/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- * * The contents of this file are subject to the Netscape Public * License Version 1.1 (the "License"); you may not use this file * except in compliance with the License. You may obtain a copy of * the License at http://www.mozilla.org/NPL/ * * Software distributed under the License is distributed on an "AS * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or * implied. See the License for the specific language governing * rights and limitations under the License. * * The Original Code is mozilla.org code. * * The Initial Developer of the Original Code is Netscape * Communications Corporation. Portions created by Netscape are * Copyright (C) 1998 Netscape Communications Corporation. All * Rights Reserved. * * Contributor(s): */ #include "pa_parse.h" #include #include "pa_tags.h" #include "libmocha.h" /* For JavaScript conditional HTML comments */ #ifdef PROFILE #pragma profile on #endif #define NAME_LIST_INC 5 /* step to increase tag name/value arrays by */ static char *pa_token_to_name[] = { #include "pa_hash.rmap" }; /************* * Used by layout/laytags.c if MOCHA_CACHES_WRITES is defined. **************/ const char * pa_PrintTagToken(int32 token) { if ((uint32)token >= P_MAX) { return "UNKNOWN"; } return pa_token_to_name[token]; } /************************************* * Function: pa_CloneMDLTag * * Description: This function allocates and fills in an entire * PA_Tag structure for any MDL tag element type. * * Params: The tag to clone * * Returns: A pointer to a completely filled in PA_Tag structure * that is a clone of the tag passed in. On failure it * returns NULL. *************************************/ PA_Tag * PA_CloneMDLTag(PA_Tag * src) { PA_Tag *tag; PA_Block buff; char *locked_buff, *src_buff; /* * Allocate a new tag structure, return NULL * if you can't. */ tag = XP_NEW(PA_Tag); if (tag == NULL) { return(NULL); } tag->type = src->type; tag->is_end = src->is_end; tag->newline_count = src->newline_count; tag->data_len = src->data_len; tag->true_len = src->true_len; tag->lo_data = NULL; tag->next = NULL; /* sure wish we could just do a strdup() here */ buff = PA_ALLOC((tag->data_len + 1) * sizeof(char)); if (buff != NULL) { PA_LOCK(locked_buff, char *, buff); PA_LOCK(src_buff, char *, src->data); XP_BCOPY(src_buff, locked_buff, tag->data_len); locked_buff[tag->data_len] = '\0'; PA_UNLOCK(locked_buff); PA_UNLOCK(src_buff); } else { XP_DELETE(tag); return(NULL); } tag->data = buff; return(tag); } /************************************* * Function: pa_CreateMDLTag * * Description: This function allocates and fills in an entire * PA_Tag structure for any MDL tag element type. * * Params: Takes a buffer containing a complete tag element string, * and a length for that buffer. The buffer is NOT a \0 * terminated string. * * Returns: A pointer to a completely filled in PA_Tag structure * created based on the data contained in the passed * tag element string. On failure it returns NULL. *************************************/ PA_Tag * pa_CreateMDLTag(pa_DocData *doc_data, char *buf, int32 len) { PA_Tag *tag; char *start; char *tptr; char tchar; int32 cnt; PA_Block buff; char *locked_buff; int32 blen; /* * Allocate a new tag structure, return NULL * if you can't. */ tag = XP_NEW(PA_Tag); if (tag == NULL) { return(NULL); } tag->lo_data = NULL; tag->newline_count = doc_data->newline_count; /* * Find the start of the tag element text */ tptr = buf; tptr++; /* skip the '<' */ cnt = 1; /* * Check if this is an end tag */ if (*tptr == '/') { tag->is_end = TRUE; tptr++; cnt++; } else { tag->is_end = FALSE; } start = tptr; /* * Find the end of the tag element text */ while ((*tptr != '>')&&(!XP_IS_SPACE(*tptr))) { tptr++; cnt++; /* * Reach the end of the tag but find no end */ if (cnt == len) { XP_DELETE(tag); return(NULL); } } /* * Temporarily null ternimate the string to do * the string compares. */ tchar = *tptr; *tptr = '\0'; tag->type = pa_tokenize_tag(start); *tptr = tchar; /* * For UNKNOWN tags, stick the tag name in the * paramater list as a boolean. * This is in case a later module wants to try and interpret it. */ if (tag->type == P_UNKNOWN) { tptr = start; } /* * Allocate a buffer for the parameter list and * put it in the tag structure. */ blen = (len - (int)(tptr - buf)); buff = PA_ALLOC((blen+1) * sizeof (char)); /* LAM no need to use handles here */ /* BAD_OOM_HANDLING should return NULL tag*/ if (buff != NULL) { PA_LOCK(locked_buff, char *, buff); XP_BCOPY(tptr, locked_buff, blen); locked_buff[blen] = '\0'; PA_UNLOCK(buff); } else { blen = 0; } tag->data = buff; tag->data_len = blen; tag->true_len = len; tag->next = NULL; tag->edit_element = NULL; return(tag); } /************************************* * Function: pa_CreateTextTag * * Description: This function allocates and fills in an entire * PA_Tag structure for a P_TEXT tag element. * P_TEXT is a special tag, where the text passed * is simply shoved into the first value field * of the values array. * * Params: Takes a buffer containing a text string, * and a length for that buffer. The buffer is NOT a \0 * terminated string. * * Returns: A pointer to a completely filled in PA_Tag structure * of type P_TEXT containing the text passed in. * On failure it returns NULL. *************************************/ PA_Tag * pa_CreateTextTag(pa_DocData *doc_data, char *buf, int32 len) { PA_Tag *tag; PA_Block buff; char *locked_buff; /* * Allocate a new tag structure, return NULL * if you can't. */ tag = XP_NEW(PA_Tag); if (tag == NULL) { return(NULL); } tag->lo_data = NULL; tag->type = P_TEXT; tag->is_end = FALSE; tag->newline_count = doc_data->newline_count; buff = PA_ALLOC((len + 1) * sizeof(char)); if (buff != NULL) { PA_LOCK(locked_buff, char *, buff); XP_BCOPY(buf, locked_buff, len); locked_buff[len] = '\0'; PA_UNLOCK(buff); } else { XP_DELETE(tag); return(NULL); } tag->data = buff; tag->data_len = len; tag->true_len = len; tag->next = NULL; tag->edit_element = NULL; return(tag); } static PRBool pa_eval_javascript_expression(pa_DocData *doc_data, char *expression, PRBool *return_value) { char *eval_str; /* If JS is not enabled, assume expression evaluates to true */ if (LM_GetMochaEnabled() == FALSE) { *return_value = PR_TRUE; return PR_TRUE; } if (!LM_AttemptLockJS(doc_data->window_id, NULL, NULL)) { doc_data->waiting_for_js_thread = PR_TRUE; return PR_FALSE; } doc_data->waiting_for_js_thread = PR_FALSE; eval_str = LM_EvaluateAttribute(doc_data->window_id, expression, doc_data->newline_count + 1); *return_value = eval_str && !XP_STRCMP(eval_str, "true"); if (eval_str) XP_FREE(eval_str); LM_UnlockJS(doc_data->window_id); return PR_TRUE; } static PRBool pa_could_be_javascript_entity(char *entity, int len) { if (len == 0) return PR_TRUE; if (len == 1) return (entity[0] == '&'); return (entity[1] == '{'); } static PRBool pa_is_javascript_entity(char *entity, int len) { return ((len >=2) && pa_could_be_javascript_entity(entity, len)); } static char * pa_isolate_javascript_expression(char *entity, int len, char **terminatorp) { char *tptr; /* Skip over &{ */ tptr = entity + 2; len -= 2; while (len >= 2) { if ((*tptr == '}') && (*(tptr + 1) == ';')) { *tptr = '\0'; *terminatorp = tptr; return entity + 2; } tptr++; len--; } return NULL; } /* This function is used only to evaluate JavaScript entities used to form conditional comments. Other JS entities are handled within layout. Returns PR_TRUE if the JS entity could be evaluated, or PR_FALSE if it could not be because the JS thread was busy. In the latter case, we'll have to try again later. */ static PRBool pa_try_eval_javascript_entity(pa_DocData *doc_data, char *entity, int len, PRBool *retval) { char *expr, *terminator_char; PRBool success; if (!pa_is_javascript_entity(entity, len)) return PR_FALSE; expr = pa_isolate_javascript_expression(entity, len, &terminator_char); if (!expr) return PR_FALSE; success = pa_eval_javascript_expression(doc_data, expr, retval); /* Eliminate null-termination performed by pa_eval_javascript_expression()*/ if (!success) *terminator_char = '}'; return success; } /************************************* * Function: pa_FindMDLTag * * Description: This function finds the start of any MDL tags * in the passed buffer. It also finds MDL comments * and flags partial MDL tags and partial comments. * * Params: Takes a buffer and a length for that buffer. The buffer is NOT * a \0 terminated string. It also takes a pointer to an * int in which to store special return codes. * * Returns: A character pointer. This is NULL if the entire string has * no MDL tags. It is a pointer to the beginning of any such * tags or possible partial tags if any are found. *************************************/ char * pa_FindMDLTag(pa_DocData *doc_data, char *buf, int32 len, intn *is_comment) { char *tptr; *is_comment = COMMENT_NO; /* * A NULL buffer obviously has no MDL tags. */ if (buf == NULL) { return(NULL); } for (tptr = buf; --len >= 0; tptr++) { if (*tptr == '\n' || (*tptr == '\r' && len && *(tptr+1) != '\n') ) { if (doc_data->no_newline_count == 0) doc_data->newline_count++; continue; } /* * A '<' might be the start of a MDL tag or comment. */ if (*tptr == '<') { /* * If this is the last character