Fossil with Commonmark

  }

  /* Set the capabilities */
  login_set_capabilities(zCap);
  login_set_anon_nobody_capabilities();
}

/*
** Memory of settings
*/
static int login_anon_once = 1;

/*
** Add the default privileges of users "nobody" and "anonymous" as appropriate
** for the user g.zLogin.
*/
void login_set_anon_nobody_capabilities(void){

  if( g.zLogin && login_anon_once ){
    const char *zCap;
    /* All logged-in users inherit privileges from "nobody" */
    zCap = db_text("", "SELECT cap FROM user WHERE login = 'nobody'");
    login_set_capabilities(zCap);
    if( fossil_strcmp(g.zLogin, "nobody")!=0 ){
      /* All logged-in users inherit privileges from "anonymous" */
      zCap = db_text("", "SELECT cap FROM user WHERE login = 'anonymous'");
      login_set_capabilities(zCap);
    }
    login_anon_once = 0;
  }
}

/*
** Set the global capability flags based on a capability string.
*/
void login_set_capabilities(const char *zCap){

      /* case 'q': */
      case 'r':  rc = g.okRdTkt;     break;
      case 's':  rc = g.okSetup;     break;
      case 't':  rc = g.okTktFmt;    break;
      /* case 'u': READER    */
      /* case 'v': DEVELOPER */
      case 'w':  rc = g.okWrTkt;     break;
      case 'x':  rc = g.okPrivate;   break;
      /* case 'y': */
      case 'z':  rc = g.okZip;       break;
      default:   rc = 0;             break;
    }
  }
  return rc;
}

/*
** Change the login to zUser.
*/
void login_as_user(const char *zUser){
  char *zCap = "";   /* New capabilities */

  /* Turn off all capabilities from prior logins */
  g.okSetup = 0;
  g.okAdmin = 0;
  g.okDelete = 0;
  g.okPassword = 0;
  g.okQuery = 0;
  g.okWrite = 0;
  g.okRead = 0;
  g.okHistory = 0;
  g.okClone = 0;
  g.okRdWiki = 0;
  g.okNewWiki = 0;
  g.okApndWiki = 0;
  g.okWrWiki = 0;
  g.okRdTkt = 0;
  g.okNewTkt = 0;
  g.okApndTkt = 0;
  g.okWrTkt = 0;
  g.okAttach = 0;
  g.okTktFmt = 0;
  g.okRdAddr = 0;
  g.okZip = 0;
  g.okPrivate = 0;

  /* Set the global variables recording the userid and login.  The
  ** "nobody" user is a special case in that g.zLogin==0.
  */
  g.userUid = db_int(0, "SELECT uid FROM user WHERE login=%Q", zUser);
  if( g.userUid==0 ){
    zUser = 0;
    g.userUid = db_int(0, "SELECT uid FROM user WHERE login='nobody'");
  }
  if( g.userUid ){
    zCap = db_text("", "SELECT cap FROM user WHERE uid=%d", g.userUid);
  }
  if( fossil_strcmp(zUser,"nobody")==0 ) zUser = 0;
  g.zLogin = fossil_strdup(zUser);

  /* Set the capabilities */
  login_set_capabilities(zCap);
  login_anon_once = 1;
  login_set_anon_nobody_capabilities();
}

/*
** Call this routine when the credential check fails.  It causes
** a redirect to the "login" page.
*/
void login_needed(void){
  const char *zUrl = PD("REQUEST_URI", "index");

  if( zPathInfo==0 || zPathInfo[0]==0 
      || (zPathInfo[0]=='/' && zPathInfo[1]==0) ){
    fossil_redirect_home();
  }else{
    zPath = mprintf("%s", zPathInfo);
  }

  /* Make g.zPath point to the first element of the path.  Make
  ** g.zExtra point to everything past that point.
  */
  while(1){
    char *zAltRepo = 0;
    g.zPath = &zPath[1];
    for(i=1; zPath[i] && zPath[i]!='/'; i++){}
    if( zPath[i]=='/' ){
      zPath[i] = 0;
      g.zExtra = &zPath[i+1];

      /* Look for sub-repositories.  A sub-repository is another repository
      ** that accepts the login credentials of the current repository.  A
      ** subrepository is identified by a CONFIG table entry "subrepo:NAME"
      ** where NAME is the first component of the path.  The value of the
      ** the CONFIG entries is the string "USER:FILENAME" where USER is the
      ** USER name to log in as in the subrepository and FILENAME is the
      ** repository filename. 
      */
      zAltRepo = db_text(0, "SELECT value FROM config WHERE name='subrepo:%q'",
                         g.zPath);
      if( zAltRepo ){
        int nHost;
        int jj;
        char *zUser = zAltRepo;
        login_check_credentials();
        for(jj=0; zAltRepo[jj] && zAltRepo[jj]!=':'; jj++){}
        if( zAltRepo[jj]==':' ){
          zAltRepo[jj] = 0;
          zAltRepo += jj+1;
        }else{
          zUser = "nobody";
        }
        if( zAltRepo[0]!='/' ){
          zAltRepo = mprintf("%s/../%s", g.zRepositoryName, zAltRepo);
          file_simplify_name(zAltRepo, -1);
        }
        db_close(1);
        db_open_repository(zAltRepo);
        login_as_user(zUser);
        g.okPassword = 0;
        zPath += i;
        nHost = g.zTop - g.zBaseURL;
        g.zBaseURL = mprintf("%z/%s", g.zBaseURL, g.zPath);
        g.zTop = g.zBaseURL + nHost;
        continue;
      }
    }else{
      g.zExtra = 0;
    }
    break;
  }
  if( g.zExtra ){
    /* CGI parameters get this treatment elsewhere, but places like getfile
    ** will use g.zExtra directly.
    */
    dehttpize(g.zExtra);
    cgi_set_parameter_nocopy("name", g.zExtra);