1 /*
2 **  SENDMAIL.H -- Global definitions for sendmail.
3 **
4 **	@(#)sendmail.h	3.40	09/12/81
5 */
6 
7 
8 
9 # ifdef _DEFINE
10 # define EXTERN
11 # else  _DEFINE
12 # define EXTERN extern
13 # endif _DEFINE
14 
15 # include <stdio.h>
16 # include <ctype.h>
17 # include "useful.h"
18 
19 /*
20 **  Configuration constants.
21 **	There shouldn't be much need to change these....
22 */
23 
24 # define MAXLINE	256		/* max line length */
25 # define MAXNAME	128		/* max length of a name */
26 # define MAXFIELD	2500		/* max total length of a hdr field */
27 # define MAXPV		40		/* max # of parms to mailers */
28 # define MAXHOP		30		/* max value of HopCount */
29 # define MAXATOM	15		/* max atoms per address */
30 # define MAXMAILERS	10		/* maximum mailers known to system */
31 # define SPACESUB	('.'|0200)	/* substitution for <lwsp> */
32 
33 /* values for ArpaMode -- these are ordered!! */
34 # define ARPA_NONE	0	/* not in arpanet mode */
35 # define ARPA_OLD	1	/* in old arpanet mode */
36 # define ARPA_MAIL	2	/* in regular arpanet mail */
37 # define ARPA_FILE	3	/* reading over data connection */
38 
39 extern char	Arpa_Info[];	/* the message number for Arpanet info */
40 
41 
42 
43 
44 
45 
46 /*
47 **  Address structure.
48 **	Addresses are stored internally in this structure.
49 */
50 
51 struct address
52 {
53 	char		*q_paddr;	/* the printname for the address */
54 	char		*q_user;	/* user name */
55 	char		*q_host;	/* host name */
56 	short		q_mailer;	/* mailer to use */
57 	short		q_rmailer;	/* real mailer (before mapping) */
58 	u_short		q_flags;	/* status flags, see below */
59 	short		q_uid;		/* user-id of receiver (if known) */
60 	char		*q_home;	/* home dir (local mailer only) */
61 	struct address	*q_next;	/* chain */
62 };
63 
64 typedef struct address ADDRESS;
65 
66 # define QDONTSEND	000001	/* don't send to this address */
67 # define QBADADDR	000002	/* this address is verified bad */
68 
69 
70 
71 
72 
73 /*
74 **  Mailer definition structure.
75 **	Every mailer known to the system is declared in this
76 **	structure.  It defines the pathname of the mailer, some
77 **	flags associated with it, and the argument vector to
78 **	pass to it.  The flags are defined in conf.c
79 **
80 **	The host map is a list of lists of strings.  Within each
81 **	list, any host is mapped to the last host in the list.
82 **	This allows multiple names, as well as doing clever
83 **	mail grouping in point-to-point networks.  Note: this
84 **	is only used internally, so the apparent host is still
85 **	kept around.
86 **
87 **	The argument vector is expanded before actual use.  All
88 **	words except the first are passed through the macro
89 **	processor.
