syntax = "proto3";

package contraband;
option go_package = "github.com/shehzade/contraband/proto;proto";

service ExfilService {
  rpc UploadChunk(ChunkRequest) returns (ChunkResponse);
  rpc UploadStream(stream ChunkRequest) returns (ChunkResponse);
}

message ChunkRequest {
  bytes token = 1;          // 16-byte session token
  uint32 sequence = 2;      // Chunk sequence number (1-based)
  uint32 total_chunks = 3;  // Total chunk count
  bytes payload = 4;        // Chunk binary payload
  string expected_hash = 5; // Expected SHA-256 hash of complete stream
}

message ChunkResponse {
  bool success = 1;
  string session_id = 2;
  int64 total_bytes = 3;
  string payload_hash = 4;
  string verdict = 5;       // e.g. "EXFIL_SUCCESS"
  string error_message = 6;
}