diff options
Diffstat (limited to 'dpkg-deb/main.c')
| -rw-r--r-- | dpkg-deb/main.c | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/dpkg-deb/main.c b/dpkg-deb/main.c new file mode 100644 index 000000000..0804ac721 --- /dev/null +++ b/dpkg-deb/main.c @@ -0,0 +1,151 @@ +/* + * dpkg-deb - construction and deconstruction of *.deb archives + * main.c - main program + * + * Copyright (C) 1994,1995 Ian Jackson <iwj10@cus.cam.ac.uk> + * + * This 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, + * or (at your option) any later version. + * + * This 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 dpkg; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include <stdio.h> +#include <string.h> +#include <stdlib.h> +#include <signal.h> +#include <sys/stat.h> +#include <sys/types.h> +#include <sys/wait.h> +#include <errno.h> +#include <unistd.h> +#include <dirent.h> +#include <limits.h> +#include <ctype.h> +#include <assert.h> + +#include "config.h" +#include "dpkg.h" +#include "version.h" +#include "myopt.h" +#include "dpkg-deb.h" + +static void printversion(void) { + if (!fputs("Debian GNU/Linux `" BACKEND "' package archive backend " + "version " DPKG_VERSION_ARCH ".\n" + "Copyright (C) 1994,1995 Ian Jackson. This is free software; see the\n" + "GNU General Public Licence version 2 or later for copying conditions.\n" + "There is NO warranty. See dpkg-deb --licence for details.\n", + stderr)) werr("stderr"); +} + +static void usage(void) { + if (!fputs("\ +Usage: " BACKEND " -b|--build <directory> [<deb>] Build an archive.\n\ + " BACKEND " -c|--contents <deb> List contents.\n\ + " BACKEND " -I|--info <deb> [<cfile>...] Show info to stdout.\n\ + " BACKEND " -f|--field <deb> [<cfield>...] Show field(s) to stdout.\n\ + " BACKEND " -e|--control <deb> [<directory>] Extract control info.\n\ + " BACKEND " -x|--extract <deb> <directory> Extract files.\n\ + " BACKEND " -X|--vextract <deb> <directory> Extract & list files.\n\ + " BACKEND " --fsys-tarfile <deb> Output filesystem tarfile.\n\ + " BACKEND " -h|--help Display this message.\n\ + " BACKEND " --version | --licence Show version/licence.\n\ +<deb> is the filename of a Debian format archive.\n\ +<cfile> is the name of an administrative file component.\n\ +<cfield> is the name of a field in the main `control' file.\n\ +Options: -D for debugging output; --old or --new controls archive format;\n\ + --no-check to suppress control file check (build bad package).\n\ +\n\ +Use `" DPKG "' to install and remove packages from your system, or\n\ +`" DSELECT "' for user-friendly package management. Packages unpacked\n\ +using `" BACKEND " --extract' will be incorrectly installed !\n", + stderr)) werr("stderr"); +} + +const char thisname[]= BACKEND; +const char printforhelp[]= + "Type " BACKEND " --help for help about manipulating *.deb files;\n" + "Type " DPKG " --help for help about installing and deinstalling packages."; + +int debugflag=0, nocheckflag=0, oldformatflag=BUILDOLDPKGFORMAT; +const struct cmdinfo *cipaction=0; +dofunction *action=0; + +static void helponly(const struct cmdinfo *cip, const char *value) { + usage(); exit(0); +} +static void versiononly(const struct cmdinfo *cip, const char *value) { + printversion(); exit(0); +} + +static void setaction(const struct cmdinfo *cip, const char *value); + +static dofunction *const dofunctions[]= { + do_build, + do_contents, + do_control, + do_info, + do_field, + do_extract, + do_vextract, + do_fsystarfile +}; + +/* NB: the entries using setaction must appear first and be in the + * same order as dofunctions: + */ +static const struct cmdinfo cmdinfos[]= { + { "build", 'b', 0, 0, 0, setaction }, + { "contents", 'c', 0, 0, 0, setaction }, + { "control", 'e', 0, 0, 0, setaction }, + { "info", 'I', 0, 0, 0, setaction }, + { "field", 'f', 0, 0, 0, setaction }, + { "extract", 'x', 0, 0, 0, setaction }, + { "vextract", 'X', 0, 0, 0, setaction }, + { "fsys-tarfile", 0, 0, 0, 0, setaction }, + { "new", 0, 0, &oldformatflag, 0, 0, 0 }, + { "old", 0, 0, &oldformatflag, 0, 0, 1 }, + { "debug", 'D', 0, &debugflag, 0, 0, 1 }, + { "nocheck", 0, 0, &nocheckflag, 0, 0, 1 }, + { "help", 'h', 0, 0, 0, helponly }, + { "version", 0, 0, 0, 0, versiononly }, + { "licence", 0, 0, 0, 0, showcopyright }, /* UK spelling */ + { "license", 0, 0, 0, 0, showcopyright }, /* US spelling */ + { 0, 0 } +}; + +static void setaction(const struct cmdinfo *cip, const char *value) { + if (cipaction) + badusage("conflicting actions --%s and --%s",cip->olong,cipaction->olong); + cipaction= cip; + assert(cip-cmdinfos < sizeof(dofunctions)*sizeof(dofunction*)); + action= dofunctions[cip-cmdinfos]; +} + +int main(int argc, const char *const *argv) { + jmp_buf ejbuf; + + if (setjmp(ejbuf)) { /* expect warning about possible clobbering of argv */ + error_unwind(ehflag_bombout); exit(2); + } + push_error_handler(&ejbuf,print_error_fatal,0); + + myopt(&argv,cmdinfos); + if (!cipaction) badusage("need an action option"); + + unsetenv("GZIP"); + action(argv); + set_error_display(0,0); + error_unwind(ehflag_normaltidy); + exit(0); +} |