-#define _BSD_SOURCE
-#include <netinet/ether.h>
-#include <linux/if_packet.h>
-#include <arpa/inet.h>
-#include <sys/socket.h>
-#include <sys/ioctl.h>
-#include <net/if.h>
-#include <stdint.h>
+/**
+ * nmrpflash - Netgear Unbrick Utility
+ * Copyright (C) 2016 Joseph Lehner <joseph.c.lehner@gmail.com>
+ *
+ * nmrpflash 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.
+ *
+ * nmrpflash 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 nmrpflash. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include <signal.h>
+#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <stdio.h>
+#include <time.h>
+#include "nmrpd.h"
#define NMRP_HDR_LEN 6
-#define NMRP_OPT_LEN 4
-#define NMRP_MAX_OPT 6
-#define NMRP_MIN_PKT_LEN (sizeof(struct ether_header) + NMRP_HDR_LEN)
+#define NMRP_OPT_HDR_LEN 4
+#define NMRP_MIN_PKT_LEN (sizeof(struct eth_hdr) + NMRP_HDR_LEN)
#define ETH_P_NMRP 0x0912
-#define IP_LEN 4
-#define PACKED __attribute__((__packed__))
-#define MAX_LOOP_RECV 1024
-#define IS_OOO_CODE(x) (x == NMRP_C_CLOSE_REQ \
- || x == NMRP_C_KEEP_ALIVE_REQ \
- || x == NMRP_C_TFTP_UL_REQ)
+#ifndef PACKED
+#define PACKED __attribute__((__packed__))
+#endif
-extern int tftp_put(const char *filename, const char *ipaddr, uint16_t port);
-extern int sock_set_rx_timeout(int fd, unsigned msec);
+#ifdef NMRPFLASH_WINDOWS
+#define setenv(name, value, overwrite) SetEnvironmentVariable(name, value)
+#endif
enum nmrp_code {
NMRP_C_NONE = 0,
struct nmrp_opt {
uint16_t type;
uint16_t len;
- union {
- uint8_t magic[4];
- struct {
- uint8_t addr[IP_LEN];
- uint8_t mask[IP_LEN];
- } ip;
- } val;
+ char val[1];
} PACKED;
struct nmrp_msg {
uint8_t code;
uint8_t id;
uint16_t len;
- struct nmrp_opt opts[6];
- uint32_t num_opts;
+ char opts[44];
} PACKED;
struct nmrp_pkt {
- struct ether_header eh;
+ struct eth_hdr eh;
struct nmrp_msg msg;
} PACKED;
-static void msg_update_len(struct nmrp_msg *msg)
+static const char *msg_code_str(uint16_t code)
{
- uint32_t i = 0;
- msg->len = NMRP_HDR_LEN;
- for (; i != msg->num_opts; ++i) {
- msg->len += msg->opts[i].len;
+#define MSG_CODE(x) case NMRP_C_ ## x: return #x
+ static char buf[16];
+
+ switch (code) {
+ MSG_CODE(ADVERTISE);
+ MSG_CODE(CONF_REQ);
+ MSG_CODE(CONF_ACK);
+ MSG_CODE(CLOSE_REQ);
+ MSG_CODE(CLOSE_ACK);
+ MSG_CODE(KEEP_ALIVE_REQ);
+ MSG_CODE(KEEP_ALIVE_ACK);
+ MSG_CODE(TFTP_UL_REQ);
+ default:
+ snprintf(buf, sizeof(buf), "%04x", ntohs(code));
+ return buf;
}
+#undef MSG_CODE
}
-static void msg_hton(struct nmrp_msg *msg)
+static uint16_t to_region_code(const char *region)
{
- uint32_t i = 0;
-
- msg->reserved = htons(msg->reserved);
- msg->len = htons(msg->len);
-
- for (; i != msg->num_opts; ++i) {
- msg->opts[i].len = htons(msg->opts[i].len);
- msg->opts[i].type = htons(msg->opts[i].type);
- }
