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@@ -1,789 +1,816 b'' | |||
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1 | 1 | # httppeer.py - HTTP repository proxy classes for mercurial |
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2 | 2 | # |
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3 | 3 | # Copyright 2005, 2006 Matt Mackall <mpm@selenic.com> |
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4 | 4 | # Copyright 2006 Vadim Gelfer <vadim.gelfer@gmail.com> |
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5 | 5 | # |
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6 | 6 | # This software may be used and distributed according to the terms of the |
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7 | 7 | # GNU General Public License version 2 or any later version. |
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8 | 8 | |
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9 | 9 | from __future__ import absolute_import |
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10 | 10 | |
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11 | 11 | import errno |
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12 | 12 | import io |
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13 | 13 | import os |
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14 | 14 | import socket |
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15 | 15 | import struct |
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16 | 16 | import tempfile |
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17 | 17 | |
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18 | 18 | from .i18n import _ |
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19 | 19 | from .thirdparty import ( |
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20 | 20 | cbor, |
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21 | 21 | ) |
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22 | 22 | from .thirdparty.zope import ( |
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23 | 23 | interface as zi, |
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24 | 24 | ) |
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25 | 25 | from . import ( |
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26 | 26 | bundle2, |
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27 | 27 | error, |
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28 | 28 | httpconnection, |
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29 | 29 | pycompat, |
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30 | 30 | repository, |
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31 | 31 | statichttprepo, |
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32 | 32 | url as urlmod, |
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33 | 33 | util, |
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34 | 34 | wireproto, |
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35 | 35 | wireprotoframing, |
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36 | 36 | wireprototypes, |
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37 | 37 | wireprotov2server, |
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38 | 38 | ) |
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39 | 39 | |
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40 | 40 | httplib = util.httplib |
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41 | 41 | urlerr = util.urlerr |
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42 | 42 | urlreq = util.urlreq |
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43 | 43 | |
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44 | 44 | def encodevalueinheaders(value, header, limit): |
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45 | 45 | """Encode a string value into multiple HTTP headers. |
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46 | 46 | |
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47 | 47 | ``value`` will be encoded into 1 or more HTTP headers with the names |
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48 | 48 | ``header-<N>`` where ``<N>`` is an integer starting at 1. Each header |
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49 | 49 | name + value will be at most ``limit`` bytes long. |
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50 | 50 | |
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51 | 51 | Returns an iterable of 2-tuples consisting of header names and |
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52 | 52 | values as native strings. |
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53 | 53 | """ |
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54 | 54 | # HTTP Headers are ASCII. Python 3 requires them to be unicodes, |
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55 | 55 | # not bytes. This function always takes bytes in as arguments. |
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56 | 56 | fmt = pycompat.strurl(header) + r'-%s' |
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57 | 57 | # Note: it is *NOT* a bug that the last bit here is a bytestring |
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58 | 58 | # and not a unicode: we're just getting the encoded length anyway, |
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59 | 59 | # and using an r-string to make it portable between Python 2 and 3 |
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60 | 60 | # doesn't work because then the \r is a literal backslash-r |
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61 | 61 | # instead of a carriage return. |
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62 | 62 | valuelen = limit - len(fmt % r'000') - len(': \r\n') |
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63 | 63 | result = [] |
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64 | 64 | |
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65 | 65 | n = 0 |
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66 | 66 | for i in xrange(0, len(value), valuelen): |
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67 | 67 | n += 1 |
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68 | 68 | result.append((fmt % str(n), pycompat.strurl(value[i:i + valuelen]))) |
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69 | 69 | |
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70 | 70 | return result |
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71 | 71 | |
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72 | 72 | def _wraphttpresponse(resp): |
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73 | 73 | """Wrap an HTTPResponse with common error handlers. |
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74 | 74 | |
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75 | 75 | This ensures that any I/O from any consumer raises the appropriate |
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76 | 76 | error and messaging. |
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77 | 77 | """ |
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78 | 78 | origread = resp.read |
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79 | 79 | |
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80 | 80 | class readerproxy(resp.__class__): |
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81 | 81 | def read(self, size=None): |
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82 | 82 | try: |
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83 | 83 | return origread(size) |
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84 | 84 | except httplib.IncompleteRead as e: |
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85 | 85 | # e.expected is an integer if length known or None otherwise. |
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86 | 86 | if e.expected: |
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87 | 87 | msg = _('HTTP request error (incomplete response; ' |
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88 | 88 | 'expected %d bytes got %d)') % (e.expected, |
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89 | 89 | len(e.partial)) |
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90 | 90 | else: |
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91 | 91 | msg = _('HTTP request error (incomplete response)') |
