13481121531

Committed 23 Feb 2025 08:06AM UTC coverage: 91.696% (+0.01%) from 91.686%

Build # 13481121531

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push

github

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web-flow

Commit Message

Merge pull request #4704 from randombit/jack/ffi-tidy

FFI cleanups

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80.46

/src/lib/ffi/ffi.cpp

/*
* (C) 2015,2017 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/

#include <botan/ffi.h>

#include <botan/base64.h>
#include <botan/hex.h>
#include <botan/mem_ops.h>
#include <botan/version.h>
#include <botan/internal/ct_utils.h>
#include <botan/internal/ffi_util.h>
#include <cstdio>
#include <cstdlib>

#if defined(BOTAN_HAS_OS_UTILS)
   #include <botan/internal/os_utils.h>
#endif

namespace Botan_FFI {

namespace {

// NOLINTNEXTLINE(*-avoid-non-const-global-variables)
thread_local std::string g_last_exception_what;

}  // namespace

int ffi_error_exception_thrown(const char* func_name, const char* exn, int rc) {
   g_last_exception_what.assign(exn);

#if defined(BOTAN_HAS_OS_UTILS)
   std::string val;
   if(Botan::OS::read_env_variable(val, "BOTAN_FFI_PRINT_EXCEPTIONS") == true && !val.empty()) {
      static_cast<void>(std::fprintf(stderr, "in %s exception '%s' returning %d\n", func_name, exn, rc));
   }
#endif

   return rc;
}

int botan_view_str_bounce_fn(botan_view_ctx vctx, const char* str, size_t len) {
   return botan_view_bin_bounce_fn(vctx, reinterpret_cast<const uint8_t*>(str), len);
}

int botan_view_bin_bounce_fn(botan_view_ctx vctx, const uint8_t* buf, size_t len) {
   if(vctx == nullptr || buf == nullptr) {
      return BOTAN_FFI_ERROR_NULL_POINTER;
   }

   botan_view_bounce_struct* ctx = static_cast<botan_view_bounce_struct*>(vctx);

   const size_t avail = *ctx->out_len;
   *ctx->out_len = len;

   if(avail < len || ctx->out_ptr == nullptr) {
      if(ctx->out_ptr) {
         Botan::clear_mem(ctx->out_ptr, avail);
      }
      return BOTAN_FFI_ERROR_INSUFFICIENT_BUFFER_SPACE;
   } else {
      Botan::copy_mem(ctx->out_ptr, buf, len);
      return BOTAN_FFI_SUCCESS;
   }
}

namespace {

int ffi_map_error_type(Botan::ErrorType err) {
   switch(err) {
      case Botan::ErrorType::Unknown:
         return BOTAN_FFI_ERROR_UNKNOWN_ERROR;

      case Botan::ErrorType::SystemError:
      case Botan::ErrorType::IoError:
      case Botan::ErrorType::Pkcs11Error:
      case Botan::ErrorType::CommonCryptoError:
      case Botan::ErrorType::ZlibError:
      case Botan::ErrorType::Bzip2Error:
      case Botan::ErrorType::LzmaError:
      case Botan::ErrorType::DatabaseError:
         return BOTAN_FFI_ERROR_SYSTEM_ERROR;

      case Botan::ErrorType::TPMError:
         return BOTAN_FFI_ERROR_TPM_ERROR;

      case Botan::ErrorType::NotImplemented:
         return BOTAN_FFI_ERROR_NOT_IMPLEMENTED;
      case Botan::ErrorType::OutOfMemory:
         return BOTAN_FFI_ERROR_OUT_OF_MEMORY;
      case Botan::ErrorType::InternalError:
         return BOTAN_FFI_ERROR_INTERNAL_ERROR;
      case Botan::ErrorType::InvalidObjectState:
         return BOTAN_FFI_ERROR_INVALID_OBJECT_STATE;
      case Botan::ErrorType::KeyNotSet:
         return BOTAN_FFI_ERROR_KEY_NOT_SET;
      case Botan::ErrorType::InvalidArgument:
      case Botan::ErrorType::InvalidNonceLength:
         return BOTAN_FFI_ERROR_BAD_PARAMETER;

