X-Git-Url: http://git.meshlink.io/?a=blobdiff_plain;f=avahi-common%2Futil.c;h=a977bb2a04f144666b71735d72a5edc9d254e572;hb=1c9effb5f570b2f46720d626d56b650dd0ce7a35;hp=baf552796d9fcdd4bfdfe93877af1c8862fc9833;hpb=9962a048634c590db23a00db1d01daada779844c;p=catta

diff --git a/avahi-common/util.c b/avahi-common/util.c
index baf5527..a977bb2 100644
--- a/avahi-common/util.c
+++ b/avahi-common/util.c
@@ -84,13 +84,12 @@ gchar *avahi_normalize_name(const gchar *s) {
 
     unescape_uneeded(s, tmp, sizeof(tmp));
 
-    if ((l = strlen(tmp)) == 0)
-        return g_strdup(".");
+    l = strlen(tmp);
 
-    if (tmp[l-1] == '.')
-        return g_strdup(tmp);
+    while (l > 0 && tmp[l-1] == '.')
+        tmp[--l] = 0;
 
-    return g_strdup_printf("%s.", tmp);
+    return g_strdup(tmp);
 }
 
 gint avahi_timeval_compare(const GTimeVal *a, const GTimeVal *b) {
@@ -112,16 +111,56 @@ gint avahi_timeval_compare(const GTimeVal *a, const GTimeVal *b) {
     return 0;
 }
 
-glong avahi_timeval_diff(const GTimeVal *a, const GTimeVal *b) {
+AvahiUsec avahi_timeval_diff(const GTimeVal *a, const GTimeVal *b) {
     g_assert(a);
     g_assert(b);
 
     if (avahi_timeval_compare(a, b) < 0)
-        return avahi_timeval_diff(b, a);
+        return - avahi_timeval_diff(b, a);
 
-    return ((glong) a->tv_sec - b->tv_sec)*1000000 + a->tv_usec - b->tv_usec;
+    return ((AvahiUsec) a->tv_sec - b->tv_sec)*1000000 + a->tv_usec - b->tv_usec;
 }
 
+GTimeVal* avahi_timeval_add(GTimeVal *a, AvahiUsec usec) {
+    AvahiUsec u;
+    g_assert(a);
+
+    u = usec + a->tv_usec;
+
+    if (u < 0) {
+        a->tv_usec = (glong) (1000000 + (u % 1000000));
+        a->tv_sec += (glong) (-1 + (u / 1000000));
+    } else {
+        a->tv_usec = (glong) (u % 1000000);
+        a->tv_sec += (glong) (u / 1000000);
+    }
+
+    return a;
+}
+
+AvahiUsec avahi_age(const GTimeVal *a) {
+    GTimeVal now;
+    
+    g_assert(a);
+
+    g_get_current_time(&now);
+
+    return avahi_timeval_diff(&now, a);
+}
+
+GTimeVal *avahi_elapse_time(GTimeVal *tv, guint msec, guint jitter) {
+    g_assert(tv);
+
+    g_get_current_time(tv);
+
+    if (msec)
+        avahi_timeval_add(tv, (AvahiUsec) msec*1000);
+
+    if (jitter)
+        avahi_timeval_add(tv, (AvahiUsec) g_random_int_range(0, jitter) * 1000);
+        
+    return tv;
+}
 
 gint avahi_set_cloexec(gint fd) {
     gint n;
@@ -169,30 +208,6 @@ gint avahi_wait_for_write(gint fd) {
     return 0;
 }
 
-GTimeVal *avahi_elapse_time(GTimeVal *tv, guint msec, guint jitter) {
-    g_assert(tv);
-
-    g_get_current_time(tv);
-
-    if (msec)
-        g_time_val_add(tv, msec*1000);
-
-    if (jitter)
-        g_time_val_add(tv, g_random_int_range(0, jitter) * 1000);
-        
-    return tv;
-}
-
-glong avahi_age(const GTimeVal *a) {
-    GTimeVal now;
-    
-    g_assert(a);
-
-    g_get_current_time(&now);
-
-    return avahi_timeval_diff(&now, a);
-}
-
 /* Read the first label from string *name, unescape "\" and write it to dest */
 gchar *avahi_unescape_label(const gchar **name, gchar *dest, guint size) {
     guint i = 0;
@@ -399,3 +414,97 @@ gchar *avahi_format_mac_address(const guint8* mac, guint size) {
     *(--t) = 0;
     return r;
 }
+
+gboolean avahi_valid_service_type(const gchar *t) {
+    const gchar *p;
+    g_assert(t);
+
+    if (strlen(t) < 5)
+        return FALSE;
+    
+    if (*t != '_')
+        return FALSE;
+
+    if (!(p = strchr(t, '.')))
+        return FALSE;
+
+    if (p - t > 63 || p - t < 2)
+        return FALSE;
+
+    if (*(++p) != '_')
+        return FALSE;
+
+    if (strchr(p, '.'))
+        return FALSE;
+
+    if (strlen(p) > 63 || strlen(p) < 2)
+        return FALSE;
+    
+    return TRUE;
+}
+
+gboolean avahi_valid_domain_name(const gchar *t) {
+    const gchar *p, *dp;
+    gboolean dot = FALSE;
+        
+    g_assert(t);
+
+    if (*t == 0)
+        return FALSE;
+
+    /* Domains may not start with a dot */
+    if (*t == '.')
+        return FALSE;
+
+    dp = t; 
+
+    for (p = t; *p; p++) {
+
+        if (*p == '.') {
+            if (dot) /* Two subsequent dots */
+                return FALSE;
+
+            if (p - dp > 63)
+                return FALSE;
+
+            dot = TRUE;
+            dp = p + 1;
+        } else
+            dot = FALSE;
+
+    }
+
+    if (p - dp > 63)
+        return FALSE;
+
+    /* A trailing dot IS allowed */
+    
+    return TRUE;
+}
+
+gboolean avahi_valid_service_name(const gchar *t) {
+    g_assert(t);
+
+    if (*t == 0)
+        return FALSE;
+
+    if (strlen(t) > 63)
+        return FALSE;
+
+    return TRUE;
+}
+
+gboolean avahi_valid_host_name(const gchar *t) {
+    g_assert(t);
+
+    if (*t == 0)
+        return FALSE;
+
+    if (strlen(t) > 63)
+        return FALSE;
+
+    if (strchr(t, '.'))
+        return FALSE;
+
+    return TRUE;
+}