X-Git-Url: https://code.delx.au/webdl/blobdiff_plain/3efb2a9f1a680fe1a7ede3982b8f72ac9882168e..4b32578817efa86e67d31f870c33b645c74934d3:/common.py

diff --git a/common.py b/common.py
index f18cb38..bfc49fc 100644
--- a/common.py
+++ b/common.py
@@ -1,12 +1,12 @@
-# vim:ts=4:sts=4:sw=4:noet
-
-from lxml import etree
+from lxml import etree, html
+import cookielib
 import json
 try:
-	import hashlib
+    import hashlib
 except ImportError:
-	import md5 as hashlib
+    import md5 as hashlib
 import os
+import re
 import shutil
 import signal
 import subprocess
@@ -14,122 +14,370 @@ import sys
 import tempfile
 import time
 import urllib
+import urllib2
+import urlparse
 
 
-import autosocks
-autosocks.try_autosocks()
+try:
+    import autosocks
+    autosocks.try_autosocks()
+except ImportError:
+    pass
 
-CACHE_DIR = os.path.expanduser("~/.cache/webdl")
+CACHE_DIR = os.path.join(os.environ.get("XDG_CACHE_HOME", os.path.expanduser("~/.cache")), "webdl")
+USER_AGENT = "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:21.0) Gecko/20100101 Firefox/21.0"
 
 class Node(object):
-	def __init__(self, title, parent=None):
-		self.title = title
-		if parent:
-			parent.children.append(self)
-		self.parent = parent
-		self.children = []
-		self.can_download = False
+    def __init__(self, title, parent=None):
+        self.title = title
+        if parent:
+            parent.children.append(self)
+        self.parent = parent
+        self.children = []
+        self.can_download = False
 
-	def download(self):
-		raise NotImplemented
+    def get_children(self):
+        if not self.children:
+            self.fill_children()
+        return self.children
+
+    def fill_children(self):
+        pass
+
+    def download(self):
+        raise NotImplemented
 
 
 def load_root_node():
-	root_node = Node("Root")
+    root_node = Node("Root")
+
+    import iview
+    iview.fill_nodes(root_node)
 
-	print "Loading iView episode data...",
-	sys.stdout.flush()
-	import iview
-	iview_node = Node("ABC iView", root_node)
-	iview.fill_nodes(iview_node)
-	print "done"
+    import sbs
+    sbs.fill_nodes(root_node)
 
-	print "Loading SBS episode data...",
-	sys.stdout.flush()
-	import sbs
-	sbs_node = Node("SBS", root_node)
-	sbs.fill_nodes(sbs_node)
-	print "done"
+###    import plus7
+###    plus7.fill_nodes(root_node)
 
-	return root_node
+    import brightcove
+    brightcove.fill_nodes(root_node)
 
+    return root_node
+
+valid_chars = frozenset("-_.()!@#%^ abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789")
+def sanify_filename(filename):
+    filename = filename.encode("ascii", "ignore")
+    filename = "".join(c for c in filename if c in valid_chars)
+    return filename
+
+cookiejar = cookielib.CookieJar()
+urlopener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cookiejar))
+def _urlopen(url, referrer=None):
+    req = urllib2.Request(url)
+    req.add_header("User-Agent", USER_AGENT)
+    if referrer:
+        req.add_header("Referer", referrer)
+    return urlopener.open(req)
 
 def urlopen(url, max_age):
-	if not os.path.isdir(CACHE_DIR):
-		os.makedirs(CACHE_DIR)
+### print url
+    if not os.path.isdir(CACHE_DIR):
+        os.makedirs(CACHE_DIR)
+
+    if max_age <= 0:
+        return _urlopen(url)
 
-	if max_age <= 0:
-		return urllib.urlopen(url)
+    filename = hashlib.md5(url).hexdigest()
+    filename = os.path.join(CACHE_DIR, filename)
+    if os.path.exists(filename):
+        file_age = int(time.time()) - os.path.getmtime(filename)
+        if file_age < max_age:
+            return open(filename)
 
-	filename = hashlib.md5(url).hexdigest()
-	filename = os.path.join(CACHE_DIR, filename)
-	if os.path.exists(filename):
-		file_age = int(time.time()) - os.path.getmtime(filename)
-		if file_age < max_age:
-			return open(filename)
+    src = _urlopen(url)
+    dst = open(filename, "wb")
+    try:
+        shutil.copyfileobj(src, dst)
+    except Exception, e:
+        try:
+            os.unlink(filename)
+        except OSError:
+            pass
+        raise e
+    src.close()
+    dst.close()
 
-	src = urllib.urlopen(url)
-	dst = open(filename, "w")
-	shutil.copyfileobj(src, dst)
-	src.close()
-	dst.close()
+    return open(filename)
 
