--- parser3/src/targets/cgi/parser3.C 2001/11/19 12:17:06 1.140 +++ parser3/src/targets/cgi/parser3.C 2020/12/15 20:57:56 1.331 @@ -1,103 +1,116 @@ /** @file Parser: scripting and CGI main. - Copyright(c) 2001 ArtLebedev Group(http://www.artlebedev.com) - Author: Alexander Petrosyan (http://paf.design.ru) - - $Id: parser3.C,v 1.140 2001/11/19 12:17:06 paf Exp $ + Copyright (c) 2001-2020 Art. Lebedev Studio (http://www.artlebedev.com) + Author: Alexandr Petrosian (http://paf.design.ru) */ -#include "pa_config_includes.h" - -#ifdef WIN32 -# include -#endif +volatile const char * IDENT_PARSER3_C="$Id: parser3.C,v 1.331 2020/12/15 20:57:56 moko Exp $"; -#if _MSC_VER -# include -#endif +#include "pa_config_includes.h" #include "pa_sapi.h" #include "classes.h" #include "pa_common.h" #include "pa_request.h" -#include "pa_socks.h" #include "pa_version.h" -#include "pool_storage.h" +#include "pa_vconsole.h" +#include "pa_sapi_info.h" + +#ifdef _MSC_VER +#include +#include +#include + +extern "C" HANDLE WINAPI GC_CreateThread(LPSECURITY_ATTRIBUTES, DWORD, LPTHREAD_START_ROUTINE, LPVOID, DWORD, LPDWORD); + +#else + +extern "C" int GC_pthread_create(pthread_t *, const pthread_attr_t *, void *(*)(void *), void * /* arg */); -#ifdef XML -#include #endif -//#define DEBUG_POOL_MALLOC +// defines -// consts +// comment remove me after debugging +//#define PA_DEBUG_CGI_ENTRY_EXIT "parser3-debug.log" -extern const char *main_RCSIds[]; -#ifdef USE_SMTP -extern const char *smtp_RCSIds[]; -#endif -extern const char *gd_RCSIds[]; -extern const char *classes_RCSIds[]; -extern const char *types_RCSIds[]; -extern const char *parser3_RCSIds[]; -#ifdef XML -extern const char *xalan_patched_RCSIds[]; -#endif -const char **RCSIds[]={ - main_RCSIds, -#ifdef USE_SMTP - smtp_RCSIds, -#endif - gd_RCSIds, - classes_RCSIds, - types_RCSIds, - parser3_RCSIds, -#ifdef XML - xalan_patched_RCSIds, +#if defined(_MSC_VER) && !defined(_DEBUG) +# define PA_SUPPRESS_SYSTEM_EXCEPTION #endif - 0 -}; -/// IIS refuses to read bigger chunks -const size_t READ_POST_CHUNK_SIZE=0x400*0x400; // 1M +// consts -const char *argv0; -Pool_storage pool_storage; -Pool pool(&pool_storage); // global pool [dont describe to doxygen: it confuses it with param names] -bool cgi; ///< we were started as CGI? +#define REDIRECT_PREFIX "REDIRECT_" +#define PARSER_CONFIG_ENV_NAME "CGI_PARSER_CONFIG" +#define PARSER_LOG_ENV_NAME "CGI_PARSER_LOG" + +static const char* filespec_to_process = 0; // [file] +static const char* httpd_host_port = 0; // -p option +static const char* config_filespec = 0; // -f option or from env or next to the executable if exists +static bool mail_received = false; // -m option? [asked to parse incoming message to $mail:received] +static char* parser3_filespec = 0; // argv[0] +static char** argv_extra = NULL; + +// for error logging +static THREAD_LOCAL Request_info request_info; // global for correct log() reporting +static const char* filespec_4log = NULL; // null only if system-wide auto.p used // SAPI -static void log(const char *fmt, va_list args) { - bool opened; +static void log(const char* fmt, va_list args) { + bool opened=false; FILE *f=0; - if(argv0) { - // beside by binary + const char* log_by_env=getenv(PARSER_LOG_ENV_NAME); + if(!log_by_env) + log_by_env=getenv(REDIRECT_PREFIX PARSER_LOG_ENV_NAME); + if(log_by_env) { + f=fopen(log_by_env, "at"); + opened=f!=0; + } +#ifdef PA_DEBUG_CGI_ENTRY_EXIT + f=fopen(PA_DEBUG_CGI_ENTRY_EXIT, "at"); + opened=f!=0; +#endif + + if(!opened && filespec_4log) { + char beside_config_path[MAX_STRING]; + strncpy(beside_config_path, filespec_4log, MAX_STRING-1); beside_config_path[MAX_STRING-1]=0; + if(!