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| version 1.41, 2001/03/23 14:03:28 | version 1.288, 2020/08/12 22:00:12 |
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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) 2001-2017 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 "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_version.h" | |
| #include "pa_vconsole.h" | |
| Pool pool; // global pool [dont describe to doxygen: it confuses it with param names] | #ifdef _MSC_VER |
| bool cgi; ///< we were started as CGI? | #include <crtdbg.h> |
| #include <windows.h> | |
| #include <direct.h> | |
| #endif | |
| #ifdef WIN32 | // defines |
| /// global system errors into parser exceptions converter | |
| static LONG WINAPI TopLevelExceptionFilter (struct _EXCEPTION_POINTERS *ExceptionInfo) { | // comment remove me after debugging |
| char buf[MAX_STRING]; | //#define PA_DEBUG_CGI_ENTRY_EXIT "parser3-debug.log" |
| if(ExceptionInfo && ExceptionInfo->ExceptionRecord) { | |
| struct _EXCEPTION_RECORD *er=ExceptionInfo->ExceptionRecord; | #if defined(_MSC_VER) && !defined(_DEBUG) |
| snprintf(buf, MAX_STRING, "Exception %#X at %p", | # define PA_SUPPRESS_SYSTEM_EXCEPTION |
| er->ExceptionCode, | #endif |
| er->ExceptionAddress); | |
| } else | // consts |
| strcpy(buf, "Exception <unknown>"); | |
| #define REDIRECT_PREFIX "REDIRECT_" | |
| PTHROW(0, 0, | #define PARSER_CONFIG_ENV_NAME "CGI_PARSER_CONFIG" |
| 0, | #define PARSER_LOG_ENV_NAME "CGI_PARSER_LOG" |
| buf); | |
| /// IIS refuses to read bigger chunks | |
| const size_t READ_POST_CHUNK_SIZE=0x400*0x400; // 1M | |
| static const char* config_filespec_cstr=0; | |
| static int args_skip=1; | |
| static char** argv_all = NULL; | |
| static bool cgi; ///< we were started as CGI? | |
| static bool mail_received=false; ///< we were started with -m option? [asked to parse incoming message to $mail:received] | |
| // for signal handlers | |
| Request *request=0; | |
| Request_info *request_info=0; | |
| bool execution_canceled=false; | |
| // SAPI | |
| return EXCEPTION_EXECUTE_HANDLER; // never reached | class SAPI_Info { |
| public: | |
| int http_response_code; | |
| } SAPI_info = { 0 }; | |
| static void log(const char* fmt, va_list args) { | |
| bool opened=false; | |
| FILE *f=0; | |
| 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 && config_filespec_cstr) { | |
| char beside_config_path[MAX_STRING]; | |
| strncpy(beside_config_path, config_filespec_cstr, 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 | |
| beside_config_path[0]='.'; beside_config_path[1]=0; | |
| } | |
| char file_spec[MAX_STRING]; | |
| snprintf(file_spec, MAX_STRING, "%s/parser3.log", beside_config_path); | |
| f=fopen(file_spec, "at"); | |
| 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); | |
| 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_LOG_STRING]; | |
| size_t size=vsnprintf(buf, MAX_LOG_STRING, fmt, args); | |
| size=remove_crlf(buf, buf+size); | |
| fwrite(buf, size, 1, f); | |
| if(request_info) | |
| fprintf(f, " [uri=%s, method=%s, cl=%lu]", | |
| request_info->uri ? request_info->uri : "<unknown>", | |
| request_info->method ? request_info->method : "<unknown>", | |
| request_info->content_length); | |
| else | |
| fputs(" [no request info]", f); | |
| // newline | |
| fputs("\n", f); | |
| if(opened) | |
| fclose(f); | |
| else | |
| fflush(f); | |
| } | |
| #ifdef PA_DEBUG_CGI_ENTRY_EXIT | |
| static void log(const char* fmt, ...) { | |
| va_list args; | |
| va_start(args,fmt); | |
| log(fmt, args); | |
| va_end(args); | |
| } | } |
| #endif | #endif |
