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parse-connection-spec-selftests.c revision 1.1.1.4
      1 /* Self tests for parsing connection specs for GDB, the GNU debugger.
      2 
      3    Copyright (C) 2018-2024 Free Software Foundation, Inc.
      4 
      5    This file is part of GDB.
      6 
      7    This program is free software; you can redistribute it and/or modify
      8    it under the terms of the GNU General Public License as published by
      9    the Free Software Foundation; either version 3 of the License, or
     10    (at your option) any later version.
     11 
     12    This program is distributed in the hope that it will be useful,
     13    but WITHOUT ANY WARRANTY; without even the implied warranty of
     14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     15    GNU General Public License for more details.
     16 
     17    You should have received a copy of the GNU General Public License
     18    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
     19 
     20 #include "gdbsupport/selftest.h"
     21 #include "gdbsupport/netstuff.h"
     22 #include "diagnostics.h"
     23 #ifdef USE_WIN32API
     24 #include <ws2tcpip.h>
     25 #else
     26 #include <netinet/in.h>
     27 #include <arpa/inet.h>
     28 #include <netdb.h>
     29 #include <sys/socket.h>
     30 #include <netinet/tcp.h>
     31 #endif
     32 
     33 namespace selftests {
     34 namespace parse_connection_spec_tests {
     35 
     36 /* Auxiliary struct that holds info about a specific test for a
     37    connection spec.  */
     38 
     39 struct parse_conn_test
     40 {
     41   /* The connection spec.  */
     42   const char *connspec;
     43 
     44   /* Expected result from 'parse_connection_spec'.  */
     45   parsed_connection_spec expected_result;
     46 
     47   /* True if this test should fail, false otherwise.  If true, only
     48      the CONNSPEC field should be considered as valid.  */
     49   bool should_fail;
     50 
     51   /* The expected AI_FAMILY to be found on the 'struct addrinfo'
     52      HINT.  */
     53   int exp_ai_family;
     54 
     55   /* The expected AI_SOCKTYPE to be found on the 'struct addrinfo'
     56      HINT.  */
     57   int exp_ai_socktype;
     58 
     59   /* The expected AI_PROTOCOL to be found on the 'struct addrinfo'
     60      HINT.  */
     61   int exp_ai_protocol;
     62 };
     63 
     64 /* Some defines to help us fill a 'struct parse_conn_test'.  */
     65 
     66 /* Initialize a full entry.  */
     67 #define INIT_ENTRY(ADDR, EXP_HOST, EXP_PORT, SHOULD_FAIL, EXP_AI_FAMILY, \
     68 		   EXP_AI_SOCKTYPE, EXP_AI_PROTOCOL)			\
     69   { ADDR, { EXP_HOST, EXP_PORT }, SHOULD_FAIL, EXP_AI_FAMILY, \
     70     EXP_AI_SOCKTYPE, EXP_AI_PROTOCOL }
     71 
     72 /* Initialize an unprefixed entry.  In this case, we don't expect
     73    anything on the 'struct addrinfo' HINT.  */
     74 #define INIT_UNPREFIXED_ENTRY(ADDR, EXP_HOST, EXP_PORT) \
     75   INIT_ENTRY (ADDR, EXP_HOST, EXP_PORT, false, 0, 0, 0)
     76 
     77 /* Initialized an unprefixed IPv6 entry.  In this case, we don't
     78    expect anything on the 'struct addrinfo' HINT.  */
     79 #define INIT_UNPREFIXED_IPV6_ENTRY(ADDR, EXP_HOST, EXP_PORT) \
     80   INIT_ENTRY (ADDR, EXP_HOST, EXP_PORT, false, AF_INET6, 0, 0)
     81 
     82 /* Initialize a prefixed entry.  */
     83 #define INIT_PREFIXED_ENTRY(ADDR, EXP_HOST, EXP_PORT, EXP_AI_FAMILY, \
     84 			    EXP_AI_SOCKTYPE, EXP_AI_PROTOCOL) \
     85   INIT_ENTRY (ADDR, EXP_HOST, EXP_PORT, false, EXP_AI_FAMILY, \
