| 1 | /* -*-c-*- |
| 2 | * |
| 3 | * $Id: path.h,v 1.1 1999/04/06 20:12:07 mdw Exp $ |
| 4 | * |
| 5 | * Check a path for safety |
| 6 | * |
| 7 | * (c) 1999 Mark Wooding |
| 8 | */ |
| 9 | |
| 10 | /*----- Licensing notice --------------------------------------------------* |
| 11 | * |
| 12 | * This file is part of chkpath. |
| 13 | * |
| 14 | * chkpath is free software; you can redistribute it and/or modify |
| 15 | * it under the terms of the GNU General Public License as published by |
| 16 | * the Free Software Foundation; either version 2 of the License, or |
| 17 | * (at your option) any later version. |
| 18 | * |
| 19 | * chkpath is distributed in the hope that it will be useful, |
| 20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 22 | * GNU General Public License for more details. |
| 23 | * |
| 24 | * You should have received a copy of the GNU General Public License |
| 25 | * along with chkpath; if not, write to the Free Software Foundation, |
| 26 | * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 27 | */ |
| 28 | |
| 29 | /*----- Revision history --------------------------------------------------* |
| 30 | * |
| 31 | * $Log: path.h,v $ |
| 32 | * Revision 1.1 1999/04/06 20:12:07 mdw |
| 33 | * Initial revision |
| 34 | * |
| 35 | */ |
| 36 | |
| 37 | #ifndef PATH_H |
| 38 | #define PATH_H |
| 39 | |
| 40 | #ifdef __cplusplus |
| 41 | extern "C" { |
| 42 | #endif |
| 43 | |
| 44 | /*----- Header files ------------------------------------------------------*/ |
| 45 | |
| 46 | #include <limits.h> |
| 47 | #include <sys/types.h> |
| 48 | |
| 49 | /*----- Data structures ---------------------------------------------------*/ |
| 50 | |
| 51 | /* --- Search request --- * |
| 52 | * |
| 53 | * This contains parameters from the caller to control what problems are |
| 54 | * looked for, and what to do when they're found. |
| 55 | */ |
| 56 | |
| 57 | struct chkpath { |
| 58 | uid_t cp_uid; /* Uid that's considered OK */ |
| 59 | gid_t cp_gid[NGROUPS_MAX + 1]; /* Array of groups that are OK */ |
| 60 | int cp_gids; /* Number of groups in the array */ |
| 61 | int cp_verbose; /* Verbosity level to spit up */ |
| 62 | int cp_what; /* What things to check for */ |
| 63 | void (*cp_report)(int /*what*/, int /*verb*/, |
| 64 | const char */*dir*/, const char */*msg*/, |
| 65 | void */*p*/); |
| 66 | void *cp_arg; /* Argument for cp_report */ |
| 67 | }; |
| 68 | |
| 69 | /* --- Flags for `@what@' fields in the above --- */ |
| 70 | |
| 71 | #define CP_ERROR 1 /* Error report */ |
| 72 | #define CP_WRWORLD 2 /* Check write by world */ |
| 73 | #define CP_WRGRP 4 /* Check write by any group */ |
| 74 | #define CP_WROTHGRP 8 /* Check write by other group */ |
| 75 | #define CP_WROTHUSR 16 /* Check write by other user */ |
| 76 | #define CP_SYMLINK 32 /* Report symbolic links */ |
| 77 | #define CP_REPORT 64 /* Make user-readable reports */ |
| 78 | #define CP_STICKYOK 128 /* Don't care if sticky is set */ |
| 79 | |
| 80 | /*----- Functions provided ------------------------------------------------*/ |
| 81 | |
| 82 | /* --- @path_check@ --- * |
| 83 | * |
| 84 | * Arguments: @const char *p@ = directory name which needs checking |
| 85 | * @struct chkpath *cp@ = caller parameters for the check |
| 86 | * |
| 87 | * Returns: Zero if all is well, otherwise bitmask of problems. |
| 88 | * |
| 89 | * Use: Scrutinises a directory path to see what evil things other |
| 90 | * users could do to it. |
| 91 | */ |
| 92 | |
| 93 | extern int path_check(const char */*p*/, struct chkpath */*cp*/); |
| 94 | |
| 95 | /* --- @path_setids@ --- * |
| 96 | * |
| 97 | * Arguments: @struct chkpath *cp@ = pointer to block to fill in |
| 98 | * |
| 99 | * Returns: --- |
| 100 | * |
| 101 | * Use: Fills in the user ids and things in the structure. |
| 102 | */ |
| 103 | |
| 104 | extern void path_setids(struct chkpath */*cp*/); |
| 105 | |
| 106 | /*----- That's all, folks -------------------------------------------------*/ |
| 107 | |
| 108 | #ifdef __cplusplus |
| 109 | } |
| 110 | #endif |
| 111 | |
| 112 | #endif |