-	return open(filename)
+def grab_text(url, max_age):
+    f = urlopen(url, max_age)
+    text = f.read().decode("utf-8")
+    f.close()
+    return text
+
+def grab_html(url, max_age):
+    f = urlopen(url, max_age)
+    doc = html.parse(f, html.HTMLParser(encoding="utf-8", recover=True))
+    f.close()
+    return doc
 
 def grab_xml(url, max_age):
-	f = urlopen(url, max_age)
-	doc = etree.parse(f)
-	f.close()
-	return doc
+    f = urlopen(url, max_age)
+    doc = etree.parse(f, etree.XMLParser(encoding="utf-8", recover=True))
+    f.close()
+    return doc
+
+def grab_json(url, max_age, skip_assignment=False, skip_function=False):
+    f = urlopen(url, max_age)
+    if skip_assignment:
+        text = f.read()
+        pos = text.find("=")
+        doc = json.loads(text[pos+1:])
+    elif skip_function:
+        text = f.read()
+        pos = text.find("(")
+        rpos = text.rfind(")")
+        doc = json.loads(text[pos+1:rpos])
+    else:
+        doc = json.load(f)
+    f.close()
+    return doc
+
+def exec_subprocess(cmd):
+    try:
+        p = subprocess.Popen(cmd)
+        ret = p.wait()
+        if ret != 0:
+            print >>sys.stderr, cmd[0], "exited with error code:", ret
+            return False
+        else:
+            return True
+    except OSError, e:
+        print >>sys.stderr, "Failed to run", cmd[0], e
+    except KeyboardInterrupt:
+        print "Cancelled", cmd
+        try:
+            p.terminate()
+            p.wait()
+        except KeyboardInterrupt:
+            p.send_signal(signal.SIGKILL)
+            p.wait()
+    return False
+
+
+def check_command_exists(cmd):
+    try:
+        subprocess.check_output(cmd)
+        return True
+    except Exception:
+        return False
+
+def generate_remux_cmd(infile, outfile):
+    if check_command_exists(["avconv", "--help"]):
+        return [
+            "avconv",
+            "-i", infile,
+            "-bsf:a", "aac_adtstoasc",
+            "-acodec", "copy",
+            "-vcodec", "copy",
+            outfile,
+        ]
+
+    if check_command_exists(["ffmpeg", "--help"]):
+        return [
+            "ffmpeg",
+            "-i", infile,
+            "-bsf:a", "aac_adtstoasc",
+            "-acodec", "copy",
+            "-vcodec", "copy",
+            outfile,
+        ]
+
+    raise Exception("You must install ffmpeg or libav-tools")
+
+def remux(infile, outfile):
+    print "Converting %s to mp4" % infile
+    cmd = generate_remux_cmd(infile, outfile)
+    if not exec_subprocess(cmd):
+        # failed, error has already been logged
+        return False
+    try:
+        flv_size = os.stat(infile).st_size
+        mp4_size = os.stat(outfile).st_size
+        if abs(flv_size - mp4_size) < 0.1 * flv_size:
+            os.unlink(infile)
+            return True
+        else:
+            print >>sys.stderr, "The size of", outfile, "is suspicious, did avconv fail?"
+            return False
+    except Exception, e:
+        print >>sys.stderr, "Conversion failed", e
+        return False
+
+def convert_to_mp4(filename):
+    with open(filename) as f:
+        fourcc = f.read(4)
+    basename, ext = os.path.splitext(filename)
+
+    if ext == ".mp4" and fourcc == "FLV\x01":
+        os.rename(filename, basename + ".flv")
+        ext = ".flv"
+        filename = basename + ext
+
+    if ext in (".flv", ".ts"):
+        filename_mp4 = basename + ".mp4"
+        return remux(filename, filename_mp4)
 
-def grab_json(url, max_age):
-	f = urlopen(url, max_age)
-	doc = json.load(f)
-	f.close()
-	return doc
+    return ext == ".mp4"
+
+
+def download_hds(filename, video_url, pvswf=None):
+    filename = sanify_filename(filename)
+    video_url = video_url.replace("http://", "hds://")
+    print "Downloading: %s" % filename
+    cmd = [
+        "livestreamer",
+        "-o", filename,
+        "%s pvswf=%s" % (video_url, pvswf),
+        "best",
+    ]
+    if exec_subprocess(cmd):
+        return convert_to_mp4(filename)
+    else:
+        return False
 
