Annotation of libwww/Library/src/HTNews.c, revision 2.43
2.39 frystyk 1: /* NEWS ACCESS HTNews.c
2: ** ===========
1.1 timbl 3: **
4: ** History:
5: ** 26 Sep 90 Written TBL
6: ** 29 Nov 91 Downgraded to C, for portable implementation.
2.19 luotonen 7: ** 16 Feb 94 AL Added Lou Montulli's Lynx & LIST NEWSGROUPS diffs.
8: ** 2 May 94 AL Added HTUnEscape() to HTLoadNews(), and
9: ** fixed a possible security hole when the URL contains
10: ** a newline, that could cause multiple commands to be
11: ** sent to an NNTP server.
2.23 duns 12: ** 8 Jul 94 FM Insulate free() from _free structure element.
2.39 frystyk 13: ** 30 Aug 95 FTLO Added POST functionality and updated state machine
14: ** 30 Aug 95 HFN Cleaned up a whole lot and made a state machine
1.1 timbl 15: */
2.27 roeber 16:
2.39 frystyk 17: /* Library Include files */
2.28 frystyk 18: #include "tcp.h"
2.39 frystyk 19: #include "HTUtils.h"
2.28 frystyk 20: #include "HTString.h"
21: #include "HTParse.h"
2.39 frystyk 22: #include "HTFWrite.h"
23: #include "HTWriter.h"
24: #include "HTConLen.h"
2.30 frystyk 25: #include "HTSocket.h"
2.39 frystyk 26: #include "HTTCP.h"
2.28 frystyk 27: #include "HTError.h"
2.39 frystyk 28: #include "HTChunk.h"
29: #include "HTEscape.h"
2.43 ! frystyk 30: #include "HTReqMan.h" /* @@@ */
! 31: #include "HTNetMan.h" /* @@@ */
2.39 frystyk 32: #include "HTNewsRq.h"
33: #include "HTNews.h" /* Implements */
34:
35: /* Macros and other defines */
36: #ifndef NEWS_PORT
37: #define NEWS_PORT 119 /* See rfc977 */
38: #endif
1.3 timbl 39:
2.39 frystyk 40: #ifndef NEWS_LIST_FILE
41: #define NEWS_LIST_FILE ".www_news" /* Name of news list file */
42: #endif
1.1 timbl 43:
44: #ifndef DEFAULT_NEWS_HOST
2.39 frystyk 45: #define DEFAULT_NEWS_HOST "news"
1.1 timbl 46: #endif
2.39 frystyk 47:
1.1 timbl 48: #ifndef SERVER_FILE
2.39 frystyk 49: #define SERVER_FILE "/usr/local/lib/rn/server"
1.1 timbl 50: #endif
51:
2.40 frystyk 52: #define MAX_NEWS_ARTICLES 100 /* Max number of articles */
53:
2.39 frystyk 54: #define PUTBLOCK(b, l) (*me->target->isa->put_block) (me->target, b, l)
55: #define ABORT_TARGET (*me->target->isa->abort) (me->target, e)
2.8 timbl 56:
2.39 frystyk 57: /* Local context structure used in the HTNet object */
58: typedef enum _HTNewsState {
59: NEWS_BEGIN,
60: NEWS_SEEK_CACHE,
61: NEWS_NEED_CONNECTION,
62: NEWS_NEED_GREETING,
63: NEWS_NEED_SWITCH,
64: NEWS_NEED_ARTICLE,
65: #if 0
66: NEWS_NEED_LGRP,
67: #endif
68: NEWS_NEED_LIST,
69: NEWS_NEED_GROUP,
70: NEWS_NEED_XOVER,
71: NEWS_NEED_HEAD,
72: NEWS_NEED_POST,
73: NEWS_NEED_BODY,
74: NEWS_ERROR,
75: NEWS_SUCCESS
76: } HTNewsState;
77:
78: typedef struct _news_info {
79: HTChunk * cmd;
80: int repcode;
81: char * reply;
82: HTNewsState state; /* State of the connection */
83: HTFormat format;
84: char * name; /* Name of article or newsgroup */
85: BOOL sent; /* Read or write command */
86: int first; /* First article in the group list */
87: int last; /* Last article in the group list */
88: int total; /* Estimated number of articles */
89: int current; /* To count # of HEADS sent */
90: } news_info;
91:
92: /* This version of a stream is used for NEWS LIST conversion to HTML */
93: struct _HTStream {
94: CONST HTStreamClass * isa;
95: HTStream * target;
96: HTRequest * request;
97: news_info * news;
98: HTSocketEOL EOLstate;
99: BOOL semi_trans;
100: BOOL junk;
101: char buffer[MAX_NEWS_LINE+1];
102: int buflen;
1.2 timbl 103: };
104:
2.39 frystyk 105: PRIVATE char *HTNewsHost = NULL;
106: PRIVATE int HTNewsMaxArticles = MAX_NEWS_ARTICLES;
1.1 timbl 107:
2.39 frystyk 108: /* ------------------------------------------------------------------------- */
109: /* NEWS INPUT STREAM */
110: /* ------------------------------------------------------------------------- */
111:
112: /* ScanResponse
113: ** ------------
114: ** Analyzes the response from the NNTP server.
