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fix ipv6 handling between GUI and barriers/barrierc; zero-fill sockaddr_in(6) structs prior to initializing; update --help output

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This commit is contained in:
walker0643
2018-05-12 17:42:55 -04:00
parent f4301a7618
commit 9ab77545ee
6 changed files with 83 additions and 64 deletions
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88
src/lib/net/NetworkAddress.cpp
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@@ -28,6 +28,45 @@
// NetworkAddress
//
static bool parse_address(const std::string& address, std::string& host, int& port)
{
/* Three cases ---
* brackets: parse inside for host, check end for port as :INTEGER. DONE
* one colon: ipv4 address with port. DONE
* otherwise: all host, no port. DONE
*
* very, very little error checking. depends on address being trimmed before call.
*
* does not override port with a default value if no port was found in address.
*/
if (address[0] == '[') {
// bracketed host possibly followed by port as :INTEGER
auto endBracket = address.find(']', 1);
if (endBracket == std::string::npos)
return false;
host = address.substr(1, endBracket - 1);
if (endBracket + 1 < address.length()) {
// port follows (or garbage)
if (address[endBracket + 1] != ':')
return false;
port = std::strtol(&address[endBracket + 2], nullptr, 10);
}
} else {
auto colon = address.find(':');
if (colon != std::string::npos && address.find(':', colon + 1) == std::string::npos) {
// one single colon, must be ipv4 with port
host = address.substr(0, colon);
port = std::strtol(&address[colon + 1], nullptr, 10);
} else {
// no colons (ipv4) or more than one colon (ipv6), both without port
host = address;
}
}
return true;
}
// name re-resolution adapted from a patch by Brent Priddy.
NetworkAddress::NetworkAddress() :
@@ -62,50 +101,9 @@ NetworkAddress::NetworkAddress(const String& hostname, int port) :
m_hostname(hostname),
m_port(port)
{
// check for port suffix
String::size_type i = m_hostname.rfind(':');
if (i != String::npos && i + 1 < m_hostname.size()) {
// found a colon. see if it looks like an IPv6 address.
bool colonNotation = false;
bool dotNotation = false;
bool doubleColon = false;
for (String::size_type j = 0; j < i; ++j) {
if (m_hostname[j] == ':') {
colonNotation = true;
dotNotation = false;
if (m_hostname[j + 1] == ':') {
doubleColon = true;
}
}
else if (m_hostname[j] == '.' && colonNotation) {
dotNotation = true;
}
}
// port suffix is ambiguous with IPv6 notation if there's
// a double colon and the end of the address is not in dot
// notation. in that case we assume it's not a port suffix.
// the user can replace the double colon with zeros to
// disambiguate.
if ((!doubleColon || dotNotation) && !colonNotation) {
// parse port from hostname
char* end;
const char* chostname = m_hostname.c_str();
long suffixPort = strtol(chostname + i + 1, &end, 10);
if (end == chostname + i + 1 || *end != '\0') {
throw XSocketAddress(XSocketAddress::kBadPort,
m_hostname, m_port);
}
// trim port from hostname
m_hostname.erase(i);
// save port
m_port = static_cast<int>(suffixPort);
}
}
// check port number
if (!parse_address(hostname, m_hostname, m_port))
throw XSocketAddress(XSocketAddress::kUnknown,
m_hostname, m_port);
checkPort();
}
@@ -145,7 +143,7 @@ NetworkAddress::resolve()
// if hostname is empty then use wildcard address otherwise look
// up the name.
if (m_hostname.empty()) {
m_address = ARCH->newAnyAddr(IArchNetwork::kINET);
m_address = ARCH->newAnyAddr(IArchNetwork::kINET6);
}
else {
m_address = ARCH->nameToAddr(m_hostname);