*
* tftpd added by Denys Vlasenko & Vladimir Dronnikov
*
- * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
+
+//usage:#define tftp_trivial_usage
+//usage: "[OPTIONS] HOST [PORT]"
+//usage:#define tftp_full_usage "\n\n"
+//usage: "Transfer a file from/to tftp server\n"
+//usage: "\n -l FILE Local FILE"
+//usage: "\n -r FILE Remote FILE"
+//usage: IF_FEATURE_TFTP_GET(
+//usage: "\n -g Get file"
+//usage: )
+//usage: IF_FEATURE_TFTP_PUT(
+//usage: "\n -p Put file"
+//usage: )
+//usage: IF_FEATURE_TFTP_BLOCKSIZE(
+//usage: "\n -b SIZE Transfer blocks of SIZE octets"
+//usage: )
+//usage:
+//usage:#define tftpd_trivial_usage
+//usage: "[-cr] [-u USER] [DIR]"
+//usage:#define tftpd_full_usage "\n\n"
+//usage: "Transfer a file on tftp client's request\n"
+//usage: "\n"
+//usage: "tftpd should be used as an inetd service.\n"
+//usage: "tftpd's line for inetd.conf:\n"
+//usage: " 69 dgram udp nowait root tftpd tftpd -l /files/to/serve\n"
+//usage: "It also can be ran from udpsvd:\n"
+//usage: " udpsvd -vE 0.0.0.0 69 tftpd /files/to/serve\n"
+//usage: "\n -r Prohibit upload"
+//usage: "\n -c Allow file creation via upload"
+//usage: "\n -u Access files as USER"
+//usage: "\n -l Log to syslog (inetd mode requires this)"
+
#include "libbb.h"
+#include <syslog.h>
#if ENABLE_FEATURE_TFTP_GET || ENABLE_FEATURE_TFTP_PUT
#define TFTP_BLKSIZE_DEFAULT 512 /* according to RFC 1350, don't change */
#define TFTP_BLKSIZE_DEFAULT_STR "512"
-#define TFTP_TIMEOUT_MS 50
+/* Was 50 ms but users asked to bump it up a bit */
+#define TFTP_TIMEOUT_MS 100
#define TFTP_MAXTIMEOUT_MS 2000
#define TFTP_NUM_RETRIES 12 /* number of backed-off retries */
TFTPD_OPT_r = (1 << 8) * ENABLE_TFTPD,
TFTPD_OPT_c = (1 << 9) * ENABLE_TFTPD,
TFTPD_OPT_u = (1 << 10) * ENABLE_TFTPD,
+ TFTPD_OPT_l = (1 << 11) * ENABLE_TFTPD,
};
#if ENABLE_FEATURE_TFTP_GET && !ENABLE_FEATURE_TFTP_PUT
const char *file;
bb_progress_t pmt;
#endif
-};
+} FIX_ALIASING;
#define G (*(struct globals*)&bb_common_bufsiz1)
struct BUG_G_too_big {
char BUG_G_too_big[sizeof(G) <= COMMON_BUFSIZE ? 1 : -1];
#define error_pkt_str (error_pkt + 4)
#if ENABLE_FEATURE_TFTP_PROGRESS_BAR
-/* SIGALRM logic nicked from the wget applet */
-static void progress_meter(int flag)
+static void tftp_progress_update(void)
{
- /* We can be called from signal handler */
- int save_errno = errno;
-
- if (flag == -1) { /* first call to progress_meter */
- bb_progress_init(&G.pmt);
- }
-
- bb_progress_update(&G.pmt, G.file, 0, G.pos, G.size);
-
- if (flag == 0) {
- /* last call to progress_meter */
- alarm(0);
- fputc('\n', stderr);
- } else {
- if (flag == -1) { /* first call to progress_meter */
- signal_SA_RESTART_empty_mask(SIGALRM, progress_meter);
- }
- alarm(1);
- }
-
- errno = save_errno;
+ bb_progress_update(&G.pmt, 0, G.pos, G.size);
}
static void tftp_progress_init(void)
{
- progress_meter(-1);
+ bb_progress_init(&G.pmt, G.file);
+ tftp_progress_update();
}
static void tftp_progress_done(void)
{
- progress_meter(0);
+ if (is_bb_progress_inited(&G.pmt)) {
+ tftp_progress_update();
+ bb_putchar_stderr('\n');
+ bb_progress_free(&G.pmt);
+ }
}
#else
# define tftp_progress_init() ((void)0)
finished = 1;
}
cp += len;
+ IF_FEATURE_TFTP_PROGRESS_BAR(G.pos += len;)
}
send_pkt:
/* Send packet */
/* NB: send_len value is preserved in code below
* for potential resend */
- retries = TFTP_NUM_RETRIES; /* re-initialize */
+ retries = TFTP_NUM_RETRIES; /* re-initialize */
waittime_ms = TFTP_TIMEOUT_MS;
send_again:
xsendto(socket_fd, xbuf, send_len, &peer_lsa->u.sa, peer_lsa->len);
#if ENABLE_FEATURE_TFTP_PROGRESS_BAR
- if (ENABLE_TFTP && remote_file) { /* tftp */
- G.pos = (block_nr - 1) * (uoff_t)blksize;
- }
+ if (is_bb_progress_inited(&G.pmt))
+ tftp_progress_update();
#endif
/* Was it final ACK? then exit */
if (finished && (opcode == TFTP_ACK))
case 0:
retries--;
if (retries == 0) {
+ tftp_progress_done();
bb_error_msg("timeout");
goto ret; /* no err packet sent */
}
* "An option not acknowledged by the server
* must be ignored by the client and server
* as if it were never requested." */
- bb_error_msg("server only supports blocksize of 512");
+ if (blksize != TFTP_BLKSIZE_DEFAULT)
+ bb_error_msg("falling back to blocksize "TFTP_BLKSIZE_DEFAULT_STR);
blksize = TFTP_BLKSIZE_DEFAULT;
io_bufsize = TFTP_BLKSIZE_DEFAULT + 4;
}
if (sz != blksize) {
finished = 1;
}
+ IF_FEATURE_TFTP_PROGRESS_BAR(G.pos += sz;)
continue; /* send ACK */
}
/* Disabled to cope with servers with Sorcerer's Apprentice Syndrome */
peer_lsa->len = our_lsa->len;
/* Shifting to not collide with TFTP_OPTs */
- opt = option_mask32 = TFTPD_OPT | (getopt32(argv, "rcu:", &user_opt) << 8);
+ opt = option_mask32 = TFTPD_OPT | (getopt32(argv, "rcu:l", &user_opt) << 8);
argv += optind;
- if (argv[0])
- xchdir(argv[0]);
+ if (opt & TFTPD_OPT_l) {
+ openlog(applet_name, LOG_PID, LOG_DAEMON);
+ logmode = LOGMODE_SYSLOG;
+ }
+ if (argv[0]) {
+ xchroot(argv[0]);
+ }
result = recv_from_to(STDIN_FILENO, block_buf, sizeof(block_buf),
0 /* flags */,
goto err;
}
mode = local_file + strlen(local_file) + 1;
- if (mode >= block_buf + result || strcmp(mode, "octet") != 0) {
+ /* RFC 1350 says mode string is case independent */
+ if (mode >= block_buf + result || strcasecmp(mode, "octet") != 0) {
goto err;
}
# if ENABLE_FEATURE_TFTP_BLOCKSIZE
projects / oweals / busybox.git / blobdiff