C++ curlx_strtoofft函数代码示例

 /*
  Check if this is a range download, and if so, set the internal variables
  properly. This code is copied from the FTP implementation and might as
  well be factored out.
 */
static CURLcode file_range(struct connectdata *conn)
{
  curl_off_t from, to;
  curl_off_t totalsize=-1;
  char *ptr;
  char *ptr2;
  struct Curl_easy *data = conn->data;

  if(data->state.use_range && data->state.range) {
    CURLofft from_t;
    CURLofft to_t;
    from_t = curlx_strtoofft(data->state.range, &ptr, 0, &from);
    if(from_t == CURL_OFFT_FLOW)
      return CURLE_RANGE_ERROR;
    while(*ptr && (ISSPACE(*ptr) || (*ptr=='-')))
      ptr++;
    to_t = curlx_strtoofft(ptr, &ptr2, 0, &to);
    if(to_t == CURL_OFFT_FLOW)
      return CURLE_RANGE_ERROR;
    if((to_t == CURL_OFFT_INVAL) && !from_t) {
      /* X - */
      data->state.resume_from = from;
      DEBUGF(infof(data, "RANGE %" CURL_FORMAT_CURL_OFF_T " to end of file\n",
                   from));
    }
    else if((from_t == CURL_OFFT_INVAL) && !to_t) {
      /* -Y */
      data->req.maxdownload = to;
      data->state.resume_from = -to;
      DEBUGF(infof(data, "RANGE the last %" CURL_FORMAT_CURL_OFF_T " bytes\n",
                   to));
    }
    else {
      /* X-Y */
      totalsize = to-from;
      data->req.maxdownload = totalsize+1; /* include last byte */
      data->state.resume_from = from;
      DEBUGF(infof(data, "RANGE from %" CURL_FORMAT_CURL_OFF_T
                   " getting %" CURL_FORMAT_CURL_OFF_T " bytes\n",
                   from, data->req.maxdownload));
    }
    DEBUGF(infof(data, "range-download from %" CURL_FORMAT_CURL_OFF_T
                 " to %" CURL_FORMAT_CURL_OFF_T ", totally %"
                 CURL_FORMAT_CURL_OFF_T " bytes\n",
                 from, to, data->req.maxdownload));
  }
  else
    data->req.maxdownload = -1;
  return CURLE_OK;
}

 /*
  Check if this is a range download, and if so, set the internal variables
  properly. This code is copied from the FTP implementation and might as
  well be factored out.
 */
static CURLcode file_range(struct connectdata *conn)
{
  curl_off_t from, to;
  curl_off_t totalsize=-1;
  char *ptr;
  char *ptr2;
  struct SessionHandle *data = conn->data;

  if(data->state.use_range && data->state.range) {
    from=curlx_strtoofft(data->state.range, &ptr, 0);
    while(ptr && *ptr && (isspace((int)*ptr) || (*ptr=='-')))
      ptr++;
    to=curlx_strtoofft(ptr, &ptr2, 0);
    if(ptr == ptr2) {
      /* we didn't get any digit */
      to=-1;
    }
    if((-1 == to) && (from>=0)) {
      /* X - */
      data->state.resume_from = from;
      DEBUGF(infof(data, "RANGE %" FORMAT_OFF_T " to end of file\n",
                   from));
    }
    else if(from < 0) {
      /* -Y */
      totalsize = -from;
      data->req.maxdownload = -from;
      data->state.resume_from = from;
      DEBUGF(infof(data, "RANGE the last %" FORMAT_OFF_T " bytes\n",
                   totalsize));
    }
    else {
      /* X-Y */
      totalsize = to-from;
      data->req.maxdownload = totalsize+1; /* include last byte */
      data->state.resume_from = from;
      DEBUGF(infof(data, "RANGE from %" FORMAT_OFF_T
                   " getting %" FORMAT_OFF_T " bytes\n",
                   from, data->req.maxdownload));
    }
    DEBUGF(infof(data, "range-download from %" FORMAT_OFF_T
                 " to %" FORMAT_OFF_T ", totally %" FORMAT_OFF_T " bytes\n",
                 from, to, data->req.maxdownload));
  }
  else
    data->req.maxdownload = -1;
  return CURLE_OK;
}

