Annotation of parser3/src/targets/cgi/parser3.C, revision 1.103
1.103 ! parser 1: //2
1.27 paf 2: /** @file
3: Parser: scripting and CGI main.
4:
1.43 paf 5: Copyright(c) 2001 ArtLebedev Group(http://www.artlebedev.com)
1.27 paf 6:
1.43 paf 7: Author: Alexander Petrosyan <paf@design.ru>(http://design.ru/paf)
1.1 paf 8: */
1.103 ! parser 9: static const char *RCSId="$Id: parser3.C,v 1.102 2001/09/04 07:02:33 parser Exp $";
1.1 paf 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:
1.37 paf 17: #include "pa_sapi.h"
1.76 paf 18: #include "classes.h"
1.24 paf 19: #include "pa_common.h"
1.2 paf 20: #include "pa_request.h"
1.57 paf 21: #include "pa_socks.h"
1.68 paf 22: #include "pa_version.h"
1.69 paf 23:
1.84 parser 24: //#define DEBUG_POOL_MALLOC
25:
26:
1.42 paf 27: /// IIS refuses to read bigger chunks
28: const size_t READ_POST_CHUNK_SIZE=0x400*0x400; // 1M
29:
1.45 paf 30: const char *argv0;
1.42 paf 31: Pool pool(0); // global pool [dont describe to doxygen: it confuses it with param names]
1.27 paf 32: bool cgi; ///< we were started as CGI?
1.5 paf 33:
1.40 paf 34: #ifdef WIN32
35: /// global system errors into parser exceptions converter
1.43 paf 36: static LONG WINAPI TopLevelExceptionFilter(struct _EXCEPTION_POINTERS *ExceptionInfo) {
1.5 paf 37: char buf[MAX_STRING];
38: if(ExceptionInfo && ExceptionInfo->ExceptionRecord) {
1.36 paf 39: struct _EXCEPTION_RECORD *er=ExceptionInfo->ExceptionRecord;
1.46 paf 40: snprintf(buf, MAX_STRING, "Exception 0x%X at %p",
1.31 paf 41: er->ExceptionCode,
42: er->ExceptionAddress);
1.5 paf 43: } else
44: strcpy(buf, "Exception <unknown>");
45:
46: PTHROW(0, 0,
47: 0,
48: buf);
49:
50: return EXCEPTION_EXECUTE_HANDLER; // never reached
51: }
1.27 paf 52: #endif
53:
1.46 paf 54: // SAPI
1.86 parser 55:
56: // appends to parser3.log located beside my binary if openable, to stderr otherwize
1.61 paf 57: void SAPI::log(Pool& pool, const char *fmt, ...) {
58: bool opened;
59: FILE *f=0;
60:
61: if(argv0) {
62: // beside by binary
63: char file_spec[MAX_STRING];
1.98 parser 64: strncpy(file_spec, argv0, MAX_STRING-1); file_spec[MAX_STRING-1]=0; // filespec of my binary
1.61 paf 65: rsplit(file_spec, '/'); rsplit(file_spec, '\\');// strip filename
66: strcat(file_spec, "/parser3.log");
67: f=fopen(file_spec, "at");
68: }
69: opened=f!=0;
70: if(!opened)
71: f=stderr;
72:
73: // prefix
74: time_t t=time(0);
75: const char *stamp=ctime(&t);
76: fprintf(f, "[%.*s] ", strlen(stamp)-1, stamp);
77: // message
78: va_list args;
79: va_start(args,fmt);
80: vfprintf(f, fmt, args);
81: va_end(args);
82: // newline
83: fprintf(f, "\n");
84:
85: if(opened)
86: fclose(f);
1.85 parser 87: else
88: fflush(f);
1.61 paf 89: }
90:
1.37 paf 91: const char *SAPI::get_env(Pool& pool, const char *name) {
1.28 paf 92: return getenv(name);
93: }
94:
1.59 paf 95: size_t SAPI::read_post(Pool& pool, char *buf, size_t max_bytes) {
96: size_t read_size=0;
1.12 paf 97: do {
1.36 paf 98: int chunk_size=read(fileno(stdin),
1.42 paf 99: buf+read_size, min(READ_POST_CHUNK_SIZE, max_bytes-read_size));
