Mercurial > dropbear

annotate netio.c @ 1881:d39cfedaf015

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
extract pubkey_info when seuccesfully auth with a key and free it in the cleanup function
author HansH111 <hans@atbas.org>
date Sun, 13 Mar 2022 17:38:13 +0000
parents 5001e9c5641f
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1032
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1 #include "netio.h"
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
2 #include "list.h"
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
3 #include "dbutil.h"
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
4 #include "session.h"
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
5 #include "debug.h"
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
6
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
7 struct dropbear_progress_connection {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
8 struct addrinfo *res;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
9 struct addrinfo *res_iter;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
10
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
11 char *remotehost, *remoteport; /* For error reporting */
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
12
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
13 connect_callback cb;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
14 void *cb_data;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
15
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
16 struct Queue *writequeue; /* A queue of encrypted packets to send with TCP fastopen,
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
17 or NULL. */
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
18
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
19 int sock;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
20
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
21 char* errstring;
1466
f787f60f8e45 bind to port as well with -b
Matt Johnston <matt@ucc.asn.au>
parents: 1465
diff changeset
22 char *bind_address, *bind_port;
1859
1d86a58fb52d Leave non-interactive at default QoS class
Matt Johnston <matt@ucc.asn.au>
parents: 1857
diff changeset
23 enum dropbear_prio prio;
1032
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
24 };
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
25
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
26 /* Deallocate a progress connection. Removes from the pending list if iter!=NULL.
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
27 Does not close sockets */
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
28 static void remove_connect(struct dropbear_progress_connection *c, m_list_elem *iter) {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
29 if (c->res) {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
30 freeaddrinfo(c->res);
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
31 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
32 m_free(c->remotehost);
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
33 m_free(c->remoteport);
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
34 m_free(c->errstring);
1466
f787f60f8e45 bind to port as well with -b
Matt Johnston <matt@ucc.asn.au>
parents: 1465
diff changeset
35 m_free(c->bind_address);
f787f60f8e45 bind to port as well with -b
Matt Johnston <matt@ucc.asn.au>
parents: 1465
diff changeset
36 m_free(c->bind_port);
1032
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
37 m_free(c);
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
38
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
39 if (iter) {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
40 list_remove(iter);
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
41 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
42 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
43
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
44 static void cancel_callback(int result, int sock, void* UNUSED(data), const char* UNUSED(errstring)) {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
45 if (result == DROPBEAR_SUCCESS)
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
46 {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
47 m_close(sock);
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
48 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
49 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
50
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
51 void cancel_connect(struct dropbear_progress_connection *c) {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
52 c->cb = cancel_callback;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
53 c->cb_data = NULL;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
54 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
55
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
56 static void connect_try_next(struct dropbear_progress_connection *c) {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
57 struct addrinfo *r;
1466
f787f60f8e45 bind to port as well with -b
Matt Johnston <matt@ucc.asn.au>
parents: 1465
diff changeset
58 int err;
1033
ca71904cf3ee Fixes for backwards compatibility
Matt Johnston <matt@ucc.asn.au>
parents: 1032
diff changeset
59 int res = 0;
ca71904cf3ee Fixes for backwards compatibility
Matt Johnston <matt@ucc.asn.au>
parents: 1032
diff changeset
60 int fastopen = 0;
1295
750ec4ec4cbe Convert #ifdef to #if, other build changes
Matt Johnston <matt@ucc.asn.au>
parents: 1152
diff changeset
61 #if DROPBEAR_CLIENT_TCP_FAST_OPEN
1035
8ed1d37e75a6 get rid of some unnecessary code
Matt Johnston <matt@ucc.asn.au>
parents: 1034
diff changeset
62 struct msghdr message;
1033
ca71904cf3ee Fixes for backwards compatibility
Matt Johnston <matt@ucc.asn.au>
parents: 1032
diff changeset
63 #endif
1032
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
64
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
65 for (r = c->res_iter; r; r = r->ai_next)
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
66 {
1067
ce21d0bfaf98 dropbear_assert() rather than assert()
Matt Johnston <matt@ucc.asn.au>
parents: 1066
diff changeset
67 dropbear_assert(c->sock == -1);
1032
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
68
1309
3b624ad2dc5e make sure socket is of the right domain
Matt Johnston <matt@ucc.asn.au>
parents: 1152
diff changeset
69 c->sock = socket(r->ai_family, r->ai_socktype, r->ai_protocol);
1032
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
70 if (c->sock < 0) {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
71 continue;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
72 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
73
1466
f787f60f8e45 bind to port as well with -b
Matt Johnston <matt@ucc.asn.au>
parents: 1465
diff changeset
74 if (c->bind_address || c->bind_port) {
f787f60f8e45 bind to port as well with -b
Matt Johnston <matt@ucc.asn.au>
parents: 1465
diff changeset
75 /* bind to a source port/address */
f787f60f8e45 bind to port as well with -b
Matt Johnston <matt@ucc.asn.au>
parents: 1465
diff changeset
76 struct addrinfo hints;
f787f60f8e45 bind to port as well with -b
Matt Johnston <matt@ucc.asn.au>
parents: 1465
diff changeset
77 struct addrinfo *bindaddr = NULL;
f787f60f8e45 bind to port as well with -b
Matt Johnston <matt@ucc.asn.au>
parents: 1465
diff changeset
78 memset(&hints, 0, sizeof(hints));
f787f60f8e45 bind to port as well with -b
Matt Johnston <matt@ucc.asn.au>
parents: 1465
diff changeset
79 hints.ai_socktype = SOCK_STREAM;
f787f60f8e45 bind to port as well with -b
Matt Johnston <matt@ucc.asn.au>
parents: 1465
diff changeset
80 hints.ai_family = r->ai_family;
f787f60f8e45 bind to port as well with -b
Matt Johnston <matt@ucc.asn.au>
parents: 1465
diff changeset
81 hints.ai_flags = AI_PASSIVE;
f787f60f8e45 bind to port as well with -b
Matt Johnston <matt@ucc.asn.au>
parents: 1465
diff changeset
82
f787f60f8e45 bind to port as well with -b
Matt Johnston <matt@ucc.asn.au>
parents: 1465
diff changeset
83 err = getaddrinfo(c->bind_address, c->bind_port, &hints, &bindaddr);
f787f60f8e45 bind to port as well with -b
Matt Johnston <matt@ucc.asn.au>
parents: 1465
diff changeset
84 if (err) {
f787f60f8e45 bind to port as well with -b
Matt Johnston <matt@ucc.asn.au>
parents: 1465
diff changeset
85 int len = 100 + strlen(gai_strerror(err));
f787f60f8e45 bind to port as well with -b
Matt Johnston <matt@ucc.asn.au>
parents: 1465
diff changeset
86 m_free(c->errstring);
f787f60f8e45 bind to port as well with -b
Matt Johnston <matt@ucc.asn.au>
parents: 1465
diff changeset
