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, write to the Free Software Foundation, Inc., 51
  19  * Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  20  */
  21
  22 #include <fcntl.h>
  23 #include <getopt.h>
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26 #include <string.h>
  27 #include <sys/types.h>
  28 #include <sys/stat.h>
  29 #include <unistd.h>
  30
  31 #include "armor.h"
  32 #include "charfuncs.h"
  33 #include "cleankey.h"
  34 #include "cleanup.h"
  35 #include "keydb.h"
  36 #include "keyid.h"
  37 #include "keyindex.h"
  38 #include "keystructs.h"
  39 #include "log.h"
  40 #include "mem.h"
  41 #include "merge.h"
  42 #include "onak-conf.h"
  43 #include "parsekey.h"
  44 #include "photoid.h"
  45 #include "version.h"
  46
  47 void find_keys(struct onak_dbctx *dbctx,
  48                 char *search, uint64_t keyid, uint8_t *fp, bool ishex,
  49                 bool isfp, bool fingerprint, bool skshash, bool exact,
  50                 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, fp, MAX_FINGERPRINT_LEN,
  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, fingerprint, 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("\tvindex   - search for a key and list it and its signatures");
 152 }
 153
 154 int main(int argc, char *argv[])
 155 {
 156         struct openpgp_packet_list      *packets = NULL;
 157         struct openpgp_packet_list      *list_end = NULL;
 158         struct openpgp_publickey        *keys = NULL;
 159         char                            *configfile = NULL;
 160         int                              rc = EXIT_SUCCESS;
 161         int                              result = 0;
 162         char                            *search = NULL;
 163         char                            *end = NULL;
 164         uint64_t                         keyid = 0;
 165         uint8_t                          fp[MAX_FINGERPRINT_LEN];
 166         int                              i;
 167         bool                             ishex = false;
 168         bool                             isfp = false;
 169         bool                             update = false;
 170         bool                             binary = false;
 171         bool                             fingerprint = false;
 172         bool                             skshash = false;
 173         int                              optchar;
 174         struct dump_ctx                  dumpstate;
 175         struct skshash                   hash;
 176         struct onak_dbctx               *dbctx;
 177
 178         while ((optchar = getopt(argc, argv, "bc:fsuv")) != -1 ) {
 179                 switch (optchar) {
 180                 case 'b':
 181                         binary = true;
 182                         break;
 183                 case 'c':
 184                         configfile = strdup(optarg);
 185                         break;
 186                 case 'f':
 187                         fingerprint = true;
 188                         break;
 189                 case 's':
 190                         skshash = true;
 191                         break;
 192                 case 'u':
 193                         update = true;
 194                         break;
 195                 case 'v':
 196                         setlogthreshold(LOGTHING_INFO);
 197                         break;
 198                 }
 199         }
 200
 201         readconfig(configfile);
 202         initlogthing("onak", config.logfile);
 203         catchsignals();
 204
 205         if ((argc - optind) < 1) {
 206                 usage();
 207         } else if (!strcmp("dump", argv[optind])) {
 208                 dbctx = config.dbinit(true);
 209                 dumpstate.count = dumpstate.filenum = 0;
 210                 dumpstate.maxcount = 100000;
 211                 dumpstate.fd = -1;
 212                 dumpstate.filebase = "keydump.%d.pgp";
 213                 dbctx->iterate_keys(dbctx, dump_func, &dumpstate);
 214                 if (dumpstate.fd != -1) {
 215                         close(dumpstate.fd);
 216                         dumpstate.fd = -1;
 217                 }
 218                 dbctx->cleanupdb(dbctx);
 219         } else if (!strcmp("add", argv[optind])) {
 220                 if (binary) {
 221                         result = read_openpgp_stream(stdin_getchar, NULL,
 222                                  &packets, 0);
 223                         logthing(LOGTHING_INFO,
 224                                         "read_openpgp_stream: %d", result);
 225                 } else {
 226                         dearmor_openpgp_stream(stdin_getchar, NULL, &packets);
 227                 }
 228                 if (packets != NULL) {
 229                         result = parse_keys(packets, &keys);
 230                         free_packet_list(packets);
 231                         packets = NULL;
 232                         logthing(LOGTHING_INFO, "Finished reading %d keys.",
 233                                         result);
 234
 235                         result = cleankeys(keys);
 236                         logthing(LOGTHING_INFO, "%d keys cleaned.",
 237                                         result);
 238
 239                         dbctx = config.dbinit(false);
 240                         logthing(LOGTHING_NOTICE, "Got %d new keys.",
 241                                         dbctx->update_keys(dbctx, &keys,
