mirror of
https://github.com/CTCaer/RetroArch.git
synced 2024-12-28 05:38:24 +00:00
3434 lines
99 KiB
C
3434 lines
99 KiB
C
/* This source as presented is a modified version of original zlib for use
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* with RetroArch, and must not be confused with the original software. */
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#include <stdio.h>
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#include <stddef.h>
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#include <stdlib.h>
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#include <errno.h>
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#include "zlib.h"
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#include "../../compat/strl.h"
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#ifdef _MSC_VER
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#include "../../msvc/msvc_compat.h"
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#endif
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/* And'ing with mask[n] masks the lower n bits */
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unsigned int inflate_mask[17] =
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{
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0x0000,
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0x0001, 0x0003, 0x0007, 0x000f, 0x001f, 0x003f, 0x007f, 0x00ff,
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0x01ff, 0x03ff, 0x07ff, 0x0fff, 0x1fff, 0x3fff, 0x7fff, 0xffff
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};
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typedef enum {
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METHOD_INFLATE, /* waiting for method byte */
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FLAG_INFLATE, /* waiting for flag byte */
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DICT4_INFLATE, /* four dictionary check bytes to go */
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DICT3_INFLATE, /* three dictionary check bytes to go */
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DICT2_INFLATE, /* two dictionary check bytes to go */
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DICT1_INFLATE, /* one dictionary check byte to go */
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DICT0_INFLATE, /* waiting for inflateSetDictionary */
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BLOCKS_INFLATE, /* decompressing blocks */
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CHECK4_INFLATE, /* four check bytes to go */
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CHECK3_INFLATE, /* three check bytes to go */
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CHECK2_INFLATE, /* two check bytes to go */
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CHECK1_INFLATE, /* one check byte to go */
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DONE_INFLATE, /* finished check, done */
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BAD_INFLATE} /* got an error--stay here */
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inflate_mode;
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/* inflate private state */
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struct internal_state
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{
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/* mode */
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inflate_mode mode; /* current inflate mode */
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/* mode dependent information */
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union {
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unsigned int method; /* if FLAGS, method byte */
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struct {
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unsigned long was; /* computed check value */
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unsigned long need; /* stream check value */
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} check; /* if CHECK, check values to compare */
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unsigned int marker; /* if BAD, inflateSync's marker bytes count */
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} sub; /* submode */
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/* mode independent information */
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int nowrap; /* flag for no wrapper */
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unsigned int wbits; /* log2(window size) (8..15, defaults to 15) */
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inflate_blocks_statef *blocks; /* current inflate_blocks state */
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};
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typedef enum { /* waiting for "i:"=input, "o:"=output, "x:"=nothing */
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START, /* x: set up for LEN */
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LEN, /* i: get length/literal/eob next */
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LENEXT, /* i: getting length extra (have base) */
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DIST, /* i: get distance next */
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DISTEXT, /* i: getting distance extra */
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COPY, /* o: copying bytes in window, waiting for space */
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LIT, /* o: got literal, waiting for output space */
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WASH, /* o: got eob, possibly still output waiting */
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END, /* x: got eob and all data flushed */
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BADCODE} /* x: got error */
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inflate_codes_mode;
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static int huft_build (
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unsigned int *, /* code lengths in bits */
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unsigned int, /* number of codes */
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unsigned int, /* number of "simple" codes */
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const unsigned int *, /* list of base values for non-simple codes */
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const unsigned int *, /* list of extra bits for non-simple codes */
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inflate_huft **, /* result: starting table */
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unsigned int *, /* maximum lookup bits (returns actual) */
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inflate_huft *, /* space for trees */
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unsigned int *, /* hufts used in space */
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unsigned int * ); /* space for values */
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/* Tables for deflate from PKZIP's appnote.txt. */
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const unsigned int cplens[31] = { /* Copy lengths for literal codes 257..285 */
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3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31,
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35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 0, 0};
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/* see note #13 above about 258 */
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const unsigned int cplext[31] = { /* Extra bits for literal codes 257..285 */
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0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2,
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3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 0, 112, 112}; /* 112==invalid */
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const unsigned int cpdist[30] = { /* Copy offsets for distance codes 0..29 */
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1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193,
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257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145,
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8193, 12289, 16385, 24577};
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const unsigned int cpdext[30] = { /* Extra bits for distance codes */
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0, 0, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6,
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7, 7, 8, 8, 9, 9, 10, 10, 11, 11,
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12, 12, 13, 13};
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#define BASE 65521L /* largest prime smaller than 65536 */
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#define NMAX 5552
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#define DO1_ADLER(buf,i) {s1 += buf[i]; s2 += s1;}
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#define DO2_ADLER(buf,i) DO1_ADLER(buf,i); DO1_ADLER(buf,i+1);
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#define DO4_ADLER(buf,i) DO2_ADLER(buf,i); DO2_ADLER(buf,i+2);
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#define DO8_ADLER(buf,i) DO4_ADLER(buf,i); DO4_ADLER(buf,i+4);
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#define DO16_ADLER(buf) DO8_ADLER(buf,0); DO8_ADLER(buf,8);
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/* If BMAX needs to be larger than 16, then h and x[] should be unsigned long. */
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#define BMAX 15 /* maximum bit length of any code */
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/* inflate codes private state */
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struct inflate_codes_state
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{
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/* mode */
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inflate_codes_mode mode; /* current inflate_codes mode */
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/* mode dependent information */
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unsigned int len;
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union {
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struct {
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inflate_huft *tree; /* pointer into tree */
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unsigned int need; /* bits needed */
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} code; /* if LEN or DIST, where in tree */
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unsigned int lit; /* if LIT, literal */
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struct {
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unsigned int get; /* bits to get for extra */
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unsigned int dist; /* distance back to copy from */
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} copy; /* if EXT or COPY, where and how much */
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} sub; /* submode */
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/* mode independent information */
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Byte lbits; /* ltree bits decoded per branch */
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Byte dbits; /* dtree bits decoder per branch */
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inflate_huft *ltree; /* literal/length/eob tree */
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inflate_huft *dtree; /* distance tree */
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};
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inflate_codes_statef *inflate_codes_new(unsigned int bl, unsigned int bd, inflate_huft *tl, inflate_huft *td, z_streamp z)
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{
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inflate_codes_statef *c;
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if ((c = (inflate_codes_statef *)ZALLOC(z,1,sizeof(struct inflate_codes_state))) != 0)
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{
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c->mode = START;
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c->lbits = (Byte)bl;
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c->dbits = (Byte)bd;
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c->ltree = tl;
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c->dtree = td;
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}
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return c;
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}
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/* inffast.c -- process literals and length/distance pairs fast
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* Copyright (C) 1995-2002 Mark Adler
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* For conditions of distribution and use, see copyright notice in zlib.h
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*/
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static int inflate_fast(unsigned int bl, unsigned int bd, inflate_huft *tl, inflate_huft *td, inflate_blocks_statef *s, z_streamp z)
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{
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inflate_huft *t; /* temporary pointer */
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unsigned int e; /* extra bits or operation */
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unsigned long b; /* bit buffer */
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unsigned int k; /* bits in bit buffer */
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Bytef *p; /* input data pointer */
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unsigned int n; /* bytes available there */
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Bytef *q; /* output window write pointer */
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unsigned int m; /* bytes to end of window or read pointer */
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unsigned int ml; /* mask for literal/length tree */
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unsigned int md; /* mask for distance tree */
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unsigned int c; /* bytes to copy */
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unsigned int d; /* distance back to copy from */
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Bytef *r; /* copy source pointer */
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/* load input, output, bit values */
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LOAD
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/* initialize masks */
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ml = inflate_mask[bl];
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md = inflate_mask[bd];
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/* do until not enough input or output space for fast loop */
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do
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{ /* assume called with m >= 258 && n >= 10 */
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/* get literal/length code */
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while(k<(20)){b|=((unsigned long)NEXTBYTE)<<k;k+=8;} /* max bits for literal/length code */
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if ((e = (t = tl + ((unsigned int)b & ml))->word.what.Exop) == 0)
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{
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DUMPBITS(t->word.what.Bits)
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*q++ = (Byte)t->base;
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m--;
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continue;
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}
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do
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{
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DUMPBITS(t->word.what.Bits)
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if (e & 16)
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{
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/* get extra bits for length */
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e &= 15;
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c = t->base + ((unsigned int)b & inflate_mask[e]);
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DUMPBITS(e)
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/* decode distance base of block to copy */
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while(k<(15)){b|=((unsigned long)NEXTBYTE)<<k;k+=8;} /* max bits for distance code */
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e = (t = td + ((unsigned int)b & md))->word.what.Exop;
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do
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{
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DUMPBITS(t->word.what.Bits)
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if (e & 16)
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{
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/* get extra bits to add to distance base */
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e &= 15;
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while(k<(e)){b|=((unsigned long)NEXTBYTE)<<k;k+=8;} /* get extra bits (up to 13) */
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d = t->base + ((unsigned int)b & inflate_mask[e]);
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DUMPBITS(e)
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/* do the copy */
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m -= c;
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r = q - d;
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if (r < s->window) /* wrap if needed */
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{
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do {
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r += s->end - s->window; /* force pointer in window */
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} while (r < s->window); /* covers invalid distances */
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e = s->end - r;
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if (c > e)
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{
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c -= e; /* wrapped copy */
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do {
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*q++ = *r++;
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} while (--e);
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r = s->window;
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do {
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*q++ = *r++;
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} while (--c);
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}
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else /* normal copy */
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{
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*q++ = *r++; c--;
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*q++ = *r++; c--;
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do {
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*q++ = *r++;
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} while (--c);
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}
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}
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else /* normal copy */
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{
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*q++ = *r++; c--;
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*q++ = *r++; c--;
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do {
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*q++ = *r++;
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} while (--c);
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}
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break;
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}
