--- lbbs/src/article_post.c	2025/06/12 12:14:28	1.1
+++ lbbs/src/article_post.c	2025/10/10 12:19:41	1.31
@@ -14,16 +14,1279 @@
  *                                                                         *
  ***************************************************************************/
 
-#include "article_post.h"
 #include "article_cache.h"
+#include "article_post.h"
+#include "bbs.h"
+#include "database.h"
 #include "editor.h"
-#include "screen.h"
+#include "io.h"
 #include "log.h"
+#include "lml.h"
+#include "screen.h"
+#include "user_priv.h"
+#include <ctype.h>
+#include <string.h>
+#include <stdlib.h>
+#include <time.h>
+
+#define TITLE_INPUT_MAX_LEN 72
+#define ARTICLE_CONTENT_MAX_LEN 1024 * 1024 * 4 // 4MB
+#define ARTICLE_QUOTE_MAX_LINES 20
+#define ARTICLE_QUOTE_LINE_MAX_LEN 76
+
+#define MODIFY_DT_MAX_LEN 50
+
+int article_post(const SECTION_LIST *p_section, ARTICLE *p_article_new)
+{
+	MYSQL *db = NULL;
+	MYSQL_RES *rs = NULL;
+	MYSQL_ROW row;
+	char sql[SQL_BUFFER_LEN];
+	char *sql_content = NULL;
+	EDITOR_DATA *p_editor_data = NULL;
+	char title_input[BBS_article_title_max_len + 1];
+	char title_f[BBS_article_title_max_len * 2 + 1];
+	char *content = NULL;
+	char *content_f = NULL;
+	long len_content;
+	int content_display_length;
+	char nickname_f[BBS_nickname_max_len * 2 + 1];
+	int sign_id = 0;
+	int reply_note = 1;
+	long len;
+	int ch;
+	char *p, *q;
+	long ret = 0;
+
+	if (p_section == NULL || p_article_new == NULL)
+	{
+		log_error("NULL pointer error\n");
+	}
+
+	if (!checkpriv(&BBS_priv, p_section->sid, S_POST))
+	{
+		clearscr();
+		moveto(1, 1);
+		prints("您没有权限在本版块发表文章\n");
+		press_any_key();
+
+		return 0;
+	}
+
+	p_article_new->title[0] = '\0';
+	title_input[0] = '\0';
+	p_article_new->transship = 0;
+
+	p_editor_data = editor_data_load("");
+	if (p_editor_data == NULL)
+	{
+		log_error("editor_data_load() error\n");
+		ret = -1;
+		goto cleanup;
+	}
+
+	// Set title and sign
+	for (ch = 'T'; !SYS_server_exit;)
+	{
+		clearscr();
+		moveto(21, 1);
+		prints("发表文章于 %s[%s] 讨论区，类型: %s，通知：%s",
+			   p_section->stitle, p_section->sname,
+			   (p_article_new->transship ? "转载" : "原创"),
+			   (reply_note ? "开启" : "关闭"));
+		moveto(22, 1);
+		prints("标题: %s", (p_article_new->title[0] == '\0' ? "[无]" : p_article_new->title));
+		moveto(23, 1);
+		prints("使用第 %d 个签名", sign_id);
+
+		if (toupper(ch) != 'T')
+		{
+			prints("    按0~3选签名档(0表示不使用)");
+
+			moveto(24, 1);
+			prints("T改标题, C取消, Z设为%s, N%s, Enter继续: ",
+				   (p_article_new->transship ? "原创" : "转载"),
+				   (reply_note ? "通知关闭" : "通知开启"));
+			iflush();
+			ch = 0;
+		}
+
+		for (; !SYS_server_exit; ch = igetch_t(MAX_DELAY_TIME))
+		{
+			switch (toupper(ch))
+			{
+			case KEY_NULL:
+			case KEY_TIMEOUT:
+				goto cleanup;
+			case CR:
+				igetch_reset();
+				break;
+			case 'T':
+				len = get_data(24, 1, "标题: ", title_input, sizeof(title_input), TITLE_INPUT_MAX_LEN);
+				for (p = title_input; *p == ' '; p++)
+					;
+				for (q = title_input + len; q > p && *(q - 1) == ' '; q--)
+					;
+				*q = '\0';
+				len = q - p;
+				if (*p != '\0')
+				{
+					memcpy(p_article_new->title, p, (size_t)len + 1);
+					memcpy(title_input, p_article_new->title, (size_t)len + 1);
+				}
+				ch = 0;
+				break;
+			case 'C':
+				clearscr();
+				moveto(1, 1);
+				prints("取消...");
+				press_any_key();
+				goto cleanup;
+			case 'Z':
+				p_article_new->transship = (p_article_new->transship ? 0 : 1);
+				break;
+			case 'N':
+				reply_note = (reply_note ? 0 : 1);
+				break;
+			case '0':
+			case '1':
+			case '2':
+			case '3':
+				sign_id = ch - '0';
+				break;
+			default: // Invalid selection
+				continue;
+			}
+
+			break;
+		}
+
+		if (ch != CR || p_article_new->title[0] == '\0')
