annotate svr-kex.c @ 1891:40f8468ad4d4

Allow for DEBUG_TRACE value 0 - 5
author HansH111 <hans@atbas.org>
date Sat, 19 Mar 2022 08:54:25 +0000
parents 435cfb9ec96e
children 284c3837891c
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 /*
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2 * Dropbear - a SSH2 server
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3 *
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4 * Copyright (c) 2002,2003 Matt Johnston
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5 * Copyright (c) 2004 by Mihnea Stoenescu
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6 * All rights reserved.
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7 *
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8 * Permission is hereby granted, free of charge, to any person obtaining a copy
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9 * of this software and associated documentation files (the "Software"), to deal
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10 * in the Software without restriction, including without limitation the rights
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11 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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12 * copies of the Software, and to permit persons to whom the Software is
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13 * furnished to do so, subject to the following conditions:
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14 *
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15 * The above copyright notice and this permission notice shall be included in
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16 * all copies or substantial portions of the Software.
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17 *
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18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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21 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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23 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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24 * SOFTWARE. */
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25
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26 #include "includes.h"
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27 #include "dbutil.h"
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28 #include "algo.h"
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29 #include "buffer.h"
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30 #include "session.h"
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31 #include "kex.h"
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32 #include "ssh.h"
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33 #include "packet.h"
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34 #include "bignum.h"
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35 #include "dbrandom.h"
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36 #include "runopts.h"
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37 #include "ecc.h"
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38 #include "gensignkey.h"
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39
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40 static void send_msg_kexdh_reply(mp_int *dh_e, buffer *ecdh_qs);
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41 #if DROPBEAR_EXT_INFO
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42 static void send_msg_ext_info(void);
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43 #endif
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45 /* Handle a diffie-hellman key exchange initialisation. This involves
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46 * calculating a session key reply value, and corresponding hash. These
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47 * are carried out by send_msg_kexdh_reply(). recv_msg_kexdh_init() calls
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48 * that function, then brings the new keys into use */
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49 void recv_msg_kexdh_init() {
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50 DEF_MP_INT(dh_e);
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51 buffer *ecdh_qs = NULL;
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52
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53 TRACE(("enter recv_msg_kexdh_init"))
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54 if (!ses.kexstate.recvkexinit) {
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55 dropbear_exit("Premature kexdh_init message received");
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56 }
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57
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58 switch (ses.newkeys->algo_kex->mode) {
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59 #if DROPBEAR_NORMAL_DH
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60 case DROPBEAR_KEX_NORMAL_DH:
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61 m_mp_init(&dh_e);
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62 if (buf_getmpint(ses.payload, &dh_e) != DROPBEAR_SUCCESS) {
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63 dropbear_exit("Bad kex value");
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64 }
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65 break;
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66 #endif
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67 #if DROPBEAR_ECDH
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68 case DROPBEAR_KEX_ECDH:
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69 #endif
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70 #if DROPBEAR_CURVE25519
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71 case DROPBEAR_KEX_CURVE25519:
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72 #endif
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73 #if DROPBEAR_ECDH || DROPBEAR_CURVE25519
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74 ecdh_qs = buf_getstringbuf(ses.payload);
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75 break;
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76 #endif
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77 }
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78 if (ses.payload->pos != ses.payload->len) {
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79 dropbear_exit("Bad kex value");
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80 }
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81
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82 send_msg_kexdh_reply(&dh_e, ecdh_qs);
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84 mp_clear(&dh_e);
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85 if (ecdh_qs) {
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86 buf_free(ecdh_qs);
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87 ecdh_qs = NULL;
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88 }
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89
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90 send_msg_newkeys();
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91
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92 #if DROPBEAR_EXT_INFO
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93 /* Only send it following the first newkeys */
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94 if (!ses.kexstate.donesecondkex && ses.allow_ext_info) {
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95 send_msg_ext_info();
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96 }
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97 #endif
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98
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99 ses.requirenext = SSH_MSG_NEWKEYS;
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100 TRACE(("leave recv_msg_kexdh_init"))
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101 }
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102
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103
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104 #if DROPBEAR_DELAY_HOSTKEY
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105
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106 static void svr_ensure_hostkey() {
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107
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108 const char* fn = NULL;
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109 enum signkey_type type = ses.newkeys->algo_hostkey;
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110 void **hostkey = signkey_key_ptr(svr_opts.hostkey, type);
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111 int ret = DROPBEAR_FAILURE;
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112
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113 if (hostkey && *hostkey) {
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114 return;
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115 }
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116
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117 switch (type)
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118 {
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119 #if DROPBEAR_RSA
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120 case DROPBEAR_SIGNKEY_RSA:
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121 fn = RSA_PRIV_FILENAME;
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122 break;
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123 #endif
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124 #if DROPBEAR_DSS
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125 case DROPBEAR_SIGNKEY_DSS:
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126 fn = DSS_PRIV_FILENAME;
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127 break;
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128 #endif
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129 #if DROPBEAR_ECDSA
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130 case DROPBEAR_SIGNKEY_ECDSA_NISTP256:
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131 case DROPBEAR_SIGNKEY_ECDSA_NISTP384:
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132 case DROPBEAR_SIGNKEY_ECDSA_NISTP521:
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133 fn = ECDSA_PRIV_FILENAME;
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134 break;
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135 #endif
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136 #if DROPBEAR_ED25519
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137 case DROPBEAR_SIGNKEY_ED25519:
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138 fn = ED25519_PRIV_FILENAME;
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139 break;
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140 #endif
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141 default:
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142 dropbear_assert(0);
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parents: 801
diff changeset
143 }
b298bb438625 refactor key generation, make it generate as required.
