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Annotation of 42BSD/ucb/Mail/def.h, revision 1.1

1.1     ! root        1: /*     def.h   2.13    83/08/11        */
        !             2: 
        !             3: #include <sys/types.h>
        !             4: #include <signal.h>
        !             5: #include <stdio.h>
        !             6: #include <sgtty.h>
        !             7: #include "local.h"
        !             8: 
        !             9: #undef isalpha
        !            10: #undef isdigit
        !            11: 
        !            12: /*
        !            13:  * Mail -- a mail program
        !            14:  *
        !            15:  * Commands are:
        !            16:  *     t <message list>                print out these messages
        !            17:  *     r <message list>                reply to messages
        !            18:  *     m <user list>                   mail to users (analogous to send)
        !            19:  *     e <message list>                edit messages
        !            20:  *     c [directory]                   chdir to dir or home if none
        !            21:  *     x                               exit quickly
        !            22:  *     w <message list> file           save messages in file
        !            23:  *     q                               quit, save remaining stuff in mbox
        !            24:  *     d <message list>                delete messages
        !            25:  *     u <message list>                undelete messages
        !            26:  *     h                               print message headers
        !            27:  *
        !            28:  * Author: Kurt Shoens (UCB) March 25, 1978
        !            29:  */
        !            30: 
        !            31: 
        !            32: #define        ESCAPE          '~'             /* Default escape for sending */
        !            33: #define        NMLSIZE         20              /* max names in a message list */
        !            34: #define        PATHSIZE        100             /* Size of pathnames throughout */
        !            35: #define        NAMESIZE        20              /* Max size of user name */
        !            36: #define        HSHSIZE         19              /* Hash size for aliases and vars */
        !            37: #define        HDRFIELDS       3               /* Number of header fields */
        !            38: #define        LINESIZE        BUFSIZ          /* max readable line width */
        !            39: #define        STRINGSIZE      ((unsigned) 128)/* Dynamic allocation units */
        !            40: #define        MAXARGC         20              /* Maximum list of raw strings */
        !            41: #define        NOSTR           ((char *) 0)    /* Null string pointer */
        !            42: #define        MAXEXP          25              /* Maximum expansion of aliases */
        !            43: #define        equal(a, b)     (strcmp(a,b)==0)/* A nice function to string compare */
        !            44: 
        !            45: struct message {
        !            46:        short   m_flag;                 /* flags, see below */
        !            47:        short   m_block;                /* block number of this message */
        !            48:        short   m_offset;               /* offset in block of message */
        !            49:        long    m_size;                 /* Bytes in the message */
        !            50:        short   m_lines;                /* Lines in the message */
        !            51: };
        !            52: 
        !            53: /*
        !            54:  * flag bits.
        !            55:  */
        !            56: 
        !            57: #define        MUSED           (1<<0)          /* entry is used, but this bit isn't */
        !            58: #define        MDELETED        (1<<1)          /* entry has been deleted */
        !            59: #define        MSAVED          (1<<2)          /* entry has been saved */
        !            60: #define        MTOUCH          (1<<3)          /* entry has been noticed */
        !            61: #define        MPRESERVE       (1<<4)          /* keep entry in sys mailbox */
        !            62: #define        MMARK           (1<<5)          /* message is marked! */
        !            63: #define        MODIFY          (1<<6)          /* message has been modified */
        !            64: #define        MNEW            (1<<7)          /* message has never been seen */
        !            65: #define        MREAD           (1<<8)          /* message has been read sometime. */
        !            66: #define        MSTATUS         (1<<9)          /* message status has changed */
        !            67: #define        MBOX            (1<<10)         /* Send this to mbox, regardless */
        !            68: 
        !            69: /*
        !            70:  * Format of the command description table.
        !            71:  * The actual table is declared and initialized
        !            72:  * in lex.c
        !            73:  */
        !            74: 
        !            75: struct cmd {
        !            76:        char    *c_name;                /* Name of command */
        !            77:        int     (*c_func)();            /* Implementor of the command */
        !            78:        short   c_argtype;              /* Type of arglist (see below) */
        !            79:        short   c_msgflag;              /* Required flags of messages */
        !            80:        short   c_msgmask;              /* Relevant flags of messages */
        !            81: };
        !            82: 
        !            83: /* Yechh, can't initialize unions */
        !            84: 
        !            85: #define        c_minargs c_msgflag             /* Minimum argcount for RAWLIST */
        !            86: #define        c_maxargs c_msgmask             /* Max argcount for RAWLIST */
        !            87: 
        !            88: /*
        !            89:  * Argument types.
