..
This commit is contained in:
cool
parent
73a2ab9eaa
commit
83b39eea32
@ -19,6 +19,78 @@
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#include "rdp.h"
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static uint8 HuffLengthLEC[] = {
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0x6, 0x6, 0x6, 0x6, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, 0x9, 0x8, 0x9, 0x9, 0x9, 0x9, 0x8, 0x8, 0x9, 0x9, 0x9, 0x9, 0x9, 0x8, 0x9, 0x9, 0xa, 0x9, 0x9, 0x9, 0x9, 0x9, 0x9, 0x9, 0xa, 0x9, 0xa, 0xa, 0xa, 0x9, 0x9, 0x9, 0xa, 0x9, 0xa, 0xa, 0xa, 0x9, 0x9, 0xa, 0xa, 0x9, 0xa, 0x9, 0x9, 0x8, 0x9, 0x9, 0x9, 0x9, 0xa, 0xa, 0xa, 0x9, 0x9, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0x9, 0x9, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0x9, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0x8, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0x9, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0x9, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0x9, 0x7, 0x9, 0x9, 0xa, 0x9, 0xa, 0xa, 0xa, 0x9, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0x9, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xd, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xb, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0x9, 0xa, 0xa, 0xa, 0xa, 0xa, 0x9, 0xa, 0xa, 0xa, 0xa, 0xa, 0x9, 0xa, 0xa, 0xa, 0x9, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0x9, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, 0x9, 0xa, 0x8, 0x9, 0x9, 0xa, 0x9, 0xa, 0xa, 0xa, 0x9, 0xa, 0xa, 0xa, 0x9, 0x9, 0x8, 0x7, 0xd, 0xd, 0x7, 0x7, 0xa, 0x7, 0x7, 0x6, 0x6, 0x6, 0x6, 0x5, 0x6, 0x6, 0x6, 0x5, 0x6, 0x5, 0x6, 0x6, 0x6, 0x6, 0x6, 0x6, 0x6, 0x6, 0x6, 0x6, 0x6, 0x6, 0x6, 0x6, 0x8, 0x5, 0x6, 0x7, 0x7 };
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static uint16 HuffIndexLEC[512] = {
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0x007b, 0xff1f, 0xff0d, 0xfe27, 0xfe00, 0xff05, 0xff17, 0xfe68, 0x00c5, 0xfe07, 0xff13, 0xfec0, 0xff08, 0xfe18, 0xff1b, 0xfeb3, 0xfe03, 0x00a2, 0xfe42, 0xff10, 0xfe0b, 0xfe02, 0xfe91, 0xff19, 0xfe80, 0x00e9, 0xfe3a, 0xff15, 0xfe12, 0x0057, 0xfed7, 0xff1d, 0xff0e, 0xfe35, 0xfe69, 0xff22, 0xff18, 0xfe7a, 0xfe01, 0xff23, 0xff14, 0xfef4, 0xfeb4, 0xfe09, 0xff1c, 0xfec4, 0xff09, 0xfe60, 0xfe70, 0xff12, 0xfe05, 0xfe92, 0xfea1, 0xff1a, 0xfe0f, 0xff07, 0xfe56, 0xff16, 0xff02, 0xfed8, 0xfee8, 0xff1e, 0xfe1d, 0x003b, 0xffff, 0xff06, 0xffff, 0xfe71, 0xfe89, 0xffff, 0xffff, 0xfe2c, 0xfe2b, 0xfe20, 0xffff, 0xfebb, 0xfecf, 0xfe08, 0xffff, 0xfee0, 0xfe0d, 0xffff, 0xfe99, 0xffff, 0xfe04, 0xfeaa, 0xfe49, 0xffff, 0xfe17, 0xfe61, 0xfedf, 0xffff, 0xfeff, 0xfef6, 0xfe4c, 0xffff, 0xffff, 0xfe87, 0xffff, 0xff24, 0xffff, 0xfe3c, 0xfe72, 0xffff, 0xffff, 0xfece, 0xffff, 0xfefe, 0xffff, 0xfe23, 0xfebc, 0xfe0a, 0xfea9, 0xffff, 0xfe11, 0xffff, 0xfe82, 0xffff, 0xfe06, 0xfe9a, 0xfef5, 0xffff, 0xfe22, 0xfe4d, 0xfe5f, 0xffff, 0xff03, 0xfee1, 0xffff, 0xfeca, 0xfecc, 0xffff, 0xfe19, 0xffff, 0xfeb7, 0xffff, 0xffff, 0xfe83, 0xfe29, 0xffff, 0xffff, 0xffff, 0xfe6c, 0xffff, 0xfeed, 0xffff, 0xffff, 0xfe46, 0xfe5c, 0xfe15, 0xffff, 0xfedb, 0xfea6, 0xffff, 0xffff, 0xfe44, 0xffff, 0xfe0c, 0xffff, 0xfe95, 0xfefc, 0xffff, 0xffff, 0xfeb8, 0x16c9, 0xffff, 0xfef0, 0xffff, 0xfe38, 0xffff, 0xffff, 0xfe6d, 0xfe7e, 0xffff, 0xffff, 0xffff, 0xffff, 0xfe5b, 0xfedc, 0xffff, 0xffff, 0xfeec, 0xfe47, 0xfe1f, 0xffff, 0xfe7f, 0xfe96, 0xffff, 0xffff, 0xfea5, 0xffff, 0xfe10, 0xfe40, 0xfe32, 0xfebf, 0xffff, 0xffff, 0xfed4, 0xfef1, 0xffff, 0xffff, 0xffff, 0xfe75, 0xffff, 0xffff, 0xfe8d, 0xfe31, 0xffff, 0xfe65, 0xfe1b, 0xffff, 0xfee4, 0xfefb, 0xffff, 0xffff, 0xfe52, 0xffff, 0xfe0e, 0xffff, 0xfe9d, 0xfeaf, 0xffff, 0xffff, 0xfe51, 0xfed3, 0xffff, 0xff20, 0xffff, 0xfe2f, 0xffff, 0xffff, 0xfec1, 0xfe8c, 0xffff, 0xffff, 0xffff, 0xfe3f, 0xffff, 0xffff, 0xfe76, 0xffff, 0xfefa, 0xfe53, 0xfe25, 0xffff, 0xfe64, 0xfee5, 0xffff, 0xffff, 0xfeae, 0xffff, 0xfe13, 0xffff, 0xfe88, 0xfe9e, 0xffff, 0xfe43, 0xffff, 0xffff, 0xfea4, 0xfe93, 0xffff, 0xffff, 0xffff, 0xfe3d, 0xffff, 0xffff, 0xfeeb, 0xfed9, 0xffff, 0xfe14, 0xfe5a, 0xffff, 0xfe28, 0xfe7d, 0xffff, 0xffff, 0xfe6a, 0xffff, 0xffff, 0xff01, 0xfec6, 0xfec8, 0xffff, 0xffff, 0xfeb5, 0xffff, 0xffff, 0xffff, 0xfe94, 0xfe78, 0xffff, 0xffff, 0xffff, 0xfea3, 0xffff, 0xffff, 0xfeda, 0xfe58, 0xffff, 0xfe1e, 0xfe45, 0xfeea, 0xffff, 0xfe6b, 0xffff, 0xffff, 0xfe37, 0xffff, 0xffff, 0xffff, 0xfe7c, 0xfeb6, 0xffff, 0xffff, 0xfef8, 0xffff, 0xffff, 0xffff, 0xfec7, 0xfe9b, 0xffff, 0xffff, 0xffff, 0xfe50, 0xffff, 0xffff, 0xfead, 0xfee2, 0xffff, 0xfe1a, 0xfe63, 0xfe4e, 0xffff, 0xffff, 0xfef9, 0xffff, 0xfe73, 0xffff, 0xffff, 0xffff, 0xfe30, 0xfe8b, 0xffff, 0xffff, 0xfebd, 0xfe2e, 0x0100, 0xffff, 0xfeee, 0xfed2, 0xffff, 0xffff, 0xffff, 0xfeac, 0xffff, 0xffff, 0xfe9c, 0xfe84, 0xffff, 0xfe24, 0xfe4f, 0xfef7, 0xffff, 0xffff, 0xfee3, 0xfe62, 0xffff, 0xffff, 0xffff, 0xffff, 0xfe8a, 0xfe74, 0xffff, 0xffff, 0xfe3e, 0xffff, 0xffff, 0xffff, 0xfed1, 0xfebe, 0xffff, 0xffff, 0xfe2d, 0xffff, 0xfe4a, 0xfef3, 0xffff, 0xffff, 0xfedd, 0xfe5e, 0xfe16, 0xffff, 0xfe48, 0xfea8, 0xffff, 0xfeab, 0xfe97, 