5 * \defgroup Subst Variable substitution type stuff
6 * \ingroup CitadelConfig
12 #include <sys/types.h>
19 #include "webserver.h"
21 HashList *WirelessTemplateCache;
22 HashList *WirelessLocalTemplateCache;
23 HashList *TemplateCache;
24 HashList *LocalTemplateCache;
26 typedef struct _TemplateToken {
27 const char *pTokenStart;
30 const char *pTokenEnd;
37 size_t ParamStart [10];
41 typedef struct _WCTemplate {
45 WCTemplateToken **Tokens;
50 typedef struct _HashHandler {
54 typedef int (*HandlerFunc)(int nArgs, va_list vaarg);
55 void RegisterNS(const char *NSName, int nMinArgs, int nMaxArgs, HandlerFunc Handler)
62 * \brief debugging function to print array to log
64 void VarPrintTransition(void *vVar1, void *vVar2, int odd){}
66 * \brief debugging function to print array to log
68 void VarPrintEntry(const char *Key, void *vSubst, int odd)
71 lprintf(1,"Subst[%s] : ", Key);
72 ptr = (wcsubst*) vSubst;
74 switch(ptr->wcs_type) {
76 lprintf(1, " -> %s\n", ptr->wcs_value);
79 lprintf(1, " -> Server [%s]\n", ptr->wcs_value);
82 lprintf(1, " -> function at [%0xd]\n", ptr->wcs_function);
85 lprintf(1," WARNING: invalid type: [%ld]!\n", ptr->wcs_type);
92 * \brief Clear out the list of substitution variables local to this session
94 void clear_substs(struct wcsession *wc) {
96 if (wc->vars != NULL) {
98 DeleteHash(&wc->vars);
103 * \brief Clear out the list of substitution variables local to this session
105 void clear_local_substs(void) {
110 * \brief destructor; kill one entry.
112 void deletevar(void *data)
114 wcsubst *ptr = (wcsubst*)data;
115 // if ((wc->vars->wcs_type == WCS_STRING)
116 // || (wc->vars->wcs_type == WCS_SERVCMD)) {
117 if (ptr->wcs_type != WCS_FUNCTION)
118 free(ptr->wcs_value);
123 * \brief Add a substitution variable (local to this session) (strlen version...)
124 * \param keyname the replacementstring to substitute
125 * \param keytype the kind of the key
126 * \param format the format string ala printf
127 * \param ... the arguments to substitute in the formatstring
129 void SVPRINTF(char *keyname, int keytype, const char *format,...)
136 struct wcsession *WCC = WC;
138 keylen = strlen(keyname);
140 * First look if we're doing a replacement of
143 /*PrintHash(WCC->vars, VarPrintTransition, VarPrintEntry);*/
144 if (GetHash(WCC->vars, keyname, keylen, &vPtr)) {
145 ptr = (wcsubst*)vPtr;
146 if (ptr->wcs_value != NULL)
147 free(ptr->wcs_value);
149 else /** Otherwise allocate a new one */
151 ptr = (wcsubst *) malloc(sizeof(wcsubst));
152 safestrncpy(ptr->wcs_key, keyname, sizeof ptr->wcs_key);
153 Put(WCC->vars, keyname, keylen, ptr, deletevar);
156 /** Format the string and save it */
158 va_start(arg_ptr, format);
159 vsnprintf(wbuf, sizeof wbuf, format, arg_ptr);
162 ptr->wcs_function = NULL;
163 ptr->wcs_type = keytype;
164 ptr->wcs_value = strdup(wbuf);
168 * \brief Add a substitution variable (local to this session)
169 * \param keyname the replacementstring to substitute
170 * \param keytype the kind of the key
171 * \param format the format string ala printf
172 * \param ... the arguments to substitute in the formatstring
174 void svprintf(char *keyname, size_t keylen, int keytype, const char *format,...)
