sources-request@mirror.UUCP (07/02/86)
Submitted by: Dave Taylor <pyramid!hplabs!hpldat!taylor>
Mod.sources: Volume 6, Issue 38
Archive-name: elm/Part13
# Continuation of Shell Archive, created by hpldat!taylor
# This is part 13
# 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 utils ]
then
echo creating directory utils
mkdir utils
fi
# ---------- file utils/arepdaemon.c ----------
filename="utils/arepdaemon.c"
if [ -f $filename ]
then
echo File \"$filename\" already exists\! Skipping...
filename=/dev/null # throw it away
else
echo extracting file utils/arepdaemon.c...
fi
cat << 'END-OF-FILE' > $filename
/** arepdaemon.c **/
/** (C) Copyright 1986 Dave Taylor **/
/** Keep track of mail as it arrives, and respond by sending a 'recording'
file to the sender as new mail is received.
Note: the user program that interacts with this program is the
'autoreply' program and that should be consulted for further
usage information.
This program is part of the 'autoreply' system, and is designed
to run every hour and check all mailboxes listed in the file
"/etc/autoreply.data", where the data is in the form:
username replyfile current-mailfile-size
To avoid a flood of autoreplies, this program will NOT reply to mail
that contains header "X-Mailer: fastmail". Further, each time the
program responds to mail, the 'mailfile size' entry is updated in
the file /etc/autoreply.data to allow the system to be brought
down and rebooted without any loss of data or duplicate messages.
This daemon also uses a lock semaphore file, /usr/spool/uucp/LCK..arep,
to ensure that more than one copy of itself is never running. For this
reason, it is recommended that this daemon be started up each morning
from cron, since it will either start since it's needed or simply see
that the file is there and disappear.
Since this particular program is the main daemon answering any
number of different users, it must be run with uid root.
(C) 1985, Dave Taylor, HP Colorado Networks Operation
**/
#include <stdio.h>
#include <time.h>
#include <sys/types.h>
#include <sys/stat.h>
#include "defs.h"
static char ident[] = { WHAT_STRING };
#define arep_lock_file "/usr/spool/uucp/LCK..arep"
#define autoreply_file "/etc/autoreply.data"
#define fastmail "/usr/local/bin/fastmail"
#define logfile "/etc/autoreply.log" /* first choice */
#define logfile2 "/tmp/autoreply.log" /* second choice */
#define BEGINNING 0 /* see fseek(3S) for info */
#define SLEEP_TIME 3600 /* run once an hour */
#define MAX_PEOPLE 20 /* max number in program */
#define EXISTS 00 /* lock file exists?? */
#define MODE 0777 /* lockfile creation mode */
#define NLEN 20
#define remove_return(s) if (strlen(s) > 0) { \
if (s[strlen(s)-1] == '\n') \
s[strlen(s)-1] = '\0'; \
}
struct replyrec {
char username[NLEN]; /* login name of user */
char mailfile[SLEN]; /* name of mail file */
char replyfile[SLEN]; /* name of reply file */
long mailsize; /* mail file size */
int in_list; /* for new replies */
} reply_table[MAX_PEOPLE];
FILE *logfd; /* logfile (log action) */
long autoreply_size = 0L; /* size of autoreply file */
int active = 0; /* # of people 'enrolled' */
FILE *open_logfile(); /* forward declaration */
long bytes(); /* ditto */
main()
{
long size;
int person, data_changed;
if (! lock())
exit(0); /* already running! */
while (1) {
logfd = open_logfile(); /* open the log */
/* 1. check to see if autoreply table has changed.. */
if ((size = bytes(autoreply_file)) != autoreply_size) {
read_autoreply_file();
autoreply_size = size;
}
/* 2. now for each active person... */
data_changed = 0;
for (person = 0; person < active; person++) {
if ((size = bytes(reply_table[person].mailfile)) !=
reply_table[person].mailsize) {
if (size > reply_table[person].mailsize)
read_newmail(person);
/* else mail removed - resync */
reply_table[person].mailsize = size;
data_changed++;
}
}
/* 3. if data changed, update autoreply file */
if (data_changed)
update_autoreply_file();
close_logfile(); /* close the logfile again */
/* 4. Go to sleep... */
sleep(SLEEP_TIME);
}
}
int
read_autoreply_file()
{
/** We're here because the autoreply file has changed size!! It
could either be because someone has been added or because
someone has been removed...since the list will always be in
order (nice, eh?) we should have a pretty easy time of it...
**/
FILE *file;
char username[SLEN], replyfile[SLEN];
int person;
long size;
log("Autoreply data file has changed! Reading...");
if ((file = fopen(autoreply_file,"r")) == NULL) {
log("No-one is using autoreply...");
return(0);
}
for (person = 0; person < active; person++)
reply_table[person].in_list = 0;
while (fscanf(file, "%s %s %dl", username, replyfile, &size) != EOF) {
/* check to see if this person is already in the list */
if ((person = in_list(username)) != -1) {
reply_table[person].in_list = 1;
reply_table[person].mailsize = size; /* sync */
}
else { /* if not, add them */
if (active == MAX_PEOPLE) {
unlock();
exit(log("Couldn't add %s - already at max people!",
username));
}
log("adding %s to the active list", username);
strcpy(reply_table[active].username, username);
sprintf(reply_table[active].mailfile, "/usr/mail/%s", username);
strcpy(reply_table[active].replyfile, replyfile);
reply_table[active].mailsize = size;
reply_table[active].in_list = 1; /* obviously! */
active++;
}
}
/** now check to see if anyone has been removed... **/
for (person = 0; person < active; person++)
if (reply_table[person].in_list == 0) {
log("removing %s from the active list",
reply_table[person].username);
strcpy(reply_table[person].username,
reply_table[active-1].username);
strcpy(reply_table[person].mailfile,
reply_table[active-1].mailfile);
strcpy(reply_table[person].replyfile,
reply_table[active-1].replyfile);
reply_table[person].mailsize = reply_table[active-1].mailsize;
active--;
}
}
update_autoreply_file()
{
/** update the entries in the autoreply file... **/
FILE *file;
register int person;
if ((file = fopen(autoreply_file,"w")) == NULL) {
log("Couldn't update autoreply file!");
return;
}
for (person = 0; person < active; person++)
fprintf(file, "%s %s %ld\n",
reply_table[person].username,
reply_table[person].replyfile,
reply_table[person].mailsize);
fclose(file);
printf("updated autoreply file\n");
autoreply_size = bytes(autoreply_file);
}
int
in_list(name)
char *name;
{
/** search the current active reply list for the specified username.
return the index if found, or '-1' if not. **/
register int index;
for (index = 0; index < active; index++)
if (strcmp(name, reply_table[index].username) == 0)
return(index);
return(-1);
}
read_newmail(person)
int person;
{
/** Read the new mail for the specified person. **/
FILE *mailfile;
char from_whom[LONG_SLEN], subject[SLEN];
int sendit;
log("New mail for %s", reply_table[person].username);
if ((mailfile = fopen(reply_table[person].mailfile,"r")) == NULL)
return(log("can't open mailfile for user %s",
reply_table[person].username));
if (fseek(mailfile, reply_table[person].mailsize, BEGINNING) == -1)
return(log("couldn't seek to %ld in mail file!",
reply_table[person].mailsize));
while (get_return(mailfile, person, from_whom, subject, &sendit) != -1)
if (sendit)
reply_to_mail(person, from_whom, subject);
return;
}
int
get_return(file, person, from, subject, sendit)
FILE *file;
int person, *sendit;
char *from, *subject;
{
/** Reads the new message and return the from and subject lines.
