dumprmt.c revision 59216
1230592Sken/*- 2237683Sken * Copyright (c) 1980, 1993 3230592Sken * The Regents of the University of California. All rights reserved. 4230592Sken * 5230592Sken * Redistribution and use in source and binary forms, with or without 6230592Sken * modification, are permitted provided that the following conditions 7230592Sken * are met: 8230592Sken * 1. Redistributions of source code must retain the above copyright 9230592Sken * notice, this list of conditions and the following disclaimer. 10230592Sken * 2. Redistributions in binary form must reproduce the above copyright 11230592Sken * notice, this list of conditions and the following disclaimer in the 12230592Sken * documentation and/or other materials provided with the distribution. 13230592Sken * 3. All advertising materials mentioning features or use of this software 14230592Sken * must display the following acknowledgement: 15230592Sken * This product includes software developed by the University of 16230592Sken * California, Berkeley and its contributors. 17230592Sken * 4. Neither the name of the University nor the names of its contributors 18230592Sken * may be used to endorse or promote products derived from this software 19230592Sken * without specific prior written permission. 20230592Sken * 21230592Sken * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22230592Sken * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23230592Sken * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24230592Sken * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25230592Sken * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26230592Sken * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27230592Sken * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28230592Sken * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29230592Sken * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30230592Sken * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31230592Sken * SUCH DAMAGE. 32230592Sken */ 33230592Sken 34230592Sken#ifndef lint 35230592Sken#if 0 36230592Skenstatic char sccsid[] = "@(#)dumprmt.c 8.3 (Berkeley) 4/28/95"; 37230592Sken#endif 38230592Skenstatic const char rcsid[] = 39230592Sken "$FreeBSD: head/sbin/dump/dumprmt.c 59216 2000-04-14 06:15:01Z imp $"; 40230592Sken#endif /* not lint */ 41230592Sken 42230592Sken#include <sys/param.h> 43230592Sken#include <sys/mtio.h> 44230592Sken#include <sys/socket.h> 45230592Sken#include <sys/time.h> 46230592Sken#ifdef sunos 47230592Sken#include <sys/vnode.h> 48230592Sken 49230592Sken#include <ufs/inode.h> 50230592Sken#else 51230592Sken#include <ufs/ufs/dinode.h> 52231240Sken#endif 53231240Sken 54230592Sken#include <netinet/in.h> 55230592Sken#include <netinet/in_systm.h> 56231240Sken#include <netinet/ip.h> 57230592Sken#include <netinet/tcp.h> 58230592Sken 59230592Sken#include <protocols/dumprestore.h> 60230592Sken 61230592Sken#include <ctype.h> 62230592Sken#include <netdb.h> 63230592Sken#include <pwd.h> 64230592Sken#include <stdio.h> 65230592Sken#ifdef __STDC__ 66230592Sken#include <errno.h> 67230592Sken#include <stdlib.h> 68230592Sken#include <string.h> 69230592Sken#include <unistd.h> 70230592Sken#endif 71230592Sken 72230592Sken#include "pathnames.h" 73230592Sken#include "dump.h" 74230592Sken 75230592Sken#define TS_CLOSED 0 76230592Sken#define TS_OPEN 1 77230592Sken 78230592Skenstatic int rmtstate = TS_CLOSED; 79230592Skenstatic int rmtape; 80230592Skenstatic char *rmtpeer; 81230592Sken 82230592Skenstatic int okname __P((char *)); 83230592Skenstatic int rmtcall __P((char *, char *)); 84230592Skenstatic void rmtconnaborted __P((/* int, int */)); 85230592Skenstatic int rmtgetb __P((void)); 86230592Skenstatic void rmtgetconn __P((void)); 