(rsplit(beside_config_path, '/') || rsplit(beside_config_path, '\\'))) { // strip filename + // no path, just filename + strcpy(beside_config_path, "."); + } + char file_spec[MAX_STRING]; - strncpy(file_spec, argv0, MAX_STRING-1); file_spec[MAX_STRING-1]=0; // filespec of my binary - rsplit(file_spec, '/'); rsplit(file_spec, '\\');// strip filename - strcat(file_spec, "/parser3.log"); + snprintf(file_spec, MAX_STRING, "%s/parser3.log", beside_config_path); f=fopen(file_spec, "at"); + opened=f!=0; } - opened=f!=0; + // fallback to stderr if(!opened) f=stderr; + // use no memory [so that we could log out-of-memory error] + setbuf(f, 0); // stderr stream is unbuffered by default, but still... + // prefix time_t t=time(0); - const char *stamp=ctime(&t); - fprintf(f, "[%.*s] ", strlen(stamp)-1, stamp); + if(const char* stamp=ctime(&t)) { // never saw that + if(size_t len=strlen(stamp)) // saw once stamp being ="" + fprintf(f, "[%.*s] [%u] ", (int)len-1, stamp, (unsigned int)getpid() ); + } // message - char buf[MAX_STRING]; - size_t size=vsnprintf(buf, MAX_STRING, fmt, args); - remove_crlf(buf, buf+size); - + char buf[MAX_LOG_STRING]; + size_t size=vsnprintf(buf, MAX_LOG_STRING, fmt, args); + size=remove_crlf(buf, buf+size); fwrite(buf, size, 1, f); - // newline - fprintf(f, "\n"); + + if(request_info.method) { + fprintf(f, " [uri=%s, method=%s, cl=%lu]\n", request_info.uri ? request_info.uri : "", request_info.method, (unsigned long)request_info.content_length); + } else + fputs(" [no request info]\n", f); if(opened) fclose(f); @@ -105,365 +118,578 @@ static void log(const char *fmt, va_list fflush(f); } -// appends to parser3.log located beside my binary if openable, to stderr otherwize -void SAPI::log(Pool& , const char *fmt, ...) { - va_list args; +#ifdef PA_DEBUG_CGI_ENTRY_EXIT +static void log(const char* fmt, ...) { + va_list args; va_start(args,fmt); - ::log(fmt, args); + log(fmt, args); va_end(args); } - -void SAPI::die(const char *fmt, ...) { -#ifdef DEBUG_POOL_MALLOC - extern void log_pool_stats(Pool& pool); - log_pool_stats(pool); #endif - // log - - // logging is more important than user - // she can cancel download, we'd get SIG_PIPE, - // nothing would be logged then - va_list args; +// appends to parser3.log located next to the config file if openable, to stderr otherwize +void SAPI::log(SAPI_Info&, const char* fmt, ...) { + va_list args; va_start(args,fmt); ::log(fmt, args); va_end(args); +} - // inform user +void SAPI::die(const char* fmt, ...) { + va_list args; - char body[MAX_STRING]; - int content_length=vsnprintf(body, MAX_STRING, fmt, args); + // logging first, first vsnprintf + va_start(args,fmt); + ::log(fmt, args); + va_end(args); - // prepare header - // let's be honest, that's bad we couldn't produce valid output - SAPI::add_header_attribute(pool, "status", "500"); - SAPI::add_header_attribute(pool, "content-type", "text/plain"); - char content_length_cstr[MAX_NUMBER]; - snprintf(content_length_cstr, MAX_NUMBER, "%u", content_length); - SAPI::add_header_attribute(pool, "content-length", content_length_cstr); + // inform user, second vsnprintf + va_start(args, fmt); + char message[MAX_STRING]; + vsnprintf(message, MAX_STRING, fmt, args); - // send header - SAPI::send_header(pool); + SAPI::send_error(*sapiInfo, message); + exit(1); +// va_end(args); +} - // body - SAPI::send_body(pool, body, content_length); +char* SAPI::Env::get(SAPI_Info& info, const char* name) { + return info.get_env(name); +} - exit(1); +bool