sources-request@mirror.UUCP (06/30/86)
Submitted by: Dave Taylor <pyramid!hplabs!hpldat!taylor>
Mod.sources: Volume 6, Issue 32
Archive-name: elm/Part07
# Continuation of Shell Archive, created by hpldat!taylor
# This is part 7
# To unpack the enclosed files, please use this file as input to the
# Bourne (sh) shell. This can be most easily done by the command;
# sh < thisfilename
if [ ! -d src ]
then
echo creating directory src
mkdir src
fi
# ---------- file src/newmbox.c ----------
filename="src/newmbox.c"
if [ -f $filename ]
then
echo File \"$filename\" already exists\! Skipping...
filename=/dev/null # throw it away
else
echo extracting file src/newmbox.c...
fi
cat << 'END-OF-FILE' > $filename
/** newmbox.c **/
/** read new mailbox file, (C) Copyright 1986 by Dave Taylor **/
#include <ctype.h>
#ifdef BSD
#undef tolower /* we have our own "tolower" routine instead! */
#endif
#include "headers.h"
#include <sys/types.h>
#include <sys/stat.h>
#include <errno.h>
#ifdef BSD /* Berkeley has library elsewhere... */
# include <sys/time.h>
#else
# include <time.h>
#endif
extern int errno;
char *error_name(), error_description();
int
newmbox(stat, resync, main_screen)
int stat, resync, main_screen;
{
/** Read a new mailbox file or resync on current file.
Values of stat and what they mean;
stat = 0 - changing mailboxes from within program
stat = 1 - read default mailbox or infile for the
first time
stat = 2 - read existing mailbox, new mail arrived
resync is TRUE iff we know the current mailbox has changed. If
it's set to true this means that we MUST READ SOMETHING, even
if it's the current mailbox again!!
main_screen simply tells where the counting line should be.
**/
int switching_to_default = 0;
char buff[SLEN];
if (stat > 0) {
if (strlen(infile) == 0) /* no filename yet?? */
sprintf(infile,"%s%s",mailhome, username);
if ((errno = can_access(infile, READ_ACCESS))) {
error2("Can't open mailbox '%s' for reading [%s]", infile,
error_name(errno));
exit(1);
}
}
else { /* get name of new mailbox! */
MoveCursor(LINES-3, 30);
CleartoEOS();
show_last_error();
PutLine0(LINES-2,0,"Name of new mailbox: ");
buff[0] = '\0';
(void) optionally_enter(buff, LINES-2, 21, FALSE);
ClearLine(LINES-2);
if (strlen(buff) == 0) {
if (resync && file_changed)
strcpy(buff, infile);
else
return(FALSE);
}
if (strcmp(buff, "!") == 0 ||
strcmp(buff, "%") == 0) /* go to mailbox */
sprintf(buff,"%s%s", mailhome, username);
else if (! expand_filename(buff)) {
error1("can't expand file %s", buff);
if (resync && file_changed)
strcpy(buff, infile);
else
return(FALSE);
}
if (strcmp(buff, infile) == 0 && ! resync) {
dprint0(3,"User requested change to current mailbox! (newmbox)\n");
error("already reading that mailbox!");
return(FALSE);
}
if (first_word(buff, mailhome) && ! resync) { /* a mail file! */
mbox_specified = 0; /* fake program to think that */
stat = 1; /* we're the default file */
switching_to_default++; /* remember this act! */
}
if ((errno = can_access(buff, READ_ACCESS))) {
dprint2(2,"Error: attempt to open %s as mailbox denied (%s)!\n",
buff, "newmbox");
error1("Permission to open file %s denied", buff);
if (resync && file_changed)
strcpy(buff, infile);
else
return(FALSE);
}
if (resync && file_changed && strcmp(buff, infile) == 0)
PutLine0(LINES-2,COLUMNS-40,"Resynchronizing file");
else
PutLine1(LINES-2,COLUMNS-40,"Mailbox: %s", buff);
CleartoEOLN();
strcpy(infile,buff);
if (! switching_to_default) mbox_specified = 1;
}
clear_error();
clear_central_message();
header_page = 0;
(void) fclose(mailfile); /* close it first, to avoid too many open */
if ((mailfile = fopen(infile,"r")) == NULL)
message_count = 0;
else if (stat < 2) { /* new mail file! */
current = 1;
if (notesfile)
message_count = read_notesfile(); /* can't get new notes! */
else
message_count = read_headers(FALSE, main_screen);
if (! message_count) current = 0;
}
else /* resync with current mail file */
message_count = read_headers(TRUE, main_screen);
return(TRUE);
}
int
read_headers(rereading, main_screen)
int rereading, main_screen;
{
/** Reads the headers into the header_table structure and leaves
the file rewound for further I/O requests. If the file being
read is the default mailbox (ie incoming) then it is copied to
a temp file and closed, to allow more mail to arrive during
the elm session. If 'rereading' is set, the program will copy
the status flags from the previous data structure to the new
one if possible. This is (obviously) for re-reading a mailfile!
**/
FILE *temp;
char buffer[LONG_STRING], temp_filename[SLEN];
long bytes = 0L, line_bytes = 0L;
register int line = 0, count = 0, subj = 0, copyit = 0, in_header = 1;
int count_x, count_y = 17, new_messages = 0, err;
int in_to_list = FALSE;
static int first_read = 0;
if (! first_read++) {
ClearLine(LINES-1);
ClearLine(LINES);
if (rereading)
PutLine1(LINES, 0, "Reading in %s, message: %d", infile,
message_count);
else
PutLine1(LINES, 0, "Reading in %s, message: 0", infile);
count_x = LINES;
count_y = 22 + strlen(infile);
}
else {
count_x = LINES-2;
if (main_screen)
PutLine0(LINES-2, 0, "Reading message: 0");
else {
PutLine0(LINES, 0, "\n");
PutLine0(LINES, 0, "Reading message: 0");
count_x = LINES;
}
}
if (mbox_specified == 0) {
lock(INCOMING); /* ensure no mail arrives while we do this! */
sprintf(temp_filename,"%s%s",temp_mbox, username);
if (! rereading) {
if ((temp = fopen(temp_filename,"w")) == NULL) {
err = errno;
unlock(); /* remove lock file! */
Raw(OFF);
Write_to_screen(
"\nCouldn't open file %s for use as temp mailbox;\n", 1,
temp_filename);
Write_to_screen("** %s - %s **\n", 2,
error_name(err), error_description(err));
dprint3(1,
"Error: Couldn't open file %s as temp mbox. errno %s (%s)\n",
temp_filename, error_name(err), "read_headers");
leave();
}
get_mailtime();
copyit++;
chown(temp_filename, userid, groupid);
}
else {
if ((temp = fopen(temp_filename,"a")) == NULL) {
err = errno;
unlock(); /* remove lock file! */
Raw(OFF);
Write_to_screen(
"\nCouldn't reopen file %s for use as temp mailbox;\n", 1,
temp_filename);
Write_to_screen("** %s - %s **\n", 2,
error_name(err), error_description(err));
dprint3(1,
"Error: Couldn't reopen file %s as temp mbox. errno %s (%s)\n",
temp_filename, error_name(err), "read_headers");
emergency_exit();
}
copyit++;
}
}
if (rereading) {
if (fseek(mailfile, mailfile_size, 0)) {
err = errno;
Write_to_screen(
"\nCouldn't seek to %ld (end of mailbox) in %s!\n", 2,
mailfile_size, infile);
Write_to_screen("** %s - %s **\n", 2,
error_name(err), error_description(err));
dprint4(1,
"Error: Couldn't seek to end of mailbox %s: (offset %ld) Errno %s (%s)\n",
infile, mailfile_size, error_name(err), "read_headers");
emergency_exit();
}
count = message_count; /* next available */
bytes = mailfile_size; /* start correctly */
if (message_count > 0)
line = header_table[message_count - 1].lines;
else
line = 0;
}
while (fgets(buffer, LONG_STRING, mailfile) != NULL) {
if (bytes == 0L) { /* first line of file... */
if (! mbox_specified) {
if (first_word(buffer, "Forward to "))
set_central_message("Mail being forwarded to %s",
(char *) (buffer + 11));
}
/* Are we reading in a notesfile file without the flag
turned on??? */
if (first_word(buffer, NOTES_HEADER)) { /* if so... */
rewind(mailfile);
notesfile++; /* set da flag, boss-man */
return(read_notesfile()); /* hop over to notes */
}
}
if (copyit) fputs(buffer, temp);
line_bytes = (long) strlen(buffer);
line++;
if (first_word(buffer,"From ")) {
if (real_from(buffer, &header_table[count])) {
header_table[count].offset = (long) bytes;
header_table[count].index_number = count+1;
if (! rereading || count > message_count)
header_table[count].status = 0; /* clear status! */
strcpy(header_table[count].subject, ""); /* clear subj */
header_table[count-1].lines = line;
if (new_msg(header_table[count])) {
header_table[count].status |= NEW; /* new message! */
if (! new_messages++ && point_to_new && ! rereading &&
sortby == RECEIVED_DATE) {
current = count+1;
get_page(current); /* make sure we're ON that page! */
}
/* Quick comment on that last conditional test...
