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-rw-r--r--gnu/usr.bin/gzip/unzip.c205
1 files changed, 0 insertions, 205 deletions
diff --git a/gnu/usr.bin/gzip/unzip.c b/gnu/usr.bin/gzip/unzip.c
deleted file mode 100644
index b103a7f..0000000
--- a/gnu/usr.bin/gzip/unzip.c
+++ /dev/null
@@ -1,205 +0,0 @@
-/* unzip.c -- decompress files in gzip or pkzip format.
- * Copyright (C) 1992-1993 Jean-loup Gailly
- * This is free software; you can redistribute it and/or modify it under the
- * terms of the GNU General Public License, see the file COPYING.
- *
- * The code in this file is derived from the file funzip.c written
- * and put in the public domain by Mark Adler.
- */
-
-/*
- This version can extract files in gzip or pkzip format.
- For the latter, only the first entry is extracted, and it has to be
- either deflated or stored.
- */
-
-#ifdef RCSID
-static char rcsid[] = "$Id: unzip.c,v 0.13 1993/06/10 13:29:00 jloup Exp $";
-#endif
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
-
-#include "tailor.h"
-#include "gzip.h"
-#include "crypt.h"
-
-/* PKZIP header definitions */
-#define LOCSIG 0x04034b50L /* four-byte lead-in (lsb first) */
-#define LOCFLG 6 /* offset of bit flag */
-#define CRPFLG 1 /* bit for encrypted entry */
-#define EXTFLG 8 /* bit for extended local header */
-#define LOCHOW 8 /* offset of compression method */
-#define LOCTIM 10 /* file mod time (for decryption) */
-#define LOCCRC 14 /* offset of crc */
-#define LOCSIZ 18 /* offset of compressed size */
-#define LOCLEN 22 /* offset of uncompressed length */
-#define LOCFIL 26 /* offset of file name field length */
-#define LOCEXT 28 /* offset of extra field length */
-#define LOCHDR 30 /* size of local header, including sig */
-#define EXTHDR 16 /* size of extended local header, inc sig */
-#define RAND_HEAD_LEN 12 /* length of encryption random header */
-
-
-/* Globals */
-
-int decrypt; /* flag to turn on decryption */
-char *key; /* not used--needed to link crypt.c */
-int pkzip = 0; /* set for a pkzip file */
-int ext_header = 0; /* set if extended local header */
-
-/* ===========================================================================
- * Check zip file and advance inptr to the start of the compressed data.
- * Get ofname from the local header if necessary.
- */
-int check_zipfile(in)
- int in; /* input file descriptors */
-{
- uch *h = inbuf + inptr; /* first local header */
-
- ifd = in;
-
- /* Check validity of local header, and skip name and extra fields */
- inptr += LOCHDR + SH(h + LOCFIL) + SH(h + LOCEXT);
-
- if (inptr > insize || LG(h) != LOCSIG) {
- fprintf(stderr, "\n%s: %s: not a valid zip file\n",
- progname, ifname);
- exit_code = ERROR;
- return ERROR;
- }
- method = h[LOCHOW];
- if (method != STORED && method != DEFLATED) {
- fprintf(stderr,
- "\n%s: %s: first entry not deflated or stored -- use unzip\n",
- progname, ifname);
- exit_code = ERROR;
- return ERROR;
- }
-
- /* If entry encrypted, decrypt and validate encryption header */
- if ((decrypt = h[LOCFLG] & CRPFLG) != 0) {
- fprintf(stderr, "\n%s: %s: encrypted file -- use unzip\n",
- progname, ifname);
- exit_code = ERROR;
- return ERROR;
- }
-
- /* Save flags for unzip() */
- ext_header = (h[LOCFLG] & EXTFLG) != 0;
- pkzip = 1;
-
- /* Get ofname and time stamp from local header (to be done) */
- return OK;
-}
-
-/* ===========================================================================
- * Unzip in to out. This routine works on both gzip and pkzip files.
- *
- * IN assertions: the buffer inbuf contains already the beginning of
- * the compressed data, from offsets inptr to insize-1 included.
- * The magic header has already been checked. The output buffer is cleared.
- */
-int unzip(in, out)
- int in, out; /* input and output file descriptors */
-{
- ulg orig_crc = 0; /* original crc */
- ulg orig_len = 0; /* original uncompressed length */
- int n;
- uch buf[EXTHDR]; /* extended local header */
- int err = OK;
-
- ifd = in;
- ofd = out;
-
- updcrc(NULL, 0); /* initialize crc */
-
- if (pkzip && !ext_header) { /* crc and length at the end otherwise */
- orig_crc = LG(inbuf + LOCCRC);
- orig_len = LG(inbuf + LOCLEN);
- }
-
- /* Decompress */
- if (method == DEFLATED) {
-
- int res = inflate();
-
- if (res == 3) {
- error("out of memory");
- } else if (res != 0) {
- error("invalid compressed data--format violated");
- }
-
- } else if (pkzip && method == STORED) {
-
- register ulg n = LG(inbuf + LOCLEN);
-
- if (n != LG(inbuf + LOCSIZ) - (decrypt ? RAND_HEAD_LEN : 0)) {
-
- fprintf(stderr, "len %ld, siz %ld\n", n, LG(inbuf + LOCSIZ));
- error("invalid compressed data--length mismatch");
- }
- while (n--) {
- uch c = (uch)get_byte();
- put_ubyte(c);
- }
- flush_window();
- } else {
- error("internal error, invalid method");
- }
-
- /* Get the crc and original length */
- if (!pkzip) {
- /* crc32 (see algorithm.doc)
- * uncompressed input size modulo 2^32
- */
- for (n = 0; n < 8; n++) {
- buf[n] = (uch)get_byte(); /* may cause an error if EOF */
- }
- orig_crc = LG(buf);
- orig_len = LG(buf+4);
-
- } else if (ext_header) { /* If extended header, check it */
- /* signature - 4bytes: 0x50 0x4b 0x07 0x08
- * CRC-32 value
- * compressed size 4-bytes
- * uncompressed size 4-bytes
- */
- for (n = 0; n < EXTHDR; n++) {
- buf[n] = (uch)get_byte(); /* may cause an error if EOF */
- }
- orig_crc = LG(buf+4);
- orig_len = LG(buf+12);
- }
-
- /* Validate decompression */
- if (orig_crc != updcrc(outbuf, 0)) {
- fprintf(stderr, "\n%s: %s: invalid compressed data--crc error\n",
- progname, ifname);
- err = ERROR;
- }
- if (((orig_len - (ulg)bytes_out) & 0x0ffffffffL) != 0) {
- fprintf(stderr, "\n%s: %s: invalid compressed data--length error\n",
- progname, ifname);
- err = ERROR;
- }
-
- /* Check if there are more entries in a pkzip file */
- if (pkzip && inptr + 4 < insize && LG(inbuf+inptr) == LOCSIG) {
- if (to_stdout) {
- WARN((stderr,
- "%s: %s has more than one entry--rest ignored\n",
- progname, ifname));
- } else {
- /* Don't destroy the input zip file */
- fprintf(stderr,
- "%s: %s has more than one entry -- unchanged\n",
- progname, ifname);
- err = ERROR;
- }
- }
- ext_header = pkzip = 0; /* for next file */
- if (err == OK) return OK;
- exit_code = ERROR;
- if (!test) abort_gzip();
- return err;
-}
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