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#include "url/url_util_qt.h"
#include "base/command_line.h"
#include "base/no_destructor.h"
#include "base/numerics/safe_conversions.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_util.h"
#include "url/gurl.h"
#include "url/url_canon.h"
#include "url/url_util.h"
namespace url {
namespace {
std::string ToString(const CustomScheme& cs)
{
std::string serialized;
serialized += cs.name;
serialized += ':';
switch (cs.type) {
case SCHEME_WITH_HOST_PORT_AND_USER_INFORMATION:
serialized += 'u';
serialized += base::NumberToString(cs.default_port);
break;
case SCHEME_WITH_HOST_AND_PORT:
serialized += 'p';
serialized += base::NumberToString(cs.default_port);
break;
case SCHEME_WITH_HOST:
serialized += 'h';
break;
case SCHEME_WITHOUT_AUTHORITY:
break;
}
if (cs.flags & CustomScheme::Secure)
serialized += 's';
if (cs.flags & CustomScheme::Local)
serialized += 'l';
if (cs.flags & CustomScheme::LocalAccessAllowed)
serialized += 'L';
if (cs.flags & CustomScheme::NoAccessAllowed)
serialized += 'N';
if (cs.flags & CustomScheme::ServiceWorkersAllowed)
serialized += 'W';
if (cs.flags & CustomScheme::ViewSourceAllowed)
serialized += 'V';
if (cs.flags & CustomScheme::ContentSecurityPolicyIgnored)
serialized += 'C';
if (cs.flags & CustomScheme::CorsEnabled)
serialized += 'F';
return serialized;
}
class Parser {
public:
void CharacterArrived(char ch) {
switch (state) {
case NAME: CharacterArrivedWhileParsingName(ch); break;
case OPTIONS: CharacterArrivedWhileParsingOptions(ch); break;
case PORT: CharacterArrivedWhileParsingPort(ch); break;
}
}
void EndReached() {
if (!default_port_string.empty())
FlushPort();
if (!cs.name.empty())
Flush();
}
private:
void CharacterArrivedWhileParsingName(char ch) {
switch (ch) {
case ':': state = OPTIONS; break;
case ';': Flush(); break;
default: cs.name += ch; break;
}
}
void CharacterArrivedWhileParsingOptions(char ch) {
switch (ch) {
case 'u': cs.type = SCHEME_WITH_HOST_PORT_AND_USER_INFORMATION; state = PORT; break;
case 'p': cs.type = SCHEME_WITH_HOST_AND_PORT; state = PORT; break;
case 'h': cs.type = SCHEME_WITH_HOST; break;
case 's': cs.flags |= CustomScheme::Secure; break;
case 'l': cs.flags |= CustomScheme::Local; break;
case 'L': cs.flags |= CustomScheme::LocalAccessAllowed; break;
case 'N': cs.flags |= CustomScheme::NoAccessAllowed; break;
case 'W': cs.flags |= CustomScheme::ServiceWorkersAllowed; break;
case 'V': cs.flags |= CustomScheme::ViewSourceAllowed; break;
case 'C': cs.flags |= CustomScheme::ContentSecurityPolicyIgnored; break;
case 'F': cs.flags |= CustomScheme::CorsEnabled; break;
case ';': Flush(); state = NAME; break;
default: CHECK(false) << "Unexpected character '" << ch << "'.";
}
}
void CharacterArrivedWhileParsingPort(char ch) {
if (base::IsAsciiDigit(ch)) {
default_port_string += ch;
return;
}
FlushPort();
state = OPTIONS;
CharacterArrivedWhileParsingOptions(ch);
}
void FlushPort() {
CHECK(base::StringToInt(default_port_string, &cs.default_port))
<< "Failed to parse '" << default_port_string << "'.";
default_port_string.clear();
}
void Flush() {
CustomScheme::AddScheme(cs);
cs = CustomScheme();
}
enum { NAME, OPTIONS, PORT } state = NAME;
CustomScheme cs;
std::string default_port_string;
};
} // namespace
std::vector<CustomScheme>& CustomScheme::GetMutableSchemes() {
static base::NoDestructor<std::vector<CustomScheme>> schemes;
return *schemes;
}
const std::vector<CustomScheme>& CustomScheme::GetSchemes() {
return GetMutableSchemes();
}
void CustomScheme::ClearSchemes()
{
GetMutableSchemes().clear();
}
void CustomScheme::AddScheme(const CustomScheme& cs)
{
DCHECK(!cs.name.empty());
DCHECK_EQ(cs.has_port_component(), (cs.default_port != PORT_UNSPECIFIED))
<< "Scheme '" << cs.name << "' has invalid configuration.";
DCHECK_EQ(base::ToLowerASCII(cs.name), cs.name)
<< "Scheme '" << cs.name << "' should be lower-case.";
DCHECK(!FindScheme(cs.name))
<< "Scheme '" << cs.name << "' already added.";
GetMutableSchemes().push_back(cs);
}
const CustomScheme* CustomScheme::FindScheme(base::StringPiece name)
{
for (const CustomScheme& cs : GetSchemes())
if (base::LowerCaseEqualsASCII(name, cs.name))
return &cs;
return nullptr;
}
const char CustomScheme::kCommandLineFlag[] = "webengine-schemes";
void CustomScheme::SaveSchemes(base::CommandLine* command_line)
{
std::string serialized;
for (const CustomScheme& cs : GetSchemes()) {
if (!serialized.empty())
serialized += ';';
serialized += ToString(cs);
}
command_line->AppendSwitchASCII(kCommandLineFlag, std::move(serialized));
}
void CustomScheme::LoadSchemes(const base::CommandLine* command_line)
{
std::string serialized = command_line->GetSwitchValueASCII(kCommandLineFlag);
Parser parser;
for (char ch : serialized)
parser.CharacterArrived(ch);
parser.EndReached();
}
} // namespace url
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