Annotation of src/usr.bin/ssh/scp.c, Revision 1.209
1.209 ! djm 1: /* $OpenBSD: scp.c,v 1.208 2020/04/30 17:07:10 markus 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 *,...);
1.209 ! djm 357: int note_err(const char *,...);
1.18 markus 358: void verifydir(char *);
1.1 deraadt 359:
360: struct passwd *pwd;
1.18 markus 361: uid_t userid;
1.1 deraadt 362: int errs, remin, remout;
1.202 djm 363: int Tflag, pflag, iamremote, iamrecursive, targetshouldbedirectory;
1.1 deraadt 364:
365: #define CMDNEEDS 64
366: char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */
367:
1.18 markus 368: int response(void);
369: void rsource(char *, struct stat *);
1.202 djm 370: void sink(int, char *[], const char *);
1.18 markus 371: void source(int, char *[]);
372: void tolocal(int, char *[]);
1.193 millert 373: void toremote(int, char *[]);
1.18 markus 374: void usage(void);
1.1 deraadt 375:
376: int
1.104 djm 377: main(int argc, char **argv)
1.1 deraadt 378: {
1.145 djm 379: int ch, fflag, tflag, status, n;
1.193 millert 380: char **newargv;
1.167 djm 381: const char *errstr;
1.1 deraadt 382: extern char *optarg;
383: extern int optind;
1.126 djm 384:
385: /* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */
386: sanitise_stdfd();
1.145 djm 387:
1.186 schwarze 388: setlocale(LC_CTYPE, "");
389:
1.145 djm 390: /* Copy argv, because we modify it */
1.187 deraadt 391: newargv = xcalloc(MAXIMUM(argc + 1, 1), sizeof(*newargv));
1.145 djm 392: for (n = 0; n < argc; n++)
393: newargv[n] = xstrdup(argv[n]);
394: argv = newargv;
1.1 deraadt 395:
1.129 djm 396: memset(&args, '\0', sizeof(args));
1.168 djm 397: memset(&remote_remote_args, '\0', sizeof(remote_remote_args));
398: args.list = remote_remote_args.list = NULL;
1.129 djm 399: addargs(&args, "%s", ssh_program);
1.70 mouring 400: addargs(&args, "-x");
1.168 djm 401: addargs(&args, "-oForwardAgent=no");
402: addargs(&args, "-oPermitLocalCommand=no");
403: addargs(&args, "-oClearAllForwardings=yes");
1.195 djm 404: addargs(&args, "-oRemoteCommand=none");
405: addargs(&args, "-oRequestTTY=no");
1.41 markus 406:
1.202 djm 407: fflag = Tflag = tflag = 0;
408: while ((ch = getopt(argc, argv,
409: "dfl:prtTvBCc:i:P:q12346S:o:F:J:")) != -1) {
1.18 markus 410: switch (ch) {
411: /* User-visible flags. */
1.100 markus 412: case '1':
1.190 djm 413: fatal("SSH protocol v.1 is no longer supported");
414: break;
1.100 markus 415: case '2':
1.190 djm 416: /* Ignored */
417: break;
1.23 markus 418: case '4':
1.41 markus 419: case '6':
420: case 'C':
1.70 mouring 421: addargs(&args, "-%c", ch);
1.168 djm 422: addargs(&remote_remote_args, "-%c", ch);
1.41 markus 423: break;
1.169 markus 424: case '3':
425: throughlocal = 1;
426: break;
1.41 markus 427: case 'o':
428: case 'c':
429: case 'i':
1.83 stevesk 430: case 'F':
1.199 tb 431: case 'J':
1.168 djm 432: addargs(&remote_remote_args, "-%c", ch);
433: addargs(&remote_remote_args, "%s", optarg);
1.165 guenther 434: addargs(&args, "-%c", ch);
435: addargs(&args, "%s", optarg);
1.23 markus 436: break;
1.41 markus 437: case 'P':
1.193 millert 438: sshport = a2port(optarg);
439: if (sshport <= 0)
440: fatal("bad port \"%s\"\n", optarg);
1.41 markus 441: break;
442: case 'B':
1.168 djm 443: addargs(&remote_remote_args, "-oBatchmode=yes");
444: addargs(&args, "-oBatchmode=yes");
1.23 markus 445: break;
1.99 markus 446: case 'l':
1.167 djm 447: limit_kbps = strtonum(optarg, 1, 100 * 1024 * 1024,
448: &errstr);
449: if (errstr != NULL)
1.99 markus 450: usage();
1.167 djm 451: limit_kbps *= 1024; /* kbps */
452: bandwidth_limit_init(&bwlimit, limit_kbps, COPY_BUFLEN);
1.99 markus 453: break;
1.1 deraadt 454: case 'p':
455: pflag = 1;
456: break;
457: case 'r':
458: iamrecursive = 1;
459: break;
1.34 deraadt 460: case 'S':
1.41 markus 461: ssh_program = xstrdup(optarg);
462: break;
463: case 'v':
1.72 markus 464: addargs(&args, "-v");
1.168 djm 465: addargs(&remote_remote_args, "-v");
1.41 markus 466: verbose_mode = 1;
467: break;
468: case 'q':
1.111 dtucker 469: addargs(&args, "-q");
1.168 djm 470: addargs(&remote_remote_args, "-q");
1.41 markus 471: showprogress = 0;
1.34 deraadt 472: break;
473:
1.18 markus 474: /* Server options. */
1.1 deraadt 475: case 'd':
476: targetshouldbedirectory = 1;
477: break;
1.18 markus 478: case 'f': /* "from" */
1.1 deraadt 479: iamremote = 1;
480: fflag = 1;
481: break;
1.18 markus 482: case 't': /* "to" */
1.1 deraadt 483: iamremote = 1;
484: tflag = 1;
485: break;
1.202 djm 486: case 'T':
487: Tflag = 1;
488: break;
1.1 deraadt 489: default:
490: usage();
491: }
1.202 djm 492: }
1.1 deraadt 493: argc -= optind;
494: argv += optind;
495:
496: if ((pwd = getpwuid(userid = getuid())) == NULL)
1.108 deraadt 497: fatal("unknown user %u", (u_int) userid);
1.1 deraadt 498:
1.156 djm 499: if (!isatty(STDOUT_FILENO))
1.7 deraadt 500: showprogress = 0;
1.184 deraadt 501:
502: if (pflag) {
503: /* Cannot pledge: -p allows setuid/setgid files... */
504: } else {
505: if (pledge("stdio rpath wpath cpath fattr tty proc exec",
506: NULL) == -1) {
507: perror("pledge");
508: exit(1);
509: }
510: }
1.7 deraadt 511:
1.1 deraadt 512: remin = STDIN_FILENO;
513: remout = STDOUT_FILENO;
514:
1.52 stevesk 515: if (fflag) {
1.18 markus 516: /* Follow "protocol", send data. */
517: (void) response();
1.1 deraadt 518: source(argc, argv);
519: exit(errs != 0);
520: }
1.18 markus 521: if (tflag) {
522: /* Receive data. */
1.202 djm 523: sink(argc, argv, NULL);
