/***************************************************************************
 *                                  _   _ ____  _
 *  Project                     ___| | | |  _ \| |
 *                             / __| | | | |_) | |
 *                            | (__| |_| |  _ <| |___
 *                             \___|\___/|_| \_\_____|
 *
 * Copyright (C) 1998 - 2004, Daniel Stenberg, <daniel@haxx.se>, et al.
 *
 * This software is licensed as described in the file COPYING, which
 * you should have received as part of this distribution. The terms
 * are also available at http://curl.haxx.se/docs/copyright.html.
 *
 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
 * copies of the Software, and permit persons to whom the Software is
 * furnished to do so, under the terms of the COPYING file.
 *
 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
 * KIND, either express or implied.
 *
 * $Id$
 ***************************************************************************/

/* This is now designed to have its own local setup.h */
#include "setup.h"

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <ctype.h>
#include <errno.h>

#include <curl/curl.h>

#include "urlglob.h"
#include "writeout.h"
#include "getpass.h"
#include "homedir.h"
#ifdef USE_MANUAL
#include "hugehelp.h"
#endif
#ifdef USE_ENVIRONMENT
#include "writeenv.h"
#endif

#define CURLseparator   "--_curl_--"

#if defined(WIN32)&&!defined(__CYGWIN32__)
#include <winsock2.h>
#endif

#ifdef __NOVELL_LIBC__
#include <screen.h>
#endif

#ifdef TIME_WITH_SYS_TIME
/* We can include both fine */
#include <sys/time.h>
#include <time.h>
#else
#ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
#else
# include <time.h>
#endif
#endif


#include "version.h"

#ifdef HAVE_IO_H /* typical win32 habit */
#include <io.h>
#endif

#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif

#ifdef HAVE_FCNTL_H
#include <fcntl.h>
#endif

#ifdef HAVE_UTIME_H
#include <utime.h>
#else
#ifdef HAVE_SYS_UTIME_H
#include <sys/utime.h>
#endif

#endif /* HAVE_UTIME_H */

#ifdef HAVE_LIMITS_H
#include <limits.h>
#endif

#ifdef HAVE_SYS_POLL_H
#include <sys/poll.h>
#endif

#ifdef HAVE_LOCALE_H
#include <locale.h> /* for setlocale() */
#endif

#define ENABLE_CURLX_PRINTF
/* make the curlx header define all printf() functions to use the curlx_*
   versions instead */
#include <curlx.h> /* header from the libcurl directory */

/* The last #include file should be: */
#ifdef CURLDEBUG
#ifndef CURLTOOLDEBUG
#define MEMDEBUG_NODEFINES
#endif
/* This is low-level hard-hacking memory leak tracking and similar. Using
   the library level code from this client-side is ugly, but we do this
   anyway for convenience. */
#include "memdebug.h"
#endif

#define DEFAULT_MAXREDIRS  50L

#ifdef __DJGPP__
#include <dos.h>

char *msdosify(char *);
char *rename_if_dos_device_name(char *);

/* we want to glob our own argv[] */
char **__crt0_glob_function (char *arg)
{
  (void)arg;
  return (char**)0;
}
#endif /* __DJGPP__ */

#define CURL_PROGRESS_STATS 0 /* default progress display */
#define CURL_PROGRESS_BAR   1

/**
 * @def MIN
 * standard MIN macro
 */
#ifndef MIN
#define MIN(X,Y)        (((X) < (Y)) ? (X) : (Y))
#endif

typedef enum {
  HTTPREQ_UNSPEC,
  HTTPREQ_GET,
  HTTPREQ_HEAD,
  HTTPREQ_POST,
  HTTPREQ_SIMPLEPOST,
  HTTPREQ_CUSTOM,
  HTTPREQ_LAST
} HttpReq;

/* Just a set of bits */
#define CONF_DEFAULT  0

#define CONF_AUTO_REFERER (1<<4) /* the automatic referer-system please! */
#define CONF_VERBOSE  (1<<5) /* talk a lot */
#define CONF_HEADER   (1<<8) /* throw the header out too */
#define CONF_NOPROGRESS (1<<10) /* shut off the progress meter */
#define CONF_NOBODY   (1<<11) /* use HEAD to get http document */
#define CONF_FAILONERROR (1<<12) /* no output on http error codes >= 300 */
#define CONF_FTPLISTONLY (1<<16) /* Use NLST when listing ftp dir */
#define CONF_FTPAPPEND (1<<20) /* Append instead of overwrite on upload! */
#define CONF_NETRC    (1<<22)  /* read user+password from .netrc */
#define CONF_FOLLOWLOCATION (1<<23) /* use Location: Luke! */
#define CONF_GETTEXT  (1<<24) /* use ASCII/text for transfer */
#define CONF_MUTE     (1<<28) /* force NOPROGRESS */

#define CONF_NETRC_OPT (1<<29)  /* read user+password from either
                                 * .netrc or URL*/
#define CONF_UNRESTRICTED_AUTH (1<<30)
/* Send authentication (user+password) when following
 * locations, even when hostname changed */

#ifndef HAVE_STRDUP
/* Ultrix doesn't have strdup(), so make a quick clone: */
char *strdup(char *str)
{
  int len;
  char *newstr;

  len = strlen(str);
  newstr = (char *) malloc((len+1)*sizeof(char));
  if (!newstr)
    return (char *)NULL;

  strcpy(newstr,str);

  return newstr;

}
#endif

#ifdef WIN32
#include <direct.h>
#define F_OK 0
#define mkdir(x,y) (mkdir)(x)
#endif

#ifdef  VMS
#include "curlmsg_vms.h"
#endif

/* Support uploading and resuming of >2GB files
 */
#if defined(WIN32) && (SIZEOF_CURL_OFF_T > 4)
#define struct_stat struct _stati64
#define stat(file,st) _stati64(file,st)
#else
#define struct_stat struct stat
#endif

#ifdef WIN32
/*
 * Truncate a file handle at a 64-bit position 'where'.
 * Borland doesn't even support 64-bit types.
 */
#ifdef __BORLANDC__
#define _lseeki64(hnd,ofs,whence) lseek(hnd,ofs,whence)
#endif

static int ftruncate64 (int fd, curl_off_t where)
{
  curl_off_t curr;
  int rc = 0;

  if ((curr = _lseeki64(fd, 0, SEEK_CUR)) < 0)
     return -1;

  if (_lseeki64(fd, where, SEEK_SET) < 0)
     return -1;

  if (write(fd, 0, 0) < 0)
     rc = -1;
  _lseeki64(fd, curr, SEEK_SET);
  return rc;
}
#define ftruncate(fd,where) ftruncate64(fd,where)
#endif

/*
 * This is the main global constructor for the app. Call this before
 * _any_ libcurl usage. If this fails, *NO* libcurl functions may be
 * used, or havoc may be the result.
 */
static CURLcode main_init(void)
{
  return curl_global_init(CURL_GLOBAL_DEFAULT);
}

/*
 * This is the main global destructor for the app. Call this after
 * _all_ libcurl usage is done.
 */
static void main_free(void)
{
  curl_global_cleanup();
}

static int SetHTTPrequest(HttpReq req, HttpReq *store)
{
  if((*store == HTTPREQ_UNSPEC) ||
     (*store == req)) {
    *store = req;
    return 0;
  }
  fprintf(stderr, "You can only select one HTTP request!\n");
  return 1;
}

static void helpf(const char *fmt, ...)
{
  va_list ap;
  if(fmt) {
    va_start(ap, fmt);
    fputs("curl: ", stderr); /* prefix it */
    vfprintf(stderr, fmt, ap);
    va_end(ap);
  }
  fprintf(stderr, "curl: try 'curl --help' "
#ifdef USE_MANUAL
          "or 'curl --manual' "
#endif
          "for more information\n");
}

/*
 * A chain of these nodes contain URL to get and where to put the URL's
 * contents.
 */
struct getout {
  struct getout *next; /* next one */
  char *url;     /* the URL we deal with */
  char *outfile; /* where to store the output */
  char *infile;  /* file to upload, if GETOUT_UPLOAD is set */
  int flags;     /* options */
};
#define GETOUT_OUTFILE (1<<0)   /* set when outfile is deemed done */
#define GETOUT_URL     (1<<1)   /* set when URL is deemed done */
#define GETOUT_USEREMOTE (1<<2) /* use remote file name locally */
#define GETOUT_UPLOAD  (1<<3)   /* if set, -T has been used */
#define GETOUT_NOUPLOAD  (1<<4) /* if set, -T "" has been used */


static void help(void)
{
  int i;
  static const char * const helptext[]={
    "Usage: curl [options...] <url>",
    "Options: (H) means HTTP/HTTPS only, (F) means FTP only",
    " -a/--append        Append to target file when uploading (F)",
    " -A/--user-agent <string> User-Agent to send to server (H)",
    "    --anyauth       Tell curl to choose authentication method (H)",
    " -b/--cookie <name=string/file> Cookie string or file to read cookies from (H)",
    "    --basic         Enable HTTP Basic Authentication (H)",
    " -B/--use-ascii     Use ASCII/text transfer",
    " -c/--cookie-jar <file> Write cookies to this file after operation (H)",
    " -C/--continue-at <offset> Resumed transfer offset",
    " -d/--data <data>   HTTP POST data (H)",
    "    --data-ascii <data>   HTTP POST ASCII data (H)",
    "    --data-binary <data>  HTTP POST binary data (H)",
    "    --negotiate     Enable HTTP Negotiate Authentication (H)",
    "    --digest        Enable HTTP Digest Authentication (H)",
    "    --disable-eprt  Prevent curl from using EPRT or LPRT (F)",
    "    --disable-epsv  Prevent curl from using EPSV (F)",
    " -D/--dump-header <file> Write the headers to this file",
    "    --egd-file <file> EGD socket path for random data (SSL)",
    "    --tcp-nodelay   Set the TCP_NODELAY option",
#ifdef USE_ENVIRONMENT
    "    --environment   Write result codes to environment variables (RISC OS)",
#endif
    " -e/--referer       Referer URL (H)",
    " -E/--cert <cert[:passwd]> Client certificate file and password (SSL)",
    "    --cert-type <type> Certificate file type (DER/PEM/ENG) (SSL)",
    "    --key <key>     Private key file name (SSL)",
    "    --key-type <type> Private key file type (DER/PEM/ENG) (SSL)",
    "    --pass  <pass>  Pass phrase for the private key (SSL)",
    "    --engine <eng>  Crypto engine to use (SSL). \"--engine list\" for list",
    "    --cacert <file> CA certificate to verify peer against (SSL)",
    "    --capath <directory> CA directory (made using c_rehash) to verify",
    "                    peer against (SSL)",
    "    --ciphers <list> SSL ciphers to use (SSL)",
    "    --compressed    Request compressed response (using deflate or gzip)",
    "    --connect-timeout <seconds> Maximum time allowed for connection",
    "    --create-dirs   Create necessary local directory hierarchy",
    "    --crlf          Convert LF to CRLF in upload",
    " -f/--fail          Fail silently (no output at all) on errors (H)",
    "    --ftp-create-dirs Create the remote dirs if not present (F)",
    "    --ftp-pasv      Use PASV instead of PORT (F)",
    "    --ftp-ssl       Enable SSL/TLS for the ftp transfer (F)",
    " -F/--form <name=content> Specify HTTP multipart POST data (H)",
    " -g/--globoff       Disable URL sequences and ranges using {} and []",
    " -G/--get           Send the -d data with a HTTP GET (H)",
    " -h/--help          This help text",
    " -H/--header <line> Custom header to pass to server (H)",
    " -i/--include       Include protocol headers in the output (H/F)",
    " -I/--head          Show document info only",
    " -j/--junk-session-cookies Ignore session cookies read from file (H)",
    "    --interface <interface> Specify network interface to use",
    "    --krb4 <level>  Enable krb4 with specified security level (F)",
    " -k/--insecure      Allow curl to connect to SSL sites without certs (H)",
    " -K/--config        Specify which config file to read",
    " -l/--list-only     List only names of an FTP directory (F)",
    "    --limit-rate <rate> Limit transfer speed to this rate",
    " -L/--location      Follow Location: hints (H)",
    "    --location-trusted Follow Location: and send authentication even ",
    "                    to other hostnames (H)",
    " -m/--max-time <seconds> Maximum time allowed for the transfer",
    "    --max-redirs <num> Maximum number of redirects allowed (H)",
    "    --max-filesize <bytes> Maximum file size to download (H/F)",
    " -M/--manual        Display the full manual",
    " -n/--netrc         Must read .netrc for user name and password",
    "    --netrc-optional Use either .netrc or URL; overrides -n",
    "    --ntlm          Enable HTTP NTLM authentication (H)",
    " -N/--no-buffer     Disable buffering of the output stream",
    " -o/--output <file> Write output to <file> instead of stdout",
    " -O/--remote-name   Write output to a file named as the remote file",
    " -p/--proxytunnel   Operate through a HTTP proxy tunnel (using CONNECT)",
    "    --proxy-basic   Enable Basic authentication on the proxy (H)",
    "    --proxy-digest  Enable Digest authentication on the proxy (H)",
    "    --proxy-ntlm    Enable NTLM authentication on the proxy (H)",
    " -P/--ftp-port <address> Use PORT with address instead of PASV (F)",
    " -q                 If used as the first parameter disables .curlrc",
    " -Q/--quote <cmd>   Send command(s) to server before file transfer (F)",
    " -r/--range <range> Retrieve a byte range from a HTTP/1.1 or FTP server",
    "    --random-file <file> File for reading random data from (SSL)",
    " -R/--remote-time   Set the remote file's time on the local output",
    "    --retry <num>   Retry request <num> times if transient problems occur",
    "    --retry-delay <seconds> When retrying, wait this many seconds between each",
    "    --retry-max-time <seconds> Retry only within this period",
    " -s/--silent        Silent mode. Don't output anything",
    " -S/--show-error    Show error. With -s, make curl show errors when they occur",
    "    --socks <host[:port]> Use SOCKS5 proxy on given host + port",
    "    --stderr <file> Where to redirect stderr. - means stdout",
    " -t/--telnet-option <OPT=val> Set telnet option",
    "    --trace <file>  Dump a network/debug trace to the given file",
    "    --trace-ascii <file> Like --trace but without the hex output",
    " -T/--upload-file <file> Transfer/upload <file> to remote site",
    "    --url <URL>     Another way to specify URL to work with",
    " -u/--user <user[:password]> Specify user and password to use",
    "                    Overrides -n and --netrc-optional",
    " -U/--proxy-user <user[:password]> Specify Proxy authentication",
    " -v/--verbose       Make the operation more talkative",
    " -V/--version       Show version number and quit",
#ifdef __DJGPP__
    "    --wdebug        Turn on Watt-32 debugging under DJGPP",
#endif
    " -w/--write-out [format] What to output after completion",
    " -x/--proxy <host[:port]> Use HTTP proxy on given port",
    " -X/--request <command> Specify request command to use",
    " -y/--speed-time    Time needed to trig speed-limit abort. Defaults to 30",
    " -Y/--speed-limit   Stop transfer if below speed-limit for 'speed-time' secs",
    " -z/--time-cond <time> Transfer based on a time condition",
    " -0/--http1.0       Use HTTP 1.0 (H)",
    " -1/--tlsv1         Use TLSv1 (SSL)",
    " -2/--sslv2         Use SSLv2 (SSL)",
    " -3/--sslv3         Use SSLv3 (SSL)",
    " -4/--ipv4          Resolve name to IPv4 address",
    " -6/--ipv6          Resolve name to IPv6 address",
    " -#/--progress-bar  Display transfer progress as a progress bar",
    NULL
  };
  for(i=0; helptext[i]; i++) {
    puts(helptext[i]);
#ifdef __NOVELL_LIBC__
    if (i && ((i % 23) == 0))
      pressanykey();
#endif
  }
}

