rsalz@uunet.uu.net (Rich Salz) (04/12/89)
Submitted-by: dsinc!syd@uunet.UU.NET (Syd Weinstein)
Posting-number: Volume 18, Issue 90
Archive-name: elm2.2/part11
#!/bin/sh
# this is part 11 of a multipart archive
# do not concatenate these parts, unpack them in order with /bin/sh
# file src/addr_util.c continued
#
CurArch=11
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 $Scheck next!"
exit 1;
else exit 0; fi
) < s2_seq_.tmp || exit 1
echo "x - Continuing file src/addr_util.c"
sed 's/^X//' << 'SHAR_EOF' >> src/addr_util.c
X/**
X get_return_name(address, mail_to, FALSE);
X**/
X }
X
X bufptr = (char *) NULL; /* set to null */
X }
X }
X
X return;
X}
SHAR_EOF
echo "File src/addr_util.c is complete"
chmod 0444 src/addr_util.c || echo "restore of src/addr_util.c fails"
echo "x - extracting src/alias.c (Text)"
sed 's/^X//' << 'SHAR_EOF' > src/alias.c &&
X
Xstatic char rcsid[] = "@(#)$Id: alias.c,v 2.14 89/03/30 10:25:28 syd Exp $";
X
X/*******************************************************************************
X * The Elm Mail System - $Revision: 2.14 $ $State: Exp $
X *
X * Copyright (c) 1986, 1987 Dave Taylor
X * Copyright (c) 1988, 1989 USENET Community Trust
X *******************************************************************************
X * Bug reports, patches, comments, suggestions should be sent to:
X *
X * Syd Weinstein, Elm Coordinator
X * elm@dsinc.UUCP dsinc!elm
X *
X *******************************************************************************
X * $Log: alias.c,v $
X * Revision 2.14 89/03/30 10:25:28 syd
X * Check variable value for being in valid range before using to prevent
X * segmentation violation.
X * From: Rob Bernardo <rob@pbhyf.PacBell.COM>
X *
X * Revision 2.13 89/03/25 21:45:42 syd
X * Initial 2.2 Release checkin
X *
X *
X ******************************************************************************/
X
X/** This file contains alias stuff
X
X**/
X
X#include "headers.h"
X#include <errno.h>
X
X#ifdef BSD
X#undef tolower
X#endif
X
X#define ECHOIT 1 /* echo on for prompting */
X
Xchar *expand_group(), *get_alias_address(), *expand_system(), *get_token();
Xchar *error_name(), *error_description(), *strip_parens();
X
Xunsigned long sleep();
X
Xextern int errno;
X
Xextern int findnode_has_been_initialized;
X
Xread_alias_files()
X{
X /** read the system and user alias files, if present.
X Set the flags 'systemfiles' and 'userfiles' accordingly.
X **/
X
X char fname[SLEN];
X int hash;
X
X if ((hash = open(system_hash_file, O_RDONLY)) == -1) {
X dprint(2, (debugfile,
X "Warning: Can't read system hash file %s\n", system_hash_file));
X goto user;
X }
X
X read(hash, (char *) system_hash_table, sizeof system_hash_table);
X close(hash);
X
X /* and data file opened.. */
X
X if ((system_data = open(system_data_file, O_RDONLY)) == -1) {
X dprint(1, (debugfile,
X "Warning: Can't read system data file %s\n", system_data_file));
X goto user;
X }
X
X system_files++; /* got the system files! */
X
Xuser: sprintf(fname, "%s/%s", home, ALIAS_HASH);
X
X if ((hash = open(fname, O_RDONLY)) == -1) {
X dprint(2,(debugfile, "Warning: Can't read user hash file %s\n",
X fname));
X return;
X }
X
X read(hash, (char *) user_hash_table, sizeof user_hash_table);
X close(hash);
X
X sprintf(fname, "%s/%s", home, ALIAS_DATA);
X
X if ((user_data = open(fname, O_RDONLY)) == -1) {
X dprint(1, (debugfile,
X "Warning: can't read user data file %s\n", fname));
X return;
X }
X
X user_files++; /* got user files too! */
X}
X
Xint
Xadd_alias()
X{
