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deb-mbse/mbfido/scannews.c
Michiel Broek c71ca269b8 Small updates, remarks
2002-08-28 19:49:24 +00:00

539 lines
12 KiB
C
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/*****************************************************************************
*
* $Id$
* Purpose ...............: Scan for new News
*
*****************************************************************************
* Copyright (C) 1997-2002
*
* Michiel Broek FIDO: 2:280/2802
* Beekmansbos 10
* 1971 BV IJmuiden
* the Netherlands
*
* This file is part of MBSE BBS.
*
* This BBS is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2, or (at your option) any
* later version.
*
* MBSE BBS is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with MBSE BBS; see the file COPYING. If not, write to the Free
* Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*****************************************************************************/
#include "../config.h"
#include "../lib/libs.h"
#include "../lib/memwatch.h"
#include "../lib/structs.h"
#include "../lib/users.h"
#include "../lib/records.h"
#include "../lib/common.h"
#include "../lib/clcomm.h"
#include "../lib/mbinet.h"
#include "../lib/dbdupe.h"
#include "../lib/dbnode.h"
#include "../lib/dbmsgs.h"
#include "../lib/msg.h"
#include "../lib/msgtext.h"
#include "mkftnhdr.h"
#include "hash.h"
#include "rollover.h"
#include "storeecho.h"
#include "rfc2ftn.h"
#include "scannews.h"
#define MAXHDRSIZE 2048
#define MAXSEEN 70
#define MAXPATH 73
/*
* Global variables
*/
POverview xoverview = NULL;
int marker = 0;
/*
* External variables
*/
extern int do_quiet;
extern int do_learn;
extern int most_debug;
extern int news_in;
extern int news_imp;
extern int news_dupe;
extern int echo_out;
extern int echo_in;
extern int do_flush;
extern char *replyaddr;
/*
* Internal functions
*/
int do_one_group(List **, char *, char *, int);
int get_xover(char *, long, long, List **);
int get_xoverview(void);
void tidy_artlist(List **);
void fill_artlist(List **, char *, long, int);
void Marker(void);
int get_article(char *, char *);
void tidy_artlist(List **fdp)
{
List *tmp, *old;
for (tmp = *fdp; tmp; tmp = old) {
old = tmp->next;
free(tmp);
}
*fdp = NULL;
}
/*
* Add article to the list
*/
void fill_artlist(List **fdp, char *id, long nr, int dupe)
{
List **tmp;
Syslog('N', "Fill %s %ld %s", id, nr, dupe ? "Dupe":"New msg");
for (tmp = fdp; *tmp; tmp = &((*tmp)->next));
*tmp = (List *)malloc(sizeof(List));
(*tmp)->next = NULL;
sprintf((*tmp)->msgid, "%s", id);
(*tmp)->nr = nr;
(*tmp)->isdupe = dupe;
}
void Marker(void)
{
if (do_quiet)
return;
switch (marker) {
case 0: printf(">---");
break;
case 1: printf(">>--");
break;
case 2: printf(">>>-");
break;
case 3: printf(">>>>");
break;
case 4: printf("<>>>");
break;
case 5: printf("<<>>");
break;
case 6: printf("<<<>");
break;
case 7: printf("<<<<");
break;
case 8: printf("-<<<");
break;
case 9: printf("--<<");
break;
case 10:printf("---<");
break;
case 11:printf("----");
break;
}
printf("\b\b\b\b");
fflush(stdout);
if (marker < 11)
marker++;
else
marker = 0;
}
/*
* Scan for new news available at the nntp server.
*/
void ScanNews(void)
{
List *art = NULL;
POverview tmp, old;
FILE *pAreas;
char *sAreas;
struct msgareashdr Msgshdr;
struct msgareas Msgs;
most_debug = TRUE;
IsDoing((char *)"Scan News");
if (nntp_connect() == -1) {
WriteError("Can't connect to newsserver");
most_debug = FALSE;
return;
}
if (get_xoverview()) {
most_debug = FALSE;
return;
}
if (!do_quiet) {
colour(10, 0);
printf("Scan for new news articles\n");
}
sAreas = calloc(PATH_MAX, sizeof(char));
sprintf(sAreas, "%s/etc/mareas.data", getenv("MBSE_ROOT"));
if(( pAreas = fopen (sAreas, "r")) == NULL) {
WriteError("$Can't open Messages Areas File.");
return;
}
fread(&Msgshdr, sizeof(Msgshdr), 1, pAreas);
while (fread(&Msgs, Msgshdr.recsize, 1, pAreas) == 1) {
fseek(pAreas, Msgshdr.syssize, SEEK_CUR);
if ((Msgs.Active) && strlen(Msgs.Newsgroup)) {
if (IsSema((char *)"upsalarm")) {
Syslog('+', "Detected upsalarm semafore, aborting newsscan");
break;
}
Syslog('n', "Scan newsgroup: %s", Msgs.Newsgroup);
if (!do_quiet) {
colour(3, 0);
printf("\r%-40s", Msgs.Newsgroup);
fflush(stdout);
}
Nopper();
if (do_one_group(&art, Msgs.Newsgroup, Msgs.Tag, Msgs.MaxArticles) == RETVAL_ERROR)
break;
/*
* To be safe, update the dupes database after each area.
