Annotation of src/usr.bin/ssh/scp.c, Revision 1.259
1.259 ! djm 1: /* $OpenBSD: scp.c,v 1.258 2023/09/08 05:56:13 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:
1.259 ! djm 161: int sftp_glob(struct sftp_conn *, const char *, int,
1.216 djm 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);
1.255 dtucker 169: (void)waitpid(do_cmd_pid, NULL, 0);
1.119 dtucker 170: }
1.219 djm 171: if (do_cmd_pid2 > 1) {
172: kill(do_cmd_pid2, signo ? signo : SIGTERM);
1.255 dtucker 173: (void)waitpid(do_cmd_pid2, NULL, 0);
1.219 djm 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: {
1.252 millert 254: int sv[2];
1.18 markus 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:
1.18 markus 265: /* Create a socket pair for communicating with ssh. */
1.252 millert 266: if (socketpair(AF_UNIX, SOCK_STREAM, 0, sv) == -1)
267: fatal("socketpair: %s", strerror(errno));
1.166 millert 268:
1.207 dtucker 269: ssh_signal(SIGTSTP, suspchild);
270: ssh_signal(SIGTTIN, suspchild);
271: ssh_signal(SIGTTOU, suspchild);
1.18 markus 272:
1.106 nino 273: /* Fork a child to execute the command on the remote host using ssh. */
1.219 djm 274: *pid = fork();
1.252 millert 275: switch (*pid) {
276: case -1:
277: fatal("fork: %s", strerror(errno));
278: case 0:
1.18 markus 279: /* Child. */
1.252 millert 280: if (dup2(sv[0], STDIN_FILENO) == -1 ||
281: dup2(sv[0], STDOUT_FILENO) == -1) {
282: perror("dup2");
283: _exit(1);
284: }
285: close(sv[0]);
286: close(sv[1]);
1.216 djm 287: replacearg(&args, 0, "%s", program);
1.193 millert 288: if (port != -1) {
289: addargs(&args, "-p");
290: addargs(&args, "%d", port);
291: }
1.165 guenther 292: if (remuser != NULL) {
293: addargs(&args, "-l");
294: addargs(&args, "%s", remuser);
295: }
1.231 naddy 296: if (subsystem)
297: addargs(&args, "-s");
1.165 guenther 298: addargs(&args, "--");
1.70 mouring 299: addargs(&args, "%s", host);
300: addargs(&args, "%s", cmd);
1.18 markus 301:
1.216 djm 302: execvp(program, args.list);
303: perror(program);
1.252 millert 304: _exit(1);
305: default:
306: /* Parent. Close the other side, and return the local side. */
307: close(sv[0]);
308: *fdin = sv[1];
309: *fdout = sv[1];
310: ssh_signal(SIGTERM, killchild);
311: ssh_signal(SIGINT, killchild);
312: ssh_signal(SIGHUP, killchild);
313: return 0;
1.18 markus 314: }
1.1 deraadt 315: }
316:
1.169 markus 317: /*
1.196 djm 318: * This function executes a command similar to do_cmd(), but expects the
1.169 markus 319: * input and output descriptors to be setup by a previous call to do_cmd().
320: * This way the input and output of two commands can be connected.
321: */
322: int
1.219 djm 323: do_cmd2(char *host, char *remuser, int port, char *cmd,
324: int fdin, int fdout)
1.169 markus 325: {
1.219 djm 326: int status;
1.169 markus 327: pid_t pid;
328:
329: if (verbose_mode)
1.186 schwarze 330: fmprintf(stderr,
1.169 markus 331: "Executing: 2nd program %s host %s, user %s, command %s\n",
332: ssh_program, host,
333: remuser ? remuser : "(unspecified)", cmd);
334:
1.193 millert 335: if (port == -1)
336: port = sshport;
337:
1.169 markus 338: /* Fork a child to execute the command on the remote host using ssh. */
339: pid = fork();
340: if (pid == 0) {
1.253 dtucker 341: if (dup2(fdin, 0) == -1)
342: perror("dup2");
343: if (dup2(fdout, 1) == -1)
344: perror("dup2");
1.169 markus 345:
346: replacearg(&args, 0, "%s", ssh_program);
1.193 millert 347: if (port != -1) {
348: addargs(&args, "-p");
349: addargs(&args, "%d", port);
350: }
1.169 markus 351: if (remuser != NULL) {
352: addargs(&args, "-l");
353: addargs(&args, "%s", remuser);
354: }
1.208 markus 355: addargs(&args, "-oBatchMode=yes");
1.169 markus 356: addargs(&args, "--");
357: addargs(&args, "%s", host);
358: addargs(&args, "%s", cmd);
359:
360: execvp(ssh_program, args.list);
361: perror(ssh_program);
362: exit(1);
363: } else if (pid == -1) {
364: fatal("fork: %s", strerror(errno));
365: }
366: while (waitpid(pid, &status, 0) == -1)
367: if (errno != EINTR)
368: fatal("do_cmd2: waitpid: %s", strerror(errno));
369: return 0;
370: }
371:
1.1 deraadt 372: typedef struct {
1.124 djm 373: size_t cnt;
1.1 deraadt 374: char *buf;
375: } BUF;
376:
1.18 markus 377: BUF *allocbuf(BUF *, int, int);
378: void lostconn(int);
379: int okname(char *);
1.211 millert 380: void run_err(const char *,...)
381: __attribute__((__format__ (printf, 1, 2)))
382: __attribute__((__nonnull__ (1)));
383: int note_err(const char *,...)
384: __attribute__((__format__ (printf, 1, 2)));
1.18 markus 385: void verifydir(char *);
1.1 deraadt 386:
387: struct passwd *pwd;
1.18 markus 388: uid_t userid;
1.219 djm 389: int errs, remin, remout, remin2, remout2;
1.202 djm 390: int Tflag, pflag, iamremote, iamrecursive, targetshouldbedirectory;
1.1 deraadt 391:
392: #define CMDNEEDS 64
393: char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */
394:
1.216 djm 395: enum scp_mode_e {
396: MODE_SCP,
397: MODE_SFTP
398: };
399:
1.18 markus 400: int response(void);
401: void rsource(char *, struct stat *);
1.202 djm 402: void sink(int, char *[], const char *);
1.18 markus 403: void source(int, char *[]);
1.216 djm 404: void tolocal(int, char *[], enum scp_mode_e, char *sftp_direct);
405: void toremote(int, char *[], enum scp_mode_e, char *sftp_direct);
1.18 markus 406: void usage(void);
1.1 deraadt 407:
1.228 djm 408: void source_sftp(int, char *, char *, struct sftp_conn *);
1.216 djm 409: void sink_sftp(int, char *, const char *, struct sftp_conn *);
1.219 djm 410: void throughlocal_sftp(struct sftp_conn *, struct sftp_conn *,
1.228 djm 411: char *, char *);
1.216 djm 412:
1.1 deraadt 413: int
1.104 djm 414: main(int argc, char **argv)
1.1 deraadt 415: {
1.250 djm 416: int ch, fflag, tflag, status, r, n;
1.216 djm 417: char **newargv, *argv0;
1.167 djm 418: const char *errstr;
1.1 deraadt 419: extern char *optarg;
420: extern int optind;
1.246 deraadt 421: enum scp_mode_e mode = MODE_SFTP;
1.216 djm 422: char *sftp_direct = NULL;
1.250 djm 423: long long llv;
1.126 djm 424:
425: /* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */
426: sanitise_stdfd();
1.145 djm 427:
1.186 schwarze 428: setlocale(LC_CTYPE, "");
429:
1.145 djm 430: /* Copy argv, because we modify it */
1.216 djm 431: argv0 = argv[0];
1.187 deraadt 432: newargv = xcalloc(MAXIMUM(argc + 1, 1), sizeof(*newargv));
1.145 djm 433: for (n = 0; n < argc; n++)
434: newargv[n] = xstrdup(argv[n]);
435: argv = newargv;
1.1 deraadt 436:
1.235 djm 437: log_init(argv0, log_level, SYSLOG_FACILITY_USER, 2);
1.218 djm 438:
1.129 djm 439: memset(&args, '\0', sizeof(args));
1.168 djm 440: memset(&remote_remote_args, '\0', sizeof(remote_remote_args));
441: args.list = remote_remote_args.list = NULL;
1.129 djm 442: addargs(&args, "%s", ssh_program);
1.70 mouring 443: addargs(&args, "-x");
1.168 djm 444: addargs(&args, "-oPermitLocalCommand=no");
445: addargs(&args, "-oClearAllForwardings=yes");
1.195 djm 446: addargs(&args, "-oRemoteCommand=none");
447: addargs(&args, "-oRequestTTY=no");
1.41 markus 448:
1.202 djm 449: fflag = Tflag = tflag = 0;
450: while ((ch = getopt(argc, argv,
1.250 djm 451: "12346ABCTdfOpqRrstvD:F:J:M:P:S:c:i:l:o:X:")) != -1) {
1.18 markus 452: switch (ch) {
453: /* User-visible flags. */
1.100 markus 454: case '1':
1.190 djm 455: fatal("SSH protocol v.1 is no longer supported");
456: break;
1.100 markus 457: case '2':
1.190 djm 458: /* Ignored */
459: break;
1.212 djm 460: case 'A':
1.23 markus 461: case '4':
1.41 markus 462: case '6':
463: case 'C':
1.70 mouring 464: addargs(&args, "-%c", ch);
1.168 djm 465: addargs(&remote_remote_args, "-%c", ch);
1.41 markus 466: break;
1.216 djm 467: case 'D':
468: sftp_direct = optarg;
469: break;
1.169 markus 470: case '3':
471: throughlocal = 1;
472: break;
1.229 djm 473: case 'R':
474: throughlocal = 0;
475: break;
1.41 markus 476: case 'o':
477: case 'c':
478: case 'i':
1.83 stevesk 479: case 'F':
1.199 tb 480: case 'J':
1.168 djm 481: addargs(&remote_remote_args, "-%c", ch);
482: addargs(&remote_remote_args, "%s", optarg);
1.165 guenther 483: addargs(&args, "-%c", ch);
484: addargs(&args, "%s", optarg);
1.23 markus 485: break;
1.230 djm 486: case 'O':
