New UI subsystem: Panty & Stocking Browser (psb).

First two clients: view_edit_history and admin_edit were also included.


git-svn-id: http://opensvn.csie.org/pttbbs/trunk@5143 63ad8ddf-47c3-0310-b6dd-a9e9d9715204

7 files changed, 526 insertions, 149 deletions

diff --git a/pttbbs/include/proto.h b/pttbbs/include/proto.h
index 7ed488c9..8bca64ee 100644
--- a/pttbbs/include/proto.h
+++ b/pttbbs/include/proto.h
@@ -150,6 +150,10 @@ int card_99(void);
 int ccw_talk(int fd, int destuid);	// common chat window: private talk
 int ccw_chat(int fd);			// common chat window: chatroom
 
+/* psb (panty and stocking browser) */
+int psb_view_edit_history(const char *base, const char *subject, int max_hist);
+int psb_admin_edit();
+
 /* chc */
 void chc(int s, ChessGameMode mode);
 int chc_main(void);
diff --git a/pttbbs/include/pttstruct.h b/pttbbs/include/pttstruct.h
index 3e8d7310..0f73f262 100644
--- a/pttbbs/include/pttstruct.h
+++ b/pttbbs/include/pttstruct.h
@@ -450,7 +450,7 @@ typedef struct menu_t {
 
 /* Used to pass commands to the readmenu.
  * direct mapping, indexed by ascii code. */
-#define onekey_size ((int) 'z')
+#define onekey_size ((int) '~')
 /* keymap, 若 needitem = 0 表示不需要 item, func 的 type 應為 int (*)(void).
  * 否則應為 int (*)(int ent, const fileheader_t *fhdr, const char *direct) */
 typedef struct {
diff --git a/pttbbs/mbbsd/Makefile b/pttbbs/mbbsd/Makefile
index 6b7b0beb..a77dee71 100644
--- a/pttbbs/mbbsd/Makefile
+++ b/pttbbs/mbbsd/Makefile
@@ -8,19 +8,19 @@ SRCROOT=	..
 #######################################################################
 
 PROG=	mbbsd
-COREOBJS = bbs.o announce.o read.o board.o cache.o cal.o brc.o mail.o record.o fav.o
+COREOBJS = bbs.o announce.o read.o board.o brc.o mail.o record.o fav.o
 ACCOBJS  = user.o register.o passwd.o emaildb.o
 NETOBJS  = mbbsd.o io.o term.o telnet.o
 TALKOBJS = friend.o talk.o ccw.o
-UTILOBJS = stuff.o kaede.o convert.o name.o syspost.o
+UTILOBJS = stuff.o kaede.o convert.o name.o syspost.o cache.o cal.o
+UIOBJS   = menu.o vtuikit.o psb.o
 PAGEROBJS= more.o pmore.o
 PLUGOBJS = calendar.o ordersong.o gamble.o angel.o
 CHESSOBJS= chess.o chc.o chc_tab.o ch_go.o ch_gomo.o ch_dark.o ch_reversi.o
 GAMEOBJS = card.o chicken.o
-OBJS:=	admin.o assess.o edit.o menu.o xyz.o var.o vtuikit.o \
-	vote.o voteboard.o \
+OBJS:=	admin.o assess.o edit.o xyz.o var.o vote.o voteboard.o \
 	$(COREOBJS)  $(ACCOBJS) $(NETOBJS) $(TALKOBJS) $(UTILOBJS) \
-	$(PAGEROBJS) $(PLUGOBJS) \
+	$(UIOBJS) $(PAGEROBJS) $(PLUGOBJS) \
 	$(CHESSOBJS) $(GAMEOBJS)
 
 #######################################################################
diff --git a/pttbbs/mbbsd/admin.c b/pttbbs/mbbsd/admin.c
index 854477b6..f3511a17 100644
--- a/pttbbs/mbbsd/admin.c
+++ b/pttbbs/mbbsd/admin.c
@@ -746,153 +746,11 @@ m_board(void)
     return 0;
 }
 
