Annotation of parser3/src/targets/cgi/parser3.C, revision 1.107
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: */
1.107 ! parser 8: static const char *RCSId="$Id: parser3.C,v 1.106 2001/09/04 15:57:51 parser Exp $";
1.1 paf 9:
1.40 paf 10: #include "pa_config_includes.h"
1.3 paf 11:
12: #ifdef WIN32
13: # include <windows.h>
14: #endif
1.27 paf 15:
1.37 paf 16: #include "pa_sapi.h"
1.76 paf 17: #include "classes.h"
1.24 paf 18: #include "pa_common.h"
1.2 paf 19: #include "pa_request.h"
1.57 paf 20: #include "pa_socks.h"
1.68 paf 21: #include "pa_version.h"
1.69 paf 22:
1.84 parser 23: //#define DEBUG_POOL_MALLOC
24:
25:
1.42 paf 26: /// IIS refuses to read bigger chunks
27: const size_t READ_POST_CHUNK_SIZE=0x400*0x400; // 1M
28:
1.45 paf 29: const char *argv0;
1.42 paf 30: Pool pool(0); // global pool [dont describe to doxygen: it confuses it with param names]
1.27 paf 31: bool cgi; ///< we were started as CGI?
1.5 paf 32:
1.40 paf 33: #ifdef WIN32
34: /// global system errors into parser exceptions converter
1.43 paf 35: static LONG WINAPI TopLevelExceptionFilter(struct _EXCEPTION_POINTERS *ExceptionInfo) {
1.5 paf 36: char buf[MAX_STRING];
37: if(ExceptionInfo && ExceptionInfo->ExceptionRecord) {
1.36 paf 38: struct _EXCEPTION_RECORD *er=ExceptionInfo->ExceptionRecord;
1.46 paf 39: snprintf(buf, MAX_STRING, "Exception 0x%X at %p",
1.31 paf 40: er->ExceptionCode,
41: er->ExceptionAddress);
1.5 paf 42: } else
43: strcpy(buf, "Exception <unknown>");
44:
45: PTHROW(0, 0,
46: 0,
47: buf);
48:
49: return EXCEPTION_EXECUTE_HANDLER; // never reached
50: }
1.27 paf 51: #endif
52:
1.46 paf 53: // SAPI
1.86 parser 54:
55: // appends to parser3.log located beside my binary if openable, to stderr otherwize
1.61 paf 56: void SAPI::log(Pool& pool, const char *fmt, ...) {
57: bool opened;
58: FILE *f=0;
59:
60: if(argv0) {
61: // beside by binary
62: char file_spec[MAX_STRING];
1.98 parser 63: strncpy(file_spec, argv0, MAX_STRING-1); file_spec[MAX_STRING-1]=0; // filespec of my binary
1.61 paf 64: rsplit(file_spec, '/'); rsplit(file_spec, '\\');// strip filename
65: strcat(file_spec, "/parser3.log");
66: f=fopen(file_spec, "at");
67: }
68: opened=f!=0;
69: if(!opened)
70: f=stderr;
71:
72: // prefix
73: time_t t=time(0);
74: const char *stamp=ctime(&t);
75: fprintf(f, "[%.*s] ", strlen(stamp)-1, stamp);
76: // message
77: va_list args;
78: va_start(args,fmt);
79: vfprintf(f, fmt, args);
80: va_end(args);
81: // newline
82: fprintf(f, "\n");
83:
84: if(opened)
85: fclose(f);
1.85 parser 86: else
87: fflush(f);
1.61 paf 88: }
89:
1.107 ! parser 90: static char *_getenv(const char *name) {
! 91: char *result=getenv(name);
! 92: return result && *result ? result : 0;
! 93: }
! 94:
1.37 paf 95: const char *SAPI::get_env(Pool& pool, const char *name) {
1.107 ! parser 96: return _getenv(name);
1.28 paf 97: }
98:
1.59 paf 99: size_t SAPI::read_post(Pool& pool, char *buf, size_t max_bytes) {
100: size_t read_size=0;
1.12 paf 101: do {
1.36 paf 102: int chunk_size=read(fileno(stdin),
1.42 paf 103: buf+read_size, min(READ_POST_CHUNK_SIZE, max_bytes-read_size));
