/* * 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 1.131.2.32 1998/03/09 19:24:53 brian Exp $ * */ #include #include #include #include #include #include #include #include #ifndef NOALIAS #include #endif #include #include #include #include #include #include #include #include #include #include #include #include #include "command.h" #include "mbuf.h" #include "log.h" #include "defs.h" #include "timer.h" #include "fsm.h" #include "lcp.h" #include "iplist.h" #include "throughput.h" #include "ipcp.h" #include "modem.h" #include "filter.h" #ifndef NOALIAS #include "alias_cmd.h" #endif #include "hdlc.h" #include "loadalias.h" #include "vars.h" #include "systems.h" #include "bundle.h" #include "main.h" #include "route.h" #include "ccp.h" #include "ip.h" #include "slcompress.h" #include "auth.h" #include "async.h" #include "link.h" #include "descriptor.h" #include "physical.h" #include "server.h" #include "prompt.h" #include "chat.h" #include "chap.h" #include "datalink.h" struct in_addr ifnetmask; static const char *HIDDEN = "********"; static int ShowCommand(struct cmdargs const *); static int TerminalCommand(struct cmdargs const *); static int QuitCommand(struct cmdargs const *); static int CloseCommand(struct cmdargs const *); static int DialCommand(struct cmdargs const *); static int DownCommand(struct cmdargs const *); static int AllowCommand(struct cmdargs const *); static int SetCommand(struct cmdargs const *); static int LinkCommand(struct cmdargs const *); static int AddCommand(struct cmdargs const *); static int DeleteCommand(struct cmdargs const *); static int BgShellCommand(struct cmdargs const *); static int FgShellCommand(struct cmdargs const *); #ifndef NOALIAS static int AliasCommand(struct cmdargs const *); static int AliasEnable(struct cmdargs const *); static int AliasOption(struct cmdargs const *); #endif static int HelpCommand(struct cmdargs const *arg) { struct cmdtab const *cmd; int n, cmax, dmax, cols; if (arg->argc > 0) { for (cmd = arg->cmdtab; cmd->name; cmd++) if (strcasecmp(cmd->name, *arg->argv) == 0 && (cmd->lauth & VarLocalAuth)) { prompt_Printf(&prompt, "%s\n", cmd->syntax); return 0; } return -1; } cmax = dmax = 0; for (cmd = arg->cmdtab; cmd->func; cmd++) if (cmd->name && (cmd->lauth & VarLocalAuth)) { if ((n = strlen(cmd->name)) > cmax) cmax = n; if ((n = strlen(cmd->helpmes)) > dmax) dmax = n; } cols = 80 / (dmax + cmax + 3); n = 0; for (cmd = arg->cmdtab; cmd->func; cmd++) if (cmd->name && (cmd->lauth & VarLocalAuth)) { prompt_Printf(&prompt, " %-*.*s: %-*.*s", cmax, cmax, cmd->name, dmax, dmax, cmd->helpmes); if (++n % cols == 0) prompt_Printf(&prompt, "\n"); } if (n % cols != 0) prompt_Printf(&prompt, "\n"); return 0; } int IsInteractive(int Display) { const char *m = NULL; if (mode & MODE_DDIAL) m = "direct dial"; else if (mode & MODE_BACKGROUND) m = "background"; else if (mode & MODE_AUTO) m = "auto"; else if (mode & MODE_DIRECT) m = "direct"; else if (mode & MODE_DEDICATED) m = "dedicated"; else if (mode & MODE_INTER) m = "interactive"; if (m) { if (Display) prompt_Printf(&prompt, "Working in %s mode\n", m); } return mode & MODE_INTER; } static int DialCommand(struct cmdargs const *arg) { int res; if (LcpInfo.fsm.state > ST_CLOSED) { prompt_Printf(&prompt, "LCP state is [%s]\n", StateNames[LcpInfo.fsm.state]); return 0; } if ((mode & MODE_DAEMON) && !(mode & MODE_AUTO)) { LogPrintf(LogWARN, "Manual dial is only available in auto and interactive mode\n"); return 1; } if (arg->argc > 0 && (res = LoadCommand(arg)) != 0) return res; bundle_Open(arg->bundle, NULL); return 0; } static int SetLoopback(struct cmdargs const *arg) { if (arg->argc == 1) if (!strcasecmp(*arg->argv, "on")) { VarLoopback = 1; return 0; } else if (!strcasecmp(*arg->argv, "off")) { VarLoopback = 0; return 0; } return -1; } static int ShellCommand(struct cmdargs const *arg, int bg) { const char *shell; pid_t shpid; int argc; char *argv[MAXARGS]; #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 (prompt_Active(&prompt) && !(mode & MODE_INTER)) { LogPrintf(LogWARN, "Shell is not allowed interactively in auto mode\n"); return 1; } #endif if (arg->argc == 0) if (!