| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | // | ||
| 2 | // Copyright (c) 2025 Vinnie Falco (vinnie dot falco at gmail dot com) | ||
| 3 | // | ||
| 4 | // Distributed under the Boost Software License, Version 1.0. (See accompanying | ||
| 5 | // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | ||
| 6 | // | ||
| 7 | // Official repository: https://github.com/cppalliance/http_proto | ||
| 8 | // | ||
| 9 | |||
| 10 | #include "src/server/route_rule.hpp" | ||
| 11 | #include <boost/http_proto/server/basic_router.hpp> | ||
| 12 | #include <boost/http_proto/server/route_handler.hpp> | ||
| 13 | #include <boost/http_proto/error.hpp> | ||
| 14 | #include <boost/http_proto/detail/except.hpp> | ||
| 15 | #include <boost/url/grammar/ci_string.hpp> | ||
| 16 | #include <boost/url/grammar/hexdig_chars.hpp> | ||
| 17 | #include <boost/assert.hpp> | ||
| 18 | #include <atomic> | ||
| 19 | #include <string> | ||
| 20 | #include <vector> | ||
| 21 | |||
| 22 | namespace boost { | ||
| 23 | namespace http_proto { | ||
| 24 | |||
| 25 | //namespace detail { | ||
| 26 | |||
| 27 | // VFALCO Temporarily here until Boost.URL merges the fix | ||
| 28 | static | ||
| 29 | bool | ||
| 30 | 96 | ci_is_equal( | |
| 31 | core::string_view s0, | ||
| 32 | core::string_view s1) noexcept | ||
| 33 | { | ||
| 34 | 96 | auto n = s0.size(); | |
| 35 |
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96 | if(s1.size() != n) |
| 36 | ✗ | return false; | |
| 37 | 96 | auto p1 = s0.data(); | |
| 38 | 96 | auto p2 = s1.data(); | |
| 39 | char a, b; | ||
| 40 | // fast loop | ||
| 41 |
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387 | while(n--) |
| 42 | { | ||
| 43 | 313 | a = *p1++; | |
| 44 | 313 | b = *p2++; | |
| 45 |
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313 | if(a != b) |
| 46 | 22 | goto slow; | |
| 47 | } | ||
| 48 | 74 | return true; | |
| 49 | do | ||
| 50 | { | ||
| 51 | 3 | a = *p1++; | |
| 52 | 3 | b = *p2++; | |
| 53 | 25 | slow: | |
| 54 |
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50 | if( grammar::to_lower(a) != |
| 55 | 25 | grammar::to_lower(b)) | |
| 56 | 19 | return false; | |
| 57 | } | ||
| 58 |
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6 | while(n--); |
| 59 | 3 | return true; | |
| 60 | } | ||
| 61 | |||
| 62 | |||
| 63 | //------------------------------------------------ | ||
| 64 | /* | ||
| 65 | |||
| 66 | pattern target path(use) path(get) | ||
| 67 | ------------------------------------------------- | ||
| 68 | / / / | ||
| 69 | / /api /api | ||
| 70 | /api /api / /api | ||
| 71 | /api /api/ / /api/ | ||
| 72 | /api /api/ / no-match strict | ||
| 73 | /api /api/v0 /v0 no-match | ||
| 74 | /api/ /api / /api | ||
| 75 | /api/ /api / no-match strict | ||
| 76 | /api/ /api/ / /api/ | ||
| 77 | /api/ /api/v0 /v0 no-match | ||
| 78 | |||
| 79 | */ | ||
| 80 | |||
| 81 | //------------------------------------------------ | ||
| 82 | |||
| 83 | /* | ||
| 84 | static | ||
| 85 | void | ||
| 86 | make_lower(std::string& s) | ||
| 87 | { | ||
| 88 | for(auto& c : s) | ||
| 89 | c = grammar::to_lower(c); | ||
| 90 | } | ||
| 91 | */ | ||
| 92 | |||
| 93 | // decode all percent escapes | ||
| 94 | static | ||
| 95 | std::string | ||
| 96 | 248 | pct_decode( | |
| 97 | urls::pct_string_view s) | ||
| 98 | { | ||
| 99 | 248 | std::string result; | |
| 100 | 248 | core::string_view sv(s); | |
| 101 |
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248 | result.reserve(s.size()); |
| 102 | 248 | auto it = sv.data(); | |
| 103 | 248 | auto const end = it + sv.size(); | |
| 104 | for(;;) | ||
| 105 | { | ||
| 106 |
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771 | if(it == end) |
| 107 | 248 | break; | |
| 108 |
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523 | if(*it != '%') |
| 109 | { | ||
| 110 |
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521 | result.push_back(*it++); |
| 111 | 521 | continue; | |
| 112 | } | ||
| 113 | 2 | ++it; | |
| 114 | #if 0 | ||
| 115 | // pct_string_view can never have invalid pct-encodings | ||
| 116 | if(it == end) | ||
| 117 | goto invalid; | ||
| 118 | #endif | ||
| 119 | 2 | auto d0 = urls::grammar::hexdig_value(*it++); | |
| 120 | #if 0 | ||
| 121 | // pct_string_view can never have invalid pct-encodings | ||
| 122 | if( d0 < 0 || | ||
