Annotation of libwww/Library/src/HTNews.c, revision 2.50
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:
2.45 frystyk 52: #define MAX_NEWS_ARTICLES 0 /* No default max number of articles */
2.40 frystyk 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,
2.45 frystyk 65: #if HT_LISTGROUP
2.39 frystyk 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;
2.45 frystyk 106: PRIVATE int MaxArt = 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: }
2.50 ! frystyk 221: HT_FREE(me);
2.39 frystyk 222: return status;
1.2 timbl 223: }
1.1 timbl 224:
2.44 frystyk 225: PRIVATE int HTNewsStatus_abort (HTStream * me, HTList * e)
2.16 luotonen 226: {
2.39 frystyk 227: if (me->target)
228: ABORT_TARGET;
2.50 ! frystyk 229: HT_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: {
2.50 ! frystyk 247: HTStream *me;
! 248: if ((me = (HTStream *) HT_CALLOC(1, sizeof(HTStream))) == NULL)
! 249: HT_OUTOFMEM("HTNewsStatus_new");
2.39 frystyk 250: me->isa = &HTNewsStatusClass;
251: me->request = request;
252: me->news = news;
253: me->EOLstate = EOL_BEGIN;
254: return me;
1.1 timbl 255: }
256:
2.39 frystyk 257: /* ------------------------------------------------------------------------- */
258: /* PROTOCOL FUNCTIONS */
259: /* ------------------------------------------------------------------------- */
1.1 timbl 260:
2.39 frystyk 261: /*
262: ** Set the max number of articles at the same time.
263: ** Default is MAX_NEWS_ARTICLES
1.1 timbl 264: */
2.39 frystyk 265: PUBLIC BOOL HTNews_setMaxArticles (int new_max)
266: {
2.45 frystyk 267: if (new_max >= 0) {
268: MaxArt = new_max;
2.39 frystyk 269: return YES;
1.1 timbl 270: }
2.39 frystyk 271: return NO;
1.1 timbl 272: }
273:
2.39 frystyk 274: /*
275: ** Get current max number of articles at the same time.
1.1 timbl 276: */
2.39 frystyk 277: PUBLIC int HTNews_maxArticles (void)
278: {
2.45 frystyk 279: return MaxArt;
1.1 timbl 280: }
281:
2.39 frystyk 282: /*
283: ** Sets the current NEWS server.
284: */
285: PUBLIC BOOL HTNews_setHost (CONST char * newshost)
1.1 timbl 286: {
2.39 frystyk 287: if (newshost && *newshost) {
288: StrAllocCopy(HTNewsHost, newshost);
289: {
290: char *strptr = HTNewsHost;
291: while (*strptr) {
292: *strptr = TOLOWER(*strptr);
293: strptr++;
1.2 timbl 294: }
295:
2.39 frystyk 296: /* Remove final dot or paste in domain name */
297: if (strchr(HTNewsHost, '.')) {
298: if (*(HTNewsHost+strlen(HTNewsHost)-1) == '.')
299: *(HTNewsHost+strlen(HTNewsHost)-1) = '\0';
300: } else {
301: CONST char *domain = HTGetDomainName();
302: if (domain) {
303: StrAllocCat(HTNewsHost, ".");
304: StrAllocCat(HTNewsHost, domain);
305: }
306: }
1.1 timbl 307: }
2.39 frystyk 308: if (PROT_TRACE)
2.42 frystyk 309: TTYPrint(TDEST, "SetNewsHost. Host name is `%s\'\n", HTNewsHost);
2.39 frystyk 310: return YES;
311: } else {
312: if (PROT_TRACE)
2.42 frystyk 313: TTYPrint(TDEST, "SetNewsHost. Bad argument ignored\n");
2.39 frystyk 314: return NO;
1.1 timbl 315: }
316: }
317:
318: /*
2.39 frystyk 319: ** Except on the NeXT, we pick up the NewsHost name from
320: **
321: ** 1. Environment variable NNTPSERVER
322: ** 2. File SERVER_FILE
323: ** 3. Compilation time macro DEFAULT_NEWS_HOST
324: **
325: ** On the NeXT, we pick up the NewsHost name from, in order:
1.1 timbl 326: **
2.39 frystyk 327: ** 1. WorldWideWeb default "NewsHost"
328: ** 2. News default "NewsHost"
329: ** 3. Compilation time macro DEFAULT_NEWS_HOST
1.1 timbl 330: **
2.39 frystyk 331: ** Return: HTNewsHost if success else NULL
1.1 timbl 332: */
2.39 frystyk 333: PUBLIC CONST char *HTNews_host (void)
1.1 timbl 334: {
2.39 frystyk 335: if (HTNewsHost) {
336: if (*HTNewsHost) {