in the string * we don't know if it is an anchor yet or not. * we want to save it until the next buffer to make * sure. */ if (len == 0) { *is_comment = COMMENT_MAYBE; return(tptr); } /* * else if the next character is a letter or * a '/' , this should be some kind of tag. */ else if ((XP_IS_ALPHA(*(tptr + 1)))|| (*(tptr + 1) == '/')) { return(tptr); } /* * else is the next character is an exclamation point, * this might be a comment. */ else if (*(tptr + 1) == '!') { char *ptr; ptr = (char *)(tptr + 1); /* * If there are 2 more chars in this buffer * we can know for sure if this is a comment, * otherwise we have to wait for the next * buffer. */ if (len > 2) { if ((*(ptr + 1) == '-')&& (*(ptr + 2) == '-')) { /* Check for a javascript entity immediately after the opening of the comment. This indicates the presence of a conditional comment. */ if (pa_could_be_javascript_entity(ptr + 3, len - 3) && (doc_data->brute_tag == P_UNKNOWN)) { PRBool js_result; if (pa_try_eval_javascript_entity(doc_data, ptr + 3, len - 3, &js_result)) { if (js_result) *is_comment = COMMENT_UNCOMMENT; else *is_comment = COMMENT_YES; } else { /* Unable to evaluate. Try again later */ *is_comment = COMMENT_MAYBE; } } else { *is_comment = COMMENT_YES; } return(tptr); } /* * Else we may have an HTML++ tag * which we will become an UNKNOWN * tag type. */ /* * So many people do broken stuff, anything * That starts ', so it is REALLY * easy to find their end. */ for (tptr = buf; --len >= 0; tptr++) { if (*tptr == '\n' || (*tptr == '\r' && len && *(tptr+1) != '\n') ) { if (doc_data->no_newline_count == 0) doc_data->newline_count++; continue; } if (*tptr == '>') { return(tptr); } } #else /* * MDL tags are always ended with a '>', but '>' can also * appear in quoted attribute values, so be careful. */ in_quote = 0; newlines = 0; for (tptr = buf; --len >= 0; tptr++) { if (*tptr == '\n' || (*tptr == '\r' && len && *(tptr+1) != '\n') ) { newlines++; continue; } if (*tptr == '\"') { /* * If we are not in a double quote already and this * double quote is immediately after some whitespace * or an equal sign, it is the start of a quoted * attribute value, and greater than signs inside * do not close this tag. */ if (in_quote == 0) { if ((tptr > buf)&&((*(tptr - 1) == '=')|| (XP_IS_SPACE(*(tptr - 1))))) { in_quote = 2; } } /* * else if we are already in a double quote, * this double quote closes it. */ else if (in_quote == 2) { in_quote = 0; } } /* * Else the same as above except for single quoted values */ else if (*tptr == '\'') { /* * If we are not in a single quote already and this * single quote is immediately after some whitespace * or an equal sign, it is the start of a quoted * attribute value, and greater than signs inside * do not close this tag. */ if (in_quote == 0) { if ((tptr > buf)&&((*(tptr - 1) == '=')|| (XP_IS_SPACE(*(tptr - 1))))) { in_quote = 1; } } /* * else if we are already in a single quote, * this single quote closes it. */ else if (in_quote == 1) { in_quote = 0; } } if (*tptr == '`') { /* * If we are not in a double quote already and this * double quote is immediately after some whitespace * or an equal sign, it is the start of a quoted * attribute value, and greater than signs inside * do not close this tag. */ if (in_quote == 0) { if ((tptr > buf)&&((*(tptr - 1) == '=')|| (XP_IS_SPACE(*(tptr - 1))))) { in_quote = 3; } } /* * else if we are already in a double quote, * this double quote closes it. */ else if (in_quote == 3) { in_quote = 0; } } else if ((*tptr == '>')&&(in_quote == 0)) { if (doc_data->no_newline_count == 0) doc_data->newline_count += newlines; return(tptr); } } #endif /* LENIENT_END_TAG */ return(NULL); } /************************************* * Function: pa_FindMDLEndComment * * Description: This function finds the end of a MDL comment in the * passed buffer. * * Params: Takes a buffer and a length for that buffer. The buffer is NOT * a \0 terminated string. * * Returns: A character pointer. This is NULL if the string has * no end to the MDL comment. It is a pointer to the end of * the comment if any is found. *************************************/ char * pa_FindMDLEndComment(pa_DocData *doc_data, char *buf, int32 len) { char *tptr; int newline_count = 0; /* * There can be no end to a MDL comment in a NULL buffer. */ if (buf == NULL) { return(NULL); } /* * Finding the end to a comment is kind of complex since * the comment end sequence is actually 3 characters "-->", * and there can be other '>' chararacters inside the comment. */ for (tptr = buf; --len >= 0; tptr++) { if (*tptr == '\n' || (*tptr == '\r' && len && *(tptr+1) != '\n') ) { newline_count++; continue; } if ((*tptr == '>')&&(tptr - buf) >= 2) { if ((*(tptr - 1) == '-')&&(*(tptr - 2) == '-')) { if (doc_data->no_newline_count == 0) doc_data->newline_count += newline_count; return(tptr); } } } return(NULL); } char * pa_FindMDLEndProcessInstruction(pa_DocData *doc_data, char *buf, int32 len) { char *tptr; int newline_count = 0; /* * There can be no end to a processing instruction in a NULL buffer. */ if (buf == NULL) { return(NULL); } /* * Finding the end to a processing instruction is kind of complex * since the end sequence is actually 2 characters "?