Annotation of src/usr.bin/ssh/scp.c, Revision 1.227
1.227 ! djm 1: /* $OpenBSD: scp.c,v 1.226 2021/08/09 23:44:32 djm Exp $ */
1.1 deraadt 2: /*
1.38 deraadt 3: * scp - secure remote copy. This is basically patched BSD rcp which
4: * uses ssh to do the data transfer (instead of using rcmd).
1.27 markus 5: *
1.38 deraadt 6: * NOTE: This version should NOT be suid root. (This uses ssh to
7: * do the transfer and ssh has the necessary privileges.)
1.27 markus 8: *
1.38 deraadt 9: * 1995 Timo Rinne <tri@iki.fi>, Tatu Ylonen <ylo@cs.hut.fi>
10: *
11: * As far as I am concerned, the code I have written for this software
12: * can be used freely for any purpose. Any derived versions of this
13: * software must be clearly marked as such, and if the derived work is
14: * incompatible with the protocol description in the RFC file, it must be
15: * called by a name other than "ssh" or "Secure Shell".
1.39 markus 16: */
1.38 deraadt 17: /*
1.60 deraadt 18: * Copyright (c) 1999 Theo de Raadt. All rights reserved.
19: * Copyright (c) 1999 Aaron Campbell. All rights reserved.
1.27 markus 20: *
1.38 deraadt 21: * Redistribution and use in source and binary forms, with or without
22: * modification, are permitted provided that the following conditions
23: * are met:
24: * 1. Redistributions of source code must retain the above copyright
25: * notice, this list of conditions and the following disclaimer.
26: * 2. Redistributions in binary form must reproduce the above copyright
27: * notice, this list of conditions and the following disclaimer in the
28: * documentation and/or other materials provided with the distribution.
1.27 markus 29: *
1.38 deraadt 30: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
31: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
32: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
33: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
34: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
35: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
36: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
37: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
38: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
39: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
40: */
1.1 deraadt 41:
42: /*
1.35 deraadt 43: * Parts from:
44: *
1.1 deraadt 45: * Copyright (c) 1983, 1990, 1992, 1993, 1995
46: * The Regents of the University of California. All rights reserved.
47: *
48: * Redistribution and use in source and binary forms, with or without
49: * modification, are permitted provided that the following conditions
50: * are met:
51: * 1. Redistributions of source code must retain the above copyright
52: * notice, this list of conditions and the following disclaimer.
53: * 2. Redistributions in binary form must reproduce the above copyright
54: * notice, this list of conditions and the following disclaimer in the
55: * documentation and/or other materials provided with the distribution.
1.103 millert 56: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 57: * may be used to endorse or promote products derived from this software
58: * without specific prior written permission.
59: *
60: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
61: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
62: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
63: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
64: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
65: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
66: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
67: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
68: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
69: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
70: * SUCH DAMAGE.
71: *
72: */
73:
1.132 stevesk 74: #include <sys/types.h>
1.161 djm 75: #include <sys/poll.h>
1.132 stevesk 76: #include <sys/wait.h>
1.134 stevesk 77: #include <sys/stat.h>
1.151 stevesk 78: #include <sys/time.h>
1.155 deraadt 79: #include <sys/uio.h>
1.131 stevesk 80:
1.135 stevesk 81: #include <ctype.h>
1.131 stevesk 82: #include <dirent.h>
1.147 stevesk 83: #include <errno.h>
1.144 stevesk 84: #include <fcntl.h>
1.202 djm 85: #include <fnmatch.h>
1.216 djm 86: #include <glob.h>
87: #include <libgen.h>
1.186 schwarze 88: #include <locale.h>
1.143 stevesk 89: #include <pwd.h>
1.133 stevesk 90: #include <signal.h>
1.146 stevesk 91: #include <stdarg.h>
1.189 millert 92: #include <stdint.h>
1.154 stevesk 93: #include <stdio.h>
1.153 stevesk 94: #include <stdlib.h>
1.150 stevesk 95: #include <string.h>
1.149 stevesk 96: #include <time.h>
1.148 stevesk 97: #include <unistd.h>
1.181 deraadt 98: #include <limits.h>
1.158 dtucker 99: #include <vis.h>
1.1 deraadt 100:
101: #include "xmalloc.h"
1.193 millert 102: #include "ssh.h"
1.51 markus 103: #include "atomicio.h"
1.50 markus 104: #include "pathnames.h"
1.51 markus 105: #include "log.h"
1.69 mouring 106: #include "misc.h"
1.97 fgsch 107: #include "progressmeter.h"
1.186 schwarze 108: #include "utf8.h"
1.1 deraadt 109:
1.216 djm 110: #include "sftp-common.h"
111: #include "sftp-client.h"
112:
1.161 djm 113: #define COPY_BUFLEN 16384
114:
1.216 djm 115: int do_cmd(char *program, char *host, char *remuser, int port, char *cmd,
1.219 djm 116: int *fdin, int *fdout, pid_t *pidp);
1.216 djm 117: int do_cmd2(char *host, char *remuser, int port, char *cmd,
118: int fdin, int fdout);
1.11 aaron 119:
1.70 mouring 120: /* Struct for addargs */
121: arglist args;
1.168 djm 122: arglist remote_remote_args;
1.41 markus 123:
1.99 markus 124: /* Bandwidth limit */
1.167 djm 125: long long limit_kbps = 0;
126: struct bwlimit bwlimit;
1.99 markus 127:
1.11 aaron 128: /* Name of current file being transferred. */
129: char *curfile;
1.4 aaron 130:
1.1 deraadt 131: /* This is set to non-zero to enable verbose mode. */
1.17 markus 132: int verbose_mode = 0;
1.216 djm 133: LogLevel log_level = SYSLOG_LEVEL_INFO;
1.1 deraadt 134:
1.6 aaron 135: /* This is set to zero if the progressmeter is not desired. */
136: int showprogress = 1;
137:
1.169 markus 138: /*
139: * This is set to non-zero if remote-remote copy should be piped
140: * through this process.
141: */
1.224 djm 142: int throughlocal = 0;
1.169 markus 143:
1.193 millert 144: /* Non-standard port to use for the ssh connection or -1. */
145: int sshport = -1;
146:
1.34 deraadt 147: /* This is the program to execute for the secured connection. ("ssh" or -S) */
1.50 markus 148: char *ssh_program = _PATH_SSH_PROGRAM;
1.34 deraadt 149:
1.92 markus 150: /* This is used to store the pid of ssh_program */
1.105 djm 151: pid_t do_cmd_pid = -1;
1.219 djm 152: pid_t do_cmd_pid2 = -1;
1.105 djm 153:
1.216 djm 154: /* Needed for sftp */
155: volatile sig_atomic_t interrupted = 0;
156:
157: int remote_glob(struct sftp_conn *, const char *, int,
158: int (*)(const char *, int), glob_t *); /* proto for sftp-glob.c */
159:
1.105 djm 160: static void
161: killchild(int signo)
162: {
1.119 dtucker 163: if (do_cmd_pid > 1) {
1.123 avsm 164: kill(do_cmd_pid, signo ? signo : SIGTERM);
1.119 dtucker 165: waitpid(do_cmd_pid, NULL, 0);
166: }
1.219 djm 167: if (do_cmd_pid2 > 1) {
168: kill(do_cmd_pid2, signo ? signo : SIGTERM);
169: waitpid(do_cmd_pid2, NULL, 0);
170: }
1.105 djm 171:
1.123 avsm 172: if (signo)
173: _exit(1);
174: exit(1);
1.105 djm 175: }
1.92 markus 176:
1.166 millert 177: static void
1.219 djm 178: suspone(int pid, int signo)
1.166 millert 179: {
180: int status;
181:
1.219 djm 182: if (pid > 1) {
183: kill(pid, signo);
184: while (waitpid(pid, &status, WUNTRACED) == -1 &&
1.166 millert 185: errno == EINTR)
186: ;
187: }
188: }
189:
1.219 djm 190: static void
191: suspchild(int signo)
192: {
193: suspone(do_cmd_pid, signo);
194: suspone(do_cmd_pid2, signo);
195: kill(getpid(), SIGSTOP);
196: }
197:
1.129 djm 198: static int
199: do_local_cmd(arglist *a)
200: {
201: u_int i;
202: int status;
203: pid_t pid;
204:
205: if (a->num == 0)
206: fatal("do_local_cmd: no arguments");
207:
208: if (verbose_mode) {
209: fprintf(stderr, "Executing:");
210: for (i = 0; i < a->num; i++)
1.186 schwarze 211: fmprintf(stderr, " %s", a->list[i]);
1.129 djm 212: fprintf(stderr, "\n");
213: }
214: if ((pid = fork()) == -1)
215: fatal("do_local_cmd: fork: %s", strerror(errno));
216:
217: if (pid == 0) {
218: execvp(a->list[0], a->list);
219: perror(a->list[0]);
220: exit(1);
221: }
222:
223: do_cmd_pid = pid;
1.207 dtucker 224: ssh_signal(SIGTERM, killchild);
225: ssh_signal(SIGINT, killchild);
226: ssh_signal(SIGHUP, killchild);
1.129 djm 227:
228: while (waitpid(pid, &status, 0) == -1)
229: if (errno != EINTR)
230: fatal("do_local_cmd: waitpid: %s", strerror(errno));
231:
232: do_cmd_pid = -1;
233:
234: if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
235: return (-1);
236:
237: return (0);
238: }
239:
1.20 markus 240: /*
241: * This function executes the given command as the specified user on the
242: * given host. This returns < 0 if execution fails, and >= 0 otherwise. This
243: * assigns the input and output file descriptors on success.
244: */
1.1 deraadt 245:
1.27 markus 246: int
1.216 djm 247: do_cmd(char *program, char *host, char *remuser, int port, char *cmd,
1.222 dtucker 248: int *fdin, int *fdout, pid_t *pid)
1.1 deraadt 249: {
1.18 markus 250: int pin[2], pout[2], reserved[2];
251:
252: if (verbose_mode)
1.186 schwarze 253: fmprintf(stderr,
1.78 deraadt 254: "Executing: program %s host %s, user %s, command %s\n",
1.216 djm 255: program, host,
1.78 deraadt 256: remuser ? remuser : "(unspecified)", cmd);
1.18 markus 257:
1.193 millert 258: if (port == -1)
259: port = sshport;
260:
1.20 markus 261: /*
262: * Reserve two descriptors so that the real pipes won't get
263: * descriptors 0 and 1 because that will screw up dup2 below.
