Annotation of parser3/src/targets/apache/mod_parser3_core.C, revision 1.25
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:
1.25 ! moko 8: volatile const char * IDENT_MOD_PARSER3_CORE_C="$Id: mod_parser3_core.C,v 1.24 2020/10/12 20:57:08 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
1.22 moko 91:
1.1 moko 92: static const char* mk_env_pair(const char* key, const char* value) {
93: char *result=new(PointerFreeGC) char[strlen(key)+1/*=*/+strlen(value)+1/*0*/];
94: strcpy(result, key); strcat(result, "="); strcat(result, value);
95: return result;
96: }
1.22 moko 97:
1.1 moko 98: static int SAPI_environment_append(void *d, const char* k, const char* val) {
99: if( k && val ) {
100: SAPI_environment_append_info& info=
101: *static_cast<SAPI_environment_append_info *>(d);
102: *info.cur++=mk_env_pair(k, val);
103: }
104: return 1/*true*/;
105: }
1.22 moko 106:
1.11 moko 107: const char* const* SAPI::Env::get(SAPI_Info& SAPI_info) {
1.1 moko 108: const pa_table *t=SAPI_info.r->subprocess_env;
1.12 moko 109: const char** result=new const char*[pa_ap_table_size(t)+1/*0*/];
1.1 moko 110: SAPI_environment_append_info info={result};
111: pa_ap_table_do(SAPI_environment_append, &info, t, 0); *info.cur=0; // mark EOE
112: return result;
113: }
114:
115: size_t SAPI::read_post(SAPI_Info& SAPI_info, char *buf, size_t max_bytes) {
1.21 moko 116: // pa_ap_log_error(PA_APLOG_MARK, PA_APLOG_DEBUG, SAPI_info.r->server, "mod_parser3: SAPI::read_post(max=%u)", max_bytes);
117:
1.1 moko 118: int retval;
119: if((retval = pa_ap_setup_client_block(SAPI_info.r, PA_REQUEST_CHUNKED_ERROR)))
120: return 0;
121: if(!pa_ap_should_client_block(SAPI_info.r))
122: return 0;
123:
124: uint total_read_bytes=0;
125: void (*handler)(int)=pa_signal(PA_SIGPIPE, PA_SIG_IGN);
126: while (total_read_bytes<max_bytes) {
127: pa_ap_hard_timeout("Read POST information", SAPI_info.r); /* start timeout timer */
128: uint read_bytes=
129: pa_ap_get_client_block(SAPI_info.r, buf+total_read_bytes, max_bytes-total_read_bytes);
130: pa_ap_reset_timeout(SAPI_info.r);
131: if (read_bytes<=0)
132: break;
133: total_read_bytes+=read_bytes;
134: }
135: pa_signal(PA_SIGPIPE, handler);
136: return total_read_bytes;
137: }
138:
139: /// @test location provide with protocol. think about internal redirects
1.22 moko 140: void SAPI::add_header_attribute(SAPI_Info& SAPI_info, const char* dont_store_key, const char* dont_store_value) {
1.1 moko 141: if(strcasecmp(dont_store_key, "location")==0)
142: *SAPI_info.r->status=302;
143:
144: if(strcasecmp(dont_store_key, HTTP_CONTENT_TYPE)==0) {
145: /* r->content_type, *not* r->headers_out("Content-type"). If you don't
146: * set it, it will be filled in with the server's default type (typically
147: * "text/plain"). You *must* also ensure that r->content_type is lower
148: * case.