+		{
+			continue;
+		}
+
+		for (ch = 'E'; !SYS_server_exit && toupper(ch) == 'E';)
+		{
+			editor_display(p_editor_data);
+
+			clearscr();
+			moveto(1, 1);
+			prints("(S)发送, (C)取消, (T)更改标题 or (E)再编辑? [S]: ");
+			iflush();
+
+			for (ch = 0; !SYS_server_exit; ch = igetch_t(MAX_DELAY_TIME))
+			{
+				switch (toupper(ch))
+				{
+				case KEY_NULL:
+				case KEY_TIMEOUT:
+					goto cleanup;
+				case CR:
+					igetch_reset();
+				case 'S':
+					break;
+				case 'C':
+					clearscr();
+					moveto(1, 1);
+					prints("取消...");
+					press_any_key();
+					goto cleanup;
+				case 'T':
+					break;
+				case 'E':
+					break;
+				default: // Invalid selection
+					continue;
+				}
+
+				break;
+			}
+		}
+
+		if (toupper(ch) != 'T')
+		{
+			break;
+		}
+	}
+
+	if (SYS_server_exit) // Do not save data on shutdown
+	{
+		goto cleanup;
+	}
+
+	content = malloc(ARTICLE_CONTENT_MAX_LEN);
+	if (content == NULL)
+	{
+		log_error("malloc(content) error: OOM\n");
+		ret = -1;
+		goto cleanup;
+	}
+
+	len_content = editor_data_save(p_editor_data, content, ARTICLE_CONTENT_MAX_LEN);
+	if (len_content < 0)
+	{
+		log_error("editor_data_save() error\n");
+		ret = -1;
+		goto cleanup;
+	}
+
+	db = db_open();
+	if (db == NULL)
+	{
+		log_error("db_open() error: %s\n", mysql_error(db));
+		ret = -1;
+		goto cleanup;
+	}
+
+	if (sign_id > 0)
+	{
+		snprintf(sql, sizeof(sql),
+				 "SELECT sign_%d AS sign FROM user_pubinfo WHERE UID = %d",
+				 sign_id, BBS_priv.uid);
+
+		if (mysql_query(db, sql) != 0)
+		{
+			log_error("Query sign error: %s\n", mysql_error(db));
+			ret = -1;
+			goto cleanup;
+		}
+		if ((rs = mysql_use_result(db)) == NULL)
+		{
+			log_error("Get sign data failed\n");
+			ret = -1;
+			goto cleanup;
+		}
+
+		if ((row = mysql_fetch_row(rs)))
+		{
+			len_content += snprintf(content + len_content,
+									ARTICLE_CONTENT_MAX_LEN - (size_t)len_content,
+									"\n\n--\n%s\n", row[0]);
+		}
+		mysql_free_result(rs);
+		rs = NULL;
+	}
+
+	// Calculate display length of content
+	content_display_length = str_length(content, 1);
+
+	// Begin transaction
+	if (mysql_query(db, "SET autocommit=0") != 0)
+	{
+		log_error("SET autocommit=0 error: %s\n", mysql_error(db));
+		ret = -1;
+		goto cleanup;
+	}
+
+	if (mysql_query(db, "BEGIN") != 0)
+	{
+		log_error("Begin transaction error: %s\n", mysql_error(db));
+		ret = -1;
+		goto cleanup;
+	}
+
+	// Secure SQL parameters
+	content_f = malloc((size_t)len_content * 2 + 1);
+	if (content_f == NULL)
+	{
+		log_error("malloc(content_f) error: OOM\n");
+		ret = -1;
+		goto cleanup;
+	}
+
+	mysql_real_escape_string(db, nickname_f, BBS_nickname, (unsigned long)strnlen(BBS_nickname, sizeof(BBS_nickname)));
+	mysql_real_escape_string(db, title_f, p_article_new->title, strnlen(p_article_new->title, sizeof(p_article_new->title)));
+	mysql_real_escape_string(db, content_f, content, (unsigned long)len_content);
+
+	free(content);
+	content = NULL;
+
+	// Add content
+	sql_content = malloc(SQL_BUFFER_LEN + (size_t)len_content * 2 + 1);
+	if (sql_content == NULL)
+	{
+		log_error("malloc(sql_content) error: OOM\n");
+		ret = -1;
+		goto cleanup;
+	}
+
+	snprintf(sql_content, SQL_BUFFER_LEN + (size_t)len_content * 2 + 1,
+			 "INSERT INTO bbs_content(AID, content) values(0, '%s')",
+			 content_f);
+
+	free(content_f);
+	content_f = NULL;
+
+	if (mysql_query(db, sql_content) != 0)
+	{
+		log_error("Add article content error: %s\n", mysql_error(db));
+		ret = -1;
+		goto cleanup;
+	}
+
+	p_article_new->cid = (int32_t)mysql_insert_id(db);
+
+	free(sql_content);
+	sql_content = NULL;
+
+	// Add article
+	snprintf(sql, sizeof(sql),
+			 "INSERT INTO bbs(SID, TID, UID, username, nickname, title, CID, transship, "
