Annotation of parser3/src/targets/apache13/mod_parser3.c, revision 1.10
1.2 paf 1: /** @file
2: Parser: apache 1.3 module, part, compiled by Apache.
3:
1.10 ! paf 4: Copyright (c) 2001-2004 ArtLebedev Group (http://www.artlebedev.com)
1.2 paf 5: Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
6: */
7:
1.10 ! paf 8: static const char * const IDENT_MOD_PARSER3_C="$Date: 2003/11/20 16:34:27 $";
1.6 paf 9:
10: #ifdef WIN32
11: #include <winsock2.h>
12: #endif
1.2 paf 13:
14: #include "httpd.h"
15: #include "http_config.h"
16: #include "http_core.h"
17: #include "http_log.h"
18: #include "http_main.h"
19: #include "http_protocol.h"
20: #include "util_script.h"
21: #include "ap_md5.h"
22: #include "ap_alloc.h"
23:
24: #include "pa_httpd.h"
25:
26: /*
27: * Declare ourselves so the configuration routines can find and know us.
28: * We'll fill it in at the end of the module.
29: */
30: extern module MODULE_VAR_EXPORT parser3_module;
31:
32: /*
33: * Locate our directory configuration record for the current request.
34: */
35: static Parser_module_config *our_dconfig(request_rec *r) {
36: return (Parser_module_config *)
37: ap_get_module_config(r->per_dir_config, &parser3_module);
38: }
39:
40: static const char* cmd_parser_config(cmd_parms *cmd, void *mconfig, char *file_spec) {
41: Parser_module_config *cfg = (Parser_module_config *) mconfig;
42:
43: // remember assigned filespec into cfg
44: cfg->parser_config_filespec=file_spec;
45:
46: return NULL;
47: }
48: static const char* cmd_parser_status_allowed(cmd_parms *cmd, void *mconfig, char *file_spec) {
49: //_asm int 3;
50: Parser_module_config *cfg = (Parser_module_config *) mconfig;
51:
52: cfg->parser_status_allowed=1;
53:
54: return NULL;
55: }
56:
57:
58: /*--------------------------------------------------------------------------*/
59: /* */
60: /* Now we declare our content handlers, which are invoked when the server */
61: /* encounters a document which our module is supposed to have a chance to */
62: /* see. (See mod_mime's SetHandler and AddHandler directives, and the */
63: /* mod_info and mod_status examples, for more details.) */
64: /* */
65: /* Since content handlers are dumping data directly into the connexion */
66: /* (using the r*() routines, such as rputs() and rprintf()) without */
67: /* intervention by other parts of the server, they need to make */
68: /* sure any accumulated HTTP headers are sent first. This is done by */
69: /* calling send_http_header(). Otherwise, no header will be sent at all, */
70: /* and the output sent to the client will actually be HTTP-uncompliant. */
71: /*--------------------------------------------------------------------------*/
72: /*
73: * Sample content handler. All this does is display the call list that has
74: * been built up so far.
75: *
76: * The return value instructs the caller concerning what happened and what to
77: * do next:
78: * OK ("we did our thing")
79: * DECLINED ("this isn't something with which we want to get involved")
80: * HTTP_mumble ("an error status should be reported")
81: */
82:
83:
84: /*--------------------------------------------------------------------------*/
85: /* */
86: /* Now let's declare routines for each of the callback phase in order. */
87: /* (That's the order in which they're listed in the callback list, *not */
88: /* the order in which the server calls them! See the command_rec */
89: /* declaration near the bottom of this file.) Note that these may be */
90: /* called for situations that don't relate primarily to our function - in */
91: /* other words, the fixup handler shouldn't assume that the request has */
92: /* to do with "example" stuff. */
93: /* */
94: /* With the exception of the content handler, all of our routines will be */
95: /* called for each request, unless an earlier handler from another module */
96: /* aborted the sequence. */
97: /* */
98: /* Handlers that are declared as "int" can return the following: */
99: /* */
100: /* OK Handler accepted the request and did its thing with it. */
101: /* DECLINED Handler took no action. */
102: /* HTTP_mumble Handler looked at request and found it wanting. */
103: /* */
104: /* What the server does after calling a module handler depends upon the */
105: /* handler's return value. In all cases, if the handler returns */
106: /* DECLINED, the server will continue to the next module with an handler */
107: /* for the current phase. However, if the handler return a non-OK, */
108: /* non-DECLINED status, the server aborts the request right there. If */
109: /* the handler returns OK, the server's next action is phase-specific; */
110: /* see the individual handler comments below for details. */
111: /* */
112: /*--------------------------------------------------------------------------*/
113:
114: static int parser_handler(request_rec *ar) {
115: // record clone
116: pa_request_rec lr={
117: ar,
118: ar->pool,
119: ar->header_only,
1.5 paf 120: &ar->status,
1.2 paf 121: ar->method,
122: ar->headers_out,
123: ar->subprocess_env,
1.7 paf 124: &ar->content_type,
1.2 paf 125: ar->uri,
126: ar->filename,
127: ar->path_info,
128: ar->args,
129: &ar->finfo
130: };
131:
132: // config
133: Parser_module_config *dcfg=our_dconfig(ar);
1.4 paf 134:
1.2 paf 135: return pa_parser_handler(&lr, dcfg);
136: }
137:
138: /*
139: * This function is called during server initialisation. Any information
140: * that needs to be recorded must be in static cells, since there's no
141: * configuration record.