487: mode = MODE_SCP;
488: break;
489: case 's':
490: mode = MODE_SFTP;
491: break;
1.41 markus 492: case 'P':
1.193 millert 493: sshport = a2port(optarg);
494: if (sshport <= 0)
495: fatal("bad port \"%s\"\n", optarg);
1.41 markus 496: break;
497: case 'B':
1.168 djm 498: addargs(&remote_remote_args, "-oBatchmode=yes");
499: addargs(&args, "-oBatchmode=yes");
1.23 markus 500: break;
1.99 markus 501: case 'l':
1.167 djm 502: limit_kbps = strtonum(optarg, 1, 100 * 1024 * 1024,
503: &errstr);
504: if (errstr != NULL)
1.99 markus 505: usage();
1.167 djm 506: limit_kbps *= 1024; /* kbps */
507: bandwidth_limit_init(&bwlimit, limit_kbps, COPY_BUFLEN);
1.99 markus 508: break;
1.1 deraadt 509: case 'p':
510: pflag = 1;
511: break;
512: case 'r':
513: iamrecursive = 1;
514: break;
1.34 deraadt 515: case 'S':
1.41 markus 516: ssh_program = xstrdup(optarg);
517: break;
518: case 'v':
1.72 markus 519: addargs(&args, "-v");
1.168 djm 520: addargs(&remote_remote_args, "-v");
1.216 djm 521: if (verbose_mode == 0)
522: log_level = SYSLOG_LEVEL_DEBUG1;
523: else if (log_level < SYSLOG_LEVEL_DEBUG3)
524: log_level++;
1.41 markus 525: verbose_mode = 1;
526: break;
527: case 'q':
1.111 dtucker 528: addargs(&args, "-q");
1.168 djm 529: addargs(&remote_remote_args, "-q");
1.41 markus 530: showprogress = 0;
1.34 deraadt 531: break;
1.250 djm 532: case 'X':
533: /* Please keep in sync with sftp.c -X */
534: if (strncmp(optarg, "buffer=", 7) == 0) {
535: r = scan_scaled(optarg + 7, &llv);
536: if (r == 0 && (llv <= 0 || llv > 256 * 1024)) {
537: r = -1;
538: errno = EINVAL;
539: }
540: if (r == -1) {
541: fatal("Invalid buffer size \"%s\": %s",
542: optarg + 7, strerror(errno));
543: }
544: sftp_copy_buflen = (size_t)llv;
545: } else if (strncmp(optarg, "nrequests=", 10) == 0) {
546: llv = strtonum(optarg + 10, 1, 256 * 1024,
547: &errstr);
548: if (errstr != NULL) {
549: fatal("Invalid number of requests "
550: "\"%s\": %s", optarg + 10, errstr);
551: }
552: sftp_nrequests = (size_t)llv;
553: } else {
554: fatal("Invalid -X option");
555: }
556: break;
1.34 deraadt 557:
1.18 markus 558: /* Server options. */
1.1 deraadt 559: case 'd':
560: targetshouldbedirectory = 1;
561: break;
1.18 markus 562: case 'f': /* "from" */
1.1 deraadt 563: iamremote = 1;
564: fflag = 1;
565: break;
1.18 markus 566: case 't': /* "to" */
1.1 deraadt 567: iamremote = 1;
568: tflag = 1;
569: break;
1.202 djm 570: case 'T':
571: Tflag = 1;
572: break;
1.1 deraadt 573: default:
574: usage();
575: }
1.202 djm 576: }
1.1 deraadt 577: argc -= optind;
578: argv += optind;
579:
1.235 djm 580: log_init(argv0, log_level, SYSLOG_FACILITY_USER, 2);
1.216 djm 581:
1.212 djm 582: /* Do this last because we want the user to be able to override it */
583: addargs(&args, "-oForwardAgent=no");
584:
1.218 djm 585: if (iamremote)
586: mode = MODE_SCP;
1.216 djm 587:
1.1 deraadt 588: if ((pwd = getpwuid(userid = getuid())) == NULL)
1.108 deraadt 589: fatal("unknown user %u", (u_int) userid);
1.1 deraadt 590:
1.156 djm 591: if (!isatty(STDOUT_FILENO))
1.7 deraadt 592: showprogress = 0;
1.184 deraadt 593:
594: if (pflag) {
595: /* Cannot pledge: -p allows setuid/setgid files... */
596: } else {
597: if (pledge("stdio rpath wpath cpath fattr tty proc exec",
598: NULL) == -1) {
599: perror("pledge");
600: exit(1);
601: }
602: }
1.7 deraadt 603:
1.1 deraadt 604: remin = STDIN_FILENO;
605: remout = STDOUT_FILENO;
606:
1.52 stevesk 607: if (fflag) {
1.18 markus 608: /* Follow "protocol", send data. */
609: (void) response();
1.1 deraadt 610: source(argc, argv);
611: exit(errs != 0);
612: }
1.18 markus 613: if (tflag) {
614: /* Receive data. */
1.202 djm 615: sink(argc, argv, NULL);
1.1 deraadt 616: exit(errs != 0);
617: }
618: if (argc < 2)
619: usage();
620: if (argc > 2)
621: targetshouldbedirectory = 1;
622:
623: remin = remout = -1;
1.92 markus 624: do_cmd_pid = -1;
1.1 deraadt 625: /* Command to be executed on remote system using "ssh". */
1.55 deraadt 626: (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s",
627: verbose_mode ? " -v" : "",
1.35 deraadt 628: iamrecursive ? " -r" : "", pflag ? " -p" : "",
629: targetshouldbedirectory ? " -d" : "");
1.1 deraadt 630:
1.207 dtucker 631: (void) ssh_signal(SIGPIPE, lostconn);
1.1 deraadt 632:
1.193 millert 633: if (colon(argv[argc - 1])) /* Dest is remote host. */
1.216 djm 634: toremote(argc, argv, mode, sftp_direct);
1.1 deraadt 635: else {
636: if (targetshouldbedirectory)
637: verifydir(argv[argc - 1]);
1.216 djm 638: tolocal(argc, argv, mode, sftp_direct); /* Dest is local host. */
1.92 markus 639: }
640: /*
641: * Finally check the exit status of the ssh process, if one was forked
1.164 stevesk 642: * and no error has occurred yet
1.92 markus 643: */
1.234 djm 644: if (do_cmd_pid != -1 && (mode == MODE_SFTP || errs == 0)) {
1.92 markus 645: if (remin != -1)
646: (void) close(remin);
647: if (remout != -1)
648: (void) close(remout);
649: if (waitpid(do_cmd_pid, &status, 0) == -1)
650: errs = 1;
651: else {
652: if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
653: errs = 1;
654: }
1.1 deraadt 655: }
656: exit(errs != 0);
657: }
658:
1.167 djm 659: /* Callback from atomicio6 to update progress meter and limit bandwidth */
660: static int
661: scpio(void *_cnt, size_t s)
1.161 djm 662: {
1.167 djm 663: off_t *cnt = (off_t *)_cnt;
664:
665: *cnt += s;
1.201 dtucker 666: refresh_progress_meter(0);
1.167 djm 667: if (limit_kbps > 0)
668: bandwidth_limit(&bwlimit, s);
669: return 0;
1.161 djm 670: }
671:
1.176 guenther 672: static int
673: do_times(int fd, int verb, const struct stat *sb)
674: {
675: /* strlen(2^64) == 20; strlen(10^6) == 7 */
676: char buf[(20 + 7 + 2) * 2 + 2];
677:
678: (void)snprintf(buf, sizeof(buf), "T%llu 0 %llu 0\n",
679: (unsigned long long) (sb->st_mtime < 0 ? 0 : sb->st_mtime),
680: (unsigned long long) (sb->st_atime < 0 ? 0 : sb->st_atime));
681: if (verb) {
682: fprintf(stderr, "File mtime %lld atime %lld\n",
683: (long long)sb->st_mtime, (long long)sb->st_atime);
684: fprintf(stderr, "Sending file timestamps: %s", buf);
685: }
686: (void) atomicio(vwrite, fd, buf, strlen(buf));
687: return (response());
688: }
689:
1.194 millert 690: static int
691: parse_scp_uri(const char *uri, char **userp, char **hostp, int *portp,
1.214 djm 692: char **pathp)
1.194 millert 693: {
694: int r;
695:
696: r = parse_uri("scp", uri, userp, hostp, portp, pathp);
697: if (r == 0 && *pathp == NULL)
698: *pathp = xstrdup(".");
699: return r;
700: }
701:
1.204 djm 702: /* Appends a string to an array; returns 0 on success, -1 on alloc failure */
703: static int
704: append(char *cp, char ***ap, size_t *np)
705: {
706: char **tmp;
707:
708: if ((tmp = reallocarray(*ap, *np + 1, sizeof(*tmp))) == NULL)
709: return -1;
710: tmp[(*np)] = cp;
711: (*np)++;
712: *ap = tmp;
713: return 0;
714: }
715:
716: /*
717: * Finds the start and end of the first brace pair in the pattern.
718: * returns 0 on success or -1 for invalid patterns.
719: */
720: static int
721: find_brace(const char *pattern, int *startp, int *endp)
722: {
723: int i;
724: int in_bracket, brace_level;
725:
726: *startp = *endp = -1;
727: in_bracket = brace_level = 0;
728: for (i = 0; i < INT_MAX && *endp < 0 && pattern[i] != '\0'; i++) {
729: switch (pattern[i]) {
730: case '\\':
731: /* skip next character */
732: if (pattern[i + 1] != '\0')
733: i++;
734: break;
735: case '[':
736: in_bracket = 1;
737: break;
738: case ']':
739: in_bracket = 0;
740: break;
741: case '{':
742: if (in_bracket)
743: break;
744: if (pattern[i + 1] == '}') {
745: /* Protect a single {}, for find(1), like csh */
746: i++; /* skip */
747: break;
748: }
749: if (*startp == -1)
750: *startp = i;
751: brace_level++;
752: break;
753: case '}':
754: if (in_bracket)
755: break;
756: if (*startp < 0) {
757: /* Unbalanced brace */
758: return -1;
759: }
760: if (--brace_level <= 0)
761: *endp = i;
762: break;
763: }
764: }
765: /* unbalanced brackets/braces */
766: if (*endp < 0 && (*startp >= 0 || in_bracket))
767: return -1;
768: return 0;
769: }
770:
771: /*
772: * Assembles and records a successfully-expanded pattern, returns -1 on
773: * alloc failure.
