X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=src%2Fsocket.cpp;h=a599631a40e02f6c506cdd4a49ac1ec1f1505688;hb=ce168051e23bf7a33410ad17a4b78f5da478dbbe;hp=3e9db5fd430fcdf42eea20aaa08e3d0fed48438e;hpb=d0d36795e807cf72295c6e73813e0c2daa0a71e7;p=user%2Fhenk%2Fcode%2Finspircd.git diff --git a/src/socket.cpp b/src/socket.cpp index 3e9db5fd4..a599631a4 100644 --- a/src/socket.cpp +++ b/src/socket.cpp @@ -2,7 +2,7 @@ * | Inspire Internet Relay Chat Daemon | * +------------------------------------+ * - * InspIRCd: (C) 2002-2007 InspIRCd Development Team + * InspIRCd: (C) 2002-2008 InspIRCd Development Team * See: http://www.inspircd.org/wiki/index.php/Credits * * This program is free but copyrighted software; see @@ -11,34 +11,21 @@ * --------------------------------------------------- */ +/* $Core: libIRCDsocket */ + #include "inspircd.h" -#include -#include "configreader.h" #include "socket.h" #include "socketengine.h" -#include "wildcard.h" - -using namespace irc::sockets; - -/* Used when comparing CIDR masks for the modulus bits left over. - * A lot of ircd's seem to do this: - * ((-1) << (8 - (mask % 8))) - * But imho, it sucks in comparison to a nice neat lookup table. - */ -const unsigned char inverted_bits[8] = { 0x00, /* 00000000 - 0 bits - never actually used */ - 0x80, /* 10000000 - 1 bits */ - 0xC0, /* 11000000 - 2 bits */ - 0xE0, /* 11100000 - 3 bits */ - 0xF0, /* 11110000 - 4 bits */ - 0xF8, /* 11111000 - 5 bits */ - 0xFC, /* 11111100 - 6 bits */ - 0xFE /* 11111110 - 7 bits */ -}; +/* Private static member data must be initialized in this manner */ +unsigned int ListenSocket::socketcount = 0; +sockaddr* ListenSocket::sock_us = NULL; +sockaddr* ListenSocket::client = NULL; +sockaddr* ListenSocket::raddr = NULL; ListenSocket::ListenSocket(InspIRCd* Instance, int port, char* addr) : ServerInstance(Instance), desc("plaintext"), bind_addr(addr), bind_port(port) { - this->SetFd(OpenTCPSocket(addr)); + this->SetFd(irc::sockets::OpenTCPSocket(addr)); if (this->GetFd() > -1) { if (!Instance->BindSocket(this->fd,port,addr)) @@ -51,6 +38,16 @@ ListenSocket::ListenSocket(InspIRCd* Instance, int port, char* addr) : ServerIns this->family = AF_INET; Instance->SE->AddFd(this); } + /* Saves needless allocations */ + if (socketcount == 0) + { + /* All instances of ListenSocket share these, so reference count it */ + ServerInstance->Logs->Log("SOCKET", DEBUG,"Allocate sockaddr structures"); + sock_us = new sockaddr[2]; + client = new sockaddr[2]; + raddr = new sockaddr[2]; + } + socketcount++; } ListenSocket::~ListenSocket() @@ -58,258 +55,110 @@ ListenSocket::~ListenSocket() if (this->GetFd() > -1) { ServerInstance->SE->DelFd(this); - ServerInstance->Log(DEBUG,"Shut down listener on fd %d", this->fd); + ServerInstance->Logs->Log("SOCKET", DEBUG,"Shut down listener on fd %d", this->fd); if (ServerInstance->SE->Shutdown(this, 2) || ServerInstance->SE->Close(this)) - ServerInstance->Log(DEBUG,"Failed to cancel listener: %s", strerror(errno)); + ServerInstance->Logs->Log("SOCKET", DEBUG,"Failed to cancel listener: %s", strerror(errno)); this->fd = -1; } -} - -void ListenSocket::HandleEvent(EventType et, int errornum) -{ - sockaddr* sock_us = new sockaddr[2]; // our port number - sockaddr* client = new sockaddr[2]; - socklen_t uslen, length; // length of our port number - int incomingSockfd, in_port; - -#ifdef IPV6 - if (this->family == AF_INET6) - { - uslen = sizeof(sockaddr_in6); - length = sizeof(sockaddr_in6); - } - else -#endif + socketcount--; + if (socketcount == 0) { - uslen = sizeof(sockaddr_in); - length = sizeof(sockaddr_in); + delete[] sock_us; + delete[] client; + delete[] raddr; } +} - incomingSockfd = ServerInstance->SE->Accept(this, (sockaddr*)client, &length); - - if ((incomingSockfd > -1) && (!ServerInstance->SE->GetSockName(this, sock_us, &uslen))) +void ListenSocket::HandleEvent(EventType e, int err) +{ + switch (e) { - char buf[MAXBUF]; -#ifdef IPV6 - if (this->family == AF_INET6) - { - inet_ntop(AF_INET6, &((const sockaddr_in6*)client)->sin6_addr, buf, sizeof(buf)); - in_port = ntohs(((sockaddr_in6*)sock_us)->sin6_port); - } - else -#endif + case EVENT_ERROR: + ServerInstance->Logs->Log("SOCKET",DEFAULT,"ListenSocket::HandleEvent() received a socket engine error event! well shit! '%s'", strerror(err)); + break; + case EVENT_WRITE: + ServerInstance->Logs->Log("SOCKET",DEBUG,"*** BUG *** ListenSocket::HandleEvent() got a WRITE event!!!"); + break; + case EVENT_READ: { - inet_ntop(AF_INET, &((const sockaddr_in*)client)->sin_addr, buf, sizeof(buf)); - in_port = ntohs(((sockaddr_in*)sock_us)->sin_port); - } - - ServerInstance->SE->NonBlocking(incomingSockfd); + ServerInstance->Logs->Log("SOCKET",DEBUG,"HandleEvent for Listensoket"); + socklen_t uslen, length; // length of our port number + int incomingSockfd, in_port; - if (ServerInstance->Config->GetIOHook(in_port)) - { - try +#ifdef IPV6 + if (this->family == AF_INET6) { - ServerInstance->Config->GetIOHook(in_port)->OnRawSocketAccept(incomingSockfd, buf, in_port); + uslen = sizeof(sockaddr_in6); + length = sizeof(sockaddr_in6); } - catch (CoreException& modexcept) + else +#endif { - ServerInstance->Log(DEBUG,"%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason()); + uslen = sizeof(sockaddr_in); + length = sizeof(sockaddr_in); } - } - ServerInstance->stats->statsAccept++; - userrec::AddClient(ServerInstance, incomingSockfd, in_port, false, this->family, client); - } - else - { - ServerInstance->SE->Shutdown(incomingSockfd, 2); - close(incomingSockfd); - ServerInstance->stats->statsRefused++; - } - delete[] client; - delete[] sock_us; -} - -/* Match raw bytes using CIDR bit matching, used by higher level MatchCIDR() */ -bool irc::sockets::MatchCIDRBits(unsigned char* address, unsigned char* mask, unsigned int mask_bits) -{ - unsigned int divisor = mask_bits / 8; /* Number of whole bytes in the mask */ - unsigned int modulus = mask_bits % 8; /* Remaining bits in the mask after whole bytes are dealt with */ - - /* First (this is faster) compare the odd bits with logic ops */ - if (modulus) - if ((address[divisor] & inverted_bits[modulus]) != (mask[divisor] & inverted_bits[modulus])) - /* If they dont match, return false */ - return false; - - /* Secondly (this is slower) compare the whole bytes */ - if (memcmp(address, mask, divisor)) - return false; - - /* The address matches the mask, to mask_bits bits of mask */ - return true; -} - -/* Match CIDR, but dont attempt to match() against leading *!*@ sections */ -bool irc::sockets::MatchCIDR(const char* address, const char* cidr_mask) -{ - return MatchCIDR(address, cidr_mask, false); -} - -/* Match CIDR strings, e.g. 127.0.0.1 to 127.0.0.0/8 or 3ffe:1:5:6::8 to 3ffe:1::0/32 - * If you have a lot of hosts to match, youre probably better off building your mask once - * and then using the lower level MatchCIDRBits directly. - * - * This will also attempt to match any leading usernames or nicknames on the mask, using - * match(), when match_with_username is true. - */ -bool irc::sockets::MatchCIDR(const char* address, const char* cidr_mask, bool match_with_username) -{ - unsigned char