1#ifndef BACKEND_H
2#define BACKEND_H
3
4#include <stddef.h>
5#include <inttypes.h>
6#include <stdbool.h>
7#include <zlib.h>
8#include "serial.h"
9#include "tftp.h"
10
11/* Backend flags */
12#define BE_NEEDLEN	0x01
13
14struct upload_backend {
15    const char *name;
16    const char *helpmsg;
17    int minargs;
18
19    size_t dbytes;
20    size_t zbytes;
21    const char **argv;
22
23    uint32_t now;
24
25    int (*write)(struct upload_backend *);
26
27    z_stream zstream;
28    char *outbuf;
29    size_t alloc;
30};
31
32/* zout.c */
33int init_data(struct upload_backend *be, const char *argv[]);
34int write_data(struct upload_backend *be, const void *buf, size_t len);
35int flush_data(struct upload_backend *be);
36
37/* cpio.c */
38#define cpio_init init_data
39int cpio_hdr(struct upload_backend *be, uint32_t mode, size_t datalen,
40	     const char *filename);
41int cpio_mkdir(struct upload_backend *be, const char *filename);
42int cpio_writefile(struct upload_backend *be, const char *filename,
43		   const void *data, size_t len);
44int cpio_close(struct upload_backend *be);
45#define MODE_FILE	0100644
46#define MODE_DIR	0040755
47
48/* backends.c */
49struct upload_backend *get_upload_backend(const char *name);
50
51/* backends */
52extern struct upload_backend upload_tftp;
53extern struct upload_backend upload_ymodem;
54extern struct upload_backend upload_srec;
55
56#endif /* BACKEND_H */
57