Python实现文件上传和下载

用Python开启web服务，在局域网内实现文件上传和下载功能

#!/usr/bin/env python3"""Simple HTTP Server With Upload.This module builds on http.server by implementing the standard GET
and HEAD requests in a fairly straightforward manner.see: https://gist.github.com/UniIsland/3346170
"""__version__ = "0.1"
__all__ = ["SimpleHTTPRequestHandler"]
__author__ = "bones7456"
__home_page__ = "https://gist.github.com/UniIsland/3346170"import os
import posixpath
import http.server
import socketserver
import urllib.request, urllib.parse, urllib.error
import html
import shutil
import mimetypes
import re
import argparse
import base64from io import BytesIOclass SimpleHTTPRequestHandler(http.server.BaseHTTPRequestHandler):"""Simple HTTP request handler with GET/HEAD/POST commands.This serves files from the current directory and any of itssubdirectories.  The MIME type for files is determined bycalling the .guess_type() method. And can reveive file uploadedby client.The GET/HEAD/POST requests are identical except that the HEADrequest omits the actual contents of the file."""server_version = "SimpleHTTPWithUpload/" + __version__def do_GET(self):"""Serve a GET request."""f = self.send_head()if f:self.copyfile(f, self.wfile)f.close()def do_HEAD(self):"""Serve a HEAD request."""f = self.send_head()if f:f.close()def do_POST(self):"""Serve a POST request."""r, info = self.deal_post_data()print((r, info, "by: ", self.client_address))f = BytesIO()f.write(b'<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">')f.write(b"<html>\n<title>Upload Result Page</title>\n")f.write(b"<body>\n<h2>Upload Result Page</h2>\n")f.write(b"<hr>\n")if r:f.write(b"<strong>Success:</strong>")else:f.write(b"<strong>Failed:</strong>")f.write(info.encode())f.write(("<br><a href=\"%s\">back</a>" % self.headers['referer']).encode())f.write(b"<hr><small>Powered By: bones7456, check new version at ")f.write(b"<a href=\"https://gist.github.com/UniIsland/3346170\">")f.write(b"here</a>.</small></body>\n</html>\n")length = f.tell()f.seek(0)self.send_response(200)self.send_header("Content-type", "text/html")self.send_header("Content-Length", str(length))self.end_headers()if f:self.copyfile(f, self.wfile)f.close()def deal_post_data(self):uploaded_files = []content_type = self.headers['content-type']if not content_type:return (False, "Content-Type header doesn't contain boundary")boundary = content_type.split("=")[1].encode()remainbytes = int(self.headers['content-length'])line = self.rfile.readline()remainbytes -= len(line)if not boundary in line:return (False, "Content NOT begin with boundary")while remainbytes > 0:line = self.rfile.readline()remainbytes -= len(line)fn = re.findall(r'Content-Disposition.*name="file"; filename="(.