onak.c

   1 /*
   2  * onak.c - An OpenPGP keyserver.
   3  *
   4  * This is the main swiss army knife binary.
   5  *
   6  * Copyright 2002 Jonathan McDowell <noodles@earth.li>
   7  *
   8  * This program is free software: you can redistribute it and/or modify it
   9  * under the terms of the GNU General Public License as published by the Free
  10  * Software Foundation; version 2 of the License.
  11  *
  12  * This program is distributed in the hope that it will be useful, but WITHOUT
  13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
  15  * more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along with
  18  * this program.  If not, see <https://www.gnu.org/licenses/>.
  19  */
  20
  21 #include <fcntl.h>
  22 #include <getopt.h>
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25 #include <string.h>
  26 #include <sys/types.h>
  27 #include <sys/stat.h>
  28 #include <unistd.h>
  29
  30 #include "armor.h"
  31 #include "charfuncs.h"
  32 #include "cleankey.h"
  33 #include "cleanup.h"
  34 #include "keydb.h"
  35 #include "keyid.h"
  36 #include "keyindex.h"
  37 #include "keystructs.h"
  38 #include "log.h"
  39 #include "mem.h"
  40 #include "merge.h"
  41 #include "onak-conf.h"
  42 #include "parsekey.h"
  43 #include "photoid.h"
  44 #include "version.h"
  45
  46 void find_keys(struct onak_dbctx *dbctx,
  47                 char *search, uint64_t keyid,
  48                 struct openpgp_fingerprint *fingerprint,
  49                 bool ishex, bool isfp, bool dispfp, bool skshash,
  50                 bool exact, bool verbose)
  51 {
  52         struct openpgp_publickey *publickey = NULL;
  53         int count = 0;
  54
  55         if (ishex) {
  56                 count = dbctx->fetch_key_id(dbctx, keyid, &publickey,
  57                                 false);
  58         } else if (isfp) {
  59                 count = dbctx->fetch_key_fp(dbctx, fingerprint,
  60                                 &publickey, false);
  61         } else {
  62                 count = dbctx->fetch_key_text(dbctx, search, &publickey);
  63         }
  64         if (publickey != NULL) {
  65                 key_index(dbctx, publickey, verbose, dispfp, skshash,
  66                         false);
  67                 free_publickey(publickey);
  68         } else if (count == 0) {
  69                 puts("Key not found.");
  70         } else {
  71                 printf("Found %d keys, but maximum number to return is %d.\n",
  72                                 count,
  73                                 config.maxkeys);
  74                 puts("Try again with a more specific search.");
  75         }
  76 }
  77
  78 /**
  79  * @brief Context for the keyserver dumping function
  80  */
  81 struct dump_ctx {
  82         /** Keys we've dumped so far to this file */
  83         int count;
  84         /** Maximum keys to dump per file */
  85         int maxcount;
  86         /** File descriptor for the current dump file */
  87         int fd;
  88         /** Number of the current dump file */
  89         int filenum;
  90         /** Base filename to use for dump files */
  91         char *filebase;
  92 };
  93
  94 void dump_func(void *ctx, struct openpgp_publickey *key)
  95 {
  96         struct openpgp_packet_list *packets = NULL;
  97         struct openpgp_packet_list *list_end = NULL;
  98         struct dump_ctx *state;
  99         char filename[1024];
 100
 101         state = (struct dump_ctx *) ctx;
 102
 103         if (state->fd == -1 || state->count++ > state->maxcount) {
 104                 if (state->fd != -1) {
 105                         close(state->fd);
 106                         state->fd = -1;
 107                 }
 108                 snprintf(filename, 1023, state->filebase, state->filenum);
 109                 state->fd = open(filename, O_CREAT | O_WRONLY | O_TRUNC, 0640);
 110                 state->filenum++;
 111                 state->count = 0;
 112         }
 113         flatten_publickey(key, &packets, &list_end);
 114         write_openpgp_stream(file_putchar, &state->fd, packets);
 115         free_packet_list(packets);
 116         packets = list_end = NULL;
 117
 118         return;
 119 }
 120
 121 static uint8_t hex2bin(char c)
 122 {
 123         if (c >= '0' && c <= '9') {
 124                 return (c - '0');
 125         } else if (c >= 'a' && c <= 'f') {
 126                 return (c - 'a' + 10);
 127         } else if (c >= 'A' && c <= 'F') {
 128                 return (c - 'A' + 10);
 129         }
 130
 131         return 255;
 132 }
 133
 134 void usage(void) {
 135         puts("onak " ONAK_VERSION " - an OpenPGP keyserver.\n");
 136         puts("Usage:\n");
 137         puts("\tonak [options] <command> <parameters>\n");
 138         puts("\tCommands:\n");
 139         puts("\tadd      - read armored OpenPGP keys from stdin and add to the"
 140                 " keyserver");
 141         puts("\tclean    - read armored OpenPGP keys from stdin, run the"
 142                 " cleaning\n\t             routines against them and dump to"
 143                 " stdout");
 144         puts("\tdelete   - delete a given key from the keyserver");
 145         puts("\tdump     - dump all the keys from the keyserver to a file or"
 146                 " files\n\t           starting keydump*");
