X-Git-Url: https://git.stg.codes/stg.git/blobdiff_plain/8c6fa3fbaccc22127280bf77a48fab5a3ee0716e..46b0747592074017ff0ea4b33d4a7194235886e5:/libs/dotconfpp/dotconfpp.cpp

diff --git a/libs/dotconfpp/dotconfpp.cpp b/libs/dotconfpp/dotconfpp.cpp
new file mode 100644
index 00000000..8f766f01
--- /dev/null
+++ b/libs/dotconfpp/dotconfpp.cpp
@@ -0,0 +1,664 @@
+/*  Copyright (C) 2003 Aleksey Krivoshey <krivoshey@users.sourceforge.net>
+*
+*   This program is free software; you can redistribute it and/or modify
+*   it under the terms of the GNU General Public License as published by
+*   the Free Software Foundation; either version 2 of the License, or
+*   (at your option) any later version.
+*
+*   This program is distributed in the hope that it will be useful,
+*   but WITHOUT ANY WARRANTY; without even the implied warranty of
+*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*   GNU General Public License for more details.
+*
+*   You should have received a copy of the GNU General Public License
+*   along with this program; if not, write to the Free Software
+*   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+#include <libgen.h> // dirname
+#include <glob.h> // glob
+#include <string>
+
+#include "stg/dotconfpp.h"
+#include "mempool.h"
+
+DOTCONFDocumentNode::DOTCONFDocumentNode():previousNode(NULL), nextNode(NULL), parentNode(NULL), childNode(NULL),
+    values(NULL), valuesCount(0), 
+    name(NULL), lineNum(0), fileName(NULL), closed(true)
+{
+}
+
+DOTCONFDocumentNode::~DOTCONFDocumentNode()
+{
+    free(name);
+    if(values != NULL){
+        for(int i = 0 ; i < valuesCount; i++){
+            free(values[i]);
+        }
+        free(values);
+    }
+}
+
+void DOTCONFDocumentNode::pushValue(char * _value)
+{
+    valuesCount++;
+    values = (char**)realloc(values, valuesCount*sizeof(char*));
+    values[valuesCount-1] = strdup(_value);
+}
+
+const char* DOTCONFDocumentNode::getValue(int index) const
+{
+    if(index >= valuesCount){
+        return NULL;
+    }
+    return values[index];
+}
+
+DOTCONFDocument::DOTCONFDocument(DOTCONFDocument::CaseSensitive caseSensitivity):
+    mempool(NULL),
+    curParent(NULL), curPrev(NULL), errorCallback(NULL), errorCallbackData(NULL),
+    curLine(0), file(NULL), fileName(NULL)
+{
+    if(caseSensitivity == CASESENSITIVE){
+        cmp_func = strcmp;
+    } else {
+        cmp_func = strcasecmp;
+    }
+
+    mempool = new AsyncDNSMemPool(1024);
+    mempool->initialize();
+}
+
+DOTCONFDocument::~DOTCONFDocument()
+{
+    for(std::list<DOTCONFDocumentNode*>::iterator i = nodeTree.begin(); i != nodeTree.end(); ++i){
+        delete(*i);
+    }
+    for(std::list<char*>::iterator i = requiredOptions.begin(); i != requiredOptions.end(); ++i){
+        free(*i);
+    }
+    for(std::list<char*>::iterator i = processedFiles.begin(); i != processedFiles.end(); ++i){
+        free(*i);
+    }
+    free(fileName);
+    delete mempool;
+}
+
+int DOTCONFDocument::cleanupLine(char * line)
+{
+    char * start = line;
+    char * bg = line;
+    bool multiline = false;
+    bool concat = false;
+    char * word = NULL;
+
+    if(!words.empty() && quoted)
+        concat = true;
+
+    while(*line){
+        if((*line == '#' || *line == ';') && !quoted){
+            *bg = 0;
+            if(strlen(start)){
+                //printf("2start='%s'\n", start);
+                if(concat){
+                    word = (char*)mempool->alloc(strlen(words.back())+strlen(start)+1);
+                    strcpy(word, words.back());
+                    strcat(word, start);
+                    words.pop_back();
+                    concat = false;
+                } else {
+                    word = mempool->strdup(start);
+                }
+                words.push_back(word);
+            }
+            break;
+        }
+        if(*line == '=' && !quoted){ // 'parameter = value' is the same as 'parameter value' but do not replace with ' ' when used in quoted value
+            *line = ' ';continue;
+        }
+        if(*line == '\\' && (*(line+1) == '"' || *(line+1) == '\'')){
+            *bg++ = *(line+1); 
+            line+=2; continue;
+        }
+        if(*line == '\\' && *(line+1) == 'n'){
+            *bg++ = '\n'; 
+            line+=2; continue;
+        }
+        if(*line == '\\' && *(line+1) == 'r'){
+            *bg++ = '\r'; 
