| 1 | # -*- coding: utf-8 -*- |
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| 2 | # |
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| 3 | # Copyright (C) 2003-2005 Edgewall Software |
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| 4 | # Copyright (C) 2003-2005 Jonas Borgström <jonas@edgewall.com> |
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| 5 | # Copyright (C) 2005 Christopher Lenz <cmlenz@gmx.de> |
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| 6 | # All rights reserved. |
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| 7 | # |
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| 8 | # This software is licensed as described in the file COPYING, which |
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| 9 | # you should have received as part of this distribution. The terms |
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| 10 | # are also available at http://trac.edgewall.com/license.html. |
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| 11 | # |
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| 12 | # This software consists of voluntary contributions made by many |
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| 13 | # individuals. For the exact contribution history, see the revision |
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| 14 | # history and logs, available at http://projects.edgewall.com/trac/. |
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| 15 | # |
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| 16 | # Author: Jonas Borgström <jonas@edgewall.com> |
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| 17 | # Christopher Lenz <cmlenz@gmx.de> |
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| 18 | |
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| 19 | from __future__ import generators |
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| 20 | import os |
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| 21 | import re |
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| 22 | import shutil |
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| 23 | import time |
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| 24 | import urllib |
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| 25 | |
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| 26 | from trac import perm, util |
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| 27 | from trac.core import * |
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| 28 | from trac.env import IEnvironmentSetupParticipant |
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| 29 | from trac.mimeview import * |
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| 30 | from trac.web import IRequestHandler |
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| 31 | from trac.web.chrome import add_link, add_stylesheet, INavigationContributor |
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| 32 | from trac.wiki import IWikiSyntaxProvider |
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| 33 | |
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| 34 | |
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| 35 | class Attachment(object): |
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| 36 | |
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| 37 | def __init__(self, env, parent_type, parent_id, filename=None, db=None): |
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| 38 | self.env = env |
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| 39 | self.parent_type = parent_type |
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| 40 | self.parent_id = str(parent_id) |
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| 41 | if filename: |
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| 42 | self._fetch(filename, db) |
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| 43 | else: |
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| 44 | self.filename = None |
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| 45 | self.description = None |
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| 46 | self.size = None |
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| 47 | self.time = None |
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| 48 | self.author = None |
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| 49 | self.ipnr = None |
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| 50 | |
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| 51 | def _fetch(self, filename, db=None): |
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| 52 | if not db: |
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| 53 | db = self.env.get_db_cnx() |
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| 54 | cursor = db.cursor() |
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| 55 | cursor.execute("SELECT filename,description,size,time,author,ipnr " |
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| 56 | "FROM attachment WHERE type=%s AND id=%s " |
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| 57 | "AND filename=%s ORDER BY time", |
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| 58 | (self.parent_type, str(self.parent_id), filename)) |
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| 59 | row = cursor.fetchone() |
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| 60 | cursor.close() |
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| 61 | if not row: |
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| 62 | self.filename = filename |
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| 63 | raise TracError('Attachment %s does not exist.' % (self.title), |
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| 64 | 'Invalid Attachment') |
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| 65 | self.filename = row[0] |
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| 66 | self.description = row[1] |
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| 67 | self.size = row[2] and int(row[2]) or 0 |
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| 68 | self.time = row[3] and int(row[3]) or 0 |
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| 69 | self.author = row[4] |
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| 70 | self.ipnr = row[5] |
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| 71 | |
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| 72 | def _get_path(self): |
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| 73 | path = os.path.join(self.env.path, 'attachments', self.parent_type, |
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| 74 | urllib.quote(self.parent_id)) |
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| 75 | if self.filename: |
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| 76 | path = os.path.join(path, urllib.quote(self.filename)) |
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| 77 | return os.path.normpath(path) |
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| 78 | path = property(_get_path) |
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| 79 | |
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| 80 | def href(self,*args,**dict): |
