#include "matrix.h"\r
\r
+#include <time.h>\r
#include <stdio.h>\r
#include <mjson.h>\r
+#include <olm/sas.h>\r
\r
+#ifdef ESP_PLATFORM\r
+#include <esp_random.h>\r
+#endif\r
\r
+// can be used to disable static allocation\r
+#define STATIC static\r
+\r
+// DEFINES\r
#define LOGIN_REQUEST_SIZE 1024\r
#define LOGIN_RESPONSE_SIZE 1024\r
#define LOGIN_URL "/_matrix/client/v3/login"\r
\r
+#define ENCRYPTED_REQUEST_SIZE (1024*5)\r
+STATIC char g_EncryptedRequestBuffer[ENCRYPTED_REQUEST_SIZE];\r
+#define ENCRYPTED_EVENT_SIZE (1024*10)\r
+STATIC char g_EncryptedEventBuffer[ENCRYPTED_EVENT_SIZE];\r
+#define ROOM_SEND_REQUEST_SIZE 256\r
+#define ROOM_SEND_RESPONSE_SIZE 1024\r
+#define ROOM_SEND_URL "/_matrix/client/v3/rooms/%s/send/%s/%d"\r
+\r
+#define ROOMKEY_REQUEST_SIZE (1024*4)\r
+\r
+#define TODEVICE_EVENT_SIZE (1024*5)\r
+STATIC char g_TodeviceEventBuffer[TODEVICE_EVENT_SIZE];\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*5)\r
+\r
+#define KEYS_UPLOAD_URL "/_matrix/client/v3/keys/upload"\r
+#define KEYS_UPLOAD_REQUEST_SIZE 1024*4\r
+STATIC char g_KeysUploadRequestBuffer[KEYS_UPLOAD_REQUEST_SIZE];\r
+#define KEYS_UPLOAD_REQUEST_SIGNED_SIZE 2048*4\r
+STATIC char g_KeysUploadRequestSignedBuffer[KEYS_UPLOAD_REQUEST_SIGNED_SIZE];\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 SYNC_TIMEOUT 5000\r
+\r
+#define JSON_QUERY_SIZE 128\r
+#define JSON_MAX_INDICES 100\r
+#define JSON_MAX_ENTRY_SIZE 1024\r
+\r
+#define MAX(a,b) ((a) > (b) ? (a) : (b))\r
+#define MIN(a,b) ((a) < (b) ? (a) : (b))\r
+\r
+// Util\r
+\r
+void\r
+Randomize(\r
+ uint8_t * random,\r
+ int randomLen)\r
+{\r
+ #ifdef ESP_PLATFORM\r
+\r
+ for (int i = 0; i < randomLen; i++)\r
+ {\r
+ random[i] = esp_random() % 256;\r
+ }\r
+\r
+ #else\r
+\r
+ STATIC bool first = true;\r
+ if (first) { srand(time(0)); first = false; }\r
+\r
+ for (int i = 0; i < randomLen; i++)\r
+ {\r
+ random[i] = rand() % 256;\r
+ }\r
+\r
+ #endif\r
+}\r
+\r
+bool\r
+JsonEscape(\r
+ const char * sIn, int sInLen,\r
+ char * sOut, int sOutCap)\r
+{\r
+ int sOutIndex = 0;\r
+\r
+ for (int i = 0; i < sInLen; i++)\r
+ {\r
+ if (i >= sOutCap)\r
+ return false;\r
+ \r
+ if (sIn[i] == '.' ||\r
+ sIn[i] == '[' ||\r
+ sIn[i] == ']'\r
+ ) {\r
+ sOut[sOutIndex++] = '\\';\r
+ }\r
+ sOut[sOutIndex++] = sIn[i];\r
+ }\r
+\r
+ if (sOutIndex < sOutCap)\r
+ sOut[sOutIndex] = '\0';\r
+\r
+ return true;\r
+}\r
+\r
+bool\r
+JsonCanonicalize(\r
+ const char * sIn, int sInLen,\r
+ char * sOut, int sOutCap)\r
+{\r
+ snprintf(sOut, sOutCap, "{}");\r
+\r
+ int koff, klen, voff, vlen, vtype, off;\r
+\r
+ struct Key {\r
+ const char * ptr;\r
+ int len;\r
+ };\r
+\r
+ struct Key keys[JSON_MAX_INDICES];\r
+ int numKeys = 0;\r
+\r
+ for (off = 0; (off = mjson_next(sIn, sInLen, off, &koff, &klen, &voff, &vlen, &vtype)) != 0; ) {\r
+ keys[numKeys].ptr = sIn + koff;\r
+ keys[numKeys].len = klen;\r
+ numKeys++;\r
+ }\r
+\r
+ for (int i = 0; i < numKeys; i++) {\r
+ for (int j = i; j < numKeys; j++) {\r
+ if (\r
+ strncmp(\r
+ keys[i].ptr,\r
+ keys[j].ptr,\r
+ MIN(keys[i].len, keys[j].len)\r
+ ) > 0\r
+ ) {\r
+ struct Key k = keys[i];\r
+ keys[i] = keys[j];\r
+ keys[j] = k;\r
+ }\r
+ }\r
+ }\r
+\r
+ for (int i = 0; i < numKeys; i++) {\r
+ char jp[JSON_QUERY_SIZE];\r
+ snprintf(jp, JSON_QUERY_SIZE, "$.%.*s", keys[i].len-2, keys[i].ptr+1);\r
+\r
+ const char * valPtr;\r
+ int valLen;\r
+ mjson_find(sIn, sInLen, jp, &valPtr, &valLen);\r
+ \r
+ STATIC char newEntry[JSON_MAX_ENTRY_SIZE];\r
+ snprintf(newEntry, JSON_MAX_ENTRY_SIZE, "{%.*s:%.*s}", keys[i].len, keys[i].ptr, valLen, valPtr);\r
+\r
+ char * buffer = strdup(sOut);\r
+\r
+ struct mjson_fixedbuf fb = { sOut, sOutCap, 0 };\r
+ mjson_merge(buffer, strlen(buffer), newEntry, strlen(newEntry), mjson_print_fixed_buf, &fb);\r
+\r
+ free(buffer);\r
+ }\r
+\r
+ // TODO: recursively sort entries\r
+\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 thisSigningKey[SIGNING_KEY_SIZE];\r
+ MatrixOlmAccountGetSigningKey(&client->olmAccount, thisSigningKey, SIGNING_KEY_SIZE);\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
+ //"1",\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
+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
+bool\r
+MatrixOlmAccountUnpickle(\r
+ MatrixOlmAccount * account,\r
+ void * pickled, int pickledLen,\r
+ const void * key, int keyLen)\r
+{\r
+ size_t res;\r
+ res = olm_unpickle_account(account->account,\r
+ key, keyLen,\r
+ pickled, pickledLen);\r
+ if (res == olm_error()) {\r
+ printf("error unpickling olm account:%s\n",\r
+ olm_account_last_error(account->account));\r
+ }\r
+ return res != olm_error();\r
+}\r
+\r
+bool\r
+MatrixOlmAccountGetDeviceKey(\r
+ MatrixOlmAccount * account,\r
+ char * key, int keyCap)\r
+{\r
+ STATIC char deviceKeysJson[OLM_IDENTITY_KEYS_JSON_SIZE];\r
+ size_t res =\r
+ olm_account_identity_keys(account->account,\r
+ deviceKeysJson, OLM_IDENTITY_KEYS_JSON_SIZE);\r
+ mjson_get_string(deviceKeysJson, res,\r
+ "$.curve25519",\r
+ key, keyCap);\r
+ return true;\r
+}\r
+\r
+bool\r
+MatrixOlmAccountGetSigningKey(\r
+ MatrixOlmAccount * account,\r
+ char * key, int keyCap)\r
+{\r
+ STATIC char deviceKeysJson[OLM_IDENTITY_KEYS_JSON_SIZE];\r
+ size_t res =\r
+ olm_account_identity_keys(account->account,\r
+ deviceKeysJson, OLM_IDENTITY_KEYS_JSON_SIZE);\r
+ mjson_get_string(deviceKeysJson, res,\r
+ "$.ed25519",\r
+ key, keyCap);\r
+ return true;\r
+}\r
+\r
+bool\r
+MatrixOlmSessionFrom(\r
+ MatrixOlmSession * session,\r
+ OlmAccount * olmAccount,\r
+ const char * deviceId,\r
+ const char * deviceKey,\r
+ const char * encrypted)\r
+{\r
+ memset(session, 0, sizeof(MatrixOlmSession));\r
+\r
+ session->deviceId = deviceId;\r
+\r
+ session->session =\r
+ olm_session(session->memory);\r
+ \r
+ char * encryptedCopy = strdup(encrypted);\r
+ \r
+ size_t res =\r
+ olm_create_inbound_session_from(session->session, olmAccount,\r
+ deviceKey, strlen(deviceKey),\r
+ encryptedCopy, strlen(encryptedCopy));\r
+ \r
+ if (res == olm_error()) {\r
+ printf("error olm:%s\n", olm_session_last_error(session->session));\r
+ }\r
+\r
+ return res != olm_error();\r
+}\r
+\r
+bool\r
+MatrixOlmSessionTo(\r
+ MatrixOlmSession * session,\r
+ OlmAccount * olmAccount,\r
+ const char * deviceId,\r
+ const char * deviceKey,\r
+ const char * deviceOnetimeKey)\r
