summaryrefslogtreecommitdiffstats
path: root/src/lib/dhcpsrv/testutils/test_utils.cc
blob: 2608698de0a975f7cb820b1837191aeab44e007d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
// Copyright (C) 2012-2023 Internet Systems Consortium, Inc. ("ISC")
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.

#include <config.h>
#include "test_utils.h"
#include <asiolink/io_address.h>
#include <gtest/gtest.h>
#include <sstream>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>

using namespace std;
using namespace isc::asiolink;

namespace isc {
namespace dhcp {
namespace test {

void
detailCompareLease(const Lease4Ptr& first, const Lease4Ptr& second) {
    // Compare address strings.  Comparison of address objects is not used, as
    // odd things happen when they are different: the EXPECT_EQ macro appears to
    // call the operator uint32_t() function, which causes an exception to be
    // thrown for IPv6 addresses.
    ASSERT_TRUE(first);
    ASSERT_TRUE(second);
    EXPECT_EQ(first->addr_, second->addr_);

    // We need to compare the actual HWAddr objects, not pointers
    EXPECT_TRUE(*first->hwaddr_ == *second->hwaddr_);

    if (first->client_id_ && second->client_id_) {
        EXPECT_TRUE(*first->client_id_ == *second->client_id_);
    } else {
        if (first->client_id_ && !second->client_id_) {

            ADD_FAILURE() << "Client-id present in first lease ("
                          << first->client_id_->getClientId().size()
                          << " bytes), but missing in second.";
        }
        if (!first->client_id_ && second->client_id_) {
            ADD_FAILURE() << "Client-id missing in first lease, but present in second ("
                          << second->client_id_->getClientId().size()
                          << " bytes).";
        }
        // else here would mean that both leases do not have client_id_
        // which makes them equal in that regard. It is ok.
    }
    EXPECT_EQ(first->valid_lft_, second->valid_lft_);
    EXPECT_EQ(first->cltt_, second->cltt_);
    EXPECT_EQ(first->subnet_id_, second->subnet_id_);
    EXPECT_EQ(first->pool_id_, second->pool_id_);
    EXPECT_EQ(first->fqdn_fwd_, second->fqdn_fwd_);
    EXPECT_EQ(first->fqdn_rev_, second->fqdn_rev_);
    EXPECT_EQ(first->hostname_, second->hostname_);
    if (first->getContext()) {
        EXPECT_TRUE(second->getContext());
        if (second->getContext()) {
            EXPECT_EQ(first->getContext()->str(), second->getContext()->str());
        }
    } else {
        EXPECT_FALSE(second->getContext());
    }
}

void
detailCompareLease(const Lease6Ptr& first, const Lease6Ptr& second) {
    ASSERT_TRUE(first);
    ASSERT_TRUE(second);
    EXPECT_EQ(first->type_, second->type_);

    // Compare address strings.  Comparison of address objects is not used, as
    // odd things happen when they are different: the EXPECT_EQ macro appears to
    // call the operator uint32_t() function, which causes an exception to be
    // thrown for IPv6 addresses.
    EXPECT_EQ(first->addr_, second->addr_);
    EXPECT_EQ(first->prefixlen_, second->prefixlen_);
    EXPECT_EQ(first->iaid_, second->iaid_);
    ASSERT_TRUE(first->duid_);
    ASSERT_TRUE(second->duid_);
    EXPECT_TRUE(*first->duid_ == *second->duid_);
    EXPECT_EQ(first->preferred_lft_, second->preferred_lft_);
    EXPECT_EQ(first->valid_lft_, second->valid_lft_);
    EXPECT_EQ(first->cltt_, second->cltt_);
    EXPECT_EQ(first->subnet_id_, second->subnet_id_);
    EXPECT_EQ(first->pool_id_, second->pool_id_);
    EXPECT_EQ(first->fqdn_fwd_, second->fqdn_fwd_);
    EXPECT_EQ(first->fqdn_rev_, second->fqdn_rev_);
    EXPECT_EQ(first->hostname_, second->hostname_);
    if (first->getContext()) {
        EXPECT_TRUE(second->getContext());
        if (second->getContext()) {
            EXPECT_EQ(first->getContext()->str(), second->getContext()->str());
        }
    } else {
        EXPECT_FALSE(second->getContext());
    }
}

int findLastSocketFd() {
    int max_fd_number = getdtablesize();
    int last_socket = -1;
    struct stat stats;

    // Iterate over the open fds
    for (int fd = 0; fd <= max_fd_number; fd++ ) {
        errno = 0;
        fstat(fd, &stats);

        if (errno == EBADF ) {
            // Skip any that aren't open
            continue;
        }

        // it's a socket, remember it
        if (S_ISSOCK(stats.st_mode)) {
            last_socket = fd;
        }
    }

    return (last_socket);
}

FillFdHoles::FillFdHoles(int limit) : fds_() {
    if (limit <= 0) {
        return;
    }
    for (;;) {
        int fd = open("/dev/null", O_RDWR, 0);
        if (fd == -1) {
            return;
        }
        if (fd < limit) {
            fds_.push_front(fd);
        } else {
            static_cast<void>(close(fd));
            return;
        }
    }
}

FillFdHoles::~FillFdHoles() {
    while (!fds_.empty()) {
        static_cast<void>(close(fds_.back()));
        fds_.pop_back();
    }
}

} // namespace test
} // namespace dhcp
} // namespace isc