GCC Code Coverage Report

Directory: libs/http_proto/include/boost/http_proto/
File: boost/http_proto/rfc/detail/impl/rules.ipp
Date: 2023-01-09 16:11:13
Exec Total Coverage
Lines: 134 150 89.3%
Functions: 6 6 100.0%
Branches: 71 92 77.2%
Line Branch Exec Source
1 //
2 // Copyright (c) 2021 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 #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 2122 crlf_rule_t::
22 parse(
23 char const*& it,
24 char const* end) const noexcept ->
25 result<value_type>
26 {
27
2/2
✓ Branch 0 taken 439 times.
✓ Branch 1 taken 1683 times.
 2122 if(it == end)
28 439 return grammar::error::need_more;
29
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 1683 times.
 1683 if(*it != '\r')
30 ✗ return grammar::error::mismatch;
31 1683 ++it;
32
2/2
✓ Branch 0 taken 182 times.
✓ Branch 1 taken 1501 times.
 1683 if(it == end)
33 182 return grammar::error::need_more;
34
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 1501 times.
 1501 if(*it != '\n')
35 ✗ return grammar::error::mismatch;
36 1501 ++it;
37 1501 return {};
38 }
39
40 //------------------------------------------------
41
42 auto
43 1898 version_rule_t::
44 parse(
45 char const*& it,
46 char const* end) const noexcept ->
47 result<value_type>
48 {
49 1898 value_type v = 0;
50
2/2
✓ Branch 0 taken 108 times.
✓ Branch 1 taken 1790 times.
 1898 if(it == end)
51 {
52 // expected "HTTP/"
53 108 BOOST_HTTP_PROTO_RETURN_EC(
54 grammar::error::need_more);
55 }
56
2/2
✓ Branch 0 taken 1439 times.
✓ Branch 1 taken 351 times.
 1790 if(end - it >= 5)
57 {
58
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 1439 times.
 1439 if(std::memcmp(
59 it, "HTTP/", 5) != 0)
60 {
61 ✗ BOOST_HTTP_PROTO_RETURN_EC(
62 grammar::error::mismatch);
63 }
64 1439 it += 5;
65 }
66
2/2
✓ Branch 0 taken 54 times.
✓ Branch 1 taken 1736 times.
 1790 if(it == end)
67 {
68 // expected DIGIT
69 54 BOOST_HTTP_PROTO_RETURN_EC(
70 grammar::error::need_more);
71 }
72
2/2
✓ Branch 1 taken 351 times.
✓ Branch 2 taken 1385 times.
 1736 if(! grammar::digit_chars(*it))
73 {
74 // expected DIGIT
75 351 BOOST_HTTP_PROTO_RETURN_EC(
76 grammar::error::need_more);
77 }
78 1385 v = 10 * (*it++ - '0');
79
2/2
✓ Branch 0 taken 162 times.
✓ Branch 1 taken 1223 times.
 1385 if(it == end)
80 {
81 // expected "."
82 162 BOOST_HTTP_PROTO_RETURN_EC(
83 grammar::error::need_more);
84 }
85
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 1223 times.
 1223 if(*it != '.')
86 {
87 // expected "."
88 ✗ BOOST_HTTP_PROTO_RETURN_EC(
89 grammar::error::need_more);
90 }
91 1223 ++it;
92
2/2
✓ Branch 0 taken 54 times.
✓ Branch 1 taken 1169 times.
 1223 if(it == end)
93 {
94 // expected DIGIT
95 54 BOOST_HTTP_PROTO_RETURN_EC(
96 grammar::error::need_more);
97 }
98
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 1169 times.
 1169 if(! grammar::digit_chars(*it))
99 {
100 // expected DIGIT
101 ✗ BOOST_HTTP_PROTO_RETURN_EC(
102 grammar::error::need_more);
103 }
104 1169 v += *it++ - '0';
105 1169 return v;
106 }
107
108 //------------------------------------------------
109
110 auto
111 66 status_code_rule_t::
112 parse(
113 char const*& it,
114 char const* end) const noexcept ->
115 result<value_type>
116 {
117 auto const dig =
118 198 [](char c) -> int
119 {
120 198 unsigned char uc(c - '0');
121
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 198 times.
