Annotation of parser3/src/targets/cgi/parser3.C, revision 1.63
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:
1.63 ! paf 8: $Id: parser3.C,v 1.62 2001/04/09 16:04:57 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
1.61 paf 57: // appends to parser3.log located beside my binary
58: void SAPI::log(Pool& pool, const char *fmt, ...) {
59: bool opened;
60: FILE *f=0;
61:
62: if(argv0) {
63: // beside by binary
64: char file_spec[MAX_STRING];
65: strncpy(file_spec, argv0, MAX_STRING); // filespec of my binary
66: rsplit(file_spec, '/'); rsplit(file_spec, '\\');// strip filename
67: strcat(file_spec, "/parser3.log");
68: f=fopen(file_spec, "at");
69: }
70: opened=f!=0;
71: if(!opened)
72: f=stderr;
73:
74: // prefix
75: time_t t=time(0);
76: const char *stamp=ctime(&t);
77: fprintf(f, "[%.*s] ", strlen(stamp)-1, stamp);
78: // message
79: va_list args;
80: va_start(args,fmt);
81: vfprintf(f, fmt, args);
82: va_end(args);
83: // newline
84: fprintf(f, "\n");
85:
86: if(opened)
87: fclose(f);
88: }
89:
1.37 paf 90: const char *SAPI::get_env(Pool& pool, const char *name) {
1.28 paf 91: return getenv(name);
92: }
93:
1.59 paf 94: size_t SAPI::read_post(Pool& pool, char *buf, size_t max_bytes) {
95: size_t read_size=0;
1.12 paf 96: do {
1.36 paf 97: int chunk_size=read(fileno(stdin),
1.42 paf 98: buf+read_size, min(READ_POST_CHUNK_SIZE, max_bytes-read_size));
1.12 paf 99: if(chunk_size<0)
100: break;
101: read_size+=chunk_size;
102: } while(read_size<max_bytes);
103:
104: return read_size;
1.10 paf 105: }
106:
1.37 paf 107: void SAPI::add_header_attribute(Pool& pool, const char *key, const char *value) {
1.20 paf 108: if(cgi)
109: printf("%s: %s\n", key, value);
1.19 paf 110: }
111:
1.56 paf 112: /// @todo intelligent cache-control
1.37 paf 113: void SAPI::send_header(Pool& pool) {
1.33 paf 114: if(cgi) {
1.55 paf 115: puts("expires: Fri, 23 Mar 2001 09:32:23 GMT");
1.33 paf 116:
117: // header | body delimiter
1.20 paf 118: puts("");
1.33 paf 119: }
1.30 paf 120: }
1.20 paf 121:
1.53 paf 122: void SAPI::send_body(Pool& pool, const void *buf, size_t size) {
1.19 paf 123: stdout_write(buf, size);
1.58 paf 124: }
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: #endif
1.2 paf 171:
1.62 paf 172: // init socks
1.57 paf 173: init_socks(pool);
174:
1.10 paf 175: // init global variables
1.37 paf 176: pa_globals_init(pool);
1.10 paf 177:
1.13 paf 178: if(!filespec_to_process)
179: PTHROW(0, 0,
180: 0,
181: "no file to process");
182:
1.10 paf 183: // Request info
184: Request::Info request_info;
1.39 paf 185: if(cgi) {
1.51 paf 186: if(const char *env_document_root=SAPI::get_env(pool, "DOCUMENT_ROOT"))
1.39 paf 187: request_info.document_root=env_document_root;
1.51 paf 188: else if(const char *path_info=SAPI::get_env(pool, "PATH_INFO")) {
1.40 paf 189: // IIS
1.39 paf 190: size_t len=strlen(filespec_to_process)-strlen(path_info);
1.40 paf 191: char *buf=(char *)pool.malloc(len+1);
192: strncpy(buf, filespec_to_process, len);
1.39 paf 193: buf[len]=0;
194: request_info.document_root=buf;
195: } else
196: PTHROW(0, 0,
197: 0,
1.43 paf 198: "CGI: no PATH_INFO defined(in reinventing DOCUMENT_ROOT)");
1.39 paf 199: } else {
200: static char buf[MAX_STRING];
201: strncpy(buf, filespec_to_process, MAX_STRING);
202: rsplit(buf, '/'); rsplit(buf, '\\');// strip filename
203: request_info.document_root=buf;
1.13 paf 204: }
1.10 paf 205: request_info.path_translated=filespec_to_process;
1.35 paf 206: request_info.method=request_method;
1.51 paf 207: const char *query_string=SAPI::get_env(pool, "QUERY_STRING");
1.40 paf 208: request_info.query_string=query_string;
