rsalz@uunet.uu.net (Rich Salz) (04/14/89)
Submitted-by: dsinc!syd@uunet.UU.NET (Syd Weinstein)
Posting-number: Volume 18, Issue 103
Archive-name: elm2.2/part24
#!/bin/sh
# this is part 24 of a multipart archive
# do not concatenate these parts, unpack them in order with /bin/sh
# file utils/newalias.c continued
#
CurArch=24
if test ! -r s2_seq_.tmp
then echo "Please unpack part 1 first!"
exit 1; fi
( read Scheck
if test "$Scheck" != $CurArch
then echo "Please unpack part $Scheck next!"
exit 1;
else exit 0; fi
) < s2_seq_.tmp || exit 1
echo "x - Continuing file utils/newalias.c"
sed 's/^X//' << 'SHAR_EOF' >> utils/newalias.c
X exit(1);
X }
X
X loc = hash_it(word, size);
X
X while (table[loc].name[0] != '\0' && strcmp(table[loc].name, word) != 0)
X loc = (loc + 1) % size;
X
X if (table[loc].name[0] == '\0') {
X strcpy(table[loc].name, word);
X table[loc].byte = offset;
X }
X else
X printf("** Duplicate alias '%s' in file. Multiples ignored.\n",
X word);
X}
X
Xint
Xhash_it(string, table_size)
Xchar *string;
X{
X /** compute the hash function of the string, returning
X it (mod table_size) **/
X
X register int i, sum = 0;
X
X for (i=0; string[i] != '\0'; i++)
X sum += (int) string[i];
X
X return(sum % table_size);
X}
X
Xinit_table(table, size)
Xstruct alias_rec table[];
Xint size;
X{
X /** initialize hash table! **/
X
X register int i;
X
X for (i=0; i < size; i++)
X table[i].name[0] = '\0';
X}
X
Xread_in_system(table, size)
Xstruct alias_rec table[];
Xint size;
X{
X /** read in the system hash table...to check for group aliases
X from the user alias file (to ensure that there are no names
X in the user group files that are not purely contained within
X either alias table) **/
X
X int fd;
X char fname[SLEN];
X
X sprintf(fname, "%s/%s", mailhome, ALIAS_HASH);
X
X if ((fd = open(fname, O_RDONLY)) == -1)
X return; /* no sweat: flag 'hash_table_loaded' not set! */
X
X (void) read(fd, table, size);
X close(fd);
X hash_table_loaded++;
X}
X
Xcheck_group(names, groupname)
Xchar *names, *groupname;
X{
X /** one by one make sure each name in the group is defined
X in either the system alias file or the user alias file.
X This search is linearly dependent, so all group aliases
X in the source file should appear LAST, after all the user
X aliases! **/
X
X char *word, *bufptr, buffer[LONG_STRING];
X
X strcpy(buffer, names);
X bufptr = (char *) buffer;
X
X while ((word = (char *) strtok(bufptr,", ")) != NULL) {
X if (! can_find(word))
X if (! valid_name(word)) {
X error++;
X printf("** Alias %s in group %s is bad!\n", word, groupname);
X }
X bufptr = NULL;
X }
X}
X
Xint
Xcan_find(name)
Xchar *name;
X{
X /** find name in either hash table...use 'is_system' variable to
X determine if we should look in both or just system.... **/
X
X register int loc;
X
X if (strlen(name) > 20) {
X error++;
X printf("** Bad alias name: %s. Too long.\n", name);
X return(1); /* fake out: don't want 2 error messages! */
X }
X
X /** system alias table... **/
X if (hash_table_loaded || is_system) {
X loc = hash_it(name, MAX_SALIASES);
X
X while (strcmp(name, shash_table[loc].name) != 0 &&
X shash_table[loc].name[0] != '\0')
X loc = (loc + 1) % MAX_SALIASES;
X
X if (strcmp(name, shash_table[loc].name) == 0)
X return(1); /* found it! */
X }
X
X if (! is_system) { /* okay! Let's check the user alias file! */
X loc = hash_it(name, MAX_UALIASES);
X
X while (strcmp(name, uhash_table[loc].name) != 0 &&
X uhash_table[loc].name[0] != '\0')
X loc = (loc + 1) % MAX_UALIASES;
X
X if (strcmp(name, uhash_table[loc].name) == 0)
X return(1); /* found it! */
X }
X
X return(0);
X}
X
Xextract_comment(comment, buffer, first, last)
Xchar *comment, *buffer;
Xint first, last;
X{
X /** Buffer contains a comment, located between the first and last
X values. Copy that into 'comment', but remove leading and
X trailing white space. Note also that it doesn't copy past
X a comma, so `unpublishable' comments can be of the form;
X dave: Dave Taylor, HP Labs : taylor@hplabs
X and the output will be "taylor@hplabs (Dave Taylor)".
