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+/***************************************************************************
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+ * _ _ ____ _
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+ * Project ___| | | | _ \| |
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+ * / __| | | | |_) | |
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+ * | (__| |_| | _ <| |___
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+ * \___|\___/|_| \_\_____|
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+ *
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+ * Copyright (C) 1998 - 2005, Daniel Stenberg, <daniel@haxx.se>, et al.
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+ *
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+ * This software is licensed as described in the file COPYING, which
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+ * you should have received as part of this distribution. The terms
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+ * are also available at http://curl.haxx.se/docs/copyright.html.
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+ *
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+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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+ * copies of the Software, and permit persons to whom the Software is
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+ * furnished to do so, under the terms of the COPYING file.
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+ *
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+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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+ * KIND, either express or implied.
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+ *
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+ * $Id$
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+ ***************************************************************************/
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+
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+#include "setup.h"
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+
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+#ifndef CURL_DISABLE_TFTP
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+/* -- WIN32 approved -- */
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+#include <stdio.h>
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+#include <string.h>
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+#include <stdarg.h>
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+#include <stdlib.h>
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+#include <ctype.h>
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+#ifdef HAVE_SYS_TYPES_H
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+#include <sys/types.h>
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+#endif
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+#ifdef HAVE_SYS_STAT_H
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+#include <sys/stat.h>
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+#endif
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+#include <errno.h>
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+
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+#if defined(WIN32)
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+#include <time.h>
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+#include <io.h>
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+#else
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+#ifdef HAVE_SYS_SOCKET_H
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+#include <sys/socket.h>
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+#endif
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+#include <netinet/in.h>
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+#include <sys/time.h>
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+#ifdef HAVE_UNISTD_H
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+#include <unistd.h>
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+#endif
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+#include <netdb.h>
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+#ifdef HAVE_ARPA_INET_H
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+#include <arpa/inet.h>
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+#endif
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+#ifdef HAVE_NET_IF_H
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+#include <net/if.h>
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+#endif
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+#include <sys/ioctl.h>
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+#include <signal.h>
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+
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+#ifdef HAVE_SYS_PARAM_H
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+#include <sys/param.h>
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+#endif
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+
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+
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+#endif
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+
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+#include "urldata.h"
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+#include <curl/curl.h>
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+#include "transfer.h"
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+#include "sendf.h"
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+#include "tftp.h"
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+#include "progress.h"
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+
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+#define _MPRINTF_REPLACE /* use our functions only */
