30 // don't have to worry about invalid scheme characters since we are comparing
31 // against the canonical scheme of the base.
69 bool IsValidScheme(const CHAR* url, const Component& scheme) {  in IsValidScheme()  argument
70   // Caller should ensure that the |scheme| is not empty.  in IsValidScheme()
71   DCHECK_NE(0, scheme.len);  in IsValidScheme()
73   // From https://url.spec.whatwg.org/#scheme-start-state:  in IsValidScheme()
74   //   scheme start state:  in IsValidScheme()
76   //        state to scheme state.  in IsValidScheme()
77   //     2. Otherwise, if state override is not given, set state to no scheme  in IsValidScheme()
80   // Note that both step 2 and step 3 mean that the scheme was not valid.  in IsValidScheme()
81   if (!base::IsAsciiAlpha(url[scheme.begin]))  in IsValidScheme()
84   // From https://url.spec.whatwg.org/#scheme-state:  in IsValidScheme()
85   //   scheme state:  in IsValidScheme()
90   // We begin at |scheme.begin + 1|, because the character at |scheme.begin| has  in IsValidScheme()
92   int scheme_end = scheme.end();  in IsValidScheme()
93   for (int i = scheme.begin + 1; i < scheme_end; i++) {  in IsValidScheme()
118       // Don't allow relative URLs if the base scheme doesn't support it.  in DoIsRelativeURL()
133   // as relative, as this will just replace the path when the base scheme  in DoIsRelativeURL()
143   // See if we've got a scheme, if not, we know this is a relative URL.  in DoIsRelativeURL()
144   // BUT, just because we have a scheme, doesn't make it absolute.  in DoIsRelativeURL()
145   // "http:foo.html" is a relative URL with path "foo.html". If the scheme is  in DoIsRelativeURL()
147   Component scheme;  in DoIsRelativeURL()  local
149       !ExtractScheme(url, url_len, &scheme) || scheme.len == 0;  in DoIsRelativeURL()
155       // Don't allow relative URLs if the base scheme doesn't support it.  in DoIsRelativeURL()
164   // If the scheme isn't valid, then it's relative.  in DoIsRelativeURL()
165   if (!IsValidScheme(url, scheme)) {  in DoIsRelativeURL()
170       // Don't allow relative URLs if the base scheme doesn't support it.  in DoIsRelativeURL()
178   // If base scheme is not standard, or the schemes are different, we can't  in DoIsRelativeURL()
181   // URL Standard: https://url.spec.whatwg.org/#scheme-state  in DoIsRelativeURL()
183   // scheme state:  in DoIsRelativeURL()
184   // > 2.6. Otherwise, if url is special, base is non-null, and base’s scheme is  in DoIsRelativeURL()
185   // >      url’s scheme:  in DoIsRelativeURL()
187        !IsStandard(base, base_parsed.scheme)) ||  in DoIsRelativeURL()
188       !AreSchemesEqual(base, base_parsed.scheme, url, scheme)) {  in DoIsRelativeURL()
192   // When the scheme that they both share is not hierarchical, treat the  in DoIsRelativeURL()
193   // incoming scheme as absolute (this way with the base of "data:foo",  in DoIsRelativeURL()
198   int colon_offset = scheme.end();  in DoIsRelativeURL()
201   // supply a scheme. There's no equivalent to e.g. http:index.html.  in DoIsRelativeURL()
202   if (CompareSchemeComponent(url, scheme, kFileSystemScheme))  in DoIsRelativeURL()
206   // considers to be the scheme. CountConsecutiveSlashes will handle the  in DoIsRelativeURL()
218   // Two or more slashes after the scheme we treat as absolute.  in DoIsRelativeURL()
361     // Fortunately, we can use `base_parsed.scheme.end()` here because we don't  in DoResolveRelativePath()
364     output->Append(base_url, base_parsed.scheme.end());  in DoResolveRelativePath()
482 // should be kept from the original URL is the scheme.
493       GetStandardSchemeType(base_url, base_parsed.scheme, &scheme_type);  in DoResolveRelativeHost()
496   // scheme.  in DoResolveRelativeHost()
497   Parsed relative_parsed;  // Everything but the scheme is valid.  in DoResolveRelativeHost()
519   // Length() does not include the old scheme, so make sure to add it from the  in DoResolveRelativeHost()
547   // not bother to look for a scheme.  in DoResolveAbsoluteFile()
588           ? base_parsed.scheme.is_empty()  in DoResolveRelativeURL()
613   // they are) means that it's UNC. Two backslashes on any base scheme mean  in DoResolveRelativeURL()
617   // We also allow Windows absolute drive specs on any scheme (for example  in DoResolveRelativeURL()
636   // slashes because the generic scheme parsing always extracts a host, but a  in DoResolveRelativeURL()
647   // Any other double-slashes mean that this is relative to the scheme.  in DoResolveRelativeURL()