1 /*
2 * Copyright (C) 2021 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15 #include "dhcp_client.h"
16
17 #include <string.h>
18 #include <sys/types.h>
19 #include <sys/socket.h>
20 #include <errno.h>
21 #include <signal.h>
22 #include <unistd.h>
23 #include <string.h>
24
25 #include "securec.h"
26 #include "dhcp_function.h"
27 #include "dhcp_ipv4.h"
28
29 #undef LOG_TAG
30 #define LOG_TAG "WifiDhcpClient"
31
32 /* Default options. */
33 static struct DhcpClientCfg g_clientCfg = {"", "", "", "", "", 0, 0, DHCP_IP_TYPE_NONE, {'\0'}, NULL, false, "", "", 0};
34
GetDhcpClientCfg(void)35 struct DhcpClientCfg *GetDhcpClientCfg(void)
36 {
37 return &g_clientCfg;
38 }
39
StartProcess(void)40 int StartProcess(void)
41 {
42 LOGI("StartProcess() begin.");
43 if (InitSignalHandle() != DHCP_OPT_SUCCESS) {
44 return DHCP_OPT_FAILED;
45 }
46
47 if ((g_clientCfg.getMode == DHCP_IP_TYPE_ALL) || (g_clientCfg.getMode == DHCP_IP_TYPE_V4)) {
48 /* Handle dhcp v4. */
49 StartIpv4();
50 }
51 return DHCP_OPT_SUCCESS;
52 }
53
StopProcess(const char * pidFile)54 int StopProcess(const char *pidFile)
55 {
56 LOGI("StopProcess() begin, pidFile:%{public}s.", pidFile);
57 pid_t pid = GetPID(pidFile);
58 if (pid <= 0) {
59 LOGW("StopProcess() GetPID pidFile:%{public}s, pid == -1!", pidFile);
60 return DHCP_OPT_SUCCESS;
61 }
62
63 LOGI("StopProcess() sending signal SIGTERM to process:%{public}d.", pid);
64 if (kill(pid, SIGTERM) == -1) {
65 if (ESRCH == errno) {
66 LOGW("StopProcess() pidFile:%{public}s,pid:%{public}d is not exist.", pidFile, pid);
67 unlink(pidFile);
68 return DHCP_OPT_SUCCESS;
69 }
70 LOGE("StopProcess() cmd: [kill %{public}d] failed, kill error:%{public}d!", pid, errno);
71 return DHCP_OPT_FAILED;
72 }
73
74 unlink(pidFile);
75 return DHCP_OPT_SUCCESS;
76 }
77
GetProStatus(const char * pidFile)78 int GetProStatus(const char *pidFile)
79 {
80 pid_t pid = GetPID(pidFile);
81 if (pid <= 0) {
82 LOGI("GetProStatus() %{public}s pid:%{public}d, %{public}s is not running.", pidFile, pid, DHCPC_NAME);
83 return 0;
84 }
85 LOGI("GetProStatus() %{public}s pid:%{public}d, %{public}s is running.", pidFile, pid, DHCPC_NAME);
86 return 1;
87 }
88