142: *
143: * There is no return value.
144: */
145:
146: static void parser_server_init(server_rec *s, pool *p) {
147: #if MODULE_MAGIC_NUMBER >= 19980527
148: ap_add_version_component(pa_version());
149: #endif
150:
151: /*
152: * Set up any module cells that ought to be initialised.
153: */
154: pa_setup_module_cells();
155: }
156:
157: /*
158: * This function gets called to create a per-directory configuration
159: * record. This will be called for the "default" server environment, and for
160: * each directory for which the parser finds any of our directives applicable.
161: * If a directory doesn't have any of our directives involved (i.e., they
162: * aren't in the .htaccess file, or a <Location>, <Directory>, or related
163: * block), this routine will *not* be called - the configuration for the
164: * closest ancestor is used.
165: *
166: * The return value is a pointer to the created module-specific
167: * structure.
168: */
169: static void *parser_create_dir_config(pool *p, char *dirspec) {
170: //_asm int 3;
171: /*
172: * Allocate the space for our record from the pool supplied.
173: */
174: Parser_module_config *cfg=
175: (Parser_module_config *) ap_pcalloc(p, sizeof(Parser_module_config));
176: /*
177: * Now fill in the defaults. If there are any `parent' configuration
178: * records, they'll get merged as part of a separate callback.
179: */
180:
181: return (void *) cfg;
182: }
183:
184: /*
185: * This function gets called to merge two per-directory configuration
186: * records. This is typically done to cope with things like .htaccess files
187: * or <Location> directives for directories that are beneath one for which a
188: * configuration record was already created. The routine has the
189: * responsibility of creating a new record and merging the contents of the
190: * other two into it appropriately. If the module doesn't declare a merge
191: * routine, the record for the closest ancestor location (that has one) is
192: * used exclusively.
193: *
194: * The routine MUST NOT modify any of its arguments!
195: *
196: * The return value is a pointer to the created module-specific structure
197: * containing the merged values.
198:
199: 20011126 paf: noticed, that this is called even on virtual root merge with something "parent",
200: while thought that that is part of merge_server...
201:
202: */
203: static void *parser_merge_dir_config(pool *p, void *parent_conf,
204: void *newloc_conf) {
205: //_asm int 3;
206: Parser_module_config *merged_config =
207: (Parser_module_config *) ap_pcalloc(p, sizeof(Parser_module_config));
208: Parser_module_config *pconf = (Parser_module_config *) parent_conf;
209: Parser_module_config *nconf = (Parser_module_config *) newloc_conf;
210:
211: merged_config->parser_config_filespec = ap_pstrdup(p, nconf->parser_config_filespec?
212: nconf->parser_config_filespec:pconf->parser_config_filespec);
213: merged_config->parser_status_allowed=
214: pconf->parser_status_allowed ||
215: nconf->parser_status_allowed;
216:
217: /*
218: * Some things get copied directly from the more-specific record, rather
219: * than getting merged.
220: */
221:
222: return (void *) merged_config;
223: }
224:
225: /*
226: * This function gets called to create a per-server configuration
227: * record. It will always be called for the "default" server.
228: *
229: * The return value is a pointer to the created module-specific
230: * structure.
231: */
232: static void *parser_create_server_config(pool *p, server_rec *s) {
233: //_asm int 3;
234: /*
235: * As with the parser_create_dir_config() routine, we allocate and fill
236: * in an empty record.
