Annotation of parser3/src/targets/cgi/parser3.C, revision 1.281
1.27 paf 1: /** @file
2: Parser: scripting and CGI main.
3:
1.277 moko 4: Copyright (c) 2001-2017 Art. Lebedev Studio (http://www.artlebedev.com)
1.154 paf 5: Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
1.189 paf 6: */
1.27 paf 7:
1.281 ! moko 8: volatile const char * IDENT_PARSER3_C="$Id: parser3.C,v 1.280 2019/12/25 22:01:03 moko Exp $";
1.1 paf 9:
1.40 paf 10: #include "pa_config_includes.h"
1.3 paf 11:
1.37 paf 12: #include "pa_sapi.h"
1.76 paf 13: #include "classes.h"
1.24 paf 14: #include "pa_common.h"
1.2 paf 15: #include "pa_request.h"
1.68 paf 16: #include "pa_version.h"
1.266 moko 17: #include "pa_vconsole.h"
1.207 paf 18:
1.263 moko 19: #ifdef _MSC_VER
1.264 moko 20: #include <crtdbg.h>
1.263 moko 21: #include <windows.h>
22: #include <direct.h>
1.120 parser 23: #endif
24:
1.232 paf 25: // defines
1.231 paf 26:
1.233 paf 27: // comment remove me after debugging
1.234 paf 28: //#define PA_DEBUG_CGI_ENTRY_EXIT "c:\\parser\\debug-parser3.log"
1.233 paf 29:
1.278 moko 30: #if defined(_MSC_VER) && !defined(_DEBUG)
1.231 paf 31: # define PA_SUPPRESS_SYSTEM_EXCEPTION
32: #endif
33:
1.109 parser 34: // consts
1.84 parser 35:
1.175 paf 36: #define REDIRECT_PREFIX "REDIRECT_"
1.181 paf 37: #define PARSER_CONFIG_ENV_NAME "CGI_PARSER_CONFIG"
1.226 paf 38: #define PARSER_LOG_ENV_NAME "CGI_PARSER_LOG"
1.159 paf 39:
1.42 paf 40: /// IIS refuses to read bigger chunks
1.264 moko 41: const size_t READ_POST_CHUNK_SIZE=0x400*0x400; // 1M
1.42 paf 42:
1.218 paf 43: static const char* argv0;
44: static const char* config_filespec_cstr=0;
1.193 paf 45: static bool fail_on_config_read_problem=true;
1.192 paf 46:
1.245 misha 47: static int args_skip=1;
48: static char** argv_all = NULL;
49:
1.184 paf 50: static bool cgi; ///< we were started as CGI?
51: static bool mail_received=false; ///< we were started with -m option? [asked to parse incoming message to $mail:received]
1.5 paf 52:
1.201 paf 53: // for signal handlers
54: Request *request=0;
1.218 paf 55: Request_info *request_info=0;
56: bool execution_canceled=false;
1.201 paf 57:
1.46 paf 58: // SAPI
1.86 parser 59:
1.275 moko 60: class SAPI_Info {
61: public:
1.274 moko 62: int http_response_code;
63: } SAPI_info = { 0 };
1.218 paf 64:
65: static void log(const char* fmt, va_list args) {
1.193 paf 66: bool opened=false;
1.61 paf 67: FILE *f=0;
68:
1.226 paf 69: const char* log_by_env=getenv(PARSER_LOG_ENV_NAME);
70: if(!log_by_env)
71: log_by_env=getenv(REDIRECT_PREFIX PARSER_LOG_ENV_NAME);
72: if(log_by_env) {
73: f=fopen(log_by_env, "at");
74: opened=f!=0;
75: }
1.272 moko 76: #ifdef PA_DEBUG_CGI_ENTRY_EXIT
1.233 paf 77: f=fopen(PA_DEBUG_CGI_ENTRY_EXIT, "at");
78: opened=f!=0;
79: #endif
1.226 paf 80:
81: if(!opened && config_filespec_cstr) {
1.193 paf 82: char beside_config_path[MAX_STRING];
83: strncpy(beside_config_path, config_filespec_cstr, MAX_STRING-1); beside_config_path[MAX_STRING-1]=0;
1.272 moko 84: if(!(rsplit(beside_config_path, '/') || rsplit(beside_config_path, '\\'))) { // strip filename
1.193 paf 85: // no path, just filename
86: beside_config_path[0]='.'; beside_config_path[1]=0;
87: }
88:
89: char file_spec[MAX_STRING];
1.272 moko 90: snprintf(file_spec, MAX_STRING, "%s/parser3.log", beside_config_path);
1.193 paf 91: f=fopen(file_spec, "at");
92: opened=f!=0;
93: }
1.192 paf 94: // fallback to stderr
1.61 paf 95: if(!opened)
96: f=stderr;
1.208 paf 97:
98: // use no memory [so that we could log out-of-memory error]
99: setbuf(f, 0); // stderr stream is unbuffered by default, but still...