87 c->errstring = (char*)m_malloc(len);
f787f60f8e45 bind to port as well with -b
Matt Johnston <matt@ucc.asn.au>
parents: 1465
diff changeset
88 snprintf(c->errstring, len, "Error resolving bind address '%s' (port %s). %s",
f787f60f8e45 bind to port as well with -b
Matt Johnston <matt@ucc.asn.au>
parents: 1465
diff changeset
89 c->bind_address, c->bind_port, gai_strerror(err));
f787f60f8e45 bind to port as well with -b
Matt Johnston <matt@ucc.asn.au>
parents: 1465
diff changeset
90 TRACE(("Error resolving bind: %s", gai_strerror(err)))
f787f60f8e45 bind to port as well with -b
Matt Johnston <matt@ucc.asn.au>
parents: 1465
diff changeset
91 close(c->sock);
f787f60f8e45 bind to port as well with -b
Matt Johnston <matt@ucc.asn.au>
parents: 1465
diff changeset
92 c->sock = -1;
f787f60f8e45 bind to port as well with -b
Matt Johnston <matt@ucc.asn.au>
parents: 1465
diff changeset
93 continue;
f787f60f8e45 bind to port as well with -b
Matt Johnston <matt@ucc.asn.au>
parents: 1465
diff changeset
94 }
f787f60f8e45 bind to port as well with -b
Matt Johnston <matt@ucc.asn.au>
parents: 1465
diff changeset
95 res = bind(c->sock, bindaddr->ai_addr, bindaddr->ai_addrlen);
f787f60f8e45 bind to port as well with -b
Matt Johnston <matt@ucc.asn.au>
parents: 1465
diff changeset
96 freeaddrinfo(bindaddr);
f787f60f8e45 bind to port as well with -b
Matt Johnston <matt@ucc.asn.au>
parents: 1465
diff changeset
97 bindaddr = NULL;
f787f60f8e45 bind to port as well with -b
Matt Johnston <matt@ucc.asn.au>
parents: 1465
diff changeset
98 if (res < 0) {
1465
f7a53832501d cli_bind_address_connect
houseofkodai <karthik@houseofkodai.in>
parents: 1464
diff changeset
99 /* failure */
1466
f787f60f8e45 bind to port as well with -b
Matt Johnston <matt@ucc.asn.au>
parents: 1465
diff changeset
100 int keep_errno = errno;
f787f60f8e45 bind to port as well with -b
Matt Johnston <matt@ucc.asn.au>
parents: 1465
diff changeset
101 int len = 300;
1465
f7a53832501d cli_bind_address_connect
houseofkodai <karthik@houseofkodai.in>
parents: 1464
diff changeset
102 m_free(c->errstring);
1466
f787f60f8e45 bind to port as well with -b
Matt Johnston <matt@ucc.asn.au>
parents: 1465
diff changeset
103 c->errstring = m_malloc(len);
f787f60f8e45 bind to port as well with -b
Matt Johnston <matt@ucc.asn.au>
parents: 1465
diff changeset
104 snprintf(c->errstring, len, "Error binding local address '%s' (port %s). %s",
f787f60f8e45 bind to port as well with -b
Matt Johnston <matt@ucc.asn.au>
parents: 1465
diff changeset
105 c->bind_address, c->bind_port, strerror(keep_errno));
1465
f7a53832501d cli_bind_address_connect
houseofkodai <karthik@houseofkodai.in>
parents: 1464
diff changeset
106 close(c->sock);
f7a53832501d cli_bind_address_connect
houseofkodai <karthik@houseofkodai.in>
parents: 1464
diff changeset
107 c->sock = -1;
f7a53832501d cli_bind_address_connect
houseofkodai <karthik@houseofkodai.in>
parents: 1464
diff changeset
108 continue;
f7a53832501d cli_bind_address_connect
houseofkodai <karthik@houseofkodai.in>
parents: 1464
diff changeset
109 }
f7a53832501d cli_bind_address_connect
houseofkodai <karthik@houseofkodai.in>
parents: 1464
diff changeset
110 }
f7a53832501d cli_bind_address_connect
houseofkodai <karthik@houseofkodai.in>
parents: 1464
diff changeset
111
1032
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
112 ses.maxfd = MAX(ses.maxfd, c->sock);
1035
8ed1d37e75a6 get rid of some unnecessary code
Matt Johnston <matt@ucc.asn.au>
parents: 1034
diff changeset
113 set_sock_nodelay(c->sock);
1859
1d86a58fb52d Leave non-interactive at default QoS class
Matt Johnston <matt@ucc.asn.au>
parents: 1857
diff changeset
114 set_sock_priority(c->sock, c->prio);
1032
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
115 setnonblocking(c->sock);
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
116
1295
750ec4ec4cbe Convert #ifdef to #if, other build changes
Matt Johnston <matt@ucc.asn.au>
parents: 1152
diff changeset
117 #if DROPBEAR_CLIENT_TCP_FAST_OPEN
1033
ca71904cf3ee Fixes for backwards compatibility
Matt Johnston <matt@ucc.asn.au>
parents: 1032
diff changeset
118 fastopen = (c->writequeue != NULL);
1032
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
119
1084
2265d7ebfdeb separate client/server fastopen options
Matt Johnston <matt@ucc.asn.au>
parents: 1078
diff changeset
120 if (fastopen) {
2265d7ebfdeb separate client/server fastopen options
Matt Johnston <matt@ucc.asn.au>
parents: 1078
diff changeset
121 memset(&message, 0x0, sizeof(message));
2265d7ebfdeb separate client/server fastopen options
Matt Johnston <matt@ucc.asn.au>
parents: 1078
diff changeset
122 message.msg_name = r->ai_addr;
2265d7ebfdeb separate client/server fastopen options
Matt Johnston <matt@ucc.asn.au>
parents: 1078
diff changeset
123 message.msg_namelen = r->ai_addrlen;
1072
686cd3e8e13e avoid malloc for iovec
Matt Johnston <matt@ucc.asn.au>
parents: 1067
diff changeset
124 /* 6 is arbitrary, enough to hold initial packets */
1094
c45d65392c1a Fix pointer differ in signess warnings [-Werror=pointer-sign]
Gaël PORTAY <gael.portay@gmail.com>
parents: 1078
diff changeset
125 unsigned int iovlen = 6; /* Linux msg_iovlen is a size_t */
1076
d92597ef089e fastopen code was totally broken
Matt Johnston <matt@ucc.asn.au>
parents: 1073
diff changeset
126 struct iovec iov[6];
1072
686cd3e8e13e avoid malloc for iovec
Matt Johnston <matt@ucc.asn.au>
parents: 1067
diff changeset
127 packet_queue_to_iovec(c->writequeue, iov, &iovlen);
1076
d92597ef089e fastopen code was totally broken
Matt Johnston <matt@ucc.asn.au>
parents: 1073
diff changeset
128 message.msg_iov = iov;
1033
ca71904cf3ee Fixes for backwards compatibility
Matt Johnston <matt@ucc.asn.au>
parents: 1032
diff changeset
129 message.msg_iovlen = iovlen;
ca71904cf3ee Fixes for backwards compatibility
Matt Johnston <matt@ucc.asn.au>
parents: 1032
diff changeset
130 res = sendmsg(c->sock, &message, MSG_FASTOPEN);
1084
2265d7ebfdeb separate client/server fastopen options
Matt Johnston <matt@ucc.asn.au>
parents: 1078
diff changeset
131 /* Returns EINPROGRESS if FASTOPEN wasn't available */
2265d7ebfdeb separate client/server fastopen options
Matt Johnston <matt@ucc.asn.au>
parents: 1078
diff changeset
132 if (res < 0) {
2265d7ebfdeb separate client/server fastopen options
Matt Johnston <matt@ucc.asn.au>
parents: 1078
diff changeset
133 if (errno != EINPROGRESS) {
2265d7ebfdeb separate client/server fastopen options
Matt Johnston <matt@ucc.asn.au>
parents: 1078
diff changeset
134 m_free(c->errstring);
2265d7ebfdeb separate client/server fastopen options
Matt Johnston <matt@ucc.asn.au>
parents: 1078
diff changeset
135 c->errstring = m_strdup(strerror(errno));
2265d7ebfdeb separate client/server fastopen options
Matt Johnston <matt@ucc.asn.au>
parents: 1078
diff changeset
136 /* Not entirely sure which kind of errors are normal - 2.6.32 seems to
2265d7ebfdeb separate client/server fastopen options
Matt Johnston <matt@ucc.asn.au>
parents: 1078
diff changeset
137 return EPIPE for any (nonblocking?) sendmsg(). just fall back */
2265d7ebfdeb separate client/server fastopen options
Matt Johnston <matt@ucc.asn.au>
parents: 1078
diff changeset
138 TRACE(("sendmsg tcp_fastopen failed, falling back. %s", strerror(errno)));
2265d7ebfdeb separate client/server fastopen options
Matt Johnston <matt@ucc.asn.au>
parents: 1078
diff changeset
139 /* No kernel MSG_FASTOPEN support. Fall back below */
2265d7ebfdeb separate client/server fastopen options
Matt Johnston <matt@ucc.asn.au>
parents: 1078
diff changeset
140 fastopen = 0;
2265d7ebfdeb separate client/server fastopen options
Matt Johnston <matt@ucc.asn.au>
parents: 1078
diff changeset
141 /* Set to NULL to avoid trying again */
2265d7ebfdeb separate client/server fastopen options
Matt Johnston <matt@ucc.asn.au>
parents: 1078
diff changeset
142 c->writequeue = NULL;
2265d7ebfdeb separate client/server fastopen options
Matt Johnston <matt@ucc.asn.au>
parents: 1078
diff changeset
143 }
2265d7ebfdeb separate client/server fastopen options
Matt Johnston <matt@ucc.asn.au>
parents: 1078
diff changeset
144 } else {
2265d7ebfdeb separate client/server fastopen options
Matt Johnston <matt@ucc.asn.au>
parents: 1078
diff changeset
145 packet_queue_consume(c->writequeue, res);
1032
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
146 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
147 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
148 #endif
1033
ca71904cf3ee Fixes for backwards compatibility
Matt Johnston <matt@ucc.asn.au>
parents: 1032
diff changeset
149
ca71904cf3ee Fixes for backwards compatibility
