From 9a972c418aa23c5081b80160d2f2cebf4fb617b6 Mon Sep 17 00:00:00 2001
From: Christoph <ckubu@oopen.de>
Date: Sun, 14 Dec 2025 13:20:03 +0100
Subject: [PATCH 5/5] Add documented patch series and build instructions

---
 README.md                                     |  80 +++-
 ...001-Fix-utime-usage-for-modern-glibc.patch | 364 ++++++++++++++++++
 ...0002-Fix-scandir-callback-signatures.patch | 204 ++++++++++
 patches/0003-Replace-gets-with-fgets.patch    |  44 +++
 ...issing-headers-for-modern-toolchains.patch |  51 +++
 5 files changed, 742 insertions(+), 1 deletion(-)
 create mode 100644 patches/0001-Fix-utime-usage-for-modern-glibc.patch
 create mode 100644 patches/0002-Fix-scandir-callback-signatures.patch
 create mode 100644 patches/0003-Replace-gets-with-fgets.patch
 create mode 100644 patches/0004-Add-missing-headers-for-modern-toolchains.patch

diff --git a/README.md b/README.md
index 8a75f5e..8c97985 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,82 @@
-# University of Washington IMAP toolkit
+## UW-IMAP 2007f – modernized build for current Linux systems
+
+This repository contains a maintained, buildable version of **UW-IMAP 2007f**
+adapted for modern Linux toolchains (glibc ≥ 2.36, GCC ≥ 11, OpenSSL ≥ 3).
+
+The original UW-IMAP source no longer builds cleanly on current distributions.
+This repository keeps the upstream code intact and applies a small, focused
+patchset to restore buildability without functional changes.
+
+---
+
+## Scope
+
+This repository provides:
+
+- Upstream UW-IMAP 2007f source
+- A minimal patchset for:
+  - `utime()` compatibility with modern glibc
+  - `scandir()` callback signature fixes
+  - Removal of deprecated `gets()`
+  - Missing standard header includes
+- A reproducible build process
+
+Not included:
+
+- Distribution packaging
+- PHP / PECL bindings
+- Kerberos support (disabled by default)
+
+---
+
+## Build dependencies (Debian 12 / 13)
+
+The following packages are required to build UW-IMAP 2007f:
+
+
+	apt install \
+	  build-essential \
+	  autoconf \
+	  automake \
+	  libtool \
+	  pkg-config \
+	  libssl-dev \
+	  libpam0g-dev \
+	  libc6-dev \
+	  libcrypt-dev \
+	  bison \
+	  flex
+
+## Notes
+
+   libc-client-dev is no longer available on modern Debian releases.
+   UW-IMAP must be built from source.
+
+   OpenSSL 3.x is supported via the included patchset.
+    Kerberos support is disabled (--without-kerberos).
+
+   Bundled tools (mtest, mlock, dmail, tmail) are built but optional.
+
+## Patches
+
+All local fixes are provided as a linear patch series:
+
+	patches/
+     0001-Fix-utime-usage-for-modern-glibc.patch
+     0002-Fix-scandir-callback-signatures.patch
+     0003-Replace-gets-with-fgets.patch
+     0004     -Add-missing-headers-for-modern-toolchains.patch
+  `
+
+## Build
+
+Example build without Kerberos:
+
+	make lnp SSLTYPE=unix.nopwd
+
+
+
+# Original README: University of Washington IMAP toolkit
 This repository is a copy of the University of Washington IMAP toolkit _(imap-2007f.tar.gz/MD5:2126fd125ea26b73b20f01fcd5940369)_ which has become unavailable from the documented FTP and mirror sites. Posted here for both posterity and because a number of packages require the library and source/headers which may not always be suitable from the OS package manager.
 
 _In my case it was to compile PHP7 with IMAP support and utilizing an alternative (newer) OpenSSL version. It was very difficult to find trustworthy already-patched sources for this purpose._ This seems to be a common problem for many in the same situation.