+			 "sub_dt, sub_ip, reply_note, exp, last_reply_dt, icon, length) "
+			 "VALUES(%d, 0, %d, '%s', '%s', '%s', %d, %d, NOW(), '%s', %d, %d, NOW(), 1, %d)",
+			 p_section->sid, BBS_priv.uid, BBS_username, nickname_f, title_f,
+			 p_article_new->cid, p_article_new->transship, hostaddr_client,
+			 reply_note, BBS_user_exp, content_display_length);
+
+	if (mysql_query(db, sql) != 0)
+	{
+		log_error("Add article error: %s\n", mysql_error(db));
+		ret = -1;
+		goto cleanup;
+	}
+
+	p_article_new->aid = (int32_t)mysql_insert_id(db);
+
+	// Link content to article
+	snprintf(sql, sizeof(sql),
+			 "UPDATE bbs_content SET AID = %d WHERE CID = %d",
+			 p_article_new->aid, p_article_new->cid);
 
-int article_post(SECTION_LIST *p_section, ARTICLE *p_article, ARTICLE_POST_TYPE type)
+	if (mysql_query(db, sql) != 0)
+	{
+		log_error("Update content error: %s\n", mysql_error(db));
+		ret = -1;
+		goto cleanup;
+	}
+
+	// Add exp
+	if (checkpriv(&BBS_priv, p_section->sid, S_GETEXP)) // Except in test section
+	{
+		snprintf(sql, sizeof(sql),
+				 "UPDATE user_pubinfo SET exp = exp + %d WHERE UID = %d",
+				 (p_article_new->transship ? 5 : 15), BBS_priv.uid);
+
+		if (mysql_query(db, sql) != 0)
+		{
+			log_error("Update exp error: %s\n", mysql_error(db));
+			ret = -1;
+			goto cleanup;
+		}
+	}
+
+	// Add log
+	snprintf(sql, sizeof(sql),
+			 "INSERT INTO bbs_article_op(AID, UID, type, op_dt, op_ip)"
+			 "VALUES(%d, %d, 'A', NOW(), '%s')",
+			 p_article_new->aid, BBS_priv.uid, hostaddr_client);
+
+	if (mysql_query(db, sql) != 0)
+	{
+		log_error("Add log error: %s\n", mysql_error(db));
+		ret = -1;
+		goto cleanup;
+	}
+
+	// Commit transaction
+	if (mysql_query(db, "COMMIT") != 0)
+	{
+		log_error("Commit transaction error: %s\n", mysql_error(db));
+		ret = -1;
+		goto cleanup;
+	}
+
+	mysql_close(db);
+	db = NULL;
+
+	clearscr();
+	moveto(1, 1);
+	prints("发送完成，新文章通常会在%d秒后可见", BBS_section_list_load_interval);
+	press_any_key();
+	ret = 1; // Success
+
+cleanup:
+	mysql_close(db);
+
+	// Cleanup buffers
+	editor_data_cleanup(p_editor_data);
+
+	free(sql_content);
+	free(content);
+	free(content_f);
+
+	return (int)ret;
+}
+
+int article_modify(const SECTION_LIST *p_section, const ARTICLE *p_article, ARTICLE *p_article_new)
 {
-	log_common("Debug: sid=%d aid=%d type=%d\n",
-			   p_section->sid, (p_article == NULL ? 0 : p_article->aid), type);
+	MYSQL *db = NULL;
+	MYSQL_RES *rs = NULL;
+	MYSQL_ROW row;
+	char sql[SQL_BUFFER_LEN];
+	char *sql_content = NULL;
+	char *content = NULL;
+	char *content_f = NULL;
+	long len_content;
+	int content_display_length;
+	int reply_note = 1;
+	int ch;
+	long ret = 0;
+	time_t now;
+	struct tm tm_modify_dt;
+	char str_modify_dt[MODIFY_DT_MAX_LEN + 1];
+
+	EDITOR_DATA *p_editor_data = NULL;
+
+	if (p_section == NULL || p_article == NULL)
+	{
+		log_error("NULL pointer error\n");
+	}
+
+	if (p_article->excerption) // Modify is not allowed
+	{
+		clearscr();
+		moveto(1, 1);
+		prints("该文章无法被编辑，请联系版主。");
+		press_any_key();
+
+		return 0;
+	}
+
+	db = db_open();
+	if (db == NULL)
+	{
+		log_error("db_open() error: %s\n", mysql_error(db));
+		ret = -1;
+		goto cleanup;
+	}
+
+	snprintf(sql, sizeof(sql),
+			 "SELECT bbs_content.CID, bbs_content.content, reply_note "
+			 "FROM bbs INNER JOIN bbs_content ON bbs.CID = bbs_content.CID "
+			 "WHERE bbs.AID = %d",
+			 p_article->aid);
+
+	if (mysql_query(db, sql) != 0)
+	{
+		log_error("Query article content error: %s\n", mysql_error(db));
+		ret = -1;
+		goto cleanup;
+	}
+	if ((rs = mysql_use_result(db)) == NULL)
+	{
+		log_error("Get article content data failed\n");
+		ret = -1;
+		goto cleanup;
+	}
+
+	if ((row = mysql_fetch_row(rs)))
+	{
+		content = malloc(ARTICLE_CONTENT_MAX_LEN);