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92 | 92 | |
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93 | 93 | raise error.PeerTransportError( |
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94 | 94 | msg, |
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95 | 95 | hint=_('this may be an intermittent network failure; ' |
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96 | 96 | 'if the error persists, consider contacting the ' |
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97 | 97 | 'network or server operator')) |
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98 | 98 | except httplib.HTTPException as e: |
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99 | 99 | raise error.PeerTransportError( |
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100 | 100 | _('HTTP request error (%s)') % e, |
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101 | 101 | hint=_('this may be an intermittent network failure; ' |
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102 | 102 | 'if the error persists, consider contacting the ' |
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103 | 103 | 'network or server operator')) |
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104 | 104 | |
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105 | 105 | resp.__class__ = readerproxy |
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106 | 106 | |
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107 | 107 | class _multifile(object): |
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108 | 108 | def __init__(self, *fileobjs): |
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109 | 109 | for f in fileobjs: |
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110 | 110 | if not util.safehasattr(f, 'length'): |
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111 | 111 | raise ValueError( |
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112 | 112 | '_multifile only supports file objects that ' |
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113 | 113 | 'have a length but this one does not:', type(f), f) |
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114 | 114 | self._fileobjs = fileobjs |
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115 | 115 | self._index = 0 |
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116 | 116 | |
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117 | 117 | @property |
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118 | 118 | def length(self): |
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119 | 119 | return sum(f.length for f in self._fileobjs) |
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120 | 120 | |
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121 | 121 | def read(self, amt=None): |
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122 | 122 | if amt <= 0: |
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123 | 123 | return ''.join(f.read() for f in self._fileobjs) |
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124 | 124 | parts = [] |
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125 | 125 | while amt and self._index < len(self._fileobjs): |
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126 | 126 | parts.append(self._fileobjs[self._index].read(amt)) |
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127 | 127 | got = len(parts[-1]) |
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128 | 128 | if got < amt: |
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129 | 129 | self._index += 1 |
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130 | 130 | amt -= got |
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131 | 131 | return ''.join(parts) |
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132 | 132 | |
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133 | 133 | def seek(self, offset, whence=os.SEEK_SET): |
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134 | 134 | if whence != os.SEEK_SET: |
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135 | 135 | raise NotImplementedError( |
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136 | 136 | '_multifile does not support anything other' |
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137 | 137 | ' than os.SEEK_SET for whence on seek()') |
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138 | 138 | if offset != 0: |
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139 | 139 | raise NotImplementedError( |
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140 | 140 | '_multifile only supports seeking to start, but that ' |
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141 | 141 | 'could be fixed if you need it') |
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142 | 142 | for f in self._fileobjs: |
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143 | 143 | f.seek(0) |
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144 | 144 | self._index = 0 |
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145 | 145 | |
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146 | 146 | def makev1commandrequest(ui, requestbuilder, caps, capablefn, |
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147 | 147 | repobaseurl, cmd, args): |
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148 | 148 | """Make an HTTP request to run a command for a version 1 client. |
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149 | 149 | |
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150 | 150 | ``caps`` is a set of known server capabilities. The value may be |
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151 | 151 | None if capabilities are not yet known. |
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152 | 152 | |
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153 | 153 | ``capablefn`` is a function to evaluate a capability. |
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154 | 154 | |
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155 | 155 | ``cmd``, ``args``, and ``data`` define the command, its arguments, and |
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156 | 156 | raw data to pass to it. |
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157 | 157 | """ |
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158 | 158 | if cmd == 'pushkey': |
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159 | 159 | args['data'] = '' |
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160 | 160 | data = args.pop('data', None) |
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161 | 161 | headers = args.pop('headers', {}) |
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162 | 162 | |
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163 | 163 | ui.debug("sending %s command\n" % cmd) |
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164 | 164 | q = [('cmd', cmd)] |
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165 | 165 | headersize = 0 |
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166 | 166 | # Important: don't use self.capable() here or else you end up |
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167 | 167 | # with infinite recursion when trying to look up capabilities |
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168 | 168 | # for the first time. |
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169 | 169 | postargsok = caps is not None and 'httppostargs' in caps |
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170 | 170 | |
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171 | 171 | # Send arguments via POST. |
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172 | 172 | if postargsok and args: |
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173 | 173 | strargs = urlreq.urlencode(sorted(args.items())) |
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174 | 174 | if not data: |
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175 | 175 | data = strargs |
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176 | 176 | else: |
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177 | 177 | if isinstance(data, bytes): |
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178 | 178 | i = io.BytesIO(data) |
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179 | 179 | i.length = len(data) |
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180 | 180 | data = i |