X /** add an alias to the user alias text file. Return zero
X if alias not added in actuality **/
X
X char name[SLEN], *address, address1[LONG_STRING], buffer[LONG_STRING];
X char comment[SLEN], ch;
X char *strcpy();
X
X strcpy(buffer, "Enter alias name: ");
X PutLine0(LINES-2,0, buffer);
X CleartoEOLN();
X *name = '\0';
X optionally_enter(name, LINES-2, strlen(buffer), FALSE, FALSE);
X if (strlen(name) == 0)
X return(0);
X if ((address = get_alias_address(name, 0, 0)) != NULL) {
X dprint(3, (debugfile,
X "Attempt to add a duplicate alias [%s] in add_alias\n",
X address));
X if (address[0] == '!') {
X address[0] = ' ';
X error1("Already a group with name %s.", address);
X }
X else
X error1("Already an alias for %s.", address);
X return(0);
X }
X
X sprintf(buffer, "Enter full name for %s: ", name);
X PutLine0(LINES-2,0, buffer);
X CleartoEOLN();
X *comment = '\0';
X optionally_enter(comment, LINES-2, strlen(buffer), FALSE, FALSE);
X if (strlen(comment) == 0) strcpy(comment, name);
X
X sprintf(buffer, "Enter address for %s: ", name);
X PutLine0(LINES-2,0, buffer);
X CleartoEOLN();
X *address1 = '\0';
X optionally_enter(address1, LINES-2, strlen(buffer), FALSE, FALSE);
X Raw(ON);
X if (strlen(address1) == 0) {
X error("No address specified!");
X return(0);
X }
X PutLine3(LINES-2,0,"%s (%s) = %s", comment, name, address1);
X CleartoEOLN();
X if((ch = want_to("Accept new alias? (y/n) ",'y')) == 'y')
X add_to_alias_text(name, comment, address1);
X ClearLine(LINES-2);
X return(ch == 'y' ? 1 : 0);
X}
X
Xint
Xdelete_alias()
X{
X /** delete an alias from the user alias text file. Return zero
X if alias not deleted in actuality **/
X
X char name[SLEN], *address, buffer[LONG_STRING];
X char *strcpy();
X
X strcpy(buffer, "Enter alias name for deletion: ");
X PutLine0(LINES-2,0, buffer);
X CleartoEOLN();
X *name = '\0';
X optionally_enter(name, LINES-2, strlen(buffer), FALSE, FALSE);
X if (strlen(name) == 0)
X return(0);
X if ((address = get_alias_address(name, 0, 0))!=NULL)
X {
X if (address[0] == '!')
X {
X address[0] = ' ';
X PutLine1(LINES-1,0,"Group alias: %-60.60s", address);
X CleartoEOLN();
X }
X else
X PutLine1(LINES-1,0,"Aliased address: %-60.60s", address);
X }
X else
X {
X dprint(3, (debugfile,
X "Attempt to delete a non-existent alias [%s] in delete_alias\n",
X name));
X error1("No alias for %s.", name);
X return(0);
X }
X if (want_to("Delete this alias? (y/n) ", 'y') == 'y')
X {
X if (!delete_from_alias_text(name))
X {
X CleartoEOS();
X return(1);
X }
X }
X CleartoEOS();
X return(0);
X}
X
Xint
Xadd_current_alias()
X{
X /** alias the current message to the specified name and
X add it to the alias text file, for processing as
X the user leaves the program. Returns non-zero iff
X alias actually added to file **/
X
X char name[SLEN], address1[LONG_STRING], buffer[LONG_STRING], *address;
X char comment[SLEN], ch;
X struct header_rec *current_header;
X
X if (current == 0) {
X dprint(4, (debugfile,
X "Add current alias called without any current message!\n"));
X error("No message to alias to!");
X return(0);
X }
X current_header = headers[current - 1];
X
X strcpy(buffer, "Current message address aliased to: ");
X PutLine0(LINES-2,0, buffer);
X CleartoEOLN();
X *name = '\0';
X optionally_enter(name, LINES-2, strlen(buffer), FALSE, FALSE);
X if (strlen(name) == 0) /* cancelled... */
X return(0);
X if ((address = get_alias_address(name, 0, 0)) != NULL) {
X dprint(3, (debugfile,
X "Attempt to add a duplicate alias [%s] in add_current_alias\n",
