Annotation of src/usr.bin/ssh/scp.c, Revision 1.251
1.251 ! jmc 1: /* $OpenBSD: scp.c,v 1.250 2022/12/16 03:40:03 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>
1.250 djm 99: #include <util.h>
1.158 dtucker 100: #include <vis.h>
1.1 deraadt 101:
102: #include "xmalloc.h"
1.193 millert 103: #include "ssh.h"
1.51 markus 104: #include "atomicio.h"
1.50 markus 105: #include "pathnames.h"
1.51 markus 106: #include "log.h"
1.69 mouring 107: #include "misc.h"
1.97 fgsch 108: #include "progressmeter.h"
1.186 schwarze 109: #include "utf8.h"
1.243 djm 110: #include "sftp.h"
1.1 deraadt 111:
1.216 djm 112: #include "sftp-common.h"
113: #include "sftp-client.h"
114:
1.161 djm 115: #define COPY_BUFLEN 16384
116:
1.231 naddy 117: int do_cmd(char *, char *, char *, int, int, char *, int *, int *, pid_t *);
118: int do_cmd2(char *, char *, int, char *, int, int);
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: */
1.229 djm 142: int throughlocal = 1;
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:
1.250 djm 154: /* SFTP copy parameters */
155: size_t sftp_copy_buflen;
156: size_t sftp_nrequests;
157:
1.216 djm 158: /* Needed for sftp */
159: volatile sig_atomic_t interrupted = 0;
160:
161: int remote_glob(struct sftp_conn *, const char *, int,
162: int (*)(const char *, int), glob_t *); /* proto for sftp-glob.c */
163:
1.105 djm 164: static void
165: killchild(int signo)
166: {
1.119 dtucker 167: if (do_cmd_pid > 1) {
1.123 avsm 168: kill(do_cmd_pid, signo ? signo : SIGTERM);
1.119 dtucker 169: waitpid(do_cmd_pid, NULL, 0);
170: }
1.219 djm 171: if (do_cmd_pid2 > 1) {
172: kill(do_cmd_pid2, signo ? signo : SIGTERM);
173: waitpid(do_cmd_pid2, NULL, 0);
174: }
1.105 djm 175:
1.123 avsm 176: if (signo)
177: _exit(1);
178: exit(1);
1.105 djm 179: }
1.92 markus 180:
1.166 millert 181: static void
1.219 djm 182: suspone(int pid, int signo)
1.166 millert 183: {
184: int status;
185:
1.219 djm 186: if (pid > 1) {
187: kill(pid, signo);
188: while (waitpid(pid, &status, WUNTRACED) == -1 &&
1.166 millert 189: errno == EINTR)
190: ;
191: }
192: }
193:
1.219 djm 194: static void
195: suspchild(int signo)
196: {
197: suspone(do_cmd_pid, signo);
198: suspone(do_cmd_pid2, signo);
199: kill(getpid(), SIGSTOP);
200: }
201:
1.129 djm 202: static int
203: do_local_cmd(arglist *a)
204: {
205: u_int i;
206: int status;
207: pid_t pid;
208:
209: if (a->num == 0)
210: fatal("do_local_cmd: no arguments");
211:
212: if (verbose_mode) {
213: fprintf(stderr, "Executing:");
214: for (i = 0; i < a->num; i++)
1.186 schwarze 215: fmprintf(stderr, " %s", a->list[i]);
1.129 djm 216: fprintf(stderr, "\n");
217: }
218: if ((pid = fork()) == -1)
219: fatal("do_local_cmd: fork: %s", strerror(errno));
220:
221: if (pid == 0) {
222: execvp(a->list[0], a->list);
223: perror(a->list[0]);
224: exit(1);
225: }
226:
227: do_cmd_pid = pid;
1.207 dtucker 228: ssh_signal(SIGTERM, killchild);
229: ssh_signal(SIGINT, killchild);
230: ssh_signal(SIGHUP, killchild);
1.129 djm 231:
232: while (waitpid(pid, &status, 0) == -1)
233: if (errno != EINTR)
234: fatal("do_local_cmd: waitpid: %s", strerror(errno));
235:
236: do_cmd_pid = -1;
237:
238: if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
239: return (-1);
240:
241: return (0);
242: }
243:
1.20 markus 244: /*
245: * This function executes the given command as the specified user on the
246: * given host. This returns < 0 if execution fails, and >= 0 otherwise. This
247: * assigns the input and output file descriptors on success.
248: */
1.1 deraadt 249:
1.27 markus 250: int
1.231 naddy 251: do_cmd(char *program, char *host, char *remuser, int port, int subsystem,
252: char *cmd, int *fdin, int *fdout, pid_t *pid)
1.1 deraadt 253: {
1.18 markus 254: int pin[2], pout[2], reserved[2];
255:
256: if (verbose_mode)
1.186 schwarze 257: fmprintf(stderr,
1.78 deraadt 258: "Executing: program %s host %s, user %s, command %s\n",
1.216 djm 259: program, host,
1.78 deraadt 260: remuser ? remuser : "(unspecified)", cmd);
1.18 markus 261:
1.193 millert 262: if (port == -1)
263: port = sshport;
264:
1.20 markus 265: /*
266: * Reserve two descriptors so that the real pipes won't get
267: * descriptors 0 and 1 because that will screw up dup2 below.
268: */
1.205 deraadt 269: if (pipe(reserved) == -1)
1.142 markus 270: fatal("pipe: %s", strerror(errno));
1.18 markus 271:
272: /* Create a socket pair for communicating with ssh. */
1.205 deraadt 273: if (pipe(pin) == -1)
1.18 markus 274: fatal("pipe: %s", strerror(errno));
1.205 deraadt 275: if (pipe(pout) == -1)
1.18 markus 276: fatal("pipe: %s", strerror(errno));
277:
278: /* Free the reserved descriptors. */
279: close(reserved[0]);
280: close(reserved[1]);
1.166 millert 281:
1.207 dtucker 282: ssh_signal(SIGTSTP, suspchild);
283: ssh_signal(SIGTTIN, suspchild);
284: ssh_signal(SIGTTOU, suspchild);
1.18 markus 285:
1.106 nino 286: /* Fork a child to execute the command on the remote host using ssh. */
1.219 djm 287: *pid = fork();
288: if (*pid == 0) {
1.18 markus 289: /* Child. */
290: close(pin[1]);
291: close(pout[0]);
292: dup2(pin[0], 0);
293: dup2(pout[1], 1);
294: close(pin[0]);
295: close(pout[1]);
296:
1.216 djm 297: replacearg(&args, 0, "%s", program);
1.193 millert 298: if (port != -1) {
299: addargs(&args, "-p");
300: addargs(&args, "%d", port);
301: }
1.165 guenther 302: if (remuser != NULL) {
303: addargs(&args, "-l");
304: addargs(&args, "%s", remuser);
305: }
1.231 naddy 306: if (subsystem)
307: addargs(&args, "-s");
1.165 guenther 308: addargs(&args, "--");
1.70 mouring 309: addargs(&args, "%s", host);
310: addargs(&args, "%s", cmd);
1.18 markus 311:
1.216 djm 312: execvp(program, args.list);
313: perror(program);
1.18 markus 314: exit(1);
1.219 djm 315: } else if (*pid == -1) {
1.92 markus 316: fatal("fork: %s", strerror(errno));
1.18 markus 317: }
318: /* Parent. Close the other side, and return the local side. */
319: close(pin[0]);
320: *fdout = pin[1];
321: close(pout[1]);
322: *fdin = pout[0];
1.207 dtucker 323: ssh_signal(SIGTERM, killchild);
324: ssh_signal(SIGINT, killchild);
325: ssh_signal(SIGHUP, killchild);
1.18 markus 326: return 0;
1.1 deraadt 327: }
328:
1.169 markus 329: /*
1.196 djm 330: * This function executes a command similar to do_cmd(), but expects the
1.169 markus 331: * input and output descriptors to be setup by a previous call to do_cmd().
332: * This way the input and output of two commands can be connected.
333: */
334: int
1.219 djm 335: do_cmd2(char *host, char *remuser, int port, char *cmd,
336: int fdin, int fdout)
1.169 markus 337: {
1.219 djm 338: int status;
1.169 markus 339: pid_t pid;
340:
341: if (verbose_mode)
1.186 schwarze 342: fmprintf(stderr,
1.169 markus 343: "Executing: 2nd program %s host %s, user %s, command %s\n",
344: ssh_program, host,
345: remuser ? remuser : "(unspecified)", cmd);
346:
1.193 millert 347: if (port == -1)
348: port = sshport;
349:
1.169 markus 350: /* Fork a child to execute the command on the remote host using ssh. */
351: pid = fork();
352: if (pid == 0) {
353: dup2(fdin, 0);
354: dup2(fdout, 1);
355:
356: replacearg(&args, 0, "%s", ssh_program);
1.193 millert 357: if (port != -1) {
358: addargs(&args, "-p");
359: addargs(&args, "%d", port);
360: }
1.169 markus 361: if (remuser != NULL) {
362: addargs(&args, "-l");
363: addargs(&args, "%s", remuser);
364: }
1.208 markus 365: addargs(&args, "-oBatchMode=yes");
1.169 markus 366: addargs(&args, "--");
367: addargs(&args, "%s", host);
368: addargs(&args, "%s", cmd);
369:
370: execvp(ssh_program, args.list);
371: perror(ssh_program);
372: exit(1);
373: } else if (pid == -1) {
374: fatal("fork: %s", strerror(errno));
375: }
376: while (waitpid(pid, &status, 0) == -1)
377: if (errno != EINTR)
378: fatal("do_cmd2: waitpid: %s", strerror(errno));
379: return 0;
380: }
381:
1.1 deraadt 382: typedef struct {
1.124 djm 383: size_t cnt;
1.1 deraadt 384: char *buf;
385: } BUF;
386:
1.18 markus 387: BUF *allocbuf(BUF *, int, int);
388: void lostconn(int);
389: int okname(char *);
1.211 millert 390: void run_err(const char *,...)
391: __attribute__((__format__ (printf, 1, 2)))
392: __attribute__((__nonnull__ (1)));
393: int note_err(const char *,...)
