2 ** mh.h -- main header file for all of nmh
10 #define NOTOK (-1) /* syscall()s return this on error */
11 #define OK 0 /* ditto on success */
12 #define DONE 1 /* trinary logic */
14 #define Nbby 8 /* number of bits/byte */
16 #define MAXARGS 1000 /* max arguments to exec */
17 #define NFOLDERS 1000 /* max folder arguments on command line */
18 #define DMAXFOLDER 4 /* typical number of digits */
19 #define MAXFOLDER 1000 /* message increment */
27 typedef unsigned char boolean; /* not int so we can pack in a structure */
29 /* If we're using gcc then give it some information about
30 ** functions that abort.
33 # define NORETURN __attribute__((__noreturn__))
39 ** user context/profile structure
42 char *n_name; /* key */
43 char *n_field; /* value */
44 char n_context; /* context, not profile */
45 struct node *n_next; /* next entry */
51 #define AMBIGSW (-2) /* from smatch() on ambiguous switch */
52 #define UNKWNSW (-1) /* from smatch() on unknown switch */
57 ** The minchars field is apparently used like this:
59 ** -# : Switch can be abbreviated to # chars; switch hidden in -help.
60 ** 0 : Switch can't be abbreviated; switch shown in -help.
61 ** # : Switch can be abbreviated to # chars; switch shown in -help.
66 extern struct swit anoyes[]; /* standard yes/no switches */
68 #define ATTACHFORMATS 3 /* Number of send attach formats. */
71 ** general folder attributes
73 #define READONLY (1<<0) /* No write access to folder */
74 #define SEQMOD (1<<1) /* folder's sequences modifed */
75 #define ALLOW_NEW (1<<2) /* allow the "new" sequence */
76 #define OTHERS (1<<3) /* folder has other files */
78 #define FBITS "\020\01READONLY\02SEQMOD\03ALLOW_NEW\04OTHERS"
81 ** type for holding the sequence set of a message
83 typedef unsigned int seqset_t;
86 ** Determine the number of user defined sequences we
87 ** can have. The first 5 sequence flags are for
88 ** internal nmh message flags.
90 #define NUMATTRS ((sizeof(seqset_t) * Nbby) - 5)
93 ** first free slot for user defined sequences
99 ** internal messages attributes (sequences)
101 #define EXISTS (1<<0) /* exists */
102 #define DELETED (1<<1) /* deleted */
103 #define SELECTED (1<<2) /* selected for use */
104 #define SELECT_EMPTY (1<<3) /* "new" message */
105 #define SELECT_UNSEEN (1<<4) /* inc/show "unseen" */
107 #define MBITS "\020\01EXISTS\02DELETED\03SELECTED\04NEW\05UNSEEN"
110 ** Primary structure of folder/message information
113 int lowmsg; /* Lowest msg number */
114 int hghmsg; /* Highest msg number */
115 int nummsg; /* Actual Number of msgs */
117 int lowsel; /* Lowest selected msg number */
118 int hghsel; /* Highest selected msg number */
119 int numsel; /* Number of msgs selected */
121 int curmsg; /* Number of current msg if any */
123 int msgflags; /* Folder attributes (READONLY, etc) */
124 char *foldpath; /* Pathname of folder */
127 ** Name of sequences in this folder. We add an
128 ** extra slot, so we can NULL terminate the list.
130 char *msgattrs[NUMATTRS + 1];
133 ** bit flags for whether sequence
134 ** is public (0), or private (1)
139 ** These represent the lowest and highest possible
140 ** message numbers we can put in the message status
141 ** area, without calling folder_realloc().
147 ** This is an array of seqset_t which we allocate dynamically.
148 ** Each seqset_t is a set of bits flags for a particular message.
149 ** These bit flags represent general attributes such as
150 ** EXISTS, SELECTED, etc. as well as track if message is
151 ** in a particular sequence.
153 seqset_t *msgstats; /* msg status */
157 ** Amount of space to allocate for msgstats. Allocate
158 ** the array to have space for messages numbers lo to hi.
