annotate dbutil.c @ 225:ca7e76d981d9 agent-client

- progress towards client agent forwarding (incomplete and does not compile)
author Matt Johnston <matt@ucc.asn.au>
date Mon, 18 Jul 2005 14:32:52 +0000
parents 65585699d980
children 79bf1023cf11
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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 * All rights reserved.
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6 *
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7 * Permission is hereby granted, free of charge, to any person obtaining a copy
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8 * of this software and associated documentation files (the "Software"), to deal
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9 * in the Software without restriction, including without limitation the rights
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10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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11 * copies of the Software, and to permit persons to whom the Software is
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12 * furnished to do so, subject to the following conditions:
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13 *
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14 * The above copyright notice and this permission notice shall be included in
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15 * all copies or substantial portions of the Software.
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16 *
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17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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20 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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23 * SOFTWARE.
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24 *
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25 * strlcat() is copyright as follows:
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26 * Copyright (c) 1998 Todd C. Miller <[email protected]>
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27 * All rights reserved.
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28 *
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29 * Redistribution and use in source and binary forms, with or without
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30 * modification, are permitted provided that the following conditions
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31 * are met:
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32 * 1. Redistributions of source code must retain the above copyright
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33 * notice, this list of conditions and the following disclaimer.
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34 * 2. Redistributions in binary form must reproduce the above copyright
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35 * notice, this list of conditions and the following disclaimer in the
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36 * documentation and/or other materials provided with the distribution.
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37 * 3. The name of the author may not be used to endorse or promote products
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38 * derived from this software without specific prior written permission.
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39 *
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40 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
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41 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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42 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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43 * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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44 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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45 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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46 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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47 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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48 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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49 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
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50
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51 #include "includes.h"
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52 #include "dbutil.h"
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53 #include "buffer.h"
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54 #include "session.h"
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55 #include "atomicio.h"
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56
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57 #define MAX_FMT 100
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58
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59 static void generic_dropbear_exit(int exitcode, const char* format,
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60 va_list param);
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61 static void generic_dropbear_log(int priority, const char* format,
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62 va_list param);
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63
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64 void (*_dropbear_exit)(int exitcode, const char* format, va_list param)
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65 = generic_dropbear_exit;
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66 void (*_dropbear_log)(int priority, const char* format, va_list param)
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67 = generic_dropbear_log;
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69 #ifdef DEBUG_TRACE
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70 int debug_trace = 0;
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71 #endif
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72
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73 #ifndef DISABLE_SYSLOG
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74 void startsyslog() {
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76 openlog(PROGNAME, LOG_PID, LOG_AUTHPRIV);
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77
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78 }
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79 #endif /* DISABLE_SYSLOG */
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81 /* the "format" string must be <= 100 characters */
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82 void dropbear_close(const char* format, ...) {
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83
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84 va_list param;
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85
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86 va_start(param, format);
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87 _dropbear_exit(EXIT_SUCCESS, format, param);
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88 va_end(param);
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89
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90 }
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91
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92 void dropbear_exit(const char* format, ...) {
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93
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94 va_list param;
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95
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96 va_start(param, format);
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97 _dropbear_exit(EXIT_FAILURE, format, param);
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98 va_end(param);
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99 }
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100
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101 static void generic_dropbear_exit(int exitcode, const char* format,
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102 va_list param) {
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103
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104 char fmtbuf[300];
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105
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106 snprintf(fmtbuf, sizeof(fmtbuf), "Exited: %s", format);
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107
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108 _dropbear_log(LOG_INFO, fmtbuf, param);
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109
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110 exit(exitcode);
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111 }
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112
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113 static void generic_dropbear_log(int UNUSED(priority), const char* format,
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114 va_list param) {
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115
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116 char printbuf[1024];
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117
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118 vsnprintf(printbuf, sizeof(printbuf), format, param);
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119
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120 fprintf(stderr, "%s\n", printbuf);
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121
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122 }
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123
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124 /* this is what can be called to write arbitrary log messages */
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125 void dropbear_log(int priority, const char* format, ...) {
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126
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127 va_list param;
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128
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129 va_start(param, format);
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130 _dropbear_log(priority, format, param);
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131 va_end(param);
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132 }
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133
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134
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135 #ifdef DEBUG_TRACE
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136 void dropbear_trace(const char* format, ...) {
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137
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138 va_list param;
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139
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140 if (!debug_trace) {
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141 return;
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142 }
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143
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144 va_start(param, format);
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145 fprintf(stderr, "TRACE: ");
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146 vfprintf(stderr, format, param);
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147 fprintf(stderr, "\n");
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148 va_end(param);
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149 }
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150 #endif /* DEBUG_TRACE */
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151
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152 /* Listen on address:port. Unless address is NULL, in which case listen on
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153 * everything. If called with address == "", we'll listen on localhost/loopback.
