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v/vlib/x/openssl/openssl.v

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module openssl
import net.openssl
import x.net
import time
// const (
// is_used = openssl.is_used
// )
pub struct SSLConn {
mut:
sslctx &C.SSL_CTX
ssl &C.SSL
handle int
duration time.Duration
}
enum Select {
read
write
except
}
pub fn new_ssl_conn() &SSLConn {
return &SSLConn{
sslctx: 0
ssl: 0
handle: 0
}
}
// shutdown closes the ssl connection and do clean up
pub fn (mut s SSLConn) shutdown() ? {
if s.ssl != 0 {
mut res := 0
for {
res = int(C.SSL_shutdown(s.ssl))
if res < 0 {
err_res := openssl.ssl_error(res, s.ssl) or {
break // We break to free rest of resources
}
if err_res == .ssl_error_want_read {
for {
ready := @select(s.handle, .read, s.duration)?
if ready {
break
}
}
continue
} else if err_res == .ssl_error_want_write {
for {
ready := @select(s.handle, .write, s.duration)?
if ready {
break
}
}
continue
} else {
println('error: $err_res')
return error('unexepedted ssl error $err_res')
}
C.SSL_free(s.ssl)
if s.sslctx != 0 {
C.SSL_CTX_free(s.sslctx)
}
return error('Could not connect using SSL. ($err_res),err')
} else if res == 0 {
continue
} else if res == 1 {
break
}
}
C.SSL_free(s.ssl)
}
if s.sslctx != 0 {
C.SSL_CTX_free(s.sslctx)
}
}
// connect to server using open ssl
pub fn (mut s SSLConn) connect(mut tcp_conn net.TcpConn) ? {
s.handle = tcp_conn.sock.handle
s.duration = tcp_conn.read_timeout()
// C.SSL_load_error_strings()
s.sslctx = C.SSL_CTX_new(C.SSLv23_client_method())
if s.sslctx == 0 {
return error("Couldn't get ssl context")
}
s.ssl = C.SSL_new(s.sslctx)
if s.ssl == 0 {
return error("Couldn't create OpenSSL instance.")
}
if C.SSL_set_fd(s.ssl, tcp_conn.sock.handle) != 1 {
return error("Couldn't assign ssl to socket.")
}
for {
res := C.SSL_connect(s.ssl)
if res != 1 {
err_res := openssl.ssl_error(res, s.ssl)?
if err_res == .ssl_error_want_read {
for {
ready := @select(s.handle, .read, s.duration)?
if ready {
break
}
}
continue
} else if err_res == .ssl_error_want_write {
for {
ready := @select(s.handle, .write, s.duration)?
if ready {
break
}
}
continue
}
return error('Could not connect using SSL. ($err_res),err')
}
println('CONNECT OK')
break
}
}
pub fn (mut s SSLConn) socket_read_into_ptr(buf_ptr byteptr, len int) ?int {
mut res := 0
for {
res = C.SSL_read(s.ssl, buf_ptr, len)
if res < 0 {
err_res := openssl.ssl_error(res, s.ssl)?
if err_res == .ssl_error_want_read {
for {
ready := @select(s.handle, .read, s.duration)?
if ready {
break
}
}
continue
} else if err_res == .ssl_error_want_write {
for {
ready := @select(s.handle, .write, s.duration)?
if ready {
break
}
}
continue
} else if err_res == .ssl_error_zero_return {
return 0
}
return error('Could not read using SSL. ($err_res),err')
}
break
}
return res
}
pub fn (mut s SSLConn) read_into(mut buffer []Byte) ?int {
res := s.socket_read_into_ptr(byteptr(buffer.data), buffer.len)?
return res
}
// write number of bytes to SSL connection
pub fn (mut s SSLConn) write(bytes []Byte) ? {
unsafe {
mut ptr_base := byteptr(bytes.data)
mut total_sent := 0
for total_sent < bytes.len {
ptr := ptr_base + total_sent
remaining := bytes.len - total_sent
mut sent := C.SSL_write(s.ssl, ptr, remaining)
if sent <= 0 {
err_res := openssl.ssl_error(sent, s.ssl)?
if err_res == .ssl_error_want_read {
for {
ready := @select(s.handle, .read, s.duration)?
if ready {
break
}
}
} else if err_res == .ssl_error_want_write {
for {
ready := @select(s.handle, .write, s.duration)?
if ready {
break
}
}
continue
} else if err_res == .ssl_error_zero_return {
return error('ssl write on closed connection') // Todo error_with_code close
}
return error_with_code('Could not write SSL. ($err_res),err', err_res)
}
total_sent += sent
}
}
}
// // ssl_error returns non error ssl code or error if unrecoverable and we should panic
// fn (mut s SSLConn) ssl_error(ret int) ?SSLError {
// res := C.SSL_get_error(s.ssl, ret)
// match SSLError(res) {
// .ssl_error_syscall { return error_with_code('unrecoverable syscall ($res)', res) }
// .ssl_error_ssl { return error_with_code('unrecoverable ssl protocol error ($res)',
// res) }
// else { return res }
// }
// }
// enum SSLError {
// ssl_error_none = C.SSL_ERROR_NONE
// ssl_error_ssl = C.SSL_ERROR_SSL
// ssl_error_want_read = C.SSL_ERROR_WANT_READ
// ssl_error_want_write = C.SSL_ERROR_WANT_WRITE
// ssl_error_want_x509_lookup = C.SSL_ERROR_WANT_X509_LOOKUP
// ssl_error_syscall = C.SSL_ERROR_SYSCALL
// ssl_error_zero_return = C.SSL_ERROR_ZERO_RETURN
// ssl_error_want_connect = C.SSL_ERROR_WANT_CONNECT
// ssl_error_want_accept = C.SSL_ERROR_WANT_ACCEPT
// ssl_error_want_async = C.SSL_ERROR_WANT_ASYNC
// ssl_error_want_async_job = C.SSL_ERROR_WANT_ASYNC_JOB
// ssl_error_want_client_hello_cb = C.SSL_ERROR_WANT_CLIENT_HELLO_CB
// }
/*
This is basically a copy of Emily socket implementation of select.
This have to be consolidated into common net lib features
when merging this to V
*/
[typedef]
pub struct C.fd_set {
}
// Select waits for an io operation (specified by parameter `test`) to be available
fn @select(handle int, test Select, timeout time.Duration) ?bool {
set := C.fd_set{}
C.FD_ZERO(&set)
C.FD_SET(handle, &set)
timeval_timeout := C.timeval{
tv_sec: u64(0)
tv_usec: u64(timeout.microseconds())
}
match test {
.read { net.socket_error(C.@select(handle, &set, C.NULL, C.NULL, &timeval_timeout))? }
.write { net.socket_error(C.@select(handle, C.NULL, &set, C.NULL, &timeval_timeout))? }
.except { net.socket_error(C.@select(handle, C.NULL, C.NULL, &set, &timeval_timeout))? }
}
return C.FD_ISSET(handle, &set)
}