2023年12月30日发(作者：)

#include "7zVersion.h"#include "7zAlloc.h"#include "7zExtract.h"#include "7zIn.h"int MY_CDECL extract7z(const char* srcFile, const char* dstPath){CFileInStream archiveStream;CLookToRead lookStream;CSzArEx db;SRes res;ISzAlloc allocImp;ISzAlloc allocTempImp;char outPath[1024] = { 0 };LOGD("7z ANSI-C Decoder " MY_VERSION_COPYRIGHT_DATE "n");if (InFile_Open(&, srcFile)) {//open 7z fileLOGE("can not open input filen");return 1;}FileInStream_CreateVTable(&archiveStream);LookToRead_CreateVTable(&lookStream, False);ream = &archiveStream.s;LookToRead_Init(&lookStream); = SzAlloc; = SzFree; = SzAllocTemp; = SzFreeTemp;CrcGenerateTable();SzArEx_Init(&db);res = SzArEx_Open(&db, &lookStream.s, &allocImp, &allocTempImp);if(res == SZ_OK){Int32 i;UInt32 blockIndex = 0xFFFFFFFF; /* it can have any value before first call (if outBuffer = 0) */Byte *outBuffer = 0; /* it must be 0 before first call for each new archive. */

size_t outBufferSize = 0; /* it can have any value before first call (if outBuffer = 0) */LOGD("Total file/directory count[%d]n", es);for (i = es - 1; i >= 0; i--) {size_t offset;size_t outSizeProcessed;CSzFileItem *f = + i;strcpy(outPath, dstPath);strcat(outPath, "/");strcat(outPath, f->Name);if (f->IsDir) { //dirLOGD("dir [%s]n", outPath);mkdir(outPath);continue;}else{ //fileLOGD("file [%s]n", outPath);res = SzAr_Extract(&db, &lookStream.s, i, &blockIndex,&outBuffer, &outBufferSize, &offset, &outSizeProcessed,&allocImp, &allocTempImp);if (res != SZ_OK){break;}else{CSzFile outFile;size_t processedSize;if (OutFile_Open(&outFile, outPath)) {LOGE("can not open output filen");res = SZ_ERROR_FAIL;break;}processedSize = outSizeProcessed;if (File_Write(&outFile, outBuffer + offset, &processedSize)!= 0 || processedSize != outSizeProcessed) {LOGE("can not write output filen");res = SZ_ERROR_FAIL;break;

}if (File_Close(&outFile)) {LOGE("can not close output filen");res = SZ_ERROR_FAIL;break;}}}}IAlloc_Free(&allocImp, outBuffer);}SzArEx_Free(&db, &allocImp);File_Close(&);if (res == SZ_OK){LOGD("Everything is Okn");return 0;}if (res == SZ_ERROR_UNSUPPORTED)LOGE("decoder doesn't support this archiven");else if (res == SZ_ERROR_MEM)LOGE("can not allocate memoryn");else if (res == SZ_ERROR_CRC)LOGE("CRC errorn");elseLOGE("ERROR #%dn", res);return 1;}int main(int numargs, char *args[]){return extract7z(args[1], args[2]);

do {t = (uint32) ((unsigned) buf[3] << 8 | buf[2]) << 16 |((unsigned) buf[1] << 8 | buf[0]);*(uint32 *) buf = t;buf += 4;}while (--longs);}#endif#endifstatic void putu32(uint32 data, unsigned char *addr) {addr[0] = (unsigned char) data;addr[1] = (unsigned char) (data >> 8);addr[2] = (unsigned char) (data >> 16);addr[3] = (unsigned char) (data >> 24);}/** Start MD5 accumulation. Set bit count to 0 and buffer to mysterious* initialization constants.*/void MD5Init(struct MD5Context *ctx) {ctx->buf[0] = 0x67452301;ctx->buf[1] = 0xefcdab89;ctx->buf[2] = 0x98badcfe;ctx->buf[3] = 0x10325476;ctx->bits[0] = 0;ctx->bits[1] = 0;}/** Update context to reflect the concatenation of another buffer full* of bytes.*/void MD5Update(struct MD5Context *ctx, unsigned char const *buf, unsigned len) {uint32 t;/* Update bitcount */