We want to move the current pointer to the first new
message IF this is the first of the new messages, the
user requested this feature, we're not rereading the
mailbox (imagine how THAT could screw the user up!),
and we're not in some funky sorting mode (received-date is
the default). As always, I'm open to suggestions on
other ways to have this work intelligently.
*/
}
count++;
subj = 0;
line = 0;
in_header = 1;
PutLine1(count_x, count_y, "%d", count);
}
}
else if (in_header) {
if (first_word(buffer,">From"))
forwarded(buffer, &header_table[count-1]); /* return address */
else if (first_word(buffer,"Subject:") ||
first_word(buffer,"Subj:") ||
first_word(buffer,"Re:")) {
if (! subj++) {
remove_first_word(buffer);
strncpy(header_table[count-1].subject, buffer, STRING);
}
}
else if (first_word(buffer,"From:"))
parse_arpa_from(buffer, header_table[count-1].from);
/** when it was sent... **/
else if (first_word(buffer, "Date:"))
parse_arpa_date(buffer, &header_table[count-1]);
/** some status things about the message... **/
else if (first_word(buffer, "Priority:"))
header_table[count-1].status |= PRIORITY;
else if (first_word(buffer, "Action:"))
header_table[count-1].status |= ACTION;
/** next let's see if it's to us or not... **/
else if (first_word(buffer, "To:")) {
in_to_list = TRUE;
header_table[count-1].to[0] = '\0'; /* nothing yet */
figure_out_addressee((char *) buffer +3,
header_table[count-1].to);
}
else if (buffer[0] == LINE_FEED || buffer[0] == '\0') {
if (in_header) {
in_header = 0; /* in body of message! */
fix_date(&header_table[count-1]);
}
}
else if (in_to_list == TRUE) {
if (whitespace(buffer[0]))
figure_out_addressee(buffer, header_table[count-1].to);
else in_to_list = FALSE;
}
}
bytes += (long) line_bytes;
}
header_table[count > 0? count-1:count].lines = line;
if (mbox_specified == 0) {
unlock(); /* remove lock file! */
fclose(mailfile);
fclose(temp);
if ((mailfile = fopen(temp_filename,"r")) == NULL) {
err = errno;
MoveCursor(LINES,0);
Raw(OFF);
Write_to_screen("\nAugh! Couldn't reopen %s as temp mail file;\n",
1, temp_filename);
Write_to_screen("** %s - %s **\n", 2, error_name(err),
error_description(err));
dprint3(1,
"Error: Reopening %s as temp mail file failed! errno %s (%s)\n",
temp_filename, error_name(errno), "read_headers");
leave();
}
}
else
rewind(mailfile);
sort_mailbox(count); /* let's sort this baby now! */
return(count);
}
END-OF-FILE
if [ "$filename" != "/dev/null" ]
then
size=`wc -c < $filename`
if [ $size != 11389 ]
then
echo $filename changed - should be 11389 bytes, not $size bytes
fi
chmod 644 $filename
fi
# ---------- file src/notesfile.c ----------
filename="src/notesfile.c"
if [ -f $filename ]
then
echo File \"$filename\" already exists\! Skipping...
filename=/dev/null # throw it away
else
echo extracting file src/notesfile.c...
fi
cat << 'END-OF-FILE' > $filename
/** notesfile.c **/
/** Routine that reads in a file comprised of saved messages from
'notes'.
(C) Copyright 1986 Dave Taylor
**/
#include "headers.h"
#include <errno.h>
char *notes_machine();
extern int errno;
char *error_name(), *error_description();
int
read_notesfile()
{
/** read in the current mailfile, assuming it's actually a set
of stored notes from the notes program... **/
char buffer[LONG_STRING];
register int line = 0, count = 0;
long bytes = 0L, line_bytes = 0L;
static int first_read = 0;
int count_x , count_y = 17;
if (! first_read++) {
MoveCursor(LINES-2, 0);
CleartoEOS();
PutLine1(LINES-1, 0, "Reading in %s, message: 0", infile);
count_x = LINES-1;
count_y = 22 + strlen(infile);
}
else {
PutLine0(LINES-2, 0, "Reading message: 0");
count_x = LINES-2;
}
while (fgets(buffer, LONG_STRING, mailfile) != NULL) {
if (line == 0) {
/** Double check to make sure this is okay... if the first
word is "From " then we're actually reading a normal
file so cruise over to the read_headers() routine
instead! **/
if (first_word(buffer, "From ")) {
notesfile = 0; /* turn that bloody flag off! */
rewind(mailfile); /* back up in da file... */
return( read_headers(FALSE) );
}
}
line_bytes = (long) strlen(buffer);
line++;
if (first_word(buffer, "/***** ")) {
if (real_notes_header(buffer, &header_table[count])) {
header_table[count].offset = (long) bytes;
header_table[count].status = 0;
header_table[count++].lines = line;
PutLine1(count_x, count_y, "%d", count);
line = 0;
}
}
bytes += (long) line_bytes;
}
rewind(mailfile);
return(count);
}
int
real_notes_header(buffer, entry)
char *buffer;
struct header_rec *entry;
{
/** confirms that we're looking at a REAL notes header,
and if so, saves it in the appropriate data entry **/
char subjectbuffer[SLEN], timebuffer[NLEN], lastbuffer[NLEN],
am_pm[NLEN], the_day[NLEN], nullbuffer[NLEN];
strcpy(nullbuffer, "NULL");
strcpy(lastbuffer, "LAST");
sscanf(buffer, "%*s %s %*c %s %*c %s %s %s %s %s %s",
subjectbuffer, entry->from,
timebuffer, am_pm, entry->month, the_day,
lastbuffer, nullbuffer);
if (strcmp(lastbuffer, "LAST") == 0)
return(0);
if (strcmp(nullbuffer,"NULL") != 0)
return(0);
if (timebuffer[1] != ':' && timebuffer[2] != ':')
return(0);
/* now let's play format! */
clean_up(subjectbuffer);
sprintf(entry->subject, "Note from group %s", subjectbuffer);
sprintf(entry->day,"%d", atoi(the_day));
sprintf(entry->year,"%d", atoi(lastbuffer) % 100);
sprintf(entry->time,"%s %s", timebuffer, am_pm);
return(1);
}
char *notes_machine()
{
/** For those rare notes posted by someone on the machine that
the notesfiles are saved from, this routine will fix the
address to ensure it's valid. The return value will be
either 'machine!' or NULL if it's from the machine we're on
**/
static char machine_group[NLEN];
char buffer[SLEN];
register int i;
if (fseek(mailfile, header_table[current-1].offset, 0) != 0) {
dprint3(1,"Error: errno %s encountered on seek to %d in file! (%s)\n",
error_name(errno), header_table[current-1].offset,
"notes_machine");
error1("error %s trying to seek!",
error_name(errno));
return( NULL );
}
if (fgets(buffer, SLEN, mailfile) == NULL) {
dprint2(1,"Error: errno %s encountered on read (%s)",
error_name(errno), "notes_machine");
error1("error %s trying to read file!", error_name(errno));
return( NULL );
}
sscanf(buffer,"%*s %s", machine_group);
for (i=0; machine_group[i] != ':'; i++)
;
machine_group[i] = '\0';
return( (char *) machine_group);
}
END-OF-FILE
if [ "$filename" != "/dev/null" ]
then
size=`wc -c < $filename`
if [ $size != 3815 ]
then
echo $filename changed - should be 3815 bytes, not $size bytes
fi
chmod 644 $filename
fi
# ---------- file src/pattern.c ----------
filename="src/pattern.c"
if [ -f $filename ]
then
echo File \"$filename\" already exists\! Skipping...
