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-rw-r--r--src/command_parse.cpp700
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diff --git a/src/command_parse.cpp b/src/command_parse.cpp
new file mode 100644
index 000000000..7bc554c5a
--- /dev/null
+++ b/src/command_parse.cpp
@@ -0,0 +1,700 @@
+/* +------------------------------------+
+ * | Inspire Internet Relay Chat Daemon |
+ * +------------------------------------+
+ *
+ * Inspire is copyright (C) 2002-2005 ChatSpike-Dev.
+ * E-mail:
+ * <brain@chatspike.net>
+ * <Craig@chatspike.net>
+ *
+ * Written by Craig Edwards, Craig McLure, and others.
+ * This program is free but copyrighted software; see
+ * the file COPYING for details.
+ *
+ * ---------------------------------------------------
+ */
+
+using namespace std;
+
+#include "inspircd_config.h"
+#include "inspircd.h"
+#include "inspircd_io.h"
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/errno.h>
+#include <sys/ioctl.h>
+#include <sys/utsname.h>
+#include <time.h>
+#include <string>
+#ifdef GCC3
+#include <ext/hash_map>
+#else
+#include <hash_map>
+#endif
+#include <map>
+#include <sstream>
+#include <vector>
+#include <deque>
+#include <sched.h>
+#ifdef THREADED_DNS
+#include <pthread.h>
+#endif
+#include "users.h"
+#include "ctables.h"
+#include "globals.h"
+#include "modules.h"
+#include "dynamic.h"
+#include "wildcard.h"
+#include "message.h"
+#include "mode.h"
+#include "commands.h"
+#include "xline.h"
+#include "inspstring.h"
+#include "dnsqueue.h"
+#include "helperfuncs.h"
+#include "hashcomp.h"
+#include "socketengine.h"
+#include "userprocess.h"
+#include "socket.h"
+#include "dns.h"
+#include "typedefs.h"
+
+extern InspIRCd* ServerInstance;
+
+extern std::vector<Module*> modules;
+extern std::vector<ircd_module*> factory;
+extern std::vector<InspSocket*> module_sockets;
+extern std::vector<userrec*> local_users;
+
+extern int MODCOUNT;
+extern Module* IOHookModule;
+extern InspSocket* socket_ref[65535];
+extern time_t TIME;
+
+extern SocketEngine* SE = NULL;
+
+// This table references users by file descriptor.
+// its an array to make it VERY fast, as all lookups are referenced
+// by an integer, meaning there is no need for a scan/search operation.
+extern userrec* fd_ref_table[65536];
+
+extern serverstats* stats = new serverstats;
+extern Server* MyServer = new Server;
+extern ServerConfig *Config = new ServerConfig;
+
+extern user_hash clientlist;
+extern chan_hash chanlist;
+extern command_table cmdlist;
+
+/* This function pokes and hacks at a parameter list like the following:
+ *
+ * PART #winbot,#darkgalaxy :m00!
+ *
+ * to turn it into a series of individual calls like this:
+ *
+ * PART #winbot :m00!
+ * PART #darkgalaxy :m00!