diff --git a/patches/0001-Fix-utime-usage-for-modern-glibc.patch b/patches/0001-Fix-utime-usage-for-modern-glibc.patch
new file mode 100644
index 0000000..a6e7825
--- /dev/null
+++ b/patches/0001-Fix-utime-usage-for-modern-glibc.patch
@@ -0,0 +1,364 @@
+From f7567c55126775c1c40ca77f77e7109de522c709 Mon Sep 17 00:00:00 2001
+From: Christoph <ckubu@oopen.de>
+Date: Sun, 14 Dec 2025 11:48:10 +0100
+Subject: [PATCH 1/4] Fix utime() usage for modern glibc
+
+---
+ src/osdep/unix/mbx.c    | 12 ++++++------
+ src/osdep/unix/mmdf.c   | 10 +++++-----
+ src/osdep/unix/mtx.c    | 16 ++++++++--------
+ src/osdep/unix/os_slx.h | 20 ++++++++++++++++++++
+ src/osdep/unix/tenex.c  | 16 ++++++++--------
+ src/osdep/unix/unix.c   | 11 ++++++-----
+ 6 files changed, 53 insertions(+), 32 deletions(-)
+
+diff --git a/src/osdep/unix/mbx.c b/src/osdep/unix/mbx.c
+index 1ece5d8..251ccfb 100644
+--- a/src/osdep/unix/mbx.c
++++ b/src/osdep/unix/mbx.c
+@@ -300,7 +300,7 @@ int mbx_isvalid (MAILSTREAM **stream,char *name,char *tmp,int *ld,char *lock,
+     if (sbuf.st_ctime > sbuf.st_atime) {
+       tp[0] = sbuf.st_atime;	/* preserve atime and mtime */
+       tp[1] = sbuf.st_mtime;
+-      utime (tmp,tp);		/* set the times */
++      set_utime_from_tp (tmp,tp);		/* set the times */
+     }
+   }
+ 				/* in case INBOX but not mbx format */
+@@ -774,7 +774,7 @@ void mbx_flag (MAILSTREAM *stream,char *sequence,char *flag,long flags)
+ 	 stream->user_flags[LOCAL->ffuserflag]) || (oldpid != LOCAL->lastpid))
+       mbx_update_header (stream);
+     tp[0] = time (0);		/* make sure read comes after all that */
+-    utime (stream->mailbox,tp);
++    set_utime_from_tp(stream->mailbox,tp);
+   }
+   if (LOCAL->ld >= 0) {		/* unlock now */
+     unlockfd (LOCAL->ld,LOCAL->lock);
+@@ -1073,7 +1073,7 @@ long mbx_copy (MAILSTREAM *stream,char *sequence,char *mailbox,long options)
+ 				/* else preserve \Marked status */
+   else tp[0] = (sbuf.st_ctime > sbuf.st_atime) ? sbuf.st_atime : time(0);
+   tp[1] = sbuf.st_mtime;	/* preserve mtime */
+-  utime (file,tp);		/* set the times */
++  set_utime_from_tp(file,tp);		/* set the times */
+   close (fd);			/* close the file */
+   MM_NOCRITICAL (stream);	/* release critical */
+   unlockfd (ld,lock);		/* release exclusive parse/append permission */
+@@ -1211,7 +1211,7 @@ long mbx_append (MAILSTREAM *stream,char *mailbox,append_t af,void *data)
+ 				/* else preserve \Marked status */
+     else tp[0] = (sbuf.st_ctime > sbuf.st_atime) ? sbuf.st_atime : time(0);
+     tp[1] = sbuf.st_mtime;	/* preserve mtime */
+-    utime (file,tp);		/* set the times */
++    set_utime_from_tp(file,tp);		/* set the times */
+     fclose (df);		/* close the file */
+     MM_NOCRITICAL (dstream);	/* release critical */
+   }
+@@ -1444,7 +1444,7 @@ long mbx_parse (MAILSTREAM *stream)
+     time_t tp[2];
+     tp[0] = time (0);
+     tp[1] = LOCAL->filetime;
+-    utime (stream->mailbox,tp);
++    set_utime_from_tp(stream->mailbox,tp);
+   }
+   stream->silent = silent;	/* can pass up events now */
+   mail_exists (stream,nmsgs);	/* notify upper level of new mailbox size */
+@@ -1812,7 +1812,7 @@ unsigned long mbx_rewrite (MAILSTREAM *stream,unsigned long *reclaimed,
+   fstat (LOCAL->fd,&sbuf);	/* get new write time */
+   tp[1] = LOCAL->filetime = sbuf.st_mtime;
+   tp[0] = time (0);		/* reset atime to now */
+-  utime (stream->mailbox,tp);
++  set_utime_from_tp(stream->mailbox,tp);
+   unlockfd (ld,lock);		/* release exclusive parse/append permission */
+ 				/* notify upper level of new mailbox size */
+   mail_exists (stream,stream->nmsgs);
+diff --git a/src/osdep/unix/mmdf.c b/src/osdep/unix/mmdf.c
+index e962434..968e306 100644
+--- a/src/osdep/unix/mmdf.c
++++ b/src/osdep/unix/mmdf.c
+@@ -379,7 +379,7 @@ long mmdf_isvalid (char *name,char *tmp)
+       if ((sbuf.st_ctime > sbuf.st_atime) || (sbuf.st_mtime > sbuf.st_atime)) {
+ 	tp[0] = sbuf.st_atime;	/* preserve atime and mtime */
+ 	tp[1] = sbuf.st_mtime;
+-	utime (file,tp);	/* set the times */
++	set_utime_from_tp(file,tp);	/* set the times */
+       }
+     }
+   }
+@@ -1131,7 +1131,7 @@ long mmdf_copy (MAILSTREAM *stream,char *sequence,char *mailbox,long options)
+   else tp[0] =			/* else preserve \Marked status */
+ 	 ((sbuf.st_ctime > sbuf.st_atime) || (sbuf.st_mtime > sbuf.st_atime)) ?