774: */
775: static int
776: emit_expansion(const char *pattern, int brace_start, int brace_end,
777: int sel_start, int sel_end, char ***patternsp, size_t *npatternsp)
778: {
779: char *cp;
1.257 djm 780: size_t pattern_len;
781: int o = 0, tail_len;
1.204 djm 782:
1.257 djm 783: if ((pattern_len = strlen(pattern)) == 0 || pattern_len >= INT_MAX)
784: return -1;
785:
786: tail_len = strlen(pattern + brace_end + 1);
1.204 djm 787: if ((cp = malloc(brace_start + (sel_end - sel_start) +
788: tail_len + 1)) == NULL)
789: return -1;
790:
791: /* Pattern before initial brace */
792: if (brace_start > 0) {
793: memcpy(cp, pattern, brace_start);
794: o = brace_start;
795: }
796: /* Current braced selection */
797: if (sel_end - sel_start > 0) {
798: memcpy(cp + o, pattern + sel_start,
799: sel_end - sel_start);
800: o += sel_end - sel_start;
801: }
802: /* Remainder of pattern after closing brace */
803: if (tail_len > 0) {
804: memcpy(cp + o, pattern + brace_end + 1, tail_len);
805: o += tail_len;
806: }
807: cp[o] = '\0';
808: if (append(cp, patternsp, npatternsp) != 0) {
809: free(cp);
810: return -1;
811: }
812: return 0;
813: }
814:
815: /*
816: * Expand the first encountered brace in pattern, appending the expanded
817: * patterns it yielded to the *patternsp array.
818: *
819: * Returns 0 on success or -1 on allocation failure.
820: *
821: * Signals whether expansion was performed via *expanded and whether
822: * pattern was invalid via *invalid.
823: */
824: static int
825: brace_expand_one(const char *pattern, char ***patternsp, size_t *npatternsp,
826: int *expanded, int *invalid)
827: {
828: int i;
829: int in_bracket, brace_start, brace_end, brace_level;
830: int sel_start, sel_end;
831:
832: *invalid = *expanded = 0;
833:
834: if (find_brace(pattern, &brace_start, &brace_end) != 0) {
835: *invalid = 1;
836: return 0;
837: } else if (brace_start == -1)
838: return 0;
839:
840: in_bracket = brace_level = 0;
841: for (i = sel_start = brace_start + 1; i < brace_end; i++) {
842: switch (pattern[i]) {
843: case '{':
844: if (in_bracket)
845: break;
846: brace_level++;
847: break;
848: case '}':
849: if (in_bracket)
850: break;
851: brace_level--;
852: break;
853: case '[':
854: in_bracket = 1;
855: break;
856: case ']':
857: in_bracket = 0;
858: break;
859: case '\\':
860: if (i < brace_end - 1)
861: i++; /* skip */
862: break;
863: }
864: if (pattern[i] == ',' || i == brace_end - 1) {
865: if (in_bracket || brace_level > 0)
866: continue;
867: /* End of a selection, emit an expanded pattern */
868:
869: /* Adjust end index for last selection */
870: sel_end = (i == brace_end - 1) ? brace_end : i;
871: if (emit_expansion(pattern, brace_start, brace_end,
872: sel_start, sel_end, patternsp, npatternsp) != 0)
873: return -1;
874: /* move on to the next selection */
875: sel_start = i + 1;
876: continue;
877: }
878: }
879: if (in_bracket || brace_level > 0) {
880: *invalid = 1;
881: return 0;
882: }
883: /* success */
884: *expanded = 1;
885: return 0;
886: }
887:
888: /* Expand braces from pattern. Returns 0 on success, -1 on failure */
889: static int
890: brace_expand(const char *pattern, char ***patternsp, size_t *npatternsp)
891: {
892: char *cp, *cp2, **active = NULL, **done = NULL;
893: size_t i, nactive = 0, ndone = 0;
894: int ret = -1, invalid = 0, expanded = 0;
895:
896: *patternsp = NULL;
897: *npatternsp = 0;
898:
899: /* Start the worklist with the original pattern */
900: if ((cp = strdup(pattern)) == NULL)
901: return -1;
902: if (append(cp, &active, &nactive) != 0) {
903: free(cp);
904: return -1;
905: }
906: while (nactive > 0) {
907: cp = active[nactive - 1];
908: nactive--;
909: if (brace_expand_one(cp, &active, &nactive,
910: &expanded, &invalid) == -1) {
911: free(cp);
912: goto fail;
913: }
914: if (invalid)
1.213 djm 915: fatal_f("invalid brace pattern \"%s\"", cp);
1.204 djm 916: if (expanded) {
917: /*
918: * Current entry expanded to new entries on the
919: * active list; discard the progenitor pattern.
920: */
921: free(cp);
922: continue;
923: }
924: /*
925: * Pattern did not expand; append the finename component to
926: * the completed list
927: */
928: if ((cp2 = strrchr(cp, '/')) != NULL)
929: *cp2++ = '\0';
930: else
931: cp2 = cp;
932: if (append(xstrdup(cp2), &done, &ndone) != 0) {
933: free(cp);
934: goto fail;
935: }
936: free(cp);
937: }
938: /* success */
939: *patternsp = done;
940: *npatternsp = ndone;
941: done = NULL;
942: ndone = 0;
943: ret = 0;
944: fail:
945: for (i = 0; i < nactive; i++)
946: free(active[i]);
947: free(active);
948: for (i = 0; i < ndone; i++)
949: free(done[i]);
950: free(done);
951: return ret;
952: }
953:
1.216 djm 954: static struct sftp_conn *
1.219 djm 955: do_sftp_connect(char *host, char *user, int port, char *sftp_direct,
956: int *reminp, int *remoutp, int *pidp)
1.216 djm 957: {
958: if (sftp_direct == NULL) {
1.231 naddy 959: if (do_cmd(ssh_program, host, user, port, 1, "sftp",
1.219 djm 960: reminp, remoutp, pidp) < 0)
1.216 djm 961: return NULL;
962:
963: } else {
1.247 djm 964: freeargs(&args);
1.216 djm 965: addargs(&args, "sftp-server");
1.231 naddy 966: if (do_cmd(sftp_direct, host, NULL, -1, 0, "sftp",
1.219 djm 967: reminp, remoutp, pidp) < 0)
1.216 djm 968: return NULL;
969: }
1.258 djm 970: return sftp_init(*reminp, *remoutp,
1.250 djm 971: sftp_copy_buflen, sftp_nrequests, limit_kbps);
1.216 djm 972: }
973:
1.1 deraadt 974: void
1.216 djm 975: toremote(int argc, char **argv, enum scp_mode_e mode, char *sftp_direct)
1.1 deraadt 976: {
1.193 millert 977: char *suser = NULL, *host = NULL, *src = NULL;
978: char *bp, *tuser, *thost, *targ;
979: int sport = -1, tport = -1;
1.219 djm 980: struct sftp_conn *conn = NULL, *conn2 = NULL;
1.129 djm 981: arglist alist;
1.219 djm 982: int i, r, status;
1.254 djm 983: struct stat sb;
1.168 djm 984: u_int j;
1.129 djm 985:
986: memset(&alist, '\0', sizeof(alist));
987: alist.list = NULL;
1.1 deraadt 988:
1.193 millert 989: /* Parse target */
1.194 millert 990: r = parse_scp_uri(argv[argc - 1], &tuser, &thost, &tport, &targ);
991: if (r == -1) {
992: fmprintf(stderr, "%s: invalid uri\n", argv[argc - 1]);
993: ++errs;
994: goto out;
995: }
1.193 millert 996: if (r != 0) {
997: if (parse_user_host_path(argv[argc - 1], &tuser, &thost,
1.194 millert 998: &targ) == -1) {
999: fmprintf(stderr, "%s: invalid target\n", argv[argc - 1]);
1000: ++errs;
1.193 millert 1001: goto out;
1.194 millert 1002: }
1.129 djm 1003: }
1004:
1.193 millert 1005: /* Parse source files */
1.1 deraadt 1006: for (i = 0; i < argc - 1; i++) {
1.193 millert 1007: free(suser);
1008: free(host);
1009: free(src);
1.194 millert 1010: r = parse_scp_uri(argv[i], &suser, &host, &sport, &src);
1011: if (r == -1) {
1012: fmprintf(stderr, "%s: invalid uri\n", argv[i]);
1013: ++errs;
1014: continue;
1015: }
1016: if (r != 0) {
1.193 millert 1017: parse_user_host_path(argv[i], &suser, &host, &src);
1.194 millert 1018: }
1.193 millert 1019: if (suser != NULL && !okname(suser)) {
1020: ++errs;
1021: continue;
1022: }
1023: if (host && throughlocal) { /* extended remote to remote */
1.219 djm 1024: if (mode == MODE_SFTP) {
1025: if (remin == -1) {
1026: /* Connect to dest now */
1027: conn = do_sftp_connect(thost, tuser,
1028: tport, sftp_direct,
1029: &remin, &remout, &do_cmd_pid);
1030: if (conn == NULL) {
1031: fatal("Unable to open "
1032: "destination connection");
1033: }
1034: debug3_f("origin in %d out %d pid %ld",
1035: remin, remout, (long)do_cmd_pid);
1036: }
1037: /*
1038: * XXX remember suser/host/sport and only
1039: * reconnect if they change between arguments.
