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authorRajithaY <rajithax.yerrumsetty@intel.com>2017-04-25 03:31:15 -0700
committerRajitha Yerrumchetty <rajithax.yerrumsetty@intel.com>2017-05-22 06:48:08 +0000
commitbb756eebdac6fd24e8919e2c43f7d2c8c4091f59 (patch)
treeca11e03542edf2d8f631efeca5e1626d211107e3 /qemu/roms/u-boot/lib/zlib/inflate.c
parenta14b48d18a9ed03ec191cf16b162206998a895ce (diff)
Adding qemu as a submodule of KVMFORNFV
This Patch includes the changes to add qemu as a submodule to kvmfornfv repo and make use of the updated latest qemu for the execution of all testcase Change-Id: I1280af507a857675c7f81d30c95255635667bdd7 Signed-off-by:RajithaY<rajithax.yerrumsetty@intel.com>
Diffstat (limited to 'qemu/roms/u-boot/lib/zlib/inflate.c')
-rw-r--r--qemu/roms/u-boot/lib/zlib/inflate.c943
1 files changed, 0 insertions, 943 deletions
diff --git a/qemu/roms/u-boot/lib/zlib/inflate.c b/qemu/roms/u-boot/lib/zlib/inflate.c
deleted file mode 100644
index 6411c4793..000000000
--- a/qemu/roms/u-boot/lib/zlib/inflate.c
+++ /dev/null
@@ -1,943 +0,0 @@
-/* inflate.c -- zlib decompression
- * Copyright (C) 1995-2005 Mark Adler
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-local void fixedtables OF((struct inflate_state FAR *state));
-local int updatewindow OF((z_streamp strm, unsigned out));
-
-int ZEXPORT inflateReset(z_streamp strm)
-{
- struct inflate_state FAR *state;
-
- if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
- state = (struct inflate_state FAR *)strm->state;
- strm->total_in = strm->total_out = state->total = 0;
- strm->msg = Z_NULL;
- strm->adler = 1; /* to support ill-conceived Java test suite */
- state->mode = HEAD;
- state->last = 0;
- state->havedict = 0;
- state->dmax = 32768U;
- state->head = Z_NULL;
- state->wsize = 0;
- state->whave = 0;
- state->write = 0;
- state->hold = 0;
- state->bits = 0;
- state->lencode = state->distcode = state->next = state->codes;
- WATCHDOG_RESET();
- Tracev((stderr, "inflate: reset\n"));
- return Z_OK;
-}
-
-int ZEXPORT inflateInit2_(z_streamp strm, int windowBits, const char *version,
- int stream_size)
-{
- struct inflate_state FAR *state;
-
- if (version == Z_NULL || version[0] != ZLIB_VERSION[0] ||
- stream_size != (int)(sizeof(z_stream)))
- return Z_VERSION_ERROR;
- if (strm == Z_NULL) return Z_STREAM_ERROR;
- strm->msg = Z_NULL; /* in case we return an error */
- if (strm->zalloc == (alloc_func)0) {
- strm->zalloc = zcalloc;
- strm->opaque = (voidpf)0;
- }
- if (strm->zfree == (free_func)0) strm->zfree = zcfree;
- state = (struct inflate_state FAR *)
- ZALLOC(strm, 1, sizeof(struct inflate_state));
- if (state == Z_NULL) return Z_MEM_ERROR;
- Tracev((stderr, "inflate: allocated\n"));
- strm->state = (struct internal_state FAR *)state;
- if (windowBits < 0) {
- state->wrap = 0;
- windowBits = -windowBits;
- }
- else {
- state->wrap = (windowBits >> 4) + 1;
-#ifdef GUNZIP
- if (windowBits < 48) windowBits &= 15;
-#endif
- }
- if (windowBits < 8 || windowBits > 15) {
- ZFREE(strm, state);
- strm->state = Z_NULL;
- return Z_STREAM_ERROR;
- }
- state->wbits = (unsigned)windowBits;
- state->window = Z_NULL;
- return inflateReset(strm);
-}
-
-int ZEXPORT inflateInit_(z_streamp strm, const char *version, int stream_size)
-{
- return inflateInit2_(strm, DEF_WBITS, version, stream_size);
-}
-
-local void fixedtables(struct inflate_state FAR *state)
-{
- state->lencode = lenfix;
- state->lenbits = 9;
- state->distcode = distfix;
- state->distbits = 5;
-}
-
-/*
- Update the window with the last wsize (normally 32K) bytes written before
- returning. If window does not exist yet, create it. This is only called
- when a window is already in use, or when output has been written during this
- inflate call, but the end of the deflate stream has not been reached yet.
