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

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Revision 1.1 - (show 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 #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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