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181 | 181 | argsio = io.BytesIO(strargs) |
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182 | 182 | argsio.length = len(strargs) |
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183 | 183 | data = _multifile(argsio, data) |
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184 | 184 | headers[r'X-HgArgs-Post'] = len(strargs) |
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185 | 185 | elif args: |
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186 | 186 | # Calling self.capable() can infinite loop if we are calling |
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187 | 187 | # "capabilities". But that command should never accept wire |
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188 | 188 | # protocol arguments. So this should never happen. |
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189 | 189 | assert cmd != 'capabilities' |
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190 | 190 | httpheader = capablefn('httpheader') |
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191 | 191 | if httpheader: |
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192 | 192 | headersize = int(httpheader.split(',', 1)[0]) |
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193 | 193 | |
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194 | 194 | # Send arguments via HTTP headers. |
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195 | 195 | if headersize > 0: |
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196 | 196 | # The headers can typically carry more data than the URL. |
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197 | 197 | encargs = urlreq.urlencode(sorted(args.items())) |
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198 | 198 | for header, value in encodevalueinheaders(encargs, 'X-HgArg', |
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199 | 199 | headersize): |
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200 | 200 | headers[header] = value |
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201 | 201 | # Send arguments via query string (Mercurial <1.9). |
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202 | 202 | else: |
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203 | 203 | q += sorted(args.items()) |
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204 | 204 | |
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205 | 205 | qs = '?%s' % urlreq.urlencode(q) |
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206 | 206 | cu = "%s%s" % (repobaseurl, qs) |
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207 | 207 | size = 0 |
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208 | 208 | if util.safehasattr(data, 'length'): |
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209 | 209 | size = data.length |
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210 | 210 | elif data is not None: |
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211 | 211 | size = len(data) |
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212 | 212 | if data is not None and r'Content-Type' not in headers: |
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213 | 213 | headers[r'Content-Type'] = r'application/mercurial-0.1' |
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214 | 214 | |
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215 | 215 | # Tell the server we accept application/mercurial-0.2 and multiple |
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216 | 216 | # compression formats if the server is capable of emitting those |
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217 | 217 | # payloads. |
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218 | 218 | # Note: Keep this set empty by default, as client advertisement of |
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219 | 219 | # protocol parameters should only occur after the handshake. |
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220 | 220 | protoparams = set() |
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221 | 221 | |
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222 | 222 | mediatypes = set() |
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223 | 223 | if caps is not None: |
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224 | 224 | mt = capablefn('httpmediatype') |
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225 | 225 | if mt: |
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226 | 226 | protoparams.add('0.1') |
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227 | 227 | mediatypes = set(mt.split(',')) |
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228 | 228 | |
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229 | 229 | protoparams.add('partial-pull') |
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230 | 230 | |
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231 | 231 | if '0.2tx' in mediatypes: |
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232 | 232 | protoparams.add('0.2') |
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233 | 233 | |
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234 | 234 | if '0.2tx' in mediatypes and capablefn('compression'): |
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235 | 235 | # We /could/ compare supported compression formats and prune |
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236 | 236 | # non-mutually supported or error if nothing is mutually supported. |
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237 | 237 | # For now, send the full list to the server and have it error. |
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238 | 238 | comps = [e.wireprotosupport().name for e in |
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239 | 239 | util.compengines.supportedwireengines(util.CLIENTROLE)] |
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240 | 240 | protoparams.add('comp=%s' % ','.join(comps)) |
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241 | 241 | |
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242 | 242 | if protoparams: |
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243 | 243 | protoheaders = encodevalueinheaders(' '.join(sorted(protoparams)), |
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244 | 244 | 'X-HgProto', |
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245 | 245 | headersize or 1024) |
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246 | 246 | for header, value in protoheaders: |
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247 | 247 | headers[header] = value |
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248 | 248 | |
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249 | 249 | varyheaders = [] |
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250 | 250 | for header in headers: |
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251 | 251 | if header.lower().startswith(r'x-hg'): |
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252 | 252 | varyheaders.append(header) |
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253 | 253 | |
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254 | 254 | if varyheaders: |
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255 | 255 | headers[r'Vary'] = r','.join(sorted(varyheaders)) |
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256 | 256 | |
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257 | 257 | req = requestbuilder(pycompat.strurl(cu), data, headers) |
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258 | 258 | |
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259 | 259 | if data is not None: |
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260 | 260 | ui.debug("sending %d bytes\n" % size) |
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261 | 261 | req.add_unredirected_header(r'Content-Length', r'%d' % size) |
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262 | 262 | |
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263 | 263 | return req, cu, qs |
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264 | 264 | |
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265 | 265 | def sendrequest(ui, opener, req): |
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266 | 266 | """Send a prepared HTTP request. |