 147         puts("\tget      - retrieves the key requested from the keyserver");
 148         puts("\tgetphoto - retrieves the first photoid on the given key and"
 149                 " dumps to\n\t           stdout");
 150         puts("\tindex    - search for a key and list it");
 151         puts("\treindex  - retrieve and re-store a key in the backend db");
 152         puts("\tvindex   - search for a key and list it and its signatures");
 153 }
 154
 155 int main(int argc, char *argv[])
 156 {
 157         struct openpgp_packet_list      *packets = NULL;
 158         struct openpgp_packet_list      *list_end = NULL;
 159         struct openpgp_publickey        *keys = NULL;
 160         char                            *configfile = NULL;
 161         int                              rc = EXIT_SUCCESS;
 162         int                              result = 0;
 163         char                            *search = NULL;
 164         char                            *end = NULL;
 165         uint64_t                         keyid = 0;
 166         int                              i;
 167         bool                             ishex = false;
 168         bool                             isfp = false;
 169         bool                             update = false;
 170         bool                             binary = false;
 171         bool                             dispfp = false;
 172         bool                             skshash = false;
 173         int                              optchar;
 174         struct dump_ctx                  dumpstate;
 175         struct skshash                   hash;
 176         struct onak_dbctx               *dbctx;
 177         struct openpgp_fingerprint       fingerprint;
 178
 179         while ((optchar = getopt(argc, argv, "bc:fsuv")) != -1 ) {
 180                 switch (optchar) {
 181                 case 'b':
 182                         binary = true;
 183                         break;
 184                 case 'c':
 185                         configfile = strdup(optarg);
 186                         break;
 187                 case 'f':
 188                         dispfp = true;
 189                         break;
 190                 case 's':
 191                         skshash = true;
 192                         break;
 193                 case 'u':
 194                         update = true;
 195                         break;
 196                 case 'v':
 197                         setlogthreshold(LOGTHING_INFO);
 198                         break;
 199                 }
 200         }
 201
 202         readconfig(configfile);
 203         initlogthing("onak", config.logfile);
 204         catchsignals();
 205
 206         if ((argc - optind) < 1) {
 207                 usage();
 208         } else if (!strcmp("dump", argv[optind])) {
 209                 dbctx = config.dbinit(config.backend, true);
 210                 dumpstate.count = dumpstate.filenum = 0;
 211                 dumpstate.maxcount = 100000;
 212                 dumpstate.fd = -1;
 213                 dumpstate.filebase = "keydump.%d.pgp";
 214                 dbctx->iterate_keys(dbctx, dump_func, &dumpstate);
 215                 if (dumpstate.fd != -1) {
 216                         close(dumpstate.fd);
 217                         dumpstate.fd = -1;
 218                 }
 219                 dbctx->cleanupdb(dbctx);
 220         } else if (!strcmp("add", argv[optind])) {
 221                 if (binary) {
 222                         result = read_openpgp_stream(stdin_getchar, NULL,
 223                                  &packets, 0);
 224                         logthing(LOGTHING_INFO,
 225                                         "read_openpgp_stream: %d", result);
 226                 } else {
 227                         dearmor_openpgp_stream(stdin_getchar, NULL, &packets);
 228                 }
 229                 if (packets != NULL) {
 230                         result = parse_keys(packets, &keys);
 231                         free_packet_list(packets);
 232                         packets = NULL;
 233                         logthing(LOGTHING_INFO, "Finished reading %d keys.",
 234                                         result);
 235
 236                         result = cleankeys(&keys, config.clean_policies);
 237                         logthing(LOGTHING_INFO, "%d keys cleaned.",
 238                                         result);
 239
 240                         dbctx = config.dbinit(config.backend, false);
 241                         logthing(LOGTHING_NOTICE, "Got %d new keys.",
 242                                         dbctx->update_keys(dbctx, &keys,
 243                                         false));
 244                         if (keys != NULL && update) {
 245                                 flatten_publickey(keys,
 246                                         &packets,
 247                                         &list_end);
 248                                 if (binary) {
 249                                         write_openpgp_stream(stdout_putchar,
 250                                                         NULL,
 251                                                         packets);
 252                                 } else {
 253                                         armor_openpgp_stream(stdout_putchar,