337: if (PROT_TRACE)
2.42 frystyk 338: TTYPrint(TDEST, "GetNewsHost. found as `%s\'\n", HTNewsHost);
2.39 frystyk 339: return HTNewsHost;
340: } else
341: return NULL; /* We couldn't get it the last time */
1.1 timbl 342: }
2.39 frystyk 343: {
344: char *newshost = NULL;
345: char buffer[80];
1.1 timbl 346:
2.39 frystyk 347: #ifdef NeXTStep
348: if ((newshost = NXGetDefaultValue("WorldWideWeb","NewsHost")) == 0)
349: if ((newshost = NXGetDefaultValue("News","NewsHost")) == 0)
350: newshost = DEFAULT_NEWS_HOST;
351: #else
352: if ((newshost = (char *) getenv("NNTPSERVER")) == NULL) {
353: FILE *fp = fopen(SERVER_FILE, "r");
354: *(buffer+79) = '\0';
355: if (fp) {
356: if (fgets(buffer, 79, fp)) {
357: char *end;
358: newshost = buffer;
359: while (*newshost == ' ' || *newshost == '\t')
360: newshost++;
361: end = newshost;
362: while (*end && !isspace(*end))
363: end++;
364: *end = '\0';
365: }
366: fclose(fp);
367: }
368: }
369: #endif /* NestStep */
1.1 timbl 370:
2.39 frystyk 371: if (!newshost || !*newshost)
372: newshost = DEFAULT_NEWS_HOST;
373: if (HTNews_setHost(newshost))
374: return HTNewsHost;
375: StrAllocCopy(HTNewsHost, "");
376: return NULL;
1.1 timbl 377: }
2.39 frystyk 378: }
1.1 timbl 379:
2.39 frystyk 380: /*
381: ** Free Newshostname
1.2 timbl 382: */
2.39 frystyk 383: PUBLIC void HTFreeNewsHost (void)
384: {
2.50 ! frystyk 385: HT_FREE(HTNewsHost);
2.39 frystyk 386: }
1.2 timbl 387:
2.39 frystyk 388: /* HTNewsCleanup
389: ** -------------
390: ** This function closes the connection and frees memory.
391: ** Returns YES on OK, else NO
1.1 timbl 392: */
2.39 frystyk 393: PRIVATE int HTNewsCleanup (HTRequest * req, int status)
394: {
395: HTNet *net = req->net;
396: news_info *news = (news_info *) net->context;
1.1 timbl 397:
2.39 frystyk 398: /* Free stream with data TO network */
399: if (!HTRequest_isDestination(req) && req->input_stream) {
400: if (status == HT_INTERRUPTED)
401: (*req->input_stream->isa->abort)(req->input_stream, NULL);
402: else
403: (*req->input_stream->isa->_free)(req->input_stream);
1.1 timbl 404: }
2.16 luotonen 405:
2.39 frystyk 406: /* Remove the request object and our own context structure for nntp */
407: HTNet_delete(net, status);
2.49 frystyk 408: if (news) {
2.50 ! frystyk 409: HT_FREE(news->name);
2.49 frystyk 410: HTChunk_delete(news->cmd);
2.50 ! frystyk 411: HT_FREE(news);
2.49 frystyk 412: }
2.39 frystyk 413: return YES;
1.1 timbl 414: }
415:
2.39 frystyk 416: PRIVATE int SendCommand (HTRequest *request, news_info *news,
417: char *token, char *pars)
1.1 timbl 418: {
2.39 frystyk 419: int len = strlen(token) + (pars ? strlen(pars)+1:0) + 2;
2.48 frystyk 420: HTChunk_clear(news->cmd);
421: HTChunk_ensure(news->cmd, len);
2.39 frystyk 422: if (pars && *pars)
2.48 frystyk 423: sprintf(HTChunk_data(news->cmd), "%s %s%c%c", token, pars, CR, LF);
2.39 frystyk 424: else
2.48 frystyk 425: sprintf(HTChunk_data(news->cmd), "%s%c%c", token, CR, LF);
426: if (PROT_TRACE) TTYPrint(TDEST, "News Tx..... %s", HTChunk_data(news->cmd));
2.39 frystyk 427: return (*request->input_stream->isa->put_block)
2.48 frystyk 428: (request->input_stream, HTChunk_data(news->cmd), len);
2.39 frystyk 429: }
430:
431: /* Load data object from NNTP Server HTLoadNews
432: ** =================================
433: **
434: ** Given a hypertext addres, this routine loads a document
435: **
436: ** On Entry,
437: ** request The request structure
438: **
439: ** returns HT_ERROR Error has occured or interrupted
440: ** HT_WOULD_BLOCK if operation would have blocked
441: ** HT_LOADED if 200 OK
442: ** HT_NO_DATA if No Response
443: ** HT_RETRY if Service Unavail.
