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1.1 paf 1:
2: /** @file
3: Parser: @b mail class.
4: relies on gmime library, by Jeffrey Stedfast <fejj@helixcode.com>
5:
6: Copyright(c) 2001, 2002 ArtLebedev Group(http://www.artlebedev.com)
7: Author: Alexandr Petrosian <paf@design.ru>(http://paf.design.ru)
8:
1.10 ! paf 9: $Id: pa_vmail.C,v 1.9 2002/07/31 14:31:02 paf Exp $
1.1 paf 10: */
11:
12: #include "pa_sapi.h"
13: #include "pa_vmail.h"
14: #include "pa_vstring.h"
15: #include "pa_request.h"
16: #include "pa_common.h"
17: #include "pa_charset.h"
18: #include "pa_charsets.h"
19: #include "pa_vdate.h"
20: #include "pa_vfile.h"
21: #include "pa_uue.h"
22:
1.3 paf 23: #ifdef WITH_MAILRECEIVE
1.4 paf 24: extern "C" {
1.1 paf 25: #include "gmime.h"
1.4 paf 26: }
1.1 paf 27: #endif
28:
29: // defines
30:
31: #define RAW_NAME "raw"
32:
33: // internals
34:
35: enum PartType {
36: P_TEXT,
37: P_HTML,
38: P_FILE,
39: P_MESSAGE,
40:
41: P_TYPES_COUNT
42: };
43:
44: static const char * const part_name_starts[P_TYPES_COUNT]={"text", "html", "file", "message"};
45:
46: // VMail
47:
48: extern Methoded *mail_base_class;
49:
50: VMail::VMail(Pool& apool) : VStateless_class(apool, 0, mail_base_class),
51: vreceived(apool) {
52: }
53:
1.3 paf 54: #ifdef WITH_MAILRECEIVE
1.1 paf 55:
56: static const String& maybeUpperCase(Pool& pool, const String& src, bool toUpperCase) {
57: return toUpperCase?src.change_case(pool, String::CC_UPPER):src;
58: }
59:
60: static void UTF8toSource(Pool& pool, const char *source_body, size_t source_content_length,
61: const void *& dest_body, size_t& dest_content_length) {
62: if(source_body) {
63: if(!source_content_length)
64: source_content_length=strlen(source_body);
65: Charset::transcode(pool,
66: *utf8_charset, source_body, source_content_length,
67: pool.get_source_charset(), dest_body, dest_content_length);
68: } else {
69: dest_body=0;
70: dest_content_length=0;
71: }
72: }
73:
74: static void putReceived(Hash& received, const char *name, Value *value, bool nameToUpperCase=false) {
75: Pool& pool=received.pool();
76: if(name && value) {
77: received.put(
78: maybeUpperCase(pool, String::OnPool(pool, name, 0, true/*tainted*/), nameToUpperCase),
79: value);
80: }
81: }
82:
83: static void putReceived(Hash& received, const char *name, const char *value, size_t value_size=0, bool nameToUpperCase=false) {
84: if(value) {
85: Pool& pool=received.pool();
86:
87: const void *value_dest_body;
88: size_t value_dest_content_length;
89: UTF8toSource(pool, value, value_size, value_dest_body, value_dest_content_length);
90:
91: putReceived(received, name,
92: new(pool) VString(
93: String::OnPool(pool,(const char *)value_dest_body, value_dest_content_length, true/*tainted*/)));
94: }
95: }
96:
97: static void putReceived(Hash& received, const char *name, time_t value) {
98: Pool& pool=received.pool();
99: if(name)
100: received.put(String::OnPool(pool, name, 0, true/*tainted*/), new(pool) VDate(pool, value));
101: }
102:
103: static void MimeHeaderField2received(const char *name, const char *value, gpointer data) {
104: Hash& received=*static_cast<Hash *>(data);
105:
106: putReceived(received, name, value, 0, true/*nameInUpperCase*/);
107: }
108:
109: static void parse(GMimeStream *stream, Hash& received);
110:
111: #ifndef DOXYGEN
112: struct MimePart2bodyInfo {
113: Hash *body;
114: int partCounts[P_TYPES_COUNT];
115: };
116: #endif
117: static void MimePart2body(GMimePart *part,
118: gpointer data) {
119: MimePart2bodyInfo& i=*static_cast<MimePart2bodyInfo *>(data);
120: Pool& pool=i.body->pool();
121:
122: if(const GMimeContentType *type=g_mime_part_get_content_type(part)) {
123: if(g_mime_content_type_is_type(type, "multipart", "*"))