+{\r
+ memset(session, 0, sizeof(MatrixOlmSession));\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
+ size_t res =\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
+ if (res == olm_error()) {\r
+ printf("error olm:%s\n", olm_session_last_error(session->session));\r
+ }\r
+\r
+ return res != olm_error();\r
+}\r
+\r
+bool\r
+MatrixOlmSessionUnpickle(\r
+ MatrixOlmSession * session,\r
+ const char * deviceId,\r
+ void * pickled, int pickledLen,\r
+ const void * key, int keyLen)\r
+{\r
+ memset(session, 0, sizeof(MatrixOlmSession));\r
+\r
+ session->deviceId = deviceId;\r
+\r
+ session->session =\r
+ olm_session(session->memory);\r
+ \r
+ size_t res;\r
+ res = olm_unpickle_session(session->session,\r
+ key, keyLen,\r
+ pickled, pickledLen);\r
+ \r
+ if (res == olm_error()) {\r
+ printf("error unpickling olm session:%s\n", olm_session_last_error(session->session));\r
+ }\r
+\r
+ return res != olm_error();\r
+}\r
+\r
+bool\r
+MatrixOlmSessionEncrypt(\r
+ MatrixOlmSession * session,\r
+ const char * plaintext,\r
+ char * outBuffer, int outBufferCap)\r
+{\r
+ STATIC uint8_t random[OLM_ENCRYPT_RANDOM_SIZE];\r
+ Randomize(random, OLM_ENCRYPT_RANDOM_SIZE);\r
+\r
+ memset(outBuffer, 0, outBufferCap);\r
+ size_t res = olm_encrypt(session->session,\r
+ plaintext, strlen(plaintext),\r
+ random, OLM_ENCRYPT_RANDOM_SIZE,\r
+ outBuffer, outBufferCap);\r
+\r
+ return res != olm_error();\r
+}\r
+\r
+bool\r
+MatrixOlmSessionDecrypt(\r
+ MatrixOlmSession * session,\r
+ size_t messageType,\r
+ char * encrypted,\r
+ char * outBuffer, int outBufferCap)\r
+{\r
+ STATIC uint8_t random[OLM_ENCRYPT_RANDOM_SIZE];\r
+ Randomize(random, OLM_ENCRYPT_RANDOM_SIZE);\r
+\r
+ size_t res =\r
+ olm_decrypt(session->session,\r
+ messageType,\r
+ encrypted, strlen(encrypted),\r
+ outBuffer, outBufferCap);\r
+ \r
+ if (res != olm_error() && (int)res < outBufferCap)\r
+ outBuffer[res] = '\0';\r
+\r
+ return res != olm_error();\r
+}\r
+\r
+bool\r
+MatrixMegolmInSessionInit(\r
+ MatrixMegolmInSession * session,\r
+ const char * roomId,\r
+ const char * sessionId,\r
+ const char * sessionKey, int sessionKeyLen)\r
+{\r
+ memset(session, 0, sizeof(MatrixMegolmInSession));\r
+ \r
+ strncpy(session->roomId, roomId, sizeof(session->roomId));\r
+ strncpy(session->id, sessionId, sizeof(session->id));\r
+ strncpy(session->key, sessionKey, sizeof(session->key));\r
+\r
+ session->session =\r
+ olm_inbound_group_session(session->memory);\r
+\r
+ size_t res =\r
+ olm_init_inbound_group_session(\r
+ // olm_import_inbound_group_session(\r
+ session->session,\r
+ (const uint8_t *)sessionKey, sessionKeyLen);\r
+ if (res == olm_error()) {\r
+ printf("Error initializing Megolm session: %s\n", olm_inbound_group_session_last_error(session->session));\r
+ }\r
+\r
+ return res != olm_error();\r
+}\r
+\r
+bool\r
+MatrixMegolmInSessionDecrypt(\r
+ MatrixMegolmInSession * session,\r
+ const char * encrypted, int encryptedLen,\r
+ char * outDecrypted, int outDecryptedCap)\r
+{\r
+ // uint8_t buffer[1024];\r
+ // memcpy(buffer, encrypted, encryptedLen);\r
+\r
+ uint32_t megolmInMessageIndex;\r
+\r
+ size_t res =\r
+ olm_group_decrypt(session->session,\r
+ (uint8_t *)encrypted, encryptedLen,\r
+ (uint8_t *)outDecrypted, outDecryptedCap,\r
+ &megolmInMessageIndex);\r
+ \r
+ if (res == olm_error()) {\r
+ printf("error decrypting megolm message: %s\n", olm_inbound_group_session_last_error(session->session));\r
+ }\r
+ \r
+ return true;\r
+}\r
+\r
+// https://matrix.org/docs/guides/end-to-end-encryption-implementation-guide#starting-a-megolm-session\r
+bool\r
+MatrixMegolmOutSessionInit(\r
+ MatrixMegolmOutSession * session,\r
+ const char * roomId)\r
+{\r
+ memset(session, 0, sizeof(MatrixMegolmOutSession));\r
+\r
+ STATIC uint8_t random[MEGOLM_INIT_RANDOM_SIZE];\r
+ Randomize(random, MEGOLM_INIT_RANDOM_SIZE);\r
+\r
+ strncpy(session->roomId, roomId, ROOM_ID_SIZE);\r
+\r
+ session->session =\r
+ olm_outbound_group_session(session->memory);\r
+\r
+ olm_init_outbound_group_session(\r
+ session->session,\r
+ random,\r
+ MEGOLM_INIT_RANDOM_SIZE);\r
+\r
+ olm_outbound_group_session_id(session->session,\r
+ (uint8_t *)session->id,\r
+ MEGOLM_SESSION_ID_SIZE);\r
+ \r
+ olm_outbound_group_session_key(session->session,\r
+ (uint8_t *)session->key,\r
+ MEGOLM_SESSION_KEY_SIZE);\r
+ \r
+ return true;\r
+}\r
+\r
+bool\r
+MatrixMegolmOutSessionEncrypt(\r
+ MatrixMegolmOutSession * session,\r
+ const char * plaintext,\r
+ char * outBuffer, int outBufferCap)\r
+{\r
+ memset(outBuffer, 0, outBufferCap);\r
+ size_t res = olm_group_encrypt(session->session,\r
+ (uint8_t *)plaintext, strlen(plaintext),\r
+ (uint8_t *)outBuffer, outBufferCap);\r
+\r
+ return res != olm_error();\r
+}\r
+\r
\r
bool\r
MatrixClientInit(\r
+ MatrixClient * client)\r
+{\r
+ memset(client, 0, sizeof(MatrixClient));\r
+\r
+ // init olm account\r
+ MatrixOlmAccountInit(&client->olmAccount);\r
+\r
+ return true;\r
+}\r
+\r
+bool\r
+MatrixClientSetAccessToken(\r
MatrixClient * client,\r
- const char * server)\r
+ const char * accessToken)\r
{\r
- strcpy_s(\r
- client->server,\r
- SERVER_SIZE,\r
- server\r
- );\r
+ for (int i = 0; i < ACCESS_TOKEN_SIZE-1; i++)\r
+ client->accessToken[i] = accessToken[i];\r
+ client->accessToken[ACCESS_TOKEN_SIZE-1] = '\0';\r
+\r
+ return true;\r
+}\r
+\r
+bool\r
+MatrixClientSetDeviceId(\r
+ MatrixClient * client,\r
+ const char * deviceId)\r
+{\r
+ for (int i = 0; i < DEVICE_ID_SIZE-1; i++)\r
+ client->deviceId[i] = deviceId[i];\r
+ client->deviceId[DEVICE_ID_SIZE-1] = '\0';\r
+\r
+ return true;\r
+}\r
+\r
+bool\r
+MatrixClientSetUserId(\r
+ MatrixClient * client,\r
+ const char * userId)\r
+{\r
+ for (int i = 0; i < USER_ID_SIZE-1; i++)\r
+ client->userId[i] = userId[i];\r
+ client->userId[USER_ID_SIZE-1] = '\0';\r
\r
return true;\r
}\r
\r
-// https://spec.matrix.org/v1.6/client-server-api/#post_matrixclientv3login\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/v1.8/client-server-api/#post_matrixclientv3keysupload\r
+bool\r
+MatrixClientUploadOnetimeKeys(\r
+ MatrixClient * client)\r
+{\r
+ mjson_snprintf(g_KeysUploadRequestBuffer, KEYS_UPLOAD_REQUEST_SIZE,\r
+ "{");\r
+\r
+ STATIC char onetimeKeysBuffer[1024];\r
+ olm_account_one_time_keys(client->olmAccount.account,\r
+ onetimeKeysBuffer, 1024);\r
