void
Id_SetSuperUser(Bool yes) // IN: TRUE to acquire super user, FALSE to release
{
if (!IsSuperUser() == !yes) {
// settid(2) fails on spurious transitions.
return;
}
if (yes) {
syscall(SYS_settid, KAUTH_UID_NONE, KAUTH_GID_NONE /* Ignored. */);
} else {
if (syscall(SYS_settid, getuid(), getgid()) == -1) {
Log("Failed to release super user privileges.\n");
}
}
}
/***********************************************************************
* Function Name : tokenParser
* Description : parse the token and process it
* comparing possibly non-NULL strings.
* Input : @pCli, cli control structure
* @pTbl, token table
* Output :
* Return value : CLI_PARSE_OK, parse token success
* CLI_PARSE_ERROR, parse token failure
* CLI_PARSE_NO_TBL, no token table valid
* CLI_PARSE_NO_VALUE,no parameter in token
* CLI_PARSE_TOO_FEW, not enough items in token
* CLI_PARSE_TOO_MANY, items of token is more than it have to
* CLI_PARSE_UNKNOWN, do not match any token in the token table
* CLI_PARSE_INPUT_ERROR, withdraw charactor error form input
* CLI_PARSE_INVALID_PARAMETER, parameter from item is invalide
* CLI_PARSE_MULTI_MATCHES, inputed token matchs more than one token in the token table
* CLI_PARSE_QUIT, parse terminate unexpected
* CLI_PARSE_NOMESSAGE, no message parse from token
***********************************************************************/
LOCAL int tokenParser(CLI * pCli, struct parse_token_s *pTbl)
{
char *p;
char *pFilter;
int rc = 0;
CLIDEBUG(("tokenParser\n"));
pCli->tokenLvl++;
pCli->ParseTbl[pCli->parseTblIdx++] = pTbl;
p = tokenPopWoCase(pCli);
if (p)
{
struct parse_token_s *pTblx;
int len = strlen(p);
int k, match;
for (pTblx = pTbl; pTblx->fHandler; pTblx++)
{
pTblx->abbrevMatchCnt = 0;
}
CLIDEBUG(("p: %s, len: %d\n", p, strlen(p)));
pFilter = p;
match = 0;
for (pTblx = pTbl; pTblx->fHandler; pTblx++)
{
if (len == strlen(pTblx->pCmd) &&
tokenIsValidOpMode(pCli, pTblx) == TRUE &&
tokencmp(p, pTblx->pCmd, len) == 0)
{
CLIDEBUG(("Exact match found\n"));
match = 1; /* exact match */
pTblx->abbrevMatchCnt = len;
break;
}
}
if (match == 0)
{
for (k = 0; k < len; k++)
{
for (pTblx = pTbl; pTblx->fHandler; pTblx++)
{
/* Don't let priv and hidden tokens out of the bag */
if (pCli->securityCheck && tokenIsProtected(pTblx) == TRUE
&& IsSuperUser() == FALSE)
{
continue;
}
if (tokenIsHidden(pTblx)
|| tokenIsValidOpMode(pCli, pTblx) == FALSE)
{
continue;
}
if (*(p + k) && *(pTblx->pCmd + k))
{
if (*(p + k) == *(pTblx->pCmd + k))
{
if (k == 0)
{
match++;
}
if (k == pTblx->abbrevMatchCnt)
{
pTblx->abbrevMatchCnt++;
CLIDEBUG(("%s -- abbrevMatch: %d\n",
pTblx->pCmd, pTblx->abbrevMatchCnt));
}
}
}
}
}
}