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154 * Returns the number of sockets bound on success, or -1 on failure. On
62
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155 * failure, if errstring wasn't NULL, it'll be a newly malloced error
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diff changeset
156 * string.*/
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diff changeset
157 int dropbear_listen(const char* address, const char* port,
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diff changeset
158 int *socks, unsigned int sockcount, char **errstring, int *maxfd) {
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diff changeset
159
70
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree
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diff changeset
160 struct addrinfo hints, *res = NULL, *res0 = NULL;
62
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diff changeset
161 int err;
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diff changeset
162 unsigned int nsock;
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diff changeset
163 struct linger linger;
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diff changeset
164 int val;
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diff changeset
165 int sock;
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diff changeset
166
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
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parents: 161
diff changeset
167 TRACE(("enter dropbear_listen"))
62
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diff changeset
168
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diff changeset
169 memset(&hints, 0, sizeof(hints));
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diff changeset
170 hints.ai_family = AF_UNSPEC; /* TODO: let them flag v4 only etc */
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diff changeset
171 hints.ai_socktype = SOCK_STREAM;
63
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diff changeset
172
dcc43965928f - A nice cleaner structure for tcp (acceptor) forwarding.
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diff changeset
173 if (address && address[0] == '\0') {
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
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diff changeset
174 TRACE(("dropbear_listen: local loopback"))
63
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diff changeset
175 address = NULL;
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diff changeset
176 } else {
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
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diff changeset
177 TRACE(("dropbear_listen: not local loopback"))
63
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diff changeset
178 hints.ai_flags = AI_PASSIVE;
dcc43965928f - A nice cleaner structure for tcp (acceptor) forwarding.
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diff changeset
179 }
62
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diff changeset
180 err = getaddrinfo(address, port, &hints, &res0);
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181
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182 if (err) {
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183 if (errstring != NULL && *errstring == NULL) {
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diff changeset
184 int len;
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185 len = 20 + strlen(gai_strerror(err));
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186 *errstring = (char*)m_malloc(len);
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diff changeset
187 snprintf(*errstring, len, "Error resolving: %s", gai_strerror(err));
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188 }
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
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diff changeset
189 TRACE(("leave dropbear_listen: failed resolving"))
62
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190 return -1;
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191 }
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192
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diff changeset
193
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194 nsock = 0;
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195 for (res = res0; res != NULL && nsock < sockcount;
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diff changeset
196 res = res->ai_next) {
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197
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diff changeset
198 /* Get a socket */
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diff changeset
199 socks[nsock] = socket(res->ai_family, res->ai_socktype,
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diff changeset
200 res->ai_protocol);
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diff changeset
201
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diff changeset
202 sock = socks[nsock]; /* For clarity */
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diff changeset
203
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diff changeset
204 if (sock < 0) {
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diff changeset
205 err = errno;
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
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diff changeset
206 TRACE(("socket() failed"))
62
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diff changeset
207 continue;
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diff changeset
208 }
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diff changeset
209
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diff changeset
210 /* Various useful socket options */
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diff changeset
211 val = 1;
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diff changeset
212 /* set to reuse, quick timeout */
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diff changeset
213 setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (void*) &val, sizeof(val));
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diff changeset
214 linger.l_onoff = 1;
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diff changeset
215 linger.l_linger = 5;
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diff changeset
216 setsockopt(sock, SOL_SOCKET, SO_LINGER, (void*)&linger, sizeof(linger));
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diff changeset
217
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diff changeset
218 /* disable nagle */
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diff changeset
219 setsockopt(sock, IPPROTO_TCP, TCP_NODELAY, (void*)&val, sizeof(val));