sendit is set to true iff it isn't a machine generated msg
**/
char name1[SLEN], name2[SLEN], lastname[SLEN];
char buffer[LONG_SLEN], hold_return[NLEN];
int done = 0, in_header = 0;
from[0] = '\0';
*sendit = 1;
while (! done) {
if (fgets(buffer, LONG_SLEN, file) == NULL)
return(-1);
if (first_word(buffer, "From ")) {
in_header++;
sscanf(buffer, "%*s %s", hold_return);
}
else if (in_header) {
if (first_word(buffer, ">From")) {
sscanf(buffer,"%*s %s %*s %*s %*s %*s %*s %*s %*s %s", name1, name2);
add_site(from, name2, lastname);
}
else if (first_word(buffer,"Subject:")) {
remove_return(buffer);
strcpy(subject, (char *) (buffer + 8));
}
else if (first_word(buffer,"X-Mailer: fastmail"))
*sendit = 0;
else if (strlen(buffer) == 1)
done = 1;
}
}
if (from[0] == '\0')
strcpy(from, hold_return); /* default address! */
else
add_site(from, name1, lastname); /* get the user name too! */
return(0);
}
add_site(buffer, site, lastsite)
char *buffer, *site, *lastsite;
{
/** add site to buffer, unless site is 'uucp', or the same as
lastsite. If not, set lastsite to site.
**/
char local_buffer[LONG_SLEN], *strip_parens();
if (strcmp(site, "uucp") != 0)
if (strcmp(site, lastsite) != 0) {
if (buffer[0] == '\0')
strcpy(buffer, strip_parens(site)); /* first in list! */
else {
sprintf(local_buffer,"%s!%s", buffer, strip_parens(site));
strcpy(buffer, local_buffer);
}
strcpy(lastsite, strip_parens(site)); /* don't want THIS twice! */
}
}
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);
}
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';
}
reply_to_mail(person, from, subject)
int person;
char *from, *subject;
{
/** Respond to the message from the specified person with the
specified subject... **/
char buffer[SLEN];
if (strlen(subject) == 0)
strcpy(subject, "Auto-reply Mail");
else if (! first_word(subject,"Auto-reply")) {
sprintf(buffer, "Auto-reply to:%s", subject);
strcpy(subject, buffer);
}
log("auto-replying to '%s'", from);
mail(from, subject, reply_table[person].replyfile, person);
}
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);
}
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) {
unlock();
exit(fprintf(stderr,"Error %d attempting fstat on %s", errno, name));
}
else
ok = 0;
return(ok ? buffer.st_size : 0);
}
mail(to, subject, filename, person)
char *to, *subject, *filename;
int person;
{
/** Mail 'file' to the user from person... **/
char buffer[VERY_LONG_STRING];
sprintf(buffer, "%s -f '%s [autoreply]' -s '%s' %s %s",
fastmail, reply_table[person].username,
subject, filename, to);
system(buffer);
}
log(message, arg)
char *message;
char *arg;
{
/** Put log entry into log file. Use the format:
date-time: <message>
**/
struct tm *localtime(), *thetime;
long time(), clock;
char buffer[SLEN];
/** first off, get the time and date **/
clock = time((long *) 0); /* seconds since ??? */
thetime = localtime(&clock); /* and NOW the time... */
/** then put the message out! **/
sprintf(buffer, message, arg);
fprintf(logfd,"%d/%d-%d:%02d: %s\n",
thetime->tm_mon+1, thetime->tm_mday,
thetime->tm_hour, thetime->tm_min,
buffer);
}
FILE *open_logfile()
{
/** open the logfile. returns a valid file descriptor **/
FILE *fd;
if ((fd = fopen(logfile, "a")) == 0)
if ((fd = fopen(logfile2, "a")) == 0) {
unlock();
exit(1); /* give up! */
}
return( (FILE *) fd);
}
close_logfile()
{
/** Close the logfile until needed again. **/
fclose(logfd);
}
char *strip_parens(string)
char *string;
{
/** Return string with all parenthesized information removed.
This is a non-destructive algorithm... **/
static char buffer[LONG_SLEN];
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);
}
/*** LOCK and UNLOCK - ensure only one copy of this daemon running at any
given time by using a file existance semaphore (wonderful stuff!) ***/
lock()
{
/** Try to create the lock file. If it's there, or we can't
create it for some stupid reason, return zero, otherwise,
a non-zero return code indicates success in locking this
process in. **/
if (access(arep_lock_file, EXISTS) == 0)
return(0); /* file already exists!! */
if (creat(arep_lock_file, MODE) == -1)
return(0); /* can't create file!! */
return(1);
}
unlock()
{
/** remove lock file if it's there! **/
(void) unlink(arep_lock_file);
}
END-OF-FILE
if [ "$filename" != "/dev/null" ]
then
size=`wc -c < $filename`
if [ $size != 13380 ]
then
echo $filename changed - should be 13380 bytes, not $size bytes
fi
chmod 666 $filename
fi
# ---------- file utils/autoreply.c ----------
filename="utils/autoreply.c"
if [ -f $filename ]
then
echo File \"$filename\" already exists\! Skipping...
filename=/dev/null # throw it away
else
echo extracting file utils/autoreply.c...
fi
cat << 'END-OF-FILE' > $filename
/** autoreply.c **/
/** This is the front-end for the autoreply system, and performs two
functions: it either adds the user to the list of people using the
autoreply function (starting the daemon if no-one else) or removes
a user from the list of people.
