Regex::Result Regex::MatchOne(const StringPiece &text) {
if (!impl || !text.len) return Regex::Result();
auto compiled = static_cast<std::regex*>(impl);
std::match_results<const char*> matches;
if (!std::regex_search(text.begin(), text.end(), matches, *compiled) || matches.size() < 2) return Regex::Result();
return Regex::Result(matches[1].first - text.begin(), matches[1].second - text.begin());
}
bool hasPCREPatternMatch(StringPiece pattern, StringPiece target) {
return boost::regex_match(
target.begin(),
target.end(),
boost::regex(pattern.begin(), pattern.end())
);
}
StringPiece LogName::getParent(StringPiece name) {
if (name.empty()) {
return name;
}
ssize_t idx = name.size();
// Skip over any trailing separator characters
while (idx > 0 && isSeparator(name[idx - 1])) {
--idx;
}
// Now walk backwards to the next separator character
while (idx > 0 && !isSeparator(name[idx - 1])) {
--idx;
}
// And again skip over any separator characters, in case there are multiple
// repeated characters.
while (idx > 0 && isSeparator(name[idx - 1])) {
--idx;
}
return StringPiece(name.begin(), idx);
}
TreeFragmentTokenizer::TreeFragmentTokenizer(const StringPiece &s)
: str_(s)
, value_(TreeFragmentToken_EOS, "", -1)
, iter_(s.begin())
, end_(s.end())
, pos_(0) {
++(*this);
}
void Item::resetKey(StringPiece k)
{
assert(k.size() <= 250);
keylen_ = k.size();
receivedBytes_ = 0;
append(k.data(), k.size());
hash_ = boost::hash_range(k.begin(), k.end());
}
Uri::Uri(StringPiece str) : port_(0) {
static const boost::regex uriRegex(
"([a-zA-Z][a-zA-Z0-9+.-]*):" // scheme:
"([^?#]*)" // authority and path
"(?:\\?([^#]*))?" // ?query
"(?:#(.*))?"); // #fragment
static const boost::regex authorityAndPathRegex("//([^/]*)(/.*)?");
boost::cmatch match;
if (UNLIKELY(!boost::regex_match(str.begin(), str.end(), match, uriRegex))) {
throw std::invalid_argument(to<std::string>("invalid URI ", str));
}
scheme_ = submatch(match, 1);
toLower(scheme_);
StringPiece authorityAndPath(match[2].first, match[2].second);
boost::cmatch authorityAndPathMatch;
if (!boost::regex_match(authorityAndPath.begin(),
authorityAndPath.end(),
authorityAndPathMatch,
authorityAndPathRegex)) {
// Does not start with //, doesn't have authority
path_ = authorityAndPath.fbstr();
} else {
static const boost::regex authorityRegex(
"(?:([^@:]*)(?::([^@]*))?@)?" // username, password
"(\\[[^\\]]*\\]|[^\\[:]*)" // host (IP-literal (e.g. '['+IPv6+']',
// dotted-IPv4, or named host)
"(?::(\\d*))?"); // port
auto authority = authorityAndPathMatch[1];
boost::cmatch authorityMatch;
if (!boost::regex_match(authority.first,
authority.second,
authorityMatch,
authorityRegex)) {
throw std::invalid_argument(
to<std::string>("invalid URI authority ",
StringPiece(authority.first, authority.second)));
}
StringPiece port(authorityMatch[4].first, authorityMatch[4].second);
if (!port.empty()) {
port_ = to<uint16_t>(port);
}
username_ = submatch(authorityMatch, 1);
password_ = submatch(authorityMatch, 2);
host_ = submatch(authorityMatch, 3);
path_ = submatch(authorityAndPathMatch, 2);
}
query_ = submatch(match, 3);
fragment_ = submatch(match, 4);
}
Item::Item(StringPiece keyArg,
uint32_t flagsArg,
int exptimeArg,
int valuelen,
uint64_t casArg)
: keylen_(keyArg.size()),
flags_(flagsArg),
rel_exptime_(exptimeArg),
valuelen_(valuelen),
receivedBytes_(0),
cas_(casArg),
hash_(boost::hash_range(keyArg.begin(), keyArg.end())),
data_(static_cast<char*>(::malloc(totalLen())))
{
assert(valuelen_ >= 2);
assert(receivedBytes_ < totalLen());
append(keyArg.data(), keylen_);
}
void MacAddress::parse(StringPiece str) {
// Helper function to convert a single hex char into an integer
auto unhex = [](char c) -> int {
return c >= '0' && c <= '9' ? c - '0' :
c >= 'A' && c <= 'F' ? c - 'A' + 10 :
c >= 'a' && c <= 'f' ? c - 'a' + 10 :
-1;
};
auto isSeparatorChar = [](char c) {
return c == ':' || c == '-';
};
uint8_t parsed[SIZE];
auto p = str.begin();
for (unsigned int byteIndex = 0; byteIndex < SIZE; ++byteIndex) {
if (p == str.end()) {
throw invalid_argument(to<string>("invalid MAC address \"", str,
"\": not enough digits"));
}
// Skip over ':' or '-' separators between bytes
if (byteIndex != 0 && isSeparatorChar(*p)) {
++p;
if (p == str.end()) {
throw invalid_argument(to<string>("invalid MAC address \"", str,
"\": not enough digits"));
}
}
// Parse the upper nibble
int upper = unhex(*p);
if (upper < 0) {
throw invalid_argument(to<string>("invalid MAC address \"", str,
"\": contains non-hex digit"));
}
++p;
// Parse the lower nibble
int lower;
if (p == str.end()) {
lower = upper;
upper = 0;
} else {
lower = unhex(*p);
if (lower < 0) {
// Also accept ':', '-', or '\0', to handle the case where one
// of the bytes was represented by just a single digit.