      case Botan::ErrorType::EncodingFailure:
      case Botan::ErrorType::DecodingFailure:
         return BOTAN_FFI_ERROR_INVALID_INPUT;

      case Botan::ErrorType::InvalidTag:
         return BOTAN_FFI_ERROR_BAD_MAC;

      case Botan::ErrorType::InvalidKeyLength:
         return BOTAN_FFI_ERROR_INVALID_KEY_LENGTH;
      case Botan::ErrorType::LookupError:
         return BOTAN_FFI_ERROR_NOT_IMPLEMENTED;

      case Botan::ErrorType::HttpError:
         return BOTAN_FFI_ERROR_HTTP_ERROR;
      case Botan::ErrorType::TLSError:
         return BOTAN_FFI_ERROR_TLS_ERROR;
      case Botan::ErrorType::RoughtimeError:
         return BOTAN_FFI_ERROR_ROUGHTIME_ERROR;
   }

   return BOTAN_FFI_ERROR_UNKNOWN_ERROR;
}

}  // namespace

int ffi_guard_thunk(const char* func_name, const std::function<int()>& thunk) {
   g_last_exception_what.clear();

   try {
      return thunk();
   } catch(std::bad_alloc&) {
      return ffi_error_exception_thrown(func_name, "bad_alloc", BOTAN_FFI_ERROR_OUT_OF_MEMORY);
   } catch(Botan_FFI::FFI_Error& e) {
      return ffi_error_exception_thrown(func_name, e.what(), e.error_code());
   } catch(Botan::Exception& e) {
      return ffi_error_exception_thrown(func_name, e.what(), ffi_map_error_type(e.error_type()));
   } catch(std::exception& e) {
      return ffi_error_exception_thrown(func_name, e.what());
   } catch(...) {
      return ffi_error_exception_thrown(func_name, "unknown exception");
   }
}

}  // namespace Botan_FFI

extern "C" {

using namespace Botan_FFI;

const char* botan_error_last_exception_message() {
   return g_last_exception_what.c_str();
}

const char* botan_error_description(int err) {
   switch(err) {
      case BOTAN_FFI_SUCCESS:
         return "OK";

      case BOTAN_FFI_INVALID_VERIFIER:
         return "Invalid verifier";

      case BOTAN_FFI_ERROR_INVALID_INPUT:
         return "Invalid input";

      case BOTAN_FFI_ERROR_BAD_MAC:
         return "Invalid authentication code";

      case BOTAN_FFI_ERROR_NO_VALUE:
         return "No value available";

      case BOTAN_FFI_ERROR_INSUFFICIENT_BUFFER_SPACE:
         return "Insufficient buffer space";

      case BOTAN_FFI_ERROR_STRING_CONVERSION_ERROR:
         return "String conversion error";

      case BOTAN_FFI_ERROR_EXCEPTION_THROWN:
         return "Exception thrown";

      case BOTAN_FFI_ERROR_OUT_OF_MEMORY:
         return "Out of memory";

      case BOTAN_FFI_ERROR_SYSTEM_ERROR:
         return "Error while calling system API";

      case BOTAN_FFI_ERROR_INTERNAL_ERROR:
         return "Internal error";

      case BOTAN_FFI_ERROR_BAD_FLAG:
         return "Bad flag";

      case BOTAN_FFI_ERROR_NULL_POINTER:
         return "Null pointer argument";

      case BOTAN_FFI_ERROR_BAD_PARAMETER:
         return "Bad parameter";

      case BOTAN_FFI_ERROR_KEY_NOT_SET:
         return "Key not set on object";

      case BOTAN_FFI_ERROR_INVALID_KEY_LENGTH:
         return "Invalid key length";

      case BOTAN_FFI_ERROR_INVALID_OBJECT_STATE:
         return "Invalid object state";

      case BOTAN_FFI_ERROR_NOT_IMPLEMENTED:
         return "Not implemented";

