#include "busybox.h"
-//#define BB_FEATURE_TFTP_DEBUG
+//#define CONFIG_FEATURE_TFTP_DEBUG
#define TFTP_BLOCKSIZE_DEFAULT 512 /* according to RFC 1350, don't change */
#define TFTP_TIMEOUT 5 /* seconds */
#define TFTP_ERROR 5
#define TFTP_OACK 6
-static const char *tftp_error_msg[] = {
+static const char *tftp_bb_error_msg[] = {
"Undefined error",
"File not found",
"Access violation",
const int tftp_cmd_get = 1;
const int tftp_cmd_put = 2;
-#ifdef BB_FEATURE_TFTP_BLOCKSIZE
+#ifdef CONFIG_FEATURE_TFTP_BLOCKSIZE
-static int tftp_blocksize_check(int blocksize, int bufsize)
+static int tftp_blocksize_check(int blocksize, int bufsize)
{
- /* Check if the blocksize is valid:
+ /* Check if the blocksize is valid:
* RFC2348 says between 8 and 65464,
* but our implementation makes it impossible
* to use blocksizes smaller than 22 octets.
*/
- if ((bufsize && (blocksize > bufsize)) ||
+ if ((bufsize && (blocksize > bufsize)) ||
(blocksize < 8) || (blocksize > 65464)) {
- error_msg("bad blocksize");
+ bb_error_msg("bad blocksize");
return 0;
}
return blocksize;
}
-static char *tftp_option_get(char *buf, int len, char *option)
+static char *tftp_option_get(char *buf, int len, char *option)
{
int opt_val = 0;
int opt_found = 0;
int k;
-
+
while (len > 0) {
/* Make sure the options are terminated correctly */
if (strcasecmp(buf, option) == 0) {
opt_found = 1;
}
- }
+ }
else {
if (opt_found) {
return buf;
}
}
-
+
k++;
-
+
buf += k;
len -= k;
-
+
opt_val ^= 1;
}
-
+
return NULL;
}
#endif
static inline int tftp(const int cmd, const struct hostent *host,
- const char *remotefile, int localfd, const int port, int tftp_bufsize)
+ const char *remotefile, int localfd, const unsigned short port, int tftp_bufsize)
{
const int cmd_get = cmd & tftp_cmd_get;
const int cmd_put = cmd & tftp_cmd_put;
int opcode = 0;
int finished = 0;
int timeout = bb_tftp_num_retries;
- int block_nr = 1;
+ unsigned short block_nr = 1;
-#ifdef BB_FEATURE_TFTP_BLOCKSIZE
+#ifdef CONFIG_FEATURE_TFTP_BLOCKSIZE
int want_option_ack = 0;
#endif
- RESERVE_BB_BUFFER(buf, tftp_bufsize + 4); /* Opcode + Block # + Data */
+ /* Can't use RESERVE_CONFIG_BUFFER here since the allocation
+ * size varies meaning BUFFERS_GO_ON_STACK would fail */
+ char *buf=xmalloc(tftp_bufsize + 4);
tftp_bufsize += 4;
if ((socketfd = socket(PF_INET, SOCK_DGRAM, 0)) < 0) {
- perror_msg("socket");
+ bb_perror_msg("socket");
return EXIT_FAILURE;
}
bind(socketfd, (struct sockaddr *)&sa, len);
sa.sin_family = host->h_addrtype;
- sa.sin_port = htons(port);
+ sa.sin_port = port;
memcpy(&sa.sin_addr, (struct in_addr *) host->h_addr,
sizeof(sa.sin_addr));
if ((cmd_get && (opcode == TFTP_RRQ)) ||
(cmd_put && (opcode == TFTP_WRQ))) {
- int too_long = 0;
+ int too_long = 0;
/* see if the filename fits into buf */
/* and fill in packet */
}
if (too_long || ((&buf[tftp_bufsize - 1] - cp) < 6)) {
- error_msg("too long remote-filename");
+ bb_error_msg("too long remote-filename");
break;
}
memcpy(cp, "octet", 6);
cp += 6;
-#ifdef BB_FEATURE_TFTP_BLOCKSIZE
+#ifdef CONFIG_FEATURE_TFTP_BLOCKSIZE
len = tftp_bufsize - 4; /* data block size */
if (len != TFTP_BLOCKSIZE_DEFAULT) {
if ((&buf[tftp_bufsize - 1] - cp) < 15) {