264: */
1.205 deraadt 265: if (pipe(reserved) == -1)
1.142 markus 266: fatal("pipe: %s", strerror(errno));
1.18 markus 267:
268: /* Create a socket pair for communicating with ssh. */
1.205 deraadt 269: if (pipe(pin) == -1)
1.18 markus 270: fatal("pipe: %s", strerror(errno));
1.205 deraadt 271: if (pipe(pout) == -1)
1.18 markus 272: fatal("pipe: %s", strerror(errno));
273:
274: /* Free the reserved descriptors. */
275: close(reserved[0]);
276: close(reserved[1]);
1.166 millert 277:
1.207 dtucker 278: ssh_signal(SIGTSTP, suspchild);
279: ssh_signal(SIGTTIN, suspchild);
280: ssh_signal(SIGTTOU, suspchild);
1.18 markus 281:
1.106 nino 282: /* Fork a child to execute the command on the remote host using ssh. */
1.219 djm 283: *pid = fork();
284: if (*pid == 0) {
1.18 markus 285: /* Child. */
286: close(pin[1]);
287: close(pout[0]);
288: dup2(pin[0], 0);
289: dup2(pout[1], 1);
290: close(pin[0]);
291: close(pout[1]);
292:
1.216 djm 293: replacearg(&args, 0, "%s", program);
1.193 millert 294: if (port != -1) {
295: addargs(&args, "-p");
296: addargs(&args, "%d", port);
297: }
1.165 guenther 298: if (remuser != NULL) {
299: addargs(&args, "-l");
300: addargs(&args, "%s", remuser);
301: }
302: addargs(&args, "--");
1.70 mouring 303: addargs(&args, "%s", host);
304: addargs(&args, "%s", cmd);
1.18 markus 305:
1.216 djm 306: execvp(program, args.list);
307: perror(program);
1.18 markus 308: exit(1);
1.219 djm 309: } else if (*pid == -1) {
1.92 markus 310: fatal("fork: %s", strerror(errno));
1.18 markus 311: }
312: /* Parent. Close the other side, and return the local side. */
313: close(pin[0]);
314: *fdout = pin[1];
315: close(pout[1]);
316: *fdin = pout[0];
1.207 dtucker 317: ssh_signal(SIGTERM, killchild);
318: ssh_signal(SIGINT, killchild);
319: ssh_signal(SIGHUP, killchild);
1.18 markus 320: return 0;
1.1 deraadt 321: }
322:
1.169 markus 323: /*
1.196 djm 324: * This function executes a command similar to do_cmd(), but expects the
1.169 markus 325: * input and output descriptors to be setup by a previous call to do_cmd().
326: * This way the input and output of two commands can be connected.
327: */
328: int
1.219 djm 329: do_cmd2(char *host, char *remuser, int port, char *cmd,
330: int fdin, int fdout)
1.169 markus 331: {
1.219 djm 332: int status;
1.169 markus 333: pid_t pid;
334:
335: if (verbose_mode)
1.186 schwarze 336: fmprintf(stderr,
1.169 markus 337: "Executing: 2nd program %s host %s, user %s, command %s\n",
338: ssh_program, host,
339: remuser ? remuser : "(unspecified)", cmd);
340:
1.193 millert 341: if (port == -1)
342: port = sshport;
343:
1.169 markus 344: /* Fork a child to execute the command on the remote host using ssh. */
345: pid = fork();
346: if (pid == 0) {
347: dup2(fdin, 0);
348: dup2(fdout, 1);
349:
350: replacearg(&args, 0, "%s", ssh_program);
1.193 millert 351: if (port != -1) {
352: addargs(&args, "-p");
353: addargs(&args, "%d", port);
354: }
1.169 markus 355: if (remuser != NULL) {
356: addargs(&args, "-l");
357: addargs(&args, "%s", remuser);
358: }
1.208 markus 359: addargs(&args, "-oBatchMode=yes");
1.169 markus 360: addargs(&args, "--");
361: addargs(&args, "%s", host);
362: addargs(&args, "%s", cmd);
363:
364: execvp(ssh_program, args.list);
365: perror(ssh_program);
366: exit(1);
367: } else if (pid == -1) {
368: fatal("fork: %s", strerror(errno));
369: }
370: while (waitpid(pid, &status, 0) == -1)
371: if (errno != EINTR)
372: fatal("do_cmd2: waitpid: %s", strerror(errno));
373: return 0;
374: }
375:
1.1 deraadt 376: typedef struct {
1.124 djm 377: size_t cnt;
1.1 deraadt 378: char *buf;
379: } BUF;
380:
1.18 markus 381: BUF *allocbuf(BUF *, int, int);
382: void lostconn(int);
383: int okname(char *);
1.211 millert 384: void run_err(const char *,...)
385: __attribute__((__format__ (printf, 1, 2)))
386: __attribute__((__nonnull__ (1)));
387: int note_err(const char *,...)
388: __attribute__((__format__ (printf, 1, 2)));
1.18 markus 389: void verifydir(char *);
1.1 deraadt 390:
391: struct passwd *pwd;
1.18 markus 392: uid_t userid;
1.219 djm 393: int errs, remin, remout, remin2, remout2;
1.202 djm 394: int Tflag, pflag, iamremote, iamrecursive, targetshouldbedirectory;
1.1 deraadt 395:
396: #define CMDNEEDS 64
397: char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */
398:
1.216 djm 399: enum scp_mode_e {
400: MODE_SCP,
401: MODE_SFTP
402: };
403:
1.18 markus 404: int response(void);
405: void rsource(char *, struct stat *);
1.202 djm 406: void sink(int, char *[], const char *);
1.18 markus 407: void source(int, char *[]);
1.216 djm 408: void tolocal(int, char *[], enum scp_mode_e, char *sftp_direct);
409: void toremote(int, char *[], enum scp_mode_e, char *sftp_direct);
1.18 markus 410: void usage(void);
1.1 deraadt 411:
1.216 djm 412: void source_sftp(int, char *, char *, struct sftp_conn *, char **);
413: void sink_sftp(int, char *, const char *, struct sftp_conn *);
1.219 djm 414: void throughlocal_sftp(struct sftp_conn *, struct sftp_conn *,
415: char *, char *, char **);
1.216 djm 416:
1.1 deraadt 417: int
1.104 djm 418: main(int argc, char **argv)
1.1 deraadt 419: {
1.145 djm 420: int ch, fflag, tflag, status, n;
1.216 djm 421: char **newargv, *argv0;
1.167 djm 422: const char *errstr;
1.1 deraadt 423: extern char *optarg;
424: extern int optind;
1.224 djm 425: /* For now, keep SCP as default */
426: enum scp_mode_e mode = MODE_SCP;
1.216 djm 427: char *sftp_direct = NULL;
1.126 djm 428:
429: /* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */
430: sanitise_stdfd();
1.145 djm 431:
1.186 schwarze 432: setlocale(LC_CTYPE, "");
433:
1.145 djm 434: /* Copy argv, because we modify it */
1.216 djm 435: argv0 = argv[0];
1.187 deraadt 436: newargv = xcalloc(MAXIMUM(argc + 1, 1), sizeof(*newargv));
1.145 djm 437: for (n = 0; n < argc; n++)
438: newargv[n] = xstrdup(argv[n]);
439: argv = newargv;
1.1 deraadt 440:
1.218 djm 441: log_init(argv0, log_level, SYSLOG_FACILITY_USER, 1);
442:
1.129 djm 443: memset(&args, '\0', sizeof(args));
1.168 djm 444: memset(&remote_remote_args, '\0', sizeof(remote_remote_args));
445: args.list = remote_remote_args.list = NULL;
1.129 djm 446: addargs(&args, "%s", ssh_program);
1.70 mouring 447: addargs(&args, "-x");
1.168 djm 448: addargs(&args, "-oPermitLocalCommand=no");
449: addargs(&args, "-oClearAllForwardings=yes");
1.195 djm 450: addargs(&args, "-oRemoteCommand=none");
451: addargs(&args, "-oRequestTTY=no");
1.41 markus 452:
1.202 djm 453: fflag = Tflag = tflag = 0;
454: while ((ch = getopt(argc, argv,
1.224 djm 455: "12346ABCTdfpqrtvD:F:J:M:P:S:c:i:l:o:")) != -1) {
1.18 markus 456: switch (ch) {
457: /* User-visible flags. */
1.100 markus 458: case '1':
1.190 djm 459: fatal("SSH protocol v.1 is no longer supported");
460: break;
1.100 markus 461: case '2':
1.190 djm 462: /* Ignored */
463: break;
1.212 djm 464: case 'A':
1.23 markus 465: case '4':
1.41 markus 466: case '6':
467: case 'C':
1.70 mouring 468: addargs(&args, "-%c", ch);
1.168 djm 469: addargs(&remote_remote_args, "-%c", ch);
1.41 markus 470: break;
1.216 djm 471: case 'D':
472: sftp_direct = optarg;
473: break;
1.169 markus 474: case '3':
475: throughlocal = 1;
476: break;
1.41 markus 477: case 'o':
478: case 'c':
479: case 'i':
1.83 stevesk 480: case 'F':
1.199 tb 481: case 'J':
1.168 djm 482: addargs(&remote_remote_args, "-%c", ch);
483: addargs(&remote_remote_args, "%s", optarg);
1.165 guenther 484: addargs(&args, "-%c", ch);
485: addargs(&args, "%s", optarg);
1.23 markus 486: break;
1.41 markus 487: case 'P':
1.193 millert 488: sshport = a2port(optarg);
489: if (sshport <= 0)
490: fatal("bad port \"%s\"\n", optarg);
1.41 markus 491: break;
492: case 'B':
1.168 djm 493: addargs(&remote_remote_args, "-oBatchmode=yes");
494: addargs(&args, "-oBatchmode=yes");
1.23 markus 495: break;
1.224 djm 496: case 'M':
497: if (strcmp(optarg, "sftp") == 0)
498: mode = MODE_SFTP;
499: else if (strcmp(optarg, "scp") == 0)
500: mode = MODE_SCP;
501: else
502: usage();
503: break;
1.99 markus 504: case 'l':
1.167 djm 505: limit_kbps = strtonum(optarg, 1, 100 * 1024 * 1024,
506: &errstr);
507: if (errstr != NULL)
