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| version 1.11, 2001/03/14 17:15:08 | version 1.70, 2001/04/23 10:44:36 |
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| Line 1 | Line 1 |
| /* | /** @file |
| Parser | Parser: scripting and CGI main. |
| Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com) | |
| Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf) | Copyright(c) 2001 ArtLebedev Group(http://www.artlebedev.com) |
| Author: Alexander Petrosyan <paf@design.ru>(http://design.ru/paf) | |
| $Id$ | $Id$ |
| */ | */ |
| #ifdef HAVE_CONFIG_H | #include "pa_config_includes.h" |
| # include "pa_config.h" | |
| #endif | |
| #ifdef WIN32 | #ifdef WIN32 |
| # include <windows.h> | # include <windows.h> |
| # include <io.h> | |
| #endif | #endif |
| #include <stdlib.h> | |
| #include <stdio.h> | |
| #include <string.h> | |
| #include <fcntl.h> | |
| #include "pa_sapi.h" | |
| #include "pa_common.h" | |
| #include "pa_globals.h" | #include "pa_globals.h" |
| #include "pa_request.h" | #include "pa_request.h" |
| #include "pa_common.h" | #include "pa_socks.h" |
| #include "pa_version.h" | |
| /// @test scripting #!/path/to/parser | |
| Pool pool; // global pool | /// 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 | #ifdef WIN32 |
| # if MSVC | /// global system errors into parser exceptions converter |
| // intercept global system errors | static LONG WINAPI TopLevelExceptionFilter(struct _EXCEPTION_POINTERS *ExceptionInfo) { |
| LONG WINAPI TopLevelExceptionFilter ( | |
| struct _EXCEPTION_POINTERS *ExceptionInfo | |
| ) { | |
| char buf[MAX_STRING]; | char buf[MAX_STRING]; |
| if(ExceptionInfo && ExceptionInfo->ExceptionRecord) { | if(ExceptionInfo && ExceptionInfo->ExceptionRecord) { |
| struct _EXCEPTION_RECORD *r=ExceptionInfo->ExceptionRecord; | struct _EXCEPTION_RECORD *er=ExceptionInfo->ExceptionRecord; |
| snprintf(buf, MAX_STRING, "Exception 0x%X at %p", | |
| int printed=0; | er->ExceptionCode, |
| printed+=snprintf(buf+printed, MAX_STRING-printed, "Exception 0x%X at 0x%p", | er->ExceptionAddress); |
| r->ExceptionCode, | |
| r->ExceptionAddress); | |
| for(unsigned int i=0; i<r->NumberParameters; i++) | |
| printed+=snprintf(buf+printed, MAX_STRING-printed, ", 0x%X", | |
| r->ExceptionInformation[i]); | |
| } else | } else |
| strcpy(buf, "Exception <unknown>"); | strcpy(buf, "Exception <unknown>"); |
| Line 52 LONG WINAPI TopLevelExceptionFilter ( | Line 48 LONG WINAPI TopLevelExceptionFilter ( |
| return EXCEPTION_EXECUTE_HANDLER; // never reached | return EXCEPTION_EXECUTE_HANDLER; // never reached |
| } | } |
| # endif | |
| #endif | #endif |
| size_t read_post(char *&buf, size_t max_bytes) { | // SAPI |
| return 0; | // 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<max_bytes); | |
| return read_size; | |
| } | |
| void SAPI::add_header_attribute(Pool& pool, const char *key, const char *value) { | |
| if(cgi) | |
| printf("%s: %s\n", key, value); | |
| } | |
| /// @todo intelligent cache-control | |
| void SAPI::send_header(Pool& pool) { | |
| if(cgi) { | |
| puts("expires: Fri, 23 Mar 2001 09:32:23 GMT"); | |
| // header | body delimiter | |
| puts(""); | |
| } | |
| } | } |
| void SAPI::send_body(Pool& pool, const void *buf, size_t size) { | |
| stdout_write(buf, size); | |
| } | |
| /** | |
| main workhorse | |
| @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. | |
| */ | |
| int main(int argc, char *argv[]) { | int main(int argc, char *argv[]) { |
| // Service funcs | argv0=argv[0]; |
| service_funcs.read_post=read_post; | |
| umask(2); | |
| #ifdef WIN32 | |
| setmode(fileno(stdin), _O_BINARY); | |
| setmode(fileno(stdout), _O_BINARY); | |
| setmode(fileno(stderr), _O_BINARY); | |
| #endif | |
| // were we started as CGI? | // were we started as CGI? |
| bool cgi= | cgi= |
| getenv("SERVER_SOFTWARE") || | getenv("SERVER_SOFTWARE") || |
| getenv("SERVER_NAME") || | getenv("SERVER_NAME") || |
| getenv("GATEWAY_INTERFACE") || | getenv("GATEWAY_INTERFACE") || |
| Line 72 int main(int argc, char *argv[]) { | Line 148 int main(int argc, char *argv[]) { |
| if(!cgi) { | if(!cgi) { |
| if(argc<2) { | if(argc<2) { |
| char *binary=argv[0]; | printf( |
| char *name=rsplit(binary, PATH_DELIMITER_CHAR); | "Parser/%s Copyright(c) 2001 ArtLebedev Group(http://www.artlebedev.com)\n" |
| printf("Usage: %s <file>\n", name?name:"parser3"); | "Author: Alexander Petrosyan <paf@design.ru>(http://design.ru/paf)\n" |
| exit(1); | "\n" |
| "Usage: %s <file>\n", | |
| PARSER_VERSION, | |
| argv0?argv0:"parser3"); | |
| return 1; | |
| } | } |
| } | } |
| const char *filespec_to_process=cgi?getenv("PATH_TRANSLATED"):argv[1]; | char *filespec_to_process=cgi?getenv("PATH_TRANSLATED"):argv[1]; |
