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1 #!/usr/bin/env python |
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2 # -*- coding: UTF-8 -*- |
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3 |
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4 """ |
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5 Sends information about uncaught exceptions per email. |
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6 |
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7 """ |
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8 |
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9 import sys |
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10 import smtplib |
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11 import traceback |
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12 from os import environ as env |
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13 from time import ctime, gmtime, localtime, strftime, time |
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14 |
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15 # make sure that the web server can write to this file |
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16 mail_error_file = '/tmp/mailtb_error.log' |
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17 mail_config = {# sender information |
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18 'from_addr': '', |
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19 'from_name': '', |
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20 # smtp auth information (if necessary, else leave blank) |
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21 'auth_user': '', |
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22 'auth_pass': '', |
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23 # recipient information |
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24 'rcpt_addr': '', |
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25 'rcpt_name': '', |
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26 # smtp server information |
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27 'smtp_host': 'localhost', |
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28 'smtp_port': 25, # 25 smtp, 587 submission, 465 ssmtp (obsolete) |
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29 'smtp_tls': False, # True or False (use starttls on port 25/587) |
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30 # subject of the email |
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31 'subject': 'Exception Notification' |
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32 } |
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33 |
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34 def log_mail_error(error, timestamp): |
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35 try: |
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36 prefix = strftime('%b %d %H:%M:%S', localtime(timestamp)) |
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37 line = error.message if len(error.message) else error.args |
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38 logfile = open(mail_error_file, 'a') |
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39 logfile.write('%s %s: %s\n' % (prefix, error.__class__.__name__, line)) |
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40 logfile.close() |
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41 except: |
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42 pass |
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43 |
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44 def send_header(): |
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45 write = sys.stdout.write |
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46 #write('Content-Type: text/html; charset=utf-8\r\n') |
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47 write('Content-Type: application/xhtml+xml; charset=utf-8\r\n') |
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48 write('Status: 500 Internal Server Error\r\n\r\n') |
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49 sys.stdout.flush() |
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50 |
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51 def send_error_page(): |
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52 send_header() |
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53 print """<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" |
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54 "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"> |
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55 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="de"> |
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56 <head> |
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57 <title>Internal Server Error</title> |
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58 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> |
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59 </head> |
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60 <body> |
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61 <h1>Internal Server Error</h1> |
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62 <p>So wie es aussieht, ging bei der Bearbeitung Ihrer Anfrage etwas |
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63 schief.</p> |
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64 <p>Sofern Sie den Fehler verursacht haben, dürfen Sie jetzt ein schlechtes |
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65 Gewissen haben.<br /> |
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66 Die Administration wird sich bei nächster Gelegenheit um das Problem |
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67 kümmern. Bitte haben Sie dafür etwas Verständnis.</p> |
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68 <h2>Error 500</h2> |
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69 <p>Sorry</p> |
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70 </body> |
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71 </html>""" |
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72 |
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73 def send_mail(info): |
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74 global mail_config |
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75 mail_config['now'] = time() |
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76 mail_config['host'] = info['host'] if info['host'] != 'n/a' else 'localhost' |
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77 mail_config['date'] = strftime('%a, %d %b %Y %H:%M:%S +0000', |
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78 gmtime(mail_config['now'])) |
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79 body = """Hi, |
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80 |
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81 an uncaught exception has occurred. The details are as follows: |
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82 |
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83 Type: %(extype)s |
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84 Message: %(message)s |
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85 |
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86 Traceback (most recent call last): |
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87 %(traceback)s |
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88 |
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89 Additional information: |
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90 Date: %(date)s |
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91 Request: %(method)s %(uri)s %(protocol)s |
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92 Referrer: %(referer)s |
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93 Client: %(addr)s/%(port)s |
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94 U-Agent: %(agent)s |
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95 """ % info |
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96 header = """Date: %(date)s |
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97 From: "%(from_name)s" <%(from_addr)s> |
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98 To: "%(rcpt_name)s" <%(rcpt_addr)s> |
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99 Subject: %(subject)s |
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100 Message-ID: <%(now)f.%(now)X@mailtb.%(host)s> |
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101 Auto-Submitted: auto-generated |
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102 MIME-Version: 1.0 |
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103 Content-Type: text/plain; charset=utf-8 |
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104 Content-Transfer-Encoding: 8bit |
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105 """ % mail_config |
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106 |
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107 try: |
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108 if mail_config['smtp_port'] != 465: |
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109 smtp = smtplib.SMTP(mail_config['smtp_host'], |
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110 mail_config['smtp_port']) |
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111 if mail_config['smtp_tls']: |
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112 smtp.starttls() |
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113 else: |
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114 smtp = smtplib.SMTP_SSL(mail_config['smtp_host'], |
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115 mail_config['smtp_port']) |
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116 if len(mail_config['auth_user']) and len(mail_config['auth_pass']): |
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117 smtp.login(mail_config['auth_user'], mail_config['auth_pass']) |
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118 smtp.sendmail(mail_config['from_addr'], mail_config['rcpt_addr'], |
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119 '\n'.join((header, body))) |
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120 except Exception, e: |
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121 # try to log it (fire and forget) |
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122 log_mail_error(e, mail_config['now']) |
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123 finally: |
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124 smtp.quit() |
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125 |
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126 def mailtbhook(extype, exval, extb): |
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127 info = {} |
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128 if type(extype) is type: |
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129 info['extype'] = extype.__name__ |
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130 else: |
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131 info['extype'] = str(extype).split("'")[1] |
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132 if hasattr(exval, 'message'): |
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133 info['message'] = exval.message if len(exval.message) else 'n/a' |
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134 else: |
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135 info['message'] = str(exval) |
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136 info['traceback'] = ''.join(['%s\n' % l for l in traceback.format_tb(extb)]) |
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137 |
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138 info['date'] = ctime() |
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139 for k in ('HTTP_HOST', 'HTTP_REFERER', 'HTTP_USER_AGENT', 'REMOTE_ADDR', |
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140 'REMOTE_PORT', 'REQUEST_METHOD', 'REQUEST_URI', 'SERVER_PROTOCOL'): |
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141 info[k.split('_')[-1].lower()] = env[k] if env.has_key(k) else 'n/a' |
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142 |
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143 send_mail(info) |
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144 send_error_page() |
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145 |
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146 def enable(): |
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147 sys.excepthook = mailtbhook |