root / slirp / socket.c @ 5dba48a8
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1 | f0cbd3ec | bellard | /*
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2 | f0cbd3ec | bellard | * Copyright (c) 1995 Danny Gasparovski.
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3 | 5fafdf24 | ths | *
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4 | 5fafdf24 | ths | * Please read the file COPYRIGHT for the
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5 | f0cbd3ec | bellard | * terms and conditions of the copyright.
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6 | f0cbd3ec | bellard | */
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7 | f0cbd3ec | bellard | |
8 | e1c5a2b3 | aliguori | #include "qemu-common.h" |
9 | f0cbd3ec | bellard | #include <slirp.h> |
10 | f0cbd3ec | bellard | #include "ip_icmp.h" |
11 | ec530c81 | bellard | #ifdef __sun__
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12 | ec530c81 | bellard | #include <sys/filio.h> |
13 | ec530c81 | bellard | #endif
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14 | f0cbd3ec | bellard | |
15 | 9634d903 | blueswir1 | static void sofcantrcvmore(struct socket *so); |
16 | 9634d903 | blueswir1 | static void sofcantsendmore(struct socket *so); |
17 | 9634d903 | blueswir1 | |
18 | f0cbd3ec | bellard | struct socket *
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19 | 511d2b14 | blueswir1 | solookup(struct socket *head, struct in_addr laddr, u_int lport, |
20 | 511d2b14 | blueswir1 | struct in_addr faddr, u_int fport)
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21 | f0cbd3ec | bellard | { |
22 | f0cbd3ec | bellard | struct socket *so;
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23 | 5fafdf24 | ths | |
24 | f0cbd3ec | bellard | for (so = head->so_next; so != head; so = so->so_next) {
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25 | 5fafdf24 | ths | if (so->so_lport == lport &&
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26 | f0cbd3ec | bellard | so->so_laddr.s_addr == laddr.s_addr && |
27 | f0cbd3ec | bellard | so->so_faddr.s_addr == faddr.s_addr && |
28 | f0cbd3ec | bellard | so->so_fport == fport) |
29 | f0cbd3ec | bellard | break;
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30 | f0cbd3ec | bellard | } |
31 | 5fafdf24 | ths | |
32 | f0cbd3ec | bellard | if (so == head)
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33 | f0cbd3ec | bellard | return (struct socket *)NULL; |
34 | f0cbd3ec | bellard | return so;
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35 | 5fafdf24 | ths | |
36 | f0cbd3ec | bellard | } |
37 | f0cbd3ec | bellard | |
38 | f0cbd3ec | bellard | /*
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39 | f0cbd3ec | bellard | * Create a new socket, initialise the fields
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40 | f0cbd3ec | bellard | * It is the responsibility of the caller to
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41 | f0cbd3ec | bellard | * insque() it into the correct linked-list
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42 | f0cbd3ec | bellard | */
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43 | f0cbd3ec | bellard | struct socket *
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44 | 460fec67 | Jan Kiszka | socreate(Slirp *slirp) |
45 | f0cbd3ec | bellard | { |
46 | f0cbd3ec | bellard | struct socket *so;
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47 | 5fafdf24 | ths | |
48 | f0cbd3ec | bellard | so = (struct socket *)malloc(sizeof(struct socket)); |
49 | f0cbd3ec | bellard | if(so) {
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50 | f0cbd3ec | bellard | memset(so, 0, sizeof(struct socket)); |
51 | f0cbd3ec | bellard | so->so_state = SS_NOFDREF; |
52 | f0cbd3ec | bellard | so->s = -1;
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53 | 460fec67 | Jan Kiszka | so->slirp = slirp; |
54 | f0cbd3ec | bellard | } |
55 | f0cbd3ec | bellard | return(so);
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56 | f0cbd3ec | bellard | } |
57 | f0cbd3ec | bellard | |
58 | f0cbd3ec | bellard | /*
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59 | f0cbd3ec | bellard | * remque and free a socket, clobber cache
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60 | f0cbd3ec | bellard | */
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61 | f0cbd3ec | bellard | void
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62 | 511d2b14 | blueswir1 | sofree(struct socket *so)
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63 | f0cbd3ec | bellard | { |
64 | 460fec67 | Jan Kiszka | Slirp *slirp = so->slirp; |
65 | 460fec67 | Jan Kiszka | |
66 | f0cbd3ec | bellard | if (so->so_emu==EMU_RSH && so->extra) {
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67 | f0cbd3ec | bellard | sofree(so->extra); |
68 | f0cbd3ec | bellard | so->extra=NULL;
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69 | f0cbd3ec | bellard | } |
70 | 460fec67 | Jan Kiszka | if (so == slirp->tcp_last_so) {
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71 | 460fec67 | Jan Kiszka | slirp->tcp_last_so = &slirp->tcb; |
72 | 460fec67 | Jan Kiszka | } else if (so == slirp->udp_last_so) { |
73 | 460fec67 | Jan Kiszka | slirp->udp_last_so = &slirp->udb; |
74 | 460fec67 | Jan Kiszka | } |
75 | f0cbd3ec | bellard | m_free(so->so_m); |
76 | 5fafdf24 | ths | |
77 | 5fafdf24 | ths | if(so->so_next && so->so_prev)
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78 | f0cbd3ec | bellard | remque(so); /* crashes if so is not in a queue */
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79 | f0cbd3ec | bellard | |
80 | f0cbd3ec | bellard | free(so); |
81 | f0cbd3ec | bellard | } |
82 | f0cbd3ec | bellard | |
83 | e1c5a2b3 | aliguori | size_t sopreprbuf(struct socket *so, struct iovec *iov, int *np) |
84 | f0cbd3ec | bellard | { |
85 | e1c5a2b3 | aliguori | int n, lss, total;
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86 | f0cbd3ec | bellard | struct sbuf *sb = &so->so_snd;
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87 | f0cbd3ec | bellard | int len = sb->sb_datalen - sb->sb_cc;
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88 | f0cbd3ec | bellard | int mss = so->so_tcpcb->t_maxseg;
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89 | 5fafdf24 | ths | |
90 | e1c5a2b3 | aliguori | DEBUG_CALL("sopreprbuf");
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91 | f0cbd3ec | bellard | DEBUG_ARG("so = %lx", (long )so); |
92 | 5fafdf24 | ths | |
93 | e1c5a2b3 | aliguori | if (len <= 0) |
94 | e1c5a2b3 | aliguori | return 0; |
95 | e1c5a2b3 | aliguori | |
96 | f0cbd3ec | bellard | iov[0].iov_base = sb->sb_wptr;
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97 | 66029f6a | blueswir1 | iov[1].iov_base = NULL; |
98 | 66029f6a | blueswir1 | iov[1].iov_len = 0; |
99 | f0cbd3ec | bellard | if (sb->sb_wptr < sb->sb_rptr) {
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100 | f0cbd3ec | bellard | iov[0].iov_len = sb->sb_rptr - sb->sb_wptr;
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101 | f0cbd3ec | bellard | /* Should never succeed, but... */