+#define REGION_CODE(r, c) if (!strcasecmp(region, r)) return htons(c)
+ REGION_CODE("NA", 0x0001);
+ REGION_CODE("WW", 0x0002);
+ REGION_CODE("GR", 0x0003);
+ REGION_CODE("PR", 0x0004);
+ REGION_CODE("RU", 0x0005);
+ REGION_CODE("BZ", 0x0006);
+ REGION_CODE("IN", 0x0007);
+ REGION_CODE("KO", 0x0008);
+ REGION_CODE("JP", 0x0009);
+#undef REGION_CODE
+ return 0;
}
-static void msg_hdr_ntoh(struct nmrp_msg *msg)
+static void msg_dump(struct nmrp_msg *msg)
{
- msg->reserved = ntohs(msg->reserved);
- msg->len = ntohs(msg->len);
+ int rem;
+
+ fprintf(stderr, "res=0x%04x, code=0x%02x, id=0x%02x, len=%u",
+ ntohs(msg->reserved), msg->code, msg->id, ntohs(msg->len));
+
+ rem = ntohs(msg->len) - NMRP_HDR_LEN;
+ fprintf(stderr, "%s\n", rem ? "" : " (no opts)");
}
-static int msg_ntoh(struct nmrp_msg *msg)
+static void *msg_opt(struct nmrp_msg *msg, uint16_t type, uint16_t* len)
{
- struct nmrp_opt *opt = msg->opts;
- int remaining;
-
- msg_hdr_ntoh(msg);
- remaining = msg->len - NMRP_HDR_LEN;
-
- while (remaining > 0) {
- if (remaining < NMRP_OPT_LEN) {
- fprintf(stderr, "malformed message (rem=%d)\n", remaining);
- return 1;
+ struct nmrp_opt* opt = (struct nmrp_opt*)msg->opts;
+ size_t rem = ntohs(msg->len) - NMRP_HDR_LEN;
+ uint16_t olen;
+
+ do {
+ olen = ntohs(opt->len);
+ if (olen < NMRP_OPT_HDR_LEN || olen > rem) {
+ break;
}
- opt->type = ntohs(opt->type);
- opt->len = ntohs(opt->len);
+ if (ntohs(opt->type) == type) {
+ if (len) {
+ *len = olen;
+ }
- remaining -= opt->len;
+ return opt->val;
+ }
+
+ opt = (struct nmrp_opt*)(((char *)opt) + olen);
+ rem -= olen;
+ } while (rem);
+
+ return NULL;
+}
+
+static char *msg_filename(struct nmrp_msg *msg)
+{
+ static char buf[256];
+ uint16_t len;
+ char *p = msg_opt(msg, NMRP_O_FILE_NAME, &len);
+ if (p) {
+ len = MIN(sizeof(buf) - 1, len);
+ memcpy(buf, p, len);
+ buf[len] = '\0';
+ return buf;
}
- return 0;
+ return NULL;
}
-static void msg_dump(struct nmrp_msg *msg)
+static inline void msg_init(struct nmrp_msg *msg, uint16_t code)
+{
+ memset(msg, 0, sizeof(*msg));
+ msg->len = htons(NMRP_HDR_LEN);
+ msg->code = code;
+}
+
+static char *msg_mkopt(struct nmrp_msg *msg, char *p, uint16_t type, const void *val, size_t len)
{
- struct nmrp_opt *opt;
- int remain_len, len, i;
+ struct nmrp_opt* opt = (struct nmrp_opt*)p;
- printf("res=0x%04x, code=0x%02x, id=0x%02x, len=%u", msg->reserved,
- msg->code, msg->id, msg->len);
+ len &= 0xffff;
- remain_len = msg->len - NMRP_HDR_LEN;
- printf("%s\n", remain_len ? "" : " (no opts)");
+ msg->len = ntohs(msg->len);
- opt = msg->opts;
+ if ((msg->len + len > sizeof(*msg))) {
+ fprintf(stderr, "Error: invalid option - this is a bug\n");
+ exit(1);
+ }
- while (remain_len > 0) {
- len = opt->len;
- printf(" opt type=%u, len=%u", opt->type, len);
- for (i = 0; i != len - NMRP_OPT_LEN; ++i) {
