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1 | f0cbd3ec | bellard | /*
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2 | f0cbd3ec | bellard | * Copyright (c) 1982, 1986, 1988, 1990, 1993
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3 | f0cbd3ec | bellard | * The Regents of the University of California. All rights reserved.
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4 | f0cbd3ec | bellard | *
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5 | f0cbd3ec | bellard | * Redistribution and use in source and binary forms, with or without
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6 | f0cbd3ec | bellard | * modification, are permitted provided that the following conditions
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7 | f0cbd3ec | bellard | * are met:
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8 | f0cbd3ec | bellard | * 1. Redistributions of source code must retain the above copyright
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9 | f0cbd3ec | bellard | * notice, this list of conditions and the following disclaimer.
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10 | f0cbd3ec | bellard | * 2. Redistributions in binary form must reproduce the above copyright
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11 | f0cbd3ec | bellard | * notice, this list of conditions and the following disclaimer in the
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12 | f0cbd3ec | bellard | * documentation and/or other materials provided with the distribution.
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13 | f0cbd3ec | bellard | * 3. All advertising materials mentioning features or use of this software
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14 | f0cbd3ec | bellard | * must display the following acknowledgement:
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15 | f0cbd3ec | bellard | * This product includes software developed by the University of
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16 | f0cbd3ec | bellard | * California, Berkeley and its contributors.
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17 | f0cbd3ec | bellard | * 4. Neither the name of the University nor the names of its contributors
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18 | f0cbd3ec | bellard | * may be used to endorse or promote products derived from this software
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19 | f0cbd3ec | bellard | * without specific prior written permission.
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20 | f0cbd3ec | bellard | *
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21 | f0cbd3ec | bellard | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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22 | f0cbd3ec | bellard | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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23 | f0cbd3ec | bellard | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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24 | f0cbd3ec | bellard | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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25 | f0cbd3ec | bellard | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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26 | f0cbd3ec | bellard | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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27 | f0cbd3ec | bellard | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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28 | f0cbd3ec | bellard | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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29 | f0cbd3ec | bellard | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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30 | f0cbd3ec | bellard | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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31 | f0cbd3ec | bellard | * SUCH DAMAGE.
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32 | f0cbd3ec | bellard | *
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33 | f0cbd3ec | bellard | * @(#)tcp_subr.c 8.1 (Berkeley) 6/10/93
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34 | f0cbd3ec | bellard | * tcp_subr.c,v 1.5 1994/10/08 22:39:58 phk Exp
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35 | f0cbd3ec | bellard | */
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36 | f0cbd3ec | bellard | |
37 | f0cbd3ec | bellard | /*
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38 | f0cbd3ec | bellard | * Changes and additions relating to SLiRP
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39 | f0cbd3ec | bellard | * Copyright (c) 1995 Danny Gasparovski.
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40 | f0cbd3ec | bellard | *
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41 | f0cbd3ec | bellard | * Please read the file COPYRIGHT for the
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42 | f0cbd3ec | bellard | * terms and conditions of the copyright.
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43 | f0cbd3ec | bellard | */
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44 | f0cbd3ec | bellard | |
45 | f0cbd3ec | bellard | #define WANT_SYS_IOCTL_H
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46 | f0cbd3ec | bellard | #include <slirp.h> |
47 | f0cbd3ec | bellard | |
48 | f0cbd3ec | bellard | /* patchable/settable parameters for tcp */
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49 | f0cbd3ec | bellard | int tcp_mssdflt = TCP_MSS;
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50 | f0cbd3ec | bellard | int tcp_rttdflt = TCPTV_SRTTDFLT / PR_SLOWHZ;
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51 | f0cbd3ec | bellard | int tcp_do_rfc1323 = 0; /* Don't do rfc1323 performance enhancements */ |
52 | f0cbd3ec | bellard | int tcp_rcvspace; /* You may want to change this */ |
53 | f0cbd3ec | bellard | int tcp_sndspace; /* Keep small if you have an error prone link */ |
54 | f0cbd3ec | bellard | |
55 | f0cbd3ec | bellard | /*
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56 | f0cbd3ec | bellard | * Tcp initialization
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57 | f0cbd3ec | bellard | */
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58 | f0cbd3ec | bellard | void
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59 | f0cbd3ec | bellard | tcp_init() |
60 | f0cbd3ec | bellard | { |
61 | f0cbd3ec | bellard | tcp_iss = 1; /* wrong */ |
62 | f0cbd3ec | bellard | tcb.so_next = tcb.so_prev = &tcb; |
63 | f0cbd3ec | bellard | |
64 | f0cbd3ec | bellard | /* tcp_rcvspace = our Window we advertise to the remote */
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65 | f0cbd3ec | bellard | tcp_rcvspace = TCP_RCVSPACE; |
66 | f0cbd3ec | bellard | tcp_sndspace = TCP_SNDSPACE; |
67 | f0cbd3ec | bellard | |
68 | f0cbd3ec | bellard | /* Make sure tcp_sndspace is at least 2*MSS */
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69 | f0cbd3ec | bellard | if (tcp_sndspace < 2*(min(if_mtu, if_mru) - sizeof(struct tcpiphdr))) |
70 | f0cbd3ec | bellard | tcp_sndspace = 2*(min(if_mtu, if_mru) - sizeof(struct tcpiphdr)); |
71 | f0cbd3ec | bellard | } |
72 | f0cbd3ec | bellard | |
73 | f0cbd3ec | bellard | /*
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74 | f0cbd3ec | bellard | * Create template to be used to send tcp packets on a connection.
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75 | f0cbd3ec | bellard | * Call after host entry created, fills
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76 | f0cbd3ec | bellard | * in a skeletal tcp/ip header, minimizing the amount of work
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77 | f0cbd3ec | bellard | * necessary when the connection is used.
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78 | f0cbd3ec | bellard | */
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79 | f0cbd3ec | bellard | /* struct tcpiphdr * */
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80 | f0cbd3ec | bellard | void
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81 | f0cbd3ec | bellard | tcp_template(tp) |
82 | f0cbd3ec | bellard | struct tcpcb *tp;
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83 | f0cbd3ec | bellard | { |
84 | f0cbd3ec | bellard | struct socket *so = tp->t_socket;
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85 | f0cbd3ec | bellard | register struct tcpiphdr *n = &tp->t_template; |
86 | f0cbd3ec | bellard | |
87 | f0cbd3ec | bellard | n->ti_next = n->ti_prev = 0;
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88 | f0cbd3ec | bellard | n->ti_x1 = 0;
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89 | f0cbd3ec | bellard | n->ti_pr = IPPROTO_TCP; |
90 | f0cbd3ec | bellard | n->ti_len = htons(sizeof (struct tcpiphdr) - sizeof (struct ip)); |
91 | f0cbd3ec | bellard | n->ti_src = so->so_faddr; |
92 | f0cbd3ec | bellard | n->ti_dst = so->so_laddr; |
93 | f0cbd3ec | bellard | n->ti_sport = so->so_fport; |
94 | f0cbd3ec | bellard | n->ti_dport = so->so_lport; |
95 | f0cbd3ec | bellard | |
96 | f0cbd3ec | bellard | n->ti_seq = 0;
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97 | f0cbd3ec | bellard | n->ti_ack = 0;
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98 | f0cbd3ec | bellard | n->ti_x2 = 0;
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99 | f0cbd3ec | bellard | n->ti_off = 5;
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100 | f0cbd3ec | bellard | n->ti_flags = 0;
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101 | f0cbd3ec | bellard | n->ti_win = 0;
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102 | f0cbd3ec | bellard | n->ti_sum = 0;
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103 | f0cbd3ec | bellard | n->ti_urp = 0;
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104 | f0cbd3ec | bellard | } |
105 | f0cbd3ec | bellard | |
106 | f0cbd3ec | bellard | /*
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107 | f0cbd3ec | bellard | * Send a single message to the TCP at address specified by
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108 | f0cbd3ec | bellard | * the given TCP/IP header. If m == 0, then we make a copy
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109 | f0cbd3ec | bellard | * of the tcpiphdr at ti and send directly to the addressed host.
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110 | f0cbd3ec | bellard | * This is used to force keep alive messages out using the TCP
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111 | f0cbd3ec | bellard | * template for a connection tp->t_template. If flags are given
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112 | f0cbd3ec | bellard | * then we send a message back to the TCP which originated the
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113 | f0cbd3ec | bellard | * segment ti, and discard the mbuf containing it and any other
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114 | f0cbd3ec | bellard | * attached mbufs.
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115 | f0cbd3ec | bellard | *
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116 | f0cbd3ec | bellard | * In any case the ack and sequence number of the transmitted
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117 | f0cbd3ec | bellard | * segment are as specified by the parameters.
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118 | f0cbd3ec | bellard | */
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119 | f0cbd3ec | bellard | void
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120 | f0cbd3ec | bellard | tcp_respond(tp, ti, m, ack, seq, flags) |
121 | f0cbd3ec | bellard | struct tcpcb *tp;
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122 | f0cbd3ec | bellard | register struct tcpiphdr *ti; |
123 | f0cbd3ec | bellard | register struct mbuf *m; |
124 | f0cbd3ec | bellard | tcp_seq ack, seq; |
125 | f0cbd3ec | bellard | int flags;
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126 | f0cbd3ec | bellard | { |
127 | f0cbd3ec | bellard | register int tlen; |
128 | f0cbd3ec | bellard | int win = 0; |
129 | f0cbd3ec | bellard | |
130 | f0cbd3ec | bellard | DEBUG_CALL("tcp_respond");
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131 | f0cbd3ec | bellard | DEBUG_ARG("tp = %lx", (long)tp); |
132 | f0cbd3ec | bellard | DEBUG_ARG("ti = %lx", (long)ti); |
133 | f0cbd3ec | bellard | DEBUG_ARG("m = %lx", (long)m); |
134 | f0cbd3ec | bellard | DEBUG_ARG("ack = %u", ack);
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135 | f0cbd3ec | bellard | DEBUG_ARG("seq = %u", seq);
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136 | f0cbd3ec | bellard | DEBUG_ARG("flags = %x", flags);
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137 | f0cbd3ec | bellard | |
138 | f0cbd3ec | bellard | if (tp)
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139 | f0cbd3ec | bellard | win = sbspace(&tp->t_socket->so_rcv); |
140 | f0cbd3ec | bellard | if (m == 0) { |
141 | f0cbd3ec | bellard | if ((m = m_get()) == NULL) |
142 | f0cbd3ec | bellard | return;
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143 | f0cbd3ec | bellard | #ifdef TCP_COMPAT_42
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144 | f0cbd3ec | bellard | tlen = 1;
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145 | f0cbd3ec | bellard | #else
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146 | f0cbd3ec | bellard | tlen = 0;
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147 | f0cbd3ec | bellard | #endif
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148 | f0cbd3ec | bellard | m->m_data += if_maxlinkhdr; |
149 | f0cbd3ec | bellard | *mtod(m, struct tcpiphdr *) = *ti;
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150 | f0cbd3ec | bellard | ti = mtod(m, struct tcpiphdr *);
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151 | f0cbd3ec | bellard | flags = TH_ACK; |
152 | f0cbd3ec | bellard | } else {
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153 | f0cbd3ec | bellard | /*
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154 | f0cbd3ec | bellard | * ti points into m so the next line is just making
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155 | f0cbd3ec | bellard | * the mbuf point to ti
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156 | f0cbd3ec | bellard | */
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157 | f0cbd3ec | bellard | m->m_data = (caddr_t)ti; |
158 | f0cbd3ec | bellard | |
159 | f0cbd3ec | bellard | m->m_len = sizeof (struct tcpiphdr); |
160 | f0cbd3ec | bellard | tlen = 0;
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161 | f0cbd3ec | bellard | #define xchg(a,b,type) { type t; t=a; a=b; b=t; }
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162 | f0cbd3ec | bellard | xchg(ti->ti_dst.s_addr, ti->ti_src.s_addr, u_int32_t); |
163 | f0cbd3ec | bellard | xchg(ti->ti_dport, ti->ti_sport, u_int16_t); |
164 | f0cbd3ec | bellard | #undef xchg
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165 | f0cbd3ec | bellard | } |
166 | f0cbd3ec | bellard | ti->ti_len = htons((u_short)(sizeof (struct tcphdr) + tlen)); |
167 | f0cbd3ec | bellard | tlen += sizeof (struct tcpiphdr); |
168 | f0cbd3ec | bellard | m->m_len = tlen; |
169 | f0cbd3ec | bellard | |
170 | f0cbd3ec | bellard | ti->ti_next = ti->ti_prev = 0;
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171 | f0cbd3ec | bellard | ti->ti_x1 = 0;
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172 | f0cbd3ec | bellard | ti->ti_seq = htonl(seq); |
173 | f0cbd3ec | bellard | ti->ti_ack = htonl(ack); |
174 | f0cbd3ec | bellard | ti->ti_x2 = 0;
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175 | f0cbd3ec | bellard | ti->ti_off = sizeof (struct tcphdr) >> 2; |
176 | f0cbd3ec | bellard | ti->ti_flags = flags; |
177 | f0cbd3ec | bellard | if (tp)
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178 | f0cbd3ec | bellard | ti->ti_win = htons((u_int16_t) (win >> tp->rcv_scale)); |
179 | f0cbd3ec | bellard | else
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180 | f0cbd3ec | bellard | ti->ti_win = htons((u_int16_t)win); |
181 | f0cbd3ec | bellard | ti->ti_urp = 0;
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182 | f0cbd3ec | bellard | ti->ti_sum = 0;
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183 | f0cbd3ec | bellard | ti->ti_sum = cksum(m, tlen); |
184 | f0cbd3ec | bellard | ((struct ip *)ti)->ip_len = tlen;
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185 | f0cbd3ec | bellard | |
186 | f0cbd3ec | bellard | if(flags & TH_RST)
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187 | f0cbd3ec | bellard | ((struct ip *)ti)->ip_ttl = MAXTTL;
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188 | f0cbd3ec | bellard | else
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189 | f0cbd3ec | bellard | ((struct ip *)ti)->ip_ttl = ip_defttl;
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190 | f0cbd3ec | bellard | |
191 | f0cbd3ec | bellard | (void) ip_output((struct socket *)0, m); |
192 | f0cbd3ec | bellard | } |
193 | f0cbd3ec | bellard | |
194 | f0cbd3ec | bellard | /*
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195 | f0cbd3ec | bellard | * Create a new TCP control block, making an
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196 | f0cbd3ec | bellard | * empty reassembly queue and hooking it to the argument
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197 | f0cbd3ec | bellard | * protocol control block.
