Simple WebDriver

webdriver.c

#include <stdio.h>
#include "./easy-curl.h" //https://gist.github.com/opsJson/6200d1fe4666b6bfa6919677a05428b0

char _WEBDRIVER_SESSION[33];

typedef enum WEBDRIVER_CODE {
	WEBDRIVER_SUCCESS,
	WEBDRIVER_ERROR_JAVASCRIPT,
	WEBDRIVER_ERROR_NO_SESSION
} WEBDRIVER_CODE;

void webdriver_init() {

	//open webdriver
	ShellExecuteA(NULL, "open", "msedgedriver.exe", NULL, NULL, 0);
	
	//open webdriver session
	long int code;
	char *response = GO("POST", "localhost:9515/session", "{\"capabilities\":{}}", &code, "");
	
	if (code != 200)
	{
		fprintf(stderr, "ERROR: Could not create webdriver session.\n");
		
		ShellExecuteA(NULL, "open", "taskkill", "/f /im \"msedgedriver.exe\"", NULL, 0);
		
		exit(1);
	}
	
	//get session
	char *token = "sessionId\":\"";
	char *sessionID = strstr(response, token);
	sessionID += strlen(token);
	
	char *aux = strstr(sessionID, "\"");
	if (aux == NULL)
	{
		fprintf(stderr, "ERROR: Could not create webdriver session.\n");
		
		ShellExecuteA(NULL, "open", "taskkill", "/f /im \"msedgedriver.exe\"", NULL, 0);
		
		exit(1);
	}
	*aux = 0;
	
	snprintf(_WEBDRIVER_SESSION, sizeof(_WEBDRIVER_SESSION)-1, "%s", sessionID);
	
	free(response);
}

void webdriver_cleanup() {
	char url[128];
	
	//close webdriver session
	snprintf(url, sizeof(url)-1, "localhost:9515/session/%s/window", _WEBDRIVER_SESSION);
	GO("DELETE", url, "", 0, "");
	
	//close webdriver
	ShellExecuteA(NULL, "open", "taskkill", "/f /im \"msedgedriver.exe\"", NULL, 0);
}

WEBDRIVER_CODE webdriver_execute(char *script) {
	long int code;
	char data[1024];
	char url[128];
	char *r;
	
	snprintf(url, sizeof(url)-1, "localhost:9515/session/%s/execute/sync", _WEBDRIVER_SESSION);
	
	snprintf(data, sizeof(data)-1, "{\"script\":\"%s\",\"args\":[]}", script);
	
	r = GO("POST", url, data, &code, "");
	
	free(r);
	
	if (code == 500) return WEBDRIVER_ERROR_JAVASCRIPT;
	if (code == 404) return WEBDRIVER_ERROR_NO_SESSION;
	
	return WEBDRIVER_SUCCESS;
}

/*///////////////////////////////////
	
		Testing:
		
///////////////////////////////////*/

int main(void) {
	
	webdriver_init();
	
	webdriver_execute("window.location.href = 'https://google.com'");
	
	webdriver_cleanup();
	
	return 0;
}