*/
#include "libmeshlink.h"
+#include "crypto.h"
+#include "ecdsagen.h"
+char *hosts_dir = NULL;
+static char *name = NULL;
+
+/*
+ Generate a public/private ECDSA keypair, and ask for a file to store
+ them in.
+*/
+bool ecdsa_keygen(bool ask) {
+ ecdsa_t *key;
+ FILE *f;
+ char *pubname, *privname;
+
+ fprintf(stderr, "Generating ECDSA keypair:\n");
+
+ if(!(key = ecdsa_generate())) {
+ fprintf(stderr, "Error during key generation!\n");
+ return false;
+ } else
+ fprintf(stderr, "Done.\n");
+
+ xasprintf(&privname, "%s" SLASH "ecdsa_key.priv", confbase);
+ //f = ask_and_open(privname, "private ECDSA key", "a", ask, 0600); //this function is not ported to lib because makes no sense
+ free(privname);
+
+ if(!f)
+ return false;
+
+ if(!ecdsa_write_pem_private_key(key, f)) {
+ fprintf(stderr, "Error writing private key!\n");
+ ecdsa_free(key);
+ fclose(f);
+ return false;
+ }
+
+ fclose(f);
+
+ if(name)
+ xasprintf(&pubname, "%s" SLASH "hosts" SLASH "%s", confbase, name);
+ else
+ xasprintf(&pubname, "%s" SLASH "ecdsa_key.pub", confbase);
+
+ //f = ask_and_open(pubname, "public ECDSA key", "a", ask, 0666);
+ free(pubname);
+
+ if(!f)
+ return false;
+
+ char *pubkey = ecdsa_get_base64_public_key(key);
+ fprintf(f, "ECDSAPublicKey = %s\n", pubkey);
+ free(pubkey);
+
+ fclose(f);
+ ecdsa_free(key);
+
+ return true;
+}
+
+/*
+ Generate a public/private RSA keypair, and ask for a file to store
+ them in.
+*/
+bool rsa_keygen(int bits, bool ask) {
+ rsa_t *key;
+ FILE *f;
+ char *pubname, *privname;
+
+ fprintf(stderr, "Generating %d bits keys:\n", bits);
+
+ if(!(key = rsa_generate(bits, 0x10001))) {
+ fprintf(stderr, "Error during key generation!\n");
+ return false;
+ } else
+ fprintf(stderr, "Done.\n");
+
+ xasprintf(&privname, "%s" SLASH "rsa_key.priv", confbase);
+ //f = ask_and_open(privname, "private RSA key", "a", ask, 0600);
+ free(privname);
+
+ if(!f)
+ return false;
+
+ if(!rsa_write_pem_private_key(key, f)) {
+ fprintf(stderr, "Error writing private key!\n");
+ fclose(f);
+ rsa_free(key);
+ return false;
+ }
+
+ fclose(f);
+
+ if(name)
+ xasprintf(&pubname, "%s" SLASH "hosts" SLASH "%s", confbase, name);
+ else
+ xasprintf(&pubname, "%s" SLASH "rsa_key.pub", confbase);
+
+ //f = ask_and_open(pubname, "public RSA key", "a", ask, 0666);
+ free(pubname);
+
+ if(!f)
+ return false;
+
+ if(!rsa_write_pem_public_key(key, f)) {
+ fprintf(stderr, "Error writing public key!\n");
+ fclose(f);
+ rsa_free(key);
+ return false;
+ }
+
+ fclose(f);
+ rsa_free(key);
+
+ return true;
+}
+
+static bool try_bind(int port) {
+ struct addrinfo *ai = NULL;
+ struct addrinfo hint = {
+ .ai_flags = AI_PASSIVE,
+ .ai_family = AF_UNSPEC,
+ .ai_socktype = SOCK_STREAM,
+ .ai_protocol = IPPROTO_TCP,
+ };
+
+ char portstr[16];
+ snprintf(portstr, sizeof portstr, "%d", port);
+
+ if(getaddrinfo(NULL, portstr, &hint, &ai) || !ai)
+ return false;
+
+ while(ai) {
+ int fd = socket(ai->ai_family, SOCK_STREAM, IPPROTO_TCP);
+ if(!fd)
+ return false;
+ int result = bind(fd, ai->ai_addr, ai->ai_addrlen);
+ closesocket(fd);
+ if(result)
+ return false;
+ ai = ai->ai_next;
+ }
+
+ return true;
+}
+
+int check_port(char *name) {
+ if(try_bind(655))
+ return 655;
+
+ fprintf(stderr, "Warning: could not bind to port 655. ");
+
+ for(int i = 0; i < 100; i++) {
+ int port = 0x1000 + (rand() & 0x7fff);
+ if(try_bind(port)) {
+ char *filename;
+ xasprintf(&filename, "%s" SLASH "hosts" SLASH "%s", confbase, name);
+ FILE *f = fopen(filename, "a");
+ free(filename);
+ if(!f) {
+ fprintf(stderr, "Please change tinc's Port manually.\n");
+ return 0;
+ }
+
+ fprintf(f, "Port = %d\n", port);
+ fclose(f);
+ fprintf(stderr, "Tinc will instead listen on port %d.\n", port);
+ return port;
+ }
+ }
+
+ fprintf(stderr, "Please change tinc's Port manually.\n");
+ return 0;
+}
//tinc_setup() should basically do what cmd_init() from src/tincctl.c does, except it doesn't have to generate a tinc-up script.
bool tinc_setup(const char* tinc_conf, const char* name) {
if(!access(tinc_conf, F_OK)) {
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