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-rw-r--r--archival/libunarchive/unarchive.c263
1 files changed, 0 insertions, 263 deletions
diff --git a/archival/libunarchive/unarchive.c b/archival/libunarchive/unarchive.c
deleted file mode 100644
index 03e3c3e..0000000
--- a/archival/libunarchive/unarchive.c
+++ /dev/null
@@ -1,263 +0,0 @@
-/*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Library General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- */
-
-#include <errno.h>
-#include <fnmatch.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <utime.h>
-#include <sys/wait.h>
-#include <signal.h>
-#include "unarchive.h"
-#include "busybox.h"
-
-/* Extract the data postioned at src_stream to either filesystem, stdout or
- * buffer depending on the value of 'function' which is defined in libbb.h
- *
- * prefix doesnt have to be just a directory, it may prefix the filename as well.
- *
- * e.g. '/var/lib/dpkg/info/dpkg.' will extract all files to the base bath
- * '/var/lib/dpkg/info/' and all files/dirs created in that dir will have
- * 'dpkg.' as their prefix
- *
- * For this reason if prefix does point to a dir then it must end with a
- * trailing '/' or else the last dir will be assumed to be the file prefix
- */
-char *extract_archive(FILE *src_stream, FILE *out_stream, const file_header_t *file_entry,
- const int function, const char *prefix)
-{
- FILE *dst_stream = NULL;
- char *full_name = NULL;
- char *buffer = NULL;
- struct utimbuf t;
-
- /* prefix doesnt have to be a proper path it may prepend
- * the filename as well */
- if (prefix != NULL) {
- /* strip leading '/' in filename to extract as prefix may not be dir */
- /* Cant use concat_path_file here as prefix might not be a directory */
- char *path = file_entry->name;
- if (strncmp("./", path, 2) == 0) {
- path += 2;
- if (strlen(path) == 0) {
- return(NULL);
- }
- }
- bb_asprintf(&full_name, "%s%s", prefix, path);
- } else {
- full_name = file_entry->name;
- }
- if (function & extract_to_stdout) {
- if (S_ISREG(file_entry->mode)) {
- copy_file_chunk(src_stream, out_stream, file_entry->size);
- archive_offset += file_entry->size;
- }
- }
- else if (function & extract_one_to_buffer) {
- if (S_ISREG(file_entry->mode)) {
- buffer = (char *) xmalloc(file_entry->size + 1);
- fread(buffer, 1, file_entry->size, src_stream);
- buffer[file_entry->size] = '\0';
- archive_offset += file_entry->size;
- return(buffer);
- }
- }
- else if (function & extract_all_to_fs) {
- struct stat oldfile;
- int stat_res;
- stat_res = lstat (full_name, &oldfile);
- if (stat_res == 0) { /* The file already exists */
- if ((function & extract_unconditional) || (oldfile.st_mtime < file_entry->mtime)) {
- if (!S_ISDIR(oldfile.st_mode)) {
- unlink(full_name); /* Directories might not be empty etc */
- }
- } else {
- if ((function & extract_quiet) != extract_quiet) {
- error_msg("%s not created: newer or same age file exists", file_entry->name);
- }
- seek_sub_file(src_stream, file_entry->size);
- return (NULL);
- }
- }
- if (function & extract_create_leading_dirs) { /* Create leading directories with default umask */
- char *buf, *parent;
- buf = xstrdup(full_name);
- parent = dirname(buf);
- if (make_directory (parent, -1, FILEUTILS_RECUR) != 0) {
- if ((function & extract_quiet) != extract_quiet) {
- error_msg("couldn't create leading directories");
- }
- }
- free (buf);
- }
- switch(file_entry->mode & S_IFMT) {
- case S_IFREG:
- if (file_entry->link_name) { /* Found a cpio hard link */
- if (link(file_entry->link_name, full_name) != 0) {
- if ((function & extract_quiet) != extract_quiet) {
- perror_msg("Cannot link from %s to '%s'",
- file_entry->name, file_entry->link_name);
- }
- }
- } else {
- if ((dst_stream = wfopen(full_name, "w")) == NULL) {
- seek_sub_file(src_stream, file_entry->size);
- return NULL;
- }
- archive_offset += file_entry->size;
- if (file_entry->extract_func) file_entry->extract_func(src_stream, dst_stream);
- else copy_file_chunk(src_stream, dst_stream, file_entry->size);
- fclose(dst_stream);
- }
- break;