struct LongShort {
  const char *letter;
  const char *lname;
  bool extraparam;
};

struct Configurable {
  bool remote_time;
  char *random_file;
  char *egd_file;
  char *useragent;
  char *cookie;     /* single line with specified cookies */
  char *cookiejar;  /* write to this file */
  char *cookiefile; /* read from this file */
  bool cookiesession; /* new session? */
  bool encoding;    /* Accept-Encoding please */
  long authtype;    /* auth bitmask */
  bool use_resume;
  bool resume_from_current;
  bool disable_epsv;
  bool disable_eprt;
  curl_off_t resume_from;
  char *postfields;
  long postfieldsize;
  char *referer;
  long timeout;
  long connecttimeout;
  long maxredirs;
  curl_off_t max_filesize;
  char *headerfile;
  char *ftpport;
  char *iface;
  unsigned short porttouse;
  char *range;
  long low_speed_limit;
  long low_speed_time;
  bool showerror;
  char *userpwd;
  char *proxyuserpwd;
  char *proxy;
  bool proxytunnel;
  long conf;
  struct getout *url_list; /* point to the first node */
  struct getout *url_last; /* point to the last/current node */
  struct getout *url_get;  /* point to the node to fill in URL */
  struct getout *url_out;  /* point to the node to fill in outfile */
  char *cipher_list;
  char *cert;
  char *cert_type;
  char *cacert;
  char *capath;
  char *key;
  char *key_type;
  char *key_passwd;
  char *engine;
  bool list_engines;
  bool crlf;
  char *customrequest;
  char *krb4level;
  char *trace_dump; /* file to dump the network trace to, or NULL */
  FILE *trace_stream;
  bool trace_fopened;
  bool trace_ascii;
  long httpversion;
  bool progressmode;
  bool nobuffer;
  bool globoff;
  bool use_httpget;
  bool insecure_ok; /* set TRUE to allow insecure SSL connects */
  bool create_dirs;
  bool ftp_create_dirs;
  bool proxyntlm;
  bool proxydigest;
  bool proxybasic;
  char *writeout; /* %-styled format string to output */
  bool writeenv; /* write results to environment, if available */
  FILE *errors; /* if stderr redirect is requested */
  bool errors_fopened;
  struct curl_slist *quote;
  struct curl_slist *postquote;
  struct curl_slist *prequote;
  long ssl_version;
  long ip_version;
  curl_TimeCond timecond;
  time_t condtime;
  struct curl_slist *headers;
  struct curl_httppost *httppost;
  struct curl_httppost *last_post;
  struct curl_slist *telnet_options;
  HttpReq httpreq;

  /* for bandwidth limiting features: */
  curl_off_t sendpersecond; /* send to peer */
  curl_off_t recvpersecond; /* receive from peer */
  struct timeval lastsendtime;
  size_t lastsendsize;
  struct timeval lastrecvtime;
  size_t lastrecvsize;
  bool ftp_ssl;
  char *socks5proxy;
  bool tcp_nodelay;
  long req_retry;   /* number of retries */
  long retry_delay; /* delay between retries (in seconds) */
  long retry_maxtime; /* maximum time to keep retrying */
};

/* global variable to hold info about libcurl */
static curl_version_info_data *curlinfo;

static void parseconfig(const char *filename,
                        struct Configurable *config);
static char *my_get_line(FILE *fp);
static int create_dir_hierarchy(char *outfile);

static void GetStr(char **string,
                   char *value)
{
  if(*string)
    free(*string);
  if(value)
    *string = strdup(value);
  else
    *string = NULL;
}

static char *file2string(FILE *file)
{
  char buffer[256];
  char *ptr;
  char *string=NULL;
  size_t len=0;
  size_t stringlen;

  if(file) {
    while(fgets(buffer, sizeof(buffer), file)) {
      ptr= strchr(buffer, '\r');
      if(ptr)
        *ptr=0;
      ptr= strchr(buffer, '\n');
      if(ptr)
        *ptr=0;
      stringlen=strlen(buffer);
      if(string)
        string = realloc(string, len+stringlen+1);
      else
        string = malloc(stringlen+1);

      strcpy(string+len, buffer);

      len+=stringlen;
    }
    return string;
  }
  else
    return NULL; /* no string */
}

static char *file2memory(FILE *file, long *size)
{
  char buffer[1024];
  char *string=NULL;
  char *newstring=NULL;
  size_t len=0;
  long stringlen=0;

  if(file) {
    while((len = fread(buffer, 1, sizeof(buffer), file))) {
      if(string) {
        newstring = realloc(string, len+stringlen);
        if(newstring)
          string = newstring;
        else
          break; /* no more strings attached! :-) */
      }
      else
        string = malloc(len);
      memcpy(&string[stringlen], buffer, len);
      stringlen+=len;
    }
    *size = stringlen;
    return string;
  }
  else
    return NULL; /* no string */
}

static void clean_getout(struct Configurable *config)
{
  struct getout *node=config->url_list;
  struct getout *next;

  while(node) {
    next = node->next;
    if(node->url)
      free(node->url);
    if(node->outfile)
      free(node->outfile);
    if(node->infile)
      free(node->infile);
    free(node);

    node = next; /* GOTO next */
  }
}

static struct getout *new_getout(struct Configurable *config)
{
  struct getout *node =malloc(sizeof(struct getout));
  struct getout *last= config->url_last;
  if(node) {
    /* clear the struct */
    memset(node, 0, sizeof(struct getout));

    /* append this new node last in the list */
    if(last)
      last->next = node;
    else
      config->url_list = node; /* first node */

    /* move the last pointer */
    config->url_last = node;
  }
  return node;
}

/* Structure for storing the information needed to build a multiple files
 * section
*/
struct multi_files {
  struct curl_forms   form;
  struct multi_files *next;
};

/* Add a new list entry possibly with a type_name
 */
static struct multi_files *
AddMultiFiles (const char *file_name,
               const char *type_name,
               const char *show_filename,
               struct multi_files **multi_start,
               struct multi_files **multi_current)
{
  struct multi_files *multi;
  struct multi_files *multi_type = NULL;
  struct multi_files *multi_name = NULL;
  multi = (struct multi_files *)malloc(sizeof(struct multi_files));
  if (multi) {
    memset(multi, 0, sizeof(struct multi_files));
    multi->form.option = CURLFORM_FILE;
    multi->form.value = file_name;
  }
  else
    return NULL;

  if (!*multi_start)
    *multi_start = multi;

  if (type_name) {
    multi_type = (struct multi_files *)malloc(sizeof(struct multi_files));
    if (multi_type) {
      memset(multi_type, 0, sizeof(struct multi_files));
      multi_type->form.option = CURLFORM_CONTENTTYPE;
      multi_type->form.value = type_name;
      multi->next = multi_type;

      multi = multi_type;
    }
    else {
      free (multi);
      return NULL;
    }
  }
  if (show_filename) {
    multi_name = (struct multi_files *)malloc(sizeof(struct multi_files));
    if (multi_name) {
      memset(multi_name, 0, sizeof(struct multi_files));
      multi_name->form.option = CURLFORM_FILENAME;
      multi_name->form.value = show_filename;
      multi->next = multi_name;

      multi = multi_name;
    }
    else {
      free (multi);
      return NULL;
    }
  }

  if (*multi_current)
    (*multi_current)->next = multi;

  *multi_current = multi;

  return *multi_current;
}

/* Free the items of the list.
 */
static void FreeMultiInfo (struct multi_files *multi_start)
{
  struct multi_files *multi;
  while (multi_start) {
    multi = multi_start;
    multi_start = multi_start->next;
    free (multi);
  }
}

/* Print list of OpenSSL engines supported.
 */
static void list_engines (const struct curl_slist *engines)
{
  puts ("Build-time engines:");
  if (!engines) {
    puts ("  <none>");
    return;
  }
  for ( ; engines; engines = engines->next)
    printf ("  %s\n", engines->data);
}

/***************************************************************************
 *
 * formparse()
 *
 * Reads a 'name=value' paramter and builds the appropriate linked list.
 *
 * Specify files to upload with 'name=@filename'. Supports specified
 * given Content-Type of the files. Such as ';type=<content-type>'.
 *
 * You may specify more than one file for a single name (field). Specify
 * multiple files by writing it like:
 *
 * 'name=@filename,filename2,filename3'
 *
 * If you want content-types specified for each too, write them like:
 *
 * 'name=@filename;type=image/gif,filename2,filename3'
 *
 * If you want custom headers added for a single part, write them in a separate
 * file and do like this:
 *
 * 'name=foo;headers=@headerfile' or why not
 * 'name=@filemame;headers=@headerfile'
 *
 * To upload a file, but to fake the file name that will be included in the
 * formpost, do like this:
 *
 * 'name=@filename;filename=/dev/null'
 *
 * This function uses curl_formadd to fulfill it's job. Is heavily based on
 * the old curl_formparse code.
 *
 ***************************************************************************/

#define FORM_FILE_SEPARATOR ','
#define FORM_TYPE_SEPARATOR ';'

static int formparse(char *input,
                     struct curl_httppost **httppost,
                     struct curl_httppost **last_post)
{
  /* nextarg MUST be a string in the format 'name=contents' and we'll
     build a linked list with the info */
  char name[256];
  char *contents;
  char major[128];
  char minor[128];
  char *contp;
  const char *type = NULL;
  char *sep;
  char *sep2;

  if((1 == sscanf(input, "%255[^=]=", name)) &&
     (contp = strchr(input, '='))) {
    /* the input was using the correct format */

    /* Allocate the contents */
    contents = strdup(contp+1);
    if(!contents) {
      fprintf(stderr, "out of memory\n");
      return 1;
    }
    contp = contents;

    if('@' == contp[0]) {
      struct multi_files *multi_start = NULL, *multi_current = NULL;
      /* we use the @-letter to indicate file name(s) */
      contp++;

      multi_start = multi_current=NULL;

      do {
        /* since this was a file, it may have a content-type specifier
           at the end too, or a filename. Or both. */
        char *ptr;
        char *filename=NULL;

        sep=strchr(contp, FORM_TYPE_SEPARATOR);
        sep2=strchr(contp, FORM_FILE_SEPARATOR);

        /* pick the closest */
        if(sep2 && (sep2 < sep)) {
          sep = sep2;

          /* no type was specified! */
        }

        type = NULL;

        if(sep) {

          /* if we got here on a comma, don't do much */
          if(FORM_FILE_SEPARATOR == *sep)
            ptr = NULL;
          else
            ptr = sep+1;

          *sep=0; /* terminate file name at separator */

          while(ptr && (FORM_FILE_SEPARATOR!= *ptr)) {

            /* pass all white spaces */
            while(isspace((int)*ptr))
              ptr++;

            if(curlx_strnequal("type=", ptr, 5)) {

              /* set type pointer */
              type = &ptr[5];

              /* verify that this is a fine type specifier */
              if(2 != sscanf(type, "%127[^/]/%127[^;,\n]",
                             major, minor)) {
                fprintf(stderr, "Illegally formatted content-type field!\n");
                free(contents);
                FreeMultiInfo (multi_start);
                return 2; /* illegal content-type syntax! */
              }
              /* now point beyond the content-type specifier */
              sep = (char *)type + strlen(major)+strlen(minor)+1;

              *sep=0; /* zero terminate type string */

              ptr=sep+1;
            }
            else if(curlx_strnequal("filename=", ptr, 9)) {
              filename = &ptr[9];
              ptr=strchr(filename, FORM_TYPE_SEPARATOR);
              if(!ptr) {
                ptr=strchr(filename, FORM_FILE_SEPARATOR);
              }
              if(ptr) {
                *ptr=0; /* zero terminate */
                ptr++;
              }
            }
            else
              /* confusion, bail out of loop */
              break;
          }
          /* find the following comma */
          if(ptr)
            sep=strchr(ptr, FORM_FILE_SEPARATOR);
          else
            sep=NULL;
        }
        else {
          sep=strchr(contp, FORM_FILE_SEPARATOR);
        }
        if(sep) {
          /* the next file name starts here */
          *sep =0;
          sep++;
        }
        /* if type == NULL curl_formadd takes care of the problem */

        if (!AddMultiFiles (contp, type, filename, &multi_start,
                            &multi_current)) {
          fprintf(stderr, "Error building form post!\n");
          free(contents);
          FreeMultiInfo (multi_start);
          return 3;
        }
        contp = sep; /* move the contents pointer to after the separator */

      } while(sep && *sep); /* loop if there's another file name */

      /* now we add the multiple files section */
      if (multi_start) {
        struct curl_forms *forms = NULL;
        struct multi_files *ptr = multi_start;
        unsigned int i, count = 0;
        while (ptr) {
          ptr = ptr->next;
          ++count;
        }
        forms =
          (struct curl_forms *)malloc((count+1)*sizeof(struct curl_forms));
        if (!forms)
        {
          fprintf(stderr, "Error building form post!\n");
          free(contents);
          FreeMultiInfo (multi_start);
          return 4;
        }
        for (i = 0, ptr = multi_start; i < count; ++i, ptr = ptr->next)
        {
          forms[i].option = ptr->form.option;
          forms[i].value = ptr->form.value;
        }
        forms[count].option = CURLFORM_END;
        FreeMultiInfo (multi_start);
        if (curl_formadd(httppost, last_post,
                         CURLFORM_COPYNAME, name,
                         CURLFORM_ARRAY, forms, CURLFORM_END) != 0) {
          fprintf(stderr, "curl_formadd failed!\n");
          free(forms);
          free(contents);
          return 5;
        }
        free(forms);
      }
    }
    else {
      struct curl_forms info[4];
      int i = 0;
      char *ct = strstr(contp, ";type=");

      info[i].option = CURLFORM_COPYNAME;
      info[i].value = name;
      i++;

      if(ct) {
        info[i].option = CURLFORM_CONTENTTYPE;
        info[i].value = &ct[6];
        i++;
        ct[0]=0; /* zero terminate here */
      }

      if( contp[0]=='<' ) {
        info[i].option = CURLFORM_FILECONTENT;
        info[i].value = contp+1;
        i++;
        info[i].option = CURLFORM_END;

        if (curl_formadd(httppost, last_post,
                         CURLFORM_ARRAY, info, CURLFORM_END ) != 0) {
          fprintf(stderr, "curl_formadd failed, possibly the file %s is bad!\n",
                  contp+1);
          free(contents);
          return 6;
        }
      }
      else {
        info[i].option = CURLFORM_COPYCONTENTS;
        info[i].value = contp;
        i++;
        info[i].option = CURLFORM_END;
        if (curl_formadd(httppost, last_post,
                         CURLFORM_ARRAY, info, CURLFORM_END) != 0) {
          fprintf(stderr, "curl_formadd failed!\n");
          free(contents);
          return 7;
        }
      }
    }

  }
  else {
    fprintf(stderr, "Illegally formatted input field!\n");
    return 1;
  }
  free(contents);
  return 0;
}


typedef enum {
  PARAM_OK,
  PARAM_OPTION_AMBIGUOUS,
  PARAM_OPTION_UNKNOWN,
  PARAM_REQUIRES_PARAMETER,
  PARAM_BAD_USE,
  PARAM_HELP_REQUESTED,
  PARAM_GOT_EXTRA_PARAMETER,
  PARAM_BAD_NUMERIC,
  PARAM_LIBCURL_DOESNT_SUPPORT,
  PARAM_NO_MEM,
  PARAM_LAST
} ParameterError;

static const char *param2text(int res)
{
  ParameterError error = (ParameterError)res;
  switch(error) {
  case PARAM_GOT_EXTRA_PARAMETER:
    return "had unsupported trailing garbage";
  case PARAM_OPTION_UNKNOWN:
    return "is unknown";
  case PARAM_OPTION_AMBIGUOUS:
    return "is ambiguous";
  case PARAM_REQUIRES_PARAMETER:
    return "requires parameter";
  case PARAM_BAD_USE:
    return "is badly used here";
  case PARAM_BAD_NUMERIC:
    return "expected a proper numerical parameter";
  case PARAM_LIBCURL_DOESNT_SUPPORT:
    return "the installed libcurl version doesn't support this";
  case PARAM_NO_MEM:
    return "out of memory";
  default:
    return "unknown error";
  }
}

static void cleanarg(char *str)
{
#ifdef HAVE_WRITABLE_ARGV
  /* now that GetStr has copied the contents of nextarg, wipe the next
   * argument out so that the username:password isn't displayed in the
   * system process list */
  if (str) {
    size_t len = strlen(str);
    memset(str, ' ', len);
  }
#else
  (void)str;
#endif
}

