Annotation of parser3/src/targets/cgi/parser3.C, revision 1.117
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)
1.113 parser 5: Author: Alexander Petrosyan <paf@design.ru>(http://design.ru/paf)
1.27 paf 6:
1.117 ! parser 7: $Id: parser3.C,v 1.116 2001/09/26 15:43:59 parser Exp $
1.1 paf 8: */
9:
1.40 paf 10: #include "pa_config_includes.h"
1.3 paf 11:
12: #ifdef WIN32
13: # include <windows.h>
14: #endif
1.27 paf 15:
1.37 paf 16: #include "pa_sapi.h"
1.76 paf 17: #include "classes.h"
1.24 paf 18: #include "pa_common.h"
1.2 paf 19: #include "pa_request.h"
1.57 paf 20: #include "pa_socks.h"
1.68 paf 21: #include "pa_version.h"
1.69 paf 22:
1.84 parser 23: //#define DEBUG_POOL_MALLOC
24:
1.109 parser 25: // consts
1.113 parser 26:
27: extern const char *main_RCSIds[];
1.116 parser 28: #ifdef USE_SMTP
1.113 parser 29: extern const char *smtp_RCSIds[];
1.114 parser 30: #endif
1.113 parser 31: extern const char *gd_RCSIds[];
32: extern const char *classes_RCSIds[];
33: extern const char *types_RCSIds[];
1.115 parser 34: extern const char *parser3_RCSIds[];
1.113 parser 35: const char **RCSIds[]={
36: main_RCSIds,
1.116 parser 37: #ifdef USE_SMTP
1.113 parser 38: smtp_RCSIds,
1.114 parser 39: #endif
1.113 parser 40: gd_RCSIds,
41: classes_RCSIds,
42: types_RCSIds,
1.115 parser 43: parser3_RCSIds,
1.113 parser 44: 0
45: };
1.84 parser 46:
1.42 paf 47: /// IIS refuses to read bigger chunks
48: const size_t READ_POST_CHUNK_SIZE=0x400*0x400; // 1M
49:
1.45 paf 50: const char *argv0;
1.42 paf 51: Pool pool(0); // global pool [dont describe to doxygen: it confuses it with param names]
1.27 paf 52: bool cgi; ///< we were started as CGI?
1.5 paf 53:
1.40 paf 54: #ifdef WIN32
55: /// global system errors into parser exceptions converter
1.43 paf 56: static LONG WINAPI TopLevelExceptionFilter(struct _EXCEPTION_POINTERS *ExceptionInfo) {
1.5 paf 57: char buf[MAX_STRING];
58: if(ExceptionInfo && ExceptionInfo->ExceptionRecord) {
1.36 paf 59: struct _EXCEPTION_RECORD *er=ExceptionInfo->ExceptionRecord;
1.46 paf 60: snprintf(buf, MAX_STRING, "Exception 0x%X at %p",
1.31 paf 61: er->ExceptionCode,
62: er->ExceptionAddress);
1.5 paf 63: } else
64: strcpy(buf, "Exception <unknown>");
65:
66: PTHROW(0, 0,
67: 0,
68: buf);
69:
70: return EXCEPTION_EXECUTE_HANDLER; // never reached
71: }
1.27 paf 72: #endif
73:
1.46 paf 74: // SAPI
1.86 parser 75:
76: // appends to parser3.log located beside my binary if openable, to stderr otherwize
1.61 paf 77: void SAPI::log(Pool& pool, const char *fmt, ...) {
78: bool opened;
79: FILE *f=0;
80:
81: if(argv0) {
82: // beside by binary
83: char file_spec[MAX_STRING];
1.98 parser 84: strncpy(file_spec, argv0, MAX_STRING-1); file_spec[MAX_STRING-1]=0; // filespec of my binary
1.61 paf 85: rsplit(file_spec, '/'); rsplit(file_spec, '\\');// strip filename
86: strcat(file_spec, "/parser3.log");
87: f=fopen(file_spec, "at");
88: }
89: opened=f!=0;
90: if(!opened)
91: f=stderr;
92:
93: // prefix
94: time_t t=time(0);
95: const char *stamp=ctime(&t);
96: fprintf(f, "[%.*s] ", strlen(stamp)-1, stamp);
97: // message
98: va_list args;
99: va_start(args,fmt);
1.117 ! parser 100:
! 101: char buf[MAX_STRING];
! 102: size_t size=vsnprintf(buf, MAX_STRING, fmt, args);
! 103: remove_crlf(buf, buf+size);
! 104:
! 105: fwrite(buf, size, 1, f);
1.61 paf 106: va_end(args);
107: // newline
108: fprintf(f, "\n");
109:
110: if(opened)
111: fclose(f);
1.85 parser 112: else
113: fflush(f);
1.61 paf 114: }
115:
1.37 paf 116: const char *SAPI::get_env(Pool& pool, const char *name) {
1.109 parser 117: return getenv(name);
1.28 paf 118: }
119:
