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-rw-r--r--crypto/openssh/scp.c1235
1 files changed, 1235 insertions, 0 deletions
diff --git a/crypto/openssh/scp.c b/crypto/openssh/scp.c
new file mode 100644
index 0000000..a412b8d
--- /dev/null
+++ b/crypto/openssh/scp.c
@@ -0,0 +1,1235 @@
+/*
+ * scp - secure remote copy. This is basically patched BSD rcp which
+ * uses ssh to do the data transfer (instead of using rcmd).
+ *
+ * NOTE: This version should NOT be suid root. (This uses ssh to
+ * do the transfer and ssh has the necessary privileges.)
+ *
+ * 1995 Timo Rinne <tri@iki.fi>, Tatu Ylonen <ylo@cs.hut.fi>
+ *
+ * As far as I am concerned, the code I have written for this software
+ * can be used freely for any purpose. Any derived versions of this
+ * software must be clearly marked as such, and if the derived work is
+ * incompatible with the protocol description in the RFC file, it must be
+ * called by a name other than "ssh" or "Secure Shell".
+ */
+/*
+ * Copyright (c) 1999 Theo de Raadt. All rights reserved.
+ * Copyright (c) 1999 Aaron Campbell. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * Parts from:
+ *
+ * Copyright (c) 1983, 1990, 1992, 1993, 1995
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ */
+
+#include "includes.h"
+RCSID("$OpenBSD: scp.c,v 1.43 2000/10/18 18:23:02 markus Exp $");
+
+#include "ssh.h"
+#include "xmalloc.h"
+
+#define _PATH_CP "cp"
+
+/* For progressmeter() -- number of seconds before xfer considered "stalled" */
+#define STALLTIME 5
+
+/* Visual statistics about files as they are transferred. */
+void progressmeter(int);
+
+/* Returns width of the terminal (for progress meter calculations). */
+int getttywidth(void);
+int do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout, int argc);
+
+/* setup arguments for the call to ssh */
+void addargs(char *fmt, ...) __attribute__((format(printf, 1, 2)));
+
+/* Time a transfer started. */
+static struct timeval start;
+
+/* Number of bytes of current file transferred so far. */
+volatile unsigned long statbytes;
+
+/* Total size of current file. */
+off_t totalbytes = 0;
+
+/* Name of current file being transferred. */
+char *curfile;
+
+/* This is set to non-zero to enable verbose mode. */
+int verbose_mode = 0;
+
+/* This is set to non-zero if compression is desired. */
+int compress = 0;
+
+/* This is set to zero if the progressmeter is not desired. */
+int showprogress = 1;
+
+/* This is the program to execute for the secured connection. ("ssh" or -S) */
+char *ssh_program = SSH_PROGRAM;
+
+/* This is the list of arguments that scp passes to ssh */
+struct {
+ char **list;
+ int num;
+ int nalloc;
+} args;
+
+/*
+ * This function executes the given command as the specified user on the
+ * given host. This returns < 0 if execution fails, and >= 0 otherwise. This
+ * assigns the input and output file descriptors on success.
+ */
+
+int
+do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout, int argc)
+{
+ int pin[2], pout[2], reserved[2];
+
+ if (verbose_mode)
+ fprintf(stderr, "Executing: program %s host %s, user %s, command %s\n",
+ ssh_program, host, remuser ? remuser : "(unspecified)", cmd);
+
+ /*
+ * Reserve two descriptors so that the real pipes won't get
+ * descriptors 0 and 1 because that will screw up dup2 below.
+ */
+ pipe(reserved);
+
+ /* Create a socket pair for communicating with ssh. */
+ if (pipe(pin) < 0)
+ fatal("pipe: %s", strerror(errno));
+ if (pipe(pout) < 0)
+ fatal("pipe: %s", strerror(errno));
+
+ /* Free the reserved descriptors. */
+ close(reserved[0]);
+ close(reserved[1]);
+
+ /* For a child to execute the command on the remote host using ssh. */
+ if (fork() == 0) {
+ /* Child. */
+ close(pin[1]);
+ close(pout[0]);
+ dup2(pin[0], 0);
+ dup2(pout[1], 1);
+ close(pin[0]);
+ close(pout[1]);
+
+ args.list[0] = ssh_program;
+ if (remuser != NULL)
+ addargs("-l%s", remuser);
+ addargs("%s", host);
+ addargs("%s", cmd);
+
+ execvp(ssh_program, args.list);
+ perror(ssh_program);
+ exit(1);
+ }
+ /* Parent. Close the other side, and return the local side. */
+ close(pin[0]);
+ *fdout = pin[1];
+ close(pout[1]);
+ *fdin = pout[0];
+ return 0;
+}
+
+void
+fatal(const char *fmt,...)
