Annotation of src/usr.bin/ssh/scp.c, Revision 1.212
1.212 ! djm 1: /* $OpenBSD: scp.c,v 1.211 2020/05/29 21:22:02 millert 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, "-oPermitLocalCommand=no");
405: addargs(&args, "-oClearAllForwardings=yes");
1.195 djm 406: addargs(&args, "-oRemoteCommand=none");
407: addargs(&args, "-oRequestTTY=no");
1.41 markus 408:
1.202 djm 409: fflag = Tflag = tflag = 0;
410: while ((ch = getopt(argc, argv,
1.212 ! djm 411: "12346ABCTdfpqrtvF:J:P:S:c:i:l:o:")) != -1) {
1.18 markus 412: switch (ch) {
413: /* User-visible flags. */
1.100 markus 414: case '1':
1.190 djm 415: fatal("SSH protocol v.1 is no longer supported");
416: break;
1.100 markus 417: case '2':
1.190 djm 418: /* Ignored */
419: break;
1.212 ! djm 420: case 'A':
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:
1.212 ! djm 499: /* Do this last because we want the user to be able to override it */
! 500: addargs(&args, "-oForwardAgent=no");
! 501:
1.1 deraadt 502: if ((pwd = getpwuid(userid = getuid())) == NULL)
1.108 deraadt 503: fatal("unknown user %u", (u_int) userid);
1.1 deraadt 504:
1.156 djm 505: if (!isatty(STDOUT_FILENO))
1.7 deraadt 506: showprogress = 0;
1.184 deraadt 507:
508: if (pflag) {
509: /* Cannot pledge: -p allows setuid/setgid files... */
510: } else {
511: if (pledge("stdio rpath wpath cpath fattr tty proc exec",
512: NULL) == -1) {
513: perror("pledge");
514: exit(1);
515: }
516: }
1.7 deraadt 517:
1.1 deraadt 518: remin = STDIN_FILENO;
519: remout = STDOUT_FILENO;
520:
1.52 stevesk 521: if (fflag) {
1.18 markus 522: /* Follow "protocol", send data. */
523: (void) response();
1.1 deraadt 524: source(argc, argv);
525: exit(errs != 0);
526: }
1.18 markus 527: if (tflag) {
528: /* Receive data. */
1.202 djm 529: sink(argc, argv, NULL);
1.1 deraadt 530: exit(errs != 0);
531: }
532: if (argc < 2)
533: usage();
534: if (argc > 2)
535: targetshouldbedirectory = 1;
536:
537: remin = remout = -1;
1.92 markus 538: do_cmd_pid = -1;
1.1 deraadt 539: /* Command to be executed on remote system using "ssh". */
1.55 deraadt 540: (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s",
541: verbose_mode ? " -v" : "",
1.35 deraadt 542: iamrecursive ? " -r" : "", pflag ? " -p" : "",
543: targetshouldbedirectory ? " -d" : "");
1.1 deraadt 544:
1.207 dtucker 545: (void) ssh_signal(SIGPIPE, lostconn);
1.1 deraadt 546:
1.193 millert 547: if (colon(argv[argc - 1])) /* Dest is remote host. */
548: toremote(argc, argv);
1.1 deraadt 549: else {
550: if (targetshouldbedirectory)
551: verifydir(argv[argc - 1]);
1.130 djm 552: tolocal(argc, argv); /* Dest is local host. */
1.92 markus 553: }
554: /*
555: * Finally check the exit status of the ssh process, if one was forked
1.164 stevesk 556: * and no error has occurred yet
1.92 markus 557: */
558: if (do_cmd_pid != -1 && errs == 0) {
559: if (remin != -1)
560: (void) close(remin);
561: if (remout != -1)
562: (void) close(remout);
563: if (waitpid(do_cmd_pid, &status, 0) == -1)
564: errs = 1;
565: else {
566: if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
567: errs = 1;
568: }
1.1 deraadt 569: }
570: exit(errs != 0);
571: }
572:
1.167 djm 573: /* Callback from atomicio6 to update progress meter and limit bandwidth */
574: static int
575: scpio(void *_cnt, size_t s)
1.161 djm 576: {
1.167 djm 577: off_t *cnt = (off_t *)_cnt;
578:
579: *cnt += s;
1.201 dtucker 580: refresh_progress_meter(0);
1.167 djm 581: if (limit_kbps > 0)
582: bandwidth_limit(&bwlimit, s);
583: return 0;
1.161 djm 584: }
585:
1.176 guenther 586: static int
587: do_times(int fd, int verb, const struct stat *sb)
588: {
589: /* strlen(2^64) == 20; strlen(10^6) == 7 */
590: char buf[(20 + 7 + 2) * 2 + 2];
591:
592: (void)snprintf(buf, sizeof(buf), "T%llu 0 %llu 0\n",
593: (unsigned long long) (sb->st_mtime < 0 ? 0 : sb->st_mtime),
594: (unsigned long long) (sb->st_atime < 0 ? 0 : sb->st_atime));
595: if (verb) {
596: fprintf(stderr, "File mtime %lld atime %lld\n",
597: (long long)sb->st_mtime, (long long)sb->st_atime);
598: fprintf(stderr, "Sending file timestamps: %s", buf);
599: }
600: (void) atomicio(vwrite, fd, buf, strlen(buf));
601: return (response());
602: }
603:
1.194 millert 604: static int
605: parse_scp_uri(const char *uri, char **userp, char **hostp, int *portp,
606: char **pathp)
607: {
608: int r;
609:
610: r = parse_uri("scp", uri, userp, hostp, portp, pathp);
611: if (r == 0 && *pathp == NULL)
612: *pathp = xstrdup(".");
613: return r;
614: }
615:
1.204 djm 616: /* Appends a string to an array; returns 0 on success, -1 on alloc failure */
617: static int
618: append(char *cp, char ***ap, size_t *np)
619: {
620: char **tmp;
621:
622: if ((tmp = reallocarray(*ap, *np + 1, sizeof(*tmp))) == NULL)
623: return -1;
624: tmp[(*np)] = cp;
625: (*np)++;
626: *ap = tmp;
627: return 0;
628: }
629:
630: /*
631: * Finds the start and end of the first brace pair in the pattern.