>", * and there can be other '>' chararacters inside the * processing instruction. */ for (tptr = buf; --len >= 0; tptr++) { if (*tptr == '\n' || (*tptr == '\r' && len && *(tptr+1) != '\n') ) { newline_count++; continue; } if ((*tptr == '>')&&(tptr - buf) >= 1) { if (*(tptr - 1) == '?') { if (doc_data->no_newline_count == 0) doc_data->newline_count += newline_count; return(tptr); } } } return(NULL); } /* * A simple test to see if this tag might have attributes. * Look and see if there are any non-whitespace characters between * the end of the tag and the closing '>' character. */ Bool PA_TagHasParams(PA_Tag *tag) { int32 cnt; int32 len; char *buf; char *tptr; /* * Punt on obvious error */ if ((tag == NULL)||(tag->data == NULL)) { return(FALSE); } PA_LOCK(buf, char *, tag->data); len = tag->data_len; /* * To simplify enormously, we require that buf[len - 1] is * the tag element terminating character '>' * * If not, punt here. */ if (buf[len - 1] != '>') { PA_UNLOCK(tag->data); return(FALSE); } /* * Skip all whitespace starting at the front of the string. */ cnt = 0; tptr = buf; while ((XP_IS_SPACE(*tptr))&&(cnt < len)) { cnt++; tptr++; } PA_UNLOCK(tag->data); /* * If there is something we didn't skip it might be an attribute. */ if (cnt < (len - 1)) { return(TRUE); } return(FALSE); } void PA_FetchRequestedNameValues(PA_Tag *tag, char *namesToFind[], int32 numNamesToFind, char *values[], uint16 win_csid) { int32 cnt; char *buf; char *param_ptr; char tchar; int32 len; int32 nameNum; Bool nameFound; #ifndef LENIENT_END_TAG char *buf_end; #endif /* LENIENT_END_TAG */ nameFound = FALSE; /* * Punt on obvious error */ if ((tag == NULL)||(tag->data == NULL)) return; PA_LOCK(buf, char *, tag->data); len = tag->data_len; /* * To simplify enormously, we require that buf[len - 1] is * the tag element terminating character '>' * * If not, punt here. */ if (buf[len - 1] != '>') { PA_UNLOCK(tag->data); return; } #ifndef LENIENT_END_TAG buf_end = (char *)(buf + len - 1); #endif /* LENIENT_END_TAG */ while (*buf != '>') { char *tptr; int32 plen; int32 vlen; /* * Skip whitespace before the next possible * parameter name. If no more parameters, break * out of the while loop. */ /* get char so we don't do so many loads from memory */ tchar = *buf; while ((XP_IS_SPACE(tchar))&&(tchar != '>')) { buf++; tchar = *buf; } if (*buf == '>') { break; } /* * Find the end of the parameter name. */ tptr = buf; cnt = 0; /* get char so we don't do so many loads from memory */ tchar = *tptr; while ( (!XP_IS_SPACE(tchar)) && (tchar != '=') && (tchar != '>') ) { tptr++; tchar = *tptr; } cnt = tptr - buf; /* * param_ptr points to the start of the name. * plen is its length. */ param_ptr = buf; plen = cnt; /* * Move forward to the '=' which delimits the value */ buf = tptr; while (XP_IS_SPACE(*buf)) { buf++; } /* * clip out the paramater name */ tptr = (char *)(param_ptr + plen); tchar = *tptr; *tptr = '\0'; /* * Look for the name in the list of requested names * */ nameNum = 0; nameFound = FALSE; while( nameNum < numNamesToFind ) { if (pa_TagEqual(namesToFind[nameNum], param_ptr)) { nameFound = TRUE; break; } nameNum++; } /* * Restore character after parameter name */ *tptr = tchar; /* * We have a value associated with this name. */ if (*buf == '=') { uint8 quoted; /* 0=none, 1=single, 2=double */ char *nptr; char *vend_ptr; char *tmp_value; int32 nlen; /* * Skip past the '='. */ buf++; /* * skip any white space between '=' and * the value. */ while (XP_IS_SPACE(*buf)) { buf++; } /* * Check if this is going to be a quoted * value string. */ quoted = 0; tptr = buf; cnt = 0; if (*buf == '\'') { /* * Skip the quote. */ buf++; tptr = buf; quoted = 1; } if (*buf == '\"') { /* * Skip the quote. */ buf++; tptr = buf; quoted = 2; } if (*buf == '`') { /* * DON'T skip the quote. */ tptr = buf+1; quoted = 3; } /* * extract the end and length of the value string. */ if (quoted == 0) { /* get char so we don't do so many loads from memory */ tchar = *tptr; while ((!XP_IS_SPACE(tchar))&&(tchar != '>')) { tptr++; tchar = *tptr; cnt++; } } else if (quoted == 1) { #ifdef LENIENT_END_TAG /* get char so we don't do so many loads from memory */ tchar = *tptr; while ((tchar != '\'')&&(tchar != '>')) { tptr++; tchar = *tptr; cnt++; } #else /* * Allow '>' inside the quoted value. */ while ((*tptr != '\'')&&(tptr != buf_end)) { tptr++; cnt++; } #endif /* LENIENT_END_TAG */ } else if (quoted == 2) { #ifdef LENIENT_END_TAG /* get char so we don't do so many loads from memory */ tchar = *tptr; while ((tchar != '\"')&&(tchar != '>')) { tptr++; tchar = *tptr; cnt++; } #else /* * Allow '>' inside the quoted value. */ while ((*tptr != '\"')&&(tptr != buf_end)) { tptr++; cnt++; } #endif /* LENIENT_END_TAG */ } else if (quoted == 3) { /* * Allow '>' inside the quoted value. */ while ((*tptr != '`')&&(tptr != buf_end)) { tptr++; cnt++; } /* include the end of the back quote when retrieving values. */ if( *tptr == '`' ) { tptr++; cnt++; } } if( nameFound == TRUE ) { /* * buf is the beginning of the parameter value. * vlen is its length. tptr is the character * right after the end of the original end which * may have been changed by the amperstand * escapes. */ vlen = cnt; /* * Find the end of the value and terminate * the string. */ vend_ptr = (char *)(buf + vlen); tchar = *vend_ptr; *vend_ptr = '\0'; tmp_value = XP_STRDUP(buf); /* * Amperstand escapes are allowed in * parameter values, expand them now. * The last parameter should force no * partial amperstand escapes here. */ nptr = pa_ExpandEscapes(tmp_value, vlen, &nlen, TRUE, win_csid); tmp_value[nlen] = '\0'; /* * Stuff the value into the list, and restore * the character afer the value string. */ values[nameNum] = tmp_value; *vend_ptr = tchar; } buf = tptr; if ((quoted == 1)&&(*buf == '\'')) { buf++; } else if ((quoted == 2)&&(*buf == '\"')) { buf++; } /* * remove white space trailing the value. */ while (XP_IS_SPACE(*buf)) { buf++; } } /* * Else a name with no value, just a boolean tag. * No need to do anything */ else { } } PA_UNLOCK(tag->data); } /************************************* * Function: PA_FetchParamValue * * Description: This messy function should take the parameter string * that was part of the tag element, and turn * look trhough it for a name that matches the * parameter name passed in, and return its value. * It is complicated by * the fact that a value can be a single unquoted word, * or a quoted string. Also by the fact that some names * may have no matching values, and by the fact that there * can be arbitrary whitespace around the equal sign. * Unmatching quotes in quoted values are assumed to * close at the end of the tag element. * * Params: Takes a tag element structure containing the parameter string * and the parameter name to look for. * * Returns: A pointer to an allocated buffer containing a copy * of the value string. Boolean parameters return a value * of '\0'. *************************************/ PA_Block PA_FetchParamValue(PA_Tag *tag, char *param_name, uint16 win_csid) { int32 cnt; char *buf; #ifndef LENIENT_END_TAG char *buf_end; #endif /* LENIENT_END_TAG */ char *param_ptr; char tchar; int32 len; PA_Block buff; char *locked_buff; /* * Punt on obvious error */ if ((tag == NULL)||(tag->data == NULL)) { return(NULL); } PA_LOCK(buf, char *, tag->data); len = tag->data_len; /* * To simplify enormously, we require that buf[len - 1] is * the tag element terminating character '>' * * If not, punt here. */ if (buf[len - 1] != '>') { PA_UNLOCK(tag->data); return(NULL); } #ifndef LENIENT_END_TAG buf_end = (char *)(buf + len - 1); #endif /* LENIENT_END_TAG */ while (*buf != '>') { char *tptr; int32 plen; int32 vlen; /* * Skip whitespace before the next possible * parameter name. If no more parameters, break * out of the while loop. */ while ((XP_IS_SPACE(*buf))&&(*buf != '>')) { buf++; } if (*buf == '>') { break; } /* * Find the end of the parameter name. */ tptr = buf; cnt = 0; while ((!XP_IS_SPACE(*tptr))&&(*tptr != '=')&&(*tptr != '>')) { tptr++; cnt++; } /* * param_ptr points to the start of the name. * plen is its length. */ param_ptr = buf; plen = cnt; /* * Move forward to the '=' which delimits the value */ buf = tptr; while (XP_IS_SPACE(*buf)) { buf++; } /* * We have a value associated with this name. */ if (*buf == '=') { uint8 quoted; /* 0=none, 1=single, 2=double */ char *pptr; /* * Skip past the '='. */ buf++; /* * skip any white space between '=' and * the value. */ while (XP_IS_SPACE(*buf)) { buf++; } /* * Check if this is going to be a quoted * value string. */ quoted = 0; tptr = buf; cnt = 0; if (*buf == '\"') { /* * Skip the quote. */ buf++; tptr = buf; quoted = 