"tincctl init" creates initial directory structure, tinc.conf and keypairs.

[tinc] / src / tincctl.c

diff --git a/src/tincctl.c b/src/tincctl.c
index 63b7589..0337129 100644 (file)
--- a/src/tincctl.c
+++ b/src/tincctl.c
@@ -73,6 +73,7 @@ static void usage(bool status) {
                                "      --version           Output version information and exit.\n"
                                "\n"
                                "Valid commands are:\n"
+                               "  init [name]                Create initial configuration files.\n"
                                "  start                      Start tincd.\n"
                                "  stop                       Stop tincd.\n"
                                "  restart                    Restart tincd.\n"
@@ -616,6 +617,83 @@ int main(int argc, char *argv[]) {
                return 1;
        }
 
+       if(!strcasecmp(argv[optind], "init")) {
+               char *filename = NULL;
+               xasprintf(&filename, "%s/tinc.conf", confbase);
+               if(!access(confbase, F_OK)) {
+                       fprintf(stderr, "Configuration file %s already exists!\n", filename);
+                       return 1;
+               }
+
+               if(optind >= argc - 1) {
+                       if(isatty(0) && isatty(1)) {
+                               char buf[1024];
+                               fprintf(stdout, "Enter the Name you want your tinc node to have: ");
+                               fflush(stdout);
+                               if(!fgets(buf, sizeof buf, stdin)) {
+                                       fprintf(stderr, "Error while reading stdin: %s\n", strerror(errno));
+                                       return 1;
+                               }
+                               int len = strlen(buf);
+                               if(len)
+                                       buf[--len] = 0;
+                               if(!len) {
+                                       fprintf(stderr, "No name given!\n");
+                                       return 1;
+                               }
+                               name = strdup(buf);
+                       } else {
+                               fprintf(stderr, "No Name given!\n");
+                               return 1;
+                       }
+               } else {
+                       name = strdup(argv[optind + 1]);
+                       if(!*name) {
+                               fprintf(stderr, "No Name given!\n");
+                               return 1;
+                       }
+               }
+
+               for(int i = 0; i < strlen(name); i++) {
+                       if(!isalnum(name[i]) && name[i] != '_') {
+                               fprintf(stderr, "Invalid Name! Only a-z, A-Z, 0-9 and _ are allowed characters.\n");
+                               return 1;
+                       }
+               }
+
+               if(mkdir(CONFDIR, 0755) && errno != EEXIST) {
+                       fprintf(stderr, "Could not create directory %s: %s\n", CONFDIR, strerror(errno));
+                       return 1;
+               }
+
+               if(mkdir(confbase, 0755) && errno != EEXIST) {
+                       fprintf(stderr, "Could not create directory %s: %s\n", confbase, strerror(errno));
+                       return 1;
+               }
+
+               char *filename2 = NULL;
+               xasprintf(&filename2, "%s/hosts", confbase);
+               if(mkdir(filename2, 0755) && errno != EEXIST) {
+                       fprintf(stderr, "Could not create directory %s: %s\n", filename, strerror(errno));
+                       return 1;
+               }
+
+               FILE *f = fopen(filename, "w");
+               if(!f) {
+                       fprintf(stderr, "Could not create file %s: %s\n", filename, strerror(errno));
+                       return 1;
+               }
+
+               fprintf(f, "Name = %s\n", name);
+               fclose(f);
+
+               fclose(stdin);
+               if(!rsa_keygen(2048) || !ecdsa_keygen())
+                       return false;
+
+               return true;
+       }
+
        /*
         * Now handle commands that do involve connecting to a running tinc daemon.
         * Authenticate the server by ensuring the parent directory can be