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198 | f0cbd3ec | bellard | */
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199 | f0cbd3ec | bellard | struct tcpcb *
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200 | f0cbd3ec | bellard | tcp_newtcpcb(so) |
201 | f0cbd3ec | bellard | struct socket *so;
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202 | f0cbd3ec | bellard | { |
203 | f0cbd3ec | bellard | register struct tcpcb *tp; |
204 | f0cbd3ec | bellard | |
205 | f0cbd3ec | bellard | tp = (struct tcpcb *)malloc(sizeof(*tp)); |
206 | f0cbd3ec | bellard | if (tp == NULL) |
207 | f0cbd3ec | bellard | return ((struct tcpcb *)0); |
208 | f0cbd3ec | bellard | |
209 | f0cbd3ec | bellard | memset((char *) tp, 0, sizeof(struct tcpcb)); |
210 | f0cbd3ec | bellard | tp->seg_next = tp->seg_prev = (tcpiphdrp_32)tp; |
211 | f0cbd3ec | bellard | tp->t_maxseg = tcp_mssdflt; |
212 | f0cbd3ec | bellard | |
213 | f0cbd3ec | bellard | tp->t_flags = tcp_do_rfc1323 ? (TF_REQ_SCALE|TF_REQ_TSTMP) : 0;
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214 | f0cbd3ec | bellard | tp->t_socket = so; |
215 | f0cbd3ec | bellard | |
216 | f0cbd3ec | bellard | /*
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217 | f0cbd3ec | bellard | * Init srtt to TCPTV_SRTTBASE (0), so we can tell that we have no
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218 | f0cbd3ec | bellard | * rtt estimate. Set rttvar so that srtt + 2 * rttvar gives
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219 | f0cbd3ec | bellard | * reasonable initial retransmit time.
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220 | f0cbd3ec | bellard | */
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221 | f0cbd3ec | bellard | tp->t_srtt = TCPTV_SRTTBASE; |
222 | f0cbd3ec | bellard | tp->t_rttvar = tcp_rttdflt * PR_SLOWHZ << 2;
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223 | f0cbd3ec | bellard | tp->t_rttmin = TCPTV_MIN; |
224 | f0cbd3ec | bellard | |
225 | f0cbd3ec | bellard | TCPT_RANGESET(tp->t_rxtcur, |
226 | f0cbd3ec | bellard | ((TCPTV_SRTTBASE >> 2) + (TCPTV_SRTTDFLT << 2)) >> 1, |
227 | f0cbd3ec | bellard | TCPTV_MIN, TCPTV_REXMTMAX); |
228 | f0cbd3ec | bellard | |
229 | f0cbd3ec | bellard | tp->snd_cwnd = TCP_MAXWIN << TCP_MAX_WINSHIFT; |
230 | f0cbd3ec | bellard | tp->snd_ssthresh = TCP_MAXWIN << TCP_MAX_WINSHIFT; |
231 | f0cbd3ec | bellard | tp->t_state = TCPS_CLOSED; |
232 | f0cbd3ec | bellard | |
233 | f0cbd3ec | bellard | so->so_tcpcb = tp; |
234 | f0cbd3ec | bellard | |
235 | f0cbd3ec | bellard | return (tp);
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236 | f0cbd3ec | bellard | } |
237 | f0cbd3ec | bellard | |
238 | f0cbd3ec | bellard | /*
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239 | f0cbd3ec | bellard | * Drop a TCP connection, reporting
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240 | f0cbd3ec | bellard | * the specified error. If connection is synchronized,
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241 | f0cbd3ec | bellard | * then send a RST to peer.
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242 | f0cbd3ec | bellard | */
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243 | 9fafc9ea | bellard | struct tcpcb *tcp_drop(struct tcpcb *tp, int err) |
244 | f0cbd3ec | bellard | { |
245 | f0cbd3ec | bellard | /* tcp_drop(tp, errno)
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246 | f0cbd3ec | bellard | register struct tcpcb *tp;
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247 | f0cbd3ec | bellard | int errno;
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248 | f0cbd3ec | bellard | {
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249 | f0cbd3ec | bellard | */
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250 | f0cbd3ec | bellard | |
251 | f0cbd3ec | bellard | DEBUG_CALL("tcp_drop");
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252 | f0cbd3ec | bellard | DEBUG_ARG("tp = %lx", (long)tp); |
253 | f0cbd3ec | bellard | DEBUG_ARG("errno = %d", errno);
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254 | f0cbd3ec | bellard | |
255 | f0cbd3ec | bellard | if (TCPS_HAVERCVDSYN(tp->t_state)) {
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256 | f0cbd3ec | bellard | tp->t_state = TCPS_CLOSED; |
257 | f0cbd3ec | bellard | (void) tcp_output(tp);
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258 | f0cbd3ec | bellard | tcpstat.tcps_drops++; |
259 | f0cbd3ec | bellard | } else
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260 | f0cbd3ec | bellard | tcpstat.tcps_conndrops++; |
261 | f0cbd3ec | bellard | /* if (errno == ETIMEDOUT && tp->t_softerror)
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262 | f0cbd3ec | bellard | * errno = tp->t_softerror;
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263 | f0cbd3ec | bellard | */
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264 | f0cbd3ec | bellard | /* so->so_error = errno; */
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265 | f0cbd3ec | bellard | return (tcp_close(tp));
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266 | f0cbd3ec | bellard | } |
267 | f0cbd3ec | bellard | |
268 | f0cbd3ec | bellard | /*
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269 | f0cbd3ec | bellard | * Close a TCP control block:
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270 | f0cbd3ec | bellard | * discard all space held by the tcp
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271 | f0cbd3ec | bellard | * discard internet protocol block
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272 | f0cbd3ec | bellard | * wake up any sleepers
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273 | f0cbd3ec | bellard | */
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274 | f0cbd3ec | bellard | struct tcpcb *
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275 | f0cbd3ec | bellard | tcp_close(tp) |
276 | f0cbd3ec | bellard | register struct tcpcb *tp; |
277 | f0cbd3ec | bellard | { |
278 | f0cbd3ec | bellard | register struct tcpiphdr *t; |
279 | f0cbd3ec | bellard | struct socket *so = tp->t_socket;
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280 | f0cbd3ec | bellard | register struct mbuf *m; |
281 | f0cbd3ec | bellard | |
282 | f0cbd3ec | bellard | DEBUG_CALL("tcp_close");
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283 | f0cbd3ec | bellard | DEBUG_ARG("tp = %lx", (long )tp); |
284 | f0cbd3ec | bellard | |
285 | f0cbd3ec | bellard | /* free the reassembly queue, if any */
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286 | f0cbd3ec | bellard | t = (struct tcpiphdr *) tp->seg_next;
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287 | f0cbd3ec | bellard | while (t != (struct tcpiphdr *)tp) { |
288 | f0cbd3ec | bellard | t = (struct tcpiphdr *)t->ti_next;
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289 | f0cbd3ec | bellard | m = (struct mbuf *) REASS_MBUF((struct tcpiphdr *)t->ti_prev); |
290 | f0cbd3ec | bellard | remque_32((struct tcpiphdr *) t->ti_prev);
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291 | f0cbd3ec | bellard | m_freem(m); |
292 | f0cbd3ec | bellard | } |
293 | f0cbd3ec | bellard | /* It's static */
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294 | f0cbd3ec | bellard | /* if (tp->t_template)
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295 | f0cbd3ec | bellard | * (void) m_free(dtom(tp->t_template));
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296 | f0cbd3ec | bellard | */
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297 | f0cbd3ec | bellard | /* free(tp, M_PCB); */
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298 | f0cbd3ec | bellard | free(tp); |
299 | f0cbd3ec | bellard | so->so_tcpcb = 0;
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300 | f0cbd3ec | bellard | soisfdisconnected(so); |
301 | f0cbd3ec | bellard | /* clobber input socket cache if we're closing the cached connection */
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302 | f0cbd3ec | bellard | if (so == tcp_last_so)
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303 | f0cbd3ec | bellard | tcp_last_so = &tcb; |
304 | 379ff53d | bellard | closesocket(so->s); |
305 | f0cbd3ec | bellard | sbfree(&so->so_rcv); |
306 | f0cbd3ec | bellard | sbfree(&so->so_snd); |
307 | f0cbd3ec | bellard | sofree(so); |
308 | f0cbd3ec | bellard | tcpstat.tcps_closed++; |
309 | f0cbd3ec | bellard | return ((struct tcpcb *)0); |
310 | f0cbd3ec | bellard | } |
311 | f0cbd3ec | bellard | |
312 | f0cbd3ec | bellard | void
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313 | f0cbd3ec | bellard | tcp_drain() |
314 | f0cbd3ec | bellard | { |
315 | f0cbd3ec | bellard | /* XXX */
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316 | f0cbd3ec | bellard | } |
317 | f0cbd3ec | bellard | |
318 | f0cbd3ec | bellard | /*
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319 | f0cbd3ec | bellard | * When a source quench is received, close congestion window
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320 | f0cbd3ec | bellard | * to one segment. We will gradually open it again as we proceed.
