Annotation of src/usr.bin/ssh/scp.c, Revision 1.218
1.218 ! djm 1: /* $OpenBSD: scp.c,v 1.217 2021/08/04 01:34:55 dtucker 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:
1.218 ! djm 426: log_init(argv0, log_level, SYSLOG_FACILITY_USER, 1);
! 427:
1.129 djm 428: memset(&args, '\0', sizeof(args));
1.168 djm 429: memset(&remote_remote_args, '\0', sizeof(remote_remote_args));
430: args.list = remote_remote_args.list = NULL;
1.129 djm 431: addargs(&args, "%s", ssh_program);
1.70 mouring 432: addargs(&args, "-x");
1.168 djm 433: addargs(&args, "-oPermitLocalCommand=no");
434: addargs(&args, "-oClearAllForwardings=yes");
1.195 djm 435: addargs(&args, "-oRemoteCommand=none");
436: addargs(&args, "-oRequestTTY=no");
1.41 markus 437:
1.202 djm 438: fflag = Tflag = tflag = 0;
439: while ((ch = getopt(argc, argv,
1.216 djm 440: "12346ABCTdfpqrtvD:F:J:M:P:S:c:i:l:o:")) != -1) {
1.18 markus 441: switch (ch) {
442: /* User-visible flags. */
1.100 markus 443: case '1':
1.190 djm 444: fatal("SSH protocol v.1 is no longer supported");
445: break;
1.100 markus 446: case '2':
1.190 djm 447: /* Ignored */
448: break;
1.212 djm 449: case 'A':
1.23 markus 450: case '4':
1.41 markus 451: case '6':
452: case 'C':
1.70 mouring 453: addargs(&args, "-%c", ch);
1.168 djm 454: addargs(&remote_remote_args, "-%c", ch);
1.41 markus 455: break;
1.216 djm 456: case 'D':
457: sftp_direct = optarg;
458: break;
1.169 markus 459: case '3':
460: throughlocal = 1;
461: break;
1.41 markus 462: case 'o':
463: case 'c':
464: case 'i':
1.83 stevesk 465: case 'F':
1.199 tb 466: case 'J':
1.168 djm 467: addargs(&remote_remote_args, "-%c", ch);
468: addargs(&remote_remote_args, "%s", optarg);
1.165 guenther 469: addargs(&args, "-%c", ch);
470: addargs(&args, "%s", optarg);
1.23 markus 471: break;
1.41 markus 472: case 'P':
1.193 millert 473: sshport = a2port(optarg);
474: if (sshport <= 0)
475: fatal("bad port \"%s\"\n", optarg);
1.41 markus 476: break;
477: case 'B':
1.168 djm 478: addargs(&remote_remote_args, "-oBatchmode=yes");
479: addargs(&args, "-oBatchmode=yes");
1.23 markus 480: break;
1.216 djm 481: case 'M':
482: if (strcmp(optarg, "sftp") == 0)
483: mode = MODE_SFTP;
484: else if (strcmp(optarg, "scp") == 0)
485: mode = MODE_SCP;
486: else
487: usage();
488: break;
1.99 markus 489: case 'l':
1.167 djm 490: limit_kbps = strtonum(optarg, 1, 100 * 1024 * 1024,
491: &errstr);
492: if (errstr != NULL)
1.99 markus 493: usage();
1.167 djm 494: limit_kbps *= 1024; /* kbps */
495: bandwidth_limit_init(&bwlimit, limit_kbps, COPY_BUFLEN);
1.99 markus 496: break;
1.1 deraadt 497: case 'p':
498: pflag = 1;
499: break;
500: case 'r':
501: iamrecursive = 1;
502: break;
1.34 deraadt 503: case 'S':
1.41 markus 504: ssh_program = xstrdup(optarg);
505: break;
506: case 'v':
1.72 markus 507: addargs(&args, "-v");
1.168 djm 508: addargs(&remote_remote_args, "-v");
1.216 djm 509: if (verbose_mode == 0)
510: log_level = SYSLOG_LEVEL_DEBUG1;
511: else if (log_level < SYSLOG_LEVEL_DEBUG3)
512: log_level++;
1.41 markus 513: verbose_mode = 1;
514: break;
515: case 'q':
1.111 dtucker 516: addargs(&args, "-q");
1.168 djm 517: addargs(&remote_remote_args, "-q");
1.41 markus 518: showprogress = 0;
1.34 deraadt 519: break;
520:
1.18 markus 521: /* Server options. */
1.1 deraadt 522: case 'd':
523: targetshouldbedirectory = 1;
524: break;
1.18 markus 525: case 'f': /* "from" */
1.1 deraadt 526: iamremote = 1;
527: fflag = 1;
528: break;
1.18 markus 529: case 't': /* "to" */
1.1 deraadt 530: iamremote = 1;
531: tflag = 1;
532: break;
1.202 djm 533: case 'T':
534: Tflag = 1;
535: break;
1.1 deraadt 536: default:
537: usage();
538: }
1.202 djm 539: }
1.1 deraadt 540: argc -= optind;
541: argv += optind;
542:
1.216 djm 543: log_init(argv0, log_level, SYSLOG_FACILITY_USER, 1);
544:
1.212 djm 545: /* Do this last because we want the user to be able to override it */
546: addargs(&args, "-oForwardAgent=no");
547:
1.218 ! djm 548: if (iamremote)
! 549: mode = MODE_SCP;
1.216 djm 550:
1.1 deraadt 551: if ((pwd = getpwuid(userid = getuid())) == NULL)
1.108 deraadt 552: fatal("unknown user %u", (u_int) userid);
1.1 deraadt 553:
1.156 djm 554: if (!isatty(STDOUT_FILENO))
1.7 deraadt 555: showprogress = 0;
1.184 deraadt 556:
557: if (pflag) {
558: /* Cannot pledge: -p allows setuid/setgid files... */
559: } else {
560: if (pledge("stdio rpath wpath cpath fattr tty proc exec",
561: NULL) == -1) {
562: perror("pledge");
563: exit(1);
564: }
565: }
1.7 deraadt 566:
1.1 deraadt 567: remin = STDIN_FILENO;
568: remout = STDOUT_FILENO;
569:
1.52 stevesk 570: if (fflag) {
1.18 markus 571: /* Follow "protocol", send data. */
572: (void) response();
1.1 deraadt 573: source(argc, argv);
574: exit(errs != 0);
575: }
1.18 markus 576: if (tflag) {
577: /* Receive data. */
1.202 djm 578: sink(argc, argv, NULL);
1.1 deraadt 579: exit(errs != 0);
580: }
581: if (argc < 2)
582: usage();
583: if (argc > 2)
584: targetshouldbedirectory = 1;
585:
586: remin = remout = -1;
1.92 markus 587: do_cmd_pid = -1;
1.1 deraadt 588: /* Command to be executed on remote system using "ssh". */
1.55 deraadt 589: (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s",
590: verbose_mode ? " -v" : "",
1.35 deraadt 591: iamrecursive ? " -r" : "", pflag ? " -p" : "",
592: targetshouldbedirectory ? " -d" : "");
1.1 deraadt 593:
1.207 dtucker 594: (void) ssh_signal(SIGPIPE, lostconn);
1.1 deraadt 595:
1.193 millert 596: if (colon(argv[argc - 1])) /* Dest is remote host. */
1.216 djm 597: toremote(argc, argv, mode, sftp_direct);
1.1 deraadt 598: else {
599: if (targetshouldbedirectory)
600: verifydir(argv[argc - 1]);
1.216 djm 601: tolocal(argc, argv, mode, sftp_direct); /* Dest is local host. */
1.92 markus 602: }
603: /*
604: * Finally check the exit status of the ssh process, if one was forked
1.164 stevesk 605: * and no error has occurred yet
1.92 markus 606: */
607: if (do_cmd_pid != -1 && errs == 0) {
608: if (remin != -1)
609: (void) close(remin);
610: if (remout != -1)
611: (void) close(remout);
612: if (waitpid(do_cmd_pid, &status, 0) == -1)
613: errs = 1;
614: else {
615: if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
616: errs = 1;
617: }
1.1 deraadt 618: }
619: exit(errs != 0);
620: }
621:
1.167 djm 622: /* Callback from atomicio6 to update progress meter and limit bandwidth */
623: static int
624: scpio(void *_cnt, size_t s)
1.161 djm 625: {
1.167 djm 626: off_t *cnt = (off_t *)_cnt;
627:
628: *cnt += s;
1.201 dtucker 629: refresh_progress_meter(0);
1.167 djm 630: if (limit_kbps > 0)
