学步园

不用太多解释，需要的自然有用。稍微有一丝难度的是某个地方用到回调函数，关于回调函数的概念，请百度。

程序中用到XPath，不了解的可以看这里：
http://www.w3school.com.cn/xpath/index.asp

还有这里：
http://www.zvon.org/xxl/XPathTutorial/General_chi/examples.html

#include <stdio.h><br /> #include <string.h><br /> #include <curl/curl.h><br /> #include <time.h><br /> #include <libxml/parser.h><br /> #include <libxml/xmlmemory.h><br /> #include <libxml/xpath.h><br /> #include <libxml/xpathInternals.h><br /> static void set_prop(xmlXPathContextPtr context, const xmlChar *xpath, const xmlChar *name, const xmlChar *value){<br /> xmlXPathObjectPtr result = xmlXPathEvalExpression(xpath, context);<br /> if (result) {<br /> xmlSetProp(result->nodesetval->nodeTab[0], (const xmlChar *) name, (const xmlChar *) value);<br /> xmlXPathFreeObject (result);<br /> }<br /> }<br /> static void set_value(xmlXPathContextPtr context, const xmlChar *xpath, const xmlChar *value){<br /> xmlXPathObjectPtr result = xmlXPathEvalExpression(xpath, context);<br /> if ( result ) {<br /> xmlNodeSetPtr nodeset = result->nodesetval;<br /> xmlNodeSetContent(nodeset->nodeTab[0], value);<br /> xmlXPathFreeObject(result);<br /> }<br /> }<br /> static void get_request(<br /> char *buffer,<br /> int *len,<br /> const char *orderno,<br /> const char *username,<br /> const char *password,<br /> const char *imsi,<br /> const char *action,<br /> const char *serivcename) {<br /> xmlChar *buff;<br /> xmlDocPtr doc;<br /> if ( strcmp(action, "A") == 0 ) {<br /> doc = xmlParseFile("mobb_activate.xml");<br /> }<br /> else if ( strcmp(action, "D") == 0 ) {<br /> doc = xmlParseFile("mobb_cancel.xml");<br /> }<br /> else {<br /> doc = xmlParseFile("mobb_status.xml");<br /> }<br /> if ( doc == NULL ) {<br /> printf("xmlParseFile failed/n");<br /> return;<br /> }<br /> xmlXPathContextPtr context = xmlXPathNewContext(doc);<br /> if ( context == NULL ) {<br /> printf("xmlXPathNewContext failed/n");<br /> return;<br /> }<br /> time_t now;<br /> struct tm ts;<br /> char timestamp[80];<br /> time(&now);<br /> ts = *localtime(&now);<br /> strftime(timestamp, sizeof(timestamp), "%Y-%m-%dT%H:%M:%S+08:00", &ts);<br /> set_prop(context, (const xmlChar *)"//ProvisioningRequest", (const xmlChar *) "TransactionId", (const xmlChar *) orderno);<br /> set_value(context, (const xmlChar *)"//Login", (const xmlChar *) username);<br /> set_value(context, (const xmlChar *)"//Password", (const xmlChar *) password);<br /> set_value(context, (const xmlChar *)"//TimeStamp", (const xmlChar *) timestamp);<br /> set_value(context, (const xmlChar *)"//ProvisioningDataItem[@name='IMSI']", (const xmlChar *) imsi);<br /> if ( strcmp(action, "A") == 0 ) {<br /> set_value(context, (const xmlChar *)"//ProvisioningDataItem[@name='ServiceName']", (const xmlChar *) serivcename);<br /> }<br /> xmlDocDumpMemory(doc, &buff, len);<br /> strcpy(buffer, (char *) buff);<br /> printf("%s/n", buffer);<br /> xmlFree(buff);<br /> xmlXPathFreeContext(context);<br /> xmlFreeDoc(doc);<br /> xmlCleanupParser();<br /> }<br /> static size_t get_response(void *ptr, size_t size, size_t nmemb, void *stream) {<br /> char resp[2048];<br /> strcpy(resp, (char *) ptr);<br /> if ( strncmp(resp, "<?xml", 5) == 0 ) {<br /> printf("%s/n", resp);<br /> xmlDocPtr doc = xmlParseMemory(resp, strlen(resp));<br /> xmlXPathContextPtr context = xmlXPathNewContext(doc);<br /> xmlXPathObjectPtr result = xmlXPathEvalExpression((const xmlChar *) "//ErrorCode", context);<br /> if ( result ) {<br /> xmlNodeSetPtr nodeset = result->nodesetval;<br /> printf("MD_RT_CODE: %s/n", xmlNodeGetContent(nodeset->nodeTab[0]));<br /> xmlXPathFreeObject(result);<br /> }<br /> result = xmlXPathEvalExpression((const xmlChar *) "//ErrorDescription", context);<br /> if ( result ) {<br /> xmlNodeSetPtr nodeset = result->nodesetval;<br /> printf("MD_RT_MESSAGE: %s/n", xmlNodeGetContent(nodeset->nodeTab[0]));<br /> xmlXPathFreeObject(result);<br /> }<br /> xmlXPathFreeContext(context);<br /> xmlFreeDoc(doc);<br /> }<br /> return strlen(resp);<br /> }<br /> int main(int argc, char **argv) {<br /> if ( argc < 7 || argc > 8 ) {<br /> printf("Usage: BlackBerryProv endpoint username password orderno imsi action [servicename]/n");<br /> exit(-1);<br /> }<br /> const char *action = argv[6];<br /> if ( strcmp(action, "A") != 0 && strcmp(action, "D") != 0 && strcmp(action, "S") != 0 ) {<br /> printf("action must be A (Activation), D (De-activation) or S (Status)/n");<br /> exit(-1);<br /> }<br /> if ( strcmp(action, "A") == 0 && argc == 7 ) {<br /> printf("service name is needed in activation/n");<br /> exit(-1);<br /> }<br /> const char *endpoint = argv[1];<br /> const char *username = argv[2];<br /> const char *password = argv[3];<br /> const char *orderno = argv[4];<br /> const char *imsi = argv[5];<br /> const char *servicename = argv[7];<br /> char buffer[2048];<br /> int len = 0;<br /> get_request(buffer, &len, orderno, username, password, imsi, action, servicename);<br /> struct curl_slist *headers = NULL;<br /> CURL *curl = curl_easy_init();<br /> if ( curl ) {<br /> curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0);<br /> //curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 0);<br /> curl_easy_setopt(curl, CURLOPT_URL, endpoint);<br /> curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);<br /> curl_easy_setopt(curl, CURLOPT_POSTFIELDS, buffer);<br /> curl_easy_setopt(curl, CURLOPT_POSTFIELDSIZE, strlen(buffer));<br /> curl_easy_setopt(curl, CURLOPT_POST, 1);<br /> curl_easy_setopt(curl, CURLOPT_VERBOSE, 1);<br /> curl_easy_setopt(curl, CURLOPT_HEADER, 1);<br /> curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1);<br /> if ( strcmp(action, "S") != 0 ) {<br /> curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, get_response);<br /> }<br /> curl_easy_perform(curl);<br /> /* always cleanup */<br /> curl_easy_cleanup(curl);<br /> curl_slist_free_all(headers);<br /> }<br /> return 0;<br /> }<br />