CLIDEBUG(("%d match found, filter: %s\n", match, pFilter));
if (match == 1)
{
match = 0;
pFilter = p;
len = strlen(p);
for (pTblx = pTbl; pTblx->fHandler; pTblx++)
{
if (pTblx->abbrevMatchCnt)
{
if (len <= strlen(pTblx->pCmd))
{
if (tokencmp(p, pTblx->pCmd, len) == 0)
{
if (!pCli->securityCheck || IsSuperUser() == TRUE ||
tokenIsProtected(pTblx) == FALSE)
{
//Deleted by Mario Huang, it seems useless
//tokenCurTblSet(pTblx);
rc = (*pTblx->fHandler) (pCli, p,
pTblx->pNxtParseTbl);
if (rc == CLI_PARSE_NO_VALUE
|| rc == CLI_PARSE_UNKNOWN
|| rc == CLI_PARSE_INVALID_PARAMETER)
{
if (rc == CLI_PARSE_INVALID_PARAMETER)
{
helpCmdScan(pCli,
pCli->ParseTbl[pCli->
parseTblIdx -
1], "", NULL,
1);
}
else
{
if (rc == CLI_PARSE_UNKNOWN)
{
helpCmdScan(pCli,
pCli->ParseTbl[pCli->
parseTblIdx
- 1],
pTblx->pCmd, pFilter,
1);
}
else
{
helpCmdScan(pCli,
pTblx->pNxtParseTbl,
pTblx->pCmd, NULL, 1);
}
}
rc = (rc == CLI_PARSE_NO_VALUE) ?
CLI_PARSE_TOO_FEW : CLI_PARSE_ERROR;
}
/* Count the related setting functions have been done successfully,
* so as to do associated applying action while excute apply cmd.
* add by Tony 2007.9.30
*/
else if (rc == CLI_PARSE_OK)
{
if (pTblx->pApplyActionTbl)
pTblx->pApplyActionTbl->settingCnt++;
}
return rc;
}
match = 1;
}
CLIDEBUG(("tokenParser -- %s can't match with table item %s, pTbl: %p\n", p, pTblx->pCmd, (void *) pTblx));
}
}
}
}
else if (match != 0)
{
/*
* Multiple matches found. Find the one with the highest match
*/
int cnt;
cnt = pTbl->abbrevMatchCnt;
for (pTblx = pTbl; pTblx->fHandler; pTblx++)
{
if (pTblx->abbrevMatchCnt)
{
if (pTblx->abbrevMatchCnt > cnt)
{
cnt = pTblx->abbrevMatchCnt;
}
}
}
CLIDEBUG(("highest abmatch cnt: %d\n", cnt));
match = 0;
for (pTblx = pTbl; pTblx->fHandler; pTblx++)
{
if (pTblx->abbrevMatchCnt == cnt)
{
if (cnt == strlen(p) && cnt == strlen(pTblx->pCmd))
{ /* any possibility??? these equals exact matching */
match = 1;
break;
}
match++;
}
}
CLIDEBUG(("match -- %d\n", match));
if (match)
{
len = strlen(p);
for (pTblx = pTbl; pTblx->fHandler; pTblx++)
{
if (pTblx->abbrevMatchCnt == cnt)
{
if (len <= strlen(pTblx->pCmd))
{
if (tokencmp(p, pTblx->pCmd, len) == 0)
{
/* Handler the highest matched command */
//if(match == 1) {
if (!pCli->securityCheck
|| IsSuperUser() == TRUE
|| tokenIsProtected(pTblx) == FALSE)
{
//Deleted by Mario Huang, it seems useless
//tokenCurTblSet(pTblx);
rc = (*pTblx->fHandler) (pCli, p,
pTblx->
pNxtParseTbl);
if (rc == CLI_PARSE_NO_VALUE)
{
helpCmdScan(pCli, pTblx->pNxtParseTbl,
pTblx->pCmd, NULL, 1);
rc = CLI_PARSE_TOO_FEW;
}
/* Count the related setting functions have been done successfully,
* so as to do associated applying action while excute apply cmd.
