Annotation of src/usr.bin/ssh/scp.c, Revision 1.207
1.207 ! dtucker 1: /* $OpenBSD: scp.c,v 1.206 2019/09/09 02:31:19 dtucker 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: }
331: addargs(&args, "--");
332: addargs(&args, "%s", host);
333: addargs(&args, "%s", cmd);
334:
335: execvp(ssh_program, args.list);
336: perror(ssh_program);
337: exit(1);
338: } else if (pid == -1) {
339: fatal("fork: %s", strerror(errno));
340: }
341: while (waitpid(pid, &status, 0) == -1)
342: if (errno != EINTR)
343: fatal("do_cmd2: waitpid: %s", strerror(errno));
344: return 0;
345: }
346:
1.1 deraadt 347: typedef struct {
1.124 djm 348: size_t cnt;
1.1 deraadt 349: char *buf;
350: } BUF;
351:
1.18 markus 352: BUF *allocbuf(BUF *, int, int);
353: void lostconn(int);
354: int okname(char *);
355: void run_err(const char *,...);
356: void verifydir(char *);
1.1 deraadt 357:
358: struct passwd *pwd;
1.18 markus 359: uid_t userid;
1.1 deraadt 360: int errs, remin, remout;
1.202 djm 361: int Tflag, pflag, iamremote, iamrecursive, targetshouldbedirectory;
1.1 deraadt 362:
363: #define CMDNEEDS 64
364: char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */
365:
1.18 markus 366: int response(void);
367: void rsource(char *, struct stat *);
1.202 djm 368: void sink(int, char *[], const char *);
1.18 markus 369: void source(int, char *[]);
370: void tolocal(int, char *[]);
1.193 millert 371: void toremote(int, char *[]);
1.18 markus 372: void usage(void);
1.1 deraadt 373:
374: int
1.104 djm 375: main(int argc, char **argv)
1.1 deraadt 376: {
1.145 djm 377: int ch, fflag, tflag, status, n;
1.193 millert 378: char **newargv;
1.167 djm 379: const char *errstr;
1.1 deraadt 380: extern char *optarg;
381: extern int optind;
1.126 djm 382:
383: /* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */
384: sanitise_stdfd();
1.145 djm 385:
1.186 schwarze 386: setlocale(LC_CTYPE, "");
387:
1.145 djm 388: /* Copy argv, because we modify it */
1.187 deraadt 389: newargv = xcalloc(MAXIMUM(argc + 1, 1), sizeof(*newargv));
1.145 djm 390: for (n = 0; n < argc; n++)
391: newargv[n] = xstrdup(argv[n]);
392: argv = newargv;
1.1 deraadt 393:
1.129 djm 394: memset(&args, '\0', sizeof(args));
1.168 djm 395: memset(&remote_remote_args, '\0', sizeof(remote_remote_args));
396: args.list = remote_remote_args.list = NULL;
1.129 djm 397: addargs(&args, "%s", ssh_program);
1.70 mouring 398: addargs(&args, "-x");
1.168 djm 399: addargs(&args, "-oForwardAgent=no");
400: addargs(&args, "-oPermitLocalCommand=no");
401: addargs(&args, "-oClearAllForwardings=yes");
1.195 djm 402: addargs(&args, "-oRemoteCommand=none");
403: addargs(&args, "-oRequestTTY=no");
1.41 markus 404:
1.202 djm 405: fflag = Tflag = tflag = 0;
406: while ((ch = getopt(argc, argv,
407: "dfl:prtTvBCc:i:P:q12346S:o:F:J:")) != -1) {
1.18 markus 408: switch (ch) {
409: /* User-visible flags. */
1.100 markus 410: case '1':
1.190 djm 411: fatal("SSH protocol v.1 is no longer supported");
412: break;
1.100 markus 413: case '2':
1.190 djm 414: /* Ignored */
415: break;
1.23 markus 416: case '4':
1.41 markus 417: case '6':
418: case 'C':
1.70 mouring 419: addargs(&args, "-%c", ch);
1.168 djm 420: addargs(&remote_remote_args, "-%c", ch);
1.41 markus 421: break;
1.169 markus 422: case '3':
423: throughlocal = 1;
424: break;
1.41 markus 425: case 'o':
426: case 'c':
427: case 'i':
1.83 stevesk 428: case 'F':
1.199 tb 429: case 'J':
1.168 djm 430: addargs(&remote_remote_args, "-%c", ch);
431: addargs(&remote_remote_args, "%s", optarg);
1.165 guenther 432: addargs(&args, "-%c", ch);
433: addargs(&args, "%s", optarg);
1.23 markus 434: break;
1.41 markus 435: case 'P':
1.193 millert 436: sshport = a2port(optarg);
437: if (sshport <= 0)
438: fatal("bad port \"%s\"\n", optarg);
1.41 markus 439: break;
440: case 'B':
1.168 djm 441: addargs(&remote_remote_args, "-oBatchmode=yes");
442: addargs(&args, "-oBatchmode=yes");
1.23 markus 443: break;
1.99 markus 444: case 'l':
1.167 djm 445: limit_kbps = strtonum(optarg, 1, 100 * 1024 * 1024,
446: &errstr);
447: if (errstr != NULL)
1.99 markus 448: usage();
1.167 djm 449: limit_kbps *= 1024; /* kbps */
450: bandwidth_limit_init(&bwlimit, limit_kbps, COPY_BUFLEN);
1.99 markus 451: break;
1.1 deraadt 452: case 'p':
453: pflag = 1;
454: break;
455: case 'r':
456: iamrecursive = 1;
457: break;
1.34 deraadt 458: case 'S':
1.41 markus 459: ssh_program = xstrdup(optarg);
460: break;
461: case 'v':
1.72 markus 462: addargs(&args, "-v");
1.168 djm 463: addargs(&remote_remote_args, "-v");
1.41 markus 464: verbose_mode = 1;
465: break;
466: case 'q':
1.111 dtucker 467: addargs(&args, "-q");
1.168 djm 468: addargs(&remote_remote_args, "-q");
1.41 markus 469: showprogress = 0;
1.34 deraadt 470: break;
471:
1.18 markus 472: /* Server options. */
1.1 deraadt 473: case 'd':
474: targetshouldbedirectory = 1;
475: break;
1.18 markus 476: case 'f': /* "from" */
1.1 deraadt 477: iamremote = 1;
478: fflag = 1;
479: break;
1.18 markus 480: case 't': /* "to" */
1.1 deraadt 481: iamremote = 1;
482: tflag = 1;
483: break;
1.202 djm 484: case 'T':
485: Tflag = 1;
486: break;
1.1 deraadt 487: default:
488: usage();
489: }
1.202 djm 490: }
1.1 deraadt 491: argc -= optind;