+		if (content == NULL)
+		{
+			log_error("malloc(content) error: OOM\n");
+			ret = -1;
+			goto cleanup;
+		}
+
+		strncpy(content, row[1], ARTICLE_CONTENT_MAX_LEN - 1);
+		content[ARTICLE_CONTENT_MAX_LEN - 1] = '\0';
+
+		// Remove control sequence
+		len_content = str_filter(content, 0);
+
+		p_editor_data = editor_data_load(content);
+		if (p_editor_data == NULL)
+		{
+			log_error("editor_data_load(aid=%d, cid=%d) error\n", p_article->aid, atoi(row[0]));
+			ret = -1;
+			goto cleanup;
+		}
+
+		free(content);
+		content = NULL;
+
+		reply_note = atoi(row[2]);
+	}
+	mysql_free_result(rs);
+	rs = NULL;
+
+	mysql_close(db);
+	db = NULL;
+
+	for (ch = 'E'; !SYS_server_exit && toupper(ch) == 'E';)
+	{
+		editor_display(p_editor_data);
+
+		while (!SYS_server_exit)
+		{
+			clearscr();
+			moveto(1, 1);
+			prints("(S)保存, (C)取消, (N)通知%s or (E)再编辑? [S]: ",
+				   (reply_note ? "关闭" : "开启"));
+			iflush();
+
+			ch = igetch_t(MAX_DELAY_TIME);
+			switch (toupper(ch))
+			{
+			case KEY_NULL:
+			case KEY_TIMEOUT:
+				goto cleanup;
+			case CR:
+				igetch_reset();
+			case 'S':
+				break;
+			case 'C':
+				clearscr();
+				moveto(1, 1);
+				prints("取消...");
+				press_any_key();
+				goto cleanup;
+			case 'N':
+				reply_note = (reply_note ? 0 : 1);
+				continue;
+			case 'E':
+				break;
+			default: // Invalid selection
+				continue;
+			}
+
+			break;
+		}
+	}
+
+	if (SYS_server_exit) // Do not save data on shutdown
+	{
+		goto cleanup;
+	}
+
+	// Allocate buffers in big size
+	content = malloc(ARTICLE_CONTENT_MAX_LEN);
+	if (content == NULL)
+	{
+		log_error("malloc(content) error: OOM\n");
+		ret = -1;
+		goto cleanup;
+	}
+
+	len_content = editor_data_save(p_editor_data, content, ARTICLE_CONTENT_MAX_LEN - LINE_BUFFER_LEN);
+	if (len_content < 0)
+	{
+		log_error("editor_data_save() error\n");
+		ret = -1;
+		goto cleanup;
+	}
+
+	time(&now);
+	localtime_r(&now, &tm_modify_dt);
+	strftime(str_modify_dt, sizeof(str_modify_dt), "%Y-%m-%d %H:%M:%S (UTC %z)", &tm_modify_dt);
+
+	len_content += snprintf(content + len_content, LINE_BUFFER_LEN,
+							"\n--\n※ 作者已于 %s 修改本文※\n",
+							str_modify_dt);
+
+	// Calculate display length of content
+	content_display_length = str_length(content, 1);
+
+	db = db_open();
+	if (db == NULL)
+	{
+		log_error("db_open() error: %s\n", mysql_error(db));
+		ret = -1;
+		goto cleanup;
+	}
+
+	// Begin transaction
+	if (mysql_query(db, "SET autocommit=0") != 0)
+	{
+		log_error("SET autocommit=0 error: %s\n", mysql_error(db));
+		ret = -1;
+		goto cleanup;
+	}
+
+	if (mysql_query(db, "BEGIN") != 0)
+	{
+		log_error("Begin transaction error: %s\n", mysql_error(db));
+		ret = -1;
+		goto cleanup;
+	}
+
+	// Secure SQL parameters
+	content_f = malloc((size_t)len_content * 2 + 1);
+	if (content_f == NULL)
+	{
+		log_error("malloc(content_f) error: OOM\n");
+		ret = -1;
+		goto cleanup;
+	}
+
+	mysql_real_escape_string(db, content_f, content, (unsigned long)len_content);
+
+	free(content);
+	content = NULL;
+
+	// Add content
+	sql_content = malloc(SQL_BUFFER_LEN + (size_t)len_content * 2 + 1);
+	if (sql_content == NULL)
+	{
+		log_error("malloc(sql_content) error: OOM\n");
+		ret = -1;
+		goto cleanup;
+	}
+
+	snprintf(sql_content, SQL_BUFFER_LEN + (size_t)len_content * 2 + 1,
+			 "INSERT INTO bbs_content(AID, content) values(%d, '%s')",
+			 p_article->aid, content_f);
+
+	free(content_f);
+	content_f = NULL;
+
+	if (mysql_query(db, sql_content) != 0)
+	{
+		log_error("Add article content error: %s\n", mysql_error(db));
+		ret = -1;
+		goto cleanup;
+	}
+
+	p_article_new->cid = (int32_t)mysql_insert_id(db);
+
+	free(sql_content);
+	sql_content = NULL;
+
+	// Update article
+	snprintf(sql, sizeof(sql),