filename=/dev/null # throw it away
else
echo extracting file src/pattern.c...
fi
cat << 'END-OF-FILE' > $filename
/** pattern.c **/
/** General pattern matching for the ELM mailer.
(C) Copyright 1986 Dave Taylor
**/
#include <errno.h>
#include "headers.h"
static char pattern[SLEN] = { "" };
static char alt_pattern[SLEN] = { "" };
extern int errno;
char *error_name();
meta_match(function)
int function;
{
/** Perform specific function based on whether an entered string
matches either the From or Subject lines..
**/
register int i, tagged=0, count=0;
static char meta_pattern[SLEN];
PutLine1(LINES-3, strlen("Command: "),
"%s messages that match pattern...",
function==TAGGED?"Tag":"Delete");
if (function == TAGGED) { /* are messages already tagged??? */
for (i=0; i < message_count; i++)
if (ison(header_table[i].status,TAGGED))
tagged++;
if (tagged) {
if (tagged > 2)
PutLine0(LINES-2,0, "Some messages are already tagged");
else
PutLine0(LINES-2,0, "A message is already tagged");
Write_to_screen("- Remove tag%s? y%c", 2, plural(tagged),BACKSPACE);
if (tolower(ReadCh()) != 'n') { /* remove tags... */
for (i=0; i < message_count; i++) {
clearit(header_table[i].status,TAGGED);
show_new_status(i);
}
}
}
}
PutLine0(LINES-2,0, "Enter pattern: "); CleartoEOLN();
optionally_enter(meta_pattern, LINES-2,strlen("Enter pattern: "),FALSE);
if (strlen(meta_pattern) == 0) {
ClearLine(LINES-2);
return(0);
}
strcpy(meta_pattern, shift_lower(meta_pattern)); /* lowercase it */
for (i = 0; i < message_count; i++) {
if (from_matches(i, meta_pattern)) {
setit(header_table[i].status, function);
show_new_status(i);
count++;
}
else if (subject_matches(i, meta_pattern)) {
setit(header_table[i].status, function);
show_new_status(i);
count++;
}
}
ClearLine(LINES-2); /* remove "pattern: " prompt */
if (count > 0)
error3("%s %d messsage%s",
function==TAGGED? "tagged" : "marked for deletion",
count, plural(count));
else
error1("no matches - no messages %s",
function==TAGGED? "tagged" : "marked for deletion");
return(0);
}
int
pattern_match()
{
/** Get a pattern from the user and try to match it with the
from/subject lines being displayed. If matched (ignoring
case), move current message pointer to that message, if
not, error and return ZERO **/
register int i;
PutLine0(LINES-3,40,"/ = match anywhere in messages");
PutLine0(LINES-1,0, "Match Pattern:");
if (pattern_enter(pattern, alt_pattern, LINES-1, 16,
"Match Pattern (in entire mailbox):"))
if (strlen(alt_pattern) > 0) {
strcpy(alt_pattern, shift_lower(alt_pattern));
return(match_in_message(alt_pattern));
}
else
return(1);
if (strlen(pattern) == 0)
return(0);
else
strcpy(pattern, shift_lower(pattern));
for (i = current; i < message_count; i++) {
if (from_matches(i, pattern)) {
current = ++i;
return(1);
}
else if (subject_matches(i, pattern)) {
current = ++i;
return(1);
}
}
return(0);
}
int
from_matches(message_number, pat)
int message_number;
char *pat;
{
/** Returns true iff the pattern occurs in it's entirety
in the from line of the indicated message **/
return( in_string(shift_lower(header_table[message_number].from),
pat) );
}
int
subject_matches(message_number, pat)
int message_number;
char *pat;
{
/** Returns true iff the pattern occurs in it's entirety
in the subject line of the indicated message **/
return( in_string(shift_lower(header_table[message_number].subject),
pat) );
}
match_in_message(pat)
char *pat;
{
/** Match a string INSIDE a message...starting at the current
message read each line and try to find the pattern. As
soon as we do, set current and leave!
Returns 1 if found, 0 if not
**/
char buffer[LONG_STRING];
int message_number;
long location;
location = header_table[current-1].offset;
message_number = current-1;
if (fseek(mailfile, location, 0) != 0) {
dprint3(1,"Error: seek %ld bytes into file failed. errno %d (%s)\n",
location, errno, "match_in_message");
error2("ELM [match] failed looking %ld bytes into file (%s)",
location, error_name(errno));
return(1); /* fake it out to avoid replacing error message */
}
error("searching for pattern...");
while (fgets(buffer, LONG_STRING, mailfile) != NULL) {
if (in_string(shift_lower(buffer), pat)) {
current = message_number;
clear_error();
return(1);
}
location += (long) strlen(buffer);
if (location > header_table[message_number].offset)
message_number++;
}
return(0);
}
END-OF-FILE
if [ "$filename" != "/dev/null" ]
then
size=`wc -c < $filename`
if [ $size != 4687 ]
then
echo $filename changed - should be 4687 bytes, not $size bytes
fi
chmod 644 $filename
fi
# ---------- file src/quit.c ----------
filename="src/quit.c"
if [ -f $filename ]
then
echo File \"$filename\" already exists\! Skipping...
filename=/dev/null # throw it away
else
echo extracting file src/quit.c...
fi
cat << 'END-OF-FILE' > $filename
/** quit.c **/
/** quit: leave the current mailbox and quit the program.