 254                                                 NULL,
 255                                                 packets);
 256                                 }
 257                                 free_packet_list(packets);
 258                                 packets = NULL;
 259                         }
 260                         dbctx->cleanupdb(dbctx);
 261                 } else {
 262                         rc = 1;
 263                         logthing(LOGTHING_NOTICE, "No keys read.");
 264                 }
 265
 266                 if (keys != NULL) {
 267                         free_publickey(keys);
 268                         keys = NULL;
 269                 } else {
 270                         rc = 1;
 271                         logthing(LOGTHING_NOTICE, "No changes.");
 272                 }
 273         } else if (!strcmp("clean", argv[optind])) {
 274                 if (binary) {
 275                         result = read_openpgp_stream(stdin_getchar, NULL,
 276                                  &packets, 0);
 277                         logthing(LOGTHING_INFO,
 278                                         "read_openpgp_stream: %d", result);
 279                 } else {
 280                         dearmor_openpgp_stream(stdin_getchar, NULL, &packets);
 281                 }
 282
 283                 if (packets != NULL) {
 284                         result = parse_keys(packets, &keys);
 285                         free_packet_list(packets);
 286                         packets = NULL;
 287                         logthing(LOGTHING_INFO, "Finished reading %d keys.",
 288                                         result);
 289
 290                         if (keys != NULL) {
 291                                 result = cleankeys(&keys,
 292                                                 config.clean_policies);
 293                                 logthing(LOGTHING_INFO, "%d keys cleaned.",
 294                                                 result);
 295
 296                                 flatten_publickey(keys,
 297                                         &packets,
 298                                         &list_end);
 299
 300                                 if (binary) {
 301                                         write_openpgp_stream(stdout_putchar,
 302                                                         NULL,
 303                                                         packets);
 304                                 } else {
 305                                         armor_openpgp_stream(stdout_putchar,
 306                                                 NULL,
 307                                                 packets);
 308                                 }
 309                                 free_packet_list(packets);
 310                                 packets = NULL;
 311                         }
 312                 } else {
 313                         rc = 1;
 314                         logthing(LOGTHING_NOTICE, "No keys read.");
 315                 }
 316
 317                 if (keys != NULL) {
 318                         free_publickey(keys);
 319                         keys = NULL;
 320                 }
 321         } else if (!strcmp("dumpconfig", argv[optind])) {
 322                 if ((argc - optind) == 2) {
 323                         writeconfig(argv[optind + 1]);
 324                 } else {
 325                         /* Dump config to stdout */
 326                         writeconfig(NULL);
 327                 }
 328         } else if ((argc - optind) == 2) {
 329                 search = argv[optind+1];
 330                 if (search != NULL && strlen(search) == 42 &&
 331                                 search[0] == '0' && search[1] == 'x') {
 332                         fingerprint.length = MAX_FINGERPRINT_LEN;
 333                         for (i = 0; i < MAX_FINGERPRINT_LEN; i++) {
 334                                 fingerprint.fp[i] =
 335                                         (hex2bin(search[2 + i * 2]) << 4) +
 336                                                 hex2bin(search[3 + i * 2]);
 337                         }
 338                         isfp = true;
 339                 } else if (search != NULL) {
 340                         keyid = strtouq(search, &end, 16);
 341                         if (*search != 0 &&
 342                                         end != NULL &&
 343                                         *end == 0) {
 344                                 ishex = true;
 345                         }
 346                 }
 347                 dbctx = config.dbinit(config.backend, false);
 348                 if (!strcmp("index", argv[optind])) {
 349                         find_keys(dbctx, search, keyid, &fingerprint, ishex,
 350                                         isfp, dispfp, skshash,
 351                                         false, false);
 352                 } else if (!strcmp("vindex", argv[optind])) {
 353                         find_keys(dbctx, search, keyid, &fingerprint, ishex,
 354                                         isfp, dispfp, skshash,
 355                                         false, true);
 356                 } else if (!strcmp("getphoto", argv[optind])) {
 357                         if (!ishex) {
 358                                 puts("Can't get a key on uid text."
