--- /dev/null
+#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>
+#include <string.h>
+#include <unistd.h>
+#include <errno.h>
+#include <stdio.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 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)
+
+extern int tftp_put(const char *filename, const char *ipaddr, uint16_t port);
+extern int sock_set_rx_timeout(int fd, unsigned msec);
+
+enum nmrp_code {
+ NMRP_C_NONE = 0,
+ NMRP_C_ADVERTISE = 1,
+ NMRP_C_CONF_REQ = 2,
+ NMRP_C_CONF_ACK = 3,
+ NMRP_C_CLOSE_REQ = 4,
+ NMRP_C_CLOSE_ACK = 5,
+ NMRP_C_KEEP_ALIVE_REQ = 6,
+ NMRP_C_KEEP_ALIVE_ACK = 7,
+ NMRP_C_TFTP_UL_REQ = 16
+};
+
+enum nmrp_opt_type {
+ NMRP_O_MAGIC_NO = 0x0001,
+ NMRP_O_DEV_IP = 0x0002,
+ NMRP_O_DEV_REGION = 0x0004,
+ NMRP_O_FW_UP = 0x0101,
+ NMRP_O_ST_UP = 0x0102,
+ NMRP_O_FILE_NAME = 0x0181
+};
+
+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;
+} PACKED;
+
+struct nmrp_msg {
+ uint16_t reserved;
+ uint8_t code;
+ uint8_t id;
+ uint16_t len;
+ struct nmrp_opt opts[6];
+ uint32_t num_opts;
+} PACKED;
+
+struct nmrp_pkt {
+ struct ether_header eh;
+ struct nmrp_msg msg;
+} PACKED;
+
+static void msg_update_len(struct nmrp_msg *msg)
+{
+ uint32_t i = 0;
+ msg->len = NMRP_HDR_LEN;
+ for (; i != msg->num_opts; ++i) {
+ msg->len += msg->opts[i].len;
+ }
+}
+
+static void msg_hton(struct nmrp_msg *msg)
+{
+ 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);
+ }
+}
+
+static void msg_hdr_ntoh(struct nmrp_msg *msg)
+{
+ msg->reserved = ntohs(msg->reserved);
+ msg->len = ntohs(msg->len);
+}
+
+static int msg_ntoh(struct nmrp_msg *msg)
+{
+ 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;
+ }
+
+ opt->type = ntohs(opt->type);
+ opt->len = ntohs(opt->len);
+
+ remaining -= opt->len;
+ }
+
+ return 0;
+}
+
+static void msg_dump(struct nmrp_msg *msg)
+{
+ struct nmrp_opt *opt;
+ int remain_len, len, i;
+
+ printf("res=0x%04x, code=0x%02x, id=0x%02x, len=%u", msg->reserved,
+ msg->code, msg->id, msg->len);
+
+ remain_len = msg->len - NMRP_HDR_LEN;
+ printf("%s\n", remain_len ? "" : " (no opts)");
+
+ opt = msg->opts;
+
+ 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 ");
+ }
+
+ printf("%02x ", ((char*)&opt->val)[i] & 0xff);
+ }
+ printf("\n");
+ remain_len -= len;
+ opt = (struct nmrp_opt*)(((char*)opt) + len);
+ }
+}
+
+static int intf_get_index_and_addr(int fd, const char *name, int *index,
+ uint8_t *hwaddr)
+{
+ struct ifreq ifr;
+
+ memset(&ifr, 0, sizeof(ifr));
+ strncpy(ifr.ifr_name, name, IFNAMSIZ - 1);
+
+ if (ioctl(fd, SIOCGIFINDEX, &ifr) < 0) {
+ perror("ioctl(SIOCGIFINDEX)");
+ return -1;
+ }
+ *index = ifr.ifr_ifindex;
+
+ if (ioctl(fd, SIOCGIFHWADDR, &ifr) < 0) {
+ perror("ioctl(SIOCGIFHWADDR)");
+ return -1;
+ }
+ memcpy(hwaddr, ifr.ifr_hwaddr.sa_data, ETH_ALEN);
+
+ return 0;
+}
+
+static int pkt_send(int fd, struct sockaddr_ll *addr, 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));
+}
+
+static int pkt_recv(int fd, struct nmrp_pkt *pkt)
+{
+ struct sockaddr_ll from;
+ socklen_t addrlen;
+ ssize_t bytes, len;
+
+ memset(pkt, 0, sizeof(*pkt));
+ bytes = recvfrom(fd, pkt, NMRP_MIN_PKT_LEN, MSG_PEEK,
+ (struct sockaddr*)&from, &addrlen);
+
