def LocDecode(Str, Dir):
# Check for Decimal degrees, DGM, or DGMS
if re.match(r"^[+-]?[\d.]+$", Str) is not None:
- return Str
+ return Str
Deg = '0'
Min = None
# Check for DDDxMM.MMMM where x = [nsew]
Match = re.match(r"^(\d+)([" + Dir + r"])([\d.]+)$", Str)
if Match:
- G = Match.groups()
- Deg = G[0]
- Min = G[2]
- Dr = G[1]
+ G = Match.groups()
+ Deg = G[0]
+ Min = G[2]
+ Dr = G[1]
# Check for DD.DD x
Match = re.match(r"^([\d.]+) ?([" + Dir + r"])$", Str)
if Match:
- G = Match.groups()
- Deg = G[0]
- Dr = G[1]
+ G = Match.groups()
+ Deg = G[0]
+ Dr = G[1]
# Check for DD:MM.MM x
Match = re.match(r"^(\d+):([\d.]+) ?([" + Dir + "])$", Str)
if Match:
- G = Match.groups()
- Deg = G[0]
- Min = G[1]
- Dr = G[2]
+ G = Match.groups()
+ Deg = G[0]
+ Min = G[1]
+ Dr = G[2]
# Check for DD:MM:SS.SS x
Match = re.match(r"^(\d+):(\d+):([\d.]+) ?([" + Dir + "])$", Str)
if Match:
- G = Match.groups()
- Deg = G[0]
- Min = G[1]
- Sec = G[2]
- Dr = G[3]
+ G = Match.groups()
+ Deg = G[0]
+ Min = G[1]
+ Sec = G[2]
+ Dr = G[3]
# Some simple checks
if float(Deg) > 180:
- raise UDFormatError("Bad degrees")
+ raise UDFormatError("Bad degrees")
if Min is not None and float(Min) > 60:
- raise UDFormatError("Bad minutes")
+ raise UDFormatError("Bad minutes")
if Sec is not None and float(Sec) > 60:
- raise UDFormatError("Bad seconds")
+ raise UDFormatError("Bad seconds")
# Pad on an extra leading 0 to disambiguate small numbers
if len(Deg) <= 1 or Deg[1] == '.':
- Deg = '0' + Deg
+ Deg = '0' + Deg
if Min is not None and (len(Min) <= 1 or Min[1] == '.'):
- Min = '0' + Min
+ Min = '0' + Min
if Sec is not None and (len(Sec) <= 1 or Sec[1] == '.'):
- Sec = '0' + Sec
+ Sec = '0' + Sec
# Construct a DGM/DGMS type value from the components.
Res = "+"
if Dr == Dir[1]:
- Res = "-"
+ Res = "-"
Res = Res + Deg
if Min is not None:
- Res = Res + Min
+ Res = Res + Min
if Sec is not None:
- Res = Res + Sec
+ Res = Res + Sec
return Res
# Handle changing a set of arbitary fields
# <field>: value
def DoArbChange(Str, Attrs):
- Match = re.match("^([^ :]+): (.*)$", Str)
- if Match is None:
- return None
- G = Match.groups()
+ Match = re.match("^([^ :]+): (.*)$", Str)
+ if Match is None:
+ return None
+ G = Match.groups()
- attrName = G[0].lower()
- for i in ArbChanges.keys():
- if i.lower() == attrName:
- attrName = i
- break
- if attrName in ArbChanges:
- return None
+ attrName = G[0].lower()
+ for i in ArbChanges.keys():
+ if i.lower() == attrName:
+ attrName = i
+ break
+ if attrName in ArbChanges:
+ return None
- if re.match(ArbChanges[attrName], G[1]) is None:
- raise UDFormatError("Item does not match the required format" + ArbChanges[attrName])
+ if re.match(ArbChanges[attrName], G[1]) is None:
+ raise UDFormatError("Item does not match the required format" + ArbChanges[attrName])
- Attrs.append((ldap.MOD_REPLACE, attrName, value))
- return "Changed entry %s to %s" % (attrName, value)
+ Attrs.append((ldap.MOD_REPLACE, attrName, value))
+ return "Changed entry %s to %s" % (attrName, value)
# Handle changing a set of arbitary fields
# <field>: value
def DoDel(Str, Attrs):
- Match = re.match("^del (.*)$", Str)
- if Match is None:
- return None
- G = Match.groups()
+ Match = re.match("^del (.*)$", Str)
+ if Match is None:
+ return None
+ G = Match.groups()
- attrName = G[0].lower()
- for i in DelItems.keys():
- if i.lower() == attrName:
- attrName = i
- break
- if attrName not in DelItems:
- return "Cannot erase entry %s" % (attrName,)
+ attrName = G[0].lower()
+ for i in DelItems.keys():
+ if i.lower() == attrName:
+ attrName = i
+ break
+ if attrName not in DelItems:
+ return "Cannot erase entry %s" % (attrName,)
- Attrs.append((ldap.MOD_DELETE, attrName, None))
- return "Removed entry %s" % (attrName)
+ Attrs.append((ldap.MOD_DELETE, attrName, None))
+ return "Removed entry %s" % (attrName)
# Handle a position change message, the line format is:
# Lat: -12412.23 Long: +12341.2342
def DoPosition(Str, Attrs):
- Match = re.match(r"^lat: ([+\-]?[\d:.ns]+(?: ?[ns])?) long: ([+\-]?[\d:.ew]+(?: ?[ew])?)$", Str.lower())
- if Match is None:
- return None
+ Match = re.match(r"^lat: ([+\-]?[\d:.ns]+(?: ?[ns])?) long: ([+\-]?[\d:.ew]+(?: ?[ew])?)$", Str.lower())
+ if Match is None:
+ return None
- G = Match.groups()
- try:
- sLat = LocDecode(G[0], "ns")
- sLong = LocDecode(G[1], "ew")
- Lat = DecDegree(sLat, 1)
- Long = DecDegree(sLong, 1)
- except Exception:
- raise UDFormatError("Positions were found, but they are not correctly formed")
+ G = Match.groups()
+ try:
+ sLat = LocDecode(G[0], "ns")
+ sLong = LocDecode(G[1], "ew")
+ Lat = DecDegree(sLat, 1)
+ Long = DecDegree(sLong, 1)
+ except Exception:
+ raise UDFormatError("Positions were found, but they are not correctly formed")
- Attrs.append((ldap.MOD_REPLACE, "latitude", sLat))
- Attrs.append((ldap.MOD_REPLACE, "longitude", sLong))
- return "Position set to %s/%s (%s/%s decimal degrees)" % (sLat, sLong, Lat, Long)
+ Attrs.append((ldap.MOD_REPLACE, "latitude", sLat))
+ Attrs.append((ldap.MOD_REPLACE, "longitude", sLong))
+ return "Position set to %s/%s (%s/%s decimal degrees)" % (sLat, sLong, Lat, Long)
# Load bad ssh fingerprints
def LoadBadSSH():
- f = open(SSHFingerprintFile, "r")
- bad = []
- FingerprintLine = re.compile(r'^([0-9a-f:]{47}).*$')
- for line in f.readlines():
- Match = FingerprintLine.match(line)
- if Match is not None:
- g = Match.groups()
- bad.append(g[0])
- return bad
+ f = open(SSHFingerprintFile, "r")
+ bad = []
+ FingerprintLine = re.compile(r'^([0-9a-f:]{47}).*$')
+ for line in f.readlines():
+ Match = FingerprintLine.match(line)
+ if Match is not None:
+ g = Match.groups()
+ bad.append(g[0])
+ return bad
# Handle an SSH authentication key, the line format is:
# maybe it really should be:
# [allowed_hosts=machine1,machine2 ][options ]ssh-rsa keybytes [comment]
def DoSSH(Str, Attrs, badkeys, uid):
