/*
tincctl.c -- Controlling a running tincd
- Copyright (C) 2007-2012 Guus Sliepen <guus@tinc-vpn.org>
+ Copyright (C) 2007-2013 Guus Sliepen <guus@tinc-vpn.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
#include <getopt.h>
+#ifdef HAVE_READLINE
+#include "readline/readline.h"
+#include "readline/history.h"
+#endif
+
#include "xalloc.h"
#include "protocol.h"
#include "control_common.h"
+#include "crypto.h"
#include "ecdsagen.h"
#include "info.h"
+#include "invitation.h"
+#include "names.h"
#include "rsagen.h"
#include "utils.h"
#include "tincctl.h"
#include "top.h"
-#ifdef HAVE_MINGW
-#define mkdir(a, b) mkdir(a)
-#endif
-
-/* The name this program was run with. */
-static char *program_name = NULL;
+static char **orig_argv;
+static int orig_argc;
/* If nonzero, display usage information and exit. */
static bool show_help = false;
static bool show_version = false;
static char *name = NULL;
-static char *identname = NULL; /* program name for syslog */
-static char *pidfilename = NULL; /* pid file location */
-static char controlcookie[1024];
-char *netname = NULL;
-char *confbase = NULL;
-static char *tinc_conf = NULL;
-static char *hosts_dir = NULL;
+static char controlcookie[1025];
+char *tinc_conf = NULL;
+char *hosts_dir = NULL;
+struct timeval now;
// Horrible global variables...
static int pid = 0;
-static int fd = -1;
-static char line[4096];
+int fd = -1;
+char line[4096];
static int code;
static int req;
static int result;
static bool force = false;
-
-#ifdef HAVE_MINGW
-static struct WSAData wsa_state;
-#endif
+bool tty = true;
+bool confbasegiven = false;
+bool netnamegiven = false;
+char *scriptinterpreter = NULL;
+char *scriptextension = "";
static struct option const long_options[] = {
{"config", required_argument, NULL, 'c'},
- {"debug", optional_argument, NULL, 0},
- {"no-detach", no_argument, NULL, 0},
- {"mlock", no_argument, NULL, 0},
{"net", required_argument, NULL, 'n'},
{"help", no_argument, NULL, 1},
{"version", no_argument, NULL, 2},
- {"pidfile", required_argument, NULL, 5},
- {"logfile", required_argument, NULL, 0},
- {"bypass-security", no_argument, NULL, 0},
- {"chroot", no_argument, NULL, 0},
- {"user", required_argument, NULL, 0},
- {"option", required_argument, NULL, 0},
- {"force", no_argument, NULL, 6},
+ {"pidfile", required_argument, NULL, 3},
+ {"force", no_argument, NULL, 4},
{NULL, 0, NULL, 0}
};
}
static void usage(bool status) {
- if(status)
- fprintf(stderr, "Try `%s --help\' for more information.\n",
- program_name);
- else {
+ if(status) {
+ fprintf(stderr, "Try `%s --help\' for more information.\n", program_name);
+ } else {
printf("Usage: %s [options] command\n\n", program_name);
printf("Valid options are:\n"
" -c, --config=DIR Read configuration options from DIR.\n"
"\n"
"Valid commands are:\n"
" init [name] Create initial configuration files.\n"
- " config Change configuration:\n"
- " [set] VARIABLE VALUE - set VARIABLE to VALUE\n"
- " add VARIABLE VALUE - add VARIABLE with the given VALUE\n"
- " del VARIABLE [VALUE] - remove VARIABLE [only ones with watching VALUE]\n"
+ " get VARIABLE Print current value of VARIABLE\n"
+ " set VARIABLE VALUE Set VARIABLE to VALUE\n"
+ " add VARIABLE VALUE Add VARIABLE with the given VALUE\n"
+ " del VARIABLE [VALUE] Remove VARIABLE [only ones with watching VALUE]\n"
" start [tincd options] Start tincd.\n"
" stop Stop tincd.\n"
- " restart Restart tincd.\n"
+ " restart [tincd options] Restart tincd.\n"
" reload Partially reload configuration of running tincd.\n"
" pid Show PID of currently running tincd.\n"
" generate-keys [bits] Generate new RSA and ECDSA public/private keypairs.\n"
" generate-rsa-keys [bits] Generate a new RSA public/private keypair.\n"
" generate-ecdsa-keys Generate a new ECDSA public/private keypair.\n"
" dump Dump a list of one of the following things:\n"
- " nodes - all known nodes in the VPN\n"
+ " [reachable] nodes - all known nodes in the VPN\n"
" edges - all known connections in the VPN\n"
" subnets - all known subnets in the VPN\n"
" connections - all meta connections with ourself\n"
- " graph - graph of the VPN in dotty format\n"
+ " [di]graph - graph of the VPN in dotty format\n"
" info NODE|SUBNET|ADDRESS Give information about a particular NODE, SUBNET or ADDRESS.\n"
" purge Purge unreachable nodes\n"
" debug N Set debug level\n"
" export Export host configuration of local node to standard output\n"
" export-all Export all host configuration files to standard output\n"
" import [--force] Import host configuration file(s) from standard input\n"
+ " exchange [--force] Same as export followed by import\n"
+ " exchange-all [--force] Same as export-all followed by import\n"
+ " invite NODE [...] Generate an invitation for NODE\n"
+ " join INVITATION Join a VPN using an INVITIATION\n"
"\n");
printf("Report bugs to tinc@tinc-vpn.org.\n");
}
int r;
int option_index = 0;
- while((r = getopt_long(argc, argv, "c:n:Dd::Lo:RU:", long_options, &option_index)) != EOF) {
+ while((r = getopt_long(argc, argv, "+c:n:", long_options, &option_index)) != EOF) {
switch (r) {
- case 0: /* long option */
+ case 0: /* long option */
break;
- case 'c': /* config file */
+ case 'c': /* config file */
confbase = xstrdup(optarg);
+ confbasegiven = true;
break;
- case 'n': /* net name given */
+ case 'n': /* net name given */
netname = xstrdup(optarg);
break;
- case 1: /* show help */
+ case 1: /* show help */
show_help = true;
break;
- case 2: /* show version */
+ case 2: /* show version */
show_version = true;
break;
- case 5: /* open control socket here */
+ case 3: /* open control socket here */
pidfilename = xstrdup(optarg);
break;
- case 6:
+ case 4: /* force */
force = true;
break;
- case '?':
+ case '?': /* wrong options */
usage(true);
return false;
}
}
- if(!netname) {
- netname = getenv("NETNAME");
- if(netname)
- netname = xstrdup(netname);
+ if(!netname && (netname = getenv("NETNAME")))
+ netname = xstrdup(netname);
+
+ /* netname "." is special: a "top-level name" */
+
+ if(netname && (!*netname || !strcmp(netname, "."))) {
+ free(netname);
+ netname = NULL;
+ }
+
+ if(netname && (strpbrk(netname, "\\/") || *netname == '.')) {
+ fprintf(stderr, "Invalid character in netname!\n");
+ return false;
}
return true;
}
-static FILE *ask_and_open(const char *filename, const char *what, const char *mode) {
+/* Open a file with the desired permissions, minus the umask.
+ Also, if we want to create an executable file, we call fchmod()
+ to set the executable bits. */
+
+FILE *fopenmask(const char *filename, const char *mode, mode_t perms) {
+ mode_t mask = umask(0);
+ perms &= ~mask;
+ umask(~perms);
+ FILE *f = fopen(filename, mode);
+#ifdef HAVE_FCHMOD
+ if((perms & 0444) && f)
+ fchmod(fileno(f), perms);
+#endif
+ umask(mask);
+ return f;
+}
+
+static void disable_old_keys(const char *filename, const char *what) {
+ char tmpfile[PATH_MAX] = "";
+ char buf[1024];
+ bool disabled = false;
+ bool block = false;
+ bool error = false;
+ FILE *r, *w;
+
+ r = fopen(filename, "r");
+ if(!r)
+ return;
+
+ snprintf(tmpfile, sizeof tmpfile, "%s.tmp", filename);
+
+ struct stat st = {.st_mode = 0600};
+ fstat(fileno(r), &st);
+ w = fopenmask(tmpfile, "w", st.st_mode);
+
+ while(fgets(buf, sizeof buf, r)) {
+ if(!block && !strncmp(buf, "-----BEGIN ", 11)) {
+ if((strstr(buf, " EC ") && strstr(what, "ECDSA")) || (strstr(buf, " RSA ") && strstr(what, "RSA"))) {
+ disabled = true;
+ block = true;
+ }
+ }
+
+ bool ecdsapubkey = !strncasecmp(buf, "ECDSAPublicKey", 14) && strchr(" \t=", buf[14]) && strstr(what, "ECDSA");
+
+ if(ecdsapubkey)
+ disabled = true;
+
+ if(w) {
+ if(block || ecdsapubkey)
+ fputc('#', w);
+ if(fputs(buf, w) < 0) {
+ error = true;
+ break;
+ }
+ }
+
+ if(block && !strncmp(buf, "-----END ", 9))
+ block = false;
+ }
+
+ if(w)
+ if(fclose(w) < 0)
+ error = true;
+ if(ferror(r) || fclose(r) < 0)
+ error = true;
+
+ if(disabled) {
+ if(!w || error) {
+ fprintf(stderr, "Warning: old key(s) found, remove them by hand!\n");
+ if(w)
+ unlink(tmpfile);
+ return;
+ }
+
+#ifdef HAVE_MINGW
+ // We cannot atomically replace files on Windows.
