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Add methods to ssl.SSLContext for handling self-signed certs

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This commit is contained in:
Tim Hawes 2021-11-27 13:42:11 +00:00
parent ef414bf1bd
commit c325633f8e
3 changed files with 105 additions and 0 deletions
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33
ports/espressif/common-hal/ssl/SSLContext.c
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@ -29,6 +29,8 @@
#include "bindings/espidf/__init__.h"
#include "components/mbedtls/esp_crt_bundle/include/esp_crt_bundle.h"
#include "py/runtime.h"
void common_hal_ssl_sslcontext_construct(ssl_sslcontext_obj_t *self) {
@ -62,3 +64,34 @@ ssl_sslsocket_obj_t *common_hal_ssl_sslcontext_wrap_socket(ssl_sslcontext_obj_t
return sock;
}
void common_hal_ssl_sslcontext_load_verify_locations(ssl_sslcontext_obj_t *self,
const char *cadata) {
self->ssl_config.crt_bundle_attach = NULL;
self->ssl_config.use_global_ca_store = false;
self->ssl_config.cacert_buf = (const unsigned char *)cadata;
self->ssl_config.cacert_bytes = strlen(cadata) + 1;
}
void common_hal_ssl_sslcontext_set_default_verify_paths(ssl_sslcontext_obj_t *self) {
self->ssl_config.crt_bundle_attach = esp_crt_bundle_attach;
self->ssl_config.use_global_ca_store = true;
self->ssl_config.cacert_buf = NULL;
self->ssl_config.cacert_bytes = 0;
}
bool common_hal_ssl_sslcontext_get_check_hostname(ssl_sslcontext_obj_t *self) {
if (self->ssl_config.skip_common_name) {
return 0;
} else {
return 1;
}
}
void common_hal_ssl_sslcontext_set_check_hostname(ssl_sslcontext_obj_t *self, bool value) {
if (value) {
self->ssl_config.skip_common_name = 0;
} else {
self->ssl_config.skip_common_name = 1;
}
}

64
shared-bindings/ssl/SSLContext.c
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@ -29,6 +29,7 @@
#include "py/objtuple.h"
#include "py/objlist.h"
#include "py/objproperty.h"
#include "py/runtime.h"
#include "py/mperrno.h"
@ -51,6 +52,66 @@ STATIC mp_obj_t ssl_sslcontext_make_new(const mp_obj_type_t *type, size_t n_args
return MP_OBJ_FROM_PTR(s);
}
//| def load_verify_locations(self, cadata: Optional[str] = None) -> None:
//| """Load a set of certification authority (CA) certificates used to validate
//| other peers' certificates."""
//|
STATIC mp_obj_t ssl_sslcontext_load_verify_locations(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
enum { ARG_cadata };
static const mp_arg_t allowed_args[] = {
{ MP_QSTR_cadata, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = mp_const_none} },
};
ssl_sslcontext_obj_t *self = MP_OBJ_TO_PTR(pos_args[0]);
mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
mp_arg_parse_all(n_args - 1, pos_args + 1, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
const char *cadata = mp_obj_str_get_str(args[ARG_cadata].u_obj);
common_hal_ssl_sslcontext_load_verify_locations(self, cadata);
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_KW(ssl_sslcontext_load_verify_locations_obj, 1, ssl_sslcontext_load_verify_locations);
//| def set_default_verify_paths(self) -> None:
//| """Load a set of default certification authority (CA) certificates."""
//|
STATIC mp_obj_t ssl_sslcontext_set_default_verify_paths(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
ssl_sslcontext_obj_t *self = MP_OBJ_TO_PTR(pos_args[0]);
common_hal_ssl_sslcontext_set_default_verify_paths(self);
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_KW(ssl_sslcontext_set_default_verify_paths_obj, 1, ssl_sslcontext_set_default_verify_paths);
//| check_hostname: bool
//| """Whether to match the peer certificate's hostname."""
//|
STATIC mp_obj_t ssl_sslcontext_get_check_hostname(mp_obj_t self_in) {
ssl_sslcontext_obj_t *self = MP_OBJ_TO_PTR(self_in);
return mp_obj_new_bool(common_hal_ssl_sslcontext_get_check_hostname(self));
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(ssl_sslcontext_get_check_hostname_obj, ssl_sslcontext_get_check_hostname);
STATIC mp_obj_t ssl_sslcontext_set_check_hostname(mp_obj_t self_in, mp_obj_t value) {
ssl_sslcontext_obj_t *self = MP_OBJ_TO_PTR(self_in);
common_hal_ssl_sslcontext_set_check_hostname(self, mp_obj_is_true(value));
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(ssl_sslcontext_set_check_hostname_obj, ssl_sslcontext_set_check_hostname);
const mp_obj_property_t ssl_sslcontext_check_hostname_obj = {
.base.type = &mp_type_property,
.proxy = {(mp_obj_t)&ssl_sslcontext_get_check_hostname_obj,
(mp_obj_t)&ssl_sslcontext_set_check_hostname_obj,
MP_ROM_NONE},
};
//| def wrap_socket(self, sock: socketpool.Socket, *, server_side: bool = False, server_hostname: Optional[str] = None) -> ssl.SSLSocket:
//| """Wraps the socket into a socket-compatible class that handles SSL negotiation.
//| The socket must be of type SOCK_STREAM."""
@ -85,6 +146,9 @@ STATIC MP_DEFINE_CONST_FUN_OBJ_KW(ssl_sslcontext_wrap_socket_obj, 1, ssl_sslcont
STATIC const mp_rom_map_elem_t ssl_sslcontext_locals_dict_table[] = {
{ MP_ROM_QSTR(MP_QSTR_wrap_socket), MP_ROM_PTR(&ssl_sslcontext_wrap_socket_obj) },
{ MP_ROM_QSTR(MP_QSTR_load_verify_locations), MP_ROM_PTR(&ssl_sslcontext_load_verify_locations_obj) },
{ MP_ROM_QSTR(MP_QSTR_set_default_verify_paths), MP_ROM_PTR(&ssl_sslcontext_set_default_verify_paths_obj) },
{ MP_ROM_QSTR(MP_QSTR_check_hostname), MP_ROM_PTR(&ssl_sslcontext_check_hostname_obj) },
};
STATIC MP_DEFINE_CONST_DICT(ssl_sslcontext_locals_dict, ssl_sslcontext_locals_dict_table);

8
shared-bindings/ssl/SSLContext.h
View File

@ -39,4 +39,12 @@ void common_hal_ssl_sslcontext_construct(ssl_sslcontext_obj_t *self);
ssl_sslsocket_obj_t *common_hal_ssl_sslcontext_wrap_socket(ssl_sslcontext_obj_t *self,
socketpool_socket_obj_t *sock, bool server_side, const char *server_hostname);
void common_hal_ssl_sslcontext_load_verify_locations(ssl_sslcontext_obj_t *self,
const char *cadata);
void common_hal_ssl_sslcontext_set_default_verify_paths(ssl_sslcontext_obj_t *self);
bool common_hal_ssl_sslcontext_get_check_hostname(ssl_sslcontext_obj_t *self);
void common_hal_ssl_sslcontext_set_check_hostname(ssl_sslcontext_obj_t *self, bool value);
#endif // MICROPY_INCLUDED_SHARED_BINDINGS_SSL_SSLCONTEXT_H