2; } else if (*buf == '\'') { /* * Skip the quote. */ buf++; tptr = buf; quoted = 1; } else if (*buf == '`') { /* we want to include the ` as part of the string we return */ tptr = buf+1; cnt = 1; quoted = 3; } /* * extract the end and length of the value string. */ if (quoted == 0) { while ((!XP_IS_SPACE(*tptr))&&(*tptr != '>')) { tptr++; cnt++; } } else if (quoted == 1) { #ifdef LENIENT_END_TAG while ((*tptr != '\'')&&(*tptr != '>')) { tptr++; cnt++; } #else /* * Allow '>' inside the quoted value. */ while ((*tptr != '\'')&&(tptr != buf_end)) { tptr++; cnt++; } #endif /* LENIENT_END_TAG */ } else if (quoted == 2) { #ifdef LENIENT_END_TAG while ((*tptr != '\"')&&(*tptr != '>')) { tptr++; cnt++; } #else /* * Allow '>' inside the quoted value. */ while ((*tptr != '\"')&&(tptr != buf_end)) { tptr++; cnt++; } #endif /* LENIENT_END_TAG */ } else if (quoted == 3) { /* * Allow '>' inside the quoted value. */ while ((*tptr != '`')&&(tptr != buf_end)) { tptr++; cnt++; } if( *tptr == '`' ) { tptr++; cnt++; } } /* * buf is the beginning of the parameter value. * vlen is its length. tptr is the character * right after the end of the original end which * may have been changed by the amperstand * escapes. */ vlen = cnt; /* * clip out the paramater name */ pptr = (char *)(param_ptr + plen); tchar = *pptr; *pptr = '\0'; /* * If this parameter name matches, this is * the right value, make a copy to return. */ if (pa_TagEqual(param_name, param_ptr)) { char *vend_ptr; /* * Restore character after parameter name */ *pptr = tchar; /* * Find the end of the value and terminate * the string. */ vend_ptr = (char *)(buf + vlen); tchar = *vend_ptr; *vend_ptr = '\0'; buff = PA_ALLOC((vlen + 1) * sizeof(char)); if (buff != NULL) { char *nptr; int32 nlen; PA_LOCK(locked_buff, char *, buff); XP_STRCPY(locked_buff, buf); /* * Amperstand escapes are allowed in * parameter values, expand them now. * The last parameter should force no * partial amperstand escapes here. */ nptr = pa_ExpandEscapes(locked_buff, vlen, &nlen, TRUE, win_csid); locked_buff[nlen] = '\0'; PA_UNLOCK(buff); } *vend_ptr = tchar; PA_UNLOCK(tag->data); return(buff); } *pptr = tchar; buf = tptr; if ((quoted == 1)&&(*buf == '\'')) { buf++; } else if ((quoted == 2)&&(*buf == '\"')) { buf++; } else if ((quoted == 3)&&(*buf == '`')) { buf++; } /* * remove white space trailing the value. */ while (XP_IS_SPACE(*buf)) { buf++; } } /* * Else a name with no value, just a boolean tag. * For boolean tag set value to '\0' (""). */ else { /* * clip out the paramater name */ tptr = (char *)(param_ptr + plen); tchar = *tptr; *tptr = '\0'; /* * If this parameter name matches, this is * a boolean, and return '\0' as its value. */ if (pa_TagEqual(param_name, param_ptr)) { *tptr = tchar; buff = PA_ALLOC(1 * sizeof(char)); if (buff == NULL) { PA_UNLOCK(tag->data); return(NULL); } PA_LOCK(locked_buff, char *, buff); locked_buff[0] = '\0'; PA_UNLOCK(buff); PA_UNLOCK(tag->data); return(buff); } *tptr = tchar; } } PA_UNLOCK(tag->data); return(NULL); } int32 PA_FetchAllNameValues(PA_Tag *tag, char ***names, char ***values, uint16 win_csid) { int32 cnt; char *buf; char *param_ptr; char tchar; int32 len; char **name_list; char **value_list; int32 name_size; int32 name_cnt; #ifndef LENIENT_END_TAG char *buf_end; #endif /* LENIENT_END_TAG */ *names = NULL; *values = NULL; /* * Punt on obvious error */ if ((tag == NULL)||(tag->data == NULL)) { return(0); } PA_LOCK(buf, char *, tag->data); len = tag->data_len; /* * To simplify enormously, we require that buf[len - 1] is * the tag element terminating character '>' * * If not, punt here. */ if (buf[len - 1] != '>') { PA_UNLOCK(tag->data); return(0); } name_list = (char **)XP_ALLOC(NAME_LIST_INC * sizeof(char *)); if (name_list == NULL) { PA_UNLOCK(tag->data); return(0); } name_size = NAME_LIST_INC; name_cnt = 0; value_list = (char **)XP_ALLOC(NAME_LIST_INC * sizeof(char *)); if (value_list == NULL) { XP_FREE(name_list); PA_UNLOCK(tag->data); return(0); } #ifndef LENIENT_END_TAG buf_end = (char *)(buf + len - 1); #endif /* LENIENT_END_TAG */ while (*buf != '>') { char *tptr; int32 plen; int32 vlen; /* * Skip whitespace before the next possible * parameter name. If no more parameters, break * out of the while loop. */ while ((XP_IS_SPACE(*buf))&&(*buf != '>')) { buf++; } if (*buf == '>') { break; } /* * Find the end of the parameter name. */ tptr = buf; cnt = 0; while ((!XP_IS_SPACE(*tptr))&&(*tptr != '=')&&(*tptr != '>')) { tptr++; cnt++; } /* * param_ptr points to the start of the name. * plen is its length. */ param_ptr = buf; plen = cnt; /* * Move forward to the '=' which delimits