| #ifdef WIN32 | // appends to parser3.log located beside my binary if openable, to stderr otherwize |
| static void fix_slashes(char *s) { | void SAPI::log(SAPI_Info&, const char* fmt, ...) { |
| if(s) | va_list args; |
| for(; *s; s++) | va_start(args,fmt); |
| if(*s=='\\') | ::log(fmt, args); |
| *s='/'; | va_end(args); |
| } | } |
| static void die_or_abort(const char* fmt, va_list args, bool write_core) { | |
| // inform user | |
| char body[MAX_STRING]; | |
| int content_length=vsnprintf(body, MAX_STRING, fmt, args); | |
| // prepare header | |
| // let's be honest, that's bad we couldn't produce valid output | |
| // capitalized headers passed for preventing malloc during capitalization | |
| SAPI::add_header_attribute(SAPI_info, HTTP_STATUS_CAPITALIZED, "500"); | |
| SAPI::add_header_attribute(SAPI_info, HTTP_CONTENT_TYPE_CAPITALIZED, "text/plain"); | |
| // don't use 'format' function because it calls malloc | |
| char content_length_cstr[MAX_NUMBER]; | |
| snprintf(content_length_cstr, sizeof(content_length_cstr), "%u", content_length); | |
| SAPI::add_header_attribute(SAPI_info, HTTP_CONTENT_LENGTH_CAPITALIZED, content_length_cstr); | |
| // send header | |
| SAPI::send_header(SAPI_info); | |
| // body | |
| SAPI::send_body(SAPI_info, body, content_length); | |
| // exit & try to produce core dump[unix] or invoke debugger[Win32 Debug version] | |
| if(write_core) { | |
| #ifdef WIN32 | |
| // IIS with abort failes to show STDOUT, it just barks "abnormal program termination" | |
| exit(1); | |
| #else | |
| abort(); | |
| #endif | #endif |
| } else | |
| exit(1); | |
| } | |
| void SAPI::die(const char* fmt, ...) { | |
| va_list args; | |
| // logging first, can't log inside die_or_abort due to vsnprintf (bug #106) | |
| va_start(args,fmt); | |
| ::log(fmt, args); | |
| va_end(args); | |
| va_start(args, fmt); | |
| die_or_abort(fmt, args, false /*write core?*/); | |
| // va_end(args); | |
| } | |
| void SAPI::abort(const char* fmt, ...) { | |
| va_list args; | |
| //@{ | // logging first, can't log inside die_or_abort due to vsnprintf (bug #106) |
| /// SAPI funcs decl | va_start(args,fmt); |
| const char *SAPI::get_env(Pool& pool, const char *name) { | ::log(fmt, args); |
| return getenv(name); | va_end(args); |
| va_start(args, fmt); | |
| die_or_abort(fmt, args, true /*write core?*/); | |
| // va_end(args); | |
| } | } |
| uint SAPI::read_post(Pool& pool, char *buf, uint max_bytes) { | char* SAPI::Env::get(SAPI_Info& , const char* name) { |
| uint read_size=0; | if(char *local=getenv(name)) |
| return pa_strdup(local); | |
| else | |
| return 0; | |
| } | |
| const char* const *SAPI::Env::get(SAPI_Info&) { | |
| #ifdef _MSC_VER | |
| extern char **_environ; | |
| return _environ; | |
| #else | |
| extern char **environ; | |
| return environ; | |
| #endif | |
| } | |
| size_t SAPI::read_post(SAPI_Info& , char *buf, size_t max_bytes) { | |
| size_t read_size=0; | |
| do { | do { |
| int chunk_size=read(fileno(stdin), | ssize_t chunk_size=read(fileno(stdin), buf+read_size, min(READ_POST_CHUNK_SIZE, max_bytes-read_size)); |
| buf+read_size, min(0x400*0x400, max_bytes-read_size)); | if(chunk_size<=0) |
| if(chunk_size<0) | |
| break; | break; |
| read_size+=chunk_size; | read_size+=chunk_size; |
| } while(read_size<max_bytes); | } while(read_size<max_bytes); |
| Line 75 uint SAPI::read_post(Pool& pool, char *b | Line 232 uint SAPI::read_post(Pool& pool, char *b |
| return read_size; | return read_size; |
| } | } |
| void SAPI::add_header_attribute(Pool& pool, const char *key, const char *value) { | void SAPI::add_header_attribute(SAPI_Info& , const char* dont_store_key, const char* dont_store_value) { |