SAPI::Env::set(SAPI_Info& info, const char* name, const char* value) { + return info.set_env(name, value); } -const char *SAPI::get_env(Pool& , const char *name) { - return getenv(name); +const char* const *SAPI::Env::get(SAPI_Info& info) { + return info.get_env(); } -size_t SAPI::read_post(Pool& , char *buf, size_t max_bytes) { - size_t read_size=0; - do { - int chunk_size=read(fileno(stdin), - buf+read_size, min(READ_POST_CHUNK_SIZE, max_bytes-read_size)); - if(chunk_size<=0) - break; - read_size+=chunk_size; - } while(read_sizemain_class.get_element(sigpipe_name); + if(sigpipe && sigpipe->as_bool()) + log_signal(SIGPIPE_NAME); -char *full_file_spec(char *file_name) { - if(file_name && !strchr(file_name, '/')) { - static char cwd[MAX_STRING]; getcwd(cwd, MAX_STRING); - static char buf[MAX_STRING]; - snprintf(buf, MAX_STRING, "%s/%s", cwd, file_name); - return buf; + if(request) + request->set_skip(Request::SKIP_INTERRUPTED); +} +#endif + +// requires pa_thread_request() in entry_exists() under Windows +static const char *locate_config(const char *config_filespec_option, const char *executable_path){ + filespec_4log=config_filespec_option; + if(!filespec_4log) + filespec_4log=getenv(PARSER_CONFIG_ENV_NAME); + if(!filespec_4log) + filespec_4log=getenv(REDIRECT_PREFIX PARSER_CONFIG_ENV_NAME); + if(!filespec_4log){ + // next to the executable + char *beside_executable_path = pa_strdup(executable_path); + bool stripped_filename = rsplit(beside_executable_path, '/') || rsplit(beside_executable_path, '\\'); + filespec_4log = pa_strcat(stripped_filename ? beside_executable_path : "." /* no path, just filename */ , "/" AUTO_FILE_NAME); + if(entry_exists(filespec_4log)) + return filespec_4log; +#ifdef SYSTEM_CONFIG_FILE + if(entry_exists(SYSTEM_CONFIG_FILE)){ + filespec_4log=NULL; + return SYSTEM_CONFIG_FILE; + } +#endif + return NULL; } - return file_name; + return filespec_4log; } -/** -main workhorse +#ifdef WIN32 +const char* maybe_reconstruct_IIS_status_in_qs(const char* original) { + // 404;http://servername/page[?param=value...] + // ';' should be urlencoded by HTTP standard, so we shouldn't get it from browser + // and can consider that as an indication that this is IIS way to report errors + + if(original && isdigit((unsigned char)original[0]) && isdigit((unsigned char)original[1]) && isdigit((unsigned char)original[2]) && original[3]==';'){ + size_t original_len=strlen(original); + char* reconstructed=new(PointerFreeGC) char[original_len +12/*IIS-STATUS=&*/ +14/*IIS-DOCUMENT=&*/ +1]; + char* cur=reconstructed; + memcpy(cur, "IIS-STATUS=", 11); cur+=11; + memcpy(cur, original, 3); cur+=3; + *cur++='&'; + + const char* qmark_at=strchr(original, '?'); + memcpy(cur, "IIS-DOCUMENT=", 13); cur+=13; + { + size_t value_len=(qmark_at ? qmark_at-original : original_len)-4; + memcpy(cur, original+4, value_len); cur+=value_len; + } - @todo - IIS: remove trailing default-document[index.html] from $request.uri. - to do that we need to consult metabase, - wich is tested but seems slow. -*/ -void real_parser_handler( - const char *filespec_to_process, - const char *request_method, bool header_only) { - // init socks - init_socks(pool); - -#ifdef XML - /** - * Initialize Xerces and Xalan. - * - * Should be called only once per process before making - * any other API calls. - */ - //_asm int 3; - XalanInitialize(); -#endif - - // init global classes - init_methoded_array(pool); - // init global variables - pa_globals_init(pool); - - if(!filespec_to_process) - throw Exception(0, 0, - 0, - "Parser/%s", PARSER_VERSION); - - // Request info - Request::Info