/*
 * Parse the string and write the integer in the given address. Return
 * non-zero on failure, zero on success.
 *
 * The string must start with a digit to be valid.
 */

static int str2num(long *val, char *str)
{
  int retcode = 0;
  if(isdigit((int)*str))
    *val = atoi(str);
  else
    retcode = 1; /* badness */
  return retcode;
}

/**
 * Parses the given string looking for an offset (which may be
 * a larger-than-integer value).
 *
 * @param val  the offset to populate
 * @param str  the buffer containing the offset
 * @return zero if successful, non-zero if failure.
 */
static int str2offset(curl_off_t *val, char *str)
{
#if SIZEOF_CURL_OFF_T > 4
  /* Ugly, but without going through a bunch of rigmarole, we don't have the
   * definitions for LLONG_{MIN,MAX} or LONG_LONG_{MIN,MAX}.
   */
#ifndef LLONG_MAX
#ifdef _MSC_VER
#define LLONG_MAX (curl_off_t)0x7FFFFFFFFFFFFFFFi64
#define LLONG_MIN (curl_off_t)0x8000000000000000i64
#else
#define LLONG_MAX (curl_off_t)0x7FFFFFFFFFFFFFFFLL
#define LLONG_MIN (curl_off_t)0x8000000000000000LL
#endif
#endif

  /* this is a duplicate of the function that is also used in libcurl */
  *val = curlx_strtoofft(str, NULL, 0);

  if ((*val == LLONG_MAX || *val == LLONG_MIN) && errno == ERANGE)
    return 1;
#else
  *val = strtol(str, NULL, 0);
  if ((*val == LONG_MIN || *val == LONG_MAX) && errno == ERANGE)
    return 1;
#endif
  return 0;
}

static void checkpasswd(const char *kind, /* for what purpose */
                        char **userpwd) /* pointer to allocated string */
{
  char *ptr;
  if(!*userpwd)
    return;

  ptr = strchr(*userpwd, ':');
  if(!ptr) {
    /* no password present, prompt for one */
    char passwd[256]="";
    char prompt[256];
    size_t passwdlen;
    size_t userlen = strlen(*userpwd);
    char *passptr;

    /* build a nice-looking prompt */
    curlx_msnprintf(prompt, sizeof(prompt),
                   "Enter %s password for user '%s':",
                   kind, *userpwd);

    /* get password */
    getpass_r(prompt, passwd, sizeof(passwd));
    passwdlen = strlen(passwd);

    /* extend the allocated memory area to fit the password too */
    passptr = realloc(*userpwd,
                      passwdlen + 1 + /* an extra for the colon */
                      userlen + 1);   /* an extra for the zero */

    if(passptr) {
      /* append the password separated with a colon */
      passptr[userlen]=':';
      memcpy(&passptr[userlen+1], passwd, passwdlen+1);
      *userpwd = passptr;
    }
  }
}

static ParameterError add2list(struct curl_slist **list,
                               char *ptr)
{
  struct curl_slist *newlist = curl_slist_append(*list, ptr);
  if(newlist)
    *list = newlist;
  else
    return PARAM_NO_MEM;

  return PARAM_OK;
}

static ParameterError getparameter(char *flag, /* f or -long-flag */
                                   char *nextarg, /* NULL if unset */
                                   bool *usedarg, /* set to TRUE if the arg
                                                     has been used */
                                   struct Configurable *config)
{
  char letter;
  char subletter=0; /* subletters can only occur on long options */

  const char *parse=NULL;
  unsigned int j;
  time_t now;
  int hit=-1;
  bool longopt=FALSE;
  bool singleopt=FALSE; /* when true means '-o foo' used '-ofoo' */
  ParameterError err;

  /* single-letter,
     long-name,
     boolean whether it takes an additional argument
     */
  static const struct LongShort aliases[]= {
    /* all these ones, starting with "*" or "$" as a short-option have *no*
       short option to mention. */
    {"*", "url",         TRUE},
    {"*a", "random-file", TRUE},
    {"*b", "egd-file",   TRUE},
    {"*c", "connect-timeout", TRUE},
    {"*d", "ciphers",    TRUE},
    {"*e", "disable-epsv", FALSE},
#ifdef USE_ENVIRONMENT
    {"*f", "environment", FALSE},
#endif
    {"*g", "trace",      TRUE},
    {"*h", "trace-ascii", TRUE},
    {"*i", "limit-rate", TRUE},
    {"*j", "compressed",  FALSE}, /* might take an arg someday */
    {"*k", "digest",     FALSE},
    {"*l", "negotiate",  FALSE},
    {"*m", "ntlm",       FALSE},
    {"*n", "basic",      FALSE},
    {"*o", "anyauth",    FALSE},
#ifdef __DJGPP__
    {"*p", "wdebug",     FALSE},
#endif
    {"*q", "ftp-create-dirs", FALSE},
    {"*r", "create-dirs", FALSE},
    {"*s", "max-redirs",   TRUE},
    {"*t", "proxy-ntlm",   FALSE},
    {"*u", "crlf",        FALSE},
    {"*v", "stderr",      TRUE},
    {"*w", "interface",   TRUE},
    {"*x", "krb4",        TRUE},
    {"*y", "max-filesize", TRUE},
    {"*z", "disable-eprt", FALSE},
    {"$a", "ftp-ssl",    FALSE},
    {"$b", "ftp-pasv",   FALSE},
    {"$c", "socks5",     TRUE},
    {"$d", "tcp-nodelay",FALSE},
    {"$e", "proxy-digest", FALSE},
    {"$f", "proxy-basic", FALSE},
    {"$g", "retry",      TRUE},
    {"$h", "retry-delay", TRUE},
    {"$i", "retry-max-time", TRUE},
    {"0", "http1.0",     FALSE},
    {"1", "tlsv1",       FALSE},
    {"2", "sslv2",       FALSE},
    {"3", "sslv3",       FALSE},
    {"4", "ipv4",       FALSE},
    {"6", "ipv6",       FALSE},
    {"a", "append",      FALSE},
    {"A", "user-agent",  TRUE},
    {"b", "cookie",      TRUE},
    {"B", "use-ascii",   FALSE},
    {"c", "cookie-jar",  TRUE},
    {"C", "continue-at", TRUE},
    {"d", "data",        TRUE},
    {"da", "data-ascii", TRUE},
    {"db", "data-binary", TRUE},
    {"D", "dump-header", TRUE},
    {"e", "referer",     TRUE},
    {"E", "cert",        TRUE},
    {"Ea", "cacert",     TRUE},
    {"Eb","cert-type",   TRUE},
    {"Ec","key",         TRUE},
    {"Ed","key-type",    TRUE},
    {"Ee","pass",        TRUE},
    {"Ef","engine",      TRUE},
    {"Eg","capath ",     TRUE},
    {"f", "fail",        FALSE},
    {"F", "form",        TRUE},
    {"g", "globoff",     FALSE},
    {"G", "get",         FALSE},
    {"h", "help",        FALSE},
    {"H", "header",      TRUE},
    {"i", "include",     FALSE},
    {"I", "head",        FALSE},
    {"j", "junk-session-cookies", FALSE},
    {"k", "insecure",    FALSE},
    {"K", "config",      TRUE},
    {"l", "list-only",   FALSE},
    {"L", "location",    FALSE},
    {"Lt", "location-trusted", FALSE},
    {"m", "max-time",    TRUE},
    {"M", "manual",      FALSE},
    {"n", "netrc",       FALSE},
    {"no", "netrc-optional", FALSE},
    {"N", "no-buffer",   FALSE},
    {"o", "output",      TRUE},
    {"O", "remote-name", FALSE},
    {"p", "proxytunnel", FALSE},
    {"P", "ftpport",     TRUE}, /* older version */
    {"P", "ftp-port",    TRUE},
    {"q", "disable",     FALSE},
    {"Q", "quote",       TRUE},
    {"r", "range",       TRUE},
    {"R", "remote-time", FALSE},
    {"s", "silent",      FALSE},
    {"S", "show-error",  FALSE},
    {"t", "telnet-options", TRUE},
    {"T", "upload-file", TRUE},
    {"u", "user",        TRUE},
    {"U", "proxy-user",  TRUE},
    {"v", "verbose",     FALSE},
    {"V", "version",     FALSE},
    {"w", "write-out",   TRUE},
    {"x", "proxy",       TRUE},
    {"X", "request",     TRUE},
    {"X", "http-request", TRUE}, /* OBSOLETE VERSION */
    {"Y", "speed-limit",  TRUE},
    {"y", "speed-time", TRUE},
    {"z", "time-cond",   TRUE},
    {"#", "progress-bar",FALSE},
  };

  if(('-' != flag[0]) ||
     (('-' == flag[0]) && ('-' == flag[1]))) {
    /* this should be a long name */
    char *word=('-' == flag[0])?flag+2:flag;
    size_t fnam=strlen(word);
    int numhits=0;
    for(j=0; j< sizeof(aliases)/sizeof(aliases[0]); j++) {
      if(curlx_strnequal(aliases[j].lname, word, fnam)) {
        longopt = TRUE;
        numhits++;
        if(curlx_strequal(aliases[j].lname, word)) {
          parse = aliases[j].letter;
          hit = j;
          numhits = 1; /* a single unique hit */
          break;
        }
        parse = aliases[j].letter;
        hit = j;
      }
    }
    if(numhits>1) {
      /* this is at least the second match! */
      return PARAM_OPTION_AMBIGUOUS;
    }
    if(hit < 0) {
      return PARAM_OPTION_UNKNOWN;
    }
  }
  else {
    flag++; /* prefixed with one dash, pass it */
    hit=-1;
    parse = flag;
  }

  do {
    /* we can loop here if we have multiple single-letters */

    if(!longopt)
      letter = parse?(char)*parse:'\0';
    else {
      letter = parse[0];
      subletter = parse[1];
    }
    *usedarg = FALSE; /* default is that we don't use the arg */

#if 0
    fprintf(stderr, "OPTION: %c %s\n", letter, nextarg?nextarg:"<null>");
#endif
    if(hit < 0) {
      for(j=0; j< sizeof(aliases)/sizeof(aliases[0]); j++) {
        if(letter == aliases[j].letter[0]) {
          hit = j;
          break;
        }
      }
      if(hit < 0) {
        return PARAM_OPTION_UNKNOWN;
      }
    }
    if(hit < 0) {
      return PARAM_OPTION_UNKNOWN;
    }
    if(!longopt && aliases[hit].extraparam && parse[1]) {
      nextarg=(char *)&parse[1]; /* this is the actual extra parameter */
      singleopt=TRUE;   /* don't loop anymore after this */
    }
    else if(!nextarg && aliases[hit].extraparam) {
      return PARAM_REQUIRES_PARAMETER;
    }
    else if(nextarg && aliases[hit].extraparam)
      *usedarg = TRUE; /* mark it as used */

    switch(letter) {
    case '*': /* options without a short option */
      switch(subletter) {
      case 'a': /* random-file */
        GetStr(&config->random_file, nextarg);
        break;
      case 'b': /* egd-file */
        GetStr(&config->egd_file, nextarg);
        break;
      case 'c': /* connect-timeout */
        if(str2num(&config->connecttimeout, nextarg))
          return PARAM_BAD_NUMERIC;
        break;
      case 'd': /* ciphers */
        GetStr(&config->cipher_list, nextarg);
        break;
      case 'e': /* --disable-epsv */
        config->disable_epsv ^= TRUE;
        break;
#ifdef USE_ENVIRONMENT
      case 'f':
        config->writeenv ^= TRUE;
        break;
#endif
      case 'g': /* --trace */
        GetStr(&config->trace_dump, nextarg);
        break;
      case 'h': /* --trace-ascii */
        GetStr(&config->trace_dump, nextarg);
        config->trace_ascii = TRUE;
        break;
      case 'i': /* --limit-rate */
        {
          /* We support G, M, K too */
          char *unit;
          curl_off_t value = curlx_strtoofft(nextarg, &unit, 0);
          switch(nextarg[strlen(nextarg)-1]) {
          case 'G':
          case 'g':
            value *= 1024*1024*1024;
            break;
          case 'M':
          case 'm':
            value *= 1024*1024;
            break;
          case 'K':
          case 'k':
            value *= 1024;
            break;
          }
          config->recvpersecond = value;
          config->sendpersecond = value;
        }
        break;

      case 'j': /* --compressed */
        config->encoding ^= TRUE;
        break;

      case 'k': /* --digest */
        config->authtype = CURLAUTH_DIGEST;
        break;

      case 'l': /* --negotiate */
        if(curlinfo->features & CURL_VERSION_GSSNEGOTIATE)
          config->authtype = CURLAUTH_GSSNEGOTIATE;
        else
          return PARAM_LIBCURL_DOESNT_SUPPORT;
        break;

      case 'm': /* --ntlm */
        if(curlinfo->features & CURL_VERSION_NTLM)
          config->authtype = CURLAUTH_NTLM;
        else
          return PARAM_LIBCURL_DOESNT_SUPPORT;
        break;

      case 'n': /* --basic for completeness */
        config->authtype = CURLAUTH_BASIC;
        break;

      case 'o': /* --anyauth, let libcurl pick it */
        config->authtype = CURLAUTH_ANY;
        break;

#ifdef __DJGPP__
      case 'p': /* --wdebug */
        dbug_init();
        break;
#endif
      case 'q': /* --ftp-create-dirs */
        config->ftp_create_dirs ^= TRUE;
        break;

      case 'r': /* --create-dirs */
        config->create_dirs = TRUE;
        break;

      case 's': /* --max-redirs */
        /* specified max no of redirects (http(s)) */
        if(str2num(&config->maxredirs, nextarg))
          return PARAM_BAD_NUMERIC;
        break;

      case 't': /* --proxy-ntlm */
        if(curlinfo->features & CURL_VERSION_NTLM)
          config->proxyntlm ^= TRUE;
        else
          return PARAM_LIBCURL_DOESNT_SUPPORT;
        break;

      case 'u': /* --crlf */
        /* LF -> CRLF conversinon? */
        config->crlf = TRUE;
        break;

      case 'v': /* --stderr */
        if(strcmp(nextarg, "-")) {
          config->errors = fopen(nextarg, "wt");
          config->errors_fopened = TRUE;
        }
        else
          config->errors = stdout;
      break;
      case 'w': /* --interface */
        /* interface */
        GetStr(&config->iface, nextarg);
        break;
      case 'x': /* --krb4 */
        /* krb4 level string */
        if(curlinfo->features & CURL_VERSION_KERBEROS4)
          GetStr(&config->krb4level, nextarg);
        else
          return PARAM_LIBCURL_DOESNT_SUPPORT;
        break;
      case 'y': /* --max-filesize */
        if(str2offset(&config->max_filesize, nextarg))
          return PARAM_BAD_NUMERIC;
        break;
      case 'z': /* --disable-eprt */
        config->disable_eprt ^= TRUE;
        break;

      default: /* the URL! */
        {
          struct getout *url;
          if(config->url_get || (config->url_get=config->url_list)) {
            /* there's a node here, if it already is filled-in continue to find
               an "empty" node */
            while(config->url_get && (config->url_get->flags&GETOUT_URL))
              config->url_get = config->url_get->next;
          }