394: __attribute__((__format__ (printf, 1, 2)));
1.18 markus 395: void verifydir(char *);
1.1 deraadt 396:
397: struct passwd *pwd;
1.18 markus 398: uid_t userid;
1.219 djm 399: int errs, remin, remout, remin2, remout2;
1.202 djm 400: int Tflag, pflag, iamremote, iamrecursive, targetshouldbedirectory;
1.1 deraadt 401:
402: #define CMDNEEDS 64
403: char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */
404:
1.216 djm 405: enum scp_mode_e {
406: MODE_SCP,
407: MODE_SFTP
408: };
409:
1.18 markus 410: int response(void);
411: void rsource(char *, struct stat *);
1.202 djm 412: void sink(int, char *[], const char *);
1.18 markus 413: void source(int, char *[]);
1.216 djm 414: void tolocal(int, char *[], enum scp_mode_e, char *sftp_direct);
415: void toremote(int, char *[], enum scp_mode_e, char *sftp_direct);
1.18 markus 416: void usage(void);
1.1 deraadt 417:
1.228 djm 418: void source_sftp(int, char *, char *, struct sftp_conn *);
1.216 djm 419: void sink_sftp(int, char *, const char *, struct sftp_conn *);
1.219 djm 420: void throughlocal_sftp(struct sftp_conn *, struct sftp_conn *,
1.228 djm 421: char *, char *);
1.216 djm 422:
1.1 deraadt 423: int
1.104 djm 424: main(int argc, char **argv)
1.1 deraadt 425: {
1.250 djm 426: int ch, fflag, tflag, status, r, n;
1.216 djm 427: char **newargv, *argv0;
1.167 djm 428: const char *errstr;
1.1 deraadt 429: extern char *optarg;
430: extern int optind;
1.246 deraadt 431: enum scp_mode_e mode = MODE_SFTP;
1.216 djm 432: char *sftp_direct = NULL;
1.250 djm 433: long long llv;
1.126 djm 434:
435: /* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */
436: sanitise_stdfd();
1.145 djm 437:
1.186 schwarze 438: setlocale(LC_CTYPE, "");
439:
1.145 djm 440: /* Copy argv, because we modify it */
1.216 djm 441: argv0 = argv[0];
1.187 deraadt 442: newargv = xcalloc(MAXIMUM(argc + 1, 1), sizeof(*newargv));
1.145 djm 443: for (n = 0; n < argc; n++)
444: newargv[n] = xstrdup(argv[n]);
445: argv = newargv;
1.1 deraadt 446:
1.235 djm 447: log_init(argv0, log_level, SYSLOG_FACILITY_USER, 2);
1.218 djm 448:
1.129 djm 449: memset(&args, '\0', sizeof(args));
1.168 djm 450: memset(&remote_remote_args, '\0', sizeof(remote_remote_args));
451: args.list = remote_remote_args.list = NULL;
1.129 djm 452: addargs(&args, "%s", ssh_program);
1.70 mouring 453: addargs(&args, "-x");
1.168 djm 454: addargs(&args, "-oPermitLocalCommand=no");
455: addargs(&args, "-oClearAllForwardings=yes");
1.195 djm 456: addargs(&args, "-oRemoteCommand=none");
457: addargs(&args, "-oRequestTTY=no");
1.41 markus 458:
1.202 djm 459: fflag = Tflag = tflag = 0;
460: while ((ch = getopt(argc, argv,
1.250 djm 461: "12346ABCTdfOpqRrstvD:F:J:M:P:S:c:i:l:o:X:")) != -1) {
1.18 markus 462: switch (ch) {
463: /* User-visible flags. */
1.100 markus 464: case '1':
1.190 djm 465: fatal("SSH protocol v.1 is no longer supported");
466: break;
1.100 markus 467: case '2':
1.190 djm 468: /* Ignored */
469: break;
1.212 djm 470: case 'A':
1.23 markus 471: case '4':
1.41 markus 472: case '6':
473: case 'C':
1.70 mouring 474: addargs(&args, "-%c", ch);
1.168 djm 475: addargs(&remote_remote_args, "-%c", ch);
1.41 markus 476: break;
1.216 djm 477: case 'D':
478: sftp_direct = optarg;
479: break;
1.169 markus 480: case '3':
481: throughlocal = 1;
482: break;
1.229 djm 483: case 'R':
484: throughlocal = 0;
485: break;
1.41 markus 486: case 'o':
487: case 'c':
488: case 'i':
1.83 stevesk 489: case 'F':
1.199 tb 490: case 'J':
1.168 djm 491: addargs(&remote_remote_args, "-%c", ch);
492: addargs(&remote_remote_args, "%s", optarg);
1.165 guenther 493: addargs(&args, "-%c", ch);
494: addargs(&args, "%s", optarg);
1.23 markus 495: break;
1.230 djm 496: case 'O':
497: mode = MODE_SCP;
498: break;
499: case 's':
500: mode = MODE_SFTP;
501: break;
1.41 markus 502: case 'P':
1.193 millert 503: sshport = a2port(optarg);
504: if (sshport <= 0)
505: fatal("bad port \"%s\"\n", optarg);
1.41 markus 506: break;
507: case 'B':
1.168 djm 508: addargs(&remote_remote_args, "-oBatchmode=yes");
509: addargs(&args, "-oBatchmode=yes");
1.23 markus 510: break;
1.99 markus 511: case 'l':
1.167 djm 512: limit_kbps = strtonum(optarg, 1, 100 * 1024 * 1024,
513: &errstr);
514: if (errstr != NULL)
1.99 markus 515: usage();
1.167 djm 516: limit_kbps *= 1024; /* kbps */
517: bandwidth_limit_init(&bwlimit, limit_kbps, COPY_BUFLEN);
1.99 markus 518: break;
1.1 deraadt 519: case 'p':
520: pflag = 1;
521: break;
522: case 'r':
523: iamrecursive = 1;
524: break;
1.34 deraadt 525: case 'S':
1.41 markus 526: ssh_program = xstrdup(optarg);
527: break;
528: case 'v':
1.72 markus 529: addargs(&args, "-v");
1.168 djm 530: addargs(&remote_remote_args, "-v");
1.216 djm 531: if (verbose_mode == 0)
532: log_level = SYSLOG_LEVEL_DEBUG1;
533: else if (log_level < SYSLOG_LEVEL_DEBUG3)
534: log_level++;
1.41 markus 535: verbose_mode = 1;
536: break;
537: case 'q':
1.111 dtucker 538: addargs(&args, "-q");
1.168 djm 539: addargs(&remote_remote_args, "-q");
1.41 markus 540: showprogress = 0;
1.34 deraadt 541: break;
1.250 djm 542: case 'X':
543: /* Please keep in sync with sftp.c -X */
544: if (strncmp(optarg, "buffer=", 7) == 0) {
545: r = scan_scaled(optarg + 7, &llv);
546: if (r == 0 && (llv <= 0 || llv > 256 * 1024)) {
547: r = -1;
548: errno = EINVAL;
549: }
550: if (r == -1) {
551: fatal("Invalid buffer size \"%s\": %s",
552: optarg + 7, strerror(errno));
553: }
554: sftp_copy_buflen = (size_t)llv;
555: } else if (strncmp(optarg, "nrequests=", 10) == 0) {
556: llv = strtonum(optarg + 10, 1, 256 * 1024,
557: &errstr);
558: if (errstr != NULL) {
559: fatal("Invalid number of requests "
560: "\"%s\": %s", optarg + 10, errstr);
561: }
562: sftp_nrequests = (size_t)llv;
563: } else {
564: fatal("Invalid -X option");
565: }
566: break;
1.34 deraadt 567:
1.18 markus 568: /* Server options. */
1.1 deraadt 569: case 'd':
570: targetshouldbedirectory = 1;
571: break;
1.18 markus 572: case 'f': /* "from" */
1.1 deraadt 573: iamremote = 1;
574: fflag = 1;
575: break;
1.18 markus 576: case 't': /* "to" */
1.1 deraadt 577: iamremote = 1;
578: tflag = 1;
579: break;
1.202 djm 580: case 'T':
581: Tflag = 1;
582: break;
1.1 deraadt 583: default:
584: usage();
585: }
1.202 djm 586: }
1.1 deraadt 587: argc -= optind;
588: argv += optind;
589:
1.235 djm 590: log_init(argv0, log_level, SYSLOG_FACILITY_USER, 2);
1.216 djm 591:
1.212 djm 592: /* Do this last because we want the user to be able to override it */
593: addargs(&args, "-oForwardAgent=no");
594:
1.218 djm 595: if (iamremote)
596: mode = MODE_SCP;
1.216 djm 597:
1.1 deraadt 598: if ((pwd = getpwuid(userid = getuid())) == NULL)
1.108 deraadt 599: fatal("unknown user %u", (u_int) userid);
1.1 deraadt 600:
1.156 djm 601: if (!isatty(STDOUT_FILENO))
1.7 deraadt 602: showprogress = 0;
1.184 deraadt 603:
604: if (pflag) {
605: /* Cannot pledge: -p allows setuid/setgid files... */
606: } else {
607: if (pledge("stdio rpath wpath cpath fattr tty proc exec",
608: NULL) == -1) {
609: perror("pledge");
610: exit(1);
611: }
612: }
1.7 deraadt 613:
1.1 deraadt 614: remin = STDIN_FILENO;
615: remout = STDOUT_FILENO;
616:
1.52 stevesk 617: if (fflag) {
1.18 markus 618: /* Follow "protocol", send data. */
619: (void) response();
1.1 deraadt 620: source(argc, argv);
621: exit(errs != 0);
622: }
1.18 markus 623: if (tflag) {
624: /* Receive data. */
1.202 djm 625: sink(argc, argv, NULL);
1.1 deraadt 626: exit(errs != 0);
627: }
628: if (argc < 2)
629: usage();
630: if (argc > 2)
631: targetshouldbedirectory = 1;
632:
633: remin = remout = -1;
1.92 markus 634: do_cmd_pid = -1;
1.1 deraadt 635: /* Command to be executed on remote system using "ssh". */
1.55 deraadt 636: (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s",
637: verbose_mode ? " -v" : "",
1.35 deraadt 638: iamrecursive ? " -r" : "", pflag ? " -p" : "",
639: targetshouldbedirectory ? " -d" : "");
1.1 deraadt 640:
1.207 dtucker 641: (void) ssh_signal(SIGPIPE, lostconn);
1.1 deraadt 642:
1.193 millert 643: if (colon(argv[argc - 1])) /* Dest is remote host. */
1.216 djm 644: toremote(argc, argv, mode, sftp_direct);
1.1 deraadt 645: else {
646: if (targetshouldbedirectory)
647: verifydir(argv[argc - 1]);
1.216 djm 648: tolocal(argc, argv, mode, sftp_direct); /* Dest is local host. */
1.92 markus 649: }
650: /*
651: * Finally check the exit status of the ssh process, if one was forked
1.164 stevesk 652: * and no error has occurred yet
1.92 markus 653: */
1.234 djm 654: if (do_cmd_pid != -1 && (mode == MODE_SFTP || errs == 0)) {
1.92 markus 655: if (remin != -1)
656: (void) close(remin);
657: if (remout != -1)
658: (void) close(remout);
659: if (waitpid(do_cmd_pid, &status, 0) == -1)
660: errs = 1;
661: else {
662: if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
663: errs = 1;
664: }
1.1 deraadt 665: }
666: exit(errs != 0);
667: }
668:
1.167 djm 669: /* Callback from atomicio6 to update progress meter and limit bandwidth */
670: static int
671: scpio(void *_cnt, size_t s)
1.161 djm 672: {
1.167 djm 673: off_t *cnt = (off_t *)_cnt;
674:
675: *cnt += s;
1.201 dtucker 676: refresh_progress_meter(0);
1.167 djm 677: if (limit_kbps > 0)
678: bandwidth_limit(&bwlimit, s);
679: return 0;
1.161 djm 680: }
681:
1.176 guenther 682: static int
683: do_times(int fd, int verb, const struct stat *sb)
684: {
685: /* strlen(2^64) == 20; strlen(10^6) == 7 */
686: char buf[(20 + 7 + 2) * 2 + 2];
687:
688: (void)snprintf(buf, sizeof(buf), "T%llu 0 %llu 0\n",
689: (unsigned long long) (sb->st_mtime < 0 ? 0 : sb->st_mtime),
690: (unsigned long long) (sb->st_atime < 0 ? 0 : sb->st_atime));
691: if (verb) {
692: fprintf(stderr, "File mtime %lld atime %lld\n",
693: (long long)sb->st_mtime, (long long)sb->st_atime);
694: fprintf(stderr, "Sending file timestamps: %s", buf);
695: }
696: (void) atomicio(vwrite, fd, buf, strlen(buf));
697: return (response());
698: }
699:
1.194 millert 700: static int
701: parse_scp_uri(const char *uri, char **userp, char **hostp, int *portp,
1.214 djm 702: char **pathp)
1.194 millert 703: {
704: int r;
705:
706: r = parse_uri("scp", uri, userp, hostp, portp, pathp);
707: if (r == 0 && *pathp == NULL)
708: *pathp = xstrdup(".");
709: return r;
710: }
711:
1.204 djm 712: /* Appends a string to an array; returns 0 on success, -1 on alloc failure */
713: static int
714: append(char *cp, char ***ap, size_t *np)
715: {
716: char **tmp;
717:
718: if ((tmp = reallocarray(*ap, *np + 1, sizeof(*tmp))) == NULL)
719: return -1;
720: tmp[(*np)] = cp;
721: (*np)++;
722: *ap = tmp;
723: return 0;
724: }
725:
726: /*
727: * Finds the start and end of the first brace pair in the pattern.