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102 | f0cbd3ec | bellard | if (iov[0].iov_len > len) |
103 | f0cbd3ec | bellard | iov[0].iov_len = len;
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104 | f0cbd3ec | bellard | if (iov[0].iov_len > mss) |
105 | f0cbd3ec | bellard | iov[0].iov_len -= iov[0].iov_len%mss; |
106 | f0cbd3ec | bellard | n = 1;
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107 | f0cbd3ec | bellard | } else {
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108 | f0cbd3ec | bellard | iov[0].iov_len = (sb->sb_data + sb->sb_datalen) - sb->sb_wptr;
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109 | f0cbd3ec | bellard | /* Should never succeed, but... */
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110 | f0cbd3ec | bellard | if (iov[0].iov_len > len) iov[0].iov_len = len; |
111 | f0cbd3ec | bellard | len -= iov[0].iov_len;
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112 | f0cbd3ec | bellard | if (len) {
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113 | f0cbd3ec | bellard | iov[1].iov_base = sb->sb_data;
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114 | f0cbd3ec | bellard | iov[1].iov_len = sb->sb_rptr - sb->sb_data;
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115 | f0cbd3ec | bellard | if(iov[1].iov_len > len) |
116 | f0cbd3ec | bellard | iov[1].iov_len = len;
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117 | f0cbd3ec | bellard | total = iov[0].iov_len + iov[1].iov_len; |
118 | f0cbd3ec | bellard | if (total > mss) {
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119 | f0cbd3ec | bellard | lss = total%mss; |
120 | f0cbd3ec | bellard | if (iov[1].iov_len > lss) { |
121 | f0cbd3ec | bellard | iov[1].iov_len -= lss;
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122 | f0cbd3ec | bellard | n = 2;
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123 | f0cbd3ec | bellard | } else {
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124 | f0cbd3ec | bellard | lss -= iov[1].iov_len;
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125 | f0cbd3ec | bellard | iov[0].iov_len -= lss;
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126 | f0cbd3ec | bellard | n = 1;
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127 | f0cbd3ec | bellard | } |
128 | f0cbd3ec | bellard | } else
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129 | f0cbd3ec | bellard | n = 2;
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130 | f0cbd3ec | bellard | } else {
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131 | f0cbd3ec | bellard | if (iov[0].iov_len > mss) |
132 | f0cbd3ec | bellard | iov[0].iov_len -= iov[0].iov_len%mss; |
133 | f0cbd3ec | bellard | n = 1;
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134 | f0cbd3ec | bellard | } |
135 | f0cbd3ec | bellard | } |
136 | e1c5a2b3 | aliguori | if (np)
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137 | e1c5a2b3 | aliguori | *np = n; |
138 | e1c5a2b3 | aliguori | |
139 | e1c5a2b3 | aliguori | return iov[0].iov_len + (n - 1) * iov[1].iov_len; |
140 | e1c5a2b3 | aliguori | } |
141 | e1c5a2b3 | aliguori | |
142 | e1c5a2b3 | aliguori | /*
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143 | e1c5a2b3 | aliguori | * Read from so's socket into sb_snd, updating all relevant sbuf fields
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144 | e1c5a2b3 | aliguori | * NOTE: This will only be called if it is select()ed for reading, so
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145 | e1c5a2b3 | aliguori | * a read() of 0 (or less) means it's disconnected
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146 | e1c5a2b3 | aliguori | */
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147 | e1c5a2b3 | aliguori | int
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148 | 511d2b14 | blueswir1 | soread(struct socket *so)
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149 | e1c5a2b3 | aliguori | { |
150 | e1c5a2b3 | aliguori | int n, nn;
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151 | e1c5a2b3 | aliguori | struct sbuf *sb = &so->so_snd;
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152 | e1c5a2b3 | aliguori | struct iovec iov[2]; |
153 | e1c5a2b3 | aliguori | |
154 | e1c5a2b3 | aliguori | DEBUG_CALL("soread");
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155 | e1c5a2b3 | aliguori | DEBUG_ARG("so = %lx", (long )so); |
156 | e1c5a2b3 | aliguori | |
157 | e1c5a2b3 | aliguori | /*
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158 | e1c5a2b3 | aliguori | * No need to check if there's enough room to read.
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159 | e1c5a2b3 | aliguori | * soread wouldn't have been called if there weren't
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160 | e1c5a2b3 | aliguori | */
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161 | e1c5a2b3 | aliguori | sopreprbuf(so, iov, &n); |
162 | 5fafdf24 | ths | |
163 | f0cbd3ec | bellard | #ifdef HAVE_READV
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164 | f0cbd3ec | bellard | nn = readv(so->s, (struct iovec *)iov, n);
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165 | f0cbd3ec | bellard | DEBUG_MISC((dfd, " ... read nn = %d bytes\n", nn));
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166 | f0cbd3ec | bellard | #else
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167 | 02d2c54c | bellard | nn = recv(so->s, iov[0].iov_base, iov[0].iov_len,0); |
168 | 5fafdf24 | ths | #endif
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169 | f0cbd3ec | bellard | if (nn <= 0) { |
170 | f0cbd3ec | bellard | if (nn < 0 && (errno == EINTR || errno == EAGAIN)) |
171 | f0cbd3ec | bellard | return 0; |
172 | f0cbd3ec | bellard | else {
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173 | f0cbd3ec | bellard | DEBUG_MISC((dfd, " --- soread() disconnected, nn = %d, errno = %d-%s\n", nn, errno,strerror(errno)));
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174 | f0cbd3ec | bellard | sofcantrcvmore(so); |
175 | f0cbd3ec | bellard | tcp_sockclosed(sototcpcb(so)); |
176 | f0cbd3ec | bellard | return -1; |
177 | f0cbd3ec | bellard | } |
178 | f0cbd3ec | bellard | } |
179 | 5fafdf24 | ths | |
180 | f0cbd3ec | bellard | #ifndef HAVE_READV
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181 | f0cbd3ec | bellard | /*
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182 | f0cbd3ec | bellard | * If there was no error, try and read the second time round
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183 | f0cbd3ec | bellard | * We read again if n = 2 (ie, there's another part of the buffer)
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184 | f0cbd3ec | bellard | * and we read as much as we could in the first read
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185 | f0cbd3ec | bellard | * We don't test for <= 0 this time, because there legitimately
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186 | f0cbd3ec | bellard | * might not be any more data (since the socket is non-blocking),
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187 | f0cbd3ec | bellard | * a close will be detected on next iteration.