631: bandwidth_limit(&bwlimit, s);
632: return 0;
1.161 djm 633: }
634:
1.176 guenther 635: static int
636: do_times(int fd, int verb, const struct stat *sb)
637: {
638: /* strlen(2^64) == 20; strlen(10^6) == 7 */
639: char buf[(20 + 7 + 2) * 2 + 2];
640:
641: (void)snprintf(buf, sizeof(buf), "T%llu 0 %llu 0\n",
642: (unsigned long long) (sb->st_mtime < 0 ? 0 : sb->st_mtime),
643: (unsigned long long) (sb->st_atime < 0 ? 0 : sb->st_atime));
644: if (verb) {
645: fprintf(stderr, "File mtime %lld atime %lld\n",
646: (long long)sb->st_mtime, (long long)sb->st_atime);
647: fprintf(stderr, "Sending file timestamps: %s", buf);
648: }
649: (void) atomicio(vwrite, fd, buf, strlen(buf));
650: return (response());
651: }
652:
1.194 millert 653: static int
654: parse_scp_uri(const char *uri, char **userp, char **hostp, int *portp,
1.214 djm 655: char **pathp)
1.194 millert 656: {
657: int r;
658:
659: r = parse_uri("scp", uri, userp, hostp, portp, pathp);
660: if (r == 0 && *pathp == NULL)
661: *pathp = xstrdup(".");
662: return r;
663: }
664:
1.204 djm 665: /* Appends a string to an array; returns 0 on success, -1 on alloc failure */
666: static int
667: append(char *cp, char ***ap, size_t *np)
668: {
669: char **tmp;
670:
671: if ((tmp = reallocarray(*ap, *np + 1, sizeof(*tmp))) == NULL)
672: return -1;
673: tmp[(*np)] = cp;
674: (*np)++;
675: *ap = tmp;
676: return 0;
677: }
678:
679: /*
680: * Finds the start and end of the first brace pair in the pattern.
681: * returns 0 on success or -1 for invalid patterns.
682: */
683: static int
684: find_brace(const char *pattern, int *startp, int *endp)
685: {
686: int i;
687: int in_bracket, brace_level;
688:
689: *startp = *endp = -1;
690: in_bracket = brace_level = 0;
691: for (i = 0; i < INT_MAX && *endp < 0 && pattern[i] != '\0'; i++) {
692: switch (pattern[i]) {
693: case '\\':
694: /* skip next character */
695: if (pattern[i + 1] != '\0')
696: i++;
697: break;
698: case '[':
699: in_bracket = 1;
700: break;
701: case ']':
702: in_bracket = 0;
703: break;
704: case '{':
705: if (in_bracket)
706: break;
707: if (pattern[i + 1] == '}') {
708: /* Protect a single {}, for find(1), like csh */
709: i++; /* skip */
710: break;
711: }
712: if (*startp == -1)
713: *startp = i;
714: brace_level++;
715: break;
716: case '}':
717: if (in_bracket)
718: break;
719: if (*startp < 0) {
720: /* Unbalanced brace */
721: return -1;
722: }
723: if (--brace_level <= 0)
724: *endp = i;
725: break;
726: }
727: }
728: /* unbalanced brackets/braces */
729: if (*endp < 0 && (*startp >= 0 || in_bracket))
730: return -1;
731: return 0;
732: }
733:
734: /*
735: * Assembles and records a successfully-expanded pattern, returns -1 on
736: * alloc failure.
737: */
738: static int
739: emit_expansion(const char *pattern, int brace_start, int brace_end,
740: int sel_start, int sel_end, char ***patternsp, size_t *npatternsp)
741: {
742: char *cp;
743: int o = 0, tail_len = strlen(pattern + brace_end + 1);
744:
745: if ((cp = malloc(brace_start + (sel_end - sel_start) +
746: tail_len + 1)) == NULL)
747: return -1;
748:
749: /* Pattern before initial brace */
750: if (brace_start > 0) {
751: memcpy(cp, pattern, brace_start);
752: o = brace_start;
753: }
754: /* Current braced selection */
755: if (sel_end - sel_start > 0) {
756: memcpy(cp + o, pattern + sel_start,
757: sel_end - sel_start);
758: o += sel_end - sel_start;
759: }
760: /* Remainder of pattern after closing brace */
761: if (tail_len > 0) {
762: memcpy(cp + o, pattern + brace_end + 1, tail_len);
763: o += tail_len;
764: }
765: cp[o] = '\0';
766: if (append(cp, patternsp, npatternsp) != 0) {
767: free(cp);
768: return -1;
769: }
770: return 0;
771: }
772:
773: /*
774: * Expand the first encountered brace in pattern, appending the expanded
775: * patterns it yielded to the *patternsp array.
776: *
777: * Returns 0 on success or -1 on allocation failure.
778: *
779: * Signals whether expansion was performed via *expanded and whether
780: * pattern was invalid via *invalid.
781: */
782: static int
783: brace_expand_one(const char *pattern, char ***patternsp, size_t *npatternsp,
784: int *expanded, int *invalid)
785: {
786: int i;
787: int in_bracket, brace_start, brace_end, brace_level;
788: int sel_start, sel_end;
789:
790: *invalid = *expanded = 0;
791:
792: if (find_brace(pattern, &brace_start, &brace_end) != 0) {
793: *invalid = 1;
794: return 0;
795: } else if (brace_start == -1)
796: return 0;
797:
798: in_bracket = brace_level = 0;
799: for (i = sel_start = brace_start + 1; i < brace_end; i++) {
800: switch (pattern[i]) {
801: case '{':
802: if (in_bracket)
803: break;
804: brace_level++;
805: break;
806: case '}':
807: if (in_bracket)
808: break;
809: brace_level--;
810: break;
811: case '[':
812: in_bracket = 1;
813: break;
814: case ']':
815: in_bracket = 0;
816: break;
817: case '\\':
818: if (i < brace_end - 1)
819: i++; /* skip */
820: break;
821: }
822: if (pattern[i] == ',' || i == brace_end - 1) {
823: if (in_bracket || brace_level > 0)
824: continue;
825: /* End of a selection, emit an expanded pattern */
826:
827: /* Adjust end index for last selection */
828: sel_end = (i == brace_end - 1) ? brace_end : i;
829: if (emit_expansion(pattern, brace_start, brace_end,
830: sel_start, sel_end, patternsp, npatternsp) != 0)
831: return -1;
832: /* move on to the next selection */
833: sel_start = i + 1;
834: continue;
835: }
836: }
837: if (in_bracket || brace_level > 0) {
838: *invalid = 1;
839: return 0;
840: }
841: /* success */
842: *expanded = 1;
843: return 0;
844: }
845:
846: /* Expand braces from pattern. Returns 0 on success, -1 on failure */
847: static int
848: brace_expand(const char *pattern, char ***patternsp, size_t *npatternsp)
849: {
850: char *cp, *cp2, **active = NULL, **done = NULL;
851: size_t i, nactive = 0, ndone = 0;
852: int ret = -1, invalid = 0, expanded = 0;
853:
854: *patternsp = NULL;
855: *npatternsp = 0;
856:
857: /* Start the worklist with the original pattern */
858: if ((cp = strdup(pattern)) == NULL)
859: return -1;
860: if (append(cp, &active, &nactive) != 0) {
861: free(cp);
862: return -1;
863: }
864: while (nactive > 0) {
865: cp = active[nactive - 1];
866: nactive--;
867: if (brace_expand_one(cp, &active, &nactive,
868: &expanded, &invalid) == -1) {
869: free(cp);
870: goto fail;
871: }
872: if (invalid)
1.213 djm 873: fatal_f("invalid brace pattern \"%s\"", cp);
1.204 djm 874: if (expanded) {
875: /*
876: * Current entry expanded to new entries on the
877: * active list; discard the progenitor pattern.