Matt Johnston <matt@ucc.asn.au>
parents: 1032
diff changeset
150 /* Normal connect(), used as fallback for TCP fastopen too */
ca71904cf3ee Fixes for backwards compatibility
Matt Johnston <matt@ucc.asn.au>
parents: 1032
diff changeset
151 if (!fastopen) {
ca71904cf3ee Fixes for backwards compatibility
Matt Johnston <matt@ucc.asn.au>
parents: 1032
diff changeset
152 res = connect(c->sock, r->ai_addr, r->ai_addrlen);
ca71904cf3ee Fixes for backwards compatibility
Matt Johnston <matt@ucc.asn.au>
parents: 1032
diff changeset
153 }
ca71904cf3ee Fixes for backwards compatibility
Matt Johnston <matt@ucc.asn.au>
parents: 1032
diff changeset
154
ca71904cf3ee Fixes for backwards compatibility
Matt Johnston <matt@ucc.asn.au>
parents: 1032
diff changeset
155 if (res < 0 && errno != EINPROGRESS) {
1035
8ed1d37e75a6 get rid of some unnecessary code
Matt Johnston <matt@ucc.asn.au>
parents: 1034
diff changeset
156 /* failure */
1065
23103e1e9548 Fix error handling for dbclient async connect
Matt Johnston <matt@ucc.asn.au>
parents: 1053
diff changeset
157 m_free(c->errstring);
23103e1e9548 Fix error handling for dbclient async connect
Matt Johnston <matt@ucc.asn.au>
parents: 1053
diff changeset
158 c->errstring = m_strdup(strerror(errno));
1033
ca71904cf3ee Fixes for backwards compatibility
Matt Johnston <matt@ucc.asn.au>
parents: 1032
diff changeset
159 close(c->sock);
ca71904cf3ee Fixes for backwards compatibility
Matt Johnston <matt@ucc.asn.au>
parents: 1032
diff changeset
160 c->sock = -1;
ca71904cf3ee Fixes for backwards compatibility
Matt Johnston <matt@ucc.asn.au>
parents: 1032
diff changeset
161 continue;
ca71904cf3ee Fixes for backwards compatibility
Matt Johnston <matt@ucc.asn.au>
parents: 1032
diff changeset
162 } else {
1035
8ed1d37e75a6 get rid of some unnecessary code
Matt Johnston <matt@ucc.asn.au>
parents: 1034
diff changeset
163 /* new connection was successful, wait for it to complete */
1033
ca71904cf3ee Fixes for backwards compatibility
Matt Johnston <matt@ucc.asn.au>
parents: 1032
diff changeset
164 break;
ca71904cf3ee Fixes for backwards compatibility
Matt Johnston <matt@ucc.asn.au>
parents: 1032
diff changeset
165 }
1032
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
166 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
167
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
168 if (r) {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
169 c->res_iter = r->ai_next;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
170 } else {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
171 c->res_iter = NULL;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
172 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
173 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
174
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
175 /* Connect via TCP to a host. */
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
176 struct dropbear_progress_connection *connect_remote(const char* remotehost, const char* remoteport,
1859
1d86a58fb52d Leave non-interactive at default QoS class
Matt Johnston <matt@ucc.asn.au>
parents: 1857
diff changeset
177 connect_callback cb, void* cb_data,
1d86a58fb52d Leave non-interactive at default QoS class
Matt Johnston <matt@ucc.asn.au>
parents: 1857
diff changeset
178 const char* bind_address, const char* bind_port, enum dropbear_prio prio)
1032
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
179 {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
180 struct dropbear_progress_connection *c = NULL;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
181 int err;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
182 struct addrinfo hints;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
183
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
184 c = m_malloc(sizeof(*c));
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
185 c->remotehost = m_strdup(remotehost);
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
186 c->remoteport = m_strdup(remoteport);
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
187 c->sock = -1;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
188 c->cb = cb;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
189 c->cb_data = cb_data;
1859
1d86a58fb52d Leave non-interactive at default QoS class
Matt Johnston <matt@ucc.asn.au>
parents: 1857
diff changeset
190 c->prio = prio;
1032
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
191
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
192 list_append(&ses.conn_pending, c);
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
193
1801
4983a6bc1f51 fuzz: fix crash in newtcpdirect(), don't close the channel too early
Matt Johnston <matt@ucc.asn.au>
parents: 1797
diff changeset
194 #if DROPBEAR_FUZZ
4983a6bc1f51 fuzz: fix crash in newtcpdirect(), don't close the channel too early
Matt Johnston <matt@ucc.asn.au>
parents: 1797
diff changeset
195 if (fuzz.fuzzing) {
4983a6bc1f51 fuzz: fix crash in newtcpdirect(), don't close the channel too early
Matt Johnston <matt@ucc.asn.au>
parents: 1797
diff changeset
196 c->errstring = m_strdup("fuzzing connect_remote always fails");
4983a6bc1f51 fuzz: fix crash in newtcpdirect(), don't close the channel too early
Matt Johnston <matt@ucc.asn.au>
parents: 1797
diff changeset
197 return c;
4983a6bc1f51 fuzz: fix crash in newtcpdirect(), don't close the channel too early
Matt Johnston <matt@ucc.asn.au>
parents: 1797
diff changeset
198 }
4983a6bc1f51 fuzz: fix crash in newtcpdirect(), don't close the channel too early
Matt Johnston <matt@ucc.asn.au>
parents: 1797
diff changeset
199 #endif
4983a6bc1f51 fuzz: fix crash in newtcpdirect(), don't close the channel too early
Matt Johnston <matt@ucc.asn.au>
parents: 1797
diff changeset
200
1032
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
201 memset(&hints, 0, sizeof(hints));
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
202 hints.ai_socktype = SOCK_STREAM;
1078
b3b772646974 Should be AF_UNSPEC not PF_UNSPEC
Matt Johnston <matt@ucc.asn.au>
parents: 1076
diff changeset
203 hints.ai_family = AF_UNSPEC;
1032
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
204
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
205 err = getaddrinfo(remotehost, remoteport, &hints, &c->res);
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
206 if (err) {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
207 int len;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
208 len = 100 + strlen(gai_strerror(err));
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
209 c->errstring = (char*)m_malloc(len);
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
210 snprintf(c->errstring, len, "Error resolving '%s' port '%s'. %s",
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
211 remotehost, remoteport, gai_strerror(err));
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
212 TRACE(("Error resolving: %s", gai_strerror(err)))
1053
fd3712d1ff7f Better failure handling
Matt Johnston <matt@ucc.asn.au>
parents: 1050
diff changeset
213 } else {
fd3712d1ff7f Better failure handling
Matt Johnston <matt@ucc.asn.au>
parents: 1050
diff changeset
214 c->res_iter = c->res;
1032
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
215 }
1465
f7a53832501d cli_bind_address_connect
houseofkodai <karthik@houseofkodai.in>
parents: 1464
diff changeset
216
1466
f787f60f8e45 bind to port as well with -b
Matt Johnston <matt@ucc.asn.au>
parents: 1465
diff changeset
217 if (bind_address) {
f787f60f8e45 bind to port as well with -b
Matt Johnston <matt@ucc.asn.au>
parents: 1465
diff changeset
218 c->bind_address = m_strdup(bind_address);
f787f60f8e45 bind to port as well with -b
Matt Johnston <matt@ucc.asn.au>
parents: 1465
diff changeset
219 }
f787f60f8e45 bind to port as well with -b
Matt Johnston <matt@ucc.asn.au>
parents: 1465
diff changeset
220 if (bind_port) {
f787f60f8e45 bind to port as well with -b
Matt Johnston <matt@ucc.asn.au>
parents: 1465
diff changeset
221 c->bind_port = m_strdup(bind_port);
1465
f7a53832501d cli_bind_address_connect
houseofkodai <karthik@houseofkodai.in>
parents: 1464
diff changeset
222 }
1032
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
223
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
224 return c;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
225 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
226
1050
c2a50c9f509e Add cleanup
Matt Johnston <matt@ucc.asn.au>
parents: 1048
diff changeset
227 void remove_connect_pending() {
c2a50c9f509e Add cleanup
Matt Johnston <matt@ucc.asn.au>
parents: 1048
diff changeset