request_info; - if(cgi) { - if(const char *env_document_root=SAPI::get_env(pool, "DOCUMENT_ROOT")) - request_info.document_root=env_document_root; - else if(const char *path_info=SAPI::get_env(pool, "PATH_INFO")) { - // IIS - size_t len=strlen(filespec_to_process)-strlen(path_info); - char *buf=(char *)pool.malloc(len+1); - memcpy(buf, filespec_to_process, len); buf[len]=0; - request_info.document_root=buf; + if(qmark_at) { + *cur++='&'; + strcpy(cur, qmark_at+1/*skip ? itself*/); } else - throw Exception(0, 0, - 0, - "CGI: no PATH_INFO defined(in reinventing DOCUMENT_ROOT)"); - } else { - static char buf[MAX_STRING]; - strncpy(buf, filespec_to_process, MAX_STRING-1); buf[MAX_STRING-1]=0; - if(rsplit(buf, '/') || rsplit(buf, '\\')) // strip filename - request_info.document_root=buf; - else - request_info.document_root=""; + *cur=0; + + return reconstructed; } - request_info.path_translated=filespec_to_process; - request_info.method=request_method ? request_method : "GET"; - const char *query_string=SAPI::get_env(pool, "QUERY_STRING"); - request_info.query_string=query_string; - if(cgi) { - if(const char *env_request_uri=SAPI::get_env(pool, "REQUEST_URI")) - request_info.uri=env_request_uri; - else if(const char *path_info=SAPI::get_env(pool, "PATH_INFO")) - if(query_string) { - char *reconstructed_uri=(char *)pool.malloc( - strlen(path_info)+1/*'?'*/+ - strlen(query_string)+1/*0*/); - strcpy(reconstructed_uri, path_info); - strcat(reconstructed_uri, "?"); - strcat(reconstructed_uri, query_string); - request_info.uri=reconstructed_uri; - } else - request_info.uri=path_info; - else - throw Exception(0, 0, - 0, - "CGI: no PATH_INFO defined(in reinventing REQUEST_URI)"); - - if(const char *script_name=SAPI::get_env(pool, "SCRIPT_NAME")) { - size_t script_name_len=strlen(script_name); - size_t uri_len=strlen(request_info.uri); - if(strncmp(request_info.uri,script_name, script_name_len)==0 && - script_name_len != uri_len) // under IIS they are the same - throw Exception(0, 0, - 0, - "CGI: illegal call"); - } - } else - request_info.uri=0; - - request_info.content_type=SAPI::get_env(pool, "CONTENT_TYPE"); - const char *content_length=SAPI::get_env(pool, "CONTENT_LENGTH"); - request_info.content_length=(content_length?atoi(content_length):0); - request_info.cookie=SAPI::get_env(pool, "HTTP_COOKIE"); - request_info.user_agent=SAPI::get_env(pool, "HTTP_USER_AGENT"); + return original; +} + +#define MAYBE_RECONSTRUCT_IIS_STATUS_IN_QS(s) maybe_reconstruct_IIS_status_in_qs(s) +#else +#define MAYBE_RECONSTRUCT_IIS_STATUS_IN_QS(s) s +#endif + + +class RequestController { +public: + RequestController(Request* r){ + ::request=r; + } + ~RequestController(){ + ::request=0; + } +}; + +static void config_handler(SAPI_Info &info) { + char document_root_buf[MAX_STRING]; + full_disk_path("", document_root_buf, sizeof(document_root_buf)); + + request_info.document_root = document_root_buf; + request_info.uri = ""; + request_info.argv = argv_extra; + // prepare to process request - Request request(pool, - request_info, - cgi ? String::UL_HTML|String::UL_OPTIMIZE_BIT : String::UL_AS_IS, - true /* status_allowed */); - - // some root-controlled location -#ifdef SYSCONFDIR - const char *root_config_filespec=SYSCONFDIR "/" CONFIG_FILE_NAME; + Request r(info, request_info, String::Language(String::L_HTML|String::L_OPTIMIZE_BIT)); + // only once + config_filespec = locate_config(config_filespec, parser3_filespec); + // process main auto.p only + r.core(config_filespec, false, String::Empty); +} + +static void connection_handler(SAPI_Info_HTTPD &info, HTTPD_Connection &connection) { + try { + memset(&request_info, 0, sizeof(request_info)); + + connection.read_header(); + info.populate_env(); + + char document_root_buf[MAX_STRING]; + full_disk_path("", document_root_buf, sizeof(document_root_buf)); + + request_info.document_root = document_root_buf; + request_info.path_translated = filespec_to_process; + request_info.method = connection.method(); + request_info.query_string = connection.query(); + request_info.uri = request_info.strip_absolute_uri(connection.uri()); + request_info.content_type = connection.content_type(); + request_info.content_length = (size_t)connection.content_length(); + request_info.cookie = info.get_env("HTTP_COOKIE"); + request_info.mail_received = false; + request_info.argv = argv_extra; + + // prepare to process request + Request r(info, request_info, String::Language(String::L_HTML|String::L_OPTIMIZE_BIT)); + // process the request + r.core(config_filespec, strcasecmp(request_info.method, "HEAD")==0, String("httpd-main")); + } catch(const Exception& e) { // exception in connection handling or unhandled exception + SAPI::log(info, "%s", e.comment()); + SAPI::send_error(info, e.comment(), info.exception_http_status(e.type())); + } +} + +#ifdef _MSC_VER +DWORD WINAPI connection_thread(void *arg){ #else -# ifdef WIN32 - // c:\windows - char root_config_path[MAX_STRING]; - GetWindowsDirectory(root_config_path, MAX_STRING); - - char root_config_filespec[MAX_STRING]; - snprintf(root_config_filespec, MAX_STRING, - "%s/%s", - root_config_path, CONFIG_FILE_NAME); -# else -#error must be compiled either configure/make or MSVC++ -# endif +static void *connection_thread(void *arg){ #endif - - // beside by binary - // @todo full path, not ./! - static char site_config_path[MAX_STRING]; - strncpy(site_config_path, argv0, MAX_STRING-1); site_config_path[MAX_STRING-1]=0; // filespec of my binary - if(!( - rsplit(site_config_path, '/') || - rsplit(site_config_path, '\\'))) { // strip filename - // no path, just filename - site_config_path[0]='.'; site_config_path[1]=0; + HTTPD_Connection &connection=*(HTTPD_Connection*)arg; + SAPI_Info_HTTPD info(connection); + + try { + connection_handler(info, connection); + } catch(const Exception& e) { // exception in send_error + SAPI::log(*sapiInfo, "%s", e.comment()); } + + delete(&connection); + return 0; +} + +static void httpd_mode() { + config_handler(*sapiInfo); + + int sock = HTTPD_Server::bind(httpd_host_port); + +#ifdef SIGCHLD + signal(SIGCHLD, SIG_IGN); +#endif +#ifdef SIGPIPE + signal(SIGPIPE, SIG_IGN); +#endif + + while(1){ +#ifndef _MSC_VER + pid_t pid=1; +#endif + try { + request_info.method=NULL; // wipe previous request for correct logging + HTTPD_Connection connection; + if(!connection.accept(sock, 5)) + continue; + + switch (HTTPD_Server::mode) { + case HTTPD_Server::MULTITHREADED: +#ifdef _MSC_VER + if (!GC_CreateThread(0, 0, connection_thread, new HTTPD_Connection(connection), 0, 0)) + throw Exception("httpd.fork", 0, "thread creation failed"); + connection.sock = -1; + break; +#else + pthread_t thread; + pthread_attr_t attr; + pthread_attr_init(&attr); + pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED); + + if(int result=GC_pthread_create(&thread, &attr, connection_thread, new HTTPD_Connection(connection))) + throw Exception("httpd.fork", 0, "thread creation failed (%d)", result); + connection.sock=-1; + break; + case HTTPD_Server::PARALLEL: + pid=fork(); + if(pid<0) + throw Exception("httpd.fork", 0, "fork failed: %s (%d)", strerror(errno), errno); + if(pid>0) + continue; // parent should close