rpmio/rpmpgp.c

   1 /*@-boundsread@*/
   2 /** \ingroup rpmio signature
   3  * \file rpmio/rpmpgp.c
   4  * Routines to handle RFC-2440 detached signatures.
   5  */
   6
   7 #include "system.h"
   8 #include "rpmio_internal.h"
   9 #include "debug.h"
  10
  11 /*@access pgpDig @*/
  12 /*@access pgpDigParams @*/
  13
  14 /*@unchecked@*/
  15 static int _debug = 0;
  16
  17 /*@unchecked@*/
  18 static int _print = 0;
  19
  20 /*@unchecked@*/ /*@null@*/
  21 static pgpDig _dig = NULL;
  22
  23 /*@unchecked@*/ /*@null@*/
  24 static pgpDigParams _digp = NULL;
  25
  26 #ifdef  DYING
  27 /* This is the unarmored RPM-GPG-KEY public key. */
  28 const char * redhatPubKeyDSA = "\
  29 mQGiBDfqVDgRBADBKr3Bl6PO8BQ0H8sJoD6p9U7Yyl7pjtZqioviPwXP+DCWd4u8\n\
  30 HQzcxAZ57m8ssA1LK1Fx93coJhDzM130+p5BG9mYSWShLabR3N1KXdXQYYcowTOM\n\
  31 GxdwYRGr1Spw8QydLhjVfU1VSl4xt6bupPbWJbyjkg5Z3P7BlUOUJmrx3wCgobNV\n\
  32 EDGaWYJcch5z5B1of/41G8kEAKii6q7Gu/vhXXnLS6m15oNnPVybyngiw/23dKjS\n\
  33 ZVG7rKANEK2mxg1VB+vc/uUc4k49UxJJfCZg1gu1sPFV3GSa+Y/7jsiLktQvCiLP\n\
  34 lncQt1dV+ENmHR5BdIDPWDzKBVbgWnSDnqQ6KrZ7T6AlZ74VMpjGxxkWU6vV2xsW\n\
  35 XCLPA/9P/vtImA8CZN3jxGgtK5GGtDNJ/cMhhuv5tnfwFg4b/VGo2Jr8mhLUqoIb\n\
  36 E6zeGAmZbUpdckDco8D5fiFmqTf5+++pCEpJLJkkzel/32N2w4qzPrcRMCiBURES\n\
  37 PjCLd4Y5rPoU8E4kOHc/4BuHN903tiCsCPloCrWsQZ7UdxfQ5LQiUmVkIEhhdCwg\n\
  38 SW5jIDxzZWN1cml0eUByZWRoYXQuY29tPohVBBMRAgAVBQI36lQ4AwsKAwMVAwID\n\
  39 FgIBAheAAAoJECGRgM3bQqYOsBQAnRVtg7B25Hm11PHcpa8FpeddKiq2AJ9aO8sB\n\
  40 XmLDmPOEFI75mpTrKYHF6rkCDQQ36lRyEAgAokgI2xJ+3bZsk8jRA8ORIX8DH05U\n\
  41 lMH27qFYzLbT6npXwXYIOtVn0K2/iMDj+oEB1Aa2au4OnddYaLWp06v3d+XyS0t+\n\
  42 5ab2ZfIQzdh7wCwxqRkzR+/H5TLYbMG+hvtTdylfqIX0WEfoOXMtWEGSVwyUsnM3\n\
  43 Jy3LOi48rQQSCKtCAUdV20FoIGWhwnb/gHU1BnmES6UdQujFBE6EANqPhp0coYoI\n\
  44 hHJ2oIO8ujQItvvNaU88j/s/izQv5e7MXOgVSjKe/WX3s2JtB/tW7utpy12wh1J+\n\
  45 JsFdbLV/t8CozUTpJgx5mVA3RKlxjTA+On+1IEUWioB+iVfT7Ov/0kcAzwADBQf9\n\
  46 E4SKCWRand8K0XloMYgmipxMhJNnWDMLkokvbMNTUoNpSfRoQJ9EheXDxwMpTPwK\n\
  47 ti/PYrrL2J11P2ed0x7zm8v3gLrY0cue1iSba+8glY+p31ZPOr5ogaJw7ZARgoS8\n\
  48 BwjyRymXQp+8Dete0TELKOL2/itDOPGHW07SsVWOR6cmX4VlRRcWB5KejaNvdrE5\n\
  49 4XFtOd04NMgWI63uqZc4zkRa+kwEZtmbz3tHSdRCCE+Y7YVP6IUf/w6YPQFQriWY\n\
  50 FiA6fD10eB+BlIUqIw80VgjsBKmCwvKkn4jg8kibXgj4/TzQSx77uYokw1EqQ2wk\n\
  51 OZoaEtcubsNMquuLCMWijYhGBBgRAgAGBQI36lRyAAoJECGRgM3bQqYOhyYAnj7h\n\
  52 VDY/FJAGqmtZpwVp9IlitW5tAJ4xQApr/jNFZCTksnI+4O1765F7tA==\n\
  53 ";
  54
  55 /* This is the unarmored RPM-PGP-KEY public key. */
  56 const char * redhatPubKeyRSA = "\
  57 mQCNAzEpXjUAAAEEAKG4/V9oUSiDc9wIge6Bmg6erDGCLzmFyioAho8kDIJSrcmi\n\
  58 F9qTdPq+fj726pgW1iSb0Y7syZn9Y2lgQm5HkPODfNi8eWyTFSxbr8ygosLRClTP\n\
  59 xqHVhtInGrfZNLoSpv1LdWOme0yOpOQJnghdOMzKXpgf5g84vaUg6PHLopv5AAUR\n\
  60 tCpSZWQgSGF0IFNvZnR3YXJlLCBJbmMuIDxyZWRoYXRAcmVkaGF0LmNvbT6JAJUD\n\
  61 BRAyA5tUoyDApfg4JKEBAUzSA/9QdcVsu955vVyZDk8uvOXWV0X3voT9B3aYMFvj\n\
  62 UNHUD6F1VFruwQHVKbGJEq1o5MOA6OXKR3vJZStXEMF47TWXJfQaflgl8ywZTH5W\n\
  63 +eMlKau6Nr0labUV3lmsAE4Vsgu8NCkzIrp2wNVbeW2ZAXtrKswV+refLquUhp7l\n\
  64 wMpH9IkAdQMFEDGttkRNdXhbO1TgGQEBAGoC/j6C22PqXIyqZc6fG6J6Jl/T5kFG\n\
  65 xH1pKIzua5WCDDugAgnuOJgywa4pegT4UqwEZiMTAlwT6dmG1CXgKB+5V7lnCjDc\n\
  66 JZLni0iztoe08ig6fJrjNGXljf7KYXzgwBftQokAlQMFEDMQzo2MRVM9rfPulQEB\n\
  67 pLoD/1/MWv3u0Paiu14XRvDrBaJ7BmG2/48bA5vKOzpvvoNRO95YS7ZEtqErXA7Y\n\
  68 DRO8+C8f6PAILMk7kCk4lNMscS/ZRzu5+J8cv4ejsFvxgJBBU3Zgp8AWdWOpvZ0I\n\
  69 wW//HoDUGhOxlEtymljIMFBkj4SysHWhCBUfA9Xy86kouTJQiQCVAwUQMxDOQ50a\n\
  70 feTWLUSJAQFnYQQAkt9nhMTeioREB1DvJt+vsFyOj//o3ThqK5ySEP3dgj62iaQp\n\
  71 JrBmAe5XZPw25C/TXAf+x27H8h2QbKgq49VtsElFexc6wO+uq85fAPDdyE+2XyNE\n\
  72 njGZkY/TP2F/jTB0sAwJO+xFCHmSYkcBjzxK/2LMD+O7rwp2UCUhhl9QhhqJAJUD\n\
  73 BRAx5na6pSDo8cuim/kBARmjA/4lDVnV2h9KiNabp9oE38wmGgu5m5XgUHW8L6du\n\
  74 iQDnwO5IgXN2vDpKGxbgtwv6iYYmGd8IRQ66uJvOsxSv3OR7J7LkCHuI2b/s0AZn\n\
  75 c79DZaJ2ChUCZlbNQBMeEdrFWif9NopY+d5+2tby1onu9XOFMMvomxL3NhctElYR\n\
  76 HC8Xw4kAlQMFEDHmdTtURTdEKY1MpQEBEtEEAMZbp1ZFrjiHkj2aLFC1S8dGRbSH\n\
  77 GUdnLP9qLPFgmWekp9E0o8ZztALGVdqPfPF3N/JJ+AL4IMrfojd7+eZKw36Mdvtg\n\
  78 dPI+Oz4sxHDbDynZ2qspD9Om5yYuxuz/Xq+9nO2IlsAnEYw3ag3cxat0kvxpOPRe\n\
  79 Yy+vFpgfDNizr3MgiQBVAwUQMXNMXCjtrosVMemRAQEDnwH7BsJrnnh91nI54LAK\n\
  80 Gcq3pr8ld0PAtWJmNRGQvUlpEMXUSnu59j2P1ogPNjL3PqKdVxk5Jqgcr8TPQMf3\n\
  81 V4fqXokAlQMFEDFy+8YiEmsRQ3LyzQEB+TwD/03QDslXLg5F3zj4zf0yI6ikT0be\n\
  82 5OhZv2pnkb80qgdHzFRxBOYmSoueRKdQJASd8F9ue4b3bmf/Y7ikiY0DblvxcXB2\n\
