LCOV - code coverage report
Current view: top level - common - t-exectool.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 70 95 73.7 %
Date: 2016-09-12 12:29:17 Functions: 5 5 100.0 %

          Line data    Source code
       1             : /* t-exectool.c - Module test for exectool.c
       2             :  * Copyright (C) 2016 g10 Code GmbH
       3             :  *
       4             :  * This file is part of GnuPG.
       5             :  *
       6             :  * GnuPG is free software; you can redistribute it and/or modify
       7             :  * it under the terms of the GNU General Public License as published by
       8             :  * the Free Software Foundation; either version 3 of the License, or
       9             :  * (at your option) any later version.
      10             :  *
      11             :  * GnuPG is distributed in the hope that it will be useful,
      12             :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      13             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      14             :  * GNU General Public License for more details.
      15             :  *
      16             :  * You should have received a copy of the GNU General Public License
      17             :  * along with this program; if not, see <http://www.gnu.org/licenses/>.
      18             :  */
      19             : 
      20             : #include <config.h>
      21             : #include <stdio.h>
      22             : #include <stdlib.h>
      23             : #include <errno.h>
      24             : #include <assert.h>
      25             : #include <unistd.h>
      26             : 
      27             : #include "util.h"
      28             : #include "exectool.h"
      29             : 
      30             : static int verbose;
      31             : 
      32             : #define fail(msg, err)                                           \
      33             :   do { fprintf (stderr, "%s:%d: %s failed: %s\n",                \
      34             :                 __FILE__,__LINE__, (msg), gpg_strerror (err));   \
      35             :     exit (1);                                                    \
      36             :   } while(0)
      37             : 
      38             : static void
      39           1 : test_executing_true (void)
      40             : {
      41             :   gpg_error_t err;
      42           1 :   const char *argv[] = { "/bin/true", NULL };
      43             :   char *result;
      44             :   size_t len;
      45             : 
      46           1 :   if (access (argv[0], X_OK))
      47             :     {
      48           0 :       fprintf (stderr, "skipping test: %s not executable: %s",
      49           0 :                argv[0], strerror (errno));
      50           1 :       return;
      51             :     }
      52             : 
      53           1 :   if (verbose)
      54           0 :     fprintf (stderr, "Executing %s...\n", argv[0]);
      55             : 
      56           1 :   err = gnupg_exec_tool (argv[0], &argv[1], "", &result, &len);
      57           1 :   if (err)
      58           0 :     fail ("gnupg_exec_tool", err);
      59             : 
      60           1 :   assert (result);
      61           1 :   assert (len == 0);
      62           1 :   free (result);
      63             : }
      64             : 
      65             : static void
      66           1 : test_executing_false (void)
      67             : {
      68             :   gpg_error_t err;
      69           1 :   const char *argv[] = { "/bin/false", NULL };
      70             :   char *result;
      71             :   size_t len;
      72             : 
      73           1 :   if (access (argv[0], X_OK))
      74             :     {
      75           0 :       fprintf (stderr, "skipping test: %s not executable: %s",
      76           0 :                argv[0], strerror (errno));
      77           1 :       return;
      78             :     }
      79             : 
      80           1 :   if (verbose)
      81           0 :     fprintf (stderr, "Executing %s...\n", argv[0]);
      82             : 
      83           1 :   err = gnupg_exec_tool (argv[0], &argv[1], "", &result, &len);
      84           1 :   assert (err == GPG_ERR_GENERAL);
      85             : }
      86             : 
      87             : static void
      88           2 : test_executing_cat (const char *vector)
      89             : {
      90             :   gpg_error_t err;
      91           2 :   const char *argv[] = { "/bin/cat", NULL };
      92             :   char *result;
      93             :   size_t len;
      94             : 
      95           2 :   if (access (argv[0], X_OK))
      96             :     {
      97           0 :       fprintf (stderr, "skipping test: %s not executable: %s",
      98           0 :                argv[0], strerror (errno));
      99           2 :       return;
     100             :     }
     101             : 
     102           2 :   if (verbose)
     103           0 :     fprintf (stderr, "Executing %s...\n", argv[0]);
     104             : 
     105           2 :   err = gnupg_exec_tool (argv[0], &argv[1], vector, &result, &len);
     106           2 :   if (err)