1.12 paf 104: if(chunk_size<0)
105: break;
106: read_size+=chunk_size;
107: } while(read_size<max_bytes);
108:
109: return read_size;
1.10 paf 110: }
111:
1.37 paf 112: void SAPI::add_header_attribute(Pool& pool, const char *key, const char *value) {
1.68 paf 113: if(cgi)
1.20 paf 114: printf("%s: %s\n", key, value);
1.19 paf 115: }
116:
1.56 paf 117: /// @todo intelligent cache-control
1.37 paf 118: void SAPI::send_header(Pool& pool) {
1.33 paf 119: if(cgi) {
1.55 paf 120: puts("expires: Fri, 23 Mar 2001 09:32:23 GMT");
1.33 paf 121:
122: // header | body delimiter
1.20 paf 123: puts("");
1.33 paf 124: }
1.30 paf 125: }
1.20 paf 126:
1.53 paf 127: void SAPI::send_body(Pool& pool, const void *buf, size_t size) {
1.19 paf 128: stdout_write(buf, size);
1.58 paf 129: }
130:
1.97 parser 131: //
132:
133: char *full_file_spec(char *file_name) {
134: if(!strchr(file_name, '/')) {
135: static char cwd[MAX_STRING]; getcwd(cwd, MAX_STRING);
136: static char buf[MAX_STRING];
137: snprintf(buf, MAX_STRING, "%s/%s", cwd, file_name);
138: return buf;
139: }
140: return file_name;
141: }
142:
1.40 paf 143: /**
144: main workhorse
1.19 paf 145:
1.56 paf 146: @todo
1.40 paf 147: IIS: remove trailing default-document[index.html] from $request.uri.
148: to do that we need to consult metabase,
149: wich is tested but seems slow.
150: */
1.5 paf 151: int main(int argc, char *argv[]) {
1.45 paf 152: argv0=argv[0];
153:
1.32 paf 154: umask(2);
155:
1.3 paf 156: // were we started as CGI?
1.20 paf 157: cgi=
1.107 ! parser 158: _getenv("SERVER_SOFTWARE") ||
! 159: _getenv("SERVER_NAME") ||
! 160: _getenv("GATEWAY_INTERFACE") ||
! 161: _getenv("REQUEST_METHOD");
1.5 paf 162:
1.10 paf 163: if(!cgi) {
164: if(argc<2) {
1.69 paf 165: printf(
1.100 parser 166: "Parser/%s Copyright(c) 2001 ArtLebedev Group(http://www.artlebedev.com)\n"
167: "Author: Alexander Petrosyan <paf@design.ru>(http://design.ru/paf)\n"
168: "\n"
169: "Usage: %s <file>\n",
1.69 paf 170: PARSER_VERSION,
171: argv0?argv0:"parser3");
1.67 paf 172: return 1;
1.10 paf 173: }
174: }
175:
1.100 parser 176: #ifdef WIN32
177: setmode(fileno(stdin), _O_BINARY);
178: setmode(fileno(stdout), _O_BINARY);
179: setmode(fileno(stderr), _O_BINARY);
180: #endif
181:
1.107 ! parser 182: char *filespec_to_process=cgi?_getenv("PATH_TRANSLATED"):argv[1];
1.36 paf 183: #ifdef WIN32
1.43 paf 184: back_slashes_to_slashes(filespec_to_process);
1.36 paf 185: #endif
1.97 parser 186: filespec_to_process=full_file_spec(filespec_to_process);
1.10 paf 187:
1.107 ! parser 188: const char *request_method=_getenv("REQUEST_METHOD");
1.35 paf 189: bool header_only=request_method && strcasecmp(request_method, "HEAD")==0;
1.5 paf 190: PTRY { // global try
191: // must be first in PTRY{}PCATCH
1.40 paf 192: #ifdef WIN32
1.5 paf 193: SetUnhandledExceptionFilter(&TopLevelExceptionFilter);
194: #endif
1.2 paf 195:
1.62 paf 196: // init socks
1.57 paf 197: init_socks(pool);
198:
1.73 paf 199: // init global classes
200: init_methoded_array(pool);
1.10 paf 201: // init global variables