124: return; // skipping frames
125:
126: PartType partType;
127: if(g_mime_content_type_is_type(type, "text", "plain"))
128: partType=P_TEXT;
129: else if(g_mime_content_type_is_type(type, "text", "html"))
130: partType=P_HTML;
131: else if(g_mime_content_type_is_type(type, "message", "*"))
132: partType=P_MESSAGE;
133: else
134: partType=P_FILE;
135:
136: // partName
137: const char *partName;
138: char partNameBuf[MAX_STRING];
139: const char *partNameStart=part_name_starts[partType];
140: if(int partNo=i.partCounts[partType]++) {
141: snprintf(partNameBuf, MAX_STRING, "%s%d", partNameStart, partNo);
142: partName=partNameBuf;
143: } else
144: partName=partNameStart;
145:
146: // $.partX[
147: VHash& vpartX=*new(pool) VHash(pool); putReceived(*i.body, partName, &vpartX);
148: Hash& partX=vpartX.hash(0);
149: {
150: // $.raw[
151: VHash& vraw=*new(pool) VHash(pool); putReceived(partX, RAW_NAME, &vraw);
152: g_mime_header_foreach(part->headers, MimeHeaderField2received, &vraw.hash(0));
153: }
154: const char *content_filename=0;
155: {
156: // $.content-type[
157: VHash& vcontent_type=*new(pool) VHash(pool); putReceived(partX, "content-type", &vcontent_type);
158: Hash& content_type=vcontent_type.hash(0);
159: {
160: // $.value[text/plain]
161: char value[MAX_STRING];
162: snprintf(value, MAX_STRING, "%s/%s",
163: type->type?type->type:"x-unknown",
164: type->subtype?type->subtype:"x-unknown");
165: putReceived(content_type, VALUE_NAME, value);
166: }
167: GMimeParam *param=type->params;
168: while(param) {
169: // $.charset[windows-1251] && co
170: putReceived(content_type, param->name, param->value, true);
171: if(strcasecmp(param->name, "name")==0)
172: content_filename=param->value;
173: param=param->next;
174: }
175: }
176: // $.description
177: putReceived(partX, "description", part->description);
178: // $.content-id
179: putReceived(partX, "content-id", part->content_id);
180: // $.content-md5
181: putReceived(partX, "content-md5", part->content_md5);
182: // $.content-location
183: putReceived(partX, "content-location", part->content_location);
184:
185: // todo GMimePart:
186: // GMimePartEncodingType encoding;
187: // GMimeDisposition *disposition;
188: if(part->disposition) {
189: GMimeParam *param=part->disposition->params;
190: while(param) {
191: // $.charset[windows-1251] && co
192: if(strcasecmp(param->name, "filename")==0)
193: content_filename=param->value;
194: param=param->next;
195: }
196: }
197:
198: // MESSAGE
199: if(partType==P_MESSAGE) {
200: if(part->content)
201: if(GMimeStream *stream=part->content->stream)
202: parse(stream, partX);
203: } else {
204: // $.value[string|file]
205: size_t buf_len;
206: const void *buf=g_mime_part_get_content(part, &buf_len);
207: if(partType==P_FILE) {
208: VFile& vfile=*new(pool) VFile(pool);
209: vfile.set(true/*tainted*/, buf, buf_len, content_filename);
210: putReceived(partX, VALUE_NAME, &vfile);
211: } else {
212: // P_TEXT, P_HTML
213: putReceived(partX, VALUE_NAME,(const char*)buf, buf_len);
214: }
215: }
216: }
217: }
218:
219: static void parse(GMimeStream *stream, Hash& received) {
220: Pool& pool=received.pool();
221:
222: GMimeMessage *message=g_mime_parser_construct_message(stream);
223: try {
224: const GMimeMessageHeader *messageHeader=message->header;
225: if(!messageHeader)
226: return;
227:
228: // firstly user-defined strings go
229: // user headers
230: {
231: // $.raw[
1.5 paf 232: VHash& vraw=*new(pool) VHash(pool); putReceived(received, RAW_NAME, &vraw);
1.1 paf 233: g_mime_header_foreach(messageHeader->headers, MimeHeaderField2received, &vraw.hash(0));
234: }
235:
236: // maybe-todo-recipients
237: // x(messageHeader->recipients)
238:
239: // secondly standard headers&body go
240: // standard header
