--- lbbs/src/article_cache.c 2025/05/31 01:37:18 1.3 +++ lbbs/src/article_cache.c 2025/06/14 09:20:13 1.16 @@ -16,6 +16,7 @@ #include "article_cache.h" #include "log.h" +#include "lml.h" #include #include #include @@ -28,6 +29,20 @@ #include #define ARTICLE_HEADER_MAX_LEN 4096 +#define ARTICLE_CONTENT_MAX_LEN 1024 * 1024 * 4 // 4MB +#define ARTICLE_FOOTER_MAX_LEN 4096 +#define SUB_DT_MAX_LEN 50 + +static const char *BBS_article_footer_color[] = { + "\033[31m", + "\033[32m", + "\033[33m", + "\033[34m", + "\033[35m", + "\033[36m", + "\033[37m", +}; +static const int BBS_article_footer_color_count = 7; inline static int article_cache_path(char *file_path, size_t buf_len, const char *cache_dir, const ARTICLE *p_article) { @@ -42,16 +57,22 @@ inline static int article_cache_path(cha return 0; } -int article_cache_generate(const char *cache_dir, const ARTICLE *p_article, const SECTION_LIST *p_section, const char *content, int overwrite) +int article_cache_generate(const char *cache_dir, const ARTICLE *p_article, const SECTION_LIST *p_section, + const char *content, const char *sub_ip, int overwrite) { + static char *content_f; // static buffer in large size + char data_file[FILE_PATH_LEN]; int fd; ARTICLE_CACHE cache; struct tm tm_sub_dt; - char str_sub_dt[50]; + char str_sub_dt[SUB_DT_MAX_LEN + 1]; char header[ARTICLE_HEADER_MAX_LEN]; size_t header_len; long header_line_cnt; + char footer[ARTICLE_FOOTER_MAX_LEN]; + size_t footer_len; + long footer_line_cnt; long i; if (cache_dir == NULL || p_article == NULL || content == NULL) @@ -60,6 +81,12 @@ int article_cache_generate(const char *c return -1; } + if (content_f == NULL && (content_f = malloc(ARTICLE_CONTENT_MAX_LEN)) == NULL) + { + log_error("malloc(content_f) error: OOM\n"); + return -1; + } + if (article_cache_path(data_file, sizeof(data_file), cache_dir, p_article) < 0) { log_error("article_cache_path(dir=%s, cid=%d) error\n", cache_dir, p_article->cid); @@ -83,24 +110,40 @@ int article_cache_generate(const char *c bzero(&cache, sizeof(cache)); - // Generate article header + // Generate article header / footer localtime_r(&(p_article->sub_dt), &tm_sub_dt); strftime(str_sub_dt, sizeof(str_sub_dt), "%c", &tm_sub_dt); 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", p_article->username, p_article->nickname, p_section->sname, p_section->stitle, p_article->title, BBS_name, str_sub_dt); + snprintf(footer, sizeof(footer), + "\n--\n%s※ 来源: %s http://%s [FROM: %s]\033[m\n\n", + BBS_article_footer_color[p_article->aid % BBS_article_footer_color_count], + BBS_name, BBS_server, sub_ip); + header_len = strnlen(header, sizeof(header)); - cache.data_len = header_len + strlen(content); + footer_len = strnlen(footer, sizeof(footer)); header_line_cnt = split_data_lines(header, SCREEN_COLS, cache.line_offsets, MAX_SPLIT_FILE_LINES); + + if (header_len != cache.line_offsets[header_line_cnt]) + { + log_common("Header of article(aid=%d) is truncated from %ld to %ld\n", p_article->aid, header_len, cache.line_offsets[header_line_cnt]); + header_len = (size_t)cache.line_offsets[header_line_cnt]; + } + + // Apply LML render to content body + cache.data_len = header_len + (size_t)lml_plain(content, content_f, ARTICLE_CONTENT_MAX_LEN); + cache.line_total = header_line_cnt + - split_data_lines(content, SCREEN_COLS, cache.line_offsets + header_line_cnt, MAX_SPLIT_FILE_LINES - header_line_cnt); + split_data_lines(content_f, SCREEN_COLS, cache.line_offsets + header_line_cnt, MAX_SPLIT_FILE_LINES - header_line_cnt); - if (cache.line_total >= MAX_SPLIT_FILE_LINES) + if (cache.data_len - header_len != (size_t)cache.line_offsets[cache.line_total]) { - log_error("split_data_lines(%s) truncated over limit lines %d >= %d\n", data_file, cache.line_total, MAX_SPLIT_FILE_LINES); - cache.line_total = MAX_SPLIT_FILE_LINES - 1; + log_common("Body of