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-rw-r--r--gnu/usr.bin/perl/cpan/Digest-MD5/MD5.xs409
1 files changed, 390 insertions, 19 deletions
diff --git a/gnu/usr.bin/perl/cpan/Digest-MD5/MD5.xs b/gnu/usr.bin/perl/cpan/Digest-MD5/MD5.xs
index d8b156370f6..acefc30711e 100644
--- a/gnu/usr.bin/perl/cpan/Digest-MD5/MD5.xs
+++ b/gnu/usr.bin/perl/cpan/Digest-MD5/MD5.xs
@@ -39,8 +39,6 @@ extern "C" {
#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"
-#include <sys/types.h>
-#include <md5.h>
#ifdef __cplusplus
}
#endif
@@ -90,6 +88,61 @@ static MAGIC *THX_sv_magicext(pTHX_ SV *sv, SV *obj, int type,
# define SvPVbyte(sv, lp) (sv_utf8_downgrade((sv), 0), SvPV((sv), (lp)))
#endif
+/* Perl does not guarantee that U32 is exactly 32 bits. Some system
+ * has no integral type with exactly 32 bits. For instance, A Cray has
+ * short, int and long all at 64 bits so we need to apply this macro
+ * to reduce U32 values to 32 bits at appropriate places. If U32
+ * really does have 32 bits then this is a no-op.
+ */
+#if BYTEORDER > 0x4321 || defined(TRUNCATE_U32)
+ #define TO32(x) ((x) & 0xFFFFffff)
+ #define TRUNC32(x) ((x) &= 0xFFFFffff)
+#else
+ #define TO32(x) (x)
+ #define TRUNC32(x) /*nothing*/
+#endif
+
+/* The MD5 algorithm is defined in terms of little endian 32-bit
+ * values. The following macros (and functions) allow us to convert
+ * between native integers and such values.
+ */
+#undef BYTESWAP
+#ifndef U32_ALIGNMENT_REQUIRED
+ #if BYTEORDER == 0x1234 /* 32-bit little endian */
+ #define BYTESWAP(x) (x) /* no-op */
+
+ #elif BYTEORDER == 0x4321 /* 32-bit big endian */
+ #define BYTESWAP(x) ((((x)&0xFF)<<24) \
+ |(((x)>>24)&0xFF) \
+ |(((x)&0x0000FF00)<<8) \
+ |(((x)&0x00FF0000)>>8) )
+ #endif
+#endif
+
+#ifndef BYTESWAP
+static void u2s(U32 u, U8* s)
+{
+ *s++ = (U8)(u & 0xFF);
+ *s++ = (U8)((u >> 8) & 0xFF);
+ *s++ = (U8)((u >> 16) & 0xFF);
+ *s = (U8)((u >> 24) & 0xFF);
+}
+
+#define s2u(s,u) ((u) = (U32)(*s) | \
+ ((U32)(*(s+1)) << 8) | \
+ ((U32)(*(s+2)) << 16) | \
+ ((U32)(*(s+3)) << 24))
+#endif
+
+/* This structure keeps the current state of algorithm.
+ */
+typedef struct {
+ U32 A, B, C, D; /* current digest */
+ U32 bytes_low; /* counts bytes in message */
+ U32 bytes_high; /* turn it into a 64-bit counter */
+ U8 buffer[128]; /* collect complete 64 byte blocks */
+} MD5_CTX;
+
#if defined(USE_ITHREADS) && defined(MGf_DUP)
STATIC int dup_md5_ctx(pTHX_ MAGIC *mg, CLONE_PARAMS *params)
{
@@ -126,6 +179,325 @@ const STATIC struct {
};
#endif
+
+/* Padding is added at the end of the message in order to fill a
+ * complete 64 byte block (- 8 bytes for the message length). The
+ * padding is also the reason the buffer in MD5_CTX have to be
+ * 128 bytes.
+ */
+static const unsigned char PADDING[64] = {
+ 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
+};
+
+/* Constants for MD5Transform routine.
+ */
+#define S11 7
+#define S12 12
+#define S13 17
+#define S14 22
+#define S21 5
+#define S22 9
+#define S23 14
+#define S24 20
+#define S31 4
+#define S32 11
+#define S33 16
+#define S34 23
+#define S41 6
+#define S42 10
+#define S43 15
+#define S44 21
+
+/* F, G, H and I are basic MD5 functions.