90 */
91 
92 struct mailer
93 {
94 	char	*m_name;	/* symbolic name of this mailer */
95 	char	*m_mailer;	/* pathname of the mailer to use */
96 	u_long	m_flags;	/* status flags, see below */
97 	short	m_badstat;	/* the status code to use on unknown error */
98 	char	*m_from;	/* pattern for From: header */
99 	char	**m_argv;	/* template argument vector */
100 	ADDRESS	*m_sendq;	/* list of addresses to send to */
101 };
102 
103 typedef struct mailer	MAILER;
104 
105 # define M_FOPT		000001	/* mailer takes picky -f flag */
106 # define M_ROPT		000002	/* mailer takes picky -r flag */
107 # define M_QUIET	000004	/* don't print error on bad status */
108 # define M_RESTR	000010	/* must be daemon to execute */
109 # define M_NHDR		000020	/* don't insert From line */
110 # define M_LOCAL	000040	/* delivery is to this host */
111 # define M_STRIPQ	000100	/* strip quote characters from user/host */
112 # define M_MUSER	000200	/* mailer can handle multiple users at once */
113 # define M_NEEDFROM	000400	/* need arpa-style From: line */
114 # define M_NEEDDATE	001000	/* need arpa-style Date: line */
115 # define M_MSGID	002000	/* need Message-Id: field */
116 # define M_USR_UPPER	010000	/* preserve user case distinction */
117 # define M_HST_UPPER	020000	/* preserve host case distinction */
118 # define M_FULLNAME	040000	/* want Full-Name field */
119 
120 # define M_ARPAFMT	(M_NEEDDATE|M_NEEDFROM|M_MSGID)
121 
122 EXTERN MAILER *Mailer[MAXMAILERS+1];
123 
124 /* special mailer numbers */
125 # define MN_LOCAL	0	/* local mailer */
126 # define MN_PROG	1	/* program mailer */
127 /* mailers from 2 on are arbitrary */
128 
129 
130 
131 /*
132 **  Header structure.
133 **	This structure is used internally to store header items.
134 */
135 
136 struct header
137 {
138 	char		*h_field;	/* the name of the field */
139 	char		*h_value;	/* the value of that field */
140 	struct header	*h_link;	/* the next header */
141 	u_short		h_flags;	/* status bits, see below */
142 	u_long		h_mflags;	/* m_flags bits needed */
143 };
144 
145 typedef struct header	HDR;
146 
147 EXTERN HDR	*Header;	/* head of header list */
148 
149 /*
150 **  Header information structure.
151 **	Defined in conf.c, this struct declares the header fields
152 **	that have some magic meaning.
153 */
154 
155 struct hdrinfo
156 {
157 	char	*hi_field;	/* the name of the field */
158 	u_short	hi_flags;	/* status bits, see below */
159 	u_short	hi_mflags;	/* m_flags needed for this field */
160 };
161 
162 extern struct hdrinfo	HdrInfo[];
163 
164 /* bits for h_flags and hi_flags */
165 # define H_EOH		00001	/* this field terminates header */
166 # define H_DEFAULT	00004	/* if another value is found, drop this */
167 # define H_USED		00010	/* indicates that this has been output */
168 # define H_CHECK	00020	/* check h_mflags against m_flags */
169 # define H_ACHECK	00040	/* ditto, but always (not just default) */
170 # define H_FORCE	00100	/* force this field, even if default */
171 # define H_ADDR		00200	/* this field contains addresses */
172 
173 
174 /*
175 **  Rewrite rules.
176 */
177 
178 struct rewrite
179 {
180 	char	**r_lhs;	/* pattern match */
181 	char	**r_rhs;	/* substitution value */
182 	struct rewrite	*r_next;/* next in chain */
183 };
184 
185 extern struct rewrite	*RewriteRules[];
186 
187 # define MATCHANY	'\020'	/* match one or more tokens */
188 # define MATCHONE	'\021'	/* match exactly one token */
189 # define MATCHCLASS	'\022'	/* match one token in a class */
190 
191 # define CANONNET	'\025'	/* canonical net, next token */
192 # define CANONHOST	'\026'	/* canonical host, next token */
193 # define CANONUSER	'\027'	/* canonical user, next N tokens */
194 
195 
196 
197 /*
198 **  Symbol table definitions
199 */
200 
201 struct symtab
202 {
203 	char		*s_name;	/* name to be entered */
204 	char		s_type;		/* general type (see below) */
205 	struct symtab	*s_next;	/* pointer to next in chain */
206 	union
207 	{
208 		long	sv_class;	/* bit-map of word classes */
209 		ADDRESS	*sv_addr;	/* pointer to address header */
210 		MAILER	*sv_mailer;	/* pointer to mailer */
211 		char	*sv_alias;	/* alias */
212 	}	s_value;
213 };
214 
215 typedef struct symtab	STAB;
216 
217 /* symbol types */
218 # define ST_UNDEF	0	/* undefined type */
219 # define ST_CLASS	1	/* class map */
220 # define ST_ADDRESS	2	/* an address in parsed format */
221 # define ST_MAILER	3	/* a mailer header */
222 # define ST_ALIAS	4	/* an alias */
223 
224 # define s_class	s_value.sv_class
225 # define s_addr		s_value.sv_addr
226 # define s_mailer	s_value.sv_mailer
227 # define s_alias	s_value.sv_alias
228 
229 extern STAB	*stab();
230 
231 /* opcodes to stab */
232 # define ST_FIND	0	/* find entry */
233 # define ST_ENTER	1	/* enter if not there */
234 
235 
236 
237 
238 /*
239 **  Statistics structure.
