text: /* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
  /* ***** BEGIN LICENSE BLOCK *****
   * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   *
   * The contents of this file are subject to the Mozilla Public License Version
   * 1.1 (the "License"); you may not use this file except in compliance with
   * the License. You may obtain a copy of the License at
   * http://www.mozilla.org/MPL/
   *
   * Software distributed under the License is distributed on an "AS IS" basis,
   * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
   * for the specific language governing rights and limitations under the
   * License.
   *
   * The Original Code is mozilla.org code.
   *
   * The Initial Developer of the Original Code is
   * Netscape Communications Corporation.
   * Portions created by the Initial Developer are Copyright (C) 1998
   * the Initial Developer. All Rights Reserved.
   *
   * Contributor(s):
   *
   * Alternatively, the contents of this file may be used under the terms of
   * either of the GNU General Public License Version 2 or later (the "GPL"),
   * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
   * in which case the provisions of the GPL or the LGPL are applicable instead
   * of those above. If you wish to allow use of your version of this file only
   * under the terms of either the GPL or the LGPL, and not to allow others to
   * use your version of this file under the terms of the MPL, indicate your
   * decision by deleting the provisions above and replace them with the notice
   * and other provisions required by the GPL or the LGPL. If you do not delete
   * the provisions above, a recipient may use your version of this file under
   * the terms of any one of the MPL, the GPL or the LGPL.
   *
   * ***** END LICENSE BLOCK ***** */
  /*
  ** Netscape portable install command.
  **
  ** Brendan Eich, 7/20/95
  */
  #include <stdio.h>  /* OSF/1 requires this before grp.h, so put it first */
  #include <assert.h>
  #include <fcntl.h>
  #include <errno.h>
  #include <dirent.h>
  #include <limits.h>
  #include <grp.h>
  #include <pwd.h>
  #include <stdio.h>
  #include <stdlib.h>
  #include <string.h>
  #include <unistd.h>
  #include <utime.h>
  #include <sys/types.h>
  #include <sys/stat.h>
  #include "pathsub.h"
  
  #ifdef HAVE_GETOPT_H
  #include <getopt.h>
  #endif
  
  #ifdef SUNOS4
  #include "sunos4.h"
  #endif
  
  #ifdef NEXTSTEP
  #include <bsd/libc.h>
  #endif
  
  #ifdef __QNX__
  #include <unix.h>
  #endif
  
  #ifdef NEED_S_ISLNK
  #if !defined(S_ISLNK) && defined(S_IFLNK)
  #define S_ISLNK(a)	(((a) & S_IFMT) == S_IFLNK)
  #endif
  #endif
  
  #ifndef _DIRECTORY_SEPARATOR
  #define _DIRECTORY_SEPARATOR "/"
  #endif /* _DIRECTORY_SEPARATOR */
  
  #ifdef NEED_FCHMOD_PROTO
  extern int fchmod(int fildes, mode_t mode);
  #endif
  
  static void
  usage(void)
  {
      fprintf(stderr,
  	"usage: %s [-C cwd] [-L linkprefix] [-m mode] [-o owner] [-g group]\n"
  	"       %*s [-DdltR] file [file ...] directory\n",
  	program, (int) strlen(program), "");
      exit(2);
  }
  
  static int
  mkdirs(char *path, mode_t mode)
  {
      char *cp;
      struct stat sb;
      int res;
      int l;
  
      /* strip trailing "/." */
      l = strlen(path);
      if(l > 1 && path[l - 1] == '.' && path[l - 2] == '/')
          path[l - 2] = 0;
  
      while (*path == '/' && path[1] == '/')
  	path++;
      for (cp = strrchr(path, '/'); cp && cp != path && *(cp - 1) == '/'; cp--);
      if (cp && cp != path) {
  	*cp = '\0';
  	if ((lstat(path, &sb) < 0 || !S_ISDIR(sb.st_mode)) &&
  	    mkdirs(path, mode) < 0) {
  	    return -1;
  	}
  	*cp = '/';
      }
      
