Mercurial > dropbear

annotate tcpfwd-remote.c @ 14:5ae28f6101c1

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Don't bother printing errno in exit messages (the code wasn't valid anyway)
author Matt Johnston <matt@ucc.asn.au>
date Mon, 07 Jun 2004 11:36:07 +0000
parents f76c9389e9e0
children d7cc5b484a2e
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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9
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Matt Johnston <matt@ucc.asn.au>
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1 #include "includes.h"
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2 #include "ssh.h"
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3 #include "tcpfwd-remote.h"
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4 #include "dbutil.h"
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5 #include "session.h"
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6 #include "buffer.h"
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7 #include "packet.h"
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8 #include "listener.h"
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9
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10 #ifndef DISABLE_REMOTETCPFWD
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11
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12 struct RemoteTCP {
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13
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14 unsigned char* addr;
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15 unsigned int port;
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16
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17 };
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18
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19 static void send_msg_request_success();
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20 static void send_msg_request_failure();
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21 static int cancelremotetcp();
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22 static int remotetcpreq();
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23 static int listen_tcpfwd(unsigned char* bindaddr, unsigned int port);
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24 static void acceptremote(struct Listener *listener);
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25
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26 /* At the moment this is completely used for tcp code (with the name reflecting
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27 * that). If new request types are added, this should be replaced with code
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28 * similar to the request-switching in chansession.c */
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29 void recv_msg_global_request_remotetcp() {
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30
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31 unsigned char* reqname = NULL;
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32 unsigned int namelen;
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33 unsigned int wantreply = 0;
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34 int ret = DROPBEAR_FAILURE;
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35
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36 TRACE(("enter recv_msg_global_request_remotetcp"));
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37
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38 if (ses.opts->noremotetcp) {
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39 TRACE(("leave recv_msg_global_request_remotetcp: remote tcp forwarding disabled"));
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40 goto out;
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41 }
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42
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43 reqname = buf_getstring(ses.payload, &namelen);
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44 wantreply = buf_getbyte(ses.payload);
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45
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46 if (namelen > MAXNAMLEN) {
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47 TRACE(("name len is wrong: %d", namelen));
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48 goto out;
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49 }
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50
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51 if (strcmp("tcpip-forward", reqname) == 0) {
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52 ret = remotetcpreq();
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53 } else if (strcmp("cancel-tcpip-forward", reqname) == 0) {
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54 ret = cancelremotetcp();
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55 } else {
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56 TRACE(("reqname isn't tcpip-forward: '%s'", reqname));
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57 }
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58
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59 out:
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60 if (wantreply) {
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61 if (ret == DROPBEAR_SUCCESS) {
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62 send_msg_request_success();
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63 } else {
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64 send_msg_request_failure();
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65 }
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66 }
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67
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68 m_free(reqname);
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69
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70 TRACE(("leave recv_msg_global_request"));
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71 }
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72
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73 static const struct ChanType chan_tcpremote = {
11
f76c9389e9e0 Mostly done with the listener changeover
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74 1, /* sepfds */
9
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75 "forwarded-tcpip",
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76 NULL,
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77 NULL,
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78 NULL,
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79 NULL
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80 };
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81
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82
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83 static void acceptremote(struct Listener *listener) {
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84
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85 int fd;
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86 struct sockaddr addr;
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87 int len;
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88 char ipstring[NI_MAXHOST], portstring[NI_MAXSERV];
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89 struct RemoteTCP *tcpinfo = (struct RemoteTCP*)(listener->typedata);
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90
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91 len = sizeof(addr);
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92
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93 fd = accept(listener->sock, &addr, &len);
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94 if (fd < 0) {
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95 return;
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96 }
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97
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98 if (getnameinfo(&addr, len, ipstring, sizeof(ipstring), portstring,
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99 sizeof(portstring), NI_NUMERICHOST | NI_NUMERICSERV) != 0) {
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100 return;
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101 }
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102