492: argv += optind;
493:
494: if ((pwd = getpwuid(userid = getuid())) == NULL)
1.108 deraadt 495: fatal("unknown user %u", (u_int) userid);
1.1 deraadt 496:
1.156 djm 497: if (!isatty(STDOUT_FILENO))
1.7 deraadt 498: showprogress = 0;
1.184 deraadt 499:
500: if (pflag) {
501: /* Cannot pledge: -p allows setuid/setgid files... */
502: } else {
503: if (pledge("stdio rpath wpath cpath fattr tty proc exec",
504: NULL) == -1) {
505: perror("pledge");
506: exit(1);
507: }
508: }
1.7 deraadt 509:
1.1 deraadt 510: remin = STDIN_FILENO;
511: remout = STDOUT_FILENO;
512:
1.52 stevesk 513: if (fflag) {
1.18 markus 514: /* Follow "protocol", send data. */
515: (void) response();
1.1 deraadt 516: source(argc, argv);
517: exit(errs != 0);
518: }
1.18 markus 519: if (tflag) {
520: /* Receive data. */
1.202 djm 521: sink(argc, argv, NULL);
1.1 deraadt 522: exit(errs != 0);
523: }
524: if (argc < 2)
525: usage();
526: if (argc > 2)
527: targetshouldbedirectory = 1;
528:
529: remin = remout = -1;
1.92 markus 530: do_cmd_pid = -1;
1.1 deraadt 531: /* Command to be executed on remote system using "ssh". */
1.55 deraadt 532: (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s",
533: verbose_mode ? " -v" : "",
1.35 deraadt 534: iamrecursive ? " -r" : "", pflag ? " -p" : "",
535: targetshouldbedirectory ? " -d" : "");
1.1 deraadt 536:
1.207 ! dtucker 537: (void) ssh_signal(SIGPIPE, lostconn);
1.1 deraadt 538:
1.193 millert 539: if (colon(argv[argc - 1])) /* Dest is remote host. */
540: toremote(argc, argv);
1.1 deraadt 541: else {
542: if (targetshouldbedirectory)
543: verifydir(argv[argc - 1]);
1.130 djm 544: tolocal(argc, argv); /* Dest is local host. */
1.92 markus 545: }
546: /*
547: * Finally check the exit status of the ssh process, if one was forked
1.164 stevesk 548: * and no error has occurred yet
1.92 markus 549: */
550: if (do_cmd_pid != -1 && errs == 0) {
551: if (remin != -1)
552: (void) close(remin);
553: if (remout != -1)
554: (void) close(remout);
555: if (waitpid(do_cmd_pid, &status, 0) == -1)
556: errs = 1;
557: else {
558: if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
559: errs = 1;
560: }
1.1 deraadt 561: }
562: exit(errs != 0);
563: }
564:
1.167 djm 565: /* Callback from atomicio6 to update progress meter and limit bandwidth */
566: static int
567: scpio(void *_cnt, size_t s)
1.161 djm 568: {
1.167 djm 569: off_t *cnt = (off_t *)_cnt;
570:
571: *cnt += s;
1.201 dtucker 572: refresh_progress_meter(0);
1.167 djm 573: if (limit_kbps > 0)
574: bandwidth_limit(&bwlimit, s);
575: return 0;
1.161 djm 576: }
577:
1.176 guenther 578: static int
579: do_times(int fd, int verb, const struct stat *sb)
580: {
581: /* strlen(2^64) == 20; strlen(10^6) == 7 */
582: char buf[(20 + 7 + 2) * 2 + 2];
583:
584: (void)snprintf(buf, sizeof(buf), "T%llu 0 %llu 0\n",
585: (unsigned long long) (sb->st_mtime < 0 ? 0 : sb->st_mtime),
586: (unsigned long long) (sb->st_atime < 0 ? 0 : sb->st_atime));
587: if (verb) {
588: fprintf(stderr, "File mtime %lld atime %lld\n",
589: (long long)sb->st_mtime, (long long)sb->st_atime);
590: fprintf(stderr, "Sending file timestamps: %s", buf);
591: }
592: (void) atomicio(vwrite, fd, buf, strlen(buf));
593: return (response());
594: }
595:
1.194 millert 596: static int
597: parse_scp_uri(const char *uri, char **userp, char **hostp, int *portp,
598: char **pathp)
599: {
600: int r;
601:
602: r = parse_uri("scp", uri, userp, hostp, portp, pathp);
603: if (r == 0 && *pathp == NULL)
604: *pathp = xstrdup(".");
605: return r;
606: }
607:
1.204 djm 608: /* Appends a string to an array; returns 0 on success, -1 on alloc failure */
609: static int
610: append(char *cp, char ***ap, size_t *np)
611: {
612: char **tmp;
613:
614: if ((tmp = reallocarray(*ap, *np + 1, sizeof(*tmp))) == NULL)
615: return -1;
616: tmp[(*np)] = cp;
617: (*np)++;
618: *ap = tmp;
619: return 0;
620: }
621:
622: /*
623: * Finds the start and end of the first brace pair in the pattern.
624: * returns 0 on success or -1 for invalid patterns.
625: */
626: static int
627: find_brace(const char *pattern, int *startp, int *endp)
628: {
629: int i;
630: int in_bracket, brace_level;
631:
632: *startp = *endp = -1;
633: in_bracket = brace_level = 0;
634: for (i = 0; i < INT_MAX && *endp < 0 && pattern[i] != '\0'; i++) {
635: switch (pattern[i]) {
636: case '\\':
637: /* skip next character */
638: if (pattern[i + 1] != '\0')
639: i++;
640: break;
641: case '[':
642: in_bracket = 1;
643: break;
644: case ']':
645: in_bracket = 0;
646: break;
647: case '{':
648: if (in_bracket)
649: break;
650: if (pattern[i + 1] == '}') {
651: /* Protect a single {}, for find(1), like csh */
652: i++; /* skip */
653: break;
654: }
655: if (*startp == -1)
656: *startp = i;
657: brace_level++;
658: break;
659: case '}':
660: if (in_bracket)
661: break;
662: if (*startp < 0) {
663: /* Unbalanced brace */
664: return -1;
665: }
666: if (--brace_level <= 0)
667: *endp = i;
668: break;
669: }
670: }
671: /* unbalanced brackets/braces */
672: if (*endp < 0 && (*startp >= 0 || in_bracket))
673: return -1;
674: return 0;
675: }
676:
677: /*
678: * Assembles and records a successfully-expanded pattern, returns -1 on
679: * alloc failure.
