1 /*
2 * dpkg-split - splitting and joining of multipart *.deb archives
3 * main.c - main program
4 *
5 * Copyright © 1994-1996 Ian Jackson <ijackson@chiark.greenend.org.uk>
6 * Copyright © 2006-2012 Guillem Jover <guillem@debian.org>
7 *
8 * This is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program. If not, see <https://www.gnu.org/licenses/>.
20 */
21 #include <config.h>
22 #include <compat.h>
23
24 #include <sys/types.h>
25
26 #include <errno.h>
27 #include <limits.h>
28 #include <inttypes.h>
29 #if HAVE_LOCALE_H
30 #include <locale.h>
31 #endif
32 #include <string.h>
33 #include <stdlib.h>
34 #include <stdio.h>
35
36 #include <dpkg/macros.h>
37 #include <dpkg/i18n.h>
38 #include <dpkg/dpkg.h>
39 #include <dpkg/dpkg-db.h>
40 #include <dpkg/options.h>
41
42 #include "dpkg-split.h"
43
44 static void DPKG_ATTR_NORET
printversion(const struct cmdinfo * cip,const char * value)45 printversion(const struct cmdinfo *cip, const char *value)
46 {
47 printf(_("Debian '%s' package split/join tool; version %s.\n"),
48 SPLITTER, PACKAGE_RELEASE);
49
50 printf(_(
51 "This is free software; see the GNU General Public License version 2 or\n"
52 "later for copying conditions. There is NO warranty.\n"));
53
54 m_output(stdout, _("<standard output>"));
55
56 exit(0);
57 }
58
59 static void DPKG_ATTR_NORET
usage(const struct cmdinfo * cip,const char * value)60 usage(const struct cmdinfo *cip, const char *value)
61 {
62 printf(_(
63 "Usage: %s [<option> ...] <command>\n"
64 "\n"), SPLITTER);
65
66 printf(_(
67 "Commands:\n"
68 " -s|--split <file> [<prefix>] Split an archive.\n"
69 " -j|--join <part> <part> ... Join parts together.\n"
70 " -I|--info <part> ... Display info about a part.\n"
71 " -a|--auto -o <complete> <part> Auto-accumulate parts.\n"
72 " -l|--listq List unmatched pieces.\n"
73 " -d|--discard [<filename> ...] Discard unmatched pieces.\n"
74 "\n"));
75
76 printf(_(
77 " -?, --help Show this help message.\n"
78 " --version Show the version.\n"
79 "\n"));
80
81 printf(_(
82 "Options:\n"
83 " --depotdir <directory> Use <directory> instead of %s/%s.\n"
84 " -S|--partsize <size> In KiB, for -s (default is 450).\n"
85 " -o|--output <file> Filename, for -j (default is\n"
86 " <package>_<version>_<arch>.deb).\n"
87 " -Q|--npquiet Be quiet when -a is not a part.\n"
88 " --msdos Generate 8.3 filenames.\n"
89 "\n"), ADMINDIR, PARTSDIR);
90
91 printf(_(
92 "Exit status:\n"
93 " 0 = ok\n"
94 " 1 = with --auto, file is not a part\n"
95 " 2 = trouble\n"));
96
97
98 m_output(stdout, _("<standard output>"));
99
100 exit(0);
101 }
102
103 static const char printforhelp[] = N_("Type dpkg-split --help for help.");
104
105 off_t opt_maxpartsize = SPLITPARTDEFMAX;
106 static const char *admindir;
107 const char *opt_depotdir;
108 const char *opt_outputfile = NULL;
109 int opt_npquiet = 0;
110 int opt_msdos = 0;
111
112 void DPKG_ATTR_NORET
read_fail(int rc,const char * filename,const char * what)113 read_fail(int rc, const char *filename, const char *what)
114 {
115 if (rc >= 0)
116 ohshit(_("unexpected end of file in %s in %.255s"), what, filename);
117 else
118 ohshite(_("error reading %s from file %.255s"), what, filename);
119 }
120
121 static void
set_part_size(const struct cmdinfo * cip,const char * value)122 set_part_size(const struct cmdinfo *cip, const char *value)
123 {
124 off_t newpartsize;
125 char *endp;
126
127 errno = 0;
128 newpartsize = strtoimax(value, &endp, 10);
129 if (value == endp || *endp)
130 badusage(_("invalid integer for --%s: '%.250s'"), cip->olong, value);
131 if (newpartsize <= 0 || newpartsize > (INT_MAX >> 10) || errno == ERANGE)
132 badusage(_("part size is far too large or is not positive"));
133
134 opt_maxpartsize = newpartsize << 10;
135 if (opt_maxpartsize <= HEADERALLOWANCE)
136 badusage(_("part size must be at least %d KiB (to allow for header)"),
137 (HEADERALLOWANCE >> 10) + 1);
138 }
139
140 static const struct cmdinfo cmdinfos[]= {
141 ACTION("split", 's', 0, do_split),
142 ACTION("join", 'j', 0, do_join),
143 ACTION("info", 'I', 0, do_info),
144 ACTION("auto", 'a', 0, do_auto),
145 ACTION("listq", 'l', 0, do_queue),
146 ACTION("discard", 'd', 0, do_discard),
147
148 { "help", '?', 0, NULL, NULL, usage },
149 { "version", 0, 0, NULL, NULL, printversion },
150 { "depotdir", 0, 1, NULL, &opt_depotdir, NULL },
151 { "partsize", 'S', 1, NULL, NULL, set_part_size },
152 { "output", 'o', 1, NULL, &opt_outputfile, NULL },
153 { "npquiet", 'Q', 0, &opt_npquiet, NULL, NULL, 1 },
154 { "msdos", 0, 0, &opt_msdos, NULL, NULL, 1 },
155 { NULL, 0 }
156 };
157
main(int argc,const char * const * argv)158 int main(int argc, const char *const *argv) {
159 int ret;
160
161 dpkg_locales_init(PACKAGE);
162 dpkg_program_init(SPLITTER);
163 dpkg_options_parse(&argv, cmdinfos, printforhelp);
164
165 admindir = dpkg_db_set_dir(admindir);
166 if (opt_depotdir == NULL)
167 opt_depotdir = dpkg_db_get_path(PARTSDIR);
168
169 if (!cipaction) badusage(_("need an action option"));
170
171 ret = cipaction->action(argv);
172
173 m_output(stderr, _("<standard error>"));
174
175 dpkg_program_done();
176
177 return ret;
178 }
179