/*
* OpenVPN -- An application to securely tunnel IP networks
* over a single UDP port, with support for SSL/TLS-based
* session authentication and key exchange,
* packet encryption, packet authentication, and
* packet compression.
*
* Copyright (C) 2002-2008 Telethra, Inc. <sales@openvpn.net>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation.
*
* 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 (see the file COPYING included with this
* distribution); if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
* 2004-01-28: Added Socks5 proxy support
* (Christof Meerwald, http://cmeerw.org)
*/
#include "syshead.h"
#include "buffer.h"
#include "error.h"
#include "common.h"
#include "shaper.h"
#include "crypto.h"
#include "ssl.h"
#include "options.h"
#include "misc.h"
#include "socket.h"
#include "packet_id.h"
#include "pkcs11.h"
#include "win32.h"
#include "push.h"
#include "pool.h"
#include "helper.h"
#include "manage.h"
#include "memdbg.h"
const char title_string[] =
PACKAGE_STRING
" " TARGET_ALIAS
#ifdef USE_CRYPTO
#ifdef USE_SSL
" [SSL]"
#else
" [CRYPTO]"
#endif
#endif
#ifdef USE_LZO
" [LZO" LZO_VERSION_NUM "]"
#endif
#if EPOLL
" [EPOLL]"
#endif
#ifdef PRODUCT_TAP_DEBUG
" [TAPDBG]"
#endif
#ifdef USE_PTHREAD
" [PTHREAD]"
#endif
#ifdef ENABLE_PKCS11
" [PKCS11]"
#endif
" built on " __DATE__
;
#ifndef ENABLE_SMALL
static const char usage_message[] =
"%s\n"
"\n"
"General Options:\n"
"--config file : Read configuration options from file.\n"
"--help : Show options.\n"
"--version : Show copyright and version information.\n"
"\n"
"Tunnel Options:\n"
"--local host : Local host name or ip address. Implies --bind.\n"
"--remote host [port] : Remote host name or ip address.\n"
"--remote-random : If multiple --remote options specified, choose one randomly.\n"
"--mode m : Major mode, m = 'p2p' (default, point-to-point) or 'server'.\n"
"--proto p : Use protocol p for communicating with peer.\n"
" p = udp (default), tcp-server, or tcp-client\n"
"--connect-retry n : For --proto tcp-client, number of seconds to wait\n"
" between connection retries (default=%d).\n"
"--connect-timeout n : For --proto tcp-client, connection timeout (in seconds).\n"
"--connect-retry-max n : Maximum connection attempt retries, default infinite.\n"
#ifdef GENERAL_PROXY_SUPPORT
"--auto-proxy : Try to sense proxy settings (or lack thereof) automatically.\n"
#endif
#ifdef ENABLE_HTTP_PROXY
"--http-proxy s p [up] [auth] : Connect to remote host\n"
" through an HTTP proxy at address s and port p.\n"
" If proxy authentication is required,\n"
" up is a file containing username/password on 2 lines, or\n"
" 'stdin' to prompt from console. Add auth='ntlm' if\n"
" the proxy requires NTLM authentication.\n"
"--http-proxy s p 'auto': Like the above directive, but automatically determine\n"
" auth method and query for username/password if needed.\n"
"--http-proxy-retry : Retry indefinitely on HTTP proxy errors.\n"
"--http-proxy-timeout n : Proxy timeout in seconds, default=5.\n"
"--http-proxy-option type [parm] : Set extended HTTP proxy options.\n"
" Repeat to set multiple options.\n"
" VERSION version (default=1.0)\n"
" AGENT user-agent\n"
#endif
#ifdef ENABLE_SOCKS
"--socks-proxy s [p]: Connect to remote host through a Socks5 proxy at address\n"
" s and port p (default port = 1080).\n"
"--socks-proxy-retry : Retry indefinitely on Socks proxy errors.\n"
#endif
"--resolv-retry n: If hostname resolve fails for --remote, retry\n"
" resolve for n seconds before failing (disabled by default).\n"
" Set n=\"infinite\" to retry indefinitely.\n"
"--float : Allow remote to change its IP address/port, such as through\n"
" DHCP (this is the default if --remote is not used).\n"
"--ipchange cmd : Execute shell command cmd on remote ip address initial\n"
" setting or change -- execute as: cmd ip-address port#\n"
"--port port : TCP/UDP port # for both local and remote.\n"
"--lport port : TCP/UDP port # for local (default=%d). Implies --bind.\n"
"--rport port : TCP/UDP port # for remote (default=%d).\n"
"--bind : Bind to local address and port. (This is the default unless\n"
" --proto tcp-client"
#ifdef ENABLE_HTTP_PROXY
" or --http-proxy"
#endif
#ifdef ENABLE_SOCKS
" or --socks-proxy"
#endif
" is used).\n"
"--nobind : Do not bind to local address and port.\n"
"--dev tunX|tapX : tun/tap device (X can be omitted for dynamic device.\n"
"--dev-type dt : Which device type are we using? (dt = tun or tap) Use\n"
" this option only if the tun/tap device used with --dev\n"
" does not begin with \"tun\" or \"tap\".\n"
"--dev-node node : Explicitly set the device node rather than using\n"
" /dev/net/tun, /dev/tun, /dev/tap, etc.\n"
"--lladdr hw : Set the link layer address of the tap device.\n"
"--topology t : Set --dev tun topology: 'net30', 'p2p', or 'subnet'.\n"
"--tun-ipv6 : Build tun link capable of forwarding IPv6 traffic.\n"
#ifdef CONFIG_FEATURE_IPROUTE
"--iproute cmd : Use this command instead of default " IPROUTE_PATH ".\n"
#endif
"--ifconfig l rn : TUN: configure device to use IP address l as a local\n"
" endpoint and rn as a remote endpoint. l & rn should be\n"
" swapped on the other peer. l & rn must be private\n"
" addresses outside of the subnets used by either peer.\n"
" TAP: configure device to use IP address l as a local\n"
" endpoint and rn as a subnet mask.\n"
"--ifconfig-noexec : Don't actually execute ifconfig/netsh command, instead\n"
" pass --ifconfig parms by environment to scripts.\n"
"--ifconfig-nowarn : Don't warn if the --ifconfig option on this side of the\n"
" connection doesn't match the remote side.\n"
"--route network [netmask] [gateway] [metric] :\n"
" Add route to routing table after connection\n"
" is established. Multiple routes can be specified.\n"
" netmask default: 255.255.255.255\n"
" gateway default: taken from --route-gateway or --ifconfig\n"
" Specify default by leaving blank or setting to \"nil\".\n"
"--route-gateway gw : Specify a default gateway for use with --route.\n"
"--route-metric m : Specify a default metric for use with --route.\n"
"--route-delay n [w] : Delay n seconds after connection initiation before\n"
" adding routes (may be 0). If not specified, routes will\n"
" be added immediately after tun/tap open. On Windows, wait\n"
" up to w seconds for TUN/TAP adapter to come up.\n"
"--route-up cmd : Execute shell cmd after routes are added.\n"
"--route-noexec : Don't add routes automatically. Instead pass routes to\n"
" --route-up script using environmental variables.\n"
"--route-nopull : When used with --client or --pull, accept options pushed\n"
" by server EXCEPT for routes.\n"
"--redirect-gateway [flags]: (Experimental) Automatically execute routing\n"
" commands to redirect all outgoing IP traffic through the\n"
" VPN. Add 'local' flag if both " PACKAGE_NAME " servers are directly\n"
" connected via a common subnet, such as with WiFi.\n"
" Add 'def1' flag to set default route using using 0.0.0.0/1\n"
" and 128.0.0.0/1 rather than 0.0.0.0/0. Add 'bypass-dhcp'\n"
" flag to add a direct route to DHCP server, bypassing tunnel.\n"
" Add 'bypass-dns' flag to similarly bypass tunnel for DNS.\n"
"--setenv name value : Set a custom environmental variable to pass to script.\n"
"--script-security level : 0 -- strictly no calling of external programs\n"
" 1 -- (default) only call built-ins such as ifconfig\n"
" 2 -- allow calling of built-ins and scripts\n"
" 3 -- allow password to be passed to scripts via env\n"
"--shaper n : Restrict output to peer to n bytes per second.\n"
"--keepalive n m : Helper option for setting timeouts in server mode. Send\n"
" ping once every n seconds, restart if ping not received\n"
" for m seconds.\n"
"--inactive n [bytes] : Exit after n seconds of activity on tun/tap device\n"
" produces a combined in/out byte count < bytes.\n"
"--ping-exit n : Exit if n seconds pass without reception of remote ping.\n"
"--ping-restart n: Restart if n seconds pass without reception of remote ping.\n"
"--ping-timer-rem: Run the --ping-exit/--ping-restart timer only if we have a\n"
" remote address.\n"
"--ping n : Ping remote once every n seconds over TCP/UDP port.\n"
#if ENABLE_IP_PKTINFO
"--multihome : Configure a multi-homed UDP server.\n"
#endif
"--fast-io : (experimental) Optimize TUN/TAP/UDP writes.\n"
"--remap-usr1 s : On SIGUSR1 signals, remap signal (s='SIGHUP' or 'SIGTERM').\n"
"--persist-tun : Keep tun/tap device open across SIGUSR1 or --ping-restart.\n"
"--persist-remote-ip : Keep remote IP address across SIGUSR1 or --ping-restart.\n"
"--persist-local-ip : Keep local IP address across SIGUSR1 or --ping-restart.\n"
"--persist-key : Don't re-read key files across SIGUSR1 or --ping-restart.\n"
#if PASSTOS_CAPABILITY
"--passtos : TOS passthrough (applies to IPv4 only).\n"
#endif
"--tun-mtu n : Take the tun/tap device MTU to be n and derive the\n"
" TCP/UDP MTU from it (default=%d).\n"
"--tun-mtu-extra n : Assume that tun/tap device might return as many\n"
" as n bytes more than the tun-mtu size on read\n"
" (default TUN=0 TAP=%d).\n"
"--link-mtu n : Take the TCP/UDP device MTU to be n and derive the tun MTU\n"
" from it.\n"
"--mtu-disc type : Should we do Path MTU discovery on TCP/UDP channel?\n"
" 'no' -- Never send DF (Don't Fragment) frames\n"
" 'maybe' -- Use per-route hints\n"
" 'yes' -- Always DF (Don't Fragment)\n"
#ifdef ENABLE_OCC
"--mtu-test : Empirically measure and report MTU.\n"
#endif
#ifdef ENABLE_FRAGMENT
"--fragment max : Enable internal datagram fragmentation so that no UDP\n"
" datagrams are sent which are larger than max bytes.\n"
" Adds 4 bytes of overhead per datagram.\n"
#endif
"--mssfix [n] : Set upper bound on TCP MSS, default = tun-mtu size\n"
" or --fragment max value, whichever is lower.\n"
"--sndbuf size : Set the TCP/UDP send buffer size.\n"
"--rcvbuf size : Set the TCP/UDP receive buffer size.\n"
"--txqueuelen n : Set the tun/tap TX queue length to n (Linux only).\n"
"--mlock : Disable Paging -- ensures key material and tunnel\n"
" data will never be written to disk.\n"
"--up cmd : Shell cmd to execute after successful tun device open.\n"
" Execute as: cmd tun/tap-dev tun-mtu link-mtu \\\n"
" ifconfig-local-ip ifconfig-remote-ip\n"
" (pre --user or --group UID/GID change)\n"
"--up-delay : Delay tun/tap open and possible --up script execution\n"
" until after TCP/UDP connection establishment with peer.\n"
"--down cmd : Shell cmd to run after tun device close.\n"
" (post --user/--group UID/GID change and/or --chroot)\n"
" (script parameters are same as --up option)\n"
"--down-pre : Call --down cmd/script before TUN/TAP close.\n"
"--up-restart : Run up/down scripts for all restarts including those\n"
" caused by --ping-restart or SIGUSR1\n"
"--user user : Set UID to user after initialization.\n"
"--group group : Set GID to group after initialization.\n"
"--chroot dir : Chroot to this directory after initialization.\n"
"--cd dir : Change to this directory before initialization.\n"
"--daemon [name] : Become a daemon after initialization.\n"
" The optional 'name' parameter will be passed\n"
" as the program name to the system logger.\n"
"--syslog [name] : Output to syslog, but do not become a daemon.\n"
" See --daemon above for a description of the 'name' parm.\n"
"--inetd [name] ['wait'|'nowait'] : Run as an inetd or xinetd server.\n"
" See --daemon above for a description of the 'name' parm.\n"
"--log file : Output log to file which is created/truncated on open.\n"
"--log-append file : Append log to file, or create file if nonexistent.\n"
"--suppress-timestamps : Don't log timestamps to stdout/stderr.\n"
"--writepid file : Write main process ID to file.\n"
"--nice n : Change process priority (>0 = lower, <0 = higher).\n"
#if 0
#ifdef USE_PTHREAD
"--nice-work n : Change thread priority of work thread. The work\n"
" thread is used for background processing such as\n"
" RSA key number crunching.\n"
#endif
#endif
"--echo [parms ...] : Echo parameters to log output.\n"
"--verb n : Set output verbosity to n (default=%d):\n"
" (Level 3 is recommended if you want a good summary\n"
" of what's happening without being swamped by output).\n"
" : 0 -- no output except fatal errors\n"
" : 1 -- startup info + connection initiated messages +\n"
" non-fatal encryption & net errors\n"
" : 2,3 -- show TLS negotiations & route info\n"
" : 4 -- show parameters\n"
" : 5 -- show 'RrWw' chars on console for each packet sent\n"
" and received from TCP/UDP (caps) or tun/tap (lc)\n"
" : 6 to 11 -- debug messages of increasing verbosity\n"
"--mute n : Log at most n consecutive messages in the same category.\n"
"--status file n : Write operational status to file every n seconds.\n"
"--status-version [n] : Choose the status file format version number.\n"
" Currently, n can be 1 or 2 (default=1).\n"
#ifdef ENABLE_OCC
"--disable-occ : Disable options consistency check between peers.\n"
#endif
#ifdef ENABLE_DEBUG
"--gremlin mask : Special stress testing mode (for debugging only).\n"
#endif
#ifdef USE_LZO
"--comp-lzo : Use fast LZO compression -- may add up to 1 byte per\n"
" packet for uncompressible data.\n"
"--comp-noadapt : Don't use adaptive compression when --comp-lzo\n"
" is specified.\n"
#endif
#ifdef ENABLE_MANAGEMENT
"--management ip port [pass] : Enable a TCP server on ip:port to handle\n"
" management functions. pass is a password file\n"
" or 'stdin' to prompt from console.\n"
"--management-client : Management interface will connect as a TCP client to\n"
" ip/port rather than listen as a TCP server.\n"
"--management-query-passwords : Query management channel for private key\n"
" and auth-user-pass passwords.\n"
"--management-hold : Start " PACKAGE_NAME " in a hibernating state, until a client\n"
" of the management interface explicitly starts it.\n"
"--management-signal : Issue SIGUSR1 when management disconnect event occurs.\n"
"--management-forget-disconnect : Forget passwords when management disconnect\n"
" event occurs.\n"
"--management-log-cache n : Cache n lines of log file history for usage\n"
" by the management channel.\n"
#ifdef MANAGEMENT_DEF_AUTH
"--management-client-auth : gives management interface client the responsibility\n"
" to authenticate clients after their client certificate\n"
" has been verified.\n"
#endif
#ifdef MANAGEMENT_PF
"--management-client-pf : management interface clients must specify a packet\n"
" filter file for each connecting client.\n"
#endif
#endif
#ifdef ENABLE_PLUGIN
"--plugin m [str]: Load plug-in module m passing str as an argument\n"
" to its initialization function.\n"
#endif
#if P2MP
#if P2MP_SERVER
"\n"
"Multi-Client Server options (when --mode server is used):\n"
"--server network netmask : Helper option to easily configure server mode.\n"
"--server-bridge IP netmask pool-start-IP pool-end-IP : Helper option to\n"
" easily configure ethernet bridging server mode.\n"
"--push \"option\" : Push a config file option back to the peer for remote\n"
" execution. Peer must specify --pull in its config file.\n"
"--push-reset : Don't inherit global push list for specific\n"
" client instance.\n"
"--ifconfig-pool start-IP end-IP [netmask] : Set aside a pool of subnets\n"
" to be dynamically allocated to connecting clients.\n"
"--ifconfig-pool-linear : Use individual addresses rather than /30 subnets\n"
" in tun mode. Not compatible with Windows clients.\n"
"--ifconfig-pool-persist file [seconds] : Persist/unpersist ifconfig-pool\n"
" data to file, at seconds intervals (default=600).\n"
" If seconds=0, file will be treated as read-only.\n"
"--ifconfig-push local remote-netmask : Push an ifconfig option to remote,\n"
" overrides --ifconfig-pool dynamic allocation.\n"
" Only valid in a client-specific config file.\n"
"--iroute network [netmask] : Route subnet to client.\n"
" Sets up internal routes only.\n"
" Only valid in a client-specific config file.\n"
"--disable : Client is disabled.\n"
" Only valid in a client-specific config file.\n"
"--client-cert-not-required : Don't require client certificate, client\n"
" will authenticate using username/password.\n"
"--username-as-common-name : For auth-user-pass authentication, use\n"
" the authenticated username as the common name,\n"
" rather than the common name from the client cert.\n"
"--auth-user-pass-verify cmd method: Query client for username/password and\n"
" run script cmd to verify. If method='via-env', pass\n"
" user/pass via environment, if method='via-file', pass\n"
" user/pass via temporary file.\n"
"--client-to-client : Internally route client-to-client traffic.\n"
"--duplicate-cn : Allow multiple clients with the same common name to\n"
" concurrently connect.\n"
"--client-connect cmd : Run script cmd on client connection.\n"
"--client-disconnect cmd : Run script cmd on client disconnection.\n"
"--client-config-dir dir : Directory for custom client config files.\n"
"--ccd-exclusive : Refuse connection unless custom client config is found.\n"
"--tmp-dir dir : Temporary directory, used for --client-connect return file.\n"
"--hash-size r v : Set the size of the real address hash table to r and the\n"
" virtual address table to v.\n"
"--bcast-buffers n : Allocate n broadcast buffers.\n"
"--tcp-queue-limit n : Maximum number of queued TCP output packets.\n"
"--learn-address cmd : Run script cmd to validate client virtual addresses.\n"
"--connect-freq n s : Allow a maximum of n new connections per s seconds.\n"
"--max-clients n : Allow a maximum of n simultaneously connected clients.\n"
"--max-routes-per-client n : Allow a maximum of n internal routes per client.\n"
#if PORT_SHARE
"--port-share host port : When run in TCP mode, proxy incoming HTTPS sessions\n"
" to a web server at host:port.\n"
#endif
#endif
"\n"