1.99 markus 508: usage();
1.167 djm 509: limit_kbps *= 1024; /* kbps */
510: bandwidth_limit_init(&bwlimit, limit_kbps, COPY_BUFLEN);
1.99 markus 511: break;
1.1 deraadt 512: case 'p':
513: pflag = 1;
514: break;
515: case 'r':
516: iamrecursive = 1;
517: break;
1.34 deraadt 518: case 'S':
1.41 markus 519: ssh_program = xstrdup(optarg);
520: break;
521: case 'v':
1.72 markus 522: addargs(&args, "-v");
1.168 djm 523: addargs(&remote_remote_args, "-v");
1.216 djm 524: if (verbose_mode == 0)
525: log_level = SYSLOG_LEVEL_DEBUG1;
526: else if (log_level < SYSLOG_LEVEL_DEBUG3)
527: log_level++;
1.41 markus 528: verbose_mode = 1;
529: break;
530: case 'q':
1.111 dtucker 531: addargs(&args, "-q");
1.168 djm 532: addargs(&remote_remote_args, "-q");
1.41 markus 533: showprogress = 0;
1.34 deraadt 534: break;
535:
1.18 markus 536: /* Server options. */
1.1 deraadt 537: case 'd':
538: targetshouldbedirectory = 1;
539: break;
1.18 markus 540: case 'f': /* "from" */
1.1 deraadt 541: iamremote = 1;
542: fflag = 1;
543: break;
1.18 markus 544: case 't': /* "to" */
1.1 deraadt 545: iamremote = 1;
546: tflag = 1;
547: break;
1.202 djm 548: case 'T':
549: Tflag = 1;
550: break;
1.1 deraadt 551: default:
552: usage();
553: }
1.202 djm 554: }
1.1 deraadt 555: argc -= optind;
556: argv += optind;
557:
1.216 djm 558: log_init(argv0, log_level, SYSLOG_FACILITY_USER, 1);
559:
1.212 djm 560: /* Do this last because we want the user to be able to override it */
561: addargs(&args, "-oForwardAgent=no");
562:
1.218 djm 563: if (iamremote)
564: mode = MODE_SCP;
1.216 djm 565:
1.1 deraadt 566: if ((pwd = getpwuid(userid = getuid())) == NULL)
1.108 deraadt 567: fatal("unknown user %u", (u_int) userid);
1.1 deraadt 568:
1.156 djm 569: if (!isatty(STDOUT_FILENO))
1.7 deraadt 570: showprogress = 0;
1.184 deraadt 571:
572: if (pflag) {
573: /* Cannot pledge: -p allows setuid/setgid files... */
574: } else {
575: if (pledge("stdio rpath wpath cpath fattr tty proc exec",
576: NULL) == -1) {
577: perror("pledge");
578: exit(1);
579: }
580: }
1.7 deraadt 581:
1.1 deraadt 582: remin = STDIN_FILENO;
583: remout = STDOUT_FILENO;
584:
1.52 stevesk 585: if (fflag) {
1.18 markus 586: /* Follow "protocol", send data. */
587: (void) response();
1.1 deraadt 588: source(argc, argv);
589: exit(errs != 0);
590: }
1.18 markus 591: if (tflag) {
592: /* Receive data. */
1.202 djm 593: sink(argc, argv, NULL);
1.1 deraadt 594: exit(errs != 0);
595: }
596: if (argc < 2)
597: usage();
598: if (argc > 2)
599: targetshouldbedirectory = 1;
600:
601: remin = remout = -1;
1.92 markus 602: do_cmd_pid = -1;
1.1 deraadt 603: /* Command to be executed on remote system using "ssh". */
1.55 deraadt 604: (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s",
605: verbose_mode ? " -v" : "",
1.35 deraadt 606: iamrecursive ? " -r" : "", pflag ? " -p" : "",
607: targetshouldbedirectory ? " -d" : "");
1.1 deraadt 608:
1.207 dtucker 609: (void) ssh_signal(SIGPIPE, lostconn);
1.1 deraadt 610:
1.193 millert 611: if (colon(argv[argc - 1])) /* Dest is remote host. */
1.216 djm 612: toremote(argc, argv, mode, sftp_direct);
1.1 deraadt 613: else {
614: if (targetshouldbedirectory)
615: verifydir(argv[argc - 1]);
1.216 djm 616: tolocal(argc, argv, mode, sftp_direct); /* Dest is local host. */
1.92 markus 617: }
618: /*
619: * Finally check the exit status of the ssh process, if one was forked
1.164 stevesk 620: * and no error has occurred yet
1.92 markus 621: */
622: if (do_cmd_pid != -1 && errs == 0) {
623: if (remin != -1)
624: (void) close(remin);
625: if (remout != -1)
626: (void) close(remout);
627: if (waitpid(do_cmd_pid, &status, 0) == -1)
628: errs = 1;
629: else {
630: if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
631: errs = 1;
632: }
1.1 deraadt 633: }
634: exit(errs != 0);
635: }
636:
1.167 djm 637: /* Callback from atomicio6 to update progress meter and limit bandwidth */
638: static int
639: scpio(void *_cnt, size_t s)
1.161 djm 640: {
1.167 djm 641: off_t *cnt = (off_t *)_cnt;
642:
643: *cnt += s;
1.201 dtucker 644: refresh_progress_meter(0);
1.167 djm 645: if (limit_kbps > 0)
646: bandwidth_limit(&bwlimit, s);
647: return 0;
1.161 djm 648: }
649:
1.176 guenther 650: static int
651: do_times(int fd, int verb, const struct stat *sb)
652: {
653: /* strlen(2^64) == 20; strlen(10^6) == 7 */
654: char buf[(20 + 7 + 2) * 2 + 2];
655:
656: (void)snprintf(buf, sizeof(buf), "T%llu 0 %llu 0\n",
657: (unsigned long long) (sb->st_mtime < 0 ? 0 : sb->st_mtime),
658: (unsigned long long) (sb->st_atime < 0 ? 0 : sb->st_atime));
659: if (verb) {
660: fprintf(stderr, "File mtime %lld atime %lld\n",
661: (long long)sb->st_mtime, (long long)sb->st_atime);
662: fprintf(stderr, "Sending file timestamps: %s", buf);
663: }
664: (void) atomicio(vwrite, fd, buf, strlen(buf));
665: return (response());
666: }
667:
1.194 millert 668: static int
669: parse_scp_uri(const char *uri, char **userp, char **hostp, int *portp,
1.214 djm 670: char **pathp)
1.194 millert 671: {
672: int r;
673:
674: r = parse_uri("scp", uri, userp, hostp, portp, pathp);
675: if (r == 0 && *pathp == NULL)
676: *pathp = xstrdup(".");
677: return r;
678: }
679:
1.204 djm 680: /* Appends a string to an array; returns 0 on success, -1 on alloc failure */
681: static int
682: append(char *cp, char ***ap, size_t *np)
683: {
684: char **tmp;
685:
686: if ((tmp = reallocarray(*ap, *np + 1, sizeof(*tmp))) == NULL)
687: return -1;
688: tmp[(*np)] = cp;
689: (*np)++;
690: *ap = tmp;
691: return 0;
692: }
693:
694: /*
695: * Finds the start and end of the first brace pair in the pattern.
696: * returns 0 on success or -1 for invalid patterns.
697: */
698: static int
699: find_brace(const char *pattern, int *startp, int *endp)
700: {
701: int i;
702: int in_bracket, brace_level;
703:
704: *startp = *endp = -1;
705: in_bracket = brace_level = 0;
706: for (i = 0; i < INT_MAX && *endp < 0 && pattern[i] != '\0'; i++) {
707: switch (pattern[i]) {
708: case '\\':
709: /* skip next character */
710: if (pattern[i + 1] != '\0')
711: i++;
712: break;
713: case '[':
714: in_bracket = 1;
715: break;
716: case ']':
717: in_bracket = 0;
718: break;
719: case '{':
720: if (in_bracket)
721: break;
722: if (pattern[i + 1] == '}') {
723: /* Protect a single {}, for find(1), like csh */
724: i++; /* skip */
725: break;
726: }
727: if (*startp == -1)
728: *startp = i;
729: brace_level++;
730: break;
731: case '}':
732: if (in_bracket)
733: break;
734: if (*startp < 0) {
735: /* Unbalanced brace */
736: return -1;
737: }
738: if (--brace_level <= 0)
739: *endp = i;
740: break;
741: }
742: }
743: /* unbalanced brackets/braces */
744: if (*endp < 0 && (*startp >= 0 || in_bracket))
745: return -1;
746: return 0;
747: }
748:
749: /*
750: * Assembles and records a successfully-expanded pattern, returns -1 on
751: * alloc failure.
752: */
753: static int
754: emit_expansion(const char *pattern, int brace_start, int brace_end,
755: int sel_start, int sel_end, char ***patternsp, size_t *npatternsp)
756: {
757: char *cp;
758: int o = 0, tail_len = strlen(pattern + brace_end + 1);
759:
760: if ((cp = malloc(brace_start + (sel_end - sel_start) +
761: tail_len + 1)) == NULL)
762: return -1;
763:
764: /* Pattern before initial brace */
765: if (brace_start > 0) {
766: memcpy(cp, pattern, brace_start);
767: o = brace_start;
768: }
769: /* Current braced selection */
770: if (sel_end - sel_start > 0) {
771: memcpy(cp + o, pattern + sel_start,
772: sel_end - sel_start);
773: o += sel_end - sel_start;
774: }
775: /* Remainder of pattern after closing brace */
776: if (tail_len > 0) {
777: memcpy(cp + o, pattern + brace_end + 1, tail_len);
778: o += tail_len;
779: }
780: cp[o] = '\0';
781: if (append(cp, patternsp, npatternsp) != 0) {
782: free(cp);
783: return -1;
784: }
785: return 0;
786: }
787:
788: /*
789: * Expand the first encountered brace in pattern, appending the expanded
790: * patterns it yielded to the *patternsp array.
791: *
792: * Returns 0 on success or -1 on allocation failure.
793: *
794: * Signals whether expansion was performed via *expanded and whether
795: * pattern was invalid via *invalid.
