Annotation of parser3/src/targets/apache/mod_parser3_core.C, revision 1.42
1.1 moko 1: /** @file
1.8 moko 2: Parser: apache 1.3/2.X module, part, compiled by parser3project.
1.1 moko 3:
1.37 moko 4: Copyright (c) 2001-2024 Art. Lebedev Studio (http://www.artlebedev.com)
1.36 moko 5: Authors: Konstantin Morshnev <moko@design.ru>, Alexandr Petrosian <paf@design.ru>
1.1 moko 6: */
7:
1.42 ! moko 8: volatile const char * IDENT_MOD_PARSER3_CORE_C="$Id: mod_parser3_core.C,v 1.41 2024/11/10 13:31:28 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;
1.42 ! moko 29: const char* parser3_mode="apache"; // $status:mode
1.7 moko 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 {
1.18 moko 38: // init libraries
1.1 moko 39: pa_globals_init();
40: } catch(const Exception& e) { // global problem
1.21 moko 41: SAPI::die("setup_module_cells failed: %s", e.comment());
1.1 moko 42: }
43: }
44:
45: void pa_destroy_module_cells() {
1.7 moko 46: if(!globals_inited)
47: return;
48:
1.1 moko 49: pa_globals_done();
50: }
51:
52:
53: //@{
54: /// SAPI func decl
55:
56: class SAPI_Info {
57: public:
58: pa_request_rec* r;
59: };
60:
61: void SAPI::log(SAPI_Info& SAPI_info, const char* fmt, ...) {
62: va_list args;
63: va_start(args,fmt);
64: char buf[MAX_LOG_STRING];
65: size_t size=vsnprintf(buf, MAX_LOG_STRING, fmt, args);
66: size=remove_crlf(buf, buf+size);
67: pa_ap_log_rerror(0, 0, PA_APLOG_ERR | PA_APLOG_NOERRNO, SAPI_info.r, "%s", buf);
68: va_end(args);
69: }
70:
1.21 moko 71: void SAPI::die(const char* fmt, ...) {
72: va_list args;
73: va_start(args, fmt);
1.1 moko 74: char buf[MAX_LOG_STRING];
75: size_t size=vsnprintf(buf, MAX_LOG_STRING, fmt, args);
76: size=remove_crlf(buf, buf+size);
77: pa_ap_log_error(PA_APLOG_MARK, PA_APLOG_EMERG, 0, "%s", buf);
1.21 moko 78: exit(1);
79: // va_end(args);
1.1 moko 80: }
81:
1.41 moko 82: void SAPI::send_error(SAPI_Info& SAPI_info, const char *exception_cstr, const char *status){
1.38 moko 83: // capitalized headers passed for preventing malloc during capitalization
1.41 moko 84: add_header_attribute(SAPI_info, HTTP_STATUS_CAPITALIZED, status);
85: add_header_attribute(SAPI_info, HTTP_CONTENT_TYPE_CAPITALIZED, "text/plain");
86: send_headers(SAPI_info);
87: send_body(SAPI_info, exception_cstr, strlen(exception_cstr));
1.38 moko 88: }
89:
1.11 moko 90: char* SAPI::Env::get(SAPI_Info& SAPI_info, const char* name) {
1.1 moko 91: const char* dont_return_me=pa_ap_table_get(SAPI_info.r->subprocess_env, name);
92: return dont_return_me?pa_strdup(dont_return_me):0;
93: }
94:
1.28 moko 95: bool SAPI::Env::set(SAPI_Info&, const char*, const char*) {
96: return false;
97: }
98:
1.1 moko 99: #ifndef DOXYGEN
100: struct SAPI_environment_append_info {
101: const char** cur;
102: };
103: #endif
1.22 moko 104:
1.1 moko 105: static int SAPI_environment_append(void *d, const char* k, const char* val) {
1.26 moko 106: if(k && val) {
107: SAPI_environment_append_info& info=*static_cast<SAPI_environment_append_info *>(d);
1.30 moko 108: *info.cur++=pa_strcat(k, "=", val);
1.1 moko 109: }
110: return 1/*true*/;
