Usenet 1994 October/usenetsourcesnewsgroupsinfomagicoctober1994disk2.iso/unix/volume22/elm2.3/part12

Text File | 1990-06-07 | 51KB | 1,737 lines

Subject:  v22i071:  ELM mail syste, release 2.3, Part12/26
Newsgroups: comp.sources.unix
Approved: [e-mail]
X-Checksum-Snefru: 38c20587 15f03fd8 537e0353 5b696aef

Submitted-by: Syd Weinstein <[e-mail]>
Posting-number: Volume 22, Issue 71
Archive-name: elm2.3/part12

---- Cut Here and unpack ----
#!/bin/sh
# this is part 12 of a multipart archive
# do not concatenate these parts, unpack them in order with /bin/sh
# file src/aliasdb.c continued
#
CurArch=12
if test ! -r s2_seq_.tmp
then echo "Please unpack part 1 first!"
     exit 1; fi
( read Scheck
  if test "$Scheck" != $CurArch
  then echo "Please unpack part $Scheck next!"
       exit 1;
  else exit 0; fi
) < s2_seq_.tmp || exit 1
echo "x - Continuing file src/aliasdb.c"
sed 's/^X//' << 'SHAR_EOF' >> src/aliasdb.c
X#ifndef USE_DBM
X      get_connections();
X      open_domain_file();
X#endif
X      init_findnode();
X      clear_error();
X          findnode_has_been_initialized = TRUE;
X    }
X
X    strcpy(old_name, name);        /* save what we were given */
X
X    if (expand_site(name, address) == -1) {
X          if (display_error && name[0] != '!') {
X        dprint(3, (debugfile, "Couldn't expand host %s in address.\n",
X                 name));
X        if (! check_only && warnings) {
X          error1("Couldn't expand system %s.", name);
X          sleep(1);
X        }
X      }
X      strcpy(name, old_name);    /* and restore... */
X    }
X    else
X      strcpy(name, address);
X#endif
X    return;
X}
X
X#if defined(OPTIMIZE_RETURN) || !defined(DONT_TOUCH_ADDRESSES)
Xint
Xexpand_site(cryptic, expanded)
Xchar *cryptic, *expanded;
X{
X
X    /** Given an address of the form 'xyz@site' or 'site!xyz'
X        return an address of the form <expanded address for site>
X            with 'xyz' embedded according to the path database entry.
X        Note that 'xyz' can be eiher a simple address (as in "joe")
X        or a complex address (as in "[e-mail]")!
X        0 = found, -1 return means unknown site code
X
X        Modified to strip out parenthetical comments...
X    **/
X
X#ifdef ACSNET
X
X    strcpy(expanded, cryptic);    /* fast and simple */
X    return(0);
X
X#else
X# ifdef USE_DBM
X    datum  key, contents;
X# endif
X
X    char   name[VERY_LONG_STRING], sitename[VERY_LONG_STRING],
X               temp[VERY_LONG_STRING], old_name[VERY_LONG_STRING],
X           comment[LONG_STRING];
X    char   *expand_domain(), *addr;
X    register int i = 0, j = 0, in_parens = 0, domain_name;
X
X    strcpy(old_name, cryptic);    /* remember what we were given */
X
X    /** break down **/
X
X    /** first, rip out the comment, if any, noting nested parens **/
X
X    if ((i = chloc(cryptic, '(')) > -1) {
X      comment[j++] = ' ';            /* leading space */
X      do {
X          switch(comment[j++] = cryptic[i++]) {
X        case '(':    in_parens++;
X            break;
X        case ')':    in_parens--;
X            break;
X        }
X      } while(in_parens && cryptic[i] != '\0');
X      comment[j] = '\0';
X
X      /* and remove this from cryptic string too... */
X      if (cryptic[(j = chloc(cryptic,'('))-1] == ' ')
X        cryptic[j-1] = '\0';
X      else
X        cryptic[j] = '\0';
X    }
X    else
X      comment[0] = '\0';
X
X    i = j = 0;    /* reset */
X
X    while (cryptic[i] != AT_SIGN && cryptic[i] != BANG &&
X           cryptic[i] != '\0' && cryptic[i] != '(')
X      sitename[j++] = cryptic[i++];
X
X    sitename[j++] = '\0';
X
X    j = 0;
X
X    if (cryptic[i] == '\0') return(-1);    /* nothing to expand! */
X
X    domain_name = (cryptic[i] == AT_SIGN);
X
X    i++;
X
X    while (cryptic[i] != '\0' && cryptic[i] != '(' &&
X               ! whitespace(cryptic[i]))
X      name[j++] = cryptic[i++];
X
X    name[j] = '\0';
X
X    if (domain_name) {
X      strcpy(temp, name);
X      strcpy(name, sitename);
X      strcpy(sitename, temp);
X    }
X
X    dprint(5, (debugfile, "\nBroke address into '%s' @ '%s' '%s'\n\n",
X        name, sitename, comment));
X
X#ifdef USE_DBM
X
X    if (size_of_pathfd == 0)
X      return(-1);
X
X    key.dptr  = sitename;
X    key.dsize = strlen(sitename) + 1;
X
X    contents = fetch(key);
X
X    if (contents.dptr == 0)
X      return(-1);            /* can't find it! */
X
X    sprintf(expanded, contents.dptr, name);
X    strcat(expanded, " ");            /* add a single space... */
X    strcat(expanded, comment);        /*    ...and add comment */
X    return(0);
X#else
X
X#ifndef LOOK_CLOSE_AFTER_SEARCH
X
X    if (talk_to(sitename)) {
X      strcpy(expanded, old_name);    /* restore! */
X      return(0);
X    }
X#endif
X
X    if ((addr = find_path_to(sitename, TRUE)) == NULL) {
X
X#ifdef LOOK_CLOSE_AFTER_SEARCH
X
X        if (talk_to(sitename)) {
X          strcpy(expanded, old_name);    /* restore! */
X          return(0);
X        }
X        else
X#endif
X        if ((addr = expand_domain(cryptic)) != NULL) {
X           strcpy(expanded, addr);    /* into THIS buffer */
X           strcat(expanded, comment);    /* patch in comment */
X           return(0);
X        }
X        else  if (size_of_pathfd == 0) {    /* no path database! */
X          strcpy(expanded, old_name);    /* restore! */
X          return(0);
X        }
X        else {                 /* We just can't get there! */
X          strcpy(expanded, old_name);    /* restore! */
X          return(-1);
X        }
X    }
X    else {            /* search succeeded */
X       sprintf(expanded, addr, name);
X       strcat(expanded, comment);        /* add comment */
X       return(0);
X    }
X#endif
X#endif
X}
X#endif /* defined(OPTIMIZE_RETURN) || !defined(DONT_TOUCH_ADDRESSES) */
X
Xint
Xbinary_search(name, address)
Xchar *name, *address;
X{
X    /* binary search file for name.  Return 0 if found, -1 if not */
X
X    char machine[40];
X    register long first = 0, last, middle;
X    register int  compare;
X
X    address[0] = '\0';
X
X    last = size_of_pathfd;
X
X    do {
X
X      middle = (long) ((first+last) / 2);
X
X      get_entry(machine, address, pathfd, middle);
X
X      compare = strcmp(name, machine);
X
X      if (compare < 0)
X        last = middle - 1;
X      else if (compare == 0)
X        return(0);
X      else  /* greater */
X        first = middle + 1;
X    } while (absolute(last) - absolute(first) > FIND_DELTA);
X
X    /* It could be that our target entry lies exactly at `first'.