-static void
-str_unify_blank(char *s)
-{
-    while(*s)
-    {
-	if (*s == '\t') *s = ' ';
-	s++;
-    }
-}
-
-// 偷懶一下，寫死最大上限。
-#define MAX_ENTRIES (100)
-#define min(a,b) ((a)<(b) ? (a) : (b))
-
-// TODO 哪天把這種 UI 寫的更 general 一點...
-
 /* 設定系統檔案 */
 int
 x_file(void)
 {
-    char *entries[MAX_ENTRIES] = {NULL};
-    int  centries = 0, i = 0;
-    char *fn, *v;
-    int sel = 0, page = 0;
-    char buf[PATHLEN];
-    FILE *fp = NULL;
-
-    fp = fopen(FN_CONF_EDITABLE, "rt");
-    if (!fp) 
-    {
-	// you can find a sample in sample/etc/editable
-	vmsgf("未設定可編輯檔案列表[%s]，請洽系統站長。", FN_CONF_EDITABLE);
-	return 0;
-    }
-
-    // load the editable file.
-    // format: filename [ \t]* description
-    while (centries < MAX_ENTRIES && fgets(buf, sizeof(buf), fp))
-    {
-	if (!buf[0] || buf[0] == '#' || buf[0] == '.' 
-	    || buf[0] == '/' || buf[0] == ' ')
-	    continue;
-	str_unify_blank(buf); // replace all \t to ' ' in buf.
-	v = strchr(buf, ' '); // find if description exists.
-	if (v == NULL) continue;
-	fn = strstr(buf, "..");	// see if someone trying to crack
-	if (fn && fn < v) continue;
-	// reject anything outside etc/ folder.
-	if (strncmp(buf, "etc/", strlen("etc/")) != 0)
-	    continue;
-	chomp(buf);
-	entries[centries++] = strdup(buf);
-    }
-    fclose(fp);
-    if (centries == 0)
-    {
-	vmsg("無可編輯檔案，請洽系統站長。");
-	return 0;
-    }
-
-    // edit the files!
-    while (sel >= 0)
-    {
-	const int rows = t_lines-2;
-
-	// display.
-	clear(); showtitle("系統檔案", "編輯系統檔案");
-	for (i = page*rows; i < min(centries, (page+1)*rows); i++)
-	{
-	    // parse entry
-	    strlcpy(buf, entries[i], sizeof(buf));
-	    fn = buf;
-	    v = strchr(fn, ' ');
-	    *v++ = 0;
-	    while (*v == ' ') v++;
-	    if (strlen(fn) > 30)
-		strcpy(fn+30-2, "..");
-	    prints("  %3d. %s" 
-		     "%-36.36s " 
-		    ANSI_COLOR(0;1) "%-30.30s"
-		    ANSI_RESET "\n", 
-		    i+1, 
-		    dashf(fn) ? ANSI_COLOR(1;32) : ANSI_COLOR(1;30;40),
-		    v, fn);
-	}
-	vs_footer(" 編輯系統檔案 ",
-		" (jk/↑↓/0-9)移動 (Enter/→)編輯 (d)刪除 \t(q/←)跳出");
-	cursor_show(1+sel-page*rows, 0);
-	switch((i = vkey()))
-	{
-	    case 'q': case KEY_LEFT:
-		sel = -1; continue;
-	    case KEY_HOME: sel = 0; break;
-	    case KEY_END:  sel = centries-1; break;
-	    case KEY_PGDN: sel += rows; 
-			   if (sel >= centries) sel = centries-1;
-			   break;
-	    case KEY_PGUP: sel -= rows;
-			   if (sel < 0) sel = 0;
-			   break;
-	    case 'k': case KEY_UP: 
-		if (sel > 0) sel--; break;
-	    case 'j': case KEY_DOWN:
-		if (sel < centries-1) sel++; break;
-
-	    case 'd':
-		strlcpy(buf, entries[sel], sizeof(buf));
-		v = strchr(buf, ' '); *v++ = 0;
-		i = vansf("確定要刪除 %s 嗎？ (y/N) ", v);
-		if (i == 'y')
-		    unlink(buf);
-		vmsgf("系統檔案[%s]: %s", buf, !dashf(buf) ? 
-			"刪除成功\ " : "未刪除");
-		break;
-
-	    case KEY_ENTER: case KEY_RIGHT:
-		strlcpy(buf, entries[sel], sizeof(buf));
-		v = strchr(buf, ' '); *v++ = 0;
-		i = veditfile(buf);
-		// log file change
-		if (i != EDIT_ABORTED)
-		{
-		    log_filef("log/etc_edit.log", LOG_CREAT,
-			    "%s %s %s # %s\n", Cdate(&now),
-			    cuser.userid, buf, v);
-		}
-		vmsgf("系統檔案[%s]: %s", buf, (i == -1) ? 
-			"未改變" : "更新完畢");
-		break;
-
-	    default:
-		if (i >= '0' && i <= '9')
-		{
-		    sel = search_num(i, centries-1);
-		    if (sel < 0) sel = 0;
-		}
-		break;
-	}
-	// change page if required.
-	page = sel / rows;
-    }
-
-    // free the entries
-    for (i = 0; i < centries; i++)
-	free(entries[i]);
-
-    return FULLUPDATE;
+    return psb_admin_edit();
 }
 
