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66 lines
1.9 KiB
C
66 lines
1.9 KiB
C
/*
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* This is an *example* plugin which prints information of a message after it is
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* received by the broker and before it is sent on to other clients.
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*
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* Compile with:
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* gcc -I<path to mosquitto-repo/include> -fPIC -shared printf_example.c -o printf_example.so
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*
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* Use in config with:
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*
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* plugin /path/to/printf_example.so
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*
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* Note that this only works on Mosquitto 2.0 or later.
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*/
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#include <stdio.h>
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#include <string.h>
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#include "mosquitto_broker.h"
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#include "mosquitto_plugin.h"
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#include "mosquitto.h"
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#include "mqtt_protocol.h"
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#define PLUGIN_NAME "client-properties"
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#define PLUGIN_VERSION "1.0"
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#define UNUSED(A) (void)(A)
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MOSQUITTO_PLUGIN_DECLARE_VERSION(5);
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static mosquitto_plugin_id_t *mosq_pid = NULL;
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static int callback_message(int event, void *event_data, void *userdata)
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{
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struct mosquitto_evt_message *ed = event_data;
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UNUSED(event);
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UNUSED(userdata);
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printf("printf-example - client address: %s\n", mosquitto_client_address(ed->client));
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printf("printf-example - client id: %s\n", mosquitto_client_id(ed->client));
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printf("printf-example - client username: %s\n", mosquitto_client_username(ed->client));
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printf("printf-example - payload: '%.*s'\n", ed->payloadlen, (char *)ed->payload);
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return MOSQ_ERR_SUCCESS;
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}
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int mosquitto_plugin_init(mosquitto_plugin_id_t *identifier, void **user_data, struct mosquitto_opt *opts, int opt_count)
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{
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UNUSED(user_data);
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UNUSED(opts);
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UNUSED(opt_count);
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mosq_pid = identifier;
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mosquitto_plugin_set_info(identifier, PLUGIN_NAME, PLUGIN_VERSION);
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return mosquitto_callback_register(mosq_pid, MOSQ_EVT_MESSAGE_WRITE, callback_message, NULL, NULL);
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}
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/* mosquitto_plugin_cleanup() is optional in 2.1 and later. Use it only if you have your own cleanup to do */
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int mosquitto_plugin_cleanup(void *user_data, struct mosquitto_opt *opts, int opt_count)
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{
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UNUSED(user_data);
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UNUSED(opts);
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UNUSED(opt_count);
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return MOSQ_ERR_SUCCESS;
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}
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