#include "inspstring.h"
#include "helperfuncs.h"
#include "socketengine.h"
-#include "message.h"
-
-extern InspIRCd* ServerInstance;
-extern ServerConfig* Config;
-extern time_t TIME;
-
-/* Used when comparing CIDR masks for the modulus bits left over */
-
-char inverted_bits[8] = { 0x00, /* 00000000 - 0 bits */
- 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 */
+#include "wildcard.h"
+
+using namespace std;
+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 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 */
};
-bool MatchCIDRBits(unsigned char* address, unsigned char* mask, unsigned int mask_bits)
+/* 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 modulus = mask_bits & 0x07; /* Number of whole bytes in the mask */
- unsigned int divisor = mask_bits >> 0x04; /* Remaining bits in the mask after whole bytes are dealt with */
+ unsigned int modulus = mask_bits % 8; /* Number of whole bytes in the mask */
+ unsigned int divisor = mask_bits / 8; /* Remaining bits in the mask after whole bytes are dealt with */
/* First compare the whole bytes, if they dont match, return false */
if (memcmp(address, mask, divisor))
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@<mask>/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);
+
+ /* 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! */
+ return false;
+ }
+
+#ifdef SUPPORT_IP6LINKS
+ in6_addr address_in6;
+ in6_addr mask_in6;
+
+ 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);
+
+ if (bits > 128)
+ bits = 128;
+ }
+ else
+ {
+ /* The address was valid ipv6, but the mask
+ * that goes with it wasnt.
+ */
+ free(mask);
+ return false;
+ }
+ }
+ 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);
+
+ if (bits > 32)
+ bits = 32;
+ }
+ else
+ {
+ /* The address was valid ipv4,
+ * but the mask that went with it wasnt.
+ */
+ free(mask);
+ return false;
+ }
+ }
+ 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);
+}
+
+inline void irc::sockets::Blocking(int s)
+{
+ int flags = fcntl(s, F_GETFL, 0);
+ fcntl(s, F_SETFL, flags ^ O_NONBLOCK);
+}
+
+inline void irc::sockets::NonBlocking(int s)
+{
+ int flags = fcntl(s, F_GETFL, 0);
+ fcntl(s, F_SETFL, flags | O_NONBLOCK);
+}
+
+
/** 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 BindSocket(int sockfd, insp_sockaddr client, insp_sockaddr server, int port, char* addr)
+bool InspIRCd::BindSocket(int sockfd, insp_sockaddr client, insp_sockaddr server, int port, char* addr)
{
memset(&server,0,sizeof(server));
insp_inaddr addy;
// Open a TCP Socket
-int OpenTCPSocket()
+int irc::sockets::OpenTCPSocket()
{
int sockfd;
int on = 1;
}
}
-bool HasPort(int port, char* addr)
+/* XXX: Probably belongs in class InspIRCd */
+bool InspIRCd::HasPort(int port, char* addr)
{
- for (unsigned long count = 0; count < ServerInstance->stats->BoundPortCount; count++)
+ for (unsigned long count = 0; count < stats->BoundPortCount; count++)
{
if ((port == Config->ports[count]) && (!strcasecmp(Config->addrs[count],addr)))
{
return false;
}
-int BindPorts(bool bail)
+/* XXX: Probably belongs in class InspIRCd */
+int InspIRCd::BindPorts(bool bail)
{
char configToken[MAXBUF], Addr[MAXBUF], Type[MAXBUF];
insp_sockaddr client, server;
if (!bail)
{
- int InitialPortCount = ServerInstance->stats->BoundPortCount;
+ int InitialPortCount = stats->BoundPortCount;
log(DEBUG,"Initial port count: %d",InitialPortCount);
for (int count = 0; count < Config->ConfValueEnum(Config->config_data, "bind"); count++)
if ((Config->openSockfd[count] = OpenTCPSocket()) == ERROR)
{
log(DEBUG,"Bad fd %d binding port [%s:%d]",Config->openSockfd[count],Config->addrs[count],Config->ports[count]);
- return ERROR;
- }
- if (!BindSocket(Config->openSockfd[count],client,server,Config->ports[count],Config->addrs[count]))
- {
- log(DEFAULT,"Failed to bind port [%s:%d]: %s",Config->addrs[count],Config->ports[count],strerror(errno));
}
else
{
- /* Associate the new open port with a slot in the socket engine */
- if (Config->openSockfd[count] > -1)
+ if (!BindSocket(Config->openSockfd[count],client,server,Config->ports[count],Config->addrs[count]))
{
- ServerInstance->SE->AddFd(Config->openSockfd[count],true,X_LISTEN);
- BoundPortCount++;
+ log(DEFAULT,"Failed to bind port [%s:%d]: %s",Config->addrs[count],Config->ports[count],strerror(errno));
+ }
+ else
+ {
+ /* Associate the new open port with a slot in the socket engine */
+ if (Config->openSockfd[count] > -1)
+ {
+ if (!SE->AddFd(Config->openSockfd[count],true,X_LISTEN))
+ {
+ log(DEFAULT,"ERK! Failed to add listening port to socket engine!");
+ shutdown(Config->openSockfd[count],2);
+ close(Config->openSockfd[count]);
+ }
+ else
+ BoundPortCount++;
+ }
}
}
}
if ((Config->openSockfd[BoundPortCount] = OpenTCPSocket()) == ERROR)
{
log(DEBUG,"Bad fd %d binding port [%s:%d]",Config->openSockfd[BoundPortCount],Config->addrs[count],Config->ports[count]);
- return ERROR;
- }
-
- if (!BindSocket(Config->openSockfd[BoundPortCount],client,server,Config->ports[count],Config->addrs[count]))
- {
- log(DEFAULT,"Failed to bind port [%s:%d]: %s",Config->addrs[count],Config->ports[count],strerror(errno));
}
else
{
- /* well we at least bound to one socket so we'll continue */
- BoundPortCount++;
+ if (!BindSocket(Config->openSockfd[BoundPortCount],client,server,Config->ports[count],Config->addrs[count]))
+ {
+ log(DEFAULT,"Failed to bind port [%s:%d]: %s",Config->addrs[count],Config->ports[count],strerror(errno));
+ }
+ else
+ {
+ /* well we at least bound to one socket so we'll continue */
+ BoundPortCount++;
+ }
}
}
-
- /* if we didn't bind to anything then abort */
- if (!BoundPortCount)
- {
- log(DEFAULT,"No ports bound, bailing!");
- printf("\nERROR: Could not bind any of %d ports! Please check your configuration.\n\n", PortCount);
- return ERROR;
- }
-
return BoundPortCount;
}
-const char* insp_ntoa(insp_inaddr n)
+const char* irc::sockets::insp_ntoa(insp_inaddr n)
{
static char buf[1024];
inet_ntop(AF_FAMILY, &n, buf, sizeof(buf));
return buf;
}
-int insp_aton(const char* a, insp_inaddr* n)
+int irc::sockets::insp_aton(const char* a, insp_inaddr* n)
{
return inet_pton(AF_FAMILY, a, n);
}
projects / user / henk / code / inspircd.git / blobdiff