2.11BSD#431 - /usr/src/new/rn/common.h

   1: /* $Header: common.h,v 4.3.1.4 86/10/31 15:46:09 lwall Exp $
   2:  *
   3:  * $Log:	common.h,v $
   4:  * Revision 4.3.1.4  86/10/31  15:46:09  lwall
   5:  * Expanded maximum number of .newsrc lines for net reorganization.
   6:  *
   7:  * Revision 4.3.1.3  85/05/23  17:19:32  lwall
   8:  * Now allows 'r' and 'f' on null articles.
   9:  *
  10:  * Revision 4.3.1.2  85/05/13  09:30:39  lwall
  11:  * Added CUSTOMLINES option.
  12:  *
  13:  * Revision 4.3.1.1  85/05/10  11:32:04  lwall
  14:  * Branch for patches.
  15:  *
  16:  * Revision 4.3  85/05/01  11:37:11  lwall
  17:  * Baseline for release with 4.3bsd.
  18:  *
  19:  */
  20: 
  21: #include "config.h" /* generated by installation script */
  22: #ifdef WHOAMI
  23: #    include <whoami.h>
  24: #endif
  25: 
  26: #include <stdio.h>
  27: #include <sys/types.h>
  28: #include <sys/stat.h>
  29: #include <ctype.h>
  30: 
  31: #ifndef isalnum
  32: #   define isalnum(c) (isalpha(c) || isdigit(c))
  33: #endif
  34: 
  35: #include <errno.h>
  36: #include <signal.h>
  37: #ifdef IOCTL
  38: #include <sys/ioctl.h>
  39: #endif IOCTL
  40: 
  41: #ifdef FCNTL
  42: #   include <fcntl.h>
  43: #endif
  44: 
  45: #ifdef TERMIO
  46: #   include <termio.h>
  47: #else
  48: #   include <sgtty.h>
  49: #endif
  50: 
  51: #ifdef GETPWENT
  52: #   include <pwd.h>
  53: #endif
  54: 
  55: #define BITSPERBYTE 8
  56: #define LBUFLEN 512 /* line buffer length */
  57:             /* (don't worry, .newsrc lines can exceed this) */
  58: #ifdef pdp11
  59: #   define CBUFLEN 256  /* command buffer length */
  60: #   define PUSHSIZE 128
  61: #else
  62: #   define CBUFLEN 512  /* command buffer length */
  63: #   define PUSHSIZE 256
  64: #endif
  65: #ifdef pdp11
  66: #   define MAXFILENAME 128
  67: #else
  68: #   define MAXFILENAME 512
  69: #endif
  70: #define LONGKEY 15  /* longest keyword: currently "posting-version" */
  71: #define FINISHCMD 0177
  72: 
  73: /* some handy defs */
  74: 
  75: #define bool char
  76: #define TRUE (1)
  77: #define FALSE (0)
  78: #define Null(t) ((t)0)
  79: #define Nullch Null(char *)
  80: #define Nullfp Null(FILE *)
  81: 
  82: #define Ctl(ch) (ch & 037)
  83: 
  84: #define strNE(s1,s2) (strcmp(s1,s2))
  85: #define strEQ(s1,s2) (!strcmp(s1,s2))
  86: #define strnNE(s1,s2,l) (strncmp(s1,s2,l))
  87: #define strnEQ(s1,s2,l) (!strncmp(s1,s2,l))
  88: 
  89: /* Things we can figure out ourselves */
  90: 
  91: #ifdef SIGTSTP
  92: #   define BERKELEY     /* include job control signals? */
  93: #endif
  94: 
  95: #ifdef SIGPROF
  96: #   define BSD42        /* do we have Berkeley 4.2? */
  97: #endif
  98: 
  99: #ifdef FIONREAD
 100: #   define PENDING
 101: #else
 102: #   ifdef O_NDELAY
 103: #	define PENDING
 104: #   endif
 105: #endif
 106: 
 107: #ifdef EUNICE
 108: #   define LINKART      /* add 1 level of possible indirection */
 109: #   define UNLINK(victim) while (!unlink(victim))
 110: #else
 111: #   define UNLINK(victim) unlink(victim)
 112: #endif
 113: 
 114: /* Valid substitutions for strings marked with % comment are:
 115:  *	%a	Current article number
 116:  *	%A	Full name of current article (%P/%c/%a)
 117:  *		(if LINKART defined, is the name of the real article)
 118:  *	%b	Destination of a save command, a mailbox or command
 119:  *	%B	The byte offset to the beginning of the article for saves
 120:  *		with or without the header
 121:  *	%c	Current newsgroup, directory form
 122:  *	%C	Current newsgroup, dot form
 123:  *	%d	%P/%c
