#define ROOMEVENT_RESPONSE_SIZE 1024\r
#define ROOMEVENT_URL "/_matrix/client/v3/rooms/%s/send/%s/%d"\r
\r
-#define TODEVICE_EVENT_SIZE 512\r
+#define TODEVICE_EVENT_SIZE (1024*5)\r
#define TODEVICE_URL "/_matrix/client/v3/sendToDevice/%s/%d"\r
\r
#define KEYS_QUERY_URL "/_matrix/client/v3/keys/query"\r
#define KEYS_QUERY_REQUEST_SIZE 256\r
-#define KEYS_QUERY_RESPONSE_SIZE 1024\r
+#define KEYS_QUERY_RESPONSE_SIZE (1024*10)\r
+\r
+#define KEYS_UPLOAD_URL "/_matrix/client/v3/keys/upload"\r
+#define KEYS_UPLOAD_REQUEST_SIZE 1024\r
+#define KEYS_UPLOAD_REQUEST_SIGNED_SIZE 2048\r
+#define KEYS_UPLOAD_RESPONSE_SIZE 2048\r
+\r
+#define KEYS_CLAIM_URL "/_matrix/client/v3/keys/claim"\r
+#define KEYS_CLAIM_REQUEST_SIZE 1024\r
+#define KEYS_CLAIM_RESPONSE_SIZE 1024\r
\r
#define JSON_QUERY_SIZE 128\r
\r
\r
\r
void\r
-Randomize(uint8_t * random, int randomLen)\r
+Randomize(\r
+ uint8_t * random,\r
+ int randomLen)\r
{\r
static bool first = false;\r
if (first) { srand(time(0)); first = false; }\r
\r
bool\r
JsonEscape(\r
- char * sIn, int sInLen,\r
+ const char * sIn, int sInLen,\r
char * sOut, int sOutCap)\r
{\r
int sOutIndex = 0;\r
return true;\r
}\r
\r
+bool JsonSign(\r
+ MatrixClient * client,\r
+ const char * sIn, int sInLen,\r
+ char * sOut, int sOutCap)\r
+{\r
+ static char signature[OLM_SIGNATURE_SIZE];\r
+ size_t res =\r
+ olm_account_sign(client->olmAccount.account,\r
+ sIn, sInLen,\r
+ signature, OLM_SIGNATURE_SIZE);\r
+ \r
+ int signatureLen = res;\r
+\r
+ static char signatureJson[JSON_SIGNATURE_SIZE];\r
+ int signatureJsonLen =\r
+ mjson_snprintf(signatureJson, JSON_SIGNATURE_SIZE,\r
+ "{"\r
+ "\"signatures\":{"\r
+ "\"%s\":{"\r
+ "\"ed25519:%s\":\"%.*s\""\r
+ "}"\r
+ "}"\r
+ "}",\r
+ client->userId,\r
+ client->deviceId,\r
+ signatureLen, signature);\r
+\r
+ struct mjson_fixedbuf result = { sOut, sOutCap, 0 };\r
+ mjson_merge(\r
+ sIn, sInLen,\r
+ signatureJson, signatureJsonLen,\r
+ mjson_print_fixed_buf,\r
+ &result);\r
+\r
+ return true;\r
+}\r
+\r
+\r
+bool\r
+MatrixOlmAccountInit(\r
+ MatrixOlmAccount * account)\r
+{\r
+ account->account = olm_account(account->memory);\r
+\r
+ static uint8_t random[OLM_ACCOUNT_RANDOM_SIZE];\r
+ Randomize(random, OLM_ACCOUNT_RANDOM_SIZE);\r
+\r
+ size_t res = olm_create_account(\r
+ account->account,\r
+ random,\r
+ OLM_ACCOUNT_RANDOM_SIZE);\r
+\r
+ return res != olm_error();\r
+}\r
+\r
// TODO: in/outbound sessions\r
bool\r
-MatrixOlmSessionInit(\r
+MatrixOlmSessionFrom(\r
MatrixOlmSession * session,\r
