Annotation of libwww/Library/src/HTTPReq.c, revision 2.4
2.1 frystyk 1: /* HTTPReq.c
2: ** MULTITHREADED IMPLEMENTATION OF HTTP CLIENT
3: **
4: ** This module implements the output stream for HTTP used for sending
5: ** requests with or without a entity body.
6: **
7: ** History:
8: ** Jan 95 HFN Written from scratch
9: **
10: */
11:
12: /* Library Includes */
13: #include "tcp.h"
14: #include "HTUtils.h"
15: #include "HTString.h"
16: #include "HTParse.h"
2.4 ! frystyk 17: #include "HTFormat.h"
2.1 frystyk 18: #include "HTThread.h"
19: #include "HTTCP.h"
20: #include "HTWriter.h"
21: #include "HTChunk.h"
22: #include "HTTPReq.h" /* Implements */
23:
24: /* Type definitions and global variables etc. local to this module */
25: extern char * HTAppName; /* Application name: please supply */
26: extern char * HTAppVersion; /* Application version: please supply */
27: PUBLIC char * HTProxyHeaders = NULL; /* Headers to pass as-is */
28:
29: /* Macros and other defines */
30: #define HTTP_VERSION "HTTP/1.0"
31: #define MIME_VERSION "MIME/1.0"
32: #define PUTC(c) (*me->target->isa->put_character)(me->target, c)
33: #define PUTS(s) (*me->target->isa->put_string)(me->target, s)
34: #define PUTBLOCK(b, l) (*me->target->isa->put_block)(me->target, b, l)
35: #define FREE_TARGET (*me->target->isa->_free)(me->target)
36: #define ABORT_TARGET (*me->target->isa->abort)(me->target, e)
37:
38: /* Type definitions and global variables etc. local to this module */
39:
40: PRIVATE char linebuf[256]; /* @@@ */
41:
42: struct _HTStream {
43: CONST HTStreamClass * isa;
44: HTStream * target;
45: char * url;
46: HTRequest * request;
47: HTChunk * buffer;
48: BOOL transparent;
49: };
50:
51: /* ------------------------------------------------------------------------- */
52: /* HTTP Output Request Stream */
53: /* ------------------------------------------------------------------------- */
54:
55: /* HTTPMakeRequest
56: **
57: ** This function composes the HTTP request header.
58: */
59: PRIVATE void HTTPMakeRequest ARGS2(HTStream *, me, HTRequest *, request)
60: {
61: HTChunk *header = me->buffer;
62: HTParentAnchor *entity =
63: (request->CopyRequest && request->CopyRequest->anchor) ?
64: request->CopyRequest->anchor : request->anchor;
65:
66: /* Generate the HTTP/1.0 RequestLine */
67: if (request->method != METHOD_INVALID) {
68: HTChunkPuts(header, HTMethod_name(request->method));
69: HTChunkPutc(header, ' ');
70: } else
71: HTChunkPuts(header, "GET ");
72:
73: /* If we are using a proxy then only take the `path' info in the URL */
74: {
75: char *fullurl = HTParse(me->url, "", PARSE_PATH|PARSE_PUNCTUATION);
76: if (request->using_proxy) {
77: HTChunkPuts(header, fullurl+1);
78: } else {
79: HTChunkPuts(header, fullurl);
80: }
81: free(fullurl);
82: }
83: HTChunkPutc(header, ' ');
84: HTChunkPuts(header, HTTP_VERSION);
85: HTChunkPutc(header, CR);
86: HTChunkPutc(header, LF);
87:
2.4 ! frystyk 88: /* General Headers */
! 89: if (request->GenMask & HT_DATE) {
2.1 frystyk 90: time_t local = time(NULL);
91: sprintf(linebuf, "Date: %s%c%c", HTDateTimeStr(&local, NO), CR,LF);
92: HTChunkPuts(header, linebuf);
93: }
2.4 ! frystyk 94: if (request->GenMask & HT_FORWARDED) { /* @@@@@@ */
! 95: }
! 96: if (request->GenMask & HT_MESSAGE_ID) {
2.1 frystyk 97: CONST char *msgid = HTMessageIdStr();
98: if (msgid) {
99: sprintf(linebuf, "Message-ID: %s%c%c", msgid, CR, LF);
100: HTChunkPuts(header, linebuf);
101: }
102: }
2.4 ! frystyk 103: if (request->GenMask & HT_MIME) {
2.1 frystyk 104: sprintf(linebuf, "MIME-Version: %s%c%c", MIME_VERSION, CR, LF);
105: HTChunkPuts(header, linebuf);
106: }
107:
2.4 ! frystyk 108: /* Request Headers */
! 109: if (request->RequestMask & HT_ACCEPT_TYPE) {
2.1 frystyk 110: int list;
111: HTList *cur;
112: for (list=0; list<2; list++) {
113: if ((!list && ((cur=HTConversions) != NULL)) ||
114: (list && ((cur=request->conversions) != NULL))) {
2.4 ! frystyk 115: HTPresentation *pres;
2.1 frystyk 116: while ((pres =(HTPresentation *) HTList_nextObject(cur))) {
117: if (pres->rep_out == WWW_PRESENT) {
118: if (pres->quality != 1.0) {
