Annotation of parser3/src/targets/cgi/parser3.C, revision 1.288
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:
1.288 ! moko 8: volatile const char * IDENT_PARSER3_C="$Id: parser3.C,v 1.287 2020/08/12 17:30:40 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
1.288 ! moko 28: //#define PA_DEBUG_CGI_ENTRY_EXIT "parser3-debug.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* config_filespec_cstr=0;
1.192 paf 44:
1.245 misha 45: static int args_skip=1;
46: static char** argv_all = NULL;
47:
1.184 paf 48: static bool cgi; ///< we were started as CGI?
49: static bool mail_received=false; ///< we were started with -m option? [asked to parse incoming message to $mail:received]
1.5 paf 50:
1.201 paf 51: // for signal handlers
52: Request *request=0;
1.218 paf 53: Request_info *request_info=0;
54: bool execution_canceled=false;
1.201 paf 55:
1.46 paf 56: // SAPI
1.86 parser 57:
1.275 moko 58: class SAPI_Info {
59: public:
1.274 moko 60: int http_response_code;
61: } SAPI_info = { 0 };
1.218 paf 62:
63: static void log(const char* fmt, va_list args) {
1.193 paf 64: bool opened=false;
1.61 paf 65: FILE *f=0;
66:
1.226 paf 67: const char* log_by_env=getenv(PARSER_LOG_ENV_NAME);
68: if(!log_by_env)
69: log_by_env=getenv(REDIRECT_PREFIX PARSER_LOG_ENV_NAME);
70: if(log_by_env) {
71: f=fopen(log_by_env, "at");
72: opened=f!=0;
73: }
1.272 moko 74: #ifdef PA_DEBUG_CGI_ENTRY_EXIT
1.233 paf 75: f=fopen(PA_DEBUG_CGI_ENTRY_EXIT, "at");
76: opened=f!=0;
77: #endif
1.226 paf 78:
79: if(!opened && config_filespec_cstr) {
1.193 paf 80: char beside_config_path[MAX_STRING];
81: strncpy(beside_config_path, config_filespec_cstr, MAX_STRING-1); beside_config_path[MAX_STRING-1]=0;
1.272 moko 82: if(!(rsplit(beside_config_path, '/') || rsplit(beside_config_path, '\\'))) { // strip filename
1.193 paf 83: // no path, just filename
84: beside_config_path[0]='.'; beside_config_path[1]=0;
85: }
86:
87: char file_spec[MAX_STRING];
1.272 moko 88: snprintf(file_spec, MAX_STRING, "%s/parser3.log", beside_config_path);
1.193 paf 89: f=fopen(file_spec, "at");
90: opened=f!=0;
91: }
1.192 paf 92: // fallback to stderr
1.61 paf 93: if(!opened)
94: f=stderr;
1.208 paf 95:
96: // use no memory [so that we could log out-of-memory error]
97: setbuf(f, 0); // stderr stream is unbuffered by default, but still...
1.61 paf 98:
99: // prefix
100: time_t t=time(0);
1.218 paf 101: if(const char* stamp=ctime(&t)) { // never saw that
1.173 paf 102: if(size_t len=strlen(stamp)) // saw once stamp being =""
1.272 moko 103: fprintf(f, "[%.*s] [%u] ", (int)len-1, stamp, (unsigned int)getpid() );
1.171 paf 104: }
1.61 paf 105: // message
1.117 parser 106:
1.246 misha 107: char buf[MAX_LOG_STRING];
108: size_t size=vsnprintf(buf, MAX_LOG_STRING, fmt, args);
109: size=remove_crlf(buf, buf+size);
1.239 paf 110: fwrite(buf, size, 1, f);
111:
112: if(request_info)
1.261 moko 113: fprintf(f, " [uri=%s, method=%s, cl=%lu]",
1.287 moko 114: request_info->uri ? request_info->uri : "<unknown>",
115: request_info->method ? request_info->method : "<unknown>",
1.239 paf 116: request_info->content_length);
117: else
118: fputs(" [no request info]", f);
1.117 parser 119:
