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php5  5.3.10
Defines | Functions
md5.c File Reference
#include "php.h"
#include "md5.h"
#include <string.h>

Go to the source code of this file.

Defines

#define F(x, y, z)   ((z) ^ ((x) & ((y) ^ (z))))
#define G(x, y, z)   ((y) ^ ((z) & ((x) ^ (y))))
#define H(x, y, z)   ((x) ^ (y) ^ (z))
#define I(x, y, z)   ((y) ^ ((x) | ~(z)))
#define STEP(f, a, b, c, d, x, t, s)
#define SET(n)
#define GET(n)   (ctx->block[(n)])

Functions

PHPAPI void make_digest (char *md5str, const unsigned char *digest)
PHPAPI void make_digest_ex (char *md5str, const unsigned char *digest, int len)
 PHP_NAMED_FUNCTION (php_if_md5)
 PHP_NAMED_FUNCTION (php_if_md5_file)
static const void * body (PHP_MD5_CTX *ctx, const void *data, size_t size)
PHPAPI void PHP_MD5Init (PHP_MD5_CTX *ctx)
PHPAPI void PHP_MD5Update (PHP_MD5_CTX *ctx, const void *data, size_t size)
PHPAPI void PHP_MD5Final (unsigned char *result, PHP_MD5_CTX *ctx)

Define Documentation

#define F (   x,
  y,
 
)    ((z) ^ ((x) & ((y) ^ (z))))

Definition at line 146 of file md5.c.

#define G (   x,
  y,
 
)    ((y) ^ ((z) & ((x) ^ (y))))

Definition at line 147 of file md5.c.

#define GET (   n)    (ctx->block[(n)])

Definition at line 179 of file md5.c.

#define H (   x,
  y,
 
)    ((x) ^ (y) ^ (z))

Definition at line 148 of file md5.c.

#define I (   x,
  y,
 
)    ((y) ^ ((x) | ~(z)))

Definition at line 149 of file md5.c.

#define SET (   n)
Value:
(ctx->block[(n)] = \
       (php_uint32)ptr[(n) * 4] | \
       ((php_uint32)ptr[(n) * 4 + 1] << 8) | \
       ((php_uint32)ptr[(n) * 4 + 2] << 16) | \
       ((php_uint32)ptr[(n) * 4 + 3] << 24))

Definition at line 173 of file md5.c.

#define STEP (   f,
  a,
  b,
  c,
  d,
  x,
  t,
 
)
Value:
(a) += f((b), (c), (d)) + (x) + (t); \
       (a) = (((a) << (s)) | (((a) & 0xffffffff) >> (32 - (s)))); \
       (a) += (b);

Definition at line 154 of file md5.c.


Function Documentation

static const void* body ( PHP_MD5_CTX ctx,
const void *  data,
size_t  size 
) [static]

Definition at line 187 of file md5.c.

{
       const unsigned char *ptr;
       php_uint32 a, b, c, d;
       php_uint32 saved_a, saved_b, saved_c, saved_d;

       ptr = data;

       a = ctx->a;
       b = ctx->b;
       c = ctx->c;
       d = ctx->d;

       do {
              saved_a = a;
              saved_b = b;
              saved_c = c;
              saved_d = d;

/* Round 1 */
              STEP(F, a, b, c, d, SET(0), 0xd76aa478, 7)
              STEP(F, d, a, b, c, SET(1), 0xe8c7b756, 12)
              STEP(F, c, d, a, b, SET(2), 0x242070db, 17)
              STEP(F, b, c, d, a, SET(3), 0xc1bdceee, 22)
              STEP(F, a, b, c, d, SET(4), 0xf57c0faf, 7)
              STEP(F, d, a, b, c, SET(5), 0x4787c62a, 12)
              STEP(F, c, d, a, b, SET(6), 0xa8304613, 17)
              STEP(F, b, c, d, a, SET(7), 0xfd469501, 22)
              STEP(F, a, b, c, d, SET(8), 0x698098d8, 7)
              STEP(F, d, a, b, c, SET(9), 0x8b44f7af, 12)
              STEP(F, c, d, a, b, SET(10), 0xffff5bb1, 17)
              STEP(F, b, c, d, a, SET(11), 0x895cd7be, 22)
              STEP(F, a, b, c, d, SET(12), 0x6b901122, 7)
              STEP(F, d, a, b, c, SET(13), 0xfd987193, 12)
              STEP(F, c, d, a, b, SET(14), 0xa679438e, 17)
              STEP(F, b, c, d, a, SET(15), 0x49b40821, 22)