| 123 | it == end) | ||
| 124 | goto invalid; | ||
| 125 | #endif | ||
| 126 | 2 | auto d1 = urls::grammar::hexdig_value(*it++); | |
| 127 | #if 0 | ||
| 128 | // pct_string_view can never have invalid pct-encodings | ||
| 129 | if(d1 < 0) | ||
| 130 | goto invalid; | ||
| 131 | #endif | ||
| 132 |
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2 | result.push_back(d0 * 16 + d1); |
| 133 | 523 | } | |
| 134 | 496 | return result; | |
| 135 | #if 0 | ||
| 136 | invalid: | ||
| 137 | // can't get here, as received a pct_string_view | ||
| 138 | detail::throw_invalid_argument(); | ||
| 139 | #endif | ||
| 140 | ✗ | } | |
| 141 | |||
| 142 | // decode all percent escapes except slashes '/' and '\' | ||
| 143 | static | ||
| 144 | std::string | ||
| 145 | 173 | pct_decode_path( | |
| 146 | urls::pct_string_view s) | ||
| 147 | { | ||
| 148 | 173 | std::string result; | |
| 149 | 173 | core::string_view sv(s); | |
| 150 |
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173 | result.reserve(s.size()); |
| 151 | 173 | auto it = sv.data(); | |
| 152 | 173 | auto const end = it + sv.size(); | |
| 153 | for(;;) | ||
| 154 | { | ||
| 155 |
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601 | if(it == end) |
| 156 | 173 | break; | |
| 157 |
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428 | if(*it != '%') |
| 158 | { | ||
| 159 |
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424 | result.push_back(*it++); |
| 160 | 424 | continue; | |
| 161 | } | ||
| 162 | 4 | ++it; | |
| 163 | #if 0 | ||
| 164 | // pct_string_view can never have invalid pct-encodings | ||
| 165 | if(it == end) | ||
| 166 | goto invalid; | ||
| 167 | #endif | ||
| 168 | 4 | auto d0 = urls::grammar::hexdig_value(*it++); | |
| 169 | #if 0 | ||
| 170 | // pct_string_view can never have invalid pct-encodings | ||
| 171 | if( d0 < 0 || | ||
| 172 | it == end) | ||
| 173 | goto invalid; | ||
| 174 | #endif | ||
| 175 | 4 | auto d1 = urls::grammar::hexdig_value(*it++); | |
| 176 | #if 0 | ||
| 177 | // pct_string_view can never have invalid pct-encodings | ||
| 178 | if(d1 < 0) | ||
| 179 | goto invalid; | ||
| 180 | #endif | ||
| 181 | 4 | char c = d0 * 16 + d1; | |
| 182 |
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4 | if( c != '/' && |
| 183 | c != '\\') | ||
| 184 | { | ||
| 185 |
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2 | result.push_back(c); |
| 186 | 2 | continue; | |
| 187 | } | ||
| 188 |
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2 | result.append(it - 3, 3); |
| 189 | 428 | } | |
| 190 | 346 | return result; | |
| 191 | #if 0 | ||
| 192 | invalid: | ||
| 193 | // can't get here, as received a pct_string_view | ||
| 194 | detail::throw_invalid_argument(); | ||
| 195 | #endif | ||
| 196 | ✗ | } | |
| 197 | |||
| 198 | //------------------------------------------------ | ||
| 199 | |||
| 200 | //} // detail | ||
| 201 | |||
| 202 | struct basic_request:: | ||
| 203 | match_result | ||
| 204 | { | ||
| 205 | 246 | void adjust_path( | |
| 206 | basic_request& req, | ||
| 207 | std::size_t n) | ||
| 208 | { | ||
| 209 | 246 | n_ = n; | |
| 210 |
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246 | if(n_ == 0) |
| 211 | 165 | return; | |
| 212 | 81 | req.base_path = { | |
| 213 | req.base_path.data(), | ||
| 214 | 81 | req.base_path.size() + n_ }; | |
| 215 |
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81 | if(n_ < req.path.size()) |
| 216 | { | ||
| 217 | 27 | req.path.remove_prefix(n_); | |
| 218 | } | ||
| 219 | else | ||
| 220 | { | ||
| 221 | // append a soft slash | ||
| 222 | 54 | req.path = { req.decoded_path_.data() + | |
| 223 | 54 | req.decoded_path_.size() - 1, 1}; | |
| 224 |
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54 | BOOST_ASSERT(req.path == "/"); |
| 225 | } | ||
| 226 | } | ||
| 227 | |||
| 228 | 115 | void restore_path( | |
| 229 | basic_request& req) | ||
| 230 | { | ||
| 231 | 256 | if( n_ > 0 && | |
| 232 |
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140 | req.addedSlash_ && |
| 233 | 25 | req.path.data() == | |
| 234 | 25 | req.decoded_path_.data() + | |
| 235 |
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25 | req.decoded_path_.size() - 1) |
| 236 | { | ||
| 237 | // remove soft slash | ||
| 238 | 19 | req.path = { | |
| 239 | 19 | req.base_path.data() + | |