632: * returns 0 on success or -1 for invalid patterns.
633: */
634: static int
635: find_brace(const char *pattern, int *startp, int *endp)
636: {
637: int i;
638: int in_bracket, brace_level;
639:
640: *startp = *endp = -1;
641: in_bracket = brace_level = 0;
642: for (i = 0; i < INT_MAX && *endp < 0 && pattern[i] != '\0'; i++) {
643: switch (pattern[i]) {
644: case '\\':
645: /* skip next character */
646: if (pattern[i + 1] != '\0')
647: i++;
648: break;
649: case '[':
650: in_bracket = 1;
651: break;
652: case ']':
653: in_bracket = 0;
654: break;
655: case '{':
656: if (in_bracket)
657: break;
658: if (pattern[i + 1] == '}') {
659: /* Protect a single {}, for find(1), like csh */
660: i++; /* skip */
661: break;
662: }
663: if (*startp == -1)
664: *startp = i;
665: brace_level++;
666: break;
667: case '}':
668: if (in_bracket)
669: break;
670: if (*startp < 0) {
671: /* Unbalanced brace */
672: return -1;
673: }
674: if (--brace_level <= 0)
675: *endp = i;
676: break;
677: }
678: }
679: /* unbalanced brackets/braces */
680: if (*endp < 0 && (*startp >= 0 || in_bracket))
681: return -1;
682: return 0;
683: }
684:
685: /*
686: * Assembles and records a successfully-expanded pattern, returns -1 on
687: * alloc failure.
688: */
689: static int
690: emit_expansion(const char *pattern, int brace_start, int brace_end,
691: int sel_start, int sel_end, char ***patternsp, size_t *npatternsp)
692: {
693: char *cp;
694: int o = 0, tail_len = strlen(pattern + brace_end + 1);
695:
696: if ((cp = malloc(brace_start + (sel_end - sel_start) +
697: tail_len + 1)) == NULL)
698: return -1;
699:
700: /* Pattern before initial brace */
701: if (brace_start > 0) {
702: memcpy(cp, pattern, brace_start);
703: o = brace_start;
704: }
705: /* Current braced selection */
706: if (sel_end - sel_start > 0) {
707: memcpy(cp + o, pattern + sel_start,
708: sel_end - sel_start);
709: o += sel_end - sel_start;
710: }
711: /* Remainder of pattern after closing brace */
712: if (tail_len > 0) {
713: memcpy(cp + o, pattern + brace_end + 1, tail_len);
714: o += tail_len;
715: }
716: cp[o] = '\0';
717: if (append(cp, patternsp, npatternsp) != 0) {
718: free(cp);
719: return -1;
720: }
721: return 0;
722: }
723:
724: /*
725: * Expand the first encountered brace in pattern, appending the expanded
726: * patterns it yielded to the *patternsp array.
727: *
728: * Returns 0 on success or -1 on allocation failure.
729: *
730: * Signals whether expansion was performed via *expanded and whether
731: * pattern was invalid via *invalid.
732: */
733: static int
734: brace_expand_one(const char *pattern, char ***patternsp, size_t *npatternsp,
735: int *expanded, int *invalid)
736: {
737: int i;
738: int in_bracket, brace_start, brace_end, brace_level;
739: int sel_start, sel_end;
740:
741: *invalid = *expanded = 0;
742:
743: if (find_brace(pattern, &brace_start, &brace_end) != 0) {
744: *invalid = 1;
745: return 0;
746: } else if (brace_start == -1)
747: return 0;
748:
749: in_bracket = brace_level = 0;
750: for (i = sel_start = brace_start + 1; i < brace_end; i++) {
751: switch (pattern[i]) {
752: case '{':
753: if (in_bracket)
754: break;
755: brace_level++;
756: break;
757: case '}':
758: if (in_bracket)
759: break;
760: brace_level--;
761: break;
762: case '[':
763: in_bracket = 1;
764: break;
765: case ']':
766: in_bracket = 0;
767: break;
768: case '\\':
769: if (i < brace_end - 1)
770: i++; /* skip */
771: break;
772: }
773: if (pattern[i] == ',' || i == brace_end - 1) {
774: if (in_bracket || brace_level > 0)
775: continue;
776: /* End of a selection, emit an expanded pattern */
777:
778: /* Adjust end index for last selection */
779: sel_end = (i == brace_end - 1) ? brace_end : i;
780: if (emit_expansion(pattern, brace_start, brace_end,
781: sel_start, sel_end, patternsp, npatternsp) != 0)
782: return -1;
783: /* move on to the next selection */
784: sel_start = i + 1;
785: continue;
786: }
787: }
788: if (in_bracket || brace_level > 0) {
789: *invalid = 1;
790: return 0;
791: }
792: /* success */
793: *expanded = 1;
794: return 0;
795: }
796:
797: /* Expand braces from pattern. Returns 0 on success, -1 on failure */
798: static int
799: brace_expand(const char *pattern, char ***patternsp, size_t *npatternsp)
800: {
801: char *cp, *cp2, **active = NULL, **done = NULL;
802: size_t i, nactive = 0, ndone = 0;
803: int ret = -1, invalid = 0, expanded = 0;
804:
805: *patternsp = NULL;
806: *npatternsp = 0;
807:
808: /* Start the worklist with the original pattern */
809: if ((cp = strdup(pattern)) == NULL)
810: return -1;
811: if (append(cp, &active, &nactive) != 0) {
812: free(cp);
813: return -1;
814: }
815: while (nactive > 0) {
816: cp = active[nactive - 1];
817: nactive--;
818: if (brace_expand_one(cp, &active, &nactive,
819: &expanded, &invalid) == -1) {
820: free(cp);
821: goto fail;
822: }
823: if (invalid)
824: fatal("%s: invalid brace pattern \"%s\"", __func__, cp);
825: if (expanded) {
826: /*
827: * Current entry expanded to new entries on the
828: * active list; discard the progenitor pattern.
