| 1 | #include <sys/types.h> |
| 2 | #include <sys/stat.h> |
| 3 | #include "substdio.h" |
| 4 | #include "stralloc.h" |
| 5 | #include "getln.h" |
| 6 | #include "readwrite.h" |
| 7 | #include "exit.h" |
| 8 | #include "error.h" |
| 9 | #include "strerr.h" |
| 10 | #include "byte.h" |
| 11 | |
| 12 | stralloc target = {0}; |
| 13 | char *to; |
| 14 | |
| 15 | #define WARNING "instcheck: warning: " |
| 16 | #define FATAL "instcheck: fatal: " |
| 17 | void nomem() { strerr_die2x(111,FATAL,"out of memory"); } |
| 18 | |
| 19 | void doit(line) |
| 20 | stralloc *line; |
| 21 | { |
| 22 | struct stat st; |
| 23 | char *x; |
| 24 | unsigned int xlen; |
| 25 | unsigned int i; |
| 26 | char *type; |
| 27 | char *uidstr; |
| 28 | char *gidstr; |
| 29 | char *modestr; |
| 30 | char *mid; |
| 31 | char *name; |
| 32 | unsigned long uid; |
| 33 | unsigned long gid; |
| 34 | unsigned long mode; |
| 35 | int ftype; |
| 36 | |
| 37 | x = line->s; xlen = line->len; |
| 38 | |
| 39 | type = x; |
| 40 | i = byte_chr(x,xlen,':'); if (i == xlen) return; |
| 41 | x[i++] = 0; x += i; xlen -= i; |
| 42 | |
| 43 | uidstr = x; |
| 44 | i = byte_chr(x,xlen,':'); if (i == xlen) return; |
| 45 | x[i++] = 0; x += i; xlen -= i; |
| 46 | |
| 47 | gidstr = x; |
| 48 | i = byte_chr(x,xlen,':'); if (i == xlen) return; |
| 49 | x[i++] = 0; x += i; xlen -= i; |
| 50 | |
| 51 | modestr = x; |
| 52 | i = byte_chr(x,xlen,':'); if (i == xlen) return; |
| 53 | x[i++] = 0; x += i; xlen -= i; |
| 54 | |
| 55 | mid = x; |
| 56 | i = byte_chr(x,xlen,':'); if (i == xlen) return; |
| 57 | x[i++] = 0; x += i; xlen -= i; |
| 58 | |
| 59 | name = x; |
| 60 | i = byte_chr(x,xlen,':'); if (i == xlen) return; |
| 61 | x[i++] = 0; x += i; xlen -= i; |
| 62 | |
| 63 | if (!stralloc_copys(&target,to)) nomem(); |
| 64 | if (!stralloc_cats(&target,mid)) nomem(); |
| 65 | if (!stralloc_cats(&target,name)) nomem(); |
| 66 | if (!stralloc_0(&target)) nomem(); |
| 67 | |
| 68 | uid = -1; if (*uidstr) scan_ulong(uidstr,&uid); |
| 69 | gid = -1; if (*gidstr) scan_ulong(gidstr,&gid); |
| 70 | scan_8long(modestr,&mode); |
| 71 | |
| 72 | switch(*type) { |
| 73 | case 'd': ftype = S_IFDIR; break; |
| 74 | case 'c': ftype = S_IFREG; break; |
| 75 | case 'z': ftype = S_IFREG; break; |
| 76 | case 'p': ftype = S_IFIFO; break; |
| 77 | default: return; |
| 78 | } |
| 79 | |
| 80 | if (stat(target.s,&st) == -1) { |
| 81 | if (errno == error_noent) |
| 82 | strerr_warn3(WARNING,target.s," does not exist",0); |
| 83 | else |
| 84 | strerr_warn4(WARNING,"unable to stat ",target.s,": ",&strerr_sys); |
| 85 | return; |
| 86 | } |
| 87 | |
| 88 | if ((uid != -1) && (st.st_uid != uid)) |
| 89 | strerr_warn3(WARNING,target.s," has wrong owner",0); |
| 90 | if ((gid != -1) && (st.st_gid != gid)) |
| 91 | strerr_warn3(WARNING,target.s," has wrong group",0); |
| 92 | if ((st.st_mode & 07777) != mode) |
| 93 | strerr_warn3(WARNING,target.s," has wrong permissions",0); |
| 94 | if ((st.st_mode & S_IFMT) != ftype) |
| 95 | strerr_warn3(WARNING,target.s," has wrong type",0); |
| 96 | } |
| 97 | |
| 98 | char buf[256]; |
| 99 | substdio in = SUBSTDIO_FDBUF(read,0,buf,sizeof(buf)); |
| 100 | stralloc line = {0}; |
| 101 | |
| 102 | void main(argc,argv) |
| 103 | int argc; |
| 104 | char **argv; |
| 105 | { |
| 106 | int match; |
| 107 | |
| 108 | umask(077); |
| 109 | |
| 110 | to = argv[1]; |
| 111 | if (!to) strerr_die2x(100,FATAL,"instcheck: usage: instcheck dir"); |
| 112 | |
| 113 | for (;;) { |
| 114 | if (getln(&in,&line,&match,'\n') == -1) |
| 115 | strerr_die2sys(111,FATAL,"unable to read input: "); |
| 116 | doit(&line); |
| 117 | if (!match) |
| 118 | _exit(0); |
| 119 | } |
| 120 | } |