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| version 1.63, 2001/04/11 08:13:41 | version 1.342, 2020/12/31 19:48:47 |
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| Line 1 | Line 1 |
| /** @file | /** @file |
| Parser: scripting and CGI main. | Parser: scripting and CGI main. |
| Copyright(c) 2001 ArtLebedev Group(http://www.artlebedev.com) | Copyright (c) 2001-2020 Art. Lebedev Studio (http://www.artlebedev.com) |
| Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru) | |
| Author: Alexander Petrosyan <paf@design.ru>(http://design.ru/paf) | |
| $Id$ | |
| */ | */ |
| #include "pa_config_includes.h" | volatile const char * IDENT_PARSER3_C="$Id$"; |
| #ifdef WIN32 | |
| # include <windows.h> | |
| #endif | |
| #include <io.h> | #include "pa_config_includes.h" |
| #include <stdlib.h> | |
| #include <stdio.h> | |
| #include <fcntl.h> | |
| #include <time.h> | |
| #include "pa_sapi.h" | #include "pa_sapi.h" |
| #include "classes.h" | |
| #include "pa_common.h" | #include "pa_common.h" |
| #include "pa_globals.h" | |
| #include "pa_request.h" | #include "pa_request.h" |
| #include "pa_socks.h" | #include "pa_version.h" |
| #include "pa_threads.h" | |
| #include "pa_vconsole.h" | |
| #include "pa_sapi_info.h" | |
| #ifdef _MSC_VER | |
| #include <crtdbg.h> | |
| #include <windows.h> | |
| #include <direct.h> | |
| /// IIS refuses to read bigger chunks | extern "C" HANDLE WINAPI GC_CreateThread(LPSECURITY_ATTRIBUTES, DWORD, LPTHREAD_START_ROUTINE, LPVOID, DWORD, LPDWORD); |
| const size_t READ_POST_CHUNK_SIZE=0x400*0x400; // 1M | |
| const char *argv0; | #else |
| Pool pool(0); // global pool [dont describe to doxygen: it confuses it with param names] | |
| bool cgi; ///< we were started as CGI? | |
| #ifdef WIN32 | extern "C" int GC_pthread_create(pthread_t *, const pthread_attr_t *, void *(*)(void *), void * /* arg */); |
| /// global system errors into parser exceptions converter | |
| static LONG WINAPI TopLevelExceptionFilter(struct _EXCEPTION_POINTERS *ExceptionInfo) { | |
| char buf[MAX_STRING]; | |
| if(ExceptionInfo && ExceptionInfo->ExceptionRecord) { | |
| struct _EXCEPTION_RECORD *er=ExceptionInfo->ExceptionRecord; | |
| snprintf(buf, MAX_STRING, "Exception 0x%X at %p", | |
| er->ExceptionCode, | |
| er->ExceptionAddress); | |
| } else | |
| strcpy(buf, "Exception <unknown>"); | |
| PTHROW(0, 0, | |
| 0, | |
| buf); | |
| return EXCEPTION_EXECUTE_HANDLER; // never reached | |
| } | |
| #endif | #endif |
| // defines | |
| // comment remove me after debugging | |
| //#define PA_DEBUG_CGI_ENTRY_EXIT "parser3-debug.log" | |
| #if defined(_MSC_VER) && !defined(_DEBUG) | |
| # define PA_SUPPRESS_SYSTEM_EXCEPTION | |
| #endif | |
| // consts | |
| #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_4log = NULL; // global for correct log() reporting | |
| static const char* filespec_4log = NULL; // null only if system-wide auto.p used | |
| // SAPI | // SAPI |
| // appends to parser3.log located beside my binary | |
| void SAPI::log(Pool& pool, const char *fmt, ...) { | static void pa_log(const char* fmt, va_list args) { |
| bool opened; | bool opened=false; |
| FILE *f=0; | FILE *f=0; |
| if(argv0) { | const char* log_by_env=getenv(PARSER_LOG_ENV_NAME); |
| // beside by binary | 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]; | char file_spec[MAX_STRING]; |
| strncpy(file_spec, argv0, MAX_STRING); // filespec of my binary | snprintf(file_spec, MAX_STRING, "%s/parser3.log", beside_config_path); |
| rsplit(file_spec, '/'); rsplit(file_spec, '\\');// strip filename | |
| strcat(file_spec, "/parser3.log"); | |
| f=fopen(file_spec, "at"); | f=fopen(file_spec, "at"); |
| opened=f!=0; | |
| } | } |
| opened=f!=0; | // fallback to stderr |
| if(!opened) | if(!opened) |
| f=stderr; | 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 | // prefix |
| time_t t=time(0); | time_t t=time(0); |
