| 1 |
/*************************************************************************** |
/* SPDX-License-Identifier: GPL-3.0-or-later */ |
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bbs_net.c - description |
/* |
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------------------- |
* bbs_net |
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Copyright : (C) 2004-2025 by Leaflet |
* - user interactive feature of site shuttle |
| 5 |
Email : leaflet@leafok.com |
* |
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***************************************************************************/ |
* Copyright (C) 2004-2025 Leaflet <leaflet@leafok.com> |
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*/ |
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/*************************************************************************** |
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* * |
#ifdef HAVE_CONFIG_H |
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* This program is free software; you can redistribute it and/or modify * |
#include "config.h" |
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* it under the terms of the GNU General Public License as published by * |
#endif |
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* the Free Software Foundation; either version 3 of the License, or * |
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* (at your option) any later version. * |
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* * |
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***************************************************************************/ |
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#include "bbs.h" |
#include "bbs.h" |
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#include "common.h" |
#include "common.h" |
| 27 |
#include <time.h> |
#include <time.h> |
| 28 |
#include <unistd.h> |
#include <unistd.h> |
| 29 |
#include <arpa/inet.h> |
#include <arpa/inet.h> |
|
#include <iconv.h> |
|
| 30 |
#include <libssh/libssh.h> |
#include <libssh/libssh.h> |
| 31 |
#include <libssh/server.h> |
#include <libssh/server.h> |
| 32 |
#include <libssh/callbacks.h> |
#include <libssh/callbacks.h> |
| 37 |
#include <sys/socket.h> |
#include <sys/socket.h> |
| 38 |
#include <sys/epoll.h> |
#include <sys/epoll.h> |
| 39 |
|
|
| 40 |
#define MENU_CONF_DELIM " \t\r\n" |
static const char MENU_CONF_DELIM[] = " \t\r\n"; |
| 41 |
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|
| 42 |
#define MAX_PROCESS_BAR_LEN 30 |
enum _bbs_net_constant_t |
| 43 |
#define MAXSTATION 26 * 2 |
{ |
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#define STATION_PER_LINE 4 |
MAX_PROCESS_BAR_LEN = 30, |
| 45 |
|
MAXSTATION = 26 * 2, |
| 46 |
#define BBS_NET_DEFAULT_CHARSET "UTF-8" |
STATION_PER_LINE = 4, |
| 47 |
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}; |
| 48 |
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|
| 49 |
struct _bbsnet_conf |
struct _bbsnet_conf |
| 50 |
{ |
{ |
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char host2[40]; |
char host2[40]; |
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char ip[40]; |
char ip[40]; |
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in_port_t port; |
in_port_t port; |
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char charset[20]; |
char charset[CHARSET_MAX_LEN + 1]; |
| 56 |
} bbsnet_conf[MAXSTATION]; |
} bbsnet_conf[MAXSTATION]; |
| 57 |
|
|
| 58 |
MENU_SET bbsnet_menu; |
static MENU_SET bbsnet_menu; |
| 59 |
|
|
| 60 |
int load_bbsnet_conf(const char *file_config) |
static int load_bbsnet_conf(const char *file_config) |
| 61 |
{ |
{ |
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FILE *fp; |
FILE *fp; |
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MENU *p_menu; |
MENU *p_menu; |
| 152 |
return 0; |
return 0; |
| 153 |
} |
} |
| 154 |
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|
| 155 |
void unload_bbsnet_conf(void) |
static void unload_bbsnet_conf(void) |
| 156 |
{ |
{ |
| 157 |
bbsnet_menu.menu_count = 0; |
bbsnet_menu.menu_count = 0; |
| 158 |
bbsnet_menu.menu_item_count = 0; |
bbsnet_menu.menu_item_count = 0; |
| 163 |
bbsnet_menu.p_menu_item_pool = NULL; |
bbsnet_menu.p_menu_item_pool = NULL; |
| 164 |
} |
} |
| 165 |
|
|
| 166 |
void process_bar(int n, int len) |
static void process_bar(int n, int len) |
| 167 |
{ |
{ |
| 168 |
char buf[LINE_BUFFER_LEN]; |
char buf[LINE_BUFFER_LEN]; |
| 169 |
char buf2[LINE_BUFFER_LEN]; |
char buf2[LINE_BUFFER_LEN]; |
| 184 |
moveto(4, 0); |
moveto(4, 0); |
| 185 |
prints(" ------------------------------ \r\n"); |