+ *
+ * The seperate calls are sent to a callback function provided by the caller
+ * (the caller will usually call itself recursively). The callback function
+ * must be a command handler. Calling this function on a line with no list causes
+ * no action to be taken. You must provide a starting and ending parameter number
+ * where the range of the list can be found, useful if you have a terminating
+ * parameter as above which is actually not part of the list, or parameters
+ * before the actual list as well. This code is used by many functions which
+ * can function as "one to list" (see the RFC) */
+
+int loop_call(handlerfunc fn, char **parameters, int pcnt, userrec *u, int start, int end, int joins)
+{
+ char plist[MAXBUF];
+ char *param;
+ char *pars[32];
+ char blog[32][MAXBUF];
+ char blog2[32][MAXBUF];
+ int j = 0, q = 0, total = 0, t = 0, t2 = 0, total2 = 0;
+ char keystr[MAXBUF];
+ char moo[MAXBUF];
+
+ for (int i = 0; i <32; i++)
+ strcpy(blog[i],"");
+
+ for (int i = 0; i <32; i++)
+ strcpy(blog2[i],"");
+
+ strcpy(moo,"");
+ for (int i = 0; i <10; i++)
+ {
+ if (!parameters[i])
+ {
+ parameters[i] = moo;
+ }
+ }
+ if (joins)
+ {
+ if (pcnt > 1) /* we have a key to copy */
+ {
+ strlcpy(keystr,parameters[1],MAXBUF);
+ }
+ }
+
+ if (!parameters[start])
+ {
+ return 0;
+ }
+ if (!strchr(parameters[start],','))
+ {
+ return 0;
+ }
+ strcpy(plist,"");
+ for (int i = start; i <= end; i++)
+ {
+ if (parameters[i])
+ {
+ strlcat(plist,parameters[i],MAXBUF);
+ }
+ }
+
+ j = 0;
+ param = plist;
+
+ t = strlen(plist);
+ for (int i = 0; i < t; i++)
+ {
+ if (plist[i] == ',')
+ {
+ plist[i] = '\0';
+ strlcpy(blog[j++],param,MAXBUF);
+ param = plist+i+1;
+ if (j>20)
+ {
+ WriteServ(u->fd,"407 %s %s :Too many targets in list, message not delivered.",u->nick,blog[j-1]);
+ return 1;
+ }
+ }
+ }
+ strlcpy(blog[j++],param,MAXBUF);
+ total = j;
+
+ if ((joins) && (keystr) && (total>0)) // more than one channel and is joining
+ {
+ strcat(keystr,",");
+ }
+
+ if ((joins) && (keystr))
+ {
+ if (strchr(keystr,','))
+ {
+ j = 0;
+ param = keystr;
+ t2 = strlen(keystr);
+ for (int i = 0; i < t2; i++)
+ {
+ if (keystr[i] == ',')
+ {
+ keystr[i] = '\0';
+ strlcpy(blog2[j++],param,MAXBUF);
+ param = keystr+i+1;
+ }
+ }
+ strlcpy(blog2[j++],param,MAXBUF);
+ total2 = j;
+ }
+ }
+
+ for (j = 0; j < total; j++)
+ {
+ if (blog[j])
+ {
+ pars[0] = blog[j];
+ }
+ for (q = end; q < pcnt-1; q++)
+ {
+ if (parameters[q+1])
+ {
+ pars[q-end+1] = parameters[q+1];
+ }
+ }
+ if ((joins) && (parameters[1]))
+ {
+ if (pcnt > 1)
+ {
+ pars[1] = blog2[j];
+ }
+ else
+ {
+ pars[1] = NULL;
+ }
+ }
+ /* repeatedly call the function with the hacked parameter list */
+ if ((joins) && (pcnt > 1))
+ {
+ if (pars[1])
+ {
+ // pars[1] already set up and containing key from blog2[j]
+ fn(pars,2,u);
+ }
+ else
+ {
+ pars[1] = parameters[1];
+ fn(pars,2,u);
+ }
+ }
+ else
+ {
