/*
* call-seq:
* ssl.sysread(length) => string
* ssl.sysread(length, buffer) => buffer
*
* === Parameters
* * +length+ is a positive integer.
* * +buffer+ is a string used to store the result.
*/
static VALUE
ossl_ssl_read(int argc, VALUE *argv, VALUE self)
{
SSL *ssl;
int ilen, nread = 0;
VALUE len, str;
rb_scan_args(argc, argv, "11", &len, &str);
ilen = NUM2INT(len);
if(NIL_P(str)) {
str = rb_str_new(0, ilen);
} else {
StringValue(str);
rb_str_modify(str);
rb_str_resize(str, ilen);
}
if(ilen == 0) return str;
Data_Get_Struct(self, SSL, ssl);
int fd = rb_io_fd(ossl_ssl_get_io(self));
if (ssl) {
if(SSL_pending(ssl) <= 0)
rb_thread_wait_fd(fd);
for (;;) {
nread = SSL_read(ssl, RSTRING_PTR(str), RSTRING_LEN(str));
switch(ssl_get_error(ssl, nread)) {
case SSL_ERROR_NONE:
goto end;
case SSL_ERROR_ZERO_RETURN:
rb_eof_error();
case SSL_ERROR_WANT_WRITE:
rb_io_wait_writable(fd);
continue;
case SSL_ERROR_WANT_READ:
rb_io_wait_readable(fd);
continue;
case SSL_ERROR_SYSCALL:
if(ERR_peek_error() == 0 && nread == 0) rb_eof_error();
rb_sys_fail(0);
default:
ossl_raise(eSSLError, "SSL_read:");
}
}
}
else {
ID id_sysread = rb_intern("sysread");
rb_warning("SSL session is not started yet.");
return rb_funcall(ossl_ssl_get_io(self), id_sysread, 2, len, str);
}
end:
rb_str_set_len(str, nread);
OBJ_TAINT(str);
return str;
}
VALUE engine_read(VALUE self) {
ms_conn* conn;
char buf[512];
int bytes, n, error;
Data_Get_Struct(self, ms_conn, conn);
ERR_clear_error();
bytes = SSL_read(conn->ssl, (void*)buf, sizeof(buf));
if(bytes > 0) {
return rb_str_new(buf, bytes);
}
if(SSL_want_read(conn->ssl)) return Qnil;
error = SSL_get_error(conn->ssl, bytes);
if(error == SSL_ERROR_ZERO_RETURN) {
rb_eof_error();
} else {
raise_error(conn->ssl, bytes);
}
return Qnil;
}
static VALUE
ossl_ssl_read_internal(int argc, VALUE *argv, VALUE self, int nonblock)
{
SSL *ssl;
int ilen, nread = 0;
VALUE len, str;
rb_io_t *fptr;
rb_scan_args(argc, argv, "11", &len, &str);
ilen = NUM2INT(len);
if(NIL_P(str)) {
str = rb_bstr_new();
}
else{
StringValue(str);
rb_str_modify(str);
str = rb_str_bstr(str);
}
rb_bstr_resize(str, ilen);
if(ilen == 0) return str;
Data_Get_Struct(self, SSL, ssl);
GetOpenFile(ossl_ssl_get_io(self), fptr);
if (ssl) {
if(!nonblock && SSL_pending(ssl) <= 0)
rb_thread_wait_fd(FPTR_TO_FD(fptr));
for (;;){
nread = SSL_read(ssl, rb_bstr_bytes(str),
rb_bstr_length(str));
switch(ssl_get_error(ssl, nread)){
case SSL_ERROR_NONE:
goto end;
case SSL_ERROR_ZERO_RETURN:
rb_eof_error();
case SSL_ERROR_WANT_WRITE:
write_would_block(nonblock);
rb_io_wait_writable(FPTR_TO_FD(fptr));
continue;
case SSL_ERROR_WANT_READ:
read_would_block(nonblock);
rb_io_wait_readable(FPTR_TO_FD(fptr));
continue;
case SSL_ERROR_SYSCALL:
if(ERR_peek_error() == 0 && nread == 0) rb_eof_error();
rb_sys_fail(0);
default:
ossl_raise(eSSLError, "SSL_read:");
}
}
}
else {
ID meth = nonblock ? rb_intern("read_nonblock") : rb_intern("sysread");
rb_warning("SSL session is not started yet.");
return rb_funcall(ossl_ssl_get_io(self), meth, 2, len, str);
}
end:
rb_bstr_resize(str, nread);
OBJ_TAINT(str);
return str;
}
