Annotation of libwww/Library/src/HTMIMERq.c, revision 2.32
2.1 frystyk 1: /* HTMIMERq.c
2.10 frystyk 2: ** MIME ENTITY HEADERS GENERATION
2.1 frystyk 3: **
2.15 frystyk 4: ** (c) COPYRIGHT MIT 1995.
5: ** Please first read the full copyright statement in the file COPYRIGH.
2.32 ! frystyk 6: ** @(#) $Id: HTMIMERq.c,v 2.31 1997/11/26 16:05:30 frystyk Exp $
2.15 frystyk 7: **
2.1 frystyk 8: ** This module implements the output stream for MIME used for sending
2.10 frystyk 9: ** requests with a entity body to HTTP, NEWS, etc. or for generating
10: ** responses
2.1 frystyk 11: **
12: ** History:
13: ** Jan 95 HFN Written
14: */
15:
16: /* Library Includes */
2.14 frystyk 17: #include "sysdep.h"
2.21 frystyk 18: #include "WWWUtil.h"
19: #include "WWWCore.h"
2.7 frystyk 20: #include "HTAncMan.h"
2.1 frystyk 21: #include "HTNetMan.h"
2.21 frystyk 22: #include "HTReqMan.h"
2.2 frystyk 23: #include "HTHeader.h"
2.21 frystyk 24: #include "HTMIMERq.h" /* Implements */
2.1 frystyk 25:
2.17 frystyk 26: #define PUTC(c) (*me->target->isa->put_character)(me->target, c)
27: #define PUTS(s) (*me->target->isa->put_string)(me->target, s)
2.1 frystyk 28: #define PUTBLOCK(b, l) (*me->target->isa->put_block)(me->target, b, l)
29:
30: struct _HTStream {
2.14 frystyk 31: const HTStreamClass * isa;
2.1 frystyk 32: HTStream * target;
33: HTRequest * request;
2.10 frystyk 34: BOOL endHeader;
2.1 frystyk 35: BOOL transparent;
36: };
37:
2.27 frystyk 38: #define HT_MAX_WAIT 8 /* Max number of secs to wait for PUT */
2.25 frystyk 39:
2.32 ! frystyk 40: PRIVATE int MIMERequest_put_block (HTStream * me, const char * b, int l);
! 41:
2.1 frystyk 42: /* ------------------------------------------------------------------------- */
43: /* MIME Output Request Stream */
44: /* ------------------------------------------------------------------------- */
45:
46: /* MIMEMakeRequest
47: ** ---------------
2.10 frystyk 48: ** Generates the BODY parts of a MIME message.
2.1 frystyk 49: */
2.2 frystyk 50: PRIVATE int MIMEMakeRequest (HTStream * me, HTRequest * request)
2.1 frystyk 51: {
2.17 frystyk 52: char crlf[3];
2.10 frystyk 53: char linebuf[256]; /* @@@ */
2.21 frystyk 54: HTParentAnchor * entity = HTRequest_entityAnchor(request);
55: HTEnHd EntityMask = HTRequest_enHd(request);
2.17 frystyk 56: *crlf = CR; *(crlf+1) = LF; *(crlf+2) = '\0';
2.1 frystyk 57:
2.21 frystyk 58: if (EntityMask & HT_E_ALLOW) {
2.10 frystyk 59: /* @@@@@@@@@@ */
60: }
2.21 frystyk 61: if (EntityMask & HT_E_CONTENT_ENCODING && entity->content_encoding){
2.17 frystyk 62: BOOL first = YES;
63: HTList * cur = entity->content_encoding;
64: HTEncoding pres;
65: while ((pres = (HTEncoding) HTList_nextObject(cur))) {
66: if (first) {
67: PUTS("Content-Encoding: ");
68: first = NO;
69: } else
70: PUTC(',');
71: PUTS(HTAtom_name(pres));
72: }
73: if (!first) PUTBLOCK(crlf, 2);
2.1 frystyk 74: }
2.10 frystyk 75:
2.21 frystyk 76: if (EntityMask & HT_E_CONTENT_LANGUAGE && entity->content_language){
2.17 frystyk 77: BOOL first = YES;
78: HTList * cur = entity->content_language;
79: HTLanguage pres;
80: while ((pres = (HTLanguage) HTList_nextObject(cur))) {
81: if (first) {
82: PUTS("Content-Language: ");
83: first = NO;
84: } else
85: PUTC(',');
86: PUTS(HTAtom_name(pres));
87: }
88: if (!first) PUTBLOCK(crlf, 2);
2.1 frystyk 89: }
2.21 frystyk 90: if (EntityMask & HT_E_CONTENT_LENGTH) {
2.20 frystyk 91: if (entity->content_length >= 0) {
