LCOV - code coverage report
Current view: top level - src - keysign.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 34 78 43.6 %
Date: 2018-11-14 16:53:58 Functions: 4 6 66.7 %

          Line data    Source code
       1             : /* keysign.c - OpenPGP key signing
       2             :  * Copyright (C) 2016 g10 Code GmbH
       3             :  *
       4             :  * This file is part of GPGME.
       5             :  *
       6             :  * GPGME is free software; you can redistribute it and/or modify it
       7             :  * under the terms of the GNU Lesser General Public License as
       8             :  * published by the Free Software Foundation; either version 2.1 of
       9             :  * the License, or (at your option) any later version.
      10             :  *
      11             :  * GPGME is distributed in the hope that it will be useful, but
      12             :  * WITHOUT ANY WARRANTY; without even the implied warranty of
      13             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      14             :  * Lesser General Public License for more details.
      15             :  *
      16             :  * You should have received a copy of the GNU Lesser General Public
      17             :  * License along with this program; if not, see <https://www.gnu.org/licenses/>.
      18             :  */
      19             : 
      20             : #if HAVE_CONFIG_H
      21             : #include <config.h>
      22             : #endif
      23             : #include <stdlib.h>
      24             : #include <string.h>
      25             : #include <errno.h>
      26             : 
      27             : #include "gpgme.h"
      28             : #include "debug.h"
      29             : #include "context.h"
      30             : #include "ops.h"
      31             : #include "util.h"
      32             : 
      33             : 
      34             : typedef struct
      35             : {
      36             :   /* The error code from a FAILURE status line or 0.  */
      37             :   gpg_error_t failure_code;
      38             : 
      39             :   /* The error code from certain ERROR status lines or 0.  */
      40             :   gpg_error_t error_code;
      41             : 
      42             : } *op_data_t;
      43             : 
      44             : 
      45             : static void
      46           8 : release_op_data (void *hook)
      47             : {
      48           8 :   op_data_t opd = (op_data_t) hook;
      49             : 
      50             :   (void)opd;
      51           8 : }
      52             : 
      53             : 
      54             : /* Parse an error status line.  Return the error location and the
      55             :    error code.  The function may modify ARGS. */
      56             : static char *
      57           0 : parse_error (char *args, gpg_error_t *r_err)
      58             : {
      59           0 :   char *where = strchr (args, ' ');
      60             :   char *which;
      61             : 
      62           0 :   if (where)
      63             :     {
      64           0 :       *where = '\0';
      65           0 :       which = where + 1;
      66             : 
      67           0 :       where = strchr (which, ' ');
      68           0 :       if (where)
      69           0 :         *where = '\0';
      70             : 
      71           0 :       where = args;
      72             :     }
      73             :   else
      74             :     {
      75           0 :       *r_err = trace_gpg_error (GPG_ERR_INV_ENGINE);
      76           0 :       return NULL;
      77             :     }
      78             : 
      79           0 :   *r_err = atoi (which);
      80             : 
      81           0 :   return where;
      82             : }
      83             : 
      84             : 
      85             : static gpgme_error_t
      86          26 : keysign_status_handler (void *priv, gpgme_status_code_t code, char *args)
      87             : {
      88          26 :   gpgme_ctx_t ctx = (gpgme_ctx_t) priv;
      89             :   gpgme_error_t err;
      90             :   void *hook;
      91             :   op_data_t opd;
      92             :   char *loc;
      93             : 
      94             :   /* Pipe the status code through the progress status handler.  */
      95          26 :   err = _gpgme_progress_status_handler (ctx, code, args);
      96          26 :   if (err)
      97           0 :     return err;
      98             : 
      99          26 :   err = _gpgme_op_data_lookup (ctx, OPDATA_KEYSIGN, &hook, -1, NULL);
     100          26 :   opd = hook;
     101          26 :   if (err)
     102           0 :     return err;
     103             : 
     104          26 :   switch (code)
     105             :     {
     106             :     case GPGME_STATUS_ERROR:
     107           0 :       loc = parse_error (args, &err);
     108           0 :       if (!loc)
     109           0 :         return err;
     110           0 :       if (!opd->error_code)
     111           0 :         opd->error_code = err;
     112           0 :       break;
     113             : 
