tar -Z, uncompress support
[oweals/busybox.git] / archival / dpkg_deb.c
index aed0ba3686d45344c0abd701a57dc88b67590c9a..2d7383fd7988f62b2844ca8d27312dc8bed80b24 100644 (file)
  *  along with this program; if not, write to the Free Software
  *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  */
-
-/*
- *     Merge this applet into dpkg when dpkg becomes more stable
- */
-
-#include <stdio.h>
-#include <stdlib.h>
 #include <fcntl.h>
-#include <unistd.h>
-#include <string.h>
 #include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <getopt.h>
+#include "unarchive.h"
 #include "busybox.h"
 
-typedef struct ar_headers_s {
-       char *name;
-       size_t size;
-       uid_t uid;
-       gid_t gid;
-       mode_t mode;
-       time_t mtime;
-       off_t offset;
-       struct ar_headers_s *next;
-} ar_headers_t;
-
-extern ar_headers_t get_ar_headers(int srcFd);
-extern int tar_unzip_init(int tarFd);
-extern int readTarFile(int tarFd, int extractFlag, int listFlag, 
-       int tostdoutFlag, int verboseFlag, char** extractList, char** excludeList);
-
-static const int dpkg_deb_contents = 1;
-static const int dpkg_deb_control = 2;
-//     const int dpkg_deb_info = 4;
-static const int dpkg_deb_extract = 8;
-static const int dpkg_deb_verbose_extract = 16;
-static const int dpkg_deb_list = 32;
-
-extern int deb_extract(int optflags, const char *dir_name, const char *deb_filename)
+extern int dpkg_deb_main(int argc, char **argv)
 {
-       char **extract_list = NULL;
-       ar_headers_t *ar_headers = NULL;
-       char ar_filename[15];
-       int extract_flag = FALSE;
-       int list_flag = FALSE;
-       int verbose_flag = FALSE;
-       int extract_to_stdout = FALSE;
-       int srcFd = 0;
-       int status;
-
-       if (dpkg_deb_contents == (dpkg_deb_contents & optflags)) {
-               strcpy(ar_filename, "data.tar.gz");
-               verbose_flag = TRUE;
-               list_flag = TRUE;
-       }
-       if (dpkg_deb_list == (dpkg_deb_list & optflags)) {
-               strcpy(ar_filename, "data.tar.gz");
-               list_flag = TRUE;
-       }
-       if (dpkg_deb_control == (dpkg_deb_control & optflags)) {
-               strcpy(ar_filename, "control.tar.gz");  
-               extract_flag = TRUE;
-       }
-       if (dpkg_deb_extract == (dpkg_deb_extract & optflags)) {
-               strcpy(ar_filename, "data.tar.gz");
-               extract_flag = TRUE;
-       }
-       if (dpkg_deb_verbose_extract == (dpkg_deb_verbose_extract & optflags)) {
-               strcpy(ar_filename, "data.tar.gz");
-               extract_flag = TRUE;
-               list_flag = TRUE;
-       }
-
-       ar_headers = (ar_headers_t *) xmalloc(sizeof(ar_headers_t));    
-       srcFd = open(deb_filename, O_RDONLY);
+       archive_handle_t *ar_archive;
+       archive_handle_t *tar_archive;
+       int opt = 0;
+#ifndef CONFIG_FEATURE_DPKG_DEB_EXTRACT_ONLY
+       llist_t *control_tar_llist = NULL;
+#endif
        
-       *ar_headers = get_ar_headers(srcFd);
-       if (ar_headers->next == NULL) {
-               error_msg_and_die("Couldnt find %s in %s", ar_filename, deb_filename);
-       }
+       /* Setup the tar archive handle */
+       tar_archive = init_handle();
 
-       while (ar_headers->next != NULL) {
-               if (strcmp(ar_headers->name, ar_filename) == 0) {
-                       break;
-               }
-               ar_headers = ar_headers->next;
-       }
-       lseek(srcFd, ar_headers->offset, SEEK_SET);
-       srcFd = tar_unzip_init(srcFd);
-       if ( dir_name != NULL) { 
-               if (is_directory(dir_name, TRUE, NULL)==FALSE) {
-                       mkdir(dir_name, 0755);
-               }
-               if (chdir(dir_name)==-1) {
-                       error_msg_and_die("Cannot change to dir %s", dir_name);
-               }
-       }
-       status = readTarFile(srcFd, extract_flag, list_flag, extract_to_stdout, verbose_flag, NULL, extract_list);
+       /* Setup an ar archive handle that refers to the gzip sub archive */    
+       ar_archive = init_handle();
+       ar_archive->sub_archive = tar_archive;
+       ar_archive->filter = filter_accept_list_reassign;
 