  83 sz1Pu8i2Zn9u8SKuxNIoVvM8/STRVkgPfvL5QjAWMHT9Wvg81XcI2yXJzrt/2f2g\n\
  84 mNpWIvVOOT85rVPIiQCVAwUQMVPRlBlzviMjNHElAQG1nwP/fpVX6nKRWJCSFeB7\n\
  85 leZ4lb+y1uMsMVv0n7agjJVw13SXaA267y7VWCBlnhsCemxEugqEIkI4lu/1mgtw\n\
  86 WPWSE0BOIVjj0AA8zp2T0H3ZCCMbiFAFJ1P2Gq2rKr8QrOb/08oH1lEzyz0j/jKh\n\
  87 qiXAxdlB1wojQB6yLbHvTIe3rZGJAHUDBRAxKetfzauiKSJ6LJEBAed/AvsEiGgj\n\
  88 TQzhsZcUuRNrQpV0cDGH9Mpril7P7K7yFIzju8biB+Cu6nEknSOHlMLl8usObVlk\n\
  89 d8Wf14soHC7SjItiGSKtI8JhauzBJPl6fDDeyHGsJKo9f9adKeBMCipCFOuJAJUD\n\
  90 BRAxKeqWRHFTaIK/x+0BAY6eA/4m5X4gs1UwOUIRnljo9a0cVs6ITL554J9vSCYH\n\
  91 Zzd87kFwdf5W1Vd82HIkRzcr6cp33E3IDkRzaQCMVw2me7HePP7+4Ry2q3EeZMbm\n\
  92 NE++VzkxjikzpRb2+F5nGB2UdsElkgbXinswebiuOwOrocLbz6JFdDsJPcT5gVfi\n\
  93 z15FuA==\n\
  94 ";
  95 #endif  /* DYING */
  96
  97 struct pgpValTbl_s pgpSigTypeTbl[] = {
  98     { PGPSIGTYPE_BINARY,        "Binary document signature" },
  99     { PGPSIGTYPE_TEXT,          "Text document signature" },
 100     { PGPSIGTYPE_STANDALONE,    "Standalone signature" },
 101     { PGPSIGTYPE_GENERIC_CERT,  "Generic certification of a User ID and Public Key" },
 102     { PGPSIGTYPE_PERSONA_CERT,  "Persona certification of a User ID and Public Key" },
 103     { PGPSIGTYPE_CASUAL_CERT,   "Casual certification of a User ID and Public Key" },
 104     { PGPSIGTYPE_POSITIVE_CERT, "Positive certification of a User ID and Public Key" },
 105     { PGPSIGTYPE_SUBKEY_BINDING,"Subkey Binding Signature" },
 106     { PGPSIGTYPE_SIGNED_KEY,    "Signature directly on a key" },
 107     { PGPSIGTYPE_KEY_REVOKE,    "Key revocation signature" },
 108     { PGPSIGTYPE_SUBKEY_REVOKE, "Subkey revocation signature" },
 109     { PGPSIGTYPE_CERT_REVOKE,   "Certification revocation signature" },
 110     { PGPSIGTYPE_TIMESTAMP,     "Timestamp signature" },
 111     { -1,                       "Unknown signature type" },
 112 };
 113
 114 struct pgpValTbl_s pgpPubkeyTbl[] = {
 115     { PGPPUBKEYALGO_RSA,        "RSA" },
 116     { PGPPUBKEYALGO_RSA_ENCRYPT,"RSA(Encrypt-Only)" },
 117     { PGPPUBKEYALGO_RSA_SIGN,   "RSA(Sign-Only)" },
 118     { PGPPUBKEYALGO_ELGAMAL_ENCRYPT,"Elgamal(Encrypt-Only)" },
 119     { PGPPUBKEYALGO_DSA,        "DSA" },
 120     { PGPPUBKEYALGO_EC,         "Elliptic Curve" },
 121     { PGPPUBKEYALGO_ECDSA,      "ECDSA" },
 122     { PGPPUBKEYALGO_ELGAMAL,    "Elgamal" },
 123     { PGPPUBKEYALGO_DH,         "Diffie-Hellman (X9.42)" },
 124     { -1,                       "Unknown public key algorithm" },
 125 };
 126
 127 struct pgpValTbl_s pgpSymkeyTbl[] = {
 128     { PGPSYMKEYALGO_PLAINTEXT,  "Plaintext" },
 129     { PGPSYMKEYALGO_IDEA,       "IDEA" },
 130     { PGPSYMKEYALGO_TRIPLE_DES, "3DES" },
 131     { PGPSYMKEYALGO_CAST5,      "CAST5" },
 132     { PGPSYMKEYALGO_BLOWFISH,   "BLOWFISH" },
 133     { PGPSYMKEYALGO_SAFER,      "SAFER" },
 134     { PGPSYMKEYALGO_DES_SK,     "DES/SK" },
 135     { PGPSYMKEYALGO_AES_128,    "AES(128-bit key)" },
 136     { PGPSYMKEYALGO_AES_192,    "AES(192-bit key)" },
 137     { PGPSYMKEYALGO_AES_256,    "AES(256-bit key)" },
 138     { PGPSYMKEYALGO_TWOFISH,    "TWOFISH" },
 139     { -1,                       "Unknown symmetric key algorithm" },
 140 };
 141
 142 struct pgpValTbl_s pgpCompressionTbl[] = {
 143     { PGPCOMPRESSALGO_NONE,     "Uncompressed" },
 144     { PGPCOMPRESSALGO_ZIP,      "ZIP" },
 145     { PGPCOMPRESSALGO_ZLIB,     "ZLIB" },
 146     { -1,                       "Unknown compression algorithm" },
 147 };
 148
 149 struct pgpValTbl_s pgpHashTbl[] = {
 150     { PGPHASHALGO_MD5,          "MD5" },
 151     { PGPHASHALGO_SHA1,         "SHA1" },
 152     { PGPHASHALGO_RIPEMD160,    "RIPEMD160" },
 153     { PGPHASHALGO_MD2,          "MD2" },
 154     { PGPHASHALGO_TIGER192,     "TIGER192" },
 155     { PGPHASHALGO_HAVAL_5_160,  "HAVAL-5-160" },
 156     { -1,                       "Unknown hash algorithm" },
 157 };
 158
 159 /*@-exportlocal -exportheadervar@*/
 160 /*@observer@*/ /*@unchecked@*/
 161 struct pgpValTbl_s pgpKeyServerPrefsTbl[] = {
 162     { 0x80,                     "No-modify" },
 163     { -1,                       "Unknown key server preference" },
 164 };
 165 /*@=exportlocal =exportheadervar@*/
 166
 167 struct pgpValTbl_s pgpSubTypeTbl[] = {
 168     { PGPSUBTYPE_SIG_CREATE_TIME,"signature creation time" },
 169     { PGPSUBTYPE_SIG_EXPIRE_TIME,"signature expiration time" },
