**
** By default, your current login name is used to create the default
** admin user. This can be overridden using the -A|--admin-user
** parameter.
**
** Options:
**    --admin-user|-A USERNAME   Make USERNAME the administrator
**    --once                     Don't save url.
**    --private                  Also clone private branches 
**    --ssl-identity=filename    Use the SSL identity if requested by the server
**    --ssh-command|-c 'command' Use this SSH command
**
** See also: init
*/
void clone_cmd(void){
  char *zPassword;
  const char *zDefaultUser;   /* Optional name of the default user */
  int nErr = 0;
  int bPrivate = 0;           /* Also clone private branches */
  int urlFlags = URL_PROMPT_PW | URL_REMEMBER;

  if( find_option("private",0,0)!=0 ) bPrivate = SYNC_PRIVATE;
  if( find_option("once",0,0)!=0) urlFlags &= ~URL_REMEMBER;
  clone_ssh_find_options();
  url_proxy_options();
  if( g.argc < 4 ){
    usage("?OPTIONS? FILE-OR-URL NEW-REPOSITORY");
  }
  db_open_config(0);
  if( file_size(g.argv[3])>0 ){
    fossil_fatal("file already exists: %s", g.argv[3]);
  }

  zDefaultUser = find_option("admin-user","A",1);

  url_parse(g.argv[2], urlFlags);
  if( zDefaultUser==0 && g.urlUser!=0 ) zDefaultUser = g.urlUser;
  if( g.urlIsFile ){
    file_copy(g.urlName, g.argv[3]);
    db_close(1);
    db_open_repository(g.argv[3]);
    db_record_repository_filename(g.argv[3]);
    url_remember();

  url_parse(0, URL_REMEMBER);
  if( g.urlProtocol==0 ) return 0;  
  if( g.urlUser!=0 && g.urlPasswd==0 ){
    g.urlPasswd = unobscure(db_get("last-sync-pw", 0));
    g.urlFlags |= URL_PROMPT_PW;
    url_prompt_for_password();
  }
  url_remember();
#if 0 /* Disabled for now */
  if( (flags & AUTOSYNC_PULL)!=0 && db_get_boolean("auto-shun",1) ){
    /* When doing an automatic pull, also automatically pull shuns from
    ** the server if pull_shuns is enabled.
    **
    ** TODO:  What happens if the shun list gets really big? 
    ** Maybe the shunning list should only be pulled on every 10th

  }else if( g.argc==3 ){
    zUrl = g.argv[2];
  }
  if( urlFlags & URL_REMEMBER ){
    clone_ssh_db_set_options();
  }
  url_parse(zUrl, urlFlags);
  url_remember();
  if( g.urlProtocol==0 ){
    if( urlOptional ) fossil_exit(0);
    usage("URL");
  }
  user_select();
  if( g.argc==2 ){
    if( ((*pSyncFlags) & (SYNC_PUSH|SYNC_PULL))==(SYNC_PUSH|SYNC_PULL) ){

  if( g.argc!=2 && g.argc!=3 ){
    usage("remote-url ?URL|off?");
  }
  if( g.argc==3 ){
    db_unset("last-sync-url", 0);
    db_unset("last-sync-pw", 0);
    if( is_false(g.argv[2]) ) return;
    url_parse(g.argv[2], URL_REMEMBER|URL_PROMPT_PW|URL_ASK_REMEMBER_PW);
  }
  url_remember();
  zUrl = db_get("last-sync-url", 0);
  if( zUrl==0 ){
    fossil_print("off\n");
    return;
  }else{
    url_parse(zUrl, 0);
    fossil_print("%s\n", g.urlCanonical);
  }
}

**
*******************************************************************************
**
** This file contains code for parsing URLs that appear on the command-line
*/
#include "config.h"
#include "url.h"
#include <stdio.h>
#ifdef _WIN32
#include <io.h>
#define isatty(d) _isatty(d)
#define fileno(s) _fileno(s)
#endif

#if INTERFACE
/*
** Flags for url_parse()
*/
#define URL_PROMPT_PW        0x001  /* Prompt for password if needed */
#define URL_REMEMBER         0x002  /* Remember the url for later reuse */

**
** HTTP url format as follows (HTTPS is the same with a different scheme):
**
**     http://userid:password@host:port/path
**
** SSH url format is:
**
**     ssh://userid@host:port/path?fossil=path/to/fossil.exe
**
*/
void url_parse(const char *zUrl, unsigned int urlFlags){
  int i, j, c;
  char *zFile = 0;


 
  if( zUrl==0 ){
    zUrl = db_get("last-sync-url", 0);
    if( zUrl==0 ) return;
    if( g.urlPasswd==0 ){
      g.urlPasswd = unobscure(db_get("last-sync-pw", 0));

    }
  }

  if( strncmp(zUrl, "http://", 7)==0
   || strncmp(zUrl, "https://", 8)==0
   || strncmp(zUrl, "ssh://", 6)==0
  ){
    int iStart;

    for(i=iStart; (c=zUrl[i])!=0 && c!='/' && c!='@'; i++){}
    if( c=='@' ){
      /* Parse up the user-id and password */
      for(j=iStart; j<i && zUrl[j]!=':'; j++){}
      g.urlUser = mprintf("%.*s", j-iStart, &zUrl[iStart]);
      dehttpize(g.urlUser);
      if( j<i ){
        if( ( urlFlags & URL_REMEMBER ) && g.urlIsSsh==0 ){
          urlFlags |= URL_ASK_REMEMBER_PW;
        }
        g.urlPasswd = mprintf("%.*s", i-j-1, &zUrl[j+1]);
        dehttpize(g.urlPasswd);
      }
      if( g.urlIsSsh ){
        urlFlags &= ~URL_ASK_REMEMBER_PW;


