1 /*- 2 * Copyright (c) 2009 The NetBSD Foundation, Inc. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to The NetBSD Foundation 6 * by Alistair Crooks (agc (at) NetBSD.org) 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 19 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 20 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 21 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 25 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 27 * POSSIBILITY OF SUCH DAMAGE. 28 */ 29 /* 30 * Copyright (c) 2005-2008 Nominet UK (www.nic.uk) 31 * All rights reserved. 32 * Contributors: Ben Laurie, Rachel Willmer. The Contributors have asserted 33 * their moral rights under the UK Copyright Design and Patents Act 1988 to 34 * be recorded as the authors of this copyright work. 35 * 36 * Licensed under the Apache License, Version 2.0 (the "License"); you may not 37 * use this file except in compliance with the License. 38 * 39 * You may obtain a copy of the License at 40 * http://www.apache.org/licenses/LICENSE-2.0 41 * 42 * Unless required by applicable law or agreed to in writing, software 43 * distributed under the License is distributed on an "AS IS" BASIS, 44 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 45 * 46 * See the License for the specific language governing permissions and 47 * limitations under the License. 48 */ 49 50 /** \file 51 * 52 * Creates printable text strings from packet contents 53 * 54 */ 55 #include "config.h" 56 57 #ifdef HAVE_SYS_CDEFS_H 58 #include <sys/cdefs.h> 59 #endif 60 61 #if defined(__NetBSD__) 62 __COPYRIGHT("@(#) Copyright (c) 2009 The NetBSD Foundation, Inc. All rights reserved."); 63 __RCSID("$NetBSD: packet-show.c,v 1.23 2022/08/26 19:18:38 jhigh Exp $"); 64 #endif 65 66 #include <stdlib.h> 67 #include <string.h> 68 69 #include "packet-show.h" 70 71 #include "netpgpsdk.h" 72 #include "netpgpdefs.h" 73 74 75 /* 76 * Arrays of value->text maps 77 */ 78 79 static pgp_map_t packet_tag_map[] = 80 { 81 {PGP_PTAG_CT_RESERVED, "Reserved"}, 82 {PGP_PTAG_CT_PK_SESSION_KEY, "Public-Key Encrypted Session Key"}, 83 {PGP_PTAG_CT_SIGNATURE, "Signature"}, 84 {PGP_PTAG_CT_SK_SESSION_KEY, "Symmetric-Key Encrypted Session Key"}, 85 {PGP_PTAG_CT_1_PASS_SIG, "One-Pass Signature"}, 86 {PGP_PTAG_CT_SECRET_KEY, "Secret Key"}, 87 {PGP_PTAG_CT_PUBLIC_KEY, "Public Key"}, 88 {PGP_PTAG_CT_SECRET_SUBKEY, "Secret Subkey"}, 89 {PGP_PTAG_CT_COMPRESSED, "Compressed Data"}, 90 {PGP_PTAG_CT_SE_DATA, "Symmetrically Encrypted Data"}, 91 {PGP_PTAG_CT_MARKER, "Marker"}, 92 {PGP_PTAG_CT_LITDATA, "Literal Data"}, 93 {PGP_PTAG_CT_TRUST, "Trust"}, 94 {PGP_PTAG_CT_USER_ID, "User ID"}, 95 {PGP_PTAG_CT_PUBLIC_SUBKEY, "Public Subkey"}, 96 {PGP_PTAG_CT_RESERVED2, "reserved2"}, 97 {PGP_PTAG_CT_RESERVED3, "reserved3"}, 98 {PGP_PTAG_CT_USER_ATTR, "User Attribute"}, 99 {PGP_PTAG_CT_SE_IP_DATA, 100 "Symmetric Encrypted and Integrity Protected Data"}, 101 {PGP_PTAG_CT_MDC, "Modification Detection Code"}, 102 {PGP_PARSER_PTAG, "PGP_PARSER_PTAG"}, 103 {PGP_PTAG_RAW_SS, "PGP_PTAG_RAW_SS"}, 104 {PGP_PTAG_SS_ALL, "PGP_PTAG_SS_ALL"}, 105 {PGP_PARSER_PACKET_END, "PGP_PARSER_PACKET_END"}, 106 {PGP_PTAG_SIG_SUBPKT_BASE, "PGP_PTAG_SIG_SUBPKT_BASE"}, 107 {PGP_PTAG_SS_CREATION_TIME, "SS: Signature Creation Time"}, 108 {PGP_PTAG_SS_EXPIRATION_TIME, "SS: Signature Expiration Time"}, 109 {PGP_PTAG_SS_EXPORT_CERT, "SS: Exportable