int main(int argc, char *argv[]) {
off_t who_am_i = getuid();
struct spwd *sp, *sp2;
char *user = "******";
if (who_am_i != 0) {
fprintf(stderr, "Only root can read shadow password database baby!\n");
exit(EXIT_FAILURE);
}
if ((sp = getspnam("b3h3m0th")) == NULL) {
fprintf(stderr, "Err. %s reading gestpnam()\n", strerror(errno));
exit(EXIT_FAILURE);
}
printf(" user name: %s\n", sp->sp_namp);
printf("encrypted pass: %s\n", sp->sp_pwdp);
setspent();
while ((sp2 = getspent()) != NULL) {
if(strcmp(user, sp2->sp_namp) == 0) {
printf("User %s presente nel sistema\n", user);
break;
}
printf("Searching...\n");
}
endspent();
return(EXIT_SUCCESS);
}
/*
* Read /etc/shadow.
*/
void
readshadow(void)
{
#ifdef SHADOW_PWD
struct login *lp;
struct spwd *sp;
size_t sz;
setspent();
while (sp = getspent()) {
if ((lp = findlogin(sp->sp_namp)) == NULL)
continue;
sz = strlen(sp->sp_pwdp);
lp->l_pwdp = salloc(sz + 1);
strcpy(lp->l_pwdp, sp->sp_pwdp);
lp->l_lstchg = sp->sp_lstchg;
lp->l_min = sp->sp_min;
lp->l_max = sp->sp_max;
lp->l_warn = sp->sp_warn;
lp->l_inact = sp->sp_inact;
lp->l_expire = sp->sp_expire;
lp->l_flag = sp->sp_flag;
}
endspent();
#endif /* SHADOW_PWD */
}
struct spwd * mygetspnam(const char *name){
struct spwd *sp;
setspent();
while((sp=getspent()) != NULL)
if(strcmp(name, sp->sp_namp) == 0)
break;/*found a match*/
endspent();
return(sp);
}
static VALUE
rb_shadow_getspent(VALUE self)
{
struct spwd *entry;
VALUE result;
entry = getspent();
if( entry == NULL )
return Qnil;
return convert_pw_struct( entry );
};
int main(void)
{
struct spwd *spwd;
spwd = getspnam("qy");
printf("shadow password = %s\n", spwd->sp_pwdp);
setspent();
while ((spwd = getspent()) != NULL) {
printf("shadow password = %s\n", spwd->sp_pwdp);
}
endspent();
return 0;
}
int main(int argc,char* argv[]){
struct spwd* user;
setspent();
while((user=getspent())!=NULL){
printf("loginname:%s,password:%s\n",user->sp_namp,user->sp_pwdp);
}
endspent();
user=getspnam("linuxmin");
if(user!=NULL)
printf("loginname:%s,password:%s\n",user->sp_namp,user->sp_pwdp);
printf("......\n");
return 0;
}
/* getspnam - get a shadow entry by name */
struct spwd *getspnam(const char *name)
{
struct spwd *sp;
if (!name || !strlen(name))
return NULL;
setspent();
while ((sp = getspent()) != NULL) {
if (strcmp(name, sp->sp_namp) == 0)
break;
}
endspent();
return (sp);
}
int main(void)
{
struct spwd *ptr;
setspent();
while ((ptr = getspent()) != NULL)
{
printf("name= %s\tshaow passwd = %s\n", ptr->sp_namp, ptr->sp_pwdp);
}
endspent();
return 0;
}
/* getspuid - get a shadow entry by uid */
struct spwd *getspuid(uid_t uid)
{
struct spwd *sp;
struct passwd *mypw;
if ((mypw = getpwuid(getuid())) == NULL) {
return (NULL);
}
setspent();
while ((sp = getspent()) != NULL) {
if (strcmp(mypw->pw_name, sp->sp_namp) == 0)
break;
}
endspent();
return (sp);
}
// 读取/etc/shadow文件
// 执行时sudo, 才能读取到
void op_shadow()
{
struct spwd *sp;
char name[] = "root";
// 将指针移到开始位置
setspent();
// 获取第一条记录
while((sp = getspent()) != NULL)
{