119: sprintf(linebuf, "Accept: %s; q=%1.1f%c%c",
120: HTAtom_name(pres->rep),
121: pres->quality, CR, LF);
122: } else {
123: sprintf(linebuf, "Accept: %s%c%c",
124: HTAtom_name(pres->rep), CR, LF);
125: }
126: HTChunkPuts(header, linebuf);
127: }
128: }
129: }
130: }
131: }
2.4 ! frystyk 132: if (request->RequestMask & HT_ACCEPT_CHAR) {
! 133: BOOL first=YES;
! 134: int list;
! 135: HTList *cur;
! 136: for (list=0; list<2; list++) {
! 137: if ((!list && ((cur=HTCharsets) != NULL)) ||
! 138: (list && ((cur=request->charsets) != NULL))) {
! 139: HTAcceptNode *pres;
! 140: if (first) {
! 141: HTChunkPuts(header, "Accept-Charset: ");
! 142: first=NO;
! 143: }
! 144: while ((pres = (HTAcceptNode *) HTList_nextObject(cur))) {
! 145: if (cur->next)
! 146: sprintf(linebuf, "%s,", HTAtom_name(pres->atom));
! 147: else
! 148: sprintf(linebuf, "%s%c%c", HTAtom_name(pres->atom),
! 149: CR, LF);
! 150: HTChunkPuts(header, linebuf);
! 151: }
! 152: }
! 153: }
! 154: }
! 155: if (request->RequestMask & HT_ACCEPT_ENC) {
! 156: BOOL first=YES;
! 157: int list;
! 158: HTList *cur;
! 159: for (list=0; list<2; list++) {
! 160: if ((!list && ((cur=HTEncodings) != NULL)) ||
! 161: (list && ((cur=request->encodings) != NULL))) {
! 162: HTAcceptNode *pres;
! 163: if (first) {
! 164: HTChunkPuts(header, "Accept-Encoding: ");
! 165: first=NO;
! 166: }
! 167: while ((pres = (HTAcceptNode *) HTList_nextObject(cur))) {
! 168: if (cur->next)
! 169: sprintf(linebuf, "%s,", HTAtom_name(pres->atom));
! 170: else
! 171: sprintf(linebuf, "%s%c%c", HTAtom_name(pres->atom),
! 172: CR, LF);
! 173: HTChunkPuts(header, linebuf);
! 174: }
! 175: }
! 176: }
! 177: }
! 178: if (request->RequestMask & HT_ACCEPT_LAN) {
! 179: BOOL first=YES;
! 180: int list;
! 181: HTList *cur;
! 182: for (list=0; list<2; list++) {
! 183: if ((!list && ((cur=HTLanguages) != NULL)) ||
! 184: (list && ((cur=request->languages) != NULL))) {
! 185: HTAcceptNode *pres;
! 186: if (first) {
! 187: HTChunkPuts(header, "Accept-Language: ");
! 188: first=NO;
! 189: }
! 190: while ((pres = (HTAcceptNode *) HTList_nextObject(cur))) {
! 191: if (cur->next)
! 192: sprintf(linebuf, "%s,", HTAtom_name(pres->atom));
! 193: else
! 194: sprintf(linebuf, "%s%c%c", HTAtom_name(pres->atom),
! 195: CR, LF);
! 196: HTChunkPuts(header, linebuf);
! 197: }
! 198: }
! 199: }
! 200: }
! 201: if (request->authorization != NULL) { /* Put out authorization */
2.1 frystyk 202: sprintf(linebuf, "Authorization: %s%c%c", request->authorization,
203: CR, LF);
204: HTChunkPuts(header, linebuf);
205: }
2.4 ! frystyk 206: if (request->RequestMask & HT_FROM) {
2.1 frystyk 207: CONST char *mailaddress = HTGetMailAddress();
208: if (mailaddress) {
209: sprintf(linebuf, "From: %s%c%c", mailaddress, CR, LF);
210: HTChunkPuts(header, linebuf);
211: }
212: }
2.4 ! frystyk 213: if (request->RequestMask & HT_PRAGMA) {
2.1 frystyk 214: sprintf(linebuf, "Pragma: %s%c%c", "no-cache", CR, LF);
215: HTChunkPuts(header, linebuf);
216: }
2.4 ! frystyk 217: if (request->RequestMask & HT_REFERER && request->parentAnchor) {
2.1 frystyk 218: char *act = HTAnchor_address((HTAnchor *) request->anchor);
219: char *parent = HTAnchor_address((HTAnchor *) request->parentAnchor);
220: char *relative = HTParse(parent, act,
221: PARSE_ACCESS|PARSE_HOST|PARSE_PATH|PARSE_PUNCTUATION);
222: if (relative && *relative) {
223: sprintf(linebuf, "Referer: %s%c%c", parent, CR, LF);
224: HTChunkPuts(header, linebuf);
225: }
226: free(act);
227: free(parent);
228: free(relative);
229: }
2.4 ! frystyk 230: if (request->RequestMask & HT_USER_AGENT) {
2.1 frystyk 231: sprintf(linebuf, "User-Agent: %s/%s libwww/%s%c%c",
232: HTAppName ? HTAppName : "unknown",
233: HTAppVersion ? HTAppVersion : "0.0",
234: HTLibraryVersion, CR, LF);
235: HTChunkPuts(header, linebuf);
236: }
237:
238: /* Now put out entity headers if we are using PUT or POST. If we have a
239: ** PostAnchor then we take the information from this and uses the
240: ** destination anchor to contain the reply. Otherwise, we have created an
241: ** anchor (using internal editing etc) and we can use the destination
242: ** anchor directly.
