/*	$OpenBSD: cp.c,v 1.43 2016/03/07 18:56:33 tb Exp $	*/

/*	$NetBSD: cp.c,v 1.14 1995/09/07 06:14:51 jtc Exp $	*/

/*

 * Copyright (c) 1988, 1993, 1994

 *	The Regents of the University of California.  All rights reserved.

 *

 * This code is derived from software contributed to Berkeley by

 * David Hitz of Auspex Systems Inc.

 *

 * 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. 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.

 */

/*

 * Cp copies source files to target files.

 *

 * The global PATH_T structure "to" always contains the path to the

 * current target file.  Since fts(3) does not change directories,

 * this path can be either absolute or dot-relative.

 *

 * The basic algorithm is to initialize "to" and use fts(3) to traverse

 * the file hierarchy rooted in the argument list.  A trivial case is the

 * case of 'cp file1 file2'.  The more interesting case is the case of

 * 'cp file1 file2 ... fileN dir' where the hierarchy is traversed and the

 * path (relative to the root of the traversal) is appended to dir (stored

 * in "to") to form the final target path.

 */

#include <sys/types.h>

#include <sys/stat.h>

#include <sys/mman.h>

#include <sys/time.h>

#include <dirent.h>

#include <err.h>

#include <errno.h>

#include <fcntl.h>

#include <fts.h>

#include <locale.h>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <unistd.h>

#include <limits.h>

#include "extern.h"

#define	fts_dne(_x)	(_x->fts_pointer != NULL)

PATH_T to = { to.p_path, "" };

uid_t myuid;

int Rflag, fflag, iflag, pflag, rflag;

mode_t myumask;

enum op { FILE_TO_FILE, FILE_TO_DIR, DIR_TO_DNE };

int copy(char *[], enum op, int);

char *find_last_component(char *);

int

main(int argc, char *argv[])

	struct stat to_stat, tmp_stat;

	enum op type;

	int Hflag, Lflag, Pflag, ch, fts_options, r;

	char *target;

		case 'H':

		case 'L':

		case 'P':

		case 'R':

		case 'f':

		case 'i':

		case 'p':

		case 'r':

		default:

			break;

		}

	/*

	 * Unfortunately, -R will use mkfifo & mknod;

	 * -p will use fchown, fchmod, lchown, fchflags..

	 */

		    "the -R and -r options may not be specified together.");

	"the -H, -L, and -P options may not be specified with the -r option.");

	}

		}

	} else {

	}

	/* Copy the umask for explicit mode setting. */

	/* Save the target base in "to". */

	}

	/* Set end of argument list for fts(3). */

	/*

	 * Cp has two distinct cases:

	 *

	 * cp [-R] source target

	 * cp [-R] source1 ... sourceN directory

	 *

	 * In both cases, source can be either a file or a directory.

	 *

	 * In (1), the target becomes a copy of the source. That is, if the

	 * source is a file, the target will be a file, and likewise for

	 * directories.

	 *

	 * In (2), the real target is not directory, but "directory/source".

	 */

		/*

		 * Case (1).  Target is not a directory.

		 */

		/*

		 * Need to detect the case:

		 *	cp -R dir foo

		 * Where dir is a directory and foo does not exist, where

		 * we want pathname concatenations turned on but not for

		 * the initial mkdir().

		 */

			else

			else

		} else

	} else {

		/*

		 * Case (2).  Target is a directory.

		 */

	}

}

char *

find_last_component(char *path)

	char *p;

	else {

		/* Special case foo/ */

		}

	}

}

int

copy(char *argv[], enum op type, int fts_options)

	struct stat to_stat;

	FTS *ftsp;

	FTSENT *curr;

	int base, nlen, rval;

	char *p, *target_mid;

		case FTS_NS:

		case FTS_DNR:

		case FTS_ERR:

			    curr->fts_path, strerror(curr->fts_errno));

		case FTS_DC:

		}

		/*

		 * If we are in case (2) or (3) above, we need to append the

		 * source name to the target name.

		 */

			/*

			 * Need to remember the roots of traversals to create

			 * correct pathnames.  If there's a directory being

			 * copied to a non-existent directory, e.g.

			 *	cp -R a/dir noexist

			 * the resulting path name should be noexist/foo, not

			 * noexist/dir/foo (where foo is a file in dir), which

			 * is the case where the target exists.

			 *

			 * Also, check for "..".  This is for correct path

			 * concatenation for paths ending in "..", e.g.

			 *	cp -R .. /tmp

			 * Paths ending in ".." are changed to ".".  This is

			 * tricky, but seems the easiest way to fix the problem.

			 *

			 * XXX

			 * Since the first level MUST be FTS_ROOTLEVEL, base

			 * is always initialized.

			 */

					    ".."))

				} else

			}

				    to.p_path, p);

			}

		}

		/* Not an error but need to remember it happened */

			/*

			 * We use fts_pointer as a boolean to indicate that

			 * we created this directory ourselves.  We'll use

			 * this later on via the fts_dne macro to decide

			 * whether or not to set the directory mode during

			 * the post-order pass.

			 */

		} else {

			/*

			 * Set directory mode/user/times on the post-order

			 * pass.  We can't do this earlier because the mode

			 * may not allow us write permission.  Furthermore,

			 * if we set the times during the pre-order pass,

			 * they will get changed later when the directory

			 * is populated.

			 */

				/*

				 * If not -p and directory didn't exist, set

				 * it to be the same as the from directory,

				 * unmodified by the umask; arguably wrong,

				 * but it's been that way forever.

				 */

					    curr->fts_statp->st_mode);

				continue;

			}

			    to_stat.st_ino == curr->fts_statp->st_ino) {

				    to.p_path, curr->fts_path);

				continue;

			}

			    S_ISDIR(to_stat.st_mode)) {

				    to.p_path, curr->fts_path);

			}

		}

		case S_IFLNK:

			break;

		case S_IFDIR:

				    curr->fts_path);

			}

			/*

			 * If the directory doesn't exist, create the new

			 * one with the from file mode plus owner RWX bits,

			 * modified by the umask.  Trade-off between being

			 * able to write the directory (if from directory is

			 * 555) and not causing a permissions race.  If the

			 * umask blocks owner writes, we fail..

			 */

				    curr->fts_statp->st_mode | S_IRWXU) < 0)

			break;

		case S_IFBLK:

		case S_IFCHR:

			} else

			break;

		case S_IFIFO:

			} else

			break;

		case S_IFSOCK:

		default:

			break;

		}

	}

}