X **/
X
X register int loc = 0;
X
X /** first off, skip the LEADING white space... **/
X
X while (whitespace(buffer[first])) first++;
X
X /** now let's backup the 'last' value until we hit a non-whitespace **/
X
X last -= 2; /* starts at ch AFTER equals.. */
X while (whitespace(buffer[last])) last--;
X
X /** now a final check to make sure we're still talking about a
X reasonable string (rather than a "joe :: joe@dec" type string) **/
X
X if (first < last) {
X /* one more check - let's find the comma, if present... */
X for (loc=first; loc < last; loc++)
X if (buffer[loc] == ',') {
X last = loc-1;
X break;
X }
X loc = 0;
X while (first <= last)
X comment[loc++] = buffer[first++];
X comment[loc] = '\0';
X }
X}
X
Xupdate_alias_file_locations()
X{
X /** a short-term routine to ensure that the data files are
X moved into the correct directory... **/
X
X char source[SLEN], dest[SLEN];
X
X /** first let's create the directory if it ain't there... **/
X
X sprintf(source, "%s/.elm", home);
X
X /** Some systems don't have a mkdir call - how inconvienient! **/
X#ifdef MKDIR
X (void) mkdir(source, 0700);
X#else
X system("mkdir $HOME/.elm");
X system("chmod 700 $HOME/.elm");
X#endif /* MKDIR */
X
X /** now *link* the files... **/
X
X sprintf(source, "%s/.alias_text", home);
X sprintf(dest, "%s/%s", home, ALIAS_TEXT);
X link(source, dest);
X
X sprintf(source, "%s/.alias_hash", home);
X sprintf(dest, "%s/%s", home, ALIAS_HASH);
X link(source, dest);
X
X sprintf(source, "%s/.alias_data", home);
X sprintf(dest, "%s/%s", home, ALIAS_DATA);
X link(source, dest);
X
X printf("\n*** Moved all data files into %s/.elm directory ***\n\n",
X home);
X}
SHAR_EOF
echo "File utils/newalias.c is complete"
chmod 0444 utils/newalias.c || echo "restore of utils/newalias.c fails"
echo "x - extracting utils/newmail.c (Text)"
sed 's/^X//' << 'SHAR_EOF' > utils/newmail.c &&
X
Xstatic char rcsid[] = "@(#)$Id: newmail.c,v 2.16 89/03/25 21:47:55 syd Exp $";
X
X/*******************************************************************************
X * The Elm Mail System - $Revision: 2.16 $ $State: Exp $
X *
X * Copyright (c) 1986, 1987 Dave Taylor
X * Copyright (c) 1988, 1989 USENET Community Trust
X *******************************************************************************
X * Bug reports, patches, comments, suggestions should be sent to:
X *
X * Syd Weinstein, Elm Coordinator
X * elm@dsinc.UUCP dsinc!elm
X *
X *******************************************************************************
X * $Log: newmail.c,v $
X * Revision 2.16 89/03/25 21:47:55 syd
X * Initial 2.2 Release checkin
X *
X *
X ******************************************************************************/
X
X/** This is actually two programs folded into one - 'newmail()' and
X 'wnewmail()'. They perform essentially the same function, to
X monitor the mail arriving in a set of/a mailbox or folder, but
X newmail is designed to run in background on a terminal, and
X wnewmail is designed to have a window of its own to run in.
X
X The main difference is that wnewmail checks for mail more often.
X
X The usage parameters are:
X
X -i <interval> how often to check for mail
X (default: 60 secs if newmail,
X 10 secs if wnewmail)
X
X <filename> name of a folder to monitor
X (can prefix with '+'/'=', or can
X default to the incoming mailbox)
X
X <filename>=prefix file to monitor, output with specified
X prefix when mail arrives.
X
X If we're monitoring more than one mailbox the program will prefix
X each line output (if 'newmail') or each cluster of mail (if 'wnewmail')
X with the basename of the folder the mail has arrived in. In the
X interest of exhaustive functionality, you can also use the "=prefix"
X suffix (eh?) to specify your own strings to prefix messages with.
X
X The output format is either:
X
X newmail:
X >> New mail from <user> - <subject>
X >> Priority mail from <user> - <subject>
X
X >> <folder>: from <user> - <subject>
X >> <folder>: Priority from <user> - <subject>
X
X wnewmail:
X <user> - <subject>
X Priority: <user> - <subject>
X
X <folder>: <user> - <subject>
X <folder>: Priority: <user> - <subject>\fR
X
X**/
X
X#include <stdio.h>
X#include <errno.h>
X#include <sys/types.h>
X#include <sys/stat.h>
X
X#include "defs.h"
X
X#include <signal.h> /* background jobs ignore some signals... */
X
Xstatic char ident[] = { WHAT_STRING };
X
X#define LINEFEED (char) 10
X#define BEGINNING 0 /* seek fseek(3S) */
X#define DEFAULT_INTERVAL 60
X
X#define MAX_FOLDERS 25 /* max we can keep track of */
X
X#define NO_SUBJECT "(No Subject Specified)"
X
X#define metachar(c) (c == '+' || c == '=' || c == '%')
X
Xchar *getusername();
Xlong bytes();
X
Xstruct folder_struct {
X char foldername[SLEN];
X char prefix[NLEN];
X FILE *fd;
X long filesize;
X } folders[MAX_FOLDERS];
X
Xint interval_time, /* how long to sleep between checks */
X debug = 0, /* include verbose debug output? */
X in_window = 0, /* are we running as 'wnewmail'? */
X total_folders = 0, /* # of folders we're monitoring */
X current_folder = 0; /* struct pointer for looping */
X
Xchar hostname[SLEN], /* name of machine we're on */
X hostdomain[SLEN]; /* name of domain we're in */
X
X#ifdef BSD
Xextern int errno;
X#endif
X
Xmain(argc, argv)
Xint argc;
Xchar *argv[];
X{
X extern char *optarg;
X extern int optind, opterr;
X char *ptr;
X int c, i, done;
X long lastsize,
X newsize; /* file size for comparison.. */
X
X#ifdef HOSTCOMPILED
X strncpy(hostname, HOSTNAME, sizeof(hostname));
X#else
X gethostname(hostname, sizeof(hostname));
X#endif
X gethostdomain(hostdomain, sizeof(hostdomain));
X
X interval_time = DEFAULT_INTERVAL;
X opterr = 0;
X
X /** let's see if the first character of the basename of the
X command invoked is a 'w' (e.g. have we been called as
X 'wnewmail' rather than just 'newmail'?)
