Annotation of src/usr.bin/ssh/scp.c, Revision 1.208
1.208 ! markus 1: /* $OpenBSD: scp.c,v 1.207 2020/01/23 07:10:22 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: }
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 *);
356: void run_err(const char *,...);
357: void verifydir(char *);
1.1 deraadt 358:
359: struct passwd *pwd;
1.18 markus 360: uid_t userid;
1.1 deraadt 361: int errs, remin, remout;
1.202 djm 362: int Tflag, pflag, iamremote, iamrecursive, targetshouldbedirectory;
1.1 deraadt 363:
364: #define CMDNEEDS 64
365: char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */
366:
1.18 markus 367: int response(void);
368: void rsource(char *, struct stat *);
1.202 djm 369: void sink(int, char *[], const char *);
1.18 markus 370: void source(int, char *[]);
371: void tolocal(int, char *[]);
1.193 millert 372: void toremote(int, char *[]);
1.18 markus 373: void usage(void);
1.1 deraadt 374:
375: int
1.104 djm 376: main(int argc, char **argv)
1.1 deraadt 377: {
1.145 djm 378: int ch, fflag, tflag, status, n;
1.193 millert 379: char **newargv;
1.167 djm 380: const char *errstr;
1.1 deraadt 381: extern char *optarg;
382: extern int optind;
1.126 djm 383:
384: /* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */
385: sanitise_stdfd();
1.145 djm 386:
1.186 schwarze 387: setlocale(LC_CTYPE, "");
388:
1.145 djm 389: /* Copy argv, because we modify it */
1.187 deraadt 390: newargv = xcalloc(MAXIMUM(argc + 1, 1), sizeof(*newargv));
1.145 djm 391: for (n = 0; n < argc; n++)
392: newargv[n] = xstrdup(argv[n]);
393: argv = newargv;
1.1 deraadt 394:
1.129 djm 395: memset(&args, '\0', sizeof(args));
1.168 djm 396: memset(&remote_remote_args, '\0', sizeof(remote_remote_args));
397: args.list = remote_remote_args.list = NULL;
1.129 djm 398: addargs(&args, "%s", ssh_program);
1.70 mouring 399: addargs(&args, "-x");
1.168 djm 400: addargs(&args, "-oForwardAgent=no");
401: addargs(&args, "-oPermitLocalCommand=no");
402: addargs(&args, "-oClearAllForwardings=yes");
1.195 djm 403: addargs(&args, "-oRemoteCommand=none");
404: addargs(&args, "-oRequestTTY=no");
1.41 markus 405:
1.202 djm 406: fflag = Tflag = tflag = 0;
407: while ((ch = getopt(argc, argv,
408: "dfl:prtTvBCc:i:P:q12346S:o:F:J:")) != -1) {
1.18 markus 409: switch (ch) {
410: /* User-visible flags. */
1.100 markus 411: case '1':
1.190 djm 412: fatal("SSH protocol v.1 is no longer supported");
413: break;
1.100 markus 414: case '2':
1.190 djm 415: /* Ignored */
416: break;
1.23 markus 417: case '4':
1.41 markus 418: case '6':
419: case 'C':
1.70 mouring 420: addargs(&args, "-%c", ch);
1.168 djm 421: addargs(&remote_remote_args, "-%c", ch);
1.41 markus 422: break;
1.169 markus 423: case '3':
424: throughlocal = 1;
425: break;
1.41 markus 426: case 'o':
427: case 'c':
428: case 'i':
1.83 stevesk 429: case 'F':
1.199 tb 430: case 'J':
1.168 djm 431: addargs(&remote_remote_args, "-%c", ch);
432: addargs(&remote_remote_args, "%s", optarg);
1.165 guenther 433: addargs(&args, "-%c", ch);
434: addargs(&args, "%s", optarg);
1.23 markus 435: break;
1.41 markus 436: case 'P':
1.193 millert 437: sshport = a2port(optarg);
438: if (sshport <= 0)
439: fatal("bad port \"%s\"\n", optarg);
1.41 markus 440: break;
441: case 'B':
1.168 djm 442: addargs(&remote_remote_args, "-oBatchmode=yes");
443: addargs(&args, "-oBatchmode=yes");
1.23 markus 444: break;
1.99 markus 445: case 'l':
1.167 djm 446: limit_kbps = strtonum(optarg, 1, 100 * 1024 * 1024,
447: &errstr);
448: if (errstr != NULL)
1.99 markus 449: usage();
1.167 djm 450: limit_kbps *= 1024; /* kbps */
451: bandwidth_limit_init(&bwlimit, limit_kbps, COPY_BUFLEN);
1.99 markus 452: break;
1.1 deraadt 453: case 'p':
454: pflag = 1;
455: break;
456: case 'r':
457: iamrecursive = 1;
458: break;
1.34 deraadt 459: case 'S':
1.41 markus 460: ssh_program = xstrdup(optarg);
461: break;
462: case 'v':
1.72 markus 463: addargs(&args, "-v");
1.168 djm 464: addargs(&remote_remote_args, "-v");
1.41 markus 465: verbose_mode = 1;
466: break;
467: case 'q':
1.111 dtucker 468: addargs(&args, "-q");
1.168 djm 469: addargs(&remote_remote_args, "-q");
1.41 markus 470: showprogress = 0;
1.34 deraadt 471: break;
472:
1.18 markus 473: /* Server options. */
1.1 deraadt 474: case 'd':
475: targetshouldbedirectory = 1;
476: break;
1.18 markus 477: case 'f': /* "from" */
1.1 deraadt 478: iamremote = 1;
479: fflag = 1;
480: break;
1.18 markus 481: case 't': /* "to" */
1.1 deraadt 482: iamremote = 1;
483: tflag = 1;
484: break;
1.202 djm 485: case 'T':
486: Tflag = 1;
487: break;
1.1 deraadt 488: default:
489: usage();
490: }
1.202 djm 491: }
1.1 deraadt 492: argc -= optind;
493: argv += optind;
494:
495: if ((pwd = getpwuid(userid = getuid())) == NULL)
1.108 deraadt 496: fatal("unknown user %u", (u_int) userid);
1.1 deraadt 497:
1.156 djm 498: if (!isatty(STDOUT_FILENO))
1.7 deraadt 499: showprogress = 0;
1.184 deraadt 500:
501: if (pflag) {
502: /* Cannot pledge: -p allows setuid/setgid files... */
503: } else {
504: if (pledge("stdio rpath wpath cpath fattr tty proc exec",
505: NULL) == -1) {
506: perror("pledge");
507: exit(1);
508: }
509: }
1.7 deraadt 510:
1.1 deraadt 511: remin = STDIN_FILENO;
512: remout = STDOUT_FILENO;
513:
1.52 stevesk 514: if (fflag) {
1.18 markus 515: /* Follow "protocol", send data. */
516: (void) response();
1.1 deraadt 517: source(argc, argv);
518: exit(errs != 0);
519: }
1.18 markus 520: if (tflag) {
521: /* Receive data. */
1.202 djm 522: sink(argc, argv, NULL);