1.12 paf 100: if(chunk_size<0)
101: break;
102: read_size+=chunk_size;
103: } while(read_size<max_bytes);
104:
105: return read_size;
1.10 paf 106: }
107:
1.37 paf 108: void SAPI::add_header_attribute(Pool& pool, const char *key, const char *value) {
1.68 paf 109: if(cgi)
1.20 paf 110: printf("%s: %s\n", key, value);
1.19 paf 111: }
112:
1.56 paf 113: /// @todo intelligent cache-control
1.37 paf 114: void SAPI::send_header(Pool& pool) {
1.33 paf 115: if(cgi) {
1.55 paf 116: puts("expires: Fri, 23 Mar 2001 09:32:23 GMT");
1.33 paf 117:
118: // header | body delimiter
1.20 paf 119: puts("");
1.33 paf 120: }
1.30 paf 121: }
1.20 paf 122:
1.53 paf 123: void SAPI::send_body(Pool& pool, const void *buf, size_t size) {
1.19 paf 124: stdout_write(buf, size);
1.58 paf 125: }
126:
1.97 parser 127: //
128:
129: char *full_file_spec(char *file_name) {
130: if(!strchr(file_name, '/')) {
131: static char cwd[MAX_STRING]; getcwd(cwd, MAX_STRING);
132: static char buf[MAX_STRING];
133: snprintf(buf, MAX_STRING, "%s/%s", cwd, file_name);
134: return buf;
135: }
136: return file_name;
137: }
138:
1.40 paf 139: /**
140: main workhorse
1.19 paf 141:
1.56 paf 142: @todo
1.40 paf 143: IIS: remove trailing default-document[index.html] from $request.uri.
144: to do that we need to consult metabase,
145: wich is tested but seems slow.
146: */
1.5 paf 147: int main(int argc, char *argv[]) {
1.45 paf 148: argv0=argv[0];
149:
1.32 paf 150: umask(2);
151:
1.3 paf 152: // were we started as CGI?
1.20 paf 153: cgi=
1.2 paf 154: getenv("SERVER_SOFTWARE") ||
155: getenv("SERVER_NAME") ||
156: getenv("GATEWAY_INTERFACE") ||
157: getenv("REQUEST_METHOD");
1.5 paf 158:
1.10 paf 159: if(!cgi) {
160: if(argc<2) {
1.69 paf 161: printf(
1.100 parser 162: "Parser/%s Copyright(c) 2001 ArtLebedev Group(http://www.artlebedev.com)\n"
163: "Author: Alexander Petrosyan <paf@design.ru>(http://design.ru/paf)\n"
164: "\n"
165: "Usage: %s <file>\n",
1.69 paf 166: PARSER_VERSION,
167: argv0?argv0:"parser3");
1.67 paf 168: return 1;
1.10 paf 169: }
170: }
171:
1.100 parser 172: #ifdef WIN32
173: setmode(fileno(stdin), _O_BINARY);
174: setmode(fileno(stdout), _O_BINARY);
175: setmode(fileno(stderr), _O_BINARY);
176: #endif
177:
1.26 paf 178: char *filespec_to_process=cgi?getenv("PATH_TRANSLATED"):argv[1];
1.36 paf 179: #ifdef WIN32
1.43 paf 180: back_slashes_to_slashes(filespec_to_process);
1.36 paf 181: #endif
1.97 parser 182: filespec_to_process=full_file_spec(filespec_to_process);
1.10 paf 183:
1.35 paf 184: const char *request_method=getenv("REQUEST_METHOD");
185: bool header_only=request_method && strcasecmp(request_method, "HEAD")==0;
1.5 paf 186: PTRY { // global try
187: // must be first in PTRY{}PCATCH
1.40 paf 188: #ifdef WIN32
1.5 paf 189: SetUnhandledExceptionFilter(&TopLevelExceptionFilter);
190: #endif
1.2 paf 191:
1.62 paf 192: // init socks
1.57 paf 193: init_socks(pool);
194:
1.73 paf 195: // init global classes
196: init_methoded_array(pool);
1.10 paf 197: // init global variables