 359                                         " You must supply a keyid.");
 360                         } else if (dbctx->fetch_key_id(dbctx, keyid, &keys,
 361                                         false)) {
 362                                 unsigned char *photo = NULL;
 363                                 size_t         length = 0;
 364
 365                                 if (getphoto(keys, 0, &photo,
 366                                                 &length) == ONAK_E_OK) {
 367                                         fwrite(photo,
 368                                                 1,
 369                                                 length,
 370                                                 stdout);
 371                                 }
 372                                 free_publickey(keys);
 373                                 keys = NULL;
 374                         } else {
 375                                 puts("Key not found");
 376                         }
 377                 } else if (!strcmp("delete", argv[optind])) {
 378                         dbctx->delete_key(dbctx,
 379                                         dbctx->getfullkeyid(dbctx, keyid),
 380                                         false);
 381                 } else if (!strcmp("get", argv[optind])) {
 382                         if (!(ishex || isfp)) {
 383                                 puts("Can't get a key on uid text."
 384                                         " You must supply a keyid / "
 385                                         "fingerprint.");
 386                         } else if ((isfp &&
 387                                         dbctx->fetch_key_fp(dbctx,
 388                                                 &fingerprint,
 389                                                 &keys, false)) ||
 390                                         (ishex &&
 391                                         dbctx->fetch_key_id(dbctx, keyid,
 392                                                 &keys, false))) {
 393                                 logthing(LOGTHING_INFO, "Got key.");
 394                                 flatten_publickey(keys,
 395                                                 &packets,
 396                                                 &list_end);
 397                                 free_publickey(keys);
 398                                 if (binary) {
 399                                         write_openpgp_stream(stdout_putchar,
 400                                                 NULL,
 401                                                 packets);
 402                                 } else {
 403                                         armor_openpgp_stream(stdout_putchar,
 404                                                 NULL,
 405                                                 packets);
 406                                 }
 407                                 free_packet_list(packets);
 408                                 packets = NULL;
 409                         } else {
 410                                 puts("Key not found");
 411                         }
 412                 } else if (!strcmp("hget", argv[optind])) {
 413                         if (!parse_skshash(search, &hash)) {
 414                                 puts("Couldn't parse sks hash.");
 415                         } else if (dbctx->fetch_key_skshash(dbctx, &hash,
 416                                         &keys)) {
 417                                 logthing(LOGTHING_INFO, "Got key.");
 418                                 flatten_publickey(keys,
 419                                                 &packets,
 420                                                 &list_end);
 421                                 free_publickey(keys);
 422                                 if (binary) {
 423                                         write_openpgp_stream(stdout_putchar,
 424                                                 NULL,
 425                                                 packets);
 426                                 } else {
 427                                         armor_openpgp_stream(stdout_putchar,
 428                                                 NULL,
 429                                                 packets);
 430                                 }
 431                                 free_packet_list(packets);
 432                                 packets = NULL;
 433                         } else {
 434                                 puts("Key not found");
 435                         }
 436                 } else if (!strcmp("reindex", argv[optind])) {
 437                         dbctx->starttrans(dbctx);
 438                         if (dbctx->fetch_key_id(dbctx, keyid, &keys, true)) {
 439                                 dbctx->delete_key(dbctx, keyid, true);
 440                                 cleankeys(&keys, config.clean_policies);
 441                                 dbctx->store_key(dbctx, keys, true, false);
 442                         } else {
 443                                 puts("Key not found");
 444                         }
 445                         dbctx->endtrans(dbctx);
 446                 }
 447                 dbctx->cleanupdb(dbctx);
 448         } else {
 449                 usage();
 450         }
 451
 452         cleanuplogthing();
 453         cleanupconfig();
 454         free(configfile);
 455
 456         return rc;
 457 }