1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
|
--- src/connect.c.orig Sat Feb 26 16:47:17 2005
+++ src/connect.c Sun Oct 9 13:06:34 2005
@@ -24,9 +24,11 @@
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
+#include <sys/types.h>
#include <sys/socket.h>
#include <fcntl.h>
#include <netdb.h>
+#include <netinet/in_systm.h>
#include <netinet/in.h>
#include <netinet/ip.h>
#include <netdb.h>
@@ -42,53 +44,52 @@
#include "runtime.h"
#include "debug.h"
+static pthread_mutex_t __thread_safe_lock = PTHREAD_MUTEX_INITIALIZER;
+
uerr_t connect_to_server(int *sock, char *name, int port, int timeout)
{
- unsigned int portnum;
+ char szPort[10];
int status;
- struct sockaddr_in server;
- struct hostent *hp, hostbuf;
extern int h_errno;
/* int opt; */
int noblock, flags;
- char *tmphstbuf;
- size_t hstbuflen = 2048;
- tmphstbuf = kmalloc(hstbuflen);
+ struct addrinfo hints, *res=NULL;
+ struct addrinfo *res0=NULL;
+ int error;
assert(name != NULL);
- portnum = port;
- memset((void *) &server, 0, sizeof(server));
+ memset(&hints, 0, sizeof(hints));
+ memset(szPort, 0, sizeof(szPort));
+ snprintf(szPort, sizeof(szPort), "%d", port);
+ hints.ai_family = AF_INET;
+ hints.ai_socktype = SOCK_STREAM;
message("Resolving %s", name);
- hp=k_gethostname (name,&hostbuf,&tmphstbuf,&hstbuflen);
-
- if (hp == NULL)
- {
- message("Failed to resolve %s", name);
- return HOSTERR;
- }
+ error = getaddrinfo(name, szPort, &hints, &res);
+ if (error) {
+ message("Failed to resolve %s", name);
+ pthread_mutex_unlock(&__thread_safe_lock);
+ freeaddrinfo(res);
+ return HOSTERR;
+ }
message("Resolved %s !", name);
-
- memcpy((void *) &server.sin_addr, hp->h_addr, hp->h_length);
- server.sin_family = hp->h_addrtype;
- server.sin_port = htons(portnum);
- if (tmphstbuf)
- {
- free(tmphstbuf);
- tmphstbuf = NULL;
- }
+ res0 = (struct addrinfo *) malloc(sizeof(struct addrinfo));
+ memcpy(res0, res, sizeof(struct addrinfo));
+ freeaddrinfo(res);
+ pthread_mutex_unlock(&__thread_safe_lock);
/*
* create socket
*/
- if ((*sock = socket(AF_INET, SOCK_STREAM, 0)) < 1)
+ if ((*sock = socket(res0->ai_family, res0->ai_socktype, 0)) < 1)
{
message("unable to create socket\n");
+ free(res0);
return CONSOCKERR;
}
/*Experimental */
@@ -100,8 +101,7 @@
message("Connecting to server.......");
-
- status = connect(*sock, (struct sockaddr *) &server, sizeof(server));
+ status = connect(*sock, res0->ai_addr, res0->ai_addrlen);
if (status == -1 && noblock != -1 && errno == EINPROGRESS)
{
@@ -137,10 +137,13 @@
{
close(*sock);
- if (errno == ECONNREFUSED)
+ if (errno == ECONNREFUSED) {
+ free(res0);
return CONREFUSED;
- else
+ } else {
+ free(res0);
return CONERROR;
+ }
} else
{
flags = fcntl(*sock, F_GETFL, 0);
@@ -156,6 +159,7 @@
* (char *) &opt, (int) sizeof(opt));
*/
message("Connect OK!");
+ free(res0);
return NOCONERROR;
}
|