Certification"}, 110 {PGP_PTAG_SS_TRUST, "SS: Trust Signature"}, 111 {PGP_PTAG_SS_REGEXP, "SS: Regular Expression"}, 112 {PGP_PTAG_SS_REVOCABLE, "SS: Revocable"}, 113 {PGP_PTAG_SS_KEY_EXPIRY, "SS: Key Expiration Time"}, 114 {PGP_PTAG_SS_RESERVED, "SS: Reserved"}, 115 {PGP_PTAG_SS_PREFERRED_SKA, "SS: Preferred Secret Key Algorithm"}, 116 {PGP_PTAG_SS_REVOCATION_KEY, "SS: Revocation Key"}, 117 {PGP_PTAG_SS_ISSUER_KEY_ID, "SS: Issuer Key Id"}, 118 {PGP_PTAG_SS_ISSUER_FINGERPRINT, "SS: Issuer Fingerprint"}, 119 {PGP_PTAG_SS_NOTATION_DATA, "SS: Notation Data"}, 120 {PGP_PTAG_SS_PREFERRED_HASH, "SS: Preferred Hash Algorithm"}, 121 {PGP_PTAG_SS_PREF_COMPRESS, "SS: Preferred Compression Algorithm"}, 122 {PGP_PTAG_SS_KEYSERV_PREFS, "SS: Key Server Preferences"}, 123 {PGP_PTAG_SS_PREF_KEYSERV, "SS: Preferred Key Server"}, 124 {PGP_PTAG_SS_PRIMARY_USER_ID, "SS: Primary User ID"}, 125 {PGP_PTAG_SS_POLICY_URI, "SS: Policy URI"}, 126 {PGP_PTAG_SS_KEY_FLAGS, "SS: Key Flags"}, 127 {PGP_PTAG_SS_SIGNERS_USER_ID, "SS: Signer's User ID"}, 128 {PGP_PTAG_SS_REVOCATION_REASON, "SS: Reason for Revocation"}, 129 {PGP_PTAG_SS_FEATURES, "SS: Features"}, 130 {PGP_PTAG_SS_SIGNATURE_TARGET, "SS: Signature Target"}, 131 {PGP_PTAG_SS_EMBEDDED_SIGNATURE, "SS: Embedded Signature"}, 132 133 {PGP_PTAG_CT_LITDATA_HEADER, "CT: Literal Data Header"}, 134 {PGP_PTAG_CT_LITDATA_BODY, "CT: Literal Data Body"}, 135 {PGP_PTAG_CT_SIGNATURE_HEADER, "CT: Signature Header"}, 136 {PGP_PTAG_CT_SIGNATURE_FOOTER, "CT: Signature Footer"}, 137 {PGP_PTAG_CT_ARMOUR_HEADER, "CT: Armour Header"}, 138 {PGP_PTAG_CT_ARMOUR_TRAILER, "CT: Armour Trailer"}, 139 {PGP_PTAG_CT_SIGNED_CLEARTEXT_HEADER, "CT: Signed Cleartext Header"}, 140 {PGP_PTAG_CT_SIGNED_CLEARTEXT_BODY, "CT: Signed Cleartext Body"}, 141 {PGP_PTAG_CT_SIGNED_CLEARTEXT_TRAILER, "CT: Signed Cleartext Trailer"}, 142 {PGP_PTAG_CT_UNARMOURED_TEXT, "CT: Unarmoured Text"}, 143 {PGP_PTAG_CT_ENCRYPTED_SECRET_KEY, "CT: Encrypted Secret Key"}, 144 {PGP_PTAG_CT_SE_DATA_HEADER, "CT: Sym Encrypted Data Header"}, 145 {PGP_PTAG_CT_SE_DATA_BODY, "CT: Sym Encrypted Data Body"}, 146 {PGP_PTAG_CT_SE_IP_DATA_HEADER, "CT: Sym Encrypted IP Data Header"}, 147 {PGP_PTAG_CT_SE_IP_DATA_BODY, "CT: Sym Encrypted IP Data Body"}, 148 {PGP_PTAG_CT_ENCRYPTED_PK_SESSION_KEY, "CT: Encrypted PK Session Key"}, 149 {PGP_GET_PASSPHRASE, "CMD: Get Secret Key Passphrase"}, 150 {PGP_GET_SECKEY, "CMD: Get Secret Key"}, 151 {PGP_PARSER_ERROR, "PGP_PARSER_ERROR"}, 152 {PGP_PARSER_ERRCODE, "PGP_PARSER_ERRCODE"}, 153 154 {0x00, NULL}, /* this is the end-of-array marker */ 155 }; 156 157 static pgp_map_t ss_type_map[] = 158 { 159 {PGP_PTAG_SS_CREATION_TIME, "Signature Creation Time"}, 160 {PGP_PTAG_SS_EXPIRATION_TIME, "Signature Expiration Time"}, 161 {PGP_PTAG_SS_TRUST, "Trust Signature"}, 162 {PGP_PTAG_SS_REGEXP, "Regular Expression"}, 163 {PGP_PTAG_SS_REVOCABLE, "Revocable"}, 164 {PGP_PTAG_SS_KEY_EXPIRY, "Key Expiration Time"}, 165 {PGP_PTAG_SS_PREFERRED_SKA, "Preferred Symmetric Algorithms"}, 166 {PGP_PTAG_SS_REVOCATION_KEY, "Revocation Key"}, 167 {PGP_PTAG_SS_ISSUER_KEY_ID, "Issuer key ID"}, 168 {PGP_PTAG_SS_ISSUER_FINGERPRINT, "Issuer Fingerprint"}, 169 {PGP_PTAG_SS_NOTATION_DATA, "Notation Data"}, 170 {PGP_PTAG_SS_PREFERRED_HASH, "Preferred Hash Algorithms"}, 171 {PGP_PTAG_SS_PREF_COMPRESS, "Preferred Compression Algorithms"}, 172 {PGP_PTAG_SS_KEYSERV_PREFS, "Key