+{
+ va_list ap;
+ char buf[1024];
+
+ va_start(ap, fmt);
+ vsnprintf(buf, sizeof(buf), fmt, ap);
+ va_end(ap);
+ fprintf(stderr, "%s\n", buf);
+ exit(255);
+}
+
+typedef struct {
+ int cnt;
+ char *buf;
+} BUF;
+
+extern int iamremote;
+
+BUF *allocbuf(BUF *, int, int);
+char *colon(char *);
+void lostconn(int);
+void nospace(void);
+int okname(char *);
+void run_err(const char *,...);
+void verifydir(char *);
+
+struct passwd *pwd;
+uid_t userid;
+int errs, remin, remout;
+int pflag, iamremote, iamrecursive, targetshouldbedirectory;
+
+#define CMDNEEDS 64
+char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */
+
+int response(void);
+void rsource(char *, struct stat *);
+void sink(int, char *[]);
+void source(int, char *[]);
+void tolocal(int, char *[]);
+void toremote(char *, int, char *[]);
+void usage(void);
+
+int
+main(argc, argv)
+ int argc;
+ char *argv[];
+{
+ int ch, fflag, tflag;
+ char *targ;
+ extern char *optarg;
+ extern int optind;
+
+ args.list = NULL;
+ addargs("ssh"); /* overwritten with ssh_program */
+ addargs("-x");
+ addargs("-oFallBackToRsh no");
+
+ fflag = tflag = 0;
+ while ((ch = getopt(argc, argv, "dfprtvBCc:i:P:q46S:o:")) != EOF)
+ switch (ch) {
+ /* User-visible flags. */
+ case '4':
+ case '6':
+ case 'C':
+ addargs("-%c", ch);
+ break;
+ case 'o':
+ case 'c':
+ case 'i':
+ addargs("-%c%s", ch, optarg);
+ break;
+ case 'P':
+ addargs("-p%s", optarg);
+ break;
+ case 'B':
+ addargs("-oBatchmode yes");
+ break;
+ case 'p':
+ pflag = 1;
+ break;
+ case 'r':
+ iamrecursive = 1;
+ break;
+ case 'S':
+ ssh_program = xstrdup(optarg);
+ break;
+ case 'v':
+ verbose_mode = 1;
+ break;
+ case 'q':
+ showprogress = 0;
+ break;
+
+ /* Server options. */
+ case 'd':
+ targetshouldbedirectory = 1;
+ break;
+ case 'f': /* "from" */
+ iamremote = 1;
+ fflag = 1;
+ break;
+ case 't': /* "to" */
+ iamremote = 1;
+ tflag = 1;
+ break;
+ case '?':
+ default:
+ usage();
+ }
+ argc -= optind;
+ argv += optind;
+
+ if ((pwd = getpwuid(userid = getuid())) == NULL)
+ fatal("unknown user %d", (int) userid);
+
+ if (!isatty(STDERR_FILENO))
+ showprogress = 0;
+
+ remin = STDIN_FILENO;
+ remout = STDOUT_FILENO;
+
+ if (fflag) {
+ /* Follow "protocol", send data. */
+ (void) response();
+ source(argc, argv);
+ exit(errs != 0);
+ }
+ if (tflag) {
+ /* Receive data. */
+ sink(argc, argv);
+ exit(errs != 0);
+ }
+ if (argc < 2)
+ usage();
+ if (argc > 2)
+ targetshouldbedirectory = 1;
+
+ remin = remout = -1;
+ /* Command to be executed on remote system using "ssh". */
+ (void) sprintf(cmd, "scp%s%s%s%s", verbose_mode ? " -v" : "",
+ iamrecursive ? " -r" : "", pflag ? " -p" : "",
+ targetshouldbedirectory ? " -d" : "");
+
+ (void) signal(SIGPIPE, lostconn);
+
+ if ((targ = colon(argv[argc - 1]))) /* Dest is remote host. */
+ toremote(targ, argc, argv);
+ else {
+ tolocal(argc, argv); /* Dest is local host. */
+ if (targetshouldbedirectory)
+ verifydir(argv[argc - 1]);
+ }
+ exit(errs != 0);
+}
+
+char *
+cleanhostname(host)
+ char *host;