Usage: autoreply filename
autoreply "off"
or autoreply [to find current status]
(C) 1986, Dave Taylor
**/
#include <stdio.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include "defs.h"
static char ident[] = { WHAT_STRING };
#define READ_ACCESS 04 /* is file readable? */
#define tempdir "/tmp/arep" /* file prefix */
#define autoreply_file "/etc/autoreply.data" /* autoreply data file */
extern int errno; /* system error code */
char username[NLEN]; /* login name of user */
main(argc, argv)
int argc;
char *argv[];
{
char filename[SLEN];
if (argc > 2) {
printf("Usage: %s <filename>\tto start autoreply,\n", argv[0]);
printf(" %s off\t\tto turn off autoreply\n", argv[0]);
printf(" or %s \t\tto check current status\n", argv[0]);
exit(1);
}
(void) cuserid(username);
if (argc == 1 || strcmp(argv[1], "off") == 0)
remove_user((argc == 1));
else {
strcpy(filename, argv[1]);
if (access(filename,READ_ACCESS) != 0) {
printf("Error: Can't read file '%s'\n", filename);
exit(1);
}
if (filename[0] != '/') /* prefix home directory */
sprintf(filename,"%s/%s", getenv("HOME"), argv[1]);
add_user(filename);
}
exit(0);
}
remove_user(stat_only)
int stat_only;
{
/** Remove the user from the list of currently active autoreply
people. If 'stat_only' is set, then just list the name of
the file being used to autoreply with, if any. **/
FILE *temp, *repfile;
char tempfile[SLEN], user[SLEN], filename[SLEN];
int c, copied = 0, found = 0;
long filesize, bytes();
if (! stat_only) {
sprintf(tempfile, "%s.%06d", tempdir, getpid());
if ((temp = fopen(tempfile, "w")) == NULL) {
printf("Error: couldn't open tempfile '%s'. Not removed\n",
tempfile);
exit(1);
}
}
if ((repfile = fopen(autoreply_file, "r")) == NULL) {
if (stat_only) {
printf("You're not currently autoreplying to mail.\n");
exit(0);
}
printf("No-one is autoreplying to their mail!\n");
exit(0);
}
/** copy out of real replyfile... **/
while (fscanf(repfile, "%s %s %ld", user, filename, &filesize) != EOF)
if (strcmp(user, username) != 0) {
if (! stat_only) {
copied++;
fprintf(tempfile, "%s %s %ld\n", user, filename, filesize);
}
}
else {
if (stat_only) {
printf("You're currently autoreplying to mail with the file %s\n", filename);
exit(0);
}
found++;
}
fclose(temp);
fclose(repfile);
if (! found) {
printf("You're not currently autoreplying to mail%s\n",
stat_only? "." : "!");
if (! stat_only)
unlink(tempfile);
exit(! stat_only);
}
/** now copy tempfile back into replyfile **/
if (copied == 0) { /* removed the only person! */
unlink(autoreply_file);
}
else { /* save everyone else */
if ((temp = fopen(tempfile,"r")) == NULL) {
printf("Error: couldn't reopen tempfile '%s'. Not removed.\n",
tempfile);
unlink(tempfile);
exit(1);
}
if ((repfile = fopen(autoreply_file, "w")) == NULL) {
printf(
"Error: couldn't reopen autoreply file for writing! Not removed.\n");
unlink(tempfile);
exit(1);
}
while ((c = getc(temp)) != EOF)
putc(c, repfile);
fclose(temp);
fclose(repfile);
}
unlink(tempfile);
if (found > 1)
printf("Warning: your username appeared %d times!! Removed all\n",
found);
else
printf("You've been removed from the autoreply table.\n");
}
add_user(filename)
char *filename;
{
/** add the user to the autoreply file... **/
FILE *repfile;
char mailfile[SLEN];
long bytes();
if ((repfile = fopen(autoreply_file, "a")) == NULL) {
printf("Error: couldn't open the autoreply file! Not added\n");
exit(1);
}
sprintf(mailfile,"%s/%s", mailhome, username);
fprintf(repfile,"%s %s %ld\n", username, filename, bytes(mailfile));
fclose(repfile);
printf("You've been added to the autoreply system.\n");
}
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)
exit(fprintf(stderr,"Error %d attempting fstat on %s", errno, name));
else
ok = 0;
return(ok ? buffer.st_size : 0L);
}
END-OF-FILE
if [ "$filename" != "/dev/null" ]
then
size=`wc -c < $filename`
if [ $size != 4746 ]
then
echo $filename changed - should be 4746 bytes, not $size bytes
fi
chmod 666 $filename
fi
# ---------- file utils/fastmail.c ----------
filename="utils/fastmail.c"
if [ -f $filename ]
then
echo File \"$filename\" already exists\! Skipping...
filename=/dev/null # throw it away
else
echo extracting file utils/fastmail.c...
fi
cat << 'END-OF-FILE' > $filename
/** fastmail.c **/
/** This program is specifically written for group mailing lists and
such batch type mail processing. It does NOT use aliases at all,
it does NOT read the /etc/password file to find the From: name
of the user and does NOT expand any addresses. It is meant
purely as a front-end for either /bin/mail or /usr/lib/sendmail
(according to what is available on the current system).
**** This program should be used with CAUTION *****
(C) Copyright 1985 Dave Taylor
**/
/** The calling sequence for this program is:
fastmail {args} filename full-email-address
where args could be any (or all) of;
-b bcc-list (Blind carbon copies to)
-c cc-list (carbon copies to)
-d (debug on)
-f from (from name)
-r reply-to-address (Reply-To:)
-s subject (subject of message)
**/
#include <stdio.h>
#ifdef BSD
# include <sys/time.h>
#else
# include <time.h>
#endif
#include "defs.h"
static char ident[] = { WHAT_STRING };
#define binrmail "/bin/rmail"
#define temphome "/tmp/fastmail."
#define DONE 0
#define ERROR -1
char *optional_arg; /* optional argument as we go */
int opt_index; /* argnum + 1 when we leave */
char *arpa_dayname[] = { "Sun", "Mon", "Tue", "Wed", "Thu",
"Fri", "Sat", "" };
char *arpa_monname[] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun",
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec", ""};
char *get_arpa_date();
#ifdef BSD
char *timezone();
#else
extern char *tzname[];
#endif
main(argc, argv)
int argc;
char *argv[];
{
FILE *tempfile;
char hostname[NLEN], username[NLEN], from_string[SLEN], subject[SLEN];
char filename[SLEN], tempfilename[SLEN], command_buffer[256];
char replyto[SLEN], cc_list[SLEN], bcc_list[SLEN], to_list[SLEN];
int c, sendmail_available, debug = 0;
replyto[0] = '\0';
cc_list[0] = '\0';
bcc_list[0] = '\0';
while ((c = get_options(argc, argv, "b:c:df:r:s:")) > 0) {
switch (c) {
case 'b' : strcpy(bcc_list, optional_arg); break;
case 'c' : strcpy(cc_list, optional_arg); break;
case 'd' : debug++; break;
case 'f' : strcpy(from_string, optional_arg); break;
case 'r' : strcpy(replyto, optional_arg); break;
case 's' : strcpy(subject, optional_arg); break;
}
}
if (c == ERROR) {
fprintf(stderr,"Usage: fastmail {args} filename address(es)\n");
fprintf(stderr, " where {args} can be;\n");
fprintf(stderr,"\t-b bcc-list\n\t-c cc-list\n\t-d\n\t-f from-name\n");
fprintf(stderr, "\t-r reply-to\n\t-s subject\n\n");
exit(1);
}
if (opt_index > argc) {
fprintf(stderr,"Usage: fastmail {args} filename address(es)\n");
fprintf(stderr, " where {args} can be;\n");
fprintf(stderr,"\t-b bcc-list\n\t-c cc-list\n\t-d\n\t-f from-name\n");
fprintf(stderr, "\t-r reply-to\n\t-s subject\n\n");
exit(1);
}
strcpy(filename, argv[opt_index++]);
if (opt_index > argc) {
fprintf(stderr,"Usage: fastmail {args} filename address(es)\n");
fprintf(stderr, " where {args} can be;\n");
fprintf(stderr,"\t-b bcc-list\n\t-c cc-list\n\t-d\n\t-f from-name\n");
fprintf(stderr, "\t-r reply-to\n\t-s subject\n\n");
exit(1);
}
gethostname(hostname, sizeof(hostname));
strcpy(username, getlogin());
if (strlen(username) == 0)
cuserid(username);
if (access(filename, READ_ACCESS) == -1)
exit(fprintf(stderr, "Error: can't find file %s!\n", filename));
sprintf(tempfilename, "%s%d", temphome, getpid());
if ((tempfile = fopen(tempfilename, "w")) == NULL)
