/[smeserver]/rpms/stunnel-tls/sme7/makesock.c
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Annotation of /rpms/stunnel-tls/sme7/makesock.c

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Revision 1.1 - (hide annotations) (download)
Tue Jun 12 17:44:40 2007 UTC (17 years, 4 months ago) by slords
Branch: MAIN
CVS Tags: stunnel-tls-3_22-4_el4_sme, HEAD
Content type: text/plain
Import on branch sme7 of package stunnel-tls-3.22-4.el4.sme.src.rpm

1 slords 1.1 #include <sys/types.h>
2     #include <sys/socket.h>
3     #include <stdio.h>
4     #include <errno.h>
5     #include <stdlib.h>
6     #include <fcntl.h>
7     #include <strings.h>
8    
9     int main(int argc, char *argv[])
10     {
11     int s[2];
12     char **args1, **args2;
13     int firstarg, lastarg;
14     int i;
15    
16     if (socketpair(PF_UNIX, SOCK_STREAM, 0, s) < 0)
17     {
18     fprintf(stderr,"socketpair failed: %s\n",strerror(errno));
19     exit(1);
20     }
21    
22     /* Make this configurable later, but for now it's fine. */
23    
24     /* Find the first program to execute. */
25     firstarg = 1;
26     for(i=1;i<argc;i++)
27     {
28     if (strcmp(argv[i],"-makesock_connect_to")==0)
29     {
30     break;
31     }
32     }
33     lastarg = i;
34     if ( (args1=malloc((lastarg-firstarg+1) * sizeof(char *))) == NULL)
35     {
36     fprintf(stderr,"malloc error: %s\n",strerror(errno));
37     exit(1);
38     }
39     for (i=0;i<(lastarg-firstarg);i++)
40     {
41     args1[i]=argv[firstarg+i];
42     }
43     args1[i] = NULL;
44    
45     lastarg++;
46    
47     /* Now find the last program to execute. */
48     if ( (args2=malloc((argc-lastarg+1) * sizeof(char *))) == NULL)
49     {
50     fprintf(stderr,"malloc error: %s\n",strerror(errno));
51     exit(1);
52     }
53     for(i=0;i<(argc-lastarg);i++)
54     {
55     args2[i] = argv[lastarg+i];
56     }
57     args2[i] = NULL;
58    
59     switch(fork())
60     {
61     case -1:
62     /* Error. */
63     exit(1);
64     case 0:
65     /* Child */
66     close(s[0]);
67     close(0);
68     close(1);
69     if (dup2(s[1],0) < 0)
70     {
71     fprintf(stderr,"dup2 error: %s\n",strerror(errno));
72     exit(1);
73     }
74     if (dup2(s[1],1) < 0)
75     {
76     fprintf(stderr,"dup2 error: %s\n",strerror(errno));
77     exit(1);
78     }
79     if (execvp(args2[0],args2) < 0)
80     {
81     fprintf(stderr,"execvp error: %s\n",strerror(errno));
82     exit(1);
83     }
84     break;
85     default:
86     /* Parent */
87     if (s[0] != 3)
88     {
89     close(3);
90     if (dup2(s[0],3) < 0)
91     {
92     fprintf(stderr,"dup2 error: %s\n",strerror(errno));
93     exit(1);
94     }
95     if (fcntl(3,F_SETFD,0) == -1) /* Turn off close-on-exec */
96     {
97     fprintf(stderr,"fcntl error: %s\n",strerror(errno));
98     exit(1);
99     }
100     }
101     if (s[1] != 3)
102     close(s[1]);
103     if (execvp(args1[0],args1) < 0)
104     {
105     fprintf(stderr,"execvp error: %s\n",strerror(errno));
106     exit(1);
107     }
108     break;
109     }
110     }
111    
112    
113    

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