Annotation of parser3/src/targets/cgi/parser3.C, revision 1.43
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:
1.43 ! paf 8: $Id: parser3.C,v 1.42 2001/03/24 08:54:04 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:
1.42 paf 27: /// IIS refuses to read bigger chunks
28: const size_t READ_POST_CHUNK_SIZE=0x400*0x400; // 1M
29:
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;
1.31 paf 39: snprintf(buf, MAX_STRING, "Exception %#X at %p",
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:
1.37 paf 53: //@{
54: /// SAPI funcs decl
55: const char *SAPI::get_env(Pool& pool, const char *name) {
1.28 paf 56: return getenv(name);
57: }
58:
1.37 paf 59: uint SAPI::read_post(Pool& pool, char *buf, uint max_bytes) {
1.36 paf 60: uint read_size=0;
1.12 paf 61: do {
1.36 paf 62: int chunk_size=read(fileno(stdin),
1.42 paf 63: buf+read_size, min(READ_POST_CHUNK_SIZE, max_bytes-read_size));
1.12 paf 64: if(chunk_size<0)
65: break;
66: read_size+=chunk_size;
67: } while(read_size<max_bytes);
68:
69: return read_size;
1.10 paf 70: }
71:
1.37 paf 72: void SAPI::add_header_attribute(Pool& pool, const char *key, const char *value) {
1.20 paf 73: if(cgi)
74: printf("%s: %s\n", key, value);
1.19 paf 75: }
76:
1.33 paf 77: /// @todo intelligent cache-control
1.37 paf 78: void SAPI::send_header(Pool& pool) {
1.33 paf 79: if(cgi) {
1.41 paf 80: puts("expires: Fri, 23 Mar 2001 09:32:23 GMT");
1.33 paf 81:
82: // header | body delimiter
1.20 paf 83: puts("");
1.33 paf 84: }
1.30 paf 85: }
1.20 paf 86:
1.37 paf 87: void SAPI::send_body(Pool& pool, const char *buf, size_t size) {
1.19 paf 88: stdout_write(buf, size);
1.17 paf 89: }
1.37 paf 90: //@}
1.30 paf 91:
1.40 paf 92: /**
93: main workhorse
1.19 paf 94:
1.40 paf 95: @todo
96: IIS: remove trailing default-document[index.html] from $request.uri.
97: to do that we need to consult metabase,
98: wich is tested but seems slow.
99: */
1.5 paf 100: int main(int argc, char *argv[]) {
1.32 paf 101: umask(2);
102:
103: #ifdef WIN32
1.27 paf 104: setmode(fileno(stdin), _O_BINARY);
105: setmode(fileno(stdout), _O_BINARY);
106: setmode(fileno(stderr), _O_BINARY);
1.32 paf 107: #endif
1.12 paf 108:
1.3 paf 109: // were we started as CGI?
1.20 paf 110: cgi=
1.2 paf 111: getenv("SERVER_SOFTWARE") ||
112: getenv("SERVER_NAME") ||
113: getenv("GATEWAY_INTERFACE") ||
114: getenv("REQUEST_METHOD");
1.5 paf 115:
1.10 paf 116: if(!cgi) {
117: if(argc<2) {
118: char *binary=argv[0];
1.13 paf 119: printf("Usage: %s <file>\n", binary?binary:"parser3");
1.10 paf 120: exit(1);
121: }
122: }
123:
1.26 paf 124: char *filespec_to_process=cgi?getenv("PATH_TRANSLATED"):argv[1];
1.36 paf 125: #ifdef WIN32
1.43 ! paf 126: back_slashes_to_slashes(filespec_to_process);
1.36 paf 127: #endif
1.10 paf 128:
1.35 paf 129: const char *request_method=getenv("REQUEST_METHOD");
130: bool header_only=request_method && strcasecmp(request_method, "HEAD")==0;
1.5 paf 131: PTRY { // global try
132: // must be first in PTRY{}PCATCH
1.40 paf 133: #ifdef WIN32
1.5 paf 134: SetUnhandledExceptionFilter(&TopLevelExceptionFilter);
135: //TODO: initSocks();
136: #endif
1.2 paf 137:
1.10 paf 138: // init global variables
1.37 paf 139: pa_globals_init(pool);
1.10 paf 140:
1.13 paf 141: if(!filespec_to_process)
142: PTHROW(0, 0,
143: 0,
144: "no file to process");
145:
1.10 paf 146: // Request info
147: Request::Info request_info;
1.39 paf 148: if(cgi) {
149: if(const char *env_document_root=getenv("DOCUMENT_ROOT"))
150: request_info.document_root=env_document_root;
151: else if(const char *path_info=getenv("PATH_INFO")) {
1.40 paf 152: // IIS
1.39 paf 153: size_t len=strlen(filespec_to_process)-strlen(path_info);
1.40 paf 154: char *buf=(char *)pool.malloc(len+1);