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321 | f0cbd3ec | bellard | */
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322 | f0cbd3ec | bellard | |
323 | f0cbd3ec | bellard | #ifdef notdef
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324 | f0cbd3ec | bellard | |
325 | f0cbd3ec | bellard | void
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326 | f0cbd3ec | bellard | tcp_quench(i, errno) |
327 | f0cbd3ec | bellard | |
328 | f0cbd3ec | bellard | int errno;
|
329 | f0cbd3ec | bellard | { |
330 | f0cbd3ec | bellard | struct tcpcb *tp = intotcpcb(inp);
|
331 | f0cbd3ec | bellard | |
332 | f0cbd3ec | bellard | if (tp)
|
333 | f0cbd3ec | bellard | tp->snd_cwnd = tp->t_maxseg; |
334 | f0cbd3ec | bellard | } |
335 | f0cbd3ec | bellard | |
336 | f0cbd3ec | bellard | #endif /* notdef */ |
337 | f0cbd3ec | bellard | |
338 | f0cbd3ec | bellard | /*
|
339 | f0cbd3ec | bellard | * TCP protocol interface to socket abstraction.
|
340 | f0cbd3ec | bellard | */
|
341 | f0cbd3ec | bellard | |
342 | f0cbd3ec | bellard | /*
|
343 | f0cbd3ec | bellard | * User issued close, and wish to trail through shutdown states:
|
344 | f0cbd3ec | bellard | * if never received SYN, just forget it. If got a SYN from peer,
|
345 | f0cbd3ec | bellard | * but haven't sent FIN, then go to FIN_WAIT_1 state to send peer a FIN.
|
346 | f0cbd3ec | bellard | * If already got a FIN from peer, then almost done; go to LAST_ACK
|
347 | f0cbd3ec | bellard | * state. In all other cases, have already sent FIN to peer (e.g.
|
348 | f0cbd3ec | bellard | * after PRU_SHUTDOWN), and just have to play tedious game waiting
|
349 | f0cbd3ec | bellard | * for peer to send FIN or not respond to keep-alives, etc.
|
350 | f0cbd3ec | bellard | * We can let the user exit from the close as soon as the FIN is acked.
|
351 | f0cbd3ec | bellard | */
|
352 | f0cbd3ec | bellard | void
|
353 | f0cbd3ec | bellard | tcp_sockclosed(tp) |
354 | f0cbd3ec | bellard | struct tcpcb *tp;
|
355 | f0cbd3ec | bellard | { |
356 | f0cbd3ec | bellard | |
357 | f0cbd3ec | bellard | DEBUG_CALL("tcp_sockclosed");
|
358 | f0cbd3ec | bellard | DEBUG_ARG("tp = %lx", (long)tp); |
359 | f0cbd3ec | bellard | |
360 | f0cbd3ec | bellard | switch (tp->t_state) {
|
361 | f0cbd3ec | bellard | |
362 | f0cbd3ec | bellard | case TCPS_CLOSED:
|
363 | f0cbd3ec | bellard | case TCPS_LISTEN:
|
364 | f0cbd3ec | bellard | case TCPS_SYN_SENT:
|
365 | f0cbd3ec | bellard | tp->t_state = TCPS_CLOSED; |
366 | f0cbd3ec | bellard | tp = tcp_close(tp); |
367 | f0cbd3ec | bellard | break;
|
368 | f0cbd3ec | bellard | |
369 | f0cbd3ec | bellard | case TCPS_SYN_RECEIVED:
|
370 | f0cbd3ec | bellard | case TCPS_ESTABLISHED:
|
371 | f0cbd3ec | bellard | tp->t_state = TCPS_FIN_WAIT_1; |
372 | f0cbd3ec | bellard | break;
|
373 | f0cbd3ec | bellard | |
374 | f0cbd3ec | bellard | case TCPS_CLOSE_WAIT:
|
375 | f0cbd3ec | bellard | tp->t_state = TCPS_LAST_ACK; |
376 | f0cbd3ec | bellard | break;
|
377 | f0cbd3ec | bellard | } |
378 | f0cbd3ec | bellard | /* soisfdisconnecting(tp->t_socket); */
|
379 | f0cbd3ec | bellard | if (tp && tp->t_state >= TCPS_FIN_WAIT_2)
|
380 | f0cbd3ec | bellard | soisfdisconnected(tp->t_socket); |
381 | f0cbd3ec | bellard | if (tp)
|
382 | f0cbd3ec | bellard | tcp_output(tp); |
383 | f0cbd3ec | bellard | } |
384 | f0cbd3ec | bellard | |
385 | f0cbd3ec | bellard | /*
|
386 | f0cbd3ec | bellard | * Connect to a host on the Internet
|
387 | f0cbd3ec | bellard | * Called by tcp_input
|
388 | f0cbd3ec | bellard | * Only do a connect, the tcp fields will be set in tcp_input
|
389 | f0cbd3ec | bellard | * return 0 if there's a result of the connect,
|
390 | f0cbd3ec | bellard | * else return -1 means we're still connecting
|
391 | f0cbd3ec | bellard | * The return value is almost always -1 since the socket is
|
392 | f0cbd3ec | bellard | * nonblocking. Connect returns after the SYN is sent, and does
|
393 | f0cbd3ec | bellard | * not wait for ACK+SYN.
|
394 | f0cbd3ec | bellard | */
|
395 | f0cbd3ec | bellard | int tcp_fconnect(so)
|
396 | f0cbd3ec | bellard | struct socket *so;
|
397 | f0cbd3ec | bellard | { |
398 | f0cbd3ec | bellard | int ret=0; |
399 | f0cbd3ec | bellard | |
400 | f0cbd3ec | bellard | DEBUG_CALL("tcp_fconnect");
|
401 | f0cbd3ec | bellard | DEBUG_ARG("so = %lx", (long )so); |
402 | f0cbd3ec | bellard | |
403 | f0cbd3ec | bellard | if( (ret=so->s=socket(AF_INET,SOCK_STREAM,0)) >= 0) { |
404 | f0cbd3ec | bellard | int opt, s=so->s;
|
405 | f0cbd3ec | bellard | struct sockaddr_in addr;
|
406 | f0cbd3ec | bellard | |
407 | f0cbd3ec | bellard | fd_nonblock(s); |
408 | f0cbd3ec | bellard | opt = 1;
|
409 | f0cbd3ec | bellard | setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&opt,sizeof(opt )); |
410 | f0cbd3ec | bellard | opt = 1;
|
411 | f0cbd3ec | bellard | setsockopt(s,SOL_SOCKET,SO_OOBINLINE,(char *)&opt,sizeof(opt )); |
412 | f0cbd3ec | bellard | |
413 | f0cbd3ec | bellard | addr.sin_family = AF_INET; |
414 | f0cbd3ec | bellard | if ((so->so_faddr.s_addr & htonl(0xffffff00)) == special_addr.s_addr) { |
415 | f0cbd3ec | bellard | /* It's an alias */
|
416 | f0cbd3ec | bellard | switch(ntohl(so->so_faddr.s_addr) & 0xff) { |
417 | f0cbd3ec | bellard | case CTL_DNS:
|
418 | f0cbd3ec | bellard | addr.sin_addr = dns_addr; |
419 | f0cbd3ec | bellard | break;
|
420 | f0cbd3ec | bellard | case CTL_ALIAS:
|
421 | f0cbd3ec | bellard | default:
|
422 | f0cbd3ec | bellard | addr.sin_addr = loopback_addr; |
423 | f0cbd3ec | bellard | break;
|
424 | f0cbd3ec | bellard | } |
425 | f0cbd3ec | bellard | } else
|
426 | f0cbd3ec | bellard | addr.sin_addr = so->so_faddr; |
427 | f0cbd3ec | bellard | addr.sin_port = so->so_fport; |
428 | f0cbd3ec | bellard | |
429 | f0cbd3ec | bellard | DEBUG_MISC((dfd, " connect()ing, addr.sin_port=%d, "
|
430 | f0cbd3ec | bellard | "addr.sin_addr.s_addr=%.16s\n",
|
431 | f0cbd3ec | bellard | ntohs(addr.sin_port), inet_ntoa(addr.sin_addr))); |
432 | f0cbd3ec | bellard | /* We don't care what port we get */
|
433 | f0cbd3ec | bellard | ret = connect(s,(struct sockaddr *)&addr,sizeof (addr)); |
434 | f0cbd3ec | bellard | |
435 | f0cbd3ec | bellard | /*
|
436 | f0cbd3ec | bellard | * If it's not in progress, it failed, so we just return 0,
|
437 | f0cbd3ec | bellard | * without clearing SS_NOFDREF
|
438 | f0cbd3ec | bellard | */
|
439 | f0cbd3ec | bellard | soisfconnecting(so); |
440 | f0cbd3ec | bellard | } |
441 | f0cbd3ec | bellard | |
442 | f0cbd3ec | bellard | return(ret);
|
443 | f0cbd3ec | bellard | } |
444 | f0cbd3ec | bellard | |
445 | f0cbd3ec | bellard | /*
|
446 | f0cbd3ec | bellard | * Accept the socket and connect to the local-host
|
447 | f0cbd3ec | bellard | *
|
448 | f0cbd3ec | bellard | * We have a problem. The correct thing to do would be
|
449 | f0cbd3ec | bellard | * to first connect to the local-host, and only if the
|
450 | f0cbd3ec | bellard | * connection is accepted, then do an accept() here.
|
451 | f0cbd3ec | bellard | * But, a) we need to know who's trying to connect
|
452 | f0cbd3ec | bellard | * to the socket to be able to SYN the local-host, and
|
453 | f0cbd3ec | bellard | * b) we are already connected to the foreign host by
|
454 | f0cbd3ec | bellard | * the time it gets to accept(), so... We simply accept
|
455 | f0cbd3ec | bellard | * here and SYN the local-host.
|
456 | f0cbd3ec | bellard | */
|
457 | f0cbd3ec | bellard | void
|
458 | f0cbd3ec | bellard | tcp_connect(inso) |
459 | f0cbd3ec | bellard | struct socket *inso;
|
460 | f0cbd3ec | bellard | { |
461 | f0cbd3ec | bellard | struct socket *so;
|
462 | f0cbd3ec | bellard | struct sockaddr_in addr;
|
463 | f0cbd3ec | bellard | int addrlen = sizeof(struct sockaddr_in); |
464 | f0cbd3ec | bellard | struct tcpcb *tp;
|
465 | f0cbd3ec | bellard | int s, opt;
|
466 | f0cbd3ec | bellard | |
467 | f0cbd3ec | bellard | DEBUG_CALL("tcp_connect");
|
468 | f0cbd3ec | bellard | DEBUG_ARG("inso = %lx", (long)inso); |
469 | f0cbd3ec | bellard | |
470 | f0cbd3ec | bellard | /*
|
471 | f0cbd3ec | bellard | * If it's an SS_ACCEPTONCE socket, no need to socreate()
|
472 | f0cbd3ec | bellard | * another socket, just use the accept() socket.
|
473 | f0cbd3ec | bellard | */
|
474 | f0cbd3ec | bellard | if (inso->so_state & SS_FACCEPTONCE) {
|
475 | f0cbd3ec | bellard | /* FACCEPTONCE already have a tcpcb */
|
476 | f0cbd3ec | bellard | so = inso; |
477 | f0cbd3ec | bellard | } else {
|
478 | f0cbd3ec | bellard | if ((so = socreate()) == NULL) { |
479 | f0cbd3ec | bellard | /* If it failed, get rid of the pending connection */
|
480 | 379ff53d | bellard | closesocket(accept(inso->s,(struct sockaddr *)&addr,&addrlen));
|
481 | f0cbd3ec | bellard | return;
|
482 | f0cbd3ec | bellard | } |
483 | f0cbd3ec | bellard | if (tcp_attach(so) < 0) { |
484 | f0cbd3ec | bellard | free(so); /* NOT sofree */
|
485 | f0cbd3ec | bellard | return;
|
486 | f0cbd3ec | bellard | } |
487 | f0cbd3ec | bellard | so->so_laddr = inso->so_laddr; |
488 | f0cbd3ec | bellard | so->so_lport = inso->so_lport; |
489 | f0cbd3ec | bellard | } |
490 | f0cbd3ec | bellard | |
491 | f0cbd3ec | bellard | (void) tcp_mss(sototcpcb(so), 0); |
492 | f0cbd3ec | bellard | |
493 | f0cbd3ec | bellard | if ((s = accept(inso->s,(struct sockaddr *)&addr,&addrlen)) < 0) { |
494 | f0cbd3ec | bellard | tcp_close(sototcpcb(so)); /* This will sofree() as well */
|
495 | f0cbd3ec | bellard | return;
|
496 | f0cbd3ec | bellard | } |
497 | f0cbd3ec | bellard | fd_nonblock(s); |
498 | f0cbd3ec | bellard | opt = 1;
|
499 | f0cbd3ec | bellard | setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&opt,sizeof(int)); |
500 | f0cbd3ec | bellard | opt = 1;
|
501 | f0cbd3ec | bellard | setsockopt(s,SOL_SOCKET,SO_OOBINLINE,(char *)&opt,sizeof(int)); |
502 | eaf7e70b | ths | opt = 1;
|
503 | eaf7e70b | ths | setsockopt(s,IPPROTO_TCP,TCP_NODELAY,(char *)&opt,sizeof(int)); |
504 | f0cbd3ec | bellard | |
505 | f0cbd3ec | bellard | so->so_fport = addr.sin_port; |
506 | f0cbd3ec | bellard | so->so_faddr = addr.sin_addr; |
507 | f0cbd3ec | bellard | /* Translate connections from localhost to the real hostname */
|
508 | f0cbd3ec | bellard | if (so->so_faddr.s_addr == 0 || so->so_faddr.s_addr == loopback_addr.s_addr) |
509 | 8dbca8dd | bellard | so->so_faddr = alias_addr; |
510 | f0cbd3ec | bellard | |
511 | f0cbd3ec | bellard | /* Close the accept() socket, set right state */
|
512 | f0cbd3ec | bellard | if (inso->so_state & SS_FACCEPTONCE) {
|
513 | 379ff53d | bellard | closesocket(so->s); /* If we only accept once, close the accept() socket */
|
514 | f0cbd3ec | bellard | so->so_state = SS_NOFDREF; /* Don't select it yet, even though we have an FD */
|
515 | f0cbd3ec | bellard | /* if it's not FACCEPTONCE, it's already NOFDREF */
|
516 | f0cbd3ec | bellard | } |
517 | f0cbd3ec | bellard | so->s = s; |
518 | f0cbd3ec | bellard | |
519 | f0cbd3ec | bellard | so->so_iptos = tcp_tos(so); |
520 | f0cbd3ec | bellard | tp = sototcpcb(so); |
521 | f0cbd3ec | bellard | |
522 | f0cbd3ec | bellard | tcp_template(tp); |
523 | f0cbd3ec | bellard | |
524 | f0cbd3ec | bellard | /* Compute window scaling to request. */
|
525 | f0cbd3ec | bellard | /* while (tp->request_r_scale < TCP_MAX_WINSHIFT &&
|
526 | f0cbd3ec | bellard | * (TCP_MAXWIN << tp->request_r_scale) < so->so_rcv.sb_hiwat)
|
527 | f0cbd3ec | bellard | * tp->request_r_scale++;
|
528 | f0cbd3ec | bellard | */
|
529 | f0cbd3ec | bellard | |
530 | f0cbd3ec | bellard | /* soisconnecting(so); */ /* NOFDREF used instead */ |
531 | f0cbd3ec | bellard | tcpstat.tcps_connattempt++; |
532 | f0cbd3ec | bellard | |
533 | f0cbd3ec | bellard | tp->t_state = TCPS_SYN_SENT; |
534 | f0cbd3ec | bellard | tp->t_timer[TCPT_KEEP] = TCPTV_KEEP_INIT; |
535 | f0cbd3ec | bellard | tp->iss = tcp_iss; |
536 | f0cbd3ec | bellard | tcp_iss += TCP_ISSINCR/2;
|
537 | f0cbd3ec | bellard | tcp_sendseqinit(tp); |
538 | f0cbd3ec | bellard | tcp_output(tp); |
539 | f0cbd3ec | bellard | } |
540 | f0cbd3ec | bellard | |
541 | f0cbd3ec | bellard | /*
|
542 | f0cbd3ec | bellard | * Attach a TCPCB to a socket.