+ char bakfile[PATH_MAX] = "";
+ snprintf(bakfile, sizeof bakfile, "%s.bak", filename);
+ if(rename(filename, bakfile) || rename(tmpfile, filename)) {
+ rename(bakfile, filename);
+#else
+ if(rename(tmpfile, filename)) {
+#endif
+ fprintf(stderr, "Warning: old key(s) found, remove them by hand!\n");
+ } else {
+#ifdef HAVE_MINGW
+ unlink(bakfile);
+#endif
+ fprintf(stderr, "Warning: old key(s) found and disabled.\n");
+ }
+ }
+
+ unlink(tmpfile);
+}
+
+static FILE *ask_and_open(const char *filename, const char *what, const char *mode, bool ask, mode_t perms) {
FILE *r;
char *directory;
char buf[PATH_MAX];
char buf2[PATH_MAX];
/* Check stdin and stdout */
- if(isatty(0) && isatty(1)) {
+ if(ask && tty) {
/* Ask for a file and/or directory name. */
- fprintf(stdout, "Please enter a file to save %s to [%s]: ",
- what, filename);
+ fprintf(stdout, "Please enter a file to save %s to [%s]: ", what, filename);
fflush(stdout);
if(fgets(buf, sizeof buf, stdin) == NULL) {
- fprintf(stderr, "Error while reading stdin: %s\n",
- strerror(errno));
+ fprintf(stderr, "Error while reading stdin: %s\n", strerror(errno));
return NULL;
}
#endif
/* The directory is a relative path or a filename. */
directory = get_current_dir_name();
- snprintf(buf2, sizeof buf2, "%s/%s", directory, filename);
+ snprintf(buf2, sizeof buf2, "%s" SLASH "%s", directory, filename);
filename = buf2;
}
- umask(0077); /* Disallow everything for group and other */
+ disable_old_keys(filename, what);
/* Open it first to keep the inode busy */
- r = fopen(filename, mode);
+ r = fopenmask(filename, mode, perms);
if(!r) {
fprintf(stderr, "Error opening file `%s': %s\n", filename, strerror(errno));
Generate a public/private ECDSA keypair, and ask for a file to store
them in.
*/
-static bool ecdsa_keygen() {
- ecdsa_t key;
+static bool ecdsa_keygen(bool ask) {
+ ecdsa_t *key;
FILE *f;
- char *filename;
+ char *pubname, *privname;
fprintf(stderr, "Generating ECDSA keypair:\n");
- if(!ecdsa_generate(&key)) {
+ if(!(key = ecdsa_generate())) {
fprintf(stderr, "Error during key generation!\n");
return false;
} else
fprintf(stderr, "Done.\n");
- xasprintf(&filename, "%s/ecdsa_key.priv", confbase);
- f = ask_and_open(filename, "private ECDSA key", "a");
+ xasprintf(&privname, "%s" SLASH "ecdsa_key.priv", confbase);
+ f = ask_and_open(privname, "private ECDSA key", "a", ask, 0600);
+ free(privname);
if(!f)
return false;
-
-#ifdef HAVE_FCHMOD
- /* Make it unreadable for others. */
- fchmod(fileno(f), 0600);
-#endif
-
- if(ftell(f))
- fprintf(stderr, "Appending key to existing contents.\nMake sure only one key is stored in the file.\n");
- ecdsa_write_pem_private_key(&key, f);
+ if(!ecdsa_write_pem_private_key(key, f)) {
+ fprintf(stderr, "Error writing private key!\n");
+ ecdsa_free(key);
+ fclose(f);
+ return false;
+ }
fclose(f);
- free(filename);
if(name)
- xasprintf(&filename, "%s/hosts/%s", confbase, name);
+ xasprintf(&pubname, "%s" SLASH "hosts" SLASH "%s", confbase, name);
else
- xasprintf(&filename, "%s/ecdsa_key.pub", confbase);
+ xasprintf(&pubname, "%s" SLASH "ecdsa_key.pub", confbase);
- f = ask_and_open(filename, "public ECDSA key", "a");
+ f = ask_and_open(pubname, "public ECDSA key", "a", ask, 0666);
+ free(pubname);
if(!f)
return false;
- if(ftell(f))
- fprintf(stderr, "Appending key to existing contents.\nMake sure only one key is stored in the file.\n");
-
- char *pubkey = ecdsa_get_base64_public_key(&key);
+ char *pubkey = ecdsa_get_base64_public_key(key);
fprintf(f, "ECDSAPublicKey = %s\n", pubkey);
free(pubkey);
fclose(f);
- free(filename);
+ ecdsa_free(key);
return true;
}
Generate a public/private RSA keypair, and ask for a file to store
them in.
*/
-static bool rsa_keygen(int bits) {
- rsa_t key;
+static bool rsa_keygen(int bits, bool ask) {
+ rsa_t *key;
FILE *f;
- char *filename;
+ char *pubname, *privname;
fprintf(stderr, "Generating %d bits keys:\n", bits);
- if(!rsa_generate(&key, bits, 0x10001)) {
+ if(!(key = rsa_generate(bits, 0x10001))) {
fprintf(stderr, "Error during key generation!\n");
return false;
} else
fprintf(stderr, "Done.\n");
- xasprintf(&filename, "%s/rsa_key.priv", confbase);
- f = ask_and_open(filename, "private RSA key", "a");
+ xasprintf(&privname, "%s" SLASH "rsa_key.priv", confbase);
+ f = ask_and_open(privname, "private RSA key", "a", ask, 0600);
+ free(privname);
if(!f)
return false;
-
-#ifdef HAVE_FCHMOD
- /* Make it unreadable for others. */
- fchmod(fileno(f), 0600);
-#endif
-
- if(ftell(f))
- fprintf(stderr, "Appending key to existing contents.\nMake sure only one key is stored in the file.\n");
- rsa_write_pem_private_key(&key, f);
+ if(!rsa_write_pem_private_key(key, f)) {
+ fprintf(stderr, "Error writing private key!\n");
+ fclose(f);
+ rsa_free(key);
+ return false;
+ }
fclose(f);
- free(filename);
if(name)
- xasprintf(&filename, "%s/hosts/%s", confbase, name);
+ xasprintf(&pubname, "%s" SLASH "hosts" SLASH "%s", confbase, name);
else
- xasprintf(&filename, "%s/rsa_key.pub", confbase);
+ xasprintf(&pubname, "%s" SLASH "rsa_key.pub", confbase);
- f = ask_and_open(filename, "public RSA key", "a");
+ f = ask_and_open(pubname, "public RSA key", "a", ask, 0666);
+ free(pubname);
if(!f)
return false;
- if(ftell(f))
- fprintf(stderr, "Appending key to existing contents.\nMake sure only one key is stored in the file.\n");
-
- rsa_write_pem_public_key(&key, f);
+ if(!rsa_write_pem_public_key(key, f)) {
+ fprintf(stderr, "Error writing public key!\n");
+ fclose(f);
+ rsa_free(key);
+ return false;
+ }
fclose(f);
- free(filename);
+ rsa_free(key);
return true;
}
-/*
- Set all files and paths according to netname
-*/
-static void make_names(void) {
-#ifdef HAVE_MINGW
- HKEY key;
- char installdir[1024] = "";
- long len = sizeof installdir;
-#endif
-
- if(netname)
- xasprintf(&identname, "tinc.%s", netname);
- else
- identname = xstrdup("tinc");
-
-#ifdef HAVE_MINGW
- if(!RegOpenKeyEx(HKEY_LOCAL_MACHINE, "SOFTWARE\\tinc", 0, KEY_READ, &key)) {
- if(!RegQueryValueEx(key, NULL, 0, 0, installdir, &len)) {
- if(!confbase) {
- if(netname)
- xasprintf(&confbase, "%s/%s", installdir, netname);
- else
- xasprintf(&confbase, "%s", installdir);
- }
- }
- if(!pidfilename)
- xasprintf(&pidfilename, "%s/pid", confbase);
- RegCloseKey(key);
- }
-
- if(!*installdir) {
-#endif
-
- if(!pidfilename)
- xasprintf(&pidfilename, "%s/run/%s.pid", LOCALSTATEDIR, identname);
-
- if(netname) {
- if(!confbase)
- xasprintf(&confbase, CONFDIR "/tinc/%s", netname);
- else
- fprintf(stderr, "Both netname and configuration directory given, using the latter...\n");
- } else {
- if(!confbase)
- xasprintf(&confbase, CONFDIR "/tinc");
- }
-
-#ifdef HAVE_MINGW
- }
-#endif
-
- xasprintf(&tinc_conf, "%s/tinc.conf", confbase);
- xasprintf(&hosts_dir, "%s/hosts", confbase);
-}
-
-static char buffer[4096];
-static size_t blen = 0;
+char buffer[4096];
+size_t blen = 0;