(mode & MODE_INTER)) { if (prompt_Active(&prompt)) LogPrintf(LogWARN, "Can't start an interactive shell from" " a telnet session\n"); else 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; } if ((shell = getenv("SHELL")) == 0) shell = _PATH_BSHELL; if ((shpid = fork()) == 0) { int dtablesize, i, fd; TermTimerService(); signal(SIGINT, SIG_DFL); signal(SIGQUIT, SIG_DFL); signal(SIGTERM, SIG_DFL); signal(SIGHUP, SIG_DFL); signal(SIGALRM, SIG_DFL); if (prompt_Active(&prompt)) fd = prompt.fd_out; 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); for (dtablesize = getdtablesize(), i = 3; i < dtablesize; i++) close(i); prompt_TtyOldMode(&prompt); setuid(geteuid()); if (arg->argc > 0) { /* substitute pseudo args */ argv[0] = strdup(arg->argv[0]); for (argc = 1; argc < arg->argc; argc++) { if (strcasecmp(arg->argv[argc], "HISADDR") == 0) argv[argc] = strdup(inet_ntoa(IpcpInfo.peer_ip)); else if (strcasecmp(arg->argv[argc], "INTERFACE") == 0) argv[argc] = strdup(arg->bundle->ifname); else if (strcasecmp(arg->argv[argc], "MYADDR") == 0) argv[argc] = strdup(inet_ntoa(IpcpInfo.my_ip)); else argv[argc] = strdup(arg->argv[argc]); } argv[argc] = NULL; if (bg) { pid_t p; p = getpid(); if (daemon(1, 1) == -1) { LogPrintf(LogERROR, "%d: daemon: %s\n", p, strerror(errno)); exit(1); } } else if (prompt_Active(&prompt)) printf("ppp: Pausing until %s finishes\n", arg->argv[0]); execvp(argv[0], argv); } else { if (prompt_Active(&prompt)) printf("ppp: Pausing until %s finishes\n", shell); execl(shell, shell, NULL); } LogPrintf(LogWARN, "exec() of %s failed\n", arg->argc > 0 ? arg->argv[0] : shell); exit(255); } if (shpid == (pid_t) - 1) { LogPrintf(LogERROR, "Fork failed: %s\n", strerror(errno)); } else { int status; waitpid(shpid, &status, 0); } prompt_TtyCommandMode(&prompt); return (0); } static int BgShellCommand(struct cmdargs const *arg) { if (arg->argc == 0) return -1; return ShellCommand(arg, 1); } static int FgShellCommand(struct cmdargs const *arg) { return ShellCommand(arg, 0); } static 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", NULL}, {"add!", NULL, AddCommand, LOCAL_AUTH, "add or change route", "add! dest mask gateway", (void *)1}, {"allow", "auth", AllowCommand, LOCAL_AUTH, "Allow ppp access", "allow users|modes ...."}, {"bg", "!bg", BgShellCommand, LOCAL_AUTH, "Run a background command", "[!]bg command"}, {"close", NULL, CloseCommand, LOCAL_AUTH | LOCAL_CX_OPT, "Close connection", "close"}, {"delete", NULL, DeleteCommand, LOCAL_AUTH, "delete route", "delete dest", NULL}, {"delete!", NULL, DeleteCommand, LOCAL_AUTH, "delete a route if it exists", "delete! dest", (void *)1}, {"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"}, {"link", NULL, LinkCommand, LOCAL_AUTH, "Link specific commands", "link name command ..."}, {"load", NULL, LoadCommand, LOCAL_AUTH, "Load settings", "load [remote]"}, {"save", NULL, SaveCommand, LOCAL_AUTH, "Save settings", "save"}, {"set", "setup", SetCommand, LOCAL_AUTH | LOCAL_CX_OPT, "Set parameters", "set[up] var value"}, {"shell", "!", FgShellCommand, LOCAL_AUTH, "Run a subshell", "shell|! [sh command]"}, {"show", NULL, ShowCommand, LOCAL_AUTH, "Show status and stats", "show var"}, {"term", NULL, TerminalCommand, LOCAL_AUTH | LOCAL_CX, "Enter terminal mode", "term"}, #ifndef NOALIAS {"alias", NULL, AliasCommand, LOCAL_AUTH, "alias control", "alias option [yes|no]"}, #endif {"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]", Commands}, {NULL, "down", DownCommand, LOCAL_AUTH | LOCAL_CX, "Generate down event", "down"}, {NULL, NULL, NULL}, }; static int ShowLoopback(struct cmdargs const *arg) { prompt_Printf(&prompt, "Local loopback is %s\n", VarLoopback ? "on" : "off"); return 0; } static int ShowLogLevel(struct cmdargs const *arg) { int i; prompt_Printf(&prompt, "Log: "); for (i = LogMIN; i <= LogMAX; i++) if (LogIsKept(i) & LOG_KEPT_SYSLOG) prompt_Printf(&prompt, " %s", LogName(i)); prompt_Printf(&prompt, "\nLocal:"); for (i = LogMIN; i <= LogMAX; i++) if (LogIsKept(i) & LOG_KEPT_LOCAL) prompt_Printf(&prompt, " %s", LogName(i)); prompt_Printf(&prompt, "\n"); return 0; } static int ShowEscape(struct cmdargs const *arg) { if (arg->cx->physical->async.cfg.EscMap[32]) { int code, bit; char *sep = ""; for (code = 0; code < 32; code++) if (arg->cx->physical->async.cfg.EscMap[code]) for (bit = 0; bit < 8; bit++) if (arg->cx->physical->async.cfg.EscMap[code] & (1 << bit)) { prompt_Printf(&prompt, "%s0x%02x", sep, (code << 3) + bit); sep = ", "; } prompt_Printf(&prompt, "\n"); } return 0; } static int ShowTimeout(struct cmdargs const *arg) { int remaining; prompt_Printf(&prompt, " Idle Timer: %d secs LQR Timer: %d secs" " Retry Timer: %d secs\n", arg->bundle->cfg.idle_timeout, VarLqrTimeout, VarRetryTimeout); remaining = bundle_RemainingIdleTime(arg->bundle); if (remaining != -1) prompt_Printf(&prompt, " %d secs remaining\n", remaining); return 0; } static int ShowStopped(struct cmdargs const *arg) { prompt_Printf(&prompt, " Stopped Timer: LCP: "); if (!LcpInfo.fsm.StoppedTimer.load) prompt_Printf(&prompt, "Disabled"); else prompt_Printf(&prompt, "%ld secs", LcpInfo.fsm.StoppedTimer.load / SECTICKS); prompt_Printf(&prompt, ", CCP: "); if (!arg->cx->ccp.fsm.StoppedTimer.load) prompt_Printf(&prompt, "Disabled"); else prompt_Printf(&prompt, "%ld secs", arg->cx->ccp.fsm.StoppedTimer.load / SECTICKS); prompt_Printf(&prompt, "\n"); return 0; } static int ShowAuthKey(struct cmdargs const *arg) { prompt_Printf(&prompt, "AuthName = %s\n", VarAuthName); prompt_Printf(&prompt, "AuthKey = %s\n", HIDDEN); #ifdef HAVE_DES prompt_Printf(&prompt, "Encrypt = %s\n", VarMSChap ? "MSChap" : "MD5" ); #endif return 0; } static int ShowVersion(struct cmdargs const *arg) { prompt_Printf(&prompt, "%s - %s \n", VarVersion, VarLocalVersion); return 0; } static int ShowInitialMRU(struct cmdargs const *arg) { prompt_Printf(&prompt, " Initial MRU: %d\n", VarMRU); return 0; } static int ShowPreferredMTU(struct cmdargs const *arg) { if (VarPrefMTU) prompt_Printf(&prompt, " Preferred MTU: %d\n", VarPrefMTU); else prompt_Printf(&prompt, " Preferred MTU: unspecified\n"); return 0; } static int ShowReconnect(struct cmdargs const *arg) { prompt_Printf(&prompt, "%s: Reconnect Timer: %d, %d tries\n", arg->cx->name, arg->cx->cfg.reconnect_timeout, arg->cx->cfg.max_reconnect); return 0; } static int ShowRedial(struct cmdargs const *arg) { prompt_Printf(&prompt, " Redial Timer: "); if (arg->cx->cfg.dial_timeout >= 0) prompt_Printf(&prompt, " %d seconds, ", arg->cx->cfg.dial_timeout); else prompt_Printf(&prompt, " Random 0 - %d seconds, ", DIAL_TIMEOUT); prompt_Printf(&prompt, " Redial Next Timer: "); if (arg->cx->cfg.dial_next_timeout >= 0) prompt_Printf(&prompt, " %d seconds, ", arg->cx->cfg.dial_next_timeout); else prompt_Printf(&prompt, " Random 0 - %d seconds, ", DIAL_TIMEOUT); if (arg->cx->cfg.max_dial) prompt_Printf(&prompt, "%d dial tries", arg->cx->cfg.max_dial); prompt_Printf(&prompt, "\n"); return 0; } #ifndef NOMSEXT static int ShowMSExt(struct cmdargs const *arg) { prompt_Printf(&prompt, " MS PPP extention values \n"); prompt_Printf(&prompt, " Primary NS : %s\n", inet_ntoa(IpcpInfo.cfg.ns_entries[0])); prompt_Printf(&prompt, " Secondary NS : %s\n", inet_ntoa(IpcpInfo.cfg.ns_entries[1])); prompt_Printf(&prompt, " Primary NBNS : %s\n", inet_ntoa(IpcpInfo.cfg.nbns_entries[0])); prompt_Printf(&prompt, " Secondary NBNS : %s\n", inet_ntoa(IpcpInfo.cfg.nbns_entries[1])); return 0; } #endif static struct cmdtab const ShowCommands[] = { {"afilter", NULL, ShowAfilter, LOCAL_AUTH, "Show keep-alive filters", "show afilter option .."}, {"auth", NULL, ShowAuthKey, LOCAL_AUTH, "Show auth details", "show auth"}, {"ccp", NULL, ccp_ReportStatus, LOCAL_AUTH | LOCAL_CX_OPT, "Show CCP status", "show cpp"}, {"compress", NULL, ReportCompress, LOCAL_AUTH, "Show compression stats", "show compress"}, {"dfilter", NULL, ShowDfilter, LOCAL_AUTH, "Show Demand filters", "show dfilteroption .."