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589d79d1ed
freebsd-ports/mail/popper/files/patch-aa
Paul Traina a32537ed35 Fix random memory overwrite bug
1996-09-30 19:19:23 +00:00

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*** make.44bsd Wed May 29 17:37:44 1996
--- make.44bsd Sat Jun 8 15:18:11 1996
***************
*** 3,10 ****
# Defines are described in the INSTALL document.
! PROG=popper popauth
! MAN8=popper.8 popauth.8
SRCS= pop_dele.c pop_dropcopy.c pop_get_command.c pop_get_subcommand.c \
pop_init.c pop_last.c pop_list.c pop_log.c pop_lower.c pop_msg.c \
pop_parse.c pop_pass.c pop_quit.c pop_rset.c pop_send.c pop_stat.c \
--- 3,12 ----
# Defines are described in the INSTALL document.
! SUBDIR=popauth
!
! PROG=popper
! MAN8=popper.8
SRCS= pop_dele.c pop_dropcopy.c pop_get_command.c pop_get_subcommand.c \
pop_init.c pop_last.c pop_list.c pop_log.c pop_lower.c pop_msg.c \
pop_parse.c pop_pass.c pop_quit.c pop_rset.c pop_send.c pop_stat.c \
***************
*** 12,32 ****
xtnd_xlst.c pop_uidl.c pop_rpop.c pop_apop.c md5.c
#SRCS+= flock.c mktemp.c
! BINDIR=/usr/local/libexec
! MANDIR=/usr/local/man/man
#LDADD+= -lcrypt -lndbm
! CFLAGS+=-DHAVE_PARAM_H
# if you want APOP support, uncomment the next line
! #CFLAGS+=-DAPOP=\"/etc/pop.auth\" -DPOPUID=\"pop\"
# if you want RPOP support, uncomment the next line
! #CFLAGS+=-DRPOP
# if you want to block POP access for anyone in /etc/ftpusers, uncomment
! #CFLAGS+=-DNONAUTHFILE=\"/etc/ftpusers\"
.include <bsd.prog.mk>
-
--- 14,40 ----
xtnd_xlst.c pop_uidl.c pop_rpop.c pop_apop.c md5.c
#SRCS+= flock.c mktemp.c
! BINDIR=${PREFIX}/libexec
! MANDIR=${PREFIX}/man/man
#LDADD+= -lcrypt -lndbm
! CFLAGS+=-DHAVE_PARAM_H -DSETPROCTITLE
! LDADD+=-lutil
!
! .if exists(/usr/lib/libskey.a) && exists(/usr/lib/libmd.a)
! DPADD+= ${LIBSKEY} ${LIBMD} ${LIBCRYPT}
! LDADD+= -lskey -lmd -lcrypt
! CFLAGS+= -DSKEY
! .endif
# if you want APOP support, uncomment the next line
! CFLAGS+=-DAPOP=\"${PREFIX}/etc/popper/pop.auth\" -DPOPUID=\"pop\"
# if you want RPOP support, uncomment the next line
! # CFLAGS+=-DRPOP
# if you want to block POP access for anyone in /etc/ftpusers, uncomment
! CFLAGS+=-DNONAUTHFILE=\"/etc/ftpusers\"
.include <bsd.prog.mk>
*** pop_dropcopy.c Sat Jun 8 14:44:01 1996
--- pop_dropcopy.c Sat Jun 8 14:50:46 1996
***************
*** 755,760 ****
--- 755,761 ----
the SERVER maildrop */
FILE *tf; /* The temp file */
int tfn;
+ char template[POP_TMPSIZE]; /* Temp name holder */
char buffer[MAXLINELEN]; /* Read buffer */
long offset; /* Old/New boundary */
int nchar; /* Bytes written/read */
***************
*** 788,793 ****
--- 789,805 ----
}
#endif
+ /* First create a unique file. Would prefer mkstemp, but Ultrix...*/
+ strcpy(template,POP_TMPDROP);
+ if (((tfn=mkstemp(template)) == -1) ||
+ ((tf=fdopen(tfn, "w+")) == NULL)) { /* failure, bail out */
+ pop_log(p,POP_PRIORITY,
+ "Unable to create temporary temporary maildrop '%s': %s",template,
+ (errno < sys_nerr) ? sys_errlist[errno] : "") ;
+ return pop_msg(p,POP_FAILURE,
+ "System error, can't create temporary file.");
+ }
+
/* Here we work to make sure the user doesn't cause us to remove or
* write over existing files by limiting how much work we do while
* running as root.
***************
*** 801,806 ****
--- 813,831 ----
pwp->pw_gid = mybuf.st_gid;
# endif
#endif
+
+ /* Now give this file to the user */
+ (void) chown(template, (UID_T)pwp->pw_uid, (GID_T)pwp->pw_gid);
+ /* (void) chmod(template,0600); umask now handles this */
+
+ /* Now link this file to the temporary maildrop. If this fails it
+ * is probably because the temporary maildrop already exists. If so,
+ * this is ok. We can just go on our way, because by the time we try
+ * to write into the file we will be running as the user.
