X-Git-Url: https://git.distorted.org.uk/u/mdw/putty/blobdiff_plain/f7f273099c8798f70611550bfc06b417e5c28ac7..72e2207991a533661d8096d9d46b3fc8465a34ec:/unix/uxmisc.c

diff --git a/unix/uxmisc.c b/unix/uxmisc.c
index 76401ea1..505d43d3 100644
--- a/unix/uxmisc.c
+++ b/unix/uxmisc.c
@@ -3,15 +3,100 @@
  */
 
 #include <stdio.h>
+#include <unistd.h>
 #include <sys/time.h>
+#include <sys/types.h>
+#include <pwd.h>
+
+#include "putty.h"
 
 unsigned long getticks(void)
 {
     struct timeval tv;
     gettimeofday(&tv, NULL);
     /*
-     * This will wrap around approximately every 4000 seconds, i.e.
-     * just over an hour, which is more than enough.
+     * We want to use milliseconds rather than microseconds,
+     * because we need a decent number of them to fit into a 32-bit
+     * word so it can be used for keepalives.
+     */
+    return tv.tv_sec * 1000 + tv.tv_usec / 1000;
+}
+
+Filename filename_from_str(const char *str)
+{
+    Filename ret;
+    strncpy(ret.path, str, sizeof(ret.path));
+    ret.path[sizeof(ret.path)-1] = '\0';
+    return ret;
+}
+
+const char *filename_to_str(const Filename *fn)
+{
+    return fn->path;
+}
+
+int filename_equal(Filename f1, Filename f2)
+{
+    return !strcmp(f1.path, f2.path);
+}
+
+int filename_is_null(Filename fn)
+{
+    return !*fn.path;
+}
+
+#ifdef DEBUG
+static FILE *debug_fp = NULL;
+
+void dputs(char *buf)
+{
+    if (!debug_fp) {
+	debug_fp = fopen("debug.log", "w");
+    }
+
+    write(1, buf, strlen(buf));
+
+    fputs(buf, debug_fp);
+    fflush(debug_fp);
+}
+#endif
+
+char *get_username(void)
+{
+    struct passwd *p;
+    uid_t uid = getuid();
+    char *user, *ret = NULL;
+
+    /*
+     * First, find who we think we are using getlogin. If this
+     * agrees with our uid, we'll go along with it. This should
+     * allow sharing of uids between several login names whilst
+     * coping correctly with people who have su'ed.
      */
-    return tv.tv_sec * 1000000 + tv.tv_usec;
+    user = getlogin();
+    setpwent();
+    if (user)
+	p = getpwnam(user);
+    else
+	p = NULL;
+    if (p && p->pw_uid == uid) {
+	/*
+	 * The result of getlogin() really does correspond to
+	 * our uid. Fine.
+	 */
+	ret = user;
+    } else {
+	/*
+	 * If that didn't work, for whatever reason, we'll do
+	 * the simpler version: look up our uid in the password
+	 * file and map it straight to a name.
+	 */
+	p = getpwuid(uid);
+	if (!p)
+	    return NULL;
+	ret = p->pw_name;
+    }
+    endpwent();
+
+    return dupstr(ret);
 }