X address));
X if (address[1] == '!') {
X address[0] = ' ';
X error1("Already a group with name %s.", address);
X }
X else
X error1("Already an alias for %s.", address);
X return(0);
X }
X
X sprintf(buffer, "Enter full name for %s: ", name);
X PutLine0(LINES-2,0, buffer);
X CleartoEOLN();
X
X /* use full name in current message for default comment */
X tail_of(current_header->from, comment, current_header->to);
X if(strchr(comment, '!') || strchr(comment, '@'))
X /* never mind - it's an address not a full name */
X *comment = '\0';
X
X optionally_enter(comment, LINES-2, strlen(buffer), FALSE, FALSE);
X
X /* grab the return address of this message */
X get_return(address1, current-1);
X
X /* if this is from the use (a saved copy) use the 'to' addrs instead */
X get_return_name(address1, buffer, TRUE);
X if(strcmp(buffer, username) == 0)
X get_existing_address(address1, current-1);
X
X strcpy(address1, strip_parens(address1)); /* remove parens! */
X#ifdef OPTIMIZE_RETURN
X optimize_return(address1);
X#endif
X PutLine3(LINES-2,0,"%s (%s) = %s", comment, name, address1);
X CleartoEOLN();
X if((ch = want_to("Accept new alias? (y/n) ",'y')) == 'y')
X add_to_alias_text(name, comment, address1);
X ClearLine(LINES-2);
X return(ch == 'y' ? 1 : 0);
X}
X
Xadd_to_alias_text(name, comment, address)
Xchar *name, *comment, *address;
X{
X /** Add the data to the user alias text file. Return zero if we
X succeeded, 1 if not **/
X
X FILE *file;
X char fname[SLEN];
X
X sprintf(fname,"%s/%s", home, ALIAS_TEXT);
X
X save_file_stats(fname);
X if ((file = fopen(fname, "a")) == NULL) {
X dprint(2, (debugfile,
X "Failure attempting to add alias to file %s within %s",
X fname, "add_to_alias_text"));
X dprint(2, (debugfile, "** %s - %s **\n", error_name(errno),
X error_description(errno)));
X error1("Couldn't open %s to add new alias!", fname);
X return(1);
X }
X
X fprintf(file,"%s = %s = %s\n", name, comment, address);
X fclose(file);
X
X restore_file_stats(fname);
X
X return(0);
X}
X
Xdelete_from_alias_text(name)
Xchar *name;
X{
X /** Delete the data from the user alias text file. Return zero if we
X succeeded, 1 if not **/
X
X FILE *file, *tmpfile;
X char fname[SLEN], tmpfname[SLEN];
X char line_in_file[SLEN+3+SLEN+3+LONG_STRING]; /* name = comment = address */
X char name_with_equals[SLEN+2];
X
X strcpy(name_with_equals, name);
X strcat(name_with_equals, " =");
X
X sprintf(fname,"%s/%s", home, ALIAS_TEXT);
X sprintf(tmpfname,"%s/%s.tmp", home, ALIAS_TEXT);
X
X save_file_stats(fname);
X
X if ((file = fopen(fname, "r")) == NULL) {
X dprint(2, (debugfile,
X "Failure attempting to delete alias from file %s within %s",
X fname, "delete_from_alias_text"));
X dprint(2, (debugfile, "** %s - %s **\n", error_name(errno),
X error_description(errno)));
X error1("Couldn't open %s to delete alias!", fname);
X return(1);
X }
X
X if ((tmpfile = fopen(tmpfname, "w")) == NULL) {
X dprint(2, (debugfile,
X "Failure attempting to open temp file %s within %s",
X tmpfname, "delete_from_alias_text"));
X dprint(2, (debugfile, "** %s - %s **\n", error_name(errno),
X error_description(errno)));
X error1("Couldn't open tempfile %s to delete alias!", tmpfname);
X return(1);
X }
X
X while (fgets(line_in_file, sizeof(line_in_file), file) != (char *)NULL)
X {
X if (strncmp(name_with_equals, line_in_file,
X strlen(name_with_equals)) != 0)
X fprintf(tmpfile,"%s", line_in_file);
X }
X fclose(file);
X fclose(tmpfile);
X if (rename(tmpfname, fname) != 0)
X {