92: sprintf(linebuf, "Content-Length: %ld%c%c",
93: entity->content_length, CR, LF);
94: PUTBLOCK(linebuf, (int) strlen(linebuf));
95: } else {
96: HTEncoding chunked = HTAtom_for("chunked");
97: HTAnchor_setTransfer(entity, chunked);
98: }
2.10 frystyk 99: }
2.21 frystyk 100: if (EntityMask & HT_E_CTE && entity->transfer) {
2.20 frystyk 101: HTEncoding transfer = HTAnchor_transfer(entity);
102: if (!HTFormat_isUnityTransfer(transfer)) {
2.31 frystyk 103: sprintf(linebuf, "Content-Transfer-Encoding: %s%c%c",
2.20 frystyk 104: HTAtom_name(transfer), CR, LF);
105: PUTBLOCK(linebuf, (int) strlen(linebuf));
106: }
2.1 frystyk 107: }
2.21 frystyk 108: if (EntityMask & HT_E_CONTENT_TYPE && entity->content_type &&
2.19 frystyk 109: entity->content_type != WWW_UNKNOWN) {
110: HTAssocList * parameters = HTAnchor_formatParam(entity);
111:
112: /* Output the content type */
113: PUTS("Content-Type: ");
114: PUTS(HTAtom_name(entity->content_type));
115:
116: /* Add all parameters */
117: if (parameters) {
118: HTAssoc * pres;
119: while ((pres = (HTAssoc *) HTAssocList_nextObject(parameters))) {
120: PUTS(";");
121: PUTS(HTAssoc_name(pres));
122: PUTS("=");
123: PUTS(HTAssoc_value(pres));
124: }
125: }
126: PUTBLOCK(crlf, 2);
2.10 frystyk 127: }
2.21 frystyk 128: if (EntityMask & HT_E_DERIVED_FROM && entity->derived_from) {
2.10 frystyk 129: sprintf(linebuf, "Derived-From: %s%c%c", entity->derived_from,
130: CR, LF);
2.2 frystyk 131: PUTBLOCK(linebuf, (int) strlen(linebuf));
2.1 frystyk 132: }
2.21 frystyk 133: if (EntityMask & HT_E_EXPIRES) {
2.10 frystyk 134: if (entity->expires != -1) {
135: sprintf(linebuf, "Expires: %s%c%c",
136: HTDateTimeStr(&entity->expires, NO), CR,LF);
2.2 frystyk 137: PUTBLOCK(linebuf, (int) strlen(linebuf));
2.1 frystyk 138: }
2.10 frystyk 139: }
2.21 frystyk 140: if (EntityMask & HT_E_LAST_MODIFIED) {
2.10 frystyk 141: if (entity->last_modified != -1) {
142: sprintf(linebuf, "Last-Modified: %s%c%c",
143: HTDateTimeStr(&entity->last_modified, NO), CR,LF);
2.2 frystyk 144: PUTBLOCK(linebuf, (int) strlen(linebuf));
2.1 frystyk 145: }
2.10 frystyk 146: }
2.21 frystyk 147: if (EntityMask & HT_E_LINK) { /* @@@@@@@@@@ */
2.1 frystyk 148:
2.10 frystyk 149: }
2.21 frystyk 150: if (EntityMask & HT_E_TITLE) { /* @@@@@@@@@@ */
2.1 frystyk 151:
2.10 frystyk 152: }
2.21 frystyk 153: if (EntityMask & HT_E_URI) { /* @@@@@@@@@@ */
2.1 frystyk 154:
155: }
2.21 frystyk 156: if (EntityMask & HT_E_VERSION && entity->version) {
2.10 frystyk 157: sprintf(linebuf, "Version: %s%c%c", entity->version, CR, LF);
158: PUTBLOCK(linebuf, (int) strlen(linebuf));
159: }
160: if (me->endHeader) {
161: sprintf(linebuf, "%c%c", CR, LF); /* Blank line means "end" */
162: PUTBLOCK(linebuf, (int) strlen(linebuf));
2.2 frystyk 163: }
2.20 frystyk 164:
165: /*
166: ** Now make sure that the body has the right format
167: */
168:
169: /* Handle any Transfer encoding */
170: {
171: HTEncoding transfer = HTAnchor_transfer(entity);
172: if (!HTFormat_isUnityTransfer(transfer)) {
173: if (STREAM_TRACE) HTTrace("Building.... C-T-E stack\n");
174: me->target = HTTransferCodingStack(transfer, me->target,
175: request, NULL, YES);
176: }
177: }
178:
179: /* Handle any Content Encoding */
180: {
181: HTList * cc = HTAnchor_encoding(entity);
182: if (cc) {
183: if (STREAM_TRACE) HTTrace("Building.... C-E stack\n");
184: me->target = HTContentDecodingStack(cc, me->target, request, NULL);