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188 | f0cbd3ec | bellard | * A return of -1 wont (shouldn't) happen, since it didn't happen above
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189 | f0cbd3ec | bellard | */
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190 | 17444c9c | bellard | if (n == 2 && nn == iov[0].iov_len) { |
191 | 17444c9c | bellard | int ret;
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192 | 17444c9c | bellard | ret = recv(so->s, iov[1].iov_base, iov[1].iov_len,0); |
193 | 17444c9c | bellard | if (ret > 0) |
194 | 17444c9c | bellard | nn += ret; |
195 | 17444c9c | bellard | } |
196 | 5fafdf24 | ths | |
197 | f0cbd3ec | bellard | DEBUG_MISC((dfd, " ... read nn = %d bytes\n", nn));
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198 | f0cbd3ec | bellard | #endif
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199 | 5fafdf24 | ths | |
200 | f0cbd3ec | bellard | /* Update fields */
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201 | f0cbd3ec | bellard | sb->sb_cc += nn; |
202 | f0cbd3ec | bellard | sb->sb_wptr += nn; |
203 | f0cbd3ec | bellard | if (sb->sb_wptr >= (sb->sb_data + sb->sb_datalen))
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204 | f0cbd3ec | bellard | sb->sb_wptr -= sb->sb_datalen; |
205 | f0cbd3ec | bellard | return nn;
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206 | f0cbd3ec | bellard | } |
207 | 5fafdf24 | ths | |
208 | e1c5a2b3 | aliguori | int soreadbuf(struct socket *so, const char *buf, int size) |
209 | e1c5a2b3 | aliguori | { |
210 | e1c5a2b3 | aliguori | int n, nn, copy = size;
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211 | e1c5a2b3 | aliguori | struct sbuf *sb = &so->so_snd;
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212 | e1c5a2b3 | aliguori | struct iovec iov[2]; |
213 | e1c5a2b3 | aliguori | |
214 | e1c5a2b3 | aliguori | DEBUG_CALL("soreadbuf");
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215 | e1c5a2b3 | aliguori | DEBUG_ARG("so = %lx", (long )so); |
216 | e1c5a2b3 | aliguori | |
217 | e1c5a2b3 | aliguori | /*
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218 | e1c5a2b3 | aliguori | * No need to check if there's enough room to read.
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219 | e1c5a2b3 | aliguori | * soread wouldn't have been called if there weren't
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220 | e1c5a2b3 | aliguori | */
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221 | e1c5a2b3 | aliguori | if (sopreprbuf(so, iov, &n) < size)
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222 | e1c5a2b3 | aliguori | goto err;
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223 | e1c5a2b3 | aliguori | |
224 | e1c5a2b3 | aliguori | nn = MIN(iov[0].iov_len, copy);
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225 | e1c5a2b3 | aliguori | memcpy(iov[0].iov_base, buf, nn);
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226 | e1c5a2b3 | aliguori | |
227 | e1c5a2b3 | aliguori | copy -= nn; |
228 | e1c5a2b3 | aliguori | buf += nn; |
229 | e1c5a2b3 | aliguori | |
230 | e1c5a2b3 | aliguori | if (copy == 0) |
231 | e1c5a2b3 | aliguori | goto done;
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232 | e1c5a2b3 | aliguori | |
233 | e1c5a2b3 | aliguori | memcpy(iov[1].iov_base, buf, copy);
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234 | e1c5a2b3 | aliguori | |
235 | e1c5a2b3 | aliguori | done:
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236 | e1c5a2b3 | aliguori | /* Update fields */
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237 | e1c5a2b3 | aliguori | sb->sb_cc += size; |
238 | e1c5a2b3 | aliguori | sb->sb_wptr += size; |
239 | e1c5a2b3 | aliguori | if (sb->sb_wptr >= (sb->sb_data + sb->sb_datalen))
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240 | e1c5a2b3 | aliguori | sb->sb_wptr -= sb->sb_datalen; |
241 | e1c5a2b3 | aliguori | return size;
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242 | e1c5a2b3 | aliguori | err:
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243 | e1c5a2b3 | aliguori | |
244 | e1c5a2b3 | aliguori | sofcantrcvmore(so); |
245 | e1c5a2b3 | aliguori | tcp_sockclosed(sototcpcb(so)); |
246 | e1c5a2b3 | aliguori | fprintf(stderr, "soreadbuf buffer to small");
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247 | e1c5a2b3 | aliguori | return -1; |
248 | e1c5a2b3 | aliguori | } |
249 | e1c5a2b3 | aliguori | |
250 | f0cbd3ec | bellard | /*
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251 | f0cbd3ec | bellard | * Get urgent data
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252 | 5fafdf24 | ths | *
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253 | f0cbd3ec | bellard | * When the socket is created, we set it SO_OOBINLINE,
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254 | f0cbd3ec | bellard | * so when OOB data arrives, we soread() it and everything
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255 | f0cbd3ec | bellard | * in the send buffer is sent as urgent data
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256 | f0cbd3ec | bellard | */
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257 | f0cbd3ec | bellard | void
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258 | 511d2b14 | blueswir1 | sorecvoob(struct socket *so)
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259 | f0cbd3ec | bellard | { |
260 | f0cbd3ec | bellard | struct tcpcb *tp = sototcpcb(so);
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261 | f0cbd3ec | bellard | |
262 | f0cbd3ec | bellard | DEBUG_CALL("sorecvoob");
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263 | f0cbd3ec | bellard | DEBUG_ARG("so = %lx", (long)so); |
264 | 5fafdf24 | ths | |
265 | f0cbd3ec | bellard | /*
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266 | f0cbd3ec | bellard | * We take a guess at how much urgent data has arrived.
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267 | f0cbd3ec | bellard | * In most situations, when urgent data arrives, the next
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268 | f0cbd3ec | bellard | * read() should get all the urgent data. This guess will
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269 | f0cbd3ec | bellard | * be wrong however if more data arrives just after the
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270 | 5fafdf24 | ths | * urgent data, or the read() doesn't return all the
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271 | f0cbd3ec | bellard | * urgent data.
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272 | f0cbd3ec | bellard | */
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273 | f0cbd3ec | bellard | soread(so); |
274 | f0cbd3ec | bellard | tp->snd_up = tp->snd_una + so->so_snd.sb_cc; |
275 | f0cbd3ec | bellard | tp->t_force = 1;
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276 | f0cbd3ec | bellard | tcp_output(tp); |
277 | f0cbd3ec | bellard | tp->t_force = 0;
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278 | f0cbd3ec | bellard | } |
279 | f0cbd3ec | bellard | |
280 | f0cbd3ec | bellard | /*
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281 | f0cbd3ec | bellard | * Send urgent data
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282 | f0cbd3ec | bellard | * There's a lot duplicated code here, but...
