Annotation of parser3/src/targets/cgi/parser3.C, revision 1.84
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:
1.84 ! parser 8: $Id: parser3.C,v 1.83 2001/05/16 18:13:17 parser 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:
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
1.61 paf 55: // appends to parser3.log located beside my binary
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];
63: strncpy(file_spec, argv0, MAX_STRING); // filespec of my binary
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);
86: }
87:
1.37 paf 88: const char *SAPI::get_env(Pool& pool, const char *name) {
1.28 paf 89: return getenv(name);
90: }
91:
1.59 paf 92: size_t SAPI::read_post(Pool& pool, char *buf, size_t max_bytes) {
93: size_t read_size=0;
1.12 paf 94: do {
1.36 paf 95: int chunk_size=read(fileno(stdin),
1.42 paf 96: buf+read_size, min(READ_POST_CHUNK_SIZE, max_bytes-read_size));
1.12 paf 97: if(chunk_size<0)
98: break;
99: read_size+=chunk_size;
100: } while(read_size<max_bytes);
101:
102: return read_size;
1.10 paf 103: }
104:
1.37 paf 105: void SAPI::add_header_attribute(Pool& pool, const char *key, const char *value) {
1.68 paf 106: if(cgi)
1.20 paf 107: printf("%s: %s\n", key, value);
1.19 paf 108: }
109:
1.56 paf 110: /// @todo intelligent cache-control
1.37 paf 111: void SAPI::send_header(Pool& pool) {
1.33 paf 112: if(cgi) {
1.55 paf 113: puts("expires: Fri, 23 Mar 2001 09:32:23 GMT");
1.33 paf 114:
115: // header | body delimiter
1.20 paf 116: puts("");
1.33 paf 117: }
1.30 paf 118: }
1.20 paf 119:
1.53 paf 120: void SAPI::send_body(Pool& pool, const void *buf, size_t size) {
1.19 paf 121: stdout_write(buf, size);
1.58 paf 122: }
123:
1.40 paf 124: /**
125: main workhorse
1.19 paf 126:
1.56 paf 127: @todo
1.40 paf 128: IIS: remove trailing default-document[index.html] from $request.uri.
129: to do that we need to consult metabase,
130: wich is tested but seems slow.
131: */
1.5 paf 132: int main(int argc, char *argv[]) {
1.45 paf 133: argv0=argv[0];
134:
1.32 paf 135: umask(2);
136:
137: #ifdef WIN32
1.27 paf 138: setmode(fileno(stdin), _O_BINARY);
139: setmode(fileno(stdout), _O_BINARY);
140: setmode(fileno(stderr), _O_BINARY);
1.32 paf 141: #endif
1.12 paf 142:
1.3 paf 143: // were we started as CGI?
1.20 paf 144: cgi=
1.2 paf 145: getenv("SERVER_SOFTWARE") ||
146: getenv("SERVER_NAME") ||
147: getenv("GATEWAY_INTERFACE") ||
148: getenv("REQUEST_METHOD");
1.5 paf 149:
1.10 paf 150: if(!cgi) {
151: if(argc<2) {
1.69 paf 152: printf(
153: "Parser/%s Copyright(c) 2001 ArtLebedev Group(http://www.artlebedev.com)\n"
154: "Author: Alexander Petrosyan <paf@design.ru>(http://design.ru/paf)\n"
155: "\n"
156: "Usage: %s <file>\n",
157: PARSER_VERSION,
158: argv0?argv0:"parser3");
1.67 paf 159: return 1;
1.10 paf 160: }
161: }
162:
1.26 paf 163: char *filespec_to_process=cgi?getenv("PATH_TRANSLATED"):argv[1];
1.36 paf 164: #ifdef WIN32
1.43 paf 165: back_slashes_to_slashes(filespec_to_process);
1.36 paf 166: #endif
1.10 paf 167:
1.35 paf 168: const char *request_method=getenv("REQUEST_METHOD");
169: bool header_only=request_method && strcasecmp(request_method, "HEAD")==0;
1.5 paf 170: PTRY { // global try
171: // must be first in PTRY{}PCATCH
1.40 paf 172: #ifdef WIN32
1.5 paf 173: SetUnhandledExceptionFilter(&TopLevelExceptionFilter);
174: #endif
1.2 paf 175:
1.62 paf 176: // init socks
1.57 paf 177: init_socks(pool);
178:
1.73 paf 179: // init global classes
180: init_methoded_array(pool);
1.10 paf 181: // init global variables
1.37 paf 182: pa_globals_init(pool);
1.10 paf 183:
1.13 paf 184: if(!filespec_to_process)
185: PTHROW(0, 0,
186: 0,
1.68 paf 187: "Parser/%s", PARSER_VERSION);
1.13 paf 188:
1.10 paf 189: // Request info
190: Request::Info request_info;
1.39 paf 191: if(cgi) {
1.51 paf 192: if(const char *env_document_root=SAPI::get_env(pool, "DOCUMENT_ROOT"))
1.39 paf 193: request_info.document_root=env_document_root;
1.51 paf 194: else if(const char *path_info=SAPI::get_env(pool, "PATH_INFO")) {
1.40 paf 195: // IIS
1.39 paf 196: size_t len=strlen(filespec_to_process)-strlen(path_info);
1.40 paf 197: char *buf=(char *)pool.malloc(len+1);
198: strncpy(buf, filespec_to_process, len);
1.39 paf 199: buf[len]=0;
200: request_info.document_root=buf;
201: } else
202: PTHROW(0, 0,
203: 0,
1.43 paf 204: "CGI: no PATH_INFO defined(in reinventing DOCUMENT_ROOT)");
1.39 paf 205: } else {
206: static char buf[MAX_STRING];
207: strncpy(buf, filespec_to_process, MAX_STRING);
1.70 paf 208: if(rsplit(buf, '/') || rsplit(buf, '\\')) // strip filename