/* Round 2 */
              STEP(G, a, b, c, d, GET(1), 0xf61e2562, 5)
              STEP(G, d, a, b, c, GET(6), 0xc040b340, 9)
              STEP(G, c, d, a, b, GET(11), 0x265e5a51, 14)
              STEP(G, b, c, d, a, GET(0), 0xe9b6c7aa, 20)
              STEP(G, a, b, c, d, GET(5), 0xd62f105d, 5)
              STEP(G, d, a, b, c, GET(10), 0x02441453, 9)
              STEP(G, c, d, a, b, GET(15), 0xd8a1e681, 14)
              STEP(G, b, c, d, a, GET(4), 0xe7d3fbc8, 20)
              STEP(G, a, b, c, d, GET(9), 0x21e1cde6, 5)
              STEP(G, d, a, b, c, GET(14), 0xc33707d6, 9)
              STEP(G, c, d, a, b, GET(3), 0xf4d50d87, 14)
              STEP(G, b, c, d, a, GET(8), 0x455a14ed, 20)
              STEP(G, a, b, c, d, GET(13), 0xa9e3e905, 5)
              STEP(G, d, a, b, c, GET(2), 0xfcefa3f8, 9)
              STEP(G, c, d, a, b, GET(7), 0x676f02d9, 14)
              STEP(G, b, c, d, a, GET(12), 0x8d2a4c8a, 20)

/* Round 3 */
              STEP(H, a, b, c, d, GET(5), 0xfffa3942, 4)
              STEP(H, d, a, b, c, GET(8), 0x8771f681, 11)
              STEP(H, c, d, a, b, GET(11), 0x6d9d6122, 16)
              STEP(H, b, c, d, a, GET(14), 0xfde5380c, 23)
              STEP(H, a, b, c, d, GET(1), 0xa4beea44, 4)
              STEP(H, d, a, b, c, GET(4), 0x4bdecfa9, 11)
              STEP(H, c, d, a, b, GET(7), 0xf6bb4b60, 16)
              STEP(H, b, c, d, a, GET(10), 0xbebfbc70, 23)
              STEP(H, a, b, c, d, GET(13), 0x289b7ec6, 4)
              STEP(H, d, a, b, c, GET(0), 0xeaa127fa, 11)
              STEP(H, c, d, a, b, GET(3), 0xd4ef3085, 16)
              STEP(H, b, c, d, a, GET(6), 0x04881d05, 23)
              STEP(H, a, b, c, d, GET(9), 0xd9d4d039, 4)
              STEP(H, d, a, b, c, GET(12), 0xe6db99e5, 11)
              STEP(H, c, d, a, b, GET(15), 0x1fa27cf8, 16)
              STEP(H, b, c, d, a, GET(2), 0xc4ac5665, 23)

/* Round 4 */
              STEP(I, a, b, c, d, GET(0), 0xf4292244, 6)
              STEP(I, d, a, b, c, GET(7), 0x432aff97, 10)
              STEP(I, c, d, a, b, GET(14), 0xab9423a7, 15)
              STEP(I, b, c, d, a, GET(5), 0xfc93a039, 21)
              STEP(I, a, b, c, d, GET(12), 0x655b59c3, 6)
              STEP(I, d, a, b, c, GET(3), 0x8f0ccc92, 10)
              STEP(I, c, d, a, b, GET(10), 0xffeff47d, 15)
              STEP(I, b, c, d, a, GET(1), 0x85845dd1, 21)
              STEP(I, a, b, c, d, GET(8), 0x6fa87e4f, 6)
              STEP(I, d, a, b, c, GET(15), 0xfe2ce6e0, 10)
              STEP(I, c, d, a, b, GET(6), 0xa3014314, 15)
              STEP(I, b, c, d, a, GET(13), 0x4e0811a1, 21)
              STEP(I, a, b, c, d, GET(4), 0xf7537e82, 6)
              STEP(I, d, a, b, c, GET(11), 0xbd3af235, 10)
              STEP(I, c, d, a, b, GET(2), 0x2ad7d2bb, 15)
              STEP(I, b, c, d, a, GET(9), 0xeb86d391, 21)

              a += saved_a;
              b += saved_b;
              c += saved_c;
              d += saved_d;

              ptr += 64;
       } while (size -= 64);

       ctx->a = a;
       ctx->b = b;
       ctx->c = c;
       ctx->d = d;

       return ptr;
}

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PHPAPI void make_digest ( char *  md5str,
const unsigned char *  digest 
)

Definition at line 26 of file md5.c.

{
       make_digest_ex(md5str, digest, 16);
}

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PHPAPI void make_digest_ex ( char *  md5str,
const unsigned char *  digest,
int  len 
)

Definition at line 32 of file md5.c.

{
       static const char hexits[17] = "0123456789abcdef";
       int i;

       for (i = 0; i < len; i++) {
              md5str[i * 2]       = hexits[digest[i] >> 4];
              md5str[(i * 2) + 1] = hexits[digest[i] &  0x0F];
       }
       md5str[len * 2] = '\0';
}

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PHPAPI void PHP_MD5Final ( unsigned char *  result,
PHP_MD5_CTX ctx 
)

Definition at line 340 of file md5.c.