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267 | 267 | |
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268 | 268 | Returns the response object. |
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269 | 269 | """ |
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270 | 270 | if (ui.debugflag |
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271 | 271 | and ui.configbool('devel', 'debug.peer-request')): |
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272 | 272 | dbg = ui.debug |
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273 | 273 | line = 'devel-peer-request: %s\n' |
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274 | 274 | dbg(line % '%s %s' % (req.get_method(), req.get_full_url())) |
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275 | 275 | hgargssize = None |
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276 | 276 | |
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277 | 277 | for header, value in sorted(req.header_items()): |
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278 | 278 | if header.startswith('X-hgarg-'): |
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279 | 279 | if hgargssize is None: |
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280 | 280 | hgargssize = 0 |
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281 | 281 | hgargssize += len(value) |
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282 | 282 | else: |
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283 | 283 | dbg(line % ' %s %s' % (header, value)) |
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284 | 284 | |
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285 | 285 | if hgargssize is not None: |
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286 | 286 | dbg(line % ' %d bytes of commands arguments in headers' |
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287 | 287 | % hgargssize) |
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288 | 288 | |
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289 | 289 | if req.has_data(): |
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290 | 290 | data = req.get_data() |
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291 | 291 | length = getattr(data, 'length', None) |
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292 | 292 | if length is None: |
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293 | 293 | length = len(data) |
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294 | 294 | dbg(line % ' %d bytes of data' % length) |
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295 | 295 | |
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296 | 296 | start = util.timer() |
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297 | 297 | |
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298 | 298 | try: |
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299 | 299 | res = opener.open(req) |
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300 | 300 | except urlerr.httperror as inst: |
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301 | 301 | if inst.code == 401: |
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302 | 302 | raise error.Abort(_('authorization failed')) |
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303 | 303 | raise |
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304 | 304 | except httplib.HTTPException as inst: |
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305 | 305 | ui.debug('http error requesting %s\n' % |
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306 | 306 | util.hidepassword(req.get_full_url())) |
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307 | 307 | ui.traceback() |
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308 | 308 | raise IOError(None, inst) |
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309 | 309 | finally: |
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310 | 310 | if ui.configbool('devel', 'debug.peer-request'): |
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311 | 311 | dbg(line % ' finished in %.4f seconds (%s)' |
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312 | 312 | % (util.timer() - start, res.code)) |
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313 | 313 | |
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314 | 314 | # Insert error handlers for common I/O failures. |
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315 | 315 | _wraphttpresponse(res) |
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316 | 316 | |
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317 | 317 | return res |
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318 | 318 | |
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319 | 319 | def parsev1commandresponse(ui, baseurl, requrl, qs, resp, compressible, |
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320 | 320 | allowcbor=False): |
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321 | 321 | # record the url we got redirected to |
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322 | 322 | respurl = pycompat.bytesurl(resp.geturl()) |
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323 | 323 | if respurl.endswith(qs): |
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324 | 324 | respurl = respurl[:-len(qs)] |
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325 | 325 | if baseurl.rstrip('/') != respurl.rstrip('/'): |
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326 | 326 | if not ui.quiet: |
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327 | 327 | ui.warn(_('real URL is %s\n') % respurl) |
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328 | 328 | |
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329 | 329 | try: |
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330 | 330 | proto = pycompat.bytesurl(resp.getheader(r'content-type', r'')) |
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331 | 331 | except AttributeError: |
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332 | 332 | proto = pycompat.bytesurl(resp.headers.get(r'content-type', r'')) |
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333 | 333 | |
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334 | 334 | safeurl = util.hidepassword(baseurl) |
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335 | 335 | if proto.startswith('application/hg-error'): |
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336 | 336 | raise error.OutOfBandError(resp.read()) |
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337 | 337 | |
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338 | 338 | # Pre 1.0 versions of Mercurial used text/plain and |
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339 | 339 | # application/hg-changegroup. We don't support such old servers. |
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340 | 340 | if not proto.startswith('application/mercurial-'): |
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341 | 341 | ui.debug("requested URL: '%s'\n" % util.hidepassword(requrl)) |
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342 | 342 | raise error.RepoError( |
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343 | 343 | _("'%s' does not appear to be an hg repository:\n" |
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344 | 344 | "---%%<--- (%s)\n%s\n---%%<---\n") |
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345 | 345 | % (safeurl, proto or 'no content-type', resp.read(1024))) |
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346 | 346 | |
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347 | 347 | try: |
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348 | 348 | subtype = proto.split('-', 1)[1] |
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349 | 349 | |
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350 | 350 | # Unless we end up supporting CBOR in the legacy wire protocol, |
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351 | 351 | # this should ONLY be encountered for the initial capabilities |
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352 | 352 | # request during handshake. |
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353 | 353 | if subtype == 'cbor': |
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354 | 354 | if allowcbor: |
