From ee1c499467c2c973b088beb4ddbc58e8c7cbf8ed Mon Sep 17 00:00:00 2001
From: Anand <anandology@gmail.com>
Date: Sat, 15 Dec 2007 11:48:20 +0530
Subject: [PATCH] New functions: sendmail, emailerrors (pulled from webpy.dev)

---
 trunk/web/debugerror.py | 48 ++++++++++++++++++++++++++++++++++++++---
 trunk/web/net.py        |  2 --
 trunk/web/utils.py      | 32 +++++++++++++++++++++++++--
 3 files changed, 75 insertions(+), 7 deletions(-)

diff --git a/trunk/web/debugerror.py b/trunk/web/debugerror.py
index 1de465a8..a84f23c1 100644
--- a/trunk/web/debugerror.py
+++ b/trunk/web/debugerror.py
@@ -2,17 +2,18 @@
 pretty debug errors
 (part of web.py)
 
-adapted from Django <djangoproject.com> 
+portions adapted from Django <djangoproject.com> 
 Copyright (c) 2005, the Lawrence Journal-World
 Used under the modified BSD license:
 http://www.xfree86.org/3.3.6/COPYRIGHT2.html#5
 """
 
-__all__ = ["debugerror", "djangoerror"]
+__all__ = ["debugerror", "djangoerror", "emailerrors"]
 
-import sys, urlparse, pprint
+import sys, urlparse, pprint, traceback
 from net import websafe
 from template import Template
+from utils import sendmail
 import webapi as web
 
 import os, os.path
@@ -303,6 +304,47 @@ def debugerror():
     web.ctx.headers = [('Content-Type', 'text/html')]
     web.ctx.output = djangoerror()
 
+def emailerrors(email_address, olderror):
+    """
+    Wraps the old `internalerror` handler (pass as `olderror`) to 
+    additionally email all errors to `email_address`, to aid in 
+    debugging production websites.
+    
+    Emails contain a normal text traceback as well as an
+    attachment containing the nice `debugerror` page.
+    """
+    def emailerrors_internal():
+        olderror()
+        tb = sys.exc_info()
+        error_name = tb[0]
+        error_value = tb[1]
+        tb_txt = ''.join(traceback.format_exception(*tb))
+        path = web.ctx.path
+        request = web.ctx.method+' '+web.ctx.home+web.ctx.fullpath
+        eaddr = email_address
+        text = ("""\
+From: your buggy site <%(eaddr)s>
+To: the bugfixer <%(eaddr)s>
+Subject: bug: %(error_name)s: %(error_value)s (%(path)s)
+Content-Type: multipart/mixed; boundary="----here----"
+
+------here----
+Content-Type: text/plain
+Content-Disposition: inline
+
+%(request)s
+
+%(tb_txt)s
+
+------here----
+Content-Type: text/html; name="bug.html"
+Content-Disposition: attachment; filename="bug.html"
+
+""" % locals()) + str(djangoerror())
+        sendmail(email_address, email_address, text)
+    
+    return emailerrors_internal
+
 if __name__ == "__main__":
     urls = (
         '/', 'index'
diff --git a/trunk/web/net.py b/trunk/web/net.py
index 55a41b4d..1e6bb8a8 100644
--- a/trunk/web/net.py
+++ b/trunk/web/net.py
@@ -146,8 +146,6 @@ def htmlunquote(text):
     text = text.replace("&amp;", "&") # Must be done last!
     return text
 
-
-
 def websafe(val):
     """
     Converts `val` so that it's safe for use in UTF-8 HTML.
diff --git a/trunk/web/utils.py b/trunk/web/utils.py
index 6802ac37..45003551 100644
--- a/trunk/web/utils.py
+++ b/trunk/web/utils.py
@@ -20,10 +20,11 @@
   "ThreadedDict",
   "autoassign",
   "to36",
-  "safemarkdown"
+  "safemarkdown",
+  "sendmail"
 ]
 
-import re, sys, time, threading
+import re, sys, time, threading, os
 try: import datetime
 except ImportError: pass
 
@@ -790,6 +791,33 @@ def safemarkdown(text):
         text = markdown(text)
         return text
 
+def sendmail(from_address, to_address, message):
+    """
+    Sends the email message `message` to `to_address` with the
+    envelope sender set to `from_address`.
+
+    If `web.config.smtp_server` is set, it will send the message
+    to that SMTP server. Otherwise it will look for
+    `/usr/lib/sendmail`, the typical location for the sendmail-style
+    binary.
+    """
+    try:
+        import webapi
+    except ImportError:
+        webapi = Storage(config=storage())
+
+    if webapi.config.get('smtp_server'):
+        import smtplib
+        smtpserver = smtplib.SMTP(web.config.smtp_server)
+        smtpserver.sendmail(from_address, [to_address], message)
+        smtpserver.quit()
+    else:
+        assert not from_address.startswith('-') and not to_address.startswith('-'), 'security'
+        i, o = os.popen2(["/usr/lib/sendmail", '-f', from_address, to_address])
+        i.write(message)
+        i.close()
+        o.close()
+        del i, o
 
 if __name__ == "__main__":
     import doctest