Annotation of parser3/src/targets/cgi/parser3.C, revision 1.45
1.27 paf 1: /** @file
2: Parser: scripting and CGI main.
3:
1.43 paf 4: Copyright(c) 2001 ArtLebedev Group(http://www.artlebedev.com)
1.27 paf 5:
1.43 paf 6: Author: Alexander Petrosyan <paf@design.ru>(http://design.ru/paf)
1.1 paf 7:
1.45 ! paf 8: $Id: parser3.C,v 1.44 2001/03/24 14:31:01 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>
1.45 ! paf 21: #include <time.h>
1.3 paf 22:
1.37 paf 23: #include "pa_sapi.h"
1.24 paf 24: #include "pa_common.h"
1.5 paf 25: #include "pa_globals.h"
1.2 paf 26: #include "pa_request.h"
1.1 paf 27:
1.42 paf 28: /// IIS refuses to read bigger chunks
29: const size_t READ_POST_CHUNK_SIZE=0x400*0x400; // 1M
30:
1.45 ! paf 31: const char *argv0;
1.42 paf 32: Pool pool(0); // global pool [dont describe to doxygen: it confuses it with param names]
1.27 paf 33: bool cgi; ///< we were started as CGI?
1.5 paf 34:
1.40 paf 35: #ifdef WIN32
36: /// global system errors into parser exceptions converter
1.43 paf 37: static LONG WINAPI TopLevelExceptionFilter(struct _EXCEPTION_POINTERS *ExceptionInfo) {
1.5 paf 38: char buf[MAX_STRING];
39: if(ExceptionInfo && ExceptionInfo->ExceptionRecord) {
1.36 paf 40: struct _EXCEPTION_RECORD *er=ExceptionInfo->ExceptionRecord;
1.31 paf 41: snprintf(buf, MAX_STRING, "Exception %#X at %p",
42: er->ExceptionCode,
43: er->ExceptionAddress);
1.5 paf 44: } else
45: strcpy(buf, "Exception <unknown>");
46:
47: PTHROW(0, 0,
48: 0,
49: buf);
50:
51: return EXCEPTION_EXECUTE_HANDLER; // never reached
52: }
1.27 paf 53: #endif
54:
1.37 paf 55: //@{
56: /// SAPI funcs decl
57: const char *SAPI::get_env(Pool& pool, const char *name) {
1.28 paf 58: return getenv(name);
59: }
60:
1.37 paf 61: uint SAPI::read_post(Pool& pool, char *buf, uint max_bytes) {
1.36 paf 62: uint read_size=0;
1.12 paf 63: do {
1.36 paf 64: int chunk_size=read(fileno(stdin),
1.42 paf 65: buf+read_size, min(READ_POST_CHUNK_SIZE, max_bytes-read_size));
1.12 paf 66: if(chunk_size<0)
67: break;
68: read_size+=chunk_size;
69: } while(read_size<max_bytes);
70:
71: return read_size;
1.10 paf 72: }
73:
1.37 paf 74: void SAPI::add_header_attribute(Pool& pool, const char *key, const char *value) {
1.20 paf 75: if(cgi)
76: printf("%s: %s\n", key, value);
1.19 paf 77: }
78:
1.33 paf 79: /// @todo intelligent cache-control
1.37 paf 80: void SAPI::send_header(Pool& pool) {
1.33 paf 81: if(cgi) {
1.41 paf 82: puts("expires: Fri, 23 Mar 2001 09:32:23 GMT");
1.33 paf 83:
84: // header | body delimiter
1.20 paf 85: puts("");
1.33 paf 86: }
1.30 paf 87: }
1.20 paf 88:
1.37 paf 89: void SAPI::send_body(Pool& pool, const char *buf, size_t size) {
1.19 paf 90: stdout_write(buf, size);
1.17 paf 91: }
1.44 paf 92:
1.45 ! paf 93: /// appends to parser3.log located beside my binary
1.44 paf 94: void SAPI::log(Pool& pool, const char *fmt, ...) {
1.45 ! paf 95: bool opened;
! 96: FILE *f=0;
! 97:
! 98: if(argv0) {
! 99: // beside by binary
! 100: char file_spec[MAX_STRING];
! 101: strncpy(file_spec, argv0, MAX_STRING); // filespec of my binary
! 102: rsplit(file_spec, '/'); rsplit(file_spec, '\\');// strip filename
! 103: strcat(file_spec, "/parser3.log");
! 104: f=fopen(file_spec, "at");
! 105: }
! 106: opened=f!=0;
! 107: if(!opened)
! 108: f=stderr;
! 109:
! 110: // prefix
! 111: time_t t=time(0);
! 112: const char *stamp=ctime(&t);
! 113: fprintf(f, "[%.*s] ", strlen(stamp)-1, stamp);
! 114: // message
! 115: va_list args;
! 116: va_start(args,fmt);
! 117: vfprintf(f, fmt, args);
! 118: va_end(args);
! 119: // newline
! 120: fprintf(f, "\n");
! 121:
! 122: if(opened)
1.44 paf 123: fclose(f);
124: }
1.37 paf 125: //@}
1.30 paf 126:
1.40 paf 127: /**
128: main workhorse
1.19 paf 129:
1.40 paf 130: @todo
131: IIS: remove trailing default-document[index.html] from $request.uri.