728: * returns 0 on success or -1 for invalid patterns.
729: */
730: static int
731: find_brace(const char *pattern, int *startp, int *endp)
732: {
733: int i;
734: int in_bracket, brace_level;
735:
736: *startp = *endp = -1;
737: in_bracket = brace_level = 0;
738: for (i = 0; i < INT_MAX && *endp < 0 && pattern[i] != '\0'; i++) {
739: switch (pattern[i]) {
740: case '\\':
741: /* skip next character */
742: if (pattern[i + 1] != '\0')
743: i++;
744: break;
745: case '[':
746: in_bracket = 1;
747: break;
748: case ']':
749: in_bracket = 0;
750: break;
751: case '{':
752: if (in_bracket)
753: break;
754: if (pattern[i + 1] == '}') {
755: /* Protect a single {}, for find(1), like csh */
756: i++; /* skip */
757: break;
758: }
759: if (*startp == -1)
760: *startp = i;
761: brace_level++;
762: break;
763: case '}':
764: if (in_bracket)
765: break;
766: if (*startp < 0) {
767: /* Unbalanced brace */
768: return -1;
769: }
770: if (--brace_level <= 0)
771: *endp = i;
772: break;
773: }
774: }
775: /* unbalanced brackets/braces */
776: if (*endp < 0 && (*startp >= 0 || in_bracket))
777: return -1;
778: return 0;
779: }
780:
781: /*
782: * Assembles and records a successfully-expanded pattern, returns -1 on
783: * alloc failure.
784: */
785: static int
786: emit_expansion(const char *pattern, int brace_start, int brace_end,
787: int sel_start, int sel_end, char ***patternsp, size_t *npatternsp)
788: {
789: char *cp;
790: int o = 0, tail_len = strlen(pattern + brace_end + 1);
791:
792: if ((cp = malloc(brace_start + (sel_end - sel_start) +
793: tail_len + 1)) == NULL)
794: return -1;
795:
796: /* Pattern before initial brace */
797: if (brace_start > 0) {
798: memcpy(cp, pattern, brace_start);
799: o = brace_start;
800: }
801: /* Current braced selection */
802: if (sel_end - sel_start > 0) {
803: memcpy(cp + o, pattern + sel_start,
804: sel_end - sel_start);
805: o += sel_end - sel_start;
806: }
807: /* Remainder of pattern after closing brace */
808: if (tail_len > 0) {
809: memcpy(cp + o, pattern + brace_end + 1, tail_len);
810: o += tail_len;
811: }
812: cp[o] = '\0';
813: if (append(cp, patternsp, npatternsp) != 0) {
814: free(cp);
815: return -1;
816: }
817: return 0;
818: }
819:
820: /*
821: * Expand the first encountered brace in pattern, appending the expanded
822: * patterns it yielded to the *patternsp array.
823: *
824: * Returns 0 on success or -1 on allocation failure.
825: *
826: * Signals whether expansion was performed via *expanded and whether
827: * pattern was invalid via *invalid.
828: */
829: static int
830: brace_expand_one(const char *pattern, char ***patternsp, size_t *npatternsp,
831: int *expanded, int *invalid)
832: {
833: int i;
834: int in_bracket, brace_start, brace_end, brace_level;
835: int sel_start, sel_end;
836:
837: *invalid = *expanded = 0;
838:
839: if (find_brace(pattern, &brace_start, &brace_end) != 0) {
840: *invalid = 1;
841: return 0;
842: } else if (brace_start == -1)
843: return 0;
844:
845: in_bracket = brace_level = 0;
846: for (i = sel_start = brace_start + 1; i < brace_end; i++) {
847: switch (pattern[i]) {
848: case '{':
849: if (in_bracket)
850: break;
851: brace_level++;
852: break;
853: case '}':
854: if (in_bracket)
855: break;
856: brace_level--;
857: break;
858: case '[':
859: in_bracket = 1;
860: break;
861: case ']':
862: in_bracket = 0;
863: break;
864: case '\\':
865: if (i < brace_end - 1)
866: i++; /* skip */
867: break;
868: }
869: if (pattern[i] == ',' || i == brace_end - 1) {
870: if (in_bracket || brace_level > 0)
871: continue;
872: /* End of a selection, emit an expanded pattern */
873:
874: /* Adjust end index for last selection */
875: sel_end = (i == brace_end - 1) ? brace_end : i;
876: if (emit_expansion(pattern, brace_start, brace_end,
877: sel_start, sel_end, patternsp, npatternsp) != 0)
878: return -1;
879: /* move on to the next selection */
880: sel_start = i + 1;
881: continue;
882: }
883: }
884: if (in_bracket || brace_level > 0) {
885: *invalid = 1;
886: return 0;
887: }
888: /* success */
889: *expanded = 1;
890: return 0;
891: }
892:
893: /* Expand braces from pattern. Returns 0 on success, -1 on failure */
894: static int
895: brace_expand(const char *pattern, char ***patternsp, size_t *npatternsp)
896: {
897: char *cp, *cp2, **active = NULL, **done = NULL;
898: size_t i, nactive = 0, ndone = 0;
899: int ret = -1, invalid = 0, expanded = 0;
900:
901: *patternsp = NULL;
902: *npatternsp = 0;
903:
904: /* Start the worklist with the original pattern */
905: if ((cp = strdup(pattern)) == NULL)
906: return -1;
907: if (append(cp, &active, &nactive) != 0) {
908: free(cp);
909: return -1;
910: }
911: while (nactive > 0) {
912: cp = active[nactive - 1];
913: nactive--;
914: if (brace_expand_one(cp, &active, &nactive,
915: &expanded, &invalid) == -1) {
916: free(cp);
917: goto fail;
918: }
919: if (invalid)
1.213 djm 920: fatal_f("invalid brace pattern \"%s\"", cp);
1.204 djm 921: if (expanded) {
922: /*
923: * Current entry expanded to new entries on the
924: * active list; discard the progenitor pattern.
