diff options
Diffstat (limited to 'src/libauth/noworld.c')
-rw-r--r-- | src/libauth/noworld.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/src/libauth/noworld.c b/src/libauth/noworld.c new file mode 100644 index 00000000..c61b1463 --- /dev/null +++ b/src/libauth/noworld.c @@ -0,0 +1,45 @@ +#include <u.h> +#include <libc.h> +#include <bio.h> +#include <auth.h> + +/* + * see if user is in the group noworld, i.e., has all file + * priviledges masked with 770, and all directories with + * 771, before checking access rights + */ +int +noworld(char *user) +{ + Biobuf *b; + char *p; + int n; + + b = Bopen("/adm/users", OREAD); + if(b == nil) + return 0; + while((p = Brdline(b, '\n')) != nil){ + p[Blinelen(b)-1] = 0; + p = strchr(p, ':'); + if(p == nil) + continue; + if(strncmp(p, ":noworld:", 9) == 0){ + p += 9; + break; + } + } + n = strlen(user); + while(p != nil && *p != 0){ + p = strstr(p, user); + if(p == nil) + break; + if(*(p-1) == ':' || *(p-1) == ',') + if(*(p+n) == ':' || *(p+n) == ',' || *(p+n) == 0){ + Bterm(b); + return 1; + } + p++; + } + Bterm(b); + return 0; +} |