 static int add_board_record(const boardheader_t *board)
diff --git a/pttbbs/mbbsd/bbs.c b/pttbbs/mbbsd/bbs.c
index 68245c04..1b112a23 100644
--- a/pttbbs/mbbsd/bbs.c
+++ b/pttbbs/mbbsd/bbs.c
@@ -3541,6 +3541,53 @@ view_postinfo(int ent, const fileheader_t * fhdr, const char *direct, int crs_ln
     return FULLUPDATE;
 }
 
+static int
+view_post_history(int ent, const fileheader_t * fhdr, const char *direct)
+{
+    const char *err_no_history = "抱歉，此篇文章暫無編輯歷史記錄可供檢視";
+    char hist_file[PATHLEN];
+    int fd, maxhist = 0;
+
+    // TODO allow author?
+    if (!(currmode & MODE_BOARD))
+        return DONOTHING;
+
+    if ((!fhdr) ||
+        ((fhdr->filename[0] == '.' || !fhdr->filename[0]) &&
+         (strcmp(fhdr->filename, FN_SAFEDEL) != 0))) {
+        vmsg(err_no_history);
+        return FULLUPDATE;
+    }
+
+    // build history index file name
+    setdirpath(hist_file, direct, FN_EDITHISTORY "/");
+    if (strcmp(FN_SAFEDEL, fhdr->filename) == 0) {
+        assert(strlen(FN_SAFEDEL) == strlen("M."));
+        // M.1 is a dirty hack, anyway..
+        strlcat(hist_file, "M.1", sizeof(hist_file));
+        strlcat(hist_file, fhdr->filename + strlen(FN_SAFEDEL) + 1, sizeof(hist_file));
+    } else {
+        strlcat(hist_file, fhdr->filename, sizeof(hist_file));
+    }
+
+    // TODO check if hist_file is a valid file (directoy gives fake result)
+
+    fd = open(hist_file, O_RDONLY);
+    if (fd < 0) {
+        vmsg(err_no_history);
+        return FULLUPDATE;
+    }
+    read(fd, &maxhist, sizeof(maxhist));
+    close(fd);
+    if (maxhist < 1) {
+        vmsg(err_no_history);
+        return FULLUPDATE;
+    }
+
+    psb_view_edit_history(hist_file, fhdr->title, maxhist+1);
+    return FULLUPDATE;
+}
+
 #ifdef OUTJOBSPOOL
 /* 看板備份 */
 static int
@@ -4049,6 +4096,10 @@ const onekey_t read_comms[] = {
     { 1, old_cross_post }, // 'x'
     { 1, reply_post }, // 'y'
     { 0, b_man }, // 'z' 122
+    { 0, NULL }, // '{' 123
+    { 0, NULL }, // '|' 124
+    { 0, NULL }, // '}' 125
+    { 1, view_post_history }, // '~' 126
 };
 