/**
 * Parses the given string looking for an offset (which may be a
 * larger-than-integer value). The offset CANNOT be negative!
 *
 * @param val  the offset to populate
 * @param str  the buffer containing the offset
 * @return PARAM_OK if successful, a parameter specific error enum if failure.
 */
ParameterError str2offset(curl_off_t *val, const char *str)
{
  char *endptr;
  if(str[0] == '-')
    /* offsets aren't negative, this indicates weird input */
    return PARAM_NEGATIVE_NUMERIC;

#if(SIZEOF_CURL_OFF_T > SIZEOF_LONG)
  {
    CURLofft offt = curlx_strtoofft(str, &endptr, 0, val);
    if(CURL_OFFT_FLOW == offt)
      return PARAM_NUMBER_TOO_LARGE;
    else if(CURL_OFFT_INVAL == offt)
      return PARAM_BAD_NUMERIC;
  }
#else
  errno = 0;
  *val = strtol(str, &endptr, 0);
  if((*val == LONG_MIN || *val == LONG_MAX) && errno == ERANGE)
    return PARAM_NUMBER_TOO_LARGE;
#endif
  if((endptr != str) && (endptr == str + strlen(str)))
    return PARAM_OK;

  return PARAM_BAD_NUMERIC;
}

/**
 * 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.
 */
int str2offset(curl_off_t *val, const char *str)
{
#if(CURL_SIZEOF_CURL_OFF_T > CURL_SIZEOF_LONG)
  *val = curlx_strtoofft(str, NULL, 0);
  if((*val == CURL_OFF_T_MAX || *val == CURL_OFF_T_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;
}

/**
 * Parses the given string looking for an offset (which may be a
 * larger-than-integer value). The offset CANNOT be negative!
 *
 * @param val  the offset to populate
 * @param str  the buffer containing the offset
 * @return PARAM_OK if successful, a parameter specific error enum if failure.
 */
ParameterError str2offset(curl_off_t *val, const char *str)
{
  char *endptr;
  if(str[0] == '-')
    /* offsets aren't negative, this indicates weird input */
    return PARAM_NEGATIVE_NUMERIC;

#if(CURL_SIZEOF_CURL_OFF_T > CURL_SIZEOF_LONG)
  *val = curlx_strtoofft(str, &endptr, 0);
  if((*val == CURL_OFF_T_MAX || *val == CURL_OFF_T_MIN) && (ERRNO == ERANGE))
    return PARAM_BAD_NUMERIC;
#else
  *val = strtol(str, &endptr, 0);
  if((*val == LONG_MIN || *val == LONG_MAX) && ERRNO == ERANGE)
    return PARAM_BAD_NUMERIC;
#endif
  if((endptr != str) && (endptr == str + strlen(str)))
    return PARAM_OK;

  return PARAM_BAD_NUMERIC;
}

//.........这里部分代码省略.........
        */
        co->tailmatch = Curl_raw_equal(ptr, "TRUE")?TRUE:FALSE;
        break;
      case 2:
        /* It turns out, that sometimes the file format allows the path
           field to remain not filled in, we try to detect this and work
           around it! Andrés García made us aware of this... */
        if(strcmp("TRUE", ptr) && strcmp("FALSE", ptr)) {
          /* only if the path doesn't look like a boolean option! */
          co->path = strdup(ptr);
          if(!co->path)
            badcookie = TRUE;
          else {
            co->spath = sanitize_cookie_path(co->path);
            if(!co->spath) {
              badcookie = TRUE; /* out of memory bad */
            }
          }
          break;
        }
        /* this doesn't look like a path, make one up! */
        co->path = strdup("/");
        if(!co->path)
          badcookie = TRUE;
        co->spath = strdup("/");
        if(!co->spath)
          badcookie = TRUE;
        fields++; /* add a field and fall down to secure */
        /* FALLTHROUGH */
      case 3:
        co->secure = Curl_raw_equal(ptr, "TRUE")?TRUE:FALSE;
        break;
      case 4:
        co->expires = curlx_strtoofft(ptr, NULL, 10);
        break;
      case 5:
        co->name = strdup(ptr);
        if(!co->name)
          badcookie = TRUE;
        break;
      case 6:
        co->value = strdup(ptr);
        if(!co->value)
          badcookie = TRUE;
        break;
      }
    }
    if(6 == fields) {
      /* we got a cookie with blank contents, fix it */
      co->value = strdup("");
      if(!co->value)
        badcookie = TRUE;
      else
        fields++;
    }