1.1 deraadt 524: exit(errs != 0);
525: }
526: if (argc < 2)
527: usage();
528: if (argc > 2)
529: targetshouldbedirectory = 1;
530:
531: remin = remout = -1;
1.92 markus 532: do_cmd_pid = -1;
1.1 deraadt 533: /* Command to be executed on remote system using "ssh". */
1.55 deraadt 534: (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s",
535: verbose_mode ? " -v" : "",
1.35 deraadt 536: iamrecursive ? " -r" : "", pflag ? " -p" : "",
537: targetshouldbedirectory ? " -d" : "");
1.1 deraadt 538:
1.207 dtucker 539: (void) ssh_signal(SIGPIPE, lostconn);
1.1 deraadt 540:
1.193 millert 541: if (colon(argv[argc - 1])) /* Dest is remote host. */
542: toremote(argc, argv);
1.1 deraadt 543: else {
544: if (targetshouldbedirectory)
545: verifydir(argv[argc - 1]);
1.130 djm 546: tolocal(argc, argv); /* Dest is local host. */
1.92 markus 547: }
548: /*
549: * Finally check the exit status of the ssh process, if one was forked
1.164 stevesk 550: * and no error has occurred yet
1.92 markus 551: */
552: if (do_cmd_pid != -1 && errs == 0) {
553: if (remin != -1)
554: (void) close(remin);
555: if (remout != -1)
556: (void) close(remout);
557: if (waitpid(do_cmd_pid, &status, 0) == -1)
558: errs = 1;
559: else {
560: if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
561: errs = 1;
562: }
1.1 deraadt 563: }
564: exit(errs != 0);
565: }
566:
1.167 djm 567: /* Callback from atomicio6 to update progress meter and limit bandwidth */
568: static int
569: scpio(void *_cnt, size_t s)
1.161 djm 570: {
1.167 djm 571: off_t *cnt = (off_t *)_cnt;
572:
573: *cnt += s;
1.201 dtucker 574: refresh_progress_meter(0);
1.167 djm 575: if (limit_kbps > 0)
576: bandwidth_limit(&bwlimit, s);
577: return 0;
1.161 djm 578: }
579:
1.176 guenther 580: static int
581: do_times(int fd, int verb, const struct stat *sb)
582: {
583: /* strlen(2^64) == 20; strlen(10^6) == 7 */
584: char buf[(20 + 7 + 2) * 2 + 2];
585:
586: (void)snprintf(buf, sizeof(buf), "T%llu 0 %llu 0\n",
587: (unsigned long long) (sb->st_mtime < 0 ? 0 : sb->st_mtime),
588: (unsigned long long) (sb->st_atime < 0 ? 0 : sb->st_atime));
589: if (verb) {
590: fprintf(stderr, "File mtime %lld atime %lld\n",
591: (long long)sb->st_mtime, (long long)sb->st_atime);
592: fprintf(stderr, "Sending file timestamps: %s", buf);
593: }
594: (void) atomicio(vwrite, fd, buf, strlen(buf));
595: return (response());
596: }
597:
1.194 millert 598: static int
599: parse_scp_uri(const char *uri, char **userp, char **hostp, int *portp,
600: char **pathp)
601: {
602: int r;
603:
604: r = parse_uri("scp", uri, userp, hostp, portp, pathp);
605: if (r == 0 && *pathp == NULL)
606: *pathp = xstrdup(".");
607: return r;
608: }
609:
1.204 djm 610: /* Appends a string to an array; returns 0 on success, -1 on alloc failure */
611: static int
612: append(char *cp, char ***ap, size_t *np)
613: {
614: char **tmp;
615:
616: if ((tmp = reallocarray(*ap, *np + 1, sizeof(*tmp))) == NULL)
617: return -1;
618: tmp[(*np)] = cp;
619: (*np)++;
620: *ap = tmp;
621: return 0;
622: }
623:
624: /*
625: * Finds the start and end of the first brace pair in the pattern.
626: * returns 0 on success or -1 for invalid patterns.
627: */
628: static int
629: find_brace(const char *pattern, int *startp, int *endp)
630: {
631: int i;
632: int in_bracket, brace_level;
633:
634: *startp = *endp = -1;
635: in_bracket = brace_level = 0;
636: for (i = 0; i < INT_MAX && *endp < 0 && pattern[i] != '\0'; i++) {
637: switch (pattern[i]) {
638: case '\\':
639: /* skip next character */
640: if (pattern[i + 1] != '\0')
641: i++;
642: break;
643: case '[':
644: in_bracket = 1;
645: break;
646: case ']':
647: in_bracket = 0;
648: break;
649: case '{':
650: if (in_bracket)
651: break;
652: if (pattern[i + 1] == '}') {
653: /* Protect a single {}, for find(1), like csh */
654: i++; /* skip */
655: break;
656: }
657: if (*startp == -1)
658: *startp = i;
659: brace_level++;
660: break;
661: case '}':
662: if (in_bracket)
663: break;
664: if (*startp < 0) {
665: /* Unbalanced brace */
666: return -1;
667: }
668: if (--brace_level <= 0)
669: *endp = i;
670: break;
671: }
672: }
673: /* unbalanced brackets/braces */
674: if (*endp < 0 && (*startp >= 0 || in_bracket))
675: return -1;
676: return 0;
677: }
678:
679: /*
680: * Assembles and records a successfully-expanded pattern, returns -1 on
681: * alloc failure.
682: */
683: static int
684: emit_expansion(const char *pattern, int brace_start, int brace_end,
685: int sel_start, int sel_end, char ***patternsp, size_t *npatternsp)
686: {
687: char *cp;
688: int o = 0, tail_len = strlen(pattern + brace_end + 1);
689:
690: if ((cp = malloc(brace_start + (sel_end - sel_start) +
691: tail_len + 1)) == NULL)
692: return -1;
693:
694: /* Pattern before initial brace */
695: if (brace_start > 0) {
696: memcpy(cp, pattern, brace_start);
697: o = brace_start;
698: }
699: /* Current braced selection */
700: if (sel_end - sel_start > 0) {
701: memcpy(cp + o, pattern + sel_start,
702: sel_end - sel_start);
703: o += sel_end - sel_start;
704: }
705: /* Remainder of pattern after closing brace */
706: if (tail_len > 0) {
707: memcpy(cp + o, pattern + brace_end + 1, tail_len);
708: o += tail_len;
709: }
710: cp[o] = '\0';
711: if (append(cp, patternsp, npatternsp) != 0) {
712: free(cp);
713: return -1;
714: }
715: return 0;
716: }
717:
718: /*
719: * Expand the first encountered brace in pattern, appending the expanded
720: * patterns it yielded to the *patternsp array.