185: }
186: }
187:
2.13 eric 188: if (PROT_TRACE) HTTrace("MIME........ Generating Entity Headers\n");
2.2 frystyk 189: return HT_OK;
2.1 frystyk 190: }
191:
2.32 ! frystyk 192: /*
! 193: ** Flushes header but doesn't free stream object
! 194: */
! 195: PRIVATE int MIMERequest_flush (HTStream * me)
! 196: {
! 197: int status = MIMERequest_put_block(me, NULL, 0);
! 198: return status==HT_OK ? (*me->target->isa->flush)(me->target) : status;
! 199: }
! 200:
2.14 frystyk 201: PRIVATE int MIMERequest_put_block (HTStream * me, const char * b, int l)
2.1 frystyk 202: {
2.23 frystyk 203: HTNet * net = HTRequest_net(me->request);
2.32 ! frystyk 204: if (!me->transparent) {
2.1 frystyk 205: MIMEMakeRequest(me, me->request);
2.9 frystyk 206: me->transparent = YES;
2.22 frystyk 207:
208: /*
2.32 ! frystyk 209: ** First we only send the header
2.22 frystyk 210: */
211: if (HTMethod_hasEntity(HTRequest_method(me->request))) {
212: HTHost * host = HTNet_host(net);
213: char * class = HTHost_class(host);
2.23 frystyk 214: if (class && !strcmp(class, "http")) {
2.32 ! frystyk 215: MIMERequest_flush(me);
! 216: return HT_PAUSE;
2.22 frystyk 217: }
218: }
2.1 frystyk 219: }
2.32 ! frystyk 220:
2.23 frystyk 221: /* Check if we have written it all */
222: if (b) {
223: HTParentAnchor * entity = HTRequest_entityAnchor(me->request);
224: long cl = HTAnchor_length(entity);
225: return (cl>=0 && HTNet_bytesWritten(net) >= cl) ?
226: HT_LOADED : PUTBLOCK(b, l);
227: }
228: return HT_OK;
2.1 frystyk 229: }
230:
231: PRIVATE int MIMERequest_put_character (HTStream * me, char c)
232: {
233: return MIMERequest_put_block(me, &c, 1);
234: }
235:
2.14 frystyk 236: PRIVATE int MIMERequest_put_string (HTStream * me, const char * s)
2.1 frystyk 237: {
238: return MIMERequest_put_block(me, s, strlen(s));
239: }
240:
241: /*
242: ** Flushes data and frees stream object
243: */
244: PRIVATE int MIMERequest_free (HTStream * me)
245: {
246: int status = MIMERequest_flush(me);
247: if (status != HT_WOULD_BLOCK) {
248: if ((status = (*me->target->isa->_free)(me->target)) == HT_WOULD_BLOCK)
249: return HT_WOULD_BLOCK;
2.12 frystyk 250: HT_FREE(me);
2.1 frystyk 251: }
252: return status;
253: }
254:
2.4 frystyk 255: PRIVATE int MIMERequest_abort (HTStream * me, HTList * e)
2.1 frystyk 256: {
257: if (me->target) (*me->target->isa->abort)(me->target, e);
2.12 frystyk 258: HT_FREE(me);
2.13 eric 259: if (PROT_TRACE) HTTrace("MIMERequest. ABORTING...\n");
2.1 frystyk 260: return HT_ERROR;
261: }
262:
263: /* MIMERequest Stream
264: ** -----------------
265: */
2.14 frystyk 266: PRIVATE const HTStreamClass MIMERequestClass =
2.1 frystyk 267: {
268: "MIMERequest",
269: MIMERequest_flush,
270: MIMERequest_free,
271: MIMERequest_abort,
272: MIMERequest_put_character,
273: MIMERequest_put_string,
274: MIMERequest_put_block
275: };
276:
2.10 frystyk 277: PUBLIC HTStream * HTMIMERequest_new (HTRequest * request, HTStream * target,
278: BOOL endHeader)
2.1 frystyk 279: {
2.12 frystyk 280: HTStream * me;
281: if ((me = (HTStream *) HT_CALLOC(1, sizeof(HTStream))) == NULL)
282: HT_OUTOFMEM("HTMIMERequest_new");
2.1 frystyk 283: me->isa = &MIMERequestClass;
284: me->target = target;
285: me->request = request;
2.10 frystyk 286: me->endHeader = endHeader;
2.1 frystyk 287: me->transparent = NO;
288: return me;
289: }
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