+ 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;
+ }
+
+ msg_hdr_ntoh(&pkt->msg);
+ len = pkt->msg.len + sizeof(pkt->eh);
+
+ 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);
+ return 1;
+ } else {
+ if (msg_ntoh(&pkt->msg) != 0) {
+ return 1;
+ }
+ msg_dump(&pkt->msg);
+
+ return 0;
+ }
+
+ return 1;
+}
+
+static int sock_bind_to_intf(int fd, const char *name)
+{
+ 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;
+}
+
+//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 const char *spinner = "\\|/-";
+
+int main(int argc, char **argv)
+{
+ struct nmrp_pkt tx, rx;
+ struct sockaddr_ll addr;
+ uint8_t hwaddr[ETH_ALEN];
+ int i, fd, err, ulreqs, expect;
+
+ err = 1;
+
+ fd = socket(AF_PACKET, SOCK_RAW, htons(ETH_P_NMRP));
+ if (fd == -1) {
+ perror("socket");
+ return 1;
+ }
+
+ if (intf_get_index_and_addr(fd, arg_intf, &addr.sll_ifindex, hwaddr)) {
+ return 1;
+ }
+
+ if (sock_bind_to_intf(fd, arg_intf)) {
+ return 1;
+ }
+
+ if (sock_set_rx_timeout(fd, arg_rx_timeout)) {
+ 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);
+
+ memcpy(tx.eh.ether_shost, hwaddr, ETH_ALEN);
+ memcpy(tx.eh.ether_dhost, target, ETH_ALEN);
+ tx.eh.ether_type = htons(ETH_P_NMRP);
+
+ 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';
+
+ msg_update_len(&tx.msg);
+ msg_hton(&tx.msg);
+
+ i = 0;
+
+ while (1) {
+ printf("\rAdvertising NMRP server on %s ... %c", arg_intf, spinner[i]);
+ fflush(stdout);
+ i = (i + 1) & 3;
+
+ if (pkt_send(fd, &addr, &tx) < 0) {
+ perror("sendto");
+ goto out;
+ }
+
+ err = pkt_recv(fd, &rx);
+ if (err == 0) {
+ break;
+ } else if (err == 1) {
+ printf("ERR\n");
+ goto out;
+ }
+ }
+
+ printf("\n");
+
+ expect = NMRP_C_CONF_REQ;
+ ulreqs = 0;
+
+ do {
+ 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);
+ }
+
+ tx.msg.code = NMRP_C_NONE;
+ tx.msg.reserved = 0;
+ tx.msg.id = 0;
+ tx.msg.num_opts = 0;
+ tx.msg.len = 0;
+
+ err = 1;
+
+ switch (rx.msg.code) {
+ 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;
+
+ 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);
+
+ tx.msg.opts[1].type = NMRP_O_FW_UP;
+ tx.msg.opts[1].len = NMRP_OPT_LEN;
+
+ expect = NMRP_C_TFTP_UL_REQ;
+
+ 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);
+
+ 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;
+ 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) {
+ goto out;
+ }
+ break;
+ case NMRP_C_KEEP_ALIVE_REQ:
+ tx.msg.code = NMRP_C_KEEP_ALIVE_ACK;
+ break;
+ case NMRP_C_CLOSE_REQ:
+ tx.msg.code = NMRP_C_CLOSE_ACK;
+ break;
+ case NMRP_C_CLOSE_ACK:
+ err = 0;
+ goto out;
+ default:
+ fprintf(stderr, "Unhandled message code 0x%02x!\n",
+ rx.msg.code);
+ }
+
+ if (tx.msg.code != NMRP_C_NONE) {
+ msg_update_len(&tx.msg);
+ msg_hton(&tx.msg);
+
+ if (pkt_send(fd, &addr, &tx) < 0) {
+ perror("sendto");
+ goto out;
+ }
+ }
+
+ if (rx.msg.code == NMRP_C_CLOSE_REQ) {
+ printf("Remote requested to close connection.\n");
+ break;
+ }
+
+ err = pkt_recv(fd, &rx);
+ if (err) {
+ if (err == 2) {
+ fprintf(stderr, "Timeout while waiting for 0x%02x.\n", expect);
+ }
+ goto out;
+ }
+
+ sock_set_rx_timeout(fd, arg_rx_timeout);
+
+ } while (1);
+
+ err = 0;
+
+out:
+ close(fd);
+
+ return err;
+}
+++ /dev/null