0xffff, 0xffff, 0xfed0, 0xffff, 0xffff, 0xfecd, 0xfeb9, 0xffff, 0xffff, 0xffff, 0xfe2a, 0xffff, 0xffff, 0xfe86, 0xfe6e, 0xffff, 0xffff, 0xffff, 0xfede, 0xffff, 0xffff, 0xfe5d, 0xfe4b, 0xfe21, 0xffff, 0xfeef, 0xfe98, 0xffff, 0xffff, 0xfe81, 0xffff, 0xffff, 0xffff, 0xfea7, 0xffff, 0xfeba, 0xfefd, 0xffff, 0xffff, 0xffff, 0xfecb, 0xffff, 0xffff, 0xfe6f, 0xfe39, 0xffff, 0xffff, 0xffff, 0xfe85, 0xffff, 0x010c, 0xfee6, 0xfe67, 0xfe1c, 0xffff, 0xfe54, 0xfeb2, 0xffff, 0xffff, 0xfe9f, 0xffff, 0xffff, 0xffff, 0xfe59, 0xfeb1, 0xffff, 0xfec2, 0xffff, 0xffff, 0xfe36, 0xfef2, 0xffff, 0xffff, 0xfed6, 0xfe77, 0xffff, 0xffff, 0xffff, 0xfe33, 0xffff, 0xffff, 0xfe8f, 0xfe55, 0xfe26, 0x010a, 0xff04, 0xfee7, 0xffff, 0x0121, 0xfe66, 0xffff, 0xffff, 0xffff, 0xfeb0, 0xfea0, 0xffff, 0x010f, 0xfe90, 0xffff, 0xffff, 0xfed5, 0xffff, 0xffff, 0xfec3, 0xfe34, 0xffff, 0xffff, 0xffff, 0xfe8e, 0xffff, 0x0111, 0xfe79, 0xfe41, 0x010b };
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static uint16 LECHTab[] = {511, 0, 508, 448, 494, 347, 486, 482};
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static uint8 HuffLenLOM[] = {
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0x4, 0x2, 0x3, 0x4, 0x3, 0x4, 0x4, 0x5, 0x4, 0x5, 0x5, 0x6, 0x6, 0x7, 0x7, 0x8, 0x7, 0x8, 0x8, 0x9, 0x9, 0x8, 0x9, 0x9, 0x9, 0x9, 0x9, 0x9, 0x9, 0x9, 0x9, 0x9 };
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static uint16 HuffIndexLOM[] = {
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0xfe1, 0xfe0, 0xfe2, 0xfe8, 0xe, 0xfe5, 0xfe4, 0xfea, 0xff1, 0xfe3, 0x15, 0xfe7, 0xfef, 0x46, 0xff0, 0xfed, 0xfff, 0xff7, 0xffb, 0x19, 0xffd, 0xff4, 0x12c, 0xfeb, 0xffe, 0xff6, 0xffa, 0x89, 0xffc, 0xff3, 0xff8, 0xff2 };
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static uint8 LOMHTab[] = {0, 4, 10, 19};
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static uint8 CopyOffsetBitsLUT[] = {
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0, 0, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 13, 14, 14, 15 };
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static uint32 CopyOffsetBaseLUT[] = {
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13, 17, 25, 33, 49, 65, 97, 129, 193, 257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145, 8193, 12289, 16385, 24577, 32769, 49153, 65537 };
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static uint8 LoMBitsLUT[] = {
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0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 6, 6, 8, 8, 14, 14 };
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static uint16 LoMBaseLUT[] = {
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2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 16, 18, 22, 26, 30, 34, 42, 50, 58, 66, 82, 98, 114, 130, 194, 258, 514, 2, 2 };
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uint16 LEChash(uint16 key)
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{
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return ((key & 0x1ff) ^ (key >> 9) ^ (key >> 4) ^ (key >> 7));
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}
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uint16 LOMhash(uint16 key)
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{
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return ((key & 0x1f) ^ (key >> 5) ^ (key >> 9));
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}
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uint16 miniLEChash(uint16 key)
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{
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uint16 h;
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h = ((((key >> 8) ^ (key & 0xff)) >> 2) & 0xf);
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if(key >> 9)
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h = ~h;
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return (h % 12);
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}
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uint8 miniLOMhash(uint16 key)
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{
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return ((key >> 4) ^ (key >> 6) ^ (key >> 7));
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}
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uint16 getLECindex(uint16 huff)
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{
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uint16 h = HuffIndexLEC[LEChash(huff)];
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if((h ^ huff) >> 9)
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return h & 0x1ff;
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else
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return HuffIndexLEC[LECHTab[miniLEChash(huff)]];
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}
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uint16 getLOMindex(uint16 huff)
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{
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uint16 h = HuffIndexLOM[LOMhash(huff)];
