Annotation of parser3/src/targets/apache/mod_parser3_core.C, revision 1.7
1.1 moko 1: /** @file
2: Parser: apache 1.3 module, part, compiled by parser3project.
3:
1.6 moko 4: Copyright (c) 2001-2012 Art. Lebedev Studio (http://www.artlebedev.com)
1.1 moko 5: Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
6: */
7:
1.7 ! moko 8: volatile const char * IDENT_MOD_PARSER3_CORE_C="$Id: mod_parser3_core.C,v 1.6 2012-03-16 09:24:15 moko Exp $";
1.1 moko 9:
10: #include "pa_config_includes.h"
11:
12: #include "pa_globals.h"
13:
14: #include "pa_httpd.h"
15:
16: #include "pa_common.h"
17: #include "pa_sapi.h"
18: #include "classes.h"
19: #include "pa_request.h"
20: #include "pa_socks.h"
21:
22: #if _MSC_VER && !defined(_DEBUG)
23: # include <windows.h>
24: # define PA_SUPPRESS_SYSTEM_EXCEPTION
25: #endif
26:
27: // generals
28:
1.7 ! moko 29: static bool globals_inited=false;
! 30:
1.1 moko 31: void pa_setup_module_cells() {
32: if(globals_inited)
33: return;
34: globals_inited=true;
35:
36: /// no trying to __try here [yet]
37: try {
38: // init socks
39: pa_socks_init();
40:
41: // init global variables
42: pa_globals_init();
43: } catch(const Exception& e) { // global problem
44: SAPI::abort("setup_module_cells failed: %s", e.comment());
45: }
46: }
47:
48: void pa_destroy_module_cells() {
1.7 ! moko 49: if(!globals_inited)
! 50: return;
! 51:
1.1 moko 52: pa_globals_done();
53:
54: pa_socks_done();
55: }
56:
57:
58: //@{
59: /// SAPI func decl
60:
61: class SAPI_Info {
62: public:
63: pa_request_rec* r;
64: };
65:
66: void SAPI::log(SAPI_Info& SAPI_info, const char* fmt, ...) {
67: va_list args;
68: va_start(args,fmt);
69: char buf[MAX_LOG_STRING];
70: size_t size=vsnprintf(buf, MAX_LOG_STRING, fmt, args);
71: size=remove_crlf(buf, buf+size);
72: pa_ap_log_rerror(0, 0, PA_APLOG_ERR | PA_APLOG_NOERRNO, SAPI_info.r, "%s", buf);
73: va_end(args);
74: }
75:
76: static void die_or_abort(const char* fmt, va_list args, bool write_core) {
77: char buf[MAX_LOG_STRING];
78: size_t size=vsnprintf(buf, MAX_LOG_STRING, fmt, args);
79: size=remove_crlf(buf, buf+size);
80: pa_ap_log_error(PA_APLOG_MARK, PA_APLOG_EMERG, 0, "%s", buf);
81:
82: // exit & try to produce core dump
83: if(write_core)
84: abort();
85: else
86: exit(1);
87: }
88:
89: void SAPI::die(const char* fmt, ...) {
90: va_list args;
91: va_start(args, fmt);
92: die_or_abort(fmt, args, false/*write core?*/);
93: va_end(args);
94: }
95:
96: void SAPI::abort(const char* fmt, ...) {
97: va_list args;
98: va_start(args, fmt);
99: die_or_abort(fmt, args, true/*write core?*/);
100: va_end(args);
101: }
102:
103: char* SAPI::get_env(SAPI_Info& SAPI_info, const char* name) {
104: const char* dont_return_me=pa_ap_table_get(SAPI_info.r->subprocess_env, name);
105: return dont_return_me?pa_strdup(dont_return_me):0;
106: }
107:
108: #ifndef DOXYGEN
109: struct SAPI_environment_append_info {
110: const char** cur;
111: };
112: #endif
113: static const char* mk_env_pair(const char* key, const char* value) {
114: char *result=new(PointerFreeGC) char[strlen(key)+1/*=*/+strlen(value)+1/*0*/];
115: strcpy(result, key); strcat(result, "="); strcat(result, value);
116: return result;
117: }
118: static int SAPI_environment_append(void *d, const char* k, const char* val) {
119: if( k && val ) {
120: SAPI_environment_append_info& info=
121: *static_cast<SAPI_environment_append_info *>(d);
122: *info.cur++=mk_env_pair(k, val);
123: }
124: return 1/*true*/;
125: }
126: const char* const* SAPI::environment(SAPI_Info& SAPI_info) {
127: const pa_table *t=SAPI_info.r->subprocess_env;
128: const char** result=new(UseGC) const char*[pa_ap_table_size(t)+1/*0*/];
129: SAPI_environment_append_info info={result};