115: ** We only expect one line response codes.
116: ** Returns HT_LOADED if OK, HT_ERROR if error
117: */
118: PRIVATE int ScanResponse (HTStream * me)
119: {
120: news_info *news = me->news;
121: *(me->buffer+me->buflen) = '\0';
122: if (isdigit(*(me->buffer))) sscanf(me->buffer, "%d", &news->repcode);
123: me->buflen = 0;
124: news->reply = me->buffer+4;
2.42 frystyk 125: if (PROT_TRACE) TTYPrint(TDEST, "News Rx..... `%s\'\n", news->reply);
2.39 frystyk 126:
127: /* If 2xx code and we expect data then go into semi-transparent mode */
128: if (me->news->format && news->repcode/100 == 2) {
129: HTRequest *req = me->request;
130: me->target = HTStreamStack(me->news->format, req->output_format,
131: req->output_stream, req, NO);
132: me->semi_trans = YES;
133: if (!me->target) return HT_ERROR;
134: }
135: return HT_LOADED;
1.2 timbl 136: }
1.1 timbl 137:
2.39 frystyk 138: /*
139: ** Searches for NNTP header line until buffer fills up or a CRLF or LF
140: ** is found
1.1 timbl 141: */
2.39 frystyk 142: PRIVATE int HTNewsStatus_put_block (HTStream * me, CONST char * b, int l)
1.1 timbl 143: {
2.39 frystyk 144: while (!me->semi_trans && l-- > 0) {
145: int status;
146: if (me->EOLstate == EOL_FCR) {
147: if (*b == LF) {
148: if (me->junk) me->junk = NO;
149: me->EOLstate = EOL_BEGIN;
150: if ((status = ScanResponse(me)) != HT_LOADED) return status;
151: }
152: } else if (*b == CR) {
153: me->EOLstate = EOL_FCR;
154: } else if (*b == LF) {
155: if (me->junk) me->junk = NO;
156: me->EOLstate = EOL_BEGIN;
157: if ((status = ScanResponse(me)) != HT_LOADED) return status;
158: } else {
159: *(me->buffer+me->buflen++) = *b;
160: if (me->buflen >= MAX_NEWS_LINE) {
161: if (PROT_TRACE)
2.42 frystyk 162: TTYPrint(TDEST, "News Status. Line too long - chopped\n");
2.39 frystyk 163: me->junk = YES;
164: if ((status = ScanResponse(me)) != HT_LOADED) return status;
1.1 timbl 165: }
166: }
2.39 frystyk 167: b++;
168: }
1.1 timbl 169:
2.39 frystyk 170: /*
171: ** Now see if we have parts of the body to put down the stream pipe.