+ */
+#define F(x, y, z) ((((x) & ((y) ^ (z))) ^ (z)))
+#define G(x, y, z) F(z, x, y)
+#define H(x, y, z) ((x) ^ (y) ^ (z))
+#define I(x, y, z) ((y) ^ ((x) | (~z)))
+
+/* ROTATE_LEFT rotates x left n bits.
+ */
+#define ROTATE_LEFT(x, n) (((x) << (n) | ((x) >> (32-(n)))))
+
+/* FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4.
+ * Rotation is separate from addition to prevent recomputation.
+ */
+#define FF(a, b, c, d, s, ac) \
+ (a) += F ((b), (c), (d)) + (NEXTx) + (U32)(ac); \
+ TRUNC32((a)); \
+ (a) = ROTATE_LEFT ((a), (s)); \
+ (a) += (b); \
+ TRUNC32((a));
+
+#define GG(a, b, c, d, x, s, ac) \
+ (a) += G ((b), (c), (d)) + X[x] + (U32)(ac); \
+ TRUNC32((a)); \
+ (a) = ROTATE_LEFT ((a), (s)); \
+ (a) += (b); \
+ TRUNC32((a));
+
+#define HH(a, b, c, d, x, s, ac) \
+ (a) += H ((b), (c), (d)) + X[x] + (U32)(ac); \
+ TRUNC32((a)); \
+ (a) = ROTATE_LEFT ((a), (s)); \
+ (a) += (b); \
+ TRUNC32((a));
+
+#define II(a, b, c, d, x, s, ac) \
+ (a) += I ((b), (c), (d)) + X[x] + (U32)(ac); \
+ TRUNC32((a)); \
+ (a) = ROTATE_LEFT ((a), (s)); \
+ (a) += (b); \
+ TRUNC32((a));
+
+
+static void
+MD5Init(MD5_CTX *ctx)
+{
+ /* Start state */
+ ctx->A = 0x67452301;
+ ctx->B = 0xefcdab89;
+ ctx->C = 0x98badcfe;
+ ctx->D = 0x10325476;
+
+ /* message length */
+ ctx->bytes_low = ctx->bytes_high = 0;
+}
+
+
+static void
+MD5Transform(MD5_CTX* ctx, const U8* buf, STRLEN blocks)
+{
+#ifdef MD5_DEBUG
+ static int tcount = 0;
+#endif
+
+ U32 A = ctx->A;
+ U32 B = ctx->B;
+ U32 C = ctx->C;
+ U32 D = ctx->D;
+
+#ifndef U32_ALIGNMENT_REQUIRED
+ const U32 *x = (U32*)buf; /* really just type casting */
+#endif
+
+ do {
+ U32 a = A;
+ U32 b = B;
+ U32 c = C;
+ U32 d = D;
+
+#if BYTEORDER == 0x1234 && !defined(U32_ALIGNMENT_REQUIRED)
+ const U32 *X = x;
+ #define NEXTx (*x++)
+#else
+ U32 X[16]; /* converted values, used in round 2-4 */
+ U32 *uptr = X;
+ U32 tmp;
+ #ifdef BYTESWAP
+ #define NEXTx (tmp=*x++, *uptr++ = BYTESWAP(tmp))
+ #else
+ #define NEXTx (s2u(buf,tmp), buf += 4, *uptr++ = tmp)
+ #endif
+#endif
+
+#ifdef MD5_DEBUG
+ if (buf == ctx->buffer)
+ fprintf(stderr,"%5d: Transform ctx->buffer", ++tcount);
+ else
+ fprintf(stderr,"%5d: Transform %p (%d)", ++tcount, buf, blocks);
+
+ {
+ int i;
+ fprintf(stderr,"[");
+ for (i = 0; i < 16; i++) {
+ fprintf(stderr,"%x,", x[i]);
+ }
+ fprintf(stderr,"]\n");
+ }
+#endif
+
+ /* Round 1 */
+ FF (a, b, c, d, S11, 0xd76aa478); /* 1 */
+ FF (d, a, b, c, S12, 0xe8c7b756); /* 2 */
+ FF (c, d, a, b, S13, 0x242070db); /* 3 */
+ FF (b, c, d, a, S14, 0xc1bdceee); /* 4 */
+ FF (a, b, c, d, S11, 0xf57c0faf); /* 5 */
+ FF (d, a, b, c, S12, 0x4787c62a); /* 6 */
+ FF (c, d, a, b, S13, 0xa8304613); /* 7 */
+ FF (b, c, d, a, S14, 0xfd469501); /* 8 */
