database: Add support for two signatures

[location/libloc.git] / src / loc / format.h

diff --git a/src/loc/format.h b/src/loc/format.h
index 2910798c7fcf0cc7b0dc1cd4e9522342cdd26463..ce0d2ff3899badab23ca0b7cb075cda431cd12e2 100644 (file)
--- a/src/loc/format.h
+++ b/src/loc/format.h
@@ -32,9 +32,8 @@ enum loc_database_version {
 
 #define LOC_DATABASE_DOMAIN "_v%u._db.location.ipfire.org"
 
-#define LOC_DATABASE_PAGE_SIZE  4096
-
-#define LOC_SIGNATURE_MAX_LENGTH       4096
+#define LOC_DATABASE_PAGE_SIZE         4096
+#define LOC_SIGNATURE_MAX_LENGTH       (LOC_DATABASE_PAGE_SIZE / 2)
 
 struct loc_database_magic {
        char magic[7];
@@ -76,12 +75,17 @@ struct loc_database_header_v1 {
        uint32_t pool_offset;
        uint32_t pool_length;
 
-       // Signature
-       uint32_t signature_length;
-       char signature[LOC_SIGNATURE_MAX_LENGTH];
+       // Some padding
+       char padding1[2];
+
+       // Signatures
+       uint32_t signature1_length;
+       uint32_t signature2_length;
+       char signature1[LOC_SIGNATURE_MAX_LENGTH];
+       char signature2[LOC_SIGNATURE_MAX_LENGTH];
 
        // Add some padding for future extensions
-       char padding[32];
+       char padding2[32];
 };
 
 struct loc_database_network_node_v1 {