1040: * would save reconnections for cases like
1041: * scp -3 hosta:/foo hosta:/bar hostb:
1042: */
1043: /* Connect to origin now */
1044: conn2 = do_sftp_connect(host, suser,
1045: sport, sftp_direct,
1046: &remin2, &remout2, &do_cmd_pid2);
1047: if (conn2 == NULL) {
1048: fatal("Unable to open "
1049: "source connection");
1050: }
1051: debug3_f("destination in %d out %d pid %ld",
1052: remin2, remout2, (long)do_cmd_pid2);
1.228 djm 1053: throughlocal_sftp(conn2, conn, src, targ);
1.219 djm 1054: (void) close(remin2);
1055: (void) close(remout2);
1056: remin2 = remout2 = -1;
1057: if (waitpid(do_cmd_pid2, &status, 0) == -1)
1058: ++errs;
1059: else if (!WIFEXITED(status) ||
1060: WEXITSTATUS(status) != 0)
1061: ++errs;
1062: do_cmd_pid2 = -1;
1063: continue;
1064: } else {
1065: xasprintf(&bp, "%s -f %s%s", cmd,
1066: *src == '-' ? "-- " : "", src);
1.231 naddy 1067: if (do_cmd(ssh_program, host, suser, sport, 0,
1.219 djm 1068: bp, &remin, &remout, &do_cmd_pid) < 0)
1069: exit(1);
1070: free(bp);
1071: xasprintf(&bp, "%s -t %s%s", cmd,
1072: *targ == '-' ? "-- " : "", targ);
1073: if (do_cmd2(thost, tuser, tport, bp,
1074: remin, remout) < 0)
1075: exit(1);
1076: free(bp);
1077: (void) close(remin);
1078: (void) close(remout);
1079: remin = remout = -1;
1080: }
1.193 millert 1081: } else if (host) { /* standard remote to remote */
1.215 djm 1082: /*
1083: * Second remote user is passed to first remote side
1084: * via scp command-line. Ensure it contains no obvious
1085: * shell characters.
1086: */
1087: if (tuser != NULL && !okname(tuser)) {
1088: ++errs;
1089: continue;
1090: }
1.193 millert 1091: if (tport != -1 && tport != SSH_DEFAULT_PORT) {
1092: /* This would require the remote support URIs */
1093: fatal("target port not supported with two "
1.232 naddy 1094: "remote hosts and the -R option");
1.193 millert 1095: }
1096:
1.129 djm 1097: freeargs(&alist);
1098: addargs(&alist, "%s", ssh_program);
1099: addargs(&alist, "-x");
1.168 djm 1100: addargs(&alist, "-oClearAllForwardings=yes");
1.129 djm 1101: addargs(&alist, "-n");
1.168 djm 1102: for (j = 0; j < remote_remote_args.num; j++) {
1103: addargs(&alist, "%s",
1104: remote_remote_args.list[j]);
1105: }
1.193 millert 1106:
1107: if (sport != -1) {
1108: addargs(&alist, "-p");
1109: addargs(&alist, "%d", sport);
1110: }
1111: if (suser) {
1.129 djm 1112: addargs(&alist, "-l");
1113: addargs(&alist, "%s", suser);
1.23 markus 1114: }
1.165 guenther 1115: addargs(&alist, "--");
1.129 djm 1116: addargs(&alist, "%s", host);
1117: addargs(&alist, "%s", cmd);
1118: addargs(&alist, "%s", src);
1119: addargs(&alist, "%s%s%s:%s",
1120: tuser ? tuser : "", tuser ? "@" : "",
1121: thost, targ);
1122: if (do_local_cmd(&alist) != 0)
1.109 markus 1123: errs = 1;
1.18 markus 1124: } else { /* local to remote */
1.216 djm 1125: if (mode == MODE_SFTP) {
1.254 djm 1126: /* no need to glob: already done by shell */
1127: if (stat(argv[i], &sb) != 0) {
1128: fatal("stat local \"%s\": %s", argv[i],
1129: strerror(errno));
1130: }
1.216 djm 1131: if (remin == -1) {
1132: /* Connect to remote now */
1133: conn = do_sftp_connect(thost, tuser,
1.219 djm 1134: tport, sftp_direct,
1135: &remin, &remout, &do_cmd_pid);
1.216 djm 1136: if (conn == NULL) {
1137: fatal("Unable to open sftp "
1138: "connection");
1139: }
1140: }
1141:
1142: /* The protocol */
1.228 djm 1143: source_sftp(1, argv[i], targ, conn);
1.216 djm 1144: continue;
1145: }
1146: /* SCP */
1.1 deraadt 1147: if (remin == -1) {
1.171 djm 1148: xasprintf(&bp, "%s -t %s%s", cmd,
1149: *targ == '-' ? "-- " : "", targ);
1.231 naddy 1150: if (do_cmd(ssh_program, thost, tuser, tport, 0,
1151: bp, &remin, &remout, &do_cmd_pid) < 0)
1.18 markus 1152: exit(1);
1.1 deraadt 1153: if (response() < 0)
1154: exit(1);
1.173 djm 1155: free(bp);
1.1 deraadt 1156: }
1.18 markus 1157: source(1, argv + i);
1.1 deraadt 1158: }
1159: }
1.193 millert 1160: out:
1.228 djm 1161: if (mode == MODE_SFTP)
1.216 djm 1162: free(conn);
1.193 millert 1163: free(tuser);
1164: free(thost);
1165: free(targ);
1166: free(suser);
1167: free(host);
1168: free(src);
1.1 deraadt 1169: }
1170:
1171: void
1.216 djm 1172: tolocal(int argc, char **argv, enum scp_mode_e mode, char *sftp_direct)
1.1 deraadt 1173: {
1.193 millert 1174: char *bp, *host = NULL, *src = NULL, *suser = NULL;
1.129 djm 1175: arglist alist;
1.216 djm 1176: struct sftp_conn *conn = NULL;
1.193 millert 1177: int i, r, sport = -1;
1.129 djm 1178:
1179: memset(&alist, '\0', sizeof(alist));
1180: alist.list = NULL;
1.1 deraadt 1181:
1182: for (i = 0; i < argc - 1; i++) {
1.193 millert 1183: free(suser);
1184: free(host);
1185: free(src);
1.194 millert 1186: r = parse_scp_uri(argv[i], &suser, &host, &sport, &src);
1.193 millert 1187: if (r == -1) {
1.194 millert 1188: fmprintf(stderr, "%s: invalid uri\n", argv[i]);
1.193 millert 1189: ++errs;
1190: continue;
1191: }
1192: if (r != 0)
1193: parse_user_host_path(argv[i], &suser, &host, &src);
1194: if (suser != NULL && !okname(suser)) {
1195: ++errs;
1196: continue;
1197: }
1198: if (!host) { /* Local to local. */
1.129 djm 1199: freeargs(&alist);
1200: addargs(&alist, "%s", _PATH_CP);
1201: if (iamrecursive)
1202: addargs(&alist, "-r");
1203: if (pflag)
1204: addargs(&alist, "-p");
1.165 guenther 1205: addargs(&alist, "--");
1.129 djm 1206: addargs(&alist, "%s", argv[i]);
1207: addargs(&alist, "%s", argv[argc-1]);
1208: if (do_local_cmd(&alist))
1.1 deraadt 1209: ++errs;
1210: continue;
1211: }
1.193 millert 1212: /* Remote to local. */
1.216 djm 1213: if (mode == MODE_SFTP) {
1.219 djm 1214: conn = do_sftp_connect(host, suser, sport,
1215: sftp_direct, &remin, &remout, &do_cmd_pid);
1.216 djm 1216: if (conn == NULL) {
1.236 djm 1217: error("sftp connection failed");
1.216 djm 1218: ++errs;
1219: continue;
1220: }
1221:
1222: /* The protocol */
1223: sink_sftp(1, argv[argc - 1], src, conn);
1224:
1225: free(conn);
1226: (void) close(remin);
1227: (void) close(remout);
1228: remin = remout = -1;
1229: continue;
1230: }
1231: /* SCP */
1.171 djm 1232: xasprintf(&bp, "%s -f %s%s",
1233: cmd, *src == '-' ? "-- " : "", src);
1.231 naddy 1234: if (do_cmd(ssh_program, host, suser, sport, 0, bp,
1.219 djm 1235: &remin, &remout, &do_cmd_pid) < 0) {
1.173 djm 1236: free(bp);
1.18 markus 1237: ++errs;
1238: continue;
1.1 deraadt 1239: }
1.173 djm 1240: free(bp);
1.202 djm 1241: sink(1, argv + argc - 1, src);
1.18 markus 1242: (void) close(remin);
1.1 deraadt 1243: remin = remout = -1;
1244: }
1.193 millert 1245: free(suser);
1246: free(host);
1247: free(src);
1.1 deraadt 1248: }
1249:
1.228 djm 1250: /* Prepare remote path, handling ~ by assuming cwd is the homedir */
1.226 djm 1251: static char *
1.228 djm 1252: prepare_remote_path(struct sftp_conn *conn, const char *path)
1.226 djm 1253: {
1.242 djm 1254: size_t nslash;
1255:
1.228 djm 1256: /* Handle ~ prefixed paths */
1.242 djm 1257: if (*path == '\0' || strcmp(path, "~") == 0)
1258: return xstrdup(".");
1.228 djm 1259: if (*path != '~')
1260: return xstrdup(path);
1.242 djm 1261: if (strncmp(path, "~/", 2) == 0) {
1262: if ((nslash = strspn(path + 2, "/")) == strlen(path + 2))
1263: return xstrdup(".");
1264: return xstrdup(path + 2 + nslash);
1265: }
1.258 djm 1266: if (sftp_can_expand_path(conn))
1267: return sftp_expand_path(conn, path);
1.228 djm 1268: /* No protocol extension */
1.237 djm 1269: error("server expand-path extension is required "
1270: "for ~user paths in SFTP mode");
1.228 djm 1271: return NULL;
1.226 djm 1272: }
1273:
1.1 deraadt 1274: void
1.228 djm 1275: source_sftp(int argc, char *src, char *targ, struct sftp_conn *conn)
1.216 djm 1276: {
1277: char *target = NULL, *filename = NULL, *abs_dst = NULL;
1.243 djm 1278: int src_is_dir, target_is_dir;
1279: Attrib a;
1280: struct stat st;
1281:
1282: memset(&a, '\0', sizeof(a));
1283: if (stat(src, &st) != 0)
1284: fatal("stat local \"%s\": %s", src, strerror(errno));
1285: src_is_dir = S_ISDIR(st.st_mode);
1.216 djm 1286: if ((filename = basename(src)) == NULL)
1.243 djm 1287: fatal("basename \"%s\": %s", src, strerror(errno));
1.216 djm 1288:
1289: /*
1290: * No need to glob here - the local shell already took care of