+ 	 sbuf.st_atime : tp[1];
+-  utime (file,tp);		/* set the times */
++  set_utime_from_tp(file,tp);		/* set the times */
+   mmdf_unlock (fd,NIL,&lock);	/* unlock and close mailbox */
+   if (tstream) {		/* update last UID if we can */
+     MMDFLOCAL *local = (MMDFLOCAL *) tstream->local;
+@@ -1292,7 +1292,7 @@ long mmdf_append (MAILSTREAM *stream,char *mailbox,append_t af,void *data)
+     ret = NIL;			/* return error */
+   }
+   else tp[0] = tp[1] - 1;	/* set atime to now-1 if successful copy */
+-  utime (file,tp);		/* set the times */
++  set_utime_from_tp(file,tp);		/* set the times */
+   fclose (sf);			/* done with scratch file */
+ 				/* force UIDVALIDITY assignment now */
+   if (tstream && !tstream->uid_validity) tstream->uid_validity = time (0);
+@@ -1550,7 +1550,7 @@ void mmdf_unlock (int fd,MAILSTREAM *stream,DOTLOCK *lock)
+     }
+     else now = 0;		/* no time change needed */
+ 				/* set the times, note change */
+-    if (now && !utime (stream->mailbox,tp)) LOCAL->filetime = tp[1];
++    if (now && !set_utime_from_tp(stream->mailbox,tp)) LOCAL->filetime = tp[1];
+   }
+   flock (fd,LOCK_UN);		/* release flock'ers */
+   if (!stream) close (fd);	/* close the file if no stream */
+@@ -2393,7 +2393,7 @@ long mmdf_rewrite (MAILSTREAM *stream,unsigned long *nexp,DOTLOCK *lock,
+ 				/* set atime to now, mtime a second earlier */
+     tp[1] = (tp[0] = time (0)) - 1;
+ 				/* set the times, note change */
+-    if (!utime (stream->mailbox,tp)) LOCAL->filetime = tp[1];
++    if (!set_utime_from_tp(stream->mailbox,tp)) LOCAL->filetime = tp[1];
+     close (LOCAL->fd);		/* close and reopen file */
+     if ((LOCAL->fd = open (stream->mailbox,O_RDWR,
+ 			   (long) mail_parameters (NIL,GET_MBXPROTECTION,NIL)))
+diff --git a/src/osdep/unix/mtx.c b/src/osdep/unix/mtx.c
+index 8e6f76e..b00cebf 100644
+--- a/src/osdep/unix/mtx.c
++++ b/src/osdep/unix/mtx.c
+@@ -196,7 +196,7 @@ int mtx_isvalid (char *name,char *tmp)
+       if (sbuf.st_ctime > sbuf.st_atime) {
+ 	tp[0] = sbuf.st_atime;	/* preserve atime and mtime */
+ 	tp[1] = sbuf.st_mtime;
+-	utime (file,tp);	/* set the times */
++	set_utime_from_tp(file,tp);	/* set the times */
+       }
+     }
+   }
+@@ -565,7 +565,7 @@ void mtx_flag (MAILSTREAM *stream,char *sequence,char *flag,long flags)
+     fstat (LOCAL->fd,&sbuf);	/* get current write time */
+     tp[1] = LOCAL->filetime = sbuf.st_mtime;
+     tp[0] = time (0);		/* make sure read comes after all that */
+-    utime (stream->mailbox,tp);
++    set_utime_from_tp(stream->mailbox,tp);
+   }
+ }
+ 
+@@ -834,7 +834,7 @@ long mtx_expunge (MAILSTREAM *stream,char *sequence,long options)
+       fstat (LOCAL->fd,&sbuf);	/* get new write time */
+       tp[1] = LOCAL->filetime = sbuf.st_mtime;
+       tp[0] = time (0);		/* reset atime to now */
+-      utime (stream->mailbox,tp);
++      set_utime_from_tp(stream->mailbox,tp);
+       MM_NOCRITICAL (stream);	/* release critical */
+ 				/* notify upper level of new mailbox size */
+       mail_exists (stream,stream->nmsgs);
+@@ -929,7 +929,7 @@ long mtx_copy (MAILSTREAM *stream,char *sequence,char *mailbox,long options)
+ 				/* else preserve \Marked status */
+   else tp[0] = (sbuf.st_ctime > sbuf.st_atime) ? sbuf.st_atime : time(0);
+   tp[1] = sbuf.st_mtime;	/* preserve mtime */
+-  utime (file,tp);		/* set the times */
++  set_utime_from_tp(file,tp);		/* set the times */
+   close (fd);			/* close the file */
+   unlockfd (ld,lock);		/* release exclusive parse/append permission */
+   MM_NOCRITICAL (stream);	/* release critical */
+@@ -946,7 +946,7 @@ long mtx_copy (MAILSTREAM *stream,char *sequence,char *mailbox,long options)
+       fstat (LOCAL->fd,&sbuf);	/* get current write time */
+       tp[1] = LOCAL->filetime = sbuf.st_mtime;
+       tp[0] = time (0);		/* make sure atime remains greater */
+-      utime (stream->mailbox,tp);