172: ** At this point we are looking for CRLF.CRLF. We are guaranteed a stream
173: */
174: if (l > 0) {
175: int rest = l;
176: CONST char *ptr = b;
177: while (rest-- > 0) {
178: if (*ptr == CR) {
179: me->EOLstate = me->EOLstate==EOL_DOT ? EOL_SCR : EOL_FCR;
180: } else if (*ptr == '.') {
181: me->EOLstate = me->EOLstate==EOL_FLF ? EOL_DOT : EOL_BEGIN;
182: } else if (*ptr == LF) {
183: me->EOLstate = me->EOLstate>EOL_DOT ? EOL_SLF : EOL_FLF;
184: } else
185: me->EOLstate = EOL_BEGIN;
186: ptr++;
187: }
188: if (me->EOLstate == EOL_SLF) {
189: int status = PUTBLOCK(b, l-5);
190: return status != HT_OK ? status : HT_LOADED;
191: } else {
192: int status = PUTBLOCK(b, l);
193: return status;
1.1 timbl 194: }
195: }
2.39 frystyk 196: return HT_LOADED;
1.1 timbl 197: }
198:
2.39 frystyk 199: PRIVATE int HTNewsStatus_put_character (HTStream * me, char ch)
1.1 timbl 200: {
2.39 frystyk 201: return HTNewsStatus_put_block(me, &ch, 1);
1.1 timbl 202: }
203:
2.39 frystyk 204: PRIVATE int HTNewsStatus_put_string (HTStream * me, CONST char * str)
1.1 timbl 205: {
2.39 frystyk 206: return HTNewsStatus_put_block(me, str, (int) strlen(str));
1.1 timbl 207: }
208:
2.39 frystyk 209: PRIVATE int HTNewsStatus_flush (HTStream * me)
1.1 timbl 210: {
2.39 frystyk 211: return me->target ? (*me->target->isa->flush)(me->target) : HT_OK;
1.1 timbl 212: }
213:
2.39 frystyk 214: PRIVATE int HTNewsStatus_free (HTStream * me)
1.2 timbl 215: {
2.39 frystyk 216: int status = HT_OK;
217: if (me->target) {
218: if ((status = (*me->target->isa->_free)(me->target)) == HT_WOULD_BLOCK)
219: return HT_WOULD_BLOCK;
1.2 timbl 220: }
2.39 frystyk 221: free(me);
222: return status;
1.2 timbl 223: }
1.1 timbl 224:
2.39 frystyk 225: PRIVATE int HTNewsStatus_abort (HTStream * me, HTError e)
2.16 luotonen 226: {
2.39 frystyk 227: if (me->target)
228: ABORT_TARGET;
229: free(me);
2.42 frystyk 230: if (PROT_TRACE) TTYPrint(TDEST, "NewsStatus.. ABORTING...\n");
2.39 frystyk 231: return HT_ERROR;
2.16 luotonen 232: }
233:
2.39 frystyk 234: PRIVATE CONST HTStreamClass HTNewsStatusClass =
235: {
236: "NewsStatus",
237: HTNewsStatus_flush,
238: HTNewsStatus_free,
239: HTNewsStatus_abort,
240: HTNewsStatus_put_character,
241: HTNewsStatus_put_string,
242: HTNewsStatus_put_block
243: };
2.16 luotonen 244:
2.39 frystyk 245: PUBLIC HTStream *HTNewsStatus_new (HTRequest * request, news_info * news)
1.1 timbl 246: {
2.39 frystyk 247: HTStream *me = (HTStream *) calloc(1, sizeof(HTStream));
248: if (!me) outofmem(__FILE__, "HTNewsStatus_new");
249: me->isa = &HTNewsStatusClass;
250: me->request = request;
251: me->news = news;
252: me->EOLstate = EOL_BEGIN;
253: return me;
1.1 timbl 254: }
255:
2.39 frystyk 256: /* ------------------------------------------------------------------------- */
257: /* PROTOCOL FUNCTIONS */
258: /* ------------------------------------------------------------------------- */
1.1 timbl 259:
2.39 frystyk 260: /*
261: ** Set the max number of articles at the same time.
262: ** Default is MAX_NEWS_ARTICLES
1.1 timbl 263: */
2.39 frystyk 264: PUBLIC BOOL HTNews_setMaxArticles (int new_max)
265: {
266: if (new_max > 0) {
267: HTNewsMaxArticles = new_max;
268: return YES;
1.1 timbl 269: }
2.39 frystyk 270: return NO;
1.1 timbl 271: }
272:
2.39 frystyk 273: /*
274: ** Get current max number of articles at the same time.
1.1 timbl 275: */
2.39 frystyk 276: PUBLIC int HTNews_maxArticles (void)
277: {
278: return HTNewsMaxArticles;
1.1 timbl 279: }
280:
2.39 frystyk 281: /*
282: ** Sets the current NEWS server.
283: */
284: PUBLIC BOOL HTNews_setHost (CONST char * newshost)
1.1 timbl 285: {
2.39 frystyk 286: if (newshost && *newshost) {
287: StrAllocCopy(HTNewsHost, newshost);
288: {
289: char *strptr = HTNewsHost;
290: while (*strptr) {
291: *strptr = TOLOWER(*strptr);
292: strptr++;
1.2 timbl 293: }
294:
2.39 frystyk 295: /* Remove final dot or paste in domain name */
296: if (strchr(HTNewsHost, '.')) {
297: if (*(HTNewsHost+strlen(HTNewsHost)-1) == '.')