829: */
830: free(cp);
831: continue;
832: }
833: /*
834: * Pattern did not expand; append the finename component to
835: * the completed list
836: */
837: if ((cp2 = strrchr(cp, '/')) != NULL)
838: *cp2++ = '\0';
839: else
840: cp2 = cp;
841: if (append(xstrdup(cp2), &done, &ndone) != 0) {
842: free(cp);
843: goto fail;
844: }
845: free(cp);
846: }
847: /* success */
848: *patternsp = done;
849: *npatternsp = ndone;
850: done = NULL;
851: ndone = 0;
852: ret = 0;
853: fail:
854: for (i = 0; i < nactive; i++)
855: free(active[i]);
856: free(active);
857: for (i = 0; i < ndone; i++)
858: free(done[i]);
859: free(done);
860: return ret;
861: }
862:
1.1 deraadt 863: void
1.193 millert 864: toremote(int argc, char **argv)
1.1 deraadt 865: {
1.193 millert 866: char *suser = NULL, *host = NULL, *src = NULL;
867: char *bp, *tuser, *thost, *targ;
868: int sport = -1, tport = -1;
1.129 djm 869: arglist alist;
1.193 millert 870: int i, r;
1.168 djm 871: u_int j;
1.129 djm 872:
873: memset(&alist, '\0', sizeof(alist));
874: alist.list = NULL;
1.1 deraadt 875:
1.193 millert 876: /* Parse target */
1.194 millert 877: r = parse_scp_uri(argv[argc - 1], &tuser, &thost, &tport, &targ);
878: if (r == -1) {
879: fmprintf(stderr, "%s: invalid uri\n", argv[argc - 1]);
880: ++errs;
881: goto out;
882: }
1.193 millert 883: if (r != 0) {
884: if (parse_user_host_path(argv[argc - 1], &tuser, &thost,
1.194 millert 885: &targ) == -1) {
886: fmprintf(stderr, "%s: invalid target\n", argv[argc - 1]);
887: ++errs;
1.193 millert 888: goto out;
1.194 millert 889: }
1.129 djm 890: }
1.194 millert 891: if (tuser != NULL && !okname(tuser)) {
892: ++errs;
1.193 millert 893: goto out;
1.194 millert 894: }
1.129 djm 895:
1.193 millert 896: /* Parse source files */
1.1 deraadt 897: for (i = 0; i < argc - 1; i++) {
1.193 millert 898: free(suser);
899: free(host);
900: free(src);
1.194 millert 901: r = parse_scp_uri(argv[i], &suser, &host, &sport, &src);
902: if (r == -1) {
903: fmprintf(stderr, "%s: invalid uri\n", argv[i]);
904: ++errs;
905: continue;
906: }
907: if (r != 0) {
1.193 millert 908: parse_user_host_path(argv[i], &suser, &host, &src);
1.194 millert 909: }
1.193 millert 910: if (suser != NULL && !okname(suser)) {
911: ++errs;
912: continue;
913: }
914: if (host && throughlocal) { /* extended remote to remote */
1.171 djm 915: xasprintf(&bp, "%s -f %s%s", cmd,
916: *src == '-' ? "-- " : "", src);
1.193 millert 917: if (do_cmd(host, suser, sport, bp, &remin, &remout) < 0)
1.169 markus 918: exit(1);
1.173 djm 919: free(bp);
1.171 djm 920: xasprintf(&bp, "%s -t %s%s", cmd,
921: *targ == '-' ? "-- " : "", targ);
1.193 millert 922: if (do_cmd2(thost, tuser, tport, bp, remin, remout) < 0)
1.169 markus 923: exit(1);
1.173 djm 924: free(bp);
1.169 markus 925: (void) close(remin);
926: (void) close(remout);
927: remin = remout = -1;
1.193 millert 928: } else if (host) { /* standard remote to remote */
929: if (tport != -1 && tport != SSH_DEFAULT_PORT) {
930: /* This would require the remote support URIs */
931: fatal("target port not supported with two "
932: "remote hosts without the -3 option");
933: }
934:
1.129 djm 935: freeargs(&alist);
936: addargs(&alist, "%s", ssh_program);
937: addargs(&alist, "-x");
1.168 djm 938: addargs(&alist, "-oClearAllForwardings=yes");
1.129 djm 939: addargs(&alist, "-n");
1.168 djm 940: for (j = 0; j < remote_remote_args.num; j++) {
941: addargs(&alist, "%s",
942: remote_remote_args.list[j]);
943: }
1.193 millert 944:
945: if (sport != -1) {
946: addargs(&alist, "-p");
947: addargs(&alist, "%d", sport);
948: }
949: if (suser) {
1.129 djm 950: addargs(&alist, "-l");
951: addargs(&alist, "%s", suser);
1.23 markus 952: }
1.165 guenther 953: addargs(&alist, "--");
1.129 djm 954: addargs(&alist, "%s", host);
955: addargs(&alist, "%s", cmd);
956: addargs(&alist, "%s", src);
957: addargs(&alist, "%s%s%s:%s",
958: tuser ? tuser : "", tuser ? "@" : "",
959: thost, targ);
960: if (do_local_cmd(&alist) != 0)
1.109 markus 961: errs = 1;
1.18 markus 962: } else { /* local to remote */
1.1 deraadt 963: if (remin == -1) {
1.171 djm 964: xasprintf(&bp, "%s -t %s%s", cmd,
965: *targ == '-' ? "-- " : "", targ);
1.193 millert 966: if (do_cmd(thost, tuser, tport, bp, &remin,
1.140 deraadt 967: &remout) < 0)
1.18 markus 968: exit(1);
1.1 deraadt 969: if (response() < 0)
970: exit(1);
1.173 djm 971: free(bp);
1.1 deraadt 972: }
1.18 markus 973: source(1, argv + i);
1.1 deraadt 974: }
975: }
1.193 millert 976: out:
977: free(tuser);
978: free(thost);
979: free(targ);
980: free(suser);