87230592Skenstatic void rmtgets __P((char *, int)); 88230592Skenstatic int rmtreply __P((char *)); 89230592Sken#ifdef KERBEROS 90230592Skenint krcmd __P((char **, int /*u_short*/, char *, char *, int *, char *)); 91230592Sken#endif 92230592Sken 93230592Skenstatic int errfd = -1; 94230592Skenextern int dokerberos; 95230592Skenextern int ntrec; /* blocking factor on tape */ 96230592Sken 97230592Skenint 98230592Skenrmthost(host) 99230592Sken char *host; 100230592Sken{ 101230592Sken 102230592Sken rmtpeer = malloc(strlen(host) + 1); 103230592Sken if (rmtpeer) 104230592Sken strcpy(rmtpeer, host); 105230592Sken else 106230592Sken rmtpeer = host; 107230592Sken signal(SIGPIPE, rmtconnaborted); 108230592Sken rmtgetconn(); 109230592Sken if (rmtape < 0) 110230592Sken return (0); 111230592Sken return (1); 112230592Sken} 113230592Sken 114230592Skenstatic void 115230592Skenrmtconnaborted() 116230592Sken{ 117230592Sken msg("Lost connection to remote host.\n"); 118230592Sken if (errfd != -1) { 119230592Sken fd_set r; 120230592Sken struct timeval t; 121230592Sken 122230592Sken FD_ZERO(&r); 123230592Sken FD_SET(errfd, &r); 124230592Sken t.tv_sec = 0; 125230592Sken t.tv_usec = 0; 126230592Sken if (select(errfd + 1, &r, NULL, NULL, &t)) { 127230592Sken int i; 128230592Sken char buf[2048]; 129230592Sken 130230592Sken if ((i = read(errfd, buf, sizeof(buf) - 1)) > 0) { 131230592Sken buf[i] = '\0'; 132230592Sken msg("on %s: %s%s", rmtpeer, buf, 133230592Sken buf[i - 1] == '\n' ? "" : "\n"); 134230592Sken } 135230592Sken } 136230592Sken } 137230592Sken 138230592Sken exit(X_ABORT); 139230592Sken} 140230592Sken 141230592Skenvoid 142230592Skenrmtgetconn() 143230592Sken{ 144230592Sken register char *cp; 145230592Sken register const char *rmt; 146230592Sken static struct servent *sp = NULL; 147230592Sken static struct passwd *pwd = NULL; 148230592Sken char *tuser; 149230592Sken int size; 150230592Sken int throughput; 151230592Sken int on; 152230592Sken 153230592Sken if (sp == NULL) { 154230592Sken sp = getservbyname(dokerberos ? "kshell" : "shell", "tcp"); 155230592Sken if (sp == NULL) { 156230592Sken msg("%s/tcp: unknown service\n", 157230592Sken dokerberos ? "kshell" : "shell"); 158230592Sken exit(X_STARTUP); 159230592Sken } 160230592Sken pwd = getpwuid(getuid()); 161254116Sscottl if (pwd == NULL) { 162 msg("who are you?\n"); 163 exit(X_STARTUP); 164 } 165 } 166 if ((cp = strchr(rmtpeer, '@')) != NULL) { 167 tuser = rmtpeer; 168 *cp = '\0'; 169 if (!okname(tuser)) 170 exit(X_STARTUP); 171 rmtpeer = ++cp; 172 } else 173 tuser = pwd->pw_name; 174 if ((rmt = getenv("RMT")) == NULL) 175 rmt = _PATH_RMT; 176 msg(""); 177#ifdef KERBEROS 178 if (dokerberos) 179 rmtape = krcmd(&rmtpeer, sp->s_port, tuser, rmt, &errfd, 180 (char *)0); 181 else 182#endif 183 rmtape = rcmd(&rmtpeer, (u_short)sp->s_port, pwd->pw_name, 184 tuser, rmt, &errfd); 185 if (rmtape < 0) { 186 msg("login to %s as %s failed.\n", rmtpeer, tuser); 187 return; 188 } 189 (void)fprintf(stderr, "Connection to %s established.\n", rmtpeer); 190 size = ntrec * TP_BSIZE; 191 if (size > 60 * 1024) /* XXX */ 192 size = 60 * 1024; 193 /* Leave some space for rmt request/response protocol */ 194 size += 2 * 1024; 195 while (size > TP_BSIZE && 196 setsockopt(rmtape, SOL_SOCKET, SO_SNDBUF, &size, sizeof (size)) < 0) 197 size -= TP_BSIZE; 198 (void)setsockopt(rmtape, SOL_SOCKET, SO_RCVBUF, &size, sizeof (size)); 199 throughput = IPTOS_THROUGHPUT; 200 if (setsockopt(rmtape, IPPROTO_IP, IP_TOS, 201 &throughput, sizeof(throughput)) < 0) 202 perror("IP_TOS:IPTOS_THROUGHPUT setsockopt"); 203 on = 1; 204 if (setsockopt(rmtape, IPPROTO_TCP, TCP_NODELAY, &on, sizeof (on)) < 0) 205 perror("TCP_NODELAY setsockopt"); 206} 207 208static int 209okname(cp0) 210 char *cp0; 211{ 212 register char *cp; 213 register int c; 214 215 for (cp = cp0; *cp; cp++) { 216 c = *cp; 217 if (!isascii(c) || !