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diff changeset
220
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diff changeset
221 if (bind(sock, res->ai_addr, res->ai_addrlen) < 0) {
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diff changeset
222 err = errno;
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diff changeset
223 close(sock);
165
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diff changeset
224 TRACE(("bind(%s) failed", port))
62
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diff changeset
225 continue;
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diff changeset
226 }
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diff changeset
227
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diff changeset
228 if (listen(sock, 20) < 0) {
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diff changeset
229 err = errno;
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diff changeset
230 close(sock);
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
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diff changeset
231 TRACE(("listen() failed"))
62
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diff changeset
232 continue;
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diff changeset
233 }
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diff changeset
234
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diff changeset
235 *maxfd = MAX(*maxfd, sock);
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diff changeset
236
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diff changeset
237 nsock++;
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diff changeset
238 }
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diff changeset
239
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diff changeset
240 if (nsock == 0) {
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diff changeset
241 if (errstring != NULL && *errstring == NULL) {
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diff changeset
242 int len;
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diff changeset
243 len = 20 + strlen(strerror(err));
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diff changeset
244 *errstring = (char*)m_malloc(len);
64
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
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diff changeset
245 snprintf(*errstring, len, "Error listening: %s", strerror(err));
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
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diff changeset
246 TRACE(("leave dropbear_listen: failure, %s", strerror(err)))
62
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diff changeset
247 return -1;
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diff changeset
248 }
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diff changeset
249 }
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diff changeset
250
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
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diff changeset
251 TRACE(("leave dropbear_listen: success, %d socks bound", nsock))
62
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diff changeset
252 return nsock;
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diff changeset
253 }
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diff changeset
254
225
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diff changeset
255 /* Connect to a given unix socket. The socket is not non-blocking */
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parents: 198
diff changeset
256 #ifdef ENABLE_CONNECT_UNIX
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diff changeset
257 int connect_unix(const char* addr)
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parents: 198
diff changeset
258 {
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diff changeset
259 struct sockaddr_un egdsock;
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parents: 198
diff changeset
260 int fd = -1;
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diff changeset
261
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diff changeset
262 memset((void*)&egdsock, 0x0, sizeof(egdsock));
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parents: 198
diff changeset
263 egdsock.sun_family = AF_UNIX;
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parents: 198
diff changeset
264 strlcpy(egdsock.sun_path, addr, sizeof(egdsock.sun_path));
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parents: 198
diff changeset
265
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diff changeset
266 fd = socket(PF_UNIX, SOCK_STREAM, 0);
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diff changeset
267
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diff changeset
268 return fd;
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parents: 198
diff changeset
269 }
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diff changeset
270 #endif
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diff changeset
271
26
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diff changeset
272 /* Connect via TCP to a host. Connection will try ipv4 or ipv6, will
62
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diff changeset
273 * return immediately if nonblocking is set. On failure, if errstring
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diff changeset
274 * wasn't null, it will be a newly malloced error message */
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diff changeset
275
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diff changeset
276 /* TODO: maxfd */
26
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diff changeset
277 int connect_remote(const char* remotehost, const char* remoteport,
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diff changeset
278 int nonblocking, char ** errstring) {
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diff changeset
279
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diff changeset
280 struct addrinfo *res0 = NULL, *res = NULL, hints;
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diff changeset
281 int sock;
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diff changeset
282 int err;
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diff changeset
283
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
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parents: 161
diff changeset
284 TRACE(("enter connect_remote"))
26
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diff changeset
285
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diff changeset
286 if (errstring != NULL) {
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diff changeset
