tools/tesh2/src/is_cmd.c

   1 #include <is_cmd.h>
   2
   3 #include <explode.h>
   4
   5 #ifdef WIN32
   6 static int is_w32_binary(const char* cmd)
   7 {
   8         DWORD binary_type;
   9
  10         GetBinaryType(cmd, &binary_type);
  11
  12         if(SCS_32BIT_BINARY == binary_type || SCS_64BIT_BINARY == binary_type || SCS_64BIT_BINARY == binary_type)
  13                 return 1;
  14
  15         return 0;
  16 }
  17 #endif
  18
  19 int
  20 is_cmd(char** path, char** builtin, const char* p)
  21 {
  22         size_t i = 0;
  23         size_t j = 0;
  24         int yes = 0;
  25
  26         struct stat stat_buff = {0};
  27         char command[PATH_MAX + 1] = {0};
  28         char buff[PATH_MAX + 1] = {0};
  29
  30         size_t len = strlen(p);
  31
  32         if(!p)
  33                 return EINVAL;
  34
  35         while(i < len)
  36         {
  37                 if(p[i] != ' ' && p[i] != '\t' && p[i] != '>')
  38                         command[j++] = p[i];
  39                 else
  40                         break;
  41
  42                 i++;
  43         }
  44
  45         /* check first if it's a shell buitin */
  46
  47         if(builtin)
  48         {
  49                 for(i = 0; builtin[i] != NULL; i++)
  50                 {
  51                         if(!strcmp(builtin[i], command))
  52                                 return 0;
  53                 }
  54         }
  55
  56         if(stat(command, &stat_buff) || !S_ISREG(stat_buff.st_mode))
  57         {
  58                 if(path)
  59                 {
  60                         for (i = 0; path[i] != NULL; i++)
  61                         {
  62                                 sprintf(buff,"%s/%s",path[i], command);
  63
  64                                 if(!stat(buff, &stat_buff) && S_ISREG(stat_buff.st_mode))
  65                                 {
  66                                         #ifdef WIN32
  67                                         if(is_w32_binary(buff))
  68                                                 yes = 1;
  69                                                 break;
  70                                         #else
  71                                         if(!access(buff, X_OK))
  72                                         {
  73                                                 yes = 1;
  74                                                 break;
  75                                         }
  76                                         #endif
  77                                 }
  78                         }
  79                 }
  80         }
  81         else
  82         {
  83                 #ifdef WIN32
  84                 if(is_w32_binary(command))
  85                         yes = 1;
  86                 #else
  87                 if(!access(command, X_OK))
  88                         yes = 1;
  89                 #endif
  90         }
  91
  92         return yes ? 0 : ECMDNOTFOUND;
  93 }
  94