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/* Copyright 1993-95 by Carl Harris, Jr.
* All rights reserved
*
* Distribute freely, except: don't remove my name from the source or
* documentation (don't take credit for my work), mark your changes (don't
* get me blamed for your possible bugs), don't alter or remove this
* notice. May be sold if buildable source is provided to buyer. No
* warrantee of any kind, express or implied, is included with this
* software; use at your own risk, responsibility for damages (if any) to
* anyone resulting from the use of this software rests entirely with the
* user.
*
* Send bug reports, bug fixes, enhancements, requests, flames, etc., and
* I'll try to keep a version up to date. I can be reached as follows:
* Carl Harris <ceharris@mal.com>
*/
/***********************************************************************
module: options.c
project: popclient
programmer: Carl Harris, ceharris@mal.com
description: command-line option processing
$Log: options.c,v $
Revision 1.1 1996/06/24 18:11:08 esr
Initial revision
Revision 1.4 1995/08/14 18:36:39 ceharris
Patches to support POP3's LAST command.
Final revisions for beta3 release.
Revision 1.3 1995/08/10 00:32:34 ceharris
Preparation for 3.0b3 beta release:
- added code for --kill/--keep, --limit, --protocol, --flush
options; --pop2 and --pop3 options now obsoleted by --protocol.
- added support for APOP authentication, including --with-APOP
argument for configure.
- provisional and broken support for RPOP
- added buffering to SockGets and SockRead functions.
- fixed problem of command-line options not being correctly
carried into the merged options record.
Revision 1.2 1995/08/09 01:32:51 ceharris
Version 3.0 beta 2 release.
Added
- .poprc functionality
- GNU long options
- multiple servers on the command line.
Fixed
- Passwords showing up in ps output.
Revision 1.1 1995/08/08 01:01:21 ceharris
Added GNU-style long options processing.
Fixed password in 'ps' output problem.
Fixed various RCS tag blunders.
Integrated .poprc parser, lexer, etc into Makefile processing.
***********************************************************************/
#include <config.h>
#include <stdio.h>
#include <pwd.h>
#include "getopt.h"
#include "popclient.h"
#include "bzero.h"
/* XXX -- Would like to use 'enum' here, but it causes type mismatch
problems many compilers */
#define LA_VERSION 1
#define LA_ALL 2
#define LA_KILL 3
#define LA_KEEP 4
#define LA_VERBOSE 5
#define LA_SILENT 6
#define LA_STDOUT 7
#define LA_LIMIT 8
#define LA_FLUSH 9
#define LA_PROTOCOL 10
#define LA_DAEMON 11
#define LA_POPRC 12
#define LA_USERNAME 13
#define LA_PASSWORD 14
#define LA_REMOTEFILE 15
#define LA_LOCALFILE 16
static char *shortoptions = "23VaKkvscl:Fd:f:u:p:r:o:";
static struct option longoptions[] = {
{"version", no_argument, (int *) 0, LA_VERSION },
{"all", no_argument, (int *) 0, LA_ALL },
{"kill", no_argument, (int *) 0, LA_KILL },
{"keep", no_argument, (int *) 0, LA_KEEP },
{"verbose", no_argument, (int *) 0, LA_VERBOSE },
{"silent", no_argument, (int *) 0, LA_SILENT },
{"stdout", no_argument, (int *) 0, LA_STDOUT },
{"limit", required_argument, (int *) 0, LA_LIMIT },
{"flush", no_argument, (int *) 0, LA_FLUSH },
{"protocol", required_argument, (int *) 0, LA_PROTOCOL },
{"proto", required_argument, (int *) 0, LA_PROTOCOL },
{"daemon", required_argument, (int *) 0, LA_DAEMON },
{"poprc", required_argument, (int *) 0, LA_POPRC },
{"user", required_argument, (int *) 0, LA_USERNAME },
{"username", required_argument, (int *) 0, LA_USERNAME },
{"password", required_argument, (int *) 0, LA_PASSWORD },
{"remote", required_argument, (int *) 0, LA_REMOTEFILE },
{"local", required_argument, (int *) 0, LA_LOCALFILE },
{(char *) 0, no_argument, (int *) 0, 0 }
};
/*********************************************************************
function: parsecmdline
description: parse/validate the command line options.
arguments:
argc argument count.
argv argument strings.
options pointer to a struct optrec to receive the parsed
options.
return value: if positive, argv index of last parsed option + 1
(presumes one or more server names follows).
if zero, the command line switches are such that
no server names are required (e.g. --version).
if negative, the command line is has one or more
syntax errors.
calls: none.
globals: none.