1291: * the expansions
1292: */
1.228 djm 1293: if ((target = prepare_remote_path(conn, targ)) == NULL)
1.226 djm 1294: cleanup_exit(255);
1.258 djm 1295: target_is_dir = sftp_remote_is_dir(conn, target);
1.216 djm 1296: if (targetshouldbedirectory && !target_is_dir) {
1.243 djm 1297: debug("target directory \"%s\" does not exist", target);
1298: a.flags = SSH2_FILEXFER_ATTR_PERMISSIONS;
1299: a.perm = st.st_mode | 0700; /* ensure writable */
1.258 djm 1300: if (sftp_mkdir(conn, target, &a, 1) != 0)
1.243 djm 1301: cleanup_exit(255); /* error already logged */
1302: target_is_dir = 1;
1.216 djm 1303: }
1304: if (target_is_dir)
1.258 djm 1305: abs_dst = sftp_path_append(target, filename);
1.216 djm 1306: else {
1307: abs_dst = target;
1308: target = NULL;
1309: }
1310: debug3_f("copying local %s to remote %s", src, abs_dst);
1311:
1.243 djm 1312: if (src_is_dir && iamrecursive) {
1.258 djm 1313: if (sftp_upload_dir(conn, src, abs_dst, pflag,
1.248 djm 1314: SFTP_PROGRESS_ONLY, 0, 0, 1, 1) != 0) {
1.244 djm 1315: error("failed to upload directory %s to %s", src, targ);
1.234 djm 1316: errs = 1;
1.216 djm 1317: }
1.258 djm 1318: } else if (sftp_upload(conn, src, abs_dst, pflag, 0, 0, 1) != 0) {
1.244 djm 1319: error("failed to upload file %s to %s", src, targ);
1.234 djm 1320: errs = 1;
1321: }
1.216 djm 1322:
1323: free(abs_dst);
1324: free(target);
1325: }
1326:
1327: void
1.104 djm 1328: source(int argc, char **argv)
1.1 deraadt 1329: {
1330: struct stat stb;
1331: static BUF buffer;
1332: BUF *bp;
1.163 dtucker 1333: off_t i, statbytes;
1.180 djm 1334: size_t amt, nr;
1.125 dtucker 1335: int fd = -1, haderr, indx;
1.206 dtucker 1336: char *last, *name, buf[PATH_MAX + 128], encname[PATH_MAX];
1.65 deraadt 1337: int len;
1.1 deraadt 1338:
1339: for (indx = 0; indx < argc; ++indx) {
1.18 markus 1340: name = argv[indx];
1.11 aaron 1341: statbytes = 0;
1.65 deraadt 1342: len = strlen(name);
1343: while (len > 1 && name[len-1] == '/')
1344: name[--len] = '\0';
1.241 deraadt 1345: if ((fd = open(name, O_RDONLY|O_NONBLOCK)) == -1)
1.158 dtucker 1346: goto syserr;
1.85 markus 1347: if (strchr(name, '\n') != NULL) {
1.158 dtucker 1348: strnvis(encname, name, sizeof(encname), VIS_NL);
1349: name = encname;
1.85 markus 1350: }
1.205 deraadt 1351: if (fstat(fd, &stb) == -1) {
1.1 deraadt 1352: syserr: run_err("%s: %s", name, strerror(errno));
1353: goto next;
1354: }
1.163 dtucker 1355: if (stb.st_size < 0) {
1356: run_err("%s: %s", name, "Negative file size");
1357: goto next;
1358: }
1.157 djm 1359: unset_nonblock(fd);
1.1 deraadt 1360: switch (stb.st_mode & S_IFMT) {
1361: case S_IFREG:
1362: break;
1363: case S_IFDIR:
1364: if (iamrecursive) {
1365: rsource(name, &stb);
1366: goto next;
1367: }
1368: /* FALLTHROUGH */
1369: default:
1370: run_err("%s: not a regular file", name);
1371: goto next;
1372: }
1373: if ((last = strrchr(name, '/')) == NULL)
1374: last = name;
1375: else
1376: ++last;
1.11 aaron 1377: curfile = last;
1.1 deraadt 1378: if (pflag) {
1.176 guenther 1379: if (do_times(remout, verbose_mode, &stb) < 0)
1.1 deraadt 1380: goto next;
1381: }
1382: #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
1.61 markus 1383: snprintf(buf, sizeof buf, "C%04o %lld %s\n",
1.47 markus 1384: (u_int) (stb.st_mode & FILEMODEMASK),
1.62 markus 1385: (long long)stb.st_size, last);
1.186 schwarze 1386: if (verbose_mode)
1387: fmprintf(stderr, "Sending file modes: %s", buf);
1.107 deraadt 1388: (void) atomicio(vwrite, remout, buf, strlen(buf));
1.1 deraadt 1389: if (response() < 0)
1390: goto next;
1.161 djm 1391: if ((bp = allocbuf(&buffer, fd, COPY_BUFLEN)) == NULL) {
1.127 deraadt 1392: next: if (fd != -1) {
1393: (void) close(fd);
1394: fd = -1;
1395: }
1.1 deraadt 1396: continue;
1397: }
1.97 fgsch 1398: if (showprogress)
1399: start_progress_meter(curfile, stb.st_size, &statbytes);
1.161 djm 1400: set_nonblock(remout);
1.1 deraadt 1401: for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
1402: amt = bp->cnt;
1.163 dtucker 1403: if (i + (off_t)amt > stb.st_size)
1.1 deraadt 1404: amt = stb.st_size - i;
1405: if (!haderr) {
1.180 djm 1406: if ((nr = atomicio(read, fd,
1407: bp->buf, amt)) != amt) {
1.122 avsm 1408: haderr = errno;
1.180 djm 1409: memset(bp->buf + nr, 0, amt - nr);
1410: }
1.1 deraadt 1411: }
1.161 djm 1412: /* Keep writing after error to retain sync */
1413: if (haderr) {
1414: (void)atomicio(vwrite, remout, bp->buf, amt);
1.180 djm 1415: memset(bp->buf, 0, amt);
1.161 djm 1416: continue;
1.1 deraadt 1417: }
1.167 djm 1418: if (atomicio6(vwrite, remout, bp->buf, amt, scpio,
1.161 djm 1419: &statbytes) != amt)
1420: haderr = errno;
1.1 deraadt 1421: }
1.161 djm 1422: unset_nonblock(remout);
1.4 aaron 1423:
1.127 deraadt 1424: if (fd != -1) {
1.205 deraadt 1425: if (close(fd) == -1 && !haderr)
1.127 deraadt 1426: haderr = errno;
1427: fd = -1;
1428: }
1.1 deraadt 1429: if (!haderr)
1.107 deraadt 1430: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 1431: else
1432: run_err("%s: %s", name, strerror(haderr));
1.18 markus 1433: (void) response();
1.185 dtucker 1434: if (showprogress)
1435: stop_progress_meter();
1.1 deraadt 1436: }
1437: }
1438:
1439: void
1.104 djm 1440: rsource(char *name, struct stat *statp)
1.1 deraadt 1441: {
1442: DIR *dirp;
1443: struct dirent *dp;
1.181 deraadt 1444: char *last, *vect[1], path[PATH_MAX];
1.1 deraadt 1445:
1446: if (!(dirp = opendir(name))) {
1447: run_err("%s: %s", name, strerror(errno));
1448: return;
1449: }
1450: last = strrchr(name, '/');
1.183 mmcc 1451: if (last == NULL)
1.1 deraadt 1452: last = name;
1453: else
1454: last++;
1455: if (pflag) {
1.176 guenther 1456: if (do_times(remout, verbose_mode, statp) < 0) {
1.1 deraadt 1457: closedir(dirp);
1458: return;
1459: }
1460: }
1.55 deraadt 1461: (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n",
1.47 markus 1462: (u_int) (statp->st_mode & FILEMODEMASK), 0, last);
1.18 markus 1463: if (verbose_mode)
1.186 schwarze 1464: fmprintf(stderr, "Entering directory: %s", path);
1.107 deraadt 1465: (void) atomicio(vwrite, remout, path, strlen(path));
1.1 deraadt 1466: if (response() < 0) {
1467: closedir(dirp);
1468: return;
1469: }
1.63 stevesk 1470: while ((dp = readdir(dirp)) != NULL) {
1.1 deraadt 1471: if (dp->d_ino == 0)
1472: continue;
1473: if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
1474: continue;
1475: if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) {
1476: run_err("%s/%s: name too long", name, dp->d_name);
1477: continue;
1478: }
1.55 deraadt 1479: (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name);
1.1 deraadt 1480: vect[0] = path;
1481: source(1, vect);
1482: }
1.18 markus 1483: (void) closedir(dirp);
1.107 deraadt 1484: (void) atomicio(vwrite, remout, "E\n", 2);
1.18 markus 1485: (void) response();
1.1 deraadt 1486: }
1487:
1.216 djm 1488: void
1489: sink_sftp(int argc, char *dst, const char *src, struct sftp_conn *conn)
1490: {
1491: char *abs_src = NULL;
1492: char *abs_dst = NULL;
1493: glob_t g;
1.228 djm 1494: char *filename, *tmp = NULL;
1.243 djm 1495: int i, r, err = 0, dst_is_dir;
1496: struct stat st;
1.216 djm 1497:
1.226 djm 1498: memset(&g, 0, sizeof(g));
1.243 djm 1499:
1.216 djm 1500: /*
1501: * Here, we need remote glob as SFTP can not depend on remote shell
1502: * expansions
1503: */
1.228 djm 1504: if ((abs_src = prepare_remote_path(conn, src)) == NULL) {
1.226 djm 1505: err = -1;
1506: goto out;
1507: }
1.216 djm 1508:
1509: debug3_f("copying remote %s to local %s", abs_src, dst);
1.259 ! djm 1510: if ((r = sftp_glob(conn, abs_src, GLOB_NOCHECK|GLOB_MARK,
1.249 djm 1511: NULL, &g)) != 0) {
1.216 djm 1512: if (r == GLOB_NOSPACE)
1.244 djm 1513: error("%s: too many glob matches", src);
1.216 djm 1514: else
1.244 djm 1515: error("%s: %s", src, strerror(ENOENT));
1.216 djm 1516: err = -1;
1517: goto out;
1518: }
1519:
1.249 djm 1520: /* Did we actually get any matches back from the glob? */
1521: if (g.gl_matchc == 0 && g.gl_pathc == 1 && g.gl_pathv[0] != 0) {
1522: /*
1523: * If nothing matched but a path returned, then it's probably
1524: * a GLOB_NOCHECK result. Check whether the unglobbed path
1525: * exists so we can give a nice error message early.