925: */
926: free(cp);
927: continue;
928: }
929: /*
930: * Pattern did not expand; append the finename component to
931: * the completed list
932: */
933: if ((cp2 = strrchr(cp, '/')) != NULL)
934: *cp2++ = '\0';
935: else
936: cp2 = cp;
937: if (append(xstrdup(cp2), &done, &ndone) != 0) {
938: free(cp);
939: goto fail;
940: }
941: free(cp);
942: }
943: /* success */
944: *patternsp = done;
945: *npatternsp = ndone;
946: done = NULL;
947: ndone = 0;
948: ret = 0;
949: fail:
950: for (i = 0; i < nactive; i++)
951: free(active[i]);
952: free(active);
953: for (i = 0; i < ndone; i++)
954: free(done[i]);
955: free(done);
956: return ret;
957: }
958:
1.216 djm 959: static struct sftp_conn *
1.219 djm 960: do_sftp_connect(char *host, char *user, int port, char *sftp_direct,
961: int *reminp, int *remoutp, int *pidp)
1.216 djm 962: {
963: if (sftp_direct == NULL) {
1.231 naddy 964: if (do_cmd(ssh_program, host, user, port, 1, "sftp",
1.219 djm 965: reminp, remoutp, pidp) < 0)
1.216 djm 966: return NULL;
967:
968: } else {
1.247 djm 969: freeargs(&args);
1.216 djm 970: addargs(&args, "sftp-server");
1.231 naddy 971: if (do_cmd(sftp_direct, host, NULL, -1, 0, "sftp",
1.219 djm 972: reminp, remoutp, pidp) < 0)
1.216 djm 973: return NULL;
974: }
1.250 djm 975: return do_init(*reminp, *remoutp,
976: sftp_copy_buflen, sftp_nrequests, limit_kbps);
1.216 djm 977: }
978:
1.1 deraadt 979: void
1.216 djm 980: toremote(int argc, char **argv, enum scp_mode_e mode, char *sftp_direct)
1.1 deraadt 981: {
1.193 millert 982: char *suser = NULL, *host = NULL, *src = NULL;
983: char *bp, *tuser, *thost, *targ;
984: int sport = -1, tport = -1;
1.219 djm 985: struct sftp_conn *conn = NULL, *conn2 = NULL;
1.129 djm 986: arglist alist;
1.219 djm 987: int i, r, status;
1.168 djm 988: u_int j;
1.129 djm 989:
990: memset(&alist, '\0', sizeof(alist));
991: alist.list = NULL;
1.1 deraadt 992:
1.193 millert 993: /* Parse target */
1.194 millert 994: r = parse_scp_uri(argv[argc - 1], &tuser, &thost, &tport, &targ);
995: if (r == -1) {
996: fmprintf(stderr, "%s: invalid uri\n", argv[argc - 1]);
997: ++errs;
998: goto out;
999: }
1.193 millert 1000: if (r != 0) {
1001: if (parse_user_host_path(argv[argc - 1], &tuser, &thost,
1.194 millert 1002: &targ) == -1) {
1003: fmprintf(stderr, "%s: invalid target\n", argv[argc - 1]);
1004: ++errs;
1.193 millert 1005: goto out;
1.194 millert 1006: }
1.129 djm 1007: }
1008:
1.193 millert 1009: /* Parse source files */
1.1 deraadt 1010: for (i = 0; i < argc - 1; i++) {
1.193 millert 1011: free(suser);
1012: free(host);
1013: free(src);
1.194 millert 1014: r = parse_scp_uri(argv[i], &suser, &host, &sport, &src);
1015: if (r == -1) {
1016: fmprintf(stderr, "%s: invalid uri\n", argv[i]);
1017: ++errs;
1018: continue;
1019: }
1020: if (r != 0) {
1.193 millert 1021: parse_user_host_path(argv[i], &suser, &host, &src);
1.194 millert 1022: }
1.193 millert 1023: if (suser != NULL && !okname(suser)) {
1024: ++errs;
1025: continue;
1026: }
1027: if (host && throughlocal) { /* extended remote to remote */
1.219 djm 1028: if (mode == MODE_SFTP) {
1029: if (remin == -1) {
1030: /* Connect to dest now */
1031: conn = do_sftp_connect(thost, tuser,
1032: tport, sftp_direct,
1033: &remin, &remout, &do_cmd_pid);
1034: if (conn == NULL) {
1035: fatal("Unable to open "
1036: "destination connection");
1037: }
1038: debug3_f("origin in %d out %d pid %ld",
1039: remin, remout, (long)do_cmd_pid);
1040: }
1041: /*
1042: * XXX remember suser/host/sport and only
1043: * reconnect if they change between arguments.
1044: * would save reconnections for cases like
1045: * scp -3 hosta:/foo hosta:/bar hostb:
1046: */
1047: /* Connect to origin now */
1048: conn2 = do_sftp_connect(host, suser,
1049: sport, sftp_direct,
1050: &remin2, &remout2, &do_cmd_pid2);
1051: if (conn2 == NULL) {
1052: fatal("Unable to open "
1053: "source connection");
1054: }
1055: debug3_f("destination in %d out %d pid %ld",
1056: remin2, remout2, (long)do_cmd_pid2);
1.228 djm 1057: throughlocal_sftp(conn2, conn, src, targ);
1.219 djm 1058: (void) close(remin2);
1059: (void) close(remout2);
1060: remin2 = remout2 = -1;
1061: if (waitpid(do_cmd_pid2, &status, 0) == -1)
1062: ++errs;
1063: else if (!WIFEXITED(status) ||
1064: WEXITSTATUS(status) != 0)
1065: ++errs;
1066: do_cmd_pid2 = -1;
1067: continue;
1068: } else {
1069: xasprintf(&bp, "%s -f %s%s", cmd,
1070: *src == '-' ? "-- " : "", src);
1.231 naddy 1071: if (do_cmd(ssh_program, host, suser, sport, 0,
1.219 djm 1072: bp, &remin, &remout, &do_cmd_pid) < 0)
1073: exit(1);
1074: free(bp);
1075: xasprintf(&bp, "%s -t %s%s", cmd,
1076: *targ == '-' ? "-- " : "", targ);
1077: if (do_cmd2(thost, tuser, tport, bp,
1078: remin, remout) < 0)
1079: exit(1);
1080: free(bp);
1081: (void) close(remin);
1082: (void) close(remout);
1083: remin = remout = -1;
1084: }
1.193 millert 1085: } else if (host) { /* standard remote to remote */
1.215 djm 1086: /*
1087: * Second remote user is passed to first remote side
1088: * via scp command-line. Ensure it contains no obvious
1089: * shell characters.
1090: */
1091: if (tuser != NULL && !okname(tuser)) {
1092: ++errs;
1093: continue;
1094: }
1.193 millert 1095: if (tport != -1 && tport != SSH_DEFAULT_PORT) {
1096: /* This would require the remote support URIs */
1097: fatal("target port not supported with two "
1.232 naddy 1098: "remote hosts and the -R option");
1.193 millert 1099: }
1100:
1.129 djm 1101: freeargs(&alist);
1102: addargs(&alist, "%s", ssh_program);
1103: addargs(&alist, "-x");
1.168 djm 1104: addargs(&alist, "-oClearAllForwardings=yes");
1.129 djm 1105: addargs(&alist, "-n");
1.168 djm 1106: for (j = 0; j < remote_remote_args.num; j++) {
1107: addargs(&alist, "%s",
1108: remote_remote_args.list[j]);
1109: }
1.193 millert 1110:
1111: if (sport != -1) {
1112: addargs(&alist, "-p");
1113: addargs(&alist, "%d", sport);
1114: }
1115: if (suser) {
1.129 djm 1116: addargs(&alist, "-l");
1117: addargs(&alist, "%s", suser);
1.23 markus 1118: }
1.165 guenther 1119: addargs(&alist, "--");
1.129 djm 1120: addargs(&alist, "%s", host);
1121: addargs(&alist, "%s", cmd);
1122: addargs(&alist, "%s", src);
1123: addargs(&alist, "%s%s%s:%s",
1124: tuser ? tuser : "", tuser ? "@" : "",
1125: thost, targ);
1126: if (do_local_cmd(&alist) != 0)
1.109 markus 1127: errs = 1;
1.18 markus 1128: } else { /* local to remote */
1.216 djm 1129: if (mode == MODE_SFTP) {
1130: if (remin == -1) {
1131: /* Connect to remote now */
1132: conn = do_sftp_connect(thost, tuser,
1.219 djm 1133: tport, sftp_direct,
1134: &remin, &remout, &do_cmd_pid);
1.216 djm 1135: if (conn == NULL) {
1136: fatal("Unable to open sftp "
1137: "connection");
1138: }
1139: }
1140:
1141: /* The protocol */
1.228 djm 1142: source_sftp(1, argv[i], targ, conn);
1.216 djm 1143: continue;
1144: }
1145: /* SCP */
1.1 deraadt 1146: if (remin == -1) {
1.171 djm 1147: xasprintf(&bp, "%s -t %s%s", cmd,
1148: *targ == '-' ? "-- " : "", targ);
1.231 naddy 1149: if (do_cmd(ssh_program, thost, tuser, tport, 0,
1150: bp, &remin, &remout, &do_cmd_pid) < 0)
1.18 markus 1151: exit(1);
1.1 deraadt 1152: if (response() < 0)
1153: exit(1);
1.173 djm 1154: free(bp);
1.1 deraadt 1155: }
1.18 markus 1156: source(1, argv + i);
1.1 deraadt 1157: }
1158: }
1.193 millert 1159: out:
1.228 djm 1160: if (mode == MODE_SFTP)
1.216 djm 1161: free(conn);
1.193 millert 1162: free(tuser);
1163: free(thost);
1164: free(targ);
1165: free(suser);
1166: free(host);
1167: free(src);
1.1 deraadt 1168: }
1169:
1170: void
1.216 djm 1171: tolocal(int argc, char **argv, enum scp_mode_e mode, char *sftp_direct)
1.1 deraadt 1172: {
1.193 millert 1173: char *bp, *host = NULL, *src = NULL, *suser = NULL;
1.129 djm 1174: arglist alist;
1.216 djm 1175: struct sftp_conn *conn = NULL;
1.193 millert 1176: int i, r, sport = -1;
1.129 djm 1177:
1178: memset(&alist, '\0', sizeof(alist));
1179: alist.list = NULL;
1.1 deraadt 1180:
1181: for (i = 0; i < argc - 1; i++) {
1.193 millert 1182: free(suser);
1183: free(host);
1184: free(src);
1.194 millert 1185: r = parse_scp_uri(argv[i], &suser, &host, &sport, &src);
1.193 millert 1186: if (r == -1) {
1.194 millert 1187: fmprintf(stderr, "%s: invalid uri\n", argv[i]);
1.193 millert 1188: ++errs;
1189: continue;
1190: }
1191: if (r != 0)
1192: parse_user_host_path(argv[i], &suser, &host, &src);
1193: if (suser != NULL && !okname(suser)) {
1194: ++errs;
1195: continue;
1196: }
1197: if (!host) { /* Local to local. */
1.129 djm 1198: freeargs(&alist);
1199: addargs(&alist, "%s", _PATH_CP);
1200: if (iamrecursive)
1201: addargs(&alist, "-r");
1202: if (pflag)
1203: addargs(&alist, "-p");
1.165 guenther 1204: addargs(&alist, "--");