209: request_info.document_root=buf;
210: else
211: request_info.document_root="";
1.13 paf 212: }
1.10 paf 213: request_info.path_translated=filespec_to_process;
1.35 paf 214: request_info.method=request_method;
1.51 paf 215: const char *query_string=SAPI::get_env(pool, "QUERY_STRING");
1.40 paf 216: request_info.query_string=query_string;
1.68 paf 217: if(cgi) {
1.51 paf 218: if(const char *env_request_uri=SAPI::get_env(pool, "REQUEST_URI"))
1.42 paf 219: request_info.uri=env_request_uri;
1.51 paf 220: else if(const char *path_info=SAPI::get_env(pool, "PATH_INFO"))
1.42 paf 221: if(query_string) {
222: char *reconstructed_uri=(char *)malloc(
223: strlen(path_info)+1/*'?'*/+
224: strlen(query_string)+1/*0*/);
225: strcpy(reconstructed_uri, path_info);
226: strcat(reconstructed_uri, "?");
227: strcat(reconstructed_uri, query_string);
228: request_info.uri=reconstructed_uri;
229: } else
230: request_info.uri=path_info;
231: else
232: PTHROW(0, 0,
233: 0,
1.43 paf 234: "CGI: no PATH_INFO defined(in reinventing REQUEST_URI)");
1.68 paf 235:
1.72 paf 236: if(const char *script_name=SAPI::get_env(pool, "SCRIPT_NAME")) {
237: size_t script_name_len=strlen(script_name);
238: size_t uri_len=strlen(request_info.uri);
239: if(strncmp(request_info.uri,script_name, script_name_len)==0 &&
240: script_name_len != uri_len) // under IIS they are the same
241: PTHROW(0, 0,
242: 0,
243: "CGI: illegal call");
244: }
1.68 paf 245: } else
1.42 paf 246: request_info.uri=0;
1.40 paf 247:
1.51 paf 248: request_info.content_type=SAPI::get_env(pool, "CONTENT_TYPE");
249: const char *content_length=SAPI::get_env(pool, "CONTENT_LENGTH");
1.10 paf 250: request_info.content_length=(content_length?atoi(content_length):0);
1.51 paf 251: request_info.cookie=SAPI::get_env(pool, "HTTP_COOKIE");
252: request_info.user_agent=SAPI::get_env(pool, "HTTP_USER_AGENT");
1.10 paf 253:
1.5 paf 254: // prepare to process request
1.38 paf 255: Request request(pool,
1.10 paf 256: request_info,
1.84 ! parser 257: true ||cgi ? String::UL_USER_HTML : String::UL_AS_IS
1.5 paf 258: );
259:
260: // some root-controlled location
1.3 paf 261: #ifdef WIN32
1.10 paf 262: // c:\windows
1.36 paf 263: static char root_auto_path[MAX_STRING];
1.30 paf 264: GetWindowsDirectory(root_auto_path, MAX_STRING);
1.3 paf 265: #else
1.40 paf 266: // ~nobody todo: figure out a better place
1.64 paf 267: const char *root_auto_path=SAPI::get_env(pool, "HOME");
1.5 paf 268: #endif
269:
270: // beside by binary
1.36 paf 271: static char site_auto_path[MAX_STRING];
1.30 paf 272: strncpy(site_auto_path, argv[0], MAX_STRING); // filespec of my binary
273: rsplit(site_auto_path, '/'); rsplit(site_auto_path, '\\');// strip filename
1.5 paf 274:
275: // process the request
1.35 paf 276: request.core(
1.30 paf 277: root_auto_path, false,
1.31 paf 278: site_auto_path, false,
1.35 paf 279: header_only);
1.57 paf 280:
281: //
282: done_socks();
1.84 ! parser 283:
! 284: #ifdef DEBUG_POOL_MALLOC
1.78 parser 285: extern void log_pool_stats(Pool& pool);
286: log_pool_stats(pool);
1.84 ! parser 287: #endif
1.16 paf 288:
1.22 paf 289: // must be last in PTRY{}PCATCH
1.40 paf 290: #ifdef WIN32
1.5 paf 291: SetUnhandledExceptionFilter(0);
1.25 paf 292: #endif
1.16 paf 293: // successful finish
294: return 0;
295: } PCATCH(e) { // global problem
1.43 paf 296: // must be first in PCATCH{}
297: #ifdef WIN32
298: SetUnhandledExceptionFilter(0);
299: #endif
1.44 paf 300: // don't allocate anything on pool here:
301: // possible pool' exception not catch-ed now
302: // and there could be out-of-memory exception
1.43 paf 303:
1.19 paf 304: const char *body=e.comment();
1.44 paf 305: // log it
306: SAPI::log(pool, "exception in request exception handler: %s", body);
307:
308: //
1.19 paf 309: int content_length=strlen(body);
1.5 paf 310:
1.35 paf 311: // prepare header
1.37 paf 312: SAPI::add_header_attribute(pool, "content-type", "text/plain");
1.19 paf 313: char content_length_cstr[MAX_NUMBER];
1.60 paf 314: snprintf(content_length_cstr, MAX_NUMBER, "%u", content_length);
1.37 paf 315: SAPI::add_header_attribute(pool, "content-length", content_length_cstr);
1.35 paf 316:
317: // send header
1.37 paf 318: SAPI::send_header(pool);
1.19 paf 319:
320: // body
1.35 paf 321: if(!header_only)
1.37 paf 322: SAPI::send_body(pool, body, content_length);
1.2 paf 323:
1.16 paf 324: // unsuccessful finish
325: return 1;
326: }
327: PEND_CATCH
1.1 paf 328: }
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