- It is also called to create a window for dictionary data when a dictionary
- is loaded.
-
- Providing output buffers larger than 32K to inflate() should provide a speed
- advantage, since only the last 32K of output is copied to the sliding window
- upon return from inflate(), and since all distances after the first 32K of
- output will fall in the output data, making match copies simpler and faster.
- The advantage may be dependent on the size of the processor's data caches.
- */
-local int updatewindow(z_streamp strm, unsigned out)
-{
- struct inflate_state FAR *state;
- unsigned copy, dist;
-
- state = (struct inflate_state FAR *)strm->state;
-
- /* if it hasn't been done already, allocate space for the window */
- if (state->window == Z_NULL) {
- state->window = (unsigned char FAR *)
- ZALLOC(strm, 1U << state->wbits,
- sizeof(unsigned char));
- if (state->window == Z_NULL) return 1;
- }
-
- /* if window not in use yet, initialize */
- if (state->wsize == 0) {
- state->wsize = 1U << state->wbits;
- state->write = 0;
- state->whave = 0;
- }
-
- /* copy state->wsize or less output bytes into the circular window */
- copy = out - strm->avail_out;
- if (copy >= state->wsize) {
- zmemcpy(state->window, strm->next_out - state->wsize, state->wsize);
- state->write = 0;
- state->whave = state->wsize;
- }
- else {
- dist = state->wsize - state->write;
- if (dist > copy) dist = copy;
- zmemcpy(state->window + state->write, strm->next_out - copy, dist);
- copy -= dist;
- if (copy) {
- zmemcpy(state->window, strm->next_out - copy, copy);
- state->write = copy;
- state->whave = state->wsize;
- }
- else {
- state->write += dist;
- if (state->write == state->wsize) state->write = 0;
- if (state->whave < state->wsize) state->whave += dist;
- }
- }
- return 0;
-}
-
-/* Macros for inflate(): */
-
-/* check function to use adler32() for zlib or crc32() for gzip */
-#ifdef GUNZIP
-# define UPDATE(check, buf, len) \
- (state->flags ? crc32(check, buf, len) : adler32(check, buf, len))
-#else
-# define UPDATE(check, buf, len) adler32(check, buf, len)
-#endif
-
-/* check macros for header crc */
-#ifdef GUNZIP
-# define CRC2(check, word) \
- do { \
- hbuf[0] = (unsigned char)(word); \
- hbuf[1] = (unsigned char)((word) >> 8); \
- check = crc32(check, hbuf, 2); \
- } while (0)
-
-# define CRC4(check, word) \
- do { \
- hbuf[0] = (unsigned char)(word); \
- hbuf[1] = (unsigned char)((word) >> 8); \
- hbuf[2] = (unsigned char)((word) >> 16); \
- hbuf[3] = (unsigned char)((word) >> 24); \
- check = crc32(check, hbuf, 4); \
- } while (0)
-#endif
-
-/* Load registers with state in inflate() for speed */
-#define LOAD() \
- do { \
- put = strm->next_out; \
- left = strm->avail_out; \
- next = strm->next_in; \
- have = strm->avail_in; \
- hold = state->hold; \
- bits = state->bits; \
- } while (0)
-
-/* Restore state from registers in inflate() */
-#define RESTORE() \
- do { \
- strm->next_out = put; \
- strm->avail_out = left; \
- strm->next_in = next; \
- strm->avail_in = have; \
- state->hold = hold; \
- state->bits = bits; \
- } while (0)
-
-/* Clear the input bit accumulator */
-#define INITBITS() \
- do { \
- hold = 0; \
- bits = 0; \
- } while (0)
-
-/* Get a byte of input into the bit accumulator, or return from inflate()
- if there is no input available. */
-#define PULLBYTE() \
- do { \
- if (have == 0) goto inf_leave; \
- have--; \
- hold += (unsigned long)(*next++) << bits; \
- bits += 8; \
- } while (0)
-
-/* Assure that there are at least n bits in the bit accumulator. If there is
- not enough available input to do that, then return from inflate(). */
