/***************************************************************************** * * $Id$ * Purpose ...............: Scan for new News * ***************************************************************************** * Copyright (C) 1997-2007 * * 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, 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. *****************************************************************************/ #include "../config.h" #include "../lib/mbselib.h" #include "../lib/users.h" #include "../lib/mbinet.h" #include "../lib/mbsedb.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 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 *, int, int, List **); int get_xoverview(void); void tidy_artlist(List **); void fill_artlist(List **, char *, int, 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, int nr, int dupe) { List **tmp; for (tmp = fdp; *tmp; tmp = &((*tmp)->next)); *tmp = (List *)malloc(sizeof(List)); (*tmp)->next = NULL; snprintf((*tmp)->msgid, MAX_MSGID_LEN, "%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; IsDoing((char *)"Scan News"); if (nntp_connect() == -1) { WriteError("Can't connect to newsserver"); return; } if (get_xoverview()) { return; } if (!do_quiet) { mbse_colour(LIGHTGREEN, BLACK); printf("Scan for new news articles\n"); } sAreas = calloc(PATH_MAX, sizeof(char)); snprintf(sAreas, PATH_MAX, "%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); #ifdef USE_NEWSGATE if ((Msgs.Active) && strlen(Msgs.Newsgroup)) { #else if ((Msgs.Active) && strlen(Msgs.Newsgroup) && (Msgs.Type == NEWS)) { #endif if (IsSema((char *)"upsalarm")) { Syslog('+', "Detected upsalarm semafore, aborting newsscan"); break; } Syslog('m', "Scan newsgroup: %s", Msgs.Newsgroup); if (!do_quiet) { mbse_colour(CYAN, BLACK); 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); } nntp_close(); do_flush = TRUE; 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; int total, start, end; Syslog('m', "do_one_group(%s, %s)", grpname, ftntag); IsDoing((char *)"Scan %s", grpname); snprintf(temp, 128, "GROUP %s\r\n", grpname); nntp_send(temp); resp = nntp_receive(); retval = atoi(strtok(resp, " ")); if (retval == 480) { /* * We must login */ if (nntp_auth() == FALSE) { WriteError("Authorisation failure"); nntp_close(); return RETVAL_NOAUTH; } 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('m', "GROUP total %d, start %d, end %d, max %d", total, start, end, maxarticles); if ((maxarticles) && (total > maxarticles)) { start = end - maxarticles; total = maxarticles; Syslog('m', "NEW: total %d, start %d, end %d", total, start, end); } if (!total) { Syslog('+', "Fetched 0 articles from %s", grpname); 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. */ get_article(tmp->msgid, ftntag); fetched++; } } } tidy_artlist(art); if ((maxarticles) && (fetched == maxarticles)) Syslog('!', "Warning: the max. articles value in newsgroup %s might be to low", grpname); Syslog('+', "Fetched %d article%s from %s", fetched, (fetched == 1) ? "":"s", 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('m', "Get article %s, %s", msgid, ftntag); if (!SearchMsgs(ftntag)) { WriteError("Search message area %s failed", ftntag); return RETVAL_ERROR; } snprintf(dpath, PATH_MAX, "%s/tmp/scannews.last", getenv("MBSE_ROOT")); dp = fopen(dpath, "w"); IsDoing("Article %d", (news_in + 1)); snprintf(cmd, 81, "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, int startnr, int endnr, List **art) { char cmd[81], *ptr, *ptr2, *resp, *p; int retval, dupe, done = FALSE; int nr; unsigned int crc; POverview pov; snprintf(cmd, 81, "XOVER %d-%d\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('m', "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) msleep(1); } } } } } return RETVAL_OK; } int get_xoverview(void) { int retval, len, full, done = FALSE; char *resp; POverview tmp, curptr = NULL; Syslog('m', "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; } } } } else { return 1; } return 0; }