1.61 paf 100:
101: // prefix
102: time_t t=time(0);
1.218 paf 103: if(const char* stamp=ctime(&t)) { // never saw that
1.173 paf 104: if(size_t len=strlen(stamp)) // saw once stamp being =""
1.272 moko 105: fprintf(f, "[%.*s] [%u] ", (int)len-1, stamp, (unsigned int)getpid() );
1.171 paf 106: }
1.61 paf 107: // message
1.117 parser 108:
1.246 misha 109: char buf[MAX_LOG_STRING];
110: size_t size=vsnprintf(buf, MAX_LOG_STRING, fmt, args);
111: size=remove_crlf(buf, buf+size);
1.239 paf 112: fwrite(buf, size, 1, f);
113:
114: if(request_info)
1.261 moko 115: fprintf(f, " [uri=%s, method=%s, cl=%lu]",
1.239 paf 116: request_info->uri? request_info->uri: "<unknown>",
117: request_info->method? request_info->method: "<unknown>",
118: request_info->content_length);
119: else
120: fputs(" [no request info]", f);
1.117 parser 121:
1.61 paf 122: // newline
1.239 paf 123: fputs("\n", f);
1.61 paf 124:
125: if(opened)
126: fclose(f);
1.85 parser 127: else
128: fflush(f);
1.124 parser 129: }
1.272 moko 130:
1.236 paf 131: #ifdef PA_DEBUG_CGI_ENTRY_EXIT
1.233 paf 132: static void log(const char* fmt, ...) {
1.272 moko 133: va_list args;
1.233 paf 134: va_start(args,fmt);
135: log(fmt, args);
136: va_end(args);
137: }
1.236 paf 138: #endif
1.124 parser 139:
140: // appends to parser3.log located beside my binary if openable, to stderr otherwize
1.218 paf 141: void SAPI::log(SAPI_Info&, const char* fmt, ...) {
1.272 moko 142: va_list args;
1.124 parser 143: va_start(args,fmt);
144: ::log(fmt, args);
145: va_end(args);
146: }
147:
1.218 paf 148: static void die_or_abort(const char* fmt, va_list args, bool write_core) {
1.138 paf 149: // inform user
150:
1.134 paf 151: char body[MAX_STRING];
1.138 paf 152: int content_length=vsnprintf(body, MAX_STRING, fmt, args);
1.134 paf 153:
154: // prepare header
155: // let's be honest, that's bad we couldn't produce valid output
1.255 misha 156: // capitalized headers passed for preventing malloc during capitalization
157: SAPI::add_header_attribute(SAPI_info, HTTP_STATUS_CAPITALIZED, "500");
158: SAPI::add_header_attribute(SAPI_info, HTTP_CONTENT_TYPE_CAPITALIZED, "text/plain");
159: // don't use 'format' function because it calls malloc
160: char content_length_cstr[MAX_NUMBER];
161: snprintf(content_length_cstr, sizeof(content_length_cstr), "%u", content_length);
162: SAPI::add_header_attribute(SAPI_info, HTTP_CONTENT_LENGTH_CAPITALIZED, content_length_cstr);
1.134 paf 163:
164: // send header
1.218 paf 165: SAPI::send_header(SAPI_info);
1.134 paf 166:
167: // body
1.218 paf 168: SAPI::send_body(SAPI_info, body, content_length);
1.134 paf 169:
1.218 paf 170: // exit & try to produce core dump[unix] or invoke debugger[Win32 Debug version]
171: if(write_core) {
1.264 moko 172: #ifdef WIN32
1.218 paf 173: // IIS with abort failes to show STDOUT, it just barks "abnormal program termination"
174: exit(1);
1.214 paf 175: #else
1.218 paf 176: abort();
1.214 paf 177: #endif
1.272 moko 178: } else