721: *
722: * Returns 0 on success or -1 on allocation failure.
723: *
724: * Signals whether expansion was performed via *expanded and whether
725: * pattern was invalid via *invalid.
726: */
727: static int
728: brace_expand_one(const char *pattern, char ***patternsp, size_t *npatternsp,
729: int *expanded, int *invalid)
730: {
731: int i;
732: int in_bracket, brace_start, brace_end, brace_level;
733: int sel_start, sel_end;
734:
735: *invalid = *expanded = 0;
736:
737: if (find_brace(pattern, &brace_start, &brace_end) != 0) {
738: *invalid = 1;
739: return 0;
740: } else if (brace_start == -1)
741: return 0;
742:
743: in_bracket = brace_level = 0;
744: for (i = sel_start = brace_start + 1; i < brace_end; i++) {
745: switch (pattern[i]) {
746: case '{':
747: if (in_bracket)
748: break;
749: brace_level++;
750: break;
751: case '}':
752: if (in_bracket)
753: break;
754: brace_level--;
755: break;
756: case '[':
757: in_bracket = 1;
758: break;
759: case ']':
760: in_bracket = 0;
761: break;
762: case '\\':
763: if (i < brace_end - 1)
764: i++; /* skip */
765: break;
766: }
767: if (pattern[i] == ',' || i == brace_end - 1) {
768: if (in_bracket || brace_level > 0)
769: continue;
770: /* End of a selection, emit an expanded pattern */
771:
772: /* Adjust end index for last selection */
773: sel_end = (i == brace_end - 1) ? brace_end : i;
774: if (emit_expansion(pattern, brace_start, brace_end,
775: sel_start, sel_end, patternsp, npatternsp) != 0)
776: return -1;
777: /* move on to the next selection */
778: sel_start = i + 1;
779: continue;
780: }
781: }
782: if (in_bracket || brace_level > 0) {
783: *invalid = 1;
784: return 0;
785: }
786: /* success */
787: *expanded = 1;
788: return 0;
789: }
790:
791: /* Expand braces from pattern. Returns 0 on success, -1 on failure */
792: static int
793: brace_expand(const char *pattern, char ***patternsp, size_t *npatternsp)
794: {
795: char *cp, *cp2, **active = NULL, **done = NULL;
796: size_t i, nactive = 0, ndone = 0;
797: int ret = -1, invalid = 0, expanded = 0;
798:
799: *patternsp = NULL;
800: *npatternsp = 0;
801:
802: /* Start the worklist with the original pattern */
803: if ((cp = strdup(pattern)) == NULL)
804: return -1;
805: if (append(cp, &active, &nactive) != 0) {
806: free(cp);
807: return -1;
808: }
809: while (nactive > 0) {
810: cp = active[nactive - 1];
811: nactive--;
812: if (brace_expand_one(cp, &active, &nactive,
813: &expanded, &invalid) == -1) {
814: free(cp);
815: goto fail;
816: }
817: if (invalid)
818: fatal("%s: invalid brace pattern \"%s\"", __func__, cp);
819: if (expanded) {
820: /*
821: * Current entry expanded to new entries on the
822: * active list; discard the progenitor pattern.
823: */
824: free(cp);
825: continue;
826: }
827: /*
828: * Pattern did not expand; append the finename component to
829: * the completed list
830: */
831: if ((cp2 = strrchr(cp, '/')) != NULL)
832: *cp2++ = '\0';
833: else
834: cp2 = cp;
835: if (append(xstrdup(cp2), &done, &ndone) != 0) {
836: free(cp);
837: goto fail;
838: }
839: free(cp);
840: }
841: /* success */
842: *patternsp = done;
843: *npatternsp = ndone;
844: done = NULL;
845: ndone = 0;
846: ret = 0;
847: fail:
848: for (i = 0; i < nactive; i++)
849: free(active[i]);
850: free(active);
851: for (i = 0; i < ndone; i++)
852: free(done[i]);
853: free(done);
854: return ret;
855: }
856:
1.1 deraadt 857: void
1.193 millert 858: toremote(int argc, char **argv)
1.1 deraadt 859: {
1.193 millert 860: char *suser = NULL, *host = NULL, *src = NULL;
861: char *bp, *tuser, *thost, *targ;
862: int sport = -1, tport = -1;
1.129 djm 863: arglist alist;
1.193 millert 864: int i, r;
1.168 djm 865: u_int j;
1.129 djm 866:
867: memset(&alist, '\0', sizeof(alist));
868: alist.list = NULL;
1.1 deraadt 869:
1.193 millert 870: /* Parse target */
1.194 millert 871: r = parse_scp_uri(argv[argc - 1], &tuser, &thost, &tport, &targ);
872: if (r == -1) {
873: fmprintf(stderr, "%s: invalid uri\n", argv[argc - 1]);
874: ++errs;
875: goto out;
876: }
1.193 millert 877: if (r != 0) {
878: if (parse_user_host_path(argv[argc - 1], &tuser, &thost,
1.194 millert 879: &targ) == -1) {
880: fmprintf(stderr, "%s: invalid target\n", argv[argc - 1]);
881: ++errs;
1.193 millert 882: goto out;
1.194 millert 883: }
1.129 djm 884: }
1.194 millert 885: if (tuser != NULL && !okname(tuser)) {
886: ++errs;
1.193 millert 887: goto out;
1.194 millert 888: }
1.129 djm 889:
1.193 millert 890: /* Parse source files */
1.1 deraadt 891: for (i = 0; i < argc - 1; i++) {
1.193 millert 892: free(suser);
893: free(host);
894: free(src);
1.194 millert 895: r = parse_scp_uri(argv[i], &suser, &host, &sport, &src);
896: if (r == -1) {
897: fmprintf(stderr, "%s: invalid uri\n", argv[i]);
898: ++errs;
899: continue;
900: }
901: if (r != 0) {
1.193 millert 902: parse_user_host_path(argv[i], &suser, &host, &src);
1.194 millert 903: }
1.193 millert 904: if (suser != NULL && !okname(suser)) {
905: ++errs;
906: continue;
907: }
908: if (host && throughlocal) { /* extended remote to remote */
1.171 djm 909: xasprintf(&bp, "%s -f %s%s", cmd,
910: *src == '-' ? "-- " : "", src);
1.193 millert 911: if (do_cmd(host, suser, sport, bp, &remin, &remout) < 0)
1.169 markus 912: exit(1);
1.173 djm 913: free(bp);
1.171 djm 914: xasprintf(&bp, "%s -t %s%s", cmd,
915: *targ == '-' ? "-- " : "", targ);
1.193 millert 916: if (do_cmd2(thost, tuser, tport, bp, remin, remout) < 0)
1.169 markus 917: exit(1);
