| 1 | import io |
| 2 | |
| 3 | __all__ = ["request"] |
| 4 | |
| 5 | class headdict(object): |
| 6 | def __init__(self): |
| 7 | self.dict = {} |
| 8 | |
| 9 | def __getitem__(self, key): |
| 10 | return self.dict[key.lower()][1] |
| 11 | |
| 12 | def __setitem__(self, key, val): |
| 13 | self.dict[key.lower()] = [key, val] |
| 14 | |
| 15 | def __contains__(self, key): |
| 16 | return key.lower() in self.dict |
| 17 | |
| 18 | def __delitem__(self, key): |
| 19 | del self.dict[key.lower()] |
| 20 | |
| 21 | def __iter__(self): |
| 22 | return iter((list[0] for list in self.dict.values())) |
| 23 | |
| 24 | def get(self, key, default = ""): |
| 25 | if key.lower() in self.dict: |
| 26 | return self.dict[key.lower()][1] |
| 27 | return default |
| 28 | |
| 29 | def getlist(self, key): |
| 30 | return self.dict.setdefault(key.lower(), [key])[1:] |
| 31 | |
| 32 | def add(self, key, val): |
| 33 | self.dict.setdefault(key.lower(), [key]).append(val) |
| 34 | |
| 35 | def __repr__(self): |
| 36 | return repr(self.dict) |
| 37 | |
| 38 | def __str__(self): |
| 39 | return str(self.dict) |
| 40 | |
| 41 | def fixcase(str): |
| 42 | str = str.lower() |
| 43 | i = 0 |
| 44 | b = True |
| 45 | while i < len(str): |
| 46 | if b: |
| 47 | str = str[:i] + str[i].upper() + str[i + 1:] |
| 48 | b = False |
| 49 | if str[i] == '-': |
| 50 | b = True |
| 51 | i += 1 |
| 52 | return str |
| 53 | |
| 54 | class limitreader(object): |
| 55 | def __init__(self, back, limit): |
| 56 | self.bk = back |
| 57 | self.limit = limit |
| 58 | self.rb = 0 |
| 59 | self.buf = bytearray() |
| 60 | |
| 61 | def close(self): |
| 62 | pass |
| 63 | |
| 64 | def read(self, size=-1): |
| 65 | ra = self.limit - self.rb |
| 66 | if size >= 0: |
| 67 | ra = min(ra, size) |
| 68 | while len(self.buf) < ra: |
| 69 | ret = self.bk.read(ra - len(self.buf)) |
| 70 | if ret == b"": |
| 71 | raise IOError("Unexpected EOF") |
| 72 | self.buf.extend(ret) |
| 73 | self.rb += len(ret) |
| 74 | ret = bytes(self.buf[:ra]) |
| 75 | self.buf = self.buf[ra:] |
| 76 | return ret |
| 77 | |
| 78 | def readline(self, size=-1): |
| 79 | off = 0 |
| 80 | while True: |
| 81 | p = self.buf.find(b'\n', off) |
| 82 | if p >= 0: |
| 83 | ret = bytes(self.buf[:p + 1]) |
| 84 | self.buf = self.buf[p + 1:] |
| 85 | return ret |
| 86 | off = len(self.buf) |
| 87 | if size >= 0 and len(self.buf) >= size: |
| 88 | ret = bytes(self.buf[:size]) |
| 89 | self.buf = self.buf[size:] |
| 90 | return ret |
| 91 | if self.rb == self.limit: |
| 92 | ret = bytes(self.buf) |
| 93 | self.buf = bytearray() |
| 94 | return ret |
| 95 | ra = self.limit - self.rb |
| 96 | if size >= 0: |
| 97 | ra = min(ra, size) |
| 98 | ra = min(ra, 1024) |
| 99 | ret = self.bk.read(ra) |
| 100 | if ret == b"": |
| 101 | raise IOError("Unpexpected EOF") |
| 102 | self.buf.extend(ret) |
| 103 | self.rb += len(ret) |
| 104 | |
| 105 | def readlines(self, hint=None): |
| 106 | return list(self) |
| 107 | |
| 108 | def __iter__(rd): |
| 109 | class lineiter(object): |
| 110 | def __iter__(self): |
| 111 | return self |
| 112 | def __next__(self): |
| 113 | ret = rd.readline() |
| 114 | if ret == b"": |
| 115 | raise StopIteration() |
| 116 | return ret |
| 117 | return lineiter() |
| 118 | |
| 119 | class request(object): |
| 120 | def copy(self): |
| 121 | return copyrequest(self) |
| 122 | |
| 123 | def shift(self, n): |
| 124 | new = self.copy() |
| 125 | new.uriname = self.uriname + self.pathinfo[:n] |
| 126 | new.pathinfo = self.pathinfo[n:] |
| 127 | return new |
| 128 | |
| 129 | class origrequest(request): |
| 130 | def __init__(self, env): |
| 131 | self.env = env |
| 132 | self.method = env["REQUEST_METHOD"].upper() |