* add by Tony 2007.9.30
*/
else if (rc == CLI_PARSE_OK)
{
if (pTblx->pApplyActionTbl)
pTblx->pApplyActionTbl->
settingCnt++;
}
return rc;
}
//}
//else {
//helpCmdScan(pCli, pTblx, pTblx->pCmd, pTblx->pCmd, 1);
//rc = CLI_PARSE_MULTI_MATCHES;
//}
}
}
break;
}
}
if (rc == CLI_PARSE_MULTI_MATCHES)
return rc;
CLIDEBUG(("%s won't match with table item %s, pTbl: %p\n",
p, pTblx->pCmd, (void *) pTblx));
}
}
if (pCli->tokenLvl > 1)
{
uiPrintf("Invalid parameter: %s", p);
}
else
{
uiPrintf("Unknown command: %s", p);
}
while ((p = tokenPop(pCli)) != NULL)
{
uiPrintf(" %s", p);
}
uiPrintf("\n");
CLIDEBUG(("parseTblIdx: %d\n", pCli->parseTblIdx));
if (!(pCli->parseTblIdx - 1 == 0 &&
*(pCli->ParseTbl[pCli->parseTblIdx - 1]->pCmd) == '#'))
{
if (pCli->tokenLvl <= 2)
{
uiPrintf("Type \"help\" for a list of valid commands.\n");
}
else
{
uiPrintf("List of valid parameter(s):\n");
}
}
return pCli->tokenLvl <=
2 ? CLI_PARSE_UNKNOWN : CLI_PARSE_INVALID_PARAMETER;
}
return CLI_PARSE_OK;
}
/***********************************************************************
* Function Name : helpCmdScan
* Description : search for the help command
* Input : @pCli, cli control structure
* @pTbl, token table
* @pTxt, next token
* @pFilter, token filter
* @verbose, version
* Output :
* Return value : CLI_PARSE_OK, help scan success
***********************************************************************/
int helpCmdScan(CLI * pCli, struct parse_token_s *pTbl, char *pTxt,
char *pFilter, int verbose)
{
struct parse_token_s *pTblx;
char buf[132];
int bmatch;
if (pTbl == NULL || pTxt == NULL)
{
return CLI_PARSE_OK;
}
for (pTblx = pTbl; pTblx->fHandler; pTblx++)
{
if (pCli->securityCheck)
{
if (tokenIsProtected(pTblx) == TRUE && IsSuperUser() == FALSE)
continue;
if (tokenIsHidden(pTblx) == TRUE
|| tokenIsValidOpMode(pCli, pTblx) == FALSE)
continue;
}
/* murphy van 2004-06-11 add */
if (tokenIsValidOpMode(pCli, pTblx) == FALSE)
continue;
if (verbose && pTblx->pNxtParseTbl)
{
sprintf(buf, "%s %s", pTxt, pTblx->pCmd);
if (verbose == 1)
{
if (pFilter)
{
bmatch = bcmp(pTblx->pCmd, pFilter, strlen(pFilter));
if (bmatch == 0)
{
helpCmdScan(pCli, pTblx->pNxtParseTbl, buf, NULL, 0);
}
}
else
{
helpCmdScan(pCli, pTblx->pNxtParseTbl, buf, pFilter, 0);
}
}
if (verbose >= 10)
{
helpCmdScan(pCli, pTblx->pNxtParseTbl, buf, NULL, verbose);
}
}
else
{
sprintf(buf, "%s %s", pTxt, pTblx->pCmd);
if (pTblx->pHelpText)
{
if (pFilter)
{
bmatch = bcmp(pTblx->pCmd, pFilter, strlen(pFilter));
if (bmatch == 0)
{
uiPrintf("%-35s -- %s\n", buf,
pTblx->pHelpText ? pTblx->pHelpText : "");
}
}
else
{
uiPrintf("%-35s -- %s\n", buf,
pTblx->pHelpText ? pTblx->pHelpText : "");
}
}
}
}
return CLI_PARSE_OK;
}
