nosni/nss.c

#include "common.h"

#include <stdio.h>
#include <dlfcn.h>
#include <nss/ssl.h>



SECStatus SSL_SNISocketConfigHook(PRFileDesc *fd,
SSLSNISocketConfig f,
void *arg) {
	// Debug
	printf("Interrupted socket config hook setter; dummy not implemented. Returning error.\n");
	fflush(stdout);

	// Report failure
	return SECFailure;
}

SECStatus SSL_SetURL(PRFileDesc *fd, const char *url) {
	// Get original function
	static typeof(SSL_SetURL) *orig = NULL;
	if (!orig) orig = dlsym(RTLD_NEXT, "SSL_SetURL");

	// Call original function as-is if domain isn't blocked
	if (!is_domain_blocked(url)) {
		return orig(fd, url);
	}

	// Debug
	printf("Interrupted URL setter for %s; setting IP address on success.\n", url);
	fflush(stdout);

	// Get IP addr as string
	url = resolve_hostname_to_str(url);
	if (!url) return SECFailure;

	// Call origin function
	return orig(fd, url);;
}