diff options
Diffstat (limited to 'src/legacy/cuserid.c')
| -rw-r--r-- | src/legacy/cuserid.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/legacy/cuserid.c b/src/legacy/cuserid.c index fd7832e4..3ff115a1 100644 --- a/src/legacy/cuserid.c +++ b/src/legacy/cuserid.c @@ -2,6 +2,7 @@ #include <pwd.h> #include <stdio.h> #include <unistd.h> +#include <string.h> char *cuserid(char *buf) { @@ -10,7 +11,10 @@ char *cuserid(char *buf) long pwb[256]; if (getpwuid_r(geteuid(), &pw, (void *)pwb, sizeof pwb, &ppw)) return 0; + size_t len = strnlen(pw.pw_name, L_cuserid); + if (len == L_cuserid) + return 0; if (!buf) buf = usridbuf; - snprintf(buf, L_cuserid, "%s", pw.pw_name); + memcpy(buf, pw.pw_name, len+1); return buf; } |