rsc | be8b315 | 2004-06-17 03:27:35 +0000 | [diff] [blame] | 1 | #include <u.h> |
| 2 | #include <libc.h> |
| 3 | #include <bio.h> |
| 4 | #include <auth.h> |
| 5 | |
| 6 | /* |
| 7 | * see if user is in the group noworld, i.e., has all file |
| 8 | * priviledges masked with 770, and all directories with |
| 9 | * 771, before checking access rights |
| 10 | */ |
| 11 | int |
| 12 | noworld(char *user) |
| 13 | { |
| 14 | Biobuf *b; |
| 15 | char *p; |
| 16 | int n; |
| 17 | |
| 18 | b = Bopen("/adm/users", OREAD); |
| 19 | if(b == nil) |
| 20 | return 0; |
| 21 | while((p = Brdline(b, '\n')) != nil){ |
| 22 | p[Blinelen(b)-1] = 0; |
| 23 | p = strchr(p, ':'); |
| 24 | if(p == nil) |
| 25 | continue; |
| 26 | if(strncmp(p, ":noworld:", 9) == 0){ |
| 27 | p += 9; |
| 28 | break; |
| 29 | } |
| 30 | } |
| 31 | n = strlen(user); |
| 32 | while(p != nil && *p != 0){ |
| 33 | p = strstr(p, user); |
| 34 | if(p == nil) |
| 35 | break; |
| 36 | if(*(p-1) == ':' || *(p-1) == ',') |
| 37 | if(*(p+n) == ':' || *(p+n) == ',' || *(p+n) == 0){ |
| 38 | Bterm(b); |
| 39 | return 1; |
| 40 | } |
| 41 | p++; |
| 42 | } |
| 43 | Bterm(b); |
| 44 | return 0; |
| 45 | } |