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Usenet 1994 October
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usenetsourcesnewsgroupsinfomagicoctober1994disk2.iso
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unix
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volume23
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trn
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part11
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init.c
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C/C++ Source or Header
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1991-08-22
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9KB
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384 lines
/* $Header: init.c,v 4.3.3.2 91/01/16 02:43:39 davison Trn $
*
* $Log: init.c,v $
* Revision 4.3.3.2 91/01/16 02:43:39 davison
* Integrated rn patches 48-54. Twiddled 'rn' to 'trn'.
*
* Revision 4.3.3.1 90/06/20 22:37:39 davison
* Initial Trn Release
*
* Revision 4.3.2.8 90/11/22 13:51:39 sob
* Removed some cruft trailing the #endif directive to make more compilers
* happy.
*
* Revision 4.3.2.7 90/10/30 22:42:23 sob
* Used fileno() instead of _file to increase portability.
*
* Revision 4.3.2.6 90/05/08 22:05:55 sob
* Added quick startup (-q) flag.
*
* Revision 4.3.2.5 90/05/04 23:10:01 sob
* Fix for exiting "second" rn such that tty will be left in correct state.
* Provided by glenn@mathcs.emory.edu
*
* Revision 4.3.2.4 90/03/22 23:04:32 sob
* Fixes provided by Wayne Davison <drivax!davison>
*
* Revision 4.3.2.3 90/03/17 21:34:04 sob
* Cleaned up a bit.
*
* Revision 4.3.2.2 89/11/08 01:17:48 sob
* Added changes to insure that this will compile for RN or RRN with no
* changes to the source code.
*
* Revision 4.3.2.1 89/11/06 00:39:14 sob
* Added RRN support from NNTP 1.5
*
* Revision 4.3.1.4 86/09/05 14:24:02 lwall
* Removed net.announce dependency.
*
* Revision 4.3.1.3 85/07/23 18:08:36 lwall
* Fixed up NOLINEBUF option to work.
*
* Revision 4.3.1.2 85/05/21 14:22:46 lwall
* Sped up "rn -c" by avoiding unnecessary initialization.
*
* Revision 4.3.1.1 85/05/10 11:33:39 lwall
* Branch for patches.
*
* Revision 4.3 85/05/01 16:16:13 lwall
* Baseline for release with 4.3bsd.
*
*/
#include "EXTERN.h"
#include "common.h"
#include "util.h"
#include "final.h"
#include "term.h"
#include "last.h"
#include "rn.h"
#include "rcstuff.h"
#include "ngdata.h"
#include "only.h"
#include "intrp.h"
#include "addng.h"
#include "sw.h"
#include "art.h"
#include "artsrch.h"
#include "artio.h"
#include "backpage.h"
#include "bits.h"
#include "cheat.h"
#include "head.h"
#include "help.h"
#include "kfile.h"
#include "ngsrch.h"
#include "ngstuff.h"
#include "rcln.h"
#include "respond.h"
#ifdef SERVER
#include "server.h"
#endif
#ifdef USETHREADS
#include "rthreads.h"
#endif
#include "ng.h"
#include "INTERN.h"
#include "init.h"
bool
initialize(argc,argv)
int argc;
char *argv[];
{
char *tcbuf;
register bool foundany = FALSE;
long time();
#ifdef SERVER
char *server;
int response;
#endif
#ifdef NOLINEBUF
static char std_out_buf[BUFSIZ]; /* must be static or malloced */
setbuf(stdout, std_out_buf);
#endif
tcbuf = safemalloc(1024); /* make temp buffer for termcap and */
/* other initialization stuff */
/* init terminal */
term_init(); /* must precede sw_init() so that */
/* ospeed is set for baud-rate */
/* switches. Actually terminal */
/* mode setting is in term_set() */
/* we have to know rnlib to look up global switches in %X/INIT */
lib = savestr(filexp(LIB));
rnlib = savestr(filexp(RNLIB));
/* decode switches */
sw_init(argc,argv,&tcbuf); /* must not do % interps! */
/* (but may mung environment) */
/* init signals, status flags */
final_init();
/* start up file expansion and the % interpreter */
intrp_init(tcbuf);
/* now make sure we have a current working directory */
if (!checkflag)
cwd_check();
/* now that we know where to save things, cd to news directory */
if (chdir(spool)) {
printf(nocd,spool) FLUSH;
finalize(1);
}
/* if we aren't just checking, turn off echo */
if (!checkflag)
term_set(tcbuf);
/* get info on last rn run, if any */
if (!checkflag)
last_init(tcbuf);
free(tcbuf); /* recover 1024 bytes */
/* make sure we are the sole possessors of .newsrc */
if (!checkflag)
lock_check();
/* check for news news */
if (!checkflag)
newsnews_check();
#ifdef SERVER
/* open connection to server if appropriate */
server = getserverbyfile(SERVER_FILE);
if (server == NULL) {
fprintf(stderr, "Can't get the name of the news server from %s\n",
SERVER_FILE);
fprintf(stderr,
"Either fix this file, or put NNTPSERVER in your environment.\n");
finalize(1);
}
response = server_init(server);
if (response < 0) {
fprintf(stderr,
"Couldn't connect to %s news server, try again later.\n",
server);
finalize(1);
}
if (handle_server_response(response, server) < 0)
finalize(1);
#endif
/* open active file, etc. */
ngdata_init();
/* now read in the .newsrc file */
foundany = rcstuff_init();
/* it looks like we will actually read something, so init everything */
addng_init();
art_init();
artio_init();
artsrch_init();
backpage_init();
bits_init();
cheat_init();
head_init();
help_init();
kfile_init();
ng_init();
ngsrch_init();
ngstuff_init();
only_init();
rcln_init();
respond_init();
rn_init();
search_init();
#ifdef USETHREADS
thread_init();
#endif
util_init();
#ifdef FINDNEWNG
/* fstat(actfp->_file,&filestat); ... does not work on Apollos */
fstat(fileno(actfp),&filestat); /* did active file grow? */
/*
* Skip this check if the -q flag was given.