444: */
445: PUBLIC int HTLoadNews (SOCKET soc, HTRequest * request, SockOps ops)
446: {
447: int status = HT_ERROR;
448: HTNet *net = request->net;
449: HTParentAnchor *anchor = HTRequest_anchor(request);
450: char *url = HTAnchor_physical(anchor);
451: news_info *news;
452:
453: /*
454: ** Initiate a new nntp structure and bind to request structure
455: ** This is actually state NNTP_BEGIN, but it can't be in the state
456: ** machine as we need the structure first.
457: */
2.36 frystyk 458: if (ops == FD_NONE) {
2.39 frystyk 459: if (PROT_TRACE)
2.42 frystyk 460: TTYPrint(TDEST, "NNTP........ Looking for `%s\'\n", url);
2.50 ! frystyk 461: if ((news = (news_info *) HT_CALLOC(1, sizeof(news_info))) == NULL)
! 462: HT_OUTOFMEM("HTLoadNews");
2.48 frystyk 463: news->cmd = HTChunk_new(128);
2.36 frystyk 464: news->state = NEWS_BEGIN;
465: net->context = news;
2.39 frystyk 466: } else if (ops == FD_CLOSE) { /* Interrupted */
467: if(HTRequest_isPostWeb(request)&&!HTRequest_isMainDestination(request))
468: HTNewsCleanup(request, HT_IGNORE);
469: else
470: HTNewsCleanup(request, HT_INTERRUPTED);
2.36 frystyk 471: return HT_OK;
472: } else
2.39 frystyk 473: news = (news_info *) net->context; /* Get existing copy */
474:
475: /* Now start the state machine */
476: while (1) {
477: switch (news->state) {
478: case NEWS_BEGIN:
479: news->state = (!strchr(url, '@') && strchr(url, '*')) ?
480: NEWS_SEEK_CACHE : NEWS_NEED_CONNECTION;
481: break;
482:
483: case NEWS_SEEK_CACHE: /* @@@ DO THIS @@@@@@ */
484: news->state = NEWS_NEED_CONNECTION;
485: break;
486:
487: case NEWS_NEED_CONNECTION: /* Let's set up a connection */
488: if (!strncasecomp(url, "news:", 5)) {
489: CONST char *newshost = HTNews_host();
490: StrAllocCopy(news->name, url+5);
491: if (newshost) {
492: char *newshack = NULL; /* Then we can use HTParse :-) */
493: StrAllocCopy(newshack, "news://");
494: StrAllocCat(newshack, newshost);
495: status = HTDoConnect(net, (char *) newshack, NEWS_PORT);
2.50 ! frystyk 496: HT_FREE(newshack);
2.39 frystyk 497: } else
498: news->state = NEWS_ERROR;
499: } else if (!strncasecomp(url, "nntp:", 5)) {
500: news->name = HTParse(url, "", PARSE_PATH);
501: status = HTDoConnect(net, url, NEWS_PORT);
502: } else {
2.42 frystyk 503: if (PROT_TRACE) TTYPrint(TDEST, "News........ Huh?");
2.39 frystyk 504: news->state = NEWS_ERROR;
505: }
506: if (status == HT_OK) {
507: BOOL greeting = NO;
508: char *s_class = HTDNS_serverClass(net->dns);
509: if (s_class && strcasecomp(s_class, "nntp")) {
2.46 frystyk 510: HTRequest_addError(request, ERR_FATAL, NO, HTERR_CLASS,
511: NULL, 0, "HTLoadNews");
2.39 frystyk 512: news->state = NEWS_ERROR;
513: break;
514: }
515: HTDNS_setServerClass(net->dns, "nntp");
516: if (HTDNS_socket(net->dns) == INVSOC) {
517: HTDNS_setSocket(net->dns, net->sockfd);
518: greeting = YES;
519: }
520: if (PROT_TRACE)
2.42 frystyk 521: TTYPrint(TDEST, "News........ Connected, socket %d\n",
2.39 frystyk 522: net->sockfd);