1.129 djm 1205: addargs(&alist, "%s", argv[i]);
1206: addargs(&alist, "%s", argv[argc-1]);
1207: if (do_local_cmd(&alist))
1.1 deraadt 1208: ++errs;
1209: continue;
1210: }
1.193 millert 1211: /* Remote to local. */
1.216 djm 1212: if (mode == MODE_SFTP) {
1.219 djm 1213: conn = do_sftp_connect(host, suser, sport,
1214: sftp_direct, &remin, &remout, &do_cmd_pid);
1.216 djm 1215: if (conn == NULL) {
1.236 djm 1216: error("sftp connection failed");
1.216 djm 1217: ++errs;
1218: continue;
1219: }
1220:
1221: /* The protocol */
1222: sink_sftp(1, argv[argc - 1], src, conn);
1223:
1224: free(conn);
1225: (void) close(remin);
1226: (void) close(remout);
1227: remin = remout = -1;
1228: continue;
1229: }
1230: /* SCP */
1.171 djm 1231: xasprintf(&bp, "%s -f %s%s",
1232: cmd, *src == '-' ? "-- " : "", src);
1.231 naddy 1233: if (do_cmd(ssh_program, host, suser, sport, 0, bp,
1.219 djm 1234: &remin, &remout, &do_cmd_pid) < 0) {
1.173 djm 1235: free(bp);
1.18 markus 1236: ++errs;
1237: continue;
1.1 deraadt 1238: }
1.173 djm 1239: free(bp);
1.202 djm 1240: sink(1, argv + argc - 1, src);
1.18 markus 1241: (void) close(remin);
1.1 deraadt 1242: remin = remout = -1;
1243: }
1.193 millert 1244: free(suser);
1245: free(host);
1246: free(src);
1.1 deraadt 1247: }
1248:
1.228 djm 1249: /* Prepare remote path, handling ~ by assuming cwd is the homedir */
1.226 djm 1250: static char *
1.228 djm 1251: prepare_remote_path(struct sftp_conn *conn, const char *path)
1.226 djm 1252: {
1.242 djm 1253: size_t nslash;
1254:
1.228 djm 1255: /* Handle ~ prefixed paths */
1.242 djm 1256: if (*path == '\0' || strcmp(path, "~") == 0)
1257: return xstrdup(".");
1.228 djm 1258: if (*path != '~')
1259: return xstrdup(path);
1.242 djm 1260: if (strncmp(path, "~/", 2) == 0) {
1261: if ((nslash = strspn(path + 2, "/")) == strlen(path + 2))
1262: return xstrdup(".");
1263: return xstrdup(path + 2 + nslash);
1264: }
1.227 djm 1265: if (can_expand_path(conn))
1266: return do_expand_path(conn, path);
1.228 djm 1267: /* No protocol extension */
1.237 djm 1268: error("server expand-path extension is required "
1269: "for ~user paths in SFTP mode");
1.228 djm 1270: return NULL;
1.226 djm 1271: }
1272:
1.1 deraadt 1273: void
1.228 djm 1274: source_sftp(int argc, char *src, char *targ, struct sftp_conn *conn)
1.216 djm 1275: {
1276: char *target = NULL, *filename = NULL, *abs_dst = NULL;
1.243 djm 1277: int src_is_dir, target_is_dir;
1278: Attrib a;
1279: struct stat st;
1280:
1281: memset(&a, '\0', sizeof(a));
1282: if (stat(src, &st) != 0)
1283: fatal("stat local \"%s\": %s", src, strerror(errno));
1284: src_is_dir = S_ISDIR(st.st_mode);
1.216 djm 1285: if ((filename = basename(src)) == NULL)
1.243 djm 1286: fatal("basename \"%s\": %s", src, strerror(errno));
1.216 djm 1287:
1288: /*
1289: * No need to glob here - the local shell already took care of
1290: * the expansions
1291: */
1.228 djm 1292: if ((target = prepare_remote_path(conn, targ)) == NULL)
1.226 djm 1293: cleanup_exit(255);
1.216 djm 1294: target_is_dir = remote_is_dir(conn, target);
1295: if (targetshouldbedirectory && !target_is_dir) {
1.243 djm 1296: debug("target directory \"%s\" does not exist", target);
1297: a.flags = SSH2_FILEXFER_ATTR_PERMISSIONS;
1298: a.perm = st.st_mode | 0700; /* ensure writable */
1299: if (do_mkdir(conn, target, &a, 1) != 0)
1300: cleanup_exit(255); /* error already logged */
1301: target_is_dir = 1;
1.216 djm 1302: }
1303: if (target_is_dir)
1304: abs_dst = path_append(target, filename);
1305: else {
1306: abs_dst = target;
1307: target = NULL;
1308: }
1309: debug3_f("copying local %s to remote %s", src, abs_dst);
1310:
1.243 djm 1311: if (src_is_dir && iamrecursive) {
1.220 djm 1312: if (upload_dir(conn, src, abs_dst, pflag,
1.248 djm 1313: SFTP_PROGRESS_ONLY, 0, 0, 1, 1) != 0) {
1.244 djm 1314: error("failed to upload directory %s to %s", src, targ);
1.234 djm 1315: errs = 1;
1.216 djm 1316: }
1.248 djm 1317: } else if (do_upload(conn, src, abs_dst, pflag, 0, 0, 1) != 0) {
1.244 djm 1318: error("failed to upload file %s to %s", src, targ);
1.234 djm 1319: errs = 1;
1320: }
1.216 djm 1321:
1322: free(abs_dst);
1323: free(target);
1324: }
1325:
1326: void
1.104 djm 1327: source(int argc, char **argv)
1.1 deraadt 1328: {
1329: struct stat stb;
1330: static BUF buffer;
1331: BUF *bp;
1.163 dtucker 1332: off_t i, statbytes;
1.180 djm 1333: size_t amt, nr;
1.125 dtucker 1334: int fd = -1, haderr, indx;
1.206 dtucker 1335: char *last, *name, buf[PATH_MAX + 128], encname[PATH_MAX];
1.65 deraadt 1336: int len;
1.1 deraadt 1337:
1338: for (indx = 0; indx < argc; ++indx) {
1.18 markus 1339: name = argv[indx];
1.11 aaron 1340: statbytes = 0;
1.65 deraadt 1341: len = strlen(name);
1342: while (len > 1 && name[len-1] == '/')
1343: name[--len] = '\0';
1.241 deraadt 1344: if ((fd = open(name, O_RDONLY|O_NONBLOCK)) == -1)
1.158 dtucker 1345: goto syserr;
1.85 markus 1346: if (strchr(name, '\n') != NULL) {
1.158 dtucker 1347: strnvis(encname, name, sizeof(encname), VIS_NL);
1348: name = encname;
1.85 markus 1349: }
1.205 deraadt 1350: if (fstat(fd, &stb) == -1) {
1.1 deraadt 1351: syserr: run_err("%s: %s", name, strerror(errno));
1352: goto next;
1353: }
1.163 dtucker 1354: if (stb.st_size < 0) {
1355: run_err("%s: %s", name, "Negative file size");
1356: goto next;
1357: }
1.157 djm 1358: unset_nonblock(fd);
1.1 deraadt 1359: switch (stb.st_mode & S_IFMT) {
1360: case S_IFREG:
1361: break;
1362: case S_IFDIR:
1363: if (iamrecursive) {
1364: rsource(name, &stb);
1365: goto next;
1366: }
1367: /* FALLTHROUGH */
1368: default:
1369: run_err("%s: not a regular file", name);
1370: goto next;
1371: }
1372: if ((last = strrchr(name, '/')) == NULL)
1373: last = name;
1374: else
1375: ++last;
1.11 aaron 1376: curfile = last;
1.1 deraadt 1377: if (pflag) {
1.176 guenther 1378: if (do_times(remout, verbose_mode, &stb) < 0)
1.1 deraadt 1379: goto next;
1380: }
1381: #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
1.61 markus 1382: snprintf(buf, sizeof buf, "C%04o %lld %s\n",
1.47 markus 1383: (u_int) (stb.st_mode & FILEMODEMASK),
1.62 markus 1384: (long long)stb.st_size, last);
1.186 schwarze 1385: if (verbose_mode)
1386: fmprintf(stderr, "Sending file modes: %s", buf);
1.107 deraadt 1387: (void) atomicio(vwrite, remout, buf, strlen(buf));
1.1 deraadt 1388: if (response() < 0)
1389: goto next;
1.161 djm 1390: if ((bp = allocbuf(&buffer, fd, COPY_BUFLEN)) == NULL) {
1.127 deraadt 1391: next: if (fd != -1) {
1392: (void) close(fd);
1393: fd = -1;
1394: }
1.1 deraadt 1395: continue;
1396: }
1.97 fgsch 1397: if (showprogress)
1398: start_progress_meter(curfile, stb.st_size, &statbytes);
1.161 djm 1399: set_nonblock(remout);
1.1 deraadt 1400: for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
1401: amt = bp->cnt;
1.163 dtucker 1402: if (i + (off_t)amt > stb.st_size)
1.1 deraadt 1403: amt = stb.st_size - i;
1404: if (!haderr) {
1.180 djm 1405: if ((nr = atomicio(read, fd,
1406: bp->buf, amt)) != amt) {
1.122 avsm 1407: haderr = errno;
1.180 djm 1408: memset(bp->buf + nr, 0, amt - nr);
1409: }
1.1 deraadt 1410: }
1.161 djm 1411: /* Keep writing after error to retain sync */
1412: if (haderr) {
1413: (void)atomicio(vwrite, remout, bp->buf, amt);
1.180 djm 1414: memset(bp->buf, 0, amt);
1.161 djm 1415: continue;
1.1 deraadt 1416: }
1.167 djm 1417: if (atomicio6(vwrite, remout, bp->buf, amt, scpio,
1.161 djm 1418: &statbytes) != amt)
1419: haderr = errno;
1.1 deraadt 1420: }
1.161 djm 1421: unset_nonblock(remout);
1.4 aaron 1422:
1.127 deraadt 1423: if (fd != -1) {
1.205 deraadt 1424: if (close(fd) == -1 && !haderr)
1.127 deraadt 1425: haderr = errno;
1426: fd = -1;
1427: }
1.1 deraadt 1428: if (!haderr)
1.107 deraadt 1429: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 1430: else
1431: run_err("%s: %s", name, strerror(haderr));
1.18 markus 1432: (void) response();
1.185 dtucker 1433: if (showprogress)
1434: stop_progress_meter();
1.1 deraadt 1435: }
1436: }
1437:
1438: void
1.104 djm 1439: rsource(char *name, struct stat *statp)
1.1 deraadt 1440: {
1441: DIR *dirp;
1442: struct dirent *dp;
1.181 deraadt 1443: char *last, *vect[1], path[PATH_MAX];
1.1 deraadt 1444:
1445: if (!(dirp = opendir(name))) {
1446: run_err("%s: %s", name, strerror(errno));
1447: return;
1448: }
1449: last = strrchr(name, '/');
1.183 mmcc 1450: if (last == NULL)
1.1 deraadt 1451: last = name;
1452: else
1453: last++;
1454: if (pflag) {
1.176 guenther 1455: if (do_times(remout, verbose_mode, statp) < 0) {
1.1 deraadt 1456: closedir(dirp);
1457: return;
1458: }
1459: }
1.55 deraadt 1460: (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n",