| if(cgi) | if(strcasecmp(dont_store_key, HTTP_STATUS)==0) |
| printf("%s: %s\n", key, value); | SAPI_info.http_response_code=atoi(dont_store_value); |
| if( cgi && (!request || !request->console.was_used()) ) | |
| printf("%s: %s\n", capitalize(dont_store_key), dont_store_value); | |
| } | } |
| /// @todo intelligent cache-control | void SAPI::send_header(SAPI_Info& ) { |
| void SAPI::send_header(Pool& pool) { | |
| if(cgi) { | if(cgi) { |
| puts("expires: Fri, 23 Mar 2001 09:32:23 GMT"); | |
| // header | body delimiter | |
| puts(""); | puts(""); |
| } | } |
| } | } |
| void SAPI::send_body(Pool& pool, const char *buf, size_t size) { | size_t SAPI::send_body(SAPI_Info& , const void *buf, size_t size) { |
| stdout_write(buf, size); | return stdout_write(buf, size); |
| } | } |
| //@} | |
| /** | static void full_file_spec(const char* file_name, char *buf, size_t buf_size) { |
| main workhorse | if(file_name) |
| if(file_name[0]=='/' | |
| #ifdef WIN32 | |
| || file_name[0] && file_name[1]==':' | |
| #endif | |
| ){ | |
| 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); | |
| } | |
| else | |
| buf[0]=0; | |
| #ifdef WIN32 | |
| back_slashes_to_slashes(buf); | |
| #endif | |
| } | |
| @todo | static void log_signal(const char* signal_name) { |
| IIS: remove trailing default-document[index.html] from $request.uri. | if(request_info) |
| to do that we need to consult metabase, | SAPI::log(SAPI_info, "%s received while %s.", signal_name, request ? "executing code" : "reading data"); |
| wich is tested but seems slow. | else |
| */ | SAPI::log(SAPI_info, "%s received before or after processing request", signal_name); |
| int main(int argc, char *argv[]) { | } |
| umask(2); | |
| #ifdef WIN32 | #ifdef SIGUSR1 |
| setmode(fileno(stdin), _O_BINARY); | static void SIGUSR1_handler(int /*sig*/){ |
| setmode(fileno(stdout), _O_BINARY); | log_signal("SIGUSR1"); |
| setmode(fileno(stderr), _O_BINARY); | } |
| #endif | #endif |
| // were we started as CGI? | #ifdef SIGPIPE |
| cgi= | #define SIGPIPE_NAME "SIGPIPE" |
| getenv("SERVER_SOFTWARE") || | static const String sigpipe_name(SIGPIPE_NAME); |
| getenv("SERVER_NAME") || | static void SIGPIPE_handler(int /*sig*/){ |
| getenv("GATEWAY_INTERFACE") || | Value* sigpipe=0; |
| getenv("REQUEST_METHOD"); | if(request) |
| sigpipe=request->main_class.get_element(sigpipe_name); | |
| if(!cgi) { | if(sigpipe && sigpipe->as_bool()) |
| if(argc<2) { | log_signal(SIGPIPE_NAME); |
| char *binary=argv[0]; | |
| printf("Usage: %s <file>\n", binary?binary:"parser3"); | execution_canceled=true; |
| exit(1); | if(request) |
| request->set_skip(Request::SKIP_INTERRUPTED); | |
| } | |
| #endif | |
| #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; | |
| } | } |
| return original; | |
| } | |
| char *filespec_to_process=cgi?getenv("PATH_TRANSLATED"):argv[1]; | #define MAYBE_RECONSTRUCT_IIS_STATUS_IN_QS(s) maybe_reconstruct_IIS_status_in_qs(s) |
| #ifdef WIN32 | #else |
| fix_slashes(filespec_to_process); | #define MAYBE_RECONSTRUCT_IIS_STATUS_IN_QS(s) s |
| #endif | #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); | |
| //TODO: initSocks(); | |
| #endif | |
| // init global variables | class RequestController { |
| pa_globals_init(pool); | public: |
| RequestController(Request* r){ | |
| ::request=r; | |
| } | |
| ~RequestController(){ | |
| ::request=0; | |
| } | |
| }; | |
| if(!filespec_to_process) | static bool locate_config(){ |
| PTHROW(0, 0, | if(!config_filespec_cstr) { |
| 0, | config_filespec_cstr=getenv(PARSER_CONFIG_ENV_NAME); |
| "no file to process"); | if(!config_filespec_cstr) |
| config_filespec_cstr=getenv(REDIRECT_PREFIX PARSER_CONFIG_ENV_NAME); | |