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| 81 | return self.env.href.attachment(self.parent_type, self.parent_id, |
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| 82 | self.filename, *args, **dict) |
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| 83 | |
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| 84 | def _get_title(self): |
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| 85 | return '%s%s: %s' % (self.parent_type == 'ticket' and '#' or '', |
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| 86 | self.parent_id, self.filename) |
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| 87 | title = property(_get_title) |
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| 88 | |
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| 89 | def _get_parent_href(self): |
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| 90 | return self.env.href(self.parent_type, self.parent_id) |
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| 91 | parent_href = property(_get_parent_href) |
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| 92 | |
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| 93 | def delete(self, db=None): |
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| 94 | assert self.filename, 'Cannot delete non-existent attachment' |
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| 95 | if not db: |
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| 96 | db = self.env.get_db_cnx() |
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| 97 | handle_ta = True |
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| 98 | else: |
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| 99 | handle_ta = False |
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| 100 | |
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| 101 | cursor = db.cursor() |
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| 102 | cursor.execute("DELETE FROM attachment WHERE type=%s AND id=%s " |
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| 103 | "AND filename=%s", (self.parent_type, self.parent_id, |
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| 104 | self.filename)) |
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| 105 | if os.path.isfile(self.path): |
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| 106 | try: |
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| 107 | os.unlink(self.path) |
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| 108 | except OSError: |
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| 109 | self.env.log.error('Failed to delete attachment file %s', |
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| 110 | self.path, exc_info=True) |
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| 111 | if handle_ta: |
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| 112 | db.rollback() |
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| 113 | raise TracError, 'Could not delete attachment' |
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| 114 | |
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| 115 | self.env.log.info('Attachment removed: %s' % self.title) |
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| 116 | if handle_ta: |
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| 117 | db.commit() |
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| 118 | |
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| 119 | def insert(self, filename, fileobj, size, t=None, db=None): |
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| 120 | if not db: |
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| 121 | db = self.env.get_db_cnx() |
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| 122 | handle_ta = True |
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| 123 | else: |
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| 124 | handle_ta = False |
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| 125 | |
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| 126 | # Maximum attachment size (in bytes) |
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| 127 | max_size = int(self.env.config.get('attachment', 'max_size')) |
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| 128 | if max_size >= 0 and size > max_size: |
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| 129 | raise TracError('Maximum attachment size: %d bytes' % max_size, |
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| 130 | 'Upload failed') |
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| 131 | self.size = size |
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| 132 | self.time = t or time.time() |
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| 133 | |
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| 134 | # Make sure the path to the attachment is inside the environment |
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| 135 | # attachments directory |
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| 136 | attachments_dir = os.path.join(os.path.normpath(self.env.path), |
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| 137 | 'attachments') |
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| 138 | commonprefix = os.path.commonprefix([attachments_dir, self.path]) |
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| 139 | assert commonprefix == attachments_dir |
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| 140 | |
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| 141 | if not os.access(self.path, os.F_OK): |
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| 142 | os.makedirs(self.path) |
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| 143 | filename = urllib.quote(filename) |
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| 144 | path, targetfile = util.create_unique_file(os.path.join(self.path, |
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| 145 | filename)) |
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| 146 | try: |
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| 147 | filename = urllib.unquote(os.path.basename(path)) |
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| 148 | |
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| 149 | cursor = db.cursor() |
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| 150 | cursor.execute("INSERT INTO attachment " |
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| 151 | "VALUES (%s,%s,%s,%s,%s,%s,%s,%s)", |
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| 152 | (self.parent_type, self.parent_id, filename, |
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| 153 | self.size, self.time, self.description, self.author, |
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| 154 | self.ipnr)) |
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| 155 | shutil.copyfileobj(fileobj, targetfile) |
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| 156 | self.filename = filename |
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| 157 | |
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| 158 | self.env.log.info('New attachment: %s by %s', self.title, |
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| 159 | self.author) |
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| 160 | if handle_ta: |