//if (strcmp(name, sp->pw_name) == 0)
//{
// printf("pw_name:%s, pw_uid:%d, pw_shell:%s\n", ptr->pw_name, ptr->pw_uid, ptr->pw_shell);
// break;
//}
printf("sp_namp:%s, sp_pwdp:%s, sp_expire:%ld\n", sp->sp_namp, sp->sp_pwdp, sp->sp_expire);
}
// 结束读取
endspent();
}
static PyObject *
spwd_getspall(PyObject *self, PyObject *args)
{
PyObject *d;
struct spwd *p;
if ((d = PyList_New(0)) == NULL)
return NULL;
setspent();
while ((p = getspent()) != NULL) {
PyObject *v = mkspent(p);
if (v == NULL || PyList_Append(d, v) != 0) {
Py_XDECREF(v);
Py_DECREF(d);
endspent();
return NULL;
}
Py_DECREF(v);
}
endspent();
return d;
}
int
main(void)
{
struct spwd *spwent;
time_t when, now;
(void) time(&now);
while ((spwent = getspent()) != NULL) {
if (spwent->sp_expire <= 0)
continue;
when = spwent->sp_expire * 24 * 60 * 60;
if (when > now)
continue;
(void) printf("%s\n", spwent->sp_namp);
}
return 0;
}
static PyObject *
spwd_getspall_impl(PyObject *module)
/*[clinic end generated code: output=4fda298d6bf6d057 input=b2c84b7857d622bd]*/
{
PyObject *d;
struct spwd *p;
if ((d = PyList_New(0)) == NULL)
return NULL;
setspent();
while ((p = getspent()) != NULL) {
PyObject *v = mkspent(p);
if (v == NULL || PyList_Append(d, v) != 0) {
Py_XDECREF(v);
Py_DECREF(d);
endspent();
return NULL;
}
Py_DECREF(v);
}
endspent();
return d;
}
int main(int argc, char * argv[])
{
struct spwd * sp;
if(argc < 2)
{
printf("Usage: %s username\n", argv[0]);
exit(-1);
}
setspent();
if((sp = getspnam(argv[1])) != NULL)
{
printf("%s, %s\n", sp->sp_namp, sp->sp_pwdp);
}
setspent();
while((sp = getspent()) != NULL)
{
printf("%s, %s\n", sp->sp_namp, sp->sp_pwdp);
}
endspent();
return 0;
}
static VALUE
rb_shadow_getspent(VALUE self)
{
struct spwd *entry;
VALUE result;
entry = getspent();
if( entry == NULL )
return Qnil;
result = rb_struct_new(rb_sPasswdEntry,
rb_tainted_str_new2(entry->sp_namp),
rb_tainted_str_new2(entry->sp_pwdp),
INT2FIX(entry->sp_lstchg),
INT2FIX(entry->sp_min),
INT2FIX(entry->sp_max),
INT2FIX(entry->sp_warn),
INT2FIX(entry->sp_inact),
INT2FIX(entry->sp_expire),
INT2FIX(entry->sp_flag),
0);
return result;
};
static const char* set_passwd(const char *name, const char *passwd, char **msg)
{
FILE *f = NULL;
struct spwd *spwd, new_spwd;
const char *en_passwd; /* encrypted password */
struct stat st;
assert(name);
assert(passwd);
/* check password format */
if ((passwd[0] != '$') ||
(passwd[1] != '0' && passwd[1] != '1' && passwd[1] != '5' && passwd[1] != '6') ||
(passwd[2] != '$')) {
asprintf(msg, "Wrong password format (user %s).", name);
return (NULL);
}
if (passwd[1] == '0') {
/* encrypt the password */
get_login_defs();
en_passwd = pw_encrypt(&(passwd[3]), crypt_make_salt(NULL, NULL));
} else {
en_passwd = passwd;
}
/*
* store encrypted password into shadow
*/
/* lock shadow file */
if (lckpwdf() != 0) {
*msg = strdup("Failed to acquire shadow file lock.");
return (NULL);
}
/* init position in shadow */
setspent();
/* open new shadow */
f = fopen(SHADOW_COPY, "w");
if (f == NULL) {