- if (!(i % 16)) {
- printf("\n ");
- }
+ opt->type = htons(type);
+ opt->len = NMRP_OPT_HDR_LEN + len;
- printf("%02x ", ((char*)&opt->val)[i] & 0xff);
- }
- printf("\n");
- remain_len -= len;
- opt = (struct nmrp_opt*)(((char*)opt) + len);
+ if (val) {
+ memcpy(opt->val, val, len);
}
+
+ msg->len += opt->len;
+ p += opt->len;
+
+ msg->len = htons(msg->len);
+ opt->len = htons(opt->len);
+
+ return p;
}
-static int intf_get_index_and_addr(int fd, const char *name, int *index,
- uint8_t *hwaddr)
+static void msg_mkadvertise(struct nmrp_msg *msg, const char *magic)
{
- struct ifreq ifr;
+ msg_init(msg, NMRP_C_ADVERTISE);
+ msg_mkopt(msg, msg->opts, NMRP_O_MAGIC_NO, magic, strlen(magic));
+}
- memset(&ifr, 0, sizeof(ifr));
- strncpy(ifr.ifr_name, name, IFNAMSIZ - 1);
+static void msg_mkconfack(struct nmrp_msg *msg, uint32_t ipaddr, uint32_t ipmask, uint16_t region)
+{
+ char *p;
+ uint32_t ip[2] = { ipaddr, ipmask };
- if (ioctl(fd, SIOCGIFINDEX, &ifr) < 0) {
- perror("ioctl(SIOCGIFINDEX)");
- return -1;
- }
- *index = ifr.ifr_ifindex;
+ msg_init(msg, NMRP_C_CONF_ACK);
+ p = msg_mkopt(msg, msg->opts, NMRP_O_DEV_IP, &ip, 8);
+ p = msg_mkopt(msg, p, NMRP_O_FW_UP, NULL, 0);
- if (ioctl(fd, SIOCGIFHWADDR, &ifr) < 0) {
- perror("ioctl(SIOCGIFHWADDR)");
- return -1;
+#ifdef NMRPFLASH_SET_REGION
+ if (region) {
+ p = msg_mkopt(msg, p, NMRP_O_DEV_REGION, ®ion, 2);
}
- memcpy(hwaddr, ifr.ifr_hwaddr.sa_data, ETH_ALEN);
+#endif
+}
- return 0;
+#ifdef NMRPFLASH_FUZZ
+#define NMRP_INITIAL_TIMEOUT 0
+#define ethsock_create(a, b) ((struct ethsock*)1)
+#define ethsock_get_hwaddr(a) ethsock_get_hwaddr_fake(a)
+#define ethsock_recv(sock, buf, len) read(STDIN_FILENO, buf, len)
+#define ethsock_send(a, b, c) (0)
+#define ethsock_set_timeout(a, b) (0)
+#define ethsock_arp_add(a, b, c, d) (0)
+#define ethsock_arp_del(a, b) (0)
+#define ethsock_ip_add(a, b, c, d) (0)
+#define ethsock_ip_del(a, b) (0)
+#define ethsock_close(a) (0)
+#define tftp_put(a) (0)
+
+static uint8_t *ethsock_get_hwaddr_fake(struct ethsock* sock)
+{
+ static uint8_t hwaddr[6] = { 0xfa, 0xfa, 0xfa, 0xfa, 0xfa, 0xfa };
+ return hwaddr;
}
+#else
+#define NMRP_INITIAL_TIMEOUT 60
+#endif
-static int pkt_send(int fd, struct sockaddr_ll *addr, struct nmrp_pkt *pkt)
+static int pkt_send(struct ethsock *sock, struct nmrp_pkt *pkt)
{
- size_t len = ntohs(pkt->msg.len) + sizeof(pkt->eh);
- return sendto(fd, pkt, len, 0, (struct sockaddr*)addr, sizeof(*addr));
+ return ethsock_send(sock, pkt, sizeof(*pkt));
}
-static int pkt_recv(int fd, struct nmrp_pkt *pkt)
+static int pkt_recv(struct ethsock *sock, struct nmrp_pkt *pkt)
{
- struct sockaddr_ll from;
- socklen_t addrlen;
- ssize_t bytes, len;
+ ssize_t bytes, mlen;
memset(pkt, 0, sizeof(*pkt));
- bytes = recvfrom(fd, pkt, NMRP_MIN_PKT_LEN, MSG_PEEK,
