GCC Code Coverage Report

Directory: libs/http_proto/include/boost/http_proto/
File: boost/http_proto/rfc/detail/impl/rules.ipp
Date: 2023-12-23 23:40:21
Exec Total Coverage
Lines: 137 150 91.3%
Functions: 6 6 100.0%
Branches: 74 92 80.4%
Line Branch Exec Source
1 //
2 // Copyright (c) 2021 Vinnie Falco (vinnie.falco@gmail.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 #ifndef BOOST_HTTP_PROTO_RFC_DETAIL_IMPL_RULES_IPP
11 #define BOOST_HTTP_PROTO_RFC_DETAIL_IMPL_RULES_IPP
12
13 #include <boost/http_proto/rfc/detail/rules.hpp>
14 #include <boost/url/grammar/digit_chars.hpp>
15
16 namespace boost {
17 namespace http_proto {
18 namespace detail {
19
20 auto
21 4910 crlf_rule_t::
22 parse(
23 char const*& it,
24 char const* end) const noexcept ->
25 system::result<value_type>
26 {
27
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 4910 if(it == end)
28 529 return grammar::error::need_more;
29
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 4381 if(*it != '\r')
30 ✗ return grammar::error::mismatch;
31 4381 ++it;
32
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 4381 if(it == end)
33 219 return grammar::error::need_more;
34
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 4162 if(*it != '\n')
35 ✗ return grammar::error::mismatch;
36 4162 ++it;
37 4162 return {};
38 }
39
40 //------------------------------------------------
41
42 auto
43 2902 version_rule_t::
44 parse(
45 char const*& it,
46 char const* end) const noexcept ->
47 system::result<value_type>
48 {
49 2902 value_type v = 0;
50
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 2902 if(it == end)
51 {
52 // expected "HTTP/"
53 135 BOOST_HTTP_PROTO_RETURN_EC(
54 grammar::error::need_more);
55 }
56
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 2767 if(end - it >= 5)
57 {
58
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 2344 if(std::memcmp(
59 it, "HTTP/", 5) != 0)
60 {
61 ✗ BOOST_HTTP_PROTO_RETURN_EC(
62 grammar::error::mismatch);
63 }
64 2344 it += 5;
65 }
66
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 2767 if(it == end)
67 {
68 // expected DIGIT
69 72 BOOST_HTTP_PROTO_RETURN_EC(
70 grammar::error::need_more);
71 }
72
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 2695 if(! grammar::digit_chars(*it))
73 {
74 // expected DIGIT
75 423 BOOST_HTTP_PROTO_RETURN_EC(
76 grammar::error::need_more);
77 }
78 2272 v = 10 * (*it++ - '0');
79
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 2272 if(it == end)
80 {
81 // expected "."
82 180 BOOST_HTTP_PROTO_RETURN_EC(
83 grammar::error::need_more);
84 }
85
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 2092 if(*it != '.')
86 {
87 // expected "."
88 ✗ BOOST_HTTP_PROTO_RETURN_EC(
89 grammar::error::need_more);
90 }
91 2092 ++it;
92
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 2092 if(it == end)
93 {
94 // expected DIGIT
95 71 BOOST_HTTP_PROTO_RETURN_EC(
96 grammar::error::need_more);
97 }
98
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 2021 if(! grammar::digit_chars(*it))
99 {
100 // expected DIGIT
101 ✗ BOOST_HTTP_PROTO_RETURN_EC(
102 grammar::error::need_more);
103 }
104 2021 v += *it++ - '0';
105 2021 return v;
106 }
107
108 //------------------------------------------------
109
110 auto
111 499 status_code_rule_t::
112 parse(
113 char const*& it,
114 char const* end) const noexcept ->
115 system::result<value_type>
116 {
117 auto const dig =
118 1446 [](char c) -> int
119 {
120 1446 unsigned char uc(c - '0');
121
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 1446 if(uc > 9)
122 ✗ return -1;
123 1446 return uc;
124 };
125
126
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 499 if(it == end)
127 {
128 // end
129 9 BOOST_HTTP_PROTO_RETURN_EC(
130 grammar::error::need_more);
131 }
132 490 auto it0 = it;
133 490 int v = dig(*it);
134
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 490 if(v == -1)
135 {
136 // expected DIGIT
137 ✗ BOOST_HTTP_PROTO_RETURN_EC(
138 grammar::error::mismatch);
139 }
140 490 value_type t;
141 490 t.v = 100 * v;
142 490 ++it;
143
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 490 if(it == end)
144 {
145 // end
146 8 BOOST_HTTP_PROTO_RETURN_EC(
147 grammar::error::need_more);
148 }
149 482 v = dig(*it);
150
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 482 if(v == -1)
151 {
152 // expected DIGIT
153 ✗ BOOST_HTTP_PROTO_RETURN_EC(
154 grammar::error::mismatch);
155 }
156 482 t.v = t.v + (10 * v);
157 482 ++it;
158
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 482 if(it == end)
159 {
160 // end
161 8 BOOST_HTTP_PROTO_RETURN_EC(
162 grammar::error::need_more);
163 }
164 474 v = dig(*it);
165
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 474 if(v == -1)
166 {
167 // expected DIGIT
168 ✗ BOOST_HTTP_PROTO_RETURN_EC(
169 grammar::error::need_more);
170 }
171 474 t.v = t.v + v;
172 474 ++it;
173
