+bool read_config_file(avl_tree_t *config_tree, const char *fname) {
+ FILE *fp;
+ char buffer[MAX_STRING_SIZE];
+ char *line;
+ char *variable, *value, *eol;
+ int lineno = 0;
+ int len;
+ bool ignore = false;
+ config_t *cfg;
+ bool result = false;
+
+ fp = fopen(fname, "r");
+
+ if(!fp) {
+ logger(LOG_ERR, "Cannot open config file %s: %s", fname, strerror(errno));
+ return false;
+ }
+
+ for(;;) {
+ line = readline(fp, buffer, sizeof buffer);
+
+ if(!line) {
+ if(feof(fp))
+ result = true;
+ break;
+ }
+
+ lineno++;
+
+ if(!*line || *line == '#')
+ continue;
+
+ if(ignore) {
+ if(!strncmp(line, "-----END", 8))
+ ignore = false;
+ continue;
+ }
+
+ if(!strncmp(line, "-----BEGIN", 10)) {
+ ignore = true;
+ continue;
+ }
+
+ variable = value = line;
+
+ eol = line + strlen(line);
+ while(strchr("\t ", *--eol))
+ *eol = '\0';
+
+ len = strcspn(value, "\t =");
+ value += len;
+ value += strspn(value, "\t ");
+ if(*value == '=') {
+ value++;
+ value += strspn(value, "\t ");
+ }
+ variable[len] = '\0';
+
+
+ if(!*value) {
+ logger(LOG_ERR, "No value for variable `%s' on line %d while reading config file %s",
+ variable, lineno, fname);
+ break;
+ }
+
+ cfg = new_config();
+ cfg->variable = xstrdup(variable);
+ cfg->value = xstrdup(value);
+ cfg->file = xstrdup(fname);
+ cfg->line = lineno;
+
+ config_add(config_tree, cfg);
+ }
+
+ fclose(fp);
+
+ return result;
+}
+
+bool read_server_config() {
+ char *fname;
+ bool x;
+
+ xasprintf(&fname, "%s/tinc.conf", confbase);
+ x = read_config_file(config_tree, fname);
+
+ if(!x) { /* System error: complain */
+ logger(LOG_ERR, "Failed to read `%s': %s", fname, strerror(errno));
+ }
+
+ free(fname);
+
+ return x;
+}
+
+FILE *ask_and_open(const char *filename, const char *what) {
+ FILE *r;
+ char *directory;
+ char line[PATH_MAX];
+ const char *fn;
+
+ /* Check stdin and stdout */
+ if(!isatty(0) || !isatty(1)) {
+ /* Argh, they are running us from a script or something. Write
+ the files to the current directory and let them burn in hell
+ for ever. */
+ fn = filename;
+ } else {
+ /* Ask for a file and/or directory name. */
+ fprintf(stdout, "Please enter a file to save %s to [%s]: ",
+ what, filename);
+ fflush(stdout);
+
+ fn = readline(stdin, line, sizeof line);
+
+ if(!fn) {
+ fprintf(stderr, "Error while reading stdin: %s\n",
+ strerror(errno));
+ return NULL;
+ }
+
+ if(!strlen(fn))
+ /* User just pressed enter. */
+ fn = filename;
+ }