+
+static int cmd_connect(int argc, char *argv[]) {
+ if(argc != 2) {
+ fprintf(stderr, "Invalid number of arguments.\n");
+ return 1;
+ }
+
+ if(!check_id(argv[1])) {
+ fprintf(stderr, "Invalid name for node.\n");
+ return 1;
+ }
+
+ if(!connect_tincd(true))
+ return 1;
+
+ sendline(fd, "%d %d %s", CONTROL, REQ_CONNECT, argv[1]);
+ 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", argv[1]);
+ return 1;
+ }
+
+ return 0;
+}
+
+static int cmd_disconnect(int argc, char *argv[]) {
+ if(argc != 2) {
+ fprintf(stderr, "Invalid number of arguments.\n");
+ return 1;
+ }
+
+ if(!check_id(argv[1])) {
+ fprintf(stderr, "Invalid name for node.\n");
+ return 1;
+ }
+
+ if(!connect_tincd(true))
+ return 1;
+
+ sendline(fd, "%d %d %s", CONTROL, REQ_DISCONNECT, argv[1]);
+ 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", argv[1]);
+ return 1;
+ }
+
+ return 0;
+}
+
+static int cmd_top(int argc, char *argv[]) {
+#ifdef HAVE_CURSES
+ 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");
+ return 1;
+#endif
+}
+
+static int cmd_pcap(int argc, char *argv[]) {
+ if(!connect_tincd(true))
+ return 1;
+
+ pcap(fd, stdout, argc > 1 ? atoi(argv[1]) : 0);
+ return 0;
+}
+
+static int cmd_log(int argc, char *argv[]) {
+ if(!connect_tincd(true))
+ return 1;
+
+ logcontrol(fd, stdout, argc > 1 ? atoi(argv[1]) : -1);
+ return 0;
+}
+
+static int cmd_pid(int argc, char *argv[]) {
+ if(!connect_tincd(true) && !pid)
+ return 1;
+
+ printf("%d\n", pid);
+ return 0;
+}
+
+static 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() {
+ FILE *f = fopen(tinc_conf, "r");
+ if(!f) {
+ fprintf(stderr, "Could not open %s: %s\n", tinc_conf, strerror(errno));
+ return NULL;
+ }
+
+ char buf[4096];
+ char *value;
+ while(fgets(buf, sizeof buf, f)) {
+ int len = strcspn(buf, "\t =");
+ value = buf + len;
+ value += strspn(value, "\t ");
+ if(*value == '=') {
+ value++;
+ value += strspn(value, "\t ");
+ }
+ if(!rstrip(value))
+ continue;
+ buf[len] = 0;
+ if(strcasecmp(buf, "Name"))
+ continue;
+ if(*value) {
+ fclose(f);
+ return strdup(value);
+ }
+ }
+
+ fclose(f);
+ 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[] = {
+ /* Server configuration */
+ {"AddressFamily", VAR_SERVER},
+ {"BindToAddress", VAR_SERVER | VAR_MULTIPLE},
+ {"BindToInterface", VAR_SERVER},
+ {"Broadcast", VAR_SERVER},
+ {"ConnectTo", VAR_SERVER | VAR_MULTIPLE},
+ {"DecrementTTL", VAR_SERVER},
+ {"Device", VAR_SERVER},
+ {"DeviceType", VAR_SERVER},
+ {"DirectOnly", VAR_SERVER},
+ {"ECDSAPrivateKeyFile", VAR_SERVER},
+ {"ExperimentalProtocol", VAR_SERVER},
+ {"Forwarding", VAR_SERVER},
+ {"GraphDumpFile", VAR_SERVER},
+ {"Hostnames", VAR_SERVER},
+ {"IffOneQueue", VAR_SERVER},
+ {"Interface", VAR_SERVER},
+ {"KeyExpire", VAR_SERVER},
+ {"LocalDiscovery", VAR_SERVER},
+ {"MACExpire", VAR_SERVER},
+ {"MaxOutputBufferSize", VAR_SERVER},
+ {"MaxTimeout", VAR_SERVER},
+ {"Mode", VAR_SERVER},
+ {"Name", VAR_SERVER},
+ {"PingInterval", VAR_SERVER},
