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/*
* Stonith module for Dell DRACIII (Dell Remote Access Card)
*
* Copyright (C) 2003 Alfa21 Outsourcing
* Copyright (C) 2003 Roberto Moreda <moreda@alfa21.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <lha_internal.h>
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <curl/curl.h>
#include <libxml/xmlmemory.h>
#include <libxml/parser.h>
#include <libxml/xpath.h>
#include "drac3_command.h"
#include "drac3_hash.h"
#define BUFLEN 1024 /* buffer */
#define SBUFLEN 256 /* small buffer */
#define MD5LEN 16 /* md5 buffer */
#define DEBUG 0
/* Hardcoded XML commands and response codes */
#define CMD_POWERCYCLE "<?XML version=\"1.0\"?><?RMCXML version=\"1.0\"?><RMCSEQ><REQ CMD=\"serveraction\"><ACT>powercycle</ACT></REQ></RMCSEQ>\n"
#define CMD_GETSYSINFO "<?XML version=\"1.0\"?><?RMCXML version=\"1.0\"?><RMCSEQ><REQ CMD=\"xml2cli\"><CMDINPUT>getsysinfo -A</CMDINPUT></REQ></RMCSEQ>\n"
#define RC_OK "0x0\n"
struct Chunk {
char *memory;
size_t size;
};
/* prototypes */
int xmlGetXPathString (const char *str, const char * expr, char * rc, const int len);
size_t writeFunction (void *ptr, size_t size, size_t nmemb, void *data);
/* ---------------------------------------------------------------------- *
* XML PARSING *
* ---------------------------------------------------------------------- */
int
xmlGetXPathString (const char *str,
const char * expr,
char * rc,
const int len)
{
xmlDocPtr doc;
xmlNodePtr cur;
xmlXPathContextPtr ctx;
xmlXPathObjectPtr path;
xmlChar *xmlRC;
if (!strchr(str,'<')) {
fprintf(stderr,"%s malformed\n", str);
rc[0] = 0x00;
return(1);
}
doc = xmlParseMemory(str, strlen(str));
xmlXPathInit();
ctx = xmlXPathNewContext(doc);
path = xmlXPathEvalExpression((const xmlChar *)expr, ctx);
cur = path->nodesetval->nodeTab[0];
if (cur != NULL) {
xmlRC = xmlNodeListGetString(doc, cur->xmlChildrenNode, 1);
snprintf(rc, len, "%s\n", xmlRC);
xmlFree(xmlRC);
xmlFreeDoc(doc);
xmlCleanupParser();
xmlXPathFreeObject(path);
xmlXPathFreeContext(ctx);
return(0);
} else {
fprintf(stderr,"error in obtaining XPath %s\n", expr);
xmlFreeDoc(doc);
xmlCleanupParser();
xmlXPathFreeObject(path);
xmlXPathFreeContext(ctx);
rc[0] = 0x00;
return(1);
}
}
/* ---------------------------------------------------------------------- *
* CURL CALLBACKS *
* ---------------------------------------------------------------------- */
size_t
writeFunction (void *ptr, size_t size, size_t nmemb, void *data)
{
register int realsize = size * nmemb;
struct Chunk *mem = (struct Chunk *)data;
mem->memory = (char *)realloc(mem->memory, mem->size + realsize + 1);
if (mem->memory) {
memcpy(&(mem->memory[mem->size]), ptr, realsize);
mem->size += realsize;
mem->memory[mem->size] = 0;
}
return realsize;
}
/* ---------------------------------------------------------------------- *
* DRAC3 CURL COMMANDS *
* ---------------------------------------------------------------------- */
int
drac3InitCurl (CURL *curl)
{
#ifdef CURLOPT_NOSIGNAL
if (curl_easy_setopt(curl, CURLOPT_NOSIGNAL, 1)) return(1);
#endif
if (curl_easy_setopt(curl, CURLOPT_TIMEOUT, 30)) return(1);
if (curl_easy_setopt(curl, CURLOPT_VERBOSE, 0)) return(1);
if (curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, writeFunction)) return(1);
if (curl_easy_setopt(curl, CURLOPT_COOKIEFILE, "/dev/null")) return(1);
if (curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0)) return(1);
if (curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 0)) return(1);
return(0);
}
int
drac3Login (CURL *curl,
const char *host,
const char *user,
const char *pass)
{
char url[BUFLEN];
char chall[BUFLEN];
char token[BUFLEN];
char rc[SBUFLEN];
int status;
struct Chunk chunk;