796: */
797: static int
798: brace_expand_one(const char *pattern, char ***patternsp, size_t *npatternsp,
799: int *expanded, int *invalid)
800: {
801: int i;
802: int in_bracket, brace_start, brace_end, brace_level;
803: int sel_start, sel_end;
804:
805: *invalid = *expanded = 0;
806:
807: if (find_brace(pattern, &brace_start, &brace_end) != 0) {
808: *invalid = 1;
809: return 0;
810: } else if (brace_start == -1)
811: return 0;
812:
813: in_bracket = brace_level = 0;
814: for (i = sel_start = brace_start + 1; i < brace_end; i++) {
815: switch (pattern[i]) {
816: case '{':
817: if (in_bracket)
818: break;
819: brace_level++;
820: break;
821: case '}':
822: if (in_bracket)
823: break;
824: brace_level--;
825: break;
826: case '[':
827: in_bracket = 1;
828: break;
829: case ']':
830: in_bracket = 0;
831: break;
832: case '\\':
833: if (i < brace_end - 1)
834: i++; /* skip */
835: break;
836: }
837: if (pattern[i] == ',' || i == brace_end - 1) {
838: if (in_bracket || brace_level > 0)
839: continue;
840: /* End of a selection, emit an expanded pattern */
841:
842: /* Adjust end index for last selection */
843: sel_end = (i == brace_end - 1) ? brace_end : i;
844: if (emit_expansion(pattern, brace_start, brace_end,
845: sel_start, sel_end, patternsp, npatternsp) != 0)
846: return -1;
847: /* move on to the next selection */
848: sel_start = i + 1;
849: continue;
850: }
851: }
852: if (in_bracket || brace_level > 0) {
853: *invalid = 1;
854: return 0;
855: }
856: /* success */
857: *expanded = 1;
858: return 0;
859: }
860:
861: /* Expand braces from pattern. Returns 0 on success, -1 on failure */
862: static int
863: brace_expand(const char *pattern, char ***patternsp, size_t *npatternsp)
864: {
865: char *cp, *cp2, **active = NULL, **done = NULL;
866: size_t i, nactive = 0, ndone = 0;
867: int ret = -1, invalid = 0, expanded = 0;
868:
869: *patternsp = NULL;
870: *npatternsp = 0;
871:
872: /* Start the worklist with the original pattern */
873: if ((cp = strdup(pattern)) == NULL)
874: return -1;
875: if (append(cp, &active, &nactive) != 0) {
876: free(cp);
877: return -1;
878: }
879: while (nactive > 0) {
880: cp = active[nactive - 1];
881: nactive--;
882: if (brace_expand_one(cp, &active, &nactive,
883: &expanded, &invalid) == -1) {
884: free(cp);
885: goto fail;
886: }
887: if (invalid)
1.213 djm 888: fatal_f("invalid brace pattern \"%s\"", cp);
1.204 djm 889: if (expanded) {
890: /*
891: * Current entry expanded to new entries on the
892: * active list; discard the progenitor pattern.
893: */
894: free(cp);
895: continue;
896: }
897: /*
898: * Pattern did not expand; append the finename component to
899: * the completed list
900: */
901: if ((cp2 = strrchr(cp, '/')) != NULL)
902: *cp2++ = '\0';
903: else
904: cp2 = cp;
905: if (append(xstrdup(cp2), &done, &ndone) != 0) {
906: free(cp);
907: goto fail;
908: }
909: free(cp);
910: }
911: /* success */
912: *patternsp = done;
913: *npatternsp = ndone;
914: done = NULL;
915: ndone = 0;
916: ret = 0;
917: fail:
918: for (i = 0; i < nactive; i++)
919: free(active[i]);
920: free(active);
921: for (i = 0; i < ndone; i++)
922: free(done[i]);
923: free(done);
924: return ret;
925: }
926:
1.216 djm 927: static struct sftp_conn *
1.219 djm 928: do_sftp_connect(char *host, char *user, int port, char *sftp_direct,
929: int *reminp, int *remoutp, int *pidp)
1.216 djm 930: {
931: if (sftp_direct == NULL) {
932: addargs(&args, "-s");
933: if (do_cmd(ssh_program, host, user, port, "sftp",
1.219 djm 934: reminp, remoutp, pidp) < 0)
1.216 djm 935: return NULL;
936:
937: } else {
938: args.list = NULL;
939: addargs(&args, "sftp-server");
940: if (do_cmd(sftp_direct, host, NULL, -1, "sftp",
1.219 djm 941: reminp, remoutp, pidp) < 0)
1.216 djm 942: return NULL;
943: }
1.219 djm 944: return do_init(*reminp, *remoutp, 32768, 64, limit_kbps);
1.216 djm 945: }
946:
1.1 deraadt 947: void
1.216 djm 948: toremote(int argc, char **argv, enum scp_mode_e mode, char *sftp_direct)
1.1 deraadt 949: {
1.193 millert 950: char *suser = NULL, *host = NULL, *src = NULL;
951: char *bp, *tuser, *thost, *targ;
1.216 djm 952: char *remote_path = NULL;
1.193 millert 953: int sport = -1, tport = -1;
1.219 djm 954: struct sftp_conn *conn = NULL, *conn2 = NULL;
1.129 djm 955: arglist alist;
1.219 djm 956: int i, r, status;
1.168 djm 957: u_int j;
1.129 djm 958:
959: memset(&alist, '\0', sizeof(alist));
960: alist.list = NULL;
1.1 deraadt 961:
1.193 millert 962: /* Parse target */
1.194 millert 963: r = parse_scp_uri(argv[argc - 1], &tuser, &thost, &tport, &targ);
964: if (r == -1) {
965: fmprintf(stderr, "%s: invalid uri\n", argv[argc - 1]);
966: ++errs;
967: goto out;
968: }
1.193 millert 969: if (r != 0) {
970: if (parse_user_host_path(argv[argc - 1], &tuser, &thost,
1.194 millert 971: &targ) == -1) {
972: fmprintf(stderr, "%s: invalid target\n", argv[argc - 1]);
973: ++errs;
1.193 millert 974: goto out;
1.194 millert 975: }
1.129 djm 976: }
977:
1.193 millert 978: /* Parse source files */
1.1 deraadt 979: for (i = 0; i < argc - 1; i++) {
1.193 millert 980: free(suser);
981: free(host);
982: free(src);
1.194 millert 983: r = parse_scp_uri(argv[i], &suser, &host, &sport, &src);
984: if (r == -1) {
985: fmprintf(stderr, "%s: invalid uri\n", argv[i]);
986: ++errs;
987: continue;
988: }
989: if (r != 0) {
1.193 millert 990: parse_user_host_path(argv[i], &suser, &host, &src);
1.194 millert 991: }
1.193 millert 992: if (suser != NULL && !okname(suser)) {
993: ++errs;
994: continue;
995: }
996: if (host && throughlocal) { /* extended remote to remote */
1.219 djm 997: if (mode == MODE_SFTP) {
998: if (remin == -1) {
999: /* Connect to dest now */
1000: conn = do_sftp_connect(thost, tuser,
1001: tport, sftp_direct,
1002: &remin, &remout, &do_cmd_pid);
1003: if (conn == NULL) {
1004: fatal("Unable to open "
1005: "destination connection");
1006: }
1007: debug3_f("origin in %d out %d pid %ld",
1008: remin, remout, (long)do_cmd_pid);
1009: }
1010: /*
1011: * XXX remember suser/host/sport and only
1012: * reconnect if they change between arguments.
1013: * would save reconnections for cases like
1014: * scp -3 hosta:/foo hosta:/bar hostb:
1015: */
1016: /* Connect to origin now */
1017: conn2 = do_sftp_connect(host, suser,
1018: sport, sftp_direct,
1019: &remin2, &remout2, &do_cmd_pid2);
1020: if (conn2 == NULL) {
1021: fatal("Unable to open "
1022: "source connection");
1023: }
1024: debug3_f("destination in %d out %d pid %ld",
1025: remin2, remout2, (long)do_cmd_pid2);
1026: throughlocal_sftp(conn2, conn, src, targ,
1027: &remote_path);
1028: (void) close(remin2);
1029: (void) close(remout2);
1030: remin2 = remout2 = -1;
1031: if (waitpid(do_cmd_pid2, &status, 0) == -1)
1032: ++errs;
1033: else if (!WIFEXITED(status) ||
1034: WEXITSTATUS(status) != 0)
1035: ++errs;
1036: do_cmd_pid2 = -1;
1037: continue;
1038: } else {
1039: xasprintf(&bp, "%s -f %s%s", cmd,
1040: *src == '-' ? "-- " : "", src);
1041: if (do_cmd(ssh_program, host, suser, sport,
1042: bp, &remin, &remout, &do_cmd_pid) < 0)
1043: exit(1);
1044: free(bp);
1045: xasprintf(&bp, "%s -t %s%s", cmd,
1046: *targ == '-' ? "-- " : "", targ);
1047: if (do_cmd2(thost, tuser, tport, bp,
1048: remin, remout) < 0)
1049: exit(1);
1050: free(bp);
1051: (void) close(remin);
1052: (void) close(remout);
1053: remin = remout = -1;
1054: }
1.193 millert 1055: } else if (host) { /* standard remote to remote */
1.215 djm 1056: /*
1057: * Second remote user is passed to first remote side
1058: * via scp command-line. Ensure it contains no obvious
1059: * shell characters.