| const char *stamp=ctime(&t); | if(const char* stamp=ctime(&t)) { // never saw that |
| fprintf(f, "[%.*s] ", strlen(stamp)-1, stamp); | if(size_t len=strlen(stamp)) // saw once stamp being ="" |
| fprintf(f, "[%.*s] [%u] ", (int)len-1, stamp, (unsigned int)pa_get_thread_id() ); | |
| } | |
| // message | // message |
| va_list args; | |
| va_start(args,fmt); | char buf[MAX_LOG_STRING]; |
| vfprintf(f, fmt, args); | size_t size=vsnprintf(buf, MAX_LOG_STRING, fmt, args); |
| va_end(args); | size=remove_crlf(buf, buf+size); |
| // newline | fwrite(buf, size, 1, f); |
| fprintf(f, "\n"); | |
| if(request_info_4log && request_info_4log->method) { | |
| fprintf(f, " [uri=%s, method=%s, cl=%lu]\n", request_info_4log->uri ? request_info_4log->uri : "<unknown>", request_info_4log->method, (unsigned long)request_info_4log->content_length); | |
| } else | |
| fputs(" [no request info]\n", f); | |
| if(opened) | if(opened) |
| fclose(f); | fclose(f); |
| else | |
| fflush(f); | |
| } | |
| void pa_log(const char* fmt, ...) { | |
| va_list args; | |
| va_start(args,fmt); | |
| pa_log(fmt, args); | |
| va_end(args); | |
| } | } |
| const char *SAPI::get_env(Pool& pool, const char *name) { | // appends to parser3.log located next to the config file if openable, to stderr otherwize |
| return getenv(name); | void SAPI::log(SAPI_Info&, const char* fmt, ...) { |
| va_list args; | |
| va_start(args,fmt); | |
| pa_log(fmt, args); | |
| va_end(args); | |
| } | } |
| size_t SAPI::read_post(Pool& pool, char *buf, size_t max_bytes) { | void SAPI::die(const char* fmt, ...) { |
| size_t read_size=0; | va_list args; |
| do { | |
| int chunk_size=read(fileno(stdin), | // logging first, first vsnprintf |
| buf+read_size, min(READ_POST_CHUNK_SIZE, max_bytes-read_size)); | va_start(args,fmt); |
| if(chunk_size<0) | pa_log(fmt, args); |
| break; | va_end(args); |
| read_size+=chunk_size; | |
| } while(read_size<max_bytes); | |
| return read_size; | // inform user, second vsnprintf |
| va_start(args, fmt); | |
| char message[MAX_STRING]; | |
| vsnprintf(message, MAX_STRING, fmt, args); | |
| SAPI::send_error(*sapiInfo, message); | |
| exit(1); | |
| // va_end(args); | |
| } | } |
| void SAPI::add_header_attribute(Pool& pool, const char *key, const char *value) { | char* SAPI::Env::get(SAPI_Info& info, const char* name) { |
| if(cgi) | return info.get_env(name); |
| printf("%s: %s\n", key, value); | |
| } | } |
| /// @todo intelligent cache-control | bool SAPI::Env::set(SAPI_Info& info, const char* name, const char* value) { |
| void SAPI::send_header(Pool& pool) { | return info.set_env(name, value); |
| if(cgi) { | } |
| puts("expires: Fri, 23 Mar 2001 09:32:23 GMT"); | |
| // header | body delimiter | const char* const *SAPI::Env::get(SAPI_Info& info) { |
| puts(""); | return info.get_env(); |
| } | |
| } | } |
| void SAPI::send_body(Pool& pool, const void *buf, size_t size) { | size_t SAPI::read_post(SAPI_Info& info, char *buf, size_t max_bytes) { |
| stdout_write(buf, size); | return info.read_post(buf, max_bytes); |
| } | } |
| /** | void SAPI::add_header_attribute(SAPI_Info& info, const char* dont_store_key, const char* dont_store_value) { |
| main workhorse | info.add_header_attribute(dont_store_key, dont_store_value); |
| } | |
| @todo | void SAPI::send_header(SAPI_Info& info) { |
| IIS: remove trailing default-document[index.html] from $request.uri. | info.send_header(); |
| to do that we need to consult metabase, | } |
| wich is tested but seems slow. | |
| */ | |
| int main(int argc, char *argv[]) { | |
| argv0=argv[0]; | |
| umask(2); | size_t SAPI::send_body(SAPI_Info& info, const void *buf, size_t size) { |
| return info.send_body(buf, size); | |
| } | |
| static void full_disk_path(const char* file_name, char *buf, size_t buf_size) { | |
| if(file_name[0]=='/' | |
| #ifdef WIN32 | #ifdef WIN32 |
