Hi, I am working on a project in which I am supposed to send a SOAP query over http.
While surfing on net I found the following link http://curl.haxx.se/mail/archive-2002-07/0036.html By taking inputs from the above link, I wrote the following sample code to collect application/system/security events from windows server: ************************************************************************ ************************************************************************ ************************** CURL *ch; struct curl_slist *headerlist=NULL; struct MemoryStruct *bodyStruct=NULL; char SoapReq[2000]=""; /* imaginary callback function */ size_t WriteMemoryCallback(void *ptr, size_t size, size_t nmemb, void *data) { register int realsize = size * nmemb; struct MemoryStruct *mem = (struct MemoryStruct *)data; mem->memory = (char *)realloc(mem->memory, mem->size + realsize + 1); // Application crashes here. if (mem->memory) { memcpy(&(mem->memory[mem->size]), ptr, realsize); mem->size += realsize; mem->memory[mem->size] = 0; } return realsize; } void Init() { ch = curl_easy_init(); curl_easy_setopt(ch, CURLOPT_URL, "http://10.31.251.161:5985/wsman";); curl_easy_setopt(ch, CURLOPT_POST, 1); curl_easy_setopt(ch, CURLOPT_HEADER, 1); curl_easy_setopt(ch, CURLOPT_VERBOSE, 1); curl_easy_setopt(ch, CURLOPT_WRITEFUNCTION, WriteMemoryCallback); if ((bodyStruct = (struct MemoryStruct *) malloc(sizeof(struct MemoryStruct))) == NULL) exit(1); curl_easy_setopt(ch, CURLOPT_FILE, bodyStruct); } void sendQuery(const char *arg1) { // I make sure that headerlist is erased before rebuilding it with the soap function curl_slist_free_all(headerlist); headerlist = curl_slist_append(headerlist, "Content-Type: text/xml"); headerlist = curl_slist_append(headerlist, "SOAPAction: \"\""); sprintf(SoapReq, "<s:Envelope xmlns:s=\"http://www.w3.org/2003/05/soap-envelope\"; xmlns:a=\"http://schemas.xmlsoap.org/ws/2004/08/addressing\"; xmlns:e=\"http://schemas.xmlsoap.org/ws/2004/08/eventing\"; xmlns:n=\"http://schemas.xmlsoap.org/ws/2004/09/enumeration\"; xmlns:w=\"http://schemas.dmtf.org/wbem/wsman/1/wsman.xsd\";><s:Header><a: To>http://10.31.251.161:5985/wsman</a:To><w:ResourceURI s:mustUnderstand=\"true\">http://schemas.microsoft.com/wbem/wsman/1/wind ows/EventLog</w:ResourceURI><a:ReplyTo><a:Address s:mustUnderstand=\"true\">http://schemas.xmlsoap.org/ws/2004/08/addressi ng/role/anonymous</a:Address></a:ReplyTo><a:Action s:mustUnderstand=\"true\">http://schemas.xmlsoap.org/ws/2004/08/eventing /Subscribe</a:Action><w:MaxEnvelopeSize s:mustUnderstand=\"true\">153600</w:MaxEnvelopeSize><a:MessageID>%s</a:M essageID><w:Locale xml:lang=\"en-US\" s:mustUnderstand=\"false\" /><w:OptionSet xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\";><w:Option Name=\"SubscriptionName\">RSAenVision</w:Option><w:Option Name=\"ContentFormat\">RenderedText</w:Option><w:Option Name=\"ReadExistingEvents\" xsi:nil=\"true\"/><w:Option Name=\"IgnoreChannelError\" xsi:nil=\"true\"/></w:OptionSet><w:OperationTimeout>PT60.000S</w:Operati onTimeout></s:Header><s:Body><e:Subscribe><e:Delivery Mode=\"http://schemas.dmtf.org/wbem/wsman/1/wsman/Pull\";><w:Heartbeats>P T2000.000S</w:Heartbeats><w:Locale xml:lang=\"en-US\"/><w:ContentEncoding>UTF-8</w:ContentEncoding></e:Deli very><w:Filter Dialect=\"http://schemas.microsoft.com/win/2004/08/events/eventquery\";>< QueryList><Query Id=\"0\"><Select Path=\"Application\">*</Select><Select Path=\"System\">*</Select><Select Path=\"Security\">*</Select></Query></QueryList></w:Filter><w:SendBookma rks/></e:Subscribe></s:Body></s:Envelope>", arg1); curl_easy_setopt(ch, CURLOPT_POSTFIELDS, SoapReq); curl_easy_setopt(ch, CURLOPT_HTTPHEADER, headerlist); curl_easy_perform(ch); } void EndReq() { free(bodyStruct); curl_slist_free_all(headerlist); curl_easy_cleanup(ch); } //////////////////////// void LibcurlImp::GetEventsFromSource1() { Init(); //Generate a UUID to be sent with SOAP query. UUID uuid; ::ZeroMemory(&uuid, sizeof(UUID)); ::UuidCreate(&uuid); UCHAR *pszUuid = NULL; ::UuidToString(&uuid, &pszUuid); char szFormatName[54] = {0}; sprintf(szFormatName, "%s:%s", "uuid", pszUuid); std::string strFormatName(szFormatName); sendQuery(strFormatName.c_str()); printf("Retour: %s\n", bodyStruct->memory); EndReq(); } ************************************************************************ ************************************************************************ ************************** Could you please have a look into this & let me know if I am missing anything. The application crashes in "WriteMemoryCallback" function at the line marked in red. Also, I have kept the lines, I am not sure about, in bold. * Is there anything anything which I am missing here, that might be the the reason for crash? * Also, is this fine to send a SOAP query, this way? Any help on this is really appreciated. Thanks & Regards, Nitin ------------------------------------------------------------------- List admin: http://cool.haxx.se/list/listinfo/curl-library Etiquette: http://curl.haxx.se/mail/etiquette.html