        !            90:  */
        !            91: 
        !            92: #define        MSGLIST  0              /* Message list type */
        !            93: #define        STRLIST  1              /* A pure string */
        !            94: #define        RAWLIST  2              /* Shell string list */
        !            95: #define        NOLIST   3              /* Just plain 0 */
        !            96: #define        NDMLIST  4              /* Message list, no defaults */
        !            97: 
        !            98: #define        P       040             /* Autoprint dot after command */
        !            99: #define        I       0100            /* Interactive command bit */
        !           100: #define        M       0200            /* Legal from send mode bit */
        !           101: #define        W       0400            /* Illegal when read only bit */
        !           102: #define        F       01000           /* Is a conditional command */
        !           103: #define        T       02000           /* Is a transparent command */
        !           104: #define        R       04000           /* Cannot be called from collect */
        !           105: 
        !           106: /*
        !           107:  * Oft-used mask values
        !           108:  */
        !           109: 
        !           110: #define        MMNORM          (MDELETED|MSAVED)/* Look at both save and delete bits */
        !           111: #define        MMNDEL          MDELETED        /* Look only at deleted bit */
        !           112: 
        !           113: /*
        !           114:  * Structure used to return a break down of a head
        !           115:  * line (hats off to Bill Joy!)
        !           116:  */
        !           117: 
        !           118: struct headline {
        !           119:        char    *l_from;        /* The name of the sender */
        !           120:        char    *l_tty;         /* His tty string (if any) */
        !           121:        char    *l_date;        /* The entire date string */
        !           122: };
        !           123: 
        !           124: #define        GTO     1               /* Grab To: line */
        !           125: #define        GSUBJECT 2              /* Likewise, Subject: line */
        !           126: #define        GCC     4               /* And the Cc: line */
        !           127: #define        GBCC    8               /* And also the Bcc: line */
        !           128: #define        GMASK   (GTO|GSUBJECT|GCC|GBCC)
        !           129:                                /* Mask of places from whence */
        !           130: 
        !           131: #define        GNL     16              /* Print blank line after */
        !           132: #define        GDEL    32              /* Entity removed from list */
        !           133: #define        GCOMMA  64              /* detract puts in commas */
        !           134: 
        !           135: /*
        !           136:  * Structure used to pass about the current
        !           137:  * state of the user-typed message header.
        !           138:  */
        !           139: 
        !           140: struct header {
        !           141:        char    *h_to;                  /* Dynamic "To:" string */
        !           142:        char    *h_subject;             /* Subject string */
        !           143:        char    *h_cc;                  /* Carbon copies string */
        !           144:        char    *h_bcc;                 /* Blind carbon copies */
        !           145:        int     h_seq;                  /* Sequence for optimization */
        !           146: };
        !           147: 
        !           148: /*
        !           149:  * Structure of namelist nodes used in processing
        !           150:  * the recipients of mail and aliases and all that
        !           151:  * kind of stuff.
        !           152:  */
        !           153: 
        !           154: struct name {
        !           155:        struct  name *n_flink;          /* Forward link in list. */
        !           156:        struct  name *n_blink;          /* Backward list link */
        !           157:        short   n_type;                 /* From which list it came */
        !           158:        char    *n_name;                /* This fella's name */
        !           159: };
        !           160: 
        !           161: /*
        !           162:  * Structure of a variable node.  All variables are
        !           163:  * kept on a singly-linked list of these, rooted by
        !           164:  * "variables"
        !           165:  */
        !           166: 
        !           167: struct var {
        !           168:        struct  var *v_link;            /* Forward link to next variable */
        !           169:        char    *v_name;                /* The variable's name */
        !           170:        char    *v_value;               /* And it's current value */
        !           171: };
        !           172: 
        !           173: struct group {
        !           174:        struct  group *ge_link;         /* Next person in this group */
        !           175:        char    *ge_name;               /* This person's user name */
        !           176: };
        !           177: 
        !           178: struct grouphead {
        !           179:        struct  grouphead *g_link;      /* Next grouphead in list */
        !           180:        char    *g_name;                /* Name of this group */
        !           181:        struct  group *g_list;          /* Users in group. */
        !           182: };
        !           183: 
        !           184: #define        NIL     ((struct name *) 0)     /* The nil pointer for namelists */
        !           185: #define        NONE    ((struct cmd *) 0)      /* The nil pointer to command tab */
        !           186: #define        NOVAR   ((struct var *) 0)      /* The nil pointer to variables */
        !           187: #define        NOGRP   ((struct grouphead *) 0)/* The nil grouphead pointer */
        !           188: #define        NOGE    ((struct group *) 0)    /* The nil group pointer */
        !           189: 
        !           190: /*
        !           191:  * Structure of the hash table of ignored header fields
        !           192:  */
        !           193: struct ignore {
        !           194:        struct ignore   *i_link;        /* Next ignored field in bucket */
        !           195:        char            *i_field;       /* This ignored field */
        !           196: };
        !           197: 
        !           198: /*
        !           199:  * Token values returned by the scanner used for argument lists.
        !           200:  * Also, sizes of scanner-related things.
