Move PSKc generation functionality to Commissioner role. (#1327)

src/cli/README.md

@@ -655,15 +655,6 @@ Set pskc with hex format.
 Done
 ```
 
-### dataset pskc \[passphrase\] \[networkname\] \[extpanid\]
-
-Generate pskc from passphrase, network name and extended panid.
-
-```bash
-> dataset pskc OpenThreadPassphrase OpenThread dead00beef00cafe
-Done
-```
-
 ### dataset userdata \[size\] \[data\]
 
 Set user specific data for the command.

src/cli/cli_dataset.cpp

@@ -666,25 +666,16 @@ exit:
 ThreadError Dataset::ProcessPSKc(otInstance *aInstance, int argc, char *argv[])
 {
     ThreadError error = kThreadError_None;
-    uint8_t extPanId[OT_EXT_PAN_ID_SIZE];
     uint16_t length;
 
-    VerifyOrExit((argc == 1) || (argc == 3), error = kThreadError_Parse);
-
-    if (argc == 1)
-    {
-        length = static_cast<uint16_t>((strlen(argv[0]) + 1) / 2);
-        VerifyOrExit(length <= OT_PSKC_MAX_SIZE, error = kThreadError_NoBufs);
-        VerifyOrExit(Interpreter::Hex2Bin(argv[0], sDataset.mPSKc.m8 + OT_PSKC_MAX_SIZE - length, length) == length,
-                     error = kThreadError_Parse);
-    }
-    else
-    {
-        VerifyOrExit(Interpreter::Hex2Bin(argv[2], extPanId, sizeof(extPanId)) >= 0, error = kThreadError_Parse);
-        SuccessOrExit(error = otGeneratePSKc(aInstance, argv[0], argv[1], extPanId, sDataset.mPSKc.m8));
-    }
+    VerifyOrExit(argc > 0, error = kThreadError_Parse);
+    length = static_cast<uint16_t>((strlen(argv[0]) + 1) / 2);
+    VerifyOrExit(length <= OT_PSKC_MAX_SIZE, error = kThreadError_NoBufs);
+    VerifyOrExit(Interpreter::Hex2Bin(argv[0], sDataset.mPSKc.m8 + OT_PSKC_MAX_SIZE - length, length) == length,
+                 error = kThreadError_Parse);
 
     sDataset.mIsPSKcSet = true;
+    (void)aInstance;
 
 exit:
     return error;