This is obsolete -- replaced by rpm2cpio

rpmunpack.c

@@ -1,126 +0,0 @@
-/*
- * rpmunpack 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 <fcntl.h>
-#include <unistd.h>
-#include <string.h>
-#include <stdlib.h>
-#include "busybox.h" 
-
-/*
- * Some general definitions
- */
-
-#define RPM_MAGIC	"\355\253\356\333"
-#define GZ_MAGIC_1	'\037'
-#define GZ_MAGIC_2	'\213'
-
-/*
- * Global variables
- */
-static char *progname;
-static int infile, outfile;
-
-/*
- * Read a specified number of bytes from input file
- */
-static void myread(int num, char *buffer)
-{
-  int err;
-
-  if ((err = read(infile, buffer, num)) != num) {
-	if (err < 0)
-		perror_msg_and_die(progname);
-	else
-		error_msg_and_die("Unexpected end of input file!");
-  }
-}
-
-/*
- * Main program
- */
-int rpmunpack_main(int argc, char **argv)
-{
-  int len, status = 0;
-  RESERVE_BB_BUFFER(buffer, BUFSIZ);
-
-  /* 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]=='-') {
-           show_usage();
-	}
-
-  /* Open input file */
-  if (argc == 1)
-	infile = STDIN_FILENO;
-  else if ((infile = open(argv[1], O_RDONLY)) < 0)
-	perror_msg_and_die("%s", argv[1]);
-
-  /* Read magic ID and output filename */
-  myread(4, buffer);
-  if (strncmp(buffer, RPM_MAGIC, 4)) {
-	fprintf(stderr, "Input file is not in RPM format!\n");
-	exit(1);
-  }
-  myread(6, buffer);		/* Skip flags */
-  myread(64, buffer);
-  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_msg_and_die("%s", buffer);
-
-  /*
-   * 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, buffer);
-  while (status < 2) {
-	myread(1, buffer);
-	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_msg_and_die("write");
-
-  /* Now simply copy the GZIP archive into the output file */
-  while ((len = read(infile, buffer, BUFSIZ)) > 0) {
-	if (write(outfile, buffer, len) < 0)
-		perror_msg_and_die("write");
-  }
-  if (len < 0)
-    perror_msg_and_die("read");
-  return EXIT_SUCCESS;
-}