1.37 paf 202: pa_globals_init(pool);
1.10 paf 203:
1.13 paf 204: if(!filespec_to_process)
205: PTHROW(0, 0,
206: 0,
1.68 paf 207: "Parser/%s", PARSER_VERSION);
1.13 paf 208:
1.10 paf 209: // Request info
210: Request::Info request_info;
1.39 paf 211: if(cgi) {
1.51 paf 212: if(const char *env_document_root=SAPI::get_env(pool, "DOCUMENT_ROOT"))
1.39 paf 213: request_info.document_root=env_document_root;
1.51 paf 214: else if(const char *path_info=SAPI::get_env(pool, "PATH_INFO")) {
1.40 paf 215: // IIS
1.39 paf 216: size_t len=strlen(filespec_to_process)-strlen(path_info);
1.40 paf 217: char *buf=(char *)pool.malloc(len+1);
1.98 parser 218: memcpy(buf, filespec_to_process, len); buf[len]=0;
1.39 paf 219: request_info.document_root=buf;
220: } else
221: PTHROW(0, 0,
222: 0,
1.43 paf 223: "CGI: no PATH_INFO defined(in reinventing DOCUMENT_ROOT)");
1.39 paf 224: } else {
225: static char buf[MAX_STRING];
1.98 parser 226: strncpy(buf, filespec_to_process, MAX_STRING-1); buf[MAX_STRING-1]=0;
1.70 paf 227: if(rsplit(buf, '/') || rsplit(buf, '\\')) // strip filename
228: request_info.document_root=buf;
229: else
230: request_info.document_root="";
1.13 paf 231: }
1.10 paf 232: request_info.path_translated=filespec_to_process;
1.107 ! parser 233: request_info.method=request_method ? request_method : "GET";
1.51 paf 234: const char *query_string=SAPI::get_env(pool, "QUERY_STRING");
1.40 paf 235: request_info.query_string=query_string;
1.68 paf 236: if(cgi) {
1.51 paf 237: if(const char *env_request_uri=SAPI::get_env(pool, "REQUEST_URI"))
1.42 paf 238: request_info.uri=env_request_uri;
1.51 paf 239: else if(const char *path_info=SAPI::get_env(pool, "PATH_INFO"))
1.42 paf 240: if(query_string) {
241: char *reconstructed_uri=(char *)malloc(
242: strlen(path_info)+1/*'?'*/+
243: strlen(query_string)+1/*0*/);
244: strcpy(reconstructed_uri, path_info);
245: strcat(reconstructed_uri, "?");
246: strcat(reconstructed_uri, query_string);
247: request_info.uri=reconstructed_uri;
248: } else
249: request_info.uri=path_info;
250: else
251: PTHROW(0, 0,
252: 0,
1.43 paf 253: "CGI: no PATH_INFO defined(in reinventing REQUEST_URI)");
1.68 paf 254:
1.72 paf 255: if(const char *script_name=SAPI::get_env(pool, "SCRIPT_NAME")) {
256: size_t script_name_len=strlen(script_name);
257: size_t uri_len=strlen(request_info.uri);
258: if(strncmp(request_info.uri,script_name, script_name_len)==0 &&
259: script_name_len != uri_len) // under IIS they are the same
260: PTHROW(0, 0,
261: 0,
262: "CGI: illegal call");
263: }
1.68 paf 264: } else
1.42 paf 265: request_info.uri=0;
1.40 paf 266:
1.51 paf 267: request_info.content_type=SAPI::get_env(pool, "CONTENT_TYPE");
268: const char *content_length=SAPI::get_env(pool, "CONTENT_LENGTH");
1.10 paf 269: request_info.content_length=(content_length?atoi(content_length):0);
1.51 paf 270: request_info.cookie=SAPI::get_env(pool, "HTTP_COOKIE");
271: request_info.user_agent=SAPI::get_env(pool, "HTTP_USER_AGENT");
1.10 paf 272:
1.5 paf 273: // prepare to process request
1.38 paf 274: Request request(pool,