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+#include <curl/mprintf.h>
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+
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+#include "memory.h"
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+#include "select.h"
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+
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+/* The last #include file should be: */
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+#include "memdebug.h"
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+
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+#ifndef MSG_NOSIGNAL
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+#define MSG_NOSIGNAL 0
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+#endif
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+
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+typedef enum {
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+ TFTP_MODE_NETASCII=0,
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+ TFTP_MODE_OCTET
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+} tftp_mode_t;
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+
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+typedef enum {
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+ TFTP_STATE_START=0,
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+ TFTP_STATE_RX,
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+ TFTP_STATE_TX,
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+ TFTP_STATE_FIN
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+} tftp_state_t;
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+
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+typedef enum {
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+ TFTP_EVENT_INIT=0,
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+ TFTP_EVENT_RRQ = 1,
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+ TFTP_EVENT_WRQ = 2,
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+ TFTP_EVENT_DATA = 3,
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+ TFTP_EVENT_ACK = 4,
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+ TFTP_EVENT_ERROR = 5,
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+ TFTP_EVENT_TIMEOUT
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+} tftp_event_t;
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+
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+typedef enum {
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+ TFTP_ERR_UNDEF=0,
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+ TFTP_ERR_NOTFOUND,
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+ TFTP_ERR_PERM,
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+ TFTP_ERR_DISKFULL,
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+ TFTP_ERR_ILLEGAL,
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+ TFTP_ERR_UNKNOWNID,
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+ TFTP_ERR_EXISTS,
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+ TFTP_ERR_NOSUCHUSER,
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+ TFTP_ERR_TIMEOUT,
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+ TFTP_ERR_NORESPONSE
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+} tftp_error_t;
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+
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+typedef struct tftp_packet {
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+ unsigned short event;
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+ union {
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+ struct {
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+ unsigned char data[512];
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+ } request;
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+ struct {
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+ unsigned short block;
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+ unsigned char data[512];
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+ } data;
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+ struct {
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+ unsigned short block;
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+ } ack;
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+ struct {
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+ unsigned short code;
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+ unsigned char data[512];
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+ } error;
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+ } u;
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+} tftp_packet_t;
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+
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+typedef struct tftp_state_data {
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+ tftp_state_t state;
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+ tftp_mode_t mode;
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+ tftp_error_t error;
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+ struct connectdata *conn;
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+ int sockfd;
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+ int retries;
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+ int retry_time;
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+ int retry_max;
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+ time_t start_time;
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+ time_t max_time;
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+ unsigned short block;
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+ struct sockaddr local_addr;
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+ socklen_t local_addrlen;
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+ struct sockaddr remote_addr;
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+ socklen_t remote_addrlen;
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+ int rbytes;
