void process_rfc822_addr(char *rfc822, char *user, char *node, char *name);
char *rfc822_fetch_field(char *rfc822, char *fieldname);
+void CtdlDirectoryInit(void);
+void CtdlDirectoryAddUser(char *internet_addr, char *citadel_addr);
+void CtdlDirectoryDelUser(char *internet_addr);
+int CtdlDirectoryLookup(char *target, char *internet_addr);
int convert_internet_address(char *destuser, char *desthost, char *source);
enum {