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#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "misc.hh"
#include "logger.hh"
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include "dns_random.hh"
void seedRandom(const string& source)
{
L<<Logger::Warning<<"Reading random entropy from '"<<source<<"'"<<endl;
int fd=open(source.c_str(), O_RDONLY);
if(fd < 0) {
L<<Logger::Error<<"Unable to open source of random '"<<source<<"': "<<stringerror()<<endl;
exit(EXIT_FAILURE);
}
char seed[16];
int ret;
int pos=0;
while(pos!=sizeof(seed)) {
ret = read(fd, seed+pos, sizeof(seed)-pos);
if(ret < 0) {
L<<Logger::Error<<"Unable to read random seed from "<<source<<": "<<stringerror()<<endl;
close(fd);
exit(EXIT_FAILURE);
}
if(!ret) {
L<<Logger::Error<<"Unable to read random seed from "<<source<<": end of file"<<endl;
close(fd);
exit(EXIT_FAILURE);
}
pos+=ret;
}
close(fd);
dns_random_init(seed);
}
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