1.218 paf 179: exit(1);
180: }
181:
182: void SAPI::die(const char* fmt, ...) {
1.258 moko 183: va_list args;
184:
185: // logging first, can't log inside die_or_abort due to vsnprintf (bug #106)
186: va_start(args,fmt);
187: ::log(fmt, args);
188: va_end(args);
189:
1.218 paf 190: va_start(args, fmt);
1.258 moko 191: die_or_abort(fmt, args, false /*write core?*/);
192: // va_end(args);
1.61 paf 193: }
194:
1.218 paf 195: void SAPI::abort(const char* fmt, ...) {
1.258 moko 196: va_list args;
197:
198: // logging first, can't log inside die_or_abort due to vsnprintf (bug #106)
199: va_start(args,fmt);
200: ::log(fmt, args);
201: va_end(args);
202:
1.218 paf 203: va_start(args, fmt);
1.258 moko 204: die_or_abort(fmt, args, true /*write core?*/);
205: // va_end(args);
1.28 paf 206: }
207:
1.267 moko 208: char* SAPI::Env::get(SAPI_Info& , const char* name) {
1.218 paf 209: if(char *local=getenv(name))
210: return pa_strdup(local);
211: else
212: return 0;
213: }
214:
1.267 moko 215: const char* const *SAPI::Env::get(SAPI_Info&) {
1.180 paf 216: #ifdef _MSC_VER
217: extern char **_environ;
218: return _environ;
219: #else
220: extern char **environ;
221: return environ;
222: #endif
223: }
224:
1.218 paf 225: size_t SAPI::read_post(SAPI_Info& , char *buf, size_t max_bytes) {
1.59 paf 226: size_t read_size=0;
1.12 paf 227: do {
1.272 moko 228: ssize_t chunk_size=read(fileno(stdin), buf+read_size, min(READ_POST_CHUNK_SIZE, max_bytes-read_size));
1.129 paf 229: if(chunk_size<=0)
1.12 paf 230: break;
231: read_size+=chunk_size;
232: } while(read_size<max_bytes);
233:
234: return read_size;
1.10 paf 235: }
236:
1.218 paf 237: void SAPI::add_header_attribute(SAPI_Info& , const char* dont_store_key, const char* dont_store_value) {
1.274 moko 238: if(strcasecmp(dont_store_key, HTTP_STATUS)==0)
239: SAPI_info.http_response_code=atoi(dont_store_value);
1.242 misha 240: if( cgi && (!request || !request->console.was_used()) )
1.254 misha 241: printf("%s: %s\n", capitalize(dont_store_key), dont_store_value);
1.19 paf 242: }
243:
1.218 paf 244: void SAPI::send_header(SAPI_Info& ) {
1.33 paf 245: if(cgi) {
1.20 paf 246: puts("");
1.33 paf 247: }
1.30 paf 248: }
1.20 paf 249:
1.229 paf 250: size_t SAPI::send_body(SAPI_Info& , const void *buf, size_t size) {
251: return stdout_write(buf, size);
1.58 paf 252: }
253:
1.218 paf 254: static void full_file_spec(const char* file_name, char *buf, size_t buf_size) {
1.210 paf 255: if(file_name)
1.167 paf 256: if(file_name[0]=='/'
257: #ifdef WIN32
1.210 paf 258: || file_name[0] && file_name[1]==':'
1.167 paf 259: #endif
1.279 moko 260: ){
261: strncpy(buf, file_name, buf_size-1); buf[buf_size-1]=0;
262: } else {
1.261 moko 263: char cwd[MAX_STRING];
264: snprintf(buf, buf_size, "%s/%s", getcwd(cwd, MAX_STRING) ? cwd : "", file_name);
1.167 paf 265: }
266: else
267: buf[0]=0;
1.166 paf 268: #ifdef WIN32
269: back_slashes_to_slashes(buf);
270: #endif
1.97 parser 271: }
272:
1.218 paf 273: static void log_signal(const char* signal_name) {
274: if(request_info)
1.219 paf 275: SAPI::log(SAPI_info, "%s received while %s. uri=%s, method=%s, cl=%u",
1.218 paf 276: signal_name,
1.272 moko 277: request ? "executing code" : "reading data",
1.218 paf 278: request_info->uri,
279: request_info->method,
280: request_info->content_length);
281: else
282: SAPI::log(SAPI_info, "%s received before or after processing request",
283: signal_name);
1.205 paf 284: }
285:
1.201 paf 286: #ifdef SIGUSR1
1.205 paf 287: static void SIGUSR1_handler(int /*sig*/){
288: log_signal("SIGUSR1");
1.201 paf 289: }
290: #endif
291:
292: #ifdef SIGPIPE
1.243 misha 293: #define SIGPIPE_NAME "SIGPIPE"
294: static const String sigpipe_name(SIGPIPE_NAME);
1.205 paf 295: static void SIGPIPE_handler(int /*sig*/){
1.243 misha 296: Value* sigpipe=0;
297: if(request)
1.251 misha 298: sigpipe=request->main_class.get_element(sigpipe_name);
1.243 misha 299: if(sigpipe && sigpipe->as_bool())
1.244 misha 300: log_signal(SIGPIPE_NAME);
1.243 misha 301:
1.218 paf 302: execution_canceled=true;
1.201 paf 303: if(request)
1.276 moko 304: request->set_skip(Request::SKIP_INTERRUPTED);
1.201 paf 305: }
306: #endif
307:
1.227 paf 308: #ifdef WIN32
309: const char* maybe_reconstruct_IIS_status_in_qs(const char* original)
310: {
1.228 paf 311: // 404;http://servername/page[?param=value...]
1.227 paf 312: // ';' should be urlencoded by HTTP standard, so we shouldn't get it from browser
313: // and can consider that as an indication that this is IIS way to report errors
314:
1.272 moko 315: if(original && isdigit((unsigned char)original[0]) && isdigit((unsigned char)original[1]) && isdigit((unsigned char)original[2]) && original[3]==';'){
1.227 paf 316: size_t original_len=strlen(original);
1.272 moko 317: char* reconstructed=new(PointerFreeGC) char[original_len +12/*IIS-STATUS=&*/ +14/*IIS-DOCUMENT=&*/ +1];
1.227 paf 318: char* cur=reconstructed;
319: memcpy(cur, "IIS-STATUS=", 11); cur+=11;
320: memcpy(cur, original, 3); cur+=3;
321: *cur++='&';
322:
1.228 paf 323: const char* qmark_at=strchr(original, '?');
1.227 paf 324: memcpy(cur, "IIS-DOCUMENT=", 13); cur+=13;
325: {
1.272 moko 326: size_t value_len=(qmark_at ? qmark_at-original : original_len)-4;
1.227 paf 327: memcpy(cur, original+4, value_len); cur+=value_len;
328: }
329:
330: if(qmark_at) {
331: *cur++='&';
332: strcpy(cur, qmark_at+1/*skip ? itself*/);
333: } else
334: *cur=0;
335:
336: return reconstructed;
337: }
338:
339: return original;
340: }
341: #endif
342:
1.256 misha 343:
344: class RequestController {
345: public:
346: RequestController(Request* r){
347: ::request=r;
348: }
349: ~RequestController(){
350: ::request=0;
351: }
352: };
353:
354:
1.40 paf 355: /**
1.122 parser 356: main workhorse
1.19 paf 357:
1.272 moko 358: @todo
359: IIS: remove trailing default-document[index.html] from $request.uri.
360: to do that we need to consult metabase,
361: wich is tested but seems slow.
