Annotation of src/usr.bin/ssh/scp.c, Revision 1.216
1.216 ! djm 1: /* $OpenBSD: scp.c,v 1.215 2021/07/05 00:25:42 djm Exp $ */
1.1 deraadt 2: /*
1.38 deraadt 3: * scp - secure remote copy. This is basically patched BSD rcp which
4: * uses ssh to do the data transfer (instead of using rcmd).
1.27 markus 5: *
1.38 deraadt 6: * NOTE: This version should NOT be suid root. (This uses ssh to
7: * do the transfer and ssh has the necessary privileges.)
1.27 markus 8: *
1.38 deraadt 9: * 1995 Timo Rinne <tri@iki.fi>, Tatu Ylonen <ylo@cs.hut.fi>
10: *
11: * As far as I am concerned, the code I have written for this software
12: * can be used freely for any purpose. Any derived versions of this
13: * software must be clearly marked as such, and if the derived work is
14: * incompatible with the protocol description in the RFC file, it must be
15: * called by a name other than "ssh" or "Secure Shell".
1.39 markus 16: */
1.38 deraadt 17: /*
1.60 deraadt 18: * Copyright (c) 1999 Theo de Raadt. All rights reserved.
19: * Copyright (c) 1999 Aaron Campbell. All rights reserved.
1.27 markus 20: *
1.38 deraadt 21: * Redistribution and use in source and binary forms, with or without
22: * modification, are permitted provided that the following conditions
23: * are met:
24: * 1. Redistributions of source code must retain the above copyright
25: * notice, this list of conditions and the following disclaimer.
26: * 2. Redistributions in binary form must reproduce the above copyright
27: * notice, this list of conditions and the following disclaimer in the
28: * documentation and/or other materials provided with the distribution.
1.27 markus 29: *
1.38 deraadt 30: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
31: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
32: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
33: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
34: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
35: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
36: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
37: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
38: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
39: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
40: */
1.1 deraadt 41:
42: /*
1.35 deraadt 43: * Parts from:
44: *
1.1 deraadt 45: * Copyright (c) 1983, 1990, 1992, 1993, 1995
46: * The Regents of the University of California. All rights reserved.
47: *
48: * Redistribution and use in source and binary forms, with or without
49: * modification, are permitted provided that the following conditions
50: * are met:
51: * 1. Redistributions of source code must retain the above copyright
52: * notice, this list of conditions and the following disclaimer.
53: * 2. Redistributions in binary form must reproduce the above copyright
54: * notice, this list of conditions and the following disclaimer in the
55: * documentation and/or other materials provided with the distribution.
1.103 millert 56: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 57: * may be used to endorse or promote products derived from this software
58: * without specific prior written permission.
59: *
60: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
61: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
62: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
63: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
64: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
65: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
66: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
67: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
68: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
69: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
70: * SUCH DAMAGE.
71: *
72: */
73:
1.132 stevesk 74: #include <sys/types.h>
1.161 djm 75: #include <sys/poll.h>
1.132 stevesk 76: #include <sys/wait.h>
1.134 stevesk 77: #include <sys/stat.h>
1.151 stevesk 78: #include <sys/time.h>
1.155 deraadt 79: #include <sys/uio.h>
1.131 stevesk 80:
1.135 stevesk 81: #include <ctype.h>
1.131 stevesk 82: #include <dirent.h>
1.147 stevesk 83: #include <errno.h>
1.144 stevesk 84: #include <fcntl.h>
1.202 djm 85: #include <fnmatch.h>
1.216 ! djm 86: #include <glob.h>
! 87: #include <libgen.h>
1.186 schwarze 88: #include <locale.h>
1.143 stevesk 89: #include <pwd.h>
1.133 stevesk 90: #include <signal.h>
1.146 stevesk 91: #include <stdarg.h>
1.189 millert 92: #include <stdint.h>
1.154 stevesk 93: #include <stdio.h>
1.153 stevesk 94: #include <stdlib.h>
1.150 stevesk 95: #include <string.h>
1.149 stevesk 96: #include <time.h>
1.148 stevesk 97: #include <unistd.h>
1.181 deraadt 98: #include <limits.h>
1.158 dtucker 99: #include <vis.h>
1.1 deraadt 100:
101: #include "xmalloc.h"
1.193 millert 102: #include "ssh.h"
1.51 markus 103: #include "atomicio.h"
1.50 markus 104: #include "pathnames.h"
1.51 markus 105: #include "log.h"
1.69 mouring 106: #include "misc.h"
1.97 fgsch 107: #include "progressmeter.h"
1.186 schwarze 108: #include "utf8.h"
1.1 deraadt 109:
1.216 ! djm 110: #include "sftp-common.h"
! 111: #include "sftp-client.h"
! 112:
1.161 djm 113: #define COPY_BUFLEN 16384
114:
1.216 ! djm 115: int do_cmd(char *program, char *host, char *remuser, int port, char *cmd,
! 116: int *fdin, int *fdout);
! 117: int do_cmd2(char *host, char *remuser, int port, char *cmd,
! 118: int fdin, int fdout);
1.11 aaron 119:
1.70 mouring 120: /* Struct for addargs */
121: arglist args;
1.168 djm 122: arglist remote_remote_args;
1.41 markus 123:
1.99 markus 124: /* Bandwidth limit */
1.167 djm 125: long long limit_kbps = 0;
126: struct bwlimit bwlimit;
1.99 markus 127:
1.11 aaron 128: /* Name of current file being transferred. */
129: char *curfile;
1.4 aaron 130:
1.1 deraadt 131: /* This is set to non-zero to enable verbose mode. */
1.17 markus 132: int verbose_mode = 0;
1.216 ! djm 133: LogLevel log_level = SYSLOG_LEVEL_INFO;
1.1 deraadt 134:
1.6 aaron 135: /* This is set to zero if the progressmeter is not desired. */
136: int showprogress = 1;
137:
1.169 markus 138: /*
139: * This is set to non-zero if remote-remote copy should be piped
140: * through this process.
141: */
142: int throughlocal = 0;
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;
152:
1.216 ! djm 153: /* Needed for sftp */
! 154: volatile sig_atomic_t interrupted = 0;
! 155:
! 156: int remote_glob(struct sftp_conn *, const char *, int,
! 157: int (*)(const char *, int), glob_t *); /* proto for sftp-glob.c */
! 158:
1.105 djm 159: static void
160: killchild(int signo)
161: {
1.119 dtucker 162: if (do_cmd_pid > 1) {
1.123 avsm 163: kill(do_cmd_pid, signo ? signo : SIGTERM);
1.119 dtucker 164: waitpid(do_cmd_pid, NULL, 0);
165: }
1.105 djm 166:
1.123 avsm 167: if (signo)
168: _exit(1);
169: exit(1);
1.105 djm 170: }
1.92 markus 171:
1.166 millert 172: static void
173: suspchild(int signo)
174: {
175: int status;
176:
177: if (do_cmd_pid > 1) {
178: kill(do_cmd_pid, signo);
179: while (waitpid(do_cmd_pid, &status, WUNTRACED) == -1 &&
180: errno == EINTR)
181: ;
182: kill(getpid(), SIGSTOP);
183: }
184: }
185:
1.129 djm 186: static int
187: do_local_cmd(arglist *a)
188: {
189: u_int i;
190: int status;
191: pid_t pid;
192:
193: if (a->num == 0)
194: fatal("do_local_cmd: no arguments");
195:
196: if (verbose_mode) {
197: fprintf(stderr, "Executing:");
198: for (i = 0; i < a->num; i++)
1.186 schwarze 199: fmprintf(stderr, " %s", a->list[i]);
1.129 djm 200: fprintf(stderr, "\n");
201: }
202: if ((pid = fork()) == -1)
203: fatal("do_local_cmd: fork: %s", strerror(errno));
204:
205: if (pid == 0) {
206: execvp(a->list[0], a->list);
207: perror(a->list[0]);
208: exit(1);
209: }
210:
211: do_cmd_pid = pid;
1.207 dtucker 212: ssh_signal(SIGTERM, killchild);
213: ssh_signal(SIGINT, killchild);
214: ssh_signal(SIGHUP, killchild);
1.129 djm 215:
216: while (waitpid(pid, &status, 0) == -1)
217: if (errno != EINTR)
218: fatal("do_local_cmd: waitpid: %s", strerror(errno));
219:
220: do_cmd_pid = -1;
221:
222: if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
223: return (-1);
224:
225: return (0);
226: }
227:
1.20 markus 228: /*
229: * This function executes the given command as the specified user on the
230: * given host. This returns < 0 if execution fails, and >= 0 otherwise. This
231: * assigns the input and output file descriptors on success.
232: */
1.1 deraadt 233:
1.27 markus 234: int
1.216 ! djm 235: do_cmd(char *program, char *host, char *remuser, int port, char *cmd,
! 236: int *fdin, int *fdout)
1.1 deraadt 237: {
1.18 markus 238: int pin[2], pout[2], reserved[2];
239:
240: if (verbose_mode)
1.186 schwarze 241: fmprintf(stderr,
1.78 deraadt 242: "Executing: program %s host %s, user %s, command %s\n",
1.216 ! djm 243: program, host,
1.78 deraadt 244: remuser ? remuser : "(unspecified)", cmd);
1.18 markus 245:
1.193 millert 246: if (port == -1)
247: port = sshport;
248:
1.20 markus 249: /*
250: * Reserve two descriptors so that the real pipes won't get
251: * descriptors 0 and 1 because that will screw up dup2 below.