 170     { PGPSUBTYPE_EXPORTABLE_CERT,"exportable certification" },
 171     { PGPSUBTYPE_TRUST_SIG,     "trust signature" },
 172     { PGPSUBTYPE_REGEX,         "regular expression" },
 173     { PGPSUBTYPE_REVOCABLE,     "revocable" },
 174     { PGPSUBTYPE_KEY_EXPIRE_TIME,"key expiration time" },
 175     { PGPSUBTYPE_BACKWARD_COMPAT,"placeholder for backward compatibility" },
 176     { PGPSUBTYPE_PREFER_SYMKEY, "preferred symmetric algorithms" },
 177     { PGPSUBTYPE_REVOKE_KEY,    "revocation key" },
 178     { PGPSUBTYPE_ISSUER_KEYID,  "issuer key ID" },
 179     { PGPSUBTYPE_NOTATION,      "notation data" },
 180     { PGPSUBTYPE_PREFER_HASH,   "preferred hash algorithms" },
 181     { PGPSUBTYPE_PREFER_COMPRESS,"preferred compression algorithms" },
 182     { PGPSUBTYPE_KEYSERVER_PREFERS,"key server preferences" },
 183     { PGPSUBTYPE_PREFER_KEYSERVER,"preferred key server" },
 184     { PGPSUBTYPE_PRIMARY_USERID,"primary user id" },
 185     { PGPSUBTYPE_POLICY_URL,    "policy URL" },
 186     { PGPSUBTYPE_KEY_FLAGS,     "key flags" },
 187     { PGPSUBTYPE_SIGNER_USERID, "signer's user id" },
 188     { PGPSUBTYPE_REVOKE_REASON, "reason for revocation" },
 189     { PGPSUBTYPE_INTERNAL_100,  "internal subpkt type 100" },
 190     { PGPSUBTYPE_INTERNAL_101,  "internal subpkt type 101" },
 191     { PGPSUBTYPE_INTERNAL_102,  "internal subpkt type 102" },
 192     { PGPSUBTYPE_INTERNAL_103,  "internal subpkt type 103" },
 193     { PGPSUBTYPE_INTERNAL_104,  "internal subpkt type 104" },
 194     { PGPSUBTYPE_INTERNAL_105,  "internal subpkt type 105" },
 195     { PGPSUBTYPE_INTERNAL_106,  "internal subpkt type 106" },
 196     { PGPSUBTYPE_INTERNAL_107,  "internal subpkt type 107" },
 197     { PGPSUBTYPE_INTERNAL_108,  "internal subpkt type 108" },
 198     { PGPSUBTYPE_INTERNAL_109,  "internal subpkt type 109" },
 199     { PGPSUBTYPE_INTERNAL_110,  "internal subpkt type 110" },
 200     { -1,                       "Unknown signature subkey type" },
 201 };
 202
 203 struct pgpValTbl_s pgpTagTbl[] = {
 204     { PGPTAG_PUBLIC_SESSION_KEY,"Public-Key Encrypted Session Key" },
 205     { PGPTAG_SIGNATURE,         "Signature" },
 206     { PGPTAG_SYMMETRIC_SESSION_KEY,"Symmetric-Key Encrypted Session Key" },
 207     { PGPTAG_ONEPASS_SIGNATURE, "One-Pass Signature" },
 208     { PGPTAG_SECRET_KEY,        "Secret Key" },
 209     { PGPTAG_PUBLIC_KEY,        "Public Key" },
 210     { PGPTAG_SECRET_SUBKEY,     "Secret Subkey" },
 211     { PGPTAG_COMPRESSED_DATA,   "Compressed Data" },
 212     { PGPTAG_SYMMETRIC_DATA,    "Symmetrically Encrypted Data" },
 213     { PGPTAG_MARKER,            "Marker" },
 214     { PGPTAG_LITERAL_DATA,      "Literal Data" },
 215     { PGPTAG_TRUST,             "Trust" },
 216     { PGPTAG_USER_ID,           "User ID" },
 217     { PGPTAG_PUBLIC_SUBKEY,     "Public Subkey" },
 218     { PGPTAG_COMMENT_OLD,       "Comment (from OpenPGP draft)" },
 219     { PGPTAG_PHOTOID,           "PGP's photo ID" },
 220     { PGPTAG_ENCRYPTED_MDC,     "Integrity protected encrypted data" },
 221     { PGPTAG_MDC,               "Manipulaion detection code packet" },
 222     { PGPTAG_PRIVATE_60,        "Private #60" },
 223     { PGPTAG_COMMENT,           "Comment" },
 224     { PGPTAG_PRIVATE_62,        "Private #62" },
 225     { PGPTAG_CONTROL,           "Control (GPG)" },
 226     { -1,                       "Unknown packet tag" },
 227 };
 228
 229 struct pgpValTbl_s pgpArmorTbl[] = {
 230     { PGPARMOR_MESSAGE,         "MESSAGE" },
 231     { PGPARMOR_PUBKEY,          "PUBLIC KEY BLOCK" },
 232     { PGPARMOR_SIGNATURE,       "SIGNATURE" },
 233     { PGPARMOR_SIGNED_MESSAGE,  "SIGNED MESSAGE" },
 234     { PGPARMOR_FILE,            "ARMORED FILE" },
 235     { PGPARMOR_PRIVKEY,         "PRIVATE KEY BLOCK" },
 236     { PGPARMOR_SECKEY,          "SECRET KEY BLOCK" },
 237     { -1,                       "Unknown armor block" }
 238 };
 239
 240 struct pgpValTbl_s pgpArmorKeyTbl[] = {
 241     { PGPARMORKEY_VERSION,      "Version: " },
 242     { PGPARMORKEY_COMMENT,      "Comment: " },
 243     { PGPARMORKEY_MESSAGEID,    "MessageID: " },
 244     { PGPARMORKEY_HASH,         "Hash: " },
 245     { PGPARMORKEY_CHARSET,      "Charset: " },
 246     { -1,                       "Unknown armor key" }
 247 };
 248
 249 /**
 250  * Wrapper to free(3), hides const compilation noise, permit NULL, return NULL.
