android: voice messages + attachments architecture plan, build fixes

src/chat/db_sync.c

@@ -10,7 +10,7 @@
 #include "../../lib/debug_config.h"
 #include "../../lib/mem.h"
 #include "../../lib/u_async.h"
-#include "../../lib/sha256.h"
+#include <openssl/sha.h>
 #include "../../lib/sqlite3.h"
 #include "../../lib/platform_compat.h"
 #include <string.h>
@@ -131,10 +131,7 @@ static void db_sqlite_close(struct DB_SYNC* db)
 
 static void db_sha256(const uint8_t* data, size_t len, uint8_t hash[32])
 {
-    SC_SHA256_CTX ctx;
-    sc_sha256_init(&ctx);
-    sc_sha256_update(&ctx, data, len);
-    sc_sha256_final(&ctx, hash);
+    SHA256(data, len, hash);
 }
 
 static uint64_t db_hash64(const uint8_t* data, size_t len)
@@ -1220,7 +1217,7 @@ static void db_sync_recv_cb(struct ETCP_CONN* conn, struct ll_entry* entry)
                 const char* tbl = (const char*)sqlite3_column_text(st, 0);
                 const char* ch_id = (const char*)sqlite3_column_text(st, 1);
                 if (!ch_id || !ch_id[0]) continue;
-                uint64_t h; { uint8_t sh[32]; SC_SHA256_CTX ctx; sc_sha256_init(&ctx); sc_sha256_update(&ctx, (const uint8_t*)ch_id, strlen(ch_id)); sc_sha256_final(&ctx, sh); memcpy(&h, sh, 8); }
+                uint64_t h; { uint8_t sh[32]; SHA256((const uint8_t*)ch_id, strlen(ch_id), sh); memcpy(&h, sh, 8); }
                 if (h == hash) {
                     si = db_sync_instance_add(db->inst, tbl, hash, 1);
                     if (si) { si_peer_add(si, src); }