1.1 deraadt 523: exit(errs != 0);
524: }
525: if (argc < 2)
526: usage();
527: if (argc > 2)
528: targetshouldbedirectory = 1;
529:
530: remin = remout = -1;
1.92 markus 531: do_cmd_pid = -1;
1.1 deraadt 532: /* Command to be executed on remote system using "ssh". */
1.55 deraadt 533: (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s",
534: verbose_mode ? " -v" : "",
1.35 deraadt 535: iamrecursive ? " -r" : "", pflag ? " -p" : "",
536: targetshouldbedirectory ? " -d" : "");
1.1 deraadt 537:
1.207 dtucker 538: (void) ssh_signal(SIGPIPE, lostconn);
1.1 deraadt 539:
1.193 millert 540: if (colon(argv[argc - 1])) /* Dest is remote host. */
541: toremote(argc, argv);
1.1 deraadt 542: else {
543: if (targetshouldbedirectory)
544: verifydir(argv[argc - 1]);
1.130 djm 545: tolocal(argc, argv); /* Dest is local host. */
1.92 markus 546: }
547: /*
548: * Finally check the exit status of the ssh process, if one was forked
1.164 stevesk 549: * and no error has occurred yet
1.92 markus 550: */
551: if (do_cmd_pid != -1 && errs == 0) {
552: if (remin != -1)
553: (void) close(remin);
554: if (remout != -1)
555: (void) close(remout);
556: if (waitpid(do_cmd_pid, &status, 0) == -1)
557: errs = 1;
558: else {
559: if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
560: errs = 1;
561: }
1.1 deraadt 562: }
563: exit(errs != 0);
564: }
565:
1.167 djm 566: /* Callback from atomicio6 to update progress meter and limit bandwidth */
567: static int
568: scpio(void *_cnt, size_t s)
1.161 djm 569: {
1.167 djm 570: off_t *cnt = (off_t *)_cnt;
571:
572: *cnt += s;
1.201 dtucker 573: refresh_progress_meter(0);
1.167 djm 574: if (limit_kbps > 0)
575: bandwidth_limit(&bwlimit, s);
576: return 0;
1.161 djm 577: }
578:
1.176 guenther 579: static int
580: do_times(int fd, int verb, const struct stat *sb)
581: {
582: /* strlen(2^64) == 20; strlen(10^6) == 7 */
583: char buf[(20 + 7 + 2) * 2 + 2];
584:
585: (void)snprintf(buf, sizeof(buf), "T%llu 0 %llu 0\n",
586: (unsigned long long) (sb->st_mtime < 0 ? 0 : sb->st_mtime),
587: (unsigned long long) (sb->st_atime < 0 ? 0 : sb->st_atime));
588: if (verb) {
589: fprintf(stderr, "File mtime %lld atime %lld\n",
590: (long long)sb->st_mtime, (long long)sb->st_atime);
591: fprintf(stderr, "Sending file timestamps: %s", buf);
592: }
593: (void) atomicio(vwrite, fd, buf, strlen(buf));
594: return (response());
595: }
596:
1.194 millert 597: static int
598: parse_scp_uri(const char *uri, char **userp, char **hostp, int *portp,
599: char **pathp)
600: {
601: int r;
602:
603: r = parse_uri("scp", uri, userp, hostp, portp, pathp);
604: if (r == 0 && *pathp == NULL)
605: *pathp = xstrdup(".");
606: return r;
607: }
608:
1.204 djm 609: /* Appends a string to an array; returns 0 on success, -1 on alloc failure */
610: static int
611: append(char *cp, char ***ap, size_t *np)
612: {
613: char **tmp;
614:
615: if ((tmp = reallocarray(*ap, *np + 1, sizeof(*tmp))) == NULL)
616: return -1;
617: tmp[(*np)] = cp;
618: (*np)++;
619: *ap = tmp;
620: return 0;
621: }
622:
623: /*
624: * Finds the start and end of the first brace pair in the pattern.
625: * returns 0 on success or -1 for invalid patterns.
626: */
627: static int
628: find_brace(const char *pattern, int *startp, int *endp)
629: {
630: int i;
631: int in_bracket, brace_level;
632:
633: *startp = *endp = -1;
634: in_bracket = brace_level = 0;
635: for (i = 0; i < INT_MAX && *endp < 0 && pattern[i] != '\0'; i++) {
636: switch (pattern[i]) {
637: case '\\':
638: /* skip next character */
639: if (pattern[i + 1] != '\0')
640: i++;
641: break;
642: case '[':
643: in_bracket = 1;
644: break;
645: case ']':
646: in_bracket = 0;
647: break;
648: case '{':
649: if (in_bracket)
650: break;
651: if (pattern[i + 1] == '}') {
652: /* Protect a single {}, for find(1), like csh */
653: i++; /* skip */
654: break;
655: }
656: if (*startp == -1)
657: *startp = i;
658: brace_level++;
659: break;
660: case '}':
661: if (in_bracket)
662: break;
663: if (*startp < 0) {
664: /* Unbalanced brace */
665: return -1;
666: }
667: if (--brace_level <= 0)
668: *endp = i;
669: break;
670: }
671: }
672: /* unbalanced brackets/braces */
673: if (*endp < 0 && (*startp >= 0 || in_bracket))
674: return -1;
675: return 0;
676: }
677:
678: /*
679: * Assembles and records a successfully-expanded pattern, returns -1 on
680: * alloc failure.
681: */
682: static int
683: emit_expansion(const char *pattern, int brace_start, int brace_end,
684: int sel_start, int sel_end, char ***patternsp, size_t *npatternsp)
685: {
686: char *cp;
687: int o = 0, tail_len = strlen(pattern + brace_end + 1);
688:
689: if ((cp = malloc(brace_start + (sel_end - sel_start) +
690: tail_len + 1)) == NULL)
691: return -1;
692:
693: /* Pattern before initial brace */
694: if (brace_start > 0) {
695: memcpy(cp, pattern, brace_start);
696: o = brace_start;
697: }
698: /* Current braced selection */
699: if (sel_end - sel_start > 0) {
700: memcpy(cp + o, pattern + sel_start,
701: sel_end - sel_start);
702: o += sel_end - sel_start;
703: }
704: /* Remainder of pattern after closing brace */
705: if (tail_len > 0) {
706: memcpy(cp + o, pattern + brace_end + 1, tail_len);
707: o += tail_len;
708: }
709: cp[o] = '\0';
710: if (append(cp, patternsp, npatternsp) != 0) {
711: free(cp);
712: return -1;
713: }
714: return 0;
715: }
716:
717: /*
718: * Expand the first encountered brace in pattern, appending the expanded
719: * patterns it yielded to the *patternsp array.