1.59 paf 120: size_t SAPI::read_post(Pool& pool, char *buf, size_t max_bytes) {
121: size_t read_size=0;
1.12 paf 122: do {
1.36 paf 123: int chunk_size=read(fileno(stdin),
1.42 paf 124: buf+read_size, min(READ_POST_CHUNK_SIZE, max_bytes-read_size));
1.12 paf 125: if(chunk_size<0)
126: break;
127: read_size+=chunk_size;
128: } while(read_size<max_bytes);
129:
130: return read_size;
1.10 paf 131: }
132:
1.37 paf 133: void SAPI::add_header_attribute(Pool& pool, const char *key, const char *value) {
1.68 paf 134: if(cgi)
1.20 paf 135: printf("%s: %s\n", key, value);
1.19 paf 136: }
137:
1.56 paf 138: /// @todo intelligent cache-control
1.37 paf 139: void SAPI::send_header(Pool& pool) {
1.33 paf 140: if(cgi) {
1.55 paf 141: puts("expires: Fri, 23 Mar 2001 09:32:23 GMT");
1.33 paf 142:
143: // header | body delimiter
1.20 paf 144: puts("");
1.33 paf 145: }
1.30 paf 146: }
1.20 paf 147:
1.53 paf 148: void SAPI::send_body(Pool& pool, const void *buf, size_t size) {
1.19 paf 149: stdout_write(buf, size);
1.58 paf 150: }
151:
1.97 parser 152: //
153:
154: char *full_file_spec(char *file_name) {
1.108 parser 155: if(file_name && !strchr(file_name, '/')) {
1.97 parser 156: static char cwd[MAX_STRING]; getcwd(cwd, MAX_STRING);
157: static char buf[MAX_STRING];
158: snprintf(buf, MAX_STRING, "%s/%s", cwd, file_name);
159: return buf;
160: }
161: return file_name;
162: }
163:
1.40 paf 164: /**
165: main workhorse
1.19 paf 166:
1.56 paf 167: @todo
1.40 paf 168: IIS: remove trailing default-document[index.html] from $request.uri.
169: to do that we need to consult metabase,
170: wich is tested but seems slow.
171: */
1.5 paf 172: int main(int argc, char *argv[]) {
1.109 parser 173: int result;
1.45 paf 174: argv0=argv[0];
175:
1.32 paf 176: umask(2);
177:
1.3 paf 178: // were we started as CGI?
1.20 paf 179: cgi=
1.109 parser 180: getenv("SERVER_SOFTWARE") ||
181: getenv("SERVER_NAME") ||
182: getenv("GATEWAY_INTERFACE") ||
183: getenv("REQUEST_METHOD");
1.5 paf 184:
1.10 paf 185: if(!cgi) {
186: if(argc<2) {
1.69 paf 187: printf(
1.100 parser 188: "Parser/%s Copyright(c) 2001 ArtLebedev Group(http://www.artlebedev.com)\n"
189: "Author: Alexander Petrosyan <paf@design.ru>(http://design.ru/paf)\n"
190: "\n"
191: "Usage: %s <file>\n",
1.69 paf 192: PARSER_VERSION,
193: argv0?argv0:"parser3");
1.67 paf 194: return 1;
1.10 paf 195: }
196: }
197:
1.100 parser 198: #ifdef WIN32
199: setmode(fileno(stdin), _O_BINARY);
200: setmode(fileno(stdout), _O_BINARY);
201: setmode(fileno(stderr), _O_BINARY);
202: #endif
203:
1.109 parser 204: char *filespec_to_process=cgi?getenv("PATH_TRANSLATED"):argv[1];
1.36 paf 205: #ifdef WIN32
1.43 paf 206: back_slashes_to_slashes(filespec_to_process);
1.36 paf 207: #endif
1.97 parser 208: filespec_to_process=full_file_spec(filespec_to_process);
1.10 paf 209:
1.109 parser 210: const char *request_method=getenv("REQUEST_METHOD");
1.35 paf 211: bool header_only=request_method && strcasecmp(request_method, "HEAD")==0;
1.5 paf 212: PTRY { // global try
213: // must be first in PTRY{}PCATCH
1.40 paf 214: #ifdef WIN32
1.5 paf 215: SetUnhandledExceptionFilter(&TopLevelExceptionFilter);
216: #endif
1.2 paf 217:
1.62 paf 218: // init socks
1.57 paf 219: init_socks(pool);
220:
1.73 paf 221: // init global classes
222: init_methoded_array(pool);
1.10 paf 223: // init global variables
1.37 paf 224: pa_globals_init(pool);
1.10 paf 225:
1.13 paf 226: if(!filespec_to_process)
227: PTHROW(0, 0,
228: 0,
1.68 paf 229: "Parser/%s", PARSER_VERSION);
1.13 paf 230:
1.10 paf 231: // Request info
232: Request::Info request_info;
1.39 paf 233: if(cgi) {