243: */
244: if (request->method==METHOD_PUT || request->method==METHOD_POST) {
2.2 frystyk 245: if (request->EntityMask & HT_ALLOW) { /* @@@@@@@@@@ */
2.1 frystyk 246:
247: }
248: if (request->EntityMask & HT_CONTENT_ENCODING &&
249: entity->content_encoding) {
250: sprintf(linebuf, "Content-Encoding: %s%c%c",
251: HTAtom_name(entity->content_encoding), CR, LF);
252: HTChunkPuts(header, linebuf);
253: }
2.3 frystyk 254: if (request->EntityMask & HT_CONTENT_LANGUAGE) { /* @@@ LIST @@@ */
255: sprintf(linebuf, "Content-Language: %s%c%c",
256: HTAtom_name(entity->content_language), CR, LF);
257: HTChunkPuts(header, linebuf);
2.1 frystyk 258: }
259: if (request->EntityMask & HT_CONTENT_LENGTH) { /* Must be there!!! */
260: sprintf(linebuf, "Content-Length: %ld%c%c",
261: entity->content_length, CR, LF);
262: HTChunkPuts(header, linebuf);
263: }
264: if (request->EntityMask & HT_CTE && entity->cte) {
265: sprintf(linebuf, "Content-Transfer-Encoding: %s%c%c",
266: HTAtom_name(entity->cte), CR, LF);
267: HTChunkPuts(header, linebuf);
268: }
269: if (request->EntityMask & HT_CONTENT_TYPE && entity->content_type) {
2.2 frystyk 270: sprintf(linebuf, "Content-Type: %s",
271: HTAtom_name(entity->content_type));
272: if (entity->charset) {
273: strcat(linebuf, "; charset=");
274: strcat(linebuf, HTAtom_name(entity->charset));
275: }
276: if (entity->level) {
277: strcat(linebuf, "; level=");
278: strcat(linebuf, HTAtom_name(entity->level));
279: }
2.1 frystyk 280: HTChunkPuts(header, linebuf);
2.2 frystyk 281: HTChunkPutc(header, CR);
282: HTChunkPutc(header, LF);
2.1 frystyk 283: }
284: if (request->EntityMask & HT_DERIVED_FROM && entity->derived_from) {
285: sprintf(linebuf, "Derived-From: %s%c%c", entity->derived_from,
286: CR, LF);
287: HTChunkPuts(header, linebuf);
288: }
2.2 frystyk 289: if (request->EntityMask & HT_EXPIRES) { /* @@@@@@@@@@ */
2.1 frystyk 290:
291: }
2.2 frystyk 292: if (request->EntityMask & HT_LAST_MODIFIED) { /* @@@@@@@@@@ */
2.1 frystyk 293:
294: }
2.2 frystyk 295: if (request->EntityMask & HT_LINK) { /* @@@@@@@@@@ */
2.1 frystyk 296:
297: }
2.2 frystyk 298: if (request->EntityMask & HT_TITLE) { /* @@@@@@@@@@ */
2.1 frystyk 299:
300: }
2.2 frystyk 301: if (request->EntityMask & HT_URI) { /* @@@@@@@@@@ */
2.1 frystyk 302:
303: }
304: if (request->EntityMask & HT_VERSION && entity->version) {
305: sprintf(linebuf, "Version: %s%c%c", entity->version, CR, LF);
306: HTChunkPuts(header, linebuf);
307: }
308: }
309:
310: /* Put out extra information if any */
311: if (request->ExtraHeaders)
312: HTChunkPuts(header, request->ExtraHeaders);
313:
314: HTChunkPutc(header, CR); /* Blank line means "end" */
315: HTChunkPutc(header, LF);
316: HTChunkTerminate(header);
317: if (PROT_TRACE)
318: fprintf(TDEST, "HTTP Tx..... %s", header->data);
319: }
320:
321: PRIVATE int HTTPRequest_put_character ARGS2(HTStream *, me, char, c)
322: {
323: if (!me->target)
324: return HT_WOULD_BLOCK;
325: else if (me->transparent)
326: return PUTC(c);
327: else {
328: int status;
329: HTTPMakeRequest(me, me->request); /* Generate header */
330: if ((status=PUTBLOCK(me->buffer->data, me->buffer->size-1)) == HT_OK) {
