2 * Copyright (c) 2013-2015 Samsung Electronics Co., Ltd All Rights Reserved
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
18 * @file tests_common.cpp
19 * @author Lukasz Kostyra (l.kostyra@partner.samsung.com)
21 * @brief Common functions and macros used in security-tests package.
24 #include "tests_common.h"
28 #include <sys/types.h>
35 int DB::Transaction::db_result = PC_OPERATION_SUCCESS;
37 const char *WGT_APP_ID = "QwCqJ0ttyS";
39 bool smack_check(void)
41 #ifndef WRT_SMACK_ENABLED
44 static int smack_present = -1;
45 if (-1 == smack_present)
46 smack_present = smack_smackfs_path() == nullptr ? 0 : 1;
47 return smack_present == 1;
52 * Dropping root privileges
53 * returns 0 on success, 1 on error
55 int drop_root_privileges(uid_t appUid, gid_t appGid)
58 /* process is running as root, drop privileges */
59 if (setgid(appGid) != 0)
61 if (setuid(appUid) != 0)
71 void setLabelForSelf(const int line, const char *label)
73 int ret = smack_set_label_for_self(label);
74 RUNNER_ASSERT_MSG(ret == 0, "Error in smack_set_label_for_self(): " << ret << ", line: " << line);
78 * Add a new group to the current process groups.
80 void add_process_group(const char* group_name)
82 // get group ID by group name
83 group *gr = getgrnam(group_name);
84 RUNNER_ASSERT_ERRNO_MSG(gr != nullptr, "getgrnam failed on '" << group_name << "' group");
85 const gid_t new_group_id = gr->gr_gid;
87 // get number of groups that the current process belongs to
88 int ngroups = getgroups(0, nullptr);
90 //allocate groups table + space for new group entry
91 std::vector<gid_t> groups(ngroups + 1);
92 getgroups(ngroups, groups.data());
94 // check if the process already belongs to the group
95 if (std::find(groups.begin(), groups.end(), new_group_id) != groups.end()) return;
97 // add new group & apply change
98 groups[ngroups] = new_group_id;
99 int ret = setgroups(groups.size(), groups.data());
100 RUNNER_ASSERT_ERRNO_MSG(ret == 0, "setgroups() failed");
104 * Remove specific group from the current process groups.
106 void remove_process_group(const char* group_name)
108 // get group ID by group name
109 group *gr = getgrnam(group_name);
110 RUNNER_ASSERT_ERRNO_MSG(gr != nullptr, "getgrnam failed on '" << group_name << "' group");
111 const gid_t new_group_id = gr->gr_gid;
113 int ngroups = getgroups(0, nullptr);
114 std::vector<gid_t> groups(ngroups);
115 getgroups(ngroups, groups.data());
117 // remove group from the list
118 groups.erase(std::remove(groups.begin(), groups.end(), new_group_id), groups.end());
120 if (groups.size() != (size_t)ngroups) {
122 int ret = setgroups(groups.size(), groups.data());
123 RUNNER_ASSERT_ERRNO_MSG(ret == 0, "setgroups() failed");
127 std::string formatCstr(const char *cstr)
130 return std::string("nullptr");
131 return std::string("\"") + cstr + "\"";
134 int files_compare(int fd1, int fd2)
136 //for getting files sizes
137 struct stat fs1, fs2;
139 //handlers for mmap()
140 void *h1 = MAP_FAILED;
141 void *h2 = MAP_FAILED;
143 //getting files information
144 RUNNER_ASSERT_ERRNO_MSG(fstat(fd1, &fs1) == 0, "fstat failed");
145 RUNNER_ASSERT_ERRNO_MSG(fstat(fd2, &fs2) == 0, "fstat failed");
147 if (fs1.st_size < fs2.st_size) {
151 if (fs1.st_size > fs2.st_size) {
155 //since Linux 2.6.12, mmap returns EINVAL if length is 0
156 //if both lengths are 0, files are actually the same
157 if (0 == fs1.st_size && 0 == fs2.st_size) {
161 //mapping files to process memory
162 RUNNER_ASSERT_ERRNO_MSG((h1 = mmap(0, fs1.st_size, PROT_READ, MAP_SHARED, fd1, 0 )) != MAP_FAILED,
163 "mmap failed for fd=" << fd1);
165 if ((h2 = mmap(0, fs2.st_size, PROT_READ, MAP_SHARED, fd2, 0 )) == MAP_FAILED) {
166 munmap(h1, fs1.st_size);
167 RUNNER_ASSERT_MSG(h2 != MAP_FAILED, "mmap failed for fd=" << fd2
168 << ". " << strerror(errno));
171 int result = memcmp(h1, h2, fs1.st_size);
172 munmap(h1, fs1.st_size);
173 munmap(h2, fs2.st_size);
178 void mkdirSafe(const std::string &path, mode_t mode)
180 RUNNER_ASSERT_ERRNO_MSG(0 == mkdir(path.c_str(), mode) || errno == EEXIST,
181 "mkdir for <" << path << "> with mode <" << mode << "> failed");
184 void mktreeSafe(const std::string &path, mode_t mode)
186 // Create subsequent parent directories
187 // Assume that path is absolute - i.e. starts with '/'
188 for (size_t pos = 0; (pos = path.find("/", pos + 1)) != std::string::npos; )
189 mkdirSafe(path.substr(0, pos).c_str(), mode);
191 mkdirSafe(path, mode);
194 void creatSafe(const std::string &path, mode_t mode)
196 RUNNER_ASSERT_ERRNO_MSG(-1 != creat(path.c_str(), mode),
197 "creat for <" << path << "> with mode <" << mode << "> failed");
200 void symlinkSafe(const std::string &targetPath, const std::string &linkPath)
202 RUNNER_ASSERT_ERRNO_MSG(0 == symlink(targetPath.c_str(), linkPath.c_str()),
203 "symlink for <" << linkPath << "> to <" << targetPath << "> failed");
206 void removeDir(const std::string &path)
208 DIR *d = opendir(path.c_str());
211 RUNNER_ASSERT_ERRNO_MSG(errno == ENOENT, "opendir of <" << path << "> failed");
215 struct dirent *dirEntry;
216 while (nullptr != (dirEntry = readdir(d))) {
217 std::string entryName(dirEntry->d_name);
218 if (entryName == "." || entryName == "..")
221 std::string entryPath(path + "/" + entryName);
224 RUNNER_ASSERT_ERRNO_MSG(0 == lstat(entryPath.c_str(), &st),
225 "stat for <" << entryPath << "> failed");
226 if (S_ISDIR(st.st_mode))
227 removeDir(entryPath);
229 RUNNER_ASSERT_ERRNO_MSG(0 == unlink(entryPath.c_str()),
230 "unlink for <" << entryPath << "> failed");
235 RUNNER_ASSERT_ERRNO_MSG(0 == rmdir(path.c_str()), "rmdir for <" << path << "> failed");