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Assorted bugfixes to DTSC and Socket libraries.

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This commit is contained in:
Thulinma 2013-02-19 16:06:39 +01:00
parent 603376d15a
commit 1baff448f2
3 changed files with 37 additions and 18 deletions
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5
lib/dtsc.cpp
View file

@ -48,8 +48,10 @@ bool DTSC::Stream::parsePacket(std::string & buffer){
unsigned int i = 0; unsigned int i = 0;
metadata = JSON::fromDTMI((unsigned char*)buffer.c_str() + 8, len, i); metadata = JSON::fromDTMI((unsigned char*)buffer.c_str() + 8, len, i);
buffer.erase(0, len + 8); buffer.erase(0, len + 8);
if (buffer.length() <= 8){
return false; return false;
} }
}
if (memcmp(buffer.c_str(), DTSC::Magic_Packet, 4) == 0){ if (memcmp(buffer.c_str(), DTSC::Magic_Packet, 4) == 0){
len = ntohl(((uint32_t *)buffer.c_str())[1]); len = ntohl(((uint32_t *)buffer.c_str())[1]);
if (buffer.length() < len + 8){ if (buffer.length() < len + 8){
@ -120,8 +122,11 @@ bool DTSC::Stream::parsePacket(Socket::Buffer & buffer){
unsigned int i = 0; unsigned int i = 0;
std::string wholepacket = buffer.remove(len + 8); std::string wholepacket = buffer.remove(len + 8);
metadata = JSON::fromDTMI((unsigned char*)wholepacket.c_str() + 8, len, i); metadata = JSON::fromDTMI((unsigned char*)wholepacket.c_str() + 8, len, i);
if (!buffer.available(8)){
return false; return false;
} }
header_bytes = buffer.copy(8);
}
if (memcmp(header_bytes.c_str(), DTSC::Magic_Packet, 4) == 0){ if (memcmp(header_bytes.c_str(), DTSC::Magic_Packet, 4) == 0){
len = ntohl(((uint32_t *)header_bytes.c_str())[1]); len = ntohl(((uint32_t *)header_bytes.c_str())[1]);
if ( !buffer.available(len + 8)){ if ( !buffer.available(len + 8)){