 251  * @param p             memory to free
 252  * @return              NULL always
 253  */
 254 /*@unused@*/ static inline /*@null@*/ void *
 255 _free(/*@only@*/ /*@null@*/ /*@out@*/ const void * p)
 256         /*@modifies p @*/
 257 {
 258     if (p != NULL)      free((void *)p);
 259     return NULL;
 260 }
 261
 262 static void pgpPrtNL(void)
 263         /*@globals fileSystem @*/
 264         /*@modifies fileSystem @*/
 265 {
 266     if (!_print) return;
 267     fprintf(stderr, "\n");
 268 }
 269
 270 static void pgpPrtInt(const char *pre, int i)
 271         /*@globals fileSystem @*/
 272         /*@modifies fileSystem @*/
 273 {
 274     if (!_print) return;
 275     if (pre && *pre)
 276         fprintf(stderr, "%s", pre);
 277     fprintf(stderr, " %d", i);
 278 }
 279
 280 static void pgpPrtStr(const char *pre, const char *s)
 281         /*@globals fileSystem @*/
 282         /*@modifies fileSystem @*/
 283 {
 284     if (!_print) return;
 285     if (pre && *pre)
 286         fprintf(stderr, "%s", pre);
 287     fprintf(stderr, " %s", s);
 288 }
 289
 290 static void pgpPrtHex(const char *pre, const byte *p, unsigned int plen)
 291         /*@globals fileSystem @*/
 292         /*@modifies fileSystem @*/
 293 {
 294     if (!_print) return;
 295     if (pre && *pre)
 296         fprintf(stderr, "%s", pre);
 297     fprintf(stderr, " %s", pgpHexStr(p, plen));
 298 }
 299
 300 void pgpPrtVal(const char * pre, pgpValTbl vs, byte val)
 301         /*@globals fileSystem @*/
 302         /*@modifies fileSystem @*/
 303 {
 304     if (!_print) return;
 305     if (pre && *pre)
 306         fprintf(stderr, "%s", pre);
 307     fprintf(stderr, "%s(%u)", pgpValStr(vs, val), (unsigned)val);
 308 }
 309
 310 /**
 311  */
 312 /*@unused@*/ static /*@observer@*/
 313 const char * pgpMpiHex(const byte *p)
 314         /*@*/
 315 {
 316     static char prbuf[2048];
 317     char *t = prbuf;
 318     t = pgpHexCvt(t, p+2, pgpMpiLen(p)-2);
 319     return prbuf;
 320 }
 321
 322 /*@-boundswrite@*/
 323 /**
 324  * @return              0 on success
 325  */
 326 static int pgpHexSet(const char * pre, int lbits,
 327                 /*@out@*/ mp32number * mpn, const byte * p, const byte * pend)
 328         /*@globals fileSystem @*/
 329         /*@modifies *mpn, fileSystem @*/
 330 {
 331     unsigned int mbits = pgpMpiBits(p);
 332     unsigned int nbits;
 333     unsigned int nbytes;
 334     char * t;
 335     unsigned int ix;
 336
 337     if ((p + ((mbits+7) >> 3)) > pend)
 338         return 1;
 339
 340     nbits = (lbits > mbits ? lbits : mbits);
 341     nbytes = ((nbits + 7) >> 3);
 342     t = xmalloc(2*nbytes+1);
 343     ix = 2 * ((nbits - mbits) >> 3);
 344
 345 if (_debug)
 346 fprintf(stderr, "*** mbits %u nbits %u nbytes %u t %p[%d] ix %u\n", mbits, nbits, nbytes, t, (2*nbytes+1), ix);
 347     if (ix > 0) memset(t, (int)'0', ix);
 348     strcpy(t+ix, pgpMpiHex(p));
 349 if (_debug)
 350 fprintf(stderr, "*** %s %s\n", pre, t);
 351     mp32nsethex(mpn, t);
 352     t = _free(t);
 353 if (_debug && _print)
 354 fprintf(stderr, "\t %s ", pre), mp32println(stderr, mpn->size, mpn->data);
 355     return 0;
 356 }
 357 /*@=boundswrite@*/
 358
 359 int pgpPrtSubType(const byte *h, unsigned int hlen, pgpSigType sigtype)
 360 {
 361     const byte *p = h;
 362     unsigned plen;
 363     int i;
 364
 365     while (hlen > 0) {
 366         i = pgpLen(p, &plen);
 367         p += i;
 368         hlen -= i;
 369
 370         pgpPrtVal("    ", pgpSubTypeTbl, p[0]);
 371         switch (*p) {
 372         case PGPSUBTYPE_PREFER_SYMKEY:  /* preferred symmetric algorithms */
 373             for (i = 1; i < plen; i++)
 374                 pgpPrtVal(" ", pgpSymkeyTbl, p[i]);
 375             /*@switchbreak@*/ break;
 376         case PGPSUBTYPE_PREFER_HASH:    /* preferred hash algorithms */
 377             for (i = 1; i < plen; i++)
 378                 pgpPrtVal(" ", pgpHashTbl, p[i]);
 379             /*@switchbreak@*/ break;
 380         case PGPSUBTYPE_PREFER_COMPRESS:/* preferred compression algorithms */
 381             for (i = 1; i < plen; i++)
 382                 pgpPrtVal(" ", pgpCompressionTbl, p[i]);
 383             /*@switchbreak@*/ break;
 384         case PGPSUBTYPE_KEYSERVER_PREFERS:/* key server preferences */
 385             for (i = 1; i < plen; i++)
 386                 pgpPrtVal(" ", pgpKeyServerPrefsTbl, p[i]);
 387             /*@switchbreak@*/ break;
 388         case PGPSUBTYPE_SIG_CREATE_TIME:
 389 /*@-mods -mayaliasunique @*/
 390             if (_digp && !(_digp->saved & PGPDIG_SAVED_TIME) &&
 391                 sigtype == PGPSIGTYPE_POSITIVE_CERT)
 392             {
 393                 _digp->saved |= PGPDIG_SAVED_TIME;
 394                 memcpy(_digp->time, p+1, sizeof(_digp->time));
 395             }
 396 /*@=mods =mayaliasunique @*/
 397             /*@fallthrough@*/
 398         case PGPSUBTYPE_SIG_EXPIRE_TIME:
 399         case PGPSUBTYPE_KEY_EXPIRE_TIME:
 400             if ((plen - 1) == 4) {
 401                 time_t t = pgpGrab(p+1, plen-1);
 402                 if (_print)
 403                    fprintf(stderr, " %-24.24s(0x%08x)", ctime(&t), (unsigned)t);
 404             } else
 405                 pgpPrtHex("", p+1, plen-1);
 406             /*@switchbreak@*/ break;
 407
 408         case PGPSUBTYPE_ISSUER_KEYID:   /* issuer key ID */
 409 /*@-mods -mayaliasunique @*/
 410             if (_digp && !(_digp->saved & PGPDIG_SAVED_ID) &&
 411                 sigtype == PGPSIGTYPE_POSITIVE_CERT)
 412             {
 413                 _digp->saved |= PGPDIG_SAVED_ID;
 414                 memcpy(_digp->signid, p+1, sizeof(_digp->signid));
 415             }
 416 /*@=mods =mayaliasunique @*/
 417             /*@fallthrough@*/
 418         case PGPSUBTYPE_EXPORTABLE_CERT:
 419         case PGPSUBTYPE_TRUST_SIG:
 420         case PGPSUBTYPE_REGEX:
 421         case PGPSUBTYPE_REVOCABLE:
 422         case PGPSUBTYPE_BACKWARD_COMPAT:
 423         case PGPSUBTYPE_REVOKE_KEY:
 424         case PGPSUBTYPE_NOTATION:
 425         case PGPSUBTYPE_PREFER_KEYSERVER:
 426         case PGPSUBTYPE_PRIMARY_USERID:
 427         case PGPSUBTYPE_POLICY_URL:
 428         case PGPSUBTYPE_KEY_FLAGS:
 429         case PGPSUBTYPE_SIGNER_USERID:
 430         case PGPSUBTYPE_REVOKE_REASON:
 431         case PGPSUBTYPE_INTERNAL_100:
 432         case PGPSUBTYPE_INTERNAL_101:
 433         case PGPSUBTYPE_INTERNAL_102:
 434         case PGPSUBTYPE_INTERNAL_103:
 435         case PGPSUBTYPE_INTERNAL_104:
 436         case PGPSUBTYPE_INTERNAL_105:
 437         case PGPSUBTYPE_INTERNAL_106:
 438         case PGPSUBTYPE_INTERNAL_107:
 439         case PGPSUBTYPE_INTERNAL_108:
 440         case PGPSUBTYPE_INTERNAL_109:
 441         case PGPSUBTYPE_INTERNAL_110:
 442         default:
 443             pgpPrtHex("", p+1, plen-1);
 444             /*@switchbreak@*/ break;
 445         }
 446         pgpPrtNL();
 447         p += plen;
 448         hlen -= plen;
 449     }
 450     return 0;
 451 }
 452
 453 /*@-varuse =readonlytrans @*/
 454 /*@observer@*/ /*@unchecked@*/
 455 static const char * pgpSigRSA[] = {