| #ifdef WIN32 | |
| back_slashes_to_slashes(filespec_to_process); | |
| #endif | |
| char *result; char error[MAX_STRING]; error[0]=0; | const char *request_method=getenv("REQUEST_METHOD"); |
| bool header_only=request_method && strcasecmp(request_method, "HEAD")==0; | |
| PTRY { // global try | PTRY { // global try |
| // must be first in PTRY{}PCATCH | // must be first in PTRY{}PCATCH |
| #ifdef WIN32 | #ifdef WIN32 |
| # if MSVC | |
| SetUnhandledExceptionFilter(&TopLevelExceptionFilter); | SetUnhandledExceptionFilter(&TopLevelExceptionFilter); |
| //TODO: initSocks(); | |
| # endif | |
| #endif | #endif |
| // init socks | |
| init_socks(pool); | |
| // init global variables | // init global variables |
| globals_init(pool); | pa_globals_init(pool); |
| if(!filespec_to_process) | |
| PTHROW(0, 0, | |
| 0, | |
| "Parser/%s", PARSER_VERSION); | |
| // Request info | // Request info |
| // TODO: ifdef WIN32 flip \\ to / | |
| Request::Info request_info; | Request::Info request_info; |
| request_info.document_root="Y:/parser3/src/"; | 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.path_translated=filespec_to_process; |
| request_info.request_method=getenv("REQUEST_METHOD"); | request_info.method=request_method; |
| request_info.query_string=getenv("QUERY_STRING"); | const char *query_string=SAPI::get_env(pool, "QUERY_STRING"); |
| request_info.request_uri=getenv("REQUEST_URI"); | request_info.query_string=query_string; |
| request_info.content_type=getenv("CONTENT_TYPE"); | if(cgi) { |
| const char *content_length=getenv("CONTENT_LENGTH"); | 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)"); | |
| const char *script_name=SAPI::get_env(pool, "SCRIPT_NAME"); | |
| if(script_name && | |
| strncmp(request_info.uri,script_name, strlen(script_name))==0) | |
| 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.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 | // prepare to process request |
| Request request(Pool(), | Request request(pool, |
| request_info, | request_info, |
| cgi ? String::Untaint_lang::HTML_TYPO : String::Untaint_lang::NO | cgi ? String::UL_HTML_TYPO : String::UL_AS_IS |
| ); | ); |
| // some root-controlled location | // some root-controlled location |
| char *sys_auto_path1; | |
| #ifdef WIN32 | #ifdef WIN32 |
| // c:\windows | // c:\windows |
| sys_auto_path1=(char *)pool.malloc(MAX_STRING); | static char root_auto_path[MAX_STRING]; |
| GetWindowsDirectory(sys_auto_path1, MAX_STRING); | GetWindowsDirectory(root_auto_path, MAX_STRING); |
| strcat(sys_auto_path1, PATH_DELIMITER_STRING); | |
| #else | #else |
| // ~nobody | // ~nobody todo: figure out a better place |
| sys_auto_path1=getenv("HOME"); | const char *root_auto_path=SAPI::get_env(pool, "HOME"); |
| #endif | #endif |
| // beside by binary | // beside by binary |
| char *sys_auto_path2=(char *)pool.malloc(MAX_STRING); | static char site_auto_path[MAX_STRING]; |
| strncpy(sys_auto_path2, argv[0], MAX_STRING); // filespec of my binary | strncpy(site_auto_path, argv[0], MAX_STRING); // filespec of my binary |
| rsplit(sys_auto_path2, PATH_DELIMITER_CHAR); // strip filename | rsplit(site_auto_path, '/'); rsplit(site_auto_path, '\\');// strip filename |
| // process the request | // process the request |
| result=request.core( | request.core( |
| sys_auto_path1, | root_auto_path, false, |
| sys_auto_path2); | site_auto_path, false, |
| // set error, will be reported in case result==0 | header_only); |
| strcpy(error, "exception occured in request exception handler"); | |
| // | |
| done_socks(); | |
| // must be last in PTRY{}PCATCH | // must be last in PTRY{}PCATCH |
| #ifdef WIN32 | #ifdef WIN32 |
| # if MSVC | |
| SetUnhandledExceptionFilter(0); | SetUnhandledExceptionFilter(0); |
| # endif | |
| #endif | #endif |
| } PCATCH(e) { // global problem @globals fill @Request create @prepare to .core() | // successful finish |
| result=0; | return 0; |
| strcpy(error, e.comment()); | } 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); | |
| // body | |
| if(!header_only) | |
| SAPI::send_body(pool, body, content_length); | |
| // unsuccessful finish | |
| return 1; | |
| } | } |
| PEND_CATCH | PEND_CATCH |
| // write out the result | |
| if(cgi) { | |
| if(result) { | |
| const char *content_type="text/html"; | |
| printf( | |
| "Content-type: %s\n" | |
| "Content-length: %d\n" | |
| "\n", | |
| content_type, | |
| strlen(result)); | |
| stdout_write(result); | |
| } else { | |
| printf( | |
| "Content-type: text/plain\n" | |
| "Content-length: %d\n" | |
| "\n", | |
| strlen(error)); | |
| stdout_write(error); | |
| } | |
| } else | |
| if(result) | |
| printf("%s", result); | |
| else | |
| fputs(error, stderr); | |
| return 0; | |
| } | } |