1060: */
1061: if (tuser != NULL && !okname(tuser)) {
1062: ++errs;
1063: continue;
1064: }
1.193 millert 1065: if (tport != -1 && tport != SSH_DEFAULT_PORT) {
1066: /* This would require the remote support URIs */
1067: fatal("target port not supported with two "
1068: "remote hosts without the -3 option");
1069: }
1070:
1.129 djm 1071: freeargs(&alist);
1072: addargs(&alist, "%s", ssh_program);
1073: addargs(&alist, "-x");
1.168 djm 1074: addargs(&alist, "-oClearAllForwardings=yes");
1.129 djm 1075: addargs(&alist, "-n");
1.168 djm 1076: for (j = 0; j < remote_remote_args.num; j++) {
1077: addargs(&alist, "%s",
1078: remote_remote_args.list[j]);
1079: }
1.193 millert 1080:
1081: if (sport != -1) {
1082: addargs(&alist, "-p");
1083: addargs(&alist, "%d", sport);
1084: }
1085: if (suser) {
1.129 djm 1086: addargs(&alist, "-l");
1087: addargs(&alist, "%s", suser);
1.23 markus 1088: }
1.165 guenther 1089: addargs(&alist, "--");
1.129 djm 1090: addargs(&alist, "%s", host);
1091: addargs(&alist, "%s", cmd);
1092: addargs(&alist, "%s", src);
1093: addargs(&alist, "%s%s%s:%s",
1094: tuser ? tuser : "", tuser ? "@" : "",
1095: thost, targ);
1096: if (do_local_cmd(&alist) != 0)
1.109 markus 1097: errs = 1;
1.18 markus 1098: } else { /* local to remote */
1.216 djm 1099: if (mode == MODE_SFTP) {
1100: if (remin == -1) {
1101: /* Connect to remote now */
1102: conn = do_sftp_connect(thost, tuser,
1.219 djm 1103: tport, sftp_direct,
1104: &remin, &remout, &do_cmd_pid);
1.216 djm 1105: if (conn == NULL) {
1106: fatal("Unable to open sftp "
1107: "connection");
1108: }
1109: }
1110:
1111: /* The protocol */
1112: source_sftp(1, argv[i], targ, conn,
1113: &remote_path);
1114: continue;
1115: }
1116: /* SCP */
1.1 deraadt 1117: if (remin == -1) {
1.171 djm 1118: xasprintf(&bp, "%s -t %s%s", cmd,
1119: *targ == '-' ? "-- " : "", targ);
1.216 djm 1120: if (do_cmd(ssh_program, thost, tuser, tport, bp,
1.219 djm 1121: &remin, &remout, &do_cmd_pid) < 0)
1.18 markus 1122: exit(1);
1.1 deraadt 1123: if (response() < 0)
1124: exit(1);
1.173 djm 1125: free(bp);
1.1 deraadt 1126: }
1.18 markus 1127: source(1, argv + i);
1.1 deraadt 1128: }
1129: }
1.193 millert 1130: out:
1.216 djm 1131: if (mode == MODE_SFTP) {
1132: free(remote_path);
1133: free(conn);
1134: }
1.193 millert 1135: free(tuser);
1136: free(thost);
1137: free(targ);
1138: free(suser);
1139: free(host);
1140: free(src);
1.1 deraadt 1141: }
1142:
1143: void
1.216 djm 1144: tolocal(int argc, char **argv, enum scp_mode_e mode, char *sftp_direct)
1.1 deraadt 1145: {
1.193 millert 1146: char *bp, *host = NULL, *src = NULL, *suser = NULL;
1.129 djm 1147: arglist alist;
1.216 djm 1148: struct sftp_conn *conn = NULL;
1.193 millert 1149: int i, r, sport = -1;
1.129 djm 1150:
1151: memset(&alist, '\0', sizeof(alist));
1152: alist.list = NULL;
1.1 deraadt 1153:
1154: for (i = 0; i < argc - 1; i++) {
1.193 millert 1155: free(suser);
1156: free(host);
1157: free(src);
1.194 millert 1158: r = parse_scp_uri(argv[i], &suser, &host, &sport, &src);
1.193 millert 1159: if (r == -1) {
1.194 millert 1160: fmprintf(stderr, "%s: invalid uri\n", argv[i]);
1.193 millert 1161: ++errs;
1162: continue;
1163: }
1164: if (r != 0)
1165: parse_user_host_path(argv[i], &suser, &host, &src);
1166: if (suser != NULL && !okname(suser)) {
1167: ++errs;
1168: continue;
1169: }
1170: if (!host) { /* Local to local. */
1.129 djm 1171: freeargs(&alist);
1172: addargs(&alist, "%s", _PATH_CP);
1173: if (iamrecursive)
1174: addargs(&alist, "-r");
1175: if (pflag)
1176: addargs(&alist, "-p");
1.165 guenther 1177: addargs(&alist, "--");
1.129 djm 1178: addargs(&alist, "%s", argv[i]);
1179: addargs(&alist, "%s", argv[argc-1]);
1180: if (do_local_cmd(&alist))
1.1 deraadt 1181: ++errs;
1182: continue;
1183: }
1.193 millert 1184: /* Remote to local. */
1.216 djm 1185: if (mode == MODE_SFTP) {
1.219 djm 1186: conn = do_sftp_connect(host, suser, sport,
1187: sftp_direct, &remin, &remout, &do_cmd_pid);
1.216 djm 1188: if (conn == NULL) {
1189: error("Couldn't make sftp connection "
1190: "to server");
1191: ++errs;
1192: continue;
1193: }
1194:
1195: /* The protocol */
1196: sink_sftp(1, argv[argc - 1], src, conn);
1197:
1198: free(conn);
1199: (void) close(remin);
1200: (void) close(remout);
1201: remin = remout = -1;
1202: continue;
1203: }
1204: /* SCP */
1.171 djm 1205: xasprintf(&bp, "%s -f %s%s",
1206: cmd, *src == '-' ? "-- " : "", src);
1.219 djm 1207: if (do_cmd(ssh_program, host, suser, sport, bp,
1208: &remin, &remout, &do_cmd_pid) < 0) {
1.173 djm 1209: free(bp);
1.18 markus 1210: ++errs;
1211: continue;
1.1 deraadt 1212: }
1.173 djm 1213: free(bp);
1.202 djm 1214: sink(1, argv + argc - 1, src);
1.18 markus 1215: (void) close(remin);
1.1 deraadt 1216: remin = remout = -1;
1217: }
1.193 millert 1218: free(suser);
1219: free(host);
1220: free(src);
1.1 deraadt 1221: }
1222:
1.226 djm 1223: /* Canonicalise a remote path, handling ~ by assuming cwd is the homedir */
1224: static char *
1.227 ! djm 1225: absolute_remote_path(struct sftp_conn *conn, const char *path,
! 1226: const char *remote_path)
1.226 djm 1227: {
1228: char *ret;
1229:
1.227 ! djm 1230: if (can_expand_path(conn))
! 1231: return do_expand_path(conn, path);
! 1232:
1.226 djm 1233: /* Handle ~ prefixed paths */
1234: if (*path != '~')
1235: ret = xstrdup(path);
1236: else {
1237: if (strcmp(path, "~") == 0)
1238: ret = xstrdup("");
1239: else if (strncmp(path, "~/", 2) == 0)
1240: ret = xstrdup(path + 2);
1241: else {
1242: /* XXX could be supported with protocol extension */
1243: error("~user paths are not currently supported");
1244: return NULL;
1245: }
1246: }
1247: return make_absolute(ret, remote_path);
1248: }
1249:
1.1 deraadt 1250: void
1.216 djm 1251: source_sftp(int argc, char *src, char *targ,
1252: struct sftp_conn *conn, char **remote_path)
1253: {
1254: char *target = NULL, *filename = NULL, *abs_dst = NULL;
1255: int target_is_dir;
1256:
1257: if (*remote_path == NULL) {
1258: *remote_path = do_realpath(conn, ".");
1259: if (*remote_path == NULL)
1260: fatal("Unable to determine remote working directory");
1261: }
1262:
1263: if ((filename = basename(src)) == NULL)
1264: fatal("basename %s: %s", src, strerror(errno));
1265:
1266: /*
1267: * No need to glob here - the local shell already took care of
1268: * the expansions
1269: */
1.227 ! djm 1270: if ((target = absolute_remote_path(conn, targ, *remote_path)) == NULL)
1.226 djm 1271: cleanup_exit(255);
1.216 djm 1272: target_is_dir = remote_is_dir(conn, target);
1273: if (targetshouldbedirectory && !target_is_dir) {
1274: fatal("Target is not a directory, but more files selected "
1275: "for upload");
1276: }
1277: if (target_is_dir)
1278: abs_dst = path_append(target, filename);
1279: else {
1280: abs_dst = target;
1281: target = NULL;
1282: }
1283: debug3_f("copying local %s to remote %s", src, abs_dst);
1284:
1285: if (local_is_dir(src) && iamrecursive) {
1.220 djm 1286: if (upload_dir(conn, src, abs_dst, pflag,
1.221 djm 1287: SFTP_PROGRESS_ONLY, 0, 0, 1) != 0) {
1.216 djm 1288: fatal("failed to upload directory %s to %s",
1289: src, abs_dst);
1290: }
1291: } else if (do_upload(conn, src, abs_dst, pflag, 0, 0) != 0)
1292: fatal("failed to upload file %s to %s", src, abs_dst);
1293:
1294: free(abs_dst);
1295: free(target);
1296: }
1297:
1298: void
1.104 djm 1299: source(int argc, char **argv)
1.1 deraadt 1300: {
1301: struct stat stb;
1302: static BUF buffer;
1303: BUF *bp;
1.163 dtucker 1304: off_t i, statbytes;
1.180 djm 1305: size_t amt, nr;
1.125 dtucker 1306: int fd = -1, haderr, indx;
1.206 dtucker 1307: char *last, *name, buf[PATH_MAX + 128], encname[PATH_MAX];
1.65 deraadt 1308: int len;
1.1 deraadt 1309:
1310: for (indx = 0; indx < argc; ++indx) {
1.18 markus 1311: name = argv[indx];
1.11 aaron 1312: statbytes = 0;
1.65 deraadt 1313: len = strlen(name);
1314: while (len > 1 && name[len-1] == '/')
1315: name[--len] = '\0';
1.205 deraadt 1316: if ((fd = open(name, O_RDONLY|O_NONBLOCK, 0)) == -1)
1.158 dtucker 1317: goto syserr;
1.85 markus 1318: if (strchr(name, '\n') != NULL) {
1.158 dtucker 1319: strnvis(encname, name, sizeof(encname), VIS_NL);
1320: name = encname;
1.85 markus 1321: }
1.205 deraadt 1322: if (fstat(fd, &stb) == -1) {
1.1 deraadt 1323: syserr: run_err("%s: %s", name, strerror(errno));
1324: goto next;
1325: }
1.163 dtucker 1326: if (stb.st_size < 0) {
1327: run_err("%s: %s", name, "Negative file size");
1328: goto next;
1329: }
1.157 djm 1330: unset_nonblock(fd);