      case BOTAN_FFI_ERROR_INVALID_OBJECT:
         return "Invalid object handle";

      case BOTAN_FFI_ERROR_TLS_ERROR:
         return "TLS error";

      case BOTAN_FFI_ERROR_HTTP_ERROR:
         return "HTTP error";

      case BOTAN_FFI_ERROR_UNKNOWN_ERROR:
         return "Unknown error";

      default:
         return "Unknown error";
   }
}

/*
* Versioning
*/
uint32_t botan_ffi_api_version() {
   return BOTAN_HAS_FFI;
}

int botan_ffi_supports_api(uint32_t api_version) {
   // This is the API introduced in 3.8
   if(api_version == 20250506) {
      return BOTAN_FFI_SUCCESS;
   }

   // This is the API introduced in 3.4
   if(api_version == 20240408) {
      return BOTAN_FFI_SUCCESS;
   }

   // This is the API introduced in 3.2
   if(api_version == 20231009) {
      return BOTAN_FFI_SUCCESS;
   }

   // This is the API introduced in 3.1
   if(api_version == 20230711) {
      return BOTAN_FFI_SUCCESS;
   }

   // This is the API introduced in 3.0
   if(api_version == 20230403) {
      return BOTAN_FFI_SUCCESS;
   }

   // This is the API introduced in 2.18
   if(api_version == 20210220) {
      return BOTAN_FFI_SUCCESS;
   }

   // This is the API introduced in 2.13
   if(api_version == 20191214) {
      return BOTAN_FFI_SUCCESS;
   }

   // This is the API introduced in 2.8
   if(api_version == 20180713) {
      return BOTAN_FFI_SUCCESS;
   }

   // This is the API introduced in 2.3
   if(api_version == 20170815) {
      return BOTAN_FFI_SUCCESS;
   }

   // This is the API introduced in 2.1
   if(api_version == 20170327) {
      return BOTAN_FFI_SUCCESS;
   }

   // This is the API introduced in 2.0
   if(api_version == 20150515) {
      return BOTAN_FFI_SUCCESS;
   }

   // Something else:
   return -1;
}

const char* botan_version_string() {
   return Botan::version_cstr();
}

uint32_t botan_version_major() {
   return Botan::version_major();
}

uint32_t botan_version_minor() {
   return Botan::version_minor();
}

uint32_t botan_version_patch() {
   return Botan::version_patch();
}

uint32_t botan_version_datestamp() {
   return Botan::version_datestamp();
}

int botan_constant_time_compare(const uint8_t* x, const uint8_t* y, size_t len) {
   auto same = Botan::CT::is_equal(x, y, len);
   // Return 0 if same or -1 otherwise
   return static_cast<int>(same.select(1, 0)) - 1;
}

int botan_same_mem(const uint8_t* x, const uint8_t* y, size_t len) {
   return botan_constant_time_compare(x, y, len);
}

int botan_scrub_mem(void* mem, size_t bytes) {
   Botan::secure_scrub_memory(mem, bytes);
   return BOTAN_FFI_SUCCESS;
}

int botan_hex_encode(const uint8_t* in, size_t len, char* out, uint32_t flags) {
   return ffi_guard_thunk(__func__, [=]() -> int {
      const bool uppercase = (flags & BOTAN_FFI_HEX_LOWER_CASE) == 0;
      Botan::hex_encode(out, in, len, uppercase);
      return BOTAN_FFI_SUCCESS;
   });
}

int botan_hex_decode(const char* hex_str, size_t in_len, uint8_t* out, size_t* out_len) {
   return ffi_guard_thunk(__func__, [=]() -> int {
      const std::vector<uint8_t> bin = Botan::hex_decode(hex_str, in_len);
      return Botan_FFI::write_vec_output(out, out_len, bin);
   });
}

int botan_base64_encode(const uint8_t* in, size_t len, char* out, size_t* out_len) {
   return ffi_guard_thunk(__func__, [=]() -> int {
      const std::string base64 = Botan::base64_encode(in, len);
      return Botan_FFI::write_str_output(out, out_len, base64);
   });
}

int botan_base64_decode(const char* base64_str, size_t in_len, uint8_t* out, size_t* out_len) {
   return ffi_guard_thunk(__func__, [=]() -> int {
      if(*out_len < Botan::base64_decode_max_output(in_len)) {
         *out_len = Botan::base64_decode_max_output(in_len);
         return BOTAN_FFI_ERROR_INSUFFICIENT_BUFFER_SPACE;
      }