-#define NEEDBITS(n) \
- do { \
- while (bits < (unsigned)(n)) \
- PULLBYTE(); \
- } while (0)
-
-/* Return the low n bits of the bit accumulator (n < 16) */
-#define BITS(n) \
- ((unsigned)hold & ((1U << (n)) - 1))
-
-/* Remove n bits from the bit accumulator */
-#define DROPBITS(n) \
- do { \
- hold >>= (n); \
- bits -= (unsigned)(n); \
- } while (0)
-
-/* Remove zero to seven bits as needed to go to a byte boundary */
-#define BYTEBITS() \
- do { \
- hold >>= bits & 7; \
- bits -= bits & 7; \
- } while (0)
-
-/* Reverse the bytes in a 32-bit value */
-#define REVERSE(q) \
- ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \
- (((q) & 0xff00) << 8) + (((q) & 0xff) << 24))
-
-/*
- inflate() uses a state machine to process as much input data and generate as
- much output data as possible before returning. The state machine is
- structured roughly as follows:
-
- for (;;) switch (state) {
- ...
- case STATEn:
- if (not enough input data or output space to make progress)
- return;
- ... make progress ...
- state = STATEm;
- break;
- ...
- }
-
- so when inflate() is called again, the same case is attempted again, and
- if the appropriate resources are provided, the machine proceeds to the
- next state. The NEEDBITS() macro is usually the way the state evaluates
- whether it can proceed or should return. NEEDBITS() does the return if
- the requested bits are not available. The typical use of the BITS macros
- is:
-
- NEEDBITS(n);
- ... do something with BITS(n) ...
- DROPBITS(n);
-
- where NEEDBITS(n) either returns from inflate() if there isn't enough
- input left to load n bits into the accumulator, or it continues. BITS(n)
- gives the low n bits in the accumulator. When done, DROPBITS(n) drops
- the low n bits off the accumulator. INITBITS() clears the accumulator
- and sets the number of available bits to zero. BYTEBITS() discards just
- enough bits to put the accumulator on a byte boundary. After BYTEBITS()
- and a NEEDBITS(8), then BITS(8) would return the next byte in the stream.
-
- NEEDBITS(n) uses PULLBYTE() to get an available byte of input, or to return
- if there is no input available. The decoding of variable length codes uses
- PULLBYTE() directly in order to pull just enough bytes to decode the next
- code, and no more.
-
- Some states loop until they get enough input, making sure that enough
- state information is maintained to continue the loop where it left off
- if NEEDBITS() returns in the loop. For example, want, need, and keep
- would all have to actually be part of the saved state in case NEEDBITS()
- returns:
-
- case STATEw:
- while (want < need) {
- NEEDBITS(n);
- keep[want++] = BITS(n);
- DROPBITS(n);
- }
- state = STATEx;
- case STATEx:
-
- As shown above, if the next state is also the next case, then the break
- is omitted.
-
- A state may also return if there is not enough output space available to
- complete that state. Those states are copying stored data, writing a
- literal byte, and copying a matching string.
-
- When returning, a "goto inf_leave" is used to update the total counters,
- update the check value, and determine whether any progress has been made
- during that inflate() call in order to return the proper return code.
- Progress is defined as a change in either strm->avail_in or strm->avail_out.
- When there is a window, goto inf_leave will update the window with the last
- output written. If a goto inf_leave occurs in the middle of decompression
- and there is no window currently, goto inf_leave will create one and copy
- output to the window for the next call of inflate().