 int
diff --git a/pttbbs/mbbsd/mail.c b/pttbbs/mbbsd/mail.c
index 0ddc60fc..84c4d69c 100644
--- a/pttbbs/mbbsd/mail.c
+++ b/pttbbs/mbbsd/mail.c
@@ -1934,6 +1934,10 @@ static const onekey_t mail_comms[] = {
     { 1, m_forward }, // 'x'
     { 1, multi_reply }, // 'y'
     { 0, mail_man }, // 'z' 122
+    { 0, NULL }, // '{' 123
+    { 0, NULL }, // '|' 124
+    { 0, NULL }, // '}' 125
+    { 0, NULL }, // '~' 126
 };
 
 int
diff --git a/pttbbs/mbbsd/psb.c b/pttbbs/mbbsd/psb.c
new file mode 100644
index 00000000..7c16c53b
--- /dev/null
+++ b/pttbbs/mbbsd/psb.c
@@ -0,0 +1,460 @@
+/* $Id$ */
+#include "bbs.h"
+
+// Panty & Stocking Browser
+//
+// A generic framework for displaying pre-generated data by a simplified
+// page-view user interface.
+//
+// Author: Hung-Te Lin (piaip)
+// --------------------------------------------------------------------------
+// Copyright (c) 2010 Hung-Te Lin <piaip@csie.ntu.edu.tw>
+// All rights reserved.
+// Distributed under BSD license (GPL compatible).
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are met:
+//
+//   * Redistributions of source code must retain the above copyright
+//     notice, this list of conditions and the following disclaimer.
+//   * Redistributions in binary form must reproduce the above copyright
+//     notice, this list of conditions and the following disclaimer in the
+//     documentation and/or other materials provided with the distribution.
+// --------------------------------------------------------------------------
+
+///////////////////////////////////////////////////////////////////////////
+// Constant
+#define PSB_EOF (-1)
+#define PSB_NA  (-2)
+#define PSB_NOP (-3)
+
+///////////////////////////////////////////////////////////////////////////
+// Data Structure
+typedef struct {
+    int curr, total, header_lines, footer_lines;
+    int key;
+    void *ctx;
+    int (*header)(void *ctx); 
+    int (*footer)(void *ctx); 
+    int (*renderer)(int i, int curr, int total, int rows, void *ctx);
+    int (*cursor)(int y, int curr, void *ctx);
+    int (*input_processor)(int key, int curr, int total, int rows, void *ctx);
+} PSB_CTX;
+
+static int
+psb_default_header(void *ctx) {
+    vs_hdr2bar("Panty & Stocking Browser", BBSNAME);
+    return 0;
+}
+
+static int
+psb_default_footer(void *ctx) {
+    vs_footer(" PSB 1.0 ",
+              " (↑/↓/PgUp/PgDn/0-9)Move (Enter/→)Select \t(q/←)Quit");
+    return 0;
+}
+
+static int
+psb_default_renderer(int i, int curr, int total, int rows, void *ctx) {
+    prints("   %s(Demo) %5d / %5d Item\n", (i == curr) ? "*" : " ", i, total);
+    return 0;
+}
+
+static int
+psb_default_cursor(int y, int curr, void * ctx) {
+    outs("=>");
+    // cursor_show(y, 0);
+    return 0;
+}
+
+static int
+psb_default_input_processor(int key, int curr, int total, int rows, void *ctx) {
+    switch(key) {
+        case 'q':
+        case KEY_LEFT:
+            return PSB_EOF;
+
+        case KEY_HOME:
+        case '0':
+            return 0;
+
+        case KEY_END:  
+        case '$':
+            return total-1;
+
+        case KEY_PGUP:
+        case Ctrl('B'):
+        case 'N':
+            if (curr / rows > 0)
+                return curr - rows;
+            return 0;
+
+        case KEY_PGDN:
+        case Ctrl('F'):
+        case 'P':
+            if (curr + rows < total)
+                return curr + rows;
+            return total - 1;
+
+        case KEY_UP: 
+        case Ctrl('P'):
+        case 'p':
+        case 'k':
+            return (curr > 0) ? curr-1 : curr;
+
+        case KEY_DOWN:
+        case Ctrl('N'):
+        case 'n':
+        case 'j':
+            return (curr + 1 < total) ? curr + 1 : curr;
+
+        default:
+            if (key >= '0' && key <= '9') {
+                int newval = search_num(key, total);
+                if (newval >= 0 && newval < total)
+                    return newval;
+                return curr;
+            }
+            break;
+    }
+    return  PSB_NA;
+}
+
+static void
+psb_init_defaults(PSB_CTX *psbctx) {
+    // pre-setup
+    assert(psbctx);
+    if (!psbctx->header)
+        psbctx->header = psb_default_header;
+    if (!psbctx->footer)
+        psbctx->footer = psb_default_footer;
+    if (!psbctx->renderer)
+        psbctx->renderer = psb_default_renderer;
+    if (!psbctx->cursor)
+        psbctx->cursor = psb_default_cursor;
+    if (!psbctx->footer)
+        psbctx->footer = psb_default_footer;
+
+    assert(psbctx->curr >= 0 &&
+           psbctx->total >= 0 &&
+           psbctx->curr < psbctx->total);
+    assert(psbctx->header_lines > 0 &&
+           psbctx->footer_lines);
+}
+
+int
+psb_main(PSB_CTX *psbctx)
+{
+    psb_init_defaults(psbctx);
+
+    while (1) {
+        int i;
+        int rows = t_lines - psbctx->header_lines - psbctx->footer_lines;
+        int base;
+
+        assert(rows > 0);
+        base = psbctx->curr / rows * rows;
+        clear();
+        SOLVE_ANSI_CACHE();
+        psbctx->header(psbctx->ctx);
+        for (i = 0; i < rows; i++) {
+            move(psbctx->header_lines + i, 0);
+            SOLVE_ANSI_CACHE();
+            if (base + i < psbctx->total)
+                psbctx->renderer(base + i, psbctx->curr, psbctx->total, 
+                                 rows, psbctx->ctx);
+        }
+        move(t_lines - psbctx->footer_lines, 0);
+        SOLVE_ANSI_CACHE();
+        psbctx->footer(psbctx->ctx);
+        i = psbctx->header_lines + psbctx->curr - base;
+        move(i, 0);
+        psbctx->cursor(i, psbctx->curr, psbctx->ctx);
+        psbctx->key = vkey();
+
+        i = PSB_NA;
+        if (psbctx->input_processor)
+            i = psbctx->input_processor(psbctx->key, psbctx->curr,
+                                        psbctx->total, rows, psbctx->ctx);
+        if (i == PSB_NA)
+            i = psb_default_input_processor(psbctx->key, psbctx->curr,
+                                            psbctx->total, rows, psbctx->ctx);
+        if (i == PSB_EOF)
+            break;
+        if (i == PSB_NOP)
+            continue;
+
+        if (i >=0 && i < psbctx->total)
+            psbctx->curr = i;
+    }
+    return 0;
+}
+
+///////////////////////////////////////////////////////////////////////////
+// View Edit History
+
+typedef struct {
+    const char *subject;
+    const char *filebase;
+} pveh_ctx;
+
+static int
+pveh_header(void *ctx) {
+    pveh_ctx *cx = (pveh_ctx*) ctx;
+    vs_hdr2barf(" 【檢視文章編輯歷史】 \t %s", cx->subject);
+    move(1, 0);