+{
+ if (*host == '[' && host[strlen(host) - 1] == ']') {
+ host[strlen(host) - 1] = '\0';
+ return (host + 1);
+ } else
+ return host;
+}
+
+void
+toremote(targ, argc, argv)
+ char *targ, *argv[];
+ int argc;
+{
+ int i, len;
+ char *bp, *host, *src, *suser, *thost, *tuser;
+
+ *targ++ = 0;
+ if (*targ == 0)
+ targ = ".";
+
+ if ((thost = strchr(argv[argc - 1], '@'))) {
+ /* user@host */
+ *thost++ = 0;
+ tuser = argv[argc - 1];
+ if (*tuser == '\0')
+ tuser = NULL;
+ else if (!okname(tuser))
+ exit(1);
+ } else {
+ thost = argv[argc - 1];
+ tuser = NULL;
+ }
+
+ for (i = 0; i < argc - 1; i++) {
+ src = colon(argv[i]);
+ if (src) { /* remote to remote */
+ *src++ = 0;
+ if (*src == 0)
+ src = ".";
+ host = strchr(argv[i], '@');
+ len = strlen(ssh_program) + strlen(argv[i]) +
+ strlen(src) + (tuser ? strlen(tuser) : 0) +
+ strlen(thost) + strlen(targ) + CMDNEEDS + 32;
+ bp = xmalloc(len);
+ if (host) {
+ *host++ = 0;
+ host = cleanhostname(host);
+ suser = argv[i];
+ if (*suser == '\0')
+ suser = pwd->pw_name;
+ else if (!okname(suser))
+ continue;
+ (void) sprintf(bp,
+ "%s%s -x -o'FallBackToRsh no' -n -l %s %s %s %s '%s%s%s:%s'",
+ ssh_program, verbose_mode ? " -v" : "",
+ suser, host, cmd, src,
+ tuser ? tuser : "", tuser ? "@" : "",
+ thost, targ);
+ } else {
+ host = cleanhostname(argv[i]);
+ (void) sprintf(bp,
+ "exec %s%s -x -o'FallBackToRsh no' -n %s %s %s '%s%s%s:%s'",
+ ssh_program, verbose_mode ? " -v" : "",
+ host, cmd, src,
+ tuser ? tuser : "", tuser ? "@" : "",
+ thost, targ);
+ }
+ if (verbose_mode)
+ fprintf(stderr, "Executing: %s\n", bp);
+ (void) system(bp);
+ (void) xfree(bp);
+ } else { /* local to remote */
+ if (remin == -1) {
+ len = strlen(targ) + CMDNEEDS + 20;
+ bp = xmalloc(len);
+ (void) sprintf(bp, "%s -t %s", cmd, targ);
+ host = cleanhostname(thost);
+ if (do_cmd(host, tuser, bp, &remin,
+ &remout, argc) < 0)
+ exit(1);
+ if (response() < 0)
+ exit(1);
+ (void) xfree(bp);
+ }
+ source(1, argv + i);
+ }
+ }
+}
+
+void
+tolocal(argc, argv)
+ int argc;
+ char *argv[];
+{
+ int i, len;
+ char *bp, *host, *src, *suser;
+
+ for (i = 0; i < argc - 1; i++) {
+ if (!(src = colon(argv[i]))) { /* Local to local. */
+ len = strlen(_PATH_CP) + strlen(argv[i]) +
+ strlen(argv[argc - 1]) + 20;
+ bp = xmalloc(len);
+ (void) sprintf(bp, "exec %s%s%s %s %s", _PATH_CP,
+ iamrecursive ? " -r" : "", pflag ? " -p" : "",
+ argv[i], argv[argc - 1]);
+ if (verbose_mode)
+ fprintf(stderr, "Executing: %s\n", bp);
+ if (system(bp))
+ ++errs;
+ (void) xfree(bp);
+ continue;
+ }
+ *src++ = 0;
+ if (*src == 0)
+ src = ".";
+ if ((host = strchr(argv[i], '@')) == NULL) {
+ host = argv[i];
+ suser = NULL;
+ } else {
+ *host++ = 0;
+ suser = argv[i];
+ if (*suser == '\0')
+ suser = pwd->pw_name;
+ else if (!okname(suser))
+ continue;
+ }
+ host = cleanhostname(host);
+ len = strlen(src) + CMDNEEDS + 20;
+ bp = xmalloc(len);
+ (void) sprintf(bp, "%s -f %s", cmd, src);
+ if (do_cmd(host, suser, bp, &remin, &remout, argc) < 0) {
+ (void) xfree(bp);
