Annotation of parser3/src/targets/cgi/parser3.C, revision 1.40
1.27 paf 1: /** @file
2: Parser: scripting and CGI main.
3:
1.1 paf 4: Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com)
1.27 paf 5:
1.1 paf 6: Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf)
7:
1.40 ! paf 8: $Id: parser3.C,v 1.39 2001/03/23 11:07:07 paf Exp $
1.1 paf 9: */
10:
1.40 ! paf 11: #include "pa_config_includes.h"
1.3 paf 12:
13: #ifdef WIN32
14: # include <windows.h>
15: #endif
1.27 paf 16:
17: #include <io.h>
1.3 paf 18: #include <stdlib.h>
1.4 paf 19: #include <stdio.h>
20: #include <fcntl.h>
1.3 paf 21:
1.37 paf 22: #include "pa_sapi.h"
1.24 paf 23: #include "pa_common.h"
1.5 paf 24: #include "pa_globals.h"
1.2 paf 25: #include "pa_request.h"
1.1 paf 26:
1.40 ! paf 27: Pool pool; // global pool [dont describe to doxygen: it confuses it with param names]
1.27 paf 28: bool cgi; ///< we were started as CGI?
1.5 paf 29:
1.40 ! paf 30: #ifdef WIN32
! 31: /// global system errors into parser exceptions converter
1.36 paf 32: static LONG WINAPI TopLevelExceptionFilter (struct _EXCEPTION_POINTERS *ExceptionInfo) {
1.5 paf 33: char buf[MAX_STRING];
34: if(ExceptionInfo && ExceptionInfo->ExceptionRecord) {
1.36 paf 35: struct _EXCEPTION_RECORD *er=ExceptionInfo->ExceptionRecord;
1.31 paf 36: snprintf(buf, MAX_STRING, "Exception %#X at %p",
37: er->ExceptionCode,
38: er->ExceptionAddress);
1.5 paf 39: } else
40: strcpy(buf, "Exception <unknown>");
41:
42: PTHROW(0, 0,
43: 0,
44: buf);
45:
46: return EXCEPTION_EXECUTE_HANDLER; // never reached
47: }
1.27 paf 48: #endif
49:
1.40 ! paf 50: #ifdef WIN32
1.30 paf 51: static void fix_slashes(char *s) {
1.27 paf 52: if(s)
53: for(; *s; s++)
54: if(*s=='\\')
55: *s='/';
1.26 paf 56: }
1.40 ! paf 57: #endif
1.3 paf 58:
1.37 paf 59: //@{
60: /// SAPI funcs decl
61: const char *SAPI::get_env(Pool& pool, const char *name) {
1.28 paf 62: return getenv(name);
63: }
64:
1.37 paf 65: uint SAPI::read_post(Pool& pool, char *buf, uint max_bytes) {
1.36 paf 66: uint read_size=0;
1.12 paf 67: do {
1.36 paf 68: int chunk_size=read(fileno(stdin),
69: buf+read_size, min(0x400*0x400, max_bytes-read_size));
1.12 paf 70: if(chunk_size<0)
71: break;
72: read_size+=chunk_size;
73: } while(read_size<max_bytes);
74:
75: return read_size;
1.10 paf 76: }
77:
1.37 paf 78: void SAPI::add_header_attribute(Pool& pool, const char *key, const char *value) {
1.20 paf 79: if(cgi)
80: printf("%s: %s\n", key, value);
1.19 paf 81: }
82:
1.33 paf 83: /// @todo intelligent cache-control
1.37 paf 84: void SAPI::send_header(Pool& pool) {
1.33 paf 85: if(cgi) {
1.36 paf 86: puts("Expires: Fri, 23 Mar 2001 09:32:23 GMT");
1.33 paf 87:
88: // header | body delimiter
1.20 paf 89: puts("");
1.33 paf 90: }
1.30 paf 91: }
1.20 paf 92:
1.37 paf 93: void SAPI::send_body(Pool& pool, const char *buf, size_t size) {
1.19 paf 94: stdout_write(buf, size);
1.17 paf 95: }
1.37 paf 96: //@}
1.30 paf 97:
1.40 ! paf 98: /**
! 99: main workhorse
1.19 paf 100:
1.40 ! paf 101: @todo
! 102: IIS: remove trailing default-document[index.html] from $request.uri.
! 103: to do that we need to consult metabase,
! 104: wich is tested but seems slow.
! 105: */
1.5 paf 106: int main(int argc, char *argv[]) {
1.32 paf 107: umask(2);
108:
109: #ifdef WIN32
1.27 paf 110: setmode(fileno(stdin), _O_BINARY);
111: setmode(fileno(stdout), _O_BINARY);
112: setmode(fileno(stderr), _O_BINARY);
1.32 paf 113: #endif
1.12 paf 114:
1.3 paf 115: // were we started as CGI?
