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ext-copy.c
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ext-copy.c
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/* Copyright (c) 2002-2017 Pigeonhole authors, see the included COPYING file
*/
/* Extension copy
* --------------
*
* Authors: Stephan Bosch
* Specification: RFC 3894
* Implementation: full
* Status: testing
*
*/
#include "sieve-common.h"
#include "sieve-code.h"
#include "sieve-extensions.h"
#include "sieve-actions.h"
#include "sieve-commands.h"
#include "sieve-validator.h"
#include "sieve-generator.h"
#include "sieve-interpreter.h"
#include "sieve-result.h"
#include "sieve-ext-copy.h"
/*
* Forward declarations
*/
static const struct sieve_argument_def copy_tag;
static const struct sieve_operand_def copy_side_effect_operand;
/*
* Extension
*/
static bool ext_copy_validator_load
(const struct sieve_extension *ext, struct sieve_validator *valdtr);
const struct sieve_extension_def copy_extension = {
.name = "copy",
.validator_load = ext_copy_validator_load,
SIEVE_EXT_DEFINE_OPERAND(copy_side_effect_operand)
};
static bool ext_copy_validator_load
(const struct sieve_extension *ext, struct sieve_validator *valdtr)
{
/* Register copy tag with redirect and fileinto commands and we don't care
* whether these commands are registered or even whether they will be
* registered at all. The validator handles either situation gracefully
*/
sieve_validator_register_external_tag
(valdtr, "redirect", ext, ©_tag, SIEVE_OPT_SIDE_EFFECT);
sieve_validator_register_external_tag
(valdtr, "fileinto", ext, ©_tag, SIEVE_OPT_SIDE_EFFECT);
return TRUE;
}
/*
* Side effect
*/
static void seff_copy_print
(const struct sieve_side_effect *seffect, const struct sieve_action *action,
const struct sieve_result_print_env *rpenv, bool *keep);
static void seff_copy_post_commit
(const struct sieve_side_effect *seffect, const struct sieve_action *action,
const struct sieve_action_exec_env *aenv, void *tr_context, bool *keep);
const struct sieve_side_effect_def copy_side_effect = {
SIEVE_OBJECT("copy", ©_side_effect_operand, 0),
.to_action = &act_store,
.print = seff_copy_print,
.post_commit = seff_copy_post_commit
};
/*
* Tagged argument
*/
static bool tag_copy_validate
(struct sieve_validator *valdtr, struct sieve_ast_argument **arg,
struct sieve_command *cmd);
static bool tag_copy_generate
(const struct sieve_codegen_env *cgenv, struct sieve_ast_argument *arg,
struct sieve_command *cmd);
static const struct sieve_argument_def copy_tag = {
.identifier = "copy",
.validate = tag_copy_validate,
.generate = tag_copy_generate
};
/*
* Operand
*/
static const struct sieve_extension_objects ext_side_effects =
SIEVE_EXT_DEFINE_SIDE_EFFECT(copy_side_effect);
static const struct sieve_operand_def copy_side_effect_operand = {
.name = "copy operand",
.ext_def = ©_extension,
.class = &sieve_side_effect_operand_class,
.interface = &ext_side_effects
};
/*
* Tag registration
*/
void sieve_ext_copy_register_tag
(struct sieve_validator *valdtr, const struct sieve_extension *copy_ext,
const char *command)
{
if ( sieve_validator_extension_loaded(valdtr, copy_ext) ) {
sieve_validator_register_external_tag
(valdtr, command, copy_ext, ©_tag, SIEVE_OPT_SIDE_EFFECT);
}
}
/*
* Tag validation
*/
static bool tag_copy_validate
(struct sieve_validator *valdtr ATTR_UNUSED,
struct sieve_ast_argument **arg ATTR_UNUSED,
struct sieve_command *cmd ATTR_UNUSED)
{
*arg = sieve_ast_argument_next(*arg);
return TRUE;
}
/*
* Code generation
*/
static bool tag_copy_generate
(const struct sieve_codegen_env *cgenv, struct sieve_ast_argument *arg,
struct sieve_command *cmd ATTR_UNUSED)
{
if ( sieve_ast_argument_type(arg) != SAAT_TAG ) {
return FALSE;
}
sieve_opr_side_effect_emit
(cgenv->sblock, sieve_argument_ext(arg), ©_side_effect);
return TRUE;
}
/*
* Side effect implementation
*/
static void seff_copy_print
(const struct sieve_side_effect *seffect ATTR_UNUSED,
const struct sieve_action *action ATTR_UNUSED,
const struct sieve_result_print_env *rpenv, bool *keep)
{
sieve_result_seffect_printf(rpenv, "preserve implicit keep");
*keep = TRUE;
}
static void seff_copy_post_commit
(const struct sieve_side_effect *seffect ATTR_UNUSED,
const struct sieve_action *action ATTR_UNUSED,
const struct sieve_action_exec_env *aenv ATTR_UNUSED,
void *tr_context ATTR_UNUSED, bool *keep)
{
*keep = TRUE;
}