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/* Copyright (c) 2002-2018 Pigeonhole authors, see the included COPYING file
*/
#include "sieve-common.h"
#include "sieve-commands.h"
#include "sieve-code.h"
#include "sieve-binary.h"
#include "sieve-dump.h"
#include "ext-variables-common.h"
#include "ext-variables-namespaces.h"
#include <ctype.h>
/*
* Namespace registry
*/
void sieve_variables_namespace_register
(const struct sieve_extension *var_ext, struct sieve_validator *valdtr,
const struct sieve_extension *ext,
const struct sieve_variables_namespace_def *nspc_def)
{
struct ext_variables_validator_context *ctx =
ext_variables_validator_context_get(var_ext, valdtr);
sieve_validator_object_registry_add(ctx->namespaces, ext, &nspc_def->obj_def);
}
bool ext_variables_namespace_exists
(const struct sieve_extension *var_ext, struct sieve_validator *valdtr,
const char *identifier)
{
struct ext_variables_validator_context *ctx =
ext_variables_validator_context_get(var_ext, valdtr);
return sieve_validator_object_registry_find
(ctx->namespaces, identifier, NULL);
}
const struct sieve_variables_namespace *ext_variables_namespace_create_instance
(const struct sieve_extension *var_ext, struct sieve_validator *valdtr,
struct sieve_command *cmd, const char *identifier)
{
struct ext_variables_validator_context *ctx =
ext_variables_validator_context_get(var_ext, valdtr);
struct sieve_object object;
struct sieve_variables_namespace *nspc;
pool_t pool;
if ( !sieve_validator_object_registry_find
(ctx->namespaces, identifier, &object) )
return NULL;
pool = sieve_command_pool(cmd);
nspc = p_new(pool, struct sieve_variables_namespace, 1);
nspc->object = object;
nspc->def = (const struct sieve_variables_namespace_def *) object.def;
return nspc;
}
/*
* Namespace variable argument
*/
struct arg_namespace_variable {
const struct sieve_variables_namespace *namespace;
void *data;
};
static bool arg_namespace_generate
(const struct sieve_codegen_env *cgenv, struct sieve_ast_argument *arg,
struct sieve_command *context ATTR_UNUSED);
const struct sieve_argument_def namespace_argument = {
.identifier = "@namespace",
.generate = arg_namespace_generate
};
bool ext_variables_namespace_argument_activate
(const struct sieve_extension *this_ext, struct sieve_validator *valdtr,
struct sieve_ast_argument *arg, struct sieve_command *cmd,
ARRAY_TYPE(sieve_variable_name) *var_name, bool assignment)
{
pool_t pool = sieve_command_pool(cmd);
struct sieve_ast *ast = arg->ast;
const struct sieve_variables_namespace *nspc;
struct arg_namespace_variable *var;
const struct sieve_variable_name *name_element = array_idx(var_name, 0);
void *var_data = NULL;
nspc = ext_variables_namespace_create_instance
(this_ext, valdtr, cmd, str_c(name_element->identifier));
if ( nspc == NULL ) {
sieve_argument_validate_error(valdtr, arg,
"referring to variable in unknown namespace '%s'",
str_c(name_element->identifier));
return FALSE;
}
if ( nspc->def != NULL && nspc->def->validate != NULL &&
!nspc->def->validate
(valdtr, nspc, arg, cmd, var_name, &var_data, assignment) ) {
return FALSE;
}
var = p_new(pool, struct arg_namespace_variable, 1);
var->namespace = nspc;
var->data = var_data;
arg->argument = sieve_argument_create(ast, &namespace_argument, this_ext, 0);
arg->argument->data = (void *) var;
return TRUE;
}
struct sieve_ast_argument *ext_variables_namespace_argument_create
(const struct sieve_extension *this_ext,
struct sieve_validator *valdtr, struct sieve_ast_argument *parent_arg,