X error1("Couldn't rename tempfile %s after deleting alias!", tmpfname);
X return(1);
X }
X
X restore_file_stats(fname);
X
X return(0);
X}
X
Xshow_alias_menu()
X{
X MoveCursor(LINES-7,0); CleartoEOS();
X
X PutLine0(LINES-7,COLUMNS-45, "Alias commands");
X Centerline(LINES-6,
X "a)lias current message, d)elete an alias, check a p)erson or s)ystem,");
X Centerline(LINES-5,
X "l)ist existing aliases, m)ake new alias, or r)eturn");
X}
X
Xalias()
X{
X /** work with alias commands... **/
X /** return non-0 if main part of screen overwritten, else 0 **/
X
X char name[NLEN], *address, ch, buffer[SLEN];
X int newaliases = 0, redraw = 0;
X
X if (mini_menu)
X show_alias_menu();
X
X /** now let's ensure that we've initialized everything! **/
X
X#ifndef DONT_TOUCH_ADDRESSES
X
X if (! findnode_has_been_initialized) {
X if (warnings)
X error("Initializing internal tables...");
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#endif
X
X define_softkeys(ALIAS);
X
X while (1) {
X prompt("Alias: ");
X CleartoEOLN();
X ch = ReadCh();
X MoveCursor(LINES-1,0); CleartoEOS();
X
X dprint(3, (debugfile, "\n-- Alias command: %c\n\n", ch));
X
X switch (tolower(ch)) {
X case '?': redraw += alias_help(); break;
X
X case 'a': newaliases += add_current_alias(); break;
X case 'd': if (delete_alias()) install_aliases(); break;
X case 'l': display_aliases();
X redraw++;
X if (mini_menu) show_alias_menu();
X break;
X case 'm': newaliases += add_alias(); break;
X
X case RETURN:
X case LINE_FEED:
X case 'q':
X case 'x':
X case 'r': if (newaliases) install_aliases();
X clear_error();
X return(redraw);
X case 'p': if (newaliases)
X error("Warning: new aliases not installed yet!");
X
X strcpy(buffer, "Check for person: ");
X PutLine0(LINES-2,0, buffer);
X CleartoEOLN();
X *name = '\0';
X optionally_enter(name, LINES-2, strlen(buffer),
X FALSE, FALSE);
X
X if ((address = get_alias_address(name, 0, 0))!=NULL) {
X if (address[0] == '!') {
X address[0] = ' ';
X PutLine1(LINES-1,0,"Group alias:%-60.60s", address);
X CleartoEOLN();
X }
X else
X PutLine1(LINES-1,0,"Aliased address: %-60.60s",
X address);
X }
X else
X error("Not found.");
X break;
X
X case 's': strcpy(buffer, "Check for system: ");
X PutLine0(LINES-2,0, buffer);
X CleartoEOLN();
X *name = '\0';
X optionally_enter(name, LINES-2, strlen(buffer),
X FALSE, FALSE);
X if (talk_to(name))
X#ifdef INTERNET
X PutLine1(LINES-1,0,
X "You have a direct connection. The address is USER@%s.",
X name);
X#else
X PutLine1(LINES-1,0,
X "You have a direct connection. The address is %s!USER.",
X name);
X#endif
X else {
X sprintf(buffer, "USER@%s", name);
X#ifdef DONT_TOUCH_ADDRESSES
X address = buffer;
X#else
X address = expand_system(buffer, FALSE);
X#endif
X if (strlen(address) > strlen(name) + 7)
X PutLine1(LINES-1,0,"Address is: %.65s", address);
X else
X error1("Couldn't expand system %s.", name);
X }
X break;
X
X case '@': strcpy(buffer, "Fully expand alias: ");
X PutLine0(LINES-2,0, buffer);
X CleartoEOS();
X *name = '\0';
X optionally_enter(name, LINES-2, strlen(buffer),
X FALSE, FALSE);
X if ((address = get_alias_address(name, 1, 0)) != NULL) {
X ClearScreen();
X PutLine1(3,0,"Aliased address:\n\r%s", address);
X PutLine0(LINES-1,0,"Press <return> to continue.");
X (void) getchar();
X redraw++;
X }
X else
X error("Not found.");
X if (mini_menu) show_alias_menu();
X break;
X default : error("Invalid input!");
X }
X }
X}
X
Xinstall_aliases()
X{
X /** run the 'newalias' program and update the
X aliases before going back to the main program!