1.51 paf 234: if(const char *env_document_root=SAPI::get_env(pool, "DOCUMENT_ROOT"))
1.39 paf 235: request_info.document_root=env_document_root;
1.51 paf 236: else if(const char *path_info=SAPI::get_env(pool, "PATH_INFO")) {
1.40 paf 237: // IIS
1.39 paf 238: size_t len=strlen(filespec_to_process)-strlen(path_info);
1.40 paf 239: char *buf=(char *)pool.malloc(len+1);
1.98 parser 240: memcpy(buf, filespec_to_process, len); buf[len]=0;
1.39 paf 241: request_info.document_root=buf;
242: } else
243: PTHROW(0, 0,
244: 0,
1.43 paf 245: "CGI: no PATH_INFO defined(in reinventing DOCUMENT_ROOT)");
1.39 paf 246: } else {
247: static char buf[MAX_STRING];
1.98 parser 248: strncpy(buf, filespec_to_process, MAX_STRING-1); buf[MAX_STRING-1]=0;
1.70 paf 249: if(rsplit(buf, '/') || rsplit(buf, '\\')) // strip filename
250: request_info.document_root=buf;
251: else
252: request_info.document_root="";
1.13 paf 253: }
1.10 paf 254: request_info.path_translated=filespec_to_process;
1.107 parser 255: request_info.method=request_method ? request_method : "GET";
1.51 paf 256: const char *query_string=SAPI::get_env(pool, "QUERY_STRING");
1.40 paf 257: request_info.query_string=query_string;
1.68 paf 258: if(cgi) {
1.51 paf 259: if(const char *env_request_uri=SAPI::get_env(pool, "REQUEST_URI"))
1.42 paf 260: request_info.uri=env_request_uri;
1.51 paf 261: else if(const char *path_info=SAPI::get_env(pool, "PATH_INFO"))
1.42 paf 262: if(query_string) {
263: char *reconstructed_uri=(char *)malloc(
264: strlen(path_info)+1/*'?'*/+
265: strlen(query_string)+1/*0*/);
266: strcpy(reconstructed_uri, path_info);
267: strcat(reconstructed_uri, "?");
268: strcat(reconstructed_uri, query_string);
269: request_info.uri=reconstructed_uri;
270: } else
271: request_info.uri=path_info;
272: else
273: PTHROW(0, 0,
274: 0,
1.43 paf 275: "CGI: no PATH_INFO defined(in reinventing REQUEST_URI)");
1.68 paf 276:
1.72 paf 277: if(const char *script_name=SAPI::get_env(pool, "SCRIPT_NAME")) {
278: size_t script_name_len=strlen(script_name);
279: size_t uri_len=strlen(request_info.uri);
280: if(strncmp(request_info.uri,script_name, script_name_len)==0 &&
281: script_name_len != uri_len) // under IIS they are the same
282: PTHROW(0, 0,
283: 0,
284: "CGI: illegal call");
285: }
1.68 paf 286: } else
1.42 paf 287: request_info.uri=0;
1.40 paf 288:
1.51 paf 289: request_info.content_type=SAPI::get_env(pool, "CONTENT_TYPE");
290: const char *content_length=SAPI::get_env(pool, "CONTENT_LENGTH");
1.10 paf 291: request_info.content_length=(content_length?atoi(content_length):0);
1.51 paf 292: request_info.cookie=SAPI::get_env(pool, "HTTP_COOKIE");
293: request_info.user_agent=SAPI::get_env(pool, "HTTP_USER_AGENT");
1.10 paf 294:
1.5 paf 295: // prepare to process request
1.38 paf 296: Request request(pool,
1.10 paf 297: request_info,
1.91 parser 298: cgi ? String::UL_USER_HTML : String::UL_AS_IS
1.5 paf 299: );
300:
301: // some root-controlled location
1.102 parser 302: #ifdef SYSCONFDIR
1.111 parser 303: const char *root_config_filespec=SYSCONFDIR "/" CONFIG_FILE_NAME;
1.102 parser 304: #else
305: # ifdef WIN32
1.10 paf 306: // c:\windows
1.111 parser 307: char root_config_path[MAX_STRING];
308: GetWindowsDirectory(root_config_path, MAX_STRING);
309:
310: char root_config_filespec[MAX_STRING];
311: snprintf(root_config_filespec, MAX_STRING,
312: "%s/%s",
313: root_config_path, CONFIG_FILE_NAME);
1.101 parser 314: # else
1.102 parser 315: #error must be compiled either configure/make or MSVC++
1.101 parser 316: # endif
1.5 paf 317: #endif
318:
319: // beside by binary
1.111 parser 320: // @todo full path, not ./!