252: */
1.205 deraadt 253: if (pipe(reserved) == -1)
1.142 markus 254: fatal("pipe: %s", strerror(errno));
1.18 markus 255:
256: /* Create a socket pair for communicating with ssh. */
1.205 deraadt 257: if (pipe(pin) == -1)
1.18 markus 258: fatal("pipe: %s", strerror(errno));
1.205 deraadt 259: if (pipe(pout) == -1)
1.18 markus 260: fatal("pipe: %s", strerror(errno));
261:
262: /* Free the reserved descriptors. */
263: close(reserved[0]);
264: close(reserved[1]);
1.166 millert 265:
1.207 dtucker 266: ssh_signal(SIGTSTP, suspchild);
267: ssh_signal(SIGTTIN, suspchild);
268: ssh_signal(SIGTTOU, suspchild);
1.18 markus 269:
1.106 nino 270: /* Fork a child to execute the command on the remote host using ssh. */
1.92 markus 271: do_cmd_pid = fork();
272: if (do_cmd_pid == 0) {
1.18 markus 273: /* Child. */
274: close(pin[1]);
275: close(pout[0]);
276: dup2(pin[0], 0);
277: dup2(pout[1], 1);
278: close(pin[0]);
279: close(pout[1]);
280:
1.216 ! djm 281: replacearg(&args, 0, "%s", program);
1.193 millert 282: if (port != -1) {
283: addargs(&args, "-p");
284: addargs(&args, "%d", port);
285: }
1.165 guenther 286: if (remuser != NULL) {
287: addargs(&args, "-l");
288: addargs(&args, "%s", remuser);
289: }
290: addargs(&args, "--");
1.70 mouring 291: addargs(&args, "%s", host);
292: addargs(&args, "%s", cmd);
1.18 markus 293:
1.216 ! djm 294: execvp(program, args.list);
! 295: perror(program);
1.18 markus 296: exit(1);
1.92 markus 297: } else if (do_cmd_pid == -1) {
298: fatal("fork: %s", strerror(errno));
1.18 markus 299: }
300: /* Parent. Close the other side, and return the local side. */
301: close(pin[0]);
302: *fdout = pin[1];
303: close(pout[1]);
304: *fdin = pout[0];
1.207 dtucker 305: ssh_signal(SIGTERM, killchild);
306: ssh_signal(SIGINT, killchild);
307: ssh_signal(SIGHUP, killchild);
1.18 markus 308: return 0;
1.1 deraadt 309: }
310:
1.169 markus 311: /*
1.196 djm 312: * This function executes a command similar to do_cmd(), but expects the
1.169 markus 313: * input and output descriptors to be setup by a previous call to do_cmd().
314: * This way the input and output of two commands can be connected.
315: */
316: int
1.193 millert 317: do_cmd2(char *host, char *remuser, int port, char *cmd, int fdin, int fdout)
1.169 markus 318: {
319: pid_t pid;
320: int status;
321:
322: if (verbose_mode)
1.186 schwarze 323: fmprintf(stderr,
1.169 markus 324: "Executing: 2nd program %s host %s, user %s, command %s\n",
325: ssh_program, host,
326: remuser ? remuser : "(unspecified)", cmd);
327:
1.193 millert 328: if (port == -1)
329: port = sshport;
330:
1.169 markus 331: /* Fork a child to execute the command on the remote host using ssh. */
332: pid = fork();
333: if (pid == 0) {
334: dup2(fdin, 0);
335: dup2(fdout, 1);
336:
337: replacearg(&args, 0, "%s", ssh_program);
1.193 millert 338: if (port != -1) {
339: addargs(&args, "-p");
340: addargs(&args, "%d", port);
341: }
1.169 markus 342: if (remuser != NULL) {
343: addargs(&args, "-l");
344: addargs(&args, "%s", remuser);
345: }
1.208 markus 346: addargs(&args, "-oBatchMode=yes");
1.169 markus 347: addargs(&args, "--");
348: addargs(&args, "%s", host);
349: addargs(&args, "%s", cmd);
350:
351: execvp(ssh_program, args.list);
352: perror(ssh_program);
353: exit(1);
354: } else if (pid == -1) {
355: fatal("fork: %s", strerror(errno));
356: }
357: while (waitpid(pid, &status, 0) == -1)
358: if (errno != EINTR)
359: fatal("do_cmd2: waitpid: %s", strerror(errno));
360: return 0;
361: }
362:
1.1 deraadt 363: typedef struct {
1.124 djm 364: size_t cnt;
1.1 deraadt 365: char *buf;
366: } BUF;
367:
1.18 markus 368: BUF *allocbuf(BUF *, int, int);
369: void lostconn(int);
370: int okname(char *);
1.211 millert 371: void run_err(const char *,...)
372: __attribute__((__format__ (printf, 1, 2)))
373: __attribute__((__nonnull__ (1)));
374: int note_err(const char *,...)
375: __attribute__((__format__ (printf, 1, 2)));
1.18 markus 376: void verifydir(char *);
1.1 deraadt 377:
378: struct passwd *pwd;
1.18 markus 379: uid_t userid;
1.1 deraadt 380: int errs, remin, remout;
1.202 djm 381: int Tflag, pflag, iamremote, iamrecursive, targetshouldbedirectory;
1.1 deraadt 382:
383: #define CMDNEEDS 64
384: char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */
385:
1.216 ! djm 386: enum scp_mode_e {
! 387: MODE_SCP,
! 388: MODE_SFTP
! 389: };
! 390:
1.18 markus 391: int response(void);
392: void rsource(char *, struct stat *);
1.202 djm 393: void sink(int, char *[], const char *);
1.18 markus 394: void source(int, char *[]);
1.216 ! djm 395: void tolocal(int, char *[], enum scp_mode_e, char *sftp_direct);
! 396: void toremote(int, char *[], enum scp_mode_e, char *sftp_direct);
1.18 markus 397: void usage(void);
1.1 deraadt 398:
1.216 ! djm 399: void source_sftp(int, char *, char *, struct sftp_conn *, char **);
! 400: void sink_sftp(int, char *, const char *, struct sftp_conn *);
! 401:
1.1 deraadt 402: int
1.104 djm 403: main(int argc, char **argv)
1.1 deraadt 404: {
1.145 djm 405: int ch, fflag, tflag, status, n;
1.216 ! djm 406: char **newargv, *argv0;
1.167 djm 407: const char *errstr;
1.1 deraadt 408: extern char *optarg;
409: extern int optind;
1.216 ! djm 410: /* For now, keep SCP as default */
! 411: enum scp_mode_e mode = MODE_SCP;
! 412: char *sftp_direct = NULL;
1.126 djm 413:
414: /* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */
415: sanitise_stdfd();
1.145 djm 416:
1.186 schwarze 417: setlocale(LC_CTYPE, "");
418:
1.145 djm 419: /* Copy argv, because we modify it */
1.216 ! djm 420: argv0 = argv[0];
1.187 deraadt 421: newargv = xcalloc(MAXIMUM(argc + 1, 1), sizeof(*newargv));
1.145 djm 422: for (n = 0; n < argc; n++)
423: newargv[n] = xstrdup(argv[n]);
424: argv = newargv;
1.1 deraadt 425:
1.129 djm 426: memset(&args, '\0', sizeof(args));
1.168 djm 427: memset(&remote_remote_args, '\0', sizeof(remote_remote_args));
428: args.list = remote_remote_args.list = NULL;
1.129 djm 429: addargs(&args, "%s", ssh_program);
1.70 mouring 430: addargs(&args, "-x");
1.168 djm 431: addargs(&args, "-oPermitLocalCommand=no");
432: addargs(&args, "-oClearAllForwardings=yes");
1.195 djm 433: addargs(&args, "-oRemoteCommand=none");
434: addargs(&args, "-oRequestTTY=no");
1.41 markus 435:
1.202 djm 436: fflag = Tflag = tflag = 0;
437: while ((ch = getopt(argc, argv,
1.216 ! djm 438: "12346ABCTdfpqrtvD:F:J:M:P:S:c:i:l:o:")) != -1) {
1.18 markus 439: switch (ch) {
440: /* User-visible flags. */
1.100 markus 441: case '1':
1.190 djm 442: fatal("SSH protocol v.1 is no longer supported");
443: break;
1.100 markus 444: case '2':
1.190 djm 445: /* Ignored */
446: break;
1.212 djm 447: case 'A':
1.23 markus 448: case '4':
1.41 markus 449: case '6':
450: case 'C':
1.70 mouring 451: addargs(&args, "-%c", ch);
1.168 djm 452: addargs(&remote_remote_args, "-%c", ch);
1.41 markus 453: break;
1.216 ! djm 454: case 'D':
! 455: sftp_direct = optarg;
! 456: break;
1.169 markus 457: case '3':
458: throughlocal = 1;
459: break;
1.41 markus 460: case 'o':
461: case 'c':
462: case 'i':
1.83 stevesk 463: case 'F':
1.199 tb 464: case 'J':
1.168 djm 465: addargs(&remote_remote_args, "-%c", ch);
466: addargs(&remote_remote_args, "%s", optarg);
1.165 guenther 467: addargs(&args, "-%c", ch);
468: addargs(&args, "%s", optarg);
1.23 markus 469: break;
1.41 markus 470: case 'P':
1.193 millert 471: sshport = a2port(optarg);
472: if (sshport <= 0)
473: fatal("bad port \"%s\"\n", optarg);
1.41 markus 474: break;
475: case 'B':
1.168 djm 476: addargs(&remote_remote_args, "-oBatchmode=yes");
477: addargs(&args, "-oBatchmode=yes");
1.23 markus 478: break;
1.216 ! djm 479: case 'M':
! 480: if (strcmp(optarg, "sftp") == 0)
! 481: mode = MODE_SFTP;
! 482: else if (strcmp(optarg, "scp") == 0)
! 483: mode = MODE_SCP;
! 484: else
! 485: usage();
! 486: break;
1.99 markus 487: case 'l':
1.167 djm 488: limit_kbps = strtonum(optarg, 1, 100 * 1024 * 1024,
489: &errstr);
490: if (errstr != NULL)
1.99 markus 491: usage();
1.167 djm 492: limit_kbps *= 1024; /* kbps */
