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1 | 1 | # -*- coding: utf-8 -*- |
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2 | 2 | |
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3 | 3 | # Copyright (C) 2010-2017 RhodeCode GmbH |
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4 | 4 | # |
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5 | 5 | # This program is free software: you can redistribute it and/or modify |
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6 | 6 | # it under the terms of the GNU Affero General Public License, version 3 |
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7 | 7 | # (only), as published by the Free Software Foundation. |
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8 | 8 | # |
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9 | 9 | # This program is distributed in the hope that it will be useful, |
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10 | 10 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
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11 | 11 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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12 | 12 | # GNU General Public License for more details. |
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13 | 13 | # |
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14 | 14 | # You should have received a copy of the GNU Affero General Public License |
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15 | 15 | # along with this program. If not, see <http://www.gnu.org/licenses/>. |
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16 | 16 | # |
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17 | 17 | # This program is dual-licensed. If you wish to learn more about the |
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18 | 18 | # RhodeCode Enterprise Edition, including its added features, Support services, |
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19 | 19 | # and proprietary license terms, please see https://rhodecode.com/licenses/ |
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20 | 20 | |
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21 | 21 | import gzip |
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22 | 22 | import shutil |
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23 | 23 | import logging |
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24 | 24 | import tempfile |
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25 | 25 | import urlparse |
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26 | 26 | |
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27 | 27 | from webob.exc import HTTPNotFound |
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28 | 28 | |
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29 | 29 | import rhodecode |
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30 | 30 | from rhodecode.lib.middleware.appenlight import wrap_in_appenlight_if_enabled |
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31 | 31 | from rhodecode.lib.middleware.simplegit import SimpleGit, GIT_PROTO_PAT |
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32 | 32 | from rhodecode.lib.middleware.simplehg import SimpleHg |
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33 | 33 | from rhodecode.lib.middleware.simplesvn import SimpleSvn |
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34 | 34 | from rhodecode.model.settings import VcsSettingsModel |
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35 | 35 | |
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36 | 36 | log = logging.getLogger(__name__) |
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37 | 37 | |
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38 | 38 | VCS_TYPE_KEY = '_rc_vcs_type' |
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39 | 39 | VCS_TYPE_SKIP = '_rc_vcs_skip' |
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40 | 40 | |
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41 | 41 | |
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42 | 42 | def is_git(environ): |
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43 | 43 | """ |
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44 | 44 | Returns True if requests should be handled by GIT wsgi middleware |
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45 | 45 | """ |
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46 | 46 | is_git_path = GIT_PROTO_PAT.match(environ['PATH_INFO']) |
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47 | 47 | log.debug( |
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48 | 48 | 'request path: `%s` detected as GIT PROTOCOL %s', environ['PATH_INFO'], |
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49 | 49 | is_git_path is not None) |
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50 | 50 | |
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51 | 51 | return is_git_path |
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52 | 52 | |
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53 | 53 | |
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54 | 54 | def is_hg(environ): |
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55 | 55 | """ |
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56 | 56 | Returns True if requests target is mercurial server - header |
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57 | 57 | ``HTTP_ACCEPT`` of such request would start with ``application/mercurial``. |
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58 | 58 | """ |
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59 | 59 | is_hg_path = False |
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60 | 60 | |
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61 | 61 | http_accept = environ.get('HTTP_ACCEPT') |
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62 | 62 | |
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63 | 63 | if http_accept and http_accept.startswith('application/mercurial'): |
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64 | 64 | query = urlparse.parse_qs(environ['QUERY_STRING']) |
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65 | 65 | if 'cmd' in query: |
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66 | 66 | is_hg_path = True |
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67 | 67 | |
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68 | 68 | log.debug( |
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69 | 69 | 'request path: `%s` detected as HG PROTOCOL %s', environ['PATH_INFO'], |
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70 | 70 | is_hg_path) |
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71 | 71 | |
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72 | 72 | return is_hg_path |
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73 | 73 | |
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74 | 74 | |
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75 | 75 | def is_svn(environ): |
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76 | 76 | """ |
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77 | 77 | Returns True if requests target is Subversion server |
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78 | 78 | """ |
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79 | ||
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79 | 80 | http_dav = environ.get('HTTP_DAV', '') |
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80 | 81 | magic_path_segment = rhodecode.CONFIG.get( |
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81 | 82 | 'rhodecode_subversion_magic_path', '/!svn') |
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82 | 83 | is_svn_path = ( |