| 240 | 19 | req.base_path.size(), 0 }; | |
| 241 | } | ||
| 242 | 115 | req.base_path.remove_suffix(n_); | |
| 243 | 345 | req.path = { | |
| 244 | 115 | req.path.data() - n_, | |
| 245 | 115 | req.path.size() + n_ }; | |
| 246 | 115 | } | |
| 247 | |||
| 248 | private: | ||
| 249 | std::size_t n_ = 0; // chars moved from path to base_path | ||
| 250 | }; | ||
| 251 | |||
| 252 | //------------------------------------------------ | ||
| 253 | |||
| 254 | //namespace detail { | ||
| 255 | |||
| 256 | // Matches a path against a pattern | ||
| 257 | struct any_router::matcher | ||
| 258 | { | ||
| 259 | bool const end; // false for middleware | ||
| 260 | |||
| 261 | 248 | matcher( | |
| 262 | core::string_view pat, | ||
| 263 | bool end_) | ||
| 264 | 248 | : end(end_) | |
| 265 |
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248 | , decoded_pat_( |
| 266 | ✗ | [&pat] | |
| 267 | { | ||
| 268 |
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248 | auto s = pct_decode(pat); |
| 269 | 248 | if( s.size() > 1 | |
| 270 |
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248 | && s.back() == '/') |
| 271 | 6 | s.pop_back(); | |
| 272 | 248 | return s; | |
| 273 |
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496 | }()) |
| 274 | 248 | , slash_(pat == "/") | |
| 275 | { | ||
| 276 |
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248 | if(! slash_) |
| 277 |
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116 | pv_ = grammar::parse( |
| 278 |
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116 | decoded_pat_, path_rule).value(); |
| 279 | 248 | } | |
| 280 | |||
| 281 | /** Return true if req.path is a match | ||
| 282 | */ | ||
| 283 | 281 | bool operator()( | |
| 284 | basic_request& req, | ||
| 285 | match_result& mr) const | ||
| 286 | { | ||
| 287 |
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281 | BOOST_ASSERT(! req.path.empty()); |
| 288 |
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446 | if( slash_ && ( |
| 289 |
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219 | ! end || |
| 290 |
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335 | req.path == "/")) |
| 291 | { | ||
| 292 | // params = {}; | ||
| 293 | 165 | mr.adjust_path(req, 0); | |
| 294 | 165 | return true; | |
| 295 | } | ||
| 296 | 116 | auto it = req.path.data(); | |
| 297 | 116 | auto pit = pv_.segs.begin(); | |
| 298 | 116 | auto const end_ = it + req.path.size(); | |
| 299 | 116 | auto const pend = pv_.segs.end(); | |
| 300 |
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197 | while(it != end_ && pit != pend) |
| 301 | { | ||
| 302 | // prefix has to match | ||
| 303 | 116 | auto s = core::string_view(it, end_); | |
| 304 |
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116 | if(! req.case_sensitive) |
| 305 | { | ||
| 306 |
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110 | if(pit->prefix.size() > s.size()) |
| 307 | 35 | return false; | |
| 308 |
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96 | s = s.substr(0, pit->prefix.size()); |
| 309 | //if(! grammar::ci_is_equal(s, pit->prefix)) | ||
| 310 |
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96 | if(! ci_is_equal(s, pit->prefix)) |
| 311 | 19 | return false; | |
| 312 | } | ||
| 313 | else | ||
| 314 | { | ||
| 315 |
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6 | if(! s.starts_with(pit->prefix)) |
| 316 | 2 | return false; | |
| 317 | } | ||
| 318 | 81 | it += pit->prefix.size(); | |
| 319 | 81 | ++pit; | |
| 320 | } | ||
| 321 |
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81 | if(end) |
| 322 | { | ||
| 323 | // require full match | ||
| 324 |
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42 | if( it != end_ || |
| 325 | 21 | pit != pend) | |
| 326 | ✗ | return false; | |
| 327 | } | ||
| 328 |
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60 | else if(pit != pend) |
| 329 | { | ||
| 330 | ✗ | return false; | |
| 331 | } | ||
| 332 | // number of matching characters | ||
| 333 | 81 | auto const n = it - req.path.data(); | |
| 334 | 81 | mr.adjust_path(req, n); | |
| 335 | 81 | return true; | |
| 336 | } | ||
| 337 | |||
| 338 | private: | ||
| 339 | stable_string decoded_pat_; | ||
| 340 | path_rule_t::value_type pv_; | ||
| 341 | bool slash_; | ||
| 342 | }; | ||
| 343 | |||
| 344 | //------------------------------------------------ | ||