+ FF (a, b, c, d, S11, 0x698098d8); /* 9 */
+ FF (d, a, b, c, S12, 0x8b44f7af); /* 10 */
+ FF (c, d, a, b, S13, 0xffff5bb1); /* 11 */
+ FF (b, c, d, a, S14, 0x895cd7be); /* 12 */
+ FF (a, b, c, d, S11, 0x6b901122); /* 13 */
+ FF (d, a, b, c, S12, 0xfd987193); /* 14 */
+ FF (c, d, a, b, S13, 0xa679438e); /* 15 */
+ FF (b, c, d, a, S14, 0x49b40821); /* 16 */
+
+ /* Round 2 */
+ GG (a, b, c, d, 1, S21, 0xf61e2562); /* 17 */
+ GG (d, a, b, c, 6, S22, 0xc040b340); /* 18 */
+ GG (c, d, a, b, 11, S23, 0x265e5a51); /* 19 */
+ GG (b, c, d, a, 0, S24, 0xe9b6c7aa); /* 20 */
+ GG (a, b, c, d, 5, S21, 0xd62f105d); /* 21 */
+ GG (d, a, b, c, 10, S22, 0x2441453); /* 22 */
+ GG (c, d, a, b, 15, S23, 0xd8a1e681); /* 23 */
+ GG (b, c, d, a, 4, S24, 0xe7d3fbc8); /* 24 */
+ GG (a, b, c, d, 9, S21, 0x21e1cde6); /* 25 */
+ GG (d, a, b, c, 14, S22, 0xc33707d6); /* 26 */
+ GG (c, d, a, b, 3, S23, 0xf4d50d87); /* 27 */
+ GG (b, c, d, a, 8, S24, 0x455a14ed); /* 28 */
+ GG (a, b, c, d, 13, S21, 0xa9e3e905); /* 29 */
+ GG (d, a, b, c, 2, S22, 0xfcefa3f8); /* 30 */
+ GG (c, d, a, b, 7, S23, 0x676f02d9); /* 31 */
+ GG (b, c, d, a, 12, S24, 0x8d2a4c8a); /* 32 */
+
+ /* Round 3 */
+ HH (a, b, c, d, 5, S31, 0xfffa3942); /* 33 */
+ HH (d, a, b, c, 8, S32, 0x8771f681); /* 34 */
+ HH (c, d, a, b, 11, S33, 0x6d9d6122); /* 35 */
+ HH (b, c, d, a, 14, S34, 0xfde5380c); /* 36 */
+ HH (a, b, c, d, 1, S31, 0xa4beea44); /* 37 */
+ HH (d, a, b, c, 4, S32, 0x4bdecfa9); /* 38 */
+ HH (c, d, a, b, 7, S33, 0xf6bb4b60); /* 39 */
+ HH (b, c, d, a, 10, S34, 0xbebfbc70); /* 40 */
+ HH (a, b, c, d, 13, S31, 0x289b7ec6); /* 41 */
+ HH (d, a, b, c, 0, S32, 0xeaa127fa); /* 42 */
+ HH (c, d, a, b, 3, S33, 0xd4ef3085); /* 43 */
+ HH (b, c, d, a, 6, S34, 0x4881d05); /* 44 */
+ HH (a, b, c, d, 9, S31, 0xd9d4d039); /* 45 */
+ HH (d, a, b, c, 12, S32, 0xe6db99e5); /* 46 */
+ HH (c, d, a, b, 15, S33, 0x1fa27cf8); /* 47 */
+ HH (b, c, d, a, 2, S34, 0xc4ac5665); /* 48 */
+
+ /* Round 4 */
+ II (a, b, c, d, 0, S41, 0xf4292244); /* 49 */
+ II (d, a, b, c, 7, S42, 0x432aff97); /* 50 */
+ II (c, d, a, b, 14, S43, 0xab9423a7); /* 51 */
+ II (b, c, d, a, 5, S44, 0xfc93a039); /* 52 */
+ II (a, b, c, d, 12, S41, 0x655b59c3); /* 53 */
+ II (d, a, b, c, 3, S42, 0x8f0ccc92); /* 54 */
+ II (c, d, a, b, 10, S43, 0xffeff47d); /* 55 */
+ II (b, c, d, a, 1, S44, 0x85845dd1); /* 56 */
+ II (a, b, c, d, 8, S41, 0x6fa87e4f); /* 57 */
+ II (d, a, b, c, 15, S42, 0xfe2ce6e0); /* 58 */
+ II (c, d, a, b, 6, S43, 0xa3014314); /* 59 */
+ II (b, c, d, a, 13, S44, 0x4e0811a1); /* 60 */
+ II (a, b, c, d, 4, S41, 0xf7537e82); /* 61 */
+ II (d, a, b, c, 11, S42, 0xbd3af235); /* 62 */
+ II (c, d, a, b, 2, S43, 0x2ad7d2bb); /* 63 */
+ II (b, c, d, a, 9, S44, 0xeb86d391); /* 64 */
+