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+ int sbytes;
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+ tftp_packet_t rpacket;
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+ tftp_packet_t spacket;
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+} tftp_state_data_t;
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+
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+
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+/* Forward declarations */
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+static void tftp_rx(tftp_state_data_t *state, tftp_event_t event) ;
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+static void tftp_tx(tftp_state_data_t *state, tftp_event_t event) ;
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+void tftp_set_timeouts(tftp_state_data_t *state) ;
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+
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+/**********************************************************
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+ *
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+ * tftp_set_timeouts -
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+ *
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+ * Set timeouts based on state machine state.
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+ * Use user provided connect timeouts until DATA or ACK
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+ * packet is received, then use user-provided transfer timeouts
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+ *
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+ *
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+ **********************************************************/
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+void tftp_set_timeouts(tftp_state_data_t *state)
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+{
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+
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+ struct SessionHandle *data = state->conn->data;
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+ unsigned long maxtime, timeout;
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+
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+ time(&state->start_time);
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+ if(state->state == TFTP_STATE_START) {
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+ /* Compute drop-dead time */
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+ maxtime = data->set.connecttimeout?data->set.connecttimeout:30;
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+ state->max_time = state->start_time+maxtime;
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+
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+ /* Set per-block timeout to total */
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+ timeout = maxtime ;
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+
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+ /* Average restart after 5 seconds */
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+ state->retry_max = timeout/5;
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+
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+ /* Compute the re-start interval to suit the timeout */
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+ state->retry_time = timeout/state->retry_max;
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+ if(state->retry_time<1) state->retry_time=1;
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+
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+ }
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+ else {
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+
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+ /* Compute drop-dead time */
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+ maxtime = data->set.timeout?data->set.timeout:3600;
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+ state->max_time = state->start_time+maxtime;
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+
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+ /* Set per-block timeout to 10% of total */
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+ timeout = maxtime/10 ;
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+
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+ /* Average reposting an ACK after 15 seconds */
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+ state->retry_max = timeout/15;
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+ }
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+ /* But bound the total number */
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+ if(state->retry_max<3) state->retry_max=3;
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+ if(state->retry_max>50) state->retry_max=50;
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+
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+ /* Compute the re-ACK interval to suit the timeout */
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+ state->retry_time = timeout/state->retry_max;
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+ if(state->retry_time<1) state->retry_time=1;
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+
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+ infof(data, "set timeouts for state %d; Total %d, retry %d maxtry %d\n",
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+ state->state, (state->max_time-state->start_time),
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+ state->retry_time, state->retry_max);
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+}
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+
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+/**********************************************************
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+ *
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+ * tftp_set_send_first