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83 | 84 | 'subversion' in http_dav or |
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84 |
magic_path_segment in environ['PATH_INFO'] |
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85 | magic_path_segment in environ['PATH_INFO'] | |
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86 | or environ['REQUEST_METHOD'] in ['PROPFIND', 'PROPPATCH'] | |
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87 | ) | |
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85 | 88 | log.debug( |
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86 | 89 | 'request path: `%s` detected as SVN PROTOCOL %s', environ['PATH_INFO'], |
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87 | 90 | is_svn_path) |
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88 | 91 | |
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89 | 92 | return is_svn_path |
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90 | 93 | |
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91 | 94 | |
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92 | 95 | class GunzipMiddleware(object): |
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93 | 96 | """ |
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94 | 97 | WSGI middleware that unzips gzip-encoded requests before |
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95 | 98 | passing on to the underlying application. |
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96 | 99 | """ |
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97 | 100 | |
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98 | 101 | def __init__(self, application): |
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99 | 102 | self.app = application |
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100 | 103 | |
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101 | 104 | def __call__(self, environ, start_response): |
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102 | 105 | accepts_encoding_header = environ.get('HTTP_CONTENT_ENCODING', b'') |
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103 | 106 | |
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104 | 107 | if b'gzip' in accepts_encoding_header: |
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105 | 108 | log.debug('gzip detected, now running gunzip wrapper') |
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106 | 109 | wsgi_input = environ['wsgi.input'] |
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107 | 110 | |
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108 | 111 | if not hasattr(environ['wsgi.input'], 'seek'): |
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109 | 112 | # The gzip implementation in the standard library of Python 2.x |
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110 | 113 | # requires the '.seek()' and '.tell()' methods to be available |
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111 | 114 | # on the input stream. Read the data into a temporary file to |
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112 | 115 | # work around this limitation. |
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113 | 116 | |
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114 | 117 | wsgi_input = tempfile.SpooledTemporaryFile(64 * 1024 * 1024) |
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115 | 118 | shutil.copyfileobj(environ['wsgi.input'], wsgi_input) |
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116 | 119 | wsgi_input.seek(0) |
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117 | 120 | |
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118 | 121 | environ['wsgi.input'] = gzip.GzipFile(fileobj=wsgi_input, mode='r') |
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119 | 122 | # since we "Ungzipped" the content we say now it's no longer gzip |
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120 | 123 | # content encoding |
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121 | 124 | del environ['HTTP_CONTENT_ENCODING'] |
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122 | 125 | |
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123 | 126 | # content length has changes ? or i'm not sure |
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124 | 127 | if 'CONTENT_LENGTH' in environ: |
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125 | 128 | del environ['CONTENT_LENGTH'] |
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126 | 129 | else: |
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127 | 130 | log.debug('content not gzipped, gzipMiddleware passing ' |
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128 | 131 | 'request further') |
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129 | 132 | return self.app(environ, start_response) |
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130 | 133 | |
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131 | 134 | |
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132 | 135 | def is_vcs_call(environ): |
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133 | 136 | if VCS_TYPE_KEY in environ: |
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134 | 137 | raw_type = environ[VCS_TYPE_KEY] |
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135 | 138 | return raw_type and raw_type != VCS_TYPE_SKIP |
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136 | 139 | return False |
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137 | 140 | |
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138 | 141 | |
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139 | 142 | def detect_vcs_request(environ, backends): |
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140 | 143 | checks = { |
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141 | 144 | 'hg': (is_hg, SimpleHg), |
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142 | 145 | 'git': (is_git, SimpleGit), |
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143 | 146 | 'svn': (is_svn, SimpleSvn), |
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144 | 147 | } |
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145 | 148 | handler = None |
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146 | 149 | |
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147 | 150 | if VCS_TYPE_KEY in environ: |
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148 | 151 | raw_type = environ[VCS_TYPE_KEY] |
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149 | 152 | if raw_type == VCS_TYPE_SKIP: |
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150 | 153 | log.debug('got `skip` marker for vcs detection, skipping...') |
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151 | 154 | return handler |
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152 | 155 | |
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153 | 156 | _check, handler = checks.get(raw_type) or [None, None] |
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154 | 157 | if handler: |
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155 | 158 | log.debug('got handler:%s from environ', handler) |
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156 | 159 | |
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157 | 160 | if not handler: |
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158 | 161 | log.debug('checking if request is of VCS type in order: %s', backends) |
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159 | 162 | for vcs_type in backends: |
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160 | 163 | vcs_check, _handler = checks[vcs_type] |
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161 | 164 | if vcs_check(environ): |