++      set_utime_from_tp(stream->mailbox,tp);
+     }
+   }
+   if (ret && mail_parameters (NIL,GET_COPYUID,NIL))
+@@ -1062,7 +1062,7 @@ long mtx_append (MAILSTREAM *stream,char *mailbox,append_t af,void *data)
+ 				/* else preserve \Marked status */
+   else tp[0] = (sbuf.st_ctime > sbuf.st_atime) ? sbuf.st_atime : time(0);
+   tp[1] = sbuf.st_mtime;	/* preserve mtime */
+-  utime (file,tp);		/* set the times */
++  set_utime_from_tp(file,tp);		/* set the times */
+   fclose (df);			/* close the file */
+   unlockfd (ld,lock);		/* release exclusive parse/append permission */
+   MM_NOCRITICAL (stream);	/* release critical */
+@@ -1212,7 +1212,7 @@ long mtx_parse (MAILSTREAM *stream)
+     time_t tp[2];
+     tp[0] = time (0);
+     tp[1] = LOCAL->filetime;
+-    utime (stream->mailbox,tp);
++    set_utime_from_tp(stream->mailbox,tp);
+   }
+   stream->silent = silent;	/* can pass up events now */
+   mail_exists (stream,nmsgs);	/* notify upper level of new mailbox size */
+@@ -1312,7 +1312,7 @@ void mtx_update_status (MAILSTREAM *stream,unsigned long msgno,long syncflag)
+       fstat (LOCAL->fd,&sbuf);	/* get new write time */
+       tp[1] = LOCAL->filetime = sbuf.st_mtime;
+       tp[0] = time (0);		/* make sure read is later */
+-      utime (stream->mailbox,tp);
++      set_utime_from_tp(stream->mailbox,tp);
+     }
+   }
+ }
+diff --git a/src/osdep/unix/os_slx.h b/src/osdep/unix/os_slx.h
+index b5f39ff..a316317 100644
+--- a/src/osdep/unix/os_slx.h
++++ b/src/osdep/unix/os_slx.h
+@@ -50,6 +50,26 @@
+ #include <syslog.h>
+ #include <sys/file.h>
+ 
++#include <utime.h>
++
++static inline int set_utime_from_tp (const char *path, time_t *tp)
++{
++  struct utimbuf ub;
++  ub.actime  = tp[0];
++  ub.modtime = tp[1];
++  return utime (path, &ub);
++}
++
++#ifdef __cplusplus
++extern "C" {
++#endif
++
++int safe_flock (int fd, int operation);
++
++#ifdef __cplusplus
++}
++#endif
++
+ 
+ /* Linux gets this wrong */
+ 
+diff --git a/src/osdep/unix/tenex.c b/src/osdep/unix/tenex.c
+index eee61fb..fd03c23 100644
+--- a/src/osdep/unix/tenex.c
++++ b/src/osdep/unix/tenex.c
+@@ -203,7 +203,7 @@ int tenex_isvalid (char *name,char *tmp)
+       if (sbuf.st_ctime > sbuf.st_atime) {
+ 	tp[0] = sbuf.st_atime;	/* preserve atime and mtime */
+ 	tp[1] = sbuf.st_mtime;
+-	utime (file,tp);	/* set the times */
++	set_utime_from_tp(file,tp);	/* set the times */
+       }
+     }
+   }
+@@ -654,7 +654,7 @@ void tenex_flag (MAILSTREAM *stream,char *sequence,char *flag,long flags)
+     fstat (LOCAL->fd,&sbuf);	/* get current write time */
+     tp[1] = LOCAL->filetime = sbuf.st_mtime;
+     tp[0] = time (0);		/* make sure read comes after all that */
+-    utime (stream->mailbox,tp);
++    set_utime_from_tp(stream->mailbox,tp);
+   }
+ }
+ 
+@@ -924,7 +924,7 @@ long tenex_expunge (MAILSTREAM *stream,char *sequence,long options)
+       fstat (LOCAL->fd,&sbuf);	/* get new write time */
+       tp[1] = LOCAL->filetime = sbuf.st_mtime;
+       tp[0] = time (0);		/* reset atime to now */
+-      utime (stream->mailbox,tp);
++      set_utime_from_tp(stream->mailbox,tp);
+       MM_NOCRITICAL (stream);	/* release critical */
+ 				/* notify upper level of new mailbox size */
+       mail_exists (stream,stream->nmsgs);
+@@ -1019,7 +1019,7 @@ long tenex_copy (MAILSTREAM *stream,char *sequence,char *mailbox,long options)
+ 				/* else preserve \Marked status */
+   else tp[0] = (sbuf.st_ctime > sbuf.st_atime) ? sbuf.st_atime : time(0);
+   tp[1] = sbuf.st_mtime;	/* preserve mtime */
+-  utime (file,tp);		/* set the times */
++  set_utime_from_tp(file,tp);		/* set the times */
+   close (fd);			/* close the file */
+   unlockfd (ld,lock);		/* release exclusive parse/append permission */
+   MM_NOCRITICAL (stream);	/* release critical */
+@@ -1036,7 +1036,7 @@ long tenex_copy (MAILSTREAM *stream,char *sequence,char *mailbox,long options)
+       fstat (LOCAL->fd,&sbuf);	/* get current write time */