t = ctx->bits[0];if ((ctx->bits[0] = t + ((uint32) len << 3)) < t)ctx->bits[1]++; /* Carry from low to high */ctx->bits[1] += len >> 29;t = (t >> 3) & 0x3f; /* Bytes already in shsInfo->data *//* Handle any leading odd-sized chunks */if (t) {unsigned char *p = (unsigned char *) ctx->in + t;t = 64 - t;if (len < t) {memcpy(p, buf, len);return;}memcpy(p, buf, t);byteReverse(ctx->in, 16);MD5Transform(ctx->buf, (uint32 *) ctx->in);buf += t;len -= t;}/* Process data in 64-byte chunks */while (len >= 64) {memcpy(ctx->in, buf, 64);byteReverse(ctx->in, 16);MD5Transform(ctx->buf, (uint32 *) ctx->in);buf += 64;len -= 64;}/* Handle any remaining bytes of data. */memcpy(ctx->in, buf, len);}/** Final wrapup - pad to 64-byte boundary with the bit pattern* 1 0* (64-bit count of bits processed, MSB-first)*/

void MD5Final(unsigned char digest[16], struct MD5Context *ctx) {unsigned count;unsigned char *p;/* Compute number of bytes mod 64 */count = (ctx->bits[0] >> 3) & 0x3F;/* Set the first char of padding to 0x80. This is safe since there isalways at least one byte free */p = ctx->in + count;*p++ = 0x80;/* Bytes of padding needed to make 64 bytes */count = 64 - 1 - count;/* Pad out to 56 mod 64 */if (count < 8) {/* Two lots of padding: Pad the first block to 64 bytes */memset(p, 0, count);byteReverse(ctx->in, 16);MD5Transform(ctx->buf, (uint32 *) ctx->in);/* Now fill the next block with 56 bytes */memset(ctx->in, 0, 56);} else {/* Pad block to 56 bytes */memset(p, 0, count - 8);} byteReverse(ctx->in, 14);/* Append length in bits and transform *///((uint32 *) ctx->in)[14] = ctx->bits[0];//((uint32 *) ctx->in)[15] = ctx->bits[1];putu32(ctx->bits[0], ctx->in + 56);putu32(ctx->bits[1], ctx->in + 60);MD5Transform(ctx->buf, (uint32 *) ctx->in);byteReverse((unsigned char *) ctx->buf, 4);memcpy(digest, ctx->buf, 16);memset(ctx, 0, sizeof(*ctx)); /* In case it's sensitive */}#ifndef ASM_MD5

/* The four core functions - F1 is optimized somewhat *//* #define F1(x, y, z) (x & y | ~x & z) */#define F1(x, y, z) (z ^ (x & (y ^ z)))#define F2(x, y, z) F1(z, x, y)#define F3(x, y, z) (x ^ y ^ z)#define F4(x, y, z) (y ^ (x | ~z))/* This is the central step in the MD5 algorithm. */#define MD5STEP(f, w, x, y, z, data, s) ( w += f(x, y, z) + data, w = w<>(32-s), w += x )/** The core of the MD5 algorithm, this alters an existing MD5 hash to* reflect the addition of 16 longwords of new data. MD5Update blocks* the data and converts bytes into longwords for this routine.*/void MD5Transform(uint32 buf[4], uint32 const in[16]) {register uint32 a, b, c, d;a = buf[0];b = buf[1];c = buf[2];d = buf[3];MD5STEP(F1, a, b, c, d, in[0] + 0xd76aa478, 7);MD5STEP(F1, d, a, b, c, in[1] + 0xe8c7b756, 12);MD5STEP(F1, c, d, a, b, in[2] + 0x242070db, 17);MD5STEP(F1, b, c, d, a, in[3] + 0xc1bdceee, 22);MD5STEP(F1, a, b, c, d, in[4] + 0xf57c0faf, 7);MD5STEP(F1, d, a, b, c, in[5] + 0x4787c62a, 12);MD5STEP(F1, c, d, a, b, in[6] + 0xa8304613, 17);MD5STEP(F1, b, c, d, a, in[7] + 0xfd469501, 22);MD5STEP(F1, a, b, c, d, in[8] + 0x698098d8, 7);MD5STEP(F1, d, a, b, c, in[9] + 0x8b44f7af, 12);MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17);MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22);MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7);MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12);

