/* * PPP User command processing module * * Written by Toshiharu OHNO (tony-o@iij.ad.jp) * * Copyright (C) 1993, Internet Initiative Japan, Inc. All rights reserverd. * * Redistribution and use in source and binary forms are permitted * provided that the above copyright notice and this paragraph are * duplicated in all such forms and that any documentation, * advertising materials, and other materials related to such * distribution and use acknowledge that the software was developed * by the Internet Initiative Japan, Inc. The name of the * IIJ may not be used to endorse or promote products derived * from this software without specific prior written permission. * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. * * $Id: command.c,v 1.79 1997/09/09 23:23:24 brian Exp $ * */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "fsm.h" #include "phase.h" #include "lcp.h" #include "ipcp.h" #include "modem.h" #include "filter.h" #include "command.h" #include "alias_cmd.h" #include "hdlc.h" #include "loadalias.h" #include "vars.h" #include "systems.h" #include "chat.h" #include "os.h" #include "timeout.h" #include "server.h" extern void Cleanup(), TtyTermMode(), PacketMode(); extern int EnableCommand(), DisableCommand(), DisplayCommand(); extern int AcceptCommand(), DenyCommand(); static int AliasCommand(); extern int LocalAuthCommand(); extern int LoadCommand(), SaveCommand(); extern int ChangeParity(char *); extern int SelectSystem(); extern int ShowRoute(); extern void TtyOldMode(), TtyCommandMode(); extern struct pppvars pppVars; extern struct cmdtab const SetCommands[]; extern char *IfDevName; struct in_addr ifnetmask; int randinit; static int ShowCommand(struct cmdtab const *, int, char **); static int TerminalCommand(struct cmdtab const *, int, char **); static int QuitCommand(struct cmdtab const *, int, char **); static int CloseCommand(struct cmdtab const *, int, char **); static int DialCommand(struct cmdtab const *, int, char **); static int DownCommand(struct cmdtab const *, int, char **); static int SetCommand(struct cmdtab const *, int, char **); static int AddCommand(struct cmdtab const *, int, char **); static int DeleteCommand(struct cmdtab const *, int, char **); static int BgShellCommand(struct cmdtab const *, int, char **); static int FgShellCommand(struct cmdtab const *, int, char **); static int ShellCommand(struct cmdtab const *, int, char **, int); static int HelpCommand(struct cmdtab const * list, int argc, char **argv, struct cmdtab const * plist) { struct cmdtab const *cmd; int n; if (!VarTerm) return 0; if (argc > 0) { for (cmd = plist; cmd->name; cmd++) if (strcasecmp(cmd->name, *argv) == 0 && (cmd->lauth & VarLocalAuth)) { fprintf(VarTerm, "%s\n", cmd->syntax); return 0; } return -1; } n = 0; for (cmd = plist; cmd->func; cmd++) if (cmd->name && (cmd->lauth & VarLocalAuth)) { fprintf(VarTerm, " %-9s: %-20s\n", cmd->name, cmd->helpmes); n++; } if (n & 1) fprintf(VarTerm, "\n"); return 0; } int IsInteractive() { char *mes = NULL; if (mode & MODE_DDIAL) mes = "Working in dedicated dial mode."; else if (mode & MODE_BACKGROUND) mes = "Working in background mode."; else if (mode & MODE_AUTO) mes = "Working in auto mode."; else if (mode & MODE_DIRECT) mes = "Working in direct mode."; else if (mode & MODE_DEDICATED) mes = "Working in dedicated mode."; if (mes) { if (VarTerm) fprintf(VarTerm, "%s\n", mes); return 0; } return 1; } static int DialCommand(struct cmdtab const * cmdlist, int argc, char **argv) { int tries; int res; if (LcpFsm.state > ST_CLOSED) { if (VarTerm) fprintf(VarTerm, "LCP state is [%s]\n", StateNames[LcpFsm.state]); return 0; } if (argc > 0) { if (SelectSystem(*argv, CONFFILE) < 0) { if (VarTerm) fprintf(VarTerm, "%s: not found.\n", *argv); return -1; } } tries = 0; do { if (VarTerm) fprintf(VarTerm, "Dial attempt %u of %d\n", ++tries, VarDialTries); modem = OpenModem(mode); if (modem < 0) { if (VarTerm) fprintf(VarTerm, "Failed to open modem.