+       tp[1] = LOCAL->filetime = sbuf.st_mtime;
+       tp[0] = time (0);		/* make sure atime remains greater */
+-      utime (stream->mailbox,tp);
++      set_utime_from_tp(stream->mailbox,tp);
+     }
+   }
+   if (ret && mail_parameters (NIL,GET_COPYUID,NIL))
+@@ -1159,7 +1159,7 @@ long tenex_append (MAILSTREAM *stream,char *mailbox,append_t af,void *data)
+ 				/* else preserve \Marked status */
+   else tp[0] = (sbuf.st_ctime > sbuf.st_atime) ? sbuf.st_atime : time(0);
+   tp[1] = sbuf.st_mtime;	/* preserve mtime */
+-  utime (file,tp);		/* set the times */
++  set_utime_from_tp(file,tp);		/* set the times */
+   fclose (df);			/* close the file */
+   unlockfd (ld,lock);		/* release exclusive parse/append permission */
+   MM_NOCRITICAL (stream);	/* release critical */
+@@ -1324,7 +1324,7 @@ long tenex_parse (MAILSTREAM *stream)
+     time_t tp[2];
+     tp[0] = time (0);
+     tp[1] = LOCAL->filetime;
+-    utime (stream->mailbox,tp);
++    set_utime_from_tp(stream->mailbox,tp);
+   }
+   stream->silent = silent;	/* can pass up events now */
+   mail_exists (stream,nmsgs);	/* notify upper level of new mailbox size */
+@@ -1424,7 +1424,7 @@ void tenex_update_status (MAILSTREAM *stream,unsigned long msgno,long syncflag)
+       fstat (LOCAL->fd,&sbuf);	/* get new write time */
+       tp[1] = LOCAL->filetime = sbuf.st_mtime;
+       tp[0] = time (0);		/* make sure read is later */
+-      utime (stream->mailbox,tp);
++      set_utime_from_tp(stream->mailbox,tp);
+     }
+   }
+ }
+diff --git a/src/osdep/unix/unix.c b/src/osdep/unix/unix.c
+index be3c437..58638d6 100644
+--- a/src/osdep/unix/unix.c
++++ b/src/osdep/unix/unix.c
+@@ -45,6 +45,7 @@ extern int errno;		/* just in case */
+ #include "mail.h"
+ #include "osdep.h"
+ #include <time.h>
++#include <utime.h>
+ #include <sys/stat.h>
+ #include "unix.h"
+ #include "pseudo.h"
+@@ -228,7 +229,7 @@ DRIVER *unix_valid (char *name)
+       if ((sbuf.st_ctime > sbuf.st_atime) || (sbuf.st_mtime > sbuf.st_atime)) {
+ 	tp[0] = sbuf.st_atime;	/* yes, preserve atime and mtime */
+ 	tp[1] = sbuf.st_mtime;
+-	utime (file,tp);	/* set the times */
++	set_utime_from_tp (file,tp);	/* set the times */
+       }
+     }
+   }
+@@ -995,7 +996,7 @@ long unix_copy (MAILSTREAM *stream,char *sequence,char *mailbox,long options)
+   else tp[0] =			/* else preserve \Marked status */
+ 	 ((sbuf.st_ctime > sbuf.st_atime) || (sbuf.st_mtime > sbuf.st_atime)) ?
+ 	 sbuf.st_atime : tp[1];
+-  utime (file,tp);		/* set the times */
++  set_utime_from_tp (file,tp);		/* set the times */
+   unix_unlock (fd,NIL,&lock);	/* unlock and close mailbox */
+   if (tstream) {		/* update last UID if we can */
+     UNIXLOCAL *local = (UNIXLOCAL *) tstream->local;
+@@ -1156,7 +1157,7 @@ long unix_append (MAILSTREAM *stream,char *mailbox,append_t af,void *data)
+     ret = NIL;			/* return error */
+   }
+   else tp[0] = tp[1] - 1;	/* set atime to now-1 if successful copy */
+-  utime (file,tp);		/* set the times */
++  set_utime_from_tp (file,tp);		/* set the times */
+   fclose (sf);			/* done with scratch file */
+ 				/* force UIDVALIDITY assignment now */
+   if (tstream && !tstream->uid_validity) tstream->uid_validity = time (0);
+@@ -1421,7 +1422,7 @@ void unix_unlock (int fd,MAILSTREAM *stream,DOTLOCK *lock)
+     }
+     else now = 0;		/* no time change needed */
+ 				/* set the times, note change */
+-    if (now && !utime (stream->mailbox,tp)) LOCAL->filetime = tp[1];
++    if (now && !set_utime_from_tp (stream->mailbox,tp)) LOCAL->filetime = tp[1];
+   }
+   flock (fd,LOCK_UN);		/* release flock'ers */
+   if (!stream) close (fd);	/* close the file if no stream */
+@@ -2247,7 +2248,7 @@ long unix_rewrite (MAILSTREAM *stream,unsigned long *nexp,DOTLOCK *lock,
+ 				/* set atime to now, mtime a second earlier */
+     tp[1] = (tp[0] = time (0)) - 1;
