webapp/handlers_boot.py

   1 #!/usr/bin/python
   2
   3 import logging
   4 import os
   5 import tornado.httpserver
   6 import tornado.ioloop
   7 import tornado.locale
   8 import tornado.options
   9 import tornado.web
  10
  11 import backend
  12
  13 from handlers_base import BaseHandler
  14
  15 BASEDIR = os.path.dirname(__file__)
  16
  17 def word_wrap(s, width=45):
  18         paragraphs = s.split('\n')
  19         lines = []
  20         for paragraph in paragraphs:
  21                 while len(paragraph) > width:
  22                         pos = paragraph.rfind(' ', 0, width)
  23                         if not pos:
  24                                 pos = width
  25                         lines.append(paragraph[:pos])
  26                         paragraph = paragraph[pos:]
  27                 lines.append(paragraph.lstrip())
  28         return '\n'.join(lines)
  29
  30 class BootBaseHandler(BaseHandler):
  31         @property
  32         def arch(self):
  33                 arch = self.get_argument("arch", "i386")
  34                 if not arch in ("x86_64", "i586", "i386"):
  35                         raise tornado.web.HTTPError(400, "Invalid architecture")
  36
  37                 if arch == "i386":
  38                         arch = "i586"
  39
  40                 return arch
  41
  42         @property
  43         def platform(self):
  44                 platform = self.get_argument("platform", "pcbios")
  45                 if not platform in ("pcbios", "efi"):
  46                         raise tornado.web.HTTPError(400, "Invalid platform")
  47
  48                 return platform
  49
  50
  51 class MenuGPXEHandler(BootBaseHandler):
  52         """
  53                 menu.gpxe
  54         """
  55         def get(self):
  56                 # Check if version of the bootloader is recent enough.
  57                 # Otherwise send the latest version of the PXE loader.
  58                 user_agent = self.request.headers.get("User-Agent", None)
  59                 if user_agent:
  60                         try:
  61                                 client, version = user_agent.split("/")
  62                         except:
  63                                 pass
  64                         else:
  65                                 # We replaced gPXE by iPXE.
  66                                 if client == "gPXE":
  67                                         return self.serve_update()
  68
  69                                 # Everything under version 1.0.0 should be
  70                                 # updated.
  71                                 if version < "1.0.0":
  72                                         return self.serve_update()
  73
  74                 # Devliver content
  75                 self.set_header("Content-Type", "text/plain")
  76                 self.write("#!gpxe\n")
  77
  78                 self.write("set 209:string premenu.cfg?arch=%s&platform=%s\n" \
  79                         % (self.arch, self.platform))
  80                 self.write("set 210:string http://boot.dev.ipfire.org/\n")
  81                 self.write("chain pxelinux.0\n")
  82
  83         def serve_update(self):
  84                 self.set_header("Content-Type", "text/plain")
  85                 self.write("#!gpxe\n")
  86
  87                 # Small warning
  88                 self.write("echo\necho Your copy of gPXE/iPXE is too old. ")
  89                 self.write("Upgrade to avoid seeing this every boot!\n")
  90
  91                 self.write("chain http://mirror0.ipfire.org/releases/ipfire-boot/latest/ipxe.kpxe\n")
  92
  93 class PremenuCfgHandler(BootBaseHandler):
  94         def get(self):
  95                 self.set_header("Content-Type", "text/plain")
  96
  97                 self.render("netboot/premenu.cfg", arch=self.arch, platform=self.platform)
  98
  99
 100 class MenuCfgHandler(BootBaseHandler):
 101         class NightlyBuildReleaseDummy(object):
 102                 id = 100
 103                 name = "Nightly Build"
 104                 sname = "nightly-build"
 105
 106                 def supports_arch(self, arch):
 107                         return arch in ("i586", "x86_64")
 108
 109                 def supports_platform(self, platform):
 110                         return platform == "pcbios"
 111
 112                 def netboot_kernel_url(self, arch, platform):
 113                         return "http://nightly.ipfire.org/next/latest/%s/images/vmlinuz" % arch
 114
 115                 def netboot_initrd_url(self, arch, platform):
 116                         return "http://nightly.ipfire.org/next/latest/%s/images/instroot" % arch
 117
 118                 def netboot_args(self, arch, platform):
 119                         return "installer.download-url=http://nightly.ipfire.org/next/latest/%s/images/installer.iso" % arch
 120
 121                 def is_netboot_capable(self):
 122                         return True
 123
 124         nightly_build = NightlyBuildReleaseDummy()
 125
 126         def get(self):
 127                 self.set_header("Content-Type", "text/plain")
 128
 129                 latest_release = self.releases.get_latest()
 130                 if latest_release and not latest_release.supports_arch(self.arch):
 131                         latest_release = None
 132
 133                 stable_releases = [r for r in self.releases.get_stable()
 134                         if r.supports_arch(self.arch) and r.supports_platform(self.platform)]
 135                 try:
 136                         stable_releases.remove(latest_release)
 137                 except ValueError:
 138                         pass
 139
 140                 development_releases = [r for r in self.releases.get_unstable()
 141                         if r.supports_arch(self.arch) and r.supports_platform(self.platform)]
 142                 development_releases.insert(0, self.nightly_build)
 143
 144                 self.render("netboot/menu.cfg", latest_release=latest_release,
 145                         stable_releases=stable_releases, development_releases=development_releases,
 146                         arch=self.arch, platform=self.platform)