X-Git-Url: https://git.rapsys.eu/youtubedl/blobdiff_plain/45ea099fd5d7f239294d8fff875ac509c45bea40..690f55171cdca5bfd447e32e45ec5df39c5dfd6a:/youtube-dl

diff --git a/youtube-dl b/youtube-dl
index 84b3f8e..6d53fa3 100755
--- a/youtube-dl
+++ b/youtube-dl
@@ -25,37 +25,35 @@
 # sale, use or other dealings in this Software without prior written
 # authorization.
 #
-import sys
-import optparse
+import getpass
 import httplib
-import urllib2
+import netrc
+import optparse
+import os
 import re
-
-# First off, check Python and refuse to run
-if sys.hexversion < 0x020400f0:
-	sys.exit('Error: Python 2.4 or later needed to run the program')
-
-# Exit status constants
-exit_failure = 1
-exit_success = 0
+import socket
+import string
+import sys
+import time
+import urllib2
 
 # Global constants
 const_video_url_str = 'http://www.youtube.com/watch?v=%s'
-const_video_url_re = re.compile(r'http://(?:www\.)?youtube\.com/(?:v/|(?:watch(?:\.php)?)?\?v=)([^&]+).*')
-const_login_url_str = 'http://www.youtube.com/signup?next=/'
-const_login_post_str = 'current_form=loginForm&next=%%2F&username=%s&password=%s&action_login=Log+In'
+const_video_url_re = re.compile(r'(?:http://)?(?:www\d*\.)?youtube\.com/(?:v/|(?:watch(?:\.php)?)?\?v=)([^&]+).*')
+const_login_url_str = 'http://www.youtube.com/login?next=/watch%%3Fv%%3D%s'
+const_login_post_str = 'current_form=loginForm&next=%%2Fwatch%%3Fv%%3D%s&username=%s&password=%s&action_login=Log+In'
 const_age_url_str = 'http://www.youtube.com/verify_age?next_url=/watch%%3Fv%%3D%s'
 const_age_post_str = 'next_url=%%2Fwatch%%3Fv%%3D%s&action_confirm=Confirm'
 const_video_url_params_re = re.compile(r'player2\.swf\?([^"]+)"', re.M)
 const_video_url_real_str = 'http://www.youtube.com/get_video?%s'
+const_video_title_re = re.compile(r'<title>YouTube - ([^<]*)</title>', re.M | re.I)
 const_1k = 1024
-const_block_size = 10 * const_1k
+const_initial_block_size = 10 * const_1k
 
 # Print error message, followed by standard advice information, and then exit
 def error_advice_exit(error_text):
-	global exit_failure
 	sys.stderr.write('Error: %s.\n' % error_text)
-	sys.stderr.write('Try again several times. It may be a temporal problem.\n')
+	sys.stderr.write('Try again several times. It may be a temporary problem.\n')
 	sys.stderr.write('Other typical problems:\n\n')
 	sys.stderr.write('\tVideo no longer exists.\n')
 	sys.stderr.write('\tVideo requires age confirmation but you did not provide an account.\n')
@@ -66,15 +64,15 @@ def error_advice_exit(error_text):
 	sys.stderr.write('Use the same video URL and account information, if needed, with this program.\n')
 	sys.stderr.write('When using a proxy, make sure http_proxy has http://host:port format.\n')
 	sys.stderr.write('Try again several times and contact me if the problem persists.\n')
-	sys.exit(exit_failure)
+	sys.exit('\n')
 
 # Wrapper to create custom requests with typical headers
 def request_create(url, data=None):
 	retval = urllib2.Request(url)
-	if not data is None:
+	if data is not None:
 		retval.add_data(data)
 	# Try to mimic Firefox, at least a little bit
-	retval.add_header('User-Agent', 'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.0.6) Gecko/20060728 Firefox/1.5.0.6')
+	retval.add_header('User-Agent', 'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1) Gecko/20061010 Firefox/2.0')
 	retval.add_header('Accept-Charset', 'ISO-8859-1,utf-8;q=0.7,*;q=0.7')
 	retval.add_header('Accept', 'text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5')
 	retval.add_header('Accept-Language', 'en-us,en;q=0.5')
@@ -98,9 +96,64 @@ def cond_print(str):
 		sys.stdout.write(str)
 		sys.stdout.flush()
 