"Client options (when connecting to a multi-client server):\n"
"--client : Helper option to easily configure client mode.\n"
"--auth-user-pass [up] : Authenticate with server using username/password.\n"
" up is a file containing username/password on 2 lines,\n"
" or omit to prompt from console.\n"
"--pull : Accept certain config file options from the peer as if they\n"
" were part of the local config file. Must be specified\n"
" when connecting to a '--mode server' remote host.\n"
"--auth-retry t : How to handle auth failures. Set t to\n"
" none (default), interact, or nointeract.\n"
#endif
#ifdef ENABLE_OCC
"--explicit-exit-notify [n] : On exit/restart, send exit signal to\n"
" server/remote. n = # of retries, default=1.\n"
#endif
#ifdef USE_CRYPTO
"\n"
"Data Channel Encryption Options (must be compatible between peers):\n"
"(These options are meaningful for both Static Key & TLS-mode)\n"
"--secret f [d] : Enable Static Key encryption mode (non-TLS).\n"
" Use shared secret file f, generate with --genkey.\n"
" The optional d parameter controls key directionality.\n"
" If d is specified, use separate keys for each\n"
" direction, set d=0 on one side of the connection,\n"
" and d=1 on the other side.\n"
"--auth alg : Authenticate packets with HMAC using message\n"
" digest algorithm alg (default=%s).\n"
" (usually adds 16 or 20 bytes per packet)\n"
" Set alg=none to disable authentication.\n"
"--cipher alg : Encrypt packets with cipher algorithm alg\n"
" (default=%s).\n"
" Set alg=none to disable encryption.\n"
#ifdef HAVE_EVP_CIPHER_CTX_SET_KEY_LENGTH
"--keysize n : Size of cipher key in bits (optional).\n"
" If unspecified, defaults to cipher-specific default.\n"
#endif
"--engine [name] : Enable OpenSSL hardware crypto engine functionality.\n"
"--no-replay : Disable replay protection.\n"
"--mute-replay-warnings : Silence the output of replay warnings to log file.\n"
"--replay-window n [t] : Use a replay protection sliding window of size n\n"
" and a time window of t seconds.\n"
" Default n=%d t=%d\n"
"--no-iv : Disable cipher IV -- only allowed with CBC mode ciphers.\n"
"--replay-persist file : Persist replay-protection state across sessions\n"
" using file.\n"
"--test-crypto : Run a self-test of crypto features enabled.\n"
" For debugging only.\n"
#ifdef USE_SSL
"\n"
"TLS Key Negotiation Options:\n"
"(These options are meaningful only for TLS-mode)\n"
"--tls-server : Enable TLS and assume server role during TLS handshake.\n"
"--tls-client : Enable TLS and assume client role during TLS handshake.\n"
"--key-method m : Data channel key exchange method. m should be a method\n"
" number, such as 1 (default), 2, etc.\n"
"--ca file : Certificate authority file in .pem format containing\n"
" root certificate.\n"
"--capath dir : A directory of trusted certificates (CAs"
#if OPENSSL_VERSION_NUMBER >= 0x00907000L
" and CRLs).\n"
#else
").\n"
" WARNING: no support of CRL available with this version.\n"
#endif
"--dh file : File containing Diffie Hellman parameters\n"
" in .pem format (for --tls-server only).\n"
" Use \"openssl dhparam -out dh1024.pem 1024\" to generate.\n"
"--cert file : Local certificate in .pem format -- must be signed\n"
" by a Certificate Authority in --ca file.\n"
"--key file : Local private key in .pem format.\n"
"--pkcs12 file : PKCS#12 file containing local private key, local certificate\n"
" and optionally the root CA certificate.\n"
#ifdef WIN32
"--cryptoapicert select-string : Load the certificate and private key from the\n"
" Windows Certificate System Store.\n"
#endif
"--tls-cipher l : A list l of allowable TLS ciphers separated by : (optional).\n"
" : Use --show-tls to see a list of supported TLS ciphers.\n"
"--tls-timeout n : Packet retransmit timeout on TLS control channel\n"
" if no ACK from remote within n seconds (default=%d).\n"
"--reneg-bytes n : Renegotiate data chan. key after n bytes sent and recvd.\n"
"--reneg-pkts n : Renegotiate data chan. key after n packets sent and recvd.\n"
"--reneg-sec n : Renegotiate data chan. key after n seconds (default=%d).\n"
"--hand-window n : Data channel key exchange must finalize within n seconds\n"
" of handshake initiation by any peer (default=%d).\n"
"--tran-window n : Transition window -- old key can live this many seconds\n"
" after new key renegotiation begins (default=%d).\n"
"--single-session: Allow only one session (reset state on restart).\n"
"--tls-exit : Exit on TLS negotiation failure.\n"
"--tls-auth f [d]: Add an additional layer of authentication on top of the TLS\n"
" control channel to protect against DoS attacks.\n"
" f (required) is a shared-secret passphrase file.\n"
" The optional d parameter controls key directionality,\n"
" see --secret option for more info.\n"
"--askpass [file]: Get PEM password from controlling tty before we daemonize.\n"
"--auth-nocache : Don't cache --askpass or --auth-user-pass passwords.\n"
"--crl-verify crl: Check peer certificate against a CRL.\n"
"--tls-verify cmd: Execute shell command cmd to verify the X509 name of a\n"
" pending TLS connection that has otherwise passed all other\n"
" tests of certification. cmd should return 0 to allow\n"
" TLS handshake to proceed, or 1 to fail. (cmd is\n"
" executed as 'cmd certificate_depth X509_NAME_oneline')\n"
"--tls-remote x509name: Accept connections only from a host with X509 name\n"
" x509name. The remote host must also pass all other tests\n"
" of verification.\n"
"--ns-cert-type t: Require that peer certificate was signed with an explicit\n"
" nsCertType designation t = 'client' | 'server'.\n"
#if OPENSSL_VERSION_NUMBER >= 0x00907000L
"--remote-cert-ku v ... : Require that the peer certificate was signed with\n"
" explicit key usage, you can specify more than one value.\n"
" value should be given in hex format.\n"
"--remote-cert-eku oid : Require that the peer certificate was signed with\n"
" explicit extended key usage. Extended key usage can be encoded\n"
" as an object identifier or OpenSSL string representation.\n"
"--remote-cert-tls t: Require that peer certificate was signed with explicit\n"
" key usage and extended key usage based on RFC3280 TLS rules.\n"
" t = 'client' | 'server'.\n"
#endif /* OPENSSL_VERSION_NUMBER */
#endif /* USE_SSL */
#ifdef ENABLE_PKCS11
"\n"
"PKCS#11 Options:\n"
"--pkcs11-providers provider ... : PKCS#11 provider to load.\n"
"--pkcs11-protected-authentication [0|1] ... : Use PKCS#11 protected authentication\n"
" path. Set for each provider.\n"
"--pkcs11-private-mode hex ... : PKCS#11 private key mode mask.\n"
" 0 : Try to determind automatically (default).\n"
" 1 : Use Sign.\n"
" 2 : Use SignRecover.\n"
" 4 : Use Decrypt.\n"
" 8 : Use Unwrap.\n"
"--pkcs11-cert-private [0|1] ... : Set if login should be performed before\n"
" certificate can be accessed. Set for each provider.\n"
"--pkcs11-pin-cache seconds : Number of seconds to cache PIN. The default is -1\n"
" cache until token is removed.\n"
"--pkcs11-id-management : Acquire identity from management interface.\n"
"--pkcs11-id serialized-id 'id' : Identity to use, get using standalone --show-pkcs11-ids\n"
#endif /* ENABLE_PKCS11 */
"\n"
"SSL Library information:\n"
"--show-ciphers : Show cipher algorithms to use with --cipher option.\n"
"--show-digests : Show message digest algorithms to use with --auth option.\n"
"--show-engines : Show hardware crypto accelerator engines (if available).\n"
#ifdef USE_SSL
"--show-tls : Show all TLS ciphers (TLS used only as a control channel).\n"
#endif
#ifdef WIN32
"\n"
"Windows Specific:\n"
"--win-sys path|'env' : Pathname of Windows system directory, C:\\WINDOWS by default.\n"
" If specified as 'env', read the pathname from SystemRoot env var.\n"
"--ip-win32 method : When using --ifconfig on Windows, set TAP-Win32 adapter\n"
" IP address using method = manual, netsh, ipapi,\n"
" dynamic, or adaptive (default = adaptive).\n"
" Dynamic method allows two optional parameters:\n"
" offset: DHCP server address offset (> -256 and < 256).\n"
" If 0, use network address, if >0, take nth\n"
" address forward from network address, if <0,\n"
" take nth address backward from broadcast\n"
" address.\n"
" Default is 0.\n"
" lease-time: Lease time in seconds.\n"
" Default is one year.\n"
"--route-method : Which method to use for adding routes on Windows?\n"
" adaptive (default) -- Try ipapi then fall back to exe.\n"
" ipapi -- Use IP helper API.\n"
" exe -- Call the route.exe shell command.\n"
"--dhcp-option type [parm] : Set extended TAP-Win32 properties, must\n"
" be used with --ip-win32 dynamic. For options\n"
" which allow multiple addresses,\n"
" --dhcp-option must be repeated.\n"
" DOMAIN name : Set DNS suffix\n"
" DNS addr : Set domain name server address(es)\n"
" NTP : Set NTP server address(es)\n"
" NBDD : Set NBDD server address(es)\n"
" WINS addr : Set WINS server address(es)\n"
" NBT type : Set NetBIOS over TCP/IP Node type\n"
" 1: B, 2: P, 4: M, 8: H\n"
" NBS id : Set NetBIOS scope ID\n"
" DISABLE-NBT : Disable Netbios-over-TCP/IP.\n"
"--dhcp-renew : Ask Windows to renew the TAP adapter lease on startup.\n"
"--dhcp-pre-release : Ask Windows to release the previous TAP adapter lease on\n"
" startup.\n"
"--dhcp-release : Ask Windows to release the TAP adapter lease on shutdown.\n"
"--tap-sleep n : Sleep for n seconds after TAP adapter open before\n"
" attempting to set adapter properties.\n"
"--pause-exit : When run from a console window, pause before exiting.\n"
"--service ex [0|1] : For use when " PACKAGE_NAME " is being instantiated by a\n"
" service, and should not be used directly by end-users.\n"
" ex is the name of an event object which, when\n"
" signaled, will cause " PACKAGE_NAME " to exit. A second\n"
" optional parameter controls the initial state of ex.\n"
"--show-net-up : Show " PACKAGE_NAME "'s view of routing table and net adapter list\n"
" after TAP adapter is up and routes have been added.\n"
"Windows Standalone Options:\n"
"\n"
"--show-adapters : Show all TAP-Win32 adapters.\n"
"--show-net : Show " PACKAGE_NAME "'s view of routing table and net adapter list.\n"
"--show-valid-subnets : Show valid subnets for --dev tun emulation.\n"
"--allow-nonadmin [TAP-adapter] : Allow " PACKAGE_NAME " running without admin privileges\n"
" to access TAP adapter.\n"
#endif
"\n"
"Generate a random key (only for non-TLS static key encryption mode):\n"
"--genkey : Generate a random key to be used as a shared secret,\n"
" for use with the --secret option.\n"
"--secret file : Write key to file.\n"
#endif /* USE_CRYPTO */
#ifdef TUNSETPERSIST
"\n"
"Tun/tap config mode (available with linux 2.4+):\n"
"--mktun : Create a persistent tunnel.\n"
"--rmtun : Remove a persistent tunnel.\n"
"--dev tunX|tapX : tun/tap device\n"
"--dev-type dt : Device type. See tunnel options above for details.\n"
"--user user : User to set privilege to.\n"
"--group group : Group to set privilege to.\n"
#endif
#ifdef ENABLE_PKCS11
"\n"
"PKCS#11 standalone options:\n"
"--show-pkcs11-ids provider [cert_private] : Show PKCS#11 available ids.\n"
" --verb option can be added *BEFORE* this.\n"
#endif /* ENABLE_PKCS11 */
;
#endif /* !ENABLE_SMALL */
/*
* This is where the options defaults go.
* Any option not explicitly set here
* will be set to 0.
*/
void
init_options (struct options *o, const bool init_gc)
{
CLEAR (*o);
if (init_gc)
{
gc_init (&o->gc);
o->gc_owned = true;
}
o->mode = MODE_POINT_TO_POINT;
o->topology = TOP_NET30;
o->ce.proto = PROTO_UDPv4;
o->ce.connect_retry_seconds = 5;
o->ce.connect_timeout = 10;
o->ce.connect_retry_max = 0;
o->ce.local_port = o->ce.remote_port = OPENVPN_PORT;
o->verbosity = 1;
o->status_file_update_freq = 60;
o->status_file_version = 1;
o->ce.bind_local = true;
o->tun_mtu = TUN_MTU_DEFAULT;
o->link_mtu = LINK_MTU_DEFAULT;
o->mtu_discover_type = -1;
o->mssfix = MSSFIX_DEFAULT;
o->route_delay_window = 30;
o->resolve_retry_seconds = RESOLV_RETRY_INFINITE;
#ifdef ENABLE_OCC
o->occ = true;
#endif
#ifdef ENABLE_MANAGEMENT
o->management_log_history_cache = 250;
o->management_echo_buffer_size = 100;
o->management_state_buffer_size = 100;
#endif
#ifdef TUNSETPERSIST
o->persist_mode = 1;
#endif
#ifndef WIN32
o->rcvbuf = 65536;
o->sndbuf = 65536;
#endif
#ifdef TARGET_LINUX
o->tuntap_options.txqueuelen = 100;
#endif
#ifdef WIN32
#if 0
o->tuntap_options.ip_win32_type = IPW32_SET_ADAPTIVE;
#else
o->tuntap_options.ip_win32_type = IPW32_SET_DHCP_MASQ;
#endif
o->tuntap_options.dhcp_lease_time = 31536000; /* one year */
o->tuntap_options.dhcp_masq_offset = 0; /* use network address as internal DHCP server address */
o->route_method = ROUTE_METHOD_ADAPTIVE;
#endif
#ifdef USE_PTHREAD
o->n_threads = 1;
#endif
#if P2MP_SERVER
o->real_hash_size = 256;
o->virtual_hash_size = 256;
o->n_bcast_buf = 256;
o->tcp_queue_limit = 64;
o->max_clients = 1024;
o->max_routes_per_client = 256;
o->ifconfig_pool_persist_refresh_freq = 600;
#endif
#if P2MP
o->scheduled_exit_interval = 5;
#endif
#ifdef USE_CRYPTO
o->ciphername = "BF-CBC";
o->ciphername_defined = true;
o->authname = "SHA1";
o->authname_defined = true;
o->replay = true;
o->replay_window = DEFAULT_SEQ_BACKTRACK;
o->replay_time = DEFAULT_TIME_BACKTRACK;
o->use_iv = true;
o->key_direction = KEY_DIRECTION_BIDIRECTIONAL;
#ifdef USE_SSL
o->key_method = 2;
o->tls_timeout = 2;
o->renegotiate_seconds = 3600;
o->handshake_window = 60;
o->transition_window = 3600;
#endif
#endif
#ifdef ENABLE_PKCS11
o->pkcs11_pin_cache_period = -1;
#endif /* ENABLE_PKCS11 */
}
void
uninit_options (struct options *o)
{
if (o->gc_owned)
gc_free (&o->gc);
}
#ifdef ENABLE_DEBUG
#define SHOW_PARM(name, value, format) msg(D_SHOW_PARMS, " " #name " = " format, (value))
#define SHOW_STR(var) SHOW_PARM(var, (o->var ? o->var : "[UNDEF]"), "'%s'")
#define SHOW_INT(var) SHOW_PARM(var, o->var, "%d")
#define SHOW_UINT(var) SHOW_PARM(var, o->var, "%u")
#define SHOW_UNSIGNED(var) SHOW_PARM(var, o->var, "0x%08x")
#define SHOW_BOOL(var) SHOW_PARM(var, (o->var ? "ENABLED" : "DISABLED"), "%s");
#endif
void
setenv_connection_entry (struct env_set *es,
const struct connection_entry *e,
const int i)
{
setenv_str_i (es, "proto", proto2ascii (e->proto, false), i);
setenv_str_i (es, "local", e->local, i);
setenv_int_i (es, "local_port", e->local_port, i);
setenv_str_i (es, "remote", e->local, i);
setenv_int_i (es, "remote_port", e->local_port, i);
#ifdef ENABLE_HTTP_PROXY
if (e->http_proxy_options)
{
setenv_str_i (es, "http_proxy_server", e->http_proxy_options->server, i);
setenv_int_i (es, "http_proxy_port", e->http_proxy_options->port, i);
}
#endif
#ifdef ENABLE_SOCKS
if (e->socks_proxy_server)
{
setenv_str_i (es, "socks_proxy_server", e->socks_proxy_server, i);
setenv_int_i (es, "socks_proxy_port", e->socks_proxy_port, i);
}
#endif
}
void
setenv_settings (struct env_set *es, const struct options *o)
{
setenv_str (es, "config", o->config);
setenv_int (es, "verb", o->verbosity);
setenv_int (es, "daemon", o->daemon);
setenv_int (es, "daemon_log_redirect", o->log);
#ifdef ENABLE_CONNECTION
if (o->connection_list)
{
int i;
for (i = 0; i < o->connection_list->len; ++i)
setenv_connection_entry (es, o->connection_list->array[i], i+1);
}
else
#endif
setenv_connection_entry (es, &o->ce, 1);
}
static in_addr_t
get_ip_addr (const char *ip_string, int msglevel, bool *error)
{
unsigned int flags = GETADDR_HOST_ORDER;
bool succeeded = false;
in_addr_t ret;
if (msglevel & M_FATAL)
flags |= GETADDR_FATAL;
ret = getaddr (flags, ip_string, 0, &succeeded, NULL);
if (!succeeded && error)
*error = true;
return ret;
}
static char *
string_substitute (const char *src, int from, int to, struct gc_arena *gc)
{
char *ret = (char *) gc_malloc (strlen (src) + 1, true, gc);
char *dest = ret;
char c;
do
{
c = *src++;
if (c == from)
c = to;
*dest++ = c;
}
while (c);
return ret;
}
bool
is_persist_option (const struct options *o)
{
return o->persist_tun
|| o->persist_key
|| o->persist_local_ip
|| o->persist_remote_ip
#ifdef USE_PTHREAD
|| o->n_threads >= 2
#endif
;
}
bool
is_stateful_restart (const struct options *o)
{
return is_persist_option (o) || connection_list_defined (o);
}
#ifdef WIN32
#ifdef ENABLE_DEBUG
static void
show_dhcp_option_addrs (const char *name, const in_addr_t *array, int len)
{
struct gc_arena gc = gc_new ();
int i;
for (i = 0; i < len; ++i)
{
msg (D_SHOW_PARMS, " %s[%d] = %s",
name,
i,
print_in_addr_t (array[i], 0, &gc));
}
gc_free (&gc);
}
static void
show_tuntap_options (const struct tuntap_options *o)
{
SHOW_BOOL (ip_win32_defined);
SHOW_INT (ip_win32_type);
SHOW_INT (dhcp_masq_offset);
SHOW_INT (dhcp_lease_time);
SHOW_INT (tap_sleep);
SHOW_BOOL (dhcp_options);
SHOW_BOOL (dhcp_renew);
SHOW_BOOL (dhcp_pre_release);
SHOW_BOOL (dhcp_release);
SHOW_STR (domain);
SHOW_STR (netbios_scope);
SHOW_INT (netbios_node_type);
SHOW_BOOL (disable_nbt);
show_dhcp_option_addrs ("DNS", o->dns, o->dns_len);
show_dhcp_option_addrs ("WINS", o->wins, o->wins_len);
show_dhcp_option_addrs ("NTP", o->ntp, o->ntp_len);
show_dhcp_option_addrs ("NBDD", o->nbdd, o->nbdd_len);
}
#endif
static void
dhcp_option_address_parse (const char *name, const char *parm, in_addr_t *array, int *len, int msglevel)
{
if (*len >= N_DHCP_ADDR)
{
msg (msglevel, "--dhcp-option %s: maximum of %d %s servers can be specified",
name,
N_DHCP_ADDR,
name);
}
else
{
bool error = false;
const in_addr_t addr = get_ip_addr (parm, msglevel, &error);
if (!error)
array[(*len)++] = addr;
}
}
#endif
#if P2MP
#ifdef ENABLE_DEBUG
static void
show_p2mp_parms (const struct options *o)
{
struct gc_arena gc = gc_new ();
#if P2MP_SERVER
msg (D_SHOW_PARMS, " server_network = %s", print_in_addr_t (o->server_network, 0, &gc));
msg (D_SHOW_PARMS, " server_netmask = %s", print_in_addr_t (o->server_netmask, 0, &gc));
