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/*************************************************************************** |
/* SPDX-License-Identifier: GPL-3.0-or-later */ |
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article_cache.c - description |
/* |
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------------------- |
* article_cache |
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Copyright : (C) 2004-2025 by Leaflet |
* - convert article content from DB to local cache with LML conversion and line offset index |
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Email : leaflet@leafok.com |
* |
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***************************************************************************/ |
* Copyright (C) 2004-2026 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 "article_cache.h" |
#include "article_cache.h" |
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#include "lml.h" |
#include "lml.h" |
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#include <sys/mman.h> |
#include <sys/mman.h> |
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#include <sys/stat.h> |
#include <sys/stat.h> |
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#define ARTICLE_HEADER_MAX_LEN 4096 |
enum _article_cache_constant_t |
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#define ARTICLE_CONTENT_MAX_LEN 1024 * 1024 * 4 // 4MB |
{ |
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#define ARTICLE_FOOTER_MAX_LEN 4096 |
ARTICLE_HEADER_MAX_LEN = 4096, |
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#define SUB_DT_MAX_LEN 50 |
ARTICLE_FOOTER_MAX_LEN = 4096, |
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SUB_DT_MAX_LEN = 50, |
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}; |
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static const char *BBS_article_footer_color[] = { |
static const char *BBS_article_footer_color[] = { |
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"\033[31m", |
"\033[31m", |
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{ |
{ |
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if (file_path == NULL || cache_dir == NULL || p_article == NULL) |
if (file_path == NULL || cache_dir == NULL || p_article == NULL) |
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{ |
{ |
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log_error("NULL pointer error\n"); |
log_error("NULL pointer error"); |
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return -1; |
return -1; |
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} |
} |
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char header[ARTICLE_HEADER_MAX_LEN]; |
char header[ARTICLE_HEADER_MAX_LEN]; |
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size_t header_len; |
size_t header_len; |
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long header_line_cnt; |
long header_line_cnt; |
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size_t body_len; |
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long body_line_cnt; |
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char footer[ARTICLE_FOOTER_MAX_LEN]; |
char footer[ARTICLE_FOOTER_MAX_LEN]; |
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size_t footer_len; |
size_t footer_len; |
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long footer_line_cnt; |
long footer_line_cnt; |
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if (cache_dir == NULL || p_article == NULL || content == NULL) |
if (cache_dir == NULL || p_article == NULL || content == NULL) |
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{ |
{ |
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log_error("NULL pointer error\n"); |
log_error("NULL pointer error"); |
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return -1; |
return -1; |
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} |
} |
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if (content_f == NULL && (content_f = malloc(ARTICLE_CONTENT_MAX_LEN)) == NULL) |
if (content_f == NULL && (content_f = malloc(ARTICLE_CONTENT_MAX_LEN)) == NULL) |
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{ |
{ |
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log_error("malloc(content_f) error: OOM\n"); |
log_error("malloc(content_f) error: OOM"); |
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return -1; |
return -1; |
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} |
} |
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if (article_cache_path(data_file, sizeof(data_file), cache_dir, p_article) < 0) |
if (article_cache_path(data_file, sizeof(data_file), cache_dir, p_article) < 0) |
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{ |
{ |
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log_error("article_cache_path(dir=%s, cid=%d) error\n", cache_dir, p_article->cid); |
log_error("article_cache_path(dir=%s, cid=%d) error", cache_dir, p_article->cid); |
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return -1; |
return -1; |
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} |
} |
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if ((fd = open(data_file, O_WRONLY | O_CREAT | O_TRUNC, 0640)) == -1) |
if ((fd = open(data_file, O_WRONLY | O_CREAT | O_TRUNC, 0640)) == -1) |
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{ |
{ |
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log_error("open(%s) error (%d)\n", data_file, errno); |
log_error("open(%s) error (%d)", data_file, errno); |
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return -2; |
return -2; |
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} |
} |
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// Generate article header / footer |
// Generate article header / footer |
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localtime_r(&(p_article->sub_dt), &tm_sub_dt); |
localtime_r(&(p_article->sub_dt), &tm_sub_dt); |
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strftime(str_sub_dt, sizeof(str_sub_dt), "%c", &tm_sub_dt); |
strftime(str_sub_dt, sizeof(str_sub_dt), "%c %Z", &tm_sub_dt); |
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snprintf(header, sizeof(header), "发布者: %s (%s), 版块: %s (%s)\n标 题: %s\n发布于: %s (%s)\n\n", |
snprintf(header, sizeof(header), "发布者: %s (%s), 版块: %s (%s)\n标 题: %s\n发布于: %s (%s)\n\n", |
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p_article->username, p_article->nickname, p_section->sname, p_section->stitle, p_article->title, BBS_name, str_sub_dt); |
p_article->username, p_article->nickname, p_section->sname, p_section->stitle, p_article->title, BBS_name, str_sub_dt); |
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snprintf(footer, sizeof(footer), |
snprintf(footer, sizeof(footer), |
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"\n--\n%s※ 来源: %s http://%s [FROM: %s]\033[m\n\n", |
"\n--\n%s※ 来源: %s https://%s [FROM: %s]\033[m\n\n", |
