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31 * @(#)def.h 8.4 (Berkeley) 4/20/95
37 * Mail -- a mail program
39 * Author: Kurt Shoens (UCB) March 25, 1978
42 #include <sys/param.h>
56 #include "pathnames.h"
58 #define APPEND /* New mail goes to end of mailbox */
60 #define ESCAPE '~' /* Default escape for sending */
61 #define NMLSIZE 1024 /* max names in a message list */
62 #define PATHSIZE MAXPATHLEN /* Size of pathnames throughout */
63 #define HSHSIZE 59 /* Hash size for aliases and vars */
64 #define LINESIZE BUFSIZ /* max readable line width */
65 #define STRINGSIZE ((unsigned)128) /* Dynamic allocation units */
66 #define MAXARGC 1024 /* Maximum list of raw strings */
67 #define MAXEXP 25 /* Maximum expansion of aliases */
69 #define equal(a, b) (strcmp(a,b)==0)/* A nice function to string compare */
72 short m_flag; /* flags, see below */
73 short m_offset; /* offset in block of message */
74 long m_block; /* block number of this message */
75 long m_size; /* Bytes in the message */
76 long m_lines; /* Lines in the message */
83 #define MUSED (1<<0) /* entry is used, but this bit isn't */
84 #define MDELETED (1<<1) /* entry has been deleted */
85 #define MSAVED (1<<2) /* entry has been saved */
86 #define MTOUCH (1<<3) /* entry has been noticed */
87 #define MPRESERVE (1<<4) /* keep entry in sys mailbox */
88 #define MMARK (1<<5) /* message is marked! */
89 #define MODIFY (1<<6) /* message has been modified */
90 #define MNEW (1<<7) /* message has never been seen */
91 #define MREAD (1<<8) /* message has been read sometime. */
92 #define MSTATUS (1<<9) /* message status has changed */
93 #define MBOX (1<<10) /* Send this to mbox, regardless */
96 * Given a file address, determine the block number it represents.
98 #define blockof(off) ((int)((off) / 4096))
99 #define boffsetof(off) ((int)((off) % 4096))
100 #define positionof(block, offset) ((off_t)(block) * 4096 + (offset))
103 * Format of the command description table.
104 * The actual table is declared and initialized
108 const char *c_name; /* Name of command */
109 int (*c_func)(); /* Implementor of the command */
110 short c_argtype; /* Type of arglist (see below) */
111 short c_msgflag; /* Required flags of messages */
112 short c_msgmask; /* Relevant flags of messages */
115 /* Yechh, can't initialize unions */
117 #define c_minargs c_msgflag /* Minimum argcount for RAWLIST */
118 #define c_maxargs c_msgmask /* Max argcount for RAWLIST */
124 #define MSGLIST 0 /* Message list type */
125 #define STRLIST 1 /* A pure string */
126 #define RAWLIST 2 /* Shell string list */
127 #define NOLIST 3 /* Just plain 0 */
128 #define NDMLIST 4 /* Message list, no defaults */
130 #define P 040 /* Autoprint dot after command */
131 #define I 0100 /* Interactive command bit */
132 #define M 0200 /* Legal from send mode bit */
133 #define W 0400 /* Illegal when read only bit */
134 #define F 01000 /* Is a conditional command */
135 #define T 02000 /* Is a transparent command */
136 #define R 04000 /* Cannot be called from collect */
139 * Oft-used mask values
142 #define MMNORM (MDELETED|MSAVED)/* Look at both save and delete bits */
143 #define MMNDEL MDELETED /* Look only at deleted bit */
146 * Structure used to return a break down of a head
147 * line (hats off to Bill Joy!)
151 char *l_from; /* The name of the sender */
152 char *l_tty; /* His tty string (if any) */
153 char *l_date; /* The entire date string */
156 #define GTO 1 /* Grab To: line */
157 #define GSUBJECT 2 /* Likewise, Subject: line */
158 #define GCC 4 /* And the Cc: line */
159 #define GBCC 8 /* And also the Bcc: line */
160 #define GREPLYTO 0x10 /* And the Reply-To: line */
161 #define GINREPLYTO 0x20 /* The In-Reply-To: line */
162 #define GMASK (GTO|GSUBJECT|GCC|GBCC|GREPLYTO|GINREPLYTO)
163 /* Mask of places from whence */
165 #define GNL 0x40 /* Print blank line after */
166 #define GDEL 0x80 /* Entity removed from list */
167 #define GCOMMA 0x100 /* detract puts in commas */
170 * Structure used to pass about the current
171 * state of the user-typed message header.
175 struct name *h_bcc; /* Blind carbon copies */
176 struct name *h_cc; /* Carbon copies string */
177 struct name *h_smopts; /* Sendmail options */
178 struct name *h_to; /* Dynamic "To:" string */
179 char *h_inreplyto; /* Reference */
180 char *h_replyto; /* Reply address */
181 char *h_subject; /* Subject string */
185 * Structure of namelist nodes used in processing
186 * the recipients of mail and aliases and all that
191 struct name *n_flink; /* Forward link in list. */
192 struct name *n_blink; /* Backward list link */
193 short n_type; /* From which list it came */
194 char *n_name; /* This fella's name */
198 * Structure of a variable node. All variables are
199 * kept on a singly-linked list of these, rooted by
204 struct var *v_link; /* Forward link to next variable */
205 char *v_name; /* The variable's name */
206 char *v_value; /* And it's current value */
210 struct group *ge_link; /* Next person in this group */
211 char *ge_name; /* This person's user name */
215 struct grouphead *g_link; /* Next grouphead in list */
216 char *g_name; /* Name of this group */
217 struct group *g_list; /* Users in group. */
221 * Structure of the hash table of ignored header fields
224 int i_count; /* Number of entries */
226 struct ignore *i_link; /* Next ignored field in bucket */
227 char *i_field; /* This ignored field */
232 * Token values returned by the scanner used for argument lists.
233 * Also, sizes of scanner-related things.
236 #define TEOL 0 /* End of the command line */
237 #define TNUMBER 1 /* A message number */
238 #define TDASH 2 /* A simple dash */
239 #define TSTRING 3 /* A string (possibly containing -) */
240 #define TDOT 4 /* A "." */
241 #define TUP 5 /* An "^" */
242 #define TDOLLAR 6 /* A "$" */
243 #define TSTAR 7 /* A "*" */
244 #define TOPEN 8 /* An '(' */
245 #define TCLOSE 9 /* A ')' */
246 #define TPLUS 10 /* A '+' */
247 #define TERROR 11 /* A lexical error */
249 #define REGDEP 2 /* Maximum regret depth. */
250 #define STRINGLEN 1024 /* Maximum length of string token */
253 * Constants for conditional commands. These describe whether
254 * we should be executing stuff or not.
257 #define CANY 0 /* Execute in send or receive mode */
258 #define CRCV 1 /* Execute in receive mode only */
259 #define CSEND 2 /* Execute in send mode only */
262 * Kludges to handle the change from setexit / reset to setjmp / longjmp
265 #define setexit() setjmp(srbuf)
266 #define reset(x) longjmp(srbuf, x)
269 * Truncate a file to the last character written. This is
270 * useful just before closing an old file that was opened
273 #define trunc(stream) { \
274 (void)fflush(stream); \
275 (void)ftruncate(fileno(stream), ftello(stream)); \