-
- In this implementation, the flush parameter of inflate() only affects the
- return code (per zlib.h). inflate() always writes as much as possible to
- strm->next_out, given the space available and the provided input--the effect
- documented in zlib.h of Z_SYNC_FLUSH. Furthermore, inflate() always defers
- the allocation of and copying into a sliding window until necessary, which
- provides the effect documented in zlib.h for Z_FINISH when the entire input
- stream available. So the only thing the flush parameter actually does is:
- when flush is set to Z_FINISH, inflate() cannot return Z_OK. Instead it
- will return Z_BUF_ERROR if it has not reached the end of the stream.
- */
-int ZEXPORT inflate(z_streamp strm, int flush)
-{
- struct inflate_state FAR *state;
- unsigned char FAR *next; /* next input */
- unsigned char FAR *put; /* next output */
- unsigned have, left; /* available input and output */
- unsigned long hold; /* bit buffer */
- unsigned bits; /* bits in bit buffer */
- unsigned in, out; /* save starting available input and output */
- unsigned copy; /* number of stored or match bytes to copy */
- unsigned char FAR *from; /* where to copy match bytes from */
- code this; /* current decoding table entry */
- code last; /* parent table entry */
- unsigned len; /* length to copy for repeats, bits to drop */
- int ret; /* return code */
-#ifdef GUNZIP
- unsigned char hbuf[4]; /* buffer for gzip header crc calculation */
-#endif
- static const unsigned short order[19] = /* permutation of code lengths */
- {16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15};
-
- if (strm == Z_NULL || strm->state == Z_NULL ||
- (strm->next_in == Z_NULL && strm->avail_in != 0))
- return Z_STREAM_ERROR;
-
- state = (struct inflate_state FAR *)strm->state;
- if (state->mode == TYPE) state->mode = TYPEDO; /* skip check */
- LOAD();
- in = have;
- out = left;
- ret = Z_OK;
- for (;;)
- switch (state->mode) {
- case HEAD:
- if (state->wrap == 0) {
- state->mode = TYPEDO;
- break;
- }
- NEEDBITS(16);
-#ifdef GUNZIP
- if ((state->wrap & 2) && hold == 0x8b1f) { /* gzip header */
- state->check = crc32(0L, Z_NULL, 0);
- CRC2(state->check, hold);
- INITBITS();
- state->mode = FLAGS;
- break;
- }
- state->flags = 0; /* expect zlib header */
- if (state->head != Z_NULL)
- state->head->done = -1;
- if (!(state->wrap & 1) || /* check if zlib header allowed */
-#else
- if (
-#endif
- ((BITS(8) << 8) + (hold >> 8)) % 31) {
- strm->msg = (char *)"incorrect header check";
- state->mode = BAD;
- break;
- }
- if (BITS(4) != Z_DEFLATED) {
- strm->msg = (char *)"unknown compression method";
- state->mode = BAD;
- break;
- }
- DROPBITS(4);
- len = BITS(4) + 8;
- if (len > state->wbits) {
- strm->msg = (char *)"invalid window size";
- state->mode = BAD;
- break;
- }
- state->dmax = 1U << len;
- Tracev((stderr, "inflate: zlib header ok\n"));
- strm->adler = state->check = adler32(0L, Z_NULL, 0);
- state->mode = hold & 0x200 ? DICTID : TYPE;
- INITBITS();
- break;
-#ifdef GUNZIP
- case FLAGS:
- NEEDBITS(16);
- state->flags = (int)(hold);
- if ((state->flags & 0xff) != Z_DEFLATED) {
- strm->msg = (char *)"unknown compression method";
- state->mode = BAD;
- break;
- }
- if (state->flags & 0xe000) {
- strm->msg = (char *)"unknown header flags set";
