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add firewall rule, return all rules

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This commit is contained in:
Florian Hoss 2022-04-11 11:47:50 +02:00
parent 4d23c1039b
commit 2cc20a1d62
2 changed files with 78 additions and 10 deletions
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66
SourceCode/arduino/lib/Firewall/Firewall.cpp
View file

@ -1,15 +1,18 @@
#include "Firewall.h"
ESPFirewall::ESPFirewall()
ESPFirewall::ESPFirewall(int port)
{
log_i("Firewall!");
firewall_api->on("/api/v1/firewall", HTTP_GET, std::bind(&ESPFirewall::get_firewall_rules, this));
firewall_api->begin();
this->amount_of_rules = 0;
this->head = NULL;
log_i("Starting Firewall-API on %i", port);
this->firewall_api = new WebServer(port);
this->setup_routing();
}
void ESPFirewall::get_firewall_rules()
void ESPFirewall::setup_routing()
{
this->custom_message_response("Firewall", 200);
this->firewall_api->on("/api/v1/firewall", HTTP_GET, std::bind(&ESPFirewall::get_firewall_rules, this));
this->firewall_api->begin();
}
void ESPFirewall::custom_message_response(const char *message, int response_code)
@ -17,10 +20,59 @@ void ESPFirewall::custom_message_response(const char *message, int response_code
cJSON *json_response = cJSON_CreateObject();
cJSON_AddBoolToObject(json_response, "ok", true);
cJSON_AddStringToObject(json_response, "message", message);
firewall_api->send(response_code, "application/json", cJSON_Print(json_response));
this->firewall_api->send(response_code, "application/json", cJSON_Print(json_response));
cJSON_Delete(json_response);
}
void ESPFirewall::prepare_firewall_json(cJSON *jsonResponse, firewall_rule_t *link)
{
cJSON_AddStringToObject(jsonResponse, "status", "success");
cJSON_AddNumberToObject(jsonResponse, "rule", link->key);
cJSON_AddStringToObject(jsonResponse, "source", link->source);
cJSON_AddStringToObject(jsonResponse, "destination", link->destination);
cJSON_AddStringToObject(jsonResponse, "protocol", link->protocol);
cJSON_AddStringToObject(jsonResponse, "target", link->target);
}
firewall_rule_t *ESPFirewall::add_rule_to_firewall(char *source, char *destination, char *protocol, char *target)
{
firewall_rule_t *temp;
firewall_rule_t *link = (firewall_rule_t *)malloc(sizeof(firewall_rule_t));
link->key = ++amount_of_rules;
strcpy(link->source, source);
strcpy(link->destination, destination);
strcpy(link->protocol, protocol);
strcpy(link->target, target);
if (head == NULL)
{
head = link;
link->next = NULL;
return link;
}
temp = head;
while (temp->next != NULL)
{
temp = temp->next;
}
temp->next = link;
link->next = NULL;
return link;
}
void ESPFirewall::get_firewall_rules()
{
firewall_rule_t *ptr = head;
cJSON *json_response = cJSON_CreateArray();
while (ptr != NULL)
{
cJSON *json_firewall_rule = cJSON_CreateObject();
prepare_firewall_json(json_firewall_rule, ptr);
cJSON_AddItemToArray(json_response, json_firewall_rule);
ptr = ptr->next;
}
this->firewall_api->send(200, "application/json", cJSON_Print(json_response));
}
void ESPFirewall::handle_clients()
{
this->firewall_api->handleClient();

22
SourceCode/arduino/lib/Firewall/Firewall.h
View file

@ -5,15 +5,31 @@
#include "cJSON.h"
#include "esp32-hal-log.h"
typedef struct firewall_rule
{
int key;
char source[IP4ADDR_STRLEN_MAX];
char destination[IP4ADDR_STRLEN_MAX];
char protocol[4];
char target[7];
struct firewall_rule *next;
} firewall_rule_t;
class ESPFirewall
{
WebServer *firewall_api = new WebServer(8080);
void get_firewall_rules();
WebServer *firewall_api;
int amount_of_rules;
struct firewall_rule *head;
void setup_routing();
void custom_message_response(const char *message, int response_code);
void prepare_firewall_json(cJSON *jsonResponse, firewall_rule_t *link);
firewall_rule_t *add_rule_to_firewall(char *source, char *destination, char *protocol, char *target);
void get_firewall_rules();
public:
ESPFirewall();
ESPFirewall(int port = 8080);
void handle_clients();
};