174 474 t.s = core::string_view(it0, it - it0);
175 474 t.st = int_to_status(t.v);
176 474 return t;
177 }
178
179 //------------------------------------------------
180
181 auto
182 5825 field_rule_t::
183 parse(
184 char const*& it,
185 char const* end) const noexcept ->
186 system::result<value_type>
187 {
188
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 5825 if(it == end)
189 {
190 152 BOOST_HTTP_PROTO_RETURN_EC(
191 grammar::error::need_more);
192 }
193 // check for leading CRLF
194
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 5673 if(it[0] == '\r')
195 {
196 1892 ++it;
197
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 1892 if(it == end)
198 {
199 112 BOOST_HTTP_PROTO_RETURN_EC(
200 grammar::error::need_more);
201 }
202
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 1780 if(*it != '\n')
203 {
204 ✗ BOOST_HTTP_PROTO_RETURN_EC(
205 grammar::error::mismatch);
206 }
207 // end of fields
208 1780 ++it;
209 1780 BOOST_HTTP_PROTO_RETURN_EC(
210 grammar::error::end_of_range);
211 }
212
213 3781 value_type v;
214
215 // field name
216 {
217 auto rv = grammar::parse(
218 3781 it, end, grammar::tuple_rule(
219 token_rule,
220 3781 grammar::squelch(
221 3781 grammar::delim_rule(':'))));
222
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 3781 if(! rv)
223 397 return rv.error();
224 3384 v.name = rv.value();
225 }
226
227 // consume all obs-fold until
228 // field char or end of field
229 for(;;)
230 {
231 3678 skip_ows(it, end);
232
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 3678 if(it == end)
233 {
234 227 BOOST_HTTP_PROTO_RETURN_EC(
235 grammar::error::need_more);
236 }
237
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 3451 if(*it != '\r')
238 {
239 // start of value
240 2897 break;
241 }
242 554 ++it;
243
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 554 if(it == end)
244 {
245 60 BOOST_HTTP_PROTO_RETURN_EC(
246 grammar::error::need_more);
247 }
248
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 494 if(*it != '\n')
249 {
250 ✗ BOOST_HTTP_PROTO_RETURN_EC(
251 grammar::error::mismatch);
252 }
253 494 ++it;
254
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 494 if(it == end)
255 {
256 56 BOOST_HTTP_PROTO_RETURN_EC(
257 grammar::error::need_more);
258 }
259
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 438 if(*it == '\r')
260 {
261 // empty value
262 144 return v;
263 }
264
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 294 if( *it != ' ' &&
265 ✗ *it != '\t')
266 {
267 // start of value
268 ✗ break;
269 }
270 // eat obs-fold
271 294 ++it;
272 294 v.has_obs_fold = true;
273 294 }
274
275 2897 char const* s0 = it; // start of value
276 for(;;)
277 {
278 auto rv = grammar::parse(
279 2939 it, end, grammar::tuple_rule(
280 2939 grammar::token_rule(
281 2939 ws_vchars),
282 2939 crlf_rule));
283
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 2939 if(! rv)
284 488 return rv.error();
285
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 2451 if(it == end)
286 {
287 71 BOOST_HTTP_PROTO_RETURN_EC(
288 grammar::error::need_more);
289 }
290
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 2380 if( *it != ' ' &&
291
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 2338 *it != '\t')
292 {
293 // end of field
294 2338 break;
295 }
296 // *it will match field_value_rule
297 42 v.has_obs_fold = true;
298 42 }
299
300 2338 v.value = core::string_view(s0, (it - s0) - 2);
301
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 2338 BOOST_ASSERT(! v.value.empty());
302 //BOOST_ASSERT(! ws(t.v.value.front()));
303
304 // remove trailing SP,HTAB,CR,LF
305 2338 auto p = &v.value.back();
306 for(;;)
307 {
308
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 2543 switch(*p)
309 {
310 205 case ' ': case '\t':
311 case '\r': case '\n':
312 205 --p;
313 205 continue;
314 2338 default:
315 2338 ++p;
316 2338 goto done;
317 }
318 }
319 2338 done:
320 2338 v.value = core::string_view(
321 v.value.data(),
322 2338 p - v.value.data());
323 2338 return v;
324 }
325
326 //------------------------------------------------
327
328 void
329 946 remove_obs_fold(
330 char* it,
331 char const* const end) noexcept
332 {
333
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 946 while(it != end)
334 {
335
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 941 if(*it != '\r')
336 {
337 593 ++it;
338 593 continue;
339 }
340
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 348 if(end - it < 3)
341 145 break;
342
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 203 BOOST_ASSERT(it[1] == '\n');
343
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 406 if( it[1] == '\n' &&
344 203 ws(it[2]))
345 {
346 200 it[0] = ' ';
347 200 it[1] = ' ';
348 200 it += 3;
349 }
350 else
351 {
352 3 ++it;
353 }
354 }
355 150 }
356
357 } // detail
358 } // http_proto
359 } // boost
360
361 #endif
362