 124:  *	%D	Old Distribution: line
 125:  *	%f	Old From: line or Reply-To: line
 126:  *	%F	Newsgroups to followup to from Newsgroups: and Followup-To:
 127:  *	%h	Name of header file to pass to mail or news poster
 128:  *	%H	Host name (yours)
 129:  *	%i	Old Message-I.D.: line, with <>
 130:  *	%I	Inclusion indicator
 131:  *	%l	News administrator login name
 132:  *	%L	Login name (yours)
 133:  *	%M	Number of articles markd with M
 134:  *	%n	Newsgroups from source article
 135:  *	%N	Full name (yours)
 136:  *	%o	Organization (yours)
 137:  *	%O	Original working directory (where you ran rn from)
 138:  *	%p	Your private news directory (-d switch)
 139:  *	%P	Public news spool directory (SPOOLDIR)
 140:  *	%r	Last reference (parent article id)
 141:  *	%R	New references list
 142:  *	%s	Subject, with all Re's and (nf)'s stripped off
 143:  *	%S	Subject, with one Re stripped off
 144:  *	%t	New To: line derived from From: and Reply-To (Internet always)
 145:  *	%T	New To: line derived from Path:
 146:  *	%u	Number of unread articles
 147:  *	%U	Number of unread articles disregarding current article
 148:  *	%x	News library directory, usually /usr/lib/news
 149:  *	%X	Rn library directory, usually %x/rn
 150:  *	%z	Size of current article in bytes.
 151:  *	%~	Home directory
 152:  *	%.	Directory containing . files
 153:  *	%$	current process number
 154:  *	%{name} Environment variable "name".  %{name-default} form allowed.
 155:  *	%[name]	Header line beginning with "Name: ", without "Name: "
 156:  *	%"prompt"
 157:  *		Print prompt and insert what is typed.
 158:  *	%`command`
 159:  *		Insert output of command.
 160:  *	%(test_text=pattern?if_text:else_text)
 161:  *		Substitute if_text if test_text matches pattern, otherwise
 162:  *		substitute else_text.  Use != for negated match.
 163:  *		% substitutions are done on test_text, if_text, and else_text.
 164:  *		(Note: %() only works if CONDSUB defined.)
 165:  *	%digit	Substitute the text matched by the nth bracket in the last
 166:  *		pattern that had brackets.  %0 matches the last bracket
 167:  *		matched, in case you had alternatives.
 168:  *
 169:  *	Put ^ in the middle to capitalize the first letter: %^C = Net.jokes
 170:  *	Put _ in the middle to capitalize last component: %_c = net/Jokes
 171:  *
 172:  *	~ interpretation in filename expansion happens after % expansion, so
 173:  *	you could put ~%{NEWSLOGNAME-news} and it will expand correctly.
 174:  */
 175: 
 176: /* *** System Dependent Stuff *** */
 177: 
 178: /* NOTE: many of these are defined in the config.h file */
 179: 
 180: /* name of organization */
 181: #ifndef ORGNAME
 182: #   define ORGNAME "ACME Widget Company, Widget Falls, Southern North Dakota"
 183: #endif
 184: 
 185: #ifndef MBOXCHAR
 186: #   define MBOXCHAR 'F' /* how to recognize a mailbox by 1st char */
 187: #endif
 188: 
 189: #ifndef ROOTID
 190: #   define ROOTID 0        /* uid of superuser */
 191: #endif
 192: 
 193: #ifdef NORMSIG
 194: #   define sigset signal
 195: #   define sigignore(sig) signal(sig,SIG_IGN)
 196: #endif
 197: 
 198: #ifndef LOGDIRFIELD
 199: #   define LOGDIRFIELD 6        /* Which field (origin 1) is the */
 200:                     /* login directory in /etc/passwd? */
 201:                     /* (If it is not kept in passwd, */
 202:                     /* but getpwnam() returns it, */
 203:                     /* define the symbol GETPWENT) */
 204: #endif
 205: #ifndef GCOSFIELD
 206: #   define GCOSFIELD 5
 207: #endif
 208: 
 209: #ifndef NEGCHAR
 210: #   define NEGCHAR '!'