| 345 | |||
| 346 | struct any_router::layer | ||
| 347 | { | ||
| 348 | struct entry | ||
| 349 | { | ||
| 350 | handler_ptr handler; | ||
| 351 | |||
| 352 | // only for end routes | ||
| 353 | http_proto::method verb = | ||
| 354 | http_proto::method::unknown; | ||
| 355 | std::string verb_str; | ||
| 356 | bool all; | ||
| 357 | |||
| 358 | 250 | explicit entry( | |
| 359 | handler_ptr h) noexcept | ||
| 360 | 250 | : handler(std::move(h)) | |
| 361 | 250 | , all(true) | |
| 362 | { | ||
| 363 | 250 | } | |
| 364 | |||
| 365 | 70 | entry( | |
| 366 | http_proto::method verb_, | ||
| 367 | handler_ptr h) noexcept | ||
| 368 | 70 | : handler(std::move(h)) | |
| 369 | 70 | , verb(verb_) | |
| 370 | 70 | , all(false) | |
| 371 | { | ||
| 372 |
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70 | BOOST_ASSERT(verb != |
| 373 | http_proto::method::unknown); | ||
| 374 | 70 | } | |
| 375 | |||
| 376 | 9 | entry( | |
| 377 | core::string_view verb_str_, | ||
| 378 | handler_ptr h) noexcept | ||
| 379 | 9 | : handler(std::move(h)) | |
| 380 | 9 | , verb(http_proto::string_to_method(verb_str_)) | |
| 381 | 9 | , all(false) | |
| 382 | { | ||
| 383 |
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9 | if(verb != http_proto::method::unknown) |
| 384 | 2 | return; | |
| 385 | 7 | verb_str = verb_str_; | |
| 386 | } | ||
| 387 | |||
| 388 | 107 | bool match_method( | |
| 389 | basic_request const& req) const noexcept | ||
| 390 | { | ||
| 391 |
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107 | if(all) |
| 392 | 12 | return true; | |
| 393 |
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95 | if(verb != http_proto::method::unknown) |
| 394 | 80 | return req.verb_ == verb; | |
| 395 |
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15 | if(req.verb_ != http_proto::method::unknown) |
| 396 | 1 | return false; | |
| 397 | 14 | return req.verb_str_ == verb_str; | |
| 398 | } | ||
| 399 | }; | ||
| 400 | |||
| 401 | matcher match; | ||
| 402 | std::vector<entry> entries; | ||
| 403 | |||
| 404 | // middleware layer | ||
| 405 | 186 | layer( | |
| 406 | core::string_view pat, | ||
| 407 | handler_list handlers) | ||
| 408 | 186 | : match(pat, false) | |
| 409 | { | ||
| 410 |
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186 | entries.reserve(handlers.n); |
| 411 |
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422 | for(std::size_t i = 0; i < handlers.n; ++i) |
| 412 |
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236 | entries.emplace_back(std::move(handlers.p[i])); |
| 413 | 186 | } | |
| 414 | |||
| 415 | // route layer | ||
| 416 | 62 | explicit layer( | |
| 417 | core::string_view pat) | ||
| 418 | 62 | : match(pat, true) | |
| 419 | { | ||
| 420 | 62 | } | |
| 421 | |||
| 422 | 45 | std::size_t count() const noexcept | |
| 423 | { | ||
| 424 | 45 | std::size_t n = 0; | |
| 425 |
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96 | for(auto const& e : entries) |
| 426 | 51 | n += e.handler->count(); | |
| 427 | 45 | return n; | |
| 428 | } | ||
| 429 | }; | ||
| 430 | |||
| 431 | //------------------------------------------------ | ||
| 432 | |||
| 433 | struct any_router::impl | ||
| 434 | { | ||
| 435 | std::atomic<std::size_t> refs{1}; | ||
| 436 | std::vector<layer> layers; | ||
| 437 | opt_flags opt; | ||
| 438 | |||
| 439 | 137 | explicit impl( | |
| 440 | opt_flags opt_) noexcept | ||
| 441 | 137 | : opt(opt_) | |
| 442 | { | ||
| 443 | 137 | } | |
| 444 | }; | ||
| 445 | |||
| 446 | //------------------------------------------------ | ||
| 447 | |||
| 448 | 153 | any_router:: | |
| 449 | 137 | ~any_router() | |
| 450 | { | ||
| 451 |
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153 | if(! impl_) |
| 452 | 16 | return; | |
| 453 |
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137 | if(--impl_->refs == 0) |
| 454 |
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135 | delete impl_; |
| 455 | 153 | } | |
| 456 | |||
| 457 | 137 | any_router:: | |
| 458 | any_router( | ||
| 459 | 137 | opt_flags opt) | |
| 460 | 137 | : impl_(new impl(opt)) | |
| 461 | { | ||
| 462 | 137 | } | |
| 463 | |||
| 464 | 15 | any_router:: | |
| 465 | 15 | any_router(any_router&& other) noexcept | |
| 466 | 15 | :impl_(other.impl_) | |
| 467 | { | ||
| 468 | 15 | other.impl_ = nullptr; | |