1.10 paf 275: request_info,
1.91 parser 276: cgi ? String::UL_USER_HTML : String::UL_AS_IS
1.5 paf 277: );
278:
279: // some root-controlled location
1.102 parser 280: #ifdef SYSCONFDIR
281: const char *root_auto_path=SYSCONFDIR;
282: #else
283: # ifdef WIN32
1.10 paf 284: // c:\windows
1.36 paf 285: static char root_auto_path[MAX_STRING];
1.30 paf 286: GetWindowsDirectory(root_auto_path, MAX_STRING);
1.101 parser 287: # else
1.102 parser 288: #error must be compiled either configure/make or MSVC++
1.101 parser 289: # endif
1.5 paf 290: #endif
291:
292: // beside by binary
1.36 paf 293: static char site_auto_path[MAX_STRING];
1.98 parser 294: strncpy(site_auto_path, argv0, MAX_STRING-1); site_auto_path[MAX_STRING-1]=0; // filespec of my binary
1.88 parser 295: if(!(
296: rsplit(site_auto_path, '/') ||
1.89 parser 297: rsplit(site_auto_path, '\\'))) { // strip filename
1.88 parser 298: // no path, just filename
299: site_auto_path[0]='.'; site_auto_path[1]=0;
300: }
1.5 paf 301:
302: // process the request
1.35 paf 303: request.core(
1.30 paf 304: root_auto_path, false,
1.31 paf 305: site_auto_path, false,
1.35 paf 306: header_only);
1.57 paf 307:
308: //
309: done_socks();
1.84 parser 310:
311: #ifdef DEBUG_POOL_MALLOC
1.78 parser 312: extern void log_pool_stats(Pool& pool);
313: log_pool_stats(pool);
1.84 parser 314: #endif
1.16 paf 315:
1.22 paf 316: // must be last in PTRY{}PCATCH
1.40 paf 317: #ifdef WIN32
1.5 paf 318: SetUnhandledExceptionFilter(0);
1.25 paf 319: #endif
1.100 parser 320:
321: #ifndef WIN32
1.96 parser 322: //
323: if(!cgi)
1.100 parser 324: SAPI::send_body(pool, "\n", 1);
325: #endif
1.96 parser 326:
1.16 paf 327: // successful finish
328: return 0;
329: } PCATCH(e) { // global problem
1.43 paf 330: // must be first in PCATCH{}
331: #ifdef WIN32
332: SetUnhandledExceptionFilter(0);
333: #endif
1.44 paf 334: // don't allocate anything on pool here:
335: // possible pool' exception not catch-ed now
336: // and there could be out-of-memory exception
1.43 paf 337:
1.19 paf 338: const char *body=e.comment();
1.44 paf 339: // log it
340: SAPI::log(pool, "exception in request exception handler: %s", body);
341:
342: //
1.19 paf 343: int content_length=strlen(body);
1.5 paf 344:
1.35 paf 345: // prepare header
1.37 paf 346: SAPI::add_header_attribute(pool, "content-type", "text/plain");
1.19 paf 347: char content_length_cstr[MAX_NUMBER];
1.60 paf 348: snprintf(content_length_cstr, MAX_NUMBER, "%u", content_length);
1.37 paf 349: SAPI::add_header_attribute(pool, "content-length", content_length_cstr);
1.35 paf 350:
351: // send header
1.37 paf 352: SAPI::send_header(pool);
1.19 paf 353:
354: // body
1.35 paf 355: if(!header_only)
1.37 paf 356: SAPI::send_body(pool, body, content_length);
1.94 parser 357:
1.100 parser 358: #ifndef WIN32
1.96 parser 359: //
360: if(!cgi)
1.100 parser 361: SAPI::send_body(pool, "\n", 1);
362: #endif
1.96 parser 363:
1.16 paf 364: // unsuccessful finish
365: return 1;
366: }
367: PEND_CATCH
1.1 paf 368: }
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