 198 if(uc > 9)
122 ✗ return -1;
123 198 return uc;
124 };
125
126
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 66 times.
 66 if(it == end)
127 {
128 // end
129 ✗ BOOST_HTTP_PROTO_RETURN_EC(
130 grammar::error::need_more);
131 }
132 66 auto it0 = it;
133 66 int v = dig(*it);
134
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 66 times.
 66 if(v == -1)
135 {
136 // expected DIGIT
137 ✗ BOOST_HTTP_PROTO_RETURN_EC(
138 grammar::error::mismatch);
139 }
140 66 value_type t;
141 66 t.v = 100 * v;
142 66 ++it;
143
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 66 times.
 66 if(it == end)
144 {
145 // end
146 ✗ BOOST_HTTP_PROTO_RETURN_EC(
147 grammar::error::need_more);
148 }
149 66 v = dig(*it);
150
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 66 times.
 66 if(v == -1)
151 {
152 // expected DIGIT
153 ✗ BOOST_HTTP_PROTO_RETURN_EC(
154 grammar::error::mismatch);
155 }
156 66 t.v = t.v + (10 * v);
157 66 ++it;
158
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 66 times.
 66 if(it == end)
159 {
160 // end
161 ✗ BOOST_HTTP_PROTO_RETURN_EC(
162 grammar::error::need_more);
163 }
164 66 v = dig(*it);
165
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 66 times.
 66 if(v == -1)
166 {
167 // expected DIGIT
168 ✗ BOOST_HTTP_PROTO_RETURN_EC(
169 grammar::error::need_more);
170 }
171 66 t.v = t.v + v;
172 66 ++it;
173
174 66 t.s = string_view(it0, it - it0);
175 66 t.st = int_to_status(t.v);
176 66 return t;
177 }
178
179 //------------------------------------------------
180
181 auto
182 2351 field_rule_t::
183 parse(
184 char const*& it,
185 char const* end) const noexcept ->
186 result<value_type>
187 {
188
2/2
✓ Branch 0 taken 135 times.
✓ Branch 1 taken 2216 times.
 2351 if(it == end)
189 {
190 135 BOOST_HTTP_PROTO_RETURN_EC(
191 grammar::error::need_more);
192 }
193 // check for leading CRLF
194
2/2
✓ Branch 0 taken 674 times.
✓ Branch 1 taken 1542 times.
 2216 if(it[0] == '\r')
195 {
196 674 ++it;
197
2/2
✓ Branch 0 taken 95 times.
✓ Branch 1 taken 579 times.
 674 if(it == end)
198 {
199 95 BOOST_HTTP_PROTO_RETURN_EC(
200 grammar::error::need_more);
201 }
202
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 579 times.
 579 if(*it != '\n')
203 {
204 ✗ BOOST_HTTP_PROTO_RETURN_EC(
205 grammar::error::mismatch);
206 }
207 // end of fields
208 579 ++it;
209 579 BOOST_HTTP_PROTO_RETURN_EC(
210 grammar::error::end_of_range);
211 }
212
213 1542 value_type v;
214
215 // field name
216 {
217 auto rv = grammar::parse(
218 1542 it, end, grammar::tuple_rule(
219 token_rule,
220 1542 grammar::squelch(
221 1542 grammar::delim_rule(':'))));
222
2/2
✓ Branch 1 taken 188 times.
✓ Branch 2 taken 1354 times.
 1542 if(! rv)
223 188 return rv.error();
224 1354 v.name = rv.value();
225 }
226
227 // consume all obs-fold until
228 // field char or end of field
229 for(;;)
230 {
231 1648 skip_ows(it, end);
232
2/2
✓ Branch 0 taken 186 times.
✓ Branch 1 taken 1462 times.
