src/tests/testIcmp.cc

   1 /*
   2  * Copyright (C) 1996-2018 The Squid Software Foundation and contributors
   3  *
   4  * Squid software is distributed under GPLv2+ license and includes
   5  * contributions from numerous individuals and organizations.
   6  * Please see the COPYING and CONTRIBUTORS files for details.
   7  */
   8
   9 #define SQUID_HELPER 1
  10
  11 #include "squid.h"
  12 #include "tests/testIcmp.h"
  13 #include "unitTestMain.h"
  14
  15 #include <cppunit/TestAssert.h>
  16
  17 CPPUNIT_TEST_SUITE_REGISTRATION( testIcmp );
  18
  19 void
  20 testIcmp::testChecksum()
  21 {
  22 #if USE_ICMP
  23     stubIcmp icmp;
  24     uint16_t buf[10], tmpval;
  25     for (tmpval=0; tmpval < 10; ++tmpval)
  26         buf[tmpval]=htons(1+tmpval);
  27
  28     // NULL data
  29     CPPUNIT_ASSERT_EQUAL((int)htons(0xffff), icmp.testChecksum(NULL,0));
  30
  31     // NULL data with length!!
  32     CPPUNIT_ASSERT_EQUAL((int)htons(0xffff), icmp.testChecksum(NULL,1));
  33
  34     // data with 0 length
  35     CPPUNIT_ASSERT_EQUAL((int)htons(0xffff), icmp.testChecksum(buf,0));
  36
  37     // data with invalid length (low)
  38     CPPUNIT_ASSERT_EQUAL((int)htons(0xffff), icmp.testChecksum(buf,1));
  39
  40     CPPUNIT_ASSERT_EQUAL((int)htons(0xfffe), icmp.testChecksum(buf,2)); // 1
  41     CPPUNIT_ASSERT_EQUAL((int)htons(0xfffe), icmp.testChecksum(buf,3));
  42
  43     CPPUNIT_ASSERT_EQUAL((int)htons(0xfffc), icmp.testChecksum(buf,4)); // 1+2
  44     CPPUNIT_ASSERT_EQUAL((int)htons(0xfffc), icmp.testChecksum(buf,5));
  45
  46     CPPUNIT_ASSERT_EQUAL((int)htons(0xfff9), icmp.testChecksum(buf,6)); // 1+2+3
  47     CPPUNIT_ASSERT_EQUAL((int)htons(0xfff9), icmp.testChecksum(buf,7));
  48
  49     CPPUNIT_ASSERT_EQUAL((int)htons(0xfff5), icmp.testChecksum(buf,8)); // 1+2+3+4
  50     CPPUNIT_ASSERT_EQUAL((int)htons(0xfff5), icmp.testChecksum(buf,9));
  51
  52     CPPUNIT_ASSERT_EQUAL((int)htons(0xfff0), icmp.testChecksum(buf,10)); // 1+2...+5
  53     CPPUNIT_ASSERT_EQUAL((int)htons(0xfff0), icmp.testChecksum(buf,11));
  54
  55     CPPUNIT_ASSERT_EQUAL((int)htons(0xffea), icmp.testChecksum(buf,12)); // 1+2...+6
  56     CPPUNIT_ASSERT_EQUAL((int)htons(0xffea), icmp.testChecksum(buf,13));
  57
  58     CPPUNIT_ASSERT_EQUAL((int)htons(0xffe3), icmp.testChecksum(buf,14)); // 1+2...+7
  59     CPPUNIT_ASSERT_EQUAL((int)htons(0xffe3), icmp.testChecksum(buf,15));
  60
  61     CPPUNIT_ASSERT_EQUAL((int)htons(0xffdb), icmp.testChecksum(buf,16)); // 1+2...+8
  62     CPPUNIT_ASSERT_EQUAL((int)htons(0xffdb), icmp.testChecksum(buf,17));
  63
  64     CPPUNIT_ASSERT_EQUAL((int)htons(0xffd2), icmp.testChecksum(buf,18)); // 1+2...+9
  65     CPPUNIT_ASSERT_EQUAL((int)htons(0xffd2), icmp.testChecksum(buf,19));
  66
  67     // data with accurate length
  68     CPPUNIT_ASSERT_EQUAL((int)htons(0xffc8), icmp.testChecksum(buf,20)); // 1+2...+10
  69
  70     // data with invalid length (overrun) ==> Garbage checksum...
  71 #endif
  72 }
  73
  74 void
  75 testIcmp::testHops()
  76 {
  77 #if USE_ICMP
  78     stubIcmp icmp;
  79
  80     /* test invalid -(under values) */
  81     // negative     : n > 33
  82     CPPUNIT_ASSERT_EQUAL(34, icmp.testHops(-1));
  83     // zero
  84     CPPUNIT_ASSERT_EQUAL(33, icmp.testHops(0));
  85
  86     /* test each valid case boundary */
  87     // n(1...32)    : 32 >= n >= 1
  88     CPPUNIT_ASSERT_EQUAL(32, icmp.testHops(1));
  89     CPPUNIT_ASSERT_EQUAL(1, icmp.testHops(32));
  90
  91     // n(33...62)   : 30 >= n >= 1
  92     CPPUNIT_ASSERT_EQUAL(30, icmp.testHops(33));
  93     CPPUNIT_ASSERT_EQUAL(1, icmp.testHops(62));
  94
  95     // n(63...64)  : 2 >= n >= 1
  96     CPPUNIT_ASSERT_EQUAL(2, icmp.testHops(63));
  97     CPPUNIT_ASSERT_EQUAL(1, icmp.testHops(64));
  98
  99     // n(65...128)  : 64 >= n >= 1
 100     CPPUNIT_ASSERT_EQUAL(64, icmp.testHops(65));
 101     CPPUNIT_ASSERT_EQUAL(1, icmp.testHops(128));
 102
 103     // n(129...192) : 64 >= n >= 1
 104     CPPUNIT_ASSERT_EQUAL(64, icmp.testHops(129));
 105     CPPUNIT_ASSERT_EQUAL(1, icmp.testHops(192));
 106
 107     // n(193...)    : n < 63
 108     CPPUNIT_ASSERT_EQUAL(63, icmp.testHops(193));
 109     CPPUNIT_ASSERT_EQUAL(1, icmp.testHops(255));
 110
 111     /* test invalid (over values) */
 112     // 256 - produces zero
 113     CPPUNIT_ASSERT_EQUAL(0, icmp.testHops(256));
 114     // 257 - produces negative hops
 115     CPPUNIT_ASSERT_EQUAL(-1, icmp.testHops(257));
 116 #endif
 117 }
 118