- const char * deviceId)\r
+ OlmAccount * olmAccount,\r
+ const char * deviceId,\r
+ const char * deviceKey,\r
+ const char * deviceOnetimeKey)\r
{\r
memset(session, 0, sizeof(MatrixOlmSession));\r
\r
- static uint8_t random[MEGOLM_INIT_RANDOM_SIZE];\r
- Randomize(random, MEGOLM_INIT_RANDOM_SIZE);\r
-\r
session->deviceId = deviceId;\r
\r
session->session =\r
olm_session(session->memory);\r
\r
+ static uint8_t random[OLM_OUTBOUND_SESSION_RANDOM_SIZE];\r
+ Randomize(random, OLM_OUTBOUND_SESSION_RANDOM_SIZE);\r
+\r
+ olm_create_outbound_session(session->session,\r
+ olmAccount,\r
+ deviceKey, strlen(deviceKey),\r
+ deviceOnetimeKey, strlen(deviceOnetimeKey),\r
+ random, OLM_OUTBOUND_SESSION_RANDOM_SIZE);\r
+\r
return session->session != NULL;\r
}\r
\r
\r
strcpy(client->server, server);\r
\r
+ // init olm account\r
+ MatrixOlmAccountInit(&client->olmAccount);\r
+\r
+ // set device key\r
+ static char deviceKeysJson[OLM_IDENTITY_KEYS_JSON_SIZE];\r
+ size_t res =\r
+ olm_account_identity_keys(\r
+ client->olmAccount.account,\r
+ deviceKeysJson,\r
+ OLM_IDENTITY_KEYS_JSON_SIZE);\r
+\r
+ mjson_get_string(deviceKeysJson, res,\r
+ "$.curve25519",\r
+ client->deviceKey, DEVICE_KEY_SIZE);\r
+ mjson_get_string(deviceKeysJson, res,\r
+ "$.ed25519",\r
+ client->signingKey, SIGNING_KEY_SIZE);\r
+\r
return true;\r
}\r
\r
{\r
int accessTokenLen = strlen(accessToken);\r
\r
- if (accessTokenLen < ACCESS_TOKEN_SIZE - 1)\r
+ if (accessTokenLen > ACCESS_TOKEN_SIZE - 1)\r
return false;\r
\r
for (int i = 0; i < accessTokenLen; i++)\r
return true;\r
}\r
\r
+bool\r
+MatrixClientSetDeviceId(\r
+ MatrixClient * client,\r
+ const char * deviceId)\r
+{\r
+ int deviceIdLen = strlen(deviceId);\r
+\r
+ if (deviceIdLen > DEVICE_ID_SIZE - 1)\r
+ return false;\r
+\r
+ for (int i = 0; i < deviceIdLen; i++)\r
+ client->deviceId[i] = deviceId[i];\r
+\r
+ return true;\r
+}\r
+\r
+bool\r
+MatrixClientSetUserId(\r
+ MatrixClient * client,\r
+ const char * userId)\r
+{\r
+ int userIdLen = strlen(userId);\r
+\r
+ if (userIdLen > USER_ID_SIZE - 1)\r
+ return false;\r
+\r
+ for (int i = 0; i < userIdLen; i++)\r
+ client->userId[i] = userId[i];\r
+\r
+ return true;\r
+}\r
+\r
+bool\r
+MatrixClientGenerateOnetimeKeys(\r
+ MatrixClient * client,\r
+ int numberOfKeys)\r
+{\r
+ static uint8_t random[OLM_ONETIME_KEYS_RANDOM_SIZE];\r
+ Randomize(random, OLM_ONETIME_KEYS_RANDOM_SIZE);\r
+\r
+ size_t res =\r
+ olm_account_generate_one_time_keys(client->olmAccount.account,\r
+ numberOfKeys, random, OLM_ONETIME_KEYS_RANDOM_SIZE);\r