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BBS_article_footer_color[p_article->aid % BBS_article_footer_color_count], |
BBS_article_footer_color[p_article->aid % BBS_article_footer_color_count], |
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BBS_name, BBS_server, sub_ip); |
BBS_name, BBS_server, sub_ip); |
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header_len = strnlen(header, sizeof(header)); |
header_len = strnlen(header, sizeof(header)); |
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footer_len = strnlen(footer, sizeof(footer)); |
footer_len = strnlen(footer, sizeof(footer)); |
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header_line_cnt = split_data_lines(header, SCREEN_COLS, cache.line_offsets, MAX_SPLIT_FILE_LINES, 1, NULL); |
header_line_cnt = split_data_lines(header, SCREEN_COLS, cache.line_offsets, |
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MAX_SPLIT_FILE_LINES, 1, NULL); |
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if (header_len != cache.line_offsets[header_line_cnt]) |
if (header_len != cache.line_offsets[header_line_cnt]) |
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{ |
{ |
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#ifdef _DEBUG |
log_debug("Header of article(aid=%d) is truncated from %ld to %ld\n, body_line=%ld, body_line_limit=%ld", |
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log_error("Header of article(aid=%d) is truncated from %ld to %ld\n", p_article->aid, header_len, cache.line_offsets[header_line_cnt]); |
p_article->aid, header_len, cache.line_offsets[header_line_cnt], |
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#endif |
header_line_cnt, MAX_SPLIT_FILE_LINES); |
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header_len = (size_t)cache.line_offsets[header_line_cnt]; |
header_len = (size_t)cache.line_offsets[header_line_cnt]; |
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} |
} |
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// Apply LML render to content body |
// Apply LML render to content body |
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cache.data_len = header_len + (size_t)lml_render(content, content_f, ARTICLE_CONTENT_MAX_LEN, 0); |
body_len = (size_t)lml_render(content, content_f, ARTICLE_CONTENT_MAX_LEN, SCREEN_COLS, 0); |
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cache.data_len = header_len + body_len; |
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cache.line_total = header_line_cnt + |
body_line_cnt = split_data_lines(content_f, SCREEN_COLS + 1, &(cache.line_offsets[header_line_cnt]), |
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split_data_lines(content_f, SCREEN_COLS, cache.line_offsets + header_line_cnt, MAX_SPLIT_FILE_LINES - header_line_cnt, 1, NULL); |
MAX_SPLIT_FILE_LINES - header_line_cnt, 1, NULL); |
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cache.line_total = header_line_cnt + body_line_cnt; |
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if (cache.data_len - header_len != (size_t)cache.line_offsets[cache.line_total]) |
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{ |
if (body_len != (size_t)cache.line_offsets[cache.line_total]) |
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#ifdef _DEBUG |
{ |
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log_error("Body of article(aid=%d) is truncated from %ld to %ld\n", |
log_debug("Body of article(aid=%d) is truncated from %ld to %ld, body_line=%ld, body_line_limit=%ld", |
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p_article->aid, cache.data_len - header_len, cache.line_offsets[cache.line_total]); |
p_article->aid, body_len, cache.line_offsets[cache.line_total], |
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#endif |
body_line_cnt, MAX_SPLIT_FILE_LINES - header_line_cnt); |
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cache.data_len = header_len + (size_t)(cache.line_offsets[cache.line_total]); |
cache.data_len = header_len + (size_t)(cache.line_offsets[cache.line_total]); |
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} |
} |
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cache.line_offsets[i] += (long)header_len; |
cache.line_offsets[i] += (long)header_len; |
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} |
} |
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footer_line_cnt = split_data_lines(footer, SCREEN_COLS, cache.line_offsets + cache.line_total, MAX_SPLIT_FILE_LINES - cache.line_total, 1, NULL); |
footer_line_cnt = split_data_lines(footer, SCREEN_COLS, &(cache.line_offsets[cache.line_total]), |
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MAX_SPLIT_FILE_LINES - cache.line_total, 1, NULL); |
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if (footer_len != cache.line_offsets[cache.line_total + footer_line_cnt]) |
if (footer_len != cache.line_offsets[cache.line_total + footer_line_cnt]) |
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{ |
{ |
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#ifdef _DEBUG |
log_debug("Footer of article(aid=%d) is truncated from %ld to %ld, footer_line=%ld, footer_line_limit=%ld", |
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log_error("Footer of article(aid=%d) is truncated from %ld to %ld\n", |
p_article->aid, footer_len, cache.line_offsets[cache.line_total + footer_line_cnt], |
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p_article->aid, footer_len, cache.line_offsets[cache.line_total + footer_line_cnt]); |
footer_line_cnt, MAX_SPLIT_FILE_LINES - cache.line_total); |
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#endif |
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footer_len = (size_t)(cache.line_offsets[cache.line_total + footer_line_cnt]); |
footer_len = (size_t)(cache.line_offsets[cache.line_total + footer_line_cnt]); |
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} |
} |
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if (write(fd, &cache, cache.mmap_len - cache.data_len) == -1) |
if (write(fd, &cache, cache.mmap_len - cache.data_len) == -1) |
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{ |
{ |
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log_error("write(%s, cache) error (%d)\n", data_file, errno); |
log_error("write(%s, cache) error (%d)", data_file, errno); |
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close(fd); |
close(fd); |
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return -3; |
return -3; |
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} |
} |
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if (write(fd, header, header_len) == -1) |
if (write(fd, header, header_len) == -1) |
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{ |
{ |
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log_error("write(%s, header) error (%d)\n", data_file, errno); |
log_error("write(%s, header) error (%d)", data_file, errno); |