- error_msg("too long remote-filename");
+ bb_error_msg("too long remote-filename");
break;
}
block_nr++;
if (cmd_put && (opcode == TFTP_DATA)) {
- len = read(localfd, cp, tftp_bufsize - 4);
+ len = bb_full_read(localfd, cp, tftp_bufsize - 4);
if (len < 0) {
- perror_msg("read");
+ bb_perror_msg("read");
break;
}
}
cp += len;
- } else if (finished) {
- break;
}
}
/* send packet */
+ timeout = bb_tftp_num_retries; /* re-initialize */
do {
len = cp - buf;
-#ifdef BB_FEATURE_TFTP_DEBUG
- printf("sending %u bytes\n", len);
+#ifdef CONFIG_FEATURE_TFTP_DEBUG
+ fprintf(stderr, "sending %u bytes\n", len);
for (cp = buf; cp < &buf[len]; cp++)
- printf("%02x ", *cp);
- printf("\n");
+ fprintf(stderr, "%02x ", (unsigned char)*cp);
+ fprintf(stderr, "\n");
#endif
if (sendto(socketfd, buf, len, 0,
(struct sockaddr *) &sa, sizeof(sa)) < 0) {
- perror_msg("send");
+ bb_perror_msg("send");
len = -1;
break;
}
- /* receive packet */
+ if (finished && (opcode == TFTP_ACK)) {
+ break;
+ }
+ /* receive packet */
memset(&from, 0, sizeof(from));
fromlen = sizeof(from);
(struct sockaddr *) &from, &fromlen);
if (len < 0) {
- perror_msg("recvfrom");
+ bb_perror_msg("recvfrom");
break;
}
timeout = 0;
- if (sa.sin_port == htons(port)) {
+ if (sa.sin_port == port) {
sa.sin_port = from.sin_port;
}
if (sa.sin_port == from.sin_port) {
timeout = bb_tftp_num_retries;
case 0:
- error_msg("timeout");
+ bb_error_msg("timeout");
+ timeout--;
if (timeout == 0) {
len = -1;
- error_msg("last timeout");
- } else {
- timeout--;
+ bb_error_msg("last timeout");
}
break;
default:
- perror_msg("select");
+ bb_perror_msg("select");
len = -1;
}
} while (timeout && (len >= 0));
- if (len < 0) {
+ if ((finished) || (len < 0)) {
break;
}
opcode = ntohs(*((unsigned short *) buf));
tmp = ntohs(*((unsigned short *) &buf[2]));
-#ifdef BB_FEATURE_TFTP_DEBUG
- printf("received %d bytes: %04x %04x\n", len, opcode, tmp);
+#ifdef CONFIG_FEATURE_TFTP_DEBUG
+ fprintf(stderr, "received %d bytes: %04x %04x\n", len, opcode, tmp);
#endif
if (opcode == TFTP_ERROR) {
if (buf[4] != '\0') {
msg = &buf[4];
buf[tftp_bufsize - 1] = '\0';
- } else if (tmp < (sizeof(tftp_error_msg)
+ } else if (tmp < (sizeof(tftp_bb_error_msg)
/ sizeof(char *))) {
- msg = (char *) tftp_error_msg[tmp];
+ msg = (char *) tftp_bb_error_msg[tmp];
}
if (msg) {
- error_msg("server says: %s", msg);
+ bb_error_msg("server says: %s", msg);
}
break;
}
-#ifdef BB_FEATURE_TFTP_BLOCKSIZE
+#ifdef CONFIG_FEATURE_TFTP_BLOCKSIZE
if (want_option_ack) {
want_option_ack = 0;
char *res;
- res = tftp_option_get(&buf[2], len-2,
+ res = tftp_option_get(&buf[2], len-2,
"blksize");
if (res) {
- int foo = atoi(res);
-
- if (tftp_blocksize_check(foo,
+ int blksize = atoi(res);
+
+ if (tftp_blocksize_check(blksize,
tftp_bufsize - 4)) {
if (cmd_put) {
else {
opcode = TFTP_ACK;
}
-#ifdef BB_FEATURE_TFTP_DEBUG
- printf("using blksize %u\n");
+#ifdef CONFIG_FEATURE_TFTP_DEBUG
+ fprintf(stderr, "using blksize %u\n", blksize);
#endif
- tftp_bufsize = foo + 4;
+ tftp_bufsize = blksize + 4;
block_nr = 0;
continue;
}
}
/* FIXME:
* we should send ERROR 8 */
- error_msg("bad server option");
+ bb_error_msg("bad server option");