+# Title string normalization
+def title_string_norm(title):
+	title = ''.join((x in string.ascii_letters or x in string.digits) and x or ' ' for x in title)
+	title = '_'.join(title.split())
+	title = title.lower()
+	return title
+
+# Generic download step
+def download_step(return_data_flag, step_title, step_error, url, post_data=None):
+	try:
+		cond_print('%s... ' % step_title)
+		data = perform_request(url, post_data).read()
+		cond_print('done.\n')
+		if return_data_flag:
+			return data
+		return None
+
+	except (urllib2.URLError, ValueError, httplib.HTTPException, TypeError, socket.error):
+		cond_print('failed.\n')
+		error_advice_exit(step_error)
+
+	except KeyboardInterrupt:
+		sys.exit('\n')
+
+# Generic extract step
+def extract_step(step_title, step_error, regexp, data):
+	try:
+		cond_print('%s... ' % step_title)
+		match = regexp.search(data)
+		
+		if match is None:
+			cond_print('failed.\n')
+			error_advice_exit(step_error)
+		
+		extracted_data = match.group(1)
+		cond_print('done.\n')
+		return extracted_data
+	
+	except KeyboardInterrupt:
+		sys.exit('\n')
+
+# Calculate new block size based on previous block size
+def new_block_size(before, after, bytes):
+	new_min = max(bytes / 2, 1)
+	new_max = max(bytes * 2, 1)
+	dif = after - before
+	if dif < 0.0001:
+		return new_max
+	rate = int(bytes / dif)
+	if rate > new_max:
+		return new_max
+	if rate < new_min:
+		return new_min
+	return rate
+
 # Create the command line options parser and parse command line
 cmdl_usage = 'usage: %prog [options] video_url'
-cmdl_version = '2006.09.25'
+cmdl_version = '2007.02.18'
 cmdl_parser = optparse.OptionParser(usage=cmdl_usage, version=cmdl_version, conflict_handler='resolve')
 cmdl_parser.add_option('-h', '--help', action='help', help='print this help text and exit')
 cmdl_parser.add_option('-v', '--version', action='version', help='print program version and exit')
@@ -109,12 +162,14 @@ cmdl_parser.add_option('-p', '--password', dest='password', metavar='PASSWORD',
 cmdl_parser.add_option('-o', '--output', dest='outfile', metavar='FILE', help='output video file name')
 cmdl_parser.add_option('-q', '--quiet', action='store_true', dest='quiet', help='activates quiet mode')
 cmdl_parser.add_option('-s', '--simulate', action='store_true', dest='simulate', help='do not download video')
+cmdl_parser.add_option('-t', '--title', action='store_true', dest='use_title', help='use title in file name')
+cmdl_parser.add_option('-n', '--netrc', action='store_true', dest='use_netrc', help='use .netrc authentication data')
 (cmdl_opts, cmdl_args) = cmdl_parser.parse_args()
 
 # Get video URL
 if len(cmdl_args) != 1:
 	cmdl_parser.print_help()
-	sys.exit(exit_failure)
+	sys.exit('\n')
 video_url_cmdl = cmdl_args[0]
 
 # Verify video URL format and convert to "standard" format
@@ -125,9 +180,53 @@ video_url_id = video_url_mo.group(1)
 video_url = const_video_url_str % video_url_id
 
 # Check conflicting options
-if not cmdl_opts.outfile is None and cmdl_opts.simulate:
+if cmdl_opts.outfile is not None and cmdl_opts.simulate:
 	sys.stderr.write('Warning: video file name given but will not be used.\n')
 