+            line+=2; continue;
+        }
+        if(*line == '\\' && (*(line+1) == '\n' || *(line+1) == '\r')){ //multiline
+            *bg = 0;
+            if(strlen(start)){
+                //printf("3start='%s'\n", start);
+                if(concat){
+                    word = (char*)mempool->alloc(strlen(words.back())+strlen(start)+1);
+                    strcpy(word, words.back());
+                    strcat(word, start);
+                    words.pop_back();
+                    concat = false;
+                } else {
+                    word = mempool->strdup(start);
+                }
+                words.push_back(word);
+            }
+            multiline = true;
+            break;
+        }
+        if(*line == '"' || *line == '\''){ //need to handle quotes because of spaces or = that may be between
+            quoted = !quoted;
+            line++; continue;
+        }
+        if(isspace(*line) && !quoted){
+            *bg++ = 0;
+            if(strlen(start)){
+                //printf("start='%s'\n", start);
+                if(concat){
+                    word = (char*)mempool->alloc(strlen(words.back())+strlen(start)+1);
+                    strcpy(word, words.back());
+                    strcat(word, start);
+                    words.pop_back();
+                    concat = false;
+                } else {
+                    word = mempool->strdup(start);
+                }
+                words.push_back(word);
+            }
+            start = bg;
+            while(isspace(*++line)) {};
+            continue;
+        }
+        *bg++ = *line++;
+    }    
+
+    if(quoted && !multiline){
+        error(curLine, fileName, "unterminated quote");
+        return -1;
+    }
+
+    return multiline?1:0;
+}
+
+int DOTCONFDocument::parseLine()
+{
+    char * word = NULL;
+    char * nodeName = NULL;
+    char * nodeValue = NULL;
+    DOTCONFDocumentNode * tagNode = NULL;
+    bool newNode = false;
+
+    for(std::list<char*>::iterator i = words.begin(); i != words.end(); ++i) {
+        word = *i;
+
+        if(*word == '<'){
+            newNode = true;
+        }
+
+        if(newNode){
+            nodeValue = NULL;
+            nodeName = NULL;
+            newNode = false;
+        }
+
+        size_t wordLen = strlen(word);
+        if(word[wordLen-1] == '>'){
+            word[wordLen-1] = 0;
+            newNode = true;
+        }
+
+        if(nodeName == NULL){
+            nodeName = word;
+            bool closed = true; //if this not <> node then it is closed by default
+            if(*nodeName == '<'){
+                if(*(nodeName+1) != '/'){ //opening tag
+                    nodeName++;
+                    closed = false;
+                } else { //closing tag
+                    nodeName+=2;
+                    std::list<DOTCONFDocumentNode*>::reverse_iterator i=nodeTree.rbegin();
+                    for(; i!=nodeTree.rend(); ++i){
+                        if(!cmp_func(nodeName, (*i)->name) && !(*i)->closed){
+                            (*i)->closed = true;
+                            curParent = (*i)->parentNode;
+                            curPrev = *i;
+                            break;
+                        }
+                    }
+                    if(i==nodeTree.rend()){
+                        error(curLine, fileName, "not matched closing tag </%s>", nodeName);
+                        return -1;
+                    }
+                    continue;
+                }
+            }
+            tagNode = new DOTCONFDocumentNode;
+            tagNode->name = strdup(nodeName);
+            tagNode->document = this;
+            tagNode->fileName = processedFiles.back();
+            tagNode->lineNum = curLine;
+            tagNode->closed = closed;
+            if(!nodeTree.empty()){
+                DOTCONFDocumentNode * prev = nodeTree.back();
+                if(prev->closed){
+
+                    curPrev->nextNode = tagNode;
+                    tagNode->previousNode = curPrev;
+                    tagNode->parentNode = curParent;
+
+                } else {
+                    prev->childNode = tagNode;
+                    tagNode->parentNode = prev;
+                    curParent = prev;
+                }
+            }
+            nodeTree.push_back(tagNode);
+            curPrev = tagNode;
