1 /*
2 * Copyright (c) 2024 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
16 #include <signal.h>
17 #include <stdbool.h>
18 #include <stdlib.h>
19
20 #include "appspawn_hook.h"
21 #include "appspawn_modulemgr.h"
22 #include "appspawn_manager.h"
23 #include "appspawn_service.h"
24 #include "parameter.h"
25 #include "securec.h"
26
27 #define APPSPAWN_PRELOAD "libappspawn_helper.z.so"
28
29 #ifndef CJAPP_SPAWN
30 static AppSpawnStartArgTemplate g_appSpawnStartArgTemplate[PROCESS_INVALID] = {
31 {APPSPAWN_SERVER_NAME, {MODE_FOR_APP_SPAWN, MODULE_APPSPAWN, APPSPAWN_SOCKET_NAME, APPSPAWN_SERVER_NAME, 1}},
32 {NWEBSPAWN_SERVER_NAME, {MODE_FOR_NWEB_SPAWN, MODULE_NWEBSPAWN, NWEBSPAWN_SOCKET_NAME, NWEBSPAWN_SERVER_NAME, 1}},
33 {"app_cold", {MODE_FOR_APP_COLD_RUN, MODULE_APPSPAWN, APPSPAWN_SOCKET_NAME, APPSPAWN_SERVER_NAME, 0}},
34 {"nweb_cold", {MODE_FOR_NWEB_COLD_RUN, MODULE_NWEBSPAWN, APPSPAWN_SOCKET_NAME, NWEBSPAWN_SERVER_NAME, 0}},
35 {NATIVESPAWN_SERVER_NAME, {MODE_FOR_NATIVE_SPAWN, MODULE_NATIVESPAWN, NATIVESPAWN_SOCKET_NAME,
36 NATIVESPAWN_SERVER_NAME, 1}},
37 {NWEBSPAWN_RESTART, {MODE_FOR_NWEB_SPAWN, MODULE_NWEBSPAWN, NWEBSPAWN_SOCKET_NAME, NWEBSPAWN_SERVER_NAME, 1}},
38 {HYBRIDSPAWN_SERVER_NAME, {MODE_FOR_HYBRID_SPAWN, MODULE_HYBRIDSPAWN, HYBRIDSPAWN_SOCKET_NAME,
39 HYBRIDSPAWN_SERVER_NAME, 1}},
40 };
41 #else
42 static AppSpawnStartArgTemplate g_appCJSpawnStartArgTemplate[CJPROCESS_INVALID] = {
43 {CJAPPSPAWN_SERVER_NAME, {MODE_FOR_CJAPP_SPAWN, MODULE_APPSPAWN, CJAPPSPAWN_SOCKET_NAME, CJAPPSPAWN_SERVER_NAME,
44 1}},
45 {"app_cold", {MODE_FOR_APP_COLD_RUN, MODULE_APPSPAWN, CJAPPSPAWN_SOCKET_NAME, CJAPPSPAWN_SERVER_NAME, 0}},
46 };
47 #endif
48
CheckPreload(char * const argv[])49 static void CheckPreload(char *const argv[])
50 {
51 char buf[256] = APPSPAWN_PRELOAD; // 256 is enough in most cases
52 char *preload = getenv("LD_PRELOAD");
53 char *pos = preload ? strstr(preload, APPSPAWN_PRELOAD) : NULL;
54 if (pos) {
55 int len = pos - preload;
56 len = sprintf_s(buf, sizeof(buf), "%.*s%s", len, preload, pos + strlen(APPSPAWN_PRELOAD));
57 APPSPAWN_CHECK(len >= 0, return, "preload too long?: %{public}s", preload);
58 if (len == 0) {
59 int ret = unsetenv("LD_PRELOAD");
60 APPSPAWN_CHECK(ret == 0, return, "unsetenv fail(%{public}d)", errno);
61 } else {
62 int ret = setenv("LD_PRELOAD", buf, true);
63 APPSPAWN_CHECK(ret == 0, return, "setenv fail(%{public}d): %{public}s", errno, buf);
64 }
65 return;
66 }
67 if (preload && preload[0]) {
68 int len = sprintf_s(buf, sizeof(buf), "%s:" APPSPAWN_PRELOAD, preload);
69 APPSPAWN_CHECK(len > 0, return, "preload too long: %{public}s", preload);
70 }
71 int ret = setenv("LD_PRELOAD", buf, true);
72 APPSPAWN_CHECK(ret == 0, return, "setenv fail(%{public}d): %{public}s", errno, buf);
73 ssize_t nread = readlink("/proc/self/exe", buf, sizeof(buf) - 1);
74 APPSPAWN_CHECK(nread != -1, return, "readlink fail: /proc/self/exe: %{public}d", errno);
75 buf[nread] = 0;
76 ret = execv(buf, argv);
77 APPSPAWN_LOGE("execv fail: %{public}s: %{public}d: %{public}d", buf, errno, ret);