X     * Since get_entry() compares at the entry beginning after
X     * the passed offset (unless it's 0), we need to decrement it
X     * (unless it's 0), and give it one more try.
X     */
X    get_entry(machine, address, pathfd, (first == 0L ? first : --first));
X    compare = strcmp(name, machine);
X    return(compare == 0 ? 0 : -1);
X}
X
Xget_entry(machine, address, fileid, offset)
Xchar *machine, *address;
XFILE *fileid;
Xlong offset;
X{
X    /** get entry...return machine and address immediately
X        following given offset in fileid.  **/
X
X    (void) fseek(fileid, offset, 0);
X
X    /* To get to the beginning of a record, if we are not at offset 0,
X     * read until we hit an end-of-line */
X
X    if(offset != 0L)
X      while (getc(fileid) != '\n')
X         ;
X
X    fscanf(fileid, "%s\t%s", machine, address);
X}
X
X#ifndef DONT_TOUCH_ADDRESSES
Xinit_findnode()
X{
X    /** Initialize the FILE and 'size_of_file' values for the
X        findnode procedure **/
X
X    struct stat buffer;
X    char   *path_filename;
X
X#ifdef USE_DBM
X    char buf[BUFSIZ];
X
X    sprintf(buf,"%s.pag", pathfile);
X    path_filename = buf;
X#else
X    path_filename = pathfile;
X#endif
X
X    if (stat(path_filename, &buffer) == -1) {
X      dprint(2, (debugfile,
X          "Warning: pathalias file \"%s\" wasn't found by %s\n",
X          path_filename, "init_findnode"));
X      size_of_pathfd = 0;
X      return;
X    }
X
X    size_of_pathfd = (long) buffer.st_size;
X
X#ifdef USE_DBM
X
X    if (dbminit(pathfile) != 0) {
X      dprint(2, (debugfile,
X         "Warning: couldn't initialize DBM database %s\n",
X         pathfile));
X      dprint(2, (debugfile, "** %s - %s **\n\n", error_name(errno),
X             error_description(errno)));
X      size_of_pathfd = 0;    /* error flag, in this case */
X      return;
X    }
X
X    return;
X#else
X
X    if ((pathfd = fopen(pathfile,"r")) == NULL) {
X      dprint(2, (debugfile,
X        "Warning: Can't read pathalias file \"%s\" within %s\n",
X           pathfile, "init_findnode"));
X      size_of_pathfd = 0;
X    }
X    else
X      dprint(3, (debugfile, "\nOpened '%s' as pathalias database.\n\n",
X          pathfile));
X#endif
X}
X#endif /* DONT_TOUCH_ADDRESSES */
X
Xchar *find_path_to(machine, printf_format)
Xchar *machine;
Xint   printf_format;
X{
X    /** Returns either the path to the specified machine or NULL if
X        not found.  If "printf_format" is TRUE, then it leaves the
X        '%s' intact, otherwise it assumes that the address is a uucp
X        address for the domain expansion program and removes the
X        last three characters of the expanded name ("!%s") since
X        they're redundant with the expansion!
X        **/
X
X    static char buffer[SLEN];    /* space for path */
X
X    if (size_of_pathfd > 0)
X      if (binary_search(machine, buffer) != -1) {       /* found it! */
X        if (! printf_format && strlen(buffer) > 3)
X          buffer[strlen(buffer)-3] = '\0';
X        return( (char *) buffer);
X      }
X
X    return(NULL);                        /* failed if it's here! */
X}
SHAR_EOF
echo "File src/aliasdb.c is complete"
chmod 0444 src/aliasdb.c || echo "restore of src/aliasdb.c fails"
echo "x - extracting src/aliaslib.c (Text)"
sed 's/^X//' << 'SHAR_EOF' > src/aliaslib.c &&
X
Xstatic char rcsid[] = "@(#)$Id: aliaslib.c,v 4.1 90/04/28 22:42:29 syd Exp $";
X
X/*******************************************************************************
X *  The Elm Mail System  -  $Revision: 4.1 $   $State: Exp $
X *
X *             Copyright (c) 1986, 1987 Dave Taylor
X *             Copyright (c) 1988, 1989, 1990 USENET Community Trust
X *******************************************************************************
X * Bug reports, patches, comments, suggestions should be sent to:
X *
X *    Syd Weinstein, Elm Coordinator
X *    [e-mail]            dsinc!elm
X *
X *******************************************************************************
X * $Log:    aliaslib.c,v $
X * Revision 4.1  90/04/28  22:42:29  syd
X * checkin of Elm 2.3 as of Release PL0
X *
X *
X ******************************************************************************/
X
X/** Library of functions dealing with the alias system...
X
X **/
X
X#include "headers.h"
X#include <ctype.h>
X
Xchar *get_alias_address(), *get_token(), *strpbrk(), *index();
Xlong lseek();
X
X#ifdef DONT_TOUCH_ADDRESSES
Xchar *expand_system();
X#endif
X
X/*
X * Expand "name" as an alias and return a pointer to static data containing
X * the expansion.  If "name" is not an alias, then NULL is returned.
X */
Xchar *get_alias_address(name, mailing)
Xchar *name;    /* name to expand as an alias                */
Xint mailing;    /* TRUE to fully expand group names & recursive aliases    */
X{
X    static char buffer[VERY_LONG_STRING];
X    char *bufptr;
X    int bufsize;
X
X    /* reads files iff changed since last read */
X    read_alias_files();
X
X    /* if name is an alias then return its expansion */
X    bufptr = buffer;
X    bufsize = sizeof(buffer);
X    if ( do_get_alias(name, &bufptr, &bufsize, mailing, FALSE, 0) )
X      return buffer+2;    /* skip comma/space from add_name_to_list() */
X
X    /* nope...not an alias */
X    return (char *) NULL;
X}
X
X
X/*
X * Determine if "name" is an alias, and if so expand it and store the result in
X * "*bufptr".  TRUE returned if any expansion occurs, else FALSE is returned.