+ ++errs;
+ continue;
+ }
+ xfree(bp);
+ sink(1, argv + argc - 1);
+ (void) close(remin);
+ remin = remout = -1;
+ }
+}
+
+void
+source(argc, argv)
+ int argc;
+ char *argv[];
+{
+ struct stat stb;
+ static BUF buffer;
+ BUF *bp;
+ off_t i;
+ int amt, fd, haderr, indx, result;
+ char *last, *name, buf[2048];
+
+ for (indx = 0; indx < argc; ++indx) {
+ name = argv[indx];
+ statbytes = 0;
+ if ((fd = open(name, O_RDONLY, 0)) < 0)
+ goto syserr;
+ if (fstat(fd, &stb) < 0) {
+syserr: run_err("%s: %s", name, strerror(errno));
+ goto next;
+ }
+ switch (stb.st_mode & S_IFMT) {
+ case S_IFREG:
+ break;
+ case S_IFDIR:
+ if (iamrecursive) {
+ rsource(name, &stb);
+ goto next;
+ }
+ /* FALLTHROUGH */
+ default:
+ run_err("%s: not a regular file", name);
+ goto next;
+ }
+ if ((last = strrchr(name, '/')) == NULL)
+ last = name;
+ else
+ ++last;
+ curfile = last;
+ if (pflag) {
+ /*
+ * Make it compatible with possible future
+ * versions expecting microseconds.
+ */
+ (void) sprintf(buf, "T%lu 0 %lu 0\n",
+ (unsigned long) stb.st_mtime,
+ (unsigned long) stb.st_atime);
+ (void) atomicio(write, remout, buf, strlen(buf));
+ if (response() < 0)
+ goto next;
+ }
+#define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
+ (void) sprintf(buf, "C%04o %lu %s\n",
+ (unsigned int) (stb.st_mode & FILEMODEMASK),
+ (unsigned long) stb.st_size,
+ last);
+ if (verbose_mode) {
+ fprintf(stderr, "Sending file modes: %s", buf);
+ fflush(stderr);
+ }
+ (void) atomicio(write, remout, buf, strlen(buf));
+ if (response() < 0)
+ goto next;
+ if ((bp = allocbuf(&buffer, fd, 2048)) == NULL) {
+next: (void) close(fd);
+ continue;
+ }
+ if (showprogress) {
+ totalbytes = stb.st_size;
+ progressmeter(-1);
+ }
+ /* Keep writing after an error so that we stay sync'd up. */
+ for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
+ amt = bp->cnt;
+ if (i + amt > stb.st_size)
+ amt = stb.st_size - i;
+ if (!haderr) {
+ result = atomicio(read, fd, bp->buf, amt);
+ if (result != amt)
+ haderr = result >= 0 ? EIO : errno;
+ }
+ if (haderr)
+ (void) atomicio(write, remout, bp->buf, amt);
+ else {
+ result = atomicio(write, remout, bp->buf, amt);
+ if (result != amt)
+ haderr = result >= 0 ? EIO : errno;
+ statbytes += result;
+ }
+ }
+ if (showprogress)
+ progressmeter(1);
+
+ if (close(fd) < 0 && !haderr)
+ haderr = errno;
+ if (!haderr)
+ (void) atomicio(write, remout, "", 1);
+ else
+ run_err("%s: %s", name, strerror(haderr));
+ (void) response();
+ }
+}
+
+void
+rsource(name, statp)
+ char *name;
+ struct stat *statp;
+{
+ DIR *dirp;
+ struct dirent *dp;
+ char *last, *vect[1], path[1100];
+
+ if (!(dirp = opendir(name))) {
+ run_err("%s: %s", name, strerror(errno));
+ return;
+ }
+ last = strrchr(name, '/');
+ if (last == 0)
+ last = name;
+ else
+ last++;
+ if (pflag) {
+ (void) sprintf(path, "T%lu 0 %lu 0\n",
+ (unsigned long) statp->st_mtime,
+ (unsigned long) statp->st_atime);
+ (void) atomicio(write, remout, path, strlen(path));
+ if (response() < 0) {
+ closedir(dirp);