720: *
721: * Returns 0 on success or -1 on allocation failure.
722: *
723: * Signals whether expansion was performed via *expanded and whether
724: * pattern was invalid via *invalid.
725: */
726: static int
727: brace_expand_one(const char *pattern, char ***patternsp, size_t *npatternsp,
728: int *expanded, int *invalid)
729: {
730: int i;
731: int in_bracket, brace_start, brace_end, brace_level;
732: int sel_start, sel_end;
733:
734: *invalid = *expanded = 0;
735:
736: if (find_brace(pattern, &brace_start, &brace_end) != 0) {
737: *invalid = 1;
738: return 0;
739: } else if (brace_start == -1)
740: return 0;
741:
742: in_bracket = brace_level = 0;
743: for (i = sel_start = brace_start + 1; i < brace_end; i++) {
744: switch (pattern[i]) {
745: case '{':
746: if (in_bracket)
747: break;
748: brace_level++;
749: break;
750: case '}':
751: if (in_bracket)
752: break;
753: brace_level--;
754: break;
755: case '[':
756: in_bracket = 1;
757: break;
758: case ']':
759: in_bracket = 0;
760: break;
761: case '\\':
762: if (i < brace_end - 1)
763: i++; /* skip */
764: break;
765: }
766: if (pattern[i] == ',' || i == brace_end - 1) {
767: if (in_bracket || brace_level > 0)
768: continue;
769: /* End of a selection, emit an expanded pattern */
770:
771: /* Adjust end index for last selection */
772: sel_end = (i == brace_end - 1) ? brace_end : i;
773: if (emit_expansion(pattern, brace_start, brace_end,
774: sel_start, sel_end, patternsp, npatternsp) != 0)
775: return -1;
776: /* move on to the next selection */
777: sel_start = i + 1;
778: continue;
779: }
780: }
781: if (in_bracket || brace_level > 0) {
782: *invalid = 1;
783: return 0;
784: }
785: /* success */
786: *expanded = 1;
787: return 0;
788: }
789:
790: /* Expand braces from pattern. Returns 0 on success, -1 on failure */
791: static int
792: brace_expand(const char *pattern, char ***patternsp, size_t *npatternsp)
793: {
794: char *cp, *cp2, **active = NULL, **done = NULL;
795: size_t i, nactive = 0, ndone = 0;
796: int ret = -1, invalid = 0, expanded = 0;
797:
798: *patternsp = NULL;
799: *npatternsp = 0;
800:
801: /* Start the worklist with the original pattern */
802: if ((cp = strdup(pattern)) == NULL)
803: return -1;
804: if (append(cp, &active, &nactive) != 0) {
805: free(cp);
806: return -1;
807: }
808: while (nactive > 0) {
809: cp = active[nactive - 1];
810: nactive--;
811: if (brace_expand_one(cp, &active, &nactive,
812: &expanded, &invalid) == -1) {
813: free(cp);
814: goto fail;
815: }
816: if (invalid)
817: fatal("%s: invalid brace pattern \"%s\"", __func__, cp);
818: if (expanded) {
819: /*
820: * Current entry expanded to new entries on the
821: * active list; discard the progenitor pattern.
822: */
823: free(cp);
824: continue;
825: }
826: /*
827: * Pattern did not expand; append the finename component to
828: * the completed list
829: */
830: if ((cp2 = strrchr(cp, '/')) != NULL)
831: *cp2++ = '\0';
832: else
833: cp2 = cp;
834: if (append(xstrdup(cp2), &done, &ndone) != 0) {
835: free(cp);
836: goto fail;
837: }
838: free(cp);
839: }
840: /* success */
841: *patternsp = done;
842: *npatternsp = ndone;
843: done = NULL;
844: ndone = 0;
845: ret = 0;
846: fail:
847: for (i = 0; i < nactive; i++)
848: free(active[i]);
849: free(active);
850: for (i = 0; i < ndone; i++)
851: free(done[i]);
852: free(done);
853: return ret;
854: }
855:
1.1 deraadt 856: void
1.193 millert 857: toremote(int argc, char **argv)
1.1 deraadt 858: {
1.193 millert 859: char *suser = NULL, *host = NULL, *src = NULL;
860: char *bp, *tuser, *thost, *targ;
861: int sport = -1, tport = -1;
1.129 djm 862: arglist alist;
1.193 millert 863: int i, r;
1.168 djm 864: u_int j;
1.129 djm 865:
866: memset(&alist, '\0', sizeof(alist));
867: alist.list = NULL;
1.1 deraadt 868:
1.193 millert 869: /* Parse target */
1.194 millert 870: r = parse_scp_uri(argv[argc - 1], &tuser, &thost, &tport, &targ);
871: if (r == -1) {
872: fmprintf(stderr, "%s: invalid uri\n", argv[argc - 1]);
873: ++errs;
874: goto out;
875: }
1.193 millert 876: if (r != 0) {
877: if (parse_user_host_path(argv[argc - 1], &tuser, &thost,
1.194 millert 878: &targ) == -1) {
879: fmprintf(stderr, "%s: invalid target\n", argv[argc - 1]);
880: ++errs;
1.193 millert 881: goto out;
1.194 millert 882: }
1.129 djm 883: }
1.194 millert 884: if (tuser != NULL && !okname(tuser)) {
885: ++errs;
1.193 millert 886: goto out;
1.194 millert 887: }
1.129 djm 888:
1.193 millert 889: /* Parse source files */
1.1 deraadt 890: for (i = 0; i < argc - 1; i++) {
1.193 millert 891: free(suser);
892: free(host);
893: free(src);
1.194 millert 894: r = parse_scp_uri(argv[i], &suser, &host, &sport, &src);
895: if (r == -1) {
896: fmprintf(stderr, "%s: invalid uri\n", argv[i]);
897: ++errs;
898: continue;
899: }
900: if (r != 0) {
1.193 millert 901: parse_user_host_path(argv[i], &suser, &host, &src);
1.194 millert 902: }
1.193 millert 903: if (suser != NULL && !okname(suser)) {
904: ++errs;
905: continue;
906: }
907: if (host && throughlocal) { /* extended remote to remote */
1.171 djm 908: xasprintf(&bp, "%s -f %s%s", cmd,
909: *src == '-' ? "-- " : "", src);
1.193 millert 910: if (do_cmd(host, suser, sport, bp, &remin, &remout) < 0)
1.169 markus 911: exit(1);
1.173 djm 912: free(bp);
1.171 djm 913: xasprintf(&bp, "%s -t %s%s", cmd,
914: *targ == '-' ? "-- " : "", targ);
1.193 millert 915: if (do_cmd2(thost, tuser, tport, bp, remin, remout) < 0)
1.169 markus 916: exit(1);
1.173 djm 917: free(bp);