 1648 if(it == end)
233 {
234 186 BOOST_HTTP_PROTO_RETURN_EC(
235 grammar::error::need_more);
236 }
237
2/2
✓ Branch 0 taken 911 times.
✓ Branch 1 taken 551 times.
 1462 if(*it != '\r')
238 {
239 // start of value
240 911 break;
241 }
242 551 ++it;
243
2/2
✓ Branch 0 taken 60 times.
✓ Branch 1 taken 491 times.
 551 if(it == end)
244 {
245 60 BOOST_HTTP_PROTO_RETURN_EC(
246 grammar::error::need_more);
247 }
248
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 491 times.
 491 if(*it != '\n')
249 {
250 ✗ BOOST_HTTP_PROTO_RETURN_EC(
251 grammar::error::mismatch);
252 }
253 491 ++it;
254
2/2
✓ Branch 0 taken 56 times.
✓ Branch 1 taken 435 times.
 491 if(it == end)
255 {
256 56 BOOST_HTTP_PROTO_RETURN_EC(
257 grammar::error::need_more);
258 }
259
2/2
✓ Branch 0 taken 141 times.
✓ Branch 1 taken 294 times.
 435 if(*it == '\r')
260 {
261 // empty value
262 141 return v;
263 }
264
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 294 times.
 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
275 911 char const* s0 = it; // start of value
276 for(;;)
277 {
278 auto rv = grammar::parse(
279 953 it, end, grammar::tuple_rule(
280 953 grammar::token_rule(
281 953 ws_vchars),
282 953 crlf_rule));
283
2/2
✓ Branch 1 taken 405 times.
✓ Branch 2 taken 548 times.
 953 if(! rv)
284 405 return rv.error();
285
2/2
✓ Branch 0 taken 50 times.
✓ Branch 1 taken 498 times.
 548 if(it == end)
286 {
287 50 BOOST_HTTP_PROTO_RETURN_EC(
288 grammar::error::need_more);
289 }
290
2/2
✓ Branch 0 taken 456 times.
✓ Branch 1 taken 42 times.
 498 if( *it != ' ' &&
291
1/2
✓ Branch 0 taken 456 times.
✗ Branch 1 not taken.
 456 *it != '\t')
292 {
293 // end of field
294 456 break;
295 }
296 // *it will match field_value_rule
297 42 v.has_obs_fold = true;
298 42 }
299
300 456 v.value = string_view(s0, (it - s0) - 2);
301
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 456 times.
 456 BOOST_ASSERT(! v.value.empty());
302 //BOOST_ASSERT(! ws(t.v.value.front()));
303
304 // remove trailing SP,HTAB,CR,LF
305 456 auto p = &v.value.back();
306 for(;;)
307 {
308
2/2
✓ Branch 0 taken 205 times.
✓ Branch 1 taken 456 times.
 661 switch(*p)
309 {
310 205 case ' ': case '\t':
311 case '\r': case '\n':
312 205 --p;
313 205 continue;
314 456 default:
315 456 ++p;
316 456 goto done;
317 }
318 }
319 456 done:
320 456 v.value = string_view(
321 v.value.data(),
322 456 p - v.value.data());
323 456 return v;
324 }
325
326 //------------------------------------------------
327
328 void
329 946 remove_obs_fold(
330 char* it,
331 char const* const end) noexcept
332 {
333
2/2
✓ Branch 0 taken 941 times.
✓ Branch 1 taken 5 times.
 946 while(it != end)
334 {
335
2/2
✓ Branch 0 taken 593 times.
✓ Branch 1 taken 348 times.
 941 if(*it != '\r')
336 {
337 593 ++it;
338 593 continue;
339 }
340
2/2
✓ Branch 0 taken 145 times.
✓ Branch 1 taken 203 times.
 348 if(end - it < 3)
341 145 break;
342
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 203 times.
 203 BOOST_ASSERT(it[1] == '\n');
343
5/6
✓ Branch 0 taken 203 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 200 times.
✓ Branch 3 taken 3 times.
✓ Branch 4 taken 200 times.
✓ Branch 5 taken 3 times.
 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