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Overview
Comment:Fix an undersized buffer in the SHA1 implementation.
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SHA1: fb2768154c513881886e89801e906bea959197b3
User & Date: drh 2016-06-08 13:59:35.817
Context
2016-06-08
14:04
Add the "dbhash.exe" utility program that computes a SHA1 hash over the invariant content of an SQLite database file. Free space in the file, the page size, auto_vacuum status, text encoding, and so forth do not change the hash. Only the content matters. (check-in: f48a4ad33e user: drh tags: trunk)
13:59
Fix an undersized buffer in the SHA1 implementation. (Closed-Leaf check-in: fb2768154c user: drh tags: dbhash)
13:49
Fix the dbhash utility so that it ignores the root page number when hashing the sqlite_master table. Add new command-line options. Add the ability to hash multiple databases with a single command. (check-in: 44f157e0f0 user: drh tags: dbhash)
Changes
Unified Diff Ignore Whitespace Patch
Changes to tool/dbhash.c.
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/* Add padding and compute and output the message digest. */
static void hash_finish(const char *zName){
  unsigned int i;
  unsigned char finalcount[8];
  unsigned char digest[20];
  static const char zEncode[] = "0123456789abcdef";
  char zOut[40];

  for (i = 0; i < 8; i++){
    finalcount[i] = (unsigned char)((g.cx.count[(i >= 4 ? 0 : 1)]
       >> ((3-(i & 3)) * 8) ) & 255); /* Endian independent */
  }
  hash_step((const unsigned char *)"\200", 1);
  while ((g.cx.count[0] & 504) != 448){








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/* Add padding and compute and output the message digest. */
static void hash_finish(const char *zName){
  unsigned int i;
  unsigned char finalcount[8];
  unsigned char digest[20];
  static const char zEncode[] = "0123456789abcdef";
  char zOut[41];

  for (i = 0; i < 8; i++){
    finalcount[i] = (unsigned char)((g.cx.count[(i >= 4 ? 0 : 1)]
       >> ((3-(i & 3)) * 8) ) & 255); /* Endian independent */
  }
  hash_step((const unsigned char *)"\200", 1);
  while ((g.cx.count[0] & 504) != 448){
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