mirror of
https://github.com/sheumann/hush.git
synced 2024-07-15 15:29:07 +00:00
d921b2ecc0
things like xasprintf() into xfuncs.c, remove xprint_file_by_name() (it only had one user), clean up lots of #includes... General cleanup pass. What I've been doing for the last couple days. And it conflicts! I've removed httpd.c from this checkin due to somebody else touching that file. It builds for me. I have to catch a bus. (Now you know why I'm looking forward to Mercurial.)
108 lines
3.5 KiB
C
108 lines
3.5 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
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*/
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#include "libbb.h"
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#include "unarchive.h"
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void data_extract_all(archive_handle_t *archive_handle)
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{
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file_header_t *file_header = archive_handle->file_header;
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int dst_fd;
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int res;
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if (archive_handle->flags & ARCHIVE_CREATE_LEADING_DIRS) {
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char *name = xstrdup(file_header->name);
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bb_make_directory (dirname(name), -1, FILEUTILS_RECUR);
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free(name);
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}
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/* Check if the file already exists */
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if (archive_handle->flags & ARCHIVE_EXTRACT_UNCONDITIONAL) {
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/* Remove the existing entry if it exists */
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if (((file_header->mode & S_IFMT) != S_IFDIR) && (unlink(file_header->name) == -1) && (errno != ENOENT)) {
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bb_perror_msg_and_die("Couldnt remove old file");
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}
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}
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else if (archive_handle->flags & ARCHIVE_EXTRACT_NEWER) {
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/* Remove the existing entry if its older than the extracted entry */
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struct stat statbuf;
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if (lstat(file_header->name, &statbuf) == -1) {
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if (errno != ENOENT) {
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bb_perror_msg_and_die("Couldnt stat old file");
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}
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}
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else if (statbuf.st_mtime <= file_header->mtime) {
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if (!(archive_handle->flags & ARCHIVE_EXTRACT_QUIET)) {
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bb_error_msg("%s not created: newer or same age file exists", file_header->name);
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}
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data_skip(archive_handle);
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return;
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}
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else if ((unlink(file_header->name) == -1) && (errno != EISDIR)) {
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bb_perror_msg_and_die("Couldnt remove old file %s", file_header->name);
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}
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}
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/* Handle hard links separately
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* We identified hard links as regular files of size 0 with a symlink */
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if (S_ISREG(file_header->mode) && (file_header->link_name) && (file_header->size == 0)) {
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/* hard link */
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res = link(file_header->link_name, file_header->name);
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if ((res == -1) && !(archive_handle->flags & ARCHIVE_EXTRACT_QUIET)) {
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bb_perror_msg("Couldnt create hard link");
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}
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} else {
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/* Create the filesystem entry */
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switch(file_header->mode & S_IFMT) {
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case S_IFREG: {
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/* Regular file */
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dst_fd = xopen(file_header->name, O_WRONLY | O_CREAT | O_EXCL);
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bb_copyfd_size(archive_handle->src_fd, dst_fd, file_header->size);
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close(dst_fd);
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break;
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}
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case S_IFDIR:
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res = mkdir(file_header->name, file_header->mode);
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if ((errno != EISDIR) && (res == -1) && !(archive_handle->flags & ARCHIVE_EXTRACT_QUIET)) {
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bb_perror_msg("extract_archive: %s", file_header->name);
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}
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break;
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case S_IFLNK:
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/* Symlink */
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res = symlink(file_header->link_name, file_header->name);
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if ((res == -1) && !(archive_handle->flags & ARCHIVE_EXTRACT_QUIET)) {
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bb_perror_msg("Cannot create symlink from %s to '%s'", file_header->name, file_header->link_name);
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}
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break;
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case S_IFSOCK:
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case S_IFBLK:
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case S_IFCHR:
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case S_IFIFO:
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res = mknod(file_header->name, file_header->mode, file_header->device);
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if ((res == -1) && !(archive_handle->flags & ARCHIVE_EXTRACT_QUIET)) {
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bb_perror_msg("Cannot create node %s", file_header->name);
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}
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break;
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default:
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bb_error_msg_and_die("Unrecognised file type");
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}
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}
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if (!(archive_handle->flags & ARCHIVE_NOPRESERVE_OWN)) {
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lchown(file_header->name, file_header->uid, file_header->gid);
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}
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if (!(archive_handle->flags & ARCHIVE_NOPRESERVE_PERM) &&
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(file_header->mode & S_IFMT) != S_IFLNK)
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{
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chmod(file_header->name, file_header->mode);
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}
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if (archive_handle->flags & ARCHIVE_PRESERVE_DATE) {
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struct utimbuf t;
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t.actime = t.modtime = file_header->mtime;
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utime(file_header->name, &t);
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}
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}
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