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extmod/modwebrepl: Initial implementation of "get file" operation.

This commit is contained in:
Paul Sokolovsky 2016-04-29 01:02:39 +03:00
parent 25d0f7d59d
commit 6514ff6160
1 changed files with 49 additions and 15 deletions
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64
extmod/modwebrepl.c
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@ -54,6 +54,8 @@ struct webrepl_file {
char fname[64];
} __attribute__((packed));
enum { PUT_FILE = 1, GET_FILE, LIST_DIR };
typedef struct _mp_obj_webrepl_t {
mp_obj_base_t base;
mp_obj_t sock;
@ -96,6 +98,52 @@ STATIC mp_obj_t webrepl_make_new(const mp_obj_type_t *type, size_t n_args, size_
return o;
}
STATIC void handle_op(mp_obj_webrepl_t *self) {
mp_obj_t open_args[2] = {
mp_obj_new_str(self->hdr.fname, strlen(self->hdr.fname), false),
MP_OBJ_NEW_QSTR(MP_QSTR_rb)
};
if (self->hdr.type == PUT_FILE) {
open_args[1] = MP_OBJ_NEW_QSTR(MP_QSTR_wb);
}
self->cur_file = mp_builtin_open(2, open_args, (mp_map_t*)&mp_const_empty_map);
const mp_stream_p_t *file_stream =
mp_get_stream_raise(self->cur_file, MP_STREAM_OP_READ | MP_STREAM_OP_WRITE | MP_STREAM_OP_IOCTL);
#if 0
struct mp_stream_seek_t seek = { .offset = self->hdr.offset, .whence = 0 };
int err;
mp_uint_t res = file_stream->ioctl(self->cur_file, MP_STREAM_SEEK, (uintptr_t)&seek, &err);
assert(res != MP_STREAM_ERROR);
#endif
write_webrepl_resp(self->sock, 0);
if (self->hdr.type == PUT_FILE) {
self->data_to_recv = self->hdr.size;
} else if (self->hdr.type == GET_FILE) {
byte readbuf[256];
int err;
// TODO: It's not ideal that we block connection while sending file
// and don't process any input.
while (1) {
mp_uint_t out_sz = file_stream->read(self->cur_file, readbuf, sizeof(readbuf), &err);
assert(out_sz != MP_STREAM_ERROR);
write_webrepl(self->sock, &out_sz, 2);
if (out_sz == 0) {
break;
}
DEBUG_printf("webrepl: Sending %d bytes of file\n", out_sz);
write_webrepl(self->sock, readbuf, out_sz);
}
write_webrepl_resp(self->sock, 0);
self->hdr_to_recv = sizeof(struct webrepl_file);
}
}
STATIC mp_uint_t webrepl_read(mp_obj_t self_in, void *buf, mp_uint_t size, int *errcode) {
// We know that os.dupterm always calls with size = 1
assert(size == 1);
@ -130,21 +178,7 @@ STATIC mp_uint_t webrepl_read(mp_obj_t self_in, void *buf, mp_uint_t size, int *
DEBUG_printf("webrepl: op: %d, file: %s, chunk @%x, sz=%d\n", self->hdr.type, self->hdr.fname, (uint32_t)self->hdr.offset, self->hdr.size);
// Process header
mp_obj_t open_args[2] = {
mp_obj_new_str(self->hdr.fname, strlen(self->hdr.fname), false),
MP_OBJ_NEW_QSTR(MP_QSTR_wb)
};
self->cur_file = mp_builtin_open(2, open_args, (mp_map_t*)&mp_const_empty_map);
const mp_stream_p_t *file_stream = mp_get_stream_raise(self->cur_file, MP_STREAM_OP_WRITE | MP_STREAM_OP_IOCTL);
struct mp_stream_seek_t seek = { .offset = self->hdr.offset, .whence = 0 };
int err;
mp_uint_t res = file_stream->ioctl(self->cur_file, MP_STREAM_SEEK, (uintptr_t)&seek, &err);
assert(res != MP_STREAM_ERROR);
write_webrepl_resp(self->sock, 0);
self->data_to_recv = self->hdr.size;
handle_op(self);
*errcode = EAGAIN;
return MP_STREAM_ERROR;