/*
tincctl.c -- Controlling a running tincd
- Copyright (C) 2007 Guus Sliepen <guus@tinc-vpn.org>
+ Copyright (C) 2007-2012 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
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; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-
- $Id$
+ You should have received a copy of the GNU General Public License along
+ with this program; if not, write to the Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "system.h"
-#include <sys/un.h>
-#include <openssl/rand.h>
-#include <openssl/rsa.h>
-#include <openssl/pem.h>
-#include <openssl/evp.h>
-#include <openssl/engine.h>
-
#include <getopt.h>
#include "xalloc.h"
#include "protocol.h"
#include "control_common.h"
+#include "ecdsagen.h"
+#include "rsagen.h"
+#include "utils.h"
+#include "tincctl.h"
+#include "top.h"
/* The name this program was run with. */
-char *program_name = NULL;
+static char *program_name = NULL;
/* If nonzero, display usage information and exit. */
-bool show_help = false;
+static bool show_help = false;
/* If nonzero, print the version on standard output and exit. */
-bool show_version = false;
-
-/* If nonzero, it will attempt to kill a running tincd and exit. */
-int kill_tincd = 0;
-
-/* If nonzero, generate public/private keypair for this host/net. */
-int generate_keys = 0;
+static bool show_version = false;
+static char *name = NULL;
static char *identname = NULL; /* program name for syslog */
-static char *controlsocketname = NULL; /* pid file location */
+static char *pidfilename = NULL; /* pid file location */
+static char controlcookie[1024];
char *netname = NULL;
char *confbase = NULL;
+#ifdef HAVE_MINGW
+static struct WSAData wsa_state;
+#endif
+
static struct option const long_options[] = {
{"config", required_argument, NULL, 'c'},
{"net", required_argument, NULL, 'n'},
{"help", no_argument, NULL, 1},
{"version", no_argument, NULL, 2},
- {"controlsocket", required_argument, NULL, 5},
+ {"pidfile", required_argument, NULL, 5},
{NULL, 0, NULL, 0}
};
static void usage(bool status) {
if(status)
- fprintf(stderr, _("Try `%s --help\' for more information.\n"),
+ 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, --net=NETNAME Connect to net NETNAME.\n"
- " --controlsocket=FILENAME Open control socket at FILENAME.\n"
- " --help Display this help and exit.\n"
- " --version Output version information and exit.\n"
+ printf("Usage: %s [options] command\n\n", program_name);
+ printf("Valid options are:\n"
+ " -c, --config=DIR Read configuration options from DIR.\n"
+ " -n, --net=NETNAME Connect to net NETNAME.\n"
+ " --pidfile=FILENAME Read control cookie from FILENAME.\n"
+ " --help Display this help and exit.\n"
+ " --version Output version information and exit.\n"
"\n"
"Valid commands are:\n"
+ " init [name] Create initial configuration files.\n"
" start Start tincd.\n"
" stop Stop tincd.\n"
" restart Restart tincd.\n"
- " reload Reload configuration of running tincd.\n"
+ " reload Partially reload configuration of running tincd.\n"
" pid Show PID of currently running tincd.\n"
- " generate-keys [bits] Generate a new public/private keypair.\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"
" edges - all known connections in the VPN\n"
" purge Purge unreachable nodes\n"
" debug N Set debug level\n"
" retry Retry all outgoing connections\n"
- "\n"));
- printf(_("Report bugs to tinc@tinc-vpn.org.\n"));
+ " disconnect NODE Close meta connection with NODE\n"
+#ifdef HAVE_CURSES
+ " top Show real-time statistics\n"
+#endif
+ " pcap [snaplen] Dump traffic in pcap format [up to snaplen bytes per packet]\n"
+ " log [level] Dump log output [up to the specified level]\n"
+ "\n");
+ printf("Report bugs to tinc@tinc-vpn.org.\n");
}
}
break;
case 5: /* open control socket here */
- controlsocketname = xstrdup(optarg);
+ pidfilename = xstrdup(optarg);
break;
case '?':
}
}
+ if(!netname) {
+ netname = getenv("NETNAME");
+ if(netname)
+ netname = xstrdup(netname);
+ }
+
return true;
}
-FILE *ask_and_open(const char *filename, const char *what, const char *mode) {
+static FILE *ask_and_open(const char *filename, const char *what, const char *mode) {
FILE *r;
char *directory;
char buf[PATH_MAX];
char buf2[PATH_MAX];
- size_t len;
/* Check stdin and stdout */
if(isatty(0) && isatty(1)) {
/* Ask for a file and/or directory name. */
- fprintf(stdout, _("Please enter a file to save %s to [%s]: "),
+ fprintf(stdout, "Please enter a file to save %s to [%s]: ",
what, filename);
fflush(stdout);
- if(fgets(buf, sizeof buf, stdin) < 0) {
- fprintf(stderr, _("Error while reading stdin: %s\n"),
+ if(fgets(buf, sizeof buf, stdin) == NULL) {
+ fprintf(stderr, "Error while reading stdin: %s\n",
strerror(errno));
return NULL;
}
- len = strlen(buf);
+ size_t len = strlen(buf);
if(len)
buf[--len] = 0;
r = fopen(filename, mode);
if(!r) {
- fprintf(stderr, _("Error opening file `%s': %s\n"), filename, strerror(errno));
+ fprintf(stderr, "Error opening file `%s': %s\n", filename, strerror(errno));
return NULL;
}
return r;
}
-/* This function prettyprints the key generation process */
+/*
+ Generate a public/private ECDSA keypair, and ask for a file to store
+ them in.