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if((h ^ huff) >> 5)
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{
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return h & 0x1f;
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}
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else
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return HuffIndexLOM[LOMHTab[miniLOMhash(huff)]];
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}
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int decompress_rdp(rdpRdp* rdp, uint8* cbuf, int len, int ctype, uint32* roff, uint32* rlen)
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{
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int type = ctype & 0x0f;
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@ -57,20 +129,20 @@ int decompress_rdp(rdpRdp* rdp, uint8* cbuf, int len, int ctype, uint32* roff, u
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* @param roff starting offset of uncompressed data
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* @param rlen length of uncompressed data
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*
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* @return true on success, false on failure
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* @return True on success, False on failure
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*/
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int decompress_rdp_4(rdpRdp* rdp, uint8* cbuf, int len, int ctype, uint32* roff, uint32* rlen)
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{
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uint8* history_buf; /* uncompressed data goes here */
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uint8* history_ptr; /* points to next free slot in bistory_buf */
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uint8* history_ptr; /* points to next free slot in history_buf */
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uint32 d32; /* we process 4 compressed bytes at a time */
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uint16 copy_offset; /* location to copy data from */
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uint16 lom; /* length of match */
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uint8* src_ptr; /* used while copying compressed data */
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uint8* cptr; /* points to next byte in cbuf */
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uint8 cur_byte; /* last byte fetched from cbuf */
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int bits_left; /* bits left in d32 for processing */
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int bits_left; /* bits left in d34 for processing */
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int cur_bits_left; /* bits left in cur_byte for processing */
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int tmp;
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uint32 i32;
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@ -112,7 +184,7 @@ int decompress_rdp_4(rdpRdp* rdp, uint8* cbuf, int len, int ctype, uint32* roff,
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{
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/* re-init history buffer */
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history_ptr = rdp->mppc->history_buf;
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memset(history_buf, 0, RDP5_HISTORY_BUF_SIZE);
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memset(history_buf, 0, RDP6_HISTORY_BUF_SIZE);
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*roff = 0;
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}
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@ -487,7 +559,7 @@ int decompress_rdp_4(rdpRdp* rdp, uint8* cbuf, int len, int ctype, uint32* roff,
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* @param roff starting offset of uncompressed data
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* @param rlen length of uncompressed data
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*
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* @return true on success, false on failure
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* @return True on success, False on failure
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*/
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int decompress_rdp_5(rdpRdp* rdp, uint8* cbuf, int len, int ctype, uint32* roff, uint32* rlen)
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@ -540,7 +612,7 @@ int decompress_rdp_5(rdpRdp* rdp, uint8* cbuf, int len, int ctype, uint32* roff,
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{
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/* re-init history buffer */
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history_ptr = rdp->mppc->history_buf;
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memset(history_buf, 0, RDP5_HISTORY_BUF_SIZE);