155: strncpy(buf, filespec_to_process, len);
1.39 paf 156: buf[len]=0;
157: request_info.document_root=buf;
158: } else
159: PTHROW(0, 0,
160: 0,
1.43 ! paf 161: "CGI: no PATH_INFO defined(in reinventing DOCUMENT_ROOT)");
1.39 paf 162: } else {
163: static char buf[MAX_STRING];
164: strncpy(buf, filespec_to_process, MAX_STRING);
165: rsplit(buf, '/'); rsplit(buf, '\\');// strip filename
166: request_info.document_root=buf;
1.13 paf 167: }
1.10 paf 168: request_info.path_translated=filespec_to_process;
1.35 paf 169: request_info.method=request_method;
1.40 paf 170: const char *query_string=getenv("QUERY_STRING");
171: request_info.query_string=query_string;
1.42 paf 172: if(cgi)
173: if(const char *env_request_uri=getenv("REQUEST_URI"))
174: request_info.uri=env_request_uri;
1.43 ! paf 175: else if(const char *path_info=getenv("PATH_INFO"))
1.42 paf 176: if(query_string) {
177: char *reconstructed_uri=(char *)malloc(
178: strlen(path_info)+1/*'?'*/+
179: strlen(query_string)+1/*0*/);
180: strcpy(reconstructed_uri, path_info);
181: strcat(reconstructed_uri, "?");
182: strcat(reconstructed_uri, query_string);
183: request_info.uri=reconstructed_uri;
184: } else
185: request_info.uri=path_info;
186: else
187: PTHROW(0, 0,
188: 0,
1.43 ! paf 189: "CGI: no PATH_INFO defined(in reinventing REQUEST_URI)");
1.42 paf 190: else
191: request_info.uri=0;
1.40 paf 192:
1.10 paf 193: request_info.content_type=getenv("CONTENT_TYPE");
194: const char *content_length=getenv("CONTENT_LENGTH");
195: request_info.content_length=(content_length?atoi(content_length):0);
1.21 paf 196: request_info.cookie=getenv("HTTP_COOKIE");
1.10 paf 197:
1.5 paf 198: // prepare to process request
1.38 paf 199: Request request(pool,
1.10 paf 200: request_info,
1.27 paf 201: cgi ? String::UL_HTML_TYPO : String::UL_NO
1.5 paf 202: );
203:
204: // some root-controlled location
1.3 paf 205: #ifdef WIN32
1.10 paf 206: // c:\windows
1.36 paf 207: static char root_auto_path[MAX_STRING];
1.30 paf 208: GetWindowsDirectory(root_auto_path, MAX_STRING);
1.3 paf 209: #else
1.40 paf 210: // ~nobody todo: figure out a better place
1.36 paf 211: char *root_auto_path=getenv("HOME");
1.5 paf 212: #endif
213:
214: // beside by binary
1.36 paf 215: static char site_auto_path[MAX_STRING];
1.30 paf 216: strncpy(site_auto_path, argv[0], MAX_STRING); // filespec of my binary
217: rsplit(site_auto_path, '/'); rsplit(site_auto_path, '\\');// strip filename
1.5 paf 218:
219: // process the request
1.35 paf 220: request.core(
1.30 paf 221: root_auto_path, false,
1.31 paf 222: site_auto_path, false,
1.35 paf 223: header_only);
1.16 paf 224:
1.22 paf 225: // must be last in PTRY{}PCATCH
1.40 paf 226: #ifdef WIN32
1.5 paf 227: SetUnhandledExceptionFilter(0);
1.25 paf 228: #endif
1.16 paf 229: // successful finish
230: return 0;
231: } PCATCH(e) { // global problem
1.43 ! paf 232: // must be first in PCATCH{}
! 233: #ifdef WIN32
! 234: SetUnhandledExceptionFilter(0);
! 235: #endif
! 236:
1.19 paf 237: const char *body=e.comment();
238: int content_length=strlen(body);
1.5 paf 239:
1.35 paf 240: // prepare header
1.37 paf 241: SAPI::add_header_attribute(pool, "content-type", "text/plain");
1.19 paf 242: char content_length_cstr[MAX_NUMBER];
1.34 paf 243: snprintf(content_length_cstr, MAX_NUMBER, "%lu", content_length);
1.37 paf 244: SAPI::add_header_attribute(pool, "content-length", content_length_cstr);
1.35 paf 245:
246: // send header
1.37 paf 247: SAPI::send_header(pool);
1.19 paf 248:
249: // body
1.35 paf 250: if(!header_only)
1.37 paf 251: SAPI::send_body(pool, body, content_length);
1.2 paf 252:
1.16 paf 253: // unsuccessful finish
254: return 1;
255: }
256: PEND_CATCH
1.1 paf 257: }
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