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355 | 355 | return respurl, proto, resp |
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356 | 356 | else: |
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357 | 357 | raise error.RepoError(_('unexpected CBOR response from ' |
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358 | 358 | 'server')) |
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359 | 359 | |
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360 | 360 | version_info = tuple([int(n) for n in subtype.split('.')]) |
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361 | 361 | except ValueError: |
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362 | 362 | raise error.RepoError(_("'%s' sent a broken Content-Type " |
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363 | 363 | "header (%s)") % (safeurl, proto)) |
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364 | 364 | |
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365 | 365 | # TODO consider switching to a decompression reader that uses |
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366 | 366 | # generators. |
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367 | 367 | if version_info == (0, 1): |
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368 | 368 | if compressible: |
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369 | 369 | resp = util.compengines['zlib'].decompressorreader(resp) |
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370 | 370 | |
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371 | 371 | elif version_info == (0, 2): |
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372 | 372 | # application/mercurial-0.2 always identifies the compression |
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373 | 373 | # engine in the payload header. |
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374 | 374 | elen = struct.unpack('B', resp.read(1))[0] |
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375 | 375 | ename = resp.read(elen) |
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376 | 376 | engine = util.compengines.forwiretype(ename) |
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377 | 377 | |
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378 | 378 | resp = engine.decompressorreader(resp) |
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379 | 379 | else: |
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380 | 380 | raise error.RepoError(_("'%s' uses newer protocol %s") % |
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381 | 381 | (safeurl, subtype)) |
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382 | 382 | |
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383 | 383 | return respurl, proto, resp |
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384 | 384 | |
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385 | 385 | class httppeer(wireproto.wirepeer): |
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386 | 386 | def __init__(self, ui, path, url, opener, requestbuilder, caps): |
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387 | 387 | self.ui = ui |
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388 | 388 | self._path = path |
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389 | 389 | self._url = url |
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390 | 390 | self._caps = caps |
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391 | 391 | self._urlopener = opener |
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392 | 392 | self._requestbuilder = requestbuilder |
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393 | 393 | |
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394 | 394 | def __del__(self): |
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395 | 395 | for h in self._urlopener.handlers: |
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396 | 396 | h.close() |
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397 | 397 | getattr(h, "close_all", lambda: None)() |
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398 | 398 | |
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399 | 399 | # Begin of ipeerconnection interface. |
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400 | 400 | |
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401 | 401 | def url(self): |
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402 | 402 | return self._path |
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403 | 403 | |
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404 | 404 | def local(self): |
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405 | 405 | return None |
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406 | 406 | |
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407 | 407 | def peer(self): |
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408 | 408 | return self |
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409 | 409 | |
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410 | 410 | def canpush(self): |
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411 | 411 | return True |
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412 | 412 | |
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413 | 413 | def close(self): |
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414 | 414 | pass |
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415 | 415 | |
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416 | 416 | # End of ipeerconnection interface. |
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417 | 417 | |
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418 | 418 | # Begin of ipeercommands interface. |
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419 | 419 | |
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420 | 420 | def capabilities(self): |
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421 | 421 | return self._caps |
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422 | 422 | |
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423 | 423 | # End of ipeercommands interface. |
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424 | 424 | |
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425 | 425 | # look up capabilities only when needed |
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426 | 426 | |
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427 | 427 | def _callstream(self, cmd, _compressible=False, **args): |
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428 | 428 | args = pycompat.byteskwargs(args) |
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429 | 429 | |
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430 | 430 | req, cu, qs = makev1commandrequest(self.ui, self._requestbuilder, |
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431 | 431 | self._caps, self.capable, |
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432 | 432 | self._url, cmd, args) |
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433 | 433 | |
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434 | 434 | resp = sendrequest(self.ui, self._urlopener, req) |
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435 | 435 | |
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436 | 436 | self._url, ct, resp = parsev1commandresponse(self.ui, self._url, cu, qs, |
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437 | 437 | resp, _compressible) |
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438 | 438 | |
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439 | 439 | return resp |
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440 | 440 | |
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441 | 441 | def _call(self, cmd, **args): |
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442 | 442 | fp = self._callstream(cmd, **args) |
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443 | 443 | try: |
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444 | 444 | return fp.read() |
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445 | 445 | finally: |
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446 | 446 | # if using keepalive, allow connection to be reused |
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447 | 447 | fp.close() |
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448 | 448 | |