1.47 markus 1461: (u_int) (statp->st_mode & FILEMODEMASK), 0, last);
1.18 markus 1462: if (verbose_mode)
1.186 schwarze 1463: fmprintf(stderr, "Entering directory: %s", path);
1.107 deraadt 1464: (void) atomicio(vwrite, remout, path, strlen(path));
1.1 deraadt 1465: if (response() < 0) {
1466: closedir(dirp);
1467: return;
1468: }
1.63 stevesk 1469: while ((dp = readdir(dirp)) != NULL) {
1.1 deraadt 1470: if (dp->d_ino == 0)
1471: continue;
1472: if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
1473: continue;
1474: if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) {
1475: run_err("%s/%s: name too long", name, dp->d_name);
1476: continue;
1477: }
1.55 deraadt 1478: (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name);
1.1 deraadt 1479: vect[0] = path;
1480: source(1, vect);
1481: }
1.18 markus 1482: (void) closedir(dirp);
1.107 deraadt 1483: (void) atomicio(vwrite, remout, "E\n", 2);
1.18 markus 1484: (void) response();
1.1 deraadt 1485: }
1486:
1.216 djm 1487: void
1488: sink_sftp(int argc, char *dst, const char *src, struct sftp_conn *conn)
1489: {
1490: char *abs_src = NULL;
1491: char *abs_dst = NULL;
1492: glob_t g;
1.228 djm 1493: char *filename, *tmp = NULL;
1.243 djm 1494: int i, r, err = 0, dst_is_dir;
1495: struct stat st;
1.216 djm 1496:
1.226 djm 1497: memset(&g, 0, sizeof(g));
1.243 djm 1498:
1.216 djm 1499: /*
1500: * Here, we need remote glob as SFTP can not depend on remote shell
1501: * expansions
1502: */
1.228 djm 1503: if ((abs_src = prepare_remote_path(conn, src)) == NULL) {
1.226 djm 1504: err = -1;
1505: goto out;
1506: }
1.216 djm 1507:
1508: debug3_f("copying remote %s to local %s", abs_src, dst);
1.249 djm 1509: if ((r = remote_glob(conn, abs_src, GLOB_NOCHECK|GLOB_MARK,
1510: NULL, &g)) != 0) {
1.216 djm 1511: if (r == GLOB_NOSPACE)
1.244 djm 1512: error("%s: too many glob matches", src);
1.216 djm 1513: else
1.244 djm 1514: error("%s: %s", src, strerror(ENOENT));
1.216 djm 1515: err = -1;
1516: goto out;
1517: }
1518:
1.249 djm 1519: /* Did we actually get any matches back from the glob? */
1520: if (g.gl_matchc == 0 && g.gl_pathc == 1 && g.gl_pathv[0] != 0) {
1521: /*
1522: * If nothing matched but a path returned, then it's probably
1523: * a GLOB_NOCHECK result. Check whether the unglobbed path
1524: * exists so we can give a nice error message early.
1525: */
1526: if (do_stat(conn, g.gl_pathv[0], 1) == NULL) {
1527: error("%s: %s", src, strerror(ENOENT));
1528: err = -1;
1529: goto out;
1530: }
1531: }
1532:
1.243 djm 1533: if ((r = stat(dst, &st)) != 0)
1534: debug2_f("stat local \"%s\": %s", dst, strerror(errno));
1535: dst_is_dir = r == 0 && S_ISDIR(st.st_mode);
1536:
1537: if (g.gl_matchc > 1 && !dst_is_dir) {
1538: if (r == 0) {
1539: error("Multiple files match pattern, but destination "
1540: "\"%s\" is not a directory", dst);
1541: err = -1;
1542: goto out;
1543: }
1544: debug2_f("creating destination \"%s\"", dst);
1545: if (mkdir(dst, 0777) != 0) {
1546: error("local mkdir \"%s\": %s", dst, strerror(errno));
1547: err = -1;
1548: goto out;
1549: }
1550: dst_is_dir = 1;
1.216 djm 1551: }
1552:
1553: for (i = 0; g.gl_pathv[i] && !interrupted; i++) {
1554: tmp = xstrdup(g.gl_pathv[i]);
1555: if ((filename = basename(tmp)) == NULL) {
1556: error("basename %s: %s", tmp, strerror(errno));
1557: err = -1;
1558: goto out;
1559: }
1560:
1.243 djm 1561: if (dst_is_dir)
1.216 djm 1562: abs_dst = path_append(dst, filename);
1563: else
1564: abs_dst = xstrdup(dst);
1565:
1566: debug("Fetching %s to %s\n", g.gl_pathv[i], abs_dst);
1567: if (globpath_is_dir(g.gl_pathv[i]) && iamrecursive) {
1568: if (download_dir(conn, g.gl_pathv[i], abs_dst, NULL,
1.248 djm 1569: pflag, SFTP_PROGRESS_ONLY, 0, 0, 1, 1) == -1)
1.216 djm 1570: err = -1;
1571: } else {
1572: if (do_download(conn, g.gl_pathv[i], abs_dst, NULL,
1.248 djm 1573: pflag, 0, 0, 1) == -1)
1.216 djm 1574: err = -1;
1575: }
1576: free(abs_dst);
1577: abs_dst = NULL;
1.217 dtucker 1578: free(tmp);
1579: tmp = NULL;
1.216 djm 1580: }
1581:
1582: out:
1583: free(abs_src);
1.217 dtucker 1584: free(tmp);
1.216 djm 1585: globfree(&g);
1.235 djm 1586: if (err == -1)
1.234 djm 1587: errs = 1;
1.216 djm 1588: }
1589:
1590:
1.189 millert 1591: #define TYPE_OVERFLOW(type, val) \
1592: ((sizeof(type) == 4 && (val) > INT32_MAX) || \
1593: (sizeof(type) == 8 && (val) > INT64_MAX) || \
1594: (sizeof(type) != 4 && sizeof(type) != 8))
1595:
1.1 deraadt 1596: void
1.202 djm 1597: sink(int argc, char **argv, const char *src)
1.1 deraadt 1598: {
1599: static BUF buffer;
1600: struct stat stb;
1601: BUF *bp;
1.122 avsm 1602: off_t i;
1.124 djm 1603: size_t j, count;
1.140 deraadt 1604: int amt, exists, first, ofd;
1605: mode_t mode, omode, mask;
1.97 fgsch 1606: off_t size, statbytes;
1.176 guenther 1607: unsigned long long ull;
1.209 djm 1608: int setimes, targisdir, wrerr;
1.186 schwarze 1609: char ch, *cp, *np, *targ, *why, *vect[1], buf[2048], visbuf[2048];
1.204 djm 1610: char **patterns = NULL;
1611: size_t n, npatterns = 0;
1.40 markus 1612: struct timeval tv[2];
1.1 deraadt 1613:
1.66 stevesk 1614: #define atime tv[0]
1615: #define mtime tv[1]
1.118 deraadt 1616: #define SCREWUP(str) { why = str; goto screwup; }
1.1 deraadt 1617:
1.189 millert 1618: if (TYPE_OVERFLOW(time_t, 0) || TYPE_OVERFLOW(off_t, 0))
1619: SCREWUP("Unexpected off_t/time_t size");
1620:
1.1 deraadt 1621: setimes = targisdir = 0;
1622: mask = umask(0);
1623: if (!pflag)
1.18 markus 1624: (void) umask(mask);
1.1 deraadt 1625: if (argc != 1) {
1626: run_err("ambiguous target");
1627: exit(1);
1628: }
1629: targ = *argv;
1630: if (targetshouldbedirectory)
1631: verifydir(targ);
1.18 markus 1632:
1.107 deraadt 1633: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 1634: if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
1635: targisdir = 1;
1.202 djm 1636: if (src != NULL && !iamrecursive && !Tflag) {
1637: /*
1638: * Prepare to try to restrict incoming filenames to match
1639: * the requested destination file glob.
1640: */
1.204 djm 1641: if (brace_expand(src, &patterns, &npatterns) != 0)
1.213 djm 1642: fatal_f("could not expand pattern");
1.202 djm 1643: }
1.1 deraadt 1644: for (first = 1;; first = 0) {
1645: cp = buf;
1.122 avsm 1646: if (atomicio(read, remin, cp, 1) != 1)
1.204 djm 1647: goto done;
1.1 deraadt 1648: if (*cp++ == '\n')
1649: SCREWUP("unexpected <newline>");
1650: do {
1.30 deraadt 1651: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 1652: SCREWUP("lost connection");
1653: *cp++ = ch;
1654: } while (cp < &buf[sizeof(buf) - 1] && ch != '\n');
1655: *cp = 0;
1.114 markus 1656: if (verbose_mode)
1.186 schwarze 1657: fmprintf(stderr, "Sink: %s", buf);
1.1 deraadt 1658:
1659: if (buf[0] == '\01' || buf[0] == '\02') {
1.186 schwarze 1660: if (iamremote == 0) {
1661: (void) snmprintf(visbuf, sizeof(visbuf),
1662: NULL, "%s", buf + 1);
1.107 deraadt 1663: (void) atomicio(vwrite, STDERR_FILENO,
1.186 schwarze 1664: visbuf, strlen(visbuf));
1665: }
1.1 deraadt 1666: if (buf[0] == '\02')
1667: exit(1);
1668: ++errs;
1669: continue;
1670: }
1671: if (buf[0] == 'E') {
1.107 deraadt 1672: (void) atomicio(vwrite, remout, "", 1);
1.204 djm 1673: goto done;
1.1 deraadt 1674: }
1675: if (ch == '\n')
1676: *--cp = 0;
1677:
1678: cp = buf;
1679: if (*cp == 'T') {
1680: setimes++;
1681: cp++;
1.176 guenther 1682: if (!isdigit((unsigned char)*cp))
1683: SCREWUP("mtime.sec not present");
1684: ull = strtoull(cp, &cp, 10);
1.66 stevesk 1685: if (!cp || *cp++ != ' ')
1.1 deraadt 1686: SCREWUP("mtime.sec not delimited");
1.189 millert 1687: if (TYPE_OVERFLOW(time_t, ull))
1.176 guenther 1688: setimes = 0; /* out of range */
1689: mtime.tv_sec = ull;
1.66 stevesk 1690: mtime.tv_usec = strtol(cp, &cp, 10);
1.176 guenther 1691: if (!cp || *cp++ != ' ' || mtime.tv_usec < 0 ||
1692: mtime.tv_usec > 999999)
1.1 deraadt 1693: SCREWUP("mtime.usec not delimited");
1.176 guenther 1694: if (!isdigit((unsigned char)*cp))
1695: SCREWUP("atime.sec not present");
1696: ull = strtoull(cp, &cp, 10);
1.66 stevesk 1697: if (!cp || *cp++ != ' ')
1.1 deraadt 1698: SCREWUP("atime.sec not delimited");
1.189 millert 1699: if (TYPE_OVERFLOW(time_t, ull))
1.176 guenther 1700: setimes = 0; /* out of range */
1701: atime.tv_sec = ull;
1.66 stevesk 1702: atime.tv_usec = strtol(cp, &cp, 10);
1.176 guenther 1703: if (!cp || *cp++ != '\0' || atime.tv_usec < 0 ||
1704: atime.tv_usec > 999999)
1.1 deraadt 1705: SCREWUP("atime.usec not delimited");
1.107 deraadt 1706: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 1707: continue;
1708: }
1709: if (*cp != 'C' && *cp != 'D') {
1710: /*
1711: * Check for the case "rcp remote:foo\* local:bar".