-#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>
-#include <string.h>
-#include <unistd.h>
-#include <errno.h>
-#include <stdio.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 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)
-
-extern int tftp_put(const char *filename, const char *ipaddr, uint16_t port);
-extern int sock_set_rx_timeout(int fd, unsigned msec);
-
-enum nmrp_code {
- NMRP_C_NONE = 0,
- NMRP_C_ADVERTISE = 1,
- NMRP_C_CONF_REQ = 2,
- NMRP_C_CONF_ACK = 3,
- NMRP_C_CLOSE_REQ = 4,
- NMRP_C_CLOSE_ACK = 5,
- NMRP_C_KEEP_ALIVE_REQ = 6,
- NMRP_C_KEEP_ALIVE_ACK = 7,
- NMRP_C_TFTP_UL_REQ = 16
-};
-
-enum nmrp_opt_type {
- NMRP_O_MAGIC_NO = 0x0001,
- NMRP_O_DEV_IP = 0x0002,
- NMRP_O_DEV_REGION = 0x0004,
- NMRP_O_FW_UP = 0x0101,
- NMRP_O_ST_UP = 0x0102,
- NMRP_O_FILE_NAME = 0x0181
-};
-
-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;
-} PACKED;
-
-struct nmrp_msg {
- uint16_t reserved;
- uint8_t code;
- uint8_t id;
- uint16_t len;
- struct nmrp_opt opts[6];
- uint32_t num_opts;
-} PACKED;
-
-struct nmrp_pkt {
- struct ether_header eh;
- struct nmrp_msg msg;
-} PACKED;
-
-static void msg_update_len(struct nmrp_msg *msg)
-{
- uint32_t i = 0;
- msg->len = NMRP_HDR_LEN;
- for (; i != msg->num_opts; ++i) {
- msg->len += msg->opts[i].len;
- }
-}
-
-static void msg_hton(struct nmrp_msg *msg)
-{
- 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);
- }
-}
-
-static void msg_hdr_ntoh(struct nmrp_msg *msg)
-{
- msg->reserved = ntohs(msg->reserved);
- msg->len = ntohs(msg->len);
-}
-
-static int msg_ntoh(struct nmrp_msg *msg)
-{
- 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;
- }
-
- opt->type = ntohs(opt->type);
- opt->len = ntohs(opt->len);
-
- remaining -= opt->len;
- }
-
- return 0;
-}
-
-static void msg_dump(struct nmrp_msg *msg)
-{
- struct nmrp_opt *opt;
- int remain_len, len, i;
-
- printf("res=0x%04x, code=0x%02x, id=0x%02x, len=%u", msg->reserved,
- msg->code, msg->id, msg->len);
-
- remain_len = msg->len - NMRP_HDR_LEN;
- printf("%s\n", remain_len ? "" : " (no opts)");
-
- opt = msg->opts;
-
- 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 ");
- }
-
- printf("%02x ", ((char*)&opt->val)[i] & 0xff);
- }
- printf("\n");
- remain_len -= len;
- opt = (struct nmrp_opt*)(((char*)opt) + len);
- }
-}
-
-static int intf_get_index_and_addr(int fd, const char *name, int *index,
- uint8_t *hwaddr)
-{
- struct ifreq ifr;
-
- memset(&ifr, 0, sizeof(ifr));
- strncpy(ifr.ifr_name, name, IFNAMSIZ - 1);
-
- if (ioctl(fd, SIOCGIFINDEX, &ifr) < 0) {
- perror("ioctl(SIOCGIFINDEX)");
- return -1;
- }
- *index = ifr.ifr_ifindex;
-
- if (ioctl(fd, SIOCGIFHWADDR, &ifr) < 0) {
- perror("ioctl(SIOCGIFHWADDR)");
- return -1;
- }
- memcpy(hwaddr, ifr.ifr_hwaddr.sa_data, ETH_ALEN);
-
- return 0;
-}
-
-static int pkt_send(int fd, struct sockaddr_ll *addr, 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));
-}
-
-static int pkt_recv(int fd, struct nmrp_pkt *pkt)
-{
- struct sockaddr_ll from;
- socklen_t addrlen;
- ssize_t bytes, len;
-
- memset(pkt, 0, sizeof(*pkt));
- bytes = recvfrom(fd, pkt, NMRP_MIN_PKT_LEN, MSG_PEEK,
- (struct sockaddr*)&from, &addrlen);
-
- 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;