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449 | 449 | def _callpush(self, cmd, cg, **args): |
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450 | 450 | # have to stream bundle to a temp file because we do not have |
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451 | 451 | # http 1.1 chunked transfer. |
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452 | 452 | |
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453 | 453 | types = self.capable('unbundle') |
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454 | 454 | try: |
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455 | 455 | types = types.split(',') |
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456 | 456 | except AttributeError: |
|
457 | 457 | # servers older than d1b16a746db6 will send 'unbundle' as a |
|
458 | 458 | # boolean capability. They only support headerless/uncompressed |
|
459 | 459 | # bundles. |
|
460 | 460 | types = [""] |
|
461 | 461 | for x in types: |
|
462 | 462 | if x in bundle2.bundletypes: |
|
463 | 463 | type = x |
|
464 | 464 | break |
|
465 | 465 | |
|
466 | 466 | tempname = bundle2.writebundle(self.ui, cg, None, type) |
|
467 | 467 | fp = httpconnection.httpsendfile(self.ui, tempname, "rb") |
|
468 | 468 | headers = {r'Content-Type': r'application/mercurial-0.1'} |
|
469 | 469 | |
|
470 | 470 | try: |
|
471 | 471 | r = self._call(cmd, data=fp, headers=headers, **args) |
|
472 | 472 | vals = r.split('\n', 1) |
|
473 | 473 | if len(vals) < 2: |
|
474 | 474 | raise error.ResponseError(_("unexpected response:"), r) |
|
475 | 475 | return vals |
|
476 | 476 | except urlerr.httperror: |
|
477 | 477 | # Catch and re-raise these so we don't try and treat them |
|
478 | 478 | # like generic socket errors. They lack any values in |
|
479 | 479 | # .args on Python 3 which breaks our socket.error block. |
|
480 | 480 | raise |
|
481 | 481 | except socket.error as err: |
|
482 | 482 | if err.args[0] in (errno.ECONNRESET, errno.EPIPE): |
|
483 | 483 | raise error.Abort(_('push failed: %s') % err.args[1]) |
|
484 | 484 | raise error.Abort(err.args[1]) |
|
485 | 485 | finally: |
|
486 | 486 | fp.close() |
|
487 | 487 | os.unlink(tempname) |
|
488 | 488 | |
|
489 | 489 | def _calltwowaystream(self, cmd, fp, **args): |
|
490 | 490 | fh = None |
|
491 | 491 | fp_ = None |
|
492 | 492 | filename = None |
|
493 | 493 | try: |
|
494 | 494 | # dump bundle to disk |
|
495 | 495 | fd, filename = tempfile.mkstemp(prefix="hg-bundle-", suffix=".hg") |
|
496 | 496 | fh = os.fdopen(fd, r"wb") |
|
497 | 497 | d = fp.read(4096) |
|
498 | 498 | while d: |
|
499 | 499 | fh.write(d) |
|
500 | 500 | d = fp.read(4096) |
|
501 | 501 | fh.close() |
|
502 | 502 | # start http push |
|
503 | 503 | fp_ = httpconnection.httpsendfile(self.ui, filename, "rb") |
|
504 | 504 | headers = {r'Content-Type': r'application/mercurial-0.1'} |
|
505 | 505 | return self._callstream(cmd, data=fp_, headers=headers, **args) |
|
506 | 506 | finally: |
|
507 | 507 | if fp_ is not None: |
|
508 | 508 | fp_.close() |
|
509 | 509 | if fh is not None: |
|
510 | 510 | fh.close() |
|
511 | 511 | os.unlink(filename) |
|
512 | 512 | |
|
513 | 513 | def _callcompressable(self, cmd, **args): |
|
514 | 514 | return self._callstream(cmd, _compressible=True, **args) |
|
515 | 515 | |
|
516 | 516 | def _abort(self, exception): |
|
517 | 517 | raise exception |
|
518 | 518 | |
|
519 | 519 | # TODO implement interface for version 2 peers |
|
520 | @zi.implementer(repository.ipeerconnection) | |
|
520 | @zi.implementer(repository.ipeerconnection, repository.ipeercapabilities) | |
|
521 | 521 | class httpv2peer(object): |
|
522 | 522 | def __init__(self, ui, repourl, apipath, opener, requestbuilder, |
|
523 | 523 | apidescriptor): |
|
524 | 524 | self.ui = ui |
|
525 | 525 | |
|
526 | 526 | if repourl.endswith('/'): |
|
527 | 527 | repourl = repourl[:-1] |
|
528 | 528 | |
|
529 | 529 | self._url = repourl |
|
530 | 530 | self._apipath = apipath |
|
531 | 531 | self._opener = opener |
|
532 | 532 | self._requestbuilder = requestbuilder |
|
533 | 533 | self._descriptor = apidescriptor |
|
534 | 534 | |
|
535 | 535 | # Start of ipeerconnection. |
|
536 | 536 | |
|
537 | 537 | def url(self): |
|
538 | 538 | return self._url |
|
539 | 539 | |
|
540 | 540 | def local(self): |
|
541 | 541 | return None |
|
542 | 542 | |
|
543 | 543 | def peer(self): |
|
544 | 544 | return self |
|
545 | 545 | |
|
546 | 546 | def canpush(self): |
|
547 | 547 | # TODO change once implemented. |
|
548 | 548 | return False |
|
549 | 549 | |
|
550 | 550 | def close(self): |
|
551 | 551 | pass |
|
552 | 552 | |
|
553 | 553 | # End of ipeerconnection. |
|
554 | 554 | |
|
555 | # Start of ipeercapabilities. | |
|
556 | ||
|
557 | def capable(self, name): | |
|
558 | # The capabilities used internally historically map to capabilities | |
|
559 | # advertised from the "capabilities" wire protocol command. However, | |
|
560 | # version 2 of that command works differently. | |
|
561 | ||
|
562 | # Maps to commands that are available. | |
|
563 | if name in ('branchmap', 'getbundle', 'known', 'lookup', 'pushkey'): | |
|
564 | return True | |
|
565 | ||
|
566 | # Other concepts. | |
|
567 | if name in ('bundle2',): | |
|
568 | return True | |
|
569 | ||
|
570 | return False | |
|
571 | ||
|
572 | def requirecap(self, name, purpose): | |
|
573 | if self.capable(name): | |
|
574 | return | |
|
575 | ||
|
576 | raise error.CapabilityError( | |
|
577 | _('cannot %s; client or remote repository does not support the %r ' | |
|
578 | 'capability') % (purpose, name)) | |
|
579 | ||
|
580 | # End of ipeercapabilities. | |
|
581 | ||
|
555 | 582 | # TODO require to be part of a batched primitive, use futures. |
|
556 | 583 | def _call(self, name, **args): |
|
557 | 584 | """Call a wire protocol command with arguments.""" |
|
558 | 585 | |
|
559 | 586 | # Having this early has a side-effect of importing wireprotov2server, |
|
560 | 587 | # which has the side-effect of ensuring commands are registered. |
|
561 | 588 | |
|
562 | 589 | # TODO modify user-agent to reflect v2. |
|
563 | 590 | headers = { |
|
564 | 591 | r'Accept': wireprotov2server.FRAMINGTYPE, |
|
565 | 592 | r'Content-Type': wireprotov2server.FRAMINGTYPE, |
|
566 | 593 | } |
|
567 | 594 | |
|
568 | 595 | # TODO permissions should come from capabilities results. |
|
569 | 596 | permission = wireproto.commandsv2[name].permission |
|
570 | 597 | if permission not in ('push', 'pull'): |
|
571 | 598 | raise error.ProgrammingError('unknown permission type: %s' % |
|
572 | 599 | permission) |
|
573 | 600 | |
|
574 | 601 | permission = { |
|
575 | 602 | 'push': 'rw', |
|
576 | 603 | 'pull': 'ro', |
|
577 | 604 | }[permission] |
|
578 | 605 | |
|
579 | 606 | url = '%s/%s/%s/%s' % (self._url, self._apipath, permission, name) |
|
580 | 607 | |
|
581 | 608 | # TODO this should be part of a generic peer for the frame-based |
|
582 | 609 | # protocol. |
|
583 | 610 | reactor = wireprotoframing.clientreactor(hasmultiplesend=False, |
|
584 | 611 | buffersends=True) |
|
585 | 612 | |
|
586 | 613 | request, action, meta = reactor.callcommand(name, args) |
|
587 | 614 | assert action == 'noop' |
|
588 | 615 | |
|
589 | 616 | action, meta = reactor.flushcommands() |
|
590 | 617 | assert action == 'sendframes' |
|
591 | 618 | |
|
592 | 619 | body = b''.join(map(bytes, meta['framegen'])) |
|
593 | 620 | req = self._requestbuilder(pycompat.strurl(url), body, headers) |
|
594 | 621 | req.add_unredirected_header(r'Content-Length', r'%d' % len(body)) |
|
595 | 622 | |
|
596 | 623 | # TODO unify this code with httppeer. |
|
597 | 624 | try: |
|
598 | 625 | res = self._opener.open(req) |
|
599 | 626 | except urlerr.httperror as e: |
|
600 | 627 | if e.code == 401: |
|
601 | 628 | raise error.Abort(_('authorization failed')) |
|
602 | 629 | |
|
603 | 630 | raise |
|
604 | 631 | except httplib.HTTPException as e: |
|
605 | 632 | self.ui.traceback() |
|
606 | 633 | raise IOError(None, e) |
|
607 | 634 | |
|
608 | 635 | # TODO validate response type, wrap response to handle I/O errors. |
|
609 | 636 | # TODO more robust frame receiver. |
|
610 | 637 | results = [] |
|
611 | 638 | |
|
612 | 639 | while True: |
|
613 | 640 | frame = wireprotoframing.readframe(res) |
|
614 | 641 | if frame is None: |
|
615 | 642 | break |
|
616 | 643 | |
|
