net/net: Convert parse_host_port() to Error

Cc: berrange@redhat.com
Cc: kraxel@redhat.com
Cc: pbonzini@redhat.com
Cc: jasowang@redhat.com
Cc: armbru@redhat.com
Cc: eblake@redhat.com
Signed-off-by: Mao Zhongyi <maozy.fnst@cn.fujitsu.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

1 files changed, 17 insertions, 5 deletions

diff --git a/net/net.c b/net/net.c
index 2fa99c0497..bebb042b74 100644
--- a/net/net.c
+++ b/net/net.c
@@ -100,7 +100,8 @@ static int get_str_sep(char *buf, int buf_size, const char **pp, int sep)
     return 0;
 }
 
-int parse_host_port(struct sockaddr_in *saddr, const char *str)
+int parse_host_port(struct sockaddr_in *saddr, const char *str,
+                    Error **errp)
 {
     char buf[512];
     struct hostent *he;
@@ -108,24 +109,35 @@ int parse_host_port(struct sockaddr_in *saddr, const char *str)
     int port;
 
     p = str;
-    if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
+    if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
+        error_setg(errp, "host address '%s' doesn't contain ':' "
+                   "separating host from port", str);
         return -1;
+    }
     saddr->sin_family = AF_INET;
     if (buf[0] == '\0') {
         saddr->sin_addr.s_addr = 0;
     } else {
         if (qemu_isdigit(buf[0])) {
-            if (!inet_aton(buf, &saddr->sin_addr))
+            if (!inet_aton(buf, &saddr->sin_addr)) {
+                error_setg(errp, "host address '%s' is not a valid "
+                           "IPv4 address", buf);
                 return -1;
+            }
         } else {
-            if ((he = gethostbyname(buf)) == NULL)
+            he = gethostbyname(buf);
+            if (he == NULL) {
+                error_setg(errp, "can't resolve host address '%s'", buf);
                 return - 1;
+            }
             saddr->sin_addr = *(struct in_addr *)he->h_addr;
         }
     }
     port = strtol(p, (char **)&r, 0);
-    if (r == p)
+    if (r == p) {
+        error_setg(errp, "port number '%s' is invalid", p);
         return -1;
+    }
     saddr->sin_port = htons(port);
     return 0;
 }