\n"); break; } if ((res = DialModem()) == EX_DONE) { sleep(1); ModemTimeout(); PacketMode(); break; } else if (res == EX_SIG) return 1; } while (VarDialTries == 0 || tries < VarDialTries); return 0; } static int SetLoopback(struct cmdtab const * cmdlist, int argc, char **argv) { if (argc == 1) if (!strcasecmp(*argv, "on")) VarLoopback = 1; else if (!strcasecmp(*argv, "off")) VarLoopback = 0; return -1; } static int BgShellCommand(struct cmdtab const * cmdlist, int argc, char **argv) { if (argc == 0) return -1; return ShellCommand(cmdlist, argc, argv, 1); } static int FgShellCommand(struct cmdtab const * cmdlist, int argc, char **argv) { return ShellCommand(cmdlist, argc, argv, 0); } static int ShellCommand(struct cmdtab const * cmdlist, int argc, char **argv, int bg) { const char *shell; pid_t shpid; FILE *oVarTerm; #ifdef SHELL_ONLY_INTERACTIVELY /* we're only allowed to shell when we run ppp interactively */ if (mode != MODE_INTER) { LogPrintf(LogWARN, "Can only start a shell in interactive mode\n"); return 1; } #endif #ifdef NO_SHELL_IN_AUTO_INTERACTIVE /* * we want to stop shell commands when we've got a telnet connection to an * auto mode ppp */ if ((mode & (MODE_AUTO | MODE_INTER)) == (MODE_AUTO | MODE_INTER)) { LogPrintf(LogWARN, "Shell is not allowed interactively in auto mode\n"); return 1; } #endif if (argc == 0) if (!(mode & MODE_INTER)) { LogPrintf(LogWARN, "Can only start an interactive shell in" " interactive mode\n"); return 1; } else if (bg) { LogPrintf(LogWARN, "Can only start an interactive shell in" " the foreground mode\n"); return 1; } else if (mode&(MODE_AUTO|MODE_DEDICATED|MODE_DIRECT)) { LogPrintf(LogWARN, "Can't start an interactive shell from" " a telnet session\n"); return 1; } if ((shell = getenv("SHELL")) == 0) shell = _PATH_BSHELL; if ((shpid = fork()) == 0) { int dtablesize, i, fd; if (VarTerm) fd = fileno(VarTerm); else if ((fd = open("/dev/null", O_RDWR)) == -1) { LogPrintf(LogALERT, "Failed to open /dev/null: %s\n", strerror(errno)); exit(1); } for (i = 0; i < 3; i++) dup2(fd, i); if (fd > 2) if (VarTerm) { oVarTerm = VarTerm; VarTerm = 0; if (oVarTerm && oVarTerm != stdout) fclose(oVarTerm); } else close(fd); for (dtablesize = getdtablesize(), i = 3; i < dtablesize; i++) (void) close(i); /* * We are running setuid, we should change to real user for avoiding * security problems. */ if (setgid(getgid()) < 0) { LogPrintf(LogERROR, "setgid: %s\n", strerror(errno)); exit(1); } if (setuid(getuid()) < 0) { LogPrintf(LogERROR, "setuid: %s\n", strerror(errno)); exit(1); } TtyOldMode(); if (argc > 0) { /* substitute pseudo args */ for (i = 1; i < argc; i++) if (strcasecmp(argv[i], "HISADDR") == 0) argv[i] = strdup(inet_ntoa(IpcpInfo.his_ipaddr)); else if (strcasecmp(argv[i], "INTERFACE") == 0) argv[i] = strdup(IfDevName); else if (strcasecmp(argv[i], "MYADDR") == 0) argv[i] = strdup(inet_ntoa(IpcpInfo.want_ipaddr)); if (bg) { pid_t p; p = getpid(); if (daemon(1, 1) == -1) { LogPrintf(LogERROR, "%d: daemon: %s\n", p, strerror(errno)); exit(1); } } (void) execvp(argv[0], argv); } else (void) execl(shell, shell, NULL); LogPrintf(LogWARN, "exec() of %s failed\n", argc > 0 ? argv[0] : shell); exit(255); } if (shpid == (pid_t) - 1) { LogPrintf(LogERROR, "Fork failed: %s\n", strerror(errno)); } else { int status; (void) waitpid(shpid, &status, 0); } TtyCommandMode(1); return (0); } struct cmdtab const Commands[] = { {"accept", NULL, AcceptCommand, LOCAL_AUTH, "accept option request", "accept option .."}, {"add", NULL, AddCommand, LOCAL_AUTH, "add route", "add dest mask gateway"}, {"bg", "!bg", BgShellCommand, LOCAL_AUTH, "Run a command in the background", "[!]bg command"}, {"close", NULL, CloseCommand, LOCAL_AUTH, "Close connection", "close"}, {"delete", NULL, DeleteCommand, LOCAL_AUTH, "delete route", "delete ALL | dest [gateway [mask]]"}, {"deny", NULL, DenyCommand, LOCAL_AUTH, "Deny option request", "deny option .."}, {"dial", "call", DialCommand, LOCAL_AUTH, "Dial and login", "dial|call [remote]"}, {"disable", NULL, DisableCommand, LOCAL_AUTH, "Disable option", "disable option .."}, {"display", NULL, DisplayCommand, LOCAL_AUTH, "Display option configs", "display"}, {"enable", NULL, EnableCommand, LOCAL_AUTH, "Enable option", "enable option .."