1.40 paf 362: */
1.272 moko 363: static void real_parser_handler(const char* filespec_to_process, const char* request_method, bool header_only) {
1.231 paf 364:
1.280 moko 365: // init libraries
1.218 paf 366: pa_globals_init();
1.122 parser 367:
1.186 paf 368: if(!filespec_to_process || !*filespec_to_process)
1.233 paf 369: SAPI::die("Parser/%s"
370: #ifdef PA_DEBUG_CGI_ENTRY_EXIT
371: " with entry/exit tracing"
372: #endif
373: , PARSER_VERSION);
1.122 parser 374:
375: // Request info
1.218 paf 376: Request_info request_info; memset(&request_info, 0, sizeof(request_info));
1.166 paf 377: char document_root_buf[MAX_STRING];
1.122 parser 378: if(cgi) {
1.218 paf 379: if(const char* env_document_root=getenv("DOCUMENT_ROOT"))
1.122 parser 380: request_info.document_root=env_document_root;
1.218 paf 381: else if(const char* path_info=getenv("PATH_INFO")) {
1.122 parser 382: // IIS
1.166 paf 383: size_t len=min(sizeof(document_root_buf)-1, strlen(filespec_to_process)-strlen(path_info));
384: memcpy(document_root_buf, filespec_to_process, len); document_root_buf[len]=0;
385: request_info.document_root=document_root_buf;
1.122 parser 386: } else
1.272 moko 387: throw Exception(PARSER_RUNTIME, 0, "CGI: no PATH_INFO defined(in reinventing DOCUMENT_ROOT)");
1.122 parser 388: } else {
1.166 paf 389: full_file_spec("", document_root_buf, sizeof(document_root_buf));
390: request_info.document_root=document_root_buf;
1.122 parser 391: }
392: request_info.path_translated=filespec_to_process;
393: request_info.method=request_method ? request_method : "GET";
1.227 paf 394: const char* query_string=
395: #ifdef WIN32
396: maybe_reconstruct_IIS_status_in_qs
397: #endif
398: (getenv("QUERY_STRING"));
1.122 parser 399: request_info.query_string=query_string;
400: if(cgi) {
1.214 paf 401: // few absolute obligatory
1.218 paf 402: const char* path_info=getenv("PATH_INFO");
1.214 paf 403: if(!path_info)
404: SAPI::die("CGI: illegal call (missing PATH_INFO)");
1.218 paf 405: const char* script_name=getenv("SCRIPT_NAME");
1.214 paf 406: if(!script_name)
407: SAPI::die("CGI: illegal call (missing SCRIPT_NAME)");
408:
1.271 moko 409: const char* env_request_uri=request_info.strip_absolute_uri(getenv("REQUEST_URI"));
1.214 paf 410: if(env_request_uri)
1.122 parser 411: request_info.uri=env_request_uri;
1.214 paf 412: else
1.122 parser 413: if(query_string) {
1.272 moko 414: char* reconstructed_uri=new(PointerFreeGC) char[strlen(path_info) + 1/*'?'*/+ strlen(query_string) + 1/*0*/];
1.122 parser 415: strcpy(reconstructed_uri, path_info);
416: strcat(reconstructed_uri, "?");
417: strcat(reconstructed_uri, query_string);
418: request_info.uri=reconstructed_uri;
419: } else
420: request_info.uri=path_info;
1.214 paf 421:
422: if(env_request_uri) { // apache & others stuck to standards
423: /*
424: http://parser3/env.html?123 =OK
425: $request:uri=/env.html?123
426: REQUEST_URI='/env.html?123'
427: SCRIPT_NAME='/cgi-bin/parser3'
428: PATH_INFO='/env.html'
429:
430: http://parser3/cgi-bin/parser3/env.html?123 =ERROR
431: $request:uri=/cgi-bin/parser3/env.html?123
432: REQUEST_URI='/cgi-bin/parser3/env.html?123'
433: SCRIPT_NAME='/cgi-bin/parser3'
434: PATH_INFO='/env.html'
435: */
436: size_t script_name_len=strlen(script_name);