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
144
b298bb438625 refactor key generation, make it generate as required.
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
145 if (readhostkey(fn, svr_opts.hostkey, &type) == DROPBEAR_SUCCESS) {
b298bb438625 refactor key generation, make it generate as required.
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
146 return;
b298bb438625 refactor key generation, make it generate as required.
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
147 }
b298bb438625 refactor key generation, make it generate as required.
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
148
1329
185c14fa504d Use atomic key generation in all cases
Matt Johnston <matt@ucc.asn.au>
parents: 1295
diff changeset
149 if (signkey_generate(type, 0, fn, 1) == DROPBEAR_FAILURE) {
846
b298bb438625 refactor key generation, make it generate as required.
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
150 goto out;
b298bb438625 refactor key generation, make it generate as required.
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
151 }
1329
185c14fa504d Use atomic key generation in all cases
Matt Johnston <matt@ucc.asn.au>
parents: 1295
diff changeset
152
846
b298bb438625 refactor key generation, make it generate as required.
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
153 ret = readhostkey(fn, svr_opts.hostkey, &type);
b298bb438625 refactor key generation, make it generate as required.
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
154
875
6c7a15668d5a Log when generating a hostkey
Matt Johnston <matt@ucc.asn.au>
parents: 858
diff changeset
155 if (ret == DROPBEAR_SUCCESS) {
6c7a15668d5a Log when generating a hostkey
Matt Johnston <matt@ucc.asn.au>
parents: 858
diff changeset
156 char *fp = NULL;
6c7a15668d5a Log when generating a hostkey
Matt Johnston <matt@ucc.asn.au>
parents: 858
diff changeset
157 unsigned int len;
6c7a15668d5a Log when generating a hostkey
Matt Johnston <matt@ucc.asn.au>
parents: 858
diff changeset
158 buffer *key_buf = buf_new(MAX_PUBKEY_SIZE);
6c7a15668d5a Log when generating a hostkey
Matt Johnston <matt@ucc.asn.au>
parents: 858
diff changeset
159 buf_put_pub_key(key_buf, svr_opts.hostkey, type);
6c7a15668d5a Log when generating a hostkey
Matt Johnston <matt@ucc.asn.au>
parents: 858
diff changeset
160 buf_setpos(key_buf, 4);
6c7a15668d5a Log when generating a hostkey
Matt Johnston <matt@ucc.asn.au>
parents: 858
diff changeset
161 len = key_buf->len - key_buf->pos;
6c7a15668d5a Log when generating a hostkey
Matt Johnston <matt@ucc.asn.au>
parents: 858
diff changeset
162 fp = sign_key_fingerprint(buf_getptr(key_buf, len), len);
6c7a15668d5a Log when generating a hostkey
Matt Johnston <matt@ucc.asn.au>
parents: 858
diff changeset
163 dropbear_log(LOG_INFO, "Generated hostkey %s, fingerprint is %s",
6c7a15668d5a Log when generating a hostkey
Matt Johnston <matt@ucc.asn.au>
parents: 858
diff changeset
164 fn, fp);
6c7a15668d5a Log when generating a hostkey
Matt Johnston <matt@ucc.asn.au>
parents: 858
diff changeset
165 m_free(fp);
6c7a15668d5a Log when generating a hostkey
Matt Johnston <matt@ucc.asn.au>
parents: 858
diff changeset
166 buf_free(key_buf);
6c7a15668d5a Log when generating a hostkey
Matt Johnston <matt@ucc.asn.au>
parents: 858
diff changeset
167 }
6c7a15668d5a Log when generating a hostkey
Matt Johnston <matt@ucc.asn.au>
parents: 858
diff changeset
168
846
b298bb438625 refactor key generation, make it generate as required.
