]> git.meshlink.io Git - meshlink/blobdiff - src/tincctl.c
Add a very primitive "top" command to tincctl.
[meshlink] / src / tincctl.c
index aed1c315a0009d489cd5e113f5a209843a88c78e..489d10cd0e32dab518dc4085ab19c0a97d983701 100644 (file)
@@ -1,6 +1,6 @@
 /*
     tincctl.c -- Controlling a running tincd
-    Copyright (C) 2007 Guus Sliepen <guus@tinc-vpn.org>
+    Copyright (C) 2007-2011 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 "rsagen.h"
+#include "utils.h"
+#include "tincctl.h"
+#include "top.h"
 
 /* The name this program was run with. */
 char *program_name = NULL;
@@ -49,30 +44,36 @@ int kill_tincd = 0;
 /* If nonzero, generate public/private keypair for this host/net. */
 int generate_keys = 0;
 
+static char *name = NULL;
 static char *identname = NULL;                         /* program name for syslog */
-static char *controlsocketname = NULL;                 /* pid file location */
+static char *controlcookiename = NULL;                 /* cookie 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},
+       {"controlcookie", 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"
+               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"
+                               "      --controlcookie=FILENAME  Read control socket from FILENAME.\n"
                                "      --help                    Display this help and exit.\n"
                                "      --version                 Output version information and exit.\n"
                                "\n"
@@ -93,8 +94,12 @@ static void usage(bool status) {
                                "  debug N                    Set debug level\n"
                                "  retry                      Retry all outgoing connections\n"
                                "  reload                     Partial reload of configuration\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
+                               "\n");
+               printf("Report bugs to tinc@tinc-vpn.org.\n");
        }
 }
 
@@ -124,7 +129,7 @@ static bool parse_options(int argc, char **argv) {
                                break;
 
                        case 5:                                 /* open control socket here */
-                               controlsocketname = xstrdup(optarg);
+                               controlcookiename = xstrdup(optarg);
                                break;
 
                        case '?':
@@ -149,12 +154,12 @@ FILE *ask_and_open(const char *filename, const char *what, const char *mode) {
        /* 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"),
+                       fprintf(stderr, "Error while reading stdin: %s\n",
                                        strerror(errno));
                        return NULL;
                }
@@ -185,70 +190,32 @@ FILE *ask_and_open(const char *filename, const char *what, const char *mode) {
        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 */
-
-static void indicator(int a, int b, void *p) {
-       switch (a) {
-               case 0:
-                       fprintf(stderr, ".");
-                       break;
-
-               case 1:
-                       fprintf(stderr, "+");
-                       break;
-
-               case 2:
-                       fprintf(stderr, "-");
-                       break;
-
-               case 3:
-                       switch (b) {
-                               case 0:
-                                       fprintf(stderr, " p\n");
-                                       break;
-
-                               case 1:
-                                       fprintf(stderr, " q\n");
-                                       break;
-
-                               default:
-                                       fprintf(stderr, "?");
-                       }
-                       break;
-
-               default:
-                       fprintf(stderr, "?");
-       }
-}
-
 /*
   Generate a public/private RSA keypair, and ask for a file to store
   them in.
 */
 static bool keygen(int bits) {
-       RSA *rsa_key;
+       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;
@@ -259,26 +226,28 @@ static bool keygen(int bits) {
 #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);
 
@@ -292,178 +261,123 @@ static void make_names(void) {
 #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(!controlcookiename)
+                       xasprintf(&controlcookiename, "%s/cookie", confbase);
                RegCloseKey(key);
                if(*installdir)
                        return;
        }
 #endif
 
-       if(!controlsocketname)
-               asprintf(&controlsocketname, "%s/run/%s.control/socket", LOCALSTATEDIR, identname);
+       if(!controlcookiename)
+               xasprintf(&controlcookiename, "%s/run/%s.cookie", 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;
+bool recvline(int fd, char *line, size_t len) {
+       static char buffer[4096];
+       static size_t blen = 0;
+       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;
-}
 
-/*
-   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;
-
-       if(res_errno_p == NULL)
-               return -1;
-
-       memset(&req, 0, sizeof req);
-       req.length = sizeof req + outdatalen;
-       req.type = type;
-       req.res_errno = 0;
-
-       while((rv = writev(fd, vector, 2)) == -1 && errno == EINTR) ;
-       if(rv != req.length)
-               return -1;
-
-       if(fullread(fd, &req, sizeof req) == -1)
-               return -1;
-
-       if(req.length < sizeof req) {
-               errno = EINVAL;
-               return -1;
-       }
-
-       if(req.length > sizeof req) {
-               if(indata_p == NULL) {
-                       errno = EINVAL;
-                       return -1;
-               }
-
-               indata = xmalloc(req.length - sizeof req);
+       if(newline - buffer >= len)
+               return false;
 
