source: trunk/zoo-kernel/zoo_loader.c @ 10

Last change on this file since 10 was 10, checked in by djay, 10 years ago

Small fix to check if only one parameter was passed and if the first one is XML string (starting by the '<' character).

File size: 7.5 KB
Line 
1/**
2 * Author : Gérald FENOY
3 *
4 *  Copyright 2008-2009 GeoLabs SARL. All rights reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24
25#define MALLOC_CHECK_ 0
26#define MALLOC_CHECK 0
27
28/**
29 * Specific includes
30 */
31#include "fcgio.h"
32#include "fcgi_config.h"
33#include "fcgi_stdio.h"
34#include <sys/types.h>
35#include <unistd.h>
36#include "service_internal.h"
37
38extern "C" {
39#include "cgic.h"
40#include <libxml/tree.h>
41#include <libxml/xmlmemory.h>
42#include <libxml/parser.h>
43#include <libxml/xpath.h>
44#include <libxml/xpathInternals.h>
45}
46
47xmlXPathObjectPtr extractFromDoc(xmlDocPtr,char*);
48int runRequest(map*);
49
50using namespace std;
51
52/* ************************************************************************* */
53
54int errorException(maps *m, const char *message, const char *errorcode) 
55{
56  map * errormap = createMap("text", message);
57  addToMap(errormap,"code", errorcode);
58  printExceptionReportResponse(m,errormap);
59  freeMap(&errormap);
60  free(errormap);
61  return -1;
62}
63
64/* ************************************************************************* */
65
66#ifndef STRTOK_R
67char *
68strtok_r (char *s1, const char *s2, char **lasts)
69{
70  char *ret;
71
72  if (s1 == NULL)
73    s1 = *lasts;
74  while (*s1 && strchr(s2, *s1))
75    ++s1;
76  if (*s1 == '\0')
77    return NULL;
78  ret = s1;
79  while (*s1 && !strchr(s2, *s1))
80    ++s1;
81  if (*s1)
82    *s1++ = '\0';
83  *lasts = s1;
84  return ret;
85}
86
87#endif
88
89#define TRUE 1
90#define FALSE -1
91
92int cgiMain(){
93  /**
94   * We'll use cgiOut as the default output (stdout) to produce plain text
95   * response.
96   */
97  dup2(fileno(cgiOut),fileno(stdout));
98#ifdef DEBUG
99  fprintf(cgiOut,"Content-Type: text/plain; charset=utf-8\r\nStatus: 200 OK\r\n\r\n");
100  fprintf(cgiOut,"Welcome on ZOO verbose debuging mode \r\n\r\n");
101  fflush(cgiOut);
102#endif
103 
104  /**
105   * Read the main configuration file
106  if(!isStarted){
107    maps* m;
108    m=(maps*)malloc(sizeof(maps*)); 
109    conf_read("main.cfg",m);
110#ifdef REAL_FCGI
111#ifdef DEBUG
112    printf("ok passed");
113#endif   
114#endif   
115    isStarted=TRUE;
116  }
117   */
118
119#ifdef DEBUG
120  fprintf (stderr, "Addr:%s\n", cgiRemoteAddr); 
121  fprintf (stderr, "RequestMethod:%s\n", cgiRequestMethod); 
122  fprintf (stderr, "Request: %s\n", cgiQueryString);
123#endif
124
125  map* tmpMap=NULL;
126   
127  if(strncmp(cgiContentType,"text/xml",8)==0){
128    char *buffer=new char[cgiContentLength+1];
129    if(fread(buffer,1,cgiContentLength,cgiIn)){
130      buffer[cgiContentLength]=0;
131      tmpMap=createMap("request",buffer);
132    }else{
133      /* Here we have to return an error message ... */
134      fprintf(stderr, "Unable to read cgi content in zoo_loader.c line %i\n", __LINE__);     
135      return 1; 
136    }
137    delete[]buffer;
138  }
139  else{
140    char **array, **arrayStep;
141    if (cgiFormEntries(&array) != cgiFormSuccess) {
142      return 1;
143    }
144    arrayStep = array;
145    while (*arrayStep) {
146      char *value=new char[cgiContentLength];
147      cgiFormStringNoNewlines(*arrayStep, value, cgiContentLength);
148#ifdef DEBUG
149      fprintf(stderr,"(( \n %s \n %s \n ))",*arrayStep,value);
150#endif
151      if(tmpMap!=NULL)
152        addToMap(tmpMap,*arrayStep,value);
153      else
154        tmpMap=createMap(*arrayStep,value);
155      arrayStep++;
156      delete[]value;
157    }
158    cgiStringArrayFree(array);
159  }
160
161  /**
162   * In case that the POST method was used, then check if params came in XML
163   * format else try to use the attribute "request" which should be the only
164   * one.
165   */
166  fprintf(stderr,"%i %i",tmpMap->value[0],'<');