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| 161 | db.commit() |
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| 162 | finally: |
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| 163 | targetfile.close() |
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| 164 | |
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| 165 | def select(cls, env, parent_type, parent_id, db=None): |
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| 166 | if not db: |
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| 167 | db = env.get_db_cnx() |
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| 168 | cursor = db.cursor() |
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| 169 | cursor.execute("SELECT filename,description,size,time,author,ipnr " |
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| 170 | "FROM attachment WHERE type=%s AND id=%s ORDER BY time", |
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| 171 | (parent_type, str(parent_id))) |
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| 172 | for filename,description,size,time,author,ipnr in cursor: |
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| 173 | attachment = Attachment(env, parent_type, parent_id) |
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| 174 | attachment.filename = filename |
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| 175 | attachment.description = description |
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| 176 | attachment.size = size |
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| 177 | attachment.time = time |
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| 178 | attachment.author = author |
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| 179 | attachment.ipnr = ipnr |
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| 180 | yield attachment |
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| 181 | |
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| 182 | select = classmethod(select) |
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| 183 | |
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| 184 | def open(self): |
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| 185 | self.env.log.debug('Trying to open attachment at %s', self.path) |
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| 186 | try: |
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| 187 | fd = open(self.path, 'rb') |
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| 188 | except IOError: |
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| 189 | raise TracError('Attachment %s not found' % self.filename) |
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| 190 | return fd |
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| 191 | |
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| 192 | |
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| 193 | def attachment_to_hdf(env, db, req, attachment): |
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| 194 | from trac.wiki import wiki_to_oneliner |
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| 195 | if not db: |
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| 196 | db = env.get_db_cnx() |
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| 197 | hdf = { |
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| 198 | 'filename': attachment.filename, |
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| 199 | 'description': wiki_to_oneliner(attachment.description, env, db), |
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| 200 | 'author': attachment.author, |
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| 201 | 'ipnr': attachment.ipnr, |
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| 202 | 'size': util.pretty_size(attachment.size), |
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| 203 | 'time': util.format_datetime(attachment.time), |
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| 204 | 'href': attachment.href() |
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| 205 | } |
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| 206 | return hdf |
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| 207 | |
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| 208 | |
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| 209 | class AttachmentModule(Component): |
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| 210 | |
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| 211 | implements(IEnvironmentSetupParticipant, IRequestHandler, |
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| 212 | INavigationContributor, IWikiSyntaxProvider) |
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| 213 | |
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| 214 | CHUNK_SIZE = 4096 |
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| 215 | |
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| 216 | # IEnvironmentSetupParticipant methods |
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| 217 | |
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| 218 | def environment_created(self): |
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| 219 | """Create the attachments directory.""" |
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| 220 | if self.env.path: |
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| 221 | os.mkdir(os.path.join(self.env.path, 'attachments')) |
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| 222 | |
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| 223 | def environment_needs_upgrade(self, db): |
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| 224 | return False |
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| 225 | |
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| 226 | def upgrade_environment(self, db): |
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| 227 | pass |
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| 228 | |
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| 229 | # INavigationContributor methods |
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| 230 | |
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| 231 | def get_active_navigation_item(self, req): |
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| 232 | return req.args.get('type') |
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| 233 | |
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| 234 | def get_navigation_items(self, req): |
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| 235 | return [] |
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| 236 | |
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| 237 | # IReqestHandler methods |
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| 238 | |
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| 239 | def match_request(self, req): |
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| 240 | match = re.match(r'^/attachment/(ticket|wiki)(?:/(.*))?$', req.path_info) |
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| 241 | if match: |
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| 242 | req.args['type'] = match.group(1) |
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| 243 | req.args['path'] = match.group(2) |
