1 files changed, 53 insertions, 0 deletions
diff --git a/signature.c b/signature.c
new file mode 100644
index 0000000..df04623
--- /dev/null
+++ b/signature.c
@@ -0,0 +1,53 @@
+
+#include <stdlib.h>
+#include "antispam-plugin.h"
+#include "signature.h"
+#include "mail-storage-private.h"
+
+static char *signature_hdr = "X-DSPAM-Signature";
+
+void signature_init(void)
+{
+	char *tmp = getenv("ANTISPAM_SIGNATURE");
+	if (tmp)
+		signature_hdr = tmp;
+	debug("antispam: signature header line is \"%s\"\n", signature_hdr);
+}
+
+int signature_extract(struct mailbox_transaction_context *t,
+		      struct mail *mail, struct siglist **list)
+{
+	const char *signature;
+	struct siglist *item;
+
+	signature = mail_get_first_header(mail, signature_hdr);
+	if (!signature || !signature[0]) {
+		mail_storage_set_error(t->box->storage,
+				       "antispam signature not found");
+		return -1;
+	}
+
+	item = i_new(struct siglist, 1);
+	item->next = *list;
+	*list = item;
+	item->sig = i_strdup(signature);
+	return 0;
+}
+
+void signature_list_free(struct siglist **list)
+{
+	struct siglist *item, *next;
+
+	i_assert(list);
+
+	item = *list;
+
+	while (item) {
+		next = item->next;
+		i_free(item->sig);
+		i_free(item);
+		item = next;
+		if (item)
+			next = item->next;
+	}
+}