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#ifndef BACKEND_H
#define BACKEND_H
#include <stddef.h>
#include <inttypes.h>
#include <stdbool.h>
#include <zlib.h>
#include "serial.h"
#include "tftp.h"
/* Backend flags */
#define BE_NEEDLEN 0x01
struct upload_backend {
const char *name;
const char *helpmsg;
int minargs;
size_t dbytes;
size_t zbytes;
const char **argv;
uint32_t now;
int (*write)(struct upload_backend *);
z_stream zstream;
char *outbuf;
size_t alloc;
};
/* zout.c */
int init_data(struct upload_backend *be, const char *argv[]);
int write_data(struct upload_backend *be, const void *buf, size_t len);
int flush_data(struct upload_backend *be);
/* cpio.c */
#define cpio_init init_data
int cpio_hdr(struct upload_backend *be, uint32_t mode, size_t datalen,
const char *filename);
int cpio_mkdir(struct upload_backend *be, const char *filename);
int cpio_writefile(struct upload_backend *be, const char *filename,
const void *data, size_t len);
int cpio_close(struct upload_backend *be);
#define MODE_FILE 0100644
#define MODE_DIR 0040755
/* backends.c */
struct upload_backend *get_upload_backend(const char *name);
/* backends */
extern struct upload_backend upload_tftp;
extern struct upload_backend upload_ymodem;
extern struct upload_backend upload_srec;
#endif /* BACKEND_H */
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