493: bandwidth_limit_init(&bwlimit, limit_kbps, COPY_BUFLEN);
1.99 markus 494: break;
1.1 deraadt 495: case 'p':
496: pflag = 1;
497: break;
498: case 'r':
499: iamrecursive = 1;
500: break;
1.34 deraadt 501: case 'S':
1.41 markus 502: ssh_program = xstrdup(optarg);
503: break;
504: case 'v':
1.72 markus 505: addargs(&args, "-v");
1.168 djm 506: addargs(&remote_remote_args, "-v");
1.216 ! djm 507: if (verbose_mode == 0)
! 508: log_level = SYSLOG_LEVEL_DEBUG1;
! 509: else if (log_level < SYSLOG_LEVEL_DEBUG3)
! 510: log_level++;
1.41 markus 511: verbose_mode = 1;
512: break;
513: case 'q':
1.111 dtucker 514: addargs(&args, "-q");
1.168 djm 515: addargs(&remote_remote_args, "-q");
1.41 markus 516: showprogress = 0;
1.34 deraadt 517: break;
518:
1.18 markus 519: /* Server options. */
1.1 deraadt 520: case 'd':
521: targetshouldbedirectory = 1;
522: break;
1.18 markus 523: case 'f': /* "from" */
1.1 deraadt 524: iamremote = 1;
525: fflag = 1;
526: break;
1.18 markus 527: case 't': /* "to" */
1.1 deraadt 528: iamremote = 1;
529: tflag = 1;
530: break;
1.202 djm 531: case 'T':
532: Tflag = 1;
533: break;
1.1 deraadt 534: default:
535: usage();
536: }
1.202 djm 537: }
1.1 deraadt 538: argc -= optind;
539: argv += optind;
540:
1.216 ! djm 541: log_init(argv0, log_level, SYSLOG_FACILITY_USER, 1);
! 542:
1.212 djm 543: /* Do this last because we want the user to be able to override it */
544: addargs(&args, "-oForwardAgent=no");
545:
1.216 ! djm 546: if (mode != MODE_SFTP && sftp_direct != NULL)
! 547: fatal("SFTP direct can be used only in SFTP mode");
! 548:
! 549: if (mode == MODE_SFTP && iamremote)
! 550: fatal("The server can not be ran in SFTP mode");
! 551:
1.1 deraadt 552: if ((pwd = getpwuid(userid = getuid())) == NULL)
1.108 deraadt 553: fatal("unknown user %u", (u_int) userid);
1.1 deraadt 554:
1.156 djm 555: if (!isatty(STDOUT_FILENO))
1.7 deraadt 556: showprogress = 0;
1.184 deraadt 557:
558: if (pflag) {
559: /* Cannot pledge: -p allows setuid/setgid files... */
560: } else {
561: if (pledge("stdio rpath wpath cpath fattr tty proc exec",
562: NULL) == -1) {
563: perror("pledge");
564: exit(1);
565: }
566: }
1.7 deraadt 567:
1.1 deraadt 568: remin = STDIN_FILENO;
569: remout = STDOUT_FILENO;
570:
1.52 stevesk 571: if (fflag) {
1.18 markus 572: /* Follow "protocol", send data. */
573: (void) response();
1.1 deraadt 574: source(argc, argv);
575: exit(errs != 0);
576: }
1.18 markus 577: if (tflag) {
578: /* Receive data. */
1.202 djm 579: sink(argc, argv, NULL);
1.1 deraadt 580: exit(errs != 0);
581: }
582: if (argc < 2)
583: usage();
584: if (argc > 2)
585: targetshouldbedirectory = 1;
586:
587: remin = remout = -1;
1.92 markus 588: do_cmd_pid = -1;
1.1 deraadt 589: /* Command to be executed on remote system using "ssh". */
1.55 deraadt 590: (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s",
591: verbose_mode ? " -v" : "",
1.35 deraadt 592: iamrecursive ? " -r" : "", pflag ? " -p" : "",
593: targetshouldbedirectory ? " -d" : "");
1.1 deraadt 594:
1.207 dtucker 595: (void) ssh_signal(SIGPIPE, lostconn);
1.1 deraadt 596:
1.193 millert 597: if (colon(argv[argc - 1])) /* Dest is remote host. */
1.216 ! djm 598: toremote(argc, argv, mode, sftp_direct);
1.1 deraadt 599: else {
600: if (targetshouldbedirectory)
601: verifydir(argv[argc - 1]);
1.216 ! djm 602: tolocal(argc, argv, mode, sftp_direct); /* Dest is local host. */
1.92 markus 603: }
604: /*
605: * Finally check the exit status of the ssh process, if one was forked
1.164 stevesk 606: * and no error has occurred yet
1.92 markus 607: */
608: if (do_cmd_pid != -1 && errs == 0) {
609: if (remin != -1)
610: (void) close(remin);
611: if (remout != -1)
612: (void) close(remout);
613: if (waitpid(do_cmd_pid, &status, 0) == -1)
614: errs = 1;
615: else {
616: if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
617: errs = 1;
618: }
1.1 deraadt 619: }
620: exit(errs != 0);
621: }
622:
1.167 djm 623: /* Callback from atomicio6 to update progress meter and limit bandwidth */
624: static int
625: scpio(void *_cnt, size_t s)
1.161 djm 626: {
1.167 djm 627: off_t *cnt = (off_t *)_cnt;
628:
629: *cnt += s;
1.201 dtucker 630: refresh_progress_meter(0);
1.167 djm 631: if (limit_kbps > 0)
632: bandwidth_limit(&bwlimit, s);
633: return 0;
1.161 djm 634: }
635:
1.176 guenther 636: static int
637: do_times(int fd, int verb, const struct stat *sb)
638: {
639: /* strlen(2^64) == 20; strlen(10^6) == 7 */
640: char buf[(20 + 7 + 2) * 2 + 2];
641:
642: (void)snprintf(buf, sizeof(buf), "T%llu 0 %llu 0\n",
643: (unsigned long long) (sb->st_mtime < 0 ? 0 : sb->st_mtime),
644: (unsigned long long) (sb->st_atime < 0 ? 0 : sb->st_atime));
645: if (verb) {
646: fprintf(stderr, "File mtime %lld atime %lld\n",
647: (long long)sb->st_mtime, (long long)sb->st_atime);
648: fprintf(stderr, "Sending file timestamps: %s", buf);
649: }
650: (void) atomicio(vwrite, fd, buf, strlen(buf));
651: return (response());
652: }
653:
1.194 millert 654: static int
655: parse_scp_uri(const char *uri, char **userp, char **hostp, int *portp,
1.214 djm 656: char **pathp)
1.194 millert 657: {
658: int r;
659:
660: r = parse_uri("scp", uri, userp, hostp, portp, pathp);
661: if (r == 0 && *pathp == NULL)
662: *pathp = xstrdup(".");
663: return r;
664: }
665:
1.204 djm 666: /* Appends a string to an array; returns 0 on success, -1 on alloc failure */
667: static int
668: append(char *cp, char ***ap, size_t *np)
669: {
670: char **tmp;
671:
672: if ((tmp = reallocarray(*ap, *np + 1, sizeof(*tmp))) == NULL)
673: return -1;
674: tmp[(*np)] = cp;
675: (*np)++;
676: *ap = tmp;
677: return 0;
678: }
679:
680: /*
681: * Finds the start and end of the first brace pair in the pattern.
682: * returns 0 on success or -1 for invalid patterns.
683: */
684: static int
685: find_brace(const char *pattern, int *startp, int *endp)
686: {
687: int i;
688: int in_bracket, brace_level;
689:
690: *startp = *endp = -1;
691: in_bracket = brace_level = 0;
692: for (i = 0; i < INT_MAX && *endp < 0 && pattern[i] != '\0'; i++) {
693: switch (pattern[i]) {
694: case '\\':
695: /* skip next character */
696: if (pattern[i + 1] != '\0')
697: i++;
698: break;
699: case '[':
700: in_bracket = 1;
701: break;
702: case ']':
703: in_bracket = 0;
704: break;
705: case '{':
706: if (in_bracket)
707: break;
708: if (pattern[i + 1] == '}') {
709: /* Protect a single {}, for find(1), like csh */
710: i++; /* skip */
711: break;
712: }
713: if (*startp == -1)
714: *startp = i;
715: brace_level++;
716: break;
717: case '}':
718: if (in_bracket)
719: break;
720: if (*startp < 0) {
721: /* Unbalanced brace */
722: return -1;
723: }
724: if (--brace_level <= 0)
725: *endp = i;
726: break;
727: }
728: }
729: /* unbalanced brackets/braces */
730: if (*endp < 0 && (*startp >= 0 || in_bracket))
731: return -1;
732: return 0;
733: }
734:
735: /*
736: * Assembles and records a successfully-expanded pattern, returns -1 on
737: * alloc failure.
738: */
739: static int
740: emit_expansion(const char *pattern, int brace_start, int brace_end,
741: int sel_start, int sel_end, char ***patternsp, size_t *npatternsp)
742: {
743: char *cp;
744: int o = 0, tail_len = strlen(pattern + brace_end + 1);
745:
746: if ((cp = malloc(brace_start + (sel_end - sel_start) +
747: tail_len + 1)) == NULL)
748: return -1;
749:
750: /* Pattern before initial brace */
751: if (brace_start > 0) {
752: memcpy(cp, pattern, brace_start);
753: o = brace_start;
754: }
755: /* Current braced selection */
756: if (sel_end - sel_start > 0) {
757: memcpy(cp + o, pattern + sel_start,
758: sel_end - sel_start);
759: o += sel_end - sel_start;
760: }
761: /* Remainder of pattern after closing brace */
762: if (tail_len > 0) {
763: memcpy(cp + o, pattern + brace_end + 1, tail_len);
764: o += tail_len;
765: }
766: cp[o] = '\0';
767: if (append(cp, patternsp, npatternsp) != 0) {
768: free(cp);
769: return -1;
770: }
771: return 0;
772: }
773:
774: /*
775: * Expand the first encountered brace in pattern, appending the expanded
776: * patterns it yielded to the *patternsp array.
