Annotation of src/usr.bin/ssh/scp.c, Revision 1.211
1.211 ! millert 1: /* $OpenBSD: scp.c,v 1.210 2020/05/06 20:57:38 djm Exp $ */
1.1 deraadt 2: /*
1.38 deraadt 3: * scp - secure remote copy. This is basically patched BSD rcp which
4: * uses ssh to do the data transfer (instead of using rcmd).
1.27 markus 5: *
1.38 deraadt 6: * NOTE: This version should NOT be suid root. (This uses ssh to
7: * do the transfer and ssh has the necessary privileges.)
1.27 markus 8: *
1.38 deraadt 9: * 1995 Timo Rinne <tri@iki.fi>, Tatu Ylonen <ylo@cs.hut.fi>
10: *
11: * As far as I am concerned, the code I have written for this software
12: * can be used freely for any purpose. Any derived versions of this
13: * software must be clearly marked as such, and if the derived work is
14: * incompatible with the protocol description in the RFC file, it must be
15: * called by a name other than "ssh" or "Secure Shell".
1.39 markus 16: */
1.38 deraadt 17: /*
1.60 deraadt 18: * Copyright (c) 1999 Theo de Raadt. All rights reserved.
19: * Copyright (c) 1999 Aaron Campbell. All rights reserved.
1.27 markus 20: *
1.38 deraadt 21: * Redistribution and use in source and binary forms, with or without
22: * modification, are permitted provided that the following conditions
23: * are met:
24: * 1. Redistributions of source code must retain the above copyright
25: * notice, this list of conditions and the following disclaimer.
26: * 2. Redistributions in binary form must reproduce the above copyright
27: * notice, this list of conditions and the following disclaimer in the
28: * documentation and/or other materials provided with the distribution.
1.27 markus 29: *
1.38 deraadt 30: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
31: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
32: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
33: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
34: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
35: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
36: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
37: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
38: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
39: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
40: */
1.1 deraadt 41:
42: /*
1.35 deraadt 43: * Parts from:
44: *
1.1 deraadt 45: * Copyright (c) 1983, 1990, 1992, 1993, 1995
46: * The Regents of the University of California. All rights reserved.
47: *
48: * Redistribution and use in source and binary forms, with or without
49: * modification, are permitted provided that the following conditions
50: * are met:
51: * 1. Redistributions of source code must retain the above copyright
52: * notice, this list of conditions and the following disclaimer.
53: * 2. Redistributions in binary form must reproduce the above copyright
54: * notice, this list of conditions and the following disclaimer in the
55: * documentation and/or other materials provided with the distribution.
1.103 millert 56: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 57: * may be used to endorse or promote products derived from this software
58: * without specific prior written permission.
59: *
60: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
61: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
62: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
63: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
64: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
65: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
66: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
67: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
68: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
69: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
70: * SUCH DAMAGE.
71: *
72: */
73:
1.132 stevesk 74: #include <sys/types.h>
1.161 djm 75: #include <sys/poll.h>
1.132 stevesk 76: #include <sys/wait.h>
1.134 stevesk 77: #include <sys/stat.h>
1.151 stevesk 78: #include <sys/time.h>
1.155 deraadt 79: #include <sys/uio.h>
1.131 stevesk 80:
1.135 stevesk 81: #include <ctype.h>
1.131 stevesk 82: #include <dirent.h>
1.147 stevesk 83: #include <errno.h>
1.144 stevesk 84: #include <fcntl.h>
1.202 djm 85: #include <fnmatch.h>
1.186 schwarze 86: #include <locale.h>
1.143 stevesk 87: #include <pwd.h>
1.133 stevesk 88: #include <signal.h>
1.146 stevesk 89: #include <stdarg.h>
1.189 millert 90: #include <stdint.h>
1.154 stevesk 91: #include <stdio.h>
1.153 stevesk 92: #include <stdlib.h>
1.150 stevesk 93: #include <string.h>
1.149 stevesk 94: #include <time.h>
1.148 stevesk 95: #include <unistd.h>
1.181 deraadt 96: #include <limits.h>
1.158 dtucker 97: #include <vis.h>
1.1 deraadt 98:
99: #include "xmalloc.h"
1.193 millert 100: #include "ssh.h"
1.51 markus 101: #include "atomicio.h"
1.50 markus 102: #include "pathnames.h"
1.51 markus 103: #include "log.h"
1.69 mouring 104: #include "misc.h"
1.97 fgsch 105: #include "progressmeter.h"
1.186 schwarze 106: #include "utf8.h"
1.1 deraadt 107:
1.161 djm 108: #define COPY_BUFLEN 16384
109:
1.193 millert 110: int do_cmd(char *host, char *remuser, int port, char *cmd, int *fdin, int *fdout);
111: int do_cmd2(char *host, char *remuser, int port, char *cmd, int fdin, int fdout);
1.11 aaron 112:
1.70 mouring 113: /* Struct for addargs */
114: arglist args;
1.168 djm 115: arglist remote_remote_args;
1.41 markus 116:
1.99 markus 117: /* Bandwidth limit */
1.167 djm 118: long long limit_kbps = 0;
119: struct bwlimit bwlimit;
1.99 markus 120:
1.11 aaron 121: /* Name of current file being transferred. */
122: char *curfile;
1.4 aaron 123:
1.1 deraadt 124: /* This is set to non-zero to enable verbose mode. */
1.17 markus 125: int verbose_mode = 0;
1.1 deraadt 126:
1.6 aaron 127: /* This is set to zero if the progressmeter is not desired. */
128: int showprogress = 1;
129:
1.169 markus 130: /*
131: * This is set to non-zero if remote-remote copy should be piped
132: * through this process.
133: */
134: int throughlocal = 0;
135:
1.193 millert 136: /* Non-standard port to use for the ssh connection or -1. */
137: int sshport = -1;
138:
1.34 deraadt 139: /* This is the program to execute for the secured connection. ("ssh" or -S) */
1.50 markus 140: char *ssh_program = _PATH_SSH_PROGRAM;
1.34 deraadt 141:
1.92 markus 142: /* This is used to store the pid of ssh_program */
1.105 djm 143: pid_t do_cmd_pid = -1;
144:
145: static void
146: killchild(int signo)
147: {
1.119 dtucker 148: if (do_cmd_pid > 1) {
1.123 avsm 149: kill(do_cmd_pid, signo ? signo : SIGTERM);
1.119 dtucker 150: waitpid(do_cmd_pid, NULL, 0);
151: }
1.105 djm 152:
1.123 avsm 153: if (signo)
154: _exit(1);
155: exit(1);
1.105 djm 156: }
1.92 markus 157:
1.166 millert 158: static void
159: suspchild(int signo)
160: {
161: int status;
162:
163: if (do_cmd_pid > 1) {
164: kill(do_cmd_pid, signo);
165: while (waitpid(do_cmd_pid, &status, WUNTRACED) == -1 &&
166: errno == EINTR)
167: ;
168: kill(getpid(), SIGSTOP);
169: }
170: }
171:
1.129 djm 172: static int
173: do_local_cmd(arglist *a)
174: {
175: u_int i;
176: int status;
177: pid_t pid;
178:
179: if (a->num == 0)
180: fatal("do_local_cmd: no arguments");
181:
182: if (verbose_mode) {
183: fprintf(stderr, "Executing:");
184: for (i = 0; i < a->num; i++)
1.186 schwarze 185: fmprintf(stderr, " %s", a->list[i]);
1.129 djm 186: fprintf(stderr, "\n");
187: }
188: if ((pid = fork()) == -1)
189: fatal("do_local_cmd: fork: %s", strerror(errno));
190:
191: if (pid == 0) {
192: execvp(a->list[0], a->list);
193: perror(a->list[0]);
194: exit(1);
195: }
196:
197: do_cmd_pid = pid;
1.207 dtucker 198: ssh_signal(SIGTERM, killchild);
199: ssh_signal(SIGINT, killchild);
200: ssh_signal(SIGHUP, killchild);
1.129 djm 201:
202: while (waitpid(pid, &status, 0) == -1)
203: if (errno != EINTR)
204: fatal("do_local_cmd: waitpid: %s", strerror(errno));
205:
206: do_cmd_pid = -1;
207:
208: if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
209: return (-1);
210:
211: return (0);
212: }
213:
1.20 markus 214: /*
215: * This function executes the given command as the specified user on the
216: * given host. This returns < 0 if execution fails, and >= 0 otherwise. This
217: * assigns the input and output file descriptors on success.