+*/
+static bool ecdsa_keygen() {
+ ecdsa_t key;
+ FILE *f;
+ char *filename;
-static void indicator(int a, int b, void *p) {
- switch (a) {
- case 0:
- fprintf(stderr, ".");
- break;
+ fprintf(stderr, "Generating ECDSA keypair:\n");
- case 1:
- fprintf(stderr, "+");
- break;
+ if(!ecdsa_generate(&key)) {
+ fprintf(stderr, "Error during key generation!\n");
+ return false;
+ } else
+ fprintf(stderr, "Done.\n");
- case 2:
- fprintf(stderr, "-");
- break;
+ xasprintf(&filename, "%s/ecdsa_key.priv", confbase);
+ f = ask_and_open(filename, "private ECDSA key", "a");
- case 3:
- switch (b) {
- case 0:
- fprintf(stderr, " p\n");
- break;
+ 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");
- case 1:
- fprintf(stderr, " q\n");
- break;
+ ecdsa_write_pem_private_key(&key, f);
- default:
- fprintf(stderr, "?");
- }
- break;
+ fclose(f);
+ free(filename);
- default:
- fprintf(stderr, "?");
- }
+ if(name)
+ xasprintf(&filename, "%s/hosts/%s", confbase, name);
+ else
+ xasprintf(&filename, "%s/ecdsa_key.pub", confbase);
+
+ f = ask_and_open(filename, "public ECDSA key", "a");
+
+ 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);
+ fprintf(f, "ECDSAPublicKey = %s\n", pubkey);
+ free(pubkey);
+
+ fclose(f);
+ free(filename);
+
+ return true;
}
/*
Generate a public/private RSA keypair, and ask for a file to store
them in.
*/
-static bool keygen(int bits) {
- RSA *rsa_key;
+static bool rsa_keygen(int bits) {
+ rsa_t key;
FILE *f;
- char *name = NULL;
char *filename;
- fprintf(stderr, _("Generating %d bits keys:\n"), bits);
- rsa_key = RSA_generate_key(bits, 0x10001, indicator, NULL);
+ fprintf(stderr, "Generating %d bits keys:\n", bits);
- if(!rsa_key) {
- fprintf(stderr, _("Error during key generation!\n"));
+ if(!rsa_generate(&key, bits, 0x10001)) {
+ fprintf(stderr, "Error during key generation!\n");
return false;
} else
- fprintf(stderr, _("Done.\n"));
+ fprintf(stderr, "Done.\n");
- asprintf(&filename, "%s/rsa_key.priv", confbase);
- f = ask_and_open(filename, _("private RSA key"), "a");
+ xasprintf(&filename, "%s/rsa_key.priv", confbase);
+ f = ask_and_open(filename, "private RSA key", "a");
if(!f)
return false;
#endif
if(ftell(f))
- fprintf(stderr, _("Appending key to existing contents.\nMake sure only one key is stored in the file.\n"));
+ 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);
- PEM_write_RSAPrivateKey(f, rsa_key, NULL, NULL, 0, NULL, NULL);
fclose(f);
free(filename);
if(name)
- asprintf(&filename, "%s/hosts/%s", confbase, name);
+ xasprintf(&filename, "%s/hosts/%s", confbase, name);
else
- asprintf(&filename, "%s/rsa_key.pub", confbase);
+ xasprintf(&filename, "%s/rsa_key.pub", confbase);
- f = ask_and_open(filename, _("public RSA key"), "a");
+ f = ask_and_open(filename, "public RSA key", "a");
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"));
+ 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);
- PEM_write_RSAPublicKey(f, rsa_key);
fclose(f);
free(filename);
#ifdef HAVE_MINGW
HKEY key;
char installdir[1024] = "";
- long len = sizeof(installdir);
+ long len = sizeof installdir;
#endif
if(netname)
- asprintf(&identname, "tinc.%s", 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(!logfilename)