- Match = SSH2AuthSplit.match(Str)
- if Match is None:
- return None
- g = Match.groups()
- typekey = g[1]
- if Match is None:
- Match = SSHRSA1Match.match(Str)
- if Match is not None:
- return "RSA1 keys not supported anymore"
- return None
-
- # lines can now be prepended with "allowed_hosts=machine1,machine2 "
- machines = []
- if Str.startswith("allowed_hosts="):
- Str = Str.split("=", 1)[1]
- if ' ' not in Str:
- return "invalid ssh key syntax with machine specification"
- machines, Str = Str.split(' ', 1)
- machines = machines.split(",")
- for m in machines:
- if not m:
- return "empty machine specification for ssh key"
- if not machine_regex.match(m):
- return "machine specification for ssh key contains invalid characters"
- if m not in ValidHostNames:
- return "unknown machine {} used in allowed_hosts stanza for ssh keys".format(m)
-
- (fd, path) = tempfile.mkstemp(".pub", "sshkeytry", "/tmp")
- f = open(path, "w")
- f.write("%s\n" % (Str))
- f.close()
- cmd = "/usr/bin/ssh-keygen -l -f %s < /dev/null" % (path)
- (result, output) = commands.getstatusoutput(cmd)
- os.remove(path)
- if (result != 0):
- raise UDExecuteError("ssh-keygen -l invocation failed!\n%s\n" % (output))
-
- # format the string again for ldap:
- if machines:
- Str = "allowed_hosts=%s %s" % (",".join(machines), Str)
-
- # Head
- Date = time.strftime("%a, %d %b %Y %H:%M:%S +0000", time.gmtime(time.time()))
- ErrReplyHead = "From: %s\nCc: %s\nReply-To: %s\nDate: %s\n" % (os.environ['SENDER'], os.environ['SENDER'], ReplyTo, Date)
- Subst = {}
- Subst["__ADMIN__"] = ReplyTo
- Subst["__USER__"] = uid
-
- Match = SSHFingerprint.match(output)
- if Match is None:
- return "Failed to match SSH fingerprint, has the output of ssh-keygen changed?"
- g = Match.groups()
- key_size = g[0]
- fingerprint = g[1]
-
- if typekey == "rsa":
- key_size_ok = (int(key_size) >= 2048)
- elif typekey == "ed25519":
- key_size_ok = True
- else:
- key_size_ok = False
-
- if not key_size_ok:
- return "SSH key fails formal criteria, not added. We only accept RSA keys (>= 2048 bits) or ed25519 keys."
- elif fingerprint in badkeys:
- try:
- # Body
- Subst["__ERROR__"] = "SSH key with fingerprint %s known as bad key" % (g[1])
- ErrReply = TemplateSubst(Subst, open(TemplatesDir + "admin-info", "r").read())
-
- Child = os.popen("/usr/sbin/sendmail -t", "w")
- Child.write(ErrReplyHead)
- Child.write(ErrReply)
- if Child.close() is not None:
- raise UDExecuteError("Sendmail gave a non-zero return code")
- except Exception:
- sys.exit(EX_TEMPFAIL)
-
- # And now break and stop processing input, which sends a reply to the user.
- raise UDFormatError("Submitted SSH Key known to be bad and insecure, processing halted, NOTHING MODIFIED AT ALL")
-
- global SeenKey
- if SeenKey:
- Attrs.append((ldap.MOD_ADD, "sshRSAAuthKey", Str))
- return "SSH Key added: %s %s [%s]" % (key_size, fingerprint, FormatSSHAuth(Str))
-
- Attrs.append((ldap.MOD_REPLACE, "sshRSAAuthKey", Str))
- SeenKey = 1
- return "SSH Keys replaced with: %s %s [%s]" % (key_size, fingerprint, FormatSSHAuth(Str))
+ Match = SSH2AuthSplit.match(Str)
+ if Match is None:
+ return None
+ g = Match.groups()
+ typekey = g[1]
+ if Match is None:
+ Match = SSHRSA1Match.match(Str)
+ if Match is not None:
+ return "RSA1 keys not supported anymore"
+ return None
+
+ # lines can now be prepended with "allowed_hosts=machine1,machine2 "
+ machines = []
+ if Str.startswith("allowed_hosts="):
+ Str = Str.split("=", 1)[1]
+ if ' ' not in Str:
+ return "invalid ssh key syntax with machine specification"
+ machines, Str = Str.split(' ', 1)
+ machines = machines.split(",")
+ for m in machines:
+ if not m:
+ return "empty machine specification for ssh key"
+ if not machine_regex.match(m):
+ return "machine specification for ssh key contains invalid characters"
+ if m not in ValidHostNames:
+ return "unknown machine {} used in allowed_hosts stanza for ssh keys".format(m)
+
+ (fd, path) = tempfile.mkstemp(".pub", "sshkeytry", "/tmp")
+ f = open(path, "w")
+ f.write("%s\n" % (Str))
+ f.close()
+ cmd = "/usr/bin/ssh-keygen -l -f %s < /dev/null" % (path)
+ (result, output) = commands.getstatusoutput(cmd)
+ os.remove(path)
+ if (result != 0):
+ raise UDExecuteError("ssh-keygen -l invocation failed!\n%s\n" % (output))
+
+ # format the string again for ldap:
+ if machines:
+ Str = "allowed_hosts=%s %s" % (",".join(machines), Str)
+
+ # Head
+ Date = time.strftime("%a, %d %b %Y %H:%M:%S +0000", time.gmtime(time.time()))
+ ErrReplyHead = "From: %s\nCc: %s\nReply-To: %s\nDate: %s\n" % (os.environ['SENDER'], os.environ['SENDER'], ReplyTo, Date)
+ Subst = {}
+ Subst["__ADMIN__"] = ReplyTo
+ Subst["__USER__"] = uid
+
+ Match = SSHFingerprint.match(output)
+ if Match is None:
+ return "Failed to match SSH fingerprint, has the output of ssh-keygen changed?"
+ g = Match.groups()
+ key_size = g[0]
+ fingerprint = g[1]
+
+ if typekey == "rsa":
+ key_size_ok = (int(key_size) >= 2048)
+ elif typekey == "ed25519":
+ key_size_ok = True
+ else:
+ key_size_ok = False
+
+ if not key_size_ok:
+ return "SSH key fails formal criteria, not added. We only accept RSA keys (>= 2048 bits) or ed25519 keys."
+ elif fingerprint in badkeys:
+ try:
+ # Body
+ Subst["__ERROR__"] = "SSH key with fingerprint %s known as bad key" % (g[1])
+ ErrReply = TemplateSubst(Subst, open(TemplatesDir + "admin-info", "r").read())
+
+ Child = os.popen("/usr/sbin/sendmail -t", "w")
+ Child.write(ErrReplyHead)
+ Child.write(ErrReply)
+ if Child.close() is not None:
+ raise UDExecuteError("Sendmail gave a non-zero return code")
+ except Exception:
+ sys.exit(EX_TEMPFAIL)
+
+ # And now break and stop processing input, which sends a reply to the user.