X **/
X
X for (i=0, ptr=(argv[0] + strlen(argv[0])-1); !i && ptr > argv[0]; ptr--)
X if (*ptr == '/') {
X in_window = (*(ptr+1) == 'w');
X i++;
X }
X
X if (ptr == argv[0] && i == 0 && argv[0][0] == 'w')
X in_window = 1;
X
X while ((c = getopt(argc, argv, "di:w")) != EOF) {
X switch (c) {
X case 'd' : debug++; break;
X case 'i' : interval_time = atoi(optarg); break;
X case 'w' : in_window = 1; break;
X default : usage(); exit(1);
X }
X }
X
X if (interval_time < 10)
X fprintf(stderr,
X"Warning: interval set to %d second%s. I hope you know what you're doing!\n",
X interval_time, interval_time == 1 ? "" : "s");
X
X /* now let's parse the foldernames, if any are given */
X
X if (optind >= argc) /* get default */
X add_default_folder();
X else {
X while (optind < argc)
X add_folder(argv[optind++]);
X pad_prefixes(); /* for nice output...*/
X }
X
X#ifdef AUTO_BACKGROUND
X if (! in_window) {
X if (fork()) /* automatically puts this task in background! */
X exit(0);
X
X (void) signal(SIGINT, SIG_IGN);
X (void) signal(SIGQUIT, SIG_IGN);
X }
X#endif
X (void) signal(SIGHUP, SIG_DFL);
X
X if (in_window && ! debug)
X printf("Incoming mail:\n");
X
X while (1) {
X
X#ifndef AUTO_BACKGROUND /* won't work if we're nested this deep! */
X if (getppid() == 1) /* we've lost our shell! */
X exit();
X#endif
X if (! isatty(1)) /* we're not sending output to a tty any more */
X exit();
X
X if (debug) printf("\n----\n");
X
X for (i = 0; i < total_folders; i++) {
X
X if (debug)
X printf("[checking folder #%d: %s]\n", i, folders[i].foldername);
X
X if (folders[i].fd == (FILE *) NULL) {
X
X if ((folders[i].fd = fopen(folders[i].foldername,"r")) == NULL)
X if (errno == EACCES) {
X fprintf(stderr, "\nPermission to monitor %s denied!\n\n",
X folders[i].foldername);
X sleep(5);
X exit(1);
X }
X }
X
X if ((newsize = bytes(folders[i].foldername)) >
X folders[i].filesize) { /* new mail has arrived! */
X
X if (debug)
X printf(
X "\tnew mail has arrived! old size = %ld, new size=%ld\n",
X folders[i].filesize, newsize);
X
X /* skip what we've read already... */
X
X if (fseek(folders[i].fd, folders[i].filesize,
X BEGINNING) != 0)
X perror("fseek()");
X
X folders[i].filesize = newsize;
X
X if (in_window)
X putchar((char) 007); /* BEEP!*/
X else
X printf("\n\r"); /* blank lines surrounding message */
X
X read_headers(i); /* read and display new mail! */
X
X if (! in_window)
X printf("\n\r");
X }
X else if (newsize != folders[i].filesize) { /* file SHRUNK! */
X
X folders[i].filesize = bytes(folders[i].foldername);
X (void) fclose(folders[i].fd); /* close it and ... */
X folders[i].fd = (FILE *) NULL; /* let's reopen the file */
X
X lastsize = folders[i].filesize;
X done = 0;
X
X while (! done) {
X sleep(0); /* basically gives up our CPU slice */
X newsize = bytes(folders[i].foldername);
X if (newsize != lastsize)
X lastsize = newsize;
X else
X done++;
X }
X
X folders[i].filesize = newsize;
X }
X }
X
X sleep(interval_time);
X }
X}
X
Xint
Xread_headers(current_folder)
Xint current_folder;
X{
X /** read the headers, output as found given current_folder,
X the prefix of that folder, and whether we're in a window
X or not.
X **/
X
X char buffer[SLEN], from_whom[SLEN], subject[SLEN];
X register int subj = 0, in_header = 1, count = 0, priority=0;
X
X while (fgets(buffer, SLEN, folders[current_folder].fd) != NULL) {
X if (first_word(buffer,"From ")) {
X if (real_from(buffer, from_whom)) {
X subj = 0;
X priority = 0;
X in_header = 1;
X subject[0] ='\0';
X from_whom[0] ='\0';
X }
X }
X else if (in_header) {
X if (first_word(buffer,">From"))
X forwarded(buffer, from_whom); /* return address */
X else if (first_word(buffer,"Subject:") ||
X first_word(buffer,"Re:")) {
X if (! subj++) {
X remove_first_word(buffer);
X strcpy(subject, buffer);
X }
X }
X else if (first_word(buffer,"Priority:"))
X priority++;
X else if (first_word(buffer,"From:"))
X parse_arpa_from(buffer, from_whom);
X else if (buffer[0] == LINEFEED) {
X in_header = 0; /* in body of message! */
X show_header(priority, from_whom, subject, current_folder);
X count++;
X }
X }
X }
X return(count);
X}
X
Xadd_folder(name)
Xchar *name;
X{
X /* add the specified folder to the list of folders...ignore any
X problems we may having finding it (user could be monitoring
X a mailbox that doesn't currently exist, for example)
X */
X
X char *cp, buf[SLEN];
X
X if (current_folder > MAX_FOLDERS) {
X fprintf(stderr,
X "Sorry, but I can only keep track of %d folders.\n", MAX_FOLDERS);
X exit(1);
X }
X
X /* now let's rip off the suffix "=<string>" if it's there... */
X
X for (cp = name + strlen(name); cp > name+1 && *cp != '=' ; cp--)
X /* just keep stepping backwards */ ;
X
X /* if *cp isn't pointing to the first character we'e got something! */
X
X if (cp > name+1) {
X
X *cp++ = '\0'; /* null terminate the filename & get prefix */
X
X if (metachar(*cp)) cp++;
X
X strcpy(folders[current_folder].prefix, cp);
X }
X else { /* nope, let's get the basename of the file */
X for (cp = name + strlen(name); cp > name && *cp != '/'; cp--)
X /* backing up a bit... */ ;
X
X if (metachar(*cp)) cp++;
X if (*cp == '/') cp++;
X
X strcpy(folders[current_folder].prefix, cp);
X }
X
X /* and next let's see what kind of weird prefix chars this user
X might be testing us with. We can have '+'|'='|'%' to expand
X or a file located in the incoming mail dir...