878: */
879: free(cp);
880: continue;
881: }
882: /*
883: * Pattern did not expand; append the finename component to
884: * the completed list
885: */
886: if ((cp2 = strrchr(cp, '/')) != NULL)
887: *cp2++ = '\0';
888: else
889: cp2 = cp;
890: if (append(xstrdup(cp2), &done, &ndone) != 0) {
891: free(cp);
892: goto fail;
893: }
894: free(cp);
895: }
896: /* success */
897: *patternsp = done;
898: *npatternsp = ndone;
899: done = NULL;
900: ndone = 0;
901: ret = 0;
902: fail:
903: for (i = 0; i < nactive; i++)
904: free(active[i]);
905: free(active);
906: for (i = 0; i < ndone; i++)
907: free(done[i]);
908: free(done);
909: return ret;
910: }
911:
1.216 djm 912: static struct sftp_conn *
913: do_sftp_connect(char *host, char *user, int port, char *sftp_direct)
914: {
915: if (sftp_direct == NULL) {
916: addargs(&args, "-s");
917: if (do_cmd(ssh_program, host, user, port, "sftp",
918: &remin, &remout) < 0)
919: return NULL;
920:
921: } else {
922: args.list = NULL;
923: addargs(&args, "sftp-server");
924: if (do_cmd(sftp_direct, host, NULL, -1, "sftp",
925: &remin, &remout) < 0)
926: return NULL;
927: }
928: return do_init(remin, remout, 32768, 64, limit_kbps);
929: }
930:
1.1 deraadt 931: void
1.216 djm 932: toremote(int argc, char **argv, enum scp_mode_e mode, char *sftp_direct)
1.1 deraadt 933: {
1.193 millert 934: char *suser = NULL, *host = NULL, *src = NULL;
935: char *bp, *tuser, *thost, *targ;
1.216 djm 936: char *remote_path = NULL;
1.193 millert 937: int sport = -1, tport = -1;
1.216 djm 938: struct sftp_conn *conn = NULL;
1.129 djm 939: arglist alist;
1.193 millert 940: int i, r;
1.168 djm 941: u_int j;
1.129 djm 942:
943: memset(&alist, '\0', sizeof(alist));
944: alist.list = NULL;
1.1 deraadt 945:
1.193 millert 946: /* Parse target */
1.194 millert 947: r = parse_scp_uri(argv[argc - 1], &tuser, &thost, &tport, &targ);
948: if (r == -1) {
949: fmprintf(stderr, "%s: invalid uri\n", argv[argc - 1]);
950: ++errs;
951: goto out;
952: }
1.193 millert 953: if (r != 0) {
954: if (parse_user_host_path(argv[argc - 1], &tuser, &thost,
1.194 millert 955: &targ) == -1) {
956: fmprintf(stderr, "%s: invalid target\n", argv[argc - 1]);
957: ++errs;
1.193 millert 958: goto out;
1.194 millert 959: }
1.129 djm 960: }
961:
1.193 millert 962: /* Parse source files */
1.1 deraadt 963: for (i = 0; i < argc - 1; i++) {
1.193 millert 964: free(suser);
965: free(host);
966: free(src);
1.194 millert 967: r = parse_scp_uri(argv[i], &suser, &host, &sport, &src);
968: if (r == -1) {
969: fmprintf(stderr, "%s: invalid uri\n", argv[i]);
970: ++errs;
971: continue;
972: }
973: if (r != 0) {
1.193 millert 974: parse_user_host_path(argv[i], &suser, &host, &src);
1.194 millert 975: }
1.193 millert 976: if (suser != NULL && !okname(suser)) {
977: ++errs;
978: continue;
979: }
980: if (host && throughlocal) { /* extended remote to remote */
1.218 ! djm 981: /* XXX uses scp; need to support SFTP remote-remote */
1.171 djm 982: xasprintf(&bp, "%s -f %s%s", cmd,
983: *src == '-' ? "-- " : "", src);
1.216 djm 984: if (do_cmd(ssh_program, host, suser, sport, bp,
985: &remin, &remout) < 0)
1.169 markus 986: exit(1);
1.173 djm 987: free(bp);
1.171 djm 988: xasprintf(&bp, "%s -t %s%s", cmd,
989: *targ == '-' ? "-- " : "", targ);
1.193 millert 990: if (do_cmd2(thost, tuser, tport, bp, remin, remout) < 0)
1.169 markus 991: exit(1);
1.173 djm 992: free(bp);
1.169 markus 993: (void) close(remin);
994: (void) close(remout);
995: remin = remout = -1;
1.193 millert 996: } else if (host) { /* standard remote to remote */
1.215 djm 997: /*
998: * Second remote user is passed to first remote side
999: * via scp command-line. Ensure it contains no obvious
1000: * shell characters.