218: */
1.1 deraadt 219:
1.27 markus 220: int
1.193 millert 221: do_cmd(char *host, char *remuser, int port, char *cmd, int *fdin, int *fdout)
1.1 deraadt 222: {
1.18 markus 223: int pin[2], pout[2], reserved[2];
224:
225: if (verbose_mode)
1.186 schwarze 226: fmprintf(stderr,
1.78 deraadt 227: "Executing: program %s host %s, user %s, command %s\n",
228: ssh_program, host,
229: remuser ? remuser : "(unspecified)", cmd);
1.18 markus 230:
1.193 millert 231: if (port == -1)
232: port = sshport;
233:
1.20 markus 234: /*
235: * Reserve two descriptors so that the real pipes won't get
236: * descriptors 0 and 1 because that will screw up dup2 below.
237: */
1.205 deraadt 238: if (pipe(reserved) == -1)
1.142 markus 239: fatal("pipe: %s", strerror(errno));
1.18 markus 240:
241: /* Create a socket pair for communicating with ssh. */
1.205 deraadt 242: if (pipe(pin) == -1)
1.18 markus 243: fatal("pipe: %s", strerror(errno));
1.205 deraadt 244: if (pipe(pout) == -1)
1.18 markus 245: fatal("pipe: %s", strerror(errno));
246:
247: /* Free the reserved descriptors. */
248: close(reserved[0]);
249: close(reserved[1]);
1.166 millert 250:
1.207 dtucker 251: ssh_signal(SIGTSTP, suspchild);
252: ssh_signal(SIGTTIN, suspchild);
253: ssh_signal(SIGTTOU, suspchild);
1.18 markus 254:
1.106 nino 255: /* Fork a child to execute the command on the remote host using ssh. */
1.92 markus 256: do_cmd_pid = fork();
257: if (do_cmd_pid == 0) {
1.18 markus 258: /* Child. */
259: close(pin[1]);
260: close(pout[0]);
261: dup2(pin[0], 0);
262: dup2(pout[1], 1);
263: close(pin[0]);
264: close(pout[1]);
265:
1.129 djm 266: replacearg(&args, 0, "%s", ssh_program);
1.193 millert 267: if (port != -1) {
268: addargs(&args, "-p");
269: addargs(&args, "%d", port);
270: }
1.165 guenther 271: if (remuser != NULL) {
272: addargs(&args, "-l");
273: addargs(&args, "%s", remuser);
274: }
275: addargs(&args, "--");
1.70 mouring 276: addargs(&args, "%s", host);
277: addargs(&args, "%s", cmd);
1.18 markus 278:
1.41 markus 279: execvp(ssh_program, args.list);
1.34 deraadt 280: perror(ssh_program);
1.18 markus 281: exit(1);
1.92 markus 282: } else if (do_cmd_pid == -1) {
283: fatal("fork: %s", strerror(errno));
1.18 markus 284: }
285: /* Parent. Close the other side, and return the local side. */
286: close(pin[0]);
287: *fdout = pin[1];
288: close(pout[1]);
289: *fdin = pout[0];
1.207 dtucker 290: ssh_signal(SIGTERM, killchild);
291: ssh_signal(SIGINT, killchild);
292: ssh_signal(SIGHUP, killchild);
1.18 markus 293: return 0;
1.1 deraadt 294: }
295:
1.169 markus 296: /*
1.196 djm 297: * This function executes a command similar to do_cmd(), but expects the
1.169 markus 298: * input and output descriptors to be setup by a previous call to do_cmd().
299: * This way the input and output of two commands can be connected.
300: */
301: int
1.193 millert 302: do_cmd2(char *host, char *remuser, int port, char *cmd, int fdin, int fdout)
1.169 markus 303: {
304: pid_t pid;
305: int status;
306:
307: if (verbose_mode)
1.186 schwarze 308: fmprintf(stderr,
1.169 markus 309: "Executing: 2nd program %s host %s, user %s, command %s\n",
310: ssh_program, host,
311: remuser ? remuser : "(unspecified)", cmd);
312:
1.193 millert 313: if (port == -1)
314: port = sshport;
315:
1.169 markus 316: /* Fork a child to execute the command on the remote host using ssh. */
317: pid = fork();
318: if (pid == 0) {
319: dup2(fdin, 0);
320: dup2(fdout, 1);
321:
322: replacearg(&args, 0, "%s", ssh_program);
1.193 millert 323: if (port != -1) {
324: addargs(&args, "-p");
325: addargs(&args, "%d", port);
326: }
1.169 markus 327: if (remuser != NULL) {
328: addargs(&args, "-l");
329: addargs(&args, "%s", remuser);
330: }
1.208 markus 331: addargs(&args, "-oBatchMode=yes");
1.169 markus 332: addargs(&args, "--");
333: addargs(&args, "%s", host);
334: addargs(&args, "%s", cmd);
335:
336: execvp(ssh_program, args.list);
337: perror(ssh_program);
338: exit(1);
339: } else if (pid == -1) {
340: fatal("fork: %s", strerror(errno));
341: }
342: while (waitpid(pid, &status, 0) == -1)
343: if (errno != EINTR)
344: fatal("do_cmd2: waitpid: %s", strerror(errno));
345: return 0;
346: }
347:
1.1 deraadt 348: typedef struct {
1.124 djm 349: size_t cnt;
1.1 deraadt 350: char *buf;
351: } BUF;
352:
1.18 markus 353: BUF *allocbuf(BUF *, int, int);
354: void lostconn(int);
355: int okname(char *);
1.211 ! millert 356: void run_err(const char *,...)
! 357: __attribute__((__format__ (printf, 1, 2)))
! 358: __attribute__((__nonnull__ (1)));
! 359: int note_err(const char *,...)
! 360: __attribute__((__format__ (printf, 1, 2)));
1.18 markus 361: void verifydir(char *);
1.1 deraadt 362:
363: struct passwd *pwd;
1.18 markus 364: uid_t userid;
1.1 deraadt 365: int errs, remin, remout;
1.202 djm 366: int Tflag, pflag, iamremote, iamrecursive, targetshouldbedirectory;
1.1 deraadt 367:
368: #define CMDNEEDS 64
369: char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */
370:
1.18 markus 371: int response(void);
372: void rsource(char *, struct stat *);
1.202 djm 373: void sink(int, char *[], const char *);
1.18 markus 374: void source(int, char *[]);
375: void tolocal(int, char *[]);
1.193 millert 376: void toremote(int, char *[]);
1.18 markus 377: void usage(void);
1.1 deraadt 378:
379: int
1.104 djm 380: main(int argc, char **argv)
1.1 deraadt 381: {
1.145 djm 382: int ch, fflag, tflag, status, n;
1.193 millert 383: char **newargv;
1.167 djm 384: const char *errstr;
1.1 deraadt 385: extern char *optarg;
386: extern int optind;
1.126 djm 387:
388: /* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */
389: sanitise_stdfd();
1.145 djm 390:
1.186 schwarze 391: setlocale(LC_CTYPE, "");
392:
1.145 djm 393: /* Copy argv, because we modify it */
1.187 deraadt 394: newargv = xcalloc(MAXIMUM(argc + 1, 1), sizeof(*newargv));
1.145 djm 395: for (n = 0; n < argc; n++)
396: newargv[n] = xstrdup(argv[n]);
397: argv = newargv;
1.1 deraadt 398:
1.129 djm 399: memset(&args, '\0', sizeof(args));
1.168 djm 400: memset(&remote_remote_args, '\0', sizeof(remote_remote_args));
401: args.list = remote_remote_args.list = NULL;
1.129 djm 402: addargs(&args, "%s", ssh_program);
1.70 mouring 403: addargs(&args, "-x");
1.168 djm 404: addargs(&args, "-oForwardAgent=no");
405: addargs(&args, "-oPermitLocalCommand=no");
406: addargs(&args, "-oClearAllForwardings=yes");
1.195 djm 407: addargs(&args, "-oRemoteCommand=none");
408: addargs(&args, "-oRequestTTY=no");
1.41 markus 409:
1.202 djm 410: fflag = Tflag = tflag = 0;
