1 /* 2 * Copyright (c) 1998-2001 Sendmail, Inc. and its suppliers. 3 * All rights reserved. 4 * Copyright (c) 1983, 1995-1997 Eric P. Allman. All rights reserved. 5 * Copyright (c) 1988, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * By using this file, you agree to the terms and conditions set 9 * forth in the LICENSE file which can be found at the top level of 10 * the sendmail distribution. 11 * 12 * 13 * $Id: sendmail.h,v 8.68 2002/07/01 22:18:53 gshapiro Exp $ 14 */ 15 16 /* 17 ** SENDMAIL.H -- Global definitions for sendmail. 18 */ 19 20 #include <stdio.h> 21 #include <sm/bitops.h> 22 #include <sm/io.h> 23 #include <sm/string.h> 24 #include "conf.h" 25 26 /********************************************************************** 27 ** Table sizes, etc.... 28 ** There shouldn't be much need to change these.... 29 **********************************************************************/ 30 #ifndef MAXMAILERS 31 # define MAXMAILERS 25 /* maximum mailers known to system */ 32 #endif /* ! MAXMAILERS */ 33 34 /* 35 ** Flags passed to safefile/safedirpath. 36 */ 37 38 #define SFF_ANYFILE 0L /* no special restrictions */ 39 #define SFF_MUSTOWN 0x00000001L /* user must own this file */ 40 #define SFF_NOSLINK 0x00000002L /* file cannot be a symbolic link */ 41 #define SFF_ROOTOK 0x00000004L /* ok for root to own this file */ 42 #define SFF_RUNASREALUID 0x00000008L /* if no ctladdr, run as real uid */ 43 #define SFF_NOPATHCHECK 0x00000010L /* don't bother checking dir path */ 44 #define SFF_SETUIDOK 0x00000020L /* set-user-ID files are ok */ 45 #define SFF_CREAT 0x00000040L /* ok to create file if necessary */ 46 #define SFF_REGONLY 0x00000080L /* regular files only */ 47 #define SFF_SAFEDIRPATH 0x00000100L /* no writable directories allowed */ 48 #define SFF_NOHLINK 0x00000200L /* file cannot have hard links */ 49 #define SFF_NOWLINK 0x00000400L /* links only in non-writable dirs */ 50 #define SFF_NOGWFILES 0x00000800L /* disallow world writable files */ 51 #define SFF_NOWWFILES 0x00001000L /* disallow group writable files */ 52 #define SFF_OPENASROOT 0x00002000L /* open as root instead of real user */ 53 #define SFF_NOLOCK 0x00004000L /* don't lock the file */ 54 #define SFF_NOGRFILES 0x00008000L /* disallow g readable files */ 55 #define SFF_NOWRFILES 0x00010000L /* disallow o readable files */ 56 #define SFF_NOTEXCL 0x00020000L /* creates don't need to be exclusive */ 57 #define SFF_EXECOK 0x00040000L /* executable files are ok (E_SM_ISEXEC) */ 58 #define SFF_NBLOCK 0x00080000L /* use a non-blocking lock */ 59 #define SFF_NORFILES (SFF_NOGRFILES|SFF_NOWRFILES) 60 61 /* pseudo-flags */ 62 #define SFF_NOLINK (SFF_NOHLINK|SFF_NOSLINK) 63 64 /* functions */ 65 extern int safefile __P((char *, UID_T, GID_T, char *, long, int, struct stat *)); 66 extern int safedirpath __P((char *, UID_T, GID_T, char *, long, int, int)); 67 extern int safeopen __P((char *, int, int, long)); 68 extern SM_FILE_T*safefopen __P((char *, int, int, long)); 69 extern int dfopen __P((char *, int, int, long)); 70 extern bool filechanged __P((char *, int, struct stat *)); 71 72 /* 73 ** DontBlameSendmail options 74 ** 75 ** Hopefully nobody uses these. 