- case S_IFDIR:
- if (stat_res != 0) {
- if (mkdir(full_name, file_entry->mode) < 0) {
- if ((function & extract_quiet) != extract_quiet) {
- perror_msg("extract_archive: %s", full_name);
- }
- }
- }
- break;
- case S_IFLNK:
- if (symlink(file_entry->link_name, full_name) < 0) {
- if ((function & extract_quiet) != extract_quiet) {
- perror_msg("Cannot create symlink from %s to '%s'", file_entry->name, file_entry->link_name);
- }
- return NULL;
- }
- break;
- case S_IFSOCK:
- case S_IFBLK:
- case S_IFCHR:
- case S_IFIFO:
- if (mknod(full_name, file_entry->mode, file_entry->device) == -1) {
- if ((function & extract_quiet) != extract_quiet) {
- perror_msg("Cannot create node %s", file_entry->name);
- }
- return NULL;
- }
- break;
- }
-
- /* Changing a symlink's properties normally changes the properties of the
- * file pointed to, so dont try and change the date or mode, lchown does
- * does the right thing, but isnt available in older versions of libc */
- if (S_ISLNK(file_entry->mode)) {
-#if (__GLIBC__ > 2) && (__GLIBC_MINOR__ > 1)
- lchown(full_name, file_entry->uid, file_entry->gid);
-#endif
- } else {
- if (function & extract_preserve_date) {
- t.actime = file_entry->mtime;
- t.modtime = file_entry->mtime;
- utime(full_name, &t);
- }
- chmod(full_name, file_entry->mode);
- chown(full_name, file_entry->uid, file_entry->gid);
- }
- } else {
- /* If we arent extracting data we have to skip it,
- * if data size is 0 then then just do it anyway
- * (saves testing for it) */
- seek_sub_file(src_stream, file_entry->size);
- }
-
- /* extract_list and extract_verbose_list can be used in conjunction
- * with one of the above four extraction functions, so do this seperately */
- if (function & extract_verbose_list) {
- fprintf(out_stream, "%s %d/%d %8d %s ", mode_string(file_entry->mode),
- file_entry->uid, file_entry->gid,
- (int) file_entry->size, time_string(file_entry->mtime));
- }
- if ((function & extract_list) || (function & extract_verbose_list)){
- /* fputs doesnt add a trailing \n, so use fprintf */
- fprintf(out_stream, "%s\n", full_name);
- }
-
- if (prefix != NULL) {
- free(full_name);
- }
-
- return(NULL); /* Maybe we should say if failed */
-}
-
-char *unarchive(FILE *src_stream, FILE *out_stream, file_header_t *(*get_headers)(FILE *),
- const int extract_function, const char *prefix, char **include_name, char **exclude_name)
-{
- file_header_t *file_entry;
- int extract_flag = TRUE;
- int i;
- char *buffer = NULL;
-#ifdef CONFIG_FEATURE_UNARCHIVE_TAPE
- int pid, tape_pipe[2];
-
- if (pipe(tape_pipe) != 0) error_msg_and_die("Can't create pipe\n");
- if ((pid = fork()) == -1) error_msg_and_die("Fork failed\n");
- if (pid==0) { /* child process */
- close(tape_pipe[0]); /* We don't wan't to read from the pipe */
- copyfd(fileno(src_stream), tape_pipe[1]);
- close(tape_pipe[1]); /* Send EOF */
- exit(0);
- /* notreached */
- }
- close(tape_pipe[1]); /* Don't want to write down the pipe */
- fclose(src_stream);
- src_stream = fdopen(tape_pipe[0], "r");
-#endif
- archive_offset = 0;
- while ((file_entry = get_headers(src_stream)) != NULL) {
-
- if (include_name != NULL) {
- extract_flag = FALSE;
- for(i = 0; include_name[i] != 0; i++) {
- if (fnmatch(include_name[i], file_entry->name, FNM_LEADING_DIR) == 0) {
- extract_flag = TRUE;
- break;
- }
- }
- } else {
- extract_flag = TRUE;
- }
-
- /* If the file entry is in the exclude list dont extract it */
- if (exclude_name != NULL) {
- for(i = 0; exclude_name[i] != 0; i++) {
- if (fnmatch(exclude_name[i], file_entry->name, FNM_LEADING_DIR) == 0) {
- extract_flag = FALSE;
- break;
- }
- }
- }
-
- if (extract_flag) {
- buffer = extract_archive(src_stream, out_stream, file_entry, extract_function, prefix);
- } else {
- /* seek past the data entry */
- seek_sub_file(src_stream, file_entry->size);
- }
- free(file_entry->name);
- free(file_entry->link_name);
- free(file_entry);
- }
-#ifdef CONFIG_FEATURE_UNARCHIVE_TAPE
- kill(pid, SIGTERM);
- waitpid(pid, NULL, 0);
-#endif
- return(buffer);
-}
generated by cgit v1.1 at 2024-12-26 15:28:20 +0000