Author: Pekka Riikonen <priikone@poseidon.pspt.fi>
- Copyright (C) 1997 - 2000 Pekka Riikonen
+ Copyright (C) 1997 - 2001 Pekka Riikonen
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
/* All defined packet flags */
#define SILC_PACKET_FLAG_NONE 0x00
#define SILC_PACKET_FLAG_PRIVMSG_KEY 0x01
-#define SILC_PACKET_FLAG_FORWARDED 0x02
+#define SILC_PACKET_FLAG_LIST 0x02
#define SILC_PACKET_FLAG_BROADCAST 0x04
#define SILC_PACKET_FLAG_TUNNELED 0x08
/* Rest of flags still available
Packet flags. Flags are defined above.
unsigned char *src_id
- unsigned int src_id_len
- SilcIdType src_id_type
+ uint16 src_id_len
+ unsigned char src_id_type
Source ID, its length and type. On packet reception retuned ID's
are always the hash values of the ID's from the packet.
+ unsigned char *dst_id;
+ uint16 dst_id_len;
+ unsigned char src_id_type;
+
+ Destination ID, its length and type. On packet reception retuned
+ ID's are always the hash values of the ID's from the packet.
+
SilcHash hash
Pointer to allocated hash object. This must be MD5 hash object.
SilcPacketFlags flags;
unsigned char *src_id;
- unsigned int src_id_len;
- SilcIdType src_id_type;
+ uint16 src_id_len;
+ unsigned char src_id_type;
unsigned char *dst_id;
- unsigned int dst_id_len;
- SilcIdType dst_id_type;
+ uint16 dst_id_len;
+ unsigned char dst_id_type;
- unsigned int truelen;
- unsigned int padlen;
+ uint16 truelen;
+ uint16 padlen;
+
+ /* Back pointers */
+ void *context;
+ SilcSocketConnection sock;
- /* For padding generation */
- SilcRng rng;
+ /* Reference count for this context. The context is free'd only
+ after the reference count is zero. */
+ int users;
} SilcPacketContext;
/*
typedef void (*SilcPacketParserCallback)(SilcPacketParserContext
*parse_context);
+/* The packet check callback in decryption phase */
+typedef int (*SilcPacketCheckDecrypt)(SilcPacketType packet_type,
+ SilcBuffer buffer,
+ SilcPacketContext *packet,
+ void *context);
/* SILC Packet types. */
#define SILC_PACKET_NONE 0 /* NULL, never sent */
#define SILC_PACKET_CONNECTION_AUTH_REQUEST 16 /* Request of auth meth */
#define SILC_PACKET_CONNECTION_AUTH 17 /* Connectinon auth */
#define SILC_PACKET_NEW_ID 18 /* Sending new ID */
-#define SILC_PACKET_NEW_ID_LIST 19 /* Sending list of them */
-#define SILC_PACKET_NEW_CLIENT 20 /* Registering client */
-#define SILC_PACKET_NEW_SERVER 21 /* Registering server */
-#define SILC_PACKET_NEW_CHANNEL 22 /* Registering channel */
-#define SILC_PACKET_NEW_CHANNEL_USER 23 /* "" user on channel */
-#define SILC_PACKET_NEW_CHANNEL_LIST 24 /* List of new channels */
-#define SILC_PACKET_NEW_CHANNEL_USER_LIST 25 /* List of users on "" */
-#define SILC_PACKET_REPLACE_ID 26 /* To replace old ID */
-#define SILC_PACKET_REMOVE_ID 27 /* To remove ID */
-#define SILC_PACKET_REMOVE_CHANNEL_USER 28 /* Remove user from channel */
-#define SILC_PACKET_REKEY 29
-#define SILC_PACKET_REKEY_DONE 30
-/* #define SILC_PACKET_MAX 255 */
+#define SILC_PACKET_NEW_CLIENT 19 /* Client registering */
+#define SILC_PACKET_NEW_SERVER 20 /* Server registering */
+#define SILC_PACKET_NEW_CHANNEL 21 /* Channel registering */
+#define SILC_PACKET_REKEY 22 /* Re-key start */
+#define SILC_PACKET_REKEY_DONE 23 /* Re-key done */
+#define SILC_PACKET_HEARTBEAT 24 /* Heartbeat */
+#define SILC_PACKET_KEY_AGREEMENT 25 /* Key Agreement request */
+#define SILC_PACKET_CELL_ROUTERS 26 /* Cell routers backup */
+
+#define SILC_PACKET_PRIVATE 200 /* Private range start */
+#define SILC_PACKET_MAX 255 /* RESERVED */
/* Macros */
int silc_packet_write(int sock, SilcBuffer src);
int silc_packet_send(SilcSocketConnection sock, int force_send);
void silc_packet_encrypt(SilcCipher cipher, SilcHmac hmac,
- SilcBuffer buffer, unsigned int len);
+ SilcBuffer buffer, uint32 len);
void silc_packet_assemble(SilcPacketContext *ctx);
void silc_packet_send_prepare(SilcSocketConnection sock,
- unsigned int header_len,
- unsigned int padlen,
- unsigned int data_len);
+ uint32 header_len,
+ uint32 padlen,
+ uint32 data_len);
int silc_packet_read(int sock, SilcBuffer dest);
int silc_packet_receive(SilcSocketConnection sock);
int silc_packet_decrypt(SilcCipher cipher, SilcHmac hmac,
- SilcBuffer buffer, SilcPacketContext *packet);
-int silc_packet_receive_process(SilcSocketConnection sock,
- SilcCipher cipher, SilcHmac hmac,
- SilcPacketParserCallback parser,
- void *context);
+ SilcBuffer buffer, SilcPacketContext *packet,
+ SilcPacketCheckDecrypt check_packet,
+ void *context);
+void silc_packet_receive_process(SilcSocketConnection sock,
+ SilcCipher cipher, SilcHmac hmac,
+ SilcPacketParserCallback parser,
+ void *context);
SilcPacketType silc_packet_parse(SilcPacketContext *ctx);
SilcPacketType silc_packet_parse_special(SilcPacketContext *ctx);
+SilcPacketContext *silc_packet_context_alloc();
+SilcPacketContext *silc_packet_context_dup(SilcPacketContext *ctx);
+void silc_packet_context_free(SilcPacketContext *ctx);
#endif
projects / silc.git / blobdiff