+			 "UPDATE bbs SET CID = %d, length = %d, reply_note = %d, excerption = 0 WHERE AID = %d", // Set excerption = 0 explictly in case of rare condition
+			 p_article_new->cid, content_display_length, reply_note, p_article->aid);
+
+	if (mysql_query(db, sql) != 0)
+	{
+		log_error("Add article error: %s\n", mysql_error(db));
+		ret = -1;
+		goto cleanup;
+	}
+
+	if (mysql_query(db, sql) != 0)
+	{
+		log_error("Update content error: %s\n", mysql_error(db));
+		ret = -1;
+		goto cleanup;
+	}
+
+	// Add log
+	snprintf(sql, sizeof(sql),
+			 "INSERT INTO bbs_article_op(AID, UID, type, op_dt, op_ip)"
+			 "VALUES(%d, %d, 'M', NOW(), '%s')",
+			 p_article->aid, BBS_priv.uid, hostaddr_client);
+
+	if (mysql_query(db, sql) != 0)
+	{
+		log_error("Add log error: %s\n", mysql_error(db));
+		ret = -1;
+		goto cleanup;
+	}
+
+	// Commit transaction
+	if (mysql_query(db, "COMMIT") != 0)
+	{
+		log_error("Commit transaction error: %s\n", mysql_error(db));
+		ret = -1;
+		goto cleanup;
+	}
+
+	mysql_close(db);
+	db = NULL;
+
+	clearscr();
+	moveto(1, 1);
+	prints("修改完成，新内容通常会在%d秒后可见", BBS_section_list_load_interval);
+	press_any_key();
+	ret = 1; // Success
+
+cleanup:
+	mysql_free_result(rs);
+	mysql_close(db);
+
+	// Cleanup buffers
+	editor_data_cleanup(p_editor_data);
+
+	free(sql_content);
+	free(content);
+	free(content_f);
+
+	return (int)ret;
+}
+
+int article_reply(const SECTION_LIST *p_section, const ARTICLE *p_article, ARTICLE *p_article_new)
+{
+	MYSQL *db = NULL;
+	MYSQL_RES *rs = NULL;
+	MYSQL_ROW row;
+	long line_offsets[ARTICLE_QUOTE_MAX_LINES + 1];
+	char sql[SQL_BUFFER_LEN];
+	char *sql_content = NULL;
+	EDITOR_DATA *p_editor_data = NULL;
+	char title_input[BBS_article_title_max_len + sizeof("Re: ")];
+	char title_f[BBS_article_title_max_len * 2 + 1];
+	char *content = NULL;
+	char *content_f = NULL;
+	long len_content;
+	int content_display_length;
+	char nickname_f[BBS_nickname_max_len * 2 + 1];
+	int sign_id = 0;
+	int reply_note = 0;
+	long len;
+	int ch;
+	char *p, *q;
+	int eol;
+	int display_len;
+	long quote_content_lines;
+	long i;
+	long ret = 0;
+	int topic_locked = 0;
+	char msg[BBS_msg_max_len];
+	char msg_f[BBS_msg_max_len * 2 + 1];
+	int len_msg;
+
+	if (p_section == NULL || p_article == NULL)
+	{
+		log_error("NULL pointer error\n");
+	}
+
+	if (!checkpriv(&BBS_priv, p_section->sid, S_POST))
+	{
+		clearscr();
+		moveto(1, 1);
+		prints("您没有权限在本版块发表文章\n");
+		press_any_key();
+
+		return 0;
+	}
+
+	p_article_new->title[0] = '\0';
+	snprintf(title_input, sizeof(title_input), "Re: %s", p_article->title);
+	len = split_line(title_input, TITLE_INPUT_MAX_LEN, &eol, &display_len, 0);
+	title_input[len] = '\0';
+
+	db = db_open();
+	if (db == NULL)
+	{
+		log_error("db_open() error: %s\n", mysql_error(db));
+		ret = -1;
+		goto cleanup;
+	}
+
+	snprintf(sql, sizeof(sql),
+			 "SELECT `lock` FROM bbs WHERE AID = %d",
+			 (p_article->tid == 0 ? p_article->aid : p_article->tid));
+
+	if (mysql_query(db, sql) != 0)
+	{
+		log_error("Query article status error: %s\n", mysql_error(db));
+		ret = -1;
+		goto cleanup;
+	}
+	if ((rs = mysql_store_result(db)) == NULL)
+	{
+		log_error("Get article status data failed\n");
+		ret = -1;
+		goto cleanup;
+	}
+
+	if ((row = mysql_fetch_row(rs)))
+	{
+		if (atoi(row[0]) != 0)
+		{
+			topic_locked = 1;
+		}
+	}
+	mysql_free_result(rs);
+	rs = NULL;
+
+	if (topic_locked) // Reply is not allowed
+	{
+		mysql_close(db);
+		db = NULL;
+
+		clearscr();
+		moveto(1, 1);
+		prints("该主题谢绝回复");
+		press_any_key();
+
+		goto cleanup;
+	}
+
+	snprintf(sql, sizeof(sql),
+			 "SELECT bbs_content.CID, bbs_content.content "
+			 "FROM bbs INNER JOIN bbs_content ON bbs.CID = bbs_content.CID "
+			 "WHERE bbs.AID = %d",