- state->mode = BAD;
- break;
- }
- if (state->head != Z_NULL)
- state->head->text = (int)((hold >> 8) & 1);
- if (state->flags & 0x0200) CRC2(state->check, hold);
- INITBITS();
- state->mode = TIME;
- case TIME:
- NEEDBITS(32);
- if (state->head != Z_NULL)
- state->head->time = hold;
- if (state->flags & 0x0200) CRC4(state->check, hold);
- INITBITS();
- state->mode = OS;
- case OS:
- NEEDBITS(16);
- if (state->head != Z_NULL) {
- state->head->xflags = (int)(hold & 0xff);
- state->head->os = (int)(hold >> 8);
- }
- if (state->flags & 0x0200) CRC2(state->check, hold);
- INITBITS();
- state->mode = EXLEN;
- case EXLEN:
- if (state->flags & 0x0400) {
- NEEDBITS(16);
- state->length = (unsigned)(hold);
- if (state->head != Z_NULL)
- state->head->extra_len = (unsigned)hold;
- if (state->flags & 0x0200) CRC2(state->check, hold);
- INITBITS();
- }
- else if (state->head != Z_NULL)
- state->head->extra = Z_NULL;
- state->mode = EXTRA;
- case EXTRA:
- if (state->flags & 0x0400) {
- copy = state->length;
- if (copy > have) copy = have;
- if (copy) {
- if (state->head != Z_NULL &&
- state->head->extra != Z_NULL) {
- len = state->head->extra_len - state->length;
- zmemcpy(state->head->extra + len, next,
- len + copy > state->head->extra_max ?
- state->head->extra_max - len : copy);
- }
- if (state->flags & 0x0200)
- state->check = crc32(state->check, next, copy);
- have -= copy;
- next += copy;
- state->length -= copy;
- }
- if (state->length) goto inf_leave;
- }
- state->length = 0;
- state->mode = NAME;
- case NAME:
- if (state->flags & 0x0800) {
- if (have == 0) goto inf_leave;
- copy = 0;
- do {
- len = (unsigned)(next[copy++]);
- if (state->head != Z_NULL &&
- state->head->name != Z_NULL &&
- state->length < state->head->name_max)
- state->head->name[state->length++] = len;
- } while (len && copy < have);
- if (state->flags & 0x0200)
- state->check = crc32(state->check, next, copy);
- have -= copy;
- next += copy;
- if (len) goto inf_leave;
- }
- else if (state->head != Z_NULL)
- state->head->name = Z_NULL;
- state->length = 0;
- state->mode = COMMENT;
- case COMMENT:
- if (state->flags & 0x1000) {
- if (have == 0) goto inf_leave;
- copy = 0;
- do {
- len = (unsigned)(next[copy++]);
- if (state->head != Z_NULL &&
- state->head->comment != Z_NULL &&
- state->length < state->head->comm_max)
- state->head->comment[state->length++] = len;
- } while (len && copy < have);
- if (state->flags & 0x0200)
- state->check = crc32(state->check, next, copy);
- have -= copy;
- next += copy;
- if (len) goto inf_leave;
- }
- else if (state->head != Z_NULL)
- state->head->comment = Z_NULL;
- state->mode = HCRC;
- case HCRC:
- if (state->flags & 0x0200) {
- NEEDBITS(16);
- if (hold != (state->check & 0xffff)) {
- strm->msg = (char *)"header crc mismatch";
- state->mode = BAD;
- break;
- }
- INITBITS();
- }
- if (state->head != Z_NULL) {
- state->head->hcrc = (int)((state->flags >> 9) & 1);
- state->head->done = 1;
- }
- strm->adler = state->check = crc32(0L, Z_NULL, 0);
- state->mode = TYPE;
- break;
-#endif
- case DICTID:
- NEEDBITS(32);
- strm->adler = state->check = REVERSE(hold);
- INITBITS();
- state->mode = DICT;
- case DICT:
- if (state->havedict == 0) {
- RESTORE();
- return Z_NEED_DICT;
- }
- strm->adler = state->check = adler32(0L, Z_NULL, 0);
