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Revert parts of previous commits and use a temporary variable to avoid

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an invalid type pun.
This commit is contained in:
Dag-Erling Smørgrav 2005-04-08 11:19:50 +00:00
parent 101198470f
commit a049d7b097
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=144795
1 changed files with 8 additions and 37 deletions
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45
libexec/rexecd/rexecd.c
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@ -86,8 +86,6 @@ char default_shell[] = _PATH_BSHELL;
static void doit(struct sockaddr *);
static void getstr(char *, int, const char *);
static void error(const char *fmt, ...);
static struct passwd *xgetpwnam(const char *, struct passwd *, char **,
size_t *);
int no_uid_0 = 1;
@ -136,10 +134,9 @@ doit(struct sockaddr *fromp)
{
char *cmdbuf, *cp;
int maxcmdlen;
char userbuf[16], pass[16];
struct passwd *pwd, pwd_storage;
char *pwdbuf, *user;
size_t pwdbuflen;
char user[16], pass[16];
struct passwd *pwd;
const void *item;
int fd, r, sd;
u_short port;
int pv[2], pid, cc, nfds;
@ -189,22 +186,20 @@ doit(struct sockaddr *fromp)
if (connect(sd, fromp, fromp->sa_len) < 0)
exit(1);
}
user = userbuf;
getstr(userbuf, sizeof(userbuf), "username");
getstr(user, sizeof(user), "username");
getstr(pass, sizeof(pass), "password");
getstr(cmdbuf, maxcmdlen, "command");
(void) alarm(0);
pwdbuflen = 0;
pwdbuf = NULL;
if (!pam_ok(pam_start("rexecd", user, &pamc, &pamh)) ||
!pam_ok(pam_set_item(pamh, PAM_RHOST, remote)) ||
!pam_ok(pam_set_item(pamh, PAM_AUTHTOK, pass)) ||
!pam_ok(pam_authenticate(pamh, pam_flags)) ||
!pam_ok(pam_acct_mgmt(pamh, pam_flags)) ||
!pam_ok(pam_get_item(pamh, PAM_USER, (const void **)&user)) ||
(pwd = xgetpwnam(user, &pwd_storage, &pwdbuf,
&pwdbuflen)) == NULL || (pwd->pw_uid == 0 && no_uid_0)) {
!pam_ok(pam_get_item(pamh, PAM_USER, &item)) || item == NULL ||
strlen(item) >= sizeof(user) || strcpy(user, item) == NULL ||
(pwd = getpwnam(user)) == NULL ||
(pwd->pw_uid == 0 && no_uid_0)) {
syslog(LOG_ERR, "%s LOGIN REFUSED from %s", user, remote);
error("Login incorrect.\n");
exit(1);
@ -329,27 +324,3 @@ getstr(char *buf, int cnt, const char *field)
}
} while (c != 0);
}
static struct passwd *
xgetpwnam(const char *user, struct passwd *pwd_storage, char **pwdbuf,
size_t *pwdbuflen)
{
struct passwd *pwd;
size_t needed;
int rv;
needed = (*pwdbuflen == 0) ? BUFSIZ : *pwdbuflen;
pwd = NULL;
do {
if (needed != *pwdbuflen) {
if ((*pwdbuf = reallocf(*pwdbuf, needed)) == NULL) {
syslog(LOG_ERR, "Cannot allocate memory");
error("Cannot allocate memory.\n");
exit(1);
} else
*pwdbuflen = needed;
}
rv = getpwnam_r(user, pwd_storage, *pwdbuf, *pwdbuflen, &pwd);
} while (pwd == NULL && rv == ERANGE && (needed <<= 1));
return pwd;
}