the value */ buf = tptr; while (XP_IS_SPACE(*buf)) { buf++; } /* * clip out the paramater name */ tptr = (char *)(param_ptr + plen); tchar = *tptr; *tptr = '\0'; /* * Stuff the name into the name list, growing * the name list if needed. */ name_list[name_cnt] = XP_STRDUP(param_ptr); name_cnt++; if (name_cnt >= name_size) { name_list = (char **)XP_REALLOC(name_list, (name_size + NAME_LIST_INC) * sizeof(char *)); if (name_list == NULL) { PA_UNLOCK(tag->data); return(0); } value_list = (char **)XP_REALLOC(value_list, (name_size + NAME_LIST_INC) * sizeof(char *)); if (value_list == NULL) { PA_UNLOCK(tag->data); return(0); } name_size += NAME_LIST_INC; } /* * Restore character after parameter name */ *tptr = tchar; /* * We have a value associated with this name. */ if (*buf == '=') { uint8 quoted; /* 0=none, 1=single, 2=double */ char *nptr; char *vend_ptr; char *tmp_value; int32 nlen; /* * Skip past the '='. */ buf++; /* * skip any white space between '=' and * the value. */ while (XP_IS_SPACE(*buf)) { buf++; } /* * Check if this is going to be a quoted * value string. */ quoted = 0; tptr = buf; cnt = 0; if (*buf == '\'') { /* * Skip the quote. */ buf++; tptr = buf; quoted = 1; } if (*buf == '\"') { /* * Skip the quote. */ buf++; tptr = buf; quoted = 2; } if (*buf == '`') { /* * DON'T skip the quote. */ tptr = buf+1; quoted = 3; } /* * extract the end and length of the value string. */ if (quoted == 0) { while ((!XP_IS_SPACE(*tptr))&&(*tptr != '>')) { tptr++; cnt++; } } else if (quoted == 1) { #ifdef LENIENT_END_TAG while ((*tptr != '\'')&&(*tptr != '>')) { tptr++; cnt++; } #else /* * Allow '>' inside the quoted value. */ while ((*tptr != '\'')&&(tptr != buf_end)) { tptr++; cnt++; } #endif /* LENIENT_END_TAG */ } else if (quoted == 2) { #ifdef LENIENT_END_TAG while ((*tptr != '\"')&&(*tptr != '>')) { tptr++; cnt++; } #else /* * Allow '>' inside the quoted value. */ while ((*tptr != '\"')&&(tptr != buf_end)) { tptr++; cnt++; } #endif /* LENIENT_END_TAG */ } else if (quoted == 3) { /* * Allow '>' inside the quoted value. */ while ((*tptr != '`')&&(tptr != buf_end)) { tptr++; cnt++; } /* include the end of the back quote when retrieving values. */ if( *tptr == '`' ) { tptr++; cnt++; } } /* * buf is the beginning of the parameter value. * vlen is its length. tptr is the character * right after the end of the original end which * may have been changed by the amperstand * escapes. */ vlen = cnt; /* * Find the end of the value and terminate * the string. */ vend_ptr = (char *)(buf + vlen); tchar = *vend_ptr; *vend_ptr = '\0'; tmp_value = XP_STRDUP(buf); /* * Amperstand escapes are allowed in * parameter values, expand them now. * The last parameter should force no * partial amperstand escapes here. */ nptr = pa_ExpandEscapes(tmp_value, vlen, &nlen, TRUE, win_csid); tmp_value[nlen] = '\0'; /* * Stuff the value into the list, and restore * the character afer the value string. */ value_list[name_cnt - 1] = tmp_value; *vend_ptr = tchar; buf = tptr; if ((quoted == 1)&&(*buf == '\'')) { buf++; } else if ((quoted == 2)&&(*buf == '\"')) { buf++; } /* * remove white space trailing the value. */ while (XP_IS_SPACE(*buf)) { buf++; } } /* * Else a name with no value, just a boolean tag. * For boolean tag set value to NULL. */ else { value_list[name_cnt - 1] = NULL;; } } PA_UNLOCK(tag->data); *names = name_list; *values = value_list; return(name_cnt); } /************************************* * Function: PA_HasMocha * * Description: This messy function should take the parameter string * that was part of the tag element, and turn * look trhough it for any mocha attributes * It is complicated by * the fact that a value can be a single unquoted word, * or a quoted string. Also by the fact that some names * may have no matching values, and by the fact that there * can be arbitrary whitespace around the equal sign. * Unmatching quotes in quoted values are assumed to * close at the end of the tag element. * * Params: Takes a tag element structure containing the parameter string * * Returns: TRUE if any mocha attributes were found else FALSE *************************************/ Bool PA_HasMocha(PA_Tag *tag) { int32 cnt; char *buf; #ifndef LENIENT_END_TAG char *buf_end; #endif /* LENIENT_END_TAG */ char *param_ptr; char tchar; int32 len; PA_Block buff; char *locked_buff; /* * Punt on obvious error */ if ((tag == NULL)||(tag->data == NULL)) { return(FALSE); } PA_LOCK(buf, char *, tag->data); len = tag->data_len; /* * To simplify enormously, we require that buf[len - 1] is * the tag element terminating character '>' * * If not, punt here. */ if (buf[len - 