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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
/*
** 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) {
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;
mode_t mode = 0755;
char *linkprefix, *owner, *group, *cp, *cwd, *todir, *toname, *name, *base,
*linkname, buf[BUFSIZ];
uid_t uid;
gid_t gid;
struct stat sb, tosb, fromsb;
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':
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 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;
}