- (struct sockaddr*)&from, &addrlen);
-
+ bytes = ethsock_recv(sock, pkt, sizeof(*pkt));
if (bytes < 0) {
- if (errno == EAGAIN) {
- return 2;
- }
- perror("recvfrom(pkt)");
- return 1;
- } else if (ntohs(pkt->eh.ether_type) != ETH_P_NMRP) {
- return 3;
- } else if (bytes < NMRP_MIN_PKT_LEN) {
- fprintf(stderr, "short packet (%zi bytes)\n", bytes);
return 1;
+ } else if (!bytes) {
+ return 2;
}
- msg_hdr_ntoh(&pkt->msg);
- len = pkt->msg.len + sizeof(pkt->eh);
+ mlen = ntohs(pkt->msg.len);
- bytes = recvfrom(fd, pkt, len, MSG_DONTWAIT, NULL, NULL);
- if (bytes < 0) {
- perror("recvfrom(msg)");
- return 1;
- } else if (bytes != len) {
- fprintf(stderr, "short message (%zi bytes)\n", len);
+ if (bytes < (mlen + sizeof(pkt->eh))
+ || bytes < NMRP_MIN_PKT_LEN
+ || mlen < NMRP_HDR_LEN) {
+ fprintf(stderr, "Short packet (%d raw, %d message)\n",
+ (int)bytes, (int)mlen);
return 1;
- } else {
- if (msg_ntoh(&pkt->msg) != 0) {
+ } else if (mlen > sizeof(pkt->msg)) {
+ printf("Truncating %d byte message.\n", (int)mlen);
+ pkt->msg.len = htons(sizeof(pkt->msg));
+ }
+
+ return 0;
+}
+
+static int mac_parse(const char *str, uint8_t *hwaddr)
+{
+ int i;
+ unsigned data[6];
+
+ sscanf(str, "%02x:%02x:%02x:%02x:%02x:%02x%n",
+ data, data + 1, data + 2, data + 3, data + 4, data + 5, &i);
+
+ if (i == strlen(str)) {
+ for (i = 0; i != 6; ++i) {
+ if (data[i] > 255) {
+ break;
+ }
+
+ hwaddr[i] = data[i] & 0xff;
+ }
+
+ if (i == 6) {
return 1;
}
- msg_dump(&pkt->msg);
+ }
+ return 0;
+}
+struct is_valid_ip_arg
+{
+ struct in_addr *ipaddr;
+ struct in_addr *ipmask;
+ int result;
+};
+
+static int is_valid_ip_cb(struct ethsock_ip_callback_args *args)
+{
+#define SUBNET(x) ((x)->ipaddr->s_addr & (x)->ipmask->s_addr)
+ struct is_valid_ip_arg *arg = args->arg;
+ if (SUBNET(args) == SUBNET(arg)) {
+ arg->result = args->ipaddr->s_addr != arg->ipaddr->s_addr;
return 0;
}
return 1;
+#undef SUBNET
}
-static int sock_bind_to_intf(int fd, const char *name)
+static int is_valid_ip(struct ethsock *sock, struct in_addr *ipaddr,
+ struct in_addr *ipmask)
{
- struct ifreq ifr;
-
- strncpy(ifr.ifr_name, name, IFNAMSIZ - 1);
- if (setsockopt(fd, SOL_SOCKET, SO_BINDTODEVICE, &ifr, sizeof(ifr)) < 0) {
- perror("setsockopt(SO_BINDTODEVICE)");
- return 1;
- }
-
- return 0;
+ int status;
+ struct is_valid_ip_arg arg = {
+ .ipaddr = ipaddr,
+ .ipmask = ipmask,
+ .result = 0
+ };
+
+ status = ethsock_for_each_ip(sock, is_valid_ip_cb, &arg);
+ return status < 0 ? status : arg.result;
}
-//static const char *arg_filename = "EX2700-V1.0.1.8.img";
-static unsigned arg_rx_timeout = 250;
-static unsigned arg_ul_timeout = 60000;
-static const char *arg_filename = "bad.img";
-static const char *arg_ipaddr = "192.168.2.2";
-static const char *arg_ipmask = "255.255.255.0";
-static const char *arg_intf = "enp4s0";