 456     " m**d =",
 457     NULL,
 458 };
 459
 460 /*@observer@*/ /*@unchecked@*/
 461 static const char * pgpSigDSA[] = {
 462     "    r =",
 463     "    s =",
 464     NULL,
 465 };
 466 /*@=varuse =readonlytrans @*/
 467
 468 static int pgpPrtSigParams(/*@unused@*/ pgpTag tag, byte pubkey_algo, byte sigtype,
 469                 const byte *p, const byte *h, unsigned int hlen)
 470         /*@globals fileSystem @*/
 471         /*@modifies fileSystem @*/
 472 {
 473     const byte * pend = h + hlen;
 474     int i;
 475
 476     for (i = 0; p < pend; i++, p += pgpMpiLen(p)) {
 477         if (pubkey_algo == PGPPUBKEYALGO_RSA) {
 478             if (i >= 1) break;
 479             if (_dig &&
 480         (sigtype == PGPSIGTYPE_BINARY || sigtype == PGPSIGTYPE_TEXT))
 481             {
 482                 switch (i) {
 483                 case 0:         /* m**d */
 484                     mp32nsethex(&_dig->c, pgpMpiHex(p));
 485 if (_debug && _print)
 486 fprintf(stderr, "\t  m**d = "),  mp32println(stderr, _dig->c.size, _dig->c.data);
 487                     /*@switchbreak@*/ break;
 488                 default:
 489                     /*@switchbreak@*/ break;
 490                 }
 491             }
 492             pgpPrtStr("", pgpSigRSA[i]);
 493         } else if (pubkey_algo == PGPPUBKEYALGO_DSA) {
 494             if (i >= 2) break;
 495             if (_dig &&
 496         (sigtype == PGPSIGTYPE_BINARY || sigtype == PGPSIGTYPE_TEXT))
 497             {
 498                 int xx;
 499                 xx = 0;
 500                 switch (i) {
 501                 case 0:         /* r */
 502                     xx = pgpHexSet(pgpSigDSA[i], 160, &_dig->r, p, pend);
 503                     /*@switchbreak@*/ break;
 504                 case 1:         /* s */
 505                     xx = pgpHexSet(pgpSigDSA[i], 160, &_dig->s, p, pend);
 506                     /*@switchbreak@*/ break;
 507                 default:
 508                     xx = 1;
 509                     /*@switchbreak@*/ break;
 510                 }
 511                 if (xx) return xx;
 512             }
 513             pgpPrtStr("", pgpSigDSA[i]);
 514         } else {
 515             if (_print)
 516                 fprintf(stderr, "%7d", i);
 517         }
 518         pgpPrtStr("", pgpMpiStr(p));
 519         pgpPrtNL();
 520     }
 521
 522     return 0;
 523 }
 524
 525 int pgpPrtSig(pgpTag tag, const byte *h, unsigned int hlen)
 526         /*@globals _digp @*/
 527         /*@modifies *_digp @*/
 528 {
 529     byte version = h[0];
 530     byte * p;
 531     unsigned plen;
 532     int rc;
 533
 534     switch (version) {
 535     case 3:
 536     {   pgpPktSigV3 v = (pgpPktSigV3)h;
 537         time_t t;
 538
 539         if (v->hashlen != 5)
 540             return 1;
 541
 542         pgpPrtVal("V3 ", pgpTagTbl, tag);
 543         pgpPrtVal(" ", pgpPubkeyTbl, v->pubkey_algo);
 544         pgpPrtVal(" ", pgpHashTbl, v->hash_algo);
 545         pgpPrtVal(" ", pgpSigTypeTbl, v->sigtype);
 546         pgpPrtNL();
 547         t = pgpGrab(v->time, sizeof(v->time));
 548         if (_print)
 549             fprintf(stderr, " %-24.24s(0x%08x)", ctime(&t), (unsigned)t);
 550         pgpPrtNL();
 551         pgpPrtHex(" signer keyid", v->signid, sizeof(v->signid));
 552         plen = pgpGrab(v->signhash16, sizeof(v->signhash16));
 553         pgpPrtHex(" signhash16", v->signhash16, sizeof(v->signhash16));
 554         pgpPrtNL();
 555
 556         if (_digp && _digp->pubkey_algo == 0) {
 557             _digp->version = v->version;
 558             _digp->hashlen = v->hashlen;
 559             _digp->sigtype = v->sigtype;
 560             _digp->hash = memcpy(xmalloc(v->hashlen), &v->sigtype, v->hashlen);
 561             memcpy(_digp->time, v->time, sizeof(_digp->time));
 562             memcpy(_digp->signid, v->signid, sizeof(_digp->signid));
 563             _digp->pubkey_algo = v->pubkey_algo;
 564             _digp->hash_algo = v->hash_algo;
 565             memcpy(_digp->signhash16, v->signhash16, sizeof(_digp->signhash16));
 566         }
 567
 568         p = ((byte *)v) + sizeof(*v);
 569         rc = pgpPrtSigParams(tag, v->pubkey_algo, v->sigtype, p, h, hlen);
 570     }   break;
 571     case 4:
 572     {   pgpPktSigV4 v = (pgpPktSigV4)h;
 573
 574         pgpPrtVal("V4 ", pgpTagTbl, tag);
 575         pgpPrtVal(" ", pgpPubkeyTbl, v->pubkey_algo);
 576         pgpPrtVal(" ", pgpHashTbl, v->hash_algo);
 577         pgpPrtVal(" ", pgpSigTypeTbl, v->sigtype);
 578         pgpPrtNL();
 579
 580         p = &v->hashlen[0];
 581         plen = pgpGrab(v->hashlen, sizeof(v->hashlen));
 582         p += sizeof(v->hashlen);
 583
 584         if ((p + plen) > (h + hlen))
 585             return 1;
 586
 587 if (_debug && _print)
 588 fprintf(stderr, "   hash[%u] -- %s\n", plen, pgpHexStr(p, plen));
 589         if (_digp && _digp->pubkey_algo == 0) {
 590             _digp->hashlen = sizeof(*v) + plen;
 591             _digp->hash = memcpy(xmalloc(_digp->hashlen), v, _digp->hashlen);
 592         }
 593         (void) pgpPrtSubType(p, plen, v->sigtype);
 594         p += plen;
 595
 596         plen = pgpGrab(p,2);
 597         p += 2;
 598
 599         if ((p + plen) > (h + hlen))
 600             return 1;
 601
 602 if (_debug && _print)
 603 fprintf(stderr, " unhash[%u] -- %s\n", plen, pgpHexStr(p, plen));
 604         (void) pgpPrtSubType(p, plen, v->sigtype);
 605         p += plen;
 606
 607         plen = pgpGrab(p,2);
 608         pgpPrtHex(" signhash16", p, 2);
 609         pgpPrtNL();
 610
 611         if (_digp && _digp->pubkey_algo == 0) {
 612             _digp->version = v->version;
 613             _digp->sigtype = v->sigtype;
 614             _digp->pubkey_algo = v->pubkey_algo;
 615             _digp->hash_algo = v->hash_algo;
 616             memcpy(_digp->signhash16, p, sizeof(_digp->signhash16));
 617         }
 618
 619         p += 2;
 620         if (p > (h + hlen))
 621             return 1;
 622
 623         rc = pgpPrtSigParams(tag, v->pubkey_algo, v->sigtype, p, h, hlen);
 624     }   break;
 625     default:
 626         rc = 1;
 627         break;
 628     }
 629     return rc;
 630 }
 631
 632 /*@-varuse =readonlytrans @*/
 633 /*@observer@*/ /*@unchecked@*/
 634 static const char * pgpPublicRSA[] = {
 635     "    n =",
 636     "    e =",
 637     NULL,
 638 };
 639
 640 /*@observer@*/ /*@unchecked@*/
 641 static const char * pgpSecretRSA[] = {
 642     "    d =",
 643     "    p =",
 644     "    q =",
 645     "    u =",
 646     NULL,
 647 };
 648
 649 /*@observer@*/ /*@unchecked@*/
 650 static const char * pgpPublicDSA[] = {
 651     "    p =",
 652     "    q =",
 653     "    g =",
 654     "    y =",
 655     NULL,
 656 };
 657
 658 /*@observer@*/ /*@unchecked@*/
 659 static const char * pgpSecretDSA[] = {
 660     "    x =",
 661     NULL,
 662 };
 663
 664 /*@observer@*/ /*@unchecked@*/
 665 static const char * pgpPublicELGAMAL[] = {
 666     "    p =",
 667     "    g =",
 668     "    y =",
 669     NULL,
 670 };
 671
 672 /*@observer@*/ /*@unchecked@*/
