rsalz@uunet.uu.net (Rich Salz) (06/06/90)
Submitted-by: Syd Weinstein <syd@dsinc.dsi.com>
Posting-number: Volume 22, Issue 83
Archive-name: elm2.3/part25
---- Cut Here and unpack ----
#!/bin/sh
# this is part 25 of a multipart archive
# do not concatenate these parts, unpack them in order with /bin/sh
# file utils/from.c continued
#
CurArch=25
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 $Scheck next!"
exit 1;
else exit 0; fi
) < s2_seq_.tmp || exit 1
echo "x - Continuing file utils/from.c"
sed 's/^X//' << 'SHAR_EOF' >> utils/from.c
X temp[i] = '\0';
X temp++;
X }
X
X /* if anything is left, let's change 'from' value! */
X
X if (strlen(temp) > 0)
X strcpy(newfrom, temp);
X }
X}
X
Xreverse(string)
Xchar *string;
X{
X /** reverse string... pretty trivial routine, actually! **/
X
X char buffer[SLEN];
X register int i, j = 0;
X
X for (i = strlen(string)-1; i >= 0; i--)
X buffer[j++] = string[i];
X
X buffer[j] = '\0';
X
X strcpy(string, buffer);
X}
SHAR_EOF
echo "File utils/from.c is complete"
chmod 0444 utils/from.c || echo "restore of utils/from.c fails"
echo "x - extracting utils/listalias.c (Text)"
sed 's/^X//' << 'SHAR_EOF' > utils/listalias.c &&
X
Xstatic char rcsid[] = "@(#)$Id: listalias.c,v 4.1 90/04/28 22:44:42 syd Exp $";
X
X/*******************************************************************************
X * The Elm Mail System - $Revision: 4.1 $ $State: Exp $
X *
X * Copyright (c) 1986, 1987 Dave Taylor
X * Copyright (c) 1988, 1989, 1990 USENET Community Trust
X *******************************************************************************
X * Bug reports, patches, comments, suggestions should be sent to:
X *
X * Syd Weinstein, Elm Coordinator
X * elm@DSI.COM dsinc!elm
X *
X *******************************************************************************
X * $Log: listalias.c,v $
X * Revision 4.1 90/04/28 22:44:42 syd
X * checkin of Elm 2.3 as of Release PL0
X *
X *
X ******************************************************************************/
X
X/** Program that lists all the available aliases. This one uses the pipe
X command, feeding the stuff to egrep then sort, or just sort.
X
X**/
X
X#include <stdio.h>
X#include <fcntl.h>
X
X#include "defs.h"
X#include "sysdefs.h"
X
X#ifdef BSD
X FILE *popen();
X#endif
X
Xchar *getenv();
X
Xmain(argc, argv)
Xint argc;
Xchar *argv[];
X{
X FILE *datafile, *fd_pipe;
X struct alias_rec hash_record;
X int hashfile, count = 0;
X char buffer[SLEN], fd_hash[SLEN],
X fd_data[SLEN], *home;
X
X if (argc > 2) {
X printf("Usage: listalias <optional-regular-expression>\n");
X exit(1);
X }
X
X home = getenv("HOME");
X
X sprintf(fd_hash, "%s/%s", home, ALIAS_HASH);
X sprintf(fd_data, "%s/%s", home, ALIAS_DATA);
X
X if (argc > 1)
X sprintf(buffer, "egrep \"%s\" | sort", argv[1]);
X else
X sprintf(buffer, "sort");
X
X if ((fd_pipe = popen(buffer, "w")) == NULL) {
X if (argc > 1)
