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
156
157
158
159
160
161
162
163
164
165
166
|
/*
* Copyright (C) 2018 Red Hat, Inc.
*
* Licensed under the GNU Lesser General Public License Version 2.1
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <libdnf/plugin/plugin.h>
#include <libdnf/libdnf.h>
#include <libdnf/log.hpp>
#include <rhsm/rhsm.h>
#include <string>
#include <string.h>
#include <sys/mman.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
// Information about this plugin
// Pointer to this structure is returned by pluginGetInfo().
static const PluginInfo info = {
.name = "rhsm",
.version = "1.0.0"
};
// plugin context private data
// Pointer to instance of this structure is returned by pluginInitHandle() as handle.
struct _PluginHandle
{
PluginMode mode;
DnfContext * context; // store plugin context specific init data
};
const PluginInfo * pluginGetInfo(void)
{
return &info;
}
PluginHandle * pluginInitHandle(int version, PluginMode mode, DnfPluginInitData * initData)
{
auto logger(libdnf::Log::getLogger());
if (version != 1) {
auto msg = std::string(info.name) + ": " + __func__ + ": Error: Unsupported API version";
logger->error(msg);
return nullptr;
}
if (mode != PLUGIN_MODE_CONTEXT) {
auto msg = std::string(info.name) + ": " + __func__ + ": Warning: Unsupported mode";
logger->warning(msg);
return nullptr;
}
auto handle = new PluginHandle;
handle->mode = mode;
handle->context = pluginGetContext(initData);
return handle;
}
void pluginFreeHandle(PluginHandle * handle)
{
if (handle)
delete handle;
}
/**
* dnf_context_setup_enrollments:
* @context: a #DnfContext instance.
*
* Resyncs the enrollment with the vendor system. This may change the contents
* of files in repos.d according to subscription levels.
*
* Returns: %true for success, %false otherwise
**/
static bool setupEnrollments(PluginHandle *handle)
{
auto logger(libdnf::Log::getLogger());
if (dnf_context_get_cache_only(handle->context))
return true;
/* Let's assume that alternative installation roots don't
* require entitlement. We only want to do system things if
* we're actually affecting the system. A more accurate test
* here would be checking that we're using /etc/yum.repos.d or
* so, but that can come later.
*/
auto installRoot = dnf_context_get_install_root(handle->context);
if (installRoot && strcmp(installRoot, "/") != 0)
return true;
/* Also, all of the subman stuff only works as root, if we're not
* root, assume we're running in the test suite, or we're part of
* e.g. rpm-ostree which is trying to run totally as non-root.
*/
if (getuid() != 0)
return true;
auto repoDir = dnf_context_get_repo_dir(handle->context);
g_autofree gchar *repofname = g_build_filename(repoDir, "redhat.repo", NULL);
g_autoptr(RHSMContext) rhsm_ctx = rhsm_context_new();
g_autoptr(GKeyFile) repofile = rhsm_utils_yum_repo_from_context(rhsm_ctx);
/* We don't want rewrite "redhat.repo" file with the same content.
* So we do a comparison of contents. Only If file is missing or
* contents differs new content is written to the file.
*/
bool sameContent = false;
int fd;
if ((fd = open(repofname, O_RDONLY)) != -1) {
gsize length;
g_autofree gchar *data = g_key_file_to_data(repofile, &length, NULL);
auto fileLen = lseek(fd, 0, SEEK_END);
if (fileLen == static_cast<long>(length)) {
if (fileLen > 0) {
auto addr = mmap(NULL, fileLen, PROT_READ, MAP_PRIVATE, fd, 0);
if (addr != reinterpret_cast<void *>(-1)) {
sameContent = memcmp(addr, data, fileLen) == 0;
munmap(addr, fileLen);
}
} else {
sameContent = true;
}
}
close(fd);
}
if (!sameContent) {
GError * error = nullptr;
if (!g_key_file_save_to_file(repofile, repofname, &error)) {
logger->error(std::string(info.name) + ": " + __func__ + ": Error: Can't save repo file: " + error->message);
g_error_free(error);
return false;
}
}
return true;
}
int pluginHook(PluginHandle * handle, PluginHookId id, DnfPluginHookData * hookData, DnfPluginError * error)
{
if (!handle)
return 1;
switch (id) {
case PLUGIN_HOOK_ID_CONTEXT_PRE_REPOS_RELOAD:
return setupEnrollments(handle);
default:
break;
}
return 1;
}
|