+ return;
+ }
+ }
+ (void) sprintf(path, "D%04o %d %.1024s\n",
+ (unsigned int) (statp->st_mode & FILEMODEMASK), 0, last);
+ if (verbose_mode)
+ fprintf(stderr, "Entering directory: %s", path);
+ (void) atomicio(write, remout, path, strlen(path));
+ if (response() < 0) {
+ closedir(dirp);
+ return;
+ }
+ while ((dp = readdir(dirp))) {
+ if (dp->d_ino == 0)
+ continue;
+ if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
+ continue;
+ if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) {
+ run_err("%s/%s: name too long", name, dp->d_name);
+ continue;
+ }
+ (void) sprintf(path, "%s/%s", name, dp->d_name);
+ vect[0] = path;
+ source(1, vect);
+ }
+ (void) closedir(dirp);
+ (void) atomicio(write, remout, "E\n", 2);
+ (void) response();
+}
+
+void
+sink(argc, argv)
+ int argc;
+ char *argv[];
+{
+ static BUF buffer;
+ struct stat stb;
+ enum {
+ YES, NO, DISPLAYED
+ } wrerr;
+ BUF *bp;
+ off_t i, j;
+ int amt, count, exists, first, mask, mode, ofd, omode;
+ off_t size;
+ int setimes, targisdir, wrerrno = 0;
+ char ch, *cp, *np, *targ, *why, *vect[1], buf[2048];
+ int dummy_usec;
+ struct timeval tv[2];
+
+#define SCREWUP(str) { why = str; goto screwup; }
+
+ setimes = targisdir = 0;
+ mask = umask(0);
+ if (!pflag)
+ (void) umask(mask);
+ if (argc != 1) {
+ run_err("ambiguous target");
+ exit(1);
+ }
+ targ = *argv;
+ if (targetshouldbedirectory)
+ verifydir(targ);
+
+ (void) atomicio(write, remout, "", 1);
+ if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
+ targisdir = 1;
+ for (first = 1;; first = 0) {
+ cp = buf;
+ if (atomicio(read, remin, cp, 1) <= 0)
+ return;
+ if (*cp++ == '\n')
+ SCREWUP("unexpected <newline>");
+ do {
+ if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
+ SCREWUP("lost connection");
+ *cp++ = ch;
+ } while (cp < &buf[sizeof(buf) - 1] && ch != '\n');
+ *cp = 0;
+
+ if (buf[0] == '\01' || buf[0] == '\02') {
+ if (iamremote == 0)
+ (void) atomicio(write, STDERR_FILENO,
+ buf + 1, strlen(buf + 1));
+ if (buf[0] == '\02')
+ exit(1);
+ ++errs;
+ continue;
+ }
+ if (buf[0] == 'E') {
+ (void) atomicio(write, remout, "", 1);
+ return;
+ }
+ if (ch == '\n')
+ *--cp = 0;
+
+#define getnum(t) (t) = 0; \
+ while (*cp >= '0' && *cp <= '9') (t) = (t) * 10 + (*cp++ - '0');
+ cp = buf;
+ if (*cp == 'T') {
+ setimes++;
+ cp++;
+ getnum(tv[1].tv_sec);
+ if (*cp++ != ' ')
+ SCREWUP("mtime.sec not delimited");
+ getnum(dummy_usec);
+ tv[1].tv_usec = 0;
+ if (*cp++ != ' ')
+ SCREWUP("mtime.usec not delimited");
+ getnum(tv[0].tv_sec);
+ if (*cp++ != ' ')
+ SCREWUP("atime.sec not delimited");
+ getnum(dummy_usec);
+ tv[0].tv_usec = 0;
+ if (*cp++ != '\0')
+ SCREWUP("atime.usec not delimited");
+ (void) atomicio(write, remout, "", 1);
+ continue;
+ }
+ if (*cp != 'C' && *cp != 'D') {
+ /*
+ * Check for the case "rcp remote:foo\* local:bar".
+ * In this case, the line "No match." can be returned
+ * by the shell before the rcp command on the remote is
+ * executed so the ^Aerror_message convention isn't
+ * followed.