411: while ((ch = getopt(argc, argv,
412: "dfl:prtTvBCc:i:P:q12346S:o:F:J:")) != -1) {
1.18 markus 413: switch (ch) {
414: /* User-visible flags. */
1.100 markus 415: case '1':
1.190 djm 416: fatal("SSH protocol v.1 is no longer supported");
417: break;
1.100 markus 418: case '2':
1.190 djm 419: /* Ignored */
420: break;
1.23 markus 421: case '4':
1.41 markus 422: case '6':
423: case 'C':
1.70 mouring 424: addargs(&args, "-%c", ch);
1.168 djm 425: addargs(&remote_remote_args, "-%c", ch);
1.41 markus 426: break;
1.169 markus 427: case '3':
428: throughlocal = 1;
429: break;
1.41 markus 430: case 'o':
431: case 'c':
432: case 'i':
1.83 stevesk 433: case 'F':
1.199 tb 434: case 'J':
1.168 djm 435: addargs(&remote_remote_args, "-%c", ch);
436: addargs(&remote_remote_args, "%s", optarg);
1.165 guenther 437: addargs(&args, "-%c", ch);
438: addargs(&args, "%s", optarg);
1.23 markus 439: break;
1.41 markus 440: case 'P':
1.193 millert 441: sshport = a2port(optarg);
442: if (sshport <= 0)
443: fatal("bad port \"%s\"\n", optarg);
1.41 markus 444: break;
445: case 'B':
1.168 djm 446: addargs(&remote_remote_args, "-oBatchmode=yes");
447: addargs(&args, "-oBatchmode=yes");
1.23 markus 448: break;
1.99 markus 449: case 'l':
1.167 djm 450: limit_kbps = strtonum(optarg, 1, 100 * 1024 * 1024,
451: &errstr);
452: if (errstr != NULL)
1.99 markus 453: usage();
1.167 djm 454: limit_kbps *= 1024; /* kbps */
455: bandwidth_limit_init(&bwlimit, limit_kbps, COPY_BUFLEN);
1.99 markus 456: break;
1.1 deraadt 457: case 'p':
458: pflag = 1;
459: break;
460: case 'r':
461: iamrecursive = 1;
462: break;
1.34 deraadt 463: case 'S':
1.41 markus 464: ssh_program = xstrdup(optarg);
465: break;
466: case 'v':
1.72 markus 467: addargs(&args, "-v");
1.168 djm 468: addargs(&remote_remote_args, "-v");
1.41 markus 469: verbose_mode = 1;
470: break;
471: case 'q':
1.111 dtucker 472: addargs(&args, "-q");
1.168 djm 473: addargs(&remote_remote_args, "-q");
1.41 markus 474: showprogress = 0;
1.34 deraadt 475: break;
476:
1.18 markus 477: /* Server options. */
1.1 deraadt 478: case 'd':
479: targetshouldbedirectory = 1;
480: break;
1.18 markus 481: case 'f': /* "from" */
1.1 deraadt 482: iamremote = 1;
483: fflag = 1;
484: break;
1.18 markus 485: case 't': /* "to" */
1.1 deraadt 486: iamremote = 1;
487: tflag = 1;
488: break;
1.202 djm 489: case 'T':
490: Tflag = 1;
491: break;
1.1 deraadt 492: default:
493: usage();
494: }
1.202 djm 495: }
1.1 deraadt 496: argc -= optind;
497: argv += optind;
498:
499: if ((pwd = getpwuid(userid = getuid())) == NULL)
1.108 deraadt 500: fatal("unknown user %u", (u_int) userid);
1.1 deraadt 501:
1.156 djm 502: if (!isatty(STDOUT_FILENO))
1.7 deraadt 503: showprogress = 0;
1.184 deraadt 504:
505: if (pflag) {
506: /* Cannot pledge: -p allows setuid/setgid files... */
507: } else {
508: if (pledge("stdio rpath wpath cpath fattr tty proc exec",
509: NULL) == -1) {
510: perror("pledge");
511: exit(1);
512: }
513: }
1.7 deraadt 514:
1.1 deraadt 515: remin = STDIN_FILENO;
516: remout = STDOUT_FILENO;
517:
1.52 stevesk 518: if (fflag) {
1.18 markus 519: /* Follow "protocol", send data. */
520: (void) response();
1.1 deraadt 521: source(argc, argv);
522: exit(errs != 0);
523: }
1.18 markus 524: if (tflag) {
525: /* Receive data. */
1.202 djm 526: sink(argc, argv, NULL);
1.1 deraadt 527: exit(errs != 0);
528: }
529: if (argc < 2)
530: usage();
531: if (argc > 2)
532: targetshouldbedirectory = 1;
533:
534: remin = remout = -1;
1.92 markus 535: do_cmd_pid = -1;
1.1 deraadt 536: /* Command to be executed on remote system using "ssh". */
1.55 deraadt 537: (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s",
538: verbose_mode ? " -v" : "",
1.35 deraadt 539: iamrecursive ? " -r" : "", pflag ? " -p" : "",
540: targetshouldbedirectory ? " -d" : "");
1.1 deraadt 541:
1.207 dtucker 542: (void) ssh_signal(SIGPIPE, lostconn);
1.1 deraadt 543:
1.193 millert 544: if (colon(argv[argc - 1])) /* Dest is remote host. */
545: toremote(argc, argv);
1.1 deraadt 546: else {
547: if (targetshouldbedirectory)
548: verifydir(argv[argc - 1]);
1.130 djm 549: tolocal(argc, argv); /* Dest is local host. */
1.92 markus 550: }
551: /*
552: * Finally check the exit status of the ssh process, if one was forked
1.164 stevesk 553: * and no error has occurred yet
1.92 markus 554: */
555: if (do_cmd_pid != -1 && errs == 0) {
556: if (remin != -1)
557: (void) close(remin);
558: if (remout != -1)
559: (void) close(remout);
560: if (waitpid(do_cmd_pid, &status, 0) == -1)
561: errs = 1;
562: else {
563: if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
564: errs = 1;
565: }
1.1 deraadt 566: }
567: exit(errs != 0);
568: }
569:
1.167 djm 570: /* Callback from atomicio6 to update progress meter and limit bandwidth */
571: static int
572: scpio(void *_cnt, size_t s)
1.161 djm 573: {
1.167 djm 574: off_t *cnt = (off_t *)_cnt;
575:
576: *cnt += s;
1.201 dtucker 577: refresh_progress_meter(0);
1.167 djm 578: if (limit_kbps > 0)
579: bandwidth_limit(&bwlimit, s);
580: return 0;
1.161 djm 581: }
582:
1.176 guenther 583: static int
584: do_times(int fd, int verb, const struct stat *sb)
585: {
586: /* strlen(2^64) == 20; strlen(10^6) == 7 */
587: char buf[(20 + 7 + 2) * 2 + 2];
588:
589: (void)snprintf(buf, sizeof(buf), "T%llu 0 %llu 0\n",
590: (unsigned long long) (sb->st_mtime < 0 ? 0 : sb->st_mtime),
591: (unsigned long long) (sb->st_atime < 0 ? 0 : sb->st_atime));
592: if (verb) {
593: fprintf(stderr, "File mtime %lld atime %lld\n",
594: (long long)sb->st_mtime, (long long)sb->st_atime);
595: fprintf(stderr, "Sending file timestamps: %s", buf);
596: }
597: (void) atomicio(vwrite, fd, buf, strlen(buf));
598: return (response());
599: }
600:
1.194 millert 601: static int
602: parse_scp_uri(const char *uri, char **userp, char **hostp, int *portp,
603: char **pathp)
604: {
605: int r;
606:
607: r = parse_uri("scp", uri, userp, hostp, portp, pathp);
608: if (r == 0 && *pathp == NULL)
609: *pathp = xstrdup(".");
610: return r;
611: }
612:
1.204 djm 613: /* Appends a string to an array; returns 0 on success, -1 on alloc failure */
614: static int
615: append(char *cp, char ***ap, size_t *np)
616: {
617: char **tmp;
618:
619: if ((tmp = reallocarray(*ap, *np + 1, sizeof(*tmp))) == NULL)
620: return -1;
621: tmp[(*np)] = cp;
622: (*np)++;
623: *ap = tmp;
624: return 0;
625: }
626:
627: /*
628: * Finds the start and end of the first brace pair in the pattern.
629: * returns 0 on success or -1 for invalid patterns.
