mirror of
https://github.com/topjohnwu/Magisk.git
synced 2024-12-25 14:07:38 +00:00
3dfcc6b0be
- Checkout from https://github.com/seSuperuser/Superuser (commit: 69f84dd7a035b4a9f18dea69d9e0452bf0f73103) - Move Superuser/Superuser/jni/su/* to root - Move Superuser/jni/sqlite3/* to sqlite3
113 lines
2.8 KiB
C
113 lines
2.8 KiB
C
/*
|
|
** Copyright 2012, The CyanogenMod Project
|
|
**
|
|
** Licensed under the Apache License, Version 2.0 (the "License");
|
|
** you may not use this file except in compliance with the License.
|
|
** You may obtain a copy of the License at
|
|
**
|
|
** http://www.apache.org/licenses/LICENSE-2.0
|
|
**
|
|
** Unless required by applicable law or agreed to in writing, software
|
|
** distributed under the License is distributed on an "AS IS" BASIS,
|
|
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
** See the License for the specific language governing permissions and
|
|
** limitations under the License.
|
|
*/
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <unistd.h>
|
|
#include <limits.h>
|
|
#include <fcntl.h>
|
|
#include <errno.h>
|
|
#include <ctype.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#include "utils.h"
|
|
|
|
/* reads a file, making sure it is terminated with \n \0 */
|
|
char* read_file(const char *fn)
|
|
{
|
|
struct stat st;
|
|
char *data = NULL;
|
|
|
|
int fd = open(fn, O_RDONLY);
|
|
if (fd < 0) return data;
|
|
|
|
if (fstat(fd, &st)) goto oops;
|
|
|
|
data = malloc(st.st_size + 2);
|
|
if (!data) goto oops;
|
|
|
|
if (read(fd, data, st.st_size) != st.st_size) goto oops;
|
|
close(fd);
|
|
data[st.st_size] = '\n';
|
|
data[st.st_size + 1] = 0;
|
|
return data;
|
|
|
|
oops:
|
|
close(fd);
|
|
if (data) free(data);
|
|
return NULL;
|
|
}
|
|
|
|
int get_property(const char *data, char *found, const char *searchkey, const char *not_found)
|
|
{
|
|
char *key, *value, *eol, *sol, *tmp;
|
|
if (data == NULL) goto defval;
|
|
int matched = 0;
|
|
sol = strdup(data);
|
|
while((eol = strchr(sol, '\n'))) {
|
|
key = sol;
|
|
*eol++ = 0;
|
|
sol = eol;
|
|
|
|
value = strchr(key, '=');
|
|
if(value == 0) continue;
|
|
*value++ = 0;
|
|
|
|
while(isspace(*key)) key++;
|
|
if(*key == '#') continue;
|
|
tmp = value - 2;
|
|
while((tmp > key) && isspace(*tmp)) *tmp-- = 0;
|
|
|
|
while(isspace(*value)) value++;
|
|
tmp = eol - 2;
|
|
while((tmp > value) && isspace(*tmp)) *tmp-- = 0;
|
|
|
|
if (strncmp(searchkey, key, strlen(searchkey)) == 0) {
|
|
matched = 1;
|
|
break;
|
|
}
|
|
}
|
|
int len;
|
|
if (matched) {
|
|
len = strlen(value);
|
|
if (len >= PROPERTY_VALUE_MAX)
|
|
return -1;
|
|
memcpy(found, value, len + 1);
|
|
} else goto defval;
|
|
return len;
|
|
|
|
defval:
|
|
len = strlen(not_found);
|
|
memcpy(found, not_found, len + 1);
|
|
return len;
|
|
}
|
|
|
|
/*
|
|
* Fast version of get_property which purpose is to check
|
|
* whether the property with given prefix exists.
|
|
*
|
|
* Assume nobody is stupid enough to put a propery with prefix ro.cm.version
|
|
* in his build.prop on a non-CM ROM and comment it out.
|
|
*/
|
|
int check_property(const char *data, const char *prefix)
|
|
{
|
|
if (!data)
|
|
return 0;
|
|
return strstr(data, prefix) != NULL;
|
|
}
|