Server Preferences"}, 173 {PGP_PTAG_SS_PREF_KEYSERV, "Preferred Key Server"}, 174 {PGP_PTAG_SS_PRIMARY_USER_ID, "Primary User ID"}, 175 {PGP_PTAG_SS_POLICY_URI, "Policy URI"}, 176 {PGP_PTAG_SS_KEY_FLAGS, "Key Flags"}, 177 {PGP_PTAG_SS_REVOCATION_REASON, "Reason for Revocation"}, 178 {PGP_PTAG_SS_FEATURES, "Features"}, 179 {0x00, NULL}, /* this is the end-of-array marker */ 180 }; 181 182 183 static pgp_map_t ss_rr_code_map[] = 184 { 185 {0x00, "No reason specified"}, 186 {0x01, "Key is superseded"}, 187 {0x02, "Key material has been compromised"}, 188 {0x03, "Key is retired and no longer used"}, 189 {0x20, "User ID information is no longer valid"}, 190 {0x00, NULL}, /* this is the end-of-array marker */ 191 }; 192 193 static pgp_map_t sig_type_map[] = 194 { 195 {PGP_SIG_BINARY, "Signature of a binary document"}, 196 {PGP_SIG_TEXT, "Signature of a canonical text document"}, 197 {PGP_SIG_STANDALONE, "Standalone signature"}, 198 {PGP_CERT_GENERIC, "Generic certification of a User ID and Public Key packet"}, 199 {PGP_CERT_PERSONA, "Personal certification of a User ID and Public Key packet"}, 200 {PGP_CERT_CASUAL, "Casual certification of a User ID and Public Key packet"}, 201 {PGP_CERT_POSITIVE, "Positive certification of a User ID and Public Key packet"}, 202 {PGP_SIG_SUBKEY, "Subkey Binding Signature"}, 203 {PGP_SIG_PRIMARY, "Primary Key Binding Signature"}, 204 {PGP_SIG_DIRECT, "Signature directly on a key"}, 205 {PGP_SIG_REV_KEY, "Key revocation signature"}, 206 {PGP_SIG_REV_SUBKEY, "Subkey revocation signature"}, 207 {PGP_SIG_REV_CERT, "Certification revocation signature"}, 208 {PGP_SIG_TIMESTAMP, "Timestamp signature"}, 209 {PGP_SIG_3RD_PARTY, "Third-Party Confirmation signature"}, 210 {0x00, NULL}, /* this is the end-of-array marker */ 211 }; 212 213 static pgp_map_t pubkey_alg_map[] = 214 { 215 {PGP_PKA_RSA, "RSA (Encrypt or Sign)"}, 216 {PGP_PKA_RSA_ENCRYPT_ONLY, "RSA Encrypt-Only"}, 217 {PGP_PKA_RSA_SIGN_ONLY, "RSA Sign-Only"}, 218 {PGP_PKA_ELGAMAL, "Elgamal (Encrypt-Only)"}, 219 {PGP_PKA_DSA, "DSA"}, 220 {PGP_PKA_RESERVED_ELLIPTIC_CURVE, "Reserved for Elliptic Curve"}, 221 {PGP_PKA_ECDSA, "ECDSA"}, 222 {PGP_PKA_ELGAMAL_ENCRYPT_OR_SIGN, "Reserved (formerly Elgamal Encrypt or Sign"}, 223 {PGP_PKA_RESERVED_DH, "Reserved for Diffie-Hellman (X9.42)"}, 224 {PGP_PKA_PRIVATE00, "Private/Experimental"}, 225 {PGP_PKA_PRIVATE01, "Private/Experimental"}, 226 {PGP_PKA_PRIVATE02, "Private/Experimental"}, 227 {PGP_PKA_PRIVATE03, "Private/Experimental"}, 228 {PGP_PKA_PRIVATE04, "Private/Experimental"}, 229 {PGP_PKA_PRIVATE05, "Private/Experimental"}, 230 {PGP_PKA_PRIVATE06, "Private/Experimental"}, 231 {PGP_PKA_PRIVATE07, "Private/Experimental"}, 232 {PGP_PKA_PRIVATE08, "Private/Experimental"}, 233 {PGP_PKA_PRIVATE09, "Private/Experimental"}, 234 {PGP_PKA_PRIVATE10, "Private/Experimental"}, 235 {0x00, NULL}, /* this is the end-of-array marker */ 236 }; 237 238 static pgp_map_t symm_alg_map[] = 239 { 240 {PGP_SA_PLAINTEXT, "Plaintext or unencrypted data"}, 241 {PGP_SA_IDEA, "IDEA"}, 242 {PGP_SA_TRIPLEDES, "TripleDES"}, 243 {PGP_SA_CAST5, "CAST5"}, 244 {PGP_SA_BLOWFISH, "Blowfish"}, 245 {PGP_SA_AES_128, "AES (128-bit key)"}, 246 {PGP_SA_AES_192, "AES (192-bit key)"}, 247 {PGP_SA_AES_256, "AES (256-bit key)"}, 248 {PGP_SA_TWOFISH, "Twofish(256-bit key)"}, 249 {PGP_SA_CAMELLIA_128, "Camellia (128-bit key)"}, 250 {PGP_SA_CAMELLIA_192, "Camellia (192-bit key)"}, 251 {PGP_SA_CAMELLIA_256, "Camellia (256-bit key)"}, 252 {0x00, NULL}, /* this is the end-of-array marker */ 253 }; 254 255 static pgp_map_t hash_alg_map[] = 256 { 257 {PGP_HASH_MD5, "MD5"}, 258 {PGP_HASH_SHA1, "SHA1"}, 259 {PGP_HASH_RIPEMD, "RIPEMD160"}, 260 {PGP_HASH_SHA256, "SHA256"}, 261 {PGP_HASH_SHA384, "SHA384"}, 262 {PGP_HASH_SHA512, "SHA512"}, 263 {PGP_HASH_SHA224, "SHA224"}, 264 {0x00, NULL}, /* this is the end-of-array marker */ 265 }; 266 267 static pgp_map_t compression_alg_map[] = 268 { 269 {PGP_C_NONE, "Uncompressed"}, 270 {PGP_C_ZIP, "ZIP(RFC1951)"}, 271 {PGP_C_ZLIB, "ZLIB(RFC1950)"}, 272 {PGP_C_BZIP2, "Bzip2(BZ2)"}, 273 {0x00, NULL}, /* this is the end-of-array marker */ 274 }; 275 276 static pgp_bit_map_t ss_notation_map_byte0[] = 277 { 278 {0x80, "Human-readable"}, 279 {0x00, NULL}, 280 }; 281 282 static pgp_bit_map_t *ss_notation_map[] = 283 { 284 ss_notation_map_byte0, 285 }; 286 287 static pgp_bit_map_t ss_feature_map_byte0[] = 288 { 289 {0x01, "Modification Detection"}, 290 {0x00, NULL}, 291 }; 292 293 static pgp_bit_map_t *ss_feature_map[] = 294 { 295 ss_feature_map_byte0, 296 }; 297 298 static pgp_bit_map_t ss_key_flags_map[] = 299 { 300 {0x01, "May be used to certify other keys"}, 301 {0x02, "May be used to sign data"}, 302 {0x04, "May be used to encrypt communications"}, 303 {0x08, "May be used to encrypt storage"}, 304 {0x10, "Private component may have been split by a secret-sharing mechanism"}, 305 {0x80, "Private component may be in possession of more than one person"}, 306 {0x00, NULL}, 307 }; 308 309 static pgp_bit_map_t ss_key_server_prefs_map[] = 310 { 311 {0x80, "Key holder requests that this key only be modified or updated by the key holder or an administrator of the key server"}, 312 {0x00, NULL}, 313 }; 314 315 /* 316 * Private functions 317 */ 318 319 static void 320 list_init(pgp_list_t *list) 321 { 322 list->size = 0; 323 list->used = 0; 324 list->strings = NULL; 325 } 326 327 static void 328 list_free_strings(pgp_list_t *list) 329 { 330 unsigned i; 331 332 for (i = 0; i < list->used; i++) { 333 free(list->strings[i]); 334 list->strings[i] = NULL; 335 } 336 } 337 338 static void 339 list_free(pgp_list_t *list) 340 { 341 if (list->strings) 342 free(list->strings); 343 list_init(list); 344 } 345 346 static unsigned 347 list_resize(pgp_list_t *list) 348 { 349 /* 350 * We only resize in one direction - upwards. Algorithm used : double 351 * the current size then add 1 352 */ 353 char **newstrings; 354 int newsize; 355 356 newsize = (list->size * 2) + 1; 357 newstrings = realloc(list->strings, newsize * sizeof(char *)); 358 if (newstrings) { 359 list->strings = newstrings; 360 list->size = newsize; 361 return 1; 362 } 363 (void) fprintf(stderr, "list_resize - bad alloc\n"); 364 return 0; 365 } 366 367 static unsigned 368 add_str(pgp_list_t *list, const char *str) 369 { 370 if (list->size == list->used && !list_resize(list)) { 371 return 0; 372 } 373 list->strings[list->used++] = __UNCONST(str); 374 return 1; 375 } 376 377 /* find a bitfield in a map - serial search */ 378 static const char * 379 find_bitfield(pgp_bit_map_t *map, uint8_t octet) 380 { 381 pgp_bit_map_t *row; 382 383 for (row = map; row->string != NULL && row->mask != octet ; row++) { 384 } 385 return (row->string) ? row->string : "Unknown"; 386 } 387 388 /* ! generic function to initialise pgp_text_t structure */ 389 void 390 pgp_text_init(pgp_text_t *text) 391 { 392 list_init(&text->known); 393 list_init(&text->unknown); 394 } 395 396 /** 397 * \ingroup Core_Print 398 * 399 * pgp_text_free() frees the memory used by an pgp_text_t structure 400 * 401 * \param text Pointer to a previously allocated structure. This structure and its contents will be freed. 