Annotation of mqtt/src/daemon.c, revision 1.1.2.19
1.1.2.1 misho 1: #include "global.h"
1.1.2.16 misho 2: #include "rtlm.h"
1.1.2.11 misho 3: #include "mqttd.h"
1.1.2.1 misho 4:
5:
1.1.2.14 misho 6: static inline struct tagSession *
1.1.2.18 misho 7: initSession(int sock, ait_val_t * __restrict v)
1.1.2.14 misho 8: {
9: struct tagSession *sess = NULL;
10: const char *str;
11:
1.1.2.15 misho 12: FTRACE(5);
13:
1.1.2.18 misho 14: if (!v)
1.1.2.14 misho 15: return NULL;
16:
17: sess = malloc(sizeof(struct tagSession));
18: if (!sess) {
19: VERB(3) syslog(LOG_ERR, "Error:: in malloc #%d - %s", errno, strerror(errno));
1.1.2.18 misho 20: io_freeVar(v);
1.1.2.14 misho 21: return NULL;
22: } else
23: memset(sess, 0, sizeof(struct tagSession));
24:
1.1.2.17 misho 25: str = (const char*) cfg_GetAttribute(&cfg, CFG("mqttd"), CFG("retry"));
1.1.2.14 misho 26: if (!str)
27: sess->sess_retry = DEFAULT_RETRY;
28: else
29: sess->sess_retry = strtol(str, NULL, 0);
30:
31: sess->sess_buf = mqtt_msgAlloc(0);
32: if (!sess->sess_buf) {
33: VERB(3) syslog(LOG_ERR, "Error:: in msgAlloc #%d - %s", mqtt_GetErrno(), mqtt_GetError());
34: free(sess);
1.1.2.18 misho 35: io_freeVar(v);
1.1.2.14 misho 36: return NULL;
37: }
38:
1.1.2.15 misho 39: sess->sess_sock = sock;
1.1.2.19! misho 40: strlcpy(sess->sess_addr, (char*) AIT_GET_STR(v), sizeof sess->sess_addr);
1.1.2.18 misho 41: io_freeVar(v);
1.1.2.14 misho 42: return sess;
43: }
44:
45: static void
46: finiSession(struct tagSession *sess)
47: {
48: register int i;
49: struct tagStore *store;
50:
1.1.2.15 misho 51: FTRACE(5);
52:
1.1.2.14 misho 53: if (!sess)
54: return;
55:
56: for (i = 0; i < MQTT_QOS_RESERVED; i++)
57: while ((store = SLIST_FIRST(&sess->sess_store[i]))) {
58: SLIST_REMOVE_HEAD(&sess->sess_store[i], st_node);
59: free(store);
60: }
61:
62: if (sess->sess_will.msg)
63: free(sess->sess_will.msg);
64: if (sess->sess_will.topic)
65: free(sess->sess_will.topic);
66:
67: if (sess->sess_sock > STDERR_FILENO) {
68: shutdown(sess->sess_sock, SHUT_RDWR);
69: close(sess->sess_sock);
70: }
71:
72: mqtt_msgFree(&sess->sess_buf, 42);
73:
74: free(sess);
75: }
76:
1.1.2.5 misho 77: static void *
1.1.2.15 misho 78: thrSession(struct tagSession *sess)
79: {
1.1.2.18 misho 80: void thrClean(struct tagSession *sess)
81: {
82: pthread_mutex_lock(&mtx_sess);
83: TAILQ_REMOVE(&Sessions, sess, sess_node);
84: pthread_mutex_unlock(&mtx_sess);
85: VERB(1) syslog(LOG_DEBUG, "Close socket=%d", sess->sess_sock);
86: finiSession(sess);
87: }
88:
89: pthread_cleanup_push((void(*)(void*)) thrClean, sess);
90:
1.1.2.15 misho 91: FTRACE(2);
92:
1.1.2.18 misho 93: pthread_cleanup_pop(42);
1.1.2.15 misho 94: pthread_exit(NULL);
95: }
96:
97: static void *
1.1.2.5 misho 98: startSession(sched_task_t *task)
1.1.2.4 misho 99: {
1.1.2.11 misho 100: u_char basebuf[USHRT_MAX];
1.1.2.18 misho 101: mqtt_msg_t msg = { NULL, 0 }, buf = { basebuf, sizeof basebuf };