1.173 djm 918: free(bp);
1.169 markus 919: (void) close(remin);
920: (void) close(remout);
921: remin = remout = -1;
1.193 millert 922: } else if (host) { /* standard remote to remote */
923: if (tport != -1 && tport != SSH_DEFAULT_PORT) {
924: /* This would require the remote support URIs */
925: fatal("target port not supported with two "
926: "remote hosts without the -3 option");
927: }
928:
1.129 djm 929: freeargs(&alist);
930: addargs(&alist, "%s", ssh_program);
931: addargs(&alist, "-x");
1.168 djm 932: addargs(&alist, "-oClearAllForwardings=yes");
1.129 djm 933: addargs(&alist, "-n");
1.168 djm 934: for (j = 0; j < remote_remote_args.num; j++) {
935: addargs(&alist, "%s",
936: remote_remote_args.list[j]);
937: }
1.193 millert 938:
939: if (sport != -1) {
940: addargs(&alist, "-p");
941: addargs(&alist, "%d", sport);
942: }
943: if (suser) {
1.129 djm 944: addargs(&alist, "-l");
945: addargs(&alist, "%s", suser);
1.23 markus 946: }
1.165 guenther 947: addargs(&alist, "--");
1.129 djm 948: addargs(&alist, "%s", host);
949: addargs(&alist, "%s", cmd);
950: addargs(&alist, "%s", src);
951: addargs(&alist, "%s%s%s:%s",
952: tuser ? tuser : "", tuser ? "@" : "",
953: thost, targ);
954: if (do_local_cmd(&alist) != 0)
1.109 markus 955: errs = 1;
1.18 markus 956: } else { /* local to remote */
1.1 deraadt 957: if (remin == -1) {
1.171 djm 958: xasprintf(&bp, "%s -t %s%s", cmd,
959: *targ == '-' ? "-- " : "", targ);
1.193 millert 960: if (do_cmd(thost, tuser, tport, bp, &remin,
1.140 deraadt 961: &remout) < 0)
1.18 markus 962: exit(1);
1.1 deraadt 963: if (response() < 0)
964: exit(1);
1.173 djm 965: free(bp);
1.1 deraadt 966: }
1.18 markus 967: source(1, argv + i);
1.1 deraadt 968: }
969: }
1.193 millert 970: out:
971: free(tuser);
972: free(thost);
973: free(targ);
974: free(suser);
975: free(host);
976: free(src);
1.1 deraadt 977: }
978:
979: void
1.104 djm 980: tolocal(int argc, char **argv)
1.1 deraadt 981: {
1.193 millert 982: char *bp, *host = NULL, *src = NULL, *suser = NULL;
1.129 djm 983: arglist alist;
1.193 millert 984: int i, r, sport = -1;
1.129 djm 985:
986: memset(&alist, '\0', sizeof(alist));
987: alist.list = NULL;
1.1 deraadt 988:
989: for (i = 0; i < argc - 1; i++) {
1.193 millert 990: free(suser);
991: free(host);
992: free(src);
1.194 millert 993: r = parse_scp_uri(argv[i], &suser, &host, &sport, &src);
1.193 millert 994: if (r == -1) {
1.194 millert 995: fmprintf(stderr, "%s: invalid uri\n", argv[i]);
1.193 millert 996: ++errs;
997: continue;
998: }
999: if (r != 0)
1000: parse_user_host_path(argv[i], &suser, &host, &src);
1001: if (suser != NULL && !okname(suser)) {
1002: ++errs;
1003: continue;
1004: }
1005: if (!host) { /* Local to local. */
1.129 djm 1006: freeargs(&alist);
1007: addargs(&alist, "%s", _PATH_CP);
1008: if (iamrecursive)
1009: addargs(&alist, "-r");
1010: if (pflag)
1011: addargs(&alist, "-p");
1.165 guenther 1012: addargs(&alist, "--");
1.129 djm 1013: addargs(&alist, "%s", argv[i]);
1014: addargs(&alist, "%s", argv[argc-1]);
1015: if (do_local_cmd(&alist))
1.1 deraadt 1016: ++errs;
1017: continue;
1018: }
1.193 millert 1019: /* Remote to local. */
1.171 djm 1020: xasprintf(&bp, "%s -f %s%s",
1021: cmd, *src == '-' ? "-- " : "", src);
1.193 millert 1022: if (do_cmd(host, suser, sport, bp, &remin, &remout) < 0) {
1.173 djm 1023: free(bp);
1.18 markus 1024: ++errs;
1025: continue;
1.1 deraadt 1026: }
1.173 djm 1027: free(bp);
1.202 djm 1028: sink(1, argv + argc - 1, src);
1.18 markus 1029: (void) close(remin);
1.1 deraadt 1030: remin = remout = -1;
1031: }
1.193 millert 1032: free(suser);
1033: free(host);
1034: free(src);
1.1 deraadt 1035: }
1036:
1037: void
1.104 djm 1038: source(int argc, char **argv)
1.1 deraadt 1039: {
1040: struct stat stb;
1041: static BUF buffer;
1042: BUF *bp;
1.163 dtucker 1043: off_t i, statbytes;
1.180 djm 1044: size_t amt, nr;
1.125 dtucker 1045: int fd = -1, haderr, indx;
1.206 dtucker 1046: char *last, *name, buf[PATH_MAX + 128], encname[PATH_MAX];
1.65 deraadt 1047: int len;
1.1 deraadt 1048:
1049: for (indx = 0; indx < argc; ++indx) {
1.18 markus 1050: name = argv[indx];
1.11 aaron 1051: statbytes = 0;
1.65 deraadt 1052: len = strlen(name);
1053: while (len > 1 && name[len-1] == '/')
1054: name[--len] = '\0';
1.205 deraadt 1055: if ((fd = open(name, O_RDONLY|O_NONBLOCK, 0)) == -1)
1.158 dtucker 1056: goto syserr;
1.85 markus 1057: if (strchr(name, '\n') != NULL) {
1.158 dtucker 1058: strnvis(encname, name, sizeof(encname), VIS_NL);
1059: name = encname;
1.85 markus 1060: }
1.205 deraadt 1061: if (fstat(fd, &stb) == -1) {
1.1 deraadt 1062: syserr: run_err("%s: %s", name, strerror(errno));
1063: goto next;
1064: }
1.163 dtucker 1065: if (stb.st_size < 0) {
1066: run_err("%s: %s", name, "Negative file size");
1067: goto next;
1068: }
1.157 djm 1069: unset_nonblock(fd);
1.1 deraadt 1070: switch (stb.st_mode & S_IFMT) {
1071: case S_IFREG:
1072: break;
1073: case S_IFDIR:
1074: if (iamrecursive) {
1075: rsource(name, &stb);
1076: goto next;
1077: }
1078: /* FALLTHROUGH */
1079: default:
1080: run_err("%s: not a regular file", name);
1081: goto next;
1082: }
1083: if ((last = strrchr(name, '/')) == NULL)
1084: last = name;
1085: else
1086: ++last;
1.11 aaron 1087: curfile = last;
1.1 deraadt 1088: if (pflag) {
1.176 guenther 1089: if (do_times(remout, verbose_mode, &stb) < 0)
1.1 deraadt 1090: goto next;
1091: }
1092: #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