- state->mode = TYPE;
- case TYPE:
- WATCHDOG_RESET();
- if (flush == Z_BLOCK) goto inf_leave;
- case TYPEDO:
- if (state->last) {
- BYTEBITS();
- state->mode = CHECK;
- break;
- }
- NEEDBITS(3);
- state->last = BITS(1);
- DROPBITS(1);
- switch (BITS(2)) {
- case 0: /* stored block */
- Tracev((stderr, "inflate: stored block%s\n",
- state->last ? " (last)" : ""));
- state->mode = STORED;
- break;
- case 1: /* fixed block */
- fixedtables(state);
- Tracev((stderr, "inflate: fixed codes block%s\n",
- state->last ? " (last)" : ""));
- state->mode = LEN; /* decode codes */
- break;
- case 2: /* dynamic block */
- Tracev((stderr, "inflate: dynamic codes block%s\n",
- state->last ? " (last)" : ""));
- state->mode = TABLE;
- break;
- case 3:
- strm->msg = (char *)"invalid block type";
- state->mode = BAD;
- }
- DROPBITS(2);
- break;
- case STORED:
- BYTEBITS(); /* go to byte boundary */
- NEEDBITS(32);
- if ((hold & 0xffff) != ((hold >> 16) ^ 0xffff)) {
- strm->msg = (char *)"invalid stored block lengths";
- state->mode = BAD;
- break;
- }
- state->length = (unsigned)hold & 0xffff;
- Tracev((stderr, "inflate: stored length %u\n",
- state->length));
- INITBITS();
- state->mode = COPY;
- case COPY:
- copy = state->length;
- if (copy) {
- if (copy > have) copy = have;
- if (copy > left) copy = left;
- if (copy == 0) goto inf_leave;
- zmemcpy(put, next, copy);
- have -= copy;
- next += copy;
- left -= copy;
- put += copy;
- state->length -= copy;
- break;
- }
- Tracev((stderr, "inflate: stored end\n"));
- state->mode = TYPE;
- break;
- case TABLE:
- NEEDBITS(14);
- state->nlen = BITS(5) + 257;
- DROPBITS(5);
- state->ndist = BITS(5) + 1;
- DROPBITS(5);
- state->ncode = BITS(4) + 4;
- DROPBITS(4);
-#ifndef PKZIP_BUG_WORKAROUND
- if (state->nlen > 286 || state->ndist > 30) {
- strm->msg = (char *)"too many length or distance symbols";
- state->mode = BAD;
- break;
- }
-#endif
- Tracev((stderr, "inflate: table sizes ok\n"));
- state->have = 0;
- state->mode = LENLENS;
- case LENLENS:
- while (state->have < state->ncode) {
- NEEDBITS(3);
- state->lens[order[state->have++]] = (unsigned short)BITS(3);
- DROPBITS(3);
- }
- while (state->have < 19)
- state->lens[order[state->have++]] = 0;
- state->next = state->codes;
- state->lencode = (code const FAR *)(state->next);
- state->lenbits = 7;
- ret = inflate_table(CODES, state->lens, 19, &(state->next),
- &(state->lenbits), state->work);
- if (ret) {
- strm->msg = (char *)"invalid code lengths set";
- state->mode = BAD;
- break;
- }
- Tracev((stderr, "inflate: code lengths ok\n"));
- state->have = 0;
- state->mode = CODELENS;
- case CODELENS:
- while (state->have < state->nlen + state->ndist) {
- for (;;) {
- this = state->lencode[BITS(state->lenbits)];
- if ((unsigned)(this.bits) <= bits) break;
- PULLBYTE();
- }
- if (this.val < 16) {
- NEEDBITS(this.bits);
- DROPBITS(this.bits);
- state->lens[state->have++] = this.val;
- }
- else {
- if (this.val == 16) {
- NEEDBITS(this.bits + 2);
- DROPBITS(this.bits);
- if (state->have == 0) {
- strm->msg = (char *)"invalid bit length repeat";
- state->mode = BAD;
- break;
- }
- len = state->lens[state->have - 1];
- copy = 3 + BITS(2);
- DROPBITS(2);
- }
- else if (this.val == 17) {
- NEEDBITS(this.bits + 3);
- DROPBITS(this.bits);
- len = 0;
- copy = 3 + BITS(3);