+ {"PingTimeout", VAR_SERVER},
+ {"PriorityInheritance", VAR_SERVER},
+ {"PrivateKey", VAR_SERVER | VAR_OBSOLETE},
+ {"PrivateKeyFile", VAR_SERVER},
+ {"ProcessPriority", VAR_SERVER},
+ {"Proxy", VAR_SERVER},
+ {"ReplayWindow", 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_HOST | VAR_OBSOLETE},
+ {"PublicKeyFile", VAR_SERVER | VAR_HOST | VAR_OBSOLETE},
+ {"Subnet", VAR_HOST | VAR_MULTIPLE},
+ {"TCPOnly", VAR_SERVER | VAR_HOST},
+ {"Weight", VAR_HOST},
+ {NULL, 0}
+};
+
+static int cmd_config(int argc, char *argv[]) {
+ if(argc < 2) {
+ fprintf(stderr, "Invalid number of arguments.\n");
+ return 1;
+ }
+
+ 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;
+ } else if(!strcasecmp(argv[1], "replace") || !strcasecmp(argv[1], "set") || !strcasecmp(argv[1], "change")) {
+ argv++, argc--, action = 0;
+ }
+
+ if(argc < 2) {
+ fprintf(stderr, "Invalid number of arguments.\n");
+ return 1;
+ }
+
+ // Concatenate the rest of the command line
+ strncpy(line, argv[1], sizeof line - 1);
+ for(int i = 2; i < argc; i++) {
+ strncat(line, " ", sizeof line - 1 - strlen(line));
+ strncat(line, argv[i], sizeof line - 1 - strlen(line));
+ }
+
+ // Liberal parsing into node name, variable name and value.
+ char *node = NULL;
+ char *variable;
+ 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';
+ variable = strchr(line, '.');
+ if(variable) {
+ node = line;
+ *variable++ = 0;
+ } else {
+ variable = line;
+ }
+
+ if(!*variable) {
+ fprintf(stderr, "No variable given.\n");
+ return 1;
+ }
+
+ if(action >= 0 && !*value) {
+ fprintf(stderr, "No value for variable given.\n");
+ return 1;
+ }
+
+ if(action < -1 && *value)
+ action = 0;
+
+ /* Some simple checks. */
+ bool found = false;
+
+ for(int i = 0; variables[i].name; i++) {
+ if(strcasecmp(variables[i].name, variable))
+ continue;
+
+ found = true;
+ variable = (char *)variables[i].name;
+
+ /* Discourage use of obsolete variables. */
+
+ if(variables[i].type & VAR_OBSOLETE && action >= 0) {
+ if(force) {
+ fprintf(stderr, "Warning: %s is an obsolete variable!\n", variable);
+ } else {
+ fprintf(stderr, "%s is an obsolete variable! Use --force to use it anyway.\n", variable);
+ return 1;
+ }
+ }
+
+ /* Don't put server variables in host config files */
+
+ if(node && !(variables[i].type & VAR_HOST) && action >= 0) {
+ if(force) {
+ fprintf(stderr, "Warning: %s is not a host configuration variable!\n", variable);
+ } else {
+ fprintf(stderr, "%s is not a host configuration variable! Use --force to use it anyway.\n", variable);
+ return 1;
+ }
+ }
+
+ /* Should this go into our own host config file? */
+
+ if(!node && !(variables[i].type & VAR_SERVER)) {
+ node = get_my_name();
+ if(!node)
+ return 1;
+ }
+
+ break;
+ }
+
+ if(node && !check_id(node)) {
+ fprintf(stderr, "Invalid name for node.\n");
+ return 1;
+ }
+
+ 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);
+ return 1;
+ }
+ }
+
+ // Open the right configuration file.
