diff options
Diffstat (limited to 'config/nsinstall.c')
| -rw-r--r-- | config/nsinstall.c | 411 |
1 files changed, 411 insertions, 0 deletions
diff --git a/config/nsinstall.c b/config/nsinstall.c new file mode 100644 index 0000000000..363ae3eefd --- /dev/null +++ b/config/nsinstall.c @@ -0,0 +1,411 @@ +/* -*- 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 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ +/* +** 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; +} |