addr_raw[16]; - unsigned char mask_raw[16]; - unsigned int bits = 0; - char* mask = NULL; - - /* The caller is trying to match ident@/bits. - * Chop off the ident@ portion, use match() on it - * seperately. - */ - if (match_with_username) - { - /* Duplicate the strings, and try to find the position - * of the @ symbol in each */ - char* address_dupe = strdup(address); - char* cidr_dupe = strdup(cidr_mask); - - /* Use strchr not strrchr, because its going to be nearer to the left */ - char* username_mask_pos = strrchr(cidr_dupe, '@'); - char* username_addr_pos = strrchr(address_dupe, '@'); - - /* Both strings have an @ symbol in them */ - if (username_mask_pos && username_addr_pos) - { - /* Zero out the location of the @ symbol */ - *username_mask_pos = *username_addr_pos = 0; - - /* Try and match() the strings before the @ - * symbols, and recursively call MatchCIDR without - * username matching enabled to match the host part. - */ - bool result = (match(address_dupe, cidr_dupe) && MatchCIDR(username_addr_pos + 1, username_mask_pos + 1, false)); - /* Free the stuff we created */ - free(address_dupe); - free(cidr_dupe); + incomingSockfd = ServerInstance->SE->Accept(this, (sockaddr*)client, &length); - /* Return a result */ - return result; - } - else - { - /* One or both didnt have an @ in, - * just match as CIDR - */ - free(address_dupe); - free(cidr_dupe); - mask = strdup(cidr_mask); - } - } - else - { - /* Make a copy of the cidr mask string, - * we're going to change it - */ - mask = strdup(cidr_mask); - } - - in_addr address_in4; - in_addr mask_in4; - - - /* Use strrchr for this, its nearer to the right */ - char* bits_chars = strrchr(mask,'/'); - - if (bits_chars) - { - bits = atoi(bits_chars + 1); - *bits_chars = 0; - } - else - { - /* No 'number of bits' field! */ - free(mask); - return false; - } - -#ifdef SUPPORT_IP6LINKS - in6_addr address_in6; - in6_addr mask_in6; + if ((incomingSockfd > -1) && (!ServerInstance->SE->GetSockName(this, sock_us, &uslen))) + { + char buf[MAXBUF]; + char target[MAXBUF]; - if (inet_pton(AF_INET6, address, &address_in6) > 0) - { - if (inet_pton(AF_INET6, mask, &mask_in6) > 0) - { - memcpy(&addr_raw, &address_in6.s6_addr, 16); - memcpy(&mask_raw, &mask_in6.s6_addr, 16); + *target = *buf = '\0'; - if (bits > 128) - bits = 128; - } - else - { - /* The address was valid ipv6, but the mask - * that goes with it wasnt. - */ - free(mask); - return false; - } - } - else +#ifdef IPV6 + if (this->family == AF_INET6) + { + in_port = ntohs(((sockaddr_in6*)sock_us)->sin6_port); + inet_ntop(AF_INET6, &((const sockaddr_in6*)client)->sin6_addr, buf, sizeof(buf)); + socklen_t raddrsz = sizeof(sockaddr_in6); + if (getpeername(incomingSockfd, (sockaddr*) raddr, &raddrsz) == 0) + inet_ntop(AF_INET6, &((const sockaddr_in6*)raddr)->sin6_addr, target, sizeof(target)); + else + ServerInstance->Logs->Log("SOCKET", DEBUG, "Can't get peername: %s", strerror(errno)); + } + else #endif - if (inet_pton(AF_INET, address, &address_in4) > 0) - { - if (inet_pton(AF_INET, mask, &mask_in4) > 0) - { - memcpy(&addr_raw, &address_in4.s_addr, 4); - memcpy(&mask_raw, &mask_in4.s_addr, 4); + { + inet_ntop(AF_INET, &((const sockaddr_in*)client)->sin_addr, buf, sizeof(buf)); + in_port = ntohs(((sockaddr_in*)sock_us)->sin_port); + socklen_t raddrsz = sizeof(sockaddr_in); + if (getpeername(incomingSockfd, (sockaddr*) raddr, &raddrsz) == 0) + inet_ntop(AF_INET, &((const sockaddr_in*)raddr)->sin_addr, target, sizeof(target)); + else + ServerInstance->Logs->Log("SOCKET", DEBUG, "Can't get peername: %s", strerror(errno)); + } - if (bits > 32) - bits = 32; - } - else - { - /* The address was valid ipv4, - * but the mask that went with it wasnt. - */ - free(mask); - return false; + ServerInstance->SE->NonBlocking(incomingSockfd); + ServerInstance->stats->statsAccept++; + ServerInstance->Users->AddUser(ServerInstance, incomingSockfd, in_port, false, this->family, client, target); + } + else + { + ServerInstance->SE->Shutdown(incomingSockfd, 2); + ServerInstance->SE->Close(incomingSockfd); + ServerInstance->stats->statsRefused++; + } } + break; } - else - { - /* The address was neither ipv4 or ipv6 */ - free(mask); - return false; - } - - /* Low-level-match the bits in the raw data */ - free(mask); - return MatchCIDRBits(addr_raw, mask_raw, bits); } /** This will bind a socket to a port. It works for UDP/TCP. * It can only bind to IP addresses, if you wish to bind to hostnames * you should first resolve them using class 'Resolver'. */ -bool InspIRCd::BindSocket(int sockfd, int port, char* addr, bool dolisten) +bool InspIRCd::BindSocket(int sockfd, int port, const char* addr, bool dolisten) { /* We allocate 2 of these, because sockaddr_in6 is larger than sockaddr (ugh, hax) */ - sockaddr* server = new sockaddr[2]; - memset(server,0,sizeof(sockaddr)*2); + sockaddr* servaddr = new sockaddr[2]; + memset(servaddr,0,sizeof(sockaddr)*2); int ret, size; if (*addr == '*') - *addr = 0; + addr = ""; #ifdef IPV6 if (*addr) @@ -321,13 +170,13 @@ bool InspIRCd::BindSocket(int sockfd, int port, char* addr, bool dolisten) in6_addr addy; if (inet_pton(AF_INET6, addr, &addy) < 1) { - delete[] server; + delete[] servaddr; return false; } - ((sockaddr_in6*)server)->sin6_family = AF_INET6; - memcpy(&(((sockaddr_in6*)server)->sin6_addr), &addy, sizeof(in6_addr)); - ((sockaddr_in6*)server)->sin6_port = htons(port); + ((sockaddr_in6*)servaddr)->sin6_family = AF_INET6; + memcpy(&(((sockaddr_in6*)servaddr)->sin6_addr), &addy, sizeof(in6_addr)); + ((sockaddr_in6*)servaddr)->sin6_port = htons(port); size = sizeof(sockaddr_in6); } else @@ -336,13 +185,13 @@ bool InspIRCd::BindSocket(int sockfd, int port, char* addr, bool dolisten) in_addr addy; if (inet_pton(AF_INET, addr, &addy) < 1) { - delete[] server; + delete[] servaddr; return false; } - ((sockaddr_in*)server)->sin_family = AF_INET; - ((sockaddr_in*)server)->sin_addr = addy; - ((sockaddr_in*)server)->sin_port = htons(port); + ((sockaddr_in*)servaddr)->sin_family = AF_INET; + ((sockaddr_in*)servaddr)->sin_addr = addy; + ((sockaddr_in*)servaddr)->sin_port = htons(port); size = sizeof(sockaddr_in); } } @@ -353,45 +202,45 @@ bool InspIRCd::BindSocket(int sockfd, int port, char* addr, bool dolisten) /* Port -1: Means UDP IPV4 port binding - Special case * used by DNS engine. */ - ((sockaddr_in*)server)->sin_family = AF_INET; - ((sockaddr_in*)server)->sin_addr.s_addr = htonl(INADDR_ANY); - ((sockaddr_in*)server)->sin_port = 0; + ((sockaddr_in*)servaddr)->sin_family = AF_INET; + ((sockaddr_in*)servaddr)->sin_addr.s_addr = htonl(INADDR_ANY); + ((sockaddr_in*)servaddr)->sin_port = 0; size = sizeof(sockaddr_in); } else { /* Theres no address here, default to ipv6 bind to all */ - ((sockaddr_in6*)server)->sin6_family = AF_INET6; - memset(&(((sockaddr_in6*)server)->sin6_addr), 0, sizeof(in6_addr)); - ((sockaddr_in6*)server)->sin6_port = htons(port); + ((sockaddr_in6*)servaddr)->sin6_family = AF_INET6; + memset(&(((sockaddr_in6*)servaddr)->sin6_addr), 0, sizeof(in6_addr)); + ((sockaddr_in6*)servaddr)->sin6_port = htons(port); size = sizeof(sockaddr_in6); } } #else /* If we aren't built with ipv6, the