241: // .from
242: putReceived(received, "from", messageHeader->from);
243: // .reply-to
244: putReceived(received, "reply-to", messageHeader->reply_to);
245: // .to
246: // todo: messageHeader->recipients
247: // .subject
248: putReceived(received, "subject", messageHeader->subject);
249: // .date(date+gmt_offset)
250: int tt_offset =
251: ((messageHeader->gmt_offset / 100) *(60 * 60))
252: +(messageHeader->gmt_offset % 100) * 60;
253: putReceived(received, "date",
254: messageHeader->date // local sender
255: -tt_offset // move local sender to GMT sender
256: -(timezone+(daylight?60*60*sign(timezone):0)) // move GMT sender to our local time
257: );
258: // .message-id
259: putReceived(received, "message-id", messageHeader->message_id);
260:
261: // .body[part/parts
262: GMimePart *part=message->mime_part;
263: const GMimeContentType *type=g_mime_part_get_content_type(part);
264: MimePart2bodyInfo info={&received};
265: g_mime_part_foreach(part, MimePart2body, &info);
266:
267: // normal unref
268: g_mime_object_unref(GMIME_OBJECT(message));
269: } catch(...) {
270: // abnormal unref
271: g_mime_object_unref(GMIME_OBJECT(message));
272: }
273: }
274: #endif
275:
276:
277:
278: void VMail::fill_received(Request& request) {
279: // store letter to received
1.3 paf 280: #ifdef WITH_MAILRECEIVE
1.1 paf 281: if(request.info.mail_received) {
282: // init
283: g_mime_init(GMIME_INIT_FLAG_UTF8);
284:
285: // create stream with CRLF filter
286: GMimeStream *stream = g_mime_stream_fs_new(fileno(stdin));
287: GMimeStream *istream = g_mime_stream_filter_new_with_stream(stream);
288: GMimeFilter *filter = g_mime_filter_crlf_new(GMIME_FILTER_CRLF_DECODE, GMIME_FILTER_CRLF_MODE_CRLF_ONLY);
289: g_mime_stream_filter_add(GMIME_STREAM_FILTER(istream), filter);
290: g_mime_stream_unref(stream);
291: stream = istream;
292: try {
293: // parse incoming stream
294: parse(stream, vreceived.hash(0));
295: // normal stream free
296: g_mime_stream_unref(stream);
297: } catch(...) {
298: // abnormal stream free
299: g_mime_stream_unref(stream);
300: }
301: }
302: #endif
303: }
304:
305: #ifndef DOXYGEN
306: struct Store_message_element_info {
307: Charset *charset;
308: String *header;
1.10 ! paf 309: const String **from, **to, **errors_to;
1.1 paf 310: Array *parts[P_TYPES_COUNT];
311: int parts_count;
312: bool has_content_type;
313: };
314: #endif
1.9 paf 315: typedef int (*string_contains_char_which_check)(int);
316: static bool string_contains_char_which(const char *string, string_contains_char_which_check check) {
317: while(char c=*string++) {
318: if(check(c))
319: return true;
320: }
321: return false;
322: }
323: const String& extractEmail(const String& string) {
324: Pool& pool=string.pool();
325:
326: char *email=string.cstr();
327: lsplit(email, '>'); lsplit(email, '\x0D');lsplit(email, '\x0A');
328: char *next=rsplit(email, '<');
329: if(next) email=next;
330:
331: String& result=*new(pool) String(pool);
332: result.APPEND_TAINTED(email, 0, string.origin().file, string.origin().line);
333:
334: /*
335: http://www.faqs.org/rfcs/rfc822.html
336:
337: addr-spec = local-part "@" domain ; global address
338:
339: local-part = word *("." word) ; uninterpreted case-preserved
340: word = atom / quoted-string
341:
342: domain = sub-domain *("." sub-domain)
343: sub-domain = domain-ref / domain-literal
344: domain-ref = atom ; symbolic reference
345:
346: domain-literal << ignoring for now
347: quoted-string in word << ignoring for now
348:
349: atom = 1*<any CHAR except specials, SPACE and CTLs> << the ONLY to check
350:
351: specials = "(" / ")" / "<" / ">" / "@" ; Must be in quoted-
352: / "," / ";" / ":" / "\" / <"> ; string, to use
353: / "." / "[" / "]" ; within a word.
