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
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
|
#define NOLOGATALL
#include "../source/acbuf.cc"
#include "../include/sockio.h"
#include "../include/fileio.h"
#include <unistd.h>
#include <sys/select.h>
#include <signal.h>
namespace acng{
namespace cfg
{
int nettimeout=60;
}
}
int main(int argc, char **argv)
{
using namespace acng;
signal(SIGPIPE, SIG_IGN);
acbuf bufToD, bufFromD;
int in=fileno(stdin);
int out=fileno(stdout);
if (in<0 || out<0)
return -1; // hm?!
if (argc<2)
{
printf("ERROR: Missing socket path argument, check inetd.conf.\n");
return 1;
}
size_t pLen=strlen(argv[1]);
if (pLen>107)
{
printf("ERROR: Bad socket path, too long.\n");
return -2;
}
struct stat stinfo;
if (0!=stat(argv[1], &stinfo) || !S_ISSOCK(stinfo.st_mode))
{
printf("HTTP/1.1 500 ERROR: Socket file missing or in bad state. Check the command lines.\r\n\r\n");
return 2;
}
struct sockaddr_storage ss;
socklen_t slen = sizeof(ss);
char hbuf[NI_MAXHOST];
#if 1
if (0!=getpeername(in, (struct sockaddr *)&ss, &slen))
{
printf("ERROR: stdin is not a socket.\n");
return 1;
}
if (getnameinfo((struct sockaddr*) &ss, sizeof(ss), hbuf, sizeof(hbuf),
nullptr, 0, NI_NUMERICHOST))
{
printf("ERROR: could not resolve hostname\n");
return 1;
}
#else
strcpy(hbuf, "localhost");
#endif
bufToD.setsize(4000);
bufFromD.setsize(16000);
int n=snprintf(bufToD.wptr(), bufToD.freecapa(),
"GET / HTTP/1.1\r\nX-Original-Source: %s\r\n\r\n", hbuf);
if (n<0 || n==(int)bufToD.freecapa()) // weird... too long?
return 3;
bufToD.got(n);
int s=socket(PF_UNIX, SOCK_STREAM, 0);
if(s<0)
return 4;
struct sockaddr_un addr;
addr.sun_family=PF_UNIX;
strcpy(addr.sun_path, argv[1]);
socklen_t adlen = pLen+1+offsetof(struct sockaddr_un, sun_path);
if ( 0!=connect(s, (struct sockaddr*)&addr, adlen))
{
printf("HTTP/1.1 500 ERROR: Unable to attach to the local daemon: %s\r\n\r\n", strerror(errno));
return 5;
}
int maxfd=1+std::max(in, std::max(out, s));
while (true)
{
fd_set rfds, wfds;
FD_ZERO(&rfds);
FD_ZERO(&wfds);
if(bufToD.size()>0)
FD_SET(s, &wfds);
if(bufFromD.size()>0)
FD_SET(out, &wfds);
if(bufFromD.freecapa()>0)
FD_SET(s, &rfds);
if(bufToD.freecapa()>0)
FD_SET(in, &rfds);
int nReady=select(maxfd, &rfds, &wfds, nullptr, nullptr);
if (nReady<0)
{
fputs("Select failure.\n", stdout);
exit(1);
}
if(FD_ISSET(s, &wfds))
{
if(bufToD.syswrite(s)<0)
return 1;
}
if(FD_ISSET(out, &wfds))
{
if(bufFromD.syswrite(out)<0)
return 1;
}
if(FD_ISSET(s, &rfds))
{
if(bufFromD.sysread(s)<=0)
goto finished;
}
if(FD_ISSET(in, &rfds))
{
if(bufToD.sysread(in)<=0)
goto finished;
}
}
finished:
forceclose(s);
::shutdown(s, SHUT_RDWR);
return 0;
}
|
