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   1
   2 /*
   3  * mh.h -- main header file for all of nmh
   4  *
   5  * $Id$
   6  */
   7
   8 #include <h/nmh.h>
   9
  10 /*
  11  * Well-used constants
  12  */
  13 #define NOTOK        (-1)       /* syscall()s return this on error */
  14 #define OK             0        /*  ditto on success               */
  15 #define DONE           1        /* trinary logic                   */
  16 #define ALL           ""
  17 #define Nbby           8        /* number of bits/byte */
  18
  19 #define MAXARGS     1000        /* max arguments to exec                */
  20 #define NFOLDERS    1000        /* max folder arguments on command line */
  21 #define DMAXFOLDER     4        /* typical number of digits             */
  22 #define MAXFOLDER   1000        /* message increment                    */
  23
  24 #ifndef FALSE
  25 #define FALSE 0
  26 #endif
  27 #ifndef TRUE
  28 #define TRUE 1
  29 #endif
  30 typedef unsigned char  boolean;  /* not int so we can pack in a structure */
  31
  32 /*
  33  * user context/profile structure
  34  */
  35 struct node {
  36     char *n_name;               /* key                  */
  37     char *n_field;              /* value                */
  38     char  n_context;            /* context, not profile */
  39     struct node *n_next;        /* next entry           */
  40 };
  41
  42 /*
  43  * switches structure
  44  */
  45 #define AMBIGSW  (-2)   /* from smatch() on ambiguous switch */
  46 #define UNKWNSW  (-1)   /* from smatch() on unknown switch   */
  47
  48 struct swit {
  49     char *sw;
  50
  51     /* The minchars field is apparently used like this:
  52
  53        -# : Switch can be abbreviated to # characters; switch hidden in -help.
  54        0  : Switch can't be abbreviated;               switch shown in -help.
  55        #  : Switch can be abbreviated to # characters; switch shown in -help. */
  56     int minchars;
  57 };
  58
  59 extern struct swit anoyes[];    /* standard yes/no switches */
  60
  61 #define ATTACHFORMATS 3         /* Number of send attach formats. */
  62
  63 /*
  64  * general folder attributes
  65  */
  66 #define READONLY   (1<<0)       /* No write access to folder    */
  67 #define SEQMOD     (1<<1)       /* folder's sequences modifed   */
  68 #define ALLOW_NEW  (1<<2)       /* allow the "new" sequence     */
  69 #define OTHERS     (1<<3)       /* folder has other files       */
  70 #define MODIFIED   (1<<4)       /* msh in-core folder modified  */
  71
  72 #define FBITS "\020\01READONLY\02SEQMOD\03ALLOW_NEW\04OTHERS\05MODIFIED"
  73
  74 /*
  75  * type for holding the sequence set of a message
  76  */
  77 typedef unsigned int seqset_t;
  78
  79 /*
  80  * Determine the number of user defined sequences we
  81  * can have.  The first 5 sequence flags are for
  82  * internal nmh message flags.
  83  */
  84 #define NUMATTRS  ((sizeof(seqset_t) * Nbby) - 5)
  85
  86 /*
  87  * first free slot for user defined sequences
  88  * and attributes
  89  */
  90 #define FFATTRSLOT  5
  91
  92 /*
  93  * internal messages attributes (sequences)
  94  */
  95 #define EXISTS        (1<<0)    /* exists            */
  96 #define DELETED       (1<<1)    /* deleted           */
  97 #define SELECTED      (1<<2)    /* selected for use  */
  98 #define SELECT_EMPTY  (1<<3)    /* "new" message     */
  99 #define SELECT_UNSEEN (1<<4)    /* inc/show "unseen" */
 100
 101 #define MBITS "\020\01EXISTS\02DELETED\03SELECTED\04NEW\05UNSEEN"
 102
 103 /*
 104  * Primary structure of folder/message information
 105  */
 106 struct msgs {
 107     int lowmsg;         /* Lowest msg number                 */
 108     int hghmsg;         /* Highest msg number                */
 109     int nummsg;         /* Actual Number of msgs             */
 110
 111     int lowsel;         /* Lowest selected msg number        */
 112     int hghsel;         /* Highest selected msg number       */
 113     int numsel;         /* Number of msgs selected           */
 114
 115     int curmsg;         /* Number of current msg if any      */
 116
 117     int msgflags;       /* Folder attributes (READONLY, etc) */
 118     char *foldpath;     /* Pathname of folder                */
 119
 120     /*
 121      * Name of sequences in this folder.  We add an
 122      * extra slot, so we can NULL terminate the list.
 123      */
 124     char *msgattrs[NUMATTRS + 1];
 125
 126     /*
 127      * bit flags for whether sequence
 128      * is public (0), or private (1)
 129      */
 130     seqset_t attrstats;
 131
 132     /*
 133      * These represent the lowest and highest possible
 134      * message numbers we can put in the message status
 135      * area, without calling folder_realloc().