+\r
+ return res != olm_error();\r
+}\r
+\r
+// https://spec.matrix.org/v1.7/client-server-api/#post_matrixclientv3keysupload\r
+bool\r
+MatrixClientUploadOnetimeKeys(\r
+ MatrixClient * client)\r
+{\r
+ static char requestBuffer[KEYS_UPLOAD_REQUEST_SIZE];\r
+\r
+ mjson_snprintf(requestBuffer, KEYS_UPLOAD_REQUEST_SIZE,\r
+ "{\"one_time_keys\":{");\r
+\r
+ static char onetimeKeysBuffer[1024];\r
+ olm_account_one_time_keys(client->olmAccount.account,\r
+ onetimeKeysBuffer, 1024);\r
+\r
+ const char *keys;\r
+ int keysLen;\r
+ mjson_find(onetimeKeysBuffer, strlen(onetimeKeysBuffer), "$.curve25519", &keys, &keysLen);\r
+\r
+ int koff, klen, voff, vlen, vtype, off = 0;\r
+ while ((off = mjson_next(keys, keysLen, off, &koff, &klen, &voff, &vlen, &vtype)) != 0) {\r
+ static char keyJson[JSON_ONETIME_KEY_SIZE];\r
+ \r
+ snprintf(keyJson, JSON_ONETIME_KEY_SIZE,\r
+ "{\"key\":\"%.*s\"}",\r
+ vlen-2, keys + voff+1);\r
+\r
+ static char keyJsonSigned[JSON_ONETIME_KEY_SIGNED_SIZE];\r
+\r
+ JsonSign(client,\r
+ keyJson, JSON_ONETIME_KEY_SIZE,\r
+ keyJsonSigned, JSON_ONETIME_KEY_SIGNED_SIZE);\r
+ \r
+ mjson_snprintf(requestBuffer+strlen(requestBuffer), KEYS_UPLOAD_REQUEST_SIZE-strlen(requestBuffer),\r
+ "\"signed_curve25519:%.*s\":%s,",\r
+ klen-2, keys + koff+1,\r
+ keyJsonSigned);\r
+ }\r
+\r
+ mjson_snprintf(requestBuffer+strlen(requestBuffer)-1, KEYS_UPLOAD_REQUEST_SIZE-strlen(requestBuffer),\r
+ "}}");\r
+\r
+ static char responseBuffer[KEYS_UPLOAD_RESPONSE_SIZE];\r
+ MatrixHttpPost(client,\r
+ KEYS_UPLOAD_URL,\r
+ requestBuffer,\r
+ responseBuffer, KEYS_UPLOAD_RESPONSE_SIZE,\r
+ true);\r
+\r
+ return true;\r
+}\r
+\r
+// https://spec.matrix.org/v1.7/client-server-api/#post_matrixclientv3keysupload\r
+bool\r
+MatrixClientUploadDeviceKeys(\r
+ MatrixClient * client)\r
+{\r
+ static char deviceKeysBuffer[KEYS_UPLOAD_REQUEST_SIZE];\r
+\r
+ mjson_snprintf(deviceKeysBuffer, KEYS_UPLOAD_REQUEST_SIZE,\r
+ "{\"device_keys\":{"\r
+ "\"algorithms\":[\"m.olm.v1.curve25519-aes-sha2\",\"m.megolm.v1.aes-sha2\"],"\r
+ "\"device_id\":\"%s\","\r
+ "\"keys\":{"\r
+ "\"curve25519:%s\":\"%s\","\r
+ "\"ed25519:%s\":\"%s\""\r
+ "},"\r
+ "\"user_id\":\"%s\""\r
+ "}}",\r
+ client->deviceId,\r
+ client->deviceId, client->deviceKey,\r
+ client->deviceId, client->signingKey,\r
+ client->userId);\r
+\r
+ static char deviceKeysSignedBuffer[KEYS_UPLOAD_REQUEST_SIGNED_SIZE];\r
+ JsonSign(client,\r
+ deviceKeysBuffer, KEYS_UPLOAD_REQUEST_SIZE,\r