1526: */
1.258 djm 1527: if (sftp_stat(conn, g.gl_pathv[0], 1, NULL) != 0) {
1.249 djm 1528: error("%s: %s", src, strerror(ENOENT));
1529: err = -1;
1530: goto out;
1531: }
1532: }
1533:
1.243 djm 1534: if ((r = stat(dst, &st)) != 0)
1535: debug2_f("stat local \"%s\": %s", dst, strerror(errno));
1536: dst_is_dir = r == 0 && S_ISDIR(st.st_mode);
1537:
1538: if (g.gl_matchc > 1 && !dst_is_dir) {
1539: if (r == 0) {
1540: error("Multiple files match pattern, but destination "
1541: "\"%s\" is not a directory", dst);
1542: err = -1;
1543: goto out;
1544: }
1545: debug2_f("creating destination \"%s\"", dst);
1546: if (mkdir(dst, 0777) != 0) {
1547: error("local mkdir \"%s\": %s", dst, strerror(errno));
1548: err = -1;
1549: goto out;
1550: }
1551: dst_is_dir = 1;
1.216 djm 1552: }
1553:
1554: for (i = 0; g.gl_pathv[i] && !interrupted; i++) {
1555: tmp = xstrdup(g.gl_pathv[i]);
1556: if ((filename = basename(tmp)) == NULL) {
1557: error("basename %s: %s", tmp, strerror(errno));
1558: err = -1;
1559: goto out;
1560: }
1561:
1.243 djm 1562: if (dst_is_dir)
1.258 djm 1563: abs_dst = sftp_path_append(dst, filename);
1.216 djm 1564: else
1565: abs_dst = xstrdup(dst);
1566:
1567: debug("Fetching %s to %s\n", g.gl_pathv[i], abs_dst);
1.258 djm 1568: if (sftp_globpath_is_dir(g.gl_pathv[i]) && iamrecursive) {
1569: if (sftp_download_dir(conn, g.gl_pathv[i], abs_dst,
1570: NULL, pflag, SFTP_PROGRESS_ONLY, 0, 0, 1, 1) == -1)
1.216 djm 1571: err = -1;
1572: } else {
1.258 djm 1573: if (sftp_download(conn, g.gl_pathv[i], abs_dst, NULL,
1.248 djm 1574: pflag, 0, 0, 1) == -1)
1.216 djm 1575: err = -1;
1576: }
1577: free(abs_dst);
1578: abs_dst = NULL;
1.217 dtucker 1579: free(tmp);
1580: tmp = NULL;
1.216 djm 1581: }
1582:
1583: out:
1584: free(abs_src);
1.217 dtucker 1585: free(tmp);
1.216 djm 1586: globfree(&g);
1.235 djm 1587: if (err == -1)
1.234 djm 1588: errs = 1;
1.216 djm 1589: }
1590:
1591:
1.189 millert 1592: #define TYPE_OVERFLOW(type, val) \
1593: ((sizeof(type) == 4 && (val) > INT32_MAX) || \
1594: (sizeof(type) == 8 && (val) > INT64_MAX) || \
1595: (sizeof(type) != 4 && sizeof(type) != 8))
1596:
1.1 deraadt 1597: void
1.202 djm 1598: sink(int argc, char **argv, const char *src)
1.1 deraadt 1599: {
1600: static BUF buffer;
1601: struct stat stb;
1602: BUF *bp;
1.122 avsm 1603: off_t i;
1.124 djm 1604: size_t j, count;
1.140 deraadt 1605: int amt, exists, first, ofd;
1606: mode_t mode, omode, mask;
1.97 fgsch 1607: off_t size, statbytes;
1.176 guenther 1608: unsigned long long ull;
1.209 djm 1609: int setimes, targisdir, wrerr;
1.186 schwarze 1610: char ch, *cp, *np, *targ, *why, *vect[1], buf[2048], visbuf[2048];
1.204 djm 1611: char **patterns = NULL;
1612: size_t n, npatterns = 0;
1.40 markus 1613: struct timeval tv[2];
1.1 deraadt 1614:
1.66 stevesk 1615: #define atime tv[0]
1616: #define mtime tv[1]
1.118 deraadt 1617: #define SCREWUP(str) { why = str; goto screwup; }
1.1 deraadt 1618:
1.189 millert 1619: if (TYPE_OVERFLOW(time_t, 0) || TYPE_OVERFLOW(off_t, 0))
1620: SCREWUP("Unexpected off_t/time_t size");
1621:
1.1 deraadt 1622: setimes = targisdir = 0;
1623: mask = umask(0);
1624: if (!pflag)
1.18 markus 1625: (void) umask(mask);
1.1 deraadt 1626: if (argc != 1) {
1627: run_err("ambiguous target");
1628: exit(1);
1629: }
1630: targ = *argv;
1631: if (targetshouldbedirectory)
1632: verifydir(targ);
1.18 markus 1633:
1.107 deraadt 1634: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 1635: if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
1636: targisdir = 1;
1.202 djm 1637: if (src != NULL && !iamrecursive && !Tflag) {
1638: /*
1639: * Prepare to try to restrict incoming filenames to match
1640: * the requested destination file glob.
1641: */
1.204 djm 1642: if (brace_expand(src, &patterns, &npatterns) != 0)
1.213 djm 1643: fatal_f("could not expand pattern");
1.202 djm 1644: }
1.1 deraadt 1645: for (first = 1;; first = 0) {
1646: cp = buf;
1.122 avsm 1647: if (atomicio(read, remin, cp, 1) != 1)
1.204 djm 1648: goto done;
1.1 deraadt 1649: if (*cp++ == '\n')
1650: SCREWUP("unexpected <newline>");
1651: do {
1.30 deraadt 1652: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 1653: SCREWUP("lost connection");
1654: *cp++ = ch;
1655: } while (cp < &buf[sizeof(buf) - 1] && ch != '\n');
1656: *cp = 0;
1.114 markus 1657: if (verbose_mode)
1.186 schwarze 1658: fmprintf(stderr, "Sink: %s", buf);
1.1 deraadt 1659:
1660: if (buf[0] == '\01' || buf[0] == '\02') {
1.186 schwarze 1661: if (iamremote == 0) {
1662: (void) snmprintf(visbuf, sizeof(visbuf),
1663: NULL, "%s", buf + 1);
1.107 deraadt 1664: (void) atomicio(vwrite, STDERR_FILENO,
1.186 schwarze 1665: visbuf, strlen(visbuf));
1666: }
1.1 deraadt 1667: if (buf[0] == '\02')
1668: exit(1);
1669: ++errs;
1670: continue;
1671: }
1672: if (buf[0] == 'E') {
1.107 deraadt 1673: (void) atomicio(vwrite, remout, "", 1);
1.204 djm 1674: goto done;
1.1 deraadt 1675: }
1676: if (ch == '\n')
1677: *--cp = 0;
1678:
1679: cp = buf;
1680: if (*cp == 'T') {
1681: setimes++;
1682: cp++;
1.176 guenther 1683: if (!isdigit((unsigned char)*cp))
1684: SCREWUP("mtime.sec not present");
1685: ull = strtoull(cp, &cp, 10);
1.66 stevesk 1686: if (!cp || *cp++ != ' ')
1.1 deraadt 1687: SCREWUP("mtime.sec not delimited");
1.189 millert 1688: if (TYPE_OVERFLOW(time_t, ull))
1.176 guenther 1689: setimes = 0; /* out of range */
1690: mtime.tv_sec = ull;
1.66 stevesk 1691: mtime.tv_usec = strtol(cp, &cp, 10);
1.176 guenther 1692: if (!cp || *cp++ != ' ' || mtime.tv_usec < 0 ||
1693: mtime.tv_usec > 999999)
1.1 deraadt 1694: SCREWUP("mtime.usec not delimited");
1.176 guenther 1695: if (!isdigit((unsigned char)*cp))
1696: SCREWUP("atime.sec not present");
1697: ull = strtoull(cp, &cp, 10);
1.66 stevesk 1698: if (!cp || *cp++ != ' ')
1.1 deraadt 1699: SCREWUP("atime.sec not delimited");
1.189 millert 1700: if (TYPE_OVERFLOW(time_t, ull))
1.176 guenther 1701: setimes = 0; /* out of range */
1702: atime.tv_sec = ull;
1.66 stevesk 1703: atime.tv_usec = strtol(cp, &cp, 10);
1.176 guenther 1704: if (!cp || *cp++ != '\0' || atime.tv_usec < 0 ||
1705: atime.tv_usec > 999999)
1.1 deraadt 1706: SCREWUP("atime.usec not delimited");
1.107 deraadt 1707: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 1708: continue;
1709: }
1710: if (*cp != 'C' && *cp != 'D') {
1711: /*
1712: * Check for the case "rcp remote:foo\* local:bar".
