[PATCH 5.6.1] OS2 getpw*, getgr*

Date: Thu, 21 Jun 2001 06:23:56 -0400
Message-ID: <20010621062356.A8619@math.ohio-state.edu>

Subject: Re: [PATCH 5.6.1] OS2 getpw*, getgr*
From: Ilya Zakharevich <ilya@math.ohio-state.edu>
Date: Thu, 21 Jun 2001 06:32:21 -0400
Message-ID: <20010621063221.A8823@math.ohio-state.edu>

p4raw-id: //depot/perl@10768

2 files changed, 139 insertions, 0 deletions

diff --git a/os2/os2.c b/os2/os2.c
index a2b196e3eb..582311a3a8 100644
--- a/os2/os2.c
+++ b/os2/os2.c
@@ -21,6 +21,8 @@
 #include <limits.h>
 #include <process.h>
 #include <fcntl.h>
+#include <pwd.h>
+#include <grp.h>
 
 #define PERLIO_NOT_STDIO 0
 
@@ -2414,3 +2416,108 @@ my_flock(int handle, int o)
   errno = 0;
   return 0;
 }
+
+static int pwent_cnt;
+static int _my_pwent = -1;
+
+static int
+use_my_pwent(void)
+{
+  if (_my_pwent == -1) {
+    char *s = getenv("USE_PERL_PWENT");
+    if (s)
+	_my_pwent = atoi(s);
+    else 
+	_my_pwent = 1;
+  }
+  return _my_pwent;
+}
+
+#undef setpwent
+#undef getpwent
+#undef endpwent
+
+void
+my_setpwent(void)
+{
+  if (!use_my_pwent()) {
+    setpwent();			/* Delegate to EMX. */
+    return;
+  }
+  pwent_cnt = 0;
+}
+
+void
+my_endpwent(void)
+{
+  if (!use_my_pwent()) {
+    endpwent();			/* Delegate to EMX. */
+    return;
+  }
+}
+
+struct passwd *
+my_getpwent (void)
+{
+  if (!use_my_pwent())
+    return getpwent();			/* Delegate to EMX. */
+  if (pwent_cnt++)
+    return 0;				// Return one entry only
+  return getpwuid(0);
+}
+
+static int grent_cnt;
+
+void
+setgrent(void)
+{
+  grent_cnt = 0;
+}
+
+void
+endgrent(void)
+{
+}
+
+struct group *
+getgrent (void)
+{
+  if (grent_cnt++)
+    return 0;				// Return one entry only
+  return getgrgid(0);
+}
+
+#undef getpwuid
+#undef getpwnam
+
+/* Too long to be a crypt() of anything, so it is not-a-valid pw_passwd. */
+static const char pw_p[] = "Jf0Wb/BzMFvk7K7lrzK";
+
+static struct passwd *
+passw_wrap(struct passwd *p)
+{
+    static struct passwd pw;
+    char *s;
+
+    if (!p || (p->pw_passwd && *p->pw_passwd)) /* Not a dangerous password */
+	return p;
+    pw = *p;
+    s = getenv("PW_PASSWD");
+    if (!s)
+	s = (char*)pw_p;		/* Make match impossible */
+
+    pw.pw_passwd = s;
+    return &pw;    
+}
+
+struct passwd *
+my_getpwuid (uid_t id)
+{
+    return passw_wrap(getpwuid(id));
+}
+
+struct passwd *
+my_getpwnam (__const__ char *n)
+{
+    return passw_wrap(getpwnam(n));
+}
diff --git a/os2/os2ish.h b/os2/os2ish.h
index 30e67ca071..e6e8b5faef 100644
--- a/os2/os2ish.h
+++ b/os2/os2ish.h
@@ -17,6 +17,23 @@
 #define HAS_DLERROR
 #define HAS_WAITPID_RUNTIME (_emx_env & 0x200)
 
+/* HAS_PASSWD
+ *	This symbol, if defined, indicates that the getpwnam() and
+ *	getpwuid() routines are available to get password entries.
+ *	The getpwent() has a separate definition, HAS_GETPWENT.
+ */
+#define HAS_PASSWD
+
+/* HAS_GROUP
+ *	This symbol, if defined, indicates that the getgrnam() and
+ *	getgrgid() routines are available to get group entries.
+ *	The getgrent() has a separate definition, HAS_GETGRENT.
+ */
+#define HAS_GROUP
+#define HAS_GETGRENT			/* fake */
+#define HAS_SETGRENT			/* fake */
+#define HAS_ENDGRENT			/* fake */
+
 /* USEMYBINMODE
  *	This symbol, if defined, indicates that the program should
  *	use the routine my_binmode(FILE *fp, char iotype, int mode) to insure
@@ -263,6 +280,16 @@ FILE *my_tmpfile (void);
 char *my_tmpnam (char *);
 int my_mkdir (__const__ char *, long);
 int my_rmdir (__const__ char *);
+struct passwd *my_getpwent (void);
+void my_setpwent (void);
+void my_endpwent (void);
+
+struct group *getgrent (void);
+void setgrent (void);
+void endgrent (void);
+
+struct passwd *my_getpwuid (uid_t);
+struct passwd *my_getpwnam (__const__ char *);
 
 #undef L_tmpnam
 #define L_tmpnam MAXPATHLEN
@@ -287,6 +314,11 @@ int my_rmdir (__const__ char *);
 #define flock	my_flock
 #define rmdir	my_rmdir
 #define mkdir	my_mkdir
+#define setpwent	my_setpwent
+#define getpwent	my_getpwent
+#define endpwent	my_endpwent
+#define getpwuid	my_getpwuid
+#define getpwnam	my_getpwnam
 
 void *emx_calloc (size_t, size_t);
 void emx_free (void *);