}, {"passwd", NULL, LocalAuthCommand, LOCAL_NO_AUTH, "Password for manipulation", "passwd LocalPassword"}, {"load", NULL, LoadCommand, LOCAL_AUTH, "Load settings", "load [remote]"}, {"save", NULL, SaveCommand, LOCAL_AUTH, "Save settings", "save"}, {"set", "setup", SetCommand, LOCAL_AUTH, "Set parameters", "set[up] var value"}, {"shell", "!", FgShellCommand, LOCAL_AUTH, "Run a subshell", "shell|! [sh command]"}, {"show", NULL, ShowCommand, LOCAL_AUTH, "Show status and statictics", "show var"}, {"term", NULL, TerminalCommand, LOCAL_AUTH, "Enter to terminal mode", "term"}, {"alias", NULL, AliasCommand, LOCAL_AUTH, "alias control", "alias option [yes|no]"}, {"quit", "bye", QuitCommand, LOCAL_AUTH | LOCAL_NO_AUTH, "Quit PPP program", "quit|bye [all]"}, {"help", "?", HelpCommand, LOCAL_AUTH | LOCAL_NO_AUTH, "Display this message", "help|? [command]", (void *) Commands}, {NULL, "down", DownCommand, LOCAL_AUTH, "Generate down event", "down"}, {NULL, NULL, NULL}, }; extern int ReportCcpStatus(); extern int ReportLcpStatus(); extern int ReportIpcpStatus(); extern int ReportProtStatus(); extern int ReportCompress(); extern int ShowModemStatus(); extern int ReportHdlcStatus(); extern int ShowMemMap(); static int ShowLoopback() { if (VarTerm) fprintf(VarTerm, "Local loopback is %s\n", VarLoopback ? "on" : "off"); return 0; } static int ShowLogLevel() { int i; if (!VarTerm) return 0; fprintf(VarTerm, "Log:"); for (i = LogMIN; i < LogMAXCONF; i++) { if (LogIsKept(i)) fprintf(VarTerm, " %s", LogName(i)); } fprintf(VarTerm, "\n"); return 0; } static int ShowEscape() { int code, bit; if (!VarTerm) return 0; if (EscMap[32]) { for (code = 0; code < 32; code++) if (EscMap[code]) for (bit = 0; bit < 8; bit++) if (EscMap[code] & (1 << bit)) fprintf(VarTerm, " 0x%02x", (code << 3) + bit); fprintf(VarTerm, "\n"); } return 1; } static int ShowTimeout() { if (!VarTerm) return 0; fprintf(VarTerm, " Idle Timer: %d secs LQR Timer: %d secs" " Retry Timer: %d secs\n", VarIdleTimeout, VarLqrTimeout, VarRetryTimeout); return 1; } static int ShowStopped() { if (!VarTerm) return 0; fprintf(VarTerm, " Stopped Timer: LCP: "); if (!LcpFsm.StoppedTimer.load) fprintf(VarTerm, "Disabled"); else fprintf(VarTerm, "%ld secs", LcpFsm.StoppedTimer.load / SECTICKS); fprintf(VarTerm, ", IPCP: "); if (!IpcpFsm.StoppedTimer.load) fprintf(VarTerm, "Disabled"); else fprintf(VarTerm, "%ld secs", IpcpFsm.StoppedTimer.load / SECTICKS); fprintf(VarTerm, ", CCP: "); if (!CcpFsm.StoppedTimer.load) fprintf(VarTerm, "Disabled"); else fprintf(VarTerm, "%ld secs", CcpFsm.StoppedTimer.load / SECTICKS); fprintf(VarTerm, "\n"); return 1; } static int ShowAuthKey() { if (!VarTerm) return 0; fprintf(VarTerm, "AuthName = %s\n", VarAuthName); fprintf(VarTerm, "AuthKey = %s\n", VarAuthKey); return 1; } static int ShowVersion() { extern char VarVersion[]; extern char VarLocalVersion[]; if (!VarTerm) return 0; fprintf(VarTerm, "%s - %s \n", VarVersion, VarLocalVersion); return 1; } static int ShowInitialMRU() { if (!VarTerm) return 0; fprintf(VarTerm, " Initial MRU: %ld\n", VarMRU); return 1; } static int ShowPreferredMTU() { if (!VarTerm) return 0; if (VarPrefMTU) fprintf(VarTerm, " Preferred MTU: %ld\n", VarPrefMTU); else fprintf(VarTerm, " Preferred MTU: unspecified\n"); return 1; } static int ShowReconnect() { if (!VarTerm) return 0; fprintf(VarTerm, " Reconnect Timer: %d, %d tries\n", VarReconnectTimer, VarReconnectTries); return 1; } static int ShowRedial() { if (!VarTerm) return 0; fprintf(VarTerm, " Redial Timer: "); if (VarRedialTimeout >= 0) { fprintf(VarTerm, " %d seconds, ", VarRedialTimeout); } else { fprintf(VarTerm, " Random 0 - %d seconds, ", REDIAL_PERIOD); } fprintf(VarTerm, " Redial Next Timer: "); if (VarRedialNextTimeout >= 0) { fprintf(VarTerm, " %d seconds, ", VarRedialNextTimeout); } else { fprintf(VarTerm, " Random 0 - %d seconds, ", REDIAL_PERIOD); } if (VarDialTries) fprintf(VarTerm, "%d dial tries", VarDialTries); fprintf(VarTerm, "\n"); return 1; } #ifndef NOMSEXT static int ShowMSExt() { if (!VarTerm) return 0; fprintf(VarTerm, " MS PPP extention values \n"); fprintf(VarTerm, " Primary NS : %s\n", inet_ntoa(ns_entries[0])); fprintf(VarTerm, " Secondary NS : %s\n", inet_ntoa(ns_entries[1])); fprintf(VarTerm, " Primary NBNS : %s\n", inet_ntoa(nbns_entries[0])); fprintf(VarTerm, " Secondary NBNS : %s\n", inet_ntoa(nbns_entries[1])); return 1; } #endif extern int ShowIfilter(), ShowOfilter(), ShowDfilter(), ShowAfilter(); struct cmdtab const ShowCommands[] = { {"afilter", NULL, ShowAfilter, LOCAL_AUTH, "Show keep Alive filters", "show afilter option .."