msg (D_SHOW_PARMS, " server_bridge_ip = %s", print_in_addr_t (o->server_bridge_ip, 0, &gc));
msg (D_SHOW_PARMS, " server_bridge_netmask = %s", print_in_addr_t (o->server_bridge_netmask, 0, &gc));
msg (D_SHOW_PARMS, " server_bridge_pool_start = %s", print_in_addr_t (o->server_bridge_pool_start, 0, &gc));
msg (D_SHOW_PARMS, " server_bridge_pool_end = %s", print_in_addr_t (o->server_bridge_pool_end, 0, &gc));
if (o->push_list)
{
const struct push_list *l = o->push_list;
const char *printable_push_list = l->options;
msg (D_SHOW_PARMS, " push_list = '%s'", printable_push_list);
}
SHOW_BOOL (ifconfig_pool_defined);
msg (D_SHOW_PARMS, " ifconfig_pool_start = %s", print_in_addr_t (o->ifconfig_pool_start, 0, &gc));
msg (D_SHOW_PARMS, " ifconfig_pool_end = %s", print_in_addr_t (o->ifconfig_pool_end, 0, &gc));
msg (D_SHOW_PARMS, " ifconfig_pool_netmask = %s", print_in_addr_t (o->ifconfig_pool_netmask, 0, &gc));
SHOW_STR (ifconfig_pool_persist_filename);
SHOW_INT (ifconfig_pool_persist_refresh_freq);
SHOW_INT (n_bcast_buf);
SHOW_INT (tcp_queue_limit);
SHOW_INT (real_hash_size);
SHOW_INT (virtual_hash_size);
SHOW_STR (client_connect_script);
SHOW_STR (learn_address_script);
SHOW_STR (client_disconnect_script);
SHOW_STR (client_config_dir);
SHOW_BOOL (ccd_exclusive);
SHOW_STR (tmp_dir);
SHOW_BOOL (push_ifconfig_defined);
msg (D_SHOW_PARMS, " push_ifconfig_local = %s", print_in_addr_t (o->push_ifconfig_local, 0, &gc));
msg (D_SHOW_PARMS, " push_ifconfig_remote_netmask = %s", print_in_addr_t (o->push_ifconfig_remote_netmask, 0, &gc));
SHOW_BOOL (enable_c2c);
SHOW_BOOL (duplicate_cn);
SHOW_INT (cf_max);
SHOW_INT (cf_per);
SHOW_INT (max_clients);
SHOW_INT (max_routes_per_client);
SHOW_BOOL (client_cert_not_required);
SHOW_BOOL (username_as_common_name)
SHOW_STR (auth_user_pass_verify_script);
SHOW_BOOL (auth_user_pass_verify_script_via_file);
#if PORT_SHARE
SHOW_STR (port_share_host);
SHOW_INT (port_share_port);
#endif
#endif /* P2MP_SERVER */
SHOW_BOOL (client);
SHOW_BOOL (pull);
SHOW_STR (auth_user_pass_file);
gc_free (&gc);
}
#endif /* ENABLE_DEBUG */
#if P2MP_SERVER
static void
option_iroute (struct options *o,
const char *network_str,
const char *netmask_str,
int msglevel)
{
struct iroute *ir;
ALLOC_OBJ_GC (ir, struct iroute, &o->gc);
ir->network = getaddr (GETADDR_HOST_ORDER, network_str, 0, NULL, NULL);
ir->netbits = -1;
if (netmask_str)
{
const in_addr_t netmask = getaddr (GETADDR_HOST_ORDER, netmask_str, 0, NULL, NULL);
if (!netmask_to_netbits (ir->network, netmask, &ir->netbits))
{
msg (msglevel, "in --iroute %s %s : Bad network/subnet specification",
network_str,
netmask_str);
return;
}
}
ir->next = o->iroutes;
o->iroutes = ir;
}
#endif /* P2MP_SERVER */
#endif /* P2MP */
#if defined(ENABLE_HTTP_PROXY) && defined(ENABLE_DEBUG)
static void
show_http_proxy_options (const struct http_proxy_options *o)
{
msg (D_SHOW_PARMS, "BEGIN http_proxy");
SHOW_STR (server);
SHOW_INT (port);
SHOW_STR (auth_method_string);
SHOW_STR (auth_file);
SHOW_BOOL (retry);
SHOW_INT (timeout);
SHOW_STR (http_version);
SHOW_STR (user_agent);
msg (D_SHOW_PARMS, "END http_proxy");
}
#endif
void
options_detach (struct options *o)
{
gc_detach (&o->gc);
o->routes = NULL;
#if P2MP_SERVER
if (o->push_list) /* clone push_list */
{
const struct push_list *old = o->push_list;
ALLOC_OBJ_GC (o->push_list, struct push_list, &o->gc);
strcpy (o->push_list->options, old->options);
}
#endif
}
void
rol_check_alloc (struct options *options)
{
if (!options->routes)
options->routes = new_route_option_list (&options->gc);
}
#ifdef ENABLE_DEBUG
static void
show_connection_entry (const struct connection_entry *o)
{
msg (D_SHOW_PARMS, " proto = %s", proto2ascii (o->proto, false));
SHOW_STR (local);
SHOW_INT (local_port);
SHOW_STR (remote);
SHOW_INT (remote_port);
SHOW_BOOL (remote_float);
SHOW_BOOL (bind_defined);
SHOW_BOOL (bind_local);
SHOW_INT (connect_retry_seconds);
SHOW_INT (connect_timeout);
SHOW_INT (connect_retry_max);
#ifdef ENABLE_HTTP_PROXY
if (o->http_proxy_options)
show_http_proxy_options (o->http_proxy_options);
#endif
#ifdef ENABLE_SOCKS
SHOW_STR (socks_proxy_server);
SHOW_INT (socks_proxy_port);
SHOW_BOOL (socks_proxy_retry);
#endif
}
static void
show_connection_entries (const struct options *o)
{
msg (D_SHOW_PARMS, "Connection profiles [default]:");
show_connection_entry (&o->ce);
#ifdef ENABLE_CONNECTION
if (o->connection_list)
{
const struct connection_list *l = o->connection_list;
int i;
for (i = 0; i < l->len; ++i)
{
msg (D_SHOW_PARMS, "Connection profiles [%d]:", i);
show_connection_entry (l->array[i]);
}
}
#endif
msg (D_SHOW_PARMS, "Connection profiles END");
}
#endif
void
show_settings (const struct options *o)
{
#ifdef ENABLE_DEBUG
msg (D_SHOW_PARMS, "Current Parameter Settings:");
SHOW_STR (config);
SHOW_INT (mode);
#ifdef TUNSETPERSIST
SHOW_BOOL (persist_config);
SHOW_INT (persist_mode);
#endif
#ifdef USE_CRYPTO
SHOW_BOOL (show_ciphers);
SHOW_BOOL (show_digests);
SHOW_BOOL (show_engines);
SHOW_BOOL (genkey);
#ifdef USE_SSL
SHOW_STR (key_pass_file);
SHOW_BOOL (show_tls_ciphers);
#endif
#endif
show_connection_entries (o);
SHOW_BOOL (remote_random);
SHOW_STR (ipchange);
SHOW_STR (dev);
SHOW_STR (dev_type);
SHOW_STR (dev_node);
SHOW_STR (lladdr);
SHOW_INT (topology);
SHOW_BOOL (tun_ipv6);
SHOW_STR (ifconfig_local);
SHOW_STR (ifconfig_remote_netmask);
SHOW_BOOL (ifconfig_noexec);
SHOW_BOOL (ifconfig_nowarn);
#ifdef HAVE_GETTIMEOFDAY
SHOW_INT (shaper);
#endif
SHOW_INT (tun_mtu);
SHOW_BOOL (tun_mtu_defined);
SHOW_INT (link_mtu);
SHOW_BOOL (link_mtu_defined);
SHOW_INT (tun_mtu_extra);
SHOW_BOOL (tun_mtu_extra_defined);
#ifdef ENABLE_FRAGMENT
SHOW_INT (fragment);
#endif
SHOW_INT (mtu_discover_type);
#ifdef ENABLE_OCC
SHOW_INT (mtu_test);
#endif
SHOW_BOOL (mlock);
SHOW_INT (keepalive_ping);
SHOW_INT (keepalive_timeout);
SHOW_INT (inactivity_timeout);
SHOW_INT (ping_send_timeout);
SHOW_INT (ping_rec_timeout);
SHOW_INT (ping_rec_timeout_action);
SHOW_BOOL (ping_timer_remote);
SHOW_INT (remap_sigusr1);
#ifdef ENABLE_OCC
SHOW_INT (explicit_exit_notification);
#endif
SHOW_BOOL (persist_tun);
SHOW_BOOL (persist_local_ip);
SHOW_BOOL (persist_remote_ip);
SHOW_BOOL (persist_key);
SHOW_INT (mssfix);
#if PASSTOS_CAPABILITY
SHOW_BOOL (passtos);
#endif
SHOW_INT (resolve_retry_seconds);
SHOW_STR (username);
SHOW_STR (groupname);
SHOW_STR (chroot_dir);
SHOW_STR (cd_dir);
SHOW_STR (writepid);
SHOW_STR (up_script);
SHOW_STR (down_script);
SHOW_BOOL (down_pre);
SHOW_BOOL (up_restart);
SHOW_BOOL (up_delay);
SHOW_BOOL (daemon);
SHOW_INT (inetd);
SHOW_BOOL (log);
SHOW_BOOL (suppress_timestamps);
SHOW_INT (nice);
SHOW_INT (verbosity);
SHOW_INT (mute);
#ifdef ENABLE_DEBUG
SHOW_INT (gremlin);
#endif
SHOW_STR (status_file);
SHOW_INT (status_file_version);
SHOW_INT (status_file_update_freq);
#ifdef ENABLE_OCC
SHOW_BOOL (occ);
#endif
SHOW_INT (rcvbuf);
SHOW_INT (sndbuf);
SHOW_INT (sockflags);
SHOW_BOOL (fast_io);
#ifdef USE_LZO
SHOW_INT (lzo);
#endif
SHOW_STR (route_script);
SHOW_STR (route_default_gateway);
SHOW_INT (route_default_metric);
SHOW_BOOL (route_noexec);
SHOW_INT (route_delay);
SHOW_INT (route_delay_window);
SHOW_BOOL (route_delay_defined);
SHOW_BOOL (route_nopull);
if (o->routes)
print_route_options (o->routes, D_SHOW_PARMS);
#ifdef ENABLE_MANAGEMENT
SHOW_STR (management_addr);
SHOW_INT (management_port);
SHOW_STR (management_user_pass);
SHOW_INT (management_log_history_cache);
SHOW_INT (management_echo_buffer_size);
SHOW_STR (management_write_peer_info_file);
SHOW_INT (management_flags);
#endif
#ifdef ENABLE_PLUGIN
if (o->plugin_list)
plugin_option_list_print (o->plugin_list, D_SHOW_PARMS);
#endif
#ifdef USE_CRYPTO
SHOW_STR (shared_secret_file);
SHOW_INT (key_direction);
SHOW_BOOL (ciphername_defined);
SHOW_STR (ciphername);
SHOW_BOOL (authname_defined);
SHOW_STR (authname);
SHOW_INT (keysize);
SHOW_BOOL (engine);
SHOW_BOOL (replay);
SHOW_BOOL (mute_replay_warnings);
SHOW_INT (replay_window);
SHOW_INT (replay_time);
SHOW_STR (packet_id_file);
SHOW_BOOL (use_iv);
SHOW_BOOL (test_crypto);
#ifdef USE_SSL
SHOW_BOOL (tls_server);
SHOW_BOOL (tls_client);
SHOW_INT (key_method);
SHOW_STR (ca_file);
SHOW_STR (ca_path);
SHOW_STR (dh_file);
SHOW_STR (cert_file);
SHOW_STR (priv_key_file);
SHOW_STR (pkcs12_file);
#ifdef WIN32
SHOW_STR (cryptoapi_cert);
#endif
SHOW_STR (cipher_list);
SHOW_STR (tls_verify);
SHOW_STR (tls_remote);
SHOW_STR (crl_file);
SHOW_INT (ns_cert_type);
{
int i;
for (i=0;i<MAX_PARMS;i++)
SHOW_INT (remote_cert_ku[i]);
}
SHOW_STR (remote_cert_eku);
SHOW_INT (tls_timeout);
SHOW_INT (renegotiate_bytes);
SHOW_INT (renegotiate_packets);
SHOW_INT (renegotiate_seconds);
SHOW_INT (handshake_window);
SHOW_INT (transition_window);
SHOW_BOOL (single_session);
SHOW_BOOL (tls_exit);
SHOW_STR (tls_auth_file);
#endif
#endif
#ifdef ENABLE_PKCS11
{
int i;
for (i=0;i<MAX_PARMS && o->pkcs11_providers[i] != NULL;i++)
SHOW_PARM (pkcs11_providers, o->pkcs11_providers[i], "%s");
}
{
int i;
for (i=0;i<MAX_PARMS;i++)
SHOW_PARM (pkcs11_protected_authentication, o->pkcs11_protected_authentication[i] ? "ENABLED" : "DISABLED", "%s");
}
{
int i;
for (i=0;i<MAX_PARMS;i++)
SHOW_PARM (pkcs11_private_mode, o->pkcs11_private_mode[i], "%08x");
}
{
int i;
for (i=0;i<MAX_PARMS;i++)
SHOW_PARM (pkcs11_cert_private, o->pkcs11_cert_private[i] ? "ENABLED" : "DISABLED", "%s");
}
SHOW_INT (pkcs11_pin_cache_period);
SHOW_STR (pkcs11_id);
SHOW_BOOL (pkcs11_id_management);
#endif /* ENABLE_PKCS11 */
#if P2MP
show_p2mp_parms (o);
#endif
#ifdef WIN32
SHOW_BOOL (show_net_up);
SHOW_INT (route_method);
show_tuntap_options (&o->tuntap_options);
#endif
#endif
}
#undef SHOW_PARM
#undef SHOW_STR
#undef SHOW_INT
#undef SHOW_BOOL
#ifdef ENABLE_HTTP_PROXY
struct http_proxy_options *
init_http_options_if_undefined (struct options *o)
{
if (!o->ce.http_proxy_options)
{
ALLOC_OBJ_CLEAR_GC (o->ce.http_proxy_options, struct http_proxy_options, &o->gc);
/* http proxy defaults */
o->ce.http_proxy_options->timeout = 5;
o->ce.http_proxy_options->http_version = "1.0";
}
return o->ce.http_proxy_options;
}
#endif
#if ENABLE_CONNECTION
static struct connection_list *
alloc_connection_list_if_undef (struct options *options)
{
if (!options->connection_list)
ALLOC_OBJ_CLEAR_GC (options->connection_list, struct connection_list, &options->gc);
return options->connection_list;
}
static struct connection_entry *
alloc_connection_entry (struct options *options, const int msglevel)
{
struct connection_list *l = alloc_connection_list_if_undef (options);
struct connection_entry *e;
if (l->len >= CONNECTION_LIST_SIZE)
{
msg (msglevel, "Maximum number of 'connection' options (%d) exceeded", CONNECTION_LIST_SIZE);
return NULL;
}
ALLOC_OBJ_GC (e, struct connection_entry, &options->gc);
l->array[l->len++] = e;
return e;
}
static struct remote_list *
alloc_remote_list_if_undef (struct options *options)
{
if (!options->remote_list)
ALLOC_OBJ_CLEAR_GC (options->remote_list, struct remote_list, &options->gc);
return options->remote_list;
}
static struct remote_entry *
alloc_remote_entry (struct options *options, const int msglevel)
{
struct remote_list *l = alloc_remote_list_if_undef (options);
struct remote_entry *e;
if (l->len >= CONNECTION_LIST_SIZE)
{
msg (msglevel, "Maximum number of 'remote' options (%d) exceeded", CONNECTION_LIST_SIZE);
return NULL;
}
ALLOC_OBJ_GC (e, struct remote_entry, &options->gc);
l->array[l->len++] = e;
return e;
}
#endif
void
connection_entry_load_re (struct connection_entry *ce, const struct remote_entry *re)
{
if (re->remote)
ce->remote = re->remote;
if (re->remote_port >= 0)
ce->remote_port = re->remote_port;
if (re->proto >= 0)
ce->proto = re->proto;
}
static void
options_postprocess_verify_ce (const struct options *options, const struct connection_entry *ce)
{
struct options defaults;
int dev = DEV_TYPE_UNDEF;
bool pull = false;
init_options (&defaults, true);
#ifdef USE_CRYPTO
if (options->test_crypto)
{
notnull (options->shared_secret_file, "key file (--secret)");
}
else
#endif
notnull (options->dev, "TUN/TAP device (--dev)");
/*
* Get tun/tap/null device type
*/
dev = dev_type_enum (options->dev, options->dev_type);
/*
* If "proto tcp" is specified, make sure we know whether it is
* tcp-client or tcp-server.
*/
if (ce->proto == PROTO_TCPv4)
msg (M_USAGE, "--proto tcp is ambiguous in this context. Please specify --proto tcp-server or --proto tcp-client");
/*
* Sanity check on daemon/inetd modes
*/
if (options->daemon && options->inetd)
msg (M_USAGE, "only one of --daemon or --inetd may be specified");
if (options->inetd && (ce->local || ce->remote))
msg (M_USAGE, "--local or --remote cannot be used with --inetd");
if (options->inetd && ce->proto == PROTO_TCPv4_CLIENT)
msg (M_USAGE, "--proto tcp-client cannot be used with --inetd");
if (options->inetd == INETD_NOWAIT && ce->proto != PROTO_TCPv4_SERVER)
msg (M_USAGE, "--inetd nowait can only be used with --proto tcp-server");
if (options->inetd == INETD_NOWAIT
#if defined(USE_CRYPTO) && defined(USE_SSL)
&& !(options->tls_server || options->tls_client)
#endif
)
msg (M_USAGE, "--inetd nowait can only be used in TLS mode");
if (options->inetd == INETD_NOWAIT && dev != DEV_TYPE_TAP)
msg (M_USAGE, "--inetd nowait only makes sense in --dev tap mode");
if (options->lladdr && dev != DEV_TYPE_TAP)
msg (M_USAGE, "--lladdr can only be used in --dev tap mode");
/*
* Sanity check on TCP mode options
*/
if (ce->connect_retry_defined && ce->proto != PROTO_TCPv4_CLIENT)
msg (M_USAGE, "--connect-retry doesn't make sense unless also used with --proto tcp-client");
if (ce->connect_timeout_defined && ce->proto != PROTO_TCPv4_CLIENT)
msg (M_USAGE, "--connect-timeout doesn't make sense unless also used with --proto tcp-client");
/*
* Sanity check on MTU parameters
*/
if (options->tun_mtu_defined && options->link_mtu_defined)
msg (M_USAGE, "only one of --tun-mtu or --link-mtu may be defined (note that --ifconfig implies --link-mtu %d)", LINK_MTU_DEFAULT);
#ifdef ENABLE_OCC
if (ce->proto != PROTO_UDPv4 && options->mtu_test)
msg (M_USAGE, "--mtu-test only makes sense with --proto udp");
#endif
/* will we be pulling options from server? */
#if P2MP
pull = options->pull;
#endif
/*
* Sanity check on --local, --remote, and --ifconfig
*/
if (string_defined_equal (ce->local, ce->remote)
&& ce->local_port == ce->remote_port)
msg (M_USAGE, "--remote and --local addresses are the same");
if (string_defined_equal (ce->remote, options->ifconfig_local)
|| string_defined_equal (ce->remote, options->ifconfig_remote_netmask))
msg (M_USAGE, "--local and --remote addresses must be distinct from --ifconfig addresses");
if (string_defined_equal (ce->local, options->ifconfig_local)
|| string_defined_equal (ce->local, options->ifconfig_remote_netmask))
msg (M_USAGE, "--local addresses must be distinct from --ifconfig addresses");
if (string_defined_equal (options->ifconfig_local, options->ifconfig_remote_netmask))
msg (M_USAGE, "local and remote/netmask --ifconfig addresses must be different");
if (ce->bind_defined && !ce->bind_local)
msg (M_USAGE, "--bind and --nobind can't be used together");
if (ce->local && !ce->bind_local)
msg (M_USAGE, "--local and --nobind don't make sense when used together");
if (ce->local_port_defined && !ce->bind_local)
msg (M_USAGE, "--lport and --nobind don't make sense when used together");
if (!ce->remote && !ce->bind_local)
msg (M_USAGE, "--nobind doesn't make sense unless used with --remote");
/*
* Check for consistency of management options
*/
#ifdef ENABLE_MANAGEMENT
if (!options->management_addr &&
(options->management_flags
|| options->management_write_peer_info_file
|| options->management_log_history_cache != defaults.management_log_history_cache))
msg (M_USAGE, "--management is not specified, however one or more options which modify the behavior of --management were specified");
#endif
/*
* Windows-specific options.
*/
#ifdef WIN32
if (dev == DEV_TYPE_TUN && !(pull || (options->ifconfig_local && options->ifconfig_remote_netmask)))
msg (M_USAGE, "On Windows, --ifconfig is required when --dev tun is used");
if ((options->tuntap_options.ip_win32_defined)
&& !(pull || (options->ifconfig_local && options->ifconfig_remote_netmask)))
msg (M_USAGE, "On Windows, --ip-win32 doesn't make sense unless --ifconfig is also used");
if (options->tuntap_options.dhcp_options
&& options->tuntap_options.ip_win32_type != IPW32_SET_DHCP_MASQ
&& options->tuntap_options.ip_win32_type != IPW32_SET_ADAPTIVE)
msg (M_USAGE, "--dhcp-options requires --ip-win32 dynamic or adaptive");
#endif
/*
* Check that protocol options make sense.
*/
#ifdef ENABLE_FRAGMENT
if (ce->proto != PROTO_UDPv4 && options->fragment)
msg (M_USAGE, "--fragment can only be used with --proto udp");
#endif
#ifdef ENABLE_OCC
if (ce->proto != PROTO_UDPv4 && options->explicit_exit_notification)
msg (M_USAGE, "--explicit-exit-notify can only be used with --proto udp");
#endif
if (!ce->remote && ce->proto == PROTO_TCPv4_CLIENT)
msg (M_USAGE, "--remote MUST be used in TCP Client mode");
#ifdef ENABLE_HTTP_PROXY
if ((ce->http_proxy_options || options->auto_proxy_info) && ce->proto != PROTO_TCPv4_CLIENT)
msg (M_USAGE, "--http-proxy or --auto-proxy MUST be used in TCP Client mode (i.e. --proto tcp-client)");
#endif
#if defined(ENABLE_HTTP_PROXY) && defined(ENABLE_SOCKS)
if (ce->http_proxy_options && ce->socks_proxy_server)
msg (M_USAGE, "--http-proxy can not be used together with --socks-proxy");
#endif
#ifdef ENABLE_SOCKS
if (ce->socks_proxy_server && ce->proto == PROTO_TCPv4_SERVER)
msg (M_USAGE, "--socks-proxy can not be used in TCP Server mode");
#endif
if (ce->proto == PROTO_TCPv4_SERVER && connection_list_defined (options))
msg (M_USAGE, "TCP server mode allows at most one --remote address");
#if P2MP_SERVER
/*
* Check consistency of --mode server options.