+        } else {
+            nodeValue = word;
+            tagNode->pushValue(nodeValue);
+        }
+    }
+    
+    return 0;
+}
+int DOTCONFDocument::parseFile(DOTCONFDocumentNode * _parent)
+{
+    char str[512];
+    int ret = 0;
+    curLine = 0;
+    curParent = _parent;
+
+    quoted = false;
+
+    while(fgets(str, 511, file)){
+        curLine++;
+	size_t slen = strlen(str);
+        if( slen >= 510 ){
+            error(curLine, fileName, "warning: line too long");
+        }
+	if(str[slen-1] != '\n'){
+	    str[slen] = '\n';
+	    str[slen+1] = 0;
+	}
+        if((ret = cleanupLine(str)) == -1){
+            break;
+        }
+        if(ret == 0){
+            if(!words.empty()){
+                ret = parseLine();
+                mempool->free();
+                words.clear();
+                if(ret == -1){
+                    break;
+                }
+            }            
+        }
+    }
+
+    return ret;
+}
+
+int DOTCONFDocument::checkConfig(const std::list<DOTCONFDocumentNode*>::iterator & from)
+{
+    int ret = 0;
+
+    for(std::list<DOTCONFDocumentNode*>::iterator i = from; i != nodeTree.end(); ++i){
+        DOTCONFDocumentNode * tagNode = *i;
+        if(!tagNode->closed){
+            error(tagNode->lineNum, tagNode->fileName, "unclosed tag %s", tagNode->name);
+            ret = -1;
+            break;
+        }
+        int vi = 0;
+        while( vi < tagNode->valuesCount ){
+            //if((tagNode->values[vi])[0] == '$' && (tagNode->values[vi])[1] == '{' && strchr(tagNode->values[vi], '}') ){
+            if(strstr(tagNode->values[vi], "${") && strchr(tagNode->values[vi], '}') ){
+                ret = macroSubstitute(tagNode, vi );
+                mempool->free();
+                if(ret == -1){
+                    break;
+                }
+            }
+            vi++;
+        }
+        if(ret == -1){
+            break;
+        }
+    }
+
+    return ret;
+}
+
+int DOTCONFDocument::setContent(const char * _fileName)
+{    
+    int ret = 0;
+    char realpathBuf[PATH_MAX];
+
+    if(realpath(_fileName, realpathBuf) == NULL){
+        error(0, _fileName, "%s", strerror(errno));
+        return -1;
+    }
+
+    fileName = strdup(realpathBuf);
+
+    char * forPathName = strdup(realpathBuf);
+
+    if (forPathName == NULL) {
+        error(0, NULL, "Not enought memory to duplicate realpath");
+        return -1;
+    }
+
+    char * _pathName = dirname(forPathName);
+
+    std::string pathName(_pathName);
+
+    free(forPathName); // From strdup
+
+    processedFiles.push_back(strdup(realpathBuf));
+
+    if(( file = fopen(fileName, "r")) == NULL){
+        error(0, NULL, "failed to open file '%s': %s", fileName, strerror(errno));
+        return -1;
+    }
+
+    ret = parseFile();
+    
+    (void) fclose(file);
+
+    if(!ret){
+    
+        if( (ret = checkConfig(nodeTree.begin())) == -1){
+            return -1;
+        }
+
+        std::list<DOTCONFDocumentNode*>::iterator from;
+        DOTCONFDocumentNode * tagNode = NULL;
+        int vi = 0;
+        for(std::list<DOTCONFDocumentNode*>::iterator i = nodeTree.begin(); i!=nodeTree.end(); ++i){
+            tagNode = *i;
+            if(!cmp_func("IncludeFile", tagNode->name)){
+                vi = 0;
+                while( vi < tagNode->valuesCount ){
+                    glob_t globBuf;
+                    std::string nodeFilePath;
+                    if (*tagNode->values[vi] != '/') {
+                        // Relative path
+                        nodeFilePath = pathName + "/" + tagNode->values[vi];
+                    } else {
+                        // Absolute path
+                       nodeFilePath = tagNode->values[vi];
+                    }
+                    int res = glob(nodeFilePath.c_str(), 0, NULL, &globBuf);
+                    if (res) {
+                        switch (res) {
+                            case GLOB_NOSPACE:
+                                error(tagNode->lineNum, tagNode->fileName, "glob call failed for '%s': no free space", nodeFilePath.c_str());
+                                return -1;
+#ifndef FREE_BSD
+                            case GLOB_ABORTED:
+                                // printf("Read error\n");
+                                // Ignore that error
+                                break;