 673 static const char * pgpSecretELGAMAL[] = {
 674     "    x =",
 675     NULL,
 676 };
 677 /*@=varuse =readonlytrans @*/
 678
 679 static const byte * pgpPrtPubkeyParams(byte pubkey_algo,
 680                 /*@returned@*/ const byte *p, const byte *h, unsigned int hlen)
 681         /*@globals fileSystem, internalState @*/
 682         /*@modifies fileSystem, internalState @*/
 683 {
 684     int i;
 685
 686     for (i = 0; p < &h[hlen]; i++, p += pgpMpiLen(p)) {
 687         if (pubkey_algo == PGPPUBKEYALGO_RSA) {
 688             if (i >= 2) break;
 689             if (_dig) {
 690                 switch (i) {
 691                 case 0:         /* n */
 692                     mp32bsethex(&_dig->rsa_pk.n, pgpMpiHex(p));
 693                     /* Get the keyid */
 694                     if (_digp) {
 695                         uint32* np = _dig->rsa_pk.n.modl;
 696                         uint32  nsize = _dig->rsa_pk.n.size;
 697                         uint32 keyid[2];
 698                         #if WORDS_BIGENDIAN
 699                         keyid[0] = np[nsize-2];
 700                         keyid[1] = np[nsize-1];
 701                         #else
 702                         keyid[0] = swapu32(np[nsize-2]);
 703                         keyid[1] = swapu32(np[nsize-1]);
 704                         #endif
 705                         memcpy(_digp->signid, keyid, sizeof(_digp->signid));
 706                     }
 707 if (_debug && _print)
 708 fprintf(stderr, "\t     n = "),  mp32println(stderr, _dig->rsa_pk.n.size, _dig->rsa_pk.n.modl);
 709                     /*@switchbreak@*/ break;
 710                 case 1:         /* e */
 711                     mp32nsethex(&_dig->rsa_pk.e, pgpMpiHex(p));
 712 if (_debug && _print)
 713 fprintf(stderr, "\t     e = "),  mp32println(stderr, _dig->rsa_pk.e.size, _dig->rsa_pk.e.data);
 714                     /*@switchbreak@*/ break;
 715                 default:
 716                     /*@switchbreak@*/ break;
 717                 }
 718             }
 719             pgpPrtStr("", pgpPublicRSA[i]);
 720         } else if (pubkey_algo == PGPPUBKEYALGO_DSA) {
 721             if (i >= 4) break;
 722             if (_dig) {
 723                 switch (i) {
 724                 case 0:         /* p */
 725                     mp32bsethex(&_dig->p, pgpMpiHex(p));
 726 if (_debug && _print)
 727 fprintf(stderr, "\t     p = "),  mp32println(stderr, _dig->p.size, _dig->p.modl);
 728                     /*@switchbreak@*/ break;
 729                 case 1:         /* q */
 730                     mp32bsethex(&_dig->q, pgpMpiHex(p));
 731 if (_debug && _print)
 732 fprintf(stderr, "\t     q = "),  mp32println(stderr, _dig->q.size, _dig->q.modl);
 733                     /*@switchbreak@*/ break;
 734                 case 2:         /* g */
 735                     mp32nsethex(&_dig->g, pgpMpiHex(p));
 736 if (_debug && _print)
 737 fprintf(stderr, "\t     g = "),  mp32println(stderr, _dig->g.size, _dig->g.data);
 738                     /*@switchbreak@*/ break;
 739                 case 3:         /* y */
 740                     mp32nsethex(&_dig->y, pgpMpiHex(p));
 741 if (_debug && _print)
 742 fprintf(stderr, "\t     y = "),  mp32println(stderr, _dig->y.size, _dig->y.data);
 743                     /*@switchbreak@*/ break;
 744                 default:
 745                     /*@switchbreak@*/ break;
 746                 }
 747             }
 748             pgpPrtStr("", pgpPublicDSA[i]);
 749         } else if (pubkey_algo == PGPPUBKEYALGO_ELGAMAL_ENCRYPT) {
 750             if (i >= 3) break;
 751             pgpPrtStr("", pgpPublicELGAMAL[i]);
 752         } else {
 753             if (_print)
 754                 fprintf(stderr, "%7d", i);
 755         }
 756         pgpPrtStr("", pgpMpiStr(p));
 757         pgpPrtNL();
 758     }
 759
 760     return p;
 761 }
 762
 763 static const byte * pgpPrtSeckeyParams(/*@unused@*/ byte pubkey_algo,
 764                 /*@returned@*/ const byte *p, const byte *h, unsigned int hlen)
 765         /*@globals fileSystem @*/
 766         /*@modifies fileSystem @*/
 767 {
 768     int i;
 769
 770     switch (*p) {
 771     case 0:
 772         pgpPrtVal(" ", pgpSymkeyTbl, *p);
 773         break;
 774     case 255:
 775         p++;
 776         pgpPrtVal(" ", pgpSymkeyTbl, *p);
 777         switch (p[1]) {
 778         case 0x00:
 779             pgpPrtVal(" simple ", pgpHashTbl, p[2]);
 780             p += 2;
 781             /*@innerbreak@*/ break;
 782         case 0x01:
 783             pgpPrtVal(" salted ", pgpHashTbl, p[2]);
 784             pgpPrtHex("", p+3, 8);
 785             p += 10;
 786             /*@innerbreak@*/ break;
 787         case 0x03:
 788             pgpPrtVal(" iterated/salted ", pgpHashTbl, p[2]);
 789             /*@-shiftnegative -shiftimplementation @*/ /* FIX: unsigned cast */
 790             i = (16 + (p[11] & 0xf)) << ((p[11] >> 4) + 6);
 791             /*@=shiftnegative =shiftimplementation @*/
 792             pgpPrtHex("", p+3, 8);
 793             pgpPrtInt(" iter", i);
 794             p += 11;
 795             /*@innerbreak@*/ break;
 796         }
 797         break;
 798     default:
 799         pgpPrtVal(" ", pgpSymkeyTbl, *p);
 800         pgpPrtHex(" IV", p+1, 8);
 801         p += 8;
 802         break;
 803     }
 804     pgpPrtNL();
 805
 806     p++;
 807
 808 #ifdef  NOTYET  /* XXX encrypted MPI's need to be handled. */
 809     for (i = 0; p < &h[hlen]; i++, p += pgpMpiLen(p)) {
 810         if (pubkey_algo == PGPPUBKEYALGO_RSA) {
 811             if (pgpSecretRSA[i] == NULL) break;
 812             pgpPrtStr("", pgpSecretRSA[i]);
 813         } else if (pubkey_algo == PGPPUBKEYALGO_DSA) {
 814             if (pgpSecretDSA[i] == NULL) break;
 815             pgpPrtStr("", pgpSecretDSA[i]);
 816         } else if (pubkey_algo == PGPPUBKEYALGO_ELGAMAL_ENCRYPT) {
 817             if (pgpSecretELGAMAL[i] == NULL) break;
 818             pgpPrtStr("", pgpSecretELGAMAL[i]);
 819         } else {
 820             if (_print)
 821                 fprintf(stderr, "%7d", i);
 822         }
 823         pgpPrtStr("", pgpMpiStr(p));
 824         pgpPrtNL();
 825     }
 826 #else
 827     pgpPrtHex(" secret", p, (hlen - (p - h) - 2));
 828     pgpPrtNL();
 829     p += (hlen - (p - h) - 2);
 830 #endif
 831     pgpPrtHex(" checksum", p, 2);
 832     pgpPrtNL();
 833
 834     return p;
 835 }
 836
 837 int pgpPrtKey(pgpTag tag, const byte *h, unsigned int hlen)
 838         /*@globals _digp @*/
 839         /*@modifies *_digp @*/
 840 {
 841     byte version = *h;
 842     const byte * p;
 843     unsigned plen;
 844     time_t t;
 845     int rc;
 846
 847     switch (version) {
 848     case 3:
 849     {   pgpPktKeyV3 v = (pgpPktKeyV3)h;
 850         pgpPrtVal("V3 ", pgpTagTbl, tag);
 851         pgpPrtVal(" ", pgpPubkeyTbl, v->pubkey_algo);
 852         t = pgpGrab(v->time, sizeof(v->time));
 853         if (_print)
 854             fprintf(stderr, " %-24.24s(0x%08x)", ctime(&t), (unsigned)t);
 855         plen = pgpGrab(v->valid, sizeof(v->valid));
 856         if (plen != 0)
