+++ /dev/null
-/*
- * 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 <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include "unarchive.h"
-#include "libbb.h"
-
-char *deb_extract(const char *package_filename, FILE *out_stream,
- const int extract_function, const char *prefix, const char *filename)
-{
- FILE *deb_stream;
- FILE *uncompressed_stream = NULL;
- file_header_t *ar_header = NULL;
- char **file_list = NULL;
- char *output_buffer = NULL;
- char *ared_file = NULL;
- char ar_magic[8];
- int gunzip_pid;
-
- if (filename != NULL) {
- file_list = xmalloc(sizeof(char *) * 2);
- file_list[0] = xstrdup(filename);
- file_list[1] = NULL;
- }
-
- if (extract_function & extract_control_tar_gz) {
- ared_file = xstrdup("control.tar.gz");
- }
- else if (extract_function & extract_data_tar_gz) {
- ared_file = xstrdup("data.tar.gz");
- }
-
- /* open the debian package to be worked on */
- deb_stream = wfopen(package_filename, "r");
- if (deb_stream == NULL) {
- return(NULL);
- }
- /* set the buffer size */
- setvbuf(deb_stream, NULL, _IOFBF, 0x8000);
-
- /* check ar magic */
- fread(ar_magic, 1, 8, deb_stream);
- if (strncmp(ar_magic,"!<arch>",7) != 0) {
- error_msg_and_die("invalid magic");
- }
- archive_offset = 8;
-
- while ((ar_header = get_header_ar(deb_stream)) != NULL) {
- if (strcmp(ared_file, ar_header->name) == 0) {
- /* open a stream of decompressed data */
- uncompressed_stream = gz_open(deb_stream, &gunzip_pid);
- archive_offset = 0;
- output_buffer = unarchive(uncompressed_stream, out_stream, get_header_tar, extract_function, prefix, file_list, NULL);
- }
- seek_sub_file(deb_stream, ar_header->size);
- free(ar_header->name);
- free(ar_header);
- }
- gz_close(gunzip_pid);
- fclose(deb_stream);
- fclose(uncompressed_stream);
- free(ared_file);
- if (filename != NULL) {
- free(file_list[0]);
- free(file_list);
- }
- return(output_buffer);
-}
-
+++ /dev/null
-/*
- * 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 <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include "unarchive.h"
-#include "libbb.h"
-
-struct hardlinks {
- file_header_t *entry;
- int inode;
- struct hardlinks *next;
-};
-
-file_header_t *get_header_cpio(FILE *src_stream)
-{
- file_header_t *cpio_entry = NULL;
- char cpio_header[110];
- int namesize;
- char dummy[16];
- int major, minor, nlink, inode;
- static struct hardlinks *saved_hardlinks = NULL;
- static int pending_hardlinks = 0;
-
- if (pending_hardlinks) { /* Deal with any pending hardlinks */
- struct hardlinks *tmp = saved_hardlinks, *oldtmp = NULL;
- while (tmp) {
- if (tmp->entry->link_name) { /* Found a hardlink ready to be extracted */
- cpio_entry = tmp->entry;
- if (oldtmp) oldtmp->next = tmp->next; /* Remove item from linked list */
- else saved_hardlinks = tmp->next;
- free(tmp);
- return (cpio_entry);
- }
- oldtmp = tmp;
- tmp = tmp->next;
- }
- pending_hardlinks = 0; /* No more pending hardlinks, read next file entry */
- }
-
- /* There can be padding before archive header */
- seek_sub_file(src_stream, (4 - (archive_offset % 4)) % 4);
- if (fread(cpio_header, 1, 110, src_stream) == 110) {
- archive_offset += 110;
- if (strncmp(cpio_header, "07070", 5) != 0) {
- error_msg("Unsupported format or invalid magic");
- return(NULL);