X */
Xint do_get_alias(name, bufptr, bufsizep, mailing, sysalias, depth)
Xchar *name;    /* name to expand as an alias                */
Xchar **bufptr;    /* place to store result of expansion            */
Xint *bufsizep;    /* available space in the buffer            */
Xint mailing;    /* TRUE to fully expand group names & recursive aliases    */
Xint sysalias;    /* TRUE to suppress checks of the user's aliases    */
Xint depth;    /* recursion depth - initially call at depth=0        */
X{
X    char abuf[LONG_STRING];
X    int loc;
X
X    /* update the recursion depth counter */
X    ++depth;
X
X    dprint(6, (debugfile, "%*s->attempting alias expansion on \"%s\"\n",
X        (depth*2), "", name));
X
X    /* strip out (comments) and leading/trailing whitespace */
X    remove_possible_trailing_spaces( name = strip_parens(name) );
X    for ( ; isspace(*name)  ; ++name ) ;
X
X    /* throw back empty addresses */
X    if ( *name == '\0' )
X      return FALSE;
X
X    /* check for a user alias, unless in the midst of sys alias expansion */
X    if ( !sysalias && user_data != -1 ) {
X      if ( (loc = find(name, user_hash_table, MAX_UALIASES)) >= 0 ) {
X        lseek(user_data, ntohl(user_hash_table[loc].byte), 0L);
X        get_line(user_data, abuf);
X        goto do_expand;
X      }
X    }
X
X    /* check for a system alias */
X    if ( system_data != -1 ) {
X      if ( (loc = find(name, system_hash_table, MAX_SALIASES)) >= 0 ) {
X        lseek(system_data, ntohl(system_hash_table[loc].byte), 0L);
X        get_line(system_data, abuf);
X        sysalias = TRUE;
X        goto do_expand;
X      }
X    }
X
X    /* nope...this name wasn't an alias */
X    return FALSE;
X
Xdo_expand:
X
X    /* at this point, alias is expanded into "abuf" - now what to do... */
X
X    dprint(7, (debugfile, "%*s  ->expanded alias to \"%s\"\n",
X        (depth*2), "", abuf));
X
X    /* check for an exact match */
X    loc = strlen(name);
X    if (strncmp(name, abuf, loc) == 0 && (abuf[loc] == ' ' || abuf[loc] == '\0'))
X#ifdef DONT_TOUCH_ADDRESSES
X      return add_name_to_list(abuf, bufptr, bufsizep);
X#else
X      return add_name_to_list(expand_system(abuf, TRUE), bufptr, bufsizep);
X#endif
X
X    /* see if we are stuck in a loop */
X    if ( depth > 12 ) {
X      dprint(2, (debugfile,
X          "alias expansion loop detected at \"%s\" - bailing out\n", name));
X        error1("Error expanding \"%s\" - probable alias definition loop.",
X          name);
X        return FALSE;
X    }
X
X    /* see if the alias equivalence is a group name */
X    if ( mailing && abuf[0] == '!' )
X      return do_expand_group(abuf+1, bufptr, bufsizep, sysalias, depth);
X
X    /* see if the alias equivalence is an email address */
X    if ( strpbrk(abuf,"!@:") != NULL ) {
X#ifdef DONT_TOUCH_ADDRESSES
X      return add_name_to_list(abuf, bufptr, bufsizep);
X#else
X      return add_name_to_list(expand_system(abuf, TRUE), bufptr, bufsizep);
X#endif
X    }
X
X    /* see if the alias equivalence is itself an alias */
X    if ( mailing && do_get_alias(abuf,bufptr,bufsizep,TRUE,sysalias,depth) )
X      return TRUE;
X
X    /* the alias equivalence must just be a local address */
X    return add_name_to_list(abuf, bufptr, bufsizep);
X}
X
X
X/*
X * Expand the comma-delimited group of names in "group", storing the result
X * in "*bufptr".  Returns TRUE if expansion occurs OK, else FALSE in the
X * event of errors.
X */
Xint do_expand_group(group, bufptr, bufsizep, sysalias, depth)
Xchar *group;    /* group list to expand                    */
Xchar **bufptr;    /* place to store result of expansion            */
Xint *bufsizep;    /* available space in the buffer            */
Xint sysalias;    /* TRUE to suppress checks of the user's aliases    */
Xint depth;    /* nesting depth                    */
X{
X    char *name;
X
X    /* go through each comma-delimited name in the group */
X    while ( group != NULL ) {
X
X      /* extract the next name from the list */
X      for ( name = group ; isspace(*name) ; ++name ) ;
X      if ( (group = index(name,',')) != NULL )
X          *group++ = '\0';
X      remove_possible_trailing_spaces(name);
X      if ( *name == '\0' )
X        continue;
X
X      /* see if this name is really an alias */
X      if ( do_get_alias(name, bufptr, bufsizep, TRUE, sysalias, depth) )
X        continue;
X
X      /* verify it is a valid address */
X      if ( !valid_name(name) ) {
X        dprint(3, (debugfile,
X        "Illegal address %s during list expansion in %s\n",
X        name, "do_get_alias"));
X        error1("%s is an illegal address!", name);
X        return FALSE;
X      }
X
X      /* add it to the list */
X      if ( !add_name_to_list(name, bufptr, bufsizep) )
X        return FALSE;
X
X    }
X
X    return TRUE;
X}
X
X
X/*
X * Append "<comma><space>name" to the list, checking to ensure the buffer
X * does not overflow.  Upon return, *bufptr and *bufsizep will be updated to
X * reflect the stuff added to the buffer.  If a buffer overflow would occur,
X * an error message is printed and FALSE is returned, else TRUE is returned.
X */
Xint add_name_to_list(name,bufptr,bufsizep)
Xregister char *name;    /* name to append to buffer            */
Xchar **bufptr;        /* pointer to pointer to end of buffer        */
Xint *bufsizep;        /* pointer to space remaining in buffer        */
X{
X    register char *dest = *bufptr;
X    register int bufsize = *bufsizep;
X
X    if ( bufsize < 2 )
X      return FALSE;
X    *dest++ = ','; --bufsize;
X    *dest++ = ' '; --bufsize;
X
X    while ( *name != '\0' && --bufsize > 0 )
X      *dest++ = *name++ ;
X    *dest = '\0';
X
X    *bufptr = dest;
X    *bufsizep = bufsize;
X    if ( bufsize <= 0 ) {
X      error("Alias expansion is too long.");
X      return FALSE;
X    }
X
X    return TRUE;
X}
X
X
X
X#ifndef DONT_TOUCH_ADDRESSES
Xchar *expand_system(buffer, show_errors)
Xchar *buffer;
Xint   show_errors;
X{
X    /** This routine will check the first machine name in the given path
X        (if any) and expand it out if it is an alias...if not, it will
X        return what it was given.  If show_errors is false, it won't
X        display errors encountered...
X    **/
X
X    dprint(6, (debugfile, "expand_system(%s, show-errors=%s)\n", buffer,
X        onoff(show_errors)));
X    findnode(buffer, show_errors);
X
X    return( (char *) buffer);
X}
X#endif
X
Xint
Xfind(word, table, size)
Xchar *word;
Xstruct alias_rec table[];
Xint size;
X{
X    /** find word and return loc, or -1 **/
X    register int loc;
X
X    if (strlen(word) > 20) {
X      dprint(3, (debugfile, "Overly long alias name entered: %s\n", word));
X      error1("Bad alias name: %s.  Too long.\n", word);
X      return(-1);
X    }
X
X    loc = hash_it(word, size);
X
X    while (stricmp(word, table[loc].name) != 0) {
X      if (table[loc].name[0] == '\0')
X        return(-1);
X      loc = (loc + 1) % size;
X    }
X
X    return(loc);
X}
X
Xint
Xstricmp(s1,s2)
Xregister char *s1, *s2;
X{
X    /* case insensitive comparison */
X    register int d;
X    for (;;) {
X      d = ( isupper(*s1) ? tolower(*s1) : *s1 )
X          - ( isupper(*s2) ? tolower(*s2) : *s2 ) ;
X      if ( d != 0 || *s1 == '\0' || *s2 == '\0' )
X        return d;
X      ++s1;
X      ++s2;
X    }
X    /*NOTREACHED*/
X}
X
Xint
Xhash_it(string, table_size)
Xregister char *string;
Xint   table_size;
X{
X    /** compute the hash function of the string, returning
X        it (mod table_size) **/
X
X    register int sum = 0;
X    for ( ; *string != '\0' ; ++string )
X      sum += (int) ( isupper(*string) ? tolower(*string) : *string );
X
X    return(sum % table_size);
X}
X
Xget_line(fd, buffer)
Xint fd;
Xchar *buffer;
X{
X    /* Read from file fd.  End read upon reading either
X       EOF or '\n' character (this is where it differs
X       from a straight 'read' command!) */
X
X    register int i= 0;
X    char     ch;
X
X    while (read(fd, &ch, 1) > 0)
X      if (ch == '\n' || ch == '\r') {
X        buffer[i] = 0;
X        return;
X      }
X      else
X        buffer[i++] = ch;
X}
SHAR_EOF
chmod 0444 src/aliaslib.c || echo "restore of src/aliaslib.c fails"
echo "x - extracting src/args.c (Text)"
sed 's/^X//' << 'SHAR_EOF' > src/args.c &&
X
Xstatic char rcsid[] = "@(#)$Id: args.c,v 4.1 90/04/28 22:42:31 syd Exp $";
X
X/*******************************************************************************
X *  The Elm Mail System  -  $Revision: 4.1 $   $State: Exp $
X *
X *             Copyright (c) 1986, 1987 Dave Taylor
X *             Copyright (c) 1988, 1989, 1990 USENET Community Trust
X *******************************************************************************
X * Bug reports, patches, comments, suggestions should be sent to:
X *
X *    Syd Weinstein, Elm Coordinator
X *    [e-mail]            dsinc!elm
X *
X *******************************************************************************
X * $Log:    args.c,v $
X * Revision 4.1  90/04/28  22:42:31  syd
X * checkin of Elm 2.3 as of Release PL0
X *
X *
X ******************************************************************************/
X
X/** starting argument parsing routines for ELM system...