+ raise UDFormatError("Submitted SSH key known to be bad and insecure, processing halted, NOTHING MODIFIED AT ALL")
+
+ global SeenKey
+ if SeenKey:
+ Attrs.append((ldap.MOD_ADD, "sshRSAAuthKey", Str))
+ return "SSH Key added: %s %s [%s]" % (key_size, fingerprint, FormatSSHAuth(Str))
+
+ Attrs.append((ldap.MOD_REPLACE, "sshRSAAuthKey", Str))
+ SeenKey = 1
+ return "SSH Keys replaced with: %s %s [%s]" % (key_size, fingerprint, FormatSSHAuth(Str))
# Handle changing a dns entry
# host IN CNAME foo.bar. <- Trailing dot is required
# host IN MX foo.bar. <- Trailing dot is required
def DoDNS(Str, Attrs, DnRecord):
- cnamerecord = re.match(r"^[-\w]+\s+IN\s+CNAME\s+([-\w.]+\.)$", Str, re.IGNORECASE)
- arecord = re.match(r'^[-\w]+\s+IN\s+A\s+(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})$', Str, re.IGNORECASE)
- mxrecord = re.match(r"^[-\w]+\s+IN\s+MX\s+(\d{1,3})\s+([-\w.]+\.)$", Str, re.IGNORECASE)
- txtrecord = re.match(r"^[-\w]+\s+IN\s+TXT\s+([-\d. a-z\t<>@:]+)", Str, re.IGNORECASE)
- aaaarecord = re.match(r'^[-\w]+\s+IN\s+AAAA\s+([A-F0-9:]{2,39})$', Str, re.IGNORECASE)
-
- if cnamerecord is None and\
- arecord is None and\
- mxrecord is None and\
- txtrecord is None and\
- aaaarecord is None:
- return None
-
- # Check if the name is already taken
- G = re.match(r'^([-\w+]+)\s', Str)
- if G is None:
- raise UDFormatError("Hostname not found although we already passed record syntax checks")
- hostname = G.group(1)
-
- # Check for collisions
- global lc
- # [JT 20070409 - search for both tab and space suffixed hostnames
- # since we accept either. It'd probably be better to parse the
- # incoming string in order to construct what we feed LDAP rather
- # than just passing it through as is.]
- filter = "(|(dnsZoneEntry=%s *)(dnsZoneEntry=%s *))" % (hostname, hostname)
- Rec = lc.search_s(BaseDn, ldap.SCOPE_ONELEVEL, filter, ["uid"])
- for x in Rec:
- if GetAttr(x, "uid") != GetAttr(DnRecord, "uid"):
- return "DNS entry is already owned by " + GetAttr(x, "uid")
-
- global SeenDNS
- global DNS
-
- if cnamerecord:
- if hostname in DNS:
- return "CNAME and other RR types not allowed: " + Str
- else:
- DNS[hostname] = 2
- else:
- if DNS.get(hostname) == 2:
- return "CNAME and other RR types not allowed: " + Str
- else:
- DNS[hostname] = 1
-
- if cnamerecord is not None:
- sanitized = "%s IN CNAME %s" % (hostname, cnamerecord.group(1))
- elif txtrecord is not None:
- sanitized = "%s IN TXT %s" % (hostname, txtrecord.group(1))
- elif arecord is not None:
- ipaddress = arecord.group(1)
- for quad in ipaddress.split('.'):
- if not (int(quad) >= 0 and int(quad) <= 255):
- return "Invalid quad %s in IP address %s in line %s" % (quad, ipaddress, Str)
- sanitized = "%s IN A %s" % (hostname, ipaddress)
- elif mxrecord is not None:
- priority = mxrecord.group(1)
- mx = mxrecord.group(2)
- sanitized = "%s IN MX %s %s" % (hostname, priority, mx)
- elif aaaarecord is not None:
- ipv6address = aaaarecord.group(1)
- parts = ipv6address.split(':')
- if len(parts) > 8:
- return "Invalid IPv6 address (%s): too many parts" % (ipv6address)
- if len(parts) <= 2:
- return "Invalid IPv6 address (%s): too few parts" % (ipv6address)
- if parts[0] == "":
- parts.pop(0)
- if parts[-1] == "":
- parts.pop(-1)
- seenEmptypart = False
- for p in parts:
- if len(p) > 4:
- return "Invalid IPv6 address (%s): part %s is longer than 4 characters" % (ipv6address, p)
- if p == "":
- if seenEmptypart:
- return "Invalid IPv6 address (%s): more than one :: (nothing in between colons) is not allowed" % (ipv6address)
- seenEmptypart = True
- sanitized = "%s IN AAAA %s" % (hostname, ipv6address)
- else:
- raise UDFormatError("None of the types I recognize was it. I shouldn't be here. confused.")
-
- if SeenDNS:
- Attrs.append((ldap.MOD_ADD, "dnsZoneEntry", sanitized))
- return "DNS Entry added " + sanitized
-
- Attrs.append((ldap.MOD_REPLACE, "dnsZoneEntry", sanitized))
- SeenDNS = 1
- return "DNS Entry replaced with " + sanitized
+ cnamerecord = re.match(r"^[-\w]+\s+IN\s+CNAME\s+([-\w.]+\.)$", Str, re.IGNORECASE)
+ arecord = re.match(r'^[-\w]+\s+IN\s+A\s+(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})$', Str, re.IGNORECASE)
+ mxrecord = re.match(r"^[-\w]+\s+IN\s+MX\s+(\d{1,3})\s+([-\w.]+\.)$", Str, re.IGNORECASE)
+ txtrecord = re.match(r"^[-\w]+\s+IN\s+TXT\s+([-\d. a-z\t<>@:]+)", Str, re.IGNORECASE)
+ aaaarecord = re.match(r'^[-\w]+\s+IN\s+AAAA\s+([A-F0-9:]{2,39})$', Str, re.IGNORECASE)
+
+ if cnamerecord is None and\
+ arecord is None and\
+ mxrecord is None and\
+ txtrecord is None and\
+ aaaarecord is None:
+ return None
+
+ # Check if the name is already taken
+ G = re.match(r'^([-\w+]+)\s', Str)
+ if G is None:
+ raise UDFormatError("Hostname not found although we already passed record syntax checks")
+ hostname = G.group(1)
+
+ # Check for collisions
+ global lc
+ # [JT 20070409 - search for both tab and space suffixed hostnames
+ # since we accept either. It'd probably be better to parse the
+ # incoming string in order to construct what we feed LDAP rather
+ # than just passing it through as is.]