|
543 | f0cbd3ec | bellard | */
|
544 | f0cbd3ec | bellard | int
|
545 | f0cbd3ec | bellard | tcp_attach(so) |
546 | f0cbd3ec | bellard | struct socket *so;
|
547 | f0cbd3ec | bellard | { |
548 | f0cbd3ec | bellard | if ((so->so_tcpcb = tcp_newtcpcb(so)) == NULL) |
549 | f0cbd3ec | bellard | return -1; |
550 | f0cbd3ec | bellard | |
551 | f0cbd3ec | bellard | insque(so, &tcb); |
552 | f0cbd3ec | bellard | |
553 | f0cbd3ec | bellard | return 0; |
554 | f0cbd3ec | bellard | } |
555 | f0cbd3ec | bellard | |
556 | f0cbd3ec | bellard | /*
|
557 | f0cbd3ec | bellard | * Set the socket's type of service field
|
558 | f0cbd3ec | bellard | */
|
559 | f0cbd3ec | bellard | struct tos_t tcptos[] = {
|
560 | f0cbd3ec | bellard | {0, 20, IPTOS_THROUGHPUT, 0}, /* ftp data */ |
561 | f0cbd3ec | bellard | {21, 21, IPTOS_LOWDELAY, EMU_FTP}, /* ftp control */ |
562 | f0cbd3ec | bellard | {0, 23, IPTOS_LOWDELAY, 0}, /* telnet */ |
563 | f0cbd3ec | bellard | {0, 80, IPTOS_THROUGHPUT, 0}, /* WWW */ |
564 | f0cbd3ec | bellard | {0, 513, IPTOS_LOWDELAY, EMU_RLOGIN|EMU_NOCONNECT}, /* rlogin */ |
565 | f0cbd3ec | bellard | {0, 514, IPTOS_LOWDELAY, EMU_RSH|EMU_NOCONNECT}, /* shell */ |
566 | f0cbd3ec | bellard | {0, 544, IPTOS_LOWDELAY, EMU_KSH}, /* kshell */ |
567 | f0cbd3ec | bellard | {0, 543, IPTOS_LOWDELAY, 0}, /* klogin */ |
568 | f0cbd3ec | bellard | {0, 6667, IPTOS_THROUGHPUT, EMU_IRC}, /* IRC */ |
569 | f0cbd3ec | bellard | {0, 6668, IPTOS_THROUGHPUT, EMU_IRC}, /* IRC undernet */ |
570 | f0cbd3ec | bellard | {0, 7070, IPTOS_LOWDELAY, EMU_REALAUDIO }, /* RealAudio control */ |
571 | f0cbd3ec | bellard | {0, 113, IPTOS_LOWDELAY, EMU_IDENT }, /* identd protocol */ |
572 | f0cbd3ec | bellard | {0, 0, 0, 0} |
573 | f0cbd3ec | bellard | }; |
574 | f0cbd3ec | bellard | |
575 | f0cbd3ec | bellard | struct emu_t *tcpemu = 0; |
576 | f0cbd3ec | bellard | |
577 | f0cbd3ec | bellard | /*
|
578 | f0cbd3ec | bellard | * Return TOS according to the above table
|
579 | f0cbd3ec | bellard | */
|
580 | f0cbd3ec | bellard | u_int8_t |
581 | f0cbd3ec | bellard | tcp_tos(so) |
582 | f0cbd3ec | bellard | struct socket *so;
|
583 | f0cbd3ec | bellard | { |
584 | f0cbd3ec | bellard | int i = 0; |
585 | f0cbd3ec | bellard | struct emu_t *emup;
|
586 | f0cbd3ec | bellard | |
587 | f0cbd3ec | bellard | while(tcptos[i].tos) {
|
588 | f0cbd3ec | bellard | if ((tcptos[i].fport && (ntohs(so->so_fport) == tcptos[i].fport)) ||
|
589 | f0cbd3ec | bellard | (tcptos[i].lport && (ntohs(so->so_lport) == tcptos[i].lport))) { |
590 | f0cbd3ec | bellard | so->so_emu = tcptos[i].emu; |
591 | f0cbd3ec | bellard | return tcptos[i].tos;
|
592 | f0cbd3ec | bellard | } |
593 | f0cbd3ec | bellard | i++; |
594 | f0cbd3ec | bellard | } |
595 | f0cbd3ec | bellard | |
596 | f0cbd3ec | bellard | /* Nope, lets see if there's a user-added one */
|
597 | f0cbd3ec | bellard | for (emup = tcpemu; emup; emup = emup->next) {
|
598 | f0cbd3ec | bellard | if ((emup->fport && (ntohs(so->so_fport) == emup->fport)) ||
|
599 | f0cbd3ec | bellard | (emup->lport && (ntohs(so->so_lport) == emup->lport))) { |
600 | f0cbd3ec | bellard | so->so_emu = emup->emu; |
601 | f0cbd3ec | bellard | return emup->tos;
|
602 | f0cbd3ec | bellard | } |
603 | f0cbd3ec | bellard | } |
604 | f0cbd3ec | bellard | |
605 | f0cbd3ec | bellard | return 0; |
606 | f0cbd3ec | bellard | } |
607 | f0cbd3ec | bellard | |
608 | f0cbd3ec | bellard | int do_echo = -1; |
609 | f0cbd3ec | bellard | |
610 | f0cbd3ec | bellard | /*
|
611 | f0cbd3ec | bellard | * Emulate programs that try and connect to us
|
612 | f0cbd3ec | bellard | * This includes ftp (the data connection is
|
613 | f0cbd3ec | bellard | * initiated by the server) and IRC (DCC CHAT and
|
614 | f0cbd3ec | bellard | * DCC SEND) for now
|
615 | f0cbd3ec | bellard | *
|
616 | f0cbd3ec | bellard | * NOTE: It's possible to crash SLiRP by sending it
|
617 | f0cbd3ec | bellard | * unstandard strings to emulate... if this is a problem,
|
618 | f0cbd3ec | bellard | * more checks are needed here
|
619 | f0cbd3ec | bellard | *
|
620 | f0cbd3ec | bellard | * XXX Assumes the whole command came in one packet
|
621 | f0cbd3ec | bellard | *
|
622 | f0cbd3ec | bellard | * XXX Some ftp clients will have their TOS set to
|
623 | f0cbd3ec | bellard | * LOWDELAY and so Nagel will kick in. Because of this,
|
624 | f0cbd3ec | bellard | * we'll get the first letter, followed by the rest, so
|
625 | f0cbd3ec | bellard | * we simply scan for ORT instead of PORT...
|
626 | f0cbd3ec | bellard | * DCC doesn't have this problem because there's other stuff
|
627 | f0cbd3ec | bellard | * in the packet before the DCC command.
|
628 | f0cbd3ec | bellard | *
|
629 | f0cbd3ec | bellard | * Return 1 if the mbuf m is still valid and should be
|
630 | f0cbd3ec | bellard | * sbappend()ed
|
631 | f0cbd3ec | bellard | *
|
632 | f0cbd3ec | bellard | * NOTE: if you return 0 you MUST m_free() the mbuf!