X */
X
X if (metachar(name[0]))
X expand_filename(name, folders[current_folder].foldername);
X else if (access(name, 00) == -1) {
X /* let's try it in the mail home directory */
X sprintf(buf, "%s%s", mailhome, name);
X if (access(buf, 00) != -1) /* aha! */
X strcpy(folders[current_folder].foldername, buf);
X else
X strcpy(folders[current_folder].foldername, name);
X }
X else
X strcpy(folders[current_folder].foldername, name);
X
X /* now let's try to actually open the file descriptor and grab
X a size... */
X
X if ((folders[current_folder].fd =
X fopen(folders[current_folder].foldername, "r")) == NULL)
X if (errno == EACCES) {
X fprintf(stderr, "\nPermission to monitor \"%s\" denied!\n\n",
X folders[current_folder].foldername);
X exit(1);
X }
X
X folders[current_folder].filesize =
X bytes(folders[current_folder].foldername);
X
X /* and finally let's output what we did */
X
X if (debug)
X printf("folder %d: \"%s\" <%s> %s, size = %ld\n",
X current_folder,
X folders[current_folder].foldername,
X folders[current_folder].prefix,
X folders[current_folder].fd == NULL? "not found" : "opened",
X folders[current_folder].filesize);
X
X /* and increment current-folder please! */
X
X current_folder++;
X total_folders++;
X}
X
Xadd_default_folder()
X{
X char *cp;
X
X /* this routine will add the users home mailbox as the folder
X * to monitor. Since there'll only be one folder we'll never
X * prefix it either...
X * determine mail file from environment variable if found,
X * else use password entry
X */
X if ((cp = getenv("MAIL")) == NULL)
X sprintf(folders[0].foldername, "%s%s", mailhome, getusername());
X else
X strcpy(folders[0].foldername, cp);
X
X folders[0].fd = fopen(folders[0].foldername, "r");
X folders[0].filesize = bytes(folders[0].foldername);
X
X if (debug)
X printf("default folder: \"%s\" <%s> %s, size = %ld\n",
X folders[0].foldername,
X folders[0].prefix,
X folders[0].fd == NULL? "not found" : "opened",
X folders[0].filesize);
X
X total_folders = 1;
X}
X
Xint
Xreal_from(buffer, who)
Xchar *buffer, *who;
X{
X /***** returns true iff 's' has the seven 'from' fields,
X initializing the who to the sender *****/
X
X char junk[SLEN];
X
X junk[0] = '\0';
X sscanf(buffer, "%*s %s %*s %*s %*s %*s %s",
X who, junk);
X return(junk[0] != '\0');
X}
X
Xforwarded(buffer, who)
Xchar *buffer, *who;
X{
X /** change 'from' and date fields to reflect the ORIGINATOR of
X the message by iteratively parsing the >From fields... **/
X
X char machine[SLEN], buff[SLEN];
X
X machine[0] = '\0';
X sscanf(buffer, "%*s %s %*s %*s %*s %*s %*s %*s %*s %*s %s",
X who, machine);
X
X if(machine[0] == '\0') /* try for address with timezone in date */
X sscanf(buffer, "%*s %s %*s %*s %*s %*s %*s %*s %*s %s",
X who, machine);
X
X if (machine[0] == '\0') /* try for srm address */
X sscanf(buffer, "%*s %s %*s %*s %*s %*s %*s %*s %s",
X who, machine);
X
X if (machine[0] == '\0')
X sprintf(buff,"anonymous");
X else
X sprintf(buff,"%s!%s", machine, who);
X
X strncpy(who, buff, SLEN);
X}
X
X
Xremove_first_word(string)
Xchar *string;
X{ /** removes first word of string, ie up to first non-white space
X following a white space! **/
X
X register int loc;
X
X for (loc = 0; string[loc] != ' ' && string[loc] != '\0'; loc++)
X ;
X
X while (string[loc] == ' ' || string[loc] == '\t')
X loc++;
X
X move_left(string, loc);
X}
X
Xmove_left(string, chars)
Xchar string[];
Xint chars;
X{
X /** moves string chars characters to the left DESTRUCTIVELY **/
X
X register int i;
X
X chars--; /* index starting at zero! */
X
X for (i=chars; string[i] != '\0' && string[i] != '\n'; i++)
X string[i-chars] = string[i];
X
X string[i-chars] = '\0';
X}
X
Xshow_header(priority, from, subject, current_folder)
Xint priority;
Xchar *from, *subject;
Xint current_folder;
X{
X /** output header in clean format, including abbreviation
X of return address if more than one machine name is
X contained within it! **/
X char buffer[SLEN];
X int loc, i=0, exc=0;
X
X#ifndef INTERNET
X /* Remove bogus "@host.domain" string. */
X
X sprintf(buffer, "@%s%s", hostname, hostdomain);
X
X if (chloc(from, '!') != -1 && in_string(from, buffer))
X from[strlen(from) - strlen(buffer)] = '\0';
X#endif
X
X loc = strlen(from);
X
X while (exc < 2 && loc > 0)
X if (from[--loc] == '!')
