掲示板
#! /usr/bin/python
# coding: UTF-8
import cgi
import fcntl
import time
import re
#================================================ 設定
FILE = './dat/bbs.dat' # 書き込み保存ファイル
MAX = 100 # 保存件数
VIEW = 10 # １ページの表示件数
TEXTMAX = 1000 # 本文文字数制限（全角）
NAMEMAX = 10 # 名前文字数制限（全角）
TITLEMAX = 20 # 題名文字数制限（全角）
PASSWORD = '1234' # 削除用パスワード
#================================================ 関数定義
def read_log():
log = []
f = open(FILE)
fcntl.flock(f.fileno(), fcntl.LOCK_SH)
for line in f:
log.append(line.rstrip("\n"))
fcntl.flock(f.fileno(), fcntl.LOCK_UN)
f.close()
return log
def write_log():
tm = time.time()
data = "\t".join([str(tm), FORM['name'], FORM['title'], FORM['text'], ""])
LOG.insert(0, data)
while len(LOG) > MAX:
LOG.pop()
f = open(FILE, "w")
fcntl.flock(f.fileno(), fcntl.LOCK_EX)
f.write("\n".join(LOG))
fcntl.flock(f.fileno(), fcntl.LOCK_UN)
f.close()
def delete_log():
no = int(FORM['del'])
del LOG[no]
f = open(FILE, "w")
fcntl.flock(f.fileno(), fcntl.LOCK_EX)
f.write("\n".join(LOG))
fcntl.flock(f.fileno(), fcntl.LOCK_UN)
f.close()
def print_log():
page = int(FORM['page'])
begin = page * VIEW
end = begin + VIEW
loglen = len(LOG)
if end > loglen:
end = loglen
for i in range(begin, end):
tm, name, title, text, hid = re.split("\t", LOG[i], 4)
if name == "":
name = "名無し"
if title == "":
title = "無題"
print """
<input type="radio" name="del" value="%0d">
【%s】%s<br>
%s
<div align=\"right\">%s</div>
<hr>
""" % (i, title, name, text, time.ctime(float(tm)))
print "<center>"
if begin > 0:
print """<a href="?page=%d">≪前ページ</a>""" % (page - 1)
if end < loglen:
print """<a href="?page=%d">次ページ≫</a>""" % (page + 1)
print "</center>"
def get_form():
CGI = cgi.FieldStorage()
form = {}
for k in ['mode', 'pass', 'name', 'title', 'text']:
form[k] = ""
for k in ['page']:
form[k] = "0"
for k in CGI.keys():
form[k] = CGI.getvalue(k, "")
form[k] = cgi.escape(form[k])
form[k] = re.sub("\x0D\x0A\s*", "<br>", form[k])
form[k] = re.sub("\s+", " ", form[k])
return form
#================================================ メインプログラム
FORM = get_form()
LOG = read_log()
#サンプルにつき書き込み停止
#if FORM['mode'] == "write"\
# and FORM['text'] != ""\
# and len(FORM['name']) <= NAMEMAX * 2\
# and len(FORM['title']) <= TITLEMAX * 2\
# and len(FORM['text']) <= TEXTMAX * 2:
# write_log()
#elif FORM['mode'] == "delete" and FORM['pass'] == PASSWORD:
# delete_log()
print "Content-type: text/html; charset=UTF-8"
print """
<html>
<head>
<title>掲示板</title>
</head>
<body bgcolor="#ffccff">
<h1 style="margin:2px;font-size:15px;letter-spacing:50px">掲示板</h1>
<hr>
<form action="" method="POST">
名前：<input type="text" name="name" size="50" maxlength="%d" value="%s"><br>
<br>
題名：<input type="text" name="title" size="50" maxlength="%d"><br>
<br>
本文： <small>※全角%d文字以内</small><br>
<textarea name="text" rows="10" cols="80"></textarea><br>
<br>
<input type="hidden" name="mode" value="write">
<input type="submit" value=" 書き込み "><br>
</form>
<form action="" method="POST">
<hr>
""" % (NAMEMAX, FORM['name'], TITLEMAX, TEXTMAX)
print_log()
print """
<div align="right">
<input type="password" name="pass" value="%s" size="4">
<input type="hidden" name="mode" value="delete">
<input type="hidden" name="page" value="%s">
<input type="submit" value="削除">
</div>
</form>
</body>
</html>
""" % (FORM['pass'], FORM['page'])
〔 実行する 〕