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17 | 17 | ||
18 | /* Wrap uid and exec */ |
18 | /* Wrap uid and exec */ |
19 | 19 | ||
20 | #include <unistd.h> |
20 | #include <unistd.h> |
21 | #include <string.h> |
21 | #include <string.h> |
22 | #include <assert.h> |
- | |
23 | 22 | ||
24 | int main(int argc,char *argv[]) |
23 | int main(int argc,char *argv[]) |
25 | { |
24 | { |
26 | char *args[1024]; |
25 | char *args[1024]; |
27 | int i, uid1, uid2, gid1, gid2; |
26 | int i, uid1, uid2, gid1, gid2; |
Line 29... | Line 28... | ||
29 | if(argc<2) return 0; |
28 | if(argc<2) return 0; |
30 | for(i=0;i<1000 && i<argc; i++) args[i]=argv[i+1]; |
29 | for(i=0;i<1000 && i<argc; i++) args[i]=argv[i+1]; |
31 | args[i]=NULL; |
30 | args[i]=NULL; |
32 | uid1=geteuid(); uid2=getuid(); gid1=getegid(); gid2=getgid(); |
31 | uid1=geteuid(); uid2=getuid(); gid1=getegid(); gid2=getgid(); |
33 | if(strchr(args[0],'/')) { |
32 | if(strchr(args[0],'/')) { |
34 | assert(setreuid(uid1,uid2)==0); |
- | |
35 |
|
33 | setreuid(uid1,uid2); setregid(gid1,gid2); |
36 | execv(args[0],args); |
34 | execv(args[0],args); |
37 | } |
35 | } |
38 | else { |
36 | else { |
39 | assert(setreuid(uid1,uid1)==0); |
- | |
40 |
|
37 | setreuid(uid1,uid1); setregid(gid1,gid1); |
41 | execvp(args[0],args); |
38 | execvp(args[0],args); |
42 | } |
39 | } |
43 | return 127; |
40 | return 127; |
44 | } |
41 | } |
45 | 42 |