 211: #endif
 212: 
 213: /* Space conservation section */
 214: 
 215: /* To save D space, cut down size of MAXRCLINE, NGMAX, VARYSIZE. */
 216: #define MAXRCLINE 900   /* number of lines allowed in .newsrc */
 217:             /* several parallel arrays affected. */
 218:             /* (You can have more lines in the active file, */
 219:             /* just not in the .newsrc) */
 220: #define HASHSIZ 991 /* should be prime, and at least MAXRCLINE + 10% */
 221: #define NGMAX 10    /* number of newsgroups allowed on command line -10*/
 222:             /* undefine ONLY symbol to disable "only" feature */
 223: #define VARYSIZE 128    /* this makes a block 1024 bytes long in DECville */
 224:             /* this makes a block 512 bytes long in DECville */
 225:             /* (used by virtual array routines) */
 226: 
 227: /* Undefine any of the following features to save both I and D space */
 228: /* In general, earlier ones are easier to get along without */
 229: /* Pdp11's without split I and D may have to undefine them all */
 230: /* #define DEBUGGING	/* include debugging code */
 231: /* #define CUSTOMLINES	/* include code for HIDELINE and PAGESTOP */
 232: /* #define PUSHBACK	/* macros and keymaps using pushback buffer */
 233: /* #define SPEEDOVERMEM	/* use more memory to run faster */
 234: #define WORDERASE   /* enable ^W to erase a word */
 235: #define MAILCALL    /* check periodically for mail */
 236: #define CLEAREOL    /* use clear to end-of-line instead of clear screen */
 237: #define NOFIREWORKS /* keep whole screen from flashing on certain */
 238:             /* terminals such as older Televideos */
 239: #define VERIFY      /* echo the command they just typed */
 240: #undef HASHNG       /* hash newsgroup lines for fast lookup-- */
 241:             /* linear search used if not defined */
 242: #define CONDSUB     /* allow %(cond?text:text) */
 243: #define BACKTICK    /* allow %`command` */
 244: #define PROMPTTTY   /* allow %"prompt" */
 245: #define ULSMARTS    /* catch _^H in text and do underlining */
 246: #define TERMMOD     /* allow terminal type modifier on switches */
 247: /* #define BAUDMOD	/* allow baudrate modifier on switches */
 248: #define GETLOGIN    /* use getlogin() routine as backup to environment */
 249:             /* variables USER or LOGNAME */
 250: #define ORGFILE     /* if organization begins with /, look up in file */
 251: #define TILDENAME   /* allow ~logname expansion */
 252: #define SETENV      /* allow command line environment variable setting */
 253: #define GETWD       /* use our getwd() instead of piped in pwd */
 254: #ifndef BSD42       /* 4.2 sites should just use groups for this */
 255: #define SETUIDGID   /* substitute eaccess() for access() so that rn */
 256:             /* can run setuid or setgid */
 257:             /* if not setuid or setgid, you don't need it */
 258: #endif
 259: #define MAKEDIR     /* use our makedir() instead of shell script */
 260: /* #define MEMHELP	/* keep help messages in memory */
 261: /* #define VERBOSE		/* compile in more informative messages */
 262: #define TERSE       /* compile in shorter messages */
 263:             /* (Note: both VERBOSE and TERSE can be defined; -t
 264: 			 * sets terse mode.  One or the other MUST be defined.
 265: 			 */
 266: #ifndef pdp11
 267: #   define CACHESUBJ    /* cache subject lines in memory */
 268:             /* without this ^N still works but runs really slow */
 269:             /* but you save lots and lots of D space */
 270: #   define CACHEFIRST   /* keep absolute first article numbers in memory */
 271:             /* cost: about 2k */
 272: #endif
 273: #define ROTATION    /* enable x, X and ^X commands to work */
 274: #define DELBOGUS    /* ask if bogus newsgroups should be deleted */
 275: #define RELOCATE    /* allow newsgroup rearranging */
 276: #define ESCSUBS     /* escape substitutions in multi-character commands */