X **/
X
X
X error("Updating aliases...");
X sleep(2);
X
X if (system_call(newalias, SH, FALSE) == 0) {
X error("Re-reading the database in...");
X sleep(2);
X read_alias_files();
X set_error("Aliases updated successfully.");
X }
X else
X set_error("'Newalias' failed. Please check alias_text.");
X}
X
Xalias_help()
X{
X /** help section for the alias menu... **/
X /** return non-0 if main part of screen overwritten, else 0 */
X
X char ch;
X int redraw=0;
X
X MoveCursor(LINES-3, 0); CleartoEOS();
X
X if (! mini_menu)
X lower_prompt("Key you want help for: ");
X else {
X Centerline(LINES-3,
X"Enter key you want help for, '?' for list or '.' to leave help");
X lower_prompt("Key: ");
X }
X
X while ((ch = ReadCh()) != '.') {
X ch = tolower(ch);
X switch(ch) {
X case '?' : display_helpfile(ALIAS_HELP);
X redraw++;
X if (mini_menu) show_alias_menu();
X return(redraw);
X case 'a': error(
X "a = Add (return) address of current message to alias database.");
X break;
X case 'd': error("d = Delete a user alias from alias database.");
X break;
X case 'l': error("l = List all aliases in database.");
X break;
X case 'm': error(
X "m = Make a new user alias, adding to alias database when done.");
X break;
X
X case RETURN:
X case LINE_FEED:
X case 'q':
X case 'x':
X case 'r': error("Return from alias menu.");
X break;
X
X case 'p': error("p = Check for a person in the alias database.");
X break;
X
X case 's': error(
X "s = Check for a system in the host routing/domain database.");
X break;
X
X default : error("That key isn't used in this section.");
X break;
X }
X if (! mini_menu)
X lower_prompt("Key you want help for: ");
X else
X lower_prompt("Key: ");
X }
X return(redraw);
X}
X
Xdisplay_aliases()
X{
X char fname[SLEN];
X
X sprintf(fname,"%s/%s", home, ALIAS_TEXT);
X display_file(fname);
X ClearScreen();
X return;
X}
SHAR_EOF
chmod 0444 src/alias.c || echo "restore of src/alias.c fails"
echo "x - extracting src/aliasdb.c (Text)"
sed 's/^X//' << 'SHAR_EOF' > src/aliasdb.c &&
X
Xstatic char rcsid[] = "@(#)$Id: aliasdb.c,v 2.8 89/03/25 21:45:45 syd Exp $";
X
X/*******************************************************************************
X * The Elm Mail System - $Revision: 2.8 $ $State: Exp $
X *
X * Copyright (c) 1986, 1987 Dave Taylor
X * Copyright (c) 1988, 1989 USENET Community Trust
X *******************************************************************************
X * Bug reports, patches, comments, suggestions should be sent to:
X *
X * Syd Weinstein, Elm Coordinator
X * elm@dsinc.UUCP dsinc!elm
X *
X *******************************************************************************
X * $Log: aliasdb.c,v $
X * Revision 2.8 89/03/25 21:45:45 syd
X * Initial 2.2 Release checkin
X *
X *
X ******************************************************************************/
X
X/** Alias database files...