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+ *
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+ * Event handler for the START state
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+ *
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+ **********************************************************/
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+
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+static void tftp_send_first(tftp_state_data_t *state, tftp_event_t event)
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+{
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+ int sbytes;
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+ const char *mode = "octet";
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+ char *filename = state->conn->path;
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+ struct SessionHandle *data = state->conn->data;
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+
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+ /* Set ascii mode if -B flag was used */
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+ if(data->set.ftp_ascii)
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+ mode = "netascii";
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+
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+ switch(event) {
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+
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+ case TFTP_EVENT_INIT: /* Send the first packet out */
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+ case TFTP_EVENT_TIMEOUT: /* Resend the first packet out */
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+ /* Increment the retry counter, quit if over the limit */
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+ state->retries++;
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+ if(state->retries>state->retry_max) {
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+ state->error = TFTP_ERR_NORESPONSE;
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+ state->state = TFTP_STATE_FIN;
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+ return;
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+ }
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+
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+ if(data->set.upload) {
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+ /* If we are uploading, send an WRQ */
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+ state->spacket.event = htons(TFTP_EVENT_WRQ);
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+ filename = curl_unescape(filename, strlen(filename));
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+ state->conn->upload_fromhere = (char *)state->spacket.u.data.data;
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+ if(data->set.infilesize != -1) {
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+ Curl_pgrsSetUploadSize(data, data->set.infilesize);
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+ }
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+ }
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+ else {
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+ /* If we are downloading, send an RRQ */
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+ state->spacket.event = htons(TFTP_EVENT_RRQ);
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+ }
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+ sprintf((char *)state->spacket.u.request.data, "%s%c%s%c",
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+ filename, '\0', mode, '\0');
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+ sbytes = 4 + strlen(filename) + strlen(mode);
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+ sbytes = sendto(state->sockfd, &state->spacket, sbytes, 0,
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+ state->conn->ip_addr->ai_addr,
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+ state->conn->ip_addr->ai_addrlen);
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+ if(sbytes < 0) {
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+ failf(data, "%s\n", strerror(errno));
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+ }
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+ break;
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+
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+ case TFTP_EVENT_ACK: /* Connected for transmit */
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+ infof(data, "%s\n", "Connected for transmit");
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+ state->state = TFTP_STATE_TX;
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+ tftp_set_timeouts(state);
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+ tftp_tx(state, event);
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+ break;
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+
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+ case TFTP_EVENT_DATA: /* connected for receive */
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+ infof(data, "%s\n", "Connected for receive");
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+ state->state = TFTP_STATE_RX;
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+ tftp_set_timeouts(state);
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+ tftp_rx(state, event);
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+ break;
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+
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+ case TFTP_EVENT_ERROR:
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+ state->state = TFTP_STATE_FIN;
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+ break;
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+
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+ default:
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+ failf(state->conn->data, "tftp_send_first: internal error\n");
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+ break;