+ 				/* set the times, note change */
+-    if (!utime (stream->mailbox,tp)) LOCAL->filetime = tp[1];
++    if (!set_utime_from_tp (stream->mailbox,tp)) LOCAL->filetime = tp[1];
+     close (LOCAL->fd);		/* close and reopen file */
+     if ((LOCAL->fd = open (stream->mailbox,O_RDWR,
+ 			   (long) mail_parameters (NIL,GET_MBXPROTECTION,NIL)))
+-- 
+2.47.3
+
diff --git a/patches/0002-Fix-scandir-callback-signatures.patch b/patches/0002-Fix-scandir-callback-signatures.patch
new file mode 100644
index 0000000..61e4bbf
--- /dev/null
+++ b/patches/0002-Fix-scandir-callback-signatures.patch
@@ -0,0 +1,204 @@
+From a67eeb9fd268efc3f13db05810880d2249e6ccce Mon Sep 17 00:00:00 2001
+From: Christoph <ckubu@oopen.de>
+Date: Sun, 14 Dec 2025 11:48:35 +0100
+Subject: [PATCH 2/4] Fix scandir() callback signatures
+
+---
+ src/osdep/unix/mh.c   | 12 +++++++-----
+ src/osdep/unix/mix.c  | 21 +++++++++++----------
+ src/osdep/unix/mx.c   | 13 ++++++-------
+ src/osdep/unix/news.c | 14 ++++++++++----
+ 4 files changed, 34 insertions(+), 26 deletions(-)
+
+diff --git a/src/osdep/unix/mh.c b/src/osdep/unix/mh.c
+index 0226b7a..2f43774 100644
+--- a/src/osdep/unix/mh.c
++++ b/src/osdep/unix/mh.c
+@@ -103,8 +103,10 @@ long mh_copy (MAILSTREAM *stream,char *sequence,char *mailbox,
+ 	      long options);
+ long mh_append (MAILSTREAM *stream,char *mailbox,append_t af,void *data);
+ 
+-int mh_select (struct direct *name);
+-int mh_numsort (const void *d1,const void *d2);
++#include <dirent.h>
++
++int mh_select (const struct dirent *name);
++int mh_numsort (const struct dirent **d1, const struct dirent **d2);
+ char *mh_file (char *dst,char *name);
+ long mh_canonicalize (char *pattern,char *ref,char *pat);
+ void mh_setdate (char *file,MESSAGECACHE *elt);
+@@ -1194,7 +1196,7 @@ long mh_append (MAILSTREAM *stream,char *mailbox,append_t af,void *data)
+  * Returns: T to use file name, NIL to skip it
+  */
+ 
+-int mh_select (struct direct *name)
++int mh_select (const struct dirent *name)
+ {
+   char c;
+   char *s = name->d_name;
+@@ -1209,7 +1211,7 @@ int mh_select (struct direct *name)
+  * Returns: negative if d1 < d2, 0 if d1 == d2, postive if d1 > d2
+  */
+ 
+-int mh_numsort (const void *d1,const void *d2)
++int mh_numsort (const struct dirent **d1, const struct dirent **d2)
+ {
+   return atoi ((*(struct direct **) d1)->d_name) -
+     atoi ((*(struct direct **) d2)->d_name);
+@@ -1279,5 +1281,5 @@ void mh_setdate (char *file,MESSAGECACHE *elt)
+   time_t tp[2];
+   tp[0] = time (0);		/* atime is now */
+   tp[1] = mail_longdate (elt);	/* modification time */
+-  utime (file,tp);		/* set the times */
++  set_utime_from_tp(file,tp);		/* set the times */
+ }
+diff --git a/src/osdep/unix/mix.c b/src/osdep/unix/mix.c
+index fbf4a02..546ac99 100644
+--- a/src/osdep/unix/mix.c
++++ b/src/osdep/unix/mix.c
+@@ -125,7 +125,7 @@ long mix_unsubscribe (MAILSTREAM *stream,char *mailbox);
+ long mix_create (MAILSTREAM *stream,char *mailbox);
+ long mix_delete (MAILSTREAM *stream,char *mailbox);
+ long mix_rename (MAILSTREAM *stream,char *old,char *newname);
+-int mix_rselect (struct direct *name);
++int mix_rselect (const struct dirent *name);
+ MAILSTREAM *mix_open (MAILSTREAM *stream);
+ void mix_close (MAILSTREAM *stream,long options);
+ void mix_abort (MAILSTREAM *stream);
+@@ -140,8 +140,8 @@ THREADNODE *mix_thread (MAILSTREAM *stream,char *type,char *charset,
+ long mix_ping (MAILSTREAM *stream);
+ void mix_check (MAILSTREAM *stream);
+ long mix_expunge (MAILSTREAM *stream,char *sequence,long options);
+-int mix_select (struct direct *name);
+-int mix_msgfsort (const void *d1,const void *d2);
++int mix_select (const struct dirent *name);
++int mix_msgfsort (const struct dirent **d1, const struct dirent **d2);
+ long mix_addset (SEARCHSET **set,unsigned long start,unsigned long size);
+ long mix_burp (MAILSTREAM *stream,MIXBURP *burp,unsigned long *reclaimed);