asprintf(msg, "Unable to prepare shadow copy (%s).", strerror(errno));
endspent();
ulckpwdf();
return (NULL);
}
/* get file stat of the original file to make a nice copy of it */
stat(SHADOW_ORIG, &st);
fchmod(fileno(f), st.st_mode);
fchown(fileno(f), st.st_uid, st.st_gid);
while ((spwd = getspent()) != NULL) {
if (strcmp(spwd->sp_namp, name) == 0) {
/*
* we have the entry to change,
* make the copy, modifying the original
* structure doesn't seem as a good idea
*/
memcpy(&new_spwd, spwd, sizeof(struct spwd));
new_spwd.sp_pwdp = (char*) en_passwd;
spwd = &new_spwd;
}
/* store the record into the shadow copy */
putspent(spwd, f);
}
endspent();
fclose(f);
if (rename(SHADOW_COPY, SHADOW_ORIG) == -1) {
asprintf(msg, "Unable to rewrite shadow database (%s).", strerror(errno));
unlink(SHADOW_COPY);
ulckpwdf();
return (NULL);
}
ulckpwdf();
return (en_passwd);
}
bool KUserFiles::loadpwd()
{
passwd *p;
KU::KUser *tmpKU = 0;
struct stat st;
QString filename;
QString passwd_filename;
QString nispasswd_filename;
int rc = 0;
int passwd_errno = 0;
int nispasswd_errno = 0;
char processing_file = '\0';
#define P_PASSWD 0x01
#define P_NISPASSWD 0x02
#define MAXFILES 2
// Read KUser configuration
passwd_filename = mCfg->passwdsrc();
nispasswd_filename = mCfg->nispasswdsrc();
// Handle unconfigured environments
if(passwd_filename.isEmpty() && nispasswd_filename.isEmpty()) {
mCfg->setPasswdsrc( PASSWORD_FILE );
mCfg->setGroupsrc( GROUP_FILE );
passwd_filename = mCfg->passwdsrc();
KMessageBox::error( 0, i18n("KUser sources were not configured.\nLocal passwd source set to %1\nLocal group source set to %2.").arg(mCfg->passwdsrc().arg(mCfg->groupsrc())) );
}
if(!passwd_filename.isEmpty()) {
processing_file = processing_file | P_PASSWD;
filename.append(passwd_filename);
}
// Start reading passwd file(s)
for(int i = 0; i < MAXFILES; i++) {
rc = stat(QFile::encodeName(filename), &st);
if(rc != 0) {
KMessageBox::error( 0, i18n("Stat call on file %1 failed: %2\nCheck KUser settings.").arg(filename).arg(QString::fromLocal8Bit(strerror(errno))) );
if( (processing_file & P_PASSWD) != 0 ) {
passwd_errno = errno;
if(!nispasswd_filename.isEmpty()) {
processing_file = processing_file & ~P_PASSWD;
processing_file = processing_file | P_NISPASSWD;
filename.truncate(0);
filename.append(nispasswd_filename);
}
continue;
}
else{
nispasswd_errno = errno;
break;
}
}
pwd_mode = st.st_mode & 0666;
pwd_uid = st.st_uid;
pwd_gid = st.st_gid;
// We are reading our configuration specified passwd file
QString tmp;
#ifdef HAVE_FGETPWENT
FILE *fpwd = fopen(QFile::encodeName(filename), "r");
if(fpwd == NULL) {
KMessageBox::error( 0, i18n("Error opening %1 for reading.").arg(filename) );
return FALSE;
}
while ((p = fgetpwent(fpwd)) != NULL) {
#else
setpwent(); //This should be enough for BSDs
while ((p = getpwent()) != NULL) {
#endif
tmpKU = new KU::KUser();
tmpKU->setCaps( KU::KUser::Cap_POSIX );
tmpKU->setUID(p->pw_uid);
tmpKU->setGID(p->pw_gid);
tmpKU->setName(QString::fromLocal8Bit(p->pw_name));
tmp = QString::fromLocal8Bit( p->pw_passwd );