+if cmdl_opts.outfile is not None and cmdl_opts.use_title:
+	sys.exit('Error: using the video title conflicts with using a given file name.')
+
+if cmdl_opts.use_netrc and cmdl_opts.password is not None:
+	sys.exit('Error: using netrc conflicts with giving command line password.')
+
+# Incorrect option formatting
+if cmdl_opts.username is None and cmdl_opts.password is not None:
+	sys.exit('Error: password give but username is missing.')
+
+# Get account information if any
+account_username = None
+account_password = None
+
+if cmdl_opts.use_netrc:
+	try:
+		info = netrc.netrc().authenticators('youtube')
+		if info is None:
+			sys.exit('Error: no authenticators for machine youtube.')
+		netrc_username = info[0]
+		netrc_password = info[2]
+	except IOError:
+		sys.exit('Error: unable to read .netrc file.')
+	except netrc.NetrcParseError:
+		sys.exit('Error: unable to parse .netrc file.')
+
+if cmdl_opts.password is not None:
+	account_username = cmdl_opts.username
+	account_password = cmdl_opts.password
+else:
+	if cmdl_opts.username is not None and cmdl_opts.use_netrc:
+		if cmdl_opts.username != netrc_username:
+			sys.exit('Error: conflicting username from .netrc and command line options.')
+		account_username = cmdl_opts.username
+		account_password = netrc_password
+	elif cmdl_opts.username is not None:
+		account_username = cmdl_opts.username
+		account_password = getpass.getpass('Type YouTube password and press return: ')
+	elif cmdl_opts.use_netrc:
+		if len(netrc_username) == 0:
+			sys.exit('Error: empty username in .netrc file.')
+		account_username = netrc_username
+		account_password = netrc_password
+
 # Get output file name 
 if cmdl_opts.outfile is None:
 	video_filename = '%s.flv' % video_url_id
@@ -138,11 +237,6 @@ else:
 if not video_filename.lower().endswith('.flv'):
 	sys.stderr.write('Warning: video file name does not end in .flv\n')
 
-# Verify both or none present
-if ((cmdl_opts.username is None and not cmdl_opts.password is None) or
-    (not cmdl_opts.username is None and cmdl_opts.password is None)):
-	sys.exit('Error: both username and password must be given, or none.')
-
 # Test writable file
 if not cmdl_opts.simulate:
 	try:
@@ -153,65 +247,29 @@ if not cmdl_opts.simulate:
 		sys.exit('Error: unable to open %s for writing.' % video_filename)
 
 # Install cookie and proxy handlers
-urllib2.install_opener(urllib2.build_opener(urllib2.HTTPCookieProcessor()))
 urllib2.install_opener(urllib2.build_opener(urllib2.ProxyHandler()))
+urllib2.install_opener(urllib2.build_opener(urllib2.HTTPCookieProcessor()))
 
-# Login and confirm age if needed
-if not cmdl_opts.username is None:
-	try:
-		# Log in
-		cond_print('Logging in... ')
-		perform_request(const_login_url_str, const_login_post_str % (cmdl_opts.username, cmdl_opts.password)).read()
-		cond_print('done.\n')
-
-	except (urllib2.URLError, ValueError, httplib.HTTPException, TypeError):
-		cond_print('failed.\n')
-		error_advice_exit('unable to login')
-
-	except KeyboardInterrupt:
-		sys.exit('\n')
-
-	try:
-		# Get age confirmation cookie
-		cond_print('Confirming age... ')
-		perform_request(const_age_url_str % video_url_id, const_age_post_str % video_url_id).read()
-		cond_print('done.\n')
-
-	except (urllib2.URLError, ValueError, httplib.HTTPException, TypeError):
-		cond_print('failed.\n')
-		error_advice_exit('unable to confirm age')
+# Log in and confirm age if needed
+if account_username is not None:
+	url = const_login_url_str % video_url_id
+	post = const_login_post_str % (video_url_id, account_username, account_password)
+	download_step(False, 'Logging in', 'unable to log in', url, post)
 