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| 244 | return 1 |
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| 245 | |
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| 246 | def process_request(self, req): |
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| 247 | parent_type = req.args.get('type') |
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| 248 | path = req.args.get('path') |
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| 249 | if not parent_type or not path: |
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| 250 | raise TracError('Bad request') |
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| 251 | if not parent_type in ['ticket', 'wiki']: |
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| 252 | raise TracError('Unknown attachment type') |
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| 253 | |
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| 254 | action = req.args.get('action', 'view') |
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| 255 | if action == 'new': |
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| 256 | attachment = Attachment(self.env, parent_type, path) |
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| 257 | else: |
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| 258 | segments = path.split('/') |
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| 259 | parent_id = '/'.join(segments[:-1]) |
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| 260 | filename = segments[-1] |
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| 261 | if len(segments) == 1 or not filename: |
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| 262 | raise TracError('Bad request') |
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| 263 | attachment = Attachment(self.env, parent_type, parent_id, filename) |
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| 264 | |
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| 265 | if req.method == 'POST': |
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| 266 | if action == 'new': |
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| 267 | self._do_save(req, attachment) |
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| 268 | elif action == 'delete': |
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| 269 | self._do_delete(req, attachment) |
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| 270 | elif action == 'delete': |
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| 271 | self._render_confirm(req, attachment) |
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| 272 | elif action == 'new': |
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| 273 | self._render_form(req, attachment) |
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| 274 | else: |
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| 275 | self._render_view(req, attachment) |
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| 276 | |
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| 277 | add_stylesheet(req, 'common/css/code.css') |
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| 278 | return 'attachment.cs', None |
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| 279 | |
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| 280 | # IWikiSyntaxProvider methods |
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| 281 | |
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| 282 | def get_wiki_syntax(self): |
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| 283 | return [] |
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| 284 | |
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| 285 | def get_link_resolvers(self): |
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| 286 | yield ('attachment', self._format_link) |
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| 287 | |
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| 288 | # Internal methods |
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| 289 | |
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| 290 | def _do_save(self, req, attachment): |
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| 291 | perm_map = {'ticket': 'TICKET_APPEND', 'wiki': 'WIKI_MODIFY'} |
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| 292 | req.perm.assert_permission(perm_map[attachment.parent_type]) |
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| 293 | |
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| 294 | if req.args.has_key('cancel'): |
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| 295 | req.redirect(attachment.parent_href) |
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| 296 | |
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| 297 | upload = req.args['attachment'] |
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| 298 | if not upload.filename: |
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| 299 | raise TracError, 'No file uploaded' |
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| 300 | if hasattr(upload.file, 'fileno'): |
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| 301 | size = os.fstat(upload.file.fileno())[6] |
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| 302 | else: |
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| 303 | size = upload.file.len |
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| 304 | if size == 0: |
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| 305 | raise TracError, 'No file uploaded' |
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| 306 | |
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| 307 | filename = upload.filename.replace('\\', '/').replace(':', '/') |
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| 308 | filename = os.path.basename(filename) |
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| 309 | assert filename, 'No file uploaded' |
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| 310 | |
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| 311 | # We try to normalize the filename to utf-8 NFC if we can. |
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| 312 | # Files uploaded from OS X might be in NFD. |
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| 313 | import sys, unicodedata |
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| 314 | if sys.version_info[0] > 2 or \ |
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| 315 | (sys.version_info[0] == 2 and sys.version_info[1] >= 3): |
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| 316 | filename = unicodedata.normalize('NFC', |
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| 317 | unicode(filename, |
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| 318 | 'utf-8')).encode('utf-8') |
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| 319 | |
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| 320 | attachment.description = req.args.get('description', '') |
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| 321 | attachment.author = req.args.get('author', '') |
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| 322 | attachment.ipnr = req.remote_addr |
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| 323 | if req.args.get('replace'): |
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| 324 | try: |