+ fn(pars,pcnt-(end-start),u);
+ }
+ }
+
+ return 1;
+}
+
+bool is_valid_cmd(std::string &commandname, int pcnt, userrec * user)
+{
+ for (unsigned int i = 0; i < cmdlist.size(); i++)
+ {
+ if (!strcasecmp(cmdlist[i].command,commandname.c_str()))
+ {
+ if (cmdlist[i].handler_function)
+ {
+ if ((pcnt>=cmdlist[i].min_params) && (strcasecmp(cmdlist[i].source,"<core>")))
+ {
+ if ((strchr(user->modes,cmdlist[i].flags_needed)) || (!cmdlist[i].flags_needed))
+ {
+ if (cmdlist[i].flags_needed)
+ {
+ if ((user->HasPermission(commandname)) || (is_uline(user->server)))
+ {
+ return true;
+ }
+ else
+ {
+ return false;
+ }
+ }
+ return true;
+ }
+ }
+ }
+ }
+ }
+ return false;
+}
+
+// calls a handler function for a command
+
+void call_handler(std::string &commandname,char **parameters, int pcnt, userrec *user)
+{
+ for (unsigned int i = 0; i < cmdlist.size(); i++)
+ {
+ if (!strcasecmp(cmdlist[i].command,commandname.c_str()))
+ {
+ if (cmdlist[i].handler_function)
+ {
+ if (pcnt>=cmdlist[i].min_params)
+ {
+ if ((strchr(user->modes,cmdlist[i].flags_needed)) || (!cmdlist[i].flags_needed))
+ {
+ if (cmdlist[i].flags_needed)
+ {
+ if ((user->HasPermission(commandname)) || (is_uline(user->server)))
+ {
+ cmdlist[i].handler_function(parameters,pcnt,user);
+ }
+ }
+ else
+ {
+ cmdlist[i].handler_function(parameters,pcnt,user);
+ }
+ }
+ }
+ }
+ }
+ }
+}
+
+int process_parameters(char **command_p,char *parameters)
+{
+ int j = 0;
+ int q = strlen(parameters);
+ if (!q)
+ {
+ /* no parameters, command_p invalid! */
+ return 0;
+ }
+ if (parameters[0] == ':')
+ {
+ command_p[0] = parameters+1;
+ return 1;
+ }
+ if (q)
+ {
+ if ((strchr(parameters,' ')==NULL) || (parameters[0] == ':'))
+ {
+ /* only one parameter */
+ command_p[0] = parameters;
+ if (parameters[0] == ':')
+ {
+ if (strchr(parameters,' ') != NULL)
+ {
+ command_p[0]++;
+ }
+ }
+ return 1;
+ }
+ }
+ command_p[j++] = parameters;
+ for (int i = 0; i <= q; i++)
+ {
+ if (parameters[i] == ' ')
+ {
+ command_p[j++] = parameters+i+1;
+ parameters[i] = '\0';
+ if (command_p[j-1][0] == ':')
+ {
+ *command_p[j-1]++; /* remove dodgy ":" */
+ break;
+ /* parameter like this marks end of the sequence */
+ }
+ }
+ }
+ return j; /* returns total number of items in the list */
+}
+
+void process_command(userrec *user, char* cmd)
+{
+ char *parameters;
+ char *command;
+ char *command_p[127];
+ char p[MAXBUF], temp[MAXBUF];
+ int j, items, cmd_found;
+
+ for (int i = 0; i < 127; i++)
+ command_p[i] = NULL;
+
+ if (!user)
+ {
+ return;
+ }
+ if (!cmd)
+ {
+ return;
+ }
+ if (!cmd[0])
+ {
+ return;
+ }
+
+ int total_params = 0;
+ if (strlen(cmd)>2)
+ {
+ for (unsigned int q = 0; q < strlen(cmd)-1; q++)
+ {
+ if ((cmd[q] == ' ') && (cmd[q+1] == ':'))
+ {
+ total_params++;
+ // found a 'trailing', we dont count them after this.
+ break;
+ }
+ if (cmd[q] == ' ')
+ total_params++;
+ }
+ }
+
+ // another phidjit bug...
