int
serval_init_keyring(svl_crypto_ctx *ctx)
{
keyring_identity *new_ident;
CHECK_ERR(ctx,"Invalid ctx");
CHECK_ERR(serval_open_keyring(ctx), "Failed to open keyring");
if (!ctx->sid[0]) { //create new sid
// cycle through the keyring contexts until we find one with room for another identity
for(int c = 0; c < (ctx->keyring_file)->context_count; c++) {
// create new Serval identity
new_ident = keyring_create_identity(ctx->keyring_file,
(ctx->keyring_file)->contexts[c],
KEYRING_PIN);
if (new_ident)
break;
}
CHECK_ERR(new_ident, "Failed to create new SID");
// need to commit keyring or else new identity won't be saved (needs permissions)
CHECK_ERR(keyring_commit(ctx->keyring_file) == 0, "Failed to save new SID into keyring");
memcpy(ctx->sid,new_ident->subscriber->sid,SID_SIZE);
}
CHECK(serval_extract_sas(ctx), "Failed to fetch SAS keys");
return 1;
error:
return 0;
}
int serval_init_keyring(unsigned char *sid,
const size_t sid_len,
const char *keyring_path,
const size_t keyring_len,
keyring_file **_keyring,
unsigned char **key,
int *key_len) {
keyring_identity *new_ident;
unsigned char *_sid = sid;
if (sid) CHECK(sid_len == SID_SIZE,"Invalid SID");
CHECK_ERR(serval_open_keyring(keyring_path,keyring_len,_keyring),"Failed to open keyring");
if (!sid) {
//create new sid
int c;
for(c = 0; c < (*_keyring)->context_count; c++) { // cycle through the keyring contexts until we find one with room for another identity
new_ident = keyring_create_identity(*_keyring,(*_keyring)->contexts[c], KEYRING_PIN); // create new Serval identity
if (new_ident)
break;
}
CHECK_ERR(new_ident,"failed to create new SID");
CHECK_ERR(keyring_commit(*_keyring) == 0,"Failed to save new SID into keyring"); // need to commit keyring or else new identity won't be saved (needs permissions)
_sid = new_ident->subscriber->sid;
}
if (key)
CHECK(serval_extract_sas(key,key_len, *_keyring, _sid),"Failed to fetch SAS key");
return 1;
error:
return 0;
}