+ deviceKeysSignedBuffer, KEYS_UPLOAD_REQUEST_SIZE);\r
+\r
+\r
+ static char responseBuffer[KEYS_UPLOAD_RESPONSE_SIZE];\r
+ MatrixHttpPost(client,\r
+ KEYS_UPLOAD_URL,\r
+ deviceKeysSignedBuffer,\r
+ responseBuffer, KEYS_UPLOAD_RESPONSE_SIZE,\r
+ true);\r
+\r
+ return true;\r
+}\r
+\r
+// https://spec.matrix.org/v1.7/client-server-api/#post_matrixclientv3keysclaim\r
+bool\r
+MatrixClientClaimOnetimeKey(\r
+ MatrixClient * client,\r
+ const char * userId,\r
+ const char * deviceId,\r
+ char * outOnetimeKey, int outOnetimeKeyCap)\r
+{\r
+ static char requestBuffer[KEYS_CLAIM_REQUEST_SIZE];\r
+ mjson_snprintf(requestBuffer, KEYS_CLAIM_REQUEST_SIZE,\r
+ "{"\r
+ "\"one_time_keys\": {"\r
+ "\"%s\": {"\r
+ "\"%s\": \"signed_curve25519\""\r
+ "}"\r
+ "},"\r
+ "\"timeout\": 10000"\r
+ "}",\r
+ userId,\r
+ deviceId);\r
+\r
+ static char responseBuffer[KEYS_CLAIM_RESPONSE_SIZE];\r
+ MatrixHttpPost(client,\r
+ KEYS_CLAIM_URL,\r
+ requestBuffer,\r
+ responseBuffer, KEYS_CLAIM_RESPONSE_SIZE,\r
+ true);\r
+ \r
+ char userIdEscaped[USER_ID_SIZE];\r
+ JsonEscape(userId, strlen(userId),\r
+ userIdEscaped, USER_ID_SIZE);\r
+ \r
+ static char query[JSON_QUERY_SIZE];\r
+ snprintf(query, JSON_QUERY_SIZE,\r
+ "$.one_time_keys.%s.%s",\r
+ userIdEscaped,\r
+ deviceId);\r
+ \r
+ const char * keyObject;\r
+ int keyObjectSize;\r
+ mjson_find(responseBuffer, strlen(responseBuffer),\r
+ query,\r
+ &keyObject, &keyObjectSize);\r
+ \r
+ int koff, klen, voff, vlen, vtype;\r
+ mjson_next(keyObject, keyObjectSize, 0,\r
+ &koff, &klen, &voff, &vlen, &vtype);\r
+ \r
+ mjson_get_string(keyObject + voff, vlen,\r
+ "$.key", outOnetimeKey, outOnetimeKeyCap);\r
+\r
+ printf("onetime key: %s\n", outOnetimeKey);\r
+ \r
+ // TODO: verify signature\r
+ \r
+ return true;\r
+}\r
+\r
// https://spec.matrix.org/v1.6/client-server-api/#post_matrixclientv3login\r
bool\r
MatrixClientLoginPassword(\r
"\"algorithm\":\"m.megolm.v1.aes-sha2\","\r
"\"sender_key\":\"%s\","\r
"\"ciphertext\":\"%s\","\r
- "\"session_id\":%s,"\r
+ "\"session_id\":\"%s\","\r
"\"device_id\":\"%s\""\r
"}",\r
senderKey,\r
bool\r
MatrixClientShareMegolmOutSession(\r
MatrixClient * client,\r
+ const char * userId,\r
const char * deviceId,\r
MatrixMegolmOutSession * session)\r
{\r
// generate room key event\r
- char eventBuffer[KEY_SHARE_EVENT_LEN];\r
+ static char eventBuffer[KEY_SHARE_EVENT_LEN];\r
sprintf(eventBuffer,\r
"{"\r
"\"algorithm\":\"m.megolm.v1.aes-sha2\","\r
\r
// get olm session\r
MatrixOlmSession * olmSession;\r