 136      */
 137     int lowoff;
 138     int hghoff;
 139
 140     /*
 141      * This is an array of seqset_t which we allocate dynamically.
 142      * Each seqset_t is a set of bits flags for a particular message.
 143      * These bit flags represent general attributes such as
 144      * EXISTS, SELECTED, etc. as well as track if message is
 145      * in a particular sequence.
 146      */
 147     seqset_t *msgstats;         /* msg status */
 148 };
 149
 150 /*
 151  * Amount of space to allocate for msgstats.  Allocate
 152  * the array to have space for messages numbers lo to hi.
 153  */
 154 #define MSGSTATSIZE(mp,lo,hi) ((size_t) (((hi) - (lo) + 1) * sizeof(*(mp)->msgstats)))
 155
 156 /*
 157  * macros for message and sequence manipulation
 158  */
 159 #define clear_msg_flags(mp,msgnum) ((mp)->msgstats[(msgnum) - mp->lowoff] = 0)
 160 #define copy_msg_flags(mp,i,j) \
 161         ((mp)->msgstats[(i) - mp->lowoff] = (mp)->msgstats[(j) - mp->lowoff])
 162 #define get_msg_flags(mp,ptr,msgnum)  (*(ptr) = (mp)->msgstats[(msgnum) - mp->lowoff])
 163 #define set_msg_flags(mp,ptr,msgnum)  ((mp)->msgstats[(msgnum) - mp->lowoff] = *(ptr))
 164
 165 #define does_exist(mp,msgnum)     ((mp)->msgstats[(msgnum) - mp->lowoff] & EXISTS)
 166 #define unset_exists(mp,msgnum)   ((mp)->msgstats[(msgnum) - mp->lowoff] &= ~EXISTS)
 167 #define set_exists(mp,msgnum)     ((mp)->msgstats[(msgnum) - mp->lowoff] |= EXISTS)
 168
 169 #define is_selected(mp,msgnum)    ((mp)->msgstats[(msgnum) - mp->lowoff] & SELECTED)
 170 #define unset_selected(mp,msgnum) ((mp)->msgstats[(msgnum) - mp->lowoff] &= ~SELECTED)
 171 #define set_selected(mp,msgnum)   ((mp)->msgstats[(msgnum) - mp->lowoff] |= SELECTED)
 172
 173 #define is_select_empty(mp,msgnum) ((mp)->msgstats[(msgnum) - mp->lowoff] & SELECT_EMPTY)
 174 #define set_select_empty(mp,msgnum) \
 175         ((mp)->msgstats[(msgnum) - mp->lowoff] |= SELECT_EMPTY)
 176
 177 #define is_unseen(mp,msgnum)      ((mp)->msgstats[(msgnum) - mp->lowoff] & SELECT_UNSEEN)
 178 #define unset_unseen(mp,msgnum)   ((mp)->msgstats[(msgnum) - mp->lowoff] &= ~SELECT_UNSEEN)
 179 #define set_unseen(mp,msgnum)     ((mp)->msgstats[(msgnum) - mp->lowoff] |= SELECT_UNSEEN)
 180
 181 /* for msh only */
 182 #define set_deleted(mp,msgnum)    ((mp)->msgstats[(msgnum) - mp->lowoff] |= DELETED)
 183
 184 #define in_sequence(mp,seqnum,msgnum) \
 185            ((mp)->msgstats[(msgnum) - mp->lowoff] & (1 << (FFATTRSLOT + seqnum)))
 186 #define clear_sequence(mp,seqnum,msgnum) \
 187            ((mp)->msgstats[(msgnum) - mp->lowoff] &= ~(1 << (FFATTRSLOT + seqnum)))
 188 #define add_sequence(mp,seqnum,msgnum) \
 189            ((mp)->msgstats[(msgnum) - mp->lowoff] |= (1 << (FFATTRSLOT + seqnum)))
 190
 191 #define is_seq_private(mp,seqnum) \
 192            ((mp)->attrstats & (1 << (FFATTRSLOT + seqnum)))
 193 #define make_seq_public(mp,seqnum) \
 194            ((mp)->attrstats &= ~(1 << (FFATTRSLOT + seqnum)))
 195 #define make_seq_private(mp,seqnum) \
 196            ((mp)->attrstats |= (1 << (FFATTRSLOT + seqnum)))
 197 #define make_all_public(mp) \
 198            ((mp)->attrstats = 0)
 199
 200 /*
 201  * macros for folder attributes
 202  */
 203 #define clear_folder_flags(mp) ((mp)->msgflags = 0)
 204
 205 #define is_readonly(mp)     ((mp)->msgflags & READONLY)
 206 #define set_readonly(mp)    ((mp)->msgflags |= READONLY)
 207
 208 #define other_files(mp)     ((mp)->msgflags & OTHERS)
 209 #define set_other_files(mp) ((mp)->msgflags |= OTHERS)
 210
 211 #define NULLMP  ((struct msgs *) 0)
 212
 213 /*
 214  * m_getfld() message parsing
 215  */
 216
 217 #define NAMESZ  128             /* Limit on component name size     */
 218
 219 #define LENERR  (-2)            /* Name too long error from getfld  */
 220 #define FMTERR  (-3)            /* Message Format error             */
 221 #define FLD      0              /* Field returned                   */
 222 #define FLDPLUS  1              /* Field returned with more to come */