1.1 deraadt 1331: switch (stb.st_mode & S_IFMT) {
1332: case S_IFREG:
1333: break;
1334: case S_IFDIR:
1335: if (iamrecursive) {
1336: rsource(name, &stb);
1337: goto next;
1338: }
1339: /* FALLTHROUGH */
1340: default:
1341: run_err("%s: not a regular file", name);
1342: goto next;
1343: }
1344: if ((last = strrchr(name, '/')) == NULL)
1345: last = name;
1346: else
1347: ++last;
1.11 aaron 1348: curfile = last;
1.1 deraadt 1349: if (pflag) {
1.176 guenther 1350: if (do_times(remout, verbose_mode, &stb) < 0)
1.1 deraadt 1351: goto next;
1352: }
1353: #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
1.61 markus 1354: snprintf(buf, sizeof buf, "C%04o %lld %s\n",
1.47 markus 1355: (u_int) (stb.st_mode & FILEMODEMASK),
1.62 markus 1356: (long long)stb.st_size, last);
1.186 schwarze 1357: if (verbose_mode)
1358: fmprintf(stderr, "Sending file modes: %s", buf);
1.107 deraadt 1359: (void) atomicio(vwrite, remout, buf, strlen(buf));
1.1 deraadt 1360: if (response() < 0)
1361: goto next;
1.161 djm 1362: if ((bp = allocbuf(&buffer, fd, COPY_BUFLEN)) == NULL) {
1.127 deraadt 1363: next: if (fd != -1) {
1364: (void) close(fd);
1365: fd = -1;
1366: }
1.1 deraadt 1367: continue;
1368: }
1.97 fgsch 1369: if (showprogress)
1370: start_progress_meter(curfile, stb.st_size, &statbytes);
1.161 djm 1371: set_nonblock(remout);
1.1 deraadt 1372: for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
1373: amt = bp->cnt;
1.163 dtucker 1374: if (i + (off_t)amt > stb.st_size)
1.1 deraadt 1375: amt = stb.st_size - i;
1376: if (!haderr) {
1.180 djm 1377: if ((nr = atomicio(read, fd,
1378: bp->buf, amt)) != amt) {
1.122 avsm 1379: haderr = errno;
1.180 djm 1380: memset(bp->buf + nr, 0, amt - nr);
1381: }
1.1 deraadt 1382: }
1.161 djm 1383: /* Keep writing after error to retain sync */
1384: if (haderr) {
1385: (void)atomicio(vwrite, remout, bp->buf, amt);
1.180 djm 1386: memset(bp->buf, 0, amt);
1.161 djm 1387: continue;
1.1 deraadt 1388: }
1.167 djm 1389: if (atomicio6(vwrite, remout, bp->buf, amt, scpio,
1.161 djm 1390: &statbytes) != amt)
1391: haderr = errno;
1.1 deraadt 1392: }
1.161 djm 1393: unset_nonblock(remout);
1.4 aaron 1394:
1.127 deraadt 1395: if (fd != -1) {
1.205 deraadt 1396: if (close(fd) == -1 && !haderr)
1.127 deraadt 1397: haderr = errno;
1398: fd = -1;
1399: }
1.1 deraadt 1400: if (!haderr)
1.107 deraadt 1401: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 1402: else
1403: run_err("%s: %s", name, strerror(haderr));
1.18 markus 1404: (void) response();
1.185 dtucker 1405: if (showprogress)
1406: stop_progress_meter();
1.1 deraadt 1407: }
1408: }
1409:
1410: void
1.104 djm 1411: rsource(char *name, struct stat *statp)
1.1 deraadt 1412: {
1413: DIR *dirp;
1414: struct dirent *dp;
1.181 deraadt 1415: char *last, *vect[1], path[PATH_MAX];
1.1 deraadt 1416:
1417: if (!(dirp = opendir(name))) {
1418: run_err("%s: %s", name, strerror(errno));
1419: return;
1420: }
1421: last = strrchr(name, '/');
1.183 mmcc 1422: if (last == NULL)
1.1 deraadt 1423: last = name;
1424: else
1425: last++;
1426: if (pflag) {
1.176 guenther 1427: if (do_times(remout, verbose_mode, statp) < 0) {
1.1 deraadt 1428: closedir(dirp);
1429: return;
1430: }
1431: }
1.55 deraadt 1432: (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n",
1.47 markus 1433: (u_int) (statp->st_mode & FILEMODEMASK), 0, last);
1.18 markus 1434: if (verbose_mode)
1.186 schwarze 1435: fmprintf(stderr, "Entering directory: %s", path);
1.107 deraadt 1436: (void) atomicio(vwrite, remout, path, strlen(path));
1.1 deraadt 1437: if (response() < 0) {
1438: closedir(dirp);
1439: return;
1440: }
1.63 stevesk 1441: while ((dp = readdir(dirp)) != NULL) {
1.1 deraadt 1442: if (dp->d_ino == 0)
1443: continue;
1444: if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
1445: continue;
1446: if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) {
1447: run_err("%s/%s: name too long", name, dp->d_name);
1448: continue;
1449: }
1.55 deraadt 1450: (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name);
1.1 deraadt 1451: vect[0] = path;
1452: source(1, vect);
1453: }
1.18 markus 1454: (void) closedir(dirp);
1.107 deraadt 1455: (void) atomicio(vwrite, remout, "E\n", 2);
1.18 markus 1456: (void) response();
1.1 deraadt 1457: }
1458:
1.216 djm 1459: void
1460: sink_sftp(int argc, char *dst, const char *src, struct sftp_conn *conn)
1461: {
1462: char *abs_src = NULL;
1463: char *abs_dst = NULL;
1464: glob_t g;
1465: char *filename, *tmp = NULL, *remote_path = NULL;
1466: int i, r, err = 0;
1467:
1.226 djm 1468: memset(&g, 0, sizeof(g));
1.216 djm 1469: /*
1470: * Here, we need remote glob as SFTP can not depend on remote shell
1471: * expansions
1472: */
1473:
1474: remote_path = do_realpath(conn, ".");
1475: if (remote_path == NULL) {
1476: error("Could not obtain remote working directory");
1477: /* TODO - gracefully degrade by using relative paths ? */
1478: err = -1;
1479: goto out;
1480: }
1481:
1.227 ! djm 1482: if ((abs_src = absolute_remote_path(conn, src, remote_path)) == NULL) {
1.226 djm 1483: err = -1;
1484: goto out;
1485: }
1.216 djm 1486: free(remote_path);
1487:
1488: debug3_f("copying remote %s to local %s", abs_src, dst);
1489: if ((r = remote_glob(conn, abs_src, GLOB_MARK, NULL, &g)) != 0) {
1490: if (r == GLOB_NOSPACE)
1491: error("Too many glob matches for \"%s\".", abs_src);
1492: else
1493: error("File \"%s\" not found.", abs_src);
1494: err = -1;
1495: goto out;
1496: }
1497:
1498: if (g.gl_matchc > 1 && !local_is_dir(dst)) {
1499: error("Multiple files match pattern, but destination "
1500: "\"%s\" is not a directory", dst);
1501: err = -1;
1502: goto out;
1503: }
1504:
1505: for (i = 0; g.gl_pathv[i] && !interrupted; i++) {
1506: tmp = xstrdup(g.gl_pathv[i]);
1507: if ((filename = basename(tmp)) == NULL) {
1508: error("basename %s: %s", tmp, strerror(errno));
1509: err = -1;
1510: goto out;
1511: }
1512:
1513: if (local_is_dir(dst))
1514: abs_dst = path_append(dst, filename);
1515: else
1516: abs_dst = xstrdup(dst);
1517:
1518: debug("Fetching %s to %s\n", g.gl_pathv[i], abs_dst);
1519: if (globpath_is_dir(g.gl_pathv[i]) && iamrecursive) {
1520: if (download_dir(conn, g.gl_pathv[i], abs_dst, NULL,
1.221 djm 1521: pflag, SFTP_PROGRESS_ONLY, 0, 0, 1) == -1)
1.216 djm 1522: err = -1;
1523: } else {
1524: if (do_download(conn, g.gl_pathv[i], abs_dst, NULL,
1525: pflag, 0, 0) == -1)
1526: err = -1;
1527: }
1528: free(abs_dst);
1529: abs_dst = NULL;
1.217 dtucker 1530: free(tmp);
1531: tmp = NULL;
1.216 djm 1532: }
1533:
1534: out:
1535: free(abs_src);
1.217 dtucker 1536: free(tmp);
1.216 djm 1537: globfree(&g);
1538: if (err == -1) {
1539: fatal("Failed to download file '%s'", src);
1540: }
1541: }
1542:
1543:
1.189 millert 1544: #define TYPE_OVERFLOW(type, val) \
1545: ((sizeof(type) == 4 && (val) > INT32_MAX) || \
1546: (sizeof(type) == 8 && (val) > INT64_MAX) || \
1547: (sizeof(type) != 4 && sizeof(type) != 8))
1548:
1.1 deraadt 1549: void
1.202 djm 1550: sink(int argc, char **argv, const char *src)
1.1 deraadt 1551: {
1552: static BUF buffer;
1553: struct stat stb;
1554: BUF *bp;
1.122 avsm 1555: off_t i;
1.124 djm 1556: size_t j, count;
1.140 deraadt 1557: int amt, exists, first, ofd;
1558: mode_t mode, omode, mask;
1.97 fgsch 1559: off_t size, statbytes;
1.176 guenther 1560: unsigned long long ull;
1.209 djm 1561: int setimes, targisdir, wrerr;
1.186 schwarze 1562: char ch, *cp, *np, *targ, *why, *vect[1], buf[2048], visbuf[2048];
1.204 djm 1563: char **patterns = NULL;
1564: size_t n, npatterns = 0;
1.40 markus 1565: struct timeval tv[2];
1.1 deraadt 1566:
1.66 stevesk 1567: #define atime tv[0]
1568: #define mtime tv[1]
1.118 deraadt 1569: #define SCREWUP(str) { why = str; goto screwup; }
1.1 deraadt 1570:
1.189 millert 1571: if (TYPE_OVERFLOW(time_t, 0) || TYPE_OVERFLOW(off_t, 0))
1572: SCREWUP("Unexpected off_t/time_t size");
1573:
1.1 deraadt 1574: setimes = targisdir = 0;
1575: mask = umask(0);
1576: if (!pflag)
1.18 markus 1577: (void) umask(mask);
1.1 deraadt 1578: if (argc != 1) {
1579: run_err("ambiguous target");
1580: exit(1);
1581: }
1582: targ = *argv;
1583: if (targetshouldbedirectory)
1584: verifydir(targ);
1.18 markus 1585:
1.107 deraadt 1586: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 1587: if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
1588: targisdir = 1;
1.202 djm 1589: if (src != NULL && !iamrecursive && !Tflag) {
1590: /*
1591: * Prepare to try to restrict incoming filenames to match
1592: * the requested destination file glob.