630: */
631: static int
632: find_brace(const char *pattern, int *startp, int *endp)
633: {
634: int i;
635: int in_bracket, brace_level;
636:
637: *startp = *endp = -1;
638: in_bracket = brace_level = 0;
639: for (i = 0; i < INT_MAX && *endp < 0 && pattern[i] != '\0'; i++) {
640: switch (pattern[i]) {
641: case '\\':
642: /* skip next character */
643: if (pattern[i + 1] != '\0')
644: i++;
645: break;
646: case '[':
647: in_bracket = 1;
648: break;
649: case ']':
650: in_bracket = 0;
651: break;
652: case '{':
653: if (in_bracket)
654: break;
655: if (pattern[i + 1] == '}') {
656: /* Protect a single {}, for find(1), like csh */
657: i++; /* skip */
658: break;
659: }
660: if (*startp == -1)
661: *startp = i;
662: brace_level++;
663: break;
664: case '}':
665: if (in_bracket)
666: break;
667: if (*startp < 0) {
668: /* Unbalanced brace */
669: return -1;
670: }
671: if (--brace_level <= 0)
672: *endp = i;
673: break;
674: }
675: }
676: /* unbalanced brackets/braces */
677: if (*endp < 0 && (*startp >= 0 || in_bracket))
678: return -1;
679: return 0;
680: }
681:
682: /*
683: * Assembles and records a successfully-expanded pattern, returns -1 on
684: * alloc failure.
685: */
686: static int
687: emit_expansion(const char *pattern, int brace_start, int brace_end,
688: int sel_start, int sel_end, char ***patternsp, size_t *npatternsp)
689: {
690: char *cp;
691: int o = 0, tail_len = strlen(pattern + brace_end + 1);
692:
693: if ((cp = malloc(brace_start + (sel_end - sel_start) +
694: tail_len + 1)) == NULL)
695: return -1;
696:
697: /* Pattern before initial brace */
698: if (brace_start > 0) {
699: memcpy(cp, pattern, brace_start);
700: o = brace_start;
701: }
702: /* Current braced selection */
703: if (sel_end - sel_start > 0) {
704: memcpy(cp + o, pattern + sel_start,
705: sel_end - sel_start);
706: o += sel_end - sel_start;
707: }
708: /* Remainder of pattern after closing brace */
709: if (tail_len > 0) {
710: memcpy(cp + o, pattern + brace_end + 1, tail_len);
711: o += tail_len;
712: }
713: cp[o] = '\0';
714: if (append(cp, patternsp, npatternsp) != 0) {
715: free(cp);
716: return -1;
717: }
718: return 0;
719: }
720:
721: /*
722: * Expand the first encountered brace in pattern, appending the expanded
723: * patterns it yielded to the *patternsp array.
724: *
725: * Returns 0 on success or -1 on allocation failure.
726: *
727: * Signals whether expansion was performed via *expanded and whether
728: * pattern was invalid via *invalid.
729: */
730: static int
731: brace_expand_one(const char *pattern, char ***patternsp, size_t *npatternsp,
732: int *expanded, int *invalid)
733: {
734: int i;
735: int in_bracket, brace_start, brace_end, brace_level;
736: int sel_start, sel_end;
737:
738: *invalid = *expanded = 0;
739:
740: if (find_brace(pattern, &brace_start, &brace_end) != 0) {
741: *invalid = 1;
742: return 0;
743: } else if (brace_start == -1)
744: return 0;
745:
746: in_bracket = brace_level = 0;
747: for (i = sel_start = brace_start + 1; i < brace_end; i++) {
748: switch (pattern[i]) {
749: case '{':
750: if (in_bracket)
751: break;
752: brace_level++;
753: break;
754: case '}':
755: if (in_bracket)
756: break;
757: brace_level--;
758: break;
759: case '[':
760: in_bracket = 1;
761: break;
762: case ']':
763: in_bracket = 0;
764: break;
765: case '\\':
766: if (i < brace_end - 1)
767: i++; /* skip */
768: break;
769: }
770: if (pattern[i] == ',' || i == brace_end - 1) {
771: if (in_bracket || brace_level > 0)
772: continue;
773: /* End of a selection, emit an expanded pattern */
774:
775: /* Adjust end index for last selection */
776: sel_end = (i == brace_end - 1) ? brace_end : i;
777: if (emit_expansion(pattern, brace_start, brace_end,
778: sel_start, sel_end, patternsp, npatternsp) != 0)
779: return -1;
780: /* move on to the next selection */
781: sel_start = i + 1;
782: continue;
783: }
784: }
785: if (in_bracket || brace_level > 0) {
786: *invalid = 1;
787: return 0;
788: }
789: /* success */
790: *expanded = 1;
791: return 0;
792: }
793:
794: /* Expand braces from pattern. Returns 0 on success, -1 on failure */
795: static int
796: brace_expand(const char *pattern, char ***patternsp, size_t *npatternsp)
797: {
798: char *cp, *cp2, **active = NULL, **done = NULL;
799: size_t i, nactive = 0, ndone = 0;
800: int ret = -1, invalid = 0, expanded = 0;
801:
802: *patternsp = NULL;
803: *npatternsp = 0;
804:
805: /* Start the worklist with the original pattern */
806: if ((cp = strdup(pattern)) == NULL)
807: return -1;
808: if (append(cp, &active, &nactive) != 0) {
809: free(cp);
810: return -1;
811: }
812: while (nactive > 0) {
813: cp = active[nactive - 1];
814: nactive--;
815: if (brace_expand_one(cp, &active, &nactive,
816: &expanded, &invalid) == -1) {
817: free(cp);
818: goto fail;
819: }
820: if (invalid)
821: fatal("%s: invalid brace pattern \"%s\"", __func__, cp);
822: if (expanded) {
823: /*
824: * Current entry expanded to new entries on the
825: * active list; discard the progenitor pattern.
826: */
827: free(cp);
828: continue;
829: }
830: /*
831: * Pattern did not expand; append the finename component to
832: * the completed list
833: */
834: if ((cp2 = strrchr(cp, '/')) != NULL)
835: *cp2++ = '\0';
836: else
837: cp2 = cp;
838: if (append(xstrdup(cp2), &done, &ndone) != 0) {
839: free(cp);
840: goto fail;
841: }
842: free(cp);
843: }
844: /* success */
845: *patternsp = done;
846: *npatternsp = ndone;
847: done = NULL;
848: ndone = 0;
849: ret = 0;
850: fail:
851: for (i = 0; i < nactive; i++)
852: free(active[i]);
853: free(active);
854: for (i = 0; i < ndone; i++)
855: free(done[i]);
856: free(done);
857: return ret;
858: }
859:
1.1 deraadt 860: void
1.193 millert 861: toremote(int argc, char **argv)
1.1 deraadt 862: {
1.193 millert 863: char *suser = NULL, *host = NULL, *src = NULL;
864: char *bp, *tuser, *thost, *targ;
865: int sport = -1, tport = -1;
1.129 djm 866: arglist alist;
1.193 millert 867: int i, r;
1.168 djm 868: u_int j;
1.129 djm 869:
870: memset(&alist, '\0', sizeof(alist));
871: alist.list = NULL;
1.1 deraadt 872:
1.193 millert 873: /* Parse target */
1.194 millert 874: r = parse_scp_uri(argv[argc - 1], &tuser, &thost, &tport, &targ);
875: if (r == -1) {
876: fmprintf(stderr, "%s: invalid uri\n", argv[argc - 1]);
877: ++errs;
878: goto out;
879: }
1.193 millert 880: if (r != 0) {
881: if (parse_user_host_path(argv[argc - 1], &tuser, &thost,
1.194 millert 882: &targ) == -1) {
883: fmprintf(stderr, "%s: invalid target\n", argv[argc - 1]);
884: ++errs;
1.193 millert 885: goto out;
1.194 millert 886: }
1.129 djm 887: }
1.194 millert 888: if (tuser != NULL && !okname(tuser)) {
889: ++errs;
1.193 millert 890: goto out;
1.194 millert 891: }
1.129 djm 892:
1.193 millert 893: /* Parse source files */
1.1 deraadt 894: for (i = 0; i < argc - 1; i++) {
1.193 millert 895: free(suser);
896: free(host);
897: free(src);
1.194 millert 898: r = parse_scp_uri(argv[i], &suser, &host, &sport, &src);
899: if (r == -1) {
900: fmprintf(stderr, "%s: invalid uri\n", argv[i]);
901: ++errs;
902: continue;
903: }
904: if (r != 0) {