exit(fprintf(stderr, "Couldn't open temp file %s\n", tempfilename));
if (strlen(from_string) > 0)
fprintf(tempfile, "From: %s!%s (%s)\n",
hostname, username, from_string);
else
fprintf(tempfile, "From: %s!%s\n", hostname, username);
fprintf(tempfile, "Date: %s\n", get_arpa_date());
if (strlen(subject) > 0)
fprintf(tempfile, "Subject: %s\n", subject);
if (strlen(replyto) > 0)
fprintf(tempfile, "Reply-To: %s\n", replyto);
while (opt_index < argc)
sprintf(to_list, "%s%s%s", to_list, (strlen(to_list) > 0? ", ":""),
argv[opt_index++]);
fprintf(tempfile, "To: %s\n", to_list);
if (strlen(cc_list) > 0)
fprintf(tempfile, "Cc: %s\n", cc_list);
if (strlen(bcc_list) > 0)
fprintf(tempfile, "Bcc: %s\n", bcc_list); /* trust xport */
fprintf(tempfile, "X-Mailer: fastmail [version %s]\n", VERSION);
fprintf(tempfile, "\n");
fclose(tempfile);
/** now we'll cat both files to /bin/rmail or sendmail... **/
sendmail_available = (access(sendmail, EXECUTE_ACCESS) != -1);
printf("Mailing to %s%s%s%s%s [via %s]\n", to_list,
(strlen(cc_list) > 0 ? " ":""), cc_list,
(strlen(bcc_list) > 0 ? " ":""), bcc_list,
sendmail_available? "sendmail" : "rmail");
sprintf(command_buffer, "cat %s %s | %s '%s %s %s'",
tempfilename, filename,
sendmail_available? sendmail : mailer,
to_list, cc_list, bcc_list);
if (debug)
printf("%s\n", command_buffer);
system(command_buffer);
unlink(tempfilename);
}
char *get_arpa_date()
{
/** returns an ARPA standard date. The format for the date
according to DARPA document RFC-822 is exemplified by;
Mon, 12 Aug 85 6:29:08 MST
**/
static char buffer[SLEN]; /* static character buffer */
struct tm *the_time, /* Time structure, see CTIME(3C) */
*localtime();
long junk; /* time in seconds.... */
#ifdef BSD
struct timeval time_val;
struct timezone time_zone;
#endif
#ifdef BSD
gettimeofday(&time_val, &time_zone);
junk = time_val.tv_sec;
#else
junk = time(0); /* this must be here for it to work! */
#endif
the_time = localtime(&junk);
sprintf(buffer, "%s, %d %s %d %d:%02d:%02d %s",
arpa_dayname[the_time->tm_wday],
the_time->tm_mday % 32,
arpa_monname[the_time->tm_mon],
the_time->tm_year % 100,
the_time->tm_hour % 24,
the_time->tm_min % 61,
the_time->tm_sec % 61,
#ifdef BSD
timezone(time_zone.tz_minuteswest, time_zone.tz_dsttime));
#else
tzname[the_time->tm_isdst]);
#endif
return( (char *) buffer);
}
/** Starting argument parsing routine.
Called as "get_options(argc, argv, options)" where options is a string
of the form "abc:d" indicating that 'a' 'b' and 'd' are flags and
'c' is a flag with a trailing argument. Optional arguments are
returned in the external char * variable "optional_arg", and the
external int "opt_index" is set to the first entry in the argv list
that wasn't processed (ie after the flags).
For example, the C compiler would have something of the form
getopt(argc, argv, "Oo:l:") to allow "cc -O -o output -l lib file.c"
(C) Copyright 1986, Dave Taylor
**/
int _indx = 1, _argnum = 1;
int
get_options(argc, argv, options)
int argc;
char *argv[], *options;
{
/** Returns the character argument next, and optionally instantiates
"argument" to the argument associated with the particular option
**/
char *word, *strchr();
if (_indx >= strlen(argv[_argnum])) {
_argnum++;
_indx = 1; /* zeroeth char is '-' */
}
if (_argnum >= argc) {
opt_index = argc;
return(DONE);
}
if (argv[_argnum][0] != '-') {
opt_index = _argnum;
return(DONE);
}
word = strchr(options, argv[_argnum][_indx++]);
if (strlen(word) == 0)
return(ERROR);
if (word[1] == ':') {
/** Two possibilities - either tailing end of this argument or the
next argument in the list **/
if (_indx < strlen(argv[_argnum])) { /* first possibility */
optional_arg = (char *) (argv[_argnum] + _indx);
_argnum++;
_indx = 1;
}
else { /* second choice */
if (++_argnum >= argc)
return(ERROR); /* no argument!! */
optional_arg = (char *) argv[_argnum++];
_indx = 1;
}
}
return((int) word[0]);
}
END-OF-FILE
if [ "$filename" != "/dev/null" ]
then
size=`wc -c < $filename`
if [ $size != 7799 ]
then
echo $filename changed - should be 7799 bytes, not $size bytes
fi
chmod 666 $filename
fi
# ---------- file utils/from.c ----------
filename="utils/from.c"
if [ -f $filename ]
then
echo File \"$filename\" already exists\! Skipping...
filename=/dev/null # throw it away
else
echo extracting file utils/from.c...
fi
cat << 'END-OF-FILE' > $filename
/** from.c **/
/** print out whom each message is from in the pending mailbox
or specified one, including a subject line if available..
Added PREFER_UUCP knowledge 6/86
(C) Copyright 1986 Dave Taylor **/
#include <stdio.h>
#include "defs.h"
static char ident[] = { WHAT_STRING };
#define LINEFEED (char) 10
#define metachar(c) (c == '=' || c == '+' || c == '%')
FILE *mailfile;
char *expand_define();
main(argc, argv)
int argc;
char *argv[];
{
char infile[LONG_SLEN], username[SLEN];
if (argc > 2)
exit(printf("Usage: %s {filename}\n", argv[0]));
if (argc == 2)
strcpy(infile, argv[1]);
else {
strcpy(username, getlogin());
if (strlen(username) == 0)
cuserid(username);
sprintf(infile,"%s/%s",mailhome, username);
}
if (metachar(infile[0]))
if (expand(infile) == 0)
printf("%s: couldn't expand filename %s!\n", argv[0], infile);
if ((mailfile = fopen(infile,"r")) == NULL) {
if (argc == 1)
printf("No mail!\n");
else
printf("%s: Couldn't open file %s\n", argv[0], infile);
}
else
if (read_headers()==0)
printf("No messages in mailbox!\n");
}
int
read_headers()
{
/** read the headers, output as found **/
char buffer[LONG_SLEN], from_whom[SLEN], subject[SLEN];
register int subj = 0, in_header = 1, count = 0;
while (fgets(buffer, LONG_SLEN, mailfile) != NULL) {
if (first_word(buffer,"From ")) {
if (real_from(buffer, from_whom)) {
subj = 0;
in_header = 1;
}
}
else if (in_header) {
if (first_word(buffer,">From"))
forwarded(buffer, from_whom); /* return address */
else if (first_word(buffer,"Subject:") ||
first_word(buffer,"Re:")) {
if (! subj++) {
remove_first_word(buffer);
strcpy(subject, buffer);
}
}
else if (first_word(buffer,"From:"))
parse_arpa_from(buffer, from_whom);
else if (buffer[0] == LINEFEED) {
in_header = 0; /* in body of message! */
show_header(from_whom, subject);
from_whom[0] = 0;
subject[0] = 0;
count++;
}
}
}
return(count);
}
int
real_from(buffer, who)
char *buffer, *who;
{
/***** returns true iff 's' has the seven 'from' fields,
initializing the who to the sender *****/
char junk[80];
junk[0] = '\0';
sscanf(buffer, "%*s %s %*s %*s %*s %*s %s",
who, junk);
return(junk[0] != '\0');
}
forwarded(buffer, who)
char *buffer, *who;
{
/** change 'from' and date fields to reflect the ORIGINATOR of
the message by iteratively parsing the >From fields... **/
char machine[80], buff[80];
machine[0] = '\0';
sscanf(buffer, "%*s %s %*s %*s %*s %*s %*s %*s %*s %s",
who, machine);
if (machine[0] == '\0') /* try for srm address */
sscanf(buffer, "%*s %s %*s %*s %*s %*s %*s %*s %s",
who, machine);
if (machine[0] == '\0')
sprintf(buff,"anonymous");
else
sprintf(buff,"%s!%s", machine, who);
strncpy(who, buff, 80);
}
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);
}
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';
}
show_header(from, subject)
char *from, *subject;
{
/** output header in clean format, including abbreviation
of return address if more than one machine name is
contained within it! **/
char buffer[SLEN];
int loc, i=0, exc=0;
#ifdef PREFER_UUCP
if (chloc(from,'!') != -1 && in_string(from, BOGUS_INTERNET))
from[strlen(from) - strlen(BOGUS_INTERNET)] = '\0';
#endif
loc = strlen(from);
while (exc < 2 && loc > 0)
if (from[--loc] == '!')