680: */
681: static int
682: emit_expansion(const char *pattern, int brace_start, int brace_end,
683: int sel_start, int sel_end, char ***patternsp, size_t *npatternsp)
684: {
685: char *cp;
686: int o = 0, tail_len = strlen(pattern + brace_end + 1);
687:
688: if ((cp = malloc(brace_start + (sel_end - sel_start) +
689: tail_len + 1)) == NULL)
690: return -1;
691:
692: /* Pattern before initial brace */
693: if (brace_start > 0) {
694: memcpy(cp, pattern, brace_start);
695: o = brace_start;
696: }
697: /* Current braced selection */
698: if (sel_end - sel_start > 0) {
699: memcpy(cp + o, pattern + sel_start,
700: sel_end - sel_start);
701: o += sel_end - sel_start;
702: }
703: /* Remainder of pattern after closing brace */
704: if (tail_len > 0) {
705: memcpy(cp + o, pattern + brace_end + 1, tail_len);
706: o += tail_len;
707: }
708: cp[o] = '\0';
709: if (append(cp, patternsp, npatternsp) != 0) {
710: free(cp);
711: return -1;
712: }
713: return 0;
714: }
715:
716: /*
717: * Expand the first encountered brace in pattern, appending the expanded
718: * patterns it yielded to the *patternsp array.
719: *
720: * Returns 0 on success or -1 on allocation failure.
721: *
722: * Signals whether expansion was performed via *expanded and whether
723: * pattern was invalid via *invalid.
724: */
725: static int
726: brace_expand_one(const char *pattern, char ***patternsp, size_t *npatternsp,
727: int *expanded, int *invalid)
728: {
729: int i;
730: int in_bracket, brace_start, brace_end, brace_level;
731: int sel_start, sel_end;
732:
733: *invalid = *expanded = 0;
734:
735: if (find_brace(pattern, &brace_start, &brace_end) != 0) {
736: *invalid = 1;
737: return 0;
738: } else if (brace_start == -1)
739: return 0;
740:
741: in_bracket = brace_level = 0;
742: for (i = sel_start = brace_start + 1; i < brace_end; i++) {
743: switch (pattern[i]) {
744: case '{':
745: if (in_bracket)
746: break;
747: brace_level++;
748: break;
749: case '}':
750: if (in_bracket)
751: break;
752: brace_level--;
753: break;
754: case '[':
755: in_bracket = 1;
756: break;
757: case ']':
758: in_bracket = 0;
759: break;
760: case '\\':
761: if (i < brace_end - 1)
762: i++; /* skip */
763: break;
764: }
765: if (pattern[i] == ',' || i == brace_end - 1) {
766: if (in_bracket || brace_level > 0)
767: continue;
768: /* End of a selection, emit an expanded pattern */
769:
770: /* Adjust end index for last selection */
771: sel_end = (i == brace_end - 1) ? brace_end : i;
772: if (emit_expansion(pattern, brace_start, brace_end,
773: sel_start, sel_end, patternsp, npatternsp) != 0)
774: return -1;
775: /* move on to the next selection */
776: sel_start = i + 1;
777: continue;
778: }
779: }
780: if (in_bracket || brace_level > 0) {
781: *invalid = 1;
782: return 0;
783: }
784: /* success */
785: *expanded = 1;
786: return 0;
787: }
788:
789: /* Expand braces from pattern. Returns 0 on success, -1 on failure */
790: static int
791: brace_expand(const char *pattern, char ***patternsp, size_t *npatternsp)
792: {
793: char *cp, *cp2, **active = NULL, **done = NULL;
794: size_t i, nactive = 0, ndone = 0;
795: int ret = -1, invalid = 0, expanded = 0;
796:
797: *patternsp = NULL;
798: *npatternsp = 0;
799:
800: /* Start the worklist with the original pattern */
801: if ((cp = strdup(pattern)) == NULL)
802: return -1;
803: if (append(cp, &active, &nactive) != 0) {
804: free(cp);
805: return -1;
806: }
807: while (nactive > 0) {
808: cp = active[nactive - 1];
809: nactive--;
810: if (brace_expand_one(cp, &active, &nactive,
811: &expanded, &invalid) == -1) {
812: free(cp);
813: goto fail;
814: }
815: if (invalid)
816: fatal("%s: invalid brace pattern \"%s\"", __func__, cp);
817: if (expanded) {
818: /*
819: * Current entry expanded to new entries on the
820: * active list; discard the progenitor pattern.
821: */
822: free(cp);
823: continue;
824: }
825: /*
826: * Pattern did not expand; append the finename component to
827: * the completed list
828: */
829: if ((cp2 = strrchr(cp, '/')) != NULL)
830: *cp2++ = '\0';
831: else
832: cp2 = cp;
833: if (append(xstrdup(cp2), &done, &ndone) != 0) {
834: free(cp);
835: goto fail;
836: }
837: free(cp);
838: }
839: /* success */
840: *patternsp = done;
841: *npatternsp = ndone;
842: done = NULL;
843: ndone = 0;
844: ret = 0;
845: fail:
846: for (i = 0; i < nactive; i++)
847: free(active[i]);
848: free(active);
849: for (i = 0; i < ndone; i++)
850: free(done[i]);
851: free(done);
852: return ret;
853: }
854:
1.1 deraadt 855: void
1.193 millert 856: toremote(int argc, char **argv)
1.1 deraadt 857: {
1.193 millert 858: char *suser = NULL, *host = NULL, *src = NULL;
859: char *bp, *tuser, *thost, *targ;
860: int sport = -1, tport = -1;
1.129 djm 861: arglist alist;
1.193 millert 862: int i, r;
1.168 djm 863: u_int j;
1.129 djm 864:
865: memset(&alist, '\0', sizeof(alist));
866: alist.list = NULL;
1.1 deraadt 867:
1.193 millert 868: /* Parse target */
1.194 millert 869: r = parse_scp_uri(argv[argc - 1], &tuser, &thost, &tport, &targ);
870: if (r == -1) {
871: fmprintf(stderr, "%s: invalid uri\n", argv[argc - 1]);