228 while (ses.conn_pending.first) {
c2a50c9f509e Add cleanup
Matt Johnston <matt@ucc.asn.au>
parents: 1048
diff changeset
229 struct dropbear_progress_connection *c = ses.conn_pending.first->item;
c2a50c9f509e Add cleanup
Matt Johnston <matt@ucc.asn.au>
parents: 1048
diff changeset
230 remove_connect(c, ses.conn_pending.first);
c2a50c9f509e Add cleanup
Matt Johnston <matt@ucc.asn.au>
parents: 1048
diff changeset
231 }
c2a50c9f509e Add cleanup
Matt Johnston <matt@ucc.asn.au>
parents: 1048
diff changeset
232 }
c2a50c9f509e Add cleanup
Matt Johnston <matt@ucc.asn.au>
parents: 1048
diff changeset
233
1032
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
234
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
235 void set_connect_fds(fd_set *writefd) {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
236 m_list_elem *iter;
1152
57d09741d46d avoid invalidated iterator when connection fails
Matt Johnston <matt@ucc.asn.au>
parents: 1136
diff changeset
237 iter = ses.conn_pending.first;
57d09741d46d avoid invalidated iterator when connection fails
Matt Johnston <matt@ucc.asn.au>
parents: 1136
diff changeset
238 while (iter) {
57d09741d46d avoid invalidated iterator when connection fails
Matt Johnston <matt@ucc.asn.au>
parents: 1136
diff changeset
239 m_list_elem *next_iter = iter->next;
1032
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
240 struct dropbear_progress_connection *c = iter->item;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
241 /* Set one going */
1152
57d09741d46d avoid invalidated iterator when connection fails
Matt Johnston <matt@ucc.asn.au>
parents: 1136
diff changeset
242 while (c->res_iter && c->sock < 0) {
1032
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
243 connect_try_next(c);
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
244 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
245 if (c->sock >= 0) {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
246 FD_SET(c->sock, writefd);
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
247 } else {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
248 /* Final failure */
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
249 if (!c->errstring) {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
250 c->errstring = m_strdup("unexpected failure");
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
251 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
252 c->cb(DROPBEAR_FAILURE, -1, c->cb_data, c->errstring);
1152
57d09741d46d avoid invalidated iterator when connection fails
Matt Johnston <matt@ucc.asn.au>
parents: 1136
diff changeset
253 remove_connect(c, iter);
1032
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
254 }
1152
57d09741d46d avoid invalidated iterator when connection fails
Matt Johnston <matt@ucc.asn.au>
parents: 1136
diff changeset
255 iter = next_iter;
1032
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
256 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
257 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
258
1459
06d52bcb8094 Pointer parameter could be declared as pointing to const
Francois Perrad <francois.perrad@gadz.org>
parents: 1426
diff changeset
259 void handle_connect_fds(const fd_set *writefd) {
1032
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
260 m_list_elem *iter;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
261 for (iter = ses.conn_pending.first; iter; iter = iter->next) {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
262 int val;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
263 socklen_t vallen = sizeof(val);
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
264 struct dropbear_progress_connection *c = iter->item;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
265
1053
fd3712d1ff7f Better failure handling
Matt Johnston <matt@ucc.asn.au>
parents: 1050
diff changeset
266 if (c->sock < 0 || !FD_ISSET(c->sock, writefd)) {
1032
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
267 continue;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
268 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
269
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
270 TRACE(("handling %s port %s socket %d", c->remotehost, c->remoteport, c->sock));
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
271
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
272 if (getsockopt(c->sock, SOL_SOCKET, SO_ERROR, &val, &vallen) != 0) {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
273 TRACE(("handle_connect_fds getsockopt(%d) SO_ERROR failed: %s", c->sock, strerror(errno)))
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
274 /* This isn't expected to happen - Unix has surprises though, continue gracefully. */
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
275 m_close(c->sock);
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
276 c->sock = -1;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
277 } else if (val != 0) {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
278 /* Connect failed */
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
279 TRACE(("connect to %s port %s failed.", c->remotehost, c->remoteport))
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
280 m_close(c->sock);
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
281 c->sock = -1;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
282
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
283 m_free(c->errstring);
1066
cce03ea8e6eb strdup strerror
Matt Johnston <matt@ucc.asn.au>
parents: 1065
diff changeset
284 c->errstring = m_strdup(strerror(val));
1032
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
285 } else {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
286 /* New connection has been established */
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
287 c->cb(DROPBEAR_SUCCESS, c->sock, c->cb_data, NULL);
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
288 remove_connect(c, iter);
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
289 TRACE(("leave handle_connect_fds - success"))
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
290 /* Must return here - remove_connect() invalidates iter */
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
291 return;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
292 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
293 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
294 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
295
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
296 void connect_set_writequeue(struct dropbear_progress_connection *c, struct Queue *writequeue) {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
297 c->writequeue = writequeue;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
298 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
299
1459
06d52bcb8094 Pointer parameter could be declared as pointing to const
Francois Perrad <francois.perrad@gadz.org>
parents: 1426
diff changeset
300 void packet_queue_to_iovec(const struct Queue *queue, struct iovec *iov, unsigned int *iov_count) {
1032
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
301 struct Link *l;
1034
107b013e9d9d avoid some warnings
Matt Johnston <matt@ucc.asn.au>
parents: 1033
diff changeset
302 unsigned int i;
1032
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
303 int len;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
304 buffer *writebuf;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
305
1708
58f7ca8ebc82 Set IOV_MAX for IRIX
Kazuo Kuroi <kazuo@irixnet.org>
parents: 1704
diff changeset
306 #ifndef IOV_MAX
58f7ca8ebc82 Set IOV_MAX for IRIX
Kazuo Kuroi <kazuo@irixnet.org>
parents: 1704
diff changeset
307 #if defined(__CYGWIN__) && !defined(UIO_MAXIOV)
1636
35a1e8de3aec cygwin competibility fix (#64)
karel-m <1918753+karel-m@users.noreply.github.com>
parents: 1624
diff changeset
308 #define IOV_MAX 1024
1708
58f7ca8ebc82 Set IOV_MAX for IRIX
Kazuo Kuroi <kazuo@irixnet.org>
parents: 1704
diff changeset
309 #elif defined(__sgi)
58f7ca8ebc82 Set IOV_MAX for IRIX
Kazuo Kuroi <kazuo@irixnet.org>
parents: 1704
diff changeset
310 #define IOV_MAX 512
58f7ca8ebc82 Set IOV_MAX for IRIX
Kazuo Kuroi <kazuo@irixnet.org>
parents: 1704
diff changeset
311 #else
1636
35a1e8de3aec cygwin competibility fix (#64)
karel-m <1918753+karel-m@users.noreply.github.com>
parents: 1624
diff changeset
312 #define IOV_MAX UIO_MAXIOV
1032
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
313 #endif
1708
58f7ca8ebc82 Set IOV_MAX for IRIX
Kazuo Kuroi <kazuo@irixnet.org>
parents: 1704
diff changeset
314 #endif
1032
