Diferencia entre revisiones de «Usuario:Lmorillas/desarrollo web servidor/python cgi»
De WikiEducator
| Línea 45: | Línea 45: | ||
</source> | </source> | ||
|Title=Configuración del servidor | |Title=Configuración del servidor | ||
| + | }} | ||
| + | |||
| + | {{Conocimiento previo| | ||
| + | <source lang="html4strict"> | ||
| + | <form enctype="multipart/form-data" | ||
| + | action="save_file.py" method="post"> | ||
| + | <p>File: <input type="file" name="filename" /></p> | ||
| + | <p><input type="submit" value="Upload" /></p> | ||
| + | </form> | ||
| + | </source> | ||
| + | <source lang="python"> | ||
| + | #!/usr/bin/python | ||
| + | |||
| + | import cgi, os | ||
| + | import cgitb; cgitb.enable() | ||
| + | |||
| + | form = cgi.FieldStorage() | ||
| + | |||
| + | # Get filename here. | ||
| + | fileitem = form['filename'] | ||
| + | |||
| + | # Test if the file was uploaded | ||
| + | if fileitem.filename: | ||
| + | # strip leading path from file name to avoid | ||
| + | # directory traversal attacks | ||
| + | fn = os.path.basename(fileitem.filename) | ||
| + | open('/tmp/' + fn, 'wb').write(fileitem.file.read()) | ||
| + | |||
| + | message = 'The file "' + fn + '" was uploaded successfully' | ||
| + | |||
| + | else: | ||
| + | message = 'No file was uploaded' | ||
| + | |||
| + | print """\ | ||
| + | Content-Type: text/html\n | ||
| + | <html> | ||
| + | <body> | ||
| + | <p>%s</p> | ||
| + | </body> | ||
| + | </html> | ||
| + | """ % (message,) | ||
| + | </source> | ||
| + | |Title=Subir un archivo | ||
}} | }} | ||
Revisión de 10:53 18 oct 2013
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(Cap. 4 de Real Python for the Web, de Michael Herman)
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Tip:
- Para los ejercicios usaremos CGIHTTPServer
python -m CGIHTTPServer
- Los programas cgi estarán en un subdirectorio cgi-bin
- Esos programas tienen que estar identificados como programas python
#!/usr/bin/env python
- Tienen que tener permisos de ejecución
$ chmos +x <programa_cgi.py>
#!/usr/bin/env python import BaseHTTPServer import CGIHTTPServer import cgitb; cgitb.enable() ## Para mostrar errores CGI server = BaseHTTPServer.HTTPServer handler = CGIHTTPServer.CGIHTTPRequestHandler server_address = ("", 8000) handler.cgi_directories = [""] ## En qué directorios puede haber programas CGI httpd = server(server_address, handler) httpd.serve_forever()
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<form enctype="multipart/form-data" action="save_file.py" method="post"> <p>File: <input type="file" name="filename" /></p> <p><input type="submit" value="Upload" /></p> </form> #!/usr/bin/python import cgi, os import cgitb; cgitb.enable() form = cgi.FieldStorage() # Get filename here. fileitem = form['filename'] # Test if the file was uploaded if fileitem.filename: # strip leading path from file name to avoid # directory traversal attacks fn = os.path.basename(fileitem.filename) open('/tmp/' + fn, 'wb').write(fileitem.file.read()) message = 'The file "' + fn + '" was uploaded successfully' else: message = 'No file was uploaded' print """\ Content-Type: text/html\n <html> <body> <p>%s</p> </body> </html> """ % (message,)
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