- DROPBITS(3);
- }
- else {
- NEEDBITS(this.bits + 7);
- DROPBITS(this.bits);
- len = 0;
- copy = 11 + BITS(7);
- DROPBITS(7);
- }
- if (state->have + copy > state->nlen + state->ndist) {
- strm->msg = (char *)"invalid bit length repeat";
- state->mode = BAD;
- break;
- }
- while (copy--)
- state->lens[state->have++] = (unsigned short)len;
- }
- }
-
- /* handle error breaks in while */
- if (state->mode == BAD) break;
-
- /* build code tables */
- state->next = state->codes;
- state->lencode = (code const FAR *)(state->next);
- state->lenbits = 9;
- ret = inflate_table(LENS, state->lens, state->nlen, &(state->next),
- &(state->lenbits), state->work);
- if (ret) {
- strm->msg = (char *)"invalid literal/lengths set";
- state->mode = BAD;
- break;
- }
- state->distcode = (code const FAR *)(state->next);
- state->distbits = 6;
- ret = inflate_table(DISTS, state->lens + state->nlen, state->ndist,
- &(state->next), &(state->distbits), state->work);
- if (ret) {
- strm->msg = (char *)"invalid distances set";
- state->mode = BAD;
- break;
- }
- Tracev((stderr, "inflate: codes ok\n"));
- state->mode = LEN;
- case LEN:
- WATCHDOG_RESET();
- if (have >= 6 && left >= 258) {
- RESTORE();
- inflate_fast(strm, out);
- LOAD();
- break;
- }
- for (;;) {
- this = state->lencode[BITS(state->lenbits)];
- if ((unsigned)(this.bits) <= bits) break;
- PULLBYTE();
- }
- if (this.op && (this.op & 0xf0) == 0) {
- last = this;
- for (;;) {
- this = state->lencode[last.val +
- (BITS(last.bits + last.op) >> last.bits)];
- if ((unsigned)(last.bits + this.bits) <= bits) break;
- PULLBYTE();
- }
- DROPBITS(last.bits);
- }
- DROPBITS(this.bits);
- state->length = (unsigned)this.val;
- if ((int)(this.op) == 0) {
- Tracevv((stderr, this.val >= 0x20 && this.val < 0x7f ?
- "inflate: literal '%c'\n" :
- "inflate: literal 0x%02x\n", this.val));
- state->mode = LIT;
- break;
- }
- if (this.op & 32) {
- Tracevv((stderr, "inflate: end of block\n"));
- state->mode = TYPE;
- break;
- }
- if (this.op & 64) {
- strm->msg = (char *)"invalid literal/length code";
- state->mode = BAD;
- break;
- }
- state->extra = (unsigned)(this.op) & 15;
- state->mode = LENEXT;
- case LENEXT:
- if (state->extra) {
- NEEDBITS(state->extra);
- state->length += BITS(state->extra);
- DROPBITS(state->extra);
- }
- Tracevv((stderr, "inflate: length %u\n", state->length));
- state->mode = DIST;
- case DIST:
- for (;;) {
- this = state->distcode[BITS(state->distbits)];
- if ((unsigned)(this.bits) <= bits) break;
- PULLBYTE();
- }
- if ((this.op & 0xf0) == 0) {
- last = this;
- for (;;) {
- this = state->distcode[last.val +
- (BITS(last.bits + last.op) >> last.bits)];
- if ((unsigned)(last.bits + this.bits) <= bits) break;
- PULLBYTE();
- }
- DROPBITS(last.bits);
- }
- DROPBITS(this.bits);
- if (this.op & 64) {
- strm->msg = (char *)"invalid distance code";
- state->mode = BAD;
- break;
- }
- state->offset = (unsigned)this.val;
- state->extra = (unsigned)(this.op) & 15;
- state->mode = DISTEXT;
- case DISTEXT:
- if (state->extra) {
- NEEDBITS(state->extra);
- state->offset += BITS(state->extra);
- DROPBITS(state->extra);
- }
-#ifdef INFLATE_STRICT
- if (state->offset > state->dmax) {
- strm->msg = (char *)"invalid distance too far back";
- state->mode = BAD;
- break;
- }
-#endif
