From c14bd833b7b1b3b1283d116a87b6f293377f129b Mon Sep 17 00:00:00 2001
From: Radek Novacek <rnovacek@redhat.com>
Date: Mon, 8 Apr 2013 11:09:53 +0200
Subject: Support for using libopenlmicommon by external providers

* add FindOpenLMI.cmake module
* add pkgconfig for OpenLMI
* add openlmi.c/h with exported functions
* add symlink with major version to openlmicommon library

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=948948
---
 src/openlmi.c | 139 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 139 insertions(+)
 create mode 100644 src/openlmi.c

(limited to 'src/openlmi.c')

diff --git a/src/openlmi.c b/src/openlmi.c
new file mode 100644
index 0000000..786bdd2
--- /dev/null
+++ b/src/openlmi.c
@@ -0,0 +1,139 @@
+/*
+ * Copyright (C) 2012-2013 Red Hat, Inc.  All rights reserved.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Authors: Radek Novacek <rnovacek@redhat.com>
+ */
+
+#include "openlmi.h"
+
+#include <stdlib.h>
+#include <stdarg.h>
+#include <unistd.h>
+#include <sys/utsname.h>
+#include <string.h>
+#include <netdb.h>
+#include <stdio.h>
+#include <cmpimacs.h>
+
+static char *_fqdn = NULL;
+static int _log_level = _LMI_DEBUG_DEBUG;
+static const CMPIBroker *_cb = NULL;
+static char *_log_id = NULL;
+
+static char *getFQDN(void)
+{
+    struct utsname uts;
+    if ((uname(&uts) > 0) && (uts.nodename != NULL)) {
+        return strdup(uts.nodename);
+    }
+    char hostname[256];
+    hostname[255] = '\0';
+    if (gethostname(hostname, 255) == -1) {
+        // FIXME: what to do, if we can't use gethostname?
+        return NULL;
+    }
+
+    struct addrinfo hints;
+    struct addrinfo *info = NULL, *p;
+    memset(&hints, 0, sizeof hints);
+    hints.ai_family = AF_UNSPEC; // either IPV4 or IPV6
+    hints.ai_socktype = SOCK_STREAM;
+    hints.ai_flags = AI_CANONNAME;
+
+    if (getaddrinfo(hostname, "http", &hints, &info) == 0) {
+        for (p = info; p != NULL; p = p->ai_next) {
+            if (p->ai_canonname && strstr(p->ai_canonname, "localhost") == NULL) {
+                char *dn = strdup(p->ai_canonname);
+                freeaddrinfo(info);
+                return dn;
+            }
+        }
+    }
+    if (info != NULL) {
+        freeaddrinfo(info);
+    }
+    return strdup(hostname);
+}
+
+const char *lmi_get_system_name()
+{
+    if (_fqdn == NULL) {
+        _fqdn = getFQDN();
+    }
+    return _fqdn;
+}
+
+const char *lmi_get_system_creation_class_name()
+{
+    return "Linux_ComputerSystem";
+}
+
+void lmi_init_logging(const char *log_id, const CMPIBroker *cb)
+{
+    if (_log_id != NULL) {
+        free(_log_id);
+    }
+    _log_id = strdup(log_id);
+    _cb = cb;
+}
+
+int lmi_log_level(void)
+{
+    return _log_level;
+}
+
+void lmi_set_log_level(int level)
+{
+    _log_level = level;
+}
+
+void _lmi_debug(int level, const char *file, int line, const char *format, ...)
+{
+    const char *lvl[] = { "NONE", "ERROR", "INFO", "WARNING", "DEBUG" };
+    if (level > 4) {
+        level = 4;
+    }
+    if (level < 1) {
+        level = 1;
+    }
+
+    char *message, *text;
+    va_list args;
+    va_start(args, format);
+    vasprintf(&message, format, args);
+    va_end(args);
+    asprintf(&text, "[%s] %s:%d\t%s", lvl[level], file, line, message);
+    free(message);
+
+    CMPIStatus rc;
+    rc.rc = CMPI_RC_OK;
+    if (_cb != NULL) {
+        // try to use standard CMPI logging
+        rc = _cb->eft->trace(_cb, CMPI_LEV_INFO, _log_id, text, NULL);
+    }
+
+    if (_cb == NULL || rc.rc != CMPI_RC_OK) {
+        // Fallback to stderr
+        if (level > _log_level) {
+            free(text);
+            return;
+        }
+
+        fprintf(stderr, "%s\n", text);
+    }
+    free(text);
+}
-- 
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