connection.sock as well +#endif + case HTTPD_Server::SEQUENTIAL: // and fork child + + SAPI_Info_HTTPD info(connection); + connection_handler(info, connection); + } + // closing connection socket in HTTPD_Connection destructor + } catch(const Exception& e) { // exception in accept or send_error + SAPI::log(*sapiInfo, "%s", e.comment()); + } + +#ifndef _MSC_VER + if(pid==0) // fork child + exit(0); +#endif + } +} + +/** main workhorse */ + +static void real_parser_handler(bool cgi) { + // init libraries + pa_globals_init(); + + if(httpd_host_port){ + httpd_mode(); + } + + const char* request_method=getenv("REQUEST_METHOD"); + + if(!filespec_to_process) + SAPI::die("Parser/%s", PARSER_VERSION); - char site_config_filespec[MAX_STRING]; - snprintf(site_config_filespec, MAX_STRING, - "%s/%s", - site_config_path, CONFIG_FILE_NAME); - - // process the request - request.core( - root_config_filespec, false, - site_config_filespec, false, - header_only); - - // - done_socks(); + char document_root_buf[MAX_STRING]; + + // global request info + request_info.path_translated = filespec_to_process; + request_info.method = request_method ? request_method : "GET"; + request_info.query_string = MAYBE_RECONSTRUCT_IIS_STATUS_IN_QS(getenv("QUERY_STRING")); + + if(cgi) { + // obligatory + const char* path_info=getenv("PATH_INFO"); + if(!path_info) + SAPI::die("CGI: illegal call (missing PATH_INFO)"); + + request_info.document_root = getenv("DOCUMENT_ROOT"); + if(!request_info.document_root) { + // IIS or fcgiwrap minimalistic setup + ssize_t prefix_len = strlen(filespec_to_process) - strlen(path_info); + if(prefix_len < 0 || strcmp(filespec_to_process + prefix_len, path_info) != 0) + SAPI::die("CGI: illegal call (invalid PATH_INFO in reinventing DOCUMENT_ROOT)"); + + char* document_root = new(PointerFreeGC) char[prefix_len + 1/*0*/]; + memcpy(document_root, filespec_to_process, prefix_len); document_root[prefix_len] = 0; + request_info.document_root = document_root; + } + + request_info.uri = request_info.strip_absolute_uri(getenv("REQUEST_URI")); + if(request_info.uri) { // apache & others stuck to standards + // another obligatory + const char* script_name = getenv("SCRIPT_NAME"); + if(!script_name) + SAPI::die("CGI: illegal call (missing SCRIPT_NAME)"); + /* + http://parser3/env.html?123 =OK + $request:uri=/env.html?123 + REQUEST_URI='/env.html?123' + SCRIPT_NAME='/cgi-bin/parser3' + PATH_INFO='/env.html' + + http://parser3/cgi-bin/parser3/env.html?123 =ERROR + $request:uri=/cgi-bin/parser3/env.html?123 + REQUEST_URI='/cgi-bin/parser3/env.html?123' + SCRIPT_NAME='/cgi-bin/parser3' + PATH_INFO='/env.html' + */ + size_t script_name_len = strlen(script_name); + size_t uri_len = strlen(request_info.uri); + if(strncmp(request_info.uri, script_name, script_name_len)==0 && script_name_len != uri_len) // under IIS they are the same + SAPI::die("CGI: illegal call (1)"); + } else { // fcgiwrap minimalistic setup + request_info.uri = request_info.query_string && *request_info.query_string ? pa_strcat(path_info, "?", request_info.query_string) : path_info; + } + } else{ + full_disk_path("", document_root_buf, sizeof(document_root_buf)); + request_info.document_root = document_root_buf; + request_info.uri = ""; + } -#ifdef DEBUG_POOL_MALLOC - extern void log_pool_stats(Pool& pool); - log_pool_stats(pool); + request_info.content_type = getenv("CONTENT_TYPE"); + request_info.content_length = (size_t)pa_atoul(getenv("CONTENT_LENGTH")); + request_info.cookie = getenv("HTTP_COOKIE"); + request_info.mail_received = mail_received; + + request_info.argv = argv_extra; + +#ifdef