*********************************************************************/
int parsecmdline (argc,argv,options)
int argc;
char **argv;
struct optrec *options;
{
int c,i;
int fflag = 0; /* TRUE when -o or -c has been specified */
int errflag = 0; /* TRUE when a syntax error is detected */
int option_index;
int got_kill = 0; /* TRUE when --kill is specified */
extern int optind, opterr; /* defined in getopt(2) */
extern char *optarg; /* defined in getopt(2) */
bzero(options,sizeof(struct optrec)); /* start clean */
while (!errflag &&
(c = getopt_long(argc,argv,shortoptions,
longoptions,&option_index)) != -1) {
switch (c) {
case '2':
options->whichpop = P_POP2;
break;
case '3':
options->whichpop = P_POP3;
break;
case 'V':
case LA_VERSION:
options->versioninfo = !0;
break;
case 'a':
case LA_ALL:
options->fetchall = !0;
break;
case 'K':
case LA_KILL:
options->keep = 0;
got_kill = 1;
break;
case 'k':
case LA_KEEP:
options->keep = !0;
got_kill = 0;
break;
case 'v':
case LA_VERBOSE:
options->verbose = !0;
break;
case 's':
case LA_SILENT:
options->silent = !0;
break;
case 'c':
case LA_STDOUT:
if (fflag)
errflag++;
else {
fflag++;
options->foldertype = OF_STDOUT;
}
break;
case 'l':
case LA_LIMIT:
options->limit = atoi(optarg);
if (options->limit < 0) {
fprintf(stderr,"Line count limit must be non-negative");
errflag++;
}
break;
case 'F':
case LA_FLUSH:
options->flush = !0;
break;
case LA_PROTOCOL:
/* XXX -- should probably use a table lookup here */
if (strcasecmp(optarg,"pop2") == 0)
options->whichpop = P_POP2;
else if (strcasecmp(optarg,"pop3") == 0)
options->whichpop = P_POP3;
else if (strcasecmp(optarg,"imap") == 0)
options->whichpop = P_IMAP;
else if (strcasecmp(optarg,"apop") == 0)
options->whichpop = P_APOP;
else if (strcasecmp(optarg,"rpop") == 0)
options->whichpop = P_RPOP;
else {
fprintf(stderr,"Invalid protocol '%s'\n specified.\n", optarg);
errflag++;
}
break;
case 'd':
case LA_DAEMON:
fprintf(stderr,"Got daemonize option with argument '%s'\n",optarg);
break;
case 'f':
case LA_POPRC:
options->poprcfile = (char *) xmalloc(strlen(optarg)+1);
strcpy(options->poprcfile,optarg);
break;
case 'u':
case LA_USERNAME:
strncpy(options->userid,optarg,sizeof(options->userid)-1);
break;
case 'p':
case LA_PASSWORD:
strncpy(options->password,optarg,sizeof(options->password)-1);
for (i = strlen(options->password)-1; i >= 0; i--)
argv[optind-1][i] = '*';
break;
case 'o':
case LA_LOCALFILE:
if (fflag)
errflag++;
else {
fflag++;
options->foldertype = OF_USERMBOX;
strncpy(options->userfolder,optarg,sizeof(options->userfolder)-1);
}
break;
case 'r':
case LA_REMOTEFILE:
strncpy(options->remotefolder,optarg,sizeof(options->remotefolder)-1);
break;
default:
errflag++;
}
}
if (!options->versioninfo)
/* if options don't obviate the need, we must have server name(s)
left on the command line. */
if (optind >= argc)
errflag++;
else
;
else
optind = 0;
if (errflag) {
/* squawk if syntax errors were detected */
fputs("usage: popclient [options] server [server ...]\n", stderr);
fputs(" options\n",stderr);
fputs(" -2 use POP2 protocol\n", stderr);
fputs(" -3 use POP3 protocol\n", stderr);
fputs(" --protocol specify pop2, pop3, imap, apop, or rpop\n",
stderr);
fputs(" -V, --version display version info\n", stderr);
fputs(" -a, --all retrieve old and new messages\n", stderr);
fputs(" -F, --flush delete old messages from server\n", stderr);
fputs(" -K, --kill delete new messages after retrieval\n", stderr);
fputs(" -k, --keep save new messages after retrieval\n", stderr);
fputs(" -l, --limit retrieve at most n message lines\n", stderr);
fputs(" -s, --silent work silently\n", stderr);
fputs(" -v, --verbose work noisily (diagnostic output)\n", stderr);
fputs(" -d, --daemon run as a daemon\n", stderr);
fputs(" -f, --poprc specify alternate config file\n", stderr);
fputs(" -u, --username specify server user ID\n", stderr);
fputs(" -p, --password specify server password\n", stderr);
fputs(" -c, --stdout write received mail to stdout\n", stderr);
fputs(" -o, --local specify filename for received mail\n", stderr);
fputs(" -r, --remote specify remote folder name\n", stderr);
return(-1);
}
else {
if (options->limit && !got_kill)
options->keep = !0;
else
;
return(optind);
}
}
/*********************************************************************
function: setdefaults
description: set reasonable default values for unspecified options.
arguments:
options option values parsed from the command-line; unspeci-
fied options must be filled with zero.
return value: zero if defaults were successfully set, else non-zero
(indicates a problem reading /etc/passwd).
calls: none.
globals: writes outlevel.
*********************************************************************/
int setdefaults (options)
struct optrec *options;
{
int uid;
struct passwd *pw;
char *mailvar;
bzero(options,sizeof(*options));
if ((pw = getpwuid(uid = getuid())) == NULL) {
fprintf(stderr,"No passwd entry for uid %d\n",uid);
return(-1);
}
/* save the login name for delivery use */
strcpy(options->loginid,pw->pw_name);
options->whichpop = DEF_PROTOCOL;
options->foldertype = OF_SYSMBOX;
#if defined(KEEP_IS_DEFAULT)
options->keep = 1;
#else
options->keep = 0;
#endif
strcpy(options->userid,pw->pw_name);
options->poprcfile =
(char *) xmalloc(strlen(pw->pw_dir)+strlen(POPRC_NAME)+2);
strcpy(options->poprcfile, pw->pw_dir);
strcat(options->poprcfile, "/");
strcat(options->poprcfile, POPRC_NAME);
return(0);
}
/******************************************************************
function: getnextserver
description: read next server name from the command line.
arguments:
argc from main()
argv from main()
optind as returned by parsecmdline and this function.
ret. value: next server name from command line or NULL if all
server names have been retrieved.
globals: none.
calls: none.
*****************************************************************/
char *getnextserver (argc,argv,optind)
int argc;
char **argv;
int *optind;
{
if (*optind >= argc) {
/* no more servers */
return((char *) 0);
}
else
return(argv[(*optind)++]);
}
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