45
lib/socket.cpp
View file

@ -105,6 +105,7 @@ std::string Socket::Buffer::copy(unsigned int count){
} }
unsigned int i = 0; unsigned int i = 0;
std::string ret; std::string ret;
ret.reserve(count);
for (std::deque<std::string>::reverse_iterator it = data.rbegin(); it != data.rend(); ++it){ for (std::deque<std::string>::reverse_iterator it = data.rbegin(); it != data.rend(); ++it){
if (i + ( *it).size() < count){ if (i + ( *it).size() < count){
ret.append( *it); ret.append( *it);
@ -226,10 +227,9 @@ int Socket::Connection::getSocket(){
} }
/// Returns a string describing the last error that occured. /// Returns a string describing the last error that occured.
/// Simply calls strerror(errno) - not very reliable! /// Only reports errors if an error actually occured - returns the host address or empty string otherwise.
/// \todo Improve getError at some point to be more reliable and only report socket errors.
std::string Socket::Connection::getError(){ std::string Socket::Connection::getError(){
return strerror(errno); return remotehost;
} }
/// Create a new Unix Socket. This socket will (try to) connect to the given address right away. /// Create a new Unix Socket. This socket will (try to) connect to the given address right away.
@ -240,8 +240,9 @@ Socket::Connection::Connection(std::string address, bool nonblock){
pipes[1] = -1; pipes[1] = -1;
sock = socket(PF_UNIX, SOCK_STREAM, 0); sock = socket(PF_UNIX, SOCK_STREAM, 0);
if (sock < 0){ if (sock < 0){
remotehost = strerror(errno);
#if DEBUG >= 1 #if DEBUG >= 1
fprintf(stderr, "Could not create socket! Error: %s\n", strerror(errno)); fprintf(stderr, "Could not create socket! Error: %s\n", remotehost.c_str());
#endif #endif
return; return;
} }
@ -261,8 +262,9 @@ Socket::Connection::Connection(std::string address, bool nonblock){
fcntl(sock, F_SETFL, flags); fcntl(sock, F_SETFL, flags);
} }
}else{ }else{
remotehost = strerror(errno);
#if DEBUG >= 1 #if DEBUG >= 1
fprintf(stderr, "Could not connect to %s! Error: %s\n", address.c_str(), strerror(errno)); fprintf(stderr, "Could not connect to %s! Error: %s\n", address.c_str(), remotehost.c_str());
#endif #endif
close(); close();
} }
@ -301,6 +303,7 @@ Socket::Connection::Connection(std::string host, int port, bool nonblock){
return; return;
} }
remotehost = "";
for (rp = result; rp != NULL; rp = rp->ai_next){ for (rp = result; rp != NULL; rp = rp->ai_next){
sock = socket(rp->ai_family, rp->ai_socktype, rp->ai_protocol); sock = socket(rp->ai_family, rp->ai_socktype, rp->ai_protocol);
if (sock < 0){ if (sock < 0){
@ -309,13 +312,14 @@ Socket::Connection::Connection(std::string host, int port, bool nonblock){
if (connect(sock, rp->ai_addr, rp->ai_addrlen) == 0){ if (connect(sock, rp->ai_addr, rp->ai_addrlen) == 0){
break; break;
} }
remotehost += strerror(errno);
::close(sock); ::close(sock);
} }
freeaddrinfo(result); freeaddrinfo(result);
if (rp == 0){ if (rp == 0){
#if DEBUG >= 1 #if DEBUG >= 1
fprintf(stderr, "Could not connect to %s! Error: %s\n", host.c_str(), strerror(errno)); fprintf(stderr, "Could not connect to %s! Error: %s\n", host.c_str(), remotehost.c_str());
#endif #endif
close(); close();
}else{ }else{
@ -614,7 +618,7 @@ Socket::Server::Server(){
/// \param nonblock (optional) Whether accept() calls will be nonblocking. Default is false (blocking). /// \param nonblock (optional) Whether accept() calls will be nonblocking. Default is false (blocking).
Socket::Server::Server(int port, std::string hostname, bool nonblock){ Socket::Server::Server(int port, std::string hostname, bool nonblock){
if ( !IPv6bind(port, hostname, nonblock) && !IPv4bind(port, hostname, nonblock)){ if ( !IPv6bind(port, hostname, nonblock) && !IPv4bind(port, hostname, nonblock)){
fprintf(stderr, "Could not create socket %s:%i! Error: %s\n", hostname.c_str(), port, strerror(errno)); fprintf(stderr, "Could not create socket %s:%i! Error: %s\n", hostname.c_str(), port, errors.c_str());
sock = -1; sock = -1;
} }
} //Socket::Server TCP Constructor } //Socket::Server TCP Constructor
@ -627,8 +631,9 @@ Socket::Server::Server(int port, std::string hostname, bool nonblock){
bool Socket::Server::IPv6bind(int port, std::string hostname, bool nonblock){ bool Socket::Server::IPv6bind(int port, std::string hostname, bool nonblock){
sock = socket(AF_INET6, SOCK_STREAM, 0); sock = socket(AF_INET6, SOCK_STREAM, 0);
if (sock < 0){ if (sock < 0){
