/* The name this program was run with. */
static char *program_name = NULL;
+static char **orig_argv;
+static int orig_argc;
+
/* If nonzero, display usage information and exit. */
static bool show_help = false;
" edges - all known connections in the VPN\n"
" subnets - all known subnets in the VPN\n"
" connections - all meta connections with ourself\n"
- " graph - graph of the VPN in dotty format\n"
+ " [di]graph - graph of the VPN in dotty format\n"
" info NODE|SUBNET|ADDRESS Give information about a particular NODE, SUBNET or ADDRESS.\n"
" purge Purge unreachable nodes\n"
" debug N Set debug level\n"
return true;
}
+static void disable_old_keys(const char *filename, const char *what) {
+ char tmpfile[PATH_MAX] = "";
+ char buf[1024];
+ bool disabled = false;
+ bool block = false;
+ bool error = false;
+ FILE *r, *w;
+
+ r = fopen(filename, "r");
+ if(!r)
+ return;
+
+ snprintf(tmpfile, sizeof tmpfile, "%s.tmp", filename);
+
+ w = fopen(tmpfile, "w");
+
+ while(fgets(buf, sizeof buf, r)) {
+ if(!block && !strncmp(buf, "-----BEGIN ", 11)) {
+ if((strstr(buf, " EC ") && strstr(what, "ECDSA")) || (strstr(buf, " RSA ") && strstr(what, "RSA"))) {
+ disabled = true;
+ block = true;
+ }
+ }
+
+ bool ecdsapubkey = !strncasecmp(buf, "ECDSAPublicKey", 14) && strchr(" \t=", buf[14]) && strstr(what, "ECDSA");
+
+ if(ecdsapubkey)
+ disabled = true;
+
+ if(w) {
+ if(block || ecdsapubkey)
+ fputc('#', w);
+ if(fputs(buf, w) < 0) {
+ error = true;
+ break;
+ }
+ }
+
+ if(block && !strncmp(buf, "-----END ", 9))
+ block = false;
+ }
+
+ if(w)
+ if(fclose(w) < 0)
+ error = true;
+ if(ferror(r) || fclose(r) < 0)
+ error = true;
+
+ if(disabled) {
+ if(!w || error) {
+ fprintf(stderr, "Warning: old key(s) found, remove them by hand!\n");
+ if(w)
+ unlink(tmpfile);
+ return;
+ }
+
+#ifdef HAVE_MINGW
+ // We cannot atomically replace files on Windows.
+ char bakfile[PATH_MAX] = "";
+ snprintf(bakfile, sizeof bakfile, "%s.bak", filename);
+ if(rename(filename, bakfile) || rename(tmpfile, filename)) {
+ rename(bakfile, filename);
+#else
+ if(rename(tmpfile, filename)) {
+#endif
+ fprintf(stderr, "Warning: old key(s) found, remove them by hand!\n");
+ } else {
+#ifdef HAVE_MINGW
+ unlink(bakfile);
+#endif
+ fprintf(stderr, "Warning: old key(s) found and disabled.\n");
+ }
+ }
+
+ unlink(tmpfile);
+}
+
static FILE *ask_and_open(const char *filename, const char *what, const char *mode, bool ask) {
FILE *r;
char *directory;
umask(0077); /* Disallow everything for group and other */
+ disable_old_keys(filename, what);
+
/* Open it first to keep the inode busy */
r = fopen(filename, mode);
fchmod(fileno(f), 0600);
#endif
- if(ftell(f))
- fprintf(stderr, "Appending key to existing contents.\nMake sure only one key is stored in the file.\n");
-
ecdsa_write_pem_private_key(&key, f);
fclose(f);
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);
fchmod(fileno(f), 0600);
#endif
- if(ftell(f))
- fprintf(stderr, "Appending key to existing contents.\nMake sure only one key is stored in the file.\n");
-
rsa_write_pem_private_key(&key, f);
fclose(f);
if(!f)
return false;
- if(ftell(f))