}, {"escape", NULL, ShowEscape, LOCAL_AUTH | LOCAL_CX, "Show escape characters", "show escape"}, {"hdlc", NULL, hdlc_ReportStatus, LOCAL_AUTH | LOCAL_CX, "Show HDLC errors", "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"}, {"links", "link", bundle_ShowLinks, LOCAL_AUTH, "Show available link names", "show links"}, {"loopback", NULL, ShowLoopback, LOCAL_AUTH, "Show loopback setting", "show loopback"}, {"log", NULL, ShowLogLevel, LOCAL_AUTH, "Show log levels", "show log"}, {"mem", NULL, ShowMemMap, LOCAL_AUTH, "Show memory map", "show mem"}, {"modem", NULL, modem_ShowStatus, LOCAL_AUTH | LOCAL_CX, "Show modem setups", "show modem"}, {"mru", NULL, ShowInitialMRU, LOCAL_AUTH, "Show Initial MRU", "show mru"}, #ifndef NOMSEXT {"msext", NULL, ShowMSExt, LOCAL_AUTH, "Show MS PPP extentions", "show msext"}, #endif {"mtu", NULL, ShowPreferredMTU, LOCAL_AUTH, "Show Preferred MTU", "show mtu"}, {"ofilter", NULL, ShowOfilter, LOCAL_AUTH, "Show Output filters", "show ofilter option .."}, {"proto", NULL, Physical_ReportProtocolStatus, LOCAL_AUTH, "Show protocol summary", "show proto"}, {"reconnect", NULL, ShowReconnect, LOCAL_AUTH | LOCAL_CX, "Show reconnect timer", "show reconnect"}, {"redial", NULL, ShowRedial, LOCAL_AUTH | LOCAL_CX, "Show Redial timeout", "show redial"}, {"route", NULL, ShowRoute, LOCAL_AUTH, "Show routing table", "show route"}, {"timeout", NULL, ShowTimeout, LOCAL_AUTH, "Show Idle timeout", "show timeout"}, {"stopped", NULL, ShowStopped, LOCAL_AUTH | LOCAL_CX, "Show STOPPED timeout", "show stopped"}, {"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]", ShowCommands}, {NULL, NULL, NULL}, }; static struct cmdtab const * FindCommand(struct cmdtab const *cmds, const 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; } static int FindExec(struct bundle *bundle, struct cmdtab const *cmds, int argc, char const *const *argv, const char *prefix, struct datalink *cx) { struct cmdtab const *cmd; int val = 1; int nmatch; struct cmdargs arg; cmd = FindCommand(cmds, *argv, &nmatch); if (nmatch > 1) LogPrintf(LogWARN, "%s%s: Ambiguous command\n", prefix, *argv); else if (cmd && (cmd->lauth & VarLocalAuth)) { if ((cmd->lauth & LOCAL_CX) && !cx) /* We've got no context, but we require it */ cx = bundle2datalink(bundle, NULL); if ((cmd->lauth & LOCAL_CX) && !cx) LogPrintf(LogWARN, "%s%s: No context (use the `link' command)\n", prefix, *argv); else { if (cx && !(cmd->lauth & (LOCAL_CX|LOCAL_CX_OPT))) { LogPrintf(LogWARN, "%s%s: Redundant context (%s) ignored\n", prefix, *argv, cx->name); cx = NULL; } arg.cmdtab = cmds; arg.cmd = cmd; arg.argc = argc-1; arg.argv = argv+1; arg.bundle = bundle; arg.cx = cx; val = (cmd->func) (&arg); } } else LogPrintf(LogWARN, "%s%s: Invalid command\n", prefix, *argv); if (val == -1) LogPrintf(LogWARN, "Usage: %s\n", cmd->syntax); else if (val) LogPrintf(LogWARN, "%s%s: Failed %d\n", prefix, *argv, val); return val; } void InterpretCommand(char *buff, int nb, int *argc, char ***argv) { static char *vector[MAXARGS]; char *cp; if (nb > 0) { cp = buff + strcspn(buff, "\r\n"); if (cp) *cp = '\0'; *argc = MakeArgs(buff, vector, VECSIZE(vector)); *argv = vector; } else *argc = 0; } static int arghidden(int argc, char const *const *argv, int n) { /* Is arg n of the given command to be hidden from the log ? */ /* set authkey xxxxx */ /* set key xxxxx */ if (n == 2 && !strncasecmp(argv[0], "se", 2) && (!strncasecmp(argv[1], "authk", 5) || !strncasecmp(argv[1], "ke", 2))) return 1; /* passwd xxxxx */ if (n == 1 && !strncasecmp(argv[0], "p", 1)) return 1; return 0; } void RunCommand(struct bundle *bundle, int argc, char const *const *argv, const char *label) { if (argc > 0) { if (LogIsKept(LogCOMMAND)) { static char buf[LINE_LEN]; int f, n; *buf = '\0'; if (label) { strncpy(buf, label, sizeof buf - 3); buf[sizeof buf - 3] = '\0'; strcat(buf, ": "); } n = strlen(buf); for (f = 0; f < argc; f++) { if (n < sizeof buf - 1 && f) buf[n++] = ' '; if (arghidden(argc, argv, f)) strncpy(buf+n, HIDDEN, sizeof buf - n - 1); else strncpy(buf+n, argv[f], sizeof buf - n - 1); n += strlen(buf+n); } LogPrintf(LogCOMMAND, "%s\n", buf); } FindExec(bundle, Commands, argc, argv, "", NULL); } } void DecodeCommand(struct bundle *bundle, char *buff, int nb, const char *label) { int argc; char **argv; InterpretCommand(buff, nb, &argc, &argv); RunCommand(bundle, argc, (char const *const *)argv, label); } static int ShowCommand(struct cmdargs const *arg) { if (!prompt_Active(&prompt)) LogPrintf(LogWARN, "show: Cannot show without a prompt\n"); else if (arg->argc > 0) FindExec(arg->bundle, ShowCommands, arg->argc, arg->argv, "show ", arg->cx); else if (prompt_Active(&prompt)) prompt_Printf(&prompt, "Use ``show ?'' to get a list.