改造

修改http.server.SimpleHTTPRequestHandler，实现简单的文件上传下载服务

 simple_http_file_server.py：

# !/usr/bin/env python3

import datetime
import email
import html
import http.server
import io
import mimetypes
import os
import posixpath
import re
import shutil
import sys
import urllib.error
import urllib.parse
import urllib.request
import socket
from http import HTTPStatus
 
__version__ = "0.1"
__all__ = ["MySimpleHTTPRequestHandler"]
 
class MySimpleHTTPRequestHandler(http.server.BaseHTTPRequestHandler):
    server_version = "SimpleHTTP/" + __version__
    extensions_map = _encodings_map_default = {
        '.gz': 'application/gzip',
        '.Z': 'application/octet-stream',
        '.bz2': 'application/x-bzip2',
        '.xz': 'application/x-xz',
    }
 
    def __init__(self, *args, directory=None, **kwargs):
        if directory is None:
            directory = os.getcwd()
        self.directory = os.fspath(directory)
        super().__init__(*args, **kwargs)
 
    def do_GET(self):
        f = self.send_head()
        if f:
            try:
                self.copyfile(f, self.wfile)
            finally:
                f.close()
 
    def do_HEAD(self):
        f = self.send_head()
        if f:
            f.close()
 
    def send_head(self):
        path = self.translate_path(self.path)
        f = None
        if os.path.isdir(path):
            parts = urllib.parse.urlsplit(self.path)
            if not parts.path.endswith('/'):
                # redirect browser - doing basically what apache does
                self.send_response(HTTPStatus.MOVED_PERMANENTLY)
                new_parts = (parts[0], parts[1], parts[2] + '/',
                             parts[3], parts[4])
                new_url = urllib.parse.urlunsplit(new_parts)
                self.send_header("Location", new_url)
                self.end_headers()
                return None
            for index in "index.html", "index.htm":
                index = os.path.join(path, index)
                if os.path.exists(index):
                    path = index
                    break
            else:
                return self.list_directory(path)
 
        ctype = self.guess_type(path)
        if path.endswith("/"):
            self.send_error(HTTPStatus.NOT_FOUND, "File not found")
            return None
        try:
            f = open(path, 'rb')
        except OSError:
            self.send_error(HTTPStatus.NOT_FOUND, "File not found")
            return None
        try:
            fs = os.fstat(f.fileno())
            # Use browser cache if possible
            if ("If-Modified-Since" in self.headers
                    and "If-None-Match" not in self.headers):
                # compare If-Modified-Since and time of last file modification
                try:
                    ims = email.utils.parsedate_to_datetime(self.headers["If-Modified-Since"])
                except (TypeError, IndexError, OverflowError, ValueError):
                    # ignore ill-formed values
                    pass
                else:
                    if ims.tzinfo is None:
                        # obsolete format with no timezone, cf.
                        # https://tools.ietf.org/html/rfc7231#section-7.1.1.1
                        ims = ims.replace(tzinfo=datetime.timezone.utc)
                    if ims.tzinfo is datetime.timezone.utc:
                        # compare to UTC datetime of last modification
                        last_modif = datetime.datetime.fromtimestamp(
                            fs.st_mtime, datetime.timezone.utc)
                        # remove microseconds, like in If-Modified-Since
                        last_modif = last_modif.replace(microsecond=0)
 
                        if last_modif <= ims:
                            self.send_response(HTTPStatus.NOT_MODIFIED)
                            self.end_headers()
                            f.close()
                            return None
 
            self.send_response(HTTPStatus.OK)
            self.send_header("Content-type", ctype)
            self.send_header("Content-Length", str(fs[6]))
            self.send_header("Last-Modified",
                             self.date_time_string(fs.st_mtime))
            self.end_headers()
            return f
        except:
            f.close()
            raise
 
    def list_directory(self, path):
        try:
            list_dir = os.listdir(path)
        except OSError:
            self.send_error(HTTPStatus.NOT_FOUND, "No permission to list_dir directory")
            return None
        list_dir.sort(key=lambda a: a.lower())
        r = []
        try:
            display_path = urllib.parse.unquote(self.path, errors='surrogatepass')
        except UnicodeDecodeError:
            display_path = urllib.parse.unquote(path)
        display_path = html.escape(display_path, quote=False)
        enc = sys.getfilesystemencoding()
 