*)"', line.decode())if not fn:return (False, "Can't find out file name...")path = self.translate_path(self.path)fn = os.path.join(path, fn[0])line = self.rfile.readline()remainbytes -= len(line)line = self.rfile.readline()remainbytes -= len(line)try:out = open(fn, 'wb')except IOError:return (False, "Can't create file to write, do you have permission to write?")else:with out:                    preline = self.rfile.readline()remainbytes -= len(preline)while remainbytes > 0:line = self.rfile.readline()remainbytes -= len(line)if boundary in line:preline = preline[0:-1]if preline.endswith(b'\r'):preline = preline[0:-1]out.write(preline)uploaded_files.append(fn)breakelse:out.write(preline)preline = linereturn (True, "File '%s' upload success!" % ",".join(uploaded_files))def send_head(self):"""Common code for GET and HEAD commands.This sends the response code and MIME headers.Return value is either a file object (which has to be copiedto the outputfile by the caller unless the command was HEAD,and must be closed by the caller under all circumstances), orNone, in which case the caller has nothing further to do."""path = self.translate_path(self.path)f = Noneif os.path.isdir(path):if not self.path.endswith('/'):# redirect browser - doing basically what apache doesself.send_response(301)self.send_header("Location", self.path + "/")self.end_headers()return Nonefor index in "index.html", "index.htm":index = os.path.join(path, index)if os.path.exists(index):path = indexbreakelse:return self.list_directory(path)ctype = self.guess_type(path)try:# Always read in binary mode. Opening files in text mode may cause# newline translations, making the actual size of the content# transmitted *less* than the content-length!f = open(path, 'rb')except IOError:self.send_error(404, "File not found")return Noneself.send_response(200)self.send_header("Content-type", ctype)fs = os.fstat(f.fileno())self.send_header("Content-Length", str(fs[6]))self.send_header("Last-Modified", self.date_time_string(fs.st_mtime))self.end_headers()return fdef list_directory(self, path):"""Helper to produce a directory listing (absent index.html).Return value is either a file object, or None (indicating anerror).  In either case, the headers are sent, making theinterface the same as for send_head()."""try:list = os.listdir(path)except os.error:self.send_error(404, "No permission to list directory")return Nonelist.sort(key=lambda a: a.lower())f = BytesIO()displaypath = html.escape(urllib.parse.unquote(self.path))f.write(b'<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">')f.write(("<html>\n<title>Directory listing for %s</title>\n" % displaypath).encode())f.write(b'<style type="text/css">\n')f.write(b'a { text-decoration: none; }\n')f.write(b'a:link { text-decoration: none; font-weight: bold; color: #0000ff; }\n')f.write(b'a:visited { text-decoration: none; font-weight: bold; color: #0000ff; }\n')f.write(b'a:active { text-decoration: none; font-weight: bold; color: #0000ff; }\n')f.write(b'a:hover { text-decoration: none; font-weight: bold; color: #ff0000; }\n')f.write(b'</style>\n')f.write(("<body>\n<h2>Directory listing for %s</h2>\n" % displaypath).encode())f.write(b"<hr>\n")f.write(b"<form ENCTYPE=\"multipart/form-data\" method=\"post\">")f.write(b"<input name=\"file\" type=\"file\" multiple/>")f.write(b"<input type=\"submit\" value=\"upload\"/></form>\n")f.write(b"<hr>\n")f.write(b'<a href="../"><img src="https://img-blog.csdnimg.cn/2022010708445240670.gif" alt="[PARENTDIR]" width="24" height="24">&nbsp;&nbsp;&nbsp;Parent Directory</a><br />\n')for name in list:dirimage = 