1001: */
1002: if (tuser != NULL && !okname(tuser)) {
1003: ++errs;
1004: continue;
1005: }
1.193 millert 1006: if (tport != -1 && tport != SSH_DEFAULT_PORT) {
1007: /* This would require the remote support URIs */
1008: fatal("target port not supported with two "
1009: "remote hosts without the -3 option");
1010: }
1011:
1.129 djm 1012: freeargs(&alist);
1013: addargs(&alist, "%s", ssh_program);
1014: addargs(&alist, "-x");
1.168 djm 1015: addargs(&alist, "-oClearAllForwardings=yes");
1.129 djm 1016: addargs(&alist, "-n");
1.168 djm 1017: for (j = 0; j < remote_remote_args.num; j++) {
1018: addargs(&alist, "%s",
1019: remote_remote_args.list[j]);
1020: }
1.193 millert 1021:
1022: if (sport != -1) {
1023: addargs(&alist, "-p");
1024: addargs(&alist, "%d", sport);
1025: }
1026: if (suser) {
1.129 djm 1027: addargs(&alist, "-l");
1028: addargs(&alist, "%s", suser);
1.23 markus 1029: }
1.165 guenther 1030: addargs(&alist, "--");
1.129 djm 1031: addargs(&alist, "%s", host);
1032: addargs(&alist, "%s", cmd);
1033: addargs(&alist, "%s", src);
1034: addargs(&alist, "%s%s%s:%s",
1035: tuser ? tuser : "", tuser ? "@" : "",
1036: thost, targ);
1037: if (do_local_cmd(&alist) != 0)
1.109 markus 1038: errs = 1;
1.18 markus 1039: } else { /* local to remote */
1.216 djm 1040: if (mode == MODE_SFTP) {
1041: if (remin == -1) {
1042: /* Connect to remote now */
1043: conn = do_sftp_connect(thost, tuser,
1044: tport, sftp_direct);
1045: if (conn == NULL) {
1046: fatal("Unable to open sftp "
1047: "connection");
1048: }
1049: }
1050:
1051: /* The protocol */
1052: source_sftp(1, argv[i], targ, conn,
1053: &remote_path);
1054: continue;
1055: }
1056: /* SCP */
1.1 deraadt 1057: if (remin == -1) {
1.171 djm 1058: xasprintf(&bp, "%s -t %s%s", cmd,
1059: *targ == '-' ? "-- " : "", targ);
1.216 djm 1060: if (do_cmd(ssh_program, thost, tuser, tport, bp,
1061: &remin, &remout) < 0)
1.18 markus 1062: exit(1);
1.1 deraadt 1063: if (response() < 0)
1064: exit(1);
1.173 djm 1065: free(bp);
1.1 deraadt 1066: }
1.18 markus 1067: source(1, argv + i);
1.1 deraadt 1068: }
1069: }
1.193 millert 1070: out:
1.216 djm 1071: if (mode == MODE_SFTP) {
1072: free(remote_path);
1073: free(conn);
1074: }
1.193 millert 1075: free(tuser);
1076: free(thost);
1077: free(targ);
1078: free(suser);
1079: free(host);
1080: free(src);
1.1 deraadt 1081: }
1082:
1083: void
1.216 djm 1084: tolocal(int argc, char **argv, enum scp_mode_e mode, char *sftp_direct)
1.1 deraadt 1085: {
1.193 millert 1086: char *bp, *host = NULL, *src = NULL, *suser = NULL;
1.129 djm 1087: arglist alist;
1.216 djm 1088: struct sftp_conn *conn = NULL;
1.193 millert 1089: int i, r, sport = -1;
1.129 djm 1090:
1091: memset(&alist, '\0', sizeof(alist));
1092: alist.list = NULL;
1.1 deraadt 1093:
1094: for (i = 0; i < argc - 1; i++) {
1.193 millert 1095: free(suser);
1096: free(host);
1097: free(src);
1.194 millert 1098: r = parse_scp_uri(argv[i], &suser, &host, &sport, &src);
1.193 millert 1099: if (r == -1) {
1.194 millert 1100: fmprintf(stderr, "%s: invalid uri\n", argv[i]);
1.193 millert 1101: ++errs;
1102: continue;
1103: }
1104: if (r != 0)
1105: parse_user_host_path(argv[i], &suser, &host, &src);
1106: if (suser != NULL && !okname(suser)) {
1107: ++errs;
1108: continue;
1109: }
1110: if (!host) { /* Local to local. */
1.129 djm 1111: freeargs(&alist);
1112: addargs(&alist, "%s", _PATH_CP);
1113: if (iamrecursive)
1114: addargs(&alist, "-r");
1115: if (pflag)
1116: addargs(&alist, "-p");
1.165 guenther 1117: addargs(&alist, "--");
1.129 djm 1118: addargs(&alist, "%s", argv[i]);
1119: addargs(&alist, "%s", argv[argc-1]);
1120: if (do_local_cmd(&alist))
1.1 deraadt 1121: ++errs;
1122: continue;
1123: }
1.193 millert 1124: /* Remote to local. */
1.216 djm 1125: if (mode == MODE_SFTP) {
1126: conn = do_sftp_connect(host, suser, sport, sftp_direct);
1127: if (conn == NULL) {
1128: error("Couldn't make sftp connection "
1129: "to server");
1130: ++errs;
1131: continue;
1132: }
1133:
1134: /* The protocol */
1135: sink_sftp(1, argv[argc - 1], src, conn);
1136:
1137: free(conn);
1138: (void) close(remin);
1139: (void) close(remout);
1140: remin = remout = -1;
1141: continue;
1142: }
1143: /* SCP */
1.171 djm 1144: xasprintf(&bp, "%s -f %s%s",
1145: cmd, *src == '-' ? "-- " : "", src);
1.216 djm 1146: if (do_cmd(ssh_program, host, suser, sport, bp, &remin,
1147: &remout) < 0) {
1.173 djm 1148: free(bp);
1.18 markus 1149: ++errs;
1150: continue;
1.1 deraadt 1151: }
1.173 djm 1152: free(bp);
1.202 djm 1153: sink(1, argv + argc - 1, src);
1.18 markus 1154: (void) close(remin);
1.1 deraadt 1155: remin = remout = -1;
1156: }
1.193 millert 1157: free(suser);
1158: free(host);
1159: free(src);
1.1 deraadt 1160: }
1161:
1162: void
1.216 djm 1163: source_sftp(int argc, char *src, char *targ,
1164: struct sftp_conn *conn, char **remote_path)
1165: {
1166: char *target = NULL, *filename = NULL, *abs_dst = NULL;
1167: int target_is_dir;
1168:
1169: if (*remote_path == NULL) {
1170: *remote_path = do_realpath(conn, ".");
1171: if (*remote_path == NULL)
1172: fatal("Unable to determine remote working directory");
1173: }
1174:
1175: if ((filename = basename(src)) == NULL)
1176: fatal("basename %s: %s", src, strerror(errno));
1177:
1178: /*
1179: * No need to glob here - the local shell already took care of
1180: * the expansions
1181: */
1182: target = xstrdup(targ);
1183: target = make_absolute(target, *remote_path);
1184: target_is_dir = remote_is_dir(conn, target);
1185: if (targetshouldbedirectory && !target_is_dir) {
1186: fatal("Target is not a directory, but more files selected "
1187: "for upload");
1188: }
1189: if (target_is_dir)
1190: abs_dst = path_append(target, filename);
1191: else {
1192: abs_dst = target;
1193: target = NULL;
1194: }
1195: debug3_f("copying local %s to remote %s", src, abs_dst);
1196:
1197: if (local_is_dir(src) && iamrecursive) {
1198: if (upload_dir(conn, src, abs_dst, pflag, 1, 0, 0) != 0) {
1199: fatal("failed to upload directory %s to %s",
1200: src, abs_dst);
1201: }
1202: } else if (do_upload(conn, src, abs_dst, pflag, 0, 0) != 0)
1203: fatal("failed to upload file %s to %s", src, abs_dst);