+ filter = "(|(dnsZoneEntry=%s *)(dnsZoneEntry=%s *))" % (hostname, hostname)
+ Rec = lc.search_s(BaseDn, ldap.SCOPE_ONELEVEL, filter, ["uid"])
+ for x in Rec:
+ if GetAttr(x, "uid") != GetAttr(DnRecord, "uid"):
+ return "DNS entry is already owned by " + GetAttr(x, "uid")
+
+ global SeenDNS
+ global DNS
+
+ if cnamerecord:
+ if hostname in DNS:
+ return "CNAME and other RR types not allowed: " + Str
+ else:
+ DNS[hostname] = 2
+ else:
+ if DNS.get(hostname) == 2:
+ return "CNAME and other RR types not allowed: " + Str
+ else:
+ DNS[hostname] = 1
+
+ if cnamerecord is not None:
+ sanitized = "%s IN CNAME %s" % (hostname, cnamerecord.group(1))
+ elif txtrecord is not None:
+ sanitized = "%s IN TXT %s" % (hostname, txtrecord.group(1))
+ elif arecord is not None:
+ ipaddress = arecord.group(1)
+ for quad in ipaddress.split('.'):
+ if not (int(quad) >= 0 and int(quad) <= 255):
+ return "Invalid quad %s in IP address %s in line %s" % (quad, ipaddress, Str)
+ sanitized = "%s IN A %s" % (hostname, ipaddress)
+ elif mxrecord is not None:
+ priority = mxrecord.group(1)
+ mx = mxrecord.group(2)
+ sanitized = "%s IN MX %s %s" % (hostname, priority, mx)
+ elif aaaarecord is not None:
+ ipv6address = aaaarecord.group(1)
+ parts = ipv6address.split(':')
+ if len(parts) > 8:
+ return "Invalid IPv6 address (%s): too many parts" % (ipv6address)
+ if len(parts) <= 2:
+ return "Invalid IPv6 address (%s): too few parts" % (ipv6address)
+ if parts[0] == "":
+ parts.pop(0)
+ if parts[-1] == "":
+ parts.pop(-1)
+ seenEmptypart = False
+ for p in parts:
+ if len(p) > 4:
+ return "Invalid IPv6 address (%s): part %s is longer than 4 characters" % (ipv6address, p)
+ if p == "":
+ if seenEmptypart:
+ return "Invalid IPv6 address (%s): more than one :: (nothing in between colons) is not allowed" % (ipv6address)
+ seenEmptypart = True
+ sanitized = "%s IN AAAA %s" % (hostname, ipv6address)
+ else:
+ raise UDFormatError("None of the types I recognize was it. I shouldn't be here. confused.")
+
+ if SeenDNS:
+ Attrs.append((ldap.MOD_ADD, "dnsZoneEntry", sanitized))
+ return "DNS Entry added " + sanitized
+
+ Attrs.append((ldap.MOD_REPLACE, "dnsZoneEntry", sanitized))
+ SeenDNS = 1
+ return "DNS Entry replaced with " + sanitized
# Handle an RBL list (mailRBL, mailRHSBL, mailWhitelist)
def DoRBL(Str, Attrs):
- Match = re.compile('^mail(rbl|rhsbl|whitelist) ([-a-z0-9.]+)$').match(Str.lower())
- if Match is None:
- return None
+ Match = re.compile('^mail(rbl|rhsbl|whitelist) ([-a-z0-9.]+)$').match(Str.lower())
+ if Match is None:
+ return None
- if Match.group(1) == "rbl":
- Key = "mailRBL"
- if Match.group(1) == "rhsbl":
- Key = "mailRHSBL"
- if Match.group(1) == "whitelist":
- Key = "mailWhitelist"
- Host = Match.group(2)
+ if Match.group(1) == "rbl":
+ Key = "mailRBL"
+ if Match.group(1) == "rhsbl":
+ Key = "mailRHSBL"
+ if Match.group(1) == "whitelist":
+ Key = "mailWhitelist"
+ Host = Match.group(2)
- global SeenList
- if Key in SeenList:
- Attrs.append((ldap.MOD_ADD, Key, Host))
- return "%s added %s" % (Key, Host)
+ global SeenList
+ if Key in SeenList:
+ Attrs.append((ldap.MOD_ADD, Key, Host))
+ return "%s added %s" % (Key, Host)
- Attrs.append((ldap.MOD_REPLACE, Key, Host))
- SeenList[Key] = 1
- return "%s replaced with %s" % (Key, Host)
+ Attrs.append((ldap.MOD_REPLACE, Key, Host))
+ SeenList[Key] = 1
+ return "%s replaced with %s" % (Key, Host)
# Handle a ConfirmSudoPassword request
def DoConfirmSudopassword(Str, SudoPasswd):
- Match = re.compile('^confirm sudopassword (' + UUID_FORMAT + ') ([a-z0-9.,*-]+) ([0-9a-f]{40})$').match(Str)
- if Match is None:
- return None
+ Match = re.compile('^confirm sudopassword (' + UUID_FORMAT + ') ([a-z0-9.,*-]+) ([0-9a-f]{40})$').match(Str)
+ if Match is None:
+ return None
- uuid = Match.group(1)
- hosts = Match.group(2)
- hmac = Match.group(3)
+ uuid = Match.group(1)
+ hosts = Match.group(2)
+ hmac = Match.group(3)
- SudoPasswd[uuid] = (hosts, hmac)
- return "got confirm for sudo password %s on host(s) %s, auth code %s" % (uuid, hosts, hmac)
+ SudoPasswd[uuid] = (hosts, hmac)
+ return "got confirm for sudo password %s on host(s) %s, auth code %s" % (uuid, hosts, hmac)
def FinishConfirmSudopassword(l, uid, Attrs, SudoPasswd):
- result = "\n"
-
- if len(SudoPasswd) == 0:
- return None
-
- res = lc.search_s(BaseDn, ldap.SCOPE_ONELEVEL, "uid=" + uid, ['sudoPassword'])
- if len(res) != 1:
- raise UDFormatError("Not exactly one hit when searching for user")
- if sudoPassword in res[0][1]:
- inldap = res[0][1]['sudoPassword']
- else:
- inldap = []
-
- newldap = []
- for entry in inldap:
- Match = re.compile('^(' + UUID_FORMAT + ') (confirmed:[0-9a-f]{40}|unconfirmed) ([a-z0-9.,*-]+) ([^ ]+)$').match(entry)
- if Match is None:
- raise UDFormatError("Could not parse existing sudopasswd entry")
- uuid = Match.group(1)
- status = Match.group(2)
- hosts = Match.group(3)
- cryptedpass = Match.group(4)
-
- if uuid in SudoPasswd:
- confirmedHosts = SudoPasswd[uuid][0]
- confirmedHmac = SudoPasswd[uuid][1]
- if status.startswith('confirmed:'):
- if status == 'confirmed:' + make_passwd_hmac('password-is-confirmed', 'sudo', uid, uuid, hosts, cryptedpass):
- result += "Entry %s for sudo password on hosts %s already confirmed.\n" % (uuid, hosts)
+ result = "\n"
+
+ if len(SudoPasswd) == 0:
+ return None
+
+ res = lc.search_s(BaseDn, ldap.SCOPE_ONELEVEL, "uid=" + uid, ['sudoPassword'])
+ if len(res) != 1:
+ raise UDFormatError("Not exactly one hit when searching for user")
+ if sudoPassword in res[0][1]:
+ inldap = res[0][1]['sudoPassword']
+ else:
+ inldap = []
+
+ newldap = []
+ for entry in inldap:
+ Match = re.compile('^(' + UUID_FORMAT + ') (confirmed:[0-9a-f]{40}|unconfirmed) ([a-z0-9.,*-]+) ([^ ]+)$').match(entry)
+ if Match is None:
+ raise UDFormatError("Could not parse existing sudopasswd entry")
+ uuid = Match.group(1)
+ status = Match.group(2)
+ hosts = Match.group(3)
+ cryptedpass = Match.group(4)
+
+ if uuid in SudoPasswd:
+ confirmedHosts = SudoPasswd[uuid][0]
+ confirmedHmac = SudoPasswd[uuid][1]
+ if status.startswith('confirmed:'):
+ if status == 'confirmed:' + make_passwd_hmac('password-is-confirmed', 'sudo', uid, uuid, hosts, cryptedpass):
+ result += "Entry %s for sudo password on hosts %s already confirmed.\n" % (uuid, hosts)
