swanctl: Cache entered PKCS#12 decryption secret
It is usually used more than once, but most likely the same for decryption and MAC verification.
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54cdf847cc
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1e366429fd
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@ -179,14 +179,23 @@ static bool load_key_anytype(vici_conn_t *conn, command_format_options_t format,
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return loaded;
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}
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/**
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* Data passed to password callback
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*/
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typedef struct {
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char prompt[128];
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mem_cred_t *cache;
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} cb_data_t;
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/**
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* Callback function to prompt for private key passwords
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*/
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CALLBACK(password_cb, shared_key_t*,
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char *prompt, shared_key_type_t type,
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cb_data_t *data, shared_key_type_t type,
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identification_t *me, identification_t *other,
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id_match_t *match_me, id_match_t *match_other)
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{
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shared_key_t *shared;
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char *pwd = NULL;
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if (type != SHARED_PRIVATE_KEY_PASS)
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@ -194,7 +203,7 @@ CALLBACK(password_cb, shared_key_t*,
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return NULL;
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}
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#ifdef HAVE_GETPASS
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pwd = getpass(prompt);
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pwd = getpass(data->prompt);
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#endif
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if (!pwd || strlen(pwd) == 0)
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{
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@ -208,7 +217,10 @@ CALLBACK(password_cb, shared_key_t*,
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{
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*match_other = ID_MATCH_PERFECT;
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}
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return shared_key_create(type, chunk_clone(chunk_from_str(pwd)));
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shared = shared_key_create(type, chunk_clone(chunk_from_str(pwd)));
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/* cache secret if it is required more than once (PKCS#12) */
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data->cache->add_shared(data->cache, shared, NULL);
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return shared->get_ref(shared);
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}
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/**
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@ -250,21 +262,26 @@ static void* decrypt(char *name, char *type, chunk_t encoding)
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int subtype;
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void *cred;
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callback_cred_t *cb;
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char buf[128];
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cb_data_t data;
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if (!determine_credtype(type, &credtype, &subtype))
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{
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return NULL;
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}
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snprintf(buf, sizeof(buf), "Password for %s file '%s': ", type, name);
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snprintf(data.prompt, sizeof(data.prompt), "Password for %s file '%s': ",
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type, name);
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cb = callback_cred_create_shared(password_cb, buf);
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data.cache = mem_cred_create();
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lib->credmgr->add_set(lib->credmgr, &data.cache->set);
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cb = callback_cred_create_shared(password_cb, &data);
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lib->credmgr->add_set(lib->credmgr, &cb->set);
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cred = lib->creds->create(lib->creds, credtype, subtype,
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BUILD_BLOB_PEM, encoding, BUILD_END);
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lib->credmgr->remove_set(lib->credmgr, &data.cache->set);
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data.cache->destroy(data.cache);
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lib->credmgr->remove_set(lib->credmgr, &cb->set);
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cb->destroy(cb);
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