149: */
150: *SAPI_info.r->content_type = pa_ap_pstrdup(SAPI_info.r->pool, dont_store_value);
151: } else if(strcasecmp(dont_store_key, HTTP_STATUS)==0)
1.25 ! moko 152: *SAPI_info.r->status=atoi(dont_store_value);
1.1 moko 153: else
154: pa_ap_table_addn(SAPI_info.r->headers_out,
155: pa_ap_pstrdup(SAPI_info.r->pool, capitalize(dont_store_key)),
156: pa_ap_pstrdup(SAPI_info.r->pool, dont_store_value));
157: }
158:
159: void SAPI::send_header(SAPI_Info& SAPI_info) {
160: pa_ap_hard_timeout("Send header", SAPI_info.r);
161: pa_ap_send_http_header(SAPI_info.r);
162: pa_ap_kill_timeout(SAPI_info.r);
163: }
164:
165: size_t SAPI::send_body(SAPI_Info& SAPI_info, const void *buf, size_t size) {
166: pa_ap_hard_timeout("Send body", SAPI_info.r);
167: size = (size_t)pa_ap_rwrite(buf, size, SAPI_info.r);
168: pa_ap_kill_timeout(SAPI_info.r);
169: return size;
170: }
171:
172: //@}
173:
174: /**
175: main workhorse
176: @todo intelligent cache-control
177: */
178: static void real_parser_handler(SAPI_Info& SAPI_info, Parser_module_config *dcfg) {
179: // collect garbage from prev request
1.8 moko 180: #ifndef PA_DEBUG_DISABLE_GC
181: GC_dont_gc=0;
182: GC_gcollect();
183: GC_dont_gc=1;
1.10 moko 184: #endif
1.1 moko 185:
186: // populate env
187: pa_ap_add_common_vars(SAPI_info.r);
188: pa_ap_add_cgi_vars(SAPI_info.r);
189:
190: // Request info
191: Request_info request_info; memset(&request_info, 0, sizeof(request_info));
192:
1.11 moko 193: request_info.document_root=SAPI::Env::get(SAPI_info, "DOCUMENT_ROOT");
1.1 moko 194: request_info.path_translated=SAPI_info.r->filename;
195: request_info.method=SAPI_info.r->method;
196: request_info.query_string=SAPI_info.r->args;
1.15 moko 197: request_info.uri=request_info.strip_absolute_uri(SAPI::Env::get(SAPI_info, "REQUEST_URI"));
1.11 moko 198: request_info.content_type=SAPI::Env::get(SAPI_info, "CONTENT_TYPE");
1.23 moko 199: request_info.content_length=pa_atoui(SAPI::Env::get(SAPI_info, "CONTENT_LENGTH"), 10);
1.11 moko 200: request_info.cookie=SAPI::Env::get(SAPI_info, "HTTP_COOKIE");
1.1 moko 201: request_info.mail_received=false;
202:
203: // prepare to process request
204: Request request(
205: SAPI_info,
206: request_info,
1.3 moko 207: String::Language(String::L_HTML|String::L_OPTIMIZE_BIT)
1.1 moko 208: );
209:
210: // process the request
211: request.core(
212: dcfg->parser_config_filespec, true, // /path/to/config
213: SAPI_info.r->header_only!=0);
214: }
215:
216: #ifdef PA_SUPPRESS_SYSTEM_EXCEPTION
1.20 moko 217: static const Exception call_real_parser_handler__do_PEH_return_it(SAPI_Info& SAPI_info, Parser_module_config *dcfg) {
1.1 moko 218: try {
219: real_parser_handler(SAPI_info, dcfg);
220: } catch(const Exception& e) {
221: return e;
222: }
223:
224: return Exception();
225: }
1.20 moko 226:
227: static void call_real_parser_handler__supress_system_exception(SAPI_Info& SAPI_info, Parser_module_config *dcfg) {
1.1 moko 228: Exception parser_exception;
229: LPEXCEPTION_POINTERS system_exception=0;
230:
231: __try {
1.20 moko 232: parser_exception=call_real_parser_handler__do_PEH_return_it(SAPI_info, dcfg);
233: } __except ( (system_exception=GetExceptionInformation()), EXCEPTION_EXECUTE_HANDLER) {
1.1 moko 234: if(system_exception)
235: if(_EXCEPTION_RECORD *er=system_exception->ExceptionRecord)
1.20 moko 236: throw Exception("system", 0, "0x%08X at 0x%08X", er->ExceptionCode, er->ExceptionAddress);
1.1 moko 237: else
1.20 moko 238: throw Exception("system", 0, "<no exception record>");
1.1 moko 239: else
1.20 moko 240: throw Exception("system", 0, "<no exception information>");
1.1 moko 241: }
242:
243: if(parser_exception)
244: throw Exception(parser_exception);
245: }
246: #endif
247:
248: /// @test r->finfo.st_mode check seems to work only on win32
249: int pa_parser_handler(pa_request_rec *r, Parser_module_config *dcfg) {
250: // SAPI info
251: SAPI_Info SAPI_info; SAPI_info.r=r;
252:
1.24 moko 253: if(r->file_not_found)
1.1 moko 254: return PA_HTTP_NOT_FOUND;
255:
256: try { // global try
257: #ifdef PA_SUPPRESS_SYSTEM_EXCEPTION
258: call_real_parser_handler__supress_system_exception(
259: #else
260: real_parser_handler(
261: #endif
262: SAPI_info, dcfg);
263:
264: // successful finish
1.24 moko 265: } catch(const Exception& e) { // exception in unhandled exception
1.1 moko 266: // log it
1.24 moko 267: SAPI::log(SAPI_info, "%s", e.comment());
1.1 moko 268:
269: // prepare header
270: // capitalized headers are used for preventing malloc during capitalization
271: SAPI::add_header_attribute(SAPI_info, HTTP_CONTENT_TYPE_CAPITALIZED, "text/plain");
272:
273: // send header
274: SAPI::send_header(SAPI_info);
275:
276: // send body
277: if(!r->header_only)
1.24 moko 278: SAPI::send_body(SAPI_info, e.comment(), strlen(e.comment()));
1.1 moko 279:
280: // unsuccessful finish
281: }
282:
283: /*
284: * We did what we wanted to do, so tell the rest of the server we
285: * succeeded.
286: */
287: return PA_OK;
288: }
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