lookup.c

   1 /*
   2  * lookup.c - CGI to lookup keys.
   3  *
   4  * Copyright 2002-2005,2007-2009,2011 Jonathan McDowell <noodles@earth.li>
   5  *
   6  * This program is free software: you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by the Free
   8  * Software Foundation; version 2 of the License.
   9  *
  10  * This program is distributed in the hope that it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
  13  * more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along with
  16  * this program; if not, write to the Free Software Foundation, Inc., 51
  17  * Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  */
  19
  20 #include <inttypes.h>
  21 #include <stdbool.h>
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include <string.h>
  25 #include <unistd.h>
  26
  27 #include "armor.h"
  28 #include "charfuncs.h"
  29 #include "cleankey.h"
  30 #include "cleanup.h"
  31 #include "getcgi.h"
  32 #include "keydb.h"
  33 #include "keyid.h"
  34 #include "keyindex.h"
  35 #include "log.h"
  36 #include "mem.h"
  37 #include "onak-conf.h"
  38 #include "parsekey.h"
  39 #include "photoid.h"
  40 #include "version.h"
  41
  42 #define OP_UNKNOWN 0
  43 #define OP_GET     1
  44 #define OP_INDEX   2
  45 #define OP_VINDEX  3
  46 #define OP_PHOTO   4
  47 #define OP_HGET    5
  48
  49 void find_keys(char *search, uint64_t keyid, bool ishex,
  50                 bool fingerprint, bool skshash, bool exact, bool verbose,
  51                 bool mrhkp)
  52 {
  53         struct openpgp_publickey *publickey = NULL;
  54         int count = 0;
  55
  56         if (ishex) {
  57                 count = config.dbbackend->fetch_key(keyid, &publickey, false);
  58         } else {
  59                 count = config.dbbackend->fetch_key_text(search, &publickey);
  60         }
  61         if (publickey != NULL) {
  62                 if (mrhkp) {
  63                         printf("info:1:%d\n", count);
  64                         mrkey_index(publickey);
  65                 } else {
  66                         key_index(publickey, verbose, fingerprint, skshash,
  67                                 true);
  68                 }
  69                 free_publickey(publickey);
  70         } else if (count == 0) {
  71                 if (mrhkp) {
  72                         puts("info:1:0");
  73                 } else {
  74                         puts("Key not found.");
  75                 }
  76         } else {
  77                 if (mrhkp) {
  78                         puts("info:1:0");
  79                 } else {
  80                         printf("Found %d keys, but maximum number to return"
  81                                 " is %d.\n",
  82                                 count,
  83                                 config.maxkeys);
  84                         puts("Try again with a more specific search.");
  85                 }
  86         }
  87 }
  88
  89 int main(int argc, char *argv[])
  90 {
  91         char **params = NULL;
  92         int op = OP_UNKNOWN;
  93         int i;
  94         int indx = 0;
  95         bool fingerprint = false;
  96         bool skshash = false;
  97         bool exact = false;
  98         bool ishex = false;
  99         bool mrhkp = false;
 100         uint64_t keyid = 0;
 101         char *search = NULL;
 102         char *end = NULL;
 103         struct openpgp_publickey *publickey = NULL;
 104         struct openpgp_packet_list *packets = NULL;
 105         struct openpgp_packet_list *list_end = NULL;
 106         int result;
 107         struct skshash hash;
 108
 109         params = getcgivars(argc, argv);
 110         for (i = 0; params != NULL && params[i] != NULL; i += 2) {
 111                 if (!strcmp(params[i], "op")) {
 112                         if (!strcmp(params[i+1], "get")) {
 113                                 op = OP_GET;
 114                         } else if (!strcmp(params[i+1], "hget")) {
 115                                 op = OP_HGET;
 116                         } else if (!strcmp(params[i+1], "index")) {
 117                                 op = OP_INDEX;
 118                         } else if (!strcmp(params[i+1], "vindex")) {
 119                                 op = OP_VINDEX;
 120                         } else if (!strcmp(params[i+1], "photo")) {
 121                                 op = OP_PHOTO;
 122                         }
 123                 } else if (!strcmp(params[i], "search")) {
 124                         search = params[i+1];
 125                         params[i+1] = NULL;
 126                         if (search != NULL && strlen(search) == 42 &&
 127                                         search[0] == '0' && search[1] == 'x') {
 128                                 /*
 129                                  * Fingerprint. Truncate to last 64 bits for
 130                                  * now.
