| /* |
| * 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 1.97 2003/01/10 08:19:07 fgsch Exp $"); |
| |
| #include "xmalloc.h" |
| #include "atomicio.h" |
| #include "pathnames.h" |
| #include "log.h" |
| #include "misc.h" |
| #include "progressmeter.h" |
| |
| #ifdef HAVE___PROGNAME |
| extern char *__progname; |
| #else |
| char *__progname; |
| #endif |
| |
| /* Struct for addargs */ |
| arglist args; |
| |
| /* 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 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 = _PATH_SSH_PROGRAM; |
| |
| /* This is used to store the pid of ssh_program */ |
| pid_t do_cmd_pid; |
| |
| /* |
| * 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. */ |
| do_cmd_pid = fork(); |
| if (do_cmd_pid == 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(&args, "-l%s", remuser); |
| addargs(&args, "%s", host); |
| addargs(&args, "%s", cmd); |
| |
| execvp(ssh_program, args.list); |
| perror(ssh_program); |
| exit(1); |
| } else if (do_cmd_pid == -1) { |
| fatal("fork: %s", strerror(errno)); |
| } |
| /* Parent. Close the other side, and return the local side. */ |
| close(pin[0]); |
| *fdout = pin[1]; |
| close(pout[1]); |
| *fdin = pout[0]; |
| return 0; |
| } |
| |
| typedef struct { |
| int cnt; |
| char *buf; |
| } BUF; |
| |
| BUF *allocbuf(BUF *, int, int); |
| 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, status; |
| char *targ; |
| extern char *optarg; |
| extern int optind; |
| |
| __progname = get_progname(argv[0]); |
| |
| args.list = NULL; |
| addargs(&args, "ssh"); /* overwritten with ssh_program */ |
| addargs(&args, "-x"); |
| addargs(&args, "-oForwardAgent no"); |
| addargs(&args, "-oClearAllForwardings yes"); |
| |
| fflag = tflag = 0; |
| while ((ch = getopt(argc, argv, "dfprtvBCc:i:P:q46S:o:F:")) != -1) |
| switch (ch) { |
| /* User-visible flags. */ |
| case '4': |
| case '6': |
| case 'C': |
| addargs(&args, "-%c", ch); |
| break; |
| case 'o': |
| case 'c': |
| case 'i': |
| case 'F': |
| addargs(&args, "-%c%s", ch, optarg); |
| break; |
| case 'P': |
| addargs(&args, "-p%s", optarg); |
| break; |
| case 'B': |
| addargs(&args, "-oBatchmode yes"); |
| break; |
| case 'p': |
| pflag = 1; |
| break; |
| case 'r': |
| iamrecursive = 1; |
| break; |
| case 'S': |
| ssh_program = xstrdup(optarg); |
| break; |
| case 'v': |
| addargs(&args, "-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; |
| #ifdef HAVE_CYGWIN |
| setmode(0, O_BINARY); |
| #endif |
| break; |
| 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; |
| do_cmd_pid = -1; |
| /* Command to be executed on remote system using "ssh". */ |
| (void) snprintf(cmd, sizeof 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]); |
| } |
| /* |
| * Finally check the exit status of the ssh process, if one was forked |
| * and no error has occured yet |
| */ |
| if (do_cmd_pid != -1 && errs == 0) { |
| if (remin != -1) |
| (void) close(remin); |
| if (remout != -1) |
| (void) close(remout); |
| if (waitpid(do_cmd_pid, &status, 0) == -1) |
| errs = 1; |
| else { |
| if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) |
| errs = 1; |
| } |
| } |
| exit(errs != 0); |
| } |
| |
| 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 = strrchr(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 */ |
| static char *ssh_options = |
| "-x -o'ClearAllForwardings yes'"; |
| *src++ = 0; |
| if (*src == 0) |
| src = "."; |
| host = strrchr(argv[i], '@'); |
| len = strlen(ssh_program) + strlen(argv[i]) + |