{
       php_uint32 used, free;

       used = ctx->lo & 0x3f;

       ctx->buffer[used++] = 0x80;

       free = 64 - used;

       if (free < 8) {
              memset(&ctx->buffer[used], 0, free);
              body(ctx, ctx->buffer, 64);
              used = 0;
              free = 64;
       }

       memset(&ctx->buffer[used], 0, free - 8);

       ctx->lo <<= 3;
       ctx->buffer[56] = ctx->lo;
       ctx->buffer[57] = ctx->lo >> 8;
       ctx->buffer[58] = ctx->lo >> 16;
       ctx->buffer[59] = ctx->lo >> 24;
       ctx->buffer[60] = ctx->hi;
       ctx->buffer[61] = ctx->hi >> 8;
       ctx->buffer[62] = ctx->hi >> 16;
       ctx->buffer[63] = ctx->hi >> 24;

       body(ctx, ctx->buffer, 64);

       result[0] = ctx->a;
       result[1] = ctx->a >> 8;
       result[2] = ctx->a >> 16;
       result[3] = ctx->a >> 24;
       result[4] = ctx->b;
       result[5] = ctx->b >> 8;
       result[6] = ctx->b >> 16;
       result[7] = ctx->b >> 24;
       result[8] = ctx->c;
       result[9] = ctx->c >> 8;
       result[10] = ctx->c >> 16;
       result[11] = ctx->c >> 24;
       result[12] = ctx->d;
       result[13] = ctx->d >> 8;
       result[14] = ctx->d >> 16;
       result[15] = ctx->d >> 24;

       memset(ctx, 0, sizeof(*ctx));
}

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PHPAPI void PHP_MD5Init ( PHP_MD5_CTX ctx)

Definition at line 294 of file md5.c.

{
       ctx->a = 0x67452301;
       ctx->b = 0xefcdab89;
       ctx->c = 0x98badcfe;
       ctx->d = 0x10325476;

       ctx->lo = 0;
       ctx->hi = 0;
}

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PHPAPI void PHP_MD5Update ( PHP_MD5_CTX ctx,
const void *  data,
size_t  size 
)

Definition at line 305 of file md5.c.

{
       php_uint32 saved_lo;
       php_uint32 used, free;

       saved_lo = ctx->lo;
       if ((ctx->lo = (saved_lo + size) & 0x1fffffff) < saved_lo) {
              ctx->hi++;
       }
       ctx->hi += size >> 29;

       used = saved_lo & 0x3f;

       if (used) {
              free = 64 - used;

              if (size < free) {
                     memcpy(&ctx->buffer[used], data, size);
                     return;
              }

              memcpy(&ctx->buffer[used], data, free);
              data = (unsigned char *)data + free;
              size -= free;
              body(ctx, ctx->buffer, 64);
       }

       if (size >= 64) {
              data = body(ctx, data, size & ~(size_t)0x3f);
              size &= 0x3f;
       }

       memcpy(ctx->buffer, data, size);
}

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PHP_NAMED_FUNCTION ( php_if_md5  )

Definition at line 47 of file md5.c.

{
       char *arg;
       int arg_len;
       zend_bool raw_output = 0;
       char md5str[33];
       PHP_MD5_CTX context;
       unsigned char digest[16];
       
       if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s|b", &arg, &arg_len, &raw_output) == FAILURE) {
              return;
       }
       
       md5str[0] = '\0';
       PHP_MD5Init(&context);
       PHP_MD5Update(&context, arg, arg_len);
       PHP_MD5Final(digest, &context);
       if (raw_output) {
              RETURN_STRINGL(digest, 16, 1);
       } else {
              make_digest_ex(md5str, digest, 16);
              RETVAL_STRING(md5str, 1);
       }

}

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PHP_NAMED_FUNCTION ( php_if_md5_file  )

Definition at line 76 of file md5.c.

{
       char          *arg;
       int           arg_len;
       zend_bool raw_output = 0;
       char          md5str[33];
       unsigned char buf[1024];
       unsigned char digest[16];
       PHP_MD5_CTX   context;
       int           n;
       php_stream    *stream;

       if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s|b", &arg, &arg_len, &raw_output) == FAILURE) {
              return;
       }
       
       stream = php_stream_open_wrapper(arg, "rb", REPORT_ERRORS | ENFORCE_SAFE_MODE, NULL);
       if (!stream) {
              RETURN_FALSE;
       }

       PHP_MD5Init(&context);

       while ((n = php_stream_read(stream, buf, sizeof(buf))) > 0) {
              PHP_MD5Update(&context, buf, n);
       }

       PHP_MD5Final(digest, &context);

       php_stream_close(stream);

       if (n<0) {
              RETURN_FALSE;
       }

       if (raw_output) {
              RETURN_STRINGL(digest, 16, 1);
       } else {
              make_digest_ex(md5str, digest, 16);
              RETVAL_STRING(md5str, 1);
       }
}

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