1: #include "global.h"
2:
3:
4: /*
5: * mqtt_db_log() Log database connection message
6: *
7: * @fmt = format string
8: * @... = argument list
9: * return: none
10: */
11: static void
12: mqtt_rtlm_log(const char *fmt, ...)
13: {
14: va_list lst;
15:
16: va_start(lst, fmt);
17: vsyslog(LOG_ERR, fmt, lst);
18: va_end(lst);
19: }
20: #define MQTT_RTLM_LOG(_sql) (assert((_sql)), mqtt_rtlm_log("Error:: SQL #%d - %s", \
21: sqlite3_errcode((_sql)), sqlite3_errmsg((_sql))))
22:
23:
24: /*
25: * mqtt_rtlm_open() Open database connection
26: *
27: * @cfg = config filename
28: * return: NULL error or SQL handle
29: */
30: sqlite3 *
31: mqtt_rtlm_open(sl_config *cfg)
32: {
33: sqlite3 *sql = NULL;
34: const char *str = NULL;
35:
36: if (!cfg)
37: return NULL;
38:
39: str = (const char*) cfg_GetAttribute(cfg, CFG("mqtt_pub"), CFG("name"));
40: if (!str) {
41: mqtt_rtlm_log("Error:: Unknown database name ...\n");
42: return NULL;
43: }
44:
45: if (sqlite3_open_v2(str, &sql, SQLITE_OPEN_READWRITE, NULL)) {
46: MQTT_RTLM_LOG(sql);
47: sqlite3_close(sql);
48: return NULL;
49: }
50:
51: return sql;
52: }
53:
54: /*
55: * mqtt_rtlm_close() Close database connection
56: *
57: * @sql = SQL handle
58: * return: none
59: */
60: void
61: mqtt_rtlm_close(sqlite3 *sql)
62: {
63: sqlite3_close(sql);
64: }
65:
66: /*
67: * mqtt_rtlm_init_session() Create session
68: *
69: * @cfg = loaded config
70: * @sql = SQL handle
71: * @user = username
72: * @host = hostname
73: * @port = port
74: * return: -1 error, 0 session already appears or >0 row changed
75: */
76: int
77: mqtt_rtlm_init_session(sl_config *cfg, sqlite3 *sql, const char *user, const char *host, u_short port)
78: {
79: int ret = 0;
80: char *str, szStmt[BUFSIZ] = { 0 };
81: sqlite3_stmt *stmt;
82:
83: if (!cfg || !sql)
84: return -1;
85:
86: str = (char*) cfg_GetAttribute(cfg, CFG("mqtt_pub"), CFG("tbl_online"));
87: if (!str) {
88: mqtt_rtlm_log("Error:: not found topics table name");
89: return -1;
90: }
91: snprintf(szStmt, sizeof szStmt, "INSERT INTO %s (Username, RemoteHost, RemotePort) "
92: "VALUES ('%s', '%s', %d);", str, user, host, port);
93:
94: if (sqlite3_prepare_v2(sql, szStmt, strlen(szStmt), &stmt, NULL)) {
95: MQTT_RTLM_LOG(sql);
96: return -1;
97: }
98: if ((ret = sqlite3_step(stmt)) == SQLITE_DONE)
99: ret = sqlite3_changes(sql);
100: else {
101: if (ret > SQLITE_OK && ret < SQLITE_ROW)
102: MQTT_RTLM_LOG(sql);
103: ret = 0;
104: }
105: sqlite3_finalize(stmt);
106:
107: return ret;
108: }
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