}, {"auth", NULL, ShowAuthKey, LOCAL_AUTH, "Show auth name/key", "show auth"}, {"ccp", NULL, ReportCcpStatus, LOCAL_AUTH, "Show CCP status", "show cpp"}, {"compress", NULL, ReportCompress, LOCAL_AUTH, "Show compression statictics", "show compress"}, {"dfilter", NULL, ShowDfilter, LOCAL_AUTH, "Show Demand filters", "show dfilteroption .."}, {"escape", NULL, ShowEscape, LOCAL_AUTH, "Show escape characters", "show escape"}, {"hdlc", NULL, ReportHdlcStatus, LOCAL_AUTH, "Show HDLC error summary", "show hdlc"}, {"ifilter", NULL, ShowIfilter, LOCAL_AUTH, "Show Input filters", "show ifilter option .."}, {"ipcp", NULL, ReportIpcpStatus, LOCAL_AUTH, "Show IPCP status", "show ipcp"}, {"lcp", NULL, ReportLcpStatus, LOCAL_AUTH, "Show LCP status", "show lcp"}, {"loopback", NULL, ShowLoopback, LOCAL_AUTH, "Show current loopback setting", "show loopback"}, {"log", NULL, ShowLogLevel, LOCAL_AUTH, "Show current log level", "show log"}, {"mem", NULL, ShowMemMap, LOCAL_AUTH, "Show memory map", "show mem"}, {"modem", NULL, ShowModemStatus, LOCAL_AUTH, "Show modem setups", "show modem"}, {"mru", NULL, ShowInitialMRU, LOCAL_AUTH, "Show Initial MRU", "show mru"}, {"mtu", NULL, ShowPreferredMTU, LOCAL_AUTH, "Show Preferred MTU", "show mtu"}, {"ofilter", NULL, ShowOfilter, LOCAL_AUTH, "Show Output filters", "show ofilter option .."}, {"proto", NULL, ReportProtStatus, LOCAL_AUTH, "Show protocol summary", "show proto"}, {"reconnect", NULL, ShowReconnect, LOCAL_AUTH, "Show Reconnect timer,tries", "show reconnect"}, {"redial", NULL, ShowRedial, LOCAL_AUTH, "Show Redial timeout value", "show redial"}, {"route", NULL, ShowRoute, LOCAL_AUTH, "Show routing table", "show route"}, {"timeout", NULL, ShowTimeout, LOCAL_AUTH, "Show Idle timeout value", "show timeout"}, {"stopped", NULL, ShowStopped, LOCAL_AUTH, "Show STOPPED timeout value", "show stopped"}, #ifndef NOMSEXT {"msext", NULL, ShowMSExt, LOCAL_AUTH, "Show MS PPP extentions", "show msext"}, #endif {"version", NULL, ShowVersion, LOCAL_NO_AUTH | LOCAL_AUTH, "Show version string", "show version"}, {"help", "?", HelpCommand, LOCAL_NO_AUTH | LOCAL_AUTH, "Display this message", "show help|? [command]", (void *) ShowCommands}, {NULL, NULL, NULL}, }; struct cmdtab const * FindCommand(struct cmdtab const * cmds, char *str, int *pmatch) { int nmatch; int len; struct cmdtab const *found; found = NULL; len = strlen(str); nmatch = 0; while (cmds->func) { if (cmds->name && strncasecmp(str, cmds->name, len) == 0) { if (cmds->name[len] == '\0') { *pmatch = 1; return cmds; } nmatch++; found = cmds; } else if (cmds->alias && strncasecmp(str, cmds->alias, len) == 0) { if (cmds->alias[len] == '\0') { *pmatch = 1; return cmds; } nmatch++; found = cmds; } cmds++; } *pmatch = nmatch; return found; } int FindExec(struct cmdtab const * cmdlist, int argc, char **argv) { struct cmdtab const *cmd; int val = 1; int nmatch; cmd = FindCommand(cmdlist, *argv, &nmatch); if (nmatch > 1) LogPrintf(LogWARN, "%s: Ambiguous command\n", *argv); else if (cmd && (cmd->lauth & VarLocalAuth)) val = (cmd->func) (cmd, argc-1, argv+1, cmd->args); else LogPrintf(LogWARN, "%s: Invalid command\n", *argv); if (val == -1) LogPrintf(LogWARN, "Usage: %s\n", cmd->syntax); else if (val) LogPrintf(LogCOMMAND, "%s: Failed %d\n", *argv, val); return val; } int aft_cmd = 1; extern int TermMode; void Prompt() { char *pconnect, *pauth; if (!(mode & MODE_INTER) || !VarTerm || TermMode) return; if (!aft_cmd) fprintf(VarTerm, "\n"); else aft_cmd = 0; if (VarLocalAuth == LOCAL_AUTH) pauth = " ON "; else pauth = " on "; if (IpcpFsm.state == ST_OPENED && phase == PHASE_NETWORK) pconnect = "PPP"; else pconnect = "ppp"; fprintf(VarTerm, "%s%s%s> ", pconnect, pauth, VarShortHost); fflush(VarTerm); } void DecodeCommand(char *buff, int nb, int prompt) { char *vector[20]; char **argv; int argc; char *cp; if (nb > 0) { cp = buff + strcspn(buff, "\r\n"); if (cp) *cp = '\0'; argc = MakeArgs(buff, vector, VECSIZE(vector)); argv = vector; if (argc > 0) FindExec(Commands, argc, argv); } if (prompt) Prompt(); } static int ShowCommand(struct cmdtab const * list, int argc, char **argv) { if (argc > 0) FindExec(ShowCommands, argc, argv); else if (VarTerm) fprintf(VarTerm, "Use ``show ?'' to get a list.