1 /*---------------------------------------------------------------------\
3 | |__ / \ / / . \ . \ |
8 \---------------------------------------------------------------------*/
9 /** \file zypp/Digest.cc
11 * \todo replace by Blocxx
15 #include <cstdio> // snprintf
16 #include <openssl/evp.h>
17 #include <openssl/conf.h>
18 #include <openssl/engine.h>
25 #ifdef DIGEST_TESTSUITE
29 #include "zypp/Digest.h"
30 #include "zypp/base/PtrTypes.h"
34 bool DigestReport::askUserToAcceptNoDigest( const zypp::Pathname &file )
37 bool DigestReport::askUserToAccepUnknownDigest( const Pathname &file, const std::string &name )
40 bool DigestReport::askUserToAcceptWrongDigest( const Pathname &file, const std::string &requested, const std::string &found )
44 const std::string & Digest::md5()
45 { static std::string _type( "md5" ); return _type; }
47 const std::string & Digest::sha1()
48 { static std::string _type( "sha1" ); return _type; }
50 const std::string & Digest::sha224()
51 { static std::string _type( "sha224" ); return _type; }
53 const std::string & Digest::sha256()
54 { static std::string _type( "sha256" ); return _type; }
56 const std::string & Digest::sha384()
57 { static std::string _type( "sha384" ); return _type; }
59 const std::string & Digest::sha512()
60 { static std::string _type( "sha512" ); return _type; }
66 const P& operator=(const P& p);
69 typedef zypp::shared_ptr<EVP_MD_CTX> EvpDataPtr;
76 unsigned char md_value[EVP_MAX_MD_SIZE];
80 static bool openssl_digests_added;
84 inline bool maybeInit();
85 inline void cleanup();
91 bool Digest::P::openssl_digests_added = false;
104 bool Digest::P::maybeInit()
106 if(!openssl_digests_added)
108 OPENSSL_config(NULL);
109 ENGINE_load_builtin_engines();
110 ENGINE_register_all_complete();
111 OpenSSL_add_all_digests();
112 openssl_digests_added = true;
117 md = EVP_get_digestbyname(name.c_str());
121 #if OPENSSL_VERSION_NUMBER < 0x10100000L
122 EvpDataPtr tmp_mdctx(EVP_MD_CTX_create(), EVP_MD_CTX_destroy);
124 EvpDataPtr tmp_mdctx(EVP_MD_CTX_new(), EVP_MD_CTX_free);
129 if (!EVP_DigestInit_ex(tmp_mdctx.get(), md, NULL)) {
134 ::memset(md_value, 0, sizeof(md_value));
136 mdctx.swap(tmp_mdctx);
141 void Digest::P::cleanup()
147 Digest::Digest() : _dp(new P())
156 bool Digest::create(const std::string& name)
158 if(name.empty()) return false;
165 return _dp->maybeInit();
168 const std::string& Digest::name()
179 (void)EVP_DigestFinal_ex(_dp->mdctx.get(), _dp->md_value, &_dp->md_len);
180 _dp->finalized = true;
182 if(!EVP_DigestInit_ex(_dp->mdctx.get(), _dp->md, NULL))
184 _dp->finalized = false;
188 std::string Digest::digest()
190 return digestVectorToString( digestVector() );
193 string Digest::digestVectorToString(const std::vector<unsigned char> &vec)
196 return std::string();
198 std::vector<char> resData ( vec.size()*2 + 1, '\0' );
199 char *mdtxt = &resData[0];
200 for(unsigned i = 0; i < vec.size(); ++i)
202 ::snprintf( mdtxt+(i*2), 3, "%02hhx", vec[i]);
204 return std::string( resData.data() );
207 std::vector<unsigned char> Digest::digestVector()
209 std::vector<unsigned char> r;
210 if(!_dp->maybeInit())
215 if(!EVP_DigestFinal_ex(_dp->mdctx.get(), _dp->md_value, &_dp->md_len))
217 _dp->finalized = true;
219 r.reserve(_dp->md_len);
220 for(unsigned i = 0; i < _dp->md_len; ++i)
221 r.push_back(_dp->md_value[i]);
225 bool Digest::update(const char* bytes, size_t len)
232 if(!_dp->maybeInit())
238 if(!_dp->maybeInit())
242 if(!EVP_DigestUpdate(_dp->mdctx.get(), reinterpret_cast<const unsigned char*>(bytes), len))
248 bool Digest::update(istream &is, size_t bufsize)
258 is.read(buf, bufsize);
259 readed = is.gcount();
260 if(readed && !update(buf, readed))
267 std::string Digest::digest(const std::string& name, std::istream& is, size_t bufsize)
269 if(name.empty() || !is)
273 if(!digest.create(name))
276 if ( !digest.update( is, bufsize ))
279 return digest.digest();
282 std::string Digest::digest( const std::string & name, const std::string & input, size_t bufsize )
284 istringstream is( input );
285 return digest( name, is, bufsize );
288 #ifdef DIGEST_TESTSUITE
289 int main(int argc, char *argv[])
291 bool openssl = false;
294 if(argc > 1 && string(argv[argpos]) == "--openssl")
300 if(argc - argpos < 2)
302 cerr << "Usage: " << argv[0] << " <DIGESTNAME> <FILE>" << endl;
306 const char* digestname = argv[argpos++];
307 const char* fn = argv[argpos++];
311 string digest = Digest::digest(digestname, file);
314 cout << digestname << "(" << fn << ")= " << digest << endl;
316 cout << digest << " " << fn << endl;