1 files changed, 98 insertions, 0 deletions
diff --git a/common/elapi/elapi_basic.c b/common/elapi/elapi_basic.c
new file mode 100644
index 000000000..8c7ddb7d5
--- /dev/null
+++ b/common/elapi/elapi_basic.c
@@ -0,0 +1,98 @@
+/*
+    ELAPI
+
+    Basic output buffer manipulation routines.
+
+    Copyright (C) Dmitri Pal <dpal@redhat.com> 2009
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 3 of the License, or
+    (at your option) any later version.
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+
+#define _GNU_SOURCE
+#include <errno.h>      /* for errors */
+#include <stdlib.h>     /* for free() */
+
+#include "elapi_basic.h"
+#include "trace.h"
+#include "config.h"
+
+/* Function to free serialized data */
+void elapi_free_serialized_data(struct elapi_data_out *out_data)
+{
+    TRACE_FLOW_STRING("elapi_free_serialized_data", "Entry");
+
+    if (out_data) {
+        free(out_data->buffer);
+        free(out_data);
+    }
+
+    TRACE_FLOW_STRING("elapi_free_serialized_data", "Exit");
+}
+
+/* Allocate data structure */
+int elapi_alloc_serialized_data(struct elapi_data_out **out_data)
+{
+    int error;
+
+    TRACE_FLOW_STRING("elapi_alloc_serialized_data", "Entry");
+
+    if (!out_data) {
+        TRACE_ERROR_STRING("Invalid argument", "");
+        error = EINVAL;
+    }
+    else {
+        *out_data = (struct elapi_data_out *)calloc(1,
+                                             sizeof(struct elapi_data_out));
+        if (*out_data == NULL) {
+            TRACE_ERROR_STRING("Failed to allocate memory", "");
+            error = ENOMEM;
+        }
+        else error = EOK;
+    }
+
+    TRACE_FLOW_NUMBER("elapi_alloc_serialized_data. Exit. Returning", error);
+    return error;
+}
+
+
+/* Grow buffer */
+int elapi_grow_data(struct elapi_data_out *out_data,
+                    uint32_t len,
+                    uint32_t block)
+{
+    int error = EOK;
+    unsigned char *newbuf = NULL;
+
+    TRACE_FLOW_STRING("elapi_grow_data", "Entry");
+
+    TRACE_INFO_NUMBER("Current length: ", out_data->length);
+    TRACE_INFO_NUMBER("Current size: ", out_data->size);
+    TRACE_INFO_NUMBER("Length to have: ", len);
+    TRACE_INFO_NUMBER("Increment length: ", block);
+
+    /* Grow buffer if needed */
+    while (out_data->length + len >= out_data->size) {
+        newbuf = realloc(out_data->buffer, out_data->size + block);
+        if (newbuf == NULL) {
+            TRACE_ERROR_NUMBER("Error. Failed to allocate memory.", ENOMEM);
+            return ENOMEM;
+        }
+        out_data->buffer = newbuf;
+        out_data->size += block;
+        TRACE_INFO_NUMBER("New size: ", out_data->size);
+    }
+
+    TRACE_INFO_NUMBER("Final size: ", out_data->size);
+    TRACE_FLOW_NUMBER("elapi_grow_data. Exit. Returning", error);
+    return error;
+}