+\r
+ // olm_account_one_time_keys returns a json object\r
+ // find curve25519 member\r
+ const char *keys;\r
+ int keysLen;\r
+ mjson_find(onetimeKeysBuffer, strlen(onetimeKeysBuffer), "$.curve25519", &keys, &keysLen);\r
+\r
+ // iterate over onetime keys, create key object\r
+ // sign it and append to request\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
+ int keyJsonLen =\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, keyJsonLen,\r
+ keyJsonSigned, JSON_ONETIME_KEY_SIGNED_SIZE);\r
+ \r
+ mjson_snprintf(g_KeysUploadRequestBuffer+strlen(g_KeysUploadRequestBuffer), KEYS_UPLOAD_REQUEST_SIZE-strlen(g_KeysUploadRequestBuffer),\r
+ "\"signed_curve25519:%.*s\":%s,",\r
+ klen-2, keys + koff+1,\r
+ keyJsonSigned);\r
+ }\r
+\r
+ // delete last ',' since the loop always appends it\r
+ if (g_KeysUploadRequestBuffer[strlen(g_KeysUploadRequestBuffer)-1] == ',')\r
+ g_KeysUploadRequestBuffer[strlen(g_KeysUploadRequestBuffer)-1] = '\0';\r
+\r
+ mjson_snprintf(g_KeysUploadRequestBuffer+strlen(g_KeysUploadRequestBuffer), KEYS_UPLOAD_REQUEST_SIZE-strlen(g_KeysUploadRequestBuffer),\r
+ "}");\r
+\r
+ snprintf(g_KeysUploadRequestSignedBuffer, KEYS_UPLOAD_REQUEST_SIGNED_SIZE,\r
+ "{\"one_time_keys\":%s}", g_KeysUploadRequestBuffer);\r
+\r
+ STATIC char responseBuffer[KEYS_UPLOAD_RESPONSE_SIZE];\r
+ MatrixHttpPost(client->hc,\r
+ KEYS_UPLOAD_URL,\r
+ g_KeysUploadRequestSignedBuffer,\r
+ responseBuffer, KEYS_UPLOAD_RESPONSE_SIZE,\r
+ true);\r
+\r
+ return true;\r
+}\r
+\r
+// https://spec.matrix.org/v1.8/client-server-api/#post_matrixclientv3keysupload\r
+bool\r
+MatrixClientUploadDeviceKeys(\r
+ MatrixClient * client)\r
+{\r
+ char thisDeviceKey[DEVICE_KEY_SIZE];\r
+ MatrixOlmAccountGetDeviceKey(&client->olmAccount, thisDeviceKey, DEVICE_KEY_SIZE);\r
+ char thisSigningKey[DEVICE_KEY_SIZE];\r
+ MatrixOlmAccountGetSigningKey(&client->olmAccount, thisSigningKey, DEVICE_KEY_SIZE);\r
+\r
+ int deviceKeysBufferLen =\r
+ mjson_snprintf(g_KeysUploadRequestBuffer, KEYS_UPLOAD_REQUEST_SIZE,\r
+ "{"\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, thisDeviceKey,\r
+ client->deviceId, thisSigningKey,\r
+ client->userId);\r
+\r
+ JsonSign(client,\r
+ g_KeysUploadRequestBuffer, deviceKeysBufferLen,\r
+ g_KeysUploadRequestSignedBuffer, KEYS_UPLOAD_REQUEST_SIZE);\r
+ \r
+ STATIC char finalEvent[KEYS_UPLOAD_REQUEST_SIGNED_SIZE+30];\r
+ snprintf(finalEvent, KEYS_UPLOAD_REQUEST_SIGNED_SIZE+30,\r
+ "{\"device_keys\":%s}", g_KeysUploadRequestSignedBuffer);\r
+\r
+ STATIC char responseBuffer[KEYS_UPLOAD_RESPONSE_SIZE];\r
+ MatrixHttpPost(client->hc,\r
+ KEYS_UPLOAD_URL,\r
+ finalEvent,\r
+ responseBuffer, KEYS_UPLOAD_RESPONSE_SIZE,\r
+ true);\r
+\r
+ return true;\r
+}\r
+\r
+// https://spec.matrix.org/v1.8/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->hc,\r
+ KEYS_CLAIM_URL,\r
+ requestBuffer,\r
+ responseBuffer, KEYS_CLAIM_RESPONSE_SIZE,\r
+ true);\r
+ \r
+ STATIC char userIdEscaped[USER_ID_SIZE];\r
+ JsonEscape(userId, strlen(userId),\r
+ userIdEscaped, USER_ID_SIZE);\r
+ \r
+ // create the json query according to\r
+ // https://spec.matrix.org/v1.8/client-server-api/#post_matrixclientv3keysclaim\r
+ STATIC char query[JSON_QUERY_SIZE];\r
+ snprintf(query, JSON_QUERY_SIZE,\r
+ "$.one_time_keys.%s.%s",\r
+ userIdEscaped,\r
+ deviceId);\r
+ \r
+ // find the corresponding json object\r
+ const char * keyObject;\r
+ int keyObjectSize;\r
+ mjson_find(responseBuffer, strlen(responseBuffer),\r
+ query,\r
+ &keyObject, &keyObjectSize);\r
+ \r
+ // use mjson_next (which iterates over all key/value pairs) once\r
+ // because we only request one key\r
+ // (see https://github.com/cesanta/mjson#mjson_next for details)\r
+ int koff, klen, voff, vlen, vtype;\r
+ mjson_next(keyObject, keyObjectSize, 0,\r
+ &koff, &klen, &voff, &vlen, &vtype);\r
+ \r
+ mjson_get_string(keyObject + voff, vlen,\r
+ "$.key", outOnetimeKey, outOnetimeKeyCap);\r
+ \r
+ // TODO: verify signature\r
+ \r
+ return true;\r
+}\r
+\r
+// https://spec.matrix.org/v1.8/client-server-api/#post_matrixclientv3login\r
bool\r
MatrixClientLoginPassword(\r
MatrixClient * client,\r
const char * password,\r
const char * displayName)\r
{\r
- static char requestBuffer[LOGIN_REQUEST_SIZE];\r
+ STATIC char requestBuffer[LOGIN_REQUEST_SIZE];\r
\r
mjson_snprintf(requestBuffer, LOGIN_REQUEST_SIZE,\r
"{"\r
- "\"type\": \"m.login.password\","\r
- "\"identifier\": {"\r
- "\"type\": \"m.id.user\","\r
- "\"user\": \"%s\""\r
+ "\"type\":\"m.login.password\","\r
+ "\"identifier\":{"\r
+ "\"type\":\"m.id.user\","\r
+ "\"user\":\"%s\""\r
"},"\r
- "\"password\": \"%s\","\r
- "\"initial_device_display_name\": \"%s\""\r
+ "\"password\":\"%s\","\r
+ "\"initial_device_display_name\":\"%s\""\r
"}",\r
username,\r
password,\r
displayName);\r
\r
- static char responseBuffer[LOGIN_RESPONSE_SIZE];\r
+ STATIC char responseBuffer[LOGIN_RESPONSE_SIZE];\r
bool result =\r
- MatrixHttpPost(client,\r
+ MatrixHttpPost(client->hc,\r
LOGIN_URL,\r
requestBuffer,\r
- responseBuffer, LOGIN_RESPONSE_SIZE);\r
- \r
- int responseLen = strlen(responseBuffer);\r
+ responseBuffer, LOGIN_RESPONSE_SIZE,\r
+ false);\r
\r
if (!result)\r
return false;\r
+ \r
+ int responseLen = strlen(responseBuffer);\r
\r
+ // store variables in MatrixClient\r
mjson_get_string(responseBuffer, responseLen,\r
"$.access_token",\r
- client->accessTokenBuffer, ACCESS_TOKEN_SIZE);\r
+ client->accessToken, ACCESS_TOKEN_SIZE);\r
mjson_get_string(responseBuffer, responseLen,\r
"$.device_id",\r
- client->deviceIdBuffer, DEVICE_ID_SIZE);\r
+ client->deviceId, DEVICE_ID_SIZE);\r
mjson_get_string(responseBuffer, responseLen,\r
"$.expires_in_ms",\r
- client->expireMsBuffer, EXPIRE_MS_SIZE);\r
+ client->expireMs, EXPIRE_MS_SIZE);\r
mjson_get_string(responseBuffer, responseLen,\r
"$.refresh_token",\r
- client->refreshTokenBuffer, REFRESH_TOKEN_SIZE);\r
+ client->refreshToken, REFRESH_TOKEN_SIZE);\r
+ \r
+ MatrixHttpSetAccessToken(client->hc, client->accessToken);\r
\r
return true;\r
}\r
\r
+// https://spec.matrix.org/v1.8/client-server-api/#put_matrixclientv3roomsroomidsendeventtypetxnid\r
+bool\r
+MatrixClientSendEvent(\r
+ MatrixClient * client,\r
+ const char * roomId,\r
+ const char * msgType,\r
+ const char * msgBody)\r
+{ \r
+ STATIC char requestUrl[MAX_URL_LEN];\r