 def download_rtmp(filename, vbase, vpath, hash_url=None):
-	if vpath.endswith(".flv"):
-		vpath = vpath[:-4]
-	cmd = [
-		"rtmpdump",
-		"-o", filename,
-		"-r", vbase,
-		"-y", vpath,
-	]
-	if hash_url is not None:
-		cmd += ["--swfVfy", hash_url]
-	try:
-		p = subprocess.Popen(cmd)
-		ret = p.wait()
-		if ret != 0:
-			print >>sys.stderr, "rtmpdump exited with error code:", ret
-			return False
-		else:
-			return True
-	except OSError, e:
-		print >>sys.stderr, "Failed to run rtmpdump!", e
-		return False
-	except KeyboardInterrupt:
-		print "Cancelled", cmd
-		try:
-			p.terminate()
-			p.wait()
-		except KeyboardInterrupt:
-			p.send_signal(signal.SIGKILL)
-			p.wait()
-
-def download_urllib(filename, url):
-	print "Downloading: %s -> %s" % (url, filename)
-	try:
-		src = urllib.urlopen(url)
-		dst = open(filename, "w")
-		shutil.copyfileobj(src, dst)
-		return True
-	except KeyboardInterrupt:
-		print "\nCancelled", url
-	finally:
-		src.close()
-		dst.close()
-	return False
+    filename = sanify_filename(filename)
+    print "Downloading: %s" % filename
+    if vpath.endswith(".flv"):
+        vpath = vpath[:-4]
+    cmd = [
+        "rtmpdump",
+        "-o", filename,
+        "-r", vbase,
+        "-y", vpath,
+    ]
+    if hash_url is not None:
+        cmd += ["--swfVfy", hash_url]
+    if exec_subprocess(cmd):
+        return convert_to_mp4(filename)
+    else:
+        return False
+
+def download_hls_get_stream(url):
+    def parse_bandwidth(line):
+        params = line.split(":", 1)[1].split(",")
+        for kv in params:
+            k, v = kv.split("=", 1)
+            if k == "BANDWIDTH":
+                return int(v)
+        return 0
+
+    m3u8 = grab_text(url, 0)
+    best_bandwidth = None
+    best_url = None
+    for line in m3u8.split("\n"):
+        if line.startswith("#EXT-X-STREAM-INF:"):
+            bandwidth = parse_bandwidth(line)
+            if best_bandwidth is None or bandwidth > best_bandwidth:
+                best_bandwidth = bandwidth
+                best_url = None
+        elif not line.startswith("#"):
+            if best_url is None:
+                best_url = line.strip()
+
+    if not best_url:
+        raise Exception("Failed to find best stream for HLS: " + url)
+
+    return best_url
+
+def download_hls_segments(outf, url):
+    m3u8 = grab_text(url, 0)
+
+    fail_if_not_last_segment = None
+    for line in m3u8.split("\n"):
+        if not line.strip() or line.startswith("#"):
+            continue
+
+        if fail_if_not_last_segment:
+            raise e
+
+        try:
+            download_hls_fetch_segment(outf, line)
+        except urllib2.HTTPError, e:
+            fail_if_not_last_segment = e
+            continue
+        sys.stdout.write(".")
+        sys.stdout.flush()
+
+    sys.stdout.write("\n")
+
+def download_hls_fetch_segment(outf, segment_url):
+    try:
+        src = _urlopen(segment_url)
+        shutil.copyfileobj(src, outf)
+    except:
+        raise
+    finally:
+        try:
+            src.close()
+        except:
+            pass
+
+def download_hls(filename, m3u8_master_url, hack_url_func=None):
+    filename = sanify_filename(filename)
+    print "Downloading: %s" % filename
+
+    if hack_url_func is None:
+        hack_url_func = lambda url: url
+
+    tmpdir = tempfile.mkdtemp(prefix="webdl-hls")
+
+    try:
+        best_stream_url = download_hls_get_stream(hack_url_func(m3u8_master_url))
+        ts_file = open(filename, "wb")
+        download_hls_segments(ts_file, hack_url_func(best_stream_url))
+    except KeyboardInterrupt:
+        print "\nCancelled", m3u8_master_url
+        return False
+    finally:
+        shutil.rmtree(tmpdir)
+        try:
+            ts_file.close()
+        except:
+            pass
+
+    return convert_to_mp4(filename)
+
+def natural_sort(l, key=None):
+    ignore_list = ["a", "the"]
+    def key_func(k):
+        if key is not None:
+            k = key(k)
+        k = k.lower()
+        newk = []
+        for c in re.split("([0-9]+)", k):
+            c = c.strip()
+            if c.isdigit():
+                newk.append(int(c))
+            else:
+                for subc in c.split():
+                    if subc not in ignore_list:
+                        newk.append(subc)
+        return newk
+
+    return sorted(l, key=key_func)
+
+def append_to_qs(url, params):
+    r = list(urlparse.urlsplit(url))
+    qs = urlparse.parse_qs(r[3])
+    for k, v in params.iteritems():
+        if v is not None:
+            qs[k] = v
+        elif qs.has_key(k):
+            del qs[k]
+    r[3] = urllib.urlencode(qs, True)
+    url = urlparse.urlunsplit(r)
+    return url