1.169 markus 918: (void) close(remin);
919: (void) close(remout);
920: remin = remout = -1;
1.193 millert 921: } else if (host) { /* standard remote to remote */
922: if (tport != -1 && tport != SSH_DEFAULT_PORT) {
923: /* This would require the remote support URIs */
924: fatal("target port not supported with two "
925: "remote hosts without the -3 option");
926: }
927:
1.129 djm 928: freeargs(&alist);
929: addargs(&alist, "%s", ssh_program);
930: addargs(&alist, "-x");
1.168 djm 931: addargs(&alist, "-oClearAllForwardings=yes");
1.129 djm 932: addargs(&alist, "-n");
1.168 djm 933: for (j = 0; j < remote_remote_args.num; j++) {
934: addargs(&alist, "%s",
935: remote_remote_args.list[j]);
936: }
1.193 millert 937:
938: if (sport != -1) {
939: addargs(&alist, "-p");
940: addargs(&alist, "%d", sport);
941: }
942: if (suser) {
1.129 djm 943: addargs(&alist, "-l");
944: addargs(&alist, "%s", suser);
1.23 markus 945: }
1.165 guenther 946: addargs(&alist, "--");
1.129 djm 947: addargs(&alist, "%s", host);
948: addargs(&alist, "%s", cmd);
949: addargs(&alist, "%s", src);
950: addargs(&alist, "%s%s%s:%s",
951: tuser ? tuser : "", tuser ? "@" : "",
952: thost, targ);
953: if (do_local_cmd(&alist) != 0)
1.109 markus 954: errs = 1;
1.18 markus 955: } else { /* local to remote */
1.1 deraadt 956: if (remin == -1) {
1.171 djm 957: xasprintf(&bp, "%s -t %s%s", cmd,
958: *targ == '-' ? "-- " : "", targ);
1.193 millert 959: if (do_cmd(thost, tuser, tport, bp, &remin,
1.140 deraadt 960: &remout) < 0)
1.18 markus 961: exit(1);
1.1 deraadt 962: if (response() < 0)
963: exit(1);
1.173 djm 964: free(bp);
1.1 deraadt 965: }
1.18 markus 966: source(1, argv + i);
1.1 deraadt 967: }
968: }
1.193 millert 969: out:
970: free(tuser);
971: free(thost);
972: free(targ);
973: free(suser);
974: free(host);
975: free(src);
1.1 deraadt 976: }
977:
978: void
1.104 djm 979: tolocal(int argc, char **argv)
1.1 deraadt 980: {
1.193 millert 981: char *bp, *host = NULL, *src = NULL, *suser = NULL;
1.129 djm 982: arglist alist;
1.193 millert 983: int i, r, sport = -1;
1.129 djm 984:
985: memset(&alist, '\0', sizeof(alist));
986: alist.list = NULL;
1.1 deraadt 987:
988: for (i = 0; i < argc - 1; i++) {
1.193 millert 989: free(suser);
990: free(host);
991: free(src);
1.194 millert 992: r = parse_scp_uri(argv[i], &suser, &host, &sport, &src);
1.193 millert 993: if (r == -1) {
1.194 millert 994: fmprintf(stderr, "%s: invalid uri\n", argv[i]);
1.193 millert 995: ++errs;
996: continue;
997: }
998: if (r != 0)
999: parse_user_host_path(argv[i], &suser, &host, &src);
1000: if (suser != NULL && !okname(suser)) {
1001: ++errs;
1002: continue;
1003: }
1004: if (!host) { /* Local to local. */
1.129 djm 1005: freeargs(&alist);
1006: addargs(&alist, "%s", _PATH_CP);
1007: if (iamrecursive)
1008: addargs(&alist, "-r");
1009: if (pflag)
1010: addargs(&alist, "-p");
1.165 guenther 1011: addargs(&alist, "--");
1.129 djm 1012: addargs(&alist, "%s", argv[i]);
1013: addargs(&alist, "%s", argv[argc-1]);
1014: if (do_local_cmd(&alist))
1.1 deraadt 1015: ++errs;
1016: continue;
1017: }
1.193 millert 1018: /* Remote to local. */
1.171 djm 1019: xasprintf(&bp, "%s -f %s%s",
1020: cmd, *src == '-' ? "-- " : "", src);
1.193 millert 1021: if (do_cmd(host, suser, sport, bp, &remin, &remout) < 0) {
1.173 djm 1022: free(bp);
1.18 markus 1023: ++errs;
1024: continue;
1.1 deraadt 1025: }
1.173 djm 1026: free(bp);
1.202 djm 1027: sink(1, argv + argc - 1, src);
1.18 markus 1028: (void) close(remin);
1.1 deraadt 1029: remin = remout = -1;
1030: }
1.193 millert 1031: free(suser);
1032: free(host);
1033: free(src);
1.1 deraadt 1034: }
1035:
1036: void
1.104 djm 1037: source(int argc, char **argv)
1.1 deraadt 1038: {
1039: struct stat stb;
1040: static BUF buffer;
1041: BUF *bp;
1.163 dtucker 1042: off_t i, statbytes;
1.180 djm 1043: size_t amt, nr;
1.125 dtucker 1044: int fd = -1, haderr, indx;
1.206 dtucker 1045: char *last, *name, buf[PATH_MAX + 128], encname[PATH_MAX];
1.65 deraadt 1046: int len;
1.1 deraadt 1047:
1048: for (indx = 0; indx < argc; ++indx) {
1.18 markus 1049: name = argv[indx];
1.11 aaron 1050: statbytes = 0;
1.65 deraadt 1051: len = strlen(name);
1052: while (len > 1 && name[len-1] == '/')
1053: name[--len] = '\0';
1.205 deraadt 1054: if ((fd = open(name, O_RDONLY|O_NONBLOCK, 0)) == -1)
1.158 dtucker 1055: goto syserr;
1.85 markus 1056: if (strchr(name, '\n') != NULL) {
1.158 dtucker 1057: strnvis(encname, name, sizeof(encname), VIS_NL);
1058: name = encname;
1.85 markus 1059: }
1.205 deraadt 1060: if (fstat(fd, &stb) == -1) {
1.1 deraadt 1061: syserr: run_err("%s: %s", name, strerror(errno));
1062: goto next;
1063: }
1.163 dtucker 1064: if (stb.st_size < 0) {
1065: run_err("%s: %s", name, "Negative file size");
1066: goto next;
1067: }
1.157 djm 1068: unset_nonblock(fd);
1.1 deraadt 1069: switch (stb.st_mode & S_IFMT) {
1070: case S_IFREG:
1071: break;
1072: case S_IFDIR:
1073: if (iamrecursive) {
1074: rsource(name, &stb);
1075: goto next;
1076: }
1077: /* FALLTHROUGH */
1078: default:
1079: run_err("%s: not a regular file", name);
1080: goto next;
1081: }
1082: if ((last = strrchr(name, '/')) == NULL)
1083: last = name;
1084: else
1085: ++last;
1.11 aaron 1086: curfile = last;
1.1 deraadt 1087: if (pflag) {
1.176 guenther 1088: if (do_times(remout, verbose_mode, &stb) < 0)
1.1 deraadt 1089: goto next;
1090: }
1091: #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
1.61 markus 1092: snprintf(buf, sizeof buf, "C%04o %lld %s\n",