*/
if (options->mode == MODE_SERVER)
{
if (!(dev == DEV_TYPE_TUN || dev == DEV_TYPE_TAP))
msg (M_USAGE, "--mode server only works with --dev tun or --dev tap");
if (options->pull)
msg (M_USAGE, "--pull cannot be used with --mode server");
if (!(ce->proto == PROTO_UDPv4 || ce->proto == PROTO_TCPv4_SERVER))
msg (M_USAGE, "--mode server currently only supports --proto udp or --proto tcp-server");
#if PORT_SHARE
if ((options->port_share_host || options->port_share_port) && ce->proto != PROTO_TCPv4_SERVER)
msg (M_USAGE, "--port-share only works in TCP server mode (--proto tcp-server)");
#endif
if (!options->tls_server)
msg (M_USAGE, "--mode server requires --tls-server");
if (ce->remote)
msg (M_USAGE, "--remote cannot be used with --mode server");
if (!ce->bind_local)
msg (M_USAGE, "--nobind cannot be used with --mode server");
#ifdef ENABLE_HTTP_PROXY
if (ce->http_proxy_options)
msg (M_USAGE, "--http-proxy cannot be used with --mode server");
#endif
#ifdef ENABLE_SOCKS
if (ce->socks_proxy_server)
msg (M_USAGE, "--socks-proxy cannot be used with --mode server");
#endif
#ifdef ENABLE_CONNECTION
if (options->connection_list)
msg (M_USAGE, "<connection> cannot be used with --mode server");
#endif
if (options->tun_ipv6)
msg (M_USAGE, "--tun-ipv6 cannot be used with --mode server");
if (options->shaper)
msg (M_USAGE, "--shaper cannot be used with --mode server");
if (options->inetd)
msg (M_USAGE, "--inetd cannot be used with --mode server");
if (options->ipchange)
msg (M_USAGE, "--ipchange cannot be used with --mode server (use --client-connect instead)");
if (!(ce->proto == PROTO_UDPv4 || ce->proto == PROTO_TCPv4_SERVER))
msg (M_USAGE, "--mode server currently only supports --proto udp or --proto tcp-server");
if (ce->proto != PROTO_UDPv4 && (options->cf_max || options->cf_per))
msg (M_USAGE, "--connect-freq only works with --mode server --proto udp. Try --max-clients instead.");
if (!(dev == DEV_TYPE_TAP || (dev == DEV_TYPE_TUN && options->topology == TOP_SUBNET)) && options->ifconfig_pool_netmask)
msg (M_USAGE, "The third parameter to --ifconfig-pool (netmask) is only valid in --dev tap mode");
#ifdef ENABLE_OCC
if (options->explicit_exit_notification)
msg (M_USAGE, "--explicit-exit-notify cannot be used with --mode server");
#endif
if (options->routes && (options->routes->flags & RG_ENABLE))
msg (M_USAGE, "--redirect-gateway cannot be used with --mode server (however --push \"redirect-gateway\" is fine)");
if (options->route_delay_defined)
msg (M_USAGE, "--route-delay cannot be used with --mode server");
if (options->up_delay)
msg (M_USAGE, "--up-delay cannot be used with --mode server");
if (!options->ifconfig_pool_defined && options->ifconfig_pool_persist_filename)
msg (M_USAGE, "--ifconfig-pool-persist must be used with --ifconfig-pool");
if (options->auth_user_pass_file)
msg (M_USAGE, "--auth-user-pass cannot be used with --mode server (it should be used on the client side only)");
if (options->ccd_exclusive && !options->client_config_dir)
msg (M_USAGE, "--ccd-exclusive must be used with --client-config-dir");
if (options->key_method != 2)
msg (M_USAGE, "--mode server requires --key-method 2");
{
const bool ccnr = (options->auth_user_pass_verify_script
|| PLUGIN_OPTION_LIST (options)
|| MAN_CLIENT_AUTH_ENABLED (options));
const char *postfix = "must be used with --management-client-auth, an --auth-user-pass-verify script, or plugin";
if (options->client_cert_not_required && !ccnr)
msg (M_USAGE, "--client-cert-not-required %s", postfix);
if (options->username_as_common_name && !ccnr)
msg (M_USAGE, "--username-as-common-name %s", postfix);
}
}
else
{
/*
* When not in server mode, err if parameters are
* specified which require --mode server.
*/
if (options->ifconfig_pool_defined || options->ifconfig_pool_persist_filename)
msg (M_USAGE, "--ifconfig-pool/--ifconfig-pool-persist requires --mode server");
if (options->real_hash_size != defaults.real_hash_size
|| options->virtual_hash_size != defaults.virtual_hash_size)
msg (M_USAGE, "--hash-size requires --mode server");
if (options->learn_address_script)
msg (M_USAGE, "--learn-address requires --mode server");
if (options->client_connect_script)
msg (M_USAGE, "--client-connect requires --mode server");
if (options->client_disconnect_script)
msg (M_USAGE, "--client-disconnect requires --mode server");
if (options->tmp_dir)
msg (M_USAGE, "--tmp-dir requires --mode server");
if (options->client_config_dir || options->ccd_exclusive)
msg (M_USAGE, "--client-config-dir/--ccd-exclusive requires --mode server");
if (options->enable_c2c)
msg (M_USAGE, "--client-to-client requires --mode server");
if (options->duplicate_cn)
msg (M_USAGE, "--duplicate-cn requires --mode server");
if (options->cf_max || options->cf_per)
msg (M_USAGE, "--connect-freq requires --mode server");
if (options->client_cert_not_required)
msg (M_USAGE, "--client-cert-not-required requires --mode server");
if (options->username_as_common_name)
msg (M_USAGE, "--username-as-common-name requires --mode server");
if (options->auth_user_pass_verify_script)
msg (M_USAGE, "--auth-user-pass-verify requires --mode server");
#if PORT_SHARE
if (options->port_share_host || options->port_share_port)
msg (M_USAGE, "--port-share requires TCP server mode (--mode server --proto tcp-server)");
#endif
}
#endif /* P2MP_SERVER */
#ifdef USE_CRYPTO
/*
* Check consistency of replay options
*/
if ((ce->proto != PROTO_UDPv4)
&& (options->replay_window != defaults.replay_window
|| options->replay_time != defaults.replay_time))
msg (M_USAGE, "--replay-window only makes sense with --proto udp");
if (!options->replay
&& (options->replay_window != defaults.replay_window
|| options->replay_time != defaults.replay_time))
msg (M_USAGE, "--replay-window doesn't make sense when replay protection is disabled with --no-replay");
/*
* SSL/TLS mode sanity checks.
*/
#ifdef USE_SSL
if (options->tls_server + options->tls_client +
(options->shared_secret_file != NULL) > 1)
msg (M_USAGE, "specify only one of --tls-server, --tls-client, or --secret");
if (options->tls_server)
{
notnull (options->dh_file, "DH file (--dh)");
}
if (options->tls_server || options->tls_client)
{
#ifdef ENABLE_PKCS11
if (options->pkcs11_providers[0])
{
notnull (options->ca_file, "CA file (--ca)");
if (options->pkcs11_id_management && options->pkcs11_id != NULL)
msg(M_USAGE, "Parameter --pkcs11-id cannot be used when --pkcs11-id-management is also specified.");
if (!options->pkcs11_id_management && options->pkcs11_id == NULL)
msg(M_USAGE, "Parameter --pkcs11-id or --pkcs11-id-management should be specified.");
if (options->cert_file)
msg(M_USAGE, "Parameter --cert cannot be used when --pkcs11-provider is also specified.");
if (options->priv_key_file)
msg(M_USAGE, "Parameter --key cannot be used when --pkcs11-provider is also specified.");
if (options->pkcs12_file)
msg(M_USAGE, "Parameter --pkcs12 cannot be used when --pkcs11-provider is also specified.");
#ifdef WIN32
if (options->cryptoapi_cert)
msg(M_USAGE, "Parameter --cryptoapicert cannot be used when --pkcs11-provider is also specified.");
#endif
}
else
#endif
#ifdef WIN32
if (options->cryptoapi_cert)
{
if ((!(options->ca_file)) && (!(options->ca_path)))
msg(M_USAGE, "You must define CA file (--ca) or CA path (--capath)");
if (options->cert_file)
msg(M_USAGE, "Parameter --cert cannot be used when --cryptoapicert is also specified.");
if (options->priv_key_file)
msg(M_USAGE, "Parameter --key cannot be used when --cryptoapicert is also specified.");
if (options->pkcs12_file)
msg(M_USAGE, "Parameter --pkcs12 cannot be used when --cryptoapicert is also specified.");
}
else
#endif
if (options->pkcs12_file)
{
if (options->ca_path)
msg(M_USAGE, "Parameter --capath cannot be used when --pkcs12 is also specified.");
if (options->cert_file)
msg(M_USAGE, "Parameter --cert cannot be used when --pkcs12 is also specified.");
if (options->priv_key_file)
msg(M_USAGE, "Parameter --key cannot be used when --pkcs12 is also specified.");
}
else
{
if ((!(options->ca_file)) && (!(options->ca_path)))
msg(M_USAGE, "You must define CA file (--ca) or CA path (--capath)");
if (pull)
{
const int sum = (options->cert_file != NULL) + (options->priv_key_file != NULL);
if (sum == 0)
{
#if P2MP
if (!options->auth_user_pass_file)
#endif
msg (M_USAGE, "No client-side authentication method is specified. You must use either --cert/--key, --pkcs12, or --auth-user-pass");
}
else if (sum == 2)
;
else
{
msg (M_USAGE, "If you use one of --cert or --key, you must use them both");
}
}
else
{
notnull (options->cert_file, "certificate file (--cert) or PKCS#12 file (--pkcs12)");
notnull (options->priv_key_file, "private key file (--key) or PKCS#12 file (--pkcs12)");
}
}
}
else
{
/*
* Make sure user doesn't specify any TLS options
* when in non-TLS mode.
*/
#define MUST_BE_UNDEF(parm) if (options->parm != defaults.parm) msg (M_USAGE, err, #parm);
const char err[] = "Parameter %s can only be specified in TLS-mode, i.e. where --tls-server or --tls-client is also specified.";
MUST_BE_UNDEF (ca_file);
MUST_BE_UNDEF (ca_path);
MUST_BE_UNDEF (dh_file);
MUST_BE_UNDEF (cert_file);
MUST_BE_UNDEF (priv_key_file);
MUST_BE_UNDEF (pkcs12_file);
MUST_BE_UNDEF (cipher_list);
MUST_BE_UNDEF (tls_verify);
MUST_BE_UNDEF (tls_remote);
MUST_BE_UNDEF (tls_timeout);
MUST_BE_UNDEF (renegotiate_bytes);
MUST_BE_UNDEF (renegotiate_packets);
MUST_BE_UNDEF (renegotiate_seconds);
MUST_BE_UNDEF (handshake_window);
MUST_BE_UNDEF (transition_window);
MUST_BE_UNDEF (tls_auth_file);
MUST_BE_UNDEF (single_session);
MUST_BE_UNDEF (tls_exit);
MUST_BE_UNDEF (crl_file);
MUST_BE_UNDEF (key_method);
MUST_BE_UNDEF (ns_cert_type);
MUST_BE_UNDEF (remote_cert_ku[0]);
MUST_BE_UNDEF (remote_cert_eku);
#ifdef ENABLE_PKCS11
MUST_BE_UNDEF (pkcs11_providers[0]);
MUST_BE_UNDEF (pkcs11_private_mode[0]);
MUST_BE_UNDEF (pkcs11_id);
MUST_BE_UNDEF (pkcs11_id_management);
#endif
if (pull)
msg (M_USAGE, err, "--pull");
}
#undef MUST_BE_UNDEF
#endif /* USE_CRYPTO */
#endif /* USE_SSL */
#if P2MP
if (options->auth_user_pass_file && !options->pull)
msg (M_USAGE, "--auth-user-pass requires --pull");
#endif
uninit_options (&defaults);
}
static void
options_postprocess_mutate_ce (struct options *o, struct connection_entry *ce)
{
#if P2MP_SERVER
if (o->server_defined || o->server_bridge_defined)
{
if (ce->proto == PROTO_TCPv4)
ce->proto = PROTO_TCPv4_SERVER;
}
#endif
#if P2MP
if (o->client)
{
if (ce->proto == PROTO_TCPv4)
ce->proto = PROTO_TCPv4_CLIENT;
}
#endif
if (ce->proto == PROTO_TCPv4_CLIENT && !ce->local && !ce->local_port_defined && !ce->bind_defined)
ce->bind_local = false;
#ifdef ENABLE_SOCKS
if (ce->proto == PROTO_UDPv4 && ce->socks_proxy_server && !ce->local && !ce->local_port_defined && !ce->bind_defined)
ce->bind_local = false;
#endif
if (!ce->bind_local)
ce->local_port = 0;
}
static void
options_postprocess_mutate_invariant (struct options *options)
{
const int dev = dev_type_enum (options->dev, options->dev_type);
/*
* If --mssfix is supplied without a parameter, default
* it to --fragment value, if --fragment is specified.
*/
if (options->mssfix_default)
{
#ifdef ENABLE_FRAGMENT
if (options->fragment)
options->mssfix = options->fragment;
#else
msg (M_USAGE, "--mssfix must specify a parameter");
#endif
}
/*
* In forking TCP server mode, you don't need to ifconfig
* the tap device (the assumption is that it will be bridged).
*/
if (options->inetd == INETD_NOWAIT)
options->ifconfig_noexec = true;
/*
* Set MTU defaults
*/
{
if (!options->tun_mtu_defined && !options->link_mtu_defined)
{
options->tun_mtu_defined = true;
}
if ((dev == DEV_TYPE_TAP) && !options->tun_mtu_extra_defined)
{
options->tun_mtu_extra_defined = true;
options->tun_mtu_extra = TAP_MTU_EXTRA_DEFAULT;
}
}
#ifdef WIN32
if ((dev == DEV_TYPE_TUN || dev == DEV_TYPE_TAP) && !options->route_delay_defined)
{
if (options->mode == MODE_POINT_TO_POINT)
{
options->route_delay_defined = true;
options->route_delay = 5; /* Vista sometimes has a race without this */
}
}
if (options->ifconfig_noexec)
{
options->tuntap_options.ip_win32_type = IPW32_SET_MANUAL;
options->ifconfig_noexec = false;
}
#endif
#if P2MP_SERVER
/*
* Check consistency of --mode server options.
*/
if (options->mode == MODE_SERVER)
{
#ifdef WIN32
/*
* We need to explicitly set --tap-sleep because
* we do not schedule event timers in the top-level context.
*/
options->tuntap_options.tap_sleep = 10;
if (options->route_delay_defined && options->route_delay)
options->tuntap_options.tap_sleep = options->route_delay;
options->route_delay_defined = false;
#endif
}
#endif
}
static void
options_postprocess_verify (const struct options *o)
{
#ifdef ENABLE_CONNECTION
if (o->connection_list)
{
int i;
for (i = 0; i < o->connection_list->len; ++i)
options_postprocess_verify_ce (o, o->connection_list->array[i]);
}
else
#endif
options_postprocess_verify_ce (o, &o->ce);
}
static void
options_postprocess_mutate (struct options *o)
{
/*
* Process helper-type options which map to other, more complex
* sequences of options.
*/
helper_client_server (o);
helper_keepalive (o);
options_postprocess_mutate_invariant (o);
#ifdef ENABLE_CONNECTION
if (o->remote_list && !o->connection_list)
{
/*
* For compatibility with 2.0.x, map multiple --remote options
* into connection list (connection lists added in 2.1).
*/
if (o->remote_list->len > 1)
{
const struct remote_list *rl = o->remote_list;
int i;
for (i = 0; i < rl->len; ++i)
{
const struct remote_entry *re = rl->array[i];
struct connection_entry ce = o->ce;
struct connection_entry *ace;
ASSERT (re->remote);
connection_entry_load_re (&ce, re);
ace = alloc_connection_entry (o, M_USAGE);
ASSERT (ace);
*ace = ce;
}
}
else if (o->remote_list->len == 1) /* one --remote option specfied */
{
connection_entry_load_re (&o->ce, o->remote_list->array[0]);
}
else
{
ASSERT (0);
}
}
if (o->connection_list)
{
int i;
for (i = 0; i < o->connection_list->len; ++i)
options_postprocess_mutate_ce (o, o->connection_list->array[i]);
}
else
#endif
options_postprocess_mutate_ce (o, &o->ce);
#if P2MP
/*
* Save certain parms before modifying options via --pull
*/
pre_pull_save (o);
#endif
}
/*
* Sanity check on options.
* Also set some options based on other
* options.
*/
void
options_postprocess (struct options *options)
{
options_postprocess_mutate (options);
options_postprocess_verify (options);
}
#if P2MP
/*
* Save/Restore certain option defaults before --pull is applied.
*/
void
pre_pull_save (struct options *o)
{
if (o->pull)
{
ALLOC_OBJ_CLEAR_GC (o->pre_pull, struct options_pre_pull, &o->gc);
o->pre_pull->tuntap_options = o->tuntap_options;
o->pre_pull->tuntap_options_defined = true;
o->pre_pull->foreign_option_index = o->foreign_option_index;
if (o->routes)
{
o->pre_pull->routes = *o->routes;
o->pre_pull->routes_defined = true;
}
}
}
void
pre_pull_restore (struct options *o)
{
const struct options_pre_pull *pp = o->pre_pull;
if (pp)
{
CLEAR (o->tuntap_options);
if (pp->tuntap_options_defined)
o->tuntap_options = pp->tuntap_options;
if (pp->routes_defined)
{
rol_check_alloc (o);
*o->routes = pp->routes;
}
else
o->routes = NULL;
o->foreign_option_index = pp->foreign_option_index;
}
}
#endif
#ifdef ENABLE_OCC
/*
* Build an options string to represent data channel encryption options.
* This string must match exactly between peers. The keysize is checked
* separately by read_key().
*
* The following options must match on both peers:
*
* Tunnel options:
*
* --dev tun|tap [unit number need not match]
* --dev-type tun|tap
* --link-mtu
* --udp-mtu
* --tun-mtu
* --proto udp
* --proto tcp-client [matched with --proto tcp-server
* on the other end of the connection]
* --proto tcp-server [matched with --proto tcp-client on
* the other end of the connection]
* --tun-ipv6
* --ifconfig x y [matched with --ifconfig y x on
* the other end of the connection]
*
* --comp-lzo
* --fragment
*
* Crypto Options:
*
* --cipher
* --auth
* --keysize
* --secret
* --no-replay
* --no-iv
*
* SSL Options:
*
* --tls-auth
* --tls-client [matched with --tls-server on
* the other end of the connection]
* --tls-server [matched with --tls-client on
* the other end of the connection]
*/
char *
options_string (const struct options *o,
const struct frame *frame,
struct tuntap *tt,
bool remote,
struct gc_arena *gc)
{
struct buffer out = alloc_buf (OPTION_LINE_SIZE);
bool tt_local = false;
buf_printf (&out, "V4");
/*
* Tunnel Options
*/
buf_printf (&out, ",dev-type %s", dev_type_string (o->dev, o->dev_type));
buf_printf (&out, ",link-mtu %d", EXPANDED_SIZE (frame));
buf_printf (&out, ",tun-mtu %d", PAYLOAD_SIZE (frame));
buf_printf (&out, ",proto %s", proto2ascii (proto_remote (o->ce.proto, remote), true));
if (o->tun_ipv6)
buf_printf (&out, ",tun-ipv6");
/*
* Try to get ifconfig parameters into the options string.
* If tt is undefined, make a temporary instantiation.
*/
if (!tt)
{
tt = init_tun (o->dev,
o->dev_type,
o->topology,
o->ifconfig_local,
o->ifconfig_remote_netmask,
(in_addr_t)0,
(in_addr_t)0,
false,
NULL);
if (tt)
tt_local = true;
}
if (tt && o->mode == MODE_POINT_TO_POINT && !PULL_DEFINED(o))
{
const char *ios = ifconfig_options_string (tt, remote, o->ifconfig_nowarn, gc);
if (ios && strlen (ios))
buf_printf (&out, ",ifconfig %s", ios);
}
if (tt_local)
{
free (tt);
tt = NULL;
}
#ifdef USE_LZO
if (o->lzo & LZO_SELECTED)
buf_printf (&out, ",comp-lzo");
#endif
#ifdef ENABLE_FRAGMENT
if (o->fragment)
buf_printf (&out, ",mtu-dynamic");
#endif
#ifdef USE_CRYPTO
#ifdef USE_SSL
#define TLS_CLIENT (o->tls_client)
#define TLS_SERVER (o->tls_server)
#else
#define TLS_CLIENT (false)
#define TLS_SERVER (false)
#endif
/*
* Key direction
*/
{
const char *kd = keydirection2ascii (o->key_direction, remote);
if (kd)
buf_printf (&out, ",keydir %s", kd);
}
/*
* Crypto Options
*/
if (o->shared_secret_file || TLS_CLIENT || TLS_SERVER)
{
struct key_type kt;
ASSERT ((o->shared_secret_file != NULL)
+ (TLS_CLIENT == true)
+ (TLS_SERVER == true)
<= 1);
init_key_type (&kt, o->ciphername, o->ciphername_defined,
o->authname, o->authname_defined,
o->keysize, true, false);
buf_printf (&out, ",cipher %s", kt_cipher_name (&kt));
buf_printf (&out, ",auth %s", kt_digest_name (&kt));
buf_printf (&out, ",keysize %d", kt_key_size (&kt));
if (o->shared_secret_file)
buf_printf (&out, ",secret");
if (!o->replay)
buf_printf (&out, ",no-replay");
if (!o->use_iv)
buf_printf (&out, ",no-iv");
}
#ifdef USE_SSL
/*
* SSL Options
*/
{
if (TLS_CLIENT || TLS_SERVER)
{
if (o->tls_auth_file)
buf_printf (&out, ",tls-auth");
if (o->key_method > 1)
buf_printf (&out, ",key-method %d", o->key_method);
}
if (remote)
{
if (TLS_CLIENT)
buf_printf (&out, ",tls-server");
else if (TLS_SERVER)
buf_printf (&out, ",tls-client");
}
else
{
if (TLS_CLIENT)
buf_printf (&out, ",tls-client");
else if (TLS_SERVER)
buf_printf (&out, ",tls-server");
}
}
#endif /* USE_SSL */
#undef TLS_CLIENT
#undef TLS_SERVER
#endif /* USE_CRYPTO */
return BSTR (&out);
}
/*
* Compare option strings for equality.
