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Overview
Comment:For new Docker-generated repositories, use "auto" hash-policy as default: They might be synced with "sha1"-type repositories, this would render those repositories useless.
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SHA1: aa92dc8efe6d941a5a110e32048d06f42beb7ee6
User & Date: jan.nijtmans 2017-03-06 12:35:43
Context
2017-03-06
12:35
For new Docker-generated repositories, use "auto" hash-policy as default: They might be synced with "sha1"-type repositories, this would render those repositories useless. Closed-Leaf check-in: aa92dc8e user: jan.nijtmans tags: mistake
00:08
Add a new hyperlink to the hash policy document. check-in: 907021af user: drh tags: trunk
Changes
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Changes to src/db.c.

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  db_create_repository(g.argv[2]);
  db_open_repository(g.argv[2]);
  db_open_config(0, 0);
  if( zTemplate ) db_attach(zTemplate, "settingSrc");
  db_begin_transaction();
  if( bUseSha1 ){
    g.eHashPolicy = HPOLICY_SHA1;
    db_set_int("hash-policy", HPOLICY_SHA1, 0);
  }      
  if( zDate==0 ) zDate = "now";
  db_initial_setup(zTemplate, zDate, zDefaultUser);
  db_end_transaction(0);
  if( zTemplate ) db_detach("settingSrc");
  fossil_print("project-id: %s\n", db_get("project-code", 0));
  fossil_print("server-id:  %s\n", db_get("server-code", 0));







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  db_create_repository(g.argv[2]);
  db_open_repository(g.argv[2]);
  db_open_config(0, 0);
  if( zTemplate ) db_attach(zTemplate, "settingSrc");
  db_begin_transaction();
  if( bUseSha1 ){
    g.eHashPolicy = HPOLICY_AUTO;
    db_set_int("hash-policy", HPOLICY_AUTO, 0);
  }      
  if( zDate==0 ) zDate = "now";
  db_initial_setup(zTemplate, zDate, zDefaultUser);
  db_end_transaction(0);
  if( zTemplate ) db_detach("settingSrc");
  fossil_print("project-id: %s\n", db_get("project-code", 0));
  fossil_print("server-id:  %s\n", db_get("server-code", 0));

Changes to src/hname.c.

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** just two hashes, but HNAME_COUNT is currently fixed at 2.)
**
** Depending on the hash policy, the alternative hash may be disallowed.
** If the alterative hash is disallowed, the routine returns 0.  This
** routine returns 1 if iHType>0 and the alternative hash is allowed,
** and it always returns 1 when iHType==0.
**
** Alternative hash is disallowed for all hash policies except sha1
** and sha3.  
*/
int hname_hash(const Blob *pContent, unsigned int iHType, Blob *pHashOut){
  assert( iHType==0 || iHType==1 );
  if( iHType==1 ){
    switch( g.eHashPolicy ){
      case HPOLICY_SHA1:

        sha3sum_blob(pContent, 256, pHashOut);
        return 1;
      case HPOLICY_SHA3:
        sha1sum_blob(pContent, pHashOut);
        return 1;
    }
  }







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** just two hashes, but HNAME_COUNT is currently fixed at 2.)
**
** Depending on the hash policy, the alternative hash may be disallowed.
** If the alterative hash is disallowed, the routine returns 0.  This
** routine returns 1 if iHType>0 and the alternative hash is allowed,
** and it always returns 1 when iHType==0.
**
** Alternative hash is disallowed for all hash policies except auto,
** sha1 and sha3.
*/
int hname_hash(const Blob *pContent, unsigned int iHType, Blob *pHashOut){
  assert( iHType==0 || iHType==1 );
  if( iHType==1 ){
    switch( g.eHashPolicy ){
      case HPOLICY_SHA1:
      case HPOLICY_AUTO:
        sha3sum_blob(pContent, 256, pHashOut);
        return 1;
      case HPOLICY_SHA3:
        sha1sum_blob(pContent, pHashOut);
        return 1;
    }
  }

Changes to src/main.c.