981: free(host);
982: free(src);
1.1 deraadt 983: }
984:
985: void
1.104 djm 986: tolocal(int argc, char **argv)
1.1 deraadt 987: {
1.193 millert 988: char *bp, *host = NULL, *src = NULL, *suser = NULL;
1.129 djm 989: arglist alist;
1.193 millert 990: int i, r, sport = -1;
1.129 djm 991:
992: memset(&alist, '\0', sizeof(alist));
993: alist.list = NULL;
1.1 deraadt 994:
995: for (i = 0; i < argc - 1; i++) {
1.193 millert 996: free(suser);
997: free(host);
998: free(src);
1.194 millert 999: r = parse_scp_uri(argv[i], &suser, &host, &sport, &src);
1.193 millert 1000: if (r == -1) {
1.194 millert 1001: fmprintf(stderr, "%s: invalid uri\n", argv[i]);
1.193 millert 1002: ++errs;
1003: continue;
1004: }
1005: if (r != 0)
1006: parse_user_host_path(argv[i], &suser, &host, &src);
1007: if (suser != NULL && !okname(suser)) {
1008: ++errs;
1009: continue;
1010: }
1011: if (!host) { /* Local to local. */
1.129 djm 1012: freeargs(&alist);
1013: addargs(&alist, "%s", _PATH_CP);
1014: if (iamrecursive)
1015: addargs(&alist, "-r");
1016: if (pflag)
1017: addargs(&alist, "-p");
1.165 guenther 1018: addargs(&alist, "--");
1.129 djm 1019: addargs(&alist, "%s", argv[i]);
1020: addargs(&alist, "%s", argv[argc-1]);
1021: if (do_local_cmd(&alist))
1.1 deraadt 1022: ++errs;
1023: continue;
1024: }
1.193 millert 1025: /* Remote to local. */
1.171 djm 1026: xasprintf(&bp, "%s -f %s%s",
1027: cmd, *src == '-' ? "-- " : "", src);
1.193 millert 1028: if (do_cmd(host, suser, sport, bp, &remin, &remout) < 0) {
1.173 djm 1029: free(bp);
1.18 markus 1030: ++errs;
1031: continue;
1.1 deraadt 1032: }
1.173 djm 1033: free(bp);
1.202 djm 1034: sink(1, argv + argc - 1, src);
1.18 markus 1035: (void) close(remin);
1.1 deraadt 1036: remin = remout = -1;
1037: }
1.193 millert 1038: free(suser);
1039: free(host);
1040: free(src);
1.1 deraadt 1041: }
1042:
1043: void
1.104 djm 1044: source(int argc, char **argv)
1.1 deraadt 1045: {
1046: struct stat stb;
1047: static BUF buffer;
1048: BUF *bp;
1.163 dtucker 1049: off_t i, statbytes;
1.180 djm 1050: size_t amt, nr;
1.125 dtucker 1051: int fd = -1, haderr, indx;
1.206 dtucker 1052: char *last, *name, buf[PATH_MAX + 128], encname[PATH_MAX];
1.65 deraadt 1053: int len;
1.1 deraadt 1054:
1055: for (indx = 0; indx < argc; ++indx) {
1.18 markus 1056: name = argv[indx];
1.11 aaron 1057: statbytes = 0;
1.65 deraadt 1058: len = strlen(name);
1059: while (len > 1 && name[len-1] == '/')
1060: name[--len] = '\0';
1.205 deraadt 1061: if ((fd = open(name, O_RDONLY|O_NONBLOCK, 0)) == -1)
1.158 dtucker 1062: goto syserr;
1.85 markus 1063: if (strchr(name, '\n') != NULL) {
1.158 dtucker 1064: strnvis(encname, name, sizeof(encname), VIS_NL);
1065: name = encname;
1.85 markus 1066: }
1.205 deraadt 1067: if (fstat(fd, &stb) == -1) {
1.1 deraadt 1068: syserr: run_err("%s: %s", name, strerror(errno));
1069: goto next;
1070: }
1.163 dtucker 1071: if (stb.st_size < 0) {
1072: run_err("%s: %s", name, "Negative file size");
1073: goto next;
1074: }
1.157 djm 1075: unset_nonblock(fd);
1.1 deraadt 1076: switch (stb.st_mode & S_IFMT) {
1077: case S_IFREG:
1078: break;
1079: case S_IFDIR:
1080: if (iamrecursive) {
1081: rsource(name, &stb);
1082: goto next;
1083: }
1084: /* FALLTHROUGH */
1085: default:
1086: run_err("%s: not a regular file", name);
1087: goto next;
1088: }
1089: if ((last = strrchr(name, '/')) == NULL)
1090: last = name;
1091: else
1092: ++last;
1.11 aaron 1093: curfile = last;
1.1 deraadt 1094: if (pflag) {
1.176 guenther 1095: if (do_times(remout, verbose_mode, &stb) < 0)
1.1 deraadt 1096: goto next;
1097: }
1098: #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
1.61 markus 1099: snprintf(buf, sizeof buf, "C%04o %lld %s\n",
1.47 markus 1100: (u_int) (stb.st_mode & FILEMODEMASK),
1.62 markus 1101: (long long)stb.st_size, last);
1.186 schwarze 1102: if (verbose_mode)
1103: fmprintf(stderr, "Sending file modes: %s", buf);
1.107 deraadt 1104: (void) atomicio(vwrite, remout, buf, strlen(buf));
1.1 deraadt 1105: if (response() < 0)
1106: goto next;
1.161 djm 1107: if ((bp = allocbuf(&buffer, fd, COPY_BUFLEN)) == NULL) {
1.127 deraadt 1108: next: if (fd != -1) {
1109: (void) close(fd);
1110: fd = -1;
1111: }
1.1 deraadt 1112: continue;
1113: }
1.97 fgsch 1114: if (showprogress)
1115: start_progress_meter(curfile, stb.st_size, &statbytes);
1.161 djm 1116: set_nonblock(remout);
1.1 deraadt 1117: for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
1118: amt = bp->cnt;
1.163 dtucker 1119: if (i + (off_t)amt > stb.st_size)
1.1 deraadt 1120: amt = stb.st_size - i;