354:
355: */
356: if(strpbrk(email, "()<>,;:\\\"[]"/*specials minus @ and . */))
357: throw Exception(0,
358: &result,
359: "email contains characters (specials)");
360: if(string_contains_char_which(email, (string_contains_char_which_check)isspace))
361: throw Exception(0,
362: &result,
363: "email contains characters (whitespace)");
364: if(string_contains_char_which(email, (string_contains_char_which_check)iscntrl))
365: throw Exception(0,
366: &result,
367: "email contains characters (control)");
368:
369: return result;
370: }
1.5 paf 371: static void store_message_element(const Hash::Key& raw_element_name, Hash::Val *aelement_value,
1.1 paf 372: void *info) {
373: Value& element_value=*static_cast<Value *>(aelement_value);
1.5 paf 374: const String& low_element_name=raw_element_name.change_case(raw_element_name.pool(), String::CC_LOWER);
1.1 paf 375: Store_message_element_info& i=*static_cast<Store_message_element_info *>(info);
376:
377: // exclude internals
1.5 paf 378: if(low_element_name==CHARSET_NAME
379: || low_element_name==VALUE_NAME
380: || low_element_name==RAW_NAME
381: || low_element_name=="date")
1.1 paf 382: return;
383:
384: // grep parts
385: for(int pt=0; pt<P_TYPES_COUNT; pt++) {
1.5 paf 386: if(low_element_name.starts_with(part_name_starts[pt])) {
1.1 paf 387: *i.parts[pt]+=&element_value;
388: i.parts_count++;
389: return;
390: }
391: }
392:
1.10 ! paf 393: // fetch some special headers
1.5 paf 394: if(i.from && low_element_name=="from")
1.9 paf 395: *i.from=&extractEmail(element_value.as_string());
1.5 paf 396: if(i.to && low_element_name=="to")
1.9 paf 397: *i.to=&extractEmail(element_value.as_string());
1.10 ! paf 398: if(i.errors_to && low_element_name=="errors-to")
! 399: *i.errors_to=&extractEmail(element_value.as_string());
1.1 paf 400:
401: // append header line
402: *i.header <<
1.5 paf 403: raw_element_name << ":" <<
1.1 paf 404: attributed_meaning_to_string(element_value, String::UL_MAIL_HEADER).
405: cstr(String::UL_UNSPECIFIED, 0, i.charset, i.charset?i.charset->name().cstr():0) <<
406: "\n";
407:
408: // has content type?