X exc++;
X
X if (exc == 2) { /* lots of machine names! Get last one */
X loc++;
X while (loc < strlen(from) && loc < SLEN)
X buffer[i++] = from[loc++];
X buffer[i] = '\0';
X strcpy(from, buffer);
X }
X
X if (strlen(subject) < 2)
X strcpy(subject, NO_SUBJECT);
X
X if (in_window)
X if (total_folders > 1)
X printf("%s: %s%s -- %s\n",
X folders[current_folder].prefix,
X priority? "Priority " : "", from, subject);
X else
X printf("%s%s -- %s\n",
X priority? "Priority " : "", from, subject);
X else
X if (total_folders > 1)
X printf(">> %s: %sail from %s - %s\n\r",
X folders[current_folder].prefix,
X priority? "Priority m" : "M", from, subject);
X else
X printf(">> %sail from %s - %s\n\r",
X priority? "Priority m" : "M", from, subject);
X}
X
Xparse_arpa_from(buffer, newfrom)
Xchar *buffer, *newfrom;
X{
X /** try to parse the 'From:' line given... It can be in one of
X two formats:
X From: Dave Taylor <hpcnou!dat>
X or From: hpcnou!dat (Dave Taylor)
X Change 'newfrom' ONLY if sucessfully parsed this entry and
X the resulting name is non-null!
X **/
X
X char temp_buffer[SLEN], *temp;
X register int i, j = 0, in_parens;
X
X temp = (char *) temp_buffer;
X temp[0] = '\0';
X
X no_ret(buffer); /* blow away '\n' char! */
X
X if (lastch(buffer) == '>') {
X for (i=strlen("From: "); buffer[i] != '\0' && buffer[i] != '<' &&
X buffer[i] != '('; i++)
X temp[j++] = buffer[i];
X temp[j] = '\0';
X }
X else if (lastch(buffer) == ')') {
X in_parens = 1;
X for (i=strlen(buffer)-2; buffer[i] != '\0' && buffer[i] != '<'; i--) {
X switch(buffer[i]) {
X case ')': in_parens++;
X break;
X case '(': in_parens--;
X break;
X }
X if(!in_parens) break;
X temp[j++] = buffer[i];
X }
X temp[j] = '\0';
X reverse(temp);
X }
X
X if (strlen(temp) > 0) { /* mess with buffer... */
X
X /* remove leading spaces... */
X
X while (whitespace(temp[0]))
X temp = (char *) (temp + 1); /* increment address! */
X
X /* remove trailing spaces... */
X
X i = strlen(temp) - 1;
X
X while (whitespace(temp[i]))
X temp[i--] = '\0';
X
X /* if anything is left, let's change 'from' value! */
X
X if (strlen(temp) > 0)
X strcpy(newfrom, temp);
X }
X}
X
Xreverse(string)
Xchar *string;
X{
X /** reverse string... pretty trivial routine, actually! **/
X
X char buffer[SLEN];
X register int i, j = 0;
X
X for (i = strlen(string)-1; i >= 0; i--)
X buffer[j++] = string[i];
X
X buffer[j] = '\0';
X
X strcpy(string, buffer);
X}
X
Xlong
Xbytes(name)
Xchar *name;
X{
X /** return the number of bytes in the specified file. This
X is to check to see if new mail has arrived.... **/
X
X int ok = 1;
X extern int errno; /* system error number! */
X struct stat buffer;
X
X if (stat(name, &buffer) != 0)
X if (errno != 2) {
X fprintf(stderr,"Error %d attempting fstat on %s", errno, name);
X exit(1);
X }
X else
X ok = 0;
X
X return(ok ? buffer.st_size : 0);
X}
X
Xchar *getusername()
X{
X /** Getting the username on some systems is a real pain, so...
X This routine is guaranteed to return a usable username **/
X
X char *return_value, *getlogin(), *cuserid();
X
X if ((return_value = getlogin()) == NULL)
X if ((return_value = cuserid(NULL)) == NULL) {
X printf("Newmail: I can't get username!\n");
X exit(1);
X }
X
X return( (char *) return_value);
X}
X
Xusage()
X{
X /* print a nice friendly usage message */
X
X fprintf(stderr,
X"\nUsage: %s [-d] [-i interval] [-w] {folders}\n");
X fprintf(stderr, "\nWhere:\n");
X fprintf(stderr, " -d\tturns on debugging output\n");
X fprintf(stderr,
X" -i D\tsets the interval checking time to 'D' seconds\n");
X fprintf(stderr,
X" -w\tforces 'window'-style output, and bypasses auto-background\n\n");
X fprintf(stderr,
X"folders can be specified by relative or absolute path names, can be the name\n");
X fprintf(stderr,
X"of a mailbox in the incoming mail directory to check, or can have one of the\n");
X fprintf(stderr,
X"standard Elm mail directory prefix chars (e.g. '+', '=' or '%').\n");
X fprintf(stderr,
X"Furthermore, any folder can have '=string' as a suffix to indicate a folder\n");
X fprintf(stderr,
X"identifier other than the basename of the file\n\n");
X}
X
X
Xexpand_filename(name, store_space)
Xchar *name, *store_space;
X{
X strcpy(store_space, name);
X if (expand(store_space) == 0) {
X fprintf(stderr,"Sorry, but I couldn't expand \"%s\"\n",name);
X exit(1);
X }
X}
X
Xpad_prefixes()
X{
X /** This simple routine is to ensure that we have a nice
X output format. What it does is whip through the different
X prefix strings we've been given, figures out the maximum
X length, then space pads the other prefixes to match.