        !           201:  */
        !           202: 
        !           203: #define        TEOL    0                       /* End of the command line */
        !           204: #define        TNUMBER 1                       /* A message number */
        !           205: #define        TDASH   2                       /* A simple dash */
        !           206: #define        TSTRING 3                       /* A string (possibly containing -) */
        !           207: #define        TDOT    4                       /* A "." */
        !           208: #define        TUP     5                       /* An "^" */
        !           209: #define        TDOLLAR 6                       /* A "$" */
        !           210: #define        TSTAR   7                       /* A "*" */
        !           211: #define        TOPEN   8                       /* An '(' */
        !           212: #define        TCLOSE  9                       /* A ')' */
        !           213: #define TPLUS  10                      /* A '+' */
        !           214: 
        !           215: #define        REGDEP  2                       /* Maximum regret depth. */
        !           216: #define        STRINGLEN       64              /* Maximum length of string token */
        !           217: 
        !           218: /*
        !           219:  * Constants for conditional commands.  These describe whether
        !           220:  * we should be executing stuff or not.
        !           221:  */
        !           222: 
        !           223: #define        CANY            0               /* Execute in send or receive mode */
        !           224: #define        CRCV            1               /* Execute in receive mode only */
        !           225: #define        CSEND           2               /* Execute in send mode only */
        !           226: 
        !           227: /*
        !           228:  * Kludges to handle the change from setexit / reset to setjmp / longjmp
        !           229:  */
        !           230: 
        !           231: #define        setexit()       setjmp(srbuf)
        !           232: #define        reset(x)        longjmp(srbuf, x)
        !           233: 
        !           234: /*
        !           235:  * VM/UNIX has a vfork system call which is faster than forking.  If we
        !           236:  * don't have it, fork(2) will do . . .
        !           237:  */
        !           238: 
        !           239: #ifndef VMUNIX
        !           240: #define        vfork() fork()
        !           241: #endif
        !           242: #ifndef        SIGRETRO
        !           243: #define        sigchild()
        !           244: #endif
        !           245: 
        !           246: /*
        !           247:  * 4.2bsd signal interface help...
        !           248:  */
        !           249: #ifdef VMUNIX
        !           250: #define        sigset(s, a)    signal(s, a)
        !           251: #define        mask(s)         (1 << ((s) - 1))
        !           252: #define        sigsys(s, a)    signal(s, a)
        !           253: #endif
        !           254: 
        !           255: /*
        !           256:  * Truncate a file to the last character written. This is
        !           257:  * useful just before closing an old file that was opened
        !           258:  * for read/write.
        !           259:  */
        !           260: #define trunc(stream)  ftruncate(fileno(stream), (long) ftell(stream))
        !           261: 
        !           262: /*
        !           263:  * Forward declarations of routine types to keep lint and cc happy.
        !           264:  */
        !           265: 
        !           266: FILE   *Fdopen();
        !           267: FILE   *collect();
        !           268: FILE   *infix();
        !           269: FILE   *mesedit();
        !           270: FILE   *mespipe();
        !           271: FILE   *popen();
        !           272: FILE   *setinput();
        !           273: char   **unpack();
        !           274: char   *addto();
        !           275: char   *arpafix();
        !           276: char   *calloc();
        !           277: char   *copy();
        !           278: char   *copyin();
        !           279: char   *detract();
        !           280: char   *expand();
        !           281: char   *gets();
        !           282: char   *hfield();
        !           283: char   *index();
        !           284: char   *name1();
        !           285: char   *nameof();
        !           286: char   *nextword();
        !           287: char   *getenv();
        !           288: char   *getfilename();
        !           289: char   *hcontents();
        !           290: char   *netmap();
        !           291: char   *netname();
        !           292: char   *readtty();
        !           293: char   *reedit();
        !           294: char   *rename();
        !           295: char   *revarpa();
        !           296: char   *rindex();
        !           297: char   *rpair();
        !           298: char   *salloc();
        !           299: char   *savestr();
        !           300: char   *skin();
        !           301: char   *snarf();
        !           302: char   *strcat();
        !           303: char   *strcpy();
        !           304: char   *value();
        !           305: char   *vcopy();
        !           306: char   *yankword();
        !           307: off_t  fsize();
        !           308: #ifndef VMUNIX
        !           309: int    (*sigset())();
        !           310: #endif
        !           311: struct cmd     *lex();
        !           312: struct grouphead       *findgroup();
        !           313: struct name    *cat();
        !           314: struct name    *delname();
        !           315: struct name    *elide();
        !           316: struct name    *extract();
        !           317: struct name    *gexpand();
        !           318: struct name    *map();
        !           319: struct name    *outof();
        !           320: struct name    *put();
        !           321: struct name    *usermap();
        !           322: struct name    *verify();
        !           323: struct var     *lookup();
        !           324: long   transmit();
        !           325: int    icequal();
        !           326: int    cmpdomain();

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