X
X**/
X
X#include "headers.h"
X#include "patchlevel.h"
X
Xextern char *optarg;        /* optional argument as we go */
Xextern int   optind;            /* argnum + 1 when we leave   */
X
Xvoid exit();    /* just keeping lint happy.... */
X
Xchar *
Xparse_arguments(argc, argv, to_whom)
Xint argc;
Xchar *argv[], *to_whom;
X{
X    /** Set flags according to what was given to program.  If we are
X        fed a name or series of names, put them into the 'to_whom' buffer
X        and if the check_only flag wasn't presented, set mail_only to ON,
X        and if stdin is not a tty, set batch_only  to ON;
X        Return req_mfile, which points to a named mail file or is empty.
X        **/
X
X    register int c = 0;
X    char *strcpy();
X    static char req_mfile[SLEN];
X
X    to_whom[0] = '\0';
X    batch_subject[0] = '\0';
X
X        while ((c = getopt(argc, argv, "?acd:f:hkKms:Vvwz")) != EOF) {
X       switch (c) {
X         case 'a' : arrow_cursor++;        break;
X         case 'c' : check_only++;        break;
X         case 'd' : debug = atoi(optarg);    break;
X         case 'f' : strcpy(req_mfile, optarg);    break;
X         case '?' :
X         case 'h' : args_help();
X         case 'k' : hp_terminal++;    break;
X         case 'K' : hp_terminal++; hp_softkeys++;    break;
X         case 'm' : mini_menu = 0;    break;
X         case 's' : strcpy(batch_subject, optarg);    break;
X             case 'V' : sendmail_verbose++;     break;
X         case 'v' : args_version();
X         case 'w' : warnings = 0;    break;
X         case 'z' : check_size++;   break;
X        }
X     }
X
X
X#ifndef DEBUG
X    if (debug)
X      printf(
X     "Warning: system created without debugging enabled - request ignored\n");
X    debug = 0;
X#endif
X
X    if (optind < argc) {
X      while (optind < argc) {
X        if (strlen(to_whom) + strlen(to_whom[0] != '\0'? " " : "") +
X            strlen(argv[optind]) > SLEN)
X                exit(printf("\n\rToo many addresses, or addresses too long!\n\r"));
X
X        sprintf(to_whom, "%s%s%s", to_whom,
X                to_whom[0] != '\0'? " " : "", argv[optind]);
X        if(!check_only)
X          mail_only++;
X        optind++;
X      }
X      check_size = 0;    /* NEVER do this if we're mailing!! */
X    }
X
X     if (strlen(batch_subject) > 0 && ! mail_only)
X       exit(printf(
X     "\n\rDon't understand specifying a subject and no-one to send to!\n\r"));
X
X    if (!isatty(fileno(stdin)) && !check_only) {
X      batch_only = ON;
X      if(*batch_subject == '\0')
X        strcpy(batch_subject, DEFAULT_BATCH_SUBJECT);
X    }
X    return(req_mfile);
X
X
X}
X
Xargs_help()
X{
X    /**  print out possible starting arguments... **/
X
X    printf("\nPossible Starting Arguments for ELM program:\n\n");
X    printf("\targ\t\t\tMeaning\n");
X    printf("\t -a \t\tArrow - use the arrow pointer regardless\n");
X    printf("\t -c \t\tCheckalias - check the given aliases only\n");
X    printf("\t -dn\t\tDebug - set debug level to 'n'\n");
X    printf(
X      "\t -fx\t\tFolder - read folder 'x' rather than incoming mailbox\n");
X    printf("\t -h \t\tHelp - give this list of options\n");
X    printf("\t -k \t\tKeypad - enable HP 2622 terminal keyboard\n");
X    printf("\t -K \t\tKeypad&softkeys - enable use of softkeys + \"-k\"\n");
X    printf("\t -m \t\tMenu - Turn off menu, using more of the screen\n");
X    printf("\t -sx\t\tSubject 'x' - for batchmailing\n");
X        printf("\t -V \t\tEnable sendmail voyeur mode.\n");
X    printf("\t -v \t\tPrint out ELM version information.\n");
X    printf("\t -w \t\tSupress warning messages...\n");
X    printf("\t -z \t\tZero - don't enter ELM if no mail is pending\n");
X    printf("\n");
X    printf("\n");
X    exit(1);
X}
X
Xargs_version()
X{
X    /** print out version information **/
X
X    printf("\nElm Version and Identification Information:\n\n");
X    printf("\tElm %s PL%d, of %s\n",VERSION,PATCHLEVEL,VERS_DATE);
X    printf("\t(C) Copyright 1986, 1987 Dave Taylor\n");
X    printf("\t(C) Copyright 1988, 1989, 1990 USENET Community Trust\n");
X    printf("\t----------------------------------\n");
X    printf("\tConfigured %s\n", CONFIGURE_DATE);
X    printf("\t----------------------------------\n");
X
X#ifdef USE_EMBEDDED_ADDRESSES
X    printf("\tFrom: and Reply-To: addresses are good: USE_EMBEDDED_ADDRESSES\n");
X#else /* USE_EMBEDDED_ADDRESSES */
X    printf("\tFrom: and Reply-To: addresses ignored: not USE_EMBEDDED_ADDRESSES\n");
X#endif /* USE_EMBEDDED_ADDRESSES */
X
X#ifdef OPTIMIZE_RETURN
X    printf("\tReturn addresses will be optimized: OPTIMIZE_RETURN\n");
X#else /* OPTIMIZE_RETURN */
X    printf("\tReturn addresses will not be optimized: not OPTIMIZE_RETURN\n");
X#endif
X
X#ifdef INTERNET
X    printf("\tPrefers Internet address formats: INTERNET\n");
X#else /* INTERNET */
X    printf("\tInternet address formats not used: not INTERNET\n");
X#endif /* INTERNET */
X
X#ifdef DEBUG
X    printf("\tDebug options are available: DEBUG\n");
X#else /* DEBUG */
X    printf("\tNo debug options are available: not DEBUG\n");
X#endif /* DEBUG */
X
X#ifdef CRYPT
X    printf("\tCrypt function enabled: CRYPT\n");
X#else /* CRYPT */
X    printf("\tCrypt function disabled: not CRYPT\n");
X#endif /* CRYPT */
X
X#ifdef ALLOW_MAILBOX_EDITING
X    printf("\tMailbox editing included: ALLOW_MAILBOX_EDITING\n");
X#else /* ALLOW_MAILBOX_EDITING */
X    printf("\tMailbox editing not included: not ALLOW_MAILBOX_EDITING\n");
X#endif /* ALLOW_MAILBOX_EDITING */
X
X#ifdef ENABLE_CALENDAR
X    printf("\tCalendar file feature enabled: ENABLE_CALENDAR\n");
X    printf("\t\t(Default calendar file is %s)\n",dflt_calendar_file);
X#else /* ENABLE_CALENDAR */
X    printf("\tCalendar file feature disabled: not ENABLE_CALENDAR\n");
X#endif /* ENABLE_CALENDAR */
X
X    printf("\n\n");
X    exit(1);
X
X}
X
SHAR_EOF
chmod 0444 src/args.c || echo "restore of src/args.c fails"
echo "x - extracting src/bouncebk.c (Text)"
sed 's/^X//' << 'SHAR_EOF' > src/bouncebk.c &&
X
Xstatic char rcsid[] = "@(#)$Id: bouncebk.c,v 4.1 90/04/28 22:42:33 syd Exp $";
X
X/*******************************************************************************
X *  The Elm Mail System  -  $Revision: 4.1 $   $State: Exp $
X *
X *             Copyright (c) 1986, 1987 Dave Taylor
X *             Copyright (c) 1988, 1989, 1990 USENET Community Trust
X *******************************************************************************
X * Bug reports, patches, comments, suggestions should be sent to:
X *
X *    Syd Weinstein, Elm Coordinator
X *    [e-mail]            dsinc!elm
X *
X *******************************************************************************
X * $Log:    bouncebk.c,v $
X * Revision 4.1  90/04/28  22:42:33  syd
X * checkin of Elm 2.3 as of Release PL0
X *
X *
X ******************************************************************************/
X
X/** This set of routines implement the bounceback feature of the mailer.