 242                                         false));
 243                         if (keys != NULL && update) {
 244                                 flatten_publickey(keys,
 245                                         &packets,
 246                                         &list_end);
 247                                 if (binary) {
 248                                         write_openpgp_stream(stdout_putchar,
 249                                                         NULL,
 250                                                         packets);
 251                                 } else {
 252                                         armor_openpgp_stream(stdout_putchar,
 253                                                 NULL,
 254                                                 packets);
 255                                 }
 256                                 free_packet_list(packets);
 257                                 packets = NULL;
 258                         }
 259                         dbctx->cleanupdb(dbctx);
 260                 } else {
 261                         rc = 1;
 262                         logthing(LOGTHING_NOTICE, "No keys read.");
 263                 }
 264
 265                 if (keys != NULL) {
 266                         free_publickey(keys);
 267                         keys = NULL;
 268                 } else {
 269                         rc = 1;
 270                         logthing(LOGTHING_NOTICE, "No changes.");
 271                 }
 272         } else if (!strcmp("clean", argv[optind])) {
 273                 if (binary) {
 274                         result = read_openpgp_stream(stdin_getchar, NULL,
 275                                  &packets, 0);
 276                         logthing(LOGTHING_INFO,
 277                                         "read_openpgp_stream: %d", result);
 278                 } else {
 279                         dearmor_openpgp_stream(stdin_getchar, NULL, &packets);
 280                 }
 281
 282                 if (packets != NULL) {
 283                         result = parse_keys(packets, &keys);
 284                         free_packet_list(packets);
 285                         packets = NULL;
 286                         logthing(LOGTHING_INFO, "Finished reading %d keys.",
 287                                         result);
 288
 289                         if (keys != NULL) {
 290                                 result = cleankeys(keys);
 291                                 logthing(LOGTHING_INFO, "%d keys cleaned.",
 292                                                 result);
 293
 294                                 flatten_publickey(keys,
 295                                         &packets,
 296                                         &list_end);
 297
 298                                 if (binary) {
 299                                         write_openpgp_stream(stdout_putchar,
 300                                                         NULL,
 301                                                         packets);
 302                                 } else {
 303                                         armor_openpgp_stream(stdout_putchar,
 304                                                 NULL,
 305                                                 packets);
 306                                 }
 307                                 free_packet_list(packets);
 308                                 packets = NULL;
 309                         }
 310                 } else {
 311                         rc = 1;
 312                         logthing(LOGTHING_NOTICE, "No keys read.");
 313                 }
 314
 315                 if (keys != NULL) {
 316                         free_publickey(keys);
 317                         keys = NULL;
 318                 }
 319         } else if ((argc - optind) == 2) {
 320                 search = argv[optind+1];
 321                 if (search != NULL && strlen(search) == 42 &&
 322                                 search[0] == '0' && search[1] == 'x') {
 323                         for (i = 0; i < MAX_FINGERPRINT_LEN; i++) {
 324                                 fp[i] = (hex2bin(search[2 + i * 2]) << 4) +
 325                                                 hex2bin(search[3 + i * 2]);
 326                         }
 327                         isfp = true;
 328                 } else if (search != NULL) {
 329                         keyid = strtoul(search, &end, 16);
 330                         if (*search != 0 &&
 331                                         end != NULL &&
 332                                         *end == 0) {
 333                                 ishex = true;
 334                         }
 335                 }
 336                 dbctx = config.dbinit(false);
 337                 if (!strcmp("index", argv[optind])) {
 338                         find_keys(dbctx, search, keyid, fp, ishex, isfp,
 339                                         fingerprint, skshash,
 340                                         false, false);
 341                 } else if (!strcmp("vindex", argv[optind])) {
 342                         find_keys(dbctx, search, keyid, fp, ishex, isfp,
 343                                         fingerprint, skshash,
 344                                         false, true);
 345                 } else if (!strcmp("getphoto", argv[optind])) {
 346                         if (!ishex) {
 347                                 puts("Can't get a key on uid text."