errors = strerror(errno);
#if DEBUG >= 1 #if DEBUG >= 1
fprintf(stderr, "Could not create IPv6 socket %s:%i! Error: %s\n", hostname.c_str(), port, strerror(errno)); fprintf(stderr, "Could not create IPv6 socket %s:%i! Error: %s\n", hostname.c_str(), port, errors.c_str());
#endif #endif
return false; return false;
} }
@ -656,15 +661,17 @@ bool Socket::Server::IPv6bind(int port, std::string hostname, bool nonblock){
#endif #endif
return true; return true;
}else{ }else{
errors = strerror(errno);
#if DEBUG >= 1 #if DEBUG >= 1
fprintf(stderr, "IPv6 Listen failed! Error: %s\n", strerror(errno)); fprintf(stderr, "IPv6 Listen failed! Error: %s\n", errors.c_str());
#endif #endif
close(); close();
return false; return false;
} }
}else{ }else{
errors = strerror(errno);
#if DEBUG >= 1 #if DEBUG >= 1
fprintf(stderr, "IPv6 Binding %s:%i failed (%s)\n", hostname.c_str(), port, strerror(errno)); fprintf(stderr, "IPv6 Binding %s:%i failed (%s)\n", hostname.c_str(), port, errors.c_str());
#endif #endif
close(); close();
return false; return false;
@ -679,8 +686,9 @@ bool Socket::Server::IPv6bind(int port, std::string hostname, bool nonblock){
bool Socket::Server::IPv4bind(int port, std::string hostname, bool nonblock){ bool Socket::Server::IPv4bind(int port, std::string hostname, bool nonblock){
sock = socket(AF_INET, SOCK_STREAM, 0); sock = socket(AF_INET, SOCK_STREAM, 0);
if (sock < 0){ if (sock < 0){
errors = strerror(errno);
#if DEBUG >= 1 #if DEBUG >= 1
fprintf(stderr, "Could not create IPv4 socket %s:%i! Error: %s\n", hostname.c_str(), port, strerror(errno)); fprintf(stderr, "Could not create IPv4 socket %s:%i! Error: %s\n", hostname.c_str(), port, errors.c_str());
#endif #endif
return false; return false;
} }
@ -708,15 +716,17 @@ bool Socket::Server::IPv4bind(int port, std::string hostname, bool nonblock){
#endif #endif
return true; return true;
}else{ }else{
errors = strerror(errno);
#if DEBUG >= 1 #if DEBUG >= 1
fprintf(stderr, "IPv4 Listen failed! Error: %s\n", strerror(errno)); fprintf(stderr, "IPv4 Listen failed! Error: %s\n", errors.c_str());
#endif #endif
close(); close();
return false; return false;
} }
}else{ }else{
errors = strerror(errno);
#if DEBUG >= 1 #if DEBUG >= 1
fprintf(stderr, "IPv4 binding %s:%i failed (%s)\n", hostname.c_str(), port, strerror(errno)); fprintf(stderr, "IPv4 binding %s:%i failed (%s)\n", hostname.c_str(), port, errors.c_str());
#endif #endif
close(); close();
return false; return false;
@ -733,8 +743,9 @@ Socket::Server::Server(std::string address, bool nonblock){
unlink(address.c_str()); unlink(address.c_str());
sock = socket(AF_UNIX, SOCK_STREAM, 0); sock = socket(AF_UNIX, SOCK_STREAM, 0);
if (sock < 0){ if (sock < 0){
errors = strerror(errno);
#if DEBUG >= 1 #if DEBUG >= 1
fprintf(stderr, "Could not create socket! Error: %s\n", strerror(errno)); fprintf(stderr, "Could not create socket! Error: %s\n", errors.c_str());
#endif #endif
return; return;
} }
@ -752,15 +763,17 @@ Socket::Server::Server(std::string address, bool nonblock){
if (ret == 0){ if (ret == 0){
return; return;
}else{ }else{
errors = strerror(errno);
#if DEBUG >= 1 #if DEBUG >= 1
fprintf(stderr, "Listen failed! Error: %s\n", strerror(errno)); fprintf(stderr, "Listen failed! Error: %s\n", errors.c_str());
#endif #endif
close(); close();
return; return;
} }
}else{ }else{
errors = strerror(errno);
#if DEBUG >= 1 #if DEBUG >= 1
fprintf(stderr, "Binding failed! Error: %s\n", strerror(errno)); fprintf(stderr, "Binding failed! Error: %s\n", errors.c_str());
#endif #endif
close(); close();
return; return;

1
lib/socket.h
View file

@ -97,6 +97,7 @@ namespace Socket {
/// This class is for easily setting up listening socket, either TCP or Unix. /// This class is for easily setting up listening socket, either TCP or Unix.
class Server{ class Server{
private: private:
std::string errors; ///< Stores errors that may have occured.
int sock; ///< Internally saved socket number. int sock; ///< Internally saved socket number.
bool IPv6bind(int port, std::string hostname, bool nonblock); ///< Attempt to bind an IPv6 socket bool IPv6bind(int port, std::string hostname, bool nonblock); ///< Attempt to bind an IPv6 socket
bool IPv4bind(int port, std::string hostname, bool nonblock); ///< Attempt to bind an IPv4 socket bool IPv4bind(int port, std::string hostname, bool nonblock); ///< Attempt to bind an IPv4 socket