1.5 paf 409: if(low_element_name==CONTENT_TYPE_NAME)
1.1 paf 410: i.has_content_type=true;
411: }
412:
413: static const String& file_value_to_string(Request& r, const String *source,
414: Value& send_value) {
415: Pool& pool=r.pool();
416: const VFile *vfile;
417: const String *file_name;
418: Value *vformat;
419: if(Hash *send_hash=send_value.get_hash(source)) { // hash
420: // $.value
421: if(Value *value=static_cast<Value *>(send_hash->get(*value_name)))
422: vfile=value->as_vfile(String::UL_AS_IS);
423: else
424: throw Exception("parser.runtime",
425: source,
426: "file part has no $value");
427:
428: // $.format
429: vformat=static_cast<Value *>(send_hash->get(*new(pool) String(pool, "format")));
430:
1.6 paf 431: // $.name
1.1 paf 432: if(Value *vfile_name=static_cast<Value *>(send_hash->get(
1.6 paf 433: *new(pool) String(pool, "name")))) // specified $name
1.1 paf 434: file_name=&vfile_name->as_string();
435: } else { // must be VFile
436: vfile=send_value.as_vfile(String::UL_AS_IS);
437: file_name=&static_cast<Value *>(vfile->fields().get(*name_name))->as_string();
438: vformat=0;
439: }
440: const char *file_name_cstr=file_name->cstr();
441:
442: String& result=*new(pool) String(pool);
443:
444: // content-type: application/octet-stream
445: result << "content-type: " << r.mime_type_of(file_name_cstr)
446: << "; name=\"" << file_name_cstr << "\"\n";
447: // content-disposition: attachment; filename="user_file_name"
448: result << "content-disposition: attachment; filename=\"" << file_name_cstr << "\"\n";
449:
450: const String *type=vformat?&vformat->as_string():0;
451: if(!type/*default = uue*/ || *type=="uue") {
452: pa_uuencode(result, file_name_cstr, *vfile);
453: } else // for now
454: throw Exception("parser.runtime",
455: type,
456: "unknown attachment encode format");
457:
458: return result;
459: }
460:
461: static const String& text_value_to_string(Request& r, const String *source,
462: PartType pt, Value& send_value,
463: Store_message_element_info& info) {
464: Pool& pool=r.pool();
465: String& result=*new(pool) String(pool);
466:
467: Value *text_value;
468: if(Hash *send_hash=send_value.get_hash(source)) {
469: // $.USER-HEADERS
470: info.has_content_type=false; // reset
471: send_hash->for_each(store_message_element, &info);
472: // $.value
473: text_value=static_cast<Value *>(send_hash->get(*value_name));
474: if(!text_value)
475: throw Exception("parser.runtime",
476: source,
477: "%s part has no $" VALUE_NAME, part_name_starts[pt]);
478: } else
479: text_value=&send_value;
480:
481: if(!info.has_content_type) {
482: result << "content-type: text/" << (pt==P_TEXT?"plain":"html");
483: if(info.charset)
484: result << "; charset=" << info.charset->name();
485: result << "\n";
486: }
487:
488: // header|body separator
489: result << "\n";
490:
491: // body
492: switch(pt) {
493: case P_TEXT:
494: result.append(text_value->as_string(), String::UL_AS_IS, true /* forced */);
495: break;
496: case P_HTML:
497: {
498: Temp_lang temp_lang(r, String::UL_HTML);
499: if(Junction *junction=text_value->get_junction()) {
500: // execution of found $.html{code} must be in context of ^send[...]
501: // setting code context, would execute in ^.send[>>context<<]
502: //junction->change_context(?.get_junction());
503: junction->root=r.root;
504: junction->rcontext=r.rcontext;
505: junction->wcontext=r.wcontext;
506:
507: result << r.process_to_string(*text_value);
508: } else
509: throw Exception("parser.runtime",
510: source,
511: "html part value must be code");
512:
513: break;
514: }
515: }
516:
517: return result;
518: };
519:
520: /// @todo files and messages in order (file, file2, ...)