(C) Copyright 1985, Dave Taylor
**/
#include "headers.h"
#ifndef TRUE
#define TRUE 1
#endif
quit()
{
/* a wonderfully short routine!! */
if (leave_mbox() == -1)
return; /* new mail! (damn it) resync */
leave();
}
resync()
{
/* Resync on the current mailbox... **/
error("reading mailfile in again...");
sleep(1);
newmbox(1, TRUE, FALSE); /* pretend we've never seen it! */
showscreen();
mailfile_size = bytes(infile); /* complete resync */
}
END-OF-FILE
if [ "$filename" != "/dev/null" ]
then
size=`wc -c < $filename`
if [ $size != 550 ]
then
echo $filename changed - should be 550 bytes, not $size bytes
fi
chmod 644 $filename
fi
# ---------- file src/file_utils.c ----------
filename="src/file_utils.c"
if [ -f $filename ]
then
echo File \"$filename\" already exists\! Skipping...
filename=/dev/null # throw it away
else
echo extracting file src/file_utils.c...
fi
cat << 'END-OF-FILE' > $filename
/** file_utils.c **/
/** File oriented utility routines for ELM
(C) Copyright 1986 Dave Taylor
**/
#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>
#include <errno.h>
extern int errno; /* system error number */
char *error_name(), *error_description();
long
bytes(name)
char *name;
{
/** return the number of bytes in the specified file. This
is to check to see if new mail has arrived.... **/
int ok = 1;
extern int errno; /* system error number! */
struct stat buffer;
if (stat(name, &buffer) != 0)
if (errno != 2) {
dprint2(1,"Error: errno %s on fstat of file %s (bytes)\n",
error_name(errno), name);
Write_to_screen("\n\rError attempting fstat on file %s!\n\r",
1, name);
Write_to_screen("** %s - %s **\n\r", 2, error_name(errno),
error_description(errno));
emergency_exit();
}
else
ok = 0;
return(ok ? (long) buffer.st_size : 0L);
}
int
can_access(file, mode)
char *file;
int mode;
{
/** returns TRUE iff user can access file **/
int status, pid, w;
register int (*istat)(), (*qstat)();
#ifdef NO_VM /* machine without virtual memory!! */
if ((pid = fork()) == 0) {
#else
if ((pid = vfork()) == 0) {
#endif
setuid(userid); /** back to normal userid **/
setgid(groupid);
errno = 0;
(void) access(file, mode);
_exit(errno);
_exit(127);
}
istat = signal(SIGINT, SIG_IGN);
qstat = signal(SIGQUIT, SIG_IGN);
while ((w = wait(&status)) != pid && w != -1)
;
if (w == -1) status = FALSE;
signal(SIGINT, istat);
signal(SIGQUIT, qstat);
return(status);
}
int
can_open(file, mode)
char *file;
char *mode;
{
/** returns TRUE iff user can open the file. This is not
the same as can_access - it's used for when the file might
not exist... **/
int status, pid, w;
register int (*istat)(), (*qstat)();
#ifdef NO_VM /* machine without virtual memory!! */
if ((pid = fork()) == 0) {
#else
if ((pid = vfork()) == 0) {
#endif
setuid(userid); /** back to normal userid **/
setgid(groupid);
errno = 0;
(void) fopen(file, mode);
_exit(errno);
_exit(127);
}
istat = signal(SIGINT, SIG_IGN);
qstat = signal(SIGQUIT, SIG_IGN);
while ((w = wait(&status)) != pid && w != -1)
;
if (w == -1) status = FALSE;
signal(SIGINT, istat);
signal(SIGQUIT, qstat);
return(status);
}
int
copy(from, to)
char *from, *to;
{
/** this routine copies a specified file to the destination
specified. Non-zero return code indicates that something
dreadful happened! **/
FILE *from_file, *to_file;
char buffer[VERY_LONG_STRING];
if ((from_file = fopen(from, "r")) == NULL) {
dprint1(1,"Error: could not open %s for reading (copy)\n", from);
error1("could not open file %s", from);
return(1);
}
if ((to_file = fopen(to, "w")) == NULL) {
dprint1(1,"Error: could not open %s for writing (copy)\n", to);
error1("could not open file %s", to);
return(1);
}
while (fgets(buffer, VERY_LONG_STRING, from_file) != NULL)
fputs(buffer, to_file);
fclose(from_file);
fclose(to_file);
return(0);
}
int
append(fd, filename)
FILE *fd;
char *filename;
{
/** This routine appends the specified file to the already
open file descriptor.. Returns non-zero if fails. **/
FILE *my_fd;
char buffer[VERY_LONG_STRING];
if ((my_fd = fopen(filename, "r")) == NULL) {
dprint1(1,"Error: could not open %s for reading (append)\n", filename);
return(1);
}
while (fgets(buffer, VERY_LONG_STRING, my_fd) != NULL)
fputs(buffer, fd);
fclose(my_fd);
return(0);
}
check_mailfile_size()
{
/** Check to ensure we have mail. Only used with the '-z'
starting option. **/
char filename[SLEN];
struct stat buffer;
strcpy(username,getlogin());
if (strlen(username) == 0)
cuserid(username);
sprintf(filename,"%s/%s", mailhome, username);
if (stat(filename, &buffer) == -1) {
printf(" You have no mail.\n");
exit(0);
}
else if (buffer.st_size < 2) { /* maybe one byte??? */
printf("You have no mail to read.\n");
exit(0);
}
}
create_readmsg_file()
{
/** Creates the file ".current" in the users home directory
for use with the "readmsg" program.
**/
FILE *fd;
char buffer[SLEN];
sprintf(buffer,"%s/%s", home, readmsg_file);
if ((fd = fopen (buffer, "w")) == NULL) {
dprint3(1,"Error: couldn't create file %s - error %s (%s)\n",
buffer, error_name(errno), "create_readmsg_file");
return; /* no error to user */
}
fprintf(fd, "%d\n", header_table[current-1].index_number);
fclose(fd);
}
END-OF-FILE
if [ "$filename" != "/dev/null" ]
then
size=`wc -c < $filename`
if [ $size != 4640 ]
then
echo $filename changed - should be 4640 bytes, not $size bytes
fi
chmod 644 $filename
fi
# ---------- file src/reply.c ----------
filename="src/reply.c"
if [ -f $filename ]
then
echo File \"$filename\" already exists\! Skipping...
filename=/dev/null # throw it away
else
echo extracting file src/reply.c...
fi
cat << 'END-OF-FILE' > $filename
/** reply.c **/
/*** routine allows replying to the sender of the current message
(C) Copyright 1985, Dave Taylor
***/
#include "headers.h"
#include <errno.h>
#ifndef BSD
# include <sys/utsname.h>
#endif
/** Note that this routine generates automatic header information
for the subject and (obviously) to lines, but that these can
be altered while in the editor composing the reply message!
