IPMI password entry cleanup

Whenever user is removed from the system, password map in IPMI
database has to be cleaned up. Similarly password entry must
be updated when user rename happens. This commit add's API
changes for the same

Change-Id: I304c721b31fc7fbad019c85d8ca2ecc60ca398d8
Signed-off-by: Richard Marian Thomaiyar <richard.marian.thomaiyar@linux.intel.com>

1 files changed, 16 insertions, 5 deletions

diff --git a/user_channel/passwd_mgr.cpp b/user_channel/passwd_mgr.cpp
index 15e6e34..c47bc6d 100644
--- a/user_channel/passwd_mgr.cpp
+++ b/user_channel/passwd_mgr.cpp
@@ -78,7 +78,8 @@ std::string PasswdMgr::getPasswdByUserName(const std::string& userName)
     return iter->second;
 }
 
-int PasswdMgr::clearUserEntry(const std::string& userName)
+int PasswdMgr::updateUserEntry(const std::string& userName,
+                               const std::string& newUserName)
 {
     std::time_t updatedTime = getUpdatedFileTime();
     // Check file time stamp to know passwdMapList is up-to-date.
@@ -94,7 +95,7 @@ int PasswdMgr::clearUserEntry(const std::string& userName)
     }
 
     // Write passwdMap to Encryted file
-    if (updatePasswdSpecialFile(userName) != 0)
+    if (updatePasswdSpecialFile(userName, newUserName) != 0)
     {
         log<level::DEBUG>("Passwd file update failed");
         return -EIO;
@@ -330,7 +331,8 @@ int PasswdMgr::readPasswdFileData(std::vector<uint8_t>& outBytes)
     return 0;
 }
 
-int PasswdMgr::updatePasswdSpecialFile(const std::string& userName)
+int PasswdMgr::updatePasswdSpecialFile(const std::string& userName,
+                                       const std::string& newUserName)
 {
     phosphor::user::shadow::Lock lock();
 
@@ -350,7 +352,8 @@ int PasswdMgr::updatePasswdSpecialFile(const std::string& userName)
 
     if (dataBuf.size() != 0)
     {
-        inBytesLen = dataBuf.size() + EVP_CIPHER_block_size(cipher);
+        inBytesLen =
+            dataBuf.size() + newUserName.size() + EVP_CIPHER_block_size(cipher);
     }
 
     std::vector<uint8_t> inBytes(inBytesLen);
@@ -368,12 +371,20 @@ int PasswdMgr::updatePasswdSpecialFile(const std::string& userName)
                 if (userName.compare(lineStr.substr(0, userEPos)) == 0)
                 {
                     isUsrFound = true;
+                    if (!newUserName.empty())
+                    {
+                        bytesWritten += std::snprintf(
+                            reinterpret_cast<char*>(&inBytes[0]) + bytesWritten,
+                            (inBytesLen - bytesWritten), "%s%s\n",
+                            newUserName.c_str(),
+                            lineStr.substr(userEPos, lineStr.size()).data());
+                    }
                 }
                 else
                 {
                     bytesWritten += std::snprintf(
                         reinterpret_cast<char*>(&inBytes[0]) + bytesWritten,
-                        inBytesLen, "%s\n", lineStr.data());
+                        (inBytesLen - bytesWritten), "%s\n", lineStr.data());
                 }
             }
             linePtr = strtok_r(NULL, "\n", &nToken);