          /* now there might or might not be an available node to fill in! */

          if(config->url_get)
            /* existing node */
            url = config->url_get;
          else
            /* there was no free node, create one! */
            url=new_getout(config);

          if(url) {
            /* fill in the URL */
            GetStr(&url->url, nextarg);
            url->flags |= GETOUT_URL;
          }
        }
      }
      break;
    case '$': /* more options without a short option */
      switch(subletter) {
      case 'a': /* --ftp-ssl */
        config->ftp_ssl ^= TRUE;
        break;
      case 'b': /* --ftp-pasv */
        if(config->ftpport)
          free(config->ftpport);
        config->ftpport = NULL;
        break;
      case 'c': /* --socks specifies a socks5 proxy to use */
        GetStr(&config->socks5proxy, nextarg);
        break;
      case 'd': /* --tcp-nodelay option */
        config->tcp_nodelay ^= TRUE;
        break;
      case 'e': /* --proxy-digest */
        config->proxydigest ^= TRUE;
        break;
      case 'f': /* --proxy-basic */
        config->proxybasic ^= TRUE;
        break;
      case 'g': /* --retry */
        if(str2num(&config->req_retry, nextarg))
          return PARAM_BAD_NUMERIC;
        break;
      case 'h': /* --retry-delay */
        if(str2num(&config->retry_delay, nextarg))
          return PARAM_BAD_NUMERIC;
        break;
      case 'i': /* --retry-max-time */
        if(str2num(&config->retry_maxtime, nextarg))
          return PARAM_BAD_NUMERIC;
        /* break */
      }
      break;
    case '#': /* added 19990617 larsa */
      config->progressmode ^= CURL_PROGRESS_BAR;
      break;
    case '0':
      /* HTTP version 1.0 */
      config->httpversion = CURL_HTTP_VERSION_1_0;
      break;
    case '1':
      /* TLS version 1 */
      config->ssl_version = CURL_SSLVERSION_TLSv1;
      break;
    case '2':
      /* SSL version 2 */
      config->ssl_version = CURL_SSLVERSION_SSLv2;
      break;
    case '3':
      /* SSL version 3 */
      config->ssl_version = CURL_SSLVERSION_SSLv3;
      break;
    case '4':
      /* IPv4 */
      config->ip_version = 4;
      break;
    case '6':
      /* IPv6 */
      config->ip_version = 6;
      break;
    case 'a':
      /* This makes the FTP sessions use APPE instead of STOR */
      config->conf ^= CONF_FTPAPPEND;
      break;
    case 'A':
      /* This specifies the User-Agent name */
      GetStr(&config->useragent, nextarg);
      break;
    case 'b': /* cookie string coming up: */
      if(nextarg[0] == '@') {
        nextarg++;
      }
      else if(strchr(nextarg, '=')) {
        /* A cookie string must have a =-letter */
        GetStr(&config->cookie, nextarg);
        break;
      }
      /* We have a cookie file to read from! */
      GetStr(&config->cookiefile, nextarg);
      break;
    case 'B':
      /* use ASCII/text when transfering */
      config->conf ^= CONF_GETTEXT;
      break;
    case 'c':
      /* get the file name to dump all cookies in */
      GetStr(&config->cookiejar, nextarg);
      break;
    case 'C':
      /* This makes us continue an ftp transfer at given position */
      if(!curlx_strequal(nextarg, "-")) {
        if(str2offset(&config->resume_from, nextarg))
          return PARAM_BAD_NUMERIC;
        config->resume_from_current = FALSE;
      }
      else {
        config->resume_from_current = TRUE;
        config->resume_from = 0;
      }
      config->use_resume=TRUE;
      break;
    case 'd':
      /* postfield data */
      {
        char *postdata=NULL;

        if('@' == *nextarg) {
          /* the data begins with a '@' letter, it means that a file name
             or - (stdin) follows */
          FILE *file;

          nextarg++; /* pass the @ */

          if(curlx_strequal("-", nextarg))
            file = stdin;
          else
            file = fopen(nextarg, "rb");

          if(subletter == 'b') /* forced binary */
            postdata = file2memory(file, &config->postfieldsize);
          else
            postdata = file2string(file);
          if(file && (file != stdin))
            fclose(file);
        }
        else {
          GetStr(&postdata, nextarg);
        }

        if(config->postfields) {
          /* we already have a string, we append this one
             with a separating &-letter */
          char *oldpost=config->postfields;
          config->postfields=aprintf("%s&%s", oldpost, postdata);
          free(oldpost);
          free(postdata);
        }
        else
          config->postfields=postdata;
      }
      /*
        We can't set the request type here, as this data might be used in
        a simple GET if -G is used. Already or soon.

        if(SetHTTPrequest(HTTPREQ_SIMPLEPOST, &config->httpreq))
          return PARAM_BAD_USE;
      */
      break;
    case 'D':
      /* dump-header to given file name */
      GetStr(&config->headerfile, nextarg);
      break;
    case 'e':
      {
        char *ptr = strstr(nextarg, ";auto");
        if(ptr) {
          /* Automatic referer requested, this may be combined with a
             set initial one */
          config->conf |= CONF_AUTO_REFERER;
          *ptr = 0; /* zero terminate here */
        }
        GetStr(&config->referer, nextarg);
      }
      break;
    case 'E':
      switch(subletter) {
      case 'a': /* CA info PEM file */
        /* CA info PEM file */
        GetStr(&config->cacert, nextarg);
        break;
      case 'b': /* cert file type */
        GetStr(&config->cert_type, nextarg);
        break;
      case 'c': /* private key file */
        GetStr(&config->key, nextarg);
        break;
      case 'd': /* private key file type */
        GetStr(&config->key_type, nextarg);
        break;
      case 'e': /* private key passphrase */
        GetStr(&config->key_passwd, nextarg);
        cleanarg(nextarg);
        break;
      case 'f': /* crypto engine */
        GetStr(&config->engine, nextarg);
        if (config->engine && curlx_strequal(config->engine,"list"))
           config->list_engines = TRUE;
        break;
      case 'g': /* CA info PEM file */
        /* CA cert directory */
        GetStr(&config->capath, nextarg);
        break;
      default: /* certificate file */
        {
          char *ptr = strchr(nextarg, ':');
          /* Since we live in a world of weirdness and confusion, the win32
             dudes can use : when using drive letters and thus
             c:\file:password needs to work. In order not to break
             compatibility, we still use : as separator, but we try to detect
             when it is used for a file name! On windows. */
#ifdef WIN32
          if(ptr &&
             (ptr == &nextarg[1]) &&
             (nextarg[2] == '\\' || nextarg[2] == '/') &&
             (isalpha((int)nextarg[0])) )
             /* colon in the second column, followed by a backslash, and the
                first character is an alphabetic letter:

                this is a drive letter colon */
            ptr = strchr(&nextarg[3], ':'); /* find the next one instead */
#endif
          if(ptr) {
            /* we have a password too */
            *ptr=0;
            ptr++;
            GetStr(&config->key_passwd, ptr);
          }
          GetStr(&config->cert, nextarg);
          cleanarg(nextarg);
        }
      }
      break;
    case 'f':
      /* fail hard on errors  */
      config->conf ^= CONF_FAILONERROR;
      break;
    case 'F':
      /* "form data" simulation, this is a little advanced so lets do our best
         to sort this out slowly and carefully */
      if(formparse(nextarg,
                   &config->httppost,
                   &config->last_post))
        return PARAM_BAD_USE;
      if(SetHTTPrequest(HTTPREQ_POST, &config->httpreq))
        return PARAM_BAD_USE;
      break;

    case 'g': /* g disables URLglobbing */
      config->globoff ^= TRUE;
      break;

    case 'G': /* HTTP GET */
      config->use_httpget = TRUE;
      break;

    case 'h': /* h for help */
      help();
      return PARAM_HELP_REQUESTED;
    case 'H':
      /* A custom header to append to a list */
      err = add2list(&config->headers, nextarg);
      if(err)
        return err;
      break;
    case 'i':
      config->conf ^= CONF_HEADER; /* include the HTTP header as well */
      break;
    case 'j':
      config->cookiesession ^= TRUE;
      break;
    case 'I':
      /*
       * This is a bit tricky. We either SET both bits, or we clear both
       * bits. Let's not make any other outcomes from this.
       */
      if((CONF_HEADER|CONF_NOBODY) !=
         (config->conf&(CONF_HEADER|CONF_NOBODY)) ) {
        /* one of them weren't set, set both */
        config->conf |= (CONF_HEADER|CONF_NOBODY);
        if(SetHTTPrequest(HTTPREQ_HEAD, &config->httpreq))
          return PARAM_BAD_USE;
      }
      else {
        /* both were set, clear both */
        config->conf &= ~(CONF_HEADER|CONF_NOBODY);
        if(SetHTTPrequest(HTTPREQ_GET, &config->httpreq))
          return PARAM_BAD_USE;
      }
      break;
    case 'k': /* allow insecure SSL connects */
      config->insecure_ok ^= TRUE;
      break;
    case 'K': /* parse config file */
      parseconfig(nextarg, config);
      break;
    case 'l':
      config->conf ^= CONF_FTPLISTONLY; /* only list the names of the FTP dir */
      break;
    case 'L':
      config->conf ^= CONF_FOLLOWLOCATION; /* Follow Location: HTTP headers */
      switch (subletter) {
      case 't':
        /* Continue to send authentication (user+password) when following
         * locations, even when hostname changed */
        config->conf ^= CONF_UNRESTRICTED_AUTH;
        break;
      }
      break;
    case 'm':
      /* specified max time */
      if(str2num(&config->timeout, nextarg))
        return PARAM_BAD_NUMERIC;
      break;
    case 'M': /* M for manual, huge help */
#ifdef USE_MANUAL
      hugehelp();
      return PARAM_HELP_REQUESTED;
#else
      fprintf(stderr,
              "curl: built-in manual was disabled at build-time!\n");
      return PARAM_OPTION_UNKNOWN;
#endif
    case 'n':
      switch(subletter) {
      case 'o': /* CA info PEM file */
        /* use .netrc or URL */
        config->conf ^= CONF_NETRC_OPT;
        break;
      default:
        /* pick info from .netrc, if this is used for http, curl will
           automatically enfore user+password with the request */
        config->conf ^= CONF_NETRC;
        break;
      }
      break;
    case 'N':
      /* disable the output I/O buffering */
      config->nobuffer ^= 1;
      break;
    case 'o':
    case 'O':
      /* output file */
      {
        struct getout *url;
        if(config->url_out || (config->url_out=config->url_list)) {
          /* there's a node here, if it already is filled-in continue to find
             an "empty" node */
          while(config->url_out && (config->url_out->flags&GETOUT_OUTFILE))
            config->url_out = config->url_out->next;
        }

        /* now there might or might not be an available node to fill in! */

        if(config->url_out)
          /* existing node */
          url = config->url_out;
        else
          /* there was no free node, create one! */
          url=new_getout(config);

        if(url) {
          /* fill in the outfile */
          if('o' == letter)
            GetStr(&url->outfile, nextarg);
          else {
            url->outfile=NULL; /* leave it */
            url->flags |= GETOUT_USEREMOTE;
          }
          url->flags |= GETOUT_OUTFILE;
        }
      }
      break;
    case 'P':
      /* This makes the FTP sessions use PORT instead of PASV */
      /* use <eth0> or <192.168.10.10> style addresses. Anything except
         this will make us try to get the "default" address.
         NOTE: this is a changed behaviour since the released 4.1!
         */
      GetStr(&config->ftpport, nextarg);
      break;
    case 'p':
      /* proxy tunnel for non-http protocols */
      config->proxytunnel ^= TRUE;
      break;

    case 'q': /* if used first, already taken care of, we do it like
                 this so we don't cause an error! */
      break;
    case 'Q':
      /* QUOTE command to send to FTP server */
      err = PARAM_OK;
      switch(nextarg[0]) {
      case '-':
        /* prefixed with a dash makes it a POST TRANSFER one */
        nextarg++;
        err = add2list(&config->postquote, nextarg);
        break;
      case '+':
        /* prefixed with a plus makes it a just-before-transfer one */
        nextarg++;
        err = add2list(&config->prequote, nextarg);
        break;
      default:
        err = add2list(&config->quote, nextarg);
        break;
      }
      if(err)
        return err;
      break;
    case 'r':
      /* byte range requested */
      GetStr(&config->range, nextarg);
      break;
    case 'R':
      /* use remote file's time */
      config->remote_time ^= TRUE;
      break;
    case 's':
      /* don't show progress meter, don't show errors : */
      config->conf |= (CONF_MUTE|CONF_NOPROGRESS);
      config->showerror ^= TRUE; /* toggle off */
      break;
    case 'S':
      /* show errors */
      config->showerror ^= TRUE; /* toggle on if used with -s */
      break;
    case 't':
      /* Telnet options */
      err = add2list(&config->telnet_options, nextarg);
      if(err)
        return err;
      break;
    case 'T':
      /* we are uploading */
      {
        struct getout *url;
        if(config->url_out || (config->url_out=config->url_list)) {
          /* there's a node here, if it already is filled-in continue to find
             an "empty" node */
          while(config->url_out && (config->url_out->flags&GETOUT_UPLOAD))
            config->url_out = config->url_out->next;
        }

        /* now there might or might not be an available node to fill in! */

        if(config->url_out)
          /* existing node */
          url = config->url_out;
        else
          /* there was no free node, create one! */
          url=new_getout(config);

        if(url) {
          url->flags |= GETOUT_UPLOAD; /* mark -T used */
          if(!*nextarg)
            url->flags |= GETOUT_NOUPLOAD;
          else {
            /* "-" equals stdin, but keep the string around for now */
            GetStr(&url->infile, nextarg);
          }
        }
      }
      break;
    case 'u':
      /* user:password  */
      GetStr(&config->userpwd, nextarg);
      cleanarg(nextarg);
      checkpasswd("host", &config->userpwd);
      break;
    case 'U':
      /* Proxy user:password  */
      GetStr(&config->proxyuserpwd, nextarg);
      cleanarg(nextarg);
      checkpasswd("proxy", &config->proxyuserpwd);
      break;
    case 'v':
      config->conf ^= CONF_VERBOSE; /* talk a lot */
      break;
    case 'V':
    {
      const char **proto;

      printf(CURL_ID "%s\n", curl_version());
      if (curlinfo->protocols) {
        printf("Protocols: ");
        for (proto=curlinfo->protocols; *proto; ++proto) {
          printf("%s ", *proto);
        }
        puts(""); /* newline */
      }
      if(curlinfo->features) {
        unsigned int i;
        struct feat {
          const char *name;
          int bitmask;
        };
        static const struct feat feats[] = {
          {"AsynchDNS", CURL_VERSION_ASYNCHDNS},
          {"Debug", CURL_VERSION_DEBUG},
          {"GSS-Negotiate", CURL_VERSION_GSSNEGOTIATE},
          {"IDN", CURL_VERSION_IDN},
          {"IPv6", CURL_VERSION_IPV6},
          {"Largefile", CURL_VERSION_LARGEFILE},
          {"NTLM", CURL_VERSION_NTLM},
          {"SPNEGO", CURL_VERSION_SPNEGO},
          {"SSL",  CURL_VERSION_SSL},
          {"krb4", CURL_VERSION_KERBEROS4},
          {"libz", CURL_VERSION_LIBZ}
        };
        printf("Features: ");
        for(i=0; i<sizeof(feats)/sizeof(feats[0]); i++) {
          if(curlinfo->features & feats[i].bitmask)
            printf("%s ", feats[i].name);
        }
        puts(""); /* newline */
      }
    }
    return PARAM_HELP_REQUESTED;
    case 'w':
      /* get the output string */
      if('@' == *nextarg) {
        /* the data begins with a '@' letter, it means that a file name
           or - (stdin) follows */
        FILE *file;
        nextarg++; /* pass the @ */
        if(curlx_strequal("-", nextarg))
          file = stdin;
        else
          file = fopen(nextarg, "r");
        config->writeout = file2string(file);
        if(file && (file != stdin))
          fclose(file);
      }
      else
        GetStr(&config->writeout, nextarg);
      break;
    case 'x':
      /* proxy */
      GetStr(&config->proxy, nextarg);
      break;
    case 'X':
      /* set custom request */
      GetStr(&config->customrequest, nextarg);
      break;
    case 'y':
      /* low speed time */
      if(str2num(&config->low_speed_time, nextarg))
        return PARAM_BAD_NUMERIC;
      if(!config->low_speed_limit)
        config->low_speed_limit = 1;
      break;
    case 'Y':
      /* low speed limit */
      if(str2num(&config->low_speed_limit, nextarg))
        return PARAM_BAD_NUMERIC;
      if(!config->low_speed_time)
        config->low_speed_time=30;
      break;
    case 'z': /* time condition coming up */
      switch(*nextarg) {
      case '+':
        nextarg++;
      default:
        /* If-Modified-Since: (section 14.28 in RFC2068) */
        config->timecond = CURL_TIMECOND_IFMODSINCE;
        break;
      case '-':
        /* If-Unmodified-Since:  (section 14.24 in RFC2068) */
        config->timecond = CURL_TIMECOND_IFUNMODSINCE;
        nextarg++;
        break;
      case '=':
        /* Last-Modified:  (section 14.29 in RFC2068) */
        config->timecond = CURL_TIMECOND_LASTMOD;
        nextarg++;
        break;
      }
      now=time(NULL);
      config->condtime=curl_getdate(nextarg, &now);
      if(-1 == (int)config->condtime) {
        /* now let's see if it is a file name to get the time from instead! */
        struct_stat statbuf;
        if(-1 == stat(nextarg, &statbuf)) {
          /* failed, remove time condition */
          config->timecond = CURL_TIMECOND_NONE;
        }
        else {
          /* pull the time out from the file */
          config->condtime = statbuf.st_mtime;
        }
      }
      break;
    default: /* unknown flag */
      return PARAM_OPTION_UNKNOWN;
    }
    hit = -1;