        form = """
            <h1>文件上传</h1>\n
            <form ENCTYPE="multipart/form-data" method="post">\n
                <input name="file" type="file"/>\n
                <input type="submit" value="upload"/>\n
            </form>\n"""
        title = 'Directory listing for %s' % display_path
        r.append('<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" '
                 '"http://www.w3.org/TR/html4/strict.dtd">')
        r.append('<html>\n<head>')
        r.append('<meta http-equiv="Content-Type" '
                 'content="text/html; charset=%s">' % enc)
        r.append('<title>%s</title>\n</head>' % title)
        r.append('<body>%s\n<h1>%s</h1>' % (form, title))
        r.append('<hr>\n<ul>')
        for name in list_dir:
            fullname = os.path.join(path, name)
            displayname = linkname = name
            # Append / for directories or @ for symbolic links
            if os.path.isdir(fullname):
                displayname = name + "/"
                linkname = name + "/"
            if os.path.islink(fullname):
                displayname = name + "@"
                # Note: a link to a directory displays with @ and links with /
            r.append('<li><a href="%s">%s</a></li>' % (urllib.parse.quote(linkname, errors='surrogatepass'),
                                                       html.escape(displayname, quote=False)))
        r.append('</ul>\n<hr>\n</body>\n</html>\n')
        encoded = '\n'.join(r).encode(enc, 'surrogate escape')
        f = io.BytesIO()
        f.write(encoded)
        f.seek(0)
        self.send_response(HTTPStatus.OK)
        self.send_header("Content-type", "text/html; charset=%s" % enc)
        self.send_header("Content-Length", str(len(encoded)))
        self.end_headers()
        return f
 
    def translate_path(self, path):
        # abandon query parameters
        path = path.split('?', 1)[0]
        path = path.split('#', 1)[0]
        # Don't forget explicit trailing slash when normalizing. Issue17324
        trailing_slash = path.rstrip().endswith('/')
        try:
            path = urllib.parse.unquote(path, errors='surrogatepass')
        except UnicodeDecodeError:
            path = urllib.parse.unquote(path)
        path = posixpath.normpath(path)
        words = path.split('/')
        words = filter(None, words)
        path = self.directory
        for word in words:
            if os.path.dirname(word) or word in (os.curdir, os.pardir):
                # Ignore components that are not a simple file/directory name
                continue
            path = os.path.join(path, word)
        if trailing_slash:
            path += '/'
        return path
 
    def copyfile(self, source, outputfile):
        shutil.copyfileobj(source, outputfile)
 
    def guess_type(self, path):
        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]
        guess, _ = mimetypes.guess_type(path)
        if guess:
            return guess
        return 'application/octet-stream'
 
    def do_POST(self):
        r, info = self.deal_post_data()
        self.log_message('%s, %s => %s' % (r, info, self.client_address))
        enc = sys.getfilesystemencoding()
        res = [
            '<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" '
            '"http://www.w3.org/TR/html4/strict.dtd">',
            '<html>\n<head>',
            '<meta http-equiv="Content-Type" content="text/html; charset=%s">' % enc,
            '<title>%s</title>\n</head>' % "Upload Result Page",
            '<body><h1>%s</h1>\n' % "Upload Result"
        ]
        if r:
            res.append('<p>SUCCESS: %s</p>\n' % info)
        else:
            res.append('<p>FAILURE: %s</p>' % info)
        res.append('<a href=\"%s\">back</a>' % self.headers['referer'])
        res.append('</body></html>')
        encoded = '\n'.join(res).encode(enc, 'surrogate escape')
        f = io.BytesIO()
        f.write(encoded)
        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):
        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()
        remain_bytes = int(self.headers['content-length'])
        line = self.rfile.readline()
        remain_bytes -= len(line)
        if boundary not in line:
            return False, "Content NOT begin with boundary"
        line = self.rfile.readline()
        remain_bytes -= 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()
        remain_bytes -= len(line)
        line = self.rfile.readline()
        remain_bytes -= len(line)
        try:
            out = open(fn, 'wb')
        except IOError:
            return False, "Can't create file to write, do you have permission to write?"
 