111: }
1.22 moko 112:
1.11 moko 113: const char* const* SAPI::Env::get(SAPI_Info& SAPI_info) {
1.1 moko 114: const pa_table *t=SAPI_info.r->subprocess_env;
1.35 moko 115: const char** result=new(PointerGC) const char*[pa_ap_table_size(t)+1/*0*/];
1.1 moko 116: SAPI_environment_append_info info={result};
117: pa_ap_table_do(SAPI_environment_append, &info, t, 0); *info.cur=0; // mark EOE
118: return result;
119: }
120:
121: size_t SAPI::read_post(SAPI_Info& SAPI_info, char *buf, size_t max_bytes) {
1.21 moko 122: // pa_ap_log_error(PA_APLOG_MARK, PA_APLOG_DEBUG, SAPI_info.r->server, "mod_parser3: SAPI::read_post(max=%u)", max_bytes);
123:
1.1 moko 124: int retval;
125: if((retval = pa_ap_setup_client_block(SAPI_info.r, PA_REQUEST_CHUNKED_ERROR)))
126: return 0;
127: if(!pa_ap_should_client_block(SAPI_info.r))
128: return 0;
129:
130: uint total_read_bytes=0;
131: void (*handler)(int)=pa_signal(PA_SIGPIPE, PA_SIG_IGN);
132: while (total_read_bytes<max_bytes) {
133: pa_ap_hard_timeout("Read POST information", SAPI_info.r); /* start timeout timer */
134: uint read_bytes=
135: pa_ap_get_client_block(SAPI_info.r, buf+total_read_bytes, max_bytes-total_read_bytes);
136: pa_ap_reset_timeout(SAPI_info.r);
137: if (read_bytes<=0)
138: break;
139: total_read_bytes+=read_bytes;
140: }
141: pa_signal(PA_SIGPIPE, handler);
142: return total_read_bytes;
143: }
144:
145: /// @test location provide with protocol. think about internal redirects
1.22 moko 146: void SAPI::add_header_attribute(SAPI_Info& SAPI_info, const char* dont_store_key, const char* dont_store_value) {
1.1 moko 147: if(strcasecmp(dont_store_key, "location")==0)
148: *SAPI_info.r->status=302;
149:
150: if(strcasecmp(dont_store_key, HTTP_CONTENT_TYPE)==0) {
151: /* r->content_type, *not* r->headers_out("Content-type"). If you don't
152: * set it, it will be filled in with the server's default type (typically
153: * "text/plain"). You *must* also ensure that r->content_type is lower
154: * case.
155: */
156: *SAPI_info.r->content_type = pa_ap_pstrdup(SAPI_info.r->pool, dont_store_value);
157: } else if(strcasecmp(dont_store_key, HTTP_STATUS)==0)
1.25 moko 158: *SAPI_info.r->status=atoi(dont_store_value);
1.1 moko 159: else
160: pa_ap_table_addn(SAPI_info.r->headers_out,
161: pa_ap_pstrdup(SAPI_info.r->pool, capitalize(dont_store_key)),
162: pa_ap_pstrdup(SAPI_info.r->pool, dont_store_value));
163: }
164:
1.39 moko 165: void SAPI::send_headers(SAPI_Info& SAPI_info) {
1.1 moko 166: pa_ap_hard_timeout("Send header", SAPI_info.r);
167: pa_ap_send_http_header(SAPI_info.r);
168: pa_ap_kill_timeout(SAPI_info.r);
169: }
170:
1.41 moko 171: void SAPI::clear_headers(SAPI_Info&) {
1.39 moko 172: }
173:
1.1 moko 174: size_t SAPI::send_body(SAPI_Info& SAPI_info, const void *buf, size_t size) {
175: pa_ap_hard_timeout("Send body", SAPI_info.r);
176: size = (size_t)pa_ap_rwrite(buf, size, SAPI_info.r);
177: pa_ap_kill_timeout(SAPI_info.r);
178: return size;
179: }
180:
181: //@}
182:
183: /**
184: main workhorse
185: @todo intelligent cache-control
186: */