- asprintf(&logfilename, "%s/log/%s.log", identname);
if(!confbase) {
if(netname)
- asprintf(&confbase, "%s/%s", installdir, netname);
+ xasprintf(&confbase, "%s/%s", installdir, netname);
else
- asprintf(&confbase, "%s", installdir);
+ xasprintf(&confbase, "%s", installdir);
}
}
+ if(!pidfilename)
+ xasprintf(&pidfilename, "%s/pid", confbase);
RegCloseKey(key);
if(*installdir)
return;
}
#endif
- if(!controlsocketname)
- asprintf(&controlsocketname, LOCALSTATEDIR "/run/%s.control", identname);
+ if(!pidfilename)
+ xasprintf(&pidfilename, "%s/run/%s.pid", LOCALSTATEDIR, identname);
if(netname) {
if(!confbase)
- asprintf(&confbase, CONFDIR "/tinc/%s", netname);
+ xasprintf(&confbase, CONFDIR "/tinc/%s", netname);
else
- fprintf(stderr, _("Both netname and configuration directory given, using the latter...\n"));
+ fprintf(stderr, "Both netname and configuration directory given, using the latter...\n");
} else {
if(!confbase)
- asprintf(&confbase, CONFDIR "/tinc");
+ xasprintf(&confbase, CONFDIR "/tinc");
}
}
-static int fullread(int fd, void *data, size_t datalen) {
- int rv, len = 0;
+static char buffer[4096];
+static size_t blen = 0;
+
+bool recvline(int fd, char *line, size_t len) {
+ char *newline = NULL;
- while (len < datalen) {
- rv = read(fd, data + len, datalen - len);
- if(rv == -1 && errno == EINTR)
+ while(!(newline = memchr(buffer, '\n', blen))) {
+ int result = recv(fd, buffer + blen, sizeof buffer - blen, 0);
+ if(result == -1 && errno == EINTR)
continue;
- else if (rv == -1)
- return rv;
- else if (rv == 0) {
- errno = ENODATA;
- return -1;
- }
- len += rv;
+ else if(result <= 0)
+ return false;
+ blen += result;
}
- return 0;
+
+ if(newline - buffer >= len)
+ return false;
+
+ len = newline - buffer;
+
+ memcpy(line, buffer, len);
+ line[len] = 0;
+ memmove(buffer, newline + 1, blen - len - 1);
+ blen -= len + 1;
+
+ return true;
}
-/*
- Send a request (raw)
-*/
-static int send_ctl_request(int fd, enum request_type type,
- void const *outdata, size_t outdatalen,
- int *res_errno_p, void **indata_p,
- size_t *indatalen_p) {
- tinc_ctl_request_t req;
- int rv;
- struct iovec vector[2] = {
- {&req, sizeof(req)},
- {(void*) outdata, outdatalen}
- };
- void *indata;
+static bool recvdata(int fd, char *data, size_t len) {
+ while(blen < len) {
+ int result = recv(fd, buffer + blen, sizeof buffer - blen, 0);
+ if(result == -1 && errno == EINTR)
+ continue;
+ else if(result <= 0)
+ return false;
+ blen += result;
+ }
- if(res_errno_p == NULL)
- return -1;
+ memcpy(data, buffer, len);
+ memmove(buffer, buffer + len, blen - len);
+ blen -= len;
- memset(&req, 0, sizeof req);
- req.length = sizeof req + outdatalen;
- req.type = type;
- req.res_errno = 0;
+ return true;
+}
- while((rv = writev(fd, vector, 2)) == -1 && errno == EINTR) ;
- if(rv != req.length)
- return -1;
+bool sendline(int fd, char *format, ...) {
+ static char buffer[4096];
+ char *p = buffer;
+ int blen = 0;
+ va_list ap;
+
+ va_start(ap, format);
+ blen = vsnprintf(buffer, sizeof buffer, format, ap);
+ va_end(ap);
+
+ if(blen < 1 || blen >= sizeof buffer)
+ return false;
