Add md5 implementation into code base to get rid of

openssl dependency.




git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@153 4c0a9323-5329-0410-9bdc-e9ce6186880e

src/client/linux/handler/Makefile

@@ -1,7 +1,8 @@
-CC=g++
+CXX=g++
+CC=gcc
 
-CPPFLAGS=-gstabs -I../../.. -Wall -DNDEBUG -D_REENTRANT
+CXXFLAGS=-gstabs -I../../.. -Wall -D_REENTRANT
-LDFLAGS=-lpthread -lssl
+LDFLAGS=-lpthread
 
 OBJ_DIR=.
 BIN_DIR=.
@@ -22,7 +23,7 @@ EXCEPTION_TEST_SRC=exception_handler_test.cc
 THREAD_OBJ=$(patsubst %.cc,$(OBJ_DIR)/%.o,$(THREAD_SRC))
 SHARE_OBJ=$(patsubst %.cc,$(OBJ_DIR)/%.o,$(SHARE_SRC))
 HANDLER_OBJ=$(patsubst %.cc,$(OBJ_DIR)/%.o,$(HANDLER_SRC))
-SHARE_C_OBJ=$(patsubst %.c,$(OBJ_DIR)/%.o,$(SHARE_C_SRC))
+SHARE_C_OBJ=$(patsubst %.c,$(OBJ_DIR)/%.o,$(SHARE_C_SRC)) md5.o
 THREAD_TEST_OBJ=$(patsubst %.cc,$(OBJ_DIR)/%.o, $(THREAD_TEST_SRC))\
 		$(THREAD_OBJ)
 MINIDUMP_TEST_OBJ=$(patsubst %.cc,$(OBJ_DIR)/%.o, $(MINIDUMP_TEST_SRC))\
@@ -39,13 +40,16 @@ BIN=$(BIN_DIR)/minidump_test\
 all:$(BIN)
 
 $(BIN_DIR)/linux_thread_test:$(THREAD_TEST_OBJ)
-	$(CC) $(CPPFLAGS) $(LDFLAGS) $^ -o $@
+	$(CXX) $(CXXFLAGS) $(LDFLAGS) $^ -o $@
 
 $(BIN_DIR)/minidump_test:$(MINIDUMP_TEST_OBJ)
-	$(CC) $(CPPFLAGS) $(LDFLAGS) $^ -o $@
+	$(CXX) $(CXXFLAGS) $(LDFLAGS) $^ -o $@
 
 $(BIN_DIR)/exception_handler_test:$(EXCEPTION_TEST_OBJ)
-	$(CC) $(CPPFLAGS) $(LDFLAGS) $^ -o $@
+	$(CXX) $(CXXFLAGS) $(LDFLAGS) $^ -o $@
+
+md5.o:../../../common/linux/md5.c
+	$(CC) $(CXXFLAGS) -c $^
 
 clean:
 	rm -f $(BIN) *.o *.dmp

src/common/linux/file_id.cc

@@ -38,11 +38,11 @@
 #include <fcntl.h>
 #include <link.h>
 #include <sys/mman.h>
-#include <openssl/md5.h>
 #include <string.h>
 #include <unistd.h>
 
 #include "common/linux/file_id.h"
+#include "common/linux/md5.h"
 
 namespace google_breakpad {
 
@@ -109,10 +109,12 @@ bool FileID::ElfFileIdentifier(unsigned char identifier[16]) {
   const void *text_section = NULL;
   int text_size = 0;
   if (FindElfTextSection(base, &text_section, &text_size) && (text_size > 0)) {
-    MD5_CTX md5;
+    struct MD5Context md5;
-    MD5_Init(&md5);
+    MD5Init(&md5);
-    MD5_Update(&md5, text_section, text_size);
+    MD5Update(&md5,
-    MD5_Final(identifier, &md5);
+              static_cast<const unsigned char*>(text_section),
+              text_size);
+    MD5Final(identifier, &md5);
     success = true;
   }
 

