OpenCoverage

b2sum.c

Absolute File Name:

/home/opencoverage/opencoverage/guest-scripts/coreutils/src/src/blake2/b2sum.c

Source code

Switch to Preprocessed file

Line Source Count

1 /* -

2 BLAKE2 reference source code package - b2sum tool -

3 -

5 terms of the CC0, the OpenSSL Licence, or the Apache Public License 2.0, at -

6 your option. The terms of these licenses can be found at: -

7 -

8 - CC0 1.0 Universal : https://creativecommons.org/publicdomain/zero/1.0 -

9 - OpenSSL license : https://www.openssl.org/source/license.html -

10 - Apache 2.0 : https://www.apache.org/licenses/LICENSE-2.0 -

11 -

12 More information about the BLAKE2 hash function can be found at -

13 https://blake2.net. -

14 */ -

15 -

16 #include <stdio.h> -

17 #include <stdlib.h> -

18 #include <string.h> -

19 #include <assert.h> -

20 #include <errno.h> -

21 -

22 #include <ctype.h> -

23 #include <unistd.h> -

24 #include <getopt.h> -

25 #include <stdbool.h> -

26 -

27 #include "blake2.h" -

28 -

29 /* This will help compatibility with coreutils */ -

30 int blake2b_stream( FILE *stream, void *resstream, size_t outbytes ) -

31 { -

32 int ret = -1; -

33 size_t sum, n; -

34 blake2b_state S[1]; -

35 static const size_t buffer_length = 32768; -

36 uint8_t *buffer = ( uint8_t * )malloc( buffer_length ); -

37 -

if( !buffer ) return -1;

never executed: return -1;

!buffer	Description
TRUE	never evaluated
FALSE	evaluated 38 times by 1 test Evaluated by: b2sum

0-38

39 -

40 blake2b_init( S, outbytes ); -

41 -

42 while( 1 ) -

43 { -

44 sum = 0; -

45 -

46 while( 1 ) -

47 { -

48 n = fread( buffer + sum, 1, buffer_length - sum, stream ); -

49 sum += n; -

50 -

if( buffer_length == sum )

buffer_length == sum	Description
TRUE	never evaluated
FALSE	evaluated 38 times by 1 test Evaluated by: b2sum

0-38

break;

never executed: break;

53 -

if( 0 == n )

0 == n	Description
TRUE	evaluated 6 times by 1 test Evaluated by: b2sum
FALSE	evaluated 32 times by 1 test Evaluated by: b2sum

6-32

55 { -

if( ferror( stream ) )

ferror( stream )	Description
TRUE	never evaluated
FALSE	evaluated 6 times by 1 test Evaluated by: b2sum

0-6

goto cleanup_buffer;

never executed: goto cleanup_buffer;

58 -

goto final_process;

executed 6 times by 1 test: goto final_process;

Executed by:

b2sum

60 } -

61 -

if( feof( stream ) )

feof( stream )	Description
TRUE	evaluated 32 times by 1 test Evaluated by: b2sum
FALSE	never evaluated

0-32

goto final_process;

executed 32 times by 1 test: goto final_process;

Executed by:

b2sum

}

never executed: end of block

65 -

66 blake2b_update( S, buffer, buffer_length ); -

}

never executed: end of block

68 -

final_process:;

code before this statement never executed: final_process:

70 -

if( sum > 0 ) blake2b_update( S, buffer, sum );

executed 32 times by 1 test: blake2b_update( S, buffer, sum );

Executed by:

b2sum

sum > 0	Description
TRUE	evaluated 32 times by 1 test Evaluated by: b2sum
FALSE	evaluated 6 times by 1 test Evaluated by: b2sum

6-32

72 -

73 blake2b_final( S, resstream, outbytes ); -

74 ret = 0; -

cleanup_buffer:

code before this statement executed 38 times by 1 test: cleanup_buffer:

Executed by:

b2sum

76 free( buffer ); -

return ret;

executed 38 times by 1 test: return ret;

Executed by:

b2sum

78 } -

79 -

80 #if 0 -

81 int blake2s_stream( FILE *stream, void *resstream, size_t outbytes ) -

82 { -

83 int ret = -1; -

84 size_t sum, n; -

85 blake2s_state S[1]; -

86 static const size_t buffer_length = 32768; -

87 uint8_t *buffer = ( uint8_t * )malloc( buffer_length ); -

88 -

89 if( !buffer ) return -1; -

90 -

91 blake2s_init( S, outbytes ); -

92 -

93 while( 1 ) -

94 { -

95 sum = 0; -

96 -

97 while( 1 ) -

98 { -

99 n = fread( buffer + sum, 1, buffer_length - sum, stream ); -

100 sum += n; -

101 -

102 if( buffer_length == sum ) -

103 break; -

104 -

105 if( 0 == n ) -

106 { -

107 if( ferror( stream ) ) -

108 goto cleanup_buffer; -

109 -

110 goto final_process; -

111 } -

112 -

113 if( feof( stream ) ) -

114 goto final_process; -

115 } -

116 -

117 blake2s_update( S, buffer, buffer_length ); -

118 } -

119 -

120 final_process:; -

121 -

122 if( sum > 0 ) blake2s_update( S, buffer, sum ); -

123 -

124 blake2s_final( S, resstream, outbytes ); -

125 ret = 0; -

126 cleanup_buffer: -

127 free( buffer ); -

128 return ret; -

129 } -

130 -

131 -

132 int blake2sp_stream( FILE *stream, void *resstream, size_t outbytes ) -

133 { -

134 int ret = -1; -

135 size_t sum, n; -

136 blake2sp_state S[1]; -

137 static const size_t buffer_length = 16 * ( 1UL << 20 ); -

138 uint8_t *buffer = ( uint8_t * )malloc( buffer_length ); -

139 -

140 if( !buffer ) return -1; -

141 -

142 blake2sp_init( S, outbytes ); -

143 -

144 while( 1 ) -

145 { -

146 sum = 0; -

147 -

148 while( 1 ) -

149 { -

150 n = fread( buffer + sum, 1, buffer_length - sum, stream ); -

151 sum += n; -

152 -

153 if( buffer_length == sum ) -

154 break; -

155 -

156 if( 0 == n ) -

157 { -

158 if( ferror( stream ) ) -

159 goto cleanup_buffer; -

160 -

161 goto final_process; -

162 } -

163 -

164 if( feof( stream ) ) -

165 goto final_process; -

166 } -

167 -

168 blake2sp_update( S, buffer, buffer_length ); -

169 } -

170 -

171 final_process:; -

172 -

173 if( sum > 0 ) blake2sp_update( S, buffer, sum ); -

174 -

175 blake2sp_final( S, resstream, outbytes ); -

176 ret = 0; -

177 cleanup_buffer: -

178 free( buffer ); -

179 return ret; -

180 } -

181 -

182 -

183 int blake2bp_stream( FILE *stream, void *resstream, size_t outbytes ) -

184 { -

185 int ret = -1; -

186 size_t sum, n; -

187 blake2bp_state S[1]; -

188 static const size_t buffer_length = 16 * ( 1UL << 20 ); -

189 uint8_t *buffer = ( uint8_t * )malloc( buffer_length ); -

190 -

191 if( !buffer ) return -1; -

192 -

193 blake2bp_init( S, outbytes ); -

194 -

195 while( 1 ) -

196 { -

197 sum = 0; -

198 -

199 while( 1 ) -

200 { -

201 n = fread( buffer + sum, 1, buffer_length - sum, stream ); -

202 sum += n; -

203 -

204 if( buffer_length == sum ) -

205 break; -

206 -

207 if( 0 == n ) -

208 { -

209 if( ferror( stream ) ) -

210 goto cleanup_buffer; -

211 -

212 goto final_process; -

213 } -

214 -

215 if( feof( stream ) ) -

216 goto final_process; -

217 } -

218 -

219 blake2bp_update( S, buffer, buffer_length ); -

220 } -

221 -

222 final_process:; -

223 -

224 if( sum > 0 ) blake2bp_update( S, buffer, sum ); -

225 -

226 blake2bp_final( S, resstream, outbytes ); -

227 ret = 0; -

228 cleanup_buffer: -

229 free( buffer ); -

230 return ret; -

231 } -

232 -

233 typedef int ( *blake2fn )( FILE *, void *, size_t ); -

234 -

235 -

236 static void usage( char **argv, int errcode ) -

237 { -

238 FILE *out = errcode ? stderr : stdout; -

239 fprintf( out, "Usage: %s [OPTION]... [FILE]...\n", argv[0] ); -

240 fprintf( out, "\n" ); -

241 fprintf( out, "With no FILE, or when FILE is -, read standard input.\n" ); -

242 fprintf( out, "\n" ); -

243 fprintf( out, " -a <algo> hash algorithm (blake2b is default): \n" -

244 " [blake2b|blake2s|blake2bp|blake2sp]\n" ); -

245 fprintf( out, " -l <length> digest length in bits, must not exceed the maximum for\n" -