130: pa_ap_table_do(SAPI_environment_append, &info, t, 0); *info.cur=0; // mark EOE
131: return result;
132: }
133:
134: size_t SAPI::read_post(SAPI_Info& SAPI_info, char *buf, size_t max_bytes) {
135: /* pa_ap_log_error(PA_APLOG_MARK, PA_APLOG_DEBUG, SAPI_info.r->server,
136: "mod_parser3: SAPI::read_post(max=%u)", max_bytes);
137: */
138: int retval;
139: if((retval = pa_ap_setup_client_block(SAPI_info.r, PA_REQUEST_CHUNKED_ERROR)))
140: return 0;
141: if(!pa_ap_should_client_block(SAPI_info.r))
142: return 0;
143:
144: uint total_read_bytes=0;
145: void (*handler)(int)=pa_signal(PA_SIGPIPE, PA_SIG_IGN);
146: while (total_read_bytes<max_bytes) {
147: pa_ap_hard_timeout("Read POST information", SAPI_info.r); /* start timeout timer */
148: uint read_bytes=
149: pa_ap_get_client_block(SAPI_info.r, buf+total_read_bytes, max_bytes-total_read_bytes);
150: pa_ap_reset_timeout(SAPI_info.r);
151: if (read_bytes<=0)
152: break;
153: total_read_bytes+=read_bytes;
154: }
155: pa_signal(PA_SIGPIPE, handler);
156: return total_read_bytes;
157: }
158:
159: /// @test location provide with protocol. think about internal redirects
160: void SAPI::add_header_attribute(SAPI_Info& SAPI_info,
161: const char* dont_store_key, const char* dont_store_value) {
162: if(strcasecmp(dont_store_key, "location")==0)
163: *SAPI_info.r->status=302;
164:
165: if(strcasecmp(dont_store_key, HTTP_CONTENT_TYPE)==0) {
166: /* r->content_type, *not* r->headers_out("Content-type"). If you don't
167: * set it, it will be filled in with the server's default type (typically
168: * "text/plain"). You *must* also ensure that r->content_type is lower
169: * case.
170: */
171: *SAPI_info.r->content_type = pa_ap_pstrdup(SAPI_info.r->pool, dont_store_value);
172: } else if(strcasecmp(dont_store_key, HTTP_STATUS)==0)
173: *SAPI_info.r->status=atoi(dont_store_value);
174: else
175: pa_ap_table_addn(SAPI_info.r->headers_out,
176: pa_ap_pstrdup(SAPI_info.r->pool, capitalize(dont_store_key)),
177: pa_ap_pstrdup(SAPI_info.r->pool, dont_store_value));
178: }
179:
180: void SAPI::send_header(SAPI_Info& SAPI_info) {
181: pa_ap_hard_timeout("Send header", SAPI_info.r);
182: pa_ap_send_http_header(SAPI_info.r);
183: pa_ap_kill_timeout(SAPI_info.r);
184: }
185:
186: size_t SAPI::send_body(SAPI_Info& SAPI_info, const void *buf, size_t size) {
187: pa_ap_hard_timeout("Send body", SAPI_info.r);
188: size = (size_t)pa_ap_rwrite(buf, size, SAPI_info.r);
189: pa_ap_kill_timeout(SAPI_info.r);
190: return size;
191: }
192:
193: //@}
194:
195: #if !defined(PA_DEBUG_DISABLE_GC) && !defined(WIN32)
196: extern long GC_large_alloc_warn_suppressed;
197: #endif
198:
199: /**
200: main workhorse
201:
202: @todo intelligent cache-control
203: */
204: static void real_parser_handler(SAPI_Info& SAPI_info, Parser_module_config *dcfg) {
205: // collect garbage from prev request
206: #if !defined(PA_DEBUG_DISABLE_GC) && !defined(WIN32)
207: {
208: GC_dont_gc=0;
209: GC_gcollect();
1.5 moko 210: GC_dont_gc=1;
1.1 moko 211: GC_large_alloc_warn_suppressed=0;
212: }
213: #endif
214:
215: // populate env
216: pa_ap_add_common_vars(SAPI_info.r);
217: pa_ap_add_cgi_vars(SAPI_info.r);
218:
219: // Request info
220: Request_info request_info; memset(&request_info, 0, sizeof(request_info));
221:
222: request_info.document_root=SAPI::get_env(SAPI_info, "DOCUMENT_ROOT");
223: request_info.path_translated=SAPI_info.r->filename;
224: request_info.method=SAPI_info.r->method;
225: request_info.query_string=SAPI_info.r->args;
226: request_info.uri=SAPI::get_env(SAPI_info, "REQUEST_URI");
227: request_info.content_type=SAPI::get_env(SAPI_info, "CONTENT_TYPE");
228: const char* content_length=SAPI::get_env(SAPI_info, "CONTENT_LENGTH");