 277: #define DELAYMARK   /* allow articles to be temporarily marked as read */
 278:             /* until exit from current newsgroup or Y command */
 279: #define MCHASE      /* unmark xrefed articles on m or M */
 280: #define MUNGHEADER  /* allow alternate header formatting via */
 281:             /* environment variable ALTHEADER (not impl) */
 282: #define ASYNC_PARSE /* allow parsing headers asyncronously to reading */
 283:             /* used by MCHASE and MUNGHEADER */
 284: #define FINDNEWNG   /* check for new newsgroups on startup */
 285: #undef FASTNEW      /* do optimizations on FINDNEWNG for faster startup */
 286:             /* (this optimization can make occasional mistakes */
 287:             /* if a group is removed and another group of the */
 288:             /* same length is added, and if no softpointers are */
 289:             /* affected by said change.) */
 290: #define INNERSEARCH /* search command 'g' with article */
 291: #define CATCHUP     /* catchup command at newsgroup level */
 292: #define NGSEARCH    /* newsgroup pattern matching */
 293: #define ONLY        /* newsgroup restrictions by pattern */
 294: #define KILLFILES   /* automatic article killer files */
 295: #define ARTSEARCH   /* pattern searches among articles */
 296:             /* /, ?, ^N, ^P, k, K */
 297: 
 298: /* some dependencies among options */
 299: 
 300: #ifndef ARTSEARCH
 301: #   undef KILLFILES
 302: #   undef INNERSEARCH
 303: #   undef CACHESUBJ
 304: #endif
 305: 
 306: #ifndef DELAYMARK
 307: #   ifndef MCHASE
 308: #	ifndef MUNGHEADER
 309: #	    undef ASYNC_PARSE
 310: #	endif
 311: #   endif
 312: #endif
 313: 
 314: #ifndef SETUIDGID
 315: #   define eaccess access
 316: #endif
 317: 
 318: #ifdef ONLY             /* idiot lint doesn't grok #if */
 319: #   define NGSORONLY
 320: #else
 321: #   ifdef NGSEARCH
 322: #	define NGSORONLY
 323: #   endif
 324: #endif
 325: 
 326: #ifdef VERBOSE
 327: #   ifdef TERSE
 328: #	define IF(c) if (c)
 329: #	define ELSE else
 330: #   else !TERSE
 331: #	define IF(c)
 332: #	define ELSE
 333: #   endif
 334: #else !VERBOSE
 335: #   ifndef TERSE
 336: #	define TERSE
 337: #   endif
 338: #   define IF(c) "IF" outside of VERBOSE???
 339: #   define ELSE "ELSE" outside of VERBOSE???
 340: #endif
 341: 
 342: #ifdef DEBUGGING
 343: #   define assert(ex) {if (!(ex)){fprintf(stderr,"Assertion failed: file %s, line %d\n", __FILE__, __LINE__);sig_catcher(0);}}
 344: #else
 345: #   define assert(ex) ;
 346: #endif
 347: 
 348: #ifdef SPEEDOVERMEM
 349: #   define OFFSET(x) (x)
 350: #else
 351: #   define OFFSET(x) ((x)-absfirst)
 352: #endif
 353: 
 354: /* If you're strapped for space use the help messages in shell scripts */
 355: /* if {NG,ART,PAGER,SUBS}HELP is undefined, help messages are in memory */
 356: #ifdef MEMHELP  /* undef MEMHELP above to get them all as sh scripts */
 357: #   undef NGHELP
 358: #   undef ARTHELP
 359: #   undef PAGERHELP
 360: #   undef SUBSHELP
 361: #else
 362: #   ifndef NGHELP           /* % and ~ */
 363: #	define NGHELP "%X/ng.help"
 364: #   endif
 365: #   ifndef ARTHELP          /* % and ~ */
 366: #	define ARTHELP "%X/art.help"
 367: #   endif
 368: #   ifndef PAGERHELP        /* % and ~ */
 369: #	define PAGERHELP "%X/pager.help"
 370: #   endif
 371: #   ifndef SUBSHELP     /* % and ~ */
 372: #	define SUBSHELP "%X/subs.help"
 373: #   endif
 374: #endif
 375: 
 376: #ifdef CLEAREOL
 377: #   define TCSIZE 512   /* capacity for termcap strings */
 378: #else
 379: #   ifdef pdp11
 380: #	define TCSIZE 256 /* capacity for termcap strings */
 381: #   else
 382: #	define TCSIZE 512 /* capacity for termcap srings */
 383: #   endif
 384: #endif
 385: 
 386: /* Additional ideas:
 387:  *	Make the do_newsgroup() routine a separate process.
 388:  *	Keep .newsrc on disk instead of in memory.
 389:  *	Overlays, if you have them.
 390:  *	Get a bigger machine.