78 }
79
80 #ifndef NATIVE_SPAWN
GetAppSpawnStartArg(const char * serverName,AppSpawnStartArgTemplate * argTemplate,AppSpawnStartArgTemplate * argTemp,int count)81 static AppSpawnStartArgTemplate *GetAppSpawnStartArg(const char *serverName, AppSpawnStartArgTemplate *argTemplate,
82 AppSpawnStartArgTemplate *argTemp, int count)
83 {
84 for (int i = 0; i < count; i++) {
85 if (serverName == NULL || argTemplate[i].serverName == NULL) {
86 continue;
87 }
88 if (strcmp(serverName, argTemplate[i].serverName) == 0) {
89 return &argTemplate[i];
90 }
91 }
92
93 return argTemp;
94 }
95 #endif
96
97 // appspawn -mode appspawn | cold | nwebspawn -param app_property -fd clientFd
main(int argc,char * const argv[])98 int main(int argc, char *const argv[])
99 {
100 APPSPAWN_LOGI("main argc: %{public}d", argc);
101 if (argc <= 0) {
102 return 0;
103 }
104 uintptr_t start = (uintptr_t)argv[0];
105 uintptr_t end = (uintptr_t)strchr(argv[argc - 1], 0);
106 if (end == 0) {
107 return 0;
108 }
109 InitCommonEnv();
110 CheckPreload(argv);
111 (void)signal(SIGPIPE, SIG_IGN);
112 uint32_t argvSize = end - start;
113 AppSpawnStartArg *arg;
114 AppSpawnStartArgTemplate *argTemp = NULL;
115
116 #ifdef CJAPP_SPAWN
117 argTemp = &g_appCJSpawnStartArgTemplate[CJPROCESS_FOR_APP_SPAWN];
118 if (argc > MODE_VALUE_INDEX) {
119 argTemp = GetAppSpawnStartArg(argv[MODE_VALUE_INDEX], g_appCJSpawnStartArgTemplate,
120 argTemp, ARRAY_LENGTH(g_appCJSpawnStartArgTemplate));
121 }
122 #elif NATIVE_SPAWN
123 argTemp = &g_appSpawnStartArgTemplate[PROCESS_FOR_NATIVE_SPAWN];
124 #elif HYBRID_SPAWN
125 argTemp = &g_appSpawnStartArgTemplate[PROCESS_FOR_HYBRID_SPAWN];
126 if (argc > MODE_VALUE_INDEX) {
127 argTemp = GetAppSpawnStartArg(argv[MODE_VALUE_INDEX], g_appSpawnStartArgTemplate,
128 argTemp, ARRAY_LENGTH(g_appSpawnStartArgTemplate));
129 }
130 #elif NWEB_SPAWN
131 argTemp = &g_appSpawnStartArgTemplate[PROCESS_FOR_NWEB_SPAWN];
132 if (argc > MODE_VALUE_INDEX) {
133 argTemp = GetAppSpawnStartArg(argv[MODE_VALUE_INDEX], g_appSpawnStartArgTemplate,
134 argTemp, ARRAY_LENGTH(g_appSpawnStartArgTemplate));
135 }
136 #else
137 argTemp = &g_appSpawnStartArgTemplate[PROCESS_FOR_APP_SPAWN];
138 if (argc > MODE_VALUE_INDEX) {
139 argTemp = GetAppSpawnStartArg(argv[MODE_VALUE_INDEX], g_appSpawnStartArgTemplate,
140 argTemp, ARRAY_LENGTH(g_appSpawnStartArgTemplate));
141 }
142 #endif
143 arg = &argTemp->arg;
144 if (arg->initArg == 0) {
145 APPSPAWN_CHECK(argc >= ARG_NULL, return 0, "Invalid arg for cold start %{public}d", argc);
146 } else {
147 if (strcmp(argTemp->serverName, NWEBSPAWN_RESTART) == 0) { // nweb spawn restart
148 APPSPAWN_CHECK_ONLY_EXPER(argvSize >= APP_LEN_PROC_NAME, argvSize = APP_LEN_PROC_NAME);
149 } else {
150 APPSPAWN_CHECK(argvSize >= APP_LEN_PROC_NAME, return 0, "Invalid arg size for service %{public}s",
151 arg->serviceName);
152 }
153 }
154 AppSpawnContent *content = StartSpawnService(arg, argvSize, argc, argv);
155 if (content != NULL) {
156 content->runAppSpawn(content, argc, argv);
157 }
158 return 0;
159 }
160