Darren Tucker | da34553 | 2006-07-10 23:04:19 +1000 | [diff] [blame] | 1 | /* $OpenBSD: misc.c,v 1.56 2006/07/10 12:46:51 dtucker Exp $ */ |
Damien Miller | e4340be | 2000-09-16 13:29:08 +1100 | [diff] [blame] | 2 | /* |
| 3 | * Copyright (c) 2000 Markus Friedl. All rights reserved. |
Damien Miller | 3f94188 | 2006-03-31 23:13:02 +1100 | [diff] [blame] | 4 | * Copyright (c) 2005,2006 Damien Miller. All rights reserved. |
Damien Miller | e4340be | 2000-09-16 13:29:08 +1100 | [diff] [blame] | 5 | * |
| 6 | * Redistribution and use in source and binary forms, with or without |
| 7 | * modification, are permitted provided that the following conditions |
| 8 | * are met: |
| 9 | * 1. Redistributions of source code must retain the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer. |
| 11 | * 2. Redistributions in binary form must reproduce the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer in the |
| 13 | * documentation and/or other materials provided with the distribution. |
| 14 | * |
| 15 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| 16 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 17 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 18 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 19 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 20 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 21 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 22 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 23 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 24 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 25 | */ |
| 26 | |
Damien Miller | 61c5150 | 2000-08-18 14:01:04 +1000 | [diff] [blame] | 27 | #include "includes.h" |
Damien Miller | 17e91c0 | 2006-03-15 11:28:34 +1100 | [diff] [blame] | 28 | |
| 29 | #include <sys/ioctl.h> |
Damien Miller | 9f2abc4 | 2006-07-10 20:53:08 +1000 | [diff] [blame] | 30 | #include <sys/types.h> |
Damien Miller | 8ec8c3e | 2006-07-10 20:35:38 +1000 | [diff] [blame] | 31 | #include <sys/socket.h> |
| 32 | |
| 33 | #include <netinet/in.h> |
Damien Miller | 3a4051e | 2006-03-15 11:19:42 +1100 | [diff] [blame] | 34 | #include <netinet/tcp.h> |
Damien Miller | 8ec8c3e | 2006-07-10 20:35:38 +1000 | [diff] [blame] | 35 | |
Damien Miller | 57cf638 | 2006-07-10 21:13:46 +1000 | [diff] [blame] | 36 | #include <fcntl.h> |
Damien Miller | 03e2003 | 2006-03-15 11:16:59 +1100 | [diff] [blame] | 37 | #ifdef HAVE_PATHS_H |
Damien Miller | a9263d0 | 2006-03-15 11:18:26 +1100 | [diff] [blame] | 38 | # include <paths.h> |
Damien Miller | 9f2abc4 | 2006-07-10 20:53:08 +1000 | [diff] [blame] | 39 | #include <pwd.h> |
Damien Miller | 03e2003 | 2006-03-15 11:16:59 +1100 | [diff] [blame] | 40 | #endif |
Damien Miller | 3beb852 | 2006-01-02 23:40:10 +1100 | [diff] [blame] | 41 | #ifdef SSH_TUN_OPENBSD |
| 42 | #include <net/if.h> |
| 43 | #endif |
Damien Miller | 61c5150 | 2000-08-18 14:01:04 +1000 | [diff] [blame] | 44 | |
Kevin Steves | b6e773a | 2001-02-04 13:20:36 +0000 | [diff] [blame] | 45 | #include "misc.h" |
Ben Lindstrom | 226cfa0 | 2001-01-22 05:34:40 +0000 | [diff] [blame] | 46 | #include "log.h" |
Ben Lindstrom | 0690901 | 2001-03-05 06:09:31 +0000 | [diff] [blame] | 47 | #include "xmalloc.h" |
Darren Tucker | da34553 | 2006-07-10 23:04:19 +1000 | [diff] [blame] | 48 | #include "ssh.h" |
Damien Miller | 61c5150 | 2000-08-18 14:01:04 +1000 | [diff] [blame] | 49 | |
Ben Lindstrom | 4cc240d | 2001-07-04 04:46:56 +0000 | [diff] [blame] | 50 | /* remove newline at end of string */ |
Damien Miller | 61c5150 | 2000-08-18 14:01:04 +1000 | [diff] [blame] | 51 | char * |
| 52 | chop(char *s) |
| 53 | { |
| 54 | char *t = s; |
| 55 | while (*t) { |
Ben Lindstrom | 1c37c6a | 2001-12-06 18:00:18 +0000 | [diff] [blame] | 56 | if (*t == '\n' || *t == '\r') { |
Damien Miller | 61c5150 | 2000-08-18 14:01:04 +1000 | [diff] [blame] | 57 | *t = '\0'; |
| 58 | return s; |
| 59 | } |
| 60 | t++; |
| 61 | } |
| 62 | return s; |
| 63 | |
| 64 | } |
| 65 | |
Ben Lindstrom | 4cc240d | 2001-07-04 04:46:56 +0000 | [diff] [blame] | 66 | /* set/unset filedescriptor to non-blocking */ |
Damien Miller | 232711f | 2004-06-15 10:35:30 +1000 | [diff] [blame] | 67 | int |
Damien Miller | 61c5150 | 2000-08-18 14:01:04 +1000 | [diff] [blame] | 68 | set_nonblock(int fd) |
| 69 | { |
| 70 | int val; |
Ben Lindstrom | c93e84c | 2001-05-12 00:08:37 +0000 | [diff] [blame] | 71 | |
Damien Miller | 61c5150 | 2000-08-18 14:01:04 +1000 | [diff] [blame] | 72 | val = fcntl(fd, F_GETFL, 0); |
| 73 | if (val < 0) { |
| 74 | error("fcntl(%d, F_GETFL, 0): %s", fd, strerror(errno)); |
Damien Miller | 232711f | 2004-06-15 10:35:30 +1000 | [diff] [blame] | 75 | return (-1); |