\n"); else LogPrintf(LogWARN, "show command must have arguments\n"); return 0; } static int TerminalCommand(struct cmdtab const * list, int argc, char **argv) { if (LcpFsm.state > ST_CLOSED) { if (VarTerm) fprintf(VarTerm, "LCP state is [%s]\n", StateNames[LcpFsm.state]); return 1; } if (!IsInteractive()) return (1); modem = OpenModem(mode); if (modem < 0) { if (VarTerm) fprintf(VarTerm, "Failed to open modem.\n"); return (1); } if (VarTerm) { fprintf(VarTerm, "Enter to terminal mode.\n"); fprintf(VarTerm, "Type `~?' for help.\n"); } TtyTermMode(); return (0); } static int QuitCommand(struct cmdtab const * list, int argc, char **argv) { FILE *oVarTerm; if (mode & (MODE_DIRECT | MODE_DEDICATED | MODE_AUTO)) { if (argc > 0 && !strcasecmp(*argv, "all") && (VarLocalAuth & LOCAL_AUTH)) { mode &= ~MODE_INTER; oVarTerm = VarTerm; VarTerm = 0; if (oVarTerm && oVarTerm != stdout) fclose(oVarTerm); Cleanup(EX_NORMAL); } else if (VarTerm) { LogPrintf(LogPHASE, "Client connection closed.\n"); VarLocalAuth = LOCAL_NO_AUTH; mode &= ~MODE_INTER; oVarTerm = VarTerm; VarTerm = 0; if (oVarTerm && oVarTerm != stdout) fclose(oVarTerm); close(netfd); netfd = -1; } } else Cleanup(EX_NORMAL); return 0; } static int CloseCommand(struct cmdtab const * list, int argc, char **argv) { reconnect(RECON_FALSE); LcpClose(); if (mode & MODE_BACKGROUND) Cleanup(EX_NORMAL); return 0; } static int DownCommand(struct cmdtab const * list, int argc, char **argv) { LcpDown(); return 0; } static int SetModemSpeed(struct cmdtab const * list, int argc, char **argv) { int speed; if (argc > 0) { if (strcmp(*argv, "sync") == 0) { VarSpeed = 0; return 0; } speed = atoi(*argv); if (IntToSpeed(speed) != B0) { VarSpeed = speed; return 0; } LogPrintf(LogWARN, "%s: Invalid speed\n", *argv); } return -1; } static int SetReconnect(struct cmdtab const * list, int argc, char **argv) { if (argc == 2) { VarReconnectTimer = atoi(argv[0]); VarReconnectTries = atoi(argv[1]); return 0; } return -1; } static int SetRedialTimeout(struct cmdtab const * list, int argc, char **argv) { int timeout; int tries; char *dot; if (argc == 1 || argc == 2) { if (strncasecmp(argv[0], "random", 6) == 0 && (argv[0][6] == '\0' || argv[0][6] == '.')) { VarRedialTimeout = -1; if (!randinit) { randinit = 1; srandomdev(); } } else { timeout = atoi(argv[0]); if (timeout >= 0) VarRedialTimeout = timeout; else { LogPrintf(LogWARN, "Invalid redial timeout\n"); return -1; } } dot = index(argv[0], '.'); if (dot) { if (strcasecmp(++dot, "random") == 0) { VarRedialNextTimeout = -1; if (!randinit) { randinit = 1; srandomdev(); } } else { timeout = atoi(dot); if (timeout >= 0) VarRedialNextTimeout = timeout; else { LogPrintf(LogWARN, "Invalid next redial timeout\n"); return -1; } } } else VarRedialNextTimeout = NEXT_REDIAL_PERIOD; /* Default next timeout */ if (argc == 2) { tries = atoi(argv[1]); if (tries >= 0) { VarDialTries = tries; } else { LogPrintf(LogWARN, "Invalid retry value\n"); return 1; } } return 0; } return -1; } static int SetStoppedTimeout(struct cmdtab const * list, int argc, char **argv) { LcpFsm.StoppedTimer.load = 0; IpcpFsm.StoppedTimer.load = 0; CcpFsm.StoppedTimer.load = 0; if (argc <= 3) { if (argc > 0) { LcpFsm.StoppedTimer.load = atoi(argv[0]) * SECTICKS; if (argc > 1) { IpcpFsm.StoppedTimer.load = atoi(argv[1]) * SECTICKS; if (argc > 2) CcpFsm.StoppedTimer.load = atoi(argv[2]) * SECTICKS; } } return 0; } return -1; } static int SetServer(struct cmdtab const * list, int argc, char **argv) { int res = -1; if (argc > 0 && argc < 3) if (strcasecmp(argv[0], "none") == 0) { ServerClose(); LogPrintf(LogPHASE, "Disabling server port.