521: const String& VMail::message_hash_to_string(Request& r, const String *source,
522: Hash *message_hash, int level,
523: const String **from, const String **to) {
524: if(!message_hash)
525: throw Exception("parser.runtime",
526: source,
527: "message must be hash");
528:
529: String& result=*NEW String(pool());
530:
531: Charset *charset;
532: if(Value *vrecodecharset_name=static_cast<Value *>(message_hash->get(*charset_name)))
533: charset=&charsets->get_charset(vrecodecharset_name->as_string());
534: else
535: charset=&pool().get_source_charset();
536:
537: Store_message_element_info info={
538: charset,
539: &result,
540: from, to
541: };
542: {
543: if(from)
544: *from=0;
545: if(to)
546: *to=0;
547: for(int pt=0; pt<P_TYPES_COUNT; pt++)
548: info.parts[pt]=NEW Array(pool());
549: message_hash->for_each(store_message_element, &info);
1.10 ! paf 550: if(!info.errors_to)
! 551: result << "errors-to: postmaster\n"; // errors-to: default
1.1 paf 552: }
553:
554: int textCount=info.parts[P_TEXT]->size();
555: if(textCount>1)
556: throw Exception("parser.runtime",
557: source,
558: "multiple text parts not supported, use file part");
559: int htmlCount=info.parts[P_HTML]->size();
560: if(htmlCount>1)
561: throw Exception("parser.runtime",
562: source,
563: "multiple html parts not supported, use file part");
564:
565:
566: bool multipart=info.parts_count>1;
567: bool alternative=textCount && htmlCount;
568: // header
569: char *boundary=0;
570: if(multipart) {
571: boundary=(char *)malloc(MAX_NUMBER);
572: snprintf(boundary, MAX_NUMBER-5/*lEvEl*/, "lEvEl%d", level);
573: // multi-part
574: result << "content-type: multipart/mixed; boundary=\"" << boundary << "\"\n";
575: result << "\n"
576: "This is a multi-part message in MIME format.";
577: }
578:
579: // alternative or not
580: {
581: if(alternative) {
582: result << "\n\n--" << boundary << "\n"; // intermediate boundary
583: result << "content-type: multipart/alternative; boundary=\"ALT" << boundary << "\"\n";
584: }
585: for(int i=0; i<2; i++) {
586: PartType pt=i==0?P_TEXT:P_HTML;
587: if(info.parts[pt]->size()) {
588: if(alternative)
589: result << "\n\n--ALT" << boundary << "\n"; // intermediate boundary
590: else if(boundary)
591: result << "\n\n--" << boundary << "\n"; // intermediate boundary
592: result << text_value_to_string(r, source, pt,
593: *static_cast<Value *>(info.parts[pt]->get(0)), info);
594: }
595: }
596: if(alternative)
597: result << "\n\n--ALT" << boundary << "--\n";
598: }
599:
600: // files
601: {
602: Array& files=*info.parts[P_FILE];
603: for(int i=0; i<files.size(); i++) {
604: if(boundary)
605: result << "\n\n--" << boundary << "\n"; // intermediate boundary
606: result << file_value_to_string(r, source, *static_cast<Value *>(files.get(i)));
607: }
608: }
609:
610: // messages
611: {
612: Array& messages=*info.parts[P_MESSAGE];
613: for(int i=0; i<messages.size(); i++) {
614: if(boundary)
615: result << "\n\n--" << boundary << "\n"; // intermediate boundary
616:
617: result << message_hash_to_string(r, source,
618: static_cast<Value *>(messages.get(i))->get_hash(source),
619: level+1);
620: }
621: }
622:
623: // tailer
624: if(boundary)
625: result << "\n\n--" << boundary << "--\n"; // finish boundary
626:
627: // return
628: return result;
629: }
630:
631:
632: Value *VMail::get_element(const String& aname) {
633: // $fields
1.3 paf 634: #ifdef WITH_MAILRECEIVE
1.1 paf 635: if(aname==MAIL_RECEIVED_ELEMENT_NAME)
636: return &vreceived;
637: #endif
638:
639: // $CLASS,$method
640: if(Value *result=VStateless_class::get_element(aname))
641: return result;
642:
643: return 0;
644: }
645:
1.3 paf 646: #if defined(WITH_MAILRECEIVE) && defined(_MSC_VER)
1.1 paf 647: # define GNOME_LIBS "/parser3project/win32mailreceive/win32/gnome"
648: # pragma comment(lib, GNOME_LIBS "/glib/lib/libglib-1.3-11.lib")
649: # ifdef _DEBUG
650: # pragma comment(lib, GNOME_LIBS "/gmime-x.x.x/Debug/libgmime.lib")
651: # else
652: # pragma comment(lib, GNOME_LIBS "/gmime-x.x.x/Release/libgmime.lib")
653: # endif
654: #endif