1.47 markus 1093: (u_int) (stb.st_mode & FILEMODEMASK),
1.62 markus 1094: (long long)stb.st_size, last);
1.186 schwarze 1095: if (verbose_mode)
1096: fmprintf(stderr, "Sending file modes: %s", buf);
1.107 deraadt 1097: (void) atomicio(vwrite, remout, buf, strlen(buf));
1.1 deraadt 1098: if (response() < 0)
1099: goto next;
1.161 djm 1100: if ((bp = allocbuf(&buffer, fd, COPY_BUFLEN)) == NULL) {
1.127 deraadt 1101: next: if (fd != -1) {
1102: (void) close(fd);
1103: fd = -1;
1104: }
1.1 deraadt 1105: continue;
1106: }
1.97 fgsch 1107: if (showprogress)
1108: start_progress_meter(curfile, stb.st_size, &statbytes);
1.161 djm 1109: set_nonblock(remout);
1.1 deraadt 1110: for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
1111: amt = bp->cnt;
1.163 dtucker 1112: if (i + (off_t)amt > stb.st_size)
1.1 deraadt 1113: amt = stb.st_size - i;
1114: if (!haderr) {
1.180 djm 1115: if ((nr = atomicio(read, fd,
1116: bp->buf, amt)) != amt) {
1.122 avsm 1117: haderr = errno;
1.180 djm 1118: memset(bp->buf + nr, 0, amt - nr);
1119: }
1.1 deraadt 1120: }
1.161 djm 1121: /* Keep writing after error to retain sync */
1122: if (haderr) {
1123: (void)atomicio(vwrite, remout, bp->buf, amt);
1.180 djm 1124: memset(bp->buf, 0, amt);
1.161 djm 1125: continue;
1.1 deraadt 1126: }
1.167 djm 1127: if (atomicio6(vwrite, remout, bp->buf, amt, scpio,
1.161 djm 1128: &statbytes) != amt)
1129: haderr = errno;
1.1 deraadt 1130: }
1.161 djm 1131: unset_nonblock(remout);
1.4 aaron 1132:
1.127 deraadt 1133: if (fd != -1) {
1.205 deraadt 1134: if (close(fd) == -1 && !haderr)
1.127 deraadt 1135: haderr = errno;
1136: fd = -1;
1137: }
1.1 deraadt 1138: if (!haderr)
1.107 deraadt 1139: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 1140: else
1141: run_err("%s: %s", name, strerror(haderr));
1.18 markus 1142: (void) response();
1.185 dtucker 1143: if (showprogress)
1144: stop_progress_meter();
1.1 deraadt 1145: }
1146: }
1147:
1148: void
1.104 djm 1149: rsource(char *name, struct stat *statp)
1.1 deraadt 1150: {
1151: DIR *dirp;
1152: struct dirent *dp;
1.181 deraadt 1153: char *last, *vect[1], path[PATH_MAX];
1.1 deraadt 1154:
1155: if (!(dirp = opendir(name))) {
1156: run_err("%s: %s", name, strerror(errno));
1157: return;
1158: }
1159: last = strrchr(name, '/');
1.183 mmcc 1160: if (last == NULL)
1.1 deraadt 1161: last = name;
1162: else
1163: last++;
1164: if (pflag) {
1.176 guenther 1165: if (do_times(remout, verbose_mode, statp) < 0) {
1.1 deraadt 1166: closedir(dirp);
1167: return;
1168: }
1169: }
1.55 deraadt 1170: (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n",
1.47 markus 1171: (u_int) (statp->st_mode & FILEMODEMASK), 0, last);
1.18 markus 1172: if (verbose_mode)
1.186 schwarze 1173: fmprintf(stderr, "Entering directory: %s", path);
1.107 deraadt 1174: (void) atomicio(vwrite, remout, path, strlen(path));
1.1 deraadt 1175: if (response() < 0) {
1176: closedir(dirp);
1177: return;
1178: }
1.63 stevesk 1179: while ((dp = readdir(dirp)) != NULL) {
1.1 deraadt 1180: if (dp->d_ino == 0)
1181: continue;
1182: if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
1183: continue;
1184: if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) {
1185: run_err("%s/%s: name too long", name, dp->d_name);
1186: continue;
1187: }
1.55 deraadt 1188: (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name);
1.1 deraadt 1189: vect[0] = path;
1190: source(1, vect);
1191: }
1.18 markus 1192: (void) closedir(dirp);
1.107 deraadt 1193: (void) atomicio(vwrite, remout, "E\n", 2);
1.18 markus 1194: (void) response();
1.1 deraadt 1195: }
1196:
1.189 millert 1197: #define TYPE_OVERFLOW(type, val) \
1198: ((sizeof(type) == 4 && (val) > INT32_MAX) || \
1199: (sizeof(type) == 8 && (val) > INT64_MAX) || \
1200: (sizeof(type) != 4 && sizeof(type) != 8))
1201:
1.1 deraadt 1202: void
1.202 djm 1203: sink(int argc, char **argv, const char *src)
1.1 deraadt 1204: {
1205: static BUF buffer;
1206: struct stat stb;
1.18 markus 1207: enum {
1208: YES, NO, DISPLAYED
1209: } wrerr;
1.1 deraadt 1210: BUF *bp;
1.122 avsm 1211: off_t i;
1.124 djm 1212: size_t j, count;
1.140 deraadt 1213: int amt, exists, first, ofd;
1214: mode_t mode, omode, mask;
1.97 fgsch 1215: off_t size, statbytes;
1.176 guenther 1216: unsigned long long ull;
1.36 deraadt 1217: int setimes, targisdir, wrerrno = 0;
1.186 schwarze 1218: char ch, *cp, *np, *targ, *why, *vect[1], buf[2048], visbuf[2048];
1.204 djm 1219: char **patterns = NULL;
1220: size_t n, npatterns = 0;
1.40 markus 1221: struct timeval tv[2];
1.1 deraadt 1222:
1.66 stevesk 1223: #define atime tv[0]
1224: #define mtime tv[1]
1.118 deraadt 1225: #define SCREWUP(str) { why = str; goto screwup; }
1.1 deraadt 1226:
1.189 millert 1227: if (TYPE_OVERFLOW(time_t, 0) || TYPE_OVERFLOW(off_t, 0))
1228: SCREWUP("Unexpected off_t/time_t size");
1229:
1.1 deraadt 1230: setimes = targisdir = 0;
1231: mask = umask(0);
1232: if (!pflag)
1.18 markus 1233: (void) umask(mask);
1.1 deraadt 1234: if (argc != 1) {
1235: run_err("ambiguous target");
1236: exit(1);
1237: }
1238: targ = *argv;
1239: if (targetshouldbedirectory)
1240: verifydir(targ);
1.18 markus 1241:
1.107 deraadt 1242: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 1243: if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
1244: targisdir = 1;
1.202 djm 1245: if (src != NULL && !iamrecursive && !Tflag) {
1246: /*
1247: * Prepare to try to restrict incoming filenames to match
1248: * the requested destination file glob.