402 */ 403 void 404 pgp_text_free(pgp_text_t *text) 405 { 406 /* Strings in "known" array will be constants, so don't free them */ 407 list_free(&text->known); 408 409 /* 410 * Strings in "unknown" array will be dynamically allocated, so do 411 * free them 412 */ 413 list_free_strings(&text->unknown); 414 list_free(&text->unknown); 415 416 free(text); 417 } 418 419 /* XXX: should this (and many others) be unsigned? */ 420 /* ! generic function which adds text derived from single octet map to text */ 421 static unsigned 422 add_str_from_octet_map(pgp_text_t *map, char *str, uint8_t octet) 423 { 424 if (str && !add_str(&map->known, str)) { 425 /* 426 * value recognised, but there was a problem adding it to the 427 * list 428 */ 429 /* XXX - should print out error msg here, Ben? - rachel */ 430 return 0; 431 } else if (!str) { 432 /* 433 * value not recognised and there was a problem adding it to 434 * the unknown list 435 */ 436 unsigned len = 2 + 2 + 1; /* 2 for "0x", 2 for 437 * single octet in hex 438 * format, 1 for NUL */ 439 if ((str = calloc(1, len)) == NULL) { 440 (void) fprintf(stderr, "add_str_from_octet_map: bad alloc\n"); 441 return 0; 442 } 443 (void) snprintf(str, len, "0x%x", octet); 444 if (!add_str(&map->unknown, str)) { 445 return 0; 446 } 447 free(str); 448 } 449 return 1; 450 } 451 452 /* ! generic function which adds text derived from single bit map to text */ 453 static unsigned 454 add_bitmap_entry(pgp_text_t *map, const char *str, uint8_t bit) 455 { 456 457 if (str && !add_str(&map->known, str)) { 458 /* 459 * value recognised, but there was a problem adding it to the 460 * list 461 */ 462 /* XXX - should print out error msg here, Ben? - rachel */ 463 return 0; 464 } else if (!str) { 465 /* 466 * value not recognised and there was a problem adding it to 467 * the unknown list 468 * 2 chars of the string are the format definition, this will 469 * be replaced in the output by 2 chars of hex, so the length 470 * will be correct 471 */ 472 char *newstr; 473 if (asprintf(&newstr, "Unknown bit(0x%x)", bit) == -1) { 474 (void) fprintf(stderr, "add_bitmap_entry: bad alloc\n"); 475 return 0; 476 } 477 if (!add_str(&map->unknown, newstr)) { 478 return 0; 479 } 480 free(newstr); 481 } 482 return 1; 483 } 484 485 /** 486 * Produce a structure containing human-readable textstrings 487 * representing the recognised and unrecognised contents 488 * of this byte array. text_fn() will be called on each octet in turn. 489 * Each octet will generate one string representing the whole byte. 490 * 491 */ 492 493 static pgp_text_t * 494 text_from_bytemapped_octets(const pgp_data_t *data, 495 const char *(*text_fn)(uint8_t octet)) 496 { 497 pgp_text_t *text; 498 const char *str; 499 unsigned i; 500 501 /* 502 * ! allocate and initialise pgp_text_t structure to store derived 503 * strings 504 */ 505 if ((text = calloc(1, sizeof(*text))) == NULL) { 506 return NULL; 507 } 508 509 pgp_text_init(text); 510 511 /* ! for each octet in field ... */ 512 for (i = 0; i < data->len; i++) { 513 /* ! derive string from octet */ 514 str = (*text_fn) (data->contents[i]); 515 516 /* ! and add to text */ 517 if (!add_str_from_octet_map(text, netpgp_strdup(str), 518 data->contents[i])) { 519 pgp_text_free(text); 520 return NULL; 521 } 522 } 523 /* 524 * ! All values have been added to either the known or the unknown 525 * list 526 */ 527 return text; 528 } 529 530 /** 531 * Produce a structure containing human-readable textstrings 532 * representing the recognised and unrecognised contents 533 * of this byte array, derived from each bit of each octet. 534 * 535 */ 536 static pgp_text_t * 537 showall_octets_bits(pgp_data_t *data, pgp_bit_map_t **map, size_t nmap) 538 { 539 pgp_text_t *text; 540 const char *str; 541 unsigned i; 542 uint8_t mask, bit; 543 int j = 0; 544 545 /* 546 * ! allocate and initialise pgp_text_t structure to store derived 547 * strings 548 */ 549 if ((text = calloc(1, sizeof(pgp_text_t))) == NULL) { 550 return NULL; 551 } 552 553 pgp_text_init(text); 554 555 /* ! for each octet in field ... */ 556 for (i = 0; i < data->len; i++) { 557 /* ! for each bit in octet ... */ 558 mask = 0x80; 559 for (j = 0; j < 8; j++, mask = (unsigned)mask >> 1) { 560 bit = data->contents[i] & mask; 561 if (bit) { 562 str = (i >= nmap) ? "Unknown" : 563 find_bitfield(map[i], bit); 564 if (!add_bitmap_entry(text, str, bit)) { 565 pgp_text_free(text); 566 return NULL; 567 } 568 } 569 } 570 } 571 return text; 572 } 573 574 /* 575 * Public Functions 576 */ 577 578 /** 579 * \ingroup Core_Print 580 * returns description of the Packet Tag 581 * \param packet_tag 582 * \return string or "Unknown" 583 */ 584 const char * 585 pgp_show_packet_tag(pgp_content_enum packet_tag) 586 { 587 const char *ret; 588 589 ret = pgp_str_from_map(packet_tag, packet_tag_map); 590 if (!ret) { 591 ret = "Unknown Tag"; 592 } 593 return ret; 594 } 595 596 /** 597 * \ingroup Core_Print 598 * 599 * returns description of the Signature Sub-Packet type 600 * \param ss_type Signature Sub-Packet type 601 * \return string or "Unknown" 602 */ 603 const char * 604 pgp_show_ss_type(pgp_content_enum ss_type) 605 { 606 return pgp_str_from_map(ss_type, ss_type_map); 607 } 608 609 /** 610 * \ingroup Core_Print 611 * 612 * returns description of the Revocation Reason code 613 * \param ss_rr_code Revocation Reason code 614 * \return string or "Unknown" 615 */ 616 const char * 617 pgp_show_ss_rr_code(pgp_ss_rr_code_t ss_rr_code) 618 { 619 return pgp_str_from_map(ss_rr_code, ss_rr_code_map); 620 } 621 622 /** 623 * \ingroup Core_Print 624 * 625 * returns description of the given Signature type 626 * \param sig_type Signature type 627 * \return string or "Unknown" 628 */ 629 const char * 630 pgp_show_sig_type(pgp_sig_type_t sig_type) 631 { 632 return pgp_str_from_map(sig_type, sig_type_map); 633 } 634 635 /** 636 * \ingroup Core_Print 637 * 638 * returns description of the given Public Key Algorithm 639 * \param pka Public Key Algorithm type 640 * \return string or "Unknown" 641 */ 642 const char * 643 pgp_show_pka(pgp_pubkey_alg_t pka) 644 { 645 return pgp_str_from_map(pka, pubkey_alg_map); 646 } 647 648 /** 649 * \ingroup Core_Print 650 * returns description of the Preferred Compression 651 * \param octet Preferred Compression 652 * \return string or "Unknown" 653 */ 654 const char * 655 pgp_show_ss_zpref(uint8_t