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| 325 | old_attachment = Attachment(self.env, attachment.parent_type, |
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| 326 | attachment.parent_id, filename) |
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| 327 | if not (old_attachment.author and req.authname \ |
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| 328 | and old_attachment.author == req.authname): |
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| 329 | perm_map = {'ticket': 'TICKET_ADMIN', 'wiki': 'WIKI_DELETE'} |
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| 330 | req.perm.assert_permission(perm_map[old_attachment.parent_type]) |
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| 331 | old_attachment.delete() |
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| 332 | except TracError: |
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| 333 | pass # don't worry if there's nothing to replace |
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| 334 | attachment.filename = None |
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| 335 | attachment.insert(filename, upload.file, size) |
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| 336 | |
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| 337 | # Redirect the user to the newly created attachment |
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| 338 | req.redirect(attachment.href()) |
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| 339 | |
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| 340 | def _do_delete(self, req, attachment): |
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| 341 | perm_map = {'ticket': 'TICKET_ADMIN', 'wiki': 'WIKI_DELETE'} |
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| 342 | req.perm.assert_permission(perm_map[attachment.parent_type]) |
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| 343 | |
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| 344 | if req.args.has_key('cancel'): |
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| 345 | req.redirect(attachment.href()) |
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| 346 | |
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| 347 | attachment.delete() |
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| 348 | |
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| 349 | # Redirect the user to the attachment parent page |
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| 350 | req.redirect(attachment.parent_href) |
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| 351 | |
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| 352 | def _get_parent_link(self, attachment): |
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| 353 | if attachment.parent_type == 'ticket': |
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| 354 | return ('チケット #' + attachment.parent_id, attachment.parent_href) |
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| 355 | elif attachment.parent_type == 'wiki': |
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| 356 | return (attachment.parent_id, attachment.parent_href) |
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| 357 | return (None, None) |
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| 358 | |
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| 359 | def _render_confirm(self, req, attachment): |
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| 360 | perm_map = {'ticket': 'TICKET_ADMIN', 'wiki': 'WIKI_DELETE'} |
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| 361 | req.perm.assert_permission(perm_map[attachment.parent_type]) |
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| 362 | |
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| 363 | req.hdf['title'] = '%s (削除)' % attachment.title |
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| 364 | text, link = self._get_parent_link(attachment) |
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| 365 | req.hdf['attachment'] = { |
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| 366 | 'filename': attachment.filename, |
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| 367 | 'mode': 'delete', |
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| 368 | 'parent': {'type': attachment.parent_type, |
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| 369 | 'id': attachment.parent_id, 'name': text, 'href': link} |
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| 370 | } |
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| 371 | |
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| 372 | def _render_form(self, req, attachment): |
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| 373 | perm_map = {'ticket': 'TICKET_APPEND', 'wiki': 'WIKI_MODIFY'} |
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| 374 | req.perm.assert_permission(perm_map[attachment.parent_type]) |
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| 375 | |
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| 376 | text, link = self._get_parent_link(attachment) |
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| 377 | req.hdf['attachment'] = { |
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| 378 | 'mode': 'new', |
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| 379 | 'author': util.get_reporter_id(req), |
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| 380 | 'parent': {'type': attachment.parent_type, |
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| 381 | 'id': attachment.parent_id, 'name': text, 'href': link} |
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| 382 | } |
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| 383 | |
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| 384 | def _render_view(self, req, attachment): |
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| 385 | perm_map = {'ticket': 'TICKET_VIEW', 'wiki': 'WIKI_VIEW'} |
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| 386 | req.perm.assert_permission(perm_map[attachment.parent_type]) |
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| 387 | |
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| 388 | req.check_modified(attachment.time) |
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| 389 | |
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| 390 | # Render HTML view |
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| 391 | text, link = self._get_parent_link(attachment) |
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| 392 | add_link(req, 'up', link, text) |
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| 393 | |
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| 394 | req.hdf['title'] = attachment.title |
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| 395 | req.hdf['attachment'] = attachment_to_hdf(self.env, None, req, attachment) |
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| 396 | req.hdf['attachment.parent'] = { |
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| 397 | 'type': attachment.parent_type, 'id': attachment.parent_id, |
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| 398 | 'name': text, 'href': link, |
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| 399 | } |