1712: * In this case, the line "No match." can be returned
1713: * by the shell before the rcp command on the remote is
1714: * executed so the ^Aerror_message convention isn't
1715: * followed.
1716: */
1717: if (first) {
1718: run_err("%s", cp);
1719: exit(1);
1720: }
1721: SCREWUP("expected control record");
1722: }
1723: mode = 0;
1724: for (++cp; cp < buf + 5; cp++) {
1725: if (*cp < '0' || *cp > '7')
1726: SCREWUP("bad mode");
1727: mode = (mode << 3) | (*cp - '0');
1728: }
1.197 dtucker 1729: if (!pflag)
1730: mode &= ~mask;
1.1 deraadt 1731: if (*cp++ != ' ')
1732: SCREWUP("mode not delimited");
1733:
1.188 millert 1734: if (!isdigit((unsigned char)*cp))
1735: SCREWUP("size not present");
1736: ull = strtoull(cp, &cp, 10);
1737: if (!cp || *cp++ != ' ')
1.1 deraadt 1738: SCREWUP("size not delimited");
1.189 millert 1739: if (TYPE_OVERFLOW(off_t, ull))
1.188 millert 1740: SCREWUP("size out of range");
1741: size = (off_t)ull;
1742:
1.198 djm 1743: if (*cp == '\0' || strchr(cp, '/') != NULL ||
1744: strcmp(cp, ".") == 0 || strcmp(cp, "..") == 0) {
1.114 markus 1745: run_err("error: unexpected filename: %s", cp);
1746: exit(1);
1747: }
1.204 djm 1748: if (npatterns > 0) {
1749: for (n = 0; n < npatterns; n++) {
1.249 djm 1750: if (strcmp(patterns[n], cp) == 0 ||
1751: fnmatch(patterns[n], cp, 0) == 0)
1.204 djm 1752: break;
1753: }
1754: if (n >= npatterns)
1755: SCREWUP("filename does not match request");
1756: }
1.1 deraadt 1757: if (targisdir) {
1758: static char *namebuf;
1.124 djm 1759: static size_t cursize;
1.1 deraadt 1760: size_t need;
1761:
1762: need = strlen(targ) + strlen(cp) + 250;
1.55 deraadt 1763: if (need > cursize) {
1.173 djm 1764: free(namebuf);
1.18 markus 1765: namebuf = xmalloc(need);
1.55 deraadt 1766: cursize = need;
1767: }
1768: (void) snprintf(namebuf, need, "%s%s%s", targ,
1.88 mouring 1769: strcmp(targ, "/") ? "/" : "", cp);
1.1 deraadt 1770: np = namebuf;
1771: } else
1772: np = targ;
1.12 aaron 1773: curfile = cp;
1.1 deraadt 1774: exists = stat(np, &stb) == 0;
1775: if (buf[0] == 'D') {
1776: int mod_flag = pflag;
1.114 markus 1777: if (!iamrecursive)
1778: SCREWUP("received directory without -r");
1.1 deraadt 1779: if (exists) {
1780: if (!S_ISDIR(stb.st_mode)) {
1781: errno = ENOTDIR;
1782: goto bad;
1783: }
1784: if (pflag)
1.18 markus 1785: (void) chmod(np, mode);
1.1 deraadt 1786: } else {
1.214 djm 1787: /* Handle copying from a read-only directory */
1.1 deraadt 1788: mod_flag = 1;
1.205 deraadt 1789: if (mkdir(np, mode | S_IRWXU) == -1)
1.1 deraadt 1790: goto bad;
1791: }
1.58 danh 1792: vect[0] = xstrdup(np);
1.202 djm 1793: sink(1, vect, src);
1.1 deraadt 1794: if (setimes) {
1795: setimes = 0;
1.210 djm 1796: (void) utimes(vect[0], tv);
1.1 deraadt 1797: }
1798: if (mod_flag)
1.59 deraadt 1799: (void) chmod(vect[0], mode);
1.173 djm 1800: free(vect[0]);
1.1 deraadt 1801: continue;
1802: }
1803: omode = mode;
1.174 dtucker 1804: mode |= S_IWUSR;
1.205 deraadt 1805: if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) == -1) {
1.1 deraadt 1806: bad: run_err("%s: %s", np, strerror(errno));
1807: continue;
1808: }
1.107 deraadt 1809: (void) atomicio(vwrite, remout, "", 1);
1.161 djm 1810: if ((bp = allocbuf(&buffer, ofd, COPY_BUFLEN)) == NULL) {
1.18 markus 1811: (void) close(ofd);
1.1 deraadt 1812: continue;
1813: }
1814: cp = bp->buf;
1.209 djm 1815: wrerr = 0;
1.7 deraadt 1816:
1.209 djm 1817: /*
1818: * NB. do not use run_err() unless immediately followed by
1819: * exit() below as it may send a spurious reply that might
1820: * desyncronise us from the peer. Use note_err() instead.
1821: */
1.12 aaron 1822: statbytes = 0;
1.97 fgsch 1823: if (showprogress)
1824: start_progress_meter(curfile, size, &statbytes);
1.161 djm 1825: set_nonblock(remin);
1826: for (count = i = 0; i < size; i += bp->cnt) {
1827: amt = bp->cnt;
1.1 deraadt 1828: if (i + amt > size)
1829: amt = size - i;
1830: count += amt;
1831: do {
1.167 djm 1832: j = atomicio6(read, remin, cp, amt,
1833: scpio, &statbytes);
1.122 avsm 1834: if (j == 0) {
1.161 djm 1835: run_err("%s", j != EPIPE ?
1836: strerror(errno) :
1.63 stevesk 1837: "dropped connection");
1.1 deraadt 1838: exit(1);
1839: }
1840: amt -= j;
1841: cp += j;
1842: } while (amt > 0);
1.112 djm 1843:
1.1 deraadt 1844: if (count == bp->cnt) {
1845: /* Keep reading so we stay sync'd up. */
1.209 djm 1846: if (!wrerr) {
1.122 avsm 1847: if (atomicio(vwrite, ofd, bp->buf,
1848: count) != count) {
1.209 djm 1849: note_err("%s: %s", np,
1850: strerror(errno));
1851: wrerr = 1;
1.1 deraadt 1852: }
1853: }
1854: count = 0;
1855: cp = bp->buf;
1856: }
1857: }
1.161 djm 1858: unset_nonblock(remin);
1.209 djm 1859: if (count != 0 && !wrerr &&
1.122 avsm 1860: atomicio(vwrite, ofd, bp->buf, count) != count) {
1.209 djm 1861: note_err("%s: %s", np, strerror(errno));
1862: wrerr = 1;
1.1 deraadt 1863: }
1.209 djm 1864: if (!wrerr && (!exists || S_ISREG(stb.st_mode)) &&
1865: ftruncate(ofd, size) != 0)
1866: note_err("%s: truncate: %s", np, strerror(errno));
1.1 deraadt 1867: if (pflag) {
1868: if (exists || omode != mode)
1.116 dtucker 1869: if (fchmod(ofd, omode)) {
1.209 djm 1870: note_err("%s: set mode: %s",
1.63 stevesk 1871: np, strerror(errno));
1.116 dtucker 1872: }
1.1 deraadt 1873: } else {
1874: if (!exists && omode != mode)
1.116 dtucker 1875: if (fchmod(ofd, omode & ~mask)) {
1.209 djm 1876: note_err("%s: set mode: %s",
1.63 stevesk 1877: np, strerror(errno));
1.116 dtucker 1878: }
1.1 deraadt 1879: }
1.209 djm 1880: if (close(ofd) == -1)
1.211 millert 1881: note_err("%s: close: %s", np, strerror(errno));
1.18 markus 1882: (void) response();
1.185 dtucker 1883: if (showprogress)
1884: stop_progress_meter();
1.209 djm 1885: if (setimes && !wrerr) {
1.1 deraadt 1886: setimes = 0;
1.205 deraadt 1887: if (utimes(np, tv) == -1) {
1.209 djm 1888: note_err("%s: set times: %s",
1.63 stevesk 1889: np, strerror(errno));
1.1 deraadt 1890: }
1891: }
1.209 djm 1892: /* If no error was noted then signal success for this file */
1893: if (note_err(NULL) == 0)
1.107 deraadt 1894: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 1895: }
1.204 djm 1896: done:
1897: for (n = 0; n < npatterns; n++)
1898: free(patterns[n]);
1899: free(patterns);
1900: return;
1.1 deraadt 1901: screwup:
1.204 djm 1902: for (n = 0; n < npatterns; n++)
1903: free(patterns[n]);
1904: free(patterns);
1.1 deraadt 1905: run_err("protocol error: %s", why);
1906: exit(1);
1.219 djm 1907: }
1908:
1909: void
1910: throughlocal_sftp(struct sftp_conn *from, struct sftp_conn *to,
1.228 djm 1911: char *src, char *targ)
1.219 djm 1912: {
1913: char *target = NULL, *filename = NULL, *abs_dst = NULL;
1.228 djm 1914: char *abs_src = NULL, *tmp = NULL;
1.219 djm 1915: glob_t g;
1916: int i, r, targetisdir, err = 0;
1917:
1918: if ((filename = basename(src)) == NULL)
1919: fatal("basename %s: %s", src, strerror(errno));
1920:
1.228 djm 1921: if ((abs_src = prepare_remote_path(from, src)) == NULL ||
1922: (target = prepare_remote_path(to, targ)) == NULL)
1.226 djm 1923: cleanup_exit(255);
1.219 djm 1924: memset(&g, 0, sizeof(g));
1925:
1926: targetisdir = remote_is_dir(to, target);
1927: if (!targetisdir && targetshouldbedirectory) {
1.244 djm 1928: error("%s: destination is not a directory", targ);
1.219 djm 1929: err = -1;
1930: goto out;
1931: }
1932:
1933: debug3_f("copying remote %s to remote %s", abs_src, target);
1.249 djm 1934: if ((r = remote_glob(from, abs_src, GLOB_NOCHECK|GLOB_MARK,
1935: NULL, &g)) != 0) {
1.219 djm 1936: if (r == GLOB_NOSPACE)
1.244 djm 1937: error("%s: too many glob matches", src);
1.219 djm 1938: else
1.244 djm 1939: error("%s: %s", src, strerror(ENOENT));
1.219 djm 1940: err = -1;
1941: goto out;
1.249 djm 1942: }
1943:
1944: /* Did we actually get any matches back from the glob? */
1945: if (g.gl_matchc == 0 && g.gl_pathc == 1 && g.gl_pathv[0] != 0) {
1946: /*
1947: * If nothing matched but a path returned, then it's probably
1948: * a GLOB_NOCHECK result. Check whether the unglobbed path
1949: * exists so we can give a nice error message early.