    if(!badcookie && (7 != fields))
      /* we did not find the sufficient number of fields */
      badcookie = TRUE;

    if(badcookie) {
      freecookie(co);
      return NULL;
    }

  }

//.........这里部分代码省略.........
          parser->item_length++;
          if(c == ' ') {
            finfo->b_data[parser->item_offset + parser->item_length - 1] = 0;
            parser->offsets.group = parser->item_offset;
            parser->state.UNIX.main = PL_UNIX_SIZE;
            parser->state.UNIX.sub.size = PL_UNIX_SIZE_PRESPACE;
            parser->item_offset = 0;
            parser->item_length = 0;
          }
          break;
        }
        break;
      case PL_UNIX_SIZE:
        switch(parser->state.UNIX.sub.size) {
        case PL_UNIX_SIZE_PRESPACE:
          if(c != ' ') {
            if(c >= '0' && c <= '9') {
              parser->item_offset = finfo->b_used - 1;
              parser->item_length = 1;
              parser->state.UNIX.sub.size = PL_UNIX_SIZE_NUMBER;
            }
            else {
              PL_ERROR(conn, CURLE_FTP_BAD_FILE_LIST);
              return bufflen;
            }
          }
          break;
        case PL_UNIX_SIZE_NUMBER:
          parser->item_length++;
          if(c == ' ') {
            char *p;
            curl_off_t fsize;
            finfo->b_data[parser->item_offset + parser->item_length - 1] = 0;
            fsize = curlx_strtoofft(finfo->b_data+parser->item_offset, &p, 10);
            if(p[0] == '\0' && fsize != CURL_OFF_T_MAX &&
                               fsize != CURL_OFF_T_MIN) {
              parser->file_data->flags |= CURLFINFOFLAG_KNOWN_SIZE;
              parser->file_data->size = fsize;
            }
            parser->item_length = 0;
            parser->item_offset = 0;
            parser->state.UNIX.main = PL_UNIX_TIME;
            parser->state.UNIX.sub.time = PL_UNIX_TIME_PREPART1;
          }
          else if(!ISDIGIT(c)) {
            PL_ERROR(conn, CURLE_FTP_BAD_FILE_LIST);
            return bufflen;
          }
          break;
        }
        break;
      case PL_UNIX_TIME:
        switch(parser->state.UNIX.sub.time) {
        case PL_UNIX_TIME_PREPART1:
          if(c != ' ') {
            if(ISALNUM(c)) {
              parser->item_offset = finfo->b_used -1;
              parser->item_length = 1;
              parser->state.UNIX.sub.time = PL_UNIX_TIME_PART1;
            }
            else {
              PL_ERROR(conn, CURLE_FTP_BAD_FILE_LIST);
              return bufflen;
            }
          }
          break;

//.........这里部分代码省略.........
                        /* without content-length or chunked encoding, we
                           can't keep the connection alive since the close is
                           the end signal so we bail out at once instead */
                        keepon=FALSE;
                      }
                    }
                    else {
                      keepon = FALSE;
                      if(200 == data->info.httpproxycode) {
                        if(gotbytes - (i+1))
                          failf(data, "Proxy CONNECT followed by %zd bytes "
                                "of opaque data. Data ignored (known bug #39)",
                                gotbytes - (i+1));
                      }
                    }
                    /* we did the full CONNECT treatment, go to COMPLETE */
                    conn->tunnel_state[sockindex] = TUNNEL_COMPLETE;
                    break; /* breaks out of for-loop, not switch() */
                  }