        preline = self.rfile.readline()
        remain_bytes -= len(preline)
        while remain_bytes > 0:
            line = self.rfile.readline()
            remain_bytes -= len(line)
            if boundary in line:
                preline = preline[0:-1]
                if preline.endswith(b'\r'):
                    preline = preline[0:-1]
                out.write(preline)
                out.close()
                return True, "File '%s' upload success!" % fn
            else:
                out.write(preline)
                preline = line
        return False, "Unexpect Ends of data."
 

def _get_best_family(*address):
    infos = socket.getaddrinfo(
        *address,
        type=socket.SOCK_STREAM,
        flags=socket.AI_PASSIVE,
    )
    family, type, proto, canonname, sockaddr = next(iter(infos))
    return family, sockaddr


def doserver(HandlerClass=http.server.BaseHTTPRequestHandler,
         ServerClass=http.server.ThreadingHTTPServer,
         protocol="HTTP/1.0", port=8000, bind=None):
    """Test the HTTP request handler class.

    This runs an HTTP server on port 8000 (or the port argument).

    """
    ServerClass.address_family, addr = _get_best_family(bind, port)
    HandlerClass.protocol_version = protocol
    with ServerClass(addr, HandlerClass) as httpd:
        host, port = httpd.socket.getsockname()[:2]
        url_host = f'[{host}]' if ':' in host else host
        print(
            f"Serving HTTP on {host} port {port} "
            f"(http://{url_host}:{port}/) ..."
        )
        try:
            httpd.serve_forever()
        except KeyboardInterrupt:
            print("\nKeyboard interrupt received, exiting.")
            sys.exit(0)
 
if __name__ == '__main__':
    import argparse
    import contextlib

    parser = argparse.ArgumentParser()
    parser.add_argument('--bind', '-b', metavar='ADDRESS',
                        help='specify alternate bind address '
                             '(default: all interfaces)')
    parser.add_argument('--directory', '-d', default=os.getcwd(),
                        help='specify alternate directory '
                             '(default: current directory)')
    parser.add_argument('port', action='store', default=8000, type=int,
                        nargs='?',
                        help='specify alternate port (default: 8000)')
    args = parser.parse_args()
    handler_class = MySimpleHTTPRequestHandler
        

    # ensure dual-stack is not disabled; ref #38907
    class DualStackServer(http.server.ThreadingHTTPServer):

        def server_bind(self):
            # suppress exception when protocol is IPv4
            with contextlib.suppress(Exception):
                self.socket.setsockopt(
                    socket.IPPROTO_IPV6, socket.IPV6_V6ONLY, 0)
            return super().server_bind()

        def finish_request(self, request, client_address):
            self.RequestHandlerClass(request, client_address, self,
                                     directory=args.directory)

    doserver(
        HandlerClass=handler_class,
        ServerClass=DualStackServer,
        port=args.port,
        bind=args.bind,
    )
    

使用帮助：

>python3 simple_http_file_server.py --help              
usage: simple_http_file_server.py [-h] [--cgi] [--bind ADDRESS] [--directory DIRECTORY] [port]

positional arguments:
  port                  specify alternate port (default: 8000)

optional arguments:
  -h, --help            show this help message and exit
  --cgi                 run as CGI server
  --bind ADDRESS, -b ADDRESS
                        specify alternate bind address (default: all interfaces)
  --directory DIRECTORY, -d DIRECTORY
                        specify alternate directory (default: current directory)

使用示例：

>python3 simple_http_file_server.py -d ~ 12345
Serving HTTP on :: port 12345 (http://[::]:12345/) ...
::ffff:127.0.0.1 - - [30/Nov/2023 09:35:06] "GET / HTTP/1.1" 200 -

。。。

访问：

浏览器中访问：http://127.0.0.1:12345/

参考：

        Python3 实现简单HTTP服务器（附带文件上传）_python3 -m http.server-CSDN博客