187: static void real_parser_handler(SAPI_Info& SAPI_info, Parser_module_config *dcfg) {
188: // collect garbage from prev request
1.34 moko 189: pa_gc_collect();
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");
1.27 moko 204: request_info.content_length=pa_atoul(SAPI::Env::get(SAPI_info, "CONTENT_LENGTH"));
1.11 moko 205: request_info.cookie=SAPI::Env::get(SAPI_info, "HTTP_COOKIE");
1.1 moko 206: request_info.mail_received=false;
207:
208: // prepare to process request
1.29 moko 209: Request request(SAPI_info, request_info, String::Language(String::L_HTML|String::L_OPTIMIZE_BIT));
1.1 moko 210:
211: // process the request
1.31 moko 212: const char *config=dcfg->parser_config_filespec;
213: #ifdef SYSTEM_CONFIG_FILE
214: if(!config && entry_exists(SYSTEM_CONFIG_FILE)){
215: config=SYSTEM_CONFIG_FILE;
216: }
217: #endif
218: request.core(config, SAPI_info.r->header_only!=0);
1.1 moko 219: }
220:
221: #ifdef PA_SUPPRESS_SYSTEM_EXCEPTION
1.20 moko 222: static const Exception call_real_parser_handler__do_PEH_return_it(SAPI_Info& SAPI_info, Parser_module_config *dcfg) {
1.1 moko 223: try {
224: real_parser_handler(SAPI_info, dcfg);
225: } catch(const Exception& e) {
226: return e;
227: }
228:
229: return Exception();
230: }
1.20 moko 231:
232: static void call_real_parser_handler__supress_system_exception(SAPI_Info& SAPI_info, Parser_module_config *dcfg) {
1.1 moko 233: Exception parser_exception;
234: LPEXCEPTION_POINTERS system_exception=0;
235:
236: __try {
1.20 moko 237: parser_exception=call_real_parser_handler__do_PEH_return_it(SAPI_info, dcfg);
238: } __except ( (system_exception=GetExceptionInformation()), EXCEPTION_EXECUTE_HANDLER) {
1.1 moko 239: if(system_exception)
240: if(_EXCEPTION_RECORD *er=system_exception->ExceptionRecord)
1.20 moko 241: throw Exception("system", 0, "0x%08X at 0x%08X", er->ExceptionCode, er->ExceptionAddress);
1.1 moko 242: else
1.20 moko 243: throw Exception("system", 0, "<no exception record>");
1.1 moko 244: else
1.20 moko 245: throw Exception("system", 0, "<no exception information>");
1.1 moko 246: }
247:
248: if(parser_exception)
249: throw Exception(parser_exception);
250: }
251: #endif
252:
253: /// @test r->finfo.st_mode check seems to work only on win32
254: int pa_parser_handler(pa_request_rec *r, Parser_module_config *dcfg) {
255: // SAPI info
256: SAPI_Info SAPI_info; SAPI_info.r=r;
257:
1.24 moko 258: if(r->file_not_found)
1.1 moko 259: return PA_HTTP_NOT_FOUND;
260:
261: try { // global try
262: #ifdef PA_SUPPRESS_SYSTEM_EXCEPTION
263: call_real_parser_handler__supress_system_exception(
264: #else
265: real_parser_handler(
266: #endif
267: SAPI_info, dcfg);
268:
269: // successful finish
1.40 moko 270: } catch(const Exception& e) { // just in case
1.1 moko 271: // log it
1.24 moko 272: SAPI::log(SAPI_info, "%s", e.comment());
1.26 moko 273: SAPI::send_error(SAPI_info, e.comment());
1.1 moko 274: }
275:
276: /*
277: * We did what we wanted to do, so tell the rest of the server we
278: * succeeded.
279: */
280: return PA_OK;
281: }
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