1.37 paf 198: pa_globals_init(pool);
1.10 paf 199:
1.13 paf 200: if(!filespec_to_process)
201: PTHROW(0, 0,
202: 0,
1.68 paf 203: "Parser/%s", PARSER_VERSION);
1.13 paf 204:
1.10 paf 205: // Request info
206: Request::Info request_info;
1.39 paf 207: if(cgi) {
1.51 paf 208: if(const char *env_document_root=SAPI::get_env(pool, "DOCUMENT_ROOT"))
1.39 paf 209: request_info.document_root=env_document_root;
1.51 paf 210: else if(const char *path_info=SAPI::get_env(pool, "PATH_INFO")) {
1.40 paf 211: // IIS
1.39 paf 212: size_t len=strlen(filespec_to_process)-strlen(path_info);
1.40 paf 213: char *buf=(char *)pool.malloc(len+1);
1.98 parser 214: memcpy(buf, filespec_to_process, len); buf[len]=0;
1.39 paf 215: request_info.document_root=buf;
216: } else
217: PTHROW(0, 0,
218: 0,
1.43 paf 219: "CGI: no PATH_INFO defined(in reinventing DOCUMENT_ROOT)");
1.39 paf 220: } else {
221: static char buf[MAX_STRING];
1.98 parser 222: strncpy(buf, filespec_to_process, MAX_STRING-1); buf[MAX_STRING-1]=0;
1.70 paf 223: if(rsplit(buf, '/') || rsplit(buf, '\\')) // strip filename
224: request_info.document_root=buf;
225: else
226: request_info.document_root="";
1.13 paf 227: }
1.10 paf 228: request_info.path_translated=filespec_to_process;
1.35 paf 229: request_info.method=request_method;
1.51 paf 230: const char *query_string=SAPI::get_env(pool, "QUERY_STRING");
1.40 paf 231: request_info.query_string=query_string;
1.68 paf 232: if(cgi) {
1.51 paf 233: if(const char *env_request_uri=SAPI::get_env(pool, "REQUEST_URI"))
1.42 paf 234: request_info.uri=env_request_uri;
1.51 paf 235: else if(const char *path_info=SAPI::get_env(pool, "PATH_INFO"))
1.42 paf 236: if(query_string) {
237: char *reconstructed_uri=(char *)malloc(
238: strlen(path_info)+1/*'?'*/+
239: strlen(query_string)+1/*0*/);
240: strcpy(reconstructed_uri, path_info);
241: strcat(reconstructed_uri, "?");
242: strcat(reconstructed_uri, query_string);
243: request_info.uri=reconstructed_uri;
244: } else
245: request_info.uri=path_info;
246: else
247: PTHROW(0, 0,
248: 0,
1.43 paf 249: "CGI: no PATH_INFO defined(in reinventing REQUEST_URI)");
1.68 paf 250:
1.72 paf 251: if(const char *script_name=SAPI::get_env(pool, "SCRIPT_NAME")) {
252: size_t script_name_len=strlen(script_name);
253: size_t uri_len=strlen(request_info.uri);
254: if(strncmp(request_info.uri,script_name, script_name_len)==0 &&
255: script_name_len != uri_len) // under IIS they are the same
256: PTHROW(0, 0,
257: 0,
258: "CGI: illegal call");
259: }
1.68 paf 260: } else
1.42 paf 261: request_info.uri=0;
1.40 paf 262:
1.51 paf 263: request_info.content_type=SAPI::get_env(pool, "CONTENT_TYPE");
264: const char *content_length=SAPI::get_env(pool, "CONTENT_LENGTH");
1.10 paf 265: request_info.content_length=(content_length?atoi(content_length):0);
1.51 paf 266: request_info.cookie=SAPI::get_env(pool, "HTTP_COOKIE");
267: request_info.user_agent=SAPI::get_env(pool, "HTTP_USER_AGENT");
1.10 paf 268:
1.5 paf 269: // prepare to process request
1.38 paf 270: Request request(pool,
1.10 paf 271: request_info,