X **/
X
X register int i, j, len = 0;
X
X for (i=0; i < total_folders; i++)
X if (len < (j=strlen(folders[i].prefix)))
X len = j;
X
X for (i=0; i < total_folders; i++)
X for (j = strlen(folders[i].prefix); j < len; j++)
X strcat(folders[i].prefix, " ");
X}
SHAR_EOF
chmod 0444 utils/newmail.c || echo "restore of utils/newmail.c fails"
echo "x - extracting utils/printmail (Text)"
sed 's/^X//' << 'SHAR_EOF' > utils/printmail &&
X: Use /bin/sh
X# printmail: part of the Elm mail system
X# @(#)$Id: printmail,v 2.1 89/03/03 17:46:47 syd Exp $
X
Xif [ "$1" = "-p" ]; then
X flags="-p";shift
Xfi
X
Xif [ "$1" != "" ]; then
X if [ ! -r $1 ]; then
X echo printmail: cannot open folder $1 1>&2
X exit 1
X else
X flags="$flags -f $1"
X fi
Xfi
X
X# and now invoke readmsg
Xexec readmsg $flags \*
SHAR_EOF
chmod 0444 utils/printmail || echo "restore of utils/printmail fails"
echo "x - extracting utils/readmsg.c (Text)"
sed 's/^X//' << 'SHAR_EOF' > utils/readmsg.c &&
X
Xstatic char rcsid[] = "@(#)$Id: readmsg.c,v 2.7 89/03/25 21:47:57 syd Exp $";
X
X/*******************************************************************************
X * The Elm Mail System - $Revision: 2.7 $ $State: Exp $
X *
X * Copyright (c) 1986, 1987 Dave Taylor
X * Copyright (c) 1988, 1989 USENET Community Trust
X *******************************************************************************
X * Bug reports, patches, comments, suggestions should be sent to:
X *
X * Syd Weinstein, Elm Coordinator
X * elm@dsinc.UUCP dsinc!elm
X *
X *******************************************************************************
X * $Log: readmsg.c,v $
X * Revision 2.7 89/03/25 21:47:57 syd
X * Initial 2.2 Release checkin
X *
X *
X ******************************************************************************/
X
X/** This routine adds the functionality of the "~r" command to the Elm mail
X system while still allowing the user to use the editor of their choice.
X
X The program, without any arguments, tries to read a file in the users home
X directory called ".readmsg" (actually defined in the sysdefs.h system
X defines file) and if it finds it reads the current message. If it doesn't
X find it, it will return a usage error.
X
X The program can also be called with an explicit message number, list of
X message numbers, or a string to match in the message (including the header).
X NOTE that when you use the string matching option it will match the first
X message containing that EXACT (case sensitive) string and then exit.
X**/
X
X#include <stdio.h>
X#include <ctype.h>
X
X#include "defs.h"
X
X/** three defines for what level of headers to display **/
X
X#define ALL 1
X#define WEED 2
X#define NONE 3
X
X#define metachar(c) (c == '=' || c == '+' || c == '%')
X
Xstatic char ident[] = { WHAT_STRING };
X
X#define MAX_LIST 25 /* largest single list of arguments */
X
X#define LAST_MESSAGE 9999 /* last message in list ('$' char) */
X#define LAST_CHAR '$' /* char to delimit last message.. */
X#define STAR '*' /* char to delimit all messages... */
X
Xint read_message[MAX_LIST]; /* list of messages to read */
Xint messages = 0; /* index into list of messages */
X
Xint numcmp(); /* strcmp, but for numbers */
Xchar *words(), /* function defined below... */
X *expand_define(); /* ditto... */
X
X
Xextern char *optarg; /* for parsing the ... */
Xextern int optind; /* .. starting arguments */
X
Xchar *getenv(); /* keep lint happy */
X
Xmain(argc, argv)
Xint argc;
Xchar *argv[];
X{
X FILE *file; /* generic file descriptor! */
X char filename[SLEN], /* filename buffer */
X infile[SLEN], /* input filename */
X buffer[SLEN], /* file reading buffer */
X string[SLEN], /* string match buffer */
X *cp;
X
X int current_in_queue = 0, /* these are used for... */
X current = 0, /* ...going through msgs */
X list_all_messages = 0, /* just list 'em all?? */
X num, /* for argument parsing */
X page_breaks = 0, /* use "^L" breaks?? */
X total, /* number of msgs current */
X include_headers = WEED, /* flag: include msg header? */
X last_message = 0, /* flag: read last message? */
X not_in_header = 0, /* flag: in msg header? */
X string_match = 0; /* flag: using string match? */
X
X /**** start of the actual program ****/
X
X while ((num = getopt(argc, argv, "nhf:p")) != EOF) {
X switch (num) {
X case 'n' : include_headers = NONE; break;
X case 'h' : include_headers = ALL; break;
X case 'f' : strcpy(infile, optarg);
X if (metachar(infile[0]))
X if (expand(infile) == 0)
X printf("%s: couldn't expand filename %s!\n",
X argv[0], infile);
X break;
X case 'p' : page_breaks++; break;
X case '?' : printf(
X "Usage: %s [-n|-h] [-f filename] [-p] <message list>\n",
X argv[0]);
X exit(1);
X }
X }
X
X /** whip past the starting arguments so that we're pointing
X to the right stuff... **/
X
X *argv++; /* past the program name... */
X
X while (optind-- > 1) {
X *argv++;
X argc--;
X }
X
X /** now let's figure out the parameters to the program... **/
X
X if (argc == 1) { /* no arguments... called from 'Elm'? */
X sprintf(filename, "%s/%s", getenv("HOME"), readmsg_file);
X if ((file = fopen(filename, "r")) != NULL) {
X fscanf(file, "%d", &(read_message[messages++]));
X fclose(file);
X }