  } while(!longopt && !singleopt && *++parse && !*usedarg);

  return PARAM_OK;
}


static void parseconfig(const char *filename,
                        struct Configurable *config)
{
  int res;
  FILE *file;
  char filebuffer[512];
  bool usedarg;
  char *home;

  if(!filename || !*filename) {
    /* NULL or no file name attempts to load .curlrc from the homedir! */

#define CURLRC DOT_CHAR "curlrc"

#ifndef AMIGA
    filename = CURLRC;   /* sensible default */
    home = homedir();    /* portable homedir finder */
    if(home) {
      if(strlen(home)<(sizeof(filebuffer)-strlen(CURLRC))) {
        snprintf(filebuffer, sizeof(filebuffer),
                 "%s%s%s", home, DIR_CHAR, CURLRC);

        filename = filebuffer;
      }
      free(home); /* we've used it, now free it */
    }

# else /* AmigaOS */
  /* On AmigaOS all the config files are into env:
   */
  filename = "ENV:" CURLRC;

#endif
  }

  if(strcmp(filename,"-"))
    file = fopen(filename, "r");
  else
    file = stdin;

  if(file) {
    char *line;
    char *aline;
    char *option;
    char *param;
    int lineno=0;
    bool alloced_param;

#define isseparator(x) (((x)=='=') || ((x) == ':'))

    while (NULL != (aline = my_get_line(file))) {
      lineno++;
      line = aline;
      alloced_param=FALSE;

      /* lines with # in the fist column is a comment! */
      while(*line && isspace((int)*line))
        line++;

      switch(*line) {
      case '#':
      case '/':
      case '\r':
      case '\n':
      case '*':
      case '\0':
        free(aline);
        continue;
      }

      /* the option keywords starts here */
      option = line;
      while(*line && !isspace((int)*line) && !isseparator(*line))
        line++;
      /* ... and has ended here */

      if(*line)
        *line++=0; /* zero terminate, we have a local copy of the data */

#ifdef DEBUG_CONFIG
      fprintf(stderr, "GOT: %s\n", option);
#endif

      /* pass spaces and separator(s) */
      while(*line && (isspace((int)*line) || isseparator(*line)))
        line++;

      /* the parameter starts here (unless quoted) */
      if(*line == '\"') {
        char *ptr;
        /* quoted parameter, do the qoute dance */
        line++;
        param=strdup(line); /* parameter */
        alloced_param=TRUE;

        ptr=param;
        while(*line && (*line != '\"')) {
          if(*line == '\\') {
            char out;
            line++;

            /* default is to output the letter after the backslah */
            switch(out = *line) {
            case '\0':
              continue; /* this'll break out of the loop */
            case 't':
              out='\t';
              break;
            case 'n':
              out='\n';
              break;
            case 'r':
              out='\r';
              break;
            case 'v':
              out='\v';
              break;
            }
            *ptr++=out;
            line++;
          }
          else
            *ptr++=*line++;
        }
        *ptr=0; /* always zero terminate */

      }
      else {
        param=line; /* parameter starts here */
        while(*line && !isspace((int)*line))
          line++;
        *line=0; /* zero terminate */
      }

      if (param && !*param) {
        /* do this so getparameter can check for required parameters.
           Otherwise it always thinks there's a parameter. */
        if (alloced_param)
          free(param);
        param = NULL;
      }

#ifdef DEBUG_CONFIG
      fprintf(stderr, "PARAM: \"%s\"\n",(param ? param : "(null)"));
#endif
      res = getparameter(option, param, &usedarg, config);

      if (param && *param && !usedarg)
        /* we passed in a parameter that wasn't used! */
        res = PARAM_GOT_EXTRA_PARAMETER;

      if(res != PARAM_OK) {
        /* the help request isn't really an error */
        if(!strcmp(filename, "-")) {
          filename=(char *)"<stdin>";
        }
        if(PARAM_HELP_REQUESTED != res) {
          const char *reason = param2text(res);
          fprintf(stderr, "%s:%d: warning: '%s' %s\n",
                  filename, lineno, option, reason);
        }
      }

      if(alloced_param)
      {
        free(param);
        param = NULL;
      }

      free(aline);
    }
    if(file != stdin)
      fclose(file);
  }
}

static void go_sleep(long ms)
{
#ifdef HAVE_POLL_FINE
  /* portable subsecond "sleep" */
  poll((void *)0, 0, (int)ms);
#else
  /* systems without poll() need other solutions */

#ifdef WIN32
  /* Windows offers a millisecond sleep */
  Sleep(ms);
#elif defined(__MSDOS__)
  delay(ms);
#else
  /* Other systems must use select() for this */
  struct timeval timeout;

  timeout.tv_sec = ms/1000;
  ms = ms%1000;
  timeout.tv_usec = ms * 1000;

  select(0, NULL,  NULL, NULL, &timeout);
#endif

#endif
}

struct OutStruct {
  char *filename;
  FILE *stream;
  struct Configurable *config;
  curl_off_t bytes; /* amount written so far */
  curl_off_t init;  /* original size (non-zero when appending) */
};

static int my_fwrite(void *buffer, size_t sz, size_t nmemb, void *stream)
{
  int rc;
  struct OutStruct *out=(struct OutStruct *)stream;
  struct Configurable *config = out->config;
  curl_off_t size = (curl_off_t)(sz * nmemb); /* typecast to prevent
                                                 warnings when converting from
                                                 unsigned to signed */
  if(out && !out->stream) {
    /* open file for writing */
    out->stream=fopen(out->filename, "wb");
    if(!out->stream)
      return -1; /* failure */
  }

  if(config->recvpersecond) {
    /*
     * We know when we received data the previous time. We know how much data
     * we get now. Make sure that this is not faster than we are told to run.
     * If we're faster, sleep a while *before* doing the fwrite() here.
     */

    struct timeval now;
    long timediff;
    long sleep_time;

    static curl_off_t addit = 0;

    now = curlx_tvnow();
    timediff = curlx_tvdiff(now, config->lastrecvtime); /* milliseconds */

    if((config->recvpersecond > CURL_MAX_WRITE_SIZE) && (timediff < 100) ) {
      /* If we allow a rather speedy transfer, add this amount for later
       * checking. Also, do not modify the lastrecvtime as we will use a
       * longer scope due to this addition.  We wait for at least 100 ms to
       * pass to get better values to do better math for the sleep. */
      addit += size;
    }
    else {
      size += addit; /* add up the possibly added bonus rounds from the
                        zero timediff calls */
      addit = 0; /* clear the addition pool */

      if( size*1000 > config->recvpersecond*timediff) {
        /* figure out how many milliseconds to rest */
        sleep_time = (long)(size*1000/config->recvpersecond - timediff);

        /*
         * Make sure we don't sleep for so long that we trigger the speed
         * limit.  This won't limit the bandwidth quite the way we've been
         * asked to, but at least the transfer has a chance.
         */
        if (config->low_speed_time > 0)
          sleep_time = MIN(sleep_time,(config->low_speed_time * 1000) / 2);

        if(sleep_time > 0) {
          go_sleep(sleep_time);
          now = curlx_tvnow();
        }
      }
      config->lastrecvtime = now;
    }
  }

  rc = fwrite(buffer, sz, nmemb, out->stream);

  if((int)(sz * nmemb) == rc) {
    /* we added this amount of data to the output */
    out->bytes += (sz * nmemb);
  }

  if(config->nobuffer)
    /* disable output buffering */
    fflush(out->stream);

  return rc;
}

struct InStruct {
  FILE *stream;
  struct Configurable *config;
};

static curlioerr my_ioctl(CURL *handle, curliocmd cmd, void *userp)
{
  struct InStruct *in=(struct InStruct *)userp;
  (void)handle; /* not used in here */

  switch(cmd) {
  case CURLIOCMD_RESTARTREAD:
    /* mr libcurl kindly asks as to rewind the read data stream to start */
    if(-1 == fseek(in->stream, 0, SEEK_SET))
      /* couldn't rewind, the reason is in errno but errno is just not
         portable enough and we don't actually care that much why we failed. */
      return CURLIOE_FAILRESTART;

    break;

  default: /* ignore unknown commands */
    return CURLIOE_UNKNOWNCMD;
  }
  return CURLIOE_OK;
}

static int my_fread(void *buffer, size_t sz, size_t nmemb, void *userp)
{
  int rc;
  struct InStruct *in=(struct InStruct *)userp;
  struct Configurable *config = in->config;
  curl_off_t size = (curl_off_t)(sz * nmemb);  /* typecast to prevent warnings
                                                  when converting from
                                                  unsigned to signed */

  if(config->sendpersecond) {
    /*
     * We know when we sent data the previous time. We know how much data
     * we sent. Make sure that this was not faster than we are told to run.
     * If we're faster, sleep a while *before* doing the fread() here.
     * Also, make no larger fread() than should be sent this second!
     */

    struct timeval now;
    long timediff;
    long sleep_time;

    static curl_off_t addit = 0;

    now = curlx_tvnow();
    timediff = curlx_tvdiff(now, config->lastsendtime); /* milliseconds */

    if((config->sendpersecond > CURL_MAX_WRITE_SIZE) &&
       (timediff < 100)) {
      /*
       * We allow very fast transfers, then allow at least 100 ms between
       * each sleeping mile-stone to create more accurate long-term rates.
       */
      addit += size;
    }
    else {
      /* If 'addit' is non-zero, it contains the total amount of bytes
         uploaded during the last 'timediff' milliseconds. If it is zero,
         we use the stored previous size. */
      curl_off_t xfered = addit?addit:(curl_off_t)config->lastsendsize;
      addit = 0; /* clear it for the next round */

      if( xfered*1000 > config->sendpersecond*timediff) {
        /* figure out how many milliseconds to rest */
        sleep_time = (long)(xfered*1000/config->sendpersecond - timediff);
        if(sleep_time > 0) {
          go_sleep (sleep_time);
          now = curlx_tvnow();
        }
      }
      config->lastsendtime = now;

      if(size > config->sendpersecond) {
        /* lower the size to actually read */
        nmemb = (size_t)config->sendpersecond;
        sz = 1;
      }
    }

    config->lastsendsize = sz*nmemb;
  }

  rc = fread(buffer, sz, nmemb, in->stream);
#if 0
  fprintf(stderr, "CALLBACK returning %d bytes data\n", (int)rc);
#endif
  return rc;
}

struct ProgressData {
  int calls;
  curl_off_t prev;
  int width;
  FILE *out; /* where to write everything to */
  curl_off_t initial_size;
};

static int myprogress (void *clientp,
                       double dltotal,
                       double dlnow,
                       double ultotal,
                       double ulnow)
{
  /* The original progress-bar source code was written for curl by Lars Aas,
     and this new edition inherits some of his concepts. */

  char line[256];
  char outline[256];
  char format[40];
  double frac;
  double percent;
  int barwidth;
  int num;
  int i;

  struct ProgressData *bar = (struct ProgressData *)clientp;
  curl_off_t total = (curl_off_t)dltotal + (curl_off_t)ultotal +
    bar->initial_size; /* expected transfer size */
  curl_off_t point = (curl_off_t)dlnow + (curl_off_t)ulnow +
    bar->initial_size; /* we've come this far */

  bar->calls++; /* simply count invokes */

  if(total < 1) {
    curl_off_t prevblock = bar->prev / 1024;
    curl_off_t thisblock = point / 1024;
    while ( thisblock > prevblock ) {
      fprintf( bar->out, "#" );
      prevblock++;
    }
  }
  else {
    frac = (double)point / (double)total;
    percent = frac * 100.0f;
    barwidth = bar->width - 7;
    num = (int) (((double)barwidth) * frac);
    i = 0;
    for ( i = 0; i < num; i++ ) {
      line[i] = '#';
    }
    line[i] = '\0';
    snprintf( format, sizeof(format), "%%-%ds %%5.1f%%%%", barwidth );
    snprintf( outline, sizeof(outline), format, line, percent );
    fprintf( bar->out, "\r%s", outline );
  }
  fflush(bar->out);
  bar->prev = point;

  return 0;
}

static
void progressbarinit(struct ProgressData *bar,
                     struct Configurable *config)
{
#ifdef __EMX__
  /* 20000318 mgs */
  int scr_size [2];
#endif
  char *colp;

  memset(bar, 0, sizeof(struct ProgressData));

  /* pass this through to progress function so
   * it can display progress towards total file
   * not just the part that's left. (21-may-03, dbyron) */
  if (config->use_resume)
    bar->initial_size = config->resume_from;

/* TODO: get terminal width through ansi escapes or something similar.
         try to update width when xterm is resized... - 19990617 larsa */
#ifndef __EMX__
  /* 20000318 mgs
   * OS/2 users most likely won't have this env var set, and besides that
   * we're using our own way to determine screen width */
  colp = curlx_getenv("COLUMNS");
  if (colp != NULL) {
    bar->width = atoi(colp);
    curl_free(colp);
  }
  else
    bar->width = 79;
#else
  /* 20000318 mgs
   * We use this emx library call to get the screen width, and subtract
   * one from what we got in order to avoid a problem with the cursor
   * advancing to the next line if we print a string that is as long as
   * the screen is wide. */