prints(" ------------------------------ \r\n"); |
| 186 |
snprintf(buf, sizeof(buf), " %3d%% ", n * 100 / len); |
snprintf(buf, sizeof(buf), " %3d%% ", n * 100 / len); |
| 187 |
strncpy(buf2, buf, (size_t)n); |
memcpy(buf2, buf, (size_t)n); |
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buf2[n] = '\0'; |
buf2[n] = '\0'; |
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prints("|\033[46m%s\033[44m%s\033[m|\r\n", buf2, buf + n); |
prints("|\033[46m%s\033[44m%s\033[m|\r\n", buf2, buf + n); |
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prints(" ------------------------------ \r\n"); |
prints(" ------------------------------ \r\n"); |
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iflush(); |
iflush(); |
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} |
} |
| 193 |
|
|
| 194 |
int bbsnet_io_buf_conv(iconv_t cd, char *p_buf, int *p_buf_len, int *p_buf_offset, char *p_conv, size_t conv_size, int *p_conv_len) |
static int bbsnet_connect(int n) |
|
{ |
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char *in_buf; |
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char *out_buf; |
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size_t in_bytes; |
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size_t out_bytes; |
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int ret; |
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in_buf = p_buf + *p_buf_offset; |
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in_bytes = (size_t)(*p_buf_len - *p_buf_offset); |
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out_buf = p_conv + *p_conv_len; |
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out_bytes = conv_size - (size_t)(*p_conv_len); |
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while (in_bytes > 0) |
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{ |
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ret = (int)iconv(cd, &in_buf, &in_bytes, &out_buf, &out_bytes); |
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if (ret == -1) |
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{ |
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if (errno == EINVAL) // Incomplete |
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{ |
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#ifdef _DEBUG |
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log_error("iconv(inbytes=%d, outbytes=%d) error: EINVAL\n", in_bytes, out_bytes); |
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#endif |
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*p_buf_len = (int)(p_buf + *p_buf_len - in_buf); |
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*p_buf_offset = 0; |
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*p_conv_len = (int)(conv_size - out_bytes); |
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memmove(p_buf, in_buf, (size_t)(*p_buf_len)); |
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break; |
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} |
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else if (errno == E2BIG) |
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{ |
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log_error("iconv(inbytes=%d, outbytes=%d) error: E2BIG\n", in_bytes, out_bytes); |
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return -1; |
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} |
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else if (errno == EILSEQ) |
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{ |
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if (in_bytes > out_bytes || out_bytes <= 0) |
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{ |
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log_error("iconv(inbytes=%d, outbytes=%d) error: EILSEQ and E2BIG\n", in_bytes, out_bytes); |
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return -2; |
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} |
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*out_buf = *in_buf; |
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in_buf++; |
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out_buf++; |
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in_bytes--; |
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out_bytes--; |
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continue; |
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} |
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} |
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else |
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{ |