1.61 markus 1093: snprintf(buf, sizeof buf, "C%04o %lld %s\n",
1.47 markus 1094: (u_int) (stb.st_mode & FILEMODEMASK),
1.62 markus 1095: (long long)stb.st_size, last);
1.186 schwarze 1096: if (verbose_mode)
1097: fmprintf(stderr, "Sending file modes: %s", buf);
1.107 deraadt 1098: (void) atomicio(vwrite, remout, buf, strlen(buf));
1.1 deraadt 1099: if (response() < 0)
1100: goto next;
1.161 djm 1101: if ((bp = allocbuf(&buffer, fd, COPY_BUFLEN)) == NULL) {
1.127 deraadt 1102: next: if (fd != -1) {
1103: (void) close(fd);
1104: fd = -1;
1105: }
1.1 deraadt 1106: continue;
1107: }
1.97 fgsch 1108: if (showprogress)
1109: start_progress_meter(curfile, stb.st_size, &statbytes);
1.161 djm 1110: set_nonblock(remout);
1.1 deraadt 1111: for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
1112: amt = bp->cnt;
1.163 dtucker 1113: if (i + (off_t)amt > stb.st_size)
1.1 deraadt 1114: amt = stb.st_size - i;
1115: if (!haderr) {
1.180 djm 1116: if ((nr = atomicio(read, fd,
1117: bp->buf, amt)) != amt) {
1.122 avsm 1118: haderr = errno;
1.180 djm 1119: memset(bp->buf + nr, 0, amt - nr);
1120: }
1.1 deraadt 1121: }
1.161 djm 1122: /* Keep writing after error to retain sync */
1123: if (haderr) {
1124: (void)atomicio(vwrite, remout, bp->buf, amt);
1.180 djm 1125: memset(bp->buf, 0, amt);
1.161 djm 1126: continue;
1.1 deraadt 1127: }
1.167 djm 1128: if (atomicio6(vwrite, remout, bp->buf, amt, scpio,
1.161 djm 1129: &statbytes) != amt)
1130: haderr = errno;
1.1 deraadt 1131: }
1.161 djm 1132: unset_nonblock(remout);
1.4 aaron 1133:
1.127 deraadt 1134: if (fd != -1) {
1.205 deraadt 1135: if (close(fd) == -1 && !haderr)
1.127 deraadt 1136: haderr = errno;
1137: fd = -1;
1138: }
1.1 deraadt 1139: if (!haderr)
1.107 deraadt 1140: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 1141: else
1142: run_err("%s: %s", name, strerror(haderr));
1.18 markus 1143: (void) response();
1.185 dtucker 1144: if (showprogress)
1145: stop_progress_meter();
1.1 deraadt 1146: }
1147: }
1148:
1149: void
1.104 djm 1150: rsource(char *name, struct stat *statp)
1.1 deraadt 1151: {
1152: DIR *dirp;
1153: struct dirent *dp;
1.181 deraadt 1154: char *last, *vect[1], path[PATH_MAX];
1.1 deraadt 1155:
1156: if (!(dirp = opendir(name))) {
1157: run_err("%s: %s", name, strerror(errno));
1158: return;
1159: }
1160: last = strrchr(name, '/');
1.183 mmcc 1161: if (last == NULL)
1.1 deraadt 1162: last = name;
1163: else
1164: last++;
1165: if (pflag) {
1.176 guenther 1166: if (do_times(remout, verbose_mode, statp) < 0) {
1.1 deraadt 1167: closedir(dirp);
1168: return;
1169: }
1170: }
1.55 deraadt 1171: (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n",
1.47 markus 1172: (u_int) (statp->st_mode & FILEMODEMASK), 0, last);
1.18 markus 1173: if (verbose_mode)
1.186 schwarze 1174: fmprintf(stderr, "Entering directory: %s", path);
1.107 deraadt 1175: (void) atomicio(vwrite, remout, path, strlen(path));
1.1 deraadt 1176: if (response() < 0) {
1177: closedir(dirp);
1178: return;
1179: }
1.63 stevesk 1180: while ((dp = readdir(dirp)) != NULL) {
1.1 deraadt 1181: if (dp->d_ino == 0)
1182: continue;
1183: if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
1184: continue;
1185: if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) {
1186: run_err("%s/%s: name too long", name, dp->d_name);
1187: continue;
1188: }
1.55 deraadt 1189: (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name);
1.1 deraadt 1190: vect[0] = path;
1191: source(1, vect);
1192: }
1.18 markus 1193: (void) closedir(dirp);
1.107 deraadt 1194: (void) atomicio(vwrite, remout, "E\n", 2);
1.18 markus 1195: (void) response();
1.1 deraadt 1196: }
1197:
1.189 millert 1198: #define TYPE_OVERFLOW(type, val) \
1199: ((sizeof(type) == 4 && (val) > INT32_MAX) || \
1200: (sizeof(type) == 8 && (val) > INT64_MAX) || \
1201: (sizeof(type) != 4 && sizeof(type) != 8))
1202:
1.1 deraadt 1203: void
1.202 djm 1204: sink(int argc, char **argv, const char *src)
1.1 deraadt 1205: {
1206: static BUF buffer;
1207: struct stat stb;
1208: BUF *bp;
1.122 avsm 1209: off_t i;
1.124 djm 1210: size_t j, count;
1.140 deraadt 1211: int amt, exists, first, ofd;
1212: mode_t mode, omode, mask;
1.97 fgsch 1213: off_t size, statbytes;
1.176 guenther 1214: unsigned long long ull;
1.209 ! djm 1215: int setimes, targisdir, wrerr;
1.186 schwarze 1216: char ch, *cp, *np, *targ, *why, *vect[1], buf[2048], visbuf[2048];
1.204 djm 1217: char **patterns = NULL;
1218: size_t n, npatterns = 0;
1.40 markus 1219: struct timeval tv[2];
1.1 deraadt 1220:
1.66 stevesk 1221: #define atime tv[0]
1222: #define mtime tv[1]
1.118 deraadt 1223: #define SCREWUP(str) { why = str; goto screwup; }
1.1 deraadt 1224:
1.189 millert 1225: if (TYPE_OVERFLOW(time_t, 0) || TYPE_OVERFLOW(off_t, 0))
1226: SCREWUP("Unexpected off_t/time_t size");
1227:
1.1 deraadt 1228: setimes = targisdir = 0;
1229: mask = umask(0);
1230: if (!pflag)
1.18 markus 1231: (void) umask(mask);
1.1 deraadt 1232: if (argc != 1) {
1233: run_err("ambiguous target");
1234: exit(1);
1235: }
1236: targ = *argv;
1237: if (targetshouldbedirectory)
1238: verifydir(targ);
1.18 markus 1239:
1.107 deraadt 1240: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 1241: if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
1242: targisdir = 1;
1.202 djm 1243: if (src != NULL && !iamrecursive && !Tflag) {
1244: /*
1245: * Prepare to try to restrict incoming filenames to match
1246: * the requested destination file glob.