      res = mkdir(path, mode);
      if ((res != 0) && (errno == EEXIST))
        return 0;
      else
        return res;
  }
  
  static uid_t
  touid(char *owner)
  {
      struct passwd *pw;
      uid_t uid;
      char *cp;
  
      pw = getpwnam(owner);
      if (pw)
  	return pw->pw_uid;
      uid = strtol(owner, &cp, 0);
      if (uid == 0 && cp == owner)
  	fail("cannot find uid for %s", owner);
      return uid;
  }
  
  static gid_t
  togid(char *group)
  {
      struct group *gr;
      gid_t gid;
      char *cp;
  
      gr = getgrnam(group);
      if (gr)
  	return gr->gr_gid;
      gid = strtol(group, &cp, 0);
      if (gid == 0 && cp == group)
  	fail("cannot find gid for %s", group);
      return gid;
  }
  
  static void
  copyfile( char *name, char *toname, mode_t mode, char *group, char *owner,
            int dotimes, uid_t uid, gid_t gid )
  {
    int fromfd, tofd = -1, cc, wc, exists;
    char buf[BUFSIZ], *bp;
    struct stat sb, tosb;
    struct utimbuf utb;
  
    exists = (lstat(toname, &tosb) == 0);
  
    fromfd = open(name, O_RDONLY);
    if (fromfd < 0 || fstat(fromfd, &sb) < 0)
      fail("cannot access %s", name);
    if (exists) {
      if (S_ISREG(tosb.st_mode)) {
        /* See if we can open it. This is more reliable than 'access'. */
        tofd = open(toname, O_CREAT | O_WRONLY, 0666);
      }
      if (tofd < 0) {
        (void) (S_ISDIR(tosb.st_mode) ? rmdir : unlink)(toname);
      }
    }
    if (tofd < 0) {
      tofd = open(toname, O_CREAT | O_WRONLY, 0666);
      if (tofd < 0)
        fail("cannot create %s", toname);
    }
  
    bp = buf;
    while ((cc = read(fromfd, bp, sizeof buf)) > 0)
    {
      while ((wc = write(tofd, bp, (unsigned int)cc)) > 0)
      {
        if ((cc -= wc) == 0)
          break;
        bp += wc;
      }
      if (wc < 0)
        fail("cannot write to %s", toname);
    }
    if (cc < 0)
      fail("cannot read from %s", name);
  
    if (ftruncate(tofd, sb.st_size) < 0)
      fail("cannot truncate %s", toname);
  #if !defined(VMS)
    if (dotimes)
    {
      utb.actime = sb.st_atime;
      utb.modtime = sb.st_mtime;
      if (utime(toname, &utb) < 0)
        fail("cannot set times of %s", toname);
    }
  #ifdef HAVE_FCHMOD
    if (fchmod(tofd, mode) < 0)
  #else
    if (chmod(toname, mode) < 0)
  #endif
      fail("cannot change mode of %s", toname);
  #endif
    if ((owner || group) && fchown(tofd, uid, gid) < 0)
      fail("cannot change owner of %s", toname);
  
    /* Must check for delayed (NFS) write errors on close. */
    if (close(tofd) < 0)
      fail("cannot write to %s", toname);
    close(fromfd);
  #if defined(VMS)
    if (chmod(toname, (mode & (S_IREAD | S_IWRITE))) < 0)
      fail("cannot change mode of %s", toname);
    if (dotimes)
    {
      utb.actime = sb.st_atime;
      utb.modtime = sb.st_mtime;
      if (utime(toname, &utb) < 0)
        fail("cannot set times of %s", toname);
    }
  #endif
  }
  
  static void
  copydir( char *from, char *to, mode_t mode, char *group, char *owner,
           int dotimes, uid_t uid, gid_t gid)
  {
    int i;
    DIR *dir;
    struct dirent *ep;
    struct stat sb;
    char *base, *destdir, *direntry, *destentry;
  
    base = xbasename(from);
  