\n"); res = 0; } else if (*argv[0] == '/') { mode_t mask; umask(mask = umask(0)); if (argc == 2) { unsigned m; if (sscanf(argv[1], "%o", &m) == 1) mask = m; } res = ServerLocalOpen(argv[0], mask); } else { int port; if (strspn(argv[0], "0123456789") != strlen(argv[0])) { struct servent *s; if ((s = getservbyname(argv[0], "tcp")) == NULL) { port = 0; LogPrintf(LogWARN, "%s: Invalid port or service\n", argv[0]); } else port = ntohs(s->s_port); } else port = atoi(argv[0]); if (port) res = ServerTcpOpen(port); } return res; } static int SetModemParity(struct cmdtab const * list, int argc, char **argv) { return argc > 0 ? ChangeParity(*argv) : -1; } static int SetLogLevel(struct cmdtab const * list, int argc, char **argv) { int i; int res; char *arg; res = 0; if (argc == 0 || (argv[0][0] != '+' && argv[0][0] != '-')) LogDiscardAll(); while (argc--) { arg = **argv == '+' || **argv == '-' ? *argv + 1 : *argv; for (i = LogMIN; i <= LogMAX; i++) if (strcasecmp(arg, LogName(i)) == 0) { if (**argv == '-') LogDiscard(i); else LogKeep(i); break; } if (i > LogMAX) { LogPrintf(LogWARN, "%s: Invalid log value\n", arg); res = -1; } argv++; } return res; } static int SetEscape(struct cmdtab const * list, int argc, char **argv) { int code; for (code = 0; code < 33; code++) EscMap[code] = 0; while (argc-- > 0) { sscanf(*argv++, "%x", &code); code &= 0xff; EscMap[code >> 3] |= (1 << (code & 7)); EscMap[32] = 1; } return 0; } static int SetInitialMRU(struct cmdtab const * list, int argc, char **argv) { long mru; char *err; if (argc > 0) { mru = atol(*argv); if (mru < MIN_MRU) err = "Given MRU value (%ld) is too small.\n"; else if (mru > MAX_MRU) err = "Given MRU value (%ld) is too big.\n"; else { VarMRU = mru; return 0; } LogPrintf(LogWARN, err, mru); } return -1; } static int SetPreferredMTU(struct cmdtab const * list, int argc, char **argv) { long mtu; char *err; if (argc > 0) { mtu = atol(*argv); if (mtu == 0) { VarPrefMTU = 0; return 0; } else if (mtu < MIN_MTU) err = "Given MTU value (%ld) is too small.\n"; else if (mtu > MAX_MTU) err = "Given MTU value (%ld) is too big.\n"; else { VarPrefMTU = mtu; return 0; } LogPrintf(LogWARN, err, mtu); } return -1; } static int SetIdleTimeout(struct cmdtab const * list, int argc, char **argv) { if (argc-- > 0) { VarIdleTimeout = atoi(*argv++); UpdateIdleTimer(); /* If we're connected, restart the idle timer */ if (argc-- > 0) { VarLqrTimeout = atoi(*argv++); if (VarLqrTimeout < 1) VarLqrTimeout = 30; if (argc > 0) { VarRetryTimeout = atoi(*argv); if (VarRetryTimeout < 1 || VarRetryTimeout > 10) VarRetryTimeout = 3; } } return 0; } return -1; } struct in_addr GetIpAddr(char *cp) { struct hostent *hp; struct in_addr ipaddr; hp = gethostbyname(cp); if (hp && hp->h_addrtype == AF_INET) bcopy(hp->h_addr, &ipaddr, hp->h_length); else if (inet_aton(cp, &ipaddr) == 0) ipaddr.s_addr = 0; return (ipaddr); } static int SetInterfaceAddr(struct cmdtab const * list, int argc, char **argv) { DefMyAddress.ipaddr.s_addr = DefHisAddress.ipaddr.s_addr = 0L; if (argc > 4) return -1; HaveTriggerAddress = 0; ifnetmask.s_addr = 0; if (argc > 0) { if (ParseAddr(argc, argv++, &DefMyAddress.ipaddr, &DefMyAddress.mask, &DefMyAddress.width) == 0) return 1; if (--argc > 0) { if (ParseAddr(argc, argv++, &DefHisAddress.ipaddr, &DefHisAddress.mask, &DefHisAddress.width) == 0) return 2; if (--argc > 0) { ifnetmask = GetIpAddr(*argv); if (--argc > 0) { TriggerAddress = GetIpAddr(*argv); HaveTriggerAddress = 1; } } } } /* * For backwards compatibility, 0.0.0.0 means any address. */ if (DefMyAddress.ipaddr.s_addr == 0) { DefMyAddress.mask.s_addr = 0; DefMyAddress.width = 0; } if (DefHisAddress.ipaddr.s_addr == 0) { DefHisAddress.mask.s_addr = 0; DefHisAddress.width = 0; } IpcpInfo.want_ipaddr.s_addr = DefMyAddress.ipaddr.s_addr; IpcpInfo.his_ipaddr.s_addr = DefHisAddress.ipaddr.s_addr; if ((mode & MODE_AUTO) || ((mode & MODE_DEDICATED) && dstsystem)) { if (OsSetIpaddress(DefMyAddress.ipaddr, DefHisAddress.ipaddr, ifnetmask) < 0) return 4; } return 0; } #ifndef NOMSEXT void SetMSEXT(struct in_addr * pri_addr, struct in_addr * sec_addr, int argc, char **argv) { int dummyint; struct in_addr dummyaddr; pri_addr->s_addr = sec_addr->s_addr = 0L; if (argc > 0) { ParseAddr(argc, argv++, pri_addr, &dummyaddr, &dummyint); if (--argc > 0) ParseAddr(argc, argv++, sec_addr, &dummyaddr, &dummyint); else sec_addr->s_addr = pri_addr->s_addr; } /* * if the primary/secondary ns entries are 0.0.0.0 we should set them to * either the localhost's ip, or the values in /etc/resolv.conf ?? * * up to you if you want to implement this... */ } static