src/common/linux/md5.c

@@ -0,0 +1,246 @@
+/*
+ * written by Colin Plumb in 1993, no copyright is claimed.
+ * This code is in the public domain; do with it what you wish.
+ *
+ * Equivalent code is available from RSA Data Security, Inc.
+ * This code has been tested against that, and is equivalent,
+ * except that you don't need to include two pages of legalese
+ * with every copy.
+ *
+ * To compute the message digest of a chunk of bytes, declare an
+ * MD5Context structure, pass it to MD5Init, call MD5Update as
+ * needed on buffers full of bytes, and then call MD5Final, which
+ * will fill a supplied 16-byte array with the digest.
+ */
+
+#include <string.h>
+
+#include "common/linux/md5.h"
+
+#ifndef WORDS_BIGENDIAN
+#define byteReverse(buf, len)   /* Nothing */
+#else
+/*
+ * Note: this code is harmless on little-endian machines.
+ */
+static void byteReverse(unsigned char *buf, unsigned longs)
+{
+  u32 t;
+  do {
+    t = (u32) ((unsigned) buf[3] << 8 | buf[2]) << 16 |
+      ((unsigned) buf[1] << 8 | buf[0]);
+    *(u32 *) buf = t;
+    buf += 4;
+  } while (--longs);
+}
+#endif
+
+static void MD5Transform(u32 buf[4], u32 const in[16]);
+
+/*
+ * 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)
+{
+  u32 t;
+
+  /* Update bitcount */
+
+  t = ctx->bits[0];
+  if ((ctx->bits[0] = t + ((u32) 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, (u32 *) 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, (u32 *) 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 is
+     always 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, (u32 *) 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 */
+  ((u32 *) ctx->in)[14] = ctx->bits[0];
+  ((u32 *) ctx->in)[15] = ctx->bits[1];
+
+  MD5Transform(ctx->buf, (u32 *) ctx->in);
+  byteReverse((unsigned char *) ctx->buf, 4);
+  memcpy(digest, ctx->buf, 16);
+  memset(ctx, 0, sizeof(ctx));        /* In case it's sensitive */
+}
+
+/* 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<<s | 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.
+ */
+static void MD5Transform(u32 buf[4], u32 const in[16])
+{
+  register u32 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;
+}

src/common/linux/md5.h

@@ -0,0 +1,31 @@
+// Copyright 2007 Google Inc. All Rights Reserved.
+// Author: liuli@google.com (Liu Li)
+#ifndef COMMON_LINUX_MD5_H__
+#define COMMON_LINUX_MD5_H__
+
+#include <stdint.h>
+
+typedef uint32_t u32;
+typedef uint8_t u8;
+
+struct MD5Context {
+  u32 buf[4];
+  u32 bits[2];
+  u8 in[64];
+};
+
+#ifdef __cplusplus
+extern "C" {
+#endif  // __cplusplus
+
+void MD5Init(struct MD5Context *ctx);
+
+void MD5Update(struct MD5Context *ctx, unsigned char const *buf, unsigned len);
+
+void MD5Final(unsigned char digest[16], struct MD5Context *ctx);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif  // COMMON_LINUX_MD5_H__

src/tools/linux/dump_syms/Makefile

@@ -1,8 +1,7 @@
-CPP=g++
+CXX=g++
 CC=gcc
 
-CPPFLAGS=-gstabs -I../../.. -Wall -D_REENTRANT
+CXXFLAGS=-gstabs -I../../.. -DNDEBUG -Wall -D_REENTRANT
-LDFLAGS=-lssl
 
 .PHONY:all clean
 
@@ -10,19 +9,22 @@ BIN=dump_syms
 
 all:$(BIN)
 
-DUMP_OBJ=dump_symbols.o guid_creator.o dump_syms.o file_id.o
+DUMP_OBJ=dump_symbols.o guid_creator.o dump_syms.o file_id.o md5.o
 
 dump_syms:$(DUMP_OBJ)
-	$(CPP) $(CPPFLAGS) $(LDFLAGS) -o $@ $^
+	$(CXX) $(CXXFLAGS) -o $@ $^
 
 dump_symbols.o:../../../common/linux/dump_symbols.cc
-	$(CPP) $(CPPFLAGS) -c $^
+	$(CXX) $(CXXFLAGS) -c $^
 
 guid_creator.o:../../../common/linux/guid_creator.cc
-	$(CPP) $(CPPFLAGS) -c $^
+	$(CXX) $(CXXFLAGS) -c $^
 
 file_id.o:../../../common/linux/file_id.cc
-	$(CPP) $(CPPFLAGS) -c $^
+	$(CXX) $(CXXFLAGS) -c $^
+
+md5.o:../../../common/linux/md5.c
+	$(CC) $(CXXFLAGS) -c $^
 
 clean:
 	rm -f $(BIN) $(DUMP_OBJ)

src/tools/linux/symupload/Makefile

@@ -1,6 +1,6 @@
-CC=g++
+CXX=g++
 
-CPPFLAGS=-gstabs -I../../.. -Wall -D_REENTRANT
+CXXFLAGS=-gstabs -I../../.. -Wall -D_REENTRANT
 
 .PHONY:all clean
 
@@ -12,13 +12,13 @@ DUMP_UPLOAD_OBJ=minidump_upload.o http_upload.o
 SYM_UPLOAD_OBJ=sym_upload.o http_upload.o
 
 minidump_upload:$(DUMP_UPLOAD_OBJ)
-	$(CC) $(CPPFLAGS) `curl-config --libs` -o $@ $^
+	$(CXX) $(CXXFLAGS) `curl-config --libs` -o $@ $^
 
 sym_upload:$(SYM_UPLOAD_OBJ)
-	$(CC) $(CPPFLAGS) `curl-config --libs` -o $@ $^
+	$(CXX) $(CXXFLAGS) `curl-config --libs` -o $@ $^
 
 http_upload.o:../../../common/linux/http_upload.cc
-	$(CC) $(CPPFLAGS) `curl-config --cflags` -c $^
+	$(CXX) $(CXXFLAGS) `curl-config --cflags` -c $^
 
 clean:
 	rm *.o $(BIN)