Annotation of mqtt/src/dl.c, revision 1.2.2.3
1.2 misho 1: #include "global.h"
2: #include "rtlm.h"
3:
4:
5: static void *acc_rtlm, *pub_rtlm, *log_rtlm;
6:
7: struct tagCallbacks call;
8:
9:
10: /*
11: * mqttLog() Log message to syslog
12: *
13: * @fmt = format string
14: * @... = argument list
15: * return: none
16: */
17: void
18: mqttLog(const char *fmt, ...)
19: {
20: va_list lst;
21:
22: va_start(lst, fmt);
23: vsyslog(LOG_ERR, fmt, lst);
24: va_end(lst);
25: }
26:
27: void *
1.2.2.3 ! misho 28: mqttLoadRTLM(cfg_root_t *cfg, int modtype)
1.2 misho 29: {
30: const char *str, *attr;
31: void *rtlm = NULL;
1.2.2.3 ! misho 32: void *(*mqttOpenRTLM)(cfg_root_t *);
1.2 misho 33: void (*mqttCloseRTLM)(void *);
34:
35: if (!cfg)
36: return NULL;
37:
38: switch (modtype) {
39: case 0:
40: attr = "acc_file";
41: break;
42: case 1:
43: attr = "pub_file";
44: break;
45: default:
46: attr = "log_file";
47: break;
48: }
49:
1.2.2.3 ! misho 50: str = cfg_getAttribute(cfg, "mqttd", attr);
1.2 misho 51: if (!str) {
52: mqttLog("Error:: RTL module not found\n");
53: return NULL;
54: }
55:
56: rtlm = dlopen(str, RTLD_LAZY);
57: if (!rtlm) {
58: mqttLog("Error:: RTL module %s not found %s\n", str, dlerror());
59: return NULL;
60: }
61:
62: mqttOpenRTLM = dlsym(rtlm, "mqtt_rtlm_open");
63: if (!mqttOpenRTLM) {
64: mqttLog("Error:: Can't found mqtt_db_open call\n");
65: dlclose(rtlm);
66: return NULL;
67: }
68: mqttCloseRTLM = dlsym(rtlm, "mqtt_rtlm_close");
69: if (!mqttCloseRTLM) {
70: mqttLog("Error:: Can't found mqtt_db_close call\n");
71: dlclose(rtlm);
72: return NULL;
73: }
74:
75: switch (modtype) {
76: case 0:
77: acc_rtlm = rtlm;
78: call.OpenACC = mqttOpenRTLM;
79: call.CloseACC = mqttCloseRTLM;
80: call.LoginACC = dlsym(rtlm, "mqtt_rtlm_login");
81: if (!call.LoginACC) {
82: mqttLog("Error:: incorrect module ...\n");
83: dlclose(rtlm);
84: return NULL;
85: }
86: break;
87: case 1:
88: pub_rtlm = rtlm;
89: call.OpenPUB = mqttOpenRTLM;
90: call.ClosePUB = mqttCloseRTLM;
91: call.InitSessPUB = dlsym(rtlm, "mqtt_rtlm_init_session");
92: call.FiniSessPUB = dlsym(rtlm, "mqtt_rtlm_fini_session");
93: call.ChkSessPUB = dlsym(rtlm, "mqtt_rtlm_chk_session");
1.2.2.1 misho 94: call.WritePUB_topic = dlsym(rtlm, "mqtt_rtlm_write_topic");
95: call.ReadPUB_topic = dlsym(rtlm, "mqtt_rtlm_read_topic");
96: call.DeletePUB_topic = dlsym(rtlm, "mqtt_rtlm_delete_topic");
97: call.WritePUB_subscribe = dlsym(rtlm, "mqtt_rtlm_write_subscribe");
98: call.ReadPUB_subscribe = dlsym(rtlm, "mqtt_rtlm_read_subscribe");
99: call.DeletePUB_subscribe = dlsym(rtlm, "mqtt_rtlm_delete_subscribe");
1.2 misho 100: if (!call.InitSessPUB || !call.FiniSessPUB || !call.ChkSessPUB ||
1.2.2.1 misho 101: !call.WritePUB_topic || !call.ReadPUB_topic ||
1.2.2.2 misho 102: !call.DeletePUB_topic || !call.WritePUB_subscribe ||
103: !call.ReadPUB_subscribe || !call.DeletePUB_subscribe) {
1.2 misho 104: mqttLog("Error:: incorrect module ...\n");
105: dlclose(rtlm);
106: return NULL;
107: }
108: break;
109: default:
110: log_rtlm = rtlm;
111: call.OpenLOG = mqttOpenRTLM;
112: call.CloseLOG = mqttCloseRTLM;
113: call.LOG = dlsym(rtlm, "mqtt_rtlm_logger");
114: if (!call.LOG) {
115: mqttLog("Error:: incorrect module ...\n");
116: dlclose(rtlm);
117: return NULL;
118: }
119: break;
120: }
121:
122: return rtlm;
123: }
124:
125: void
126: mqttUnloadRTLM(int modtype)
127: {
128: switch (modtype) {
129: case 0:
130: dlclose(acc_rtlm);
131: break;
132: case 1:
133: dlclose(pub_rtlm);
134: break;
135: default:
136: dlclose(log_rtlm);
137: break;
138: }
139: }
140:
141: inline int
1.2.2.3 ! misho 142: mqttMkDir(cfg_root_t *cfg)
1.2 misho 143: {
144: const char *str;
145:
146: if (!cfg)
147: return -1;
148:
1.2.2.3 ! misho 149: str = (const char*) cfg_getAttribute(cfg, "mqttd", "statedir");
1.2 misho 150: if (!str)
151: return -1;
152:
153: if (mkdir(str, 0600) == -1 && errno != EEXIST)
154: return -1;
155:
156: return 0;
157: }
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