-static uint16_t arg_port = 69;
-#if 0
-static uint8_t target[ETH_ALEN] = { 0xa4, 0x2b, 0x8c, 0x10, 0xc2, 0x96 };
-#else
-static uint8_t target[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
-#endif
+static void sigh(int sig)
+{
+ g_interrupted = 1;
+}
static const char *spinner = "\\|/-";
-int main(int argc, char **argv)
+int nmrp_do(struct nmrpd_args *args)
{
struct nmrp_pkt tx, rx;
- struct sockaddr_ll addr;
- uint8_t hwaddr[ETH_ALEN];
- int i, fd, err, ulreqs, expect;
+ uint8_t *src, dest[6];
+ uint16_t region;
+ char *filename;
+ time_t beg;
+ int i, status, ulreqs, expect, upload_ok, autoip;
+ struct ethsock *sock;
+ struct ethsock_ip_undo *ip_undo = NULL;
+ struct ethsock_arp_undo *arp_undo = NULL;
+ uint32_t intf_addr;
+ void (*sigh_orig)(int);
+ struct in_addr ipaddr;
+ struct in_addr ipmask;
+
+ if (args->op != NMRP_UPLOAD_FW) {
+ fprintf(stderr, "Operation not implemented.\n");
+ return 1;
+ }
- err = 1;
+ if (!mac_parse(args->mac, dest)) {
+ fprintf(stderr, "Invalid MAC address '%s'.\n", args->mac);
+ return 1;
+ }
- fd = socket(AF_PACKET, SOCK_RAW, htons(ETH_P_NMRP));
- if (fd == -1) {
- perror("socket");
+ ipmask.s_addr = inet_addr(args->ipmask);
+ if (ipmask.s_addr == INADDR_NONE
+ || netmask(bitcount(ipmask.s_addr)) != ipmask.s_addr) {
+ fprintf(stderr, "Invalid subnet mask '%s'.\n", args->ipmask);
return 1;
}
- if (intf_get_index_and_addr(fd, arg_intf, &addr.sll_ifindex, hwaddr)) {
+ if (!args->ipaddr) {
+ autoip = true;
+ /* The MAC of the device that was used to test this utility starts
+ * with a4:2b:8c, hence 164 (0xa4) and 183 (0x2b + 0x8c)
+ */
+ args->ipaddr = "10.164.183.252";
+
+ if (!args->ipaddr_intf) {
+ args->ipaddr_intf = "10.164.183.253";
+ }
+ } else if (args->ipaddr_intf) {
+ autoip = true;
+ } else {
+ autoip = false;
+ }
+
+ if ((ipaddr.s_addr = inet_addr(args->ipaddr)) == INADDR_NONE) {
+ fprintf(stderr, "Invalid IP address '%s'.\n", args->ipaddr);
return 1;
}
- if (sock_bind_to_intf(fd, arg_intf)) {
+ if (args->ipaddr_intf && (intf_addr = inet_addr(args->ipaddr_intf)) == INADDR_NONE) {
+ fprintf(stderr, "Invalid IP address '%s'.\n", args->ipaddr_intf);
return 1;
}
- if (sock_set_rx_timeout(fd, arg_rx_timeout)) {
+ if (args->file_local && strcmp(args->file_local, "-") && access(args->file_local, R_OK) == -1) {
+ fprintf(stderr, "Error accessing file '%s'.\n", args->file_local);
return 1;
}
- addr.sll_family = PF_PACKET;
- //addr.sll_hatype = ARPHRD_ETHER;
- //addr.sll_pkttype = PACKET_OTHERHOST;
- addr.sll_protocol = htons(ETH_P_NMRP);
- addr.sll_halen = ETH_ALEN;
- memcpy(addr.sll_addr, target, ETH_ALEN);
+ if (args->file_remote) {
+ if (!tftp_is_valid_filename(args->file_remote)) {
+ fprintf(stderr, "Invalid remote filename '%s'.\n",
+ args->file_remote);
+ return 1;
+ }
+ }
- memcpy(tx.eh.ether_shost, hwaddr, ETH_ALEN);