+ else:
+ result += "Entry %s for sudo password on hosts %s is listed as confirmed, but HMAC does not verify.\n" % (uuid, hosts)
+ elif confirmedHosts != hosts:
+ result += "Entry %s hostlist mismatch (%s vs. %s).\n" % (uuid, hosts, confirmedHosts)
+ elif make_passwd_hmac('confirm-new-password', 'sudo', uid, uuid, hosts, cryptedpass) == confirmedHmac:
+ result += "Entry %s for sudo password on hosts %s now confirmed.\n" % (uuid, hosts)
+ status = 'confirmed:' + make_passwd_hmac('password-is-confirmed', 'sudo', uid, uuid, hosts, cryptedpass)
else:
- result += "Entry %s for sudo password on hosts %s is listed as confirmed, but HMAC does not verify.\n" % (uuid, hosts)
- elif confirmedHosts != hosts:
- result += "Entry %s hostlist mismatch (%s vs. %s).\n" % (uuid, hosts, confirmedHosts)
- elif make_passwd_hmac('confirm-new-password', 'sudo', uid, uuid, hosts, cryptedpass) == confirmedHmac:
- result += "Entry %s for sudo password on hosts %s now confirmed.\n" % (uuid, hosts)
- status = 'confirmed:' + make_passwd_hmac('password-is-confirmed', 'sudo', uid, uuid, hosts, cryptedpass)
- else:
- result += "Entry %s for sudo password on hosts %s HMAC verify failed.\n" % (uuid, hosts)
- del SudoPasswd[uuid]
+ result += "Entry %s for sudo password on hosts %s HMAC verify failed.\n" % (uuid, hosts)
+ del SudoPasswd[uuid]
- newentry = " ".join([uuid, status, hosts, cryptedpass])
- if len(newldap) == 0:
- newldap.append((ldap.MOD_REPLACE, "sudoPassword", newentry))
- else:
- newldap.append((ldap.MOD_ADD, "sudoPassword", newentry))
+ newentry = " ".join([uuid, status, hosts, cryptedpass])
+ if len(newldap) == 0:
+ newldap.append((ldap.MOD_REPLACE, "sudoPassword", newentry))
+ else:
+ newldap.append((ldap.MOD_ADD, "sudoPassword", newentry))
- for entry in SudoPasswd:
- result += "Entry %s that you confirm is not listed in ldap." % (entry,)
+ for entry in SudoPasswd:
+ result += "Entry %s that you confirm is not listed in ldap." % (entry,)
- for entry in newldap:
- Attrs.append(entry)
+ for entry in newldap:
+ Attrs.append(entry)
- return result
+ return result
def connect_to_ldap_and_check_if_locked(DnRecord):
- # Connect to the ldap server
- lc = connectLDAP()
- F = open(PassDir + "/pass-" + pwd.getpwuid(os.getuid())[0], "r")
- AccessPass = F.readline().strip().split(" ")
- F.close()
- lc.simple_bind_s("uid={},{}".format(AccessPass[0], BaseDn), AccessPass[1])
+ # Connect to the ldap server
+ lc = connectLDAP()
+ F = open(PassDir + "/pass-" + pwd.getpwuid(os.getuid())[0], "r")
+ AccessPass = F.readline().strip().split(" ")
+ F.close()
+ lc.simple_bind_s("uid={},{}".format(AccessPass[0], BaseDn), AccessPass[1])
- # Check for a locked account
- Attrs = lc.search_s(BaseDn, ldap.SCOPE_ONELEVEL, "uid=" + GetAttr(DnRecord, "uid"))
- if (GetAttr(Attrs[0], "userPassword").find("*LK*") != -1) \
- or GetAttr(Attrs[0], "userPassword").startswith("!"):
- raise UDNotAllowedError("This account is locked")
- return l
+ # Check for a locked account
+ Attrs = lc.search_s(BaseDn, ldap.SCOPE_ONELEVEL, "uid=" + GetAttr(DnRecord, "uid"))
+ if (GetAttr(Attrs[0], "userPassword").find("*LK*") != -1) \
+ or GetAttr(Attrs[0], "userPassword").startswith("!"):
+ raise UDNotAllowedError("This account is locked")
+ return l
# Handle an [almost] arbitary change
def HandleChange(Reply, DnRecord, Key):
- global PlainText
- Lines = re.split("\n *\r?", PlainText)
-
- Result = ""
- Attrs = []
- SudoPasswd = {}
- Show = 0
- CommitChanges = 1
- for Line in Lines:
- Line = Line.strip()
- if Line == "":
- continue
-
- # Try to process a command line
- Result += "> " + Line + "\n"
- try:
- if Line == "show":
- Show = 1
- Res = "OK"
- else:
- badkeys = LoadBadSSH()
- Res = DoPosition(Line, Attrs) or DoDNS(Line, Attrs, DnRecord) or \
- DoArbChange(Line, Attrs) or DoSSH(Line, Attrs, badkeys, GetAttr(DnRecord, "uid")) or \
- DoDel(Line, Attrs) or DoRBL(Line, Attrs) or DoConfirmSudopassword(Line, SudoPasswd)
- except Exception:
- Res = None
- Result += "==> %s: %s\n" % (sys.exc_type, sys.exc_value)
-
- # Fail, if someone tries to send someone elses signed email to the
- # daemon then we want to abort ASAP.
- if Res is None:
- CommitChanges = 0
- Result = Result + "Command is not understood. Halted - no changes committed\n"
- break
- Result += Res + "\n"
-
- # Connect to the ldap server
- lc = connect_to_ldap_and_check_if_locked(DnRecord)
-
- if CommitChanges == 1 and len(SudoPasswd) > 0: # only if we are still good to go
- try:
- Res = FinishConfirmSudopassword(l, GetAttr(DnRecord, "uid"), Attrs, SudoPasswd)
- if Res is not None:
- Result += Res + "\n"
- except Error, e:
- CommitChanges = 0
- Result = Result + "FinishConfirmSudopassword raised an error (%s) - no changes committed\n" % (e)
-
- if CommitChanges == 1 and len(Attrs) > 0:
- Dn = "uid=" + GetAttr(DnRecord, "uid") + "," + BaseDn
- lc.modify_s(Dn, Attrs)
-
- Attribs = ""
- if Show == 1:
- Attrs = lc.search_s(BaseDn, ldap.SCOPE_ONELEVEL, "uid=" + GetAttr(DnRecord, "uid"))
- if len(Attrs) == 0:
- raise UDNotAllowedError("User not found")
- Attribs = GPGEncrypt(PrettyShow(Attrs[0]) + "\n", "0x" + Key[1], Key[4])
-
- Subst = {}
- Subst["__FROM__"] = ChangeFrom
- Subst["__EMAIL__"] = EmailAddress(DnRecord)
- Subst["__ADMIN__"] = ReplyTo
- Subst["__RESULT__"] = Result
- Subst["__ATTR__"] = Attribs
-
- return Reply + TemplateSubst(Subst, open(TemplatesDir + "change-reply", "r").read())
+ global PlainText
+ Lines = re.split("\n *\r?", PlainText)
+
+ Result = ""
+ Attrs = []
+ SudoPasswd = {}
+ Show = 0
+ CommitChanges = 1
+ for Line in Lines:
+ Line = Line.strip()
+ if Line == "":
+ continue
+
+ # Try to process a command line
+ Result += "> " + Line + "\n"
+ try:
+ if Line == "show":
+ Show = 1
+ Res = "OK"
+ else:
+ badkeys = LoadBadSSH()
+ Res = DoPosition(Line, Attrs) or DoDNS(Line, Attrs, DnRecord) or \
+ DoArbChange(Line, Attrs) or DoSSH(Line, Attrs, badkeys, GetAttr(DnRecord, "uid")) or \
+ DoDel(Line, Attrs) or DoRBL(Line, Attrs) or DoConfirmSudopassword(Line, SudoPasswd)
+ except Exception:
+ Res = None
+ Result += "==> %s: %s\n" % (sys.exc_type, sys.exc_value)
+
+ # Fail, if someone tries to send someone elses signed email to the
+ # daemon then we want to abort ASAP.