| setmode(fileno(stdin), _O_BINARY); | || file_name[0] && file_name[1]==':' |
| setmode(fileno(stdout), _O_BINARY); | #endif |
| setmode(fileno(stderr), _O_BINARY); | ){ |
| strncpy(buf, file_name, buf_size-1); buf[buf_size-1]=0; | |
| } else { | |
| char cwd[MAX_STRING]; | |
| snprintf(buf, buf_size, "%s/%s", getcwd(cwd, MAX_STRING) ? cwd : "", file_name); | |
| } | |
| #ifdef WIN32 | |
| back_slashes_to_slashes(buf); | |
| #endif | |
| } | |
| static void log_signal(const char* signal_name) { | |
| SAPI::log(*sapiInfo, "%s received %s processing request", signal_name, request ? "while" : "before or after"); | |
| } | |
| #ifdef SIGPIPE | |
| #define SIGPIPE_NAME "SIGPIPE" | |
| static const String sigpipe_name(SIGPIPE_NAME); | |
| static void SIGPIPE_handler(int /*sig*/){ | |
| Value* sigpipe=0; | |
| if(request) | |
| sigpipe=request->main_class.get_element(sigpipe_name); | |
| if(sigpipe && sigpipe->as_bool()) | |
| log_signal(SIGPIPE_NAME); | |
| if(request) | |
| request->set_skip(Request::SKIP_INTERRUPTED); | |
| } | |
| #endif | #endif |
| // were we started as CGI? | // requires pa_thread_request() in entry_exists() under Windows |
| cgi= | static const char *locate_config(const char *config_filespec_option, const char *executable_path){ |
| getenv("SERVER_SOFTWARE") || | filespec_4log=config_filespec_option; |
| getenv("SERVER_NAME") || | if(!filespec_4log) |
| getenv("GATEWAY_INTERFACE") || | filespec_4log=getenv(PARSER_CONFIG_ENV_NAME); |
| getenv("REQUEST_METHOD"); | 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 filespec_4log; | |
| } | |
| #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; | |
| } | |
| if(qmark_at) { | |
| *cur++='&'; | |
| strcpy(cur, qmark_at+1/*skip ? itself*/); | |
| } else | |
| *cur=0; | |
| return reconstructed; | |
| } | |
| if(!cgi) { | return original; |
| if(argc<2) { | } |
| printf("Usage: %s <file>\n", argv0?argv0:"parser3"); | |
| exit(1); | #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; | |
| } | |
| }; | |
| class RequestInfoController { | |
| public: | |
| RequestInfoController(Request_info* rinfo){ | |
| request_info_4log=rinfo; | |
| } | |
| ~RequestInfoController(){ | |
| request_info_4log=0; | |
| } | |
| }; | |
| /** httpd support */ | |
| static const String httpd_class_name("httpd"); | |
| 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 request_info; | |
| RequestInfoController ric(&request_info); | |
| request_info.document_root = document_root_buf; | |
| request_info.uri = ""; | |
| request_info.argv = argv_extra; | |
| // prepare to process request | |
| 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) { | |
| Request_info request_info; | |
| RequestInfoController ric(&request_info); | |
| try { | |
| if(!connection.read_header()) | |
| return; // ignore "void" connections | |
| 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, main_method_name, &httpd_class_name); | |
| } catch(const Exception& e) { // exception in connection handling or unhandled exception | |
| SAPI::log(info, "%s", e.comment()); | |
| const char *status = info.exception_http_status(e.type()); | |
| if(*status){ | |
| info.clear_response_headers(); | |
| SAPI::send_error(info, e.comment(), status); | |
| } | } |
| } | } |
| } | |
| char *filespec_to_process=cgi?getenv("PATH_TRANSLATED"):argv[1]; | #ifdef _MSC_VER |
| #ifdef WIN32 | DWORD WINAPI connection_thread(void *arg){ |
| back_slashes_to_slashes(filespec_to_process); | #else |
| static void *connection_thread(void *arg){ | |
| #endif | #endif |
| HTTPD_Connection &connection=*(HTTPD_Connection*)arg; | |
| SAPI_Info_HTTPD info(connection); | |
| const char *request_method=getenv("REQUEST_METHOD"); | try { |
| bool header_only=request_method && strcasecmp(request_method, "HEAD")==0; | connection_handler(info, connection); |
| PTRY { // global try | } catch(const Exception& e) { // exception in send_error |