**/
char *strip_parens(), *get_token(), *notes_machine();
extern int errno;
char *error_name();
int
reply()
{
/** Reply to the current message. Returns non-zero iff
the screen has to be rewritten. **/
char return_address[LONG_SLEN], subject[SLEN];
int return_value;
get_return(return_address);
if (first_word(header_table[current-1].from, "To:")) {
strcpy(subject, header_table[current-1].subject);
return_value = send(return_address, subject, TRUE);
}
else if (header_table[current-1].subject[0] != '\0') {
if ((strncmp("Re:", header_table[current-1].subject, 3) == 0) ||
(strncmp("RE:", header_table[current-1].subject, 3) == 0) ||
(strncmp("re:", header_table[current-1].subject, 3) == 0))
strcpy(subject, header_table[current-1].subject);
else {
strcpy(subject,"Re: ");
strcat(subject,header_table[current-1].subject);
}
return_value = send(return_address, subject, TRUE);
}
else
return_value = send(return_address, "Re: your mail", TRUE);
return(return_value);
}
int
reply_to_everyone()
{
/** Reply to everyone who received the current message.
This includes other people in the 'To:' line and people
in the 'Cc:' line too. Returns non-zero iff the screen
has to be rewritten. **/
char return_address[LONG_SLEN], subject[SLEN];
char full_address[VERY_LONG_STRING];
int return_value;
get_return(return_address);
strcpy(full_address, return_address); /* sender gets copy */
get_and_expand_everyone(return_address, full_address);
if (header_table[current-1].subject[0] != '\0') {
if ((strncmp("Re:", header_table[current-1].subject, 3) == 0) ||
(strncmp("RE:", header_table[current-1].subject, 3) == 0) ||
(strncmp("re:", header_table[current-1].subject, 3) == 0))
strcpy(subject, header_table[current-1].subject);
else {
strcpy(subject,"Re: ");
strcat(subject,header_table[current-1].subject);
}
return_value = send(full_address, subject, TRUE);
}
else
return_value = send(full_address, "Re: your mail", TRUE);
return(return_value);
}
int
forward()
{
/** Forward the current message. What this actually does is
to set auto_copy to true, then call 'send' to get the
address and route the mail.
**/
char subject[SLEN], address[VERY_LONG_STRING];
int original_cc, results, edit_msg;
original_cc = auto_copy;
address[0] = '\0';
edit_msg = (want_to("Edit outgoing message (y/n) ? ",'y',FALSE) != 'n');
Write_to_screen("%s", 1, edit_msg? "Yes" : "No");
auto_cc = TRUE; /* we want a copy */
if (strlen(header_table[current-1].subject) > 0) {
strcpy(subject,header_table[current-1].subject);
results = send(address, subject, edit_msg);
}
else
results = send(address, "Forwarded Mail...", edit_msg);
auto_copy = original_cc;
return(results);
}
get_and_expand_everyone(return_address, full_address)
char *return_address, *full_address;
{
/** Read the current message, extracting addresses from the 'To:'
and 'Cc:' lines. As each address is taken, ensure that it
isn't to the author of the message NOR to us. If neither,
prepend with current return address and append to the
'full_address' string.
**/
char ret_address[LONG_SLEN], buf[LONG_SLEN], new_address[LONG_SLEN];
char *bufptr, *address;
int in_message = 1, first_pass = 0;
/** First off, get to the first line of the message desired **/
if (fseek(mailfile, header_table[current-1].offset, 0) == -1) {
dprint3(1,"Error: seek %ld resulted in errno %s (%s)\n",
header_table[current-1].offset, error_name(errno),
"get_and_expand_everyone");
error2("ELM [seek] couldn't read %d bytes into file (%s)",
header_table[current-1].offset, error_name(errno));
return;
}
/** okay! Now we're there! **/
/** let's fix the ret_address to reflect the return address of this
message with '%s' instead of the persons login name... **/
translate_return(return_address, ret_address);
/** now let's parse the actual message! **/
while (in_message) {
in_message = (int) (fgets(buf, LONG_SLEN, mailfile) != NULL);
if (first_word(buf, "From ") && first_pass++ != 0)
in_message = FALSE;
else if (first_word(buf, "To:") || first_word(buf, "Cc:") ||
first_word(buf, "CC:") || first_word(buf, "cc:")) {
do {
no_ret(buf);
bufptr = (char *) (strip_parens(buf) + 3); /* 3 = strlen of prompt */
while ((address = get_token(bufptr, "\t, ", 0)) != NULL) {
if (okay_address(address, return_address)) {
sprintf(new_address, ret_address, address);
optimize_and_add(new_address, full_address);
}
bufptr = NULL;
}
in_message = (int) (fgets(buf, LONG_SLEN, mailfile) != NULL);
} while (in_message && whitespace(buf[0]));
}
else if (strlen(buf) < 2) /* done with header */
in_message = FALSE;
}
}
int
okay_address(address, return_address)
char *address, *return_address;
{
/** This routine checks to ensure that the address we just got
from the "To:" or "Cc:" line isn't us AND isn't the person
who sent the message. Returns true iff neither is the case **/
char our_address[SLEN];
struct addr_rec *alternatives;
if (in_string(address, return_address))
return(FALSE);
sprintf(our_address, "%s!%s", hostname, username);
if (in_string(address, our_address))
return(FALSE);
sprintf(our_address, "%s@%s", username, hostname);
if (in_string(address, our_address))
return(FALSE);
alternatives = alternative_addresses;
while (alternatives != NULL) {
if (in_string(address, alternatives->address))
return(FALSE);
alternatives = alternatives->next;
}
return(TRUE);
}
optimize_and_add(new_address, full_address)
char *new_address, *full_address;
{
/** This routine will add the new address to the list of addresses
in the full address buffer IFF it doesn't already occur. It
will also try to fix dumb hops if possible, specifically hops
of the form ...a!b...!a... and hops of the form a@b@b etc
**/
register int len, host_count = 0, i;
char hosts[MAX_HOPS][SLEN]; /* array of machine names */
char *host, *addrptr;
if (in_string(full_address, new_address))
return(1); /* duplicate address */
/** optimize **/
/* break down into a list of machine names, checking as we go along */
addrptr = (char *) new_address;
while ((host = get_token(addrptr, "!", 1)) != NULL) {
for (i = 0; i < host_count && ! equal(hosts[i], host); i++)
;
if (i == host_count) {
strcpy(hosts[host_count++], host);
if (host_count == MAX_HOPS) {
dprint1(2,
"Error: hit max_hops limit trying to build return address (%s)\n",
"optimize_and_add");
error("Can't build return address - hit MAX_HOPS limit!");
return(1);
}
}
else
host_count = i + 1;
addrptr = NULL;
}
/** fix the ARPA addresses, if needed **/
if (chloc(hosts[host_count-1], '@') > -1)
fix_arpa_address(hosts[host_count-1]);
/** rebuild the address.. **/
new_address[0] = '\0';
for (i = 0; i < host_count; i++)
sprintf(new_address, "%s%s%s", new_address,
new_address[0] == '\0'? "" : "!",
hosts[i]);
if (full_address[0] == '\0')
strcpy(full_address, new_address);
else {
len = strlen(full_address);
full_address[len ] = ',';
full_address[len+1] = ' ';
full_address[len+2] = '\0';
strcat(full_address, new_address);
}
return(0);
}
get_return_name(address, name, shift_lower)
char *address, *name;
int shift_lower;
{
/** Given the address (either a single address or a combined list
of addresses) extract the login name of the first person on
the list and return it as 'name'. Modified to stop at
any non-alphanumeric character. **/
/** An important note to remember is that it isn't vital that this
always returns just the login name, but rather that it always
returns the SAME name. If the persons' login happens to be,
for example, joe.richards, then it's arguable if the name
should be joe, or the full login. It's really immaterial, as
indicated before, so long as we ALWAYS return the same name! **/
/** Another note: modified to return the argument as all lowercase
always, unless shift_lower is FALSE... **/
char single_address[LONG_SLEN];
register int i, loc, index = 0;
dprint2(6,"get_return_name called with (%s, <>, shift=%s)\n",
address, onoff(shift_lower));
/* First step - copy address up to a comma, space, or EOLN */
for (i=0; address[i] != ',' && ! whitespace(address[i]) &&
address[i] != '\0'; i++)
single_address[i] = address[i];
single_address[i] = '\0';
/* Now is it an ARPA address?? */
if ((loc = chloc(single_address, '@')) != -1) { /* Yes */
/* At this point the algorithm is to keep shifting our copy
window left until we hit a '!'. The login name is then
located between the '!' and the first metacharacter to
it's right (ie '%', ':' or '@'). */
for (i=loc; single_address[i] != '!' && i > -1; i--)
if (single_address[i] == '%' ||
single_address[i] == ':' ||
single_address[i] == '.' || /* no domains */
single_address[i] == '@') loc = i-1;
if (i < 0 || single_address[i] == '!') i++;
for (index = 0; index < loc - i + 1; index++)
if (shift_lower)
name[index] = tolower(single_address[index+i]);
else
name[index] = single_address[index+i];
name[index] = '\0';
}
else { /* easier - standard USENET address */
/* This really is easier - we just cruise left from the end of
the string until we hit either a '!' or the beginning of the
line. No sweat. */
loc = strlen(single_address)-1; /* last char */
for (i = loc; single_address[i] != '!' && single_address[i] != '.'