180 struct wcsession *WCC = WC;
184 * First look if we're doing a replacement of
187 /*PrintHash(WCC->vars, VarPrintTransition, VarPrintEntry);*/
188 if (GetHash(WCC->vars, keyname, keylen, &vPtr)) {
189 ptr = (wcsubst*)vPtr;
190 if (ptr->wcs_value != NULL)
191 free(ptr->wcs_value);
193 else /** Otherwise allocate a new one */
195 ptr = (wcsubst *) malloc(sizeof(wcsubst));
196 safestrncpy(ptr->wcs_key, keyname, sizeof ptr->wcs_key);
197 Put(WCC->vars, keyname, keylen, ptr, deletevar);
200 /** Format the string and save it */
202 va_start(arg_ptr, format);
203 len = vsnprintf(wbuf, sizeof wbuf, format, arg_ptr);
206 ptr->wcs_value = (char*) malloc(len + 1);
207 memcpy(ptr->wcs_value, wbuf, len + 1);
208 ptr->wcs_function = NULL;
209 ptr->wcs_type = keytype;
213 * \brief Add a substitution variable (local to this session)
214 * \param keyname the replacementstring to substitute
215 * \param keytype the kind of the key
216 * \param format the format string ala printf
217 * \param ... the arguments to substitute in the formatstring
219 void SVPut(char *keyname, size_t keylen, int keytype, char *Data)
223 struct wcsession *WCC = WC;
227 * First look if we're doing a replacement of
230 /*PrintHash(WCC->vars, VarPrintTransition, VarPrintEntry);*/
231 if (GetHash(WCC->vars, keyname, keylen, &vPtr)) {
232 ptr = (wcsubst*)vPtr;
233 if (ptr->wcs_value != NULL)
234 free(ptr->wcs_value);
236 else /** Otherwise allocate a new one */
238 ptr = (wcsubst *) malloc(sizeof(wcsubst));
239 safestrncpy(ptr->wcs_key, keyname, sizeof ptr->wcs_key);
240 Put(WCC->vars, keyname, keylen, ptr, deletevar);
243 ptr->wcs_function = NULL;
244 ptr->wcs_type = keytype;
245 ptr->wcs_value = strdup(Data);
249 * \brief Add a substitution variable (local to this session) that does a callback
250 * \param keyname the keystring to substitute
251 * \param fcn_ptr the function callback to give the substitution string
253 void SVCallback(char *keyname, size_t keylen, var_callback_fptr fcn_ptr)
257 struct wcsession *WCC = WC;
260 * First look if we're doing a replacement of
263 /*PrintHash(WCC->vars, VarPrintTransition, VarPrintEntry);*/
264 if (GetHash(WCC->vars, keyname, keylen, &vPtr)) {
265 ptr = (wcsubst*)vPtr;
266 if (ptr->wcs_value != NULL)
267 free(ptr->wcs_value);
269 else /** Otherwise allocate a new one */
271 ptr = (wcsubst *) malloc(sizeof(wcsubst));
272 safestrncpy(ptr->wcs_key, keyname, sizeof ptr->wcs_key);
273 Put(WCC->vars, keyname, keylen, ptr, deletevar);
276 ptr->wcs_value = NULL;
277 ptr->wcs_type = WCS_FUNCTION;
278 ptr->wcs_function = fcn_ptr;
280 inline void SVCALLBACK(char *keyname, var_callback_fptr fcn_ptr)
282 SVCallback(keyname, strlen(keyname), fcn_ptr);
288 * \brief back end for print_value_of() ... does a server command
289 * \param servcmd server command to execute on the citadel server
291 void pvo_do_cmd(char *servcmd) {
295 serv_getln(buf, sizeof buf);
301 wprintf("%s\n", &buf[4]);
307 wprintf("%s\n", &buf[4]);
314 * \brief Print the value of a variable
315 * \param keyname get a key to print
317 void print_value_of(const char *keyname, size_t keylen) {
318 struct wcsession *WCC = WC;
323 /*if (WCC->vars != NULL) PrintHash(WCC->vars, VarPrintTransition, VarPrintEntry);*/
324 if (keyname[0] == '=') {
325 DoTemplate(keyname+1, keylen - 1);
327 /** Page-local variables */