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else if ((e & 64) == 0)
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{
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t += t->base;
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e = (t += ((unsigned int)b & inflate_mask[e]))->word.what.Exop;
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}
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else
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{
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z->msg = (char*)"invalid distance code";
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c = z->avail_in-n;
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c = (k >> 3) < c ? k >> 3 : c;
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n+=c;
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p-=c;
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k-=c<<3;
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UPDATE
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return Z_DATA_ERROR;
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}
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}while (1);
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break;
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}
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if ((e & 64) == 0)
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{
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t += t->base;
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if ((e = (t += ((unsigned int)b & inflate_mask[e]))->word.what.Exop) == 0)
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{
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DUMPBITS(t->word.what.Bits)
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*q++ = (Byte)t->base;
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m--;
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break;
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}
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}
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else if (e & 32)
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{
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c = z->avail_in-n;
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c = (k >> 3) < c ? k >> 3 : c;
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n+=c;
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p-=c;
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k-=c<<3;
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UPDATE
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return Z_STREAM_END;
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}
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else
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{
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z->msg = (char*)"invalid literal/length code";
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c = z->avail_in-n;
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c = (k >> 3) < c ? k >> 3 : c;
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n+=c;
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p-=c;
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k-=c<<3;
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UPDATE
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return Z_DATA_ERROR;
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}
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}while (1);
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} while (m >= 258 && n >= 10);
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/* not enough input or output--restore pointers and return */
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c = z->avail_in-n;
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c = (k >> 3) < c ? k >> 3 : c;
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n+=c;
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p-=c;
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k-=c<<3;
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UPDATE
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return Z_OK;
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}
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int inflate_codes(inflate_blocks_statef *s, z_streamp z, int r)
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{
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unsigned int j; /* temporary storage */
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inflate_huft *t; /* temporary pointer */
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unsigned int e; /* extra bits or operation */
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unsigned long b; /* bit buffer */
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unsigned int k; /* bits in bit buffer */
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Bytef *p; /* input data pointer */
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unsigned int n; /* bytes available there */
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Bytef *q; /* output window write pointer */
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unsigned int m; /* bytes to end of window or read pointer */
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Bytef *f; /* pointer to copy strings from */
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inflate_codes_statef *c = s->sub.decode.codes; /* codes state */
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/* copy input/output information to locals (UPDATE macro restores) */
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LOAD
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/* process input and output based on current state */
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while (1) switch (c->mode)
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{ /* waiting for "i:"=input, "o:"=output, "x:"=nothing */
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case START: /* x: set up for LEN */
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if (m >= 258 && n >= 10)
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{
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UPDATE
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r = inflate_fast(c->lbits, c->dbits, c->ltree, c->dtree, s, z);
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LOAD
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if (r != Z_OK)
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{
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c->mode = r == Z_STREAM_END ? WASH : BADCODE;
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break;
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}
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}
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c->sub.code.need = c->lbits;
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c->sub.code.tree = c->ltree;
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c->mode = LEN;
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case LEN: /* i: get length/literal/eob next */
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j = c->sub.code.need;
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NEEDBITS(j)
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t = c->sub.code.tree + ((unsigned int)b & inflate_mask[j]);
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DUMPBITS(t->word.what.Bits)
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e = (unsigned int)(t->word.what.Exop);
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if (e == 0) /* literal */
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{
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c->sub.lit = t->base;
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c->mode = LIT;
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break;
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}
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if (e & 16) /* length */
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{
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c->sub.copy.get = e & 15;
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c->len = t->base;
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c->mode = LENEXT;
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break;
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}
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if ((e & 64) == 0) /* next table */
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{
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c->sub.code.need = e;
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c->sub.code.tree = t + t->base;
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break;
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}
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if (e & 32) /* end of block */
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{
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c->mode = WASH;
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break;
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}
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c->mode = BADCODE; /* invalid code */
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z->msg = (char*)"invalid literal/length code";
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r = Z_DATA_ERROR;
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LEAVE
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case LENEXT: /* i: getting length extra (have base) */
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j = c->sub.copy.get;
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NEEDBITS(j)
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c->len += (unsigned int)b & inflate_mask[j];
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DUMPBITS(j)
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c->sub.code.need = c->dbits;
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c->sub.code.tree = c->dtree;
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c->mode = DIST;
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case DIST: /* i: get distance next */
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j = c->sub.code.need;
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NEEDBITS(j)
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t = c->sub.code.tree + ((unsigned int)b & inflate_mask[j]);
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DUMPBITS(t->word.what.Bits)
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e = (unsigned int)(t->word.what.Exop);
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if (e & 16) /* distance */
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{
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c->sub.copy.get = e & 15;
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c->sub.copy.dist = t->base;
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c->mode = DISTEXT;
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break;
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}
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if ((e & 64) == 0) /* next table */
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{
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c->sub.code.need = e;
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c->sub.code.tree = t + t->base;
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break;
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}
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c->mode = BADCODE; /* invalid code */
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z->msg = (char*)"invalid distance code";
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r = Z_DATA_ERROR;
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LEAVE
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case DISTEXT: /* i: getting distance extra */
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j = c->sub.copy.get;
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NEEDBITS(j)
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c->sub.copy.dist += (unsigned int)b & inflate_mask[j];
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DUMPBITS(j)
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c->mode = COPY;
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case COPY: /* o: copying bytes in window, waiting for space */
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f = q - c->sub.copy.dist;
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while (f < s->window) /* modulo window size-"while" instead */
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f += s->end - s->window; /* of "if" handles invalid distances */
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while (c->len)
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{
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NEEDOUT
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OUTBYTE(*f++)
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if (f == s->end)
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f = s->window;
|
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c->len--;
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}
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c->mode = START;
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break;
|
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case LIT: /* o: got literal, waiting for output space */
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NEEDOUT
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OUTBYTE(c->sub.lit)
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c->mode = START;
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break;
|
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case WASH: /* o: got eob, possibly more output */
|
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if (k > 7) /* return unused byte, if any */
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{
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k -= 8;
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n++;
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p--; /* can always return one */
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}
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FLUSH
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if (s->read != s->write)
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LEAVE
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c->mode = END;
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case END:
|
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r = Z_STREAM_END;
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LEAVE
|
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case BADCODE: /* x: got error */
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r = Z_DATA_ERROR;
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LEAVE
|
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default:
|
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r = Z_STREAM_ERROR;
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LEAVE
|
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}
|
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}
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|
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/* inftrees.c -- generate Huffman trees for efficient decoding
|
|
* Copyright (C) 1995-2002 Mark Adler
|
|
* For conditions of distribution and use, see copyright notice in zlib.h
|
|
*/
|
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|
|
static int huft_build(unsigned int *b, unsigned int n, unsigned int s, const unsigned int *d, const unsigned int *e, inflate_huft **t, unsigned int *m, inflate_huft *hp, unsigned int *hn, unsigned int *v)
|
|
{
|
|
unsigned int a; /* counter for codes of length k */
|
|
unsigned int c[BMAX+1]; /* bit length count table */
|
|
unsigned int f; /* i repeats in table every f entries */
|
|
int g; /* maximum code length */
|
|
int h; /* table level */
|
|
register unsigned int i; /* counter, current code */
|
|
register unsigned int j; /* counter */
|
|
register int k; /* number of bits in current code */
|
|
int l; /* bits per table (returned in m) */
|
|
unsigned int mask; /* (1 << w) - 1, to avoid cc -O bug on HP */
|
|
register unsigned int *p; /* pointer into c[], b[], or v[] */
|
|
inflate_huft *q; /* points to current table */
|
|
struct inflate_huft_s r; /* table entry for structure assignment */
|
|
inflate_huft *u[BMAX]; /* table stack */
|
|
register int w; /* bits before this table == (l * h) */
|
|
unsigned int x[BMAX+1]; /* bit offsets, then code stack */
|
|
unsigned int *xp; /* pointer into x */
|
|
int y; /* number of dummy codes added */
|
|
unsigned int z; /* number of entries in current table */
|
|
|
|
|
|
/* Generate counts for each bit length */
|
|
p = c;
|
|
#define C0_INFTREES *p++ = 0;
|
|
#define C2_INFTREES C0_INFTREES C0_INFTREES C0_INFTREES C0_INFTREES
|
|
#define C4_INFTREES C2_INFTREES C2_INFTREES C2_INFTREES C2_INFTREES
|
|
C4_INFTREES /* clear c[]--assume BMAX+1 is 16 */
|
|
p = b; i = n;
|
|
do {
|
|
c[*p++]++; /* assume all entries <= BMAX */
|
|
} while (--i);
|
|
if (c[0] == n) /* null input--all zero length codes */
|
|
{
|
|
*t = (inflate_huft *)0;
|
|
*m = 0;
|
|
return Z_OK;
|
|
}
|
|
|
|
|
|
/* Find minimum and maximum length, bound *m by those */
|
|
l = *m;
|
|
for (j = 1; j <= BMAX; j++)
|
|
if (c[j])
|
|
break;
|
|
k = j; /* minimum code length */
|
|
if ((unsigned int)l < j)
|
|
l = j;
|
|
for (i = BMAX; i; i--)
|
|
if (c[i])
|
|
break;
|
|
g = i; /* maximum code length */
|
|
if ((unsigned int)l > i)
|
|
l = i;
|
|
*m = l;
|
|
|
|
|
|
/* Adjust last length count to fill out codes, if needed */
|
|
for (y = 1 << j; j < i; j++, y <<= 1)
|
|
if ((y -= c[j]) < 0)
|
|
return Z_DATA_ERROR;
|
|
if ((y -= c[i]) < 0)
|
|
return Z_DATA_ERROR;
|
|
c[i] += y;
|
|
|
|
|
|
/* Generate starting offsets into the value table for each length */
|
|
x[1] = j = 0;
|
|
p = c + 1; xp = x + 2;
|
|
while (--i) { /* note that i == g from above */
|
|
*xp++ = (j += *p++);
|
|
}
|
|
|
|
|
|
/* Make a table of values in order of bit lengths */
|
|
p = b; i = 0;
|
|
do {
|
|
if ((j = *p++) != 0)
|
|
v[x[j]++] = i;
|
|
} while (++i < n);
|
|
n = x[g]; /* set n to length of v */
|
|
|
|
|
|
/* Generate the Huffman codes and for each, make the table entries */
|
|
x[0] = i = 0; /* first Huffman code is zero */
|
|
p = v; /* grab values in bit order */
|
|
h = -1; /* no tables yet--level -1 */
|
|
w = -l; /* bits decoded == (l * h) */
|
|
u[0] = (inflate_huft *)0; /* just to keep compilers happy */
|
|
q = (inflate_huft *)0; /* ditto */
|
|
z = 0; /* ditto */
|
|
|
|
/* go through the bit lengths (k already is bits in shortest code) */
|
|
for (; k <= g; k++)
|
|
{
|
|
a = c[k];
|
|
while (a--)
|
|
{
|
|
/* here i is the Huffman code of length k bits for value *p */
|
|
/* make tables up to required level */
|
|
while (k > w + l)
|
|
{
|
|
h++;
|
|
w += l; /* previous table always l bits */
|
|
|
|
/* compute minimum size table less than or equal to l bits */
|
|
z = g - w;
|
|
z = z > (unsigned int)l ? l : z; /* table size upper limit */
|
|
if ((f = 1 << (j = k - w)) > a + 1) /* try a k-w bit table */
|
|
{ /* too few codes for k-w bit table */
|
|
f -= a + 1; /* deduct codes from patterns left */
|
|
xp = c + k;
|
|
if (j < z)
|
|
while (++j < z) /* try smaller tables up to z bits */
|
|
{
|
|
if ((f <<= 1) <= *++xp)
|
|
break; /* enough codes to use up j bits */
|
|
f -= *xp; /* else deduct codes from patterns */
|
|
}
|
|
}
|
|
z = 1 << j; /* table entries for j-bit table */
|
|
|
|
/* allocate new table */
|
|
if (*hn + z > MANY) /* (note: doesn't matter for fixed) */
|
|
return Z_DATA_ERROR; /* overflow of MANY */
|
|
u[h] = q = hp + *hn;
|
|
*hn += z;
|
|
|
|
/* connect to last table, if there is one */
|
|
if (h)
|
|
{
|
|
x[h] = i; /* save pattern for backing up */
|
|
r.word.what.Bits = (Byte)l; /* bits to dump before this table */
|
|
r.word.what.Exop = (Byte)j; /* bits in this table */
|
|
j = i >> (w - l);
|
|
r.base = (unsigned int)(q - u[h-1] - j); /* offset to this table */
|
|
u[h-1][j] = r; /* connect to last table */
|
|
}
|
|
else
|
|
*t = q; /* first table is returned result */
|
|
}
|
|
|
|
/* set up table entry in r */
|
|
r.word.what.Bits = (Byte)(k - w);
|
|
if (p >= v + n)
|
|
r.word.what.Exop = 128 + 64; /* out of values--invalid code */
|
|
else if (*p < s)