437: size_t uri_len=strlen(env_request_uri);
1.272 moko 438: if(strncmp(env_request_uri, script_name, script_name_len)==0 && script_name_len != uri_len) // under IIS they are the same
1.214 paf 439: SAPI::die("CGI: illegal call (1)");
440: } else { // seen on IIS5
441: /*
442: http://nestle/env.html?123 =OK
443: $request:uri=/env.html?123
444: REQUEST_URI=''
445: SCRIPT_NAME='/env.html'
446: PATH_INFO='/env.html'
447:
448: http://nestle/cgi-bin/parser3.exe/env.html =ERROR
449: $request:uri=/env.html
450: REQUEST_URI=''
451: SCRIPT_NAME='/cgi-bin/parser3.exe'
452: PATH_INFO='/env.html'
453: */
454: if(strcmp(script_name, path_info)!=0)
455: SAPI::die("CGI: illegal call (2)");
456: }
1.122 parser 457: } else
1.177 paf 458: request_info.uri="";
1.122 parser 459:
1.218 paf 460: request_info.content_type=getenv("CONTENT_TYPE");
461: const char* content_length=getenv("CONTENT_LENGTH");
1.122 parser 462: request_info.content_length=(content_length?atoi(content_length):0);
1.218 paf 463: request_info.cookie=getenv("HTTP_COOKIE");
1.184 paf 464: request_info.mail_received=mail_received;
465:
1.245 misha 466: request_info.argv=argv_all;
467: request_info.args_skip=args_skip;
468:
1.218 paf 469: // get request_info ptr for signal handlers
470: ::request_info=&request_info;
471: if(execution_canceled)
472: SAPI::die("Execution canceled");
1.198 paf 473:
1.233 paf 474: #ifdef PA_DEBUG_CGI_ENTRY_EXIT
475: log("request_info: method=%s, uri=%s, q=%s, dr=%s, pt=%s, cookies=%s, cl=%u",
476: request_info.method,
477: request_info.uri,
478: request_info.query_string,
479: request_info.document_root,
480: request_info.path_translated,
481: request_info.cookie,
482: request_info.content_length);
483: #endif
484:
1.122 parser 485: // prepare to process request
1.272 moko 486: Request request(SAPI_info, request_info, cgi ? String::Language(String::L_HTML|String::L_OPTIMIZE_BIT) : String::L_AS_IS);
1.201 paf 487:
1.256 misha 488: {
489: // get ::request ptr for signal handlers
490: RequestController rc(&request);
1.201 paf 491:
1.256 misha 492: char config_filespec_buf[MAX_STRING];
493: if(!config_filespec_cstr) {
494: const char* config_by_env=getenv(PARSER_CONFIG_ENV_NAME);
495: if(!config_by_env)
496: config_by_env=getenv(REDIRECT_PREFIX PARSER_CONFIG_ENV_NAME);
497: if(config_by_env)
498: config_filespec_cstr=config_by_env;
499: else {
500: // beside by binary
501: char beside_binary_path[MAX_STRING];
502: strncpy(beside_binary_path, argv0, MAX_STRING-1); beside_binary_path[MAX_STRING-1]=0; // filespec of my binary
1.272 moko 503: if(!(rsplit(beside_binary_path, '/') || rsplit(beside_binary_path, '\\'))) { // strip filename
1.256 misha 504: // no path, just filename
505: // @todo full path, not ./!
506: beside_binary_path[0]='.'; beside_binary_path[1]=0;
507: }
1.272 moko 508: snprintf(config_filespec_buf, MAX_STRING, "%s/%s", beside_binary_path, AUTO_FILE_NAME);
1.256 misha 509: config_filespec_cstr=config_filespec_buf;
510: fail_on_config_read_problem=entry_exists(config_filespec_cstr);
1.193 paf 511: }
512: }
1.256 misha 513:
514: // process the request
1.272 moko 515: request.core(config_filespec_cstr, fail_on_config_read_problem, header_only);
1.256 misha 516:
517: // ::request cleared in RequestController desctructor to prevent signal handlers from accessing invalid memory
1.122 parser 518: }
1.231 paf 519:
1.280 moko 520: // finalize libraries
1.225 paf 521: pa_globals_done();
1.218 paf 522: }
523:
1.231 paf 524: #ifdef PA_SUPPRESS_SYSTEM_EXCEPTION
1.272 moko 525: static const Exception call_real_parser_handler__do_PEH_return_it(const char* filespec_to_process, const char* request_method, bool header_only){
1.231 paf 526: try {
1.272 moko 527: real_parser_handler(filespec_to_process, request_method, header_only);
1.231 paf 528: } catch(const Exception& e) {
529: return e;
1.122 parser 530: }
1.231 paf 531:
532: return Exception();
1.122 parser 533: }
1.272 moko 534:
535: static void call_real_parser_handler__supress_system_exception(const char* filespec_to_process, const char* request_method, bool header_only){
1.231 paf 536: Exception parser_exception;
537: LPEXCEPTION_POINTERS system_exception=0;
1.122 parser 538:
1.231 paf 539: __try {
1.272 moko 540: parser_exception=call_real_parser_handler__do_PEH_return_it(filespec_to_process, request_method, header_only);
1.231 paf 541: } __except (
542: (system_exception=GetExceptionInformation()),
543: EXCEPTION_EXECUTE_HANDLER)
544: {
1.131 paf 545:
1.231 paf 546: if(system_exception)
547: if(_EXCEPTION_RECORD *er=system_exception->ExceptionRecord)
1.272 moko 548: throw Exception("system", 0, "0x%08X at 0x%08X", er->ExceptionCode, er->ExceptionAddress);
1.218 paf 549: else
1.272 moko 550: throw Exception("system", 0, "<no exception record>");
1.218 paf 551: else
1.272 moko 552: throw Exception("system", 0, "<no exception information>");
1.231 paf 553: }
554:
555: if(parser_exception)
556: throw Exception(parser_exception);
557: }
1.273 moko 558:
559: #define REAL_PARSER_HANDLER call_real_parser_handler__supress_system_exception
560: #else
561: #define REAL_PARSER_HANDLER real_parser_handler
1.218 paf 562: #endif
1.131 paf 563:
1.218 paf 564: static void usage(const char* program) {
1.188 paf 565: printf(
1.235 paf 566: "Parser/%s\n"
1.277 moko 567: "Copyright (c) 2001-2017 Art. Lebedev Studio (http://www.artlebedev.com)\n"
1.184 paf 568: "Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)\n"
569: "\n"
570: "Usage: %s [options] file\n"
571: "Options are:\n"
1.185 paf 572: #ifdef WITH_MAILRECEIVE
1.193 paf 573: " -m Parse mail, put received letter to $mail:received\n"
1.184 paf 574: #endif
1.193 paf 575: " -f config_file Use this config file (/path/to/auto.p)\n"
1.272 moko 576: " -h Display usage information (this message)\n",
577: PARSER_VERSION,
1.184 paf 578: program);
579: exit(EINVAL);
580: }
581:
1.249 misha 582: int main(int argc, char *argv[]) {
1.233 paf 583: #ifdef PA_DEBUG_CGI_ENTRY_EXIT
584: log("main: entry");
585: #endif
1.217 paf 586:
1.203 paf 587: #ifdef SIGUSR1
1.205 paf 588: if(signal(SIGUSR1, SIGUSR1_handler)==SIG_ERR)
1.203 paf 589: SAPI::die("Can not set handler for SIGUSR1");
590: #endif
591: #ifdef SIGPIPE
1.205 paf 592: if(signal(SIGPIPE, SIGPIPE_handler)==SIG_ERR)
1.203 paf 593: SAPI::die("Can not set handler for SIGPIPE");
594: #endif
595:
1.245 misha 596: argv_all=argv;
1.193 paf 597: argv0=argv[0];
1.45 paf 598:
1.32 paf 599: umask(2);
600:
1.3 paf 601: // were we started as CGI?