777: *
778: * Returns 0 on success or -1 on allocation failure.
779: *
780: * Signals whether expansion was performed via *expanded and whether
781: * pattern was invalid via *invalid.
782: */
783: static int
784: brace_expand_one(const char *pattern, char ***patternsp, size_t *npatternsp,
785: int *expanded, int *invalid)
786: {
787: int i;
788: int in_bracket, brace_start, brace_end, brace_level;
789: int sel_start, sel_end;
790:
791: *invalid = *expanded = 0;
792:
793: if (find_brace(pattern, &brace_start, &brace_end) != 0) {
794: *invalid = 1;
795: return 0;
796: } else if (brace_start == -1)
797: return 0;
798:
799: in_bracket = brace_level = 0;
800: for (i = sel_start = brace_start + 1; i < brace_end; i++) {
801: switch (pattern[i]) {
802: case '{':
803: if (in_bracket)
804: break;
805: brace_level++;
806: break;
807: case '}':
808: if (in_bracket)
809: break;
810: brace_level--;
811: break;
812: case '[':
813: in_bracket = 1;
814: break;
815: case ']':
816: in_bracket = 0;
817: break;
818: case '\\':
819: if (i < brace_end - 1)
820: i++; /* skip */
821: break;
822: }
823: if (pattern[i] == ',' || i == brace_end - 1) {
824: if (in_bracket || brace_level > 0)
825: continue;
826: /* End of a selection, emit an expanded pattern */
827:
828: /* Adjust end index for last selection */
829: sel_end = (i == brace_end - 1) ? brace_end : i;
830: if (emit_expansion(pattern, brace_start, brace_end,
831: sel_start, sel_end, patternsp, npatternsp) != 0)
832: return -1;
833: /* move on to the next selection */
834: sel_start = i + 1;
835: continue;
836: }
837: }
838: if (in_bracket || brace_level > 0) {
839: *invalid = 1;
840: return 0;
841: }
842: /* success */
843: *expanded = 1;
844: return 0;
845: }
846:
847: /* Expand braces from pattern. Returns 0 on success, -1 on failure */
848: static int
849: brace_expand(const char *pattern, char ***patternsp, size_t *npatternsp)
850: {
851: char *cp, *cp2, **active = NULL, **done = NULL;
852: size_t i, nactive = 0, ndone = 0;
853: int ret = -1, invalid = 0, expanded = 0;
854:
855: *patternsp = NULL;
856: *npatternsp = 0;
857:
858: /* Start the worklist with the original pattern */
859: if ((cp = strdup(pattern)) == NULL)
860: return -1;
861: if (append(cp, &active, &nactive) != 0) {
862: free(cp);
863: return -1;
864: }
865: while (nactive > 0) {
866: cp = active[nactive - 1];
867: nactive--;
868: if (brace_expand_one(cp, &active, &nactive,
869: &expanded, &invalid) == -1) {
870: free(cp);
871: goto fail;
872: }
873: if (invalid)
1.213 djm 874: fatal_f("invalid brace pattern \"%s\"", cp);
1.204 djm 875: if (expanded) {
876: /*
877: * Current entry expanded to new entries on the
878: * active list; discard the progenitor pattern.
879: */
880: free(cp);
881: continue;
882: }
883: /*
884: * Pattern did not expand; append the finename component to
885: * the completed list
886: */
887: if ((cp2 = strrchr(cp, '/')) != NULL)
888: *cp2++ = '\0';
889: else
890: cp2 = cp;
891: if (append(xstrdup(cp2), &done, &ndone) != 0) {
892: free(cp);
893: goto fail;
894: }
895: free(cp);
896: }
897: /* success */
898: *patternsp = done;
899: *npatternsp = ndone;
900: done = NULL;
901: ndone = 0;
902: ret = 0;
903: fail:
904: for (i = 0; i < nactive; i++)
905: free(active[i]);
906: free(active);
907: for (i = 0; i < ndone; i++)
908: free(done[i]);
909: free(done);
910: return ret;
911: }
912:
1.216 ! djm 913: static struct sftp_conn *
! 914: do_sftp_connect(char *host, char *user, int port, char *sftp_direct)
! 915: {
! 916: if (sftp_direct == NULL) {
! 917: addargs(&args, "-s");
! 918: if (do_cmd(ssh_program, host, user, port, "sftp",
! 919: &remin, &remout) < 0)
! 920: return NULL;
! 921:
! 922: } else {
! 923: args.list = NULL;
! 924: addargs(&args, "sftp-server");
! 925: if (do_cmd(sftp_direct, host, NULL, -1, "sftp",
! 926: &remin, &remout) < 0)
! 927: return NULL;
! 928: }
! 929: return do_init(remin, remout, 32768, 64, limit_kbps);
! 930: }
! 931:
1.1 deraadt 932: void
1.216 ! djm 933: toremote(int argc, char **argv, enum scp_mode_e mode, char *sftp_direct)
1.1 deraadt 934: {
1.193 millert 935: char *suser = NULL, *host = NULL, *src = NULL;
936: char *bp, *tuser, *thost, *targ;
1.216 ! djm 937: char *remote_path = NULL;
1.193 millert 938: int sport = -1, tport = -1;
1.216 ! djm 939: struct sftp_conn *conn = NULL;
1.129 djm 940: arglist alist;
1.193 millert 941: int i, r;
1.168 djm 942: u_int j;
1.129 djm 943:
944: memset(&alist, '\0', sizeof(alist));
945: alist.list = NULL;
1.1 deraadt 946:
1.193 millert 947: /* Parse target */
1.194 millert 948: r = parse_scp_uri(argv[argc - 1], &tuser, &thost, &tport, &targ);
949: if (r == -1) {
950: fmprintf(stderr, "%s: invalid uri\n", argv[argc - 1]);
951: ++errs;
952: goto out;
953: }
1.193 millert 954: if (r != 0) {
955: if (parse_user_host_path(argv[argc - 1], &tuser, &thost,
1.194 millert 956: &targ) == -1) {
957: fmprintf(stderr, "%s: invalid target\n", argv[argc - 1]);
958: ++errs;
1.193 millert 959: goto out;
1.194 millert 960: }
1.129 djm 961: }
962:
1.193 millert 963: /* Parse source files */
1.1 deraadt 964: for (i = 0; i < argc - 1; i++) {
1.193 millert 965: free(suser);
966: free(host);
967: free(src);
1.194 millert 968: r = parse_scp_uri(argv[i], &suser, &host, &sport, &src);
969: if (r == -1) {
970: fmprintf(stderr, "%s: invalid uri\n", argv[i]);
971: ++errs;
972: continue;
973: }
974: if (r != 0) {
1.193 millert 975: parse_user_host_path(argv[i], &suser, &host, &src);
1.194 millert 976: }
1.193 millert 977: if (suser != NULL && !okname(suser)) {
978: ++errs;
979: continue;
980: }
981: if (host && throughlocal) { /* extended remote to remote */
1.216 ! djm 982: if (mode == MODE_SFTP) {
! 983: /* TODO */
! 984: fatal("Extended remote to remote through local "
! 985: "is not yet supported with SFTP");
! 986: }
1.171 djm 987: xasprintf(&bp, "%s -f %s%s", cmd,
988: *src == '-' ? "-- " : "", src);
1.216 ! djm 989: if (do_cmd(ssh_program, host, suser, sport, bp,
! 990: &remin, &remout) < 0)
1.169 markus 991: exit(1);
1.173 djm 992: free(bp);
1.171 djm 993: xasprintf(&bp, "%s -t %s%s", cmd,
994: *targ == '-' ? "-- " : "", targ);
1.193 millert 995: if (do_cmd2(thost, tuser, tport, bp, remin, remout) < 0)
1.169 markus 996: exit(1);
1.173 djm 997: free(bp);
1.169 markus 998: (void) close(remin);
999: (void) close(remout);
1000: remin = remout = -1;
1.193 millert 1001: } else if (host) { /* standard remote to remote */
1.215 djm 1002: /*
1003: * Second remote user is passed to first remote side
1004: * via scp command-line. Ensure it contains no obvious
1005: * shell characters.