328 if ((WCC->vars!= NULL) && GetHash(WCC->vars, keyname, keylen, &vVar)) {
329 ptr = (wcsubst*) vVar;
330 switch(ptr->wcs_type) {
332 wprintf("%s", (const char*)ptr->wcs_value);
335 pvo_do_cmd(ptr->wcs_value);
338 (*ptr->wcs_function) ();
341 lprintf(1,"WARNING: invalid value in SV-Hash at %s!", keyname);
346 ch = keyname[keylen];
347 ((char*) keyname)[keylen] = '\0'; ////TODO
348 if (!strcasecmp(keyname, "SERV_PID")) {
349 wprintf("%d", WCC->ctdl_pid);
352 else if (!strcasecmp(keyname, "SERV_NODENAME")) {
353 escputs(serv_info.serv_nodename);
356 else if (!strcasecmp(keyname, "SERV_HUMANNODE")) {
357 escputs(serv_info.serv_humannode);
360 else if (!strcasecmp(keyname, "SERV_FQDN")) {
361 escputs(serv_info.serv_fqdn);
364 else if (!strcasecmp(keyname, "SERV_SOFTWARE")) {
365 escputs(serv_info.serv_software);
368 else if (!strcasecmp(keyname, "SERV_REV_LEVEL")) {
370 serv_info.serv_rev_level / 100,
371 serv_info.serv_rev_level % 100
375 else if (!strcasecmp(keyname, "SERV_BBS_CITY")) {
376 escputs(serv_info.serv_bbs_city);
379 else if (!strcasecmp(keyname, "CURRENT_USER")) {
380 escputs(WCC->wc_fullname);
383 else if (!strcasecmp(keyname, "CURRENT_ROOM")) {
384 escputs(WCC->wc_roomname);
386 ((char*) keyname)[keylen] = ch;//// TODO
392 extern char *static_dirs[PATH_MAX]; /**< Disk representation */
395 void PutNewToken(WCTemplate *Template, WCTemplateToken *NewToken)
397 if (Template->nTokensUsed + 1 >= Template->TokenSpace) {
398 if (Template->TokenSpace <= 0) {
399 Template->Tokens = (WCTemplateToken**)malloc(
400 sizeof(WCTemplateToken*) * 10);
401 Template->TokenSpace = 10;
404 WCTemplateToken **NewTokens;
405 NewTokens= (WCTemplateToken**)malloc(
406 sizeof(WCTemplateToken*) *
407 Template->TokenSpace * 2);
408 memcpy(NewTokens, Template->Tokens,
409 sizeof(WCTemplateToken) * Template->nTokensUsed);
410 free(Template->Tokens);
411 Template->TokenSpace *= 2;
412 Template->Tokens = NewTokens;
417 Template->Tokens[(Template->nTokensUsed)++] = NewToken;
420 WCTemplateToken *NewTemlpateSubstitute(const char *pStart, const char *pTmplStart, const char *pTmplEnd)
422 WCTemplateToken *NewToken = (WCTemplateToken*)malloc(sizeof(WCTemplateToken));
424 NewToken->pTokenStart = pTmplStart;
425 NewToken->TokenStart = pTmplStart - pStart;
426 NewToken->TokenEnd = (pTmplEnd - pStart) - NewToken->TokenStart;
427 NewToken->pTokenEnd = pTmplEnd;
429 NewToken->pName = pTmplStart + 2;
430 NewToken->NameEnd = NewToken->TokenEnd - 2;
431 NewToken->HaveParameters = 0;;
432 NewToken->nParameters = 0;
433 NewToken->ParamStart[0] = 0;
434 NewToken->ParamEnd[0] = 0;
438 void FreeWCTemplate(void *vFreeMe)
441 WCTemplate *FreeMe = (WCTemplate*)vFreeMe;
443 if (FreeMe->TokenSpace > 0) {
444 for (i = 0; i < FreeMe->nTokensUsed; i ++) {
445 free(FreeMe->Tokens[i]);
447 free(FreeMe->Tokens);
452 void EvaluateToken(StrBuf *Target, WCTemplateToken *Token)
457 print_value_of(Token->pName, Token->NameEnd);
461 void ProcessTemplate(WCTemplate *Tmpl, StrBuf *Target)
465 const char *pData, *pS;
468 pS = pData = ChrPtr(Tmpl->Data);
469 len = StrLength(Tmpl->Data);
472 if (i >= Tmpl->nTokensUsed) {
473 StrBufAppendBufPlain(Target, pData, len, 0);
477 StrBufAppendBufPlain(
479 Tmpl->Tokens[i]->pTokenStart - pData, 0);
480 EvaluateToken(Target, Tmpl->Tokens[i]);
481 pData = Tmpl->Tokens[i++]->pTokenEnd + 1;