bool recvline(int fd, char *line, size_t len) {
char *newline = NULL;
+ if(!fd)
+ abort();
+
while(!(newline = memchr(buffer, '\n', blen))) {
int result = recv(fd, buffer + blen, sizeof buffer - blen, 0);
if(result == -1 && errno == EINTR)
return true;
}
-static bool recvdata(int fd, char *data, size_t len) {
+bool recvdata(int fd, char *data, size_t len) {
+ if(len == -1)
+ len = blen;
+
while(blen < len) {
int result = recv(fd, buffer + blen, sizeof buffer - blen, 0);
if(result == -1 && errno == EINTR)
blen -= result;
}
- return true;
+ return true;
}
static void pcap(int fd, FILE *out, int snaplen) {
}
#endif
-static bool connect_tincd() {
- if(fd >= 0)
- return true;
+bool connect_tincd(bool verbose) {
+ if(fd >= 0) {
+ fd_set r;
+ FD_ZERO(&r);
+ FD_SET(fd, &r);
+ struct timeval tv = {0, 0};
+ if(select(fd + 1, &r, NULL, NULL, &tv)) {
+ fprintf(stderr, "Previous connection to tincd lost, reconnecting.\n");
+ close(fd);
+ fd = -1;
+ } else {
+ return true;
+ }
+ }
FILE *f = fopen(pidfilename, "r");
if(!f) {
- fprintf(stderr, "Could not open pid file %s: %s\n", pidfilename, strerror(errno));
+ if(verbose)
+ fprintf(stderr, "Could not open pid file %s: %s\n", pidfilename, strerror(errno));
return false;
}
- char host[128];
- char port[128];
+ char host[129];
+ char port[129];
if(fscanf(f, "%20d %1024s %128s port %128s", &pid, controlcookie, host, port) != 4) {
- fprintf(stderr, "Could not parse pid file %s\n", pidfilename);
+ if(verbose)
+ fprintf(stderr, "Could not parse pid file %s\n", pidfilename);
+ fclose(f);
return false;
}
-#ifdef HAVE_MINGW
- if(WSAStartup(MAKEWORD(2, 2), &wsa_state)) {
- fprintf(stderr, "System call `%s' failed: %s", "WSAStartup", winerror(GetLastError()));
+ fclose(f);
+
+#ifndef HAVE_MINGW
+ struct sockaddr_un sa;
+ sa.sun_family = AF_UNIX;
+ strncpy(sa.sun_path, unixsocketname, sizeof sa.sun_path);
+
+ fd = socket(AF_UNIX, SOCK_STREAM, 0);
+ if(fd < 0) {
+ if(verbose)
+ fprintf(stderr, "Cannot create UNIX socket: %s\n", sockstrerror(sockerrno));
return false;
}
-#endif
+ if(connect(fd, (struct sockaddr *)&sa, sizeof sa) < 0) {
+ if(verbose)
+ fprintf(stderr, "Cannot connect to UNIX socket %s: %s\n", unixsocketname, sockstrerror(sockerrno));
+ close(fd);
+ fd = -1;
+ return false;
+ }
+#else
struct addrinfo hints = {
.ai_family = AF_UNSPEC,
.ai_socktype = SOCK_STREAM,
struct addrinfo *res = NULL;
if(getaddrinfo(host, port, &hints, &res) || !res) {
- fprintf(stderr, "Cannot resolve %s port %s: %s", host, port, strerror(errno));
+ if(verbose)
+ fprintf(stderr, "Cannot resolve %s port %s: %s", host, port, strerror(errno));
return false;
}
fd = socket(res->ai_family, SOCK_STREAM, IPPROTO_TCP);
if(fd < 0) {
- fprintf(stderr, "Cannot create TCP socket: %s\n", sockstrerror(sockerrno));
+ if(verbose)
+ fprintf(stderr, "Cannot create TCP socket: %s\n", sockstrerror(sockerrno));
return false;
}
unsigned long arg = 0;
if(ioctlsocket(fd, FIONBIO, &arg) != 0) {
- fprintf(stderr, "ioctlsocket failed: %s", sockstrerror(sockerrno));
+ if(verbose)
+ fprintf(stderr, "ioctlsocket failed: %s", sockstrerror(sockerrno));
}
#endif
if(connect(fd, res->ai_addr, res->ai_addrlen) < 0) {
- fprintf(stderr, "Cannot connect to %s port %s: %s\n", host, port, sockstrerror(sockerrno));
+ if(verbose)
+ fprintf(stderr, "Cannot connect to %s port %s: %s\n", host, port, sockstrerror(sockerrno));
+ close(fd);
+ fd = -1;
return false;
}
freeaddrinfo(res);
+#endif
char data[4096];
int version;
if(!recvline(fd, line, sizeof line) || sscanf(line, "%d %s %d", &code, data, &version) != 3 || code != 0) {
- fprintf(stderr, "Cannot read greeting from control socket: %s\n", sockstrerror(sockerrno));
+ if(verbose)
+ fprintf(stderr, "Cannot read greeting from control socket: %s\n", sockstrerror(sockerrno));
+ close(fd);
+ fd = -1;
return false;
}
sendline(fd, "%d ^%s %d", ID, controlcookie, TINC_CTL_VERSION_CURRENT);
-
+
if(!recvline(fd, line, sizeof line) || sscanf(line, "%d %d %d", &code, &version, &pid) != 3 || code != 4 || version != TINC_CTL_VERSION_CURRENT) {
- fprintf(stderr, "Could not fully establish control socket connection\n");
+ if(verbose)
+ fprintf(stderr, "Could not fully establish control socket connection\n");
+ close(fd);
+ fd = -1;
return false;
}
static int cmd_start(int argc, char *argv[]) {
- int i, j;
- char *c;
+ if(connect_tincd(false)) {
+ if(netname)
+ fprintf(stderr, "A tincd is already running for net `%s' with pid %d.\n", netname, pid);
+ else
+ fprintf(stderr, "A tincd is already running with pid %d.\n", pid);
+ return 0;
+ }
- argc += optind;
- argv -= optind;
- char *slash = strrchr(argv[0], '/');
+ char *c;
+ char *slash = strrchr(program_name, '/');
#ifdef HAVE_MINGW
- if ((c = strrchr(argv[0], '\\')) > slash)
+ if ((c = strrchr(program_name, '\\')) > slash)
slash = c;
#endif
if (slash++)
- xasprintf(&c, "%.*stincd", (int)(slash - argv[0]), argv[0]);
+ xasprintf(&c, "%.*stincd", (int)(slash - program_name), program_name);
else
c = "tincd";
- argv[0] = c;
+ int nargc = 0;
+ char **nargv = xzalloc((optind + argc) * sizeof *nargv);
- for(i = j = 1; argv[i]; ++i)
- if (i != optind && strcmp(argv[i], "--") != 0)
- argv[j++] = argv[i];
+ nargv[nargc++] = c;
+ for(int i = 1; i < optind; i++)
+ nargv[nargc++] = orig_argv[i];
+ for(int i = 1; i < argc; i++)
+ nargv[nargc++] = argv[i];
- argv[j] = NULL;
- execvp(c, argv);
- fprintf(stderr, "Could not start %s: %s\n", c, strerror(errno));
+#ifdef HAVE_MINGW
+ execvp(c, nargv);
+ fprintf(stderr, "Error starting %s: %s\n", c, strerror(errno));
return 1;
+#else
+ pid_t pid = fork();
+ if(pid == -1) {
+ fprintf(stderr, "Could not fork: %s\n", strerror(errno));
+ free(nargv);
+ return 1;
+ }
+
+ if(!pid)
+ exit(execvp(c, nargv));
+
+ free(nargv);
+
+ int status = -1, result;
+#ifdef SIGINT
+ signal(SIGINT, SIG_IGN);
+#endif
+ result = waitpid(pid, &status, 0);
+#ifdef SIGINT
+ signal(SIGINT, SIG_DFL);
+#endif
+
+ if(result != pid || !WIFEXITED(status) || WEXITSTATUS(status)) {
+ fprintf(stderr, "Error starting %s\n", c);
+ return 1;
+ }
+
+ return 0;
+#endif
}
static int cmd_stop(int argc, char *argv[]) {
+ if(argc > 1) {
+ fprintf(stderr, "Too many arguments!\n");
+ return 1;
+ }
+
#ifndef HAVE_MINGW
- if(!connect_tincd())
+ if(!connect_tincd(true)) {
+ if(pid) {
+ if(kill(pid, SIGTERM)) {
+ fprintf(stderr, "Could not send TERM signal to process with PID %u: %s\n", pid, strerror(errno));
+ return 1;
+ }
+
+ fprintf(stderr, "Sent TERM signal to process with PID %u.\n", pid);
+ waitpid(pid, NULL, 0);
+ return 0;
+ }
+
return 1;
+ }
sendline(fd, "%d %d", CONTROL, REQ_STOP);
- if(!recvline(fd, line, sizeof line) || sscanf(line, "%d %d %d", &code, &req, &result) != 3 || code != CONTROL || req != REQ_STOP || result) {
- fprintf(stderr, "Could not stop tinc daemon.\n");
- return 1;
+
+ while(recvline(fd, line, sizeof line)) {
+ // Wait for tincd to close the connection...
