/*
-
+
silccommand.h
-
- Author: Pekka Riikonen <priikone@poseidon.pspt.fi>
-
- Copyright (C) 1997 - 2000 Pekka Riikonen
-
+
+ Author: Pekka Riikonen <priikone@silcnet.org>
+
+ 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
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
-
+
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
*/
+/****h* silccore/SilcCommandAPI
+ *
+ * DESCRIPTION
+ *
+ * Implementation of the Command Payload. The Command Payload is used to
+ * send commands and also command replies usually between client and
+ * server.
+ *
+ ***/
+
#ifndef SILCCOMMAND_H
#define SILCCOMMAND_H
-/* Command function callback. The actual command function pointer. */
-typedef void (*SilcCommandCb)(void *context);
-
-/* Typedefinition for SILC commands. */
-typedef unsigned char SilcCommand;
+/****f* silccore/SilcCommandAPI/SilcCommandCb
+ *
+ * SYNOPSIS
+ *
+ * typedef void (*SilcCommandCb)(void *context, void *context2);
+ *
+ * DESCRIPTION
+ *
+ * Command function callback. The actual command function pointer.
+ * This is generic command callback that the application may choose to
+ * use with its command routines. However, none of the generic
+ * routines depend on this callback so application may freely define
+ * their own command callback if desired.
+ *
+ ***/
+typedef void (*SilcCommandCb)(void *context, void *context2);
-/* Forward declaration for Command Payload parsed from packet. The
- actual structure is defined in source file and is private data. */
+/****s* silccore/SilcCommandAPI/SilcCommandPayload
+ *
+ * NAME
+ *
+ * typedef struct SilcCommandPayloadStruct *SilcCommandPayload;
+ *
+ * DESCRIPTION
+ *
+ * This context is the actual Command Payload and is allocated
+ * by silc_command_payload_parse and given as argument usually to
+ * all silc_command_payload_* functions. It is freed by the
+ * silc_command_payload_free function.
+ *
+ ***/
typedef struct SilcCommandPayloadStruct *SilcCommandPayload;
-/* Command flags. These set how the commands behave on different
- situations. These can be OR'ed together to set multiple flags. */
+/****d* silccore/SilcCommandAPI/SilcCommandFlags
+ *
+ * NAME
+ *
+ * typedef enum { ... } SilcCommandFlags;
+ *
+ * DESCRIPTION
+ *
+ * Command flags that set how the commands behave on different
+ * situations. These can be OR'es together to set multiple flags.
+ * The application is resoponsible of implementing the behaviour
+ * of these flags. These are here just to define generic flags.
+ * The server usually makes use of these flags.
+ *
+ * SOURCE
+ */
typedef enum {
SILC_CF_NONE = 0,
SILC_CF_SILC_OPER = (1L << 5),
} SilcCommandFlag;
+/***/
+
+/****d* silccore/SilcCommandAPI/SilcCommand
+ *
+ * NAME
+ *
+ * typedef unsigned char SilcCommand;
+ *
+ * DESCRIPTION
+ *
+ * The SilcCommand type definition and the commands. The commands
+ * listed here are the official SILC Commands and they have client
+ * and server counterparts.
+ *
+ * SOURCE
+ */
+typedef unsigned char SilcCommand;
/* All SILC commands. These are commands that have client and server
- counterparts. These are pretty much the same as in IRC. */
+ counterparts. */
#define SILC_COMMAND_NONE 0
#define SILC_COMMAND_WHOIS 1
#define SILC_COMMAND_WHOWAS 2
/* Reserved */
#define SILC_COMMAND_RESERVED 255
+/***/
-/* Command Status type */
-typedef uint16 SilcCommandStatus;
+/****d* silccore/SilcCommandAPI/SilcCommandStatus
+ *
+ * NAME
+ *
+ * typedef SilcUInt16 SilcCommandStatus;
+ *
+ * DESCRIPTION
+ *
+ * The SilcCommandStatus type definition and the status defines.
+ * The server returns a status in each Command Payload indicating
+ * the status of the command.