 391:  */
 392: 
 393: /* End of Space Conservation Section */
 394: 
 395: /* More System Dependencies */
 396: 
 397: /* news library */
 398: #ifndef LIB     /* ~ and %l only ("~%l" is permissable) */
 399: #   define LIB "/usr/lib/news"
 400: #endif
 401: 
 402: /* path to private executables */
 403: #ifndef RNLIB       /* ~, %x and %l only */
 404: #   define RNLIB "%x/rn"
 405: #endif
 406: 
 407: /* system-wide RNINIT switches */
 408: #ifndef GLOBINIT
 409: #   define GLOBINIT "%X/INIT"
 410: #endif
 411: 
 412: /* where to find news files */
 413: #ifndef SPOOL           /* % and ~ */
 414: #   define SPOOL "/usr/spool/news"
 415: #endif
 416: 
 417: /* file containing list of active newsgroups and max article numbers */
 418: #ifndef ACTIVE          /* % and ~ */
 419: #   define ACTIVE "%x/active"
 420: #endif
 421: 
 422: /* location of history file */
 423: #ifndef ARTFILE         /* % and ~ */
 424: #    define ARTFILE "%x/history"
 425: #endif
 426: 
 427: /* command to setup a new .newsrc */
 428: #ifndef NEWSETUP        /* % and ~ */
 429: #   define NEWSETUP "newsetup"
 430: #endif
 431: 
 432: /* command to display a list of un-subscribed-to newsgroups */
 433: #ifndef NEWSGROUPS      /* % and ~ */
 434: #   define NEWSGROUPS "newsgroups"
 435: #endif
 436: 
 437: /* preferred shell for use in doshell routine */
 438: /*  ksh or sh would be okay here */
 439: #ifndef PREFSHELL
 440: #   define PREFSHELL "/bin/csh"
 441: #endif
 442: 
 443: /* path to fastest starting shell */
 444: #ifndef SH
 445: #   define SH "/bin/sh"
 446: #endif
 447: 
 448: /* path to default editor */
 449: #ifndef DEFEDITOR
 450: #   define DEFEDITOR "/usr/ucb/vi"
 451: #endif
 452: 
 453: /* location of macro file */
 454: #ifndef RNMACRO
 455: #   ifdef PUSHBACK
 456: #	define RNMACRO "%./.rnmac"
 457: #   endif
 458: #endif
 459: 
 460: /* location of full name */
 461: #ifndef FULLNAMEFILE
 462: #   ifndef PASSNAMES
 463: #	define FULLNAMEFILE "%./.fullname"
 464: #   endif
 465: #endif
 466: 
 467: /* virtual array file name template */
 468: #ifndef VARYNAME        /* % and ~ */
 469: #   define VARYNAME "/tmp/rnvary.%$"
 470: #endif
 471: 
 472: /* file to pass header to followup article poster */
 473: #ifndef HEADNAME        /* % and ~ */
 474: #   define HEADNAME "%./.rnhead"
 475: /* or alternately #define HEADNAME "/tmp/rnhead.%$" */
 476: #endif
 477: 
 478: #ifndef MAKEDIR
 479: /* shell script to make n-deep subdirectories */
 480: #   ifndef DIRMAKER     /* % and ~ */
 481: #	define DIRMAKER "%X/makedir"
 482: #   endif
 483: #endif
 484: 
 485: /* location of newsrc file */
 486: #ifndef RCNAME      /* % and ~ */
 487: #   define RCNAME "%./.newsrc"
 488: #endif
 489: 
 490: /* temporary newsrc file in case we crash while writing out */
 491: #ifndef RCTNAME     /* % and ~ */
 492: #   define RCTNAME "%./.newnewsrc"
 493: #endif
 494: 
 495: /* newsrc file at the beginning of this session */
 496: #ifndef RCBNAME     /* % and ~ */
 497: #   define RCBNAME "%./.oldnewsrc"
 498: #endif
 499: 
 500: /* if existent, contains process number of current or crashed rn */
 501: #ifndef LOCKNAME        /* % and ~ */
 502: #   define LOCKNAME "%./.rnlock"
 503: #endif
 504: 
 505: /* information from last invocation of rn */
 506: #ifndef LASTNAME        /* % and ~ */
 507: #   define LASTNAME "%./.rnlast"
 508: #endif
 509: 
 510: /* file with soft pointers into the active file */
 511: #ifndef SOFTNAME        /* % and ~ */
 512: #   define SOFTNAME "%./.rnsoft"
 513: #endif
 514: 
 515: /* list of article numbers to mark as unread later (see M and Y cmmands) */