| strlen(src) + (tuser ? strlen(tuser) : 0) + |
| strlen(thost) + strlen(targ) + |
| strlen(ssh_options) + CMDNEEDS + 20; |
| 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; |
| snprintf(bp, len, |
| "%s%s %s -n " |
| "-l %s %s %s %s '%s%s%s:%s'", |
| ssh_program, verbose_mode ? " -v" : "", |
| ssh_options, suser, host, cmd, src, |
| tuser ? tuser : "", tuser ? "@" : "", |
| thost, targ); |
| } else { |
| host = cleanhostname(argv[i]); |
| snprintf(bp, len, |
| "exec %s%s %s -n %s " |
| "%s %s '%s%s%s:%s'", |
| ssh_program, verbose_mode ? " -v" : "", |
| ssh_options, 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) snprintf(bp, len, "%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) snprintf(bp, len, "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 = strrchr(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) snprintf(bp, len, "%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, amt, result, statbytes; |
| int fd, haderr, indx; |
| char *last, *name, buf[2048]; |
| int len; |
| |
| for (indx = 0; indx < argc; ++indx) { |
| name = argv[indx]; |
| statbytes = 0; |
| len = strlen(name); |
| while (len > 1 && name[len-1] == '/') |
| name[--len] = '\0'; |
| if (strchr(name, '\n') != NULL) { |
| run_err("%s: skipping, filename contains a newline", |
| name); |
| goto next; |
| } |
| 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) snprintf(buf, sizeof buf, "T%lu 0 %lu 0\n", |
| (u_long) stb.st_mtime, |
| (u_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) |
| #ifdef HAVE_LONG_LONG_INT |
| snprintf(buf, sizeof buf, "C%04o %lld %s\n", |
| (u_int) (stb.st_mode & FILEMODEMASK), |
| (long long)stb.st_size, last); |
| #else |
| /* XXX: Handle integer overflow? */ |
| snprintf(buf, sizeof buf, "C%04o %lu %s\n", |
| (u_int) (stb.st_mode & FILEMODEMASK), |
| (u_long) stb.st_size, last); |
| #endif |
| if (verbose_mode) { |
| fprintf(stderr, "Sending file modes: %s", buf); |
| } |
| (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) |
| start_progress_meter(curfile, stb.st_size, &statbytes); |
| /* 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) |
| stop_progress_meter(); |
| |
| 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) snprintf(path, sizeof(path), "T%lu 0 %lu 0\n", |
| (u_long) statp->st_mtime, |
| (u_long) statp->st_atime); |
| (void) atomicio(write, remout, path, strlen(path)); |
| if (response() < 0) { |
| closedir(dirp); |
| return; |
| } |
| } |
| (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n", |
| (u_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)) != NULL) { |
| 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) snprintf(path, sizeof 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, statbytes; |
| int setimes, targisdir, wrerrno = 0; |
| char ch, *cp, *np, *targ, *why, *vect[1], buf[2048]; |
| struct timeval tv[2]; |
| |
| #define atime tv[0] |
| #define mtime tv[1] |
| #define SCREWUP(str) do { why = str; goto screwup; } while (0) |
| |
| 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; |
| |
| cp = buf; |
| if (*cp == 'T') { |
| setimes++; |
| cp++; |
| mtime.tv_sec = strtol(cp, &cp, 10); |
| if (!cp || *cp++ != ' ') |
| SCREWUP("mtime.sec not delimited"); |
| mtime.tv_usec = strtol(cp, &cp, 10); |
| if (!cp || *cp++ != ' ') |
| SCREWUP("mtime.usec not delimited"); |
| atime.tv_sec = strtol(cp, &cp, 10); |
| if (!cp || *cp++ != ' ') |
| SCREWUP("atime.sec not delimited"); |
| atime.tv_usec = strtol(cp, &cp, 10); |