229: request_info.content_length=content_length?atoi(content_length):0;
230: request_info.cookie=SAPI::get_env(SAPI_info, "HTTP_COOKIE");
231: request_info.mail_received=false;
232:
233: // prepare to process request
234: Request request(
235: SAPI_info,
236: request_info,
1.3 moko 237: String::Language(String::L_HTML|String::L_OPTIMIZE_BIT)
1.1 moko 238: );
239:
240: // process the request
241: request.core(
242: dcfg->parser_config_filespec, true, // /path/to/config
243: SAPI_info.r->header_only!=0);
244: }
245:
246: #ifdef PA_SUPPRESS_SYSTEM_EXCEPTION
247: static const Exception
248: call_real_parser_handler__do_PEH_return_it(
249: SAPI_Info& SAPI_info, Parser_module_config *dcfg)
250: {
251: try {
252: real_parser_handler(SAPI_info, dcfg);
253: } catch(const Exception& e) {
254: return e;
255: }
256:
257: return Exception();
258: }
259: static void call_real_parser_handler__supress_system_exception(
260: SAPI_Info& SAPI_info, Parser_module_config *dcfg)
261: {
262: Exception parser_exception;
263: LPEXCEPTION_POINTERS system_exception=0;
264:
265: __try {
266: parser_exception=call_real_parser_handler__do_PEH_return_it(
267: SAPI_info, dcfg);
268: } __except (
269: (system_exception=GetExceptionInformation()),
270: EXCEPTION_EXECUTE_HANDLER)
271: {
272:
273: if(system_exception)
274: if(_EXCEPTION_RECORD *er=system_exception->ExceptionRecord)
275: throw Exception("system",
276: 0,
277: "0x%08X at 0x%08X", er->ExceptionCode, er->ExceptionAddress);
278: else
279: throw Exception("system",
280: 0,
281: "<no exception record>");
282: else
283: throw Exception("system",
284: 0,
285: "<no exception information>");
286: }
287:
288: if(parser_exception)
289: throw Exception(parser_exception);
290: }
291: #endif
292:
293: /// @test r->finfo.st_mode check seems to work only on win32
294: int pa_parser_handler(pa_request_rec *r, Parser_module_config *dcfg) {
295: // SAPI info
296: SAPI_Info SAPI_info; SAPI_info.r=r;
297:
1.2 moko 298: if(r->file_not_found )
1.1 moko 299: return PA_HTTP_NOT_FOUND;
300:
301: try { // global try
302: #ifdef PA_SUPPRESS_SYSTEM_EXCEPTION
303: call_real_parser_handler__supress_system_exception(
304: #else
305: real_parser_handler(
306: #endif
307: SAPI_info, dcfg);
308:
309: // successful finish
310: } catch(const Exception& e) { // global problem
311: // don't allocate anything on pool here:
312: // possible pool' exception not catch-ed now
313: // and there could be out-of-memory exception
314: char buf[MAX_STRING];
315: snprintf(buf, MAX_STRING, "Unhandled exception %s",
316: e.comment());
317: // log it
318: SAPI::log(SAPI_info, "%s", buf);
319:
320: //
321: int content_length=strlen(buf);
322:
323: // prepare header
324: // capitalized headers are used for preventing malloc during capitalization
325: SAPI::add_header_attribute(SAPI_info, HTTP_CONTENT_TYPE_CAPITALIZED, "text/plain");
326: // don't use 'format' function because it calls malloc
327: char content_length_cstr[MAX_NUMBER];
328: snprintf(content_length_cstr, MAX_NUMBER, "%u", content_length);
329: SAPI::add_header_attribute(SAPI_info, HTTP_CONTENT_LENGTH_CAPITALIZED, content_length_cstr);
330:
331: // send header
332: SAPI::send_header(SAPI_info);
333:
334: // send body
335: if(!r->header_only)
336: SAPI::send_body(SAPI_info, buf, content_length);
337:
338: // unsuccessful finish
339: }
340:
341: /*
342: * We did what we wanted to do, so tell the rest of the server we
343: * succeeded.
344: */
345: return PA_OK;
346: }
E-mail:
![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to mod_parser3_core.C CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [parser3project] / parser3 / src / targets / apache