+			 p_article->aid);
+
+	if (mysql_query(db, sql) != 0)
+	{
+		log_error("Query article content error: %s\n", mysql_error(db));
+		ret = -1;
+		goto cleanup;
+	}
+	if ((rs = mysql_use_result(db)) == NULL)
+	{
+		log_error("Get article content data failed\n");
+		ret = -1;
+		goto cleanup;
+	}
+
+	if ((row = mysql_fetch_row(rs)))
+	{
+		content = malloc(ARTICLE_CONTENT_MAX_LEN);
+		if (content == NULL)
+		{
+			log_error("malloc(content) error: OOM\n");
+			ret = -1;
+			goto cleanup;
+		}
+
+		content_f = malloc(ARTICLE_CONTENT_MAX_LEN);
+		if (content_f == NULL)
+		{
+			log_error("malloc(content_f) error: OOM\n");
+			ret = -1;
+			goto cleanup;
+		}
+
+		// Apply LML render to content body
+		len = lml_render(row[1], content_f, ARTICLE_CONTENT_MAX_LEN, 0);
+		content_f[len] = '\0';
+
+		// Remove control sequence
+		len = str_filter(content_f, 0);
+
+		len = snprintf(content, ARTICLE_CONTENT_MAX_LEN,
+					   "\n\n【 在 %s (%s) 的大作中提到: 】\n",
+					   p_article->username, p_article->nickname);
+
+		quote_content_lines = split_data_lines(content_f, ARTICLE_QUOTE_LINE_MAX_LEN, line_offsets, ARTICLE_QUOTE_MAX_LINES + 1, 0, NULL);
+		for (i = 0; i < quote_content_lines; i++)
+		{
+			memcpy(content + len, ": ", 2); // quote line prefix
+			len += 2;
+			memcpy(content + len, content_f + line_offsets[i], (size_t)(line_offsets[i + 1] - line_offsets[i]));
+			len += (line_offsets[i + 1] - line_offsets[i]);
+			if (content[len - 1] != '\n') // Appennd \n if not exist
+			{
+				content[len] = '\n';
+				len++;
+			}
+		}
+		if (content[len - 1] != '\n') // Appennd \n if not exist
+		{
+			content[len] = '\n';
+			len++;
+		}
+		content[len] = '\0';
+
+		free(content_f);
+		content_f = NULL;
+
+		p_editor_data = editor_data_load(content);
+		if (p_editor_data == NULL)
+		{
+			log_error("editor_data_load(aid=%d, cid=%d) error\n", p_article->aid, atoi(row[0]));
+			ret = -1;
+			goto cleanup;
+		}
+
+		free(content);
+		content = NULL;
+	}
+	mysql_free_result(rs);
+	rs = NULL;
+
+	mysql_close(db);
+	db = NULL;
+
+	// Set title and sign
+	for (ch = 'T'; !SYS_server_exit;)
+	{
+		clearscr();
+		moveto(21, 1);
+		prints("回复文章于 %s[%s] 讨论区，通知：%s", p_section->stitle, p_section->sname, (reply_note ? "开启" : "关闭"));
+		moveto(22, 1);
+		prints("标题: %s", (p_article_new->title[0] == '\0' ? "[无]" : p_article_new->title));
+		moveto(23, 1);
+		prints("使用第 %d 个签名", sign_id);
+
+		if (toupper(ch) != 'T')
+		{
+			prints("    按0~3选签名档(0表示不使用)");
+
+			moveto(24, 1);
+			prints("T改标题, C取消, N%s, Enter继续: ",
+				   (reply_note ? "通知关闭" : "通知开启"));
+			iflush();
+			ch = 0;
+		}
+
+		for (; !SYS_server_exit; ch = igetch_t(MAX_DELAY_TIME))
+		{
+			switch (toupper(ch))
+			{
+			case KEY_NULL:
+			case KEY_TIMEOUT:
+				goto cleanup;
+			case CR:
+				igetch_reset();
+				break;
+			case 'T':
+				len = get_data(24, 1, "标题: ", title_input, sizeof(title_input), TITLE_INPUT_MAX_LEN);
+				for (p = title_input; *p == ' '; p++)
+					;
+				for (q = title_input + len; q > p && *(q - 1) == ' '; q--)
+					;
+				*q = '\0';
+				len = q - p;
+				if (*p != '\0')
+				{
+					memcpy(p_article_new->title, p, (size_t)len + 1);
+					memcpy(title_input, p_article_new->title, (size_t)len + 1);
+				}
+				ch = 0;
+				break;
+			case 'C':
+				clearscr();
+				moveto(1, 1);
+				prints("取消...");
+				press_any_key();
+				goto cleanup;
+			case 'N':
+				reply_note = (reply_note ? 0 : 1);
+				break;
+			case '0':
+			case '1':
+			case '2':
+			case '3':
+				sign_id = ch - '0';
+				break;
+			default: // Invalid selection
+				continue;
+			}
+
+			break;
+		}
+
+		if (ch != CR || p_article_new->title[0] == '\0')
+		{
+			continue;
+		}
+
+		for (ch = 'E'; !SYS_server_exit && toupper(ch) == 'E';)