| if (!cp || *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; isdigit(*cp);) |
| 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) { |
| if (namebuf) |
| xfree(namebuf); |
| namebuf = xmalloc(need); |
| cursize = need; |
| } |
| (void) snprintf(namebuf, need, "%s%s%s", targ, |
| strcmp(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] = xstrdup(np); |
| sink(1, vect); |
| if (setimes) { |
| setimes = 0; |
| if (utimes(vect[0], tv) < 0) |
| run_err("%s: set times: %s", |
| vect[0], strerror(errno)); |
| } |
| if (mod_flag) |
| (void) chmod(vect[0], mode); |
| if (vect[0]) |
| xfree(vect[0]); |
| continue; |
| } |
| omode = mode; |
| mode |= S_IWRITE; |
| if ((ofd = open(np, O_WRONLY|O_CREAT, 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; |
| |
| statbytes = 0; |
| if (showprogress) |
| start_progress_meter(curfile, size, &statbytes); |
| 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) |
| stop_progress_meter(); |
| if (count != 0 && wrerr == NO && |
| (j = atomicio(write, ofd, bp->buf, count)) != count) { |
| wrerr = YES; |
| wrerrno = j >= 0 ? EIO : errno; |
| } |
| if (ftruncate(ofd, size)) { |
| run_err("%s: truncate: %s", np, strerror(errno)); |
| wrerr = DISPLAYED; |
| } |
| if (pflag) { |
| if (exists || omode != mode) |
| #ifdef HAVE_FCHMOD |
| if (fchmod(ofd, omode)) |
| #else /* HAVE_FCHMOD */ |
| if (chmod(np, omode)) |
| #endif /* HAVE_FCHMOD */ |
| run_err("%s: set mode: %s", |
| np, strerror(errno)); |
| } else { |
| if (!exists && omode != mode) |
| #ifdef HAVE_FCHMOD |
| if (fchmod(ofd, omode & ~mask)) |
| #else /* HAVE_FCHMOD */ |
| if (chmod(np, omode & ~mask)) |
| #endif /* HAVE_FCHMOD */ |
| 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(void) |
| { |
| 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) |
| { |
| (void) fprintf(stderr, |
| "usage: scp [-pqrvBC46] [-F config] [-S program] [-P port]\n" |
| " [-c cipher] [-i identity] [-o option]\n" |
| " [[user@]host1:]file1 [...] [[user@]host2:]file2\n"); |
| exit(1); |
| } |
| |
| void |
| run_err(const char *fmt,...) |
| { |
| static FILE *fp; |
| va_list ap; |
| |
| ++errs; |
| if (fp == NULL && !(fp = fdopen(remout, "w"))) |
| return; |
| (void) fprintf(fp, "%c", 0x01); |
| (void) fprintf(fp, "scp: "); |
| va_start(ap, fmt); |
| (void) vfprintf(fp, fmt, ap); |
| va_end(ap); |
| (void) fprintf(fp, "\n"); |
| (void) fflush(fp); |
| |
| if (!iamremote) { |
| va_start(ap, fmt); |
| vfprintf(stderr, fmt, ap); |
| va_end(ap); |
| fprintf(stderr, "\n"); |
| } |
| } |
| |
| 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 = (int)*cp; |
| if (c & 0200) |
| goto bad; |
| if (!isalpha(c) && !isdigit(c) && |
| c != '@' && 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; |
| #ifdef HAVE_STRUCT_STAT_ST_BLKSIZE |
| struct stat stb; |
| |
| if (fstat(fd, &stb) < 0) { |
| run_err("fstat: %s", strerror(errno)); |
| return (0); |
| } |
| size = roundup(stb.st_blksize, blksize); |
| if (size == 0) |
| size = blksize; |
| #else /* HAVE_STRUCT_STAT_ST_BLKSIZE */ |
| size = blksize; |
| #endif /* HAVE_STRUCT_STAT_ST_BLKSIZE */ |
| if (bp->cnt >= size) |
| return (bp); |
| if (bp->buf == NULL) |
| bp->buf = xmalloc(size); |
| else |
| bp->buf = xrealloc(bp->buf, size); |
| memset(bp->buf, 0, size); |
| bp->cnt = size; |
| return (bp); |
| } |
| |
| void |
| lostconn(signo) |
| int signo; |
| { |
| if (!iamremote) |
| write(STDERR_FILENO, "lost connection\n", 16); |
| if (signo) |
| _exit(1); |
| else |
| exit(1); |
| } |