+ char *filename;
+ if(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;
+ }
+
+ // 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));
+ return 1;
+ } else {
+ fprintf(stderr, "Created configuration file %s.\n", filename);
+ }
+ }
+
+ 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;
+ }
+ }
+
+ // 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;
+ strncpy(buf2, buf1, sizeof buf2);
+
+ // Parse line in a simple way
+ char *bvalue;
+ int len;
+
+ len = strcspn(buf2, "\t =");
+ bvalue = buf2 + len;
+ bvalue += strspn(bvalue, "\t ");
+ if(*bvalue == '=') {
+ bvalue++;
+ bvalue += strspn(bvalue, "\t ");
+ }
+ rstrip(bvalue);
+ buf2[len] = '\0';
+
+ // Did it match?
+ if(!strcasecmp(buf2, variable)) {
+ // Get
+ if(action < -1) {
+ found = true;
+ printf("%s\n", bvalue);
+ // Del
+ } else if(action == -1) {
+ if(!*value || !strcasecmp(bvalue, value)) {
+ removed = true;
+ continue;
+ }
+ // Set
+ } else if(action == 0) {
+ // 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));
+ return 1;
+ }
+ set = true;
+ continue;
+ }
+ }
+
+ 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;
+ }
+ }
+ }
+ }
+
+ // Make sure we read everything...
+ if(ferror(f) || !feof(f)) {
+ fprintf(stderr, "Error while reading from configuration file %s: %s\n", filename, strerror(errno));
+ return 1;
+ }
+
+ if(fclose(f)) {
+ fprintf(stderr, "Error closing configuration file %s: %s\n", filename, strerror(errno));
+ return 1;
+ }
+
+ // Add new variable if necessary.
+ if(action > 0 || (action == 0 && !set)) {
+ if(fprintf(tf, "%s = %s\n", variable, value) < 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));
+ return 1;
+ }
+
+ // Could we find what we had to remove?
+ if(action < 0 && !removed) {
+ remove(tmpfile);
+ fprintf(stderr, "No configuration variables deleted.\n");
+ return *value;
+ }
+
+ // Replace the configuration file with the new one
+#ifdef HAVE_MINGW
+ if(remove(filename)) {
+ fprintf(stderr, "Error replacing file %s: %s\n", filename, strerror(errno));
+ return 1;
+ }
+#endif
+ if(rename(tmpfile, filename)) {
+ fprintf(stderr, "Error renaming temporary file %s to configuration file %s: %s\n", tmpfile, filename, strerror(errno));
+ return 1;
+ }
+
+ // Silently try notifying a running tincd of changes.
+ 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 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(tty) {
+ 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 = rstrip(buf);
+ 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[1]);
+ if(!*name) {
+ fprintf(stderr, "No Name given!\n");
+ return 1;
+ }
+ }
+
+ if(!check_id(name)) {
+ 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;
+ }
+
+ if(mkdir(hosts_dir, 0755) && errno != EEXIST) {
+ fprintf(stderr, "Could not create directory %s: %s\n", hosts_dir, strerror(errno));
+ return 1;
+ }
+
+ FILE *f = fopen(tinc_conf, "w");
+ if(!f) {
+ fprintf(stderr, "Could not create file %s: %s\n", tinc_conf, strerror(errno));
+ return 1;
+ }
+
+ fprintf(f, "Name = %s\n", name);
+ fclose(f);
+
+ if(!rsa_keygen(2048, false) || !ecdsa_keygen(false))
+ return 1;
+
+#ifndef HAVE_MINGW
+ char *filename;
+ xasprintf(&filename, "%s" SLASH "tinc-up", confbase);
+ if(access(filename, F_OK)) {
+ FILE *f = fopen(filename, "w");
+ if(!f) {
+ fprintf(stderr, "Could not create file %s: %s\n", filename, strerror(errno));