exc++;
if (exc == 2) { /* lots of machine names! Get last one */
loc++;
while (loc < strlen(from) && loc < SLEN)
buffer[i++] = from[loc++];
buffer[i] = '\0';
printf("%-20s %s\n", buffer, subject);
}
else
printf("%-20s %s\n", from, subject);
}
parse_arpa_from(buffer, newfrom)
char *buffer, *newfrom;
{
/** try to parse the 'From:' line given... It can be in one of
two formats:
From: Dave Taylor <hpcnou!dat>
or From: hpcnou!dat (Dave Taylor)
Change 'newfrom' ONLY if sucessfully parsed this entry and
the resulting name is non-null!
**/
char temp_buffer[SLEN], *temp;
register int i, j = 0;
temp = (char *) temp_buffer;
temp[0] = '\0';
no_ret(buffer); /* blow away '\n' char! */
if (lastch(buffer) == '>') {
for (i=strlen("From: "); buffer[i] != '\0' && buffer[i] != '<' &&
buffer[i] != '('; i++)
temp[j++] = buffer[i];
temp[j] = '\0';
}
else if (lastch(buffer) == ')') {
for (i=strlen(buffer)-2; buffer[i] != '\0' && buffer[i] != '(' &&
buffer[i] != '<'; i--)
temp[j++] = buffer[i];
temp[j] = '\0';
reverse(temp);
}
if (strlen(temp) > 0) { /* mess with buffer... */
/* remove leading spaces... */
while (whitespace(temp[0]))
temp = (char *) (temp + 1); /* increment address! */
/* remove trailing spaces... */
i = strlen(temp) - 1;
while (whitespace(temp[i]))
temp[i--] = '\0';
/* if anything is left, let's change 'from' value! */
if (strlen(temp) > 0)
strcpy(newfrom, temp);
}
}
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
expand(infile)
char *infile;
{
/** Expand the filename since the first character is a meta-
character that should expand to the "maildir" variable
in the users ".elmrc" file...
Note: this is a brute force way of getting the entry out
of the .elmrc file, and isn't recommended for the faint
of heart!
**/
FILE *rcfile;
char buffer[SLEN], *expanded_dir, *home, *getenv(), *bufptr;
int foundit = 0;
bufptr = (char *) buffer; /* same address */
if ((home = getenv("HOME")) == NULL) {
printf(
"Can't expand environment variable $HOME to find .elmrc file!\n");
exit(1);
}
sprintf(buffer, "%s/%s", home, elmrcfile);
if ((rcfile = fopen(buffer, "r")) == NULL) {
printf("Can't open your \".elmrc\" file (%s) for reading!\n",
buffer);
exit(1);
}
while (fgets(buffer, SLEN, rcfile) != NULL && ! foundit) {
if (strncmp(buffer, "maildir", 7) == 0 ||
strncmp(buffer, "folders", 7) == 0) {
while (*bufptr != '=' && *bufptr)
bufptr++;
bufptr++; /* skip the equals sign */
while (whitespace(*bufptr) && *bufptr)
bufptr++;
home = bufptr; /* remember this address */
while (! whitespace(*bufptr) && *bufptr != '\n')
bufptr++;
*bufptr = '\0'; /* remove trailing space */
foundit++;
}
}
fclose(rcfile); /* be nice... */
if (! foundit) {
printf("Couldn't find \"maildir\" in your .elmrc file!\n");
exit(1);
}
/** Home now points to the string containing your maildir, with
no leading or trailing white space...
**/
expanded_dir = expand_define(home);
sprintf(buffer, "%s%s%s", expanded_dir,
(expanded_dir[strlen(expanded_dir)-1] == '/' ||
infile[0] == '/') ? "" : "/", (char *) infile+1);
strcpy(infile, buffer);
}
char *expand_define(maildir)
char *maildir;
{
/** This routine expands any occurances of "~" or "$var" in
the users definition of their maildir directory out of
their .elmrc file.
Again, another routine not for the weak of heart or staunch
of will!
**/
static char buffer[SLEN]; /* static buffer AIEE!! */
char name[SLEN], /* dynamic buffer!! (?) */
*nameptr, /* pointer to name?? */
*value; /* char pointer for munging */
if (*maildir == '~')
sprintf(buffer, "%s%s", getenv("HOME"), ++maildir);
else if (*maildir == '$') { /* shell variable */
/** break it into a single word - the variable name **/
strcpy(name, (char *) maildir + 1); /* hurl the '$' */
nameptr = (char *) name;
while (*nameptr != '/' && *nameptr) nameptr++;
*nameptr = '\0'; /* null terminate */
/** got word "name" for expansion **/
if ((value = getenv(name)) == NULL) {
printf("Couldn't expand shell variable $%s in .elmrc!\n", name);
exit(1);
}
sprintf(buffer, "%s%s", value, maildir + strlen(name) + 1);
}
return( ( char *) buffer);
}
END-OF-FILE
if [ "$filename" != "/dev/null" ]
then
size=`wc -c < $filename`
if [ $size != 8783 ]
then
echo $filename changed - should be 8783 bytes, not $size bytes
fi
chmod 666 $filename
fi
# ---------- file utils/newmail.c ----------
filename="utils/newmail.c"
if [ -f $filename ]
then
echo File \"$filename\" already exists\! Skipping...
filename=/dev/null # throw it away
else
echo extracting file utils/newmail.c...
fi
cat << 'END-OF-FILE' > $filename
/** newmail.c **/
/** Keep track of the mail for the current user...if new mail
arrives, output a line of the form;
Mail has arrived from <name> - <subject>
where <name> is either the persons full name, or machine!login.
If there is no subject, it will say.
Added: you can specify a file other than the mailbox to keep
track of - if an argument is given, the program will try
to use it as a filename...
Also, the program will quit when you log off of the machine.
