diff options
Diffstat (limited to 'libexec/rexecd/rexecd.c')
| -rw-r--r-- | libexec/rexecd/rexecd.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/libexec/rexecd/rexecd.c b/libexec/rexecd/rexecd.c index a8687202a6777..ea8977f616c6b 100644 --- a/libexec/rexecd/rexecd.c +++ b/libexec/rexecd/rexecd.c @@ -132,7 +132,8 @@ main(int argc, char *argv[]) static void doit(struct sockaddr *fromp) { - char cmdbuf[NCARGS+1], *cp; + char *cmdbuf, *cp; + int maxcmdlen; char user[16], pass[16]; struct passwd *pwd; int fd, r, sd; @@ -142,6 +143,10 @@ doit(struct sockaddr *fromp) char buf[BUFSIZ], sig; int one = 1; + maxcmdlen = (int)sysconf(_SC_ARG_MAX); + if (maxcmdlen <= 0 || (cmdbuf = malloc(maxcmdlen)) == NULL) + exit(1); + (void) signal(SIGINT, SIG_DFL); (void) signal(SIGQUIT, SIG_DFL); (void) signal(SIGTERM, SIG_DFL); @@ -182,7 +187,7 @@ doit(struct sockaddr *fromp) } getstr(user, sizeof(user), "username"); getstr(pass, sizeof(pass), "password"); - getstr(cmdbuf, sizeof(cmdbuf), "command"); + getstr(cmdbuf, maxcmdlen, "command"); (void) alarm(0); if ((pwd = getpwnam(user)) == NULL || (pwd->pw_uid = 0 && no_uid_0) || |