872: ++errs;
873: goto out;
874: }
1.193 millert 875: if (r != 0) {
876: if (parse_user_host_path(argv[argc - 1], &tuser, &thost,
1.194 millert 877: &targ) == -1) {
878: fmprintf(stderr, "%s: invalid target\n", argv[argc - 1]);
879: ++errs;
1.193 millert 880: goto out;
1.194 millert 881: }
1.129 djm 882: }
1.194 millert 883: if (tuser != NULL && !okname(tuser)) {
884: ++errs;
1.193 millert 885: goto out;
1.194 millert 886: }
1.129 djm 887:
1.193 millert 888: /* Parse source files */
1.1 deraadt 889: for (i = 0; i < argc - 1; i++) {
1.193 millert 890: free(suser);
891: free(host);
892: free(src);
1.194 millert 893: r = parse_scp_uri(argv[i], &suser, &host, &sport, &src);
894: if (r == -1) {
895: fmprintf(stderr, "%s: invalid uri\n", argv[i]);
896: ++errs;
897: continue;
898: }
899: if (r != 0) {
1.193 millert 900: parse_user_host_path(argv[i], &suser, &host, &src);
1.194 millert 901: }
1.193 millert 902: if (suser != NULL && !okname(suser)) {
903: ++errs;
904: continue;
905: }
906: if (host && throughlocal) { /* extended remote to remote */
1.171 djm 907: xasprintf(&bp, "%s -f %s%s", cmd,
908: *src == '-' ? "-- " : "", src);
1.193 millert 909: if (do_cmd(host, suser, sport, bp, &remin, &remout) < 0)
1.169 markus 910: exit(1);
1.173 djm 911: free(bp);
1.171 djm 912: xasprintf(&bp, "%s -t %s%s", cmd,
913: *targ == '-' ? "-- " : "", targ);
1.193 millert 914: if (do_cmd2(thost, tuser, tport, bp, remin, remout) < 0)
1.169 markus 915: exit(1);
1.173 djm 916: free(bp);
1.169 markus 917: (void) close(remin);
918: (void) close(remout);
919: remin = remout = -1;
1.193 millert 920: } else if (host) { /* standard remote to remote */
921: if (tport != -1 && tport != SSH_DEFAULT_PORT) {
922: /* This would require the remote support URIs */
923: fatal("target port not supported with two "
924: "remote hosts without the -3 option");
925: }
926:
1.129 djm 927: freeargs(&alist);
928: addargs(&alist, "%s", ssh_program);
929: addargs(&alist, "-x");
1.168 djm 930: addargs(&alist, "-oClearAllForwardings=yes");
1.129 djm 931: addargs(&alist, "-n");
1.168 djm 932: for (j = 0; j < remote_remote_args.num; j++) {
933: addargs(&alist, "%s",
934: remote_remote_args.list[j]);
935: }
1.193 millert 936:
937: if (sport != -1) {
938: addargs(&alist, "-p");
939: addargs(&alist, "%d", sport);
940: }
941: if (suser) {
1.129 djm 942: addargs(&alist, "-l");
943: addargs(&alist, "%s", suser);
1.23 markus 944: }
1.165 guenther 945: addargs(&alist, "--");
1.129 djm 946: addargs(&alist, "%s", host);
947: addargs(&alist, "%s", cmd);
948: addargs(&alist, "%s", src);
949: addargs(&alist, "%s%s%s:%s",
950: tuser ? tuser : "", tuser ? "@" : "",
951: thost, targ);
952: if (do_local_cmd(&alist) != 0)
1.109 markus 953: errs = 1;
1.18 markus 954: } else { /* local to remote */
1.1 deraadt 955: if (remin == -1) {
1.171 djm 956: xasprintf(&bp, "%s -t %s%s", cmd,
957: *targ == '-' ? "-- " : "", targ);
1.193 millert 958: if (do_cmd(thost, tuser, tport, bp, &remin,
1.140 deraadt 959: &remout) < 0)
1.18 markus 960: exit(1);
1.1 deraadt 961: if (response() < 0)
962: exit(1);
1.173 djm 963: free(bp);
1.1 deraadt 964: }
1.18 markus 965: source(1, argv + i);
1.1 deraadt 966: }
967: }
1.193 millert 968: out:
969: free(tuser);
970: free(thost);
971: free(targ);
972: free(suser);
973: free(host);
974: free(src);
1.1 deraadt 975: }
976:
977: void
1.104 djm 978: tolocal(int argc, char **argv)
1.1 deraadt 979: {
1.193 millert 980: char *bp, *host = NULL, *src = NULL, *suser = NULL;
1.129 djm 981: arglist alist;
1.193 millert 982: int i, r, sport = -1;
1.129 djm 983:
984: memset(&alist, '\0', sizeof(alist));
985: alist.list = NULL;
1.1 deraadt 986:
987: for (i = 0; i < argc - 1; i++) {
1.193 millert 988: free(suser);
989: free(host);
990: free(src);
1.194 millert 991: r = parse_scp_uri(argv[i], &suser, &host, &sport, &src);
1.193 millert 992: if (r == -1) {
1.194 millert 993: fmprintf(stderr, "%s: invalid uri\n", argv[i]);
1.193 millert 994: ++errs;
995: continue;
996: }
997: if (r != 0)
998: parse_user_host_path(argv[i], &suser, &host, &src);
999: if (suser != NULL && !okname(suser)) {
1000: ++errs;
1001: continue;
1002: }
1003: if (!host) { /* Local to local. */
1.129 djm 1004: freeargs(&alist);
1005: addargs(&alist, "%s", _PATH_CP);
1006: if (iamrecursive)
1007: addargs(&alist, "-r");
1008: if (pflag)
1009: addargs(&alist, "-p");
1.165 guenther 1010: addargs(&alist, "--");
1.129 djm 1011: addargs(&alist, "%s", argv[i]);
1012: addargs(&alist, "%s", argv[argc-1]);
1013: if (do_local_cmd(&alist))
1.1 deraadt 1014: ++errs;
1015: continue;
1016: }
1.193 millert 1017: /* Remote to local. */
1.171 djm 1018: xasprintf(&bp, "%s -f %s%s",
1019: cmd, *src == '-' ? "-- " : "", src);
1.193 millert 1020: if (do_cmd(host, suser, sport, bp, &remin, &remout) < 0) {
1.173 djm 1021: free(bp);
1.18 markus 1022: ++errs;
1023: continue;
1.1 deraadt 1024: }
1.173 djm 1025: free(bp);
1.202 djm 1026: sink(1, argv + argc - 1, src);
1.18 markus 1027: (void) close(remin);
1.1 deraadt 1028: remin = remout = -1;
1029: }
1.193 millert 1030: free(suser);
1031: free(host);
1032: free(src);