 223 #define FLDEOF   2              /* Field returned ending at eom     */
 224 #define BODY     3              /* Body  returned with more to come */
 225 #define BODYEOF  4              /* Body  returned ending at eom     */
 226 #define FILEEOF  5              /* Reached end of input file        */
 227
 228 /*
 229  * Maildrop styles
 230  */
 231 #define MS_DEFAULT      0       /* default (one msg per file) */
 232 #define MS_UNKNOWN      1       /* type not known yet         */
 233 #define MS_MBOX         2       /* Unix-style "from" lines    */
 234 #define MS_MMDF         3       /* string mmdlm2              */
 235 #define MS_MSH          4       /* whacko msh                 */
 236
 237 extern int msg_count;           /* m_getfld() indicators */
 238 extern int msg_style;           /*  .. */
 239 extern char *msg_delim;         /*  .. */
 240
 241 #define NOUSE   0               /* draft being re-used */
 242
 243 #define TFOLDER 0               /* path() given a +folder */
 244 #define TFILE   1               /* path() given a file    */
 245 #define TSUBCWF 2               /* path() given a @folder */
 246
 247 #define OUTPUTLINELEN   72      /* default line length for headers */
 248
 249 /*
 250  * miscellaneous macros
 251  */
 252 #define pidXwait(pid,cp) pidstatus (pidwait (pid, NOTOK), stdout, cp)
 253
 254 #ifndef max
 255 # define max(a,b) ((a) > (b) ? (a) : (b))
 256 #endif
 257
 258 #ifndef min
 259 # define min(a,b) ((a) < (b) ? (a) : (b))
 260 #endif
 261
 262 #ifndef abs
 263 # define abs(a) ((a) > 0 ? (a) : -(a))
 264 #endif
 265
 266 /*
 267  * GLOBAL VARIABLES
 268  */
 269 #define CTXMOD  0x01            /* context information modified */
 270 #define DBITS   "\020\01CTXMOD"
 271 extern char ctxflags;
 272
 273 extern char *invo_name;         /* command invocation name         */
 274 extern char *mypath;            /* user's $HOME                    */
 275 extern char *defpath;           /* pathname of user's profile      */
 276 extern char *ctxpath;           /* pathname of user's context      */
 277 extern struct node *m_defs;     /* list of profile/context entries */
 278
 279 /*
 280  * These standard strings are defined in config.c.  They are the
 281  * only system-dependent parameters in nmh, and thus by redefining
 282  * their values and reloading the various modules, nmh will run
 283  * on any system.
 284  */
 285 extern char *buildmimeproc;
 286 extern char *catproc;
 287 extern char *components;
 288 extern char *context;
 289 extern char *current;
 290 extern char *defaulteditor;
 291 extern char *defaultfolder;
 292 extern char *digestcomps;
 293 extern char *distcomps;
 294 extern char *draft;
 295 extern char *faceproc;
 296 extern char *fileproc;
 297 extern char *foldprot;
 298 extern char *forwcomps;
 299 extern char *inbox;
 300 extern char *incproc;
 301 extern char *installproc;
 302 extern char *lproc;
 303 extern char *mailproc;
 304 extern char *mh_defaults;
 305 extern char *mh_profile;
 306 extern char *mh_seq;
 307 extern char *mhlformat;
 308 extern char *mhlforward;
 309 extern char *mhlproc;
 310 extern char *mhlreply;
 311 extern char *moreproc;
 312 extern char *msgprot;
 313 extern char *mshproc;
 314 extern char *nmhaccessftp;
 315 extern char *nmhstorage;
 316 extern char *nmhcache;
 317 extern char *nmhprivcache;
 318 extern char *nsequence;
 319 extern char *packproc;
 320 extern char *postproc;
 321 extern char *pfolder;
 322 extern char *psequence;
 323 extern char *rcvdistcomps;
 324 extern char *rcvstoreproc;
 325 extern char *replcomps;
 326 extern char *replgroupcomps;
 327 extern char *rmfproc;
 328 extern char *rmmproc;
 329 extern char *sendproc;
 330 extern char *showmimeproc;
 331 extern char *showproc;
 332 extern char *usequence;
 333 extern char *version_num;
 334 extern char *version_str;
 335 extern char *vmhproc;
 336 extern char *whatnowproc;
 337 extern char *whomproc;
 338
 339 #include <h/prototypes.h>
 340