Add utmpx support in ktalk

[taken from FreeBSD kdenetwork3 patches]

Signed-off-by: Slávek Banko <slavek.banko@axis.cz>
(cherry picked from commit 509a3cfb67)

ktalkd/ktalkd/find_user.cpp

@@ -339,6 +339,66 @@ int find_user(char *name, char *tty, char *disp) {
 
 #else  /*not PROC_FIND_USER*/
 
+#ifdef HAVE_UTMPX_H
+
+int find_user(char *name, char *tty, char *disp) {
+
+    struct utmpx *ubuf;
+    int status;
+    struct stat statb;
+    char ftty[20 + sizeof ubuf->ut_line];
+    char ttyFound[sizeof ubuf->ut_line] = "";
+    char dispFound[sizeof ubuf->ut_line + 1] = "";
+
+    setutxent();
+#define SCMPN(a, b)	strncmp(a, b, sizeof (a))
+    status = NOT_HERE;
+    (void) strcpy(ftty, _PATH_DEV);
+    while ((ubuf = getutxent())) {
+        if ((ubuf->ut_type == USER_PROCESS) &&
+            (!SCMPN(ubuf->ut_user, name))) {
+            if (*tty == '\0') {
+                /* no particular tty was requested */
+                (void) strcpy(ftty+5, ubuf->ut_line);
+                if (stat(ftty,&statb) == 0) {
+                    if (!(statb.st_mode & 020)) /* ?character device? */
+                        continue;
+                    (void) strcpy(ttyFound, ubuf->ut_line);
+#ifdef USE_UT_HOST
+                    (void) strcpy(dispFound, ubuf->ut_host);
+                    strcat(dispFound, " ");
+#endif
+                    status = SUCCESS;
+
+                    syslog(LOG_DEBUG, "%s", ttyFound);
+                    if ((int) ttyFound[3] > (int) 'f') {
+#ifdef USE_UT_HOST
+                        if (Options.debug_mode) {
+                            syslog(LOG_DEBUG, "I wanna this:%s", ttyFound);
+                            syslog(LOG_DEBUG, "ut_host=%s", ubuf.ut_host);
+                            syslog(LOG_DEBUG, "%s", ubuf.ut_line);
+                        }
+#endif
+                        break;
+                    }
+                }
+            }
+	    else if (!strcmp(ubuf->ut_line, tty)) {
+                status = SUCCESS;
+                break;
+            }
+        }
+    }
+    endutxent();
+    if (status == SUCCESS) {
+        (void) strcpy(tty, ttyFound);
+        (void) strcpy(disp, dispFound);
+    }
+    return (status);
+}
+
+#else /* HAVE_UTMPX_H */
+
 int find_user(char *name, char *tty, char *disp) {
 
     struct utmp ubuf;
@@ -397,4 +457,7 @@ int find_user(char *name, char *tty, char *disp) {
     }
     return (status);
 }
+
+#endif /* HAVE_UTMPX_H */
+
 #endif /*PROC_FIND_USER*/

ktalkd/ktalkd/includ.h

@@ -58,6 +58,9 @@
 #ifdef HAVE_UTMP_H
 #include <utmp.h>
 #endif
+#ifdef HAVE_UTMPX_H
+#include <utmpx.h>
+#endif
 #ifndef UT_LINESIZE
 #define UT_LINESIZE 12
 #endif