/src/Botan-3.4.0/src/lib/ffi/ffi_hash.cpp
Line | Count | Source (jump to first uncovered line) |
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/hash.h> |
10 | | #include <botan/internal/ffi_util.h> |
11 | | |
12 | | extern "C" { |
13 | | |
14 | | using namespace Botan_FFI; |
15 | | |
16 | | BOTAN_FFI_DECLARE_STRUCT(botan_hash_struct, Botan::HashFunction, 0x1F0A4F84); |
17 | | |
18 | 0 | int botan_hash_init(botan_hash_t* hash, const char* hash_name, uint32_t flags) { |
19 | 0 | return ffi_guard_thunk(__func__, [=]() -> int { |
20 | 0 | if(hash == nullptr || hash_name == nullptr || *hash_name == 0) { |
21 | 0 | return BOTAN_FFI_ERROR_NULL_POINTER; |
22 | 0 | } |
23 | 0 | if(flags != 0) { |
24 | 0 | return BOTAN_FFI_ERROR_BAD_FLAG; |
25 | 0 | } |
26 | | |
27 | 0 | auto h = Botan::HashFunction::create(hash_name); |
28 | 0 | if(h == nullptr) { |
29 | 0 | return BOTAN_FFI_ERROR_NOT_IMPLEMENTED; |
30 | 0 | } |
31 | | |
32 | 0 | *hash = new botan_hash_struct(std::move(h)); |
33 | 0 | return BOTAN_FFI_SUCCESS; |
34 | 0 | }); |
35 | 0 | } |
36 | | |
37 | 0 | int botan_hash_destroy(botan_hash_t hash) { |
38 | 0 | return BOTAN_FFI_CHECKED_DELETE(hash); |
39 | 0 | } |
40 | | |
41 | 0 | int botan_hash_output_length(botan_hash_t hash, size_t* out) { |
42 | 0 | if(out == nullptr) { |
43 | 0 | return BOTAN_FFI_ERROR_NULL_POINTER; |
44 | 0 | } |
45 | 0 | return BOTAN_FFI_VISIT(hash, [=](const auto& h) { *out = h.output_length(); }); |
46 | 0 | } |
47 | | |
48 | 0 | int botan_hash_block_size(botan_hash_t hash, size_t* out) { |
49 | 0 | if(out == nullptr) { |
50 | 0 | return BOTAN_FFI_ERROR_NULL_POINTER; |
51 | 0 | } |
52 | 0 | return BOTAN_FFI_VISIT(hash, [=](const auto& h) { *out = h.hash_block_size(); }); |
53 | 0 | } |
54 | | |
55 | 0 | int botan_hash_clear(botan_hash_t hash) { |
56 | 0 | return BOTAN_FFI_VISIT(hash, [](auto& h) { h.clear(); }); |
57 | 0 | } |
58 | | |
59 | 0 | int botan_hash_update(botan_hash_t hash, const uint8_t* buf, size_t len) { |
60 | 0 | if(len == 0) { |
61 | 0 | return 0; |
62 | 0 | } |
63 | | |
64 | 0 | if(buf == nullptr) { |
65 | 0 | return BOTAN_FFI_ERROR_NULL_POINTER; |
66 | 0 | } |
67 | | |
68 | 0 | return BOTAN_FFI_VISIT(hash, [=](auto& h) { h.update(buf, len); }); |
69 | 0 | } |
70 | | |
71 | 0 | int botan_hash_final(botan_hash_t hash, uint8_t out[]) { |
72 | 0 | if(out == nullptr) { |
73 | 0 | return BOTAN_FFI_ERROR_NULL_POINTER; |
74 | 0 | } |
75 | 0 | return BOTAN_FFI_VISIT(hash, [=](auto& h) { h.final(out); }); |
76 | 0 | } |
77 | | |
78 | 0 | int botan_hash_copy_state(botan_hash_t* dest, const botan_hash_t source) { |
79 | 0 | return BOTAN_FFI_VISIT(source, [=](const auto& src) { *dest = new botan_hash_struct(src.copy_state()); }); |
80 | 0 | } |
81 | | |
82 | 0 | int botan_hash_name(botan_hash_t hash, char* name, size_t* name_len) { |
83 | 0 | if(name_len == nullptr) { |
84 | 0 | return BOTAN_FFI_ERROR_NULL_POINTER; |
85 | 0 | } |
86 | | |
87 | 0 | return BOTAN_FFI_VISIT(hash, [=](const auto& h) { return write_str_output(name, name_len, h.name()); }); |
88 | 0 | } |
89 | | } |