1121: if (!haderr) {
1.180 djm 1122: if ((nr = atomicio(read, fd,
1123: bp->buf, amt)) != amt) {
1.122 avsm 1124: haderr = errno;
1.180 djm 1125: memset(bp->buf + nr, 0, amt - nr);
1126: }
1.1 deraadt 1127: }
1.161 djm 1128: /* Keep writing after error to retain sync */
1129: if (haderr) {
1130: (void)atomicio(vwrite, remout, bp->buf, amt);
1.180 djm 1131: memset(bp->buf, 0, amt);
1.161 djm 1132: continue;
1.1 deraadt 1133: }
1.167 djm 1134: if (atomicio6(vwrite, remout, bp->buf, amt, scpio,
1.161 djm 1135: &statbytes) != amt)
1136: haderr = errno;
1.1 deraadt 1137: }
1.161 djm 1138: unset_nonblock(remout);
1.4 aaron 1139:
1.127 deraadt 1140: if (fd != -1) {
1.205 deraadt 1141: if (close(fd) == -1 && !haderr)
1.127 deraadt 1142: haderr = errno;
1143: fd = -1;
1144: }
1.1 deraadt 1145: if (!haderr)
1.107 deraadt 1146: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 1147: else
1148: run_err("%s: %s", name, strerror(haderr));
1.18 markus 1149: (void) response();
1.185 dtucker 1150: if (showprogress)
1151: stop_progress_meter();
1.1 deraadt 1152: }
1153: }
1154:
1155: void
1.104 djm 1156: rsource(char *name, struct stat *statp)
1.1 deraadt 1157: {
1158: DIR *dirp;
1159: struct dirent *dp;
1.181 deraadt 1160: char *last, *vect[1], path[PATH_MAX];
1.1 deraadt 1161:
1162: if (!(dirp = opendir(name))) {
1163: run_err("%s: %s", name, strerror(errno));
1164: return;
1165: }
1166: last = strrchr(name, '/');
1.183 mmcc 1167: if (last == NULL)
1.1 deraadt 1168: last = name;
1169: else
1170: last++;
1171: if (pflag) {
1.176 guenther 1172: if (do_times(remout, verbose_mode, statp) < 0) {
1.1 deraadt 1173: closedir(dirp);
1174: return;
1175: }
1176: }
1.55 deraadt 1177: (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n",
1.47 markus 1178: (u_int) (statp->st_mode & FILEMODEMASK), 0, last);
1.18 markus 1179: if (verbose_mode)
1.186 schwarze 1180: fmprintf(stderr, "Entering directory: %s", path);
1.107 deraadt 1181: (void) atomicio(vwrite, remout, path, strlen(path));
1.1 deraadt 1182: if (response() < 0) {
1183: closedir(dirp);
1184: return;
1185: }
1.63 stevesk 1186: while ((dp = readdir(dirp)) != NULL) {
1.1 deraadt 1187: if (dp->d_ino == 0)
1188: continue;
1189: if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
1190: continue;
1191: if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) {
1192: run_err("%s/%s: name too long", name, dp->d_name);
1193: continue;
1194: }
1.55 deraadt 1195: (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name);
1.1 deraadt 1196: vect[0] = path;
1197: source(1, vect);
1198: }
1.18 markus 1199: (void) closedir(dirp);
1.107 deraadt 1200: (void) atomicio(vwrite, remout, "E\n", 2);
1.18 markus 1201: (void) response();
1.1 deraadt 1202: }
1203:
1.189 millert 1204: #define TYPE_OVERFLOW(type, val) \
1205: ((sizeof(type) == 4 && (val) > INT32_MAX) || \
1206: (sizeof(type) == 8 && (val) > INT64_MAX) || \
1207: (sizeof(type) != 4 && sizeof(type) != 8))
1208:
1.1 deraadt 1209: void
1.202 djm 1210: sink(int argc, char **argv, const char *src)
1.1 deraadt 1211: {
1212: static BUF buffer;
1213: struct stat stb;
1214: BUF *bp;
1.122 avsm 1215: off_t i;
1.124 djm 1216: size_t j, count;
1.140 deraadt 1217: int amt, exists, first, ofd;
1218: mode_t mode, omode, mask;
1.97 fgsch 1219: off_t size, statbytes;
1.176 guenther 1220: unsigned long long ull;
1.209 djm 1221: int setimes, targisdir, wrerr;
1.186 schwarze 1222: char ch, *cp, *np, *targ, *why, *vect[1], buf[2048], visbuf[2048];
1.204 djm 1223: char **patterns = NULL;
1224: size_t n, npatterns = 0;
1.40 markus 1225: struct timeval tv[2];
1.1 deraadt 1226:
1.66 stevesk 1227: #define atime tv[0]
1228: #define mtime tv[1]
1.118 deraadt 1229: #define SCREWUP(str) { why = str; goto screwup; }
1.1 deraadt 1230:
1.189 millert 1231: if (TYPE_OVERFLOW(time_t, 0) || TYPE_OVERFLOW(off_t, 0))
1232: SCREWUP("Unexpected off_t/time_t size");
1233:
1.1 deraadt 1234: setimes = targisdir = 0;
1235: mask = umask(0);
1236: if (!pflag)
1.18 markus 1237: (void) umask(mask);
1.1 deraadt 1238: if (argc != 1) {
1239: run_err("ambiguous target");
1240: exit(1);
1241: }
1242: targ = *argv;
1243: if (targetshouldbedirectory)
1244: verifydir(targ);
1.18 markus 1245:
1.107 deraadt 1246: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 1247: if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
1248: targisdir = 1;
1.202 djm 1249: if (src != NULL && !iamrecursive && !Tflag) {
1250: /*
1251: * Prepare to try to restrict incoming filenames to match
1252: * the requested destination file glob.