1.61 paf 120: // newline
1.239 paf 121: fputs("\n", f);
1.61 paf 122:
123: if(opened)
124: fclose(f);
1.85 parser 125: else
126: fflush(f);
1.124 parser 127: }
1.272 moko 128:
1.236 paf 129: #ifdef PA_DEBUG_CGI_ENTRY_EXIT
1.233 paf 130: static void log(const char* fmt, ...) {
1.272 moko 131: va_list args;
1.233 paf 132: va_start(args,fmt);
133: log(fmt, args);
134: va_end(args);
135: }
1.236 paf 136: #endif
1.124 parser 137:
138: // appends to parser3.log located beside my binary if openable, to stderr otherwize
1.218 paf 139: void SAPI::log(SAPI_Info&, const char* fmt, ...) {
1.272 moko 140: va_list args;
1.124 parser 141: va_start(args,fmt);
142: ::log(fmt, args);
143: va_end(args);
144: }
145:
1.218 paf 146: static void die_or_abort(const char* fmt, va_list args, bool write_core) {
1.138 paf 147: // inform user
148:
1.134 paf 149: char body[MAX_STRING];
1.138 paf 150: int content_length=vsnprintf(body, MAX_STRING, fmt, args);
1.134 paf 151:
152: // prepare header
153: // let's be honest, that's bad we couldn't produce valid output
1.255 misha 154: // capitalized headers passed for preventing malloc during capitalization
155: SAPI::add_header_attribute(SAPI_info, HTTP_STATUS_CAPITALIZED, "500");
156: SAPI::add_header_attribute(SAPI_info, HTTP_CONTENT_TYPE_CAPITALIZED, "text/plain");
157: // don't use 'format' function because it calls malloc
158: char content_length_cstr[MAX_NUMBER];
159: snprintf(content_length_cstr, sizeof(content_length_cstr), "%u", content_length);
160: SAPI::add_header_attribute(SAPI_info, HTTP_CONTENT_LENGTH_CAPITALIZED, content_length_cstr);
1.134 paf 161:
162: // send header
1.218 paf 163: SAPI::send_header(SAPI_info);
1.134 paf 164:
165: // body
1.218 paf 166: SAPI::send_body(SAPI_info, body, content_length);
1.134 paf 167:
1.218 paf 168: // exit & try to produce core dump[unix] or invoke debugger[Win32 Debug version]
169: if(write_core) {
1.264 moko 170: #ifdef WIN32
1.218 paf 171: // IIS with abort failes to show STDOUT, it just barks "abnormal program termination"
172: exit(1);
1.214 paf 173: #else
1.218 paf 174: abort();
1.214 paf 175: #endif
1.272 moko 176: } else
1.218 paf 177: exit(1);
178: }
179:
180: void SAPI::die(const char* fmt, ...) {
1.258 moko 181: va_list args;
182:
183: // logging first, can't log inside die_or_abort due to vsnprintf (bug #106)
184: va_start(args,fmt);
185: ::log(fmt, args);
186: va_end(args);
187:
1.218 paf 188: va_start(args, fmt);
1.258 moko 189: die_or_abort(fmt, args, false /*write core?*/);
190: // va_end(args);
1.61 paf 191: }
192:
1.218 paf 193: void SAPI::abort(const char* fmt, ...) {
1.258 moko 194: va_list args;
195:
196: // logging first, can't log inside die_or_abort due to vsnprintf (bug #106)
197: va_start(args,fmt);
198: ::log(fmt, args);
199: va_end(args);
200:
1.218 paf 201: va_start(args, fmt);
1.258 moko 202: die_or_abort(fmt, args, true /*write core?*/);
203: // va_end(args);
1.28 paf 204: }
205:
1.267 moko 206: char* SAPI::Env::get(SAPI_Info& , const char* name) {
1.218 paf 207: if(char *local=getenv(name))
208: return pa_strdup(local);
209: else
210: return 0;
211: }
212:
1.267 moko 213: const char* const *SAPI::Env::get(SAPI_Info&) {