1.42 paf 209: if(cgi)
1.51 paf 210: if(const char *env_request_uri=SAPI::get_env(pool, "REQUEST_URI"))
1.42 paf 211: request_info.uri=env_request_uri;
1.51 paf 212: else if(const char *path_info=SAPI::get_env(pool, "PATH_INFO"))
1.42 paf 213: if(query_string) {
214: char *reconstructed_uri=(char *)malloc(
215: strlen(path_info)+1/*'?'*/+
216: strlen(query_string)+1/*0*/);
217: strcpy(reconstructed_uri, path_info);
218: strcat(reconstructed_uri, "?");
219: strcat(reconstructed_uri, query_string);
220: request_info.uri=reconstructed_uri;
221: } else
222: request_info.uri=path_info;
223: else
224: PTHROW(0, 0,
225: 0,
1.43 paf 226: "CGI: no PATH_INFO defined(in reinventing REQUEST_URI)");
1.42 paf 227: else
228: request_info.uri=0;
1.40 paf 229:
1.51 paf 230: request_info.content_type=SAPI::get_env(pool, "CONTENT_TYPE");
231: const char *content_length=SAPI::get_env(pool, "CONTENT_LENGTH");
1.10 paf 232: request_info.content_length=(content_length?atoi(content_length):0);
1.51 paf 233: request_info.cookie=SAPI::get_env(pool, "HTTP_COOKIE");
234: request_info.user_agent=SAPI::get_env(pool, "HTTP_USER_AGENT");
1.10 paf 235:
1.5 paf 236: // prepare to process request
1.38 paf 237: Request request(pool,
1.10 paf 238: request_info,
1.63 ! paf 239: 1||cgi ? String::UL_HTML_TYPO : String::UL_AS_IS
1.5 paf 240: );
241:
242: // some root-controlled location
1.3 paf 243: #ifdef WIN32
1.10 paf 244: // c:\windows
1.36 paf 245: static char root_auto_path[MAX_STRING];
1.30 paf 246: GetWindowsDirectory(root_auto_path, MAX_STRING);
1.3 paf 247: #else
1.40 paf 248: // ~nobody todo: figure out a better place
1.51 paf 249: char *root_auto_path=SAPI::get_env(pool, "HOME");
1.5 paf 250: #endif
251:
252: // beside by binary
1.36 paf 253: static char site_auto_path[MAX_STRING];
1.30 paf 254: strncpy(site_auto_path, argv[0], MAX_STRING); // filespec of my binary
255: rsplit(site_auto_path, '/'); rsplit(site_auto_path, '\\');// strip filename
1.5 paf 256:
257: // process the request
1.35 paf 258: request.core(
1.30 paf 259: root_auto_path, false,
1.31 paf 260: site_auto_path, false,
1.35 paf 261: header_only);
1.57 paf 262:
263: //
264: done_socks();
1.16 paf 265:
1.22 paf 266: // must be last in PTRY{}PCATCH
1.40 paf 267: #ifdef WIN32
1.5 paf 268: SetUnhandledExceptionFilter(0);
1.25 paf 269: #endif
1.16 paf 270: // successful finish
271: return 0;
272: } PCATCH(e) { // global problem
1.43 paf 273: // must be first in PCATCH{}
274: #ifdef WIN32
275: SetUnhandledExceptionFilter(0);
276: #endif
1.44 paf 277: // don't allocate anything on pool here:
278: // possible pool' exception not catch-ed now
279: // and there could be out-of-memory exception
1.43 paf 280:
1.19 paf 281: const char *body=e.comment();
1.44 paf 282: // log it
283: SAPI::log(pool, "exception in request exception handler: %s", body);
284:
285: //
1.19 paf 286: int content_length=strlen(body);
1.5 paf 287:
1.35 paf 288: // prepare header
1.37 paf 289: SAPI::add_header_attribute(pool, "content-type", "text/plain");
1.19 paf 290: char content_length_cstr[MAX_NUMBER];
1.60 paf 291: snprintf(content_length_cstr, MAX_NUMBER, "%u", content_length);
1.37 paf 292: SAPI::add_header_attribute(pool, "content-length", content_length_cstr);
1.35 paf 293:
294: // send header
1.37 paf 295: SAPI::send_header(pool);
1.19 paf 296:
297: // body
1.35 paf 298: if(!header_only)
1.37 paf 299: SAPI::send_body(pool, body, content_length);
1.2 paf 300:
1.16 paf 301: // unsuccessful finish
302: return 1;
303: }
304: PEND_CATCH
1.1 paf 305: }
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