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
315
1072
686cd3e8e13e avoid malloc for iovec
Matt Johnston <matt@ucc.asn.au>
parents: 1067
diff changeset
316 *iov_count = MIN(MIN(queue->count, IOV_MAX), *iov_count);
1032
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
317
1073
88043f9d40bd Fix when iov queue is large
Matt Johnston <matt@ucc.asn.au>
parents: 1072
diff changeset
318 for (l = queue->head, i = 0; i < *iov_count; l = l->link, i++)
1032
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
319 {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
320 writebuf = (buffer*)l->item;
1577
399d8eb961b5 get rid of unused packet_type in encrypted write queue
Matt Johnston <matt@ucc.asn.au>
parents: 1558
diff changeset
321 len = writebuf->len - writebuf->pos;
1032
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
322 dropbear_assert(len > 0);
1577
399d8eb961b5 get rid of unused packet_type in encrypted write queue
Matt Johnston <matt@ucc.asn.au>
parents: 1558
diff changeset
323 TRACE2(("write_packet writev #%d len %d/%d", i,
399d8eb961b5 get rid of unused packet_type in encrypted write queue
Matt Johnston <matt@ucc.asn.au>
parents: 1558
diff changeset
324 len, writebuf->len))
1032
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
325 iov[i].iov_base = buf_getptr(writebuf, len);
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
326 iov[i].iov_len = len;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
327 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
328 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
329
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
330 void packet_queue_consume(struct Queue *queue, ssize_t written) {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
331 buffer *writebuf;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
332 int len;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
333 while (written > 0) {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
334 writebuf = (buffer*)examine(queue);
1577
399d8eb961b5 get rid of unused packet_type in encrypted write queue
Matt Johnston <matt@ucc.asn.au>
parents: 1558
diff changeset
335 len = writebuf->len - writebuf->pos;
1032
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
336 if (len > written) {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
337 /* partial buffer write */
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
338 buf_incrpos(writebuf, written);
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
339 written = 0;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
340 } else {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
341 written -= len;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
342 dequeue(queue);
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
343 buf_free(writebuf);
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
344 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
345 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
346 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
347
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
348 void set_sock_nodelay(int sock) {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
349 int val;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
350
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
351 /* disable nagle */
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
352 val = 1;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
353 setsockopt(sock, IPPROTO_TCP, TCP_NODELAY, (void*)&val, sizeof(val));
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
354 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
355
1295
750ec4ec4cbe Convert #ifdef to #if, other build changes
Matt Johnston <matt@ucc.asn.au>
parents: 1152
diff changeset
356 #if DROPBEAR_SERVER_TCP_FAST_OPEN
1032
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
357 void set_listen_fast_open(int sock) {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
358 int qlen = MAX(MAX_UNAUTH_PER_IP, 5);
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
359 if (setsockopt(sock, SOL_TCP, TCP_FASTOPEN, &qlen, sizeof(qlen)) != 0) {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
360 TRACE(("set_listen_fast_open failed for socket %d: %s", sock, strerror(errno)))
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
361 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
362 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
363
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
364 #endif
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
365
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
366 void set_sock_priority(int sock, enum dropbear_prio prio) {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
367
1034
107b013e9d9d avoid some warnings
Matt Johnston <matt@ucc.asn.au>
parents: 1033
diff changeset
368 int rc;
1857
6022df862942 Use DSCP for IP QoS traffic classes
Matt Johnston <matt@ucc.asn.au>
parents: 1801
diff changeset
369 int val;
1034
107b013e9d9d avoid some warnings
Matt Johnston <matt@ucc.asn.au>
parents: 1033
diff changeset
370
1558
2f64cb3d3007 - #if not #ifdef for DROPBEAR_FUZZ
Matt Johnston <matt@ucc.asn.au>
parents: 1511
diff changeset
371 #if DROPBEAR_FUZZ
1383
f03cfe9c76ac Disable setnonblocking(), get_socket_address(), set_sock_priority()
Matt Johnston <matt@ucc.asn.au>
parents: 1357
diff changeset
372 if (fuzz.fuzzing) {
f03cfe9c76ac Disable setnonblocking(), get_socket_address(), set_sock_priority()
Matt Johnston <matt@ucc.asn.au>
parents: 1357
diff changeset
373 TRACE(("fuzzing skips set_sock_prio"))
f03cfe9c76ac Disable setnonblocking(), get_socket_address(), set_sock_priority()
Matt Johnston <matt@ucc.asn.au>
parents: 1357
diff changeset
374 return;
f03cfe9c76ac Disable setnonblocking(), get_socket_address(), set_sock_priority()
Matt Johnston <matt@ucc.asn.au>
parents: 1357
diff changeset
375 }
f03cfe9c76ac Disable setnonblocking(), get_socket_address(), set_sock_priority()
Matt Johnston <matt@ucc.asn.au>
parents: 1357
diff changeset
376 #endif
1032
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
377 /* Don't log ENOTSOCK errors so that this can harmlessly be called
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
378 * on a client '-J' proxy pipe */
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
379
1858
ed3326f21888 Test for IP_TOS and hardcode DSCP values
Matt Johnston <matt@ucc.asn.au>
parents: 1857
diff changeset
380 #ifdef IP_TOS
1857
6022df862942 Use DSCP for IP QoS traffic classes
Matt Johnston <matt@ucc.asn.au>
parents: 1801
diff changeset
381 /* Set the DSCP field for outbound IP packet priority.
6022df862942 Use DSCP for IP QoS traffic classes
Matt Johnston <matt@ucc.asn.au>
parents: 1801
diff changeset
382 rfc4594 has some guidance to meanings.
6022df862942 Use DSCP for IP QoS traffic classes
Matt Johnston <matt@ucc.asn.au>
parents: 1801
diff changeset
383
1859
1d86a58fb52d Leave non-interactive at default QoS class
Matt Johnston <matt@ucc.asn.au>
parents: 1857
diff changeset
384 We set AF21 as "Low-Latency" class for interactive (tty session,
1d86a58fb52d Leave non-interactive at default QoS class
Matt Johnston <matt@ucc.asn.au>
parents: 1857
diff changeset
385 also handshake/setup packets). Other traffic is left at the default.
1857
6022df862942 Use DSCP for IP QoS traffic classes
Matt Johnston <matt@ucc.asn.au>
parents: 1801
diff changeset
386
6022df862942 Use DSCP for IP QoS traffic classes
Matt Johnston <matt@ucc.asn.au>
parents: 1801
diff changeset
387 OpenSSH at present uses AF21/CS1, rationale
6022df862942 Use DSCP for IP QoS traffic classes
Matt Johnston <matt@ucc.asn.au>
parents: 1801
diff changeset
388 https://cvsweb.openbsd.org/src/usr.bin/ssh/readconf.c#rev1.284
6022df862942 Use DSCP for IP QoS traffic classes
Matt Johnston <matt@ucc.asn.au>
parents: 1801
diff changeset
389
6022df862942 Use DSCP for IP QoS traffic classes
Matt Johnston <matt@ucc.asn.au>
parents: 1801
diff changeset
390 Old Dropbear/OpenSSH and Debian/Ubuntu OpenSSH (at Jan 2022) use
6022df862942 Use DSCP for IP QoS traffic classes
Matt Johnston <matt@ucc.asn.au>
parents: 1801
diff changeset
391 IPTOS_LOWDELAY/IPTOS_THROUGHPUT
1858
ed3326f21888 Test for IP_TOS and hardcode DSCP values
Matt Johnston <matt@ucc.asn.au>
parents: 1857
diff changeset
392
ed3326f21888 Test for IP_TOS and hardcode DSCP values
Matt Johnston <matt@ucc.asn.au>
parents: 1857
diff changeset
393 DSCP constants are from Linux headers, applicable to other platforms
ed3326f21888 Test for IP_TOS and hardcode DSCP values
Matt Johnston <matt@ucc.asn.au>
parents: 1857
diff changeset
394 such as macos.
