handling of ENV_RRDCACHED_ADDRESS:

[rrdtool.git] / src / rrd_client.c

diff --git a/src/rrd_client.c b/src/rrd_client.c
index 471e046fa42f3ae09849cc35c6539f7eab243e52..11c1e3357b08d18ea35140469ff82dcda53afd85 100644 (file)
--- a/src/rrd_client.c
+++ b/src/rrd_client.c
@@ -73,30 +73,31 @@ static const char *get_path (const char *path, char *resolved_path) /* {{{ */
   const char *ret = path;
   int is_unix = 0;
 
+  if ((path == NULL) || (resolved_path == NULL) || (sd_path == NULL))
+    return (NULL);
+
   if ((*sd_path == '/')
       || (strncmp ("unix:", sd_path, strlen ("unix:")) == 0))
     is_unix = 1;
 
-  if (*path == '/') /* absolute path */
+  if (is_unix)
   {
-    if (! is_unix)
-    {
-      rrd_set_error ("absolute path names not allowed when talking "
-          "to a remote daemon");
-      return (NULL);
-    }
-    /* else: nothing to do */
+    ret = realpath(path, resolved_path);
+    if (ret == NULL)
+      rrd_set_error("realpath(%s): %s", path, rrd_strerror(errno));
+    return ret;
   }
-  else /* relative path */
+  else
   {
-    if (is_unix)
+    if (*path == '/') /* not absolute path */
     {
-      realpath (path, resolved_path);
-      ret = resolved_path;
+      rrd_set_error ("absolute path names not allowed when talking "
+          "to a remote daemon");
+      return NULL;
     }
-    /* else: nothing to do */
   }
-  return (ret);
+
+  return path;
 } /* }}} char *get_path */
 
 /* One must hold `lock' when calling `close_connection'. */
@@ -227,34 +228,36 @@ static void response_free (rrdc_response_t *res) /* {{{ */
 
 static int response_read (rrdc_response_t **ret_response) /* {{{ */
 {
-  rrdc_response_t *ret;
+  rrdc_response_t *ret = NULL;
+  int status = 0;
 
   char buffer[4096];
   char *buffer_ptr;
 
   size_t i;
 
+#define DIE(code) do { status = code; goto err_out; } while(0)
+
   if (sh == NULL)
-    return (-1);
+    DIE(-1);
 
   ret = (rrdc_response_t *) malloc (sizeof (rrdc_response_t));
   if (ret == NULL)
-    return (-2);
+    DIE(-2);
   memset (ret, 0, sizeof (*ret));
   ret->lines = NULL;
   ret->lines_num = 0;
 
   buffer_ptr = fgets (buffer, sizeof (buffer), sh);
   if (buffer_ptr == NULL)
-    return (-3);
+    DIE(-3);
+
   chomp (buffer);
 
   ret->status = strtol (buffer, &ret->message, 0);
   if (buffer == ret->message)
-  {
-    response_free (ret);
-    return (-4);
-  }
+    DIE(-4);
+
   /* Skip leading whitespace of the status message */
   ret->message += strspn (ret->message, " \t");
 
@@ -262,16 +265,13 @@ static int response_read (rrdc_response_t **ret_response) /* {{{ */
   {
     if (ret->status < 0)
       rrd_set_error("rrdcached: %s", ret->message);
-    *ret_response = ret;
-    return (0);
+    goto out;
   }
 
   ret->lines = (char **) malloc (sizeof (char *) * ret->status);
   if (ret->lines == NULL)
-  {
-    response_free (ret);
-    return (-5);
-  }
+    DIE(-5);
+
   memset (ret->lines, 0, sizeof (char *) * ret->status);
   ret->lines_num = (size_t) ret->status;
 
@@ -279,22 +279,27 @@ static int response_read (rrdc_response_t **ret_response) /* {{{ */
   {
     buffer_ptr = fgets (buffer, sizeof (buffer), sh);
     if (buffer_ptr == NULL)
-    {
-      response_free (ret);
-      return (-6);
-    }
+      DIE(-6);
+
     chomp (buffer);
 
     ret->lines[i] = strdup (buffer);
     if (ret->lines[i] == NULL)
-    {
-      response_free (ret);
-      return (-7);
-    }
+      DIE(-7);
   }
 
+out:
   *ret_response = ret;
-  return (0);
+  fflush(sh);
+  return (status);
+
+err_out:
+  response_free(ret);
+  close_connection();
+  return (status);
+
+#undef DIE
+
 } /* }}} rrdc_response_t *response_read */
 
 static int request (const char *buffer, size_t buffer_size, /* {{{ */
@@ -497,6 +502,8 @@ static int rrdc_connect_network (const char *addr_orig) /* {{{ */
     break;
   } /* for (ai_ptr) */
 
+  freeaddrinfo(ai_res);
+
   return (status);
 } /* }}} int rrdc_connect_network */
 
@@ -504,11 +511,14 @@ int rrdc_connect (const char *addr) /* {{{ */
 {
   int status = 0;
 
-  if (addr == NULL)
+  if (addr == NULL) {
     addr = getenv (ENV_RRDCACHED_ADDRESS);
+  }
 
-  if (addr == NULL)
-    return 0;
+  if (addr == NULL || ! strcmp(addr,"") ) {
+    addr = NULL;
+    return 0;   
+  }
 
   pthread_mutex_lock(&lock);