1 files changed, 96 insertions, 0 deletions
diff --git a/tools/pub.c b/tools/pub.c
new file mode 100644
index 0000000..9b5af82
--- /dev/null
+++ b/tools/pub.c
@@ -0,0 +1,96 @@
+#include <stdlib.h>
+#include <stdio.h>
+
+#include "mqtt.h"
+#include "getopt.h"
+
+struct options
+{
+    int qos;
+    int retain;
+    const char *topic;
+    const char *message;
+};
+
+void onConnect(MqttClient *client, MqttConnectionStatus status,
+               int sessionPresent)
+{
+    struct options *options = (struct options *) MqttClientGetUserData(client);
+    (void) client;
+    printf("onConnect rv=%d sessionPresent=%d\n", status, sessionPresent);
+    MqttClientPublishCString(client, options->qos, options->retain,
+        options->topic, options->message);
+    if (options->qos == 0)
+        MqttClientDisconnect(client);
+}
+
+void onPublish(MqttClient *client, int id)
+{
+    printf("onPublish id=%d\n", id);
+    MqttClientDisconnect(client);
+}
+
+void usage(const char *prog)
+{
+    fprintf(stderr, "%s [--qos QOS] [--retain] [--topic TOPIC] [--message MESSAGE]\n",
+        prog);
+    exit(1);
+}
+
+int main(int argc, char **argv)
+{
+    MqttClient *client;
+    const char *opt;
+    struct options options;
+
+    options.qos = 0;
+    options.retain = 0;
+    options.topic = "my/topic";
+    options.message = "hello, world!";
+
+    while ((opt = GETOPT(argc, argv)) != NULL)
+    {
+        GETOPT_SWITCH(opt)
+        {
+            GETOPT_OPTARG("--qos"):
+                options.qos = strtol(optarg, NULL, 10);
+                if (options.qos < 0 || options.qos > 2)
+                {
+                    fprintf(stderr, "invalid qos: %s\n", optarg);
+                    return 1;
+                }
+                break;
+
+            GETOPT_OPT("--retain"):
+                options.retain = 1;
+                break;
+
+            GETOPT_OPTARG("--topic"):
+                options.topic = optarg;
+                break;
+
+            GETOPT_OPTARG("--message"):
+                options.message = optarg;
+                break;
+
+            GETOPT_MISSING_ARG:
+                fprintf(stderr, "missing argument to: %s\n", opt);
+
+            GETOPT_DEFAULT:
+                usage(argv[0]);
+                break;
+        }
+    }
+
+    client = MqttClientNew(NULL, 1);
+
+    MqttClientSetOnConnect(client, onConnect);
+    MqttClientSetOnPublish(client, onPublish);
+    MqttClientSetUserData(client, &options);
+
+    MqttClientConnect(client, "test.mosquitto.org", 1883, 60);
+
+    MqttClientRun(client);
+
+    return 0;
+}