287 *errstring = NULL;
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diff changeset
288 }
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diff changeset
289
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diff changeset
290 memset(&hints, 0, sizeof(hints));
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diff changeset
291 hints.ai_socktype = SOCK_STREAM;
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diff changeset
292 hints.ai_family = PF_UNSPEC;
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diff changeset
293
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diff changeset
294 err = getaddrinfo(remotehost, remoteport, &hints, &res0);
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diff changeset
295 if (err) {
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diff changeset
296 if (errstring != NULL && *errstring == NULL) {
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diff changeset
297 int len;
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diff changeset
298 len = 20 + strlen(gai_strerror(err));
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diff changeset
299 *errstring = (char*)m_malloc(len);
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diff changeset
300 snprintf(*errstring, len, "Error resolving: %s", gai_strerror(err));
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diff changeset
301 }
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
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parents: 161
diff changeset
302 TRACE(("Error resolving: %s", gai_strerror(err)))
26
0969767bca0d snapshot of stuff
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diff changeset
303 return -1;
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diff changeset
304 }
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diff changeset
305
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diff changeset
306 sock = -1;
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diff changeset
307 err = EADDRNOTAVAIL;
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diff changeset
308 for (res = res0; res; res = res->ai_next) {
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diff changeset
309
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diff changeset
310 sock = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
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diff changeset
311 if (sock < 0) {
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diff changeset
312 err = errno;
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diff changeset
313 continue;
0969767bca0d snapshot of stuff
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parents: 11
diff changeset
314 }
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diff changeset
315
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diff changeset
316 if (nonblocking) {
225
ca7e76d981d9 - progress towards client agent forwarding
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parents: 198
diff changeset
317 setnonblocking(sock);
26
0969767bca0d snapshot of stuff
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diff changeset
318 }
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diff changeset
319
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diff changeset
320 if (connect(sock, res->ai_addr, res->ai_addrlen) < 0) {
70
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree
Matt Johnston <matt@ucc.asn.au>
parents: 68
diff changeset
321 if (errno == EINPROGRESS && nonblocking) {
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
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parents: 161
diff changeset
322 TRACE(("Connect in progress"))
26
0969767bca0d snapshot of stuff
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parents: 11
diff changeset
323 break;
0969767bca0d snapshot of stuff
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parents: 11
diff changeset
324 } else {
0969767bca0d snapshot of stuff
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parents: 11
diff changeset
325 err = errno;
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diff changeset
326 close(sock);
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diff changeset
327 sock = -1;
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parents: 11
diff changeset
328 continue;
0969767bca0d snapshot of stuff
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parents: 11
diff changeset
329 }
0969767bca0d snapshot of stuff
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diff changeset
330 }
0969767bca0d snapshot of stuff
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parents: 11
diff changeset
331
0969767bca0d snapshot of stuff
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parents: 11
diff changeset
332 break; /* Success */
0969767bca0d snapshot of stuff
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parents: 11
diff changeset
333 }
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parents: 11
diff changeset
334
70
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree
Matt Johnston <matt@ucc.asn.au>
parents: 68
diff changeset
335 if (sock < 0 && !(errno == EINPROGRESS && nonblocking)) {
26
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parents: 11
diff changeset
336 /* Failed */
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parents: 11
diff changeset
337 if (errstring != NULL && *errstring == NULL) {
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parents: 11
diff changeset
338 int len;
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diff changeset
339 len = 20 + strlen(strerror(err));
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parents: 11
diff changeset
340 *errstring = (char*)m_malloc(len);
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parents: 11
diff changeset
341 snprintf(*errstring, len, "Error connecting: %s", strerror(err));
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parents: 11
diff changeset
342 }
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
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parents: 161
diff changeset
343 TRACE(("Error connecting: %s", strerror(err)))
26
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parents: 11
diff changeset
344 } else {
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diff changeset
345 /* Success */
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diff changeset
346 /* (err is used as a dummy var here) */
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parents: 11
diff changeset
347 setsockopt(sock, IPPROTO_TCP, TCP_NODELAY, (void*)&err, sizeof(err));
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parents: 11
diff changeset
348 }
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parents: 11