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| 400 | |
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| 401 | perm_map = {'ticket': 'TICKET_ADMIN', 'wiki': 'WIKI_DELETE'} |
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| 402 | if req.perm.has_permission(perm_map[attachment.parent_type]): |
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| 403 | req.hdf['attachment.can_delete'] = 1 |
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| 404 | |
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| 405 | fd = attachment.open() |
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| 406 | try: |
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| 407 | mimeview = Mimeview(self.env) |
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| 408 | max_preview_size = mimeview.max_preview_size() |
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| 409 | data = fd.read(max_preview_size) |
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| 410 | |
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| 411 | mime_type = get_mimetype(attachment.filename) or \ |
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| 412 | 'application/octet-stream' |
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| 413 | self.log.debug("Rendering preview of file %s with mime-type %s" |
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| 414 | % (attachment.filename, mime_type)) |
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| 415 | |
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| 416 | raw_href = attachment.href(format='raw') |
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| 417 | add_link(req, 'alternate', raw_href, 'Original Format', mime_type) |
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| 418 | req.hdf['attachment.raw_href'] = raw_href |
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| 419 | |
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| 420 | format = req.args.get('format') |
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| 421 | render_unsafe = self.config.getbool('attachment', |
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| 422 | 'render_unsafe_content') |
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| 423 | binary = not detect_unicode(data) and is_binary(data) |
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| 424 | |
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| 425 | if format in ('raw', 'txt'): # Send raw file |
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| 426 | if not render_unsafe and not binary: |
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| 427 | # Force browser to download HTML/SVG/etc pages that may |
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| 428 | # contain malicious code enabling XSS attacks |
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| 429 | req.send_header('Content-Disposition', 'attachment;' + |
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| 430 | 'filename=' + attachment.filename) |
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| 431 | charset = mimeview.get_charset(data, mime_type) |
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| 432 | if render_unsafe and not binary and format == 'txt': |
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| 433 | mime_type = 'text/plain' |
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| 434 | req.send_file(attachment.path, |
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| 435 | mime_type + ';charset=' + charset) |
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| 436 | |
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| 437 | if render_unsafe and not binary: |
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| 438 | add_link(req, 'alternate', attachment.href(format='txt'), |
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| 439 | 'Plain Text', mime_type) |
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| 440 | |
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| 441 | hdf = mimeview.preview_to_hdf(req, mime_type, None, data, |
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| 442 | attachment.filename, None, |
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| 443 | annotations=['lineno']) |
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| 444 | req.hdf['attachment'] = hdf |
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| 445 | finally: |
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| 446 | fd.close() |
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| 447 | |
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| 448 | def _format_link(self, formatter, ns, link, label): |
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| 449 | ids = link.split(':', 2) |
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| 450 | params = '' |
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| 451 | if len(ids) == 3: |
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| 452 | parent_type, parent_id, filename = ids |
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| 453 | else: |
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| 454 | # FIXME: the formatter should know which object the text being |
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| 455 | # formatter belongs to |
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| 456 | parent_type, parent_id = 'wiki', 'WikiStart' |
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| 457 | if formatter.req: |
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| 458 | path_info = formatter.req.path_info.split('/', 2) |
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| 459 | if len(path_info) > 1: |
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| 460 | parent_type = path_info[1] |
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| 461 | if len(path_info) > 2: |
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| 462 | parent_id = path_info[2] |
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| 463 | filename = link |
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| 464 | idx = filename.find('?') |
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| 465 | if idx >= 0: |
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| 466 | filename, params = filename[:idx], filename[idx:] |
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| 467 | try: |
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| 468 | attachment = Attachment(self.env, parent_type, parent_id, filename) |
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| 469 | return '<a class="attachment" title="添付ファイル %s" href="%s">%s</a>' \ |
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| 470 | % (util.escape(attachment.title), |
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| 471 | util.escape(attachment.href() + params), |
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| 472 | util.escape(label)) |
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| 473 | except TracError: |
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| 474 | return '<a class="missing attachment" href="%s" rel="nofollow">%s</a>' \ |
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| 475 | % (self.env.href.wiki(), label) |
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