/* Copyright 1993-95 by Carl Harris, Jr. Copyright 1996 by Eric S. Raymond * All rights reserved. * For license terms, see the file COPYING in this directory. */ /*********************************************************************** module: options.c project: popclient programmer: Carl Harris, ceharris@mal.com description: command-line option processing ***********************************************************************/ #include #include #include #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_REMOTEFILE 14 #define LA_LOCALFILE 15 #define LA_MDA 16 #define LA_LOGFILE 17 #define LA_QUIT 18 #define LA_YYDEBUG 19 static char *shortoptions = "23VaKkvscl:Fd:f:u:r:o:m:"; 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 }, {"remote", required_argument, (int *) 0, LA_REMOTEFILE }, {"local", required_argument, (int *) 0, LA_LOCALFILE }, {"mda", required_argument, (int *) 0, LA_MDA }, {"logfile", required_argument, (int *) 0, LA_LOGFILE }, {"quit", no_argument, (int *) 0, LA_QUIT }, {"yydebug", no_argument, (int *) 0, LA_YYDEBUG }, {(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: outlevel. *********************************************************************/ 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->protocol = P_POP2; break; case '3': options->protocol = 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: outlevel = O_VERBOSE; break; case 's': case LA_SILENT: outlevel = O_SILENT; break; case 'c': case LA_STDOUT: if (fflag) errflag++; else { fflag++; options->output = TO_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->protocol = P_POP2; else if (strcasecmp(optarg,"pop3") == 0) options->protocol = P_POP3; else if (strcasecmp(optarg,"imap") == 0) options->protocol = P_IMAP; else if (strcasecmp(optarg,"apop") == 0) options->protocol = P_APOP; else if (strcasecmp(optarg,"rpop") == 0) options->protocol = P_RPOP; else { fprintf(stderr,"Invalid protocol '%s'\n specified.\n", optarg); errflag++; } break; case 'd': case LA_DAEMON: poll_interval = atoi(optarg); break; case 'f': case LA_POPRC: poprcfile = (char *) xmalloc(strlen(optarg)+1); strcpy(poprcfile,optarg); break; case 'u': case LA_USERNAME: strncpy(options->remotename,optarg,sizeof(options->remotename)-1); break; case 'o': case LA_LOCALFILE: if (fflag) errflag++; else { fflag++; options->output = TO_FOLDER; strncpy(options->userfolder,optarg,sizeof(options->userfolder)-1); } break; case 'r': case LA_REMOTEFILE: strncpy(options->remotefolder,optarg,sizeof(options->remotefolder)-1); break; case 'm': case LA_MDA: strncpy(options->mda,optarg,sizeof(options->mda)-1); break; case 'L': case LA_LOGFILE: logfile = optarg; break; case 'q': case LA_QUIT: quitmode = 1; break; case LA_YYDEBUG: yydebug = 1; break; default: errflag++; } } if (errflag) { /* squawk if syntax errors were detected */ fputs("usage: popclient [options] [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(" -m, --mda set mail user agent to pass to\n", stderr); fputs(" -q, --quit kill daemon process\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 once per n seconds\n", stderr); fputs(" -f, --poprc specify alternate config file\n", stderr); fputs(" -u, --username specify server user ID\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); fputs(" -L, --logfile specify logfile 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); } options->protocol = DEF_PROTOCOL; #if defined(KEEP_IS_DEFAULT) options->keep = 1; #else options->keep = 0; #endif strcpy(options->localname,pw->pw_name); strcpy(options->remotename,pw->pw_name); #if defined(USERFOLDER) && defined(HAVE_FLOCK) options->output = TO_FOLDER; sprintf(options->userfolder, USERFOLDER, pw->pw_name); #else options->output = TO_MDA; #endif (void) sprintf(options->mda, DEF_MDA, options->localname); poprcfile = (char *) xmalloc(strlen(pw->pw_dir)+strlen(POPRC_NAME)+2); strcpy(poprcfile, pw->pw_dir); strcat(poprcfile, "/"); strcat(poprcfile, POPRC_NAME); outlevel = O_NORMAL; 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)++]); }