|
633 | f0cbd3ec | bellard | */
|
634 | f0cbd3ec | bellard | int
|
635 | f0cbd3ec | bellard | tcp_emu(so, m) |
636 | f0cbd3ec | bellard | struct socket *so;
|
637 | f0cbd3ec | bellard | struct mbuf *m;
|
638 | f0cbd3ec | bellard | { |
639 | f0cbd3ec | bellard | u_int n1, n2, n3, n4, n5, n6; |
640 | f0cbd3ec | bellard | char buff[256]; |
641 | f0cbd3ec | bellard | u_int32_t laddr; |
642 | f0cbd3ec | bellard | u_int lport; |
643 | f0cbd3ec | bellard | char *bptr;
|
644 | f0cbd3ec | bellard | |
645 | f0cbd3ec | bellard | DEBUG_CALL("tcp_emu");
|
646 | f0cbd3ec | bellard | DEBUG_ARG("so = %lx", (long)so); |
647 | f0cbd3ec | bellard | DEBUG_ARG("m = %lx", (long)m); |
648 | f0cbd3ec | bellard | |
649 | f0cbd3ec | bellard | switch(so->so_emu) {
|
650 | f0cbd3ec | bellard | int x, i;
|
651 | f0cbd3ec | bellard | |
652 | f0cbd3ec | bellard | case EMU_IDENT:
|
653 | f0cbd3ec | bellard | /*
|
654 | f0cbd3ec | bellard | * Identification protocol as per rfc-1413
|
655 | f0cbd3ec | bellard | */
|
656 | f0cbd3ec | bellard | |
657 | f0cbd3ec | bellard | { |
658 | f0cbd3ec | bellard | struct socket *tmpso;
|
659 | f0cbd3ec | bellard | struct sockaddr_in addr;
|
660 | f0cbd3ec | bellard | int addrlen = sizeof(struct sockaddr_in); |
661 | f0cbd3ec | bellard | struct sbuf *so_rcv = &so->so_rcv;
|
662 | f0cbd3ec | bellard | |
663 | f0cbd3ec | bellard | memcpy(so_rcv->sb_wptr, m->m_data, m->m_len); |
664 | f0cbd3ec | bellard | so_rcv->sb_wptr += m->m_len; |
665 | f0cbd3ec | bellard | so_rcv->sb_rptr += m->m_len; |
666 | f0cbd3ec | bellard | m->m_data[m->m_len] = 0; /* NULL terminate */ |
667 | f0cbd3ec | bellard | if (strchr(m->m_data, '\r') || strchr(m->m_data, '\n')) { |
668 | f0cbd3ec | bellard | if (sscanf(so_rcv->sb_data, "%d%*[ ,]%d", &n1, &n2) == 2) { |
669 | f0cbd3ec | bellard | HTONS(n1); |
670 | f0cbd3ec | bellard | HTONS(n2); |
671 | f0cbd3ec | bellard | /* n2 is the one on our host */
|
672 | f0cbd3ec | bellard | for (tmpso = tcb.so_next; tmpso != &tcb; tmpso = tmpso->so_next) {
|
673 | f0cbd3ec | bellard | if (tmpso->so_laddr.s_addr == so->so_laddr.s_addr &&
|
674 | f0cbd3ec | bellard | tmpso->so_lport == n2 && |
675 | f0cbd3ec | bellard | tmpso->so_faddr.s_addr == so->so_faddr.s_addr && |
676 | f0cbd3ec | bellard | tmpso->so_fport == n1) { |
677 | f0cbd3ec | bellard | if (getsockname(tmpso->s,
|
678 | f0cbd3ec | bellard | (struct sockaddr *)&addr, &addrlen) == 0) |
679 | f0cbd3ec | bellard | n2 = ntohs(addr.sin_port); |
680 | f0cbd3ec | bellard | break;
|
681 | f0cbd3ec | bellard | } |
682 | f0cbd3ec | bellard | } |
683 | f0cbd3ec | bellard | } |
684 | f0cbd3ec | bellard | so_rcv->sb_cc = sprintf(so_rcv->sb_data, "%d,%d\r\n", n1, n2);
|
685 | f0cbd3ec | bellard | so_rcv->sb_rptr = so_rcv->sb_data; |
686 | f0cbd3ec | bellard | so_rcv->sb_wptr = so_rcv->sb_data + so_rcv->sb_cc; |
687 | f0cbd3ec | bellard | } |
688 | f0cbd3ec | bellard | m_free(m); |
689 | f0cbd3ec | bellard | return 0; |
690 | f0cbd3ec | bellard | } |
691 | f0cbd3ec | bellard | |
692 | f0cbd3ec | bellard | #if 0
|
693 | f0cbd3ec | bellard | case EMU_RLOGIN:
|
694 | f0cbd3ec | bellard | /*
|
695 | f0cbd3ec | bellard | * Rlogin emulation
|
696 | f0cbd3ec | bellard | * First we accumulate all the initial option negotiation,
|
697 | f0cbd3ec | bellard | * then fork_exec() rlogin according to the options
|
698 | f0cbd3ec | bellard | */
|
699 | f0cbd3ec | bellard | {
|
700 | f0cbd3ec | bellard | int i, i2, n;
|
701 | f0cbd3ec | bellard | char *ptr;
|
702 | f0cbd3ec | bellard | char args[100];
|
703 | f0cbd3ec | bellard | char term[100];
|
704 | f0cbd3ec | bellard | struct sbuf *so_snd = &so->so_snd;
|
705 | f0cbd3ec | bellard | struct sbuf *so_rcv = &so->so_rcv;
|
706 | f0cbd3ec | bellard |
|
707 | f0cbd3ec | bellard | /* First check if they have a priveladged port, or too much data has arrived */
|
708 | f0cbd3ec | bellard | if (ntohs(so->so_lport) > 1023 || ntohs(so->so_lport) < 512 ||
|
709 | f0cbd3ec | bellard | (m->m_len + so_rcv->sb_wptr) > (so_rcv->sb_data + so_rcv->sb_datalen)) {
|
710 | f0cbd3ec | bellard | memcpy(so_snd->sb_wptr, "Permission denied\n", 18);
|
711 | f0cbd3ec | bellard | so_snd->sb_wptr += 18;
|
712 | f0cbd3ec | bellard | so_snd->sb_cc += 18;
|
713 | f0cbd3ec | bellard | tcp_sockclosed(sototcpcb(so));
|
714 | f0cbd3ec | bellard | m_free(m);
|
715 | f0cbd3ec | bellard | return 0;
|
716 | f0cbd3ec | bellard | }
|
717 | f0cbd3ec | bellard |
|
718 | f0cbd3ec | bellard | /* Append the current data */
|
719 | f0cbd3ec | bellard | memcpy(so_rcv->sb_wptr, m->m_data, m->m_len);
|
720 | f0cbd3ec | bellard | so_rcv->sb_wptr += m->m_len;
|
721 | f0cbd3ec | bellard | so_rcv->sb_rptr += m->m_len;
|
722 | f0cbd3ec | bellard | m_free(m);
|
723 | f0cbd3ec | bellard |
|
724 | f0cbd3ec | bellard | /*
|
725 | f0cbd3ec | bellard | * Check if we have all the initial options,
|
726 | f0cbd3ec | bellard | * and build argument list to rlogin while we're here
|
727 | f0cbd3ec | bellard | */
|
728 | f0cbd3ec | bellard | n = 0;
|
729 | f0cbd3ec | bellard | ptr = so_rcv->sb_data;
|
730 | f0cbd3ec | bellard | args[0] = 0;
|
731 | f0cbd3ec | bellard | term[0] = 0;
|
732 | f0cbd3ec | bellard | while (ptr < so_rcv->sb_wptr) {
|
733 | f0cbd3ec | bellard | if (*ptr++ == 0) {
|
734 | f0cbd3ec | bellard | n++;
|
735 | f0cbd3ec | bellard | if (n == 2) {
|
736 | f0cbd3ec | bellard | sprintf(args, "rlogin -l %s %s",
|
737 | f0cbd3ec | bellard | ptr, inet_ntoa(so->so_faddr));
|
738 | f0cbd3ec | bellard | } else if (n == 3) {
|
739 | f0cbd3ec | bellard | i2 = so_rcv->sb_wptr - ptr;
|
740 | f0cbd3ec | bellard | for (i = 0; i < i2; i++) {
|
741 | f0cbd3ec | bellard | if (ptr[i] == '/') {
|
742 | f0cbd3ec | bellard | ptr[i] = 0;
|
743 | f0cbd3ec | bellard | #ifdef HAVE_SETENV
|
744 | f0cbd3ec | bellard | sprintf(term, "%s", ptr);
|
745 | f0cbd3ec | bellard | #else
|
746 | f0cbd3ec | bellard | sprintf(term, "TERM=%s", ptr);
|
747 | f0cbd3ec | bellard | #endif
|
748 | f0cbd3ec | bellard | ptr[i] = '/';
|
749 | f0cbd3ec | bellard | break;
|
750 | f0cbd3ec | bellard | } |
751 | f0cbd3ec | bellard | } |
752 | f0cbd3ec | bellard | } |
753 | f0cbd3ec | bellard | } |
754 | f0cbd3ec | bellard | } |
755 | f0cbd3ec | bellard | |
756 | f0cbd3ec | bellard | if (n != 4) |
757 | f0cbd3ec | bellard | return 0; |
758 | f0cbd3ec | bellard | |
759 | f0cbd3ec | bellard | /* We have it, set our term variable and fork_exec() */
|
760 | f0cbd3ec | bellard | #ifdef HAVE_SETENV
|
761 | f0cbd3ec | bellard | setenv("TERM", term, 1); |
762 | f0cbd3ec | bellard | #else
|
763 | f0cbd3ec | bellard | putenv(term); |
764 | f0cbd3ec | bellard | #endif
|
765 | f0cbd3ec | bellard | fork_exec(so, args, 2);
|
766 | f0cbd3ec | bellard | term[0] = 0; |
767 | f0cbd3ec | bellard | so->so_emu = 0;
|
768 | f0cbd3ec | bellard | |
769 | f0cbd3ec | bellard | /* And finally, send the client a 0 character */
|
770 | f0cbd3ec | bellard | so_snd->sb_wptr[0] = 0; |
771 | f0cbd3ec | bellard | so_snd->sb_wptr++; |
772 | f0cbd3ec | bellard | so_snd->sb_cc++; |
773 | f0cbd3ec | bellard | |
774 | f0cbd3ec | bellard | return 0; |
775 | f0cbd3ec | bellard | } |
776 | f0cbd3ec | bellard | |
777 | f0cbd3ec | bellard | case EMU_RSH:
|
778 | f0cbd3ec | bellard | /*
|
779 | f0cbd3ec | bellard | * rsh emulation
|
780 | f0cbd3ec | bellard | * First we accumulate all the initial option negotiation,
|
781 | f0cbd3ec | bellard | * then rsh_exec() rsh according to the options
|
782 | f0cbd3ec | bellard | */
|
783 | f0cbd3ec | bellard | { |
784 | f0cbd3ec | bellard | int n;
|
785 | f0cbd3ec | bellard | char *ptr;
|
786 | f0cbd3ec | bellard | char *user;
|
787 | f0cbd3ec | bellard | char *args;
|
788 | f0cbd3ec | bellard | struct sbuf *so_snd = &so->so_snd;
|
789 | f0cbd3ec | bellard | struct sbuf *so_rcv = &so->so_rcv;
|
790 | f0cbd3ec | bellard | |
791 | f0cbd3ec | bellard | /* First check if they have a priveladged port, or too much data has arrived */
|
792 | f0cbd3ec | bellard | if (ntohs(so->so_lport) > 1023 || ntohs(so->so_lport) < 512 || |
793 | f0cbd3ec | bellard | (m->m_len + so_rcv->sb_wptr) > (so_rcv->sb_data + so_rcv->sb_datalen)) { |
794 | f0cbd3ec | bellard | memcpy(so_snd->sb_wptr, "Permission denied\n", 18); |
795 | f0cbd3ec | bellard | so_snd->sb_wptr += 18;
|
796 | f0cbd3ec | bellard | so_snd->sb_cc += 18;
|
797 | f0cbd3ec | bellard | tcp_sockclosed(sototcpcb(so)); |
798 | f0cbd3ec | bellard | m_free(m); |
799 | f0cbd3ec | bellard | return 0; |
800 | f0cbd3ec | bellard | } |
801 | f0cbd3ec | bellard | |
802 | f0cbd3ec | bellard | /* Append the current data */
|
803 | f0cbd3ec | bellard | memcpy(so_rcv->sb_wptr, m->m_data, m->m_len); |
804 | f0cbd3ec | bellard | so_rcv->sb_wptr += m->m_len; |
805 | f0cbd3ec | bellard | so_rcv->sb_rptr += m->m_len; |
806 | f0cbd3ec | bellard | m_free(m); |
807 | f0cbd3ec | bellard | |
808 | f0cbd3ec | bellard | /*
|
809 | f0cbd3ec | bellard | * Check if we have all the initial options,
|
810 | f0cbd3ec | bellard | * and build argument list to rlogin while we're here
|
811 | f0cbd3ec | bellard | */
|
812 | f0cbd3ec | bellard | n = 0;
|
813 | f0cbd3ec | bellard | ptr = so_rcv->sb_data; |
814 | f0cbd3ec | bellard | user="";
|