diff changeset
349
0969767bca0d snapshot of stuff
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diff changeset
350 freeaddrinfo(res0);
62
20563735e8b5 just checkpointing
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parents: 51
diff changeset
351 if (sock > 0 && errstring != NULL && *errstring != NULL) {
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parents: 51
diff changeset
352 m_free(*errstring);
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parents: 51
diff changeset
353 }
26
0969767bca0d snapshot of stuff
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parents: 11
diff changeset
354
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
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parents: 161
diff changeset
355 TRACE(("leave connect_remote: sock %d\n", sock))
26
0969767bca0d snapshot of stuff
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parents: 11
diff changeset
356 return sock;
0969767bca0d snapshot of stuff
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parents: 11
diff changeset
357 }
0969767bca0d snapshot of stuff
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diff changeset
358
4
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parents:
diff changeset
359 /* Return a string representation of the socket address passed. The return
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parents:
diff changeset
360 * value is allocated with malloc() */
62
20563735e8b5 just checkpointing
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parents: 51
diff changeset
361 unsigned char * getaddrstring(struct sockaddr_storage* addr, int withport) {
4
fe6bca95afa7 Makefile.in contains updated files required
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parents:
diff changeset
362
62
20563735e8b5 just checkpointing
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parents: 51
diff changeset
363 char hbuf[NI_MAXHOST], sbuf[NI_MAXSERV];
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Matt Johnston <matt@ucc.asn.au>
parents: 51
diff changeset
364 char *retstring = NULL;
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parents: 51
diff changeset
365 int ret;
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parents: 51
diff changeset
366 unsigned int len;
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
367
62
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents: 51
diff changeset
368 len = sizeof(struct sockaddr_storage);
160
7ceceb46d655 Fix so that getnameinfo() is passed the address-specific structure size. This
Matt Johnston <matt@ucc.asn.au>
parents: 150
diff changeset
369 /* Some platforms such as Solaris 8 require that len is the length
7ceceb46d655 Fix so that getnameinfo() is passed the address-specific structure size. This
Matt Johnston <matt@ucc.asn.au>
parents: 150
diff changeset
370 * of the specific structure. */
7ceceb46d655 Fix so that getnameinfo() is passed the address-specific structure size. This
Matt Johnston <matt@ucc.asn.au>
parents: 150
diff changeset
371 if (addr->ss_family == AF_INET) {
7ceceb46d655 Fix so that getnameinfo() is passed the address-specific structure size. This
Matt Johnston <matt@ucc.asn.au>
parents: 150
diff changeset
372 len = sizeof(struct sockaddr_in);
7ceceb46d655 Fix so that getnameinfo() is passed the address-specific structure size. This
Matt Johnston <matt@ucc.asn.au>
parents: 150
diff changeset
373 }
7ceceb46d655 Fix so that getnameinfo() is passed the address-specific structure size. This
Matt Johnston <matt@ucc.asn.au>
parents: 150
diff changeset
374 #ifdef AF_INET6
7ceceb46d655 Fix so that getnameinfo() is passed the address-specific structure size. This
Matt Johnston <matt@ucc.asn.au>
parents: 150
diff changeset
375 if (addr->ss_family == AF_INET6) {
7ceceb46d655 Fix so that getnameinfo() is passed the address-specific structure size. This
Matt Johnston <matt@ucc.asn.au>
parents: 150
diff changeset
376 len = sizeof(struct sockaddr_in6);
7ceceb46d655 Fix so that getnameinfo() is passed the address-specific structure size. This
Matt Johnston <matt@ucc.asn.au>
parents: 150
diff changeset
377 }
7ceceb46d655 Fix so that getnameinfo() is passed the address-specific structure size. This
Matt Johnston <matt@ucc.asn.au>
parents: 150
diff changeset
378 #endif
62
20563735e8b5 just checkpointing
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parents: 51
diff changeset
379
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parents: 51
diff changeset
380 ret = getnameinfo((struct sockaddr*)addr, len, hbuf, sizeof(hbuf),
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents: 51
diff changeset
381 sbuf, sizeof(sbuf), NI_NUMERICSERV | NI_NUMERICHOST);
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
382
62
20563735e8b5 just checkpointing
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parents: 51
diff changeset
383 if (ret != 0) {
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents: 51
diff changeset
384 /* This is a fairly bad failure - it'll fallback to IP if it
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents: 51
diff changeset
385 * just can't resolve */
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Matt Johnston <matt@ucc.asn.au>
parents: 51
diff changeset
386 dropbear_exit("failed lookup (%d, %d)", ret, errno);
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents: 51
diff changeset
387 }
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
388
62
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents: 51
diff changeset
389 if (withport) {
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents: 51
diff changeset
390 len = strlen(hbuf) + 2 + strlen(sbuf);
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents: 51
diff changeset
391 retstring = (char*)m_malloc(len);
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents: 51
diff changeset
392 snprintf(retstring, len, "%s:%s", hbuf, sbuf);
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents: 51
diff changeset
393 } else {
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents: 51
diff changeset
394 retstring = m_strdup(hbuf);
20563735e8b5 just checkpointing
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parents: 51
diff changeset
395 }
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
396
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
397 return retstring;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
398
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
399 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
400
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
401 /* Get the hostname corresponding to the address addr. On failure, the IP
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
402 * address is returned. The return value is allocated with strdup() */
