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#ifdef HAVE_CONFIG_H
#include "config.h"
#endif /* HAVE_CONFIG_H */
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <inttypes.h>
#include <sys/types.h>
#include <sys/param.h>
#include <sys/cdefs.h>
#include <atalk/fce_api.h>
#include <atalk/util.h>
#define MAXBUFLEN 1024
static char *fce_ev_names[] = {
"",
"FCE_FILE_MODIFY",
"FCE_FILE_DELETE",
"FCE_DIR_DELETE",
"FCE_FILE_CREATE",
"FCE_DIR_CREATE",
"FCE_TM_SIZE"
};
// get sockaddr, IPv4 or IPv6:
static void *get_in_addr(struct sockaddr *sa)
{
if (sa->sa_family == AF_INET) {
return &(((struct sockaddr_in*)sa)->sin_addr);
}
return &(((struct sockaddr_in6*)sa)->sin6_addr);
}
static int unpack_fce_packet(unsigned char *buf, struct fce_packet *packet)
{
unsigned char *p = buf;
memcpy(&packet->magic[0], p, sizeof(packet->magic));
p += sizeof(packet->magic);
packet->version = *p;
p++;
packet->mode = *p;
p++;
memcpy(&packet->event_id, p, sizeof(packet->event_id));
p += sizeof(packet->event_id);
packet->event_id = ntohl(packet->event_id);
memcpy(&packet->datalen, p, sizeof(packet->datalen));
p += sizeof(packet->datalen);
packet->datalen = ntohs(packet->datalen);
memcpy(&packet->data[0], p, packet->datalen);
p += packet->datalen;
return 0;
}
int main(void)
{
int sockfd;
struct addrinfo hints, *servinfo, *p;
int rv;
int numbytes;
struct sockaddr_storage their_addr;
char buf[MAXBUFLEN];
socklen_t addr_len;
char s[INET6_ADDRSTRLEN];
uint64_t tmsize;
memset(&hints, 0, sizeof hints);
hints.ai_family = AF_UNSPEC; // set to AF_INET to force IPv4
hints.ai_socktype = SOCK_DGRAM;
if ((rv = getaddrinfo(NULL, FCE_DEFAULT_PORT_STRING, &hints, &servinfo)) != 0) {
fprintf(stderr, "getaddrinfo: %s\n", gai_strerror(rv));
return 1;
}
// loop through all the results and bind to the first we can
for(p = servinfo; p != NULL; p = p->ai_next) {
if ((sockfd = socket(p->ai_family, p->ai_socktype,
p->ai_protocol)) == -1) {
perror("listener: socket");
continue;
}
if (bind(sockfd, p->ai_addr, p->ai_addrlen) == -1) {
close(sockfd);
perror("listener: bind");
continue;
}
break;
}
if (p == NULL) {
fprintf(stderr, "listener: failed to bind socket\n");
return 2;
}
freeaddrinfo(servinfo);
printf("listener: waiting to recvfrom...\n");
addr_len = sizeof their_addr;
struct fce_packet packet;
while (1) {
if ((numbytes = recvfrom(sockfd,
buf,
MAXBUFLEN - 1,
0,
(struct sockaddr *)&their_addr,
&addr_len)) == -1) {
perror("recvfrom");
exit(1);
}
unpack_fce_packet(buf, &packet);
if (memcmp(packet.magic, FCE_PACKET_MAGIC, sizeof(packet.magic)) == 0) {
switch (packet.mode) {
case FCE_TM_SIZE:
memcpy(&tmsize, packet.data, sizeof(uint64_t));
tmsize = ntoh64(tmsize);
printf("ID: %" PRIu32 ", Event: %s, Volume: %s, TM used size: %" PRIu64 " \n",
packet.event_id, fce_ev_names[packet.mode], packet.data + sizeof(uint64_t), tmsize);
break;
case FCE_CONN_START:
printf("FCE Start\n");
break;
case FCE_CONN_BROKEN:
printf("Broken FCE connection\n");
break;
default:
printf("ID: %" PRIu32 ", Event: %s, Path: %s\n",
packet.event_id, fce_ev_names[packet.mode], packet.data);
break;
}
}
}
close(sockfd);
return 0;
}
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