Topic: Unable to connect to smtp.gmail.com 465
Hi, I need to learn how to use wolfssl so, I have write a client to connect to a local server with a self signed certificate and it works.
Now I want to connect to a real server so I'm trying to connect to smtp.gmail.com but my client does not work. I obtain the error
wolfSSL_connect() Error!!!
Error: -188, ASN no signer error to confirm failureI have downloaded the certificate with this command line:
openssl s_client -showcerts -connect smtp.gmail.com:465 </dev/null | sed -n -e '/-.BEGIN/,/-.END/ p' > gmail.crtand this is my client. To start it please type:
./Test02 smtp.gmail.com 465 gmail.crt
Can anyone help me?
Best regards.
#include <QCoreApplication>
#include "QDebug"
#include <wolfssl/options.h>
#include <wolfssl/ssl.h>
int main(int argc, char *argv[]) {
QString RemoteServer;
QString Certificate;
int RemoteSocket= 0;
if (argc> 2) {
RemoteServer= argv[1];
RemoteSocket= QString(argv[2]).toInt();
Certificate= argv[3];
qDebug() << RemoteServer << RemoteSocket << Certificate;
}
wolfSSL_Debugging_ON();
int Result= wolfSSL_Init();
if (Result!= WOLFSSL_SUCCESS) printf("wolfSSL_Init() Error!!!\n");
else {
WOLFSSL_CTX *Context= wolfSSL_CTX_new(wolfTLS_client_method());
if (!Context) printf("wolfSSL_CTX_new() Error!!!\n");
else {
//Result = wolfSSL_CTX_UseSNI(Context, WOLFSSL_SNI_HOST_NAME, Certificate.toStdString().c_str(), Certificate.toStdString().size());
Result= wolfSSL_CTX_use_certificate_file(Context, Certificate.toStdString().c_str(), SSL_FILETYPE_PEM);
if (Result!= WOLFSSL_SUCCESS) printf("wolfSSL_CTX_use_certificate_file() Error!!!\n");
else {
if (Result!= WOLFSSL_SUCCESS) printf("wolfSSL_CTX_set_cipher_list() Error!!!\n");
else {
Result= wolfSSL_CTX_load_verify_locations(Context, Certificate.toStdString().c_str(), nullptr);
if (Result!= WOLFSSL_SUCCESS) printf("wolfSSL_CTX_load_verify_locations() Error!!!\n");
else {
struct hostent *he= gethostbyname(RemoteServer.toStdString().c_str());
if (!he) printf("gethostbyname() Error!!!\n");
else {
struct in_addr **addr_list= (struct in_addr**)he->h_addr_list;
if (!addr_list[0]) printf("addr_list Error!!!\n");
else {
struct sockaddr_in AddrCloud;
AddrCloud.sin_addr.s_addr= *(long*)(he->h_addr);
AddrCloud.sin_family= AF_INET;
AddrCloud.sin_port= htons(RemoteSocket);
int Socket= socket(AF_INET, SOCK_STREAM, IPPROTO_IP);
if (Socket< 0) printf("SocketClient Error!!!\n");
else {
//wolfSSL_CTX_set_verify(Context, SSL_VERIFY_PEER | SSL_VERIFY_FAIL_IF_NO_PEER_CERT, nullptr);
WOLFSSL *ssl= wolfSSL_new(Context);
if (!ssl) printf("wolfSSL_new() Error!!!\n");
else {
Result= wolfSSL_set_fd(ssl, Socket);
if (Result!= WOLFSSL_SUCCESS) printf("wolfSSL_set_fd() Error!!!\n");
else {
Result= connect(Socket, (struct sockaddr*)&AddrCloud, sizeof(AddrCloud));
if (Result!= 0) printf("connect() Error!!!\n");
else {
printf("CLIENT_CONNECTION_OPEN, try to bring up ssl client layer...\n");
Result= wolfSSL_connect(ssl);
if (Result!= WOLFSSL_SUCCESS) {
printf("wolfSSL_connect() Error!!!\n");
Result= wolfSSL_get_error(ssl, Result);
char Buffer[128];
wolfSSL_ERR_error_string(Result, Buffer);
printf("Error: %d, %s\n", Result, Buffer);
} else {
printf("CLIENT_CONNECTION_OPEN, ssl client layer ok\n");
printf("SSL_get_version() %s\n", wolfSSL_get_version(ssl));
printf("SSL_get_cipher() %s\n", wolfSSL_get_cipher(ssl));
if (wolfSSL_get_peer_certificate(ssl)) {
Result= wolfSSL_get_verify_result(ssl);
if (Result== X509_V_OK) printf("Certiticate Verification Succeeded\n");
else if (Result== X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT) printf("Certiticate X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT Error!!!\n");
else if (Result== X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN) printf("X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN Error!!!\n");
else {
printf("Certiticate Verification Failed %d\n", Result);
}
}
char Buffer[]= "Hello world!!!\n";
Result= wolfSSL_write(ssl, Buffer, sizeof(Buffer));
if (Result!= sizeof(Buffer)) printf("wolfSSL_write() Error!!!\n");
else {
Result= wolfSSL_pending(ssl);
if (Result> 0) {
memset(Buffer, '0', sizeof(Buffer));
Result= wolfSSL_read(ssl, Buffer, sizeof(Buffer));
printf("%d, %s\n", Result, Buffer);
}
}
printf("ee1\n");
wolfSSL_shutdown(ssl);
printf("ee2\n");
}
}
}
wolfSSL_free(ssl);
}
shutdown(Socket, 0);
close(Socket);
}
}
}
}
}
}
wolfSSL_CTX_free(Context);
}
wolfSSL_Cleanup();
}
return 0;
}