1593: */
1.204 djm 1594: if (brace_expand(src, &patterns, &npatterns) != 0)
1.213 djm 1595: fatal_f("could not expand pattern");
1.202 djm 1596: }
1.1 deraadt 1597: for (first = 1;; first = 0) {
1598: cp = buf;
1.122 avsm 1599: if (atomicio(read, remin, cp, 1) != 1)
1.204 djm 1600: goto done;
1.1 deraadt 1601: if (*cp++ == '\n')
1602: SCREWUP("unexpected <newline>");
1603: do {
1.30 deraadt 1604: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 1605: SCREWUP("lost connection");
1606: *cp++ = ch;
1607: } while (cp < &buf[sizeof(buf) - 1] && ch != '\n');
1608: *cp = 0;
1.114 markus 1609: if (verbose_mode)
1.186 schwarze 1610: fmprintf(stderr, "Sink: %s", buf);
1.1 deraadt 1611:
1612: if (buf[0] == '\01' || buf[0] == '\02') {
1.186 schwarze 1613: if (iamremote == 0) {
1614: (void) snmprintf(visbuf, sizeof(visbuf),
1615: NULL, "%s", buf + 1);
1.107 deraadt 1616: (void) atomicio(vwrite, STDERR_FILENO,
1.186 schwarze 1617: visbuf, strlen(visbuf));
1618: }
1.1 deraadt 1619: if (buf[0] == '\02')
1620: exit(1);
1621: ++errs;
1622: continue;
1623: }
1624: if (buf[0] == 'E') {
1.107 deraadt 1625: (void) atomicio(vwrite, remout, "", 1);
1.204 djm 1626: goto done;
1.1 deraadt 1627: }
1628: if (ch == '\n')
1629: *--cp = 0;
1630:
1631: cp = buf;
1632: if (*cp == 'T') {
1633: setimes++;
1634: cp++;
1.176 guenther 1635: if (!isdigit((unsigned char)*cp))
1636: SCREWUP("mtime.sec not present");
1637: ull = strtoull(cp, &cp, 10);
1.66 stevesk 1638: if (!cp || *cp++ != ' ')
1.1 deraadt 1639: SCREWUP("mtime.sec not delimited");
1.189 millert 1640: if (TYPE_OVERFLOW(time_t, ull))
1.176 guenther 1641: setimes = 0; /* out of range */
1642: mtime.tv_sec = ull;
1.66 stevesk 1643: mtime.tv_usec = strtol(cp, &cp, 10);
1.176 guenther 1644: if (!cp || *cp++ != ' ' || mtime.tv_usec < 0 ||
1645: mtime.tv_usec > 999999)
1.1 deraadt 1646: SCREWUP("mtime.usec not delimited");
1.176 guenther 1647: if (!isdigit((unsigned char)*cp))
1648: SCREWUP("atime.sec not present");
1649: ull = strtoull(cp, &cp, 10);
1.66 stevesk 1650: if (!cp || *cp++ != ' ')
1.1 deraadt 1651: SCREWUP("atime.sec not delimited");
1.189 millert 1652: if (TYPE_OVERFLOW(time_t, ull))
1.176 guenther 1653: setimes = 0; /* out of range */
1654: atime.tv_sec = ull;
1.66 stevesk 1655: atime.tv_usec = strtol(cp, &cp, 10);
1.176 guenther 1656: if (!cp || *cp++ != '\0' || atime.tv_usec < 0 ||
1657: atime.tv_usec > 999999)
1.1 deraadt 1658: SCREWUP("atime.usec not delimited");
1.107 deraadt 1659: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 1660: continue;
1661: }
1662: if (*cp != 'C' && *cp != 'D') {
1663: /*
1664: * Check for the case "rcp remote:foo\* local:bar".
1665: * In this case, the line "No match." can be returned
1666: * by the shell before the rcp command on the remote is
1667: * executed so the ^Aerror_message convention isn't
1668: * followed.
1669: */
1670: if (first) {
1671: run_err("%s", cp);
1672: exit(1);
1673: }
1674: SCREWUP("expected control record");
1675: }
1676: mode = 0;
1677: for (++cp; cp < buf + 5; cp++) {
1678: if (*cp < '0' || *cp > '7')
1679: SCREWUP("bad mode");
1680: mode = (mode << 3) | (*cp - '0');
1681: }
1.197 dtucker 1682: if (!pflag)
1683: mode &= ~mask;
1.1 deraadt 1684: if (*cp++ != ' ')
1685: SCREWUP("mode not delimited");
1686:
1.188 millert 1687: if (!isdigit((unsigned char)*cp))
1688: SCREWUP("size not present");
1689: ull = strtoull(cp, &cp, 10);
1690: if (!cp || *cp++ != ' ')
1.1 deraadt 1691: SCREWUP("size not delimited");
1.189 millert 1692: if (TYPE_OVERFLOW(off_t, ull))
1.188 millert 1693: SCREWUP("size out of range");
1694: size = (off_t)ull;
1695:
1.198 djm 1696: if (*cp == '\0' || strchr(cp, '/') != NULL ||
1697: strcmp(cp, ".") == 0 || strcmp(cp, "..") == 0) {
1.114 markus 1698: run_err("error: unexpected filename: %s", cp);
1699: exit(1);
1700: }
1.204 djm 1701: if (npatterns > 0) {
1702: for (n = 0; n < npatterns; n++) {
1703: if (fnmatch(patterns[n], cp, 0) == 0)
1704: break;
1705: }
1706: if (n >= npatterns)
1707: SCREWUP("filename does not match request");
1708: }
1.1 deraadt 1709: if (targisdir) {
1710: static char *namebuf;
1.124 djm 1711: static size_t cursize;
1.1 deraadt 1712: size_t need;
1713:
1714: need = strlen(targ) + strlen(cp) + 250;
1.55 deraadt 1715: if (need > cursize) {
1.173 djm 1716: free(namebuf);
1.18 markus 1717: namebuf = xmalloc(need);
1.55 deraadt 1718: cursize = need;
1719: }
1720: (void) snprintf(namebuf, need, "%s%s%s", targ,
1.88 mouring 1721: strcmp(targ, "/") ? "/" : "", cp);
1.1 deraadt 1722: np = namebuf;
1723: } else
1724: np = targ;
1.12 aaron 1725: curfile = cp;
1.1 deraadt 1726: exists = stat(np, &stb) == 0;
1727: if (buf[0] == 'D') {
1728: int mod_flag = pflag;
1.114 markus 1729: if (!iamrecursive)
1730: SCREWUP("received directory without -r");
1.1 deraadt 1731: if (exists) {
1732: if (!S_ISDIR(stb.st_mode)) {
1733: errno = ENOTDIR;
1734: goto bad;
1735: }
1736: if (pflag)
1.18 markus 1737: (void) chmod(np, mode);
1.1 deraadt 1738: } else {
1.214 djm 1739: /* Handle copying from a read-only directory */
1.1 deraadt 1740: mod_flag = 1;
1.205 deraadt 1741: if (mkdir(np, mode | S_IRWXU) == -1)
1.1 deraadt 1742: goto bad;
1743: }
1.58 danh 1744: vect[0] = xstrdup(np);
1.202 djm 1745: sink(1, vect, src);
1.1 deraadt 1746: if (setimes) {
1747: setimes = 0;
1.210 djm 1748: (void) utimes(vect[0], tv);
1.1 deraadt 1749: }
1750: if (mod_flag)
1.59 deraadt 1751: (void) chmod(vect[0], mode);
1.173 djm 1752: free(vect[0]);
1.1 deraadt 1753: continue;
1754: }
1755: omode = mode;
1.174 dtucker 1756: mode |= S_IWUSR;
1.205 deraadt 1757: if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) == -1) {
1.1 deraadt 1758: bad: run_err("%s: %s", np, strerror(errno));
1759: continue;
1760: }
1.107 deraadt 1761: (void) atomicio(vwrite, remout, "", 1);
1.161 djm 1762: if ((bp = allocbuf(&buffer, ofd, COPY_BUFLEN)) == NULL) {
1.18 markus 1763: (void) close(ofd);
1.1 deraadt 1764: continue;
1765: }
1766: cp = bp->buf;
1.209 djm 1767: wrerr = 0;
1.7 deraadt 1768:
1.209 djm 1769: /*
1770: * NB. do not use run_err() unless immediately followed by
1771: * exit() below as it may send a spurious reply that might
1772: * desyncronise us from the peer. Use note_err() instead.
1773: */
1.12 aaron 1774: statbytes = 0;
1.97 fgsch 1775: if (showprogress)
1776: start_progress_meter(curfile, size, &statbytes);
1.161 djm 1777: set_nonblock(remin);
1778: for (count = i = 0; i < size; i += bp->cnt) {
1779: amt = bp->cnt;
1.1 deraadt 1780: if (i + amt > size)
1781: amt = size - i;
1782: count += amt;
1783: do {
1.167 djm 1784: j = atomicio6(read, remin, cp, amt,
1785: scpio, &statbytes);
1.122 avsm 1786: if (j == 0) {
1.161 djm 1787: run_err("%s", j != EPIPE ?