1857
6022df862942 Use DSCP for IP QoS traffic classes
Matt Johnston <matt@ucc.asn.au>
parents: 1801
diff changeset
395 */
1032
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
396 if (prio == DROPBEAR_PRIO_LOWDELAY) {
1858
ed3326f21888 Test for IP_TOS and hardcode DSCP values
Matt Johnston <matt@ucc.asn.au>
parents: 1857
diff changeset
397 val = 0x48; /* IPTOS_DSCP_AF21 */
1857
6022df862942 Use DSCP for IP QoS traffic classes
Matt Johnston <matt@ucc.asn.au>
parents: 1801
diff changeset
398 } else {
6022df862942 Use DSCP for IP QoS traffic classes
Matt Johnston <matt@ucc.asn.au>
parents: 1801
diff changeset
399 val = 0; /* default */
1032
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
400 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
401 #if defined(IPPROTO_IPV6) && defined(IPV6_TCLASS)
1857
6022df862942 Use DSCP for IP QoS traffic classes
Matt Johnston <matt@ucc.asn.au>
parents: 1801
diff changeset
402 rc = setsockopt(sock, IPPROTO_IPV6, IPV6_TCLASS, (void*)&val, sizeof(val));
1032
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
403 if (rc < 0 && errno != ENOTSOCK) {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
404 TRACE(("Couldn't set IPV6_TCLASS (%s)", strerror(errno)));
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
405 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
406 #endif
1857
6022df862942 Use DSCP for IP QoS traffic classes
Matt Johnston <matt@ucc.asn.au>
parents: 1801
diff changeset
407 rc = setsockopt(sock, IPPROTO_IP, IP_TOS, (void*)&val, sizeof(val));
1032
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
408 if (rc < 0 && errno != ENOTSOCK) {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
409 TRACE(("Couldn't set IP_TOS (%s)", strerror(errno)));
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
410 }
1858
ed3326f21888 Test for IP_TOS and hardcode DSCP values
Matt Johnston <matt@ucc.asn.au>
parents: 1857
diff changeset
411 #endif /* IP_TOS */
1032
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
412
1426
89f8c5960527 test for linux/pkt-sched.h rather than SO_PRIORITY
Matt Johnston <matt@ucc.asn.au>
parents: 1316
diff changeset
413 #ifdef HAVE_LINUX_PKT_SCHED_H
1857
6022df862942 Use DSCP for IP QoS traffic classes
Matt Johnston <matt@ucc.asn.au>
parents: 1801
diff changeset
414 /* Set scheduling priority within the local Linux network stack */
1032
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
415 if (prio == DROPBEAR_PRIO_LOWDELAY) {
1857
6022df862942 Use DSCP for IP QoS traffic classes
Matt Johnston <matt@ucc.asn.au>
parents: 1801
diff changeset
416 val = TC_PRIO_INTERACTIVE;
6022df862942 Use DSCP for IP QoS traffic classes
Matt Johnston <matt@ucc.asn.au>
parents: 1801
diff changeset
417 } else {
6022df862942 Use DSCP for IP QoS traffic classes
Matt Johnston <matt@ucc.asn.au>
parents: 1801
diff changeset
418 val = 0;
1032
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
419 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
420 /* linux specific, sets QoS class. see tc-prio(8) */
1857
6022df862942 Use DSCP for IP QoS traffic classes
Matt Johnston <matt@ucc.asn.au>
parents: 1801
diff changeset
421 rc = setsockopt(sock, SOL_SOCKET, SO_PRIORITY, (void*) &val, sizeof(val));
1704
d384bc2e5af3 Don't warn when SO_PRIORITY fails
Matt Johnston <matt@ucc.asn.au>
parents: 1636
diff changeset
422 if (rc < 0 && errno != ENOTSOCK) {
d384bc2e5af3 Don't warn when SO_PRIORITY fails
Matt Johnston <matt@ucc.asn.au>
parents: 1636
diff changeset
423 TRACE(("Couldn't set SO_PRIORITY (%s)", strerror(errno)))
d384bc2e5af3 Don't warn when SO_PRIORITY fails
Matt Johnston <matt@ucc.asn.au>
parents: 1636
diff changeset
424 }
1032
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
425 #endif
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
426
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
427 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
428
1464
ad637c9e0f6f Server chosen tcpfwd ports (#43)
houseofkodai <karthik@houseofkodai.in>
parents: 1459
diff changeset
429 /* from openssh/canohost.c avoid premature-optimization */
ad637c9e0f6f Server chosen tcpfwd ports (#43)
houseofkodai <karthik@houseofkodai.in>
parents: 1459
diff changeset
430 int get_sock_port(int sock) {
ad637c9e0f6f Server chosen tcpfwd ports (#43)
houseofkodai <karthik@houseofkodai.in>
parents: 1459
diff changeset
431 struct sockaddr_storage from;
ad637c9e0f6f Server chosen tcpfwd ports (#43)
houseofkodai <karthik@houseofkodai.in>
parents: 1459
diff changeset
432 socklen_t fromlen;
ad637c9e0f6f Server chosen tcpfwd ports (#43)
houseofkodai <karthik@houseofkodai.in>
parents: 1459
diff changeset
433 char strport[NI_MAXSERV];
ad637c9e0f6f Server chosen tcpfwd ports (#43)
houseofkodai <karthik@houseofkodai.in>
parents: 1459
diff changeset
434 int r;
ad637c9e0f6f Server chosen tcpfwd ports (#43)
houseofkodai <karthik@houseofkodai.in>
parents: 1459
diff changeset
435
ad637c9e0f6f Server chosen tcpfwd ports (#43)
houseofkodai <karthik@houseofkodai.in>
parents: 1459
diff changeset
436 /* Get IP address of client. */
ad637c9e0f6f Server chosen tcpfwd ports (#43)
houseofkodai <karthik@houseofkodai.in>
parents: 1459
diff changeset
437 fromlen = sizeof(from);
ad637c9e0f6f Server chosen tcpfwd ports (#43)
houseofkodai <karthik@houseofkodai.in>
parents: 1459
diff changeset
438 memset(&from, 0, sizeof(from));
ad637c9e0f6f Server chosen tcpfwd ports (#43)
houseofkodai <karthik@houseofkodai.in>
parents: 1459
diff changeset
439 if (getsockname(sock, (struct sockaddr *)&from, &fromlen) < 0) {
ad637c9e0f6f Server chosen tcpfwd ports (#43)
houseofkodai <karthik@houseofkodai.in>
parents: 1459
diff changeset
440 TRACE(("getsockname failed: %d", errno))
ad637c9e0f6f Server chosen tcpfwd ports (#43)
houseofkodai <karthik@houseofkodai.in>
parents: 1459
diff changeset
441 return 0;
ad637c9e0f6f Server chosen tcpfwd ports (#43)
houseofkodai <karthik@houseofkodai.in>
parents: 1459
diff changeset
442 }
ad637c9e0f6f Server chosen tcpfwd ports (#43)
houseofkodai <karthik@houseofkodai.in>
parents: 1459
diff changeset
443
ad637c9e0f6f Server chosen tcpfwd ports (#43)
houseofkodai <karthik@houseofkodai.in>
parents: 1459
diff changeset
444 /* Work around Linux IPv6 weirdness */
ad637c9e0f6f Server chosen tcpfwd ports (#43)
houseofkodai <karthik@houseofkodai.in>
parents: 1459
diff changeset
445 if (from.ss_family == AF_INET6)
ad637c9e0f6f Server chosen tcpfwd ports (#43)
houseofkodai <karthik@houseofkodai.in>
parents: 1459
diff changeset
446 fromlen = sizeof(struct sockaddr_in6);
ad637c9e0f6f Server chosen tcpfwd ports (#43)
houseofkodai <karthik@houseofkodai.in>
parents: 1459
diff changeset
447
ad637c9e0f6f Server chosen tcpfwd ports (#43)
houseofkodai <karthik@houseofkodai.in>
parents: 1459
diff changeset
448 /* Non-inet sockets don't have a port number. */
ad637c9e0f6f Server chosen tcpfwd ports (#43)
houseofkodai <karthik@houseofkodai.in>
parents: 1459
diff changeset
449 if (from.ss_family != AF_INET && from.ss_family != AF_INET6)
ad637c9e0f6f Server chosen tcpfwd ports (#43)
houseofkodai <karthik@houseofkodai.in>
parents: 1459
diff changeset
450 return 0;
ad637c9e0f6f Server chosen tcpfwd ports (#43)
houseofkodai <karthik@houseofkodai.in>
parents: 1459
diff changeset
451
ad637c9e0f6f Server chosen tcpfwd ports (#43)
houseofkodai <karthik@houseofkodai.in>
parents: 1459
diff changeset
452 /* Return port number. */
ad637c9e0f6f Server chosen tcpfwd ports (#43)
houseofkodai <karthik@houseofkodai.in>
parents: 1459
diff changeset
453 if ((r = getnameinfo((struct sockaddr *)&from, fromlen, NULL, 0,
ad637c9e0f6f Server chosen tcpfwd ports (#43)
houseofkodai <karthik@houseofkodai.in>
parents: 1459
diff changeset
454 strport, sizeof(strport), NI_NUMERICSERV)) != 0) {
ad637c9e0f6f Server chosen tcpfwd ports (#43)
houseofkodai <karthik@houseofkodai.in>
parents: 1459
diff changeset
455 TRACE(("netio.c/get_sock_port/getnameinfo NI_NUMERICSERV failed: %d", r))
ad637c9e0f6f Server chosen tcpfwd ports (#43)
houseofkodai <karthik@houseofkodai.in>
parents: 1459
diff changeset
456 }
ad637c9e0f6f Server chosen tcpfwd ports (#43)
houseofkodai <karthik@houseofkodai.in>
parents: 1459
diff changeset
457 return atoi(strport);
ad637c9e0f6f Server chosen tcpfwd ports (#43)
houseofkodai <karthik@houseofkodai.in>
parents: 1459
diff changeset
458 }
ad637c9e0f6f Server chosen tcpfwd ports (#43)
houseofkodai <karthik@houseofkodai.in>
parents: 1459
diff changeset
459
1032
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
460 /* Listen on address:port.