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283 | f0cbd3ec | bellard | */
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284 | f0cbd3ec | bellard | int
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285 | 511d2b14 | blueswir1 | sosendoob(struct socket *so)
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286 | f0cbd3ec | bellard | { |
287 | f0cbd3ec | bellard | struct sbuf *sb = &so->so_rcv;
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288 | f0cbd3ec | bellard | char buff[2048]; /* XXX Shouldn't be sending more oob data than this */ |
289 | 5fafdf24 | ths | |
290 | f0cbd3ec | bellard | int n, len;
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291 | 5fafdf24 | ths | |
292 | f0cbd3ec | bellard | DEBUG_CALL("sosendoob");
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293 | f0cbd3ec | bellard | DEBUG_ARG("so = %lx", (long)so); |
294 | f0cbd3ec | bellard | DEBUG_ARG("sb->sb_cc = %d", sb->sb_cc);
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295 | 5fafdf24 | ths | |
296 | f0cbd3ec | bellard | if (so->so_urgc > 2048) |
297 | f0cbd3ec | bellard | so->so_urgc = 2048; /* XXXX */ |
298 | 5fafdf24 | ths | |
299 | f0cbd3ec | bellard | if (sb->sb_rptr < sb->sb_wptr) {
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300 | f0cbd3ec | bellard | /* We can send it directly */
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301 | e1c5a2b3 | aliguori | n = slirp_send(so, sb->sb_rptr, so->so_urgc, (MSG_OOB)); /* |MSG_DONTWAIT)); */
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302 | f0cbd3ec | bellard | so->so_urgc -= n; |
303 | 3b46e624 | ths | |
304 | f0cbd3ec | bellard | DEBUG_MISC((dfd, " --- sent %d bytes urgent data, %d urgent bytes left\n", n, so->so_urgc));
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305 | f0cbd3ec | bellard | } else {
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306 | 5fafdf24 | ths | /*
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307 | f0cbd3ec | bellard | * Since there's no sendv or sendtov like writev,
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308 | f0cbd3ec | bellard | * we must copy all data to a linear buffer then
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309 | f0cbd3ec | bellard | * send it all
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310 | f0cbd3ec | bellard | */
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311 | f0cbd3ec | bellard | len = (sb->sb_data + sb->sb_datalen) - sb->sb_rptr; |
312 | f0cbd3ec | bellard | if (len > so->so_urgc) len = so->so_urgc;
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313 | f0cbd3ec | bellard | memcpy(buff, sb->sb_rptr, len); |
314 | f0cbd3ec | bellard | so->so_urgc -= len; |
315 | f0cbd3ec | bellard | if (so->so_urgc) {
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316 | f0cbd3ec | bellard | n = sb->sb_wptr - sb->sb_data; |
317 | f0cbd3ec | bellard | if (n > so->so_urgc) n = so->so_urgc;
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318 | f0cbd3ec | bellard | memcpy((buff + len), sb->sb_data, n); |
319 | f0cbd3ec | bellard | so->so_urgc -= n; |
320 | f0cbd3ec | bellard | len += n; |
321 | f0cbd3ec | bellard | } |
322 | e1c5a2b3 | aliguori | n = slirp_send(so, buff, len, (MSG_OOB)); /* |MSG_DONTWAIT)); */
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323 | f0cbd3ec | bellard | #ifdef DEBUG
|
324 | f0cbd3ec | bellard | if (n != len)
|
325 | f0cbd3ec | bellard | DEBUG_ERROR((dfd, "Didn't send all data urgently XXXXX\n"));
|
326 | 3b46e624 | ths | #endif
|
327 | f0cbd3ec | bellard | DEBUG_MISC((dfd, " ---2 sent %d bytes urgent data, %d urgent bytes left\n", n, so->so_urgc));
|
328 | f0cbd3ec | bellard | } |
329 | 5fafdf24 | ths | |
330 | f0cbd3ec | bellard | sb->sb_cc -= n; |
331 | f0cbd3ec | bellard | sb->sb_rptr += n; |
332 | f0cbd3ec | bellard | if (sb->sb_rptr >= (sb->sb_data + sb->sb_datalen))
|
333 | f0cbd3ec | bellard | sb->sb_rptr -= sb->sb_datalen; |
334 | 5fafdf24 | ths | |
335 | f0cbd3ec | bellard | return n;
|
336 | f0cbd3ec | bellard | } |
337 | f0cbd3ec | bellard | |
338 | f0cbd3ec | bellard | /*
|
339 | 5fafdf24 | ths | * Write data from so_rcv to so's socket,
|
340 | f0cbd3ec | bellard | * updating all sbuf field as necessary
|
341 | f0cbd3ec | bellard | */
|
342 | f0cbd3ec | bellard | int
|
343 | 511d2b14 | blueswir1 | sowrite(struct socket *so)
|
344 | f0cbd3ec | bellard | { |
345 | f0cbd3ec | bellard | int n,nn;
|
346 | f0cbd3ec | bellard | struct sbuf *sb = &so->so_rcv;
|
347 | f0cbd3ec | bellard | int len = sb->sb_cc;
|
348 | f0cbd3ec | bellard | struct iovec iov[2]; |