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close(fd); |
close(fd); |
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return -3; |
return -3; |
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} |
} |
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if (write(fd, content_f, cache.data_len - header_len - footer_len) == -1) |
if (write(fd, content_f, cache.data_len - header_len - footer_len) == -1) |
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{ |
{ |
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log_error("write(%s, content) error (%d)\n", data_file, errno); |
log_error("write(%s, content) error (%d)", data_file, errno); |
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close(fd); |
close(fd); |
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return -3; |
return -3; |
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} |
} |
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if (write(fd, footer, footer_len) == -1) |
if (write(fd, footer, footer_len) == -1) |
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{ |
{ |
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log_error("write(%s, footer) error (%d)\n", data_file, errno); |
log_error("write(%s, footer) error (%d)", data_file, errno); |
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close(fd); |
close(fd); |
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return -3; |
return -3; |
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} |
} |
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if (close(fd) == -1) |
if (close(fd) == -1) |
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{ |
{ |
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log_error("close(%s) error (%d)\n", data_file, errno); |
log_error("close(%s) error (%d)", data_file, errno); |
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return -2; |
return -2; |
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} |
} |
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if (p_cache == NULL || cache_dir == NULL || p_article == NULL) |
if (p_cache == NULL || cache_dir == NULL || p_article == NULL) |
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{ |
{ |
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log_error("NULL pointer error\n"); |
log_error("NULL pointer error"); |
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return -1; |
return -1; |
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} |
} |
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if (article_cache_path(data_file, sizeof(data_file), cache_dir, p_article) < 0) |
if (article_cache_path(data_file, sizeof(data_file), cache_dir, p_article) < 0) |
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{ |
{ |
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log_error("article_cache_path(dir=%s, cid=%d) error\n", cache_dir, p_article->cid); |
log_error("article_cache_path(dir=%s, cid=%d) error", cache_dir, p_article->cid); |
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return -1; |
return -1; |
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} |
} |
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if ((fd = open(data_file, O_RDONLY)) == -1) |
if ((fd = open(data_file, O_RDONLY)) == -1) |
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{ |
{ |
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log_error("open(%s) error (%d)\n", data_file, errno); |
log_error("open(%s) error (%d)", data_file, errno); |
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return -2; |
return -2; |
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} |
} |
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if (fstat(fd, &sb) < 0) |
if (fstat(fd, &sb) < 0) |
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{ |
{ |
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log_error("fstat(fd) error (%d)\n", errno); |
log_error("fstat(fd) error (%d)", errno); |
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return -2; |
return -2; |
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} |
} |
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p_mmap = mmap(NULL, mmap_len, PROT_READ, MAP_SHARED, fd, 0L); |
p_mmap = mmap(NULL, mmap_len, PROT_READ, MAP_SHARED, fd, 0L); |
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if (p_mmap == MAP_FAILED) |
if (p_mmap == MAP_FAILED) |
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{ |
{ |
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log_error("mmap(%s) error (%d)\n", data_file, errno); |
log_error("mmap(%s) error (%d)", data_file, errno); |
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return -2; |
return -2; |
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} |
} |
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if (close(fd) == -1) |
if (close(fd) == -1) |
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{ |
{ |
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log_error("close(%s) error (%d)\n", data_file, errno); |
log_error("close(%s) error (%d)", data_file, errno); |
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return -2; |
return -2; |
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} |
} |
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if (((ARTICLE_CACHE *)p_mmap)->mmap_len != mmap_len) |
if (((ARTICLE_CACHE *)p_mmap)->mmap_len != mmap_len) |
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{ |
{ |
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log_error("Inconsistent mmap len of article (cid=%d), %ld != %ld\n", p_article->cid, p_cache->mmap_len, mmap_len); |
log_error("Inconsistent mmap len of article (cid=%d), %ld != %ld", p_article->cid, p_cache->mmap_len, mmap_len); |
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return -3; |
return -3; |
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} |
} |
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{ |
{ |
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if (p_cache == NULL || p_cache->p_mmap == NULL) |
if (p_cache == NULL || p_cache->p_mmap == NULL) |
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{ |
{ |
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log_error("NULL pointer error\n"); |
log_error("NULL pointer error"); |
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return -1; |
return -1; |
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} |
} |
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if (munmap(p_cache->p_mmap, p_cache->mmap_len) < 0) |
if (munmap(p_cache->p_mmap, p_cache->mmap_len) < 0) |
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{ |
{ |
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log_error("munmap() error (%d)\n", errno); |
log_error("munmap() error (%d)", errno); |
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return -2; |
return -2; |
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} |
} |
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