}
#else
if(!remove_service())
return 1;
#endif
+ close(fd);
+ pid = 0;
+ fd = -1;
+
return 0;
}
static int cmd_restart(int argc, char *argv[]) {
- return cmd_stop(argc, argv) ?: cmd_start(argc, argv);
+ cmd_stop(1, argv);
+ return cmd_start(argc, argv);
}
static int cmd_reload(int argc, char *argv[]) {
- if(!connect_tincd())
+ if(argc > 1) {
+ fprintf(stderr, "Too many arguments!\n");
+ return 1;
+ }
+
+ if(!connect_tincd(true))
return 1;
sendline(fd, "%d %d", CONTROL, REQ_RELOAD);
}
static int cmd_dump(int argc, char *argv[]) {
+ bool only_reachable = false;
+
+ if(argc > 2 && !strcasecmp(argv[1], "reachable")) {
+ if(strcasecmp(argv[2], "nodes")) {
+ fprintf(stderr, "`reachable' only supported for nodes.\n");
+ usage(true);
+ return 1;
+ }
+ only_reachable = true;
+ argv++;
+ argc--;
+ }
+
if(argc != 2) {
fprintf(stderr, "Invalid number of arguments.\n");
usage(true);
return 1;
}
- if(!connect_tincd())
+ if(!connect_tincd(true))
return 1;
- bool do_graph = false;
+ int do_graph = 0;
if(!strcasecmp(argv[1], "nodes"))
sendline(fd, "%d %d", CONTROL, REQ_DUMP_NODES);
else if(!strcasecmp(argv[1], "graph")) {
sendline(fd, "%d %d", CONTROL, REQ_DUMP_NODES);
sendline(fd, "%d %d", CONTROL, REQ_DUMP_EDGES);
- do_graph = true;
+ do_graph = 1;
+ } else if(!strcasecmp(argv[1], "digraph")) {
+ sendline(fd, "%d %d", CONTROL, REQ_DUMP_NODES);
+ sendline(fd, "%d %d", CONTROL, REQ_DUMP_EDGES);
+ do_graph = 2;
} else {
fprintf(stderr, "Unknown dump type '%s'.\n", argv[1]);
usage(true);
return 1;
}
- if(do_graph)
+ if(do_graph == 1)
+ printf("graph {\n");
+ else if(do_graph == 2)
printf("digraph {\n");
while(recvline(fd, line, sizeof line)) {
char node1[4096], node2[4096];
- int n = sscanf(line, "%d %d %s to %s", &code, &req, node1, node2);
+ int n = sscanf(line, "%d %d %s %s", &code, &req, node1, node2);
if(n == 2) {
if(do_graph && req == REQ_DUMP_NODES)
continue;
if(n < 2)
break;
- if(!do_graph)
- printf("%s\n", line + 5);
- else {
- if(req == REQ_DUMP_NODES)
- printf(" %s [label = \"%s\"];\n", node1, node1);
- else
- printf(" %s -> %s;\n", node1, node2);
+ char node[4096];
+ char from[4096];
+ char to[4096];
+ char subnet[4096];
+ char host[4096];
+ char port[4096];
+ char via[4096];
+ char nexthop[4096];
+ int cipher, digest, maclength, compression, distance, socket, weight;
+ short int pmtu, minmtu, maxmtu;
+ unsigned int options, status_int;
+ node_status_t status;
+ long int last_state_change;
+
+ switch(req) {
+ case REQ_DUMP_NODES: {
+ int n = sscanf(line, "%*d %*d %s %s port %s %d %d %d %d %x %x %s %s %d %hd %hd %hd %ld", node, host, port, &cipher, &digest, &maclength, &compression, &options, &status_int, nexthop, via, &distance, &pmtu, &minmtu, &maxmtu, &last_state_change);
+ if(n != 16) {
+ fprintf(stderr, "Unable to parse node dump from tincd: %s\n", line);
+ return 1;
+ }
+
+ memcpy(&status, &status_int, sizeof status);
+
+ if(do_graph) {
+ const char *color = "black";
+ if(!strcmp(host, "MYSELF"))
+ color = "green";
+ else if(!status.reachable)
+ color = "red";
+ else if(strcmp(via, node))
+ color = "orange";
+ else if(!status.validkey)
+ color = "black";
+ else if(minmtu > 0)
+ color = "green";
+ printf(" %s [label = \"%s\", color = \"%s\"%s];\n", node, node, color, strcmp(host, "MYSELF") ? "" : ", style = \"filled\"");
+ } else {
+ if(only_reachable && !status.reachable)
+ continue;
+ printf("%s at %s port %s cipher %d digest %d maclength %d compression %d options %x status %04x nexthop %s via %s distance %d pmtu %hd (min %hd max %hd)\n",
+ node, host, port, cipher, digest, maclength, compression, options, status_int, nexthop, via, distance, pmtu, minmtu, maxmtu);
+ }
+ } break;
+
+ case REQ_DUMP_EDGES: {
+ int n = sscanf(line, "%*d %*d %s %s %s port %s %x %d", from, to, host, port, &options, &weight);
+ if(n != 6) {
+ fprintf(stderr, "Unable to parse edge dump from tincd.\n");
+ return 1;
+ }
+
+ if(do_graph) {
+ float w = 1 + 65536.0 / weight;
+ if(do_graph == 1 && strcmp(node1, node2) > 0)
+ printf(" %s -- %s [w = %f, weight = %f];\n", node1, node2, w, w);
+ else if(do_graph == 2)
+ printf(" %s -> %s [w = %f, weight = %f];\n", node1, node2, w, w);
+ } else {
+ printf("%s to %s at %s port %s options %x weight %d\n", from, to, host, port, options, weight);
+ }
+ } break;
+
+ case REQ_DUMP_SUBNETS: {
+ int n = sscanf(line, "%*d %*d %s %s", subnet, node);
+ if(n != 2) {
+ fprintf(stderr, "Unable to parse subnet dump from tincd.\n");
+ return 1;
+ }
+ printf("%s owner %s\n", strip_weight(subnet), node);
+ } break;
+
+ case REQ_DUMP_CONNECTIONS: {
+ int n = sscanf(line, "%*d %*d %s %s port %s %x %d %x", node, host, port, &options, &socket, &status_int);
+ if(n != 6) {
+ fprintf(stderr, "Unable to parse connection dump from tincd.\n");
+ return 1;
+ }
+ printf("%s at %s port %s options %x socket %d status %x\n", node, host, port, options, socket, status_int);
+ } break;
+
+ default:
+ fprintf(stderr, "Unable to parse dump from tincd.\n");
+ return 1;
}
}
}
static int cmd_purge(int argc, char *argv[]) {
- if(!connect_tincd())
+ if(argc > 1) {
+ fprintf(stderr, "Too many arguments!\n");
+ return 1;
+ }
+
+ if(!connect_tincd(true))
return 1;
sendline(fd, "%d %d", CONTROL, REQ_PURGE);
return 1;
}
- if(!connect_tincd())
+ if(!connect_tincd(true))
return 1;
int debuglevel = atoi(argv[1]);
}
static int cmd_retry(int argc, char *argv[]) {
- if(!connect_tincd())
+ if(argc > 1) {
+ fprintf(stderr, "Too many arguments!\n");
+ return 1;
+ }
+
+ if(!connect_tincd(true))
return 1;
sendline(fd, "%d %d", CONTROL, REQ_RETRY);
return 1;
}
- if(!check_id(argv[2])) {
+ if(!check_id(argv[1])) {
fprintf(stderr, "Invalid name for node.\n");
return 1;
}
- if(!connect_tincd())
+ if(!connect_tincd(true))
return 1;
sendline(fd, "%d %d %s", CONTROL, REQ_CONNECT, argv[1]);
return 1;
}
- if(!check_id(argv[2])) {
+ if(!check_id(argv[1])) {
fprintf(stderr, "Invalid name for node.\n");
return 1;
}
- if(!connect_tincd())
+ if(!connect_tincd(true))
return 1;
