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/* -*- c-basic-offset:2; tab-width:2; indent-tabs-mode:nil -*- */
#ifndef NO_ZMODEM
#include <stdio.h>
#include <pobl/bl_dlfcn.h>
#include <pobl/bl_str.h>
#include <pobl/bl_debug.h>
#include <pobl/bl_mem.h>
#include <pobl/bl_file.h>
#include "zmodem.h"
#ifndef LIBDIR
#define TRANSFERLIB_DIR "/usr/local/lib/mlterm/"
#else
#define TRANSFERLIB_DIR LIBDIR "/mlterm/"
#endif
/* --- static variables --- */
static int zmodem_mode;
static struct file_info zmodem_info[2];
static void (*dl_zmodem)(unsigned char *, const unsigned int, unsigned char *, unsigned int *,
const unsigned int);
static Q_BOOL (*dl_zmodem_start)(struct file_info *, const char *, const Q_BOOL,
const ZMODEM_FLAVOR, int);
static void (*dl_zmodem_cancel)(void);
static Q_BOOL (*dl_zmodem_is_processing)(int *, int *);
static int is_tried;
#ifndef NO_DYNAMIC_LOAD_TRANSFER
static bl_dl_handle_t handle;
#endif
static int progress_prev = -1;
/* --- static functions --- */
static int load_library(void) {
is_tried = 1;
#ifndef NO_DYNAMIC_LOAD_TRANSFER
if (!(handle = bl_dl_open(TRANSFERLIB_DIR, "zmodem")) && !(handle = bl_dl_open("", "zmodem"))) {
bl_error_printf("ZMODEM: Could not load.\n");
return 0;
}
bl_dl_close_at_exit(handle);
dl_zmodem = bl_dl_func_symbol(handle, "zmodem");
dl_zmodem_start = bl_dl_func_symbol(handle, "zmodem_start");
dl_zmodem_cancel = bl_dl_func_symbol(handle, "zmodem_cancel");
dl_zmodem_is_processing = bl_dl_func_symbol(handle, "zmodem_is_processing");
#else
dl_zmodem = zmodem;
dl_zmodem_start = zmodem_start;
dl_zmodem_cancel = zmodem_cancel;
dl_zmodem_is_processing = zmodem_is_processing;
#endif
return 1;
}
static void reset(void) {
zmodem_mode = 0;
free(zmodem_info[0].name);
zmodem_info[0].name = NULL;
progress_prev = -1;
}
/* --- global functions --- */
int vt_transfer_start(/* vt_transfer_type_t type, */
char *send_file /* allocated by the caller */,
const char *save_dir, int is_crc32, int progress_len) {
Q_BOOL ret;
if (zmodem_mode || (is_tried ? (dl_zmodem_start == NULL) : !load_library())) {
return 0;
}
if (send_file) {
zmodem_info[0].name = send_file;
stat(send_file, &zmodem_info[0].fstats);
ret = (*dl_zmodem_start)(zmodem_info, save_dir, Q_TRUE, is_crc32 ? Z_CRC32 : Z_CRC16,
progress_len);
} else {
char *p;
size_t len = strlen(save_dir);
if ((p = alloca(len + 2))) {
memcpy(p, save_dir, len);
strcpy(p + len, "/");
bl_mkdir_for_file(p, 0700);
}
ret = (*dl_zmodem_start)(NULL, save_dir, Q_FALSE, is_crc32 ? Z_CRC32 : Z_CRC16, progress_len);
}
if (ret) {
zmodem_mode = 1;
return 1;
} else {
free(zmodem_info[0].name);
zmodem_info[0].name = NULL;
return 0;
}
}
void vt_transfer_cancel(void) {
(*dl_zmodem_cancel)();
reset();
}
void vt_transfer_data(u_char *input, const u_int input_n, u_char *output, u_int *output_n,
const u_int output_max) {
#if 0
if (input_n > 0) {
FILE *fp = fopen("zmodem.log", "a");
u_int i;
fprintf(fp, "INPUT %d\n", input_n);
for (i = 0; i < input_n; i++) {
fprintf(fp, "%c", input[i]);
}
fprintf(fp, "\n");
fclose(fp);
}
#endif
(*dl_zmodem)(input, input_n, output, output_n, output_max);
#if 0
if (*output_n > 0) {
FILE *fp = fopen("zmodem.log", "a");
u_int i;
fprintf(fp, "OUTPUT %d\n", *output_n);
for (i = 0; i < *output_n; i++) {
fprintf(fp, "%c", output[i]);
}
fprintf(fp, "\n");
fclose(fp);
}
#endif
}
int vt_transfer_get_state(int *progress_cur, int *progress_len) {
if ((*dl_zmodem_is_processing)(progress_cur, progress_len)) {
if (progress_prev < *progress_cur) {
progress_prev = *progress_cur;
return 1;
} else {
return -1;
}
} else {
reset();
return 0;
}
}
#endif
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