                  /* keep a backup of the position we are about to blank */
                  letter = line_start[perline];
                  line_start[perline]=0; /* zero terminate the buffer */
                  if((checkprefix("WWW-Authenticate:", line_start) &&
                      (401 == k->httpcode)) ||
                     (checkprefix("Proxy-authenticate:", line_start) &&
                      (407 == k->httpcode))) {
                    result = Curl_http_input_auth(conn, k->httpcode,
                                                  line_start);
                    if(result)
                      return result;
                  }
                  else if(checkprefix("Content-Length:", line_start)) {
                    cl = curlx_strtoofft(line_start +
                                         strlen("Content-Length:"), NULL, 10);
                  }
                  else if(Curl_compareheader(line_start,
                                             "Connection:", "close"))
                    closeConnection = TRUE;
                  else if(Curl_compareheader(line_start,
                                             "Transfer-Encoding:",
                                             "chunked")) {
                    infof(data, "CONNECT responded chunked\n");
                    chunked_encoding = TRUE;
                    /* init our chunky engine */
                    Curl_httpchunk_init(conn);
                  }
                  else if(Curl_compareheader(line_start,
                                             "Proxy-Connection:", "close"))
                    closeConnection = TRUE;
                  else if(2 == sscanf(line_start, "HTTP/1.%d %d",
                                      &subversion,
                                      &k->httpcode)) {
                    /* store the HTTP code from the proxy */
                    data->info.httpproxycode = k->httpcode;
                  }
                  /* put back the letter we blanked out before */
                  line_start[perline]= letter;

                  perline=0; /* line starts over here */
                  line_start = ptr+1; /* this skips the zero byte we wrote */
                }
              }
          }
          break;
        } /* switch */

//.........这里部分代码省略.........
          if(!s->cl)
            /* we did the full CONNECT treatment, go to COMPLETE */
            s->tunnel_state = TUNNEL_COMPLETE;
          continue;
        }

        s->line_start[s->perline] = 0; /* zero terminate the buffer */
        if((checkprefix("WWW-Authenticate:", s->line_start) &&
            (401 == k->httpcode)) ||
           (checkprefix("Proxy-authenticate:", s->line_start) &&
            (407 == k->httpcode))) {

          bool proxy = (k->httpcode == 407) ? TRUE : FALSE;
          char *auth = Curl_copy_header_value(s->line_start);
          if(!auth)
            return CURLE_OUT_OF_MEMORY;

          result = Curl_http_input_auth(conn, proxy, auth);

          free(auth);

          if(result)
            return result;
        }
        else if(checkprefix("Content-Length:", s->line_start)) {
          if(k->httpcode/100 == 2) {
            /* A client MUST ignore any Content-Length or Transfer-Encoding
               header fields received in a successful response to CONNECT.
               "Successful" described as: 2xx (Successful). RFC 7231 4.3.6 */
            infof(data, "Ignoring Content-Length in CONNECT %03d response\n",
                  k->httpcode);
          }
          else {
            (void)curlx_strtoofft(s->line_start +
                                  strlen("Content-Length:"), NULL, 10, &s->cl);
          }
        }
        else if(Curl_compareheader(s->line_start, "Connection:", "close"))
          s->close_connection = TRUE;
        else if(checkprefix("Transfer-Encoding:", s->line_start)) {
          if(k->httpcode/100 == 2) {
            /* A client MUST ignore any Content-Length or Transfer-Encoding
               header fields received in a successful response to CONNECT.
               "Successful" described as: 2xx (Successful). RFC 7231 4.3.6 */
            infof(data, "Ignoring Transfer-Encoding in "
                  "CONNECT %03d response\n", k->httpcode);
          }
          else if(Curl_compareheader(s->line_start,
                                     "Transfer-Encoding:", "chunked")) {
            infof(data, "CONNECT responded chunked\n");
            s->chunked_encoding = TRUE;
            /* init our chunky engine */
            Curl_httpchunk_init(conn);
          }
        }
        else if(Curl_compareheader(s->line_start,
                                   "Proxy-Connection:", "close"))
          s->close_connection = TRUE;
        else if(2 == sscanf(s->line_start, "HTTP/1.%d %d",
                            &subversion,
                            &k->httpcode)) {
          /* store the HTTP code from the proxy */
          data->info.httpproxycode = k->httpcode;
        }