\n"); else LogPrintf(LogWARN, "show command must have arguments\n"); return 0; } static int TerminalCommand(struct cmdargs const *arg) { if (LcpInfo.fsm.state > ST_CLOSED) { prompt_Printf(&prompt, "LCP state is [%s]\n", StateNames[LcpInfo.fsm.state]); return 1; } if (!IsInteractive(1)) return (1); datalink_Up(arg->cx, 0, 0); prompt_Printf(&prompt, "Entering terminal mode.\n"); prompt_Printf(&prompt, "Type `~?' for help.\n"); prompt_TtyTermMode(&prompt, arg->cx); return 0; } static int QuitCommand(struct cmdargs const *arg) { if (prompt_Active(&prompt)) { prompt_Drop(&prompt, 1); if ((mode & MODE_INTER) || (arg->argc > 0 && !strcasecmp(*arg->argv, "all") && (VarLocalAuth & LOCAL_AUTH))) Cleanup(EX_NORMAL); } return 0; } static int CloseCommand(struct cmdargs const *arg) { bundle_Close(LcpInfo.fsm.bundle, arg->cx ? arg->cx->name : NULL, 1); return 0; } static int DownCommand(struct cmdargs const *arg) { link_Close(&arg->cx->physical->link, arg->bundle, 0, 1); return 0; } static int SetModemSpeed(struct cmdargs const *arg) { long speed; char *end; if (arg->argc > 0 && **arg->argv) { if (arg->argc > 1) { LogPrintf(LogWARN, "SetModemSpeed: Too many arguments"); return -1; } if (strcasecmp(*arg->argv, "sync") == 0) { Physical_SetSync(arg->cx->physical); return 0; } end = NULL; speed = strtol(*arg->argv, &end, 10); if (*end) { LogPrintf(LogWARN, "SetModemSpeed: Bad argument \"%s\"", *arg->argv); return -1; } if (Physical_SetSpeed(arg->cx->physical, speed)) return 0; LogPrintf(LogWARN, "%s: Invalid speed\n", *arg->argv); } else LogPrintf(LogWARN, "SetModemSpeed: No speed specified\n"); return -1; } static int SetReconnect(struct cmdargs const *arg) { if (arg->argc == 2) { arg->cx->cfg.reconnect_timeout = atoi(arg->argv[0]); arg->cx->cfg.max_reconnect = (mode & MODE_DIRECT) ? 0 : atoi(arg->argv[1]); return 0; } return -1; } static int SetRedialTimeout(struct cmdargs const *arg) { int timeout; int tries; char *dot; if (arg->argc == 1 || arg->argc == 2) { if (strncasecmp(arg->argv[0], "random", 6) == 0 && (arg->argv[0][6] == '\0' || arg->argv[0][6] == '.')) { arg->cx->cfg.dial_timeout = -1; randinit(); } else { timeout = atoi(arg->argv[0]); if (timeout >= 0) arg->cx->cfg.dial_timeout = timeout; else { LogPrintf(LogWARN, "Invalid redial timeout\n"); return -1; } } dot = strchr(arg->argv[0], '.'); if (dot) { if (strcasecmp(++dot, "random") == 0) { arg->cx->cfg.dial_next_timeout = -1; randinit(); } else { timeout = atoi(dot); if (timeout >= 0) arg->cx->cfg.dial_next_timeout = timeout; else { LogPrintf(LogWARN, "Invalid next redial timeout\n"); return -1; } } } else /* Default next timeout */ arg->cx->cfg.dial_next_timeout = DIAL_NEXT_TIMEOUT; if (arg->argc == 2) { tries = atoi(arg->argv[1]); if (tries >= 0) { arg->cx->cfg.max_dial = tries; } else { LogPrintf(LogWARN, "Invalid retry value\n"); return 1; } } return 0; } return -1; } static int SetStoppedTimeout(struct cmdargs const *arg) { LcpInfo.fsm.StoppedTimer.load = 0; arg->cx->ccp.fsm.StoppedTimer.load = 0; if (arg->argc <= 2) { if (arg->argc > 0) { LcpInfo.fsm.StoppedTimer.load = atoi(arg->argv[0]) * SECTICKS; if (arg->argc > 1) arg->cx->ccp.fsm.StoppedTimer.load = atoi(arg->argv[1]) * SECTICKS; } return 0; } return -1; } #define ismask(x) \ (*x == '0' && strlen(x) == 4 && strspn(x+1, "0123456789.") == 3) static int SetServer(struct cmdargs const *arg) { int res = -1; if (arg->argc > 0 && arg->argc < 4) { const char *port, *passwd, *mask; /* What's what ? */ port = arg->argv[0]; if (arg->argc == 2) if (ismask(arg->argv[1])) { passwd = NULL; mask = arg->argv[1]; } else { passwd = arg->argv[1]; mask = NULL; } else if (arg->argc == 3) { passwd = arg->argv[1]; mask = arg->argv[2]; if (!ismask(mask)) return -1; } else passwd = mask = NULL; if (passwd == NULL) VarHaveLocalAuthKey = 0; else { strncpy(VarLocalAuthKey, passwd, sizeof VarLocalAuthKey - 1); VarLocalAuthKey[sizeof VarLocalAuthKey - 1] = '\0'; VarHaveLocalAuthKey = 1; } LocalAuthInit(); if (strcasecmp(port, "none") == 0) { if (mask != NULL || passwd != NULL) return -1; if (ServerClose()) LogPrintf(LogPHASE, "Disabled server port.