Annotation of parser3/src/targets/apache13core/mod_parser3_core.C, revision 1.7
1.1 paf 1: /** @file
2: Parser: apache 1.3 module, part, compiled by parser3project.
3:
1.3 paf 4: Copyright (c) 2001-2004 ArtLebedev Group (http://www.artlebedev.com)
1.1 paf 5: Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
6: */
7:
1.7 ! paf 8: static const char * const IDENT_MOD_PARSER3_MAIN_C="$Date: 2004/07/26 10:44:21 $";
! 9:
! 10: #include "pa_config_includes.h"
1.1 paf 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_version.h"
21: #include "pa_socks.h"
22:
1.7 ! paf 23: #if _MSC_VER && !defined(_DEBUG)
! 24: # include <windows.h>
! 25: # define PA_SUPPRESS_SYSTEM_EXCEPTION
! 26: #endif
1.1 paf 27:
28: // generals
29:
30: const char* pa_version() {
31: return "Parser/"PARSER_VERSION;
32: }
33:
34: void pa_setup_module_cells() {
35: static bool globals_inited=false;
36: if(globals_inited)
37: return;
38: globals_inited=true;
39:
40: /// no trying to __try here [yet]
41: try {
42: // init socks
1.5 paf 43: pa_socks_init();
1.1 paf 44:
45: // init global variables
46: pa_globals_init();
47: } catch(const Exception& e) { // global problem
48: SAPI::abort("setup_module_cells failed: %s", e.comment());
49: }
50: }
1.5 paf 51:
52: void pa_destroy_module_cells() {
53: pa_globals_done();
54:
55: pa_socks_done();
56: }
57:
1.1 paf 58:
59: //@{
60: /// SAPI func decl
61:
62: class SAPI_Info {
63: public:
64: pa_request_rec* r;
65: };
66:
67: void SAPI::log(SAPI_Info& SAPI_info, const char* fmt, ...) {
68: va_list args;
69: va_start(args,fmt);
70: char buf[MAX_STRING];
71: size_t size=vsnprintf(buf, MAX_STRING, fmt, args);
72: remove_crlf(buf, buf+size);
73: pa_ap_log_rerror(0, 0, PA_APLOG_ERR | PA_APLOG_NOERRNO, SAPI_info.r, "%s", buf);
74: va_end(args);
75: }
76:
77: static void die_or_abort(const char* fmt, va_list args, bool write_core) {
78: char buf[MAX_STRING];
79: size_t size=vsnprintf(buf, MAX_STRING, fmt, args);
80: remove_crlf(buf, buf+size);
81: pa_ap_log_error(PA_APLOG_MARK, PA_APLOG_EMERG, 0, "%s", buf);
82:
83: // exit & try to produce core dump
84: if(write_core)
85: abort();
86: else
87: exit(1);
88: }
89:
90: void SAPI::die(const char* fmt, ...) {
91: va_list args;
92: va_start(args, fmt);
93: die_or_abort(fmt, args, false/*write core?*/);
94: va_end(args);
95: }
96:
97: void SAPI::abort(const char* fmt, ...) {
98: va_list args;
99: va_start(args, fmt);
100: die_or_abort(fmt, args, true/*write core?*/);
101: va_end(args);
102: }
103:
104: char* SAPI::get_env(SAPI_Info& SAPI_info, const char* name) {
105: const char* dont_return_me=pa_ap_table_get(SAPI_info.r->subprocess_env, name);
106: return dont_return_me?pa_strdup(dont_return_me):0;
107: }
108:
109: #ifndef DOXYGEN
110: struct SAPI_environment_append_info {
111: const char** cur;
112: };
113: #endif
114: static const char* mk_env_pair(const char* key, const char* value) {
115: char *result=new(PointerFreeGC) char[strlen(key)+1/*=*/+strlen(value)+1/*0*/];
116: strcpy(result, key); strcat(result, "="); strcat(result, value);
117: return result;
118: }
119: static int SAPI_environment_append(void *d, const char* k, const char* val) {
120: if( k && val ) {
121: SAPI_environment_append_info& info=
122: *static_cast<SAPI_environment_append_info *>(d);
123: *info.cur++=mk_env_pair(k, val);
124: }
125: return 1/*true*/;
126: }
127: const char* const* SAPI::environment(SAPI_Info& SAPI_info) {
128: const pa_table *t=SAPI_info.r->subprocess_env;
1.2 paf 129: const char** result=new(UseGC) const char*[pa_ap_table_size(t)+1/*0*/];
1.1 paf 130: SAPI_environment_append_info info={result};
131: pa_ap_table_do(SAPI_environment_append, &info, t, 0); *info.cur=0; // mark EOE