237: */
238: Parser_module_config *cfg=
239: (Parser_module_config *) ap_pcalloc(p, sizeof(Parser_module_config));
240:
241: return (void *) cfg;
242: }
243:
244: /*
245: * This function gets called to merge two per-server configuration
246: * records. This is typically done to cope with things like virtual hosts and
247: * the default server configuration The routine has the responsibility of
248: * creating a new record and merging the contents of the other two into it
249: * appropriately. If the module doesn't declare a merge routine, the more
250: * specific existing record is used exclusively.
251: *
252: * The routine MUST NOT modify any of its arguments!
253: *
254: * The return value is a pointer to the created module-specific structure
255: * containing the merged values.
256: */
257: static void *parser_merge_server_config(pool *p, void *server1_conf,
258: void *server2_conf)
259: {
260: //_asm int 3;
261:
262: Parser_module_config *merged_config =
263: (Parser_module_config *) ap_pcalloc(p, sizeof(Parser_module_config));
264: Parser_module_config *s1conf = (Parser_module_config *) server1_conf;
265: Parser_module_config *s2conf = (Parser_module_config *) server2_conf;
266:
267: /*
268: * Our inheritance rules are our own, and part of our module's semantics.
269: * Basically, just note whence we came.
270: */
271: merged_config->parser_config_filespec = ap_pstrdup(p, s2conf->parser_config_filespec?
272: s2conf->parser_config_filespec:s1conf->parser_config_filespec);
273: merged_config->parser_status_allowed=
274: s1conf->parser_status_allowed ||
275: s2conf->parser_status_allowed;
276:
277: return (void *) merged_config;
278: }
279:
280: /*
281: * This routine gives our module an opportunity to translate the URI into an
282: * actual filename. If we don't do anything special, the server's default
283: * rules (Alias directives and the like) will continue to be followed.
284: *
285: * The return value is OK, DECLINED, or HTTP_mumble. If we return OK, no
286: * further modules are called for this phase.
287: */
288: static int parser_translate_handler(request_rec *r) {
289: Parser_module_config *cfg=our_dconfig(r);
290: return DECLINED;
291: }
292:
293: /*
294: * This routine is called to check the authentication information sent with
295: * the request (such as looking up the user in a database and verifying that
296: * the [encrypted] password sent matches the one in the database).
297: *
298: * The return value is OK, DECLINED, or some HTTP_mumble error (typically
299: * HTTP_UNAUTHORIZED). If we return OK, no other modules are given a chance
300: * at the request during this phase.
301: */
302: static int parser_check_user_id(request_rec *r) {
303: Parser_module_config *cfg=our_dconfig(r);
304: return DECLINED;
305: }
306:
307: /*
308: * This routine is called to check to see if the resource being requested
309: * requires authorisation.
310: *
311: * The return value is OK, DECLINED, or HTTP_mumble. If we return OK, no
312: * other modules are called during this phase.
313: *
314: * If *all* modules return DECLINED, the request is aborted with a server
315: * error.
316: */
317: static int parser_auth_checker(request_rec *r) {
318: Parser_module_config *cfg=our_dconfig(r);
319: return DECLINED;
320: }
321:
322: /*
323: * This routine is called to check for any module-specific restrictions placed
324: * upon the requested resource. (See the mod_access module for an example.)
325: *
326: * The return value is OK, DECLINED, or HTTP_mumble. All modules with an
327: * handler for this phase are called regardless of whether their predecessors
328: * return OK or DECLINED. The first one to return any other status, however,
329: * will abort the sequence (and the request) as usual.
330: */
331: static int parser_access_checker(request_rec *r) {
332:
333: Parser_module_config *cfg=our_dconfig(r);
334: return DECLINED;
335: }
336:
337: /*--------------------------------------------------------------------------*/
338: /* */
339: /* All of the routines have been declared now. Here's the list of */
340: /* directives specific to our module, and information about where they */
341: /* may appear and how the command parser should pass them to us for */
342: /* processing. Note that care must be taken to ensure that there are NO */
343: /* collisions of directive names between modules. */
344: /* */
345: /*--------------------------------------------------------------------------*/
346: /*
347: * List of directives specific to our module.