X printf("cannot open pipe to egrep program for expressions!\n");
X fd_pipe = stdout;
X }
X
X do {
X
X if ((hashfile = open(fd_hash, O_RDONLY)) > 0) {
X if ((datafile = fopen(fd_data, "r")) == NULL) {
X printf("Opened %s hash file, but couldn't open data file!\n",
X count? "system" : "user");
X goto next_file;
X }
X
X /** Otherwise let us continue... **/
X
X while (read(hashfile, &hash_record, sizeof (hash_record)) != 0) {
X if (strlen(hash_record.name) > 0) {
X fseek(datafile, ntohl(hash_record.byte), 0L);
X fgets(buffer, SLEN, datafile);
X fprintf(fd_pipe, "%-15s %s", hash_record.name, buffer);
X }
X }
X }
X
Xnext_file: strcpy(fd_hash, system_hash_file);
X strcpy(fd_data, system_data_file);
X
X } while (++count < 2);
X
X pclose(fd_pipe);
X
X exit(0);
X}
SHAR_EOF
chmod 0444 utils/listalias.c || echo "restore of utils/listalias.c fails"
echo "x - extracting utils/mailrc.awk (Text)"
sed 's/^X//' << 'SHAR_EOF' > utils/mailrc.awk &&
X#
X# @(#)$Id: mailrc.awk,v 4.1 90/04/28 22:44:44 syd Exp $
X# Copyright (c) 1986, 1987 Dave Taylor
X# Copyright (c) 1988, 1989, 1990 USENET Community Trust
X# Bug reports, patches, comments, suggestions should be sent to:
X#
X# Syd Weinstein, Elm Coordinator - elm@DSI.COM
X# dsinc!elm
X#
X# $Log: mailrc.awk,v $
X# Revision 4.1 90/04/28 22:44:44 syd
X# checkin of Elm 2.3 as of Release PL0
X#
X#
X
X
XBEGIN {
X print "# MSG alias_text file, from a .mailrc file..."
X print ""
X }
X
Xnext_line == 1 {
X
X next_line = 0;
X group = ""
X for (i = 1; i <= NF; i++) {
X if (i == NF && $i == "\\") sep = ""
X else sep = ", "
X
X if ($i == "\\") {
X group = sprintf("%s,", group)
X next_line = 1;
X }
X else if (length(group) > 0)
X group = sprintf("%s%s%s", group, sep, $i);
X else
X group = $i;
X }
X print "\t" group
X
X }
X
X$1 ~ /[Aa]lias|[Gg]roup/ {
X
X if ( NF == 3)
X print $2 " = user alias = " $3;
X else {
X group = ""
X for (i = 3; i <= NF; i++) {
X if (i == NF && $i == "\\") sep = ""
X else sep = ", "
X
X if ($i == "\\") {
X group = sprintf("%s,", group)
X next_line = 1;
X }
X else if (length(group) > 0)
X group = sprintf("%s%s%s", group, sep, $i);
X else
X group = $i;
X }
X print $2 " = group alias = " group;
X }
X }
SHAR_EOF
chmod 0444 utils/mailrc.awk || echo "restore of utils/mailrc.awk fails"
echo "x - extracting utils/messages (Text)"
sed 's/^X//' << 'SHAR_EOF' > utils/messages &&
X: Use /bin/sh
X# messages: part of the Elm mail system
X# @(#)$Id: messages,v 4.1 90/04/28 22:44:45 syd Exp $
X
Xif [ "$2" != "" ]; then
X echo Usage: messages \{folder-name\} 1>&2
X exit 1
Xfi
X
Xif [ "$1" = "" ]; then
X fname=$MAIL
X optional="in your mailbox"
Xelse
X fname=$1
X optional="in folder $1"
Xfi
X
Xif [ -f "$fname" ]; then
X mcount=`egrep -c "^From " $fname`
Xelse
X exit 0
Xfi
X
Xif [ "$mcount" -eq 1 ]; then
X echo There is $mcount message $optional.
Xelse
X echo There are $mcount messages $optional.