617 | 644 | self.ui.note(_('received %r\n') % frame) |
|
618 | 645 | |
|
619 | 646 | action, meta = reactor.onframerecv(frame) |
|
620 | 647 | |
|
621 | 648 | if action == 'responsedata': |
|
622 | 649 | if meta['cbor']: |
|
623 | 650 | payload = util.bytesio(meta['data']) |
|
624 | 651 | |
|
625 | 652 | decoder = cbor.CBORDecoder(payload) |
|
626 | 653 | while payload.tell() + 1 < len(meta['data']): |
|
627 | 654 | results.append(decoder.decode()) |
|
628 | 655 | else: |
|
629 | 656 | results.append(meta['data']) |
|
630 | 657 | else: |
|
631 | 658 | error.ProgrammingError('unhandled action: %s' % action) |
|
632 | 659 | |
|
633 | 660 | return results |
|
634 | 661 | |
|
635 | 662 | # Registry of API service names to metadata about peers that handle it. |
|
636 | 663 | # |
|
637 | 664 | # The following keys are meaningful: |
|
638 | 665 | # |
|
639 | 666 | # init |
|
640 | 667 | # Callable receiving (ui, repourl, servicepath, opener, requestbuilder, |
|
641 | 668 | # apidescriptor) to create a peer. |
|
642 | 669 | # |
|
643 | 670 | # priority |
|
644 | 671 | # Integer priority for the service. If we could choose from multiple |
|
645 | 672 | # services, we choose the one with the highest priority. |
|
646 | 673 | API_PEERS = { |
|
647 | 674 | wireprototypes.HTTPV2: { |
|
648 | 675 | 'init': httpv2peer, |
|
649 | 676 | 'priority': 50, |
|
650 | 677 | }, |
|
651 | 678 | } |
|
652 | 679 | |
|
653 | 680 | def performhandshake(ui, url, opener, requestbuilder): |
|
654 | 681 | # The handshake is a request to the capabilities command. |
|
655 | 682 | |
|
656 | 683 | caps = None |
|
657 | 684 | def capable(x): |
|
658 | 685 | raise error.ProgrammingError('should not be called') |
|
659 | 686 | |
|
660 | 687 | args = {} |
|
661 | 688 | |
|
662 | 689 | # The client advertises support for newer protocols by adding an |
|
663 | 690 | # X-HgUpgrade-* header with a list of supported APIs and an |
|
664 | 691 | # X-HgProto-* header advertising which serializing formats it supports. |
|
665 | 692 | # We only support the HTTP version 2 transport and CBOR responses for |
|
666 | 693 | # now. |
|
667 | 694 | advertisev2 = ui.configbool('experimental', 'httppeer.advertise-v2') |
|
668 | 695 | |
|
669 | 696 | if advertisev2: |
|
670 | 697 | args['headers'] = { |
|
671 | 698 | r'X-HgProto-1': r'cbor', |
|
672 | 699 | } |
|
673 | 700 | |
|
674 | 701 | args['headers'].update( |
|
675 | 702 | encodevalueinheaders(' '.join(sorted(API_PEERS)), |
|
676 | 703 | 'X-HgUpgrade', |
|
677 | 704 | # We don't know the header limit this early. |
|
678 | 705 | # So make it small. |
|
679 | 706 | 1024)) |
|
680 | 707 | |
|
681 | 708 | req, requrl, qs = makev1commandrequest(ui, requestbuilder, caps, |
|
682 | 709 | capable, url, 'capabilities', |
|
683 | 710 | args) |
|
684 | 711 | |
|
685 | 712 | resp = sendrequest(ui, opener, req) |
|
686 | 713 | |
|
687 | 714 | respurl, ct, resp = parsev1commandresponse(ui, url, requrl, qs, resp, |
|
688 | 715 | compressible=False, |
|
689 | 716 | allowcbor=advertisev2) |
|
690 | 717 | |
|
691 | 718 | try: |
|
692 | 719 | rawdata = resp.read() |
|
693 | 720 | finally: |
|
694 | 721 | resp.close() |
|
695 | 722 | |
|
696 | 723 | if not ct.startswith('application/mercurial-'): |
|
697 | 724 | raise error.ProgrammingError('unexpected content-type: %s' % ct) |
|
698 | 725 | |
|
699 | 726 | if advertisev2: |
|
700 | 727 | if ct == 'application/mercurial-cbor': |
|
701 | 728 | try: |
|
702 | 729 | info = cbor.loads(rawdata) |
|
703 | 730 | except cbor.CBORDecodeError: |
|
704 | 731 | raise error.Abort(_('error decoding CBOR from remote server'), |
|
705 | 732 | hint=_('try again and consider contacting ' |
|
706 | 733 | 'the server operator')) |
|
707 | 734 | |
|
708 | 735 | # We got a legacy response. That's fine. |
|
709 | 736 | elif ct in ('application/mercurial-0.1', 'application/mercurial-0.2'): |
|
710 | 737 | info = { |
|
711 | 738 | 'v1capabilities': set(rawdata.split()) |
|
712 | 739 | } |
|
713 | 740 | |
|
714 | 741 | else: |
|
715 | 742 | raise error.RepoError( |
|
716 | 743 | _('unexpected response type from server: %s') % ct) |
|
717 | 744 | else: |
|
718 | 745 | info = { |
|
719 | 746 | 'v1capabilities': set(rawdata.split()) |
|
720 | 747 | } |
|
721 | 748 | |
|
722 | 749 | return respurl, info |
|
723 | 750 | |
|
724 | 751 | def makepeer(ui, path, opener=None, requestbuilder=urlreq.request): |
|
725 | 752 | """Construct an appropriate HTTP peer instance. |
|
726 | 753 | |
|
727 | 754 | ``opener`` is an ``url.opener`` that should be used to establish |
|
728 | 755 | connections, perform HTTP requests. |
|
729 | 756 | |
|
730 | 757 | ``requestbuilder`` is the type used for constructing HTTP requests. |
|
731 | 758 | It exists as an argument so extensions can override the default. |
|
732 | 759 | """ |
|
733 | 760 | u = util.url(path) |
|
734 | 761 | if u.query or u.fragment: |
|
735 | 762 | raise error.Abort(_('unsupported URL component: "%s"') % |
|
736 | 763 | (u.query or u.fragment)) |
|
737 | 764 | |
|
738 | 765 | # urllib cannot handle URLs with embedded user or passwd. |
|
739 | 766 | url, authinfo = u.authinfo() |
|
740 | 767 | ui.debug('using %s\n' % url) |
|
741 | 768 | |
|
742 | 769 | opener = opener or urlmod.opener(ui, authinfo) |
|
743 | 770 | |
|
744 | 771 | respurl, info = performhandshake(ui, url, opener, requestbuilder) |
|
745 | 772 | |
|
746 | 773 | # Given the intersection of APIs that both we and the server support, |
|
747 | 774 | # sort by their advertised priority and pick the first one. |
|
748 | 775 | # |
|
749 | 776 | # TODO consider making this request-based and interface driven. For |
|
750 | 777 | # example, the caller could say "I want a peer that does X." It's quite |
|
751 | 778 | # possible that not all peers would do that. Since we know the service |
|
752 | 779 | # capabilities, we could filter out services not meeting the |
|
753 | 780 | # requirements. Possibly by consulting the interfaces defined by the |
|
754 | 781 | # peer type. |
|
755 | 782 | apipeerchoices = set(info.get('apis', {}).keys()) & set(API_PEERS.keys()) |
|
756 | 783 | |
|
757 | 784 | preferredchoices = sorted(apipeerchoices, |
|
758 | 785 | key=lambda x: API_PEERS[x]['priority'], |
|
759 | 786 | reverse=True) |
|
760 | 787 | |
|
761 | 788 | for service in preferredchoices: |
|
762 | 789 | apipath = '%s/%s' % (info['apibase'].rstrip('/'), service) |
|
763 | 790 | |
|
764 | 791 | return API_PEERS[service]['init'](ui, respurl, apipath, opener, |
|
765 | 792 | requestbuilder, |
|
766 | 793 | info['apis'][service]) |
|
767 | 794 | |
|
768 | 795 | # Failed to construct an API peer. Fall back to legacy. |
|
769 | 796 | return httppeer(ui, path, respurl, opener, requestbuilder, |
|
770 | 797 | info['v1capabilities']) |
|
771 | 798 | |
|
772 | 799 | def instance(ui, path, create): |
|
773 | 800 | if create: |
|
774 | 801 | raise error.Abort(_('cannot create new http repository')) |
|
775 | 802 | try: |
|
776 | 803 | if path.startswith('https:') and not urlmod.has_https: |
|
777 | 804 | raise error.Abort(_('Python support for SSL and HTTPS ' |
|
778 | 805 | 'is not installed')) |
|
779 | 806 | |
|
780 | 807 | inst = makepeer(ui, path) |
|
781 | 808 | |
|
782 | 809 | return inst |
|
783 | 810 | except error.RepoError as httpexception: |
|
784 | 811 | try: |
|
785 | 812 | r = statichttprepo.instance(ui, "static-" + path, create) |
|
786 | 813 | ui.note(_('(falling back to static-http)\n')) |
|
787 | 814 | return r |
|
788 | 815 | except error.RepoError: |
|
789 | 816 | raise httpexception # use the original http RepoError instead |
@@ -1,152 +1,154 b'' | |||
|
1 | 1 | # Test that certain objects conform to well-defined interfaces. |
|
2 | 2 | |
|
3 | 3 | from __future__ import absolute_import, print_function |
|
4 | 4 | |
|
5 | 5 | import os |
|
6 | 6 | |
|
7 | 7 | from mercurial.thirdparty.zope import ( |
|
8 | 8 | interface as zi, |
|
9 | 9 | ) |
|
10 | 10 | from mercurial.thirdparty.zope.interface import ( |
|
11 | 11 | verify as ziverify, |
|
12 | 12 | ) |
|
13 | 13 | from mercurial import ( |
|
14 | 14 | bundlerepo, |
|
15 | 15 | filelog, |
|
16 | 16 | httppeer, |
|
17 | 17 | localrepo, |
|
18 | 18 | repository, |
|
19 | 19 | sshpeer, |
|
20 | 20 | statichttprepo, |
|
21 | 21 | ui as uimod, |
|
22 | 22 | unionrepo, |
|
23 | 23 | vfs as vfsmod, |
|
24 | 24 | wireprotoserver, |
|
25 | 25 | wireprototypes, |
|