+ if Res is None:
+ CommitChanges = 0
+ Result = Result + "Command is not understood. Halted - no changes committed\n"
+ break
+ Result += Res + "\n"
+
+ # Connect to the ldap server
+ lc = connect_to_ldap_and_check_if_locked(DnRecord)
+
+ if CommitChanges == 1 and len(SudoPasswd) > 0: # only if we are still good to go
+ try:
+ Res = FinishConfirmSudopassword(l, GetAttr(DnRecord, "uid"), Attrs, SudoPasswd)
+ if Res is not None:
+ Result += Res + "\n"
+ except Error, e:
+ CommitChanges = 0
+ Result = Result + "FinishConfirmSudopassword raised an error (%s) - no changes committed\n" % (e)
+
+ if CommitChanges == 1 and len(Attrs) > 0:
+ Dn = "uid=" + GetAttr(DnRecord, "uid") + "," + BaseDn
+ lc.modify_s(Dn, Attrs)
+
+ Attribs = ""
+ if Show == 1:
+ Attrs = lc.search_s(BaseDn, ldap.SCOPE_ONELEVEL, "uid=" + GetAttr(DnRecord, "uid"))
+ if len(Attrs) == 0:
+ raise UDNotAllowedError("User not found")
+ Attribs = GPGEncrypt(PrettyShow(Attrs[0]) + "\n", "0x" + Key[1], Key[4])
+
+ Subst = {}
+ Subst["__FROM__"] = ChangeFrom
+ Subst["__EMAIL__"] = EmailAddress(DnRecord)
+ Subst["__ADMIN__"] = ReplyTo
+ Subst["__RESULT__"] = Result
+ Subst["__ATTR__"] = Attribs
+
+ return Reply + TemplateSubst(Subst, open(TemplatesDir + "change-reply", "r").read())
# Handle ping handles an email sent to the 'ping' address (ie this program
# called with a ping argument) It replies with a dump of the public records.
def HandlePing(Reply, DnRecord, Key):
- Subst = {}
- Subst["__FROM__"] = PingFrom
- Subst["__EMAIL__"] = EmailAddress(DnRecord)
- Subst["__LDAPFIELDS__"] = PrettyShow(DnRecord)
- Subst["__ADMIN__"] = ReplyTo
+ Subst = {}
+ Subst["__FROM__"] = PingFrom
+ Subst["__EMAIL__"] = EmailAddress(DnRecord)
+ Subst["__LDAPFIELDS__"] = PrettyShow(DnRecord)
+ Subst["__ADMIN__"] = ReplyTo
- return Reply + TemplateSubst(Subst, open(TemplatesDir + "ping-reply", "r").read())
+ return Reply + TemplateSubst(Subst, open(TemplatesDir + "ping-reply", "r").read())
def get_crypttype_preamble(key):
- if (key[4] == 1):
- type = "Your message was encrypted using PGP 2.x\ncompatibility mode."
- else:
- type = "Your message was encrypted using GPG (OpenPGP)\ncompatibility "\
- "mode, without IDEA. This message cannot be decoded using PGP 2.x"
- return type
+ if (key[4] == 1):
+ type = "Your message was encrypted using PGP 2.x\ncompatibility mode."
+ else:
+ type = "Your message was encrypted using GPG (OpenPGP)\ncompatibility "\
+ "mode, without IDEA. This message cannot be decoded using PGP 2.x"
+ return type
# Handle a change password email sent to the change password address
# (this program called with the chpass argument)
def HandleChPass(Reply, DnRecord, Key):
- # Generate a random password
- Password = GenPass()
- Pass = HashPass(Password)
+ # Generate a random password
+ Password = GenPass()
+ Pass = HashPass(Password)
- # Use GPG to encrypt it
- Message = GPGEncrypt("Your new password is '" + Password + "'\n", "0x" + Key[1], Key[4])
- Password = None
+ # Use GPG to encrypt it
+ Message = GPGEncrypt("Your new password is '" + Password + "'\n", "0x" + Key[1], Key[4])
+ Password = None
- if Message is None:
- raise UDFormatError("Unable to generate the encrypted reply, gpg failed.")
+ if Message is None:
+ raise UDFormatError("Unable to generate the encrypted reply, gpg failed.")
- Subst = {}
- Subst["__FROM__"] = ChPassFrom
- Subst["__EMAIL__"] = EmailAddress(DnRecord)
- Subst["__CRYPTTYPE__"] = get_crypttype_preamble(Key)
- Subst["__PASSWORD__"] = Message
- Subst["__ADMIN__"] = ReplyTo
- Reply = Reply + TemplateSubst(Subst, open(TemplatesDir + "passwd-changed", "r").read())
+ Subst = {}
+ Subst["__FROM__"] = ChPassFrom
+ Subst["__EMAIL__"] = EmailAddress(DnRecord)
+ Subst["__CRYPTTYPE__"] = get_crypttype_preamble(Key)
+ Subst["__PASSWORD__"] = Message
+ Subst["__ADMIN__"] = ReplyTo
+ Reply = Reply + TemplateSubst(Subst, open(TemplatesDir + "passwd-changed", "r").read())
- lc = connect_to_ldap_and_check_if_locked(DnRecord)
- # Modify the password
- Rec = [(ldap.MOD_REPLACE, "userPassword", "{crypt}" + Pass),
- (ldap.MOD_REPLACE, "shadowLastChange", str(int(time.time() / (24 * 60 * 60))))]
- Dn = "uid=" + GetAttr(DnRecord, "uid") + "," + BaseDn
- lc.modify_s(Dn, Rec)
+ lc = connect_to_ldap_and_check_if_locked(DnRecord)
+ # Modify the password
+ Rec = [(ldap.MOD_REPLACE, "userPassword", "{crypt}" + Pass),
+ (ldap.MOD_REPLACE, "shadowLastChange", str(int(time.time() / (24 * 60 * 60))))]
+ Dn = "uid=" + GetAttr(DnRecord, "uid") + "," + BaseDn
+ lc.modify_s(Dn, Rec)
- return Reply
+ return Reply
def HandleChTOTPSeed(Reply, DnRecord, Key):
- # Generate a random seed
- seed = binascii.hexlify(open("/dev/urandom", "r").read(32))
- msg = GPGEncrypt("Your new TOTP seed is '%s'\n" % (seed,), "0x" + Key[1], Key[4])
+ # Generate a random seed
+ seed = binascii.hexlify(open("/dev/urandom", "r").read(32))
+ msg = GPGEncrypt("Your new TOTP seed is '%s'\n" % (seed,), "0x" + Key[1], Key[4])
- if msg is None:
- raise UDFormatError("Unable to generate the encrypted reply, gpg failed.")