* If the first two chars of the strings differ, it means that
* we are looking at different versions of the options string,
* therefore don't compare them and return true.
*/
bool
options_cmp_equal (char *actual, const char *expected)
{
return options_cmp_equal_safe (actual, expected, strlen (actual) + 1);
}
void
options_warning (char *actual, const char *expected)
{
options_warning_safe (actual, expected, strlen (actual) + 1);
}
static const char *
options_warning_extract_parm1 (const char *option_string,
struct gc_arena *gc_ret)
{
struct gc_arena gc = gc_new ();
struct buffer b = string_alloc_buf (option_string, &gc);
char *p = gc_malloc (OPTION_PARM_SIZE, false, &gc);
const char *ret;
buf_parse (&b, ' ', p, OPTION_PARM_SIZE);
ret = string_alloc (p, gc_ret);
gc_free (&gc);
return ret;
}
static void
options_warning_safe_scan2 (const int msglevel,
const int delim,
const bool report_inconsistent,
const char *p1,
const struct buffer *b2_src,
const char *b1_name,
const char *b2_name)
{
if (strlen (p1) > 0)
{
struct gc_arena gc = gc_new ();
struct buffer b2 = *b2_src;
const char *p1_prefix = options_warning_extract_parm1 (p1, &gc);
char *p2 = gc_malloc (OPTION_PARM_SIZE, false, &gc);
while (buf_parse (&b2, delim, p2, OPTION_PARM_SIZE))
{
if (strlen (p2))
{
const char *p2_prefix = options_warning_extract_parm1 (p2, &gc);
if (!strcmp (p1, p2))
goto done;
if (!strcmp (p1_prefix, p2_prefix))
{
if (report_inconsistent)
msg (msglevel, "WARNING: '%s' is used inconsistently, %s='%s', %s='%s'",
safe_print (p1_prefix, &gc),
b1_name,
safe_print (p1, &gc),
b2_name,
safe_print (p2, &gc));
goto done;
}
}
}
msg (msglevel, "WARNING: '%s' is present in %s config but missing in %s config, %s='%s'",
safe_print (p1_prefix, &gc),
b1_name,
b2_name,
b1_name,
safe_print (p1, &gc));
done:
gc_free (&gc);
}
}
static void
options_warning_safe_scan1 (const int msglevel,
const int delim,
const bool report_inconsistent,
const struct buffer *b1_src,
const struct buffer *b2_src,
const char *b1_name,
const char *b2_name)
{
struct gc_arena gc = gc_new ();
struct buffer b = *b1_src;
char *p = gc_malloc (OPTION_PARM_SIZE, true, &gc);
while (buf_parse (&b, delim, p, OPTION_PARM_SIZE))
options_warning_safe_scan2 (msglevel, delim, report_inconsistent, p, b2_src, b1_name, b2_name);
gc_free (&gc);
}
static void
options_warning_safe_ml (const int msglevel, char *actual, const char *expected, size_t actual_n)
{
struct gc_arena gc = gc_new ();
if (actual_n > 0)
{
struct buffer local = alloc_buf_gc (OPTION_PARM_SIZE + 16, &gc);
struct buffer remote = alloc_buf_gc (OPTION_PARM_SIZE + 16, &gc);
actual[actual_n - 1] = 0;
buf_printf (&local, "version %s", expected);
buf_printf (&remote, "version %s", actual);
options_warning_safe_scan1 (msglevel, ',', true,
&local, &remote,
"local", "remote");
options_warning_safe_scan1 (msglevel, ',', false,
&remote, &local,
"remote", "local");
}
gc_free (&gc);
}
bool
options_cmp_equal_safe (char *actual, const char *expected, size_t actual_n)
{
struct gc_arena gc = gc_new ();
bool ret = true;
if (actual_n > 0)
{
actual[actual_n - 1] = 0;
#ifndef STRICT_OPTIONS_CHECK
if (strncmp (actual, expected, 2))
{
msg (D_SHOW_OCC, "NOTE: Options consistency check may be skewed by version differences");
options_warning_safe_ml (D_SHOW_OCC, actual, expected, actual_n);
}
else
#endif
ret = !strcmp (actual, expected);
}
gc_free (&gc);
return ret;
}
void
options_warning_safe (char *actual, const char *expected, size_t actual_n)
{
options_warning_safe_ml (M_WARN, actual, expected, actual_n);
}
const char *
options_string_version (const char* s, struct gc_arena *gc)
{
struct buffer out = alloc_buf_gc (4, gc);
strncpynt ((char *) BPTR (&out), s, 3);
return BSTR (&out);
}
#endif /* ENABLE_OCC */
static void
foreign_option (struct options *o, char *argv[], int len, struct env_set *es)
{
if (len > 0)
{
struct gc_arena gc = gc_new();
struct buffer name = alloc_buf_gc (OPTION_PARM_SIZE, &gc);
struct buffer value = alloc_buf_gc (OPTION_PARM_SIZE, &gc);
int i;
bool first = true;
buf_printf (&name, "foreign_option_%d", o->foreign_option_index + 1);
++o->foreign_option_index;
for (i = 0; i < len; ++i)
{
if (argv[i])
{
if (!first)
buf_printf (&value, " ");
buf_printf (&value, "%s", argv[i]);
first = false;
}
}
setenv_str (es, BSTR(&name), BSTR(&value));
gc_free (&gc);
}
}
/*
* parse/print topology coding
*/
int
parse_topology (const char *str, const int msglevel)
{
if (streq (str, "net30"))
return TOP_NET30;
else if (streq (str, "p2p"))
return TOP_P2P;
else if (streq (str, "subnet"))
return TOP_SUBNET;
else
{
msg (msglevel, "--topology must be net30, p2p, or subnet");
return TOP_UNDEF;
}
}
const char *
print_topology (const int topology)
{
switch (topology)
{
case TOP_UNDEF:
return "undef";
case TOP_NET30:
return "net30";
case TOP_P2P:
return "p2p";
case TOP_SUBNET:
return "subnet";
default:
return "unknown";
}
}
#if P2MP
/*
* Manage auth-retry variable
*/
static int global_auth_retry; /* GLOBAL */
int
auth_retry_get (void)
{
return global_auth_retry;
}
bool
auth_retry_set (const int msglevel, const char *option)
{
if (streq (option, "interact"))
global_auth_retry = AR_INTERACT;
else if (streq (option, "nointeract"))
global_auth_retry = AR_NOINTERACT;
else if (streq (option, "none"))
global_auth_retry = AR_NONE;
else
{
msg (msglevel, "--auth-retry method must be 'interact', 'nointeract', or 'none'");
return false;
}
return true;
}
const char *
auth_retry_print (void)
{
switch (global_auth_retry)
{
case AR_NONE:
return "none";
case AR_NOINTERACT:
return "nointeract";
case AR_INTERACT:
return "interact";
default:
return "???";
}
}
#endif
/*
* Print the help message.
*/
static void
usage (void)
{
FILE *fp = msg_fp();
#ifdef ENABLE_SMALL
fprintf (fp, "Usage message not available\n");
#else
struct options o;
init_options (&o, true);
#if defined(USE_CRYPTO) && defined(USE_SSL)
fprintf (fp, usage_message,
title_string,
o.ce.connect_retry_seconds,
o.ce.local_port, o.ce.remote_port,
TUN_MTU_DEFAULT, TAP_MTU_EXTRA_DEFAULT,
o.verbosity,
o.authname, o.ciphername,
o.replay_window, o.replay_time,
o.tls_timeout, o.renegotiate_seconds,
o.handshake_window, o.transition_window);
#elif defined(USE_CRYPTO)
fprintf (fp, usage_message,
title_string,
o.ce.connect_retry_seconds,
o.ce.local_port, o.ce.remote_port,
TUN_MTU_DEFAULT, TAP_MTU_EXTRA_DEFAULT,
o.verbosity,
o.authname, o.ciphername,
o.replay_window, o.replay_time);
#else
fprintf (fp, usage_message,
title_string,
o.ce.connect_retry_seconds,
o.ce.local_port, o.ce.remote_port,
TUN_MTU_DEFAULT, TAP_MTU_EXTRA_DEFAULT,
o.verbosity);
#endif
fflush(fp);
#endif /* ENABLE_SMALL */
openvpn_exit (OPENVPN_EXIT_STATUS_USAGE); /* exit point */
}
void
usage_small (void)
{
msg (M_WARN|M_NOPREFIX, "Use --help for more information.");
openvpn_exit (OPENVPN_EXIT_STATUS_USAGE); /* exit point */
}
static void
usage_version (void)
{
msg (M_INFO|M_NOPREFIX, "%s", title_string);
msg (M_INFO|M_NOPREFIX, "Developed by James Yonan");
msg (M_INFO|M_NOPREFIX, "Copyright (C) 2002-2008 Telethra, Inc. <sales@openvpn.net>");
openvpn_exit (OPENVPN_EXIT_STATUS_USAGE); /* exit point */
}
void
notnull (const char *arg, const char *description)
{
if (!arg)
msg (M_USAGE, "You must define %s", description);
}
bool
string_defined_equal (const char *s1, const char *s2)
{
if (s1 && s2)
return !strcmp (s1, s2);
else
return false;
}
#if 0
static void
ping_rec_err (int msglevel)
{
msg (msglevel, "only one of --ping-exit or --ping-restart options may be specified");
}
#endif
static int
positive_atoi (const char *str)
{
const int i = atoi (str);
return i < 0 ? 0 : i;
}
static inline bool
space (unsigned char c)
{
return c == '\0' || isspace (c);
}
int
parse_line (const char *line,
char *p[],
const int n,
const char *file,
const int line_num,
int msglevel,
struct gc_arena *gc)
{
const int STATE_INITIAL = 0;
const int STATE_READING_QUOTED_PARM = 1;
const int STATE_READING_UNQUOTED_PARM = 2;
const int STATE_DONE = 3;
const int STATE_READING_SQUOTED_PARM = 4;
const char *error_prefix = "";
int ret = 0;
const char *c = line;
int state = STATE_INITIAL;
bool backslash = false;
char in, out;
char parm[OPTION_PARM_SIZE];
unsigned int parm_len = 0;
msglevel &= ~M_OPTERR;
if (msglevel & M_MSG_VIRT_OUT)
error_prefix = "ERROR: ";
do
{
in = *c;
out = 0;
if (!backslash && in == '\\' && state != STATE_READING_SQUOTED_PARM)
{
backslash = true;
}
else
{
if (state == STATE_INITIAL)
{
if (!space (in))
{
if (in == ';' || in == '#') /* comment */
break;
if (!backslash && in == '\"')
state = STATE_READING_QUOTED_PARM;
else if (!backslash && in == '\'')
state = STATE_READING_SQUOTED_PARM;
else
{
out = in;
state = STATE_READING_UNQUOTED_PARM;
}
}
}
else if (state == STATE_READING_UNQUOTED_PARM)
{
if (!backslash && space (in))
state = STATE_DONE;
else
out = in;
}
else if (state == STATE_READING_QUOTED_PARM)
{
if (!backslash && in == '\"')
state = STATE_DONE;
else
out = in;
}
else if (state == STATE_READING_SQUOTED_PARM)
{
if (in == '\'')
state = STATE_DONE;
else
out = in;
}
if (state == STATE_DONE)
{
/* ASSERT (parm_len > 0); */
p[ret] = gc_malloc (parm_len + 1, true, gc);
memcpy (p[ret], parm, parm_len);
p[ret][parm_len] = '\0';
state = STATE_INITIAL;
parm_len = 0;
++ret;
}
if (backslash && out)
{
if (!(out == '\\' || out == '\"' || space (out)))
#ifdef ENABLE_SMALL
msg (msglevel, "%sOptions warning: Bad backslash ('\\') usage in %s:%d", error_prefix, file, line_num);
#else
msg (msglevel, "%sOptions warning: Bad backslash ('\\') usage in %s:%d: remember that backslashes are treated as shell-escapes and if you need to pass backslash characters as part of a Windows filename, you should use double backslashes such as \"c:\\\\" PACKAGE "\\\\static.key\"", error_prefix, file, line_num);
#endif
}
backslash = false;
}
/* store parameter character */
if (out)
{
if (parm_len >= SIZE (parm))
{
parm[SIZE (parm) - 1] = 0;
msg (msglevel, "%sOptions error: Parameter at %s:%d is too long (%d chars max): %s",
error_prefix, file, line_num, (int) SIZE (parm), parm);
return 0;
}
parm[parm_len++] = out;
}
/* avoid overflow if too many parms in one config file line */
if (ret >= n)
break;
} while (*c++ != '\0');
if (state == STATE_READING_QUOTED_PARM)
{
msg (msglevel, "%sOptions error: No closing quotation (\") in %s:%d", error_prefix, file, line_num);
return 0;
}
if (state == STATE_READING_SQUOTED_PARM)
{
msg (msglevel, "%sOptions error: No closing single quotation (\') in %s:%d", error_prefix, file, line_num);
return 0;
}
if (state != STATE_INITIAL)
{
msg (msglevel, "%sOptions error: Residual parse state (%d) in %s:%d", error_prefix, state, file, line_num);
return 0;
}
#if 0
{
int i;
for (i = 0; i < ret; ++i)
{
msg (M_INFO|M_NOPREFIX, "%s:%d ARG[%d] '%s'", file, line_num, i, p[i]);
}
}
#endif
return ret;
}
static void
bypass_doubledash (char **p)
{
if (strlen (*p) >= 3 && !strncmp (*p, "--", 2))
*p += 2;
}
#if ENABLE_INLINE_FILES
struct in_src {
# define IS_TYPE_FP 1
# define IS_TYPE_BUF 2
int type;
union {
FILE *fp;
struct buffer *multiline;
} u;
};
static bool
in_src_get (const struct in_src *is, char *line, const int size)
{
if (is->type == IS_TYPE_FP)
{
return BOOL_CAST (fgets (line, size, is->u.fp));
}
else if (is->type == IS_TYPE_BUF)
{
bool status = buf_parse (is->u.multiline, '\n', line, size);
if ((int) strlen (line) + 1 < size)
strcat (line, "\n");
return status;
}
else
{
ASSERT (0);
return false;
}
}
static char *
read_inline_file (struct in_src *is, const char *close_tag, struct gc_arena *gc)
{
char line[OPTION_LINE_SIZE];
struct buffer buf = alloc_buf (10000);
char *ret;
while (in_src_get (is, line, sizeof (line)))
{
if (!strncmp (line, close_tag, strlen (close_tag)))
break;
buf_printf (&buf, "%s", line);
}
ret = string_alloc (BSTR (&buf), gc);
buf_clear (&buf);
free_buf (&buf);
CLEAR (line);
return ret;
}
static bool
check_inline_file (struct in_src *is, char *p[], struct gc_arena *gc)
{
bool ret = false;
if (p[0] && !p[1])
{
char *arg = p[0];
if (arg[0] == '<' && arg[strlen(arg)-1] == '>')
{
struct buffer close_tag;
arg[strlen(arg)-1] = '\0';
p[0] = string_alloc (arg+1, gc);
p[1] = string_alloc (INLINE_FILE_TAG, gc);
close_tag = alloc_buf (strlen(p[0]) + 4);
buf_printf (&close_tag, "</%s>", p[0]);
p[2] = read_inline_file (is, BSTR (&close_tag), gc);
p[3] = NULL;
free_buf (&close_tag);
ret = true;
}
}
return ret;
}
static bool
check_inline_file_via_fp (FILE *fp, char *p[], struct gc_arena *gc)
{
struct in_src is;
is.type = IS_TYPE_FP;
is.u.fp = fp;
return check_inline_file (&is, p, gc);
}
static bool
check_inline_file_via_buf (struct buffer *multiline, char *p[], struct gc_arena *gc)
{
struct in_src is;
is.type = IS_TYPE_BUF;
is.u.multiline = multiline;
return check_inline_file (&is, p, gc);
}
#endif
static void
add_option (struct options *options,
char *p[],
const char *file,
int line,
const int level,
const int msglevel,
const unsigned int permission_mask,
unsigned int *option_types_found,
struct env_set *es);
static void
read_config_file (struct options *options,
const char *file,
int level,
const char *top_file,
const int top_line,
const int msglevel,
const unsigned int permission_mask,
unsigned int *option_types_found,
struct env_set *es)
{
const int max_recursive_levels = 10;
FILE *fp;
int line_num;
char line[OPTION_LINE_SIZE];
char *p[MAX_PARMS];
++level;
if (level <= max_recursive_levels)
{
fp = fopen (file, "r");
if (fp)
{
line_num = 0;
while (fgets(line, sizeof (line), fp))
{
CLEAR (p);
++line_num;
if (parse_line (line, p, SIZE (p), file, line_num, msglevel, &options->gc))
{
bypass_doubledash (&p[0]);
#if ENABLE_INLINE_FILES
check_inline_file_via_fp (fp, p, &options->gc);
#endif
add_option (options, p, file, line_num, level, msglevel, permission_mask, option_types_found, es);
}
}
fclose (fp);
}
else
{
msg (msglevel, "In %s:%d: Error opening configuration file: %s", top_file, top_line, file);
}
}
else
{
msg (msglevel, "In %s:%d: Maximum recursive include levels exceeded in include attempt of file %s -- probably you have a configuration file that tries to include itself.", top_file, top_line, file);
}
CLEAR (line);
CLEAR (p);
}
static void
read_config_string (const char *prefix,
struct options *options,
const char *config,
const int msglevel,
const unsigned int permission_mask,
unsigned int *option_types_found,
struct env_set *es)
{
char line[OPTION_LINE_SIZE];
struct buffer multiline;
int line_num = 0;
buf_set_read (&multiline, (uint8_t*)config, strlen (config));
while (buf_parse (&multiline, '\n', line, sizeof (line)))
{
char *p[MAX_PARMS];
CLEAR (p);
++line_num;
if (parse_line (line, p, SIZE (p), prefix, line_num, msglevel, &options->gc))
{
bypass_doubledash (&p[0]);
#if ENABLE_INLINE_FILES
check_inline_file_via_buf (&multiline, p, &options->gc);
#endif
add_option (options, p, NULL, line_num, 0, msglevel, permission_mask, option_types_found, es);
}
CLEAR (p);
}
CLEAR (line);
}
void
parse_argv (struct options *options,
const int argc,
char *argv[],
const int msglevel,
const unsigned int permission_mask,
unsigned int *option_types_found,
struct env_set *es)
{
int i, j;
/* usage message */
if (argc <= 1)
usage ();
/* config filename specified only? */
if (argc == 2 && strncmp (argv[1], "--", 2))
{
char *p[MAX_PARMS];
CLEAR (p);
p[0] = "config";
p[1] = argv[1];
add_option (options, p, NULL, 0, 0, msglevel, permission_mask, option_types_found, es);
}
else
{
/* parse command line */
for (i = 1; i < argc; ++i)
{
char *p[MAX_PARMS];
CLEAR (p);
p[0] = argv[i];
if (strncmp(p[0], "--", 2))
{
msg (msglevel, "I'm trying to parse \"%s\" as an --option parameter but I don't see a leading '--'", p[0]);
}
else
p[0] += 2;
for (j = 1; j < MAX_PARMS; ++j)
{
if (i + j < argc)
{
char *arg = argv[i + j];
if (strncmp (arg, "--", 2))
p[j] = arg;
else
break;
}
}
add_option (options, p, NULL, 0, 0, msglevel, permission_mask, option_types_found, es);
i += j - 1;
}
}
}
bool
apply_push_options (struct options *options,
struct buffer *buf,
unsigned int permission_mask,
unsigned int *option_types_found,
struct env_set *es)
{
char line[OPTION_PARM_SIZE];
int line_num = 0;
const char *file = "[PUSH-OPTIONS]";
const int msglevel = D_PUSH_ERRORS|M_OPTERR;
while (buf_parse (buf, ',', line, sizeof (line)))
{
char *p[MAX_PARMS];
CLEAR (p);
++line_num;
if (parse_line (line, p, SIZE (p), file, line_num, msglevel, &options->gc))
{
add_option (options, p, file, line_num, 0, msglevel, permission_mask, option_types_found, es);
}
}
return true;
}
void
options_server_import (struct options *o,
const char *filename,
int msglevel,
unsigned int permission_mask,
unsigned int *option_types_found,
struct env_set *es)
{
msg (D_PUSH, "OPTIONS IMPORT: reading client specific options from: %s", filename);
read_config_file (o,
filename,
0,
filename,
0,
msglevel,
permission_mask,
option_types_found,
es);
}
void options_string_import (struct options *options,
const char *config,
const int msglevel,
const unsigned int permission_mask,
unsigned int *option_types_found,
struct env_set *es)
{
read_config_string ("[CONFIG-STRING]", options, config, msglevel, permission_mask, option_types_found, es);
}
#if P2MP
#define VERIFY_PERMISSION(mask) { if (!verify_permission(p[0], (mask), permission_mask, option_types_found, msglevel)) goto err; }
static bool
verify_permission (const char *name,
const unsigned int type,
const unsigned int allowed,
unsigned int *found,
const int msglevel)
{
if (!(type & allowed))
{
msg (msglevel, "option '%s' cannot be used in this context", name);
return false;
}
else
{
if (found)
*found |= type;
return true;
}
}
#else
#define VERIFY_PERMISSION(mask)
#endif
/*
* Check that an option doesn't have too
* many parameters.
