Allow using key & configuration parser from tincd in tinc.
[tinc] / src / net_setup.c
index f1a70f3..f253ccd 100644 (file)
@@ -23,6 +23,7 @@
 #include "system.h"
 
 #include "cipher.h"
+#include "conf_net.h"
 #include "conf.h"
 #include "connection.h"
 #include "control.h"
@@ -42,6 +43,7 @@
 #include "subnet.h"
 #include "utils.h"
 #include "xalloc.h"
+#include "keys.h"
 
 #ifdef HAVE_MINIUPNPC
 #include "upnp.h"
@@ -109,146 +111,6 @@ exit:
        return n->ecdsa;
 }
 
-bool read_ecdsa_public_key(connection_t *c) {
-       if(ecdsa_active(c->ecdsa)) {
-               return true;
-       }
-
-       FILE *fp;
-       char *fname;
-       char *p;
-
-       if(!c->config_tree) {
-               init_configuration(&c->config_tree);
-
-               if(!read_host_config(c->config_tree, c->name, true)) {
-                       return false;
-               }
-       }
-
-       /* First, check for simple Ed25519PublicKey statement */
-
-       if(get_config_string(lookup_config(c->config_tree, "Ed25519PublicKey"), &p)) {
-               c->ecdsa = ecdsa_set_base64_public_key(p);
-               free(p);
-               return c->ecdsa;
-       }
-
-       /* Else, check for Ed25519PublicKeyFile statement and read it */
-
-       if(!get_config_string(lookup_config(c->config_tree, "Ed25519PublicKeyFile"), &fname)) {
-               xasprintf(&fname, "%s" SLASH "hosts" SLASH "%s", confbase, c->name);
-       }
-
-       fp = fopen(fname, "r");
-
-       if(!fp) {
-               logger(DEBUG_ALWAYS, LOG_ERR, "Error reading Ed25519 public key file `%s': %s",
-                      fname, strerror(errno));
-               free(fname);
-               return false;
-       }
-
-       c->ecdsa = ecdsa_read_pem_public_key(fp);
-
-       if(!c->ecdsa && errno != ENOENT) {
-               logger(DEBUG_ALWAYS, LOG_ERR, "Parsing Ed25519 public key file `%s' failed.", fname);
-       }
-
-       fclose(fp);
-       free(fname);
-       return c->ecdsa;
-}
-
-#ifndef DISABLE_LEGACY
-bool read_rsa_public_key(connection_t *c) {
-       FILE *fp;
-       char *fname;
-       char *n;
-
-       /* First, check for simple PublicKey statement */
-
-       if(get_config_string(lookup_config(c->config_tree, "PublicKey"), &n)) {
-               c->rsa = rsa_set_hex_public_key(n, "FFFF");
-               free(n);
-               return c->rsa;
-       }
-
-       /* Else, check for PublicKeyFile statement and read it */
-
-       if(!get_config_string(lookup_config(c->config_tree, "PublicKeyFile"), &fname)) {
-               xasprintf(&fname, "%s" SLASH "hosts" SLASH "%s", confbase, c->name);
-       }
-
-       fp = fopen(fname, "r");
-
-       if(!fp) {
-               logger(DEBUG_ALWAYS, LOG_ERR, "Error reading RSA public key file `%s': %s", fname, strerror(errno));
-               free(fname);
-               return false;
-       }
-
-       c->rsa = rsa_read_pem_public_key(fp);
-       fclose(fp);
-
-       if(!c->rsa) {
-               logger(DEBUG_ALWAYS, LOG_ERR, "Reading RSA public key file `%s' failed: %s", fname, strerror(errno));
-       }
-
-       free(fname);
-       return c->rsa;
-}
-#endif
-
-static bool read_ecdsa_private_key(void) {
-       FILE *fp;
-       char *fname;
-
-       /* Check for PrivateKeyFile statement and read it */
-
-       if(!get_config_string(lookup_config(config_tree, "Ed25519PrivateKeyFile"), &fname)) {
-               xasprintf(&fname, "%s" SLASH "ed25519_key.priv", confbase);
-       }
-
-       fp = fopen(fname, "r");
-
-       if(!fp) {
-               logger(DEBUG_ALWAYS, LOG_ERR, "Error reading Ed25519 private key file `%s': %s", fname, strerror(errno));
-
-               if(errno == ENOENT) {
-                       logger(DEBUG_ALWAYS, LOG_INFO, "Create an Ed25519 key pair with `tinc -n %s generate-ed25519-keys'.", netname ? netname : ".");
-               }
-
-               free(fname);
-               return false;
-       }
-
-#ifndef HAVE_MINGW
-       struct stat s;
-
-       if(fstat(fileno(fp), &s)) {
-               logger(DEBUG_ALWAYS, LOG_ERR, "Could not stat Ed25519 private key file `%s': %s'", fname, strerror(errno));
-               free(fname);
-               return false;
-       }
-
-       if(s.st_mode & ~0100700u) {
-               logger(DEBUG_ALWAYS, LOG_WARNING, "Warning: insecure file permissions for Ed25519 private key file `%s'!", fname);
-       }
-
-#endif
-
-       myself->connection->ecdsa = ecdsa_read_pem_private_key(fp);
-       fclose(fp);
-
-       if(!myself->connection->ecdsa) {
-               logger(DEBUG_ALWAYS, LOG_ERR, "Reading Ed25519 private key file `%s' failed", fname);
-       }
-
-       free(fname);
-       return myself->connection->ecdsa;
-}
-
 static bool read_invitation_key(void) {
        FILE *fp;
        char fname[PATH_MAX];
@@ -274,74 +136,6 @@ static bool read_invitation_key(void) {
        return invitation_key;
 }
 