+                            case GLOB_NOMATCH:
+                                // printf("No match\n");
+                                // Ignore that error
+                                break;
+#endif
+                            default:
+                                error(tagNode->lineNum, tagNode->fileName, "glob call failed for '%s': unknown error", nodeFilePath.c_str());
+                                return -1;
+                        }
+                    }
+                    if (!res) {
+                        for (size_t i = 0; i < globBuf.gl_pathc; ++i) {
+                            std::string nodeFilePath(globBuf.gl_pathv[i]);
+                            if(access(nodeFilePath.c_str(), R_OK) == -1){
+                                error(tagNode->lineNum, tagNode->fileName, "%s: %s", nodeFilePath.c_str(), strerror(errno));
+                                continue;
+                            }
+                            if(realpath(nodeFilePath.c_str(), realpathBuf) == NULL){
+                                error(tagNode->lineNum, tagNode->fileName, "realpath(%s) failed: %s", nodeFilePath.c_str(), strerror(errno));
+                                continue;
+                            }
+
+                            bool processed = false;
+                            for(std::list<char*>::const_iterator itInode = processedFiles.begin(); itInode != processedFiles.end(); ++itInode){
+                                if(!strcmp(*itInode, realpathBuf)){
+                                    processed = true;
+                                    break;
+                                }
+                            }
+                            if(processed){
+                                break;
+                            }
+
+                            processedFiles.push_back(strdup(realpathBuf));
+
+                            file = fopen(nodeFilePath.c_str(), "r");
+                            if(file == NULL){
+                                error(tagNode->lineNum, fileName, "failed to open file '%s': %s", nodeFilePath.c_str(), strerror(errno));
+                                continue;
+                            }
+                            //free(fileName);
+                            fileName = strdup(realpathBuf);
+                            from = nodeTree.end(); --from;
+                            
+                            if(tagNode->parentNode){
+                                DOTCONFDocumentNode * nd = tagNode->parentNode->childNode;
+                                while(nd){
+                                    if(!nd->nextNode)
+                                        break;
+                                    nd = nd->nextNode;
+                                }
+
+                                curPrev = nd;
+                            }
+                            ret = parseFile(tagNode->parentNode);
+                            
+                            //ret = parseFile(tagNode->parentNode);
+                            (void) fclose(file);
+                            if(ret == -1)
+                                continue;
+                            if(checkConfig(++from) == -1){
+                                continue;
+                            }
+                        }
+                    }
+                    globfree(&globBuf);
+                    vi++;
+                }
+            }
+        }
+        /*
+        if( (ret = checkConfig(nodeTree.begin())) == -1){
+            return -1;
+        }
+        */
+
+        if(!requiredOptions.empty())
+            ret = checkRequiredOptions();
+    }
+
+    return ret;
+}
+
+int DOTCONFDocument::checkRequiredOptions()
+{
+    for(std::list<char*>::const_iterator ci = requiredOptions.begin(); ci != requiredOptions.end(); ++ci){
+        bool matched = false;
+        for(std::list<DOTCONFDocumentNode*>::iterator i = nodeTree.begin(); i!=nodeTree.end(); ++i){            
+            if(!cmp_func((*i)->name, *ci)){
+                matched = true;
+                break;
+            }
+        }
+        if(!matched){
+            error(0, NULL, "required option '%s' not specified", *ci);
+            return -1;
+        }
+    }
+    return 0;
+}
+
+void DOTCONFDocument::error(int lineNum, const char * fileName, const char * fmt, ...)