- MatrixClientGetOlmSession(client, deviceId, &olmSession);\r
+ MatrixClientGetOlmSession(client, userId, deviceId, &olmSession);\r
\r
// encrypt\r
char encryptedBuffer[KEY_SHARE_EVENT_LEN];\r
return true;\r
}\r
\r
+bool\r
+MatrixClientShareMegolmOutSessionTest(\r
+ MatrixClient * client,\r
+ const char * deviceId,\r
+ MatrixMegolmOutSession * session)\r
+{\r
+ // generate room key event\r
+ char eventBuffer[KEY_SHARE_EVENT_LEN];\r
+ sprintf(eventBuffer,\r
+ "{"\r
+ "\"algorithm\":\"m.megolm.v1.aes-sha2\","\r
+ "\"room_id\":\"%s\","\r
+ "\"session_id\":\"%s\","\r
+ "\"session_key\":\"%s\""\r
+ "}",\r
+ session->roomId,\r
+ session->id,\r
+ session->key\r
+ );\r
+\r
+ // send\r
+ MatrixClientSendToDevice(client,\r
+ client->userId,\r
+ deviceId,\r
+ eventBuffer,\r
+ "m.room_key");\r
+\r
+ return true;\r
+}\r
+\r
// bool\r
// MatrixClientSetMegolmOutSession(\r
// MatrixClient * client,\r
bool\r
MatrixClientGetOlmSession(\r
MatrixClient * client,\r
+ const char * userId,\r
const char * deviceId,\r
MatrixOlmSession ** outSession)\r
{\r
\r
if (client->numOlmSessions < NUM_OLM_SESSIONS)\r
{\r
- MatrixOlmSessionInit(\r
+ static char deviceKey[DEVICE_KEY_SIZE];\r
+ MatrixClientGetDeviceKey(client,\r
+ deviceId,\r
+ deviceKey, DEVICE_KEY_SIZE);\r
+\r
+ char onetimeKey[ONETIME_KEY_SIZE];\r
+ MatrixClientClaimOnetimeKey(client,\r
+ userId,\r
+ deviceId,\r
+ onetimeKey, ONETIME_KEY_SIZE);\r
+\r
+ MatrixOlmSessionFrom(\r
&client->olmSessions[client->numOlmSessions],\r
- deviceId);\r
+ client->olmAccount.account,\r
+ deviceId,\r
+ deviceKey,\r
+ onetimeKey);\r
\r
*outSession = &client->olmSessions[client->numOlmSessions];\r
\r
{\r
// get olm session\r
MatrixOlmSession * olmSession;\r
- MatrixClientGetOlmSession(client, deviceId, &olmSession);\r
+ MatrixClientGetOlmSession(client, userId, deviceId, &olmSession);\r
\r
// create event json\r
char deviceKey[DEVICE_KEY_SIZE];\r
MatrixClientRequestDeviceKeys(\r
MatrixClient * client)\r
{\r
- char userIdEscaped[USER_ID_SIZE];\r
+ static char userIdEscaped[USER_ID_SIZE];\r
JsonEscape(client->userId, strlen(client->userId),\r
userIdEscaped, USER_ID_SIZE);\r
\r
- char request[KEYS_QUERY_REQUEST_SIZE];\r
+ static char request[KEYS_QUERY_REQUEST_SIZE];\r
snprintf(request, KEYS_QUERY_REQUEST_SIZE,\r
- "{\"device_keys\":{\"%s\":[]}}", userIdEscaped);\r
+ "{\"device_keys\":{\"%s\":[]}}", client->userId);\r
\r
- char responseBuffer[KEYS_QUERY_RESPONSE_SIZE];\r
+ static char responseBuffer[KEYS_QUERY_RESPONSE_SIZE];\r