132: to do that we need to consult metabase,
133: wich is tested but seems slow.
134: */
1.5 paf 135: int main(int argc, char *argv[]) {
1.45 ! paf 136: argv0=argv[0];
! 137:
1.32 paf 138: umask(2);
139:
140: #ifdef WIN32
1.27 paf 141: setmode(fileno(stdin), _O_BINARY);
142: setmode(fileno(stdout), _O_BINARY);
143: setmode(fileno(stderr), _O_BINARY);
1.32 paf 144: #endif
1.12 paf 145:
1.3 paf 146: // were we started as CGI?
1.20 paf 147: cgi=
1.2 paf 148: getenv("SERVER_SOFTWARE") ||
149: getenv("SERVER_NAME") ||
150: getenv("GATEWAY_INTERFACE") ||
151: getenv("REQUEST_METHOD");
1.5 paf 152:
1.10 paf 153: if(!cgi) {
154: if(argc<2) {
1.45 ! paf 155: printf("Usage: %s <file>\n", argv0?argv0:"parser3");
1.10 paf 156: exit(1);
157: }
158: }
159:
1.26 paf 160: char *filespec_to_process=cgi?getenv("PATH_TRANSLATED"):argv[1];
1.36 paf 161: #ifdef WIN32
1.43 paf 162: back_slashes_to_slashes(filespec_to_process);
1.36 paf 163: #endif
1.10 paf 164:
1.35 paf 165: const char *request_method=getenv("REQUEST_METHOD");
166: bool header_only=request_method && strcasecmp(request_method, "HEAD")==0;
1.5 paf 167: PTRY { // global try
168: // must be first in PTRY{}PCATCH
1.40 paf 169: #ifdef WIN32
1.5 paf 170: SetUnhandledExceptionFilter(&TopLevelExceptionFilter);
171: //TODO: initSocks();
172: #endif
1.2 paf 173:
1.10 paf 174: // init global variables
1.37 paf 175: pa_globals_init(pool);
1.10 paf 176:
1.13 paf 177: if(!filespec_to_process)
178: PTHROW(0, 0,
179: 0,
180: "no file to process");
181:
1.10 paf 182: // Request info
183: Request::Info request_info;
1.39 paf 184: if(cgi) {
185: if(const char *env_document_root=getenv("DOCUMENT_ROOT"))
186: request_info.document_root=env_document_root;
187: else if(const char *path_info=getenv("PATH_INFO")) {
1.40 paf 188: // IIS
1.39 paf 189: size_t len=strlen(filespec_to_process)-strlen(path_info);
1.40 paf 190: char *buf=(char *)pool.malloc(len+1);
191: strncpy(buf, filespec_to_process, len);
1.39 paf 192: buf[len]=0;
193: request_info.document_root=buf;
194: } else
195: PTHROW(0, 0,
196: 0,
1.43 paf 197: "CGI: no PATH_INFO defined(in reinventing DOCUMENT_ROOT)");
1.39 paf 198: } else {
199: static char buf[MAX_STRING];
200: strncpy(buf, filespec_to_process, MAX_STRING);
201: rsplit(buf, '/'); rsplit(buf, '\\');// strip filename
202: request_info.document_root=buf;
1.13 paf 203: }
1.10 paf 204: request_info.path_translated=filespec_to_process;
1.35 paf 205: request_info.method=request_method;
1.40 paf 206: const char *query_string=getenv("QUERY_STRING");
207: request_info.query_string=query_string;
1.42 paf 208: if(cgi)
209: if(const char *env_request_uri=getenv("REQUEST_URI"))
210: request_info.uri=env_request_uri;
1.43 paf 211: else if(const char *path_info=getenv("PATH_INFO"))
1.42 paf 212: if(query_string) {
213: char *reconstructed_uri=(char *)malloc(
214: strlen(path_info)+1/*'?'*/+
215: strlen(query_string)+1/*0*/);
216: strcpy(reconstructed_uri, path_info);