break;
}
- error_msg("warning: blksize not supported by server"
+ bb_error_msg("warning: blksize not supported by server"
" - reverting to 512");
tftp_bufsize = TFTP_BLOCKSIZE_DEFAULT + 4;
if (cmd_get && (opcode == TFTP_DATA)) {
if (tmp == block_nr) {
-
- len = write(localfd, &buf[4], len - 4);
+
+ len = bb_full_write(localfd, &buf[4], len - 4);
if (len < 0) {
- perror_msg("write");
+ bb_perror_msg("write");
break;
}
if (cmd_put && (opcode == TFTP_ACK)) {
- if (tmp == (block_nr - 1)) {
+ if (tmp == (unsigned short)(block_nr - 1)) {
if (finished) {
break;
}
}
}
-#ifdef BB_FEATURE_CLEAN_UP
+#ifdef CONFIG_FEATURE_CLEAN_UP
close(socketfd);
- RELEASE_BB_BUFFER(buf);
+ free(buf);
#endif
return finished ? EXIT_SUCCESS : EXIT_FAILURE;
struct hostent *host = NULL;
char *localfile = NULL;
char *remotefile = NULL;
- int port = 69;
+ int port;
int cmd = 0;
int fd = -1;
int flags = 0;
/* figure out what to pass to getopt */
-#ifdef BB_FEATURE_TFTP_BLOCKSIZE
+#ifdef CONFIG_FEATURE_TFTP_BLOCKSIZE
#define BS "b:"
#else
#define BS
#endif
-#ifdef BB_FEATURE_TFTP_GET
+#ifdef CONFIG_FEATURE_TFTP_GET
#define GET "g"
#else
-#define GET
+#define GET
#endif
-#ifdef BB_FEATURE_TFTP_PUT
+#ifdef CONFIG_FEATURE_TFTP_PUT
#define PUT "p"
#else
-#define PUT
+#define PUT
#endif
while ((opt = getopt(argc, argv, BS GET PUT "l:r:")) != -1) {
switch (opt) {
-#ifdef BB_FEATURE_TFTP_BLOCKSIZE
+#ifdef CONFIG_FEATURE_TFTP_BLOCKSIZE
case 'b':
blocksize = atoi(optarg);
if (!tftp_blocksize_check(blocksize, 0)) {
}
break;
#endif
-#ifdef BB_FEATURE_TFTP_GET
+#ifdef CONFIG_FEATURE_TFTP_GET
case 'g':
cmd = tftp_cmd_get;
- flags = O_WRONLY | O_CREAT;
+ flags = O_WRONLY | O_CREAT | O_TRUNC;
break;
#endif
-#ifdef BB_FEATURE_TFTP_PUT
+#ifdef CONFIG_FEATURE_TFTP_PUT
case 'p':
cmd = tftp_cmd_put;
flags = O_RDONLY;
break;
#endif
- case 'l':
- localfile = xstrdup(optarg);
+ case 'l':
+ localfile = bb_xstrdup(optarg);
break;
case 'r':
- remotefile = xstrdup(optarg);
+ remotefile = bb_xstrdup(optarg);
break;
}
}
if ((cmd == 0) || (optind == argc)) {
- show_usage();
+ bb_show_usage();
+ }
+ if(localfile && strcmp(localfile, "-") == 0) {
+ fd = fileno((cmd==tftp_cmd_get)? stdout : stdin);
+ }
+ if(localfile == NULL)
+ localfile = remotefile;
+ if(remotefile == NULL)
+ remotefile = localfile;
+ if (fd==-1) {
+ fd = open(localfile, flags, 0644);
}
-
- fd = open(localfile, flags, 0644);
if (fd < 0) {
- perror_msg_and_die("local file");
+ bb_perror_msg_and_die("local file");
}
host = xgethostbyname(argv[optind]);
+ port = bb_lookup_port(argv[optind + 1], "udp", 69);
- if (optind + 2 == argc) {
- port = atoi(argv[optind + 1]);
- }
-
-#ifdef BB_FEATURE_TFTP_DEBUG
- printf("using server \"%s\", remotefile \"%s\", "
+#ifdef CONFIG_FEATURE_TFTP_DEBUG
+ fprintf(stderr, "using server \"%s\", remotefile \"%s\", "
"localfile \"%s\".\n",
inet_ntoa(*((struct in_addr *) host->h_addr)),
remotefile, localfile);
result = tftp(cmd, host, remotefile, fd, port, blocksize);
-#ifdef BB_FEATURE_CLEAN_UP
- close(fd);
+#ifdef CONFIG_FEATURE_CLEAN_UP
+ if (!(fd == STDOUT_FILENO || fd == STDIN_FILENO)) {
+ close(fd);
+ }
#endif
return(result);
}
projects / oweals / busybox.git / blobdiff