     86 	      EXP_AI_SOCKTYPE, EXP_AI_PROTOCOL)
     87 
     88 /* Initialize an entry prefixed with "tcp4:".  */
     89 #define INIT_PREFIXED_IPV4_TCP(ADDR, EXP_HOST, EXP_PORT) \
     90   INIT_PREFIXED_ENTRY (ADDR, EXP_HOST, EXP_PORT, AF_INET, SOCK_STREAM, \
     91 		       IPPROTO_TCP)
     92 
     93 /* Initialize an entry prefixed with "tcp6:".  */
     94 #define INIT_PREFIXED_IPV6_TCP(ADDR, EXP_HOST, EXP_PORT) \
     95   INIT_PREFIXED_ENTRY (ADDR, EXP_HOST, EXP_PORT, AF_INET6, SOCK_STREAM, \
     96 		       IPPROTO_TCP)
     97 
     98 /* Initialize an entry prefixed with "udp4:".  */
     99 #define INIT_PREFIXED_IPV4_UDP(ADDR, EXP_HOST, EXP_PORT) \
    100   INIT_PREFIXED_ENTRY (ADDR, EXP_HOST, EXP_PORT, AF_INET, SOCK_DGRAM, \
    101 		       IPPROTO_UDP)
    102 
    103 /* Initialize an entry prefixed with "udp6:".  */
    104 #define INIT_PREFIXED_IPV6_UDP(ADDR, EXP_HOST, EXP_PORT) \
    105   INIT_PREFIXED_ENTRY (ADDR, EXP_HOST, EXP_PORT, AF_INET6, SOCK_DGRAM, \
    106 		       IPPROTO_UDP)
    107 
    108 /* Initialize a bogus entry, i.e., a connection spec that should
    109    fail.  */
    110 #define INIT_BOGUS_ENTRY(ADDR) \
    111   INIT_ENTRY (ADDR, "", "", true, 0, 0, 0)
    112 
    113 /* The variable which holds all of our tests.  */
    114 
    115 static const parse_conn_test conn_test[] =
    116   {
    117     /* Unprefixed addresses.  */
    118 
    119     /* IPv4, host and port present.  */
    120     INIT_UNPREFIXED_ENTRY ("127.0.0.1:1234", "127.0.0.1", "1234"),
    121     /* IPv4, only host.  */
    122     INIT_UNPREFIXED_ENTRY ("127.0.0.1", "127.0.0.1", ""),
    123     /* IPv4, missing port.  */
    124     INIT_UNPREFIXED_ENTRY ("127.0.0.1:", "127.0.0.1", ""),
    125 
    126     /* IPv6, host and port present, no brackets.  */
    127     INIT_UNPREFIXED_ENTRY ("::1:1234", "::1", "1234"),
    128     /* IPv6, missing port, no brackets.  */
    129     INIT_UNPREFIXED_ENTRY ("::1:", "::1", ""),
    130     /* IPv6, host and port present, with brackets.  */
    131     INIT_UNPREFIXED_IPV6_ENTRY ("[::1]:1234", "::1", "1234"),
    132     /* IPv6, only host, with brackets.  */
    133     INIT_UNPREFIXED_IPV6_ENTRY ("[::1]", "::1", ""),
    134     /* IPv6, missing port, with brackets.  */
    135     INIT_UNPREFIXED_IPV6_ENTRY ("[::1]:", "::1", ""),
    136 
    137     /* Unspecified, only port.  */
    138     INIT_UNPREFIXED_ENTRY (":1234", "localhost", "1234"),
    139 
    140     /* Prefixed addresses.  */
    141 
    142     /* Prefixed "tcp4:" IPv4, host and port presents.  */
    143     INIT_PREFIXED_IPV4_TCP ("tcp4:127.0.0.1:1234", "127.0.0.1", "1234"),
    144     /* Prefixed "tcp4:" IPv4, only port.  */
    145     INIT_PREFIXED_IPV4_TCP ("tcp4::1234", "localhost", "1234"),
    146     /* Prefixed "tcp4:" IPv4, only host.  */
    147     INIT_PREFIXED_IPV4_TCP ("tcp4:127.0.0.1", "127.0.0.1", ""),
    148     /* Prefixed "tcp4:" IPv4, missing port.  */
    149     INIT_PREFIXED_IPV4_TCP ("tcp4:127.0.0.1:", "127.0.0.1", ""),
    150 
    151     /* Prefixed "udp4:" IPv4, host and port present.  */
    152     INIT_PREFIXED_IPV4_UDP ("udp4:127.0.0.1:1234", "127.0.0.1", "1234"),
    153     /* Prefixed "udp4:" IPv4, only port.  */
    154     INIT_PREFIXED_IPV4_UDP ("udp4::1234", "localhost", "1234"),
    155     /* Prefixed "udp4:" IPv4, only host.  */
    156     INIT_PREFIXED_IPV4_UDP ("udp4:127.0.0.1", "127.0.0.1", ""),
    157     /* Prefixed "udp4:" IPv4, missing port.  */
    158     INIT_PREFIXED_IPV4_UDP ("udp4:127.0.0.1:", "127.0.0.1", ""),
    159 
    160 