1.272 moko 602: cgi=(getenv("SERVER_SOFTWARE") || getenv("SERVER_NAME") || getenv("GATEWAY_INTERFACE") || getenv("REQUEST_METHOD")) && !getenv("PARSER_VERSION");
603:
1.184 paf 604: char *raw_filespec_to_process;
1.210 paf 605: if(cgi) {
1.184 paf 606: raw_filespec_to_process=getenv("PATH_TRANSLATED");
1.210 paf 607: if(raw_filespec_to_process && !*raw_filespec_to_process)
608: raw_filespec_to_process=0;
609: } else {
1.250 misha 610: int optind=1;
1.245 misha 611: while(optind < argc){
612: char *carg = argv[optind];
613: if(carg[0] != '-')
1.184 paf 614: break;
1.245 misha 615:
616: for(size_t k = 1; k < strlen(carg); k++){
617: char c = carg[k];
618: switch (c) {
619: case 'h':
620: usage(argv[0]);
621: break;
622: case 'f':
623: if(optind < argc - 1){
624: optind++;
625: config_filespec_cstr=argv[optind];
626: }
627: break;
1.185 paf 628: #ifdef WITH_MAILRECEIVE
1.245 misha 629: case 'm':
630: mail_received=true;
631: break;
632: #endif
633: default:
634: fprintf(stderr, "%s: invalid option '%c'\n", argv[0], c);
635: usage(argv[0]);
636: break;
637: }
1.184 paf 638: }
1.245 misha 639: optind++;
1.184 paf 640: }
1.245 misha 641:
642: if (optind > argc - 1) {
1.184 paf 643: fprintf(stderr, "%s: file not specified\n", argv[0]);
644: usage(argv[0]);
1.10 paf 645: }
1.245 misha 646: raw_filespec_to_process=argv[optind];
647: args_skip=optind;
1.10 paf 648: }
649:
1.264 moko 650: #ifdef _MSC_VER
1.100 parser 651: setmode(fileno(stdin), _O_BINARY);
652: setmode(fileno(stdout), _O_BINARY);
653: setmode(fileno(stderr), _O_BINARY);
654: #endif
655:
1.218 paf 656: #if defined(_MSC_VER) && defined(_DEBUG)
1.148 paf 657: // Get current flag
658: int tmpFlag = _CrtSetDbgFlag( _CRTDBG_REPORT_FLAG );
659:
660: // Turn on leak-checking bit
661: tmpFlag |= _CRTDBG_LEAK_CHECK_DF;
662:
663: // Set flag to the new value
664: _CrtSetDbgFlag( tmpFlag );
1.138 paf 665:
1.218 paf 666: _CrtSetReportMode( _CRT_WARN, _CRTDBG_MODE_FILE );
667: _CrtSetReportFile( _CRT_WARN, _CRTDBG_FILE_STDERR );
1.138 paf 668: #endif
669:
1.166 paf 670: char filespec_to_process[MAX_STRING];
671: full_file_spec(raw_filespec_to_process, filespec_to_process, sizeof(filespec_to_process));
1.10 paf 672:
1.218 paf 673: const char* request_method=getenv("REQUEST_METHOD");
1.35 paf 674: bool header_only=request_method && strcasecmp(request_method, "HEAD")==0;
1.131 paf 675:
1.122 parser 676: try { // global try
1.273 moko 677: REAL_PARSER_HANDLER(filespec_to_process, request_method, header_only);
1.122 parser 678: } catch(const Exception& e) { // global problem
1.44 paf 679: // don't allocate anything on pool here:
680: // possible pool' exception not catch-ed now
681: // and there could be out-of-memory exception
1.218 paf 682: char buf[MAX_STRING];
1.272 moko 683: snprintf(buf, MAX_STRING, "Unhandled exception %s", e.comment());
1.218 paf 684: // log it
685: SAPI::log(SAPI_info, "%s", buf);
686:
687: //
688: int content_length=strlen(buf);
689:
690: // prepare header
1.255 misha 691: // capitalized headers are used for preventing malloc during capitalization
692: SAPI::add_header_attribute(SAPI_info, HTTP_CONTENT_TYPE_CAPITALIZED, "text/plain");
693: // don't use 'format' function because it calls malloc
694: char content_length_cstr[MAX_NUMBER];
695: snprintf(content_length_cstr, MAX_NUMBER, "%u", content_length);
696: SAPI::add_header_attribute(SAPI_info, HTTP_CONTENT_LENGTH_CAPITALIZED, content_length_cstr);
1.218 paf 697:
698: // send header
699: SAPI::send_header(SAPI_info);
700:
701: // send body
702: if(!header_only)
703: SAPI::send_body(SAPI_info, buf, content_length);
1.43 paf 704:
1.218 paf 705: // unsuccessful finish
1.16 paf 706: }
1.109 parser 707:
1.233 paf 708: #ifdef PA_DEBUG_CGI_ENTRY_EXIT
709: log("main: successful return");
710: #endif
1.274 moko 711: return SAPI_info.http_response_code < 100 ? SAPI_info.http_response_code : 0;
1.1 paf 712: }
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