+    outs("請注意本系統不會永久保留所有的編輯歷史。");
+    outs("\n");
+    return 0;
+}
+
+static int
+pveh_footer(void *ctx) {
+    vs_footer(" 編輯歷史 ",
+              " (↑/↓/PgUp/PgDn/0-9)移動 (Enter/r/→)選擇 \t(q/←)跳出");
+    return 0;
+}
+
+static int
+pveh_cursor(int y, int curr, void *ctx) {
+    // (y, 0) before drawing
+#ifdef USE_PFTERM
+    outs("●\b");
+#else
+    cursor_show(y, 0);
+#endif
+    return 0;
+}
+
+static int
+pveh_renderer(int i, int curr, int total, int rows, void *ctx) {
+    const char *subject = "";
+    char fname[PATHLEN];
+    time4_t ftime = 0;
+    pveh_ctx *cx = (pveh_ctx*) ctx;
+
+    snprintf(fname, sizeof(fname), "%s.%03d", cx->filebase, i);
+    ftime = dasht(fname);
+    if (ftime != -1)
+        subject = Cdate(&ftime);
+    else
+        subject = "(記錄已過保留期限/已清除)";
+
+    prints("   %s%s 版本: #%08d    ",
+           (i == curr) ? ANSI_COLOR(1;41;37) : "",
+           (ftime == -1) ? ANSI_COLOR(1;30) : "",
+           i + 1);
+    prints(" 時間: %-47s" ANSI_RESET "\n", subject);
+    return 0;
+}
+
+static int
+pveh_input_processor(int key, int curr, int total, int rows, void *ctx) {
+    char fname[PATHLEN];
+    pveh_ctx *cx = (pveh_ctx*) ctx;
+
+    switch (key) {
+        case KEY_ENTER:
+        case KEY_RIGHT:
+        case 'r':
+            snprintf(fname, sizeof(fname), "%s.%03d", cx->filebase, curr);
+            more(fname, YEA);
+            return PSB_NOP;
+    }
+    return PSB_NA;
+}
+
+int
+psb_view_edit_history(const char *base, const char *subject, int max_hist) {
+    pveh_ctx pvehctx = {
+        .subject = subject,
+        .filebase = base,
+    };
+    PSB_CTX ctx = {
+        .curr = 0,
+        .total = max_hist,
+        .header_lines = 3,
+        .footer_lines = 2,
+        .ctx = (void*)&pvehctx,
+        .header = pveh_header,
+        .footer = pveh_footer,
+        .renderer = pveh_renderer,
+        .cursor = pveh_cursor,
+        .input_processor = pveh_input_processor,
+    };
+
+    // warning screen!
+    static char is_first_enter_pveh = 1;
+    if (is_first_enter_pveh) {
+        is_first_enter_pveh = 0;
+        clear();
+        move(5, 0);
+        outs(
+"  歡迎使用文章編輯歷史瀏覽系統!\n\n"
+"  提醒您: (1) 此系統尚在實驗性開放中，站方未來會決定是否繼續提供此功\能。\n\n"
+"          (2) 所有的資料僅供參考，站方不保證此處為完整的電磁記錄。\n\n"
+"          (3) 所有的資料都可能不定期由系統清除掉。\n"
+"              無編輯歷史不能代表沒有編輯過，也可能是被清除了\n\n"
+            );
+        pressanykey();
+    }
+    
+
+    psb_main(&ctx);
+    return 0;
+}
+
+///////////////////////////////////////////////////////////////////////////
+// Admin Edit
+
+// still 偷懶...
+#define MAX_PAE_ENTRIES (256)
+
+typedef struct {
+    char *descs[MAX_PAE_ENTRIES];
+    char *files[MAX_PAE_ENTRIES];
+} pae_ctx;
+
+static int
+pae_header(void *ctx) {
+    vs_hdr2bar(" 【系統檔案】 ", "  編輯系統檔案");
+    outs("請選取要編輯的檔案後按 Enter 開始修改\n");
+    vbarf(ANSI_REVERSE
+         "%5s %-36s%-30s", "編號", "名  稱", "檔  名");
+    return 0;
+}
+
+static int
+pae_footer(void *ctx) {
+    vs_footer(" 編輯系統檔案 ",
+              " (↑↓/0-9)移動 (Enter/e/r/→)編輯 (DEL/d)刪除 \t(q/←)跳出");
+    return 0;
+}
+
+static int
+pae_renderer(int i, int curr, int total, int rows, void *ctx) {
+    pae_ctx *cx = (pae_ctx*) ctx;
+    prints("  %3d %s%s%-36.36s " ANSI_COLOR(1;37) "%-30.30s" ANSI_RESET "\n", 
+            i+1,