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
169 out:
b298bb438625 refactor key generation, make it generate as required.
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
170 if (ret == DROPBEAR_FAILURE)
b298bb438625 refactor key generation, make it generate as required.
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
171 {
847
f4bb964c8678 Add '-R' for delayed hostkey option
Matt Johnston <matt@ucc.asn.au>
parents: 846
diff changeset
172 dropbear_exit("Couldn't read or generate hostkey %s", fn);
846
b298bb438625 refactor key generation, make it generate as required.
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
173 }
b298bb438625 refactor key generation, make it generate as required.
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
174 }
847
f4bb964c8678 Add '-R' for delayed hostkey option
Matt Johnston <matt@ucc.asn.au>
parents: 846
diff changeset
175 #endif
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
176
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
177 /* Generate our side of the diffie-hellman key exchange value (dh_f), and
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
178 * calculate the session key using the diffie-hellman algorithm. Following
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
179 * that, the session hash is calculated, and signed with RSA or DSS. The
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
180 * result is sent to the client.
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
181 *
755
b07eb3dc23ec refactor kexdh code a bit, start working on ecdh etc
Matt Johnston <matt@ucc.asn.au>
parents: 603
diff changeset
182 * See the transport RFC4253 section 8 for details
b07eb3dc23ec refactor kexdh code a bit, start working on ecdh etc
Matt Johnston <matt@ucc.asn.au>
parents: 603
diff changeset
183 * or RFC5656 section 4 for elliptic curve variant. */
b07eb3dc23ec refactor kexdh code a bit, start working on ecdh etc
Matt Johnston <matt@ucc.asn.au>
parents: 603
diff changeset
184 static void send_msg_kexdh_reply(mp_int *dh_e, buffer *ecdh_qs) {
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 84
diff changeset
185 TRACE(("enter send_msg_kexdh_reply"))
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
186
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
187 /* we can start creating the kexdh_reply packet */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
188 CHECKCLEARTOWRITE();
847
f4bb964c8678 Add '-R' for delayed hostkey option
Matt Johnston <matt@ucc.asn.au>
parents: 846
diff changeset
189
1295
750ec4ec4cbe Convert #ifdef to #if, other build changes
Matt Johnston <matt@ucc.asn.au>
parents: 1294
diff changeset
190 #if DROPBEAR_DELAY_HOSTKEY
847
f4bb964c8678 Add '-R' for delayed hostkey option
Matt Johnston <matt@ucc.asn.au>
parents: 846
diff changeset
191 if (svr_opts.delay_hostkey)
f4bb964c8678 Add '-R' for delayed hostkey option
Matt Johnston <matt@ucc.asn.au>
parents: 846
diff changeset
192 {
f4bb964c8678 Add '-R' for delayed hostkey option
Matt Johnston <matt@ucc.asn.au>
parents: 846
diff changeset
193 svr_ensure_hostkey();
f4bb964c8678 Add '-R' for delayed hostkey option
Matt Johnston <matt@ucc.asn.au>
parents: 846
diff changeset
194 }
f4bb964c8678 Add '-R' for delayed hostkey option
Matt Johnston <matt@ucc.asn.au>
parents: 846
diff changeset
195 #endif
846
b298bb438625 refactor key generation, make it generate as required.