 857             fprintf(stderr, " valid %u days", plen);
 858         pgpPrtNL();
 859
 860         if (_digp && _digp->tag == tag) {
 861             _digp->version = v->version;
 862             memcpy(_digp->time, v->time, sizeof(_digp->time));
 863             _digp->pubkey_algo = v->pubkey_algo;
 864         }
 865
 866         p = ((byte *)v) + sizeof(*v);
 867         p = pgpPrtPubkeyParams(v->pubkey_algo, p, h, hlen);
 868         rc = 0;
 869     }   break;
 870     case 4:
 871     {   pgpPktKeyV4 v = (pgpPktKeyV4)h;
 872         pgpPrtVal("V4 ", pgpTagTbl, tag);
 873         pgpPrtVal(" ", pgpPubkeyTbl, v->pubkey_algo);
 874         t = pgpGrab(v->time, sizeof(v->time));
 875         if (_print)
 876             fprintf(stderr, " %-24.24s(0x%08x)", ctime(&t), (unsigned)t);
 877         pgpPrtNL();
 878
 879         if (_digp && _digp->tag == tag) {
 880             _digp->version = v->version;
 881             memcpy(_digp->time, v->time, sizeof(_digp->time));
 882             _digp->pubkey_algo = v->pubkey_algo;
 883         }
 884
 885         p = ((byte *)v) + sizeof(*v);
 886         p = pgpPrtPubkeyParams(v->pubkey_algo, p, h, hlen);
 887         if (!(tag == PGPTAG_PUBLIC_KEY || tag == PGPTAG_PUBLIC_SUBKEY))
 888             p = pgpPrtSeckeyParams(v->pubkey_algo, p, h, hlen);
 889         rc = 0;
 890     }   break;
 891     default:
 892         rc = 1;
 893         break;
 894     }
 895     return rc;
 896 }
 897
 898 /*@-boundswrite@*/
 899 int pgpPrtUserID(pgpTag tag, const byte *h, unsigned int hlen)
 900         /*@globals _digp @*/
 901         /*@modifies *_digp @*/
 902 {
 903     pgpPrtVal("", pgpTagTbl, tag);
 904     if (_print)
 905         fprintf(stderr, " \"%.*s\"", (int)hlen, (const char *)h);
 906     pgpPrtNL();
 907     if (_digp) {
 908         char * t;
 909         _digp->userid = t = memcpy(xmalloc(hlen+1), h, hlen);
 910         t[hlen] = '\0';
 911     }
 912     return 0;
 913 }
 914 /*@=boundswrite@*/
 915
 916 int pgpPrtComment(pgpTag tag, const byte *h, unsigned int hlen)
 917 {
 918     int i = hlen;
 919
 920     pgpPrtVal("", pgpTagTbl, tag);
 921     if (_print)
 922         fprintf(stderr, " ");
 923     while (i > 0) {
 924         int j;
 925         if (*h >= ' ' && *h <= 'z') {
 926             if (_print)
 927                 fprintf(stderr, "%s", (const char *)h);
 928             j = strlen(h);
 929             while (h[j] == '\0')
 930                 j++;
 931         } else {
 932             pgpPrtHex("", h, i);
 933             j = i;
 934         }
 935         i -= j;
 936         h += j;
 937     }
 938     pgpPrtNL();
 939     return 0;
 940 }
 941
 942 int pgpPrtPkt(const byte *pkt, unsigned int pleft)
 943 {
 944     unsigned int val = *pkt;
 945     unsigned int pktlen;
 946     pgpTag tag;
 947     unsigned int plen;
 948     const byte *h;
 949     unsigned int hlen = 0;
 950     int rc = 0;
 951
 952     /* XXX can't deal with these. */
 953     if (!(val & 0x80))
 954         return -1;
 955
 956     if (val & 0x40) {
 957         tag = (val & 0x3f);
 958         plen = pgpLen(pkt+1, &hlen);
 959     } else {
 960         tag = (val >> 2) & 0xf;
 961         plen = (1 << (val & 0x3));
 962         hlen = pgpGrab(pkt+1, plen);
 963     }
 964
 965     pktlen = 1 + plen + hlen;
 966     if (pktlen > pleft)
 967         return -1;
 968
 969     h = pkt + 1 + plen;
 970     switch (tag) {
 971     case PGPTAG_SIGNATURE:
 972         rc = pgpPrtSig(tag, h, hlen);
 973         break;
 974     case PGPTAG_PUBLIC_KEY:
 975     case PGPTAG_PUBLIC_SUBKEY:
 976         rc = pgpPrtKey(tag, h, hlen);
 977         break;
 978     case PGPTAG_SECRET_KEY:
 979     case PGPTAG_SECRET_SUBKEY:
 980         rc = pgpPrtKey(tag, h, hlen);
 981         break;
 982     case PGPTAG_USER_ID:
 983         rc = pgpPrtUserID(tag, h, hlen);
 984         break;
 985     case PGPTAG_COMMENT:
 986     case PGPTAG_COMMENT_OLD:
 987         rc = pgpPrtComment(tag, h, hlen);
 988         break;
 989
 990     case PGPTAG_RESERVED:
 991     case PGPTAG_PUBLIC_SESSION_KEY:
 992     case PGPTAG_SYMMETRIC_SESSION_KEY:
 993     case PGPTAG_COMPRESSED_DATA:
 994     case PGPTAG_SYMMETRIC_DATA:
 995     case PGPTAG_MARKER:
 996     case PGPTAG_LITERAL_DATA:
 997     case PGPTAG_TRUST:
 998     case PGPTAG_PHOTOID:
 999     case PGPTAG_ENCRYPTED_MDC:
1000     case PGPTAG_MDC:
1001     case PGPTAG_PRIVATE_60:
1002     case PGPTAG_PRIVATE_62:
1003     case PGPTAG_CONTROL:
1004     default:
1005         pgpPrtVal("", pgpTagTbl, tag);
1006         pgpPrtHex("", h, hlen);
1007         pgpPrtNL();
1008         break;
1009     }
1010
1011     return (rc ? -1 : pktlen);
1012 }
1013
1014 pgpDig pgpNewDig(void)
1015 {
1016     pgpDig dig = xcalloc(1, sizeof(*dig));
1017     return dig;
1018 }
1019
1020 /*@-boundswrite@*/
1021 void pgpCleanDig(pgpDig dig)
1022 {
1023     if (dig != NULL) {
1024         int i;
1025         dig->signature.userid = _free(dig->signature.userid);
1026         dig->pubkey.userid = _free(dig->pubkey.userid);
1027         dig->signature.hash = _free(dig->signature.hash);
1028         dig->pubkey.hash = _free(dig->pubkey.hash);
1029         /*@-unqualifiedtrans@*/ /* FIX: double indirection */
1030         for (i = 0; i < 4; i++) {
1031             dig->signature.params[i] = _free(dig->signature.params[i]);
1032             dig->pubkey.params[i] = _free(dig->pubkey.params[i]);
1033         }
1034         /*@=unqualifiedtrans@*/
1035
1036         memset(&dig->signature, 0, sizeof(dig->signature));
1037         memset(&dig->pubkey, 0, sizeof(dig->pubkey));
1038
1039         dig->md5 = _free(dig->md5);
1040         dig->sha1 = _free(dig->sha1);
1041         mp32nfree(&dig->hm);
1042         mp32nfree(&dig->r);
1043         mp32nfree(&dig->s);
1044
1045         (void) rsapkFree(&dig->rsa_pk);
1046         mp32nfree(&dig->m);
1047         mp32nfree(&dig->c);
1048         mp32nfree(&dig->rsahm);
1049     }
1050 /*@-nullstate@*/
1051     return;
1052 /*@=nullstate@*/
1053 }
1054 /*@=boundswrite@*/
1055
1056 pgpDig pgpFreeDig(/*@only@*/ /*@null@*/ pgpDig dig)
1057         /*@modifies dig @*/
1058 {
1059     if (dig != NULL) {
1060
1061         /* DUmp the signature/pubkey data. */
1062         pgpCleanDig(dig);
1063
1064         /*@-branchstate@*/
1065         if (dig->hdrsha1ctx != NULL)
1066             (void) rpmDigestFinal(dig->hdrsha1ctx, NULL, NULL, 0);
1067         /*@=branchstate@*/
1068         dig->hdrsha1ctx = NULL;
1069
1070         /*@-branchstate@*/
1071         if (dig->sha1ctx != NULL)
1072             (void) rpmDigestFinal(dig->sha1ctx, NULL, NULL, 0);
1073         /*@=branchstate@*/
1074         dig->sha1ctx = NULL;
1075
1076         mp32bfree(&dig->p);
1077         mp32bfree(&dig->q);
1078         mp32nfree(&dig->g);
1079         mp32nfree(&dig->y);
1080         mp32nfree(&dig->hm);
1081         mp32nfree(&dig->r);
1082         mp32nfree(&dig->s);
1083
1084 #ifdef  NOTYET
1085         /*@-branchstate@*/
1086         if (dig->hdrmd5ctx != NULL)
1087             (void) rpmDigestFinal(dig->hdrmd5ctx, NULL, NULL, 0);
1088         /*@=branchstate@*/