+ snprintf(requestUrl, MAX_URL_LEN,\r
+ ROOM_SEND_URL, roomId, msgType, (int)time(NULL));\r
+\r
+ STATIC char responseBuffer[ROOM_SEND_RESPONSE_SIZE];\r
+ bool result =\r
+ MatrixHttpPut(client->hc,\r
+ requestUrl,\r
+ msgBody,\r
+ responseBuffer, ROOM_SEND_RESPONSE_SIZE,\r
+ true);\r
+ \r
+ return result;\r
+}\r
+\r
+// https://spec.matrix.org/v1.8/client-server-api/#mroomencrypted\r
+// https://matrix.org/docs/guides/end-to-end-encryption-implementation-guide#sending-an-encrypted-message-event\r
+bool\r
+MatrixClientSendEventEncrypted(\r
+ MatrixClient * client,\r
+ const char * roomId,\r
+ const char * msgType,\r
+ const char * msgBody)\r
+{\r
+ // event json\r
+ STATIC char requestBuffer[ROOM_SEND_REQUEST_SIZE];\r
+ snprintf(requestBuffer, ROOM_SEND_REQUEST_SIZE,\r
+ "{"\r
+ "\"type\":\"%s\","\r
+ "\"content\":%s,"\r
+ "\"room_id\":\"%s\""\r
+ "}",\r
+ msgType,\r
+ msgBody,\r
+ roomId);\r
+\r
+ // get megolm session\r
+ MatrixMegolmOutSession * outSession;\r
+ if (! MatrixClientGetMegolmOutSession(client, roomId, &outSession))\r
+ MatrixClientNewMegolmOutSession(client, roomId, &outSession);\r
+ \r
+ // encrypt\r
+ MatrixMegolmOutSessionEncrypt(outSession,\r
+ requestBuffer,\r
+ g_EncryptedRequestBuffer, ENCRYPTED_REQUEST_SIZE);\r
+\r
+ char thisDeviceKey[DEVICE_KEY_SIZE];\r
+ MatrixOlmAccountGetDeviceKey(&client->olmAccount, thisDeviceKey, DEVICE_KEY_SIZE);\r
+ \r
+\r
+ // encrypted event json\r
+ const char * senderKey = thisDeviceKey;\r
+ const char * sessionId = outSession->id;\r
+ const char * deviceId = client->deviceId;\r
+\r
+ snprintf(g_EncryptedEventBuffer, ENCRYPTED_EVENT_SIZE,\r
+ "{"\r
+ "\"algorithm\":\"m.megolm.v1.aes-sha2\","\r
+ "\"ciphertext\":\"%s\","\r
+ "\"device_id\":\"%s\","\r
+ "\"sender_key\":\"%s\","\r
+ "\"session_id\":\"%s\""\r
+ "}",\r
+ g_EncryptedRequestBuffer,\r
+ deviceId,\r
+ senderKey,\r
+ sessionId);\r
+\r
+ // send\r
+ return MatrixClientSendEvent(client,\r
+ roomId,\r
+ "m.room.encrypted",\r
+ g_EncryptedEventBuffer);\r
+}\r
+\r
+// this handles to_device events received from a sync\r
+// mainly for verification (m.key.verification.* events)\r
+void\r
+MatrixClientHandleEvent(\r
+ MatrixClient * client,\r
+ const char * event, int eventLen\r
+) {\r
+ // get the event type\r
+ STATIC char eventType[128];\r
+ memset(eventType, 0, sizeof(eventType));\r
+ mjson_get_string(event, eventLen, "$.type", eventType, 128);\r
+\r
+ // static variables for verification\r
+ // since verification takes multiple requests\r
+ // data is cleared when verification is finished or started\r
+ static char transactionId[64];\r
+ static char verifyFromDeviceId[DEVICE_ID_SIZE];\r
+ static OlmSAS * olmSas = NULL;\r
+\r
+ // initial verification request, reply that we are ready to verify\r
+ if (strcmp(eventType, "m.key.verification.request") == 0) {\r
+ // reset static data\r
+ memset(transactionId, 0, 64);\r
+ memset(verifyFromDeviceId, 0, DEVICE_ID_SIZE);\r
+ if (olmSas != NULL)\r
+ free(olmSas);\r
+ \r
+ mjson_get_string(event, eventLen, "$.content.transaction_id", transactionId, 64);\r
+ mjson_get_string(event, eventLen, "$.content.from_device", verifyFromDeviceId, DEVICE_ID_SIZE);\r
+ \r
+ char verificationReadyBuffer[2048];\r
+ snprintf(verificationReadyBuffer, 2048,\r
+ "{"\r
+ "\"from_device\":\"%s\","\r
+ "\"methods\":[\"m.sas.v1\"],"\r
+ "\"transaction_id\":\"%s\""\r
+ "}",\r
+ client->deviceId,\r
+ transactionId);\r
+ \r
+ MatrixClientSendToDevice(client,\r
+ client->userId,\r
+ verifyFromDeviceId,\r
+ verificationReadyBuffer,\r
+ "m.key.verification.ready");\r
+ }\r
+ else if (strcmp(eventType, "m.key.verification.start") == 0) {\r
+ olmSas = olm_sas(malloc(olm_sas_size()));\r
+ void * sasRandomBytes = malloc(olm_create_sas_random_length(olmSas));\r
+ olm_create_sas(olmSas,\r
+ sasRandomBytes,\r
+ olm_create_sas_random_length(olmSas));\r
+ \r
+ OlmUtility * olmUtil = olm_utility(malloc(olm_utility_size()));\r
+ \r
+ // calculate commitment according to \r
+ // https://spec.matrix.org/v1.8/client-server-api/#mkeyverificationaccept\r
+ STATIC char publicKey[64];\r
+ STATIC char keyStartJsonCanonical[512];\r
+ STATIC char concat[512+64];\r
+ STATIC char commitment[1024];\r
+ olm_sas_get_pubkey(olmSas,\r
+ publicKey,\r
+ 64);\r
+\r
+ const char * keyStartJson;\r
+ int keyStartJsonLen;\r
+ mjson_find(event, eventLen, "$.content", &keyStartJson, &keyStartJsonLen);\r
+ JsonCanonicalize(keyStartJson, keyStartJsonLen, keyStartJsonCanonical, 512);\r
+\r
+ int concatLen =\r
+ snprintf(concat, 512+64, "%.*s%s", (int)olm_sas_pubkey_length(olmSas), publicKey, keyStartJsonCanonical);\r
+\r
+ int commitmentLen =\r
+ olm_sha256(olmUtil, concat, concatLen, commitment, 1024);\r
+ olm_clear_utility(olmUtil);\r
+ free(olmUtil);\r
+ \r
+ STATIC char verificationAcceptBuffer[512];\r
+ snprintf(verificationAcceptBuffer, 512,\r
+ "{"\r
+ "\"commitment\":\"%.*s\","\r
+ "\"hash\":\"sha256\","\r
+ "\"key_agreement_protocol\":\"curve25519\","\r
+ "\"message_authentication_code\":\"hkdf-hmac-sha256.v2\","\r
+ "\"method\":\"m.sas.v1\","\r
+ "\"short_authentication_string\":[\"decimal\"],"\r
+ "\"transaction_id\":\"%s\""\r
+ "}",\r
+ commitmentLen, commitment,\r
+ transactionId);\r
+ \r
+ MatrixClientSendToDevice(client,\r
+ client->userId,\r
+ verifyFromDeviceId,\r
+ verificationAcceptBuffer,\r
+ "m.key.verification.accept");\r
+ }\r
+ // send our sas key and calculate sas using their received key\r
+ else if (strcmp(eventType, "m.key.verification.key") == 0) {\r
+ STATIC char publicKey[128];\r
+ olm_sas_get_pubkey(olmSas,\r
+ publicKey,\r
+ 128);\r
+\r
+ STATIC char theirPublicKey[128];\r
+ int theirPublicKeyLen =\r
+ mjson_get_string(event, eventLen, "$.content.key", theirPublicKey, 128);\r
+\r
+ olm_sas_set_their_key(olmSas, theirPublicKey, theirPublicKeyLen);\r
+ \r
+ STATIC char verificationKeyBuffer[256];\r
+ snprintf(verificationKeyBuffer, 256,\r
+ "{"\r
+ "\"key\":\"%.*s\","\r
+ "\"transaction_id\":\"%s\""\r
+ "}",\r
+ (int)olm_sas_pubkey_length(olmSas), publicKey,\r
+ transactionId);\r
+ \r
+ MatrixClientSendToDevice(client,\r
+ client->userId,\r
+ verifyFromDeviceId,\r
+ verificationKeyBuffer,\r
+ "m.key.verification.key");\r
+ \r
+ // sas\r
+ STATIC char hkdfInfo[1024];\r
+ int hkdfInfoLen =\r