1.91 parser 272: cgi ? String::UL_USER_HTML : String::UL_AS_IS
1.5 paf 273: );
274:
275: // some root-controlled location
1.102 parser 276: #ifdef SYSCONFDIR
277: const char *root_auto_path=SYSCONFDIR;
278: #else
279: # ifdef WIN32
1.10 paf 280: // c:\windows
1.36 paf 281: static char root_auto_path[MAX_STRING];
1.30 paf 282: GetWindowsDirectory(root_auto_path, MAX_STRING);
1.101 parser 283: # else
1.102 parser 284: #error must be compiled either configure/make or MSVC++
1.101 parser 285: # endif
1.5 paf 286: #endif
287:
288: // beside by binary
1.36 paf 289: static char site_auto_path[MAX_STRING];
1.98 parser 290: strncpy(site_auto_path, argv0, MAX_STRING-1); site_auto_path[MAX_STRING-1]=0; // filespec of my binary
1.88 parser 291: if(!(
292: rsplit(site_auto_path, '/') ||
1.89 parser 293: rsplit(site_auto_path, '\\'))) { // strip filename
1.88 parser 294: // no path, just filename
295: site_auto_path[0]='.'; site_auto_path[1]=0;
296: }
1.5 paf 297:
298: // process the request
1.35 paf 299: request.core(
1.30 paf 300: root_auto_path, false,
1.31 paf 301: site_auto_path, false,
1.35 paf 302: header_only);
1.57 paf 303:
304: //
305: done_socks();
1.84 parser 306:
307: #ifdef DEBUG_POOL_MALLOC
1.78 parser 308: extern void log_pool_stats(Pool& pool);
309: log_pool_stats(pool);
1.84 parser 310: #endif
1.16 paf 311:
1.22 paf 312: // must be last in PTRY{}PCATCH
1.40 paf 313: #ifdef WIN32
1.5 paf 314: SetUnhandledExceptionFilter(0);
1.25 paf 315: #endif
1.100 parser 316:
317: #ifndef WIN32
1.96 parser 318: //
319: if(!cgi)
1.100 parser 320: SAPI::send_body(pool, "\n", 1);
321: #endif
1.96 parser 322:
1.16 paf 323: // successful finish
324: return 0;
325: } PCATCH(e) { // global problem
1.43 paf 326: // must be first in PCATCH{}
327: #ifdef WIN32
328: SetUnhandledExceptionFilter(0);
329: #endif
1.44 paf 330: // don't allocate anything on pool here:
331: // possible pool' exception not catch-ed now
332: // and there could be out-of-memory exception
1.43 paf 333:
1.19 paf 334: const char *body=e.comment();
1.44 paf 335: // log it
336: SAPI::log(pool, "exception in request exception handler: %s", body);
337:
338: //
1.19 paf 339: int content_length=strlen(body);
1.5 paf 340:
1.35 paf 341: // prepare header
1.37 paf 342: SAPI::add_header_attribute(pool, "content-type", "text/plain");
1.19 paf 343: char content_length_cstr[MAX_NUMBER];
1.60 paf 344: snprintf(content_length_cstr, MAX_NUMBER, "%u", content_length);
1.37 paf 345: SAPI::add_header_attribute(pool, "content-length", content_length_cstr);
1.35 paf 346:
347: // send header
1.37 paf 348: SAPI::send_header(pool);
1.19 paf 349:
350: // body
1.35 paf 351: if(!header_only)
1.37 paf 352: SAPI::send_body(pool, body, content_length);
1.94 parser 353:
1.100 parser 354: #ifndef WIN32
1.96 parser 355: //
356: if(!cgi)
1.100 parser 357: SAPI::send_body(pool, "\n", 1);
358: #endif
1.96 parser 359:
1.16 paf 360: // unsuccessful finish
361: return 1;
362: }
363: PEND_CATCH
1.1 paf 364: }
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