&& i > -1; i--)
if (shift_lower)
name[index++] = tolower(single_address[i]);
else
name[index++] = single_address[i];
name[index] = '\0';
reverse(name);
}
}
END-OF-FILE
if [ "$filename" != "/dev/null" ]
then
size=`wc -c < $filename`
if [ $size != 10560 ]
then
echo $filename changed - should be 10560 bytes, not $size bytes
fi
chmod 644 $filename
fi
# ---------- file src/screen.c ----------
filename="src/screen.c"
if [ -f $filename ]
then
echo File \"$filename\" already exists\! Skipping...
filename=/dev/null # throw it away
else
echo extracting file src/screen.c...
fi
cat << 'END-OF-FILE' > $filename
/** screen.c **/
/** screen display routines for ELM program
(C) Copyright 1985, Dave Taylor
**/
#include "headers.h"
static int last_current = -1;
showscreen()
{
char buffer[SLEN];
ClearScreen();
if (notesfile)
sprintf(buffer, "Notes from '%s' (%d note%s) [Version %s]",
infile, message_count,
plural(message_count), VERSION);
else
sprintf(buffer, "Mailbox is '%s' with %d message%s [Version %s]",
infile, message_count,
plural(message_count), VERSION);
Centerline(1, buffer);
last_header_page = -1; /* force a redraw regardless */
show_headers();
if (mini_menu)
show_menu();
show_last_error();
if (hp_terminal)
define_softkeys(MAIN);
}
update_title()
{
/** display a new title line, probably due to new mail arriving **/
char buffer[SLEN];
if (notesfile)
sprintf(buffer, "Notes from '%s' (%d note%s) [Version %s]",
infile, message_count,
plural(message_count), VERSION);
else
sprintf(buffer, "Mailbox is '%s' with %d message%s [Version %s]",
infile, message_count,
plural(message_count), VERSION);
ClearLine(1);
Centerline(1, buffer);
}
show_menu()
{
/** write main system menu... **/
Centerline(LINES-7,
"|=pipe, !=shell, ?=help, <n>=set current to n, /=search pattern");
Centerline(LINES-6,
"A)lias, C)hange mailbox, D)elete, E)dit, F)orward, G)roup reply, M)ail,");
Centerline(LINES-5,
"N)ext, O)ptions, P)rint, R)eply, S)ave, T)ag, Q)uit, U)ndelete, or eX)it");
show_last_error();
}
int
show_headers()
{
/** display page of headers (10) if present. First check to
ensure that header_page is in bounds, fixing silently if not.
If out of bounds, return zero, else return non-zero **/
register int this_msg = 0, line = 4, last = 0, last_line;
char newfrom[SLEN], buffer[SLEN];
if (fix_header_page())
return(FALSE);
if (header_page == last_header_page) /* nothing to do! */
return(FALSE);
/** compute last header to display **/
this_msg = header_page * headers_per_page;
last = this_msg + (headers_per_page - 1);
if (last >= message_count) last = message_count-1;
/** okay, now let's show the header page! **/
ClearLine(line); /* Clear the top line... */
MoveCursor(line, 0); /* and move back to the top of the page... */
for (; this_msg <= last; this_msg++) {
tail_of(header_table[this_msg].from, newfrom, TRUE);
if (this_msg == current-1)
build_header_line(buffer, &header_table[this_msg], this_msg+1, TRUE,
newfrom);
else
build_header_line(buffer, &header_table[this_msg],
this_msg+1, FALSE, newfrom);
Write_to_screen("%s\r\n", 1, buffer); /* avoid '%' probs */
CleartoEOLN();
line++; /* for clearing up in a sec... */
}
if (mini_menu)
last_line = LINES-8;
else
last_line = LINES-3;
while (line < last_line) {
CleartoEOLN();
Writechar('\r');
Writechar('\n');
line++;
}
display_central_message();
last_current = current;
last_header_page = header_page;
return(TRUE);
}
show_current()
{
/** Display page of headers (10) if present. First check to
ensure that header_page is in bounds, fixing silently if not.
Note that this will ensure that 'current' is always set to
the top message on the screen if we go to a new screen! **/
register int first = 0, last = 0, last_line, new_line;
char newfrom[SLEN], old_buffer[SLEN], new_buffer[SLEN];
(void) fix_header_page(); /* Who cares what it does? ;-) */
/** compute last header to display **/
first = header_page * headers_per_page;
last = first + (headers_per_page - 1);
if (last > message_count)
last = message_count;
/** okay, now let's show the pointers... **/
/** have we changed??? **/
if (current == last_current)
return;
last_line = ((last_current-1) % headers_per_page)+4;
new_line = ((current-1) % headers_per_page)+4;
if (has_highlighting && ! arrow_cursor) {
/** build the old and new header lines... **/
tail_of(header_table[current-1].from, newfrom, TRUE);
build_header_line(new_buffer, &header_table[current-1], current,
TRUE, newfrom);
if (last_current > 0) { /* say we went from no mail to new... */
tail_of(header_table[last_current-1].from, newfrom, TRUE);
build_header_line(old_buffer, &header_table[last_current-1],
last_current, FALSE, newfrom);
ClearLine(last_line);
PutLine0(last_line, 0, old_buffer);
}
PutLine0(new_line, 0, new_buffer);
}
else {
if (on_page(last_current))
PutLine0(last_line,0," "); /* remove old pointer... */
if (on_page(current))
PutLine0(new_line, 0,"->");
}
last_current = current;
}
build_header_line(buffer, entry, message_number, highlight, from)
char *buffer;
struct header_rec *entry;
int message_number, highlight;
char *from;
{
/** Build in buffer the message header ... entry is the current
message entry, 'from' is a modified (displayable) from line,
'highlight' is either TRUE or FALSE, and 'message_number'
is the number of the message.