(C) 1986, Dave Taylor
**/
#ifdef AUTO_BACKGROUND
#include <signal.h> /* background jobs ignore some signals... */
#endif
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include "defs.h"
static char ident[] = { WHAT_STRING };
#define LINEFEED (char) 10
#define BEGINNING 0 /* seek fseek(3S) */
#define SLEEP_TIME 60
#define NO_SUBJECT "(No Subject Specified)"
FILE *mailfile;
long bytes();
main(argc, argv)
int argc;
char *argv[];
{
char filename[LONG_SLEN];
long size, newsize;
if (argc > 2)
fprintf(stderr, "Usage: %s [filename] &\n", argv[0]);
else if (argc == 2) {
strcpy(filename, argv[1]);
if (access(filename, ACCESS_EXISTS) == -1) {
fprintf(stderr,"%s: Can't open file %s to keep track of!\n",
argv[0], filename);
exit(1);
}
}
else
sprintf(filename,"%s/%s",mailhome, getlogin());
#ifdef AUTO_BACKGROUND
if (fork()) /* automatically puts this task in background! */
exit(0);
signal(SIGINT, SIG_IGN);
signal(SIGQUIT, SIG_IGN);
signal(SIGHUP, SIG_DFL); /* so we exit when logged out */
#endif
size = bytes(filename);
mailfile = (FILE *) NULL;
while (1) {
#ifndef AUTO_BACKGROUND /* won't work if we're nested this deep! */
if (getppid() == 1) /* we've lost our shell! */
exit();
#endif
/** Note the lack of error checking on the fopen() (Philip Peake
did!) - this is okay since if it fails we don't have any
mail and we can sleep(60) and try again later...
**/
if (mailfile == (FILE *) NULL)
mailfile = fopen(filename,"r");
if ((newsize = bytes(filename)) > size) { /* new mail */
fseek(mailfile, size, BEGINNING); /* skip all current mail */
size = newsize;
printf("\n\r"); /* blank lines surrounding message */
read_headers();
printf("\n\r");
}
else if (newsize != size) {
size = newsize; /* mail's been removed... */
(void) fclose(mailfile); /* close it and ... */
mailfile = (FILE *) NULL; /* let's reopen the file */
}
sleep(SLEEP_TIME);
}
}
int
read_headers()
{
/** read the headers, output as found **/
char buffer[LONG_SLEN], from_whom[SLEN], subject[SLEN];
register int subj = 0, in_header = 1, count = 0;
while (fgets(buffer, LONG_SLEN, mailfile) != NULL) {
if (first_word(buffer,"From ")) {
if (real_from(buffer, from_whom)) {
subj = 0;
in_header = 1;
}
}
else if (in_header) {
if (first_word(buffer,">From"))
forwarded(buffer, from_whom); /* return address */
else if (first_word(buffer,"Subject:") ||
first_word(buffer,"Re:")) {
if (! subj++) {
remove_first_word(buffer);
strcpy(subject, buffer);
}
}
else if (first_word(buffer,"From:"))
parse_arpa_from(buffer, from_whom);
else if (buffer[0] == LINEFEED) {
in_header = 0; /* in body of message! */
show_header(from_whom, subject);
from_whom[0] = 0;
subject[0] = 0;
count++;
}
}
}
return(count);
}
int
real_from(buffer, who)
char *buffer, *who;
{
/***** returns true iff 's' has the seven 'from' fields,
initializing the who to the sender *****/
char junk[80];
junk[0] = '\0';
sscanf(buffer, "%*s %s %*s %*s %*s %*s %s",
who, junk);
return(junk[0] != '\0');
}
forwarded(buffer, who)
char *buffer, *who;
{
/** change 'from' and date fields to reflect the ORIGINATOR of
the message by iteratively parsing the >From fields... **/
char machine[80], buff[80];
machine[0] = '\0';
sscanf(buffer, "%*s %s %*s %*s %*s %*s %*s %*s %*s %s",
who, machine);
if (machine[0] == '\0') /* try for srm address */
sscanf(buffer, "%*s %s %*s %*s %*s %*s %*s %*s %s",
who, machine);
if (machine[0] == '\0')
sprintf(buff,"anonymous");
else
sprintf(buff,"%s!%s", machine, who);
strncpy(who, buff, 80);
}
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);
}
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';
}
show_header(from, subject)
char *from, *subject;
{
/** output header in clean format, including abbreviation
of return address if more than one machine name is
contained within it! **/
char buffer[SLEN];
int loc, i=0, exc=0;
#ifdef PREFER_UUCP
if (chloc(from, '!') != -1 && in_string(from, BOGUS_INTERNET))
from[strlen(from) - strlen(BOGUS_INTERNET)] = '\0';
#endif
loc = strlen(from);
while (exc < 2 && loc > 0)
if (from[--loc] == '!')
exc++;
if (exc == 2) { /* lots of machine names! Get last one */
loc++;
while (loc < strlen(from) && loc < SLEN)
buffer[i++] = from[loc++];
buffer[i] = '\0';
strcpy(from, buffer);
}
if (strlen(subject) < 2)
strcpy(subject, NO_SUBJECT);
printf(">> New mail from %s - %s\n\r", from, subject);
}
parse_arpa_from(buffer, newfrom)
char *buffer, *newfrom;
{
/** try to parse the 'From:' line given... It can be in one of
two formats:
From: Dave Taylor <hpcnou!dat>
or From: hpcnou!dat (Dave Taylor)
Change 'newfrom' ONLY if sucessfully parsed this entry and
the resulting name is non-null!
**/
char temp_buffer[SLEN], *temp;
register int i, j = 0;
temp = (char *) temp_buffer;
temp[0] = '\0';
no_ret(buffer); /* blow away '\n' char! */
if (lastch(buffer) == '>') {
for (i=strlen("From: "); buffer[i] != '\0' && buffer[i] != '<' &&
buffer[i] != '('; i++)
temp[j++] = buffer[i];
temp[j] = '\0';
}
else if (lastch(buffer) == ')') {
for (i=strlen(buffer)-2; buffer[i] != '\0' && buffer[i] != '(' &&
buffer[i] != '<'; i--)
temp[j++] = buffer[i];
temp[j] = '\0';
reverse(temp);
}
if (strlen(temp) > 0) { /* mess with buffer... */
/* remove leading spaces... */
while (whitespace(temp[0]))
temp = (char *) (temp + 1); /* increment address! */
/* remove trailing spaces... */
i = strlen(temp) - 1;
while (whitespace(temp[i]))
temp[i--] = '\0';
/* if anything is left, let's change 'from' value! */
if (strlen(temp) > 0)
strcpy(newfrom, temp);
}
}
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);
}
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)
exit(fprintf(stderr,"Error %d attempting fstat on %s", errno, name));
else
ok = 0;
return(ok ? buffer.st_size : 0);
}
END-OF-FILE
if [ "$filename" != "/dev/null" ]
then
size=`wc -c < $filename`
if [ $size != 7761 ]
then
echo $filename changed - should be 7761 bytes, not $size bytes
fi
chmod 666 $filename
fi
# ---------- file utils/newalias.c ----------
filename="utils/newalias.c"
if [ -f $filename ]
then
echo File \"$filename\" already exists\! Skipping...
filename=/dev/null # throw it away
else
echo extracting file utils/newalias.c...
fi
cat << 'END-OF-FILE' > $filename
/** newalias.c **/
/** (C) Copyright 1986 Dave Taylor **/
/** Install a new set of aliases for the 'Elm' mailer.