|
|
{
|
|
r.word.what.Exop = (Byte)(*p < 256 ? 0 : 32 + 64); /* 256 is end-of-block */
|
|
r.base = *p++; /* simple code is just the value */
|
|
}
|
|
else
|
|
{
|
|
r.word.what.Exop = (Byte)(e[*p - s] + 16 + 64);/* non-simple--look up in lists */
|
|
r.base = d[*p++ - s];
|
|
}
|
|
|
|
/* fill code-like entries with r */
|
|
f = 1 << (k - w);
|
|
for (j = i >> w; j < z; j += f)
|
|
q[j] = r;
|
|
|
|
/* backwards increment the k-bit code i */
|
|
for (j = 1 << (k - 1); i & j; j >>= 1)
|
|
i ^= j;
|
|
i ^= j;
|
|
|
|
/* backup over finished tables */
|
|
mask = (1 << w) - 1; /* needed on HP, cc -O bug */
|
|
while ((i & mask) != x[h])
|
|
{
|
|
h--; /* don't need to update q */
|
|
w -= l;
|
|
mask = (1 << w) - 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/* Return Z_BUF_ERROR if we were given an incomplete table */
|
|
return y != 0 && g != 1 ? Z_BUF_ERROR : Z_OK;
|
|
}
|
|
|
|
|
|
int inflate_trees_bits(unsigned int *c, unsigned int *bb, inflate_huft **tb, inflate_huft *hp, z_streamp z)
|
|
{
|
|
int r;
|
|
unsigned int hn = 0; /* hufts used in space */
|
|
unsigned int *v; /* work area for huft_build */
|
|
|
|
if ((v = (unsigned int*)ZALLOC(z, 19, sizeof(unsigned int))) == 0)
|
|
return Z_MEM_ERROR;
|
|
r = huft_build(c, 19, 19, (unsigned int*)0, (unsigned int*)0,
|
|
tb, bb, hp, &hn, v);
|
|
if (r == Z_DATA_ERROR)
|
|
z->msg = (char*)"oversubscribed dynamic bit lengths tree";
|
|
else if (r == Z_BUF_ERROR || *bb == 0)
|
|
{
|
|
z->msg = (char*)"incomplete dynamic bit lengths tree";
|
|
r = Z_DATA_ERROR;
|
|
}
|
|
ZFREE(z, v);
|
|
return r;
|
|
}
|
|
|
|
|
|
int inflate_trees_dynamic(unsigned int nl, unsigned int nd, unsigned int *c, unsigned int *bl, unsigned int *bd, inflate_huft **tl, inflate_huft **td, inflate_huft *hp, z_streamp z)
|
|
{
|
|
int r;
|
|
unsigned int hn = 0; /* hufts used in space */
|
|
unsigned int *v; /* work area for huft_build */
|
|
|
|
/* allocate work area */
|
|
if ((v = (unsigned int*)ZALLOC(z, 288, sizeof(unsigned int))) == 0)
|
|
return Z_MEM_ERROR;
|
|
|
|
/* build literal/length tree */
|
|
r = huft_build(c, nl, 257, cplens, cplext, tl, bl, hp, &hn, v);
|
|
if (r != Z_OK || *bl == 0)
|
|
{
|
|
if (r == Z_DATA_ERROR)
|
|
z->msg = (char*)"oversubscribed literal/length tree";
|
|
else if (r != Z_MEM_ERROR)
|
|
{
|
|
z->msg = (char*)"incomplete literal/length tree";
|
|
r = Z_DATA_ERROR;
|
|
}
|
|
ZFREE(z, v);
|
|
return r;
|
|
}
|
|
|
|
/* build distance tree */
|
|
r = huft_build(c + nl, nd, 0, cpdist, cpdext, td, bd, hp, &hn, v);
|
|
if (r != Z_OK || (*bd == 0 && nl > 257))
|
|
{
|
|
if (r == Z_DATA_ERROR)
|
|
z->msg = (char*)"oversubscribed distance tree";
|
|
else if (r == Z_BUF_ERROR) {
|
|
z->msg = (char*)"incomplete distance tree";
|
|
r = Z_DATA_ERROR;
|
|
}
|
|
else if (r != Z_MEM_ERROR)
|
|
{
|
|
z->msg = (char*)"empty distance tree with lengths";
|
|
r = Z_DATA_ERROR;
|
|
}
|
|
ZFREE(z, v);
|
|
return r;
|
|
}
|
|
|
|
/* done */
|
|
ZFREE(z, v);
|
|
return Z_OK;
|
|
}
|
|
|
|
#define FIXED_BL 9
|
|
#define FIXED_BD 5
|
|
|
|
inflate_huft fixed_tl[] = {
|
|
{{{96,7}},256}, {{{0,8}},80}, {{{0,8}},16}, {{{84,8}},115},
|
|
{{{82,7}},31}, {{{0,8}},112}, {{{0,8}},48}, {{{0,9}},192},
|
|
{{{80,7}},10}, {{{0,8}},96}, {{{0,8}},32}, {{{0,9}},160},
|
|
{{{0,8}},0}, {{{0,8}},128}, {{{0,8}},64}, {{{0,9}},224},
|
|
{{{80,7}},6}, {{{0,8}},88}, {{{0,8}},24}, {{{0,9}},144},
|
|
{{{83,7}},59}, {{{0,8}},120}, {{{0,8}},56}, {{{0,9}},208},
|
|
{{{81,7}},17}, {{{0,8}},104}, {{{0,8}},40}, {{{0,9}},176},
|
|
{{{0,8}},8}, {{{0,8}},136}, {{{0,8}},72}, {{{0,9}},240},
|
|
{{{80,7}},4}, {{{0,8}},84}, {{{0,8}},20}, {{{85,8}},227},
|
|
{{{83,7}},43}, {{{0,8}},116}, {{{0,8}},52}, {{{0,9}},200},
|
|
{{{81,7}},13}, {{{0,8}},100}, {{{0,8}},36}, {{{0,9}},168},
|
|
{{{0,8}},4}, {{{0,8}},132}, {{{0,8}},68}, {{{0,9}},232},
|
|
{{{80,7}},8}, {{{0,8}},92}, {{{0,8}},28}, {{{0,9}},152},
|
|
{{{84,7}},83}, {{{0,8}},124}, {{{0,8}},60}, {{{0,9}},216},
|
|
{{{82,7}},23}, {{{0,8}},108}, {{{0,8}},44}, {{{0,9}},184},
|
|
{{{0,8}},12}, {{{0,8}},140}, {{{0,8}},76}, {{{0,9}},248},
|
|
{{{80,7}},3}, {{{0,8}},82}, {{{0,8}},18}, {{{85,8}},163},
|
|
{{{83,7}},35}, {{{0,8}},114}, {{{0,8}},50}, {{{0,9}},196},
|
|
{{{81,7}},11}, {{{0,8}},98}, {{{0,8}},34}, {{{0,9}},164},
|
|
{{{0,8}},2}, {{{0,8}},130}, {{{0,8}},66}, {{{0,9}},228},
|
|
{{{80,7}},7}, {{{0,8}},90}, {{{0,8}},26}, {{{0,9}},148},
|
|
{{{84,7}},67}, {{{0,8}},122}, {{{0,8}},58}, {{{0,9}},212},
|
|
{{{82,7}},19}, {{{0,8}},106}, {{{0,8}},42}, {{{0,9}},180},
|
|
{{{0,8}},10}, {{{0,8}},138}, {{{0,8}},74}, {{{0,9}},244},
|
|
{{{80,7}},5}, {{{0,8}},86}, {{{0,8}},22}, {{{192,8}},0},
|
|
{{{83,7}},51}, {{{0,8}},118}, {{{0,8}},54}, {{{0,9}},204},
|
|
{{{81,7}},15}, {{{0,8}},102}, {{{0,8}},38}, {{{0,9}},172},
|
|
{{{0,8}},6}, {{{0,8}},134}, {{{0,8}},70}, {{{0,9}},236},
|
|
{{{80,7}},9}, {{{0,8}},94}, {{{0,8}},30}, {{{0,9}},156},
|
|
{{{84,7}},99}, {{{0,8}},126}, {{{0,8}},62}, {{{0,9}},220},
|
|
{{{82,7}},27}, {{{0,8}},110}, {{{0,8}},46}, {{{0,9}},188},
|
|
{{{0,8}},14}, {{{0,8}},142}, {{{0,8}},78}, {{{0,9}},252},
|
|
{{{96,7}},256}, {{{0,8}},81}, {{{0,8}},17}, {{{85,8}},131},
|
|
{{{82,7}},31}, {{{0,8}},113}, {{{0,8}},49}, {{{0,9}},194},
|
|
{{{80,7}},10}, {{{0,8}},97}, {{{0,8}},33}, {{{0,9}},162},
|
|
{{{0,8}},1}, {{{0,8}},129}, {{{0,8}},65}, {{{0,9}},226},
|
|
{{{80,7}},6}, {{{0,8}},89}, {{{0,8}},25}, {{{0,9}},146},
|
|
{{{83,7}},59}, {{{0,8}},121}, {{{0,8}},57}, {{{0,9}},210},
|
|
{{{81,7}},17}, {{{0,8}},105}, {{{0,8}},41}, {{{0,9}},178},
|
|
{{{0,8}},9}, {{{0,8}},137}, {{{0,8}},73}, {{{0,9}},242},
|
|
{{{80,7}},4}, {{{0,8}},85}, {{{0,8}},21}, {{{80,8}},258},
|
|
{{{83,7}},43}, {{{0,8}},117}, {{{0,8}},53}, {{{0,9}},202},
|
|
{{{81,7}},13}, {{{0,8}},101}, {{{0,8}},37}, {{{0,9}},170},
|
|
{{{0,8}},5}, {{{0,8}},133}, {{{0,8}},69}, {{{0,9}},234},
|
|
{{{80,7}},8}, {{{0,8}},93}, {{{0,8}},29}, {{{0,9}},154},
|
|
{{{84,7}},83}, {{{0,8}},125}, {{{0,8}},61}, {{{0,9}},218},
|
|
{{{82,7}},23}, {{{0,8}},109}, {{{0,8}},45}, {{{0,9}},186},
|
|
{{{0,8}},13}, {{{0,8}},141}, {{{0,8}},77}, {{{0,9}},250},
|
|
{{{80,7}},3}, {{{0,8}},83}, {{{0,8}},19}, {{{85,8}},195},
|
|
{{{83,7}},35}, {{{0,8}},115}, {{{0,8}},51}, {{{0,9}},198},
|
|
{{{81,7}},11}, {{{0,8}},99}, {{{0,8}},35}, {{{0,9}},166},
|
|
{{{0,8}},3}, {{{0,8}},131}, {{{0,8}},67}, {{{0,9}},230},
|
|
{{{80,7}},7}, {{{0,8}},91}, {{{0,8}},27}, {{{0,9}},150},
|
|
{{{84,7}},67}, {{{0,8}},123}, {{{0,8}},59}, {{{0,9}},214},
|
|
{{{82,7}},19}, {{{0,8}},107}, {{{0,8}},43}, {{{0,9}},182},
|
|
{{{0,8}},11}, {{{0,8}},139}, {{{0,8}},75}, {{{0,9}},246},
|
|
{{{80,7}},5}, {{{0,8}},87}, {{{0,8}},23}, {{{192,8}},0},
|
|
{{{83,7}},51}, {{{0,8}},119}, {{{0,8}},55}, {{{0,9}},206},
|
|
{{{81,7}},15}, {{{0,8}},103}, {{{0,8}},39}, {{{0,9}},174},
|
|
{{{0,8}},7}, {{{0,8}},135}, {{{0,8}},71}, {{{0,9}},238},
|
|
{{{80,7}},9}, {{{0,8}},95}, {{{0,8}},31}, {{{0,9}},158},
|
|
{{{84,7}},99}, {{{0,8}},127}, {{{0,8}},63}, {{{0,9}},222},
|
|
{{{82,7}},27}, {{{0,8}},111}, {{{0,8}},47}, {{{0,9}},190},
|
|
{{{0,8}},15}, {{{0,8}},143}, {{{0,8}},79}, {{{0,9}},254},
|
|
{{{96,7}},256}, {{{0,8}},80}, {{{0,8}},16}, {{{84,8}},115},
|
|
{{{82,7}},31}, {{{0,8}},112}, {{{0,8}},48}, {{{0,9}},193},
|
|
{{{80,7}},10}, {{{0,8}},96}, {{{0,8}},32}, {{{0,9}},161},
|
|
{{{0,8}},0}, {{{0,8}},128}, {{{0,8}},64}, {{{0,9}},225},
|
|
{{{80,7}},6}, {{{0,8}},88}, {{{0,8}},24}, {{{0,9}},145},
|
|
{{{83,7}},59}, {{{0,8}},120}, {{{0,8}},56}, {{{0,9}},209},
|
|
{{{81,7}},17}, {{{0,8}},104}, {{{0,8}},40}, {{{0,9}},177},
|
|
{{{0,8}},8}, {{{0,8}},136}, {{{0,8}},72}, {{{0,9}},241},
|
|
{{{80,7}},4}, {{{0,8}},84}, {{{0,8}},20}, {{{85,8}},227},
|
|
{{{83,7}},43}, {{{0,8}},116}, {{{0,8}},52}, {{{0,9}},201},
|
|
{{{81,7}},13}, {{{0,8}},100}, {{{0,8}},36}, {{{0,9}},169},
|
|
{{{0,8}},4}, {{{0,8}},132}, {{{0,8}},68}, {{{0,9}},233},
|
|
{{{80,7}},8}, {{{0,8}},92}, {{{0,8}},28}, {{{0,9}},153},
|
|
{{{84,7}},83}, {{{0,8}},124}, {{{0,8}},60}, {{{0,9}},217},
|
|
{{{82,7}},23}, {{{0,8}},108}, {{{0,8}},44}, {{{0,9}},185},
|
|
{{{0,8}},12}, {{{0,8}},140}, {{{0,8}},76}, {{{0,9}},249},
|
|
{{{80,7}},3}, {{{0,8}},82}, {{{0,8}},18}, {{{85,8}},163},
|
|
{{{83,7}},35}, {{{0,8}},114}, {{{0,8}},50}, {{{0,9}},197},
|
|
{{{81,7}},11}, {{{0,8}},98}, {{{0,8}},34}, {{{0,9}},165},
|
|
{{{0,8}},2}, {{{0,8}},130}, {{{0,8}},66}, {{{0,9}},229},
|
|
{{{80,7}},7}, {{{0,8}},90}, {{{0,8}},26}, {{{0,9}},149},
|
|
{{{84,7}},67}, {{{0,8}},122}, {{{0,8}},58}, {{{0,9}},213},
|
|
{{{82,7}},19}, {{{0,8}},106}, {{{0,8}},42}, {{{0,9}},181},
|
|
{{{0,8}},10}, {{{0,8}},138}, {{{0,8}},74}, {{{0,9}},245},
|
|
{{{80,7}},5}, {{{0,8}},86}, {{{0,8}},22}, {{{192,8}},0},
|
|
{{{83,7}},51}, {{{0,8}},118}, {{{0,8}},54}, {{{0,9}},205},
|
|
{{{81,7}},15}, {{{0,8}},102}, {{{0,8}},38}, {{{0,9}},173},
|
|
{{{0,8}},6}, {{{0,8}},134}, {{{0,8}},70}, {{{0,9}},237},
|
|
{{{80,7}},9}, {{{0,8}},94}, {{{0,8}},30}, {{{0,9}},157},
|
|
{{{84,7}},99}, {{{0,8}},126}, {{{0,8}},62}, {{{0,9}},221},
|
|
{{{82,7}},27}, {{{0,8}},110}, {{{0,8}},46}, {{{0,9}},189},
|
|
{{{0,8}},14}, {{{0,8}},142}, {{{0,8}},78}, {{{0,9}},253},
|
|
{{{96,7}},256}, {{{0,8}},81}, {{{0,8}},17}, {{{85,8}},131},
|
|
{{{82,7}},31}, {{{0,8}},113}, {{{0,8}},49}, {{{0,9}},195},
|
|
{{{80,7}},10}, {{{0,8}},97}, {{{0,8}},33}, {{{0,9}},163},
|
|
{{{0,8}},1}, {{{0,8}},129}, {{{0,8}},65}, {{{0,9}},227},
|
|
{{{80,7}},6}, {{{0,8}},89}, {{{0,8}},25}, {{{0,9}},147},
|
|
{{{83,7}},59}, {{{0,8}},121}, {{{0,8}},57}, {{{0,9}},211},
|
|
{{{81,7}},17}, {{{0,8}},105}, {{{0,8}},41}, {{{0,9}},179},
|
|
{{{0,8}},9}, {{{0,8}},137}, {{{0,8}},73}, {{{0,9}},243},
|
|
{{{80,7}},4}, {{{0,8}},85}, {{{0,8}},21}, {{{80,8}},258},
|
|
{{{83,7}},43}, {{{0,8}},117}, {{{0,8}},53}, {{{0,9}},203},
|
|
{{{81,7}},13}, {{{0,8}},101}, {{{0,8}},37}, {{{0,9}},171},
|
|
{{{0,8}},5}, {{{0,8}},133}, {{{0,8}},69}, {{{0,9}},235},
|
|
{{{80,7}},8}, {{{0,8}},93}, {{{0,8}},29}, {{{0,9}},155},
|
|
{{{84,7}},83}, {{{0,8}},125}, {{{0,8}},61}, {{{0,9}},219},
|
|
{{{82,7}},23}, {{{0,8}},109}, {{{0,8}},45}, {{{0,9}},187},
|
|
{{{0,8}},13}, {{{0,8}},141}, {{{0,8}},77}, {{{0,9}},251},
|
|
{{{80,7}},3}, {{{0,8}},83}, {{{0,8}},19}, {{{85,8}},195},
|
|
{{{83,7}},35}, {{{0,8}},115}, {{{0,8}},51}, {{{0,9}},199},
|
|
{{{81,7}},11}, {{{0,8}},99}, {{{0,8}},35}, {{{0,9}},167},
|
|
{{{0,8}},3}, {{{0,8}},131}, {{{0,8}},67}, {{{0,9}},231},
|
|
{{{80,7}},7}, {{{0,8}},91}, {{{0,8}},27}, {{{0,9}},151},
|
|
{{{84,7}},67}, {{{0,8}},123}, {{{0,8}},59}, {{{0,9}},215},
|
|
{{{82,7}},19}, {{{0,8}},107}, {{{0,8}},43}, {{{0,9}},183},
|
|
{{{0,8}},11}, {{{0,8}},139}, {{{0,8}},75}, {{{0,9}},247},
|
|
{{{80,7}},5}, {{{0,8}},87}, {{{0,8}},23}, {{{192,8}},0},
|
|
{{{83,7}},51}, {{{0,8}},119}, {{{0,8}},55}, {{{0,9}},207},
|
|
{{{81,7}},15}, {{{0,8}},103}, {{{0,8}},39}, {{{0,9}},175},
|
|
{{{0,8}},7}, {{{0,8}},135}, {{{0,8}},71}, {{{0,9}},239},
|
|
{{{80,7}},9}, {{{0,8}},95}, {{{0,8}},31}, {{{0,9}},159},
|
|
{{{84,7}},99}, {{{0,8}},127}, {{{0,8}},63}, {{{0,9}},223},
|
|
{{{82,7}},27}, {{{0,8}},111}, {{{0,8}},47}, {{{0,9}},191},
|
|
{{{0,8}},15}, {{{0,8}},143}, {{{0,8}},79}, {{{0,9}},255}
|
|
};
|
|
|
|
inflate_huft fixed_td[] = {
|
|
{{{80,5}},1}, {{{87,5}},257}, {{{83,5}},17}, {{{91,5}},4097},
|
|
{{{81,5}},5}, {{{89,5}},1025}, {{{85,5}},65}, {{{93,5}},16385},
|
|
{{{80,5}},3}, {{{88,5}},513}, {{{84,5}},33}, {{{92,5}},8193},
|
|
{{{82,5}},9}, {{{90,5}},2049}, {{{86,5}},129}, {{{192,5}},24577},
|
|
{{{80,5}},2}, {{{87,5}},385}, {{{83,5}},25}, {{{91,5}},6145},
|
|
{{{81,5}},7}, {{{89,5}},1537}, {{{85,5}},97}, {{{93,5}},24577},
|
|
{{{80,5}},4}, {{{88,5}},769}, {{{84,5}},49}, {{{92,5}},12289},
|
|
{{{82,5}},13}, {{{90,5}},3073}, {{{86,5}},193}, {{{192,5}},24577}
|
|
};
|
|
|
|
int inflate_trees_fixed(unsigned int * bl, unsigned int *bd, inflate_huft ** tl, inflate_huft ** td, z_streamp z)
|
|
{
|
|
*bl = FIXED_BL;
|
|
*bd = FIXED_BD;
|
|
*tl = fixed_tl;
|
|
*td = fixed_td;
|
|
|
|
return Z_OK;
|
|
}
|
|
|
|
/* infblock.c -- interpret and process block types to last block
|
|
* Copyright (C) 1995-2002 Mark Adler
|
|
* For conditions of distribution and use, see copyright notice in zlib.h
|
|
*/
|
|
|
|
void inflate_blocks_reset(inflate_blocks_statef *s, z_streamp z, unsigned long *c)
|
|
{
|
|
if (c != 0)
|
|
*c = s->check;
|
|
if (s->mode == BTREE || s->mode == DTREE)
|
|
ZFREE(z, s->sub.trees.blens);
|
|
if (s->mode == CODES)
|
|
ZFREE(z, s->sub.decode.codes);
|
|
s->mode = TYPE;
|
|
s->bitk = 0;
|
|
s->bitb = 0;
|
|
s->read = s->write = s->window;
|
|
if (s->checkfn != 0)
|
|
z->adler = s->check = (*s->checkfn)(0L, (const Bytef *)0, 0);
|
|
}
|
|
|
|
inflate_blocks_statef *inflate_blocks_new(z_streamp z, check_func c, unsigned int w)
|
|
{
|
|
inflate_blocks_statef *s;
|
|
|
|
if ((s = (inflate_blocks_statef *)ZALLOC(z,1,sizeof(struct inflate_blocks_state))) == 0)
|
|
return s;
|
|
if ((s->hufts = (inflate_huft *)ZALLOC(z, sizeof(inflate_huft), MANY)) == 0)
|
|
{
|
|
ZFREE(z, s);
|
|
return 0;
|
|
}
|
|
if ((s->window = (Bytef *)ZALLOC(z, 1, w)) == 0)
|
|
{
|
|
ZFREE(z, s->hufts);
|
|
ZFREE(z, s);
|
|
return 0;
|
|
}
|
|
s->end = s->window + w;
|
|
s->checkfn = c;
|
|
s->mode = TYPE;
|
|
inflate_blocks_reset(s, z, 0);
|
|
return s;
|
|
}
|
|
|
|
|
|
int inflate_blocks(inflate_blocks_statef *s, z_streamp z, int r)
|
|
{
|
|
unsigned int t; /* temporary storage */
|
|
unsigned long b; /* bit buffer */
|
|
unsigned int k; /* bits in bit buffer */
|
|
Bytef *p; /* input data pointer */
|
|
unsigned int n; /* bytes available there */
|
|
Bytef *q; /* output window write pointer */
|
|
unsigned int m; /* bytes to end of window or read pointer */
|
|
const unsigned int border[] = { 16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15};
|
|
|
|
/* copy input/output information to locals (UPDATE macro restores) */
|
|
LOAD
|
|
|
|
/* process input based on current state */
|
|
while (1) switch (s->mode)
|
|
{
|
|
case TYPE:
|
|
NEEDBITS(3)
|
|
t = (unsigned int)b & 7;
|
|
s->last = t & 1;
|
|
switch (t >> 1)
|
|
{
|
|
case 0: /* stored */
|
|
DUMPBITS(3)
|
|
t = k & 7; /* go to byte boundary */
|
|
DUMPBITS(t)
|
|
s->mode = LENS; /* get length of stored block */
|
|
break;
|
|
case 1: /* fixed */
|
|
{
|
|
unsigned int bl, bd;
|
|
inflate_huft *tl, *td;
|
|
|
|
inflate_trees_fixed(&bl, &bd, &tl, &td, z);
|
|
s->sub.decode.codes = inflate_codes_new(bl, bd, tl, td, z);
|
|
if (s->sub.decode.codes == 0)
|
|
{
|
|
r = Z_MEM_ERROR;
|
|
LEAVE
|
|
}
|
|
}
|
|
DUMPBITS(3)
|
|
s->mode = CODES;
|
|
break;
|
|
case 2: /* dynamic */
|
|
DUMPBITS(3)
|
|
s->mode = TABLE;
|
|
break;
|
|
case 3: /* illegal */
|
|
DUMPBITS(3)
|
|
s->mode = BAD;
|
|
z->msg = (char*)"invalid block type";
|
|
r = Z_DATA_ERROR;
|
|
LEAVE
|
|
}
|
|
break;
|
|
case LENS:
|
|
NEEDBITS(32)
|
|
if ((((~b) >> 16) & 0xffff) != (b & 0xffff))
|
|
{
|
|
s->mode = BAD;
|
|
z->msg = (char*)"invalid stored block lengths";
|
|
r = Z_DATA_ERROR;
|
|
LEAVE
|
|
}
|
|
s->sub.left = (unsigned int)b & 0xffff;
|
|
b = k = 0; /* dump bits */
|
|
s->mode = s->sub.left ? STORED : (s->last ? DRY : TYPE);
|
|
break;
|
|
case STORED:
|
|
if (n == 0)
|
|
LEAVE
|
|
NEEDOUT
|
|
t = s->sub.left;
|
|
if (t > n) t = n;
|
|
if (t > m) t = m;
|
|
memcpy(q, p, t);
|
|
p += t; n -= t;
|
|
q += t; m -= t;
|
|
if ((s->sub.left -= t) != 0)
|
|
break;
|
|
s->mode = s->last ? DRY : TYPE;
|
|
break;
|
|
case TABLE:
|
|
NEEDBITS(14)
|
|
s->sub.trees.table = t = (unsigned int)b & 0x3fff;
|
|
t = 258 + (t & 0x1f) + ((t >> 5) & 0x1f);
|
|
if ((s->sub.trees.blens = (unsigned int*)ZALLOC(z, t, sizeof(unsigned int))) == 0)
|
|
{
|
|
r = Z_MEM_ERROR;
|
|
LEAVE
|
|
}
|
|
DUMPBITS(14)
|
|
s->sub.trees.index = 0;
|
|
s->mode = BTREE;
|
|
case BTREE:
|
|
while (s->sub.trees.index < 4 + (s->sub.trees.table >> 10))
|
|
{
|
|
NEEDBITS(3)
|
|
s->sub.trees.blens[border[s->sub.trees.index++]] = (unsigned int)b & 7;
|
|
DUMPBITS(3)
|
|
}
|
|
while (s->sub.trees.index < 19)
|
|
s->sub.trees.blens[border[s->sub.trees.index++]] = 0;
|
|
s->sub.trees.bb = 7;
|
|
t = inflate_trees_bits(s->sub.trees.blens, &s->sub.trees.bb,
|
|
&s->sub.trees.tb, s->hufts, z);
|
|
if (t != Z_OK)
|
|
{
|
|
r = t;
|
|
if (r == Z_DATA_ERROR)
|
|
{
|
|
ZFREE(z, s->sub.trees.blens);
|
|
s->mode = BAD;
|
|
}
|
|
LEAVE
|
|
}
|
|
s->sub.trees.index = 0;
|
|
s->mode = DTREE;
|
|
case DTREE:
|
|
while (t = s->sub.trees.table,
|
|
s->sub.trees.index < 258 + (t & 0x1f) + ((t >> 5) & 0x1f))
|
|
{
|
|
inflate_huft *h;
|
|
unsigned int i, j, c;
|
|
|
|
t = s->sub.trees.bb;
|
|
NEEDBITS(t)
|
|
h = s->sub.trees.tb + ((unsigned int)b & inflate_mask[t]);
|
|
t = h->word.what.Bits;
|
|
c = h->base;
|
|
if (c < 16)
|
|
{
|
|
DUMPBITS(t)
|
|
s->sub.trees.blens[s->sub.trees.index++] = c;
|
|
}
|
|
else /* c == 16..18 */
|
|
{
|
|
i = c == 18 ? 7 : c - 14;
|
|
j = c == 18 ? 11 : 3;
|
|
NEEDBITS(t + i)
|
|
DUMPBITS(t)
|
|
j += (unsigned int)b & inflate_mask[i];
|
|
DUMPBITS(i)
|
|
i = s->sub.trees.index;
|
|
t = s->sub.trees.table;
|
|
if (i + j > 258 + (t & 0x1f) + ((t >> 5) & 0x1f) ||
|
|
(c == 16 && i < 1))
|
|
{
|
|
ZFREE(z, s->sub.trees.blens);
|
|
s->mode = BAD;
|
|
z->msg = (char*)"invalid bit length repeat";
|
|
r = Z_DATA_ERROR;
|
|
LEAVE
|
|
}
|
|
c = c == 16 ? s->sub.trees.blens[i - 1] : 0;
|
|
do {
|
|
s->sub.trees.blens[i++] = c;
|
|
} while (--j);
|
|
s->sub.trees.index = i;
|
|
}
|
|
}
|
|
s->sub.trees.tb = 0;
|
|
{
|
|
unsigned int bl, bd;
|
|
inflate_huft *tl, *td;
|
|
inflate_codes_statef *c;
|
|
|
|
bl = 9; /* must be <= 9 for lookahead assumptions */
|
|
bd = 6; /* must be <= 9 for lookahead assumptions */
|
|
t = s->sub.trees.table;
|
|
t = inflate_trees_dynamic(257 + (t & 0x1f), 1 + ((t >> 5) & 0x1f),
|
|
s->sub.trees.blens, &bl, &bd, &tl, &td,
|
|
s->hufts, z);
|
|
if (t != Z_OK)
|
|
{
|
|
if (t == (unsigned int)Z_DATA_ERROR)
|
|
{
|
|
ZFREE(z, s->sub.trees.blens);
|
|
s->mode = BAD;
|
|
}
|
|
r = t;
|
|
LEAVE
|
|
}
|
|
if ((c = inflate_codes_new(bl, bd, tl, td, z)) == 0)
|
|
{
|
|
r = Z_MEM_ERROR;
|
|
LEAVE
|
|
}
|
|
s->sub.decode.codes = c;
|
|
}
|
|
ZFREE(z, s->sub.trees.blens);
|
|
s->mode = CODES;
|
|
case CODES:
|
|
UPDATE
|
|
if ((r = inflate_codes(s, z, r)) != Z_STREAM_END)
|
|
return inflate_flush(s, z, r);
|
|
r = Z_OK;
|
|
ZFREE(z, s->sub.decode.codes);
|
|
LOAD
|
|
if (!s->last)
|
|
{
|
|
s->mode = TYPE;
|
|
break;
|
|
}
|
|
s->mode = DRY;
|
|
case DRY:
|
|
FLUSH
|
|
if (s->read != s->write)
|
|
LEAVE
|
|
s->mode = DONE;
|
|
case DONE:
|
|
r = Z_STREAM_END;
|
|
LEAVE
|
|
case BAD:
|
|
r = Z_DATA_ERROR;
|
|
LEAVE
|
|
default:
|
|
r = Z_STREAM_ERROR;
|
|
LEAVE
|
|
}
|
|
}
|
|
|
|
|
|
int inflate_blocks_free(inflate_blocks_statef *s, z_streamp z)
|
|
{
|
|
inflate_blocks_reset(s, z, 0);
|
|
ZFREE(z, s->window);
|
|
ZFREE(z, s->hufts);
|
|
ZFREE(z, s);
|
|
return Z_OK;
|
|
}
|
|
|
|
/* inflate_util.c -- data and routines common to blocks and codes
|
|
* Copyright (C) 1995-2002 Mark Adler
|
|
* For conditions of distribution and use, see copyright notice in zlib.h
|
|
*/
|
|
|
|
/* copy as much as possible from the sliding window to the output area */
|
|
int inflate_flush(inflate_blocks_statef *s, z_streamp z, int r)
|
|
{
|
|
unsigned int n;
|
|
Bytef *p;
|
|
Bytef *q;
|
|
|
|
/* local copies of source and destination pointers */
|
|
p = z->next_out;
|
|
q = s->read;
|
|
|
|
/* compute number of bytes to copy as far as end of window */
|
|
n = (unsigned int)((q <= s->write ? s->write : s->end) - q);
|
|
if (n > z->avail_out) n = z->avail_out;
|
|
if (n && r == Z_BUF_ERROR) r = Z_OK;
|
|
|
|
/* update counters */
|
|
z->avail_out -= n;
|
|
z->total_out += n;
|
|
|
|
/* update check information */
|
|
if (s->checkfn != 0)
|
|
z->adler = s->check = (*s->checkfn)(s->check, q, n);
|
|
|
|
/* copy as far as end of window */
|
|
memcpy(p, q, n);
|
|
p += n;
|
|
q += n;
|
|
|
|
/* see if more to copy at beginning of window */
|
|
if (q == s->end)
|
|
{
|
|
/* wrap pointers */
|
|
q = s->window;
|
|
if (s->write == s->end)
|
|
s->write = s->window;
|
|
|
|
/* compute bytes to copy */
|
|
n = (unsigned int)(s->write - q);
|
|
if (n > z->avail_out) n = z->avail_out;
|
|
if (n && r == Z_BUF_ERROR) r = Z_OK;
|
|
|
|
/* update counters */
|
|
z->avail_out -= n;
|
|
z->total_out += n;
|
|
|
|
/* update check information */
|
|
if (s->checkfn != 0)
|
|
z->adler = s->check = (*s->checkfn)(s->check, q, n);
|
|
|
|
/* copy */
|
|
memcpy(p, q, n);
|
|
p += n;
|
|
q += n;
|
|
}
|
|
|
|
/* update pointers */
|
|
z->next_out = p;
|
|
s->read = q;
|
|
|
|
/* done */
|
|
return r;
|
|
}
|
|
|
|
/* zutil.c -- target dependent utility functions for the compression library
|
|
* Copyright (C) 1995-2002 Jean-loup Gailly.