+ A += a; TRUNC32(A);
+ B += b; TRUNC32(B);
+ C += c; TRUNC32(C);
+ D += d; TRUNC32(D);
+
+ } while (--blocks);
+ ctx->A = A;
+ ctx->B = B;
+ ctx->C = C;
+ ctx->D = D;
+}
+
+
+#ifdef MD5_DEBUG
+static char*
+ctx_dump(MD5_CTX* ctx)
+{
+ static char buf[1024];
+ sprintf(buf, "{A=%x,B=%x,C=%x,D=%x,%d,%d(%d)}",
+ ctx->A, ctx->B, ctx->C, ctx->D,
+ ctx->bytes_low, ctx->bytes_high, (ctx->bytes_low&0x3F));
+ return buf;
+}
+#endif
+
+
+static void
+MD5Update(MD5_CTX* ctx, const U8* buf, STRLEN len)
+{
+ STRLEN blocks;
+ STRLEN fill = ctx->bytes_low & 0x3F;
+
+#ifdef MD5_DEBUG
+ static int ucount = 0;
+ fprintf(stderr,"%5i: Update(%s, %p, %d)\n", ++ucount, ctx_dump(ctx),
+ buf, len);
+#endif
+
+ ctx->bytes_low += len;
+ if (ctx->bytes_low < len) /* wrap around */
+ ctx->bytes_high++;
+
+ if (fill) {
+ STRLEN missing = 64 - fill;
+ if (len < missing) {
+ Copy(buf, ctx->buffer + fill, len, U8);
+ return;
+ }
+ Copy(buf, ctx->buffer + fill, missing, U8);
+ MD5Transform(ctx, ctx->buffer, 1);
+ buf += missing;
+ len -= missing;
+ }
+
+ blocks = len >> 6;
+ if (blocks)
+ MD5Transform(ctx, buf, blocks);
+ if ( (len &= 0x3F)) {
+ Copy(buf + (blocks << 6), ctx->buffer, len, U8);
+ }
+}
+
+
+static void
+MD5Final(U8* digest, MD5_CTX *ctx)
+{
+ STRLEN fill = ctx->bytes_low & 0x3F;
+ STRLEN padlen = (fill < 56 ? 56 : 120) - fill;
+ U32 bits_low, bits_high;
+#ifdef MD5_DEBUG
+ fprintf(stderr," Final: %s\n", ctx_dump(ctx));
+#endif
+ Copy(PADDING, ctx->buffer + fill, padlen, U8);
+ fill += padlen;
+
+ bits_low = ctx->bytes_low << 3;
+ bits_high = (ctx->bytes_high << 3) | (ctx->bytes_low >> 29);
+#ifdef BYTESWAP
+ *(U32*)(ctx->buffer + fill) = BYTESWAP(bits_low); fill += 4;
+ *(U32*)(ctx->buffer + fill) = BYTESWAP(bits_high); fill += 4;
+#else
+ u2s(bits_low, ctx->buffer + fill); fill += 4;
+ u2s(bits_high, ctx->buffer + fill); fill += 4;
+#endif
+
+ MD5Transform(ctx, ctx->buffer, fill >> 6);
+#ifdef MD5_DEBUG
+ fprintf(stderr," Result: %s\n", ctx_dump(ctx));
+#endif
+
+#ifdef BYTESWAP
+ *(U32*)digest = BYTESWAP(ctx->A); digest += 4;
+ *(U32*)digest = BYTESWAP(ctx->B); digest += 4;
+ *(U32*)digest = BYTESWAP(ctx->C); digest += 4;
+ *(U32*)digest = BYTESWAP(ctx->D);
+#else
+ u2s(ctx->A, digest);
+ u2s(ctx->B, digest+4);
+ u2s(ctx->C, digest+8);
+ u2s(ctx->D, digest+12);
+#endif
+}
+
+#ifndef INT2PTR
+#define INT2PTR(any,d) (any)(d)
+#endif
+
static MD5_CTX* get_md5_ctx(pTHX_ SV* sv)
{
MAGIC *mg;
@@ -306,7 +678,7 @@ addfile(self, fh)
InputStream fh
PREINIT:
MD5_CTX* context = get_md5_ctx(aTHX_ self);
- STRLEN fill = (context->count >> 3) & (MD5_BLOCK_LENGTH - 1);
+ STRLEN fill = context->bytes_low & 0x3F;
#ifdef USE_HEAP_INSTEAD_OF_STACK
unsigned char* buffer;
#else
@@ -371,12 +743,14 @@ context(ctx, ...)
