1: #include "global.h"
2: #include "mqtt.h"
3: #include "client.h"
4:
5:
6: int
7: InitClient(void)
8: {
9: int sock;
10:
11: sock = socket(args->addr.sa.sa_family, SOCK_STREAM, IPPROTO_TCP);
12: if (sock == -1) {
13: printf("Error:: socket() #%d - %s\n", errno, strerror(errno));
14: return -1;
15: }
16: if (connect(sock, &args->addr.sa, args->addr.sa.sa_len) == -1) {
17: printf("Error:: connect() #%d - %s\n", errno, strerror(errno));
18: return -1;
19: }
20:
21: return sock;
22: }
23:
24: int
25: ConnectClient(int sock)
26: {
27: int siz = 0;
28: struct pollfd pfd;
29:
30: siz = mqtt_msgCONNECT(args->msg, (char*) AIT_GET_STR(&args->ConnID), args->ka,
31: (char*) AIT_GET_STR(&args->User), (char*) AIT_GET_STR(&args->Pass),
32: (char*) args->Will.Topic.val.string, (char*) args->Will.Msg.val.string,
33: !args->notClear, args->QoS, args->Retain);
34: if (siz == -1) {
35: printf("Error:: msgCONNECT #%d - %s\n", mqtt_GetErrno(), mqtt_GetError());
36: return -1;
37: }
38:
39: siz = send(sock, args->msg->msg_base, siz, 0);
40: if (siz == -1) {
41: printf("Error:: send() #%d - %s\n", errno, strerror(errno));
42: return -1;
43: } else
44: ioVERBOSE(3) printf("Sended CONNECT %d bytes\n", siz);
45:
46: pfd.fd = sock;
47: pfd.events = POLLIN | POLLPRI;
48: switch (poll(&pfd, 1, args->ka * 1000)) {
49: case -1:
50: printf("Error:: poll() #%d - %s\n", errno, strerror(errno));
51: return -1;
52: case 0:
53: ioVERBOSE(3) printf("Timeout reached (%d) ...\n", args->ka * 1000);
54: return -1;
55: }
56: if (pfd.revents & (POLLERR | POLLHUP | POLLNVAL))
57: return -1;
58:
59: siz = recv(sock, args->msg->msg_base, args->msg->msg_len, 0);
60: if (siz == -1) {
61: printf("Error:: recv() #%d - %s\n", errno, strerror(errno));
62: return -1;
63: } else
64: ioVERBOSE(3) printf("Received %d bytes\n", siz);
65:
66: return (u_char) mqtt_readCONNACK(args->msg);
67: }
68:
69: int
70: CloseClient(int sock)
71: {
72: int siz = 0;
73:
74: siz = mqtt_msgDISCONNECT(args->msg);
75: if (siz == -1) {
76: printf("Error:: msgDISCONNECT #%d - %s\n", mqtt_GetErrno(), mqtt_GetError());
77: return -1;
78: }
79:
80: siz = send(sock, args->msg->msg_base, siz, 0);
81: if (siz == -1) {
82: printf("Error:: send() #%d - %s\n", errno, strerror(errno));
83: return -1;
84: } else
85: ioVERBOSE(3) printf("Sended DISCONNECT %d bytes\n", siz);
86:
87: shutdown(sock, SHUT_RDWR);
88: close(sock);
89: return siz;
90: }
91:
92: int
93: KAClient(int sock)
94: {
95: int siz = 0;
96: struct pollfd pfd;
97:
98: siz = mqtt_msgPINGREQ(args->msg);
99: if (siz == -1) {
100: printf("Error:: msgPINGREQ #%d - %s\n", mqtt_GetErrno(), mqtt_GetError());
101: return -1;
102: }
103: if (SendTo(sock, siz) == -1)
104: return -1;
105:
106: pfd.fd = sock;
107: pfd.events = POLLIN | POLLPRI;
108: switch (poll(&pfd, 1, args->ka * 1000)) {
109: case -1:
110: printf("Error:: poll() #%d - %s\n", errno, strerror(errno));
111: return -1;
112: case 0:
113: ioVERBOSE(3) printf("Timeout reached (%d) ...\n", args->ka * 1000);
114: return -1;
115: }
116: if (pfd.revents & (POLLERR | POLLHUP | POLLNVAL))
117: return -1;
118:
119: siz = recv(sock, args->msg->msg_base, args->msg->msg_len, 0);
120: if (siz == -1) {
121: printf("Error:: recv() #%d - %s\n", errno, strerror(errno));
122: return -1;
123: } else
124: ioVERBOSE(3) printf("Received %d bytes\n", siz);
125:
126: return mqtt_readPINGRESP(args->msg);
127: }
128:
129: void *
130: OpenFile(void)
131: {
132: int f, siz = 0;
133: void *mem;
134:
135: if (!args->isFile)
136: return NULL;
137:
138: f = open(AIT_GET_STR(&args->Value), O_RDONLY);
139: if (f == -1) {
140: printf("Error:: in open file #%d - %s\n", errno, strerror(errno));
141: return NULL;
142: }
143: mem = mmap(NULL, siz, PROT_READ, MAP_PRIVATE, f, 0);
144: if (mem == MAP_FAILED) {
145: printf("Error:: in map file #%d - %s\n", errno, strerror(errno));
146: close(f);
147: return NULL;
148: } else
149: close(f);
150:
151: AIT_SET_PTR(&args->Value, mem, siz);
152: return mem;
153: }
154:
155: void
156: CloseFile(void)
157: {
158: if (args->isFile) {
159: munmap(AIT_GET_PTR(&args->Value), AIT_LEN(&args->Value));
160: AIT_FREE_VAL(&args->Value);
161: }
162: }
163:
164: inline int
165: SendTo(int sock, int siz)
166: {
167: siz = send(sock, args->msg->msg_base, siz, 0);
168: if (siz == -1) {
169: printf("Error:: send() #%d - %s\n", errno, strerror(errno));
170: return -1;
171: } else
172: ioVERBOSE(3) printf("Sended PUBLISH %d bytes\n", siz);
173:
174: return siz;
175: }
176:
177: inline int
178: RecvFrom(int sock)
179: {
180: struct pollfd pfd;
181: int siz = 0;
182:
183: pfd.fd = sock;
184: pfd.events = POLLIN | POLLPRI;
185: do {
186: switch (poll(&pfd, 1, args->ka * 1000)) {
187: case -1:
188: printf("Error:: poll() #%d - %s\n", errno, strerror(errno));
189: return -1;
190: case 0:
191: ioVERBOSE(3) printf("Timeout reached (%d) ...\n", args->ka * 1000);
192: if (KAClient(sock) == -1)
193: return -1;
194: continue;
195: }
196: if (pfd.revents & (POLLERR | POLLHUP | POLLNVAL))
197: return -1;
198: } while (0);
199:
200: siz = recv(sock, args->msg->msg_base, args->msg->msg_len, 0);
201: if (siz == -1) {
202: printf("Error:: recv() #%d - %s\n", errno, strerror(errno));
203: return -1;
204: } else
205: ioVERBOSE(3) printf("Received %d bytes\n", siz);
206:
207: return siz;
208: }
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