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*p_buf_len = 0; |
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*p_buf_offset = 0; |
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*p_conv_len = (int)(conv_size - out_bytes); |
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break; |
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} |
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} |
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return 0; |
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} |
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int bbsnet_connect(int n) |
|
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{ |
{ |
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int sock, ret, loop, error; |
int sock, ret, loop, error; |
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int sock_connected = 0; |
int sock_connected = 0; |
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int output_buf_len = 0; |
int output_buf_len = 0; |
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int input_buf_offset = 0; |
int input_buf_offset = 0; |
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int output_buf_offset = 0; |
int output_buf_offset = 0; |
|
iconv_t input_cd = NULL; |
|
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char input_conv[LINE_BUFFER_LEN * 2]; |
char input_conv[LINE_BUFFER_LEN * 2]; |
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char output_conv[LINE_BUFFER_LEN * 2]; |
char output_conv[LINE_BUFFER_LEN * 2]; |
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int input_conv_len = 0; |
int input_conv_len = 0; |
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int output_conv_len = 0; |
int output_conv_len = 0; |
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int input_conv_offset = 0; |
int input_conv_offset = 0; |
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int output_conv_offset = 0; |
int output_conv_offset = 0; |
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iconv_t input_cd = NULL; |
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iconv_t output_cd = NULL; |
iconv_t output_cd = NULL; |
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char tocode[32]; |
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struct epoll_event ev, events[MAX_EVENTS]; |
struct epoll_event ev, events[MAX_EVENTS]; |
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int nfds, epollfd; |
int nfds, epollfd; |
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int stdin_read_wait = 0; |
int stdin_read_wait = 0; |
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log_common("BBSNET connect to %s:%d from %s:%d by [%s]\n", |
log_common("BBSNET connect to %s:%d from %s:%d by [%s]\n", |
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remote_addr, remote_port, local_addr, local_port, BBS_username); |
remote_addr, remote_port, local_addr, local_port, BBS_username); |
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input_cd = iconv_open(bbsnet_conf[n].charset, BBS_NET_DEFAULT_CHARSET); |
snprintf(tocode, sizeof(tocode), "%s%s", bbsnet_conf[n].charset, |
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(strcasecmp(stdio_charset, bbsnet_conf[n].charset) == 0 ? "" : "//IGNORE")); |
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|
input_cd = iconv_open(tocode, stdio_charset); |
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if (input_cd == (iconv_t)(-1)) |
if (input_cd == (iconv_t)(-1)) |
| 430 |
{ |
{ |
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log_error("iconv_open(%s->%s) error: %d\n", BBS_NET_DEFAULT_CHARSET, bbsnet_conf[n].charset, errno); |
log_error("iconv_open(%s->%s) error: %d\n", stdio_charset, tocode, errno); |
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goto cleanup; |
goto cleanup; |
| 433 |
} |
} |
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output_cd = iconv_open(BBS_NET_DEFAULT_CHARSET, bbsnet_conf[n].charset); |
|
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if (input_cd == (iconv_t)(-1)) |
snprintf(tocode, sizeof(tocode), "%s%s", stdio_charset, |
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(strcasecmp(bbsnet_conf[n].charset, stdio_charset) == 0 ? "" : "//TRANSLIT")); |
| 437 |
|
output_cd = iconv_open(tocode, bbsnet_conf[n].charset); |
| 438 |
|
if (output_cd == (iconv_t)(-1)) |
| 439 |
{ |
{ |
| 440 |
log_error("iconv_open(%s->%s) error: %d\n", bbsnet_conf[n].charset, BBS_NET_DEFAULT_CHARSET, errno); |
log_error("iconv_open(%s->%s) error: %d\n", bbsnet_conf[n].charset, tocode, errno); |
| 441 |
iconv_close(input_cd); |
iconv_close(input_cd); |
| 442 |
goto cleanup; |
goto cleanup; |