    161     /* Prefixed "tcp6:" IPv6, host and port present.  */
    162     INIT_PREFIXED_IPV6_TCP ("tcp6:::1:1234", "::1", "1234"),
    163     /* Prefixed "tcp6:" IPv6, only port.  */
    164     INIT_PREFIXED_IPV6_TCP ("tcp6::1234", "localhost", "1234"),
    165     /* Prefixed "tcp6:" IPv6, only host.  */
    166     //INIT_PREFIXED_IPV6_TCP ("tcp6:::1", "::1", ""),
    167     /* Prefixed "tcp6:" IPv6, missing port.  */
    168     INIT_PREFIXED_IPV6_TCP ("tcp6:::1:", "::1", ""),
    169 
    170     /* Prefixed "udp6:" IPv6, host and port present.  */
    171     INIT_PREFIXED_IPV6_UDP ("udp6:::1:1234", "::1", "1234"),
    172     /* Prefixed "udp6:" IPv6, only port.  */
    173     INIT_PREFIXED_IPV6_UDP ("udp6::1234", "localhost", "1234"),
    174     /* Prefixed "udp6:" IPv6, only host.  */
    175     //INIT_PREFIXED_IPV6_UDP ("udp6:::1", "::1", ""),
    176     /* Prefixed "udp6:" IPv6, missing port.  */
    177     INIT_PREFIXED_IPV6_UDP ("udp6:::1:", "::1", ""),
    178 
    179     /* Prefixed "tcp6:" IPv6 with brackets, host and port present.  */
    180     INIT_PREFIXED_IPV6_TCP ("tcp6:[::1]:1234", "::1", "1234"),
    181     /* Prefixed "tcp6:" IPv6 with brackets, only host.  */
    182     INIT_PREFIXED_IPV6_TCP ("tcp6:[::1]", "::1", ""),
    183     /* Prefixed "tcp6:" IPv6 with brackets, missing port.  */
    184     INIT_PREFIXED_IPV6_TCP ("tcp6:[::1]:", "::1", ""),
    185 
    186     /* Prefixed "udp6:" IPv6 with brackets, host and port present.  */
    187     INIT_PREFIXED_IPV6_UDP ("udp6:[::1]:1234", "::1", "1234"),
    188     /* Prefixed "udp6:" IPv6 with brackets, only host.  */
    189     INIT_PREFIXED_IPV6_UDP ("udp6:[::1]", "::1", ""),
    190     /* Prefixed "udp6:" IPv6 with brackets, missing port.  */
    191     INIT_PREFIXED_IPV6_UDP ("udp6:[::1]:", "::1", ""),
    192 
    193 
    194     /* Bogus addresses.  */
    195     INIT_BOGUS_ENTRY ("tcp6:[::1]123:44"),
    196     INIT_BOGUS_ENTRY ("[::1"),
    197     INIT_BOGUS_ENTRY ("tcp6:::1]:"),
    198   };
    199 
    200 /* Test a connection spec C.  */
    201 
    202 static void
    203 test_conn (const parse_conn_test &c)
    204 {
    205   struct addrinfo hint;
    206   parsed_connection_spec ret;
    207 
    208   memset (&hint, 0, sizeof (hint));
    209 
    210   try
    211     {
    212       ret = parse_connection_spec (c.connspec, &hint);
    213     }
    214   catch (const gdb_exception_error &ex)
    215     {
    216       /* If we caught an error, we should check if this connection
    217 	 spec was supposed to fail.  */
    218       SELF_CHECK (c.should_fail);
    219       return;
    220     }
    221 
    222   SELF_CHECK (!c.should_fail);
    223   SELF_CHECK (ret.host_str == c.expected_result.host_str);
    224   SELF_CHECK (ret.port_str == c.expected_result.port_str);
    225   SELF_CHECK (hint.ai_family == c.exp_ai_family);
    226   SELF_CHECK (hint.ai_socktype == c.exp_ai_socktype);
    227   SELF_CHECK (hint.ai_protocol == c.exp_ai_protocol);
    228 }
    229 
    230 /* Run the tests associated with parsing connection specs.  */
    231 
    232 static void
    233 run_tests ()
    234 {
    235   for (const parse_conn_test &c : conn_test)
    236     test_conn (c);
    237 }
    238 } /* namespace parse_connection_spec_tests */
    239 } /* namespace selftests */
    240 
    241 void _initialize_parse_connection_spec_selftests ();
    242 void
    243 _initialize_parse_connection_spec_selftests ()
    244 {
    245   selftests::register_test ("parse_connection_spec",
    246 			    selftests::parse_connection_spec_tests::run_tests);
    247 }
    248