1249: */
1.204 djm 1250: if (brace_expand(src, &patterns, &npatterns) != 0)
1251: fatal("%s: could not expand pattern", __func__);
1.202 djm 1252: }
1.1 deraadt 1253: for (first = 1;; first = 0) {
1254: cp = buf;
1.122 avsm 1255: if (atomicio(read, remin, cp, 1) != 1)
1.204 djm 1256: goto done;
1.1 deraadt 1257: if (*cp++ == '\n')
1258: SCREWUP("unexpected <newline>");
1259: do {
1.30 deraadt 1260: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 1261: SCREWUP("lost connection");
1262: *cp++ = ch;
1263: } while (cp < &buf[sizeof(buf) - 1] && ch != '\n');
1264: *cp = 0;
1.114 markus 1265: if (verbose_mode)
1.186 schwarze 1266: fmprintf(stderr, "Sink: %s", buf);
1.1 deraadt 1267:
1268: if (buf[0] == '\01' || buf[0] == '\02') {
1.186 schwarze 1269: if (iamremote == 0) {
1270: (void) snmprintf(visbuf, sizeof(visbuf),
1271: NULL, "%s", buf + 1);
1.107 deraadt 1272: (void) atomicio(vwrite, STDERR_FILENO,
1.186 schwarze 1273: visbuf, strlen(visbuf));
1274: }
1.1 deraadt 1275: if (buf[0] == '\02')
1276: exit(1);
1277: ++errs;
1278: continue;
1279: }
1280: if (buf[0] == 'E') {
1.107 deraadt 1281: (void) atomicio(vwrite, remout, "", 1);
1.204 djm 1282: goto done;
1.1 deraadt 1283: }
1284: if (ch == '\n')
1285: *--cp = 0;
1286:
1287: cp = buf;
1288: if (*cp == 'T') {
1289: setimes++;
1290: cp++;
1.176 guenther 1291: if (!isdigit((unsigned char)*cp))
1292: SCREWUP("mtime.sec not present");
1293: ull = strtoull(cp, &cp, 10);
1.66 stevesk 1294: if (!cp || *cp++ != ' ')
1.1 deraadt 1295: SCREWUP("mtime.sec not delimited");
1.189 millert 1296: if (TYPE_OVERFLOW(time_t, ull))
1.176 guenther 1297: setimes = 0; /* out of range */
1298: mtime.tv_sec = ull;
1.66 stevesk 1299: mtime.tv_usec = strtol(cp, &cp, 10);
1.176 guenther 1300: if (!cp || *cp++ != ' ' || mtime.tv_usec < 0 ||
1301: mtime.tv_usec > 999999)
1.1 deraadt 1302: SCREWUP("mtime.usec not delimited");
1.176 guenther 1303: if (!isdigit((unsigned char)*cp))
1304: SCREWUP("atime.sec not present");
1305: ull = strtoull(cp, &cp, 10);
1.66 stevesk 1306: if (!cp || *cp++ != ' ')
1.1 deraadt 1307: SCREWUP("atime.sec not delimited");
1.189 millert 1308: if (TYPE_OVERFLOW(time_t, ull))
1.176 guenther 1309: setimes = 0; /* out of range */
1310: atime.tv_sec = ull;
1.66 stevesk 1311: atime.tv_usec = strtol(cp, &cp, 10);
1.176 guenther 1312: if (!cp || *cp++ != '\0' || atime.tv_usec < 0 ||
1313: atime.tv_usec > 999999)
1.1 deraadt 1314: SCREWUP("atime.usec not delimited");
1.107 deraadt 1315: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 1316: continue;
1317: }
1318: if (*cp != 'C' && *cp != 'D') {
1319: /*
1320: * Check for the case "rcp remote:foo\* local:bar".
1321: * In this case, the line "No match." can be returned
1322: * by the shell before the rcp command on the remote is
1323: * executed so the ^Aerror_message convention isn't
1324: * followed.