int SetNS(struct cmdtab const * list, int argc, char **argv) { SetMSEXT(&ns_entries[0], &ns_entries[1], argc, argv); return 0; } static int SetNBNS(struct cmdtab const * list, int argc, char **argv) { SetMSEXT(&nbns_entries[0], &nbns_entries[1], argc, argv); return 0; } #endif /* MS_EXT */ #define VAR_AUTHKEY 0 #define VAR_DIAL 1 #define VAR_LOGIN 2 #define VAR_AUTHNAME 3 #define VAR_DEVICE 4 #define VAR_ACCMAP 5 #define VAR_PHONE 6 #define VAR_HANGUP 7 static int SetVariable(struct cmdtab const * list, int argc, char **argv, int param) { u_long map; char *arg; if (argc > 0) arg = *argv; else arg = ""; switch (param) { case VAR_AUTHKEY: strncpy(VarAuthKey, arg, sizeof(VarAuthKey) - 1); VarAuthKey[sizeof(VarAuthKey) - 1] = '\0'; break; case VAR_AUTHNAME: strncpy(VarAuthName, arg, sizeof(VarAuthName) - 1); VarAuthName[sizeof(VarAuthName) - 1] = '\0'; break; case VAR_DIAL: strncpy(VarDialScript, arg, sizeof(VarDialScript) - 1); VarDialScript[sizeof(VarDialScript) - 1] = '\0'; break; case VAR_LOGIN: strncpy(VarLoginScript, arg, sizeof(VarLoginScript) - 1); VarLoginScript[sizeof(VarLoginScript) - 1] = '\0'; break; case VAR_DEVICE: CloseModem(); strncpy(VarDevice, arg, sizeof(VarDevice) - 1); VarDevice[sizeof(VarDevice) - 1] = '\0'; VarBaseDevice = rindex(VarDevice, '/'); VarBaseDevice = VarBaseDevice ? VarBaseDevice + 1 : ""; break; case VAR_ACCMAP: sscanf(arg, "%lx", &map); VarAccmap = map; break; case VAR_PHONE: strncpy(VarPhoneList, arg, sizeof(VarPhoneList) - 1); VarPhoneList[sizeof(VarPhoneList) - 1] = '\0'; strcpy(VarPhoneCopy, VarPhoneList); VarNextPhone = VarPhoneCopy; break; case VAR_HANGUP: strncpy(VarHangupScript, arg, sizeof(VarHangupScript) - 1); VarHangupScript[sizeof(VarHangupScript) - 1] = '\0'; break; } return 0; } static int SetCtsRts(struct cmdtab const * list, int argc, char **argv) { if (argc > 0) { if (strcmp(*argv, "on") == 0) VarCtsRts = TRUE; else if (strcmp(*argv, "off") == 0) VarCtsRts = FALSE; else return -1; return 0; } return -1; } static int SetOpenMode(struct cmdtab const * list, int argc, char **argv) { if (argc > 0) { if (strcmp(*argv, "active") == 0) VarOpenMode = OPEN_ACTIVE; else if (strcmp(*argv, "passive") == 0) VarOpenMode = OPEN_PASSIVE; else return -1; return 0; } return -1; } extern int SetIfilter(), SetOfilter(), SetDfilter(), SetAfilter(); struct cmdtab const SetCommands[] = { {"accmap", NULL, SetVariable, LOCAL_AUTH, "Set accmap value", "set accmap hex-value", (void *) VAR_ACCMAP}, {"afilter", NULL, SetAfilter, LOCAL_AUTH, "Set keep Alive filter", "set afilter ..."}, {"authkey", "key", SetVariable, LOCAL_AUTH, "Set authentication key", "set authkey|key key", (void *) VAR_AUTHKEY}, {"authname", NULL, SetVariable, LOCAL_AUTH, "Set authentication name", "set authname name", (void *) VAR_AUTHNAME}, {"ctsrts", NULL, SetCtsRts, LOCAL_AUTH, "Use CTS/RTS modem signalling", "set ctsrts [on|off]"}, {"device", "line", SetVariable, LOCAL_AUTH, "Set modem device name", "set device|line device-name", (void *) VAR_DEVICE}, {"dfilter", NULL, SetDfilter, LOCAL_AUTH, "Set demand filter", "set dfilter ..."}, {"dial", NULL, SetVariable, LOCAL_AUTH, "Set dialing script", "set dial chat-script", (void *) VAR_DIAL}, {"escape", NULL, SetEscape, LOCAL_AUTH, "Set escape characters", "set escape hex-digit ..."}, {"hangup", NULL, SetVariable, LOCAL_AUTH, "Set hangup script", "set hangup chat-script", (void *) VAR_HANGUP}, {"ifaddr", NULL, SetInterfaceAddr, LOCAL_AUTH, "Set destination address", "set ifaddr [src-addr [dst-addr [netmask [trg-addr]]]]"}, {"ifilter", NULL, SetIfilter, LOCAL_AUTH, "Set input filter", "set ifilter ..."}, {"loopback", NULL, SetLoopback, LOCAL_AUTH, "Set loopback facility", "set loopback on|off"}, {"log", NULL, SetLogLevel, LOCAL_AUTH, "Set log level", "set log [+|-]value..."}, {"login", NULL, SetVariable, LOCAL_AUTH, "Set login script", "set login chat-script", (void *) VAR_LOGIN}, {"mru", NULL, SetInitialMRU, LOCAL_AUTH, "Set Initial MRU value", "set mru value"}, {"mtu", NULL, SetPreferredMTU, LOCAL_AUTH, "Set Preferred MTU value", "set mtu value"}, {"ofilter", NULL, SetOfilter, LOCAL_AUTH, "Set output filter", "set ofilter ..."