1713: * In this case, the line "No match." can be returned
1714: * by the shell before the rcp command on the remote is
1715: * executed so the ^Aerror_message convention isn't
1716: * followed.
1717: */
1718: if (first) {
1719: run_err("%s", cp);
1720: exit(1);
1721: }
1722: SCREWUP("expected control record");
1723: }
1724: mode = 0;
1725: for (++cp; cp < buf + 5; cp++) {
1726: if (*cp < '0' || *cp > '7')
1727: SCREWUP("bad mode");
1728: mode = (mode << 3) | (*cp - '0');
1729: }
1.197 dtucker 1730: if (!pflag)
1731: mode &= ~mask;
1.1 deraadt 1732: if (*cp++ != ' ')
1733: SCREWUP("mode not delimited");
1734:
1.188 millert 1735: if (!isdigit((unsigned char)*cp))
1736: SCREWUP("size not present");
1737: ull = strtoull(cp, &cp, 10);
1738: if (!cp || *cp++ != ' ')
1.1 deraadt 1739: SCREWUP("size not delimited");
1.189 millert 1740: if (TYPE_OVERFLOW(off_t, ull))
1.188 millert 1741: SCREWUP("size out of range");
1742: size = (off_t)ull;
1743:
1.198 djm 1744: if (*cp == '\0' || strchr(cp, '/') != NULL ||
1745: strcmp(cp, ".") == 0 || strcmp(cp, "..") == 0) {
1.114 markus 1746: run_err("error: unexpected filename: %s", cp);
1747: exit(1);
1748: }
1.204 djm 1749: if (npatterns > 0) {
1750: for (n = 0; n < npatterns; n++) {
1.249 djm 1751: if (strcmp(patterns[n], cp) == 0 ||
1752: fnmatch(patterns[n], cp, 0) == 0)
1.204 djm 1753: break;
1754: }
1755: if (n >= npatterns)
1756: SCREWUP("filename does not match request");
1757: }
1.1 deraadt 1758: if (targisdir) {
1759: static char *namebuf;
1.124 djm 1760: static size_t cursize;
1.1 deraadt 1761: size_t need;
1762:
1763: need = strlen(targ) + strlen(cp) + 250;
1.55 deraadt 1764: if (need > cursize) {
1.173 djm 1765: free(namebuf);
1.18 markus 1766: namebuf = xmalloc(need);
1.55 deraadt 1767: cursize = need;
1768: }
1769: (void) snprintf(namebuf, need, "%s%s%s", targ,
1.88 mouring 1770: strcmp(targ, "/") ? "/" : "", cp);
1.1 deraadt 1771: np = namebuf;
1772: } else
1773: np = targ;
1.12 aaron 1774: curfile = cp;
1.1 deraadt 1775: exists = stat(np, &stb) == 0;
1776: if (buf[0] == 'D') {
1777: int mod_flag = pflag;
1.114 markus 1778: if (!iamrecursive)
1779: SCREWUP("received directory without -r");
1.1 deraadt 1780: if (exists) {
1781: if (!S_ISDIR(stb.st_mode)) {
1782: errno = ENOTDIR;
1783: goto bad;
1784: }
1785: if (pflag)
1.18 markus 1786: (void) chmod(np, mode);
1.1 deraadt 1787: } else {
1.214 djm 1788: /* Handle copying from a read-only directory */
1.1 deraadt 1789: mod_flag = 1;
1.205 deraadt 1790: if (mkdir(np, mode | S_IRWXU) == -1)
1.1 deraadt 1791: goto bad;
1792: }
1.58 danh 1793: vect[0] = xstrdup(np);
1.202 djm 1794: sink(1, vect, src);
1.1 deraadt 1795: if (setimes) {
1796: setimes = 0;
1.210 djm 1797: (void) utimes(vect[0], tv);
1.1 deraadt 1798: }
1799: if (mod_flag)
1.59 deraadt 1800: (void) chmod(vect[0], mode);
1.173 djm 1801: free(vect[0]);
1.1 deraadt 1802: continue;
1803: }
1804: omode = mode;
1.174 dtucker 1805: mode |= S_IWUSR;
1.205 deraadt 1806: if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) == -1) {
1.1 deraadt 1807: bad: run_err("%s: %s", np, strerror(errno));
1808: continue;
1809: }
1.107 deraadt 1810: (void) atomicio(vwrite, remout, "", 1);
1.161 djm 1811: if ((bp = allocbuf(&buffer, ofd, COPY_BUFLEN)) == NULL) {
1.18 markus 1812: (void) close(ofd);
1.1 deraadt 1813: continue;
1814: }
1815: cp = bp->buf;
1.209 djm 1816: wrerr = 0;
1.7 deraadt 1817:
1.209 djm 1818: /*
1819: * NB. do not use run_err() unless immediately followed by
1820: * exit() below as it may send a spurious reply that might
1821: * desyncronise us from the peer. Use note_err() instead.
1822: */
1.12 aaron 1823: statbytes = 0;
1.97 fgsch 1824: if (showprogress)
1825: start_progress_meter(curfile, size, &statbytes);
1.161 djm 1826: set_nonblock(remin);
1827: for (count = i = 0; i < size; i += bp->cnt) {
1828: amt = bp->cnt;
1.1 deraadt 1829: if (i + amt > size)
1830: amt = size - i;
1831: count += amt;
1832: do {
1.167 djm 1833: j = atomicio6(read, remin, cp, amt,
1834: scpio, &statbytes);
1.122 avsm 1835: if (j == 0) {
1.161 djm 1836: run_err("%s", j != EPIPE ?
1837: strerror(errno) :
1.63 stevesk 1838: "dropped connection");
1.1 deraadt 1839: exit(1);
1840: }
1841: amt -= j;
1842: cp += j;
1843: } while (amt > 0);
1.112 djm 1844:
1.1 deraadt 1845: if (count == bp->cnt) {
1846: /* Keep reading so we stay sync'd up. */
1.209 djm 1847: if (!wrerr) {
1.122 avsm 1848: if (atomicio(vwrite, ofd, bp->buf,
1849: count) != count) {
1.209 djm 1850: note_err("%s: %s", np,
1851: strerror(errno));
1852: wrerr = 1;
1.1 deraadt 1853: }
1854: }
1855: count = 0;
1856: cp = bp->buf;
1857: }
1858: }
1.161 djm 1859: unset_nonblock(remin);
1.209 djm 1860: if (count != 0 && !wrerr &&
1.122 avsm 1861: atomicio(vwrite, ofd, bp->buf, count) != count) {
1.209 djm 1862: note_err("%s: %s", np, strerror(errno));
1863: wrerr = 1;
1.1 deraadt 1864: }
1.209 djm 1865: if (!wrerr && (!exists || S_ISREG(stb.st_mode)) &&
1866: ftruncate(ofd, size) != 0)
1867: note_err("%s: truncate: %s", np, strerror(errno));
1.1 deraadt 1868: if (pflag) {
1869: if (exists || omode != mode)
1.116 dtucker 1870: if (fchmod(ofd, omode)) {
1.209 djm 1871: note_err("%s: set mode: %s",
1.63 stevesk 1872: np, strerror(errno));
1.116 dtucker 1873: }
1.1 deraadt 1874: } else {
1875: if (!exists && omode != mode)
1.116 dtucker 1876: if (fchmod(ofd, omode & ~mask)) {
1.209 djm 1877: note_err("%s: set mode: %s",
1.63 stevesk 1878: np, strerror(errno));
1.116 dtucker 1879: }
1.1 deraadt 1880: }
1.209 djm 1881: if (close(ofd) == -1)
1.211 millert 1882: note_err("%s: close: %s", np, strerror(errno));
1.18 markus 1883: (void) response();
1.185 dtucker 1884: if (showprogress)
1885: stop_progress_meter();
1.209 djm 1886: if (setimes && !wrerr) {
1.1 deraadt 1887: setimes = 0;
1.205 deraadt 1888: if (utimes(np, tv) == -1) {
1.209 djm 1889: note_err("%s: set times: %s",
1.63 stevesk 1890: np, strerror(errno));
1.1 deraadt 1891: }
1892: }
1.209 djm 1893: /* If no error was noted then signal success for this file */
1894: if (note_err(NULL) == 0)
1.107 deraadt 1895: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 1896: }
1.204 djm 1897: done:
1898: for (n = 0; n < npatterns; n++)
1899: free(patterns[n]);
1900: free(patterns);
1901: return;
1.1 deraadt 1902: screwup:
1.204 djm 1903: for (n = 0; n < npatterns; n++)
1904: free(patterns[n]);
1905: free(patterns);
1.1 deraadt 1906: run_err("protocol error: %s", why);
1907: exit(1);
1.219 djm 1908: }
1909:
1910: void
1911: throughlocal_sftp(struct sftp_conn *from, struct sftp_conn *to,
1.228 djm 1912: char *src, char *targ)
1.219 djm 1913: {
1914: char *target = NULL, *filename = NULL, *abs_dst = NULL;
1.228 djm 1915: char *abs_src = NULL, *tmp = NULL;
1.219 djm 1916: glob_t g;
1917: int i, r, targetisdir, err = 0;
1918:
1919: if ((filename = basename(src)) == NULL)
1920: fatal("basename %s: %s", src, strerror(errno));
1921:
1.228 djm 1922: if ((abs_src = prepare_remote_path(from, src)) == NULL ||
1923: (target = prepare_remote_path(to, targ)) == NULL)
1.226 djm 1924: cleanup_exit(255);
1.219 djm 1925: memset(&g, 0, sizeof(g));
1926:
1.258 djm 1927: targetisdir = sftp_remote_is_dir(to, target);
1.219 djm 1928: if (!targetisdir && targetshouldbedirectory) {
1.244 djm 1929: error("%s: destination is not a directory", targ);
1.219 djm 1930: err = -1;
1931: goto out;
1932: }
1933:
1934: debug3_f("copying remote %s to remote %s", abs_src, target);
1.259 ! djm 1935: if ((r = sftp_glob(from, abs_src, GLOB_NOCHECK|GLOB_MARK,
1.249 djm 1936: NULL, &g)) != 0) {
1.219 djm 1937: if (r == GLOB_NOSPACE)
1.244 djm 1938: error("%s: too many glob matches", src);
1.219 djm 1939: else
1.244 djm 1940: error("%s: %s", src, strerror(ENOENT));
1.219 djm 1941: err = -1;
1942: goto out;
1.249 djm 1943: }
1944:
1945: /* Did we actually get any matches back from the glob? */
1946: if (g.gl_matchc == 0 && g.gl_pathc == 1 && g.gl_pathv[0] != 0) {
1947: /*
1948: * If nothing matched but a path returned, then it's probably
1949: * a GLOB_NOCHECK result. Check whether the unglobbed path
1950: * exists so we can give a nice error message early.