*/
CloseDupes();
}
}
fclose(pAreas);
free(sAreas);
for (tmp = xoverview; tmp; tmp = old) {
old = tmp->next;
if (tmp->header)
free(tmp->header);
if (tmp->field)
free(tmp->field);
free(tmp);
}
do_flush = TRUE;
most_debug = FALSE;
if (!do_quiet)
printf("\r \r");
}
int do_one_group(List **art, char *grpname, char *ftntag, int maxarticles)
{
List *tmp;
char temp[128], *resp;
int retval, fetched = 0;
long total, start, end;
Syslog('N', "do_one_group(%s, %s)", grpname, ftntag);
IsDoing((char *)"Scan %s", grpname);
sprintf(temp, "GROUP %s\r\n", grpname);
nntp_send(temp);
resp = nntp_receive();
retval = atoi(strtok(resp, " "));
if (retval != 211) {
if (retval == 411) {
WriteError("No such newsgroup: %s", grpname);
return RETVAL_UNEXPECTEDANS;
}
WriteError("Unknown response %d to GROUP command", retval);
return RETVAL_ERROR;
}
total = atol(strtok(NULL, " "));
start = atol(strtok(NULL, " "));
end = atol(strtok(NULL, " '\0'"));
Syslog('n', "GROUP total %d, start %d, end %d, max %d", total, start, end, maxarticles);
if ((maxarticles) && (total > maxarticles)) {
start = end - maxarticles;
total = maxarticles;
Syslog('n', "NEW: total %d, start %d, end %d", total, start, end);
}
if (!total) {
Syslog('N', "No articles");
return RETVAL_NOARTICLES;
}
retval = get_xover(grpname, start, end, art);
if (retval != RETVAL_OK) {
tidy_artlist(art);
return retval;
}
if (!do_learn) {
for (tmp = *art; tmp; tmp = tmp->next) {
if (!tmp->isdupe) {
/*
* If the message isn't a dupe, it must be new for us.
*/
// most_debug = TRUE;
get_article(tmp->msgid, ftntag);
// most_debug = FALSE;
fetched++;
}
}
}
tidy_artlist(art);
if ((maxarticles) && (fetched == maxarticles))
Syslog('!', "Warning: the max. articles value in newsgroup %s might be to low", grpname);
return RETVAL_OK;
}
int get_article(char *msgid, char *ftntag)
{
char cmd[81], *resp;
int retval, done = FALSE;
FILE *fp = NULL, *dp;
char dpath[PATH_MAX];
Syslog('n', "Get article %s, %s", msgid, ftntag);
if (!SearchMsgs(ftntag)) {
WriteError("Search message area %s failed", ftntag);
return RETVAL_ERROR;
}
sprintf(dpath, "%s/tmp/scannews.last", getenv("MBSE_ROOT"));
dp = fopen(dpath, "w");
IsDoing("Article %d", (news_in + 1));
sprintf(cmd, "ARTICLE %s\r\n", msgid);
fprintf(dp, "ARTICLE %s\n", msgid);
nntp_send(cmd);
resp = nntp_receive();
fprintf(dp, "%s\n", resp);
retval = atoi(strtok(resp, " "));
switch (retval) {
case 412: WriteError("No newsgroup selected");
return RETVAL_UNEXPECTEDANS;
case 420: WriteError("No current article has been selected");
return RETVAL_UNEXPECTEDANS;
case 423: WriteError("No such article in this group");
return RETVAL_UNEXPECTEDANS;
case 430: WriteError("No such article found");
return RETVAL_UNEXPECTEDANS;
case 220: if ((fp = tmpfile()) == NULL) {
WriteError("$Can't open tmpfile");
return RETVAL_UNEXPECTEDANS;
}
while (done == FALSE) {
resp = nntp_receive();
fwrite(resp, strlen(resp), 1, dp);
fprintf(dp, "\n");
fflush(dp);
if ((strlen(resp) == 1) && (strcmp(resp, ".") == 0)) {
done = TRUE;
} else {