+ return 1;
+ }
+ fchmod(fileno(f), 0755);
+ fprintf(f, "#!/bin/sh\n\necho 'Unconfigured tinc-up script, please edit!'\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, true) && ecdsa_keygen(true));
+}
+
+static int cmd_generate_rsa_keys(int argc, char *argv[]) {
+ return !rsa_keygen(argc > 1 ? atoi(argv[1]) : 2048, true);
+}
+
+static int cmd_generate_ecdsa_keys(int argc, char *argv[]) {
+ return !ecdsa_keygen(true);
+}
+
+static int cmd_help(int argc, char *argv[]) {
+ usage(false);
+ return 0;
+}
+
+static int cmd_version(int argc, char *argv[]) {
+ version();
+ return 0;
+}
+
+static int cmd_info(int argc, char *argv[]) {
+ if(argc != 2) {
+ fprintf(stderr, "Invalid number of arguments.\n");
+ return 1;
+ }
+
+ if(!connect_tincd(true))
+ return 1;
+
+ return info(fd, argv[1]);
+}
+
+static const char *conffiles[] = {
+ "tinc.conf",
+ "tinc-up",
+ "tinc-down",
+ "subnet-up",
+ "subnet-down",
+ "host-up",
+ "host-down",
+ NULL,
+};
+
+static int cmd_edit(int argc, char *argv[]) {
+ if(argc != 2) {
+ fprintf(stderr, "Invalid number of arguments.\n");
+ return 1;
+ }
+
+ char *filename = NULL;
+
+ if(strncmp(argv[1], "hosts" SLASH, 6)) {
+ for(int i = 0; conffiles[i]; i++) {
+ if(!strcmp(argv[1], conffiles[i])) {
+ xasprintf(&filename, "%s" SLASH "%s", confbase, argv[1]);
+ break;
+ }
+ }
+ } else {
+ argv[1] += 6;
+ }
+
+ if(!filename) {
+ xasprintf(&filename, "%s" SLASH "%s", hosts_dir, argv[1]);
+ char *dash = strchr(argv[1], '-');
+ if(dash) {
+ *dash++ = 0;
+ if((strcmp(dash, "up") && strcmp(dash, "down")) || !check_id(argv[1])) {
+ fprintf(stderr, "Invalid configuration filename.\n");
+ return 1;
+ }
+ }
+ }
+
+ char *command;
+#ifndef HAVE_MINGW
+ xasprintf(&command, "\"%s\" \"%s\"", getenv("VISUAL") ?: getenv("EDITOR") ?: "vi", filename);
+#else
+ xasprintf(&command, "edit \"%s\"", filename);
+#endif
+ int result = system(command);
+ if(result)
+ return result;
+
+ // Silently try notifying a running tincd of changes.
+ 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" 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));
+ return 1;
+ }
+
+ fprintf(out, "Name = %s\n", name);
+ char buf[4096];
+ while(fgets(buf, sizeof buf, in)) {
+ if(strcspn(buf, "\t =") != 4 || strncasecmp(buf, "Name", 4))
+ fputs(buf, out);
+ }
+
+ if(ferror(in)) {
+ fprintf(stderr, "Error while reading configuration file %s: %s\n", filename, strerror(errno));
+ fclose(in);
+ return 1;
+ }
+
+ fclose(in);
+ return 0;
+}
+
+static int cmd_export(int argc, char *argv[]) {
+ char *name = get_my_name();
+ if(!name)
+ return 1;
+
+ return export(name, stdout);
+}
+
+static int cmd_export_all(int argc, char *argv[]) {
+ DIR *dir = opendir(hosts_dir);
+ if(!dir) {
+ fprintf(stderr, "Could not open host configuration directory %s: %s\n", hosts_dir, strerror(errno));
+ return 1;
+ }
+
+ bool first = true;
+ int result = 0;
+ struct dirent *ent;
+
+ while((ent = readdir(dir))) {
+ if(!check_id(ent->d_name))
+ continue;
+
+ if(first)
+ first = false;
+ else
+ printf("#---------------------------------------------------------------#\n");
+
+ result |= export(ent->d_name, stdout);
+ }
+
+ closedir(dir);
+ return result;
+}
+
+static int cmd_import(int argc, char *argv[]) {
+ FILE *in = stdin;
+ FILE *out = NULL;
+
+ char buf[4096];
+ char name[4096];
+ char *filename;
+ int count = 0;