if ( tmp != "x" && tmp != "*" && !tmp.startsWith("!") )
tmpKU->setDisabled( false );
else
tmpKU->setDisabled( true );
if ( tmp.startsWith("!") ) tmp.remove(0, 1);
tmpKU->setPwd( tmp );
tmpKU->setHomeDir(QString::fromLocal8Bit(p->pw_dir));
tmpKU->setShell(QString::fromLocal8Bit(p->pw_shell));
#if defined(__FreeBSD__) || defined(__bsdi__)
tmpKU->setClass(QString::fromLatin1(p->pw_class));
tmpKU->setLastChange(p->pw_change);
tmpKU->setExpire(p->pw_expire);
#endif
if ((p->pw_gecos != 0) && (p->pw_gecos[0] != 0))
fillGecos(tmpKU, p->pw_gecos);
mUsers.append(tmpKU);
}
// End reading passwd_filename
#ifdef HAVE_FGETPWENT
fclose(fpwd);
#else
endpwent();
#endif
if((!nispasswd_filename.isEmpty()) && (nispasswd_filename != passwd_filename)) {
processing_file = processing_file & ~P_PASSWD;
processing_file = processing_file | P_NISPASSWD;
filename.truncate(0);
filename.append(nispasswd_filename);
}
else
break;
} // end of processing files, for loop
if( (passwd_errno == 0) && (nispasswd_errno == 0) )
return (TRUE);
if( (passwd_errno != 0) && (nispasswd_errno != 0) )
return (FALSE);
else
return(TRUE);
}
// Load shadow passwords
bool KUserFiles::loadsdw()
{
#ifdef HAVE_SHADOW
QString shadow_file,tmp;
struct spwd *spw;
KU::KUser *up = NULL;
struct stat st;
shadow_file = mCfg->shadowsrc();
if ( shadow_file.isEmpty() )
return TRUE;
stat( QFile::encodeName(shadow_file), &st);
sdw_mode = st.st_mode & 0666;
sdw_uid = st.st_uid;
sdw_gid = st.st_gid;
#ifdef HAVE_FGETSPENT
FILE *f;
kdDebug() << "open shadow file: " << shadow_file << endl;
if ((f = fopen( QFile::encodeName(shadow_file), "r")) == NULL) {
KMessageBox::error( 0, i18n("Error opening %1 for reading.").arg(shadow_file) );
caps &= ~Cap_Shadow;
return TRUE;
}
while ((spw = fgetspent( f ))) { // read a shadow password structure
#else
setspent();
while ((spw = getspent())) { // read a shadow password structure
#endif
kdDebug() << "shadow entry: " << spw->sp_namp << endl;
if ((up = lookup(QString::fromLocal8Bit(spw->sp_namp))) == NULL) {
KMessageBox::error( 0, i18n("No /etc/passwd entry for %1.\nEntry will be removed at the next `Save'-operation.").arg(QString::fromLocal8Bit(spw->sp_namp)) );
continue;
}
tmp = QString::fromLocal8Bit( spw->sp_pwdp );
if ( tmp.startsWith("!!") || tmp == "*" ) {
up->setDisabled( true );
tmp.remove( 0, 2 );
} else
up->setDisabled( false );
up->setSPwd( tmp ); // cp the encrypted pwd
up->setLastChange( daysToTime( spw->sp_lstchg ) );
up->setMin(spw->sp_min);
up->setMax(spw->sp_max);
#ifndef _SCO_DS
up->setWarn(spw->sp_warn);
up->setInactive(spw->sp_inact);
up->setExpire( daysToTime( spw->sp_expire ) );
up->setFlag(spw->sp_flag);
#endif
}
#ifdef HAVE_FGETSPENT
fclose(f);
#else
endspent();
#endif
#endif // HAVE_SHADOW
return TRUE;
}
// Save password file
#define escstr(a,b) tmp2 = user->a(); \
tmp2.replace(':',"_"); \
tmp2.replace(',',"_"); \
user->b( tmp2 );
bool KUserFiles::savepwd()
{
FILE *passwd_fd = NULL;
FILE *nispasswd_fd = NULL;
uid_t minuid = 0;
int nis_users_written = 0;