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162 | 165 | log.debug('vcs handler found %s', _handler) |
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163 | 166 | handler = _handler |
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164 | 167 | break |
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165 | 168 | |
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166 | 169 | return handler |
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167 | 170 | |
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168 | 171 | |
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169 | 172 | class VCSMiddleware(object): |
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170 | 173 | |
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171 | 174 | def __init__(self, app, registry, config, appenlight_client): |
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172 | 175 | self.application = app |
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173 | 176 | self.registry = registry |
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174 | 177 | self.config = config |
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175 | 178 | self.appenlight_client = appenlight_client |
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176 | 179 | self.use_gzip = True |
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177 | 180 | # order in which we check the middlewares, based on vcs.backends config |
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178 | 181 | self.check_middlewares = config['vcs.backends'] |
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179 | 182 | |
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180 | 183 | def vcs_config(self, repo_name=None): |
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181 | 184 | """ |
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182 | 185 | returns serialized VcsSettings |
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183 | 186 | """ |
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184 | 187 | try: |
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185 | 188 | return VcsSettingsModel( |
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186 | 189 | repo=repo_name).get_ui_settings_as_config_obj() |
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187 | 190 | except Exception: |
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188 | 191 | pass |
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189 | 192 | |
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190 | 193 | def wrap_in_gzip_if_enabled(self, app, config): |
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191 | 194 | if self.use_gzip: |
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192 | 195 | app = GunzipMiddleware(app) |
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193 | 196 | return app |
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194 | 197 | |
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195 | 198 | def _get_handler_app(self, environ): |
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196 | 199 | app = None |
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197 | 200 | log.debug('VCSMiddleware: detecting vcs type.') |
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198 | 201 | handler = detect_vcs_request(environ, self.check_middlewares) |
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199 | 202 | if handler: |
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200 | 203 | app = handler(self.config, self.registry) |
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201 | 204 | |
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202 | 205 | return app |
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203 | 206 | |
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204 | 207 | def __call__(self, environ, start_response): |
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205 | 208 | # check if we handle one of interesting protocols, optionally extract |
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206 | 209 | # specific vcsSettings and allow changes of how things are wrapped |
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207 | 210 | vcs_handler = self._get_handler_app(environ) |
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208 | 211 | if vcs_handler: |
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209 | 212 | # translate the _REPO_ID into real repo NAME for usage |
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210 | 213 | # in middleware |
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211 | 214 | environ['PATH_INFO'] = vcs_handler._get_by_id(environ['PATH_INFO']) |
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212 | 215 | |
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213 | 216 | # Set acl, url and vcs repo names. |
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214 | 217 | vcs_handler.set_repo_names(environ) |
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215 | 218 | |
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216 | 219 | # register repo config back to the handler |
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217 | 220 | vcs_conf = self.vcs_config(vcs_handler.acl_repo_name) |
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218 | 221 | # maybe damaged/non existent settings. We still want to |
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219 | 222 | # pass that point to validate on is_valid_and_existing_repo |
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220 | 223 | # and return proper HTTP Code back to client |
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221 | 224 | if vcs_conf: |
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222 | 225 | vcs_handler.repo_vcs_config = vcs_conf |
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223 | 226 | |
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224 | 227 | # check for type, presence in database and on filesystem |
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225 | 228 | if not vcs_handler.is_valid_and_existing_repo( |
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226 | 229 | vcs_handler.acl_repo_name, |
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227 | 230 | vcs_handler.base_path, |
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228 | 231 | vcs_handler.SCM): |
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229 | 232 | return HTTPNotFound()(environ, start_response) |
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230 | 233 | |
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231 | 234 | environ['REPO_NAME'] = vcs_handler.url_repo_name |
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232 | 235 | |
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233 | 236 | # Wrap handler in middlewares if they are enabled. |
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234 | 237 | vcs_handler = self.wrap_in_gzip_if_enabled( |
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235 | 238 | vcs_handler, self.config) |
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236 | 239 | vcs_handler, _ = wrap_in_appenlight_if_enabled( |
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237 | 240 | vcs_handler, self.config, self.appenlight_client) |
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238 | 241 | |
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239 | 242 | return vcs_handler(environ, start_response) |
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240 | 243 | |
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241 | 244 | return self.application(environ, start_response) |
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