Damien Miller | 61c5150 | 2000-08-18 14:01:04 +1000 | [diff] [blame] | 76 | } |
Damien Miller | 69b69aa | 2000-10-28 14:19:58 +1100 | [diff] [blame] | 77 | if (val & O_NONBLOCK) { |
Damien Miller | 232711f | 2004-06-15 10:35:30 +1000 | [diff] [blame] | 78 | debug3("fd %d is O_NONBLOCK", fd); |
| 79 | return (0); |
Damien Miller | 69b69aa | 2000-10-28 14:19:58 +1100 | [diff] [blame] | 80 | } |
Damien Miller | ef095ce | 2003-05-14 13:41:39 +1000 | [diff] [blame] | 81 | debug2("fd %d setting O_NONBLOCK", fd); |
Damien Miller | 61c5150 | 2000-08-18 14:01:04 +1000 | [diff] [blame] | 82 | val |= O_NONBLOCK; |
Damien Miller | 232711f | 2004-06-15 10:35:30 +1000 | [diff] [blame] | 83 | if (fcntl(fd, F_SETFL, val) == -1) { |
| 84 | debug("fcntl(%d, F_SETFL, O_NONBLOCK): %s", fd, |
| 85 | strerror(errno)); |
| 86 | return (-1); |
| 87 | } |
| 88 | return (0); |
Damien Miller | 61c5150 | 2000-08-18 14:01:04 +1000 | [diff] [blame] | 89 | } |
| 90 | |
Damien Miller | 232711f | 2004-06-15 10:35:30 +1000 | [diff] [blame] | 91 | int |
Ben Lindstrom | c93e84c | 2001-05-12 00:08:37 +0000 | [diff] [blame] | 92 | unset_nonblock(int fd) |
| 93 | { |
| 94 | int val; |
| 95 | |
| 96 | val = fcntl(fd, F_GETFL, 0); |
| 97 | if (val < 0) { |
| 98 | error("fcntl(%d, F_GETFL, 0): %s", fd, strerror(errno)); |
Damien Miller | 232711f | 2004-06-15 10:35:30 +1000 | [diff] [blame] | 99 | return (-1); |
Ben Lindstrom | c93e84c | 2001-05-12 00:08:37 +0000 | [diff] [blame] | 100 | } |
| 101 | if (!(val & O_NONBLOCK)) { |
Damien Miller | 232711f | 2004-06-15 10:35:30 +1000 | [diff] [blame] | 102 | debug3("fd %d is not O_NONBLOCK", fd); |
| 103 | return (0); |
Ben Lindstrom | c93e84c | 2001-05-12 00:08:37 +0000 | [diff] [blame] | 104 | } |
Ben Lindstrom | 352b1c2 | 2001-06-21 03:04:37 +0000 | [diff] [blame] | 105 | debug("fd %d clearing O_NONBLOCK", fd); |
Ben Lindstrom | c93e84c | 2001-05-12 00:08:37 +0000 | [diff] [blame] | 106 | val &= ~O_NONBLOCK; |
Damien Miller | 232711f | 2004-06-15 10:35:30 +1000 | [diff] [blame] | 107 | if (fcntl(fd, F_SETFL, val) == -1) { |
| 108 | debug("fcntl(%d, F_SETFL, ~O_NONBLOCK): %s", |
Ben Lindstrom | 84fcb31 | 2002-03-05 01:48:09 +0000 | [diff] [blame] | 109 | fd, strerror(errno)); |
Damien Miller | 232711f | 2004-06-15 10:35:30 +1000 | [diff] [blame] | 110 | return (-1); |
| 111 | } |
| 112 | return (0); |
Ben Lindstrom | c93e84c | 2001-05-12 00:08:37 +0000 | [diff] [blame] | 113 | } |
| 114 | |
Damien Miller | 398e1cf | 2002-02-05 11:52:13 +1100 | [diff] [blame] | 115 | /* disable nagle on socket */ |
| 116 | void |
| 117 | set_nodelay(int fd) |
| 118 | { |
Ben Lindstrom | e86de51 | 2002-03-05 01:28:14 +0000 | [diff] [blame] | 119 | int opt; |
| 120 | socklen_t optlen; |
Damien Miller | 398e1cf | 2002-02-05 11:52:13 +1100 | [diff] [blame] | 121 | |
Ben Lindstrom | 1ebd7a5 | 2002-02-26 18:12:51 +0000 | [diff] [blame] | 122 | optlen = sizeof opt; |
| 123 | if (getsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &opt, &optlen) == -1) { |
Darren Tucker | 6db8f93 | 2003-11-03 20:07:14 +1100 | [diff] [blame] | 124 | debug("getsockopt TCP_NODELAY: %.100s", strerror(errno)); |
Ben Lindstrom | 1ebd7a5 | 2002-02-26 18:12:51 +0000 | [diff] [blame] | 125 | return; |
| 126 | } |
| 127 | if (opt == 1) { |
| 128 | debug2("fd %d is TCP_NODELAY", fd); |
| 129 | return; |
| 130 | } |
| 131 | opt = 1; |
Ben Lindstrom | 1d568f9 | 2002-12-23 02:44:36 +0000 | [diff] [blame] | 132 | debug2("fd %d setting TCP_NODELAY", fd); |
Ben Lindstrom | 1ebd7a5 | 2002-02-26 18:12:51 +0000 | [diff] [blame] | 133 | if (setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &opt, sizeof opt) == -1) |
Damien Miller | 398e1cf | 2002-02-05 11:52:13 +1100 | [diff] [blame] | 134 | error("setsockopt TCP_NODELAY: %.100s", strerror(errno)); |
| 135 | } |
| 136 | |
Damien Miller | 61c5150 | 2000-08-18 14:01:04 +1000 | [diff] [blame] | 137 | /* Characters considered whitespace in strsep calls. */ |
| 138 | #define WHITESPACE " \t\r\n" |
Damien Miller | 306d118 | 2006-03-15 12:05:59 +1100 | [diff] [blame] | 139 | #define QUOTE "\"" |
Damien Miller | 61c5150 | 2000-08-18 14:01:04 +1000 | [diff] [blame] | 140 | |
Ben Lindstrom | 4cc240d | 2001-07-04 04:46:56 +0000 | [diff] [blame] | 141 | /* return next token in configuration line */ |
Damien Miller | 61c5150 | 2000-08-18 14:01:04 +1000 | [diff] [blame] | 142 | char * |
| 143 | strdelim(char **s) |
| 144 | { |
| 145 | char *old; |
| 146 | int wspace = 0; |
| 147 | |
| 148 | if (*s == NULL) |
| 149 | return NULL; |
| 150 | |
| 151 | old = *s; |
| 152 | |
Damien Miller | 306d118 | 2006-03-15 12:05:59 +1100 | [diff] [blame] | 153 | *s = strpbrk(*s, WHITESPACE QUOTE "="); |