1247: */
1.204 djm 1248: if (brace_expand(src, &patterns, &npatterns) != 0)
1249: fatal("%s: could not expand pattern", __func__);
1.202 djm 1250: }
1.1 deraadt 1251: for (first = 1;; first = 0) {
1252: cp = buf;
1.122 avsm 1253: if (atomicio(read, remin, cp, 1) != 1)
1.204 djm 1254: goto done;
1.1 deraadt 1255: if (*cp++ == '\n')
1256: SCREWUP("unexpected <newline>");
1257: do {
1.30 deraadt 1258: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 1259: SCREWUP("lost connection");
1260: *cp++ = ch;
1261: } while (cp < &buf[sizeof(buf) - 1] && ch != '\n');
1262: *cp = 0;
1.114 markus 1263: if (verbose_mode)
1.186 schwarze 1264: fmprintf(stderr, "Sink: %s", buf);
1.1 deraadt 1265:
1266: if (buf[0] == '\01' || buf[0] == '\02') {
1.186 schwarze 1267: if (iamremote == 0) {
1268: (void) snmprintf(visbuf, sizeof(visbuf),
1269: NULL, "%s", buf + 1);
1.107 deraadt 1270: (void) atomicio(vwrite, STDERR_FILENO,
1.186 schwarze 1271: visbuf, strlen(visbuf));
1272: }
1.1 deraadt 1273: if (buf[0] == '\02')
1274: exit(1);
1275: ++errs;
1276: continue;
1277: }
1278: if (buf[0] == 'E') {
1.107 deraadt 1279: (void) atomicio(vwrite, remout, "", 1);
1.204 djm 1280: goto done;
1.1 deraadt 1281: }
1282: if (ch == '\n')
1283: *--cp = 0;
1284:
1285: cp = buf;
1286: if (*cp == 'T') {
1287: setimes++;
1288: cp++;
1.176 guenther 1289: if (!isdigit((unsigned char)*cp))
1290: SCREWUP("mtime.sec not present");
1291: ull = strtoull(cp, &cp, 10);
1.66 stevesk 1292: if (!cp || *cp++ != ' ')
1.1 deraadt 1293: SCREWUP("mtime.sec not delimited");
1.189 millert 1294: if (TYPE_OVERFLOW(time_t, ull))
1.176 guenther 1295: setimes = 0; /* out of range */
1296: mtime.tv_sec = ull;
1.66 stevesk 1297: mtime.tv_usec = strtol(cp, &cp, 10);
1.176 guenther 1298: if (!cp || *cp++ != ' ' || mtime.tv_usec < 0 ||
1299: mtime.tv_usec > 999999)
1.1 deraadt 1300: SCREWUP("mtime.usec not delimited");
1.176 guenther 1301: if (!isdigit((unsigned char)*cp))
1302: SCREWUP("atime.sec not present");
1303: ull = strtoull(cp, &cp, 10);
1.66 stevesk 1304: if (!cp || *cp++ != ' ')
1.1 deraadt 1305: SCREWUP("atime.sec not delimited");
1.189 millert 1306: if (TYPE_OVERFLOW(time_t, ull))
1.176 guenther 1307: setimes = 0; /* out of range */
1308: atime.tv_sec = ull;
1.66 stevesk 1309: atime.tv_usec = strtol(cp, &cp, 10);
1.176 guenther 1310: if (!cp || *cp++ != '\0' || atime.tv_usec < 0 ||
1311: atime.tv_usec > 999999)
1.1 deraadt 1312: SCREWUP("atime.usec not delimited");
1.107 deraadt 1313: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 1314: continue;
1315: }
1316: if (*cp != 'C' && *cp != 'D') {
1317: /*
1318: * Check for the case "rcp remote:foo\* local:bar".
1319: * In this case, the line "No match." can be returned
1320: * by the shell before the rcp command on the remote is
1321: * executed so the ^Aerror_message convention isn't
1322: * followed.