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
196
1558
2f64cb3d3007 - #if not #ifdef for DROPBEAR_FUZZ
Matt Johnston <matt@ucc.asn.au>
parents: 1456
diff changeset
197 #if DROPBEAR_FUZZ
1456
a90fdd2d2ed8 add fuzzer-preauth_nomaths
Matt Johnston <matt@ucc.asn.au>
parents: 1343
diff changeset
198 if (fuzz.fuzzing && fuzz.skip_kexmaths) {
a90fdd2d2ed8 add fuzzer-preauth_nomaths
Matt Johnston <matt@ucc.asn.au>
parents: 1343
diff changeset
199 fuzz_fake_send_kexdh_reply();
a90fdd2d2ed8 add fuzzer-preauth_nomaths
Matt Johnston <matt@ucc.asn.au>
parents: 1343
diff changeset
200 return;
a90fdd2d2ed8 add fuzzer-preauth_nomaths
Matt Johnston <matt@ucc.asn.au>
parents: 1343
diff changeset
201 }
a90fdd2d2ed8 add fuzzer-preauth_nomaths
Matt Johnston <matt@ucc.asn.au>
parents: 1343
diff changeset
202 #endif
a90fdd2d2ed8 add fuzzer-preauth_nomaths
Matt Johnston <matt@ucc.asn.au>
parents: 1343
diff changeset
203
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
204 buf_putbyte(ses.writepayload, SSH_MSG_KEXDH_REPLY);
24
469950e86d0f switching to global vars
Matt Johnston <matt@ucc.asn.au>
parents: 22
diff changeset
205 buf_put_pub_key(ses.writepayload, svr_opts.hostkey,
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
206 ses.newkeys->algo_hostkey);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
207
848
6c69e7df3621 curve25519
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
208 switch (ses.newkeys->algo_kex->mode) {
1295
750ec4ec4cbe Convert #ifdef to #if, other build changes
Matt Johnston <matt@ucc.asn.au>
parents: 1294
diff changeset
209 #if DROPBEAR_NORMAL_DH
848
6c69e7df3621 curve25519
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
210 case DROPBEAR_KEX_NORMAL_DH:
6c69e7df3621 curve25519
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
211 {
6c69e7df3621 curve25519
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
212 struct kex_dh_param * dh_param = gen_kexdh_param();
6c69e7df3621 curve25519
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
213 kexdh_comb_key(dh_param, dh_e, svr_opts.hostkey);
755
b07eb3dc23ec refactor kexdh code a bit, start working on ecdh etc
Matt Johnston <matt@ucc.asn.au>
parents: 603
diff changeset
214
848
6c69e7df3621 curve25519
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
215 /* put f */
6c69e7df3621 curve25519
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
216 buf_putmpint(ses.writepayload, &dh_param->pub);
6c69e7df3621 curve25519
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
217 free_kexdh_param(dh_param);
6c69e7df3621 curve25519
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
218 }
6c69e7df3621 curve25519
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
219 break;
1294
56aba7dedbea options for disabling "normal" DH
Matt Johnston <matt@ucc.asn.au>
parents: 1260
diff changeset
220 #endif
1295
750ec4ec4cbe Convert #ifdef to #if, other build changes
Matt Johnston <matt@ucc.asn.au>
parents: 1294
diff changeset
221 #if DROPBEAR_ECDH
848
6c69e7df3621 curve25519
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
222 case DROPBEAR_KEX_ECDH:
6c69e7df3621 curve25519
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
223 {
6c69e7df3621 curve25519
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
224 struct kex_ecdh_param *ecdh_param = gen_kexecdh_param();
6c69e7df3621 curve25519
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
225 kexecdh_comb_key(ecdh_param, ecdh_qs, svr_opts.hostkey);
755
b07eb3dc23ec refactor kexdh code a bit, start working on ecdh etc
Matt Johnston <matt@ucc.asn.au>
parents: 603
diff changeset
226
848
6c69e7df3621 curve25519
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
227 buf_put_ecc_raw_pubkey_string(ses.writepayload, &ecdh_param->key);
6c69e7df3621 curve25519
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
228 free_kexecdh_param(ecdh_param);
6c69e7df3621 curve25519
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
229 }
1294
56aba7dedbea options for disabling "normal" DH
Matt Johnston <matt@ucc.asn.au>
parents: 1260
diff changeset
230 break;
755
b07eb3dc23ec refactor kexdh code a bit, start working on ecdh etc
Matt Johnston <matt@ucc.asn.au>
parents: 603
diff changeset
231 #endif
1295
750ec4ec4cbe Convert #ifdef to #if, other build changes
Matt Johnston <matt@ucc.asn.au>
parents: 1294
diff changeset
232 #if DROPBEAR_CURVE25519
848
6c69e7df3621 curve25519
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
233 case DROPBEAR_KEX_CURVE25519:
6c69e7df3621 curve25519
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
234 {
849