62
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents: 51
diff changeset
403 char* getaddrhostname(struct sockaddr_storage * addr) {
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
404
62
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents: 51
diff changeset
405 char hbuf[NI_MAXHOST];
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents: 51
diff changeset
406 char sbuf[NI_MAXSERV];
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents: 51
diff changeset
407 int ret;
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents: 51
diff changeset
408 unsigned int len;
172
3e49d8d18005 * respect DO_HOST_LOOKUP config option
Matt Johnston <matt@ucc.asn.au>
parents: 165
diff changeset
409 #ifdef DO_HOST_LOOKUP
3e49d8d18005 * respect DO_HOST_LOOKUP config option
Matt Johnston <matt@ucc.asn.au>
parents: 165
diff changeset
410 const int flags = NI_NUMERICSERV;
3e49d8d18005 * respect DO_HOST_LOOKUP config option
Matt Johnston <matt@ucc.asn.au>
parents: 165
diff changeset
411 #else
3e49d8d18005 * respect DO_HOST_LOOKUP config option
Matt Johnston <matt@ucc.asn.au>
parents: 165
diff changeset
412 const int flags = NI_NUMERICHOST | NI_NUMERICSERV;
3e49d8d18005 * respect DO_HOST_LOOKUP config option
Matt Johnston <matt@ucc.asn.au>
parents: 165
diff changeset
413 #endif
62
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents: 51
diff changeset
414
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents: 51
diff changeset
415 len = sizeof(struct sockaddr_storage);
160
7ceceb46d655 Fix so that getnameinfo() is passed the address-specific structure size. This
Matt Johnston <matt@ucc.asn.au>
parents: 150
diff changeset
416 /* Some platforms such as Solaris 8 require that len is the length
7ceceb46d655 Fix so that getnameinfo() is passed the address-specific structure size. This
Matt Johnston <matt@ucc.asn.au>
parents: 150
diff changeset
417 * of the specific structure. */
7ceceb46d655 Fix so that getnameinfo() is passed the address-specific structure size. This
Matt Johnston <matt@ucc.asn.au>
parents: 150
diff changeset
418 if (addr->ss_family == AF_INET) {
7ceceb46d655 Fix so that getnameinfo() is passed the address-specific structure size. This
Matt Johnston <matt@ucc.asn.au>
parents: 150
diff changeset
419 len = sizeof(struct sockaddr_in);
7ceceb46d655 Fix so that getnameinfo() is passed the address-specific structure size. This
Matt Johnston <matt@ucc.asn.au>
parents: 150
diff changeset
420 }
7ceceb46d655 Fix so that getnameinfo() is passed the address-specific structure size. This
Matt Johnston <matt@ucc.asn.au>
parents: 150
diff changeset
421 #ifdef AF_INET6
7ceceb46d655 Fix so that getnameinfo() is passed the address-specific structure size. This
Matt Johnston <matt@ucc.asn.au>
parents: 150
diff changeset
422 if (addr->ss_family == AF_INET6) {
7ceceb46d655 Fix so that getnameinfo() is passed the address-specific structure size. This
Matt Johnston <matt@ucc.asn.au>
parents: 150
diff changeset
423 len = sizeof(struct sockaddr_in6);
7ceceb46d655 Fix so that getnameinfo() is passed the address-specific structure size. This
Matt Johnston <matt@ucc.asn.au>
parents: 150
diff changeset
424 }
7ceceb46d655 Fix so that getnameinfo() is passed the address-specific structure size. This
Matt Johnston <matt@ucc.asn.au>
parents: 150
diff changeset
425 #endif
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
426
172
3e49d8d18005 * respect DO_HOST_LOOKUP config option
Matt Johnston <matt@ucc.asn.au>
parents: 165
diff changeset
427
62
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents: 51
diff changeset
428 ret = getnameinfo((struct sockaddr*)addr, len, hbuf, sizeof(hbuf),
172
3e49d8d18005 * respect DO_HOST_LOOKUP config option
Matt Johnston <matt@ucc.asn.au>
parents: 165
diff changeset
429 sbuf, sizeof(sbuf), flags);
62
20563735e8b5 just checkpointing
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parents: 51
diff changeset
430
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents: 51
diff changeset
431 if (ret != 0) {
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents: 51
diff changeset
432 /* On some systems (Darwin does it) we get EINTR from getnameinfo
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents: 51
diff changeset
433 * somehow. Eew. So we'll just return the IP, since that doesn't seem
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents: 51
diff changeset
434 * to exhibit that behaviour. */
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents: 51
diff changeset
435 return getaddrstring(addr, 0);
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
436 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
437
62
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents: 51
diff changeset
438 return m_strdup(hbuf);
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
439 }
62
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents: 51
diff changeset
440
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
441 #ifdef DEBUG_TRACE
198
65585699d980 * add a "label" argument to printhex()
Matt Johnston <matt@ucc.asn.au>
parents: 173
diff changeset
442 void printhex(const char * label, const unsigned char * buf, int len) {
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
443
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
444 int i;
fe6bca95afa7 Makefile.in contains updated files required
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parents:
diff changeset
445
198
65585699d980 * add a "label" argument to printhex()
Matt Johnston <matt@ucc.asn.au>
parents: 173
diff changeset
446 fprintf(stderr, "%s\n", label);
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
447 for (i = 0; i < len; i++) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
448 fprintf(stderr, "%02x", buf[i]);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
449 if (i % 16 == 15) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
450 fprintf(stderr, "\n");
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
451 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
452 else if (i % 2 == 1) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
453 fprintf(stderr, " ");
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
454 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
455 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
456 fprintf(stderr, "\n");
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
457 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
458 #endif
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
459
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
460 /* Strip all control characters from text (a null-terminated string), except
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
461 * for '\n', '\r' and '\t'.