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103 if (send_msg_channel_open_init(fd, &chan_tcpremote) == DROPBEAR_SUCCESS) {
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104
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105 buf_putstring(ses.writepayload, tcpinfo->addr,
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106 strlen(tcpinfo->addr));
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107 buf_putint(ses.writepayload, tcpinfo->port);
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108 buf_putstring(ses.writepayload, ipstring, strlen(ipstring));
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109 buf_putint(ses.writepayload, atol(portstring));
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110 encrypt_packet();
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111
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112 } else {
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113 /* XXX debug? */
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114 close(fd);
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115 }
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116 }
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117
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118 static void cleanupremote(struct Listener *listener) {
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119
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120 struct RemoteTCP *tcpinfo = (struct RemoteTCP*)(listener->typedata);
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121
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122 m_free(tcpinfo->addr);
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123 m_free(tcpinfo);
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124 }
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125
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126 static void send_msg_request_success() {
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127
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128 CHECKCLEARTOWRITE();
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129 buf_putbyte(ses.writepayload, SSH_MSG_REQUEST_SUCCESS);
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130 encrypt_packet();
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131
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132 }
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133
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134 static void send_msg_request_failure() {
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135
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136 CHECKCLEARTOWRITE();
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137 buf_putbyte(ses.writepayload, SSH_MSG_REQUEST_FAILURE);
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138 encrypt_packet();
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139
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140 }
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141
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142 static int matchtcp(void* typedata1, void* typedata2) {
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143
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144 const struct RemoteTCP *info1 = (struct RemoteTCP*)typedata1;
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145 const struct RemoteTCP *info2 = (struct RemoteTCP*)typedata2;
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146
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
147 return info1->port == info2->port
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
148 && (strcmp(info1->addr, info2->addr) == 0);
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
149 }
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
150
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
151 static int cancelremotetcp() {
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
152
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
153 int ret = DROPBEAR_FAILURE;
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
154 unsigned char * bindaddr = NULL;
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
155 unsigned int addrlen;
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
156 unsigned int port;
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
157 struct Listener * listener = NULL;
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
158 struct RemoteTCP tcpinfo;
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
159
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
160 TRACE(("enter cancelremotetcp"));
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
161
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
162 bindaddr = buf_getstring(ses.payload, &addrlen);
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
163 if (addrlen > MAX_IP_LEN) {
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
164 TRACE(("addr len too long: %d", addrlen));
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
165 goto out;
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
166 }
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
167
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
168 port = buf_getint(ses.payload);
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
169
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
170 tcpinfo.addr = bindaddr;
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
171 tcpinfo.port = port;
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
172 listener = get_listener(CHANNEL_ID_TCPFORWARDED, &tcpinfo, matchtcp);
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
173 if (listener) {
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
174 remove_listener( listener );
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
175 ret = DROPBEAR_SUCCESS;
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
176 }
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
177
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
178 out:
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
179 m_free(bindaddr);
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
180 TRACE(("leave cancelremotetcp"));
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
181 return ret;
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
182 }
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
183
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
184 static int remotetcpreq() {
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
185
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
186 int ret = DROPBEAR_FAILURE;
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
187 unsigned char * bindaddr = NULL;
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
188 unsigned int addrlen;
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
189 unsigned int port;
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
190
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
191 TRACE(("enter remotetcpreq"));
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
192
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
193 bindaddr = buf_getstring(ses.payload, &addrlen);
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
194 if (addrlen > MAX_IP_LEN) {
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
195 TRACE(("addr len too long: %d", addrlen));
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
196 goto out;
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
197 }
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
198
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
199 port = buf_getint(ses.payload);
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
200
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
201 if (port == 0) {
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
202 dropbear_log(LOG_INFO, "Server chosen tcpfwd ports are unsupported");
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
203 goto out;
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
204 }
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
205
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
206 if (port < 1 || port > 65535) {
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
207 TRACE(("invalid port: %d", port));
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
208 goto out;
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
209 }
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
210
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
211 /* XXX matt - server change
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