Damien Miller | 61c5150 | 2000-08-18 14:01:04 +1000 | [diff] [blame] | 154 | if (*s == NULL) |
| 155 | return (old); |
| 156 | |
Damien Miller | 306d118 | 2006-03-15 12:05:59 +1100 | [diff] [blame] | 157 | if (*s[0] == '\"') { |
| 158 | memmove(*s, *s + 1, strlen(*s)); /* move nul too */ |
| 159 | /* Find matching quote */ |
| 160 | if ((*s = strpbrk(*s, QUOTE)) == NULL) { |
| 161 | return (NULL); /* no matching quote */ |
| 162 | } else { |
| 163 | *s[0] = '\0'; |
| 164 | return (old); |
| 165 | } |
| 166 | } |
| 167 | |
Damien Miller | 61c5150 | 2000-08-18 14:01:04 +1000 | [diff] [blame] | 168 | /* Allow only one '=' to be skipped */ |
| 169 | if (*s[0] == '=') |
| 170 | wspace = 1; |
| 171 | *s[0] = '\0'; |
| 172 | |
Damien Miller | 306d118 | 2006-03-15 12:05:59 +1100 | [diff] [blame] | 173 | /* Skip any extra whitespace after first token */ |
Damien Miller | 61c5150 | 2000-08-18 14:01:04 +1000 | [diff] [blame] | 174 | *s += strspn(*s + 1, WHITESPACE) + 1; |
| 175 | if (*s[0] == '=' && !wspace) |
| 176 | *s += strspn(*s + 1, WHITESPACE) + 1; |
| 177 | |
| 178 | return (old); |
| 179 | } |
Kevin Steves | b6e773a | 2001-02-04 13:20:36 +0000 | [diff] [blame] | 180 | |
Ben Lindstrom | 086cf21 | 2001-03-05 05:56:40 +0000 | [diff] [blame] | 181 | struct passwd * |
| 182 | pwcopy(struct passwd *pw) |
| 183 | { |
Damien Miller | 07d86be | 2006-03-26 14:19:21 +1100 | [diff] [blame] | 184 | struct passwd *copy = xcalloc(1, sizeof(*copy)); |
Ben Lindstrom | 4030442 | 2001-03-05 06:22:01 +0000 | [diff] [blame] | 185 | |
Ben Lindstrom | 086cf21 | 2001-03-05 05:56:40 +0000 | [diff] [blame] | 186 | copy->pw_name = xstrdup(pw->pw_name); |
| 187 | copy->pw_passwd = xstrdup(pw->pw_passwd); |
Ben Lindstrom | 4030442 | 2001-03-05 06:22:01 +0000 | [diff] [blame] | 188 | copy->pw_gecos = xstrdup(pw->pw_gecos); |
Ben Lindstrom | 086cf21 | 2001-03-05 05:56:40 +0000 | [diff] [blame] | 189 | copy->pw_uid = pw->pw_uid; |
| 190 | copy->pw_gid = pw->pw_gid; |
Kevin Steves | 8245695 | 2001-06-22 21:14:18 +0000 | [diff] [blame] | 191 | #ifdef HAVE_PW_EXPIRE_IN_PASSWD |
Ben Lindstrom | 3af4d46 | 2001-06-21 03:11:27 +0000 | [diff] [blame] | 192 | copy->pw_expire = pw->pw_expire; |
Kevin Steves | 8245695 | 2001-06-22 21:14:18 +0000 | [diff] [blame] | 193 | #endif |
| 194 | #ifdef HAVE_PW_CHANGE_IN_PASSWD |
Ben Lindstrom | 3af4d46 | 2001-06-21 03:11:27 +0000 | [diff] [blame] | 195 | copy->pw_change = pw->pw_change; |
Kevin Steves | 8245695 | 2001-06-22 21:14:18 +0000 | [diff] [blame] | 196 | #endif |
Ben Lindstrom | 0f68db4 | 2001-03-05 07:57:09 +0000 | [diff] [blame] | 197 | #ifdef HAVE_PW_CLASS_IN_PASSWD |
Ben Lindstrom | 086cf21 | 2001-03-05 05:56:40 +0000 | [diff] [blame] | 198 | copy->pw_class = xstrdup(pw->pw_class); |
Ben Lindstrom | 0f68db4 | 2001-03-05 07:57:09 +0000 | [diff] [blame] | 199 | #endif |
Ben Lindstrom | 086cf21 | 2001-03-05 05:56:40 +0000 | [diff] [blame] | 200 | copy->pw_dir = xstrdup(pw->pw_dir); |
| 201 | copy->pw_shell = xstrdup(pw->pw_shell); |
| 202 | return copy; |
| 203 | } |
| 204 | |
Ben Lindstrom | 4cc240d | 2001-07-04 04:46:56 +0000 | [diff] [blame] | 205 | /* |
| 206 | * Convert ASCII string to TCP/IP port number. |
| 207 | * Port must be >0 and <=65535. |
| 208 | * Return 0 if invalid. |
| 209 | */ |
| 210 | int |
| 211 | a2port(const char *s) |
Ben Lindstrom | 19066a1 | 2001-04-12 23:39:26 +0000 | [diff] [blame] | 212 | { |
| 213 | long port; |
| 214 | char *endp; |
| 215 | |
| 216 | errno = 0; |
| 217 | port = strtol(s, &endp, 0); |
| 218 | if (s == endp || *endp != '\0' || |
| 219 | (errno == ERANGE && (port == LONG_MIN || port == LONG_MAX)) || |
| 220 | port <= 0 || port > 65535) |
| 221 | return 0; |
| 222 | |
| 223 | return port; |
| 224 | } |
| 225 | |
Damien Miller | d27b947 | 2005-12-13 19:29:02 +1100 | [diff] [blame] | 226 | int |
| 227 | a2tun(const char *s, int *remote) |
| 228 | { |
| 229 | const char *errstr = NULL; |
| 230 | char *sp, *ep; |
| 231 | int tun; |
| 232 | |
| 233 | if (remote != NULL) { |
Damien Miller | 7b58e80 | 2005-12-13 19:33:19 +1100 | [diff] [blame] | 234 | *remote = SSH_TUNID_ANY; |
Damien Miller | d27b947 | 2005-12-13 19:29:02 +1100 | [diff] [blame] | 235 | sp = xstrdup(s); |
| 236 | if ((ep = strchr(sp, ':')) == NULL) { |
| 237 | xfree(sp); |
| 238 | return (a2tun(s, NULL)); |
| 239 | } |
| 240 | ep[0] = '\0'; ep++; |
| 241 | *remote = a2tun(ep, NULL); |
| 242 | tun = a2tun(sp, NULL); |
| 243 | xfree(sp); |
Damien Miller | 7b58e80 | 2005-12-13 19:33:19 +1100 | [diff] [blame] | 244 | return (*remote == SSH_TUNID_ERR ? *remote : tun); |
Damien Miller | d27b947 | 2005-12-13 19:29:02 +1100 | [diff] [blame] | 245 | } |
| 246 | |
| 247 | if (strcasecmp(s, "any") == 0) |