Xfi
X
Xexit $mcount
SHAR_EOF
chmod 0444 utils/messages || echo "restore of utils/messages fails"
echo "x - extracting utils/newalias.c (Text)"
sed 's/^X//' << 'SHAR_EOF' > utils/newalias.c &&
X
Xstatic char rcsid[] = "@(#)$Id: newalias.c,v 4.1 90/04/28 22:44:46 syd Exp $";
X
X/*******************************************************************************
X * The Elm Mail System - $Revision: 4.1 $ $State: Exp $
X *
X * Copyright (c) 1986, 1987 Dave Taylor
X * Copyright (c) 1988, 1989, 1990 USENET Community Trust
X *******************************************************************************
X * Bug reports, patches, comments, suggestions should be sent to:
X *
X * Syd Weinstein, Elm Coordinator
X * elm@DSI.COM dsinc!elm
X *
X *******************************************************************************
X * $Log: newalias.c,v $
X * Revision 4.1 90/04/28 22:44:46 syd
X * checkin of Elm 2.3 as of Release PL0
X *
X *
X ******************************************************************************/
X
X/** Install a new set of aliases for the 'Elm' mailer.
X
X If invoked with a specific filename, it assumes that
X it is working with an individual users alias tables, and
X generates the .alias.hash and .alias.data files in their
X home directory.
X If, however, it is invoked with no arguments, then
X it assumes that the user is updating the system alias
X file and uses the defaults for everything.
X
X The format for the input file is;
X alias1, alias2, ... = username = address
Xor alias1, alias2, ... = groupname= member, member, member, ...
X member, member, member, ...
X
X**/
X
X#include <stdio.h>
X#include "defs.h"
X#include "sysdefs.h" /* ELM system definitions */
X#include <ctype.h>
X
X#ifdef BSD
X# include <sys/file.h>
X# undef tolower
X# undef toupper
X#else
X# include <fcntl.h>
X#endif
X
Xstatic char ident[] = { WHAT_STRING };
X
X#define group(string) (strpbrk(string,", ") != NULL)
X
Xstruct alias_rec
Xshash_table[MAX_SALIASES]; /* the actual hash table */
X
Xstruct alias_rec
Xuhash_table[MAX_UALIASES]; /* the actual hash table */
X
Xint hash_table_loaded=0; /* is system table actually loaded? */
X
Xint buff_loaded; /* for file input overlap... */
Xint error= 0; /* if errors, don't save! */
Xint is_system=0; /* system file updating? */
Xint count=0; /* how many aliases so far? */
Xlong offset = 0L; /* data file line offset! */
Xchar home[SLEN]; /* the users home directory */
X
Xmain(argc, argv)
Xint argc;
Xchar *argv[];
X{
X FILE *in, *data;
X char inputname[SLEN], hashname[SLEN], dataname[SLEN];
X char buffer[LONG_STRING];
X int a, hash, count = 0, owner;
X
X for (a = 1; a < argc; ++a) {
X if (strcmp(argv[a], "-g") == 0)
X is_system = 1;
X else {
X printf("Usage: %s [-g]\n", argv[0]);
X exit(1);
X }
X }
X
X if (is_system) { /* update system aliases */
X printf("Updating the system alias file...\n");
X
X strcpy(inputname, system_text_file);
X strcpy(hashname, system_hash_file);
X strcpy(dataname, system_data_file);
X init_table(shash_table, MAX_SALIASES);
X }
X else
X printf("Updating your personal alias file...\n");
X
X if (! is_system) {
X if (strcpy(home, getenv("HOME")) == NULL) {
X printf("I'm confused - no HOME variable in environment!\n");
X exit(1);
X }
X
X sprintf(inputname, "%s/%s", home, ALIAS_TEXT);
X sprintf(hashname, "%s/%s", home, ALIAS_HASH);
X sprintf(dataname, "%s/%s", home, ALIAS_DATA);
X
X init_table(uhash_table, MAX_UALIASES);
X
X read_in_system(shash_table, sizeof shash_table);
X }
X
X if ((in = fopen(inputname,"r")) == NULL) {
X /** let's see if they have the files in the old place... **/
X sprintf(buffer, "%s/.alias_text", home);
X if (access(buffer, ACCESS_EXISTS) != -1) {
X update_alias_file_locations();
X in = fopen(inputname, "r");