X
X**/
X
X
X#include "headers.h"
X
X#include <sys/types.h>
X#include <sys/stat.h>
X#include <errno.h>
X
Xextern int errno;
X
X#ifdef USE_DBM
X# include <dbm.h>
X#endif
X
X#define absolute(x) ((x) > 0 ? x : -(x))
X
Xchar *shift_lower(), *find_path_to(), *strcat(), *strcpy();
Xunsigned long sleep();
X
Xint findnode_has_been_initialized = FALSE;
X
Xfindnode(name, display_error)
Xchar *name;
Xint display_error;
X{
X /** break 'name' into machine!user or user@machine and then
X see if you can find 'machine' in the path database..
X If so, return name as the expanded address. If not,
X return what was given to us! If display_error, then
X do so...
X **/
X
X#ifndef DONT_TOUCH_ADDRESSES
X
X char old_name[SLEN];
X char address[SLEN];
X
X if (strlen(name) == 0)
X return;
X
X if (! findnode_has_been_initialized) {
X if (warnings)
X error("Initializing internal tables...");
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
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 "joe%xerox.parc@Xerox.ARPA")!
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#endif
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}
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
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
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
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 2.5 89/03/25 21:45:46 syd Exp $";
X
X/*******************************************************************************
X * The Elm Mail System - $Revision: 2.5 $ $State: Exp $
X *
X * Copyright (c) 1986, 1987 Dave Taylor
X * Copyright (c) 1988, 1989 USENET Community Trust
X *******************************************************************************
X * Bug reports, patches, comments, suggestions should be sent to:
X *
X * Syd Weinstein, Elm Coordinator
X * elm@dsinc.UUCP dsinc!elm
X *
X *******************************************************************************
X * $Log: aliaslib.c,v $
X * Revision 2.5 89/03/25 21:45:46 syd
X * Initial 2.2 Release checkin
X *
X *
X ******************************************************************************/
X
X/** Library of functions dealing with the alias system...
X
X **/
X
X#include "headers.h"
X
Xchar *expand_group(), *get_alias_address(), *expand_system();
Xchar *get_token(), *strpbrk();
Xlong lseek();
X
Xchar *get_alias_address(name, mailing, depth)
Xchar *name;
Xint mailing, depth;
X{
X /** return the line from either datafile that corresponds
X to the specified name. If 'mailing' specified, then
X fully expand group names. Depth specifies the nesting
X depth - the routine should always initially be called
X with this equal 0. Returns NULL if not found **/
X
X static char buffer[VERY_LONG_STRING];
X int loc;
X
X if (strlen(name) == 0)
X return( (char *) NULL);
X
X if (! read_in_aliases) {
X read_alias_files();
X read_in_aliases = TRUE;
X }
X
X if (user_files)
X if ((loc = find(name, user_hash_table, MAX_UALIASES)) >= 0) {
X lseek(user_data, user_hash_table[loc].byte, 0L);
X get_line(user_data, buffer);
X if (buffer[0] == '!' && mailing)
X return(expand_group(buffer, depth));
X else if (strpbrk(buffer,"!@:") != NULL) /* has a hostname */
X#ifdef DONT_TOUCH_ADDRESSES
X return((char *) buffer);
X#else
X return(expand_system(buffer, TRUE));
X#endif
X else
X return((char *) buffer);
X }
X
X if (system_files)
X if ((loc = find(name, system_hash_table, MAX_SALIASES)) >= 0) {
X lseek(system_data, system_hash_table[loc].byte, 0L);
X get_line(system_data, buffer);
X if (buffer[0] == '!' && mailing)
X return(expand_group(buffer, depth));
X else if (strpbrk(buffer,"!@:") != NULL) /* has a hostname */
X#ifdef DONT_TOUCH_ADDRESSES
X return((char *) buffer);
X#else
X return(expand_system(buffer, TRUE));
X#endif
X else
X return((char *) buffer);
X }
X
X return( (char *) NULL);
X}
X
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
Xchar *expand_group(members, depth)
Xchar *members;
Xint depth;
X{
X /** Given a group of names separated by commas, this routine
X will return a string that is the full addresses of each
X member separated by spaces. Depth is an internal counter
X that keeps track of the depth of nesting that the routine
X is in...it's for the get_token routine! **/
X
X static char buffer[VERY_LONG_STRING];
X char buf[LONG_STRING], *word, *address, *bufptr;
X char *strcpy();
X
X strcpy(buf, members); /* parameter safety! */
X if (depth == 0) buffer[0] = '\0'; /* nothing in yet! */
