Annotation of parser3/src/targets/cgi/parser3.C, revision 1.284
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:
1.284 ! moko 8: volatile const char * IDENT_PARSER3_C="$Id: parser3.C,v 1.283 2019/12/27 14:37:17 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
1.282 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* 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: }
1.283 moko 341:
342: #define MAYBE_RECONSTRUCT_IIS_STATUS_IN_QS(s) maybe_reconstruct_IIS_status_in_qs(s)
343: #else
344: #define MAYBE_RECONSTRUCT_IIS_STATUS_IN_QS(s) s
1.227 paf 345: #endif
346:
1.256 misha 347:
348: class RequestController {
349: public:
350: RequestController(Request* r){
351: ::request=r;
352: }
353: ~RequestController(){
354: ::request=0;
355: }
356: };
357:
358:
1.40 paf 359: /**
1.122 parser 360: main workhorse
1.19 paf 361:
1.272 moko 362: @todo
363: IIS: remove trailing default-document[index.html] from $request.uri.
364: to do that we need to consult metabase,
365: wich is tested but seems slow.
1.40 paf 366: */
1.272 moko 367: static void real_parser_handler(const char* filespec_to_process, const char* request_method, bool header_only) {
1.231 paf 368:
1.280 moko 369: // init libraries
1.218 paf 370: pa_globals_init();
1.122 parser 371:
1.186 paf 372: if(!filespec_to_process || !*filespec_to_process)
1.282 moko 373: SAPI::die("Parser/%s", 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];
1.283 moko 378:
379: request_info.path_translated = filespec_to_process;
380: request_info.method = request_method ? request_method : "GET";
381: request_info.query_string = MAYBE_RECONSTRUCT_IIS_STATUS_IN_QS(getenv("QUERY_STRING"));
382:
1.122 parser 383: if(cgi) {
1.284 ! moko 384: // obligatory
1.218 paf 385: const char* path_info=getenv("PATH_INFO");
1.214 paf 386: if(!path_info)
387: SAPI::die("CGI: illegal call (missing PATH_INFO)");
1.283 moko 388:
389: request_info.document_root = getenv("DOCUMENT_ROOT");
390: if(!request_info.document_root) {
391: // IIS
392: size_t len=min(sizeof(document_root_buf)-1, strlen(filespec_to_process)-strlen(path_info));
393: memcpy(document_root_buf, filespec_to_process, len); document_root_buf[len]=0;
394: request_info.document_root=document_root_buf;
395: }
1.214 paf 396:
1.283 moko 397: request_info.uri=request_info.strip_absolute_uri(getenv("REQUEST_URI"));
398: if(request_info.uri) { // apache & others stuck to standards
1.284 ! moko 399: // another obligatory
! 400: const char* script_name=getenv("SCRIPT_NAME");
! 401: if(!script_name)
! 402: SAPI::die("CGI: illegal call (missing SCRIPT_NAME)");
1.214 paf 403: /*
404: http://parser3/env.html?123 =OK
405: $request:uri=/env.html?123
406: REQUEST_URI='/env.html?123'
407: SCRIPT_NAME='/cgi-bin/parser3'
408: PATH_INFO='/env.html'
409:
410: http://parser3/cgi-bin/parser3/env.html?123 =ERROR
411: $request:uri=/cgi-bin/parser3/env.html?123
412: REQUEST_URI='/cgi-bin/parser3/env.html?123'
413: SCRIPT_NAME='/cgi-bin/parser3'
414: PATH_INFO='/env.html'
415: */
416: size_t script_name_len=strlen(script_name);
1.283 moko 417: size_t uri_len=strlen(request_info.uri);
418: 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 419: SAPI::die("CGI: illegal call (1)");