160 #define MSGSTATSIZE(mp,lo,hi) ((size_t) (((hi) - (lo) + 1) * sizeof(*(mp)->msgstats)))
163 ** macros for message and sequence manipulation
165 #define clear_msg_flags(mp,msgnum) ((mp)->msgstats[(msgnum) - mp->lowoff] = 0)
166 #define copy_msg_flags(mp,i,j) \
167 ((mp)->msgstats[(i) - mp->lowoff] = (mp)->msgstats[(j) - mp->lowoff])
168 #define get_msg_flags(mp,ptr,msgnum) (*(ptr) = (mp)->msgstats[(msgnum) - mp->lowoff])
169 #define set_msg_flags(mp,ptr,msgnum) ((mp)->msgstats[(msgnum) - mp->lowoff] = *(ptr))
171 #define does_exist(mp,msgnum) ((mp)->msgstats[(msgnum) - mp->lowoff] & EXISTS)
172 #define unset_exists(mp,msgnum) ((mp)->msgstats[(msgnum) - mp->lowoff] &= ~EXISTS)
173 #define set_exists(mp,msgnum) ((mp)->msgstats[(msgnum) - mp->lowoff] |= EXISTS)
175 #define is_selected(mp,msgnum) ((mp)->msgstats[(msgnum) - mp->lowoff] & SELECTED)
176 #define unset_selected(mp,msgnum) ((mp)->msgstats[(msgnum) - mp->lowoff] &= ~SELECTED)
177 #define set_selected(mp,msgnum) ((mp)->msgstats[(msgnum) - mp->lowoff] |= SELECTED)
179 #define is_select_empty(mp,msgnum) ((mp)->msgstats[(msgnum) - mp->lowoff] & SELECT_EMPTY)
180 #define set_select_empty(mp,msgnum) \
181 ((mp)->msgstats[(msgnum) - mp->lowoff] |= SELECT_EMPTY)
183 #define is_unseen(mp,msgnum) ((mp)->msgstats[(msgnum) - mp->lowoff] & SELECT_UNSEEN)
184 #define unset_unseen(mp,msgnum) ((mp)->msgstats[(msgnum) - mp->lowoff] &= ~SELECT_UNSEEN)
185 #define set_unseen(mp,msgnum) ((mp)->msgstats[(msgnum) - mp->lowoff] |= SELECT_UNSEEN)
188 #define in_sequence(mp,seqnum,msgnum) \
189 ((mp)->msgstats[(msgnum) - mp->lowoff] & (1 << (FFATTRSLOT + seqnum)))
190 #define clear_sequence(mp,seqnum,msgnum) \
191 ((mp)->msgstats[(msgnum) - mp->lowoff] &= ~(1 << (FFATTRSLOT + seqnum)))
192 #define add_sequence(mp,seqnum,msgnum) \
193 ((mp)->msgstats[(msgnum) - mp->lowoff] |= (1 << (FFATTRSLOT + seqnum)))
195 #define is_seq_private(mp,seqnum) \
196 ((mp)->attrstats & (1 << (FFATTRSLOT + seqnum)))
197 #define make_seq_public(mp,seqnum) \
198 ((mp)->attrstats &= ~(1 << (FFATTRSLOT + seqnum)))
199 #define make_seq_private(mp,seqnum) \
200 ((mp)->attrstats |= (1 << (FFATTRSLOT + seqnum)))
201 #define make_all_public(mp) \
202 ((mp)->attrstats = 0)
205 ** macros for folder attributes
207 #define clear_folder_flags(mp) ((mp)->msgflags = 0)
209 #define is_readonly(mp) ((mp)->msgflags & READONLY)
210 #define set_readonly(mp) ((mp)->msgflags |= READONLY)
212 #define other_files(mp) ((mp)->msgflags & OTHERS)
213 #define set_other_files(mp) ((mp)->msgflags |= OTHERS)
215 #define NULLMP ((struct msgs *) 0)
218 ** m_getfld() message parsing
221 #define NAMESZ 999 /*
222 ** Limit on component name size.