- }
- switch (cpio_header[5]) {
- case '2': /* "crc" header format */
- /* Doesnt do the crc check yet */
- case '1': /* "newc" header format */
- cpio_entry = (file_header_t *) xcalloc(1, sizeof(file_header_t));
- sscanf(cpio_header, "%6c%8x%8x%8x%8x%8x%8lx%8lx%16c%8x%8x%8x%8c",
- dummy, &inode, (unsigned int*)&cpio_entry->mode,
- (unsigned int*)&cpio_entry->uid, (unsigned int*)&cpio_entry->gid,
- &nlink, &cpio_entry->mtime, &cpio_entry->size,
- dummy, &major, &minor, &namesize, dummy);
-
- cpio_entry->name = (char *) xcalloc(1, namesize);
- fread(cpio_entry->name, 1, namesize, src_stream); /* Read in filename */
- archive_offset += namesize;
- /* Skip padding before file contents */
- seek_sub_file(src_stream, (4 - (archive_offset % 4)) % 4);
- if (strcmp(cpio_entry->name, "TRAILER!!!") == 0) {
- printf("%d blocks\n", (int) (archive_offset % 512 ? (archive_offset / 512) + 1 : archive_offset / 512)); /* Always round up */
- if (saved_hardlinks) { /* Bummer - we still have unresolved hardlinks */
- struct hardlinks *tmp = saved_hardlinks, *oldtmp = NULL;
- while (tmp) {
- error_msg("%s not created: cannot resolve hardlink", tmp->entry->name);
- oldtmp = tmp;
- tmp = tmp->next;
- free (oldtmp->entry->name);
- free (oldtmp->entry);
- free (oldtmp);
- }
- saved_hardlinks = NULL;
- pending_hardlinks = 0;
- }
- return(NULL);
- }
-
- if (S_ISLNK(cpio_entry->mode)) {
- cpio_entry->link_name = (char *) xcalloc(1, cpio_entry->size + 1);
- fread(cpio_entry->link_name, 1, cpio_entry->size, src_stream);
- archive_offset += cpio_entry->size;
- cpio_entry->size = 0; /* Stop possiable seeks in future */
- }
- if (nlink > 1 && !S_ISDIR(cpio_entry->mode)) {
- if (cpio_entry->size == 0) { /* Put file on a linked list for later */
- struct hardlinks *new = xmalloc(sizeof(struct hardlinks));
- new->next = saved_hardlinks;
- new->inode = inode;
- new->entry = cpio_entry;
- saved_hardlinks = new;
- return(get_header_cpio(src_stream)); /* Recurse to next file */
- } else { /* Found the file with data in */
- struct hardlinks *tmp = saved_hardlinks;
- pending_hardlinks = 1;
- while (tmp) {
- if (tmp->inode == inode) {
- tmp->entry->link_name = xstrdup(cpio_entry->name);
- nlink--;
- }
- tmp = tmp->next;
- }
- if (nlink > 1) error_msg("error resolving hardlink: did you create the archive with GNU cpio 2.0-2.2?");
- }
- }
- cpio_entry->device = (major << 8) | minor;
- break;
- default:
- error_msg("Unsupported format");
- return(NULL);
- }
- if (ferror(src_stream) || feof(src_stream)) {
- perror_msg("Stream error");
- return(NULL);
- }
- }
- return(cpio_entry);
-}
-
+++ /dev/null
-/* vi: set sw=4 ts=4: */
-/*
- * get_header_zip for busybox
- *
- * Copyright (C) 2001 by Laurence Anderson
- *
- * 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
- * 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 <stddef.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include "unarchive.h"
-#include "libbb.h"
-
-#define ZIP_FILEHEADER_MAGIC 0x04034b50
-#define ZIP_CDS_MAGIC 0x02014b50
-#define ZIP_CDS_END_MAGIC 0x06054b50
-#define ZIP_DD_MAGIC 0x08074b50
-
-
-enum {
- zh_version,
- zh_flags,
- zh_method,
- zh_modtime,
- zh_moddate,
- zh_crc32,
- zh_cmpsize,
- zh_ucmpsize,
- zh_filename_len,
- zh_extra_len
-};