Matt Johnston <matt@ucc.asn.au>
parents: 848 847
diff changeset
235 struct kex_curve25519_param *param = gen_kexcurve25519_param();
848
6c69e7df3621 curve25519
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
236 kexcurve25519_comb_key(param, ecdh_qs, svr_opts.hostkey);
1659
d32bcb5c557d Add Ed25519 support (#91)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents: 1558
diff changeset
237
d32bcb5c557d Add Ed25519 support (#91)
Vladislav Grishenko <themiron@users.noreply.github.com>
parents: 1558
diff changeset
238 buf_putstring(ses.writepayload, param->pub, CURVE25519_LEN);
848
6c69e7df3621 curve25519
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
239 free_kexcurve25519_param(param);
6c69e7df3621 curve25519
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
240 }
1294
56aba7dedbea options for disabling "normal" DH
Matt Johnston <matt@ucc.asn.au>
parents: 1260
diff changeset
241 break;
848
6c69e7df3621 curve25519
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
242 #endif
755
b07eb3dc23ec refactor kexdh code a bit, start working on ecdh etc
Matt Johnston <matt@ucc.asn.au>
parents: 603
diff changeset
243 }
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
244
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
245 /* calc the signature */
24
469950e86d0f switching to global vars
Matt Johnston <matt@ucc.asn.au>
parents: 22
diff changeset
246 buf_put_sign(ses.writepayload, svr_opts.hostkey,
1674
ba6fc7afe1c5 use sigtype where appropriate
Matt Johnston <matt@ucc.asn.au>
parents: 1659
diff changeset
247 ses.newkeys->algo_signature, ses.hash);
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
248
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
249 /* the SSH_MSG_KEXDH_REPLY is done */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
250 encrypt_packet();
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
251
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 84
diff changeset
252 TRACE(("leave send_msg_kexdh_reply"))
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
253 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
254
1681
435cfb9ec96e send and handle SSH_MSG_EXT_INFO only at the correct point
Matt Johnston <matt@ucc.asn.au>
parents: 1678
diff changeset
255 #if DROPBEAR_EXT_INFO
1678
4b4cfc92c5b7 Make server send SSH_MSG_EXT_INFO
Matt Johnston <matt@ucc.asn.au>
parents: 1674
diff changeset
256 /* Only used for server-sig-algs on the server side */
1681
435cfb9ec96e send and handle SSH_MSG_EXT_INFO only at the correct point
Matt Johnston <matt@ucc.asn.au>
parents: 1678
diff changeset
257 static void send_msg_ext_info(void) {
1678
4b4cfc92c5b7 Make server send SSH_MSG_EXT_INFO
Matt Johnston <matt@ucc.asn.au>
parents: 1674
diff changeset
258 TRACE(("enter send_msg_ext_info"))
4b4cfc92c5b7 Make server send SSH_MSG_EXT_INFO
Matt Johnston <matt@ucc.asn.au>
parents: 1674
diff changeset
259
4b4cfc92c5b7 Make server send SSH_MSG_EXT_INFO
Matt Johnston <matt@ucc.asn.au>
parents: 1674
diff changeset
260 buf_putbyte(ses.writepayload, SSH_MSG_EXT_INFO);
4b4cfc92c5b7 Make server send SSH_MSG_EXT_INFO
Matt Johnston <matt@ucc.asn.au>
parents: 1674
diff changeset
261 /* nr-extensions */
4b4cfc92c5b7 Make server send SSH_MSG_EXT_INFO
Matt Johnston <matt@ucc.asn.au>
parents: 1674
diff changeset
262 buf_putint(ses.writepayload, 1);
4b4cfc92c5b7 Make server send SSH_MSG_EXT_INFO
Matt Johnston <matt@ucc.asn.au>
parents: 1674
diff changeset
263
4b4cfc92c5b7 Make server send SSH_MSG_EXT_INFO
Matt Johnston <matt@ucc.asn.au>
parents: 1674
diff changeset
264 buf_putstring(ses.writepayload, SSH_SERVER_SIG_ALGS, strlen(SSH_SERVER_SIG_ALGS));
4b4cfc92c5b7 Make server send SSH_MSG_EXT_INFO
Matt Johnston <matt@ucc.asn.au>
parents: 1674
diff changeset
265 buf_put_algolist_all(ses.writepayload, sigalgs, 1);
4b4cfc92c5b7 Make server send SSH_MSG_EXT_INFO
Matt Johnston <matt@ucc.asn.au>
parents: 1674
diff changeset
266
4b4cfc92c5b7 Make server send SSH_MSG_EXT_INFO
Matt Johnston <matt@ucc.asn.au>
parents: 1674
diff changeset
267 encrypt_packet();
4b4cfc92c5b7 Make server send SSH_MSG_EXT_INFO
Matt Johnston <matt@ucc.asn.au>
parents: 1674
diff changeset
268
4b4cfc92c5b7 Make server send SSH_MSG_EXT_INFO
Matt Johnston <matt@ucc.asn.au>
parents: 1674
diff changeset
269 TRACE(("leave send_msg_ext_info"))
4b4cfc92c5b7 Make server send SSH_MSG_EXT_INFO
Matt Johnston <matt@ucc.asn.au>
parents: 1674
diff changeset
270 }
1681
435cfb9ec96e send and handle SSH_MSG_EXT_INFO only at the correct point
Matt Johnston <matt@ucc.asn.au>
parents: 1678
diff changeset
271 #endif