uid_t tmp_uid = 0;
QString s;
QString s1;
QString tmp, tmp2;
QString passwd_filename;
QString nispasswd_filename;
char errors_found = '\0';
#define NOMINUID 0x01
#define NONISPASSWD 0x02
// Read KUser configuration info
passwd_filename = mCfg->passwdsrc();
nispasswd_filename = mCfg->nispasswdsrc();
QString new_passwd_filename =
passwd_filename + QString::fromLatin1(KU_CREATE_EXT);
QString new_nispasswd_filename =
nispasswd_filename+QString::fromLatin1(KU_CREATE_EXT);
if( nispasswd_filename != passwd_filename ) {
minuid = mCfg->nisminuid();
}
// Backup file(s)
if(!passwd_filename.isEmpty()) {
if (!pw_backuped) {
if (!backup(passwd_filename)) return FALSE;
pw_backuped = TRUE;
}
}
if(!nispasswd_filename.isEmpty() &&
(nispasswd_filename != passwd_filename)) {
if (!pn_backuped) {
if (!backup(nispasswd_filename)) return FALSE;
pn_backuped = TRUE;
}
}
// Open file(s)
if(!passwd_filename.isEmpty()) {
if ((passwd_fd =
fopen(QFile::encodeName(new_passwd_filename),"w")) == NULL)
KMessageBox::error( 0, i18n("Error opening %1 for writing.").arg(passwd_filename) );
}
if(!nispasswd_filename.isEmpty() && (nispasswd_filename != passwd_filename)){
if ((nispasswd_fd =
fopen(QFile::encodeName(new_nispasswd_filename),"w")) == NULL)
KMessageBox::error( 0, i18n("Error opening %1 for writing.").arg(nispasswd_filename) );
}
QPtrListIterator<KU::KUser> it( mUsers );
KU::KUser *user;
bool addok = false;
user = (*it);
while (true) {
if ( user == 0 ) {
if ( addok ) break;
it = QPtrListIterator<KU::KUser> ( mAdd );
user = (*it);
addok = true;
if ( user == 0 ) break;
};
if ( mDel.containsRef( user ) ) {
++it;
user = (*it);
continue;
}
if ( mMod.contains( user ) ) user = &( mMod[ user ] );
tmp_uid = user->getUID();
if ( caps & Cap_Shadow )
tmp = "x";
else {
tmp = user->getPwd();
if ( user->getDisabled() && tmp != "x" && tmp != "*" )
tmp = "!" + tmp;
}
escstr( getName, setName );
escstr( getHomeDir, setHomeDir );
escstr( getShell, setShell );
escstr( getName, setName );
escstr( getFullName, setFullName );
#if defined(__FreeBSD__) || defined(__bsdi__)
escstr( getClass, setClass );
escstr( getOffice, setOffice );
escstr( getWorkPhone, setWorkPhone );
escstr( getHomePhone, setHomePhone );
s =
user->getName() + ":" +
tmp + ":" +
QString::number( user->getUID() ) + ":" +
QString::number( user->getGID() ) + ":" +
user->getClass() + ":" +
QString::number( user->getLastChange() ) + ":" +
QString::number( user->getExpire() ) + ":";
s1 =
user->getFullName() + "," +
user->getOffice() + "," +
user->getWorkPhone() + "," +
user->getHomePhone();
#else
escstr( getOffice1, setOffice1 );
escstr( getOffice2, setOffice2 );
escstr( getAddress, setAddress );
s =
user->getName() + ":" +
tmp + ":" +
QString::number( user->getUID() ) + ":" +
QString::number( user->getGID() ) + ":";
s1 =
user->getFullName() + "," +
user->getOffice1() + "," +
user->getOffice2() + "," +
user->getAddress();
#endif
for (int j=(s1.length()-1); j>=0; j--) {
if (s1[j] != ',')
break;
s1.truncate(j);
}
s += s1 + ":" +
user->getHomeDir() + ":" +
