File procmail-o_nofollow.patch of Package procmail

---
 src/exopen.c |    4 ++--
 src/robust.c |   14 +++++++++++++-
 2 files changed, 15 insertions(+), 3 deletions(-)

--- src/exopen.c
+++ src/exopen.c	2025-02-12 09:33:08.114189510 +0000
@@ -110,7 +110,7 @@ in:	if(flags&doMAILDIR)
 #define ropen(path,type,mode)	creat(path,mode)
 #endif
   while((!i||errno!=ENOENT||	      /* casually check if it already exists */
-	 (0>(i=ropen(full,O_WRONLY|O_CREAT|O_EXCL,mode))&&errno==EEXIST))&&
+	 (0>(i=ropen(full,O_WRONLY|O_CREAT|O_EXCL|O_NOFOLLOW,mode))&&errno==EEXIST))&&
 	(i= -1,retry--));
   if(flags&doCHOWN&&didnice)
      nice(nicediff);		   /* put back the priority to the old level */
@@ -180,7 +180,7 @@ int hlink(old,newn)const char*const old,
    { int fd;
 #ifdef O_CREAT				       /* failure due to filesystem? */
      if(stbuf.st_nlink<2&&errno==EXDEV&&     /* try it by conventional means */
-	0<=(fd=ropen(newn,O_WRONLY|O_CREAT|O_EXCL,stbuf.st_mode)))
+	0<=(fd=ropen(newn,O_WRONLY|O_CREAT|O_EXCL|O_NOFOLLOW,stbuf.st_mode)))
 	return fd+1;
 #endif
      return -1;
--- src/robust.c
+++ src/robust.c	2025-02-12 10:06:32.165135534 +0000
@@ -10,6 +10,7 @@
 static /*const*/char rcsid[]=
  "$Id$";
 #endif
+#include <libgen.h>
 #include "procmail.h"
 #include "robust.h"
 #include "misc.h"
@@ -121,7 +122,18 @@ void opnlog(file)const char*file;
 int opena(a)const char*const a;
 { yell("Opening",a);
 #ifdef O_CREAT
-  return ropen(a,O_WRONLY|O_APPEND|O_CREAT,NORMperm);
+  int flags = O_WRONLY|O_APPEND|O_CREAT;
+  struct stat stbuf;
+  char *d, *t = tstrdup(a);
+  d = dirname(t);
+  if (stat(d,&stbuf) < 0) {
+      free(t);
+      return -1;
+  }
+  free(t);
+  if (stbuf.st_mode & S_IWOTH)
+      flags |= O_NOFOLLOW;
+  return ropen(a,flags,NORMperm);
 #else
   ;{ int fd;
      return (fd=ropen(a,O_WRONLY,0))<0?creat(a,NORMperm):fd;