X    This feature allows mail greater than 'n' hops away (n specified by
X    the user) to have a 'cc' to the user through the remote machine.
X
X    Due to the vagaries of the Internet addressing (uucp -> internet -> uucp)
X    this will NOT generate bounceback copies with mail to an internet host!
X
X**/
X
X#include "headers.h"
X
Xchar *bounce_off_remote(),        /* forward declaration */
X     *strcat(), *strcpy();
X
Xint
Xuucp_hops(to)
Xchar *to;
X{
X    /** Given the entire "To:" list, return the number of hops in the
X        first address (a hop = a '!') or ZERO iff the address is to a
X          non uucp address.
X    **/
X
X    register int hopcount = 0, iindex;
X
X    for (iindex = 0; ! whitespace(to[iindex]) && to[iindex] != '\0'; iindex++) {
X      if (to[iindex] == '!')
X        hopcount++;
X      else if (to[iindex] == '@' || to[iindex] == '%' || to[iindex] == ':')
X        return(0);    /* don't continue! */
X    }
X
X    return(hopcount);
X}
X
Xchar *bounce_off_remote(to)
Xchar *to;
X{
X    /** Return an address suitable for framing (no, that's not it...)
X        Er, suitable for including in a 'cc' line so that it ends up
X        with the bounceback address.  The method is to take the first
X        address in the To: entry and break it into machines, then
X        build a message up from that.  For example, consider the
X        following address:
X            a!b!c!d!e!joe
X        the bounceback address would be;
X            a!b!c!d!e!d!c!b!a!ourmachine!ourname
X        simple, eh?
X    **/
X
X    static char address[LONG_STRING];    /* BEEG address buffer! */
X
X    char   host[MAX_HOPS][NLEN];    /* for breaking up addr */
X    register int hostcount = 0, hindex = 0,
X           iindex;
X
X    for (iindex = 0; !whitespace(to[iindex]) && to[iindex] != '\0'; iindex++) {
X      if (to[iindex] == '!') {
X        host[hostcount][hindex] = '\0';
X        hostcount++;
X        hindex = 0;
X      }
X      else
X        host[hostcount][hindex++] = to[iindex];
X    }
X
X    /* we have hostcount hosts... */
X
X    strcpy(address, host[0]);    /* initialize it! */
X
X    for (iindex=1; iindex < hostcount; iindex++) {
X      strcat(address, "!");
X      strcat(address, host[iindex]);
X    }
X
X    /* and now the same thing backwards... */
X
X    for (iindex = hostcount -2; iindex > -1; iindex--) {
X      strcat(address, "!");
X      strcat(address, host[iindex]);
X    }
X
X    /* and finally, let's tack on our machine and login name */
X
X    strcat(address, "!");
X    strcat(address, hostname);
X    strcat(address, "!");
X    strcat(address, username);
X
X    /* and we're done!! */
X
X    return( (char *) address );
X}
SHAR_EOF
chmod 0444 src/bouncebk.c || echo "restore of src/bouncebk.c fails"
echo "x - extracting src/builtin.c (Text)"
sed 's/^X//' << 'SHAR_EOF' > src/builtin.c &&
X
Xstatic char rcsid[] = "@(#)$Id: builtin.c,v 4.1 90/04/28 22:42:34 syd Exp $";
X
X/*******************************************************************************
X *  The Elm Mail System  -  $Revision: 4.1 $   $State: Exp $
X *
X *             Copyright (c) 1986, 1987 Dave Taylor
X *             Copyright (c) 1988, 1989, 1990 USENET Community Trust
X *******************************************************************************
X * Bug reports, patches, comments, suggestions should be sent to:
X *
X *    Syd Weinstein, Elm Coordinator
X *    [e-mail]            dsinc!elm
X *
X *******************************************************************************
X * $Log:    builtin.c,v $
X * Revision 4.1  90/04/28  22:42:34  syd
X * checkin of Elm 2.3 as of Release PL0
X *
X *
X ******************************************************************************/
X
X/** This is the built-in pager for displaying messages while in the Elm
X    program.  It's a bare-bones pager with precious few options. The idea
X    is that those systems that are sufficiently slow that using an external
X    pager such as 'more' is too slow, then they can use this!
X
X    Also added support for the "builtin+" pager (clears the screen for
X    each new page) including a two-line overlap for context...
X
X**/
X
X#include "headers.h"
X#include <ctype.h>
X
X#define  BEEP        007        /* ASCII Bell character */
X
Xstatic    unfilled_lines,
X    form_title;
X
Xint    lines_displayed,        /* total number of lines displayed      */
X    total_lines_to_display,        /* total number of lines in message     */
X    pages_displayed;         /* for the nth page titles and all      */
X
Xstart_builtin(lines_in_message)
Xint lines_in_message;
X{
X    /** clears the screen and resets the internal counters... **/
X
X    dprint(8,(debugfile,
X        "displaying %d lines from message using internal pager\n",
X        lines_in_message));
X
X    unfilled_lines = LINES;
X    form_title = 1;
X    lines_displayed = 0;
X        pages_displayed = 1;
X
X    total_lines_to_display = lines_in_message;
X}
X
Xextern int tabspacing;
X
Xint
Xnext_line(inputptr, output, width)
Xchar **inputptr, *output;
Xregister unsigned width;
X{
X    /* Copy characters from input to output and copy
X     * remainder of output to output. In copying use ^X notation for
X     * control characters, '?' non-ascii characters, expand tabs
X     * to correct number of spaces till next tab stop.
