/src/mosquitto/lib/handle_unsuback.c
Line | Count | Source |
1 | | /* |
2 | | Copyright (c) 2009-2021 Roger Light <roger@atchoo.org> |
3 | | |
4 | | All rights reserved. This program and the accompanying materials |
5 | | are made available under the terms of the Eclipse Public License 2.0 |
6 | | and Eclipse Distribution License v1.0 which accompany this distribution. |
7 | | |
8 | | The Eclipse Public License is available at |
9 | | https://www.eclipse.org/legal/epl-2.0/ |
10 | | and the Eclipse Distribution License is available at |
11 | | http://www.eclipse.org/org/documents/edl-v10.php. |
12 | | |
13 | | SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause |
14 | | |
15 | | Contributors: |
16 | | Roger Light - initial implementation and documentation. |
17 | | */ |
18 | | |
19 | | #include "config.h" |
20 | | |
21 | | #include <assert.h> |
22 | | #include <stdio.h> |
23 | | #include <string.h> |
24 | | |
25 | | #ifdef WITH_BROKER |
26 | | # include "mosquitto_broker_internal.h" |
27 | | #endif |
28 | | |
29 | | #include "callbacks.h" |
30 | | #include "mosquitto.h" |
31 | | #include "logging_mosq.h" |
32 | | #include "messages_mosq.h" |
33 | | #include "mosquitto/mqtt_protocol.h" |
34 | | #include "net_mosq.h" |
35 | | #include "packet_mosq.h" |
36 | | #include "property_mosq.h" |
37 | | #include "read_handle.h" |
38 | | #include "send_mosq.h" |
39 | | #include "util_mosq.h" |
40 | | |
41 | | |
42 | | int handle__unsuback(struct mosquitto *mosq) |
43 | 31 | { |
44 | 31 | uint16_t mid; |
45 | 31 | int rc; |
46 | 31 | mosquitto_property *properties = NULL; |
47 | 31 | int *reason_codes = NULL; |
48 | 31 | int reason_code_count = 0; |
49 | | |
50 | 31 | assert(mosq); |
51 | | |
52 | 31 | if(mosquitto__get_state(mosq) != mosq_cs_active){ |
53 | 0 | return MOSQ_ERR_PROTOCOL; |
54 | 0 | } |
55 | 31 | if(mosq->in_packet.command != CMD_UNSUBACK){ |
56 | 0 | return MOSQ_ERR_MALFORMED_PACKET; |
57 | 0 | } |
58 | | |
59 | 31 | #ifdef WITH_BROKER |
60 | 31 | if(mosq->bridge == NULL){ |
61 | | /* Client is not a bridge, so shouldn't be sending SUBACK */ |
62 | 0 | return MOSQ_ERR_PROTOCOL; |
63 | 0 | } |
64 | 31 | log__printf(NULL, MOSQ_LOG_DEBUG, "Received UNSUBACK from %s", SAFE_PRINT(mosq->id)); |
65 | | #else |
66 | | log__printf(mosq, MOSQ_LOG_DEBUG, "Client %s received UNSUBACK", SAFE_PRINT(mosq->id)); |
67 | | #endif |
68 | 31 | rc = packet__read_uint16(&mosq->in_packet, &mid); |
69 | 31 | if(rc){ |
70 | 0 | return rc; |
71 | 0 | } |
72 | 31 | if(mid == 0){ |
73 | 1 | return MOSQ_ERR_PROTOCOL; |
74 | 1 | } |
75 | | |
76 | 30 | if(mosq->protocol == mosq_p_mqtt5){ |
77 | 30 | rc = property__read_all(CMD_UNSUBACK, &mosq->in_packet, &properties); |
78 | 30 | if(rc){ |
79 | 2 | return rc; |
80 | 2 | } |
81 | | |
82 | 28 | uint8_t byte; |
83 | 28 | reason_code_count = (int)(mosq->in_packet.remaining_length - mosq->in_packet.pos); |
84 | 28 | reason_codes = mosquitto_malloc((size_t)reason_code_count*sizeof(int)); |
85 | 28 | if(!reason_codes){ |
86 | 0 | mosquitto_property_free_all(&properties); |
87 | 0 | return MOSQ_ERR_NOMEM; |
88 | 0 | } |
89 | 2.15M | for(int i=0; i<reason_code_count; i++){ |
90 | 2.15M | rc = packet__read_byte(&mosq->in_packet, &byte); |
91 | 2.15M | if(rc){ |
92 | 0 | mosquitto_FREE(reason_codes); |
93 | 0 | mosquitto_property_free_all(&properties); |
94 | 0 | return rc; |
95 | 0 | } |
96 | 2.15M | reason_codes[i] = (int)byte; |
97 | 2.15M | } |
98 | 28 | } |
99 | | |
100 | | #ifndef WITH_BROKER |
101 | | callback__on_unsubscribe(mosq, mid, reason_code_count, reason_codes, properties); |
102 | | #endif |
103 | 28 | mosquitto_property_free_all(&properties); |
104 | 28 | mosquitto_FREE(reason_codes); |
105 | | |
106 | 28 | return MOSQ_ERR_SUCCESS; |
107 | 30 | } |