+ if (total_params > 126)
+ {
+ *(strchr(cmd,' ')) = '\0';
+ WriteServ(user->fd,"421 %s %s :Too many parameters given",user->nick,cmd);
+ return;
+ }
+
+ strlcpy(temp,cmd,MAXBUF);
+
+ std::string tmp = cmd;
+ for (int i = 0; i <= MODCOUNT; i++)
+ {
+ std::string oldtmp = tmp;
+ modules[i]->OnServerRaw(tmp,true,user);
+ if (oldtmp != tmp)
+ {
+ log(DEBUG,"A Module changed the input string!");
+ log(DEBUG,"New string: %s",tmp.c_str());
+ log(DEBUG,"Old string: %s",oldtmp.c_str());
+ break;
+ }
+ }
+ strlcpy(cmd,tmp.c_str(),MAXBUF);
+ strlcpy(temp,cmd,MAXBUF);
+
+ if (!strchr(cmd,' '))
+ {
+ /* no parameters, lets skip the formalities and not chop up
+ * the string */
+ log(DEBUG,"About to preprocess command with no params");
+ items = 0;
+ command_p[0] = NULL;
+ parameters = NULL;
+ for (unsigned int i = 0; i <= strlen(cmd); i++)
+ {
+ cmd[i] = toupper(cmd[i]);
+ }
+ command = cmd;
+ }
+ else
+ {
+ strcpy(cmd,"");
+ j = 0;
+ /* strip out extraneous linefeeds through mirc's crappy pasting (thanks Craig) */
+ for (unsigned int i = 0; i < strlen(temp); i++)
+ {
+ if ((temp[i] != 10) && (temp[i] != 13) && (temp[i] != 0) && (temp[i] != 7))
+ {
+ cmd[j++] = temp[i];
+ cmd[j] = 0;
+ }
+ }
+ /* split the full string into a command plus parameters */
+ parameters = p;
+ strcpy(p," ");
+ command = cmd;
+ if (strchr(cmd,' '))
+ {
+ for (unsigned int i = 0; i <= strlen(cmd); i++)
+ {
+ /* capitalise the command ONLY, leave params intact */
+ cmd[i] = toupper(cmd[i]);
+ /* are we nearly there yet?! :P */
+ if (cmd[i] == ' ')
+ {
+ command = cmd;
+ parameters = cmd+i+1;
+ cmd[i] = '\0';
+ break;
+ }
+ }
+ }
+ else
+ {
+ for (unsigned int i = 0; i <= strlen(cmd); i++)
+ {
+ cmd[i] = toupper(cmd[i]);
+ }
+ }
+
+ }
+ cmd_found = 0;
+
+ if (strlen(command)>MAXCOMMAND)
+ {
+ WriteServ(user->fd,"421 %s %s :Command too long",user->nick,command);
+ return;
+ }
+
+ for (unsigned int x = 0; x < strlen(command); x++)
+ {
+ if (((command[x] < 'A') || (command[x] > 'Z')) && (command[x] != '.'))
+ {
+ if (((command[x] < '0') || (command[x]> '9')) && (command[x] != '-'))
+ {
+ if (strchr("@!\"$%^&*(){}[]_=+;:'#~,<>/?\\|`",command[x]))
+ {
+ stats->statsUnknown++;
+ WriteServ(user->fd,"421 %s %s :Unknown command",user->nick,command);
+ return;
+ }
+ }
+ }
+ }
+
+ std::string xcommand = command;
+ for (unsigned int i = 0; i != cmdlist.size(); i++)
+ {
+ if (cmdlist[i].command[0])
+ {
+ if (strlen(command)>=(strlen(cmdlist[i].command))) if (!strncmp(command, cmdlist[i].command,MAXCOMMAND))
+ {
+ if (parameters)
+ {
+ if (parameters[0])
+ {
+ items = process_parameters(command_p,parameters);
+ }
+ else
+ {
+ items = 0;
+ command_p[0] = NULL;
+ }
+ }
+ else
+ {
+ items = 0;
+ command_p[0] = NULL;
+ }
+
+ if (user)
+ {
+ /* activity resets the ping pending timer */
+ user->nping = TIME + user->pingmax;
+ if ((items) < cmdlist[i].min_params)
+ {
+ log(DEBUG,"process_command: not enough parameters: %s %s",user->nick,command);
+ WriteServ(user->fd,"461 %s %s :Not enough parameters",user->nick,command);
+ return;
+ }
+ if ((!strchr(user->modes,cmdlist[i].flags_needed)) && (cmdlist[i].flags_needed))
+ {
+ log(DEBUG,"process_command: permission denied: %s %s",user->nick,command);
+ WriteServ(user->fd,"481 %s :Permission Denied- You do not have the required operator privilages",user->nick);
+ cmd_found = 1;
+ return;
+ }
+ if ((cmdlist[i].flags_needed) && (!user->HasPermission(xcommand)))
+ {
+ log(DEBUG,"process_command: permission denied: %s %s",user->nick,command);
+ WriteServ(user->fd,"481 %s :Permission Denied- Oper type %s does not have access to command %s",user->nick,user->oper,command);
+ cmd_found = 1;
+ return;
+ }
+ /* if the command isnt USER, PASS, or NICK, and nick is empty,
+ * deny command! */
+ if ((strncmp(command,"USER",4)) && (strncmp(command,"NICK",4)) && (strncmp(command,"PASS",4)))
+ {
+ if ((!isnick(user->nick)) || (user->registered != 7))
+ {
+ log(DEBUG,"process_command: not registered: %s %s",user->nick,command);
+ WriteServ(user->fd,"451 %s :You have not registered",command);
+ return;
+ }
+ }
+ if ((user->registered == 7) && (!strchr(user->modes,'o')))
+ {
+ std::stringstream dcmds(Config->DisabledCommands);
+ while (!dcmds.eof())
+ {
+ std::string thiscmd;
+ dcmds >> thiscmd;
+ if (!strcasecmp(thiscmd.c_str(),command))
+ {
+ // command is disabled!
