Annotation of parser3/src/targets/apache/mod_parser3_core.C, revision 1.21
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:
1.21 ! moko 8: volatile const char * IDENT_MOD_PARSER3_CORE_C="$Id: mod_parser3_core.C,v 1.20 2020/08/13 10:52:34 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:
1.17 moko 21: #if defined(_MSC_VER) && !defined(_DEBUG)
1.9 moko 22: # include <windows.h>
1.1 moko 23: # define PA_SUPPRESS_SYSTEM_EXCEPTION
24: #endif
25:
26: // generals
27:
1.7 moko 28: static bool globals_inited=false;
29:
1.1 moko 30: void pa_setup_module_cells() {
31: if(globals_inited)
32: return;
33: globals_inited=true;
34:
35: /// no trying to __try here [yet]
36: try {
1.18 moko 37: // init libraries
1.1 moko 38: pa_globals_init();
39: } catch(const Exception& e) { // global problem
1.21 ! moko 40: SAPI::die("setup_module_cells failed: %s", e.comment());
1.1 moko 41: }
42: }
43:
44: void pa_destroy_module_cells() {
1.7 moko 45: if(!globals_inited)
46: return;
47:
1.1 moko 48: pa_globals_done();
49: }
50:
51:
52: //@{
53: /// SAPI func decl
54:
55: class SAPI_Info {
56: public:
57: pa_request_rec* r;
58: };
59:
60: void SAPI::log(SAPI_Info& SAPI_info, const char* fmt, ...) {
61: va_list args;
62: va_start(args,fmt);
63: char buf[MAX_LOG_STRING];
64: size_t size=vsnprintf(buf, MAX_LOG_STRING, fmt, args);
65: size=remove_crlf(buf, buf+size);
66: pa_ap_log_rerror(0, 0, PA_APLOG_ERR | PA_APLOG_NOERRNO, SAPI_info.r, "%s", buf);
67: va_end(args);
68: }
69:
1.21 ! moko 70: void SAPI::die(const char* fmt, ...) {
! 71: va_list args;
! 72: va_start(args, fmt);
1.1 moko 73: char buf[MAX_LOG_STRING];
74: size_t size=vsnprintf(buf, MAX_LOG_STRING, fmt, args);
75: size=remove_crlf(buf, buf+size);
76: pa_ap_log_error(PA_APLOG_MARK, PA_APLOG_EMERG, 0, "%s", buf);
1.21 ! moko 77: exit(1);
! 78: // va_end(args);
1.1 moko 79: }
80:
1.11 moko 81: char* SAPI::Env::get(SAPI_Info& SAPI_info, const char* name) {
1.1 moko 82: const char* dont_return_me=pa_ap_table_get(SAPI_info.r->subprocess_env, name);
83: return dont_return_me?pa_strdup(dont_return_me):0;
84: }
85:
86: #ifndef DOXYGEN
87: struct SAPI_environment_append_info {
88: const char** cur;
89: };
90: #endif
91: static const char* mk_env_pair(const char* key, const char* value) {
92: char *result=new(PointerFreeGC) char[strlen(key)+1/*=*/+strlen(value)+1/*0*/];
93: strcpy(result, key); strcat(result, "="); strcat(result, value);
94: return result;
95: }
96: static int SAPI_environment_append(void *d, const char* k, const char* val) {
97: if( k && val ) {
98: SAPI_environment_append_info& info=
99: *static_cast<SAPI_environment_append_info *>(d);
100: *info.cur++=mk_env_pair(k, val);
101: }
102: return 1/*true*/;
103: }
1.11 moko 104: const char* const* SAPI::Env::get(SAPI_Info& SAPI_info) {
1.1 moko 105: const pa_table *t=SAPI_info.r->subprocess_env;
1.12 moko 106: const char** result=new const char*[pa_ap_table_size(t)+1/*0*/];
1.1 moko 107: SAPI_environment_append_info info={result};
108: pa_ap_table_do(SAPI_environment_append, &info, t, 0); *info.cur=0; // mark EOE
109: return result;
110: }
111:
112: size_t SAPI::read_post(SAPI_Info& SAPI_info, char *buf, size_t max_bytes) {
1.21 ! moko 113: // pa_ap_log_error(PA_APLOG_MARK, PA_APLOG_DEBUG, SAPI_info.r->server, "mod_parser3: SAPI::read_post(max=%u)", max_bytes);
! 114:
1.1 moko 115: int retval;
116: if((retval = pa_ap_setup_client_block(SAPI_info.r, PA_REQUEST_CHUNKED_ERROR)))
117: return 0;