-               if(fullread(fd, indata, req.length - sizeof req) == -1) {
-                       free(indata);
-                       return -1;
-               }
+       len = newline - buffer;
 
-               *indata_p = indata;
-               if(indatalen_p != NULL)
-                       *indatalen_p = req.length - sizeof req;
-       }
+       memcpy(line, buffer, len);
+       line[len] = 0;
+       memmove(buffer, newline + 1, blen - len - 1);
+       blen -= len + 1;
 
-       *res_errno_p = req.res_errno;
-
-       return 0;
+       return true;
 }
 
-/*
-   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;
+bool sendline(int fd, char *format, ...) {
+       static char buffer[4096];
+       char *p = buffer;
+       size_t blen = 0;
+       va_list ap;
 
-       if(send_ctl_request(fd, type, outdata, outdatalen, &res_errno,
-                                               (void**) &buf, &buflen)) {
-               fprintf(stderr, _("Error sending request: %s\n"), strerror(errno));
-               return -1;
-       }
+       va_start(ap, format);
+       blen = vsnprintf(buffer, sizeof buffer, format, ap);
+       va_end(ap);
 
-       if(buf != NULL) {
-               printf("%*s", buflen, buf);
-               free(buf);
-       }
+       if(blen < 0 || blen >= sizeof buffer)
+               return false;
+
+       buffer[blen] = '\n';
+       blen++;
 
-       if(res_errno != 0) {
-               fprintf(stderr, _("Server reported error: %s\n"), strerror(res_errno));
-               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;
        }
 
-       return 0;
+       return true;    
 }
 
 int main(int argc, char *argv[], char *envp[]) {
-       struct sockaddr_un addr;
-       tinc_ctl_greeting_t greeting;
-       tinc_ctl_request_t req;
        int fd;
-       int len;
        int result;
+       int port;
+       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,
+               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("Copyright (C) 1998-2009 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;
        }
@@ -474,7 +388,7 @@ int main(int argc, char *argv[], char *envp[]) {
        }
 
        if(optind >= argc) {
-               fprintf(stderr, _("Not enough arguments.\n"));
+               fprintf(stderr, "Not enough arguments.\n");
                usage(true);
                return 1;
        }
@@ -482,13 +396,13 @@ int main(int argc, char *argv[], char *envp[]) {
        // First handle commands that don't involve connecting to a running tinc daemon.
 
        if(!strcasecmp(argv[optind], "generate-keys")) {
-               return !keygen(optind > argc ? atoi(argv[optind + 1]) : 1024);
+               return !keygen(optind > argc ? atoi(argv[optind + 1]) : 2048);
        }
 
        if(!strcasecmp(argv[optind], "start")) {
                argv[optind] = NULL;
-               execve("tincd", argv, envp);
-               fprintf(stderr, _("Could not start tincd: %s"), strerror(errno));
+               execve(SBINDIR "/tincd", argv, envp);
+               fprintf(stderr, "Could not start tincd: %s", strerror(errno));
                return 1;
        }
 
@@ -499,132 +413,232 @@ int main(int argc, char *argv[], char *envp[]) {
         * ancestors are writable only by trusted users, which we don't verify.
         */
 
-       struct stat statbuf;
-       char *lastslash = strrchr(controlsocketname, '/');
-       if(lastslash != NULL) {
-               /* control socket is not in cwd; stat its parent */
-               *lastslash = 0;
-               result = stat(controlsocketname, &statbuf);
-               *lastslash = '/';
-       } else
-               result = stat(".", &statbuf);
-
-       if(result < 0) {
-               fprintf(stderr, _("Unable to check control socket directory permissions: %s\n"), strerror(errno));
+       FILE *f = fopen(controlcookiename, "r");
+       if(!f) {
+               fprintf(stderr, "Could not open control socket cookie file %s: %s\n", controlcookiename, strerror(errno));
                return 1;
        }
-
-       if(statbuf.st_uid != 0 || (statbuf.st_mode & S_IXOTH) != 0 || (statbuf.st_gid != 0 && (statbuf.st_mode & S_IXGRP)) != 0) {
-               fprintf(stderr, _("Insecure permissions on control socket directory\n"));
+       if(fscanf(f, "%1024s %d %d", controlcookie, &port, &pid) != 3) {
+               fprintf(stderr, "Could not parse control socket cookie file %s\n", controlcookiename);
                return 1;
        }
 