*/
#define NM_QUOTE_HINT (1<<0)
static bool
no_more_than_n_args (const int msglevel,
char *p[],
const int max,
const unsigned int flags)
{
const int len = string_array_len ((const char **)p);
if (!len)
return false;
if (len > max)
{
msg (msglevel, "the --%s directive should have at most %d parameter%s.%s",
p[0],
max - 1,
max >= 3 ? "s" : "",
(flags & NM_QUOTE_HINT) ? " To pass a list of arguments as one of the parameters, try enclosing them in double quotes (\"\")." : "");
return false;
}
else
return true;
}
static void
add_option (struct options *options,
char *p[],
const char *file,
int line,
const int level,
const int msglevel,
const unsigned int permission_mask,
unsigned int *option_types_found,
struct env_set *es)
{
struct gc_arena gc = gc_new ();
ASSERT (MAX_PARMS >= 5);
if (!file)
{
file = "[CMD-LINE]";
line = 1;
}
if (streq (p[0], "help"))
{
VERIFY_PERMISSION (OPT_P_GENERAL);
usage ();
}
if (streq (p[0], "version"))
{
VERIFY_PERMISSION (OPT_P_GENERAL);
usage_version ();
}
else if (streq (p[0], "config") && p[1])
{
VERIFY_PERMISSION (OPT_P_CONFIG);
/* save first config file only in options */
if (!options->config)
options->config = p[1];
read_config_file (options, p[1], level, file, line, msglevel, permission_mask, option_types_found, es);
}
else if (streq (p[0], "echo") || streq (p[0], "parameter"))
{
struct buffer string = alloc_buf_gc (OPTION_PARM_SIZE, &gc);
int j;
const bool pull_mode = BOOL_CAST (permission_mask & OPT_P_PULL_MODE);
VERIFY_PERMISSION (OPT_P_ECHO);
for (j = 1; j < MAX_PARMS; ++j)
{
if (!p[j])
break;
if (j > 1)
buf_printf (&string, " ");
buf_printf (&string, "%s", p[j]);
}
msg (M_INFO, "%s:%s",
pull_mode ? "ECHO-PULL" : "ECHO",
BSTR (&string));
#ifdef ENABLE_MANAGEMENT
if (management)
management_echo (management, BSTR (&string), pull_mode);
#endif
}
#ifdef ENABLE_MANAGEMENT
else if (streq (p[0], "management") && p[1] && p[2])
{
int port;
VERIFY_PERMISSION (OPT_P_GENERAL);
port = atoi (p[2]);
if (!legal_ipv4_port (port))
{
msg (msglevel, "port number associated with --management directive is out of range");
goto err;
}
options->management_addr = p[1];
options->management_port = port;
if (p[3])
{
options->management_user_pass = p[3];
}
}
else if (streq (p[0], "management-query-passwords"))
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->management_flags |= MF_QUERY_PASSWORDS;
}
else if (streq (p[0], "management-hold"))
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->management_flags |= MF_HOLD;
}
else if (streq (p[0], "management-signal"))
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->management_flags |= MF_SIGNAL;
}
else if (streq (p[0], "management-forget-disconnect"))
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->management_flags |= MF_FORGET_DISCONNECT;
}
else if (streq (p[0], "management-client"))
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->management_flags |= MF_CONNECT_AS_CLIENT;
options->management_write_peer_info_file = p[1];
}
#ifdef MANAGEMENT_DEF_AUTH
else if (streq (p[0], "management-client-auth"))
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->management_flags |= MF_CLIENT_AUTH;
}
#endif
#ifdef MANAGEMENT_PF
else if (streq (p[0], "management-client-pf"))
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->management_flags |= (MF_CLIENT_PF | MF_CLIENT_AUTH);
}
#endif
else if (streq (p[0], "management-log-cache") && p[1])
{
int cache;
VERIFY_PERMISSION (OPT_P_GENERAL);
cache = atoi (p[1]);
if (cache < 1)
{
msg (msglevel, "--management-log-cache parameter is out of range");
goto err;
}
options->management_log_history_cache = cache;
}
#endif
#ifdef ENABLE_PLUGIN
else if (streq (p[0], "plugin") && p[1])
{
VERIFY_PERMISSION (OPT_P_PLUGIN);
if (!options->plugin_list)
options->plugin_list = plugin_option_list_new (&options->gc);
if (!plugin_option_list_add (options->plugin_list, &p[1], &options->gc))
{
msg (msglevel, "plugin add failed: %s", p[1]);
goto err;
}
}
#endif
else if (streq (p[0], "mode") && p[1])
{
VERIFY_PERMISSION (OPT_P_GENERAL);
if (streq (p[1], "p2p"))
options->mode = MODE_POINT_TO_POINT;
#if P2MP_SERVER
else if (streq (p[1], "server"))
options->mode = MODE_SERVER;
#endif
else
{
msg (msglevel, "Bad --mode parameter: %s", p[1]);
goto err;
}
}
else if (streq (p[0], "dev") && p[1])
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->dev = p[1];
}
else if (streq (p[0], "dev-type") && p[1])
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->dev_type = p[1];
}
else if (streq (p[0], "dev-node") && p[1])
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->dev_node = p[1];
}
else if (streq (p[0], "lladdr") && p[1])
{
VERIFY_PERMISSION (OPT_P_UP);
options->lladdr = p[1];
}
else if (streq (p[0], "topology") && p[1])
{
VERIFY_PERMISSION (OPT_P_UP);
options->topology = parse_topology (p[1], msglevel);
}
else if (streq (p[0], "tun-ipv6"))
{
VERIFY_PERMISSION (OPT_P_UP);
options->tun_ipv6 = true;
}
#ifdef CONFIG_FEATURE_IPROUTE
else if (streq (p[0], "iproute") && p[1])
{
VERIFY_PERMISSION (OPT_P_UP);
iproute_path = p[1];
}
#endif
else if (streq (p[0], "ifconfig") && p[1] && p[2])
{
VERIFY_PERMISSION (OPT_P_UP);
options->ifconfig_local = p[1];
options->ifconfig_remote_netmask = p[2];
}
else if (streq (p[0], "ifconfig-noexec"))
{
VERIFY_PERMISSION (OPT_P_UP);
options->ifconfig_noexec = true;
}
else if (streq (p[0], "ifconfig-nowarn"))
{
VERIFY_PERMISSION (OPT_P_UP);
options->ifconfig_nowarn = true;
}
else if (streq (p[0], "local") && p[1])
{
VERIFY_PERMISSION (OPT_P_GENERAL|OPT_P_CONNECTION);
options->ce.local = p[1];
}
else if (streq (p[0], "remote-random"))
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->remote_random = true;
}
#if ENABLE_CONNECTION
else if (streq (p[0], "connection") && p[1])
{
VERIFY_PERMISSION (OPT_P_GENERAL);
if (streq (p[1], INLINE_FILE_TAG) && p[2])
{
struct options sub;
struct connection_entry *e;
init_options (&sub, true);
sub.ce = options->ce;
read_config_string ("[CONNECTION-OPTIONS]", &sub, p[2], msglevel, OPT_P_CONNECTION, option_types_found, es);
if (!sub.ce.remote)
{
msg (msglevel, "Each 'connection' block must contain exactly one 'remote' directive");
goto err;
}
e = alloc_connection_entry (options, msglevel);
if (!e)
goto err;
*e = sub.ce;
gc_transfer (&options->gc, &sub.gc);
uninit_options (&sub);
}
}
#endif
else if (streq (p[0], "remote") && p[1])
{
struct remote_entry re;
re.remote = NULL;
re.remote_port = re.proto = -1;
VERIFY_PERMISSION (OPT_P_GENERAL|OPT_P_CONNECTION);
re.remote = p[1];
if (p[2])
{
const int port = atoi (p[2]);
if (!legal_ipv4_port (port))
{
msg (msglevel, "remote: port number associated with host %s is out of range", p[1]);
goto err;
}
re.remote_port = port;
if (p[3])
{
const int proto = ascii2proto (p[3]);
if (proto < 0)
{
msg (msglevel, "remote: bad protocol associated with host %s: '%s'", p[1], p[3]);
goto err;
}
re.proto = proto;
}
}
#ifdef ENABLE_CONNECTION
if (permission_mask & OPT_P_GENERAL)
{
struct remote_entry *e = alloc_remote_entry (options, msglevel);
if (!e)
goto err;
*e = re;
}
else if (permission_mask & OPT_P_CONNECTION)
#endif
{
connection_entry_load_re (&options->ce, &re);
}
}
else if (streq (p[0], "resolv-retry") && p[1])
{
VERIFY_PERMISSION (OPT_P_GENERAL);
if (streq (p[1], "infinite"))
options->resolve_retry_seconds = RESOLV_RETRY_INFINITE;
else
options->resolve_retry_seconds = positive_atoi (p[1]);
}
else if (streq (p[0], "connect-retry") && p[1])
{
VERIFY_PERMISSION (OPT_P_GENERAL|OPT_P_CONNECTION);
options->ce.connect_retry_seconds = positive_atoi (p[1]);
options->ce.connect_retry_defined = true;
}
else if (streq (p[0], "connect-timeout") && p[1])
{
VERIFY_PERMISSION (OPT_P_GENERAL|OPT_P_CONNECTION);
options->ce.connect_timeout = positive_atoi (p[1]);
options->ce.connect_timeout_defined = true;
}
else if (streq (p[0], "connect-retry-max") && p[1])
{
VERIFY_PERMISSION (OPT_P_GENERAL|OPT_P_CONNECTION);
options->ce.connect_retry_max = positive_atoi (p[1]);
}
else if (streq (p[0], "ipchange") && p[1])
{
VERIFY_PERMISSION (OPT_P_SCRIPT);
if (!no_more_than_n_args (msglevel, p, 2, NM_QUOTE_HINT))
goto err;
options->ipchange = string_substitute (p[1], ',', ' ', &options->gc);
}
else if (streq (p[0], "float"))
{
VERIFY_PERMISSION (OPT_P_GENERAL|OPT_P_CONNECTION);
options->ce.remote_float = true;
}
#ifdef ENABLE_DEBUG
else if (streq (p[0], "gremlin") && p[1])
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->gremlin = positive_atoi (p[1]);
}
#endif
else if (streq (p[0], "chroot") && p[1])
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->chroot_dir = p[1];
}
else if (streq (p[0], "cd") && p[1])
{
VERIFY_PERMISSION (OPT_P_GENERAL);
if (openvpn_chdir (p[1]))
{
msg (M_ERR, "cd to '%s' failed", p[1]);
goto err;
}
options->cd_dir = p[1];
}
else if (streq (p[0], "writepid") && p[1])
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->writepid = p[1];
}
else if (streq (p[0], "up") && p[1])
{
VERIFY_PERMISSION (OPT_P_SCRIPT);
if (!no_more_than_n_args (msglevel, p, 2, NM_QUOTE_HINT))
goto err;
options->up_script = p[1];
}
else if (streq (p[0], "down") && p[1])
{
VERIFY_PERMISSION (OPT_P_SCRIPT);
if (!no_more_than_n_args (msglevel, p, 2, NM_QUOTE_HINT))
goto err;
options->down_script = p[1];
}
else if (streq (p[0], "down-pre"))
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->down_pre = true;
}
else if (streq (p[0], "up-delay"))
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->up_delay = true;
}
else if (streq (p[0], "up-restart"))
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->up_restart = true;
}
else if (streq (p[0], "syslog"))
{
VERIFY_PERMISSION (OPT_P_GENERAL);
open_syslog (p[1], false);
}
else if (streq (p[0], "daemon"))
{
bool didit = false;
VERIFY_PERMISSION (OPT_P_GENERAL);
if (!options->daemon)
{
options->daemon = didit = true;
open_syslog (p[1], false);
}
if (p[1])
{
if (!didit)
{
msg (M_WARN, "WARNING: Multiple --daemon directives specified, ignoring --daemon %s. (Note that initscripts sometimes add their own --daemon directive.)", p[1]);
goto err;
}
}
}
else if (streq (p[0], "inetd"))
{
VERIFY_PERMISSION (OPT_P_GENERAL);
if (!options->inetd)
{
int z;
const char *name = NULL;
const char *opterr = "when --inetd is used with two parameters, one of them must be 'wait' or 'nowait' and the other must be a daemon name to use for system logging";
options->inetd = -1;
for (z = 1; z <= 2; ++z)
{
if (p[z])
{
if (streq (p[z], "wait"))
{
if (options->inetd != -1)
{
msg (msglevel, opterr);
goto err;
}
else
options->inetd = INETD_WAIT;
}
else if (streq (p[z], "nowait"))
{
if (options->inetd != -1)
{
msg (msglevel, opterr);
goto err;
}
else
options->inetd = INETD_NOWAIT;
}
else
{
if (name != NULL)
{
msg (msglevel, opterr);
goto err;
}
name = p[z];
}
}
}
/* default */
if (options->inetd == -1)
options->inetd = INETD_WAIT;
save_inetd_socket_descriptor ();
open_syslog (name, true);
}
}
else if (streq (p[0], "log") && p[1])
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->log = true;
redirect_stdout_stderr (p[1], false);
}
else if (streq (p[0], "suppress-timestamps"))
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->suppress_timestamps = true;
set_suppress_timestamps(true);
}
else if (streq (p[0], "log-append") && p[1])
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->log = true;
redirect_stdout_stderr (p[1], true);
}
else if (streq (p[0], "mlock"))
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->mlock = true;
}
#if ENABLE_IP_PKTINFO
else if (streq (p[0], "multihome"))
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->sockflags |= SF_USE_IP_PKTINFO;
}
#endif
else if (streq (p[0], "verb") && p[1])
{
VERIFY_PERMISSION (OPT_P_MESSAGES);
options->verbosity = positive_atoi (p[1]);
}
else if (streq (p[0], "mute") && p[1])
{
VERIFY_PERMISSION (OPT_P_MESSAGES);
options->mute = positive_atoi (p[1]);
}
else if (streq (p[0], "status") && p[1])
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->status_file = p[1];
if (p[2])
{
options->status_file_update_freq = positive_atoi (p[2]);
}
}
else if (streq (p[0], "status-version") && p[1])
{
int version;
VERIFY_PERMISSION (OPT_P_GENERAL);
version = atoi (p[1]);
if (version < 1 || version > 2)
{
msg (msglevel, "--status-version must be 1 or 2");
goto err;
}
options->status_file_version = version;
}
else if (streq (p[0], "remap-usr1") && p[1])
{
VERIFY_PERMISSION (OPT_P_GENERAL);
if (streq (p[1], "SIGHUP"))
options->remap_sigusr1 = SIGHUP;
else if (streq (p[1], "SIGTERM"))
options->remap_sigusr1 = SIGTERM;
else
{
msg (msglevel, "--remap-usr1 parm must be 'SIGHUP' or 'SIGTERM'");
goto err;
}
}
else if ((streq (p[0], "link-mtu") || streq (p[0], "udp-mtu")) && p[1])
{
VERIFY_PERMISSION (OPT_P_MTU);
options->link_mtu = positive_atoi (p[1]);
options->link_mtu_defined = true;
}
else if (streq (p[0], "tun-mtu") && p[1])
{
VERIFY_PERMISSION (OPT_P_MTU);
options->tun_mtu = positive_atoi (p[1]);
options->tun_mtu_defined = true;
}
else if (streq (p[0], "tun-mtu-extra") && p[1])
{
VERIFY_PERMISSION (OPT_P_MTU);
options->tun_mtu_extra = positive_atoi (p[1]);
options->tun_mtu_extra_defined = true;
}
#ifdef ENABLE_FRAGMENT
else if (streq (p[0], "mtu-dynamic"))
{
VERIFY_PERMISSION (OPT_P_GENERAL);
msg (msglevel, "--mtu-dynamic has been replaced by --fragment");
goto err;
}
else if (streq (p[0], "fragment") && p[1])
{
VERIFY_PERMISSION (OPT_P_MTU);
options->fragment = positive_atoi (p[1]);
}
#endif
else if (streq (p[0], "mtu-disc") && p[1])
{
VERIFY_PERMISSION (OPT_P_MTU);
options->mtu_discover_type = translate_mtu_discover_type_name (p[1]);
}
#ifdef ENABLE_OCC
else if (streq (p[0], "mtu-test"))
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->mtu_test = true;
}
#endif
else if (streq (p[0], "nice") && p[1])
{
VERIFY_PERMISSION (OPT_P_NICE);
options->nice = atoi (p[1]);
}
else if (streq (p[0], "rcvbuf") && p[1])
{
VERIFY_PERMISSION (OPT_P_SOCKBUF);
options->rcvbuf = positive_atoi (p[1]);
}
else if (streq (p[0], "sndbuf") && p[1])
{
VERIFY_PERMISSION (OPT_P_SOCKBUF);
options->sndbuf = positive_atoi (p[1]);
}
else if (streq (p[0], "socket-flags"))
{
int j;
VERIFY_PERMISSION (OPT_P_SOCKFLAGS);
for (j = 1; j < MAX_PARMS && p[j]; ++j)
{
if (streq (p[j], "TCP_NODELAY"))
options->sockflags |= SF_TCP_NODELAY;
else
msg (msglevel, "unknown socket flag: %s", p[j]);
}
}
else if (streq (p[0], "txqueuelen") && p[1])
{
VERIFY_PERMISSION (OPT_P_GENERAL);
#ifdef TARGET_LINUX
options->tuntap_options.txqueuelen = positive_atoi (p[1]);
#else
msg (msglevel, "--txqueuelen not supported on this OS");
goto err;
#endif
}
#ifdef USE_PTHREAD
else if (streq (p[0], "nice-work") && p[1])
{
VERIFY_PERMISSION (OPT_P_NICE);
options->nice_work = atoi (p[1]);
}
else if (streq (p[0], "threads") && p[1])
{
int n_threads;
VERIFY_PERMISSION (OPT_P_GENERAL);
n_threads = positive_atoi (p[1]);
if (n_threads < 1)
{
msg (msglevel, "--threads parameter must be at least 1");
goto err;
}
options->n_threads = n_threads;
}
#endif
else if (streq (p[0], "shaper") && p[1])
{
#ifdef HAVE_GETTIMEOFDAY
int shaper;
VERIFY_PERMISSION (OPT_P_SHAPER);
shaper = atoi (p[1]);
if (shaper < SHAPER_MIN || shaper > SHAPER_MAX)
{
msg (msglevel, "Bad shaper value, must be between %d and %d",
SHAPER_MIN, SHAPER_MAX);
goto err;
}
options->shaper = shaper;
#else /* HAVE_GETTIMEOFDAY */
VERIFY_PERMISSION (OPT_P_GENERAL);
msg (msglevel, "--shaper requires the gettimeofday() function which is missing");
goto err;
#endif /* HAVE_GETTIMEOFDAY */
}
else if (streq (p[0], "port") && p[1])
{
int port;
VERIFY_PERMISSION (OPT_P_GENERAL|OPT_P_CONNECTION);
port = atoi (p[1]);
if (!legal_ipv4_port (port))
{
msg (msglevel, "Bad port number: %s", p[1]);
goto err;
}
options->ce.port_option_used = true;
options->ce.local_port = options->ce.remote_port = port;
}
else if (streq (p[0], "lport") && p[1])
{
int port;
VERIFY_PERMISSION (OPT_P_GENERAL|OPT_P_CONNECTION);
port = atoi (p[1]);
if (!legal_ipv4_port (port))
{
msg (msglevel, "Bad local port number: %s", p[1]);
goto err;
}
options->ce.local_port_defined = true;
options->ce.port_option_used = true;
options->ce.local_port = port;
}
else if (streq (p[0], "rport") && p[1])
{
int port;
VERIFY_PERMISSION (OPT_P_GENERAL|OPT_P_CONNECTION);
port = atoi (p[1]);
if (!legal_ipv4_port (port))
{
msg (msglevel, "Bad remote port number: %s", p[1]);
goto err;
}
options->ce.port_option_used = true;
options->ce.remote_port = port;
}
else if (streq (p[0], "bind"))
{
VERIFY_PERMISSION (OPT_P_GENERAL|OPT_P_CONNECTION);
options->ce.bind_defined = true;
}
else if (streq (p[0], "nobind"))
{
VERIFY_PERMISSION (OPT_P_GENERAL|OPT_P_CONNECTION);
options->ce.bind_local = false;
}
else if (streq (p[0], "fast-io"))
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->fast_io = true;
