dropbear: netio.c annotate

annotate netio.c @ 1884:75d6a9faf919

Merge pull request #151 from HansH111/pubkeyinfo

author	Matt Johnston <matt@ucc.asn.au>
date	Wed, 16 Mar 2022 10:43:24 +0800
parents	5001e9c5641f
children

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

Mercurial > dropbear

annotate netio.c @ 1884:75d6a9faf919