| 469 | 15 | } | |
| 470 | |||
| 471 | 1 | any_router:: | |
| 472 | 1 | any_router(any_router const& other) noexcept | |
| 473 | { | ||
| 474 | 1 | impl_ = other.impl_; | |
| 475 | 1 | ++impl_->refs; | |
| 476 | 1 | } | |
| 477 | |||
| 478 | any_router& | ||
| 479 | 1 | any_router:: | |
| 480 | operator=(any_router&& other) noexcept | ||
| 481 | { | ||
| 482 | 1 | auto p = impl_; | |
| 483 | 1 | impl_ = other.impl_; | |
| 484 | 1 | other.impl_ = nullptr; | |
| 485 |
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1 | if(p && --p->refs == 0) |
| 486 |
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1 | delete p; |
| 487 | 1 | return *this; | |
| 488 | } | ||
| 489 | |||
| 490 | any_router& | ||
| 491 | 1 | any_router:: | |
| 492 | operator=(any_router const& other) noexcept | ||
| 493 | { | ||
| 494 | 1 | auto p = impl_; | |
| 495 | 1 | impl_ = other.impl_; | |
| 496 | 1 | ++impl_->refs; | |
| 497 |
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1 | if(p && --p->refs == 0) |
| 498 |
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1 | delete p; |
| 499 | 1 | return *this; | |
| 500 | } | ||
| 501 | |||
| 502 | //------------------------------------------------ | ||
| 503 | |||
| 504 | std::size_t | ||
| 505 | 4 | any_router:: | |
| 506 | count() const noexcept | ||
| 507 | { | ||
| 508 | 4 | std::size_t n = 0; | |
| 509 |
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8 | for(auto const& i : impl_->layers) |
| 510 |
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20 | for(auto const& e : i.entries) |
| 511 | 16 | n += e.handler->count(); | |
| 512 | 4 | return n; | |
| 513 | } | ||
| 514 | |||
| 515 | auto | ||
| 516 | 63 | any_router:: | |
| 517 | new_layer( | ||
| 518 | core::string_view pattern) -> layer& | ||
| 519 | { | ||
| 520 | // the pattern must not be empty | ||
| 521 |
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63 | if(pattern.empty()) |
| 522 | 1 | detail::throw_invalid_argument(); | |
| 523 | // delete the last route if it is empty, | ||
| 524 | // this happens if they call route() without | ||
| 525 | // adding anything | ||
| 526 |
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92 | if(! impl_->layers.empty() && |
| 527 | 30 | impl_->layers.back().entries.empty()) | |
| 528 | 1 | impl_->layers.pop_back(); | |
| 529 | 62 | impl_->layers.emplace_back(pattern); | |
| 530 | 62 | return impl_->layers.back(); | |
| 531 | }; | ||
| 532 | |||
| 533 | void | ||
| 534 | 186 | any_router:: | |
| 535 | add_impl( | ||
| 536 | core::string_view pattern, | ||
| 537 | handler_list const& handlers) | ||
| 538 | { | ||
| 539 |
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186 | if( pattern.empty()) |
| 540 | 106 | pattern = "/"; | |
| 541 | 186 | impl_->layers.emplace_back( | |
| 542 | 186 | pattern, std::move(handlers)); | |
| 543 | 186 | } | |
| 544 | |||
| 545 | void | ||
| 546 | 68 | any_router:: | |
| 547 | add_impl( | ||
| 548 | layer& e, | ||
| 549 | http_proto::method verb, | ||
| 550 | handler_list const& handlers) | ||
| 551 | { | ||
| 552 | // cannot be unknown | ||
| 553 |
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68 | if(verb == http_proto::method::unknown) |
| 554 | 1 | detail::throw_invalid_argument(); | |
| 555 | |||
| 556 | 67 | e.entries.reserve(e.entries.size() + handlers.n); | |
| 557 |
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137 | for(std::size_t i = 0; i < handlers.n; ++i) |
| 558 | 70 | e.entries.emplace_back(verb, | |
| 559 | 70 | std::move(handlers.p[i])); | |
| 560 | 67 | } | |
| 561 | |||
| 562 | void | ||
| 563 | 23 | any_router:: | |
| 564 | add_impl( | ||
| 565 | layer& e, | ||
| 566 | core::string_view verb_str, | ||
| 567 | handler_list const& handlers) | ||
| 568 | { | ||
| 569 | 23 | e.entries.reserve(e.entries.size() + handlers.n); | |
| 570 | |||
| 571 |
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23 | if(verb_str.empty()) |
| 572 | { | ||
| 573 | // all | ||
| 574 |
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28 | for(std::size_t i = 0; i < handlers.n; ++i) |
| 575 | 14 | e.entries.emplace_back( | |
| 576 | 14 | std::move(handlers.p[i])); | |
| 577 | 14 | return; | |
| 578 | } | ||
| 579 | |||
| 580 | // possibly custom string | ||
| 581 |
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18 | for(std::size_t i = 0; i < handlers.n; ++i) |