1253: */
1.204 djm 1254: if (brace_expand(src, &patterns, &npatterns) != 0)
1255: fatal("%s: could not expand pattern", __func__);
1.202 djm 1256: }
1.1 deraadt 1257: for (first = 1;; first = 0) {
1258: cp = buf;
1.122 avsm 1259: if (atomicio(read, remin, cp, 1) != 1)
1.204 djm 1260: goto done;
1.1 deraadt 1261: if (*cp++ == '\n')
1262: SCREWUP("unexpected <newline>");
1263: do {
1.30 deraadt 1264: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 1265: SCREWUP("lost connection");
1266: *cp++ = ch;
1267: } while (cp < &buf[sizeof(buf) - 1] && ch != '\n');
1268: *cp = 0;
1.114 markus 1269: if (verbose_mode)
1.186 schwarze 1270: fmprintf(stderr, "Sink: %s", buf);
1.1 deraadt 1271:
1272: if (buf[0] == '\01' || buf[0] == '\02') {
1.186 schwarze 1273: if (iamremote == 0) {
1274: (void) snmprintf(visbuf, sizeof(visbuf),
1275: NULL, "%s", buf + 1);
1.107 deraadt 1276: (void) atomicio(vwrite, STDERR_FILENO,
1.186 schwarze 1277: visbuf, strlen(visbuf));
1278: }
1.1 deraadt 1279: if (buf[0] == '\02')
1280: exit(1);
1281: ++errs;
1282: continue;
1283: }
1284: if (buf[0] == 'E') {
1.107 deraadt 1285: (void) atomicio(vwrite, remout, "", 1);
1.204 djm 1286: goto done;
1.1 deraadt 1287: }
1288: if (ch == '\n')
1289: *--cp = 0;
1290:
1291: cp = buf;
1292: if (*cp == 'T') {
1293: setimes++;
1294: cp++;
1.176 guenther 1295: if (!isdigit((unsigned char)*cp))
1296: SCREWUP("mtime.sec not present");
1297: ull = strtoull(cp, &cp, 10);
1.66 stevesk 1298: if (!cp || *cp++ != ' ')
1.1 deraadt 1299: SCREWUP("mtime.sec not delimited");
1.189 millert 1300: if (TYPE_OVERFLOW(time_t, ull))
1.176 guenther 1301: setimes = 0; /* out of range */
1302: mtime.tv_sec = ull;
1.66 stevesk 1303: mtime.tv_usec = strtol(cp, &cp, 10);
1.176 guenther 1304: if (!cp || *cp++ != ' ' || mtime.tv_usec < 0 ||
1305: mtime.tv_usec > 999999)
1.1 deraadt 1306: SCREWUP("mtime.usec not delimited");
1.176 guenther 1307: if (!isdigit((unsigned char)*cp))
1308: SCREWUP("atime.sec not present");
1309: ull = strtoull(cp, &cp, 10);
1.66 stevesk 1310: if (!cp || *cp++ != ' ')
1.1 deraadt 1311: SCREWUP("atime.sec not delimited");
1.189 millert 1312: if (TYPE_OVERFLOW(time_t, ull))
1.176 guenther 1313: setimes = 0; /* out of range */
1314: atime.tv_sec = ull;
1.66 stevesk 1315: atime.tv_usec = strtol(cp, &cp, 10);
1.176 guenther 1316: if (!cp || *cp++ != '\0' || atime.tv_usec < 0 ||
1317: atime.tv_usec > 999999)
1.1 deraadt 1318: SCREWUP("atime.usec not delimited");
1.107 deraadt 1319: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 1320: continue;
1321: }
1322: if (*cp != 'C' && *cp != 'D') {
1323: /*
1324: * Check for the case "rcp remote:foo\* local:bar".
1325: * In this case, the line "No match." can be returned
1326: * by the shell before the rcp command on the remote is
1327: * executed so the ^Aerror_message convention isn't
1328: * followed.
1329: */
1330: if (first) {
1331: run_err("%s", cp);
1332: exit(1);
1333: }
1334: SCREWUP("expected control record");
1335: }
1336: mode = 0;
1337: for (++cp; cp < buf + 5; cp++) {
1338: if (*cp < '0' || *cp > '7')
1339: SCREWUP("bad mode");
1340: mode = (mode << 3) | (*cp - '0');
1341: }
1.197 dtucker 1342: if (!pflag)
1343: mode &= ~mask;
1.1 deraadt 1344: if (*cp++ != ' ')
1345: SCREWUP("mode not delimited");
1346:
1.188 millert 1347: if (!isdigit((unsigned char)*cp))
1348: SCREWUP("size not present");
1349: ull = strtoull(cp, &cp, 10);
1350: if (!cp || *cp++ != ' ')
1.1 deraadt 1351: SCREWUP("size not delimited");
1.189 millert 1352: if (TYPE_OVERFLOW(off_t, ull))
1.188 millert 1353: SCREWUP("size out of range");
1354: size = (off_t)ull;
1355:
1.198 djm 1356: if (*cp == '\0' || strchr(cp, '/') != NULL ||
1357: strcmp(cp, ".") == 0 || strcmp(cp, "..") == 0) {
1.114 markus 1358: run_err("error: unexpected filename: %s", cp);
1359: exit(1);
1360: }
1.204 djm 1361: if (npatterns > 0) {
1362: for (n = 0; n < npatterns; n++) {
1363: if (fnmatch(patterns[n], cp, 0) == 0)
1364: break;
1365: }
1366: if (n >= npatterns)
1367: SCREWUP("filename does not match request");
1368: }
1.1 deraadt 1369: if (targisdir) {
1370: static char *namebuf;
1.124 djm 1371: static size_t cursize;
1.1 deraadt 1372: size_t need;
1373:
1374: need = strlen(targ) + strlen(cp) + 250;
1.55 deraadt 1375: if (need > cursize) {
1.173 djm 1376: free(namebuf);
1.18 markus 1377: namebuf = xmalloc(need);
1.55 deraadt 1378: cursize = need;
1379: }
1380: (void) snprintf(namebuf, need, "%s%s%s", targ,
1.88 mouring 1381: strcmp(targ, "/") ? "/" : "", cp);
1.1 deraadt 1382: np = namebuf;
1383: } else
1384: np = targ;
1.12 aaron 1385: curfile = cp;
1.1 deraadt 1386: exists = stat(np, &stb) == 0;
1387: if (buf[0] == 'D') {
1388: int mod_flag = pflag;
1.114 markus 1389: if (!iamrecursive)
1390: SCREWUP("received directory without -r");
1.1 deraadt 1391: if (exists) {
1392: if (!S_ISDIR(stb.st_mode)) {
1393: errno = ENOTDIR;
1394: goto bad;
1395: }
1396: if (pflag)
1.18 markus 1397: (void) chmod(np, mode);
1.1 deraadt 1398: } else {
1.18 markus 1399: /* Handle copying from a read-only
1400: directory */
1.1 deraadt 1401: mod_flag = 1;
1.205 deraadt 1402: if (mkdir(np, mode | S_IRWXU) == -1)
1.1 deraadt 1403: goto bad;
1404: }
1.58 danh 1405: vect[0] = xstrdup(np);
1.202 djm 1406: sink(1, vect, src);
1.1 deraadt 1407: if (setimes) {