| // Request info | if(!config_filespec_cstr){ |
| Request::Info request_info; | // beside by binary |
| if(cgi) { | char beside_binary_path[MAX_STRING]; |
| if(const char *env_document_root=getenv("DOCUMENT_ROOT")) | strncpy(beside_binary_path, argv_all[0], MAX_STRING-1); beside_binary_path[MAX_STRING-1]=0; // filespec of my binary |
| request_info.document_root=env_document_root; | if(!(rsplit(beside_binary_path, '/') || rsplit(beside_binary_path, '\\'))) { // strip filename |
| else if(const char *path_info=getenv("PATH_INFO")) { | // no path, just filename |
| // IIS | // @todo full path, not ./! |
| size_t len=strlen(filespec_to_process)-strlen(path_info); | beside_binary_path[0]='.'; beside_binary_path[1]=0; |
| char *buf=(char *)pool.malloc(len+1); | } |
| strncpy(buf, filespec_to_process, len); | char config_filespec_buf[MAX_STRING]; |
| buf[len]=0; | snprintf(config_filespec_buf, MAX_STRING, "%s/%s", beside_binary_path, AUTO_FILE_NAME); |
| request_info.document_root=buf; | config_filespec_cstr=pa_strdup(config_filespec_buf); |
| } else | return entry_exists(config_filespec_cstr); |
| PTHROW(0, 0, | } |
| 0, | } |
| "CGI: no PATH_INFO defined (in reinventing DOCUMENT_ROOT)"); | return true; |
| } else { | } |
| static char buf[MAX_STRING]; | |
| strncpy(buf, filespec_to_process, MAX_STRING); | /** |
| rsplit(buf, '/'); rsplit(buf, '\\');// strip filename | main workhorse |
| request_info.document_root=buf; | |
| } | @todo |
| request_info.path_translated=filespec_to_process; | IIS: remove trailing default-document[index.html] from $request.uri. |
| request_info.method=request_method; | to do that we need to consult metabase, |
| const char *query_string=getenv("QUERY_STRING"); | wich is tested but seems slow. |
| request_info.query_string=query_string; | */ |
| if(const char *env_request_uri=getenv("REQUEST_URI")) | static void real_parser_handler(const char* filespec_to_process, const char* request_method, bool header_only) { |
| request_info.uri=env_request_uri; | |
| else if (const char *path_info=getenv("PATH_INFO")) { | // init libraries |
| if(query_string) { | pa_globals_init(); |
| char *reconstructed_uri=(char *)malloc( | |
| strlen(path_info)+1/*'?'*/+ | if(!filespec_to_process || !*filespec_to_process) |
| strlen(query_string)+1/*0*/); | SAPI::die("Parser/%s", PARSER_VERSION); |
| // Request info | |
| Request_info request_info; memset(&request_info, 0, sizeof(request_info)); | |
| char document_root_buf[MAX_STRING]; | |
| 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 | |
| if(request_info.query_string && *request_info.query_string) { | |
| char* reconstructed_uri = new(PointerFreeGC) char[strlen(path_info) + 1/*'?'*/+ strlen(request_info.query_string) + 1/*0*/]; | |
| strcpy(reconstructed_uri, path_info); | strcpy(reconstructed_uri, path_info); |
| strcat(reconstructed_uri, "?"); | strcat(reconstructed_uri, "?"); |
| strcat(reconstructed_uri, query_string); | strcat(reconstructed_uri, request_info.query_string); |
| request_info.uri=reconstructed_uri; | request_info.uri = reconstructed_uri; |
| } else | } else |
| request_info.uri=path_info; | request_info.uri = path_info; |
| } else | } |
| PTHROW(0, 0, | } else{ |
| 0, | full_file_spec("", document_root_buf, sizeof(document_root_buf)); |
| "CGI: no PATH_INFO defined (in reinventing REQUEST_URI)"); | request_info.document_root = document_root_buf; |
| request_info.uri = ""; | |
| request_info.content_type=getenv("CONTENT_TYPE"); | } |
| const char *content_length=getenv("CONTENT_LENGTH"); | |
| request_info.content_length=(content_length?atoi(content_length):0); | request_info.content_type = getenv("CONTENT_TYPE"); |