348: */
349: static const command_rec parser_cmds[] =
350: {
351: {
352: "ParserConfig", /* directive name */
353: (const char* (*)(void))((void *)cmd_parser_config), // config action routine
354: (void*)0, /* argument to include in call */
355: (int)(OR_OPTIONS), /* where available */
356: TAKE1, /* arguments */
357: "Parser config filespec" // directive description
358: },
359: {
360: "ParserStatusAllowed", /* directive name */
361: (const char* (*)(void))((void *)cmd_parser_status_allowed), // config action routine
362: (void*)0, /* argument to include in call */
363: (int)(ACCESS_CONF), /* where available */
364: NO_ARGS, /* arguments */
365: "Parser status class can be used" // directive description
366: },
367: {NULL}
368: };
369:
370: /*--------------------------------------------------------------------------*/
371: /* */
372: /* Now the list of content handlers available from this module. */
373: /* */
374: /*--------------------------------------------------------------------------*/
375: /*
376: * List of content handlers our module supplies. Each handler is defined by
377: * two parts: a name by which it can be referenced (such as by
378: * {Add,Set}Handler), and the actual routine name. The list is terminated by
379: * a NULL block, since it can be of variable length.
380: *
381: * Note that content-handlers are invoked on a most-specific to least-specific
382: * basis; that is, a handler that is declared for "text/plain" will be
383: * invoked before one that was declared for "text / *". Note also that
384: * if a content-handler returns anything except DECLINED, no other
385: * content-handlers will be called.
386: */
387: static const handler_rec parser_handlers[] =
388: {
389: {"parser3-handler", parser_handler},
390: {NULL}
391: };
392:
393: /*--------------------------------------------------------------------------*/
394: /* */
395: /* Finally, the list of callback routines and data structures that */
396: /* provide the hooks into our module from the other parts of the server. */
397: /* */
398: /*--------------------------------------------------------------------------*/
399: /*
400: * Module definition for configuration. If a particular callback is not
401: * needed, replace its routine name below with the word NULL.
402: *
403: * The number in brackets indicates the order in which the routine is called
404: * during request processing. Note that not all routines are necessarily
405: * called (such as if a resource doesn't have access restrictions).
406: */
407: module MODULE_VAR_EXPORT parser3_module =
408: {
409: STANDARD_MODULE_STUFF,
410: parser_server_init, /* module initializer */
411: parser_create_dir_config, /* per-directory config creator */
412: parser_merge_dir_config, /* dir config merger */
413: parser_create_server_config, /* server config creator */
414: parser_merge_server_config, /* server config merger */
415: parser_cmds, /* command table */
416: parser_handlers, /* [9] list of handlers */
417: parser_translate_handler, /* [2] filename-to-URI translation */
418: parser_check_user_id, /* [5] check/validate user_id */
419: parser_auth_checker, /* [6] check user_id is valid *here* */
420: parser_access_checker, /* [4] check access by host address */
421: 0, /* [7] MIME type checker/setter */
422: 0, /* [8] fixups */
423: 0 /* [10] logger */
424: };
425:
426: #if defined(_MSC_VER)
1.8 paf 427: # define APACHE_WIN32_SRC "../../../../win32/apache13/src"
1.2 paf 428: # ifdef _DEBUG
429: # pragma comment(lib, APACHE_WIN32_SRC "/CoreD/ApacheCore.lib")
430: # else
431: # pragma comment(lib, APACHE_WIN32_SRC "/CoreR/ApacheCore.lib")
432: # endif
433: #endif
434:
435:
436: // interface to C++
437:
438: #define PA_APLOG_EMERG 0 /* system is unusable */
439: #define PA_APLOG_ALERT 1 /* action must be taken immediately */
440: #define PA_APLOG_CRIT 2 /* critical conditions */
441: #define PA_APLOG_ERR 3 /* error conditions */
442: #define PA_APLOG_WARNING 4 /* warning conditions */