+ WriteServ(user->fd,"421 %s %s :This command has been disabled.",user->nick,command);
+ return;
+ }
+ }
+ }
+ if ((user->registered == 7) || (!strncmp(command,"USER",4)) || (!strncmp(command,"NICK",4)) || (!strncmp(command,"PASS",4)))
+ {
+ if (cmdlist[i].handler_function)
+ {
+
+ /* ikky /stats counters */
+ if (temp)
+ {
+ cmdlist[i].use_count++;
+ cmdlist[i].total_bytes+=strlen(temp);
+ }
+
+ int MOD_RESULT = 0;
+ FOREACH_RESULT(OnPreCommand(command,command_p,items,user));
+ if (MOD_RESULT == 1) {
+ return;
+ }
+
+ /* WARNING: nothing may come after the
+ * command handler call, as the handler
+ * may free the user structure! */
+
+ cmdlist[i].handler_function(command_p,items,user);
+ }
+ return;
+ }
+ else
+ {
+ WriteServ(user->fd,"451 %s :You have not registered",command);
+ return;
+ }
+ }
+ cmd_found = 1;
+ }
+
+ }
+ }
+ if ((!cmd_found) && (user))
+ {
+ stats->statsUnknown++;
+ WriteServ(user->fd,"421 %s %s :Unknown command",user->nick,command);
+ }
+}
+
+bool remove_commands(const char* source)
+{
+ bool go_again = true;
+ while (go_again)
+ {
+ go_again = false;
+ for (std::deque<command_t>::iterator i = cmdlist.begin(); i != cmdlist.end(); i++)
+ {
+ if (!strcmp(i->source,source))
+ {
+ log(DEBUG,"removecommands(%s) Removing dependent command: %s",i->source,i->command);
+ cmdlist.erase(i);
+ go_again = true;
+ break;
+ }
+ }
+ }
+ return true;
+}
+
+void process_buffer(const char* cmdbuf,userrec *user)
+{
+ if (!user)
+ {
+ log(DEFAULT,"*** BUG *** process_buffer was given an invalid parameter");
+ return;
+ }
+ char cmd[MAXBUF];
+ if (!cmdbuf)
+ {
+ log(DEFAULT,"*** BUG *** process_buffer was given an invalid parameter");
+ return;
+ }
+ if (!cmdbuf[0])
+ {
+ return;
+ }
+ while (*cmdbuf == ' ') cmdbuf++; // strip leading spaces
+
+ strlcpy(cmd,cmdbuf,MAXBUF);
+ if (!cmd[0])
+ {
+ return;
+ }
+ int sl = strlen(cmd)-1;
+ if ((cmd[sl] == 13) || (cmd[sl] == 10))
+ {
+ cmd[sl] = '\0';
+ }
+ sl = strlen(cmd)-1;
+ if ((cmd[sl] == 13) || (cmd[sl] == 10))
+ {
+ cmd[sl] = '\0';
+ }
+ sl = strlen(cmd)-1;
+ while (cmd[sl] == ' ') // strip trailing spaces
+ {
+ cmd[sl] = '\0';
+ sl = strlen(cmd)-1;
+ }
+
+ if (!cmd[0])
+ {
+ return;
+ }
+ log(DEBUG,"CMDIN: %s %s",user->nick,cmd);
+ tidystring(cmd);
+ if ((user) && (cmd))
+ {
+ process_command(user,cmd);
+ }
+}
+
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