- if(fullread(fd, &req, sizeof req) == -1)
- return -1;
+ buffer[blen] = '\n';
+ blen++;
- if(req.length < sizeof req) {
- errno = EINVAL;
- return -1;
+ while(blen) {
+ int result = send(fd, p, blen, 0);
+ if(result == -1 && errno == EINTR)
+ continue;
+ else if(result <= 0)
+ return false;
+ p += result;
+ blen -= result;
}
- if(req.length > sizeof req) {
- if (indata_p == NULL) {
- errno = EINVAL;
- return -1;
- }
+ return true;
+}
- indata = xmalloc(req.length - sizeof req);
+static void pcap(int fd, FILE *out, int snaplen) {
+ sendline(fd, "%d %d %d", CONTROL, REQ_PCAP, snaplen);
+ char data[9018];
+
+ struct {
+ uint32_t magic;
+ uint16_t major;
+ uint16_t minor;
+ uint32_t tz_offset;
+ uint32_t tz_accuracy;
+ uint32_t snaplen;
+ uint32_t ll_type;
+ } header = {
+ 0xa1b2c3d4,
+ 2, 4,
+ 0, 0,
+ snaplen ?: sizeof data,
+ 1,
+ };
- if(fullread(fd, indata, req.length - sizeof req) == -1) {
- free(indata);
- return -1;
- }
+ struct {
+ uint32_t tv_sec;
+ uint32_t tv_usec;
+ uint32_t len;
+ uint32_t origlen;
+ } packet;
- *indata_p = indata;
- if(indatalen_p != NULL)
- *indatalen_p = req.length - sizeof req;
- }
+ struct timeval tv;
- *res_errno_p = req.res_errno;
+ fwrite(&header, sizeof header, 1, out);
+ fflush(out);
- return 0;
+ char line[32];
+ while(recvline(fd, line, sizeof line)) {
+ int code, req, len;
+ int n = sscanf(line, "%d %d %d", &code, &req, &len);
+ gettimeofday(&tv, NULL);
+ if(n != 3 || code != CONTROL || req != REQ_PCAP || len < 0 || len > sizeof data)
+ break;
+ if(!recvdata(fd, data, len))
+ break;
+ packet.tv_sec = tv.tv_sec;
+ packet.tv_usec = tv.tv_usec;
+ packet.len = len;
+ packet.origlen = len;
+ fwrite(&packet, sizeof packet, 1, out);
+ fwrite(data, len, 1, out);
+ fflush(out);
+ }
}
-/*
- Send a request (with printfs)
-*/
-static int send_ctl_request_cooked(int fd, enum request_type type,
- void const *outdata, size_t outdatalen)
-{
- int res_errno = -1;
- char *buf = NULL;
- size_t buflen = 0;
+static void logcontrol(int fd, FILE *out, int level) {
+ sendline(fd, "%d %d %d", CONTROL, REQ_LOG, level);
+ char data[1024];
+ char line[32];
- if(send_ctl_request(fd, type, outdata, outdatalen, &res_errno,
- (void**) &buf, &buflen)) {
- fprintf(stderr, _("Error sending request: %s\n"), strerror(errno));
- return -1;
+ while(recvline(fd, line, sizeof line)) {
+ int code, req, len;
+ int n = sscanf(line, "%d %d %d", &code, &req, &len);
+ if(n != 3 || code != CONTROL || req != REQ_LOG || len < 0 || len > sizeof data)
+ break;
+ if(!recvdata(fd, data, len))
+ break;
+ fwrite(data, len, 1, out);
+ fputc('\n', out);
+ fflush(out);
}
+}
- if(buf != NULL) {
- printf("%*s", buflen, buf);
- free(buf);
+#ifdef HAVE_MINGW
+static bool remove_service(void) {
+ SC_HANDLE manager = NULL;
+ SC_HANDLE service = NULL;
+ SERVICE_STATUS status = {0};
+
+ manager = OpenSCManager(NULL, NULL, SC_MANAGER_ALL_ACCESS);
+ if(!manager) {
+ fprintf(stderr, "Could not open service manager: %s\n", winerror(GetLastError()));
+ return false;
}
- if(res_errno != 0) {
- fprintf(stderr, _("Server reported error: %s\n"), strerror(res_errno));
- return -1;
+ service = OpenService(manager, identname, SERVICE_ALL_ACCESS);