 516: #ifndef RNDELNAME       /* % and ~ */
 517: #   define RNDELNAME "%./.rndelay"
 518: #endif
 519: 
 520: /* a motd-like file for rn */
 521: #ifndef NEWSNEWSNAME        /* % and ~ */
 522: #   define NEWSNEWSNAME "%X/newsnews"
 523: #endif
 524: 
 525: /* command to send a reply */
 526: #ifndef MAILPOSTER      /* % and ~ */
 527: #   define MAILPOSTER "Rnmail -h %h"
 528: #endif
 529: 
 530: #ifdef INTERNET
 531: #   ifndef MAILHEADER       /* % */
 532: #	ifdef CONDSUB
 533: #	    define MAILHEADER "To: %t\nSubject: Re: %S\nNewsgroups: %n\nIn-Reply-To: %i\n%(%[references]!=^$?References\\: %[references]\n)Organization: %o\nCc: \nBcc: \n\n"
 534: #	else
 535: #	    define MAILHEADER "To: %t\nSubject: Re: %S\nNewsgroups: %n\nIn-Reply-To: %i\nReferences: %[references]\nCc: \nBcc: \n\n"
 536: #	endif
 537: #   endif
 538: #else
 539: #   ifndef MAILHEADER       /* % */
 540: #	ifdef CONDSUB
 541: #	    define MAILHEADER "To: %T\nSubject: %(%i=^$?:Re: %S\nNewsgroups: %n\nIn-Reply-To: %i)\n%(%[references]!=^$?References\\: %[references]\n)Organization: %o\nCc: \nBcc: \n\n"
 542: #	else
 543: #	    define MAILHEADER "To: %T\nSubject: Re: %S\nNewsgroups: %n\nIn-Reply-To: %i\nReferences: %[references]\nCc: \nBcc: \n\n"
 544: #	endif
 545: #   endif
 546: #endif
 547: 
 548: #ifndef YOUSAID         /* % */
 549: #   define YOUSAID "In article %i you write:"
 550: #endif
 551: 
 552: /* command to submit a followup article */
 553: #ifndef NEWSPOSTER      /* % and ~ */
 554: #   define NEWSPOSTER "Pnews -h %h"
 555: #endif
 556: 
 557: #ifndef NEWSHEADER      /* % */
 558: #   ifdef CONDSUB
 559: #	define NEWSHEADER "Newsgroups: %(%F=^$?%C:%F)\nSubject: %(%S=^$?%\"\n\nSubject: \":Re: %S)\nSummary: \nExpires: \n%(%R=^$?:References: %R\n)Sender: \nReply-To: %L@%H.UUCP (%N)\nFollowup-To: \nDistribution: %(%i=^$?%\"Distribution: \":%D)\nOrganization: %o\nKeywords: %[keywords]\n\n"
 560: #   else
 561: #	define NEWSHEADER "Newsgroups: %F\nSubject: Re: %S\nSummary: \nExpires: \nReferences: %R\nSender: \nReply-To: %L@%H.UUCP (%N)\nFollowup-To: \nDistribution: %D\nOrganization: %o\nKeywords: %[keywords]\n\n"
 562: #   endif
 563: #endif
 564: 
 565: #ifndef ATTRIBUTION     /* % */
 566: #   define ATTRIBUTION "In article %i %f writes:"
 567: #endif
 568: 
 569: #ifndef PIPESAVER       /* % */
 570: #   ifdef CONDSUB
 571: #       ifdef SERVER
 572: #               define PIPESAVER "%(%B=^0$?<%P/rrn%a.%$:tail +%Bc %P/rrn%a.%$ |) %b"
 573: #       else
 574: #		define PIPESAVER "%(%B=^0$?<%A:tail +%Bc %A |) %b"
 575: #	endif
 576: #   else
 577: #       ifdef SERVER
 578: #               define PIPESAVER "tail +%Bc %P/rrn%a.%$ | %b"
 579: #       else
 580: #		define PIPESAVER "tail +%Bc %A | %b"
 581: #	endif
 582: #   endif
 583: #endif
 584: 
 585: #ifndef NORMSAVER       /* % and ~ */
 586: #    ifdef SERVER
 587: #	define NORMSAVER "%X/norm.saver %P/rrn%a.%$ %P %c %a %B %C \"%b\""
 588: #    else
 589: #   	define NORMSAVER "%X/norm.saver %A %P %c %a %B %C \"%b\""
 590: #    endif
 591: #endif
 592: 
 593: #ifndef MBOXSAVER       /* % and ~ */
 594: #   ifdef MININACT      /* 2.10.2 site? */
 595: #       ifdef SERVER
 596: #           define MBOXSAVER "%X/mbox.saver %P/rrn%a.%$ %P %c %a %B %C \"%b\" \"From %T %`date`\""
 597: #       else
 598: #	    define MBOXSAVER "%X/mbox.saver %A %P %c %a %B %C \"%b\" \"From %T %`date`\""
 599: #	endif SERVER
 600: #   else
 601: #	ifdef CONDSUB
 602: #           ifdef SERVER
 603: #               define MBOXSAVER "%X/mbox.saver %P/rrn%a.%$ %P %c %a %B %C \"%b\
 604: " \"From %T %(%[date]=^\\(\\w*\\), \\(\\w*\\)-\\(\\w*\\)-\\(\\w*\\) \\([^ ]*\\)?