    /* create destination directory */
    destdir = xmalloc((unsigned int)(strlen(to) + 1 + strlen(base) + 1));
    sprintf(destdir, "%s%s%s", to, _DIRECTORY_SEPARATOR, base);
    if (mkdirs(destdir, mode) != 0) {
      fail("cannot make directory %s\n", destdir);
      free(destdir);
      return;
    }
  
    if (!(dir = opendir(from))) {
      fail("cannot open directory %s\n", from);
      free(destdir);
      return;
    }
  
    direntry = xmalloc((unsigned int)PATH_MAX);
    destentry = xmalloc((unsigned int)PATH_MAX);
  
    while ((ep = readdir(dir)))
    {
      if (strcmp(ep->d_name, ".") == 0 || strcmp(ep->d_name, "..") == 0)
        continue;
  
      sprintf(direntry, "%s/%s", from, ep->d_name);
      sprintf(destentry, "%s%s%s", destdir, _DIRECTORY_SEPARATOR, ep->d_name);
  
      if (stat(direntry, &sb) == 0 && S_ISDIR(sb.st_mode))
        copydir( direntry, destdir, mode, group, owner, dotimes, uid, gid );
      else
        copyfile( direntry, destentry, mode, group, owner, dotimes, uid, gid );
    }
  
    free(destdir);
    free(direntry);
    free(destentry);
    closedir(dir);
  }
  
  int
  main(int argc, char **argv)
  {
      int onlydir, dodir, dolink, dorelsymlink, dotimes, opt, len, lplen, tdlen, bnlen, exists, fromfd, tofd, cc, wc;
      mode_t mode = 0755;
      char *linkprefix, *owner, *group, *cp, *cwd, *todir, *toname, *name, *base, *linkname, *bp, buf[BUFSIZ];
      uid_t uid;
      gid_t gid;
      struct stat sb, tosb, fromsb;
      struct utimbuf utb;
  
      program = argv[0];
      cwd = linkname = linkprefix = owner = group = 0;
      onlydir = dodir = dolink = dorelsymlink = dotimes = lplen = 0;
  
      while ((opt = getopt(argc, argv, "C:DdlL:Rm:o:g:t")) != EOF) {
  	switch (opt) {
  	  case 'C':
  	    cwd = optarg;
  	    break;
  	  case 'D':
  	    onlydir = 1;
  	    break;
  	  case 'd':
  	    dodir = 1;
  	    break;
  	  case 'l':
  	    dolink = 1;
  	    break;
  	  case 'L':
  	    linkprefix = optarg;
  	    lplen = strlen(linkprefix);
  	    dolink = 1;
  	    break;
       case 'R':
  	    dolink = dorelsymlink = 1;
  	    break;
  	  case 'm':
  	    mode = strtoul(optarg, &cp, 8);
  	    if (mode == 0 && cp == optarg)
  		usage();
  	    break;
  	  case 'o':
  	    owner = optarg;
  	    break;
  	  case 'g':
  	    group = optarg;
  	    break;
  	  case 't':
  	    dotimes = 1;
  	    break;
  	  default:
  	    usage();
  	}
      }
  
      argc -= optind;
      argv += optind;
      if (argc < 2 - onlydir)
  	usage();
  
      todir = argv[argc-1];
      if ((stat(todir, &sb) < 0 || !S_ISDIR(sb.st_mode)) &&
  	mkdirs(todir, 0777) < 0) {
  	fail("cannot make directory %s", todir);
      }
      if (onlydir)
  	return 0;
  
      if (!cwd) {
  #ifndef NEEDS_GETCWD
  #ifndef GETCWD_CANT_MALLOC
  	cwd = getcwd(0, PATH_MAX);
  #else
  	cwd = malloc(PATH_MAX + 1);
  	cwd = getcwd(cwd, PATH_MAX);
  #endif
  #else
  	cwd = malloc(PATH_MAX + 1);
  	cwd = getwd(cwd);
  #endif
      }
  
