Annotation of parser3/src/targets/apache/mod_parser3_core.C, revision 1.17
1.1 moko 1: /** @file
1.8 moko 2: Parser: apache 1.3/2.X module, part, compiled by parser3project.
1.1 moko 3:
1.16 moko 4: Copyright (c) 2001-2017 Art. Lebedev Studio (http://www.artlebedev.com)
1.1 moko 5: Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
6: */
7:
1.17 ! moko 8: volatile const char * IDENT_MOD_PARSER3_CORE_C="$Id: mod_parser3_core.C,v 1.16 2017/02/07 22:00:45 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:
1.17 ! moko 22: #if defined(_MSC_VER) && !defined(_DEBUG)
1.9 moko 23: # include <windows.h>
1.1 moko 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:
1.11 moko 103: char* SAPI::Env::get(SAPI_Info& SAPI_info, const char* name) {
1.1 moko 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: }
1.11 moko 126: const char* const* SAPI::Env::get(SAPI_Info& SAPI_info) {
1.1 moko 127: const pa_table *t=SAPI_info.r->subprocess_env;
1.12 moko 128: const char** result=new const char*[pa_ap_table_size(t)+1/*0*/];
1.1 moko 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:
1.8 moko 195: #ifndef PA_DEBUG_DISABLE_GC
1.10 moko 196: #ifndef _MSC_VER
1.8 moko 197: extern long GC_large_alloc_warn_suppressed;
1.1 moko 198: #endif
1.10 moko 199: #endif
1.1 moko 200:
201: /**
202: main workhorse
203:
204: @todo intelligent cache-control
205: */
206: static void real_parser_handler(SAPI_Info& SAPI_info, Parser_module_config *dcfg) {
207: // collect garbage from prev request
1.8 moko 208: #ifndef PA_DEBUG_DISABLE_GC
209: GC_dont_gc=0;
210: GC_gcollect();
211: GC_dont_gc=1;
1.10 moko 212: #ifndef _MSC_VER
1.8 moko 213: GC_large_alloc_warn_suppressed=0;
1.1 moko 214: #endif
1.10 moko 215: #endif
1.1 moko 216:
217: // populate env
218: pa_ap_add_common_vars(SAPI_info.r);
219: pa_ap_add_cgi_vars(SAPI_info.r);
220:
221: // Request info
222: Request_info request_info; memset(&request_info, 0, sizeof(request_info));
223:
1.11 moko 224: request_info.document_root=SAPI::Env::get(SAPI_info, "DOCUMENT_ROOT");
1.1 moko 225: request_info.path_translated=SAPI_info.r->filename;
226: request_info.method=SAPI_info.r->method;
227: request_info.query_string=SAPI_info.r->args;
1.15 moko 228: request_info.uri=request_info.strip_absolute_uri(SAPI::Env::get(SAPI_info, "REQUEST_URI"));
1.11 moko 229: request_info.content_type=SAPI::Env::get(SAPI_info, "CONTENT_TYPE");
230: const char* content_length=SAPI::Env::get(SAPI_info, "CONTENT_LENGTH");
1.1 moko 231: request_info.content_length=content_length?atoi(content_length):0;
1.11 moko 232: request_info.cookie=SAPI::Env::get(SAPI_info, "HTTP_COOKIE");
1.1 moko 233: request_info.mail_received=false;
234:
235: // prepare to process request
236: Request request(
237: SAPI_info,
238: request_info,
1.3 moko 239: String::Language(String::L_HTML|String::L_OPTIMIZE_BIT)
1.1 moko 240: );
241:
242: // process the request
243: request.core(
244: dcfg->parser_config_filespec, true, // /path/to/config
245: SAPI_info.r->header_only!=0);
246: }
247:
248: #ifdef PA_SUPPRESS_SYSTEM_EXCEPTION
249: static const Exception
250: call_real_parser_handler__do_PEH_return_it(
251: SAPI_Info& SAPI_info, Parser_module_config *dcfg)
252: {
253: try {
254: real_parser_handler(SAPI_info, dcfg);
255: } catch(const Exception& e) {
256: return e;
257: }
258:
259: return Exception();
260: }
261: static void call_real_parser_handler__supress_system_exception(
262: SAPI_Info& SAPI_info, Parser_module_config *dcfg)
263: {
264: Exception parser_exception;
265: LPEXCEPTION_POINTERS system_exception=0;
266:
267: __try {
268: parser_exception=call_real_parser_handler__do_PEH_return_it(
269: SAPI_info, dcfg);
270: } __except (
271: (system_exception=GetExceptionInformation()),
272: EXCEPTION_EXECUTE_HANDLER)
273: {
274:
275: if(system_exception)
276: if(_EXCEPTION_RECORD *er=system_exception->ExceptionRecord)
277: throw Exception("system",
278: 0,
279: "0x%08X at 0x%08X", er->ExceptionCode, er->ExceptionAddress);
280: else
281: throw Exception("system",
282: 0,
283: "<no exception record>");
284: else
285: throw Exception("system",
286: 0,
287: "<no exception information>");
288: }
289:
290: if(parser_exception)
291: throw Exception(parser_exception);
292: }
293: #endif
294:
295: /// @test r->finfo.st_mode check seems to work only on win32
296: int pa_parser_handler(pa_request_rec *r, Parser_module_config *dcfg) {
297: // SAPI info
298: SAPI_Info SAPI_info; SAPI_info.r=r;
299:
1.2 moko 300: if(r->file_not_found )
1.1 moko 301: return PA_HTTP_NOT_FOUND;
302:
303: try { // global try
304: #ifdef PA_SUPPRESS_SYSTEM_EXCEPTION
305: call_real_parser_handler__supress_system_exception(
306: #else
307: real_parser_handler(
308: #endif
309: SAPI_info, dcfg);
310:
311: // successful finish
312: } catch(const Exception& e) { // global problem
313: // don't allocate anything on pool here:
314: // possible pool' exception not catch-ed now
315: // and there could be out-of-memory exception
316: char buf[MAX_STRING];
317: snprintf(buf, MAX_STRING, "Unhandled exception %s",
318: e.comment());
319: // log it
320: SAPI::log(SAPI_info, "%s", buf);
321:
322: //
323: int content_length=strlen(buf);
324:
325: // prepare header
326: // capitalized headers are used for preventing malloc during capitalization
327: SAPI::add_header_attribute(SAPI_info, HTTP_CONTENT_TYPE_CAPITALIZED, "text/plain");
328: // don't use 'format' function because it calls malloc
329: char content_length_cstr[MAX_NUMBER];
330: snprintf(content_length_cstr, MAX_NUMBER, "%u", content_length);
331: SAPI::add_header_attribute(SAPI_info, HTTP_CONTENT_LENGTH_CAPITALIZED, content_length_cstr);
332:
333: // send header
334: SAPI::send_header(SAPI_info);
335:
336: // send body
337: if(!r->header_only)
338: SAPI::send_body(SAPI_info, buf, content_length);
339:
340: // unsuccessful finish
341: }
342:
343: /*
344: * We did what we wanted to do, so tell the rest of the server we
345: * succeeded.
346: */
347: return PA_OK;
348: }
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