1 files changed, 108 insertions, 0 deletions
diff --git a/src/doveadm/dsync/dsync-mail.h b/src/doveadm/dsync/dsync-mail.h
new file mode 100644
index 0000000..fc00059
--- /dev/null
+++ b/src/doveadm/dsync/dsync-mail.h
@@ -0,0 +1,108 @@
+#ifndef DSYNC_MAIL_H
+#define DSYNC_MAIL_H
+
+#include "mail-types.h"
+
+struct md5_context;
+struct mail;
+struct mailbox;
+
+struct dsync_mail {
+	/* either GUID="" or uid=0 */
+	const char *guid;
+	uint32_t uid;
+	time_t saved_date;
+
+	/* If non-NULL, we're syncing within the dsync process using ibc-pipe.
+	   This mail can be used to mailbox_copy() the mail. */
+	struct mail *input_mail;
+	/* Verify that this equals to input_mail->uid */
+	uint32_t input_mail_uid;
+
+	/* TRUE if the following fields aren't set, because minimal_fill=TRUE
+	   parameter was used. */
+	bool minimal_fields;
+
+	const char *pop3_uidl;
+	uint32_t pop3_order;
+	time_t received_date;
+	/* Input stream containing the message text, or NULL if all instances
+	   of the message were already expunged from this mailbox. */
+	struct istream *input;
+};
+
+struct dsync_mail_request {
+	/* either GUID=NULL or uid=0 */
+	const char *guid;
+	uint32_t uid;
+};
+
+enum dsync_mail_change_type {
+	DSYNC_MAIL_CHANGE_TYPE_SAVE,
+	DSYNC_MAIL_CHANGE_TYPE_EXPUNGE,
+	DSYNC_MAIL_CHANGE_TYPE_FLAG_CHANGE
+};
+
+#define KEYWORD_CHANGE_ADD '+'
+#define KEYWORD_CHANGE_REMOVE '-'
+#define KEYWORD_CHANGE_FINAL '='
+#define KEYWORD_CHANGE_ADD_AND_FINAL '&'
+
+struct dsync_mail_change {
+	enum dsync_mail_change_type type;
+
+	uint32_t uid;
+	/* Message's GUID:
+	    - for expunges either 128bit hex or NULL if unknown
+	    - "" if backend doesn't support GUIDs */
+	const char *guid;
+	/* If GUID is "", this contains hash of the message header,
+	   otherwise NULL */
+	const char *hdr_hash;
+
+	/* Message's current modseq (saves, flag changes) */
+	uint64_t modseq;
+	/* Message's current private modseq (for private flags in
+	   shared mailboxes, otherwise 0) */
+	uint64_t pvt_modseq;
+
+	/* List of flag/keyword changes: (saves, flag changes) */
+
+	/* Flags added/removed since last sync, and final flags containing
+	   flags that exist now but haven't changed */
+	uint8_t add_flags, remove_flags, final_flags;
+	uint8_t add_pvt_flags, remove_pvt_flags;
+	/* Remove all keywords before applying changes. This is used only with
+	   old transaction logs, new ones never reset keywords (just explicitly
+	   remove unwanted keywords) */
+	bool keywords_reset;
+	/* +add, -remove, =final, &add_and_final. */
+	ARRAY_TYPE(const_string) keyword_changes;
+
+	/* Received timestamp for saves, if brain.sync_since/until_timestamp is set */
+	time_t received_timestamp;
+	/* Mail's size for saves if brain.sync_max_size is set,
+	   UOFF_T_MAX otherwise. */
+	uoff_t virtual_size;
+};
+
+struct mailbox_header_lookup_ctx *
+dsync_mail_get_hash_headers(struct mailbox *box, const char *const *hashed_headers);
+
+int dsync_mail_get_hdr_hash(struct mail *mail, unsigned int version,
+			    const char *const *hashed_headers, const char **hdr_hash_r);
+static inline bool dsync_mail_hdr_hash_is_empty(const char *hdr_hash)
+{
+	/* md5(\n) */
+	return strcmp(hdr_hash, "68b329da9893e34099c7d8ad5cb9c940") == 0;
+}
+
+int dsync_mail_fill(struct mail *mail, bool minimal_fill,
+		    struct dsync_mail *dmail_r, const char **error_field_r);
+int dsync_mail_fill_nonminimal(struct mail *mail, struct dsync_mail *dmail_r,
+			       const char **error_field_r);
+
+void dsync_mail_change_dup(pool_t pool, const struct dsync_mail_change *src,
+			   struct dsync_mail_change *dest_r);
+
+#endif