MD5STEP(F1, c, d, a, b, in[14] + 0xa679438e, 17);MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821, 22);MD5STEP(F2, a, b, c, d, in[1] + 0xf61e2562, 5);MD5STEP(F2, d, a, b, c, in[6] + 0xc040b340, 9);MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51, 14);MD5STEP(F2, b, c, d, a, in[0] + 0xe9b6c7aa, 20);MD5STEP(F2, a, b, c, d, in[5] + 0xd62f105d, 5);MD5STEP(F2, d, a, b, c, in[10] + 0x02441453, 9);MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681, 14);MD5STEP(F2, b, c, d, a, in[4] + 0xe7d3fbc8, 20);MD5STEP(F2, a, b, c, d, in[9] + 0x21e1cde6, 5);MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6, 9);MD5STEP(F2, c, d, a, b, in[3] + 0xf4d50d87, 14);MD5STEP(F2, b, c, d, a, in[8] + 0x455a14ed, 20);MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905, 5);MD5STEP(F2, d, a, b, c, in[2] + 0xfcefa3f8, 9);MD5STEP(F2, c, d, a, b, in[7] + 0x676f02d9, 14);MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20);MD5STEP(F3, a, b, c, d, in[5] + 0xfffa3942, 4);MD5STEP(F3, d, a, b, c, in[8] + 0x8771f681, 11);MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122, 16);MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380c, 23);MD5STEP(F3, a, b, c, d, in[1] + 0xa4beea44, 4);MD5STEP(F3, d, a, b, c, in[4] + 0x4bdecfa9, 11);MD5STEP(F3, c, d, a, b, in[7] + 0xf6bb4b60, 16);MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70, 23);MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6, 4);MD5STEP(F3, d, a, b, c, in[0] + 0xeaa127fa, 11);MD5STEP(F3, c, d, a, b, in[3] + 0xd4ef3085, 16);MD5STEP(F3, b, c, d, a, in[6] + 0x04881d05, 23);MD5STEP(F3, a, b, c, d, in[9] + 0xd9d4d039, 4);MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5, 11);MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8, 16);MD5STEP(F3, b, c, d, a, in[2] + 0xc4ac5665, 23);

MD5STEP(F4, a, b, c, d, in[0] + 0xf4292244, 6);MD5STEP(F4, d, a, b, c, in[7] + 0x432aff97, 10);MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15);MD5STEP(F4, b, c, d, a, in[5] + 0xfc93a039, 21);MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6);MD5STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92, 10);MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15);MD5STEP(F4, b, c, d, a, in[1] + 0x85845dd1, 21);MD5STEP(F4, a, b, c, d, in[8] + 0x6fa87e4f, 6);MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10);MD5STEP(F4, c, d, a, b, in[6] + 0xa3014314, 15);MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21);MD5STEP(F4, a, b, c, d, in[4] + 0xf7537e82, 6);MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10);MD5STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15);MD5STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21);buf[0] += a;buf[1] += b;buf[2] += c;buf[3] += d;}/** get MD5 of a byte buffer*/int getBytesMD5(const unsigned char* src, unsigned int length, char* md5) {unsigned char i = 0;unsigned char md5Bytes[16] = { 0 };MD5_CTX context;if (src == NULL || md5 == NULL){return -1;}MD5Init(&context);MD5Update(&context, src, length);

MD5Final(md5Bytes, &context);for (i = 0; i < 16; i++) {sprintf(md5, "%02X", md5Bytes[i]);md5 += 2;}*md5 = '0';return 0;}/** get MD5 for a string*/int getStringMD5(const char* src, char* md5) {return getBytesMD5((unsigned char*) src, strlen((char*) src), md5);}/*** get MD5 of a file*/int getFileMD5(const char* path, char* md5) {FILE* fp = NULL;unsigned char buffer[MD5_FILE_BUFFER_LEN] = { 0 };int count = 0;MD5_CTX context;unsigned char md5Bytes[16] = { 0 };int i;if (path == NULL || md5 == NULL) {return -1;}fp = fopen(path, "rb");if (fp == NULL) {return -1;}MD5Init(&context);while ((count = fread(buffer, 1, MD5_FILE_BUFFER_LEN, fp)) > 0) {MD5Update(&context, buffer, count);