815 | f0cbd3ec | bellard | args="";
|
816 | f0cbd3ec | bellard | if (so->extra==NULL) { |
817 | f0cbd3ec | bellard | struct socket *ns;
|
818 | f0cbd3ec | bellard | struct tcpcb* tp;
|
819 | f0cbd3ec | bellard | int port=atoi(ptr);
|
820 | f0cbd3ec | bellard | if (port <= 0) return 0; |
821 | f0cbd3ec | bellard | if (port > 1023 || port < 512) { |
822 | f0cbd3ec | bellard | memcpy(so_snd->sb_wptr, "Permission denied\n", 18); |
823 | f0cbd3ec | bellard | so_snd->sb_wptr += 18;
|
824 | f0cbd3ec | bellard | so_snd->sb_cc += 18;
|
825 | f0cbd3ec | bellard | tcp_sockclosed(sototcpcb(so)); |
826 | f0cbd3ec | bellard | return 0; |
827 | f0cbd3ec | bellard | } |
828 | f0cbd3ec | bellard | if ((ns=socreate()) == NULL) |
829 | f0cbd3ec | bellard | return 0; |
830 | f0cbd3ec | bellard | if (tcp_attach(ns)<0) { |
831 | f0cbd3ec | bellard | free(ns); |
832 | f0cbd3ec | bellard | return 0; |
833 | f0cbd3ec | bellard | } |
834 | f0cbd3ec | bellard | |
835 | f0cbd3ec | bellard | ns->so_laddr=so->so_laddr; |
836 | f0cbd3ec | bellard | ns->so_lport=htons(port); |
837 | f0cbd3ec | bellard | |
838 | f0cbd3ec | bellard | (void) tcp_mss(sototcpcb(ns), 0); |
839 | f0cbd3ec | bellard | |
840 | f0cbd3ec | bellard | ns->so_faddr=so->so_faddr; |
841 | f0cbd3ec | bellard | ns->so_fport=htons(IPPORT_RESERVED-1); /* Use a fake port. */ |
842 | f0cbd3ec | bellard | |
843 | f0cbd3ec | bellard | if (ns->so_faddr.s_addr == 0 || |
844 | f0cbd3ec | bellard | ns->so_faddr.s_addr == loopback_addr.s_addr) |
845 | 8dbca8dd | bellard | ns->so_faddr = alias_addr; |
846 | f0cbd3ec | bellard | |
847 | f0cbd3ec | bellard | ns->so_iptos = tcp_tos(ns); |
848 | f0cbd3ec | bellard | tp = sototcpcb(ns); |
849 | f0cbd3ec | bellard | |
850 | f0cbd3ec | bellard | tcp_template(tp); |
851 | f0cbd3ec | bellard | |
852 | f0cbd3ec | bellard | /* Compute window scaling to request. */
|
853 | f0cbd3ec | bellard | /* while (tp->request_r_scale < TCP_MAX_WINSHIFT &&
|
854 | f0cbd3ec | bellard | * (TCP_MAXWIN << tp->request_r_scale) < so->so_rcv.sb_hiwat)
|
855 | f0cbd3ec | bellard | * tp->request_r_scale++;
|
856 | f0cbd3ec | bellard | */
|
857 | f0cbd3ec | bellard | |
858 | f0cbd3ec | bellard | /*soisfconnecting(ns);*/
|
859 | f0cbd3ec | bellard | |
860 | f0cbd3ec | bellard | tcpstat.tcps_connattempt++; |
861 | f0cbd3ec | bellard | |
862 | f0cbd3ec | bellard | tp->t_state = TCPS_SYN_SENT; |
863 | f0cbd3ec | bellard | tp->t_timer[TCPT_KEEP] = TCPTV_KEEP_INIT; |
864 | f0cbd3ec | bellard | tp->iss = tcp_iss; |
865 | f0cbd3ec | bellard | tcp_iss += TCP_ISSINCR/2;
|
866 | f0cbd3ec | bellard | tcp_sendseqinit(tp); |
867 | f0cbd3ec | bellard | tcp_output(tp); |
868 | f0cbd3ec | bellard | so->extra=ns; |
869 | f0cbd3ec | bellard | } |
870 | f0cbd3ec | bellard | while (ptr < so_rcv->sb_wptr) {
|
871 | f0cbd3ec | bellard | if (*ptr++ == 0) { |
872 | f0cbd3ec | bellard | n++; |
873 | f0cbd3ec | bellard | if (n == 2) { |
874 | f0cbd3ec | bellard | user=ptr; |
875 | f0cbd3ec | bellard | } else if (n == 3) { |
876 | f0cbd3ec | bellard | args=ptr; |
877 | f0cbd3ec | bellard | } |
878 | f0cbd3ec | bellard | } |
879 | f0cbd3ec | bellard | } |
880 | f0cbd3ec | bellard | |
881 | f0cbd3ec | bellard | if (n != 4) |
882 | f0cbd3ec | bellard | return 0; |
883 | f0cbd3ec | bellard | |
884 | f0cbd3ec | bellard | rsh_exec(so,so->extra, user, inet_ntoa(so->so_faddr), args); |
885 | f0cbd3ec | bellard | so->so_emu = 0;
|
886 | f0cbd3ec | bellard | so->extra=NULL;
|
887 | f0cbd3ec | bellard | |
888 | f0cbd3ec | bellard | /* And finally, send the client a 0 character */
|
889 | f0cbd3ec | bellard | so_snd->sb_wptr[0] = 0; |
890 | f0cbd3ec | bellard | so_snd->sb_wptr++; |
891 | f0cbd3ec | bellard | so_snd->sb_cc++; |
892 | f0cbd3ec | bellard | |
893 | f0cbd3ec | bellard | return 0; |
894 | f0cbd3ec | bellard | } |
895 | f0cbd3ec | bellard | |
896 | f0cbd3ec | bellard | case EMU_CTL:
|
897 | f0cbd3ec | bellard | { |
898 | f0cbd3ec | bellard | int num;
|
899 | f0cbd3ec | bellard | struct sbuf *so_snd = &so->so_snd;
|
900 | f0cbd3ec | bellard | struct sbuf *so_rcv = &so->so_rcv;
|
901 | f0cbd3ec | bellard | |
902 | f0cbd3ec | bellard | /*
|
903 | f0cbd3ec | bellard | * If there is binary data here, we save it in so->so_m
|
904 | f0cbd3ec | bellard | */
|
905 | f0cbd3ec | bellard | if (!so->so_m) {
|
906 | f0cbd3ec | bellard | int rxlen;
|
907 | f0cbd3ec | bellard | char *rxdata;
|
908 | f0cbd3ec | bellard | rxdata=mtod(m, char *);
|
909 | f0cbd3ec | bellard | for (rxlen=m->m_len; rxlen; rxlen--) {
|
910 | f0cbd3ec | bellard | if (*rxdata++ & 0x80) { |
911 | f0cbd3ec | bellard | so->so_m = m; |
912 | f0cbd3ec | bellard | return 0; |
913 | f0cbd3ec | bellard | } |
914 | f0cbd3ec | bellard | } |
915 | f0cbd3ec | bellard | } /* if(so->so_m==NULL) */
|
916 | f0cbd3ec | bellard | |
917 | f0cbd3ec | bellard | /*
|
918 | f0cbd3ec | bellard | * Append the line
|
919 | f0cbd3ec | bellard | */
|
920 | f0cbd3ec | bellard | sbappendsb(so_rcv, m); |
921 | f0cbd3ec | bellard | |
922 | f0cbd3ec | bellard | /* To avoid going over the edge of the buffer, we reset it */
|
923 | f0cbd3ec | bellard | if (so_snd->sb_cc == 0) |
924 | f0cbd3ec | bellard | so_snd->sb_wptr = so_snd->sb_rptr = so_snd->sb_data; |
925 | f0cbd3ec | bellard | |
926 | f0cbd3ec | bellard | /*
|
927 | f0cbd3ec | bellard | * A bit of a hack:
|
928 | f0cbd3ec | bellard | * If the first packet we get here is 1 byte long, then it
|
929 | f0cbd3ec | bellard | * was done in telnet character mode, therefore we must echo
|
930 | f0cbd3ec | bellard | * the characters as they come. Otherwise, we echo nothing,
|
931 | f0cbd3ec | bellard | * because in linemode, the line is already echoed
|
932 | f0cbd3ec | bellard | * XXX two or more control connections won't work
|
933 | f0cbd3ec | bellard | */
|
934 | f0cbd3ec | bellard | if (do_echo == -1) { |
935 | f0cbd3ec | bellard | if (m->m_len == 1) do_echo = 1; |
936 | f0cbd3ec | bellard | else do_echo = 0; |
937 | f0cbd3ec | bellard | } |
938 | f0cbd3ec | bellard | if (do_echo) {
|
939 | f0cbd3ec | bellard | sbappendsb(so_snd, m); |
940 | f0cbd3ec | bellard | m_free(m); |
941 | f0cbd3ec | bellard | tcp_output(sototcpcb(so)); /* XXX */
|
942 | f0cbd3ec | bellard | } else
|
943 | f0cbd3ec | bellard | m_free(m); |
944 | f0cbd3ec | bellard | |
945 | f0cbd3ec | bellard | num = 0;
|
946 | f0cbd3ec | bellard | while (num < so->so_rcv.sb_cc) {
|
947 | f0cbd3ec | bellard | if (*(so->so_rcv.sb_rptr + num) == '\n' || |
948 | f0cbd3ec | bellard | *(so->so_rcv.sb_rptr + num) == '\r') {
|
949 | f0cbd3ec | bellard | int n;
|
950 | f0cbd3ec | bellard | |
951 | f0cbd3ec | bellard | *(so_rcv->sb_rptr + num) = 0;
|
952 | f0cbd3ec | bellard | if (ctl_password && !ctl_password_ok) {
|
953 | f0cbd3ec | bellard | /* Need a password */
|
954 | f0cbd3ec | bellard | if (sscanf(so_rcv->sb_rptr, "pass %256s", buff) == 1) { |
955 | f0cbd3ec | bellard | if (strcmp(buff, ctl_password) == 0) { |
956 | f0cbd3ec | bellard | ctl_password_ok = 1;
|
957 | f0cbd3ec | bellard | n = sprintf(so_snd->sb_wptr, |
958 | f0cbd3ec | bellard | "Password OK.\r\n");
|
959 | f0cbd3ec | bellard | goto do_prompt;
|
960 | f0cbd3ec | bellard | } |
961 | f0cbd3ec | bellard | } |
962 | f0cbd3ec | bellard | n = sprintf(so_snd->sb_wptr, |
963 | f0cbd3ec | bellard | "Error: Password required, log on with \"pass PASSWORD\"\r\n");
|
964 | f0cbd3ec | bellard | goto do_prompt;
|
965 | f0cbd3ec | bellard | } |
966 | f0cbd3ec | bellard | cfg_quitting = 0;
|
967 | f0cbd3ec | bellard | n = do_config(so_rcv->sb_rptr, so, PRN_SPRINTF); |
968 | f0cbd3ec | bellard | if (!cfg_quitting) {
|
969 | f0cbd3ec | bellard | /* Register the printed data */
|
970 | f0cbd3ec | bellard | do_prompt:
|
971 | f0cbd3ec | bellard | so_snd->sb_cc += n; |
972 | f0cbd3ec | bellard | so_snd->sb_wptr += n; |
973 | f0cbd3ec | bellard | /* Add prompt */
|
974 | f0cbd3ec | bellard | n = sprintf(so_snd->sb_wptr, "Slirp> ");
|
975 | f0cbd3ec | bellard | so_snd->sb_cc += n; |
976 | f0cbd3ec | bellard | so_snd->sb_wptr += n; |
977 | f0cbd3ec | bellard | } |
978 | f0cbd3ec | bellard | /* Drop so_rcv data */
|
979 | f0cbd3ec | bellard | so_rcv->sb_cc = 0;
|
980 | f0cbd3ec | bellard | so_rcv->sb_wptr = so_rcv->sb_rptr = so_rcv->sb_data; |
981 | f0cbd3ec | bellard | tcp_output(sototcpcb(so)); /* Send the reply */
|
982 | f0cbd3ec | bellard | } |
983 | f0cbd3ec | bellard | num++; |
984 | f0cbd3ec | bellard | } |
985 | f0cbd3ec | bellard | return 0; |
986 | f0cbd3ec | bellard | } |
987 | f0cbd3ec | bellard | #endif
|
988 | f0cbd3ec | bellard | case EMU_FTP: /* ftp */ |
989 | f0cbd3ec | bellard | *(m->m_data+m->m_len) = 0; /* NULL terminate for strstr */ |
990 | f0cbd3ec | bellard | if ((bptr = (char *)strstr(m->m_data, "ORT")) != NULL) { |
991 | f0cbd3ec | bellard | /*
|
992 | f0cbd3ec | bellard | * Need to emulate the PORT command
|
993 | f0cbd3ec | bellard | */
|
994 | f0cbd3ec | bellard | x = sscanf(bptr, "ORT %d,%d,%d,%d,%d,%d\r\n%256[^\177]",
|
995 | f0cbd3ec | bellard | &n1, &n2, &n3, &n4, &n5, &n6, buff); |
996 | f0cbd3ec | bellard | if (x < 6) |
997 | f0cbd3ec | bellard | return 1; |
998 | f0cbd3ec | bellard | |