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
462 * The result returned is a newly allocated string, this must be free()d after
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
463 * use */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
464 char * stripcontrol(const char * text) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
465
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
466 char * ret;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
467 int len, pos;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
468 int i;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
469
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
470 len = strlen(text);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
471 ret = m_malloc(len+1);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
472
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
473 pos = 0;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
474 for (i = 0; i < len; i++) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
475 if ((text[i] <= '~' && text[i] >= ' ') /* normal printable range */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
476 || text[i] == '\n' || text[i] == '\r' || text[i] == '\t') {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
477 ret[pos] = text[i];
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
478 pos++;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
479 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
480 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
481 ret[pos] = 0x0;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
482 return ret;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
483 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
484
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
485
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
486 /* reads the contents of filename into the buffer buf, from the current
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
487 * position, either to the end of the file, or the buffer being full.
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
488 * Returns DROPBEAR_SUCCESS or DROPBEAR_FAILURE */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
489 int buf_readfile(buffer* buf, const char* filename) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
490
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
491 int fd;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
492 int len;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
493 int maxlen;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
494
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
495 fd = open(filename, O_RDONLY);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
496
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
497 if (fd < 0) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
498 close(fd);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
499 return DROPBEAR_FAILURE;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
500 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
501
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
502 do {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
503 maxlen = buf->size - buf->pos;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
504 len = read(fd, buf_getwriteptr(buf, maxlen),
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
505 maxlen);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
506 buf_incrwritepos(buf, len);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
507 } while (len < maxlen && len > 0);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
508
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
509 close(fd);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
510 return DROPBEAR_SUCCESS;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
511 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
512
51
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 45
diff changeset
513 /* get a line from the file into buffer in the style expected for an
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 45
diff changeset
514 * authkeys file.
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 45
diff changeset
515 * Will return DROPBEAR_SUCCESS if data is read, or DROPBEAR_FAILURE on EOF.*/
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 45
diff changeset
516 /* Only used for ~/.ssh/known_hosts and ~/.ssh/authorized_keys */
68
eee77ac31ccc cleaning up the pubkey defines
Matt Johnston <matt@ucc.asn.au>
parents: 64
diff changeset
517 #if defined(DROPBEAR_CLIENT) || defined(ENABLE_SVR_PUBKEY_AUTH)
51
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 45
diff changeset
518 int buf_getline(buffer * line, FILE * authfile) {
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 45
diff changeset
519
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 45
diff changeset
520 int c = EOF;
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 45
diff changeset
521
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 161
diff changeset
522 TRACE(("enter buf_getline"))
51
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 45
diff changeset
523
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 45
diff changeset
524 buf_setpos(line, 0);
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 45
diff changeset
525 buf_setlen(line, 0);
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 45
diff changeset
526
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 45
diff changeset
527 while (line->pos < line->size) {
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 45
diff changeset
528
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 45
diff changeset
529 c = fgetc(authfile); /*getc() is weird with some uClibc systems*/
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 45
diff changeset
530 if (c == EOF || c == '\n' || c == '\r') {
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 45
diff changeset
531 goto out;
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 45
diff changeset
532 }
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 45
diff changeset
533
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 45
diff changeset
534 buf_putbyte(line, (unsigned char)c);
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 45
diff changeset
535 }
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 45
diff changeset
536
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 161
diff changeset
537 TRACE(("leave getauthline: line too long"))
51
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 45
diff changeset
538 /* We return success, but the line length will be zeroed - ie we just
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 45
diff changeset
539 * ignore that line */
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 45
diff changeset
540 buf_setlen(line, 0);
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 45
diff changeset
541
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 45
diff changeset
542 out:
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 45
diff changeset
543
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 45
diff changeset
544
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 45
diff changeset
545 /* if we didn't read anything before EOF or error, exit */
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 45
diff changeset
546 if (c == EOF && line->pos == 0) {
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 161
diff changeset
547 TRACE(("leave buf_getline: failure"))
51
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 45
diff changeset
548 return DROPBEAR_FAILURE;
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 45
diff changeset
549 } else {
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 161
diff changeset
550 TRACE(("leave buf_getline: success"))
117
e0acad552a92 Read the last line of a file without a finishing '\n' correctly
Matt Johnston <matt@ucc.asn.au>
parents: 109
diff changeset
551 buf_setpos(line, 0);
51
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 45
diff changeset
552 return DROPBEAR_SUCCESS;
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 45
diff changeset
553 }
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 45
diff changeset
554
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 45
diff changeset
555 }
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 45
diff changeset
556 #endif
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet.