- fprintf(stderr, "Appending key to existing contents.\nMake sure only one key is stored in the file.\n");
-
rsa_write_pem_public_key(&key, f);
fclose(f);
static int cmd_start(int argc, char *argv[]) {
- int i, j;
- char *c;
+ if(connect_tincd(false)) {
+ if(netname)
+ fprintf(stderr, "A tincd is already running for net `%s' with pid %d.\n", netname, pid);
+ else
+ fprintf(stderr, "A tincd is already running with pid %d.\n", pid);
+ return 0;
+ }
- argc += optind;
- argv -= optind;
- char *slash = strrchr(argv[0], '/');
+ char *c;
+ char *slash = strrchr(program_name, '/');
#ifdef HAVE_MINGW
- if ((c = strrchr(argv[0], '\\')) > slash)
+ if ((c = strrchr(program_name, '\\')) > slash)
slash = c;
#endif
if (slash++)
- xasprintf(&c, "%.*stincd", (int)(slash - argv[0]), argv[0]);
+ xasprintf(&c, "%.*stincd", (int)(slash - program_name), program_name);
else
c = "tincd";
- argv[0] = c;
+ int nargc = 0;
+ char **nargv = xmalloc_and_zero((orig_argc + argc) * sizeof *nargv);
- for(i = j = 1; argv[i]; ++i)
- if (i != optind && strcmp(argv[i], "--") != 0)
- argv[j++] = argv[i];
+ for(int i = 0; i < orig_argc; i++)
+ nargv[nargc++] = orig_argv[i];
+ for(int i = 1; i < argc; i++)
+ nargv[nargc++] = argv[i];
- argv[j] = NULL;
- execvp(c, argv);
- fprintf(stderr, "Could not start %s: %s\n", c, strerror(errno));
+#ifdef HAVE_MINGW
+ execvp(c, nargv);
+ fprintf(stderr, "Error starting %s: %s\n", c, strerror(errno));
return 1;
+#else
+ pid_t pid = fork();
+ if(pid == -1) {
+ fprintf(stderr, "Could not fork: %s\n", strerror(errno));
+ return 1;
+ }
+
+ if(!pid)
+ exit(execvp(c, nargv));
+
+ int status = -1;
+ if(waitpid(pid, &status, 0) != pid || !WIFEXITED(status) || WEXITSTATUS(status)) {
+ fprintf(stderr, "Error starting %s\n", c);
+ return 1;
+ }
+
+ return 0;
+#endif
}
static int cmd_stop(int argc, char *argv[]) {
if(!remove_service())
return 1;
#endif
+ close(fd);
+ pid = 0;
+ fd = -1;
+
return 0;
}
if(!connect_tincd(true))
return 1;
- bool do_graph = false;
+ int do_graph = 0;
if(!strcasecmp(argv[1], "nodes"))
sendline(fd, "%d %d", CONTROL, REQ_DUMP_NODES);
else if(!strcasecmp(argv[1], "graph")) {
sendline(fd, "%d %d", CONTROL, REQ_DUMP_NODES);
sendline(fd, "%d %d", CONTROL, REQ_DUMP_EDGES);
- do_graph = true;
+ do_graph = 1;
+ } else if(!strcasecmp(argv[1], "digraph")) {
+ sendline(fd, "%d %d", CONTROL, REQ_DUMP_NODES);
+ sendline(fd, "%d %d", CONTROL, REQ_DUMP_EDGES);
+ do_graph = 2;
} else {
fprintf(stderr, "Unknown dump type '%s'.\n", argv[1]);
usage(true);
return 1;
}
- if(do_graph)
+ if(do_graph == 1)
+ printf("graph {\n");
+ else if(do_graph == 2)
printf("digraph {\n");
while(recvline(fd, line, sizeof line)) {
char node1[4096], node2[4096];
- int n = sscanf(line, "%d %d %s to %s", &code, &req, node1, node2);
+ int n = sscanf(line, "%d %d %s %s", &code, &req, node1, node2);
if(n == 2) {
if(do_graph && req == REQ_DUMP_NODES)
continue;
if(n < 2)
break;
- if(!do_graph)
- printf("%s\n", line + 5);
- else {
+ if(!do_graph) {
+ char node[4096];
+ char from[4096];
+ char to[4096];
+ char subnet[4096];
+ char host[4096];
+ char port[4096];
+ char via[4096];
+ char nexthop[4096];