 131                                  */
 132                                 keyid = strtoull(&search[26], &end, 16);
 133                                 if (end != NULL && *end == 0) {
 134                                         ishex = true;
 135                                 }
 136                         } else if (search != NULL) {
 137                                 keyid = strtoull(search, &end, 16);
 138                                 if (*search != 0 &&
 139                                                 end != NULL &&
 140                                                 *end == 0) {
 141                                         ishex = true;
 142                                 }
 143                         }
 144                 } else if (!strcmp(params[i], "idx")) {
 145                         indx = atoi(params[i+1]);
 146                 } else if (!strcmp(params[i], "fingerprint")) {
 147                         if (!strcmp(params[i+1], "on")) {
 148                                 fingerprint = true;
 149                         }
 150                 } else if (!strcmp(params[i], "hash")) {
 151                         if (!strcmp(params[i+1], "on")) {
 152                                 skshash = true;
 153                         }
 154                 } else if (!strcmp(params[i], "exact")) {
 155                         if (!strcmp(params[i+1], "on")) {
 156                                 exact = true;
 157                         }
 158                 } else if (!strcmp(params[i], "options")) {
 159                         /*
 160                          * TODO: We should be smarter about this; options may
 161                          * have several entries. For now mr is the only valid
 162                          * one though.
 163                          */
 164                         if (!strcmp(params[i+1], "mr")) {
 165                                 mrhkp = true;
 166                         }
 167                 }
 168                 free(params[i]);
 169                 params[i] = NULL;
 170                 if (params[i+1] != NULL) {
 171                         free(params[i+1]);
 172                         params[i+1] = NULL;
 173                 }
 174         }
 175         if (params != NULL) {
 176                 free(params);
 177                 params = NULL;
 178         }
 179
 180         if (mrhkp) {
 181                 puts("Content-Type: text/plain\n");
 182         } else if (op == OP_PHOTO) {
 183                 puts("Content-Type: image/jpeg\n");
 184         } else {
 185                 start_html("Lookup of key");
 186         }
 187
 188         if (op == OP_UNKNOWN) {
 189                 puts("Error: No operation supplied.");
 190         } else if (search == NULL) {
 191                 puts("Error: No key to search for supplied.");
 192         } else {
 193                 readconfig(NULL);
 194                 initlogthing("lookup", config.logfile);
 195                 catchsignals();
 196                 config.dbbackend->initdb(false);
 197                 switch (op) {
 198                 case OP_GET:
 199                 case OP_HGET:
 200                         if (op == OP_HGET) {
 201                                 parse_skshash(search, &hash);
 202                                 result = config.dbbackend->fetch_key_skshash(
 203                                         &hash, &publickey);
 204                         } else if (ishex) {
 205                                 result = config.dbbackend->fetch_key(keyid,
 206                                         &publickey, false);
 207                         } else {
 208                                 result = config.dbbackend->fetch_key_text(
 209                                         search,
 210                                         &publickey);
 211                         }
 212                         if (result) {
 213                                 logthing(LOGTHING_NOTICE,
 214                                         "Found %d key(s) for search %s",
 215                                         result,
 216                                         search);
 217                                 puts("<pre>");
 218                                 cleankeys(publickey);
 219                                 flatten_publickey(publickey,
 220                                                         &packets,
 221                                                         &list_end);
 222                                 armor_openpgp_stream(stdout_putchar,
 223                                                 NULL,
 224                                                 packets);
 225                                 puts("</pre>");
 226                         } else {
 227                                 logthing(LOGTHING_NOTICE,
 228                                         "Failed to find key for search %s",
 229                                         search);
 230                                 puts("Key not found");
 231                         }
 232                         break;
 233                 case OP_INDEX:
 234                         find_keys(search, keyid, ishex, fingerprint, skshash,
 235                                         exact, false, mrhkp);
 236                         break;
 237                 case OP_VINDEX:
 238                         find_keys(search, keyid, ishex, fingerprint, skshash,
 239                                         exact, true, mrhkp);
 240                         break;
 241                 case OP_PHOTO:
 242                         if (config.dbbackend->fetch_key(keyid, &publickey,
 243                                         false)) {
 244                                 unsigned char *photo = NULL;
 245                                 size_t         length = 0;
 246
 247                                 if (getphoto(publickey, indx, &photo,
 248                                                 &length)) {
 249                                         fwrite(photo,
 250                                                         1,
 251                                                         length,
 252                                                         stdout);
 253                                 }
 254                                 free_publickey(publickey);
 255                                 publickey = NULL;
 256                         }
 257                         break;
 258                 default:
 259                         puts("Unknown operation!");
 260                 }
 261                 config.dbbackend->cleanupdb();
 262                 cleanuplogthing();
 263                 cleanupconfig();
 264         }
 265         if (!mrhkp) {
 266                 puts("<hr>");
 267                 puts("Produced by onak " ONAK_VERSION );
 268                 end_html();
 269         }
 270
 271         if (search != NULL) {
 272                 free(search);
 273                 search = NULL;
 274         }
 275
 276         return (EXIT_SUCCESS);
 277 }