| 582 | 9 | e.entries.emplace_back(verb_str, | |
| 583 | 9 | std::move(handlers.p[i])); | |
| 584 | } | ||
| 585 | |||
| 586 | //------------------------------------------------ | ||
| 587 | |||
| 588 | auto | ||
| 589 | 9 | any_router:: | |
| 590 | resume_impl( | ||
| 591 | basic_request& req, basic_response& res, | ||
| 592 | route_result ec) const -> | ||
| 593 | route_result | ||
| 594 | { | ||
| 595 |
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9 | BOOST_ASSERT(res.resume_ > 0); |
| 596 |
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17 | if( ec == route::send || |
| 597 |
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17 | ec == route::close || |
| 598 |
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16 | ec == route::complete) |
| 599 | 3 | return ec; | |
| 600 |
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6 | if(! is_route_result(ec)) |
| 601 | { | ||
| 602 | // must indicate failure | ||
| 603 |
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2 | if(! ec.failed()) |
| 604 | 2 | detail::throw_invalid_argument(); | |
| 605 | } | ||
| 606 | |||
| 607 | // restore base_path and path | ||
| 608 | 4 | req.base_path = { req.decoded_path_.data(), 0 }; | |
| 609 | 4 | req.path = req.decoded_path_; | |
| 610 |
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4 | if(req.addedSlash_) |
| 611 | 1 | req.path.remove_suffix(1); | |
| 612 | |||
| 613 | // resume_ was set in the handler's wrapper | ||
| 614 |
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4 | BOOST_ASSERT(res.resume_ == res.pos_); |
| 615 | 4 | res.pos_ = 0; | |
| 616 | 4 | res.ec_ = ec; | |
| 617 | 4 | return do_dispatch(req, res); | |
| 618 | } | ||
| 619 | |||
| 620 | // top-level dispatch that gets called first | ||
| 621 | route_result | ||
| 622 | 173 | any_router:: | |
| 623 | dispatch_impl( | ||
| 624 | http_proto::method verb, | ||
| 625 | core::string_view verb_str, | ||
| 626 | urls::url_view const& url, | ||
| 627 | basic_request& req, | ||
| 628 | basic_response& res) const | ||
| 629 | { | ||
| 630 | // VFALCO we could reuse the string storage by not clearing them | ||
| 631 | // set req.case_sensitive, req.strict to default of false | ||
| 632 | 173 | req = {}; | |
| 633 |
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173 | if(verb == http_proto::method::unknown) |
| 634 | { | ||
| 635 |
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33 | BOOST_ASSERT(! verb_str.empty()); |
| 636 | 33 | verb = http_proto::string_to_method(verb_str); | |
| 637 |
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33 | if(verb == http_proto::method::unknown) |
| 638 |
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21 | req.verb_str_ = verb_str; |
| 639 | } | ||
| 640 | else | ||
| 641 | { | ||
| 642 |
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140 | BOOST_ASSERT(verb_str.empty()); |
| 643 | } | ||
| 644 | 173 | req.verb_ = verb; | |
| 645 | // VFALCO use reusing-StringToken | ||
| 646 | req.decoded_path_ = | ||
| 647 |
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173 | pct_decode_path(url.encoded_path()); |
| 648 |
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173 | BOOST_ASSERT(! req.decoded_path_.empty()); |
| 649 | 173 | req.base_path = { req.decoded_path_.data(), 0 }; | |
| 650 | 173 | req.path = req.decoded_path_; | |
| 651 |
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173 | if(req.decoded_path_.back() != '/') |
| 652 | { | ||
| 653 | 55 | req.decoded_path_.push_back('/'); | |
| 654 | 55 | req.addedSlash_ = true; | |
| 655 | } | ||
| 656 |
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173 | BOOST_ASSERT(req.case_sensitive == false); |
| 657 |
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173 | BOOST_ASSERT(req.strict == false); |
| 658 | |||
| 659 | 173 | res = {}; | |
| 660 | |||
| 661 | // we cannot do anything after do_dispatch returns, | ||
| 662 | // other than return the route_result, or else we | ||
| 663 | // could race with the detached operation trying to resume. | ||
| 664 | 173 | return do_dispatch(req, res); | |
| 665 | } | ||
| 666 | |||
| 667 | // recursive dispatch | ||
| 668 | route_result | ||
| 669 | 193 | any_router:: | |
| 670 | dispatch_impl( | ||
| 671 | basic_request& req, | ||
| 672 | basic_response& res) const | ||
| 673 | { | ||