+ int cipher, digest, maclength, compression, distance, socket, weight;
+ short int pmtu, minmtu, maxmtu;
+ unsigned int options, status;
+ long int last_state_change;
+
+ switch(req) {
+ case REQ_DUMP_NODES: {
+ int n = sscanf(line, "%*d %*d %s %s port %s %d %d %d %d %x %x %s %s %d %hd %hd %hd %ld", node, host, port, &cipher, &digest, &maclength, &compression, &options, &status, nexthop, via, &distance, &pmtu, &minmtu, &maxmtu, &last_state_change);
+ if(n != 16) {
+ fprintf(stderr, "Unable to parse node dump from tincd: %s\n", line);
+ return 1;
+ }
+ printf("%s at %s port %s cipher %d digest %d maclength %d compression %d options %x status %04x nexthop %s via %s distance %d pmtu %hd (min %hd max %hd)\n",
+ node, host, port, cipher, digest, maclength, compression, options, status, nexthop, via, distance, pmtu, minmtu, maxmtu);
+ } break;
+
+ case REQ_DUMP_EDGES: {
+ int n = sscanf(line, "%*d %*d %s %s %s port %s %x %d", from, to, host, port, &options, &weight);
+ if(n != 6) {
+ fprintf(stderr, "Unable to parse edge dump from tincd.\n");
+ return 1;
+ }
+ printf("%s to %s at %s port %s options %x weight %d\n", from, to, host, port, options, weight);
+ } break;
+
+ case REQ_DUMP_SUBNETS: {
+ int n = sscanf(line, "%*d %*d %s %s", subnet, node);
+ if(n != 2) {
+ fprintf(stderr, "Unable to parse subnet dump from tincd.\n");
+ return 1;
+ }
+ printf("%s owner %s\n", strip_weight(subnet), node);
+ } break;
+
+ case REQ_DUMP_CONNECTIONS: {
+ int n = sscanf(line, "%*d %*d %s %s port %s %x %d %x", node, host, port, &options, &socket, &status);
+ if(n != 6) {
+ fprintf(stderr, "Unable to parse connection dump from tincd.\n");
+ return 1;
+ }
+ printf("%s at %s port %s options %x socket %d status %x\n", node, host, port, options, socket, status);
+ } break;
+
+ default:
+ fprintf(stderr, "Unable to parse dump from tincd.\n");
+ return 1;
+ }
+ } else {
if(req == REQ_DUMP_NODES)
printf(" %s [label = \"%s\"];\n", node1, node1);
- else
- printf(" %s -> %s;\n", node1, node2);
+ else {
+ if(do_graph == 1 && strcmp(node1, node2) > 0)
+ printf(" %s -- %s;\n", node1, node2);
+ else if(do_graph == 2)
+ printf(" %s -> %s;\n", node1, node2);
+ }
}
}
return 1;
}
- if(!check_id(argv[2])) {
+ if(!check_id(argv[1])) {
fprintf(stderr, "Invalid name for node.\n");
return 1;
}
return 1;
}
- if(!check_id(argv[2])) {
+ if(!check_id(argv[1])) {
fprintf(stderr, "Invalid name for node.\n");
return 1;
}
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;
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;
}
#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;
if(tty) {
free(copy);
free(line);
+ rl_basic_word_break_characters = "\t\n ";
line = readline(prompt);
if(line)
copy = xstrdup(line);
}
#else
if(tty)
- fputs(stdout, prompt);
+ fputs(prompt, stdout);
line = fgets(buf, sizeof buf, stdin);
#endif
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++) {
}
#ifdef HAVE_READLINE
- if(found)
+ if(tty && found)
add_history(copy);
#endif
int main(int argc, char *argv[]) {
program_name = argv[0];
+ orig_argv = argv;
+ orig_argc = argc;
if(!parse_options(argc, argv))
return 1;
projects / tinc / blobdiff