240 */
241 
242 struct statistics
243 {
244 	time_t	stat_itime;		/* file initialization time */
245 	short	stat_size;		/* size of this structure */
246 	long	stat_nf[MAXMAILERS];	/* # msgs from each mailer */
247 	long	stat_bf[MAXMAILERS];	/* kbytes from each mailer */
248 	long	stat_nt[MAXMAILERS];	/* # msgs to each mailer */
249 	long	stat_bt[MAXMAILERS];	/* kbytes to each mailer */
250 };
251 
252 EXTERN struct statistics	Stat;
253 extern long			kbytes();	/* for _bf, _bt */
254 
255 
256 
257 
258 /*
259 **  Global variables.
260 */
261 
262 EXTERN bool	FromFlag;	/* if set, "From" person is explicit */
263 EXTERN bool	MailBack;	/* mail back response on error */
264 EXTERN bool	BerkNet;	/* called from BerkNet */
265 EXTERN bool	WriteBack;	/* write back response on error */
266 EXTERN bool	NoAlias;	/* if set, don't do any aliasing */
267 EXTERN bool	ForceMail;	/* if set, mail even if already got a copy */
268 EXTERN bool	MeToo;		/* send to the sender also */
269 EXTERN bool	IgnrDot;	/* don't let dot end messages */
270 EXTERN bool	SaveFrom;	/* save leading "From" lines */
271 EXTERN bool	Verbose;	/* set if blow-by-blow desired */
272 EXTERN bool	GrabTo;		/* if set, get recipients from msg */
273 EXTERN bool	DontSend;	/* mark recipients as QDONTSEND */
274 EXTERN bool	NoReturn;	/* don't return letter to sender */
275 EXTERN int	OldUmask;	/* umask when sendmail starts up */
276 EXTERN int	Debug;		/* debugging level */
277 EXTERN int	Errors;		/* set if errors */
278 EXTERN int	ExitStat;	/* exit status code */
279 EXTERN int	ArpaMode;	/* ARPANET handling mode */
280 EXTERN long	MsgSize;	/* size of the message in bytes */
281 extern char	InFileName[];	/* input file name */
282 extern char	Transcript[];	/* the transcript file name */
283 EXTERN FILE	*TempFile;	/* mail temp file */
284 EXTERN ADDRESS	From;		/* the person it is from */
285 EXTERN char	*To;		/* the target person */
286 EXTERN int	HopCount;	/* hop count */
287 EXTERN long	CurTime;	/* time of this message */
288 EXTERN int	AliasLevel;	/* depth of aliasing */
289 EXTERN char	*OrigFrom;	/* the From: line read from the message */
290 EXTERN bool	SuprErrs;	/* set if we are suppressing errors */
291 EXTERN bool	HasXscrpt;	/* set if we have a transcript */
292 
293 
294 # include	<sysexits.h>
295 
296 # define setstat(s)		{ if (ExitStat == EX_OK) ExitStat = s; }
297 
298 
299 /* useful functions */
300 
301 extern char	*newstr();
302 extern ADDRESS	*parse();
303 extern char	*xalloc();
304 extern char	*expand();
305 extern bool	sameaddr();
306