#include <getopt.h>
-#include "protocol.h"
#include "xalloc.h"
+#include "protocol.h"
+#include "control_common.h"
/* The name this program was run with. */
char *program_name = NULL;
" stop Stop tincd.\n"
" restart Restart tincd.\n"
" reload Reload configuration of running tincd.\n"
+ " pid Show PID of currently running tincd.\n"
" generate-keys [bits] Generate a new public/private keypair.\n"
" dump Dump a list of one of the following things:\n"
" nodes - all known nodes 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"
+ " purge Purge unreachable nodes\n"
"\n"));
printf(_("Report bugs to tinc@tinc-vpn.org.\n"));
}
}
}
-int main(int argc, char **argv) {
- int fd;
+static int fullread(int fd, void *data, size_t datalen) {
+ int rv, len = 0;
+
+ while (len < datalen) {
+ rv = read(fd, data + len, datalen - len);
+ if(rv == -1 && errno == EINTR)
+ continue;
+ else if (rv == -1)
+ return rv;
+ else if (rv == 0) {
+ errno = ENODATA;
+ return -1;
+ }
+ len += rv;
+ }
+ 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(fullread(fd, indata, req.length - sizeof req) == -1) {
+ free(indata);
+ return -1;
+ }
+
+ *indata_p = indata;
+ if(indatalen_p != NULL)
+ *indatalen_p = req.length - sizeof req;
+ }
+
+ *res_errno_p = req.res_errno;
+
+ return 0;
+}
+
+/*
+ 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;
+
+ if(send_ctl_request(fd, type, outdata, outdatalen, &res_errno,
+ (void**) &buf, &buflen)) {
+ fprintf(stderr, _("Error sending request: %s\n"), strerror(errno));
+ return -1;
+ }
+
+ if(buf != NULL) {
+ printf("%*s", buflen, buf);
+ free(buf);
+ }
+
+ if(res_errno != 0) {
+ fprintf(stderr, _("Server reported error: %s\n"), strerror(res_errno));
+ return -1;
+ }
+
+ return 0;
+}
+
+int main(int argc, char *argv[], char *envp[]) {
struct sockaddr_un addr;
+ int fd;
+ int len;
+ tinc_ctl_greeting_t greeting;
+ tinc_ctl_request_t req;
+
program_name = argv[0];
setlocale(LC_ALL, "");
return 1;
}
+ // 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);
}
+ if(!strcasecmp(argv[optind], "start")) {
+ argv[optind] = NULL;
+ execve("tincd", argv, envp);
+ fprintf(stderr, _("Could not start tincd: %s"), strerror(errno));
+ return 1;
+ }
+
+ // Now handle commands that do involve connecting to a running tinc daemon.
+
if(strlen(controlsocketname) >= sizeof addr.sun_path) {
fprintf(stderr, _("Control socket filename too long!\n"));
return 1;
return 1;
}
- printf("Connected to %s.\n", controlsocketname);
+ if(fullread(fd, &greeting, sizeof greeting) == -1) {
+ fprintf(stderr, _("Cannot read greeting from control socket: %s\n"),
+ strerror(errno));
+ return 1;
+ }
+
+ if(greeting.version != TINC_CTL_VERSION_CURRENT) {
+ fprintf(stderr, _("Version mismatch: server %d, client %d\n"),
+ greeting.version, TINC_CTL_VERSION_CURRENT);
+ return 1;
+ }
+
+ struct ucred cred;
+ socklen_t credlen = sizeof cred;
+
+ if(getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &cred, &credlen) < 0) {
+ fprintf(stderr, _("Could not obtain PID: %s\n"), strerror(errno));
+ return 1;
+ }
+
+ if(!strcasecmp(argv[optind], "pid")) {
+ printf("%d\n", cred.pid);
+ return 0;
+ }
+
+ if(!strcasecmp(argv[optind], "stop")) {
+ return send_ctl_request_cooked(fd, REQ_STOP, NULL, 0) != -1;
+ }
+
+ 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;
+ }
+ if(!strcasecmp(argv[optind], "dump")) {
+ if (argc < optind + 2) {
+ 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;
+ }
+
+ if(!strcasecmp(argv[optind+1], "connections")) {
+ return send_ctl_request_cooked(fd, REQ_DUMP_CONNECTIONS, NULL, 0) != -1;
+ }
+
+ if(!strcasecmp(argv[optind+1], "graph")) {
+ return send_ctl_request_cooked(fd, REQ_DUMP_GRAPH, NULL, 0) != -1;
+ }
+
+ fprintf(stderr, _("Unknown dump type '%s'.\n"), argv[optind+1]);
+ usage(true);
+ return 1;
+ }
+
+ if(!strcasecmp(argv[optind], "purge")) {
+ return send_ctl_request_cooked(fd, REQ_PURGE, NULL, 0) != -1;
+ }
+
+ fprintf(stderr, _("Unknown command `%s'.\n"), argv[optind]);
+ usage(true);
+
close(fd);
return 0;
projects / tinc / blobdiff