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+ }
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+}
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+
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+/**********************************************************
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+ *
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+ * tftp_rx
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+ *
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+ * Event handler for the RX state
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+ *
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+ **********************************************************/
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+static void tftp_rx(tftp_state_data_t *state, tftp_event_t event)
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+{
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+ int sbytes;
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+ int rblock;
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+
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+ switch(event) {
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+
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+ case TFTP_EVENT_DATA:
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+
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+ /* Is this the block we expect? */
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+ rblock = ntohs(state->rpacket.u.data.block);
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+ if ((state->block+1) != rblock) {
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+ /* No, log it, up the retry count and fail if over the limit */
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+ infof(state->conn->data,
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+ "Received unexpected DATA packet block %d\n", rblock);
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+ state->retries++;
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+ if (state->retries>state->retry_max) {
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+ failf(state->conn->data, "tftp_rx: giving up waiting for block %d\n",
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+ state->block+1);
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+ return;
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+ }
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+ }
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+ /* This is the expected block. Reset counters and ACK it. */
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+ state->block = rblock;
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+ state->retries = 0;
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+ state->spacket.event = htons(TFTP_EVENT_ACK);
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+ state->spacket.u.ack.block = htons(state->block);
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+ sbytes = sendto(state->sockfd, &state->spacket, 4, MSG_NOSIGNAL,
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+ &state->remote_addr, state->remote_addrlen);
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+ if(sbytes < 0) {
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+ failf(state->conn->data, "%s\n", strerror(errno));
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+ }
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+
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+ /* Check if completed (That is, a less than full packet is recieved) */
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+ if (state->rbytes < (int)sizeof(state->spacket)){
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+ state->state = TFTP_STATE_FIN;
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+ }
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+ else {
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+ state->state = TFTP_STATE_RX;
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+ }
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+ break;
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+
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+ case TFTP_EVENT_TIMEOUT:
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+ /* Increment the retry count and fail if over the limit */
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+ state->retries++;
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+ infof(state->conn->data,
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+ "Timeout waiting for block %d ACK. Retries = %d\n", state->retries);
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+ if(state->retries > state->retry_max) {
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+ state->error = TFTP_ERR_TIMEOUT;
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+ state->state = TFTP_STATE_FIN;
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+ } else {
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+ /* Resend the previous ACK */
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+ sbytes = sendto(state->sockfd, &state->spacket,
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+ 4, MSG_NOSIGNAL,
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+ &state->remote_addr, state->remote_addrlen);
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+ /* Check all sbytes were sent */
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+ if(sbytes<0) {
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+ failf(state->conn->data, "%s\n", strerror(errno));
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+ }
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+ }
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+ break;
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+
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+ case TFTP_EVENT_ERROR:
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+ state->state = TFTP_STATE_FIN;
