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 
14 struct 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 */
33 int init_data(struct upload_backend *be, const char *argv[]);
34 int write_data(struct upload_backend *be, const void *buf, size_t len);
35 int flush_data(struct upload_backend *be);
36 
37 /* cpio.c */
38 #define cpio_init init_data
39 int cpio_hdr(struct upload_backend *be, uint32_t mode, size_t datalen,
40 	     const char *filename);
41 int cpio_mkdir(struct upload_backend *be, const char *filename);
42 int cpio_writefile(struct upload_backend *be, const char *filename,
43 		   const void *data, size_t len);
44 int cpio_close(struct upload_backend *be);
45 #define MODE_FILE	0100644
46 #define MODE_DIR	0040755
47 
48 /* backends.c */
49 struct upload_backend *get_upload_backend(const char *name);
50 
51 /* backends */
52 extern struct upload_backend upload_tftp;
53 extern struct upload_backend upload_ymodem;
54 extern struct upload_backend upload_srec;
55 
56 #endif /* BACKEND_H */
57