321: static char site_config_path[MAX_STRING];
322: strncpy(site_config_path, argv0, MAX_STRING-1); site_config_path[MAX_STRING-1]=0; // filespec of my binary
1.88 parser 323: if(!(
1.111 parser 324: rsplit(site_config_path, '/') ||
325: rsplit(site_config_path, '\\'))) { // strip filename
1.88 parser 326: // no path, just filename
1.111 parser 327: site_config_path[0]='.'; site_config_path[1]=0;
1.88 parser 328: }
1.111 parser 329:
330: char site_config_filespec[MAX_STRING];
331: snprintf(site_config_filespec, MAX_STRING,
332: "%s/%s",
333: site_config_path, CONFIG_FILE_NAME);
1.5 paf 334:
335: // process the request
1.35 paf 336: request.core(
1.111 parser 337: root_config_filespec, false,
338: site_config_filespec, false,
1.35 paf 339: header_only);
1.57 paf 340:
341: //
342: done_socks();
1.84 parser 343:
344: #ifdef DEBUG_POOL_MALLOC
1.78 parser 345: extern void log_pool_stats(Pool& pool);
346: log_pool_stats(pool);
1.84 parser 347: #endif
1.16 paf 348:
1.22 paf 349: // must be last in PTRY{}PCATCH
1.40 paf 350: #ifdef WIN32
1.5 paf 351: SetUnhandledExceptionFilter(0);
1.25 paf 352: #endif
1.100 parser 353:
1.16 paf 354: // successful finish
1.109 parser 355: result=0;
1.16 paf 356: } PCATCH(e) { // global problem
1.43 paf 357: // must be first in PCATCH{}
358: #ifdef WIN32
359: SetUnhandledExceptionFilter(0);
360: #endif
1.44 paf 361: // don't allocate anything on pool here:
362: // possible pool' exception not catch-ed now
363: // and there could be out-of-memory exception
1.43 paf 364:
1.19 paf 365: const char *body=e.comment();
1.44 paf 366: // log it
367: SAPI::log(pool, "exception in request exception handler: %s", body);
368:
369: //
1.19 paf 370: int content_length=strlen(body);
1.5 paf 371:
1.35 paf 372: // prepare header
1.37 paf 373: SAPI::add_header_attribute(pool, "content-type", "text/plain");
1.19 paf 374: char content_length_cstr[MAX_NUMBER];
1.60 paf 375: snprintf(content_length_cstr, MAX_NUMBER, "%u", content_length);
1.37 paf 376: SAPI::add_header_attribute(pool, "content-length", content_length_cstr);
1.35 paf 377:
378: // send header
1.37 paf 379: SAPI::send_header(pool);
1.19 paf 380:
381: // body
1.35 paf 382: if(!header_only)
1.37 paf 383: SAPI::send_body(pool, body, content_length);
1.94 parser 384:
1.16 paf 385: // unsuccessful finish
1.109 parser 386: result=1;
1.16 paf 387: }
388: PEND_CATCH
1.109 parser 389:
390: #ifndef WIN32
391: //
392: if(!cgi)
393: SAPI::send_body(pool, "\n", 1);
394: #endif
395: return result;
1.1 paf 396: }
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