223 ** RFC 2822 limits line lengths to
224 ** 998 characters, so a header name
225 ** can be at most that long.
226 ** m_getfld limits header names to 2
227 ** less than NAMESZ, which is fine,
228 ** because header names must be
229 ** followed by a colon. Add one for
233 #define LENERR (-2) /* Name too long error from getfld */
234 #define FMTERR (-3) /* Message Format error */
235 #define FLD 0 /* Field returned */
236 #define FLDPLUS 1 /* Field returned with more to come */
237 #define FLDEOF 2 /* Field returned ending at eom */
238 #define BODY 3 /* Body returned with more to come */
239 #define BODYEOF 4 /* Body returned ending at eom */
240 #define FILEEOF 5 /* Reached end of input file */
245 #define MS_DEFAULT 0 /* default (one msg per file) */
246 #define MS_UNKNOWN 1 /* type not known yet */
247 #define MS_MBOX 2 /* Unix-style "from" lines */
248 #define MS_MMDF 3 /* string mmdlm2 */
250 extern int msg_count; /* m_getfld() indicators */
251 extern int msg_style; /* .. */
252 extern char *msg_delim; /* .. */
254 #define NOUSE 0 /* draft being re-used */
256 #define OUTPUTLINELEN 72 /* default line length for headers */
259 ** miscellaneous macros
262 #define pidXwait(pid,cp) pidstatus(pidwait(pid, NOTOK), stdout, cp)
265 # define max(a,b) ((a) > (b) ? (a) : (b))
269 # define min(a,b) ((a) < (b) ? (a) : (b))
273 # define abs(a) ((a) > 0 ? (a) : -(a))
279 #define CTXMOD 0x01 /* context information modified */
280 #define DBITS "\020\01CTXMOD"
281 extern char ctxflags;
283 extern char *invo_name; /* command invocation name */
284 extern char *mypath; /* user's $HOME */
286 extern char *mmhpath;
287 extern char *defpath; /* pathname of user's profile */
288 extern char *ctxpath; /* pathname of user's context */
289 extern struct node *m_defs; /* list of profile/context entries */
290 extern char *mailstore; /* name of mail storage directory */
293 ** These standard strings are defined in config.c. They are the
294 ** only system-dependent parameters in nmh, and thus by redefining
295 ** their values and reloading the various modules, nmh will run
298 extern char *buildmimeproc;
299 extern char *backup_prefix;
300 extern char *altmsglink;
301 extern char *catproc;
302 extern char *components;
303 extern char *context;
304 extern char *curfolder;
305 extern char *current;
306 extern char *defaulteditor;
307 extern char *defaultfolder;
308 extern char *digestcomps;
309 extern char *distcomps;
310 extern char *draftfolder;
311 extern char *fileproc;
312 extern char *foldprot;
313 extern char *forwcomps;
315 extern char *incproc;
317 extern char *mhetcdir;
318 extern char *mailproc;
320 extern char *mhlformat;
321 extern char *mhlforward;
322 extern char *mhlproc;
323 extern char *mhlreply;
324 extern char *moreproc;
325 extern char *msgprot;
326 extern char *nmhaccessftp;
327 extern char *nmhstorage;
328 extern char *nmhcache;
329 extern char *nmhprivcache;
330 extern char *nsequence;
331 extern char *postproc;
332 extern char *profile;
333 extern char *psequence;
334 extern char *rcvdistcomps;
335 extern char *rcvstoreproc;
336 extern char *replcomps;
337 extern char *replgroupcomps;
338 extern char *rmmproc;
339 extern char *sendmail;
340 extern char *sendproc;
341 extern char *showmimeproc;
342 extern char *showproc;
343 extern char *usequence;
344 extern char *version_num;
345 extern char *version_str;
346 extern char *whatnowproc;
348 extern void (*done) (int) NORETURN;
350 #include <h/prototypes.h>