26 | 26 | wireprotov2server, |
|
27 | 27 | ) |
|
28 | 28 | |
|
29 | 29 | rootdir = os.path.normpath(os.path.join(os.path.dirname(__file__), '..')) |
|
30 | 30 | |
|
31 | 31 | def checkzobject(o, allowextra=False): |
|
32 | 32 | """Verify an object with a zope interface.""" |
|
33 | 33 | ifaces = zi.providedBy(o) |
|
34 | 34 | if not ifaces: |
|
35 | 35 | print('%r does not provide any zope interfaces' % o) |
|
36 | 36 | return |
|
37 | 37 | |
|
38 | 38 | # Run zope.interface's built-in verification routine. This verifies that |
|
39 | 39 | # everything that is supposed to be present is present. |
|
40 | 40 | for iface in ifaces: |
|
41 | 41 | ziverify.verifyObject(iface, o) |
|
42 | 42 | |
|
43 | 43 | if allowextra: |
|
44 | 44 | return |
|
45 | 45 | |
|
46 | 46 | # Now verify that the object provides no extra public attributes that |
|
47 | 47 | # aren't declared as part of interfaces. |
|
48 | 48 | allowed = set() |
|
49 | 49 | for iface in ifaces: |
|
50 | 50 | allowed |= set(iface.names(all=True)) |
|
51 | 51 | |
|
52 | 52 | public = {a for a in dir(o) if not a.startswith('_')} |
|
53 | 53 | |
|
54 | 54 | for attr in sorted(public - allowed): |
|
55 | 55 | print('public attribute not declared in interfaces: %s.%s' % ( |
|
56 | 56 | o.__class__.__name__, attr)) |
|
57 | 57 | |
|
58 | 58 | # Facilitates testing localpeer. |
|
59 | 59 | class dummyrepo(object): |
|
60 | 60 | def __init__(self): |
|
61 | 61 | self.ui = uimod.ui() |
|
62 | 62 | def filtered(self, name): |
|
63 | 63 | pass |
|
64 | 64 | def _restrictcapabilities(self, caps): |
|
65 | 65 | pass |
|
66 | 66 | |
|
67 | 67 | class dummyopener(object): |
|
68 | 68 | handlers = [] |
|
69 | 69 | |
|
70 | 70 | # Facilitates testing sshpeer without requiring a server. |
|
71 | 71 | class badpeer(httppeer.httppeer): |
|
72 | 72 | def __init__(self): |
|
73 | 73 | super(badpeer, self).__init__(None, None, None, dummyopener(), None, |
|
74 | 74 | None) |
|
75 | 75 | self.badattribute = True |
|
76 | 76 | |
|
77 | 77 | def badmethod(self): |
|
78 | 78 | pass |
|
79 | 79 | |
|
80 | 80 | class dummypipe(object): |
|
81 | 81 | def close(self): |
|
82 | 82 | pass |
|
83 | 83 | |
|
84 | 84 | def main(): |
|
85 | 85 | ui = uimod.ui() |
|
86 | 86 | # Needed so we can open a local repo with obsstore without a warning. |
|
87 | 87 | ui.setconfig('experimental', 'evolution.createmarkers', True) |
|
88 | 88 | |
|
89 | 89 | checkzobject(badpeer()) |
|
90 | 90 | |
|
91 | 91 | ziverify.verifyClass(repository.ipeerbaselegacycommands, |
|
92 | 92 | httppeer.httppeer) |
|
93 | 93 | checkzobject(httppeer.httppeer(None, None, None, dummyopener(), None, None)) |
|
94 | 94 | |
|
95 | 95 | ziverify.verifyClass(repository.ipeerconnection, |
|
96 | 96 | httppeer.httpv2peer) |
|
97 | ziverify.verifyClass(repository.ipeercapabilities, | |
|
98 | httppeer.httpv2peer) | |
|
97 | 99 | checkzobject(httppeer.httpv2peer(None, '', None, None, None, None)) |
|
98 | 100 | |
|
99 | 101 | ziverify.verifyClass(repository.ipeerbase, |
|
100 | 102 | localrepo.localpeer) |
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101 | 103 | checkzobject(localrepo.localpeer(dummyrepo())) |
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102 | 104 | |
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103 | 105 | ziverify.verifyClass(repository.ipeerbaselegacycommands, |
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104 | 106 | sshpeer.sshv1peer) |
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105 | 107 | checkzobject(sshpeer.sshv1peer(ui, 'ssh://localhost/foo', None, dummypipe(), |
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106 | 108 | dummypipe(), None, None)) |
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107 | 109 | |
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108 | 110 | ziverify.verifyClass(repository.ipeerbaselegacycommands, |
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109 | 111 | sshpeer.sshv2peer) |
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110 | 112 | checkzobject(sshpeer.sshv2peer(ui, 'ssh://localhost/foo', None, dummypipe(), |
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111 | 113 | dummypipe(), None, None)) |
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112 | 114 | |
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113 | 115 | ziverify.verifyClass(repository.ipeerbase, bundlerepo.bundlepeer) |
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114 | 116 | checkzobject(bundlerepo.bundlepeer(dummyrepo())) |
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115 | 117 | |
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116 | 118 | ziverify.verifyClass(repository.ipeerbase, statichttprepo.statichttppeer) |
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117 | 119 | checkzobject(statichttprepo.statichttppeer(dummyrepo())) |
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118 | 120 | |
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119 | 121 | ziverify.verifyClass(repository.ipeerbase, unionrepo.unionpeer) |
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120 | 122 | checkzobject(unionrepo.unionpeer(dummyrepo())) |
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121 | 123 | |
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122 | 124 | ziverify.verifyClass(repository.completelocalrepository, |
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123 | 125 | localrepo.localrepository) |
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124 | 126 | repo = localrepo.localrepository(ui, rootdir) |
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125 | 127 | checkzobject(repo) |
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126 | 128 | |
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127 | 129 | ziverify.verifyClass(wireprototypes.baseprotocolhandler, |
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128 | 130 | wireprotoserver.sshv1protocolhandler) |
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129 | 131 | ziverify.verifyClass(wireprototypes.baseprotocolhandler, |
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130 | 132 | wireprotoserver.sshv2protocolhandler) |
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131 | 133 | ziverify.verifyClass(wireprototypes.baseprotocolhandler, |
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132 | 134 | wireprotoserver.httpv1protocolhandler) |
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133 | 135 | ziverify.verifyClass(wireprototypes.baseprotocolhandler, |
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134 | 136 | wireprotov2server.httpv2protocolhandler) |
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135 | 137 | |
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136 | 138 | sshv1 = wireprotoserver.sshv1protocolhandler(None, None, None) |
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137 | 139 | checkzobject(sshv1) |
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138 | 140 | sshv2 = wireprotoserver.sshv2protocolhandler(None, None, None) |
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139 | 141 | checkzobject(sshv2) |
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140 | 142 | |
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141 | 143 | httpv1 = wireprotoserver.httpv1protocolhandler(None, None, None) |
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142 | 144 | checkzobject(httpv1) |
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143 | 145 | httpv2 = wireprotov2server.httpv2protocolhandler(None, None) |
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144 | 146 | checkzobject(httpv2) |
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145 | 147 | |
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146 | 148 | ziverify.verifyClass(repository.ifilestorage, filelog.filelog) |
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147 | 149 | |
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148 | 150 | vfs = vfsmod.vfs('.') |
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149 | 151 | fl = filelog.filelog(vfs, 'dummy.i') |
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150 | 152 | checkzobject(fl, allowextra=True) |
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151 | 153 | |
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152 | 154 | main() |
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