+ */
+ (void) link(template,p->temp_drop);
+ (void) fclose(tf);
+ (void) unlink(template);
/* Now we run as the user. */
(void) setgid((GID_T)pwp->pw_gid);
*** pop_pass.c Fri May 24 11:26:25 1996
--- pop_pass.c Tue Jun 4 11:09:56 1996
***************
*** 482,497 ****
POP * p;
struct passwd * pw;
{
/* We don't accept connections from users with null passwords */
! /* Compare the supplied password with the password file entry */
! if ((pw->pw_passwd == NULL) || (*pw->pw_passwd == '\0') ||
! strcmp(crypt(p->pop_parm[1], pw->pw_passwd), pw->pw_passwd)) {
! sleep(SLEEP_SECONDS);
! return (pop_msg(p,POP_FAILURE, pwerrmsg, p->user));
! }
return(POP_SUCCESS);
}
#endif /* AUTH */
--- 482,516 ----
POP * p;
struct passwd * pw;
{
+ #if defined(BSD) && (BSD >= 199306)
+ /* Check password change and expire times before granting access */
+ time_t now = time((time_t *) NULL);
+
+ if ((pw->pw_change && now > pw->pw_change) ||
+ (pw->pw_expire && now > pw->pw_expire))
+ goto error;
+ #endif
+
/* We don't accept connections from users with null passwords */
! if ((pw->pw_passwd == NULL) || (*pw->pw_passwd == '\0'))
! goto error;
! /* Compare the supplied password with the password file entry */
! #ifdef SKEY
! if (strcmp(skey_crypt(p->pop_parm[1], pw->pw_passwd, pw,
! skeyaccess(p->user, NULL, p->client, p->ipaddr)),
! pw->pw_passwd))
! goto error;
! #else
! if (strcmp(crypt(p->pop_parm[1], pw->pw_passwd)))
! goto error;
! #endif
return(POP_SUCCESS);
+
+ error:
+ sleep(SLEEP_SECONDS);
+ return (pop_msg(p,POP_FAILURE, pwerrmsg, p->user));
}
#endif /* AUTH */
*** pop_user.c Fri May 24 11:26:47 1996
--- pop_user.c Tue Jun 4 11:08:42 1996
***************
*** 117,122 ****
--- 117,134 ----
}
#endif /* APOP */
+ #ifdef SKEY
+ {
+ static char buf[128];
+ struct skey skey;
+
+ if (!skeychallenge(&skey, p->user, buf))
+ return(pop_msg(p,POP_SUCCESS,"%s%s", buf,
+ skeyaccess(p->user, NULL, p->client, p->ipaddr) ?
+ "" : " required"));
+ }
+ #endif
+
/* Tell the user that the password is required */
return (pop_msg(p,POP_SUCCESS,"Password required for %s.",p->user));
}
*** popper.h Wed May 22 11:26:25 1996
--- popper.h Sat Jun 8 14:55:56 1996
***************
*** 35,40 ****
--- 35,43 ----
# define HAVE_VSPRINTF
# define BIND43
# endif
+ # if (defined(BSD) && (BSD >= 199306))
+ # define BSD44_DBM
+ # endif
#endif
#ifdef BSDI
***************
*** 110,116 ****
# define POP_MAILDIR "/var/mail"
# define POP_DROP "/var/mail/.%s.pop"
# define POP_TMPDROP "/var/mail/tmpXXXXXX"
! # define POP_TMPXMIT "/var/mail/xmitXXXXXX"
# define MAIL_COMMAND "/usr/sbin/sendmail"
# define OSDONE
#endif
--- 113,119 ----
# define POP_MAILDIR "/var/mail"
# define POP_DROP "/var/mail/.%s.pop"
# define POP_TMPDROP "/var/mail/tmpXXXXXX"
! # define POP_TMPXMIT "/var/tmp/xmitXXXXXX"
# define MAIL_COMMAND "/usr/sbin/sendmail"
# define OSDONE
#endif
***************
*** 337,342 ****
--- 340,348 ----
extern AUTH_DAT kdata;
#endif /* KERBEROS */
+ #if defined(SKEY)
+ #include <skey.h>
+ #endif
#if defined(AUTHFILE)
extern int checkauthfile();
#endif
*** popauth.c Sun Jun 9 12:56:38 1996
--- popauth.c Sun Jun 9 13:00:51 1996
***************
*** 36,43 ****
#include <sys/file.h>
#endif
! #ifdef BSDI
! #define BSD44_DBM
#endif
#ifdef NEED_STRERROR
--- 36,51 ----
#include <sys/file.h>
#endif
! #ifdef HAVE_PARAM_H
! #include <sys/param.h>
! # if (defined(BSD) && (BSD >= 199103))
! # define HAVE_UNISTD_H
! # define HAVE_VSPRINTF
! # define BIND43
! # endif
! # if (defined(BSD) && (BSD >= 199306))
! # define BSD44_DBM
! # endif
#endif
#ifdef NEED_STRERROR
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