1.193 millert 905: parse_user_host_path(argv[i], &suser, &host, &src);
1.194 millert 906: }
1.193 millert 907: if (suser != NULL && !okname(suser)) {
908: ++errs;
909: continue;
910: }
911: if (host && throughlocal) { /* extended remote to remote */
1.171 djm 912: xasprintf(&bp, "%s -f %s%s", cmd,
913: *src == '-' ? "-- " : "", src);
1.193 millert 914: if (do_cmd(host, suser, sport, bp, &remin, &remout) < 0)
1.169 markus 915: exit(1);
1.173 djm 916: free(bp);
1.171 djm 917: xasprintf(&bp, "%s -t %s%s", cmd,
918: *targ == '-' ? "-- " : "", targ);
1.193 millert 919: if (do_cmd2(thost, tuser, tport, bp, remin, remout) < 0)
1.169 markus 920: exit(1);
1.173 djm 921: free(bp);
1.169 markus 922: (void) close(remin);
923: (void) close(remout);
924: remin = remout = -1;
1.193 millert 925: } else if (host) { /* standard remote to remote */
926: if (tport != -1 && tport != SSH_DEFAULT_PORT) {
927: /* This would require the remote support URIs */
928: fatal("target port not supported with two "
929: "remote hosts without the -3 option");
930: }
931:
1.129 djm 932: freeargs(&alist);
933: addargs(&alist, "%s", ssh_program);
934: addargs(&alist, "-x");
1.168 djm 935: addargs(&alist, "-oClearAllForwardings=yes");
1.129 djm 936: addargs(&alist, "-n");
1.168 djm 937: for (j = 0; j < remote_remote_args.num; j++) {
938: addargs(&alist, "%s",
939: remote_remote_args.list[j]);
940: }
1.193 millert 941:
942: if (sport != -1) {
943: addargs(&alist, "-p");
944: addargs(&alist, "%d", sport);
945: }
946: if (suser) {
1.129 djm 947: addargs(&alist, "-l");
948: addargs(&alist, "%s", suser);
1.23 markus 949: }
1.165 guenther 950: addargs(&alist, "--");
1.129 djm 951: addargs(&alist, "%s", host);
952: addargs(&alist, "%s", cmd);
953: addargs(&alist, "%s", src);
954: addargs(&alist, "%s%s%s:%s",
955: tuser ? tuser : "", tuser ? "@" : "",
956: thost, targ);
957: if (do_local_cmd(&alist) != 0)
1.109 markus 958: errs = 1;
1.18 markus 959: } else { /* local to remote */
1.1 deraadt 960: if (remin == -1) {
1.171 djm 961: xasprintf(&bp, "%s -t %s%s", cmd,
962: *targ == '-' ? "-- " : "", targ);
1.193 millert 963: if (do_cmd(thost, tuser, tport, bp, &remin,
1.140 deraadt 964: &remout) < 0)
1.18 markus 965: exit(1);
1.1 deraadt 966: if (response() < 0)
967: exit(1);
1.173 djm 968: free(bp);
1.1 deraadt 969: }
1.18 markus 970: source(1, argv + i);
1.1 deraadt 971: }
972: }
1.193 millert 973: out:
974: free(tuser);
975: free(thost);
976: free(targ);
977: free(suser);
978: free(host);
979: free(src);
1.1 deraadt 980: }
981:
982: void
1.104 djm 983: tolocal(int argc, char **argv)
1.1 deraadt 984: {
1.193 millert 985: char *bp, *host = NULL, *src = NULL, *suser = NULL;
1.129 djm 986: arglist alist;
1.193 millert 987: int i, r, sport = -1;
1.129 djm 988:
989: memset(&alist, '\0', sizeof(alist));
990: alist.list = NULL;
1.1 deraadt 991:
992: for (i = 0; i < argc - 1; i++) {
1.193 millert 993: free(suser);
994: free(host);
995: free(src);
1.194 millert 996: r = parse_scp_uri(argv[i], &suser, &host, &sport, &src);
1.193 millert 997: if (r == -1) {
1.194 millert 998: fmprintf(stderr, "%s: invalid uri\n", argv[i]);
1.193 millert 999: ++errs;
1000: continue;
1001: }
1002: if (r != 0)
1003: parse_user_host_path(argv[i], &suser, &host, &src);
1004: if (suser != NULL && !okname(suser)) {
1005: ++errs;
1006: continue;
1007: }
1008: if (!host) { /* Local to local. */
1.129 djm 1009: freeargs(&alist);
1010: addargs(&alist, "%s", _PATH_CP);
1011: if (iamrecursive)
1012: addargs(&alist, "-r");
1013: if (pflag)
1014: addargs(&alist, "-p");
1.165 guenther 1015: addargs(&alist, "--");
1.129 djm 1016: addargs(&alist, "%s", argv[i]);
1017: addargs(&alist, "%s", argv[argc-1]);
1018: if (do_local_cmd(&alist))
1.1 deraadt 1019: ++errs;
1020: continue;
1021: }
1.193 millert 1022: /* Remote to local. */
1.171 djm 1023: xasprintf(&bp, "%s -f %s%s",
1024: cmd, *src == '-' ? "-- " : "", src);
1.193 millert 1025: if (do_cmd(host, suser, sport, bp, &remin, &remout) < 0) {
1.173 djm 1026: free(bp);
1.18 markus 1027: ++errs;
1028: continue;
1.1 deraadt 1029: }
1.173 djm 1030: free(bp);
1.202 djm 1031: sink(1, argv + argc - 1, src);
1.18 markus 1032: (void) close(remin);
1.1 deraadt 1033: remin = remout = -1;
1034: }
1.193 millert 1035: free(suser);
1036: free(host);
1037: free(src);
1.1 deraadt 1038: }
1039:
1040: void
1.104 djm 1041: source(int argc, char **argv)
1.1 deraadt 1042: {
1043: struct stat stb;
1044: static BUF buffer;
1045: BUF *bp;
1.163 dtucker 1046: off_t i, statbytes;
1.180 djm 1047: size_t amt, nr;
1.125 dtucker 1048: int fd = -1, haderr, indx;
1.206 dtucker 1049: char *last, *name, buf[PATH_MAX + 128], encname[PATH_MAX];
1.65 deraadt 1050: int len;
1.1 deraadt 1051:
1052: for (indx = 0; indx < argc; ++indx) {
1.18 markus 1053: name = argv[indx];
1.11 aaron 1054: statbytes = 0;
1.65 deraadt 1055: len = strlen(name);
1056: while (len > 1 && name[len-1] == '/')
1057: name[--len] = '\0';
1.205 deraadt 1058: if ((fd = open(name, O_RDONLY|O_NONBLOCK, 0)) == -1)
1.158 dtucker 1059: goto syserr;
1.85 markus 1060: if (strchr(name, '\n') != NULL) {
1.158 dtucker 1061: strnvis(encname, name, sizeof(encname), VIS_NL);
1062: name = encname;
1.85 markus 1063: }
1.205 deraadt 1064: if (fstat(fd, &stb) == -1) {
1.1 deraadt 1065: syserr: run_err("%s: %s", name, strerror(errno));
1066: goto next;
1067: }
1.163 dtucker 1068: if (stb.st_size < 0) {
1069: run_err("%s: %s", name, "Negative file size");
1070: goto next;
1071: }
1.157 djm 1072: unset_nonblock(fd);
1.1 deraadt 1073: switch (stb.st_mode & S_IFMT) {
1074: case S_IFREG:
1075: break;
1076: case S_IFDIR:
1077: if (iamrecursive) {
1078: rsource(name, &stb);
1079: goto next;
1080: }
1081: /* FALLTHROUGH */
1082: default:
1083: run_err("%s: not a regular file", name);
1084: goto next;
1085: }
1086: if ((last = strrchr(name, '/')) == NULL)
1087: last = name;
1088: else
1089: ++last;
1.11 aaron 1090: curfile = last;
1.1 deraadt 1091: if (pflag) {
1.176 guenther 1092: if (do_times(remout, verbose_mode, &stb) < 0)
1.1 deraadt 1093: goto next;
1094: }
1095: #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
1.61 markus 1096: snprintf(buf, sizeof buf, "C%04o %lld %s\n",
1.47 markus 1097: (u_int) (stb.st_mode & FILEMODEMASK),
1.62 markus 1098: (long long)stb.st_size, last);
1.186 schwarze 1099: if (verbose_mode)
1100: fmprintf(stderr, "Sending file modes: %s", buf);
1.107 deraadt 1101: (void) atomicio(vwrite, remout, buf, strlen(buf));
1.1 deraadt 1102: if (response() < 0)
1103: goto next;
1.161 djm 1104: if ((bp = allocbuf(&buffer, fd, COPY_BUFLEN)) == NULL) {
1.127 deraadt 1105: next: if (fd != -1) {
1106: (void) close(fd);
1107: fd = -1;
1108: }
1.1 deraadt 1109: continue;
1110: }
1.97 fgsch 1111: if (showprogress)
1112: start_progress_meter(curfile, stb.st_size, &statbytes);
1.161 djm 1113: set_nonblock(remout);
1.1 deraadt 1114: for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
1115: amt = bp->cnt;
1.163 dtucker 1116: if (i + (off_t)amt > stb.st_size)
1.1 deraadt 1117: amt = stb.st_size - i;
1118: if (!haderr) {
1.180 djm 1119: if ((nr = atomicio(read, fd,
1120: bp->buf, amt)) != amt) {
