104 lines
2.8 KiB
C
104 lines
2.8 KiB
C
/* $Id$
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*****************************************************************************
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*
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* File: fko_user.c
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*
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* Author: Damien S. Stuart
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*
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* Purpose: Set/Get the current username.
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*
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* Copyright (C) 2008 Damien Stuart (dstuart@dstuart.org)
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*
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* License (GNU Public License):
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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* USA
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*
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*****************************************************************************
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*/
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#include "fko_common.h"
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#include "fko.h"
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/* Get or Set the username for the fko context spa data.
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*/
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int fko_set_username(fko_ctx_t *ctx, const char *spoof_user)
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{
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char *username = NULL;
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/* Must be initialized
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*/
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if(!CTX_INITIALIZED(ctx))
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return FKO_ERROR_CTX_NOT_INITIALIZED;
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/* If spoof_user was not passed in, check for a SPOOF_USER enviroment
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* variable. If it is set, use its value.
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*/
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if(spoof_user != NULL && strlen(spoof_user))
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username = (char*)spoof_user;
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else
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username = getenv("SPOOF_USER");
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/* Try to get the username from the system.
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*/
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if(username == NULL)
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{
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#ifdef _XOPEN_SOURCE
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/* cuserid will return the effective user (i.e. su or setuid).
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*/
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username = cuserid(NULL);
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#else
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username = getlogin();
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#endif
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/* If we did not get a name using the above methods, try the
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* LOGNAME or USER environment variables. If none of those work,
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* then we bail with an error.
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*/
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if(username == NULL)
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if((username = getenv("LOGNAME")) == NULL)
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if((username = getenv("USER")) == NULL)
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return(FKO_ERROR_USERNAME_UNKNOWN);
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}
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/* --DSS XXX: Bail out for now. But consider just
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* truncating in the future...
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*/
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if(strlen(username) > MAX_SPA_USERNAME_SIZE)
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return(FKO_ERROR_DATA_TOO_LARGE);
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/* Just in case this is a subsquent call to this function. We
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* do not want to be leaking memory.
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*/
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if(ctx->username != NULL)
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free(ctx->username);
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ctx->username = strdup(username);
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if(ctx->username == NULL)
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return(FKO_ERROR_MEMORY_ALLOCATION);
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return(FKO_SUCCESS);
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}
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/* Return the current username for this fko context.
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*/
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char* fko_get_username(fko_ctx_t *ctx)
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{
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/* Must be initialized
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*/
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if(!CTX_INITIALIZED(ctx))
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return NULL;
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return(ctx->username);
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}
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/***EOF***/
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