-
-static const char fail_msg[] = "Invalid file or read error";
-
-static int le_read_int(FILE *fp, int n)
-{
- int r = 0;
- int s = 1;
- int c;
-
- archive_offset += n;
-
- do {
- if ((c = fgetc(fp)) == EOF) {
- error_msg_and_die(fail_msg);
- }
- r += s * c;
- s <<= 8;
- } while (--n);
-
- return r;
-}
-
-static void read_header(FILE *fp, int *zh)
-{
- static const char s[] = { 2, 2, 2, 2, 2, 4, 4, 4, 2, 2, 0 };
- int i = 0;
-
- do {
- zh[i] = le_read_int(fp, s[i]);
- } while (s[++i]);
-}
-
-file_header_t *get_header_zip(FILE *zip_stream)
-{
- int zip_header[10];
- file_header_t *zip_entry = NULL;
- int magic, tmpmagic;
- /* If dd_ahead is true, we didn't know the last extracted file's length. */
- static int dd_ahead = 0;
-
- magic = le_read_int(zip_stream, 4);
-
- checkmagic:
- switch (magic) {
- case ZIP_FILEHEADER_MAGIC:
- zip_entry = xcalloc(1, sizeof(file_header_t));
-
- read_header(zip_stream, zip_header);
-
- if (zip_header[zh_method] == 8) {
- zip_entry->extract_func = &inflate;
- } else if (zip_header[zh_method] != 0) {
- error_msg_and_die("Unsupported compression method %d\n",
- zip_header[zh_method]);
- }
-
- zip_entry->name = xmalloc(zip_header[zh_filename_len] + 1);
- if (!fread(zip_entry->name, zip_header[zh_filename_len], 1, zip_stream)) {
- error_msg_and_die(fail_msg);
- }
- archive_offset += zip_header[zh_filename_len];
-
- seek_sub_file(zip_stream, zip_header[zh_extra_len]);
-
- zip_entry->size = zip_header[zh_cmpsize];
-
- zip_entry->mode = S_IFREG | 0777;
-
- /* Time/Date? */
-
- zip_entry->name[zip_header[zh_filename_len]] = 0;
- if (*(zip_entry->name + zip_header[zh_filename_len] - 1) == '/') {
- /* Files that end in a / are directories */
- /* Remove trailing / so unarchive doesn't get confused */
- *(zip_entry->name + zip_header[zh_filename_len] - 1) = '\0';
- zip_entry->mode ^= S_IFREG;
- zip_entry->mode |= S_IFDIR;
- }
-
- if (zip_header[zh_flags] & 0x8) {
- /* crc32, and sizes are in the data description _after_ the file */
- if (zip_header[zh_cmpsize] == 0) {
- /* As we don't know how long this file it is difficult to skip!
- * but it is compressed, so normally its ok */
- dd_ahead = 1;
- }
- if (zip_header[zh_ucmpsize] != 0) {
- /* Humm... we would otherwise skip this twice - not good! */
- dd_ahead = 2;
- }
- }
- break;
-
- case ZIP_CDS_MAGIC: /* FALLTHRU */
- case ZIP_CDS_END_MAGIC:
- return(NULL);
- break;
-
- case ZIP_DD_MAGIC: {
- int cmpsize;
- seek_sub_file(zip_stream, 4); // Skip crc32
- cmpsize = le_read_int(zip_stream, 4);
- if (dd_ahead == 1) archive_offset += cmpsize;
- seek_sub_file(zip_stream, 4); // Skip uncompressed size
- dd_ahead = 0;
- return (get_header_zip(zip_stream));
- break; }
-
- default:
- if (!dd_ahead) error_msg("Invalid magic (%#x): Trying to skip junk", magic);
- dd_ahead = 0;
- while ((tmpmagic = fgetc(zip_stream)) != EOF) {
- archive_offset++;
- magic = ((magic >> 8) & 0x00ffffff) | ((tmpmagic << 24) & 0xff000000);
- if (magic == ZIP_FILEHEADER_MAGIC
- || magic == ZIP_CDS_MAGIC
- || magic == ZIP_CDS_END_MAGIC) {
- goto checkmagic;
- }
- }
- error_msg_and_die(fail_msg);
- }
-
- return(zip_entry);
-}
+++ /dev/null
-/*
- * 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);
-}
projects / oweals / busybox.git / commitdiff