      *out_len = Botan::base64_decode(out, std::string(base64_str, in_len));
      return BOTAN_FFI_SUCCESS;
   });
}
}

1	/*
2	* (C) 2015,2017 Jack Lloyd
3	*
4	* Botan is released under the Simplified BSD License (see license.txt)
5	*/
6
7	#include <botan/ffi.h>
8
9	#include <botan/base64.h>
10	#include <botan/hex.h>
11	#include <botan/mem_ops.h>
12	#include <botan/version.h>
13	#include <botan/internal/ct_utils.h>
14	#include <botan/internal/ffi_util.h>
15	#include <cstdio>
16	#include <cstdlib>
17
18	#if defined(BOTAN_HAS_OS_UTILS)
19	#include <botan/internal/os_utils.h>
20	#endif
21
22	namespace Botan_FFI {
23
24	namespace {
25
26	// NOLINTNEXTLINE(*-avoid-non-const-global-variables)
27	thread_local std::string g_last_exception_what;	96,243✔
28
29	} // namespace
30
31	int ffi_error_exception_thrown(const char* func_name, const char* exn, int rc) {	15✔
32	g_last_exception_what.assign(exn);	15✔
33
34	#if defined(BOTAN_HAS_OS_UTILS)
35	std::string val;	15✔
36	if(Botan::OS::read_env_variable(val, "BOTAN_FFI_PRINT_EXCEPTIONS") == true && !val.empty()) {	15✔
37	static_cast<void>(std::fprintf(stderr, "in %s exception '%s' returning %d\n", func_name, exn, rc));	×
38	}
39	#endif
40
41	return rc;	15✔
42	}	15✔
43
44	int botan_view_str_bounce_fn(botan_view_ctx vctx, const char* str, size_t len) {	68✔
45	return botan_view_bin_bounce_fn(vctx, reinterpret_cast<const uint8_t*>(str), len);	68✔
46	}
47
48	int botan_view_bin_bounce_fn(botan_view_ctx vctx, const uint8_t* buf, size_t len) {	155✔
49	if(vctx == nullptr \|\| buf == nullptr) {	155✔
50	return BOTAN_FFI_ERROR_NULL_POINTER;
51	}
52
53	botan_view_bounce_struct* ctx = static_cast<botan_view_bounce_struct*>(vctx);	155✔
54
55	const size_t avail = *ctx->out_len;	155✔
56	*ctx->out_len = len;	155✔
57
58	if(avail < len \|\| ctx->out_ptr == nullptr) {	155✔
59	if(ctx->out_ptr) {	72✔
60	Botan::clear_mem(ctx->out_ptr, avail);	×
61	}
62	return BOTAN_FFI_ERROR_INSUFFICIENT_BUFFER_SPACE;	72✔
63	} else {
64	Botan::copy_mem(ctx->out_ptr, buf, len);	83✔
65	return BOTAN_FFI_SUCCESS;	83✔
66	}
67	}
68
69	namespace {
70
71	int ffi_map_error_type(Botan::ErrorType err) {	9✔
72	switch(err) {	9✔
73	case Botan::ErrorType::Unknown:
74	return BOTAN_FFI_ERROR_UNKNOWN_ERROR;
75
76	case Botan::ErrorType::SystemError:	×
77	case Botan::ErrorType::IoError:	×
78	case Botan::ErrorType::Pkcs11Error:	×
79	case Botan::ErrorType::CommonCryptoError:	×
80	case Botan::ErrorType::ZlibError:	×
81	case Botan::ErrorType::Bzip2Error:	×
82	case Botan::ErrorType::LzmaError:	×
83	case Botan::ErrorType::DatabaseError:	×
84	return BOTAN_FFI_ERROR_SYSTEM_ERROR;	×
85
86	case Botan::ErrorType::TPMError:	×
87	return BOTAN_FFI_ERROR_TPM_ERROR;	×
88
89	case Botan::ErrorType::NotImplemented:
90	return BOTAN_FFI_ERROR_NOT_IMPLEMENTED;
91	case Botan::ErrorType::OutOfMemory:	×
92	return BOTAN_FFI_ERROR_OUT_OF_MEMORY;	×
93	case Botan::ErrorType::InternalError:	×
94	return BOTAN_FFI_ERROR_INTERNAL_ERROR;	×
95	case Botan::ErrorType::InvalidObjectState:	2✔
96	return BOTAN_FFI_ERROR_INVALID_OBJECT_STATE;	2✔
97	case Botan::ErrorType::KeyNotSet:	2✔
98	return BOTAN_FFI_ERROR_KEY_NOT_SET;	2✔
99	case Botan::ErrorType::InvalidArgument:	2✔
100	case Botan::ErrorType::InvalidNonceLength:	2✔
101	return BOTAN_FFI_ERROR_BAD_PARAMETER;	2✔
102
103	case Botan::ErrorType::EncodingFailure:	1✔
104	case Botan::ErrorType::DecodingFailure:	1✔
105	return BOTAN_FFI_ERROR_INVALID_INPUT;	1✔
106
107	case Botan::ErrorType::InvalidTag:	×
108	return BOTAN_FFI_ERROR_BAD_MAC;	×
109
110	case Botan::ErrorType::InvalidKeyLength:	×
111	return BOTAN_FFI_ERROR_INVALID_KEY_LENGTH;	×
112	case Botan::ErrorType::LookupError:
113	return BOTAN_FFI_ERROR_NOT_IMPLEMENTED;
114
115	case Botan::ErrorType::HttpError:	×
116	return BOTAN_FFI_ERROR_HTTP_ERROR;	×
117	case Botan::ErrorType::TLSError:	×
118	return BOTAN_FFI_ERROR_TLS_ERROR;	×
119	case Botan::ErrorType::RoughtimeError:	×
120	return BOTAN_FFI_ERROR_ROUGHTIME_ERROR;	×
121	}
122
123	return BOTAN_FFI_ERROR_UNKNOWN_ERROR;
124	}
125
126	} // namespace
127
128	int ffi_guard_thunk(const char* func_name, const std::function<int()>& thunk) {	96,223✔
129	g_last_exception_what.clear();	96,223✔
130
131	try {	96,223✔
132	return thunk();	192,446✔
133	} catch(std::bad_alloc&) {	15✔
134	return ffi_error_exception_thrown(func_name, "bad_alloc", BOTAN_FFI_ERROR_OUT_OF_MEMORY);	×
135	} catch(Botan_FFI::FFI_Error& e) {	6✔
136	return ffi_error_exception_thrown(func_name, e.what(), e.error_code());	6✔
137	} catch(Botan::Exception& e) {	15✔
138	return ffi_error_exception_thrown(func_name, e.what(), ffi_map_error_type(e.error_type()));	9✔
139	} catch(std::exception& e) {	9✔
140	return ffi_error_exception_thrown(func_name, e.what());	×
141	} catch(...) {	×
142	return ffi_error_exception_thrown(func_name, "unknown exception");	×
143	}	×
144	}
145
146	} // namespace Botan_FFI
147
148	extern "C" {
149
150	using namespace Botan_FFI;
151
152	const char* botan_error_last_exception_message() {	5✔
153	return g_last_exception_what.c_str();	5✔
154	}
155
156	const char* botan_error_description(int err) {	155✔
157	switch(err) {	155✔
158	case BOTAN_FFI_SUCCESS:
159	return "OK";
160
161	case BOTAN_FFI_INVALID_VERIFIER:	1✔
162	return "Invalid verifier";	1✔
163
164	case BOTAN_FFI_ERROR_INVALID_INPUT:	2✔
165	return "Invalid input";	2✔
166
167	case BOTAN_FFI_ERROR_BAD_MAC:	1✔
168	return "Invalid authentication code";	1✔
169
170	case BOTAN_FFI_ERROR_NO_VALUE:	2✔
171	return "No value available";	2✔
172