\n"); res = 0; } else if (*port == '/') { mode_t imask; if (mask != NULL) { unsigned m; if (sscanf(mask, "%o", &m) == 1) imask = m; else return -1; } else imask = (mode_t)-1; res = ServerLocalOpen(port, imask); } else { int iport; if (mask != NULL) return -1; if (strspn(port, "0123456789") != strlen(port)) { struct servent *s; if ((s = getservbyname(port, "tcp")) == NULL) { iport = 0; LogPrintf(LogWARN, "%s: Invalid port or service\n", port); } else iport = ntohs(s->s_port); } else iport = atoi(port); res = iport ? ServerTcpOpen(iport) : -1; } } return res; } static int SetModemParity(struct cmdargs const *arg) { return arg->argc > 0 ? modem_SetParity(arg->cx->physical, *arg->argv) : -1; } static int SetLogLevel(struct cmdargs const *arg) { int i; int res; int argc; char const *const *argv, *argp; void (*Discard)(int), (*Keep)(int); void (*DiscardAll)(void); argc = arg->argc; argv = arg->argv; res = 0; if (argc == 0 || strcasecmp(argv[0], "local")) { Discard = LogDiscard; Keep = LogKeep; DiscardAll = LogDiscardAll; } else { argc--; argv++; Discard = LogDiscardLocal; Keep = LogKeepLocal; DiscardAll = LogDiscardAllLocal; } if (argc == 0 || (argv[0][0] != '+' && argv[0][0] != '-')) DiscardAll(); while (argc--) { argp = **argv == '+' || **argv == '-' ? *argv + 1 : *argv; for (i = LogMIN; i <= LogMAX; i++) if (strcasecmp(argp, LogName(i)) == 0) { if (**argv == '-') (*Discard)(i); else (*Keep)(i); break; } if (i > LogMAX) { LogPrintf(LogWARN, "%s: Invalid log value\n", argp); res = -1; } argv++; } return res; } static int SetEscape(struct cmdargs const *arg) { int code; int argc = arg->argc; char const *const *argv = arg->argv; for (code = 0; code < 33; code++) arg->cx->physical->async.cfg.EscMap[code] = 0; while (argc-- > 0) { sscanf(*argv++, "%x", &code); code &= 0xff; arg->cx->physical->async.cfg.EscMap[code >> 3] |= (1 << (code & 7)); arg->cx->physical->async.cfg.EscMap[32] = 1; } return 0; } static int SetInitialMRU(struct cmdargs const *arg) { long mru; const char *err; if (arg->argc > 0) { mru = atol(*arg->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 cmdargs const *arg) { long mtu; const char *err; if (arg->argc > 0) { mtu = atol(*arg->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 cmdargs const *arg) { if (arg->argc > 0) { bundle_SetIdleTimer(arg->bundle, atoi(arg->argv[0])); if (arg->argc > 1) { VarLqrTimeout = atoi(arg->argv[1]); if (VarLqrTimeout < 1) VarLqrTimeout = 30; if (arg->argc > 2) { VarRetryTimeout = atoi(arg->argv[2]); if (VarRetryTimeout < 1 || VarRetryTimeout > 10) VarRetryTimeout = 3; } } return 0; } return -1; } static struct in_addr GetIpAddr(const char *cp) { struct hostent *hp; struct in_addr ipaddr; if (inet_aton(cp, &ipaddr) == 0) { hp = gethostbyname(cp); if (hp && hp->h_addrtype == AF_INET) memcpy(&ipaddr, hp->h_addr, hp->h_length); else ipaddr.s_addr = 0; } return (ipaddr); } static int SetInterfaceAddr(struct cmdargs const *arg) { const char *hisaddr; hisaddr = NULL; IpcpInfo.cfg.my_range.ipaddr.s_addr = INADDR_ANY; IpcpInfo.cfg.peer_range.ipaddr.s_addr = INADDR_ANY; if (arg->argc > 4) return -1; IpcpInfo.cfg.HaveTriggerAddress = 0; ifnetmask.s_addr = 0; iplist_reset(&IpcpInfo.cfg.peer_list); if (arg->argc > 0) { if (!ParseAddr(arg->argc, arg->argv, &IpcpInfo.cfg.my_range.ipaddr, &IpcpInfo.cfg.my_range.mask, &IpcpInfo.cfg.my_range.width)) return 1; if (arg->argc > 1) { hisaddr = arg->argv[1]; if (arg->argc > 2) { ifnetmask = GetIpAddr(arg->argv[2]); if (arg->argc > 3) { IpcpInfo.cfg.TriggerAddress = GetIpAddr(arg->argv[3]); IpcpInfo.cfg.HaveTriggerAddress = 1; } } } } /* * For backwards compatibility, 0.0.0.0 means any address. */ if (IpcpInfo.cfg.my_range.ipaddr.s_addr == INADDR_ANY) { IpcpInfo.cfg.my_range.mask.s_addr = INADDR_ANY; IpcpInfo.cfg.my_range.width = 0; } IpcpInfo.my_ip.s_addr = IpcpInfo.cfg.my_range.ipaddr.s_addr; if (IpcpInfo.cfg.peer_range.ipaddr.s_addr == INADDR_ANY) { IpcpInfo.cfg.peer_range.mask.s_addr = INADDR_ANY; IpcpInfo.cfg.peer_range.width = 0; } if (hisaddr && !UseHisaddr(arg->bundle, hisaddr, mode & MODE_AUTO)) return 4; return 0; } #ifndef NOMSEXT static void SetMSEXT(struct in_addr * pri_addr, struct in_addr * sec_addr, int argc, char const *const *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 cmdargs const *arg) { SetMSEXT(&IpcpInfo.cfg.ns_entries[0], &IpcpInfo.cfg.ns_entries[1], arg->argc, arg->argv); return 0; } static int SetNBNS(struct cmdargs const *arg) { SetMSEXT(&IpcpInfo.cfg.nbns_entries[0], &IpcpInfo.cfg.nbns_entries[1], arg->argc, arg->argv); return 0; } #endif /* MS_EXT */ static int SetVariable(struct cmdargs const *arg) { u_long map; const char *argp; int param = (int)arg->cmd->args; struct datalink *cx = arg->cx; if (arg->argc > 0) argp = *arg->argv; else argp = ""; if ((arg->cmd->lauth & LOCAL_CX) && !cx) { LogPrintf(LogWARN, "set %s: No context (use the `link' command)\n", arg->cmd->name); return 1; } else if (cx && !(arg->cmd->lauth & (LOCAL_CX|LOCAL_CX_OPT))) { LogPrintf(LogWARN, "set %s: Redundant context (%s) ignored\n", arg->cmd->name, cx->name); cx = NULL; } switch (param) { case VAR_AUTHKEY: strncpy(VarAuthKey, argp, sizeof VarAuthKey - 1); VarAuthKey[sizeof VarAuthKey - 1] = '\0'; break; case VAR_AUTHNAME: strncpy(VarAuthName, argp, sizeof VarAuthName - 1); VarAuthName[sizeof VarAuthName - 1] = '\0'; break; case VAR_DIAL: if (!(mode & (MODE_DIRECT|MODE_DEDICATED))) { strncpy(cx->cfg.script.dial, argp, sizeof cx->cfg.script.dial - 1); cx->cfg.script.dial[sizeof cx->cfg.script.dial - 1] = '\0'; } break; case VAR_LOGIN: if (!(mode & (MODE_DIRECT|MODE_DEDICATED))) { strncpy(cx->cfg.script.login, argp, sizeof cx->cfg.script.login - 1); cx->cfg.script.login[sizeof cx->cfg.script.login - 1] = '\0'; } break; case VAR_DEVICE: Physical_SetDeviceList(cx->physical, argp); break; case VAR_ACCMAP: sscanf(argp, "%lx", &map); VarAccmap = map; break; case VAR_PHONE: strncpy(cx->cfg.phone.list, argp, sizeof cx->cfg.phone.list - 1); cx->cfg.phone.list[sizeof cx->cfg.phone.list - 1] = '\0'; break; case VAR_HANGUP: if (!(mode & (MODE_DIRECT|MODE_DEDICATED))) { strncpy(cx->cfg.script.hangup, argp, sizeof cx->cfg.script.hangup - 1); cx->cfg.script.hangup[sizeof cx->cfg.script.hangup - 1] = '\0'; } break; #ifdef HAVE_DES case VAR_ENC: VarMSChap = !strcasecmp(argp, "mschap"); break; #endif } return 0; } static int SetCtsRts(struct cmdargs const *arg) { if (arg->argc > 0) { if (arg->argc > 1) { LogPrintf(LogWARN, "SetCtsRts: Too many arguments\n"); return -1; } if (strcmp(*arg->argv, "on") == 0) Physical_SetRtsCts(bundle2physical(arg->bundle, NULL), 1); else if (strcmp(*arg->argv, "off") == 0) Physical_SetRtsCts(bundle2physical(arg->bundle, NULL), 0); else return -1; return 0; } return -1; } static int SetOpenMode(struct cmdargs const *arg) { if (arg->argc > 0) { if (strcasecmp(*arg->argv, "active") == 0) VarOpenMode = arg->argc > 1 ? atoi(arg->argv[1]) : 1; else if (strcasecmp(*arg->argv, "passive") == 0) VarOpenMode = OPEN_PASSIVE; else return -1; return 0; } return -1; } static struct cmdtab const SetCommands[] = { {"accmap", NULL, SetVariable, LOCAL_AUTH | LOCAL_CX, "Set accmap value", "set accmap hex-value", (const 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", (const void *) VAR_AUTHKEY}, {"authname", NULL, SetVariable, LOCAL_AUTH, "Set authentication name", "set authname name", (const void *) VAR_AUTHNAME}, {"ctsrts", NULL, SetCtsRts, LOCAL_AUTH | LOCAL_CX, "Use CTS/RTS modem signalling", "set ctsrts [on|off]"}, {"device", "line", SetVariable, LOCAL_AUTH | LOCAL_CX, "Set modem device name", "set device|line device-name[,device-name]", (const void *) VAR_DEVICE}, {"dfilter", NULL, SetDfilter, LOCAL_AUTH, "Set demand filter", "set dfilter ..."}, {"dial", NULL, SetVariable, LOCAL_AUTH | LOCAL_CX, "Set dialing script", "set dial chat-script", (const void *) VAR_DIAL}, #ifdef HAVE_DES {"encrypt", NULL, SetVariable, LOCAL_AUTH, "Set CHAP encryption algorithm", "set encrypt MSChap|MD5", (const void *) VAR_ENC}, #endif {"escape", NULL, SetEscape, LOCAL_AUTH | LOCAL_CX, "Set escape characters", "set escape hex-digit ..."}, {"hangup", NULL, SetVariable, LOCAL_AUTH | LOCAL_CX, "Set hangup script", "set hangup chat-script", (const 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 [local] [+|-]value..."