443: #define PA_APLOG_NOTICE 5 /* normal but significant condition */
444: #define PA_APLOG_INFO 6 /* informational */
445: #define PA_APLOG_DEBUG 7 /* debug-level messages */
446:
447: #define PA_APLOG_LEVELMASK 7 /* mask off the level value */
448:
449: #define PA_APLOG_NOERRNO (PA_APLOG_LEVELMASK + 1)
450:
451: #define PA_APLOG_MARK __FILE__,__LINE__
452:
453: void pa_ap_log_rerror(const char *file, int line, int level,
454: const pa_request_rec *s, const char *fmt, ...) {
455: const char* str;
456: va_list l;
457: va_start(l, fmt);
458: str=va_arg(l, const char*);
459: va_end(l);
460:
461: ap_log_rerror(file, line, level,
462: (request_rec*)s->real_request_rec, "%s", str);
463: }
464:
465:
466: void pa_ap_log_error(const char *file, int line, int level,
467: const pa_server_rec *s, const char *fmt, ...) {
468: const char* str;
469: va_list l;
470: va_start(l, fmt);
471: str=va_arg(l, const char*);
472: va_end(l);
473:
474: ap_log_error(file, line, level,
475: (server_rec*)s, "%s", str);
476: }
477:
478: // ap_alloc.h
479:
480: const char* pa_ap_table_get(const pa_table *t, const char *name) {
481: return ap_table_get((const table*)t, name);
482: }
483: void pa_ap_table_addn(pa_table *t, const char *name, const char *val) {
484: ap_table_addn((table*)t, name, val);
485: }
486:
487: int pa_ap_table_size(const pa_table *t) {
488: return ap_table_elts((const table*)t)->nelts;
489: }
490:
491: void pa_ap_table_do(int (*comp) (void *, const char *, const char *),
492: void *rec, const pa_table *t, ...) {
493: ap_table_do(comp, rec, (table*)t, 0);
494: }
495:
496: char * pa_ap_pstrdup(pa_pool *p, const char *s) {
497: return ap_pstrdup((pool*)p, s);
498: }
499:
500: // http_protocol.h
501:
502: int pa_ap_setup_client_block(pa_request_rec *r, int read_policy) {
503: return ap_setup_client_block((request_rec*)r->real_request_rec,
504: read_policy);
505: }
506: int pa_ap_should_client_block(pa_request_rec *r) {
507: return ap_should_client_block((request_rec*)r->real_request_rec);
508: }
509: long pa_ap_get_client_block(pa_request_rec *r, char *buffer, int bufsiz) {
510: return ap_get_client_block((request_rec*)r->real_request_rec,
511: buffer, bufsiz);
512: }
513: void pa_ap_send_http_header(pa_request_rec *r) {
514: ap_send_http_header((request_rec*)r->real_request_rec);
515: }
516: int pa_ap_rwrite(const void *buf, int nbyte, pa_request_rec *r) {
517: return ap_rwrite(buf, nbyte, (request_rec*)r->real_request_rec);
518: }
519:
520:
521: // http_main.h
522:
523: void pa_ap_hard_timeout(char *s, pa_request_rec *r) {
524: ap_hard_timeout(s, (request_rec*)r->real_request_rec);
525: }
526: void pa_ap_reset_timeout(pa_request_rec *r) {
527: ap_reset_timeout((request_rec*)r->real_request_rec);
528: }
529: void pa_ap_kill_timeout(pa_request_rec *r) {
530: ap_kill_timeout((request_rec*)r->real_request_rec);
531: }
532:
533:
534: // util_script.h
535:
536: void pa_ap_add_cgi_vars(pa_request_rec *r) {
537: ap_add_cgi_vars((request_rec*)r->real_request_rec);
538: }
539: void pa_ap_add_common_vars(pa_request_rec *r) {
540: ap_add_common_vars((request_rec*)r->real_request_rec);
541: }
542:
543:
544: // ap_md5.h
545:
546: void pa_MD5Init(PA_MD5_CTX *context) { ap_MD5Init((AP_MD5_CTX*)context); }
547: void pa_MD5Update(PA_MD5_CTX *context, const unsigned char *input,
548: unsigned int inputLen) { ap_MD5Update((AP_MD5_CTX *)context, input, inputLen); }
549: void pa_MD5Final(unsigned char digest[MD5_DIGESTSIZE],
550: PA_MD5_CTX *context) { ap_MD5Final(digest, (AP_MD5_CTX *)context); }
551: void pa_MD5Encode(const unsigned char *password,
552: const unsigned char *salt,
553: char *result, size_t nbytes) { ap_MD5Encode(password, salt, result, nbytes); }
554: void pa_to64(char *s, unsigned long v, int n) { ap_to64(s, v, n); }
555:
556:
557: // signal.h
558:
559: void (*pa_signal (int sig, void (*disp)(int)))(int) {
560: if(sig==PA_SIGPIPE && disp==PA_SIG_IGN)
561: return signal(SIGPIPE, SIG_IGN);
562:
563: return 0;
564: }
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