| // must be first in PTRY{}PCATCH | SAPI::log(*sapiInfo, "%s", e.comment()); |
| #ifdef WIN32 | } |
| SetUnhandledExceptionFilter(&TopLevelExceptionFilter); | |
| 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 | #endif |
| // init socks | while(1){ |
| init_socks(pool); | #ifndef _MSC_VER |
| pid_t pid=1; | |
| #endif | |
| try { | |
| 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 | |
| #ifdef HAVE_TLS | |
| 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; | |
| #endif | |
| 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 | |
| // init global variables | SAPI_Info_HTTPD info(connection); |
| pa_globals_init(pool); | 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()); | |
| } | |
| if(!filespec_to_process) | #ifndef _MSC_VER |
| PTHROW(0, 0, | if(pid==0) // fork child |
| 0, | exit(0); |
| "no file to process"); | #endif |
| } | |
| // Request info | } |
| Request::Info request_info; | |
| if(cgi) { | /** main workhorse */ |
| if(const char *env_document_root=SAPI::get_env(pool, "DOCUMENT_ROOT")) | |
| request_info.document_root=env_document_root; | static void real_parser_handler(bool cgi) { |
| else if(const char *path_info=SAPI::get_env(pool, "PATH_INFO")) { | // init libraries |
| // IIS | pa_globals_init(); |
| size_t len=strlen(filespec_to_process)-strlen(path_info); | |
| char *buf=(char *)pool.malloc(len+1); | if(httpd_host_port){ |
| strncpy(buf, filespec_to_process, len); | httpd_mode(); |
| buf[len]=0; | } |
| request_info.document_root=buf; | |
| } else | const char* request_method=getenv("REQUEST_METHOD"); |
| PTHROW(0, 0, | |
| 0, | if(!filespec_to_process) |
| "CGI: no PATH_INFO defined(in reinventing DOCUMENT_ROOT)"); | SAPI::die("Parser/%s", PARSER_VERSION); |
| } else { | |
| static char buf[MAX_STRING]; | char document_root_buf[MAX_STRING]; |
| strncpy(buf, filespec_to_process, MAX_STRING); | |
| rsplit(buf, '/'); rsplit(buf, '\\');// strip filename | // global request info |
| request_info.document_root=buf; | Request_info request_info; |
| RequestInfoController ric(&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; | |
| } | } |
| request_info.path_translated=filespec_to_process; | } else{ |
| request_info.method=request_method; | full_disk_path("", document_root_buf, sizeof(document_root_buf)); |
| const char *query_string=SAPI::get_env(pool, "QUERY_STRING"); | request_info.document_root = document_root_buf; |
| request_info.query_string=query_string; | request_info.uri = ""; |
| if(cgi) | } |
| if(const char *env_request_uri=SAPI::get_env(pool, "REQUEST_URI")) | |
| request_info.uri=env_request_uri; | request_info.content_type = getenv("CONTENT_TYPE"); |
| else if(const char *path_info=SAPI::get_env(pool, "PATH_INFO")) | request_info.content_length = (size_t)pa_atoul(getenv("CONTENT_LENGTH")); |
| if(query_string) { | request_info.cookie = getenv("HTTP_COOKIE"); |
| char *reconstructed_uri=(char *)malloc( | request_info.mail_received = mail_received; |
| strlen(path_info)+1/*'?'*/+ | |
| strlen(query_string)+1/*0*/); | request_info.argv = argv_extra; |
| strcpy(reconstructed_uri, path_info); | |
| strcat(reconstructed_uri, "?"); | #ifdef PA_DEBUG_CGI_ENTRY_EXIT |
| strcat(reconstructed_uri, query_string); | 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); |
| request_info.uri=reconstructed_uri; | #endif |
| } else | |
| request_info.uri=path_info; | // 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(); | |
| } | |
| #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 { | |
| 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("system", 0, "0x%08X at 0x%08X", er->ExceptionCode, er->ExceptionAddress); | |
| else | else |
| PTHROW(0, 0, | throw Exception("system", 0, "<no exception record>"); |
| 0, | |
| "CGI: no PATH_INFO defined(in reinventing REQUEST_URI)"); | |
| else | else |
| request_info.uri=0; | throw Exception("system", 0, "<no exception information>"); |