1.1 deraadt 1033: }
1034:
1035: void
1.104 djm 1036: source(int argc, char **argv)
1.1 deraadt 1037: {
1038: struct stat stb;
1039: static BUF buffer;
1040: BUF *bp;
1.163 dtucker 1041: off_t i, statbytes;
1.180 djm 1042: size_t amt, nr;
1.125 dtucker 1043: int fd = -1, haderr, indx;
1.206 dtucker 1044: char *last, *name, buf[PATH_MAX + 128], encname[PATH_MAX];
1.65 deraadt 1045: int len;
1.1 deraadt 1046:
1047: for (indx = 0; indx < argc; ++indx) {
1.18 markus 1048: name = argv[indx];
1.11 aaron 1049: statbytes = 0;
1.65 deraadt 1050: len = strlen(name);
1051: while (len > 1 && name[len-1] == '/')
1052: name[--len] = '\0';
1.205 deraadt 1053: if ((fd = open(name, O_RDONLY|O_NONBLOCK, 0)) == -1)
1.158 dtucker 1054: goto syserr;
1.85 markus 1055: if (strchr(name, '\n') != NULL) {
1.158 dtucker 1056: strnvis(encname, name, sizeof(encname), VIS_NL);
1057: name = encname;
1.85 markus 1058: }
1.205 deraadt 1059: if (fstat(fd, &stb) == -1) {
1.1 deraadt 1060: syserr: run_err("%s: %s", name, strerror(errno));
1061: goto next;
1062: }
1.163 dtucker 1063: if (stb.st_size < 0) {
1064: run_err("%s: %s", name, "Negative file size");
1065: goto next;
1066: }
1.157 djm 1067: unset_nonblock(fd);
1.1 deraadt 1068: switch (stb.st_mode & S_IFMT) {
1069: case S_IFREG:
1070: break;
1071: case S_IFDIR:
1072: if (iamrecursive) {
1073: rsource(name, &stb);
1074: goto next;
1075: }
1076: /* FALLTHROUGH */
1077: default:
1078: run_err("%s: not a regular file", name);
1079: goto next;
1080: }
1081: if ((last = strrchr(name, '/')) == NULL)
1082: last = name;
1083: else
1084: ++last;
1.11 aaron 1085: curfile = last;
1.1 deraadt 1086: if (pflag) {
1.176 guenther 1087: if (do_times(remout, verbose_mode, &stb) < 0)
1.1 deraadt 1088: goto next;
1089: }
1090: #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
1.61 markus 1091: snprintf(buf, sizeof buf, "C%04o %lld %s\n",
1.47 markus 1092: (u_int) (stb.st_mode & FILEMODEMASK),
1.62 markus 1093: (long long)stb.st_size, last);
1.186 schwarze 1094: if (verbose_mode)
1095: fmprintf(stderr, "Sending file modes: %s", buf);
1.107 deraadt 1096: (void) atomicio(vwrite, remout, buf, strlen(buf));
1.1 deraadt 1097: if (response() < 0)
1098: goto next;
1.161 djm 1099: if ((bp = allocbuf(&buffer, fd, COPY_BUFLEN)) == NULL) {
1.127 deraadt 1100: next: if (fd != -1) {
1101: (void) close(fd);
1102: fd = -1;
1103: }
1.1 deraadt 1104: continue;
1105: }
1.97 fgsch 1106: if (showprogress)
1107: start_progress_meter(curfile, stb.st_size, &statbytes);
1.161 djm 1108: set_nonblock(remout);
1.1 deraadt 1109: for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
1110: amt = bp->cnt;
1.163 dtucker 1111: if (i + (off_t)amt > stb.st_size)
1.1 deraadt 1112: amt = stb.st_size - i;
1113: if (!haderr) {
1.180 djm 1114: if ((nr = atomicio(read, fd,
1115: bp->buf, amt)) != amt) {
1.122 avsm 1116: haderr = errno;
1.180 djm 1117: memset(bp->buf + nr, 0, amt - nr);
1118: }
1.1 deraadt 1119: }
1.161 djm 1120: /* Keep writing after error to retain sync */
1121: if (haderr) {
1122: (void)atomicio(vwrite, remout, bp->buf, amt);
1.180 djm 1123: memset(bp->buf, 0, amt);
1.161 djm 1124: continue;
1.1 deraadt 1125: }
1.167 djm 1126: if (atomicio6(vwrite, remout, bp->buf, amt, scpio,
1.161 djm 1127: &statbytes) != amt)
1128: haderr = errno;
1.1 deraadt 1129: }
1.161 djm 1130: unset_nonblock(remout);
1.4 aaron 1131:
1.127 deraadt 1132: if (fd != -1) {
1.205 deraadt 1133: if (close(fd) == -1 && !haderr)
1.127 deraadt 1134: haderr = errno;
1135: fd = -1;
1136: }
1.1 deraadt 1137: if (!haderr)
1.107 deraadt 1138: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 1139: else
1140: run_err("%s: %s", name, strerror(haderr));
1.18 markus 1141: (void) response();
1.185 dtucker 1142: if (showprogress)
1143: stop_progress_meter();
1.1 deraadt 1144: }
1145: }
1146:
1147: void
1.104 djm 1148: rsource(char *name, struct stat *statp)
1.1 deraadt 1149: {
1150: DIR *dirp;
1151: struct dirent *dp;
1.181 deraadt 1152: char *last, *vect[1], path[PATH_MAX];
1.1 deraadt 1153:
1154: if (!(dirp = opendir(name))) {
1155: run_err("%s: %s", name, strerror(errno));
1156: return;
1157: }
1158: last = strrchr(name, '/');
1.183 mmcc 1159: if (last == NULL)
1.1 deraadt 1160: last = name;
1161: else
1162: last++;
1163: if (pflag) {
1.176 guenther 1164: if (do_times(remout, verbose_mode, statp) < 0) {
1.1 deraadt 1165: closedir(dirp);
1166: return;
1167: }
1168: }
1.55 deraadt 1169: (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n",
1.47 markus 1170: (u_int) (statp->st_mode & FILEMODEMASK), 0, last);
1.18 markus 1171: if (verbose_mode)
1.186 schwarze 1172: fmprintf(stderr, "Entering directory: %s", path);
1.107 deraadt 1173: (void) atomicio(vwrite, remout, path, strlen(path));
1.1 deraadt 1174: if (response() < 0) {
1175: closedir(dirp);
1176: return;
1177: }
1.63 stevesk 1178: while ((dp = readdir(dirp)) != NULL) {
1.1 deraadt 1179: if (dp->d_ino == 0)
1180: continue;
1181: if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
1182: continue;
1183: if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) {
1184: run_err("%s/%s: name too long", name, dp->d_name);