999 | f0cbd3ec | bellard | laddr = htonl((n1 << 24) | (n2 << 16) | (n3 << 8) | (n4)); |
1000 | f0cbd3ec | bellard | lport = htons((n5 << 8) | (n6));
|
1001 | f0cbd3ec | bellard | |
1002 | f0cbd3ec | bellard | if ((so = solisten(0, laddr, lport, SS_FACCEPTONCE)) == NULL) |
1003 | f0cbd3ec | bellard | return 1; |
1004 | f0cbd3ec | bellard | |
1005 | f0cbd3ec | bellard | n6 = ntohs(so->so_fport); |
1006 | f0cbd3ec | bellard | |
1007 | f0cbd3ec | bellard | n5 = (n6 >> 8) & 0xff; |
1008 | f0cbd3ec | bellard | n6 &= 0xff;
|
1009 | f0cbd3ec | bellard | |
1010 | f0cbd3ec | bellard | laddr = ntohl(so->so_faddr.s_addr); |
1011 | f0cbd3ec | bellard | |
1012 | f0cbd3ec | bellard | n1 = ((laddr >> 24) & 0xff); |
1013 | f0cbd3ec | bellard | n2 = ((laddr >> 16) & 0xff); |
1014 | f0cbd3ec | bellard | n3 = ((laddr >> 8) & 0xff); |
1015 | f0cbd3ec | bellard | n4 = (laddr & 0xff);
|
1016 | f0cbd3ec | bellard | |
1017 | f0cbd3ec | bellard | m->m_len = bptr - m->m_data; /* Adjust length */
|
1018 | f0cbd3ec | bellard | m->m_len += sprintf(bptr,"ORT %d,%d,%d,%d,%d,%d\r\n%s",
|
1019 | f0cbd3ec | bellard | n1, n2, n3, n4, n5, n6, x==7?buff:""); |
1020 | f0cbd3ec | bellard | return 1; |
1021 | f0cbd3ec | bellard | } else if ((bptr = (char *)strstr(m->m_data, "27 Entering")) != NULL) { |
1022 | f0cbd3ec | bellard | /*
|
1023 | f0cbd3ec | bellard | * Need to emulate the PASV response
|
1024 | f0cbd3ec | bellard | */
|
1025 | f0cbd3ec | bellard | x = sscanf(bptr, "27 Entering Passive Mode (%d,%d,%d,%d,%d,%d)\r\n%256[^\177]",
|
1026 | f0cbd3ec | bellard | &n1, &n2, &n3, &n4, &n5, &n6, buff); |
1027 | f0cbd3ec | bellard | if (x < 6) |
1028 | f0cbd3ec | bellard | return 1; |
1029 | f0cbd3ec | bellard | |
1030 | f0cbd3ec | bellard | laddr = htonl((n1 << 24) | (n2 << 16) | (n3 << 8) | (n4)); |
1031 | f0cbd3ec | bellard | lport = htons((n5 << 8) | (n6));
|
1032 | f0cbd3ec | bellard | |
1033 | f0cbd3ec | bellard | if ((so = solisten(0, laddr, lport, SS_FACCEPTONCE)) == NULL) |
1034 | f0cbd3ec | bellard | return 1; |
1035 | f0cbd3ec | bellard | |
1036 | f0cbd3ec | bellard | n6 = ntohs(so->so_fport); |
1037 | f0cbd3ec | bellard | |
1038 | f0cbd3ec | bellard | n5 = (n6 >> 8) & 0xff; |
1039 | f0cbd3ec | bellard | n6 &= 0xff;
|
1040 | f0cbd3ec | bellard | |
1041 | f0cbd3ec | bellard | laddr = ntohl(so->so_faddr.s_addr); |
1042 | f0cbd3ec | bellard | |
1043 | f0cbd3ec | bellard | n1 = ((laddr >> 24) & 0xff); |
1044 | f0cbd3ec | bellard | n2 = ((laddr >> 16) & 0xff); |
1045 | f0cbd3ec | bellard | n3 = ((laddr >> 8) & 0xff); |
1046 | f0cbd3ec | bellard | n4 = (laddr & 0xff);
|
1047 | f0cbd3ec | bellard | |
1048 | f0cbd3ec | bellard | m->m_len = bptr - m->m_data; /* Adjust length */
|
1049 | f0cbd3ec | bellard | m->m_len += sprintf(bptr,"27 Entering Passive Mode (%d,%d,%d,%d,%d,%d)\r\n%s",
|
1050 | f0cbd3ec | bellard | n1, n2, n3, n4, n5, n6, x==7?buff:""); |
1051 | f0cbd3ec | bellard | |
1052 | f0cbd3ec | bellard | return 1; |
1053 | f0cbd3ec | bellard | } |
1054 | f0cbd3ec | bellard | |
1055 | f0cbd3ec | bellard | return 1; |
1056 | f0cbd3ec | bellard | |
1057 | f0cbd3ec | bellard | case EMU_KSH:
|
1058 | f0cbd3ec | bellard | /*
|
1059 | f0cbd3ec | bellard | * The kshell (Kerberos rsh) and shell services both pass
|
1060 | f0cbd3ec | bellard | * a local port port number to carry signals to the server
|
1061 | f0cbd3ec | bellard | * and stderr to the client. It is passed at the beginning
|
1062 | f0cbd3ec | bellard | * of the connection as a NUL-terminated decimal ASCII string.
|
1063 | f0cbd3ec | bellard | */
|
1064 | f0cbd3ec | bellard | so->so_emu = 0;
|
1065 | f0cbd3ec | bellard | for (lport = 0, i = 0; i < m->m_len-1; ++i) { |
1066 | f0cbd3ec | bellard | if (m->m_data[i] < '0' || m->m_data[i] > '9') |
1067 | f0cbd3ec | bellard | return 1; /* invalid number */ |
1068 | f0cbd3ec | bellard | lport *= 10;
|
1069 | f0cbd3ec | bellard | lport += m->m_data[i] - '0';
|
1070 | f0cbd3ec | bellard | } |
1071 | f0cbd3ec | bellard | if (m->m_data[m->m_len-1] == '\0' && lport != 0 && |
1072 | f0cbd3ec | bellard | (so = solisten(0, so->so_laddr.s_addr, htons(lport), SS_FACCEPTONCE)) != NULL) |
1073 | f0cbd3ec | bellard | m->m_len = sprintf(m->m_data, "%d", ntohs(so->so_fport))+1; |
1074 | f0cbd3ec | bellard | return 1; |
1075 | f0cbd3ec | bellard | |
1076 | f0cbd3ec | bellard | case EMU_IRC:
|
1077 | f0cbd3ec | bellard | /*
|
1078 | f0cbd3ec | bellard | * Need to emulate DCC CHAT, DCC SEND and DCC MOVE
|
1079 | f0cbd3ec | bellard | */
|
1080 | f0cbd3ec | bellard | *(m->m_data+m->m_len) = 0; /* NULL terminate the string for strstr */ |
1081 | f0cbd3ec | bellard | if ((bptr = (char *)strstr(m->m_data, "DCC")) == NULL) |
1082 | f0cbd3ec | bellard | return 1; |
1083 | f0cbd3ec | bellard | |
1084 | f0cbd3ec | bellard | /* The %256s is for the broken mIRC */
|
1085 | f0cbd3ec | bellard | if (sscanf(bptr, "DCC CHAT %256s %u %u", buff, &laddr, &lport) == 3) { |
1086 | f0cbd3ec | bellard | if ((so = solisten(0, htonl(laddr), htons(lport), SS_FACCEPTONCE)) == NULL) |
1087 | f0cbd3ec | bellard | return 1; |
1088 | f0cbd3ec | bellard | |
1089 | f0cbd3ec | bellard | m->m_len = bptr - m->m_data; /* Adjust length */
|
1090 | f0cbd3ec | bellard | m->m_len += sprintf(bptr, "DCC CHAT chat %lu %u%c\n",
|
1091 | f0cbd3ec | bellard | (unsigned long)ntohl(so->so_faddr.s_addr), |
1092 | f0cbd3ec | bellard | ntohs(so->so_fport), 1);
|
1093 | f0cbd3ec | bellard | } else if (sscanf(bptr, "DCC SEND %256s %u %u %u", buff, &laddr, &lport, &n1) == 4) { |
1094 | f0cbd3ec | bellard | if ((so = solisten(0, htonl(laddr), htons(lport), SS_FACCEPTONCE)) == NULL) |
1095 | f0cbd3ec | bellard | return 1; |
1096 | f0cbd3ec | bellard | |
1097 | f0cbd3ec | bellard | m->m_len = bptr - m->m_data; /* Adjust length */
|
1098 | f0cbd3ec | bellard | m->m_len += sprintf(bptr, "DCC SEND %s %lu %u %u%c\n",
|
1099 | f0cbd3ec | bellard | buff, (unsigned long)ntohl(so->so_faddr.s_addr), |
1100 | f0cbd3ec | bellard | ntohs(so->so_fport), n1, 1);
|
1101 | f0cbd3ec | bellard | } else if (sscanf(bptr, "DCC MOVE %256s %u %u %u", buff, &laddr, &lport, &n1) == 4) { |
1102 | f0cbd3ec | bellard | if ((so = solisten(0, htonl(laddr), htons(lport), SS_FACCEPTONCE)) == NULL) |
1103 | f0cbd3ec | bellard | return 1; |
1104 | f0cbd3ec | bellard | |
1105 | f0cbd3ec | bellard | m->m_len = bptr - m->m_data; /* Adjust length */
|
1106 | f0cbd3ec | bellard | m->m_len += sprintf(bptr, "DCC MOVE %s %lu %u %u%c\n",
|
1107 | f0cbd3ec | bellard | buff, (unsigned long)ntohl(so->so_faddr.s_addr), |
1108 | f0cbd3ec | bellard | ntohs(so->so_fport), n1, 1);
|
1109 | f0cbd3ec | bellard | } |
1110 | f0cbd3ec | bellard | return 1; |
1111 | f0cbd3ec | bellard | |
1112 | f0cbd3ec | bellard | case EMU_REALAUDIO:
|
1113 | f0cbd3ec | bellard | /*
|
1114 | f0cbd3ec | bellard | * RealAudio emulation - JP. We must try to parse the incoming
|
1115 | f0cbd3ec | bellard | * data and try to find the two characters that contain the
|
1116 | f0cbd3ec | bellard | * port number. Then we redirect an udp port and replace the
|
1117 | f0cbd3ec | bellard | * number with the real port we got.
|
1118 | f0cbd3ec | bellard | *
|
1119 | f0cbd3ec | bellard | * The 1.0 beta versions of the player are not supported
|
1120 | f0cbd3ec | bellard | * any more.
|
1121 | f0cbd3ec | bellard | *
|
1122 | f0cbd3ec | bellard | * A typical packet for player version 1.0 (release version):
|
1123 | f0cbd3ec | bellard | *
|
1124 | f0cbd3ec | bellard | * 0000:50 4E 41 00 05
|
1125 | f0cbd3ec | bellard | * 0000:00 01 00 02 1B D7 00 00 67 E6 6C DC 63 00 12 50 .....?..g?l?c..P
|
1126 | f0cbd3ec | bellard | * 0010:4E 43 4C 49 45 4E 54 20 31 30 31 20 41 4C 50 48 NCLIENT 101 ALPH
|
1127 | f0cbd3ec | bellard | * 0020:41 6C 00 00 52 00 17 72 61 66 69 6C 65 73 2F 76 Al..R..rafiles/v
|
1128 | f0cbd3ec | bellard | * 0030:6F 61 2F 65 6E 67 6C 69 73 68 5F 2E 72 61 79 42 oa/english_.rayB
|
1129 | f0cbd3ec | bellard | *
|
1130 | f0cbd3ec | bellard | * Now the port number 0x1BD7 is found at offset 0x04 of the
|
1131 | f0cbd3ec | bellard | * Now the port number 0x1BD7 is found at offset 0x04 of the
|
1132 | f0cbd3ec | bellard | * second packet. This time we received five bytes first and
|
1133 | f0cbd3ec | bellard | * then the rest. You never know how many bytes you get.
|
1134 | f0cbd3ec | bellard | *
|
1135 | f0cbd3ec | bellard | * A typical packet for player version 2.0 (beta):
|
1136 | f0cbd3ec | bellard | *
|
1137 | f0cbd3ec | bellard | * 0000:50 4E 41 00 06 00 02 00 00 00 01 00 02 1B C1 00 PNA...........?.
|
1138 | f0cbd3ec | bellard | * 0010:00 67 75 78 F5 63 00 0A 57 69 6E 32 2E 30 2E 30 .gux?c..Win2.0.0
|
1139 | f0cbd3ec | bellard | * 0020:2E 35 6C 00 00 52 00 1C 72 61 66 69 6C 65 73 2F .5l..R..rafiles/
|
1140 | f0cbd3ec | bellard | * 0030:77 65 62 73 69 74 65 2F 32 30 72 65 6C 65 61 73 website/20releas
|
1141 | f0cbd3ec | bellard | * 0040:65 2E 72 61 79 53 00 00 06 36 42 e.rayS...6B
|
1142 | f0cbd3ec | bellard | *
|
1143 | f0cbd3ec | bellard | * Port number 0x1BC1 is found at offset 0x0d.
|
1144 | f0cbd3ec | bellard | *
|
1145 | f0cbd3ec | bellard | * This is just a horrible switch statement. Variable ra tells
|
1146 | f0cbd3ec | bellard | * us where we're going.