| } | |
| request_info.content_type=SAPI::get_env(pool, "CONTENT_TYPE"); | if(parser_exception) |
| const char *content_length=SAPI::get_env(pool, "CONTENT_LENGTH"); | throw Exception(parser_exception); |
| 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"); | |
| // prepare to process request | #define REAL_PARSER_HANDLER call_real_parser_handler__supress_system_exception |
| Request request(pool, | |
| request_info, | |
| 1||cgi ? String::UL_HTML_TYPO : String::UL_AS_IS | |
| ); | |
| // some root-controlled location | |
| #ifdef WIN32 | |
| // c:\windows | |
| static char root_auto_path[MAX_STRING]; | |
| GetWindowsDirectory(root_auto_path, MAX_STRING); | |
| #else | #else |
| // ~nobody todo: figure out a better place | #define REAL_PARSER_HANDLER real_parser_handler |
| char *root_auto_path=SAPI::get_env(pool, "HOME"); | |
| #endif | #endif |
| // beside by binary | |
| static char site_auto_path[MAX_STRING]; | |
| strncpy(site_auto_path, argv[0], MAX_STRING); // filespec of my binary | |
| rsplit(site_auto_path, '/'); rsplit(site_auto_path, '\\');// strip filename | |
| // process the request | |
| request.core( | |
| root_auto_path, false, | |
| site_auto_path, false, | |
| header_only); | |
| // | static void usage(const char* program) { |
| done_socks(); | printf( |
| "Parser/%s\n" | |
| "Copyright (c) 2001-2020 Art. Lebedev Studio (http://www.artlebedev.com)\n" | |
| "Author: Alexandr Petrosian <paf@design.ru> (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); | |
| } | |
| // must be last in PTRY{}PCATCH | int main(int argc, char *argv[]) { |
| #ifdef WIN32 | #ifdef PA_DEBUG_CGI_ENTRY_EXIT |
| SetUnhandledExceptionFilter(0); | log("main: entry"); |
| #endif | #endif |
| // successful finish | |
| return 0; | parser3_filespec = argv[0]; |
| } PCATCH(e) { // global problem | umask(2); |
| // must be first in PCATCH{} | |
| #ifdef WIN32 | // were we started as CGI? |
| SetUnhandledExceptionFilter(0); | 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 SIGPIPE | |
| signal(SIGPIPE, SIGPIPE_handler); | |
| #endif | #endif |
| // don't allocate anything on pool here: | |
| // possible pool' exception not catch-ed now | |
| // and there could be out-of-memory exception | |
| const char *body=e.comment(); | char *raw_filespec_to_process = NULL; |
| // log it | if(cgi) { |
| SAPI::log(pool, "exception in request exception handler: %s", body); | 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) { |
| int content_length=strlen(body); | fprintf(stderr, "%s: -p and -m options should not be used together\n", argv[0]); |
| usage(argv[0]); | |
| } | |
| // prepare header | argv_extra=argv + optind; |
| 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); | |
| // send header | #ifdef _MSC_VER |
| SAPI::send_header(pool); | setmode(fileno(stdin), _O_BINARY); |
| setmode(fileno(stdout), _O_BINARY); | |
| setmode(fileno(stderr), _O_BINARY); | |
| #endif | |
| #if defined(_MSC_VER) && defined(_DEBUG) | |
| // Get current flag | |
| int tmpFlag = _CrtSetDbgFlag( _CRTDBG_REPORT_FLAG ); | |
| // Turn on leak-checking bit | |
| tmpFlag |= _CRTDBG_LEAK_CHECK_DF; | |
| // Set flag to the new value | |
| _CrtSetDbgFlag( tmpFlag ); | |
| // body | _CrtSetReportMode( _CRT_WARN, _CRTDBG_MODE_FILE ); |
| if(!header_only) | _CrtSetReportFile( _CRT_WARN, _CRTDBG_FILE_STDERR ); |
| SAPI::send_body(pool, body, content_length); | #endif |
| try { // global try | |
| 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; | |
| } | |
| // unsuccessful finish | REAL_PARSER_HANDLER(cgi); |
| return 1; | } catch(const Exception& e) { // exception in unhandled exception |
| SAPI::die("%s", e.comment()); | |
| } | } |
| PEND_CATCH | |
| #ifdef PA_DEBUG_CGI_ENTRY_EXIT | |
| log("main: successful return"); | |
| #endif | |
| return sapiInfo->http_response_code < 100 ? sapiInfo->http_response_code : 0; | |
| } | } |