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memset(history_buf, 0, RDP6_HISTORY_BUF_SIZE);
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*roff = 0;
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}
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@ -951,14 +1023,112 @@ int decompress_rdp_5(rdpRdp* rdp, uint8* cbuf, int len, int ctype, uint32* roff,
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* @param roff starting offset of uncompressed data
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* @param rlen length of uncompressed data
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*
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* @return true on success, false on failure
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* @return True on success, False on failure
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*/
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int decompress_rdp_6(rdpRdp* rdp, uint8* cbuf, int len, int ctype, uint32* roff, uint32* rlen)
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{
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uint8* history_buf; /* uncompressed data goes here */
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uint16* offset_cache; /* Copy Offset cache */
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uint8* history_ptr; /* points to next free slot in bistory_buf */
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uint32 d32; /* we process 4 compressed bytes at a time */
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uint16 copy_offset; /* location to copy data from */
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uint16 lom; /* length of match */
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uint8* src_ptr; /* used while copying compressed data */
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uint8* cptr; /* points to next byte in cbuf */
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uint8 cur_byte; /* last byte fetched from cbuf */
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int bits_left; /* bits left in d32 for processing */
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int cur_bits_left; /* bits left in cur_byte for processing */
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int tmp;
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uint32 i32;
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if ((rdp->mppc == NULL) || (rdp->mppc->history_buf == NULL))
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{
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printf("decompress_rdp_6: null\n");
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return false;
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}
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src_ptr = 0;
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cptr = cbuf;
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copy_offset = 0;
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lom = 0;
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bits_left = 0;
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cur_bits_left = 0;
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d32 = 0;
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cur_byte = 0;
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*rlen = 0;
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/* get start of history buffer */
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history_buf = rdp->mppc->history_buf;
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/* get start of offset_cache */
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offset_cache = rdp->mppc->offset_cache;
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/* get next free slot in history buffer */
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history_ptr = rdp->mppc->history_ptr;
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*roff = history_ptr - history_buf;
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if (ctype & PACKET_AT_FRONT)
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{
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printf("need to look later\n");
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/* slid history_buf and reset history_buf to middle */
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memcpy(history_buf, (history_buf + 32768), (history_ptr -history_buf - 32768));
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memcpy((history_buf + (history_ptr - history_buf - 32768)), cbuf, len);
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history_ptr = history_buf + 32768;
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*roff = 32768;
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}
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if (ctype & PACKET_FLUSHED)
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{
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/* re-init history buffer */
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history_ptr = rdp->mppc->history_buf;