article(aid=%d) is truncated from %ld to %ld\n", + p_article->aid, cache.data_len - header_len, cache.line_offsets[cache.line_total]); + cache.data_len = header_len + (size_t)(cache.line_offsets[cache.line_total]); } for (i = header_line_cnt; i <= cache.line_total; i++) @@ -108,7 +151,25 @@ int article_cache_generate(const char *c cache.line_offsets[i] += (long)header_len; } - if (write(fd, &cache, sizeof(cache)) == -1) + footer_line_cnt = split_data_lines(footer, SCREEN_COLS, cache.line_offsets + cache.line_total, MAX_SPLIT_FILE_LINES - cache.line_total); + + if (footer_len != cache.line_offsets[cache.line_total + footer_line_cnt]) + { + log_common("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]); + footer_len = (size_t)(cache.line_offsets[cache.line_total + footer_line_cnt]); + } + + for (i = 0; i <= footer_line_cnt; i++) + { + cache.line_offsets[cache.line_total + i] += (long)cache.data_len; + } + + cache.data_len += footer_len; + cache.line_total += footer_line_cnt; + cache.mmap_len = sizeof(cache) - sizeof(long) * (MAX_SPLIT_FILE_LINES - (size_t)(cache.line_total) - 1) + cache.data_len; + + if (write(fd, &cache, cache.mmap_len - cache.data_len) == -1) { log_error("write(%s, cache) error (%d)\n", data_file, errno); close(fd); @@ -120,12 +181,18 @@ int article_cache_generate(const char *c close(fd); return -3; } - if (write(fd, content, cache.data_len - header_len) == -1) + if (write(fd, content_f, cache.data_len - header_len - footer_len) == -1) { log_error("write(%s, content) error (%d)\n", data_file, errno); close(fd); return -3; } + if (write(fd, footer, footer_len) == -1) + { + log_error("write(%s, footer) error (%d)\n", data_file, errno); + close(fd); + return -3; + } if (close(fd) == -1) { @@ -140,6 +207,9 @@ int article_cache_load(ARTICLE_CACHE *p_ { char data_file[FILE_PATH_LEN]; int fd; + struct stat sb; + void *p_mmap; + size_t mmap_len; if (p_cache == NULL || cache_dir == NULL || p_article == NULL) { @@ -159,28 +229,20 @@ int article_cache_load(ARTICLE_CACHE *p_ return -2; } - if (read(fd, (void *)p_cache, sizeof(ARTICLE_CACHE)) == -1) + if (fstat(fd, &sb) < 0) { - log_error("read(%s, cache) error (%d)\n", data_file, errno); - close(fd); - return -3; + log_error("fstat(fd) error (%d)\n", errno); + return -2; } - p_cache->p_data = malloc(p_cache->data_len + 1); - if (p_cache->p_data == NULL) - { - log_error("malloc(size=%ld) error OOM\n", p_cache->data_len + 1); - close(fd); - return -1; - } + mmap_len = (size_t)sb.st_size; - if (read(fd, p_cache->p_data, p_cache->data_len) == -1) + p_mmap = mmap(NULL, mmap_len, PROT_READ, MAP_SHARED, fd, 0L); + if (p_mmap == MAP_FAILED) { - log_error("read(%s, data) error (%d)\n", data_file, errno); - close(fd); - return -3; + log_error("mmap(%s) error (%d)\n", data_file, errno); + return -2; } - p_cache->p_data[p_cache->data_len] = '\0'; if (close(fd) == -1) { @@ -188,18 +250,36 @@ int article_cache_load(ARTICLE_CACHE *p_ return -2; } + if (((ARTICLE_CACHE *)p_mmap)->mmap_len != mmap_len) + { + log_error("Inconsistent mmap len of article (cid=%d), %ld != %ld\n", p_article->cid, p_cache->mmap_len, mmap_len); + return -3; + } + + bzero(p_cache, sizeof(*p_cache)); + memcpy((void *)p_cache, p_mmap, (size_t)(((ARTICLE_CACHE *)p_mmap)->mmap_len - ((ARTICLE_CACHE *)p_mmap)->data_len)); + + p_cache->p_mmap = p_mmap; + p_cache->p_data = p_mmap + (p_cache->mmap_len - p_cache->data_len); + return 0; } int article_cache_unload(ARTICLE_CACHE *p_cache) { - if (p_cache == NULL || p_cache->p_data == NULL) + if (p_cache == NULL || p_cache->p_mmap == NULL) { log_error("article_cache_unload() NULL pointer error\n"); return -1; } - free(p_cache->p_data); + if (munmap(p_cache->p_mmap, p_cache->mmap_len) < 0) + { + log_error("munmap() error (%d)\n", errno); + return -2; + } + + p_cache->p_mmap = NULL; p_cache->p_data = NULL; return 0;