sendline(fd, "%d %d %s", CONTROL, REQ_DISCONNECT, argv[1]);
}
static int cmd_top(int argc, char *argv[]) {
+ if(argc > 1) {
+ fprintf(stderr, "Too many arguments!\n");
+ return 1;
+ }
+
#ifdef HAVE_CURSES
- if(!connect_tincd())
+ if(!connect_tincd(true))
return 1;
top(fd);
return 0;
#else
- fprintf(stderr, "This version of tincctl was compiled without support for the curses library.\n");
+ fprintf(stderr, "This version of tinc was compiled without support for the curses library.\n");
return 1;
#endif
}
static int cmd_pcap(int argc, char *argv[]) {
- if(!connect_tincd())
+ if(argc > 2) {
+ fprintf(stderr, "Too many arguments!\n");
+ return 1;
+ }
+
+ if(!connect_tincd(true))
return 1;
pcap(fd, stdout, argc > 1 ? atoi(argv[1]) : 0);
return 0;
}
+#ifdef SIGINT
+static void sigint_handler(int sig) {
+ fprintf(stderr, "\n");
+ shutdown(fd, SHUT_RDWR);
+}
+#endif
+
static int cmd_log(int argc, char *argv[]) {
- if(!connect_tincd())
+ if(argc > 2) {
+ fprintf(stderr, "Too many arguments!\n");
+ return 1;
+ }
+
+ if(!connect_tincd(true))
return 1;
+#ifdef SIGINT
+ signal(SIGINT, sigint_handler);
+#endif
+
logcontrol(fd, stdout, argc > 1 ? atoi(argv[1]) : -1);
+
+#ifdef SIGINT
+ signal(SIGINT, SIG_DFL);
+#endif
+
+ close(fd);
+ fd = -1;
return 0;
}
static int cmd_pid(int argc, char *argv[]) {
- if(!connect_tincd())
+ if(argc > 1) {
+ fprintf(stderr, "Too many arguments!\n");
+ return 1;
+ }
+
+ if(!connect_tincd(true) && !pid)
return 1;
printf("%d\n", pid);
return 0;
}
-static int rstrip(char *value) {
+int rstrip(char *value) {
int len = strlen(value);
while(len && strchr("\t\r\n ", value[len - 1]))
value[--len] = 0;
return len;
}
-static char *get_my_name() {
+char *get_my_name(bool verbose) {
FILE *f = fopen(tinc_conf, "r");
if(!f) {
- fprintf(stderr, "Could not open %s: %s\n", tinc_conf, strerror(errno));
+ if(verbose)
+ fprintf(stderr, "Could not open %s: %s\n", tinc_conf, strerror(errno));
return NULL;
}
}
fclose(f);
- fprintf(stderr, "Could not find Name in %s.\n", tinc_conf);
+ if(verbose)
+ fprintf(stderr, "Could not find Name in %s.\n", tinc_conf);
return NULL;
}
-#define VAR_SERVER 1 /* Should be in tinc.conf */
-#define VAR_HOST 2 /* Can be in host config file */
-#define VAR_MULTIPLE 4 /* Multiple statements allowed */
-#define VAR_OBSOLETE 8 /* Should not be used anymore */
-
-static struct {
- const char *name;
- int type;
-} const variables[] = {
+const var_t variables[] = {
/* Server configuration */
{"AddressFamily", VAR_SERVER},
+ {"AutoConnect", VAR_SERVER | VAR_SAFE},
{"BindToAddress", VAR_SERVER | VAR_MULTIPLE},
{"BindToInterface", VAR_SERVER},
- {"Broadcast", VAR_SERVER},
- {"ConnectTo", VAR_SERVER | VAR_MULTIPLE},
+ {"Broadcast", VAR_SERVER | VAR_SAFE},
+ {"ConnectTo", VAR_SERVER | VAR_MULTIPLE | VAR_SAFE},
{"DecrementTTL", VAR_SERVER},
{"Device", VAR_SERVER},
{"DeviceType", VAR_SERVER},
{"ECDSAPrivateKeyFile", VAR_SERVER},
{"ExperimentalProtocol", VAR_SERVER},
{"Forwarding", VAR_SERVER},
- {"GraphDumpFile", VAR_SERVER},
+ {"GraphDumpFile", VAR_SERVER | VAR_OBSOLETE},
{"Hostnames", VAR_SERVER},
{"IffOneQueue", VAR_SERVER},
{"Interface", VAR_SERVER},
{"KeyExpire", VAR_SERVER},
+ {"ListenAddress", VAR_SERVER | VAR_MULTIPLE},
{"LocalDiscovery", VAR_SERVER},
{"MACExpire", VAR_SERVER},
+ {"MaxConnectionBurst", VAR_SERVER},
+ {"MaxOutputBufferSize", VAR_SERVER},
{"MaxTimeout", VAR_SERVER},
- {"Mode", VAR_SERVER},
+ {"Mode", VAR_SERVER | VAR_SAFE},
{"Name", VAR_SERVER},
{"PingInterval", VAR_SERVER},
{"PingTimeout", VAR_SERVER},
{"PrivateKey", VAR_SERVER | VAR_OBSOLETE},
{"PrivateKeyFile", VAR_SERVER},
{"ProcessPriority", VAR_SERVER},
+ {"Proxy", VAR_SERVER},
{"ReplayWindow", VAR_SERVER},
+ {"ScriptsExtension", VAR_SERVER},
+ {"ScriptsInterpreter", VAR_SERVER},
{"StrictSubnets", VAR_SERVER},
{"TunnelServer", VAR_SERVER},
{"UDPRcvBuf", VAR_SERVER},
{"UDPSndBuf", VAR_SERVER},
+ {"VDEGroup", VAR_SERVER},
+ {"VDEPort", VAR_SERVER},
/* Host configuration */
{"Address", VAR_HOST | VAR_MULTIPLE},
{"Cipher", VAR_SERVER | VAR_HOST},
{"ClampMSS", VAR_SERVER | VAR_HOST},
{"Compression", VAR_SERVER | VAR_HOST},
{"Digest", VAR_SERVER | VAR_HOST},
+ {"ECDSAPublicKey", VAR_HOST},
+ {"ECDSAPublicKeyFile", VAR_SERVER | VAR_HOST},
{"IndirectData", VAR_SERVER | VAR_HOST},
{"MACLength", VAR_SERVER | VAR_HOST},
{"PMTU", VAR_SERVER | VAR_HOST},
{"PMTUDiscovery", VAR_SERVER | VAR_HOST},
{"Port", VAR_HOST},
- {"PublicKey", VAR_SERVER | VAR_HOST | VAR_OBSOLETE},
+ {"PublicKey", VAR_HOST | VAR_OBSOLETE},
{"PublicKeyFile", VAR_SERVER | VAR_HOST | VAR_OBSOLETE},
- {"Subnet", VAR_HOST | VAR_MULTIPLE},
+ {"Subnet", VAR_HOST | VAR_MULTIPLE | VAR_SAFE},
{"TCPOnly", VAR_SERVER | VAR_HOST},
+ {"Weight", VAR_HOST | VAR_SAFE},
{NULL, 0}
};
return 1;
}
- int action = 0;
- if(!strcasecmp(argv[1], "add")) {
+ if(strcasecmp(argv[0], "config"))
+ argv--, argc++;
+
+ int action = -2;
+ if(!strcasecmp(argv[1], "get")) {
+ argv++, argc--;
+ } else if(!strcasecmp(argv[1], "add")) {
argv++, argc--, action = 1;
} else if(!strcasecmp(argv[1], "del")) {
argv++, argc--, action = -1;
char *value;
int len;
- len = strcspn(line, "\t =");
- value = line + len;
- value += strspn(value, "\t ");
- if(*value == '=') {
- value++;
- value += strspn(value, "\t ");
- }
- line[len] = '\0';
+ len = strcspn(line, "\t =");
+ value = line + len;
+ value += strspn(value, "\t ");
+ if(*value == '=') {
+ value++;
+ value += strspn(value, "\t ");
+ }
+ line[len] = '\0';
variable = strchr(line, '.');
if(variable) {
node = line;
return 1;
}
+ if(action < -1 && *value)
+ action = 0;
+
/* Some simple checks. */
bool found = false;
+ bool warnonremove = false;
for(int i = 0; variables[i].name; i++) {
if(strcasecmp(variables[i].name, variable))
/* Should this go into our own host config file? */
if(!node && !(variables[i].type & VAR_SERVER)) {
- node = get_my_name();
+ node = get_my_name(true);
if(!node)
return 1;
}
+ /* Change "add" into "set" for variables that do not allow multiple occurences.