X     * Column zero of the next line is considered to be the tab stop
X     * that follows the last one that fits on a line.
X     * Copy until newline/return encountered, null char encountered,
X     * width characters producted in output buffer.
X     * Formfeed is handled exceptionally. If encountered it
X     * is removed from input and 1 is returned. Otherwise 0 is returned.
X     */
X
X    register char *optr, *iptr;
X    register unsigned chars_output, nt;
X    int ret_val;
X
X    optr = output;
X    iptr = *inputptr;
X    chars_output = 0;
X
X    ret_val = 0;    /* presume no formfeed */
X    while(1) {
X
X      if(chars_output >= width) {        /* no more room on line */
X        *optr++ = '\n';
X        *optr++ = '\r';
X        /* if next input character is newline or return,
X         * we can skip over it since we are outputing a newline anyway */
X        if((*iptr == '\n') || (*iptr == '\r'))
X          iptr++;
X        break;
X      } else if (*iptr == '\n' || *iptr == '\r') {    /*newline or return */
X        *optr++ = '\n';
X        *optr++ = '\r';
X        iptr++;
X        break;            /* end of line */
X      } else if(*iptr == '\f') {        /* formfeed */
X        /* if next input character is newline or return,
X         * we can skip over it since we are outputing a formfeed anyway */
X        if((*++iptr == '\n') || (*iptr == '\r'))
X          iptr++;
X        ret_val = 1;
X        break;            /* leave rest of screen clear */
X      } else if(*iptr == '\0') {        /* none left in input string */
X        break;
X      } else if(*iptr == '\t') {        /* tab stop */
X        if((nt=next_tab(chars_output+1)) > width) {
X          *optr++ = '\n';        /* won't fit on this line - autowrap */
X          *optr++ = '\r';        /* tab by tabbing so-to-speak to 1st */
X          iptr++;            /* column of next line */
X          break;
X        } else {        /* will fit - output proper num of spaces */
X          while(chars_output < nt-1) {
X        chars_output++;
X        *optr++ = ' ';
X          }
X          iptr++;
X        }
X      } else if(isprint(*iptr)) {
X        *optr++ = *iptr++;            /* printing character */
X        chars_output++;
X      } else {            /* non-white space control character */
X        if(chars_output + 2 <= width) {
X          *optr++ = '^';
X          *optr++ = (*iptr == '\177' ? '?' : (*iptr&0177) + 'A' - 1);
X          iptr++;
X          chars_output += 2;
X        } else {            /* no space on line for both chars */
X          break;
X        }
X      }
X    }
X    *optr = '\0';
X    *inputptr = iptr;
X    return(ret_val);
X}
X
X
Xint
Xdisplay_line(input_line)
Xchar *input_line;
X{
X    /** Display the given line on the screen, taking into account such
X        dumbness as wraparound and such.  If displaying this would put
X        us at the end of the screen, put out the "MORE" prompt and wait
X        for some input.   Return non-zero if the user terminates the
X        paging (e.g. 'i') or zero if we should continue. Also,
X            this will pass back the value of any character the user types in
X        at the prompt instead, if needed... (e.g. if it can't deal with
X        it at this point)
X    **/
X
X    char *pending, footer[SLEN], display_buffer[SLEN], ch;
X    int formfeed, lines_more;
X
X#ifdef MMDF
X    if (strcmp(input_line, MSG_SEPERATOR) == 0)
X      strcpy(input_line," ");
X#endif /* MMDF */
X    pending = input_line;
X    CarriageReturn();
X
X    do {
X
X      /* while there is more space on the screen - leave prompt line free */
X      while(unfilled_lines > 0) {
X
X        /* display a screen's lineful of the input line
X         * and reset pending to point to remainder of input line */
X        formfeed = next_line(&pending, display_buffer, COLUMNS);
X
X        if(*display_buffer == '\0') {    /* no line to display */
X          if(!formfeed)    /* no "formfeed" to display
X                      * need more lines for screen */
X        return(FALSE);
X        } else
X          Write_to_screen(display_buffer, 0);
X
X        /* if formfeed, clear remainder of screen */
X        if(formfeed) {
X          CleartoEOS();
X          unfilled_lines=0;
X        }
X        else
X          unfilled_lines--;
X
X        /* if screen is not full (leave room for prompt)
X         * but we've used up input line, return */
X
X        if(unfilled_lines > 0 && *pending == '\0')
X          return(FALSE);    /* we need more lines to fill screen */
X
X        /* otherwise continue to display next part of input line */
X      }
X
X      /* screen is now full - prompt for user input */
X      lines_more = total_lines_to_display - lines_displayed;
X      sprintf(footer,
X          ( (user_level == 0) ?
X  " There %s %d line%s left (%d%%). Press <space> for more, or 'i' to return. "
X          : (user_level == 1) ?
X  " %s%d line%s more (%d%%). Press <space> for more, 'i' to return. "
X          :
X  " %s%d line%s more (you've seen %d%%) "),
X           (user_level == 0 ?
X             (lines_more == 1 ? "is" : "are") : ""),
X           lines_more, plural(lines_more),
X           (int)((100L * lines_displayed) / total_lines_to_display));
X
X      MoveCursor(LINES, 0);
X      StartBold();
X      Write_to_screen(footer, 0);
X      EndBold();
X
X      switch(ch = ReadCh()) {
X
X        case '\n':
X        case '\r':    /* scroll down a line */
X            unfilled_lines = 1;
X            ClearLine(LINES);
X            break;
X
X        case ' ':    /* scroll a screenful */
X            unfilled_lines = LINES;
X            if(clear_pages) {
X              ClearScreen();
X              MoveCursor(0,0);
X              CarriageReturn();
X
X              /* output title */
X              if(title_messages && filter) {
X                title_for_page(++pages_displayed);
X                unfilled_lines -= 2;
X              }
X            } else ClearLine(LINES);
X
X            /* and keep last line to be first line of next
X             * screenful unless we had a formfeed */
X            if(!formfeed) {
X              if(clear_pages)
X                Write_to_screen(display_buffer, 0);
X              unfilled_lines--;
X            }
X            break;
X
X        default:    return(ch);
X      }
X      CarriageReturn();
X    } while(*pending);
X    return(FALSE);
X}
X
Xtitle_for_page(page)
Xint page;
X{
X    /** Output a nice title for the second thru last pages of the message
X        we're currently reading. Note - this code is very similar to
X        that which produces the title for the first page, except that
X        page number replaces the date and the method by which it
X        gets to the screen **/
X
X    static char title1[SLEN], title2[SLEN];
X    char titlebuf[SLEN], title3[SLEN], who[SLEN];
X    static t1_len, t2_len;
X    register int padding, showing_to;
X
X    /* format those parts of the title that are constant for a message */
X    if(form_title) {
X
X      showing_to = tail_of(headers[current-1]->from, who,
X        headers[current-1]->to);
X
X      sprintf(title1, "%s %d/%d  ",
X          headers[current-1]->status & DELETED ? "[deleted]" :
X          headers[current-1]->status & FORM_LETTER ? "Form": "Message",
X          current, message_count);
X      t1_len = strlen(title1);
X      sprintf(title2, "%s %s", showing_to? "To" : "From", who);
X      t2_len = strlen(title2);
X    }
X    /* format those parts of the title that vary between pages of a mesg */
X    sprintf(title3, "  Page %d", page);
X
X    /* truncate or pad title2 portion on the right
X     * so that line fits exactly to the rightmost column */
X    padding = COLUMNS - (t1_len + t2_len + strlen(title3));
X
X    sprintf(titlebuf, "%s%-*.*s%s\n\r\n\r", title1, t2_len+padding,
X        t2_len+padding, title2, title3);
X        /* extra newline is to give a blank line after title */
X
X    Write_to_screen(titlebuf, 0);
X    form_title = 0;
X}
SHAR_EOF
chmod 0444 src/builtin.c || echo "restore of src/builtin.c fails"
echo "x - extracting src/calendar.c (Text)"
sed 's/^X//' << 'SHAR_EOF' > src/calendar.c &&
X
Xstatic char rcsid[] = "@(#)$Id: calendar.c,v 4.1 90/04/28 22:42:36 syd Exp $";
X
X/*******************************************************************************
X *  The Elm Mail System  -  $Revision: 4.1 $   $State: Exp $
X *
X *             Copyright (c) 1986, 1987 Dave Taylor
X *             Copyright (c) 1988, 1989, 1990 USENET Community Trust
X *******************************************************************************
X * Bug reports, patches, comments, suggestions should be sent to:
X *
X *    Syd Weinstein, Elm Coordinator
X *    [e-mail]            dsinc!elm
X *
X *******************************************************************************
X * $Log:    calendar.c,v $
X * Revision 4.1  90/04/28  22:42:36  syd
X * checkin of Elm 2.3 as of Release PL0
X *
X *
X ******************************************************************************/
X
X/** This routine implements a rather snazzy idea suggested by Warren
X    Carithers of the Rochester Institute of Technology that allows
X    mail to contain entries formatted in a manner that will allow direct
X    copying into a users calendar program.