1204:
1205: free(abs_dst);
1206: free(target);
1207: }
1208:
1209: void
1.104 djm 1210: source(int argc, char **argv)
1.1 deraadt 1211: {
1212: struct stat stb;
1213: static BUF buffer;
1214: BUF *bp;
1.163 dtucker 1215: off_t i, statbytes;
1.180 djm 1216: size_t amt, nr;
1.125 dtucker 1217: int fd = -1, haderr, indx;
1.206 dtucker 1218: char *last, *name, buf[PATH_MAX + 128], encname[PATH_MAX];
1.65 deraadt 1219: int len;
1.1 deraadt 1220:
1221: for (indx = 0; indx < argc; ++indx) {
1.18 markus 1222: name = argv[indx];
1.11 aaron 1223: statbytes = 0;
1.65 deraadt 1224: len = strlen(name);
1225: while (len > 1 && name[len-1] == '/')
1226: name[--len] = '\0';
1.205 deraadt 1227: if ((fd = open(name, O_RDONLY|O_NONBLOCK, 0)) == -1)
1.158 dtucker 1228: goto syserr;
1.85 markus 1229: if (strchr(name, '\n') != NULL) {
1.158 dtucker 1230: strnvis(encname, name, sizeof(encname), VIS_NL);
1231: name = encname;
1.85 markus 1232: }
1.205 deraadt 1233: if (fstat(fd, &stb) == -1) {
1.1 deraadt 1234: syserr: run_err("%s: %s", name, strerror(errno));
1235: goto next;
1236: }
1.163 dtucker 1237: if (stb.st_size < 0) {
1238: run_err("%s: %s", name, "Negative file size");
1239: goto next;
1240: }
1.157 djm 1241: unset_nonblock(fd);
1.1 deraadt 1242: switch (stb.st_mode & S_IFMT) {
1243: case S_IFREG:
1244: break;
1245: case S_IFDIR:
1246: if (iamrecursive) {
1247: rsource(name, &stb);
1248: goto next;
1249: }
1250: /* FALLTHROUGH */
1251: default:
1252: run_err("%s: not a regular file", name);
1253: goto next;
1254: }
1255: if ((last = strrchr(name, '/')) == NULL)
1256: last = name;
1257: else
1258: ++last;
1.11 aaron 1259: curfile = last;
1.1 deraadt 1260: if (pflag) {
1.176 guenther 1261: if (do_times(remout, verbose_mode, &stb) < 0)
1.1 deraadt 1262: goto next;
1263: }
1264: #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
1.61 markus 1265: snprintf(buf, sizeof buf, "C%04o %lld %s\n",
1.47 markus 1266: (u_int) (stb.st_mode & FILEMODEMASK),
1.62 markus 1267: (long long)stb.st_size, last);
1.186 schwarze 1268: if (verbose_mode)
1269: fmprintf(stderr, "Sending file modes: %s", buf);
1.107 deraadt 1270: (void) atomicio(vwrite, remout, buf, strlen(buf));
1.1 deraadt 1271: if (response() < 0)
1272: goto next;
1.161 djm 1273: if ((bp = allocbuf(&buffer, fd, COPY_BUFLEN)) == NULL) {
1.127 deraadt 1274: next: if (fd != -1) {
1275: (void) close(fd);
1276: fd = -1;
1277: }
1.1 deraadt 1278: continue;
1279: }
1.97 fgsch 1280: if (showprogress)
1281: start_progress_meter(curfile, stb.st_size, &statbytes);
1.161 djm 1282: set_nonblock(remout);
1.1 deraadt 1283: for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
1284: amt = bp->cnt;
1.163 dtucker 1285: if (i + (off_t)amt > stb.st_size)
1.1 deraadt 1286: amt = stb.st_size - i;
1287: if (!haderr) {
1.180 djm 1288: if ((nr = atomicio(read, fd,
1289: bp->buf, amt)) != amt) {
1.122 avsm 1290: haderr = errno;
1.180 djm 1291: memset(bp->buf + nr, 0, amt - nr);
1292: }
1.1 deraadt 1293: }
1.161 djm 1294: /* Keep writing after error to retain sync */
1295: if (haderr) {
1296: (void)atomicio(vwrite, remout, bp->buf, amt);
1.180 djm 1297: memset(bp->buf, 0, amt);
1.161 djm 1298: continue;
1.1 deraadt 1299: }
1.167 djm 1300: if (atomicio6(vwrite, remout, bp->buf, amt, scpio,
1.161 djm 1301: &statbytes) != amt)
1302: haderr = errno;
1.1 deraadt 1303: }
1.161 djm 1304: unset_nonblock(remout);
1.4 aaron 1305:
1.127 deraadt 1306: if (fd != -1) {
1.205 deraadt 1307: if (close(fd) == -1 && !haderr)
1.127 deraadt 1308: haderr = errno;
1309: fd = -1;
1310: }
1.1 deraadt 1311: if (!haderr)
1.107 deraadt 1312: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 1313: else
1314: run_err("%s: %s", name, strerror(haderr));
1.18 markus 1315: (void) response();
1.185 dtucker 1316: if (showprogress)
1317: stop_progress_meter();
1.1 deraadt 1318: }
1319: }
1320:
1321: void
1.104 djm 1322: rsource(char *name, struct stat *statp)
1.1 deraadt 1323: {
1324: DIR *dirp;
1325: struct dirent *dp;
1.181 deraadt 1326: char *last, *vect[1], path[PATH_MAX];
1.1 deraadt 1327:
1328: if (!(dirp = opendir(name))) {
1329: run_err("%s: %s", name, strerror(errno));
1330: return;
1331: }
1332: last = strrchr(name, '/');
1.183 mmcc 1333: if (last == NULL)
1.1 deraadt 1334: last = name;
1335: else
1336: last++;
1337: if (pflag) {
1.176 guenther 1338: if (do_times(remout, verbose_mode, statp) < 0) {
1.1 deraadt 1339: closedir(dirp);
1340: return;
1341: }
1342: }
1.55 deraadt 1343: (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n",
1.47 markus 1344: (u_int) (statp->st_mode & FILEMODEMASK), 0, last);
1.18 markus 1345: if (verbose_mode)
1.186 schwarze 1346: fmprintf(stderr, "Entering directory: %s", path);
1.107 deraadt 1347: (void) atomicio(vwrite, remout, path, strlen(path));
1.1 deraadt 1348: if (response() < 0) {
1349: closedir(dirp);
1350: return;
1351: }
1.63 stevesk 1352: while ((dp = readdir(dirp)) != NULL) {
1.1 deraadt 1353: if (dp->d_ino == 0)
1354: continue;
1355: if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
1356: continue;
1357: if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) {
1358: run_err("%s/%s: name too long", name, dp->d_name);
1359: continue;
1360: }
1.55 deraadt 1361: (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name);
1.1 deraadt 1362: vect[0] = path;
1363: source(1, vect);
1364: }
1.18 markus 1365: (void) closedir(dirp);
1.107 deraadt 1366: (void) atomicio(vwrite, remout, "E\n", 2);
1.18 markus 1367: (void) response();
1.1 deraadt 1368: }
1369:
1.216 djm 1370: void
1371: sink_sftp(int argc, char *dst, const char *src, struct sftp_conn *conn)
1372: {
1373: char *abs_src = NULL;
1374: char *abs_dst = NULL;
1375: glob_t g;
1376: char *filename, *tmp = NULL, *remote_path = NULL;
1377: int i, r, err = 0;
1378:
1379: /*
1380: * Here, we need remote glob as SFTP can not depend on remote shell
1381: * expansions
1382: */
1383:
1384: remote_path = do_realpath(conn, ".");
1385: if (remote_path == NULL) {
1386: error("Could not obtain remote working directory");
1387: /* TODO - gracefully degrade by using relative paths ? */
1388: err = -1;
1389: goto out;
1390: }
1391:
1392: abs_src = xstrdup(src);
1393: abs_src = make_absolute(abs_src, remote_path);
1394: free(remote_path);
1395: memset(&g, 0, sizeof(g));
1396:
1397: debug3_f("copying remote %s to local %s", abs_src, dst);
1398: if ((r = remote_glob(conn, abs_src, GLOB_MARK, NULL, &g)) != 0) {
1399: if (r == GLOB_NOSPACE)
1400: error("Too many glob matches for \"%s\".", abs_src);
1401: else
1402: error("File \"%s\" not found.", abs_src);
1403: err = -1;
1404: goto out;
1405: }
1406:
1407: if (g.gl_matchc > 1 && !local_is_dir(dst)) {
1408: error("Multiple files match pattern, but destination "
1409: "\"%s\" is not a directory", dst);
1410: err = -1;
1411: goto out;
1412: }
1413:
1414: for (i = 0; g.gl_pathv[i] && !interrupted; i++) {
1415: tmp = xstrdup(g.gl_pathv[i]);
1416: if ((filename = basename(tmp)) == NULL) {
1417: error("basename %s: %s", tmp, strerror(errno));
1418: err = -1;
1419: goto out;
1420: }
1421:
1422: if (local_is_dir(dst))
1423: abs_dst = path_append(dst, filename);
1424: else
1425: abs_dst = xstrdup(dst);
1426:
1427: debug("Fetching %s to %s\n", g.gl_pathv[i], abs_dst);
1428: if (globpath_is_dir(g.gl_pathv[i]) && iamrecursive) {
1429: if (download_dir(conn, g.gl_pathv[i], abs_dst, NULL,
1430: pflag, 1, 0, 0) == -1)
1431: err = -1;
1432: } else {
1433: if (do_download(conn, g.gl_pathv[i], abs_dst, NULL,
1434: pflag, 0, 0) == -1)
1435: err = -1;
1436: }
1437: free(abs_dst);
1438: abs_dst = NULL;
1.217 dtucker 1439: free(tmp);
1440: tmp = NULL;
1.216 djm 1441: }
1442:
1443: out:
1444: free(abs_src);
1.217 dtucker 1445: free(tmp);
1.216 djm 1446: globfree(&g);
1447: if (err == -1) {
1448: fatal("Failed to download file '%s'", src);
1449: }
1450: }
1451:
1452:
1.189 millert 1453: #define TYPE_OVERFLOW(type, val) \
1454: ((sizeof(type) == 4 && (val) > INT32_MAX) || \
1455: (sizeof(type) == 8 && (val) > INT64_MAX) || \
1456: (sizeof(type) != 4 && sizeof(type) != 8))
1457:
1.1 deraadt 1458: void
1.202 djm 1459: sink(int argc, char **argv, const char *src)
1.1 deraadt 1460: {
1461: static BUF buffer;
1462: struct stat stb;
1463: BUF *bp;
1.122 avsm 1464: off_t i;
1.124 djm 1465: size_t j, count;
1.140 deraadt 1466: int amt, exists, first, ofd;
1467: mode_t mode, omode, mask;
1.97 fgsch 1468: off_t size, statbytes;
1.176 guenther 1469: unsigned long long ull;
1.209 djm 1470: int setimes, targisdir, wrerr;
1.186 schwarze 1471: char ch, *cp, *np, *targ, *why, *vect[1], buf[2048], visbuf[2048];
1.204 djm 1472: char **patterns = NULL;
1473: size_t n, npatterns = 0;
1.40 markus 1474: struct timeval tv[2];
1.1 deraadt 1475:
1.66 stevesk 1476: #define atime tv[0]
1477: #define mtime tv[1]
1.118 deraadt 1478: #define SCREWUP(str) { why = str; goto screwup; }
1.1 deraadt 1479:
1.189 millert 1480: if (TYPE_OVERFLOW(time_t, 0) || TYPE_OVERFLOW(off_t, 0))
1481: SCREWUP("Unexpected off_t/time_t size");
1482:
1.1 deraadt 1483: setimes = targisdir = 0;
1484: mask = umask(0);
1485: if (!pflag)
1.18 markus 1486: (void) umask(mask);
1.1 deraadt 1487: if (argc != 1) {
1488: run_err("ambiguous target");
1489: exit(1);
1490: }
1491: targ = *argv;
1492: if (targetshouldbedirectory)
1493: verifydir(targ);
1.18 markus 1494:
1.107 deraadt 1495: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 1496: if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
1497: targisdir = 1;
1.202 djm 1498: if (src != NULL && !iamrecursive && !Tflag) {
1499: /*
1500: * Prepare to try to restrict incoming filenames to match
1501: * the requested destination file glob.
1502: */
1.204 djm 1503: if (brace_expand(src, &patterns, &npatterns) != 0)
1.213 djm 1504: fatal_f("could not expand pattern");
1.202 djm 1505: }
1.1 deraadt 1506: for (first = 1;; first = 0) {
1507: cp = buf;
1.122 avsm 1508: if (atomicio(read, remin, cp, 1) != 1)
1.204 djm 1509: goto done;
1.1 deraadt 1510: if (*cp++ == '\n')
1511: SCREWUP("unexpected <newline>");
1512: do {
1.30 deraadt 1513: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 1514: SCREWUP("lost connection");
1515: *cp++ = ch;
1516: } while (cp < &buf[sizeof(buf) - 1] && ch != '\n');
1517: *cp = 0;
1.114 markus 1518: if (verbose_mode)
1.186 schwarze 1519: fmprintf(stderr, "Sink: %s", buf);
1.1 deraadt 1520:
1521: if (buf[0] == '\01' || buf[0] == '\02') {
1.186 schwarze 1522: if (iamremote == 0) {
1523: (void) snmprintf(visbuf, sizeof(visbuf),
1524: NULL, "%s", buf + 1);
1.107 deraadt 1525: (void) atomicio(vwrite, STDERR_FILENO,
1.186 schwarze 1526: visbuf, strlen(visbuf));
1527: }
1.1 deraadt 1528: if (buf[0] == '\02')
1529: exit(1);
1530: ++errs;
1531: continue;
1532: }
1533: if (buf[0] == 'E') {
1.107 deraadt 1534: (void) atomicio(vwrite, remout, "", 1);
1.204 djm 1535: goto done;
1.1 deraadt 1536: }
1537: if (ch == '\n')
1538: *--cp = 0;
1539:
1540: cp = buf;
1541: if (*cp == 'T') {
1542: setimes++;
1543: cp++;
1.176 guenther 1544: if (!isdigit((unsigned char)*cp))
1545: SCREWUP("mtime.sec not present");
1546: ull = strtoull(cp, &cp, 10);
1.66 stevesk 1547: if (!cp || *cp++ != ' ')
1.1 deraadt 1548: SCREWUP("mtime.sec not delimited");
1.189 millert 1549: if (TYPE_OVERFLOW(time_t, ull))
1.176 guenther 1550: setimes = 0; /* out of range */
1551: mtime.tv_sec = ull;
1.66 stevesk 1552: mtime.tv_usec = strtol(cp, &cp, 10);
1.176 guenther 1553: if (!cp || *cp++ != ' ' || mtime.tv_usec < 0 ||
1554: mtime.tv_usec > 999999)
1.1 deraadt 1555: SCREWUP("mtime.usec not delimited");
1.176 guenther 1556: if (!isdigit((unsigned char)*cp))
1557: SCREWUP("atime.sec not present");
1558: ull = strtoull(cp, &cp, 10);
1.66 stevesk 1559: if (!cp || *cp++ != ' ')
1.1 deraadt 1560: SCREWUP("atime.sec not delimited");
1.189 millert 1561: if (TYPE_OVERFLOW(time_t, ull))
1.176 guenther 1562: setimes = 0; /* out of range */
1563: atime.tv_sec = ull;
1.66 stevesk 1564: atime.tv_usec = strtol(cp, &cp, 10);
1.176 guenther 1565: if (!cp || *cp++ != '\0' || atime.tv_usec < 0 ||
1566: atime.tv_usec > 999999)
1.1 deraadt 1567: SCREWUP("atime.usec not delimited");
1.107 deraadt 1568: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 1569: continue;
1570: }
1571: if (*cp != 'C' && *cp != 'D') {
1572: /*
1573: * Check for the case "rcp remote:foo\* local:bar".