132: return result;
133: }
134:
135: size_t SAPI::read_post(SAPI_Info& SAPI_info, char *buf, size_t max_bytes) {
136: /* pa_ap_log_error(PA_APLOG_MARK, PA_APLOG_DEBUG, SAPI_info.r->server,
137: "mod_parser3: SAPI::read_post(max=%u)", max_bytes);
138: */
139: int retval;
140: if((retval = pa_ap_setup_client_block(SAPI_info.r, PA_REQUEST_CHUNKED_ERROR)))
141: return 0;
142: if(!pa_ap_should_client_block(SAPI_info.r))
143: return 0;
144:
145: uint total_read_bytes=0;
146: void (*handler)(int)=pa_signal(PA_SIGPIPE, PA_SIG_IGN);
147: while (total_read_bytes<max_bytes) {
148: pa_ap_hard_timeout("Read POST information", SAPI_info.r); /* start timeout timer */
149: uint read_bytes=
150: pa_ap_get_client_block(SAPI_info.r, buf+total_read_bytes, max_bytes-total_read_bytes);
151: pa_ap_reset_timeout(SAPI_info.r);
152: if (read_bytes<=0)
153: break;
154: total_read_bytes+=read_bytes;
155: }
156: pa_signal(PA_SIGPIPE, handler);
157: return total_read_bytes;
158: }
159:
160: /// @test location provide with protocol. think about internal redirects
161: void SAPI::add_header_attribute(SAPI_Info& SAPI_info,
162: const char* dont_store_key, const char* dont_store_value) {
163: if(strcasecmp(dont_store_key, "location")==0)
164: *SAPI_info.r->status=302;
165:
166: if(strcasecmp(dont_store_key, "content-type")==0) {
167: /* r->content_type, *not* r->headers_out("Content-type"). If you don't
168: * set it, it will be filled in with the server's default type (typically
169: * "text/plain"). You *must* also ensure that r->content_type is lower
170: * case.
171: */
172: *SAPI_info.r->content_type = pa_ap_pstrdup(SAPI_info.r->pool, dont_store_value);
173: } else if(strcasecmp(dont_store_key, "status")==0)
174: *SAPI_info.r->status=atoi(dont_store_value);
175: else
176: pa_ap_table_addn(SAPI_info.r->headers_out,
177: pa_ap_pstrdup(SAPI_info.r->pool, dont_store_key),
178: pa_ap_pstrdup(SAPI_info.r->pool, dont_store_value));
179: }
180:
181: void SAPI::send_header(SAPI_Info& SAPI_info) {
182: pa_ap_hard_timeout("Send header", SAPI_info.r);
183: pa_ap_send_http_header(SAPI_info.r);
184: pa_ap_kill_timeout(SAPI_info.r);
185: }
186:
1.6 paf 187: size_t SAPI::send_body(SAPI_Info& SAPI_info, const void *buf, size_t size) {
1.1 paf 188: pa_ap_hard_timeout("Send body", SAPI_info.r);
1.6 paf 189: size = (size_t)pa_ap_rwrite(buf, size, SAPI_info.r);
1.1 paf 190: pa_ap_kill_timeout(SAPI_info.r);
1.6 paf 191: return size;
1.1 paf 192: }
193:
194: //@}
195:
196: /**
197: main workhorse
198:
199: @todo intelligent cache-control
200: */
201: static void real_parser_handler(SAPI_Info& SAPI_info, Parser_module_config *dcfg) {
1.4 paf 202: // collect garbage from prev request
203: #ifndef PA_DEBUG_DISABLE_GC
204: {
205: int saved=GC_dont_gc;
206: GC_dont_gc=0;
207: GC_gcollect();
208: GC_dont_gc=saved;
209: }
210: #endif
211:
212: // populate env
1.1 paf 213: pa_ap_add_common_vars(SAPI_info.r);
214: pa_ap_add_cgi_vars(SAPI_info.r);
215:
216: // Request info
217: Request_info request_info; memset(&request_info, 0, sizeof(request_info));
218:
219: request_info.document_root=SAPI::get_env(SAPI_info, "DOCUMENT_ROOT");
220: request_info.path_translated=SAPI_info.r->filename;
221: request_info.method=SAPI_info.r->method;
222: request_info.query_string=SAPI_info.r->args;
223: request_info.uri=SAPI::get_env(SAPI_info, "REQUEST_URI");
224: request_info.content_type=SAPI::get_env(SAPI_info, "CONTENT_TYPE");
225: const char* content_length=SAPI::get_env(SAPI_info, "CONTENT_LENGTH");
226: request_info.content_length=content_length?atoi(content_length):0;
227: request_info.cookie=SAPI::get_env(SAPI_info, "HTTP_COOKIE");
228: request_info.mail_received=false;
229:
230: //_asm int 3;