-	except KeyboardInterrupt:
-		sys.exit('\n')
+	url = const_age_url_str % video_url_id
+	post = const_age_post_str % video_url_id
+	download_step(False, 'Confirming age', 'unable to confirm age', url, post)
 
 # Retrieve video webpage
-try:
-	cond_print('Retrieving video webpage... ')
-	video_webpage = perform_request(video_url).read()
-	cond_print('done.\n')
-
-except (urllib2.URLError, ValueError, httplib.HTTPException, TypeError):
-	cond_print('failed.\n')
-	error_advice_exit('unable to download video webpage')
+video_webpage = download_step(True, 'Retrieving video webpage', 'unable to retrieve video webpage', video_url)
 
-except KeyboardInterrupt:
-	sys.exit('\n')
+# Extract video title if needed
+if cmdl_opts.use_title:
+	video_title = extract_step('Extracting video title', 'unable to extract video title', const_video_title_re, video_webpage)
 
 # Extract needed video URL parameters
-try:
-	cond_print('Extracting video URL parameters... ')
-	video_url_params_mo = const_video_url_params_re.search(video_webpage)
-	
-	if video_url_params_mo is None:
-		cond_print('failed.\n')
-		error_advice_exit('unable to extract URL parameters')
-	
-	video_url_params = video_url_params_mo.group(1)
-	video_url_real = const_video_url_real_str % video_url_params
-	cond_print('done.\n')
-
-except KeyboardInterrupt:
-	sys.exit('\n')
+video_url_params = extract_step('Extracting video URL parameters', 'unable to extract URL parameters', const_video_url_params_re, video_webpage)
+video_url_real = const_video_url_real_str % video_url_params
 
 # Retrieve video data
 try:
@@ -222,29 +280,49 @@ try:
 	if cmdl_opts.simulate:
 		sys.exit()
 
-	cond_print('Retrieving video data... ')
 	video_file = open(video_filename, 'wb')
 	try:
-		video_len_str = '%sk' % to_k(int(video_data.info()['Content-length']))
+		video_len_str = '%sk' % to_k(long(video_data.info()['Content-length']))
 	except KeyError:
 		video_len_str = '(unknown)'
 
 	byte_counter = 0
-	video_block = video_data.read(const_block_size)
-	while len(video_block) != 0:
-		byte_counter += len(video_block)
-		video_file.write(video_block)
+	block_size = const_initial_block_size
+	while True:
 		cond_print('\rRetrieving video data... %sk of %s ' % (to_k(byte_counter), video_len_str))
-		video_block = video_data.read(const_block_size)
+		before = time.time()
+		video_block = video_data.read(block_size)
+		after = time.time()
+		dl_bytes = len(video_block)
+		if dl_bytes == 0:
+			break
+		byte_counter += dl_bytes
+		video_file.write(video_block)
+		block_size = new_block_size(before, after, dl_bytes)
 
 	video_file.close()
 	cond_print('done.\n')
 	cond_print('Video data saved to %s\n' % video_filename)
-	sys.exit()
 
-except (urllib2.URLError, ValueError, httplib.HTTPException, TypeError):
+except (urllib2.URLError, ValueError, httplib.HTTPException, TypeError, socket.error):
 	cond_print('failed.\n')
 	error_advice_exit('unable to download video data')
 
 except KeyboardInterrupt:
 	sys.exit('\n')
+
+# Rename video file if needed
+if cmdl_opts.use_title:
+	try:
+		final_filename = '%s-%s.flv' % (title_string_norm(video_title), video_url_id)
+		os.rename(video_filename, final_filename)
+		cond_print('Video file renamed to %s\n' % final_filename)
+	
+	except OSError:
+		sys.stderr.write('Warning: unable to rename file.\n')
+
+	except KeyboardInterrupt:
+		sys.exit('\n')
+
+# Finish
+sys.exit()