src/osdep/sysname.c

   1 /* Get system name */
   2
   3 #ifdef HAVE_CONFIG_H
   4 #include "config.h"
   5 #endif
   6
   7 #include <stdio.h>
   8 #include <string.h>
   9 #ifdef HAVE_SYS_UTSNAME_H
  10 #include <sys/utsname.h>
  11 #endif
  12
  13 #include "elinks.h"
  14
  15 #include "osdep/sysname.h"
  16 #include "util/memory.h"
  17 #include "util/string.h"
  18
  19
  20 unsigned char system_name[MAX_STR_LEN];
  21
  22 #ifdef HAVE_POPEN
  23 static int
  24 got_it_from_uname_command(void)
  25 {
  26         FILE *f;
  27         unsigned char *p;
  28
  29         f = popen("uname -srm", "r");
  30         if (!f) return 0;
  31
  32         if (fread(system_name, 1, sizeof(system_name) - 1, f) <= 0) {
  33                 pclose(f);
  34                 return 0;
  35         }
  36
  37         pclose(f);
  38
  39         system_name[MAX_STR_LEN - 1] = '\0'; /* Safer. */
  40         p = system_name;
  41         while (*p >= ' ') p++;
  42         *p = '\0';
  43
  44         if (system_name[0])
  45                 return 1;
  46
  47         return 0;
  48 }
  49 #else
  50 #define got_it_from_uname_command() 0
  51 #endif
  52
  53 void
  54 get_system_name(void)
  55 {
  56 #if defined(HAVE_SYS_UTSNAME_H) && defined(HAVE_UNAME)
  57         struct utsname name;
  58
  59         if (!uname(&name)) {
  60                 snprintf(system_name, sizeof(system_name),
  61                          "%s %s %s", name.sysname, name.release, name.machine);
  62                 return;
  63         }
  64 #endif
  65
  66         if (got_it_from_uname_command()) return;
  67
  68         safe_strncpy(system_name, SYSTEM_NAME, sizeof(system_name));
  69 }