-char *rfc822_fetch_field(char *rfc822, char *fieldname);
-
-int IsDirectory(char *addr);
-void CtdlDirectoryInit(void);
-void CtdlDirectoryAddUser(char *internet_addr, char *citadel_addr);
-void CtdlDirectoryDelUser(char *internet_addr, char *citadel_addr);
-int CtdlDirectoryLookup(char *target, char *internet_addr);
+char *rfc822_fetch_field(const char *rfc822, const char *fieldname);
+void sanitize_truncated_recipient(char *str);
+char *qp_encode_email_addrs(char *source);
+int alias (char *name);
+int IsDirectory(char *addr, int allow_masq_domains);
+void CtdlRebuildDirectoryIndex(void);
+int CtdlDirectoryAddUser(char *internet_addr, char *citadel_addr);
+int CtdlDirectoryDelUser(char *internet_addr, char *citadel_addr);
+int CtdlDirectoryLookup(char *target, char *internet_addr, size_t targbuflen);
+void CtdlSetEmailAddressesForUser(char *requested_user, char *new_emailaddrs);