PA_DEBUG_CGI_ENTRY_EXIT + log("request_info: method=%s, uri=%s, q=%s, dr=%s, pt=%s", request_info.method, request_info.uri, request_info.query_string, request_info.document_root, request_info.path_translated); #endif + + // prepare to process request + Request r(*sapiInfo, request_info, cgi ? String::Language(String::L_HTML|String::L_OPTIMIZE_BIT) : String::L_AS_IS); + { + // initing ::request ptr for signal handlers + RequestController rc(&r); + // process the request + r.core(locate_config(config_filespec, parser3_filespec), strcasecmp(request_info.method, "HEAD")==0); + // clearing ::request in RequestController destructor to prevent signal handlers from accessing invalid memory + } + + // finalize libraries + pa_globals_done(); } -void call_real_parser_handler__do_SEH( - const char *filespec_to_process, - const char *request_method, bool header_only) { -#if _MSC_VER && !defined(_DEBUG) +#ifdef PA_SUPPRESS_SYSTEM_EXCEPTION +static const Exception call_real_parser_handler__do_PEH_return_it(bool cgi) { + try { + real_parser_handler(cgi); + } catch(const Exception& e) { + return e; + } + + return Exception(); +} + +static void call_real_parser_handler__supress_system_exception(bool cgi) { + Exception parser_exception; LPEXCEPTION_POINTERS system_exception=0; + __try { -#endif - real_parser_handler( - filespec_to_process, - request_method, header_only); - -#if _MSC_VER && !defined(_DEBUG) - } __except ( - (system_exception=GetExceptionInformation()), - EXCEPTION_EXECUTE_HANDLER) { - + parser_exception=call_real_parser_handler__do_PEH_return_it(cgi); + } __except ( (system_exception=GetExceptionInformation()), EXCEPTION_EXECUTE_HANDLER) { if(system_exception) if(_EXCEPTION_RECORD *er=system_exception->ExceptionRecord) - throw Exception(0, 0, - 0, - "Exception 0x%08X at 0x%08X", er->ExceptionCode, er->ExceptionAddress); - else - throw Exception(0, 0, 0, "Exception "); + throw Exception("system", 0, "0x%08X at 0x%08X", er->ExceptionCode, er->ExceptionAddress); else - throw Exception(0, 0, 0, "Exception "); + throw Exception("system", 0, ""); + else + throw Exception("system", 0, ""); } -#endif -} -#if _MSC_VER -int failed_new(size_t size) { - SAPI::die("out of memory in 'new', failed to allocated %u bytes", size); - return 0; // not reached + if(parser_exception) + throw Exception(parser_exception); } + +#define REAL_PARSER_HANDLER call_real_parser_handler__supress_system_exception +#else +#define REAL_PARSER_HANDLER real_parser_handler #endif -#ifdef HAVE_SET_NEW_HANDLER -void failed_new() { - SAPI::die("out of memory in 'new'"); +static void usage(const char* program) { + printf( + "Parser/%s\n" + "Copyright (c) 2001-2020 Art. Lebedev Studio (http://www.artlebedev.com)\n" + "Author: Alexandr Petrosian (http://paf.design.ru)\n" + "\n" + "Usage: %s [options] [file]\n" + "Options are:\n" +#ifdef WITH_MAILRECEIVE + " -m Parse mail, put received letter to $mail:received\n" +#endif + " -f config_file Use this config file (/path/to/auto.p)\n" + " -p [host:]port Start web server on this port\n" + " -h Display usage information (this message)\n", + PARSER_VERSION, + program); + exit(EINVAL); } -#endif + int main(int argc, char *argv[]) { - argv0=argv[0]; +#ifdef PA_DEBUG_CGI_ENTRY_EXIT + log("main: entry"); +#endif + parser3_filespec = argv[0]; umask(2); // were we started as CGI? - cgi= - getenv("SERVER_SOFTWARE") || - getenv("SERVER_NAME") || - getenv("GATEWAY_INTERFACE") || - getenv("REQUEST_METHOD"); - - if(!cgi) { - if(argc<2) { - printf( - "Parser/%s Copyright(c) 2001 ArtLebedev Group(http://www.artlebedev.com)\n" - "Author: Alexander Petrosyan (http://paf.design.ru)\n" - "\n" - "Usage: %s \n", - PARSER_VERSION, - argv0?argv0:"parser3"); - return 1; + bool cgi=(getenv("SERVER_SOFTWARE") || getenv("SERVER_NAME") || getenv("GATEWAY_INTERFACE") || getenv("REQUEST_METHOD")) && !getenv("PARSER_VERSION"); + sapiInfo = cgi ? new SAPI_Info_CGI() : new SAPI_Info(); + +#ifdef SIGUSR1 + signal(SIGUSR1, SIGUSR1_handler); +#endif +#ifdef SIGPIPE + signal(SIGPIPE, SIGPIPE_handler); +#endif + + char *raw_filespec_to_process = NULL; + if(cgi) { + raw_filespec_to_process=getenv("PATH_TRANSLATED"); + argv_extra=argv + 1; + } else { + int optind=1; + while(optind < argc){ + char *carg = argv[optind]; + if(carg[0] != '-') + break; + + for(size_t k = 1; k < strlen(carg); k++){ + char c = carg[k]; + switch (c) { + case 'h': + usage(argv[0]); + break; + case 'f': + if(optind < argc - 1){ + optind++; + config_filespec=argv[optind]; + } + break; + case 'p': + if(optind < argc - 1){ + optind++; + httpd_host_port=argv[optind]; + } + break; +#ifdef WITH_MAILRECEIVE + case 'm': + mail_received=true; + break; +#endif + default: + fprintf(stderr, "%s: invalid option '%c'\n", argv[0], c); + usage(argv[0]); + break; + } + } + optind++; } + + if (optind > argc - 1) { + if(!httpd_host_port) { + fprintf(stderr, "%s: file not specified\n", argv[0]); + usage(argv[0]); + } + } else { + raw_filespec_to_process=argv[optind]; + } + + if (httpd_host_port && mail_received) { + fprintf(stderr, "%s: -p and -m options should not be used together\n", argv[0]); + usage(argv[0]); + } + + argv_extra=argv + optind; } -#ifdef WIN32 +#ifdef _MSC_VER setmode(fileno(stdin), _O_BINARY); setmode(fileno(stdout), _O_BINARY); setmode(fileno(stderr), _O_BINARY); #endif -#if _MSC_VER - _set_new_handler(failed_new); -#endif +#if defined(_MSC_VER) && defined(_DEBUG) + // Get current flag + int tmpFlag = _CrtSetDbgFlag( _CRTDBG_REPORT_FLAG ); -#ifdef HAVE_SET_NEW_HANDLER - std::set_new_handler(failed_new); -#endif + // Turn on leak-checking bit + tmpFlag |= _CRTDBG_LEAK_CHECK_DF; - char *filespec_to_process=cgi?getenv("PATH_TRANSLATED"):argv[1]; -#ifdef WIN32 - back_slashes_to_slashes(filespec_to_process); -#endif - filespec_to_process=full_file_spec(filespec_to_process); + // Set flag to the new value + _CrtSetDbgFlag( tmpFlag ); - const char *request_method=getenv("REQUEST_METHOD"); - bool header_only=request_method && strcasecmp(request_method, "HEAD")==0; + _CrtSetReportMode( _CRT_WARN, _CRTDBG_MODE_FILE ); + _CrtSetReportFile( _CRT_WARN, _CRTDBG_FILE_STDERR ); +#endif try { // global try - call_real_parser_handler__do_SEH( - filespec_to_process, - request_method, header_only); - } catch(const Exception& e) { // global problem - // don't allocate anything on pool here: - // possible pool' exception not catch-ed now - // and there could be out-of-memory exception - - SAPI::die("exception in request exception handler: ", e.comment()); -#ifndef _DEBUG - } catch(...) { - SAPI::die(""); -#endif + char filespec_to_process_buf[MAX_STRING]; + if(raw_filespec_to_process && *raw_filespec_to_process){ + full_disk_path(raw_filespec_to_process, filespec_to_process_buf, sizeof(filespec_to_process_buf)); + filespec_to_process=filespec_to_process_buf; + } + + REAL_PARSER_HANDLER(cgi); + } catch(const Exception& e) { // exception in unhandled exception + SAPI::die("%s", e.comment()); } - -#ifndef WIN32 - // - if(!cgi) - SAPI::send_body(pool, "\n", 1); +#ifdef PA_DEBUG_CGI_ENTRY_EXIT + log("main: successful return"); #endif - return 0; + return sapiInfo->http_response_code < 100 ? sapiInfo->http_response_code : 0; }