        s->perline = 0; /* line starts over here */

/*
 * chunk_read() returns a OK for normal operations, or a positive return code
 * for errors. STOP means this sequence of chunks is complete.  The 'wrote'
 * argument is set to tell the caller how many bytes we actually passed to the
 * client (for byte-counting and whatever).
 *
 * The states and the state-machine is further explained in the header file.
 *
 * This function always uses ASCII hex values to accommodate non-ASCII hosts.
 * For example, 0x0d and 0x0a are used instead of '\r' and '\n'.
 */
CHUNKcode Curl_httpchunk_read(struct connectdata *conn,
                              char *datap,
                              ssize_t datalen,
                              ssize_t *wrotep)
{
  CURLcode result=CURLE_OK;
  struct SessionHandle *data = conn->data;
  struct Curl_chunker *ch = &conn->chunk;
  struct SingleRequest *k = &data->req;
  size_t piece;
  curl_off_t length = (curl_off_t)datalen;
  size_t *wrote = (size_t *)wrotep;

  *wrote = 0; /* nothing's written yet */

  /* the original data is written to the client, but we go on with the
     chunk read process, to properly calculate the content length*/
  if(data->set.http_te_skip && !k->ignorebody) {
    result = Curl_client_write(conn, CLIENTWRITE_BODY, datap, datalen);
    if(result)
      return CHUNKE_WRITE_ERROR;
  }

  while(length) {
    switch(ch->state) {
    case CHUNK_HEX:
      if(Curl_isxdigit(*datap)) {
        if(ch->hexindex < MAXNUM_SIZE) {
          ch->hexbuffer[ch->hexindex] = *datap;
          datap++;
          length--;
          ch->hexindex++;
        }
        else {
          return CHUNKE_TOO_LONG_HEX; /* longer hex than we support */
        }
      }
      else {
        char *endptr;
        if(0 == ch->hexindex)
          /* This is illegal data, we received junk where we expected
             a hexadecimal digit. */
          return CHUNKE_ILLEGAL_HEX;

        /* length and datap are unmodified */
        ch->hexbuffer[ch->hexindex]=0;

        /* convert to host encoding before calling strtoul */
        result = Curl_convert_from_network(conn->data, ch->hexbuffer,
                                           ch->hexindex);
        if(result) {
          /* Curl_convert_from_network calls failf if unsuccessful */
          /* Treat it as a bad hex character */
          return CHUNKE_ILLEGAL_HEX ;
        }

        ch->datasize=curlx_strtoofft(ch->hexbuffer, &endptr, 16);
        if((ch->datasize == CURL_OFF_T_MAX) && (errno == ERANGE))
          /* overflow is an error */
          return CHUNKE_ILLEGAL_HEX;
        ch->state = CHUNK_LF; /* now wait for the CRLF */
      }
      break;

    case CHUNK_LF:
      /* waiting for the LF after a chunk size */
      if(*datap == 0x0a) {
        /* we're now expecting data to come, unless size was zero! */
        if(0 == ch->datasize) {
          ch->state = CHUNK_TRAILER; /* now check for trailers */
          conn->trlPos=0;
        }
        else
          ch->state = CHUNK_DATA;
      }

      datap++;
      length--;
      break;

    case CHUNK_DATA:
      /* We expect 'datasize' of data. We have 'length' right now, it can be
         more or less than 'datasize'. Get the smallest piece.
      */
      piece = curlx_sotouz((ch->datasize >= length)?length:ch->datasize);

      /* Write the data portion available */
#ifdef HAVE_LIBZ
      switch (conn->data->set.http_ce_skip?
//.........这里部分代码省略.........