X
X    All lines in the current message beginning with "->", e.g.
X
X    -> Mon 04/21 1:00p meet with chairman candidate
X
X    get copied into the user's calendar file.
X
X**/
X
X#include "headers.h"
X
X#ifdef ENABLE_CALENDAR        /* if not defined, this will be an empty file */
X
X#include <errno.h>
X
Xextern int errno;
X
Xchar *error_name(), *error_description(), *strcpy();
X
Xscan_calendar()
X{
X    FILE *calendar;
X    int  count;
X
X    /* First step is to open the calendar file for appending... **/
X
X    if (can_open(calendar_file, "a") != 0) {
X      dprint(2, (debugfile,
X          "Error: wrong permissions to append to calendar %s\n",
X          calendar_file));
X      dprint(2, (debugfile, "** %s - %s **\n",
X          error_name(errno), error_description(errno)));
X      error1("Not able to append to file %s!", calendar_file);
X      return;
X    }
X
X    save_file_stats(calendar_file);
X
X    if ((calendar = fopen(calendar_file,"a")) == NULL) {
X      dprint(2, (debugfile,
X        "Error: couldn't append to calendar file %s (scan)\n",
X        calendar_file));
X      dprint(2, (debugfile, "** %s - %s **\n",
X          error_name(errno), error_description(errno)));
X      error1("Couldn't append to file %s!", calendar_file);
X      return;
X    }
X
X    count = extract_info(calendar);
X
X    fclose(calendar);
X
X    restore_file_stats(calendar_file);
X
X    if (count > 0)
X      error2("%d entr%s saved in calendar file.",
X         count, count > 1 ? "ies" : "y");
X    else
X      error("No calendar entries found in that message.");
X
X    return;
X}
X
Xint
Xextract_info(save_to_fd)
XFILE *save_to_fd;
X{
X    /** Save the relevant parts of the current message to the given
X        calendar file.  The only parameter is an opened file
X        descriptor, positioned at the end of the existing file **/
X
X    register int entries = 0, lines;
X    char buffer[SLEN], *cp, *is_cal_entry();
X
X        /** get to the first line of the message desired **/
X
X        if (fseek(mailfile, headers[current-1]->offset, 0) == -1) {
X             dprint(1,(debugfile,
X        "ERROR: Attempt to seek %d bytes into file failed (%s)",
X        headers[current-1]->offset, "extract_info"));
X             error1("ELM [seek] failed trying to read %d bytes into file.",
X             headers[current-1]->offset);
X             return(0);
X        }
X
X        /* how many lines in message? */
X
X        lines = headers[current-1]->lines;
X
X        /* now while not EOF & still in message... scan it! */
X
X    while (lines) {
X
X          if(fgets(buffer, SLEN, mailfile) == NULL)
X        break;
X
X      if(buffer[strlen(buffer)-1] == '\n')
X        lines--;                    /* got a full line */
X
X      if((cp = is_cal_entry(buffer)) != NULL) {
X        entries++;
X        fprintf(save_to_fd,"%s", cp);
X      }
X
X    }
X    dprint(4,(debugfile,
X        "Got %d calender entr%s.\n", entries, entries > 1? "ies":"y"));
X
X    return(entries);
X}
X
Xchar *
Xis_cal_entry(string)
Xregister char *string;
X{
X    /* If string is of the form
X     *    ->{optional white space} {stuff}
X     * return a pointer to stuff, otherwise return NULL.
X     */
X
X    if(strncmp(string, "->", 2) == 0) {
X      for(string +=2 ; whitespace(*string); string++)
X          ;
X      return(string);
X    }
X    return(NULL);
X}
X
X#endif
SHAR_EOF
chmod 0444 src/calendar.c || echo "restore of src/calendar.c fails"
echo "x - extracting src/conn_to.c (Text)"
sed 's/^X//' << 'SHAR_EOF' > src/conn_to.c &&
X
Xstatic char rcsid[] = "@(#)$Id: conn_to.c,v 4.1 90/04/28 22:42:37 syd Exp $";
X
X/*******************************************************************************
X *  The Elm Mail System  -  $Revision: 4.1 $   $State: Exp $
X *
X *             Copyright (c) 1986, 1987 Dave Taylor
X *             Copyright (c) 1988, 1989, 1990 USENET Community Trust
X *******************************************************************************
X * Bug reports, patches, comments, suggestions should be sent to:
X *
X *    Syd Weinstein, Elm Coordinator
X *    [e-mail]            dsinc!elm
X *
X *******************************************************************************
X * $Log:    conn_to.c,v $
X * Revision 4.1  90/04/28  22:42:37  syd
X * checkin of Elm 2.3 as of Release PL0
X *
X *
X ******************************************************************************/
X
X/** This contains the routine(s) needed to have the Elm mailer figure
X    out what machines the current machine can talk to.
X    It will invoke uuname to a file, then read the file in!
X**/
X
X#include "headers.h"
X
Xchar *strcpy();
X
X#ifndef DONT_TOUCH_ADDRESSES
Xget_connections()
X{
X
X    /** get the direct connections that this machine has
X        using the uuname routine to get the names.