-#ifndef DISABLE_LEGACY
-static bool read_rsa_private_key(void) {
-       FILE *fp;
-       char *fname;
-       char *n, *d;
-
-       /* First, check for simple PrivateKey statement */
-
-       if(get_config_string(lookup_config(config_tree, "PrivateKey"), &d)) {
-               if(!get_config_string(lookup_config(config_tree, "PublicKey"), &n)) {
-                       logger(DEBUG_ALWAYS, LOG_ERR, "PrivateKey used but no PublicKey found!");
-                       free(d);
-                       return false;
-               }
-
-               myself->connection->rsa = rsa_set_hex_private_key(n, "FFFF", d);
-               free(n);
-               free(d);
-               return myself->connection->rsa;
-       }
-
-       /* Else, check for PrivateKeyFile statement and read it */
-
-       if(!get_config_string(lookup_config(config_tree, "PrivateKeyFile"), &fname)) {
-               xasprintf(&fname, "%s" SLASH "rsa_key.priv", confbase);
-       }
-
-       fp = fopen(fname, "r");
-
-       if(!fp) {
-               logger(DEBUG_ALWAYS, LOG_ERR, "Error reading RSA private key file `%s': %s",
-                      fname, strerror(errno));
-
-               if(errno == ENOENT) {
-                       logger(DEBUG_ALWAYS, LOG_INFO, "Create an RSA key pair with `tinc -n %s generate-rsa-keys'.", netname ? netname : ".");
-               }
-
-               free(fname);
-               return false;
-       }
-
-#ifndef HAVE_MINGW
-       struct stat s;
-
-       if(fstat(fileno(fp), &s)) {
-               logger(DEBUG_ALWAYS, LOG_ERR, "Could not stat RSA private key file `%s': %s'", fname, strerror(errno));
-               free(fname);
-               return false;
-       }
-
-       if(s.st_mode & ~0100700u) {
-               logger(DEBUG_ALWAYS, LOG_WARNING, "Warning: insecure file permissions for RSA private key file `%s'!", fname);
-       }
-
-#endif
-
-       myself->connection->rsa = rsa_read_pem_private_key(fp);
-       fclose(fp);
-
-       if(!myself->connection->rsa) {
-               logger(DEBUG_ALWAYS, LOG_ERR, "Reading RSA private key file `%s' failed: %s", fname, strerror(errno));
-       }
-
-       free(fname);
-       return myself->connection->rsa;
-}
-#endif
-
 #ifndef DISABLE_LEGACY
 static timeout_t keyexpire_timeout;
 
@@ -890,7 +684,8 @@ static bool setup_myself(void) {
        myself->options |= PROT_MINOR << 24;
 
 #ifdef DISABLE_LEGACY
-       experimental = read_ecdsa_private_key();
+       myself->connection->ecdsa = read_ecdsa_private_key(config_tree, NULL);
+       experimental = myself->connection->ecdsa != NULL;
 
        if(!experimental) {
                logger(DEBUG_ALWAYS, LOG_ERR, "No private key available, cannot start tinc!");
@@ -900,18 +695,25 @@ static bool setup_myself(void) {
 #else
 
        if(!get_config_bool(lookup_config(config_tree, "ExperimentalProtocol"), &experimental)) {
-               experimental = read_ecdsa_private_key();
+               myself->connection->ecdsa = read_ecdsa_private_key(config_tree, NULL);
+               experimental = myself->connection->ecdsa != NULL;
 
                if(!experimental) {
                        logger(DEBUG_ALWAYS, LOG_WARNING, "Support for SPTPS disabled.");
                }
        } else {
-               if(experimental && !read_ecdsa_private_key()) {
-                       return false;
+               if(experimental) {
+                       myself->connection->ecdsa = read_ecdsa_private_key(config_tree, NULL);
+
+                       if(!myself->connection->ecdsa) {
+                               return false;
+                       }
                }
        }
 
-       if(!read_rsa_private_key()) {
+       myself->connection->rsa = read_rsa_private_key(config_tree, NULL);
+
+       if(!myself->connection->rsa) {
                if(experimental) {
                        logger(DEBUG_ALWAYS, LOG_WARNING, "Support for legacy protocol disabled.");
                } else {