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
461 * Special cases are address of "" listening on everything,
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
462 * and address of NULL listening on localhost only.
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
463 * Returns the number of sockets bound on success, or -1 on failure. On
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
464 * failure, if errstring wasn't NULL, it'll be a newly malloced error
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
465 * string.*/
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
466 int dropbear_listen(const char* address, const char* port,
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
467 int *socks, unsigned int sockcount, char **errstring, int *maxfd) {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
468
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
469 struct addrinfo hints, *res = NULL, *res0 = NULL;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
470 int err;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
471 unsigned int nsock;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
472 struct linger linger;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
473 int val;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
474 int sock;
1797
f680a19bd559 Small cleanups of netio allocated port
Matt Johnston <matt@ucc.asn.au>
parents: 1796
diff changeset
475 uint16_t *allocated_lport_p = NULL;
1796
74f4a5987234 Update netio.c (#115)
Guillaume Picquet <guillaume.picquet@gls-france.com>
parents: 1786
diff changeset
476 int allocated_lport = 0;
74f4a5987234 Update netio.c (#115)
Guillaume Picquet <guillaume.picquet@gls-france.com>
parents: 1786
diff changeset
477
1032
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
478 TRACE(("enter dropbear_listen"))
1786
a3b39df57c8b fuzz: add an always-failing dropbear_listen() replacement
Matt Johnston <matt@ucc.asn.au>
parents: 1777
diff changeset
479
a3b39df57c8b fuzz: add an always-failing dropbear_listen() replacement
Matt Johnston <matt@ucc.asn.au>
parents: 1777
diff changeset
480 #if DROPBEAR_FUZZ
a3b39df57c8b fuzz: add an always-failing dropbear_listen() replacement
Matt Johnston <matt@ucc.asn.au>
parents: 1777
diff changeset
481 if (fuzz.fuzzing) {
a3b39df57c8b fuzz: add an always-failing dropbear_listen() replacement
Matt Johnston <matt@ucc.asn.au>
parents: 1777
diff changeset
482 return fuzz_dropbear_listen(address, port, socks, sockcount, errstring, maxfd);
a3b39df57c8b fuzz: add an always-failing dropbear_listen() replacement
Matt Johnston <matt@ucc.asn.au>
parents: 1777
diff changeset
483 }
a3b39df57c8b fuzz: add an always-failing dropbear_listen() replacement
Matt Johnston <matt@ucc.asn.au>
parents: 1777
diff changeset
484 #endif
1032
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
485
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
486 memset(&hints, 0, sizeof(hints));
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
487 hints.ai_family = AF_UNSPEC; /* TODO: let them flag v4 only etc */
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
488 hints.ai_socktype = SOCK_STREAM;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
489
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
490 /* for calling getaddrinfo:
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
491 address == NULL and !AI_PASSIVE: local loopback
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
492 address == NULL and AI_PASSIVE: all interfaces
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
493 address != NULL: whatever the address says */
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
494 if (!address) {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
495 TRACE(("dropbear_listen: local loopback"))
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
496 } else {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
497 if (address[0] == '\0') {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
498 TRACE(("dropbear_listen: all interfaces"))
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
499 address = NULL;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
500 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
501 hints.ai_flags = AI_PASSIVE;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
502 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
503 err = getaddrinfo(address, port, &hints, &res0);
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
504
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
505 if (err) {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
506 if (errstring != NULL && *errstring == NULL) {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
507 int len;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
508 len = 20 + strlen(gai_strerror(err));
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
509 *errstring = (char*)m_malloc(len);
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
510 snprintf(*errstring, len, "Error resolving: %s", gai_strerror(err));
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
511 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
512 if (res0) {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
513 freeaddrinfo(res0);
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
514 res0 = NULL;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
515 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
516 TRACE(("leave dropbear_listen: failed resolving"))
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
517 return -1;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
518 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
519
1797
f680a19bd559 Small cleanups of netio allocated port
Matt Johnston <matt@ucc.asn.au>
parents: 1796
diff changeset
520 /* When listening on server-assigned-port 0
1464
ad637c9e0f6f Server chosen tcpfwd ports (#43)
houseofkodai <karthik@houseofkodai.in>
parents: 1459
diff changeset
521 * the assigned ports may differ for address families (v4/v6)
1797
f680a19bd559 Small cleanups of netio allocated port
Matt Johnston <matt@ucc.asn.au>
parents: 1796
diff changeset
522 * causing problems for tcpip-forward.
f680a19bd559 Small cleanups of netio allocated port
Matt Johnston <matt@ucc.asn.au>
parents: 1796
diff changeset
523 * Caller can do a get_socket_address to discover assigned-port
f680a19bd559 Small cleanups of netio allocated port
Matt Johnston <matt@ucc.asn.au>
parents: 1796
diff changeset
524 * hence, use same port for all address families */
f680a19bd559 Small cleanups of netio allocated port
Matt Johnston <matt@ucc.asn.au>
parents: 1796
diff changeset
525 allocated_lport = 0;
1032
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
526 nsock = 0;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
527 for (res = res0; res != NULL && nsock < sockcount;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
528 res = res->ai_next) {
1464
ad637c9e0f6f Server chosen tcpfwd ports (#43)
houseofkodai <karthik@houseofkodai.in>
parents: 1459
diff changeset
529 if (allocated_lport > 0) {
ad637c9e0f6f Server chosen tcpfwd ports (#43)
houseofkodai <karthik@houseofkodai.in>
parents: 1459
diff changeset
530 if (AF_INET == res->ai_family) {
ad637c9e0f6f Server chosen tcpfwd ports (#43)
houseofkodai <karthik@houseofkodai.in>
parents: 1459
diff changeset
531 allocated_lport_p = &((struct sockaddr_in *)res->ai_addr)->sin_port;
ad637c9e0f6f Server chosen tcpfwd ports (#43)
houseofkodai <karthik@houseofkodai.in>
parents: 1459
diff changeset
532 } else if (AF_INET6 == res->ai_family) {
ad637c9e0f6f Server chosen tcpfwd ports (#43)
houseofkodai <karthik@houseofkodai.in>
parents: 1459
diff changeset
533 allocated_lport_p = &((struct sockaddr_in6 *)res->ai_addr)->sin6_port;
ad637c9e0f6f Server chosen tcpfwd ports (#43)
houseofkodai <karthik@houseofkodai.in>
parents: 1459
diff changeset
534 }
ad637c9e0f6f Server chosen tcpfwd ports (#43)
houseofkodai <karthik@houseofkodai.in>
parents: 1459
diff changeset
535 *allocated_lport_p = htons(allocated_lport);
ad637c9e0f6f Server chosen tcpfwd ports (#43)
houseofkodai <karthik@houseofkodai.in>
parents: 1459
diff changeset
536 }
ad637c9e0f6f Server chosen tcpfwd ports (#43)
houseofkodai <karthik@houseofkodai.in>
parents: 1459
diff changeset
537
1032
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
538 /* Get a socket */
1797
f680a19bd559 Small cleanups of netio allocated port
Matt Johnston <matt@ucc.asn.au>
parents: 1796
diff changeset
539 socks[nsock] = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
1032
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
540 sock = socks[nsock]; /* For clarity */
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
541 if (sock < 0) {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
542 err = errno;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
543 TRACE(("socket() failed"))
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
544 continue;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
545 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
546
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
547 /* Various useful socket options */
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
548 val = 1;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
549 /* set to reuse, quick timeout */
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
550 setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (void*) &val, sizeof(val));
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
551 linger.l_onoff = 1;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
552 linger.l_linger = 5;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
553 setsockopt(sock, SOL_SOCKET, SO_LINGER, (void*)&linger, sizeof(linger));
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
554
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
555 #if defined(IPPROTO_IPV6) && defined(IPV6_V6ONLY)
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
556 if (res->ai_family == AF_INET6) {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
557 int on = 1;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
558 if (setsockopt(sock, IPPROTO_IPV6, IPV6_V6ONLY,
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
559 &on, sizeof(on)) == -1) {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
560 dropbear_log(LOG_WARNING, "Couldn't set IPV6_V6ONLY");
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
561 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
562 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
563 #endif
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
564 set_sock_nodelay(sock);
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
565
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
566 if (bind(sock, res->ai_addr, res->ai_addrlen) < 0) {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
567 err = errno;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
568 close(sock);
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
569 TRACE(("bind(%s) failed", port))
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
570 continue;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