1006: */
1007: if (tuser != NULL && !okname(tuser)) {
1008: ++errs;
1009: continue;
1010: }
1.193 millert 1011: if (tport != -1 && tport != SSH_DEFAULT_PORT) {
1012: /* This would require the remote support URIs */
1013: fatal("target port not supported with two "
1014: "remote hosts without the -3 option");
1015: }
1016:
1.129 djm 1017: freeargs(&alist);
1018: addargs(&alist, "%s", ssh_program);
1019: addargs(&alist, "-x");
1.168 djm 1020: addargs(&alist, "-oClearAllForwardings=yes");
1.129 djm 1021: addargs(&alist, "-n");
1.168 djm 1022: for (j = 0; j < remote_remote_args.num; j++) {
1023: addargs(&alist, "%s",
1024: remote_remote_args.list[j]);
1025: }
1.193 millert 1026:
1027: if (sport != -1) {
1028: addargs(&alist, "-p");
1029: addargs(&alist, "%d", sport);
1030: }
1031: if (suser) {
1.129 djm 1032: addargs(&alist, "-l");
1033: addargs(&alist, "%s", suser);
1.23 markus 1034: }
1.165 guenther 1035: addargs(&alist, "--");
1.129 djm 1036: addargs(&alist, "%s", host);
1037: addargs(&alist, "%s", cmd);
1.216 ! djm 1038: /*
! 1039: * This will work only if the first remote scp
! 1040: * supports sftp mode
! 1041: */
! 1042: if (mode == MODE_SFTP) {
! 1043: addargs(&alist, "-M");
! 1044: addargs(&alist, "sftp");
! 1045: }
1.129 djm 1046: addargs(&alist, "%s", src);
1047: addargs(&alist, "%s%s%s:%s",
1048: tuser ? tuser : "", tuser ? "@" : "",
1049: thost, targ);
1050: if (do_local_cmd(&alist) != 0)
1.109 markus 1051: errs = 1;
1.18 markus 1052: } else { /* local to remote */
1.216 ! djm 1053: if (mode == MODE_SFTP) {
! 1054: if (remin == -1) {
! 1055: /* Connect to remote now */
! 1056: conn = do_sftp_connect(thost, tuser,
! 1057: tport, sftp_direct);
! 1058: if (conn == NULL) {
! 1059: fatal("Unable to open sftp "
! 1060: "connection");
! 1061: }
! 1062: }
! 1063:
! 1064: /* The protocol */
! 1065: source_sftp(1, argv[i], targ, conn,
! 1066: &remote_path);
! 1067: continue;
! 1068: }
! 1069: /* SCP */
1.1 deraadt 1070: if (remin == -1) {
1.171 djm 1071: xasprintf(&bp, "%s -t %s%s", cmd,
1072: *targ == '-' ? "-- " : "", targ);
1.216 ! djm 1073: if (do_cmd(ssh_program, thost, tuser, tport, bp,
! 1074: &remin, &remout) < 0)
1.18 markus 1075: exit(1);
1.1 deraadt 1076: if (response() < 0)
1077: exit(1);
1.173 djm 1078: free(bp);
1.1 deraadt 1079: }
1.18 markus 1080: source(1, argv + i);
1.1 deraadt 1081: }
1082: }
1.193 millert 1083: out:
1.216 ! djm 1084: if (mode == MODE_SFTP) {
! 1085: free(remote_path);
! 1086: free(conn);
! 1087: }
1.193 millert 1088: free(tuser);
1089: free(thost);
1090: free(targ);
1091: free(suser);
1092: free(host);
1093: free(src);
1.1 deraadt 1094: }
1095:
1096: void
1.216 ! djm 1097: tolocal(int argc, char **argv, enum scp_mode_e mode, char *sftp_direct)
1.1 deraadt 1098: {
1.193 millert 1099: char *bp, *host = NULL, *src = NULL, *suser = NULL;
1.129 djm 1100: arglist alist;
1.216 ! djm 1101: struct sftp_conn *conn = NULL;
1.193 millert 1102: int i, r, sport = -1;
1.129 djm 1103:
1104: memset(&alist, '\0', sizeof(alist));
1105: alist.list = NULL;
1.1 deraadt 1106:
1107: for (i = 0; i < argc - 1; i++) {
1.193 millert 1108: free(suser);
1109: free(host);
1110: free(src);
1.194 millert 1111: r = parse_scp_uri(argv[i], &suser, &host, &sport, &src);
1.193 millert 1112: if (r == -1) {
1.194 millert 1113: fmprintf(stderr, "%s: invalid uri\n", argv[i]);
1.193 millert 1114: ++errs;
1115: continue;
1116: }
1117: if (r != 0)
1118: parse_user_host_path(argv[i], &suser, &host, &src);
1119: if (suser != NULL && !okname(suser)) {
1120: ++errs;
1121: continue;
1122: }
1123: if (!host) { /* Local to local. */
1.129 djm 1124: freeargs(&alist);
1125: addargs(&alist, "%s", _PATH_CP);
1126: if (iamrecursive)
1127: addargs(&alist, "-r");
1128: if (pflag)
1129: addargs(&alist, "-p");
1.165 guenther 1130: addargs(&alist, "--");
1.129 djm 1131: addargs(&alist, "%s", argv[i]);
1132: addargs(&alist, "%s", argv[argc-1]);
1133: if (do_local_cmd(&alist))
1.1 deraadt 1134: ++errs;
1135: continue;
1136: }
1.193 millert 1137: /* Remote to local. */
1.216 ! djm 1138: if (mode == MODE_SFTP) {
! 1139: conn = do_sftp_connect(host, suser, sport, sftp_direct);
! 1140: if (conn == NULL) {
! 1141: error("Couldn't make sftp connection "
! 1142: "to server");
! 1143: ++errs;
! 1144: continue;
! 1145: }
! 1146:
! 1147: /* The protocol */
! 1148: sink_sftp(1, argv[argc - 1], src, conn);
! 1149:
! 1150: free(conn);
! 1151: (void) close(remin);
! 1152: (void) close(remout);
! 1153: remin = remout = -1;
! 1154: continue;
! 1155: }
! 1156: /* SCP */
1.171 djm 1157: xasprintf(&bp, "%s -f %s%s",
1158: cmd, *src == '-' ? "-- " : "", src);
1.216 ! djm 1159: if (do_cmd(ssh_program, host, suser, sport, bp, &remin,
! 1160: &remout) < 0) {
1.173 djm 1161: free(bp);
1.18 markus 1162: ++errs;
1163: continue;
1.1 deraadt 1164: }
1.173 djm 1165: free(bp);
1.202 djm 1166: sink(1, argv + argc - 1, src);
1.18 markus 1167: (void) close(remin);
1.1 deraadt 1168: remin = remout = -1;
1169: }
1.193 millert 1170: free(suser);
1171: free(host);
1172: free(src);
1.1 deraadt 1173: }
1174:
1175: void
1.216 ! djm 1176: source_sftp(int argc, char *src, char *targ,
! 1177: struct sftp_conn *conn, char **remote_path)
! 1178: {
! 1179: char *target = NULL, *filename = NULL, *abs_dst = NULL;
! 1180: int target_is_dir;
! 1181:
! 1182: if (*remote_path == NULL) {
! 1183: *remote_path = do_realpath(conn, ".");
! 1184: if (*remote_path == NULL)
! 1185: fatal("Unable to determine remote working directory");
! 1186: }
! 1187:
! 1188: if ((filename = basename(src)) == NULL)
! 1189: fatal("basename %s: %s", src, strerror(errno));
! 1190:
! 1191: /*
! 1192: * No need to glob here - the local shell already took care of
! 1193: * the expansions
! 1194: */
! 1195: target = xstrdup(targ);
! 1196: target = make_absolute(target, *remote_path);
! 1197: target_is_dir = remote_is_dir(conn, target);
! 1198: if (targetshouldbedirectory && !target_is_dir) {
! 1199: fatal("Target is not a directory, but more files selected "
! 1200: "for upload");
! 1201: }
! 1202: if (target_is_dir)
! 1203: abs_dst = path_append(target, filename);
! 1204: else {
! 1205: abs_dst = target;
! 1206: target = NULL;
! 1207: }
! 1208: debug3_f("copying local %s to remote %s", src, abs_dst);
! 1209:
! 1210: if (local_is_dir(src) && iamrecursive) {
! 1211: if (upload_dir(conn, src, abs_dst, pflag, 1, 0, 0) != 0) {
! 1212: fatal("failed to upload directory %s to %s",
! 1213: src, abs_dst);
! 1214: }
! 1215: } else if (do_upload(conn, src, abs_dst, pflag, 0, 0) != 0)
! 1216: fatal("failed to upload file %s to %s", src, abs_dst);
! 1217:
! 1218: free(abs_dst);
! 1219: free(target);
! 1220: }
! 1221:
! 1222: void
1.104 djm 1223: source(int argc, char **argv)
1.1 deraadt 1224: {
1225: struct stat stb;
1226: static BUF buffer;
1227: BUF *bp;
1.163 dtucker 1228: off_t i, statbytes;
1.180 djm 1229: size_t amt, nr;
1.125 dtucker 1230: int fd = -1, haderr, indx;
1.206 dtucker 1231: char *last, *name, buf[PATH_MAX + 128], encname[PATH_MAX];
1.65 deraadt 1232: int len;
1.1 deraadt 1233:
1234: for (indx = 0; indx < argc; ++indx) {
1.18 markus 1235: name = argv[indx];
1.11 aaron 1236: statbytes = 0;
1.65 deraadt 1237: len = strlen(name);
1238: while (len > 1 && name[len-1] == '/')
1239: name[--len] = '\0';
1.205 deraadt 1240: if ((fd = open(name, O_RDONLY|O_NONBLOCK, 0)) == -1)
1.158 dtucker 1241: goto syserr;
1.85 markus 1242: if (strchr(name, '\n') != NULL) {
1.158 dtucker 1243: strnvis(encname, name, sizeof(encname), VIS_NL);
1244: name = encname;
1.85 markus 1245: }
1.205 deraadt 1246: if (fstat(fd, &stb) == -1) {
1.1 deraadt 1247: syserr: run_err("%s: %s", name, strerror(errno));
1248: goto next;
1249: }
1.163 dtucker 1250: if (stb.st_size < 0) {
1251: run_err("%s: %s", name, "Negative file size");
1252: goto next;
1253: }
1.157 djm 1254: unset_nonblock(fd);
1.1 deraadt 1255: switch (stb.st_mode & S_IFMT) {
1256: case S_IFREG:
1257: break;
1258: case S_IFDIR:
1259: if (iamrecursive) {
1260: rsource(name, &stb);
1261: goto next;
1262: }
1263: /* FALLTHROUGH */
1264: default:
1265: run_err("%s: not a regular file", name);
1266: goto next;
1267: }
1268: if ((last = strrchr(name, '/')) == NULL)