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+ break;
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+
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+ default:
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+ failf(state->conn->data, "%s\n", "tftp_rx: internal error");
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+ break;
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+ }
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+ Curl_pgrsSetDownloadCounter(state->conn->data,
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+ (curl_off_t) state->block*512);
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+}
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+
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+/**********************************************************
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+ *
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+ * tftp_tx
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+ *
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+ * Event handler for the TX state
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+ *
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+ **********************************************************/
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+static void tftp_tx(tftp_state_data_t *state, tftp_event_t event)
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+{
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+ int sbytes;
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+ int rblock;
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+
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+ switch(event) {
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+
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+
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+ case TFTP_EVENT_ACK:
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+ /* Ack the packet */
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+ rblock = ntohs(state->rpacket.u.data.block);
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+
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+ if(rblock != state->block) {
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+ /* This isn't the expected block. Log it and up the retry counter */
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+ infof(state->conn->data, "Received ACK for block %d, expecting %d\n",
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+ rblock, state->block);
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+ state->retries++;
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+ /* Bail out if over the maximum */
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+ if(state->retries>state->retry_max) {
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+ failf(state->conn->data, "%s\n",
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|
|
+ "tftp_tx: giving up waiting for block %d ack",
|
|
|
+ state->block);
|
|
|
+ }
|
|
|
+ return;
|
|
|
+ }
|
|
|
+ /* This is the expected packet. Reset the counters and send the next
|
|
|
+ block */
|
|
|
+ state->block++;
|
|
|
+ state->retries = 0;
|
|
|
+ state->spacket.event = htons(TFTP_EVENT_DATA);
|
|
|
+ state->spacket.u.ack.block = htons(state->block);
|
|
|
+ if(state->block > 1 && state->sbytes < 512) {
|
|
|
+ state->state = TFTP_STATE_FIN;
|
|
|
+ return;
|
|
|
+ }
|
|
|
+ Curl_fillreadbuffer(state->conn, 512, &state->sbytes);
|
|
|
+ sbytes = sendto(state->sockfd, &state->spacket,
|
|
|
+ 4+state->sbytes, MSG_NOSIGNAL,
|
|
|
+ &state->remote_addr, state->remote_addrlen);
|
|
|
+ /* Check all sbytes were sent */
|
|
|
+ if(sbytes<0) {
|
|
|
+ failf(state->conn->data, "%s\n", strerror(errno));
|
|
|
+ }
|
|
|
+ break;
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+ case TFTP_EVENT_TIMEOUT:
|
|
|
+ /* Increment the retry counter and log the timeout */
|
|
|
+ state->retries++;
|
|
|
+ infof(state->conn->data, "Timeout waiting for block %d ACK. "
|
|
|
+ " Retries = %d\n", state->retries);
|
|
|
+ /* Decide if we've had enough */
|
|
|
+ if(state->retries > state->retry_max) {
|
|
|
+ state->error = TFTP_ERR_TIMEOUT;
|
|
|
+ state->state = TFTP_STATE_FIN;
|
|
|
+ } else {
|
|
|
+ /* Re-send the data packet */
|
|
|
+ sbytes = sendto(state->sockfd, &state->spacket,
|
|
|
+ 4+state->sbytes, MSG_NOSIGNAL,
|
|
|
+ &state->remote_addr, state->remote_addrlen);
|
|
|
+ /* Check all sbytes were sent */
|
|
|
+ if(sbytes<0) {
|
|
|
+ failf(state->conn->data, "%s\n", strerror(errno));
|
|
|
+ }
|
|
|
+ }
|
|
|
+ break;
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+ case TFTP_EVENT_ERROR:
|
|
|
+ state->state = TFTP_STATE_FIN;
|
|
|
+ break;
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+ default:
|
|
|
+ failf(state->conn->data, "%s\n", "tftp_tx: internal error");
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ /* Update the progress meter */
|
|
|
+ Curl_pgrsSetUploadCounter(state->conn->data, (curl_off_t) state->block*512);
|
|
|
+}
|
|
|
+
|
|
|
+/**********************************************************
|
|
|
+ *
|
|
|
+ * tftp_state_machine
|
|
|
+ *
|
|
|
+ * The tftp state machine event dispatcher
|
|
|
+ *
|
|
|
+ **********************************************************/
|
|
|
+static CURLcode tftp_state_machine(tftp_state_data_t *state,
|
|
|
+ tftp_event_t event)
|
|
|
+{
|
|
|
+
|
|
|
+ switch(state->state) {
|
|
|
+ case TFTP_STATE_START:
|
|
|
+ tftp_send_first(state, event);
|
|
|
+ break;
|
|
|
+ case TFTP_STATE_RX:
|
|
|
+ tftp_rx(state, event);
|
|
|
+ break;
|
|
|
+ case TFTP_STATE_TX:
|
|
|
+ tftp_tx(state, event);
|
|
|
+ break;
|
|
|
+ case TFTP_STATE_FIN:
|
|
|
+ infof(state->conn->data, "%s\n", "TFTP finished");
|
|
|
+ break;
|
|
|
+ default:
|
|
|
+ failf(state->conn->data, "%s\n", "Internal state machine error");
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ return CURLE_OK;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+/**********************************************************