| 674 | // options are recursive and need to be restored on | ||
| 675 | // exception or when returning to a calling router. | ||
| 676 | struct option_saver | ||
| 677 | { | ||
| 678 | 193 | option_saver( | |
| 679 | basic_request& req) noexcept | ||
| 680 | 193 | : req_(&req) | |
| 681 | 193 | , case_sensitive_(req.case_sensitive) | |
| 682 | 193 | , strict_(req.strict) | |
| 683 | { | ||
| 684 | 193 | } | |
| 685 | |||
| 686 | 193 | ~option_saver() | |
| 687 | 179 | { | |
| 688 |
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193 | if(! req_) |
| 689 | 14 | return; | |
| 690 | 179 | req_->case_sensitive = case_sensitive_; | |
| 691 | 179 | req_->strict = strict_; | |
| 692 | 193 | }; | |
| 693 | |||
| 694 | 14 | void cancel() noexcept | |
| 695 | { | ||
| 696 | 14 | req_ = nullptr; | |
| 697 | 14 | } | |
| 698 | |||
| 699 | private: | ||
| 700 | basic_request* req_; | ||
| 701 | bool case_sensitive_; | ||
| 702 | bool strict_; | ||
| 703 | }; | ||
| 704 | |||
| 705 | 193 | option_saver restore_options(req); | |
| 706 | |||
| 707 | // inherit or apply options | ||
| 708 |
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193 | if((impl_->opt & 2) != 0) |
| 709 | 4 | req.case_sensitive = true; | |
| 710 |
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189 | else if((impl_->opt & 4) != 0) |
| 711 | 2 | req.case_sensitive = false; | |
| 712 | |||
| 713 |
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193 | if((impl_->opt & 8) != 0) |
| 714 | ✗ | req.strict = true; | |
| 715 |
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193 | else if((impl_->opt & 16) != 0) |
| 716 | ✗ | req.strict = false; | |
| 717 | |||
| 718 | // nested routers count as 1 call | ||
| 719 | //++res.pos_; | ||
| 720 | |||
| 721 | 193 | match_result mr; | |
| 722 |
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347 | for(auto const& i : impl_->layers) |
| 723 | { | ||
| 724 |
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285 | if(res.resume_ > 0) |
| 725 | { | ||
| 726 | 9 | auto const n = i.count(); // handlers in layer | |
| 727 |
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9 | if(res.pos_ + n < res.resume_) |
| 728 | { | ||
| 729 | 3 | res.pos_ += n; // skip layer | |
| 730 | 3 | continue; | |
| 731 | } | ||
| 732 | // repeat match to recreate the stack | ||
| 733 |
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6 | bool is_match = i.match(req, mr); |
| 734 |
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6 | BOOST_ASSERT(is_match); |
| 735 | (void)is_match; | ||
| 736 | } | ||
| 737 | else | ||
| 738 | { | ||
| 739 |
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276 | if(i.match.end && res.ec_.failed()) |
| 740 | { | ||
| 741 | // routes can't have error handlers | ||
| 742 | 1 | res.pos_ += i.count(); // skip layer | |
| 743 | 1 | continue; | |
| 744 | } | ||
| 745 |
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275 | if(! i.match(req, mr)) |
| 746 | { | ||
| 747 | // not a match | ||
| 748 | 35 | res.pos_ += i.count(); // skip layer | |
| 749 | 35 | continue; | |
| 750 | } | ||
| 751 | } | ||
| 752 | 246 | for(auto it = i.entries.begin(); | |
| 753 |
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426 | it != i.entries.end(); ++it) |
| 754 | { | ||
| 755 | 317 | auto const& e(*it); | |
| 756 |
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317 | if(res.resume_) |
| 757 | { | ||
| 758 | 8 | auto const n = e.handler->count(); | |
| 759 |
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8 | if(res.pos_ + n < res.resume_) |
| 760 | { | ||
| 761 | 2 | res.pos_ += n; // skip entry | |
| 762 | 180 | continue; | |
| 763 | } | ||
| 764 |
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6 | BOOST_ASSERT(e.match_method(req)); |
| 765 | } | ||
| 766 |
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309 | else if(i.match.end) |
| 767 | { | ||
| 768 | // check verb for match | ||
| 769 |
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101 | if(! e.match_method(req)) |
| 770 | { | ||
| 771 | 51 | res.pos_ += e.handler->count(); // skip entry | |
| 772 | 51 | continue; | |
| 773 | } | ||
| 774 | } | ||
| 775 | |||
| 776 | 264 | route_result rv; | |
| 777 | // increment before invoke | ||
| 778 | 264 | ++res.pos_; | |
| 779 |
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264 | if(res.pos_ != res.resume_) |