choice becomes simple */ - ((sockaddr_in*)server)->sin_family = AF_INET; + ((sockaddr_in*)servaddr)->sin_family = AF_INET; if (*addr) { /* There is an address here. */ in_addr addy; if (inet_pton(AF_INET, addr, &addy) < 1) { - delete[] server; + delete[] servaddr; return false; } - ((sockaddr_in*)server)->sin_addr = addy; + ((sockaddr_in*)servaddr)->sin_addr = addy; } else { /* Bind ipv4 to all */ - ((sockaddr_in*)server)->sin_addr.s_addr = htonl(INADDR_ANY); + ((sockaddr_in*)servaddr)->sin_addr.s_addr = htonl(INADDR_ANY); } /* Bind ipv4 port number */ - ((sockaddr_in*)server)->sin_port = htons(port); + ((sockaddr_in*)servaddr)->sin_port = htons(port); size = sizeof(sockaddr_in); #endif - ret = SE->Bind(sockfd, server, size); - delete[] server; + ret = SE->Bind(sockfd, servaddr, size); + delete[] servaddr; if (ret < 0) { @@ -403,19 +252,19 @@ bool InspIRCd::BindSocket(int sockfd, int port, char* addr, bool dolisten) { if (SE->Listen(sockfd, Config->MaxConn) == -1) { - this->Log(DEFAULT,"ERROR in listen(): %s",strerror(errno)); + this->Logs->Log("SOCKET",DEFAULT,"ERROR in listen(): %s",strerror(errno)); return false; } else { - this->Log(DEBUG,"New socket binding for %d with listen: %s:%d", sockfd, addr, port); + this->Logs->Log("SOCKET",DEBUG,"New socket binding for %d with listen: %s:%d", sockfd, addr, port); SE->NonBlocking(sockfd); return true; } } else { - this->Log(DEBUG,"New socket binding for %d without listen: %s:%d", sockfd, addr, port); + this->Logs->Log("SOCKET",DEBUG,"New socket binding for %d without listen: %s:%d", sockfd, addr, port); return true; } } @@ -426,7 +275,8 @@ int irc::sockets::OpenTCPSocket(char* addr, int socktype) { int sockfd; int on = 1; - struct linger linger = { 0 }; + addr = addr; + struct linger linger = { 0, 0 }; #ifdef IPV6 if (strchr(addr,':') || (!*addr)) sockfd = socket (PF_INET6, socktype, 0); @@ -450,7 +300,7 @@ int irc::sockets::OpenTCPSocket(char* addr, int socktype) } } -int InspIRCd::BindPorts(bool bail, int &ports_found, FailedPortList &failed_ports) +int InspIRCd::BindPorts(bool, int &ports_found, FailedPortList &failed_ports) { char configToken[MAXBUF], Addr[MAXBUF], Type[MAXBUF]; int bound = 0; @@ -466,12 +316,15 @@ int InspIRCd::BindPorts(bool bail, int &ports_found, FailedPortList &failed_port Config->ConfValue(Config->config_data, "bind", "port", count, configToken, MAXBUF); Config->ConfValue(Config->config_data, "bind", "address", count, Addr, MAXBUF); Config->ConfValue(Config->config_data, "bind", "type", count, Type, MAXBUF); - + + if (strncmp(Addr, "::ffff:", 7) == 0) + this->Logs->Log("SOCKET",DEFAULT, "Using 4in6 (::ffff:) isn't recommended. You should bind IPv4 addresses directly instead."); + if ((!*Type) || (!strcmp(Type,"clients"))) { irc::portparser portrange(configToken, false); int portno = -1; - while ((portno = portrange.GetToken())) + while (0 != (portno = portrange.GetToken())) { if (*Addr == '*') *Addr = 0; @@ -520,7 +373,7 @@ int InspIRCd::BindPorts(bool bail, int &ports_found, FailedPortList &failed_port { if (((*n)->GetIP() == old_ports[k].first) && ((*n)->GetPort() == old_ports[k].second)) { - this->Log(DEFAULT,"Port binding %s:%d was removed from the config file, closing.", old_ports[k].first.c_str(), old_ports[k].second); + this->Logs->Log("SOCKET",DEFAULT,"Port binding %s:%d was removed from the config file, closing.", old_ports[k].first.c_str(), old_ports[k].second); delete *n; Config->ports.erase(n); break; @@ -544,3 +397,4 @@ int irc::sockets::insp_aton(const char* a, insp_inaddr* n) return inet_pton(AF_FAMILY, a, n); } +