blaze822: keep a pointer to the original header, if we have it anyway

blaze822.c

@@ -349,7 +349,7 @@ blaze822(char *file)
 
 	mesg->msg = buf;
 	mesg->end = end;
-	mesg->body = mesg->bodyend = mesg->bodychunk = 0;
+	mesg->body = mesg->bodyend = mesg->bodychunk = mesg->orig_header = 0;
 
 	return mesg;
 }
@@ -391,6 +391,7 @@ blaze822_mem(char *src, size_t len)
 	mesg->msg = buf;
 	mesg->end = end;
 	mesg->bodychunk = 0;   // src is not ours
+	mesg->orig_header = src;
 
 	return mesg;
 }
@@ -558,6 +559,7 @@ blaze822_mmap(char *file)
 	mesg->msg = mesg->bodychunk = buf;
 	mesg->end = end;
 	mesg->bodyend = buf + len;
+	mesg->orig_header = 0;
 
 	return mesg;
 
@@ -578,6 +580,12 @@ blaze822_body(struct message *mesg)
 	return mesg->body;
 }
 
+char *
+blaze822_orig_header(struct message *mesg)
+{
+	return mesg->orig_header;
+}
+
 size_t
 blaze822_bodylen(struct message *mesg)
 {

blaze822.h

@@ -24,6 +24,8 @@ char *blaze822_body(struct message *mesg);
 size_t blaze822_bodylen(struct message *mesg);
 size_t blaze822_headerlen(struct message *mesg);
 
+char *blaze822_orig_header(struct message *mesg);
+
 // rfc2047.c
 
 int blaze822_decode_rfc2047(char *, char *, size_t, char *);

blaze822_priv.h

@@ -4,6 +4,7 @@ struct message {
 	char *body;
 	char *bodyend;
 	char *bodychunk;
+	char *orig_header;
 };
 
 //          WSP            =  SP / HTAB