**/
/** Note: using 'strncpy' allows us to output as much of the
subject line as possible given the dimensions of the screen.
The key is that 'strncpy' returns a 'char *' to the string
that it is handing to the dummy variable! Neat, eh? **/
char subj[LONG_SLEN], /* to output subject */
buff[NLEN]; /* keep start_highlight value */
if (strcmp(start_highlight,"->") != 0 && arrow_cursor) {
strcpy(buff, start_highlight);
strcpy(start_highlight, "->");
}
strncpy(subj, entry->subject, COLUMNS-45);
subj[COLUMNS-45] = '\0'; /* insurance, eh? */
/* now THIS is a frightening format statement!!! */
sprintf(buffer, "%s%s%c%c%c%-3d %3.3s %-2d %-18.18s (%d) %s%s%s",
highlight? start_highlight : "",
strcmp(start_highlight,"->") == 0 && highlight? "" : " ",
show_status(entry->status),
(entry->status & DELETED? 'D' : ' '),
(entry->status & TAGGED? '+' : ' '),
message_number,
entry->month,
atoi(entry->day),
from,
entry->lines,
(entry->lines / 1000 > 0? "" : /* spacing the */
entry->lines / 100 > 0? " " : /* same for the */
entry->lines / 10 > 0? " " : /* lines in () */
" "), /* [wierd] */
subj,
highlight? end_highlight : " ");
/** Actually, it's rather an impressive feat that we can
do so much in essentially one statement! (Of course,
I'll bet the test suite for the printf routine isn't
THIS rigorous either!!!) (to be honest, though, just
looking at this statement makes me chuckle...)
**/
if (arrow_cursor) /* restore! */
strcpy(start_highlight, buff);
}
int
fix_header_page()
{
/** this routine will check and ensure that the current header
page being displayed contains messages! It will silently
fix 'header-page' if wrong. Returns TRUE if changed. **/
int last_page, old_header;
old_header = header_page;
last_page = (int) ((message_count-1) / headers_per_page);
if (header_page > last_page)
header_page = last_page;
else if (header_page < 0)
header_page = 0;
return(old_header != header_page);
}
int
on_page(message)
int message;
{
/** Returns true iff the specified message is on the displayed page. **/
if (message >= header_page * headers_per_page)
if (message <= ((header_page+1) * headers_per_page))
return(TRUE);
return(FALSE);
}
show_status(status)
int status;
{
/** This routine returns a single character indicative of
the status of this message. The precedence is;
E = Expired message
P = Priority message
A = Action associated with message
N = New message
_ = (space) default
**/
if (status & EXPIRED) return( 'E' );
else if (status & PRIORITY) return( 'P' );
else if (status & ACTION) return( 'A' );
else if (status & NEW) return( 'N' );
else return( ' ' );
}
END-OF-FILE
if [ "$filename" != "/dev/null" ]
then
size=`wc -c < $filename`
if [ $size != 7956 ]
then
echo $filename changed - should be 7956 bytes, not $size bytes
fi
chmod 644 $filename
fi
# ---------- file src/strings.c ----------
filename="src/strings.c"
if [ -f $filename ]
then
echo File \"$filename\" already exists\! Skipping...
filename=/dev/null # throw it away
else
echo extracting file src/strings.c...
fi
cat << 'END-OF-FILE' > $filename
/** strings.c **/
/** This file contains all the string oriented functions for the
ELM Mailer, and lots of other generally useful string functions!
For BSD systems, this file also includes the function "tolower"
to translate the given character from upper case to lower case.
(C) Copyright 1985, Dave Taylor
**/
#include <stdio.h>
#include "headers.h"
#include <ctype.h>
#ifdef BSD
#undef tolower
#undef toupper
#endif
/** forward declarations **/
char *format_long(), *strip_commas(), *tail_of_string(), *shift_lower(),
*get_token(), *strip_parens(), *argv_zero(), *change_ats();
#ifdef BSD
int
tolower(ch)
char ch;
{
/** This should be a macro call, but if you use this as a macro
calls to 'tolower' where the argument is a function call will
cause the function to be called TWICE which is obviously the
wrong behaviour. On the other hand, to just blindly translate
assuming the character is always uppercase can cause BIG
problems, so...
**/
return ( isupper(ch) ? ch - 'A' + 'a' : ch );
}
int
toupper(ch)
char ch;
{
/** see comment for above routine - tolower() **/
return ( islower(ch) ? ch - 'a' + 'A' : ch );
}
#endif
int
printable_chars(string)
char *string;
{
/** Returns the number of "printable" (ie non-control) characters
in the given string... Modified 4/86 to know about TAB
characters being every eight characters... **/
register int count = 0, index;
for (index = 0; index < strlen(string); index++)
if (string[index] >= ' ')
if (string[index] == '\t')
count += (7-(count % 8));
else
count++;
return(count);
}
tail_of(from, buffer, header_line)
char *from, *buffer;
int header_line;
{
/** Return last two words of 'from'. This is to allow
painless display of long return addresses as simply the
machine!username. Alternatively, if the first three
characters of the 'from' address are 'To:' and 'header_line'
is TRUE, then return the buffer value prepended with 'To '.
Mangled to know about the PREFER_UUCP hack. 6/86
**/
/** Note: '!' delimits Usenet nodes, '@' delimits ARPA nodes,
':' delimits CSNet & Bitnet nodes, and '%' delimits
multiple stage ARPA hops... **/
register int loc, i = 0, cnt = 0;
char tempbuffer[SLEN];
#ifdef PREFER_UUCP
/** let's see if we have an address appropriate for hacking **/
if (chloc(from,'!') != -1 && in_string(from, BOGUS_INTERNET))
from[strlen(from)-strlen(BOGUS_INTERNET)] = '\0';
#endif
for (loc = strlen(from)-1; loc >= 0 && cnt < 2; loc--) {
if (from[loc] == BANG || from[loc] == AT_SIGN ||
from[loc] == COLON) cnt++;
if (cnt < 2) buffer[i++] = from[loc];
}
buffer[i] = '\0';
reverse(buffer);
if ((strncmp(buffer,"To:", 3) == 0) && header_line)
buffer[2] = ' ';
else if ((strncmp(from, "To:", 3) == 0) && header_line) {
sprintf(tempbuffer,"To %s", buffer);
strcpy(buffer, tempbuffer);
}
else if (strncmp(buffer, "To:", 3) == 0) {
for (i=3; i < strlen(buffer); i++)
tempbuffer[i-3] = buffer[i];
tempbuffer[i-3] = '\0';
strcpy(buffer, tempbuffer);
}
}
char *format_long(inbuff, init_len)
char *inbuff;
int init_len;
{
/** Return buffer with \n\t sequences added at each point
where it would be more than 80 chars long. It only
allows the breaks at legal points (ie white spaces).
init-len is the characters already on the first line...
Changed so that if this is called while mailing without
the overhead of "elm", it'll include "\r\n\t" instead.