1269: last = name;
1270: else
1271: ++last;
1.11 aaron 1272: curfile = last;
1.1 deraadt 1273: if (pflag) {
1.176 guenther 1274: if (do_times(remout, verbose_mode, &stb) < 0)
1.1 deraadt 1275: goto next;
1276: }
1277: #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
1.61 markus 1278: snprintf(buf, sizeof buf, "C%04o %lld %s\n",
1.47 markus 1279: (u_int) (stb.st_mode & FILEMODEMASK),
1.62 markus 1280: (long long)stb.st_size, last);
1.186 schwarze 1281: if (verbose_mode)
1282: fmprintf(stderr, "Sending file modes: %s", buf);
1.107 deraadt 1283: (void) atomicio(vwrite, remout, buf, strlen(buf));
1.1 deraadt 1284: if (response() < 0)
1285: goto next;
1.161 djm 1286: if ((bp = allocbuf(&buffer, fd, COPY_BUFLEN)) == NULL) {
1.127 deraadt 1287: next: if (fd != -1) {
1288: (void) close(fd);
1289: fd = -1;
1290: }
1.1 deraadt 1291: continue;
1292: }
1.97 fgsch 1293: if (showprogress)
1294: start_progress_meter(curfile, stb.st_size, &statbytes);
1.161 djm 1295: set_nonblock(remout);
1.1 deraadt 1296: for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
1297: amt = bp->cnt;
1.163 dtucker 1298: if (i + (off_t)amt > stb.st_size)
1.1 deraadt 1299: amt = stb.st_size - i;
1300: if (!haderr) {
1.180 djm 1301: if ((nr = atomicio(read, fd,
1302: bp->buf, amt)) != amt) {
1.122 avsm 1303: haderr = errno;
1.180 djm 1304: memset(bp->buf + nr, 0, amt - nr);
1305: }
1.1 deraadt 1306: }
1.161 djm 1307: /* Keep writing after error to retain sync */
1308: if (haderr) {
1309: (void)atomicio(vwrite, remout, bp->buf, amt);
1.180 djm 1310: memset(bp->buf, 0, amt);
1.161 djm 1311: continue;
1.1 deraadt 1312: }
1.167 djm 1313: if (atomicio6(vwrite, remout, bp->buf, amt, scpio,
1.161 djm 1314: &statbytes) != amt)
1315: haderr = errno;
1.1 deraadt 1316: }
1.161 djm 1317: unset_nonblock(remout);
1.4 aaron 1318:
1.127 deraadt 1319: if (fd != -1) {
1.205 deraadt 1320: if (close(fd) == -1 && !haderr)
1.127 deraadt 1321: haderr = errno;
1322: fd = -1;
1323: }
1.1 deraadt 1324: if (!haderr)
1.107 deraadt 1325: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 1326: else
1327: run_err("%s: %s", name, strerror(haderr));
1.18 markus 1328: (void) response();
1.185 dtucker 1329: if (showprogress)
1330: stop_progress_meter();
1.1 deraadt 1331: }
1332: }
1333:
1334: void
1.104 djm 1335: rsource(char *name, struct stat *statp)
1.1 deraadt 1336: {
1337: DIR *dirp;
1338: struct dirent *dp;
1.181 deraadt 1339: char *last, *vect[1], path[PATH_MAX];
1.1 deraadt 1340:
1341: if (!(dirp = opendir(name))) {
1342: run_err("%s: %s", name, strerror(errno));
1343: return;
1344: }
1345: last = strrchr(name, '/');
1.183 mmcc 1346: if (last == NULL)
1.1 deraadt 1347: last = name;
1348: else
1349: last++;
1350: if (pflag) {
1.176 guenther 1351: if (do_times(remout, verbose_mode, statp) < 0) {
1.1 deraadt 1352: closedir(dirp);
1353: return;
1354: }
1355: }
1.55 deraadt 1356: (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n",
1.47 markus 1357: (u_int) (statp->st_mode & FILEMODEMASK), 0, last);
1.18 markus 1358: if (verbose_mode)
1.186 schwarze 1359: fmprintf(stderr, "Entering directory: %s", path);
1.107 deraadt 1360: (void) atomicio(vwrite, remout, path, strlen(path));
1.1 deraadt 1361: if (response() < 0) {
1362: closedir(dirp);
1363: return;
1364: }
1.63 stevesk 1365: while ((dp = readdir(dirp)) != NULL) {
1.1 deraadt 1366: if (dp->d_ino == 0)
1367: continue;
1368: if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
1369: continue;
1370: if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) {
1371: run_err("%s/%s: name too long", name, dp->d_name);
1372: continue;
1373: }
1.55 deraadt 1374: (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name);
1.1 deraadt 1375: vect[0] = path;
1376: source(1, vect);
1377: }
1.18 markus 1378: (void) closedir(dirp);
1.107 deraadt 1379: (void) atomicio(vwrite, remout, "E\n", 2);
1.18 markus 1380: (void) response();
1.1 deraadt 1381: }
1382:
1.216 ! djm 1383: void
! 1384: sink_sftp(int argc, char *dst, const char *src, struct sftp_conn *conn)
! 1385: {
! 1386: char *abs_src = NULL;
! 1387: char *abs_dst = NULL;
! 1388: glob_t g;
! 1389: char *filename, *tmp = NULL, *remote_path = NULL;
! 1390: int i, r, err = 0;
! 1391:
! 1392: /*
! 1393: * Here, we need remote glob as SFTP can not depend on remote shell
! 1394: * expansions
! 1395: */
! 1396:
! 1397: remote_path = do_realpath(conn, ".");
! 1398: if (remote_path == NULL) {
! 1399: error("Could not obtain remote working directory");
! 1400: /* TODO - gracefully degrade by using relative paths ? */
! 1401: err = -1;
! 1402: goto out;
! 1403: }
! 1404:
! 1405: abs_src = xstrdup(src);
! 1406: abs_src = make_absolute(abs_src, remote_path);
! 1407: free(remote_path);
! 1408: memset(&g, 0, sizeof(g));
! 1409:
! 1410: debug3_f("copying remote %s to local %s", abs_src, dst);
! 1411: if ((r = remote_glob(conn, abs_src, GLOB_MARK, NULL, &g)) != 0) {
! 1412: if (r == GLOB_NOSPACE)
! 1413: error("Too many glob matches for \"%s\".", abs_src);
! 1414: else
! 1415: error("File \"%s\" not found.", abs_src);
! 1416: err = -1;
! 1417: goto out;
! 1418: }
! 1419:
! 1420: if (g.gl_matchc > 1 && !local_is_dir(dst)) {
! 1421: error("Multiple files match pattern, but destination "
! 1422: "\"%s\" is not a directory", dst);
! 1423: err = -1;
! 1424: goto out;
! 1425: }
! 1426:
! 1427: for (i = 0; g.gl_pathv[i] && !interrupted; i++) {
! 1428: tmp = xstrdup(g.gl_pathv[i]);
! 1429: if ((filename = basename(tmp)) == NULL) {
! 1430: error("basename %s: %s", tmp, strerror(errno));
! 1431: free(tmp);
! 1432: err = -1;
! 1433: goto out;
! 1434: }
! 1435: free(tmp);
! 1436:
! 1437: if (local_is_dir(dst))
! 1438: abs_dst = path_append(dst, filename);
! 1439: else
! 1440: abs_dst = xstrdup(dst);
! 1441:
! 1442: debug("Fetching %s to %s\n", g.gl_pathv[i], abs_dst);
! 1443: if (globpath_is_dir(g.gl_pathv[i]) && iamrecursive) {
! 1444: if (download_dir(conn, g.gl_pathv[i], abs_dst, NULL,
! 1445: pflag, 1, 0, 0) == -1)
! 1446: err = -1;
! 1447: } else {
! 1448: if (do_download(conn, g.gl_pathv[i], abs_dst, NULL,
! 1449: pflag, 0, 0) == -1)
! 1450: err = -1;
! 1451: }
! 1452: free(abs_dst);
! 1453: abs_dst = NULL;
! 1454: }
! 1455:
! 1456: out:
! 1457: free(abs_src);
! 1458: globfree(&g);
! 1459: if (err == -1) {
! 1460: fatal("Failed to download file '%s'", src);
! 1461: }
! 1462: }
! 1463:
! 1464:
1.189 millert 1465: #define TYPE_OVERFLOW(type, val) \
1466: ((sizeof(type) == 4 && (val) > INT32_MAX) || \
1467: (sizeof(type) == 8 && (val) > INT64_MAX) || \
1468: (sizeof(type) != 4 && sizeof(type) != 8))
1469:
1.1 deraadt 1470: void
1.202 djm 1471: sink(int argc, char **argv, const char *src)
1.1 deraadt 1472: {
1473: static BUF buffer;
1474: struct stat stb;
1475: BUF *bp;
1.122 avsm 1476: off_t i;
1.124 djm 1477: size_t j, count;
1.140 deraadt 1478: int amt, exists, first, ofd;
1479: mode_t mode, omode, mask;
1.97 fgsch 1480: off_t size, statbytes;
1.176 guenther 1481: unsigned long long ull;
1.209 djm 1482: int setimes, targisdir, wrerr;
1.186 schwarze 1483: char ch, *cp, *np, *targ, *why, *vect[1], buf[2048], visbuf[2048];
1.204 djm 1484: char **patterns = NULL;
1485: size_t n, npatterns = 0;
1.40 markus 1486: struct timeval tv[2];
1.1 deraadt 1487:
1.66 stevesk 1488: #define atime tv[0]
1489: #define mtime tv[1]
1.118 deraadt 1490: #define SCREWUP(str) { why = str; goto screwup; }
1.1 deraadt 1491:
1.189 millert 1492: if (TYPE_OVERFLOW(time_t, 0) || TYPE_OVERFLOW(off_t, 0))
1493: SCREWUP("Unexpected off_t/time_t size");
1494:
1.1 deraadt 1495: setimes = targisdir = 0;
1496: mask = umask(0);
1497: if (!pflag)
1.18 markus 1498: (void) umask(mask);
1.1 deraadt 1499: if (argc != 1) {
1500: run_err("ambiguous target");
1501: exit(1);
1502: }
1503: targ = *argv;
1504: if (targetshouldbedirectory)
1505: verifydir(targ);
1.18 markus 1506:
1.107 deraadt 1507: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 1508: if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
1509: targisdir = 1;
1.202 djm 1510: if (src != NULL && !iamrecursive && !Tflag) {
1511: /*
1512: * Prepare to try to restrict incoming filenames to match
1513: * the requested destination file glob.
