TLD_Builder/mailer.py

   1 # vi: encoding=utf-8 ts=8 sts=4 sw=4 et
   2
   3 import time
   4 import os
   5 import sys
   6 import StringIO
   7
   8 from config import config
   9 import util
  10 import log
  11
  12 def recode(s):
  13     if s.__class__ == ''.__class__:
  14         return s.decode('iso-8859-1', 'replace').encode('us-ascii', 'replace')
  15     else:
  16         return s.encode('us-ascii', 'replace')
  17
  18 class Message:
  19     def __init__(self):
  20         self.headers = {}
  21         self.body = StringIO.StringIO()
  22         self.set_std_headers()
  23
  24     def set_header(self, n, v):
  25         self.headers[n] = v
  26
  27     def set_headers(self, to = None, cc = None, subject = None):
  28         if to != None:
  29             self.set_header("To", to)
  30         if cc != None:
  31             self.set_header("Cc", cc)
  32         if subject != None:
  33             self.set_header("Subject", subject)
  34
  35     def remove_header(self, n):
  36         if n in self.headers:
  37             del self.headers[n]
  38
  39     def write_line(self, l):
  40         self.body.write(recode("%s\n" % l))
  41
  42     def write(self, s):
  43         self.body.write(recode(s))
  44
  45     def append_log(self, log):
  46         s = os.stat(log)
  47         if s.st_size > 50000:
  48             # just head and tail
  49             f = open(log)
  50             line_cnt = 0
  51             for l in f.xreadlines():
  52                 line_cnt += 1
  53             f.seek(0)
  54             line = 0
  55             for l in f.xreadlines():
  56                 if line < 100 or line > line_cnt - 100:
  57                     self.body.write(recode(l))
  58                 if line == line_cnt - 100:
  59                     self.body.write("\n\n[...]\n\n")
  60                 line += 1
  61         else:
  62             util.sendfile(open(log), self.body)
  63
  64     def set_std_headers(self):
  65         self.headers["Date"] = time.strftime("%a, %d %b %Y %H:%M:%S +0000", time.gmtime())
  66         self.headers["Message-ID"] = "<tld-builder.%f.%d@%s>" \
  67                 % (time.time(), os.getpid(), os.uname()[1])
  68         self.headers["From"] = "TLD %s builder <%s>" \
  69                 % (config.builder, config.email)
  70         self.headers["X-TLD-Builder"] = config.builder
  71
  72     def write_to(self, f):
  73         for k, v in self.headers.items():
  74             f.write("%s: %s\n" % (k, v))
  75         f.write("\n")
  76         self.body.seek(0)
  77         util.sendfile(self.body, f)
  78
  79     def send(self):
  80         if not os.path.exists("/usr/lib/sendmail"):
  81             # TODO: dump to file?
  82             log.alert("/usr/lib/sendmail doesn't exist: Can't send email")
  83             return False
  84         send_sendmail = "/usr/lib/sendmail -i -t -f %s" % config.admin_email
  85         f = os.popen(send_sendmail, "w")
  86         try:
  87             self.write_to(f)
  88         except IOError, e:
  89             log.alert("sending email message failed: %s" % e)
  90             f.close()
  91             return False
  92         return f.close()