Damien Miller | 7b58e80 | 2005-12-13 19:33:19 +1100 | [diff] [blame] | 248 | return (SSH_TUNID_ANY); |
Damien Miller | d27b947 | 2005-12-13 19:29:02 +1100 | [diff] [blame] | 249 | |
Damien Miller | 7b58e80 | 2005-12-13 19:33:19 +1100 | [diff] [blame] | 250 | tun = strtonum(s, 0, SSH_TUNID_MAX, &errstr); |
| 251 | if (errstr != NULL) |
| 252 | return (SSH_TUNID_ERR); |
Damien Miller | d27b947 | 2005-12-13 19:29:02 +1100 | [diff] [blame] | 253 | |
| 254 | return (tun); |
| 255 | } |
| 256 | |
Ben Lindstrom | 1bda4c8 | 2001-06-05 19:59:08 +0000 | [diff] [blame] | 257 | #define SECONDS 1 |
| 258 | #define MINUTES (SECONDS * 60) |
| 259 | #define HOURS (MINUTES * 60) |
| 260 | #define DAYS (HOURS * 24) |
| 261 | #define WEEKS (DAYS * 7) |
| 262 | |
Ben Lindstrom | 4cc240d | 2001-07-04 04:46:56 +0000 | [diff] [blame] | 263 | /* |
| 264 | * Convert a time string into seconds; format is |
| 265 | * a sequence of: |
| 266 | * time[qualifier] |
| 267 | * |
| 268 | * Valid time qualifiers are: |
| 269 | * <none> seconds |
| 270 | * s|S seconds |
| 271 | * m|M minutes |
| 272 | * h|H hours |
| 273 | * d|D days |
| 274 | * w|W weeks |
| 275 | * |
| 276 | * Examples: |
| 277 | * 90m 90 minutes |
| 278 | * 1h30m 90 minutes |
| 279 | * 2d 2 days |
| 280 | * 1w 1 week |
| 281 | * |
| 282 | * Return -1 if time string is invalid. |
| 283 | */ |
| 284 | long |
| 285 | convtime(const char *s) |
Ben Lindstrom | 1bda4c8 | 2001-06-05 19:59:08 +0000 | [diff] [blame] | 286 | { |
| 287 | long total, secs; |
| 288 | const char *p; |
| 289 | char *endp; |
| 290 | |
| 291 | errno = 0; |
| 292 | total = 0; |
| 293 | p = s; |
| 294 | |
| 295 | if (p == NULL || *p == '\0') |
| 296 | return -1; |
| 297 | |
| 298 | while (*p) { |
| 299 | secs = strtol(p, &endp, 10); |
| 300 | if (p == endp || |
| 301 | (errno == ERANGE && (secs == LONG_MIN || secs == LONG_MAX)) || |
| 302 | secs < 0) |
| 303 | return -1; |
| 304 | |
| 305 | switch (*endp++) { |
| 306 | case '\0': |
| 307 | endp--; |
Damien Miller | 69b7203 | 2006-03-26 14:02:35 +1100 | [diff] [blame] | 308 | break; |
Ben Lindstrom | 1bda4c8 | 2001-06-05 19:59:08 +0000 | [diff] [blame] | 309 | case 's': |
| 310 | case 'S': |
| 311 | break; |
| 312 | case 'm': |
| 313 | case 'M': |
| 314 | secs *= MINUTES; |
| 315 | break; |
| 316 | case 'h': |
| 317 | case 'H': |
| 318 | secs *= HOURS; |
| 319 | break; |
| 320 | case 'd': |
| 321 | case 'D': |
| 322 | secs *= DAYS; |
| 323 | break; |
| 324 | case 'w': |
| 325 | case 'W': |
| 326 | secs *= WEEKS; |
| 327 | break; |
| 328 | default: |
| 329 | return -1; |
| 330 | } |
| 331 | total += secs; |
| 332 | if (total < 0) |
| 333 | return -1; |
| 334 | p = endp; |
| 335 | } |
| 336 | |
| 337 | return total; |
| 338 | } |
| 339 | |
Damien Miller | f91ee4c | 2005-03-01 21:24:33 +1100 | [diff] [blame] | 340 | /* |
Darren Tucker | da34553 | 2006-07-10 23:04:19 +1000 | [diff] [blame] | 341 | * Returns a standardized host+port identifier string. |
| 342 | * Caller must free returned string. |
| 343 | */ |
| 344 | char * |
| 345 | put_host_port(const char *host, u_short port) |
| 346 | { |
| 347 | char *hoststr; |
| 348 | |
| 349 | if (port == 0 || port == SSH_DEFAULT_PORT) |
| 350 | return(xstrdup(host)); |
| 351 | if (asprintf(&hoststr, "[%s]:%d", host, (int)port) < 0) |
| 352 | fatal("put_host_port: asprintf: %s", strerror(errno)); |
| 353 | debug3("put_host_port: %s", hoststr); |
| 354 | return hoststr; |
| 355 | } |
| 356 | |
| 357 | /* |
Damien Miller | f91ee4c | 2005-03-01 21:24:33 +1100 | [diff] [blame] | 358 | * Search for next delimiter between hostnames/addresses and ports. |
| 359 | * Argument may be modified (for termination). |
| 360 | * Returns *cp if parsing succeeds. |
| 361 | * *cp is set to the start of the next delimiter, if one was found. |
| 362 | * If this is the last field, *cp is set to NULL. |
| 363 | */ |
| 364 | char * |
| 365 | hpdelim(char **cp) |
| 366 | { |
| 367 | char *s, *old; |
| 368 | |
| 369 | if (cp == NULL || *cp == NULL) |
| 370 | return NULL; |
| 371 | |
| 372 | old = s = *cp; |
| 373 | if (*s == '[') { |
| 374 | if ((s = strchr(s, ']')) == NULL) |
| 375 | return NULL; |
| 376 | else |
| 377 | s++; |
| 378 | } else if ((s = strpbrk(s, ":/")) == NULL) |
| 379 | s = *cp + strlen(*cp); /* skip to end (see first case below) */ |
| 380 | |
| 381 | switch (*s) { |
| 382 | case '\0': |
| 383 | *cp = NULL; /* no more fields*/ |
| 384 | break; |
Darren Tucker | 47eede7 | 2005-03-14 23:08:12 +1100 | [diff] [blame] | 385 | |
Damien Miller | f91ee4c | 2005-03-01 21:24:33 +1100 | [diff] [blame] | 386 | case ':': |
| 387 | case '/': |
| 388 | *s = '\0'; /* terminate */ |
| 389 | *cp = s + 1; |
| 390 | break; |
Darren Tucker | 47eede7 | 2005-03-14 23:08:12 +1100 | [diff] [blame] | 391 | |