+ *
+ * SOURCE
+ */
+typedef SilcUInt16 SilcCommandStatus;
/* Command Status messages */
#define SILC_STATUS_OK 0
#define SILC_STATUS_ERR_AUTH_FAILED 45
#define SILC_STATUS_ERR_UNKNOWN_ALGORITHM 46
#define SILC_STATUS_ERR_NO_SUCH_SERVER_ID 47
+/***/
/* Prototypes */
-SilcCommandPayload silc_command_payload_parse(SilcBuffer buffer);
+
+/****f* silccore/SilcCommandAPI/silc_command_payload_parse
+ *
+ * SYNOPSIS
+ *
+ * SilcCommandPayload
+ * silc_command_payload_parse(const unsigned char *payload,
+ * SilcUInt32 payload_len);
+ *
+ * DESCRIPTION
+ *
+ * Parses command payload returning new command payload structure. The
+ * `buffer' is the raw payload.
+ *
+ ***/
+SilcCommandPayload silc_command_payload_parse(const unsigned char *payload,
+ SilcUInt32 payload_len);
+
+/****f* silccore/SilcCommandAPI/silc_command_payload_encode
+ *
+ * SYNOPSIS
+ *
+ * SilcBuffer silc_command_payload_encode(SilcCommand cmd,
+ * SilcUInt32 argc,
+ * unsigned char **argv,
+ * SilcUInt32 *argv_lens,
+ * SilcUInt32 *argv_types,
+ * SilcUInt16 ident);
+ *
+ * DESCRIPTION
+ *
+ * Encodes Command Payload returning it to SilcBuffer.
+ *
+ ***/
SilcBuffer silc_command_payload_encode(SilcCommand cmd,
- uint32 argc,
+ SilcUInt32 argc,
unsigned char **argv,
- uint32 *argv_lens,
- uint32 *argv_types,
- uint16 ident);
+ SilcUInt32 *argv_lens,
+ SilcUInt32 *argv_types,
+ SilcUInt16 ident);
+
+/****f* silccore/SilcCommandAPI/silc_command_payload_encode_payload
+ *
+ * SYNOPSIS
+ *
+ * SilcBuffer
+ * silc_command_payload_encode_payload(SilcCommandPayload payload);
+ *
+ * DESCRIPTION
+ *
+ * Same as silc_command_payload_encode but encodes the buffer from
+ * SilcCommandPayload structure instead of raw data.
+ *
+ ***/
SilcBuffer silc_command_payload_encode_payload(SilcCommandPayload payload);
+
+/****f* silccore/SilcCommandAPI/silc_command_payload_encode_va
+ *
+ * SYNOPSIS
+ *
+ * SilcBuffer silc_command_payload_encode_va(SilcCommand cmd,
+ * SilcUInt16 ident,
+ * SilcUInt32 argc, ...);
+ *
+ * DESCRIPTION
+ *
+ * Encodes Command payload with variable argument list. The arguments
+ * must be: SilcUInt32, unsigned char *, unsigned int, ... One
+ * {SilcUInt32, unsigned char * and unsigned int} forms one argument,
+ * thus `argc' in case when sending one {SilcUInt32, unsigned char *
+ * and SilcUInt32} equals one (1) and when sending two of those it
+ * equals two (2), and so on. This has to be preserved or bad things
+ * will happen. The variable arguments is: {type, data, data_len}.
+ *
+ ***/
SilcBuffer silc_command_payload_encode_va(SilcCommand cmd,
- uint16 ident,
- uint32 argc, ...);
+ SilcUInt16 ident,
+ SilcUInt32 argc, ...);
+
+/****f* silccore/SilcCommandAPI/silc_command_payload_encode_vap
+ *
+ * SYNOPSIS
+ *
+ * SilcBuffer silc_command_payload_encode_vap(SilcCommand cmd,
+ * SilcUInt16 ident,
+ * SilcUInt32 argc, va_list ap);
+ *
+ * DESCRIPTION
+ *
+ * This is equivalent to the silc_command_payload_encode_va except
+ * takes the va_list as argument.
+ *
+ ***/
SilcBuffer silc_command_payload_encode_vap(SilcCommand cmd,
- uint16 ident,
- uint32 argc, va_list ap);
+ SilcUInt16 ident,
+ SilcUInt32 argc, va_list ap);
+
+/****f* silccore/SilcCommandAPI/silc_command_reply_payload_encode_va
+ *
+ * SYNOPSIS
+ *
+ * SilcBuffer
+ * silc_command_reply_payload_encode_va(SilcCommand cmd,
+ * SilcCommandStatus status,
+ * SilcUInt16 ident,
+ * SilcUInt32 argc, ...);
+ *
+ * DESCRIPTION
+ *
+ * Same as silc_command_payload_encode_va except that this is used to
+ * encode strictly command reply packets. The command status message
+ * to be returned is sent as extra argument to this function. The `argc'
+ * must not count `status' as on argument.