+ */
+ if (first) {
+ run_err("%s", cp);
+ exit(1);
+ }
+ SCREWUP("expected control record");
+ }
+ mode = 0;
+ for (++cp; cp < buf + 5; cp++) {
+ if (*cp < '0' || *cp > '7')
+ SCREWUP("bad mode");
+ mode = (mode << 3) | (*cp - '0');
+ }
+ if (*cp++ != ' ')
+ SCREWUP("mode not delimited");
+
+ for (size = 0; *cp >= '0' && *cp <= '9';)
+ size = size * 10 + (*cp++ - '0');
+ if (*cp++ != ' ')
+ SCREWUP("size not delimited");
+ if (targisdir) {
+ static char *namebuf;
+ static int cursize;
+ size_t need;
+
+ need = strlen(targ) + strlen(cp) + 250;
+ if (need > cursize)
+ namebuf = xmalloc(need);
+ (void) sprintf(namebuf, "%s%s%s", targ,
+ *targ ? "/" : "", cp);
+ np = namebuf;
+ } else
+ np = targ;
+ curfile = cp;
+ exists = stat(np, &stb) == 0;
+ if (buf[0] == 'D') {
+ int mod_flag = pflag;
+ if (exists) {
+ if (!S_ISDIR(stb.st_mode)) {
+ errno = ENOTDIR;
+ goto bad;
+ }
+ if (pflag)
+ (void) chmod(np, mode);
+ } else {
+ /* Handle copying from a read-only
+ directory */
+ mod_flag = 1;
+ if (mkdir(np, mode | S_IRWXU) < 0)
+ goto bad;
+ }
+ vect[0] = np;
+ sink(1, vect);
+ if (setimes) {
+ setimes = 0;
+ if (utimes(np, tv) < 0)
+ run_err("%s: set times: %s",
+ np, strerror(errno));
+ }
+ if (mod_flag)
+ (void) chmod(np, mode);
+ continue;
+ }
+ omode = mode;
+ mode |= S_IWRITE;
+ if ((ofd = open(np, O_WRONLY | O_CREAT | O_TRUNC, mode)) < 0) {
+bad: run_err("%s: %s", np, strerror(errno));
+ continue;
+ }
+ (void) atomicio(write, remout, "", 1);
+ if ((bp = allocbuf(&buffer, ofd, 4096)) == NULL) {
+ (void) close(ofd);
+ continue;
+ }
+ cp = bp->buf;
+ wrerr = NO;
+
+ if (showprogress) {
+ totalbytes = size;
+ progressmeter(-1);
+ }
+ statbytes = 0;
+ for (count = i = 0; i < size; i += 4096) {
+ amt = 4096;
+ if (i + amt > size)
+ amt = size - i;
+ count += amt;
+ do {
+ j = read(remin, cp, amt);
+ if (j == -1 && (errno == EINTR || errno == EAGAIN)) {
+ continue;
+ } else if (j <= 0) {
+ run_err("%s", j ? strerror(errno) :
+ "dropped connection");
+ exit(1);
+ }
+ amt -= j;
+ cp += j;
+ statbytes += j;
+ } while (amt > 0);
+ if (count == bp->cnt) {
+ /* Keep reading so we stay sync'd up. */
+ if (wrerr == NO) {
+ j = atomicio(write, ofd, bp->buf, count);
+ if (j != count) {
+ wrerr = YES;
+ wrerrno = j >= 0 ? EIO : errno;
+ }
+ }
+ count = 0;
+ cp = bp->buf;
+ }
+ }
+ if (showprogress)
+ progressmeter(1);
+ if (count != 0 && wrerr == NO &&
+ (j = atomicio(write, ofd, bp->buf, count)) != count) {
+ wrerr = YES;
+ wrerrno = j >= 0 ? EIO : errno;
+ }
+#if 0
+ if (ftruncate(ofd, size)) {
+ run_err("%s: truncate: %s", np, strerror(errno));
+ wrerr = DISPLAYED;
+ }
+#endif
+ if (pflag) {
+ if (exists || omode != mode)
+ if (fchmod(ofd, omode))
+ run_err("%s: set mode: %s",
+ np, strerror(errno));
+ } else {
+ if (!exists && omode != mode)
+ if (fchmod(ofd, omode & ~mask))
+ run_err("%s: set mode: %s",
+ np, strerror(errno));
+ }
+ if (close(ofd) == -1) {
+ wrerr = YES;
+ wrerrno = errno;
+ }
+ (void) response();
+ if (setimes && wrerr == NO) {
+ setimes = 0;
+ if (utimes(np, tv) < 0) {
+ run_err("%s: set times: %s",
+ np, strerror(errno));
+ wrerr = DISPLAYED;
+ }
+ }
+ switch (wrerr) {
+ case YES:
+ run_err("%s: %s", np, strerror(wrerrno));
+ break;
+ case NO:
+ (void) atomicio(write, remout, "", 1);
+ break;
+ case DISPLAYED:
+ break;
+ }
+ }
+screwup:
+ run_err("protocol error: %s", why);
+ exit(1);
+}
+
+int
+response()
+{
+ char ch, *cp, resp, rbuf[2048];
+
+ if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp))
+ lostconn(0);
+
+ cp = rbuf;
+ switch (resp) {
+ case 0: /* ok */
+ return (0);
+ default:
+ *cp++ = resp;
+ /* FALLTHROUGH */
+ case 1: /* error, followed by error msg */
+ case 2: /* fatal error, "" */
+ do {
+ if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
+ lostconn(0);
+ *cp++ = ch;
+ } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n');
+
+ if (!iamremote)
+ (void) atomicio(write, STDERR_FILENO, rbuf, cp - rbuf);
+ ++errs;
+ if (resp == 1)
+ return (-1);
+ exit(1);
+ }
+ /* NOTREACHED */
+}
+
+void
+usage()
+{
+ (void) fprintf(stderr, "usage: scp "
+ "[-pqrvC46] [-S ssh] [-P port] [-c cipher] [-i identity] f1 f2; or:\n"
+ " scp [options] f1 ... fn directory\n");
+ exit(1);
+}
+
+void
+run_err(const char *fmt,...)