Damien Miller | f91ee4c | 2005-03-01 21:24:33 +1100 | [diff] [blame] | 392 | default: |
| 393 | return NULL; |
| 394 | } |
| 395 | |
| 396 | return old; |
| 397 | } |
| 398 | |
Ben Lindstrom | 4529b70 | 2001-05-03 23:39:53 +0000 | [diff] [blame] | 399 | char * |
| 400 | cleanhostname(char *host) |
| 401 | { |
| 402 | if (*host == '[' && host[strlen(host) - 1] == ']') { |
| 403 | host[strlen(host) - 1] = '\0'; |
| 404 | return (host + 1); |
| 405 | } else |
| 406 | return host; |
| 407 | } |
| 408 | |
| 409 | char * |
| 410 | colon(char *cp) |
| 411 | { |
| 412 | int flag = 0; |
| 413 | |
| 414 | if (*cp == ':') /* Leading colon is part of file name. */ |
| 415 | return (0); |
| 416 | if (*cp == '[') |
| 417 | flag = 1; |
| 418 | |
| 419 | for (; *cp; ++cp) { |
| 420 | if (*cp == '@' && *(cp+1) == '[') |
| 421 | flag = 1; |
| 422 | if (*cp == ']' && *(cp+1) == ':' && flag) |
| 423 | return (cp+1); |
| 424 | if (*cp == ':' && !flag) |
| 425 | return (cp); |
| 426 | if (*cp == '/') |
| 427 | return (0); |
| 428 | } |
| 429 | return (0); |
| 430 | } |
| 431 | |
Ben Lindstrom | 4cc240d | 2001-07-04 04:46:56 +0000 | [diff] [blame] | 432 | /* function to assist building execv() arguments */ |
Ben Lindstrom | 387c472 | 2001-05-08 20:27:25 +0000 | [diff] [blame] | 433 | void |
| 434 | addargs(arglist *args, char *fmt, ...) |
| 435 | { |
| 436 | va_list ap; |
Damien Miller | 3eec6b7 | 2006-01-31 21:49:27 +1100 | [diff] [blame] | 437 | char *cp; |
Darren Tucker | c7a6fc4 | 2004-08-13 21:18:00 +1000 | [diff] [blame] | 438 | u_int nalloc; |
Damien Miller | 3eec6b7 | 2006-01-31 21:49:27 +1100 | [diff] [blame] | 439 | int r; |
Ben Lindstrom | 387c472 | 2001-05-08 20:27:25 +0000 | [diff] [blame] | 440 | |
| 441 | va_start(ap, fmt); |
Damien Miller | 3eec6b7 | 2006-01-31 21:49:27 +1100 | [diff] [blame] | 442 | r = vasprintf(&cp, fmt, ap); |
Ben Lindstrom | 387c472 | 2001-05-08 20:27:25 +0000 | [diff] [blame] | 443 | va_end(ap); |
Damien Miller | 3eec6b7 | 2006-01-31 21:49:27 +1100 | [diff] [blame] | 444 | if (r == -1) |
| 445 | fatal("addargs: argument too long"); |
Ben Lindstrom | 387c472 | 2001-05-08 20:27:25 +0000 | [diff] [blame] | 446 | |
Darren Tucker | fb16b24 | 2003-09-22 21:04:23 +1000 | [diff] [blame] | 447 | nalloc = args->nalloc; |
Ben Lindstrom | 387c472 | 2001-05-08 20:27:25 +0000 | [diff] [blame] | 448 | if (args->list == NULL) { |
Darren Tucker | fb16b24 | 2003-09-22 21:04:23 +1000 | [diff] [blame] | 449 | nalloc = 32; |
Ben Lindstrom | 387c472 | 2001-05-08 20:27:25 +0000 | [diff] [blame] | 450 | args->num = 0; |
Darren Tucker | fb16b24 | 2003-09-22 21:04:23 +1000 | [diff] [blame] | 451 | } else if (args->num+2 >= nalloc) |
| 452 | nalloc *= 2; |
Ben Lindstrom | 387c472 | 2001-05-08 20:27:25 +0000 | [diff] [blame] | 453 | |
Damien Miller | 3681209 | 2006-03-26 14:22:47 +1100 | [diff] [blame] | 454 | args->list = xrealloc(args->list, nalloc, sizeof(char *)); |
Darren Tucker | fb16b24 | 2003-09-22 21:04:23 +1000 | [diff] [blame] | 455 | args->nalloc = nalloc; |
Damien Miller | 3eec6b7 | 2006-01-31 21:49:27 +1100 | [diff] [blame] | 456 | args->list[args->num++] = cp; |
Ben Lindstrom | 387c472 | 2001-05-08 20:27:25 +0000 | [diff] [blame] | 457 | args->list[args->num] = NULL; |
| 458 | } |
Darren Tucker | 22cc741 | 2004-12-06 22:47:41 +1100 | [diff] [blame] | 459 | |
Damien Miller | 3eec6b7 | 2006-01-31 21:49:27 +1100 | [diff] [blame] | 460 | void |
| 461 | replacearg(arglist *args, u_int which, char *fmt, ...) |
| 462 | { |
| 463 | va_list ap; |
| 464 | char *cp; |
| 465 | int r; |
| 466 | |
| 467 | va_start(ap, fmt); |
| 468 | r = vasprintf(&cp, fmt, ap); |
| 469 | va_end(ap); |
| 470 | if (r == -1) |
| 471 | fatal("replacearg: argument too long"); |
| 472 | |
| 473 | if (which >= args->num) |
| 474 | fatal("replacearg: tried to replace invalid arg %d >= %d", |
| 475 | which, args->num); |
| 476 | xfree(args->list[which]); |
| 477 | args->list[which] = cp; |
| 478 | } |
| 479 | |
| 480 | void |
| 481 | freeargs(arglist *args) |
| 482 | { |
| 483 | u_int i; |
| 484 | |
| 485 | if (args->list != NULL) { |
| 486 | for (i = 0; i < args->num; i++) |
| 487 | xfree(args->list[i]); |
| 488 | xfree(args->list); |
| 489 | args->nalloc = args->num = 0; |
| 490 | args->list = NULL; |
| 491 | } |
| 492 | } |
| 493 | |
Darren Tucker | 22cc741 | 2004-12-06 22:47:41 +1100 | [diff] [blame] | 494 | /* |
Damien Miller | 5fd38c0 | 2005-05-26 12:02:14 +1000 | [diff] [blame] | 495 | * Expands tildes in the file name. Returns data allocated by xmalloc. |
| 496 | * Warning: this calls getpw*. |
| 497 | */ |
| 498 | char * |
| 499 | tilde_expand_filename(const char *filename, uid_t uid) |
| 500 | { |
| 501 | const char *path; |