+		{
+			editor_display(p_editor_data);
+
+			clearscr();
+			moveto(1, 1);
+			prints("(S)发送, (C)取消, (T)更改标题 or (E)再编辑? [S]: ");
+			iflush();
+
+			for (ch = 0; !SYS_server_exit; ch = igetch_t(MAX_DELAY_TIME))
+			{
+				switch (toupper(ch))
+				{
+				case KEY_NULL:
+				case KEY_TIMEOUT:
+					goto cleanup;
+				case CR:
+					igetch_reset();
+				case 'S':
+					break;
+				case 'C':
+					clearscr();
+					moveto(1, 1);
+					prints("取消...");
+					press_any_key();
+					goto cleanup;
+				case 'T':
+					break;
+				case 'E':
+					break;
+				default: // Invalid selection
+					continue;
+				}
+
+				break;
+			}
+		}
+
+		if (toupper(ch) != 'T')
+		{
+			break;
+		}
+	}
+
+	if (SYS_server_exit) // Do not save data on shutdown
+	{
+		goto cleanup;
+	}
+
+	content = malloc(ARTICLE_CONTENT_MAX_LEN);
+	if (content == NULL)
+	{
+		log_error("malloc(content) error: OOM\n");
+		ret = -1;
+		goto cleanup;
+	}
+
+	len_content = editor_data_save(p_editor_data, content, ARTICLE_CONTENT_MAX_LEN);
+	if (len_content < 0)
+	{
+		log_error("editor_data_save() error\n");
+		ret = -1;
+		goto cleanup;
+	}
+
+	db = db_open();
+	if (db == NULL)
+	{
+		log_error("db_open() error: %s\n", mysql_error(db));
+		ret = -1;
+		goto cleanup;
+	}
+
+	if (sign_id > 0)
+	{
+		snprintf(sql, sizeof(sql),
+				 "SELECT sign_%d AS sign FROM user_pubinfo WHERE UID = %d",
+				 sign_id, BBS_priv.uid);
+
+		if (mysql_query(db, sql) != 0)
+		{
+			log_error("Query sign error: %s\n", mysql_error(db));
+			ret = -1;
+			goto cleanup;
+		}
+		if ((rs = mysql_use_result(db)) == NULL)
+		{
+			log_error("Get sign data failed\n");
+			ret = -1;
+			goto cleanup;
+		}
+
+		if ((row = mysql_fetch_row(rs)))
+		{
+			len_content += snprintf(content + len_content,
+									ARTICLE_CONTENT_MAX_LEN - (size_t)len_content,
+									"\n\n--\n%s\n", row[0]);
+		}
+		mysql_free_result(rs);
+		rs = NULL;
+	}
+
+	// Calculate display length of content
+	content_display_length = str_length(content, 1);
+
+	// Begin transaction
+	if (mysql_query(db, "SET autocommit=0") != 0)
+	{
+		log_error("SET autocommit=0 error: %s\n", mysql_error(db));
+		ret = -1;
+		goto cleanup;
+	}
+
+	if (mysql_query(db, "BEGIN") != 0)
+	{
+		log_error("Begin transaction error: %s\n", mysql_error(db));
+		ret = -1;
+		goto cleanup;
+	}
+
+	// Secure SQL parameters
+	content_f = malloc((size_t)len_content * 2 + 1);
+	if (content_f == NULL)
+	{
+		log_error("malloc(content_f) error: OOM\n");
+		ret = -1;
+		goto cleanup;
+	}
+
+	mysql_real_escape_string(db, nickname_f, BBS_nickname, (unsigned long)strnlen(BBS_nickname, sizeof(BBS_nickname)));
+	mysql_real_escape_string(db, title_f, p_article_new->title, strnlen(p_article_new->title, sizeof(p_article_new->title)));
+	mysql_real_escape_string(db, content_f, content, (unsigned long)len_content);
+
+	free(content);
+	content = NULL;
+
+	// Add content
+	sql_content = malloc(SQL_BUFFER_LEN + (size_t)len_content * 2 + 1);
+	if (sql_content == NULL)
+	{
+		log_error("malloc(sql_content) error: OOM\n");
+		ret = -1;
+		goto cleanup;
+	}
+
+	snprintf(sql_content, SQL_BUFFER_LEN + (size_t)len_content * 2 + 1,
+			 "INSERT INTO bbs_content(AID, content) values(0, '%s')",
+			 content_f);
+
+	free(content_f);
+	content_f = NULL;
+
+	if (mysql_query(db, sql_content) != 0)
+	{
+		log_error("Add article content error: %s\n", mysql_error(db));
+		ret = -1;
+		goto cleanup;
+	}
+
+	p_article_new->cid = (int32_t)mysql_insert_id(db);
+
+	free(sql_content);
+	sql_content = NULL;
+
+	// Add article
+	snprintf(sql, sizeof(sql),
+			 "INSERT INTO bbs(SID, TID, UID, username, nickname, title, CID, transship, "
+			 "sub_dt, sub_ip, reply_note, exp, last_reply_dt, icon, length) "