+ Turn on warnings when it seems variables might be removed unintentionally. */
+
+ if(action == 1 && !(variables[i].type & VAR_MULTIPLE)) {
+ warnonremove = true;
+ action = 0;
+ } else if(action == 0 && (variables[i].type & VAR_MULTIPLE)) {
+ warnonremove = true;
+ }
+
break;
}
return 1;
}
- if(!found && action >= 0) {
- if(force) {
+ if(!found) {
+ if(force || action < 0) {
fprintf(stderr, "Warning: %s is not a known configuration variable!\n", variable);
} else {
fprintf(stderr, "%s: is not a known configuration variable! Use --force to use it anyway.\n", variable);
// Open the right configuration file.
char *filename;
if(node)
- xasprintf(&filename, "%s/%s", hosts_dir, node);
+ xasprintf(&filename, "%s" SLASH "%s", hosts_dir, node);
else
filename = tinc_conf;
FILE *f = fopen(filename, "r");
if(!f) {
- if(action < 0 || errno != ENOENT) {
- fprintf(stderr, "Could not open configuration file %s: %s\n", filename, strerror(errno));
- return 1;
- }
+ fprintf(stderr, "Could not open configuration file %s: %s\n", filename, strerror(errno));
+ return 1;
+ }
- // If it doesn't exist, create it.
- f = fopen(filename, "a+");
- if(!f) {
- fprintf(stderr, "Could not create configuration file %s: %s\n", filename, strerror(errno));
+ char *tmpfile = NULL;
+ FILE *tf = NULL;
+
+ if(action >= -1) {
+ xasprintf(&tmpfile, "%s.config.tmp", filename);
+ tf = fopen(tmpfile, "w");
+ if(!tf) {
+ fprintf(stderr, "Could not open temporary file %s: %s\n", tmpfile, strerror(errno));
+ fclose(f);
return 1;
- } else {
- fprintf(stderr, "Created configuration file %s.\n", filename);
}
}
- char *tmpfile;
- xasprintf(&tmpfile, "%s.config.tmp", filename);
- FILE *tf = fopen(tmpfile, "w");
- if(!tf) {
- fprintf(stderr, "Could not open temporary file %s: %s\n", tmpfile, strerror(errno));
- return 1;
- }
-
- // Copy the file, making modifications on the fly.
+ // Copy the file, making modifications on the fly, unless we are just getting a value.
char buf1[4096];
char buf2[4096];
bool set = false;
bool removed = false;
+ found = false;
while(fgets(buf1, sizeof buf1, f)) {
buf1[sizeof buf1 - 1] = 0;
- strcpy(buf2, buf1);
+ strncpy(buf2, buf1, sizeof buf2);
// Parse line in a simple way
char *bvalue;
// Did it match?
if(!strcasecmp(buf2, variable)) {
+ // Get
+ if(action < -1) {
+ found = true;
+ printf("%s\n", bvalue);
// Del
- if(action < 0) {
+ } else if(action == -1) {
if(!*value || !strcasecmp(bvalue, value)) {
removed = true;
continue;
}
// Set
} else if(action == 0) {
+ // Warn if "set" was used for variables that can occur multiple times
+ if(warnonremove && strcasecmp(bvalue, value))
+ fprintf(stderr, "Warning: removing %s = %s\n", variable, bvalue);
+
// Already set? Delete the rest...
if(set)
continue;
+
// Otherwise, replace.
if(fprintf(tf, "%s = %s\n", variable, value) < 0) {
fprintf(stderr, "Error writing to temporary file %s: %s\n", tmpfile, strerror(errno));
}
}
- // Copy original line...
- if(fputs(buf1, tf) < 0) {
- fprintf(stderr, "Error writing to temporary file %s: %s\n", tmpfile, strerror(errno));
- return 1;
+ if(action >= -1) {
+ // Copy original line...
+ if(fputs(buf1, tf) < 0) {
+ fprintf(stderr, "Error writing to temporary file %s: %s\n", tmpfile, strerror(errno));
+ return 1;
+ }
+
+ // Add newline if it is missing...
+ if(*buf1 && buf1[strlen(buf1) - 1] != '\n') {
+ if(fputc('\n', tf) < 0) {
+ fprintf(stderr, "Error writing to temporary file %s: %s\n", tmpfile, strerror(errno));
+ return 1;
+ }
+ }
}
}
}
}
+ if(action < -1) {
+ if(!found)
+ fprintf(stderr, "No matching configuration variables found.\n");
+ return 0;
+ }
+
// Make sure we wrote everything...
if(fclose(tf)) {
fprintf(stderr, "Error closing temporary file %s: %s\n", tmpfile, strerror(errno));
if(action < 0 && !removed) {
remove(tmpfile);
fprintf(stderr, "No configuration variables deleted.\n");
- return *value;
+ return *value != 0;
}
// Replace the configuration file with the new one
}
// Silently try notifying a running tincd of changes.