298: *(HTNewsHost+strlen(HTNewsHost)-1) = '\0';
299: } else {
300: CONST char *domain = HTGetDomainName();
301: if (domain) {
302: StrAllocCat(HTNewsHost, ".");
303: StrAllocCat(HTNewsHost, domain);
304: }
305: }
1.1 timbl 306: }
2.39 frystyk 307: if (PROT_TRACE)
2.42 frystyk 308: TTYPrint(TDEST, "SetNewsHost. Host name is `%s\'\n", HTNewsHost);
2.39 frystyk 309: return YES;
310: } else {
311: if (PROT_TRACE)
2.42 frystyk 312: TTYPrint(TDEST, "SetNewsHost. Bad argument ignored\n");
2.39 frystyk 313: return NO;
1.1 timbl 314: }
315: }
316:
317: /*
2.39 frystyk 318: ** Except on the NeXT, we pick up the NewsHost name from
319: **
320: ** 1. Environment variable NNTPSERVER
321: ** 2. File SERVER_FILE
322: ** 3. Compilation time macro DEFAULT_NEWS_HOST
323: **
324: ** On the NeXT, we pick up the NewsHost name from, in order:
1.1 timbl 325: **
2.39 frystyk 326: ** 1. WorldWideWeb default "NewsHost"
327: ** 2. News default "NewsHost"
328: ** 3. Compilation time macro DEFAULT_NEWS_HOST
1.1 timbl 329: **
2.39 frystyk 330: ** Return: HTNewsHost if success else NULL
1.1 timbl 331: */
2.39 frystyk 332: PUBLIC CONST char *HTNews_host (void)
1.1 timbl 333: {
2.39 frystyk 334: if (HTNewsHost) {
335: if (*HTNewsHost) {
336: if (PROT_TRACE)
2.42 frystyk 337: TTYPrint(TDEST, "GetNewsHost. found as `%s\'\n", HTNewsHost);
2.39 frystyk 338: return HTNewsHost;
339: } else
340: return NULL; /* We couldn't get it the last time */
1.1 timbl 341: }
2.39 frystyk 342: {
343: char *newshost = NULL;
344: char buffer[80];
1.1 timbl 345:
2.39 frystyk 346: #ifdef NeXTStep
347: if ((newshost = NXGetDefaultValue("WorldWideWeb","NewsHost")) == 0)
348: if ((newshost = NXGetDefaultValue("News","NewsHost")) == 0)
349: newshost = DEFAULT_NEWS_HOST;
350: #else
351: if ((newshost = (char *) getenv("NNTPSERVER")) == NULL) {
352: FILE *fp = fopen(SERVER_FILE, "r");
353: *(buffer+79) = '\0';
354: if (fp) {
355: if (fgets(buffer, 79, fp)) {
356: char *end;
357: newshost = buffer;
358: while (*newshost == ' ' || *newshost == '\t')
359: newshost++;
360: end = newshost;
361: while (*end && !isspace(*end))
362: end++;
363: *end = '\0';
364: }
365: fclose(fp);
366: }
367: }
368: #endif /* NestStep */
1.1 timbl 369:
2.39 frystyk 370: if (!newshost || !*newshost)
371: newshost = DEFAULT_NEWS_HOST;
372: if (HTNews_setHost(newshost))
373: return HTNewsHost;
374: StrAllocCopy(HTNewsHost, "");
375: return NULL;
1.1 timbl 376: }
2.39 frystyk 377: }
1.1 timbl 378:
2.39 frystyk 379: /*
380: ** Free Newshostname
1.2 timbl 381: */
2.39 frystyk 382: PUBLIC void HTFreeNewsHost (void)
383: {
384: FREE(HTNewsHost);
385: }
1.2 timbl 386:
2.39 frystyk 387: /* HTNewsCleanup
388: ** -------------
389: ** This function closes the connection and frees memory.