+
+ if(!service) {
+ fprintf(stderr, "Could not open %s service: %s\n", identname, winerror(GetLastError()));
+ return false;
}
- return 0;
+ if(!ControlService(service, SERVICE_CONTROL_STOP, &status))
+ fprintf(stderr, "Could not stop %s service: %s\n", identname, winerror(GetLastError()));
+ else
+ fprintf(stderr, "%s service stopped\n", identname);
+
+ if(!DeleteService(service)) {
+ fprintf(stderr, "Could not remove %s service: %s\n", identname, winerror(GetLastError()));
+ return false;
+ }
+
+ fprintf(stderr, "%s service removed\n", identname);
+
+ return true;
}
+#endif
-int main(int argc, char *argv[], char *envp[]) {
- struct sockaddr_un addr;
+int main(int argc, char *argv[]) {
int fd;
- int len;
- tinc_ctl_greeting_t greeting;
- tinc_ctl_request_t req;
+ int result;
+ char host[128];
+ char port[128];
+ int pid;
program_name = argv[0];
- setlocale(LC_ALL, "");
- bindtextdomain(PACKAGE, LOCALEDIR);
- textdomain(PACKAGE);
-
if(!parse_options(argc, argv))
return 1;
make_names();
if(show_version) {
- printf(_("%s version %s (built %s %s, protocol %d)\n"), PACKAGE,
- VERSION, __DATE__, __TIME__, PROT_CURRENT);
- printf(_("Copyright (C) 1998-2007 Ivo Timmermans, Guus Sliepen and others.\n"
+ printf("%s version %s (built %s %s, protocol %d.%d)\n", PACKAGE,
+ VERSION, __DATE__, __TIME__, PROT_MAJOR, PROT_MINOR);
+ printf("Copyright (C) 1998-2012 Ivo Timmermans, Guus Sliepen and others.\n"
"See the AUTHORS file for a complete list.\n\n"
"tinc comes with ABSOLUTELY NO WARRANTY. This is free software,\n"
"and you are welcome to redistribute it under certain conditions;\n"
- "see the file COPYING for details.\n"));
+ "see the file COPYING for details.\n");
return 0;
}
}
if(optind >= argc) {
- fprintf(stderr, _("Not enough arguments.\n"));
+ fprintf(stderr, "Not enough arguments.\n");
usage(true);
return 1;
}
// First handle commands that don't involve connecting to a running tinc daemon.
+ if(!strcasecmp(argv[optind], "generate-rsa-keys")) {
+ return !rsa_keygen(optind < argc - 1 ? atoi(argv[optind + 1]) : 2048);
+ }
+
+ if(!strcasecmp(argv[optind], "generate-ecdsa-keys")) {
+ return !ecdsa_keygen();
+ }
+
if(!strcasecmp(argv[optind], "generate-keys")) {
- return !keygen(optind > argc ? atoi(argv[optind + 1]) : 1024);
+ return !(rsa_keygen(optind < argc - 1 ? atoi(argv[optind + 1]) : 2048) && ecdsa_keygen());
}
if(!strcasecmp(argv[optind], "start")) {
- argv[optind] = NULL;
- execve("tincd", argv, envp);
- fprintf(stderr, _("Could not start tincd: %s"), strerror(errno));
+ int i, j;
+ char *c;
+ char *slash = strrchr(argv[0], '/');
+#ifdef HAVE_MINGW
+ if ((c = strrchr(argv[0], '\\')) > slash)
+ slash = c;
+#endif
+ if (slash++) {
+ c = xmalloc((slash - argv[0]) + sizeof("tincd"));
+ sprintf(c, "%.*stincd", (int)(slash - argv[0]), argv[0]);
+ }
+ else
+ c = "tincd";
+ argv[0] = c;
+ for(i = j = 1; argv[i]; ++i)
+ if (i != optind && strcmp(argv[i], "--") != 0)
+ argv[j++] = argv[i];
+ argv[j] = NULL;
+ execvp(c, argv);
+ fprintf(stderr, "Could not start %s: %s\n", c, strerror(errno));
return 1;
}
- // Now handle commands that do involve connecting to a running tinc daemon.