+ if msg is None:
+ raise UDFormatError("Unable to generate the encrypted reply, gpg failed.")
- Subst = {}
- Subst["__FROM__"] = ChPassFrom
- Subst["__EMAIL__"] = EmailAddress(DnRecord)
- Subst["__PASSWORD__"] = msg
- Subst["__ADMIN__"] = ReplyTo
- Reply += TemplateSubst(Subst, open(TemplatesDir + "totp-seed-changed", "r").read())
+ Subst = {}
+ Subst["__FROM__"] = ChPassFrom
+ Subst["__EMAIL__"] = EmailAddress(DnRecord)
+ Subst["__PASSWORD__"] = msg
+ Subst["__ADMIN__"] = ReplyTo
+ Reply += TemplateSubst(Subst, open(TemplatesDir + "totp-seed-changed", "r").read())
- lc = connect_to_ldap_and_check_if_locked(DnRecord)
- # Modify the password
- Rec = [(ldap.MOD_REPLACE, "totpSeed", seed)]
- Dn = "uid=" + GetAttr(DnRecord, "uid") + "," + BaseDn
- lc.modify_s(Dn, Rec)
- return Reply
+ lc = connect_to_ldap_and_check_if_locked(DnRecord)
+ # Modify the password
+ Rec = [(ldap.MOD_REPLACE, "totpSeed", seed)]
+ Dn = "uid=" + GetAttr(DnRecord, "uid") + "," + BaseDn
+ lc.modify_s(Dn, Rec)
+ return Reply
def HandleChKrbPass(Reply, DnRecord, Key):
- # Connect to the ldap server, will throw an exception if account locked.
- lc = connect_to_ldap_and_check_if_locked(DnRecord)
-
- user = GetAttr(DnRecord, "uid")
- krb_proc = subprocess.Popen(('ud-krb-reset', user), stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
- krb_proc.stdin.close()
- out = krb_proc.stdout.readlines()
- krb_proc.wait()
- exitcode = krb_proc.returncode
-
- # Use GPG to encrypt it
- m = "Tried to reset your kerberos principal's password.\n"
- if exitcode == 0:
- m += "The exitcode of the reset script was zero, indicating that everything\n"
- m += "worked. However, this being software who knows. Script's output below."
- else:
- m += "The exitcode of the reset script was %d, indicating that something\n" % (exitcode,)
- m += "went terribly, terribly wrong. Please consult the script's output below\n"
- m += "for more information. Contact the admins if you have any questions or\n"
- m += "require assitance."
-
- m += "\n" + ''.join(map(lambda x: "| " + x, out))
-
- Message = GPGEncrypt(m, "0x" + Key[1], Key[4])
- if Message is None:
- raise UDFormatError("Unable to generate the encrypted reply, gpg failed.")
-
- Subst = {}
- Subst["__FROM__"] = ChPassFrom
- Subst["__EMAIL__"] = EmailAddress(DnRecord)
- Subst["__CRYPTTYPE__"] = get_crypttype_preamble(Key)
- Subst["__PASSWORD__"] = Message
- Subst["__ADMIN__"] = ReplyTo
- Reply += TemplateSubst(Subst, open(TemplatesDir + "passwd-changed", "r").read())
-
- return Reply
+ # Connect to the ldap server, will throw an exception if account locked.
+ lc = connect_to_ldap_and_check_if_locked(DnRecord)
+
+ user = GetAttr(DnRecord, "uid")
+ krb_proc = subprocess.Popen(('ud-krb-reset', user), stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
+ krb_proc.stdin.close()
+ out = krb_proc.stdout.readlines()
+ krb_proc.wait()
+ exitcode = krb_proc.returncode
+
+ # Use GPG to encrypt it
+ m = "Tried to reset your kerberos principal's password.\n"
+ if exitcode == 0:
+ m += "The exitcode of the reset script was zero, indicating that everything\n"
+ m += "worked. However, this being software who knows. Script's output below."
+ else:
+ m += "The exitcode of the reset script was %d, indicating that something\n" % (exitcode,)
+ m += "went terribly, terribly wrong. Please consult the script's output below\n"
+ m += "for more information. Contact the admins if you have any questions or\n"
+ m += "require assitance."
+
+ m += "\n" + ''.join(map(lambda x: "| " + x, out))
+
+ Message = GPGEncrypt(m, "0x" + Key[1], Key[4])
+ if Message is None:
+ raise UDFormatError("Unable to generate the encrypted reply, gpg failed.")
+
+ Subst = {}
+ Subst["__FROM__"] = ChPassFrom
+ Subst["__EMAIL__"] = EmailAddress(DnRecord)
+ Subst["__CRYPTTYPE__"] = get_crypttype_preamble(Key)
+ Subst["__PASSWORD__"] = Message
+ Subst["__ADMIN__"] = ReplyTo
+ Reply += TemplateSubst(Subst, open(TemplatesDir + "passwd-changed", "r").read())
+
+ return Reply
# Start of main program
# Drop messages from a mailer daemon.
if not os.environ.get('SENDER'):
- sys.exit(0)
+ sys.exit(0)
ErrMsg = "Indeterminate Error"
ErrType = EX_TEMPFAIL
try:
- # Startup the replay cache
- ErrType = EX_TEMPFAIL
- ErrMsg = "Failed to initialize the replay cache:"
-
- # Get the email
- ErrType = EX_PERMFAIL
- ErrMsg = "Failed to understand the email or find a signature:"
- mail = email.parser.Parser().parse(sys.stdin)
- Msg = GetClearSig(mail)
-
- ErrMsg = "Message is not PGP signed:"
- if Msg[0].find("-----BEGIN PGP SIGNED MESSAGE-----") == -1 and \
- Msg[0].find("-----BEGIN PGP MESSAGE-----") == -1:
- raise UDFormatError("No PGP signature")
-
- # Check the signature
- ErrMsg = "Unable to check the signature or the signature was invalid:"
- pgp = GPGCheckSig2(Msg[0])
-
- if not pgp.ok:
- raise UDFormatError(pgp.why)
-
- if pgp.text is None:
- raise UDFormatError("Null signature text")
-
- # Extract the plain message text in the event of mime encoding
- global PlainText
- ErrMsg = "Problem stripping MIME headers from the decoded message"
- if Msg[1] == 1:
- e = email.parser.Parser().parsestr(pgp.text)
- PlainText = e.get_payload(decode=True)
- else:
- PlainText = pgp.text
-
- # Connect to the ldap server
- ErrType = EX_TEMPFAIL
- ErrMsg = "An error occured while performing the LDAP lookup"
- global lc
- lc = connectLDAP()
- lc.simple_bind_s("", "")
-
- # Search for the matching key fingerprint
- Attrs = lc.search_s(BaseDn, ldap.SCOPE_ONELEVEL, "keyFingerPrint={}".format(pgp.key_fpr))
-
- ErrType = EX_PERMFAIL
- if len(Attrs) == 0:
- raise UDFormatError("Key not found")
- if len(Attrs) != 1:
- raise UDFormatError("Oddly your key fingerprint is assigned to more than one account..")