1.284 ! moko 420: } else { // fcgiwrap minimalistic setup
1.283 moko 421:
422: if(request_info.query_string) {
423: char* reconstructed_uri=new(PointerFreeGC) char[strlen(path_info) + 1/*'?'*/+ strlen(request_info.query_string) + 1/*0*/];
424: strcpy(reconstructed_uri, path_info);
425: strcat(reconstructed_uri, "?");
426: strcat(reconstructed_uri, request_info.query_string);
427: request_info.uri=reconstructed_uri;
428: } else
429: request_info.uri=path_info;
1.214 paf 430: }
1.283 moko 431: } else{
432: full_file_spec("", document_root_buf, sizeof(document_root_buf));
433: request_info.document_root=document_root_buf;
1.177 paf 434: request_info.uri="";
1.283 moko 435: }
1.122 parser 436:
1.283 moko 437: request_info.content_type = getenv("CONTENT_TYPE");
438: const char* content_length = getenv("CONTENT_LENGTH");
439: request_info.content_length = content_length ? atoi(content_length) : 0;
440: request_info.cookie = getenv("HTTP_COOKIE");
441: request_info.mail_received = mail_received;
1.184 paf 442:
1.283 moko 443: request_info.argv = argv_all;
444: request_info.args_skip = args_skip;
1.245 misha 445:
1.218 paf 446: // get request_info ptr for signal handlers
1.283 moko 447: ::request_info = &request_info;
1.218 paf 448: if(execution_canceled)
449: SAPI::die("Execution canceled");
1.198 paf 450:
1.233 paf 451: #ifdef PA_DEBUG_CGI_ENTRY_EXIT
452: log("request_info: method=%s, uri=%s, q=%s, dr=%s, pt=%s, cookies=%s, cl=%u",
453: request_info.method,
454: request_info.uri,
455: request_info.query_string,
456: request_info.document_root,
457: request_info.path_translated,
458: request_info.cookie,
459: request_info.content_length);
460: #endif
461:
1.122 parser 462: // prepare to process request
1.272 moko 463: Request request(SAPI_info, request_info, cgi ? String::Language(String::L_HTML|String::L_OPTIMIZE_BIT) : String::L_AS_IS);
1.201 paf 464:
1.256 misha 465: {
466: // get ::request ptr for signal handlers
467: RequestController rc(&request);
1.201 paf 468:
1.256 misha 469: char config_filespec_buf[MAX_STRING];
470: if(!config_filespec_cstr) {
471: const char* config_by_env=getenv(PARSER_CONFIG_ENV_NAME);
472: if(!config_by_env)
473: config_by_env=getenv(REDIRECT_PREFIX PARSER_CONFIG_ENV_NAME);
474: if(config_by_env)
475: config_filespec_cstr=config_by_env;
476: else {
477: // beside by binary
478: char beside_binary_path[MAX_STRING];
479: strncpy(beside_binary_path, argv0, MAX_STRING-1); beside_binary_path[MAX_STRING-1]=0; // filespec of my binary
1.272 moko 480: if(!(rsplit(beside_binary_path, '/') || rsplit(beside_binary_path, '\\'))) { // strip filename
1.256 misha 481: // no path, just filename
482: // @todo full path, not ./!
483: beside_binary_path[0]='.'; beside_binary_path[1]=0;
484: }
1.272 moko 485: snprintf(config_filespec_buf, MAX_STRING, "%s/%s", beside_binary_path, AUTO_FILE_NAME);
1.256 misha 486: config_filespec_cstr=config_filespec_buf;
487: fail_on_config_read_problem=entry_exists(config_filespec_cstr);
1.193 paf 488: }
489: }
1.256 misha 490:
491: // process the request
1.272 moko 492: request.core(config_filespec_cstr, fail_on_config_read_problem, header_only);