-       if(strlen(controlsocketname) >= sizeof addr.sun_path) {
-               fprintf(stderr, _("Control socket filename too long!\n"));
+#ifdef HAVE_MINGW
+       if(WSAStartup(MAKEWORD(2, 2), &wsa_state)) {
+               fprintf(stderr, "System call `%s' failed: %s", "WSAStartup", winerror(GetLastError()));
                return 1;
        }
+#endif
 
-       fd = socket(PF_UNIX, SOCK_STREAM, 0);
+       struct sockaddr_in addr;
+       memset(&addr, 0, sizeof addr);
+       addr.sin_family = AF_INET;
+       addr.sin_addr.s_addr = htonl(0x7f000001);
+       addr.sin_port = htons(port);
+
+       fd = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
        if(fd < 0) {
-               fprintf(stderr, _("Cannot create UNIX socket: %s\n"), strerror(errno));
+               fprintf(stderr, "Cannot create TCP socket: %s\n", sockstrerror(sockerrno));
                return 1;
        }
 
-       memset(&addr, 0, sizeof addr);
-       addr.sun_family = AF_UNIX;
-       strncpy(addr.sun_path, controlsocketname, sizeof addr.sun_path - 1);
+#ifdef HAVE_MINGW
+       unsigned long arg = 0;
+
+       if(ioctlsocket(fd, FIONBIO, &arg) != 0) {
+               fprintf(stderr, "ioctlsocket failed: %s", sockstrerror(sockerrno));
+       }
+#endif
 
        if(connect(fd, (struct sockaddr *)&addr, sizeof addr) < 0) {
-               fprintf(stderr, _("Cannot connect to %s: %s\n"), controlsocketname, strerror(errno));
+                       
+               fprintf(stderr, "Cannot connect to %s: %s\n", controlcookiename, sockstrerror(sockerrno));
                return 1;
        }
 
-       if(fullread(fd, &greeting, sizeof greeting) == -1) {
-               fprintf(stderr, _("Cannot read greeting from control socket: %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;
        }
 
-       if(greeting.version != TINC_CTL_VERSION_CURRENT) {
-               fprintf(stderr, _("Version mismatch: server %d, client %d\n"),
-                               greeting.version, TINC_CTL_VERSION_CURRENT);
+       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", greeting.pid);
+               printf("%d\n", pid);
                return 0;
        }
 
        if(!strcasecmp(argv[optind], "stop")) {
-               return send_ctl_request_cooked(fd, REQ_STOP, NULL, 0) != -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;
+               }
+               return 0;
        }
 
        if(!strcasecmp(argv[optind], "reload")) {
-               return send_ctl_request_cooked(fd, REQ_RELOAD, 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], "restart")) {
-               return send_ctl_request_cooked(fd, REQ_RESTART, NULL, 0) != -1;
+               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], "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], "dump")) {
                if(argc < optind + 2) {
-                       fprintf(stderr, _("Not enough arguments.\n"));
+                       fprintf(stderr, "Not enough arguments.\n");
                        usage(true);
                        return 1;
                }
 
-               if(!strcasecmp(argv[optind+1], "nodes")) {
-                       return send_ctl_request_cooked(fd, REQ_DUMP_NODES, NULL, 0) != -1;
-               }
-
-               if(!strcasecmp(argv[optind+1], "edges")) {
-                       return send_ctl_request_cooked(fd, REQ_DUMP_EDGES, NULL, 0) != -1;
-               }
-
-               if(!strcasecmp(argv[optind+1], "subnets")) {
-                       return send_ctl_request_cooked(fd, REQ_DUMP_SUBNETS, NULL, 0) != -1;
+               bool do_graph = false;
+               int dumps = 1;
+
+               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;
+                       dumps = 2;
+                       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], "reload")) {
-               return send_ctl_request_cooked(fd, REQ_RELOAD, NULL, 0) != -1;
+       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;
        }
 
-       fprintf(stderr, _("Unknown command `%s'.\n"), argv[optind]);
+#ifdef HAVE_CURSES
+       if(!strcasecmp(argv[optind], "top")) {
+               top(fd);
+               return 0;
+       }
+#endif
+
+       fprintf(stderr, "Unknown command `%s'.\n", argv[optind]);
        usage(true);
        
        close(fd);