- memcpy(tx.eh.ether_dhost, target, ETH_ALEN);
- tx.eh.ether_type = htons(ETH_P_NMRP);
+ if (args->region) {
+ region = to_region_code(args->region);
+ if (!region) {
+ fprintf(stderr, "Invalid region code '%s'.\n", args->region);
+ return 1;
+ }
+ } else {
+ region = 0;
+ }
+
+ status = 1;
+
+ sock = ethsock_create(args->intf, ETH_P_NMRP);
+ if (!sock) {
+ return 1;
+ }
- tx.msg.reserved = 0;
- tx.msg.code = NMRP_C_ADVERTISE;
- tx.msg.id = 0;
- tx.msg.num_opts = 1;
- tx.msg.opts[0].type = NMRP_O_MAGIC_NO;
- tx.msg.opts[0].len = NMRP_OPT_LEN + 4;
- tx.msg.opts[0].val.magic[0] = 'N';
- tx.msg.opts[0].val.magic[1] = 'T';
- tx.msg.opts[0].val.magic[2] = 'G';
- tx.msg.opts[0].val.magic[3] = 'R';
+ sigh_orig = signal(SIGINT, sigh);
- msg_update_len(&tx.msg);
- msg_hton(&tx.msg);
+ if (!autoip) {
+ status = is_valid_ip(sock, &ipaddr, &ipmask);
+ if (status <= 0) {
+ if (!status) {
+ fprintf(stderr, "Address %s/%s cannot be used on interface %s.\n",
+ args->ipaddr, args->ipmask, args->intf);
+ }
+ goto out;
+ }
+ } else {
+ if (verbosity) {
+ printf("Adding %s to interface %s.\n", args->ipaddr_intf, args->intf);
+ }
+
+ if (ethsock_ip_add(sock, intf_addr, ipmask.s_addr, &ip_undo) != 0) {
+ goto out;
+ }
+ }
+
+ if (ethsock_set_timeout(sock, args->rx_timeout)) {
+ goto out;
+ }
+
+ src = ethsock_get_hwaddr(sock);
+ if (!src) {
+ goto out;
+ }
+
+ memcpy(tx.eh.ether_shost, src, 6);
+ memcpy(tx.eh.ether_dhost, dest, 6);
+ tx.eh.ether_type = htons(ETH_P_NMRP);
+
+ msg_mkadvertise(&tx.msg, "NTGR");
i = 0;
+ upload_ok = 0;
+ beg = time_monotonic();
- while (1) {
- printf("\rAdvertising NMRP server on %s ... %c", arg_intf, spinner[i]);
+ while (!g_interrupted) {
+ printf("\rAdvertising NMRP server on %s ... %c",
+ args->intf, spinner[i]);
fflush(stdout);
i = (i + 1) & 3;
- if (pkt_send(fd, &addr, &tx) < 0) {
- perror("sendto");
+ if (pkt_send(sock, &tx) < 0) {
+ xperror("sendto");
goto out;
}
- err = pkt_recv(fd, &rx);
- if (err == 0) {
- break;
- } else if (err == 1) {
- printf("ERR\n");
+ status = pkt_recv(sock, &rx);
+ if (status == 0) {
+ if (memcmp(rx.eh.ether_dhost, src, 6) == 0) {
+ break;
+ } else if (verbosity) {
+ printf("\nIgnoring bogus response: %s -> %s.\n",
+ mac_to_str(rx.eh.ether_shost),
+ mac_to_str(rx.eh.ether_dhost));
+ }
+ } else if (status == 1) {
goto out;
+ } else {
+ /* because we don't want nmrpflash's exit status to be zero */
+ status = 1;
+ if ((time_monotonic() - beg) >= NMRP_INITIAL_TIMEOUT) {
+ printf("\nNo response after 60 seconds. Bailing out.\n");
+ goto out;
+ }
}
}
expect = NMRP_C_CONF_REQ;
ulreqs = 0;
- do {
+ while (!g_interrupted) {
if (expect != NMRP_C_NONE && rx.msg.code != expect) {
- fprintf(stderr, "Received code 0x%02x while waiting for 0x%02x!\n",
- rx.msg.code, expect);
+ fprintf(stderr, "Received %s while waiting for %s!\n",