| request_info.cookie=getenv("HTTP_COOKIE"); | const char* content_length = getenv("CONTENT_LENGTH"); |
| request_info.content_length = content_length ? atoi(content_length) : 0; | |
| // prepare to process request | request_info.cookie = getenv("HTTP_COOKIE"); |
| Request request(pool, | request_info.mail_received = mail_received; |
| request_info, | |
| cgi ? String::UL_HTML_TYPO : String::UL_NO | request_info.argv = argv_all; |
| ); | request_info.args_skip = args_skip; |
| // some root-controlled location | // get request_info ptr for signal handlers |
| #ifdef WIN32 | ::request_info = &request_info; |
| // c:\windows | if(execution_canceled) |
| static char root_auto_path[MAX_STRING]; | SAPI::die("Execution canceled"); |
| GetWindowsDirectory(root_auto_path, MAX_STRING); | |
| #ifdef PA_DEBUG_CGI_ENTRY_EXIT | |
| log("request_info: method=%s, uri=%s, q=%s, dr=%s, pt=%s, cookies=%s, cl=%u", | |
| request_info.method, | |
| request_info.uri, | |
| request_info.query_string, | |
| request_info.document_root, | |
| request_info.path_translated, | |
| request_info.cookie, | |
| request_info.content_length); | |
| #endif | |
| // prepare to process request | |
| Request request(SAPI_info, request_info, cgi ? String::Language(String::L_HTML|String::L_OPTIMIZE_BIT) : String::L_AS_IS); | |
| { | |
| // get ::request ptr for signal handlers | |
| RequestController rc(&request); | |
| bool fail_on_config_read_problem=locate_config(); | |
| // process the request | |
| request.core(config_filespec_cstr, fail_on_config_read_problem, header_only); | |
| // ::request cleared in RequestController desctructor 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(const char* filespec_to_process, const char* request_method, bool header_only){ | |
| try { | |
| real_parser_handler(filespec_to_process, request_method, header_only); | |
| } catch(const Exception& e) { | |
| return e; | |
| } | |
| return Exception(); | |
| } | |
| static void call_real_parser_handler__supress_system_exception(const char* filespec_to_process, const char* request_method, bool header_only){ | |
| Exception parser_exception; | |
| LPEXCEPTION_POINTERS system_exception=0; | |
| __try { | |
| parser_exception=call_real_parser_handler__do_PEH_return_it(filespec_to_process, request_method, header_only); | |
| } __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 | |
| throw Exception("system", 0, "<no exception record>"); | |
| else | |
| throw Exception("system", 0, "<no exception information>"); | |
| } | |
| if(parser_exception) | |
| throw Exception(parser_exception); | |
| } | |
| #define REAL_PARSER_HANDLER call_real_parser_handler__supress_system_exception | |
| #else | #else |
| // ~nobody todo: figure out a better place | #define REAL_PARSER_HANDLER real_parser_handler |
| char *root_auto_path=getenv("HOME"); | |
| #endif | #endif |
| static void usage(const char* program) { | |
| printf( | |
| "Parser/%s\n" | |
| "Copyright (c) 2001-2017 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" | |
| " -h Display usage information (this message)\n", | |
| PARSER_VERSION, | |
| program); | |
| exit(EINVAL); | |
| } | |
| int main(int argc, char *argv[]) { | |
| #ifdef PA_DEBUG_CGI_ENTRY_EXIT | |
| log("main: entry"); | |
| #endif | |
| #ifdef SIGUSR1 | |
| if(signal(SIGUSR1, SIGUSR1_handler)==SIG_ERR) | |
| SAPI::die("Can not set handler for SIGUSR1"); | |
| #endif | |
| #ifdef SIGPIPE | |
| if(signal(SIGPIPE, SIGPIPE_handler)==SIG_ERR) | |
| SAPI::die("Can not set handler for SIGPIPE"); | |
| #endif | |
| argv_all=argv; | |
| umask(2); | |
| // were we started as CGI? | |