+ long mix_burp_check (SEARCHSET *set,size_t size,char *file);
+@@ -587,7 +587,7 @@ long mix_rename (MAILSTREAM *stream,char *old,char *newname)
+  * Returns: T if mix file name, NIL otherwise
+  */
+ 
+-int mix_rselect (struct direct *name)
++int mix_rselect (const struct dirent *name)
+ {
+   return mix_dirfmttest (name->d_name);
+ }
+@@ -1146,7 +1146,7 @@ long mix_expunge (MAILSTREAM *stream,char *sequence,long options)
+  * ".mix" with no suffix was used by experimental versions
+  */
+ 
+-int mix_select (struct direct *name)
++int mix_select (const struct dirent *name)
+ {
+   char c,*s;
+ 				/* make sure name has prefix */
+@@ -1165,15 +1165,16 @@ int mix_select (struct direct *name)
+  * Returns: -1 if d1 < d2, 0 if d1 == d2, 1 d1 > d2
+  */
+ 
+-int mix_msgfsort (const void *d1,const void *d2)
++int mix_msgfsort (const struct dirent **d1, const struct dirent **d2)
+ {
+-  char *n1 = (*(struct direct **) d1)->d_name + sizeof (MIXNAME) - 1;
+-  char *n2 = (*(struct direct **) d2)->d_name + sizeof (MIXNAME) - 1;
+-  return compare_ulong (*n1 ? strtoul (n1,NIL,16) : 0,
+-			*n2 ? strtoul (n2,NIL,16) : 0);
++  const char *n1 = (*d1)->d_name + sizeof (MIXNAME) - 1;
++  const char *n2 = (*d2)->d_name + sizeof (MIXNAME) - 1;
++  return compare_ulong (*n1 ? strtoul (n1, NIL, 16) : 0,
++                        *n2 ? strtoul (n2, NIL, 16) : 0);
+ }
+ 
+ 
++
+ /* MIX add a range to a set
+  * Accepts: pointer to set to add
+  *	    start of set
+diff --git a/src/osdep/unix/mx.c b/src/osdep/unix/mx.c
+index 4549527..943f7da 100644
+--- a/src/osdep/unix/mx.c
++++ b/src/osdep/unix/mx.c
+@@ -98,8 +98,8 @@ long mx_append (MAILSTREAM *stream,char *mailbox,append_t af,void *data);
+ long mx_append_msg (MAILSTREAM *stream,char *flags,MESSAGECACHE *elt,
+ 		    STRING *st,SEARCHSET *set);
+ 
+-int mx_select (struct direct *name);
+-int mx_numsort (const void *d1,const void *d2);
++int mx_select (const struct dirent *name);
++int mx_numsort (const struct dirent **d1, const struct dirent **d2);
+ char *mx_file (char *dst,char *name);
+ long mx_lockindex (MAILSTREAM *stream);
+ void mx_unlockindex (MAILSTREAM *stream);
+@@ -1110,7 +1110,7 @@ long mx_append_msg (MAILSTREAM *stream,char *flags,MESSAGECACHE *elt,
+  * Returns: T to use file name, NIL to skip it
+  */
+ 
+-int mx_select (struct direct *name)
++int mx_select (const struct dirent *name)
+ {
+   char c;
+   char *s = name->d_name;
+@@ -1125,10 +1125,9 @@ int mx_select (struct direct *name)
+  * Returns: negative if d1 < d2, 0 if d1 == d2, postive if d1 > d2
+  */
+ 
+-int mx_numsort (const void *d1,const void *d2)
++int mx_numsort (const struct dirent **d1, const struct dirent **d2)
+ {
+-  return atoi ((*(struct direct **) d1)->d_name) -
+-    atoi ((*(struct direct **) d2)->d_name);
++  return atoi ((*d1)->d_name) - atoi ((*d2)->d_name);
+ }
+ 
+ 
+@@ -1283,5 +1282,5 @@ void mx_setdate (char *file,MESSAGECACHE *elt)
+   time_t tp[2];
+   tp[0] = time (0);		/* atime is now */
+   tp[1] = mail_longdate (elt);	/* modification time */
+-  utime (file,tp);		/* set the times */
++  set_utime_from_tp(file,tp);		/* set the times */
+ }
+diff --git a/src/osdep/unix/news.c b/src/osdep/unix/news.c
+index 4cf5bb7..e0dbb52 100644
+--- a/src/osdep/unix/news.c
++++ b/src/osdep/unix/news.c
+@@ -76,8 +76,12 @@ long news_create (MAILSTREAM *stream,char *mailbox);
+ long news_delete (MAILSTREAM *stream,char *mailbox);
+ long news_rename (MAILSTREAM *stream,char *old,char *newname);
+ MAILSTREAM *news_open (MAILSTREAM *stream);
+-int news_select (struct direct *name);
+-int news_numsort (const void *d1,const void *d2);
++
++#include <dirent.h>   /* falls nicht schon drin */
++
++int news_select (const struct dirent *name);
++int news_numsort (const struct dirent **d1, const struct dirent **d2);
++
+ void news_close (MAILSTREAM *stream,long options);
+ void news_fast (MAILSTREAM *stream,char *sequence,long flags);