+ if(!strcasecmp(argv[optind], "init")) {
+ char *filename = NULL;
+ xasprintf(&filename, "%s/tinc.conf", confbase);
+ if(!access(confbase, F_OK)) {
+ fprintf(stderr, "Configuration file %s already exists!\n", filename);
+ return 1;
+ }
- if(strlen(controlsocketname) >= sizeof addr.sun_path) {
- fprintf(stderr, _("Control socket filename too long!\n"));
+ if(optind >= argc - 1) {
+ if(isatty(0) && isatty(1)) {
+ char buf[1024];
+ fprintf(stdout, "Enter the Name you want your tinc node to have: ");
+ fflush(stdout);
+ if(!fgets(buf, sizeof buf, stdin)) {
+ fprintf(stderr, "Error while reading stdin: %s\n", strerror(errno));
+ return 1;
+ }
+ int len = strlen(buf);
+ if(len)
+ buf[--len] = 0;
+ if(!len) {
+ fprintf(stderr, "No name given!\n");
+ return 1;
+ }
+ name = strdup(buf);
+ } else {
+ fprintf(stderr, "No Name given!\n");
+ return 1;
+ }
+ } else {
+ name = strdup(argv[optind + 1]);
+ if(!*name) {
+ fprintf(stderr, "No Name given!\n");
+ return 1;
+ }
+ }
+
+ for(int i = 0; i < strlen(name); i++) {
+ if(!isalnum(name[i]) && name[i] != '_') {
+ fprintf(stderr, "Invalid Name! Only a-z, A-Z, 0-9 and _ are allowed characters.\n");
+ return 1;
+ }
+ }
+
+ if(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) {
+ fprintf(stderr, "Could not create directory %s: %s\n", confbase, strerror(errno));
+ return 1;
+ }
+
+ char *filename2 = NULL;
+ xasprintf(&filename2, "%s/hosts", confbase);
+ if(mkdir(filename2, 0755) && errno != EEXIST) {
+ fprintf(stderr, "Could not create directory %s: %s\n", filename, strerror(errno));
+ return 1;
+ }
+
+ FILE *f = fopen(filename, "w");
+ if(!f) {
+ fprintf(stderr, "Could not create file %s: %s\n", filename, strerror(errno));
+ return 1;
+ }
+
+ fprintf(f, "Name = %s\n", name);
+ fclose(f);
+
+ fclose(stdin);
+ if(!rsa_keygen(2048) || !ecdsa_keygen())
+ return false;
+
+ return true;
+ }
+
+ /*
+ * Now handle commands that do involve connecting to a running tinc daemon.
+ * Authenticate the server by ensuring the parent directory can be
+ * traversed only by root. Note this is not totally race-free unless all
+ * ancestors are writable only by trusted users, which we don't verify.
+ */
+
+ FILE *f = fopen(pidfilename, "r");
+ if(!f) {
+ fprintf(stderr, "Could not open pid file %s: %s\n", pidfilename, strerror(errno));
+ return 1;
+ }
+ if(fscanf(f, "%20d %1024s %128s port %128s", &pid, controlcookie, host, port) != 4) {
+ fprintf(stderr, "Could not parse pid file %s\n", pidfilename);
return 1;
}
- fd = socket(PF_UNIX, SOCK_STREAM, 0);
- if(fd < 0) {
- fprintf(stderr, _("Cannot create UNIX socket: %s\n"), strerror(errno));
+#ifdef HAVE_MINGW
+ if(WSAStartup(MAKEWORD(2, 2), &wsa_state)) {
+ fprintf(stderr, "System call `%s' failed: %s", "WSAStartup", winerror(GetLastError()));
return 1;
}
+#endif
- memset(&addr, 0, sizeof addr);
- addr.sun_family = AF_UNIX;
- strncpy(addr.sun_path, controlsocketname, sizeof addr.sun_path - 1);
+ struct addrinfo hints = {
+ .ai_family = AF_UNSPEC,
+ .ai_socktype = SOCK_STREAM,
+ .ai_protocol = IPPROTO_TCP,
+ .ai_flags = 0,
+ };
- if(connect(fd, (struct sockaddr *)&addr, sizeof addr) < 0) {
- fprintf(stderr, _("Cannot connect to %s: %s\n"), controlsocketname, strerror(errno));
+ struct addrinfo *res = NULL;
+
+ if(getaddrinfo(host, port, &hints, &res) || !res) {
+ fprintf(stderr, "Cannot resolve %s port %s: %s", host, port, strerror(errno));
return 1;
}
- if(fullread(fd, &greeting, sizeof greeting) == -1) {
- fprintf(stderr, _("Cannot read greeting from control socket: %s\n"),
- strerror(errno));
