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/* Copyright (c) 2002-2017 Pigeonhole authors, see the included COPYING file
*/
#ifndef __SIEVE_EXTENSIONS_H
#define __SIEVE_EXTENSIONS_H
#include "lib.h"
#include "sieve-common.h"
/*
* Per-extension object registry
*/
struct sieve_extension_objects {
const void *objects;
unsigned int count;
};
/*
* Extension definition
*/
struct sieve_extension_def {
const char *name;
/* Version */
unsigned int version;
/* Registration */
bool (*load)(const struct sieve_extension *ext, void **context);
void (*unload)(const struct sieve_extension *ext);
/* Compilation */
bool (*validator_load)
(const struct sieve_extension *ext, struct sieve_validator *validator);
bool (*generator_load)
(const struct sieve_extension *ext, const struct sieve_codegen_env *cgenv);
bool (*interpreter_load)
(const struct sieve_extension *ext, const struct sieve_runtime_env *renv,
sieve_size_t *address);
bool (*binary_load)
(const struct sieve_extension *ext, struct sieve_binary *binary);
/* Code dump */
bool (*binary_dump)
(const struct sieve_extension *ext, struct sieve_dumptime_env *denv);
bool (*code_dump)
(const struct sieve_extension *ext, const struct sieve_dumptime_env *denv,
sieve_size_t *address);
/* Objects */
struct sieve_extension_objects operations;
struct sieve_extension_objects operands;
};
/* Defining opcodes and operands */
#define SIEVE_EXT_DEFINE_NO_OBJECTS \
{ NULL, 0 }
#define SIEVE_EXT_DEFINE_OBJECT(OBJ) \
{ &OBJ, 1 }
#define SIEVE_EXT_DEFINE_OBJECTS(OBJS) \
{ OBJS, N_ELEMENTS(OBJS) }
#define SIEVE_EXT_GET_OBJECTS_COUNT(ext, field) \
ext->field->count;
#define SIEVE_EXT_DEFINE_NO_OPERATIONS \
.operations = SIEVE_EXT_DEFINE_NO_OBJECTS
#define SIEVE_EXT_DEFINE_OPERATION(OP) \
.operations = SIEVE_EXT_DEFINE_OBJECT(OP)
#define SIEVE_EXT_DEFINE_OPERATIONS(OPS) \
.operations = SIEVE_EXT_DEFINE_OBJECTS(OPS)
#define SIEVE_EXT_DEFINE_NO_OPERANDS \
.operands = SIEVE_EXT_DEFINE_NO_OBJECTS
#define SIEVE_EXT_DEFINE_OPERAND(OP) \
.operands = SIEVE_EXT_DEFINE_OBJECT(OP)
#define SIEVE_EXT_DEFINE_OPERANDS(OPS) \
.operands = SIEVE_EXT_DEFINE_OBJECTS(OPS)
/*
* Extension instance
*/
struct sieve_extension {
const struct sieve_extension_def *def;
int id;
struct sieve_instance *svinst;
void *context;
unsigned int required:1;
unsigned int loaded:1;
unsigned int enabled:1;
unsigned int dummy:1;
unsigned int global:1;
unsigned int implicit:1;
unsigned int overridden:1;
};
#define sieve_extension_is(ext, definition) \
( (ext)->def == &(definition) )
#define sieve_extension_name(ext) \
((ext)->def->name)
#define sieve_extension_name_is(ext, _name) \
( strcmp((ext)->def->name, (_name)) == 0 )
#define sieve_extension_version(ext) \
((ext)->def->version)
#define sieve_extension_version_is(ext, _version) \
((ext)->def->version == (_version))
/*
* Extensions init/deinit
*/
bool sieve_extensions_init(struct sieve_instance *svinst);
void sieve_extensions_configure(struct sieve_instance *svinst);
void sieve_extensions_deinit(struct sieve_instance *svinst);
/*
* Pre-loaded extensions
*/
const struct sieve_extension *const *sieve_extensions_get_preloaded
(struct sieve_instance *svinst, unsigned int *count_r);
/*
* Extension registry
*/
const struct sieve_extension *sieve_extension_register
(struct sieve_instance *svinst, const struct sieve_extension_def *extension,
bool load);
const struct sieve_extension *sieve_extension_require
(struct sieve_instance *svinst, const struct sieve_extension_def *extension,
bool load);
bool sieve_extension_reload(const struct sieve_extension *ext);
void sieve_extension_unregister(const struct sieve_extension *ext);
const struct sieve_extension *sieve_extension_replace
(struct sieve_instance *svinst,
const struct sieve_extension_def *extdef,
bool load);
void sieve_extension_override
(struct sieve_instance *svinst, const char *name,
const struct sieve_extension *ext);
unsigned int sieve_extensions_get_count(struct sieve_instance *svinst);
const struct sieve_extension *const *
sieve_extensions_get_all(struct sieve_instance *svinst,
unsigned int *count_r);
const struct sieve_extension *sieve_extension_get_by_id
(struct sieve_instance *svinst, unsigned int ext_id);
const struct sieve_extension *sieve_extension_get_by_name
(struct sieve_instance *svinst, const char *name);
const char *sieve_extensions_get_string
(struct sieve_instance *svinst);
void sieve_extensions_set_string
(struct sieve_instance *svinst, const char *ext_string,
bool global, bool implicit);
const struct sieve_extension *sieve_get_match_type_extension
(struct sieve_instance *svinst);
const struct sieve_extension *sieve_get_comparator_extension
(struct sieve_instance *svinst);
const struct sieve_extension *sieve_get_address_part_extension
(struct sieve_instance *svinst);
void sieve_enable_debug_extension(struct sieve_instance *svinst);
/*
* Capability registries
*/
struct sieve_extension_capabilities {
const char *name;
const char *(*get_string)(const struct sieve_extension *ext);
};
void sieve_extension_capabilities_register
(const struct sieve_extension *ext,
const struct sieve_extension_capabilities *cap);
void sieve_extension_capabilities_unregister
(const struct sieve_extension *ext);
const char *sieve_extension_capabilities_get_string
(struct sieve_instance *svinst, const char *cap_name);
#endif /* __SIEVE_EXTENSIONS_H */
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