'data:image/gif;base64,R0lGODlhGAAYAMIAAP///7+/v7u7u1ZWVTc3NwAAAAAAAAAAACH+RFRoaXMgaWNvbiBpcyBpbiB0aGUgcHVibGljIGRvbWFpbi4gMTk5NSBLZXZpbiBIdWdoZXMsIGtldmluaEBlaXQuY29tACH5BAEAAAEALAAAAAAYABgAAANdGLrc/jAuQaulQwYBuv9cFnFfSYoPWXoq2qgrALsTYN+4QOg6veFAG2FIdMCCNgvBiAxWlq8mUseUBqGMoxWArW1xXYXWGv59b+WxNH1GV9vsNvd9jsMhxLw+70gAADs='fullname = os.path.join(path, name)displayname = linkname = name# Append / for directories or @ for symbolic linksif os.path.isdir(fullname):dirimage = 'data:image/gif;base64,R0lGODlhGAAYAMIAAP///+jNlr+/v6KXfm5SG2lPGjc3NwAAACH+RFRoaXMgaWNvbiBpcyBpbiB0aGUgcHVibGljIGRvbWFpbi4gMTk5NSBLZXZpbiBIdWdoZXMsIGtldmluaEBlaXQuY29tACH5BAEAAAIALAAAAAAYABgAAANjKLrc/jDKSau9WJbN9y1BKIZFVQzjOHRdsw1wDIMpyYAFke9ELa4Lmm9IWBkUwqHPiFQSmYKkU1U4Rqe1YrWJTUGlWK0VjP12R2Jubx1guwPQqGxOj22DrLzeujD4/4CBgAoJADs='displayname = name + "/"linkname = name + "/"if os.path.islink(fullname):dirimage = 'data:image/gif;base64,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'displayname = name + "@"if name.endswith(('.bmp','.gif','.jpg','.png')):dirimage = nameif name.endswith(('.avi','.mpg')):dirimage = 'data:image/gif;base64,R0lGODlhGAAYAMIAAP///7+/v7u7u1ZWVTc3NwAAAAAAAAAAACH+RFRoaXMgaWNvbiBpcyBpbiB0aGUgcHVibGljIGRvbWFpbi4gMTk5NSBLZXZpbiBIdWdoZXMsIGtldmluaEBlaXQuY29tACH5BAEAAAEALAAAAAAYABgAAANvGLrc/jAuQqu99BEh8OXE4GzdYJ4mQIZjNXAwp7oj+MbyKjY6ntstyg03E9ZKPoEKyLMll6UgAUCtVi07xspTYWptqBOUxXM9scfQ2Ttx+sbZifmNbiLpbEUPHy1TrIB1Xx1cFHkBW4VODmGNjQ4JADs='if name.endswith(('.idx','.srt','.sub')):dirimage = 'data:image/gif;base64,R0lGODlhGAAYAPf/AAAbDiAfDSoqHjQlADs+J3sxJ0BALERHMk5LN1pSPUZHRk9NQU1OR05ZUFBRRFVXTVdYTVtVQFlVRFtbSF5bTVZWUltbUFlZVFtcVlxdWl5eWl1gWmBiV2FiXWNhXGRjXWlpYmtqZ2xtZmxsaG5ubHJva3Jzb3J0bHN0b3Z5dHd8eXh4dX18dXx/dnt8e31+eahMP4JdWIdnZox4cpVoYKJkXrxqablwcNA6Otg7O/8AAPwHB/0GBvgODvsMDPMbG/ceHvkSEuYqKvYqKvU2NvM6OvQ6OsFQUNVbW8N4eNd0duNeXu9aWvFUVOVqau1jY+1mZu5mZuh5eYSFgIWGgYaFgIiGgYqKiY6LioyMiY2NiYyMio2OiI6OjZCSjZSQi5OSkJGUkpSVk5WVlJWVlZiZlpiZmJ6emp2dnZSko6GhnKGhoKOjoaKnoqSkpKSmpKWmpaampqqrqKurqKqrqq2sqq6urrSyrrCwsLa3tb63tbi4t7q6ur+/vsCbm96Li9iUlMqursmwr9KwsN69veSCguiMjOiOjuaQkOWVleaXmOGfn+aYmOaamuebm+adneecnOeenuiQkOWgoOWsrOasrOWxseW2tue3t+e8vOi+vsHBwcfHx8jIxs7Mx8nJyMvLy8zMy83NzM7Pzs/Pz9PR0dTU1NXV1dXW1tbW1tfX19bb29jY2NnZ2djb29ra2tvb2tvb29za2tzc3N3d3d7e3t/f3+bCwufDw+fGxuTJyejCwujHx+nHx+vPz+rT0+rU1OrX1+vX1+rY2Ojf3+Hh4eLi4uPj4+Hn5+Tk5OXl5ebm5ufn5+nn5+jo6Onp6erp6evr6+zs7PDn5/Dq6vDt7fHv7/Lu7vPu7vPv7/Dw8PHx8fLy8vPz8/Tx8fbz8/T09PX19fX39/b29vj39/j4+Pn4+Pn5+fr5+fr6+vv7+/z7+/z8/P39/f7+/v/+/v///wAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACwAAAAAGAAYAAAI/wDhCRxIsKDBgwgTZis00F27hAbRNSpSaSC7ZM6ePQsXjdmzZekKUpOio0lBVShjJXvYjp07gsEm/dLhqKC2aNG2LesES13BXJTg4dLBi2C7kPDSyQFTRY26c8akZbolkJGOaQTZFTO2LA8KCCA+zDFTp4aggVCCmCtYrJUxNiI4nAjh4o2HGW1CrhvCxGC5cOVqvcCgQQUWGRtanOkG75qOQwXbhWvZ7lOZMIGSsJjihY5AYTowFWRnipUtT6BGWIARY8IXPc1eXtIxrKC7cqJCjdJCIcIBAwRoaLqU6IkRHthGnwPzoEGKDBISMHDAZWAvHUTWjaa1J42NAgAELMBAMGCNwHbWekQxqA4VMkBKSokZE8AKtHLpjuHxo0OSQXfuLKJIOHdc0IECFaxgQivpxHGDDpYc9McS5oBTAhxUbNHFFX2I4Q4fR+iwi0GPCCGLK6rYgQYJWZDhBil7cMMJDjpAAg85L8ETCRDVqAONMuGMA0446rDjEzzi5KDDD4j48g48huxAyCqtODNZOeWcM85DAxEDzDcE+YDEK5u0EostbZ2SyizsQASPE4PAo4466TxVZzptuqmLN266GRAAOw=='if name.endswith('.iso'):dirimage = 'data:image/gif;base64,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'# Note: a link to a directory displays with @ and links with /f.write(('<a href="%s"><img src="%s" width="24" height="24">&nbsp;&nbsp;&nbsp;%s</a><br />\n'% (urllib.parse.quote(linkname), dirimage , html.escape(displayname))).encode())f.write(b"<hr>\n</body>\n</html>\n")length = f.tell()f.seek(0)self.send_response(200)self.send_header("Content-type", "text/html")self.send_header("Content-Length", str(length))self.end_headers()return fdef translate_path(self, path):"""Translate a /-separated PATH to the local filename syntax.Components that mean special things to the local file system(e.g. drive or directory names) are ignored.  (XXX They shouldprobably be diagnosed.)"""# abandon query parameterspath = path.split('?',1)[0]path = path.split('#',1)[0]path = posixpath.normpath(urllib.parse.unquote(path))words = path.split('/')words = [_f for _f in words if _f]path = os.getcwd()for word in words:drive, word = os.path.splitdrive(word)head, word = os.path.split(word)if word in (os.curdir, os.pardir): continuepath = os.path.join(path, word)return pathdef copyfile(self, source, outputfile):"""Copy all data between two file objects.The SOURCE argument is a file object open for reading(or anything with a read() method) and the DESTINATIONargument is a file object open for writing (oranything with a write() method).The only reason for overriding this would be to changethe block size or perhaps to replace newlines by CRLF-- note however that this the default server uses thisto copy binary data as well."""shutil.copyfileobj(source, outputfile)def guess_type(self, path):"""Guess the type of a file.Argument is a PATH (a filename).Return value is a string of the form type/subtype,usable for a MIME Content-type header.The default implementation looks the file's extensionup in the table self.extensions_map, using application/octet-streamas a default; however it would be permissible (ifslow) to look inside the data to make a better guess."""base, ext = posixpath.splitext(path)if ext in self.extensions_map:return self.extensions_map[ext]ext = ext.lower()if ext in self.extensions_map:return self.extensions_map[ext]else:return self.extensions_map['']if not mimetypes.inited:mimetypes.init() # try to read system mime.typesextensions_map = mimetypes.types_map.copy()extensions_map.update({'': 'application/octet-stream', # Default'.py': 'text/plain','.c': 'text/plain','.h': 'text/plain',})parser = argparse.ArgumentParser()
parser.add_argument('--bind', '-b', default='', metavar='ADDRESS',help='Specify alternate bind address ''[default: all interfaces]')
parser.add_argument('port', action='store',default=8000, type=int,nargs='?',help='Specify alternate port [default: 8000]')
args = parser.parse_args()PORT = args.port
BIND = args.bind
HOST = BINDif HOST == '':HOST = 'localhost'Handler = SimpleHTTPRequestHandlerwith socketserver.TCPServer((BIND, PORT), Handler) as httpd:serve_message = "Serving HTTP on {host} port {port} (http://{host}:{port}/) ..."print(serve_message.format(host=HOST, port=PORT))httpd.serve_forever()

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