1.20 paf 116: cgi=
1.2 paf 117: getenv("SERVER_SOFTWARE") ||
118: getenv("SERVER_NAME") ||
119: getenv("GATEWAY_INTERFACE") ||
120: getenv("REQUEST_METHOD");
1.5 paf 121:
1.10 paf 122: if(!cgi) {
123: if(argc<2) {
124: char *binary=argv[0];
1.13 paf 125: printf("Usage: %s <file>\n", binary?binary:"parser3");
1.10 paf 126: exit(1);
127: }
128: }
129:
1.26 paf 130: char *filespec_to_process=cgi?getenv("PATH_TRANSLATED"):argv[1];
1.36 paf 131: #ifdef WIN32
1.26 paf 132: fix_slashes(filespec_to_process);
1.36 paf 133: #endif
1.10 paf 134:
1.35 paf 135: const char *request_method=getenv("REQUEST_METHOD");
136: bool header_only=request_method && strcasecmp(request_method, "HEAD")==0;
1.5 paf 137: PTRY { // global try
138: // must be first in PTRY{}PCATCH
1.40 ! paf 139: #ifdef WIN32
1.5 paf 140: SetUnhandledExceptionFilter(&TopLevelExceptionFilter);
141: //TODO: initSocks();
142: #endif
1.2 paf 143:
1.10 paf 144: // init global variables
1.37 paf 145: pa_globals_init(pool);
1.10 paf 146:
1.13 paf 147: if(!filespec_to_process)
148: PTHROW(0, 0,
149: 0,
150: "no file to process");
151:
1.10 paf 152: // Request info
153: Request::Info request_info;
1.39 paf 154: if(cgi) {
155: if(const char *env_document_root=getenv("DOCUMENT_ROOT"))
156: request_info.document_root=env_document_root;
157: else if(const char *path_info=getenv("PATH_INFO")) {
1.40 ! paf 158: // IIS
1.39 paf 159: size_t len=strlen(filespec_to_process)-strlen(path_info);
1.40 ! paf 160: char *buf=(char *)pool.malloc(len+1);
! 161: strncpy(buf, filespec_to_process, len);
1.39 paf 162: buf[len]=0;
163: request_info.document_root=buf;
164: } else
165: PTHROW(0, 0,
166: 0,
167: "CGI: no PATH_INFO defined (in reinventing DOCUMENT_ROOT)");
168: } else {
169: static char buf[MAX_STRING];
170: strncpy(buf, filespec_to_process, MAX_STRING);
171: rsplit(buf, '/'); rsplit(buf, '\\');// strip filename
172: request_info.document_root=buf;
1.13 paf 173: }
1.10 paf 174: request_info.path_translated=filespec_to_process;
1.35 paf 175: request_info.method=request_method;
1.40 ! paf 176: const char *query_string=getenv("QUERY_STRING");
! 177: request_info.query_string=query_string;
! 178: if(const char *env_request_uri=getenv("REQUEST_URI"))
! 179: request_info.uri=env_request_uri;
! 180: else if (const char *path_info=getenv("PATH_INFO")) {
! 181: if(query_string) {
! 182: char *reconstructed_uri=(char *)malloc(
! 183: strlen(path_info)+1/*'?'*/+
! 184: strlen(query_string)+1/*0*/);
! 185: strcpy(reconstructed_uri, path_info);
! 186: strcat(reconstructed_uri, "?");
! 187: strcat(reconstructed_uri, query_string);
! 188: request_info.uri=reconstructed_uri;
! 189: } else
! 190: request_info.uri=path_info;
! 191: } else
! 192: PTHROW(0, 0,
! 193: 0,
! 194: "CGI: no PATH_INFO defined (in reinventing REQUEST_URI)");
! 195:
1.10 paf 196: request_info.content_type=getenv("CONTENT_TYPE");
197: const char *content_length=getenv("CONTENT_LENGTH");
198: request_info.content_length=(content_length?atoi(content_length):0);
1.21 paf 199: request_info.cookie=getenv("HTTP_COOKIE");
1.10 paf 200:
1.5 paf 201: // prepare to process request
1.38 paf 202: Request request(pool,
1.10 paf 203: request_info,
1.27 paf 204: cgi ? String::UL_HTML_TYPO : String::UL_NO
1.5 paf 205: );
206:
207: // some root-controlled location
1.3 paf 208: #ifdef WIN32
1.10 paf 209: // c:\windows
1.36 paf 210: static char root_auto_path[MAX_STRING];
1.30 paf 211: GetWindowsDirectory(root_auto_path, MAX_STRING);
1.3 paf 212: #else
1.40 ! paf 213: // ~nobody todo: figure out a better place
1.36 paf 214: char *root_auto_path=getenv("HOME");
1.5 paf 215: #endif
216:
217: // beside by binary
1.36 paf 218: static char site_auto_path[MAX_STRING];
1.30 paf 219: strncpy(site_auto_path, argv[0], MAX_STRING); // filespec of my binary
220: rsplit(site_auto_path, '/'); rsplit(site_auto_path, '\\');// strip filename
1.5 paf 221:
222: // process the request
1.35 paf 223: request.core(
1.30 paf 224: root_auto_path, false,
1.31 paf 225: site_auto_path, false,
1.35 paf 226: header_only);
1.16 paf 227:
1.22 paf 228: // must be last in PTRY{}PCATCH
1.40 ! paf 229: #ifdef WIN32
1.5 paf 230: SetUnhandledExceptionFilter(0);
1.25 paf 231: #endif
1.16 paf 232: // successful finish
233: return 0;
234: } PCATCH(e) { // global problem
1.19 paf 235: const char *body=e.comment();
236: int content_length=strlen(body);
1.5 paf 237:
1.35 paf 238: // prepare header
1.37 paf 239: SAPI::add_header_attribute(pool, "content-type", "text/plain");
1.19 paf 240: char content_length_cstr[MAX_NUMBER];
1.34 paf 241: snprintf(content_length_cstr, MAX_NUMBER, "%lu", content_length);
1.37 paf 242: SAPI::add_header_attribute(pool, "content-length", content_length_cstr);
1.35 paf 243:
244: // send header
1.37 paf 245: SAPI::send_header(pool);
1.19 paf 246:
247: // body
1.35 paf 248: if(!header_only)
1.37 paf 249: SAPI::send_body(pool, body, content_length);
1.2 paf 250:
1.16 paf 251: // unsuccessful finish
252: return 1;
253: }
254: PEND_CATCH
1.1 paf 255: }
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