1185: continue;
1186: }
1.55 deraadt 1187: (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name);
1.1 deraadt 1188: vect[0] = path;
1189: source(1, vect);
1190: }
1.18 markus 1191: (void) closedir(dirp);
1.107 deraadt 1192: (void) atomicio(vwrite, remout, "E\n", 2);
1.18 markus 1193: (void) response();
1.1 deraadt 1194: }
1195:
1.189 millert 1196: #define TYPE_OVERFLOW(type, val) \
1197: ((sizeof(type) == 4 && (val) > INT32_MAX) || \
1198: (sizeof(type) == 8 && (val) > INT64_MAX) || \
1199: (sizeof(type) != 4 && sizeof(type) != 8))
1200:
1.1 deraadt 1201: void
1.202 djm 1202: sink(int argc, char **argv, const char *src)
1.1 deraadt 1203: {
1204: static BUF buffer;
1205: struct stat stb;
1.18 markus 1206: enum {
1207: YES, NO, DISPLAYED
1208: } wrerr;
1.1 deraadt 1209: BUF *bp;
1.122 avsm 1210: off_t i;
1.124 djm 1211: size_t j, count;
1.140 deraadt 1212: int amt, exists, first, ofd;
1213: mode_t mode, omode, mask;
1.97 fgsch 1214: off_t size, statbytes;
1.176 guenther 1215: unsigned long long ull;
1.36 deraadt 1216: int setimes, targisdir, wrerrno = 0;
1.186 schwarze 1217: char ch, *cp, *np, *targ, *why, *vect[1], buf[2048], visbuf[2048];
1.204 djm 1218: char **patterns = NULL;
1219: size_t n, npatterns = 0;
1.40 markus 1220: struct timeval tv[2];
1.1 deraadt 1221:
1.66 stevesk 1222: #define atime tv[0]
1223: #define mtime tv[1]
1.118 deraadt 1224: #define SCREWUP(str) { why = str; goto screwup; }
1.1 deraadt 1225:
1.189 millert 1226: if (TYPE_OVERFLOW(time_t, 0) || TYPE_OVERFLOW(off_t, 0))
1227: SCREWUP("Unexpected off_t/time_t size");
1228:
1.1 deraadt 1229: setimes = targisdir = 0;
1230: mask = umask(0);
1231: if (!pflag)
1.18 markus 1232: (void) umask(mask);
1.1 deraadt 1233: if (argc != 1) {
1234: run_err("ambiguous target");
1235: exit(1);
1236: }
1237: targ = *argv;
1238: if (targetshouldbedirectory)
1239: verifydir(targ);
1.18 markus 1240:
1.107 deraadt 1241: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 1242: if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
1243: targisdir = 1;
1.202 djm 1244: if (src != NULL && !iamrecursive && !Tflag) {
1245: /*
1246: * Prepare to try to restrict incoming filenames to match
1247: * the requested destination file glob.
1248: */
1.204 djm 1249: if (brace_expand(src, &patterns, &npatterns) != 0)
1250: fatal("%s: could not expand pattern", __func__);
1.202 djm 1251: }
1.1 deraadt 1252: for (first = 1;; first = 0) {
1253: cp = buf;
1.122 avsm 1254: if (atomicio(read, remin, cp, 1) != 1)
1.204 djm 1255: goto done;
1.1 deraadt 1256: if (*cp++ == '\n')
1257: SCREWUP("unexpected <newline>");
1258: do {
1.30 deraadt 1259: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 1260: SCREWUP("lost connection");
1261: *cp++ = ch;
1262: } while (cp < &buf[sizeof(buf) - 1] && ch != '\n');
1263: *cp = 0;
1.114 markus 1264: if (verbose_mode)
1.186 schwarze 1265: fmprintf(stderr, "Sink: %s", buf);
1.1 deraadt 1266:
1267: if (buf[0] == '\01' || buf[0] == '\02') {
1.186 schwarze 1268: if (iamremote == 0) {
1269: (void) snmprintf(visbuf, sizeof(visbuf),
1270: NULL, "%s", buf + 1);
1.107 deraadt 1271: (void) atomicio(vwrite, STDERR_FILENO,
1.186 schwarze 1272: visbuf, strlen(visbuf));
1273: }
1.1 deraadt 1274: if (buf[0] == '\02')
1275: exit(1);
1276: ++errs;
1277: continue;
1278: }
1279: if (buf[0] == 'E') {
1.107 deraadt 1280: (void) atomicio(vwrite, remout, "", 1);
1.204 djm 1281: goto done;
1.1 deraadt 1282: }
1283: if (ch == '\n')
1284: *--cp = 0;
1285:
1286: cp = buf;
1287: if (*cp == 'T') {
1288: setimes++;
1289: cp++;
1.176 guenther 1290: if (!isdigit((unsigned char)*cp))
1291: SCREWUP("mtime.sec not present");
1292: ull = strtoull(cp, &cp, 10);
1.66 stevesk 1293: if (!cp || *cp++ != ' ')
1.1 deraadt 1294: SCREWUP("mtime.sec not delimited");
1.189 millert 1295: if (TYPE_OVERFLOW(time_t, ull))
1.176 guenther 1296: setimes = 0; /* out of range */
1297: mtime.tv_sec = ull;
1.66 stevesk 1298: mtime.tv_usec = strtol(cp, &cp, 10);
1.176 guenther 1299: if (!cp || *cp++ != ' ' || mtime.tv_usec < 0 ||
1300: mtime.tv_usec > 999999)
1.1 deraadt 1301: SCREWUP("mtime.usec not delimited");
1.176 guenther 1302: if (!isdigit((unsigned char)*cp))
1303: SCREWUP("atime.sec not present");
1304: ull = strtoull(cp, &cp, 10);
1.66 stevesk 1305: if (!cp || *cp++ != ' ')
1.1 deraadt 1306: SCREWUP("atime.sec not delimited");
1.189 millert 1307: if (TYPE_OVERFLOW(time_t, ull))
1.176 guenther 1308: setimes = 0; /* out of range */
1309: atime.tv_sec = ull;
1.66 stevesk 1310: atime.tv_usec = strtol(cp, &cp, 10);
1.176 guenther 1311: if (!cp || *cp++ != '\0' || atime.tv_usec < 0 ||
1312: atime.tv_usec > 999999)
1.1 deraadt 1313: SCREWUP("atime.usec not delimited");
1.107 deraadt 1314: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 1315: continue;
1316: }
1317: if (*cp != 'C' && *cp != 'D') {
1318: /*
1319: * Check for the case "rcp remote:foo\* local:bar".
1320: * In this case, the line "No match." can be returned
1321: * by the shell before the rcp command on the remote is
1322: * executed so the ^Aerror_message convention isn't
1323: * followed.