If invoked with a specific filename, it assumes that
it is working with an individual users alias tables, and
generates the .alias.hash and .alias.data files in their
home directory.
If, however, it is invoked with no arguments, then
it assumes that the user is updating the system alias
file and uses the defaults for everything.
The format for the input file is;
alias1, alias2, ... : username : address
or alias1, alias2, ... : groupname: member, member, member, ...
member, member, member, ...
"-q" flag added: 6/17/86
**/
#ifdef BSD
# include <sys/file.h>
#else
# include <fcntl.h>
#endif
#include <stdio.h>
#include "defs.h" /* ELM system definitions */
static char ident[] = { WHAT_STRING };
#ifndef TAB
# define TAB '\t' /* TAB character! */
#endif
#define alias_hash ".alias_hash"
#define alias_data ".alias_data"
#define alias_text ".alias_text"
#define group(string) (strpbrk(string,", ") != NULL)
struct alias_rec
shash_table[MAX_SALIASES]; /* the actual hash table */
struct alias_rec
uhash_table[MAX_UALIASES]; /* the actual hash table */
int hash_table_loaded=0; /* is system table actually loaded? */
int buff_loaded; /* for file input overlap... */
int error= 0; /* if errors, don't save! */
int system=0; /* system file updating? */
int count=0; /* how many aliases so far? */
long offset = 0L; /* data file line offset! */
main(argc, argv)
int argc;
char *argv[];
{
FILE *in, *data;
char inputname[SLEN], hashname[SLEN], dataname[SLEN];
char home[SLEN], buffer[LONG_STRING];
int hash, count = 0, owner, quiet = 0;
if (argc != 1)
if (strcmp(argv[1], "-q") == 0)
quiet++;
else
exit(printf("Usage: %s\n", argv[0]));
owner = getuid();
if (owner == 0 && ! quiet) { /* being run by root! */
printf("Would you like to update the system aliases? (y/n)");
gets(buffer, 2);
if (buffer[0] == 'y' || buffer[0] == 'Y') {
printf("Updating the system alias file...\n");
sprintf(inputname, "%s/%s", mailhome, alias_text);
sprintf(hashname, "%s/%s", mailhome, alias_hash);
sprintf(dataname, "%s/%s", mailhome, alias_data);
system++;
init_table(shash_table, MAX_SALIASES);
}
else
printf("Updating your personal alias file...\n");
}
if (! system) {
if (strcpy(home, getenv("HOME")) == NULL)
exit(printf("Confused: No HOME variable in environment!\n"));
sprintf(inputname, "%s/%s", home, alias_text);
sprintf(hashname, "%s/%s", home, alias_hash);
sprintf(dataname, "%s/%s", home, alias_data);
init_table(uhash_table, MAX_UALIASES);
read_in_system(shash_table, sizeof shash_table);
}
if ((in = fopen(inputname,"r")) == NULL)
exit(printf("Couldn't open %s for input!\n", inputname));
if ((hash = open(hashname, O_WRONLY | O_CREAT, 0644)) == -1)
exit(printf("Couldn't open %s for output!\n", hashname));
if ((data = fopen(dataname,"w")) == NULL)
exit(printf("Couldn't open %s for output!\n", dataname));
buff_loaded = 0; /* file buffer empty right now! */
while (get_alias(in, buffer) != -1) {
if (system)
put_alias(data, buffer, shash_table, MAX_SALIASES);
else
put_alias(data, buffer, uhash_table, MAX_UALIASES);
count++;
}
if (error) {
printf("\n** Not saving tables! Please fix and re-run %s!\n",
argv[0]);
exit(1);
}
else {
if (system)
write(hash, shash_table, sizeof shash_table);
else
write(hash, uhash_table, sizeof uhash_table);
close(hash);
fclose(data);
close(in);
printf("Processed %d aliases\n", count);
exit(0);
}
}
int
get_alias(file, buffer)
FILE *file;
char *buffer;
{
/* load buffer with the next complete alias from the file.
(this can include reading in multiple lines and appending
them all together!) Returns EOF after last entry in file.
Lines that start with '#' are assumed to be comments and are
ignored. White space as the first field of a line is taken
to indicate that this line is a continuation of the previous. */
static char mybuffer[SLEN];
int done = 0, first_read = 1;
/** get the first line of the entry... **/
buffer[0] = '\0'; /* zero out line */
do {
if (get_line(file, mybuffer, first_read) == -1)
return(-1);
first_read = 0;
if (mybuffer[0] != '#')
strcpy(buffer, mybuffer);
} while (strlen(buffer) == 0);
/** now read in the rest (if there is any!) **/
do {
if (get_line(file, mybuffer, first_read) == -1) {
buff_loaded = 0; /* force a read next pass! */
return(0); /* okay. let's just hand 'buffer' back! */
}
done = (mybuffer[0] != ' ' && mybuffer[0] != TAB);
if (mybuffer[0] != '#' && ! done)
strcat(buffer, mybuffer);
done = (done && mybuffer[0] != '#');
} while (! done);
return(0); /* no sweat! */
}
put_alias(data, buffer, table, size)
FILE *data;
char *buffer;
struct alias_rec table[];
int size;
{
/** break buffer down into two pieces: aliases, and address,
throwing away the username (comment) field.
Make the appropriate entries in the table (size) **/
char aliases[LONG_STRING], address[LONG_STRING];
int i = 0, j = 0;
remove_all(' ', TAB, buffer);
for (i=0; buffer[i] != ':' && i < LONG_STRING; i++)
aliases[i] = buffer[i];
aliases[i] = '\0';
for (i=strlen(buffer)-1; buffer[i] != ':' && i > 0; i--)
address[j++] = buffer[i];
address[j] = '\0';
reverse(address);
add_to_table(data, aliases, address, table, size);
}
int
get_line(file, buffer, first_line)
FILE *file;
char *buffer;
int first_line;
{
/** read line from file. If first_line and buff_loaded,
then just return! **/
int stat;
if (first_line && buff_loaded) {
buff_loaded = 1;
return;
}
buff_loaded = 1; /* we're going to get SOMETHING in the buffer */
stat = fgets(buffer, SLEN, file) == NULL ? -1 : 0;
if (stat != -1)
no_ret(buffer);
return(stat);
}
reverse(string)
char *string;
{
/** reverse the order of the characters in string...