1.180 paf 214: #ifdef _MSC_VER
215: extern char **_environ;
216: return _environ;
217: #else
218: extern char **environ;
219: return environ;
220: #endif
221: }
222:
1.218 paf 223: size_t SAPI::read_post(SAPI_Info& , char *buf, size_t max_bytes) {
1.59 paf 224: size_t read_size=0;
1.12 paf 225: do {
1.272 moko 226: ssize_t chunk_size=read(fileno(stdin), buf+read_size, min(READ_POST_CHUNK_SIZE, max_bytes-read_size));
1.129 paf 227: if(chunk_size<=0)
1.12 paf 228: break;
229: read_size+=chunk_size;
230: } while(read_size<max_bytes);
231:
232: return read_size;
1.10 paf 233: }
234:
1.218 paf 235: void SAPI::add_header_attribute(SAPI_Info& , const char* dont_store_key, const char* dont_store_value) {
1.274 moko 236: if(strcasecmp(dont_store_key, HTTP_STATUS)==0)
237: SAPI_info.http_response_code=atoi(dont_store_value);
1.242 misha 238: if( cgi && (!request || !request->console.was_used()) )
1.254 misha 239: printf("%s: %s\n", capitalize(dont_store_key), dont_store_value);
1.19 paf 240: }
241:
1.218 paf 242: void SAPI::send_header(SAPI_Info& ) {
1.33 paf 243: if(cgi) {
1.20 paf 244: puts("");
1.33 paf 245: }
1.30 paf 246: }
1.20 paf 247:
1.229 paf 248: size_t SAPI::send_body(SAPI_Info& , const void *buf, size_t size) {
249: return stdout_write(buf, size);
1.58 paf 250: }
251:
1.218 paf 252: static void full_file_spec(const char* file_name, char *buf, size_t buf_size) {
1.210 paf 253: if(file_name)
1.167 paf 254: if(file_name[0]=='/'
255: #ifdef WIN32
1.210 paf 256: || file_name[0] && file_name[1]==':'
1.167 paf 257: #endif
1.279 moko 258: ){
259: strncpy(buf, file_name, buf_size-1); buf[buf_size-1]=0;
260: } else {
1.261 moko 261: char cwd[MAX_STRING];
262: snprintf(buf, buf_size, "%s/%s", getcwd(cwd, MAX_STRING) ? cwd : "", file_name);
1.167 paf 263: }
264: else
265: buf[0]=0;
1.166 paf 266: #ifdef WIN32
267: back_slashes_to_slashes(buf);
268: #endif
1.97 parser 269: }
270:
1.218 paf 271: static void log_signal(const char* signal_name) {
272: if(request_info)
1.287 moko 273: SAPI::log(SAPI_info, "%s received while %s.", signal_name, request ? "executing code" : "reading data");
1.218 paf 274: else
1.287 moko 275: SAPI::log(SAPI_info, "%s received before or after processing request", signal_name);
1.205 paf 276: }
277:
1.201 paf 278: #ifdef SIGUSR1
1.205 paf 279: static void SIGUSR1_handler(int /*sig*/){
280: log_signal("SIGUSR1");
1.201 paf 281: }
282: #endif
283:
284: #ifdef SIGPIPE
1.243 misha 285: #define SIGPIPE_NAME "SIGPIPE"
286: static const String sigpipe_name(SIGPIPE_NAME);
1.205 paf 287: static void SIGPIPE_handler(int /*sig*/){
1.243 misha 288: Value* sigpipe=0;
289: if(request)
1.251 misha 290: sigpipe=request->main_class.get_element(sigpipe_name);
1.243 misha 291: if(sigpipe && sigpipe->as_bool())
1.244 misha 292: log_signal(SIGPIPE_NAME);
1.243 misha 293:
1.218 paf 294: execution_canceled=true;
1.201 paf 295: if(request)
1.276 moko 296: request->set_skip(Request::SKIP_INTERRUPTED);
1.201 paf 297: }
298: #endif
299:
1.227 paf 300: #ifdef WIN32
301: const char* maybe_reconstruct_IIS_status_in_qs(const char* original)
302: {
1.228 paf 303: // 404;http://servername/page[?param=value...]