X }
X else {
X printf("Couldn't open %s for input!\n", inputname);
X exit(1);
X }
X }
X
X if ((hash = open(hashname, O_WRONLY | O_CREAT, 0644)) == -1) {
X printf("Couldn't open %s for output!\n", hashname);
X exit(1);
X }
X
X if ((data = fopen(dataname,"w")) == NULL) {
X printf("Couldn't open %s for output!\n", dataname);
X exit(1);
X }
X
X buff_loaded = 0; /* file buffer empty right now! */
X
X while (get_alias(in, buffer) != -1) {
X if (is_system)
X put_alias(data, buffer, shash_table, MAX_SALIASES);
X else
X put_alias(data, buffer, uhash_table, MAX_UALIASES);
X count++;
X }
X
X if (error) {
X printf("\n** Not saving tables! Please fix and re-run %s!\n",
X argv[0]);
X exit(1);
X }
X else {
X if (is_system)
X write(hash, shash_table, sizeof shash_table);
X else
X write(hash, uhash_table, sizeof uhash_table);
X
X close(hash);
X fclose(data);
X fclose(in);
X
X printf("Processed %d aliases\n", count);
X exit(0);
X }
X}
X
Xint
Xget_alias(file, buffer)
XFILE *file;
Xchar *buffer;
X{
X /* load buffer with the next complete alias from the file.
X (this can include reading in multiple lines and appending
X them all together!) Returns EOF after last entry in file.
X
X Lines that start with '#' are assumed to be comments and are
X ignored. White space as the first field of a line is taken
X to indicate that this line is a continuation of the previous. */
X
X static char mybuffer[SLEN];
X int done = 0, first_read = 1;
X
X /** get the first line of the entry... **/
X
X buffer[0] = '\0'; /* zero out line */
X
X do {
X if (get_line(file, mybuffer, first_read) == -1)
X return(-1);
X first_read = 0;
X if (mybuffer[0] != '#')
X strcpy(buffer, mybuffer);
X } while (strlen(buffer) == 0);
X
X /** now read in the rest (if there is any!) **/
X
X do {
X if (get_line(file, mybuffer, first_read) == -1) {
X buff_loaded = 0; /* force a read next pass! */
X return(0); /* okay. let's just hand 'buffer' back! */
X }
X done = (! whitespace(mybuffer[0]));
X if (! done)
X strcat(buffer, mybuffer);
X done = (done && mybuffer[0] != '#');
X } while (! done);
X
X return(0); /* no sweat! */
X}
X
Xput_alias(data, buffer, table, size)
XFILE *data;
Xchar *buffer;
Xstruct alias_rec table[];
Xint size;
X{
X /** break buffer down into three pieces: aliases, comment, and address.
X Make the appropriate entries in the table (size)
X **/
X
X char aliases[LONG_STRING], address[LONG_STRING];
X char comment[LONG_STRING], c;
X int first, last, i = 0, j = 0;
X
X remove_all(' ', TAB, buffer);
X
X for (i=0; buffer[i] != '=' && i < LONG_STRING; i++)
X aliases[i] = buffer[i];
X aliases[i] = '\0';
X
X for (i=strlen(buffer)-1; buffer[i] != '=' && i > 0; i--)
X address[j++] = buffer[i];
X address[j] = '\0';
X
X comment[0] = '\0'; /* default to nothing at all... */
X
X if ((first=strlen(aliases)+1) < (last=(strlen(buffer) - j))) {
X extract_comment(comment, buffer, first, last);
X }
X
X reverse(address);
X
X add_to_table(data, aliases, comment, address, table, size);
X}
X
Xint
Xget_line(file, buffer, first_line)
XFILE *file;
Xchar *buffer;
Xint first_line;
X{
X /** read line from file. If first_line and buff_loaded,
X then just return! **/
X
X int stat, len;
X
X if (first_line && buff_loaded) {
X buff_loaded = 1;
X return(0);
X }
X
X buff_loaded = 1; /* we're going to get SOMETHING in the buffer */
X
X stat = fgets(buffer, SLEN, file) == NULL ? -1 : 0;
X
X if (stat != -1) {
X len = strlen(buffer);
X if (len > 0) {
X if (buffer[len - 1] != '\n') {
X printf("Line too long, split using continuation line format (starting line\nwith whitespace):\n%s\n\n", buffer);
X exit(1);
X }
X }
X no_ret(buffer);
X }
X
X return(stat);
X}
X
Xreverse(string)
Xchar *string;
X{
X /** reverse the order of the characters in string...