}, {"openmode", NULL, SetOpenMode, LOCAL_AUTH, "Set open mode", "set openmode [active|passive]"}, {"parity", NULL, SetModemParity, LOCAL_AUTH, "Set modem parity", "set parity [odd|even|none]"}, {"phone", NULL, SetVariable, LOCAL_AUTH, "Set telephone number(s)", "set phone phone1[:phone2[...]]", (void *) VAR_PHONE}, {"reconnect", NULL, SetReconnect, LOCAL_AUTH, "Set Reconnect timeout", "set reconnect value ntries"}, {"redial", NULL, SetRedialTimeout, LOCAL_AUTH, "Set Redial timeout", "set redial value|random[.value|random] [dial_attempts]"}, {"stopped", NULL, SetStoppedTimeout, LOCAL_AUTH, "Set STOPPED timeouts", "set stopped [LCPseconds [IPCPseconds [CCPseconds]]]"}, {"server", "socket", SetServer, LOCAL_AUTH, "Set server port", "set server|socket TcpPort|LocalName|none [mask]"}, {"speed", NULL, SetModemSpeed, LOCAL_AUTH, "Set modem speed", "set speed value"}, {"timeout", NULL, SetIdleTimeout, LOCAL_AUTH, "Set Idle timeout", "set timeout value"}, #ifndef NOMSEXT {"ns", NULL, SetNS, LOCAL_AUTH, "Set NameServer", "set ns pri-addr [sec-addr]"}, {"nbns", NULL, SetNBNS, LOCAL_AUTH, "Set NetBIOS NameServer", "set nbns pri-addr [sec-addr]"}, #endif {"help", "?", HelpCommand, LOCAL_AUTH | LOCAL_NO_AUTH, "Display this message", "set help|? [command]", (void *) SetCommands}, {NULL, NULL, NULL}, }; static int SetCommand(struct cmdtab const * list, int argc, char **argv) { if (argc > 0) FindExec(SetCommands, argc, argv); else if (VarTerm) fprintf(VarTerm, "Use `set ?' to get a list or `set ? ' for" " syntax help.\n"); else LogPrintf(LogWARN, "set command must have arguments\n"); return 0; } static int AddCommand(struct cmdtab const * list, int argc, char **argv) { struct in_addr dest, gateway, netmask; if (argc == 3) { if (strcasecmp(argv[0], "MYADDR") == 0) dest = IpcpInfo.want_ipaddr; else dest = GetIpAddr(argv[0]); netmask = GetIpAddr(argv[1]); if (strcasecmp(argv[2], "HISADDR") == 0) gateway = IpcpInfo.his_ipaddr; else gateway = GetIpAddr(argv[2]); OsSetRoute(RTM_ADD, dest, gateway, netmask); return 0; } return -1; } static int DeleteCommand(struct cmdtab const * list, int argc, char **argv) { struct in_addr dest, gateway, netmask; if (argc == 1 && strcasecmp(argv[0], "all") == 0) DeleteIfRoutes(0); else if (argc > 0 && argc < 4) { if (strcasecmp(argv[0], "MYADDR") == 0) dest = IpcpInfo.want_ipaddr; else dest = GetIpAddr(argv[0]); netmask.s_addr = INADDR_ANY; if (argc > 1) { if (strcasecmp(argv[1], "HISADDR") == 0) gateway = IpcpInfo.his_ipaddr; else gateway = GetIpAddr(argv[1]); if (argc == 3) { if (inet_aton(argv[2], &netmask) == 0) { LogPrintf(LogWARN, "Bad netmask value.\n"); return -1; } } } else gateway.s_addr = INADDR_ANY; OsSetRoute(RTM_DELETE, dest, gateway, netmask); } else return -1; return 0; } static int AliasEnable(); static int AliasOption(); static struct cmdtab const AliasCommands[] = { {"enable", NULL, AliasEnable, LOCAL_AUTH, "enable IP aliasing", "alias enable [yes|no]"}, {"port", NULL, AliasRedirectPort, LOCAL_AUTH, "port redirection", "alias port [proto addr_local:port_local port_alias]"}, {"addr", NULL, AliasRedirectAddr, LOCAL_AUTH, "static address translation", "alias addr [addr_local addr_alias]"}, {"deny_incoming", NULL, AliasOption, LOCAL_AUTH, "stop incoming connections", "alias deny_incoming [yes|no]", (void *) PKT_ALIAS_DENY_INCOMING}, {"log", NULL, AliasOption, LOCAL_AUTH, "log aliasing link creation", "alias log [yes|no]", (void *) PKT_ALIAS_LOG}, {"same_ports", NULL, AliasOption, LOCAL_AUTH, "try to leave port numbers unchanged", "alias same_ports [yes|no]", (void *) PKT_ALIAS_SAME_PORTS}, {"use_sockets", NULL, AliasOption, LOCAL_AUTH, "allocate host sockets", "alias use_sockets [yes|no]", (void *) PKT_ALIAS_USE_SOCKETS}, {"unregistered_only", NULL, AliasOption, LOCAL_AUTH, "alias unregistered (private) IP address space only", "alias unregistered_only [yes|no]", (void *) PKT_ALIAS_UNREGISTERED_ONLY}, {"help", "?", HelpCommand, LOCAL_AUTH | LOCAL_NO_AUTH, "Display this message", "alias help|? [command]", (void *) AliasCommands}, {NULL, NULL, NULL}, }; static int AliasCommand(struct cmdtab const * list, int argc, char **argv) { if (argc > 0) FindExec(AliasCommands, argc, argv); else if (VarTerm) fprintf(VarTerm, "Use `alias help' to get a list or `alias help