1.256 misha 493:
494: // ::request cleared in RequestController desctructor to prevent signal handlers from accessing invalid memory
1.122 parser 495: }
1.231 paf 496:
1.280 moko 497: // finalize libraries
1.225 paf 498: pa_globals_done();
1.218 paf 499: }
500:
1.231 paf 501: #ifdef PA_SUPPRESS_SYSTEM_EXCEPTION
1.272 moko 502: 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 503: try {
1.272 moko 504: real_parser_handler(filespec_to_process, request_method, header_only);
1.231 paf 505: } catch(const Exception& e) {
506: return e;
1.122 parser 507: }
1.231 paf 508:
509: return Exception();
1.122 parser 510: }
1.272 moko 511:
512: static void call_real_parser_handler__supress_system_exception(const char* filespec_to_process, const char* request_method, bool header_only){
1.231 paf 513: Exception parser_exception;
514: LPEXCEPTION_POINTERS system_exception=0;
1.122 parser 515:
1.231 paf 516: __try {
1.272 moko 517: parser_exception=call_real_parser_handler__do_PEH_return_it(filespec_to_process, request_method, header_only);
1.231 paf 518: } __except (
519: (system_exception=GetExceptionInformation()),
520: EXCEPTION_EXECUTE_HANDLER)
521: {
1.131 paf 522:
1.231 paf 523: if(system_exception)
524: if(_EXCEPTION_RECORD *er=system_exception->ExceptionRecord)
1.272 moko 525: throw Exception("system", 0, "0x%08X at 0x%08X", er->ExceptionCode, er->ExceptionAddress);
1.218 paf 526: else
1.272 moko 527: throw Exception("system", 0, "<no exception record>");
1.218 paf 528: else
1.272 moko 529: throw Exception("system", 0, "<no exception information>");
1.231 paf 530: }
531:
532: if(parser_exception)
533: throw Exception(parser_exception);
534: }
1.273 moko 535:
536: #define REAL_PARSER_HANDLER call_real_parser_handler__supress_system_exception
537: #else
538: #define REAL_PARSER_HANDLER real_parser_handler
1.218 paf 539: #endif
1.131 paf 540:
1.218 paf 541: static void usage(const char* program) {
1.188 paf 542: printf(
1.235 paf 543: "Parser/%s\n"
1.277 moko 544: "Copyright (c) 2001-2017 Art. Lebedev Studio (http://www.artlebedev.com)\n"
1.184 paf 545: "Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)\n"
546: "\n"
547: "Usage: %s [options] file\n"
548: "Options are:\n"
1.185 paf 549: #ifdef WITH_MAILRECEIVE
1.193 paf 550: " -m Parse mail, put received letter to $mail:received\n"
1.184 paf 551: #endif
1.193 paf 552: " -f config_file Use this config file (/path/to/auto.p)\n"
1.272 moko 553: " -h Display usage information (this message)\n",
554: PARSER_VERSION,
1.184 paf 555: program);
556: exit(EINVAL);
557: }
558:
1.249 misha 559: int main(int argc, char *argv[]) {
1.233 paf 560: #ifdef PA_DEBUG_CGI_ENTRY_EXIT
561: log("main: entry");
562: #endif
1.217 paf 563:
1.203 paf 564: #ifdef SIGUSR1
1.205 paf 565: if(signal(SIGUSR1, SIGUSR1_handler)==SIG_ERR)
1.203 paf 566: SAPI::die("Can not set handler for SIGUSR1");
567: #endif
568: #ifdef SIGPIPE
1.205 paf 569: if(signal(SIGPIPE, SIGPIPE_handler)==SIG_ERR)
1.203 paf 570: SAPI::die("Can not set handler for SIGPIPE");
571: #endif
572:
1.245 misha 573: argv_all=argv;
1.193 paf 574: argv0=argv[0];
1.45 paf 575:
1.32 paf 576: umask(2);
577:
1.3 paf 578: // were we started as CGI?
