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-
- static char rcsid[] = "@(#)$Id: utils.c,v 4.1 90/04/28 22:44:19 syd Exp $";
-
- /*******************************************************************************
- * The Elm Mail System - $Revision: 4.1 $ $State: Exp $
- *
- * Copyright (c) 1986, 1987 Dave Taylor
- * Copyright (c) 1988, 1989, 1990 USENET Community Trust
- *******************************************************************************
- * Bug reports, patches, comments, suggestions should be sent to:
- *
- * Syd Weinstein, Elm Coordinator
- * elm@DSI.COM dsinc!elm
- *
- *******************************************************************************
- * $Log: utils.c,v $
- * Revision 4.1 90/04/28 22:44:19 syd
- * checkin of Elm 2.3 as of Release PL0
- *
- *
- ******************************************************************************/
-
- /** Utility routines for ELM
-
- **/
-
- #include "headers.h"
- #include <sys/types.h>
- #include <sys/stat.h>
- #include <ctype.h>
- #include <errno.h>
-
- #ifdef BSD
- #undef tolower
- #endif
-
- #include <signal.h>
-
- extern int errno;
-
- char *error_name();
- void exit();
-
- create_new_folders()
- {
- /* this creates a new folders directory */
-
- #ifdef MKDIR
- (void) mkdir(folders, 0700);
- #else
- char com[SLEN];
-
- /** Some systems don't have a mkdir call - how inconvienient! **/
-
- sprintf(com, "mkdir %s", folders);
- system_call(com, SH, FALSE, FALSE);
- sprintf(com, "chmod 700 %s", folders);
- system_call(com, SH, FALSE, FALSE);
- #endif /* MKDIR */
-
- chown(folders, userid, groupid);
- }
-
- create_new_elmdir()
- {
- /** this routine is just for allowing new users who don't have the
- old elm files to create a new .elm directory **/
-
- char source[SLEN];
- #ifdef MKDIR
- sprintf(source, "%s/.elm", home);
- (void) mkdir(source, 0700);
- #else
- char com[SLEN];
-
- /** Some systems don't have a mkdir call - how inconvienient! **/
-
- sprintf(com, "mkdir %s/.elm", home);
- system_call(com, SH, FALSE, FALSE);
- sprintf(com, "chmod 700 %s/.elm", home);
- system_call(com, SH, FALSE, FALSE);
- #endif /* MKDIR */
-
- chown( source, userid, groupid);
- }
-
- move_old_files_to_new()
- {
- /** this routine is just for allowing people to transition from
- the old Elm, where things are all kept in their $HOME dir,
- to the new one where everything is in $HOME/.elm... **/
-
- char source[SLEN], dest[SLEN], temp[SLEN];
- char com[SLEN];
-
- /** simply go through all the files... **/
-
- sprintf(source, "%s/.alias_text", home);
- if (access(source, ACCESS_EXISTS) != -1) {
- sprintf(dest, "%s/%s", home, ALIAS_TEXT);
- printf("\n\rCopying from: %s\n\rCopying to: %s\n\r", source, dest);
-
- sprintf(temp, "/tmp/%d", getpid());
- sprintf(com, "%s -e 's/:/=/g' %s > %s\n", sed_cmd, source, temp);
- (void) system_call(com, SH, FALSE, FALSE);
- sprintf(com, "%s %s %s\n", move_cmd, temp, dest);
- (void) system_call(com, SH, FALSE, FALSE);
- (void) system_call("newalias", SH, FALSE, FALSE);
- }
-
- sprintf(source, "%s/.elmheaders", home);
- if (access(source, ACCESS_EXISTS) != -1) {
- sprintf(dest, "%s/%s", home, mailheaders);
- printf("\n\rCopying from: %s\n\rCopying to: %s\n\r", source, dest);
- copy(source, dest);
- }
-
- sprintf(source, "%s/.elmrc", home);
- if (access(source, ACCESS_EXISTS) != -1) {
- sprintf(dest, "%s/%s", home, elmrcfile);
- printf("\n\rCopying from: %s\n\rCopying to: %s\n\r", source, dest);
- copy(source, dest);
- }
-
- printf(
- "\n\rWelcome to the new version of ELM!\n\n\rHit return to continue.");
- getchar();
- }
-
- emergency_exit()
- {
- /** used in dramatic cases when we must leave without altering
- ANYTHING about the system... **/
- char *mk_lockname();
-
- dprint(1, (debugfile,
- "\nERROR: Something dreadful is happening! Taking emergency exit!!\n\n"));
- dprint(1, (debugfile,
- " possibly leaving behind the following files;\n"));
- dprint(1, (debugfile,
- " The mailbox tempfile : %s\n", cur_tempfolder));
- if(folder_type == SPOOL) dprint(1, (debugfile,
- " The mailbox lock file: %s\n", mk_lockname(cur_folder)));
- dprint(1, (debugfile,
- " The composition file : %s%s%d\n", temp_dir, temp_file, getpid()));
- dprint(1, (debugfile,
- " The readmsg data file: %s/%s\n", home, readmsg_file));
-
- Raw(OFF);
- if (cursor_control) transmit_functions(OFF);