1514: */
1.204 djm 1515: if (brace_expand(src, &patterns, &npatterns) != 0)
1.213 djm 1516: fatal_f("could not expand pattern");
1.202 djm 1517: }
1.1 deraadt 1518: for (first = 1;; first = 0) {
1519: cp = buf;
1.122 avsm 1520: if (atomicio(read, remin, cp, 1) != 1)
1.204 djm 1521: goto done;
1.1 deraadt 1522: if (*cp++ == '\n')
1523: SCREWUP("unexpected <newline>");
1524: do {
1.30 deraadt 1525: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 1526: SCREWUP("lost connection");
1527: *cp++ = ch;
1528: } while (cp < &buf[sizeof(buf) - 1] && ch != '\n');
1529: *cp = 0;
1.114 markus 1530: if (verbose_mode)
1.186 schwarze 1531: fmprintf(stderr, "Sink: %s", buf);
1.1 deraadt 1532:
1533: if (buf[0] == '\01' || buf[0] == '\02') {
1.186 schwarze 1534: if (iamremote == 0) {
1535: (void) snmprintf(visbuf, sizeof(visbuf),
1536: NULL, "%s", buf + 1);
1.107 deraadt 1537: (void) atomicio(vwrite, STDERR_FILENO,
1.186 schwarze 1538: visbuf, strlen(visbuf));
1539: }
1.1 deraadt 1540: if (buf[0] == '\02')
1541: exit(1);
1542: ++errs;
1543: continue;
1544: }
1545: if (buf[0] == 'E') {
1.107 deraadt 1546: (void) atomicio(vwrite, remout, "", 1);
1.204 djm 1547: goto done;
1.1 deraadt 1548: }
1549: if (ch == '\n')
1550: *--cp = 0;
1551:
1552: cp = buf;
1553: if (*cp == 'T') {
1554: setimes++;
1555: cp++;
1.176 guenther 1556: if (!isdigit((unsigned char)*cp))
1557: SCREWUP("mtime.sec not present");
1558: ull = strtoull(cp, &cp, 10);
1.66 stevesk 1559: if (!cp || *cp++ != ' ')
1.1 deraadt 1560: SCREWUP("mtime.sec not delimited");
1.189 millert 1561: if (TYPE_OVERFLOW(time_t, ull))
1.176 guenther 1562: setimes = 0; /* out of range */
1563: mtime.tv_sec = ull;
1.66 stevesk 1564: mtime.tv_usec = strtol(cp, &cp, 10);
1.176 guenther 1565: if (!cp || *cp++ != ' ' || mtime.tv_usec < 0 ||
1566: mtime.tv_usec > 999999)
1.1 deraadt 1567: SCREWUP("mtime.usec not delimited");
1.176 guenther 1568: if (!isdigit((unsigned char)*cp))
1569: SCREWUP("atime.sec not present");
1570: ull = strtoull(cp, &cp, 10);
1.66 stevesk 1571: if (!cp || *cp++ != ' ')
1.1 deraadt 1572: SCREWUP("atime.sec not delimited");
1.189 millert 1573: if (TYPE_OVERFLOW(time_t, ull))
1.176 guenther 1574: setimes = 0; /* out of range */
1575: atime.tv_sec = ull;
1.66 stevesk 1576: atime.tv_usec = strtol(cp, &cp, 10);
1.176 guenther 1577: if (!cp || *cp++ != '\0' || atime.tv_usec < 0 ||
1578: atime.tv_usec > 999999)
1.1 deraadt 1579: SCREWUP("atime.usec not delimited");
1.107 deraadt 1580: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 1581: continue;
1582: }
1583: if (*cp != 'C' && *cp != 'D') {
1584: /*
1585: * Check for the case "rcp remote:foo\* local:bar".
1586: * In this case, the line "No match." can be returned
1587: * by the shell before the rcp command on the remote is
1588: * executed so the ^Aerror_message convention isn't
1589: * followed.
1590: */
1591: if (first) {
1592: run_err("%s", cp);
1593: exit(1);
1594: }
1595: SCREWUP("expected control record");
1596: }
1597: mode = 0;
1598: for (++cp; cp < buf + 5; cp++) {
1599: if (*cp < '0' || *cp > '7')
1600: SCREWUP("bad mode");
1601: mode = (mode << 3) | (*cp - '0');
1602: }
1.197 dtucker 1603: if (!pflag)
1604: mode &= ~mask;
1.1 deraadt 1605: if (*cp++ != ' ')
1606: SCREWUP("mode not delimited");
1607:
1.188 millert 1608: if (!isdigit((unsigned char)*cp))
1609: SCREWUP("size not present");
1610: ull = strtoull(cp, &cp, 10);
1611: if (!cp || *cp++ != ' ')
1.1 deraadt 1612: SCREWUP("size not delimited");
1.189 millert 1613: if (TYPE_OVERFLOW(off_t, ull))
1.188 millert 1614: SCREWUP("size out of range");
1615: size = (off_t)ull;
1616:
1.198 djm 1617: if (*cp == '\0' || strchr(cp, '/') != NULL ||
1618: strcmp(cp, ".") == 0 || strcmp(cp, "..") == 0) {
1.114 markus 1619: run_err("error: unexpected filename: %s", cp);
1620: exit(1);
1621: }
1.204 djm 1622: if (npatterns > 0) {
1623: for (n = 0; n < npatterns; n++) {
1624: if (fnmatch(patterns[n], cp, 0) == 0)
1625: break;
1626: }
1627: if (n >= npatterns)
1628: SCREWUP("filename does not match request");
1629: }
1.1 deraadt 1630: if (targisdir) {
1631: static char *namebuf;
1.124 djm 1632: static size_t cursize;
1.1 deraadt 1633: size_t need;
1634:
1635: need = strlen(targ) + strlen(cp) + 250;
1.55 deraadt 1636: if (need > cursize) {
1.173 djm 1637: free(namebuf);
1.18 markus 1638: namebuf = xmalloc(need);
1.55 deraadt 1639: cursize = need;
1640: }
1641: (void) snprintf(namebuf, need, "%s%s%s", targ,
1.88 mouring 1642: strcmp(targ, "/") ? "/" : "", cp);
1.1 deraadt 1643: np = namebuf;
1644: } else
1645: np = targ;
1.12 aaron 1646: curfile = cp;
1.1 deraadt 1647: exists = stat(np, &stb) == 0;
1648: if (buf[0] == 'D') {
1649: int mod_flag = pflag;
1.114 markus 1650: if (!iamrecursive)
1651: SCREWUP("received directory without -r");
1.1 deraadt 1652: if (exists) {
1653: if (!S_ISDIR(stb.st_mode)) {
1654: errno = ENOTDIR;
1655: goto bad;
1656: }
1657: if (pflag)
1.18 markus 1658: (void) chmod(np, mode);
1.1 deraadt 1659: } else {
1.214 djm 1660: /* Handle copying from a read-only directory */
1.1 deraadt 1661: mod_flag = 1;
1.205 deraadt 1662: if (mkdir(np, mode | S_IRWXU) == -1)
1.1 deraadt 1663: goto bad;
1664: }
1.58 danh 1665: vect[0] = xstrdup(np);
1.202 djm 1666: sink(1, vect, src);
1.1 deraadt 1667: if (setimes) {
1668: setimes = 0;
1.210 djm 1669: (void) utimes(vect[0], tv);
1.1 deraadt 1670: }
1671: if (mod_flag)
1.59 deraadt 1672: (void) chmod(vect[0], mode);
1.173 djm 1673: free(vect[0]);
1.1 deraadt 1674: continue;
1675: }
1676: omode = mode;
1.174 dtucker 1677: mode |= S_IWUSR;
1.205 deraadt 1678: if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) == -1) {
1.1 deraadt 1679: bad: run_err("%s: %s", np, strerror(errno));
1680: continue;
1681: }
1.107 deraadt 1682: (void) atomicio(vwrite, remout, "", 1);
1.161 djm 1683: if ((bp = allocbuf(&buffer, ofd, COPY_BUFLEN)) == NULL) {
1.18 markus 1684: (void) close(ofd);
1.1 deraadt 1685: continue;
1686: }
1687: cp = bp->buf;
1.209 djm 1688: wrerr = 0;
1.7 deraadt 1689:
1.209 djm 1690: /*
1691: * NB. do not use run_err() unless immediately followed by
1692: * exit() below as it may send a spurious reply that might
1693: * desyncronise us from the peer. Use note_err() instead.
1694: */
1.12 aaron 1695: statbytes = 0;
1.97 fgsch 1696: if (showprogress)
1697: start_progress_meter(curfile, size, &statbytes);
1.161 djm 1698: set_nonblock(remin);
1699: for (count = i = 0; i < size; i += bp->cnt) {
1700: amt = bp->cnt;
1.1 deraadt 1701: if (i + amt > size)
1702: amt = size - i;
1703: count += amt;
1704: do {
1.167 djm 1705: j = atomicio6(read, remin, cp, amt,
1706: scpio, &statbytes);
1.122 avsm 1707: if (j == 0) {
1.161 djm 1708: run_err("%s", j != EPIPE ?