|
|
* For conditions of distribution and use, see copyright notice in zlib.h
|
|
*/
|
|
|
|
const char *z_errmsg[10] =
|
|
{
|
|
"need dictionary", /* Z_NEED_DICT 2 */
|
|
"stream end", /* Z_STREAM_END 1 */
|
|
"", /* Z_OK 0 */
|
|
"file error", /* Z_ERRNO (-1) */
|
|
"stream error", /* Z_STREAM_ERROR (-2) */
|
|
"data error", /* Z_DATA_ERROR (-3) */
|
|
"insufficient memory", /* Z_MEM_ERROR (-4) */
|
|
"buffer error", /* Z_BUF_ERROR (-5) */
|
|
"incompatible version",/* Z_VERSION_ERROR (-6) */
|
|
""
|
|
};
|
|
|
|
const char * zlibVersion (void)
|
|
{
|
|
return ZLIB_VERSION;
|
|
}
|
|
|
|
const char * zError(int err)
|
|
{
|
|
return z_errmsg[Z_NEED_DICT-(err)];
|
|
}
|
|
|
|
voidpf zcalloc (voidpf opaque, unsigned items, unsigned size)
|
|
{
|
|
if (opaque) items += size - size; /* make compiler happy */
|
|
return (voidpf)calloc(items, size);
|
|
}
|
|
|
|
void zcfree (voidpf opaque, voidpf ptr)
|
|
{
|
|
free(ptr);
|
|
if (opaque) return; /* make compiler happy */
|
|
}
|
|
|
|
|
|
/* crc32.c -- compute the CRC-32 of a data stream
|
|
* Copyright (C) 1995-2002 Mark Adler
|
|
* For conditions of distribution and use, see copyright notice in zlib.h
|
|
*/
|
|
|
|
const unsigned long crc_table[256] = {
|
|
0x00000000L, 0x77073096L, 0xee0e612cL, 0x990951baL, 0x076dc419L,
|
|
0x706af48fL, 0xe963a535L, 0x9e6495a3L, 0x0edb8832L, 0x79dcb8a4L,
|
|
0xe0d5e91eL, 0x97d2d988L, 0x09b64c2bL, 0x7eb17cbdL, 0xe7b82d07L,
|
|
0x90bf1d91L, 0x1db71064L, 0x6ab020f2L, 0xf3b97148L, 0x84be41deL,
|
|
0x1adad47dL, 0x6ddde4ebL, 0xf4d4b551L, 0x83d385c7L, 0x136c9856L,
|
|
0x646ba8c0L, 0xfd62f97aL, 0x8a65c9ecL, 0x14015c4fL, 0x63066cd9L,
|
|
0xfa0f3d63L, 0x8d080df5L, 0x3b6e20c8L, 0x4c69105eL, 0xd56041e4L,
|
|
0xa2677172L, 0x3c03e4d1L, 0x4b04d447L, 0xd20d85fdL, 0xa50ab56bL,
|
|
0x35b5a8faL, 0x42b2986cL, 0xdbbbc9d6L, 0xacbcf940L, 0x32d86ce3L,
|
|
0x45df5c75L, 0xdcd60dcfL, 0xabd13d59L, 0x26d930acL, 0x51de003aL,
|
|
0xc8d75180L, 0xbfd06116L, 0x21b4f4b5L, 0x56b3c423L, 0xcfba9599L,
|
|
0xb8bda50fL, 0x2802b89eL, 0x5f058808L, 0xc60cd9b2L, 0xb10be924L,
|
|
0x2f6f7c87L, 0x58684c11L, 0xc1611dabL, 0xb6662d3dL, 0x76dc4190L,
|
|
0x01db7106L, 0x98d220bcL, 0xefd5102aL, 0x71b18589L, 0x06b6b51fL,
|
|
0x9fbfe4a5L, 0xe8b8d433L, 0x7807c9a2L, 0x0f00f934L, 0x9609a88eL,
|
|
0xe10e9818L, 0x7f6a0dbbL, 0x086d3d2dL, 0x91646c97L, 0xe6635c01L,
|
|
0x6b6b51f4L, 0x1c6c6162L, 0x856530d8L, 0xf262004eL, 0x6c0695edL,
|
|
0x1b01a57bL, 0x8208f4c1L, 0xf50fc457L, 0x65b0d9c6L, 0x12b7e950L,
|
|
0x8bbeb8eaL, 0xfcb9887cL, 0x62dd1ddfL, 0x15da2d49L, 0x8cd37cf3L,
|
|
0xfbd44c65L, 0x4db26158L, 0x3ab551ceL, 0xa3bc0074L, 0xd4bb30e2L,
|
|
0x4adfa541L, 0x3dd895d7L, 0xa4d1c46dL, 0xd3d6f4fbL, 0x4369e96aL,
|
|
0x346ed9fcL, 0xad678846L, 0xda60b8d0L, 0x44042d73L, 0x33031de5L,
|
|
0xaa0a4c5fL, 0xdd0d7cc9L, 0x5005713cL, 0x270241aaL, 0xbe0b1010L,
|
|
0xc90c2086L, 0x5768b525L, 0x206f85b3L, 0xb966d409L, 0xce61e49fL,
|
|
0x5edef90eL, 0x29d9c998L, 0xb0d09822L, 0xc7d7a8b4L, 0x59b33d17L,
|
|
0x2eb40d81L, 0xb7bd5c3bL, 0xc0ba6cadL, 0xedb88320L, 0x9abfb3b6L,
|
|
0x03b6e20cL, 0x74b1d29aL, 0xead54739L, 0x9dd277afL, 0x04db2615L,
|
|
0x73dc1683L, 0xe3630b12L, 0x94643b84L, 0x0d6d6a3eL, 0x7a6a5aa8L,
|
|
0xe40ecf0bL, 0x9309ff9dL, 0x0a00ae27L, 0x7d079eb1L, 0xf00f9344L,
|
|
0x8708a3d2L, 0x1e01f268L, 0x6906c2feL, 0xf762575dL, 0x806567cbL,
|
|
0x196c3671L, 0x6e6b06e7L, 0xfed41b76L, 0x89d32be0L, 0x10da7a5aL,
|
|
0x67dd4accL, 0xf9b9df6fL, 0x8ebeeff9L, 0x17b7be43L, 0x60b08ed5L,
|
|
0xd6d6a3e8L, 0xa1d1937eL, 0x38d8c2c4L, 0x4fdff252L, 0xd1bb67f1L,
|
|
0xa6bc5767L, 0x3fb506ddL, 0x48b2364bL, 0xd80d2bdaL, 0xaf0a1b4cL,
|
|
0x36034af6L, 0x41047a60L, 0xdf60efc3L, 0xa867df55L, 0x316e8eefL,
|
|
0x4669be79L, 0xcb61b38cL, 0xbc66831aL, 0x256fd2a0L, 0x5268e236L,
|
|
0xcc0c7795L, 0xbb0b4703L, 0x220216b9L, 0x5505262fL, 0xc5ba3bbeL,
|
|
0xb2bd0b28L, 0x2bb45a92L, 0x5cb36a04L, 0xc2d7ffa7L, 0xb5d0cf31L,
|
|
0x2cd99e8bL, 0x5bdeae1dL, 0x9b64c2b0L, 0xec63f226L, 0x756aa39cL,
|
|
0x026d930aL, 0x9c0906a9L, 0xeb0e363fL, 0x72076785L, 0x05005713L,
|
|
0x95bf4a82L, 0xe2b87a14L, 0x7bb12baeL, 0x0cb61b38L, 0x92d28e9bL,
|
|
0xe5d5be0dL, 0x7cdcefb7L, 0x0bdbdf21L, 0x86d3d2d4L, 0xf1d4e242L,
|
|
0x68ddb3f8L, 0x1fda836eL, 0x81be16cdL, 0xf6b9265bL, 0x6fb077e1L,
|
|
0x18b74777L, 0x88085ae6L, 0xff0f6a70L, 0x66063bcaL, 0x11010b5cL,
|
|
0x8f659effL, 0xf862ae69L, 0x616bffd3L, 0x166ccf45L, 0xa00ae278L,
|
|
0xd70dd2eeL, 0x4e048354L, 0x3903b3c2L, 0xa7672661L, 0xd06016f7L,
|
|
0x4969474dL, 0x3e6e77dbL, 0xaed16a4aL, 0xd9d65adcL, 0x40df0b66L,
|
|
0x37d83bf0L, 0xa9bcae53L, 0xdebb9ec5L, 0x47b2cf7fL, 0x30b5ffe9L,
|
|
0xbdbdf21cL, 0xcabac28aL, 0x53b39330L, 0x24b4a3a6L, 0xbad03605L,
|
|
0xcdd70693L, 0x54de5729L, 0x23d967bfL, 0xb3667a2eL, 0xc4614ab8L,
|
|
0x5d681b02L, 0x2a6f2b94L, 0xb40bbe37L, 0xc30c8ea1L, 0x5a05df1bL,
|
|
0x2d02ef8dL
|
|
};
|
|
|
|
#define DO1_CRC32(buf) crc = crc_table[((int)crc ^ (*buf++)) & 0xff] ^ (crc >> 8);
|
|
#define DO2_CRC32(buf) DO1_CRC32(buf); DO1_CRC32(buf);
|
|
#define DO4_CRC32(buf) DO2_CRC32(buf); DO2_CRC32(buf);
|
|
#define DO8_CRC32(buf) DO4_CRC32(buf); DO4_CRC32(buf);
|
|
|
|
unsigned long crc32(unsigned long crc, const Bytef *buf, unsigned int len)
|
|
{
|
|
if (buf == 0) return 0L;
|
|
crc = crc ^ 0xffffffffL;
|
|
while (len >= 8)
|
|
{
|
|
DO8_CRC32(buf);
|
|
len -= 8;
|
|
}
|
|
if (len) do {
|
|
DO1_CRC32(buf);
|
|
} while (--len);
|
|
return crc ^ 0xffffffffL;
|
|
}
|
|
|
|
/* inflate.c -- zlib interface to inflate modules
|
|
* Copyright (C) 1995-2002 Mark Adler
|
|
* For conditions of distribution and use, see copyright notice in zlib.h
|
|
*/
|
|
|
|
|
|
int inflateReset(z_streamp z)
|
|
{
|
|
if (z == 0 || z->state == 0)
|
|
return Z_STREAM_ERROR;
|
|
z->total_in = z->total_out = 0;
|
|
z->msg = 0;
|
|
z->state->mode = z->state->nowrap ? BLOCKS_INFLATE : METHOD_INFLATE;
|
|
inflate_blocks_reset(z->state->blocks, z, 0);
|
|
return Z_OK;
|
|
}
|
|
|
|
int inflateEnd(z_streamp z)
|
|
{
|
|
if (z == 0 || z->state == 0 || z->zfree == 0)
|
|
return Z_STREAM_ERROR;
|
|
if (z->state->blocks != 0)
|
|
inflate_blocks_free(z->state->blocks, z);
|
|
ZFREE(z, z->state);
|
|
z->state = 0;
|
|
return Z_OK;
|
|
}
|
|
|
|
unsigned long adler32(unsigned long adler, const Bytef *buf, unsigned int len)
|
|
{
|
|
unsigned long s1 = adler & 0xffff;
|
|
unsigned long s2 = (adler >> 16) & 0xffff;
|
|
int k;
|
|
|
|
if (buf == 0) return 1L;
|
|
|
|
while (len > 0) {
|
|
k = len < NMAX ? len : NMAX;
|
|
len -= k;
|
|
while (k >= 16) {
|
|
DO16_ADLER(buf);
|
|
buf += 16;
|
|
k -= 16;
|
|
}
|
|
if (k != 0) do {
|
|
s1 += *buf++;
|
|
s2 += s1;
|
|
} while (--k);
|
|
s1 %= BASE;
|
|
s2 %= BASE;
|
|
}
|
|
return (s2 << 16) | s1;
|
|
}
|
|
|
|
|
|
int inflateInit2_(z_streamp z, int w, const char * version, int stream_size)
|
|
{
|
|
if (version == 0 || version[0] != ZLIB_VERSION[0] ||
|
|
stream_size != sizeof(z_stream))
|
|
return Z_VERSION_ERROR;
|
|
|
|
/* initialize state */
|
|
if (z == 0)
|
|
return Z_STREAM_ERROR;
|
|
z->msg = 0;
|
|
if (z->zalloc == 0)
|
|
{
|
|
z->zalloc = zcalloc;
|
|
z->opaque = (voidpf)0;
|
|
}
|
|
if (z->zfree == 0) z->zfree = zcfree;
|
|
if ((z->state = (struct internal_state *)
|
|
ZALLOC(z,1,sizeof(struct internal_state))) == 0)
|
|
return Z_MEM_ERROR;
|
|
z->state->blocks = 0;
|
|
|
|
/* handle undocumented nowrap option (no zlib header or check) */
|
|
z->state->nowrap = 0;
|
|
if (w < 0)
|
|
{
|
|
w = - w;
|
|
z->state->nowrap = 1;
|
|
}
|
|
|
|
/* set window size */
|
|
if (w < 8 || w > 15)
|
|
{
|
|
inflateEnd(z);
|
|
return Z_STREAM_ERROR;
|
|
}
|
|
z->state->wbits = (unsigned int)w;
|
|
|
|
/* create inflate_blocks state */
|
|
if ((z->state->blocks =
|
|
inflate_blocks_new(z, z->state->nowrap ? 0 : adler32, (unsigned int)1 << w))
|
|
== 0)
|
|
{
|
|
inflateEnd(z);
|
|
return Z_MEM_ERROR;
|
|
}
|
|
|
|
/* reset state */
|
|
inflateReset(z);
|
|
return Z_OK;
|
|
}
|
|
|
|
|
|
int inflateInit_(z_streamp z, const char * version, int stream_size)
|
|
{
|
|
return inflateInit2_(z, DEF_WBITS, version, stream_size);
|
|
}
|
|
|
|
#define NEEDBYTE_INFLATE {if(z->avail_in==0)return r;r=f;}
|
|
#define NEXTBYTE_INFLATE (z->avail_in--,z->total_in++,*z->next_in++)
|
|
|
|
int inflate(z_streamp z, int f)
|
|
{
|
|
int r;
|
|
unsigned int b;
|
|
|
|
if (z == 0 || z->state == 0 || z->next_in == 0)
|
|
return Z_STREAM_ERROR;
|
|
f = f == Z_FINISH ? Z_BUF_ERROR : Z_OK;
|
|
r = Z_BUF_ERROR;
|
|
while (1) switch (z->state->mode)
|
|
{
|
|
case METHOD_INFLATE:
|
|
NEEDBYTE_INFLATE
|
|
if (((z->state->sub.method = NEXTBYTE_INFLATE) & 0xf) != Z_DEFLATED)
|
|
{
|
|
z->state->mode = BAD_INFLATE;
|
|
z->msg = (char*)"unknown compression method";
|
|
z->state->sub.marker = 5; /* can't try inflateSync */
|
|
break;
|
|
}
|
|
if ((z->state->sub.method >> 4) + 8 > z->state->wbits)
|
|
{
|
|
z->state->mode = BAD_INFLATE;
|
|
z->msg = (char*)"invalid window size";
|
|
z->state->sub.marker = 5; /* can't try inflateSync */
|
|
break;
|
|
}
|
|
z->state->mode = FLAG_INFLATE;
|
|
case FLAG_INFLATE:
|
|
NEEDBYTE_INFLATE
|
|
b = NEXTBYTE_INFLATE;
|
|
if (((z->state->sub.method << 8) + b) % 31)
|
|
{
|
|
z->state->mode = BAD_INFLATE;
|
|
z->msg = (char*)"incorrect header check";
|
|
z->state->sub.marker = 5; /* can't try inflateSync */
|
|
break;
|
|
}
|
|
if (!(b & PRESET_DICT))
|
|
{
|
|
z->state->mode = BLOCKS_INFLATE;
|
|
break;
|
|
}
|
|
z->state->mode = DICT4_INFLATE;
|
|
case DICT4_INFLATE:
|
|
NEEDBYTE_INFLATE
|
|
z->state->sub.check.need = (unsigned long)NEXTBYTE_INFLATE << 24;
|
|
z->state->mode = DICT3_INFLATE;
|
|
case DICT3_INFLATE:
|
|
NEEDBYTE_INFLATE
|
|
z->state->sub.check.need += (unsigned long)NEXTBYTE_INFLATE << 16;
|
|
z->state->mode = DICT2_INFLATE;
|
|
case DICT2_INFLATE:
|
|
NEEDBYTE_INFLATE
|
|
z->state->sub.check.need += (unsigned long)NEXTBYTE_INFLATE << 8;
|
|
z->state->mode = DICT1_INFLATE;
|
|
case DICT1_INFLATE:
|
|
NEEDBYTE_INFLATE
|
|
z->state->sub.check.need += (unsigned long)NEXTBYTE_INFLATE;
|
|
z->adler = z->state->sub.check.need;
|
|
z->state->mode = DICT0_INFLATE;
|
|
return Z_NEED_DICT;
|
|
case DICT0_INFLATE:
|
|
z->state->mode = BAD_INFLATE;
|
|
z->msg = (char*)"need dictionary";
|
|
z->state->sub.marker = 0; /* can try inflateSync */
|
|
return Z_STREAM_ERROR;
|
|
case BLOCKS_INFLATE:
|
|
r = inflate_blocks(z->state->blocks, z, r);
|
|
if (r == Z_DATA_ERROR)
|
|
{
|
|
z->state->mode = BAD_INFLATE;
|
|
z->state->sub.marker = 0; /* can try inflateSync */
|
|
break;
|
|
}
|
|
if (r == Z_OK)
|
|
r = f;
|
|
if (r != Z_STREAM_END)
|
|
return r;
|
|
r = f;
|
|
inflate_blocks_reset(z->state->blocks, z, &z->state->sub.check.was);
|
|
if (z->state->nowrap)
|
|
{
|
|
z->state->mode = DONE_INFLATE;
|
|
break;
|
|
}
|
|
z->state->mode = CHECK4_INFLATE;
|
|
case CHECK4_INFLATE:
|
|
NEEDBYTE_INFLATE
|
|
z->state->sub.check.need = (unsigned long)NEXTBYTE_INFLATE << 24;
|
|
z->state->mode = CHECK3_INFLATE;
|
|
case CHECK3_INFLATE:
|
|
NEEDBYTE_INFLATE
|
|
z->state->sub.check.need += (unsigned long)NEXTBYTE_INFLATE << 16;
|
|
z->state->mode = CHECK2_INFLATE;
|
|
case CHECK2_INFLATE:
|
|
NEEDBYTE_INFLATE
|
|
z->state->sub.check.need += (unsigned long)NEXTBYTE_INFLATE << 8;
|
|
z->state->mode = CHECK1_INFLATE;
|
|
case CHECK1_INFLATE:
|
|
NEEDBYTE_INFLATE
|
|
z->state->sub.check.need += (unsigned long)NEXTBYTE_INFLATE;
|
|
|
|
if (z->state->sub.check.was != z->state->sub.check.need)
|
|
{
|
|
z->state->mode = BAD_INFLATE;
|
|
z->msg = (char*)"incorrect data check";
|
|
z->state->sub.marker = 5; /* can't try inflateSync */
|
|
break;
|
|
}
|
|
z->state->mode = DONE_INFLATE;
|
|
case DONE_INFLATE:
|
|
return Z_STREAM_END;
|
|
case BAD_INFLATE:
|
|
return Z_DATA_ERROR;
|
|
default:
|
|
return Z_STREAM_ERROR;
|
|
}
|
|
}
|
|
|
|
/* gzio.c -- IO on .gz files
|
|
* Copyright (C) 1995-2002 Jean-loup Gailly.