2.36 frystyk 523:
2.39 frystyk 524: /* Set up stream TO network */
525: request->input_stream = HTWriter_new(net, YES);
526:
527: /*
528: ** Set up concurrent read/write if this request isn't the
529: ** source for a PUT or POST. As source we don't start reading
530: ** before all destinations are ready. If destination then
531: ** register the input stream and get ready for read
532: */
533: if (HTRequest_isPostWeb(request)) {
534: HTEvent_Register(net->sockfd, request, (SockOps) FD_READ,
535: HTLoadNews, net->priority);
536: HTRequest_linkDestination(request);
537: }
538:
539: /* Set up stream FROM network and corresponding read buffer */
540: net->isoc = HTInputSocket_new(net->sockfd);
541: net->target = HTNewsStatus_new(request, news);
542: news->state = greeting ? NEWS_NEED_GREETING : NEWS_NEED_SWITCH;
543: } else if (status == HT_WOULD_BLOCK || status == HT_PERSISTENT)
544: return HT_OK;
545: else
546: news->state = NEWS_ERROR;
547: break;
548:
549: case NEWS_NEED_GREETING:
550: status = HTSocketRead(request, net);
551: if (status == HT_WOULD_BLOCK)
552: return HT_OK;
553: else if (status == HT_LOADED) {
554: if (news->repcode/100 == 2)
555: news->state = NEWS_NEED_SWITCH;
556: else
557: news->state = NEWS_ERROR;
558: } else
559: news->state = NEWS_ERROR;
560: break;
561:
562: case NEWS_NEED_SWITCH:
563: /*
564: ** Find out what to ask the news server. Syntax of address is
565: ** xxx@yyy Article
566: ** <xxx@yyy> Same article
567: ** xxxxx News group (no "@")
568: */
569: if (request->method == METHOD_GET) {
570: if (strchr(url, '@')) { /* ARTICLE */
571: if (*(news->name) != '<') { /* Add '<' and '>' */
2.50 ! frystyk 572: char *newart;
! 573: if ((newart = (char *) HT_MALLOC(strlen(news->name)+3)) == NULL)
! 574: HT_OUTOFMEM("HTLoadNews");
2.39 frystyk 575: sprintf(newart, "<%s>", news->name);
2.50 ! frystyk 576: HT_FREE(news->name);
2.39 frystyk 577: news->name = newart;
578: }
579: news->state = NEWS_NEED_ARTICLE;
580: } else if (strchr(url, '*'))
581: news->state = NEWS_NEED_LIST;
582: else
583: news->state = NEWS_NEED_GROUP;
584: } else if (request->method == METHOD_POST)
585: news->state = NEWS_NEED_POST;
586: else {
2.46 frystyk 587: HTRequest_addError(request, ERR_FATAL, NO,
588: HTERR_NOT_IMPLEMENTED,NULL, 0,"HTLoadNews");
2.39 frystyk 589: news->state = NEWS_ERROR;
590: }
591: HTUnEscape(news->name);
592: HTCleanTelnetString(news->name);
593: break;
594:
595: case NEWS_NEED_ARTICLE:
596: if (!news->sent) {
597: status = SendCommand(request, news, "ARTICLE", news->name);
598: if (status == HT_WOULD_BLOCK)
599: return HT_OK;
600: else if (status == HT_ERROR)
601: news->state = NEWS_ERROR;
602: news->format = WWW_MIME;
603: news->sent = YES;
604: } else {
605: status = HTSocketRead(request, net);
606: if (status == HT_WOULD_BLOCK)
607: return HT_OK;
608: else if (status == HT_OK)
609: news->state = NEWS_NEED_BODY;
610: else if (status == HT_LOADED) {
611: news->state = (news->repcode/100 == 2) ?
