src/slp-su.c

   1 /*
   2  * libprivilege control
   3  *
   4  * Copyright (c) 2000 - 2012 Samsung Electronics Co., Ltd All Rights Reserved
   5  *
   6  * Contact: Kidong Kim <kd0228.kim@samsung.com>
   7  *
   8  * Licensed under the Apache License, Version 2.0 (the "License");
   9  * you may not use this file except in compliance with the License.
  10  * You may obtain a copy of the License at
  11  *
  12  * http://www.apache.org/licenses/LICENSE-2.0
  13  *
  14  * Unless required by applicable law or agreed to in writing, software
  15  * distributed under the License is distributed on an "AS IS" BASIS,
  16  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  17  * See the License for the specific language governing permissions and
  18  * limitations under the License.
  19  *
  20  */
  21
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include <sys/types.h>
  25 #include <sys/wait.h>
  26 #include <unistd.h>
  27
  28 #include "privilege-control.h"
  29
  30 void print_usage(void)
  31 {
  32         printf("%s", "Usage: slp-su [PKG_NAME]\n\n");
  33         printf("%s", "Execute new shell which be belonged to user related with PKG_NAME\n\n");
  34 }
  35
  36 int main(int argc, char* argv[])
  37 {
  38         pid_t pid = -1;
  39         char* buf = NULL;
  40
  41         if(argc != 2)
  42         {
  43                 fprintf(stderr, "%s", "[ERR] Check your argument.\n\n");
  44                 print_usage();
  45                 return 0;
  46         }
  47
  48         pid = fork();
  49         switch(pid)
  50         {
  51                 case 0:         // child
  52                         {
  53                                 if(set_app_privilege(argv[1], NULL, NULL) == 0) // success
  54                                 {
  55                                         fprintf(stderr, "%s", "[LOG] Success to execute set_privilege()\n");
  56                                 }
  57                                 else
  58                                 {
  59                                         fprintf(stderr, "%s", "[ERR] Fail to execute set_privilege()\n");
  60                                         exit(1);
  61                                 }
  62
  63                                 buf = getenv("HOME");
  64                                 if(buf == NULL) // fail
  65                                 {
  66                                         fprintf(stderr, "%s", "[ERR] Fail to execute getenv()\n");
  67                                         exit(0);
  68                                 }
  69                                 else
  70                                 {
  71                                         fprintf(stderr, "%s: [%s]%s", "[LOG] HOME", buf, "\n");
  72                                 }
  73
  74                                 if(chdir(buf) == 0)     // success
  75                                 {
  76                                         fprintf(stderr, "%s", "[LOG] Success to change working directory\n");
  77                                 }
  78                                 else
  79                                 {
  80                                         fprintf(stderr, "%s", "[ERR] Fail to execute chdir()\n");
  81                                         exit(0);
  82                                 }
  83
  84                                 execl("/bin/sh", "/bin/sh", NULL);
  85                                 break;
  86                         }
  87                 case -1:        // error
  88                         {
  89                                 fprintf(stderr, "%s", "[ERR] Fail to execute fork()\n");
  90                                 exit(1);
  91                                 break;
  92                         }
  93                 default:        // parent
  94                         {
  95                                 wait((int*)0);
  96                                 fprintf(stderr, "%s", "[LOG] Parent end\n");
  97                                 exit(0);
  98                         }
  99         }
 100
 101         return 1;
 102 }