  _scrsize(scr_size);
  bar->width = scr_size[0] - 1;
#endif

  bar->out = config->errors;
}

static
void dump(const char *text,
          FILE *stream, unsigned char *ptr, size_t size,
          bool nohex)
{
  size_t i;
  size_t c;

  unsigned int width=0x10;

  if(nohex)
    /* without the hex output, we can fit more on screen */
    width = 0x40;

  fprintf(stream, "%s, %zd bytes (0x%zx)\n", text, size, size);

  for(i=0; i<size; i+= width) {

    fprintf(stream, "%04zx: ", i);

    if(!nohex) {
      /* hex not disabled, show it */
      for(c = 0; c < width; c++)
        if(i+c < size)
          fprintf(stream, "%02x ", ptr[i+c]);
        else
          fputs("   ", stream);
    }

    for(c = 0; (c < width) && (i+c < size); c++) {
      /* check for 0D0A; if found, skip past and start a new line of output */
      if (nohex && (i+c+1 < size) && ptr[i+c]==0x0D && ptr[i+c+1]==0x0A) {
        i+=(c+2-width);
        break;
      }
      fprintf(stream, "%c",
              (ptr[i+c]>=0x20) && (ptr[i+c]<0x80)?ptr[i+c]:'.');
      /* check again for 0D0A, to avoid an extra \n if it's at width */
      if (nohex && (i+c+2 < size) && ptr[i+c+1]==0x0D && ptr[i+c+2]==0x0A) {
        i+=(c+3-width);
        break;
      }
    }
    fputc('\n', stream); /* newline */
  }
  fflush(stream);
}

static
int my_trace(CURL *handle, curl_infotype type,
             unsigned char *data, size_t size,
             void *userp)
{
  struct Configurable *config = (struct Configurable *)userp;
  FILE *output=config->errors;
  const char *text;
  (void)handle; /* prevent compiler warning */

  if(!config->trace_stream) {
    /* open for append */
    if(curlx_strequal("-", config->trace_dump))
      config->trace_stream = stdout;
    else {
      config->trace_stream = fopen(config->trace_dump, "w");
      config->trace_fopened = TRUE;
    }
  }

  if(config->trace_stream)
    output = config->trace_stream;

  switch (type) {
  case CURLINFO_TEXT:
    fprintf(output, "== Info: %s", data);
  default: /* in case a new one is introduced to shock us */
    return 0;

  case CURLINFO_HEADER_OUT:
    text = "=> Send header";
    break;
  case CURLINFO_DATA_OUT:
    text = "=> Send data";
    break;
  case CURLINFO_HEADER_IN:
    text = "<= Recv header";
    break;
  case CURLINFO_DATA_IN:
    text = "<= Recv data";
    break;
  case CURLINFO_SSL_DATA_IN:
    text = "<= Recv SSL data";
    break;
  case CURLINFO_SSL_DATA_OUT:
    text = "<= Send SSL data";
    break;
  }

  dump(text, output, data, size, config->trace_ascii);
  return 0;
}

static void free_config_fields(struct Configurable *config)
{
  if(config->random_file)
    free(config->random_file);
  if(config->egd_file)
    free(config->egd_file);
  if(config->trace_dump)
    free(config->trace_dump);
  if(config->cipher_list)
    free(config->cipher_list);
  if(config->userpwd)
    free(config->userpwd);
  if(config->postfields)
    free(config->postfields);
  if(config->proxy)
    free(config->proxy);
  if(config->proxyuserpwd)
    free(config->proxyuserpwd);
  if(config->cookie)
    free(config->cookie);
  if(config->cookiefile)
    free(config->cookiefile);
  if(config->krb4level)
    free(config->krb4level);
  if(config->headerfile)
    free(config->headerfile);
  if(config->ftpport)
    free(config->ftpport);
  if(config->range)
    free(config->range);
  if(config->customrequest)
    free(config->customrequest);
  if(config->writeout)
    free(config->writeout);
  if(config->httppost)
    curl_formfree(config->httppost);
  if(config->cacert)
    free(config->cacert);
  if(config->capath)
    free(config->capath);
  if(config->cookiejar)
    free(config->cookiejar);

  curl_slist_free_all(config->quote); /* checks for config->quote == NULL */
  curl_slist_free_all(config->postquote); /*  */
  curl_slist_free_all(config->headers); /*  */
}

#if defined(WIN32) && !defined(__CYGWIN32__)

/* Function to find CACert bundle on a Win32 platform using SearchPath.
 * (SearchPath is defined in windows.h, which is #included into libcurl)
 * (Use the ASCII version instead of the unicode one!)
 * The order of the directories it searches is:
 *  1. application's directory
 *  2. current working directory
 *  3. Windows System directory (e.g. C:\windows\system32)
 *  4. Windows Directory (e.g. C:\windows)
 *  5. all directories along %PATH%
 */
static void FindWin32CACert(struct Configurable *config,
                            const char *bundle_file)
{
  /* only check for cert file if "we" support SSL */
  if(curlinfo->features & CURL_VERSION_SSL) {
    DWORD buflen;
    char *ptr = NULL;
    char *retval = (char *) malloc(sizeof (TCHAR) * (MAX_PATH + 1));
    if (!retval)
      return;
    retval[0] = '\0';
    buflen = SearchPathA(NULL, bundle_file, NULL, MAX_PATH+2, retval, &ptr);
    if (buflen > 0) {
      GetStr(&config->cacert, retval);
    }
    free(retval);
  }
}

#endif

#define RETRY_SLEEP_DEFAULT 1000  /* ms */
#define RETRY_SLEEP_MAX     600000 /* ms == 10 minutes */

static int
operate(struct Configurable *config, int argc, char *argv[])
{
  char errorbuffer[CURL_ERROR_SIZE];
  char useragent[128]; /* buah, we don't want a larger default user agent */
  struct ProgressData progressbar;
  struct getout *urlnode;
  struct getout *nextnode;

  struct OutStruct outs;
  struct OutStruct heads;
  struct InStruct input;

  char *url = NULL;

  URLGlob *urls=NULL;
  URLGlob *inglob=NULL;
  int urlnum;
  int infilenum;
  char *outfiles;
  char *infiles; /* might a glob pattern */
  char *uploadfile=NULL; /* a single file, never a glob */

  int separator = 0;

  FILE *infd = stdin;
  bool infdfopen;
  FILE *headerfilep = NULL;
  char *urlbuffer=NULL;
  curl_off_t uploadfilesize; /* -1 means unknown */
  bool stillflags=TRUE;

  bool allocuseragent=FALSE;

  char *httpgetfields=NULL;

  CURL *curl;
  int res = 0;
  int i;
  int up; /* upload file counter within a single upload glob */
  long retry_sleep_default = config->retry_delay?
    config->retry_delay*1000:RETRY_SLEEP_DEFAULT; /* ms */
  long retry_numretries;
  long retry_sleep = retry_sleep_default;
  long response;
  struct timeval retrystart;

  char *env;
#ifdef CURLDEBUG
  /* this sends all memory debug messages to a logfile named memdump */
  env = curlx_getenv("CURL_MEMDEBUG");
  if(env) {
    curl_free(env);
    curl_memdebug("memdump");
  }
  env = curlx_getenv("CURL_MEMLIMIT");
  if(env) {
    curl_memlimit(atoi(env));
    curl_free(env);
  }
#endif

  memset(&outs,0,sizeof(outs));

  /* we get libcurl info right away */
  curlinfo = curl_version_info(CURLVERSION_NOW);

  errorbuffer[0]=0; /* prevent junk from being output */

  /* setup proper locale from environment */
#ifdef HAVE_SETLOCALE
  setlocale(LC_ALL, "");
#endif

  /* inits */
  if (main_init() != CURLE_OK) {
    helpf("error initializing curl library\n");
    return CURLE_FAILED_INIT;
  }
  config->postfieldsize = -1;
  config->showerror=TRUE;
  config->conf=CONF_DEFAULT;
  config->use_httpget=FALSE;
  config->create_dirs=FALSE;
  config->lastrecvtime = curlx_tvnow();
  config->lastsendtime = curlx_tvnow();

  if(argc>1 &&
     (!curlx_strnequal("--", argv[1], 2) && (argv[1][0] == '-')) &&
     strchr(argv[1], 'q')) {
    /*
     * The first flag, that is not a verbose name, but a shortname
     * and it includes the 'q' flag!
     */
    ;
  }
  else {
    parseconfig(NULL, config);
  }

  if ((argc < 2)  && !config->url_list) {
    helpf(NULL);
    return CURLE_FAILED_INIT;
  }

  /* Parse options */
  for (i = 1; i < argc; i++) {
    if(stillflags &&
       ('-' == argv[i][0])) {
      char *nextarg;
      bool passarg;
      char *origopt=argv[i];

      char *flag = argv[i];

      if(curlx_strequal("--", argv[i]))
        /* this indicates the end of the flags and thus enables the
           following (URL) argument to start with -. */
        stillflags=FALSE;
      else {
        nextarg= (i < argc - 1)? argv[i+1]: NULL;

        res = getparameter(flag, nextarg, &passarg, config);
        if(res) {
          const char *reason = param2text(res);
          if(res != PARAM_HELP_REQUESTED)
            helpf("option %s: %s\n", origopt, reason);
          clean_getout(config);
          return CURLE_FAILED_INIT;
        }

        if(passarg) /* we're supposed to skip this */
          i++;
      }
    }
    else {
      bool used;
      /* just add the URL please */
      res = getparameter((char *)"--url", argv[i], &used, config);
      if(res)
        return res;
    }
  }

  if((!config->url_list || !config->url_list->url) && !config->list_engines) {
    clean_getout(config);
    helpf("no URL specified!\n");
    return CURLE_FAILED_INIT;
  }
  if(NULL == config->useragent) {
    /* set non-zero default values: */
    snprintf(useragent, sizeof(useragent),
             CURL_NAME "/" CURL_VERSION " (" OS ") " "%s", curl_version());
    config->useragent= useragent;
  }
  else
    allocuseragent = TRUE;

  /* On WIN32 (non-cygwin), we can't set the path to curl-ca-bundle.crt
   * at compile time. So we look here for the file in two ways:
   * 1: look at the environment variable CURL_CA_BUNDLE for a path
   * 2: if #1 isn't found, use the windows API function SearchPath()
   *    to find it along the app's path (includes app's dir and CWD)
   *
   * We support the environment variable thing for non-Windows platforms
   * too. Just for the sake of it.
   */
  if (!config->cacert &&
      !config->capath &&
      !config->insecure_ok) {
    env = curlx_getenv("CURL_CA_BUNDLE");
    if(env) {
      GetStr(&config->cacert, env);
      curl_free(env);
    }
#if defined(WIN32) && !defined(__CYGWIN32__)
    else
      FindWin32CACert(config, "curl-ca-bundle.crt");
#endif
  }

  if (config->postfields) {
    if (config->use_httpget) {
      /* Use the postfields data for a http get */
      httpgetfields = strdup(config->postfields);
      free(config->postfields);
      config->postfields = NULL;
      if(SetHTTPrequest((config->conf&CONF_NOBODY?HTTPREQ_HEAD:HTTPREQ_GET),
                        &config->httpreq)) {
        free(httpgetfields);
        return PARAM_BAD_USE;
      }
    }
    else {
      if(SetHTTPrequest(HTTPREQ_SIMPLEPOST, &config->httpreq))
        return PARAM_BAD_USE;
    }
  }

  /*
   * Get a curl handle to use for all forthcoming curl transfers.  Cleanup
   * when all transfers are done.
   */
  curl = curl_easy_init();
  if(!curl) {
    clean_getout(config);
    return CURLE_FAILED_INIT;
  }


  if (config->list_engines) {
    struct curl_slist *engines = NULL;

    curl_easy_getinfo(curl, CURLINFO_SSL_ENGINES, &engines);
    list_engines(engines);
    curl_slist_free_all(engines);
    res = CURLE_OK;
    goto quit_curl;
  }

  /* After this point, we should call curl_easy_cleanup() if we decide to bail
   * out from this function! */

  urlnode = config->url_list;

  if(config->headerfile) {
    /* open file for output: */
    if(strcmp(config->headerfile,"-")) {
      heads.filename = config->headerfile;
      headerfilep=NULL;
    }
    else
      headerfilep=stdout;
    heads.stream = headerfilep;
    heads.config = config;
  }

  /* loop through the list of given URLs */
  while(urlnode) {
    char *dourl;

    /* get the full URL (it might be NULL) */
    dourl=urlnode->url;

    url = dourl;

    if(NULL == url) {
      /* This node had no URL, skip it and continue to the next */
      if(urlnode->outfile)
        free(urlnode->outfile);

      /* move on to the next URL */
      nextnode=urlnode->next;
      free(urlnode); /* free the node */
      urlnode = nextnode;
      continue; /* next please */
    }

    /* default output stream is stdout */
    outs.stream = stdout;
    outs.config = config;
    outs.bytes = 0; /* nothing written yet */

    /* save outfile pattern before expansion */
    outfiles = urlnode->outfile?strdup(urlnode->outfile):NULL;

    infiles = urlnode->infile;

    if(!config->globoff && infiles) {
      /* Unless explicitly shut off */
      res = glob_url(&inglob, infiles, &infilenum,
                     config->showerror?
                     (config->errors?config->errors:stderr):NULL);
      if(res != CURLE_OK) {
        clean_getout(config);
        if(outfiles)
          free(outfiles);
        break;
      }
    }

    /* Here's the loop for uploading multiple files within the same
       single globbed string. If no upload, we enter the loop once anyway. */
    for(up = 0;
        (!up && !infiles) ||
          (uploadfile = inglob?
           glob_next_url(inglob):
           (!up?strdup(infiles):NULL));
        up++) {
      uploadfilesize=-1;

      if(!config->globoff) {
        /* Unless explicitly shut off, we expand '{...}' and '[...]'
           expressions and return total number of URLs in pattern set */
        res = glob_url(&urls, dourl, &urlnum,
                       config->showerror?
                       (config->errors?config->errors:stderr):NULL);
        if(res != CURLE_OK) {
          break;
        }
      }
      else
        urlnum = 1; /* without globbing, this is a single URL */

      /* if multiple files extracted to stdout, insert separators! */
      separator= ((!outfiles || curlx_strequal(outfiles, "-")) && urlnum > 1);

      /* Here's looping around each globbed URL */
      for(i = 0;
          (url = urls?glob_next_url(urls):(i?NULL:strdup(url)));
          i++) {
        char *outfile;
        outfile = outfiles?strdup(outfiles):NULL;

        if((urlnode->flags&GETOUT_USEREMOTE) ||
           (outfile && !curlx_strequal("-", outfile)) ) {

          /*
           * We have specified a file name to store the result in, or we have
           * decided we want to use the remote file name.
           */

          if(!outfile) {
            /* Find and get the remote file name */
            char * pc =strstr(url, "://");
            if(pc)
              pc+=3;
            else
              pc=url;
            pc = strrchr(pc, '/');

            if(pc) {
              /* duplicate the string beyond the slash */
              pc++;
              outfile = *pc ? strdup(pc): NULL;
            }
            if(!outfile || !*outfile) {
              helpf("Remote file name has no length!\n");
              res = CURLE_WRITE_ERROR;
              free(url);
              break;
            }
#if defined(__DJGPP__)
            {
              /* This is for DOS, and then we do some major replacing of
                 bad characters in the file name before using it */
              char file1 [PATH_MAX];

              strcpy(file1, msdosify(outfile));
              free (outfile);
              outfile = strdup (rename_if_dos_device_name(file1));
            }
#endif /* __DJGPP__ */
          }
          else if(urls) {
            /* fill '#1' ... '#9' terms from URL pattern */
            char *storefile = outfile;
            outfile = glob_match_url(storefile, urls);
            free(storefile);
            if(!outfile) {
              /* bad globbing */
              fprintf(stderr, "bad output glob!\n");
              free(url);
              res = CURLE_FAILED_INIT;
              break;
            }
          }

          /* Create the directory hierarchy, if not pre-existant to a multiple
             file output call */

          if(config->create_dirs &&
             (-1 == create_dir_hierarchy(outfile)))
            return CURLE_WRITE_ERROR;

          if(config->resume_from_current) {
            /* We're told to continue from where we are now. Get the
               size of the file as it is now and open it for append instead */

            struct_stat fileinfo;

