85 lines
2.1 KiB
C
85 lines
2.1 KiB
C
// L2TPNS Clustering Stuff
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// $Id: cluster.c,v 1.1 2003/12/16 07:07:39 fred_nerk Exp $ #include <stdio.h> #include <sys/file.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <sys/ioctl.h>
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#include <net/if.h>
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#include <string.h>
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#include <malloc.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <stdarg.h>
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#include <unistd.h>
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#include <stdio.h>
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#include "cluster.h"
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int cluster_sockfd = 0;
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int cluster_server = 0;
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uint32_t vip_address;
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extern int debug;
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void _log_hex(int level, const char *title, const char *data, int maxsize);
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#define log_hex(a,b,c,d)
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#ifndef log_hex
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#define log_hex(a,b,c,d) do{if (a > debug) _log_hex(a,b,c,d);}while (0)
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#endif
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// Create a listening socket
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int cluster_init(uint32_t bind_address, int server)
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{
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struct sockaddr_in addr;
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vip_address = bind_address;
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cluster_server = !!server;
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cluster_sockfd = socket(AF_INET, SOCK_DGRAM, UDP);
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memset(&addr, 0, sizeof(addr));
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addr.sin_family = AF_INET;
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addr.sin_port = htons(cluster_server ? CLUSTERPORT : CLUSTERCLIENTPORT);
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addr.sin_addr.s_addr = INADDR_ANY;
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setsockopt(cluster_sockfd, SOL_SOCKET, SO_REUSEADDR, &addr, sizeof(addr));
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if (bind(cluster_sockfd, (void *) &addr, sizeof(addr)) < 0)
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{
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perror("bind");
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exit(-1);
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}
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return cluster_sockfd;
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}
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int cluster_send_message(unsigned long ip_address, uint32_t vip, char type, void *data, int datalen)
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{
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size_t l = 1 + sizeof(uint32_t) + datalen;
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char *buf = NULL;
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struct sockaddr_in addr = {0};
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if (!cluster_sockfd) return -1;
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if (!ip_address) return 0;
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buf = calloc(l, 1);
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*(uint32_t *)(buf) = htonl(vip);
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*(char *)(buf+sizeof(uint32_t)) = type;
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if (data && datalen > 0)
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memcpy((char *)(buf + sizeof(uint32_t) + 1), data, datalen);
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addr.sin_addr.s_addr = ip_address;
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addr.sin_port = htons(cluster_server ? CLUSTERCLIENTPORT : CLUSTERPORT);
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addr.sin_family = AF_INET;
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log_hex(4, "Cluster send", buf, l);
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if (sendto(cluster_sockfd, buf, l, MSG_NOSIGNAL, (void *) &addr, sizeof(addr)) < 0)
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{
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perror("sendto");
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free(buf);
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return -1;
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}
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free(buf);
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return 0;
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}
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