349 | 5fafdf24 | ths | |
350 | f0cbd3ec | bellard | DEBUG_CALL("sowrite");
|
351 | f0cbd3ec | bellard | DEBUG_ARG("so = %lx", (long)so); |
352 | 5fafdf24 | ths | |
353 | f0cbd3ec | bellard | if (so->so_urgc) {
|
354 | f0cbd3ec | bellard | sosendoob(so); |
355 | f0cbd3ec | bellard | if (sb->sb_cc == 0) |
356 | f0cbd3ec | bellard | return 0; |
357 | f0cbd3ec | bellard | } |
358 | f0cbd3ec | bellard | |
359 | f0cbd3ec | bellard | /*
|
360 | f0cbd3ec | bellard | * No need to check if there's something to write,
|
361 | f0cbd3ec | bellard | * sowrite wouldn't have been called otherwise
|
362 | f0cbd3ec | bellard | */
|
363 | 5fafdf24 | ths | |
364 | f0cbd3ec | bellard | iov[0].iov_base = sb->sb_rptr;
|
365 | 66029f6a | blueswir1 | iov[1].iov_base = NULL; |
366 | 66029f6a | blueswir1 | iov[1].iov_len = 0; |
367 | f0cbd3ec | bellard | if (sb->sb_rptr < sb->sb_wptr) {
|
368 | f0cbd3ec | bellard | iov[0].iov_len = sb->sb_wptr - sb->sb_rptr;
|
369 | f0cbd3ec | bellard | /* Should never succeed, but... */
|
370 | f0cbd3ec | bellard | if (iov[0].iov_len > len) iov[0].iov_len = len; |
371 | f0cbd3ec | bellard | n = 1;
|
372 | f0cbd3ec | bellard | } else {
|
373 | f0cbd3ec | bellard | iov[0].iov_len = (sb->sb_data + sb->sb_datalen) - sb->sb_rptr;
|
374 | f0cbd3ec | bellard | if (iov[0].iov_len > len) iov[0].iov_len = len; |
375 | f0cbd3ec | bellard | len -= iov[0].iov_len;
|
376 | f0cbd3ec | bellard | if (len) {
|
377 | f0cbd3ec | bellard | iov[1].iov_base = sb->sb_data;
|
378 | f0cbd3ec | bellard | iov[1].iov_len = sb->sb_wptr - sb->sb_data;
|
379 | f0cbd3ec | bellard | if (iov[1].iov_len > len) iov[1].iov_len = len; |
380 | f0cbd3ec | bellard | n = 2;
|
381 | f0cbd3ec | bellard | } else
|
382 | f0cbd3ec | bellard | n = 1;
|
383 | f0cbd3ec | bellard | } |
384 | f0cbd3ec | bellard | /* Check if there's urgent data to send, and if so, send it */
|
385 | f0cbd3ec | bellard | |
386 | f0cbd3ec | bellard | #ifdef HAVE_READV
|
387 | f0cbd3ec | bellard | nn = writev(so->s, (const struct iovec *)iov, n); |
388 | 5fafdf24 | ths | |
389 | f0cbd3ec | bellard | DEBUG_MISC((dfd, " ... wrote nn = %d bytes\n", nn));
|
390 | f0cbd3ec | bellard | #else
|
391 | e1c5a2b3 | aliguori | nn = slirp_send(so, iov[0].iov_base, iov[0].iov_len,0); |
392 | f0cbd3ec | bellard | #endif
|
393 | f0cbd3ec | bellard | /* This should never happen, but people tell me it does *shrug* */
|
394 | f0cbd3ec | bellard | if (nn < 0 && (errno == EAGAIN || errno == EINTR)) |
395 | f0cbd3ec | bellard | return 0; |
396 | 5fafdf24 | ths | |
397 | f0cbd3ec | bellard | if (nn <= 0) { |
398 | f0cbd3ec | bellard | DEBUG_MISC((dfd, " --- sowrite disconnected, so->so_state = %x, errno = %d\n",
|
399 | f0cbd3ec | bellard | so->so_state, errno)); |
400 | f0cbd3ec | bellard | sofcantsendmore(so); |
401 | f0cbd3ec | bellard | tcp_sockclosed(sototcpcb(so)); |
402 | f0cbd3ec | bellard | return -1; |
403 | f0cbd3ec | bellard | } |
404 | 5fafdf24 | ths | |
405 | f0cbd3ec | bellard | #ifndef HAVE_READV
|
406 | 3bc2175d | bellard | if (n == 2 && nn == iov[0].iov_len) { |
407 | 3bc2175d | bellard | int ret;
|
408 | e1c5a2b3 | aliguori | ret = slirp_send(so, iov[1].iov_base, iov[1].iov_len,0); |
409 | 3bc2175d | bellard | if (ret > 0) |
410 | 3bc2175d | bellard | nn += ret; |
411 | 3bc2175d | bellard | } |
412 | f0cbd3ec | bellard | DEBUG_MISC((dfd, " ... wrote nn = %d bytes\n", nn));
|
413 | f0cbd3ec | bellard | #endif
|
414 | 5fafdf24 | ths | |
415 | f0cbd3ec | bellard | /* Update sbuf */
|
416 | f0cbd3ec | bellard | sb->sb_cc -= nn; |
417 | f0cbd3ec | bellard | sb->sb_rptr += nn; |
418 | f0cbd3ec | bellard | if (sb->sb_rptr >= (sb->sb_data + sb->sb_datalen))
|
419 | f0cbd3ec | bellard | sb->sb_rptr -= sb->sb_datalen; |
420 | 5fafdf24 | ths | |
421 | f0cbd3ec | bellard | /*
|
422 | f0cbd3ec | bellard | * If in DRAIN mode, and there's no more data, set
|
423 | f0cbd3ec | bellard | * it CANTSENDMORE
|
424 | f0cbd3ec | bellard | */
|
425 | f0cbd3ec | bellard | if ((so->so_state & SS_FWDRAIN) && sb->sb_cc == 0) |
426 | f0cbd3ec | bellard | sofcantsendmore(so); |
427 | 5fafdf24 | ths | |
428 | f0cbd3ec | bellard | return nn;
|
429 | f0cbd3ec | bellard | } |
430 | f0cbd3ec | bellard | |
431 | f0cbd3ec | bellard | /*
|
432 | f0cbd3ec | bellard | * recvfrom() a UDP socket
|
433 | f0cbd3ec | bellard | */
|
434 | f0cbd3ec | bellard | void
|
435 | 511d2b14 | blueswir1 | sorecvfrom(struct socket *so)
|
436 | f0cbd3ec | bellard | { |
437 | f0cbd3ec | bellard | struct sockaddr_in addr;
|
438 | 242acf3a | balrog | socklen_t addrlen = sizeof(struct sockaddr_in); |