76 */ 77 78 #define DBS_SAFE 0 79 #define DBS_ASSUMESAFECHOWN 1 80 #define DBS_GROUPWRITABLEDIRPATHSAFE 2 81 #define DBS_GROUPWRITABLEFORWARDFILESAFE 3 82 #define DBS_GROUPWRITABLEINCLUDEFILESAFE 4 83 #define DBS_GROUPWRITABLEALIASFILE 5 84 #define DBS_WORLDWRITABLEALIASFILE 6 85 #define DBS_FORWARDFILEINUNSAFEDIRPATH 7 86 #define DBS_MAPINUNSAFEDIRPATH 8 87 #define DBS_LINKEDALIASFILEINWRITABLEDIR 9 88 #define DBS_LINKEDCLASSFILEINWRITABLEDIR 10 89 #define DBS_LINKEDFORWARDFILEINWRITABLEDIR 11 90 #define DBS_LINKEDINCLUDEFILEINWRITABLEDIR 12 91 #define DBS_LINKEDMAPINWRITABLEDIR 13 92 #define DBS_LINKEDSERVICESWITCHFILEINWRITABLEDIR 14 93 #define DBS_FILEDELIVERYTOHARDLINK 15 94 #define DBS_FILEDELIVERYTOSYMLINK 16 95 #define DBS_WRITEMAPTOHARDLINK 17 96 #define DBS_WRITEMAPTOSYMLINK 18 97 #define DBS_WRITESTATSTOHARDLINK 19 98 #define DBS_WRITESTATSTOSYMLINK 20 99 #define DBS_FORWARDFILEINGROUPWRITABLEDIRPATH 21 100 #define DBS_INCLUDEFILEINGROUPWRITABLEDIRPATH 22 101 #define DBS_CLASSFILEINUNSAFEDIRPATH 23 102 #define DBS_ERRORHEADERINUNSAFEDIRPATH 24 103 #define DBS_HELPFILEINUNSAFEDIRPATH 25 104 #define DBS_FORWARDFILEINUNSAFEDIRPATHSAFE 26 105 #define DBS_INCLUDEFILEINUNSAFEDIRPATHSAFE 27 106 #define DBS_RUNPROGRAMINUNSAFEDIRPATH 28 107 #define DBS_RUNWRITABLEPROGRAM 29 108 #define DBS_INCLUDEFILEINUNSAFEDIRPATH 30 109 #define DBS_NONROOTSAFEADDR 31 110 #define DBS_TRUSTSTICKYBIT 32 111 #define DBS_DONTWARNFORWARDFILEINUNSAFEDIRPATH 33 112 #define DBS_INSUFFICIENTENTROPY 34 113 #define DBS_GROUPREADABLESASLDBFILE 35 114 #define DBS_GROUPWRITABLESASLDBFILE 36 115 #define DBS_GROUPWRITABLEFORWARDFILE 37 116 #define DBS_GROUPWRITABLEINCLUDEFILE 38 117 #define DBS_WORLDWRITABLEFORWARDFILE 39 118 #define DBS_WORLDWRITABLEINCLUDEFILE 40 119 #define DBS_GROUPREADABLEKEYFILE 41 120 #if _FFR_GROUPREADABLEAUTHINFOFILE 121 # define DBS_GROUPREADABLEAUTHINFOFILE 42 122 #endif /* _FFR_GROUPREADABLEAUTHINFOFILE */ 123 124 /* struct defining such things */ 125 struct dbsval 126 { 127 char *dbs_name; /* name of DontBlameSendmail flag */ 128 unsigned char dbs_flag; /* numeric level */ 129 }; 130 131 /* Flags for submitmode */ 132 #define SUBMIT_UNKNOWN 0x0000 /* unknown agent type */ 133 #define SUBMIT_MTA 0x0001 /* act like a message transfer agent */ 134 #define SUBMIT_MSA 0x0002 /* act like a message submission agent */ 135 136