571 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
572
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
573 if (listen(sock, DROPBEAR_LISTEN_BACKLOG) < 0) {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
574 err = errno;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
575 close(sock);
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
576 TRACE(("listen() failed"))
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
577 continue;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
578 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
579
1464
ad637c9e0f6f Server chosen tcpfwd ports (#43)
houseofkodai <karthik@houseofkodai.in>
parents: 1459
diff changeset
580 if (0 == allocated_lport) {
ad637c9e0f6f Server chosen tcpfwd ports (#43)
houseofkodai <karthik@houseofkodai.in>
parents: 1459
diff changeset
581 allocated_lport = get_sock_port(sock);
ad637c9e0f6f Server chosen tcpfwd ports (#43)
houseofkodai <karthik@houseofkodai.in>
parents: 1459
diff changeset
582 }
ad637c9e0f6f Server chosen tcpfwd ports (#43)
houseofkodai <karthik@houseofkodai.in>
parents: 1459
diff changeset
583
1032
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
584 *maxfd = MAX(*maxfd, sock);
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
585 nsock++;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
586 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
587
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
588 if (res0) {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
589 freeaddrinfo(res0);
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
590 res0 = NULL;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
591 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
592
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
593 if (nsock == 0) {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
594 if (errstring != NULL && *errstring == NULL) {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
595 int len;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
596 len = 20 + strlen(strerror(err));
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
597 *errstring = (char*)m_malloc(len);
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
598 snprintf(*errstring, len, "Error listening: %s", strerror(err));
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
599 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
600 TRACE(("leave dropbear_listen: failure, %s", strerror(err)))
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
601 return -1;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
602 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
603
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
604 TRACE(("leave dropbear_listen: success, %d socks bound", nsock))
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
605 return nsock;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
606 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
607
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
608 void get_socket_address(int fd, char **local_host, char **local_port,
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
609 char **remote_host, char **remote_port, int host_lookup)
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
610 {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
611 struct sockaddr_storage addr;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
612 socklen_t addrlen;
1383
f03cfe9c76ac Disable setnonblocking(), get_socket_address(), set_sock_priority()
Matt Johnston <matt@ucc.asn.au>
parents: 1357
diff changeset
613
f03cfe9c76ac Disable setnonblocking(), get_socket_address(), set_sock_priority()
Matt Johnston <matt@ucc.asn.au>
parents: 1357
diff changeset
614 #if DROPBEAR_FUZZ
f03cfe9c76ac Disable setnonblocking(), get_socket_address(), set_sock_priority()
Matt Johnston <matt@ucc.asn.au>
parents: 1357
diff changeset
615 if (fuzz.fuzzing) {
f03cfe9c76ac Disable setnonblocking(), get_socket_address(), set_sock_priority()
Matt Johnston <matt@ucc.asn.au>
parents: 1357
diff changeset
616 fuzz_get_socket_address(fd, local_host, local_port, remote_host, remote_port, host_lookup);
f03cfe9c76ac Disable setnonblocking(), get_socket_address(), set_sock_priority()
Matt Johnston <matt@ucc.asn.au>
parents: 1357
diff changeset
617 return;
f03cfe9c76ac Disable setnonblocking(), get_socket_address(), set_sock_priority()
Matt Johnston <matt@ucc.asn.au>
parents: 1357
diff changeset
618 }
f03cfe9c76ac Disable setnonblocking(), get_socket_address(), set_sock_priority()
Matt Johnston <matt@ucc.asn.au>
parents: 1357
diff changeset
619 #endif
1032
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
620
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
621 if (local_host || local_port) {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
622 addrlen = sizeof(addr);
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
623 if (getsockname(fd, (struct sockaddr*)&addr, &addrlen) < 0) {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
624 dropbear_exit("Failed socket address: %s", strerror(errno));
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
625 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
626 getaddrstring(&addr, local_host, local_port, host_lookup);
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
627 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
628 if (remote_host || remote_port) {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
629 addrlen = sizeof(addr);
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
630 if (getpeername(fd, (struct sockaddr*)&addr, &addrlen) < 0) {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
631 dropbear_exit("Failed socket address: %s", strerror(errno));
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
632 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
633 getaddrstring(&addr, remote_host, remote_port, host_lookup);
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
634 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
635 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
636
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
637 /* Return a string representation of the socket address passed. The return
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
638 * value is allocated with malloc() */
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
639 void getaddrstring(struct sockaddr_storage* addr,
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
640 char **ret_host, char **ret_port,
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
641 int host_lookup) {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
642
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
643 char host[NI_MAXHOST+1], serv[NI_MAXSERV+1];
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
644 unsigned int len;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
645 int ret;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
646
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
647 int flags = NI_NUMERICSERV | NI_NUMERICHOST;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
648
1499
2d450c1056e3 options: Complete the transition to numeric toggles (`#if')
Michael Witten <mfwitten@gmail.com>
parents: 1466
diff changeset
649 #if !DO_HOST_LOOKUP
1032
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
650 host_lookup = 0;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
651 #endif
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
652
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
653 if (host_lookup) {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
654 flags = NI_NUMERICSERV;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
655 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
656
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
657 len = sizeof(struct sockaddr_storage);
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
658 /* Some platforms such as Solaris 8 require that len is the length
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
659 * of the specific structure. Some older linux systems (glibc 2.1.3
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
660 * such as debian potato) have sockaddr_storage.__ss_family instead
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
661 * but we'll ignore them */
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
662 #ifdef HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
663 if (addr->ss_family == AF_INET) {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
664 len = sizeof(struct sockaddr_in);
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
665 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
666 #ifdef AF_INET6
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
667 if (addr->ss_family == AF_INET6) {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
668 len = sizeof(struct sockaddr_in6);
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
669 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
670 #endif
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
671 #endif
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
672
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
673 ret = getnameinfo((struct sockaddr*)addr, len, host, sizeof(host)-1,
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
674 serv, sizeof(serv)-1, flags);
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
675
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
676 if (ret != 0) {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
677 if (host_lookup) {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
678 /* On some systems (Darwin does it) we get EINTR from getnameinfo
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
679 * somehow. Eew. So we'll just return the IP, since that doesn't seem
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
680 * to exhibit that behaviour. */
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
681 getaddrstring(addr, ret_host, ret_port, 0);
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
682 return;
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
683 } else {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
684 /* if we can't do a numeric lookup, something's gone terribly wrong */
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
685 dropbear_exit("Failed lookup: %s", gai_strerror(ret));
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
686 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
687 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
688
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
689 if (ret_host) {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
690 *ret_host = m_strdup(host);
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
691 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
692 if (ret_port) {
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
693 *ret_port = m_strdup(serv);
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
694 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
695 }
0da8ba489c23 Move generic network routines to netio.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
696