1.272 moko 579: cgi=(getenv("SERVER_SOFTWARE") || getenv("SERVER_NAME") || getenv("GATEWAY_INTERFACE") || getenv("REQUEST_METHOD")) && !getenv("PARSER_VERSION");
580:
1.184 paf 581: char *raw_filespec_to_process;
1.210 paf 582: if(cgi) {
1.184 paf 583: raw_filespec_to_process=getenv("PATH_TRANSLATED");
1.210 paf 584: if(raw_filespec_to_process && !*raw_filespec_to_process)
585: raw_filespec_to_process=0;
586: } else {
1.250 misha 587: int optind=1;
1.245 misha 588: while(optind < argc){
589: char *carg = argv[optind];
590: if(carg[0] != '-')
1.184 paf 591: break;
1.245 misha 592:
593: for(size_t k = 1; k < strlen(carg); k++){
594: char c = carg[k];
595: switch (c) {
596: case 'h':
597: usage(argv[0]);
598: break;
599: case 'f':
600: if(optind < argc - 1){
601: optind++;
602: config_filespec_cstr=argv[optind];
603: }
604: break;
1.185 paf 605: #ifdef WITH_MAILRECEIVE
1.245 misha 606: case 'm':
607: mail_received=true;
608: break;
609: #endif
610: default:
611: fprintf(stderr, "%s: invalid option '%c'\n", argv[0], c);
612: usage(argv[0]);
613: break;
614: }
1.184 paf 615: }
1.245 misha 616: optind++;
1.184 paf 617: }
1.245 misha 618:
619: if (optind > argc - 1) {
1.184 paf 620: fprintf(stderr, "%s: file not specified\n", argv[0]);
621: usage(argv[0]);
1.10 paf 622: }
1.245 misha 623: raw_filespec_to_process=argv[optind];
624: args_skip=optind;
1.10 paf 625: }
626:
1.264 moko 627: #ifdef _MSC_VER
1.100 parser 628: setmode(fileno(stdin), _O_BINARY);
629: setmode(fileno(stdout), _O_BINARY);
630: setmode(fileno(stderr), _O_BINARY);
631: #endif
632:
1.218 paf 633: #if defined(_MSC_VER) && defined(_DEBUG)
1.148 paf 634: // Get current flag
635: int tmpFlag = _CrtSetDbgFlag( _CRTDBG_REPORT_FLAG );
636:
637: // Turn on leak-checking bit
638: tmpFlag |= _CRTDBG_LEAK_CHECK_DF;
639:
640: // Set flag to the new value
641: _CrtSetDbgFlag( tmpFlag );
1.138 paf 642:
1.218 paf 643: _CrtSetReportMode( _CRT_WARN, _CRTDBG_MODE_FILE );
644: _CrtSetReportFile( _CRT_WARN, _CRTDBG_FILE_STDERR );
1.138 paf 645: #endif
646:
1.166 paf 647: char filespec_to_process[MAX_STRING];
648: full_file_spec(raw_filespec_to_process, filespec_to_process, sizeof(filespec_to_process));
1.10 paf 649:
1.218 paf 650: const char* request_method=getenv("REQUEST_METHOD");
1.35 paf 651: bool header_only=request_method && strcasecmp(request_method, "HEAD")==0;
1.131 paf 652:
1.122 parser 653: try { // global try
1.273 moko 654: REAL_PARSER_HANDLER(filespec_to_process, request_method, header_only);
1.122 parser 655: } catch(const Exception& e) { // global problem
1.44 paf 656: // don't allocate anything on pool here:
657: // possible pool' exception not catch-ed now
658: // and there could be out-of-memory exception
1.218 paf 659: char buf[MAX_STRING];
1.272 moko 660: snprintf(buf, MAX_STRING, "Unhandled exception %s", e.comment());
1.218 paf 661: // log it
662: SAPI::log(SAPI_info, "%s", buf);
663:
664: //
665: int content_length=strlen(buf);
666:
667: // prepare header
1.255 misha 668: // capitalized headers are used for preventing malloc during capitalization
669: SAPI::add_header_attribute(SAPI_info, HTTP_CONTENT_TYPE_CAPITALIZED, "text/plain");
670: // don't use 'format' function because it calls malloc
671: char content_length_cstr[MAX_NUMBER];
672: snprintf(content_length_cstr, MAX_NUMBER, "%u", content_length);
673: SAPI::add_header_attribute(SAPI_info, HTTP_CONTENT_LENGTH_CAPITALIZED, content_length_cstr);
1.218 paf 674:
675: // send header
676: SAPI::send_header(SAPI_info);
677:
678: // send body
679: if(!header_only)
680: SAPI::send_body(SAPI_info, buf, content_length);
1.43 paf 681:
1.218 paf 682: // unsuccessful finish
1.16 paf 683: }
1.109 parser 684:
1.233 paf 685: #ifdef PA_DEBUG_CGI_ENTRY_EXIT
686: log("main: successful return");
687: #endif
1.274 moko 688: return SAPI_info.http_response_code < 100 ? SAPI_info.http_response_code : 0;
1.1 paf 689: }
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