|
|
* For conditions of distribution and use, see copyright notice in zlib.h
|
|
*
|
|
*/
|
|
|
|
|
|
#ifdef _MSC_VER
|
|
#pragma warning (disable:4996)
|
|
#endif
|
|
|
|
#ifndef Z_BUFSIZE
|
|
# ifdef MAXSEG_64K
|
|
# define Z_BUFSIZE 4096 /* minimize memory usage for 16-bit DOS */
|
|
# else
|
|
# define Z_BUFSIZE 16384
|
|
# endif
|
|
#endif
|
|
#ifndef Z_PRINTF_BUFSIZE
|
|
# define Z_PRINTF_BUFSIZE 4096
|
|
#endif
|
|
|
|
int gz_magic[2] = {0x1f, 0x8b}; /* gzip magic header */
|
|
|
|
/* gzip flag byte */
|
|
#define ASCII_FLAG 0x01 /* bit 0 set: file probably ascii text */
|
|
#define HEAD_CRC 0x02 /* bit 1 set: header CRC present */
|
|
#define EXTRA_FIELD 0x04 /* bit 2 set: extra field present */
|
|
#define ORIG_NAME 0x08 /* bit 3 set: original file name present */
|
|
#define COMMENT 0x10 /* bit 4 set: file comment present */
|
|
#define RESERVED 0xE0 /* bits 5..7: reserved */
|
|
|
|
typedef struct gz_stream {
|
|
z_stream stream;
|
|
int z_err; /* error code for last stream operation */
|
|
int z_eof; /* set if end of input file */
|
|
FILE *file; /* .gz file */
|
|
Byte *inbuf; /* input buffer */
|
|
Byte *outbuf; /* output buffer */
|
|
unsigned long crc; /* crc32 of uncompressed data */
|
|
char *msg; /* error message */
|
|
char *path; /* path name for debugging only */
|
|
int transparent; /* 1 if input file is not a .gz file */
|
|
char mode; /* 'w' or 'r' */
|
|
long startpos; /* start of compressed data in file (header skipped) */
|
|
} gz_stream;
|
|
|
|
static int get_byte(gz_stream *s)
|
|
{
|
|
if (s->z_eof) return EOF;
|
|
if (s->stream.avail_in == 0) {
|
|
errno = 0;
|
|
s->stream.avail_in = fread(s->inbuf, 1, Z_BUFSIZE, s->file);
|
|
if (s->stream.avail_in == 0) {
|
|
s->z_eof = 1;
|
|
if (ferror(s->file)) s->z_err = Z_ERRNO;
|
|
return EOF;
|
|
}
|
|
s->stream.next_in = s->inbuf;
|
|
}
|
|
s->stream.avail_in--;
|
|
return *(s->stream.next_in)++;
|
|
}
|
|
|
|
static unsigned long getLong (gz_stream *s)
|
|
{
|
|
unsigned long x = (unsigned long)get_byte(s);
|
|
int c;
|
|
|
|
x += ((unsigned long)get_byte(s))<<8;
|
|
x += ((unsigned long)get_byte(s))<<16;
|
|
c = get_byte(s);
|
|
if (c == EOF) s->z_err = Z_DATA_ERROR;
|
|
x += ((unsigned long)c)<<24;
|
|
return x;
|
|
}
|
|
|
|
static int destroy (gz_stream *s)
|
|
{
|
|
int err = Z_OK;
|
|
|
|
if (!s) return Z_STREAM_ERROR;
|
|
|
|
if(s->msg)
|
|
free(s->msg);
|
|
|
|
if (s->stream.state != NULL) {
|
|
if (s->mode == 'w') {
|
|
err = Z_STREAM_ERROR;
|
|
} else if (s->mode == 'r') {
|
|
err = inflateEnd(&(s->stream));
|
|
}
|
|
}
|
|
if (s->file != NULL && fclose(s->file)) {
|
|
err = Z_ERRNO;
|
|
}
|
|
if (s->z_err < 0) err = s->z_err;
|
|
|
|
if(s->inbuf)
|
|
free(s->inbuf);
|
|
if(s->outbuf)
|
|
free(s->outbuf);
|
|
if(s->path)
|
|
free(s->path);
|
|
if(s)
|
|
free(s);
|
|
return err;
|
|
}
|
|
|
|
static void check_header(gz_stream *s)
|
|
{
|
|
int method; /* method byte */
|
|
int flags; /* flags byte */
|
|
unsigned int len;
|
|
int c;
|
|
|
|
/* Check the gzip magic header */
|
|
for (len = 0; len < 2; len++) {
|
|
c = get_byte(s);
|
|
if (c != gz_magic[len]) {
|
|
if (len != 0) s->stream.avail_in++, s->stream.next_in--;
|
|
if (c != EOF) {
|
|
s->stream.avail_in++, s->stream.next_in--;
|
|
s->transparent = 1;
|
|
}
|
|
s->z_err = s->stream.avail_in != 0 ? Z_OK : Z_STREAM_END;
|
|
return;
|
|
}
|
|
}
|
|
method = get_byte(s);
|
|
flags = get_byte(s);
|
|
if (method != Z_DEFLATED || (flags & RESERVED) != 0) {
|
|
s->z_err = Z_DATA_ERROR;
|
|
return;
|
|
}
|
|
|
|
/* Discard time, xflags and OS code: */
|
|
for (len = 0; len < 6; len++) (void)get_byte(s);
|
|
|
|
if ((flags & EXTRA_FIELD) != 0) { /* skip the extra field */
|
|
len = (unsigned int)get_byte(s);
|
|
len += ((unsigned int)get_byte(s))<<8;
|
|
/* len is garbage if EOF but the loop below will quit anyway */
|
|
while (len-- != 0 && get_byte(s) != EOF) ;
|
|
}
|
|
if ((flags & ORIG_NAME) != 0) { /* skip the original file name */
|
|
while ((c = get_byte(s)) != 0 && c != EOF) ;
|
|
}
|
|
if ((flags & COMMENT) != 0) { /* skip the .gz file comment */
|
|
while ((c = get_byte(s)) != 0 && c != EOF) ;
|
|
}
|
|
if ((flags & HEAD_CRC) != 0) { /* skip the header crc */
|
|
for (len = 0; len < 2; len++) (void)get_byte(s);
|
|
}
|
|
s->z_err = s->z_eof ? Z_DATA_ERROR : Z_OK;
|
|
}
|
|
|
|
static voidp gz_open (const char * path, const char *mode, int fd)
|
|
{
|
|
int err;
|
|
char *p = (char*)mode;
|
|
gz_stream *s;
|
|
char fmode[80]; /* copy of mode, without the compression level */
|
|
char *m = fmode;
|
|
|
|
if (!path || !mode) return 0;
|
|
|
|
s = (gz_stream *)malloc(sizeof(gz_stream));
|
|
if (!s) return 0;
|
|
|
|
s->stream.zalloc = (alloc_func)0;
|
|
s->stream.zfree = (free_func)0;
|
|
s->stream.opaque = (voidpf)0;
|
|
s->stream.next_in = s->inbuf = 0;
|
|
s->stream.next_out = s->outbuf = 0;
|
|
s->stream.avail_in = s->stream.avail_out = 0;
|
|
s->file = NULL;
|
|
s->z_err = Z_OK;
|
|
s->z_eof = 0;
|
|
s->crc = crc32(0L, 0, 0);
|
|
s->msg = NULL;
|
|
s->transparent = 0;
|
|
|
|
s->path = (char*)malloc(strlen(path)+1);
|
|
if (s->path == NULL) {
|
|
return destroy(s), (voidp)0;
|
|
}
|
|
strlcpy(s->path, path, sizeof(s->path)); /* do this early for debugging */
|
|
|
|
s->mode = '\0';
|
|
do {
|
|
if (*p == 'r') s->mode = 'r';
|
|
if (*p == 'w' || *p == 'a') s->mode = 'w';
|
|
if (*p >= '0' && *p <= '9') {
|
|
} else if (*p == 'f') {
|
|
} else if (*p == 'h') {
|
|
} else {
|
|
*m++ = *p; /* copy the mode */
|
|
}
|
|
} while (*p++ && m != fmode + sizeof(fmode));
|
|
if (s->mode == '\0') return destroy(s), (voidp)0;
|
|
|
|
if (s->mode == 'w') {
|
|
err = Z_STREAM_ERROR;
|
|
if (err != Z_OK || s->outbuf == 0) {
|
|
return destroy(s), (voidp)0;
|
|
}
|
|
} else {
|
|
s->stream.next_in = s->inbuf = (Byte*)malloc(Z_BUFSIZE);
|
|
|
|
err = inflateInit2(&(s->stream), -MAX_WBITS);
|
|
/* windowBits is passed < 0 to tell that there is no zlib header.
|
|
* Note that in this case inflate *requires* an extra "dummy" byte
|
|
* after the compressed stream in order to complete decompression and
|
|
* return Z_STREAM_END. Here the gzip CRC32 ensures that 4 bytes are
|
|
* present after the compressed stream.
|
|
*/
|
|
if (err != Z_OK || s->inbuf == 0) {
|
|
return destroy(s), (voidp)0;
|
|
}
|
|
}
|
|
s->stream.avail_out = Z_BUFSIZE;
|
|
|
|
errno = 0;
|
|
s->file = fopen((path), (fmode));
|
|
if (s->file == NULL) {
|
|
return destroy(s), (voidp)0;
|
|
}
|
|
if (s->mode == 'w') {
|
|
/* Write a very simple .gz header:
|
|
*/
|
|
fprintf(s->file, "%c%c%c%c%c%c%c%c%c%c", gz_magic[0], gz_magic[1],
|
|
Z_DEFLATED, 0 /*flags*/, 0,0,0,0 /*time*/, 0 /*xflags*/, OS_CODE);
|
|
s->startpos = 10L;
|
|
/* We use 10L instead of ftell(s->file) to because ftell causes an
|
|
* fflush on some systems. This version of the library doesn't use
|
|
* startpos anyway in write mode, so this initialization is not
|
|
* necessary.
|
|
*/
|
|
} else {
|
|
check_header(s); /* skip the .gz header */
|
|
s->startpos = (ftell(s->file) - s->stream.avail_in);
|
|
}
|
|
|
|
return (voidp)s;
|
|
}
|
|
|
|
voidp gzopen (const char * path, const char * mode)
|
|
{
|
|
return gz_open (path, mode, -1);
|
|
}
|
|
|
|
voidp gzdopen (int fd, const char * mode)
|
|
{
|
|
char name[20];
|
|
|
|
if (fd < 0) return (voidp)0;
|
|
snprintf(name, sizeof(name), "<fd:%d>", fd); /* for debugging */
|
|
|
|
return gz_open (name, mode, fd);
|
|
}
|
|
|
|
int gzread (voidp file, voidp buf, unsigned len)
|
|
{
|
|
gz_stream *s = (gz_stream*)file;
|
|
Bytef *start = (Bytef*)buf; /* starting point for crc computation */
|
|
Byte *next_out; /* == stream.next_out but not forced far (for MSDOS) */
|
|
|
|
if (s == NULL || s->mode != 'r') return Z_STREAM_ERROR;
|
|
|
|
if (s->z_err == Z_DATA_ERROR || s->z_err == Z_ERRNO) return -1;
|
|
if (s->z_err == Z_STREAM_END) return 0; /* EOF */
|
|
|
|
next_out = (Byte*)buf;
|
|
s->stream.next_out = (Bytef*)buf;
|
|
s->stream.avail_out = len;
|
|
|
|
while (s->stream.avail_out != 0) {
|
|
|
|
if (s->transparent) {
|
|
/* Copy first the lookahead bytes: */
|
|
unsigned int n = s->stream.avail_in;
|
|
if (n > s->stream.avail_out) n = s->stream.avail_out;
|
|
if (n > 0) {
|
|
memcpy(s->stream.next_out, s->stream.next_in, n);
|
|
next_out += n;
|
|
s->stream.next_out = next_out;
|
|
s->stream.next_in += n;
|
|
s->stream.avail_out -= n;
|
|
s->stream.avail_in -= n;
|
|
}
|
|
if (s->stream.avail_out > 0) {
|
|
s->stream.avail_out -= fread(next_out, 1, s->stream.avail_out,
|
|
s->file);
|
|
}
|
|
len -= s->stream.avail_out;
|
|
s->stream.total_in += (unsigned long)len;
|
|
s->stream.total_out += (unsigned long)len;
|
|
if (len == 0) s->z_eof = 1;
|
|
return (int)len;
|
|
}
|
|
if (s->stream.avail_in == 0 && !s->z_eof) {
|
|
|
|
errno = 0;
|
|
s->stream.avail_in = fread(s->inbuf, 1, Z_BUFSIZE, s->file);
|
|
if (s->stream.avail_in == 0) {
|
|
s->z_eof = 1;
|
|
if (ferror(s->file)) {
|
|
s->z_err = Z_ERRNO;
|
|
break;
|
|
}
|
|
}
|
|
s->stream.next_in = s->inbuf;
|
|
}
|
|
s->z_err = inflate(&(s->stream), Z_NO_FLUSH);
|
|
|
|
if (s->z_err == Z_STREAM_END) {
|
|
/* Check CRC and original size */
|
|
s->crc = crc32(s->crc, start, (unsigned int)(s->stream.next_out - start));
|
|
start = s->stream.next_out;
|
|
|
|
if (getLong(s) != s->crc) {
|
|
s->z_err = Z_DATA_ERROR;
|
|
} else {
|
|
(void)getLong(s);
|
|
/* The uncompressed length returned by above getlong() may
|
|
* be different from s->stream.total_out) in case of
|
|
* concatenated .gz files. Check for such files:
|
|
*/
|
|
check_header(s);
|
|
if (s->z_err == Z_OK) {
|
|
unsigned long total_in = s->stream.total_in;
|
|
unsigned long total_out = s->stream.total_out;
|
|
|
|
inflateReset(&(s->stream));
|
|
s->stream.total_in = total_in;
|
|
s->stream.total_out = total_out;
|
|
s->crc = crc32(0L, 0, 0);
|
|
}
|
|
}
|
|
}
|
|
if (s->z_err != Z_OK || s->z_eof) break;
|
|
}
|
|
s->crc = crc32(s->crc, start, (unsigned int)(s->stream.next_out - start));
|
|
|
|
return (int)(len - s->stream.avail_out);
|
|
}
|
|
|
|
int gzgetc(voidp file)
|
|
{
|
|
unsigned char c;
|
|
|
|
return gzread(file, &c, 1) == 1 ? c : -1;
|
|
}
|
|
|
|
char * gzgets(voidp file, char *buf, int len)
|
|
{
|
|
char *b = buf;
|
|
if (buf == 0 || len <= 0) return 0;
|
|
|
|
while (--len > 0 && gzread(file, buf, 1) == 1 && *buf++ != '\n') ;
|
|
*buf = '\0';
|
|
return b == buf && len > 0 ? 0 : b;
|
|
}
|
|
|
|
z_off_t gzseek (voidp file, z_off_t offset, int whence)
|
|
{
|
|
gz_stream *s = (gz_stream*)file;
|
|
|
|
if (s == NULL || whence == SEEK_END ||
|
|
s->z_err == Z_ERRNO || s->z_err == Z_DATA_ERROR) {
|
|
return -1L;
|
|
}
|
|
|
|
if (s->mode == 'w')
|
|
return -1L;
|
|
/* Rest of function is for reading only */
|
|
|
|
/* compute absolute position */
|
|
if (whence == SEEK_CUR) {
|
|
offset += s->stream.total_out;
|
|
}
|
|
if (offset < 0) return -1L;
|
|
|
|
if (s->transparent) {
|
|
/* map to fseek */
|
|
s->stream.avail_in = 0;
|
|
s->stream.next_in = s->inbuf;
|
|
if (fseek(s->file, offset, SEEK_SET) < 0) return -1L;
|
|
|
|
s->stream.total_in = s->stream.total_out = (unsigned long)offset;
|
|
return offset;
|
|
}
|
|
|
|
/* For a negative seek, rewind and use positive seek */
|
|
if ((unsigned long)offset >= s->stream.total_out) {
|
|
offset -= s->stream.total_out;
|
|
} else if (gzrewind(file) < 0) {
|
|
return -1L;
|
|
}
|
|
/* offset is now the number of bytes to skip. */
|
|
|
|
if (offset != 0 && s->outbuf == 0) {
|
|
s->outbuf = (Byte*)malloc(Z_BUFSIZE);
|
|
}
|
|
while (offset > 0) {
|
|
int size = Z_BUFSIZE;
|
|
if (offset < Z_BUFSIZE) size = (int)offset;
|
|
|
|
size = gzread(file, s->outbuf, (unsigned int)size);
|
|
if (size <= 0) return -1L;
|
|
offset -= size;
|
|
}
|
|
return (z_off_t)s->stream.total_out;
|
|
}
|
|
|
|
int gzrewind (voidp file)
|
|
{
|
|
gz_stream *s = (gz_stream*)file;
|
|
|
|
if (s == NULL || s->mode != 'r') return -1;
|
|
|
|
s->z_err = Z_OK;
|
|
s->z_eof = 0;
|
|
s->stream.avail_in = 0;
|
|
s->stream.next_in = s->inbuf;
|
|
s->crc = crc32(0L, 0, 0);
|
|
|
|
if (s->startpos == 0) { /* not a compressed file */
|
|
rewind(s->file);
|
|
return 0;
|
|
}
|
|
|
|
(void) inflateReset(&s->stream);
|
|
return fseek(s->file, s->startpos, SEEK_SET);
|
|
}
|
|
|
|
z_off_t gztell (voidp file)
|
|
{
|
|
return gzseek(file, 0L, SEEK_CUR);
|
|
}
|
|
|
|
int gzeof (voidp file)
|
|
{
|
|
gz_stream *s = (gz_stream*)file;
|
|
|
|
return (s == NULL || s->mode != 'r') ? 0 : s->z_eof;
|
|
}
|
|
|
|
|
|
int gzclose (voidp file)
|
|
{
|
|
gz_stream *s = (gz_stream*)file;
|
|
|
|
if (s == NULL) return Z_STREAM_ERROR;
|
|
|
|
if (s->mode == 'w')
|
|
return Z_STREAM_ERROR;
|
|
|
|
return destroy((gz_stream*)file);
|
|
}
|
|
|
|
const char* gzerror (voidp file, int *errnum)
|
|
{
|
|
char *m;
|
|
gz_stream *s = (gz_stream*)file;
|
|
|
|
if (s == NULL) {
|
|
*errnum = Z_STREAM_ERROR;
|
|
return (const char*)ERR_MSG(Z_STREAM_ERROR);
|
|
}
|
|
*errnum = s->z_err;
|
|
if (*errnum == Z_OK) return (const char*)"";
|
|
|
|
m = (char*)(*errnum == Z_ERRNO ? zstrerror(errno) : s->stream.msg);
|
|
|
|
if (m == NULL || *m == '\0') m = (char*)ERR_MSG(s->z_err);
|
|
|
|
if(s->msg)
|
|
free(s->msg);
|
|
s->msg = (char*)malloc(strlen(s->path) + strlen(m) + 3);
|
|
strlcpy(s->msg, s->path, sizeof(s->msg));
|
|
strlcat(s->msg, ": ", sizeof(s->msg));
|
|
strlcat(s->msg, m, sizeof(s->msg));
|
|
return (const char*)s->msg;
|
|
}
|
|
|
|
