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#include <stdlib.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <dlfcn.h>
#include <stdlib.h>
static void *socket_p = NULL;
static struct sockaddr_in bind_addr;
static int do_bind;
int socket(int domain, int type, int protocol) {
auto int res;
if (socket_p == NULL) {
char *str;
socket_p = dlsym(RTLD_NEXT, "socket");
if (!socket_p)
return -1;
#ifdef DEBUG
printf("Loaded socket %x\n", socket_p);
#endif
if ((domain == PF_INET) && (str = getenv("BINDTO")) != NULL) {
#ifdef DEBUG
printf("Thinking about bind\n");
#endif
if (inet_aton(str, &bind_addr.sin_addr)) {
do_bind = 1;
bind_addr.sin_len = INET_ADDRSTRLEN;
bind_addr.sin_family = AF_INET;
#ifdef DEBUG
printf("WILL DO BIND %s, %x\n", str, bind_addr.sin_addr.s_addr);
#endif
}
}
}
res = ((int(*)(int a, int b, int c))socket_p)(domain, type, protocol);
if (do_bind) {
bind(res, (struct sockaddr*)&bind_addr, INET_ADDRSTRLEN);
}
return res;
};
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