439 | 5fafdf24 | ths | |
440 | f0cbd3ec | bellard | DEBUG_CALL("sorecvfrom");
|
441 | f0cbd3ec | bellard | DEBUG_ARG("so = %lx", (long)so); |
442 | 5fafdf24 | ths | |
443 | f0cbd3ec | bellard | if (so->so_type == IPPROTO_ICMP) { /* This is a "ping" reply */ |
444 | f0cbd3ec | bellard | char buff[256]; |
445 | f0cbd3ec | bellard | int len;
|
446 | 3b46e624 | ths | |
447 | 5fafdf24 | ths | len = recvfrom(so->s, buff, 256, 0, |
448 | f0cbd3ec | bellard | (struct sockaddr *)&addr, &addrlen);
|
449 | f0cbd3ec | bellard | /* XXX Check if reply is "correct"? */
|
450 | 3b46e624 | ths | |
451 | f0cbd3ec | bellard | if(len == -1 || len == 0) { |
452 | f0cbd3ec | bellard | u_char code=ICMP_UNREACH_PORT; |
453 | f0cbd3ec | bellard | |
454 | f0cbd3ec | bellard | if(errno == EHOSTUNREACH) code=ICMP_UNREACH_HOST;
|
455 | f0cbd3ec | bellard | else if(errno == ENETUNREACH) code=ICMP_UNREACH_NET; |
456 | 3b46e624 | ths | |
457 | f0cbd3ec | bellard | DEBUG_MISC((dfd," udp icmp rx errno = %d-%s\n",
|
458 | f0cbd3ec | bellard | errno,strerror(errno))); |
459 | f0cbd3ec | bellard | icmp_error(so->so_m, ICMP_UNREACH,code, 0,strerror(errno));
|
460 | f0cbd3ec | bellard | } else {
|
461 | f0cbd3ec | bellard | icmp_reflect(so->so_m); |
462 | 511d2b14 | blueswir1 | so->so_m = NULL; /* Don't m_free() it again! */ |
463 | f0cbd3ec | bellard | } |
464 | f0cbd3ec | bellard | /* No need for this socket anymore, udp_detach it */
|
465 | f0cbd3ec | bellard | udp_detach(so); |
466 | f0cbd3ec | bellard | } else { /* A "normal" UDP packet */ |
467 | f0cbd3ec | bellard | struct mbuf *m;
|
468 | c5b76b38 | Blue Swirl | int len;
|
469 | c5b76b38 | Blue Swirl | #ifdef _WIN32
|
470 | c5b76b38 | Blue Swirl | unsigned long n; |
471 | c5b76b38 | Blue Swirl | #else
|
472 | c5b76b38 | Blue Swirl | int n;
|
473 | c5b76b38 | Blue Swirl | #endif
|
474 | f0cbd3ec | bellard | |
475 | 460fec67 | Jan Kiszka | m = m_get(so->slirp); |
476 | 460fec67 | Jan Kiszka | if (!m) {
|
477 | 460fec67 | Jan Kiszka | return;
|
478 | 460fec67 | Jan Kiszka | } |
479 | 9634d903 | blueswir1 | m->m_data += IF_MAXLINKHDR; |
480 | 3b46e624 | ths | |
481 | 5fafdf24 | ths | /*
|
482 | f0cbd3ec | bellard | * XXX Shouldn't FIONREAD packets destined for port 53,
|
483 | f0cbd3ec | bellard | * but I don't know the max packet size for DNS lookups
|
484 | f0cbd3ec | bellard | */
|
485 | f0cbd3ec | bellard | len = M_FREEROOM(m); |
486 | f0cbd3ec | bellard | /* if (so->so_fport != htons(53)) { */
|
487 | 379ff53d | bellard | ioctlsocket(so->s, FIONREAD, &n); |
488 | 3b46e624 | ths | |
489 | f0cbd3ec | bellard | if (n > len) {
|
490 | f0cbd3ec | bellard | n = (m->m_data - m->m_dat) + m->m_len + n + 1;
|
491 | f0cbd3ec | bellard | m_inc(m, n); |
492 | f0cbd3ec | bellard | len = M_FREEROOM(m); |
493 | f0cbd3ec | bellard | } |
494 | f0cbd3ec | bellard | /* } */
|
495 | 3b46e624 | ths | |
496 | f0cbd3ec | bellard | m->m_len = recvfrom(so->s, m->m_data, len, 0,
|
497 | f0cbd3ec | bellard | (struct sockaddr *)&addr, &addrlen);
|
498 | 5fafdf24 | ths | DEBUG_MISC((dfd, " did recvfrom %d, errno = %d-%s\n",
|
499 | f0cbd3ec | bellard | m->m_len, errno,strerror(errno))); |
500 | f0cbd3ec | bellard | if(m->m_len<0) { |
501 | f0cbd3ec | bellard | u_char code=ICMP_UNREACH_PORT; |
502 | f0cbd3ec | bellard | |
503 | f0cbd3ec | bellard | if(errno == EHOSTUNREACH) code=ICMP_UNREACH_HOST;
|
504 | f0cbd3ec | bellard | else if(errno == ENETUNREACH) code=ICMP_UNREACH_NET; |
505 | 3b46e624 | ths | |
506 | f0cbd3ec | bellard | DEBUG_MISC((dfd," rx error, tx icmp ICMP_UNREACH:%i\n", code));
|
507 | f0cbd3ec | bellard | icmp_error(so->so_m, ICMP_UNREACH,code, 0,strerror(errno));
|
508 | f0cbd3ec | bellard | m_free(m); |
509 | f0cbd3ec | bellard | } else {
|
510 | f0cbd3ec | bellard | /*
|
511 | f0cbd3ec | bellard | * Hack: domain name lookup will be used the most for UDP,
|
512 | f0cbd3ec | bellard | * and since they'll only be used once there's no need
|
513 | f0cbd3ec | bellard | * for the 4 minute (or whatever) timeout... So we time them
|
514 | f0cbd3ec | bellard | * out much quicker (10 seconds for now...)
|
515 | f0cbd3ec | bellard | */
|
516 | f0cbd3ec | bellard | if (so->so_expire) {
|
517 | f0cbd3ec | bellard | if (so->so_fport == htons(53)) |
518 | f0cbd3ec | bellard | so->so_expire = curtime + SO_EXPIREFAST; |
519 | f0cbd3ec | bellard | else
|
520 | f0cbd3ec | bellard | so->so_expire = curtime + SO_EXPIRE; |
521 | f0cbd3ec | bellard | } |
522 | f0cbd3ec | bellard | |
523 | 5fafdf24 | ths | /*
|
524 | f0cbd3ec | bellard | * If this packet was destined for CTL_ADDR,
|