| 780 | { | ||
| 781 | // call the handler | ||
| 782 |
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260 | rv = e.handler->invoke(req, res); |
| 783 | // res.pos_ can be incremented further | ||
| 784 | // inside the above call to invoke. | ||
| 785 |
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260 | if(rv == route::detach) |
| 786 | { | ||
| 787 | // It is essential that we return immediately, without | ||
| 788 | // doing anything after route::detach is returned, | ||
| 789 | // otherwise we could race with the detached operation | ||
| 790 | // attempting to call resume(). | ||
| 791 | 14 | restore_options.cancel(); | |
| 792 | 127 | return rv; | |
| 793 | } | ||
| 794 | } | ||
| 795 | else | ||
| 796 | { | ||
| 797 | // a subrouter never detaches on its own | ||
| 798 |
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4 | BOOST_ASSERT(e.handler->count() == 1); |
| 799 | // can't detach on resume | ||
| 800 |
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4 | if(res.ec_ == route::detach) |
| 801 | 1 | detail::throw_invalid_argument(); | |
| 802 | // do resume | ||
| 803 | 3 | res.resume_ = 0; | |
| 804 | 3 | rv = res.ec_; | |
| 805 | 3 | res.ec_ = {}; | |
| 806 | } | ||
| 807 |
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387 | if( rv == route::send || |
| 808 |
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387 | rv == route::complete || |
| 809 |
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386 | rv == route::close) |
| 810 | 113 | return rv; | |
| 811 |
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136 | if(rv == route::next) |
| 812 | 98 | continue; // next entry | |
| 813 |
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38 | if(rv == route::next_route) |
| 814 | { | ||
| 815 | // middleware can't return next_route | ||
| 816 |
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2 | if(! i.match.end) |
| 817 | 1 | detail::throw_invalid_argument(); | |
| 818 |
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6 | while(++it != i.entries.end()) |
| 819 | 5 | res.pos_ += it->handler->count(); | |
| 820 | 6 | break; // skip remaining entries | |
| 821 | } | ||
| 822 | // we must handle all route enums | ||
| 823 |
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36 | BOOST_ASSERT(! is_route_result(rv)); |
| 824 |
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36 | if(! rv.failed()) |
| 825 | { | ||
| 826 | // handler must return non-successful error_code | ||
| 827 | 2 | detail::throw_invalid_argument(); | |
| 828 | } | ||
| 829 | // error handling mode | ||
| 830 | 34 | res.ec_ = rv; | |
| 831 |
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34 | if(! i.match.end) |
| 832 | 29 | continue; // next entry | |
| 833 | // routes don't have error handlers | ||
| 834 |
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11 | while(++it != i.entries.end()) |
| 835 | 6 | res.pos_ += it->handler->count(); | |
| 836 | 5 | break; // skip remaining entries | |
| 837 | } | ||
| 838 | |||
| 839 | 115 | mr.restore_path(req); | |
| 840 | } | ||
| 841 | |||
| 842 | 62 | return route::next; | |
| 843 | 193 | } | |
| 844 | |||
| 845 | route_result | ||
| 846 | 177 | any_router:: | |
| 847 | do_dispatch( | ||
| 848 | basic_request& req, | ||
| 849 | basic_response& res) const | ||
| 850 | { | ||
| 851 |
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177 | auto rv = dispatch_impl(req, res); |
| 852 |
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173 | BOOST_ASSERT(is_route_result(rv)); |
| 853 |
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173 | BOOST_ASSERT(rv != route::next_route); |
| 854 |
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173 | if(rv != route::next) |
| 855 | { | ||
| 856 | // when rv == route::detach we must return immediately, | ||
| 857 | // without attempting to perform any additional operations. | ||
| 858 | 119 | return rv; | |
| 859 | } | ||
| 860 |
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54 | if(! res.ec_.failed()) |
| 861 | { | ||
| 862 | // unhandled route | ||
| 863 | 48 | return route::next; | |
| 864 | } | ||
| 865 | // error condition | ||
| 866 | 6 | return res.ec_; | |
| 867 | } | ||
| 868 | |||
| 869 | //} // detail | ||
| 870 | |||
| 871 | } // http_proto | ||
| 872 | } // boost | ||
| 873 |