+            (i == curr) ? ANSI_COLOR(41) : "",
+            dashf(cx->files[i]) ? ANSI_COLOR(1;36) : ANSI_COLOR(1;30),
+            cx->descs[i], cx->files[i]);
+    return 0;
+}
+
+static int
+pae_cursor(int y, int curr, void *ctx) {
+    cursor_show(y, 0);
+    return 0;
+}
+
+static int
+pae_input_processor(int key, int curr, int total, int rows, void *ctx) {
+    int result;
+    pae_ctx *cx = (pae_ctx*) ctx;
+
+    switch(key) {
+        case KEY_DEL:
+        case 'd':
+            if (vansf("確定要刪除 %s 嗎？ (y/N) ", cx->descs[curr]) == 'y')
+                unlink(cx->files[curr]);
+            vmsgf("系統檔案[%s]: %s", cx->files[curr],
+                  !dashf(cx->files[curr]) ?  "刪除成功\ " : "未刪除");
+            return PSB_NOP;
+
+        case KEY_ENTER:
+        case KEY_RIGHT:
+        case 'r':
+        case 'e':
+        case 'E':
+            result = veditfile(cx->files[curr]);
+            // log file change
+            if (result == EDIT_ABORTED)
+            {
+                log_filef("log/etc_edit.log",
+                          LOG_CREAT,
+                          "%s %s %s # %s\n",
+                          Cdate(&now),
+                          cuser.userid,
+                          cx->files[curr],
+                          cx->descs[curr]);
+            }
+            vmsgf("系統檔案[%s]: %s",
+                  cx->files[curr],
+                  (result == EDIT_ABORTED) ?  "未改變" : "更新完畢");
+            return PSB_NOP;
+    }
+    return PSB_NA;
+}
+
+int
+psb_admin_edit() {
+    int i;
+    char buf[PATHLEN*2];
+    FILE *fp;
+    pae_ctx paectx = { };
+    PSB_CTX ctx = {
+        .curr = 0,
+        .total = 0,
+        .header_lines = 4,
+        .footer_lines = 2,
+        .ctx = (void*)&paectx,
+        .header = pae_header,
+        .footer = pae_footer,
+        .renderer = pae_renderer,
+        .cursor = pae_cursor,
+        .input_processor = pae_input_processor,
+    };
+
+    fp = fopen(FN_CONF_EDITABLE, "rt");
+    if (!fp) {
+	// you can find a sample in sample/etc/editable
+	vmsgf("未設定可編輯檔案列表[%s]，請洽系統站長。", FN_CONF_EDITABLE);
+	return 0;
+    }
+
+    // load the editable file.
+    // format: filename [ \t]* description
+    while (ctx.total < MAX_PAE_ENTRIES &&
+           fgets(buf, sizeof(buf), fp)) {
+        char *k = buf, *v = buf;
+        if (!*buf || strchr("#./ \t\n\r", *buf))
+            continue;
+
+        // change \t to ' '.
+        while (*v) if (*v++ == '\t') *(v-1) = ' ';
+        v = strchr(buf, ' ');
+        if (v == NULL)
+            continue;
+
+        // see if someone is trying to crack
+        k = strstr(buf, "..");
+        if (k && k < v)
+            continue;
+
+	// reject anything outside etc/ folder.
+        if (strncmp(buf, "etc/", strlen("etc/")) != 0)
+            continue;
+
+        // adjust spaces
+        chomp(buf);
+        k = buf; *v++ = 0;
+        while (*v == ' ') v++;
+        trim(k);
+        trim(v);
+
+        // add into context
+        paectx.files[ctx.total] = strdup(k);
+        paectx.descs[ctx.total] = strdup(v);
+        ctx.total++;
+    }
+
+    psb_main(&ctx);
+
+    for (i = 0; i < ctx.total; i++) {
+        free(paectx.files[i]);
+        free(paectx.descs[i]);
+    }
+    return 0;
+}
+