octet) 656 { 657 return pgp_str_from_map(octet, compression_alg_map); 658 } 659 660 /** 661 * \ingroup Core_Print 662 * 663 * returns set of descriptions of the given Preferred Compression Algorithms 664 * \param ss_zpref Array of Preferred Compression Algorithms 665 * \return NULL if cannot allocate memory or other error 666 * \return pointer to structure, if no error 667 */ 668 pgp_text_t * 669 pgp_showall_ss_zpref(const pgp_data_t *ss_zpref) 670 { 671 return text_from_bytemapped_octets(ss_zpref, 672 &pgp_show_ss_zpref); 673 } 674 675 676 /** 677 * \ingroup Core_Print 678 * 679 * returns description of the Hash Algorithm type 680 * \param hash Hash Algorithm type 681 * \return string or "Unknown" 682 */ 683 const char * 684 pgp_show_hash_alg(uint8_t hash) 685 { 686 return pgp_str_from_map(hash, hash_alg_map); 687 } 688 689 /** 690 * \ingroup Core_Print 691 * 692 * returns set of descriptions of the given Preferred Hash Algorithms 693 * \param ss_hashpref Array of Preferred Hash Algorithms 694 * \return NULL if cannot allocate memory or other error 695 * \return pointer to structure, if no error 696 */ 697 pgp_text_t * 698 pgp_showall_ss_hashpref(const pgp_data_t *ss_hashpref) 699 { 700 return text_from_bytemapped_octets(ss_hashpref, 701 &pgp_show_hash_alg); 702 } 703 704 const char * 705 pgp_show_symm_alg(uint8_t hash) 706 { 707 return pgp_str_from_map(hash, symm_alg_map); 708 } 709 710 /** 711 * \ingroup Core_Print 712 * returns description of the given Preferred Symmetric Key Algorithm 713 * \param octet 714 * \return string or "Unknown" 715 */ 716 const char * 717 pgp_show_ss_skapref(uint8_t octet) 718 { 719 return pgp_str_from_map(octet, symm_alg_map); 720 } 721 722 /** 723 * \ingroup Core_Print 724 * 725 * returns set of descriptions of the given Preferred Symmetric Key Algorithms 726 * \param ss_skapref Array of Preferred Symmetric Key Algorithms 727 * \return NULL if cannot allocate memory or other error 728 * \return pointer to structure, if no error 729 */ 730 pgp_text_t * 731 pgp_showall_ss_skapref(const pgp_data_t *ss_skapref) 732 { 733 return text_from_bytemapped_octets(ss_skapref, 734 &pgp_show_ss_skapref); 735 } 736 737 /** 738 * \ingroup Core_Print 739 * returns description of one SS Feature 740 * \param octet 741 * \return string or "Unknown" 742 */ 743 static const char * 744 show_ss_feature(uint8_t octet, unsigned offset) 745 { 746 if (offset >= PGP_ARRAY_SIZE(ss_feature_map)) { 747 return "Unknown"; 748 } 749 return find_bitfield(ss_feature_map[offset], octet); 750 } 751 752 /** 753 * \ingroup Core_Print 754 * 755 * returns set of descriptions of the given SS Features 756 * \param ss_features Signature Sub-Packet Features 757 * \return NULL if cannot allocate memory or other error 758 * \return pointer to structure, if no error 759 */ 760 /* XXX: shouldn't this use show_all_octets_bits? */ 761 pgp_text_t * 762 pgp_showall_ss_features(pgp_data_t ss_features) 763 { 764 pgp_text_t *text; 765 const char *str; 766 unsigned i; 767 uint8_t mask, bit; 768 int j; 769 770 if ((text = calloc(1, sizeof(*text))) == NULL) { 771 return NULL; 772 } 773 774 pgp_text_init(text); 775 776 for (i = 0; i < ss_features.len; i++) { 777 mask = 0x80; 778 for (j = 0; j < 8; j++, mask = (unsigned)mask >> 1) { 779 bit = ss_features.contents[i] & mask; 780 if (bit) { 781 str = show_ss_feature(bit, i); 782 if (!add_bitmap_entry(text, str, bit)) { 783 pgp_text_free(text); 784 return NULL; 785 } 786 } 787 } 788 } 789 return text; 790 } 791 792 /** 793 * \ingroup Core_Print 794 * returns description of SS Key Flag 795 * \param octet 796 * \param map 797 * \return 798 */ 799 const char * 800 pgp_show_ss_key_flag(uint8_t octet, pgp_bit_map_t *map) 801 { 802 return find_bitfield(map, octet); 803 } 804 805 /** 806 * \ingroup Core_Print 807 * 808 * returns set of descriptions of the given Preferred Key Flags 809 * \param ss_key_flags Array of Key Flags 810 * \return NULL if cannot allocate memory or other error 811 * \return pointer to structure, if no error 812 */ 813 pgp_text_t * 814 pgp_showall_ss_key_flags(const pgp_data_t *ss_key_flags) 815 { 816 pgp_text_t *text; 817 const char *str; 818 uint8_t mask, bit; 819 int i; 820 821 if ((text = calloc(1, sizeof(*text))) == NULL) { 822 return NULL; 823 } 824 825 pgp_text_init(text); 826 827 /* xxx - TBD: extend to handle multiple octets of bits - rachel */ 828 for (i = 0, mask = 0x80; i < 8; i++, mask = (unsigned)mask >> 1) { 829 bit = ss_key_flags->contents[0] & mask; 830 if (bit) { 831 str = pgp_show_ss_key_flag(bit, ss_key_flags_map); 832 if (!add_bitmap_entry(text, netpgp_strdup(str), bit)) { 833 pgp_text_free(text); 834 return NULL; 835 } 836 } 837 } 838 /* 839 * xxx - must add error text if more than one octet. Only one 840 * currently specified -- rachel 841 */ 842 return text; 843 } 844 845 /** 846 * \ingroup Core_Print 847 * 848 * returns description of one given Key Server Preference 849 * 850 * \param prefs Byte containing bitfield of preferences 851 * \param map 852 * \return string or "Unknown" 853 */ 854 const char * 855 pgp_show_keyserv_pref(uint8_t prefs, pgp_bit_map_t *map) 856 { 857 return find_bitfield(map, prefs); 858 } 859 860 /** 861 * \ingroup Core_Print 862 * returns set of descriptions of given Key Server Preferences 863 * \param ss_key_server_prefs 864 * \return NULL if cannot allocate memory or other error 865 * \return pointer to structure, if no error 866 * 867 */ 868 pgp_text_t * 869 pgp_show_keyserv_prefs(const pgp_data_t *prefs) 870 { 871 pgp_text_t *text; 872 const char *str; 873 uint8_t mask, bit; 874 int i = 0; 875 876 if ((text = calloc(1, sizeof(*text))) == NULL) { 877 return NULL; 878 } 879 880 pgp_text_init(text); 881 882 /* xxx - TBD: extend to handle multiple octets of bits - rachel */ 883 884 for (i = 0, mask = 0x80; i < 8; i++, mask = (unsigned)mask >> 1) { 885 bit = prefs->contents[0] & mask; 886 if (bit) { 887 str = pgp_show_keyserv_pref(bit, 888 ss_key_server_prefs_map); 889 if (!add_bitmap_entry(text, netpgp_strdup(str), bit)) { 890 pgp_text_free(text); 891 return NULL; 892 } 893 } 894 } 895 /* 896 * xxx - must add error text if more than one octet. Only one 897 * currently specified -- rachel 898 */ 899 return text; 900 } 901 902 /** 903 * \ingroup Core_Print 904 * 905 * returns set of descriptions of the given SS Notation Data Flags 906 * \param ss_notation Signature Sub-Packet Notation Data 907 * \return NULL if cannot allocate memory or other error 908 * \return pointer to structure, if no error 909 */ 910 pgp_text_t * 911 pgp_showall_notation(pgp_ss_notation_t ss_notation) 912 { 913 return showall_octets_bits(&ss_notation.flags, 914 ss_notation_map, 915 PGP_ARRAY_SIZE(ss_notation_map)); 916 } 917
Indexes created Thu Jun 11 00:25:07 UTC 2026