1 | /* vi: set sw=4 ts=4: */
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2 | /*
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3 | * dpkg-deb packs, unpacks and provides information about Debian archives.
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4 | *
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5 | * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
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6 | */
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7 | #include "libbb.h"
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8 | #include "unarchive.h"
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9 |
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10 | #define DPKG_DEB_OPT_CONTENTS 1
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11 | #define DPKG_DEB_OPT_CONTROL 2
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12 | #define DPKG_DEB_OPT_FIELD 4
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13 | #define DPKG_DEB_OPT_EXTRACT 8
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14 | #define DPKG_DEB_OPT_EXTRACT_VERBOSE 16
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15 |
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16 | int dpkg_deb_main(int argc, char **argv);
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17 | int dpkg_deb_main(int argc, char **argv)
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18 | {
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19 | archive_handle_t *ar_archive;
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20 | archive_handle_t *tar_archive;
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21 | llist_t *control_tar_llist = NULL;
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22 | unsigned opt;
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23 | const char *extract_dir = NULL;
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24 | short argcount = 1;
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25 |
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26 | /* Setup the tar archive handle */
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27 | tar_archive = init_handle();
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28 |
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29 | /* Setup an ar archive handle that refers to the gzip sub archive */
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30 | ar_archive = init_handle();
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31 | ar_archive->sub_archive = tar_archive;
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32 | ar_archive->filter = filter_accept_list_reassign;
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33 |
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34 | #if ENABLE_FEATURE_DEB_TAR_GZ
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35 | llist_add_to(&(ar_archive->accept), (char*)"data.tar.gz");
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36 | llist_add_to(&control_tar_llist, (char*)"control.tar.gz");
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37 | #endif
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38 |
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39 | #if ENABLE_FEATURE_DEB_TAR_BZ2
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40 | llist_add_to(&(ar_archive->accept), (char*)"data.tar.bz2");
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41 | llist_add_to(&control_tar_llist, (char*)"control.tar.bz2");
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42 | #endif
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43 |
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44 | opt_complementary = "?c--efXx:e--cfXx:f--ceXx:X--cefx:x--cefX";
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45 | opt = getopt32(argv, "cefXx");
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46 |
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47 | if (opt & DPKG_DEB_OPT_CONTENTS) {
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48 | tar_archive->action_header = header_verbose_list;
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49 | }
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50 | if (opt & DPKG_DEB_OPT_CONTROL) {
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51 | ar_archive->accept = control_tar_llist;
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52 | tar_archive->action_data = data_extract_all;
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53 | if (optind + 1 == argc) {
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54 | extract_dir = "./DEBIAN";
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55 | } else {
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56 | argcount++;
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57 | }
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58 | }
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59 | if (opt & DPKG_DEB_OPT_FIELD) {
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60 | /* Print the entire control file
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61 | * it should accept a second argument which specifies a
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62 | * specific field to print */
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63 | ar_archive->accept = control_tar_llist;
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64 | llist_add_to(&(tar_archive->accept), (char*)"./control");
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65 | tar_archive->filter = filter_accept_list;
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66 | tar_archive->action_data = data_extract_to_stdout;
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67 | }
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68 | if (opt & DPKG_DEB_OPT_EXTRACT) {
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69 | tar_archive->action_header = header_list;
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70 | }
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71 | if (opt & (DPKG_DEB_OPT_EXTRACT_VERBOSE | DPKG_DEB_OPT_EXTRACT)) {
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72 | tar_archive->action_data = data_extract_all;
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73 | argcount = 2;
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74 | }
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75 |
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76 | if ((optind + argcount) != argc) {
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77 | bb_show_usage();
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78 | }
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79 |
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80 | tar_archive->src_fd = ar_archive->src_fd = xopen(argv[optind++], O_RDONLY);
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81 |
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82 | /* Workout where to extract the files */
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83 | /* 2nd argument is a dir name */
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84 | if (argv[optind]) {
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85 | extract_dir = argv[optind];
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86 | }
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87 | if (extract_dir) {
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88 | mkdir(extract_dir, 0777); /* bb_make_directory(extract_dir, 0777, 0) */
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89 | xchdir(extract_dir);
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90 | }
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91 | unpack_ar_archive(ar_archive);
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92 |
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93 | /* Cleanup */
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94 | close(ar_archive->src_fd);
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95 |
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96 | return EXIT_SUCCESS;
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97 | }
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