1709: strerror(errno) :
1.63 stevesk 1710: "dropped connection");
1.1 deraadt 1711: exit(1);
1712: }
1713: amt -= j;
1714: cp += j;
1715: } while (amt > 0);
1.112 djm 1716:
1.1 deraadt 1717: if (count == bp->cnt) {
1718: /* Keep reading so we stay sync'd up. */
1.209 djm 1719: if (!wrerr) {
1.122 avsm 1720: if (atomicio(vwrite, ofd, bp->buf,
1721: count) != count) {
1.209 djm 1722: note_err("%s: %s", np,
1723: strerror(errno));
1724: wrerr = 1;
1.1 deraadt 1725: }
1726: }
1727: count = 0;
1728: cp = bp->buf;
1729: }
1730: }
1.161 djm 1731: unset_nonblock(remin);
1.209 djm 1732: if (count != 0 && !wrerr &&
1.122 avsm 1733: atomicio(vwrite, ofd, bp->buf, count) != count) {
1.209 djm 1734: note_err("%s: %s", np, strerror(errno));
1735: wrerr = 1;
1.1 deraadt 1736: }
1.209 djm 1737: if (!wrerr && (!exists || S_ISREG(stb.st_mode)) &&
1738: ftruncate(ofd, size) != 0)
1739: note_err("%s: truncate: %s", np, strerror(errno));
1.1 deraadt 1740: if (pflag) {
1741: if (exists || omode != mode)
1.116 dtucker 1742: if (fchmod(ofd, omode)) {
1.209 djm 1743: note_err("%s: set mode: %s",
1.63 stevesk 1744: np, strerror(errno));
1.116 dtucker 1745: }
1.1 deraadt 1746: } else {
1747: if (!exists && omode != mode)
1.116 dtucker 1748: if (fchmod(ofd, omode & ~mask)) {
1.209 djm 1749: note_err("%s: set mode: %s",
1.63 stevesk 1750: np, strerror(errno));
1.116 dtucker 1751: }
1.1 deraadt 1752: }
1.209 djm 1753: if (close(ofd) == -1)
1.211 millert 1754: note_err("%s: close: %s", np, strerror(errno));
1.18 markus 1755: (void) response();
1.185 dtucker 1756: if (showprogress)
1757: stop_progress_meter();
1.209 djm 1758: if (setimes && !wrerr) {
1.1 deraadt 1759: setimes = 0;
1.205 deraadt 1760: if (utimes(np, tv) == -1) {
1.209 djm 1761: note_err("%s: set times: %s",
1.63 stevesk 1762: np, strerror(errno));
1.1 deraadt 1763: }
1764: }
1.209 djm 1765: /* If no error was noted then signal success for this file */
1766: if (note_err(NULL) == 0)
1.107 deraadt 1767: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 1768: }
1.204 djm 1769: done:
1770: for (n = 0; n < npatterns; n++)
1771: free(patterns[n]);
1772: free(patterns);
1773: return;
1.1 deraadt 1774: screwup:
1.204 djm 1775: for (n = 0; n < npatterns; n++)
1776: free(patterns[n]);
1777: free(patterns);
1.1 deraadt 1778: run_err("protocol error: %s", why);
1779: exit(1);
1780: }
1781:
1782: int
1.86 itojun 1783: response(void)
1.1 deraadt 1784: {
1.186 schwarze 1785: char ch, *cp, resp, rbuf[2048], visbuf[2048];
1.1 deraadt 1786:
1.30 deraadt 1787: if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp))
1.1 deraadt 1788: lostconn(0);
1789:
1790: cp = rbuf;
1.18 markus 1791: switch (resp) {
1792: case 0: /* ok */
1.1 deraadt 1793: return (0);
1794: default:
1795: *cp++ = resp;
1796: /* FALLTHROUGH */
1.18 markus 1797: case 1: /* error, followed by error msg */
1798: case 2: /* fatal error, "" */
1.1 deraadt 1799: do {
1.30 deraadt 1800: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 1801: lostconn(0);
1802: *cp++ = ch;
1803: } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n');
1804:
1.186 schwarze 1805: if (!iamremote) {
1806: cp[-1] = '\0';
1807: (void) snmprintf(visbuf, sizeof(visbuf),
1808: NULL, "%s\n", rbuf);
1809: (void) atomicio(vwrite, STDERR_FILENO,
1810: visbuf, strlen(visbuf));
1811: }
1.1 deraadt 1812: ++errs;
1813: if (resp == 1)
1814: return (-1);
1815: exit(1);
1816: }
1817: /* NOTREACHED */
1818: }
1819:
1820: void
1.86 itojun 1821: usage(void)
1.1 deraadt 1822: {
1.83 stevesk 1823: (void) fprintf(stderr,
1.216 ! djm 1824: "usage: scp [-346ABCpqrTv] [-c cipher] [-D sftp_server_path] [-F ssh_config]\n"
! 1825: " [-i identity_file] [-J destination] [-l limit] [-M scp|sftp]\n"
! 1826: " [-o ssh_option] [-P port] [-S program] source ... target\n");
1.1 deraadt 1827: exit(1);
1828: }
1829:
1830: void
1.18 markus 1831: run_err(const char *fmt,...)
1.1 deraadt 1832: {
1833: static FILE *fp;
1834: va_list ap;
1835:
1836: ++errs;
1.136 biorn 1837: if (fp != NULL || (remout != -1 && (fp = fdopen(remout, "w")))) {
1838: (void) fprintf(fp, "%c", 0x01);
1839: (void) fprintf(fp, "scp: ");
1840: va_start(ap, fmt);
1841: (void) vfprintf(fp, fmt, ap);
1842: va_end(ap);
1843: (void) fprintf(fp, "\n");
1844: (void) fflush(fp);
1845: }
1.18 markus 1846:
1847: if (!iamremote) {
1.73 markus 1848: va_start(ap, fmt);
1.186 schwarze 1849: vfmprintf(stderr, fmt, ap);
1.73 markus 1850: va_end(ap);
1.18 markus 1851: fprintf(stderr, "\n");
1852: }
1.209 djm 1853: }
1854:
1855: /*
1856: * Notes a sink error for sending at the end of a file transfer. Returns 0 if
1857: * no error has been noted or -1 otherwise. Use note_err(NULL) to flush
1858: * any active error at the end of the transfer.
1859: */
1860: int
1861: note_err(const char *fmt, ...)
1862: {
1863: static char *emsg;
1864: va_list ap;
1865:
1866: /* Replay any previously-noted error */
1867: if (fmt == NULL) {
1868: if (emsg == NULL)
1869: return 0;
1870: run_err("%s", emsg);
1871: free(emsg);
1872: emsg = NULL;
1873: return -1;
1874: }
1875:
1876: errs++;
1877: /* Prefer first-noted error */
1878: if (emsg != NULL)
1879: return -1;
1880:
1881: va_start(ap, fmt);
1882: vasnmprintf(&emsg, INT_MAX, NULL, fmt, ap);
1883: va_end(ap);
1884: return -1;
1.1 deraadt 1885: }
1886:
1887: void
1.104 djm 1888: verifydir(char *cp)
1.1 deraadt 1889: {
1890: struct stat stb;
1891:
1892: if (!stat(cp, &stb)) {
1893: if (S_ISDIR(stb.st_mode))
1894: return;
1895: errno = ENOTDIR;
1896: }
1897: run_err("%s: %s", cp, strerror(errno));
1.123 avsm 1898: killchild(0);
1.1 deraadt 1899: }
1900:
1901: int
1.104 djm 1902: okname(char *cp0)
1.1 deraadt 1903: {
1904: int c;
1905: char *cp;
1906:
1907: cp = cp0;
1908: do {
1.75 deraadt 1909: c = (int)*cp;
1.1 deraadt 1910: if (c & 0200)
1911: goto bad;
1.179 deraadt 1912: if (!isalpha(c) && !isdigit((unsigned char)c)) {
1.101 markus 1913: switch (c) {
1914: case '\'':
1915: case '"':
1916: case '`':
1917: case ' ':
1918: case '#':
1919: goto bad;
1920: default:
1921: break;
1922: }
1923: }
1.1 deraadt 1924: } while (*++cp);
1925: return (1);
1926:
1.186 schwarze 1927: bad: fmprintf(stderr, "%s: invalid user name\n", cp0);
1.1 deraadt 1928: return (0);
1929: }
1930:
1931: BUF *
1.104 djm 1932: allocbuf(BUF *bp, int fd, int blksize)
1.1 deraadt 1933: {
1934: size_t size;
1935: struct stat stb;
1936:
1.205 deraadt 1937: if (fstat(fd, &stb) == -1) {
1.1 deraadt 1938: run_err("fstat: %s", strerror(errno));
1939: return (0);
1940: }
1.187 deraadt 1941: size = ROUNDUP(stb.st_blksize, blksize);
1.95 markus 1942: if (size == 0)
1.18 markus 1943: size = blksize;
1.1 deraadt 1944: if (bp->cnt >= size)
1945: return (bp);
1.192 deraadt 1946: bp->buf = xrecallocarray(bp->buf, bp->cnt, size, 1);
1.1 deraadt 1947: bp->cnt = size;
1948: return (bp);
1949: }
1950:
1951: void
1.104 djm 1952: lostconn(int signo)
1.1 deraadt 1953: {
1954: if (!iamremote)
1.172 dtucker 1955: (void)write(STDERR_FILENO, "lost connection\n", 16);
1.74 markus 1956: if (signo)
1957: _exit(1);
1958: else
1959: exit(1);
1.4 aaron 1960: }
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