+ snprintf(hkdfInfo, 1024,\r
+ "MATRIX_KEY_VERIFICATION_SAS%s%s%s%s%s",\r
+ client->userId,\r
+ verifyFromDeviceId,\r
+ client->userId,\r
+ client->deviceId,\r
+ transactionId);\r
+\r
+ unsigned char sasBytes[5];\r
+ olm_sas_generate_bytes(olmSas,\r
+ hkdfInfo, hkdfInfoLen,\r
+ sasBytes, 5);\r
+ int b0 = sasBytes[0];\r
+ int b1 = sasBytes[1];\r
+ int b2 = sasBytes[2];\r
+ int b3 = sasBytes[3];\r
+ int b4 = sasBytes[4];\r
+\r
+ // for now just printf SAS numbers\r
+ // https://spec.matrix.org/v1.8/client-server-api/#sas-method-decimal\r
+ printf("%d | %d | %d\n",\r
+ ((b0 << 5) | (b1 >> 3)) + 1000,\r
+ (((b1 & 0x7) << 10) | (b2 << 2) | (b3 >> 6)) + 1000,\r
+ (((b3 & 0x3F) << 7) | (b4 >> 1)) + 1000);\r
+ }\r
+ // calculate MACs for signing key, master key and the key list\r
+ else if (strcmp(eventType, "m.key.verification.mac") == 0) { \r
+ // mac\r
+ STATIC char masterKey[123];\r
+ MatrixClientRequestMasterKey(client, masterKey, 123);\r
+\r
+ STATIC char keyList[256];\r
+ STATIC char keyListMac[256];\r
+ STATIC char key1Id[128];\r
+ STATIC char key1[128];\r
+ STATIC char key1Mac[128];\r
+ STATIC char key2Id[128];\r
+ STATIC char key2[128];\r
+ STATIC char key2Mac[128];\r
+\r
+ // keys have to be sorted so write keys/key IDs into key1/key2\r
+ // depending on lexicographical order\r
+ if (strcmp(masterKey, client->deviceId) < 0) {\r
+ snprintf(key1Id, 1024, "ed25519:%s", masterKey);\r
+ strcpy(key1, masterKey);\r
+ snprintf(key2Id, 1024, "ed25519:%s", client->deviceId);\r
+ MatrixOlmAccountGetSigningKey(&client->olmAccount, key2, 1024);\r
+ }\r
+ else {\r
+ snprintf(key1Id, 1024, "ed25519:%s", client->deviceId);\r
+ MatrixOlmAccountGetSigningKey(&client->olmAccount, key1, 1024);\r
+ snprintf(key2Id, 1024, "ed25519:%s", masterKey);\r
+ strcpy(key2, masterKey);\r
+ }\r
+\r
+ // create key list\r
+ snprintf(keyList, 1024,\r
+ "%s,%s", key1Id, key2Id);\r
+ \r
+ // generate MAC info for both keys and key list\r
+ // https://spec.matrix.org/v1.8/client-server-api/#mac-calculation\r
+ STATIC char macInfo[1024];\r
+ int macInfoLen;\r
+ {\r
+ macInfoLen =\r
+ snprintf(macInfo, 1024,\r
+ "MATRIX_KEY_VERIFICATION_MAC%s%s%s%s%s%s",\r
+ client->userId,\r
+ client->deviceId,\r
+ client->userId,\r
+ verifyFromDeviceId,\r
+ transactionId,\r
+ "KEY_IDS");\r
+ olm_sas_calculate_mac_fixed_base64(olmSas, keyList, strlen(keyList), macInfo, macInfoLen, keyListMac, 1024);\r
+ }\r
+ {\r
+ macInfoLen =\r
+ snprintf(macInfo, 1024,\r
+ "MATRIX_KEY_VERIFICATION_MAC%s%s%s%s%s%s",\r
+ client->userId,\r
+ client->deviceId,\r
+ client->userId,\r
+ verifyFromDeviceId,\r
+ transactionId,\r
+ key1Id);\r
+ olm_sas_calculate_mac_fixed_base64(olmSas, key1, strlen(key1), macInfo, macInfoLen, key1Mac, 1024);\r
+ }\r
+ {\r
+ macInfoLen =\r
+ snprintf(macInfo, 1024,\r
+ "MATRIX_KEY_VERIFICATION_MAC%s%s%s%s%s%s",\r
+ client->userId,\r
+ client->deviceId,\r
+ client->userId,\r
+ verifyFromDeviceId,\r
+ transactionId,\r
+ key2Id);\r
+ olm_sas_calculate_mac_fixed_base64(olmSas, key2, strlen(key2), macInfo, macInfoLen, key2Mac, 1024);\r
+ }\r
+\r
+ // construct message and send\r
+ STATIC char verificationMacBuffer[1024];\r
+ snprintf(verificationMacBuffer, 1024,\r
+ "{"\r
+ "\"keys\":\"%s\","\r
+ "\"mac\":{"\r
+ "\"%s\":\"%s\","\r
+ "\"%s\":\"%s\""\r
+ "},"\r
+ "\"transaction_id\":\"%s\""\r
+ "}",\r
+ keyListMac,\r
+ key1Id,\r
+ key1Mac,\r
+ key2Id,\r
+ key2Mac,\r
+ transactionId);\r
+ \r
+ MatrixClientSendToDevice(client,\r
+ client->userId,\r
+ verifyFromDeviceId,\r
+ verificationMacBuffer,\r
+ "m.key.verification.mac");\r
+\r
+ // send 'done' message\r
+ STATIC char verificationDoneBuffer[128];\r
+ snprintf(verificationDoneBuffer, 128,\r
+ "{"\r
+ "\"transaction_id\":\"%s\""\r
+ "}",\r
+ transactionId);\r
+ \r
+ MatrixClientSendToDevice(client,\r
+ client->userId,\r
+ verifyFromDeviceId,\r
+ verificationDoneBuffer,\r
+ "m.key.verification.done");\r
+ \r
+ free(olmSas);\r
+\r
+ client->verified = true;\r
+ }\r
+ else if (strcmp(eventType, "m.room.encrypted") == 0) {\r
+ STATIC char algorithm[128];\r
+ mjson_get_string(event, eventLen, "$.content.algorithm", algorithm, 128);\r
+\r
+ // since this only handles to_device messages algorithm should always be olm\r
+ if (strcmp(algorithm, "m.olm.v1.curve25519-aes-sha2") == 0) {\r
+ STATIC char thisDeviceKey[DEVICE_KEY_SIZE];\r
+ MatrixOlmAccountGetDeviceKey(&client->olmAccount, thisDeviceKey, DEVICE_KEY_SIZE);\r
+\r
+ STATIC char jp[128];\r
+ snprintf(jp, 128, "$.content.ciphertext.%s.type", thisDeviceKey);\r
+\r
+ double messageType;\r
+ mjson_get_number(event, eventLen, jp, &messageType);\r
+ int messageTypeInt = (int)messageType;\r
+\r
+ snprintf(jp, 128, "$.content.ciphertext.%s.body", thisDeviceKey);\r
+\r
+ mjson_get_string(event, eventLen, jp, g_EncryptedEventBuffer, 2048);\r
+\r
+ MatrixOlmSession * olmSession;\r
+ \r
+ // depending on message type create new incoming\r
+ // (type 0 indicates a new session so we dont check locally)\r
+ if (messageTypeInt == 0) {\r
+ MatrixClientNewOlmSessionIn(client,\r
+ client->userId,\r
+ verifyFromDeviceId,\r
+ g_EncryptedEventBuffer,\r
+ &olmSession);\r
+ }\r
+ // or new outgoing, checking for known sessions first\r
+ else {\r
+ if (! MatrixClientGetOlmSession(client, client->userId, verifyFromDeviceId, &olmSession))\r
+ {\r
+ MatrixClientNewOlmSessionOut(client,\r
+ client->userId,\r
+ verifyFromDeviceId,\r
+ &olmSession);\r
+ }\r
+ }\r
+ \r
+ STATIC char decrypted[2048];\r
+ MatrixOlmSessionDecrypt(olmSession,\r
+ messageTypeInt, g_EncryptedEventBuffer, decrypted, 2048);\r
+ \r
+ MatrixClientHandleEvent(client, decrypted, strlen(decrypted));\r
+ }\r
+ }\r
+ else if (strcmp(eventType, "m.room_key") == 0 ||\r
+ strcmp(eventType, "m.forwarded_room_key") == 0) {\r
+ // store session information\r
+ STATIC char roomId[128];\r
+ STATIC char sessionId[128];\r
+ STATIC char sessionKey[1024];\r
+ mjson_get_string(event, eventLen, "$.content.room_id", roomId, 128);\r
+ mjson_get_string(event, eventLen, "$.content.session_id", sessionId, 128);\r
+ mjson_get_string(event, eventLen, "$.content.session_key", sessionKey, 1024);\r
+\r
+ MatrixMegolmInSession * megolmInSession;\r
+ MatrixClientNewMegolmInSession(client, roomId, sessionId, sessionKey, &megolmInSession);\r
+ }\r
+}\r
+\r
+void\r