- if (hp_terminal) softkeys_off();
-
- if (cursor_control)
- MoveCursor(LINES, 0);
-
- PutLine0(LINES,0,
- "\nEmergency exit taken! All temp files intact!\n\n");
-
- exit(1);
- }
- rm_temps_exit()
- {
- char buffer[SLEN];
- PutLine0(LINES,0,
- "\nWrite to temp file failed, exiting leaving mailbox intact!\n\n");
- dprint(2, (debugfile, "\nrm_temps_exit, deleteing temp files\n"));
- Raw(OFF);
- if (cursor_control) transmit_functions(OFF);
- if (hp_terminal) softkeys_off();
- sprintf(buffer,"%s%d",temp_file, getpid()); /* editor buffer */
- (void) unlink(buffer);
- if (folder_type == SPOOL) {
- (void) unlink(cur_tempfolder);
- }
- sprintf(buffer,"%s/%s", home, readmsg_file); /* readmsg temp */
- (void) unlink(buffer);
- unlock(); /* remove lock file if any */
- if(!batch_only) {
- MoveCursor(LINES,0);
- NewLine();
- }
- exit(1);
- }
-
- /*ARGSUSED*/
- /*VARARGS0*/
-
- leave(val)
- int val; /* not used, placeholder for signal catching! */
- {
- char buffer[SLEN];
-
- dprint(2, (debugfile, "\nLeaving mailer normally (leave)\n"));
-
- Raw(OFF);
- if (cursor_control) transmit_functions(OFF);
- if (hp_terminal) softkeys_off();
-
- sprintf(buffer,"%s%s%d", temp_dir, temp_file, getpid()); /* editor buffer */
- (void) unlink(buffer);
-
- if (folder_type == SPOOL) {
- (void) unlink(cur_tempfolder);
- }
-
- sprintf(buffer,"%s/%s", home, readmsg_file); /* readmsg temp */
- (void) unlink(buffer);
-
- unlock(); /* remove lock file if any */
-
- if(!batch_only) {
- MoveCursor(LINES,0);
- NewLine();
- }
-
- exit(0);
- }
-
- silently_exit()
- {
- /** This is the same as 'leave', but it doesn't remove any non-pid
- files. It's used when we notice that we're trying to create a
- temp mail file and one already exists!!
- **/
- char buffer[SLEN];
-
- dprint(2, (debugfile, "\nLeaving mailer quietly (silently_exit)\n"));
-
- Raw(OFF);
- if (cursor_control) transmit_functions(OFF);
- if (hp_terminal) softkeys_off();
-
- sprintf(buffer,"%s%s%d", temp_dir, temp_file, getpid()); /* editor buffer */
- (void) unlink(buffer);
-
- MoveCursor(LINES,0);
- NewLine();
-
- exit(0);
- }
-
- /*ARGSUSED0*/
-
- #ifndef REMOVE_AT_LAST
- leave_locked(val)
- int val; /* not used, placeholder for signal catching! */
- {
- /** same as leave routine, but don't disturb lock file **/
-
- char buffer[SLEN];
-
- dprint(3, (debugfile,
- "\nLeaving mailer due to presence of lock file (leave_locked)\n"));
-
- Raw(OFF);
- if (cursor_control) transmit_functions(OFF);
- if (hp_terminal) softkeys_off();
-
- sprintf(buffer,"%s%s%d", temp_dir, temp_file, getpid()); /* editor buffer */
- (void) unlink(buffer);
-
- (void) unlink(cur_tempfolder); /* temp mailbox */
-
- MoveCursor(LINES,0);
- NewLine();
- exit(0);
- }
- #endif
-
- int
- get_page(msg_pointer)
- int msg_pointer;
- {
- /** Ensure that 'current' is on the displayed page,
- returning NEW_PAGE iff the page changed! **/
-
- register int first_on_page, last_on_page;
-
- first_on_page = (header_page * headers_per_page) + 1;
-
- last_on_page = first_on_page + headers_per_page - 1;
-
- if (selected) /* but what is it on the SCREEN??? */
- msg_pointer = compute_visible(msg_pointer);
-
- if (selected && msg_pointer > selected)
- return(SAME_PAGE); /* too far - page can't change! */
-
- if (msg_pointer > last_on_page) {
- header_page = (int) (msg_pointer-1)/ headers_per_page;
- return(NEW_PAGE);
- }
- else if (msg_pointer < first_on_page) {
- header_page = (int) (msg_pointer-1) / headers_per_page;
- return(NEW_PAGE);
- }
- else
- return(SAME_PAGE);
- }
-
- char *nameof(filename)
- char *filename;
- {
- /** checks to see if 'filename' has any common prefixes, if
- so it returns a string that is the same filename, but
- with '=' as the folder directory, or '~' as the home
- directory..
- **/
-
- static char buffer[STRING];
- register int i = 0, iindex = 0;
-
- if (strncmp(filename, folders, strlen(folders)) == 0) {
- if (strlen(folders) > 0) {
- buffer[i++] = '=';
- iindex = strlen(folders);
- if(filename[iindex] == '/')
- iindex++;
- }
- }
- else if (strncmp(filename, home, strlen(home)) == 0) {
- if (strlen(home) > 1) {
- buffer[i++] = '~';
- iindex = strlen(home);
- }
- }
- else iindex = 0;
-
- while (filename[iindex] != '\0')
- buffer[i++] = filename[iindex++];
- buffer[i] = '\0';
-
- return( (char *) buffer);
- }
-