(isalnum(c) || c == '_' || c == '-')) { 218 msg("invalid user name %s\n", cp0); 219 return (0); 220 } 221 } 222 return (1); 223} 224 225int 226rmtopen(tape, mode) 227 char *tape; 228 int mode; 229{ 230 char buf[256]; 231 232 (void)snprintf(buf, sizeof (buf), "O%.226s\n%d\n", tape, mode); 233 rmtstate = TS_OPEN; 234 return (rmtcall(tape, buf)); 235} 236 237void 238rmtclose() 239{ 240 241 if (rmtstate != TS_OPEN) 242 return; 243 rmtcall("close", "C\n"); 244 rmtstate = TS_CLOSED; 245} 246 247int 248rmtread(buf, count) 249 char *buf; 250 int count; 251{ 252 char line[30]; 253 int n, i, cc; 254 255 (void)snprintf(line, sizeof (line), "R%d\n", count); 256 n = rmtcall("read", line); 257 if (n < 0) 258 /* rmtcall() properly sets errno for us on errors. */ 259 return (n); 260 for (i = 0; i < n; i += cc) { 261 cc = read(rmtape, buf+i, n - i); 262 if (cc <= 0) 263 rmtconnaborted(); 264 } 265 return (n); 266} 267 268int 269rmtwrite(buf, count) 270 char *buf; 271 int count; 272{ 273 char line[30]; 274 275 (void)snprintf(line, sizeof (line), "W%d\n", count); 276 write(rmtape, line, strlen(line)); 277 write(rmtape, buf, count); 278 return (rmtreply("write")); 279} 280 281void 282rmtwrite0(count) 283 int count; 284{ 285 char line[30]; 286 287 (void)snprintf(line, sizeof (line), "W%d\n", count); 288 write(rmtape, line, strlen(line)); 289} 290 291void 292rmtwrite1(buf, count) 293 char *buf; 294 int count; 295{ 296 297 write(rmtape, buf, count); 298} 299 300int 301rmtwrite2() 302{ 303 304 return (rmtreply("write")); 305} 306 307int 308rmtseek(offset, pos) 309 int offset, pos; 310{ 311 char line[80]; 312 313 (void)snprintf(line, sizeof (line), "L%d\n%d\n", offset, pos); 314 return (rmtcall("seek", line)); 315} 316 317struct mtget mts; 318 319struct mtget * 320rmtstatus() 321{ 322 register int i; 323 register char *cp; 324 325 if (rmtstate != TS_OPEN) 326 return (NULL); 327 rmtcall("status", "S\n"); 328 for (i = 0, cp = (char *)&mts; i < sizeof(mts); i++) 329 *cp++ = rmtgetb(); 330 return (&mts); 331} 332 333int 334rmtioctl(cmd, count) 335 int cmd, count; 336{ 337 char buf[256]; 338 339 if (count < 0) 340 return (-1); 341 (void)snprintf(buf, sizeof (buf), "I%d\n%d\n", cmd, count); 342 return (rmtcall("ioctl", buf)); 343} 344 345static int 346rmtcall(cmd, buf) 347 char *cmd, *buf; 348{ 349 350 if (write(rmtape, buf, strlen(buf)) != strlen(buf)) 351 rmtconnaborted(); 352 return (rmtreply(cmd)); 353} 354 355static int 356rmtreply(cmd) 357 char *cmd; 358{ 359 register char *cp; 360 char code[30], emsg[BUFSIZ]; 361 362 rmtgets(code, sizeof (code)); 363 if (*code == 'E' || *code == 'F') { 364 rmtgets(emsg, sizeof (emsg)); 365 msg("%s: %s", cmd, emsg); 366 errno = atoi(code + 1); 367 if (*code == 'F') 368 rmtstate = TS_CLOSED; 369 return (-1); 370 } 371 if (*code != 'A') { 372 /* Kill trailing newline */ 373 cp = code + strlen(code); 374 if (cp > code && *--cp == '\n') 375 *cp = '\0'; 376 377 msg("Protocol to remote tape server botched (code \"%s\").\n", 378 code); 379 rmtconnaborted(); 380 } 381 return (atoi(code + 1)); 382} 383 384int 385rmtgetb() 386{ 387 char c; 388 389 if (read(rmtape, &c, 1) != 1) 390 rmtconnaborted(); 391 return (c); 392} 393 394/* Get a line (guaranteed to have a trailing newline). */ 395void 396rmtgets(line, len) 397 char *line; 398 int len; 399{ 400 register char *cp = line; 401 402 while (len > 1) { 403 *cp = rmtgetb(); 404 if (*cp == '\n') { 405 cp[1] = '\0'; 406 return; 407 } 408 cp++; 409 len--; 410 } 411 *cp = '\0'; 412 msg("Protocol to remote tape server botched.\n"); 413 msg("(rmtgets got \"%s\").\n", line); 414 rmtconnaborted(); 415} 416