/* For the (first line of) FETCH BODY[TEXT] response */
static CURLcode imap_state_fetch_resp(struct connectdata *conn,
                                      int imapcode,
                                      imapstate instate)
{
  CURLcode result = CURLE_OK;
  struct SessionHandle *data = conn->data;
  struct imap_conn *imapc = &conn->proto.imapc;
  struct FTP *imap = data->state.proto.imap;
  struct pingpong *pp = &imapc->pp;
  const char *ptr = data->state.buffer;

  (void)instate; /* no use for this yet */

  if('*' != imapcode) {
    Curl_pgrsSetDownloadSize(data, 0);
    state(conn, IMAP_STOP);
    return CURLE_OK;
  }

  /* Something like this comes "* 1 FETCH (BODY[TEXT] {2021}\r" */
  while(*ptr && (*ptr != '{'))
    ptr++;

  if(*ptr == '{') {
    curl_off_t filesize = curlx_strtoofft(ptr + 1, NULL, 10);
    if(filesize)
      Curl_pgrsSetDownloadSize(data, filesize);

    infof(data, "Found %" FORMAT_OFF_TU " bytes to download\n", filesize);

    if(pp->cache) {
      /* At this point there is a bunch of data in the header "cache" that is
         actually body content, send it as body and then skip it. Do note
         that there may even be additional "headers" after the body. */
      size_t chunk = pp->cache_size;

      if(chunk > (size_t)filesize)
        /* the conversion from curl_off_t to size_t is always fine here */
        chunk = (size_t)filesize;

      result = Curl_client_write(conn, CLIENTWRITE_BODY, pp->cache, chunk);
      if(result)
        return result;

      filesize -= chunk;

      /* we've now used parts of or the entire cache */
      if(pp->cache_size > chunk) {
        /* part of, move the trailing data to the start and reduce the size */
        memmove(pp->cache, pp->cache+chunk,
                pp->cache_size - chunk);
        pp->cache_size -= chunk;
      }
      else {
        /* cache is drained */
        Curl_safefree(pp->cache);
        pp->cache = NULL;
        pp->cache_size = 0;
      }
    }

    infof(data, "Filesize left: %" FORMAT_OFF_T "\n", filesize);

    if(!filesize)
      /* the entire data is already transferred! */
      Curl_setup_transfer(conn, -1, -1, FALSE, NULL, -1, NULL);
    else
      /* IMAP download */
      Curl_setup_transfer(conn, FIRSTSOCKET, filesize, FALSE,
                          imap->bytecountp, -1, NULL); /* no upload here */

    data->req.maxdownload = filesize;
  }
  else
    /* We don't know how to parse this line */
    result = CURLE_FTP_WEIRD_SERVER_REPLY; /* TODO: fix this code */

  /* End of do phase */
  state(conn, IMAP_STOP);

  return result;
}

//.........这里部分代码省略.........
        /* This field got its explanation on the 23rd of May 2001 by
           Andrés García:

           flag: A TRUE/FALSE value indicating if all machines within a given
           domain can access the variable. This value is set automatically by
           the browser, depending on the value you set for the domain.

           As far as I can see, it is set to true when the cookie says
           .domain.com and to false when the domain is complete www.domain.com
        */
        co->tailmatch=(bool)strequal(ptr, "TRUE"); /* store information */
        break;
      case 2:
        /* It turns out, that sometimes the file format allows the path
           field to remain not filled in, we try to detect this and work
           around it! Andrés García made us aware of this... */
        if (strcmp("TRUE", ptr) && strcmp("FALSE", ptr)) {
          /* only if the path doesn't look like a boolean option! */
          co->path = strdup(ptr);
          if(!co->path)
            badcookie = TRUE;
          break;
        }
        /* this doesn't look like a path, make one up! */
        co->path = strdup("/");
        if(!co->path)
          badcookie = TRUE;
        fields++; /* add a field and fall down to secure */
        /* FALLTHROUGH */
      case 3:
        co->secure = (bool)strequal(ptr, "TRUE");
        break;
      case 4:
        co->expires = curlx_strtoofft(ptr, NULL, 10);
        break;
      case 5:
        co->name = strdup(ptr);
        if(!co->name)
          badcookie = TRUE;
        break;
      case 6:
        co->value = strdup(ptr);
        if(!co->value)
          badcookie = TRUE;
        break;
      }
    }
    if(6 == fields) {
      /* we got a cookie with blank contents, fix it */
      co->value = strdup("");
      if(!co->value)
        badcookie = TRUE;
      else
        fields++;
    }