1.227 paf 304: // ';' should be urlencoded by HTTP standard, so we shouldn't get it from browser
305: // and can consider that as an indication that this is IIS way to report errors
306:
1.272 moko 307: if(original && isdigit((unsigned char)original[0]) && isdigit((unsigned char)original[1]) && isdigit((unsigned char)original[2]) && original[3]==';'){
1.227 paf 308: size_t original_len=strlen(original);
1.272 moko 309: char* reconstructed=new(PointerFreeGC) char[original_len +12/*IIS-STATUS=&*/ +14/*IIS-DOCUMENT=&*/ +1];
1.227 paf 310: char* cur=reconstructed;
311: memcpy(cur, "IIS-STATUS=", 11); cur+=11;
312: memcpy(cur, original, 3); cur+=3;
313: *cur++='&';
314:
1.228 paf 315: const char* qmark_at=strchr(original, '?');
1.227 paf 316: memcpy(cur, "IIS-DOCUMENT=", 13); cur+=13;
317: {
1.272 moko 318: size_t value_len=(qmark_at ? qmark_at-original : original_len)-4;
1.227 paf 319: memcpy(cur, original+4, value_len); cur+=value_len;
320: }
321:
322: if(qmark_at) {
323: *cur++='&';
324: strcpy(cur, qmark_at+1/*skip ? itself*/);
325: } else
326: *cur=0;
327:
328: return reconstructed;
329: }
330:
331: return original;
332: }
1.283 moko 333:
334: #define MAYBE_RECONSTRUCT_IIS_STATUS_IN_QS(s) maybe_reconstruct_IIS_status_in_qs(s)
335: #else
336: #define MAYBE_RECONSTRUCT_IIS_STATUS_IN_QS(s) s
1.227 paf 337: #endif
338:
1.256 misha 339:
340: class RequestController {
341: public:
342: RequestController(Request* r){
343: ::request=r;
344: }
345: ~RequestController(){
346: ::request=0;
347: }
348: };
349:
1.288 ! moko 350: static bool locate_config(){
! 351: if(!config_filespec_cstr) {
! 352: config_filespec_cstr=getenv(PARSER_CONFIG_ENV_NAME);
! 353: if(!config_filespec_cstr)
! 354: config_filespec_cstr=getenv(REDIRECT_PREFIX PARSER_CONFIG_ENV_NAME);
! 355: if(!config_filespec_cstr){
! 356: // beside by binary
! 357: char beside_binary_path[MAX_STRING];
! 358: strncpy(beside_binary_path, argv_all[0], MAX_STRING-1); beside_binary_path[MAX_STRING-1]=0; // filespec of my binary
! 359: if(!(rsplit(beside_binary_path, '/') || rsplit(beside_binary_path, '\\'))) { // strip filename
! 360: // no path, just filename
! 361: // @todo full path, not ./!
! 362: beside_binary_path[0]='.'; beside_binary_path[1]=0;
! 363: }
! 364: char config_filespec_buf[MAX_STRING];
! 365: snprintf(config_filespec_buf, MAX_STRING, "%s/%s", beside_binary_path, AUTO_FILE_NAME);
! 366: config_filespec_cstr=pa_strdup(config_filespec_buf);
! 367: return entry_exists(config_filespec_cstr);
! 368: }
! 369: }
! 370: return true;
! 371: }
1.256 misha 372:
1.40 paf 373: /**
1.122 parser 374: main workhorse
1.19 paf 375:
1.272 moko 376: @todo
377: IIS: remove trailing default-document[index.html] from $request.uri.
378: to do that we need to consult metabase,
379: wich is tested but seems slow.
1.40 paf 380: */
1.272 moko 381: static void real_parser_handler(const char* filespec_to_process, const char* request_method, bool header_only) {
1.231 paf 382:
1.280 moko 383: // init libraries
1.218 paf 384: pa_globals_init();
1.122 parser 385:
1.186 paf 386: if(!filespec_to_process || !*filespec_to_process)
1.282 moko 387: SAPI::die("Parser/%s", PARSER_VERSION);
1.122 parser 388:
389: // Request info
1.285 moko 390: Request_info request_info; memset(&request_info, 0, sizeof(request_info));
1.166 paf 391: char document_root_buf[MAX_STRING];
1.283 moko 392:
393: request_info.path_translated = filespec_to_process;
394: request_info.method = request_method ? request_method : "GET";
395: request_info.query_string = MAYBE_RECONSTRUCT_IIS_STATUS_IN_QS(getenv("QUERY_STRING"));
396:
1.122 parser 397: if(cgi) {
1.284 moko 398: // obligatory