| cgi=(getenv("SERVER_SOFTWARE") || getenv("SERVER_NAME") || getenv("GATEWAY_INTERFACE") || getenv("REQUEST_METHOD")) && !getenv("PARSER_VERSION"); | |
| char *raw_filespec_to_process; | |
| if(cgi) { | |
| raw_filespec_to_process=getenv("PATH_TRANSLATED"); | |
| if(raw_filespec_to_process && !*raw_filespec_to_process) | |
| raw_filespec_to_process=0; | |
| } 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_cstr=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++; | |
| } | |
| // beside by binary | if (optind > argc - 1) { |
| static char site_auto_path[MAX_STRING]; | fprintf(stderr, "%s: file not specified\n", argv[0]); |
| strncpy(site_auto_path, argv[0], MAX_STRING); // filespec of my binary | usage(argv[0]); |
| rsplit(site_auto_path, '/'); rsplit(site_auto_path, '\\');// strip filename | } |
| raw_filespec_to_process=argv[optind]; | |
| // process the request | args_skip=optind; |
| request.core( | } |
| root_auto_path, false, | |
| site_auto_path, false, | |
| header_only); | |
| // must be last in PTRY{}PCATCH | #ifdef _MSC_VER |
| #ifdef WIN32 | setmode(fileno(stdin), _O_BINARY); |
| SetUnhandledExceptionFilter(0); | setmode(fileno(stdout), _O_BINARY); |
| setmode(fileno(stderr), _O_BINARY); | |
| #endif | #endif |
| // successful finish | |
| return 0; | #if defined(_MSC_VER) && defined(_DEBUG) |
| } PCATCH(e) { // global problem | // Get current flag |
| const char *body=e.comment(); | int tmpFlag = _CrtSetDbgFlag( _CRTDBG_REPORT_FLAG ); |
| int content_length=strlen(body); | |
| // Turn on leak-checking bit | |
| tmpFlag |= _CRTDBG_LEAK_CHECK_DF; | |
| // Set flag to the new value | |
| _CrtSetDbgFlag( tmpFlag ); | |
| _CrtSetReportMode( _CRT_WARN, _CRTDBG_MODE_FILE ); | |
| _CrtSetReportFile( _CRT_WARN, _CRTDBG_FILE_STDERR ); | |
| #endif | |
| char filespec_to_process[MAX_STRING]; | |
| full_file_spec(raw_filespec_to_process, filespec_to_process, sizeof(filespec_to_process)); | |
| const char* request_method=getenv("REQUEST_METHOD"); | |
| bool header_only=request_method && strcasecmp(request_method, "HEAD")==0; | |
| try { // global try | |
| REAL_PARSER_HANDLER(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 | |
| char buf[MAX_STRING]; | |
| snprintf(buf, MAX_STRING, "Unhandled exception %s", e.comment()); | |
| // log it | |
| SAPI::log(SAPI_info, "%s", buf); | |
| // | |
| int content_length=strlen(buf); | |
| // prepare header | // prepare header |
| SAPI::add_header_attribute(pool, "content-type", "text/plain"); | // capitalized headers are used for preventing malloc during capitalization |
| SAPI::add_header_attribute(SAPI_info, HTTP_CONTENT_TYPE_CAPITALIZED, "text/plain"); | |
| // don't use 'format' function because it calls malloc | |
| char content_length_cstr[MAX_NUMBER]; | char content_length_cstr[MAX_NUMBER]; |
| snprintf(content_length_cstr, MAX_NUMBER, "%lu", content_length); | snprintf(content_length_cstr, MAX_NUMBER, "%u", content_length); |
| SAPI::add_header_attribute(pool, "content-length", content_length_cstr); | SAPI::add_header_attribute(SAPI_info, HTTP_CONTENT_LENGTH_CAPITALIZED, content_length_cstr); |
| // send header | // send header |
| SAPI::send_header(pool); | SAPI::send_header(SAPI_info); |
| // body | // send body |
| if(!header_only) | if(!header_only) |
| SAPI::send_body(pool, body, content_length); | SAPI::send_body(SAPI_info, buf, content_length); |
| // unsuccessful finish | // unsuccessful finish |
| return 1; | |
| } | } |
| PEND_CATCH | |
| #ifdef PA_DEBUG_CGI_ENTRY_EXIT | |
| log("main: successful return"); | |
| #endif | |
| return SAPI_info.http_response_code < 100 ? SAPI_info.http_response_code : 0; | |
| } | } |