231: // prepare to process request
232: Request request(
233: SAPI_info,
234: request_info,
235: String::Language(String::L_HTML|String::L_OPTIMIZE_BIT),
236: dcfg->parser_status_allowed?true:false
237: );
238:
239: // process the request
240: request.core(
241: dcfg->parser_config_filespec, true, // /path/to/config
242: SAPI_info.r->header_only!=0);
243: }
244:
1.7 ! paf 245: #ifdef PA_SUPPRESS_SYSTEM_EXCEPTION
! 246: static const Exception
! 247: call_real_parser_handler__do_PEH_return_it(
! 248: SAPI_Info& SAPI_info, Parser_module_config *dcfg)
! 249: {
! 250: try {
! 251: real_parser_handler(SAPI_info, dcfg);
! 252: } catch(const Exception& e) {
! 253: return e;
! 254: }
! 255:
! 256: return Exception();
! 257: }
! 258: static void call_real_parser_handler__supress_system_exception(
! 259: SAPI_Info& SAPI_info, Parser_module_config *dcfg)
! 260: {
! 261: Exception parser_exception;
1.1 paf 262: LPEXCEPTION_POINTERS system_exception=0;
1.7 ! paf 263:
1.1 paf 264: __try {
1.7 ! paf 265: parser_exception=call_real_parser_handler__do_PEH_return_it(
! 266: SAPI_info, dcfg);
1.1 paf 267: } __except (
268: (system_exception=GetExceptionInformation()),
1.7 ! paf 269: EXCEPTION_EXECUTE_HANDLER)
! 270: {
! 271:
1.1 paf 272: if(system_exception)
273: if(_EXCEPTION_RECORD *er=system_exception->ExceptionRecord)
1.7 ! paf 274: throw Exception("system",
! 275: 0,
! 276: "0x%08X at 0x%08X", er->ExceptionCode, er->ExceptionAddress);
1.1 paf 277: else
1.7 ! paf 278: throw Exception("system",
! 279: 0,
! 280: "<no exception record>");
! 281: else
! 282: throw Exception("system",
! 283: 0,
! 284: "<no exception information>");
1.1 paf 285: }
1.7 ! paf 286:
! 287: if(parser_exception)
! 288: throw Exception(parser_exception);
! 289: }
1.1 paf 290: #endif
291:
292: /// @test r->finfo.st_mode check seems to work only on win32
293: int pa_parser_handler(pa_request_rec *r, Parser_module_config *dcfg) {
294: //_asm int 3;
295:
296: // SAPI info
297: SAPI_Info SAPI_info; SAPI_info.r=r;
298:
299: //_asm int 3;
300: if(r->finfo->st_mode == 0)
301: return PA_HTTP_NOT_FOUND;
302:
303: /* A flag which modules can set, to indicate that the data being
304: * returned is volatile, and clients should be told not to cache it.
305: */
306: // r->no_cache=1;
307:
308: try { // global try
1.7 ! paf 309: #ifdef PA_SUPPRESS_SYSTEM_EXCEPTION
! 310: call_real_parser_handler__supress_system_exception(
! 311: #else
! 312: real_parser_handler(
! 313: #endif
! 314: SAPI_info, dcfg);
! 315:
1.1 paf 316: // successful finish
317: } catch(const Exception& e) { // global problem
318: // don't allocate anything on pool here:
319: // possible pool' exception not catch-ed now
320: // and there could be out-of-memory exception
1.7 ! paf 321: char buf[MAX_STRING];
! 322: snprintf(buf, MAX_STRING, "Unhandled exception %s",
! 323: e.comment());
1.1 paf 324: // log it
1.7 ! paf 325: SAPI::log(SAPI_info, "%s", buf);
1.1 paf 326:
327: //
1.7 ! paf 328: int content_length=strlen(buf);
1.1 paf 329:
330: // prepare header
331: SAPI::add_header_attribute(SAPI_info, "content-type", "text/plain");
332: char content_length_cstr[MAX_NUMBER];
333: snprintf(content_length_cstr, MAX_NUMBER, "%u", content_length);
334: SAPI::add_header_attribute(SAPI_info, "content-length", content_length_cstr);
335:
336: // send header
337: SAPI::send_header(SAPI_info);
338:
339: // send body
340: if(!r->header_only)
1.7 ! paf 341: SAPI::send_body(SAPI_info, buf, content_length);
1.1 paf 342:
343: // unsuccessful finish
344: }
345:
346: /*
347: * We did what we wanted to do, so tell the rest of the server we
348: * succeeded.
349: */
350: return PA_OK;
351: }
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