612: NEWS_SUCCESS : NEWS_ERROR;
613: } else
614: news->state = NEWS_ERROR;
615: news->sent = NO;
616: }
617: break;
618:
2.45 frystyk 619: #if HT_LISTGROUP
2.39 frystyk 620: case NEWS_NEED_LGRP:
621: if (!news->sent) {
622: status = SendCommand(request, news, "LIST", "NEWSGROUPS");
623: if (status == HT_WOULD_BLOCK)
624: return HT_OK;
625: else if (status == HT_ERROR)
626: news->state = NEWS_ERROR;
627: news->format = WWW_NNTP_LIST;
628: news->sent = YES;
629: } else {
630: status = HTSocketRead(request, net);
631: if (status == HT_WOULD_BLOCK)
632: return HT_OK;
633: else if (status == HT_OK)
634: news->state = NEWS_NEED_BODY;
635: else if (status == HT_LOADED) {
636: news->state = (news->repcode/100 == 2) ?
637: NEWS_SUCCESS : NEWS_NEED_LIST;
638: } else
639: news->state = NEWS_ERROR;
640: news->sent = NO;
641: }
642: break;
2.45 frystyk 643: #endif /* HT_LISTGROUP */
2.39 frystyk 644:
645: case NEWS_NEED_LIST:
646: if (!news->sent) {
647: status = SendCommand(request, news, "LIST", NULL);
648: if (status == HT_WOULD_BLOCK)
649: return HT_OK;
650: else if (status == HT_ERROR)
651: news->state = NEWS_ERROR;
652: news->format = WWW_NNTP_LIST;
653: news->sent = YES;
654: } else {
655: status = HTSocketRead(request, net);
656: if (status == HT_WOULD_BLOCK)
657: return HT_OK;
658: else if (status == HT_OK)
659: news->state = NEWS_NEED_BODY;
660: else if (status == HT_LOADED) {
661: news->state = (news->repcode/100 == 2) ?
662: NEWS_SUCCESS : NEWS_ERROR;
663: } else
664: news->state = NEWS_ERROR;
665: news->sent = NO;
666: }
667: break;
1.1 timbl 668:
2.39 frystyk 669: case NEWS_NEED_GROUP:
670: if (!news->sent) {
671: status = SendCommand(request, news, "GROUP", news->name);
672: if (status == HT_WOULD_BLOCK)
673: return HT_OK;
674: else if (status == HT_ERROR)
675: news->state = NEWS_ERROR;
676: news->sent = YES;
1.1 timbl 677: } else {
2.39 frystyk 678: status = HTSocketRead(request, net);
679: if (status == HT_WOULD_BLOCK)
680: return HT_OK;
681: else if (status == HT_LOADED) {
682: if (news->repcode/100 == 2) {
683: if (sscanf(news->reply, "%d%d%d", &news->total,
684: &news->first, &news->last) == 3) {
2.45 frystyk 685: if (MaxArt && news->total>MaxArt)
686: news->last = news->first-MaxArt;
2.39 frystyk 687: news->current = news->first;
688: news->state = NEWS_NEED_XOVER;
689: } else
690: news->state = NEWS_ERROR;
691: } else
692: news->state = NEWS_ERROR;
693: } else
694: news->state = NEWS_ERROR;
695: news->sent = NO;
1.1 timbl 696: }
2.39 frystyk 697: break;
1.1 timbl 698:
2.39 frystyk 699: case NEWS_NEED_XOVER:
700: if (!news->sent) {
701: char buf[20];
702: sprintf(buf, "%d-%d", news->first, news->last);
703: status = SendCommand(request, news, "XOVER", buf);
704: if (status == HT_WOULD_BLOCK)
705: return HT_OK;
706: else if (status == HT_ERROR)
707: news->state = NEWS_ERROR;
708: news->format = WWW_NNTP_OVER;
709: news->sent = YES;
710: } else {
711: status = HTSocketRead(request, net);
712: if (status == HT_WOULD_BLOCK)
713: return HT_OK;
714: else if (status == HT_OK)
715: news->state = NEWS_NEED_BODY;
716: else if (status == HT_LOADED) {
717: if (news->repcode/100 == 2)
718: news->state = NEWS_SUCCESS;
719: else {
720: news->format = WWW_NNTP_HEAD;
721: news->state = NEWS_NEED_HEAD;
722: }
723: } else
724: news->state = NEWS_ERROR;
725: news->sent = NO;