- }
-
- msg_hdr_ntoh(&pkt->msg);
- len = pkt->msg.len + sizeof(pkt->eh);
-
- 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);
- return 1;
- } else {
- if (msg_ntoh(&pkt->msg) != 0) {
- return 1;
- }
- msg_dump(&pkt->msg);
-
- return 0;
- }
-
- return 1;
-}
-
-static int sock_bind_to_intf(int fd, const char *name)
-{
- 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;
-}
-
-//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 const char *spinner = "\\|/-";
-
-int main(int argc, char **argv)
-{
- struct nmrp_pkt tx, rx;
- struct sockaddr_ll addr;
- uint8_t hwaddr[ETH_ALEN];
- int i, fd, err, ulreqs, expect;
-
- err = 1;
-
- fd = socket(AF_PACKET, SOCK_RAW, htons(ETH_P_NMRP));
- if (fd == -1) {
- perror("socket");
- return 1;
- }
-
- if (intf_get_index_and_addr(fd, arg_intf, &addr.sll_ifindex, hwaddr)) {
- return 1;
- }
-
- if (sock_bind_to_intf(fd, arg_intf)) {
- return 1;
- }
-
- if (sock_set_rx_timeout(fd, arg_rx_timeout)) {
- 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);
-
- memcpy(tx.eh.ether_shost, hwaddr, ETH_ALEN);
- memcpy(tx.eh.ether_dhost, target, ETH_ALEN);
- tx.eh.ether_type = htons(ETH_P_NMRP);
-
- 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';
-
- msg_update_len(&tx.msg);
- msg_hton(&tx.msg);
-
- i = 0;
-
- while (1) {
- printf("\rAdvertising NMRP server on %s ... %c", arg_intf, spinner[i]);
- fflush(stdout);
- i = (i + 1) & 3;
-
- if (pkt_send(fd, &addr, &tx) < 0) {
- perror("sendto");
- goto out;
- }
-
- err = pkt_recv(fd, &rx);
- if (err == 0) {
- break;
- } else if (err == 1) {
- printf("ERR\n");
- goto out;
- }
- }
-
- printf("\n");
-
- expect = NMRP_C_CONF_REQ;
- ulreqs = 0;
-
- do {
- 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);
- }
-
- tx.msg.code = NMRP_C_NONE;
- tx.msg.reserved = 0;
- tx.msg.id = 0;
- tx.msg.num_opts = 0;
- tx.msg.len = 0;
-
- err = 1;
-
- switch (rx.msg.code) {
- 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;
-
- 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);
-
- tx.msg.opts[1].type = NMRP_O_FW_UP;
- tx.msg.opts[1].len = NMRP_OPT_LEN;
-
- expect = NMRP_C_TFTP_UL_REQ;
-
- 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);
-
- 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;
- 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) {
- goto out;
- }
- break;
- case NMRP_C_KEEP_ALIVE_REQ:
- tx.msg.code = NMRP_C_KEEP_ALIVE_ACK;
- break;
- case NMRP_C_CLOSE_REQ:
- tx.msg.code = NMRP_C_CLOSE_ACK;
- break;
- case NMRP_C_CLOSE_ACK:
- err = 0;
- goto out;
- default:
- fprintf(stderr, "Unhandled message code 0x%02x!\n",
- rx.msg.code);
- }
-
- if (tx.msg.code != NMRP_C_NONE) {
- msg_update_len(&tx.msg);
- msg_hton(&tx.msg);
-
- if (pkt_send(fd, &addr, &tx) < 0) {
- perror("sendto");
- goto out;
- }
- }
-
- if (rx.msg.code == NMRP_C_CLOSE_REQ) {
- printf("Remote requested to close connection.\n");
- break;
- }
-
- err = pkt_recv(fd, &rx);
- if (err) {
- if (err == 2) {
- fprintf(stderr, "Timeout while waiting for 0x%02x.\n", expect);
- }
- goto out;
- }
-
- sock_set_rx_timeout(fd, arg_rx_timeout);
-
- } while (1);
-
- err = 0;
-
-out:
- close(fd);
-
- return err;
-}
projects / oweals / nmrpflash.git / commitdiff