490 * \brief Display a variable-substituted template
491 * \param templatename template file to load
493 void *load_template(StrBuf *filename, StrBuf *Key, HashList *PutThere)
497 const char *pS, *pE, *pch, *Err;
499 WCTemplate *NewTemplate;
501 fd = open(ChrPtr(filename), O_RDONLY);
503 wprintf(_("ERROR: could not open template "));
504 wprintf("'%s' - %s<br />\n",
505 ChrPtr(filename), strerror(errno));
509 if (fstat(fd, &statbuf) == -1) {
510 wprintf(_("ERROR: could not stat template "));
511 wprintf("'%s' - %s<br />\n",
512 ChrPtr(filename), strerror(errno));
516 NewTemplate = (WCTemplate *) malloc(sizeof(WCTemplate));
517 NewTemplate->Data = NewStrBufPlain(NULL, statbuf.st_size);
518 NewTemplate->nTokensUsed = 0;
519 NewTemplate->TokenSpace = 0;
520 NewTemplate->Tokens = NULL;
521 if (StrBufReadBLOB(NewTemplate->Data, &fd, 1, statbuf.st_size, &Err) < 0) {
523 FreeWCTemplate(NewTemplate);
524 wprintf(_("ERROR: reading template "));
525 wprintf("'%s' - %s<br />\n",
526 ChrPtr(filename), strerror(errno));
531 pS = pch = ChrPtr(NewTemplate->Data);
532 pE = pS + StrLength(NewTemplate->Data);
534 const char *pts, *pte;
536 int InDoubleQuotes = 0;
538 for (; pch < pE; pch ++) {
539 if ((*pch=='<')&&(*(pch + 1)=='?'))
545 for (; pch < pE - 1; pch ++) {
547 InDoubleQuotes = ! InDoubleQuotes;
548 else if (*pch == '\'')
549 InQuotes = ! InQuotes;
550 else if ((!InQuotes && !InDoubleQuotes) &&
551 ((*pch!='\\')&&(*(pch + 1)=='>'))) {
559 PutNewToken(NewTemplate, NewTemlpateSubstitute(pS, pts, pte));
562 Put(PutThere, ChrPtr(Key), StrLength(Key), NewTemplate, FreeWCTemplate);
567 * \brief Display a variable-substituted template
568 * \param templatename template file to load
570 void DoTemplate(const char *templatename, long len)
573 HashList *StaticLocal;
577 Static = WirelessTemplateCache;
578 StaticLocal = WirelessLocalTemplateCache;
581 Static = TemplateCache;
582 StaticLocal = LocalTemplateCache;
585 if (!GetHash(StaticLocal, templatename, len, &vTmpl) &&
586 !GetHash(Static, templatename, len, &vTmpl)) {
587 printf ("didn't find %s\n", templatename);
592 ProcessTemplate(vTmpl, WC->WBuf);
596 int LoadTemplateDir(const char *DirName, HashList *wireless, HashList *big)
602 struct dirent *filedir_entry;
608 StrBufPrintf(Dir, "%s/t", DirName);
609 filedir = opendir (ChrPtr(Dir));
610 if (filedir == NULL) {
614 FileName = NewStrBuf();
616 while ((filedir_entry = readdir(filedir)))
620 #ifdef _DIRENT_HAVE_D_NAMELEN
621 d_namelen = filedir_entry->d_namelen;
623 d_namelen = strlen(filedir_entry->d_name);
625 d_without_ext = d_namelen;
626 while ((d_without_ext > 0) && (filedir_entry->d_name[d_without_ext] != '.'))
628 if ((d_without_ext == 0) || (d_namelen < 3))
631 IsMobile = (strstr(filedir_entry->d_name, ".m.html")!= NULL);
632 PStart = filedir_entry->d_name;
633 StrBufPrintf(FileName, "%s/t/%s", ChrPtr(Dir), filedir_entry->d_name);
634 MinorPtr = strchr(filedir_entry->d_name, '.');
635 if (MinorPtr != NULL)
637 StrBufPlain(Tag, filedir_entry->d_name, MinorPtr - filedir_entry->d_name);
640 printf("%s %d %s\n",ChrPtr(FileName), IsMobile, ChrPtr(Tag));
641 load_template(FileName, Tag, (IsMobile)?wireless:big);
644 FreeStrBuf(&FileName);
650 void InitTemplateCache(void)
653 LoadTemplateDir(static_dirs[0],
654 WirelessTemplateCache,
656 LoadTemplateDir(static_dirs[1],
657 WirelessLocalTemplateCache,