+ int action = 0;
+ 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;
+ }
+
+ // Should this go into our own host config file?
+ if(!node) {
+ for(int i = 0; hostvariables[i]; i++) {
+ if(!strcasecmp(hostvariables[i], variable)) {
+ node = get_my_name();
+ if(!node)
+ return 1;
+ break;
+ }
+ }
+ }
+
+ if(node && !check_id(node)) {
+ fprintf(stderr, "Invalid name for node.\n");
+ return 1;
+ }
+
+ // Open the right configuration file.
+ char *filename;
+ if(node)
+ xasprintf(&filename, "%s/%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));