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  char *zRepositoryOption; /* Most recent cached repository option value */
  char *zRepositoryName;  /* Name of the repository database file */
  char *zLocalDbName;     /* Name of the local database file */
  char *zOpenRevision;    /* Check-in version to use during database open */
  int localOpen;          /* True if the local database is open */
  char *zLocalRoot;       /* The directory holding the  local database */
  int minPrefix;          /* Number of digits needed for a distinct UUID */
  int eHashPolicy;        /* Current hash policy.  On of HPOLICY_* */
  int fNoDirSymlinks;     /* True if --no-dir-symlinks flag is present */
  int fSqlTrace;          /* True if --sqltrace flag is present */
  int fSqlStats;          /* True if --sqltrace or --sqlstats are present */
  int fSqlPrint;          /* True if -sqlprint flag is present */
  int fQuiet;             /* True if -quiet flag is present */
  int fJail;              /* True if running with a chroot jail */
  int fHttpTrace;         /* Trace outbound HTTP requests */
................................................................................
** Open the repository to be served if it is known.  If g.argv[arg] is
** a directory full of repositories, then set g.zRepositoryName to
** the name of that directory and the specific repository will be
** opened later by process_one_web_page() based on the content of
** the PATH_INFO variable.
**
** If the fCreate flag is set, then create the repository if it
** does not already exist.
*/
static void find_server_repository(int arg, int fCreate){
  if( g.argc<=arg ){
    db_must_be_within_tree();
  }else{
    const char *zRepo = g.argv[arg];
    int isDir = file_isdir(zRepo);
................................................................................
      file_simplify_name(g.zRepositoryName, -1, 0);
    }else{
      if( isDir==0 && fCreate ){
        const char *zPassword;
        db_create_repository(zRepo);
        db_open_repository(zRepo);
        db_begin_transaction();


        db_initial_setup(0, "now", g.zLogin);
        db_end_transaction(0);
        fossil_print("project-id: %s\n", db_get("project-code", 0));
        fossil_print("server-id:  %s\n", db_get("server-code", 0));
        zPassword = db_text(0, "SELECT pw FROM user WHERE login=%Q", g.zLogin);
        fossil_print("admin-user: %s (initial password is \"%s\")\n",
                     g.zLogin, zPassword);







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  char *zRepositoryOption; /* Most recent cached repository option value */
  char *zRepositoryName;  /* Name of the repository database file */
  char *zLocalDbName;     /* Name of the local database file */
  char *zOpenRevision;    /* Check-in version to use during database open */
  int localOpen;          /* True if the local database is open */
  char *zLocalRoot;       /* The directory holding the  local database */
  int minPrefix;          /* Number of digits needed for a distinct UUID */
  int eHashPolicy;        /* Current hash policy.  One of HPOLICY_* */
  int fNoDirSymlinks;     /* True if --no-dir-symlinks flag is present */
  int fSqlTrace;          /* True if --sqltrace flag is present */
  int fSqlStats;          /* True if --sqltrace or --sqlstats are present */
  int fSqlPrint;          /* True if -sqlprint flag is present */
  int fQuiet;             /* True if -quiet flag is present */
  int fJail;              /* True if running with a chroot jail */
  int fHttpTrace;         /* Trace outbound HTTP requests */
................................................................................
** Open the repository to be served if it is known.  If g.argv[arg] is
** a directory full of repositories, then set g.zRepositoryName to
** the name of that directory and the specific repository will be
** opened later by process_one_web_page() based on the content of
** the PATH_INFO variable.
**
** If the fCreate flag is set, then create the repository if it
** does not already exist. Always use "auto" hash-policy in this case.
*/
static void find_server_repository(int arg, int fCreate){
  if( g.argc<=arg ){
    db_must_be_within_tree();
  }else{
    const char *zRepo = g.argv[arg];
    int isDir = file_isdir(zRepo);
................................................................................
      file_simplify_name(g.zRepositoryName, -1, 0);
    }else{
      if( isDir==0 && fCreate ){
        const char *zPassword;
        db_create_repository(zRepo);
        db_open_repository(zRepo);
        db_begin_transaction();
        g.eHashPolicy = HPOLICY_AUTO;
        db_set_int("hash-policy", HPOLICY_AUTO, 0);
        db_initial_setup(0, "now", g.zLogin);
        db_end_transaction(0);
        fossil_print("project-id: %s\n", db_get("project-code", 0));
        fossil_print("server-id:  %s\n", db_get("server-code", 0));
        zPassword = db_text(0, "SELECT pw FROM user WHERE login=%Q", g.zLogin);
        fossil_print("admin-user: %s (initial password is \"%s\")\n",
                     g.zLogin, zPassword);