     114             :     case GPGME_STATUS_FAILURE:
     115           0 :       opd->failure_code = _gpgme_parse_failure (args);
     116           0 :       break;
     117             : 
     118             :     case GPGME_STATUS_EOF:
     119           8 :       if (opd->error_code)
     120           0 :         return opd->error_code;
     121           8 :       else if (opd->failure_code)
     122           0 :         return opd->failure_code;
     123           8 :       break;
     124             : 
     125             :     case GPGME_STATUS_INQUIRE_MAXLEN:
     126           0 :       if (ctx->status_cb && !ctx->full_status)
     127             :         {
     128           0 :           err = ctx->status_cb (ctx->status_cb_value, "INQUIRE_MAXLEN", args);
     129           0 :           if (err)
     130           0 :             return err;
     131             :         }
     132           0 :       break;
     133             : 
     134             :     default:
     135          18 :       break;
     136             :     }
     137          26 :   return 0;
     138             : }
     139             : 
     140             : 
     141             : /* Sign the USERID of KEY using the current set of signers.  If USERID
     142             :  * is NULL, sign all user ids.  To put several user ids into USERID,
     143             :  * separate them by LF and set the flag GPGME_KEYSIGN_LFSEP.  */
     144             : static gpgme_error_t
     145           8 : keysign_start (gpgme_ctx_t ctx, int synchronous,
     146             :                gpgme_key_t key, const char *userid,
     147             :                unsigned long expires, unsigned int flags)
     148             : {
     149             :   gpgme_error_t err;
     150             :   void *hook;
     151             :   op_data_t opd;
     152             : 
     153           8 :   if (ctx->protocol != GPGME_PROTOCOL_OPENPGP)
     154           0 :     return gpgme_error (GPG_ERR_UNSUPPORTED_PROTOCOL);
     155             : 
     156           8 :   err = _gpgme_op_reset (ctx, synchronous);
     157           8 :   if (err)
     158           0 :     return err;
     159             : 
     160           8 :   if (!key)
     161           0 :     return gpg_error (GPG_ERR_INV_ARG);
     162             : 
     163           8 :   err = _gpgme_op_data_lookup (ctx, OPDATA_KEYSIGN, &hook,
     164             :                                sizeof (*opd), release_op_data);
     165           8 :   opd = hook;
     166           8 :   if (err)
     167           0 :     return err;
     168             : 
     169           8 :   _gpgme_engine_set_status_handler (ctx->engine, keysign_status_handler, ctx);
     170             : 
     171           8 :   if (ctx->passphrase_cb)
     172             :     {
     173           0 :       err = _gpgme_engine_set_command_handler
     174             :         (ctx->engine, _gpgme_passphrase_command_handler, ctx);
     175           0 :       if (err)
     176           0 :         return err;
     177             :     }
     178             : 
     179           8 :   return _gpgme_engine_op_keysign (ctx->engine,
     180             :                                    key, userid, expires, flags, ctx);
     181             : }
     182             : 
     183             : 
     184             : /* Sign the USERID of KEY using the current set of signers.  */
     185             : gpgme_error_t
     186           0 : gpgme_op_keysign_start (gpgme_ctx_t ctx, gpgme_key_t key, const char *userid,
     187             :                         unsigned long expires, unsigned int flags)
     188             : {
     189             :   gpgme_error_t err;
     190             : 
     191           0 :   TRACE_BEG3 (DEBUG_CTX, "gpgme_op_keysign_start", ctx,
     192             :               "key=%p, uid='%s' flags=0x%x", key, userid, flags);
     193             : 
     194           0 :   if (!ctx)
     195           0 :     return TRACE_ERR (gpg_error (GPG_ERR_INV_ARG));
     196             : 
     197           0 :   err = keysign_start (ctx, 0, key, userid, expires, flags);
     198           0 :   return TRACE_ERR (err);
     199             : }
     200             : 
     201             : 
     202             : gpgme_error_t
     203           8 : gpgme_op_keysign (gpgme_ctx_t ctx, gpgme_key_t key, const char *userid,
     204             :                   unsigned long expires, unsigned int flags)
     205             : {
     206             :   gpgme_error_t err;
     207             : 
     208           8 :   TRACE_BEG3 (DEBUG_CTX, "gpgme_op_keysign", ctx,
     209             :               "key=%p, uid='%s' flags=0x%x", key, userid, flags);
     210             : 
     211           8 :   if (!ctx)
     212           0 :     return TRACE_ERR (gpg_error (GPG_ERR_INV_ARG));
     213             : 
     214           8 :   err = keysign_start (ctx, 1, key, userid, expires, flags);
     215           8 :   if (!err)
     216           8 :     err = _gpgme_wait_one (ctx);
     217           8 :   return TRACE_ERR (err);
     218             : }

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