| 502 | char user[128], ret[MAXPATHLEN]; |
| 503 | struct passwd *pw; |
Damien Miller | eccb9de | 2005-06-17 12:59:34 +1000 | [diff] [blame] | 504 | u_int len, slash; |
Damien Miller | 5fd38c0 | 2005-05-26 12:02:14 +1000 | [diff] [blame] | 505 | |
| 506 | if (*filename != '~') |
| 507 | return (xstrdup(filename)); |
| 508 | filename++; |
| 509 | |
| 510 | path = strchr(filename, '/'); |
| 511 | if (path != NULL && path > filename) { /* ~user/path */ |
Damien Miller | eccb9de | 2005-06-17 12:59:34 +1000 | [diff] [blame] | 512 | slash = path - filename; |
| 513 | if (slash > sizeof(user) - 1) |
Damien Miller | 5fd38c0 | 2005-05-26 12:02:14 +1000 | [diff] [blame] | 514 | fatal("tilde_expand_filename: ~username too long"); |
Damien Miller | eccb9de | 2005-06-17 12:59:34 +1000 | [diff] [blame] | 515 | memcpy(user, filename, slash); |
| 516 | user[slash] = '\0'; |
Damien Miller | 5fd38c0 | 2005-05-26 12:02:14 +1000 | [diff] [blame] | 517 | if ((pw = getpwnam(user)) == NULL) |
| 518 | fatal("tilde_expand_filename: No such user %s", user); |
| 519 | } else if ((pw = getpwuid(uid)) == NULL) /* ~/path */ |
| 520 | fatal("tilde_expand_filename: No such uid %d", uid); |
| 521 | |
| 522 | if (strlcpy(ret, pw->pw_dir, sizeof(ret)) >= sizeof(ret)) |
| 523 | fatal("tilde_expand_filename: Path too long"); |
| 524 | |
| 525 | /* Make sure directory has a trailing '/' */ |
| 526 | len = strlen(pw->pw_dir); |
| 527 | if ((len == 0 || pw->pw_dir[len - 1] != '/') && |
| 528 | strlcat(ret, "/", sizeof(ret)) >= sizeof(ret)) |
| 529 | fatal("tilde_expand_filename: Path too long"); |
| 530 | |
| 531 | /* Skip leading '/' from specified path */ |
| 532 | if (path != NULL) |
| 533 | filename = path + 1; |
| 534 | if (strlcat(ret, filename, sizeof(ret)) >= sizeof(ret)) |
| 535 | fatal("tilde_expand_filename: Path too long"); |
| 536 | |
| 537 | return (xstrdup(ret)); |
| 538 | } |
| 539 | |
| 540 | /* |
Damien Miller | 6476cad | 2005-06-16 13:18:34 +1000 | [diff] [blame] | 541 | * Expand a string with a set of %[char] escapes. A number of escapes may be |
| 542 | * specified as (char *escape_chars, char *replacement) pairs. The list must |
Darren Tucker | bee73d5 | 2005-07-14 17:05:02 +1000 | [diff] [blame] | 543 | * be terminated by a NULL escape_char. Returns replaced string in memory |
Damien Miller | 6476cad | 2005-06-16 13:18:34 +1000 | [diff] [blame] | 544 | * allocated by xmalloc. |
| 545 | */ |
| 546 | char * |
| 547 | percent_expand(const char *string, ...) |
| 548 | { |
| 549 | #define EXPAND_MAX_KEYS 16 |
| 550 | struct { |
| 551 | const char *key; |
| 552 | const char *repl; |
| 553 | } keys[EXPAND_MAX_KEYS]; |
Damien Miller | eccb9de | 2005-06-17 12:59:34 +1000 | [diff] [blame] | 554 | u_int num_keys, i, j; |
Damien Miller | 6476cad | 2005-06-16 13:18:34 +1000 | [diff] [blame] | 555 | char buf[4096]; |
| 556 | va_list ap; |
| 557 | |
| 558 | /* Gather keys */ |
| 559 | va_start(ap, string); |
| 560 | for (num_keys = 0; num_keys < EXPAND_MAX_KEYS; num_keys++) { |
| 561 | keys[num_keys].key = va_arg(ap, char *); |
| 562 | if (keys[num_keys].key == NULL) |
| 563 | break; |
| 564 | keys[num_keys].repl = va_arg(ap, char *); |
| 565 | if (keys[num_keys].repl == NULL) |
| 566 | fatal("percent_expand: NULL replacement"); |
| 567 | } |
| 568 | va_end(ap); |
| 569 | |
| 570 | if (num_keys >= EXPAND_MAX_KEYS) |
| 571 | fatal("percent_expand: too many keys"); |
| 572 | |
| 573 | /* Expand string */ |
| 574 | *buf = '\0'; |
| 575 | for (i = 0; *string != '\0'; string++) { |
| 576 | if (*string != '%') { |
| 577 | append: |
| 578 | buf[i++] = *string; |
| 579 | if (i >= sizeof(buf)) |
| 580 | fatal("percent_expand: string too long"); |
| 581 | buf[i] = '\0'; |
| 582 | continue; |
| 583 | } |
| 584 | string++; |
| 585 | if (*string == '%') |
| 586 | goto append; |
| 587 | for (j = 0; j < num_keys; j++) { |
| 588 | if (strchr(keys[j].key, *string) != NULL) { |
| 589 | i = strlcat(buf, keys[j].repl, sizeof(buf)); |
| 590 | if (i >= sizeof(buf)) |
| 591 | fatal("percent_expand: string too long"); |
| 592 | break; |
| 593 | } |
| 594 | } |
| 595 | if (j >= num_keys) |
| 596 | fatal("percent_expand: unknown key %%%c", *string); |
| 597 | } |
| 598 | return (xstrdup(buf)); |
| 599 | #undef EXPAND_MAX_KEYS |
| 600 | } |
| 601 | |
| 602 | /* |
Darren Tucker | 22cc741 | 2004-12-06 22:47:41 +1100 | [diff] [blame] | 603 | * Read an entire line from a public key file into a static buffer, discarding |
| 604 | * lines that exceed the buffer size. Returns 0 on success, -1 on failure. |
| 605 | */ |
| 606 | int |
| 607 | read_keyfile_line(FILE *f, const char *filename, char *buf, size_t bufsz, |