X else { /* no arguments AND no .readmsg file!! */
X fprintf(stderr,
X "Usage: readmsg [-n|-h] [-f filename] [-p] <message list>\n");
X exit(1);
X }
X }
X else if (! isdigit(*argv[0]) && *argv[0] != LAST_CHAR &&
X *argv[0] != STAR) {
X string_match++;
X
X while (*argv)
X sprintf(string, "%s%s%s", string, string[0] == '\0'? "" : " ",
X *argv++);
X }
X else if (*argv[0] == STAR) /* all messages.... */
X list_all_messages++;
X else { /* list of nums */
X
X while (--argc > 0) {
X num = -1;
X
X sscanf(*argv,"%d", &num);
X
X if (num < 0) {
X if (*argv[0] == LAST_CHAR) {
X last_message++;
X num = LAST_MESSAGE;
X }
X else {
X fprintf(stderr,"I don't understand what '%s' means...\n",
X *argv);
X exit(1);
X }
X }
X else if (num == 0) { /* another way to say "last" */
X last_message++;
X num = LAST_MESSAGE;
X }
X
X *argv++;
X
X read_message[messages++] = num;
X }
X
X /** and now sort 'em to ensure they're in a reasonable order... **/
X
X qsort(read_message, messages, sizeof(int), numcmp);
X }
X
X /** Now let's get to the mail file... **/
X
X if (strlen(infile) == 0) {
X if ((cp = getenv("MAIL")) == NULL)
X sprintf(infile, "%s/%s", mailhome, getenv("LOGNAME"));
X else
X strcpy(infile, cp);
X }
X
X if ((file = fopen(infile, "r")) == NULL) {
X printf("But you have no mail! [ file = %d ]\n", infile);
X exit(0);
X }
X
X /** Now it's open, let's display some 'ole messages!! **/
X
X if (string_match || last_message) { /* pass through it once */
X
X if (last_message) {
X total = count_messages(file); /* instantiate count */
X for (num=0; num < messages; num++)
X if (read_message[num] == LAST_MESSAGE)
X read_message[num] = total;
X }
X else if (string_match)
X match_string(file, string); /* stick msg# in list */
X
X if (total == 0 && ! string_match) {
X printf("There aren't any messages to read!\n");
X exit(0);
X }
X }
X
X /** now let's have some fun! **/
X
X while (fgets(buffer, SLEN, file) != NULL) {
X if (real_from(buffer)) {
X if (! list_all_messages) {
X if (current == read_message[current_in_queue])
X current_in_queue++;
X if (current_in_queue >= messages)
X exit(0);
X }
X current++;
X not_in_header = 0; /* we're in the header! */
X }
X if (current == read_message[current_in_queue] || list_all_messages)
X if (include_headers==ALL || not_in_header)
X printf("%s", buffer);
X else if (strlen(buffer) < 2) {
X not_in_header++;
X if (include_headers==WEED)
X list_saved_headers(page_breaks);
X }
X else if (include_headers==WEED)
X possibly_save(buffer); /* check to see if we want this */
X }
X
X exit(0);
X}
X
Xint
Xcount_messages(file)
XFILE *file;
X{
X /** Returns the number of messages in the file **/
X
X char buffer[SLEN];
X int count = 0;
X
X while (fgets(buffer, SLEN, file) != NULL)
X if (strncmp(buffer, "From ", 5) == 0)
X count++;
X
X rewind( file );
X return( count );
X}
X
Xmatch_string(mailfile, string)
XFILE *mailfile;
Xchar *string;
X{
X /** Increment "messages" and put the number of the message
X in the message_count[] buffer until we match the specified
X string... **/
X
X char buffer[SLEN];
X int message_count = 0;
X
X while (fgets(buffer, SLEN, mailfile) != NULL) {
X if (strncmp(buffer, "From ", 5) == 0)
X message_count++;
X
X if (in_string(buffer, string)) {
X read_message[messages++] = message_count;
X rewind(mailfile);
X return;
X }
X }
X
X fprintf(stderr,"Couldn't find message containing '%s'\n", string);
X exit(1);
X}
X
Xint
Xnumcmp(a, b)
Xint *a, *b;
X{
X /** compare 'a' to 'b' returning less than, equal, or greater
X than, accordingly.
X **/
X
X return(*a - *b);
X}
X
Xstatic char from[SLEN], subject[SLEN], date[SLEN], to[SLEN];
X
Xpossibly_save(buffer)
Xchar *buffer;
X{
X /** Check to see what "buffer" is...save it if it looks
X interesting... We'll always try to get SOMETHING
X by tearing apart the "From " line... **/
X
X if (strncmp(buffer, "Date:", 5) == 0)
X strcpy(date, buffer);
X else if (strncmp(buffer, "Subject:", 8) == 0)
X strcpy(subject,buffer);
X else if (strncmp(buffer,"From:", 5) == 0)
X strcpy(from, buffer);
X else if (strncmp(buffer,"To: ", 3) == 0)
X strncpy(to, buffer, SLEN);
X else if (strncmp(buffer,"From ", 5) == 0) {
X sprintf(from, "From: %s\n", words(2,1, buffer));
X sprintf(date,"Date: %s", words(3,7, buffer));
X to[0] = '\0';
X }
X}
X
Xlist_saved_headers(page_break)
Xint page_break;
X{
X /** This routine will display the information saved from the
X message being listed...If it displays anything it'll end
X with a blank line... **/
X
X register int displayed_line = FALSE;
X static int messages_listed = 0;
X
X if (messages_listed++)
X if (page_break)
X putchar(FORMFEED);
X else
X printf(
X"\n--------------------------------------------------------------------\n\n\n");
X
X if (strlen(from) > 0) { printf("%s", from); displayed_line++;}
X if (strlen(subject) > 0) { printf("%s", subject); displayed_line++;}
X if (strlen(to) > 0) { printf("%s", to); displayed_line++;}
X if (strlen(date) > 0) { printf("%s", date); displayed_line++;}
X
X if (displayed_line)
X putchar('\n');
X}
X
Xchar *words(word, num_words, buffer)
Xint word, num_words;
Xchar *buffer;
X{
X /** Return a buffer starting at 'word' and containing 'num_words'
X words from buffer. Assume white space will delimit each word.