+ fd = socket(res->ai_family, SOCK_STREAM, IPPROTO_TCP);
+ if(fd < 0) {
+ fprintf(stderr, "Cannot create TCP socket: %s\n", sockstrerror(sockerrno));
return 1;
}
- if(greeting.version != TINC_CTL_VERSION_CURRENT) {
- fprintf(stderr, _("Version mismatch: server %d, client %d\n"),
- greeting.version, TINC_CTL_VERSION_CURRENT);
+#ifdef HAVE_MINGW
+ unsigned long arg = 0;
+
+ if(ioctlsocket(fd, FIONBIO, &arg) != 0) {
+ 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));
return 1;
}
- struct ucred cred;
- socklen_t credlen = sizeof cred;
+ freeaddrinfo(res);
- if(getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &cred, &credlen) < 0) {
- fprintf(stderr, _("Could not obtain PID: %s\n"), strerror(errno));
+ char line[4096];
+ char data[4096];
+ int code, version, req;
+
+ 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));
+ return 1;
+ }
+
+ 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");
return 1;
}
if(!strcasecmp(argv[optind], "pid")) {
- printf("%d\n", cred.pid);
+ printf("%d\n", pid);
return 0;
}
if(!strcasecmp(argv[optind], "stop")) {
- return send_ctl_request_cooked(fd, REQ_STOP, NULL, 0) != -1;
+#ifndef HAVE_MINGW
+ 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;
+ }
+#else
+ if(!remove_service())
+ return 1;
+#endif
+ return 0;
}
if(!strcasecmp(argv[optind], "reload")) {
- return send_ctl_request_cooked(fd, REQ_RELOAD, NULL, 0) != -1;
- }
-
- if(!strcasecmp(argv[optind], "restart")) {
- return send_ctl_request_cooked(fd, REQ_RESTART, NULL, 0) != -1;
+ sendline(fd, "%d %d", CONTROL, REQ_RELOAD);
+ if(!recvline(fd, line, sizeof line) || sscanf(line, "%d %d %d", &code, &req, &result) != 3 || code != CONTROL || req != REQ_RELOAD || result) {
+ fprintf(stderr, "Could not reload tinc daemon\n");
+ return 1;
+ }
+ return 0;
}
- if(!strcasecmp(argv[optind], "dump")) {
- if (argc < optind + 2) {
- fprintf(stderr, _("Not enough arguments.\n"));
- usage(true);
+ if(!strcasecmp(argv[optind], "restart")) {
+ sendline(fd, "%d %d", CONTROL, REQ_RESTART);
+ if(!recvline(fd, line, sizeof line) || sscanf(line, "%d %d %d", &code, &req, &result) != 3 || code != CONTROL || req != REQ_RESTART || result) {
+ fprintf(stderr, "Could not restart tinc daemon\n");
return 1;
}
+ return 0;
+ }
- if(!strcasecmp(argv[optind+1], "nodes")) {
- return send_ctl_request_cooked(fd, REQ_DUMP_NODES, NULL, 0) != -1;
+ if(!strcasecmp(argv[optind], "retry")) {
+ sendline(fd, "%d %d", CONTROL, REQ_RETRY);
+ if(!recvline(fd, line, sizeof line) || sscanf(line, "%d %d %d", &code, &req, &result) != 3 || code != CONTROL || req != REQ_RETRY || result) {
+ fprintf(stderr, "Could not retry outgoing connections\n");
+ return 1;
}
+ return 0;
+ }
- if(!strcasecmp(argv[optind+1], "edges")) {
- return send_ctl_request_cooked(fd, REQ_DUMP_EDGES, NULL, 0) != -1;
+ if(!strcasecmp(argv[optind], "dump")) {
+ if(argc < optind + 2) {
+ fprintf(stderr, "Not enough arguments.\n");
+ usage(true);
+ return 1;
}
- if(!strcasecmp(argv[optind+1], "subnets")) {
- return send_ctl_request_cooked(fd, REQ_DUMP_SUBNETS, NULL, 0) != -1;
+ bool do_graph = false;
+
+ if(!strcasecmp(argv[optind+1], "nodes"))
+ sendline(fd, "%d %d", CONTROL, REQ_DUMP_NODES);
+ else if(!strcasecmp(argv[optind+1], "edges"))
+ sendline(fd, "%d %d", CONTROL, REQ_DUMP_EDGES);
+ else if(!strcasecmp(argv[optind+1], "subnets"))
+ sendline(fd, "%d %d", CONTROL, REQ_DUMP_SUBNETS);
+ else if(!strcasecmp(argv[optind+1], "connections"))
+ sendline(fd, "%d %d", CONTROL, REQ_DUMP_CONNECTIONS);
+ else if(!strcasecmp(argv[optind+1], "graph")) {
+ sendline(fd, "%d %d", CONTROL, REQ_DUMP_NODES);