 605: %1 %3 %(%2=..?%2: %2) %5 19%4)\""
 606: #           else
 607: #	        define MBOXSAVER "%X/mbox.saver %A %P %c %a %B %C \"%b\" \"From %T %(%[date]=^\\(\\w*\\), \\(\\w*\\)-\\(\\w*\\)-\\(\\w*\\) \\([^ ]*\\)?%1 %3 %(%2=..?%2: %2) %5 19%4)\""
 608: #	    endif
 609:                     /* header munging with a vengeance */
 610: #	else
 611: #           ifdef SERVER
 612: #               define MBOXSAVER "%X/mbox.saver %P/rrn%a.%$ %P %c %a %B %C \"%b\" \"From %T %[posted]\""
 613: #           else
 614: #	        define MBOXSAVER "%X/mbox.saver %A %P %c %a %B %C \"%b\" \"From %T %[posted]\""
 615: #	    endif
 616: #	endif
 617: #   endif
 618: #endif
 619: 
 620: #ifdef MKDIRS
 621: 
 622: #   ifndef SAVEDIR          /* % and ~ */
 623: #	define SAVEDIR "%p/%c"
 624: #   endif
 625: #   ifndef SAVENAME     /* % */
 626: #	define SAVENAME "%a"
 627: #   endif
 628: 
 629: #else
 630: 
 631: #   ifndef SAVEDIR          /* % and ~ */
 632: #	define SAVEDIR "%p"
 633: #   endif
 634: #   ifndef SAVENAME     /* % */
 635: #	define SAVENAME "%^C"
 636: #   endif
 637: 
 638: #endif
 639: 
 640: #ifndef KILLGLOBAL      /* % and ~ */
 641: #   define KILLGLOBAL "%p/KILL"
 642: #endif
 643: 
 644: #ifndef KILLLOCAL       /* % and ~ */
 645: #   define KILLLOCAL "%p/%c/KILL"
 646: #endif
 647: 
 648: /* how to cancel an article */
 649: #ifndef CANCEL
 650: #   ifdef MININACT          /* 2.10.2 ? */
 651: #	define CANCEL "%x/inews -h < %h"
 652: #   else
 653: #	define CANCEL "inews -h < %h"
 654: #   endif
 655: #endif
 656: 
 657: /* how to cancel an article, continued */
 658: #ifndef CANCELHEADER
 659: #   define CANCELHEADER "Newsgroups: %n\nSubject: cmsg cancel %i\nReferences: %R\nReply-To: %L@%H.UUCP (%N)\nDistribution: %D\nOrganization: %o\n"
 660: #endif
 661: 
 662: /* where to find the mail file */
 663: #ifndef MAILFILE
 664: #   define MAILFILE "/usr/spool/mail/%L"
 665: #endif
 666: 
 667: /* some important types */
 668: 
 669: typedef int     NG_NUM;     /* newsgroup number */
 670: typedef long        ART_NUM;    /* article number */
 671: #ifdef pdp11
 672:     typedef short   ART_UNREAD; /* ordinarily this should be long */
 673:                     /* like ART_NUM, but assuming that */
 674:                     /* we stay less than 32767 articles */
 675:                     /* behind saves a lot of space. */
 676:                     /* NOTE: do not make unsigned. */
 677: #else
 678:     typedef long    ART_UNREAD;
 679: #endif
 680: typedef long        ART_POS;    /* char position in article file */
 681: typedef int     ART_LINE;   /* line position in article file */
 682: /* following was short until 6/9/92 */
 683: typedef long        ACT_POS;    /* char position in active file */
 684: typedef unsigned int    MEM_SIZE;   /* for passing to malloc */
 685: 
 686: /* *** end of the machine dependent stuff *** */
 687: 
 688: /* GLOBAL THINGS */
 689: 
 690: /* file statistics area */
 691: 
 692: EXT struct stat filestat;
 693: 
 694: /* various things of type char */
 695: 
 696: char    *index();
 697: char    *rindex();
 698: char    *getenv();
 699: char    *strcat();
 700: char    *strcpy();
 701: char    *sprintf();
 702: 
 703: EXT char buf[LBUFLEN+1];    /* general purpose line buffer */
 704: EXT char cmd_buf[CBUFLEN];  /* buffer for formatting system commands */
 705: 