Darren Tucker | f0f9098 | 2004-12-11 13:39:50 +1100 | [diff] [blame] | 608 | u_long *lineno) |
Darren Tucker | 22cc741 | 2004-12-06 22:47:41 +1100 | [diff] [blame] | 609 | { |
| 610 | while (fgets(buf, bufsz, f) != NULL) { |
| 611 | (*lineno)++; |
| 612 | if (buf[strlen(buf) - 1] == '\n' || feof(f)) { |
| 613 | return 0; |
| 614 | } else { |
Darren Tucker | f0f9098 | 2004-12-11 13:39:50 +1100 | [diff] [blame] | 615 | debug("%s: %s line %lu exceeds size limit", __func__, |
| 616 | filename, *lineno); |
Darren Tucker | 22cc741 | 2004-12-06 22:47:41 +1100 | [diff] [blame] | 617 | /* discard remainder of line */ |
Darren Tucker | 47eede7 | 2005-03-14 23:08:12 +1100 | [diff] [blame] | 618 | while (fgetc(f) != '\n' && !feof(f)) |
Darren Tucker | 22cc741 | 2004-12-06 22:47:41 +1100 | [diff] [blame] | 619 | ; /* nothing */ |
| 620 | } |
| 621 | } |
| 622 | return -1; |
| 623 | } |
Damien Miller | 1339002 | 2005-07-06 09:44:19 +1000 | [diff] [blame] | 624 | |
Damien Miller | d27b947 | 2005-12-13 19:29:02 +1100 | [diff] [blame] | 625 | int |
Damien Miller | 7b58e80 | 2005-12-13 19:33:19 +1100 | [diff] [blame] | 626 | tun_open(int tun, int mode) |
Damien Miller | d27b947 | 2005-12-13 19:29:02 +1100 | [diff] [blame] | 627 | { |
Damien Miller | 62a31c9 | 2005-12-13 20:44:13 +1100 | [diff] [blame] | 628 | #if defined(CUSTOM_SYS_TUN_OPEN) |
| 629 | return (sys_tun_open(tun, mode)); |
Damien Miller | 2dcddbf | 2006-01-01 19:47:05 +1100 | [diff] [blame] | 630 | #elif defined(SSH_TUN_OPENBSD) |
Damien Miller | 7b58e80 | 2005-12-13 19:33:19 +1100 | [diff] [blame] | 631 | struct ifreq ifr; |
Damien Miller | d27b947 | 2005-12-13 19:29:02 +1100 | [diff] [blame] | 632 | char name[100]; |
Damien Miller | 7b58e80 | 2005-12-13 19:33:19 +1100 | [diff] [blame] | 633 | int fd = -1, sock; |
Damien Miller | d27b947 | 2005-12-13 19:29:02 +1100 | [diff] [blame] | 634 | |
Damien Miller | 7b58e80 | 2005-12-13 19:33:19 +1100 | [diff] [blame] | 635 | /* Open the tunnel device */ |
| 636 | if (tun <= SSH_TUNID_MAX) { |
Damien Miller | d27b947 | 2005-12-13 19:29:02 +1100 | [diff] [blame] | 637 | snprintf(name, sizeof(name), "/dev/tun%d", tun); |
Damien Miller | 7b58e80 | 2005-12-13 19:33:19 +1100 | [diff] [blame] | 638 | fd = open(name, O_RDWR); |
| 639 | } else if (tun == SSH_TUNID_ANY) { |
| 640 | for (tun = 100; tun >= 0; tun--) { |
| 641 | snprintf(name, sizeof(name), "/dev/tun%d", tun); |
| 642 | if ((fd = open(name, O_RDWR)) >= 0) |
| 643 | break; |
Damien Miller | d27b947 | 2005-12-13 19:29:02 +1100 | [diff] [blame] | 644 | } |
| 645 | } else { |
Damien Miller | a210d52 | 2006-01-02 23:40:30 +1100 | [diff] [blame] | 646 | debug("%s: invalid tunnel %u", __func__, tun); |
Damien Miller | 7b58e80 | 2005-12-13 19:33:19 +1100 | [diff] [blame] | 647 | return (-1); |
Damien Miller | d27b947 | 2005-12-13 19:29:02 +1100 | [diff] [blame] | 648 | } |
Damien Miller | 7b58e80 | 2005-12-13 19:33:19 +1100 | [diff] [blame] | 649 | |
| 650 | if (fd < 0) { |
| 651 | debug("%s: %s open failed: %s", __func__, name, strerror(errno)); |
| 652 | return (-1); |
| 653 | } |
| 654 | |
| 655 | debug("%s: %s mode %d fd %d", __func__, name, mode, fd); |
| 656 | |
| 657 | /* Set the tunnel device operation mode */ |
| 658 | snprintf(ifr.ifr_name, sizeof(ifr.ifr_name), "tun%d", tun); |
| 659 | if ((sock = socket(PF_UNIX, SOCK_STREAM, 0)) == -1) |
| 660 | goto failed; |
| 661 | |
| 662 | if (ioctl(sock, SIOCGIFFLAGS, &ifr) == -1) |
| 663 | goto failed; |
Damien Miller | a1d9a18 | 2006-01-02 23:41:21 +1100 | [diff] [blame] | 664 | |
| 665 | /* Set interface mode */ |
| 666 | ifr.ifr_flags &= ~IFF_UP; |
| 667 | if (mode == SSH_TUNMODE_ETHERNET) |
Damien Miller | 7b58e80 | 2005-12-13 19:33:19 +1100 | [diff] [blame] | 668 | ifr.ifr_flags |= IFF_LINK0; |
Damien Miller | a1d9a18 | 2006-01-02 23:41:21 +1100 | [diff] [blame] | 669 | else |
| 670 | ifr.ifr_flags &= ~IFF_LINK0; |
| 671 | if (ioctl(sock, SIOCSIFFLAGS, &ifr) == -1) |
| 672 | goto failed; |
| 673 | |
| 674 | /* Bring interface up */ |
Damien Miller | 7b58e80 | 2005-12-13 19:33:19 +1100 | [diff] [blame] | 675 | ifr.ifr_flags |= IFF_UP; |
| 676 | if (ioctl(sock, SIOCSIFFLAGS, &ifr) == -1) |
| 677 | goto failed; |
| 678 | |
| 679 | close(sock); |
| 680 | return (fd); |
| 681 | |
| 682 | failed: |
| 683 | if (fd >= 0) |
| 684 | close(fd); |
| 685 | if (sock >= 0) |
| 686 | close(sock); |
| 687 | debug("%s: failed to set %s mode %d: %s", __func__, name, |
| 688 | mode, strerror(errno)); |
Damien Miller | d27b947 | 2005-12-13 19:29:02 +1100 | [diff] [blame] | 689 | return (-1); |
Damien Miller | 62a31c9 | 2005-12-13 20:44:13 +1100 | [diff] [blame] | 690 | #else |
| 691 | error("Tunnel interfaces are not supported on this platform"); |
| 692 | return (-1); |