| 443 |
} |
} |
| 483 |
} |
} |
| 484 |
else if (nfds == 0) // timeout |
else if (nfds == 0) // timeout |
| 485 |
{ |
{ |
| 486 |
if (time(NULL) - BBS_last_access_tm >= MAX_DELAY_TIME) |
if (time(NULL) - BBS_last_access_tm >= BBS_max_user_idle_time) |
| 487 |
{ |
{ |
| 488 |
break; |
break; |
| 489 |
} |
} |
| 535 |
} |
} |
| 536 |
else if (ret == 0) |
else if (ret == 0) |
| 537 |
{ |
{ |
| 538 |
|
// Send NO-OP to remote server |
| 539 |
|
input_buf[input_buf_len] = '\0'; |
| 540 |
|
input_buf_len++; |
| 541 |
|
BBS_last_access_tm = time(NULL); |
| 542 |
|
|
| 543 |
stdin_read_wait = 0; |
stdin_read_wait = 0; |
| 544 |
break; // Check whether channel is still open |
break; // Check whether channel is still open |
| 545 |
} |
} |
| 595 |
{ |
{ |
| 596 |
if (input_buf_offset < input_buf_len) |
if (input_buf_offset < input_buf_len) |
| 597 |
{ |
{ |
| 598 |
ret = bbsnet_io_buf_conv(input_cd, input_buf, &input_buf_len, &input_buf_offset, input_conv, sizeof(input_conv), &input_conv_len); |
// For debug |
| 599 |
|
#ifdef _DEBUG |
| 600 |
|
for (int j = input_buf_offset; j < input_buf_len; j++) |
| 601 |
|
{ |
| 602 |
|
log_error("Debug input: <--[%u]\n", (input_buf[j] + 256) % 256); |
| 603 |
|
} |
| 604 |
|
#endif |
| 605 |
|
|
| 606 |
|
ret = io_buf_conv(input_cd, input_buf, &input_buf_len, &input_buf_offset, input_conv, sizeof(input_conv), &input_conv_len); |
| 607 |
if (ret < 0) |
if (ret < 0) |
| 608 |
{ |
{ |
| 609 |
log_error("bbsnet_io_buf_conv(input, %d, %d, %d) error\n", input_buf_len, input_buf_offset, input_conv_len); |
log_error("io_buf_conv(input, %d, %d, %d) error\n", input_buf_len, input_buf_offset, input_conv_len); |
| 610 |
|
input_buf_len = input_buf_offset; // Discard invalid sequence |
| 611 |
|
} |
| 612 |
|
|
| 613 |
|
// For debug |
| 614 |
|
#ifdef _DEBUG |
| 615 |
|
for (int j = input_conv_offset; j < input_conv_len; j++) |
| 616 |
|
{ |
| 617 |
|
log_error("Debug input_conv: <--[%u]\n", (input_conv[j] + 256) % 256); |
| 618 |
} |
} |
| 619 |
|
#endif |
| 620 |
} |
} |
| 621 |
|
|
| 622 |
while (input_conv_offset < input_conv_len && !SYS_server_exit) |
while (input_conv_offset < input_conv_len && !SYS_server_exit) |
| 707 |
{ |
{ |
| 708 |
if (output_buf_offset < output_buf_len) |
if (output_buf_offset < output_buf_len) |
| 709 |
{ |
{ |
| 710 |
ret = bbsnet_io_buf_conv(output_cd, output_buf, &output_buf_len, &output_buf_offset, output_conv, sizeof(output_conv), &output_conv_len); |
ret = io_buf_conv(output_cd, output_buf, &output_buf_len, &output_buf_offset, output_conv, sizeof(output_conv), &output_conv_len); |
| 711 |
if (ret < 0) |
if (ret < 0) |
| 712 |
{ |
{ |
| 713 |
log_error("bbsnet_io_buf_conv(output, %d, %d, %d) error\n", output_buf_len, output_buf_offset, output_conv_len); |
log_error("io_buf_conv(output, %d, %d, %d) error\n", output_buf_len, output_buf_offset, output_conv_len); |
| 714 |
|
output_buf_len = output_buf_offset; // Discard invalid sequence |
| 715 |
} |
} |
| 716 |
} |
} |
| 717 |
|
|
| 801 |
tm_used->tm_mday - 1, tm_used->tm_hour, tm_used->tm_min, |
tm_used->tm_mday - 1, tm_used->tm_hour, tm_used->tm_min, |
| 802 |
tm_used->tm_sec); |
tm_used->tm_sec); |
| 803 |
|
|
| 804 |
|
BBS_last_access_tm = time(NULL); |
| 805 |
|
|
| 806 |
return 0; |
return 0; |
| 807 |
} |
} |
| 808 |
|
|
| 809 |
static int |
static int bbsnet_refresh() |
|
bbsnet_refresh() |
|
| 810 |
{ |
{ |
| 811 |
clearscr(); |
clearscr(); |
| 812 |
moveto(1, 0); |
moveto(1, 0); |
| 830 |
return 0; |
return 0; |
| 831 |
} |
} |
| 832 |
|
|
| 833 |
int bbsnet_selchange() |
static int bbsnet_selchange() |
| 834 |
{ |
{ |
| 835 |
int i = bbsnet_menu.menu_item_pos[0]; |
int i = bbsnet_menu.menu_item_pos[0]; |
| 836 |
|
|
| 855 |
return 0; |
return 0; |
| 856 |
} |
} |
| 857 |
|
|
| 858 |
int bbs_net() |
extern int bbs_net() |
| 859 |
{ |
{ |
| 860 |
int ch, i; |
int ch, i; |
| 861 |
|
|
| 870 |
{ |
{ |
| 871 |
ch = igetch(100); |
ch = igetch(100); |
| 872 |
|
|
| 873 |
if (ch != KEY_NULL && ch != KEY_TIMEOUT) |
if (ch != KEY_NULL && ch != KEY_TIMEOUT) |
| 874 |
{ |
{ |
| 875 |
BBS_last_access_tm = time(NULL); |
BBS_last_access_tm = time(NULL); |
| 876 |
} |
} |
| 877 |
|
|
| 878 |
switch (ch) |
switch (ch) |
| 879 |
{ |
{ |
| 881 |
log_error("KEY_NULL\n"); |
log_error("KEY_NULL\n"); |
| 882 |
goto cleanup; |
goto cleanup; |
| 883 |
case KEY_TIMEOUT: |
case KEY_TIMEOUT: |
| 884 |
if (time(NULL) - BBS_last_access_tm >= MAX_DELAY_TIME) |
if (time(NULL) - BBS_last_access_tm >= BBS_max_user_idle_time) |
| 885 |
{ |
{ |
| 886 |
log_error("User input timeout\n"); |
log_error("User input timeout\n"); |
| 887 |
goto cleanup; |
goto cleanup; |