, F_GETFL, 0);
|
|---|
| 878 | opt |= O_NONBLOCK;
|
|---|
| 879 | fcntl(fd, F_SETFL, opt);
|
|---|
| 880 | #endif
|
|---|
| 881 | }
|
|---|
| 882 |
|
|---|
| 883 | void
|
|---|
| 884 | fd_block(fd)
|
|---|
| 885 | int fd;
|
|---|
| 886 | {
|
|---|
| 887 | #ifdef FIONBIO
|
|---|
| 888 | int opt = 0;
|
|---|
| 889 |
|
|---|
| 890 | ioctlsocket(fd, FIONBIO, &opt);
|
|---|
| 891 | #else
|
|---|
| 892 | int opt;
|
|---|
| 893 |
|
|---|
| 894 | opt = fcntl(fd, F_GETFL, 0);
|
|---|
| 895 | opt &= ~O_NONBLOCK;
|
|---|
| 896 | fcntl(fd, F_SETFL, opt);
|
|---|
| 897 | #endif
|
|---|
| 898 | }
|
|---|
| 899 |
|
|---|
| 900 |
|
|---|
| 901 | #if 0
|
|---|
| 902 | /*
|
|---|
| 903 | * invoke RSH
|
|---|
| 904 | */
|
|---|
| 905 | int
|
|---|
| 906 | rsh_exec(so,ns, user, host, args)
|
|---|
| 907 | struct socket *so;
|
|---|
| 908 | struct socket *ns;
|
|---|
| 909 | char *user;
|
|---|
| 910 | char *host;
|
|---|
| 911 | char *args;
|
|---|
| 912 | {
|
|---|
| 913 | int fd[2];
|
|---|
| 914 | int fd0[2];
|
|---|
| 915 | int s;
|
|---|
| 916 | char buff[256];
|
|---|
| 917 |
|
|---|
| 918 | DEBUG_CALL("rsh_exec");
|
|---|
| 919 | DEBUG_ARG("so = %lx", (long)so);
|
|---|
| 920 |
|
|---|
| 921 | if (pipe(fd)<0) {
|
|---|
| 922 | lprint("Error: pipe failed: %s\n", strerror(errno));
|
|---|
| 923 | return 0;
|
|---|
| 924 | }
|
|---|
| 925 | /* #ifdef HAVE_SOCKETPAIR */
|
|---|
| 926 | #if 1
|
|---|
| 927 | if (socketpair(PF_UNIX,SOCK_STREAM,0, fd0) == -1) {
|
|---|
| 928 | close(fd[0]);
|
|---|
| 929 | close(fd[1]);
|
|---|
| 930 | lprint("Error: openpty failed: %s\n", strerror(errno));
|
|---|
| 931 | return 0;
|
|---|
| 932 | }
|
|---|
| 933 | #else
|
|---|
| 934 | if (slirp_openpty(&fd0[0], &fd0[1]) == -1) {
|
|---|
| 935 | close(fd[0]);
|
|---|
| 936 | close(fd[1]);
|
|---|
| 937 | lprint("Error: openpty failed: %s\n", strerror(errno));
|
|---|
| 938 | return 0;
|
|---|
| 939 | }
|
|---|
| 940 | #endif
|
|---|
| 941 |
|
|---|
| 942 | switch(fork()) {
|
|---|
| 943 | case -1:
|
|---|
| 944 | lprint("Error: fork failed: %s\n", strerror(errno));
|
|---|
| 945 | close(fd[0]);
|
|---|
| 946 | close(fd[1]);
|
|---|
| 947 | close(fd0[0]);
|
|---|
| 948 | close(fd0[1]);
|
|---|
| 949 | return 0;
|
|---|
| 950 |
|
|---|
| 951 | case 0:
|
|---|
| 952 | close(fd[0]);
|
|---|
| 953 | close(fd0[0]);
|
|---|
| 954 |
|
|---|
| 955 | /* Set the DISPLAY */
|
|---|
| 956 | if (x_port >= 0) {
|
|---|
| 957 | #ifdef HAVE_SETENV
|
|---|
| 958 | sprintf(buff, "%s:%d.%d", inet_ntoa(our_addr), x_port, x_screen);
|
|---|
| 959 | setenv("DISPLAY", buff, 1);
|
|---|
| 960 | #else
|
|---|
| 961 | sprintf(buff, "DISPLAY=%s:%d.%d", inet_ntoa(our_addr), x_port, x_screen);
|
|---|
| 962 | putenv(buff);
|
|---|
| 963 | #endif
|
|---|
| 964 | }
|
|---|
| 965 |
|
|---|
| 966 | dup2(fd0[1], 0);
|
|---|
| 967 | dup2(fd0[1], 1);
|
|---|
| 968 | dup2(fd[1], 2);
|
|---|
| 969 | for (s = 3; s <= 255; s++)
|
|---|
| 970 | close(s);
|
|---|
| 971 |
|
|---|
| 972 | execlp("rsh","rsh","-l", user, host, args, NULL);
|
|---|
| 973 |
|
|---|
| 974 | /* Ooops, failed, let's tell the user why */
|
|---|
| 975 |
|
|---|
| 976 | sprintf(buff, "Error: execlp of %s failed: %s\n",
|
|---|
| 977 | "rsh", strerror(errno));
|
|---|
| 978 | write(2, buff, strlen(buff)+1);
|
|---|
| 979 | close(0); close(1); close(2); /* XXX */
|
|---|
| 980 | exit(1);
|
|---|
| 981 |
|
|---|
| 982 | default:
|
|---|
| 983 | close(fd[1]);
|
|---|
| 984 | close(fd0[1]);
|
|---|
| 985 | ns->s=fd[0];
|
|---|
| 986 | so->s=fd0[0];
|
|---|
| 987 |
|
|---|
| 988 | return 1;
|
|---|
| 989 | }
|
|---|
| 990 | }
|
|---|
| 991 | #endif
|
|---|