525 | f0cbd3ec | bellard | * make it look like that's where it came from, done by udp_output
|
526 | f0cbd3ec | bellard | */
|
527 | f0cbd3ec | bellard | udp_output(so, m, &addr); |
528 | f0cbd3ec | bellard | } /* rx error */
|
529 | f0cbd3ec | bellard | } /* if ping packet */
|
530 | f0cbd3ec | bellard | } |
531 | f0cbd3ec | bellard | |
532 | f0cbd3ec | bellard | /*
|
533 | f0cbd3ec | bellard | * sendto() a socket
|
534 | f0cbd3ec | bellard | */
|
535 | f0cbd3ec | bellard | int
|
536 | 511d2b14 | blueswir1 | sosendto(struct socket *so, struct mbuf *m) |
537 | f0cbd3ec | bellard | { |
538 | 460fec67 | Jan Kiszka | Slirp *slirp = so->slirp; |
539 | f0cbd3ec | bellard | int ret;
|
540 | f0cbd3ec | bellard | struct sockaddr_in addr;
|
541 | f0cbd3ec | bellard | |
542 | f0cbd3ec | bellard | DEBUG_CALL("sosendto");
|
543 | f0cbd3ec | bellard | DEBUG_ARG("so = %lx", (long)so); |
544 | f0cbd3ec | bellard | DEBUG_ARG("m = %lx", (long)m); |
545 | 5fafdf24 | ths | |
546 | f0cbd3ec | bellard | addr.sin_family = AF_INET; |
547 | 460fec67 | Jan Kiszka | if ((so->so_faddr.s_addr & slirp->vnetwork_mask.s_addr) ==
|
548 | 460fec67 | Jan Kiszka | slirp->vnetwork_addr.s_addr) { |
549 | f0cbd3ec | bellard | /* It's an alias */
|
550 | 460fec67 | Jan Kiszka | if (so->so_faddr.s_addr == slirp->vnameserver_addr.s_addr) {
|
551 | df7a86ed | Ed Swierk | if (get_dns_addr(&addr.sin_addr) < 0) |
552 | df7a86ed | Ed Swierk | addr.sin_addr = loopback_addr; |
553 | a13a4126 | Jan Kiszka | } else {
|
554 | f0cbd3ec | bellard | addr.sin_addr = loopback_addr; |
555 | f0cbd3ec | bellard | } |
556 | f0cbd3ec | bellard | } else
|
557 | f0cbd3ec | bellard | addr.sin_addr = so->so_faddr; |
558 | f0cbd3ec | bellard | addr.sin_port = so->so_fport; |
559 | f0cbd3ec | bellard | |
560 | f0cbd3ec | bellard | DEBUG_MISC((dfd, " sendto()ing, addr.sin_port=%d, addr.sin_addr.s_addr=%.16s\n", ntohs(addr.sin_port), inet_ntoa(addr.sin_addr)));
|
561 | 5fafdf24 | ths | |
562 | f0cbd3ec | bellard | /* Don't care what port we get */
|
563 | f0cbd3ec | bellard | ret = sendto(so->s, m->m_data, m->m_len, 0,
|
564 | f0cbd3ec | bellard | (struct sockaddr *)&addr, sizeof (struct sockaddr)); |
565 | f0cbd3ec | bellard | if (ret < 0) |
566 | f0cbd3ec | bellard | return -1; |
567 | 5fafdf24 | ths | |
568 | f0cbd3ec | bellard | /*
|
569 | f0cbd3ec | bellard | * Kill the socket if there's no reply in 4 minutes,
|
570 | f0cbd3ec | bellard | * but only if it's an expirable socket
|
571 | f0cbd3ec | bellard | */
|
572 | f0cbd3ec | bellard | if (so->so_expire)
|
573 | f0cbd3ec | bellard | so->so_expire = curtime + SO_EXPIRE; |
574 | f932b6ce | Jan Kiszka | so->so_state &= SS_PERSISTENT_MASK; |
575 | f932b6ce | Jan Kiszka | so->so_state |= SS_ISFCONNECTED; /* So that it gets select()ed */
|
576 | f0cbd3ec | bellard | return 0; |
577 | f0cbd3ec | bellard | } |
578 | f0cbd3ec | bellard | |
579 | f0cbd3ec | bellard | /*
|
580 | 3c6a0580 | Jan Kiszka | * Listen for incoming TCP connections
|
581 | f0cbd3ec | bellard | */
|
582 | f0cbd3ec | bellard | struct socket *
|
583 | b6dce92e | Stefan Weil | tcp_listen(Slirp *slirp, uint32_t haddr, u_int hport, uint32_t laddr, |
584 | 460fec67 | Jan Kiszka | u_int lport, int flags)
|
585 | f0cbd3ec | bellard | { |
586 | f0cbd3ec | bellard | struct sockaddr_in addr;
|
587 | f0cbd3ec | bellard | struct socket *so;
|
588 | 242acf3a | balrog | int s, opt = 1; |
589 | 242acf3a | balrog | socklen_t addrlen = sizeof(addr);
|
590 | ab07b980 | Juha Riihimäki | memset(&addr, 0, addrlen);
|
591 | f0cbd3ec | bellard | |
592 | 3c6a0580 | Jan Kiszka | DEBUG_CALL("tcp_listen");
|
593 | 9f349498 | Jan Kiszka | DEBUG_ARG("haddr = %x", haddr);
|
594 | 9f349498 | Jan Kiszka | DEBUG_ARG("hport = %d", hport);
|
595 | f0cbd3ec | bellard | DEBUG_ARG("laddr = %x", laddr);
|
596 | f0cbd3ec | bellard | DEBUG_ARG("lport = %d", lport);
|
597 | f0cbd3ec | bellard | DEBUG_ARG("flags = %x", flags);
|
598 | 5fafdf24 | ths | |
599 | 460fec67 | Jan Kiszka | so = socreate(slirp); |
600 | 460fec67 | Jan Kiszka | if (!so) {
|
601 | f0cbd3ec | bellard | return NULL; |
602 | f0cbd3ec | bellard | } |
603 | 5fafdf24 | ths | |
604 | f0cbd3ec | bellard | /* Don't tcp_attach... we don't need so_snd nor so_rcv */
|
605 | f0cbd3ec | bellard | if ((so->so_tcpcb = tcp_newtcpcb(so)) == NULL) { |
606 | f0cbd3ec | bellard | free(so); |
607 | f0cbd3ec | bellard | return NULL; |
608 | f0cbd3ec | bellard | } |
609 | 460fec67 | Jan Kiszka | insque(so, &slirp->tcb); |
610 | 5fafdf24 | ths | |
611 | 5fafdf24 | ths | /*
|
612 | f0cbd3ec | bellard | * SS_FACCEPTONCE sockets must time out.