- if (state->offset > state->whave + out - left) {
- strm->msg = (char *)"invalid distance too far back";
- state->mode = BAD;
- break;
- }
- Tracevv((stderr, "inflate: distance %u\n", state->offset));
- state->mode = MATCH;
- case MATCH:
- if (left == 0) goto inf_leave;
- copy = out - left;
- if (state->offset > copy) { /* copy from window */
- copy = state->offset - copy;
- if (copy > state->write) {
- copy -= state->write;
- from = state->window + (state->wsize - copy);
- }
- else
- from = state->window + (state->write - copy);
- if (copy > state->length) copy = state->length;
- }
- else { /* copy from output */
- from = put - state->offset;
- copy = state->length;
- }
- if (copy > left) copy = left;
- left -= copy;
- state->length -= copy;
- do {
- *put++ = *from++;
- } while (--copy);
- if (state->length == 0) state->mode = LEN;
- break;
- case LIT:
- if (left == 0) goto inf_leave;
- *put++ = (unsigned char)(state->length);
- left--;
- state->mode = LEN;
- break;
- case CHECK:
- if (state->wrap) {
- NEEDBITS(32);
- out -= left;
- strm->total_out += out;
- state->total += out;
- if (out)
- strm->adler = state->check =
- UPDATE(state->check, put - out, out);
- out = left;
- if ((
-#ifdef GUNZIP
- state->flags ? hold :
-#endif
- REVERSE(hold)) != state->check) {
- strm->msg = (char *)"incorrect data check";
- state->mode = BAD;
- break;
- }
- INITBITS();
- Tracev((stderr, "inflate: check matches trailer\n"));
- }
-#ifdef GUNZIP
- state->mode = LENGTH;
- case LENGTH:
- if (state->wrap && state->flags) {
- NEEDBITS(32);
- if (hold != (state->total & 0xffffffffUL)) {
- strm->msg = (char *)"incorrect length check";
- state->mode = BAD;
- break;
- }
- INITBITS();
- Tracev((stderr, "inflate: length matches trailer\n"));
- }
-#endif
- state->mode = DONE;
- case DONE:
- ret = Z_STREAM_END;
- goto inf_leave;
- case BAD:
- ret = Z_DATA_ERROR;
- goto inf_leave;
- case MEM:
- return Z_MEM_ERROR;
- case SYNC:
- default:
- return Z_STREAM_ERROR;
- }
-
- /*
- Return from inflate(), updating the total counts and the check value.
- If there was no progress during the inflate() call, return a buffer
- error. Call updatewindow() to create and/or update the window state.
- Note: a memory error from inflate() is non-recoverable.
- */
- inf_leave:
- RESTORE();
- if (state->wsize || (state->mode < CHECK && out != strm->avail_out))
- if (updatewindow(strm, out)) {
- state->mode = MEM;
- return Z_MEM_ERROR;
- }
- in -= strm->avail_in;
- out -= strm->avail_out;
- strm->total_in += in;
- strm->total_out += out;
- state->total += out;
- if (state->wrap && out)
- strm->adler = state->check =
- UPDATE(state->check, strm->next_out - out, out);
- strm->data_type = state->bits + (state->last ? 64 : 0) +
- (state->mode == TYPE ? 128 : 0);
- if (((in == 0 && out == 0) || flush == Z_FINISH) && ret == Z_OK)
- ret = Z_BUF_ERROR;
- return ret;
-}
-
-int ZEXPORT inflateEnd(z_streamp strm)
-{
- struct inflate_state FAR *state;
- if (strm == Z_NULL || strm->state == Z_NULL || strm->zfree == (free_func)0)
- return Z_STREAM_ERROR;
- state = (struct inflate_state FAR *)strm->state;
- if (state->window != Z_NULL) {
- WATCHDOG_RESET();
- ZFREE(strm, state->window);
- }
- ZFREE(strm, strm->state);
- strm->state = Z_NULL;
- Tracev((stderr, "inflate: end\n"));
- return Z_OK;
-}