uses a bubble-sort type of algorithm! **/
register int f, l;
char c;
f = 0;
l = strlen(string) - 1;
while (f < l) {
c = string[f];
string[f] = string[l];
string[l] = c;
f++;
l--;
}
}
add_to_table(data, aliases, address, table, size)
FILE *data;
char *aliases, *address;
struct alias_rec table[];
int size;
{
/** add address to datafile, incrementing offset count (bytes),
then for each alias in the aliases string, add to the
hash table, with the associated pointer value! **/
static char buf[SLEN], *word;
long additive = 1L;
word = buf; /* use the allocated space! */
if (group(address)) {
check_group(address, aliases);
if (error) return; /* don't do work if we aren't to save it! */
fprintf(data, "!%s\n", address);
additive = 2L;
}
else {
if (error) return; /* don't do work if we aren't to save it! */
fprintf(data, "%s\n", address);
}
while ((word = (char *) strtok(aliases,", ")) != NULL) {
add_to_hash_table(word, offset, table, size);
aliases = NULL; /* let's get ALL entries via 'strtok' */
count++;
}
if ( system ? count > MAX_SALIASES-35 : count > MAX_UALIASES-21) {
printf("** Too many aliases in file! **\n");
error++;
}
offset = (offset + (long) strlen(address) + additive);
}
remove_all(c1, c2, string)
char c1, c2, *string;
{
/* remove all occurances of character 'c' from string. */
char buffer[LONG_STRING];
register int i = 0, j = 0;
for (i = 0; string[i] != '\0' && i < LONG_STRING; i++)
if (string[i] != c1 && string[i] != c2)
buffer[j++] = string[i];
buffer[j] = '\0';
strcpy(string, buffer);
}
add_to_hash_table(word, offset, table, size)
char *word;
long offset;
struct alias_rec table[];
int size;
{
/** add word and offset to current hash table. **/
register int loc;
if (strlen(word) > 20)
exit(printf("Bad alias name: %s. Too long.\n", word));
loc = hash_it(word, size);
while (table[loc].name[0] != '\0' && strcmp(table[loc].name, word) != 0)
loc = loc + 1 % size;
if (table[loc].name[0] == '\0') {
strcpy(table[loc].name, word);
table[loc].byte = offset;
}
else
printf("** Duplicate alias '%s' in file. Multiples ignored.\n",
word);
}
int
hash_it(string, table_size)
char *string;
{
/** compute the hash function of the string, returning
it (mod table_size) **/
register int i, sum = 0;
for (i=0; string[i] != '\0'; i++)
sum += (int) string[i];
return(sum % table_size);
}
init_table(table, size)
struct alias_rec table[];
int size;
{
/** initialize hash table! **/
register int i;
for (i=0; i < size; i++)
table[i].name[0] = '\0';
}
read_in_system(table, size)
struct alias_rec table[];
int size;
{
/** read in the system hash table...to check for group aliases
from the user alias file (to ensure that there are no names
in the user group files that are not purely contained within
either alias table) **/
int fd;
char fname[SLEN];
sprintf(fname, "%s/%s", mailhome, alias_hash);
if ((fd = open(fname, O_RDONLY)) == -1)
return; /* no sweat: flag 'hash_table_loaded' not set! */
(void) read(fd, table, size);
close(fd);
hash_table_loaded++;
}
check_group(names, groupname)
char *names, *groupname;
{
/** one by one make sure each name in the group is defined
in either the system alias file or the user alias file.
This search is linearly dependent, so all group aliases
in the source file should appear LAST, after all the user
aliases! **/
char *word, *bufptr, buffer[LONG_STRING];
strcpy(buffer, names);
bufptr = (char *) buffer;
while ((word = (char *) strtok(bufptr,", ")) != NULL) {
if (! can_find(word))
if (! valid_name(word)) {
error++;
printf("** Alias %s in group %s is bad!\n", word, groupname);
}
bufptr = NULL;
}
}
int
can_find(name)
char *name;
{
/** find name in either hash table...use 'system' variable to
determine if we should look in both or just system.... **/
register int loc;
if (strlen(name) > 20) {
error++;
printf("** Bad alias name: %s. Too long.\n", name);
return(1); /* fake out: don't want 2 error messages! */
}
/** system alias table... **/
if (hash_table_loaded || system) {
loc = hash_it(name, MAX_SALIASES);
while (strcmp(name, shash_table[loc].name) != 0 &&
shash_table[loc].name[0] != '\0')
loc = (loc + 1) % MAX_SALIASES;
if (strcmp(name, shash_table[loc].name) == 0)
return(1); /* found it! */
}
if (! system) { /* okay! Let's check the user alias file! */
loc = hash_it(name, MAX_UALIASES);
while (strcmp(name, uhash_table[loc].name) != 0 &&
uhash_table[loc].name[0] != '\0')
loc = (loc + 1) % MAX_UALIASES;
if (strcmp(name, uhash_table[loc].name) == 0)
return(1); /* found it! */
}
return(0);
}
END-OF-FILE
if [ "$filename" != "/dev/null" ]
then
size=`wc -c < $filename`
if [ $size != 11051 ]
then
echo $filename changed - should be 11051 bytes, not $size bytes
fi
chmod 666 $filename
fi
# ---------- file utils/printmail.c ----------
filename="utils/printmail.c"
if [ -f $filename ]
then
echo File \"$filename\" already exists\! Skipping...
filename=/dev/null # throw it away
else
echo extracting file utils/printmail.c...
fi
cat << 'END-OF-FILE' > $filename
/** printmail.c **/
/** print mail, adding a formfeed between each message **/
/** Modified to use stdin if being fed from a pipe. **/
/** (C) Copyright 1985, Dave Taylor **/
#include <stdio.h>
#include "defs.h"
static char ident[] = { WHAT_STRING };
#define dashes \
"\n\n------------------------------------------------------------------------------\n\n"
#define FF "\014" /* form feed! */
FILE *mailfile;
char separator[80];
main(argc, argv)
int argc;
char *argv[];
{
char infile[80], username[40], c;
strcpy(separator, FF);
*argv++; /* get past argv[0] */
if (argc > 1)
if (strcmp(*argv, "-d") == 0) {
strcpy(separator, dashes);
--argc;
*argv++;
}
if (argc > 1 && *argv[0] == '-')
exit(fprintf(stderr, "Usage: printmail {-d} {filename (s)}\n"));
if (argc == 1) {
strcpy(username, getlogin());
if (strlen(username) == 0)
cuserid(username);
if (isatty(fileno(stdin))) { /* normal invokation... */
sprintf(infile,"%s/%s",mailhome, username);
if ((mailfile = fopen(infile,"r")) == NULL) {
fprintf(stderr, "No mail!\n");
exit(0);
}
}
else
mailfile = stdin; /* read from stdin! */
if (read_headers() == 0)
fprintf(stderr, "No messages in mailbox!\n");
}
if (argc > 1) /* more than one file - delimit each */
if (strcmp(separator, FF) != 0)
printf("\t\t\t%s\n%s", *argv, separator);
else
printf("\t\t\t%s\n\n", *argv); /* Don't put a formfeed! */
while (--argc) {
if ((mailfile = fopen(*argv,"r")) == NULL) {
fprintf(stderr, "Could not open file '%s'!", *argv);
break;
}
else
if (read_headers() == 0)
fprintf(stderr, "No messages in mailbox '%s'!\n", *argv);
*argv++;
if (argc) {
if (strcmp(separator, FF) != 0)
printf("%s\t\t\t%s%s", separator, *argv, separator);
else
printf("%s\t\t\t%s\n\n", separator, *argv);
}
}
}
int
read_headers()
{
char buffer[100];
register int count = 0;
while (fgets(buffer, 100, mailfile) != NULL)
if (first_word(buffer,"From ")) {
if (real_from(buffer)) {
printf("%s%s", count ? separator : "", buffer);
count++;
}
}
else
printf("%s", buffer);
return(count);
}
int
real_from(buffer)
char *buffer;
{
/***** returns true iff 's' has the seven 'from' fields *****/
char junk[80];
junk[0] = '\0';
sscanf(buffer, "%*s %*s %*s %*s %*s %*s %s", junk);
return(junk[0] != '\0');
}
END-OF-FILE
if [ "$filename" != "/dev/null" ]
then
size=`wc -c < $filename`
if [ $size != 2472 ]
then
echo $filename changed - should be 2472 bytes, not $size bytes
fi
chmod 666 $filename
fi
echo end of this archive file....
exit 0