|
1147 | f0cbd3ec | bellard | */
|
1148 | f0cbd3ec | bellard | |
1149 | f0cbd3ec | bellard | bptr = m->m_data; |
1150 | f0cbd3ec | bellard | while (bptr < m->m_data + m->m_len) {
|
1151 | f0cbd3ec | bellard | u_short p; |
1152 | f0cbd3ec | bellard | static int ra = 0; |
1153 | f0cbd3ec | bellard | char ra_tbl[4]; |
1154 | f0cbd3ec | bellard | |
1155 | f0cbd3ec | bellard | ra_tbl[0] = 0x50; |
1156 | f0cbd3ec | bellard | ra_tbl[1] = 0x4e; |
1157 | f0cbd3ec | bellard | ra_tbl[2] = 0x41; |
1158 | f0cbd3ec | bellard | ra_tbl[3] = 0; |
1159 | f0cbd3ec | bellard | |
1160 | f0cbd3ec | bellard | switch (ra) {
|
1161 | f0cbd3ec | bellard | case 0: |
1162 | f0cbd3ec | bellard | case 2: |
1163 | f0cbd3ec | bellard | case 3: |
1164 | f0cbd3ec | bellard | if (*bptr++ != ra_tbl[ra]) {
|
1165 | f0cbd3ec | bellard | ra = 0;
|
1166 | f0cbd3ec | bellard | continue;
|
1167 | f0cbd3ec | bellard | } |
1168 | f0cbd3ec | bellard | break;
|
1169 | f0cbd3ec | bellard | |
1170 | f0cbd3ec | bellard | case 1: |
1171 | f0cbd3ec | bellard | /*
|
1172 | f0cbd3ec | bellard | * We may get 0x50 several times, ignore them
|
1173 | f0cbd3ec | bellard | */
|
1174 | f0cbd3ec | bellard | if (*bptr == 0x50) { |
1175 | f0cbd3ec | bellard | ra = 1;
|
1176 | f0cbd3ec | bellard | bptr++; |
1177 | f0cbd3ec | bellard | continue;
|
1178 | f0cbd3ec | bellard | } else if (*bptr++ != ra_tbl[ra]) { |
1179 | f0cbd3ec | bellard | ra = 0;
|
1180 | f0cbd3ec | bellard | continue;
|
1181 | f0cbd3ec | bellard | } |
1182 | f0cbd3ec | bellard | break;
|
1183 | f0cbd3ec | bellard | |
1184 | f0cbd3ec | bellard | case 4: |
1185 | f0cbd3ec | bellard | /*
|
1186 | f0cbd3ec | bellard | * skip version number
|
1187 | f0cbd3ec | bellard | */
|
1188 | f0cbd3ec | bellard | bptr++; |
1189 | f0cbd3ec | bellard | break;
|
1190 | f0cbd3ec | bellard | |
1191 | f0cbd3ec | bellard | case 5: |
1192 | f0cbd3ec | bellard | /*
|
1193 | f0cbd3ec | bellard | * The difference between versions 1.0 and
|
1194 | f0cbd3ec | bellard | * 2.0 is here. For future versions of
|
1195 | f0cbd3ec | bellard | * the player this may need to be modified.
|
1196 | f0cbd3ec | bellard | */
|
1197 | f0cbd3ec | bellard | if (*(bptr + 1) == 0x02) |
1198 | f0cbd3ec | bellard | bptr += 8;
|
1199 | f0cbd3ec | bellard | else
|
1200 | f0cbd3ec | bellard | bptr += 4;
|
1201 | f0cbd3ec | bellard | break;
|
1202 | f0cbd3ec | bellard | |
1203 | f0cbd3ec | bellard | case 6: |
1204 | f0cbd3ec | bellard | /* This is the field containing the port
|
1205 | f0cbd3ec | bellard | * number that RA-player is listening to.
|
1206 | f0cbd3ec | bellard | */
|
1207 | f0cbd3ec | bellard | lport = (((u_char*)bptr)[0] << 8) |
1208 | f0cbd3ec | bellard | + ((u_char *)bptr)[1];
|
1209 | f0cbd3ec | bellard | if (lport < 6970) |
1210 | f0cbd3ec | bellard | lport += 256; /* don't know why */ |
1211 | f0cbd3ec | bellard | if (lport < 6970 || lport > 7170) |
1212 | f0cbd3ec | bellard | return 1; /* failed */ |
1213 | f0cbd3ec | bellard | |
1214 | f0cbd3ec | bellard | /* try to get udp port between 6970 - 7170 */
|
1215 | f0cbd3ec | bellard | for (p = 6970; p < 7071; p++) { |
1216 | f0cbd3ec | bellard | if (udp_listen( htons(p),
|
1217 | f0cbd3ec | bellard | so->so_laddr.s_addr, |
1218 | f0cbd3ec | bellard | htons(lport), |
1219 | f0cbd3ec | bellard | SS_FACCEPTONCE)) { |
1220 | f0cbd3ec | bellard | break;
|
1221 | f0cbd3ec | bellard | } |
1222 | f0cbd3ec | bellard | } |
1223 | f0cbd3ec | bellard | if (p == 7071) |
1224 | f0cbd3ec | bellard | p = 0;
|
1225 | f0cbd3ec | bellard | *(u_char *)bptr++ = (p >> 8) & 0xff; |
1226 | f0cbd3ec | bellard | *(u_char *)bptr++ = p & 0xff;
|
1227 | f0cbd3ec | bellard | ra = 0;
|
1228 | f0cbd3ec | bellard | return 1; /* port redirected, we're done */ |
1229 | f0cbd3ec | bellard | break;
|
1230 | f0cbd3ec | bellard | |
1231 | f0cbd3ec | bellard | default:
|
1232 | f0cbd3ec | bellard | ra = 0;
|
1233 | f0cbd3ec | bellard | } |
1234 | f0cbd3ec | bellard | ra++; |
1235 | f0cbd3ec | bellard | } |
1236 | f0cbd3ec | bellard | return 1; |
1237 | f0cbd3ec | bellard | |
1238 | f0cbd3ec | bellard | default:
|
1239 | f0cbd3ec | bellard | /* Ooops, not emulated, won't call tcp_emu again */
|
1240 | f0cbd3ec | bellard | so->so_emu = 0;
|
1241 | f0cbd3ec | bellard | return 1; |
1242 | f0cbd3ec | bellard | } |
1243 | f0cbd3ec | bellard | } |
1244 | f0cbd3ec | bellard | |
1245 | f0cbd3ec | bellard | /*
|
1246 | f0cbd3ec | bellard | * Do misc. config of SLiRP while its running.
|
1247 | f0cbd3ec | bellard | * Return 0 if this connections is to be closed, 1 otherwise,
|
1248 | f0cbd3ec | bellard | * return 2 if this is a command-line connection
|
1249 | f0cbd3ec | bellard | */
|
1250 | f0cbd3ec | bellard | int
|
1251 | f0cbd3ec | bellard | tcp_ctl(so) |
1252 | f0cbd3ec | bellard | struct socket *so;
|
1253 | f0cbd3ec | bellard | { |
1254 | f0cbd3ec | bellard | struct sbuf *sb = &so->so_snd;
|
1255 | f0cbd3ec | bellard | int command;
|
1256 | f0cbd3ec | bellard | struct ex_list *ex_ptr;
|
1257 | f0cbd3ec | bellard | int do_pty;
|
1258 | 99679ece | bellard | // struct socket *tmpso;
|
1259 | f0cbd3ec | bellard | |
1260 | f0cbd3ec | bellard | DEBUG_CALL("tcp_ctl");
|
1261 | f0cbd3ec | bellard | DEBUG_ARG("so = %lx", (long )so); |
1262 | f0cbd3ec | bellard | |
1263 | a3d4af03 | bellard | #if 0
|
1264 | f0cbd3ec | bellard | /*
|
1265 | f0cbd3ec | bellard | * Check if they're authorised
|
1266 | f0cbd3ec | bellard | */
|
1267 | f0cbd3ec | bellard | if (ctl_addr.s_addr && (ctl_addr.s_addr == -1 || (so->so_laddr.s_addr != ctl_addr.s_addr))) {
|
1268 | f0cbd3ec | bellard | sb->sb_cc = sprintf(sb->sb_wptr,"Error: Permission denied.\r\n");
|
1269 | f0cbd3ec | bellard | sb->sb_wptr += sb->sb_cc;
|
1270 | f0cbd3ec | bellard | return 0;
|
1271 | f0cbd3ec | bellard | }
|
1272 | a3d4af03 | bellard | #endif
|
1273 | f0cbd3ec | bellard | command = (ntohl(so->so_faddr.s_addr) & 0xff);
|
1274 | f0cbd3ec | bellard | |
1275 | f0cbd3ec | bellard | switch(command) {
|
1276 | f0cbd3ec | bellard | default: /* Check for exec's */ |
1277 | f0cbd3ec | bellard | |
1278 | f0cbd3ec | bellard | /*
|
1279 | f0cbd3ec | bellard | * Check if it's pty_exec
|
1280 | f0cbd3ec | bellard | */
|
1281 | f0cbd3ec | bellard | for (ex_ptr = exec_list; ex_ptr; ex_ptr = ex_ptr->ex_next) {
|
1282 | f0cbd3ec | bellard | if (ex_ptr->ex_fport == so->so_fport &&
|
1283 | f0cbd3ec | bellard | command == ex_ptr->ex_addr) { |
1284 | f0cbd3ec | bellard | do_pty = ex_ptr->ex_pty; |
1285 | f0cbd3ec | bellard | goto do_exec;
|
1286 | f0cbd3ec | bellard | } |
1287 | f0cbd3ec | bellard | } |
1288 | f0cbd3ec | bellard | |
1289 | f0cbd3ec | bellard | /*
|
1290 | f0cbd3ec | bellard | * Nothing bound..
|
1291 | f0cbd3ec | bellard | */
|
1292 | f0cbd3ec | bellard | /* tcp_fconnect(so); */
|
1293 | f0cbd3ec | bellard | |
1294 | f0cbd3ec | bellard | /* FALLTHROUGH */
|
1295 | f0cbd3ec | bellard | case CTL_ALIAS:
|
1296 | f0cbd3ec | bellard | sb->sb_cc = sprintf(sb->sb_wptr, |
1297 | f0cbd3ec | bellard | "Error: No application configured.\r\n");
|
1298 | f0cbd3ec | bellard | sb->sb_wptr += sb->sb_cc; |
1299 | f0cbd3ec | bellard | return(0); |
1300 | f0cbd3ec | bellard | |
1301 | f0cbd3ec | bellard | do_exec:
|
1302 | f0cbd3ec | bellard | DEBUG_MISC((dfd, " executing %s \n",ex_ptr->ex_exec));
|
1303 | f0cbd3ec | bellard | return(fork_exec(so, ex_ptr->ex_exec, do_pty));
|
1304 | f0cbd3ec | bellard | |
1305 | a3d4af03 | bellard | #if 0
|
1306 | f0cbd3ec | bellard | case CTL_CMD:
|
1307 | f0cbd3ec | bellard | for (tmpso = tcb.so_next; tmpso != &tcb; tmpso = tmpso->so_next) {
|
1308 | f0cbd3ec | bellard | if (tmpso->so_emu == EMU_CTL &&
|
1309 | f0cbd3ec | bellard | !(tmpso->so_tcpcb?
|
1310 | f0cbd3ec | bellard | (tmpso->so_tcpcb->t_state & (TCPS_TIME_WAIT|TCPS_LAST_ACK))
|
1311 | f0cbd3ec | bellard | :0)) {
|
1312 | f0cbd3ec | bellard | /* Ooops, control connection already active */
|
1313 | f0cbd3ec | bellard | sb->sb_cc = sprintf(sb->sb_wptr,"Sorry, already connected.\r\n");
|
1314 | f0cbd3ec | bellard | sb->sb_wptr += sb->sb_cc;
|
1315 | f0cbd3ec | bellard | return 0;
|
1316 | f0cbd3ec | bellard | }
|
1317 | f0cbd3ec | bellard | }
|
1318 | f0cbd3ec | bellard | so->so_emu = EMU_CTL;
|
1319 | f0cbd3ec | bellard | ctl_password_ok = 0;
|
1320 | f0cbd3ec | bellard | sb->sb_cc = sprintf(sb->sb_wptr, "Slirp command-line ready (type \"help\" for help).\r\nSlirp> ");
|
1321 | f0cbd3ec | bellard | sb->sb_wptr += sb->sb_cc;
|
1322 | f0cbd3ec | bellard | do_echo=-1;
|
1323 | f0cbd3ec | bellard | return(2);
|
1324 | f0cbd3ec | bellard | #endif
|
1325 | a3d4af03 | bellard | } |
1326 | f0cbd3ec | bellard | } |