+MatrixClientHandleRoomEvent(\r
+ MatrixClient * client,\r
+ const char * room, int roomLen,\r
+ const char * event, int eventLen)\r
+{\r
+ STATIC char eventType[128];\r
+ memset(eventType, 0, sizeof(eventType));\r
+ mjson_get_string(event, eventLen, "$.type", eventType, 128);\r
+\r
+ if (strcmp(eventType, "m.room.encrypted") == 0) {\r
+ STATIC char algorithm[128];\r
+ mjson_get_string(event, eventLen, "$.content.algorithm", algorithm, 128);\r
+\r
+ // only room specific message type is encrypted\r
+ // since this is only room messages, algorithm should always be megolm\r
+ if (strcmp(algorithm, "m.megolm.v1.aes-sha2") == 0) {\r
+ STATIC char sessionId[128];\r
+ int sessionIdLen =\r
+ mjson_get_string(event, eventLen, "$.content.session_id", sessionId, 128);\r
+\r
+ bool res;\r
+\r
+ MatrixMegolmInSession * megolmInSession;\r
+ res = MatrixClientGetMegolmInSession(client,\r
+ room, roomLen,\r
+ sessionId, sessionIdLen,\r
+ &megolmInSession);\r
+\r
+ if (res) {\r
+ mjson_get_string(event, eventLen, "$.content.ciphertext", g_EncryptedEventBuffer, 2048);\r
+\r
+ STATIC char decrypted[2048];\r
+ MatrixMegolmInSessionDecrypt(megolmInSession, g_EncryptedEventBuffer, strlen(g_EncryptedEventBuffer), decrypted, 2048);\r
+\r
+ MatrixClientHandleEvent(client, decrypted, strlen(decrypted));\r
+ }\r
+ else {\r
+ printf("error: megolm session not known\n");\r
+ }\r
+ }\r
+ }\r
+ MatrixClientHandleEvent(client, event, eventLen);\r
+}\r
+\r
+// pass the response from sync to Handle(Room)Event\r
+void\r
+MatrixClientHandleSync(\r
+ MatrixClient * client,\r
+ char * syncBuffer, int syncBufferLen,\r
+ char * nextBatch, int nextBatchCap)\r
+{ \r
+ int res;\r
+\r
+ const char * s = syncBuffer;\r
+ int slen = syncBufferLen;\r
+\r
+ // read next_batch\r
+ mjson_get_string(s, slen, "$.next_batch", nextBatch, nextBatchCap);\r
+\r
+ // to_device\r
+ const char * events;\r
+ int eventsLen;\r
+ res =\r
+ mjson_find(s, slen, "$.to_device.events", &events, &eventsLen);\r
+ \r
+ // iterate event and pass to HandleEvent\r
+ if (res != MJSON_TOK_INVALID) {\r
+ {\r
+ int koff, klen, voff, vlen, vtype, off = 0;\r
+ for (off = 0; (off = mjson_next(events, eventsLen, off, &koff, &klen,\r
+ &voff, &vlen, &vtype)) != 0; ) {\r
+ const char * v = events + voff;\r
+\r
+ MatrixClientHandleEvent(client, v, vlen);\r
+ }\r
+ }\r
+ }\r
+\r
+ // rooms\r
+ const char * rooms;\r
+ int roomsLen;\r
+ res =\r
+ mjson_find(s, slen, "$.rooms.join", &rooms, &roomsLen);\r
+ \r
+ if (res != MJSON_TOK_INVALID) {\r
+ // iterate rooms\r
+ int koff, klen, voff, vlen, vtype, off = 0;\r
+ for (off = 0; (off = mjson_next(rooms, roomsLen, off, &koff, &klen,\r
+ &voff, &vlen, &vtype)) != 0; ) {\r
+ const char * k = rooms + koff;\r
+ const char * v = rooms + voff;\r
+\r
+ const char * events;\r
+ int eventsLen;\r
+ res =\r
+ mjson_find(v, vlen, "$.timeline.events", &events, &eventsLen);\r
+ \r
+ if (res != MJSON_TOK_INVALID) {\r
+ // iterate messages in that room\r
+ int koff2, klen2, voff2, vlen2, vtype2, off2 = 0;\r
+ for (off2 = 0; (off2 = mjson_next(events, eventsLen, off2, &koff2, &klen2,\r
+ &voff2, &vlen2, &vtype2)) != 0; ) {\r
+ const char * v2 = events + voff2;\r
+\r
+ MatrixClientHandleRoomEvent(client,\r
+ k+1, klen-2,\r
+ v2, vlen2);\r
+ }\r
+ }\r
+ }\r
+ }\r
+}\r
+\r
+// https://spec.matrix.org/v1.8/client-server-api/#get_matrixclientv3sync\r
+bool\r
+MatrixClientSync(\r
+ MatrixClient * client,\r
+ char * outSyncBuffer, int outSyncCap,\r
+ char * nextBatch, int nextBatchCap)\r
+{\r
+ // filter={\"event_fields\":[\"to_device\"]}\r
+ STATIC char url[MAX_URL_LEN];\r
+ snprintf(url, MAX_URL_LEN,\r
+ "/_matrix/client/v3/sync?timeout=%d" "%s" "%s",\r
+ SYNC_TIMEOUT,\r
+ "",\r
+ // "&filter={\"event_fields\":[\"to_device\"]}",\r
+ strlen(nextBatch) > 0 ? "&since=" : "");\r
+ \r
+ int index = strlen(url);\r
+\r
+ // URL encode next_batch parameter since it can include ~\r
+ for (size_t i = 0; i < strlen(nextBatch); i++) {\r
+ char c = nextBatch[i];\r
+\r
+ if (c == '~') {\r
+ url[index++] = '%';\r
+ url[index++] = '7';\r
+ url[index++] = 'E';\r
+ }\r
+ else {\r
+ url[index++] = c;\r
+ }\r
+ }\r
+ url[index] = '\0';\r
+\r
+ bool result =\r
+ MatrixHttpGet(client->hc,\r
+ url,\r
+ outSyncBuffer, outSyncCap,\r
+ true);\r
+ \r
+ MatrixClientHandleSync(client,\r
+ outSyncBuffer, strlen(outSyncBuffer),\r
+ nextBatch, nextBatchCap);\r
+ \r
+ return result;\r
+}\r
+\r
+// https://spec.matrix.org/v1.8/client-server-api/#get_matrixclientv3roomsroomideventeventid\r
+bool\r
+MatrixClientGetRoomEvent(\r
+ MatrixClient * client,\r
+ const char * roomId,\r
+ const char * eventId,\r
+ char * outEvent, int outEventCap)\r
+{\r
+ STATIC char url[MAX_URL_LEN];\r
+ snprintf(url, MAX_URL_LEN,\r
+ "/_matrix/client/v3/rooms/%s/event/%s",\r
+ roomId,\r
+ eventId);\r
+\r
+ return\r
+ MatrixHttpGet(client->hc,\r
+ url,\r
+ outEvent, outEventCap,\r
+ true);\r
+}\r
+\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
+ STATIC char eventBuffer[KEY_SHARE_EVENT_LEN];\r
+ snprintf(eventBuffer, KEY_SHARE_EVENT_LEN,\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
+ MatrixClientSendToDeviceEncrypted(client,\r
+ userId,\r
+ deviceId,\r
+ eventBuffer,\r
+ "m.room_key");\r
+\r
+ return true;\r
+}\r
+\r
+bool\r
+MatrixClientGetMegolmOutSession(\r
+ MatrixClient * client,\r
+ const char * roomId,\r
+ MatrixMegolmOutSession ** outSession)\r
+{\r
+ for (int i = 0; i < client->numMegolmOutSessions; i++)\r
+ {\r
+ if (strcmp(client->megolmOutSessions[i].roomId, roomId) == 0)\r
+ {\r
+ *outSession = &client->megolmOutSessions[i];\r
+ return true;\r
+ }\r
+ }\r
+\r
+ return false;\r
+}\r
+\r
+bool\r
+MatrixClientNewMegolmOutSession(\r
+ MatrixClient * client,\r
+ const char * roomId,\r
+ MatrixMegolmOutSession ** outSession)\r
+{\r
+ if (client->numMegolmOutSessions < NUM_MEGOLM_SESSIONS)\r
+ {\r
+ MatrixMegolmOutSession * result =\r
+ &client->megolmOutSessions[client->numMegolmOutSessions];\r
+ \r
+ MatrixMegolmOutSessionInit(result,\r
+ roomId);\r
+\r
+ *outSession = result;\r
+\r
+ client->numMegolmOutSessions++;\r
+\r
+ return true;\r
+ }\r
+\r
+ return false;\r
+}\r
+\r
+bool\r
+MatrixClientGetMegolmInSession(\r
+ MatrixClient * client,\r
+ const char * roomId, int roomIdLen,\r
+ const char * sessionId, int sessionIdLen,\r