167  if(strncasecmp(cgiRequestMethod,"post",4)==0 || 
168     (count(tmpMap)==1 && strncmp(tmpMap->value,"<",1)==0)){
169    /**
170     * First include the MetaPath and the ServiceProvider default parameters
171     * (which should be always available in GET params so in cgiQueryString)
172     */
173    //char *saveptr1, *saveptr2;
174    char *str1/*, str2, *token, *subtoken*/;
175    str1=cgiQueryString;
176    /**
177     * Store the original XML request in xrequest map
178     */
179    map* t1=getMap(tmpMap,"request");
180    if(t1!=NULL){
181      addToMap(tmpMap,"xrequest",t1->value);
182      xmlInitParser();
183      xmlDocPtr doc = xmlParseMemory(t1->value,cgiContentLength);
184      xmlNodePtr cur = xmlDocGetRootElement(doc);
185      char *tval;
186      tval=NULL;
187      tval = (char*) xmlGetProp(cur,BAD_CAST "service");
188      if(tval!=NULL)
189        addToMap(tmpMap,"service",tval);
190      tval=NULL;
191      tval = (char*) xmlGetProp(cur,BAD_CAST "language");
192      if(tval!=NULL)
193        addToMap(tmpMap,"language",tval);
194     
195      char* requests[3];
196      requests[0]="GetCapabilities";
197      requests[1]="DescribeProcess";
198      requests[2]="Execute";
199      for(int j=0;j<3;j++){
200        char tt[35];
201        sprintf(tt,"/*[local-name()='%s']",requests[j]);
202        xmlXPathObjectPtr reqptr=extractFromDoc(doc,tt);
203        if(reqptr!=NULL){
204          xmlNodeSet* req=reqptr->nodesetval;
205#ifdef DEBUG
206          fprintf(stderr,"%i",req->nodeNr);
207#endif
208          if(req!=NULL && req->nodeNr==1){
209            t1->value=requests[j];
210            j=2;
211          }
212          xmlXPathFreeObject(reqptr);
213        }
214        //xmlFree(req);
215      }
216      if(strncasecmp(t1->value,"GetCapabilities",15)==0){
217        xmlXPathObjectPtr versptr=extractFromDoc(doc,"/*/*/*[local-name()='Version']");
218        xmlNodeSet* vers=versptr->nodesetval;
219        xmlChar* content=xmlNodeListGetString(doc, vers->nodeTab[0]->xmlChildrenNode,1);
220        addToMap(tmpMap,"version",(char*)content);
221        xmlXPathFreeObject(versptr);
222        //xmlFree(vers);
223        xmlFree(content);
224      }else{
225        tval=NULL;
226        tval = (char*) xmlGetProp(cur,BAD_CAST "version");
227        if(tval!=NULL)
228          addToMap(tmpMap,"version",tval);
229        xmlFree(tval);
230        tval = (char*) xmlGetProp(cur,BAD_CAST "language");
231        if(tval!=NULL)
232          addToMap(tmpMap,"language",tval);
233        xmlXPathObjectPtr idptr=extractFromDoc(doc,"/*/*[local-name()='Identifier']");
234        if(idptr!=NULL){
235          xmlNodeSet* id=idptr->nodesetval;
236          if(id!=NULL){
237            char* identifiers=NULL;
238            identifiers=(char*)calloc(cgiContentLength,sizeof(char));
239            identifiers[0]=0;
240            for(int k=0;k<id->nodeNr;k++){
241              xmlChar* content=xmlNodeListGetString(doc, id->nodeTab[k]->xmlChildrenNode,1);
242              if(strlen(identifiers)>0){
243                char *tmp=strdup(identifiers);
244                snprintf(identifiers,strlen(tmp)+xmlStrlen(content)+2,"%s,%s",tmp,content);
245                free(tmp);
246              }
247              else{
248                snprintf(identifiers,xmlStrlen(content)+1,"%s",content);
249              }
250              xmlFree(content);
251            }
252            xmlXPathFreeObject(idptr);
253            addToMap(tmpMap,"Identifier",identifiers);
254            free(identifiers);
255          }
256        }
257        //xmlFree(id);
258      }
259      xmlFree(tval);
260      xmlFreeDoc(doc);
261      xmlCleanupParser();
262    }
263  }
264
265  runRequest(tmpMap);
266
267  /**
268   * Required but can't be made after executing a process using POST requests.
269   */
270  if(strncasecmp(cgiRequestMethod,"post",4)!=0 && count(tmpMap)!=1 && tmpMap!=NULL){
271    freeMap(&tmpMap);
272    free(tmpMap);
273  }
274  return 0;
275
276}
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