Add genkey.

1 files changed, 43 insertions, 1 deletions

diff --git a/src/simplertp-genkey.cc b/src/simplertp-genkey.cc
index bd28fee..be79c6b 100644
--- a/src/simplertp-genkey.cc
+++ b/src/simplertp-genkey.cc
@@ -24,5 +24,47 @@
  *  along with SimpleRTP; if not, write to the Free Software
  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
  */
-#include "simplertp-genkey.h"
+#include <stdio.h>
+
+int getrandom(char *buf, size_t size)
+{
+  FILE *fp = fopen("/dev/random", "r");
+  if(!fp) {
+    perror("Could not open /dev/random for reading");
+    return 1;
+  }
+  int ret = fread(buf, 1, size, fp);
+  fclose(fp);
+
+  if(ret != size) {
+    fprintf(stderr, "Could not read %d bytes from /dev/random, only got %d\n",
+           size, ret);
+    return 1;
+  }
+
+  return 0;
+}
+
+int main()
+{
+  fprintf(stderr, "Generating key and ssrc...\n");
+  fprintf(stderr, " - Move your mouse to generate entropy"
+          " or this will take a looooong time.\n");
+
+  char key[30];
+  if(getrandom(key, sizeof(key)) != 0) return 1;
+
+  char ssrc[4];
+  if(getrandom(ssrc, sizeof(ssrc)) != 0) return 1;
+  
+  printf("[crypto]\n");
+  printf("key=\"");
+  for(int i = 0; i < sizeof(key); i++) {
+    printf("%02x", (unsigned char)key[i]);
+  }
+  printf("\"\n");
+  printf("ssrc=%u\n", *((unsigned int*)ssrc));
+
+  return 0;
+}