#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 "top.h"
#ifdef HAVE_MINGW
-#define mkdir(a, b) mkdir(a)
+#define SCRIPTEXTENSION ".bat"
+#else
+#define SCRIPTEXTENSION ""
#endif
static char **orig_argv;
static char *name = NULL;
static char controlcookie[1025];
-static char *tinc_conf = NULL;
-static char *hosts_dir = NULL;
+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;
-static bool tty = true;
+bool tty = true;
+bool confbasegiven = false;
+bool netnamegiven = false;
#ifdef HAVE_MINGW
static struct WSAData wsa_state;
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}
};
" 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"
" 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 */
break;
case 'c': /* config file */
confbase = xstrdup(optarg);
+ confbasegiven = true;
break;
case 'n': /* net name given */
show_version = true;
break;
- case 5: /* open control socket here */
+ case 3: /* open control socket here */
pidfilename = xstrdup(optarg);
break;
- case 6: /* force */
+ case 4: /* force */
force = true;
break;
w = fopen(tmpfile, "w");
+#ifdef HAVE_FCHMOD
+ /* Let the temporary file have the same permissions as the original. */
+
+ if(w) {
+ struct stat st = {.st_mode = 0600};
+ fstat(fileno(r), &st);
+ fchmod(fileno(w), st.st_mode);
+ }
+#endif
+
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"))) {
/* Check stdin and stdout */
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;
}
filename = buf2;
}
- umask(0077); /* Disallow everything for group and other */
-
disable_old_keys(filename, what);
/* Open it first to keep the inode busy */
them in.
*/
static bool ecdsa_keygen(bool ask) {
- ecdsa_t key;
+ ecdsa_t *key;
FILE *f;
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
fchmod(fileno(f), 0600);
#endif
- 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);
if(!f)
return false;
- 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);
+ ecdsa_free(key);
return true;
}
them in.
*/
static bool rsa_keygen(int bits, bool ask) {
- rsa_t key;
+ rsa_t *key;
FILE *f;
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
fchmod(fileno(f), 0600);
#endif
- 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);
if(!f)
return false;
- 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);
+ rsa_free(key);
return true;
}
-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)
}
#endif
-static bool connect_tincd(bool verbose) {
+bool connect_tincd(bool verbose) {
if(fd >= 0) {
fd_set r;
FD_ZERO(&r);
c = "tincd";
int nargc = 0;
- char **nargv = xmalloc_and_zero((optind + argc) * sizeof *nargv);
+ char **nargv = xzalloc((optind + argc) * sizeof *nargv);
nargv[nargc++] = c;
for(int i = 1; i < optind; i++)
free(nargv);
- int status = -1;
- if(waitpid(pid, &status, 0) != pid || !WIFEXITED(status) || WEXITSTATUS(status)) {
+ 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;
}
}
static int cmd_restart(int argc, char *argv[]) {
- cmd_stop(argc, argv);
+ cmd_stop(1, argv);
return cmd_start(argc, argv);
}
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(argc > 2) {
fprintf(stderr, "Too many arguments!\n");
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;
}
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(bool verbose) {
+char *get_my_name(bool verbose) {
FILE *f = fopen(tinc_conf, "r");
if(!f) {
if(verbose)
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},
+ {"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},
{"KeyExpire", VAR_SERVER},
{"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},
{"Port", VAR_HOST},
{"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},
+ {"Weight", VAR_HOST | VAR_SAFE},
{NULL, 0}
};
/* Some simple checks. */
bool found = false;
+ bool warnonremove = false;
for(int i = 0; variables[i].name; i++) {
if(strcasecmp(variables[i].name, variable))
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;
}
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);
- }
+ fprintf(stderr, "Could not open configuration file %s: %s\n", filename, strerror(errno));
+ return 1;
}
char *tmpfile = NULL;
}
// 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));
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;
+}
+
static int cmd_init(int argc, char *argv[]) {
if(!access(tinc_conf, F_OK)) {
fprintf(stderr, "Configuration file %s already exists!\n", tinc_conf);
if(!rsa_keygen(2048, false) || !ecdsa_keygen(false))
return 1;
+
+ if(!try_bind(655)) {
+ srand(time(NULL));
+ int port = 0;
+ for(int i = 0; i < 100; i++) {
+ port = 0x1000 + (rand() & 0x7fff);
+ if(try_bind(port))
+ break;
+ port = 0;
+ }
+ if(port) {
+ char *filename;
+ xasprintf(&filename, "%s" SLASH "hosts" SLASH "%s", confbase, name);
+ FILE *f = fopen(filename, "a");
+ free(filename);
+ if(!f) {
+ port = 0;
+ } else {
+ fprintf(f, "Port = %d\n", port);
+ fclose(f);
+ }
+ }
+
+ if(!port)
+ fprintf(stderr, "Warning: could not bind to port 655. Please change tinc's Port manually.\n");
+ else
+ fprintf(stderr, "Warning: could not bind to port 655. Tinc will instead listen on port %d.\n", port);
+ }
+
#ifndef HAVE_MINGW
char *filename;
xasprintf(&filename, "%s" SLASH "tinc-up", confbase);
fprintf(stderr, "Could not create file %s: %s\n", filename, strerror(errno));
return 1;
}
- fchmod(fileno(f), 0755);
+ mode_t mask = umask(0);
+ umask(mask);
+ fchmod(fileno(f), 0755 & ~mask);
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);
}
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},
- {"change", cmd_config},
- {"replace", cmd_config},
{"init", cmd_init},
{"generate-keys", cmd_generate_keys},
{"generate-rsa-keys", cmd_generate_rsa_keys},
{"import", cmd_import},
{"exchange", cmd_exchange},
{"exchange-all", cmd_exchange_all},
+ {"invite", cmd_invite},
+ {"join", cmd_join},
{NULL, NULL},
};
i++;
while(commands[i].command) {
- if(!strncasecmp(commands[i].command, text, strlen(text)))
+ if(!commands[i].hidden && !strncasecmp(commands[i].command, text, strlen(text)))
return xstrdup(commands[i].command);
i++;
}
}
static char *complete_config(const char *text, int state) {
- const char *sub[] = {"get", "set", "add", "del"};
static int i;
- if(!state) {
+
+ 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 {
+ 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);
+ 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++;
}
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))
+ 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 0;
}
+ crypto_init();
+
tty = isatty(0) && isatty(1);
if(optind >= argc)
projects / tinc / blobdiff