      }
      zLogin = mprintf("%t@", g.urlUser);
      for(j=i+1; (c=zUrl[j])!=0 && c!='/' && c!=':'; j++){}
      g.urlName = mprintf("%.*s", j-i-1, &zUrl[i+1]);
      i = j;
    }else{
      for(i=iStart; (c=zUrl[i])!=0 && c!='/' && c!=':'; i++){}
      g.urlName = mprintf("%.*s", i-iStart, &zUrl[iStart]);
      zLogin = mprintf("");

    }else{
      free(zFile);
      fossil_fatal("unknown repository: %s", zUrl);
    }
  }else{
    fossil_fatal("unknown repository: %s", zUrl);
  }
  if( urlFlags ) g.urlFlags = urlFlags;
  if( g.urlIsFile ){
    Blob cfile;
    dehttpize(zFile);  
    file_canonical_name(zFile, &cfile, 0);
    free(zFile);
    g.urlProtocol = "file";
    g.urlPath = "";
    g.urlName = mprintf("%b", &cfile);
    g.urlCanonical = mprintf("file://%T", g.urlName);
    blob_reset(&cfile);
  }else if( g.urlUser!=0 && g.urlPasswd==0 && (urlFlags & URL_PROMPT_PW) ){
    url_prompt_for_password();
  }else if( g.urlUser!=0 && ( urlFlags & URL_ASK_REMEMBER_PW ) ){
    if( isatty(fileno(stdin)) ){
      if( save_password_prompt() ){
        g.urlFlags = urlFlags |= URL_REMEMBER_PW;
      }else{
        g.urlFlags = urlFlags &= ~URL_REMEMBER_PW;


      }


    }
  }
}

/*
** COMMAND: test-urlparser
**

    g.urlFlags |= URL_PROMPTED;
    g.urlPasswd = prompt_for_user_password(g.urlUser);
    if( g.urlPasswd[0]
     && (g.urlFlags & (URL_REMEMBER|URL_ASK_REMEMBER_PW))!=0
    ){
      if( save_password_prompt() ){
        g.urlFlags |= URL_REMEMBER_PW;
      }else{
        g.urlFlags &= ~URL_REMEMBER_PW;


      }
    }
  }else{
    fossil_fatal("missing or incorrect password for user \"%s\"",
                 g.urlUser);
  }
}

/*
** Remember the URL and password if requested.
*/
void url_remember(void){
  if( g.urlFlags & URL_REMEMBER ){
    db_set("last-sync-url", g.urlCanonical, 0);
    if( g.urlUser!=0 && g.urlPasswd!=0 && ( g.urlFlags & URL_REMEMBER_PW ) ){
      db_set("last-sync-pw", obscure(g.urlPasswd), 0);
    }

  }
}

/* Preemptively prompt for a password if a username is given in the
** URL but no password.
*/
void url_get_password_if_needed(void){
  if( (g.urlUser && g.urlUser[0])
   && (g.urlPasswd==0 || g.urlPasswd[0]==0)
   && isatty(fileno(stdin))
  ){
    url_prompt_for_password();
  }
}

/*
** Prompt to save Fossil user password
*/
int save_password_prompt(){
  Blob x;
  char c;
  const char *old = db_get("last-sync-pw", 0);
  if( (old!=0) && fossil_strcmp(unobscure(old), g.urlPasswd)==0 ){
     return 0;
  }
  prompt_user("remember password (Y/n)? ", &x);
  c = blob_str(&x)[0];
  blob_reset(&x);
  return ( c!='n' && c!='N' );
}

/*

          fossil_print("Error: %s\n", zMsg);
          if( fossil_strcmp(zMsg, "login failed")==0 ){
            if( nCycle<2 ){
              g.urlPasswd = 0;
              go = 1;
              if( g.cgiOutput==0 ){
                g.urlFlags |= URL_PROMPT_PW;
                g.urlFlags &= ~URL_PROMPTED;
                url_prompt_for_password();
                url_remember();
              }
            }
          }else{
            blob_appendf(&xfer.err, "server says: %s\n", zMsg);
            nErr++;
          }
          break;

     and  "[/help?cmd=finfo | fossil finfo]" commands.
  *  Option -n|--limit of "[/help?cmd=timeline | fossil timeline]" now
     specifies the number of entries, just like all other commands which
     have the -n|--limit option. The various timeline-related functions
     now output "+++ end of timeline reached +++" whenever appropriate.
     Use "-n 0" if no limit is desired, the end of timeline marker will
     not be printed then.
  *  Fix handling of password embedded in Fossil URL.
  *  New --once option to [/help?cmd=clone | fossil clone] command which does
     not store the URL or password when cloning.

<h2>Changes For Version 1.27 (2013-09-11)</h2>
  *  Enhance the [/help?cmd=changes | fossil changes],
     [/help?cmd=clean | fossil clean], [/help?cmd=extras | fossil extras],
     [/help?cmd=ls | fossil ls] and [/help?cmd=status | fossil status] commands
     to restrict operation to files and directories named on the command-line.
  *  New --integrate option to [/help?cmd=merge | fossil merge], which