/* ioapi.c -- IO base function header for compress/uncompress .zip
|
|
files using zlib + zip or unzip API
|
|
|
|
Version 1.01e, February 12th, 2005
|
|
|
|
Copyright (C) 1998-2005 Gilles Vollant
|
|
*/
|
|
|
|
voidpf fopen_file_func (voidpf opaque, const char * filename, int mode)
|
|
{
|
|
FILE* file = NULL;
|
|
const char* mode_fopen = NULL;
|
|
if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ)
|
|
mode_fopen = "rb";
|
|
else
|
|
if (mode & ZLIB_FILEFUNC_MODE_EXISTING)
|
|
mode_fopen = "r+b";
|
|
else
|
|
if (mode & ZLIB_FILEFUNC_MODE_CREATE)
|
|
mode_fopen = "wb";
|
|
|
|
if ((filename!=NULL) && (mode_fopen != NULL))
|
|
file = fopen(filename, mode_fopen);
|
|
return file;
|
|
}
|
|
|
|
unsigned long fread_file_func (voidpf opaque, voidpf stream, void *buf, unsigned long size)
|
|
{
|
|
unsigned long ret;
|
|
ret = (unsigned long)fread(buf, 1, (size_t)size, (FILE *)stream);
|
|
return ret;
|
|
}
|
|
|
|
|
|
unsigned long fwrite_file_func (voidpf opaque, voidpf stream, const void *buf, unsigned long size)
|
|
{
|
|
unsigned long ret;
|
|
ret = (unsigned long)fwrite(buf, 1, (size_t)size, (FILE *)stream);
|
|
return ret;
|
|
}
|
|
|
|
long ftell_file_func (voidpf opaque, voidpf stream)
|
|
{
|
|
long ret;
|
|
ret = ftell((FILE *)stream);
|
|
return ret;
|
|
}
|
|
|
|
long fseek_file_func (voidpf opaque, voidpf stream, unsigned long offset, int origin)
|
|
{
|
|
int fseek_origin=0;
|
|
long ret;
|
|
switch (origin)
|
|
{
|
|
case ZLIB_FILEFUNC_SEEK_CUR :
|
|
fseek_origin = SEEK_CUR;
|
|
break;
|
|
case ZLIB_FILEFUNC_SEEK_END :
|
|
fseek_origin = SEEK_END;
|
|
break;
|
|
case ZLIB_FILEFUNC_SEEK_SET :
|
|
fseek_origin = SEEK_SET;
|
|
break;
|
|
default: return -1;
|
|
}
|
|
ret = 0;
|
|
fseek((FILE *)stream, offset, fseek_origin);
|
|
return ret;
|
|
}
|
|
|
|
int fclose_file_func (voidpf opaque, voidpf stream)
|
|
{
|
|
int ret;
|
|
ret = fclose((FILE *)stream);
|
|
return ret;
|
|
}
|
|
|
|
int ferror_file_func (voidpf opaque, voidpf stream)
|
|
{
|
|
int ret;
|
|
ret = ferror((FILE *)stream);
|
|
return ret;
|
|
}
|
|
|
|
void fill_fopen_filefunc (zlib_filefunc_def *pzlib_filefunc_def)
|
|
{
|
|
pzlib_filefunc_def->zopen_file = fopen_file_func;
|
|
pzlib_filefunc_def->zread_file = fread_file_func;
|
|
pzlib_filefunc_def->zwrite_file = fwrite_file_func;
|
|
pzlib_filefunc_def->ztell_file = ftell_file_func;
|
|
pzlib_filefunc_def->zseek_file = fseek_file_func;
|
|
pzlib_filefunc_def->zclose_file = fclose_file_func;
|
|
pzlib_filefunc_def->zerror_file = ferror_file_func;
|
|
pzlib_filefunc_def->opaque = NULL;
|
|
}
|
|
|
|
/* unzip.c -- IO for uncompress .zip files using zlib
|
|
Version 1.1, February 14h, 2010
|
|
part of the MiniZip project - ( http://www.winimage.com/zLibDll/minizip.html )
|
|
|
|
Copyright (C) 1998-2010 Gilles Vollant (minizip) ( http://www.winimage.com/zLibDll/minizip.html )
|
|
*/
|
|
|
|
#ifndef CASESENSITIVITYDEFAULT_NO
|
|
# if !defined(unix) && !defined(CASESENSITIVITYDEFAULT_YES)
|
|
# define CASESENSITIVITYDEFAULT_NO
|
|
# endif
|
|
#endif
|
|
|
|
|
|
#ifndef UNZ_BUFSIZE
|
|
#define UNZ_BUFSIZE (16384)
|
|
#endif
|
|
|
|
#ifndef UNZ_MAXFILENAMEINZIP
|
|
#define UNZ_MAXFILENAMEINZIP (256)
|
|
#endif
|
|
|
|
#define SIZECENTRALDIRITEM (0x2e)
|
|
#define SIZEZIPLOCALHEADER (0x1e)
|
|
|
|
/* unz_file_info_interntal contain internal info about a file in zipfile*/
|
|
typedef struct unz_file_info_internal_s
|
|
{
|
|
unsigned long offset_curfile;/* relative offset of local header 4 bytes */
|
|
} unz_file_info_internal;
|
|
|
|
|
|
/* file_in_zip_read_info_s contain internal information about a file in zipfile,
|
|
when reading and decompress it */
|
|
typedef struct
|
|
{
|
|
char *read_buffer; /* internal buffer for compressed data */
|
|
z_stream stream; /* zLib stream structure for inflate */
|
|
|
|
unsigned long pos_in_zipfile; /* position in byte on the zipfile, for fseek*/
|
|
unsigned long stream_initialised; /* flag set if stream structure is initialised*/
|
|
|
|
unsigned long offset_local_extrafield;/* offset of the local extra field */
|
|
unsigned int size_local_extrafield;/* size of the local extra field */
|
|
unsigned long pos_local_extrafield; /* position in the local extra field in read*/
|
|
|
|
unsigned long crc32; /* crc32 of all data uncompressed */
|
|
unsigned long crc32_wait; /* crc32 we must obtain after decompress all */
|
|
unsigned long rest_read_compressed; /* number of byte to be decompressed */
|
|
unsigned long rest_read_uncompressed;/*number of byte to be obtained after decomp*/
|
|
zlib_filefunc_def z_filefunc;
|
|
voidpf filestream; /* io structore of the zipfile */
|
|
unsigned long compression_method; /* compression method (0==store) */
|
|
unsigned long byte_before_the_zipfile;/* byte before the zipfile, (>0 for sfx)*/
|
|
int raw;
|
|
} file_in_zip_read_info_s;
|
|
|
|
|
|
/* unz_s contain internal information about the zipfile
|
|
*/
|
|
typedef struct
|
|
{
|
|
zlib_filefunc_def z_filefunc;
|
|
voidpf filestream; /* io structore of the zipfile */
|
|
unz_global_info gi; /* public global information */
|
|
unsigned long byte_before_the_zipfile;/* byte before the zipfile, (>0 for sfx)*/
|
|
unsigned long num_file; /* number of the current file in the zipfile*/
|
|
unsigned long pos_in_central_dir; /* pos of the current file in the central dir*/
|
|
unsigned long current_file_ok; /* flag about the usability of the current file*/
|
|
unsigned long central_pos; /* position of the beginning of the central dir*/
|
|
|
|
unsigned long size_central_dir; /* size of the central directory */
|
|
unsigned long offset_central_dir; /* offset of start of central directory with
|
|
respect to the starting disk number */
|
|
|
|
unz_file_info cur_file_info; /* public info about the current file in zip*/
|
|
unz_file_info_internal cur_file_info_internal; /* private info about it*/
|
|
file_in_zip_read_info_s* pfile_in_zip_read; /* structure about the current
|
|
file if we are decompressing it */
|
|
int encrypted;
|
|
} unz_s;
|
|
|
|
|
|
static int unzlocal_getByte(const zlib_filefunc_def *pzlib_filefunc_def, voidpf filestream, int *pi)
|
|
{
|
|
unsigned char c;
|
|
int err = (int)ZREAD(*pzlib_filefunc_def,filestream,&c,1);
|
|
if (err==1)
|
|
{
|
|
*pi = (int)c;
|
|
return UNZ_OK;
|
|
}
|
|
else
|
|
{
|
|
if (ZERROR(*pzlib_filefunc_def,filestream))
|
|
return UNZ_ERRNO;
|
|
else
|
|
return UNZ_EOF;
|
|
}
|
|
}
|
|
|
|
static int unzlocal_getShort (zlib_filefunc_def *pzlib_filefunc_def, voidpf filestream, unsigned long *pX)
|
|
{
|
|
unsigned long x ;
|
|
int i = 0;
|
|
int err;
|
|
|
|
err = unzlocal_getByte(pzlib_filefunc_def,filestream,&i);
|
|
x = (unsigned long)i;
|
|
|
|
if (err==UNZ_OK)
|
|
err = unzlocal_getByte(pzlib_filefunc_def,filestream,&i);
|
|
x += ((unsigned long)i)<<8;
|
|
|
|
if (err==UNZ_OK)
|
|
*pX = x;
|
|
else
|
|
*pX = 0;
|
|
return err;
|
|
}
|
|
|
|
static int unzlocal_getLong (const zlib_filefunc_def *pzlib_filefunc_def, voidpf filestream, unsigned long *pX)
|
|
{
|
|
unsigned long x ;
|
|
int i = 0;
|
|
int err;
|
|
|
|
err = unzlocal_getByte(pzlib_filefunc_def,filestream,&i);
|
|
x = (unsigned long)i;
|
|
|
|
if (err==UNZ_OK)
|
|
err = unzlocal_getByte(pzlib_filefunc_def,filestream,&i);
|
|
x += ((unsigned long)i)<<8;
|
|
|
|
if (err==UNZ_OK)
|
|
err = unzlocal_getByte(pzlib_filefunc_def,filestream,&i);
|
|
x += ((unsigned long)i)<<16;
|
|
|
|
if (err==UNZ_OK)
|
|
err = unzlocal_getByte(pzlib_filefunc_def,filestream,&i);
|
|
x += ((unsigned long)i)<<24;
|
|
|
|
if (err==UNZ_OK)
|
|
*pX = x;
|
|
else
|
|
*pX = 0;
|
|
return err;
|
|
}
|
|
|
|
|
|
/* My own strcmpi / strcasecmp */
|
|
static int strcmpcasenosensitive_internal (const char * fileName1, const char * fileName2)
|
|
{
|
|
for (;;)
|
|
{
|
|
char c1=*(fileName1++);
|
|
char c2=*(fileName2++);
|
|
if ((c1>='a') && (c1<='z'))
|
|
c1 -= 0x20;
|
|
if ((c2>='a') && (c2<='z'))
|
|
c2 -= 0x20;
|
|
if (c1=='\0')
|
|
return ((c2=='\0') ? 0 : -1);
|
|
if (c2=='\0')
|
|
return 1;
|
|
if (c1<c2)
|
|
return -1;
|
|
if (c1>c2)
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
|
|
#ifdef CASESENSITIVITYDEFAULT_NO
|
|
#define CASESENSITIVITYDEFAULTVALUE 2
|
|
#else
|
|
#define CASESENSITIVITYDEFAULTVALUE 1
|
|
#endif
|
|
|
|
#ifndef STRCMPCASENOSENTIVEFUNCTION
|
|
#define STRCMPCASENOSENTIVEFUNCTION strcmpcasenosensitive_internal
|
|
#endif
|
|
|
|
extern int unzStringFileNameCompare (const char * fileName1, const char * fileName2, int iCaseSensitivity)
|
|
{
|
|
if (iCaseSensitivity==0)
|
|
iCaseSensitivity=CASESENSITIVITYDEFAULTVALUE;
|
|
|
|
if (iCaseSensitivity==1)
|
|
return strcmp(fileName1,fileName2);
|
|
|
|
return STRCMPCASENOSENTIVEFUNCTION(fileName1,fileName2);
|
|
}
|
|
|
|
#ifndef BUFREADCOMMENT
|
|
#define BUFREADCOMMENT (0x400)
|
|
#endif
|
|
|
|
static unsigned long unzlocal_SearchCentralDir(const zlib_filefunc_def *pzlib_filefunc_def, voidpf filestream)
|
|
{
|
|
unsigned char* buf;
|
|
unsigned long uSizeFile;
|
|
unsigned long uBackRead;
|
|
unsigned long uMaxBack=0xffff; /* maximum size of global comment */
|
|
unsigned long uPosFound=0;
|
|
|
|
if (ZSEEK(*pzlib_filefunc_def,filestream,0,ZLIB_FILEFUNC_SEEK_END) != 0)
|
|
return 0;
|
|
|
|
|
|
uSizeFile = ZTELL(*pzlib_filefunc_def,filestream);
|
|
|
|
if (uMaxBack>uSizeFile)
|
|
uMaxBack = uSizeFile;
|
|
|
|
buf = (unsigned char*)malloc(BUFREADCOMMENT+4);
|
|
if (buf==NULL)
|
|
return 0;
|
|
|
|
uBackRead = 4;
|
|
while (uBackRead<uMaxBack)
|
|
{
|
|
unsigned long uReadSize,uReadPos ;
|
|
int i;
|
|
if (uBackRead+BUFREADCOMMENT>uMaxBack)
|
|
uBackRead = uMaxBack;
|
|
else
|
|
uBackRead+=BUFREADCOMMENT;
|
|
uReadPos = uSizeFile-uBackRead ;
|
|
|
|
uReadSize = ((BUFREADCOMMENT+4) < (uSizeFile-uReadPos)) ?
|
|
(BUFREADCOMMENT+4) : (uSizeFile-uReadPos);
|
|
if (ZSEEK(*pzlib_filefunc_def,filestream,uReadPos,ZLIB_FILEFUNC_SEEK_SET)!=0)
|
|
break;
|
|
|
|
if (ZREAD(*pzlib_filefunc_def,filestream,buf,uReadSize)!=uReadSize)
|
|
break;
|
|
|
|
for (i=(int)uReadSize-3; (i--)>0;)
|
|
if (((*(buf+i))==0x50) && ((*(buf+i+1))==0x4b) &&
|
|
((*(buf+i+2))==0x05) && ((*(buf+i+3))==0x06))
|
|
{
|
|
uPosFound = uReadPos+i;
|
|
break;
|
|
}
|
|
|
|
if (uPosFound!=0)
|
|
break;
|
|
}
|
|
if(buf)
|
|
free(buf);
|
|
return uPosFound;
|
|
}
|
|
|
|
extern unzFile unzOpen2 (const char * path, zlib_filefunc_def *pzlib_filefunc_def)
|
|
{
|
|
unz_s us;
|
|
unz_s *s;
|
|
unsigned long central_pos,uL;
|
|
|
|
unsigned long number_disk; /* number of the current dist, used for
|
|
spaning ZIP, unsupported, always 0*/
|
|
unsigned long number_disk_with_CD; /* number the the disk with central dir, used
|
|
for spaning ZIP, unsupported, always 0*/
|
|
unsigned long number_entry_CD; /* total number of entries in
|
|
the central dir
|
|
(same than number_entry on nospan) */
|
|
|
|
int err=UNZ_OK;
|
|
|
|
if (pzlib_filefunc_def==NULL)
|
|
fill_fopen_filefunc(&us.z_filefunc);
|
|
else
|
|
us.z_filefunc = *pzlib_filefunc_def;
|
|
|
|
us.filestream= (*(us.z_filefunc.zopen_file))(us.z_filefunc.opaque,
|
|
path,
|
|
ZLIB_FILEFUNC_MODE_READ |
|
|
ZLIB_FILEFUNC_MODE_EXISTING);
|
|
if (us.filestream==NULL)
|
|
return NULL;
|
|
|
|
central_pos = unzlocal_SearchCentralDir(&us.z_filefunc,us.filestream);
|
|
if (central_pos==0)
|
|
err=UNZ_ERRNO;
|
|
|
|
if (ZSEEK(us.z_filefunc, us.filestream,
|
|
central_pos,ZLIB_FILEFUNC_SEEK_SET)!=0)
|
|
err=UNZ_ERRNO;
|
|
|
|
/* the signature, already checked */
|
|
if (unzlocal_getLong(&us.z_filefunc, us.filestream,&uL)!=UNZ_OK)
|
|
err=UNZ_ERRNO;
|
|
|
|
/* number of this disk */
|
|
if (unzlocal_getShort(&us.z_filefunc, us.filestream,&number_disk)!=UNZ_OK)
|
|
err=UNZ_ERRNO;
|
|
|
|
/* number of the disk with the start of the central directory */
|
|
if (unzlocal_getShort(&us.z_filefunc, us.filestream,&number_disk_with_CD)!=UNZ_OK)
|
|
err=UNZ_ERRNO;
|
|
|
|
/* total number of entries in the central dir on this disk */
|
|
if (unzlocal_getShort(&us.z_filefunc, us.filestream,&us.gi.number_entry)!=UNZ_OK)
|
|
err=UNZ_ERRNO;
|
|
|
|
/* total number of entries in the central dir */
|
|
if (unzlocal_getShort(&us.z_filefunc, us.filestream,&number_entry_CD)!=UNZ_OK)
|
|
err=UNZ_ERRNO;
|
|
|
|
if ((number_entry_CD!=us.gi.number_entry) ||
|
|
(number_disk_with_CD!=0) ||
|
|
(number_disk!=0))
|
|
err=UNZ_BADZIPFILE;
|
|
|
|
/* size of the central directory */
|
|
if (unzlocal_getLong(&us.z_filefunc, us.filestream,&us.size_central_dir)!=UNZ_OK)
|
|
err=UNZ_ERRNO;
|
|
|
|
/* offset of start of central directory with respect to the
|
|
starting disk number */
|
|
if (unzlocal_getLong(&us.z_filefunc, us.filestream,&us.offset_central_dir)!=UNZ_OK)
|
|
err=UNZ_ERRNO;
|
|
|
|
/* zipfile comment length */
|
|
if (unzlocal_getShort(&us.z_filefunc, us.filestream,&us.gi.size_comment)!=UNZ_OK)
|
|
err=UNZ_ERRNO;
|
|
|
|
if ((central_pos<us.offset_central_dir+us.size_central_dir) &&
|
|
(err==UNZ_OK))
|
|
err=UNZ_BADZIPFILE;
|
|
|
|
if (err!=UNZ_OK)
|
|
{
|
|
ZCLOSE(us.z_filefunc, us.filestream);
|
|
return NULL;
|
|
}
|
|
|
|
us.byte_before_the_zipfile = central_pos -
|
|
(us.offset_central_dir+us.size_central_dir);
|
|
us.central_pos = central_pos;
|
|
us.pfile_in_zip_read = NULL;
|
|
us.encrypted = 0;
|
|
|
|
|
|
s=(unz_s*)malloc(sizeof(unz_s));
|
|
*s=us;
|
|
unzGoToFirstFile((unzFile)s);
|
|
return (unzFile)s;
|
|
}
|
|
|
|
|
|
extern unzFile unzOpen (const char * path)
|
|
{
|
|