}, {"login", NULL, SetVariable, LOCAL_AUTH | LOCAL_CX, "Set login script", "set login chat-script", (const 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"}, #ifndef NOMSEXT {"nbns", NULL, SetNBNS, LOCAL_AUTH, "Set NetBIOS NameServer", "set nbns pri-addr [sec-addr]"}, {"ns", NULL, SetNS, LOCAL_AUTH, "Set NameServer", "set ns pri-addr [sec-addr]"}, #endif {"ofilter", NULL, SetOfilter, LOCAL_AUTH, "Set output filter", "set ofilter ..."}, {"openmode", NULL, SetOpenMode, LOCAL_AUTH | LOCAL_CX, "Set open mode", "set openmode [active|passive]"}, {"parity", NULL, SetModemParity, LOCAL_AUTH | LOCAL_CX, "Set modem parity", "set parity [odd|even|none]"}, {"phone", NULL, SetVariable, LOCAL_AUTH | LOCAL_CX, "Set telephone number(s)", "set phone phone1[:phone2[...]]", (const void *) VAR_PHONE}, {"reconnect", NULL, SetReconnect, LOCAL_AUTH | LOCAL_CX, "Set Reconnect timeout", "set reconnect value ntries"}, {"redial", NULL, SetRedialTimeout, LOCAL_AUTH | LOCAL_CX, "Set Redial timeout", "set redial value|random[.value|random] [attempts]"}, {"stopped", NULL, SetStoppedTimeout, LOCAL_AUTH | LOCAL_CX, "Set STOPPED timeouts", "set stopped [LCPseconds [CCPseconds]]"}, {"server", "socket", SetServer, LOCAL_AUTH, "Set server port", "set server|socket TcpPort|LocalName|none [mask]"}, {"speed", NULL, SetModemSpeed, LOCAL_AUTH | LOCAL_CX, "Set modem speed", "set speed value"}, {"timeout", NULL, SetIdleTimeout, LOCAL_AUTH, "Set Idle timeout", "set timeout value"}, {"vj", NULL, SetInitVJ, LOCAL_AUTH, "Set vj values", "set vj slots|slotcomp"}, {"help", "?", HelpCommand, LOCAL_AUTH | LOCAL_NO_AUTH, "Display this message", "set help|? [command]", SetCommands}, {NULL, NULL, NULL}, }; static int SetCommand(struct cmdargs const *arg) { if (arg->argc > 0) FindExec(arg->bundle, SetCommands, arg->argc, arg->argv, "set ", arg->cx); else if (prompt_Active(&prompt)) prompt_Printf(&prompt, "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 cmdargs const *arg) { struct in_addr dest, gateway, netmask; int gw; if (arg->argc != 3 && arg->argc != 2) return -1; if (arg->argc == 2) if (strcasecmp(arg->argv[0], "default")) return -1; else { dest.s_addr = netmask.s_addr = INADDR_ANY; gw = 1; } else { if (strcasecmp(arg->argv[0], "MYADDR") == 0) dest = IpcpInfo.my_ip; else if (strcasecmp(arg->argv[0], "HISADDR") == 0) dest = IpcpInfo.peer_ip; else dest = GetIpAddr(arg->argv[0]); netmask = GetIpAddr(arg->argv[1]); gw = 2; } if (strcasecmp(arg->argv[gw], "HISADDR") == 0) gateway = IpcpInfo.peer_ip; else if (strcasecmp(arg->argv[gw], "INTERFACE") == 0) gateway.s_addr = INADDR_ANY; else gateway = GetIpAddr(arg->argv[gw]); bundle_SetRoute(arg->bundle, RTM_ADD, dest, gateway, netmask, arg->cmd->args ? 1 : 0); return 0; } static int DeleteCommand(struct cmdargs const *arg) { struct in_addr dest, none; if (arg->argc == 1) if(strcasecmp(arg->argv[0], "all") == 0) DeleteIfRoutes(arg->bundle, 0); else { if (strcasecmp(arg->argv[0], "MYADDR") == 0) dest = IpcpInfo.my_ip; else if (strcasecmp(arg->argv[0], "default") == 0) dest.s_addr = INADDR_ANY; else dest = GetIpAddr(arg->argv[0]); none.s_addr = INADDR_ANY; bundle_SetRoute(arg->bundle, RTM_DELETE, dest, none, none, arg->cmd->args ? 1 : 0); } else return -1; return 0; } #ifndef NOALIAS 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]", (const void *) PKT_ALIAS_DENY_INCOMING}, {"log", NULL, AliasOption, LOCAL_AUTH, "log aliasing link creation", "alias log [yes|no]", (const void *) PKT_ALIAS_LOG}, {"same_ports", NULL, AliasOption, LOCAL_AUTH, "try to leave port numbers unchanged", "alias same_ports [yes|no]", (const void *) PKT_ALIAS_SAME_PORTS}, {"use_sockets", NULL, AliasOption, LOCAL_AUTH, "allocate host sockets", "alias use_sockets [yes|no]", (const void *) PKT_ALIAS_USE_SOCKETS}, {"unregistered_only", NULL, AliasOption, LOCAL_AUTH, "alias unregistered (private) IP address space only", "alias unregistered_only [yes|no]", (const void *) PKT_ALIAS_UNREGISTERED_ONLY}, {"help", "?", HelpCommand, LOCAL_AUTH | LOCAL_NO_AUTH, "Display this message", "alias help|? [command]", AliasCommands}, {NULL, NULL, NULL}, }; static int AliasCommand(struct cmdargs const *arg) { if (arg->argc > 0) FindExec(arg->bundle, AliasCommands, arg->argc, arg->argv, "alias ", arg->cx); else if (prompt_Active(&prompt)) prompt_Printf(&prompt, "Use `alias help' to get a list or `alias help" "