     107           0 :     fail ("gnupg_exec_tool", err);
     108             : 
     109           2 :   assert (result);
     110             : 
     111             :   /* gnupg_exec_tool returns the correct length... */
     112           2 :   assert (len == strlen (vector));
     113             :   /* ... but 0-terminates data for ease of use.  */
     114           2 :   assert (result[len] == 0);
     115             : 
     116           2 :   assert (strcmp (result, vector) == 0);
     117           2 :   free (result);
     118             : }
     119             : 
     120             : 
     121             : static void
     122           1 : test_catting_cat (void)
     123             : {
     124             :   gpg_error_t err;
     125           1 :   const char *argv[] = { "/bin/cat", "/bin/cat", NULL };
     126             :   char *result;
     127             :   size_t len;
     128             :   estream_t in;
     129             :   char *reference, *p;
     130             :   size_t reference_len;
     131             : 
     132           1 :   if (access (argv[0], X_OK))
     133             :     {
     134           0 :       fprintf (stderr, "skipping test: %s not executable: %s",
     135           0 :                argv[0], strerror (errno));
     136           0 :       return;
     137             :     }
     138             : 
     139           1 :   in = es_fopen (argv[1], "r");
     140           1 :   if (in == NULL)
     141             :     {
     142           0 :       fprintf (stderr, "skipping test: could not open %s: %s",
     143           0 :                argv[1], strerror (errno));
     144           0 :       return;
     145             :     }
     146             : 
     147           1 :   err = es_fseek (in, 0L, SEEK_END);
     148           1 :   if (err)
     149             :     {
     150           0 :       fprintf (stderr, "skipping test: could not seek in %s: %s",
     151             :                argv[1], gpg_strerror (err));
     152           0 :       return;
     153             :     }
     154             : 
     155           1 :   reference_len = es_ftell (in);
     156           1 :   err = es_fseek (in, 0L, SEEK_SET);
     157           1 :   assert (!err || !"rewinding failed");
     158             : 
     159           1 :   reference = malloc (reference_len);
     160           1 :   assert (reference || !"allocating reference buffer failed");
     161             : 
     162          15 :   for (p = reference; p - reference < reference_len; )
     163             :     {
     164             :       size_t bytes_read, left;
     165          13 :       left = reference_len - (p - reference);
     166          13 :       if (left > 4096)
     167          12 :         left = 4096;
     168          13 :       err = es_read (in, p, left, &bytes_read);
     169          13 :       if (err)
     170             :         {
     171           0 :           fprintf (stderr, "error reading %s: %s",
     172             :                    argv[1], gpg_strerror (err));
     173           0 :           exit (1);
     174             :         }
     175             : 
     176          13 :       p += bytes_read;
     177             :     }
     178           1 :   es_fclose (in);
     179             : 
     180           1 :   if (verbose)
     181           0 :     fprintf (stderr, "Executing %s %s...\n", argv[0], argv[1]);
     182             : 
     183           1 :   err = gnupg_exec_tool (argv[0], &argv[1], "", &result, &len);
     184           1 :   if (err)
     185           0 :     fail ("gnupg_exec_tool", err);
     186             : 
     187           1 :   assert (result);
     188             : 
     189             :   /* gnupg_exec_tool returns the correct length... */
     190           1 :   assert (len == reference_len);
     191           1 :   assert (memcmp (result, reference, reference_len) == 0);
     192           1 :   free (reference);
     193           1 :   free (result);
     194             : }
     195             : 
     196             : 
     197             : int
     198           1 : main (int argc, char **argv)
     199             : {
     200             :   int i;
     201             :   char binjunk[256];
     202             : 
     203           1 :   if (argc)
     204           1 :     { argc--; argv++; }
     205           1 :   if (argc && !strcmp (argv[0], "--verbose"))
     206             :     {
     207           0 :       verbose = 1;
     208           0 :       argc--; argv++;
     209             :     }
     210             : 
     211           1 :   test_executing_true ();
     212           1 :   test_executing_false ();
     213           1 :   test_executing_cat ("Talking to myself here...");
     214             : 
     215         256 :   for (i = 0; i < 255 /* one less */; i++)
     216         255 :     binjunk[i] = i + 1; /* avoid 0 */
     217           1 :   binjunk[255] = 0;
     218             : 
     219           1 :   test_executing_cat (binjunk);
     220           1 :   test_catting_cat ();
     221             : 
     222           1 :   return 0;
     223             : }

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