return unzOpen2(path, NULL);
|
|
}
|
|
|
|
extern int unzClose (unzFile file)
|
|
{
|
|
unz_s* s;
|
|
if (file==NULL)
|
|
return UNZ_PARAMERROR;
|
|
s=(unz_s*)file;
|
|
|
|
if (s->pfile_in_zip_read!=NULL)
|
|
unzCloseCurrentFile(file);
|
|
|
|
ZCLOSE(s->z_filefunc, s->filestream);
|
|
if(s)
|
|
free(s);
|
|
return UNZ_OK;
|
|
}
|
|
|
|
extern int unzGetGlobalInfo (unzFile file, unz_global_info *pglobal_info)
|
|
{
|
|
unz_s* s;
|
|
if (file==NULL)
|
|
return UNZ_PARAMERROR;
|
|
s=(unz_s*)file;
|
|
*pglobal_info=s->gi;
|
|
return UNZ_OK;
|
|
}
|
|
|
|
static void unzlocal_DosDateToTmuDate (unsigned long ulDosDate, tm_unz *ptm)
|
|
{
|
|
unsigned long uDate;
|
|
uDate = (unsigned long)(ulDosDate>>16);
|
|
ptm->tm_mday = (unsigned int)(uDate&0x1f) ;
|
|
ptm->tm_mon = (unsigned int)((((uDate)&0x1E0)/0x20)-1) ;
|
|
ptm->tm_year = (unsigned int)(((uDate&0x0FE00)/0x0200)+1980) ;
|
|
|
|
ptm->tm_hour = (unsigned int) ((ulDosDate &0xF800)/0x800);
|
|
ptm->tm_min = (unsigned int) ((ulDosDate&0x7E0)/0x20) ;
|
|
ptm->tm_sec = (unsigned int) (2*(ulDosDate&0x1f)) ;
|
|
}
|
|
|
|
static int unzlocal_GetCurrentFileInfoInternal (unzFile file,
|
|
unz_file_info *pfile_info,
|
|
unz_file_info_internal *pfile_info_internal,
|
|
char *szFileName,
|
|
unsigned long fileNameBufferSize,
|
|
void *extraField,
|
|
unsigned long extraFieldBufferSize,
|
|
char *szComment,
|
|
unsigned long commentBufferSize)
|
|
{
|
|
unz_s* s;
|
|
unz_file_info file_info;
|
|
unz_file_info_internal file_info_internal;
|
|
int err=UNZ_OK;
|
|
unsigned long uMagic;
|
|
long lSeek=0;
|
|
|
|
if (file==NULL)
|
|
return UNZ_PARAMERROR;
|
|
s=(unz_s*)file;
|
|
if (ZSEEK(s->z_filefunc, s->filestream,
|
|
s->pos_in_central_dir+s->byte_before_the_zipfile,
|
|
ZLIB_FILEFUNC_SEEK_SET)!=0)
|
|
err=UNZ_ERRNO;
|
|
|
|
|
|
/* we check the magic */
|
|
if (err==UNZ_OK)
|
|
{
|
|
if (unzlocal_getLong(&s->z_filefunc, s->filestream,&uMagic) != UNZ_OK)
|
|
err=UNZ_ERRNO;
|
|
else if (uMagic!=0x02014b50)
|
|
err=UNZ_BADZIPFILE;
|
|
}
|
|
|
|
if (unzlocal_getShort(&s->z_filefunc, s->filestream,&file_info.version) != UNZ_OK)
|
|
err=UNZ_ERRNO;
|
|
|
|
if (unzlocal_getShort(&s->z_filefunc, s->filestream,&file_info.version_needed) != UNZ_OK)
|
|
err=UNZ_ERRNO;
|
|
|
|
if (unzlocal_getShort(&s->z_filefunc, s->filestream,&file_info.flag) != UNZ_OK)
|
|
err=UNZ_ERRNO;
|
|
|
|
if (unzlocal_getShort(&s->z_filefunc, s->filestream,&file_info.compression_method) != UNZ_OK)
|
|
err=UNZ_ERRNO;
|
|
|
|
if (unzlocal_getLong(&s->z_filefunc, s->filestream,&file_info.dosDate) != UNZ_OK)
|
|
err=UNZ_ERRNO;
|
|
|
|
unzlocal_DosDateToTmuDate(file_info.dosDate,&file_info.tmu_date);
|
|
|
|
if (unzlocal_getLong(&s->z_filefunc, s->filestream,&file_info.crc) != UNZ_OK)
|
|
err=UNZ_ERRNO;
|
|
|
|
if (unzlocal_getLong(&s->z_filefunc, s->filestream,&file_info.compressed_size) != UNZ_OK)
|
|
err=UNZ_ERRNO;
|
|
|
|
if (unzlocal_getLong(&s->z_filefunc, s->filestream,&file_info.uncompressed_size) != UNZ_OK)
|
|
err=UNZ_ERRNO;
|
|
|
|
if (unzlocal_getShort(&s->z_filefunc, s->filestream,&file_info.size_filename) != UNZ_OK)
|
|
err=UNZ_ERRNO;
|
|
|
|
if (unzlocal_getShort(&s->z_filefunc, s->filestream,&file_info.size_file_extra) != UNZ_OK)
|
|
err=UNZ_ERRNO;
|
|
|
|
if (unzlocal_getShort(&s->z_filefunc, s->filestream,&file_info.size_file_comment) != UNZ_OK)
|
|
err=UNZ_ERRNO;
|
|
|
|
if (unzlocal_getShort(&s->z_filefunc, s->filestream,&file_info.disk_num_start) != UNZ_OK)
|
|
err=UNZ_ERRNO;
|
|
|
|
if (unzlocal_getShort(&s->z_filefunc, s->filestream,&file_info.internal_fa) != UNZ_OK)
|
|
err=UNZ_ERRNO;
|
|
|
|
if (unzlocal_getLong(&s->z_filefunc, s->filestream,&file_info.external_fa) != UNZ_OK)
|
|
err=UNZ_ERRNO;
|
|
|
|
if (unzlocal_getLong(&s->z_filefunc, s->filestream,&file_info_internal.offset_curfile) != UNZ_OK)
|
|
err=UNZ_ERRNO;
|
|
|
|
lSeek+=file_info.size_filename;
|
|
if ((err==UNZ_OK) && (szFileName!=NULL))
|
|
{
|
|
unsigned long uSizeRead ;
|
|
if (file_info.size_filename<fileNameBufferSize)
|
|
{
|
|
*(szFileName+file_info.size_filename)='\0';
|
|
uSizeRead = file_info.size_filename;
|
|
}
|
|
else
|
|
uSizeRead = fileNameBufferSize;
|
|
|
|
if ((file_info.size_filename>0) && (fileNameBufferSize>0))
|
|
if (ZREAD(s->z_filefunc, s->filestream,szFileName,uSizeRead)!=uSizeRead)
|
|
err=UNZ_ERRNO;
|
|
lSeek -= uSizeRead;
|
|
}
|
|
|
|
|
|
if ((err==UNZ_OK) && (extraField!=NULL))
|
|
{
|
|
unsigned long uSizeRead ;
|
|
if (file_info.size_file_extra<extraFieldBufferSize)
|
|
uSizeRead = file_info.size_file_extra;
|
|
else
|
|
uSizeRead = extraFieldBufferSize;
|
|
|
|
if (lSeek!=0)
|
|
{
|
|
if (ZSEEK(s->z_filefunc, s->filestream,lSeek,ZLIB_FILEFUNC_SEEK_CUR)==0)
|
|
lSeek=0;
|
|
else
|
|
err=UNZ_ERRNO;
|
|
}
|
|
|
|
if ((file_info.size_file_extra>0) && (extraFieldBufferSize>0))
|
|
if (ZREAD(s->z_filefunc, s->filestream,extraField,uSizeRead)!=uSizeRead)
|
|
err=UNZ_ERRNO;
|
|
lSeek += file_info.size_file_extra - uSizeRead;
|
|
}
|
|
else
|
|
lSeek+=file_info.size_file_extra;
|
|
|
|
|
|
if ((err==UNZ_OK) && (szComment!=NULL))
|
|
{
|
|
unsigned long uSizeRead ;
|
|
if (file_info.size_file_comment<commentBufferSize)
|
|
{
|
|
*(szComment+file_info.size_file_comment)='\0';
|
|
uSizeRead = file_info.size_file_comment;
|
|
}
|
|
else
|
|
uSizeRead = commentBufferSize;
|
|
|
|
if (lSeek!=0)
|
|
{
|
|
if (ZSEEK(s->z_filefunc, s->filestream,lSeek,ZLIB_FILEFUNC_SEEK_CUR)==0)
|
|
lSeek=0;
|
|
else
|
|
err=UNZ_ERRNO;
|
|
}
|
|
|
|
if ((file_info.size_file_comment>0) && (commentBufferSize>0))
|
|
if (ZREAD(s->z_filefunc, s->filestream,szComment,uSizeRead)!=uSizeRead)
|
|
err=UNZ_ERRNO;
|
|
lSeek+=file_info.size_file_comment - uSizeRead;
|
|
}
|
|
else
|
|
lSeek+=file_info.size_file_comment;
|
|
|
|
if ((err==UNZ_OK) && (pfile_info!=NULL))
|
|
*pfile_info=file_info;
|
|
|
|
if ((err==UNZ_OK) && (pfile_info_internal!=NULL))
|
|
*pfile_info_internal=file_info_internal;
|
|
|
|
return err;
|
|
}
|
|
|
|
extern int unzGetCurrentFileInfo (unzFile file,
|
|
unz_file_info *pfile_info,
|
|
char *szFileName,
|
|
unsigned long fileNameBufferSize,
|
|
void *extraField,
|
|
unsigned long extraFieldBufferSize,
|
|
char *szComment,
|
|
unsigned long commentBufferSize)
|
|
{
|
|
return unzlocal_GetCurrentFileInfoInternal(file,pfile_info,NULL,
|
|
szFileName,fileNameBufferSize,
|
|
extraField,extraFieldBufferSize,
|
|
szComment,commentBufferSize);
|
|
}
|
|
|
|
extern int unzGoToFirstFile (unzFile file)
|
|
{
|
|
int err=UNZ_OK;
|
|
unz_s* s;
|
|
if (file==NULL)
|
|
return UNZ_PARAMERROR;
|
|
s=(unz_s*)file;
|
|
s->pos_in_central_dir=s->offset_central_dir;
|
|
s->num_file=0;
|
|
err=unzlocal_GetCurrentFileInfoInternal(file,&s->cur_file_info,
|
|
&s->cur_file_info_internal,
|
|
NULL,0,NULL,0,NULL,0);
|
|
s->current_file_ok = (err == UNZ_OK);
|
|
return err;
|
|
}
|
|
|
|
extern int unzGoToNextFile (unzFile file)
|
|
{
|
|
unz_s* s;
|
|
int err;
|
|
|
|
if (file==NULL)
|
|
return UNZ_PARAMERROR;
|
|
s=(unz_s*)file;
|
|
if (!s->current_file_ok)
|
|
return UNZ_END_OF_LIST_OF_FILE;
|
|
if (s->gi.number_entry != 0xffff) /* 2^16 files overflow hack */
|
|
if (s->num_file+1==s->gi.number_entry)
|
|
return UNZ_END_OF_LIST_OF_FILE;
|
|
|
|
s->pos_in_central_dir += SIZECENTRALDIRITEM + s->cur_file_info.size_filename +
|
|
s->cur_file_info.size_file_extra + s->cur_file_info.size_file_comment ;
|
|
s->num_file++;
|
|
err = unzlocal_GetCurrentFileInfoInternal(file,&s->cur_file_info,
|
|
&s->cur_file_info_internal,
|
|
NULL,0,NULL,0,NULL,0);
|
|
s->current_file_ok = (err == UNZ_OK);
|
|
return err;
|
|
}
|
|
|
|
extern int unzLocateFile (unzFile file, const char * szFileName, int iCaseSensitivity)
|
|
{
|
|
unz_s* s;
|
|
int err;
|
|
|
|
/* We remember the 'current' position in the file so that we can jump
|
|
* back there if we fail.
|
|
*/
|
|
unz_file_info cur_file_infoSaved;
|
|
unz_file_info_internal cur_file_info_internalSaved;
|
|
unsigned long num_fileSaved;
|
|
unsigned long pos_in_central_dirSaved;
|
|
|
|
|
|
if (file==NULL)
|
|
return UNZ_PARAMERROR;
|
|
|
|
if (strlen(szFileName)>=UNZ_MAXFILENAMEINZIP)
|
|
return UNZ_PARAMERROR;
|
|
|
|
s=(unz_s*)file;
|
|
if (!s->current_file_ok)
|
|
return UNZ_END_OF_LIST_OF_FILE;
|
|
|
|
/* Save the current state */
|
|
num_fileSaved = s->num_file;
|
|
pos_in_central_dirSaved = s->pos_in_central_dir;
|
|
cur_file_infoSaved = s->cur_file_info;
|
|
cur_file_info_internalSaved = s->cur_file_info_internal;
|
|
|
|
err = unzGoToFirstFile(file);
|
|
|
|
while (err == UNZ_OK)
|
|
{
|
|
char szCurrentFileName[UNZ_MAXFILENAMEINZIP+1];
|
|
err = unzGetCurrentFileInfo(file,NULL,
|
|
szCurrentFileName,sizeof(szCurrentFileName)-1,
|
|
NULL,0,NULL,0);
|
|
if (err == UNZ_OK)
|
|
{
|
|
if (unzStringFileNameCompare(szCurrentFileName,
|
|
szFileName,iCaseSensitivity)==0)
|
|
return UNZ_OK;
|
|
err = unzGoToNextFile(file);
|
|
}
|
|
}
|
|
|
|
/* We failed, so restore the state of the 'current file' to where we
|
|
* were.
|
|
*/
|
|
s->num_file = num_fileSaved ;
|
|
s->pos_in_central_dir = pos_in_central_dirSaved ;
|
|
s->cur_file_info = cur_file_infoSaved;
|
|
s->cur_file_info_internal = cur_file_info_internalSaved;
|
|
return err;
|
|
}
|
|
|
|
extern int unzGetFilePos(unzFile file, unz_file_pos *file_pos)
|
|
{
|
|
unz_s* s;
|
|
|
|
if (file==NULL || file_pos==NULL)
|
|
return UNZ_PARAMERROR;
|
|
s=(unz_s*)file;
|
|
if (!s->current_file_ok)
|
|
return UNZ_END_OF_LIST_OF_FILE;
|
|
|
|
file_pos->pos_in_zip_directory = s->pos_in_central_dir;
|
|
file_pos->num_of_file = s->num_file;
|
|
|
|
return UNZ_OK;
|
|
}
|
|
|
|
extern int unzGoToFilePos(unzFile file, unz_file_pos *file_pos)
|
|
{
|
|
unz_s* s;
|
|
int err;
|
|
|
|
if (file==NULL || file_pos==NULL)
|
|
return UNZ_PARAMERROR;
|
|
s=(unz_s*)file;
|
|
|
|
/* jump to the right spot */
|
|
s->pos_in_central_dir = file_pos->pos_in_zip_directory;
|
|
s->num_file = file_pos->num_of_file;
|
|
|
|
/* set the current file */
|
|
err = unzlocal_GetCurrentFileInfoInternal(file,&s->cur_file_info,
|
|
&s->cur_file_info_internal,
|
|
NULL,0,NULL,0,NULL,0);
|
|
/* return results */
|
|
s->current_file_ok = (err == UNZ_OK);
|
|
return err;
|
|
}
|
|
|
|
static int unzlocal_CheckCurrentFileCoherencyHeader (unz_s * s, unsigned int *piSizeVar,
|
|
unsigned long *poffset_local_extrafield,
|
|
unsigned int *psize_local_extrafield)
|
|
{
|
|
unsigned long uMagic,uData,uFlags;
|
|
unsigned long size_filename;
|
|
unsigned long size_extra_field;
|
|
int err=UNZ_OK;
|
|
|
|
*piSizeVar = 0;
|
|
*poffset_local_extrafield = 0;
|
|
*psize_local_extrafield = 0;
|
|
|
|
if (ZSEEK(s->z_filefunc, s->filestream,s->cur_file_info_internal.offset_curfile +
|
|
s->byte_before_the_zipfile,ZLIB_FILEFUNC_SEEK_SET)!=0)
|
|
return UNZ_ERRNO;
|
|
|
|
|
|
if (err==UNZ_OK)
|
|
{
|
|
if (unzlocal_getLong(&s->z_filefunc, s->filestream,&uMagic) != UNZ_OK)
|
|
err=UNZ_ERRNO;
|
|
else if (uMagic!=0x04034b50)
|
|
err=UNZ_BADZIPFILE;
|
|
}
|
|
|
|
if (unzlocal_getShort(&s->z_filefunc, s->filestream,&uData) != UNZ_OK)
|
|
err=UNZ_ERRNO;
|
|
if (unzlocal_getShort(&s->z_filefunc, s->filestream,&uFlags) != UNZ_OK)
|
|
err=UNZ_ERRNO;
|
|
|
|
if (unzlocal_getShort(&s->z_filefunc, s->filestream,&uData) != UNZ_OK)
|
|
err=UNZ_ERRNO;
|
|
else if ((err==UNZ_OK) && (uData!=s->cur_file_info.compression_method))
|
|
err=UNZ_BADZIPFILE;
|
|
|
|
if ((err==UNZ_OK) && (s->cur_file_info.compression_method!=0) &&
|
|
(s->cur_file_info.compression_method!=Z_DEFLATED))
|
|
err=UNZ_BADZIPFILE;
|
|
|
|
if (unzlocal_getLong(&s->z_filefunc, s->filestream,&uData) != UNZ_OK) /* date/time */
|
|
err=UNZ_ERRNO;
|
|
|
|
if (unzlocal_getLong(&s->z_filefunc, s->filestream,&uData) != UNZ_OK) /* crc */
|
|
err=UNZ_ERRNO;
|
|
else if ((err==UNZ_OK) && (uData!=s->cur_file_info.crc) &&
|
|
((uFlags & 8)==0))
|
|
err=UNZ_BADZIPFILE;
|
|
|
|
if (unzlocal_getLong(&s->z_filefunc, s->filestream,&uData) != UNZ_OK) /* size compr */
|
|
err=UNZ_ERRNO;
|
|
else if ((err==UNZ_OK) && (uData!=s->cur_file_info.compressed_size) &&
|
|
((uFlags & 8)==0))
|
|
err=UNZ_BADZIPFILE;
|
|
|
|
if (unzlocal_getLong(&s->z_filefunc, s->filestream,&uData) != UNZ_OK) /* size uncompr */
|
|
err=UNZ_ERRNO;
|
|
else if ((err==UNZ_OK) && (uData!=s->cur_file_info.uncompressed_size) &&
|
|
((uFlags & 8)==0))
|
|
err=UNZ_BADZIPFILE;
|
|
|
|
|
|
if (unzlocal_getShort(&s->z_filefunc, s->filestream,&size_filename) != UNZ_OK)
|
|
err=UNZ_ERRNO;
|
|
else if ((err==UNZ_OK) && (size_filename!=s->cur_file_info.size_filename))
|
|
err=UNZ_BADZIPFILE;
|
|
|
|
*piSizeVar += (unsigned int)size_filename;
|
|
|
|
if (unzlocal_getShort(&s->z_filefunc, s->filestream,&size_extra_field) != UNZ_OK)
|
|
err=UNZ_ERRNO;
|
|
*poffset_local_extrafield= s->cur_file_info_internal.offset_curfile +
|
|
SIZEZIPLOCALHEADER + size_filename;
|
|
*psize_local_extrafield = (unsigned int)size_extra_field;
|
|
|
|
*piSizeVar += (unsigned int)size_extra_field;
|
|
|
|
return err;
|
|
}
|
|
|
|
extern int unzOpenCurrentFile3 (unzFile file, int *method, int *level, int raw, const char * password)
|
|
{
|
|
int err=UNZ_OK;
|
|
unsigned int iSizeVar;
|
|
unz_s* s;
|
|
file_in_zip_read_info_s* pfile_in_zip_read_info;
|
|
unsigned long offset_local_extrafield; /* offset of the local extra field */
|
|
unsigned int size_local_extrafield; /* size of the local extra field */
|
|
if (password != NULL)
|
|
return UNZ_PARAMERROR;
|
|
|
|
if (file==NULL)
|
|
return UNZ_PARAMERROR;