+ *
+ ***/
SilcBuffer
silc_command_reply_payload_encode_va(SilcCommand cmd,
SilcCommandStatus status,
- uint16 ident,
- uint32 argc, ...);
-void silc_command_free_payload(SilcCommandPayload payload);
+ SilcUInt16 ident,
+ SilcUInt32 argc, ...);
+
+/****f* silccore/SilcCommandAPI/silc_command_reply_payload_encode_vap
+ *
+ * SYNOPSIS
+ *
+ * SilcBuffer
+ * silc_command_reply_payload_encode_vap(SilcCommand cmd,
+ * SilcCommandStatus status,
+ * SilcUInt16 ident, SilcUInt32 argc,
+ * va_list ap);
+ *
+ * DESCRIPTION
+ *
+ * This is equivalent to the silc_command_reply_payload_encode_va except
+ * takes the va_list as argument.
+ *
+ ***/
+SilcBuffer
+silc_command_reply_payload_encode_vap(SilcCommand cmd,
+ SilcCommandStatus status,
+ SilcUInt16 ident, SilcUInt32 argc,
+ va_list ap);
+
+/****f* silccore/SilcCommandAPI/silc_command_free
+ *
+ * SYNOPSIS
+ *
+ * void silc_command_payload_free(SilcCommandPayload payload);
+ *
+ * DESCRIPTION
+ *
+ * Frees the Command Payload and all data in it.
+ *
+ ***/
+void silc_command_payload_free(SilcCommandPayload payload);
+
+/****f* silccore/SilcCommandAPI/silc_command_get
+ *
+ * SYNOPSIS
+ *
+ * SilcCommand silc_command_get(SilcCommandPayload payload);
+ *
+ * DESCRIPTION
+ *
+ * Return the command from the payload.
+ *
+ ***/
SilcCommand silc_command_get(SilcCommandPayload payload);
+
+/****f* silccore/SilcCommandAPI/silc_command_get_args
+ *
+ * SYNOPSIS
+ *
+ * SilcArgumentPayload silc_command_get_args(SilcCommandPayload payload);
+ *
+ * DESCRIPTION
+ *
+ * Return the Arguments Payload containing the arguments from the
+ * Command Payload. The caller must not free it.
+ *
+ ***/
SilcArgumentPayload silc_command_get_args(SilcCommandPayload payload);
-uint16 silc_command_get_ident(SilcCommandPayload payload);
-void silc_command_set_ident(SilcCommandPayload payload, uint16 ident);
+
+/****f* silccore/SilcCommandAPI/silc_command_get_ident
+ *
+ * SYNOPSIS
+ *
+ * SilcUInt16 silc_command_get_ident(SilcCommandPayload payload);
+ *
+ * DESCRIPTION
+ *
+ * Return the command identifier from the payload. The identifier can
+ * be used to identify which command reply belongs to which command.
+ * The client sets the identifier to the payload and server must return
+ * the same identifier in the command reply.
+ *
+ ***/
+SilcUInt16 silc_command_get_ident(SilcCommandPayload payload);
+
+/****f* silccore/SilcCommandAPI/silc_command_set_ident
+ *
+ * SYNOPSIS
+ *
+ * void silc_command_set_ident(SilcCommandPayload payload, SilcUInt16 ident);
+ *
+ * DESCRIPTION
+ *
+ * Function to set identifier to already allocated Command Payload. Command
+ * payloads are frequentlly resent in SILC and thusly this makes it easy
+ * to set the identifier without encoding new Command Payload.
+ *
+ ***/
+void silc_command_set_ident(SilcCommandPayload payload, SilcUInt16 ident);
+
+/****f* silccore/SilcCommandAPI/silc_command_set_command
+ *
+ * SYNOPSIS
+ *
+ * void silc_command_set_command(SilcCommandPayload payload,
+ * SilcCommand command);
+ *
+ * DESCRIPTION
+ *
+ * Function to set the command to already allocated Command Payload. This
+ * makes it easy to change the command in the payload without encoding new
+ * Command Payload.
+ *
+ ***/
void silc_command_set_command(SilcCommandPayload payload, SilcCommand command);
#endif
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