checking in all the old panacean stuff

puttysrc/UNIX/UXGEN.C

@@ -0,0 +1,36 @@
+/*
+ * uxgen.c: Unix implementation of get_heavy_noise() from cmdgen.c.
+ */
+
+#include <stdio.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#include "putty.h"
+
+char *get_random_data(int len)
+{
+    char *buf = snewn(len, char);
+    int fd;
+    int ngot, ret;
+
+    fd = open("/dev/random", O_RDONLY);
+    if (fd < 0) {
+	sfree(buf);
+	perror("puttygen: unable to open /dev/random");
+	return NULL;
+    }
+
+    ngot = 0;
+    while (ngot < len) {
+	ret = read(fd, buf+ngot, len-ngot);
+	if (ret < 0) {
+	    close(fd);
+	    perror("puttygen: unable to read /dev/random");
+	    return NULL;
+	}
+	ngot += ret;
+    }
+
+    return buf;
+}