bool requestResult = MatrixHttpPost(client,\r
KEYS_QUERY_URL,\r
request,\r
responseBuffer, KEYS_QUERY_RESPONSE_SIZE,\r
true);\r
\r
- if (requestResult)\r
- {\r
- // query for retrieving device keys for user id\r
- char query[JSON_QUERY_SIZE];\r
- snprintf(query, JSON_QUERY_SIZE,\r
- "$.device_keys.%s", userIdEscaped);\r
- \r
- const char * s;\r
- int slen;\r
- mjson_find(responseBuffer, strlen(responseBuffer),\r
- query, &s, &slen);\r
+ if (! requestResult)\r
+ return false;\r
\r
- // loop over keys\r
- \r
- int koff, klen, voff, vlen, vtype, off;\r
- for (off = 0; (off = mjson_next(s, slen, off, &koff, &klen,\r
- &voff, &vlen, &vtype)) != 0; ) {\r
- const char * key = s + koff;\r
- const char * val = s + voff;\r
-\r
- // set device id, "key" is the JSON key\r
- MatrixDevice d;\r
- strncpy(d.deviceId, key, klen);\r
-\r
- // look for device key in value\r
- char deviceKeyQuery[JSON_QUERY_SIZE];\r
- snprintf(deviceKeyQuery, JSON_QUERY_SIZE,\r
- "$.keys.curve25519:%.*s", klen, key);\r
- mjson_get_string(val, vlen,\r
- deviceKeyQuery, d.deviceKey, DEVICE_KEY_SIZE);\r
-\r
- // add device\r
- if (client->numDevices < NUM_DEVICES)\r
- {\r
- client->devices[client->numDevices] = d;\r
- client->numDevices++;\r
- }\r
- else\r
- {\r
- return false;\r
- }\r
- }\r
+ // query for retrieving device keys for user id\r
+ static char query[JSON_QUERY_SIZE];\r
+ snprintf(query, JSON_QUERY_SIZE,\r
+ "$.device_keys.%s", userIdEscaped);\r
+ \r
+ const char * s;\r
+ int slen;\r
+ mjson_find(responseBuffer, strlen(responseBuffer),\r
+ query, &s, &slen);\r
\r
- return true;\r
- }\r
- else\r
- {\r
- return false;\r
+ // loop over keys\r
+ \r
+ int koff, klen, voff, vlen, vtype, off = 0;\r
+ for (off = 0; (off = mjson_next(s, slen, off, &koff, &klen,\r
+ &voff, &vlen, &vtype)) != 0; ) {\r
+ const char * key = s + koff;\r
+ const char * val = s + voff;\r
+\r
+ // set device id, "key" is the JSON key\r
+ MatrixDevice d;\r
+ snprintf(d.deviceId, DEVICE_ID_SIZE,\r
+ "%.*s", klen-2, key+1);\r
+\r
+ // look for device key in value\r
+ static char deviceKeyQuery[JSON_QUERY_SIZE];\r
+ snprintf(deviceKeyQuery, JSON_QUERY_SIZE,\r
+ "$.keys.curve25519:%s", d.deviceId);\r
+ mjson_get_string(val, vlen,\r
+ deviceKeyQuery, d.deviceKey, DEVICE_KEY_SIZE);\r
+\r
+ // add device\r
+ if (client->numDevices < NUM_DEVICES)\r
+ {\r
+ client->devices[client->numDevices] = d;\r
+ client->numDevices++;\r
+ }\r
+ else\r
+ {\r
+ return false;\r
+ }\r
}\r
+\r
+ return true;\r
}\r
projects / matrix_esp_thesis / blobdiff