X uses a bubble-sort type of algorithm! **/
X
X register int f, l;
X char c;
X
X f = 0;
X l = strlen(string) - 1;
X
X while (f < l) {
X c = string[f];
X string[f] = string[l];
X string[l] = c;
X f++;
X l--;
X }
X}
X
Xadd_to_table(data, aliases, comment, address, table, size)
XFILE *data;
Xchar *aliases, *comment, *address;
Xstruct alias_rec table[];
Xint size;
X{
X /** add address + comment to datafile, incrementing offset count
X (bytes), then for each alias in the aliases string, add to the
X hash table, with the associated pointer value! **/
X
X static char buf[SLEN], *word, *s;
X long additive = 1L;
X
X word = buf; /* use the allocated space! */
X
X for ( s = aliases ; *s != '\0' && (ok_alias_char(*s)||*s==',') ; ++s ) ;
X if ( *s != '\0' ) {
X printf("Error - character '%c' in alias '%s' is not supported.\n",
X *s, aliases);
X error++;
X return;
X }
X
X if (group(address)) {
X check_group(address, aliases);
X if (error) return; /* don't do work if we aren't to save it! */
X fprintf(data, "!%s\n", address);
X additive = 2L;
X }
X else {
X if (error) return; /* don't do work if we aren't to save it! */
X if (strlen(comment) > 0) {
X fprintf(data, "%s (%s)\n", address, comment);
X additive = (long) (strlen(comment) + 4);
X }
X else
X fprintf(data, "%s\n", address, comment);
X }
X
X while ((word = (char *) strtok(aliases,", ")) != NULL) {
X add_to_hash_table(word, offset, table, size);
X aliases = NULL; /* let's get ALL entries via 'strtok' */
X count++;
X }
X
X if ( is_system ? count > MAX_SALIASES-35 : count > MAX_UALIASES-21) {
X printf("** Too many aliases in file! **\n");
X error++;
X }
X
X offset = (offset + (long) strlen(address) + additive);
X}
X
Xremove_all(c1, c2, string)
Xchar c1, c2, *string;
X{
X /* Remove all occurances of character 'c1' or 'c2' from the string.
X Hacked (literally) to NOT remove ANY characters from within the
X equals fields. This will only be used if the line contains TWO
X equalss (and comments with equalss in them are the kiss of death!)