+ msg_code_str(rx.msg.code), msg_code_str(expect));
}
- tx.msg.code = NMRP_C_NONE;
- tx.msg.reserved = 0;
- tx.msg.id = 0;
- tx.msg.num_opts = 0;
- tx.msg.len = 0;
+ msg_init(&tx.msg, NMRP_C_NONE);
- err = 1;
+ status = 1;
switch (rx.msg.code) {
+ case NMRP_C_ADVERTISE:
+ printf("Received NMRP advertisement from %s.\n",
+ mac_to_str(rx.eh.ether_shost));
+ status = 1;
+ goto out;
case NMRP_C_CONF_REQ:
- tx.msg.code = NMRP_C_CONF_ACK;
- tx.msg.num_opts = 2;
-
- tx.msg.opts[0].type = NMRP_O_DEV_IP;
- tx.msg.opts[0].len = NMRP_OPT_LEN + 2 * IP_LEN;
+ msg_mkconfack(&tx.msg, ipaddr.s_addr, ipmask.s_addr, region);
+ expect = NMRP_C_TFTP_UL_REQ;
- inet_aton(arg_ipaddr,
- (struct in_addr*)tx.msg.opts[0].val.ip.addr);
- inet_aton(arg_ipmask,
- (struct in_addr*)tx.msg.opts[0].val.ip.mask);
+ printf("Received configuration request from %s.\n",
+ mac_to_str(rx.eh.ether_shost));
- tx.msg.opts[1].type = NMRP_O_FW_UP;
- tx.msg.opts[1].len = NMRP_OPT_LEN;
+ memcpy(tx.eh.ether_dhost, rx.eh.ether_shost, 6);
- expect = NMRP_C_TFTP_UL_REQ;
+ printf("Sending configuration: %s, netmask %s.\n",
+ args->ipaddr, args->ipmask);
- printf("Configuration request received from "
- "%02x:%02x:%02x:%02x:%02x:%02x.\n",
- rx.eh.ether_shost[0], rx.eh.ether_shost[1],
- rx.eh.ether_shost[2], rx.eh.ether_shost[3],
- rx.eh.ether_shost[4], rx.eh.ether_shost[5]);
- printf("Sending configuration: ip %s, mask %s.\n", arg_ipaddr,
- arg_ipmask);
+ if (ethsock_arp_add(sock, rx.eh.ether_shost, ipaddr.s_addr, &arp_undo) != 0) {
+ goto out;
+ }
break;
case NMRP_C_TFTP_UL_REQ:
- if (++ulreqs > 5) {
- fprintf(stderr, "Device re-requested file upload %d "
- "times; aborting.\n", ulreqs);
- tx.msg.code = NMRP_C_CLOSE_REQ;
+ if (!upload_ok) {
+ if (++ulreqs > 5) {
+ printf("Bailing out after %d upload requests.\n",
+ ulreqs);
+ tx.msg.code = NMRP_C_CLOSE_REQ;
+ break;
+ }
+ } else {
+ if (verbosity) {
+ printf("Ignoring extra upload request.\n");
+ }
+ ethsock_set_timeout(sock, args->ul_timeout);
+ tx.msg.code = NMRP_C_KEEP_ALIVE_REQ;
break;
}
- printf("Uploading %s ... ", arg_filename);
- fflush(stdout);
- err = tftp_put(arg_filename, arg_ipaddr, arg_port);
- if (!err) {
- printf("OK\nWaiting for router to respond.\n");
- sock_set_rx_timeout(fd, arg_ul_timeout);
- expect = NMRP_C_CLOSE_REQ;
- } else if (err != -3) {
+
+ filename = msg_filename(&rx.msg);
+ if (filename) {
+ if (!args->file_remote) {
+ args->file_remote = filename;
+ }
+ printf("Received upload request: filename '%s'.\n", filename);
+ } else if (!args->file_remote) {
+ args->file_remote = leafname(args->file_local);
+ printf("Received upload request without filename.\n");
+ }
+
+ status = 0;
+
+ if (args->tftpcmd) {
+ printf("Executing '%s' ... \n", args->tftpcmd);
+ setenv("IP", inet_ntoa(ipaddr), 1);