1.1.2.10 misho 102: mqtthdr_connflgs_t flg;
1.1.2.13 misho 103: mqtthdr_connack_t cack;
1.1.2.12 misho 104: struct tagSession *sess = NULL;
1.1.2.18 misho 105: int ret;
106: pthread_attr_t attr;
1.1.2.6 misho 107:
108: FTRACE(4);
109:
1.1.2.14 misho 110: sess = initSession(TASK_FD(task), TASK_ARG(task));
1.1.2.15 misho 111: if (!sess) {
1.1.2.18 misho 112: io_freeVar(TASK_ARG(task));
1.1.2.15 misho 113: close(TASK_FD(task));
1.1.2.14 misho 114: return NULL;
1.1.2.15 misho 115: }
1.1.2.6 misho 116:
1.1.2.18 misho 117: /* receive & decode packet */
1.1.2.14 misho 118: if (recv(sess->sess_sock, buf.msg_base, buf.msg_len, 0) == -1) {
119: VERB(3) syslog(LOG_ERR, "Error:: recv(%d) #%d - %s", sess->sess_sock, errno, strerror(errno));
1.1.2.18 misho 120: finiSession(sess);
121: return NULL;
1.1.2.9 misho 122: }
1.1.2.14 misho 123: cack = mqtt_readCONNECT(&buf, &sess->sess_ka, sess->sess_cid, sizeof sess->sess_cid,
1.1.2.12 misho 124: sess->sess_user, sizeof sess->sess_user, sess->sess_pass, sizeof sess->sess_pass,
1.1.2.13 misho 125: &sess->sess_will.topic, &sess->sess_will.msg);
1.1.2.18 misho 126: ret = cack.retcode;
1.1.2.14 misho 127: flg.flags = cack.reserved;
128: if (flg.reserved) {
1.1.2.13 misho 129: VERB(3) syslog(LOG_ERR, "Error:: in MQTT protocol #%d - %s", mqtt_GetErrno(), mqtt_GetError());
1.1.2.10 misho 130: goto end;
1.1.2.14 misho 131: } else {
132: sess->sess_clean = flg.clean_sess;
133: sess->sess_will.qos = flg.will_qos;
134: sess->sess_will.retain = flg.will_retain;
135: sess->sess_will.flag = flg.will_flg;
1.1.2.12 misho 136: }
1.1.2.6 misho 137:
1.1.2.8 misho 138: /* check online table for user */
1.1.2.18 misho 139: if (call.LoginACC(&cfg, acc, sess->sess_user, sess->sess_pass) < 1) {
1.1.2.16 misho 140: VERB(1) syslog(LOG_WARNING, "Login:: DENIED for username %s and password %s",
141: sess->sess_user, sess->sess_pass);
142: goto end;
143: } else
144: VERB(1) syslog(LOG_WARNING, "Login:: ALLOWED for username %s ...", sess->sess_user);
1.1.2.6 misho 145:
1.1.2.18 misho 146: ret = mqtt_msgCONNACK(&msg, ret);
147: if ((ret = send(sess->sess_sock, msg.msg_base, ret, 0)) == -1) {
148: VERB(3) syslog(LOG_ERR, "Error:: send(%d) #%d - %s", sess->sess_sock, errno, strerror(errno));
149: finiSession(sess);
150: return NULL;
151: } else {
152: VERB(5) ioLOGGER(LOG_DEBUG, "Sended %d bytes", ret);
1.1.2.19! misho 153: free(msg.msg_base);
! 154: msg.msg_len = 0;
1.1.2.18 misho 155: }
156:
1.1.2.15 misho 157: /* Start session thread OK ... */
1.1.2.18 misho 158: pthread_attr_init(&attr);
159: pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
160:
161: pthread_mutex_lock(&mtx_sess);
1.1.2.15 misho 162: TAILQ_INSERT_TAIL(&Sessions, sess, sess_node);
1.1.2.18 misho 163: pthread_create(&sess->sess_tid, &attr, (void*(*)(void*)) thrSession, sess);
164: pthread_mutex_unlock(&mtx_sess);
165:
166: VERB(1) ioLOGGER(LOG_DEBUG, "ConnID=%s(%s) for %s login OK!",