 348                                         " You must supply a keyid.");
 349                         } else if (dbctx->fetch_key_id(dbctx, keyid, &keys,
 350                                         false)) {
 351                                 unsigned char *photo = NULL;
 352                                 size_t         length = 0;
 353
 354                                 if (getphoto(keys, 0, &photo,
 355                                                 &length) == ONAK_E_OK) {
 356                                         fwrite(photo,
 357                                                 1,
 358                                                 length,
 359                                                 stdout);
 360                                 }
 361                                 free_publickey(keys);
 362                                 keys = NULL;
 363                         } else {
 364                                 puts("Key not found");
 365                         }
 366                 } else if (!strcmp("delete", argv[optind])) {
 367                         dbctx->delete_key(dbctx,
 368                                         dbctx->getfullkeyid(dbctx, keyid),
 369                                         false);
 370                 } else if (!strcmp("get", argv[optind])) {
 371                         if (!(ishex || isfp)) {
 372                                 puts("Can't get a key on uid text."
 373                                         " You must supply a keyid / "
 374                                         "fingerprint.");
 375                         } else if ((isfp &&
 376                                         dbctx->fetch_key_fp(dbctx, fp,
 377                                                 MAX_FINGERPRINT_LEN,
 378                                                 &keys, false)) ||
 379                                         (ishex &&
 380                                         dbctx->fetch_key_id(dbctx, keyid,
 381                                                 &keys, false))) {
 382                                 logthing(LOGTHING_INFO, "Got key.");
 383                                 flatten_publickey(keys,
 384                                                 &packets,
 385                                                 &list_end);
 386                                 free_publickey(keys);
 387                                 if (binary) {
 388                                         write_openpgp_stream(stdout_putchar,
 389                                                 NULL,
 390                                                 packets);
 391                                 } else {
 392                                         armor_openpgp_stream(stdout_putchar,
 393                                                 NULL,
 394                                                 packets);
 395                                 }
 396                                 free_packet_list(packets);
 397                                 packets = NULL;
 398                         } else {
 399                                 puts("Key not found");
 400                         }
 401                 } else if (!strcmp("hget", argv[optind])) {
 402                         if (!parse_skshash(search, &hash)) {
 403                                 puts("Couldn't parse sks hash.");
 404                         } else if (dbctx->fetch_key_skshash(dbctx, &hash,
 405                                         &keys)) {
 406                                 logthing(LOGTHING_INFO, "Got key.");
 407                                 flatten_publickey(keys,
 408                                                 &packets,
 409                                                 &list_end);
 410                                 free_publickey(keys);
 411                                 if (binary) {
 412                                         write_openpgp_stream(stdout_putchar,
 413                                                 NULL,
 414                                                 packets);
 415                                 } else {
 416                                         armor_openpgp_stream(stdout_putchar,
 417                                                 NULL,
 418                                                 packets);
 419                                 }
 420                                 free_packet_list(packets);
 421                                 packets = NULL;
 422                         } else {
 423                                 puts("Key not found");
 424                         }
 425                 }
 426                 dbctx->cleanupdb(dbctx);
 427         } else {
 428                 usage();
 429         }
 430
 431         cleanuplogthing();
 432         cleanupconfig();
 433
 434         return rc;
 435 }