1089         dig->hdrmd5ctx = NULL;
1090 #endif
1091
1092         /*@-branchstate@*/
1093         if (dig->md5ctx != NULL)
1094             (void) rpmDigestFinal(dig->md5ctx, NULL, NULL, 0);
1095         /*@=branchstate@*/
1096         dig->md5ctx = NULL;
1097
1098         mp32bfree(&dig->rsa_pk.n);
1099         mp32nfree(&dig->rsa_pk.e);
1100         mp32nfree(&dig->m);
1101         mp32nfree(&dig->c);
1102         mp32nfree(&dig->hm);
1103
1104         dig = _free(dig);
1105     }
1106     return dig;
1107 }
1108
1109 int pgpPrtPkts(const byte * pkts, unsigned int pktlen, pgpDig dig, int printing)
1110         /*@globals _dig, _digp, _print @*/
1111         /*@modifies _dig, _digp, *_digp, _print @*/
1112 {
1113     unsigned int val = *pkts;
1114     const byte *p;
1115     unsigned int pleft;
1116     int len;
1117
1118     _print = printing;
1119     _dig = dig;
1120     if (dig != NULL && (val & 0x80)) {
1121         pgpTag tag = (val & 0x40) ? (val & 0x3f) : ((val >> 2) & 0xf);
1122         _digp = (tag == PGPTAG_SIGNATURE) ? &_dig->signature : &_dig->pubkey;
1123         _digp->tag = tag;
1124     } else
1125         _digp = NULL;
1126
1127     for (p = pkts, pleft = pktlen; p < (pkts + pktlen); p += len, pleft -= len) {
1128         len = pgpPrtPkt(p, pleft);
1129         if (len <= 0)
1130             return len;
1131         if (len > pleft)        /* XXX shouldn't happen */
1132             break;
1133     }
1134     return 0;
1135 }
1136
1137 /*@-boundswrite@*/
1138 pgpArmor pgpReadPkts(const char * fn, const byte ** pkt, size_t * pktlen)
1139 {
1140     const byte * b = NULL;
1141     ssize_t blen;
1142     const char * enc = NULL;
1143     const char * crcenc = NULL;
1144     byte * dec;
1145     byte * crcdec;
1146     size_t declen;
1147     size_t crclen;
1148     uint32 crcpkt, crc;
1149     const char * armortype = NULL;
1150     char * t, * te;
1151     int pstate = 0;
1152     pgpArmor ec = PGPARMOR_ERROR;       /* XXX assume failure */
1153     int rc;
1154
1155     rc = rpmioSlurp(fn, &b, &blen);
1156     if (rc || b == NULL || blen <= 0) {
1157         goto exit;
1158     }
1159
1160     if (pgpIsPkt(b)) {
1161 #ifdef NOTYET   /* XXX ASCII Pubkeys only, please. */
1162         ec = 0; /* XXX fish out pkt type. */
1163 #endif
1164         goto exit;
1165     }
1166
1167 #define TOKEQ(_s, _tok) (!strncmp((_s), (_tok), sizeof(_tok)-1))
1168
1169     for (t = (char *)b; t && *t; t = te) {
1170         if ((te = strchr(t, '\n')) == NULL)
1171             te = t + strlen(t);
1172         else
1173             te++;
1174
1175         switch (pstate) {
1176         case 0:
1177             armortype = NULL;
1178             if (!TOKEQ(t, "-----BEGIN PGP "))
1179                 continue;
1180             t += sizeof("-----BEGIN PGP ")-1;
1181
1182             rc = pgpValTok(pgpArmorTbl, t, te);
1183             if (rc < 0)
1184                 goto exit;
1185             if (rc != PGPARMOR_PUBKEY)  /* XXX ASCII Pubkeys only, please. */
1186                 continue;
1187             armortype = t;
1188
1189             t = te - (sizeof("-----\n")-1);
1190             if (!TOKEQ(t, "-----\n"))
1191                 continue;
1192             *t = '\0';
1193             pstate++;
1194             /*@switchbreak@*/ break;
1195         case 1:
1196             enc = NULL;
1197             rc = pgpValTok(pgpArmorKeyTbl, t, te);
1198             if (rc >= 0)
1199                 continue;
1200             if (*t != '\n') {
1201                 pstate = 0;
1202                 continue;
1203             }
1204             enc = te;           /* Start of encoded packets */
1205             pstate++;
1206             /*@switchbreak@*/ break;
1207         case 2:
1208             crcenc = NULL;
1209             if (*t != '=')
1210                 continue;
1211             *t++ = '\0';        /* Terminate encoded packets */
1212             crcenc = t;         /* Start of encoded crc */
1213             pstate++;
1214             /*@switchbreak@*/ break;
1215         case 3:
1216             pstate = 0;
1217             if (!TOKEQ(t, "-----END PGP "))
1218                 goto exit;
1219             *t = '\0';          /* Terminate encoded crc */
1220             t += sizeof("-----END PGP ")-1;
1221
1222             if (armortype == NULL) /* XXX can't happen */
1223                 continue;
1224             rc = strncmp(t, armortype, strlen(armortype));
1225             if (rc)
1226                 continue;
1227
1228             t = te - (sizeof("-----\n")-1);
1229             if (!TOKEQ(t, "-----\n"))
1230                 goto exit;
1231
1232             if (b64decode(crcenc, (void **)&crcdec, &crclen) != 0)
1233                 continue;
1234             crcpkt = pgpGrab(crcdec, crclen);
1235             crcdec = _free(crcdec);
1236             if (b64decode(enc, (void **)&dec, &declen) != 0)
1237                 goto exit;
1238             crc = pgpCRC(dec, declen);
1239             if (crcpkt != crc)
1240                 goto exit;
1241             b = _free(b);
1242             b = dec;
1243             blen = declen;
1244             ec = PGPARMOR_PUBKEY;       /* XXX ASCII Pubkeys only, please. */
1245             goto exit;
1246             /*@notreached@*/ /*@switchbreak@*/ break;
1247         }
1248     }
1249     ec = PGPARMOR_NONE;
1250
1251 exit:
1252     if (ec > PGPARMOR_NONE && pkt)
1253         *pkt = b;
1254     else if (b != NULL)
1255         b = _free(b);
1256     if (pktlen)
1257         *pktlen = blen;
1258     return ec;
1259 }
1260 /*@=boundswrite@*/
1261
1262 char * pgpArmorWrap(int atype, const unsigned char * s, size_t ns)
1263 {
1264     const char * enc;
1265     char * t;
1266     size_t nt;
1267     char * val;
1268     int lc;
1269
1270     nt = ((ns + 2) / 3) * 4;
1271     /*@-globs@*/
1272     /* Add additional bytes necessary for eol string(s). */
1273     if (b64encode_chars_per_line > 0 && b64encode_eolstr != NULL) {
1274         lc = (nt + b64encode_chars_per_line - 1) / b64encode_chars_per_line;
1275        if (((nt + b64encode_chars_per_line - 1) % b64encode_chars_per_line) != 0)
1276         ++lc;
1277         nt += lc * strlen(b64encode_eolstr);
1278     }
1279     /*@=globs@*/
1280
1281     nt += 512;  /* XXX slop for armor and crc */
1282
1283 /*@-boundswrite@*/
1284     val = t = xmalloc(nt + 1);
1285     *t = '\0';
1286     t = stpcpy(t, "-----BEGIN PGP ");
1287     t = stpcpy(t, pgpValStr(pgpArmorTbl, atype));
1288     /*@-globs@*/
1289     t = stpcpy( stpcpy(t, "-----\nVersion: rpm-"), VERSION);
1290     /*@=globs@*/
1291     t = stpcpy(t, " (beecrypt-2.2.0)\n\n");
1292
1293     if ((enc = b64encode(s, ns)) != NULL) {
1294         t = stpcpy(t, enc);
1295         enc = _free(enc);
1296         if ((enc = b64crc(s, ns)) != NULL) {
1297             *t++ = '=';
1298             t = stpcpy(t, enc);
1299             enc = _free(enc);
1300         }
1301     }
1302
1303     t = stpcpy(t, "-----END PGP ");
1304     t = stpcpy(t, pgpValStr(pgpArmorTbl, atype));
1305     t = stpcpy(t, "-----\n");
1306 /*@=boundswrite@*/
1307
1308     return val;
1309 }
1310
1311 /*@=boundsread@*/