1325: */
1326: if (first) {
1327: run_err("%s", cp);
1328: exit(1);
1329: }
1330: SCREWUP("expected control record");
1331: }
1332: mode = 0;
1333: for (++cp; cp < buf + 5; cp++) {
1334: if (*cp < '0' || *cp > '7')
1335: SCREWUP("bad mode");
1336: mode = (mode << 3) | (*cp - '0');
1337: }
1.197 dtucker 1338: if (!pflag)
1339: mode &= ~mask;
1.1 deraadt 1340: if (*cp++ != ' ')
1341: SCREWUP("mode not delimited");
1342:
1.188 millert 1343: if (!isdigit((unsigned char)*cp))
1344: SCREWUP("size not present");
1345: ull = strtoull(cp, &cp, 10);
1346: if (!cp || *cp++ != ' ')
1.1 deraadt 1347: SCREWUP("size not delimited");
1.189 millert 1348: if (TYPE_OVERFLOW(off_t, ull))
1.188 millert 1349: SCREWUP("size out of range");
1350: size = (off_t)ull;
1351:
1.198 djm 1352: if (*cp == '\0' || strchr(cp, '/') != NULL ||
1353: strcmp(cp, ".") == 0 || strcmp(cp, "..") == 0) {
1.114 markus 1354: run_err("error: unexpected filename: %s", cp);
1355: exit(1);
1356: }
1.204 djm 1357: if (npatterns > 0) {
1358: for (n = 0; n < npatterns; n++) {
1359: if (fnmatch(patterns[n], cp, 0) == 0)
1360: break;
1361: }
1362: if (n >= npatterns)
1363: SCREWUP("filename does not match request");
1364: }
1.1 deraadt 1365: if (targisdir) {
1366: static char *namebuf;
1.124 djm 1367: static size_t cursize;
1.1 deraadt 1368: size_t need;
1369:
1370: need = strlen(targ) + strlen(cp) + 250;
1.55 deraadt 1371: if (need > cursize) {
1.173 djm 1372: free(namebuf);
1.18 markus 1373: namebuf = xmalloc(need);
1.55 deraadt 1374: cursize = need;
1375: }
1376: (void) snprintf(namebuf, need, "%s%s%s", targ,
1.88 mouring 1377: strcmp(targ, "/") ? "/" : "", cp);
1.1 deraadt 1378: np = namebuf;
1379: } else
1380: np = targ;
1.12 aaron 1381: curfile = cp;
1.1 deraadt 1382: exists = stat(np, &stb) == 0;
1383: if (buf[0] == 'D') {
1384: int mod_flag = pflag;
1.114 markus 1385: if (!iamrecursive)
1386: SCREWUP("received directory without -r");
1.1 deraadt 1387: if (exists) {
1388: if (!S_ISDIR(stb.st_mode)) {
1389: errno = ENOTDIR;
1390: goto bad;
1391: }
1392: if (pflag)
1.18 markus 1393: (void) chmod(np, mode);
1.1 deraadt 1394: } else {
1.18 markus 1395: /* Handle copying from a read-only
1396: directory */
1.1 deraadt 1397: mod_flag = 1;
1.205 deraadt 1398: if (mkdir(np, mode | S_IRWXU) == -1)
1.1 deraadt 1399: goto bad;
1400: }
1.58 danh 1401: vect[0] = xstrdup(np);
1.202 djm 1402: sink(1, vect, src);
1.1 deraadt 1403: if (setimes) {
1404: setimes = 0;
1.205 deraadt 1405: if (utimes(vect[0], tv) == -1)
1.18 markus 1406: run_err("%s: set times: %s",
1.59 deraadt 1407: vect[0], strerror(errno));
1.1 deraadt 1408: }
1409: if (mod_flag)
1.59 deraadt 1410: (void) chmod(vect[0], mode);
1.173 djm 1411: free(vect[0]);
1.1 deraadt 1412: continue;
1413: }
1414: omode = mode;
1.174 dtucker 1415: mode |= S_IWUSR;
1.205 deraadt 1416: if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) == -1) {
1.1 deraadt 1417: bad: run_err("%s: %s", np, strerror(errno));
1418: continue;
1419: }
1.107 deraadt 1420: (void) atomicio(vwrite, remout, "", 1);
1.161 djm 1421: if ((bp = allocbuf(&buffer, ofd, COPY_BUFLEN)) == NULL) {
1.18 markus 1422: (void) close(ofd);
1.1 deraadt 1423: continue;
1424: }
1425: cp = bp->buf;
1426: wrerr = NO;
1.7 deraadt 1427:
1.12 aaron 1428: statbytes = 0;
1.97 fgsch 1429: if (showprogress)
1430: start_progress_meter(curfile, size, &statbytes);
1.161 djm 1431: set_nonblock(remin);
1432: for (count = i = 0; i < size; i += bp->cnt) {
1433: amt = bp->cnt;
1.1 deraadt 1434: if (i + amt > size)
1435: amt = size - i;
1436: count += amt;
1437: do {
1.167 djm 1438: j = atomicio6(read, remin, cp, amt,
1439: scpio, &statbytes);
1.122 avsm 1440: if (j == 0) {
1.161 djm 1441: run_err("%s", j != EPIPE ?
1442: strerror(errno) :
1.63 stevesk 1443: "dropped connection");
1.1 deraadt 1444: exit(1);
1445: }
1446: amt -= j;
1447: cp += j;
1448: } while (amt > 0);
1.112 djm 1449:
1.1 deraadt 1450: if (count == bp->cnt) {
1451: /* Keep reading so we stay sync'd up. */
1452: if (wrerr == NO) {
1.122 avsm 1453: if (atomicio(vwrite, ofd, bp->buf,
1454: count) != count) {
1.1 deraadt 1455: wrerr = YES;
1.122 avsm 1456: wrerrno = errno;
1.1 deraadt 1457: }
1458: }
1459: count = 0;
1460: cp = bp->buf;
1461: }
1462: }
1.161 djm 1463: unset_nonblock(remin);
1.1 deraadt 1464: if (count != 0 && wrerr == NO &&
1.122 avsm 1465: atomicio(vwrite, ofd, bp->buf, count) != count) {
1.1 deraadt 1466: wrerr = YES;
1.122 avsm 1467: wrerrno = errno;
1.1 deraadt 1468: }
1.159 djm 1469: if (wrerr == NO && (!exists || S_ISREG(stb.st_mode)) &&
1470: ftruncate(ofd, size) != 0) {
1.1 deraadt 1471: run_err("%s: truncate: %s", np, strerror(errno));
1472: wrerr = DISPLAYED;
1473: }
1474: if (pflag) {
1475: if (exists || omode != mode)
1.116 dtucker 1476: if (fchmod(ofd, omode)) {
1.1 deraadt 1477: run_err("%s: set mode: %s",
1.63 stevesk 1478: np, strerror(errno));
1.116 dtucker 1479: wrerr = DISPLAYED;
1480: }
1.1 deraadt 1481: } else {
1482: if (!exists && omode != mode)
1.116 dtucker 1483: if (fchmod(ofd, omode & ~mask)) {
1.1 deraadt 1484: run_err("%s: set mode: %s",