1.122 avsm 1121: haderr = errno;
1.180 djm 1122: memset(bp->buf + nr, 0, amt - nr);
1123: }
1.1 deraadt 1124: }
1.161 djm 1125: /* Keep writing after error to retain sync */
1126: if (haderr) {
1127: (void)atomicio(vwrite, remout, bp->buf, amt);
1.180 djm 1128: memset(bp->buf, 0, amt);
1.161 djm 1129: continue;
1.1 deraadt 1130: }
1.167 djm 1131: if (atomicio6(vwrite, remout, bp->buf, amt, scpio,
1.161 djm 1132: &statbytes) != amt)
1133: haderr = errno;
1.1 deraadt 1134: }
1.161 djm 1135: unset_nonblock(remout);
1.4 aaron 1136:
1.127 deraadt 1137: if (fd != -1) {
1.205 deraadt 1138: if (close(fd) == -1 && !haderr)
1.127 deraadt 1139: haderr = errno;
1140: fd = -1;
1141: }
1.1 deraadt 1142: if (!haderr)
1.107 deraadt 1143: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 1144: else
1145: run_err("%s: %s", name, strerror(haderr));
1.18 markus 1146: (void) response();
1.185 dtucker 1147: if (showprogress)
1148: stop_progress_meter();
1.1 deraadt 1149: }
1150: }
1151:
1152: void
1.104 djm 1153: rsource(char *name, struct stat *statp)
1.1 deraadt 1154: {
1155: DIR *dirp;
1156: struct dirent *dp;
1.181 deraadt 1157: char *last, *vect[1], path[PATH_MAX];
1.1 deraadt 1158:
1159: if (!(dirp = opendir(name))) {
1160: run_err("%s: %s", name, strerror(errno));
1161: return;
1162: }
1163: last = strrchr(name, '/');
1.183 mmcc 1164: if (last == NULL)
1.1 deraadt 1165: last = name;
1166: else
1167: last++;
1168: if (pflag) {
1.176 guenther 1169: if (do_times(remout, verbose_mode, statp) < 0) {
1.1 deraadt 1170: closedir(dirp);
1171: return;
1172: }
1173: }
1.55 deraadt 1174: (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n",
1.47 markus 1175: (u_int) (statp->st_mode & FILEMODEMASK), 0, last);
1.18 markus 1176: if (verbose_mode)
1.186 schwarze 1177: fmprintf(stderr, "Entering directory: %s", path);
1.107 deraadt 1178: (void) atomicio(vwrite, remout, path, strlen(path));
1.1 deraadt 1179: if (response() < 0) {
1180: closedir(dirp);
1181: return;
1182: }
1.63 stevesk 1183: while ((dp = readdir(dirp)) != NULL) {
1.1 deraadt 1184: if (dp->d_ino == 0)
1185: continue;
1186: if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
1187: continue;
1188: if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) {
1189: run_err("%s/%s: name too long", name, dp->d_name);
1190: continue;
1191: }
1.55 deraadt 1192: (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name);
1.1 deraadt 1193: vect[0] = path;
1194: source(1, vect);
1195: }
1.18 markus 1196: (void) closedir(dirp);
1.107 deraadt 1197: (void) atomicio(vwrite, remout, "E\n", 2);
1.18 markus 1198: (void) response();
1.1 deraadt 1199: }
1200:
1.189 millert 1201: #define TYPE_OVERFLOW(type, val) \
1202: ((sizeof(type) == 4 && (val) > INT32_MAX) || \
1203: (sizeof(type) == 8 && (val) > INT64_MAX) || \
1204: (sizeof(type) != 4 && sizeof(type) != 8))
1205:
1.1 deraadt 1206: void
1.202 djm 1207: sink(int argc, char **argv, const char *src)
1.1 deraadt 1208: {
1209: static BUF buffer;
1210: struct stat stb;
1211: BUF *bp;
1.122 avsm 1212: off_t i;
1.124 djm 1213: size_t j, count;
1.140 deraadt 1214: int amt, exists, first, ofd;
1215: mode_t mode, omode, mask;
1.97 fgsch 1216: off_t size, statbytes;
1.176 guenther 1217: unsigned long long ull;
1.209 djm 1218: int setimes, targisdir, wrerr;
1.186 schwarze 1219: char ch, *cp, *np, *targ, *why, *vect[1], buf[2048], visbuf[2048];
1.204 djm 1220: char **patterns = NULL;
1221: size_t n, npatterns = 0;
1.40 markus 1222: struct timeval tv[2];
1.1 deraadt 1223:
1.66 stevesk 1224: #define atime tv[0]
1225: #define mtime tv[1]
1.118 deraadt 1226: #define SCREWUP(str) { why = str; goto screwup; }
1.1 deraadt 1227:
1.189 millert 1228: if (TYPE_OVERFLOW(time_t, 0) || TYPE_OVERFLOW(off_t, 0))
1229: SCREWUP("Unexpected off_t/time_t size");
1230:
1.1 deraadt 1231: setimes = targisdir = 0;
1232: mask = umask(0);
1233: if (!pflag)
1.18 markus 1234: (void) umask(mask);
1.1 deraadt 1235: if (argc != 1) {
1236: run_err("ambiguous target");
1237: exit(1);
1238: }
1239: targ = *argv;
1240: if (targetshouldbedirectory)
1241: verifydir(targ);
1.18 markus 1242:
1.107 deraadt 1243: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 1244: if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
1245: targisdir = 1;
1.202 djm 1246: if (src != NULL && !iamrecursive && !Tflag) {
1247: /*
1248: * Prepare to try to restrict incoming filenames to match
1249: * the requested destination file glob.
1250: */
1.204 djm 1251: if (brace_expand(src, &patterns, &npatterns) != 0)
1252: fatal("%s: could not expand pattern", __func__);
1.202 djm 1253: }
1.1 deraadt 1254: for (first = 1;; first = 0) {
1255: cp = buf;
1.122 avsm 1256: if (atomicio(read, remin, cp, 1) != 1)
1.204 djm 1257: goto done;
1.1 deraadt 1258: if (*cp++ == '\n')
1259: SCREWUP("unexpected <newline>");
1260: do {
1.30 deraadt 1261: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 1262: SCREWUP("lost connection");
1263: *cp++ = ch;
1264: } while (cp < &buf[sizeof(buf) - 1] && ch != '\n');
1265: *cp = 0;
1.114 markus 1266: if (verbose_mode)
1.186 schwarze 1267: fmprintf(stderr, "Sink: %s", buf);
1.1 deraadt 1268:
1269: if (buf[0] == '\01' || buf[0] == '\02') {
1.186 schwarze 1270: if (iamremote == 0) {
1271: (void) snmprintf(visbuf, sizeof(visbuf),
1272: NULL, "%s", buf + 1);
1.107 deraadt 1273: (void) atomicio(vwrite, STDERR_FILENO,
1.186 schwarze 1274: visbuf, strlen(visbuf));
1275: }
1.1 deraadt 1276: if (buf[0] == '\02')
1277: exit(1);
1278: ++errs;
1279: continue;
1280: }
1281: if (buf[0] == 'E') {
1.107 deraadt 1282: (void) atomicio(vwrite, remout, "", 1);
1.204 djm 1283: goto done;
1.1 deraadt 1284: }
1285: if (ch == '\n')
1286: *--cp = 0;
1287:
1288: cp = buf;
1289: if (*cp == 'T') {
1290: setimes++;
1291: cp++;
1.176 guenther 1292: if (!isdigit((unsigned char)*cp))
1293: SCREWUP("mtime.sec not present");
1294: ull = strtoull(cp, &cp, 10);
1.66 stevesk 1295: if (!cp || *cp++ != ' ')
1.1 deraadt 1296: SCREWUP("mtime.sec not delimited");
1.189 millert 1297: if (TYPE_OVERFLOW(time_t, ull))
1.176 guenther 1298: setimes = 0; /* out of range */
1299: mtime.tv_sec = ull;
1.66 stevesk 1300: mtime.tv_usec = strtol(cp, &cp, 10);
1.176 guenther 1301: if (!cp || *cp++ != ' ' || mtime.tv_usec < 0 ||
1302: mtime.tv_usec > 999999)
1.1 deraadt 1303: SCREWUP("mtime.usec not delimited");
1.176 guenther 1304: if (!isdigit((unsigned char)*cp))
1305: SCREWUP("atime.sec not present");
1306: ull = strtoull(cp, &cp, 10);
1.66 stevesk 1307: if (!cp || *cp++ != ' ')
1.1 deraadt 1308: SCREWUP("atime.sec not delimited");
1.189 millert 1309: if (TYPE_OVERFLOW(time_t, ull))
1.176 guenther 1310: setimes = 0; /* out of range */
1311: atime.tv_sec = ull;
1.66 stevesk 1312: atime.tv_usec = strtol(cp, &cp, 10);
1.176 guenther 1313: if (!cp || *cp++ != '\0' || atime.tv_usec < 0 ||
1314: atime.tv_usec > 999999)
1.1 deraadt 1315: SCREWUP("atime.usec not delimited");
1.107 deraadt 1316: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 1317: continue;
1318: }
1319: if (*cp != 'C' && *cp != 'D') {
1320: /*
1321: * Check for the case "rcp remote:foo\* local:bar".