Matt Johnston <matt@ucc.asn.au>
parents: 45
diff changeset
557
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
558 /* loop until the socket is closed (in case of EINTR) or
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
559 * we get and error.
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
560 * Returns DROPBEAR_SUCCESS or DROPBEAR_FAILURE */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
561 int m_close(int fd) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
562
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
563 int val;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
564 do {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
565 val = close(fd);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
566 } while (val < 0 && errno == EINTR);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
567
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
568 if (val == 0 || errno == EBADF) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
569 return DROPBEAR_SUCCESS;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
570 } else {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
571 return DROPBEAR_FAILURE;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
572 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
573 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
574
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
575 void * m_malloc(size_t size) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
576
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
577 void* ret;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
578
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
579 if (size == 0) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
580 dropbear_exit("m_malloc failed");
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
581 }
123
a0db9a23f6d4 calloc memory rather than mallocing it - can't hurt too much, and is
Matt Johnston <matt@ucc.asn.au>
parents: 117
diff changeset
582 ret = calloc(1, size);
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
583 if (ret == NULL) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
584 dropbear_exit("m_malloc failed");
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
585 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
586 return ret;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
587
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
588 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
589
11
f76c9389e9e0 Mostly done with the listener changeover
Matt Johnston <matt@ucc.asn.au>
parents: 4
diff changeset
590 void * m_strdup(const char * str) {
f76c9389e9e0 Mostly done with the listener changeover
Matt Johnston <matt@ucc.asn.au>
parents: 4
diff changeset
591 char* ret;
f76c9389e9e0 Mostly done with the listener changeover
Matt Johnston <matt@ucc.asn.au>
parents: 4
diff changeset
592
f76c9389e9e0 Mostly done with the listener changeover
Matt Johnston <matt@ucc.asn.au>
parents: 4
diff changeset
593 ret = strdup(str);
f76c9389e9e0 Mostly done with the listener changeover
Matt Johnston <matt@ucc.asn.au>
parents: 4
diff changeset
594 if (ret == NULL) {
f76c9389e9e0 Mostly done with the listener changeover
Matt Johnston <matt@ucc.asn.au>
parents: 4
diff changeset
595 dropbear_exit("m_strdup failed");
f76c9389e9e0 Mostly done with the listener changeover
Matt Johnston <matt@ucc.asn.au>
parents: 4
diff changeset
596 }
f76c9389e9e0 Mostly done with the listener changeover
Matt Johnston <matt@ucc.asn.au>
parents: 4
diff changeset
597 return ret;
f76c9389e9e0 Mostly done with the listener changeover
Matt Johnston <matt@ucc.asn.au>
parents: 4
diff changeset
598 }
f76c9389e9e0 Mostly done with the listener changeover
Matt Johnston <matt@ucc.asn.au>
parents: 4
diff changeset
599
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
600 void __m_free(void* ptr) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
601 if (ptr != NULL) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
602 free(ptr);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
603 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
604 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
605
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
606 void * m_realloc(void* ptr, size_t size) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
607
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
608 void *ret;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
609
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
610 if (size == 0) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
611 dropbear_exit("m_realloc failed");
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
612 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
613 ret = realloc(ptr, size);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
614 if (ret == NULL) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
615 dropbear_exit("m_realloc failed");
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
616 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
617 return ret;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
618 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
619
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
620 /* Clear the data, based on the method in David Wheeler's
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
621 * "Secure Programming for Linux and Unix HOWTO" */
161
b9d3f725e00b 0.44 release changes
Matt Johnston <matt@ucc.asn.au>
parents: 160
diff changeset
622 /* Beware of calling this from within dbutil.c - things might get
b9d3f725e00b 0.44 release changes
Matt Johnston <matt@ucc.asn.au>
parents: 160
diff changeset
623 * optimised away */
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
624 void m_burn(void *data, unsigned int len) {
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625 volatile char *p = data;
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626
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627 if (data == NULL)
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628 return;
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629 while (len--) {
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630 *p++ = 0x66;
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631 }
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632 }
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633
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634
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635 void setnonblocking(int fd) {
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636
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637 TRACE(("setnonblocking: %d", fd))
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638
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639 if (fcntl(fd, F_SETFL, O_NONBLOCK) < 0) {
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640 if (errno == ENODEV) {
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641 /* Some devices (like /dev/null redirected in)
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642 * can't be set to non-blocking */
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643 TRACE(("ignoring ENODEV for setnonblocking"))
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644 } else {
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645 dropbear_exit("Couldn't set nonblocking");
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646 }
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647 }
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648 TRACE(("leave setnonblocking"))
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649 }