+ MatrixMegolmInSession ** outSession)\r
+{\r
+ for (int i = 0; i < client->numMegolmInSessions; i++)\r
+ {\r
+ if (strncmp(client->megolmInSessions[i].roomId, roomId, roomIdLen) == 0 &&\r
+ strncmp(client->megolmInSessions[i].id, sessionId, sessionIdLen) == 0)\r
+ {\r
+ *outSession = &client->megolmInSessions[i];\r
+ return true;\r
+ }\r
+ }\r
+\r
+ return false;\r
+}\r
+\r
+bool\r
+MatrixClientNewMegolmInSession(\r
+ MatrixClient * client,\r
+ const char * roomId,\r
+ const char * sessionId,\r
+ const char * sessionKey,\r
+ MatrixMegolmInSession ** outSession)\r
+{\r
+ if (client->numMegolmInSessions < NUM_MEGOLM_SESSIONS)\r
+ {\r
+ MatrixMegolmInSession * result =\r
+ &client->megolmInSessions[client->numMegolmInSessions];\r
+ \r
+ MatrixMegolmInSessionInit(result,\r
+ roomId,\r
+ sessionId,\r
+ sessionKey, strlen(sessionKey));\r
+ \r
+ *outSession = result;\r
+\r
+ client->numMegolmInSessions++;\r
+\r
+ return true;\r
+ }\r
+\r
+ return false;\r
+}\r
+\r
+bool\r
+MatrixClientRequestMegolmInSession(\r
+ MatrixClient * client,\r
+ const char * roomId,\r
+ const char * sessionId,\r
+ const char * senderKey,\r
+ const char * userId,\r
+ const char * deviceId)\r
+{\r
+ // TODO: cancel requests\r
+ MatrixClientSendDummy(client, userId, deviceId);\r
+\r
+ STATIC char event[ROOMKEY_REQUEST_SIZE];\r
+ snprintf(event, ROOMKEY_REQUEST_SIZE,\r
+ "{"\r
+ "\"action\":\"request\","\r
+ "\"body\":{"\r
+ "\"algorithm\":\"m.megolm.v1.aes-sha2\","\r
+ "\"room_id\":\"%s\","\r
+ "\"sender_key\":\"%s\","\r
+ "\"session_id\":\"%s\""\r
+ "},"\r
+ "\"request_id\":\"%lld\","\r
+ "\"requesting_device_id\":\"%s\""\r
+ "}",\r
+ roomId,\r
+ senderKey,\r
+ sessionId,\r
+ time(NULL),\r
+ client->deviceId);\r
+\r
+ \r
+ MatrixClientSendToDevice(client,\r
+ userId,\r
+ deviceId,\r
+ event,\r
+ "m.room_key_request");\r
+\r
+ return true;\r
+}\r
+\r
+bool\r
+MatrixClientGetOlmSession(\r
+ MatrixClient * client,\r
+ const char * userId,\r
+ const char * deviceId,\r
+ MatrixOlmSession ** outSession)\r
+{\r
+ (void)userId; //unused for now\r
+\r
+ for (int i = 0; i < client->numOlmSessions; i++)\r
+ {\r
+ if (strcmp(client->olmSessions[i].deviceId, deviceId) == 0)\r
+ {\r
+ *outSession = &client->olmSessions[i];\r
+ return true;\r
+ }\r
+ }\r
+\r
+ return false;\r
+}\r
+\r
+bool\r
+MatrixClientNewOlmSessionIn(\r
+ MatrixClient * client,\r
+ const char * userId,\r
+ const char * deviceId,\r
+ const char * encrypted,\r
+ MatrixOlmSession ** outSession)\r
+{\r
+ (void)userId; //unused for now\r
+ \r
+ if (client->numOlmSessions < NUM_OLM_SESSIONS)\r
+ {\r
+ STATIC char deviceKey[DEVICE_KEY_SIZE];\r
+ MatrixClientRequestDeviceKey(client,\r
+ deviceId,\r
+ deviceKey, DEVICE_KEY_SIZE);\r
+\r
+ MatrixOlmSessionFrom(\r
+ &client->olmSessions[client->numOlmSessions],\r
+ client->olmAccount.account,\r
+ deviceId,\r
+ deviceKey,\r
+ encrypted);\r
+\r
+ *outSession = &client->olmSessions[client->numOlmSessions];\r
+ \r
+ client->numOlmSessions++;\r
+\r
+ return true;\r
+ }\r
+\r
+ return false;\r
+}\r
+\r
+bool\r
+MatrixClientNewOlmSessionOut(\r
+ MatrixClient * client,\r
+ const char * userId,\r
+ const char * deviceId,\r
+ MatrixOlmSession ** outSession)\r
+{\r
+ if (client->numOlmSessions < NUM_OLM_SESSIONS)\r
+ {\r
+ STATIC char deviceKey[DEVICE_KEY_SIZE];\r
+ MatrixClientRequestDeviceKey(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
+ MatrixOlmSessionTo(\r
+ &client->olmSessions[client->numOlmSessions],\r
+ client->olmAccount.account,\r
+ deviceId,\r
+ deviceKey,\r
+ onetimeKey);\r
+\r
+ *outSession = &client->olmSessions[client->numOlmSessions];\r
+ \r
+ client->numOlmSessions++;\r
+\r
+ return true;\r
+ }\r
+\r
+ return false;\r
+}\r
+\r
+// https://spec.matrix.org/v1.8/client-server-api/#put_matrixclientv3sendtodeviceeventtypetxnid\r
+bool\r
+MatrixClientSendToDevice(\r
+ MatrixClient * client,\r
+ const char * userId,\r
+ const char * deviceId,\r
+ const char * message,\r
+ const char * msgType)\r
+{\r
+ STATIC char requestUrl[MAX_URL_LEN];\r
+ snprintf(requestUrl, MAX_URL_LEN,\r
+ TODEVICE_URL, msgType, (int)time(NULL));\r
+\r
+ snprintf(g_TodeviceEventBuffer, TODEVICE_EVENT_SIZE,\r
+ "{"\r
+ "\"messages\":{"\r
+ "\"%s\":{"\r
+ "\"%s\":%s"\r
+ "}"\r
+ "}"\r
+ "}",\r
+ userId,\r
+ deviceId,\r
+ message);\r
+\r
+ STATIC char responseBuffer[ROOM_SEND_RESPONSE_SIZE];\r
+ bool result =\r
+ MatrixHttpPut(client->hc,\r
+ requestUrl,\r
+ g_TodeviceEventBuffer,\r
+ responseBuffer, ROOM_SEND_RESPONSE_SIZE,\r
+ true);\r
+ \r
+ return result;\r
+}\r
+\r
+bool\r
+MatrixClientSendToDeviceEncrypted(\r
+ MatrixClient * client,\r
+ const char * userId,\r
+ const char * deviceId,\r
+ const char * message,\r
+ const char * msgType)\r
+{\r
+ // get olm session\r
+ MatrixOlmSession * olmSession;\r
+ if (! MatrixClientGetOlmSession(client, userId, deviceId, &olmSession))\r
+ MatrixClientNewOlmSessionOut(client, userId, deviceId, &olmSession);\r
+\r
+ // create event json\r
+ char targetDeviceKey[DEVICE_KEY_SIZE];\r
+ MatrixClientRequestDeviceKey(client, deviceId, targetDeviceKey, DEVICE_KEY_SIZE);\r
+ char targetSigningKey[SIGNING_KEY_SIZE];\r
+ MatrixClientRequestSigningKey(client, deviceId, targetSigningKey, SIGNING_KEY_SIZE);\r
+ \r
+ char thisSigningKey[DEVICE_KEY_SIZE];\r
+ MatrixOlmAccountGetSigningKey(&client->olmAccount, thisSigningKey, DEVICE_KEY_SIZE);\r
+\r
+ snprintf(g_TodeviceEventBuffer, TODEVICE_EVENT_SIZE,\r
+ "{"\r
+ "\"type\":\"%s\","\r
+ "\"content\":%s,"\r
+ "\"sender\":\"%s\","\r
+ "\"recipient\":\"%s\","\r
+ "\"recipient_keys\":{"\r
+ "\"ed25519\":\"%s\""\r
+ "},"\r
+ "\"keys\":{"\r
+ "\"ed25519\":\"%s\""\r
+ "}"\r
+ "}",\r
+ msgType,\r
+ message,\r
+ client->userId,\r
+ userId, // recipient user id\r
+ targetSigningKey, // recipient device key\r
+ thisSigningKey);\r
+\r
+ // encrypt\r
+ MatrixOlmSessionEncrypt(olmSession,\r
+ g_TodeviceEventBuffer,\r
+ g_EncryptedRequestBuffer, ENCRYPTED_REQUEST_SIZE);\r
+\r
+ char thisDeviceKey[DEVICE_KEY_SIZE];\r
+ MatrixOlmAccountGetDeviceKey(&client->olmAccount, thisDeviceKey, DEVICE_KEY_SIZE);\r
+\r
+ snprintf(g_EncryptedEventBuffer, ENCRYPTED_EVENT_SIZE,\r
+ "{"\r
+ "\"algorithm\":\"m.olm.v1.curve25519-aes-sha2\","\r
+ "\"ciphertext\":{"\r
+ "\"%s\":{"\r
+ "\"body\":\"%s\","\r
+ "\"type\":%d"\r
+ "}"\r
+ "},"\r
