1 /*
2  * Copyright (C) 2015 The Android Open Source Project
3  *
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
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
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.
15  */
16 
17 #include <errno.h>
18 #include <stdarg.h>
19 
20 #include <string>
21 
22 #include <android-base/stringprintf.h>
23 #include <log/log.h>
24 
25 // Forward declarations.
26 class Backtrace;
27 struct EventTagMap;
28 struct AndroidLogEntry;
29 
30 std::string g_fake_log_buf;
31 
32 std::string g_fake_log_print;
33 
resetLogs()34 void resetLogs() {
35   g_fake_log_buf = "";
36   g_fake_log_print = "";
37 }
38 
getFakeLogBuf()39 std::string getFakeLogBuf() {
40   return g_fake_log_buf;
41 }
42 
getFakeLogPrint()43 std::string getFakeLogPrint() {
44   return g_fake_log_print;
45 }
46 
__android_log_buf_write(int bufId,int prio,const char * tag,const char * msg)47 extern "C" int __android_log_buf_write(int bufId, int prio, const char* tag, const char* msg) {
48   g_fake_log_buf += std::to_string(bufId) + ' ' + std::to_string(prio) + ' ';
49   g_fake_log_buf += tag;
50   g_fake_log_buf += ' ';
51   g_fake_log_buf += msg;
52   return 1;
53 }
54 
__android_log_print(int prio,const char * tag,const char * fmt,...)55 extern "C" int __android_log_print(int prio, const char* tag, const char* fmt, ...) {
56   g_fake_log_print += std::to_string(prio) + ' ';
57   g_fake_log_print += tag;
58   g_fake_log_print += ' ';
59 
60   va_list ap;
61   va_start(ap, fmt);
62   android::base::StringAppendV(&g_fake_log_print, fmt, ap);
63   va_end(ap);
64 
65   g_fake_log_print += '\n';
66 
67   return 1;
68 }
69 
android_name_to_log_id(const char *)70 extern "C" log_id_t android_name_to_log_id(const char*) {
71   return LOG_ID_SYSTEM;
72 }
73 
android_logger_list_open(log_id_t,int,unsigned int,pid_t)74 extern "C" struct logger_list* android_logger_list_open(log_id_t, int, unsigned int, pid_t) {
75   errno = EACCES;
76   return nullptr;
77 }
78 
android_logger_list_read(struct logger_list *,struct log_msg *)79 extern "C" int android_logger_list_read(struct logger_list*, struct log_msg*) {
80   return 0;
81 }
82 
android_openEventTagMap(const char *)83 extern "C" EventTagMap* android_openEventTagMap(const char*) {
84   return nullptr;
85 }
86 
android_log_processBinaryLogBuffer(struct logger_entry *,AndroidLogEntry *,const EventTagMap *,char *,int)87 extern "C" int android_log_processBinaryLogBuffer(
88     struct logger_entry*,
89     AndroidLogEntry*, const EventTagMap*, char*, int) {
90   return 0;
91 }
92 
android_logger_list_free(struct logger_list *)93 extern "C" void android_logger_list_free(struct logger_list*) {
94 }
95