-       return status;
-}
+#ifdef CONFIG_FEATURE_DEB_TAR_GZ
+       ar_archive->accept = llist_add_to(NULL, "data.tar.gz");
+# ifndef CONFIG_FEATURE_DPKG_DEB_EXTRACT_ONLY
+       control_tar_llist = llist_add_to(NULL, "control.tar.gz");
+# endif
+#endif
 
-extern int dpkg_deb_main(int argc, char **argv)
-{
-       char *target_dir = NULL;
-       int opt = 0;
-       int optflag = 0;        
-       
-       while ((opt = getopt(argc, argv, "cexXl")) != -1) {
+#ifdef CONFIG_FEATURE_DEB_TAR_BZ2
+       ar_archive->accept = llist_add_to(ar_archive->accept, "data.tar.bz2");
+# ifndef CONFIG_FEATURE_DPKG_DEB_EXTRACT_ONLY
+       control_tar_llist = llist_add_to(control_tar_llist, "control.tar.bz2");
+# endif
+#endif
+
+#ifndef CONFIG_FEATURE_DPKG_DEB_EXTRACT_ONLY
+       while ((opt = getopt(argc, argv, "cefXx")) != -1) {
+#else
+       while ((opt = getopt(argc, argv, "x")) != -1) {
+#endif
                switch (opt) {
+#ifndef CONFIG_FEATURE_DPKG_DEB_EXTRACT_ONLY
                        case 'c':
-                               optflag |= dpkg_deb_contents;
+                               tar_archive->action_header = header_verbose_list;
                                break;
                        case 'e':
-                               optflag |= dpkg_deb_control;
+                               ar_archive->accept = control_tar_llist;
+                               tar_archive->action_data = data_extract_all;
                                break;
-                       case 'X':
-                               optflag |= dpkg_deb_verbose_extract;
+                       case 'f':
+                               /* Print the entire control file
+                                * it should accept a second argument which specifies a 
+                                * specific field to print */
+                               ar_archive->accept = control_tar_llist;
+                               tar_archive->accept = llist_add_to(NULL, "./control");;
+                               tar_archive->filter = filter_accept_list;
+                               tar_archive->action_data = data_extract_to_stdout;
                                break;
+                       case 'X':
+                               tar_archive->action_header = header_list;
+#endif
                        case 'x':
-                               optflag |= dpkg_deb_extract;
+                               tar_archive->action_data = data_extract_all;
                                break;
-                       case 'l':
-                               optflag |= dpkg_deb_list;
-                               break;
-/*                     case 'I':
-                               optflag |= dpkg_deb_info;
-                               break;
-*/
                        default:
-                               usage(dpkg_deb_usage);
-                               return EXIT_FAILURE;
+                               bb_show_usage();
                }
        }
 
-       if (((optind + 1 ) > argc) || (optflag == 0))  {
-               usage(dpkg_deb_usage);
-               return(EXIT_FAILURE);
-       }
-       if ((optflag & dpkg_deb_control) || (optflag & dpkg_deb_extract) || (optflag & dpkg_deb_verbose_extract)) {
-               if ( (optind + 1) == argc ) {
-                       target_dir = (char *) xmalloc(7);
-                       strcpy(target_dir, "DEBIAN");
-               } else {
-                       target_dir = (char *) xmalloc(strlen(argv[optind + 1]));
-                       strcpy(target_dir, argv[optind + 1]);
-               }
-       }
-       deb_extract(optflag, target_dir, argv[optind]);
-/*     else if (optflag & dpkg_deb_info) {
-               extract_flag = TRUE;
-               extract_to_stdout = TRUE;
-               strcpy(ar_filename, "control.tar.gz");
-               extract_list = argv+optind+1;
-               printf("list one is [%s]\n",extract_list[0]);
+       if (optind + 2 < argc)  {
+               bb_show_usage();
        }
-*/
+
+       tar_archive->src_fd = ar_archive->src_fd = bb_xopen(argv[optind++], O_RDONLY);
+
+       /* Workout where to extract the files */
+       /* 2nd argument is a dir name */
+       mkdir(argv[optind], 0777);
+       chdir(argv[optind]);
+
+       unpack_ar_archive(ar_archive);
+
+       /* Cleanup */
+       close (ar_archive->src_fd);
+
        return(EXIT_SUCCESS);
 }
+