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Base system with REST service to issue digital coins, run by the payment service provider
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test_slug.c (3949B)

      1 /*
      2   This file is part of TALER
      3   (C) 2026 Taler Systems SA
      4 
      5   TALER is free software; you can redistribute it and/or modify it under the
      6   terms of the GNU General Public License as published by the Free Software
      7   Foundation; either version 3, or (at your option) any later version.
      8 
      9   TALER is distributed in the hope that it will be useful, but WITHOUT ANY
     10   WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
     11   A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
     12 
     13   You should have received a copy of the GNU General Public License along with
     14   TALER; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
     15 */
     16 /**
     17  * @file util/test_slug.c
     18  * @brief Tests for slug and session ID validation
     19  * @author Christian Grothoff
     20  */
     21 #include "taler/taler_util.h"
     22 
     23 
     24 static unsigned int
     25 check_slug (void)
     26 {
     27   struct
     28   {
     29     const char *slug;
     30     bool expected;
     31   } tests[] = {
     32     /* Valid slugs */
     33     {"a", true},
     34     {"instance-1", true},
     35     {"2026.216-EV3XB88000000", true},
     36     {"A.b_c:d~e", true},
     37     {"0123456789", true},
     38     {"...", true},
     39 
     40     /* Invalid slugs */
     41     {"", false},                                 /* empty */
     42     {".", false},                                /* special path component */
     43     {"..", false},                               /* special path component */
     44     {"a/b", false},                              /* not a single component */
     45     {"a%2Fb", false},                            /* percent-encoding */
     46     {"a b", false},
     47     {"a+b", false},
     48     {"a=b", false},                              /* '=' is only for session IDs */
     49     {"a?b", false},
     50     {"a#b", false},
     51     {"a&b", false},
     52     {"a@b", false},
     53     /* Bytes >= 0x80 are rejected whatever the locale says about them:
     54        "\u00e4" in UTF-8, and the same two bytes are each a letter in
     55        ISO-8859-1. */
     56     {"a\xc3\xa4b", false},
     57     {"\xe4", false},
     58   };
     59   unsigned int failed = 0;
     60 
     61   for (unsigned int i = 0; i<sizeof (tests) / sizeof (tests[0]); i++)
     62   {
     63     bool result = TALER_is_slug (tests[i].slug);
     64 
     65     if (result == tests[i].expected)
     66       continue;
     67     failed++;
     68     fprintf (stderr,
     69              "FAIL: slug \"%s\" -> %s (expected %s)\n",
     70              tests[i].slug,
     71              result ? "VALID" : "INVALID",
     72              tests[i].expected ? "VALID" : "INVALID");
     73   }
     74   return failed;
     75 }
     76 
     77 
     78 static unsigned int
     79 check_session_id (void)
     80 {
     81   struct
     82   {
     83     const char *session_id;
     84     bool expected;
     85   } tests[] = {
     86     /* Valid session IDs */
     87     {"", true},                                  /* not session-bound */
     88     {"session-1", true},
     89     {"4322-6hvIP7UnmNDVjp5Intuf9jFK7MzW0ycEyxf5Mszl3xs=", true},  /* Paivana ID */
     90     {"a", true},
     91     {"A.b_c:d~e=", true},
     92     {"0123456789", true},
     93     {"...", true},
     94 
     95     /* Invalid session IDs */
     96     {".", false},                                /* special path component */
     97     {"..", false},                               /* special path component */
     98     {"a/b", false},                              /* not a single component */
     99     {"a%2Fb", false},                            /* percent-encoding */
    100     {"a b", false},
    101     {"a+b", false},
    102     {"a?b", false},
    103     {"a#b", false},
    104     {"a&b", false},
    105     {"a@b", false},
    106     {"a\xc3\xa4b", false},
    107     {"\xe4", false},
    108   };
    109   unsigned int failed = 0;
    110 
    111   for (unsigned int i = 0; i<sizeof (tests) / sizeof (tests[0]); i++)
    112   {
    113     bool result = TALER_is_session_id (tests[i].session_id);
    114 
    115     if (result == tests[i].expected)
    116       continue;
    117     failed++;
    118     fprintf (stderr,
    119              "FAIL: session ID \"%s\" -> %s (expected %s)\n",
    120              tests[i].session_id,
    121              result ? "VALID" : "INVALID",
    122              tests[i].expected ? "VALID" : "INVALID");
    123   }
    124   return failed;
    125 }
    126 
    127 
    128 int
    129 main (int argc,
    130       const char *const argv[])
    131 {
    132   (void) argc;
    133   (void) argv;
    134   if (0 != check_slug ())
    135     return 1;
    136   if (0 != check_session_id ())
    137     return 1;
    138   return 0;
    139 }