Annotation of parser3/src/targets/cgi/parser3.C, revision 1.57
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:
1.57 ! paf 8: $Id: parser3.C,v 1.56 2001/04/03 07:32:48 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"
1.57 ! paf 27: #include "pa_socks.h"
1.1 paf 28:
1.42 paf 29: /// IIS refuses to read bigger chunks
30: const size_t READ_POST_CHUNK_SIZE=0x400*0x400; // 1M
31:
1.45 paf 32: const char *argv0;
1.42 paf 33: Pool pool(0); // global pool [dont describe to doxygen: it confuses it with param names]
1.27 paf 34: bool cgi; ///< we were started as CGI?
1.5 paf 35:
1.40 paf 36: #ifdef WIN32
37: /// global system errors into parser exceptions converter
1.43 paf 38: static LONG WINAPI TopLevelExceptionFilter(struct _EXCEPTION_POINTERS *ExceptionInfo) {
1.5 paf 39: char buf[MAX_STRING];
40: if(ExceptionInfo && ExceptionInfo->ExceptionRecord) {
1.36 paf 41: struct _EXCEPTION_RECORD *er=ExceptionInfo->ExceptionRecord;
1.46 paf 42: snprintf(buf, MAX_STRING, "Exception 0x%X at %p",
1.31 paf 43: er->ExceptionCode,
44: er->ExceptionAddress);
1.5 paf 45: } else
46: strcpy(buf, "Exception <unknown>");
47:
48: PTHROW(0, 0,
49: 0,
50: buf);
51:
52: return EXCEPTION_EXECUTE_HANDLER; // never reached
53: }
1.27 paf 54: #endif
55:
1.46 paf 56: // SAPI
1.37 paf 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:
1.56 paf 79: /// @todo intelligent cache-control
1.37 paf 80: void SAPI::send_header(Pool& pool) {
1.33 paf 81: if(cgi) {
1.55 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:
1.53 paf 89: void SAPI::send_body(Pool& pool, const void *buf, size_t size) {
1.19 paf 90: stdout_write(buf, size);
1.17 paf 91: }
1.44 paf 92:
1.46 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: }
1.30 paf 125:
1.40 paf 126: /**
127: main workhorse
1.19 paf 128:
1.56 paf 129: @todo
1.40 paf 130: IIS: remove trailing default-document[index.html] from $request.uri.
131: to do that we need to consult metabase,
132: wich is tested but seems slow.
133: */
1.5 paf 134: int main(int argc, char *argv[]) {
1.45 paf 135: argv0=argv[0];
136:
1.32 paf 137: umask(2);
138:
139: #ifdef WIN32
1.27 paf 140: setmode(fileno(stdin), _O_BINARY);
141: setmode(fileno(stdout), _O_BINARY);
142: setmode(fileno(stderr), _O_BINARY);
1.32 paf 143: #endif
1.12 paf 144:
1.3 paf 145: // were we started as CGI?
1.20 paf 146: cgi=
1.2 paf 147: getenv("SERVER_SOFTWARE") ||
148: getenv("SERVER_NAME") ||
149: getenv("GATEWAY_INTERFACE") ||
150: getenv("REQUEST_METHOD");
1.5 paf 151:
1.10 paf 152: if(!cgi) {
153: if(argc<2) {
1.45 paf 154: printf("Usage: %s <file>\n", argv0?argv0:"parser3");
1.10 paf 155: exit(1);
156: }
157: }
158:
1.26 paf 159: char *filespec_to_process=cgi?getenv("PATH_TRANSLATED"):argv[1];
1.36 paf 160: #ifdef WIN32
1.43 paf 161: back_slashes_to_slashes(filespec_to_process);
1.36 paf 162: #endif
1.10 paf 163:
1.35 paf 164: const char *request_method=getenv("REQUEST_METHOD");
165: bool header_only=request_method && strcasecmp(request_method, "HEAD")==0;
1.5 paf 166: PTRY { // global try
167: // must be first in PTRY{}PCATCH
1.40 paf 168: #ifdef WIN32
1.5 paf 169: SetUnhandledExceptionFilter(&TopLevelExceptionFilter);
170: //TODO: initSocks();
171: #endif
1.2 paf 172:
1.57 ! paf 173: //
! 174: init_socks(pool);
! 175:
1.10 paf 176: // init global variables
1.37 paf 177: pa_globals_init(pool);
1.10 paf 178:
1.13 paf 179: if(!filespec_to_process)
180: PTHROW(0, 0,
181: 0,
182: "no file to process");
183:
1.10 paf 184: // Request info
185: Request::Info request_info;
1.39 paf 186: if(cgi) {
1.51 paf 187: if(const char *env_document_root=SAPI::get_env(pool, "DOCUMENT_ROOT"))
1.39 paf 188: request_info.document_root=env_document_root;
1.51 paf 189: else if(const char *path_info=SAPI::get_env(pool, "PATH_INFO")) {
1.40 paf 190: // IIS
1.39 paf 191: size_t len=strlen(filespec_to_process)-strlen(path_info);
1.40 paf 192: char *buf=(char *)pool.malloc(len+1);
193: strncpy(buf, filespec_to_process, len);
1.39 paf 194: buf[len]=0;
195: request_info.document_root=buf;
196: } else
197: PTHROW(0, 0,
198: 0,