1322: * In this case, the line "No match." can be returned
1323: * by the shell before the rcp command on the remote is
1324: * executed so the ^Aerror_message convention isn't
1325: * followed.
1326: */
1327: if (first) {
1328: run_err("%s", cp);
1329: exit(1);
1330: }
1331: SCREWUP("expected control record");
1332: }
1333: mode = 0;
1334: for (++cp; cp < buf + 5; cp++) {
1335: if (*cp < '0' || *cp > '7')
1336: SCREWUP("bad mode");
1337: mode = (mode << 3) | (*cp - '0');
1338: }
1.197 dtucker 1339: if (!pflag)
1340: mode &= ~mask;
1.1 deraadt 1341: if (*cp++ != ' ')
1342: SCREWUP("mode not delimited");
1343:
1.188 millert 1344: if (!isdigit((unsigned char)*cp))
1345: SCREWUP("size not present");
1346: ull = strtoull(cp, &cp, 10);
1347: if (!cp || *cp++ != ' ')
1.1 deraadt 1348: SCREWUP("size not delimited");
1.189 millert 1349: if (TYPE_OVERFLOW(off_t, ull))
1.188 millert 1350: SCREWUP("size out of range");
1351: size = (off_t)ull;
1352:
1.198 djm 1353: if (*cp == '\0' || strchr(cp, '/') != NULL ||
1354: strcmp(cp, ".") == 0 || strcmp(cp, "..") == 0) {
1.114 markus 1355: run_err("error: unexpected filename: %s", cp);
1356: exit(1);
1357: }
1.204 djm 1358: if (npatterns > 0) {
1359: for (n = 0; n < npatterns; n++) {
1360: if (fnmatch(patterns[n], cp, 0) == 0)
1361: break;
1362: }
1363: if (n >= npatterns)
1364: SCREWUP("filename does not match request");
1365: }
1.1 deraadt 1366: if (targisdir) {
1367: static char *namebuf;
1.124 djm 1368: static size_t cursize;
1.1 deraadt 1369: size_t need;
1370:
1371: need = strlen(targ) + strlen(cp) + 250;
1.55 deraadt 1372: if (need > cursize) {
1.173 djm 1373: free(namebuf);
1.18 markus 1374: namebuf = xmalloc(need);
1.55 deraadt 1375: cursize = need;
1376: }
1377: (void) snprintf(namebuf, need, "%s%s%s", targ,
1.88 mouring 1378: strcmp(targ, "/") ? "/" : "", cp);
1.1 deraadt 1379: np = namebuf;
1380: } else
1381: np = targ;
1.12 aaron 1382: curfile = cp;
1.1 deraadt 1383: exists = stat(np, &stb) == 0;
1384: if (buf[0] == 'D') {
1385: int mod_flag = pflag;
1.114 markus 1386: if (!iamrecursive)
1387: SCREWUP("received directory without -r");
1.1 deraadt 1388: if (exists) {
1389: if (!S_ISDIR(stb.st_mode)) {
1390: errno = ENOTDIR;
1391: goto bad;
1392: }
1393: if (pflag)
1.18 markus 1394: (void) chmod(np, mode);
1.1 deraadt 1395: } else {
1.18 markus 1396: /* Handle copying from a read-only
1397: directory */
1.1 deraadt 1398: mod_flag = 1;
1.205 deraadt 1399: if (mkdir(np, mode | S_IRWXU) == -1)
1.1 deraadt 1400: goto bad;
1401: }
1.58 danh 1402: vect[0] = xstrdup(np);
1.202 djm 1403: sink(1, vect, src);
1.1 deraadt 1404: if (setimes) {
1405: setimes = 0;
1.210 djm 1406: (void) utimes(vect[0], tv);
1.1 deraadt 1407: }
1408: if (mod_flag)
1.59 deraadt 1409: (void) chmod(vect[0], mode);
1.173 djm 1410: free(vect[0]);
1.1 deraadt 1411: continue;
1412: }
1413: omode = mode;
1.174 dtucker 1414: mode |= S_IWUSR;
1.205 deraadt 1415: if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) == -1) {
1.1 deraadt 1416: bad: run_err("%s: %s", np, strerror(errno));
1417: continue;
1418: }
1.107 deraadt 1419: (void) atomicio(vwrite, remout, "", 1);
1.161 djm 1420: if ((bp = allocbuf(&buffer, ofd, COPY_BUFLEN)) == NULL) {
1.18 markus 1421: (void) close(ofd);
1.1 deraadt 1422: continue;
1423: }
1424: cp = bp->buf;
1.209 djm 1425: wrerr = 0;
1.7 deraadt 1426:
1.209 djm 1427: /*
1428: * NB. do not use run_err() unless immediately followed by
1429: * exit() below as it may send a spurious reply that might
1430: * desyncronise us from the peer. Use note_err() instead.
1431: */
1.12 aaron 1432: statbytes = 0;
1.97 fgsch 1433: if (showprogress)
1434: start_progress_meter(curfile, size, &statbytes);
1.161 djm 1435: set_nonblock(remin);
1436: for (count = i = 0; i < size; i += bp->cnt) {
1437: amt = bp->cnt;
1.1 deraadt 1438: if (i + amt > size)
1439: amt = size - i;
1440: count += amt;
1441: do {
1.167 djm 1442: j = atomicio6(read, remin, cp, amt,
1443: scpio, &statbytes);
1.122 avsm 1444: if (j == 0) {
1.161 djm 1445: run_err("%s", j != EPIPE ?