|
|
s=(unz_s*)file;
|
|
if (!s->current_file_ok)
|
|
return UNZ_PARAMERROR;
|
|
|
|
if (s->pfile_in_zip_read != NULL)
|
|
unzCloseCurrentFile(file);
|
|
|
|
if (unzlocal_CheckCurrentFileCoherencyHeader(s,&iSizeVar,
|
|
&offset_local_extrafield,&size_local_extrafield)!=UNZ_OK)
|
|
return UNZ_BADZIPFILE;
|
|
|
|
pfile_in_zip_read_info = (file_in_zip_read_info_s*)malloc(sizeof(file_in_zip_read_info_s));
|
|
if (pfile_in_zip_read_info==NULL)
|
|
return UNZ_INTERNALERROR;
|
|
|
|
pfile_in_zip_read_info->read_buffer=(char*)malloc(UNZ_BUFSIZE);
|
|
pfile_in_zip_read_info->offset_local_extrafield = offset_local_extrafield;
|
|
pfile_in_zip_read_info->size_local_extrafield = size_local_extrafield;
|
|
pfile_in_zip_read_info->pos_local_extrafield=0;
|
|
pfile_in_zip_read_info->raw=raw;
|
|
|
|
if (pfile_in_zip_read_info->read_buffer==NULL)
|
|
{
|
|
if(pfile_in_zip_read_info)
|
|
free(pfile_in_zip_read_info);
|
|
return UNZ_INTERNALERROR;
|
|
}
|
|
|
|
pfile_in_zip_read_info->stream_initialised=0;
|
|
|
|
if (method!=NULL)
|
|
*method = (int)s->cur_file_info.compression_method;
|
|
|
|
if (level!=NULL)
|
|
{
|
|
*level = 6;
|
|
switch (s->cur_file_info.flag & 0x06)
|
|
{
|
|
case 6 : *level = 1; break;
|
|
case 4 : *level = 2; break;
|
|
case 2 : *level = 9; break;
|
|
}
|
|
}
|
|
|
|
if ((s->cur_file_info.compression_method!=0) &&
|
|
(s->cur_file_info.compression_method!=Z_DEFLATED))
|
|
err=UNZ_BADZIPFILE;
|
|
|
|
pfile_in_zip_read_info->crc32_wait=s->cur_file_info.crc;
|
|
pfile_in_zip_read_info->crc32=0;
|
|
pfile_in_zip_read_info->compression_method =
|
|
s->cur_file_info.compression_method;
|
|
pfile_in_zip_read_info->filestream=s->filestream;
|
|
pfile_in_zip_read_info->z_filefunc=s->z_filefunc;
|
|
pfile_in_zip_read_info->byte_before_the_zipfile=s->byte_before_the_zipfile;
|
|
|
|
pfile_in_zip_read_info->stream.total_out = 0;
|
|
|
|
if ((s->cur_file_info.compression_method==Z_DEFLATED) &&
|
|
(!raw))
|
|
{
|
|
pfile_in_zip_read_info->stream.zalloc = (alloc_func)0;
|
|
pfile_in_zip_read_info->stream.zfree = (free_func)0;
|
|
pfile_in_zip_read_info->stream.opaque = 0;
|
|
pfile_in_zip_read_info->stream.next_in = 0;
|
|
pfile_in_zip_read_info->stream.avail_in = 0;
|
|
|
|
err=inflateInit2(&pfile_in_zip_read_info->stream, -MAX_WBITS);
|
|
if (err == Z_OK)
|
|
pfile_in_zip_read_info->stream_initialised=1;
|
|
else
|
|
{
|
|
if(pfile_in_zip_read_info)
|
|
free(pfile_in_zip_read_info);
|
|
return err;
|
|
}
|
|
}
|
|
pfile_in_zip_read_info->rest_read_compressed =
|
|
s->cur_file_info.compressed_size ;
|
|
pfile_in_zip_read_info->rest_read_uncompressed =
|
|
s->cur_file_info.uncompressed_size ;
|
|
|
|
|
|
pfile_in_zip_read_info->pos_in_zipfile =
|
|
s->cur_file_info_internal.offset_curfile + SIZEZIPLOCALHEADER +
|
|
iSizeVar;
|
|
|
|
pfile_in_zip_read_info->stream.avail_in = (unsigned int)0;
|
|
|
|
s->pfile_in_zip_read = pfile_in_zip_read_info;
|
|
|
|
return UNZ_OK;
|
|
}
|
|
|
|
extern int unzOpenCurrentFile (unzFile file)
|
|
{
|
|
return unzOpenCurrentFile3(file, NULL, NULL, 0, NULL);
|
|
}
|
|
|
|
extern int unzOpenCurrentFilePassword (unzFile file, const char * password)
|
|
{
|
|
return unzOpenCurrentFile3(file, NULL, NULL, 0, password);
|
|
}
|
|
|
|
extern int unzOpenCurrentFile2 (unzFile file, int *method, int *level, int raw)
|
|
{
|
|
return unzOpenCurrentFile3(file, method, level, raw, NULL);
|
|
}
|
|
|
|
extern int unzReadCurrentFile (unzFile file, voidp buf, unsigned len)
|
|
{
|
|
int err=UNZ_OK;
|
|
unsigned int iRead = 0;
|
|
unz_s* s;
|
|
file_in_zip_read_info_s* pfile_in_zip_read_info;
|
|
if (file==NULL)
|
|
return UNZ_PARAMERROR;
|
|
s=(unz_s*)file;
|
|
pfile_in_zip_read_info=s->pfile_in_zip_read;
|
|
|
|
if (pfile_in_zip_read_info==NULL)
|
|
return UNZ_PARAMERROR;
|
|
|
|
|
|
if ((pfile_in_zip_read_info->read_buffer == NULL))
|
|
return UNZ_END_OF_LIST_OF_FILE;
|
|
if (len==0)
|
|
return 0;
|
|
|
|
pfile_in_zip_read_info->stream.next_out = (Bytef*)buf;
|
|
|
|
pfile_in_zip_read_info->stream.avail_out = (unsigned int)len;
|
|
|
|
if ((len>pfile_in_zip_read_info->rest_read_uncompressed) &&
|
|
(!(pfile_in_zip_read_info->raw)))
|
|
pfile_in_zip_read_info->stream.avail_out =
|
|
(unsigned int)pfile_in_zip_read_info->rest_read_uncompressed;
|
|
|
|
if ((len>pfile_in_zip_read_info->rest_read_compressed+
|
|
pfile_in_zip_read_info->stream.avail_in) &&
|
|
(pfile_in_zip_read_info->raw))
|
|
pfile_in_zip_read_info->stream.avail_out =
|
|
(unsigned int)pfile_in_zip_read_info->rest_read_compressed+
|
|
pfile_in_zip_read_info->stream.avail_in;
|
|
|
|
while (pfile_in_zip_read_info->stream.avail_out>0)
|
|
{
|
|
if ((pfile_in_zip_read_info->stream.avail_in==0) &&
|
|
(pfile_in_zip_read_info->rest_read_compressed>0))
|
|
{
|
|
unsigned int uReadThis = UNZ_BUFSIZE;
|
|
if (pfile_in_zip_read_info->rest_read_compressed<uReadThis)
|
|
uReadThis = (unsigned int)pfile_in_zip_read_info->rest_read_compressed;
|
|
if (uReadThis == 0)
|
|
return UNZ_EOF;
|
|
if (ZSEEK(pfile_in_zip_read_info->z_filefunc,
|
|
pfile_in_zip_read_info->filestream,
|
|
pfile_in_zip_read_info->pos_in_zipfile +
|
|
pfile_in_zip_read_info->byte_before_the_zipfile,
|
|
ZLIB_FILEFUNC_SEEK_SET)!=0)
|
|
return UNZ_ERRNO;
|
|
if (ZREAD(pfile_in_zip_read_info->z_filefunc,
|
|
pfile_in_zip_read_info->filestream,
|
|
pfile_in_zip_read_info->read_buffer,
|
|
uReadThis)!=uReadThis)
|
|
return UNZ_ERRNO;
|
|
|
|
|
|
pfile_in_zip_read_info->pos_in_zipfile += uReadThis;
|
|
|
|
pfile_in_zip_read_info->rest_read_compressed-=uReadThis;
|
|
|
|
pfile_in_zip_read_info->stream.next_in =
|
|
(Bytef*)pfile_in_zip_read_info->read_buffer;
|
|
pfile_in_zip_read_info->stream.avail_in = (unsigned int)uReadThis;
|
|
}
|
|
|
|
if ((pfile_in_zip_read_info->compression_method==0) || (pfile_in_zip_read_info->raw))
|
|
{
|
|
unsigned int uDoCopy,i ;
|
|
|
|
if ((pfile_in_zip_read_info->stream.avail_in == 0) &&
|
|
(pfile_in_zip_read_info->rest_read_compressed == 0))
|
|
return (iRead==0) ? UNZ_EOF : iRead;
|
|
|
|
if (pfile_in_zip_read_info->stream.avail_out <
|
|
pfile_in_zip_read_info->stream.avail_in)
|
|
uDoCopy = pfile_in_zip_read_info->stream.avail_out ;
|
|
else
|
|
uDoCopy = pfile_in_zip_read_info->stream.avail_in ;
|
|
|
|
for (i=0;i<uDoCopy;i++)
|
|
*(pfile_in_zip_read_info->stream.next_out+i) =
|
|
*(pfile_in_zip_read_info->stream.next_in+i);
|
|
|
|
pfile_in_zip_read_info->crc32 = crc32(pfile_in_zip_read_info->crc32,
|
|
pfile_in_zip_read_info->stream.next_out,
|
|
uDoCopy);
|
|
pfile_in_zip_read_info->rest_read_uncompressed-=uDoCopy;
|
|
pfile_in_zip_read_info->stream.avail_in -= uDoCopy;
|
|
pfile_in_zip_read_info->stream.avail_out -= uDoCopy;
|
|
pfile_in_zip_read_info->stream.next_out += uDoCopy;
|
|
pfile_in_zip_read_info->stream.next_in += uDoCopy;
|
|
pfile_in_zip_read_info->stream.total_out += uDoCopy;
|
|
iRead += uDoCopy;
|
|
}
|
|
else
|
|
{
|
|
unsigned long uTotalOutBefore,uTotalOutAfter;
|
|
const Bytef *bufBefore;
|
|
unsigned long uOutThis;
|
|
int flush=Z_SYNC_FLUSH;
|
|
|
|
uTotalOutBefore = pfile_in_zip_read_info->stream.total_out;
|
|
bufBefore = pfile_in_zip_read_info->stream.next_out;
|
|
|
|
err=inflate(&pfile_in_zip_read_info->stream,flush);
|
|
|
|
if ((err>=0) && (pfile_in_zip_read_info->stream.msg!=NULL))
|
|
err = Z_DATA_ERROR;
|
|
|
|
uTotalOutAfter = pfile_in_zip_read_info->stream.total_out;
|
|
uOutThis = uTotalOutAfter-uTotalOutBefore;
|
|
|
|
pfile_in_zip_read_info->crc32 =
|
|
crc32(pfile_in_zip_read_info->crc32,bufBefore,
|
|
(unsigned int)(uOutThis));
|
|
|
|
pfile_in_zip_read_info->rest_read_uncompressed -=
|
|
uOutThis;
|
|
|
|
iRead += (unsigned int)(uTotalOutAfter - uTotalOutBefore);
|
|
|
|
if (err==Z_STREAM_END)
|
|
return (iRead==0) ? UNZ_EOF : iRead;
|
|
if (err!=Z_OK)
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (err==Z_OK)
|
|
return iRead;
|
|
return err;
|
|
}
|
|
|
|
extern z_off_t unztell (unzFile file)
|
|
{
|
|
unz_s* s;
|
|
file_in_zip_read_info_s* pfile_in_zip_read_info;
|
|
if (file==NULL)
|
|
return UNZ_PARAMERROR;
|
|
s=(unz_s*)file;
|
|
pfile_in_zip_read_info=s->pfile_in_zip_read;
|
|
|
|
if (pfile_in_zip_read_info==NULL)
|
|
return UNZ_PARAMERROR;
|
|
|
|
return (z_off_t)pfile_in_zip_read_info->stream.total_out;
|
|
}
|
|
|
|
extern int unzeof (unzFile file)
|
|
{
|
|
unz_s* s;
|
|
file_in_zip_read_info_s* pfile_in_zip_read_info;
|
|
if (file==NULL)
|
|
return UNZ_PARAMERROR;
|
|
s=(unz_s*)file;
|
|
pfile_in_zip_read_info=s->pfile_in_zip_read;
|
|
|
|
if (pfile_in_zip_read_info==NULL)
|
|
return UNZ_PARAMERROR;
|
|
|
|
if (pfile_in_zip_read_info->rest_read_uncompressed == 0)
|
|
return 1;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
extern int unzGetLocalExtrafield (unzFile file, voidp buf, unsigned len)
|
|
{
|
|
unz_s* s;
|
|
file_in_zip_read_info_s* pfile_in_zip_read_info;
|
|
unsigned int read_now;
|
|
unsigned long size_to_read;
|
|
|
|
if (file==NULL)
|
|
return UNZ_PARAMERROR;
|
|
s=(unz_s*)file;
|
|
pfile_in_zip_read_info=s->pfile_in_zip_read;
|
|
|
|
if (pfile_in_zip_read_info==NULL)
|
|
return UNZ_PARAMERROR;
|
|
|
|
size_to_read = (pfile_in_zip_read_info->size_local_extrafield -
|
|
pfile_in_zip_read_info->pos_local_extrafield);
|
|
|
|
if (buf==NULL)
|
|
return (int)size_to_read;
|
|
|
|
if (len>size_to_read)
|
|
read_now = (unsigned int)size_to_read;
|
|
else
|
|
read_now = (unsigned int)len ;
|
|
|
|
if (read_now==0)
|
|
return 0;
|
|
|
|
if (ZSEEK(pfile_in_zip_read_info->z_filefunc,
|
|
pfile_in_zip_read_info->filestream,
|
|
pfile_in_zip_read_info->offset_local_extrafield +
|
|
pfile_in_zip_read_info->pos_local_extrafield,
|
|
ZLIB_FILEFUNC_SEEK_SET)!=0)
|
|
return UNZ_ERRNO;
|
|
|
|
if (ZREAD(pfile_in_zip_read_info->z_filefunc,
|
|
pfile_in_zip_read_info->filestream,
|
|
buf,read_now)!=read_now)
|
|
return UNZ_ERRNO;
|
|
|
|
return (int)read_now;
|
|
}
|
|
|
|
extern int unzCloseCurrentFile (unzFile file)
|
|
{
|
|
int err=UNZ_OK;
|
|
|
|
unz_s* s;
|
|
file_in_zip_read_info_s* pfile_in_zip_read_info;
|
|
if (file==NULL)
|
|
return UNZ_PARAMERROR;
|
|
s=(unz_s*)file;
|
|
pfile_in_zip_read_info=s->pfile_in_zip_read;
|
|
|
|
if (pfile_in_zip_read_info==NULL)
|
|
return UNZ_PARAMERROR;
|
|
|
|
|
|
if ((pfile_in_zip_read_info->rest_read_uncompressed == 0) &&
|
|
(!pfile_in_zip_read_info->raw))
|
|
{
|
|
if (pfile_in_zip_read_info->crc32 != pfile_in_zip_read_info->crc32_wait)
|
|
err=UNZ_CRCERROR;
|
|
}
|
|
|
|
|
|
if(pfile_in_zip_read_info->read_buffer)
|
|
free(pfile_in_zip_read_info->read_buffer);
|
|
pfile_in_zip_read_info->read_buffer = NULL;
|
|
if (pfile_in_zip_read_info->stream_initialised)
|
|
inflateEnd(&pfile_in_zip_read_info->stream);
|
|
|
|
pfile_in_zip_read_info->stream_initialised = 0;
|
|
if(pfile_in_zip_read_info)
|
|
free(pfile_in_zip_read_info);
|
|
|
|
s->pfile_in_zip_read=NULL;
|
|
|
|
return err;
|
|
}
|
|
|
|
extern int unzGetGlobalComment (unzFile file, char *szComment, unsigned long uSizeBuf)
|
|
{
|
|
/* int err=UNZ_OK; */
|
|
unz_s* s;
|
|
unsigned long uReadThis ;
|
|
if (file==NULL)
|
|
return UNZ_PARAMERROR;
|
|
s=(unz_s*)file;
|
|
|
|
uReadThis = uSizeBuf;
|
|
if (uReadThis>s->gi.size_comment)
|
|
uReadThis = s->gi.size_comment;
|
|
|
|
if (ZSEEK(s->z_filefunc,s->filestream,s->central_pos+22,ZLIB_FILEFUNC_SEEK_SET)!=0)
|
|
return UNZ_ERRNO;
|
|
|
|
if (uReadThis>0)
|
|
{
|
|
*szComment='\0';
|
|
if (ZREAD(s->z_filefunc,s->filestream,szComment,uReadThis)!=uReadThis)
|
|
return UNZ_ERRNO;
|
|
}
|
|
|
|
if ((szComment != NULL) && (uSizeBuf > s->gi.size_comment))
|
|
*(szComment+s->gi.size_comment)='\0';
|
|
return (int)uReadThis;
|
|
}
|
|
|
|
extern unsigned long unzGetOffset (unzFile file)
|
|
{
|
|
unz_s* s;
|
|
|
|
if (file==NULL)
|
|
return UNZ_PARAMERROR_UL;
|
|
s=(unz_s*)file;
|
|
if (!s->current_file_ok)
|
|
return 0;
|
|
if (s->gi.number_entry != 0 && s->gi.number_entry != 0xffff)
|
|
if (s->num_file==s->gi.number_entry)
|
|
return 0;
|
|
return s->pos_in_central_dir;
|
|
}
|
|
|
|
extern int unzSetOffset (unzFile file, unsigned long pos)
|
|
{
|
|
unz_s* s;
|
|
int err;
|
|
|
|
if (file==NULL)
|
|
return UNZ_PARAMERROR;
|
|
s=(unz_s*)file;
|
|
|
|
s->pos_in_central_dir = pos;
|
|
s->num_file = s->gi.number_entry; /* hack */
|
|
err = unzlocal_GetCurrentFileInfoInternal(file,&s->cur_file_info,
|
|
&s->cur_file_info_internal,
|
|
NULL,0,NULL,0,NULL,0);
|
|
s->current_file_ok = (err == UNZ_OK);
|
|
return err;
|
|
}
|
|
|
|
int uncompress (unsigned char *dest, unsigned int *destLen, const unsigned char *source, unsigned int sourceLen)
|
|
{
|
|
z_stream stream;
|
|
int err;
|
|
|
|
stream.next_in = (unsigned char*)source;
|
|
stream.avail_in = (unsigned int)sourceLen;
|
|
/* Check for source > 64K on 16-bit machine: */
|
|
if ((unsigned int)stream.avail_in != sourceLen) return Z_BUF_ERROR;
|
|
|
|
stream.next_out = dest;
|
|
stream.avail_out = (unsigned int)*destLen;
|
|
if ((unsigned int)stream.avail_out != *destLen) return Z_BUF_ERROR;
|
|
|
|
stream.zalloc = (alloc_func)0;
|
|
stream.zfree = (free_func)0;
|
|
|
|
err = inflateInit(&stream);
|
|
if (err != Z_OK) return err;
|
|
|
|
err = inflate(&stream, Z_FINISH);
|
|
if (err != Z_STREAM_END) {
|
|
inflateEnd(&stream);
|
|
if (err == Z_NEED_DICT || (err == Z_BUF_ERROR && stream.avail_in == 0))
|
|
return Z_DATA_ERROR;
|
|
return err;
|
|
}
|
|
*destLen = stream.total_out;
|
|
|
|
err = inflateEnd(&stream);
|
|
return err;
|
|
}
|