|
613 | f0cbd3ec | bellard | */
|
614 | f0cbd3ec | bellard | if (flags & SS_FACCEPTONCE)
|
615 | f0cbd3ec | bellard | so->so_tcpcb->t_timer[TCPT_KEEP] = TCPTV_KEEP_INIT*2;
|
616 | 5fafdf24 | ths | |
617 | f932b6ce | Jan Kiszka | so->so_state &= SS_PERSISTENT_MASK; |
618 | f932b6ce | Jan Kiszka | so->so_state |= (SS_FACCEPTCONN | flags); |
619 | f0cbd3ec | bellard | so->so_lport = lport; /* Kept in network format */
|
620 | f0cbd3ec | bellard | so->so_laddr.s_addr = laddr; /* Ditto */
|
621 | 5fafdf24 | ths | |
622 | f0cbd3ec | bellard | addr.sin_family = AF_INET; |
623 | 3c6a0580 | Jan Kiszka | addr.sin_addr.s_addr = haddr; |
624 | 3c6a0580 | Jan Kiszka | addr.sin_port = hport; |
625 | 5fafdf24 | ths | |
626 | 40ff6d7e | Kevin Wolf | if (((s = qemu_socket(AF_INET,SOCK_STREAM,0)) < 0) || |
627 | b55669bf | pbrook | (setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&opt,sizeof(int)) < 0) || |
628 | f0cbd3ec | bellard | (bind(s,(struct sockaddr *)&addr, sizeof(addr)) < 0) || |
629 | f0cbd3ec | bellard | (listen(s,1) < 0)) { |
630 | f0cbd3ec | bellard | int tmperrno = errno; /* Don't clobber the real reason we failed */ |
631 | 3b46e624 | ths | |
632 | f0cbd3ec | bellard | close(s); |
633 | f0cbd3ec | bellard | sofree(so); |
634 | f0cbd3ec | bellard | /* Restore the real errno */
|
635 | 02d2c54c | bellard | #ifdef _WIN32
|
636 | 02d2c54c | bellard | WSASetLastError(tmperrno); |
637 | 02d2c54c | bellard | #else
|
638 | f0cbd3ec | bellard | errno = tmperrno; |
639 | 02d2c54c | bellard | #endif
|
640 | f0cbd3ec | bellard | return NULL; |
641 | f0cbd3ec | bellard | } |
642 | f0cbd3ec | bellard | setsockopt(s,SOL_SOCKET,SO_OOBINLINE,(char *)&opt,sizeof(int)); |
643 | 5fafdf24 | ths | |
644 | f0cbd3ec | bellard | getsockname(s,(struct sockaddr *)&addr,&addrlen);
|
645 | f0cbd3ec | bellard | so->so_fport = addr.sin_port; |
646 | f0cbd3ec | bellard | if (addr.sin_addr.s_addr == 0 || addr.sin_addr.s_addr == loopback_addr.s_addr) |
647 | 460fec67 | Jan Kiszka | so->so_faddr = slirp->vhost_addr; |
648 | f0cbd3ec | bellard | else
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649 | f0cbd3ec | bellard | so->so_faddr = addr.sin_addr; |
650 | f0cbd3ec | bellard | |
651 | f0cbd3ec | bellard | so->s = s; |
652 | f0cbd3ec | bellard | return so;
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653 | f0cbd3ec | bellard | } |
654 | f0cbd3ec | bellard | |
655 | f0cbd3ec | bellard | /*
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656 | f0cbd3ec | bellard | * Various session state calls
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657 | f0cbd3ec | bellard | * XXX Should be #define's
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658 | f0cbd3ec | bellard | * The socket state stuff needs work, these often get call 2 or 3
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659 | f0cbd3ec | bellard | * times each when only 1 was needed
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660 | f0cbd3ec | bellard | */
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661 | f0cbd3ec | bellard | void
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662 | 511d2b14 | blueswir1 | soisfconnecting(struct socket *so)
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663 | f0cbd3ec | bellard | { |
664 | f0cbd3ec | bellard | so->so_state &= ~(SS_NOFDREF|SS_ISFCONNECTED|SS_FCANTRCVMORE| |
665 | f0cbd3ec | bellard | SS_FCANTSENDMORE|SS_FWDRAIN); |
666 | f0cbd3ec | bellard | so->so_state |= SS_ISFCONNECTING; /* Clobber other states */
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667 | f0cbd3ec | bellard | } |
668 | f0cbd3ec | bellard | |
669 | f0cbd3ec | bellard | void
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670 | 511d2b14 | blueswir1 | soisfconnected(struct socket *so)
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671 | f0cbd3ec | bellard | { |
672 | f0cbd3ec | bellard | so->so_state &= ~(SS_ISFCONNECTING|SS_FWDRAIN|SS_NOFDREF); |
673 | f0cbd3ec | bellard | so->so_state |= SS_ISFCONNECTED; /* Clobber other states */
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674 | f0cbd3ec | bellard | } |
675 | f0cbd3ec | bellard | |
676 | 9634d903 | blueswir1 | static void |
677 | 9634d903 | blueswir1 | sofcantrcvmore(struct socket *so)
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678 | f0cbd3ec | bellard | { |
679 | f0cbd3ec | bellard | if ((so->so_state & SS_NOFDREF) == 0) { |
680 | f0cbd3ec | bellard | shutdown(so->s,0);
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681 | 02d2c54c | bellard | if(global_writefds) {
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682 | 02d2c54c | bellard | FD_CLR(so->s,global_writefds); |
683 | 02d2c54c | bellard | } |
684 | f0cbd3ec | bellard | } |
685 | f0cbd3ec | bellard | so->so_state &= ~(SS_ISFCONNECTING); |
686 | f932b6ce | Jan Kiszka | if (so->so_state & SS_FCANTSENDMORE) {
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687 | f932b6ce | Jan Kiszka | so->so_state &= SS_PERSISTENT_MASK; |
688 | f932b6ce | Jan Kiszka | so->so_state |= SS_NOFDREF; /* Don't select it */
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689 | f932b6ce | Jan Kiszka | } else {
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690 | f0cbd3ec | bellard | so->so_state |= SS_FCANTRCVMORE; |
691 | f932b6ce | Jan Kiszka | } |
692 | f0cbd3ec | bellard | } |
693 | f0cbd3ec | bellard | |
694 | 9634d903 | blueswir1 | static void |
695 | 9634d903 | blueswir1 | sofcantsendmore(struct socket *so)
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696 | f0cbd3ec | bellard | { |
697 | f0cbd3ec | bellard | if ((so->so_state & SS_NOFDREF) == 0) { |
698 | 02d2c54c | bellard | shutdown(so->s,1); /* send FIN to fhost */ |
699 | 02d2c54c | bellard | if (global_readfds) {
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700 | 02d2c54c | bellard | FD_CLR(so->s,global_readfds); |
701 | 02d2c54c | bellard | } |
702 | 02d2c54c | bellard | if (global_xfds) {
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703 | 02d2c54c | bellard | FD_CLR(so->s,global_xfds); |
704 | 02d2c54c | bellard | } |
705 | f0cbd3ec | bellard | } |
706 | f0cbd3ec | bellard | so->so_state &= ~(SS_ISFCONNECTING); |
707 | f932b6ce | Jan Kiszka | if (so->so_state & SS_FCANTRCVMORE) {
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708 | f932b6ce | Jan Kiszka | so->so_state &= SS_PERSISTENT_MASK; |
709 | f932b6ce | Jan Kiszka | so->so_state |= SS_NOFDREF; /* as above */
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710 | f932b6ce | Jan Kiszka | } else {
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711 | f0cbd3ec | bellard | so->so_state |= SS_FCANTSENDMORE; |
712 | f932b6ce | Jan Kiszka | } |
713 | f0cbd3ec | bellard | } |
714 | f0cbd3ec | bellard | |
715 | f0cbd3ec | bellard | /*
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716 | f0cbd3ec | bellard | * Set write drain mode
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717 | f0cbd3ec | bellard | * Set CANTSENDMORE once all data has been write()n
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718 | f0cbd3ec | bellard | */
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719 | f0cbd3ec | bellard | void
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720 | 511d2b14 | blueswir1 | sofwdrain(struct socket *so)
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721 | f0cbd3ec | bellard | { |
722 | f0cbd3ec | bellard | if (so->so_rcv.sb_cc)
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723 | f0cbd3ec | bellard | so->so_state |= SS_FWDRAIN; |
724 | f0cbd3ec | bellard | else
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725 | f0cbd3ec | bellard | sofcantsendmore(so); |
726 | f0cbd3ec | bellard | } |