X */
X
X char buffer[LONG_STRING];
X register int i = 0, j = 0, first_equals = -1, last_equals = -1;
X
X for (i = 0; string[i] != '\0' && i < LONG_STRING; i++) {
X if (string[i] != c1 && string[i] != c2)
X buffer[j++] = string[i];
X
X if (first_equals == -1 && string[i] == '=') {
X first_equals = i;
X for (last_equals=strlen(string);string[last_equals] != '=';
X last_equals--) ;
X }
X else if (i > first_equals && i < last_equals)
X if (string[i] == c1 || string[i] == c2)
X buffer[j++] = string[i];
X }
X
X buffer[j] = '\0';
X strcpy(string, buffer);
X}
X
Xadd_to_hash_table(word, offset, table, size)
Xchar *word;
Xlong offset;
Xstruct alias_rec table[];
Xint size;
X{
X /** add word and offset to current hash table. **/
X register int loc;
X
X if (strlen(word) > 20) {
X printf("Bad alias name: %s. Too long.\n", word);
X exit(1);
X }
X
X loc = hash_it(word, size);
X
X while (table[loc].name[0] != '\0' && stricmp(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 = htonl(offset);
X }
X else
X printf("** Duplicate alias '%s' in file. Multiples ignored.\n",
X word);
X}
X
Xint
Xstricmp(s1,s2)
Xregister char *s1, *s2;
X{
X /* case insensitive comparison */
X register int d;
X for (;;) {
X d = ( isupper(*s1) ? tolower(*s1) : *s1 )
X - ( isupper(*s2) ? tolower(*s2) : *s2 ) ;
X if ( d != 0 || *s1 == '\0' || *s2 == '\0' )
X return d;
X ++s1;
X ++s2;
X }
X /*NOTREACHED*/
X}
X
Xint
Xhash_it(string, table_size)
Xregister char *string;
Xint table_size;
X{
X /** compute the hash function of the string, returning
X it (mod table_size) **/
X
X register int sum = 0;
X for ( ; *string != '\0' ; ++string )
X sum += (int) ( isupper(*string) ? tolower(*string) : *string );
X return(sum % table_size);
X}
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 int aliased;
X
X strcpy(buffer, names);
X bufptr = (char *) buffer;
X names[0] = '\0';
X
X while ((word = (char *) strtok(bufptr,", ")) != NULL) {
X if (! (aliased = 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 if (names[0])
X strcat(names, ", ");
X strcat(names, word);
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 (stricmp(name, shash_table[loc].name) != 0 &&
X shash_table[loc].name[0] != '\0')
X loc = (loc + 1) % MAX_SALIASES;
X
X if (stricmp(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 (stricmp(name, uhash_table[loc].name) != 0 &&
X uhash_table[loc].name[0] != '\0')
X loc = (loc + 1) % MAX_UALIASES;
X
X if (stricmp(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 $HOME/.elm");
X#endif /* MKDIR */
X
X /** now *link* the files... **/
X
X sprintf(source, "%s/.alias_text", home);
X sprintf(dest, "%s/%s", home, ALIAS_TEXT);
X link(source, dest);
X
X sprintf(source, "%s/.alias_hash", home);
X sprintf(dest, "%s/%s", home, ALIAS_HASH);
X link(source, dest);
X
X sprintf(source, "%s/.alias_data", home);
X sprintf(dest, "%s/%s", home, ALIAS_DATA);
X link(source, dest);
X
X printf("\n*** Moved all data files into %s/.elm directory ***\n\n",
X home);
X}
SHAR_EOF
chmod 0444 utils/newalias.c || echo "restore of utils/newalias.c fails"
echo "x - extracting utils/newmail.c (Text)"
sed 's/^X//' << 'SHAR_EOF' > utils/newmail.c &&
X
Xstatic char rcsid[] = "@(#)$Id: newmail.c,v 4.1 90/04/28 22:44:48 syd Exp $";
X
X/*******************************************************************************
X * The Elm Mail System - $Revision: 4.1 $ $State: Exp $
X *
X * Copyright (c) 1986, 1987 Dave Taylor
X * Copyright (c) 1988, 1989, 1990 USENET Community Trust
X *******************************************************************************
X * Bug reports, patches, comments, suggestions should be sent to:
X *
X * Syd Weinstein, Elm Coordinator
X * elm@DSI.COM dsinc!elm
X *
X *******************************************************************************
X * $Log: newmail.c,v $
X * Revision 4.1 90/04/28 22:44:48 syd
X * checkin of Elm 2.3 as of Release PL0
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
X#ifdef PIDCHECK
Xint parent_pid; /* See if sucide should be attempt */
