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authorEric Andersen <andersen@codepoet.org>2000-11-29 21:39:02 +0000
committerEric Andersen <andersen@codepoet.org>2000-11-29 21:39:02 +0000
commit4bfb6b7b67ff4238fde52e4019efe2284b9f99ef (patch)
treee9e09f6d93fc8e16b2fd13844b07beede33176d8 /unrpm.c
parente500d2083560b2988e7e48e00ba836ce0450c656 (diff)
downloadbusybox-4bfb6b7b67ff4238fde52e4019efe2284b9f99ef.tar.gz
Finish commit of rpmunpack and add in scripts for undeb and unrpm
Diffstat (limited to 'unrpm.c')
-rw-r--r--unrpm.c140
1 files changed, 0 insertions, 140 deletions
diff --git a/unrpm.c b/unrpm.c
deleted file mode 100644
index 26989e8b6..000000000
--- a/unrpm.c
+++ /dev/null
@@ -1,140 +0,0 @@
-/*
- * Mini unrpm implementation for busybox
- *
- * rpmunpack.c - Utility program to unpack an RPM archive
- *
- * Gero Kuhlmann <gero@gkminix.han.de> 1998
- *
- * This program is public domain software; you can do whatever you like
- * with this source, including modifying and redistributing it.
- *
- * 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.
- */
-
-#include "busybox.h"
-#include <unistd.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <fcntl.h>
-#include <string.h>
-
-/*
- * Some general definitions
- */
-#define BUFSIZE 512
-#define RPM_MAGIC "\355\253\356\333"
-#define GZ_MAGIC_1 '\037'
-#define GZ_MAGIC_2 '\213'
-
-/*
- * Global variables
- */
-static char buffer[BUFSIZE];
-static char *progname;
-static int infile, outfile;
-
-/*
- * Read a specified number of bytes from input file
- */
-static void myread(int num)
-{
- int err;
-
- if ((err = read(infile, buffer, num)) != num) {
- if (err < 0)
- perror(progname);
- else
- fprintf(stderr, "unexpected end of input file\n");
- exit(1);
- }
-}
-
-/*
- * Main program
- */
-int unrpm_main(int argc, char **argv)
-{
- int len, status = 0;
-
- /* Get our own program name */
- if ((progname = strrchr(argv[0], '/')) == NULL)
- progname = argv[0];
- else
- progname++;
-
- /* Check for command line parameters */
- if (argc>=2 && *argv[1]=='-') {
- usage(unrpm_usage);
- }
-
- /* Open input file */
- if (argc == 1)
- infile = STDIN_FILENO;
- else if ((infile = open(argv[1], O_RDONLY)) < 0) {
- perror(progname);
- exit(1);
- }
-
- /* Read magic ID and output filename */
- myread(4);
- if (strncmp(buffer, RPM_MAGIC, 4)) {
- fprintf(stderr, "input file is not in RPM format\n");
- exit(1);
- }
- myread(6); /* Skip flags */
- myread(64);
- buffer[64] = '\0';
-
- /* Open output file */
- strcat(buffer, ".cpio.gz");
- if (infile == STDIN_FILENO)
- outfile = STDOUT_FILENO;
- else if ((outfile = open(buffer, O_WRONLY | O_CREAT | O_TRUNC, 0644)) < 0) {
- perror(progname);
- exit(1);
- }
-
- /*
- * Now search for the GZIP signature. This is rather awkward, but I don't
- * know any other way how to find out the exact starting position of the
- * archive within the input file. There are a couple of data structures
- * and texts (obviously descriptions, installation shell scripts etc.)
- * coming before the archive, but even they start at different offsets
- * with different RPM files. However, it looks like the GZIP signature
- * never appears before offset 0x200, so we skip these first couple of
- * bytes to make the signature scan a little more reliable.
- */
- myread(0x200 - 74);
- while (status < 2) {
- myread(1);
- if (status == 0 && buffer[0] == GZ_MAGIC_1)
- status++;
- else if (status == 1 && buffer[0] == GZ_MAGIC_2)
- status++;
- else
- status = 0;
- }
- buffer[0] = GZ_MAGIC_1;
- buffer[1] = GZ_MAGIC_2;
- if (write(outfile, buffer, 2) < 0) {
- perror(progname);
- exit(1);
- }
-
- /* Now simply copy the GZIP archive into the output file */
- while ((len = read(infile, buffer, BUFSIZE)) > 0) {
- if (write(outfile, buffer, len) < 0) {
- perror(progname);
- exit(1);
- }
- }
- if (len < 0) {
- perror(progname);
- exit(1);
- }
- close(outfile);
- close(infile);
- exit(0);
-}