X    **/
X
X    FILE *fd;
X    char  buffer[SLEN], filename[SLEN];
X    struct lsys_rec *system_record, *previous_record;
X    int   loc_on_line;
X
X
X    if (! warnings) {        /* skip this - they don't care! */
X      talk_to_sys = NULL;
X      return;
X    }
X
X    if (strlen(uuname) == 0) {    /* skip this - no way to get connections */
X      warnings = NO;
X      talk_to_sys = NULL;
X      dprint(1, (debugfile, "No uuname - clearing warnings\n"));
X      error("Warning: no uuname command, clearing option warnings");
X      return;
X    }
X
X    sprintf(filename, "%s%s%d", temp_dir, temp_uuname, getpid());
X    sprintf(buffer,"%s > %s", uuname, filename);
X
X    if (system_call(buffer, SH, FALSE, FALSE) != 0) {
X      dprint(1, (debugfile, "Can't get uuname info - system() failed!\n"));
X      goto unable_to_get;
X    }
X
X    if ((fd = fopen(filename, "r")) == NULL) {
X      dprint(1, (debugfile,
X        "Can't get uuname info - can't open file %s for reading\n",
X         filename));
X      goto unable_to_get;
X    }
X
X    previous_record = NULL;
X
X    while (fgets(buffer, SLEN, fd) != NULL) {
X      no_ret(buffer);
X      if (previous_record == NULL) {
X        dprint(2, (debugfile, "uuname\tdirect connection to %s, ", buffer));
X        loc_on_line = 30 + strlen(buffer);
X        previous_record = (struct lsys_rec *) pmalloc(sizeof *talk_to_sys);
X
X        strcpy(previous_record->name, buffer);
X        previous_record->next = NULL;
X        talk_to_sys = previous_record;
X      }
X      else {    /* don't have to check uniqueness - uuname does that! */
X        if (loc_on_line + strlen(buffer) > 80) {
X          dprint(2, (debugfile, "\n\t"));
X          loc_on_line = 8;
X        }
X        dprint(2, (debugfile, "%s, ", buffer));
X        loc_on_line += (strlen(buffer) + 2);
X        system_record = (struct lsys_rec *) pmalloc(sizeof *talk_to_sys);
X
X        strcpy(system_record->name, buffer);
X        system_record->next = NULL;
X        previous_record->next = system_record;
X        previous_record = system_record;
X      }
X    }
X
X    fclose(fd);
X
X    (void) unlink(filename);        /* kill da temp file!! */
X
X    dprint(2, (debugfile, "\n"));        /* for a nice format! Yeah! */
X
X    return;                    /* it all went okay... */
X
Xunable_to_get:
X    unlink(filename);    /* insurance */
X    error("Warning: couldn't figure out system connections...");
X    talk_to_sys = NULL;
X}
X#endif
SHAR_EOF
chmod 0444 src/conn_to.c || echo "restore of src/conn_to.c fails"
echo "x - extracting src/curses.c (Text)"
sed 's/^X//' << 'SHAR_EOF' > src/curses.c &&
X
Xstatic char rcsid[] = "@(#)$Id: curses.c,v 4.1 90/04/28 22:42:39 syd Exp $";
X
X/*******************************************************************************
X *  The Elm Mail System  -  $Revision: 4.1 $   $State: Exp $
X *
X *             Copyright (c) 1986, 1987 Dave Taylor
X *             Copyright (c) 1988, 1989, 1990 USENET Community Trust
X *******************************************************************************
X * Bug reports, patches, comments, suggestions should be sent to:
X *
X *    Syd Weinstein, Elm Coordinator
X *    [e-mail]            dsinc!elm
X *
X *******************************************************************************
X * $Log:    curses.c,v $
X * Revision 4.1  90/04/28  22:42:39  syd
X * checkin of Elm 2.3 as of Release PL0
X *
X *
X ******************************************************************************/
X
X/**  This library gives programs the ability to easily access the
X     termcap information and write screen oriented and raw input
X     programs.  The routines can be called as needed, except that
X     to use the cursor / screen routines there must be a call to
X     InitScreen() first.  The 'Raw' input routine can be used
X     independently, however.
X
X**/
X
X/** NOTE THE ADDITION OF: the #ifndef ELM stuff around routines that
X    we don't use.  This is for code size and compile time speed...
X**/
X
X#include "headers.h"
X
X#ifdef TERMIOS
X#  include <termios.h>
X# if __convex__
X#  include <sys/ioctl.h>    /* non-standard, for TIOCGWINSZ */
X# endif
X#else
X# ifdef TERMIO
X#  include <termio.h>
X# else
X#  include <sgtty.h>
X# endif
X#endif
X
X#include <ctype.h>
X
X#ifdef PTEM
X#  include <sys/types.h>
X#  include <sys/stream.h>
X#  include <sys/ptem.h>
X#endif
X
X#ifdef BSD
X#undef tolower
X#endif
X
X#define TTYIN    0
X
X#ifdef SHORTNAMES
X# define _clearinverse    _clrinv
X# define _cleartoeoln    _clrtoeoln
X# define _cleartoeos    _clr2eos
X# define _transmit_off    xmit_off
X# define _transmit_on    xmit_on
X#endif
X
X#ifdef TERMIOS
Xstruct termios _raw_tty,
X           _original_tty;
X#define    ttgetattr(fd,where)    tcgetattr((fd),(where))
X#define    ttsetattr(fd,where)    tcsetattr((fd),TCSADRAIN,(where))
X#else    /*TERMIOS*/
X# ifdef TERMIO
Xstruct termio _raw_tty,
X              _original_tty;
X#define    ttgetattr(fd,where)    ioctl((fd),TCGETA,(where))
X#define    ttsetattr(fd,where)    ioctl((fd),TCSETAW,(where))
X# else
Xstruct sgttyb _raw_tty,
X          _original_tty;
X#define    ttgetattr(fd,where)    ioctl((fd),TIOCGETP,(where))
X#define    ttsetattr(fd,where)    ioctl((fd),TIOCSETP,(where))
X# endif    /*TERMIO*/
X#endif    /*TERMIOS*/
X
Xstatic int _inraw = 0;                  /* are we IN rawmode?    */
X
X#define DEFAULT_LINES_ON_TERMINAL    24
X#define DEFAULT_COLUMNS_ON_TERMINAL    80
X
Xstatic int _memory_locked = 0;        /* are we IN memlock??   */
Xstatic int _line  = -1,            /* initialize to "trash" */
X           _col   = -1;
X
Xstatic int _intransmit;            /* are we transmitting keys? */
X
Xstatic
Xchar *_clearscreen, *_moveto, *_up, *_down, *_right, *_left,
X     *_setbold, *_clearbold, *_setunderline, *_clearunderline,
X     *_sethalfbright, *_clearhalfbright, *_setinverse, *_clearinverse,
X     *_cleartoeoln, *_cleartoeos, *_transmit_on, *_transmit_off,
X     *_set_memlock, *_clear_memlock;
X
Xstatic int _lines, _columns, _automargin, _eatnewlineglitch;
Xint tabspacing;
X
Xstatic char _terminal[1024];              /* Storage for terminal entry */
Xstatic char _capabilities[1024];           /* String for cursor motion */
X
Xstatic char *ptr = _capabilities;    /* for buffering         */
X
Xint    outchar();            /* char output for tputs */
Xchar  *tgetstr(),                    /* Get termcap capability */
X      *tgoto();                /* and the goto stuff    */
X
XInitScreen()
X{
X    /* Set up all this fun stuff: returns zero if all okay, or;
X        -1 indicating no terminal name associated with this shell,
X        -2..-n  No termcap for this terminal type known
X   */
X
X    int  tgetent(),      /* get termcap entry */
X         err;
X    char termname[40];
X    char *strcpy(), *getenv();
X
X    if (getenv("TERM") == NULL) return(-1);
SHAR_EOF
echo "End of part 12"
echo "File src/curses.c is continued in part 13"
echo "13" > s2_seq_.tmp
exit 0

exit 0 # Just in case...