X#endif /* PIDCHECK */
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#ifdef PIDCHECK /* This will get the pid that */
X parent_pid = getppid(); /* started the program, ie: /bin/sh */
X /* If it dies for some reason (logout)*/
X#endif /* PIDCHECK */ /* Then exit the program if PIDCHECK */
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(argv[0]); 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#ifdef PIDCHECK
X if ( kill(parent_pid,0))
X exit(0);
X#else
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 /* AUTO_BACKGROUND */
X#endif /* PIDCHECK */
X
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 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 = 0, count = 0, priority=0;
X#ifdef MMDF
X int newheader = 0;
X#endif /* MMDF */
X
X from_whom[0] = '\0';
X
X while (fgets(buffer, SLEN, folders[current_folder].fd) != NULL) {
X#ifdef MMDF
X if (strcmp(buffer, MSG_SEPERATOR) == 0) {
X newheader = !newheader;
X if (newheader) {
X#else
X if (first_word(buffer,"From ")) {
X if (real_from(buffer, from_whom)) {
X#endif /* MMDF */
X subj = 0;
X priority = 0;
X in_header = 1;
X subject[0] ='\0';
X if (in_window)
X putchar((char) 007); /* BEEP!*/
X else
X printf("\n\r"); /* blank lines surrounding message */
X
X }
X }
X else if (in_header) {
X#ifdef MMDF
X if (first_word(buffer,"From "))
X real_from(buffer, from_whom);
X#endif /* MMDF */
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#ifdef MMDF
X if (*from_whom == '\0')
X strcpy(from_whom,getusername());
X#endif /* MMDF */
X show_header(priority, from_whom, subject, current_folder);
X count++;
X from_whom[0] = '\0';
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], who_tmp[SLEN];
X
X junk[0] = '\0';
X who_tmp[0] = '\0';
X
X sscanf(buffer, "%*s %s %*s %*s %*s %*s %s",
X who, junk);
X
X if (junk[0] != '\0')
X strcpy(who, who_tmp);
X
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, len;
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 len = strlen(from);
X while (loc < len && 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 three formats:
X From: Dave Taylor <hpcnou!dat>
X or From: hpcnou!dat (Dave Taylor)
X or From: hpcnou!dat
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 else
X /* Unusual to have address like - From: hpcnou!dat
X * but valid */
X {
X for (i=strlen("From: "); buffer[i] != '\0'; i++)
X temp[j++] = buffer[i];
X temp[j] = '\0';
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(name)
Xchar *name;
X{
X /* print a nice friendly usage message */
X
X fprintf(stderr,
X"\nUsage: %s [-d] [-i interval] [-w] {folders}\n", name);
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 4.1 90/04/28 22:44:50 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 4.1 90/04/28 22:44:52 syd Exp $";
X
X/*******************************************************************************
X * The Elm Mail System - $Revision: 4.1 $ $State: Exp $
X *
X * Copyright (c) 1986, 1987 Dave Taylor
X * Copyright (c) 1988, 1989, 1990 USENET Community Trust
X *******************************************************************************
X * Bug reports, patches, comments, suggestions should be sent to:
X *
X * Syd Weinstein, Elm Coordinator
X * elm@DSI.COM dsinc!elm
X *
X *******************************************************************************
X * $Log: readmsg.c,v $
X * Revision 4.1 90/04/28 22:44:52 syd
X * checkin of Elm 2.3 as of Release PL0
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
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#ifdef MMDF
X newheader = 0, /* flag: hit ^A^A^A^A line */
X#endif /* MMDF */
X string_match = 0; /* flag: using string match? */
X string[0] = '\0'; /* init match string to empty */
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" */
SHAR_EOF
echo "End of part 25"
echo "File utils/readmsg.c is continued in part 26"
echo "26" > s2_seq_.tmp
exit 0
exit 0 # Just in case...
--
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