1574: * In this case, the line "No match." can be returned
1575: * by the shell before the rcp command on the remote is
1576: * executed so the ^Aerror_message convention isn't
1577: * followed.
1578: */
1579: if (first) {
1580: run_err("%s", cp);
1581: exit(1);
1582: }
1583: SCREWUP("expected control record");
1584: }
1585: mode = 0;
1586: for (++cp; cp < buf + 5; cp++) {
1587: if (*cp < '0' || *cp > '7')
1588: SCREWUP("bad mode");
1589: mode = (mode << 3) | (*cp - '0');
1590: }
1.197 dtucker 1591: if (!pflag)
1592: mode &= ~mask;
1.1 deraadt 1593: if (*cp++ != ' ')
1594: SCREWUP("mode not delimited");
1595:
1.188 millert 1596: if (!isdigit((unsigned char)*cp))
1597: SCREWUP("size not present");
1598: ull = strtoull(cp, &cp, 10);
1599: if (!cp || *cp++ != ' ')
1.1 deraadt 1600: SCREWUP("size not delimited");
1.189 millert 1601: if (TYPE_OVERFLOW(off_t, ull))
1.188 millert 1602: SCREWUP("size out of range");
1603: size = (off_t)ull;
1604:
1.198 djm 1605: if (*cp == '\0' || strchr(cp, '/') != NULL ||
1606: strcmp(cp, ".") == 0 || strcmp(cp, "..") == 0) {
1.114 markus 1607: run_err("error: unexpected filename: %s", cp);
1608: exit(1);
1609: }
1.204 djm 1610: if (npatterns > 0) {
1611: for (n = 0; n < npatterns; n++) {
1612: if (fnmatch(patterns[n], cp, 0) == 0)
1613: break;
1614: }
1615: if (n >= npatterns)
1616: SCREWUP("filename does not match request");
1617: }
1.1 deraadt 1618: if (targisdir) {
1619: static char *namebuf;
1.124 djm 1620: static size_t cursize;
1.1 deraadt 1621: size_t need;
1622:
1623: need = strlen(targ) + strlen(cp) + 250;
1.55 deraadt 1624: if (need > cursize) {
1.173 djm 1625: free(namebuf);
1.18 markus 1626: namebuf = xmalloc(need);
1.55 deraadt 1627: cursize = need;
1628: }
1629: (void) snprintf(namebuf, need, "%s%s%s", targ,
1.88 mouring 1630: strcmp(targ, "/") ? "/" : "", cp);
1.1 deraadt 1631: np = namebuf;
1632: } else
1633: np = targ;
1.12 aaron 1634: curfile = cp;
1.1 deraadt 1635: exists = stat(np, &stb) == 0;
1636: if (buf[0] == 'D') {
1637: int mod_flag = pflag;
1.114 markus 1638: if (!iamrecursive)
1639: SCREWUP("received directory without -r");
1.1 deraadt 1640: if (exists) {
1641: if (!S_ISDIR(stb.st_mode)) {
1642: errno = ENOTDIR;
1643: goto bad;
1644: }
1645: if (pflag)
1.18 markus 1646: (void) chmod(np, mode);
1.1 deraadt 1647: } else {
1.214 djm 1648: /* Handle copying from a read-only directory */
1.1 deraadt 1649: mod_flag = 1;
1.205 deraadt 1650: if (mkdir(np, mode | S_IRWXU) == -1)
1.1 deraadt 1651: goto bad;
1652: }
1.58 danh 1653: vect[0] = xstrdup(np);
1.202 djm 1654: sink(1, vect, src);
1.1 deraadt 1655: if (setimes) {
1656: setimes = 0;
1.210 djm 1657: (void) utimes(vect[0], tv);
1.1 deraadt 1658: }
1659: if (mod_flag)
1.59 deraadt 1660: (void) chmod(vect[0], mode);
1.173 djm 1661: free(vect[0]);
1.1 deraadt 1662: continue;
1663: }
1664: omode = mode;
1.174 dtucker 1665: mode |= S_IWUSR;
1.205 deraadt 1666: if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) == -1) {
1.1 deraadt 1667: bad: run_err("%s: %s", np, strerror(errno));
1668: continue;
1669: }
1.107 deraadt 1670: (void) atomicio(vwrite, remout, "", 1);
1.161 djm 1671: if ((bp = allocbuf(&buffer, ofd, COPY_BUFLEN)) == NULL) {
1.18 markus 1672: (void) close(ofd);
1.1 deraadt 1673: continue;
1674: }
1675: cp = bp->buf;
1.209 djm 1676: wrerr = 0;
1.7 deraadt 1677:
1.209 djm 1678: /*
1679: * NB. do not use run_err() unless immediately followed by
1680: * exit() below as it may send a spurious reply that might
1681: * desyncronise us from the peer. Use note_err() instead.
1682: */
1.12 aaron 1683: statbytes = 0;
1.97 fgsch 1684: if (showprogress)
1685: start_progress_meter(curfile, size, &statbytes);
1.161 djm 1686: set_nonblock(remin);
1687: for (count = i = 0; i < size; i += bp->cnt) {
1688: amt = bp->cnt;
1.1 deraadt 1689: if (i + amt > size)
1690: amt = size - i;
1691: count += amt;
1692: do {
1.167 djm 1693: j = atomicio6(read, remin, cp, amt,
1694: scpio, &statbytes);
1.122 avsm 1695: if (j == 0) {
1.161 djm 1696: run_err("%s", j != EPIPE ?
