--- /dev/null
+/*
+ * IRC - Internet Relay Chat, common/packet.c
+ * Copyright (C) 1990 Jarkko Oikarinen and
+ * University of Oulu, Computing Center
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 1, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+/** @file
+ * @brief Input packet handling functions.
+ * @version $Id$
+ */
+#include "config.h"
+
+#include "packet.h"
+#include "client.h"
+#include "ircd.h"
+#include "ircd_chattr.h"
+#include "ircd_log.h"
+#include "parse.h"
+#include "s_bsd.h"
+#include "s_misc.h"
+#include "send.h"
+
+/* #include <assert.h> -- Now using assert in ircd_log.h */
+
+/** Add a certain number of bytes to a client's received statistics.
+ * @param[in,out] cptr Client to update.
+ * @param[in] length Number of newly received bytes to add.
+ */
+static void update_bytes_received(struct Client* cptr, unsigned int length)
+{
+ cli_receiveB(&me) += length; /* Update bytes received */
+ cli_receiveB(cptr) += length;
+}
+
+/** Add one message to a client's received statistics.
+ * @param[in,out] cptr Client to update.
+ */
+static void update_messages_received(struct Client* cptr)
+{
+ ++(cli_receiveM(&me));
+ ++(cli_receiveM(cptr));
+}
+
+/** Handle received data from a directly connected server.
+ * @param[in] cptr Peer server that sent us data.
+ * @param[in] buffer Input buffer.
+ * @param[in] length Number of bytes in input buffer.
+ * @return 1 on success or CPTR_KILLED if the client is squit.
+ */
+int server_dopacket(struct Client* cptr, const char* buffer, int length)
+{
+ const char* src;
+ char* endp;
+ char* client_buffer;
+
+ assert(0 != cptr);
+
+ update_bytes_received(cptr, length);
+
+ client_buffer = cli_buffer(cptr);
+ endp = client_buffer + cli_count(cptr);
+ src = buffer;
+
+ while (length-- > 0) {
+ *endp = *src++;
+ /*
+ * Yuck. Stuck. To make sure we stay backward compatible,
+ * we must assume that either CR or LF terminates the message
+ * and not CR-LF. By allowing CR or LF (alone) into the body
+ * of messages, backward compatibility is lost and major
+ * problems will arise. - Avalon
+ */
+ if (IsEol(*endp)) {
+ if (endp == client_buffer)
+ continue; /* Skip extra LF/CR's */
+ *endp = '\0';
+
+ update_messages_received(cptr);
+
+ if (parse_server(cptr, cli_buffer(cptr), endp) == CPTR_KILLED)
+ return CPTR_KILLED;
+ /*
+ * Socket is dead so exit
+ */
+ if (IsDead(cptr))
+ return exit_client(cptr, cptr, &me, cli_info(cptr));
+ endp = client_buffer;
+ }
+ else if (endp < client_buffer + BUFSIZE)
+ ++endp; /* There is always room for the null */
+ }
+ cli_count(cptr) = endp - cli_buffer(cptr);
+ return 1;
+}
+
+/** Handle received data from a new (unregistered) connection.
+ * @param[in] cptr Unregistered connection that sent us data.
+ * @param[in] buffer Input buffer.
+ * @param[in] length Number of bytes in input buffer.
+ * @return 1 on success or CPTR_KILLED if the client is squit.
+ */
+int connect_dopacket(struct Client *cptr, const char *buffer, int length)
+{
+ const char* src;
+ char* endp;
+ char* client_buffer;
+
+ assert(0 != cptr);
+
+ update_bytes_received(cptr, length);
+
+ client_buffer = cli_buffer(cptr);
+ endp = client_buffer + cli_count(cptr);
+ src = buffer;
+
+ while (length-- > 0)
+ {
+ *endp = *src++;
+ /*
+ * Yuck. Stuck. To make sure we stay backward compatible,
+ * we must assume that either CR or LF terminates the message
+ * and not CR-LF. By allowing CR or LF (alone) into the body
+ * of messages, backward compatibility is lost and major
+ * problems will arise. - Avalon
+ */
+ if (IsEol(*endp))
+ {
+ /* Skip extra LF/CR's */
+ if (endp == client_buffer)
+ continue;
+ *endp = '\0';
+
+ update_messages_received(cptr);
+
+ if (parse_client(cptr, cli_buffer(cptr), endp) == CPTR_KILLED)
+ return CPTR_KILLED;
+ /* Socket is dead so exit */
+ if (IsDead(cptr))
+ return exit_client(cptr, cptr, &me, cli_info(cptr));
+ else if (IsServer(cptr))
+ {
+ cli_count(cptr) = 0;
+ return server_dopacket(cptr, src, length);
+ }
+ endp = client_buffer;
+ }
+ else if (endp < client_buffer + BUFSIZE)
+ /* There is always room for the null */
+ ++endp;
+ }
+ cli_count(cptr) = endp - cli_buffer(cptr);
+ return 1;
+}
+
+/** Handle received data from a local client.
+ * @param[in] cptr Local client that sent us data.
+ * @param[in] length Total number of bytes in client's input buffer.
+ * @return 1 on success or CPTR_KILLED if the client is squit.
+ */
+int client_dopacket(struct Client *cptr, unsigned int length)
+{
+ assert(0 != cptr);
+
+ update_bytes_received(cptr, length);
+ update_messages_received(cptr);
+
+ if (CPTR_KILLED == parse_client(cptr, cli_buffer(cptr), cli_buffer(cptr) + length))
+ return CPTR_KILLED;
+ else if (IsDead(cptr))
+ return exit_client(cptr, cptr, &me, cli_info(cptr));
+
+ return 1;
+}
+
+
projects / ircu2.10.12-pk.git / blobdiff