*/
if (!quickstart && filestat.st_size != lastactsiz) {
long actsiz = filestat.st_size; /* remember new size */
NG_NUM oldnext = nextrcline; /* remember # lines in newsrc */
#ifdef FASTNEW
bool munged = writesoft || !lastactsiz;
/* bad soft ptrs -> edited active */
#else
bool munged = TRUE; /* just assume .newsrc munged */
#endif
#ifdef VERBOSE
IF(verbose)
fputs("\nChecking active list for new newsgroups...\n",stdout)
FLUSH;
ELSE
#endif
#ifdef TERSE
fputs("\nNew newsgroups:\n",stdout) FLUSH;
#endif
#ifdef FASTNEW
if (!munged) { /* maybe just do tail of file? */
fseek(actfp,lastactsiz-NL_SIZE,0);
fgets(buf,LBUFLEN,actfp);
munged = (*buf != '\n');
if (!munged)
munged = newlist(munged,FALSE);
}
#endif
if (munged) { /* must we scan entire file? */
fseek(actfp,0L,0); /* rewind active file */
newlist(munged,FALSE); /* sure hope they use hashing... */
}
lastactsiz = actsiz; /* remember for .rnlast */
if (nextrcline != oldnext) { /* did we add any new groups? */
foundany = TRUE; /* let main() know */
starthere = 0; /* and start ng scan from the top */
}
}
#endif
time(&lasttime); /* remember when we inited-- */
/* ends up back in .rnlast */
writelast(); /* in fact, put it there now */
#ifdef FINDNEWNG
# ifdef ONLY
if (maxngtodo) /* patterns on command line? */
foundany |= scanactive();
# endif
#endif
return foundany;
}
/* make sure there is no rn out there already */
void
lock_check()
{
lockname = savestr(filexp(LOCKNAME));
if (!checkflag) {
tmpfp = fopen(lockname,"r");
if (tmpfp != Nullfp) {
int processnum;
fgets(buf,LBUFLEN,tmpfp);
fclose(tmpfp);
processnum = atoi(buf);
#ifdef VERBOSE
IF(verbose)
printf("You seem to have left a trn running, process %d.\n",
processnum) FLUSH;
ELSE
#endif
#ifdef TERSE
printf("Trn left running, #%d.\n", processnum) FLUSH;
#endif
if (kill(processnum, SIGEMT)) {
/* does process not exist? */
/* (rn ignores SIGEMT) */
sleep(2);
#ifdef VERBOSE
IF(verbose)
fputs("\n\
That process does not seem to exist anymore. The count of read articles\n\
may be incorrect in the last newsgroup accessed by that other (defunct)\n\
process.\n\n",stdout) FLUSH;
ELSE
#endif
#ifdef TERSE
fputs("\nProcess crashed.\n",stdout) FLUSH;
#endif
if (*lastngname) {
#ifdef VERBOSE
IF(verbose)
printf("(The last newsgroup accessed was %s.)\n\n",
lastngname) FLUSH;
ELSE
#endif
#ifdef TERSE
printf("(In %s.)\n\n",lastngname) FLUSH;
#endif
}
get_anything();
putchar('\n') FLUSH;
}
else {
#ifdef VERBOSE
IF(verbose)
fputs("\n\
You may not have two copies of [t]rn running simultaneously. Goodbye.\n\
",stdout) FLUSH;
ELSE
#endif
#ifdef TERSE
fputs("\nCan't start another.\n",stdout) FLUSH;
#endif
if (bizarre)
resetty();
exit(0);
}
}
tmpfp = fopen(lockname,"w");
if (tmpfp == Nullfp) {
printf(cantcreate,lockname) FLUSH;
sig_catcher(0);
}
fprintf(tmpfp,"%d\n",getpid());
fclose(tmpfp);
}
}
void
newsnews_check()
{
char *newsnewsname = filexp(NEWSNEWSNAME);
if ((tmpfp = fopen(newsnewsname,"r")) != Nullfp) {
/* fstat(tmpfp->_file,&filestat); .... does not work on Apollos */
fstat(fileno(tmpfp),&filestat);
if (filestat.st_mtime > lasttime) {
while (fgets(buf,sizeof(buf),tmpfp) != Nullch)
fputs(buf,stdout) FLUSH;
get_anything();
putchar('\n') FLUSH;
}
fclose(tmpfp);
}
}