- fclose(stderr);
-
- if(connect_tincd())
+ if(connect_tincd(false))
sendline(fd, "%d %d", CONTROL, REQ_RELOAD);
return 0;
}
bool check_id(const char *name) {
+ if(!name || !*name)
+ return false;
+
for(int i = 0; i < strlen(name); i++) {
if(!isalnum(name[i]) && name[i] != '_')
return false;
return true;
}
+static bool try_bind(int port) {
+ struct addrinfo *ai = NULL;
+ struct addrinfo hint = {
+ .ai_flags = AI_PASSIVE,
+ .ai_family = AF_UNSPEC,
+ .ai_socktype = SOCK_STREAM,
+ .ai_protocol = IPPROTO_TCP,
+ };
+
+ char portstr[16];
+ snprintf(portstr, sizeof portstr, "%d", port);
+
+ if(getaddrinfo(NULL, portstr, &hint, &ai) || !ai)
+ return false;
+
+ while(ai) {
+ int fd = socket(ai->ai_family, SOCK_STREAM, IPPROTO_TCP);
+ if(!fd)
+ return false;
+ int result = bind(fd, ai->ai_addr, ai->ai_addrlen);
+ closesocket(fd);
+ if(result)
+ return false;
+ ai = ai->ai_next;
+ }
+
+ return true;
+}
+
+int check_port(char *name) {
+ if(try_bind(655))
+ return 655;
+
+ fprintf(stderr, "Warning: could not bind to port 655. ");
+
+ for(int i = 0; i < 100; i++) {
+ int port = 0x1000 + (rand() & 0x7fff);
+ if(try_bind(port)) {
+ char *filename;
+ xasprintf(&filename, "%s" SLASH "hosts" SLASH "%s", confbase, name);
+ FILE *f = fopen(filename, "a");
+ free(filename);
+ if(!f) {
+ fprintf(stderr, "Please change tinc's Port manually.\n");
+ return 0;
+ }
+
+ fprintf(f, "Port = %d\n", port);
+ fclose(f);
+ fprintf(stderr, "Tinc will instead listen on port %d.\n", port);
+ return port;
+ }
+ }
+
+ fprintf(stderr, "Please change tinc's Port manually.\n");
+ return 0;
+}
+
static int cmd_init(int argc, char *argv[]) {
if(!access(tinc_conf, F_OK)) {
fprintf(stderr, "Configuration file %s already exists!\n", tinc_conf);
return 1;
}
- if(argc < 2) {
- if(isatty(0) && isatty(1)) {
+ if(argc > 2) {
+ fprintf(stderr, "Too many arguments!\n");
+ return 1;
+ } else if(argc < 2) {
+ if(tty) {
char buf[1024];
fprintf(stdout, "Enter the Name you want your tinc node to have: ");
fflush(stdout);
return 1;
}
- if(mkdir(CONFDIR, 0755) && errno != EEXIST) {
- fprintf(stderr, "Could not create directory %s: %s\n", CONFDIR, strerror(errno));
+ if(!confbase_given && mkdir(confdir, 0755) && errno != EEXIST) {
+ fprintf(stderr, "Could not create directory %s: %s\n", confdir, strerror(errno));
return 1;
}
- if(mkdir(confbase, 0755) && errno != EEXIST) {
+ if(mkdir(confbase, 0777) && errno != EEXIST) {
fprintf(stderr, "Could not create directory %s: %s\n", confbase, strerror(errno));
return 1;
}
- char *hosts_dir = NULL;
- xasprintf(&hosts_dir, "%s/hosts", confbase);
- if(mkdir(hosts_dir, 0755) && errno != EEXIST) {
+ if(mkdir(hosts_dir, 0777) && errno != EEXIST) {
fprintf(stderr, "Could not create directory %s: %s\n", hosts_dir, strerror(errno));
return 1;
}
fprintf(f, "Name = %s\n", name);
fclose(f);
- fclose(stdin);
- if(!rsa_keygen(2048) || !ecdsa_keygen())
- return false;
+ if(!rsa_keygen(2048, false) || !ecdsa_keygen(false))
+ return 1;
- return true;
+ check_port(name);
+
+#ifndef HAVE_MINGW
+ char *filename;
+ xasprintf(&filename, "%s" SLASH "tinc-up", confbase);
+ if(access(filename, F_OK)) {
+ FILE *f = fopenmask(filename, "w", 0777);
+ if(!f) {
+ fprintf(stderr, "Could not create file %s: %s\n", filename, strerror(errno));
+ return 1;
+ }
+ fprintf(f, "#!/bin/sh\n\necho 'Unconfigured tinc-up script, please edit '$0'!'\n\n#ifconfig $INTERFACE <your vpn IP address> netmask <netmask of whole VPN>\n");
+ fclose(f);
+ }
+#endif
+
+ return 0;
}
static int cmd_generate_keys(int argc, char *argv[]) {
- return !(rsa_keygen(argc > 1 ? atoi(argv[1]) : 2048) && ecdsa_keygen());
+ if(argc > 2) {
+ fprintf(stderr, "Too many arguments!\n");
+ return 1;
+ }
+
+ if(!name)
+ name = get_my_name(false);
+
+ return !(rsa_keygen(argc > 1 ? atoi(argv[1]) : 2048, true) && ecdsa_keygen(true));
}
static int cmd_generate_rsa_keys(int argc, char *argv[]) {
- return !rsa_keygen(argc > 1 ? atoi(argv[1]) : 2048);
+ if(argc > 2) {
+ fprintf(stderr, "Too many arguments!\n");
+ return 1;
+ }
+
+ if(!name)
+ name = get_my_name(false);
+
+ return !rsa_keygen(argc > 1 ? atoi(argv[1]) : 2048, true);
}
static int cmd_generate_ecdsa_keys(int argc, char *argv[]) {
- return !ecdsa_keygen();
+ if(argc > 1) {
+ fprintf(stderr, "Too many arguments!\n");
+ return 1;
+ }
+
+ if(!name)
+ name = get_my_name(false);
+
+ return !ecdsa_keygen(true);
}
static int cmd_help(int argc, char *argv[]) {
}
static int cmd_version(int argc, char *argv[]) {
+ if(argc > 1) {
+ fprintf(stderr, "Too many arguments!\n");
+ return 1;
+ }
+
version();
return 0;
}
return 1;
}
- if(!connect_tincd())
+ if(!connect_tincd(true))
return 1;
return info(fd, argv[1]);
char *filename = NULL;
- if(strncmp(argv[1], "hosts/", 6)) {
+ if(strncmp(argv[1], "hosts" SLASH, 6)) {
for(int i = 0; conffiles[i]; i++) {
if(!strcmp(argv[1], conffiles[i])) {
- xasprintf(&filename, "%s/%s", confbase, argv[1]);
+ xasprintf(&filename, "%s" SLASH "%s", confbase, argv[1]);
break;
}
}
}
if(!filename) {
- xasprintf(&filename, "%s/%s", hosts_dir, argv[1]);
+ xasprintf(&filename, "%s" SLASH "%s", hosts_dir, argv[1]);
char *dash = strchr(argv[1], '-');
if(dash) {
*dash++ = 0;
}
}
+ char *command;
#ifndef HAVE_MINGW
- char *editor = getenv("VISUAL") ?: getenv("EDITOR") ?: "vi";
+ xasprintf(&command, "\"%s\" \"%s\"", getenv("VISUAL") ?: getenv("EDITOR") ?: "vi", filename);
#else
- char *editor = "edit";
+ xasprintf(&command, "edit \"%s\"", filename);
#endif
-
- char *command;
- xasprintf(&command, "\"%s\" \"%s\"", editor, filename);
int result = system(command);
if(result)
return result;
// Silently try notifying a running tincd of changes.
- fclose(stderr);
-
- if(connect_tincd())
+ if(connect_tincd(false))
sendline(fd, "%d %d", CONTROL, REQ_RELOAD);
return 0;
static int export(const char *name, FILE *out) {
char *filename;
- xasprintf(&filename, "%s/%s", hosts_dir, name);
+ xasprintf(&filename, "%s" SLASH "%s", hosts_dir, name);
FILE *in = fopen(filename, "r");
if(!in) {
fprintf(stderr, "Could not open configuration file %s: %s\n", filename, strerror(errno));
if(ferror(in)) {
fprintf(stderr, "Error while reading configuration file %s: %s\n", filename, strerror(errno));
+ fclose(in);
return 1;
}
}
static int cmd_export(int argc, char *argv[]) {
- char *name = get_my_name();
+ if(argc > 1) {
+ fprintf(stderr, "Too many arguments!\n");
+ return 1;
+ }
+
+ char *name = get_my_name(true);
if(!name)
return 1;
- return export(name, stdout);
+ int result = export(name, stdout);
+ if(!tty)
+ fclose(stdout);
+
+ free(name);
+ return result;
}
static int cmd_export_all(int argc, char *argv[]) {
+ if(argc > 1) {
+ fprintf(stderr, "Too many arguments!\n");
+ return 1;
+ }
+
DIR *dir = opendir(hosts_dir);
if(!dir) {
fprintf(stderr, "Could not open host configuration directory %s: %s\n", hosts_dir, strerror(errno));
}
closedir(dir);
+ if(!tty)
+ fclose(stdout);
return result;
}
static int cmd_import(int argc, char *argv[]) {
+ if(argc > 1) {
+ fprintf(stderr, "Too many arguments!\n");
+ return 1;
+ }
+
FILE *in = stdin;
FILE *out = NULL;
char buf[4096];
char name[4096];
- char *filename;
+ char *filename = NULL;
int count = 0;
bool firstline = true;
