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use md5.c for computation of md5sums

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create a framework for computing digests and reading digests in TWRP
add space for backwards compatibility with bb md5sum
Change-Id: Ia18e3f430eed5eba22e5052d39b9b8d88ecd4536
This commit is contained in:
bigbiff bigbiff
2013-03-07 08:07:34 -05:00
parent 3578701315
commit cdcfee48b9
10 changed files with 488 additions and 64 deletions
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twrp-functions.cpp
+15 -43
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@@ -49,48 +49,6 @@ int TWFunc::Exec_Cmd(string cmd, string &result) {
return ret;
}
/* Checks md5 for a path
Return values:
-1 : MD5 does not exist
0 : Failed
1 : Success */
int TWFunc::Check_MD5(string File) {
int ret;
string Command, DirPath, MD5_File, Sline, Filename, MD5_File_Filename, OK;
char line[255];
size_t pos;
string result;
MD5_File = File + ".md5";
if (Path_Exists(MD5_File)) {
DirPath = Get_Path(File);
MD5_File = Get_Filename(MD5_File);
Command = "cd '" + DirPath + "' && /sbin/busybox md5sum -c '" + MD5_File + "'";
Exec_Cmd(Command, result);
pos = result.find(":");
if (pos != string::npos) {
Filename = Get_Filename(File);
MD5_File_Filename = result.substr(0, pos);
OK = result.substr(pos + 2, result.size() - pos - 2);
if (Filename == MD5_File_Filename && (OK == "OK" || OK == "OK\n")) {
//MD5 is good, return 1
ret = 1;
} else {
// MD5 is bad, return 0
ret = 0;
}
} else {
// MD5 is bad, return 0
ret = 0;
}
} else {
//No md5 file, return -1
ret = -1;
}
return ret;
}
// Returns "file.name" from a full /path/to/file.name
string TWFunc::Get_Filename(string Path) {
size_t pos = Path.find_last_of("/");
@@ -482,10 +440,24 @@ unsigned int TWFunc::Get_D_Type_From_Stat(string Path) {
}
int TWFunc::read_file(string fn, string& results) {
ifstream file;
file.open(fn.c_str(), ios::in);
if (file.is_open()) {
file >> results;
file.close();
return 0;
}
LOGI("Cannot find file %s\n", fn.c_str());
return -1;
}
int TWFunc::read_file(string fn, vector<string>& results) {
ifstream file;
string line;
file.open(fn.c_str(), ios::in);
if (file.is_open()) {
file >> results;
while (getline(file, line))
results.push_back(line);
file.close();
return 0;
}