user->getShell() + "\n";
if( (nispasswd_fd != 0) && (minuid != 0) ) {
if (minuid <= tmp_uid) {
fputs(s.local8Bit().data(), nispasswd_fd);
nis_users_written++;
++it;
user = (*it);
continue;
}
}
if( (nispasswd_fd != 0) && (minuid == 0) ) {
errors_found = errors_found | NOMINUID;
}
if( (nispasswd_fd == 0) && (minuid != 0) ) {
errors_found = errors_found | NONISPASSWD;
}
kdDebug() << s << endl;
fputs(s.local8Bit().data(), passwd_fd);
++it;
user = (*it);
}
if(passwd_fd) {
fclose(passwd_fd);
chmod(QFile::encodeName(new_passwd_filename), pwd_mode);
chown(QFile::encodeName(new_passwd_filename), pwd_uid, pwd_gid);
rename(QFile::encodeName(new_passwd_filename),
QFile::encodeName(passwd_filename));
}
if(nispasswd_fd) {
fclose(nispasswd_fd);
chmod(QFile::encodeName(new_nispasswd_filename), pwd_mode);
chown(QFile::encodeName(new_nispasswd_filename), pwd_uid, pwd_gid);
rename(QFile::encodeName(new_nispasswd_filename),
QFile::encodeName(nispasswd_filename));
}
if( (errors_found & NOMINUID) != 0 ) {
KMessageBox::error( 0, i18n("Unable to process NIS passwd file without a minimum UID specified.\nPlease update KUser settings (Files).") );
}
if( (errors_found & NONISPASSWD) != 0 ) {
KMessageBox::error( 0, i18n("Specifying NIS minimum UID requires NIS file(s).\nPlease update KUser settings (Files).") );
}
// need to run a utility program to build /etc/passwd, /etc/pwd.db
// and /etc/spwd.db from /etc/master.passwd
#if defined(__FreeBSD__) || defined(__bsdi__)
if (system(PWMKDB) != 0) {
KMessageBox::error( 0, i18n("Unable to build password database.") );
return FALSE;
}
#else
if( (nis_users_written > 0) || (nispasswd_filename == passwd_filename) ) {
if (system(PWMKDB) != 0) {
KMessageBox::error( 0, i18n("Unable to build password databases.") );
return FALSE;
}
}
#endif
return TRUE;
}
struct spwd *getspnam (const char *name)
{
struct spwd *sp;
#ifdef USE_NIS
char buf[BUFSIZ];
static char save_name[16];
bool nis_disabled = false;
#endif
setspent ();
#ifdef USE_NIS
/*
* Search the shadow.byname map for this user.
*/
if (!nis_ignore && !nis_bound) {
bind_nis ();
}
if (!nis_ignore && nis_bound) {
char *cp;
if (yp_match (nis_domain, "shadow.byname", name,
strlen (name), &nis_val, &nis_vallen) == 0) {
cp = strchr (nis_val, '\n');
if (NULL != cp) {
*cp = '\0';
}
nis_state = middle;
sp = my_sgetspent (nis_val);
if (NULL != sp) {
strcpy (save_name, sp->sp_namp);
nis_key = save_name;
nis_keylen = strlen (save_name);
}
endspent ();
return sp;
} else {
nis_state = native2;
}
}
#endif
#ifdef USE_NIS
/*
* NEEDSWORK -- this is a mess, and it is the same mess in the
* other three files. I can't just blindly turn off NIS because
* this might be the first pass through the local files. In
* that case, I never discover that NIS is present.
*/
if (nis_used) {
nis_ignore = true;
nis_disabled = true;
}
#endif
while ((sp = getspent ()) != (struct spwd *) 0) {
if (strcmp (name, sp->sp_namp) == 0) {
break;
}
}
#ifdef USE_NIS
if (nis_disabled) {
nis_ignore = false;
}
#endif
endspent ();
return (sp);
}