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- #include <phpcpp.h>
- #include <string.h>
- #include <string>
- #include <unistd.h>
- #include <errno.h>
- //#include <fcntl.h>
- //#include <sys/types.h>
- //#include <sys/stat.h>
- #include <stdio.h>
- //#include "crypto.h"
- #include "ProtobufLAInitiator.h"
- using namespace std;
- // #include <unistd.h>
- // based off the example functionreturnvalue.cpp in PHP-CPP
- /**
- * Namespace to use
- */
- //using namespace std;
- #define DECRYPTOR_PORT 3825
- int local_attestation_successful=0;
- int __ImageBase=0;
- class Mitigator : public Php::Base
- {
- private:
- static std::string mitigator_pubkey_header_value;
- static std::string mitigator_pubkey_header;
- public:
- // adding to extension throws an error if this method is not public
- static void local_attestation_initiator_wrapper()
- {
- printf("Hello.\n"); fflush(stdout);
-
- setbuf(stdout,NULL); uint32_t count;
- uint32_t return_sgx;
- unsigned char* base64_encoded_mitigator_header_and_value = (unsigned char*) malloc(mitigator_pubkey_header.length()+1+216);
- // unsigned char base64_encoded_mitigator_header[229] ; //216=(ceil(160/3) * 4) + 1 (for null character) + 21 for "Mitigator-Public-Key"
- memcpy(base64_encoded_mitigator_header_and_value, mitigator_pubkey_header.c_str(), mitigator_pubkey_header.length());
- return_sgx = local_attestation_initiator(DECRYPTOR_PORT, base64_encoded_mitigator_header_and_value+mitigator_pubkey_header.length());
- if(return_sgx != 0)
- {
- if(return_sgx== 0xFFFFFFFF)
- {
- perror("\nCould not set up the socket: had the following error: "); fflush(stderr);
- }
- else
- {
- printf("\nHad the following error in SGX local attestation: 0x%x", return_sgx);
- fflush(stdout);
- }
- }
- else {
- printf("\nSuccessful LA with port %d.\n", DECRYPTOR_PORT);
- fflush(stdout);
- local_attestation_successful=1;
- printf("length of string was %d\n", mitigator_pubkey_header.length()); fflush(stdout);
- mitigator_pubkey_header_value=std::string((char*)base64_encoded_mitigator_header_and_value,mitigator_pubkey_header.length()+216);
- }
- }
- Mitigator() = default;
- virtual ~Mitigator() = default;
- // call this function in PHP async or call add_header here.
- static Php::Value get_mitigator_header()
- {
- return mitigator_pubkey_header_value;
- }
- // call this func onRequest
- static Php::Value php_decrypt_wrapper(Php::Parameters ¶ms )
- {
- /*
- int counter;
- unsigned char* plaintext_user_data;
- unsigned char* ciphertext_user_data;
- unsigned char* base64_encoded_pub_key;
- Php::Value ciphertext_user_data_obj=params[1];
- Php::Value base64_encoded_pub_key_obj=params[0];
- uint32_t ciphertext_length;
- uint32_t plaintext_length;
- ciphertext_length = params[1].size();
- plaintext_user_data = (unsigned char*) malloc(ciphertext_length);
- // TODO: The arrays returned by the const char* operator in PHP-CPP are highly likely to be null-terminated.
- ciphertext_user_data = (unsigned char*) static_cast<const char*>(ciphertext_user_data_obj);
- base64_encoded_pub_key = (unsigned char*) static_cast<const char*>(base64_encoded_pub_key_obj);
- printf("Base64 encoded key:\n");
- for(counter=0; counter < 88; counter++)
- printf("%c ", base64_encoded_pub_key[counter]);
- printf("\n"); fflush(stdout);
- printf("Ciphertext received:\n");
- for(counter=0 ; counter < ciphertext_length; counter++ )
- printf("0x%02x ", ciphertext_user_data[counter]);
- printf("\n"); fflush(stdout);
- uint32_t ret_status=decrypt_client_data_through_decryptor(base64_encoded_pub_key, ciphertext_user_data, ciphertext_length, (unsigned char*) plaintext_user_data, &plaintext_length);
- if(ret_status != 0)
- {
- printf("Received error code: 0x%02x\n", ret_status); fflush(stdout);
- }
- printf("Going to return this plaintext:\n");
- for(counter=0;counter<plaintext_length;counter++)
- printf("0x%02x ", plaintext_user_data[counter]);
- fflush(stdout);
- std::string plaintext_user_data_str = std::string((char*) plaintext_user_data, plaintext_length);
- // free(plaintext_user_data); // TODO: For some reason, this causes a crash.
- */
- return "Miti";//plaintext_user_data_str; plaintext_user_data_obj; // (ciphertext_user_data, ciphertext_length) ;
- }
- };
-
- std::string Mitigator::mitigator_pubkey_header_value=std::string("!");
- std::string Mitigator::mitigator_pubkey_header=std::string("Mitigator-Public-Key:");
- extern "C" {
- // export the "get_module" function that will be called by the Zend engine
- PHPCPP_EXPORT void *get_module()
- {
- // create extension
- static Php::Extension extension("decryptor_la_setup_and_decryption","1.0");
-
- Php::Class<Mitigator> mitigator("Mitigator");
- mitigator.method<&Mitigator::get_mitigator_header>("get_mitigator_header");
- // mitigator.property("mitigator_header", &Mitigator::get_mitigator_header);
- mitigator.method<&Mitigator::local_attestation_initiator_wrapper>("local_attestation_initiator_wrapper");
- mitigator.method<&Mitigator::php_decrypt_wrapper>("php_decrypt_wrapper", { Php::ByVal("string", Php::Type::String), Php::ByVal("string", Php::Type::String) } );
- extension.onStartup(&Mitigator::local_attestation_initiator_wrapper);
- // extension.onRequest(&Mitigator::php_decrypt_wrapper);
- // return the extension module
- extension.add(mitigator);
- return extension.module();
- }
- }
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