            /* VMS -- Danger, the filesize is only valid for stream files */
            if(0 == stat(outfile, &fileinfo))
              /* set offset to current file size: */
              config->resume_from = fileinfo.st_size;
            else
              /* let offset be 0 */
              config->resume_from = 0;
          }

          outs.filename = outfile;

          if(config->resume_from) {
            outs.init = config->resume_from;
            /* open file for output: */
            outs.stream=(FILE *) fopen(outfile, config->resume_from?"ab":"wb");
            if (!outs.stream) {
              helpf("Can't open '%s'!\n", outfile);
              return CURLE_WRITE_ERROR;
            }
          }
          else {
            outs.stream = NULL; /* open when needed */
          }
        }
        infdfopen=FALSE;
        if(uploadfile && !curlx_strequal(uploadfile, "-")) {
          /*
           * We have specified a file to upload and it isn't "-".
           */
          struct_stat fileinfo;

          /* If no file name part is given in the URL, we add this file name */
          char *ptr=strstr(url, "://");
          if(ptr)
            ptr+=3;
          else
            ptr=url;
          ptr = strrchr(ptr, '/');
          if(!ptr || !strlen(++ptr)) {
            /* The URL has no file name part, add the local file name. In order
               to be able to do so, we have to create a new URL in another
               buffer.*/

            /* We only want the part of the local path that is on the right
               side of the rightmost slash and backslash. */
            char *filep = strrchr(uploadfile, '/');
            char *file2 = strrchr(filep?filep:uploadfile, '\\');

            if(file2)
              filep = file2+1;
            else if(filep)
              filep++;
            else
              filep = uploadfile;

            /* URL encode the file name */
            filep = curl_escape(filep, 0 /* use strlen */);

            if(filep) {

              urlbuffer=(char *)malloc(strlen(url) + strlen(filep) + 3);
              if(!urlbuffer) {
                helpf("out of memory\n");
                return CURLE_OUT_OF_MEMORY;
              }
              if(ptr)
                /* there is a trailing slash on the URL */
                sprintf(urlbuffer, "%s%s", url, filep);
              else
                /* thers is no trailing slash on the URL */
                sprintf(urlbuffer, "%s/%s", url, filep);

              curl_free(filep);

              free(url);
              url = urlbuffer; /* use our new URL instead! */
            }
          }
          /* VMS Note:
           *
           * Reading binary from files can be a problem...  Only FIXED, VAR
           * etc WITHOUT implied CC will work Others need a \n appended to a
           * line
           *
           * - Stat gives a size but this is UNRELIABLE in VMS As a f.e. a
           * fixed file with implied CC needs to have a byte added for every
           * record processed, this can by derived from Filesize & recordsize
           * for VARiable record files the records need to be counted!  for
           * every record add 1 for linefeed and subtract 2 for the record
           * header for VARIABLE header files only the bare record data needs
           * to be considered with one appended if implied CC
           */

          infd=(FILE *) fopen(uploadfile, "rb");
          if (!infd || stat(uploadfile, &fileinfo)) {
            helpf("Can't open '%s'!\n", uploadfile);
            return CURLE_READ_ERROR;
          }
          infdfopen=TRUE;
          uploadfilesize=fileinfo.st_size;

        }
        else if(uploadfile && curlx_strequal(uploadfile, "-")) {
          infd = stdin;
        }

        if(uploadfile && config->resume_from_current)
          config->resume_from = -1; /* -1 will then force get-it-yourself */

        if(outs.stream && isatty(fileno(outs.stream)))
          /* we send the output to a tty, therefore we switch off the progress
             meter */
          config->conf |= CONF_NOPROGRESS;

        if (urlnum > 1 && !(config->conf&CONF_MUTE)) {
          fprintf(stderr, "\n[%d/%d]: %s --> %s\n",
                  i+1, urlnum, url, outfile ? outfile : "<stdout>");
          if (separator)
            printf("%s%s\n", CURLseparator, url);
        }
        if (httpgetfields) {
          /* Find out whether the url contains a file name */
          const char *pc =strstr(url, "://");
          char sep='?';
          if(pc)
            pc+=3;
          else
            pc=url;

          pc = strrchr(pc, '/'); /* check for a slash */

          if(pc) {
            /* there is a slash present in the URL */

            if(strchr(pc, '?'))
              /* Ouch, there's already a question mark in the URL string, we
                 then append the data with an ampersand separator instead! */
              sep='&';
          }
          /*
           * Then append ? followed by the get fields to the url.
           */
          urlbuffer=(char *)malloc(strlen(url) + strlen(httpgetfields) + 2);
          if(!urlbuffer) {
            helpf("out of memory\n");
            return CURLE_OUT_OF_MEMORY;
          }
          if (pc)
            sprintf(urlbuffer, "%s%c%s", url, sep, httpgetfields);
          else
            /* Append  / before the ? to create a well-formed url
               if the url contains a hostname only
            */
            sprintf(urlbuffer, "%s/?%s", url, httpgetfields);

          free(url); /* free previous URL */
          url = urlbuffer; /* use our new URL instead! */
        }

        if(!config->errors)
          config->errors = stderr;

#ifdef O_BINARY
        if(!outfile && !(config->conf & CONF_GETTEXT)) {
          /* We get the output to stdout and we have not got the ASCII/text flag,
             then set stdout to be binary */
          setmode( fileno(stdout), O_BINARY );
        }
#endif

        if(1 == config->tcp_nodelay)
          curl_easy_setopt(curl, CURLOPT_TCP_NODELAY, 1);

        /* where to store */
        curl_easy_setopt(curl, CURLOPT_WRITEDATA, (FILE *)&outs);
        /* what call to write */
        curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, my_fwrite);

        /* for uploads */
        input.stream = infd;
        input.config = config;
        curl_easy_setopt(curl, CURLOPT_READDATA, &input);
        /* what call to read */
        curl_easy_setopt(curl, CURLOPT_READFUNCTION, my_fread);

        /* libcurl 7.12.3 business: */
        curl_easy_setopt(curl, CURLOPT_IOCTLDATA, &input);
        curl_easy_setopt(curl, CURLOPT_IOCTLFUNCTION, my_ioctl);

        if(config->recvpersecond) {
          /* tell libcurl to use a smaller sized buffer as it allows us to
             make better sleeps! 7.9.9 stuff! */
          curl_easy_setopt(curl, CURLOPT_BUFFERSIZE, config->recvpersecond);
        }

        /* size of uploaded file: */
        curl_easy_setopt(curl, CURLOPT_INFILESIZE_LARGE, uploadfilesize);
        curl_easy_setopt(curl, CURLOPT_URL, url);     /* what to fetch */
        curl_easy_setopt(curl, CURLOPT_PROXY, config->proxy); /* proxy to use */
        curl_easy_setopt(curl, CURLOPT_HEADER, config->conf&CONF_HEADER);
        curl_easy_setopt(curl, CURLOPT_NOPROGRESS, config->conf&CONF_NOPROGRESS);
        curl_easy_setopt(curl, CURLOPT_NOBODY, config->conf&CONF_NOBODY);
        curl_easy_setopt(curl, CURLOPT_FAILONERROR,
                         config->conf&CONF_FAILONERROR);
        curl_easy_setopt(curl, CURLOPT_UPLOAD, uploadfile?TRUE:FALSE);
        curl_easy_setopt(curl, CURLOPT_FTPLISTONLY,
                         config->conf&CONF_FTPLISTONLY);
        curl_easy_setopt(curl, CURLOPT_FTPAPPEND, config->conf&CONF_FTPAPPEND);

        if (config->conf&CONF_NETRC_OPT)
          curl_easy_setopt(curl, CURLOPT_NETRC, CURL_NETRC_OPTIONAL);
        else if (config->conf&CONF_NETRC)
          curl_easy_setopt(curl, CURLOPT_NETRC, CURL_NETRC_REQUIRED);
        else
          curl_easy_setopt(curl, CURLOPT_NETRC, CURL_NETRC_IGNORED);

        curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION,
                         config->conf&CONF_FOLLOWLOCATION);
        curl_easy_setopt(curl, CURLOPT_UNRESTRICTED_AUTH,
                         config->conf&CONF_UNRESTRICTED_AUTH);
        curl_easy_setopt(curl, CURLOPT_TRANSFERTEXT, config->conf&CONF_GETTEXT);
        curl_easy_setopt(curl, CURLOPT_USERPWD, config->userpwd);
        curl_easy_setopt(curl, CURLOPT_PROXYUSERPWD, config->proxyuserpwd);
        curl_easy_setopt(curl, CURLOPT_RANGE, config->range);
        curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, errorbuffer);
        curl_easy_setopt(curl, CURLOPT_TIMEOUT, config->timeout);

        switch(config->httpreq) {
        case HTTPREQ_SIMPLEPOST:
          curl_easy_setopt(curl, CURLOPT_POSTFIELDS, config->postfields);
          curl_easy_setopt(curl, CURLOPT_POSTFIELDSIZE, config->postfieldsize);
          break;
        case HTTPREQ_POST:
          curl_easy_setopt(curl, CURLOPT_HTTPPOST, config->httppost);
          break;
        default:
          break;
        }
        curl_easy_setopt(curl, CURLOPT_REFERER, config->referer);
        curl_easy_setopt(curl, CURLOPT_AUTOREFERER,
                         config->conf&CONF_AUTO_REFERER);
        curl_easy_setopt(curl, CURLOPT_USERAGENT, config->useragent);
        curl_easy_setopt(curl, CURLOPT_FTPPORT, config->ftpport);
        curl_easy_setopt(curl, CURLOPT_LOW_SPEED_LIMIT, config->low_speed_limit);
        curl_easy_setopt(curl, CURLOPT_LOW_SPEED_TIME, config->low_speed_time);
        curl_easy_setopt(curl, CURLOPT_RESUME_FROM_LARGE,
                         config->use_resume?config->resume_from:0);
        curl_easy_setopt(curl, CURLOPT_COOKIE, config->cookie);
        curl_easy_setopt(curl, CURLOPT_HTTPHEADER, config->headers);
        curl_easy_setopt(curl, CURLOPT_SSLCERT, config->cert);
        curl_easy_setopt(curl, CURLOPT_SSLCERTTYPE, config->cert_type);
        curl_easy_setopt(curl, CURLOPT_SSLKEY, config->key);
        curl_easy_setopt(curl, CURLOPT_SSLKEYTYPE, config->key_type);
        curl_easy_setopt(curl, CURLOPT_SSLKEYPASSWD, config->key_passwd);

        /* default to strict verifyhost */
        curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 2);
        if(config->cacert || config->capath) {
          if (config->cacert)
            curl_easy_setopt(curl, CURLOPT_CAINFO, config->cacert);

          if (config->capath)
            curl_easy_setopt(curl, CURLOPT_CAPATH, config->capath);
          curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, TRUE);
        }
        if(config->insecure_ok) {
          /* new stuff needed for libcurl 7.10 */
          curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, FALSE);
          curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 1);
        }

        if((config->conf&CONF_NOBODY) ||
           config->remote_time) {
          /* no body or use remote time */
          curl_easy_setopt(curl, CURLOPT_FILETIME, TRUE);
        }

        if (config->maxredirs)
          curl_easy_setopt(curl, CURLOPT_MAXREDIRS, config->maxredirs);
        else
          curl_easy_setopt(curl, CURLOPT_MAXREDIRS, DEFAULT_MAXREDIRS);

        curl_easy_setopt(curl, CURLOPT_CRLF, config->crlf);
        curl_easy_setopt(curl, CURLOPT_QUOTE, config->quote);
        curl_easy_setopt(curl, CURLOPT_POSTQUOTE, config->postquote);
        curl_easy_setopt(curl, CURLOPT_WRITEHEADER,
                         config->headerfile?&heads:NULL);
        curl_easy_setopt(curl, CURLOPT_COOKIEFILE, config->cookiefile);
        /* cookie jar was added in 7.9 */
        if(config->cookiejar)
          curl_easy_setopt(curl, CURLOPT_COOKIEJAR, config->cookiejar);
        /* cookie session added in 7.9.7 */
        curl_easy_setopt(curl, CURLOPT_COOKIESESSION, config->cookiesession);

        curl_easy_setopt(curl, CURLOPT_SSLVERSION, config->ssl_version);
        curl_easy_setopt(curl, CURLOPT_TIMECONDITION, config->timecond);
        curl_easy_setopt(curl, CURLOPT_TIMEVALUE, config->condtime);
        curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, config->customrequest);
        curl_easy_setopt(curl, CURLOPT_STDERR, config->errors);

        /* three new ones in libcurl 7.3: */
        curl_easy_setopt(curl, CURLOPT_HTTPPROXYTUNNEL, config->proxytunnel);
        curl_easy_setopt(curl, CURLOPT_INTERFACE, config->iface);
        curl_easy_setopt(curl, CURLOPT_KRB4LEVEL, config->krb4level);

        progressbarinit(&progressbar, config);
        if((config->progressmode == CURL_PROGRESS_BAR) &&
           !(config->conf&(CONF_NOPROGRESS|CONF_MUTE))) {
          /* we want the alternative style, then we have to implement it
             ourselves! */
          curl_easy_setopt(curl, CURLOPT_PROGRESSFUNCTION, myprogress);
          curl_easy_setopt(curl, CURLOPT_PROGRESSDATA, &progressbar);
        }

        /* new in libcurl 7.6.2: */
        curl_easy_setopt(curl, CURLOPT_TELNETOPTIONS, config->telnet_options);

        /* new in libcurl 7.7: */
        curl_easy_setopt(curl, CURLOPT_RANDOM_FILE, config->random_file);
        curl_easy_setopt(curl, CURLOPT_EGDSOCKET, config->egd_file);
        curl_easy_setopt(curl, CURLOPT_CONNECTTIMEOUT, config->connecttimeout);

        if(config->cipher_list)
          curl_easy_setopt(curl, CURLOPT_SSL_CIPHER_LIST, config->cipher_list);

        if(config->httpversion)
          curl_easy_setopt(curl, CURLOPT_HTTP_VERSION, config->httpversion);

        /* new in libcurl 7.9.2: */
        if(config->disable_epsv)
          /* disable it */
          curl_easy_setopt(curl, CURLOPT_FTP_USE_EPSV, FALSE);

        /* new in libcurl 7.10.5 */
        if(config->disable_eprt)
          /* disable it */
          curl_easy_setopt(curl, CURLOPT_FTP_USE_EPRT, FALSE);

        /* new in libcurl 7.10.6 (default is Basic) */
        if(config->authtype)
          curl_easy_setopt(curl, CURLOPT_HTTPAUTH, config->authtype);

        /* new in curl 7.9.7 */
        if(config->trace_dump) {
          curl_easy_setopt(curl, CURLOPT_DEBUGFUNCTION, my_trace);
          curl_easy_setopt(curl, CURLOPT_DEBUGDATA, config);
          config->conf |= CONF_VERBOSE; /* force verbose */
        }
        curl_easy_setopt(curl, CURLOPT_VERBOSE, config->conf&CONF_VERBOSE);

        res = CURLE_OK;

        /* new in curl ?? */
        if (config->engine) {
          res = curl_easy_setopt(curl, CURLOPT_SSLENGINE, config->engine);
          curl_easy_setopt(curl, CURLOPT_SSLENGINE_DEFAULT, 1);
        }

        if (res != CURLE_OK)
           goto show_error;

        /* new in curl 7.10 */
        curl_easy_setopt(curl, CURLOPT_ENCODING,
                         (config->encoding) ? "" : NULL);

        /* new in curl 7.10.7 */
        curl_easy_setopt(curl, CURLOPT_FTP_CREATE_MISSING_DIRS,
                         config->ftp_create_dirs);
        if(config->proxyntlm)
          curl_easy_setopt(curl, CURLOPT_PROXYAUTH, CURLAUTH_NTLM);
        else if(config->proxydigest)
          curl_easy_setopt(curl, CURLOPT_PROXYAUTH, CURLAUTH_DIGEST);
        else if(config->proxybasic)
          curl_easy_setopt(curl, CURLOPT_PROXYAUTH, CURLAUTH_BASIC);