chunk.memory = NULL;
chunk.size = 0;
if (curl_easy_setopt(curl, CURLOPT_FILE, (void *)&chunk))
return(1);
/* ask for challenge */
snprintf(url, BUFLEN, "https://%s/cgi/challenge", host);
url[BUFLEN-1] = 0x00;
if (curl_easy_setopt(curl, CURLOPT_URL, url))
return(1);
if (curl_easy_perform(curl))
return(1);
/* extract challenge */
status = xmlGetXPathString(chunk.memory, "//CHALLENGE", chall, BUFLEN);
if (status) {
free(chunk.memory);
return(1);
}
/* calculate authToken */
drac3AuthHash(chall, pass, token, BUFLEN);
if (DEBUG) printf("T: %s\n", token);
status = xmlGetXPathString(chunk.memory, "//RC", rc, SBUFLEN);
if (status) {
free(chunk.memory);
return(1);
}
if (DEBUG) printf("RC: %s\n", rc);
status = (strcmp(rc, RC_OK) == 0) ? 0 : 1;
free(chunk.memory);
if (status) return(1);
chunk.memory = NULL;
chunk.size = 0;
/* sends authToken */
snprintf(url, BUFLEN, "https://%s/cgi/login?user=%s&hash=%s",
host,
user,
token);
url[BUFLEN-1] = 0x00;
if (curl_easy_setopt(curl, CURLOPT_URL, url))
return(1);
if (curl_easy_perform(curl))
return(1);
if (DEBUG) printf("R: %s\n", chunk.memory);
status = xmlGetXPathString(chunk.memory, "//RC", rc, SBUFLEN);
if (status) {
free(chunk.memory);
return(1);
}
if (DEBUG) printf("RC: %s\n", rc);
status = (strcmp(rc, RC_OK) == 0) ? 0 : 1;
free(chunk.memory);
return(status);
}
int
drac3PowerCycle (CURL *curl,
const char *host)
{
char url[BUFLEN];
char cmd[]=CMD_POWERCYCLE;
char rc[SBUFLEN];
int status;
struct Chunk chunk;
chunk.memory = NULL;
chunk.size = 0;
if (curl_easy_setopt(curl, CURLOPT_FILE, (void *)&chunk)) return(1);
snprintf(url, BUFLEN, "https://%s/cgi/bin",
host);
url[BUFLEN-1] = 0x00;
if (curl_easy_setopt(curl, CURLOPT_URL, url)) return(1);
if (curl_easy_setopt(curl, CURLOPT_POSTFIELDS, cmd)) return(1);
if (curl_easy_perform(curl)) return(1);
if (DEBUG) printf("R: %s\n", chunk.memory);
status = xmlGetXPathString(chunk.memory, "//RC", rc, SBUFLEN);
if (status) {
free(chunk.memory);
return(1);
}
if (DEBUG) printf("RC: %s\n", rc);
status = (strcmp(rc, RC_OK) == 0) ? 0 : 1;
free(chunk.memory);
return(status);
}
int
drac3GetSysInfo (CURL *curl,
const char *host)
{
char url[BUFLEN];
char cmd[]=CMD_GETSYSINFO;
char rc[SBUFLEN];
int status;
struct Chunk chunk;
chunk.memory = NULL;
chunk.size = 0;
if (curl_easy_setopt(curl, CURLOPT_FILE, (void *)&chunk)) return(1);
snprintf(url, BUFLEN, "https://%s/cgi/bin",
host);
url[BUFLEN-1] = 0x00;
if (curl_easy_setopt(curl, CURLOPT_URL, url)) return(1);
if (curl_easy_setopt(curl, CURLOPT_POSTFIELDS, cmd)) return(1);
if (curl_easy_perform(curl)) return(1);
if (DEBUG) printf("R: %s\n", chunk.memory);
status = xmlGetXPathString(chunk.memory, "//RC", rc, SBUFLEN);
if (status) {
free(chunk.memory);
return(1);
}
if (DEBUG) printf("RC: %s\n", rc);
status = (strcmp(rc, RC_OK) == 0) ? 0 : 1;
free(chunk.memory);
return(status);
}
int
drac3Logout (CURL *curl,
const char *host)
{
char url[BUFLEN];
char rc[SBUFLEN];
int status;
struct Chunk chunk;
chunk.memory = NULL;
chunk.size = 0;
if (curl_easy_setopt(curl, CURLOPT_FILE, (void *)&chunk)) return(1);
snprintf(url, BUFLEN, "https://%s/cgi/logout",
host);
url[BUFLEN-1] = 0x00;
if (curl_easy_setopt(curl, CURLOPT_URL, url)) return(1);
if (curl_easy_perform(curl)) return(1);
if (DEBUG) printf("R: %s\n", chunk.memory);
status = xmlGetXPathString(chunk.memory, "//RC", rc, SBUFLEN);
if (status) {
free(chunk.memory);
return(1);
}
if (DEBUG) printf("RC: %s\n", rc);
status = (strcmp(rc, RC_OK) == 0) ? 0 : 1;
free(chunk.memory);
return(status);
}
int
drac3VerifyLogin (CURL *curl,
const char *host)
{
/*We try to do a GetSysInfo */
return(drac3GetSysInfo (curl, host));
}
/* -------------------------------------------------------------------- */
|
