Python简单CGI服务器os.execve(scriptfile,args,os.environ)权限错误

01 January 2010

这段时间在学Python，今天开始进入到CGI编程，示例中有个简单CGI Server的例子，代码如下：

webserver.py:

webdir = "."    #html files directory
port = 8000    ＃server port
import os, sys
from BaseHTTPServer import HTTPServer
from CGIHTTPServer import CGIHTTPRequestHandler
if sys.platform[:3] == "win":
    CGIHTTPRequestHandler.have_popen2 = False
    CGIHTTPRequestHandler.have_popen3 = False
os.chdir(webdir)
srvraddr = ("", port)
srvrobj = HTTPServer(srvraddr, CGIHTTPRequestHandler)
srvrobj.serve_forever()

页面CGI为cgi101.py:

#!/usr/bin/python
import cgi
form = cgi.FieldStorage()
print "Content-type: text/html/n"
print "<title>Reply Page</title>"
if not form.has_key("username"):
    print "<h1>Who are you?</h1>"
else:
    print "<h1>Hello <i>%s</i>!</h1>" % cgi.escape(form['username'].value)

HTML页面为：

<html>
    <title>Interactive Page</title>
    <body>
        <form method="post" action="cgi-bin/cgi101.py">
            <p><b>Enter your name:</b></p>
            <p>Username:<input type="text" name="username"/></p>
            <p>Password:<input type="password" name="pwd"/></p>
            <input type="submit" name="submit" text="submit"/>
        </form>
</html>

先运行webserver.py（我是在Ubuntu上，用sudo python webserver.py)启动了server，然后在Firefox中访问：http://localhost:8000/cgi101.html

结果Firefox中弹出下载cgi101.py脚本的对话框，而不是运行cgi返回结果，server终端中显示：

localhost - - [01/Jan/2010 17:05:32] "GET /cgi-bin/cgi101.py?username=Jone HTTP/1.1" 200 -
Traceback (most recent call last):
  File "/usr/lib/python2.6/CGIHTTPServer.py", line 255, in run_cgi
    os.execve(scriptfile, args, os.environ)
OSError: [Errno 13] Permission denied

说明os.execve权限出问题了，解决方法如下，将cgi101.py的权限设为777，如果还是不行的话，要将整个cgi目录的权限设为777(例如，本例中使用命令chmod -R 777 cgi-bin)

然后就可以了。

Good Luck!

PS: Happy New Year !

Python 1

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Python简单CGI服务器os.execve(scriptfile,args,os.environ)权限错误