+ "\"device_id\":\"%s\","\r
+ "\"sender_key\":\"%s\""\r
+ "}",\r
+ targetDeviceKey,\r
+ // olm_encrypt_message_length(olmSession->session, strlen(g_TodeviceEventBuffer)), g_EncryptedRequestBuffer,\r
+ g_EncryptedRequestBuffer,\r
+ olm_session_has_received_message(olmSession->session),\r
+ client->deviceId,\r
+ thisDeviceKey);\r
+\r
+ // send\r
+ return MatrixClientSendToDevice(\r
+ client,\r
+ userId,\r
+ deviceId,\r
+ g_EncryptedEventBuffer,\r
+ "m.room.encrypted");\r
+}\r
+\r
+bool\r
+MatrixClientSendDummy(\r
+ MatrixClient * client,\r
+ const char * userId,\r
+ const char * deviceId)\r
+{\r
+ return MatrixClientSendToDeviceEncrypted(\r
+ client,\r
+ userId,\r
+ deviceId,\r
+ "{}",\r
+ "m.dummy");\r
+}\r
+\r
+bool\r
+MatrixClientFindDevice(\r
+ MatrixClient * client,\r
+ const char * deviceId,\r
+ MatrixDevice ** outDevice)\r
+{\r
+ for (int i = 0; i < client->numDevices; i++)\r
+ {\r
+ if (strcmp(client->devices[i].deviceId, deviceId) == 0)\r
+ {\r
+ *outDevice = &client->devices[i];\r
+ return true;\r
+ }\r
+ }\r
+\r
+ MatrixClientRequestDeviceKeys(client);\r
+\r
+ for (int i = 0; i < client->numDevices; i++)\r
+ {\r
+ if (strcmp(client->devices[i].deviceId, deviceId) == 0)\r
+ {\r
+ *outDevice = &client->devices[i];\r
+ return true;\r
+ }\r
+ }\r
+\r
+ *outDevice = NULL;\r
+ return false;\r
+}\r
+\r
+bool\r
+MatrixClientRequestDeviceKey(\r
+ MatrixClient * client,\r
+ const char * deviceId,\r
+ char * outDeviceKey, int outDeviceKeyCap)\r
+{\r
+ MatrixDevice * device;\r
+ \r
+ if (MatrixClientFindDevice(client, deviceId, &device))\r
+ {\r
+ strncpy(outDeviceKey, device->deviceKey, outDeviceKeyCap);\r
+ return true;\r
+ }\r
+\r
+ MatrixClientRequestDeviceKeys(client);\r
+ \r
+ if (MatrixClientFindDevice(client, deviceId, &device))\r
+ {\r
+ strncpy(outDeviceKey, device->deviceKey, outDeviceKeyCap);\r
+ return true;\r
+ }\r
+\r
+ return false;\r
+}\r
+\r
+bool\r
+MatrixClientRequestSigningKey(\r
+ MatrixClient * client,\r
+ const char * deviceId,\r
+ char * outSigningKey, int outSigningKeyCap)\r
+{\r
+ MatrixDevice * device;\r
+ \r
+ if (MatrixClientFindDevice(client, deviceId, &device))\r
+ {\r
+ strncpy(outSigningKey, device->signingKey, outSigningKeyCap);\r
+ return true;\r
+ }\r
+\r
+ MatrixClientRequestDeviceKeys(client);\r
+ \r
+ if (MatrixClientFindDevice(client, deviceId, &device))\r
+ {\r
+ strncpy(outSigningKey, device->signingKey, outSigningKeyCap);\r
+ return true;\r
+ }\r
+\r
+ return false;\r
+}\r
+\r
+bool\r
+MatrixClientRequestMasterKey(\r
+ MatrixClient * client,\r
+ char * outMasterKey, int outMasterKeyCap)\r
+{\r
+ if (strlen(client->masterKey) > 0) {\r
+ strncpy(outMasterKey, client->masterKey, outMasterKeyCap);\r
+ return true;\r
+ }\r
+\r
+ MatrixClientRequestDeviceKeys(client);\r
+ \r
+ if (strlen(client->masterKey) > 0) {\r
+ strncpy(outMasterKey, client->masterKey, outMasterKeyCap);\r
+ return true;\r
+ }\r
+\r
+ return false;\r
+}\r
+\r
+// https://spec.matrix.org/v1.8/client-server-api/#post_matrixclientv3keysquery\r
+bool\r
+MatrixClientRequestDeviceKeys(\r
+ MatrixClient * client)\r
+{\r
+ if (client->numDevices >= NUM_DEVICES) {\r
+ printf("error: Maximum number of devices reached\n");\r
+ return false;\r
+ }\r
+\r
+ // escape userId so we can use it in json queries\r
+ STATIC char userIdEscaped[USER_ID_SIZE];\r
+ JsonEscape(client->userId, strlen(client->userId),\r
+ userIdEscaped, USER_ID_SIZE);\r
+\r
+ // construct and send request\r
+ STATIC char request[KEYS_QUERY_REQUEST_SIZE];\r
+ snprintf(request, KEYS_QUERY_REQUEST_SIZE,\r
+ "{\"device_keys\":{\"%s\":[]}}", client->userId);\r
+\r
+ STATIC char responseBuffer[KEYS_QUERY_RESPONSE_SIZE];\r
+ bool requestResult = MatrixHttpPost(client->hc,\r
+ KEYS_QUERY_URL,\r
+ request,\r
+ responseBuffer, KEYS_QUERY_RESPONSE_SIZE,\r
+ true);\r
+\r
+ if (! requestResult)\r
+ return false;\r
+\r
+ // query for retrieving device keys for user id\r
+ STATIC char query[JSON_QUERY_SIZE];\r
+ const char * s;\r
+ int slen;\r
+\r
+ // look for master key\r
+ snprintf(query, JSON_QUERY_SIZE,\r
+ "$.master_keys.%s.keys", userIdEscaped);\r
+ mjson_find(responseBuffer, strlen(responseBuffer),\r
+ query, &s, &slen);\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
+ snprintf(client->masterKey, MASTER_KEY_SIZE,\r
+ "%.*s", vlen-2, s+voff+1);\r
+ }\r
+\r
+ // iterate over returned devices for that userId\r
+ snprintf(query, JSON_QUERY_SIZE,\r
+ "$.device_keys.%s", userIdEscaped);\r
+ \r
+ mjson_find(responseBuffer, strlen(responseBuffer),\r
+ query, &s, &slen);\r
+ \r
+ // loop over keys\r
+ // creating a new device if possible\r
+ for (off = 0; (off = mjson_next(s, slen, off, &koff, &klen,\r
+ &voff, &vlen, &vtype)) != 0; ) {\r
+ const char * key = s + koff;\r
+ const char * val = s + voff;\r
+\r
+ // set device id, "key" is the JSON key\r
+ MatrixDevice d;\r
+ snprintf(d.deviceId, DEVICE_ID_SIZE,\r
+ "%.*s", klen-2, key+1);\r
+\r
+ // look for device key in value\r
+ STATIC char deviceKeyQuery[JSON_QUERY_SIZE];\r
+ snprintf(deviceKeyQuery, JSON_QUERY_SIZE,\r
+ "$.keys.curve25519:%s", d.deviceId);\r
+ mjson_get_string(val, vlen,\r
+ deviceKeyQuery, d.deviceKey, DEVICE_KEY_SIZE);\r
+\r
+ // look for signing key in value\r
+ STATIC char signingKeyQuery[JSON_QUERY_SIZE];\r
+ snprintf(signingKeyQuery, JSON_QUERY_SIZE,\r
+ "$.keys.ed25519:%s", d.deviceId);\r
+ mjson_get_string(val, vlen,\r
+ signingKeyQuery, d.signingKey, SIGNING_KEY_SIZE);\r
+\r
+ // add device\r
+ if (client->numDevices < NUM_DEVICES)\r
+ {\r
+ bool foundDevice = false;\r
+ for (int i = 0; i < client->numDevices; i++)\r
+ if (strcmp(client->devices[i].deviceId, d.deviceId) == 0)\r
+ foundDevice = true;\r
+\r
+ if (! foundDevice) {\r
+ client->devices[client->numDevices] = d;\r
+ client->numDevices++;\r
+ }\r
+ }\r
+ else\r
+ {\r
+ return false;\r
+ }\r
+ }\r
+\r
+ return true;\r
+}\r
+\r
+bool\r
+MatrixClientDeleteDevice(\r
+ MatrixClient * client)\r
+{\r
+ STATIC char deleteRequest[1024];\r
+ snprintf(deleteRequest, 1024,\r
+ "{\"devices\":[\"%s\"]}",\r
+ client->deviceId);\r
+ STATIC char deleteResponse[1024];\r
+ bool res = MatrixHttpPost(client->hc, "/_matrix/client/v3/delete_devices",\r
+ deleteRequest, deleteResponse, 1024, true);\r
+ return res;\r
+}\r
projects / matrix_esp_thesis / blobdiff