+ bool firstline = true;
+
+ while(fgets(buf, sizeof buf, in)) {
+ if(sscanf(buf, "Name = %s", name) == 1) {
+ if(!check_id(name)) {
+ fprintf(stderr, "Invalid Name in input!\n");
+ return 1;
+ }
+
+ if(out)
+ fclose(out);
+
+ free(filename);
+ 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);
+ out = NULL;
+ continue;
+ }
+
+ out = fopen(filename, "w");
+ if(!out) {
+ fprintf(stderr, "Error creating configuration file %s: %s\n", filename, strerror(errno));
+ return 1;
+ }
+
+ count++;
+ firstline = false;
+ continue;
+ } else if(firstline) {
+ fprintf(stderr, "Junk at the beginning of the input, ignoring.\n");
+ firstline = false;
+ }
+
+
+ if(!strcmp(buf, "#---------------------------------------------------------------#\n"))
+ continue;
+
+ if(out) {
+ if(fputs(buf, out) < 0) {
+ fprintf(stderr, "Error writing to host configuration file %s: %s\n", filename, strerror(errno));
+ return 1;
+ }
+ }
+ }
+
+ if(out)
+ fclose(out);
+
+ if(count) {
+ fprintf(stderr, "Imported %d host configuration files.\n", count);
+ return 0;
+ } else {
+ fprintf(stderr, "No host configuration files imported.\n");
+ return 1;
+ }
+}
+
+static const struct {
+ const char *command;
+ int (*function)(int argc, char *argv[]);
+} commands[] = {
+ {"start", cmd_start},
+ {"stop", cmd_stop},
+ {"restart", cmd_restart},
+ {"reload", cmd_reload},
+ {"dump", cmd_dump},
+ {"purge", cmd_purge},
+ {"debug", cmd_debug},
+ {"retry", cmd_retry},
+ {"connect", cmd_connect},
+ {"disconnect", cmd_disconnect},
+ {"top", cmd_top},
+ {"pcap", cmd_pcap},
+ {"log", cmd_log},
+ {"pid", cmd_pid},
+ {"config", cmd_config},
+ {"init", cmd_init},
+ {"generate-keys", cmd_generate_keys},
+ {"generate-rsa-keys", cmd_generate_rsa_keys},
+ {"generate-ecdsa-keys", cmd_generate_ecdsa_keys},
+ {"help", cmd_help},
+ {"version", cmd_version},
+ {"info", cmd_info},
+ {"edit", cmd_edit},
+ {"export", cmd_export},
+ {"export-all", cmd_export_all},
+ {"import", cmd_import},
+ {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(!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[] = {"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) {
+ const char *sub[] = {"get", "set", "add", "del"};
+ static int i;
+ if(!state) {
+ i = 0;
+ if(!strchr(rl_line_buffer + 7, ' '))
+ i = -4;
+ else {
+ bool found = false;
+ for(int i = 0; i < 4; i++) {
+ if(!strncasecmp(rl_line_buffer + 7, sub[i], strlen(sub[i])) && rl_line_buffer[7 + strlen(sub[i])] == ' ') {
+ found = true;
+ break;
+ }
+ }
+ if(!found)
+ return NULL;
+ }
+ } else {
+ i++;
+ }
+
+ while(i < 0 || variables[i].name) {
+ if(i < 0 && !strncasecmp(sub[i + 4], text, strlen(text)))
+ return xstrdup(sub[i + 4]);
+ if(i >= 0) {
+ 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", 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, "config ", 7))
+ 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);
+ optind = argc;
+
+ 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;
+ }
+ }
+
+ 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();
+
+ if(show_version) {
+ version();
+ return 0;
+ }
+
+ if(show_help) {
+ usage(false);
+ return 0;
+ }
+
+ 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))
+ return commands[i].function(argc - optind, argv + optind);
+ }
+
+ fprintf(stderr, "Unknown command `%s'.\n", argv[optind]);
+ usage(true);
+ return 1;
+}