726: }
727: break;
1.1 timbl 728:
2.39 frystyk 729: case NEWS_NEED_HEAD:
730: if (!news->sent) {
731: char buf[10];
732: sprintf(buf, "%d", news->current++);
733: status = SendCommand(request, news, "HEAD", buf);
734: if (status == HT_WOULD_BLOCK)
2.36 frystyk 735: return HT_OK;
2.39 frystyk 736: else if (status == HT_ERROR)
737: news->state = NEWS_ERROR;
738: news->sent = YES;
1.1 timbl 739: } else {
2.39 frystyk 740: status = HTSocketRead(request, net);
741: if (status == HT_WOULD_BLOCK)
742: return HT_OK;
743: else if (status == HT_LOADED) {
744: if (news->repcode/100 == 2) {
745: if (news->current > news->last)
746: news->state = NEWS_SUCCESS;
747: } else
748: news->state = NEWS_ERROR;
749: } else
750: news->state = NEWS_ERROR;
751: news->sent = NO;
752: }
753: break;
754:
755: case NEWS_NEED_POST:
756: request->input_stream =
757: HTNewsPost_new(request, HTBuffer_new(request->input_stream,
758: request, 512));
759:
760: /* Remember to convert to CRLF */
761:
762: news->state = NEWS_NEED_BODY;
763: break;
764:
765: case NEWS_NEED_BODY:
766: if (ops == FD_WRITE || ops == FD_NONE) {
767: if (HTRequest_isDestination(request)) {
768: HTNet *srcnet = request->source->net;
769: HTEvent_Register(srcnet->sockfd, request->source,
770: (SockOps) FD_READ,
771: HTLoadNews, srcnet->priority);
2.36 frystyk 772: return HT_OK;
2.21 frystyk 773: }
2.41 frystyk 774: status = request->PostCallback ?
775: request->PostCallback(request, request->input_stream) :
2.39 frystyk 776: (*request->input_stream->isa->flush)(request->input_stream);
777: if (status == HT_WOULD_BLOCK)
778: return HT_OK;
779: else
780: ops = FD_READ; /* Trick to ensure that we do READ */
781: } else if (ops == FD_READ) {
782: status = HTSocketRead(request, net);
783: if (status == HT_WOULD_BLOCK)
784: return HT_OK;
785: else if (status == HT_LOADED)
786: news->state = NEWS_SUCCESS;
787: else
788: news->state = NEWS_ERROR;
789: } else {
790: news->state = NEWS_ERROR;
1.1 timbl 791: }
2.39 frystyk 792: break;
793:
794: case NEWS_SUCCESS:
795: if (HTRequest_isPostWeb(request)) {
796: BOOL main = HTRequest_isMainDestination(request);
797: if (HTRequest_isDestination(request)) {
798: HTLink *link =
799: HTAnchor_findLink((HTAnchor *) request->source->anchor,
800: (HTAnchor *) request->anchor);
2.47 frystyk 801: HTLink_setResult(link, HT_LINK_OK);
2.39 frystyk 802: }
803: HTRequest_removeDestination(request);
804: HTNewsCleanup(request, main ? HT_LOADED : HT_IGNORE);
805: } else
806: HTNewsCleanup(request, HT_LOADED);
807: return HT_OK;
808: break;
809:
810: case NEWS_ERROR:
811: /* Clean up the other connections or just this one */
812: if (HTRequest_isPostWeb(request)) {
813: BOOL main = HTRequest_isMainDestination(request);
814: HTRequest_killPostWeb(request);
815: if (HTRequest_isDestination(request)) {
816: HTLink *link =
817: HTAnchor_findLink((HTAnchor *) request->source->anchor,
818: (HTAnchor *) request->anchor);
2.47 frystyk 819: HTLink_setResult(link, HT_LINK_ERROR);
2.39 frystyk 820: }
821: HTRequest_removeDestination(request);
822: HTNewsCleanup(request, main ? HT_ERROR : HT_IGNORE);
823: } else
824: HTNewsCleanup(request, HT_ERROR);
825: return HT_OK;
826: break;
1.1 timbl 827: }
2.39 frystyk 828: } /* End of while(1) */
1.1 timbl 829: }
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