X-Git-Url: http://git.ozlabs.org/?p=ccan;a=blobdiff_plain;f=ccan%2Frfc822%2Frfc822.h;h=19fccea8f35afbb3d36b0b68c420f7e30ef3572c;hp=2beae410cda27e80f4905aca63aa37cb776cd70d;hb=f71d6c64922b68fe3a785ec3a9faf093ef9299e1;hpb=de28abde1337e9255812ba720ffeef2c83a25dde

diff --git a/ccan/rfc822/rfc822.h b/ccan/rfc822/rfc822.h
index 2beae410..19fccea8 100644
--- a/ccan/rfc822/rfc822.h
+++ b/ccan/rfc822/rfc822.h
@@ -117,7 +117,7 @@ struct bytestring rfc822_body(struct rfc822_msg *msg);
 
 enum rfc822_header_errors {
 	RFC822_HDR_NO_COLON = 1,
-	RFC822_HDR_BAD_NAME = 2,
+	RFC822_HDR_BAD_NAME_CHARS = 2,
 };
 
 enum rfc822_header_errors rfc822_header_errors(struct rfc822_msg *msg,
@@ -168,4 +168,23 @@ struct bytestring rfc822_header_raw_value(struct rfc822_msg *msg,
 struct bytestring rfc822_header_unfolded_value(struct rfc822_msg *msg,
 					       struct rfc822_header *hdr);
 
+/**
+ * rfc822_header_is - determine if a header is of a given name
+ * @msg: message
+ * @hdr: a header handle
+ * @name: header name
+ *
+ * This returns true if the header field @hdr has name @name (case
+ * insensitive), otherwise false.
+ */
+bool rfc822_header_is(struct rfc822_msg *msg, struct rfc822_header *hdr,
+		      const char *name);
+
+struct rfc822_header *rfc822_next_header_of_name(struct rfc822_msg *msg,
+						 struct rfc822_header *hdr,
+						 const char *name);
+
+#define rfc822_first_header_of_name(_msg, _name) \
+	(rfc822_next_header_of_name((_msg), NULL, (_name)))
+
 #endif /* CCAN_RFC822_H_ */