while(fgets(buf, sizeof buf, in)) {
if(sscanf(buf, "Name = %s", name) == 1) {
+ firstline = false;
+
if(!check_id(name)) {
fprintf(stderr, "Invalid Name in input!\n");
return 1;
fclose(out);
free(filename);
- xasprintf(&filename, "%s/%s", hosts_dir, name);
+ xasprintf(&filename, "%s" SLASH "%s", hosts_dir, name);
if(!force && !access(filename, F_OK)) {
fprintf(stderr, "Host configuration file %s already exists, skipping.\n", filename);
}
count++;
- firstline = false;
continue;
} else if(firstline) {
fprintf(stderr, "Junk at the beginning of the input, ignoring.\n");
}
}
+static int cmd_exchange(int argc, char *argv[]) {
+ return cmd_export(argc, argv) ?: cmd_import(argc, argv);
+}
+
+static int cmd_exchange_all(int argc, char *argv[]) {
+ return cmd_export_all(argc, argv) ?: cmd_import(argc, argv);
+}
+
static const struct {
const char *command;
int (*function)(int argc, char *argv[]);
+ bool hidden;
} commands[] = {
{"start", cmd_start},
{"stop", cmd_stop},
{"pcap", cmd_pcap},
{"log", cmd_log},
{"pid", cmd_pid},
- {"config", cmd_config},
+ {"config", cmd_config, true},
+ {"add", cmd_config},
+ {"del", cmd_config},
+ {"get", cmd_config},
+ {"set", cmd_config},
{"init", cmd_init},
{"generate-keys", cmd_generate_keys},
{"generate-rsa-keys", cmd_generate_rsa_keys},
{"export", cmd_export},
{"export-all", cmd_export_all},
{"import", cmd_import},
+ {"exchange", cmd_exchange},
+ {"exchange-all", cmd_exchange_all},
+ {"invite", cmd_invite},
+ {"join", cmd_join},
{NULL, NULL},
};
+#ifdef HAVE_READLINE
+static char *complete_command(const char *text, int state) {
+ static int i;
+
+ if(!state)
+ i = 0;
+ else
+ i++;
+
+ while(commands[i].command) {
+ if(!commands[i].hidden && !strncasecmp(commands[i].command, text, strlen(text)))
+ return xstrdup(commands[i].command);
+ i++;
+ }
+
+ return NULL;
+}
+
+static char *complete_dump(const char *text, int state) {
+ const char *matches[] = {"reachable", "nodes", "edges", "subnets", "connections", "graph", NULL};
+ static int i;
+
+ if(!state)
+ i = 0;
+ else
+ i++;
+
+ while(matches[i]) {
+ if(!strncasecmp(matches[i], text, strlen(text)))
+ return xstrdup(matches[i]);
+ i++;
+ }
+
+ return NULL;
+}
+
+static char *complete_config(const char *text, int state) {
+ static int i;
+
+ if(!state)
+ i = 0;
+ else
+ i++;
+
+ while(variables[i].name) {
+ char *dot = strchr(text, '.');
+ if(dot) {
+ if((variables[i].type & VAR_HOST) && !strncasecmp(variables[i].name, dot + 1, strlen(dot + 1))) {
+ char *match;
+ xasprintf(&match, "%.*s.%s", (int)(dot - text), text, variables[i].name);
+ return match;
+ }
+ } else {
+ if(!strncasecmp(variables[i].name, text, strlen(text)))
+ return xstrdup(variables[i].name);
+ }
+ i++;
+ }
+
+ return NULL;
+}
+
+static char *complete_info(const char *text, int state) {
+ static int i;
+ if(!state) {
+ i = 0;
+ if(!connect_tincd(false))
+ return NULL;
+ // Check the list of nodes
+ sendline(fd, "%d %d", CONTROL, REQ_DUMP_NODES);
+ sendline(fd, "%d %d", CONTROL, REQ_DUMP_SUBNETS);
+ }
+
+ while(recvline(fd, line, sizeof line)) {
+ char item[4096];
+ int n = sscanf(line, "%d %d %s", &code, &req, item);
+ if(n == 2) {
+ i++;
+ if(i >= 2)
+ break;
+ else
+ continue;
+ }
+
+ if(n != 3) {
+ fprintf(stderr, "Unable to parse dump from tincd, n = %d, i = %d.\n", n, i);
+ break;
+ }
+
+ if(!strncmp(item, text, strlen(text)))
+ return xstrdup(strip_weight(item));
+ }
+
+ return NULL;
+}
+
+static char *complete_nothing(const char *text, int state) {
+ return NULL;
+}
+
+static char **completion (const char *text, int start, int end) {
+ char **matches = NULL;
+
+ if(!start)
+ matches = rl_completion_matches(text, complete_command);
+ else if(!strncasecmp(rl_line_buffer, "dump ", 5))
+ matches = rl_completion_matches(text, complete_dump);
+ else if(!strncasecmp(rl_line_buffer, "add ", 4))
+ matches = rl_completion_matches(text, complete_config);
+ else if(!strncasecmp(rl_line_buffer, "del ", 4))
+ matches = rl_completion_matches(text, complete_config);
+ else if(!strncasecmp(rl_line_buffer, "get ", 4))
+ matches = rl_completion_matches(text, complete_config);
+ else if(!strncasecmp(rl_line_buffer, "set ", 4))
+ matches = rl_completion_matches(text, complete_config);
+ else if(!strncasecmp(rl_line_buffer, "info ", 5))
+ matches = rl_completion_matches(text, complete_info);
+
+ return matches;
+}
+#endif
+
+static int cmd_shell(int argc, char *argv[]) {
+ char *prompt;
+ xasprintf(&prompt, "%s> ", identname);
+ int result = 0;
+ char buf[4096];
+ char *line = NULL;
+ int maxargs = argc + 16;
+ char **nargv = xmalloc(maxargs * sizeof *nargv);
+
+ for(int i = 0; i < argc; i++)
+ nargv[i] = argv[i];
+
+#ifdef HAVE_READLINE
+ rl_readline_name = "tinc";
+ rl_completion_entry_function = complete_nothing;
+ rl_attempted_completion_function = completion;
+ rl_filename_completion_desired = 0;
+ char *copy = NULL;
+#endif
+
+ while(true) {
+#ifdef HAVE_READLINE
+ if(tty) {
+ free(copy);
+ free(line);
+ rl_basic_word_break_characters = "\t\n ";
+ line = readline(prompt);
+ if(line)
+ copy = xstrdup(line);
+ } else {
+ line = fgets(buf, sizeof buf, stdin);
+ }
+#else
+ if(tty)
+ fputs(prompt, stdout);
+
+ line = fgets(buf, sizeof buf, stdin);
+#endif
+
+ if(!line)
+ break;
+
+ /* Ignore comments */
+
+ if(*line == '#')
+ continue;
+
+ /* Split */
+
+ int nargc = argc;
+ char *p = line + strspn(line, " \t\n");
+ char *next = strtok(p, " \t\n");
+
+ while(p && *p) {
+ if(nargc >= maxargs) {
+ fprintf(stderr, "next %p '%s', p %p '%s'\n", next, next, p, p);
+ abort();
+ maxargs *= 2;
+ nargv = xrealloc(nargv, maxargs * sizeof *nargv);
+ }
+
+ nargv[nargc++] = p;
+ p = next;
+ next = strtok(NULL, " \t\n");
+ }
+
+ if(nargc == argc)
+ continue;
+
+ if(!strcasecmp(nargv[argc], "exit") || !strcasecmp(nargv[argc], "quit"))
+ return result;
+
+ bool found = false;
+
+ for(int i = 0; commands[i].command; i++) {
+ if(!strcasecmp(nargv[argc], commands[i].command)) {
+ result |= commands[i].function(nargc - argc - 1, nargv + argc + 1);
+ found = true;
+ break;
+ }
+ }
+
+#ifdef HAVE_READLINE
+ if(tty && found)
+ add_history(copy);
+#endif
+
+ if(!found) {
+ fprintf(stderr, "Unknown command `%s'.\n", nargv[argc]);
+ result |= 1;
+ }
+ }
+
+ free(nargv);
+
+ if(tty)
+ printf("\n");
+ return result;
+}
+
+
int main(int argc, char *argv[]) {
program_name = argv[0];
+ orig_argv = argv;
+ orig_argc = argc;
if(!parse_options(argc, argv))
return 1;
-
+
make_names();
+ xasprintf(&tinc_conf, "%s" SLASH "tinc.conf", confbase);
+ xasprintf(&hosts_dir, "%s" SLASH "hosts", confbase);
if(show_version) {
version();
return 0;
}
- if(optind >= argc) {
- fprintf(stderr, "No command given.\n");
- usage(true);
- return 1;
+#ifdef HAVE_MINGW
+ static struct WSAData wsa_state;
+
+ if(WSAStartup(MAKEWORD(2, 2), &wsa_state)) {
+ fprintf(stderr, "System call `%s' failed: %s", "WSAStartup", winerror(GetLastError()));
+ return false;
}
+#endif
+
+ srand(time(NULL));
+ crypto_init();
+
+ tty = isatty(0) && isatty(1);
+
+ if(optind >= argc)
+ return cmd_shell(argc, argv);
for(int i = 0; commands[i].command; i++) {
if(!strcasecmp(argv[optind], commands[i].command))
projects / tinc / blobdiff