+{
+ static FILE *fp;
+ va_list ap;
+ va_start(ap, fmt);
+
+ ++errs;
+ if (fp == NULL && !(fp = fdopen(remout, "w")))
+ return;
+ (void) fprintf(fp, "%c", 0x01);
+ (void) fprintf(fp, "scp: ");
+ (void) vfprintf(fp, fmt, ap);
+ (void) fprintf(fp, "\n");
+ (void) fflush(fp);
+
+ if (!iamremote) {
+ vfprintf(stderr, fmt, ap);
+ fprintf(stderr, "\n");
+ }
+ va_end(ap);
+}
+
+char *
+colon(cp)
+ char *cp;
+{
+ int flag = 0;
+
+ if (*cp == ':') /* Leading colon is part of file name. */
+ return (0);
+ if (*cp == '[')
+ flag = 1;
+
+ for (; *cp; ++cp) {
+ if (*cp == '@' && *(cp+1) == '[')
+ flag = 1;
+ if (*cp == ']' && *(cp+1) == ':' && flag)
+ return (cp+1);
+ if (*cp == ':' && !flag)
+ return (cp);
+ if (*cp == '/')
+ return (0);
+ }
+ return (0);
+}
+
+void
+verifydir(cp)
+ char *cp;
+{
+ struct stat stb;
+
+ if (!stat(cp, &stb)) {
+ if (S_ISDIR(stb.st_mode))
+ return;
+ errno = ENOTDIR;
+ }
+ run_err("%s: %s", cp, strerror(errno));
+ exit(1);
+}
+
+int
+okname(cp0)
+ char *cp0;
+{
+ int c;
+ char *cp;
+
+ cp = cp0;
+ do {
+ c = *cp;
+ if (c & 0200)
+ goto bad;
+ if (!isalpha(c) && !isdigit(c) && c != '_' && c != '-' && c != '.')
+ goto bad;
+ } while (*++cp);
+ return (1);
+
+bad: fprintf(stderr, "%s: invalid user name\n", cp0);
+ return (0);
+}
+
+BUF *
+allocbuf(bp, fd, blksize)
+ BUF *bp;
+ int fd, blksize;
+{
+ size_t size;
+ struct stat stb;
+
+ if (fstat(fd, &stb) < 0) {
+ run_err("fstat: %s", strerror(errno));
+ return (0);
+ }
+ if (stb.st_blksize == 0)
+ size = blksize;
+ else
+ size = blksize + (stb.st_blksize - blksize % stb.st_blksize) %
+ stb.st_blksize;
+ if (bp->cnt >= size)
+ return (bp);
+ if (bp->buf == NULL)
+ bp->buf = xmalloc(size);
+ else
+ bp->buf = xrealloc(bp->buf, size);
+ bp->cnt = size;
+ return (bp);
+}
+
+void
+lostconn(signo)
+ int signo;
+{
+ if (!iamremote)
+ fprintf(stderr, "lost connection\n");
+ exit(1);
+}
+
+
+void
+alarmtimer(int wait)
+{
+ struct itimerval itv;
+
+ itv.it_value.tv_sec = wait;
+ itv.it_value.tv_usec = 0;
+ itv.it_interval = itv.it_value;
+ setitimer(ITIMER_REAL, &itv, NULL);
+}
+
+void
+updateprogressmeter(int ignore)
+{
+ int save_errno = errno;
+
+ progressmeter(0);
+ errno = save_errno;
+}
+
+int
+foregroundproc()
+{
+ static pid_t pgrp = -1;
+ int ctty_pgrp;
+
+ if (pgrp == -1)
+ pgrp = getpgrp();
+
+ return ((ioctl(STDOUT_FILENO, TIOCGPGRP, &ctty_pgrp) != -1 &&
+ ctty_pgrp == pgrp));
+}
+
+void
+progressmeter(int flag)
+{
+ static const char prefixes[] = " KMGTP";
+ static struct timeval lastupdate;
+ static off_t lastsize;
+ struct timeval now, td, wait;
+ off_t cursize, abbrevsize;
+ double elapsed;
+ int ratio, barlength, i, remaining;
+ char buf[256];
+
+ if (flag == -1) {
+ (void) gettimeofday(&start, (struct timezone *) 0);
+ lastupdate = start;
+ lastsize = 0;
+ }
+ if (foregroundproc() == 0)
+ return;
+
+ (void) gettimeofday(&now, (struct timezone *) 0);