1697: strerror(errno) :
1.63 stevesk 1698: "dropped connection");
1.1 deraadt 1699: exit(1);
1700: }
1701: amt -= j;
1702: cp += j;
1703: } while (amt > 0);
1.112 djm 1704:
1.1 deraadt 1705: if (count == bp->cnt) {
1706: /* Keep reading so we stay sync'd up. */
1.209 djm 1707: if (!wrerr) {
1.122 avsm 1708: if (atomicio(vwrite, ofd, bp->buf,
1709: count) != count) {
1.209 djm 1710: note_err("%s: %s", np,
1711: strerror(errno));
1712: wrerr = 1;
1.1 deraadt 1713: }
1714: }
1715: count = 0;
1716: cp = bp->buf;
1717: }
1718: }
1.161 djm 1719: unset_nonblock(remin);
1.209 djm 1720: if (count != 0 && !wrerr &&
1.122 avsm 1721: atomicio(vwrite, ofd, bp->buf, count) != count) {
1.209 djm 1722: note_err("%s: %s", np, strerror(errno));
1723: wrerr = 1;
1.1 deraadt 1724: }
1.209 djm 1725: if (!wrerr && (!exists || S_ISREG(stb.st_mode)) &&
1726: ftruncate(ofd, size) != 0)
1727: note_err("%s: truncate: %s", np, strerror(errno));
1.1 deraadt 1728: if (pflag) {
1729: if (exists || omode != mode)
1.116 dtucker 1730: if (fchmod(ofd, omode)) {
1.209 djm 1731: note_err("%s: set mode: %s",
1.63 stevesk 1732: np, strerror(errno));
1.116 dtucker 1733: }
1.1 deraadt 1734: } else {
1735: if (!exists && omode != mode)
1.116 dtucker 1736: if (fchmod(ofd, omode & ~mask)) {
1.209 djm 1737: note_err("%s: set mode: %s",
1.63 stevesk 1738: np, strerror(errno));
1.116 dtucker 1739: }
1.1 deraadt 1740: }
1.209 djm 1741: if (close(ofd) == -1)
1.211 millert 1742: note_err("%s: close: %s", np, strerror(errno));
1.18 markus 1743: (void) response();
1.185 dtucker 1744: if (showprogress)
1745: stop_progress_meter();
1.209 djm 1746: if (setimes && !wrerr) {
1.1 deraadt 1747: setimes = 0;
1.205 deraadt 1748: if (utimes(np, tv) == -1) {
1.209 djm 1749: note_err("%s: set times: %s",
1.63 stevesk 1750: np, strerror(errno));
1.1 deraadt 1751: }
1752: }
1.209 djm 1753: /* If no error was noted then signal success for this file */
1754: if (note_err(NULL) == 0)
1.107 deraadt 1755: (void) atomicio(vwrite, remout, "", 1);
1.1 deraadt 1756: }
1.204 djm 1757: done:
1758: for (n = 0; n < npatterns; n++)
1759: free(patterns[n]);
1760: free(patterns);
1761: return;
1.1 deraadt 1762: screwup:
1.204 djm 1763: for (n = 0; n < npatterns; n++)
1764: free(patterns[n]);
1765: free(patterns);
1.1 deraadt 1766: run_err("protocol error: %s", why);
1767: exit(1);
1768: }
1769:
1770: int
1.86 itojun 1771: response(void)
1.1 deraadt 1772: {
1.186 schwarze 1773: char ch, *cp, resp, rbuf[2048], visbuf[2048];
1.1 deraadt 1774:
1.30 deraadt 1775: if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp))
1.1 deraadt 1776: lostconn(0);
1777:
1778: cp = rbuf;
1.18 markus 1779: switch (resp) {
1780: case 0: /* ok */
1.1 deraadt 1781: return (0);
1782: default:
1783: *cp++ = resp;
1784: /* FALLTHROUGH */
1.18 markus 1785: case 1: /* error, followed by error msg */
1786: case 2: /* fatal error, "" */
1.1 deraadt 1787: do {
1.30 deraadt 1788: if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
1.1 deraadt 1789: lostconn(0);
1790: *cp++ = ch;
1791: } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n');
1792:
1.186 schwarze 1793: if (!iamremote) {
1794: cp[-1] = '\0';
1795: (void) snmprintf(visbuf, sizeof(visbuf),
1796: NULL, "%s\n", rbuf);
1797: (void) atomicio(vwrite, STDERR_FILENO,
1798: visbuf, strlen(visbuf));
1799: }
1.1 deraadt 1800: ++errs;
1801: if (resp == 1)
1802: return (-1);
1803: exit(1);
1804: }
1805: /* NOTREACHED */
1806: }
1807:
1808: void
1.86 itojun 1809: usage(void)
1.1 deraadt 1810: {
1.83 stevesk 1811: (void) fprintf(stderr,
1.216 djm 1812: "usage: scp [-346ABCpqrTv] [-c cipher] [-D sftp_server_path] [-F ssh_config]\n"
1813: " [-i identity_file] [-J destination] [-l limit] [-M scp|sftp]\n"
1814: " [-o ssh_option] [-P port] [-S program] source ... target\n");
1.1 deraadt 1815: exit(1);
1816: }
1817:
1818: void
1.18 markus 1819: run_err(const char *fmt,...)
1.1 deraadt 1820: {
1821: static FILE *fp;
1822: va_list ap;
1823:
1824: ++errs;
1.136 biorn 1825: if (fp != NULL || (remout != -1 && (fp = fdopen(remout, "w")))) {
1826: (void) fprintf(fp, "%c", 0x01);
1827: (void) fprintf(fp, "scp: ");
1828: va_start(ap, fmt);
1829: (void) vfprintf(fp, fmt, ap);
1830: va_end(ap);
1831: (void) fprintf(fp, "\n");
1832: (void) fflush(fp);
1833: }
1.18 markus 1834:
1835: if (!iamremote) {
1.73 markus 1836: va_start(ap, fmt);
1.186 schwarze 1837: vfmprintf(stderr, fmt, ap);
1.73 markus 1838: va_end(ap);
1.18 markus 1839: fprintf(stderr, "\n");
1840: }
1.209 djm 1841: }
1842:
1843: /*
1844: * Notes a sink error for sending at the end of a file transfer. Returns 0 if
1845: * no error has been noted or -1 otherwise. Use note_err(NULL) to flush
1846: * any active error at the end of the transfer.
1847: */
1848: int
1849: note_err(const char *fmt, ...)
1850: {
1851: static char *emsg;
1852: va_list ap;
1853:
1854: /* Replay any previously-noted error */
1855: if (fmt == NULL) {
1856: if (emsg == NULL)
1857: return 0;
1858: run_err("%s", emsg);
1859: free(emsg);
1860: emsg = NULL;
1861: return -1;
1862: }
1863:
1864: errs++;
1865: /* Prefer first-noted error */
1866: if (emsg != NULL)
1867: return -1;
1868:
1869: va_start(ap, fmt);
1870: vasnmprintf(&emsg, INT_MAX, NULL, fmt, ap);
1871: va_end(ap);
1872: return -1;
1.1 deraadt 1873: }
1874:
1875: void
1.104 djm 1876: verifydir(char *cp)
1.1 deraadt 1877: {
1878: struct stat stb;
1879:
1880: if (!stat(cp, &stb)) {
1881: if (S_ISDIR(stb.st_mode))
1882: return;
1883: errno = ENOTDIR;
1884: }
1885: run_err("%s: %s", cp, strerror(errno));
1.123 avsm 1886: killchild(0);
1.1 deraadt 1887: }
1888:
1889: int
1.104 djm 1890: okname(char *cp0)
1.1 deraadt 1891: {
1892: int c;
1893: char *cp;
1894:
1895: cp = cp0;
1896: do {
1.75 deraadt 1897: c = (int)*cp;
1.1 deraadt 1898: if (c & 0200)
1899: goto bad;
1.179 deraadt 1900: if (!isalpha(c) && !isdigit((unsigned char)c)) {
1.101 markus 1901: switch (c) {
1902: case '\'':
1903: case '"':
1904: case '`':
1905: case ' ':
1906: case '#':
1907: goto bad;
1908: default:
1909: break;
1910: }
1911: }
1.1 deraadt 1912: } while (*++cp);
1913: return (1);
1914:
1.186 schwarze 1915: bad: fmprintf(stderr, "%s: invalid user name\n", cp0);
1.1 deraadt 1916: return (0);
1917: }
1918:
1919: BUF *
1.104 djm 1920: allocbuf(BUF *bp, int fd, int blksize)
1.1 deraadt 1921: {
1922: size_t size;
1923: struct stat stb;
1924:
1.205 deraadt 1925: if (fstat(fd, &stb) == -1) {
1.1 deraadt 1926: run_err("fstat: %s", strerror(errno));
1927: return (0);
1928: }
1.187 deraadt 1929: size = ROUNDUP(stb.st_blksize, blksize);
1.95 markus 1930: if (size == 0)
1.18 markus 1931: size = blksize;
1.1 deraadt 1932: if (bp->cnt >= size)
1933: return (bp);
1.192 deraadt 1934: bp->buf = xrecallocarray(bp->buf, bp->cnt, size, 1);
1.1 deraadt 1935: bp->cnt = size;
1936: return (bp);
1937: }
1938:
1939: void
1.104 djm 1940: lostconn(int signo)
1.1 deraadt 1941: {
1942: if (!iamremote)
1.172 dtucker 1943: (void)write(STDERR_FILENO, "lost connection\n", 16);
1.74 markus 1944: if (signo)
1945: _exit(1);
1946: else
1947: exit(1);
1.4 aaron 1948: }
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