+			 "VALUES(%d, %d, %d, '%s', '%s', '%s', %d, 0, NOW(), '%s', %d, %d, NOW(), 1, %d)",
+			 p_section->sid, (p_article->tid == 0 ? p_article->aid : p_article->tid),
+			 BBS_priv.uid, BBS_username, nickname_f, title_f,
+			 p_article_new->cid, hostaddr_client,
+			 reply_note, BBS_user_exp, content_display_length);
+
+	if (mysql_query(db, sql) != 0)
+	{
+		log_error("Add article error: %s\n", mysql_error(db));
+		ret = -1;
+		goto cleanup;
+	}
+
+	p_article_new->aid = (int32_t)mysql_insert_id(db);
+
+	// Update topic article
+	snprintf(sql, sizeof(sql),
+			 "UPDATE bbs SET reply_count = reply_count + 1, "
+			 "last_reply_dt = NOW(), last_reply_UID=%d, last_reply_username = '%s', "
+			 "last_reply_nickname = '%s' WHERE AID = %d",
+			 BBS_priv.uid, BBS_username, nickname_f,
+			 (p_article->tid == 0 ? p_article->aid : p_article->tid));
+
+	if (mysql_query(db, sql) != 0)
+	{
+		log_error("Update topic article error: %s\n", mysql_error(db));
+		ret = -1;
+		goto cleanup;
+	}
+
+	// Link content to article
+	snprintf(sql, sizeof(sql),
+			 "UPDATE bbs_content SET AID = %d WHERE CID = %d",
+			 p_article_new->aid, p_article_new->cid);
+
+	if (mysql_query(db, sql) != 0)
+	{
+		log_error("Update content error: %s\n", mysql_error(db));
+		ret = -1;
+		goto cleanup;
+	}
+
+	// Notify the authors of the topic / article which is replyed.
+	snprintf(sql, sizeof(sql),
+			 "SELECT DISTINCT UID FROM bbs WHERE (AID = %d OR AID = %d) "
+			 "AND visible AND reply_note AND UID <> %d",
+			 p_article->tid, p_article->aid, BBS_priv.uid);
+
+	if (mysql_query(db, sql) != 0)
+	{
+		log_error("Read reply info error: %s\n", mysql_error(db));
+		ret = -1;
+		goto cleanup;
+	}
+	if ((rs = mysql_store_result(db)) == NULL)
+	{
+		log_error("Get reply info failed\n");
+		ret = -1;
+		goto cleanup;
+	}
+
+	while ((row = mysql_fetch_row(rs)))
+	{
+		// Send notification message
+		len_msg = snprintf(msg, BBS_msg_max_len,
+						   "有人回复了您所发表/回复的文章，快来"
+						   "[article %d]看看[/article]《%s》吧！\n",
+						   p_article_new->aid, title_f);
+
+		mysql_real_escape_string(db, msg_f, msg, (unsigned long)len_msg);
+
+		snprintf(sql, sizeof(sql),
+				 "INSERT INTO bbs_msg(fromUID, toUID, content, send_dt, send_ip) "
+				 "VALUES(%d, %d, '%s', NOW(), '%s')",
+				 BBS_sys_id, atoi(row[0]), msg_f, hostaddr_client);
+
+		if (mysql_query(db, sql) != 0)
+		{
+			log_error("Insert msg error: %s\n", mysql_error(db));
+			ret = -1;
+			goto cleanup;
+		}
+	}
+	mysql_free_result(rs);
+	rs = NULL;
+
+	// Add exp
+	if (checkpriv(&BBS_priv, p_section->sid, S_GETEXP)) // Except in test section
+	{
+		snprintf(sql, sizeof(sql),
+				 "UPDATE user_pubinfo SET exp = exp + %d WHERE UID = %d",
+				 3, BBS_priv.uid);
+
+		if (mysql_query(db, sql) != 0)
+		{
+			log_error("Update exp error: %s\n", mysql_error(db));
+			ret = -1;
+			goto cleanup;
+		}
+	}
+
+	// Add log
+	snprintf(sql, sizeof(sql),
+			 "INSERT INTO bbs_article_op(AID, UID, type, op_dt, op_ip)"
+			 "VALUES(%d, %d, 'A', NOW(), '%s')",
+			 p_article_new->aid, BBS_priv.uid, hostaddr_client);
+
+	if (mysql_query(db, sql) != 0)
+	{
+		log_error("Add log error: %s\n", mysql_error(db));
+		ret = -1;
+		goto cleanup;
+	}
+
+	// Commit transaction
+	if (mysql_query(db, "COMMIT") != 0)
+	{
+		log_error("Commit transaction error: %s\n", mysql_error(db));
+		ret = -1;
+		goto cleanup;
+	}
+
+	mysql_close(db);
+	db = NULL;
+
+	clearscr();
+	moveto(1, 1);
+	prints("发送完成，新文章通常会在%d秒后可见", BBS_section_list_load_interval);
+	press_any_key();
+	ret = 1; // Success
+
+cleanup:
+	mysql_free_result(rs);
+	mysql_close(db);
+
+	// Cleanup buffers
+	editor_data_cleanup(p_editor_data);
+
+	free(sql_content);
+	free(content);
+	free(content_f);
 
-	return 0;
+	return (int)ret;
 }