      xchdir(todir);
  #ifndef NEEDS_GETCWD
  #ifndef GETCWD_CANT_MALLOC
      todir = getcwd(0, PATH_MAX);
  #else
      todir = malloc(PATH_MAX + 1);
      todir = getcwd(todir, PATH_MAX);
  #endif
  #else
      todir = malloc(PATH_MAX + 1);
      todir = getwd(todir);
  #endif
      tdlen = strlen(todir);
      xchdir(cwd);
      tdlen = strlen(todir);
  
      uid = owner ? touid(owner) : (uid_t)(-1);
      gid = group ? togid(group) : (gid_t)(-1);
  
      while (--argc > 0) {
  	name = *argv++;
  	len = strlen(name);
  	base = xbasename(name);
  	bnlen = strlen(base);
  	toname = xmalloc((unsigned int)(tdlen + 1 + bnlen + 1));
  	sprintf(toname, "%s%s%s", todir, _DIRECTORY_SEPARATOR, base);
  	exists = (lstat(toname, &tosb) == 0);
  
  	if (dodir) {
  	    /* -d means create a directory, always */
  	    if (exists && !S_ISDIR(tosb.st_mode)) {
  		(void) unlink(toname);
  		exists = 0;
  	    }
  	    if (!exists && mkdir(toname, mode) < 0)
  		fail("cannot make directory %s", toname);
  	    if ((owner || group) && chown(toname, uid, gid) < 0)
  		fail("cannot change owner of %s", toname);
  	} else if (dolink) {
              if (access(name, R_OK) != 0) {
                  fail("cannot access %s", name);
              }
  	    if (*name == '/') {
  		/* source is absolute pathname, link to it directly */
  		linkname = 0;
  	    } else {
  		if (linkprefix) {
  		    /* -L implies -l and prefixes names with a $cwd arg. */
  		    len += lplen + 1;
  		    linkname = xmalloc((unsigned int)(len + 1));
  		    sprintf(linkname, "%s/%s", linkprefix, name);
  		} else if (dorelsymlink) {
  		    /* Symlink the relative path from todir to source name. */
  		    linkname = xmalloc(PATH_MAX);
  
  		    if (*todir == '/') {
  			/* todir is absolute: skip over common prefix. */
  			lplen = relatepaths(todir, cwd, linkname);
  			strcpy(linkname + lplen, name);
  		    } else {
  			/* todir is named by a relative path: reverse it. */
  			reversepath(todir, name, len, linkname);
  			xchdir(cwd);
  		    }
  
  		    len = strlen(linkname);
  		}
  		name = linkname;
  	    }
  
  	    /* Check for a pre-existing symlink with identical content. */
  	    if ((exists && (!S_ISLNK(tosb.st_mode) ||
  						readlink(toname, buf, sizeof buf) != len ||
  						strncmp(buf, name, (unsigned int)len) != 0)) || 
  			((stat(name, &fromsb) == 0) && 
  			 (fromsb.st_mtime > tosb.st_mtime))) {
  		(void) (S_ISDIR(tosb.st_mode) ? rmdir : unlink)(toname);
  		exists = 0;
  	    }
  	    if (!exists && symlink(name, toname) < 0)
  		fail("cannot make symbolic link %s", toname);
  #ifdef HAVE_LCHOWN
  	    if ((owner || group) && lchown(toname, uid, gid) < 0)
  		fail("cannot change owner of %s", toname);
  #endif
  
  	    if (linkname) {
  		free(linkname);
  		linkname = 0;
  	    }
  	} else {
  	    /* Copy from name to toname, which might be the same file. */
        if( stat(name, &sb) == 0 && S_IFDIR & sb.st_mode )
        {
          /* then is directory: must explicitly create destination dir  */
          /*  and manually copy files over                              */
          copydir( name, todir, mode, group, owner, dotimes, uid, gid );
        } 
        else
        {
          copyfile(name, toname, mode, group, owner, dotimes, uid, gid);
        }
      }
  
  	free(toname);
      }
  
      free(cwd);
      free(todir);
      return 0;
  }
  