-
- # Check the signature against the replay cache
- RC = ReplayCache(ReplayCacheFile)
- RC.process(pgp.sig_info)
-
- # Determine the sender address
- ErrMsg = "A problem occured while trying to formulate the reply"
- Sender = mail.get('Reply-To', mail.get('From'))
- if not Sender:
- raise UDFormatError("Unable to determine the sender's address")
-
- # Formulate a reply
- Date = time.strftime("%a, %d %b %Y %H:%M:%S +0000", time.gmtime(time.time()))
- Reply = "To: %s\nReply-To: %s\nDate: %s\n" % (Sender, ReplyTo, Date)
-
- Res = lc.search_s(HostBaseDn, ldap.SCOPE_SUBTREE, '(objectClass=debianServer)', ['hostname'])
- # Res is a list of tuples.
- # The tuples contain a dn (str) and a dictionary.
- # The dictionaries map the key "hostname" to a list.
- # These lists contain a single hostname (str).
- ValidHostNames = reduce(lambda a, b: a + b, [value.get("hostname", []) for (dn, value) in Res], [])
-
- # Dispatch
- if sys.argv[1] == "ping":
- Reply = HandlePing(Reply, Attrs[0], pgp.key_info)
- elif sys.argv[1] == "chpass":
- if PlainText.strip().find("Please change my Debian password") >= 0:
- Reply = HandleChPass(Reply, Attrs[0], pgp.key_info)
- elif PlainText.strip().find("Please change my Kerberos password") >= 0:
- Reply = HandleChKrbPass(Reply, Attrs[0], pgp.key_info)
- elif PlainText.strip().find("Please change my TOTP seed") >= 0:
- Reply = HandleChTOTPSeed(Reply, Attrs[0], pgp.key_info)
- else:
- raise UDFormatError("Please send a signed message where the first line of text is the string 'Please change my Debian password' or some other string we accept here.")
- elif sys.argv[1] == "change":
- Reply = HandleChange(Reply, Attrs[0], pgp.key_info)
- else:
- print sys.argv
- raise UDFormatError("Incorrect Invokation")
-
- # Send the message through sendmail
- ErrMsg = "A problem occured while trying to send the reply"
- Child = os.popen("/usr/sbin/sendmail -t", "w")
-# Child = os.popen("cat","w")
- Child.write(Reply)
- if Child.close() is not None:
+ # Startup the replay cache
+ ErrType = EX_TEMPFAIL
+ ErrMsg = "Failed to initialize the replay cache:"
+
+ # Get the email
+ ErrType = EX_PERMFAIL
+ ErrMsg = "Failed to understand the email or find a signature:"
+ mail = email.parser.Parser().parse(sys.stdin)
+ Msg = GetClearSig(mail)
+
+ ErrMsg = "Message is not PGP signed:"
+ if Msg[0].find("-----BEGIN PGP SIGNED MESSAGE-----") == -1 and \
+ Msg[0].find("-----BEGIN PGP MESSAGE-----") == -1:
+ raise UDFormatError("No PGP signature")
+
+ # Check the signature
+ ErrMsg = "Unable to check the signature or the signature was invalid:"
+ pgp = GPGCheckSig2(Msg[0])
+
+ if not pgp.ok:
+ raise UDFormatError(pgp.why)
+
+ if pgp.text is None:
+ raise UDFormatError("Null signature text")
+
+ # Extract the plain message text in the event of mime encoding
+ global PlainText
+ ErrMsg = "Problem stripping MIME headers from the decoded message"
+ if Msg[1] == 1:
+ e = email.parser.Parser().parsestr(pgp.text)
+ PlainText = e.get_payload(decode=True)
+ else:
+ PlainText = pgp.text
+
+ # Connect to the ldap server
+ ErrType = EX_TEMPFAIL
+ ErrMsg = "An error occured while performing the LDAP lookup"
+ global lc
+ lc = connectLDAP()
+ lc.simple_bind_s("", "")
+
+ # Search for the matching key fingerprint
+ Attrs = lc.search_s(BaseDn, ldap.SCOPE_ONELEVEL, "keyFingerPrint={}".format(pgp.key_fpr))
+
+ ErrType = EX_PERMFAIL
+ if len(Attrs) == 0:
+ raise UDFormatError("Key not found")
+ if len(Attrs) != 1:
+ raise UDFormatError("Oddly your key fingerprint is assigned to more than one account..")
+
+ # Check the signature against the replay cache
+ RC = ReplayCache(ReplayCacheFile)
+ RC.process(pgp.sig_info)
+
+ # Determine the sender address
+ ErrMsg = "A problem occured while trying to formulate the reply"
+ Sender = mail.get('Reply-To', mail.get('From'))
+ if not Sender:
+ raise UDFormatError("Unable to determine the sender's address")
+
+ # Formulate a reply
+ Date = time.strftime("%a, %d %b %Y %H:%M:%S +0000", time.gmtime(time.time()))
+ Reply = "To: %s\nReply-To: %s\nDate: %s\n" % (Sender, ReplyTo, Date)
+
+ Res = lc.search_s(HostBaseDn, ldap.SCOPE_SUBTREE, '(objectClass=debianServer)', ['hostname'])
+ # Res is a list of tuples.
+ # The tuples contain a dn (str) and a dictionary.
+ # The dictionaries map the key "hostname" to a list.
+ # These lists contain a single hostname (str).
+ ValidHostNames = reduce(lambda a, b: a + b, [value.get("hostname", []) for (dn, value) in Res], [])
+
+ # Dispatch
+ if sys.argv[1] == "ping":
+ Reply = HandlePing(Reply, Attrs[0], pgp.key_info)
+ elif sys.argv[1] == "chpass":
+ if PlainText.strip().find("Please change my Debian password") >= 0:
+ Reply = HandleChPass(Reply, Attrs[0], pgp.key_info)
+ elif PlainText.strip().find("Please change my Kerberos password") >= 0:
+ Reply = HandleChKrbPass(Reply, Attrs[0], pgp.key_info)
+ elif PlainText.strip().find("Please change my TOTP seed") >= 0:
+ Reply = HandleChTOTPSeed(Reply, Attrs[0], pgp.key_info)
+ else:
+ raise UDFormatError("Please send a signed message where the first line of text is the string 'Please change my Debian password' or some other string we accept here.")
+ elif sys.argv[1] == "change":
+ Reply = HandleChange(Reply, Attrs[0], pgp.key_info)
+ else:
+ print sys.argv
+ raise UDFormatError("Incorrect Invokation")
+
+ # Send the message through sendmail
+ ErrMsg = "A problem occured while trying to send the reply"
+ Child = os.popen("/usr/sbin/sendmail -t", "w")
+ # Child = os.popen("cat","w")
+ Child.write(Reply)
+ if Child.close() is not None:
raise UDExecuteError("Sendmail gave a non-zero return code")
except Exception:
sys.exit(0)
# vim:set et:
-# vim:set ts=3:
-# vim:set shiftwidth=3:
+# vim:set ts=4:
+# vim:set shiftwidth=4:
projects / mirror / userdir-ldap.git / commitdiff