**/
static char ret_buffer[VERY_LONG_STRING];
register int index = 0, current_length = 0, depth=15, i;
char buffer[VERY_LONG_STRING];
char *word, *bufptr;
strcpy(buffer, inbuff);
bufptr = (char *) buffer;
current_length = init_len + 2; /* for luck */
while ((word = get_token(bufptr," ", depth)) != NULL) {
if (strlen(word) + current_length > 80) {
if (index > 0) {
if (mail_only)
ret_buffer[index++] = '\r';
ret_buffer[index++] = '\n';
ret_buffer[index++] = '\t';
}
for (i=0; i<strlen(word); i++)
ret_buffer[index++] = word[i];
current_length = strlen(word) + 8; /* 8 = TAB */
}
else {
if (index > 0)
ret_buffer[index++] = ' ';
for (i=0; i<strlen(word); i++)
ret_buffer[index++] = word[i];
current_length += strlen(word) + 1;
}
bufptr = NULL;
}
ret_buffer[index] = '\0';
return( (char *) ret_buffer);
}
char *strip_commas(string)
char *string;
{
/** return string with all commas changed to spaces. This IS
destructive and will permanently change the input string.. **/
register int i;
for (i=0; i < strlen(string); i++)
if (string[i] == COMMA)
string[i] = SPACE;
return( (char *) string);
}
char *strip_parens(string)
char *string;
{
/** Return string with all parenthesized information removed.
This is a non-destructive algorithm... **/
static char buffer[VERY_LONG_STRING];
register int i, depth = 0, buffer_index = 0;
for (i=0; i < strlen(string); i++) {
if (string[i] == '(')
depth++;
else if (string[i] == ')')
depth--;
else if (depth == 0)
buffer[buffer_index++] = string[i];
}
buffer[buffer_index] = '\0';
return( (char *) buffer);
}
move_left(string, chars)
char string[];
int chars;
{
/** moves string chars characters to the left DESTRUCTIVELY **/
register int i;
chars--; /* index starting at zero! */
for (i=chars; string[i] != '\0' && string[i] != '\n'; i++)
string[i-chars] = string[i];
string[i-chars] = '\0';
}
remove_first_word(string)
char *string;
{ /** removes first word of string, ie up to first non-white space
following a white space! **/
register int loc;
for (loc = 0; string[loc] != ' ' && string[loc] != '\0'; loc++)
;
while (string[loc] == ' ' || string[loc] == '\t')
loc++;
move_left(string, ++loc);
}
char *tail_of_string(string, maxchars)
char *string;
int maxchars;
{
/** Return a string that is the last 'maxchars' characters of the
given string. This is only used if the first word of the string
is longer than maxchars, else it will return what is given to
it...
**/
static char buffer[SLEN];
register int index, i;
for (index=0;! whitespace(string[index]) && index < strlen(string);
index++)
;
if (index < maxchars) {
strncpy(buffer, string, maxchars-2); /* word too short */
buffer[maxchars-2] = '.';
buffer[maxchars-1] = '.';
buffer[maxchars] = '.';
buffer[maxchars+1] = '\0';
}
else {
i = maxchars;
buffer[i--] = '\0';
while (i > 1)
buffer[i--] = string[index--];
buffer[2] = '.';
buffer[1] = '.';
buffer[0] = '.';
}
return( (char *) buffer);
}
reverse(string)
char *string;
{
/** reverse string... pretty trivial routine, actually! **/
char buffer[SLEN];
register int i, j = 0;
for (i = strlen(string)-1; i >= 0; i--)
buffer[j++] = string[i];
buffer[j] = '\0';
strcpy(string, buffer);
}
int
get_word(buffer, start, word)
char *buffer, *word;
int start;
{
/** return next word in buffer, starting at 'start'.
delimiter is space or end-of-line. Returns the
location of the next word, or -1 if returning
the last word in the buffer. -2 indicates empty
buffer! **/
register int loc = 0;
while (buffer[start] == ' ' && buffer[start] != '\0')
start++;
if (buffer[start] == '\0') return(-2); /* nothing IN buffer! */
while (buffer[start] != ' ' && buffer[start] != '\0')
word[loc++] = buffer[start++];
word[loc] = '\0';
return(start);
}
char *shift_lower(string)
char *string;
{
/** return 'string' shifted to lower case. Do NOT touch the
actual string handed to us! **/
static char buffer[LONG_SLEN];
register int i;
for (i=0; i < strlen(string); i++)
if (isupper(string[i]))
buffer[i] = tolower(string[i]);
else
buffer[i] = string[i];
buffer[strlen(string)] = 0;
return( (char *) buffer);
}
int
words_in_string(buffer)
char *buffer;
{
/** This routine returns the number of words in the given line.
A word is defined as a series of characters surrounded by
either the beginning of the string, the end of the string,
or white space.
For example, the following line has 8 words:
"This is a test of the program, okay?"
**/
register int count = 0, i = 0;
while (buffer[i] != '\0') {
while (whitespace(buffer[i])) i++;
if (buffer[i] != '\0')
count++;
while (! whitespace(buffer[i]) && buffer[i] != '\0') i++;
}
return(count);
}
clean_up(buffer)
char *buffer;
{
/** This routine takes a string of the form "a:b" and returns it
as just "b"... **/
char mybuffer[SLEN];
register int loc, myloc = 0;
for (loc=0; buffer[loc] != ':'; loc++)
;
while (buffer[++loc] != '\0')
mybuffer[myloc++] = buffer[loc];
mybuffer[myloc] = '\0';
strcpy(buffer, mybuffer);
}
Centerline(line, string)
int line;
char *string;
{
/** Output 'string' on the given line, centered. **/
register int length, col;
length = strlen(string);
if (length > COLUMNS)
col = 0;
else
col = (COLUMNS - length) / 2;
PutLine0(line, col, string);
}
char *argv_zero(string)
char *string;
{
/** given a string of the form "/something/name" return a
string of the form "name"... **/
static char buffer[NLEN];
register int i, j=0;
for (i=strlen(string)-1; string[i] != '/'; i--)
buffer[j++] = string[i];
buffer[j] = '\0';
reverse(buffer);
return( (char *) buffer);
}
#define MAX_RECURSION 20 /* up to 20 deep recursion */
char *get_token(source, keys, depth)
char *source, *keys;
int depth;
{
/** This function is similar to strtok() (see "opt_utils")
but allows nesting of calls via pointers...
**/
register int last_ch;
static char *buffers[MAX_RECURSION];
char *return_value, *sourceptr;
if (depth > MAX_RECURSION) {
error1("get_token calls nested greater than %d deep!",
MAX_RECURSION);
emergency_exit();
}
if (source != NULL)
buffers[depth] = source;
sourceptr = buffers[depth];
if (*sourceptr == '\0')
return(NULL); /* we hit end-of-string last time!? */
sourceptr += strspn(sourceptr, keys); /* skip the bad.. */
if (*sourceptr == '\0') {
buffers[depth] = sourceptr;
return(NULL); /* we've hit end-of-string */
}
last_ch = strcspn(sourceptr, keys); /* end of good stuff */
return_value = sourceptr; /* and get the ret */
sourceptr += last_ch; /* ...value */
if (*sourceptr != '\0') /** don't forget if we're at end! **/
sourceptr++;
return_value[last_ch] = '\0'; /* ..ending right */
buffers[depth] = sourceptr; /* save this, mate! */
return((char *) return_value); /* and we're outta here! */
}
END-OF-FILE
if [ "$filename" != "/dev/null" ]
then
size=`wc -c < $filename`
if [ $size != 10842 ]
then
echo $filename changed - should be 10842 bytes, not $size bytes
fi
chmod 644 $filename
fi
echo end of this archive file....
exit 0