1.218 paf 399: const char* path_info=getenv("PATH_INFO");
1.214 paf 400: if(!path_info)
401: SAPI::die("CGI: illegal call (missing PATH_INFO)");
1.283 moko 402:
403: request_info.document_root = getenv("DOCUMENT_ROOT");
404: if(!request_info.document_root) {
1.285 moko 405: // IIS or fcgiwrap minimalistic setup
406: ssize_t prefix_len = strlen(filespec_to_process) - strlen(path_info);
407: if(prefix_len < 0 || strcmp(filespec_to_process + prefix_len, path_info) != 0)
408: SAPI::die("CGI: illegal call (invalid PATH_INFO in reinventing DOCUMENT_ROOT)");
409:
410: char* document_root = new(PointerFreeGC) char[prefix_len + 1/*0*/];
411: memcpy(document_root, filespec_to_process, prefix_len); document_root[prefix_len] = 0;
412: request_info.document_root = document_root;
1.283 moko 413: }
1.214 paf 414:
1.285 moko 415: request_info.uri = request_info.strip_absolute_uri(getenv("REQUEST_URI"));
1.283 moko 416: if(request_info.uri) { // apache & others stuck to standards
1.284 moko 417: // another obligatory
1.285 moko 418: const char* script_name = getenv("SCRIPT_NAME");
1.284 moko 419: if(!script_name)
420: SAPI::die("CGI: illegal call (missing SCRIPT_NAME)");
1.214 paf 421: /*
422: http://parser3/env.html?123 =OK
423: $request:uri=/env.html?123
424: REQUEST_URI='/env.html?123'
425: SCRIPT_NAME='/cgi-bin/parser3'
426: PATH_INFO='/env.html'
1.285 moko 427:
1.214 paf 428: http://parser3/cgi-bin/parser3/env.html?123 =ERROR
429: $request:uri=/cgi-bin/parser3/env.html?123
430: REQUEST_URI='/cgi-bin/parser3/env.html?123'
431: SCRIPT_NAME='/cgi-bin/parser3'
432: PATH_INFO='/env.html'
433: */
1.285 moko 434: size_t script_name_len = strlen(script_name);
435: size_t uri_len = strlen(request_info.uri);
1.283 moko 436: if(strncmp(request_info.uri, script_name, script_name_len)==0 && script_name_len != uri_len) // under IIS they are the same
1.214 paf 437: SAPI::die("CGI: illegal call (1)");
1.284 moko 438: } else { // fcgiwrap minimalistic setup
1.283 moko 439:
1.286 moko 440: if(request_info.query_string && *request_info.query_string) {
1.285 moko 441: char* reconstructed_uri = new(PointerFreeGC) char[strlen(path_info) + 1/*'?'*/+ strlen(request_info.query_string) + 1/*0*/];
1.283 moko 442: strcpy(reconstructed_uri, path_info);
443: strcat(reconstructed_uri, "?");
444: strcat(reconstructed_uri, request_info.query_string);
1.285 moko 445: request_info.uri = reconstructed_uri;
1.283 moko 446: } else
1.285 moko 447: request_info.uri = path_info;
1.214 paf 448: }
1.283 moko 449: } else{
450: full_file_spec("", document_root_buf, sizeof(document_root_buf));
1.285 moko 451: request_info.document_root = document_root_buf;
452: request_info.uri = "";
1.283 moko 453: }
1.122 parser 454:
1.283 moko 455: request_info.content_type = getenv("CONTENT_TYPE");
456: const char* content_length = getenv("CONTENT_LENGTH");
457: request_info.content_length = content_length ? atoi(content_length) : 0;
458: request_info.cookie = getenv("HTTP_COOKIE");
459: request_info.mail_received = mail_received;
1.184 paf 460:
1.283 moko 461: request_info.argv = argv_all;
462: request_info.args_skip = args_skip;
1.245 misha 463:
1.218 paf 464: // get request_info ptr for signal handlers
1.283 moko 465: ::request_info = &request_info;
1.218 paf 466: if(execution_canceled)
467: SAPI::die("Execution canceled");
1.198 paf 468:
1.233 paf 469: #ifdef PA_DEBUG_CGI_ENTRY_EXIT
470: log("request_info: method=%s, uri=%s, q=%s, dr=%s, pt=%s, cookies=%s, cl=%u",
471: request_info.method,
472: request_info.uri,
473: request_info.query_string,
474: request_info.document_root,
475: request_info.path_translated,
476: request_info.cookie,