1446: strerror(errno) :
1.63 stevesk 1447: "dropped connection");
1.1 deraadt 1448: exit(1);
1449: }
1450: amt -= j;
1451: cp += j;
1452: } while (amt > 0);
1.112 djm 1453:
1.1 deraadt 1454: if (count == bp->cnt) {
1455: /* Keep reading so we stay sync'd up. */
1.209 djm 1456: if (!wrerr) {
1.122 avsm 1457: if (atomicio(vwrite, ofd, bp->buf,
1458: count) != count) {
1.209 djm 1459: note_err("%s: %s", np,
1460: strerror(errno));
1461: wrerr = 1;
1.1 deraadt 1462: }
1463: }
1464: count = 0;
1465: cp = bp->buf;
1466: }
1467: }
1.161 djm 1468: unset_nonblock(remin);
1.209 djm 1469: if (count != 0 && !wrerr &&
1.122 avsm 1470: atomicio(vwrite, ofd, bp->buf, count) != count) {
1.209 djm 1471: note_err("%s: %s", np, strerror(errno));
1472: wrerr = 1;
1.1 deraadt 1473: }
1.209 djm 1474: if (!wrerr && (!exists || S_ISREG(stb.st_mode)) &&
1475: ftruncate(ofd, size) != 0)
1476: note_err("%s: truncate: %s", np, strerror(errno));
1.1 deraadt 1477: if (pflag) {
1478: if (exists || omode != mode)
1.116 dtucker 1479: if (fchmod(ofd, omode)) {
1.209 djm 1480: note_err("%s: set mode: %s",
1.63 stevesk 1481: np, strerror(errno));
1.116 dtucker 1482: }
1.1 deraadt 1483: } else {
1484: if (!exists && omode != mode)
1.116 dtucker 1485: if (fchmod(ofd, omode & ~mask)) {
1.209 djm 1486: note_err("%s: set mode: %s",
1.63 stevesk 1487: np, strerror(errno));
1.116 dtucker 1488: }
1.1 deraadt 1489: }
1.209 djm 1490: if (close(ofd) == -1)
1.211 ! millert 1491: note_err("%s: close: %s", np, strerror(errno));
1.18 markus 1492: (void) response();
1.185 dtucker 1493: if (showprogress)
1494: stop_progress_meter();
1.209 djm 1495: if (setimes && !wrerr) {
1.1 deraadt 1496: setimes = 0;
1.205 deraadt 1497: if (utimes(np, tv) == -1) {
1.209 djm 1498: note_err("%s: set times: %s",
1.63 stevesk 1499: np, strerror(errno));
1.1 deraadt 1500: }
1501: }
1.209 djm 1502: /* If no error was noted then signal success for this file */
1503: if (note_err(NULL) == 0)
1.107 deraadt 1504: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 1505: }
1.204 djm 1506: done:
1507: for (n = 0; n < npatterns; n++)
1508: free(patterns[n]);
1509: free(patterns);
1510: return;
1.1 deraadt 1511: screwup:
1.204 djm 1512: for (n = 0; n < npatterns; n++)
1513: free(patterns[n]);
1514: free(patterns);
1.1 deraadt 1515: run_err("protocol error: %s", why);
1516: exit(1);
1517: }
1518:
1519: int
1.86 itojun 1520: response(void)
1.1 deraadt 1521: {
1.186 schwarze 1522: char ch, *cp, resp, rbuf[2048], visbuf[2048];
1.1 deraadt 1523:
1.30 deraadt 1524: if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp))
1.1 deraadt 1525: lostconn(0);
1526:
1527: cp = rbuf;
1.18 markus 1528: switch (resp) {
1529: case 0: /* ok */
1.1 deraadt 1530: return (0);
1531: default:
1532: *cp++ = resp;
1533: /* FALLTHROUGH */
1.18 markus 1534: case 1: /* error, followed by error msg */
1535: case 2: /* fatal error, "" */
1.1 deraadt 1536: do {
1.30 deraadt 1537: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 1538: lostconn(0);
1539: *cp++ = ch;
1540: } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n');
1541:
1.186 schwarze 1542: if (!iamremote) {
1543: cp[-1] = '\0';
1544: (void) snmprintf(visbuf, sizeof(visbuf),
1545: NULL, "%s\n", rbuf);
1546: (void) atomicio(vwrite, STDERR_FILENO,
1547: visbuf, strlen(visbuf));
1548: }
1.1 deraadt 1549: ++errs;
1550: if (resp == 1)
1551: return (-1);
1552: exit(1);
1553: }
1554: /* NOTREACHED */
1555: }
1556:
1557: void
1.86 itojun 1558: usage(void)
1.1 deraadt 1559: {
1.83 stevesk 1560: (void) fprintf(stderr,
1.203 jmc 1561: "usage: scp [-346BCpqrTv] [-c cipher] [-F ssh_config] [-i identity_file]\n"
1.199 tb 1562: " [-J destination] [-l limit] [-o ssh_option] [-P port]\n"
1563: " [-S program] source ... target\n");
1.1 deraadt 1564: exit(1);
1565: }
1566:
1567: void
1.18 markus 1568: run_err(const char *fmt,...)
1.1 deraadt 1569: {
1570: static FILE *fp;
1571: va_list ap;
1572:
1573: ++errs;
1.136 biorn 1574: if (fp != NULL || (remout != -1 && (fp = fdopen(remout, "w")))) {
1575: (void) fprintf(fp, "%c", 0x01);
1576: (void) fprintf(fp, "scp: ");
1577: va_start(ap, fmt);
1578: (void) vfprintf(fp, fmt, ap);
1579: va_end(ap);
1580: (void) fprintf(fp, "\n");
1581: (void) fflush(fp);
1582: }
1.18 markus 1583:
1584: if (!iamremote) {
1.73 markus 1585: va_start(ap, fmt);
1.186 schwarze 1586: vfmprintf(stderr, fmt, ap);
1.73 markus 1587: va_end(ap);
1.18 markus 1588: fprintf(stderr, "\n");
1589: }
1.209 djm 1590: }
1591:
1592: /*
1593: * Notes a sink error for sending at the end of a file transfer. Returns 0 if
1594: * no error has been noted or -1 otherwise. Use note_err(NULL) to flush
1595: * any active error at the end of the transfer.
1596: */
1597: int
1598: note_err(const char *fmt, ...)
1599: {
1600: static char *emsg;
1601: va_list ap;
1602:
1603: /* Replay any previously-noted error */
1604: if (fmt == NULL) {
1605: if (emsg == NULL)
1606: return 0;
1607: run_err("%s", emsg);
1608: free(emsg);
1609: emsg = NULL;
1610: return -1;
1611: }
1612:
1613: errs++;
1614: /* Prefer first-noted error */
1615: if (emsg != NULL)
1616: return -1;
1617:
1618: va_start(ap, fmt);
1619: vasnmprintf(&emsg, INT_MAX, NULL, fmt, ap);
1620: va_end(ap);
1621: return -1;
1.1 deraadt 1622: }
1623:
1624: void
1.104 djm 1625: verifydir(char *cp)
1.1 deraadt 1626: {
1627: struct stat stb;
1628:
1629: if (!stat(cp, &stb)) {
1630: if (S_ISDIR(stb.st_mode))
1631: return;
1632: errno = ENOTDIR;
1633: }
1634: run_err("%s: %s", cp, strerror(errno));
1.123 avsm 1635: killchild(0);
1.1 deraadt 1636: }
1637:
1638: int
1.104 djm 1639: okname(char *cp0)
1.1 deraadt 1640: {
1641: int c;
1642: char *cp;
1643:
1644: cp = cp0;
1645: do {
1.75 deraadt 1646: c = (int)*cp;
1.1 deraadt 1647: if (c & 0200)
1648: goto bad;
1.179 deraadt 1649: if (!isalpha(c) && !isdigit((unsigned char)c)) {
1.101 markus 1650: switch (c) {
1651: case '\'':
1652: case '"':
1653: case '`':
1654: case ' ':
1655: case '#':
1656: goto bad;
1657: default:
1658: break;
1659: }
1660: }
1.1 deraadt 1661: } while (*++cp);
1662: return (1);
1663:
1.186 schwarze 1664: bad: fmprintf(stderr, "%s: invalid user name\n", cp0);
1.1 deraadt 1665: return (0);
1666: }
1667:
1668: BUF *
1.104 djm 1669: allocbuf(BUF *bp, int fd, int blksize)
1.1 deraadt 1670: {
1671: size_t size;
1672: struct stat stb;
1673:
1.205 deraadt 1674: if (fstat(fd, &stb) == -1) {
1.1 deraadt 1675: run_err("fstat: %s", strerror(errno));
1676: return (0);
1677: }
1.187 deraadt 1678: size = ROUNDUP(stb.st_blksize, blksize);
1.95 markus 1679: if (size == 0)
1.18 markus 1680: size = blksize;
1.1 deraadt 1681: if (bp->cnt >= size)
1682: return (bp);
1.192 deraadt 1683: bp->buf = xrecallocarray(bp->buf, bp->cnt, size, 1);
1.1 deraadt 1684: bp->cnt = size;
1685: return (bp);
1686: }
1687:
1688: void
1.104 djm 1689: lostconn(int signo)
1.1 deraadt 1690: {
1691: if (!iamremote)
1.172 dtucker 1692: (void)write(STDERR_FILENO, "lost connection\n", 16);
1.74 markus 1693: if (signo)
1694: _exit(1);
1695: else
1696: exit(1);
1.4 aaron 1697: }
![[BACK]](/icons/back.gif){kind=icon}
Return to scp.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / ssh