390: ** Returns YES on OK, else NO
1.1 timbl 391: */
2.39 frystyk 392: PRIVATE int HTNewsCleanup (HTRequest * req, int status)
393: {
394: HTNet *net = req->net;
395: news_info *news = (news_info *) net->context;
1.1 timbl 396:
2.39 frystyk 397: /* Free stream with data TO network */
398: if (!HTRequest_isDestination(req) && req->input_stream) {
399: if (status == HT_INTERRUPTED)
400: (*req->input_stream->isa->abort)(req->input_stream, NULL);
401: else
402: (*req->input_stream->isa->_free)(req->input_stream);
1.1 timbl 403: }
2.16 luotonen 404:
2.39 frystyk 405: /* Remove the request object and our own context structure for nntp */
406: HTNet_delete(net, status);
407: FREE(news->name);
408: HTChunkFree(news->cmd);
409: FREE(news);
410: return YES;
1.1 timbl 411: }
412:
2.39 frystyk 413: PRIVATE int SendCommand (HTRequest *request, news_info *news,
414: char *token, char *pars)
1.1 timbl 415: {
2.39 frystyk 416: int len = strlen(token) + (pars ? strlen(pars)+1:0) + 2;
417: HTChunkClear(news->cmd);
418: HTChunkEnsure(news->cmd, len);
419: if (pars && *pars)
420: sprintf(HTChunkData(news->cmd), "%s %s%c%c", token, pars, CR, LF);
421: else
422: sprintf(HTChunkData(news->cmd), "%s%c%c", token, CR, LF);
2.42 frystyk 423: if (PROT_TRACE) TTYPrint(TDEST, "News Tx..... %s", HTChunkData(news->cmd));
2.39 frystyk 424: return (*request->input_stream->isa->put_block)
425: (request->input_stream, HTChunkData(news->cmd), len);
426: }
427:
428: /* Load data object from NNTP Server HTLoadNews
429: ** =================================
430: **
431: ** Given a hypertext addres, this routine loads a document
432: **
433: ** On Entry,
434: ** request The request structure
435: **
436: ** returns HT_ERROR Error has occured or interrupted
437: ** HT_WOULD_BLOCK if operation would have blocked
438: ** HT_LOADED if 200 OK
439: ** HT_NO_DATA if No Response
440: ** HT_RETRY if Service Unavail.
441: */
442: PUBLIC int HTLoadNews (SOCKET soc, HTRequest * request, SockOps ops)
443: {
444: int status = HT_ERROR;
445: HTNet *net = request->net;
446: HTParentAnchor *anchor = HTRequest_anchor(request);
447: char *url = HTAnchor_physical(anchor);
448: news_info *news;
449:
450: /*
451: ** Initiate a new nntp structure and bind to request structure
452: ** This is actually state NNTP_BEGIN, but it can't be in the state
453: ** machine as we need the structure first.
454: */
2.36 frystyk 455: if (ops == FD_NONE) {
2.39 frystyk 456: if (PROT_TRACE)
2.42 frystyk 457: TTYPrint(TDEST, "NNTP........ Looking for `%s\'\n", url);
2.36 frystyk 458: if ((news = (news_info *) calloc(1, sizeof(news_info))) == NULL)
459: outofmem(__FILE__, "HTLoadNews");
2.39 frystyk 460: news->cmd = HTChunkCreate(128);
2.36 frystyk 461: news->state = NEWS_BEGIN;
462: net->context = news;
2.39 frystyk 463: } else if (ops == FD_CLOSE) { /* Interrupted */
464: if(HTRequest_isPostWeb(request)&&!HTRequest_isMainDestination(request))
465: HTNewsCleanup(request, HT_IGNORE);
466: else
467: HTNewsCleanup(request, HT_INTERRUPTED);
2.36 frystyk 468: return HT_OK;
469: } else
2.39 frystyk 470: news = (news_info *) net->context; /* Get existing copy */
471:
472: /* Now start the state machine */
473: while (1) {
474: switch (news->state) {
475: case NEWS_BEGIN:
476: news->state = (!strchr(url, '@') && strchr(url, '*')) ?