1.43 paf 199: "CGI: no PATH_INFO defined(in reinventing DOCUMENT_ROOT)");
1.39 paf 200: } else {
201: static char buf[MAX_STRING];
202: strncpy(buf, filespec_to_process, MAX_STRING);
203: rsplit(buf, '/'); rsplit(buf, '\\');// strip filename
204: request_info.document_root=buf;
1.13 paf 205: }
1.10 paf 206: request_info.path_translated=filespec_to_process;
1.35 paf 207: request_info.method=request_method;
1.51 paf 208: const char *query_string=SAPI::get_env(pool, "QUERY_STRING");
1.40 paf 209: request_info.query_string=query_string;
1.42 paf 210: if(cgi)
1.51 paf 211: if(const char *env_request_uri=SAPI::get_env(pool, "REQUEST_URI"))
1.42 paf 212: request_info.uri=env_request_uri;
1.51 paf 213: else if(const char *path_info=SAPI::get_env(pool, "PATH_INFO"))
1.42 paf 214: if(query_string) {
215: char *reconstructed_uri=(char *)malloc(
216: strlen(path_info)+1/*'?'*/+
217: strlen(query_string)+1/*0*/);
218: strcpy(reconstructed_uri, path_info);
219: strcat(reconstructed_uri, "?");
220: strcat(reconstructed_uri, query_string);
221: request_info.uri=reconstructed_uri;
222: } else
223: request_info.uri=path_info;
224: else
225: PTHROW(0, 0,
226: 0,
1.43 paf 227: "CGI: no PATH_INFO defined(in reinventing REQUEST_URI)");
1.42 paf 228: else
229: request_info.uri=0;
1.40 paf 230:
1.51 paf 231: request_info.content_type=SAPI::get_env(pool, "CONTENT_TYPE");
232: const char *content_length=SAPI::get_env(pool, "CONTENT_LENGTH");
1.10 paf 233: request_info.content_length=(content_length?atoi(content_length):0);
1.51 paf 234: request_info.cookie=SAPI::get_env(pool, "HTTP_COOKIE");
235: request_info.user_agent=SAPI::get_env(pool, "HTTP_USER_AGENT");
1.10 paf 236:
1.5 paf 237: // prepare to process request
1.38 paf 238: Request request(pool,
1.10 paf 239: request_info,
1.54 paf 240: 1||cgi ? String::UL_HTML_TYPO : String::UL_CLEAN
1.5 paf 241: );
242:
243: // some root-controlled location
1.3 paf 244: #ifdef WIN32
1.10 paf 245: // c:\windows
1.36 paf 246: static char root_auto_path[MAX_STRING];
1.30 paf 247: GetWindowsDirectory(root_auto_path, MAX_STRING);
1.3 paf 248: #else
1.40 paf 249: // ~nobody todo: figure out a better place
1.51 paf 250: char *root_auto_path=SAPI::get_env(pool, "HOME");
1.5 paf 251: #endif
252:
253: // beside by binary
1.36 paf 254: static char site_auto_path[MAX_STRING];
1.30 paf 255: strncpy(site_auto_path, argv[0], MAX_STRING); // filespec of my binary
256: rsplit(site_auto_path, '/'); rsplit(site_auto_path, '\\');// strip filename
1.5 paf 257:
258: // process the request
1.35 paf 259: request.core(
1.30 paf 260: root_auto_path, false,
1.31 paf 261: site_auto_path, false,
1.35 paf 262: header_only);
1.57 ! paf 263:
! 264: //
! 265: done_socks();
1.16 paf 266:
1.22 paf 267: // must be last in PTRY{}PCATCH
1.40 paf 268: #ifdef WIN32
1.5 paf 269: SetUnhandledExceptionFilter(0);
1.25 paf 270: #endif
1.16 paf 271: // successful finish
272: return 0;
273: } PCATCH(e) { // global problem
1.43 paf 274: // must be first in PCATCH{}
275: #ifdef WIN32
276: SetUnhandledExceptionFilter(0);
277: #endif
1.44 paf 278: // don't allocate anything on pool here:
279: // possible pool' exception not catch-ed now
280: // and there could be out-of-memory exception
1.43 paf 281:
1.19 paf 282: const char *body=e.comment();
1.44 paf 283: // log it
284: SAPI::log(pool, "exception in request exception handler: %s", body);
285:
286: //
1.19 paf 287: int content_length=strlen(body);
1.5 paf 288:
1.35 paf 289: // prepare header
1.37 paf 290: SAPI::add_header_attribute(pool, "content-type", "text/plain");
1.19 paf 291: char content_length_cstr[MAX_NUMBER];
1.34 paf 292: snprintf(content_length_cstr, MAX_NUMBER, "%lu", content_length);
1.37 paf 293: SAPI::add_header_attribute(pool, "content-length", content_length_cstr);
1.35 paf 294:
295: // send header
1.37 paf 296: SAPI::send_header(pool);
1.19 paf 297:
298: // body
1.35 paf 299: if(!header_only)
1.37 paf 300: SAPI::send_body(pool, body, content_length);
1.2 paf 301:
1.16 paf 302: // unsuccessful finish
303: return 1;
304: }
305: PEND_CATCH
1.1 paf 306: }
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