1.63 stevesk 1485: np, strerror(errno));
1.116 dtucker 1486: wrerr = DISPLAYED;
1487: }
1.1 deraadt 1488: }
1.33 provos 1489: if (close(ofd) == -1) {
1490: wrerr = YES;
1491: wrerrno = errno;
1492: }
1.18 markus 1493: (void) response();
1.185 dtucker 1494: if (showprogress)
1495: stop_progress_meter();
1.1 deraadt 1496: if (setimes && wrerr == NO) {
1497: setimes = 0;
1.205 deraadt 1498: if (utimes(np, tv) == -1) {
1.1 deraadt 1499: run_err("%s: set times: %s",
1.63 stevesk 1500: np, strerror(errno));
1.1 deraadt 1501: wrerr = DISPLAYED;
1502: }
1503: }
1.18 markus 1504: switch (wrerr) {
1.1 deraadt 1505: case YES:
1506: run_err("%s: %s", np, strerror(wrerrno));
1507: break;
1508: case NO:
1.107 deraadt 1509: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 1510: break;
1511: case DISPLAYED:
1512: break;
1513: }
1514: }
1.204 djm 1515: done:
1516: for (n = 0; n < npatterns; n++)
1517: free(patterns[n]);
1518: free(patterns);
1519: return;
1.1 deraadt 1520: screwup:
1.204 djm 1521: for (n = 0; n < npatterns; n++)
1522: free(patterns[n]);
1523: free(patterns);
1.1 deraadt 1524: run_err("protocol error: %s", why);
1525: exit(1);
1526: }
1527:
1528: int
1.86 itojun 1529: response(void)
1.1 deraadt 1530: {
1.186 schwarze 1531: char ch, *cp, resp, rbuf[2048], visbuf[2048];
1.1 deraadt 1532:
1.30 deraadt 1533: if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp))
1.1 deraadt 1534: lostconn(0);
1535:
1536: cp = rbuf;
1.18 markus 1537: switch (resp) {
1538: case 0: /* ok */
1.1 deraadt 1539: return (0);
1540: default:
1541: *cp++ = resp;
1542: /* FALLTHROUGH */
1.18 markus 1543: case 1: /* error, followed by error msg */
1544: case 2: /* fatal error, "" */
1.1 deraadt 1545: do {
1.30 deraadt 1546: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 1547: lostconn(0);
1548: *cp++ = ch;
1549: } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n');
1550:
1.186 schwarze 1551: if (!iamremote) {
1552: cp[-1] = '\0';
1553: (void) snmprintf(visbuf, sizeof(visbuf),
1554: NULL, "%s\n", rbuf);
1555: (void) atomicio(vwrite, STDERR_FILENO,
1556: visbuf, strlen(visbuf));
1557: }
1.1 deraadt 1558: ++errs;
1559: if (resp == 1)
1560: return (-1);
1561: exit(1);
1562: }
1563: /* NOTREACHED */
1564: }
1565:
1566: void
1.86 itojun 1567: usage(void)
1.1 deraadt 1568: {
1.83 stevesk 1569: (void) fprintf(stderr,
1.203 jmc 1570: "usage: scp [-346BCpqrTv] [-c cipher] [-F ssh_config] [-i identity_file]\n"
1.199 tb 1571: " [-J destination] [-l limit] [-o ssh_option] [-P port]\n"
1572: " [-S program] source ... target\n");
1.1 deraadt 1573: exit(1);
1574: }
1575:
1576: void
1.18 markus 1577: run_err(const char *fmt,...)
1.1 deraadt 1578: {
1579: static FILE *fp;
1580: va_list ap;
1581:
1582: ++errs;
1.136 biorn 1583: if (fp != NULL || (remout != -1 && (fp = fdopen(remout, "w")))) {
1584: (void) fprintf(fp, "%c", 0x01);
1585: (void) fprintf(fp, "scp: ");
1586: va_start(ap, fmt);
1587: (void) vfprintf(fp, fmt, ap);
1588: va_end(ap);
1589: (void) fprintf(fp, "\n");
1590: (void) fflush(fp);
1591: }
1.18 markus 1592:
1593: if (!iamremote) {
1.73 markus 1594: va_start(ap, fmt);
1.186 schwarze 1595: vfmprintf(stderr, fmt, ap);
1.73 markus 1596: va_end(ap);
1.18 markus 1597: fprintf(stderr, "\n");
1598: }
1.1 deraadt 1599: }
1600:
1601: void
1.104 djm 1602: verifydir(char *cp)
1.1 deraadt 1603: {
1604: struct stat stb;
1605:
1606: if (!stat(cp, &stb)) {
1607: if (S_ISDIR(stb.st_mode))
1608: return;
1609: errno = ENOTDIR;
1610: }
1611: run_err("%s: %s", cp, strerror(errno));
1.123 avsm 1612: killchild(0);
1.1 deraadt 1613: }
1614:
1615: int
1.104 djm 1616: okname(char *cp0)
1.1 deraadt 1617: {
1618: int c;
1619: char *cp;
1620:
1621: cp = cp0;
1622: do {
1.75 deraadt 1623: c = (int)*cp;
1.1 deraadt 1624: if (c & 0200)
1625: goto bad;
1.179 deraadt 1626: if (!isalpha(c) && !isdigit((unsigned char)c)) {
1.101 markus 1627: switch (c) {
1628: case '\'':
1629: case '"':
1630: case '`':
1631: case ' ':
1632: case '#':
1633: goto bad;
1634: default:
1635: break;
1636: }
1637: }
1.1 deraadt 1638: } while (*++cp);
1639: return (1);
1640:
1.186 schwarze 1641: bad: fmprintf(stderr, "%s: invalid user name\n", cp0);
1.1 deraadt 1642: return (0);
1643: }
1644:
1645: BUF *
1.104 djm 1646: allocbuf(BUF *bp, int fd, int blksize)
1.1 deraadt 1647: {
1648: size_t size;
1649: struct stat stb;
1650:
1.205 deraadt 1651: if (fstat(fd, &stb) == -1) {
1.1 deraadt 1652: run_err("fstat: %s", strerror(errno));
1653: return (0);
1654: }
1.187 deraadt 1655: size = ROUNDUP(stb.st_blksize, blksize);
1.95 markus 1656: if (size == 0)
1.18 markus 1657: size = blksize;
1.1 deraadt 1658: if (bp->cnt >= size)
1659: return (bp);
1.192 deraadt 1660: bp->buf = xrecallocarray(bp->buf, bp->cnt, size, 1);
1.1 deraadt 1661: bp->cnt = size;
1662: return (bp);
1663: }
1664:
1665: void
1.104 djm 1666: lostconn(int signo)
1.1 deraadt 1667: {
1668: if (!iamremote)
1.172 dtucker 1669: (void)write(STDERR_FILENO, "lost connection\n", 16);
1.74 markus 1670: if (signo)
1671: _exit(1);
1672: else
1673: exit(1);
1.4 aaron 1674: }
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