1] != '>') { PA_UNLOCK(tag->data); return(FALSE); } #ifndef LENIENT_END_TAG buf_end = (char *)(buf + len - 1); #endif /* LENIENT_END_TAG */ while (*buf != '>') { char *tptr; int32 plen; int32 vlen; /* * Skip whitespace before the next possible * parameter name. If no more parameters, break * out of the while loop. */ while ((XP_IS_SPACE(*buf))&&(*buf != '>')) { buf++; } if (*buf == '>') { break; } /* * Find the end of the parameter name. */ tptr = buf; cnt = 0; while ((!XP_IS_SPACE(*tptr))&&(*tptr != '=')&&(*tptr != '>')) { tptr++; cnt++; } /* * param_ptr points to the start of the name. * plen is its length. */ param_ptr = buf; plen = cnt; /* * Move forward to the '=' which delimits the value */ buf = tptr; while (XP_IS_SPACE(*buf)) { buf++; } /* * We have a value associated with this name. */ if (*buf == '=') { uint8 quoted; /* 0=none, 1=single, 2=double */ char *pptr; /* * Skip past the '='. */ buf++; /* * skip any white space between '=' and * the value. */ while (XP_IS_SPACE(*buf)) { buf++; } /* * Check if this is going to be a quoted * value string. */ quoted = 0; tptr = buf; cnt = 0; if (*buf == '\"') { /* * Skip the quote. */ buf++; tptr = buf; quoted = 2; } else if (*buf == '\'') { /* * Skip the quote. */ buf++; tptr = buf; quoted = 1; } else if (*buf == '`') { /* we want to include the ` as part of the string we return */ tptr = buf+1; cnt = 1; quoted = 3; } /* * extract the end and length of the value string. */ if (quoted == 0) { while ((!XP_IS_SPACE(*tptr))&&(*tptr != '>')) { tptr++; cnt++; } } else if (quoted == 1) { #ifdef LENIENT_END_TAG while ((*tptr != '\'')&&(*tptr != '>')) { tptr++; cnt++; } #else /* * Allow '>' inside the quoted value. */ while ((*tptr != '\'')&&(tptr != buf_end)) { tptr++; cnt++; } #endif /* LENIENT_END_TAG */ } else if (quoted == 2) { #ifdef LENIENT_END_TAG while ((*tptr != '\"')&&(*tptr != '>')) { tptr++; cnt++; } #else /* * Allow '>' inside the quoted value. */ while ((*tptr != '\"')&&(tptr != buf_end)) { tptr++; cnt++; } #endif /* LENIENT_END_TAG */ } else if (quoted == 3) { /* * Allow '>' inside the quoted value. */ while ((*tptr != '`')&&(tptr != buf_end)) { tptr++; cnt++; } if( *tptr == '`' ) { tptr++; cnt++; } } /* * buf is the beginning of the parameter value. * vlen is its length. tptr is the character * right after the end of the original end which * may have been changed by the amperstand * escapes. */ vlen = cnt; /* * clip out the paramater name */ pptr = (char *)(param_ptr + plen); tchar = *pptr; *pptr = '\0'; /* * See if this parameter name is a Mocha attribute name */ if (pa_TagEqual(PARAM_NAME, param_ptr) || pa_TagEqual(PARAM_ONFOCUS, param_ptr) || pa_TagEqual(PARAM_ONBLUR, param_ptr) || pa_TagEqual(PARAM_ONCHANGE, param_ptr) || pa_TagEqual(PARAM_ONSELECT, param_ptr) || pa_TagEqual(PARAM_ONCLICK, param_ptr) || pa_TagEqual(PARAM_ONSCROLL, param_ptr) || pa_TagEqual(PARAM_ONSUBMIT, param_ptr) || pa_TagEqual(PARAM_ONMOUSEOVER, param_ptr) || pa_TagEqual(PARAM_ONMOUSEOUT, param_ptr) || pa_TagEqual(PARAM_ONRESET, param_ptr) || pa_TagEqual(PARAM_ONUNLOAD, param_ptr) || pa_TagEqual(PARAM_ONLOAD, param_ptr) || pa_TagEqual(PARAM_ONERROR, param_ptr) || pa_TagEqual(PARAM_ONABORT, param_ptr) || pa_TagEqual(PARAM_ONHELP, param_ptr) || pa_TagEqual(PARAM_ONMOUSEDOWN, param_ptr) || pa_TagEqual(PARAM_ONMOUSEUP, param_ptr) || pa_TagEqual(PARAM_ONDBLCLICK, param_ptr) || pa_TagEqual(PARAM_ONKEYDOWN, param_ptr) || pa_TagEqual(PARAM_ONKEYUP, param_ptr) || pa_TagEqual(PARAM_ONKEYPRESS, param_ptr) || pa_TagEqual(PARAM_ONDRAGDROP, param_ptr) || pa_TagEqual(PARAM_ONMOVE, param_ptr) || pa_TagEqual(PARAM_ONRESIZE, param_ptr)) { char *vend_ptr; /* * Restore character after parameter name */ *pptr = tchar; PA_UNLOCK(tag->data); return(TRUE); } /* * Wasn't a meaningful attribute, restore character after * parameter name */ *pptr = tchar; buf = tptr; if ((quoted == 1)&&(*buf == '\'')) { buf++; } else if ((quoted == 2)&&(*buf == '\"')) { buf++; } else if ((quoted == 3)&&(*buf == '`')) { buf++; } /* * remove white space trailing the value. */ while (XP_IS_SPACE(*buf)) { buf++; } } /* * Else a name with no value, just a boolean tag. * For boolean tag set value to '\0' (""). */ else { /* * clip out the paramater name */ tptr = (char *)(param_ptr + plen); tchar = *tptr; *tptr = '\0'; /* * Are there any other no-value mocha parameters? */ if (pa_TagEqual(PARAM_MAYSCRIPT, param_ptr)) { /* * Restore the trailing character */ *tptr = tchar; PA_UNLOCK(tag->data); return(TRUE); } /* * Wasn't useful, restore the trailing character */ *tptr = tchar; } } PA_UNLOCK(tag->data); return(FALSE); } #ifdef PROFILE #pragma profile off #endif