1323: */
1324: if (first) {
1325: run_err("%s", cp);
1326: exit(1);
1327: }
1328: SCREWUP("expected control record");
1329: }
1330: mode = 0;
1331: for (++cp; cp < buf + 5; cp++) {
1332: if (*cp < '0' || *cp > '7')
1333: SCREWUP("bad mode");
1334: mode = (mode << 3) | (*cp - '0');
1335: }
1.197 dtucker 1336: if (!pflag)
1337: mode &= ~mask;
1.1 deraadt 1338: if (*cp++ != ' ')
1339: SCREWUP("mode not delimited");
1340:
1.188 millert 1341: if (!isdigit((unsigned char)*cp))
1342: SCREWUP("size not present");
1343: ull = strtoull(cp, &cp, 10);
1344: if (!cp || *cp++ != ' ')
1.1 deraadt 1345: SCREWUP("size not delimited");
1.189 millert 1346: if (TYPE_OVERFLOW(off_t, ull))
1.188 millert 1347: SCREWUP("size out of range");
1348: size = (off_t)ull;
1349:
1.198 djm 1350: if (*cp == '\0' || strchr(cp, '/') != NULL ||
1351: strcmp(cp, ".") == 0 || strcmp(cp, "..") == 0) {
1.114 markus 1352: run_err("error: unexpected filename: %s", cp);
1353: exit(1);
1354: }
1.204 djm 1355: if (npatterns > 0) {
1356: for (n = 0; n < npatterns; n++) {
1357: if (fnmatch(patterns[n], cp, 0) == 0)
1358: break;
1359: }
1360: if (n >= npatterns)
1361: SCREWUP("filename does not match request");
1362: }
1.1 deraadt 1363: if (targisdir) {
1364: static char *namebuf;
1.124 djm 1365: static size_t cursize;
1.1 deraadt 1366: size_t need;
1367:
1368: need = strlen(targ) + strlen(cp) + 250;
1.55 deraadt 1369: if (need > cursize) {
1.173 djm 1370: free(namebuf);
1.18 markus 1371: namebuf = xmalloc(need);
1.55 deraadt 1372: cursize = need;
1373: }
1374: (void) snprintf(namebuf, need, "%s%s%s", targ,
1.88 mouring 1375: strcmp(targ, "/") ? "/" : "", cp);
1.1 deraadt 1376: np = namebuf;
1377: } else
1378: np = targ;
1.12 aaron 1379: curfile = cp;
1.1 deraadt 1380: exists = stat(np, &stb) == 0;
1381: if (buf[0] == 'D') {
1382: int mod_flag = pflag;
1.114 markus 1383: if (!iamrecursive)
1384: SCREWUP("received directory without -r");
1.1 deraadt 1385: if (exists) {
1386: if (!S_ISDIR(stb.st_mode)) {
1387: errno = ENOTDIR;
1388: goto bad;
1389: }
1390: if (pflag)
1.18 markus 1391: (void) chmod(np, mode);
1.1 deraadt 1392: } else {
1.18 markus 1393: /* Handle copying from a read-only
1394: directory */
1.1 deraadt 1395: mod_flag = 1;
1.205 deraadt 1396: if (mkdir(np, mode | S_IRWXU) == -1)
1.1 deraadt 1397: goto bad;
1398: }
1.58 danh 1399: vect[0] = xstrdup(np);
1.202 djm 1400: sink(1, vect, src);
1.1 deraadt 1401: if (setimes) {
1402: setimes = 0;
1.205 deraadt 1403: if (utimes(vect[0], tv) == -1)
1.18 markus 1404: run_err("%s: set times: %s",
1.59 deraadt 1405: vect[0], strerror(errno));
1.1 deraadt 1406: }
1407: if (mod_flag)
1.59 deraadt 1408: (void) chmod(vect[0], mode);
1.173 djm 1409: free(vect[0]);
1.1 deraadt 1410: continue;
1411: }
1412: omode = mode;
1.174 dtucker 1413: mode |= S_IWUSR;
1.205 deraadt 1414: if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) == -1) {
1.1 deraadt 1415: bad: run_err("%s: %s", np, strerror(errno));
1416: continue;
1417: }
1.107 deraadt 1418: (void) atomicio(vwrite, remout, "", 1);
1.161 djm 1419: if ((bp = allocbuf(&buffer, ofd, COPY_BUFLEN)) == NULL) {
1.18 markus 1420: (void) close(ofd);
1.1 deraadt 1421: continue;
1422: }
1423: cp = bp->buf;
1.209 ! djm 1424: wrerr = 0;
1.7 deraadt 1425:
1.209 ! djm 1426: /*
! 1427: * NB. do not use run_err() unless immediately followed by
! 1428: * exit() below as it may send a spurious reply that might
! 1429: * desyncronise us from the peer. Use note_err() instead.
! 1430: */
1.12 aaron 1431: statbytes = 0;
1.97 fgsch 1432: if (showprogress)
1433: start_progress_meter(curfile, size, &statbytes);
1.161 djm 1434: set_nonblock(remin);
1435: for (count = i = 0; i < size; i += bp->cnt) {
1436: amt = bp->cnt;
1.1 deraadt 1437: if (i + amt > size)
1438: amt = size - i;
1439: count += amt;
1440: do {
1.167 djm 1441: j = atomicio6(read, remin, cp, amt,
1442: scpio, &statbytes);
1.122 avsm 1443: if (j == 0) {
1.161 djm 1444: run_err("%s", j != EPIPE ?
1445: strerror(errno) :
1.63 stevesk 1446: "dropped connection");
1.1 deraadt 1447: exit(1);
1448: }
1449: amt -= j;
1450: cp += j;
1451: } while (amt > 0);
1.112 djm 1452:
1.1 deraadt 1453: if (count == bp->cnt) {
1454: /* Keep reading so we stay sync'd up. */
1.209 ! djm 1455: if (!wrerr) {
1.122 avsm 1456: if (atomicio(vwrite, ofd, bp->buf,
1457: count) != count) {
1.209 ! djm 1458: note_err("%s: %s", np,
! 1459: strerror(errno));
! 1460: wrerr = 1;
1.1 deraadt 1461: }
1462: }
1463: count = 0;
1464: cp = bp->buf;
1465: }
1466: }
1.161 djm 1467: unset_nonblock(remin);
1.209 ! djm 1468: if (count != 0 && !wrerr &&
1.122 avsm 1469: atomicio(vwrite, ofd, bp->buf, count) != count) {
1.209 ! djm 1470: note_err("%s: %s", np, strerror(errno));
! 1471: wrerr = 1;
1.1 deraadt 1472: }
1.209 ! djm 1473: if (!wrerr && (!exists || S_ISREG(stb.st_mode)) &&
! 1474: ftruncate(ofd, size) != 0)
! 1475: note_err("%s: truncate: %s", np, strerror(errno));
1.1 deraadt 1476: if (pflag) {
1477: if (exists || omode != mode)
1.116 dtucker 1478: if (fchmod(ofd, omode)) {
1.209 ! djm 1479: note_err("%s: set mode: %s",
1.63 stevesk 1480: np, strerror(errno));
1.116 dtucker 1481: }
1.1 deraadt 1482: } else {
1483: if (!exists && omode != mode)
1.116 dtucker 1484: if (fchmod(ofd, omode & ~mask)) {
1.209 ! djm 1485: note_err("%s: set mode: %s",
1.63 stevesk 1486: np, strerror(errno));
1.116 dtucker 1487: }
1.1 deraadt 1488: }
1.209 ! djm 1489: if (close(ofd) == -1)
! 1490: note_err(np, "%s: close: %s", np, strerror(errno));
1.18 markus 1491: (void) response();
1.185 dtucker 1492: if (showprogress)