1324: */
1325: if (first) {
1326: run_err("%s", cp);
1327: exit(1);
1328: }
1329: SCREWUP("expected control record");
1330: }
1331: mode = 0;
1332: for (++cp; cp < buf + 5; cp++) {
1333: if (*cp < '0' || *cp > '7')
1334: SCREWUP("bad mode");
1335: mode = (mode << 3) | (*cp - '0');
1336: }
1.197 dtucker 1337: if (!pflag)
1338: mode &= ~mask;
1.1 deraadt 1339: if (*cp++ != ' ')
1340: SCREWUP("mode not delimited");
1341:
1.188 millert 1342: if (!isdigit((unsigned char)*cp))
1343: SCREWUP("size not present");
1344: ull = strtoull(cp, &cp, 10);
1345: if (!cp || *cp++ != ' ')
1.1 deraadt 1346: SCREWUP("size not delimited");
1.189 millert 1347: if (TYPE_OVERFLOW(off_t, ull))
1.188 millert 1348: SCREWUP("size out of range");
1349: size = (off_t)ull;
1350:
1.198 djm 1351: if (*cp == '\0' || strchr(cp, '/') != NULL ||
1352: strcmp(cp, ".") == 0 || strcmp(cp, "..") == 0) {
1.114 markus 1353: run_err("error: unexpected filename: %s", cp);
1354: exit(1);
1355: }
1.204 djm 1356: if (npatterns > 0) {
1357: for (n = 0; n < npatterns; n++) {
1358: if (fnmatch(patterns[n], cp, 0) == 0)
1359: break;
1360: }
1361: if (n >= npatterns)
1362: SCREWUP("filename does not match request");
1363: }
1.1 deraadt 1364: if (targisdir) {
1365: static char *namebuf;
1.124 djm 1366: static size_t cursize;
1.1 deraadt 1367: size_t need;
1368:
1369: need = strlen(targ) + strlen(cp) + 250;
1.55 deraadt 1370: if (need > cursize) {
1.173 djm 1371: free(namebuf);
1.18 markus 1372: namebuf = xmalloc(need);
1.55 deraadt 1373: cursize = need;
1374: }
1375: (void) snprintf(namebuf, need, "%s%s%s", targ,
1.88 mouring 1376: strcmp(targ, "/") ? "/" : "", cp);
1.1 deraadt 1377: np = namebuf;
1378: } else
1379: np = targ;
1.12 aaron 1380: curfile = cp;
1.1 deraadt 1381: exists = stat(np, &stb) == 0;
1382: if (buf[0] == 'D') {
1383: int mod_flag = pflag;
1.114 markus 1384: if (!iamrecursive)
1385: SCREWUP("received directory without -r");
1.1 deraadt 1386: if (exists) {
1387: if (!S_ISDIR(stb.st_mode)) {
1388: errno = ENOTDIR;
1389: goto bad;
1390: }
1391: if (pflag)
1.18 markus 1392: (void) chmod(np, mode);
1.1 deraadt 1393: } else {
1.18 markus 1394: /* Handle copying from a read-only
1395: directory */
1.1 deraadt 1396: mod_flag = 1;
1.205 deraadt 1397: if (mkdir(np, mode | S_IRWXU) == -1)
1.1 deraadt 1398: goto bad;
1399: }
1.58 danh 1400: vect[0] = xstrdup(np);
1.202 djm 1401: sink(1, vect, src);
1.1 deraadt 1402: if (setimes) {
1403: setimes = 0;
1.205 deraadt 1404: if (utimes(vect[0], tv) == -1)
1.18 markus 1405: run_err("%s: set times: %s",
1.59 deraadt 1406: vect[0], strerror(errno));
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;
1425: wrerr = NO;
1.7 deraadt 1426:
1.12 aaron 1427: statbytes = 0;
1.97 fgsch 1428: if (showprogress)
1429: start_progress_meter(curfile, size, &statbytes);
1.161 djm 1430: set_nonblock(remin);
1431: for (count = i = 0; i < size; i += bp->cnt) {
1432: amt = bp->cnt;
1.1 deraadt 1433: if (i + amt > size)
1434: amt = size - i;
1435: count += amt;
1436: do {
1.167 djm 1437: j = atomicio6(read, remin, cp, amt,
1438: scpio, &statbytes);
1.122 avsm 1439: if (j == 0) {
1.161 djm 1440: run_err("%s", j != EPIPE ?
1441: strerror(errno) :
1.63 stevesk 1442: "dropped connection");
1.1 deraadt 1443: exit(1);
1444: }
1445: amt -= j;
1446: cp += j;
1447: } while (amt > 0);
1.112 djm 1448:
1.1 deraadt 1449: if (count == bp->cnt) {
1450: /* Keep reading so we stay sync'd up. */
1451: if (wrerr == NO) {
1.122 avsm 1452: if (atomicio(vwrite, ofd, bp->buf,
1453: count) != count) {
1.1 deraadt 1454: wrerr = YES;
1.122 avsm 1455: wrerrno = errno;
1.1 deraadt 1456: }
1457: }
1458: count = 0;
1459: cp = bp->buf;
1460: }
1461: }
1.161 djm 1462: unset_nonblock(remin);
1.1 deraadt 1463: if (count != 0 && wrerr == NO &&
1.122 avsm 1464: atomicio(vwrite, ofd, bp->buf, count) != count) {
1.1 deraadt 1465: wrerr = YES;
1.122 avsm 1466: wrerrno = errno;
1.1 deraadt 1467: }
1.159 djm 1468: if (wrerr == NO && (!exists || S_ISREG(stb.st_mode)) &&
1469: ftruncate(ofd, size) != 0) {
1.1 deraadt 1470: run_err("%s: truncate: %s", np, strerror(errno));
1471: wrerr = DISPLAYED;
1472: }
1473: if (pflag) {
1474: if (exists || omode != mode)
1.116 dtucker 1475: if (fchmod(ofd, omode)) {
1.1 deraadt 1476: run_err("%s: set mode: %s",
1.63 stevesk 1477: np, strerror(errno));
1.116 dtucker 1478: wrerr = DISPLAYED;
1479: }
1.1 deraadt 1480: } else {
1481: if (!exists && omode != mode)
1.116 dtucker 1482: if (fchmod(ofd, omode & ~mask)) {
1.1 deraadt 1483: run_err("%s: set mode: %s",
1.63 stevesk 1484: np, strerror(errno));
1.116 dtucker 1485: wrerr = DISPLAYED;
1486: }
1.1 deraadt 1487: }
1.33 provos 1488: if (close(ofd) == -1) {
1489: wrerr = YES;
1490: wrerrno = errno;
1491: }
1.18 markus 1492: (void) response();
1.185 dtucker 1493: if (showprogress)