331: me->transparent = YES;
332: return PUTC(c);
333: }
334: return status;
335: }
336: }
337:
338: PRIVATE int HTTPRequest_put_string ARGS2(HTStream *, me, CONST char*, s)
339: {
340: if (!me->target)
341: return HT_WOULD_BLOCK;
342: else if (me->transparent)
343: return PUTS(s);
344: else {
345: int status;
346: HTTPMakeRequest(me, me->request); /* Generate header */
347: if ((status=PUTBLOCK(me->buffer->data, me->buffer->size-1)) == HT_OK) {
348: me->transparent = YES;
349: return PUTS(s);
350: }
351: return status;
352: }
353: }
354:
355: PRIVATE int HTTPRequest_put_block ARGS3(HTStream *, me, CONST char*, b, int, l)
356: {
357: if (!me->target)
358: return HT_WOULD_BLOCK;
359: else if (me->transparent)
360: return PUTBLOCK(b, l);
361: else {
362: int status;
363: HTTPMakeRequest(me, me->request); /* Generate header */
364: if ((status=PUTBLOCK(me->buffer->data, me->buffer->size-1)) == HT_OK) {
365: me->transparent = YES;
366: return PUTBLOCK(b, l);
367: }
368: return status;
369: }
370: }
371:
372: /*
373: ** Flushes data but doesn't free stream object
374: */
375: PRIVATE int HTTPRequest_flush ARGS1(HTStream *, me)
376: {
377: if (!me->target)
378: return HT_WOULD_BLOCK;
379: else if (!me->transparent) {
380: int status;
381: HTTPMakeRequest(me, me->request); /* Generate header */
382: if ((status=PUTBLOCK(me->buffer->data, me->buffer->size-1)) == HT_OK)
383: me->transparent = YES;
384: else
385: return status;
386: }
387: return HT_OK;
388: }
389:
390: /*
391: ** Flushes data and frees stream object
392: */
393: PRIVATE int HTTPRequest_free ARGS1(HTStream *, me)
394: {
395: if (!me->target)
396: return HT_WOULD_BLOCK;
397: else if (!me->transparent) {
398: int status;
399: HTTPMakeRequest(me, me->request); /* Generate header */
400: if ((status=PUTBLOCK(me->buffer->data, me->buffer->size-1)) == HT_OK)
401: me->transparent = YES;
402: else
403: return status;
404: }
405: if (me->target)
406: FREE_TARGET;
407: HTChunkFree(me->buffer);
408: free(me);
409: return HT_OK;
410: }
411:
412: PRIVATE int HTTPRequest_abort ARGS2(HTStream *, me, HTError, e)
413: {
414: if (me->target)
415: ABORT_TARGET;
416: HTChunkFree(me->buffer);
417: free(me);
418: if (PROT_TRACE)
419: fprintf(TDEST, "HTTPRequest. ABORTING...\n");
420: return HT_ERROR;
421: }
422:
423: /* HTTPRequest Stream
424: ** -----------------
425: */
426: PRIVATE CONST HTStreamClass HTTPRequestClass =
427: {
428: "HTTPRequest",
429: HTTPRequest_flush,
430: HTTPRequest_free,
431: HTTPRequest_abort,
432: HTTPRequest_put_character,
433: HTTPRequest_put_string,
434: HTTPRequest_put_block
435: };
436:
437: PUBLIC HTStream * HTTPRequest_new ARGS2(HTRequest *, request,
438: HTStream *, target)
439: {
440: HTStream * me = (HTStream *) calloc(1, sizeof(HTStream));
441: if (!me) outofmem(__FILE__, "HTTPRequest_new");
442: me->isa = &HTTPRequestClass;
443: me->target = target;
444: me->url = HTAnchor_physical(request->anchor);
445: me->request = request;
446: me->buffer = HTChunkCreate(512);
447: me->transparent = NO;
448: return me;
449: }
450:
451:
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