+ void news_flags (MAILSTREAM *stream,char *sequence,long flags);
+@@ -402,7 +406,8 @@ MAILSTREAM *news_open (MAILSTREAM *stream)
+  * Returns: T to use file name, NIL to skip it
+  */
+ 
+-int news_select (struct direct *name)
++int news_select (const struct dirent *name)
++
+ {
+   char c;
+   char *s = name->d_name;
+@@ -417,7 +422,8 @@ int news_select (struct direct *name)
+  * Returns: negative if d1 < d2, 0 if d1 == d2, postive if d1 > d2
+  */
+ 
+-int news_numsort (const void *d1,const void *d2)
++int news_numsort (const struct dirent **d1, const struct dirent **d2)
++
+ {
+   return atoi ((*(struct direct **) d1)->d_name) -
+     atoi ((*(struct direct **) d2)->d_name);
+-- 
+2.47.3
+
diff --git a/patches/0003-Replace-gets-with-fgets.patch b/patches/0003-Replace-gets-with-fgets.patch
new file mode 100644
index 0000000..be6ad5e
--- /dev/null
+++ b/patches/0003-Replace-gets-with-fgets.patch
@@ -0,0 +1,44 @@
+From 789c2d97f672fd25cb0f5495892f13eda9fef440 Mon Sep 17 00:00:00 2001
+From: Christoph <ckubu@oopen.de>
+Date: Sun, 14 Dec 2025 11:49:00 +0100
+Subject: [PATCH 3/4] Replace gets() with fgets()
+
+---
+ src/mtest/mtest.c | 7 +++++--
+ 1 file changed, 5 insertions(+), 2 deletions(-)
+
+diff --git a/src/mtest/mtest.c b/src/mtest/mtest.c
+index 69af568..c15a853 100644
+--- a/src/mtest/mtest.c
++++ b/src/mtest/mtest.c
+@@ -38,6 +38,7 @@
+ #include <signal.h>
+ #include "c-client.h"
+ #include "imap4r1.h"
++#include <string.h>
+ 
+ /* Excellent reasons to hate ifdefs, and why my real code never uses them */
+ 
+@@ -595,7 +596,8 @@ void status (MAILSTREAM *stream)
+ void prompt (char *msg,char *txt)
+ {
+   printf ("%s",msg);
+-  gets (txt);
++  if (!fgets (txt, sizeof (txt), stdin)) txt[0] = '\0';
++  txt[strcspn (txt, "\r\n")] = '\0';
+ }
+ 
+ /* Interfaces to C-client */
+@@ -779,7 +781,8 @@ void smtptest (long debug)
+   puts (" Msg (end with a line with only a '.'):");
+   body->type = TYPETEXT;
+   *text = '\0';
+-  while (gets (line)) {
++  while (fgets (line, sizeof (line), stdin)) {
++    line[strcspn (line, "\r\n")] = '\0';
+     if (line[0] == '.') {
+       if (line[1] == '\0') break;
+       else strcat (text,".");
+-- 
+2.47.3
+
diff --git a/patches/0004-Add-missing-headers-for-modern-toolchains.patch b/patches/0004-Add-missing-headers-for-modern-toolchains.patch
new file mode 100644
index 0000000..cc6f71e
--- /dev/null
+++ b/patches/0004-Add-missing-headers-for-modern-toolchains.patch
@@ -0,0 +1,51 @@
+From 8f89723b4f32c3ce70dbb3f99f1c176e4492692d Mon Sep 17 00:00:00 2001
+From: Christoph <ckubu@oopen.de>
+Date: Sun, 14 Dec 2025 11:49:29 +0100
+Subject: [PATCH 4/4] Add missing headers for modern toolchains
+
+---
+ src/dmail/dmail.c | 1 +
+ src/mlock/mlock.c | 2 ++
+ src/tmail/tmail.c | 1 +
+ 3 files changed, 4 insertions(+)
+
+diff --git a/src/dmail/dmail.c b/src/dmail/dmail.c
+index f78b957..b569c16 100644
+--- a/src/dmail/dmail.c
++++ b/src/dmail/dmail.c
+@@ -35,6 +35,7 @@ extern int errno;		/* just in case */
+ #include <sys/stat.h>
+ #include "c-client.h"
+ #include "dquota.h"
++#include <ctype.h>
+ 
+ 
+ /* Globals */
+diff --git a/src/mlock/mlock.c b/src/mlock/mlock.c
+index 1dca40e..95f3729 100644
+--- a/src/mlock/mlock.c
++++ b/src/mlock/mlock.c
+@@ -40,6 +40,8 @@
+ #include <netdb.h>
+ #include <ctype.h>
+ #include <string.h>
++#include <unistd.h>   /* write, read, close, link, unlink, chdir, sleep, getpid, gethostname */
++#include <time.h>     /* time */
+ 
+ #define LOCKTIMEOUT 5		/* lock timeout in minutes */
+ #define LOCKPROTECTION 0664
+diff --git a/src/tmail/tmail.c b/src/tmail/tmail.c
+index ed5fc58..95ecbd2 100644
+--- a/src/tmail/tmail.c
++++ b/src/tmail/tmail.c
+@@ -35,6 +35,7 @@ extern int errno;		/* just in case */
+ #include <sys/stat.h>
+ #include "c-client.h"
+ #include "tquota.h"
++#include <ctype.h>
+ 
+ 
+ /* Globals */
+-- 
+2.47.3
+
-- 
2.47.3