477: NEWS_SEEK_CACHE : NEWS_NEED_CONNECTION;
478: break;
479:
480: case NEWS_SEEK_CACHE: /* @@@ DO THIS @@@@@@ */
481: news->state = NEWS_NEED_CONNECTION;
482: break;
483:
484: case NEWS_NEED_CONNECTION: /* Let's set up a connection */
485: if (!strncasecomp(url, "news:", 5)) {
486: CONST char *newshost = HTNews_host();
487: StrAllocCopy(news->name, url+5);
488: if (newshost) {
489: char *newshack = NULL; /* Then we can use HTParse :-) */
490: StrAllocCopy(newshack, "news://");
491: StrAllocCat(newshack, newshost);
492: status = HTDoConnect(net, (char *) newshack, NEWS_PORT);
493: free(newshack);
494: } else
495: news->state = NEWS_ERROR;
496: } else if (!strncasecomp(url, "nntp:", 5)) {
497: news->name = HTParse(url, "", PARSE_PATH);
498: status = HTDoConnect(net, url, NEWS_PORT);
499: } else {
2.42 frystyk 500: if (PROT_TRACE) TTYPrint(TDEST, "News........ Huh?");
2.39 frystyk 501: news->state = NEWS_ERROR;
502: }
503: if (status == HT_OK) {
504: BOOL greeting = NO;
505: char *s_class = HTDNS_serverClass(net->dns);
506: if (s_class && strcasecomp(s_class, "nntp")) {
507: HTErrorAdd(request, ERR_FATAL, NO, HTERR_CLASS, NULL, 0,
508: "HTLoadNews");
509: news->state = NEWS_ERROR;
510: break;
511: }
512: HTDNS_setServerClass(net->dns, "nntp");
513: if (HTDNS_socket(net->dns) == INVSOC) {
514: HTDNS_setSocket(net->dns, net->sockfd);
515: greeting = YES;
516: }
517: if (PROT_TRACE)
2.42 frystyk 518: TTYPrint(TDEST, "News........ Connected, socket %d\n",
2.39 frystyk 519: net->sockfd);
2.36 frystyk 520:
2.39 frystyk 521: /* Set up stream TO network */
522: request->input_stream = HTWriter_new(net, YES);
523:
524: /*
525: ** Set up concurrent read/write if this request isn't the
526: ** source for a PUT or POST. As source we don't start reading
527: ** before all destinations are ready. If destination then
528: ** register the input stream and get ready for read
529: */
530: if (HTRequest_isPostWeb(request)) {
531: HTEvent_Register(net->sockfd, request, (SockOps) FD_READ,
532: HTLoadNews, net->priority);
533: HTRequest_linkDestination(request);
534: }
535:
536: /* Set up stream FROM network and corresponding read buffer */
537: net->isoc = HTInputSocket_new(net->sockfd);
538: net->target = HTNewsStatus_new(request, news);
539: news->state = greeting ? NEWS_NEED_GREETING : NEWS_NEED_SWITCH;
540: } else if (status == HT_WOULD_BLOCK || status == HT_PERSISTENT)
541: return HT_OK;
542: else
543: news->state = NEWS_ERROR;
544: break;
545:
546: case NEWS_NEED_GREETING:
547: status = HTSocketRead(request, net);
548: if (status == HT_WOULD_BLOCK)
549: return HT_OK;
550: else if (status == HT_LOADED) {
551: if (news->repcode/100 == 2)
552: news->state = NEWS_NEED_SWITCH;
553: else
554: news->state = NEWS_ERROR;
555: } else
556: news->state = NEWS_ERROR;
557: break;
558:
559: case NEWS_NEED_SWITCH:
560: /*
561: ** Find out what to ask the news server. Syntax of address is
562: ** xxx@yyy Article
563: ** <xxx@yyy> Same article
564: ** xxxxx News group (no "@")
565: */
566: if (request->method == METHOD_GET) {
567: if (strchr(url, '@')) { /* ARTICLE */
568: if (*(news->name) != '<') { /* Add '<' and '>' */
569: char *newart = (char *) malloc(strlen(news->name)+3);
570: if (!newart) outofmem(__FILE__, "HTLoadNews");
571: sprintf(newart, "<%s>", news->name);
572: free(news->name);
573: news->name = newart;
574: }
575: news->state = NEWS_NEED_ARTICLE;
576: } else if (strchr(url, '*'))
577: news->state = NEWS_NEED_LIST;
578: else
579: news->state = NEWS_NEED_GROUP;
580: } else if (request->method == METHOD_POST)
581: news->state = NEWS_NEED_POST;
582: else {
583: HTErrorAdd(request, ERR_FATAL, NO, HTERR_NOT_IMPLEMENTED,
584: NULL, 0, "HTLoadNews");
585: news->state = NEWS_ERROR;
586: }
587: HTUnEscape(news->name);
588: HTCleanTelnetString(news->name);
589: break;
590:
591: case NEWS_NEED_ARTICLE:
592: if (!news->sent) {
593: status = SendCommand(request, news, "ARTICLE", news->name);
594: if (status == HT_WOULD_BLOCK)
595: return HT_OK;
596: else if (status == HT_ERROR)
597: news->state = NEWS_ERROR;
598: news->format = WWW_MIME;
599: news->sent = YES;
600: } else {
601: status = HTSocketRead(request, net);
602: if (status == HT_WOULD_BLOCK)
603: return HT_OK;
604: else if (status == HT_OK)
605: news->state = NEWS_NEED_BODY;
606: else if (status == HT_LOADED) {
607: news->state = (news->repcode/100 == 2) ?