1408: setimes = 0;
1.210 djm 1409: (void) utimes(vect[0], tv);
1.1 deraadt 1410: }
1411: if (mod_flag)
1.59 deraadt 1412: (void) chmod(vect[0], mode);
1.173 djm 1413: free(vect[0]);
1.1 deraadt 1414: continue;
1415: }
1416: omode = mode;
1.174 dtucker 1417: mode |= S_IWUSR;
1.205 deraadt 1418: if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) == -1) {
1.1 deraadt 1419: bad: run_err("%s: %s", np, strerror(errno));
1420: continue;
1421: }
1.107 deraadt 1422: (void) atomicio(vwrite, remout, "", 1);
1.161 djm 1423: if ((bp = allocbuf(&buffer, ofd, COPY_BUFLEN)) == NULL) {
1.18 markus 1424: (void) close(ofd);
1.1 deraadt 1425: continue;
1426: }
1427: cp = bp->buf;
1.209 djm 1428: wrerr = 0;
1.7 deraadt 1429:
1.209 djm 1430: /*
1431: * NB. do not use run_err() unless immediately followed by
1432: * exit() below as it may send a spurious reply that might
1433: * desyncronise us from the peer. Use note_err() instead.
1434: */
1.12 aaron 1435: statbytes = 0;
1.97 fgsch 1436: if (showprogress)
1437: start_progress_meter(curfile, size, &statbytes);
1.161 djm 1438: set_nonblock(remin);
1439: for (count = i = 0; i < size; i += bp->cnt) {
1440: amt = bp->cnt;
1.1 deraadt 1441: if (i + amt > size)
1442: amt = size - i;
1443: count += amt;
1444: do {
1.167 djm 1445: j = atomicio6(read, remin, cp, amt,
1446: scpio, &statbytes);
1.122 avsm 1447: if (j == 0) {
1.161 djm 1448: run_err("%s", j != EPIPE ?
1449: strerror(errno) :
1.63 stevesk 1450: "dropped connection");
1.1 deraadt 1451: exit(1);
1452: }
1453: amt -= j;
1454: cp += j;
1455: } while (amt > 0);
1.112 djm 1456:
1.1 deraadt 1457: if (count == bp->cnt) {
1458: /* Keep reading so we stay sync'd up. */
1.209 djm 1459: if (!wrerr) {
1.122 avsm 1460: if (atomicio(vwrite, ofd, bp->buf,
1461: count) != count) {
1.209 djm 1462: note_err("%s: %s", np,
1463: strerror(errno));
1464: wrerr = 1;
1.1 deraadt 1465: }
1466: }
1467: count = 0;
1468: cp = bp->buf;
1469: }
1470: }
1.161 djm 1471: unset_nonblock(remin);
1.209 djm 1472: if (count != 0 && !wrerr &&
1.122 avsm 1473: atomicio(vwrite, ofd, bp->buf, count) != count) {
1.209 djm 1474: note_err("%s: %s", np, strerror(errno));
1475: wrerr = 1;
1.1 deraadt 1476: }
1.209 djm 1477: if (!wrerr && (!exists || S_ISREG(stb.st_mode)) &&
1478: ftruncate(ofd, size) != 0)
1479: note_err("%s: truncate: %s", np, strerror(errno));
1.1 deraadt 1480: if (pflag) {
1481: if (exists || omode != mode)
1.116 dtucker 1482: if (fchmod(ofd, omode)) {
1.209 djm 1483: note_err("%s: set mode: %s",
1.63 stevesk 1484: np, strerror(errno));
1.116 dtucker 1485: }
1.1 deraadt 1486: } else {
1487: if (!exists && omode != mode)
1.116 dtucker 1488: if (fchmod(ofd, omode & ~mask)) {
1.209 djm 1489: note_err("%s: set mode: %s",
1.63 stevesk 1490: np, strerror(errno));
1.116 dtucker 1491: }
1.1 deraadt 1492: }
1.209 djm 1493: if (close(ofd) == -1)
1.211 millert 1494: note_err("%s: close: %s", np, strerror(errno));
1.18 markus 1495: (void) response();
1.185 dtucker 1496: if (showprogress)
1497: stop_progress_meter();
1.209 djm 1498: if (setimes && !wrerr) {
1.1 deraadt 1499: setimes = 0;
1.205 deraadt 1500: if (utimes(np, tv) == -1) {
1.209 djm 1501: note_err("%s: set times: %s",
1.63 stevesk 1502: np, strerror(errno));
1.1 deraadt 1503: }
1504: }
1.209 djm 1505: /* If no error was noted then signal success for this file */
1506: if (note_err(NULL) == 0)
1.107 deraadt 1507: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 1508: }
1.204 djm 1509: done:
1510: for (n = 0; n < npatterns; n++)
1511: free(patterns[n]);
1512: free(patterns);
1513: return;
1.1 deraadt 1514: screwup:
1.204 djm 1515: for (n = 0; n < npatterns; n++)
1516: free(patterns[n]);
1517: free(patterns);
1.1 deraadt 1518: run_err("protocol error: %s", why);
1519: exit(1);
1520: }
1521:
1522: int
1.86 itojun 1523: response(void)
1.1 deraadt 1524: {
1.186 schwarze 1525: char ch, *cp, resp, rbuf[2048], visbuf[2048];
1.1 deraadt 1526:
1.30 deraadt 1527: if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp))
1.1 deraadt 1528: lostconn(0);
1529:
1530: cp = rbuf;
1.18 markus 1531: switch (resp) {
1532: case 0: /* ok */
1.1 deraadt 1533: return (0);
1534: default:
1535: *cp++ = resp;
1536: /* FALLTHROUGH */
1.18 markus 1537: case 1: /* error, followed by error msg */
1538: case 2: /* fatal error, "" */
1.1 deraadt 1539: do {
1.30 deraadt 1540: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 1541: lostconn(0);
1542: *cp++ = ch;
1543: } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n');
1544:
1.186 schwarze 1545: if (!iamremote) {
1546: cp[-1] = '\0';
1547: (void) snmprintf(visbuf, sizeof(visbuf),
1548: NULL, "%s\n", rbuf);
1549: (void) atomicio(vwrite, STDERR_FILENO,
1550: visbuf, strlen(visbuf));
1551: }
1.1 deraadt 1552: ++errs;
1553: if (resp == 1)
1554: return (-1);
1555: exit(1);
1556: }
1557: /* NOTREACHED */
1558: }
1559:
1560: void
1.86 itojun 1561: usage(void)
1.1 deraadt 1562: {
1.83 stevesk 1563: (void) fprintf(stderr,
1.212 ! djm 1564: "usage: scp [-346ABCpqrTv] [-c cipher] [-F ssh_config] [-i identity_file]\n"
1.199 tb 1565: " [-J destination] [-l limit] [-o ssh_option] [-P port]\n"
1566: " [-S program] source ... target\n");
1.1 deraadt 1567: exit(1);
1568: }
1569:
1570: void
1.18 markus 1571: run_err(const char *fmt,...)