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memset(history_buf, 0, RDP6_HISTORY_BUF_SIZE);
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memset(offset_cache, 0, RDP6_OFFSET_CACHE_SIZE);
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*roff = 0;
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}
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if ((ctype & PACKET_COMPRESSED) != PACKET_COMPRESSED)
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{
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/* data in cbuf is not compressed - copy to history buf as is */
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memcpy(history_ptr, cbuf, len);
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history_ptr += len;
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*rlen = history_ptr - rdp->mppc->history_ptr;
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rdp->mppc->history_ptr = history_ptr;
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return true;
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}
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/* load initial data */
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tmp = 24;
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while (cptr < cbuf + len)
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{
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i32 = *cptr++;
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d32 |= i32 << tmp;
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bits_left += 8;
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tmp -= 8;
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if (tmp < 0)
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{
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break;
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}
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}
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if (cptr < cbuf + len)
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{
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cur_byte = *cptr++;
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cur_bits_left = 8;
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}
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else
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{
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cur_bits_left = 0;
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}
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/*
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** start uncompressing data in cbuf
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*/
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return true;
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}
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/**
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* decompress RDP 6.1 data
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*
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@ -969,7 +1139,7 @@ int decompress_rdp_6(rdpRdp* rdp, uint8* cbuf, int len, int ctype, uint32* roff,
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* @param roff starting offset of uncompressed data
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* @param rlen length of uncompressed data
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*
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* @return true on success, false on failure
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* @return True on success, False on failure
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*/
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int decompress_rdp_61(rdpRdp* rdp, uint8* cbuf, int len, int ctype, uint32* roff, uint32* rlen)
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@ -995,7 +1165,8 @@ struct rdp_mppc* mppc_new(rdpRdp* rdp)
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return NULL;
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||||
}
|
||||
|
||||
ptr->history_buf = (uint8 *) xmalloc(RDP5_HISTORY_BUF_SIZE);
|
||||
ptr->history_buf = (uint8 *) xmalloc(RDP6_HISTORY_BUF_SIZE);
|
||||
ptr->offset_cache = (uint16 *) xzalloc(RDP6_OFFSET_CACHE_SIZE);
|
||||
if (!ptr->history_buf)
|
||||
{
|
||||
printf("mppc_new(): system out of memory\n");
|
||||
@ -1004,7 +1175,7 @@ struct rdp_mppc* mppc_new(rdpRdp* rdp)
|
||||
}
|
||||
|
||||
ptr->history_ptr = ptr->history_buf;
|
||||
ptr->history_buf_end = ptr->history_buf + RDP5_HISTORY_BUF_SIZE - 1;
|
||||
ptr->history_buf_end = ptr->history_buf + RDP6_HISTORY_BUF_SIZE - 1;
|
||||
return ptr;
|
||||
}
|
||||
|
||||
|
||||
@ -22,11 +22,13 @@
|
||||
|
||||
#include <stdint.h>
|
||||
|
||||
#define RDP5_HISTORY_BUF_SIZE 65536
|
||||
#define RDP6_HISTORY_BUF_SIZE 65536
|
||||
#define RDP6_OFFSET_CACHE_SIZE 4
|
||||
|
||||
struct rdp_mppc
|
||||
{
|
||||
uint8 *history_buf;
|
||||
uint16 *offset_cache;
|
||||
uint8 *history_buf_end;
|
||||
uint8 *history_ptr;
|
||||
};
|
||||
|
||||
Loading…
Reference in New Issue
Block a user