conf.c -- configuration code
Copyright (C) 1998 Robert van der Meulen
1998-2005 Ivo Timmermans
- 2000-2010 Guus Sliepen <guus@tinc-vpn.org>
+ 2000-2012 Guus Sliepen <guus@tinc-vpn.org>
2010-2011 Julien Muchembled <jm@jmuchemb.eu>
2000 Cris van Pelt
#include "avl_tree.h"
#include "connection.h"
#include "conf.h"
+#include "list.h"
#include "logger.h"
#include "netutl.h" /* for str2address */
#include "protocol.h"
xasprintf(&fname, "%s/tinc.conf", confbase);
x = read_config_file(config_tree, fname);
+ // We will try to read the conf files in the "conf.d" dir
+ if (x) {
+ char * dname;
+ xasprintf(&dname, "%s/conf.d", confbase);
+ DIR *dir = opendir (dname);
+ // If we can find this dir
+ if (dir) {
+ struct dirent *ep;
+ // We list all the files in it
+ while (x && (ep = readdir (dir))) {
+ size_t l = strlen(ep->d_name);
+ // And we try to read the ones that end with ".conf"
+ if (l > 5 && !strcmp(".conf", & ep->d_name[ l - 5 ])) {
+ free(fname);
+ xasprintf(&fname, "%s/%s", dname, ep->d_name);
+ x = read_config_file(config_tree, fname);
+ }
+ }
+ closedir (dir);
+ }
+ free(dname);
+ }
+
if(!x) { /* System error: complain */
logger(LOG_ERR, "Failed to read `%s': %s", fname, strerror(errno));
}
return x;
}
+static void disable_old_keys(const char *filename) {
+ char tmpfile[PATH_MAX] = "";
+ char buf[1024];
+ bool disabled = 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(!strncmp(buf, "-----BEGIN RSA", 14)) {
+ buf[11] = 'O';
+ buf[12] = 'L';
+ buf[13] = 'D';
+ disabled = true;
+ }
+ else if(!strncmp(buf, "-----END RSA", 12)) {
+ buf[ 9] = 'O';
+ buf[10] = 'L';
+ buf[11] = 'D';
+ disabled = true;
+ }
+ if(w && fputs(buf, w) < 0) {
+ disabled = false;
+ break;
+ }
+ }
+
+ if(w)
+ fclose(w);
+ fclose(r);
+
+ if(!w && disabled) {
+ fprintf(stderr, "Warning: old key(s) found, remove them by hand!\n");
+ return;
+ }
+
+ if(disabled) {
+#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);
+}
+
FILE *ask_and_open(const char *filename, const char *what) {
FILE *r;
char *directory;
umask(0077); /* Disallow everything for group and other */
+ disable_old_keys(fn);
+
/* Open it first to keep the inode busy */
- r = fopen(fn, "r+") ?: fopen(fn, "w+");
+ r = fopen(fn, "a");
if(!r) {
fprintf(stderr, "Error opening file `%s': %s\n",
return r;
}
-bool disable_old_keys(FILE *f) {
- char buf[100];
- long pos;
- bool disabled = false;
-
- rewind(f);
- pos = ftell(f);
- if(pos < 0)
- return false;
-
- while(fgets(buf, sizeof buf, f)) {
- if(!strncmp(buf, "-----BEGIN RSA", 14)) {
- buf[11] = 'O';
- buf[12] = 'L';
- buf[13] = 'D';
- if(fseek(f, pos, SEEK_SET))
- break;
- if(fputs(buf, f) <= 0)
- break;
- disabled = true;
- }
- else if(!strncmp(buf, "-----END RSA", 12)) {
- buf[ 9] = 'O';
- buf[10] = 'L';
- buf[11] = 'D';
- if(fseek(f, pos, SEEK_SET))
- break;
- if(fputs(buf, f) <= 0)
- break;
- disabled = true;
- }
- pos = ftell(f);
- if(pos < 0)
- break;
- }
-
- return disabled;
-}