608: NEWS_SUCCESS : NEWS_ERROR;
609: } else
610: news->state = NEWS_ERROR;
611: news->sent = NO;
612: }
613: break;
614:
615: #if 0
616: case NEWS_NEED_LGRP:
617: if (!news->sent) {
618: status = SendCommand(request, news, "LIST", "NEWSGROUPS");
619: if (status == HT_WOULD_BLOCK)
620: return HT_OK;
621: else if (status == HT_ERROR)
622: news->state = NEWS_ERROR;
623: news->format = WWW_NNTP_LIST;
624: news->sent = YES;
625: } else {
626: status = HTSocketRead(request, net);
627: if (status == HT_WOULD_BLOCK)
628: return HT_OK;
629: else if (status == HT_OK)
630: news->state = NEWS_NEED_BODY;
631: else if (status == HT_LOADED) {
632: news->state = (news->repcode/100 == 2) ?
633: NEWS_SUCCESS : NEWS_NEED_LIST;
634: } else
635: news->state = NEWS_ERROR;
636: news->sent = NO;
637: }
638: break;
639: #endif
640:
641: case NEWS_NEED_LIST:
642: if (!news->sent) {
643: status = SendCommand(request, news, "LIST", NULL);
644: if (status == HT_WOULD_BLOCK)
645: return HT_OK;
646: else if (status == HT_ERROR)
647: news->state = NEWS_ERROR;
648: news->format = WWW_NNTP_LIST;
649: news->sent = YES;
650: } else {
651: status = HTSocketRead(request, net);
652: if (status == HT_WOULD_BLOCK)
653: return HT_OK;
654: else if (status == HT_OK)
655: news->state = NEWS_NEED_BODY;
656: else if (status == HT_LOADED) {
657: news->state = (news->repcode/100 == 2) ?
658: NEWS_SUCCESS : NEWS_ERROR;
659: } else
660: news->state = NEWS_ERROR;
661: news->sent = NO;
662: }
663: break;
1.1 timbl 664:
2.39 frystyk 665: case NEWS_NEED_GROUP:
666: if (!news->sent) {
667: status = SendCommand(request, news, "GROUP", news->name);
668: if (status == HT_WOULD_BLOCK)
669: return HT_OK;
670: else if (status == HT_ERROR)
671: news->state = NEWS_ERROR;
672: news->sent = YES;
1.1 timbl 673: } else {
2.39 frystyk 674: status = HTSocketRead(request, net);
675: if (status == HT_WOULD_BLOCK)
676: return HT_OK;
677: else if (status == HT_LOADED) {
678: if (news->repcode/100 == 2) {
679: if (sscanf(news->reply, "%d%d%d", &news->total,
680: &news->first, &news->last) == 3) {
681: if (news->total > HTNewsMaxArticles)
682: news->last = news->first-HTNewsMaxArticles;
683: news->current = news->first;
684: news->state = NEWS_NEED_XOVER;
685: } else
686: news->state = NEWS_ERROR;
687: } else
688: news->state = NEWS_ERROR;
689: } else
690: news->state = NEWS_ERROR;
691: news->sent = NO;
1.1 timbl 692: }
2.39 frystyk 693: break;
1.1 timbl 694:
2.39 frystyk 695: case NEWS_NEED_XOVER:
696: if (!news->sent) {
697: char buf[20];
698: sprintf(buf, "%d-%d", news->first, news->last);
699: status = SendCommand(request, news, "XOVER", buf);
700: if (status == HT_WOULD_BLOCK)
701: return HT_OK;
702: else if (status == HT_ERROR)
703: news->state = NEWS_ERROR;
704: news->format = WWW_NNTP_OVER;
705: news->sent = YES;
706: } else {
707: status = HTSocketRead(request, net);
708: if (status == HT_WOULD_BLOCK)
709: return HT_OK;
710: else if (status == HT_OK)
711: news->state = NEWS_NEED_BODY;
712: else if (status == HT_LOADED) {
713: if (news->repcode/100 == 2)
714: news->state = NEWS_SUCCESS;
715: else {
716: news->format = WWW_NNTP_HEAD;
717: news->state = NEWS_NEED_HEAD;
718: }
719: } else
720: news->state = NEWS_ERROR;
721: news->sent = NO;
722: }
723: break;