X **/
X
X static char internal_buffer[SLEN];
X char *wordptr, *bufptr, mybuffer[SLEN], *strtok();
X int wordnumber = 0, copying_words = 0;
X
X internal_buffer[0] = '\0'; /* initialize */
X
X strcpy(mybuffer, buffer);
X bufptr = (char *) mybuffer; /* and setup */
X
X while ((wordptr = strtok(bufptr, " \t")) != NULL) {
X if (++wordnumber == word) {
X strcpy(internal_buffer, wordptr);
X copying_words++;
X num_words--;
X }
X else if (copying_words) {
X strcat(internal_buffer, " ");
X strcat(internal_buffer, wordptr);
X num_words--;
X }
X
X if (num_words < 1)
X return((char *) internal_buffer);
X
X bufptr = NULL;
X }
X
X return( (char *) internal_buffer);
X}
X
Xint
Xexpand(infile)
Xchar *infile;
X{
X /** Expand the filename since the first character is a meta-
X character that should expand to the "maildir" variable
X in the users ".elmrc" file...
X
X Note: this is a brute force way of getting the entry out
X of the .elmrc file, and isn't recommended for the faint
X of heart!
X **/
X
X FILE *rcfile;
X char buffer[SLEN], *expanded_dir, *home, *getenv(), *bufptr;
X int foundit = 0;
X
X bufptr = (char *) buffer; /* same address */
X
X if ((home = getenv("HOME")) == NULL) {
X printf(
X "Can't expand environment variable $HOME to find .elmrc file!\n");
X exit(1);
X }
X
X sprintf(buffer, "%s/%s", home, elmrcfile);
X
X if ((rcfile = fopen(buffer, "r")) == NULL) {
X printf("Can't open your \".elmrc\" file (%s) for reading!\n",
X buffer);
X exit(1);
X }
X
X while (fgets(buffer, SLEN, rcfile) != NULL && ! foundit) {
X if (strncmp(buffer, "maildir", 7) == 0 ||
X strncmp(buffer, "folders", 7) == 0) {
X while (*bufptr != '=' && *bufptr)
X bufptr++;
X bufptr++; /* skip the equals sign */
X while (whitespace(*bufptr) && *bufptr)
X bufptr++;
X home = bufptr; /* remember this address */
X
X while (! whitespace(*bufptr) && *bufptr != '\n')
X bufptr++;
X
X *bufptr = '\0'; /* remove trailing space */
X foundit++;
X }
X }
X
X fclose(rcfile); /* be nice... */
X
X if (! foundit) {
X printf("Couldn't find \"maildir\" in your .elmrc file!\n");
X exit(1);
X }
X
X /** Home now points to the string containing your maildir, with
X no leading or trailing white space...
X **/
X
X expanded_dir = expand_define(home);
X
X sprintf(buffer, "%s%s%s", expanded_dir,
X (expanded_dir[strlen(expanded_dir)-1] == '/' ||
X infile[0] == '/') ? "" : "/", (char *) infile+1);
X
X strcpy(infile, buffer);
X}
X
Xchar *expand_define(maildir)
Xchar *maildir;
X{
X /** This routine expands any occurances of "~" or "$var" in
X the users definition of their maildir directory out of
X their .elmrc file.
X
X Again, another routine not for the weak of heart or staunch
X of will!
X **/
X
X static char buffer[SLEN]; /* static buffer AIEE!! */
X char name[SLEN], /* dynamic buffer!! (?) */
X *nameptr, /* pointer to name?? */
X *value; /* char pointer for munging */
X
X if (*maildir == '~')
X sprintf(buffer, "%s%s", getenv("HOME"), ++maildir);
X else if (*maildir == '$') { /* shell variable */
X
X /** break it into a single word - the variable name **/
X
X strcpy(name, (char *) maildir + 1); /* hurl the '$' */
X nameptr = (char *) name;
X while (*nameptr != '/' && *nameptr) nameptr++;
X *nameptr = '\0'; /* null terminate */
X
X /** got word "name" for expansion **/
X
X if ((value = getenv(name)) == NULL) {
X printf("Couldn't expand shell variable $%s in .elmrc!\n", name);
X exit(1);
X }
X sprintf(buffer, "%s%s", value, maildir + strlen(name) + 1);
X }
X else
X strcpy(buffer, maildir);
X
X return( ( char *) buffer);
X}
X
Xint
Xreal_from(buffer)
Xchar *buffer;
X{
X /***** Returns true iff 's' has the seven 'from' fields, (or
X 8 - some machines include the TIME ZONE!!!) *****/
X
X char sixthword[STRING], seventhword[STRING],
X eighthword[STRING], ninthword[STRING];
X
X /* From <user> <day> <month> <day> <hr:min:sec> <year> */
X
X if(strncmp(buffer, "From ", 5) != 0)
X return(FALSE);
X
X /* Extract 6th, 7th, 8th, and 9th words */
X seventhword[0] = eighthword[0] = ninthword[0] = '\0';
X sscanf(buffer, "%*s %*s %*s %*s %*s %s %s %s %s",
X sixthword, seventhword, eighthword, ninthword);
X
X /* Not a from line if 6th word doesn't have colons for time field */
X if(strlen(sixthword) < 3)
X return(FALSE);
X if (sixthword[1] != ':' && sixthword[2] != ':')
X return(FALSE);
X
X /* Not a from line if there is no seventh word */
X if(seventhword[0] == '\0')
X return(FALSE);
X
X /* Not a from line if there is a ninthword */
X if (eighthword[0] != '\0') {
X if(ninthword[0] != '\0')
X return(FALSE);
X }
X
X return(TRUE);
X}
SHAR_EOF
chmod 0444 utils/readmsg.c || echo "restore of utils/readmsg.c fails"
rm -f s2_seq_.tmp
echo "You have unpacked the last part"
exit 0
--
Please send comp.sources.unix-related mail to rsalz@uunet.uu.net.