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#include "user.h"
#include <stdio.h>
#include <string.h>
void display_user_name() {
char buf[128];
FILE *p = popen("whoami", "r");
if (!p) {
fprintf(stderr, "「whoami」コマンドを実効に失敗");
return;
}
while (fgets(buf, sizeof(buf), p) != NULL) {
buf[strcspn(buf, "\n")] = '\0';
printf("%s", buf);
}
pclose(p);
}
void display_user_host() {
char buf[64];
const char *filename;
#ifdef __OpenBSD__
filename = "/etc/myname";
#else
filename = "/etc/hostname";
#endif
FILE *f = fopen(filename, "r");
if (!f) {
snprintf(buf, sizeof(buf), "「%s」を見つけられません。", filename);
perror(buf);
return;
}
while (fgets(buf, sizeof(buf), f) != NULL) {
printf("%s", buf);
}
/* char hostname[128]; */
/* int cnt = 0; */
/* for (int i = 0; i < 128; i++) { */
/* unsigned char key; */
/* fread(&key, sizeof(key), 1, f); */
/* hostname[i] = key; */
/* cnt += 1; */
/* } */
/* hostname[cnt] = '\0'; */
fclose(f);
}
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