PPCODE:
if (items > 2) {
STRLEN len;
- ctx->count = SvUV(ST(1)) << 3;
+ unsigned long blocks = SvUV(ST(1));
unsigned char *buf = (unsigned char *)(SvPV(ST(2), len));
- ctx->state[0] = buf[ 0] | (buf[ 1]<<8) | (buf[ 2]<<16) | (buf[ 3]<<24);
- ctx->state[1] = buf[ 4] | (buf[ 5]<<8) | (buf[ 6]<<16) | (buf[ 7]<<24);
- ctx->state[2] = buf[ 8] | (buf[ 9]<<8) | (buf[10]<<16) | (buf[11]<<24);
- ctx->state[3] = buf[12] | (buf[13]<<8) | (buf[14]<<16) | (buf[15]<<24);
+ ctx->A = buf[ 0] | (buf[ 1]<<8) | (buf[ 2]<<16) | (buf[ 3]<<24);
+ ctx->B = buf[ 4] | (buf[ 5]<<8) | (buf[ 6]<<16) | (buf[ 7]<<24);
+ ctx->C = buf[ 8] | (buf[ 9]<<8) | (buf[10]<<16) | (buf[11]<<24);
+ ctx->D = buf[12] | (buf[13]<<8) | (buf[14]<<16) | (buf[15]<<24);
+ ctx->bytes_low = blocks << 6;
+ ctx->bytes_high = blocks >> 26;
if (items == 4) {
buf = (unsigned char *)(SvPV(ST(3), len));
MD5Update(ctx, buf, len);
@@ -386,20 +760,17 @@ context(ctx, ...)
XSRETURN(0);
}
- w=ctx->state[0]; out[ 0]=w; out[ 1]=(w>>8); out[ 2]=(w>>16); out[ 3]=(w>>24);
- w=ctx->state[1]; out[ 4]=w; out[ 5]=(w>>8); out[ 6]=(w>>16); out[ 7]=(w>>24);
- w=ctx->state[2]; out[ 8]=w; out[ 9]=(w>>8); out[10]=(w>>16); out[11]=(w>>24);
- w=ctx->state[3]; out[12]=w; out[13]=(w>>8); out[14]=(w>>16); out[15]=(w>>24);
+ w=ctx->A; out[ 0]=w; out[ 1]=(w>>8); out[ 2]=(w>>16); out[ 3]=(w>>24);
+ w=ctx->B; out[ 4]=w; out[ 5]=(w>>8); out[ 6]=(w>>16); out[ 7]=(w>>24);
+ w=ctx->C; out[ 8]=w; out[ 9]=(w>>8); out[10]=(w>>16); out[11]=(w>>24);
+ w=ctx->D; out[12]=w; out[13]=(w>>8); out[14]=(w>>16); out[15]=(w>>24);
EXTEND(SP, 3);
- ST(0) = sv_2mortal(newSViv((ctx->count >> 3)
- - ((ctx->count >> 3) % MD5_BLOCK_LENGTH)));
+ ST(0) = sv_2mortal(newSVuv(ctx->bytes_high << 26 |
+ ctx->bytes_low >> 6));
ST(1) = sv_2mortal(newSVpv(out, 16));
- ST(2) = sv_2mortal(newSVpv("",0));
- if (((ctx->count >> 3) & (MD5_BLOCK_LENGTH - 1)) != 0)
- ST(2) = sv_2mortal(newSVpv((char *)ctx->buffer,
- (ctx->count >> 3) & (MD5_BLOCK_LENGTH - 1)));
-
+ ST(2) = sv_2mortal(newSVpv((char *)ctx->buffer,
+ ctx->bytes_low & 0x3F));
XSRETURN(3);
void
generated by cgit v1.2.3 (git 2.25.1) at 2025-01-19 09:56:41 +0000