}
else if (streq (p[0], "inactive") && p[1])
{
VERIFY_PERMISSION (OPT_P_TIMER);
options->inactivity_timeout = positive_atoi (p[1]);
if (p[2])
options->inactivity_minimum_bytes = positive_atoi (p[2]);
}
else if (streq (p[0], "proto") && p[1])
{
int proto;
VERIFY_PERMISSION (OPT_P_GENERAL|OPT_P_CONNECTION);
proto = ascii2proto (p[1]);
if (proto < 0)
{
msg (msglevel, "Bad protocol: '%s'. Allowed protocols with --proto option: %s",
p[1],
proto2ascii_all (&gc));
goto err;
}
options->ce.proto = proto;
}
#ifdef GENERAL_PROXY_SUPPORT
else if (streq (p[0], "auto-proxy"))
{
char *error = NULL;
VERIFY_PERMISSION (OPT_P_GENERAL);
options->auto_proxy_info = get_proxy_settings (&error, &options->gc);
if (error)
msg (M_WARN, "PROXY: %s", error);
}
else if (streq (p[0], "show-proxy-settings"))
{
struct auto_proxy_info *pi;
char *error = NULL;
VERIFY_PERMISSION (OPT_P_GENERAL);
pi = get_proxy_settings (&error, &options->gc);
if (pi)
{
msg (M_INFO|M_NOPREFIX, "HTTP Server: %s", np(pi->http.server));
msg (M_INFO|M_NOPREFIX, "HTTP Port: %d", pi->http.port);
msg (M_INFO|M_NOPREFIX, "SOCKS Server: %s", np(pi->socks.server));
msg (M_INFO|M_NOPREFIX, "SOCKS Port: %d", pi->socks.port);
}
if (error)
msg (msglevel, "Proxy error: %s", error);
#ifdef WIN32
show_win_proxy_settings (M_INFO|M_NOPREFIX);
#endif
openvpn_exit (OPENVPN_EXIT_STATUS_GOOD); /* exit point */
}
#endif /* GENERAL_PROXY_SUPPORT */
#ifdef ENABLE_HTTP_PROXY
else if (streq (p[0], "http-proxy") && p[1])
{
struct http_proxy_options *ho;
VERIFY_PERMISSION (OPT_P_GENERAL|OPT_P_CONNECTION);
{
int port;
if (!p[2])
{
msg (msglevel, "http-proxy port number not defined");
goto err;
}
port = atoi (p[2]);
if (!legal_ipv4_port (port))
{
msg (msglevel, "Bad http-proxy port number: %s", p[2]);
goto err;
}
ho = init_http_options_if_undefined (options);
ho->server = p[1];
ho->port = port;
}
if (p[3])
{
if (streq (p[3], "auto"))
ho->auth_retry = true;
else
{
ho->auth_method_string = "basic";
ho->auth_file = p[3];
if (p[4])
{
ho->auth_method_string = p[4];
}
}
}
else
{
ho->auth_method_string = "none";
}
}
else if (streq (p[0], "http-proxy-retry"))
{
struct http_proxy_options *ho;
VERIFY_PERMISSION (OPT_P_GENERAL|OPT_P_CONNECTION);
ho = init_http_options_if_undefined (options);
ho->retry = true;
}
else if (streq (p[0], "http-proxy-timeout") && p[1])
{
struct http_proxy_options *ho;
VERIFY_PERMISSION (OPT_P_GENERAL|OPT_P_CONNECTION);
ho = init_http_options_if_undefined (options);
ho->timeout = positive_atoi (p[1]);
}
else if (streq (p[0], "http-proxy-option") && p[1])
{
struct http_proxy_options *ho;
VERIFY_PERMISSION (OPT_P_GENERAL|OPT_P_CONNECTION);
ho = init_http_options_if_undefined (options);
if (streq (p[1], "VERSION") && p[2])
{
ho->http_version = p[2];
}
else if (streq (p[1], "AGENT") && p[2])
{
ho->user_agent = p[2];
}
else
{
msg (msglevel, "Bad http-proxy-option or missing parameter: '%s'", p[1]);
}
}
#endif
#ifdef ENABLE_SOCKS
else if (streq (p[0], "socks-proxy") && p[1])
{
VERIFY_PERMISSION (OPT_P_GENERAL|OPT_P_CONNECTION);
if (p[2])
{
int port;
port = atoi (p[2]);
if (!legal_ipv4_port (port))
{
msg (msglevel, "Bad socks-proxy port number: %s", p[2]);
goto err;
}
options->ce.socks_proxy_port = port;
}
else
{
options->ce.socks_proxy_port = 1080;
}
options->ce.socks_proxy_server = p[1];
}
else if (streq (p[0], "socks-proxy-retry"))
{
VERIFY_PERMISSION (OPT_P_GENERAL|OPT_P_CONNECTION);
options->ce.socks_proxy_retry = true;
}
#endif
else if (streq (p[0], "keepalive") && p[1] && p[2])
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->keepalive_ping = atoi (p[1]);
options->keepalive_timeout = atoi (p[2]);
}
else if (streq (p[0], "ping") && p[1])
{
VERIFY_PERMISSION (OPT_P_TIMER);
options->ping_send_timeout = positive_atoi (p[1]);
}
else if (streq (p[0], "ping-exit") && p[1])
{
VERIFY_PERMISSION (OPT_P_TIMER);
options->ping_rec_timeout = positive_atoi (p[1]);
options->ping_rec_timeout_action = PING_EXIT;
}
else if (streq (p[0], "ping-restart") && p[1])
{
VERIFY_PERMISSION (OPT_P_TIMER);
options->ping_rec_timeout = positive_atoi (p[1]);
options->ping_rec_timeout_action = PING_RESTART;
}
else if (streq (p[0], "ping-timer-rem"))
{
VERIFY_PERMISSION (OPT_P_TIMER);
options->ping_timer_remote = true;
}
#ifdef ENABLE_OCC
else if (streq (p[0], "explicit-exit-notify"))
{
VERIFY_PERMISSION (OPT_P_EXPLICIT_NOTIFY);
if (p[1])
{
options->explicit_exit_notification = positive_atoi (p[1]);
}
else
{
options->explicit_exit_notification = 1;
}
}
#endif
else if (streq (p[0], "persist-tun"))
{
VERIFY_PERMISSION (OPT_P_PERSIST);
options->persist_tun = true;
}
else if (streq (p[0], "persist-key"))
{
VERIFY_PERMISSION (OPT_P_PERSIST);
options->persist_key = true;
}
else if (streq (p[0], "persist-local-ip"))
{
VERIFY_PERMISSION (OPT_P_PERSIST_IP);
options->persist_local_ip = true;
}
else if (streq (p[0], "persist-remote-ip"))
{
VERIFY_PERMISSION (OPT_P_PERSIST_IP);
options->persist_remote_ip = true;
}
else if (streq (p[0], "route") && p[1])
{
VERIFY_PERMISSION (OPT_P_ROUTE);
rol_check_alloc (options);
add_route_to_option_list (options->routes, p[1], p[2], p[3], p[4]);
}
else if (streq (p[0], "route-gateway") && p[1])
{
VERIFY_PERMISSION (OPT_P_ROUTE_EXTRAS);
options->route_default_gateway = p[1];
}
else if (streq (p[0], "route-metric") && p[1])
{
VERIFY_PERMISSION (OPT_P_ROUTE);
options->route_default_metric = positive_atoi (p[1]);
}
else if (streq (p[0], "route-delay"))
{
VERIFY_PERMISSION (OPT_P_ROUTE_EXTRAS);
options->route_delay_defined = true;
if (p[1])
{
options->route_delay = positive_atoi (p[1]);
if (p[2])
{
options->route_delay_window = positive_atoi (p[2]);
}
}
else
{
options->route_delay = 0;
}
}
else if (streq (p[0], "route-up") && p[1])
{
VERIFY_PERMISSION (OPT_P_SCRIPT);
if (!no_more_than_n_args (msglevel, p, 2, NM_QUOTE_HINT))
goto err;
options->route_script = p[1];
}
else if (streq (p[0], "route-noexec"))
{
VERIFY_PERMISSION (OPT_P_SCRIPT);
options->route_noexec = true;
}
else if (streq (p[0], "route-nopull"))
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->route_nopull = true;
}
else if (streq (p[0], "redirect-gateway"))
{
int j;
VERIFY_PERMISSION (OPT_P_ROUTE);
rol_check_alloc (options);
for (j = 1; j < MAX_PARMS && p[j] != NULL; ++j)
{
if (streq (p[j], "local"))
options->routes->flags |= RG_LOCAL;
else if (streq (p[j], "def1"))
options->routes->flags |= RG_DEF1;
else if (streq (p[j], "bypass-dhcp"))
options->routes->flags |= RG_BYPASS_DHCP;
else if (streq (p[j], "bypass-dns"))
options->routes->flags |= RG_BYPASS_DNS;
else
{
msg (msglevel, "unknown --redirect-gateway flag: %s", p[j]);
goto err;
}
}
options->routes->flags |= RG_ENABLE;
}
else if (streq (p[0], "setenv") && p[1])
{
VERIFY_PERMISSION (OPT_P_GENERAL);
setenv_str (es, p[1], p[2] ? p[2] : "");
}
else if (streq (p[0], "setenv-safe") && p[1])
{
VERIFY_PERMISSION (OPT_P_SETENV);
setenv_str_safe (es, p[1], p[2] ? p[2] : "");
}
else if (streq (p[0], "script-security") && p[1])
{
VERIFY_PERMISSION (OPT_P_GENERAL);
script_security = atoi (p[1]);
}
else if (streq (p[0], "mssfix"))
{
VERIFY_PERMISSION (OPT_P_GENERAL);
if (p[1])
{
options->mssfix = positive_atoi (p[1]);
}
else
options->mssfix_default = true;
}
#ifdef ENABLE_OCC
else if (streq (p[0], "disable-occ"))
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->occ = false;
}
#endif
#if P2MP
#if P2MP_SERVER
else if (streq (p[0], "server") && p[1] && p[2])
{
const int lev = M_WARN;
bool error = false;
in_addr_t network, netmask;
VERIFY_PERMISSION (OPT_P_GENERAL);
network = get_ip_addr (p[1], lev, &error);
netmask = get_ip_addr (p[2], lev, &error);
if (error || !network || !netmask)
{
msg (msglevel, "error parsing --server parameters");
goto err;
}
options->server_defined = true;
options->server_network = network;
options->server_netmask = netmask;
if (p[3])
{
if (streq (p[3], "nopool"))
options->server_flags |= SF_NOPOOL;
else
{
msg (msglevel, "error parsing --server: %s is not a recognized flag", p[3]);
goto err;
}
}
}
else if (streq (p[0], "server-bridge") && p[1] && p[2] && p[3] && p[4])
{
const int lev = M_WARN;
bool error = false;
in_addr_t ip, netmask, pool_start, pool_end;
VERIFY_PERMISSION (OPT_P_GENERAL);
ip = get_ip_addr (p[1], lev, &error);
netmask = get_ip_addr (p[2], lev, &error);
pool_start = get_ip_addr (p[3], lev, &error);
pool_end = get_ip_addr (p[4], lev, &error);
if (error || !ip || !netmask || !pool_start || !pool_end)
{
msg (msglevel, "error parsing --server-bridge parameters");
goto err;
}
options->server_bridge_defined = true;
options->server_bridge_ip = ip;
options->server_bridge_netmask = netmask;
options->server_bridge_pool_start = pool_start;
options->server_bridge_pool_end = pool_end;
}
else if (streq (p[0], "push") && p[1])
{
VERIFY_PERMISSION (OPT_P_PUSH);
push_options (options, &p[1], msglevel, &options->gc);
}
else if (streq (p[0], "push-reset"))
{
VERIFY_PERMISSION (OPT_P_INSTANCE);
push_reset (options);
}
else if (streq (p[0], "ifconfig-pool") && p[1] && p[2])
{
const int lev = M_WARN;
bool error = false;
in_addr_t start, end, netmask=0;
VERIFY_PERMISSION (OPT_P_GENERAL);
start = get_ip_addr (p[1], lev, &error);
end = get_ip_addr (p[2], lev, &error);
if (p[3])
{
netmask = get_ip_addr (p[3], lev, &error);
}
if (error)
{
msg (msglevel, "error parsing --ifconfig-pool parameters");
goto err;
}
if (!ifconfig_pool_verify_range (msglevel, start, end))
goto err;
options->ifconfig_pool_defined = true;
options->ifconfig_pool_start = start;
options->ifconfig_pool_end = end;
options->ifconfig_pool_netmask = netmask;
}
else if (streq (p[0], "ifconfig-pool-persist") && p[1])
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->ifconfig_pool_persist_filename = p[1];
if (p[2])
{
options->ifconfig_pool_persist_refresh_freq = positive_atoi (p[2]);
}
}
else if (streq (p[0], "ifconfig-pool-linear"))
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->topology = TOP_P2P;
}
else if (streq (p[0], "hash-size") && p[1] && p[2])
{
int real, virtual;
VERIFY_PERMISSION (OPT_P_GENERAL);
real = atoi (p[1]);
virtual = atoi (p[2]);
if (real < 1 || virtual < 1)
{
msg (msglevel, "--hash-size sizes must be >= 1 (preferably a power of 2)");
goto err;
}
options->real_hash_size = real;
options->virtual_hash_size = real;
}
else if (streq (p[0], "connect-freq") && p[1] && p[2])
{
int cf_max, cf_per;
VERIFY_PERMISSION (OPT_P_GENERAL);
cf_max = atoi (p[1]);
cf_per = atoi (p[2]);
if (cf_max < 0 || cf_per < 0)
{
msg (msglevel, "--connect-freq parms must be > 0");
goto err;
}
options->cf_max = cf_max;
options->cf_per = cf_per;
}
else if (streq (p[0], "max-clients") && p[1])
{
int max_clients;
VERIFY_PERMISSION (OPT_P_GENERAL);
max_clients = atoi (p[1]);
if (max_clients < 0)
{
msg (msglevel, "--max-clients must be at least 1");
goto err;
}
options->max_clients = max_clients;
}
else if (streq (p[0], "max-routes-per-client") && p[1])
{
VERIFY_PERMISSION (OPT_P_INHERIT);
options->max_routes_per_client = max_int (atoi (p[1]), 1);
}
else if (streq (p[0], "client-cert-not-required"))
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->client_cert_not_required = true;
}
else if (streq (p[0], "username-as-common-name"))
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->username_as_common_name = true;
}
else if (streq (p[0], "auth-user-pass-verify") && p[1])
{
VERIFY_PERMISSION (OPT_P_SCRIPT);
if (!no_more_than_n_args (msglevel, p, 3, NM_QUOTE_HINT))
goto err;
if (p[2])
{
if (streq (p[2], "via-env"))
options->auth_user_pass_verify_script_via_file = false;
else if (streq (p[2], "via-file"))
options->auth_user_pass_verify_script_via_file = true;
else
{
msg (msglevel, "second parm to --auth-user-pass-verify must be 'via-env' or 'via-file'");
goto err;
}
}
else
{
msg (msglevel, "--auth-user-pass-verify requires a second parameter ('via-env' or 'via-file')");
goto err;
}
options->auth_user_pass_verify_script = p[1];
}
else if (streq (p[0], "client-connect") && p[1])
{
VERIFY_PERMISSION (OPT_P_SCRIPT);
if (!no_more_than_n_args (msglevel, p, 2, NM_QUOTE_HINT))
goto err;
options->client_connect_script = p[1];
}
else if (streq (p[0], "client-disconnect") && p[1])
{
VERIFY_PERMISSION (OPT_P_SCRIPT);
if (!no_more_than_n_args (msglevel, p, 2, NM_QUOTE_HINT))
goto err;
options->client_disconnect_script = p[1];
}
else if (streq (p[0], "learn-address") && p[1])
{
VERIFY_PERMISSION (OPT_P_SCRIPT);
if (!no_more_than_n_args (msglevel, p, 2, NM_QUOTE_HINT))
goto err;
options->learn_address_script = p[1];
}
else if (streq (p[0], "tmp-dir") && p[1])
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->tmp_dir = p[1];
}
else if (streq (p[0], "client-config-dir") && p[1])
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->client_config_dir = p[1];
}
else if (streq (p[0], "ccd-exclusive"))
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->ccd_exclusive = true;
}
else if (streq (p[0], "bcast-buffers") && p[1])
{
int n_bcast_buf;
VERIFY_PERMISSION (OPT_P_GENERAL);
n_bcast_buf = atoi (p[1]);
if (n_bcast_buf < 1)
msg (msglevel, "--bcast-buffers parameter must be > 0");
options->n_bcast_buf = n_bcast_buf;
}
else if (streq (p[0], "tcp-queue-limit") && p[1])
{
int tcp_queue_limit;
VERIFY_PERMISSION (OPT_P_GENERAL);
tcp_queue_limit = atoi (p[1]);
if (tcp_queue_limit < 1)
msg (msglevel, "--tcp-queue-limit parameter must be > 0");
options->tcp_queue_limit = tcp_queue_limit;
}
#if PORT_SHARE
else if (streq (p[0], "port-share") && p[1] && p[2])
{
int port;
VERIFY_PERMISSION (OPT_P_GENERAL);
port = atoi (p[2]);
if (!legal_ipv4_port (port))
{
msg (msglevel, "port number associated with --port-share directive is out of range");
goto err;
}
options->port_share_host = p[1];
options->port_share_port = port;
}
#endif
else if (streq (p[0], "client-to-client"))
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->enable_c2c = true;
}
else if (streq (p[0], "duplicate-cn"))
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->duplicate_cn = true;
}
else if (streq (p[0], "iroute") && p[1])
{
const char *netmask = NULL;
VERIFY_PERMISSION (OPT_P_INSTANCE);
if (p[2])
{
netmask = p[2];
}
option_iroute (options, p[1], netmask, msglevel);
}
else if (streq (p[0], "ifconfig-push") && p[1] && p[2])
{
in_addr_t local, remote_netmask;
VERIFY_PERMISSION (OPT_P_INSTANCE);
local = getaddr (GETADDR_HOST_ORDER|GETADDR_RESOLVE, p[1], 0, NULL, NULL);
remote_netmask = getaddr (GETADDR_HOST_ORDER|GETADDR_RESOLVE, p[2], 0, NULL, NULL);
if (local && remote_netmask)
{
options->push_ifconfig_defined = true;
options->push_ifconfig_local = local;
options->push_ifconfig_remote_netmask = remote_netmask;
}
else
{
msg (msglevel, "cannot parse --ifconfig-push addresses");
goto err;
}
}
else if (streq (p[0], "ifconfig-push-constraint") && p[1] && p[2])
{
in_addr_t network, netmask;
VERIFY_PERMISSION (OPT_P_GENERAL);
network = getaddr (GETADDR_HOST_ORDER|GETADDR_RESOLVE, p[1], 0, NULL, NULL);
netmask = getaddr (GETADDR_HOST_ORDER, p[2], 0, NULL, NULL);
if (network && netmask)
{
options->push_ifconfig_constraint_defined = true;
options->push_ifconfig_constraint_network = network;
options->push_ifconfig_constraint_netmask = netmask;
}
else
{
msg (msglevel, "cannot parse --ifconfig-push-constraint addresses");
goto err;
}
}
else if (streq (p[0], "disable"))
{
VERIFY_PERMISSION (OPT_P_INSTANCE);
options->disable = true;
}
#endif /* P2MP_SERVER */
else if (streq (p[0], "client"))
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->client = true;
}
else if (streq (p[0], "pull"))
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->pull = true;
}
else if (streq (p[0], "auth-user-pass"))
{
VERIFY_PERMISSION (OPT_P_GENERAL);
if (p[1])
{
options->auth_user_pass_file = p[1];
}
else
options->auth_user_pass_file = "stdin";
}
else if (streq (p[0], "auth-retry") && p[1])
{
VERIFY_PERMISSION (OPT_P_GENERAL);
auth_retry_set (msglevel, p[1]);
}
#endif
#ifdef WIN32
else if (streq (p[0], "win-sys") && p[1])
{
VERIFY_PERMISSION (OPT_P_GENERAL);
if (streq (p[1], "env"))
set_win_sys_path_via_env (es);
else
set_win_sys_path (p[1], es);
}
else if (streq (p[0], "route-method") && p[1])
{
VERIFY_PERMISSION (OPT_P_ROUTE_EXTRAS);
if (streq (p[1], "adaptive"))
options->route_method = ROUTE_METHOD_ADAPTIVE;
else if (streq (p[1], "ipapi"))
options->route_method = ROUTE_METHOD_IPAPI;
else if (streq (p[1], "exe"))
options->route_method = ROUTE_METHOD_EXE;
else
{
msg (msglevel, "--route method must be 'adaptive', 'ipapi', or 'exe'");
goto err;
}
}
else if (streq (p[0], "ip-win32") && p[1])
{
const int index = ascii2ipset (p[1]);
struct tuntap_options *to = &options->tuntap_options;
VERIFY_PERMISSION (OPT_P_IPWIN32);
if (index < 0)
{
msg (msglevel,
"Bad --ip-win32 method: '%s'. Allowed methods: %s",
p[1],