212 if (ses.authstate.pw->pw_uid != 0
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
213 && port < IPPORT_RESERVED) {
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
214 TRACE(("can't assign port < 1024 for non-root"));
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
215 goto out;
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
216 }
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
217 */
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
218
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
219 ret = listen_tcpfwd(bindaddr, port);
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
220
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
221 out:
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
222 if (ret == DROPBEAR_FAILURE) {
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
223 /* we only free it if a listener wasn't created, since the listener
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
224 * has to remember it if it's to be cancelled */
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
225 m_free(bindaddr);
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
226 }
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
227 TRACE(("leave remotetcpreq"));
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
228 return ret;
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
229 }
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
230
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
231 static int listen_tcpfwd(unsigned char* bindaddr, unsigned int port) {
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
232
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
233 struct RemoteTCP * tcpinfo = NULL;
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
234 char portstring[6]; /* "65535\0" */
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
235 struct addrinfo *res = NULL, *ai = NULL;
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
236 struct addrinfo hints;
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
237 int sock = -1;
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
238 struct Listener *listener = NULL;
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
239
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
240 TRACE(("enter listen_tcpfwd"));
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
241
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
242 /* first we try to bind, so don't need to do so much cleanup on failure */
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
243 snprintf(portstring, sizeof(portstring), "%d", port);
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
244 memset(&hints, 0x0, sizeof(hints));
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
245 hints.ai_socktype = SOCK_STREAM;
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
246 hints.ai_family = PF_INET;
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
247 hints.ai_flags = AI_PASSIVE | AI_NUMERICHOST;
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
248
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
249 if (getaddrinfo(bindaddr, portstring, &hints, &res) < 0) {
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
250 TRACE(("leave listen_tcpfwd: getaddrinfo failed: %s",
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
251 strerror(errno)));
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
252 goto done;
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
253 }
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
254
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
255 /* find the first one which works */
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
256 for (ai = res; ai != NULL; ai = ai->ai_next) {
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
257 if (ai->ai_family != PF_INET && ai->ai_family != PF_INET6) {
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
258 continue;
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
259 }
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
260
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
261 sock = socket(ai->ai_family, SOCK_STREAM, 0);
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
262 if (sock < 0) {
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
263 TRACE(("socket failed: %s", strerror(errno)));
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
264 goto fail;
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
265 }
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
266
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
267 if (bind(sock, ai->ai_addr, ai->ai_addrlen) < 0) {
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
268 TRACE(("bind failed: %s", strerror(errno)));
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
269 goto fail;
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
270 }
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
271
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
272 if (listen(sock, 20) < 0) {
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
273 TRACE(("listen failed: %s", strerror(errno)));
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
274 goto fail;
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
275 }
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
276
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
277 if (fcntl(sock, F_SETFL, O_NONBLOCK) < 0) {
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
278 TRACE(("fcntl nonblocking failed: %s", strerror(errno)));
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
279 goto fail;
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
280 }
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
281
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
282 /* success */
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
283 break;
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
284
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
285 fail:
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
286 close(sock);
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
287 }
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
288
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
289
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
290 if (ai == NULL) {
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
291 TRACE(("no successful sockets"));
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
292 goto done;
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
293 }
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
294
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
295 tcpinfo = (struct RemoteTCP*)m_malloc(sizeof(struct RemoteTCP));
7f77962de998 - Reworked non-channel fd handling to listener.c
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296 tcpinfo->addr = bindaddr;
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297 tcpinfo->port = port;
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298
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299 listener = new_listener(sock, CHANNEL_ID_TCPFORWARDED, tcpinfo,
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300 acceptremote, cleanupremote);
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301
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302 if (listener == NULL) {
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303 m_free(tcpinfo);
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304 }
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305
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306 done:
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307 if (res) {
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308 freeaddrinfo(res);
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309 }
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310
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311 TRACE(("leave listen_tcpfwd"));
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312 if (listener == NULL) {
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313 return DROPBEAR_FAILURE;
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314 } else {
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315 return DROPBEAR_SUCCESS;
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316 }
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317 }
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318
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319 #endif /* DISABLE_REMOTETCPFWD */