X bufptr = (char *) buf; /* grab the address */
X depth++; /* one deeper! */
X
X while ((word = get_token(bufptr, "!, ", depth)) != NULL) {
X if ((address = get_alias_address(word, 1, depth)) == NULL) {
X if (! valid_name(word)) {
X dprint(3, (debugfile, "Encountered illegal address %s in %s\n",
X word, "expand_group"));
X error1("%s is an illegal address!", word);
X return( (char *) NULL);
X }
X else if (strcmp(buffer, word) != 0)
X sprintf(buffer, "%s%s%s", buffer,
X (strlen(buffer) > 0)? ", ":"", word);
X }
X else if (strcmp(buffer, address) != 0)
X sprintf(buffer,"%s%s%s", buffer,
X (strlen(buffer) > 0)? ", ":"", address);
X
X bufptr = NULL;
X }
X
X return( (char *) buffer);
X}
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 (strcmp(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
Xhash_it(string, table_size)
Xchar *string;
Xint table_size;
X{
X /** compute the hash function of the string, returning
X it (mod table_size) **/
X
X register int i, sum = 0;
X
X for (i=0; string[i] != '\0'; i++)
X sum += (int) string[i];
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 2.9 89/03/25 21:45:48 syd Exp $";
X
X/*******************************************************************************
X * The Elm Mail System - $Revision: 2.9 $ $State: Exp $
X *
X * Copyright (c) 1986, 1987 Dave Taylor
X * Copyright (c) 1988, 1989 USENET Community Trust
X *******************************************************************************
X * Bug reports, patches, comments, suggestions should be sent to:
X *
X * Syd Weinstein, Elm Coordinator
X * elm@dsinc.UUCP dsinc!elm
X *
X *******************************************************************************
X * $Log: args.c,v $
X * Revision 2.9 89/03/25 21:45:48 syd
X * Initial 2.2 Release checkin
X *
X *
X ******************************************************************************/
X
X/** starting argument parsing routines for ELM system...
X
X**/
X
X#include "headers.h"
X
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:Vwz")) != 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 '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 -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}
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 2.3 89/03/25 21:45:49 syd Exp $";
X
X/*******************************************************************************
X * The Elm Mail System - $Revision: 2.3 $ $State: Exp $
X *
X * Copyright (c) 1986, 1987 Dave Taylor
X * Copyright (c) 1988, 1989 USENET Community Trust
X *******************************************************************************
X * Bug reports, patches, comments, suggestions should be sent to:
X *
X * Syd Weinstein, Elm Coordinator
X * elm@dsinc.UUCP dsinc!elm
X *
X *******************************************************************************
X * $Log: bouncebk.c,v $
X * Revision 2.3 89/03/25 21:45:49 syd
X * Initial 2.2 Release checkin
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 2.23 89/03/25 21:45:51 syd Exp $";
X
X/*******************************************************************************
X * The Elm Mail System - $Revision: 2.23 $ $State: Exp $
X *
X * Copyright (c) 1986, 1987 Dave Taylor
X * Copyright (c) 1988, 1989 USENET Community Trust
X *******************************************************************************
X * Bug reports, patches, comments, suggestions should be sent to:
X *
X * Syd Weinstein, Elm Coordinator
X * elm@dsinc.UUCP dsinc!elm
X *
X *******************************************************************************
X * $Log: builtin.c,v $
X * Revision 2.23 89/03/25 21:45:51 syd
X * Initial 2.2 Release checkin
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(!isascii(*iptr)) {
X *optr++ = '?'; /* non ascii */
X *iptr++;
X chars_output++;
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 + '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;
X
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 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 (total_lines_to_display - lines_displayed == 1 ?
X "is" : "are") : ""),
X total_lines_to_display - lines_displayed,
X plural(total_lines_to_display - lines_displayed),
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 */
SHAR_EOF
echo "End of part 11"
echo "File src/builtin.c is continued in part 12"
echo "12" > s2_seq_.tmp
exit 0
--
Please send comp.sources.unix-related mail to rsalz@uunet.uu.net.