173	case BOTAN_FFI_ERROR_INSUFFICIENT_BUFFER_SPACE:	1✔
174	return "Insufficient buffer space";	1✔
175
176	case BOTAN_FFI_ERROR_STRING_CONVERSION_ERROR:	1✔
177	return "String conversion error";	1✔
178
179	case BOTAN_FFI_ERROR_EXCEPTION_THROWN:	1✔
180	return "Exception thrown";	1✔
181
182	case BOTAN_FFI_ERROR_OUT_OF_MEMORY:	1✔
183	return "Out of memory";	1✔
184
185	case BOTAN_FFI_ERROR_SYSTEM_ERROR:	1✔
186	return "Error while calling system API";	1✔
187
188	case BOTAN_FFI_ERROR_INTERNAL_ERROR:	1✔
189	return "Internal error";	1✔
190
191	case BOTAN_FFI_ERROR_BAD_FLAG:	1✔
192	return "Bad flag";	1✔
193
194	case BOTAN_FFI_ERROR_NULL_POINTER:	1✔
195	return "Null pointer argument";	1✔
196
197	case BOTAN_FFI_ERROR_BAD_PARAMETER:	1✔
198	return "Bad parameter";	1✔
199
200	case BOTAN_FFI_ERROR_KEY_NOT_SET:	1✔
201	return "Key not set on object";	1✔
202
203	case BOTAN_FFI_ERROR_INVALID_KEY_LENGTH:	1✔
204	return "Invalid key length";	1✔
205
206	case BOTAN_FFI_ERROR_INVALID_OBJECT_STATE:	1✔
207	return "Invalid object state";	1✔
208
209	case BOTAN_FFI_ERROR_NOT_IMPLEMENTED:	4✔
210	return "Not implemented";	4✔
211
212	case BOTAN_FFI_ERROR_INVALID_OBJECT:	1✔
213	return "Invalid object handle";	1✔
214
215	case BOTAN_FFI_ERROR_TLS_ERROR:	1✔
216	return "TLS error";	1✔
217
218	case BOTAN_FFI_ERROR_HTTP_ERROR:	1✔
219	return "HTTP error";	1✔
220
221	case BOTAN_FFI_ERROR_UNKNOWN_ERROR:
222	return "Unknown error";
223
224	default:
225	return "Unknown error";
226	}
227	}
228
229	/*
230	* Versioning
231	*/
232	uint32_t botan_ffi_api_version() {	4✔
233	return BOTAN_HAS_FFI;	4✔
234	}
235
236	int botan_ffi_supports_api(uint32_t api_version) {	7✔
237	// This is the API introduced in 3.8
238	if(api_version == 20250506) {	7✔
239	return BOTAN_FFI_SUCCESS;
240	}
241
242	// This is the API introduced in 3.4
243	if(api_version == 20240408) {	5✔
244	return BOTAN_FFI_SUCCESS;
245	}
246
247	// This is the API introduced in 3.2
248	if(api_version == 20231009) {	5✔
249	return BOTAN_FFI_SUCCESS;
250	}
251
252	// This is the API introduced in 3.1
253	if(api_version == 20230711) {	5✔
254	return BOTAN_FFI_SUCCESS;
255	}
256
257	// This is the API introduced in 3.0
258	if(api_version == 20230403) {	5✔
259	return BOTAN_FFI_SUCCESS;
260	}
261
262	// This is the API introduced in 2.18
263	if(api_version == 20210220) {	5✔
264	return BOTAN_FFI_SUCCESS;
265	}
266
267	// This is the API introduced in 2.13
268	if(api_version == 20191214) {	5✔
269	return BOTAN_FFI_SUCCESS;
270	}
271
272	// This is the API introduced in 2.8
273	if(api_version == 20180713) {	5✔
274	return BOTAN_FFI_SUCCESS;
275	}
276
277	// This is the API introduced in 2.3
278	if(api_version == 20170815) {	4✔
279	return BOTAN_FFI_SUCCESS;
280	}
281
282	// This is the API introduced in 2.1