1494: stop_progress_meter();
1.1 deraadt 1495: if (setimes && wrerr == NO) {
1496: setimes = 0;
1.205 deraadt 1497: if (utimes(np, tv) == -1) {
1.1 deraadt 1498: run_err("%s: set times: %s",
1.63 stevesk 1499: np, strerror(errno));
1.1 deraadt 1500: wrerr = DISPLAYED;
1501: }
1502: }
1.18 markus 1503: switch (wrerr) {
1.1 deraadt 1504: case YES:
1505: run_err("%s: %s", np, strerror(wrerrno));
1506: break;
1507: case NO:
1.107 deraadt 1508: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 1509: break;
1510: case DISPLAYED:
1511: break;
1512: }
1513: }
1.204 djm 1514: done:
1515: for (n = 0; n < npatterns; n++)
1516: free(patterns[n]);
1517: free(patterns);
1518: return;
1.1 deraadt 1519: screwup:
1.204 djm 1520: for (n = 0; n < npatterns; n++)
1521: free(patterns[n]);
1522: free(patterns);
1.1 deraadt 1523: run_err("protocol error: %s", why);
1524: exit(1);
1525: }
1526:
1527: int
1.86 itojun 1528: response(void)
1.1 deraadt 1529: {
1.186 schwarze 1530: char ch, *cp, resp, rbuf[2048], visbuf[2048];
1.1 deraadt 1531:
1.30 deraadt 1532: if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp))
1.1 deraadt 1533: lostconn(0);
1534:
1535: cp = rbuf;
1.18 markus 1536: switch (resp) {
1537: case 0: /* ok */
1.1 deraadt 1538: return (0);
1539: default:
1540: *cp++ = resp;
1541: /* FALLTHROUGH */
1.18 markus 1542: case 1: /* error, followed by error msg */
1543: case 2: /* fatal error, "" */
1.1 deraadt 1544: do {
1.30 deraadt 1545: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 1546: lostconn(0);
1547: *cp++ = ch;
1548: } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n');
1549:
1.186 schwarze 1550: if (!iamremote) {
1551: cp[-1] = '\0';
1552: (void) snmprintf(visbuf, sizeof(visbuf),
1553: NULL, "%s\n", rbuf);
1554: (void) atomicio(vwrite, STDERR_FILENO,
1555: visbuf, strlen(visbuf));
1556: }
1.1 deraadt 1557: ++errs;
1558: if (resp == 1)
1559: return (-1);
1560: exit(1);
1561: }
1562: /* NOTREACHED */
1563: }
1564:
1565: void
1.86 itojun 1566: usage(void)
1.1 deraadt 1567: {
1.83 stevesk 1568: (void) fprintf(stderr,
1.203 jmc 1569: "usage: scp [-346BCpqrTv] [-c cipher] [-F ssh_config] [-i identity_file]\n"
1.199 tb 1570: " [-J destination] [-l limit] [-o ssh_option] [-P port]\n"
1571: " [-S program] source ... target\n");
1.1 deraadt 1572: exit(1);
1573: }
1574:
1575: void
1.18 markus 1576: run_err(const char *fmt,...)
1.1 deraadt 1577: {
1578: static FILE *fp;
1579: va_list ap;
1580:
1581: ++errs;
1.136 biorn 1582: if (fp != NULL || (remout != -1 && (fp = fdopen(remout, "w")))) {
1583: (void) fprintf(fp, "%c", 0x01);
1584: (void) fprintf(fp, "scp: ");
1585: va_start(ap, fmt);
1586: (void) vfprintf(fp, fmt, ap);
1587: va_end(ap);
1588: (void) fprintf(fp, "\n");
1589: (void) fflush(fp);
1590: }
1.18 markus 1591:
1592: if (!iamremote) {
1.73 markus 1593: va_start(ap, fmt);
1.186 schwarze 1594: vfmprintf(stderr, fmt, ap);
1.73 markus 1595: va_end(ap);
1.18 markus 1596: fprintf(stderr, "\n");
1597: }
1.1 deraadt 1598: }
1599:
1600: void
1.104 djm 1601: verifydir(char *cp)
1.1 deraadt 1602: {
1603: struct stat stb;
1604:
1605: if (!stat(cp, &stb)) {
1606: if (S_ISDIR(stb.st_mode))
1607: return;
1608: errno = ENOTDIR;
1609: }
1610: run_err("%s: %s", cp, strerror(errno));
1.123 avsm 1611: killchild(0);
1.1 deraadt 1612: }
1613:
1614: int
1.104 djm 1615: okname(char *cp0)
1.1 deraadt 1616: {
1617: int c;
1618: char *cp;
1619:
1620: cp = cp0;
1621: do {
1.75 deraadt 1622: c = (int)*cp;
1.1 deraadt 1623: if (c & 0200)
1624: goto bad;
1.179 deraadt 1625: if (!isalpha(c) && !isdigit((unsigned char)c)) {
1.101 markus 1626: switch (c) {
1627: case '\'':
1628: case '"':
1629: case '`':
1630: case ' ':
1631: case '#':
1632: goto bad;
1633: default:
1634: break;
1635: }
1636: }
1.1 deraadt 1637: } while (*++cp);
1638: return (1);
1639:
1.186 schwarze 1640: bad: fmprintf(stderr, "%s: invalid user name\n", cp0);
1.1 deraadt 1641: return (0);
1642: }
1643:
1644: BUF *
1.104 djm 1645: allocbuf(BUF *bp, int fd, int blksize)
1.1 deraadt 1646: {
1647: size_t size;
1648: struct stat stb;
1649:
1.205 deraadt 1650: if (fstat(fd, &stb) == -1) {
1.1 deraadt 1651: run_err("fstat: %s", strerror(errno));
1652: return (0);
1653: }
1.187 deraadt 1654: size = ROUNDUP(stb.st_blksize, blksize);
1.95 markus 1655: if (size == 0)
1.18 markus 1656: size = blksize;
1.1 deraadt 1657: if (bp->cnt >= size)
1658: return (bp);
1.192 deraadt 1659: bp->buf = xrecallocarray(bp->buf, bp->cnt, size, 1);
1.1 deraadt 1660: bp->cnt = size;
1661: return (bp);
1662: }
1663:
1664: void
1.104 djm 1665: lostconn(int signo)
1.1 deraadt 1666: {
1667: if (!iamremote)
1.172 dtucker 1668: (void)write(STDERR_FILENO, "lost connection\n", 16);
1.74 markus 1669: if (signo)
1670: _exit(1);
1671: else
1672: exit(1);
1.4 aaron 1673: }
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