+{
+    va_list args;
+    va_start(args, fmt);
+
+    char msg[256];
+
+    vsnprintf(msg, 256, fmt, args);
+
+    size_t len = (lineNum!=0?strlen(fileName):0) + strlen(msg) + 50;
+    char * buf = (char*)mempool->alloc(len);
+
+    if(lineNum)
+        (void) snprintf(buf, len, "File '%s', line %d: %s\n", fileName, lineNum, msg);
+    else
+        (void) snprintf(buf, len, "File '%s':  %s\n", fileName, msg);
+
+    if (errorCallback) {
+        errorCallback(errorCallbackData, buf);
+    } else {
+        (void) vfprintf(stderr, buf, args);
+    }
+
+    va_end(args);
+}
+
+char * DOTCONFDocument::getSubstitution(char * macro, int lineNum)
+{
+    char * buf = NULL;
+    char * variable = macro+2;
+
+    char * endBr = strchr(macro, '}');
+
+    if(!endBr){
+        error(lineNum, fileName, "unterminated '{'");
+        return NULL;
+    }
+    *endBr = 0;
+
+    char * defaultValue = strchr(variable, ':');
+
+    if(defaultValue){
+        *defaultValue++ = 0;
+        if(*defaultValue != '-'){
+            error(lineNum, fileName, "incorrect macro substitution syntax");
+            return NULL;
+        }
+        defaultValue++;
+        if(*defaultValue == '"' || *defaultValue == '\''){
+            defaultValue++;
+            defaultValue[strlen(defaultValue)-1] = 0;
+        }
+    } else {
+        defaultValue = NULL;
+    }
+
+    char * subs = getenv(variable);
+    if( subs ){
+        buf = mempool->strdup(subs);
+    } else {
+        std::list<DOTCONFDocumentNode*>::iterator i = nodeTree.begin();
+        for(; i!=nodeTree.end(); ++i){            
+            DOTCONFDocumentNode * tagNode = *i;
+            if(!cmp_func(tagNode->name, variable)){
+                if(tagNode->valuesCount != 0){
+                    buf = mempool->strdup(tagNode->values[0]);
+                    break;
+                }
+            }
+        }
+        if( i == nodeTree.end() ){
+            if( defaultValue ){
+                buf = mempool->strdup(defaultValue);
+            } else {
+                error(lineNum, fileName, "substitution not found and default value not given");
+                return NULL;
+            }
+        }
+    }
+    return buf;
+}
+
+int DOTCONFDocument::macroSubstitute(DOTCONFDocumentNode * tagNode, int valueIndex)
+{
+    int ret = 0;
+    char * macro = tagNode->values[valueIndex];
+    size_t valueLen = strlen(tagNode->values[valueIndex])+1;
+    char * value = (char*)mempool->alloc(valueLen);
+    char * v = value;
+    char * subs = NULL;
+
+    while(*macro){
+        if(*macro == '$' && *(macro+1) == '{'){
+            char * m = strchr(macro, '}');
+            subs = getSubstitution(macro, tagNode->lineNum);
+            if(subs == NULL){
+                ret = -1;
+                break;
+            }
+            macro = m + 1;
+            *v = 0;
+            v = (char*)mempool->alloc(strlen(value)+strlen(subs)+valueLen);
+            strcpy(v, value);
+            value = strcat(v, subs);
+            v = value + strlen(value);
+            continue;
+        }
+        *v++ = *macro++;
+    }
+    *v = 0;
+
+    free(tagNode->values[valueIndex]);
+    tagNode->values[valueIndex] = strdup(value);
+    return ret;
+}
+
+const DOTCONFDocumentNode * DOTCONFDocument::getFirstNode() const
+{
+    if ( !nodeTree.empty() ) {
+        return *nodeTree.begin();
+    } else {
+        return NULL;
+    }
+}
+
+const DOTCONFDocumentNode * DOTCONFDocument::findNode(const char * nodeName, const DOTCONFDocumentNode * parentNode, const DOTCONFDocumentNode * startNode) const
+{
+    //printf("nodeName=%s, cont=%s, start=%s\n", nodeName, containingNode!=NULL?containingNode->name:"NULL", startNode!=NULL?startNode->name:"NULL");
+    
+    std::list<DOTCONFDocumentNode*>::const_iterator i = nodeTree.begin();
+
+    if(startNode == NULL)
+        startNode = parentNode;
+
+    if(startNode != NULL){
+        while( i != nodeTree.end() && (*i) != startNode ){
+            ++i;
+        }
+        if( i != nodeTree.end() ) ++i;
+    }
+
+    for(; i!=nodeTree.end(); ++i){
+        //if(parentNode != NULL && (*i)->parentNode != parentNode){
+	if((*i)->parentNode != parentNode){
+            continue;
+        }
+        if(!cmp_func(nodeName, (*i)->name)){
+            return *i;
+        }
+    }
+    return NULL;
+}
+
+void DOTCONFDocument::setRequiredOptionNames(const char ** requiredOptionNames)
+{
+    while(*requiredOptionNames){
+        requiredOptions.push_back(strdup( *requiredOptionNames ));
+        requiredOptionNames++;
+    }
+}
+