1788: strerror(errno) :
1.63 stevesk 1789: "dropped connection");
1.1 deraadt 1790: exit(1);
1791: }
1792: amt -= j;
1793: cp += j;
1794: } while (amt > 0);
1.112 djm 1795:
1.1 deraadt 1796: if (count == bp->cnt) {
1797: /* Keep reading so we stay sync'd up. */
1.209 djm 1798: if (!wrerr) {
1.122 avsm 1799: if (atomicio(vwrite, ofd, bp->buf,
1800: count) != count) {
1.209 djm 1801: note_err("%s: %s", np,
1802: strerror(errno));
1803: wrerr = 1;
1.1 deraadt 1804: }
1805: }
1806: count = 0;
1807: cp = bp->buf;
1808: }
1809: }
1.161 djm 1810: unset_nonblock(remin);
1.209 djm 1811: if (count != 0 && !wrerr &&
1.122 avsm 1812: atomicio(vwrite, ofd, bp->buf, count) != count) {
1.209 djm 1813: note_err("%s: %s", np, strerror(errno));
1814: wrerr = 1;
1.1 deraadt 1815: }
1.209 djm 1816: if (!wrerr && (!exists || S_ISREG(stb.st_mode)) &&
1817: ftruncate(ofd, size) != 0)
1818: note_err("%s: truncate: %s", np, strerror(errno));
1.1 deraadt 1819: if (pflag) {
1820: if (exists || omode != mode)
1.116 dtucker 1821: if (fchmod(ofd, omode)) {
1.209 djm 1822: note_err("%s: set mode: %s",
1.63 stevesk 1823: np, strerror(errno));
1.116 dtucker 1824: }
1.1 deraadt 1825: } else {
1826: if (!exists && omode != mode)
1.116 dtucker 1827: if (fchmod(ofd, omode & ~mask)) {
1.209 djm 1828: note_err("%s: set mode: %s",
1.63 stevesk 1829: np, strerror(errno));
1.116 dtucker 1830: }
1.1 deraadt 1831: }
1.209 djm 1832: if (close(ofd) == -1)
1.211 millert 1833: note_err("%s: close: %s", np, strerror(errno));
1.18 markus 1834: (void) response();
1.185 dtucker 1835: if (showprogress)
1836: stop_progress_meter();
1.209 djm 1837: if (setimes && !wrerr) {
1.1 deraadt 1838: setimes = 0;
1.205 deraadt 1839: if (utimes(np, tv) == -1) {
1.209 djm 1840: note_err("%s: set times: %s",
1.63 stevesk 1841: np, strerror(errno));
1.1 deraadt 1842: }
1843: }
1.209 djm 1844: /* If no error was noted then signal success for this file */
1845: if (note_err(NULL) == 0)
1.107 deraadt 1846: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 1847: }
1.204 djm 1848: done:
1849: for (n = 0; n < npatterns; n++)
1850: free(patterns[n]);
1851: free(patterns);
1852: return;
1.1 deraadt 1853: screwup:
1.204 djm 1854: for (n = 0; n < npatterns; n++)
1855: free(patterns[n]);
1856: free(patterns);
1.1 deraadt 1857: run_err("protocol error: %s", why);
1858: exit(1);
1.219 djm 1859: }
1860:
1861: void
1862: throughlocal_sftp(struct sftp_conn *from, struct sftp_conn *to,
1863: char *src, char *targ, char **to_remote_path)
1864: {
1865: char *target = NULL, *filename = NULL, *abs_dst = NULL;
1866: char *abs_src = NULL, *tmp = NULL, *from_remote_path;
1867: glob_t g;
1868: int i, r, targetisdir, err = 0;
1869:
1870: if (*to_remote_path == NULL) {
1871: *to_remote_path = do_realpath(to, ".");
1872: if (*to_remote_path == NULL) {
1873: fatal("Unable to determine destination remote "
1874: "working directory");
1875: }
1876: }
1877:
1878: if ((from_remote_path = do_realpath(from, ".")) == NULL) {
1879: fatal("Unable to determine source remote "
1880: "working directory");
1881: }
1882:
1883: if ((filename = basename(src)) == NULL)
1884: fatal("basename %s: %s", src, strerror(errno));
1885:
1.227 ! djm 1886: if ((abs_src = absolute_remote_path(from, src,
! 1887: from_remote_path)) == NULL ||
! 1888: (target = absolute_remote_path(to, targ, *to_remote_path)) == NULL)
1.226 djm 1889: cleanup_exit(255);
1.219 djm 1890: free(from_remote_path);
1891: memset(&g, 0, sizeof(g));
1892:
1893: targetisdir = remote_is_dir(to, target);
1894: if (!targetisdir && targetshouldbedirectory) {
1895: error("Destination path \"%s\" is not a directory", target);
1896: err = -1;
1897: goto out;
1898: }
1899:
1900: debug3_f("copying remote %s to remote %s", abs_src, target);
1901: if ((r = remote_glob(from, abs_src, GLOB_MARK, NULL, &g)) != 0) {
1902: if (r == GLOB_NOSPACE)
1903: error("Too many glob matches for \"%s\".", abs_src);
1904: else
1905: error("File \"%s\" not found.", abs_src);
1906: err = -1;
1907: goto out;
1908: }
1909:
1910: for (i = 0; g.gl_pathv[i] && !interrupted; i++) {
1911: tmp = xstrdup(g.gl_pathv[i]);
1912: if ((filename = basename(tmp)) == NULL) {
1913: error("basename %s: %s", tmp, strerror(errno));
1914: err = -1;
1915: goto out;
1916: }
1917:
1918: if (targetisdir)
1919: abs_dst = path_append(target, filename);
1920: else
1921: abs_dst = xstrdup(target);
1922:
1923: debug("Fetching %s to %s\n", g.gl_pathv[i], abs_dst);
1924: if (globpath_is_dir(g.gl_pathv[i]) && iamrecursive) {
1925: if (crossload_dir(from, to, g.gl_pathv[i], abs_dst,
1.221 djm 1926: NULL, pflag, SFTP_PROGRESS_ONLY, 1) == -1)
1.219 djm 1927: err = -1;
1928: } else {
1929: if (do_crossload(from, to, g.gl_pathv[i], abs_dst, NULL,
1930: pflag) == -1)
1931: err = -1;
1932: }
1933: free(abs_dst);
1934: abs_dst = NULL;
1935: free(tmp);
1936: tmp = NULL;
1937: }
1938:
1939: out:
1940: free(abs_src);
1941: free(abs_dst);
1942: free(target);
1943: free(tmp);
1944: globfree(&g);
1945: if (err == -1)
1946: fatal("Failed to download file '%s'", src);
1.1 deraadt 1947: }
1948:
1949: int
1.86 itojun 1950: response(void)
1.1 deraadt 1951: {
1.186 schwarze 1952: char ch, *cp, resp, rbuf[2048], visbuf[2048];
1.1 deraadt 1953:
1.30 deraadt 1954: if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp))
1.1 deraadt 1955: lostconn(0);
1956:
1957: cp = rbuf;
1.18 markus 1958: switch (resp) {
1959: case 0: /* ok */
1.1 deraadt 1960: return (0);
1961: default:
1962: *cp++ = resp;
1963: /* FALLTHROUGH */
1.18 markus 1964: case 1: /* error, followed by error msg */
1965: case 2: /* fatal error, "" */
1.1 deraadt 1966: do {
1.30 deraadt 1967: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 1968: lostconn(0);
1969: *cp++ = ch;
1970: } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n');
1971:
1.186 schwarze 1972: if (!iamremote) {
1973: cp[-1] = '\0';
1974: (void) snmprintf(visbuf, sizeof(visbuf),
1975: NULL, "%s\n", rbuf);
1976: (void) atomicio(vwrite, STDERR_FILENO,
1977: visbuf, strlen(visbuf));
1978: }
1.1 deraadt 1979: ++errs;
1980: if (resp == 1)
1981: return (-1);
1982: exit(1);
1983: }
1984: /* NOTREACHED */
1985: }
1986:
1987: void
1.86 itojun 1988: usage(void)
1.1 deraadt 1989: {
1.83 stevesk 1990: (void) fprintf(stderr,
1.224 djm 1991: "usage: scp [-346ABCpqrTv] [-c cipher] [-D sftp_server_path] [-F ssh_config]\n"
1992: " [-i identity_file] [-J destination] [-l limit] [-M scp|sftp]\n"
1993: " [-o ssh_option] [-P port] [-S program] source ... target\n");
1.1 deraadt 1994: exit(1);
1995: }
1996:
1997: void
1.18 markus 1998: run_err(const char *fmt,...)
1.1 deraadt 1999: {
2000: static FILE *fp;
2001: va_list ap;
2002:
2003: ++errs;
1.136 biorn 2004: if (fp != NULL || (remout != -1 && (fp = fdopen(remout, "w")))) {
2005: (void) fprintf(fp, "%c", 0x01);
2006: (void) fprintf(fp, "scp: ");
2007: va_start(ap, fmt);
2008: (void) vfprintf(fp, fmt, ap);
2009: va_end(ap);
2010: (void) fprintf(fp, "\n");
2011: (void) fflush(fp);
2012: }
1.18 markus 2013:
2014: if (!iamremote) {
1.73 markus 2015: va_start(ap, fmt);
1.186 schwarze 2016: vfmprintf(stderr, fmt, ap);
1.73 markus 2017: va_end(ap);
1.18 markus 2018: fprintf(stderr, "\n");
2019: }
1.209 djm 2020: }
2021:
2022: /*
2023: * Notes a sink error for sending at the end of a file transfer. Returns 0 if
2024: * no error has been noted or -1 otherwise. Use note_err(NULL) to flush
2025: * any active error at the end of the transfer.
2026: */
2027: int
2028: note_err(const char *fmt, ...)
2029: {
2030: static char *emsg;
2031: va_list ap;
2032:
2033: /* Replay any previously-noted error */
2034: if (fmt == NULL) {
2035: if (emsg == NULL)
2036: return 0;
2037: run_err("%s", emsg);
2038: free(emsg);
2039: emsg = NULL;
2040: return -1;
2041: }
2042:
2043: errs++;
2044: /* Prefer first-noted error */
2045: if (emsg != NULL)
2046: return -1;
2047:
2048: va_start(ap, fmt);
2049: vasnmprintf(&emsg, INT_MAX, NULL, fmt, ap);
2050: va_end(ap);
2051: return -1;
1.1 deraadt 2052: }
2053:
2054: void
1.104 djm 2055: verifydir(char *cp)
1.1 deraadt 2056: {
2057: struct stat stb;
2058:
2059: if (!stat(cp, &stb)) {
2060: if (S_ISDIR(stb.st_mode))
2061: return;
2062: errno = ENOTDIR;
2063: }
2064: run_err("%s: %s", cp, strerror(errno));
1.123 avsm 2065: killchild(0);
1.1 deraadt 2066: }
2067:
2068: int
1.104 djm 2069: okname(char *cp0)
1.1 deraadt 2070: {
2071: int c;
2072: char *cp;
2073:
2074: cp = cp0;
2075: do {
1.75 deraadt 2076: c = (int)*cp;
1.1 deraadt 2077: if (c & 0200)
2078: goto bad;
1.179 deraadt 2079: if (!isalpha(c) && !isdigit((unsigned char)c)) {
1.101 markus 2080: switch (c) {
2081: case '\'':
2082: case '"':
2083: case '`':
2084: case ' ':
2085: case '#':
2086: goto bad;
2087: default:
2088: break;
2089: }
2090: }
1.1 deraadt 2091: } while (*++cp);
2092: return (1);
2093:
1.186 schwarze 2094: bad: fmprintf(stderr, "%s: invalid user name\n", cp0);
1.1 deraadt 2095: return (0);
2096: }
2097:
2098: BUF *
1.104 djm 2099: allocbuf(BUF *bp, int fd, int blksize)
1.1 deraadt 2100: {
2101: size_t size;
2102: struct stat stb;
2103:
1.205 deraadt 2104: if (fstat(fd, &stb) == -1) {
1.1 deraadt 2105: run_err("fstat: %s", strerror(errno));
2106: return (0);
2107: }
1.187 deraadt 2108: size = ROUNDUP(stb.st_blksize, blksize);
1.95 markus 2109: if (size == 0)
1.18 markus 2110: size = blksize;
1.1 deraadt 2111: if (bp->cnt >= size)
2112: return (bp);
1.192 deraadt 2113: bp->buf = xrecallocarray(bp->buf, bp->cnt, size, 1);
1.1 deraadt 2114: bp->cnt = size;
2115: return (bp);
2116: }
2117:
2118: void
1.104 djm 2119: lostconn(int signo)
1.1 deraadt 2120: {
2121: if (!iamremote)
1.172 dtucker 2122: (void)write(STDERR_FILENO, "lost connection\n", 16);
1.74 markus 2123: if (signo)
2124: _exit(1);
2125: else
2126: exit(1);
1.225 djm 2127: }
2128:
2129: void
2130: cleanup_exit(int i)
2131: {
2132: if (remin > 0)
2133: close(remin);
2134: if (remout > 0)
2135: close(remout);
2136: if (remin2 > 0)
2137: close(remin2);
2138: if (remout2 > 0)
2139: close(remout2);
2140: if (do_cmd_pid > 0)
2141: waitpid(do_cmd_pid, NULL, 0);
2142: if (do_cmd_pid2 > 0)
2143: waitpid(do_cmd_pid2, NULL, 0);
2144: exit(i);
1.4 aaron 2145: }
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