1.1 timbl 724:
2.39 frystyk 725: case NEWS_NEED_HEAD:
726: if (!news->sent) {
727: char buf[10];
728: sprintf(buf, "%d", news->current++);
729: status = SendCommand(request, news, "HEAD", buf);
730: if (status == HT_WOULD_BLOCK)
2.36 frystyk 731: return HT_OK;
2.39 frystyk 732: else if (status == HT_ERROR)
733: news->state = NEWS_ERROR;
734: news->sent = YES;
1.1 timbl 735: } else {
2.39 frystyk 736: status = HTSocketRead(request, net);
737: if (status == HT_WOULD_BLOCK)
738: return HT_OK;
739: else if (status == HT_LOADED) {
740: if (news->repcode/100 == 2) {
741: if (news->current > news->last)
742: news->state = NEWS_SUCCESS;
743: } else
744: news->state = NEWS_ERROR;
745: } else
746: news->state = NEWS_ERROR;
747: news->sent = NO;
748: }
749: break;
750:
751: case NEWS_NEED_POST:
752: request->input_stream =
753: HTNewsPost_new(request, HTBuffer_new(request->input_stream,
754: request, 512));
755:
756: /* Remember to convert to CRLF */
757:
758: news->state = NEWS_NEED_BODY;
759: break;
760:
761: case NEWS_NEED_BODY:
762: if (ops == FD_WRITE || ops == FD_NONE) {
763: if (HTRequest_isDestination(request)) {
764: HTNet *srcnet = request->source->net;
765: HTEvent_Register(srcnet->sockfd, request->source,
766: (SockOps) FD_READ,
767: HTLoadNews, srcnet->priority);
2.36 frystyk 768: return HT_OK;
2.21 frystyk 769: }
2.41 frystyk 770: status = request->PostCallback ?
771: request->PostCallback(request, request->input_stream) :
2.39 frystyk 772: (*request->input_stream->isa->flush)(request->input_stream);
773: if (status == HT_WOULD_BLOCK)
774: return HT_OK;
775: else
776: ops = FD_READ; /* Trick to ensure that we do READ */
777: } else if (ops == FD_READ) {
778: status = HTSocketRead(request, net);
779: if (status == HT_WOULD_BLOCK)
780: return HT_OK;
781: else if (status == HT_LOADED)
782: news->state = NEWS_SUCCESS;
783: else
784: news->state = NEWS_ERROR;
785: } else {
786: news->state = NEWS_ERROR;
1.1 timbl 787: }
2.39 frystyk 788: break;
789:
790: case NEWS_SUCCESS:
791: if (HTRequest_isPostWeb(request)) {
792: BOOL main = HTRequest_isMainDestination(request);
793: if (HTRequest_isDestination(request)) {
794: HTLink *link =
795: HTAnchor_findLink((HTAnchor *) request->source->anchor,
796: (HTAnchor *) request->anchor);
797: HTAnchor_setLinkResult(link, HT_LINK_OK);
798: }
799: HTRequest_removeDestination(request);
800: HTNewsCleanup(request, main ? HT_LOADED : HT_IGNORE);
801: } else
802: HTNewsCleanup(request, HT_LOADED);
803: return HT_OK;
804: break;
805:
806: case NEWS_ERROR:
807: /* Clean up the other connections or just this one */
808: if (HTRequest_isPostWeb(request)) {
809: BOOL main = HTRequest_isMainDestination(request);
810: HTRequest_killPostWeb(request);
811: if (HTRequest_isDestination(request)) {
812: HTLink *link =
813: HTAnchor_findLink((HTAnchor *) request->source->anchor,
814: (HTAnchor *) request->anchor);
815: HTAnchor_setLinkResult(link, HT_LINK_ERROR);
816: }
817: HTRequest_removeDestination(request);
818: HTNewsCleanup(request, main ? HT_ERROR : HT_IGNORE);
819: } else
820: HTNewsCleanup(request, HT_ERROR);
821: return HT_OK;
822: break;
1.1 timbl 823: }
2.39 frystyk 824: } /* End of while(1) */
1.1 timbl 825: }
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