283	if(api_version == 20170327) {	3✔
284	return BOTAN_FFI_SUCCESS;
285	}
286
287	// This is the API introduced in 2.0
288	if(api_version == 20150515) {	2✔
289	return BOTAN_FFI_SUCCESS;	1✔
290	}
291
292	// Something else:
293	return -1;
294	}
295
296	const char* botan_version_string() {	2✔
297	return Botan::version_cstr();	2✔
298	}
299
300	uint32_t botan_version_major() {	2✔
301	return Botan::version_major();	2✔
302	}
303
304	uint32_t botan_version_minor() {	2✔
305	return Botan::version_minor();	2✔
306	}
307
308	uint32_t botan_version_patch() {	1✔
309	return Botan::version_patch();	1✔
310	}
311
312	uint32_t botan_version_datestamp() {	1✔
313	return Botan::version_datestamp();	1✔
314	}
315
316	int botan_constant_time_compare(const uint8_t* x, const uint8_t* y, size_t len) {	28✔
317	auto same = Botan::CT::is_equal(x, y, len);	28✔
318	// Return 0 if same or -1 otherwise
319	return static_cast<int>(same.select(1, 0)) - 1;	28✔
320	}
321
322	int botan_same_mem(const uint8_t* x, const uint8_t* y, size_t len) {	×
323	return botan_constant_time_compare(x, y, len);	×
324	}
325
326	int botan_scrub_mem(void* mem, size_t bytes) {	1✔
327	Botan::secure_scrub_memory(mem, bytes);	1✔
328	return BOTAN_FFI_SUCCESS;	1✔
329	}
330
331	int botan_hex_encode(const uint8_t* in, size_t len, char* out, uint32_t flags) {	3✔
332	return ffi_guard_thunk(__func__, [=]() -> int {	3✔
333	const bool uppercase = (flags & BOTAN_FFI_HEX_LOWER_CASE) == 0;	3✔
334	Botan::hex_encode(out, in, len, uppercase);	3✔
335	return BOTAN_FFI_SUCCESS;	3✔
336	});	3✔
337	}
338
339	int botan_hex_decode(const char* hex_str, size_t in_len, uint8_t* out, size_t* out_len) {	2✔
340	return ffi_guard_thunk(__func__, [=]() -> int {	2✔
341	const std::vector<uint8_t> bin = Botan::hex_decode(hex_str, in_len);	2✔
342	return Botan_FFI::write_vec_output(out, out_len, bin);	2✔
343	});	4✔
344	}
345
346	int botan_base64_encode(const uint8_t* in, size_t len, char* out, size_t* out_len) {	2✔
347	return ffi_guard_thunk(__func__, [=]() -> int {	2✔
348	const std::string base64 = Botan::base64_encode(in, len);	2✔
349	return Botan_FFI::write_str_output(out, out_len, base64);	2✔
350	});	4✔
351	}
352
353	int botan_base64_decode(const char* base64_str, size_t in_len, uint8_t* out, size_t* out_len) {	2✔
354	return ffi_guard_thunk(__func__, [=]() -> int {	2✔
355	if(*out_len < Botan::base64_decode_max_output(in_len)) {	2✔
356	*out_len = Botan::base64_decode_max_output(in_len);	1✔
357	return BOTAN_FFI_ERROR_INSUFFICIENT_BUFFER_SPACE;	1✔
358	}
359
360	*out_len = Botan::base64_decode(out, std::string(base64_str, in_len));	1✔
361	return BOTAN_FFI_SUCCESS;	1✔
362	});	2✔
363	}
364	}

randombit / botan / 13481121531

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