1951: */
1.258 djm 1952: if (sftp_stat(from, g.gl_pathv[0], 1, NULL) != 0) {
1.249 djm 1953: error("%s: %s", src, strerror(ENOENT));
1954: err = -1;
1955: goto out;
1956: }
1.219 djm 1957: }
1958:
1959: for (i = 0; g.gl_pathv[i] && !interrupted; i++) {
1960: tmp = xstrdup(g.gl_pathv[i]);
1961: if ((filename = basename(tmp)) == NULL) {
1962: error("basename %s: %s", tmp, strerror(errno));
1963: err = -1;
1964: goto out;
1965: }
1966:
1967: if (targetisdir)
1.258 djm 1968: abs_dst = sftp_path_append(target, filename);
1.219 djm 1969: else
1970: abs_dst = xstrdup(target);
1971:
1972: debug("Fetching %s to %s\n", g.gl_pathv[i], abs_dst);
1.258 djm 1973: if (sftp_globpath_is_dir(g.gl_pathv[i]) && iamrecursive) {
1974: if (sftp_crossload_dir(from, to, g.gl_pathv[i], abs_dst,
1.221 djm 1975: NULL, pflag, SFTP_PROGRESS_ONLY, 1) == -1)
1.219 djm 1976: err = -1;
1977: } else {
1.258 djm 1978: if (sftp_crossload(from, to, g.gl_pathv[i], abs_dst,
1979: NULL, pflag) == -1)
1.219 djm 1980: err = -1;
1981: }
1982: free(abs_dst);
1983: abs_dst = NULL;
1984: free(tmp);
1985: tmp = NULL;
1986: }
1987:
1988: out:
1989: free(abs_src);
1990: free(abs_dst);
1991: free(target);
1992: free(tmp);
1993: globfree(&g);
1994: if (err == -1)
1.235 djm 1995: errs = 1;
1.1 deraadt 1996: }
1997:
1998: int
1.86 itojun 1999: response(void)
1.1 deraadt 2000: {
1.186 schwarze 2001: char ch, *cp, resp, rbuf[2048], visbuf[2048];
1.1 deraadt 2002:
1.30 deraadt 2003: if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp))
1.1 deraadt 2004: lostconn(0);
2005:
2006: cp = rbuf;
1.18 markus 2007: switch (resp) {
2008: case 0: /* ok */
1.1 deraadt 2009: return (0);
2010: default:
2011: *cp++ = resp;
2012: /* FALLTHROUGH */
1.18 markus 2013: case 1: /* error, followed by error msg */
2014: case 2: /* fatal error, "" */
1.1 deraadt 2015: do {
1.30 deraadt 2016: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 2017: lostconn(0);
2018: *cp++ = ch;
2019: } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n');
2020:
1.186 schwarze 2021: if (!iamremote) {
2022: cp[-1] = '\0';
2023: (void) snmprintf(visbuf, sizeof(visbuf),
2024: NULL, "%s\n", rbuf);
2025: (void) atomicio(vwrite, STDERR_FILENO,
2026: visbuf, strlen(visbuf));
2027: }
1.1 deraadt 2028: ++errs;
2029: if (resp == 1)
2030: return (-1);
2031: exit(1);
2032: }
2033: /* NOTREACHED */
2034: }
2035:
2036: void
1.86 itojun 2037: usage(void)
1.1 deraadt 2038: {
1.83 stevesk 2039: (void) fprintf(stderr,
1.239 djm 2040: "usage: scp [-346ABCOpqRrsTv] [-c cipher] [-D sftp_server_path] [-F ssh_config]\n"
1.251 jmc 2041: " [-i identity_file] [-J destination] [-l limit] [-o ssh_option]\n"
2042: " [-P port] [-S program] [-X sftp_option] source ... target\n");
1.1 deraadt 2043: exit(1);
2044: }
2045:
2046: void
1.18 markus 2047: run_err(const char *fmt,...)
1.1 deraadt 2048: {
2049: static FILE *fp;
2050: va_list ap;
2051:
2052: ++errs;
1.136 biorn 2053: if (fp != NULL || (remout != -1 && (fp = fdopen(remout, "w")))) {
2054: (void) fprintf(fp, "%c", 0x01);
2055: (void) fprintf(fp, "scp: ");
2056: va_start(ap, fmt);
2057: (void) vfprintf(fp, fmt, ap);
2058: va_end(ap);
2059: (void) fprintf(fp, "\n");
2060: (void) fflush(fp);
2061: }
1.18 markus 2062:
2063: if (!iamremote) {
1.73 markus 2064: va_start(ap, fmt);
1.186 schwarze 2065: vfmprintf(stderr, fmt, ap);
1.73 markus 2066: va_end(ap);
1.18 markus 2067: fprintf(stderr, "\n");
2068: }
1.209 djm 2069: }
2070:
2071: /*
2072: * Notes a sink error for sending at the end of a file transfer. Returns 0 if
2073: * no error has been noted or -1 otherwise. Use note_err(NULL) to flush
2074: * any active error at the end of the transfer.
2075: */
2076: int
2077: note_err(const char *fmt, ...)
2078: {
2079: static char *emsg;
2080: va_list ap;
2081:
2082: /* Replay any previously-noted error */
2083: if (fmt == NULL) {
2084: if (emsg == NULL)
2085: return 0;
2086: run_err("%s", emsg);
2087: free(emsg);
2088: emsg = NULL;
2089: return -1;
2090: }
2091:
2092: errs++;
2093: /* Prefer first-noted error */
2094: if (emsg != NULL)
2095: return -1;
2096:
2097: va_start(ap, fmt);
2098: vasnmprintf(&emsg, INT_MAX, NULL, fmt, ap);
2099: va_end(ap);
2100: return -1;
1.1 deraadt 2101: }
2102:
2103: void
1.104 djm 2104: verifydir(char *cp)
1.1 deraadt 2105: {
2106: struct stat stb;
2107:
2108: if (!stat(cp, &stb)) {
2109: if (S_ISDIR(stb.st_mode))
2110: return;
2111: errno = ENOTDIR;
2112: }
2113: run_err("%s: %s", cp, strerror(errno));
1.123 avsm 2114: killchild(0);
1.1 deraadt 2115: }
2116:
2117: int
1.104 djm 2118: okname(char *cp0)
1.1 deraadt 2119: {
2120: int c;
2121: char *cp;
2122:
2123: cp = cp0;
2124: do {
1.75 deraadt 2125: c = (int)*cp;
1.1 deraadt 2126: if (c & 0200)
2127: goto bad;
1.179 deraadt 2128: if (!isalpha(c) && !isdigit((unsigned char)c)) {
1.101 markus 2129: switch (c) {
2130: case '\'':
2131: case '"':
2132: case '`':
2133: case ' ':
2134: case '#':
2135: goto bad;
2136: default:
2137: break;
2138: }
2139: }
1.1 deraadt 2140: } while (*++cp);
2141: return (1);
2142:
1.186 schwarze 2143: bad: fmprintf(stderr, "%s: invalid user name\n", cp0);
1.1 deraadt 2144: return (0);
2145: }
2146:
2147: BUF *
1.104 djm 2148: allocbuf(BUF *bp, int fd, int blksize)
1.1 deraadt 2149: {
2150: size_t size;
2151: struct stat stb;
2152:
1.205 deraadt 2153: if (fstat(fd, &stb) == -1) {
1.1 deraadt 2154: run_err("fstat: %s", strerror(errno));
2155: return (0);
2156: }
1.187 deraadt 2157: size = ROUNDUP(stb.st_blksize, blksize);
1.95 markus 2158: if (size == 0)
1.18 markus 2159: size = blksize;
1.1 deraadt 2160: if (bp->cnt >= size)
2161: return (bp);
1.192 deraadt 2162: bp->buf = xrecallocarray(bp->buf, bp->cnt, size, 1);
1.1 deraadt 2163: bp->cnt = size;
2164: return (bp);
2165: }
2166:
2167: void
1.104 djm 2168: lostconn(int signo)
1.1 deraadt 2169: {
2170: if (!iamremote)
1.172 dtucker 2171: (void)write(STDERR_FILENO, "lost connection\n", 16);
1.74 markus 2172: if (signo)
2173: _exit(1);
2174: else
2175: exit(1);
1.225 djm 2176: }
2177:
2178: void
2179: cleanup_exit(int i)
2180: {
2181: if (remin > 0)
2182: close(remin);
2183: if (remout > 0)
2184: close(remout);
2185: if (remin2 > 0)
2186: close(remin2);
2187: if (remout2 > 0)
2188: close(remout2);
2189: if (do_cmd_pid > 0)
1.256 dtucker 2190: (void)waitpid(do_cmd_pid, NULL, 0);
1.225 djm 2191: if (do_cmd_pid2 > 0)
1.256 dtucker 2192: (void)waitpid(do_cmd_pid2, NULL, 0);
1.225 djm 2193: exit(i);
1.4 aaron 2194: }
![[BACK]](/icons/back.gif){kind=icon}
Return to scp.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / ssh