477: request_info.content_length);
478: #endif
479:
1.122 parser 480: // prepare to process request
1.272 moko 481: Request request(SAPI_info, request_info, cgi ? String::Language(String::L_HTML|String::L_OPTIMIZE_BIT) : String::L_AS_IS);
1.256 misha 482: {
483: // get ::request ptr for signal handlers
484: RequestController rc(&request);
1.288 ! moko 485: bool fail_on_config_read_problem=locate_config();
1.256 misha 486: // process the request
1.272 moko 487: request.core(config_filespec_cstr, fail_on_config_read_problem, header_only);
1.256 misha 488: // ::request cleared in RequestController desctructor to prevent signal handlers from accessing invalid memory
1.122 parser 489: }
1.231 paf 490:
1.280 moko 491: // finalize libraries
1.225 paf 492: pa_globals_done();
1.218 paf 493: }
494:
1.231 paf 495: #ifdef PA_SUPPRESS_SYSTEM_EXCEPTION
1.272 moko 496: 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 497: try {
1.272 moko 498: real_parser_handler(filespec_to_process, request_method, header_only);
1.231 paf 499: } catch(const Exception& e) {
500: return e;
1.122 parser 501: }
1.231 paf 502:
503: return Exception();
1.122 parser 504: }
1.272 moko 505:
506: static void call_real_parser_handler__supress_system_exception(const char* filespec_to_process, const char* request_method, bool header_only){
1.231 paf 507: Exception parser_exception;
508: LPEXCEPTION_POINTERS system_exception=0;
1.122 parser 509:
1.231 paf 510: __try {
1.272 moko 511: parser_exception=call_real_parser_handler__do_PEH_return_it(filespec_to_process, request_method, header_only);
1.288 ! moko 512: } __except ( (system_exception=GetExceptionInformation()), EXCEPTION_EXECUTE_HANDLER) {
1.131 paf 513:
1.231 paf 514: if(system_exception)
515: if(_EXCEPTION_RECORD *er=system_exception->ExceptionRecord)
1.272 moko 516: throw Exception("system", 0, "0x%08X at 0x%08X", er->ExceptionCode, er->ExceptionAddress);
1.218 paf 517: else
1.272 moko 518: throw Exception("system", 0, "<no exception record>");
1.218 paf 519: else
1.272 moko 520: throw Exception("system", 0, "<no exception information>");
1.231 paf 521: }
522:
523: if(parser_exception)
524: throw Exception(parser_exception);
525: }
1.273 moko 526:
527: #define REAL_PARSER_HANDLER call_real_parser_handler__supress_system_exception
528: #else
529: #define REAL_PARSER_HANDLER real_parser_handler
1.218 paf 530: #endif
1.131 paf 531:
1.218 paf 532: static void usage(const char* program) {
1.188 paf 533: printf(
1.235 paf 534: "Parser/%s\n"
1.277 moko 535: "Copyright (c) 2001-2017 Art. Lebedev Studio (http://www.artlebedev.com)\n"
1.184 paf 536: "Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)\n"
537: "\n"
538: "Usage: %s [options] file\n"
539: "Options are:\n"
1.185 paf 540: #ifdef WITH_MAILRECEIVE
1.193 paf 541: " -m Parse mail, put received letter to $mail:received\n"
1.184 paf 542: #endif
1.193 paf 543: " -f config_file Use this config file (/path/to/auto.p)\n"
1.272 moko 544: " -h Display usage information (this message)\n",
545: PARSER_VERSION,
1.184 paf 546: program);
547: exit(EINVAL);
548: }
549:
1.249 misha 550: int main(int argc, char *argv[]) {
1.233 paf 551: #ifdef PA_DEBUG_CGI_ENTRY_EXIT
552: log("main: entry");
553: #endif
1.217 paf 554:
1.203 paf 555: #ifdef SIGUSR1
1.205 paf 556: if(signal(SIGUSR1, SIGUSR1_handler)==SIG_ERR)
1.203 paf 557: SAPI::die("Can not set handler for SIGUSR1");
558: #endif
559: #ifdef SIGPIPE
1.205 paf 560: if(signal(SIGPIPE, SIGPIPE_handler)==SIG_ERR)
1.203 paf 561: SAPI::die("Can not set handler for SIGPIPE");
562: #endif
563:
1.245 misha 564: argv_all=argv;
1.32 paf 565: umask(2);
566:
1.3 paf 567: // were we started as CGI?