ipset2ascii_all (&gc));
goto err;
}
if (index == IPW32_SET_ADAPTIVE)
options->route_delay_window = IPW32_SET_ADAPTIVE_DELAY_WINDOW;
if (index == IPW32_SET_DHCP_MASQ)
{
if (p[2])
{
if (!streq (p[2], "default"))
{
int offset = atoi (p[2]);
if (!(offset > -256 && offset < 256))
{
msg (msglevel, "--ip-win32 dynamic [offset] [lease-time]: offset (%d) must be > -256 and < 256", offset);
goto err;
}
to->dhcp_masq_custom_offset = true;
to->dhcp_masq_offset = offset;
}
if (p[3])
{
const int min_lease = 30;
int lease_time;
lease_time = atoi (p[3]);
if (lease_time < min_lease)
{
msg (msglevel, "--ip-win32 dynamic [offset] [lease-time]: lease time parameter (%d) must be at least %d seconds", lease_time, min_lease);
goto err;
}
to->dhcp_lease_time = lease_time;
}
}
}
to->ip_win32_type = index;
to->ip_win32_defined = true;
}
else if (streq (p[0], "dhcp-option") && p[1])
{
struct tuntap_options *o = &options->tuntap_options;
VERIFY_PERMISSION (OPT_P_IPWIN32);
if (streq (p[1], "DOMAIN") && p[2])
{
o->domain = p[2];
}
else if (streq (p[1], "NBS") && p[2])
{
o->netbios_scope = p[2];
}
else if (streq (p[1], "NBT") && p[2])
{
int t;
t = atoi (p[2]);
if (!(t == 1 || t == 2 || t == 4 || t == 8))
{
msg (msglevel, "--dhcp-option NBT: parameter (%d) must be 1, 2, 4, or 8", t);
goto err;
}
o->netbios_node_type = t;
}
else if (streq (p[1], "DNS") && p[2])
{
dhcp_option_address_parse ("DNS", p[2], o->dns, &o->dns_len, msglevel);
}
else if (streq (p[1], "WINS") && p[2])
{
dhcp_option_address_parse ("WINS", p[2], o->wins, &o->wins_len, msglevel);
}
else if (streq (p[1], "NTP") && p[2])
{
dhcp_option_address_parse ("NTP", p[2], o->ntp, &o->ntp_len, msglevel);
}
else if (streq (p[1], "NBDD") && p[2])
{
dhcp_option_address_parse ("NBDD", p[2], o->nbdd, &o->nbdd_len, msglevel);
}
else if (streq (p[1], "DISABLE-NBT"))
{
o->disable_nbt = 1;
}
else
{
msg (msglevel, "--dhcp-option: unknown option type '%s' or missing parameter", p[1]);
goto err;
}
o->dhcp_options = true;
}
else if (streq (p[0], "show-adapters"))
{
VERIFY_PERMISSION (OPT_P_GENERAL);
show_tap_win32_adapters (M_INFO|M_NOPREFIX, M_WARN|M_NOPREFIX);
openvpn_exit (OPENVPN_EXIT_STATUS_GOOD); /* exit point */
}
else if (streq (p[0], "show-net"))
{
VERIFY_PERMISSION (OPT_P_GENERAL);
show_routes (M_INFO|M_NOPREFIX);
show_adapters (M_INFO|M_NOPREFIX);
openvpn_exit (OPENVPN_EXIT_STATUS_GOOD); /* exit point */
}
else if (streq (p[0], "show-net-up"))
{
VERIFY_PERMISSION (OPT_P_UP);
options->show_net_up = true;
}
else if (streq (p[0], "tap-sleep") && p[1])
{
int s;
VERIFY_PERMISSION (OPT_P_IPWIN32);
s = atoi (p[1]);
if (s < 0 || s >= 256)
{
msg (msglevel, "--tap-sleep parameter must be between 0 and 255");
goto err;
}
options->tuntap_options.tap_sleep = s;
}
else if (streq (p[0], "dhcp-renew"))
{
VERIFY_PERMISSION (OPT_P_IPWIN32);
options->tuntap_options.dhcp_renew = true;
}
else if (streq (p[0], "dhcp-pre-release"))
{
VERIFY_PERMISSION (OPT_P_IPWIN32);
options->tuntap_options.dhcp_pre_release = true;
}
else if (streq (p[0], "dhcp-release"))
{
VERIFY_PERMISSION (OPT_P_IPWIN32);
options->tuntap_options.dhcp_release = true;
}
else if (streq (p[0], "show-valid-subnets"))
{
VERIFY_PERMISSION (OPT_P_GENERAL);
show_valid_win32_tun_subnets ();
openvpn_exit (OPENVPN_EXIT_STATUS_USAGE); /* exit point */
}
else if (streq (p[0], "pause-exit"))
{
VERIFY_PERMISSION (OPT_P_GENERAL);
set_pause_exit_win32 ();
}
else if (streq (p[0], "service") && p[1])
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->exit_event_name = p[1];
if (p[2])
{
options->exit_event_initial_state = (atoi(p[2]) != 0);
}
}
else if (streq (p[0], "allow-nonadmin"))
{
VERIFY_PERMISSION (OPT_P_GENERAL);
tap_allow_nonadmin_access (p[1]);
openvpn_exit (OPENVPN_EXIT_STATUS_GOOD); /* exit point */
}
else if (streq (p[0], "user") && p[1])
{
VERIFY_PERMISSION (OPT_P_GENERAL);
msg (M_WARN, "NOTE: --user option is not implemented on Windows");
}
else if (streq (p[0], "group") && p[1])
{
VERIFY_PERMISSION (OPT_P_GENERAL);
msg (M_WARN, "NOTE: --group option is not implemented on Windows");
}
#else
else if (streq (p[0], "user") && p[1])
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->username = p[1];
}
else if (streq (p[0], "group") && p[1])
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->groupname = p[1];
}
else if (streq (p[0], "dhcp-option") && p[1])
{
VERIFY_PERMISSION (OPT_P_IPWIN32);
foreign_option (options, p, 3, es);
}
else if (streq (p[0], "route-method") && p[1]) /* ignore when pushed to non-Windows OS */
{
VERIFY_PERMISSION (OPT_P_ROUTE_EXTRAS);
}
#endif
#if PASSTOS_CAPABILITY
else if (streq (p[0], "passtos"))
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->passtos = true;
}
#endif
#ifdef USE_LZO
else if (streq (p[0], "comp-lzo"))
{
VERIFY_PERMISSION (OPT_P_COMP);
if (p[1])
{
if (streq (p[1], "yes"))
options->lzo = LZO_SELECTED|LZO_ON;
else if (streq (p[1], "no"))
options->lzo = LZO_SELECTED;
else if (streq (p[1], "adaptive"))
options->lzo = LZO_SELECTED|LZO_ON|LZO_ADAPTIVE;
else
{
msg (msglevel, "bad comp-lzo option: %s -- must be 'yes', 'no', or 'adaptive'", p[1]);
goto err;
}
}
else
options->lzo = LZO_SELECTED|LZO_ON|LZO_ADAPTIVE;
}
else if (streq (p[0], "comp-noadapt"))
{
VERIFY_PERMISSION (OPT_P_COMP);
options->lzo &= ~LZO_ADAPTIVE;
}
#endif /* USE_LZO */
#ifdef USE_CRYPTO
else if (streq (p[0], "show-ciphers"))
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->show_ciphers = true;
}
else if (streq (p[0], "show-digests"))
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->show_digests = true;
}
else if (streq (p[0], "show-engines"))
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->show_engines = true;
}
else if (streq (p[0], "key-direction") && p[1])
{
int key_direction;
key_direction = ascii2keydirection (msglevel, p[1]);
if (key_direction >= 0)
options->key_direction = key_direction;
else
goto err;
}
else if (streq (p[0], "secret") && p[1])
{
VERIFY_PERMISSION (OPT_P_GENERAL);
#if ENABLE_INLINE_FILES
if (streq (p[1], INLINE_FILE_TAG) && p[2])
{
options->shared_secret_file_inline = p[2];
}
else
#endif
if (p[2])
{
int key_direction;
key_direction = ascii2keydirection (msglevel, p[2]);
if (key_direction >= 0)
options->key_direction = key_direction;
else
goto err;
}
options->shared_secret_file = p[1];
}
else if (streq (p[0], "genkey"))
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->genkey = true;
}
else if (streq (p[0], "auth") && p[1])
{
VERIFY_PERMISSION (OPT_P_CRYPTO);
options->authname_defined = true;
options->authname = p[1];
if (streq (options->authname, "none"))
{
options->authname_defined = false;
options->authname = NULL;
}
}
else if (streq (p[0], "auth"))
{
VERIFY_PERMISSION (OPT_P_CRYPTO);
options->authname_defined = true;
}
else if (streq (p[0], "cipher") && p[1])
{
VERIFY_PERMISSION (OPT_P_CRYPTO);
options->ciphername_defined = true;
options->ciphername = p[1];
if (streq (options->ciphername, "none"))
{
options->ciphername_defined = false;
options->ciphername = NULL;
}
}
else if (streq (p[0], "cipher"))
{
VERIFY_PERMISSION (OPT_P_CRYPTO);
options->ciphername_defined = true;
}
else if (streq (p[0], "no-replay"))
{
VERIFY_PERMISSION (OPT_P_CRYPTO);
options->replay = false;
}
else if (streq (p[0], "replay-window"))
{
VERIFY_PERMISSION (OPT_P_CRYPTO);
if (p[1])
{
int replay_window;
replay_window = atoi (p[1]);
if (!(MIN_SEQ_BACKTRACK <= replay_window && replay_window <= MAX_SEQ_BACKTRACK))
{
msg (msglevel, "replay-window window size parameter (%d) must be between %d and %d",
replay_window,
MIN_SEQ_BACKTRACK,
MAX_SEQ_BACKTRACK);
goto err;
}
options->replay_window = replay_window;
if (p[2])
{
int replay_time;
replay_time = atoi (p[2]);
if (!(MIN_TIME_BACKTRACK <= replay_time && replay_time <= MAX_TIME_BACKTRACK))
{
msg (msglevel, "replay-window time window parameter (%d) must be between %d and %d",
replay_time,
MIN_TIME_BACKTRACK,
MAX_TIME_BACKTRACK);
goto err;
}
options->replay_time = replay_time;
}
}
else
{
msg (msglevel, "replay-window option is missing window size parameter");
goto err;
}
}
else if (streq (p[0], "mute-replay-warnings"))
{
VERIFY_PERMISSION (OPT_P_CRYPTO);
options->mute_replay_warnings = true;
}
else if (streq (p[0], "no-iv"))
{
VERIFY_PERMISSION (OPT_P_CRYPTO);
options->use_iv = false;
}
else if (streq (p[0], "replay-persist") && p[1])
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->packet_id_file = p[1];
}
else if (streq (p[0], "test-crypto"))
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->test_crypto = true;
}
else if (streq (p[0], "engine"))
{
VERIFY_PERMISSION (OPT_P_GENERAL);
if (p[1])
{
options->engine = p[1];
}
else
options->engine = "auto";
}
#ifdef HAVE_EVP_CIPHER_CTX_SET_KEY_LENGTH
else if (streq (p[0], "keysize") && p[1])
{
int keysize;
VERIFY_PERMISSION (OPT_P_CRYPTO);
keysize = atoi (p[1]) / 8;
if (keysize < 0 || keysize > MAX_CIPHER_KEY_LENGTH)
{
msg (msglevel, "Bad keysize: %s", p[1]);
goto err;
}
options->keysize = keysize;
}
#endif
#ifdef USE_SSL
else if (streq (p[0], "show-tls"))
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->show_tls_ciphers = true;
}
else if (streq (p[0], "tls-server"))
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->tls_server = true;
}
else if (streq (p[0], "tls-client"))
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->tls_client = true;
}
else if (streq (p[0], "ca") && p[1])
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->ca_file = p[1];
#if ENABLE_INLINE_FILES
if (streq (p[1], INLINE_FILE_TAG) && p[2])
{
options->ca_file_inline = p[2];
}
#endif
}
else if (streq (p[0], "capath") && p[1])
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->ca_path = p[1];
}
else if (streq (p[0], "dh") && p[1])
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->dh_file = p[1];
#if ENABLE_INLINE_FILES
if (streq (p[1], INLINE_FILE_TAG) && p[2])
{
options->dh_file_inline = p[2];
}
#endif
}
else if (streq (p[0], "cert") && p[1])
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->cert_file = p[1];
#if ENABLE_INLINE_FILES
if (streq (p[1], INLINE_FILE_TAG) && p[2])
{
options->cert_file_inline = p[2];
}
#endif
}
#ifdef WIN32
else if (streq (p[0], "cryptoapicert") && p[1])
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->cryptoapi_cert = p[1];
}
#endif
else if (streq (p[0], "key") && p[1])
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->priv_key_file = p[1];
#if ENABLE_INLINE_FILES
if (streq (p[1], INLINE_FILE_TAG) && p[2])
{
options->priv_key_file_inline = p[2];
}
#endif
}
else if (streq (p[0], "pkcs12") && p[1])
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->pkcs12_file = p[1];
}
else if (streq (p[0], "askpass"))
{
VERIFY_PERMISSION (OPT_P_GENERAL);
if (p[1])
{
options->key_pass_file = p[1];
}
else
options->key_pass_file = "stdin";
}
else if (streq (p[0], "auth-nocache"))
{
VERIFY_PERMISSION (OPT_P_GENERAL);
ssl_set_auth_nocache ();
}
else if (streq (p[0], "single-session"))
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->single_session = true;
}
else if (streq (p[0], "tls-exit"))
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->tls_exit = true;
}
else if (streq (p[0], "tls-cipher") && p[1])
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->cipher_list = p[1];
}
else if (streq (p[0], "crl-verify") && p[1])
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->crl_file = p[1];
}
else if (streq (p[0], "tls-verify") && p[1])
{
VERIFY_PERMISSION (OPT_P_SCRIPT);
if (!no_more_than_n_args (msglevel, p, 2, NM_QUOTE_HINT))
goto err;
options->tls_verify = string_substitute (p[1], ',', ' ', &options->gc);
}
else if (streq (p[0], "tls-remote") && p[1])
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->tls_remote = p[1];
}
else if (streq (p[0], "ns-cert-type") && p[1])
{
VERIFY_PERMISSION (OPT_P_GENERAL);
if (streq (p[1], "server"))
options->ns_cert_type = NS_SSL_SERVER;
else if (streq (p[1], "client"))
options->ns_cert_type = NS_SSL_CLIENT;
else
{
msg (msglevel, "--ns-cert-type must be 'client' or 'server'");
goto err;
}
}
#if OPENSSL_VERSION_NUMBER >= 0x00907000L
else if (streq (p[0], "remote-cert-ku"))
{
int j;
VERIFY_PERMISSION (OPT_P_GENERAL);
for (j = 1; j < MAX_PARMS && p[j] != NULL; ++j)
sscanf (p[j], "%x", &(options->remote_cert_ku[j-1]));
}
else if (streq (p[0], "remote-cert-eku") && p[1])
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->remote_cert_eku = p[1];
}
else if (streq (p[0], "remote-cert-tls") && p[1])
{
VERIFY_PERMISSION (OPT_P_GENERAL);
if (streq (p[1], "server"))
{
options->remote_cert_ku[0] = 0xa0;
options->remote_cert_ku[1] = 0x88;
options->remote_cert_eku = "TLS Web Server Authentication";
}
else if (streq (p[1], "client"))
{
options->remote_cert_ku[0] = 0x80;
options->remote_cert_ku[1] = 0x08;
options->remote_cert_ku[2] = 0x88;
options->remote_cert_eku = "TLS Web Client Authentication";
}
else
{
msg (msglevel, "--remote-cert-tls must be 'client' or 'server'");
goto err;
}
}
#endif /* OPENSSL_VERSION_NUMBER */
else if (streq (p[0], "tls-timeout") && p[1])
{
VERIFY_PERMISSION (OPT_P_TLS_PARMS);
options->tls_timeout = positive_atoi (p[1]);
}
else if (streq (p[0], "reneg-bytes") && p[1])
{
VERIFY_PERMISSION (OPT_P_TLS_PARMS);
options->renegotiate_bytes = positive_atoi (p[1]);
}
else if (streq (p[0], "reneg-pkts") && p[1])
{
VERIFY_PERMISSION (OPT_P_TLS_PARMS);
options->renegotiate_packets = positive_atoi (p[1]);
}
else if (streq (p[0], "reneg-sec") && p[1])
{
VERIFY_PERMISSION (OPT_P_TLS_PARMS);
options->renegotiate_seconds = positive_atoi (p[1]);
}
else if (streq (p[0], "hand-window") && p[1])
{
VERIFY_PERMISSION (OPT_P_TLS_PARMS);
options->handshake_window = positive_atoi (p[1]);
}
else if (streq (p[0], "tran-window") && p[1])
{
VERIFY_PERMISSION (OPT_P_TLS_PARMS);
options->transition_window = positive_atoi (p[1]);
}
else if (streq (p[0], "tls-auth") && p[1])
{
VERIFY_PERMISSION (OPT_P_GENERAL);
#if ENABLE_INLINE_FILES
if (streq (p[1], INLINE_FILE_TAG) && p[2])
{
options->tls_auth_file_inline = p[2];
}
else
#endif
if (p[2])
{
int key_direction;
key_direction = ascii2keydirection (msglevel, p[2]);
if (key_direction >= 0)
options->key_direction = key_direction;
else
goto err;
}
options->tls_auth_file = p[1];
}
else if (streq (p[0], "key-method") && p[1])
{
int key_method;
VERIFY_PERMISSION (OPT_P_GENERAL);
key_method = atoi (p[1]);
if (key_method < KEY_METHOD_MIN || key_method > KEY_METHOD_MAX)
{
msg (msglevel, "key_method parameter (%d) must be >= %d and <= %d",
key_method,
KEY_METHOD_MIN,
KEY_METHOD_MAX);
goto err;
}
options->key_method = key_method;
}
#endif /* USE_SSL */
#endif /* USE_CRYPTO */
#ifdef ENABLE_PKCS11
else if (streq (p[0], "show-pkcs11-ids") && p[1])
{
char *provider = p[1];
bool cert_private = (p[2] == NULL ? false : ( atoi (p[2]) != 0 ));
VERIFY_PERMISSION (OPT_P_GENERAL);
set_debug_level (options->verbosity, SDL_CONSTRAIN);
show_pkcs11_ids (provider, cert_private);
openvpn_exit (OPENVPN_EXIT_STATUS_GOOD); /* exit point */
}
else if (streq (p[0], "pkcs11-providers") && p[1])
{
int j;
VERIFY_PERMISSION (OPT_P_GENERAL);
for (j = 1; j < MAX_PARMS && p[j] != NULL; ++j)
options->pkcs11_providers[j-1] = p[j];
}
else if (streq (p[0], "pkcs11-protected-authentication"))
{
int j;
VERIFY_PERMISSION (OPT_P_GENERAL);
for (j = 1; j < MAX_PARMS && p[j] != NULL; ++j)
options->pkcs11_protected_authentication[j-1] = atoi (p[j]) != 0 ? 1 : 0;
}
else if (streq (p[0], "pkcs11-private-mode") && p[1])
{
int j;
VERIFY_PERMISSION (OPT_P_GENERAL);
for (j = 1; j < MAX_PARMS && p[j] != NULL; ++j)
sscanf (p[j], "%x", &(options->pkcs11_private_mode[j-1]));
}
else if (streq (p[0], "pkcs11-cert-private"))
{
int j;
VERIFY_PERMISSION (OPT_P_GENERAL);
for (j = 1; j < MAX_PARMS && p[j] != NULL; ++j)
options->pkcs11_cert_private[j-1] = atoi (p[j]) != 0 ? 1 : 0;
}
else if (streq (p[0], "pkcs11-pin-cache") && p[1])
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->pkcs11_pin_cache_period = atoi (p[1]);
}
else if (streq (p[0], "pkcs11-id") && p[1])
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->pkcs11_id = p[1];
}
else if (streq (p[0], "pkcs11-id-management"))
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->pkcs11_id_management = true;
}
#endif
#ifdef TUNSETPERSIST
else if (streq (p[0], "rmtun"))
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->persist_config = true;
options->persist_mode = 0;
}
else if (streq (p[0], "mktun"))
{
VERIFY_PERMISSION (OPT_P_GENERAL);
options->persist_config = true;
options->persist_mode = 1;
}
#endif
else
{
if (file)
msg (msglevel, "Unrecognized option or missing parameter(s) in %s:%d: %s (%s)", file, line, p[0], PACKAGE_VERSION);
else
msg (msglevel, "Unrecognized option or missing parameter(s): --%s (%s)", p[0], PACKAGE_VERSION);
}
err:
gc_free (&gc);
}