1493: stop_progress_meter();
1.209 ! djm 1494: if (setimes && !wrerr) {
1.1 deraadt 1495: setimes = 0;
1.205 deraadt 1496: if (utimes(np, tv) == -1) {
1.209 ! djm 1497: note_err("%s: set times: %s",
1.63 stevesk 1498: np, strerror(errno));
1.1 deraadt 1499: }
1500: }
1.209 ! djm 1501: /* If no error was noted then signal success for this file */
! 1502: if (note_err(NULL) == 0)
1.107 deraadt 1503: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 1504: }
1.204 djm 1505: done:
1506: for (n = 0; n < npatterns; n++)
1507: free(patterns[n]);
1508: free(patterns);
1509: return;
1.1 deraadt 1510: screwup:
1.204 djm 1511: for (n = 0; n < npatterns; n++)
1512: free(patterns[n]);
1513: free(patterns);
1.1 deraadt 1514: run_err("protocol error: %s", why);
1515: exit(1);
1516: }
1517:
1518: int
1.86 itojun 1519: response(void)
1.1 deraadt 1520: {
1.186 schwarze 1521: char ch, *cp, resp, rbuf[2048], visbuf[2048];
1.1 deraadt 1522:
1.30 deraadt 1523: if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp))
1.1 deraadt 1524: lostconn(0);
1525:
1526: cp = rbuf;
1.18 markus 1527: switch (resp) {
1528: case 0: /* ok */
1.1 deraadt 1529: return (0);
1530: default:
1531: *cp++ = resp;
1532: /* FALLTHROUGH */
1.18 markus 1533: case 1: /* error, followed by error msg */
1534: case 2: /* fatal error, "" */
1.1 deraadt 1535: do {
1.30 deraadt 1536: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 1537: lostconn(0);
1538: *cp++ = ch;
1539: } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n');
1540:
1.186 schwarze 1541: if (!iamremote) {
1542: cp[-1] = '\0';
1543: (void) snmprintf(visbuf, sizeof(visbuf),
1544: NULL, "%s\n", rbuf);
1545: (void) atomicio(vwrite, STDERR_FILENO,
1546: visbuf, strlen(visbuf));
1547: }
1.1 deraadt 1548: ++errs;
1549: if (resp == 1)
1550: return (-1);
1551: exit(1);
1552: }
1553: /* NOTREACHED */
1554: }
1555:
1556: void
1.86 itojun 1557: usage(void)
1.1 deraadt 1558: {
1.83 stevesk 1559: (void) fprintf(stderr,
1.203 jmc 1560: "usage: scp [-346BCpqrTv] [-c cipher] [-F ssh_config] [-i identity_file]\n"
1.199 tb 1561: " [-J destination] [-l limit] [-o ssh_option] [-P port]\n"
1562: " [-S program] source ... target\n");
1.1 deraadt 1563: exit(1);
1564: }
1565:
1566: void
1.18 markus 1567: run_err(const char *fmt,...)
1.1 deraadt 1568: {
1569: static FILE *fp;
1570: va_list ap;
1571:
1572: ++errs;
1.136 biorn 1573: if (fp != NULL || (remout != -1 && (fp = fdopen(remout, "w")))) {
1574: (void) fprintf(fp, "%c", 0x01);
1575: (void) fprintf(fp, "scp: ");
1576: va_start(ap, fmt);
1577: (void) vfprintf(fp, fmt, ap);
1578: va_end(ap);
1579: (void) fprintf(fp, "\n");
1580: (void) fflush(fp);
1581: }
1.18 markus 1582:
1583: if (!iamremote) {
1.73 markus 1584: va_start(ap, fmt);
1.186 schwarze 1585: vfmprintf(stderr, fmt, ap);
1.73 markus 1586: va_end(ap);
1.18 markus 1587: fprintf(stderr, "\n");
1588: }
1.209 ! djm 1589: }
! 1590:
! 1591: /*
! 1592: * Notes a sink error for sending at the end of a file transfer. Returns 0 if
! 1593: * no error has been noted or -1 otherwise. Use note_err(NULL) to flush
! 1594: * any active error at the end of the transfer.
! 1595: */
! 1596: int
! 1597: note_err(const char *fmt, ...)
! 1598: {
! 1599: static char *emsg;
! 1600: va_list ap;
! 1601:
! 1602: /* Replay any previously-noted error */
! 1603: if (fmt == NULL) {
! 1604: if (emsg == NULL)
! 1605: return 0;
! 1606: run_err("%s", emsg);
! 1607: free(emsg);
! 1608: emsg = NULL;
! 1609: return -1;
! 1610: }
! 1611:
! 1612: errs++;
! 1613: /* Prefer first-noted error */
! 1614: if (emsg != NULL)
! 1615: return -1;
! 1616:
! 1617: va_start(ap, fmt);
! 1618: vasnmprintf(&emsg, INT_MAX, NULL, fmt, ap);
! 1619: va_end(ap);
! 1620: return -1;
1.1 deraadt 1621: }
1622:
1623: void
1.104 djm 1624: verifydir(char *cp)
1.1 deraadt 1625: {
1626: struct stat stb;
1627:
1628: if (!stat(cp, &stb)) {
1629: if (S_ISDIR(stb.st_mode))
1630: return;
1631: errno = ENOTDIR;
1632: }
1633: run_err("%s: %s", cp, strerror(errno));
1.123 avsm 1634: killchild(0);
1.1 deraadt 1635: }
1636:
1637: int
1.104 djm 1638: okname(char *cp0)
1.1 deraadt 1639: {
1640: int c;
1641: char *cp;
1642:
1643: cp = cp0;
1644: do {
1.75 deraadt 1645: c = (int)*cp;
1.1 deraadt 1646: if (c & 0200)
1647: goto bad;
1.179 deraadt 1648: if (!isalpha(c) && !isdigit((unsigned char)c)) {
1.101 markus 1649: switch (c) {
1650: case '\'':
1651: case '"':
1652: case '`':
1653: case ' ':
1654: case '#':
1655: goto bad;
1656: default:
1657: break;
1658: }
1659: }
1.1 deraadt 1660: } while (*++cp);
1661: return (1);
1662:
1.186 schwarze 1663: bad: fmprintf(stderr, "%s: invalid user name\n", cp0);
1.1 deraadt 1664: return (0);
1665: }
1666:
1667: BUF *
1.104 djm 1668: allocbuf(BUF *bp, int fd, int blksize)
1.1 deraadt 1669: {
1670: size_t size;
1671: struct stat stb;
1672:
1.205 deraadt 1673: if (fstat(fd, &stb) == -1) {
1.1 deraadt 1674: run_err("fstat: %s", strerror(errno));
1675: return (0);
1676: }
1.187 deraadt 1677: size = ROUNDUP(stb.st_blksize, blksize);
1.95 markus 1678: if (size == 0)
1.18 markus 1679: size = blksize;
1.1 deraadt 1680: if (bp->cnt >= size)
1681: return (bp);
1.192 deraadt 1682: bp->buf = xrecallocarray(bp->buf, bp->cnt, size, 1);
1.1 deraadt 1683: bp->cnt = size;
1684: return (bp);
1685: }
1686:
1687: void
1.104 djm 1688: lostconn(int signo)
1.1 deraadt 1689: {
1690: if (!iamremote)
1.172 dtucker 1691: (void)write(STDERR_FILENO, "lost connection\n", 16);
1.74 markus 1692: if (signo)
1693: _exit(1);
1694: else
1695: exit(1);
1.4 aaron 1696: }
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