+ setenv("PORT", lltostr(args->port, 10), 1);
+ setenv("MAC", mac_to_str(rx.eh.ether_shost), 1);
+ setenv("NETMASK", inet_ntoa(ipmask), 1);
+ //setenv("FILENAME", args->file_remote ? args->file_remote : "", 1);
+ status = system(args->tftpcmd);
+ }
+
+ if (!status && args->file_local) {
+ if (!autoip) {
+ status = is_valid_ip(sock, &ipaddr, &ipmask);
+ if (status < 0) {
+ goto out;
+ } else if (!status) {
+ printf("IP address of %s has changed. Please assign a "
+ "static ip to the interface.\n", args->intf);
+ tx.msg.code = NMRP_C_CLOSE_REQ;
+ break;
+ }
+ }
+
+ if (verbosity) {
+ printf("Using remote filename '%s'.\n",
+ args->file_remote);
+ }
+
+ if (!strcmp(args->file_local, "-")) {
+ printf("Uploading from stdin ... ");
+ } else {
+ printf("Uploading %s ... ", leafname(args->file_local));
+ }
+ fflush(stdout);
+ if (!(status = tftp_put(args))) {
+ printf("OK\n");
+ }
+
+ }
+
+ if (!status) {
+ printf("Waiting for remote to respond.\n");
+ upload_ok = 1;
+ ethsock_set_timeout(sock, args->ul_timeout);
+ tx.msg.code = NMRP_C_KEEP_ALIVE_REQ;
+ expect = NMRP_C_NONE;
+ } else if (status == -2) {
+ expect = NMRP_C_TFTP_UL_REQ;
+ } else {
goto out;
}
+
break;
case NMRP_C_KEEP_ALIVE_REQ:
tx.msg.code = NMRP_C_KEEP_ALIVE_ACK;
+ ethsock_set_timeout(sock, args->ul_timeout);
+ printf("Received keep-alive request.\n");
break;
case NMRP_C_CLOSE_REQ:
tx.msg.code = NMRP_C_CLOSE_ACK;
break;
case NMRP_C_CLOSE_ACK:
- err = 0;
+ status = 0;
goto out;
default:
- fprintf(stderr, "Unhandled message code 0x%02x!\n",
+ fprintf(stderr, "Unknown message code 0x%02x!\n",
rx.msg.code);
+ msg_dump(&rx.msg);
}
if (tx.msg.code != NMRP_C_NONE) {
- msg_update_len(&tx.msg);
- msg_hton(&tx.msg);
+ if (pkt_send(sock, &tx) < 0) {
+ xperror("sendto");
+ goto out;
+ }
- if (pkt_send(fd, &addr, &tx) < 0) {
- perror("sendto");
+ if (tx.msg.code == NMRP_C_CLOSE_REQ) {
goto out;
}
}
if (rx.msg.code == NMRP_C_CLOSE_REQ) {
- printf("Remote requested to close connection.\n");
+ printf("Remote finished. Closing connection.\n");
break;
}
- err = pkt_recv(fd, &rx);
- if (err) {
- if (err == 2) {
- fprintf(stderr, "Timeout while waiting for 0x%02x.\n", expect);
+ status = pkt_recv(sock, &rx);
+ if (status) {
+ if (status == 2) {
+ fprintf(stderr, "Timeout while waiting for %s.\n",
+ msg_code_str(expect));
}
goto out;
}
- sock_set_rx_timeout(fd, arg_rx_timeout);
+ ethsock_set_timeout(sock, args->rx_timeout);
- } while (1);
+ }
- err = 0;
+ if (!g_interrupted) {
+ status = 0;
+ if (ulreqs) {
+ printf("Reboot your device now.\n");
+ } else {
+ printf("No upload request received.\n");
+ }
+ }
out:
- close(fd);
-
- return err;
+ signal(SIGINT, sigh_orig);
+ ethsock_arp_del(sock, &arp_undo);
+ ethsock_ip_del(sock, &ip_undo);
+ ethsock_close(sock);
+ return status;
}
projects / oweals / nmrpflash.git / blobdiff