        /* new in curl 7.10.8 */
        if(config->max_filesize)
          curl_easy_setopt(curl, CURLOPT_MAXFILESIZE_LARGE,
                           config->max_filesize);

        if(4 == config->ip_version)
          curl_easy_setopt(curl, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4);
        else if(6 == config->ip_version)
          curl_easy_setopt(curl, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V6);
        else
          curl_easy_setopt(curl, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_WHATEVER);

        /* new in curl 7.11.0 */
        if(config->ftp_ssl)
          curl_easy_setopt(curl, CURLOPT_FTP_SSL, CURLFTPSSL_TRY);

        /* new in curl 7.11.1 */
        if(config->socks5proxy) {
          curl_easy_setopt(curl, CURLOPT_PROXY, config->socks5proxy);
          curl_easy_setopt(curl, CURLOPT_PROXYTYPE, CURLPROXY_SOCKS5);
        }

        retry_numretries = config->req_retry;

        retrystart = curlx_tvnow();

        do {
          res = curl_easy_perform(curl);

          /* if retry-max-time is non-zero, make sure we haven't exceeded the
             time */
          if(retry_numretries &&
             (!config->retry_maxtime ||
              (curlx_tvdiff(curlx_tvnow(), retrystart)<
               config->retry_maxtime*1000)) ) {
            enum {
              RETRY_NO,
              RETRY_TIMEOUT,
              RETRY_HTTP,
              RETRY_FTP,
              RETRY_LAST /* not used */
            } retry = RETRY_NO;
            if(CURLE_OPERATION_TIMEDOUT == res)
              /* retry timeout always */
              retry = RETRY_TIMEOUT;
            else if(CURLE_OK == res) {
              /* Check for HTTP transient errors */
              char *url=NULL;
              curl_easy_getinfo(curl, CURLINFO_EFFECTIVE_URL, &url);
              if(url &&
                 curlx_strnequal(url, "http", 4)) {
                /* This was HTTP(S) */
                curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &response);

                switch(response) {
                case 500: /* Internal Server Error */
                case 502: /* Bad Gateway */
                case 503: /* Service Unavailable */
                case 504: /* Gateway Timeout */
                  retry = RETRY_HTTP;
                  /*
                   * At this point, we have already written data to the output
                   * file (or terminal). If we write to a file, we must rewind
                   * or close/re-open the file so that the next attempt starts
                   * over from the beginning.
                   *
                   * TODO: similar action for the upload case. We might need
                   * to start over reading from a previous point if we have
                   * uploaded something when this was returned.
                   */
                  break;
                }
              }
            } /* if CURLE_OK */
            else if(CURLE_FTP_USER_PASSWORD_INCORRECT == res) {
              curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &response);

              if(response/100 == 5)
                /*
                 * This is typically when the FTP server only allows a certain
                 * amount of users and we are not one of them. It mostly
                 * returns 530 in this case, but all 5xx codes are transient.
                 */
                retry = RETRY_FTP;
            }

            if(retry) {
              if(!(config->conf&CONF_MUTE)) {
                static const char * const m[]={NULL,
                                              "timeout",
                                              "HTTP error",
                                              "FTP error"
                };
                fprintf(stderr, "Transient problem: %s\n"
                        "Will retry in %ld seconds. "
                        "%ld retries left.\n",
                        m[retry],
                        retry_sleep/1000,
                        retry_numretries);
              }
              go_sleep(retry_sleep);
              retry_numretries--;
              if(!config->retry_delay) {
                retry_sleep *= 2;
                if(retry_sleep > RETRY_SLEEP_MAX)
                  retry_sleep = RETRY_SLEEP_MAX;
              }
              if(outs.bytes && outs.filename) {
                /* We have written data to a output file, we truncate file
                 */
                if(!(config->conf&CONF_MUTE))
                  fprintf(stderr, "Throwing away " CURL_FORMAT_OFF_T
                          " bytes\n", outs.bytes);
                fflush(outs.stream);
                /* truncate file at the position where we started appending */
                ftruncate( fileno(outs.stream), outs.init);
                /* now seek to the end of the file, the position where we
                   just truncated the file */
                fseek(outs.stream, 0, SEEK_END);
                outs.bytes = 0; /* clear for next round */
              }
              continue;
            }
          } /* if retry_numretries */

          /* In all ordinary cases, just break out of loop here */
          retry_sleep = retry_sleep_default;
          break;

        } while(1);

        if((config->progressmode == CURL_PROGRESS_BAR) &&
           progressbar.calls) {
          /* if the custom progress bar has been displayed, we output a
             newline here */
          fputs("\n", progressbar.out);
        }

        if(config->writeout) {
          ourWriteOut(curl, config->writeout);
        }
#ifdef USE_ENVIRONMENT
        if (config->writeenv)
          ourWriteEnv(curl);
#endif

show_error:

#ifdef  VMS
        if (!config->showerror)  {
          vms_show = VMSSTS_HIDE;
        }
#else
        if((res!=CURLE_OK) && config->showerror) {
          fprintf(config->errors, "curl: (%d) %s\n", (int)res,
                  errorbuffer[0]? errorbuffer:
                  curl_easy_strerror((CURLcode)res));
          if(CURLE_SSL_CACERT == res) {
#define CURL_CA_CERT_ERRORMSG1 \
"More details here: http://curl.haxx.se/docs/sslcerts.html\n\n" \
"curl performs SSL certificate verification by default, using a \"bundle\"\n" \
" of Certificate Authority (CA) public keys (CA certs). The default\n" \
" bundle is named curl-ca-bundle.crt; you can specify an alternate file\n" \
" using the --cacert option.\n"

#define CURL_CA_CERT_ERRORMSG2 \
"If this HTTPS server uses a certificate signed by a CA represented in\n" \
" the bundle, the certificate verification probably failed due to a\n" \
" problem with the certificate (it might be expired, or the name might\n" \
" not match the domain name in the URL).\n" \
"If you'd like to turn off curl's verification of the certificate, use\n" \
" the -k (or --insecure) option.\n"

            fprintf(config->errors, "%s%s",
                    CURL_CA_CERT_ERRORMSG1,
                    CURL_CA_CERT_ERRORMSG2 );
          }
        }
#endif

        if (outfile && !curlx_strequal(outfile, "-") && outs.stream)
          fclose(outs.stream);

#ifdef HAVE_UTIME
        /* Important that we set the time _after_ the file has been
           closed, as is done above here */
        if(config->remote_time && outs.filename) {
          /* as libcurl if we got a time. Pretty please */
          long filetime;
          curl_easy_getinfo(curl, CURLINFO_FILETIME, &filetime);
          if(filetime >= 0) {
            struct utimbuf times;
            times.actime = (time_t)filetime;
            times.modtime = (time_t)filetime;
            utime(outs.filename, &times); /* set the time we got */
          }
        }
#endif
#ifdef AMIGA
        /* Set the url as comment for the file. (up to 80 chars are allowed)
         */
        if( strlen(url) > 78 )
          url[79] = '\0';

        SetComment( outs.filename, url);
#endif

        if(headerfilep)
          fclose(headerfilep);

        if (httpgetfields)
          free(httpgetfields);

        if(url)
          free(url);

        if(outfile)
          free(outfile);

        if(infdfopen)
          fclose(infd);

      } /* loop to the next URL */

      if(urls)
        /* cleanup memory used for URL globbing patterns */
        glob_cleanup(urls);

      if(uploadfile)
        free(uploadfile);

    } /* loop to the next globbed upload file */

    if(inglob)
      glob_cleanup(inglob);

    if(outfiles)
      free(outfiles);

    /* empty this urlnode struct */
    if(urlnode->url)
      free(urlnode->url);
    if(urlnode->outfile)
      free(urlnode->outfile);
    if(urlnode->infile)
      free(urlnode->infile);

    /* move on to the next URL */
    nextnode=urlnode->next;
    free(urlnode); /* free the node */
    urlnode = nextnode;

  } /* while-loop through all URLs */

quit_curl:
  if (config->engine)
    free(config->engine);

  if(config->headerfile && !headerfilep && heads.stream)
    fclose(heads.stream);

  if(allocuseragent)
    free(config->useragent);

  /* cleanup the curl handle! */
  curl_easy_cleanup(curl);

  if(config->trace_fopened && config->trace_stream)
    fclose(config->trace_stream);

  if(config->errors_fopened)
    fclose(config->errors);

  main_free(); /* cleanup */

  return res;
}

static void checkfds(void);

static void checkfds(void)
{
#ifdef HAVE_PIPE
  int fd[2] = { STDIN_FILENO, STDIN_FILENO };
  while( fd[0] == STDIN_FILENO ||
         fd[0] == STDOUT_FILENO ||
         fd[0] == STDERR_FILENO ||
         fd[1] == STDIN_FILENO ||
         fd[1] == STDOUT_FILENO ||
         fd[1] == STDERR_FILENO )
    pipe(fd);

  close(fd[0]);
  close(fd[1]);
#endif
}


int main(int argc, char *argv[])
{
  int res;
  struct Configurable config;
  memset(&config, 0, sizeof(struct Configurable));

  checkfds();

  res = operate(&config, argc, argv);
  free_config_fields(&config);

#ifdef __NOVELL_LIBC__
  pressanykey();
#endif
#ifdef  VMS
  if (res > CURL_LAST) res = CURL_LAST; /* If CURL_LAST exceeded then */
  return (vms_cond[res]|vms_show);      /* curlmsg.h is out of sync.  */
#else
  return res;
#endif
}

static char *my_get_line(FILE *fp)
{
   char buf[4096];
   char *nl = NULL;
   char *retval = NULL;

   do {
     if (NULL == fgets(buf, sizeof(buf), fp))
       break;
     if (NULL == retval)
       retval = strdup(buf);
     else {
       if (NULL == (retval = realloc(retval,
                                     strlen(retval) + strlen(buf) + 1)))
         break;
       strcat(retval, buf);
     }
   }
   while (NULL == (nl = strchr(retval, '\n')));

   if (NULL != nl)
     *nl = '\0';

   return retval;
}


/* Create the needed directory hierarchy recursively in order to save
   multi-GETs in file output, ie:
   curl "http://my.site/dir[1-5]/file[1-5].txt" -o "dir#1/file#2.txt"
   should create all the dir* automagically
*/
static int create_dir_hierarchy(char *outfile)
{
  char *tempdir;
  char *tempdir2;
  char *outdup;
  char *dirbuildup;
  int result=0;

  outdup = strdup(outfile);
  dirbuildup = malloc(sizeof(char) * strlen(outfile));
  if(!dirbuildup)
    return -1;
  dirbuildup[0] = '\0';

  tempdir = strtok(outdup, DIR_CHAR);

  while (tempdir != NULL) {
    tempdir2 = strtok(NULL, DIR_CHAR);
    /* since strtok returns a token for the last word even
       if not ending with DIR_CHAR, we need to prune it */
    if (tempdir2 != NULL) {
      if (strlen(dirbuildup) > 0)
        sprintf(dirbuildup,"%s%s%s",dirbuildup, DIR_CHAR, tempdir);
      else {
        if (0 != strncmp(outdup, DIR_CHAR, 1))
          sprintf(dirbuildup,"%s",tempdir);
        else
          sprintf(dirbuildup,"%s%s", DIR_CHAR, tempdir);
      }
      if (access(dirbuildup, F_OK) == -1) {
        result = mkdir(dirbuildup,(mode_t)0000750);
        if (-1 == result) {
          switch (errno) {
#ifdef EACCES
          case EACCES:
            fprintf(stderr,"You don't have permission to create %s.\n",
                    dirbuildup);
            break;
#endif
#ifdef ENAMETOOLONG
          case ENAMETOOLONG:
            fprintf(stderr,"The directory name %s is too long.\n",
                    dirbuildup);
            break;
#endif
#ifdef EROFS
          case EROFS:
            fprintf(stderr,"%s resides on a read-only file system.\n",
                    dirbuildup);
            break;
#endif
#ifdef ENOSPC
          case ENOSPC:
            fprintf(stderr,"No space left on the file system that will "
                    "contain the directory %s.\n", dirbuildup);
            break;
#endif
#ifdef EDQUOT
          case EDQUOT:
            fprintf(stderr,"Cannot create directory %s because you "
                    "exceeded your quota.\n", dirbuildup);
            break;
#endif
          default :
            fprintf(stderr,"Error creating directory %s.\n", dirbuildup);
            break;
          }
          break; /* get out of loop */
        }
      }
    }
    tempdir = tempdir2;
  }
  free(dirbuildup);
  free(outdup);

  return result; /* 0 is fine, -1 is badness */
}

#ifdef __DJGPP__
/* The following functions are taken with modification from the DJGPP
 * port of tar 1.12. They use algorithms originally from DJTAR. */

char *
msdosify (char *file_name)
{
  static char dos_name[PATH_MAX];
  static const char illegal_chars_dos[] = ".+, ;=[]|<>\\\":?*";
  static const char *illegal_chars_w95 = &illegal_chars_dos[8];
  int idx, dot_idx;
  char *s = file_name, *d = dos_name;
  const char *illegal_aliens = illegal_chars_dos;
  size_t len = sizeof (illegal_chars_dos) - 1;
  int lfn = 0;

  /* Support for Windows 9X VFAT systems, when available.  */
  if (_use_lfn (file_name))
    lfn = 1;
  if (lfn) {
    illegal_aliens = illegal_chars_w95;
    len -= (illegal_chars_w95 - illegal_chars_dos);
  }

  /* Get past the drive letter, if any. */
  if (s[0] >= 'A' && s[0] <= 'z' && s[1] == ':') {
    *d++ = *s++;
    *d++ = *s++;
  }

  for (idx = 0, dot_idx = -1; *s; s++, d++) {
    if (memchr (illegal_aliens, *s, len)) {
      /* Dots are special: DOS doesn't allow them as the leading character,
         and a file name cannot have more than a single dot.  We leave the
         first non-leading dot alone, unless it comes too close to the
         beginning of the name: we want sh.lex.c to become sh_lex.c, not
         sh.lex-c.  */
      if (*s == '.') {
        if (idx == 0 && (s[1] == '/' || (s[1] == '.' && s[2] == '/'))) {
          /* Copy "./" and "../" verbatim.  */
          *d++ = *s++;
          if (*s == '.')
            *d++ = *s++;
          *d = *s;
        }
        else if (idx == 0)
          *d = '_';
        else if (dot_idx >= 0) {
          if (dot_idx < 5) { /* 5 is a heuristic ad-hoc'ery */
            d[dot_idx - idx] = '_'; /* replace previous dot */
            *d = '.';
          }
          else
            *d = '-';
        }
        else
          *d = '.';

        if (*s == '.')
          dot_idx = idx;
      }
      else if (*s == '+' && s[1] == '+') {
        if (idx - 2 == dot_idx) { /* .c++, .h++ etc. */
          *d++ = 'x';
          *d   = 'x';
        }
        else {
          /* libg++ etc.  */
          memcpy (d, "plus", 4);
          d += 3;
        }
        s++;
        idx++;
      }
      else
        *d = '_';
    }
    else
      *d = *s;
    if (*s == '/') {
      idx = 0;
      dot_idx = -1;
    }
    else
      idx++;
  }

  *d = '\0';
  return dos_name;
}

char *
rename_if_dos_device_name (char *file_name)
{
  /* We could have a file whose name is a device on MS-DOS.  Trying to
   * retrieve such a file would fail at best and wedge us at worst.  We need
   * to rename such files. */
  char *base;
  struct stat st_buf;
  char fname[PATH_MAX];

  strcpy (fname, file_name);
  base = basename (fname);
  if (((stat(base, &st_buf)) == 0) && (S_ISCHR(st_buf.st_mode))) {
    size_t blen = strlen (base);

    /* Prepend a '_'.  */
    memmove (base + 1, base, blen + 1);
    base[0] = '_';
    strcpy (file_name, fname);
  }
  return file_name;
}

#endif /* __DJGPP__ */