| 693 | #endif |
Damien Miller | d27b947 | 2005-12-13 19:29:02 +1100 | [diff] [blame] | 694 | } |
| 695 | |
Darren Tucker | ce321d8 | 2005-10-03 18:11:24 +1000 | [diff] [blame] | 696 | void |
| 697 | sanitise_stdfd(void) |
| 698 | { |
Damien Miller | 72c5b7d | 2006-01-06 14:50:44 +1100 | [diff] [blame] | 699 | int nullfd, dupfd; |
Darren Tucker | ce321d8 | 2005-10-03 18:11:24 +1000 | [diff] [blame] | 700 | |
Damien Miller | 72c5b7d | 2006-01-06 14:50:44 +1100 | [diff] [blame] | 701 | if ((nullfd = dupfd = open(_PATH_DEVNULL, O_RDWR)) == -1) { |
Darren Tucker | ce321d8 | 2005-10-03 18:11:24 +1000 | [diff] [blame] | 702 | fprintf(stderr, "Couldn't open /dev/null: %s", strerror(errno)); |
| 703 | exit(1); |
| 704 | } |
Damien Miller | 72c5b7d | 2006-01-06 14:50:44 +1100 | [diff] [blame] | 705 | while (++dupfd <= 2) { |
| 706 | /* Only clobber closed fds */ |
| 707 | if (fcntl(dupfd, F_GETFL, 0) >= 0) |
| 708 | continue; |
| 709 | if (dup2(nullfd, dupfd) == -1) { |
Darren Tucker | ce321d8 | 2005-10-03 18:11:24 +1000 | [diff] [blame] | 710 | fprintf(stderr, "dup2: %s", strerror(errno)); |
| 711 | exit(1); |
| 712 | } |
Darren Tucker | ce321d8 | 2005-10-03 18:11:24 +1000 | [diff] [blame] | 713 | } |
| 714 | if (nullfd > 2) |
| 715 | close(nullfd); |
| 716 | } |
| 717 | |
Damien Miller | 1339002 | 2005-07-06 09:44:19 +1000 | [diff] [blame] | 718 | char * |
Damien Miller | 3f94188 | 2006-03-31 23:13:02 +1100 | [diff] [blame] | 719 | tohex(const void *vp, size_t l) |
Damien Miller | 1339002 | 2005-07-06 09:44:19 +1000 | [diff] [blame] | 720 | { |
Damien Miller | 3f94188 | 2006-03-31 23:13:02 +1100 | [diff] [blame] | 721 | const u_char *p = (const u_char *)vp; |
Damien Miller | 1339002 | 2005-07-06 09:44:19 +1000 | [diff] [blame] | 722 | char b[3], *r; |
Damien Miller | 3f94188 | 2006-03-31 23:13:02 +1100 | [diff] [blame] | 723 | size_t i, hl; |
| 724 | |
| 725 | if (l > 65536) |
| 726 | return xstrdup("tohex: length > 65536"); |
Damien Miller | 1339002 | 2005-07-06 09:44:19 +1000 | [diff] [blame] | 727 | |
| 728 | hl = l * 2 + 1; |
Damien Miller | 07d86be | 2006-03-26 14:19:21 +1100 | [diff] [blame] | 729 | r = xcalloc(1, hl); |
Damien Miller | 1339002 | 2005-07-06 09:44:19 +1000 | [diff] [blame] | 730 | for (i = 0; i < l; i++) { |
Damien Miller | 3f94188 | 2006-03-31 23:13:02 +1100 | [diff] [blame] | 731 | snprintf(b, sizeof(b), "%02x", p[i]); |
Damien Miller | 1339002 | 2005-07-06 09:44:19 +1000 | [diff] [blame] | 732 | strlcat(r, b, hl); |
| 733 | } |
| 734 | return (r); |
| 735 | } |
| 736 | |
Damien Miller | 3f94188 | 2006-03-31 23:13:02 +1100 | [diff] [blame] | 737 | u_int64_t |
| 738 | get_u64(const void *vp) |
| 739 | { |
| 740 | const u_char *p = (const u_char *)vp; |
| 741 | u_int64_t v; |
| 742 | |
| 743 | v = (u_int64_t)p[0] << 56; |
| 744 | v |= (u_int64_t)p[1] << 48; |
| 745 | v |= (u_int64_t)p[2] << 40; |
| 746 | v |= (u_int64_t)p[3] << 32; |
| 747 | v |= (u_int64_t)p[4] << 24; |
| 748 | v |= (u_int64_t)p[5] << 16; |
| 749 | v |= (u_int64_t)p[6] << 8; |
| 750 | v |= (u_int64_t)p[7]; |
| 751 | |
| 752 | return (v); |
| 753 | } |
| 754 | |
| 755 | u_int32_t |
| 756 | get_u32(const void *vp) |
| 757 | { |
| 758 | const u_char *p = (const u_char *)vp; |
| 759 | u_int32_t v; |
| 760 | |
| 761 | v = (u_int32_t)p[0] << 24; |
| 762 | v |= (u_int32_t)p[1] << 16; |
| 763 | v |= (u_int32_t)p[2] << 8; |
| 764 | v |= (u_int32_t)p[3]; |
| 765 | |
| 766 | return (v); |
| 767 | } |
| 768 | |
| 769 | u_int16_t |
| 770 | get_u16(const void *vp) |
| 771 | { |
| 772 | const u_char *p = (const u_char *)vp; |
| 773 | u_int16_t v; |
| 774 | |
| 775 | v = (u_int16_t)p[0] << 8; |
| 776 | v |= (u_int16_t)p[1]; |
| 777 | |
| 778 | return (v); |
| 779 | } |
| 780 | |
| 781 | void |
| 782 | put_u64(void *vp, u_int64_t v) |
| 783 | { |
| 784 | u_char *p = (u_char *)vp; |
| 785 | |
| 786 | p[0] = (u_char)(v >> 56) & 0xff; |
| 787 | p[1] = (u_char)(v >> 48) & 0xff; |
| 788 | p[2] = (u_char)(v >> 40) & 0xff; |
| 789 | p[3] = (u_char)(v >> 32) & 0xff; |
| 790 | p[4] = (u_char)(v >> 24) & 0xff; |
| 791 | p[5] = (u_char)(v >> 16) & 0xff; |
| 792 | p[6] = (u_char)(v >> 8) & 0xff; |
| 793 | p[7] = (u_char)v & 0xff; |
| 794 | } |
| 795 | |
| 796 | void |
| 797 | put_u32(void *vp, u_int32_t v) |
| 798 | { |
| 799 | u_char *p = (u_char *)vp; |
| 800 | |
| 801 | p[0] = (u_char)(v >> 24) & 0xff; |
| 802 | p[1] = (u_char)(v >> 16) & 0xff; |
| 803 | p[2] = (u_char)(v >> 8) & 0xff; |
| 804 | p[3] = (u_char)v & 0xff; |
| 805 | } |
| 806 | |
| 807 | |
| 808 | void |
| 809 | put_u16(void *vp, u_int16_t v) |
| 810 | { |
| 811 | u_char *p = (u_char *)vp; |
| 812 | |
| 813 | p[0] = (u_char)(v >> 8) & 0xff; |
| 814 | p[1] = (u_char)v & 0xff; |
| 815 | } |