if (isSeparatorChar(*p)) {
lower = upper;
upper = 0;
} else {
throw invalid_argument(to<string>("invalid MAC address \"", str,
"\": contains non-hex digit"));
}
}
++p;
}
// Update parsed with the newly parsed byte
parsed[byteIndex] = ((upper << 4) | lower);
}
if (p != str.end()) {
// String is too long to be a MAC address
throw invalid_argument(to<string>("invalid MAC address \"", str,
"\": found trailing characters"));
}
// Only update now that we have successfully parsed the entire
// string. This way we remain unchanged on error.
setFromBinary(ByteRange(parsed, SIZE));
}
bool Session::processRequest(StringPiece request)
{
assert(command_.empty());
assert(!noreply_);
assert(policy_ == Item::kInvalid);
assert(!currItem_);
assert(bytesToDiscard_ == 0);
++requestsProcessed_;
// check 'noreply' at end of request line
if (request.size() >= 8)
{
StringPiece end(request.end() - 8, 8);
if (end == " noreply")
{
noreply_ = true;
request.remove_suffix(8);
}
}
SpaceSeparator sep;
Tokenizer tok(request.begin(), request.end(), sep);
Tokenizer::iterator beg = tok.begin();
if (beg == tok.end())
{
reply("ERROR\r\n");
return true;
}
(*beg).CopyToString(&command_);
++beg;
if (command_ == "set" || command_ == "add" || command_ == "replace"
|| command_ == "append" || command_ == "prepend" || command_ == "cas")
{
// this normally returns false
return doUpdate(beg, tok.end());
}
else if (command_ == "get" || command_ == "gets")
{
bool cas = command_ == "gets";
// FIXME: send multiple chunks with write complete callback.
while (beg != tok.end())
{
StringPiece key = *beg;
bool good = key.size() <= kLongestKeySize;
if (!good)
{
reply("CLIENT_ERROR bad command line format\r\n");
return true;
}
needle_->resetKey(key);
ConstItemPtr item = owner_->getItem(needle_);
++beg;
if (item)
{
item->output(&outputBuf_, cas);
}
}
outputBuf_.append("END\r\n");
if (conn_->outputBuffer()->writableBytes() > 65536 + outputBuf_.readableBytes())
{
LOG_DEBUG << "shrink output buffer from " << conn_->outputBuffer()->internalCapacity();
conn_->outputBuffer()->shrink(65536 + outputBuf_.readableBytes());
}
conn_->send(&outputBuf_);
}
else if (command_ == "delete")
{
doDelete(beg, tok.end());
}
else if (command_ == "version")
{
#ifdef HAVE_TCMALLOC
reply("VERSION 0.01 muduo with tcmalloc\r\n");
#else
reply("VERSION 0.01 muduo\r\n");
#endif
}
#ifdef HAVE_TCMALLOC
else if (command_ == "memstat")
{
char buf[1024 * 64];
MallocExtension::instance()->GetStats(buf, sizeof buf);
reply(buf);
}
#endif
else if (command_ == "quit")
{
conn_->shutdown();
}
else if (command_ == "shutdown")
{
// "ERROR: shutdown not enabled"
conn_->shutdown();
owner_->stop();
}
else
{
reply("ERROR\r\n");
LOG_INFO << "Unknown command: " << command_;
}
return true;
}