struct sieve_command *cmd, ARRAY_TYPE(sieve_variable_name) *var_name)
{
struct sieve_ast *ast = parent_arg->ast;
struct sieve_ast_argument *new_arg;
new_arg = sieve_ast_argument_create(ast, sieve_ast_argument_line(parent_arg));
new_arg->type = SAAT_STRING;
if ( !ext_variables_namespace_argument_activate
(this_ext, valdtr, new_arg, cmd, var_name, FALSE) )
return NULL;
return new_arg;
}
static bool arg_namespace_generate
(const struct sieve_codegen_env *cgenv, struct sieve_ast_argument *arg,
struct sieve_command *cmd)
{
struct sieve_argument *argument = arg->argument;
struct arg_namespace_variable *var =
(struct arg_namespace_variable *) argument->data;
const struct sieve_variables_namespace *nspc = var->namespace;
if ( nspc->def != NULL && nspc->def->generate != NULL )
return nspc->def->generate(cgenv, nspc, arg, cmd, var->data);
return TRUE;
}
/*
* Namespace variable operands
*/
const struct sieve_operand_class sieve_variables_namespace_operand_class =
{ "variable-namespace" };
static bool opr_namespace_variable_dump
(const struct sieve_dumptime_env *denv, const struct sieve_operand *oprnd,
sieve_size_t *address);
static int opr_namespace_variable_read
(const struct sieve_runtime_env *renv, const struct sieve_operand *oprnd,
sieve_size_t *address, string_t **str_r);
static const struct sieve_opr_string_interface namespace_variable_interface = {
opr_namespace_variable_dump,
opr_namespace_variable_read
};
const struct sieve_operand_def namespace_variable_operand = {
.name = "namespace",
.ext_def = &variables_extension,
.code = EXT_VARIABLES_OPERAND_NAMESPACE_VARIABLE,
.class = &string_class,
.interface = &namespace_variable_interface
};
void sieve_variables_opr_namespace_variable_emit
(struct sieve_binary_block *sblock, const struct sieve_extension *var_ext,
const struct sieve_extension *ext,
const struct sieve_variables_namespace_def *nspc_def)
{
i_assert( sieve_extension_is(var_ext, variables_extension) );
sieve_operand_emit(sblock, var_ext, &namespace_variable_operand);
sieve_opr_object_emit(sblock, ext, &nspc_def->obj_def);
}
static bool opr_namespace_variable_dump
(const struct sieve_dumptime_env *denv, const struct sieve_operand *oprnd,
sieve_size_t *address)
{
struct sieve_variables_namespace nspc;
struct sieve_operand nsoprnd;
if ( !sieve_operand_read(denv->sblock, address, NULL, &nsoprnd) ) {
return FALSE;
}
if ( !sieve_opr_object_read_data
(denv->sblock, &nsoprnd, &sieve_variables_namespace_operand_class, address,
&nspc.object) ) {
return FALSE;
}
nspc.def = (const struct sieve_variables_namespace_def *) nspc.object.def;
if ( nspc.def == NULL || nspc.def->dump_variable == NULL )
return FALSE;
return nspc.def->dump_variable(denv, &nspc, oprnd, address);
}
static int opr_namespace_variable_read
(const struct sieve_runtime_env *renv, const struct sieve_operand *oprnd,
sieve_size_t *address, string_t **str_r)
{
struct sieve_variables_namespace nspc;
if ( !sieve_opr_object_read
(renv, &sieve_variables_namespace_operand_class, address, &nspc.object) ) {
sieve_runtime_trace_operand_error(renv, oprnd,
"variable namespace operand corrupt: failed to read");
return SIEVE_EXEC_BIN_CORRUPT;
}
nspc.def = (const struct sieve_variables_namespace_def *) nspc.object.def;
if ( nspc.def == NULL || nspc.def->read_variable == NULL )
return SIEVE_EXEC_FAILURE;
return nspc.def->read_variable(renv, &nspc, oprnd, address, str_r);
}
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