118: if(!pa_ap_should_client_block(SAPI_info.r))
119: return 0;
120:
121: uint total_read_bytes=0;
122: void (*handler)(int)=pa_signal(PA_SIGPIPE, PA_SIG_IGN);
123: while (total_read_bytes<max_bytes) {
124: pa_ap_hard_timeout("Read POST information", SAPI_info.r); /* start timeout timer */
125: uint read_bytes=
126: pa_ap_get_client_block(SAPI_info.r, buf+total_read_bytes, max_bytes-total_read_bytes);
127: pa_ap_reset_timeout(SAPI_info.r);
128: if (read_bytes<=0)
129: break;
130: total_read_bytes+=read_bytes;
131: }
132: pa_signal(PA_SIGPIPE, handler);
133: return total_read_bytes;
134: }
135:
136: /// @test location provide with protocol. think about internal redirects
137: void SAPI::add_header_attribute(SAPI_Info& SAPI_info,
138: const char* dont_store_key, const char* dont_store_value) {
139: if(strcasecmp(dont_store_key, "location")==0)
140: *SAPI_info.r->status=302;
141:
142: if(strcasecmp(dont_store_key, HTTP_CONTENT_TYPE)==0) {
143: /* r->content_type, *not* r->headers_out("Content-type"). If you don't
144: * set it, it will be filled in with the server's default type (typically
145: * "text/plain"). You *must* also ensure that r->content_type is lower
146: * case.
147: */
148: *SAPI_info.r->content_type = pa_ap_pstrdup(SAPI_info.r->pool, dont_store_value);
149: } else if(strcasecmp(dont_store_key, HTTP_STATUS)==0)
150: *SAPI_info.r->status=atoi(dont_store_value);
151: else
152: pa_ap_table_addn(SAPI_info.r->headers_out,
153: pa_ap_pstrdup(SAPI_info.r->pool, capitalize(dont_store_key)),
154: pa_ap_pstrdup(SAPI_info.r->pool, dont_store_value));
155: }
156:
157: void SAPI::send_header(SAPI_Info& SAPI_info) {
158: pa_ap_hard_timeout("Send header", SAPI_info.r);
159: pa_ap_send_http_header(SAPI_info.r);
160: pa_ap_kill_timeout(SAPI_info.r);
161: }
162:
163: size_t SAPI::send_body(SAPI_Info& SAPI_info, const void *buf, size_t size) {
164: pa_ap_hard_timeout("Send body", SAPI_info.r);
165: size = (size_t)pa_ap_rwrite(buf, size, SAPI_info.r);
166: pa_ap_kill_timeout(SAPI_info.r);
167: return size;
168: }
169:
170: //@}
171:
1.8 moko 172: #ifndef PA_DEBUG_DISABLE_GC
1.10 moko 173: #ifndef _MSC_VER
1.8 moko 174: extern long GC_large_alloc_warn_suppressed;
1.1 moko 175: #endif
1.10 moko 176: #endif
1.1 moko 177:
178: /**
179: main workhorse
180:
181: @todo intelligent cache-control
182: */
183: static void real_parser_handler(SAPI_Info& SAPI_info, Parser_module_config *dcfg) {
184: // collect garbage from prev request
1.8 moko 185: #ifndef PA_DEBUG_DISABLE_GC
186: GC_dont_gc=0;
187: GC_gcollect();
188: GC_dont_gc=1;
1.10 moko 189: #endif
1.1 moko 190:
191: // populate env
192: pa_ap_add_common_vars(SAPI_info.r);
193: pa_ap_add_cgi_vars(SAPI_info.r);
194:
195: // Request info
196: Request_info request_info; memset(&request_info, 0, sizeof(request_info));
197:
1.11 moko 198: request_info.document_root=SAPI::Env::get(SAPI_info, "DOCUMENT_ROOT");
1.1 moko 199: request_info.path_translated=SAPI_info.r->filename;
200: request_info.method=SAPI_info.r->method;
201: request_info.query_string=SAPI_info.r->args;
1.15 moko 202: request_info.uri=request_info.strip_absolute_uri(SAPI::Env::get(SAPI_info, "REQUEST_URI"));
1.11 moko 203: request_info.content_type=SAPI::Env::get(SAPI_info, "CONTENT_TYPE");
204: const char* content_length=SAPI::Env::get(SAPI_info, "CONTENT_LENGTH");
1.1 moko 205: request_info.content_length=content_length?atoi(content_length):0;
1.11 moko 206: request_info.cookie=SAPI::Env::get(SAPI_info, "HTTP_COOKIE");