1.1.2.15 misho 167: sess->sess_cid, sess->sess_user, sess->sess_addr);
1.1.2.18 misho 168:
169: pthread_attr_destroy(&attr);
1.1.2.15 misho 170: return NULL;
1.1.2.6 misho 171: end: /* close client connection */
1.1.2.18 misho 172: ret = mqtt_msgCONNACK(&msg, ret);
173: if ((ret = send(sess->sess_sock, msg.msg_base, ret, 0)) == -1) {
174: VERB(3) syslog(LOG_ERR, "Error:: send(%d) #%d - %s", sess->sess_sock, errno, strerror(errno));
175: } else {
176: VERB(5) ioLOGGER(LOG_DEBUG, "Sended %d bytes", ret);
1.1.2.19! misho 177: free(msg.msg_base);
! 178: msg.msg_len = 0;
1.1.2.18 misho 179: }
180:
181: VERB(1) ioLOGGER(LOG_DEBUG, "Close client %s with socket=%d", sess->sess_addr, sess->sess_sock);
1.1.2.15 misho 182: finiSession(sess);
1.1.2.6 misho 183: return NULL;
1.1.2.4 misho 184: }
185:
186: /* ----------------------------------------------------------------------- */
187:
1.1.2.5 misho 188: static void *
189: thrSched(void *arg __unused)
190: {
191: FTRACE(1);
1.1.2.18 misho 192: struct tagSession *sess;
1.1.2.5 misho 193:
194: schedRun(root, (intptr_t*) &Kill);
1.1.2.18 misho 195:
196: TAILQ_FOREACH(sess, &Sessions, sess_node)
197: if (sess->sess_tid)
198: pthread_cancel(sess->sess_tid);
1.1.2.5 misho 199: pthread_exit(NULL);
200: }
201:
1.1.2.2 misho 202: int
1.1.2.3 misho 203: Run(int sock)
1.1.2.2 misho 204: {
1.1.2.4 misho 205: io_sockaddr_t sa;
206: socklen_t sslen = sizeof sa.ss;
207: int cli;
1.1.2.5 misho 208: pthread_t tid;
1.1.2.18 misho 209: ait_val_t *v;
1.1.2.4 misho 210:
1.1.2.2 misho 211: FTRACE(1);
212:
1.1.2.5 misho 213: if (pthread_create(&tid, NULL, thrSched, NULL)) {
214: syslog(LOG_ERR, "Error:: thread scheduler #%d - %s", errno, strerror(errno));
215: return -1;
216: } else
217: pthread_detach(tid);
1.1.2.18 misho 218: VERB(2) ioLOGGER(LOG_DEBUG, "Run scheduler management thread");
1.1.2.5 misho 219:
1.1.2.3 misho 220: if (listen(sock, SOMAXCONN) == -1) {
1.1.2.4 misho 221: syslog(LOG_ERR, "Error:: listen(%d) #%d - %s\n", sock, errno, strerror(errno));
1.1.2.5 misho 222: pthread_cancel(tid);
1.1.2.3 misho 223: return -1;
224: }
225:
1.1.2.4 misho 226: while (!Kill) {
227: if ((cli = accept(sock, &sa.sa, &sslen)) == -1) {
228: syslog(LOG_ERR, "Error:: accept() #%d - %s", errno, strerror(errno));
229: continue;
1.1.2.18 misho 230: }
231: v = io_allocVar();
232: if (!v) {
233: ioLIBERR(mqtt);
234: break;
1.1.2.4 misho 235: } else
1.1.2.18 misho 236: io_n2addr(&sa, v);
237: VERB(1) ioLOGGER(LOG_DEBUG, "Connected client with socket=%d from %s:%d", cli,
238: AIT_GET_STR(v), io_n2port(&sa));
1.1.2.4 misho 239:
1.1.2.18 misho 240: if (!schedRead(root, startSession, v, cli)) {
241: io_freeVar(v);
1.1.2.4 misho 242: close(cli);
1.1.2.18 misho 243: VERB(1) ioLOGGER(LOG_DEBUG, "Terminated client with socket=%d", cli);
1.1.2.4 misho 244: }
245: }
246:
1.1.2.2 misho 247: return 0;
248: }
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