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/* Copyright (c) 2002-2016 Pigeonhole authors, see the included COPYING file
*/
#include "lib.h"
#include "str.h"
#include "array.h"
#include "sieve-common.h"
#include "sieve-extensions.h"
#include "sieve-code.h"
#include "sieve-ast.h"
#include "sieve-commands.h"
#include "sieve-binary.h"
#include "sieve-validator.h"
#include "sieve-generator.h"
#include "sieve-interpreter.h"
#include "sieve-dump.h"
#include "ext-variables-common.h"
/*
* Set command
*
* Syntax:
* set [MODIFIER] <name: string> <value: string>
*/
static bool cmd_set_registered
(struct sieve_validator *valdtr, const struct sieve_extension *ext,
struct sieve_command_registration *cmd_reg);
static bool cmd_set_validate
(struct sieve_validator *valdtr, struct sieve_command *cmd);
static bool cmd_set_generate
(const struct sieve_codegen_env *cgenv, struct sieve_command *ctx);
const struct sieve_command_def cmd_set = {
.identifier = "set",
.type = SCT_COMMAND,
.positional_args = 2,
.subtests = 0,
.block_allowed = FALSE,
.block_required = FALSE,
.registered = cmd_set_registered,
.validate = cmd_set_validate,
.generate = cmd_set_generate,
};
/*
* Set operation
*/
static bool cmd_set_operation_dump
(const struct sieve_dumptime_env *denv, sieve_size_t *address);
static int cmd_set_operation_execute
(const struct sieve_runtime_env *renv, sieve_size_t *address);
const struct sieve_operation_def cmd_set_operation = {
.mnemonic = "SET",
.ext_def = &variables_extension,
.code = EXT_VARIABLES_OPERATION_SET,
.dump = cmd_set_operation_dump,
.execute = cmd_set_operation_execute
};
/*
* Compiler context
*/
struct cmd_set_context {
ARRAY_TYPE(sieve_variables_modifier) modifiers;
};
/* Command registration */
static bool cmd_set_registered
(struct sieve_validator *valdtr, const struct sieve_extension *ext,
struct sieve_command_registration *cmd_reg)
{
sieve_variables_modifiers_link_tag(valdtr, ext, cmd_reg);
return TRUE;
}
/*
* Command validation
*/
static bool cmd_set_validate(struct sieve_validator *valdtr,
struct sieve_command *cmd)
{
const struct sieve_extension *this_ext = cmd->ext;
struct sieve_ast_argument *arg = cmd->first_positional;
pool_t pool = sieve_command_pool(cmd);
struct cmd_set_context *sctx;
/* Create command context */
sctx = p_new(pool, struct cmd_set_context, 1);
p_array_init(&sctx->modifiers, pool, 4);
cmd->data = (void *) sctx;
/* Validate modifiers */
if ( !sieve_variables_modifiers_validate
(valdtr, cmd, &sctx->modifiers) )
return FALSE;
/* Validate name argument */
if ( !sieve_validate_positional_argument
(valdtr, cmd, arg, "name", 1, SAAT_STRING) ) {
return FALSE;
}
if ( !sieve_variable_argument_activate
(this_ext, valdtr, cmd, arg, TRUE) ) {
return FALSE;
}
arg = sieve_ast_argument_next(arg);
/* Validate value argument */
if ( !sieve_validate_positional_argument
(valdtr, cmd, arg, "value", 2, SAAT_STRING) ) {
return FALSE;
}
return sieve_validator_argument_activate
(valdtr, cmd, arg, FALSE);
}
/*
* Code generation
*/
static bool cmd_set_generate
(const struct sieve_codegen_env *cgenv, struct sieve_command *cmd)
{
const struct sieve_extension *this_ext = cmd->ext;
struct sieve_binary_block *sblock = cgenv->sblock;
struct cmd_set_context *sctx = (struct cmd_set_context *) cmd->data;
sieve_operation_emit(sblock, this_ext, &cmd_set_operation);
/* Generate arguments */
if ( !sieve_generate_arguments(cgenv, cmd, NULL) )
return FALSE;
/* Generate modifiers */
if ( !sieve_variables_modifiers_generate
(cgenv, &sctx->modifiers) )
return FALSE;
return TRUE;
}
/*
* Code dump
*/
static bool cmd_set_operation_dump
(const struct sieve_dumptime_env *denv, sieve_size_t *address)
{
sieve_code_dumpf(denv, "SET");
sieve_code_descend(denv);
/* Print both variable name and string value */
if ( !sieve_opr_string_dump(denv, address, "variable") ||
!sieve_opr_string_dump(denv, address, "value") )
return FALSE;
return sieve_variables_modifiers_code_dump(denv, address);
}
/*
* Code execution
*/
static int cmd_set_operation_execute
(const struct sieve_runtime_env *renv, sieve_size_t *address)
{
struct sieve_variable_storage *storage;
ARRAY_TYPE(sieve_variables_modifier) modifiers;
unsigned int var_index;
string_t *value;
int ret = SIEVE_EXEC_OK;
/*
* Read the normal operands
*/
if ( (ret=sieve_variable_operand_read
(renv, address, "variable", &storage, &var_index)) <= 0 )
return ret;
if ( (ret=sieve_opr_string_read(renv, address, "string", &value)) <= 0 )
return ret;
if ( (ret=sieve_variables_modifiers_code_read
(renv, address, &modifiers)) <= 0 )
return ret;
/*
* Determine and assign the value
*/
sieve_runtime_trace(renv, SIEVE_TRLVL_COMMANDS, "set command");
sieve_runtime_trace_descend(renv);
/* Apply modifiers */
if ( (ret=sieve_variables_modifiers_apply
(renv, &modifiers, &value)) <= 0 )
return ret;
/* Actually assign the value if all is well */
i_assert ( value != NULL );
if ( !sieve_variable_assign(storage, var_index, value) )
return SIEVE_EXEC_BIN_CORRUPT;
/* Trace */
if ( sieve_runtime_trace_active(renv, SIEVE_TRLVL_COMMANDS) ) {
const char *var_name, *var_id;
(void)sieve_variable_get_identifier(storage, var_index, &var_name);
var_id = sieve_variable_get_varid(storage, var_index);
sieve_runtime_trace_here(renv, 0, "assign `%s' [%s] = \"%s\"",
var_name, var_id, str_c(value));
}
return SIEVE_EXEC_OK;
}
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