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// SPDX-License-Identifier: GPL-3.0-or-later
/* seitan - Syscall Expressive Interpreter, Transformer and Notifier
*
* cooker/parse.c - JSON recipe parsing
*
* Copyright 2023 Red Hat GmbH
* Author: Stefano Brivio <sbrivio@redhat.com>
*/
#include "parson.h"
#include "calls.h"
#include "cooker.h"
#include "gluten.h"
#include "match.h"
#include "emit.h"
#include "util.h"
#include "calls/net.h"
static void handle_call(struct gluten_ctx *g, JSON_Value *value)
{
(void)g;
(void)value;
}
static void handle_inject(struct gluten_ctx *g, JSON_Value *value)
{
(void)g;
(void)value;
}
static void handle_limit(struct gluten_ctx *g, JSON_Value *value)
{
(void)g;
(void)value;
}
static void handle_return(struct gluten_ctx *g, JSON_Value *value)
{
(void)g;
(void)value;
}
static void handle_block(struct gluten_ctx *g, JSON_Value *value)
{
(void)g;
(void)value;
}
static void handle_context(struct gluten_ctx *g, JSON_Value *value)
{
(void)g;
(void)value;
}
/**
* struct rule_parser - Parsing handler for JSON rule type
* @type: JSON key name
* @fn: Parsing function
*/
struct rule_parser {
const char *type;
void (*fn)(struct gluten_ctx *g, JSON_Value *value);
} parsers[] = {
{ "match", handle_matches },
{ "call", handle_call },
{ "inject", handle_inject },
{ "limit", handle_limit },
{ "return", handle_return },
{ "block", handle_block },
{ "context", handle_context },
{ NULL, NULL },
};
/**
* parse_block() - Parse a transformation block with rules
* @g: gluten context
* @block: Array of rules in block
*/
static void parse_block(struct gluten_ctx *g, JSON_Object *block)
{
unsigned i;
memset(g->selected_arg, 0, sizeof(g->selected_arg));
memset(g->tags, 0, sizeof(g->tags));
g->lr = g->ip;
for (i = 0; i < json_object_get_count(block); i++) {
struct rule_parser *parser;
JSON_Value *rule;
const char *type;
type = json_object_get_name(block, i);
rule = json_object_get_value(block, type);
for (parser = parsers; parser->type; parser++) {
if (!strcmp(type, parser->type)) {
parser->fn(g, rule);
break;
}
}
if (!parser->type)
die(" Invalid rule type: \"%s\"", type);
}
link_block(g);
}
/**
* parse_file() - Entry point for parsing of a JSON input file
* @g: gluten context
* @path: Input file path
*/
void parse_file(struct gluten_ctx *g, const char *path)
{
JSON_Array *blocks;
JSON_Value *root;
JSON_Object *obj;
unsigned i;
root = json_parse_file_with_comments(path);
if (json_value_get_type(root) != JSONArray)
die("Invalid input file %s", path);
blocks = json_value_get_array(root);
for (i = 0; i < json_array_get_count(blocks); i++) {
obj = json_array_get_object(blocks, i);
debug("Parsing block %i", i);
parse_block(g, obj);
}
}
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