    if(!badcookie && (7 != fields))
      /* we did not find the sufficient number of fields */
      badcookie = TRUE;

    if(badcookie) {
      freecookie(co);
      return NULL;
    }

  }

struct Curl_local_handler * get_local_handler(const char *proto)
{
	int i = 0;
	for (; i < local_handlers_size; i++) {
		struct Curl_local_handler *handler = local_handlers[i];
#if defined(WIN32)
		if (handler && handler->protocol && _stricmp(handler->protocol, proto) == 0) {
#else
		if (handler && handler->protocol && strcasecmp(handler->protocol, proto) == 0) {
#endif
			return handler;
		}
	}
	return NULL;
}

int is_local_handler(const char *proto)
{
	return get_local_handler(proto) != NULL;
}

/*
 * FILE scheme handler.
 */

const struct Curl_handler Curl_handler_custom = {
  ZERO_NULL,                           /* scheme */
  ZERO_NULL,                            /* setup_connection */
  custom_do,                              /* do_it */
  custom_done,                            /* done */
  ZERO_NULL,                            /* do_more */
  custom_connect,                         /* connect_it */
  ZERO_NULL,                            /* connecting */
  ZERO_NULL,                            /* doing */
  ZERO_NULL,                            /* proto_getsock */
  ZERO_NULL,                            /* doing_getsock */
  ZERO_NULL,                            /* disconnect */
  0,                                    /* defport */
  PROT_FILE                            /* protocol */
};


 /*
  Check if this is a range download, and if so, set the internal variables
  properly. This code is copied from the FTP implementation and might as
  well be factored out.
 */
static CURLcode custom_range(struct connectdata *conn)
{
  curl_off_t from, to;
  curl_off_t totalsize=-1;
  char *ptr;
  char *ptr2;
  struct SessionHandle *data = conn->data;

  if(data->state.use_range && data->state.range) {
    from=curlx_strtoofft(data->state.range, &ptr, 0);
    while(ptr && *ptr && (isspace((int)*ptr) || (*ptr=='-')))
      ptr++;
    to=curlx_strtoofft(ptr, &ptr2, 0);
    if(ptr == ptr2) {
      /* we didn't get any digit */
      to=-1;
    }
    if((-1 == to) && (from>=0)) {
      /* X - */
      data->state.resume_from = from;
      DEBUGF(infof(data, "RANGE %" FORMAT_OFF_T " to end of file\n",
                   from));
    }
    else if(from < 0) {
      /* -Y */
      totalsize = -from;
      data->req.maxdownload = -from;
      data->state.resume_from = from;
      DEBUGF(infof(data, "RANGE the last %" FORMAT_OFF_T " bytes\n",
                   totalsize));
    }
    else {
      /* X-Y */
      totalsize = to-from;
      data->req.maxdownload = totalsize+1; /* include last byte */
      data->state.resume_from = from;
      DEBUGF(infof(data, "RANGE from %" FORMAT_OFF_T
                   " getting %" FORMAT_OFF_T " bytes\n",
                   from, data->req.maxdownload));
    }
    DEBUGF(infof(data, "range-download from %" FORMAT_OFF_T
                 " to %" FORMAT_OFF_T ", totally %" FORMAT_OFF_T " bytes\n",
                 from, to, data->req.maxdownload));
  }
  else
    data->req.maxdownload = -1;
  return CURLE_OK;
}