 706: EXT char *indstr INIT(">"); /* indent for old article embedded in followup */
 707: 
 708: EXT char *cwd INIT(Nullch);     /* current working directory */
 709: EXT char *dfltcmd INIT(Nullch); /* 1st char is default command */
 710: 
 711: /* switches */
 712: 
 713: #ifdef DEBUGGING
 714:     EXT int debug INIT(0);              /* -D */
 715: #   define DEB_INNERSRCH 32
 716: #   define DEB_FILEXP 64
 717: #   define DEB_HASH 128
 718: #   define DEB_XREF_MARKER 256
 719: #   define DEB_CTLAREA_BITMAP 512
 720: #   define DEB_SOFT_POINTERS 1024
 721: #   define DEB_NEWSRC_LINE 2048
 722: #   define DEB_SEARCH_AHEAD 4096
 723: #   define DEB_CHECKPOINTING 8192
 724: #   define DEB_FEED_XREF 16384
 725: #endif
 726: 
 727: #ifdef ARTSEARCH
 728:     EXT int scanon INIT(0);             /* -S */
 729: #endif
 730: 
 731: EXT bool mbox_always INIT(FALSE);           /* -M */
 732: EXT bool norm_always INIT(FALSE);           /* -N */
 733: EXT bool checkflag INIT(FALSE);         /* -c */
 734: EXT bool suppress_cn INIT(FALSE);           /* -s */
 735: EXT int countdown INIT(5);  /* how many lines to list before invoking -s */
 736: EXT bool muck_up_clear INIT(FALSE);         /* -loco */
 737: EXT bool erase_screen INIT(FALSE);          /* -e */
 738: #ifdef CLEAREOL
 739: EXT bool can_home_clear INIT(FALSE);        /* fancy -e -- PWP */
 740: #endif CLEAREOL
 741: EXT bool findlast INIT(FALSE);          /* -r */
 742: EXT bool typeahead INIT(FALSE);         /* -T */
 743: #ifdef VERBOSE
 744: #   ifdef TERSE
 745:     EXT bool verbose INIT(TRUE);            /* +t */
 746: #   endif
 747: #endif
 748: #ifdef VERIFY
 749:     EXT bool verify INIT(FALSE);            /* -v */
 750: #endif
 751: 
 752: #define NOMARKING 0
 753: #define STANDOUT 1
 754: #define UNDERLINE 2
 755: EXT int marking INIT(NOMARKING);            /* -m */
 756: 
 757: EXT ART_LINE initlines INIT(0);     /* -i */
 758: 
 759: /* miscellania */
 760: 
 761: long atol(), fseek(), ftell();
 762: EXT bool in_ng INIT(FALSE);     /* current state of rn */
 763: EXT char mode INIT('i');        /* current state of rn */
 764: 
 765: EXT FILE *tmpfp INIT(Nullfp);   /* scratch fp used for .rnlock, .rnlast, etc. */
 766: 
 767: EXT NG_NUM nextrcline INIT(0);  /* 1st unused slot in rcline array */
 768:             /* startup to avoid checking twice in a row */
 769: 
 770: extern errno;
 771: 
 772: /* Factored strings */
 773: 
 774: EXT char nullstr[] INIT("");
 775: EXT char sh[] INIT(SH);
 776: EXT char defeditor[] INIT(DEFEDITOR);
 777: EXT char hforhelp[] INIT("Type h for help.\n");
 778: #ifdef STRICTCR
 779: EXT char badcr[] INIT("\nUnnecessary CR ignored.\n");
 780: #endif
 781: EXT char readerr[] INIT("rn read error");
 782: EXT char unsubto[] INIT("\n\nUnsubscribed to newsgroup %s\n");
 783: EXT char cantopen[] INIT("Can't open %s\n");
 784: EXT char cantcreate[] INIT("Can't create %s\n");
 785: 
 786: #ifdef VERBOSE
 787:     EXT char nocd[] INIT("Can't chdir to directory %s\n");
 788: #else
 789:     EXT char nocd[] INIT("Can't find %s\n");
 790: #endif
 791: 
 792: #ifdef NOLINEBUF
 793: #define FLUSH ,fflush(stdout)
 794: #else
 795: #define FLUSH
 796: #endif
 797: 
 798: #ifdef lint
 799: #undef FLUSH
 800: #define FLUSH
 801: #undef putchar
 802: #define putchar(c)
 803: #endif

Defined variables

Defined typedef's

Defined macros

Usage of this include