+/**
+ * nmrp-flash - Netgear Unbrick Utility
+ * Copyright (C) 2016 Joseph Lehner <joseph.c.lehner@gmail.com>
+ *
+ * nmrp-flash is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * nmrp-flash is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with nmrp-flash. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
#define _BSD_SOURCE
-#include <arpa/inet.h>
-#include <sys/socket.h>
-#include <net/if.h>
#include <string.h>
#include <unistd.h>
+#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <fcntl.h>
+#include "nmrpd.h"
#define TFTP_PKT_SIZE 516
-static const char *opcode_names[] = {
+static const char *opcode_names[] = {
"RRQ", "WRQ", "DATA", "ACK", "ERR"
};
WRQ = 2,
DATA = 3,
ACK = 4,
- ERR = 5,
- NETGEAR_ERR = 0x4669
+ ERR = 5
};
+static char *x_basename(const char *path)
+{
+ char *slash, *bslash;
+
+ slash = rindex(path, '/');
+ bslash = rindex(path, '\\');
+
+ if (slash && bslash) {
+ path = 1 + (slash > bslash ? slash : bslash);
+ } else if (slash) {
+ path = 1 + slash;
+ } else if (bslash) {
+ path = 1 + bslash;
+ }
+
+ return strdup(path);
+}
+
+static const char *sanitize_netascii(char *str)
+{
+ char *p = str;
+
+ for (; *p; ++p) {
+ if (*p < 0x20 || *p > 0x7f) {
+ *p = '_';
+ }
+ }
+
+ return str;
+}
+
static inline void pkt_mknum(char *pkt, uint16_t n)
{
*(uint16_t*)pkt = htons(n);
static ssize_t tftp_recvfrom(int sock, char *pkt, struct sockaddr_in *src)
{
- static int fail = 0;
- socklen_t socklen;
ssize_t len;
len = recvfrom(sock, pkt, TFTP_PKT_SIZE, 0, NULL, NULL);
return len;
}
-static ssize_t tftp_sendto(int sock, char *pkt, size_t len,
+static ssize_t tftp_sendto(int sock, char *pkt, size_t len,
struct sockaddr_in *dst)
{
ssize_t sent;
if (msec) {
tv.tv_usec = (msec % 1000) * 1000;
tv.tv_sec = msec / 1000;
- if (setsockopt(fd, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv)) < 0) {
+ if (setsockopt(fd, SOL_SOCKET, SO_RCVTIMEO, (char*)&tv, sizeof(tv)) < 0) {
perror("setsockopt(SO_RCVTIMEO)");
return 1;
}
return 0;
}
-int tftp_put(const char *filename, const char *ipaddr, uint16_t port)
+int tftp_put(struct nmrpd_args *args)
{
- struct sockaddr_in dst, src;
- enum tftp_opcode opcode;
- struct timeval tv;
+ struct sockaddr_in addr;
+ char *filename;
uint16_t block;
ssize_t len;
- int fd, sock, err, done, i, last_len;
- char pkt[TFTP_PKT_SIZE];
+ int fd, sock, err, timeout, last_len;
+ char rx[TFTP_PKT_SIZE], tx[TFTP_PKT_SIZE];
- fd = open(filename, O_RDONLY);
+ sock = -1;
+ filename = NULL;
+
+ fd = open(args->filename, O_RDONLY);
if (fd < 0) {
perror("open");
err = fd;
goto cleanup;
}
- err = sock_set_rx_timeout(sock, 999);
+ err = sock_set_rx_timeout(sock, args->rx_timeout);
if (err) {
goto cleanup;
}
- err = !inet_aton(ipaddr, &dst.sin_addr);
- if (err) {
- perror("inet_aton");
+ if ((addr.sin_addr.s_addr = inet_addr(args->ipaddr)) == INADDR_NONE) {
+ perror("inet_addr");
+ goto cleanup;
+ }
+
+ addr.sin_family = AF_INET;
+ addr.sin_port = htons(args->port);
+
+ filename = x_basename(args->filename);
+ if (!filename) {
+ perror("x_basename");
+ goto cleanup;
+ } else if (strlen(filename) > 256) {
+ fprintf(stderr, "Filename exceeds maximum of 256 characters.\n");
goto cleanup;
}
- dst.sin_family = AF_INET;
- dst.sin_port = htons(port);
+ sanitize_netascii(filename);
+ if (verbosity > 1) {
+ printf("%s -> %s\n", args->filename, filename);
+ }
- pkt_mkwrq(pkt, filename, "octet");
+ pkt_mkwrq(tx, filename, "octet");
- len = tftp_sendto(sock, pkt, 0, &dst);
+ len = tftp_sendto(sock, tx, 0, &addr);
if (len < 0) {
err = len;
goto cleanup;
}
- len = tftp_recvfrom(sock, pkt, &dst);
+ len = tftp_recvfrom(sock, rx, &addr);
if (len < 0) {
err = len;
goto cleanup;
}
- //dst.sin_port = src.sin_port;
-
+ timeout = 0;
block = 0;
- done = 0;
last_len = -1;
do {
- if (pkt_num(pkt) == ACK && pkt_num(pkt + 2) == block) {
- ++block;
- pkt_mknum(pkt, DATA);
- pkt_mknum(pkt + 2, block);
- len = read(fd, pkt + 4, 512);
- if (len < 0) {
- perror("read");
- err = len;
- goto cleanup;
- } else if (!len) {
- done = last_len != 512;
+ if (timeout || (pkt_num(rx) == ACK && pkt_num(rx + 2) == block)) {
+ if (!timeout) {
+ ++block;
+ pkt_mknum(tx, DATA);
+ pkt_mknum(tx + 2, block);
+ len = read(fd, tx + 4, 512);
+ if (len < 0) {
+ perror("read");
+ err = len;
+ goto cleanup;
+ } else if (!len) {
+ if (last_len != 512) {
+ break;
+ }
+ }
+
+ last_len = len;
}
- last_len = len;
-
- len = tftp_sendto(sock, pkt, len, &dst);
- if (len < 0) {
- err = len;
+ err = tftp_sendto(sock, tx, len, &addr);
+ if (err < 0) {
goto cleanup;
}
- } else {
+ } else if (pkt_num(rx) != ACK) {
fprintf(stderr, "Expected ACK(%d), got ", block);
- pkt_print(pkt, stderr);
+ pkt_print(rx, stderr);
fprintf(stderr, "!\n");
- err = 1;
- goto cleanup;
}
- len = tftp_recvfrom(sock, pkt, &dst);
- if (len < 0) {
- if (len == -2) {
- fprintf(stderr, "Timeout while waiting for ACK(%d).\n", block);
+ err = tftp_recvfrom(sock, rx, &addr);
+ if (err < 0) {
+ if (err == -2) {
+ if (++timeout < 5) {
+ continue;
+ }
+ fprintf(stderr, "Timeout while waiting for ACK(%d)\n.", block);
}
- err = len;
goto cleanup;
+ } else {
+ timeout = 0;
+ err = 0;
}
- } while(!done);
+ } while(1);
err = 0;
cleanup:
+ free(filename);
+
if (fd >= 0) {
close(fd);
}
if (sock >= 0) {
+ shutdown(sock, SHUT_RDWR);
+#ifndef NMRPFLASH_WINDOWS
close(sock);
+#else
+ closesocket(sock);
+#endif
}
return err;
projects / oweals / nmrpflash.git / blobdiff