1.1 moko 207: request_info.mail_received=false;
208:
209: // prepare to process request
210: Request request(
211: SAPI_info,
212: request_info,
1.3 moko 213: String::Language(String::L_HTML|String::L_OPTIMIZE_BIT)
1.1 moko 214: );
215:
216: // process the request
217: request.core(
218: dcfg->parser_config_filespec, true, // /path/to/config
219: SAPI_info.r->header_only!=0);
220: }
221:
222: #ifdef PA_SUPPRESS_SYSTEM_EXCEPTION
1.20 moko 223: static const Exception call_real_parser_handler__do_PEH_return_it(SAPI_Info& SAPI_info, Parser_module_config *dcfg) {
1.1 moko 224: try {
225: real_parser_handler(SAPI_info, dcfg);
226: } catch(const Exception& e) {
227: return e;
228: }
229:
230: return Exception();
231: }
1.20 moko 232:
233: static void call_real_parser_handler__supress_system_exception(SAPI_Info& SAPI_info, Parser_module_config *dcfg) {
1.1 moko 234: Exception parser_exception;
235: LPEXCEPTION_POINTERS system_exception=0;
236:
237: __try {
1.20 moko 238: parser_exception=call_real_parser_handler__do_PEH_return_it(SAPI_info, dcfg);
239: } __except ( (system_exception=GetExceptionInformation()), EXCEPTION_EXECUTE_HANDLER) {
1.1 moko 240: if(system_exception)
241: if(_EXCEPTION_RECORD *er=system_exception->ExceptionRecord)
1.20 moko 242: throw Exception("system", 0, "0x%08X at 0x%08X", er->ExceptionCode, er->ExceptionAddress);
1.1 moko 243: else
1.20 moko 244: throw Exception("system", 0, "<no exception record>");
1.1 moko 245: else
1.20 moko 246: throw Exception("system", 0, "<no exception information>");
1.1 moko 247: }
248:
249: if(parser_exception)
250: throw Exception(parser_exception);
251: }
252: #endif
253:
254: /// @test r->finfo.st_mode check seems to work only on win32
255: int pa_parser_handler(pa_request_rec *r, Parser_module_config *dcfg) {
256: // SAPI info
257: SAPI_Info SAPI_info; SAPI_info.r=r;
258:
1.2 moko 259: if(r->file_not_found )
1.1 moko 260: return PA_HTTP_NOT_FOUND;
261:
262: try { // global try
263: #ifdef PA_SUPPRESS_SYSTEM_EXCEPTION
264: call_real_parser_handler__supress_system_exception(
265: #else
266: real_parser_handler(
267: #endif
268: SAPI_info, dcfg);
269:
270: // successful finish
271: } catch(const Exception& e) { // global problem
272: // don't allocate anything on pool here:
273: // possible pool' exception not catch-ed now
274: // and there could be out-of-memory exception
275: char buf[MAX_STRING];
276: snprintf(buf, MAX_STRING, "Unhandled exception %s",
277: e.comment());
278: // log it
279: SAPI::log(SAPI_info, "%s", buf);
280:
281: //
282: int content_length=strlen(buf);
283:
284: // prepare header
285: // capitalized headers are used for preventing malloc during capitalization
286: SAPI::add_header_attribute(SAPI_info, HTTP_CONTENT_TYPE_CAPITALIZED, "text/plain");
287: // don't use 'format' function because it calls malloc
288: char content_length_cstr[MAX_NUMBER];
289: snprintf(content_length_cstr, MAX_NUMBER, "%u", content_length);
290: SAPI::add_header_attribute(SAPI_info, HTTP_CONTENT_LENGTH_CAPITALIZED, content_length_cstr);
291:
292: // send header
293: SAPI::send_header(SAPI_info);
294:
295: // send body
296: if(!r->header_only)
297: SAPI::send_body(SAPI_info, buf, content_length);
298:
299: // unsuccessful finish
300: }
301:
302: /*
303: * We did what we wanted to do, so tell the rest of the server we
304: * succeeded.
305: */
306: return PA_OK;
307: }
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