1950: */
1951: if (do_stat(from, g.gl_pathv[0], 1) == NULL) {
1952: error("%s: %s", src, strerror(ENOENT));
1953: err = -1;
1954: goto out;
1955: }
1.219 djm 1956: }
1957:
1958: for (i = 0; g.gl_pathv[i] && !interrupted; i++) {
1959: tmp = xstrdup(g.gl_pathv[i]);
1960: if ((filename = basename(tmp)) == NULL) {
1961: error("basename %s: %s", tmp, strerror(errno));
1962: err = -1;
1963: goto out;
1964: }
1965:
1966: if (targetisdir)
1967: abs_dst = path_append(target, filename);
1968: else
1969: abs_dst = xstrdup(target);
1970:
1971: debug("Fetching %s to %s\n", g.gl_pathv[i], abs_dst);
1972: if (globpath_is_dir(g.gl_pathv[i]) && iamrecursive) {
1973: if (crossload_dir(from, to, g.gl_pathv[i], abs_dst,
1.221 djm 1974: NULL, pflag, SFTP_PROGRESS_ONLY, 1) == -1)
1.219 djm 1975: err = -1;
1976: } else {
1977: if (do_crossload(from, to, g.gl_pathv[i], abs_dst, NULL,
1978: pflag) == -1)
1979: err = -1;
1980: }
1981: free(abs_dst);
1982: abs_dst = NULL;
1983: free(tmp);
1984: tmp = NULL;
1985: }
1986:
1987: out:
1988: free(abs_src);
1989: free(abs_dst);
1990: free(target);
1991: free(tmp);
1992: globfree(&g);
1993: if (err == -1)
1.235 djm 1994: errs = 1;
1.1 deraadt 1995: }
1996:
1997: int
1.86 itojun 1998: response(void)
1.1 deraadt 1999: {
1.186 schwarze 2000: char ch, *cp, resp, rbuf[2048], visbuf[2048];
1.1 deraadt 2001:
1.30 deraadt 2002: if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp))
1.1 deraadt 2003: lostconn(0);
2004:
2005: cp = rbuf;
1.18 markus 2006: switch (resp) {
2007: case 0: /* ok */
1.1 deraadt 2008: return (0);
2009: default:
2010: *cp++ = resp;
2011: /* FALLTHROUGH */
1.18 markus 2012: case 1: /* error, followed by error msg */
2013: case 2: /* fatal error, "" */
1.1 deraadt 2014: do {
1.30 deraadt 2015: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 2016: lostconn(0);
2017: *cp++ = ch;
2018: } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n');
2019:
1.186 schwarze 2020: if (!iamremote) {
2021: cp[-1] = '\0';
2022: (void) snmprintf(visbuf, sizeof(visbuf),
2023: NULL, "%s\n", rbuf);
2024: (void) atomicio(vwrite, STDERR_FILENO,
2025: visbuf, strlen(visbuf));
2026: }
1.1 deraadt 2027: ++errs;
2028: if (resp == 1)
2029: return (-1);
2030: exit(1);
2031: }
2032: /* NOTREACHED */
2033: }
2034:
2035: void
1.86 itojun 2036: usage(void)
1.1 deraadt 2037: {
1.83 stevesk 2038: (void) fprintf(stderr,
1.239 djm 2039: "usage: scp [-346ABCOpqRrsTv] [-c cipher] [-D sftp_server_path] [-F ssh_config]\n"
1.251 ! jmc 2040: " [-i identity_file] [-J destination] [-l limit] [-o ssh_option]\n"
! 2041: " [-P port] [-S program] [-X sftp_option] source ... target\n");
1.1 deraadt 2042: exit(1);
2043: }
2044:
2045: void
1.18 markus 2046: run_err(const char *fmt,...)
1.1 deraadt 2047: {
2048: static FILE *fp;
2049: va_list ap;
2050:
2051: ++errs;
1.136 biorn 2052: if (fp != NULL || (remout != -1 && (fp = fdopen(remout, "w")))) {
2053: (void) fprintf(fp, "%c", 0x01);
2054: (void) fprintf(fp, "scp: ");
2055: va_start(ap, fmt);
2056: (void) vfprintf(fp, fmt, ap);
2057: va_end(ap);
2058: (void) fprintf(fp, "\n");
2059: (void) fflush(fp);
2060: }
1.18 markus 2061:
2062: if (!iamremote) {
1.73 markus 2063: va_start(ap, fmt);
1.186 schwarze 2064: vfmprintf(stderr, fmt, ap);
1.73 markus 2065: va_end(ap);
1.18 markus 2066: fprintf(stderr, "\n");
2067: }
1.209 djm 2068: }
2069:
2070: /*
2071: * Notes a sink error for sending at the end of a file transfer. Returns 0 if
2072: * no error has been noted or -1 otherwise. Use note_err(NULL) to flush
2073: * any active error at the end of the transfer.
2074: */
2075: int
2076: note_err(const char *fmt, ...)
2077: {
2078: static char *emsg;
2079: va_list ap;
2080:
2081: /* Replay any previously-noted error */
2082: if (fmt == NULL) {
2083: if (emsg == NULL)
2084: return 0;
2085: run_err("%s", emsg);
2086: free(emsg);
2087: emsg = NULL;
2088: return -1;
2089: }
2090:
2091: errs++;
2092: /* Prefer first-noted error */
2093: if (emsg != NULL)
2094: return -1;
2095:
2096: va_start(ap, fmt);
2097: vasnmprintf(&emsg, INT_MAX, NULL, fmt, ap);
2098: va_end(ap);
2099: return -1;
1.1 deraadt 2100: }
2101:
2102: void
1.104 djm 2103: verifydir(char *cp)
1.1 deraadt 2104: {
2105: struct stat stb;
2106:
2107: if (!stat(cp, &stb)) {
2108: if (S_ISDIR(stb.st_mode))
2109: return;
2110: errno = ENOTDIR;
2111: }
2112: run_err("%s: %s", cp, strerror(errno));
1.123 avsm 2113: killchild(0);
1.1 deraadt 2114: }
2115:
2116: int
1.104 djm 2117: okname(char *cp0)
1.1 deraadt 2118: {
2119: int c;
2120: char *cp;
2121:
2122: cp = cp0;
2123: do {
1.75 deraadt 2124: c = (int)*cp;
1.1 deraadt 2125: if (c & 0200)
2126: goto bad;
1.179 deraadt 2127: if (!isalpha(c) && !isdigit((unsigned char)c)) {
1.101 markus 2128: switch (c) {
2129: case '\'':
2130: case '"':
2131: case '`':
2132: case ' ':
2133: case '#':
2134: goto bad;
2135: default:
2136: break;
2137: }
2138: }
1.1 deraadt 2139: } while (*++cp);
2140: return (1);
2141:
1.186 schwarze 2142: bad: fmprintf(stderr, "%s: invalid user name\n", cp0);
1.1 deraadt 2143: return (0);
2144: }
2145:
2146: BUF *
1.104 djm 2147: allocbuf(BUF *bp, int fd, int blksize)
1.1 deraadt 2148: {
2149: size_t size;
2150: struct stat stb;
2151:
1.205 deraadt 2152: if (fstat(fd, &stb) == -1) {
1.1 deraadt 2153: run_err("fstat: %s", strerror(errno));
2154: return (0);
2155: }
1.187 deraadt 2156: size = ROUNDUP(stb.st_blksize, blksize);
1.95 markus 2157: if (size == 0)
1.18 markus 2158: size = blksize;
1.1 deraadt 2159: if (bp->cnt >= size)
2160: return (bp);
1.192 deraadt 2161: bp->buf = xrecallocarray(bp->buf, bp->cnt, size, 1);
1.1 deraadt 2162: bp->cnt = size;
2163: return (bp);
2164: }
2165:
2166: void
1.104 djm 2167: lostconn(int signo)
1.1 deraadt 2168: {
2169: if (!iamremote)
1.172 dtucker 2170: (void)write(STDERR_FILENO, "lost connection\n", 16);
1.74 markus 2171: if (signo)
2172: _exit(1);
2173: else
2174: exit(1);
1.225 djm 2175: }
2176:
2177: void
2178: cleanup_exit(int i)
2179: {
2180: if (remin > 0)
2181: close(remin);
2182: if (remout > 0)
2183: close(remout);
2184: if (remin2 > 0)
2185: close(remin2);
2186: if (remout2 > 0)
2187: close(remout2);
2188: if (do_cmd_pid > 0)
2189: waitpid(do_cmd_pid, NULL, 0);
2190: if (do_cmd_pid2 > 0)
2191: waitpid(do_cmd_pid2, NULL, 0);
2192: exit(i);
1.4 aaron 2193: }
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