/* 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 , Tatu Ylonen */ /* * 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. * * $Id: scp.c,v 1.1 1999/09/26 20:53:37 deraadt Exp $ */ #include "includes.h" RCSID("$Id: scp.c,v 1.1 1999/09/26 20:53:37 deraadt Exp $"); #include "ssh.h" #include "xmalloc.h" #ifdef HAVE_UTIME_H #include #ifdef _NEXT_SOURCE struct utimbuf { time_t actime; time_t modtime; }; #endif /* _NEXT_SOURCE */ #else struct utimbuf { long actime; long modtime; }; #endif #define _PATH_CP "cp" #ifndef STDIN_FILENO #define STDIN_FILENO 0 #endif #ifndef STDOUT_FILENO #define STDOUT_FILENO 1 #endif #ifndef STDERR_FILENO #define STDERR_FILENO 2 #endif #if defined(KERBEROS_TGT_PASSING) || defined(AFS) /* This is set to non-zero to disable authentication forwarding. */ int nofwd = 0; #endif /* This is set to non-zero to enable verbose mode. */ int verbose = 0; /* This is set to non-zero if compression is desired. */ int compress = 0; /* This is set to non-zero if running in batch mode (that is, password and passphrase queries are not allowed). */ int batchmode = 0; /* This is set to the cipher type string if given on the command line. */ char *cipher = NULL; /* This is set to the RSA authentication identity file name if given on the command line. */ char *identity = NULL; /* This is the port to use in contacting the remote site (is non-NULL). */ char *port = NULL; /* 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 pin[2], pout[2], reserved[2]; if (verbose) fprintf(stderr, "Executing: host %s, user %s, command %s\n", 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) { char *args[100]; unsigned int i; /* Child. */ close(pin[1]); close(pout[0]); dup2(pin[0], 0); dup2(pout[1], 1); close(pin[0]); close(pout[1]); i = 0; args[i++] = SSH_PROGRAM; args[i++] = "-x"; args[i++] = "-oFallBackToRsh no"; if (verbose) args[i++] = "-v"; if (compress) args[i++] = "-C"; if (batchmode) args[i++] = "-oBatchMode yes"; #if defined(KERBEROS_TGT_PASSING) || defined(AFS) if (nofwd) args[i++] = "-k"; #endif if (cipher != NULL) { args[i++] = "-c"; args[i++] = cipher; } if (identity != NULL) { args[i++] = "-i"; args[i++] = identity; } if (port != NULL) { args[i++] = "-p"; args[i++] = port; } if (remuser != NULL) { args[i++] = "-l"; args[i++] = remuser; } args[i++] = host; args[i++] = cmd; args[i++] = NULL; execvp(SSH_PROGRAM, args); 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); } /* This stuff used to be in BSD rcp extern.h. */ 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 *); /* Stuff from BSD rcp.c continues. */ 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; fflag = tflag = 0; #if defined(KERBEROS_TGT_PASSING) || defined(AFS) while ((ch = getopt(argc, argv, "kdfprtvBCc:i:P:")) != EOF) #else while ((ch = getopt(argc, argv, "dfprtvBCc:i:P:")) != EOF) #endif switch(ch) { /* User-visible flags. */ case 'p': pflag = 1; break; case 'P': port = optarg; break; case 'r': iamrecursive = 1; break; /* Server options. */ #if defined(KERBEROS_TGT_PASSING) || defined(AFS) case 'k': nofwd = 1; break; #endif case 'd': targetshouldbedirectory = 1; break; case 'f': /* "from" */ iamremote = 1; fflag = 1; break; case 't': /* "to" */ iamremote = 1; tflag = 1; break; case 'c': cipher = optarg; break; case 'i': identity = optarg; break; case 'v': verbose = 1; break; case 'B': batchmode = 1; break; case 'C': compress = 1; break; case '?': default: usage(); } argc -= optind; argv += optind; if ((pwd = getpwuid(userid = getuid())) == NULL) fatal("unknown user %d", (int)userid); 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 ? " -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); } 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; 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 ? " -v" : "", suser, host, cmd, src, tuser ? tuser : "", tuser ? "@" : "", thost, targ); } else (void)sprintf(bp, "exec %s%s -x -o'FallBackToRsh no' -n %s %s %s '%s%s%s:%s'", SSH_PROGRAM, verbose ? " -v" : "", argv[i], cmd, src, tuser ? tuser : "", tuser ? "@" : "", thost, targ); if (verbose) 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 = thost; if (do_cmd(host, tuser, bp, &remin, &remout) < 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) 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; } len = strlen(src) + CMDNEEDS + 20; bp = xmalloc(len); (void)sprintf(bp, "%s -f %s", cmd, src); if (do_cmd(host, suser, bp, &remin, &remout) < 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]; 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; 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)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) { fprintf(stderr, "Sending file modes: %s", buf); fflush(stderr); } (void)write(remout, buf, strlen(buf)); if (response() < 0) goto next; if ((bp = allocbuf(&buffer, fd, 2048)) == NULL) { next: (void)close(fd); continue; } /* 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 = read(fd, bp->buf, amt); if (result != amt) haderr = result >= 0 ? EIO : errno; } if (haderr) (void)write(remout, bp->buf, amt); else { result = write(remout, bp->buf, amt); if (result != amt) haderr = result >= 0 ? EIO : errno; } } if (close(fd) < 0 && !haderr) haderr = errno; if (!haderr) (void)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)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) fprintf(stderr, "Entering directory: %s", path); (void)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)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; int setimes, size, targisdir, wrerrno = 0; char ch, *cp, *np, *targ, *why, *vect[1], buf[2048]; struct utimbuf ut; int dummy_usec; #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)write(remout, "", 1); if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode)) targisdir = 1; for (first = 1;; first = 0) { cp = buf; if (read(remin, cp, 1) <= 0) return; if (*cp++ == '\n') SCREWUP("unexpected "); do { if (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)write(STDERR_FILENO, buf + 1, strlen(buf + 1)); if (buf[0] == '\02') exit(1); ++errs; continue; } if (buf[0] == 'E') { (void)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(ut.modtime); if (*cp++ != ' ') SCREWUP("mtime.sec not delimited"); getnum(dummy_usec); if (*cp++ != ' ') SCREWUP("mtime.usec not delimited"); getnum(ut.actime); if (*cp++ != ' ') SCREWUP("atime.sec not delimited"); getnum(dummy_usec); if (*cp++ != '\0') SCREWUP("atime.usec not delimited"); (void)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; 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 (utime(np, &ut) < 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)write(remout, "", 1); if ((bp = allocbuf(&buffer, ofd, 4096)) == NULL) { (void)close(ofd); continue; } cp = bp->buf; wrerr = NO; 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 <= 0) { run_err("%s", j ? strerror(errno) : "dropped connection"); exit(1); } amt -= j; cp += j; } while (amt > 0); if (count == bp->cnt) { /* Keep reading so we stay sync'd up. */ if (wrerr == NO) { j = write(ofd, bp->buf, count); if (j != count) { wrerr = YES; wrerrno = j >= 0 ? EIO : errno; } } count = 0; cp = bp->buf; } } if (count != 0 && wrerr == NO && (j = 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) #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)); } (void)close(ofd); (void)response(); if (setimes && wrerr == NO) { setimes = 0; if (utime(np, &ut) < 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)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 (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 (read(remin, &ch, sizeof(ch)) != sizeof(ch)) lostconn(0); *cp++ = ch; } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n'); if (!iamremote) (void)write(STDERR_FILENO, rbuf, cp - rbuf); ++errs; if (resp == 1) return (-1); exit(1); } /* NOTREACHED */ } void usage() { (void)fprintf(stderr, "usage: scp [-p] f1 f2; or: scp [-pr] 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); } /* Stuff below is from BSD rcp util.c. */ /*- * Copyright (c) 1992, 1993 * 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. * * $Id: scp.c,v 1.1 1999/09/26 20:53:37 deraadt Exp $ */ char * colon(cp) char *cp; { if (*cp == ':') /* Leading colon is part of file name. */ return (0); for (; *cp; ++cp) { if (*cp == ':') 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 != '-') goto bad; } while (*++cp); return (1); bad: fprintf(stderr, "%s: invalid user name", cp0); return (0); } BUF * allocbuf(bp, fd, blksize) BUF *bp; int fd, blksize; { size_t size; #ifdef HAVE_ST_BLKSIZE 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; #else /* HAVE_ST_BLKSIZE */ size = blksize; #endif /* HAVE_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); }