fwrite(resp, strlen(resp), 1, fp);
fputc('\n', fp);
}
}
break;
}
IsDoing("Article %d", (news_in));
retval = rfc2ftn(fp, NULL);
fclose(fp);
fclose(dp);
return retval;
}
int get_xover(char *grpname, long startnr, long endnr, List **art)
{
char cmd[81], *ptr, *ptr2, *resp, *p;
int retval, dupe, done = FALSE;
long nr;
unsigned long crc;
POverview pov;
sprintf(cmd, "XOVER %ld-%ld\r\n", startnr, endnr);
if ((retval = nntp_cmd(cmd, 224))) {
switch (retval) {
case 412:
WriteError("No newsgroup selected");
return RETVAL_NOXOVER;
case 502:
WriteError("Permission denied");
return RETVAL_NOXOVER;
case 420:
Syslog('n', "No articles in group %s", grpname);
return RETVAL_OK;
}
}
while (done == FALSE) {
resp = nntp_receive();
if ((strlen(resp) == 1) && (strcmp(resp, ".") == 0)) {
done = TRUE;
} else {
Marker();
Nopper();
pov = xoverview;
ptr = resp;
ptr2 = ptr;
/*
* First item is the message number.
*/
while (*ptr2 != '\0' && *ptr2 != '\t')
ptr2++;
if (*ptr2 != '\0')
*(ptr2) = '\0';
nr = atol(ptr);
ptr = ptr2;
ptr++;
/*
* Search the message-id
*/
while (*ptr != '\0' && pov != NULL && strcmp(pov->header, "Message-ID:") != 0) {
/*
* goto the next field, past the tab.
*/
pov = pov->next;
while (*ptr != '\t' && *ptr != '\0')
ptr++;
if (*ptr != '\0')
ptr++;
}
if (*ptr != '\0' && pov != NULL) {
/*
* Found it, now find start of msgid
*/
while (*ptr != '\0' && *ptr != '<')
ptr++;
if(ptr != '\0') {
ptr2 = ptr;
while(*ptr2 != '\0' && *ptr2 != '>')
ptr2++;
if (*ptr2 != '\0') {
*(ptr2+1) = '\0';
p = xstrcpy(ptr);
p = xstrcat(p, grpname);
crc = str_crc32(p);
dupe = CheckDupe(crc, D_NEWS, CFG.nntpdupes);
fill_artlist(art, ptr, nr, dupe);
free(p);
if (CFG.slow_util && do_quiet)
usleep(1);
}
}
}
}
}
return RETVAL_OK;
}
int get_xoverview(void)
{
int retval, len, full, done = FALSE;
char *resp;
POverview tmp, curptr = NULL;
Syslog('n', "Getting overview format list");
if ((retval = nntp_cmd((char *)"LIST overview.fmt\r\n", 215)) == 0) {
while (done == FALSE) {
resp = nntp_receive();
if ((strcmp(resp, ".") == 0) && (strlen(resp) == 1)) {
done = TRUE;
} else {
len = strlen(resp);
/*
* Check for the full flag, which means the field name
* is in the xover string.
*/
full = (strstr(resp, ":full") == NULL) ? FALSE : TRUE;
/*
* Now get rid of everything back to :
*/
while (resp[len] != ':')
resp[len--] = '\0';
len++;
tmp = malloc(sizeof(Overview));
tmp->header = calloc(len + 1, sizeof(char));
strncpy(tmp->header, resp, len);
tmp->header[len] = '\0';
tmp->next = NULL;
tmp->field = NULL;
tmp->fieldlen = 0;
tmp->full = full;
if (curptr == NULL) {
/* at head of list */
curptr = tmp;
xoverview = tmp;
} else {
/* add to linked list */
curptr->next = tmp;
curptr = tmp;
}
}
}
if ((tmp = xoverview) != NULL) {
// most_debug = TRUE;
Syslog('N', "--Xoverview.fmt list");
while (tmp != NULL) {
if (tmp->header != NULL) {
Syslog('N', "item = %s -- full = %s", tmp->header, tmp->full ? "True":"False");
}
tmp = tmp->next;
}
// most_debug = FALSE;
}
} else {
return 1;
}
return 0;
}
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