217: strcat(reconstructed_uri, "?");
218: strcat(reconstructed_uri, query_string);
219: request_info.uri=reconstructed_uri;
220: } else
221: request_info.uri=path_info;
222: else
223: PTHROW(0, 0,
224: 0,
1.43 paf 225: "CGI: no PATH_INFO defined(in reinventing REQUEST_URI)");
1.42 paf 226: else
227: request_info.uri=0;
1.40 paf 228:
1.10 paf 229: request_info.content_type=getenv("CONTENT_TYPE");
230: const char *content_length=getenv("CONTENT_LENGTH");
231: request_info.content_length=(content_length?atoi(content_length):0);
1.21 paf 232: request_info.cookie=getenv("HTTP_COOKIE");
1.10 paf 233:
1.5 paf 234: // prepare to process request
1.38 paf 235: Request request(pool,
1.10 paf 236: request_info,
1.27 paf 237: cgi ? String::UL_HTML_TYPO : String::UL_NO
1.5 paf 238: );
239:
240: // some root-controlled location
1.3 paf 241: #ifdef WIN32
1.10 paf 242: // c:\windows
1.36 paf 243: static char root_auto_path[MAX_STRING];
1.30 paf 244: GetWindowsDirectory(root_auto_path, MAX_STRING);
1.3 paf 245: #else
1.40 paf 246: // ~nobody todo: figure out a better place
1.36 paf 247: char *root_auto_path=getenv("HOME");
1.5 paf 248: #endif
249:
250: // beside by binary
1.36 paf 251: static char site_auto_path[MAX_STRING];
1.30 paf 252: strncpy(site_auto_path, argv[0], MAX_STRING); // filespec of my binary
253: rsplit(site_auto_path, '/'); rsplit(site_auto_path, '\\');// strip filename
1.5 paf 254:
255: // process the request
1.35 paf 256: request.core(
1.30 paf 257: root_auto_path, false,
1.31 paf 258: site_auto_path, false,
1.35 paf 259: header_only);
1.16 paf 260:
1.22 paf 261: // must be last in PTRY{}PCATCH
1.40 paf 262: #ifdef WIN32
1.5 paf 263: SetUnhandledExceptionFilter(0);
1.25 paf 264: #endif
1.16 paf 265: // successful finish
266: return 0;
267: } PCATCH(e) { // global problem
1.43 paf 268: // must be first in PCATCH{}
269: #ifdef WIN32
270: SetUnhandledExceptionFilter(0);
271: #endif
1.44 paf 272: // don't allocate anything on pool here:
273: // possible pool' exception not catch-ed now
274: // and there could be out-of-memory exception
1.43 paf 275:
1.19 paf 276: const char *body=e.comment();
1.44 paf 277: // log it
278: SAPI::log(pool, "exception in request exception handler: %s", body);
279:
280: //
1.19 paf 281: int content_length=strlen(body);
1.5 paf 282:
1.35 paf 283: // prepare header
1.37 paf 284: SAPI::add_header_attribute(pool, "content-type", "text/plain");
1.19 paf 285: char content_length_cstr[MAX_NUMBER];
1.34 paf 286: snprintf(content_length_cstr, MAX_NUMBER, "%lu", content_length);
1.37 paf 287: SAPI::add_header_attribute(pool, "content-length", content_length_cstr);
1.35 paf 288:
289: // send header
1.37 paf 290: SAPI::send_header(pool);
1.19 paf 291:
292: // body
1.35 paf 293: if(!header_only)
1.37 paf 294: SAPI::send_body(pool, body, content_length);
1.2 paf 295:
1.16 paf 296: // unsuccessful finish
297: return 1;
298: }
299: PEND_CATCH
1.1 paf 300: }
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