1.1 deraadt 1572: {
1573: static FILE *fp;
1574: va_list ap;
1575:
1576: ++errs;
1.136 biorn 1577: if (fp != NULL || (remout != -1 && (fp = fdopen(remout, "w")))) {
1578: (void) fprintf(fp, "%c", 0x01);
1579: (void) fprintf(fp, "scp: ");
1580: va_start(ap, fmt);
1581: (void) vfprintf(fp, fmt, ap);
1582: va_end(ap);
1583: (void) fprintf(fp, "\n");
1584: (void) fflush(fp);
1585: }
1.18 markus 1586:
1587: if (!iamremote) {
1.73 markus 1588: va_start(ap, fmt);
1.186 schwarze 1589: vfmprintf(stderr, fmt, ap);
1.73 markus 1590: va_end(ap);
1.18 markus 1591: fprintf(stderr, "\n");
1592: }
1.209 djm 1593: }
1594:
1595: /*
1596: * Notes a sink error for sending at the end of a file transfer. Returns 0 if
1597: * no error has been noted or -1 otherwise. Use note_err(NULL) to flush
1598: * any active error at the end of the transfer.
1599: */
1600: int
1601: note_err(const char *fmt, ...)
1602: {
1603: static char *emsg;
1604: va_list ap;
1605:
1606: /* Replay any previously-noted error */
1607: if (fmt == NULL) {
1608: if (emsg == NULL)
1609: return 0;
1610: run_err("%s", emsg);
1611: free(emsg);
1612: emsg = NULL;
1613: return -1;
1614: }
1615:
1616: errs++;
1617: /* Prefer first-noted error */
1618: if (emsg != NULL)
1619: return -1;
1620:
1621: va_start(ap, fmt);
1622: vasnmprintf(&emsg, INT_MAX, NULL, fmt, ap);
1623: va_end(ap);
1624: return -1;
1.1 deraadt 1625: }
1626:
1627: void
1.104 djm 1628: verifydir(char *cp)
1.1 deraadt 1629: {
1630: struct stat stb;
1631:
1632: if (!stat(cp, &stb)) {
1633: if (S_ISDIR(stb.st_mode))
1634: return;
1635: errno = ENOTDIR;
1636: }
1637: run_err("%s: %s", cp, strerror(errno));
1.123 avsm 1638: killchild(0);
1.1 deraadt 1639: }
1640:
1641: int
1.104 djm 1642: okname(char *cp0)
1.1 deraadt 1643: {
1644: int c;
1645: char *cp;
1646:
1647: cp = cp0;
1648: do {
1.75 deraadt 1649: c = (int)*cp;
1.1 deraadt 1650: if (c & 0200)
1651: goto bad;
1.179 deraadt 1652: if (!isalpha(c) && !isdigit((unsigned char)c)) {
1.101 markus 1653: switch (c) {
1654: case '\'':
1655: case '"':
1656: case '`':
1657: case ' ':
1658: case '#':
1659: goto bad;
1660: default:
1661: break;
1662: }
1663: }
1.1 deraadt 1664: } while (*++cp);
1665: return (1);
1666:
1.186 schwarze 1667: bad: fmprintf(stderr, "%s: invalid user name\n", cp0);
1.1 deraadt 1668: return (0);
1669: }
1670:
1671: BUF *
1.104 djm 1672: allocbuf(BUF *bp, int fd, int blksize)
1.1 deraadt 1673: {
1674: size_t size;
1675: struct stat stb;
1676:
1.205 deraadt 1677: if (fstat(fd, &stb) == -1) {
1.1 deraadt 1678: run_err("fstat: %s", strerror(errno));
1679: return (0);
1680: }
1.187 deraadt 1681: size = ROUNDUP(stb.st_blksize, blksize);
1.95 markus 1682: if (size == 0)
1.18 markus 1683: size = blksize;
1.1 deraadt 1684: if (bp->cnt >= size)
1685: return (bp);
1.192 deraadt 1686: bp->buf = xrecallocarray(bp->buf, bp->cnt, size, 1);
1.1 deraadt 1687: bp->cnt = size;
1688: return (bp);
1689: }
1690:
1691: void
1.104 djm 1692: lostconn(int signo)
1.1 deraadt 1693: {
1694: if (!iamremote)
1.172 dtucker 1695: (void)write(STDERR_FILENO, "lost connection\n", 16);
1.74 markus 1696: if (signo)
1697: _exit(1);
1698: else
1699: exit(1);
1.4 aaron 1700: }
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