--- parser3/src/targets/cgi/parser3.C 2001/03/13 17:54:14 1.2 +++ parser3/src/targets/cgi/parser3.C 2001/05/15 11:36:15 1.78 @@ -1,43 +1,323 @@ -/* - Parser - Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com) - Author: Alexander Petrosyan (http://design.ru/paf) +/** @file + Parser: scripting and CGI main. - $Id: parser3.C,v 1.2 2001/03/13 17:54:14 paf Exp $ + Copyright(c) 2001 ArtLebedev Group(http://www.artlebedev.com) + + Author: Alexander Petrosyan (http://design.ru/paf) + + $Id: parser3.C,v 1.78 2001/05/15 11:36:15 parser Exp $ */ -#include "core.h" -#include "pa_request.h" +#include "pa_config_includes.h" + +#ifdef WIN32 +# include +#endif + +#include "pa_sapi.h" +#include "classes.h" #include "pa_common.h" +#include "pa_request.h" +#include "pa_socks.h" +#include "pa_version.h" + +/// IIS refuses to read bigger chunks +const size_t READ_POST_CHUNK_SIZE=0x400*0x400; // 1M + +const char *argv0; +Pool pool(0); // global pool [dont describe to doxygen: it confuses it with param names] +bool cgi; ///< we were started as CGI? + +#ifdef WIN32 +/// 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 "); + + PTHROW(0, 0, + 0, + buf); + + return EXCEPTION_EXECUTE_HANDLER; // never reached +} +#endif + +// SAPI +// appends to parser3.log located beside my binary +void SAPI::log(Pool& pool, const char *fmt, ...) { + bool opened; + FILE *f=0; + + if(argv0) { + // beside by binary + char file_spec[MAX_STRING]; + strncpy(file_spec, argv0, MAX_STRING); // filespec of my binary + rsplit(file_spec, '/'); rsplit(file_spec, '\\');// strip filename + strcat(file_spec, "/parser3.log"); + f=fopen(file_spec, "at"); + } + opened=f!=0; + if(!opened) + f=stderr; + + // prefix + time_t t=time(0); + const char *stamp=ctime(&t); + fprintf(f, "[%.*s] ", strlen(stamp)-1, stamp); + // message + va_list args; + va_start(args,fmt); + vfprintf(f, fmt, args); + va_end(args); + // newline + fprintf(f, "\n"); + + if(opened) + fclose(f); +} + +const char *SAPI::get_env(Pool& pool, const char *name) { + return getenv(name); +} + +size_t SAPI::read_post(Pool& 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_size(http://design.ru/paf)\n" + "\n" + "Usage: %s \n", + PARSER_VERSION, + argv0?argv0:"parser3"); + return 1; + } + } + + char *filespec_to_process=cgi?getenv("PATH_TRANSLATED"):argv[1]; +#ifdef WIN32 + back_slashes_to_slashes(filespec_to_process); +#endif + + const char *request_method=getenv("REQUEST_METHOD"); + bool header_only=request_method && strcasecmp(request_method, "HEAD")==0; + PTRY { // global try + // must be first in PTRY{}PCATCH +#ifdef WIN32 + SetUnhandledExceptionFilter(&TopLevelExceptionFilter); +#endif + + // init socks + init_socks(pool); + + // init global classes + init_methoded_array(pool); + // init global variables + pa_globals_init(pool); + + if(!filespec_to_process) + PTHROW(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); + strncpy(buf, filespec_to_process, len); + buf[len]=0; + request_info.document_root=buf; + } else + PTHROW(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); + if(rsplit(buf, '/') || rsplit(buf, '\\')) // strip filename + request_info.document_root=buf; + else + request_info.document_root=""; + } + request_info.path_translated=filespec_to_process; + request_info.method=request_method; + 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 *)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 + PTHROW(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 + PTHROW(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"); + + // prepare to process request + Request request(pool, + request_info, + cgi ? String::UL_USER_HTML : 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 + // ~nobody todo: figure out a better place + const char *root_auto_path=SAPI::get_env(pool, "HOME"); +#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); + + // + done_socks(); + + extern void log_pool_stats(Pool& pool); + log_pool_stats(pool); + + // must be last in PTRY{}PCATCH +#ifdef WIN32 + SetUnhandledExceptionFilter(0); +#endif + // successful finish + return 0; + } PCATCH(e) { // global problem + // must be first in PCATCH{} +#ifdef WIN32 + SetUnhandledExceptionFilter(0); +#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(); + // log it + SAPI::log(pool, "exception in request exception handler: %s", body); + + // + int content_length=strlen(body); + + // prepare header + 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 + SAPI::send_header(pool); - // TODO: ifdef WIN32 flip \\ to / - char *document_root="Y:/parser3/src/"; - char *page_filespec="Y:/parser3/src/test.p"; - - // request - Request request(pool, - cgi?String::Untaint_lang::HTML_TYPO:String::Untaint_lang::NO, // :) - document_root, - page_filespec - ); - - bool error; - char *result=request.core(error); - - if(error) - printf("ERROR: %s", result); - else - printf("%s", result); + // body + if(!header_only) + SAPI::send_body(pool, body, content_length); - return 0; + // unsuccessful finish + return 1; + } + PEND_CATCH }