| 133 | self.uriname = env["SCRIPT_NAME"] |
| 134 | self.filename = env.get("SCRIPT_FILENAME") |
| 135 | self.uri = env["REQUEST_URI"] |
| 136 | self.pathinfo = env["PATH_INFO"] |
| 137 | self.query = env["QUERY_STRING"] |
| 138 | self.remoteaddr = env["REMOTE_ADDR"] |
| 139 | self.serverport = env["SERVER_PORT"] |
| 140 | self.servername = env["SERVER_NAME"] |
| 141 | self.https = "HTTPS" in env |
| 142 | self.ihead = headdict() |
| 143 | if "CONTENT_TYPE" in env: |
| 144 | self.ihead["Content-Type"] = env["CONTENT_TYPE"] |
| 145 | if "CONTENT_LENGTH" in env: |
| 146 | clen = self.ihead["Content-Length"] = env["CONTENT_LENGTH"] |
| 147 | if clen.isdigit(): |
| 148 | self.input = limitreader(env["wsgi.input"], int(clen)) |
| 149 | else: |
| 150 | # XXX: What to do? |
| 151 | self.input = io.BytesIO(b"") |
| 152 | else: |
| 153 | # Assume input is chunked and read until ordinary EOF. |
| 154 | self.input = env["wsgi.input"] |
| 155 | else: |
| 156 | self.input = None |
| 157 | self.ohead = headdict() |
| 158 | for k, v in env.items(): |
| 159 | if k[:5] == "HTTP_": |
| 160 | self.ihead.add(fixcase(k[5:].replace("_", "-")), v) |
| 161 | self.items = {} |
| 162 | self.statuscode = (200, "OK") |
| 163 | self.ohead["Content-Type"] = "text/html" |
| 164 | self.resources = set() |
| 165 | self.clean = set() |
| 166 | self.commitfuns = [] |
| 167 | |
| 168 | def status(self, code, msg): |
| 169 | self.statuscode = code, msg |
| 170 | |
| 171 | def item(self, id): |
| 172 | if id in self.items: |
| 173 | return self.items[id] |
| 174 | self.items[id] = new = id(self) |
| 175 | if hasattr(new, "__enter__") and hasattr(new, "__exit__"): |
| 176 | self.withres(new) |
| 177 | return new |
| 178 | |
| 179 | def withres(self, res): |
| 180 | if res not in self.resources: |
| 181 | done = False |
| 182 | res.__enter__() |
| 183 | try: |
| 184 | self.resources.add(res) |
| 185 | self.clean.add(res.__exit__) |
| 186 | done = True |
| 187 | finally: |
| 188 | if not done: |
| 189 | res.__exit__(None, None, None) |
| 190 | self.resources.discard(res) |
| 191 | |
| 192 | def cleanup(self): |
| 193 | def clean1(list): |
| 194 | if len(list) > 0: |
| 195 | try: |
| 196 | list[0]() |
| 197 | finally: |
| 198 | clean1(list[1:]) |
| 199 | clean1(list(self.clean)) |
| 200 | |
| 201 | def oncommit(self, fn): |
| 202 | if fn not in self.commitfuns: |
| 203 | self.commitfuns.append(fn) |
| 204 | |
| 205 | def commit(self, startreq): |
| 206 | for fun in reversed(self.commitfuns): |
| 207 | fun(self) |
| 208 | hdrs = [] |
| 209 | for nm in self.ohead: |
| 210 | for val in self.ohead.getlist(nm): |
| 211 | hdrs.append((nm, val)) |
| 212 | startreq("%s %s" % self.statuscode, hdrs) |
| 213 | |
| 214 | def topreq(self): |
| 215 | return self |
| 216 | |
| 217 | class copyrequest(request): |
| 218 | def __init__(self, p): |
| 219 | self.parent = p |
| 220 | self.top = p.topreq() |
| 221 | self.env = p.env |
| 222 | self.method = p.method |
| 223 | self.uriname = p.uriname |
| 224 | self.filename = p.filename |
| 225 | self.uri = p.uri |
| 226 | self.pathinfo = p.pathinfo |
| 227 | self.query = p.query |
| 228 | self.remoteaddr = p.remoteaddr |
| 229 | self.serverport = p.serverport |
| 230 | self.https = p.https |
| 231 | self.ihead = p.ihead |
| 232 | self.ohead = p.ohead |
| 233 | |
| 234 | def status(self, code, msg): |
| 235 | return self.parent.status(code, msg) |
| 236 | |
| 237 | def item(self, id): |
| 238 | return self.top.item(id) |
| 239 | |
| 240 | def withres(self, res): |
| 241 | return self.top.withres(res) |
| 242 | |
| 243 | def oncommit(self, fn): |
| 244 | return self.top.oncommit(fn) |
| 245 | |
| 246 | def topreq(self): |
| 247 | return self.parent.topreq() |