1.272 moko 568: cgi=(getenv("SERVER_SOFTWARE") || getenv("SERVER_NAME") || getenv("GATEWAY_INTERFACE") || getenv("REQUEST_METHOD")) && !getenv("PARSER_VERSION");
569:
1.184 paf 570: char *raw_filespec_to_process;
1.210 paf 571: if(cgi) {
1.184 paf 572: raw_filespec_to_process=getenv("PATH_TRANSLATED");
1.210 paf 573: if(raw_filespec_to_process && !*raw_filespec_to_process)
574: raw_filespec_to_process=0;
575: } else {
1.250 misha 576: int optind=1;
1.245 misha 577: while(optind < argc){
578: char *carg = argv[optind];
579: if(carg[0] != '-')
1.184 paf 580: break;
1.245 misha 581:
582: for(size_t k = 1; k < strlen(carg); k++){
583: char c = carg[k];
584: switch (c) {
585: case 'h':
586: usage(argv[0]);
587: break;
588: case 'f':
589: if(optind < argc - 1){
590: optind++;
591: config_filespec_cstr=argv[optind];
592: }
593: break;
1.185 paf 594: #ifdef WITH_MAILRECEIVE
1.245 misha 595: case 'm':
596: mail_received=true;
597: break;
598: #endif
599: default:
600: fprintf(stderr, "%s: invalid option '%c'\n", argv[0], c);
601: usage(argv[0]);
602: break;
603: }
1.184 paf 604: }
1.245 misha 605: optind++;
1.184 paf 606: }
1.245 misha 607:
608: if (optind > argc - 1) {
1.184 paf 609: fprintf(stderr, "%s: file not specified\n", argv[0]);
610: usage(argv[0]);
1.10 paf 611: }
1.245 misha 612: raw_filespec_to_process=argv[optind];
613: args_skip=optind;
1.10 paf 614: }
615:
1.264 moko 616: #ifdef _MSC_VER
1.100 parser 617: setmode(fileno(stdin), _O_BINARY);
618: setmode(fileno(stdout), _O_BINARY);
619: setmode(fileno(stderr), _O_BINARY);
620: #endif
621:
1.218 paf 622: #if defined(_MSC_VER) && defined(_DEBUG)
1.148 paf 623: // Get current flag
624: int tmpFlag = _CrtSetDbgFlag( _CRTDBG_REPORT_FLAG );
625:
626: // Turn on leak-checking bit
627: tmpFlag |= _CRTDBG_LEAK_CHECK_DF;
628:
629: // Set flag to the new value
630: _CrtSetDbgFlag( tmpFlag );
1.138 paf 631:
1.218 paf 632: _CrtSetReportMode( _CRT_WARN, _CRTDBG_MODE_FILE );
633: _CrtSetReportFile( _CRT_WARN, _CRTDBG_FILE_STDERR );
1.138 paf 634: #endif
635:
1.166 paf 636: char filespec_to_process[MAX_STRING];
637: full_file_spec(raw_filespec_to_process, filespec_to_process, sizeof(filespec_to_process));
1.10 paf 638:
1.218 paf 639: const char* request_method=getenv("REQUEST_METHOD");
1.35 paf 640: bool header_only=request_method && strcasecmp(request_method, "HEAD")==0;
1.131 paf 641:
1.122 parser 642: try { // global try
1.273 moko 643: REAL_PARSER_HANDLER(filespec_to_process, request_method, header_only);
1.122 parser 644: } catch(const Exception& e) { // global problem
1.44 paf 645: // don't allocate anything on pool here:
646: // possible pool' exception not catch-ed now
647: // and there could be out-of-memory exception
1.218 paf 648: char buf[MAX_STRING];
1.272 moko 649: snprintf(buf, MAX_STRING, "Unhandled exception %s", e.comment());
1.218 paf 650: // log it
651: SAPI::log(SAPI_info, "%s", buf);
652:
653: //
654: int content_length=strlen(buf);
655:
656: // prepare header
1.255 misha 657: // capitalized headers are used for preventing malloc during capitalization
658: SAPI::add_header_attribute(SAPI_info, HTTP_CONTENT_TYPE_CAPITALIZED, "text/plain");
659: // don't use 'format' function because it calls malloc
660: char content_length_cstr[MAX_NUMBER];
661: snprintf(content_length_cstr, MAX_NUMBER, "%u", content_length);
662: SAPI::add_header_attribute(SAPI_info, HTTP_CONTENT_LENGTH_CAPITALIZED, content_length_cstr);
1.218 paf 663:
664: // send header
665: SAPI::send_header(SAPI_info);
666:
667: // send body
668: if(!header_only)
669: SAPI::send_body(SAPI_info, buf, content_length);
1.43 paf 670:
1.218 paf 671: // unsuccessful finish
1.16 paf 672: }
1.109 parser 673:
1.233 paf 674: #ifdef PA_DEBUG_CGI_ENTRY_EXIT
675: log("main: successful return");
676: #endif
1.274 moko 677: return SAPI_info.http_response_code < 100 ? SAPI_info.http_response_code : 0;
1.1 paf 678: }
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