+ cursize = statbytes;
+ if (totalbytes != 0) {
+ ratio = 100.0 * cursize / totalbytes;
+ ratio = MAX(ratio, 0);
+ ratio = MIN(ratio, 100);
+ } else
+ ratio = 100;
+
+ snprintf(buf, sizeof(buf), "\r%-20.20s %3d%% ", curfile, ratio);
+
+ barlength = getttywidth() - 51;
+ if (barlength > 0) {
+ i = barlength * ratio / 100;
+ snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
+ "|%.*s%*s|", i,
+ "*****************************************************************************"
+ "*****************************************************************************",
+ barlength - i, "");
+ }
+ i = 0;
+ abbrevsize = cursize;
+ while (abbrevsize >= 100000 && i < sizeof(prefixes)) {
+ i++;
+ abbrevsize >>= 10;
+ }
+ snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " %5qd %c%c ",
+ (quad_t) abbrevsize, prefixes[i], prefixes[i] == ' ' ? ' ' :
+ 'B');
+
+ timersub(&now, &lastupdate, &wait);
+ if (cursize > lastsize) {
+ lastupdate = now;
+ lastsize = cursize;
+ if (wait.tv_sec >= STALLTIME) {
+ start.tv_sec += wait.tv_sec;
+ start.tv_usec += wait.tv_usec;
+ }
+ wait.tv_sec = 0;
+ }
+ timersub(&now, &start, &td);
+ elapsed = td.tv_sec + (td.tv_usec / 1000000.0);
+
+ if (statbytes <= 0 || elapsed <= 0.0 || cursize > totalbytes) {
+ snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
+ " --:-- ETA");
+ } else if (wait.tv_sec >= STALLTIME) {
+ snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
+ " - stalled -");
+ } else {
+ if (flag != 1)
+ remaining =
+ (int)(totalbytes / (statbytes / elapsed) - elapsed);
+ else
+ remaining = elapsed;
+
+ i = remaining / 3600;
+ if (i)
+ snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
+ "%2d:", i);
+ else
+ snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
+ " ");
+ i = remaining % 3600;
+ snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
+ "%02d:%02d%s", i / 60, i % 60,
+ (flag != 1) ? " ETA" : " ");
+ }
+ atomicio(write, fileno(stdout), buf, strlen(buf));
+
+ if (flag == -1) {
+ signal(SIGALRM, updateprogressmeter);
+ alarmtimer(1);
+ } else if (flag == 1) {
+ alarmtimer(0);
+ atomicio(write, fileno(stdout), "\n", 1);
+ statbytes = 0;
+ }
+}
+
+int
+getttywidth(void)
+{
+ struct winsize winsize;
+
+ if (ioctl(fileno(stdout), TIOCGWINSZ, &winsize) != -1)
+ return (winsize.ws_col ? winsize.ws_col : 80);
+ else
+ return (80);
+}
+
+void
+addargs(char *fmt, ...)
+{
+ va_list ap;
+ char buf[1024];
+
+ va_start(ap, fmt);
+ vsnprintf(buf, sizeof(buf), fmt, ap);
+ va_end(ap);
+
+ if (args.list == NULL) {
+ args.nalloc = 32;
+ args.num = 0;
+ args.list = xmalloc(args.nalloc * sizeof(char *));
+ } else if (args.num+2 >= args.nalloc) {
+ args.nalloc *= 2;
+ args.list = xrealloc(args.list, args.nalloc * sizeof(char *));
+ }
+ args.list[args.num++] = xstrdup(buf);
+ args.list[args.num] = NULL;
+}
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