|
|
|
+ *
|
|
|
+ * Curl_tftp_connect
|
|
|
+ *
|
|
|
+ * The connect callback
|
|
|
+ *
|
|
|
+ **********************************************************/
|
|
|
+CURLcode Curl_tftp_connect(struct connectdata *conn, bool *done)
|
|
|
+{
|
|
|
+ CURLcode code;
|
|
|
+ tftp_state_data_t *state;
|
|
|
+ int rc;
|
|
|
+
|
|
|
+ if((state = conn->proto.tftp = calloc(sizeof(tftp_state_data_t), 1))==NULL) {
|
|
|
+ return CURLE_OUT_OF_MEMORY;
|
|
|
+ }
|
|
|
+
|
|
|
+ state->conn = conn;
|
|
|
+ state->sockfd = state->conn->sock[FIRSTSOCKET];
|
|
|
+ state->state = TFTP_STATE_START;
|
|
|
+
|
|
|
+ tftp_set_timeouts(state);
|
|
|
+
|
|
|
+ /* Bind to any interface, random UDP port */
|
|
|
+ rc = bind(state->sockfd, &state->local_addr, sizeof(state->local_addr));
|
|
|
+
|
|
|
+ Curl_pgrsStartNow(conn->data);
|
|
|
+
|
|
|
+ *done = TRUE;
|
|
|
+ code = CURLE_OK;
|
|
|
+ return(code);
|
|
|
+}
|
|
|
+
|
|
|
+/**********************************************************
|
|
|
+ *
|
|
|
+ * Curl_tftp_done
|
|
|
+ *
|
|
|
+ * The done callback
|
|
|
+ *
|
|
|
+ **********************************************************/
|
|
|
+CURLcode Curl_tftp_done(struct connectdata *conn, CURLcode status)
|
|
|
+{
|
|
|
+ (void)status; /* unused */
|
|
|
+
|
|
|
+ free(conn->proto.tftp);
|
|
|
+ conn->proto.tftp = NULL;
|
|
|
+ Curl_pgrsDone(conn);
|
|
|
+
|
|
|
+ return CURLE_OK;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+/**********************************************************
|
|
|
+ *
|
|
|
+ * Curl_tftp
|
|
|
+ *
|
|
|
+ * The do callback
|
|
|
+ *
|
|
|
+ * This callback handles the entire TFTP transfer
|
|
|
+ *
|
|
|
+ **********************************************************/
|
|
|
+
|
|
|
+CURLcode Curl_tftp(struct connectdata *conn, bool *done)
|
|
|
+{
|
|
|
+ struct SessionHandle *data = conn->data;
|
|
|
+ tftp_state_data_t *state = (tftp_state_data_t *)(conn->proto.tftp);
|
|
|
+ tftp_event_t event;
|
|
|
+ fd_set readset;
|
|
|
+ struct timeval tv;
|
|
|
+ CURLcode code;
|
|
|
+ int rc;
|
|
|
+ struct sockaddr fromaddr;
|
|
|
+ socklen_t fromlen;
|
|
|
+ int check_time = 0;
|
|
|
+
|
|
|
+ (void)done; /* prevent compiler warning */
|
|
|
+
|
|
|
+ /* Run the TFTP State Machine */
|
|
|
+ for(tftp_state_machine(state, TFTP_EVENT_INIT);
|
|
|
+ state->state != TFTP_STATE_FIN;
|
|
|
+ tftp_state_machine(state, event) ) {
|
|
|
+
|
|
|
+ /* Update the progress meter */
|
|
|
+ Curl_pgrsUpdate(conn);
|
|
|
+
|
|
|
+ /* Waiting on event from network or OS */
|
|
|
+ FD_ZERO(&readset);
|
|
|
+ FD_SET(state->sockfd, &readset);
|
|
|
+ tv.tv_sec=state->retry_time; tv.tv_usec=0;
|
|
|
+
|
|
|
+ restart:
|
|
|
+
|
|
|
+ /* Wait until ready to read or timeout occurs */
|
|
|
+ rc=select(state->sockfd+1, &readset, NULL, NULL, &tv);
|
|
|
+
|
|
|
+ if(rc == -1) {
|
|
|
+ /* Restart if a signal interrupt occured */
|
|
|
+ if(errno == EINTR) {
|
|
|
+ goto restart;
|
|
|
+ }
|
|
|
+
|
|
|
+ /* Otherwise, bail out */
|
|
|
+ failf(state->conn->data, "%s\n", strerror(errno));
|
|
|
+ event = TFTP_EVENT_ERROR;
|
|
|
+
|
|
|
+ }
|
|
|
+ else if (rc==0) {
|
|
|
+ /* A timeout occured */
|
|
|
+ event = TFTP_EVENT_TIMEOUT;
|
|
|
+
|
|
|
+ /* Force a look at transfer timeouts */
|
|
|
+ check_time = 0;
|
|
|
+
|
|
|
+ }
|
|
|
+ else {
|
|
|
+
|
|
|
+ /* Receive the packet */
|
|
|
+ fromlen=sizeof(fromaddr);
|
|
|
+ state->rbytes = recvfrom(state->sockfd,
|
|
|
+ (void *)&state->rpacket, sizeof(state->rpacket),
|
|
|
+ 0, &fromaddr, &fromlen);
|
|
|
+ if(state->remote_addrlen==0) {
|
|
|
+ memcpy(&state->remote_addr, &fromaddr, fromlen);
|
|
|
+ state->remote_addrlen = fromlen;
|
|
|
+ }
|
|
|
+
|
|
|
+ /* The event is given by the TFTP packet time */
|
|
|
+ event = ntohs(state->rpacket.event);
|
|
|
+
|
|
|
+ switch(event) {
|
|
|
+ case TFTP_EVENT_DATA:
|
|
|
+ Curl_client_write(data, CLIENTWRITE_BODY,
|
|
|
+ (char *)state->rpacket.u.data.data, state->rbytes-4);
|
|
|
+ break;
|
|
|
+ case TFTP_EVENT_ERROR:
|
|
|
+ state->error = ntohs(state->rpacket.u.error.code);
|
|
|
+ infof(conn->data, "%s\n", (char *)state->rpacket.u.error.data);
|
|
|
+ break;
|
|
|
+ case TFTP_EVENT_ACK:
|
|
|
+ break;
|
|
|
+ case TFTP_EVENT_RRQ:
|
|
|
+ case TFTP_EVENT_WRQ:
|
|
|
+ default:
|
|
|
+ failf(conn->data, "%s\n", "Internal error: Unexpected packet");
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /* Check for transfer timeout every 10 blocks, or after timeout */
|
|
|
+ if(check_time%10==0) {
|
|
|
+ time_t current;
|
|
|
+ time(¤t);
|
|
|
+ if(current>state->max_time) {
|
|
|
+ state->error = TFTP_ERR_TIMEOUT;
|
|
|
+ state->state = TFTP_STATE_FIN;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /* Tell curl we're done */
|
|
|
+ Curl_Transfer(conn, -1, -1, FALSE, NULL, -1, NULL);
|
|
|
+
|
|
|
+ /* If we have encountered an error */
|
|
|
+ if(state->error) {
|
|
|
+
|
|
|
+ /* Translate internal error codes to curl error codes */
|
|
|
+ switch(state->error) {
|
|
|
+ case TFTP_ERR_NOTFOUND:
|
|
|
+ code = CURLE_TFTP_NOTFOUND;
|
|
|
+ break;
|
|
|
+ case TFTP_ERR_PERM:
|
|
|
+ code = CURLE_TFTP_PERM;
|
|
|
+ break;
|
|
|
+ case TFTP_ERR_DISKFULL:
|
|
|
+ code = CURLE_TFTP_DISKFULL;
|
|
|
+ break;
|
|
|
+ case TFTP_ERR_ILLEGAL:
|
|
|
+ code = CURLE_TFTP_ILLEGAL;
|
|
|
+ break;
|
|
|
+ case TFTP_ERR_UNKNOWNID:
|
|
|
+ code = CURLE_TFTP_UNKNOWNID;
|
|
|
+ break;
|
|
|
+ case TFTP_ERR_EXISTS:
|
|
|
+ code = CURLE_TFTP_EXISTS;
|
|
|
+ break;
|
|
|
+ case TFTP_ERR_NOSUCHUSER:
|
|
|
+ code = CURLE_TFTP_NOSUCHUSER;
|
|
|
+ break;
|
|
|
+ case TFTP_ERR_TIMEOUT:
|
|
|
+ code = CURLE_OPERATION_TIMEOUTED;
|
|
|
+ break;
|
|
|
+ case TFTP_ERR_NORESPONSE:
|
|
|
+ code = CURLE_COULDNT_CONNECT;
|
|
|
+ break;
|
|
|
+ default:
|
|
|
+ code= CURLE_ABORTED_BY_CALLBACK;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ else
|
|
|
+ code = CURLE_OK;
|
|
|
+ return code;
|
|
|
+}
|
|
|
+#endif
|