246 " the selected algorithm and must be a multiple of 8\n" ); -

247 fprintf( out, " --tag create a BSD-style checksum\n" ); -

248 fprintf( out, " --help display this help and exit\n" ); -

249 exit( errcode ); -

250 } -

251 -

252 int main( int argc, char **argv ) -

253 { -

254 blake2fn blake2_stream = blake2b_stream; -

255 unsigned long maxbytes = BLAKE2B_OUTBYTES; -

256 const char *algorithm = "BLAKE2b"; -

257 unsigned long outbytes = 0; -

258 unsigned char hash[BLAKE2B_OUTBYTES] = {0}; -

259 bool bsdstyle = false; -

260 int c, i; -

261 opterr = 1; -

262 -

263 while( 1 ) -

264 { -

265 int option_index = 0; -

266 char *end = NULL; -

267 unsigned long outbits; -

268 static struct option long_options[] = { -

269 { "help", no_argument, 0, 0 }, -

270 { "tag", no_argument, 0, 0 }, -

271 { NULL, 0, NULL, 0 } -

272 }; -

273 -

274 c = getopt_long( argc, argv, "a:l:", long_options, &option_index ); -

275 if( c == -1 ) break; -

276 switch( c ) -

277 { -

278 case 'a': -

279 if( 0 == strcmp( optarg, "blake2b" ) ) -

280 { -

281 blake2_stream = blake2b_stream; -

282 maxbytes = BLAKE2B_OUTBYTES; -

283 algorithm = "BLAKE2b"; -

284 } -

285 else if ( 0 == strcmp( optarg, "blake2s" ) ) -

286 { -

287 blake2_stream = blake2s_stream; -

288 maxbytes = BLAKE2S_OUTBYTES; -

289 algorithm = "BLAKE2s"; -

290 } -

291 else if ( 0 == strcmp( optarg, "blake2bp" ) ) -

292 { -

293 blake2_stream = blake2bp_stream; -

294 maxbytes = BLAKE2B_OUTBYTES; -

295 algorithm = "BLAKE2bp"; -

296 } -

297 else if ( 0 == strcmp( optarg, "blake2sp" ) ) -

298 { -

299 blake2_stream = blake2sp_stream; -

300 maxbytes = BLAKE2S_OUTBYTES; -

301 algorithm = "BLAKE2sp"; -

302 } -

303 else -

304 { -

305 printf( "Invalid function name: `%s'\n", optarg ); -

306 usage( argv, 111 ); -

307 } -

308 -

309 break; -

310 -

311 case 'l': -

312 outbits = strtoul(optarg, &end, 10); -

313 if( !end || *end != '\0' || outbits % 8 != 0) -

314 { -

315 printf( "Invalid length argument: `%s'\n", optarg); -

316 usage( argv, 111 ); -

317 } -

318 outbytes = outbits / 8; -

319 break; -

320 -

321 case 0: -

322 if( 0 == strcmp( "help", long_options[option_index].name ) ) -

323 usage( argv, 0 ); -

324 else if( 0 == strcmp( "tag", long_options[option_index].name ) ) -

325 bsdstyle = true; -

326 break; -

327 -

328 case '?': -

329 usage( argv, 1 ); -

330 break; -

331 } -

332 } -

333 -

334 if(outbytes > maxbytes) -

335 { -

336 printf( "Invalid length argument: %lu\n", outbytes * 8 ); -

337 printf( "Maximum digest length for %s is %lu\n", algorithm, maxbytes * 8 ); -

338 usage( argv, 111 ); -

339 } -

340 else if( outbytes == 0 ) -

341 outbytes = maxbytes; -

342 -

343 if( optind == argc ) -

344 argv[argc++] = (char *) "-"; -

345 -

346 for( i = optind; i < argc; ++i ) -

347 { -

348 FILE *f = NULL; -

349 if( argv[i][0] == '-' && argv[i][1] == '\0' ) -

350 f = stdin; -

351 else -

352 f = fopen( argv[i], "rb" ); -

353 -

354 if( !f ) -

355 { -

356 fprintf( stderr, "Could not open `%s': %s\n", argv[i], strerror( errno ) ); -

357 continue; -

358 } -

359 -

360 if( blake2_stream( f, hash, outbytes ) < 0 ) -

361 { -

362 fprintf( stderr, "Failed to hash `%s'\n", argv[i] ); -

363 } -

364 else -

365 { -

366 size_t j; -

367 if( bsdstyle ) -

368 { -

369 if( outbytes < maxbytes ) -

370 printf( "%s-%lu (%s) = ", algorithm, outbytes * 8, argv[i] ); -

371 else -

372 printf( "%s (%s) = ", algorithm, argv[i] ); -

373 } -

374 -

375 for( j = 0; j < outbytes; ++j ) -

376 printf( "%02x", hash[j] ); -

377 -

378 if( bsdstyle ) -

379 printf( "\n" ); -

380 else -

381 printf( " %s\n", argv[i] ); -

382 } -

383 -

384 if( f != stdin ) fclose( f ); -

385 } -

386 -

387 return 0; -

388 } -

389 #endif -

Source code

Switch to Preprocessed file

Generated by Squish Coco 4.1.2