+ sendline(fd, "%d %d", CONTROL, REQ_DUMP_EDGES);
+ do_graph = true;
+ printf("digraph {\n");
+ } else {
+ fprintf(stderr, "Unknown dump type '%s'.\n", argv[optind+1]);
+ usage(true);
+ return 1;
}
- if(!strcasecmp(argv[optind+1], "connections")) {
- return send_ctl_request_cooked(fd, REQ_DUMP_CONNECTIONS, NULL, 0) != -1;
- }
+ while(recvline(fd, line, sizeof line)) {
+ char node1[4096], node2[4096];
+ int n = sscanf(line, "%d %d %s to %s", &code, &req, node1, node2);
+ if(n == 2) {
+ if(do_graph && req == REQ_DUMP_NODES)
+ continue;
+ else {
+ if(do_graph)
+ printf("}\n");
+ return 0;
+ }
+ }
+ if(n < 2)
+ break;
- if(!strcasecmp(argv[optind+1], "graph")) {
- return send_ctl_request_cooked(fd, REQ_DUMP_GRAPH, NULL, 0) != -1;
+ 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);
+ }
}
- fprintf(stderr, _("Unknown dump type '%s'.\n"), argv[optind+1]);
- usage(true);
+ fprintf(stderr, "Error receiving dump\n");
return 1;
}
if(!strcasecmp(argv[optind], "purge")) {
- return send_ctl_request_cooked(fd, REQ_PURGE, NULL, 0) != -1;
+ sendline(fd, "%d %d", CONTROL, REQ_PURGE);
+ if(!recvline(fd, line, sizeof line) || sscanf(line, "%d %d %d", &code, &req, &result) != 3 || code != CONTROL || req != REQ_PURGE || result) {
+ fprintf(stderr, "Could not purge tinc daemon\n");
+ return 1;
+ }
+ return 0;
}
if(!strcasecmp(argv[optind], "debug")) {
- int debuglevel;
+ int debuglevel, origlevel;
if(argc != optind + 2) {
fprintf(stderr, "Invalid arguments.\n");
return 1;
}
debuglevel = atoi(argv[optind+1]);
- return send_ctl_request_cooked(fd, REQ_SET_DEBUG, &debuglevel,
- sizeof(debuglevel)) != -1;
+
+ sendline(fd, "%d %d %d", CONTROL, REQ_SET_DEBUG, debuglevel);
+ if(!recvline(fd, line, sizeof line) || sscanf(line, "%d %d %d", &code, &req, &origlevel) != 3 || code != CONTROL || req != REQ_SET_DEBUG) {
+ fprintf(stderr, "Could not purge tinc daemon\n");
+ return 1;
+ }
+
+ fprintf(stderr, "Old level %d, new level %d\n", origlevel, debuglevel);
+ return 0;
}
- if(!strcasecmp(argv[optind], "retry")) {
- return send_ctl_request_cooked(fd, REQ_RETRY, NULL, 0) != -1;
+ if(!strcasecmp(argv[optind], "connect")) {
+ if(argc != optind + 2) {
+ fprintf(stderr, "Invalid arguments.\n");
+ return 1;
+ }
+ char *name = argv[optind + 1];
+
+ sendline(fd, "%d %d %s", CONTROL, REQ_CONNECT, name);
+ if(!recvline(fd, line, sizeof line) || sscanf(line, "%d %d %d", &code, &req, &result) != 3 || code != CONTROL || req != REQ_CONNECT || result) {
+ fprintf(stderr, "Could not connect to %s\n", name);
+ return 1;
+ }
+ return 0;
+ }
+
+ if(!strcasecmp(argv[optind], "disconnect")) {
+ if(argc != optind + 2) {
+ fprintf(stderr, "Invalid arguments.\n");
+ return 1;
+ }
+ char *name = argv[optind + 1];
+
+ sendline(fd, "%d %d %s", CONTROL, REQ_DISCONNECT, name);
+ if(!recvline(fd, line, sizeof line) || sscanf(line, "%d %d %d", &code, &req, &result) != 3 || code != CONTROL || req != REQ_DISCONNECT || result) {
+ fprintf(stderr, "Could not disconnect %s\n", name);
+ return 1;
+ }
+ return 0;
+ }
+
+#ifdef HAVE_CURSES
+ if(!strcasecmp(argv[optind], "top")) {
+ top(fd);
+ return 0;
+ }
+#endif
+
+ if(!strcasecmp(argv[optind], "pcap")) {
+ pcap(fd, stdout, optind < argc - 1 ? atoi(argv[optind + 1]) : 0);
+ return 0;
+ }
+
+ if(!strcasecmp(argv[optind], "log")) {
+ logcontrol(fd, stdout, optind < argc - 1 ? atoi(argv[optind + 1]) : -1);
+ return 0;
}
- fprintf(stderr, _("Unknown command `%s'.\n"), argv[optind]);
+ fprintf(stderr, "Unknown command `%s'.\n", argv[optind]);
usage(true);
close(fd);
projects / tinc / blobdiff