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webservice_interface.c
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webservice_interface.c
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/***
Copyright 2010-2021 by Omar Alejandro Herrera Reyna
Caume Data Security Engine, also known as CaumeDSE is released under the
GNU General Public License by the Copyright holder, with the additional
exemption that compiling, linking, and/or using OpenSSL is allowed.
LICENSE
This file is part of Caume Data Security Engine, also called CaumeDSE.
CaumeDSE 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 3 of the License, or
(at your option) any later version.
CaumeDSE 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 CaumeDSE. If not, see <http://www.gnu.org/licenses/>.
INCLUDED SOFTWARE
This product includes software developed by the OpenSSL Project
for use in the OpenSSL Toolkit (http://www.openssl.org/).
This product includes cryptographic software written by
Eric Young ([email protected]).
This product includes software written by
Tim Hudson ([email protected]).
This product includes software from the SQLite library that is in
the public domain (http://www.sqlite.org/copyright.html).
This product includes software from the GNU Libmicrohttpd project, Copyright
© 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
2008, 2009, 2010 , 2011, 2012 Free Software Foundation, Inc.
This product includes software from Perl5, which is Copyright (C) 1993-2005,
by Larry Wall and others.
***/
#include "common.h"
int cmeWebServiceAnswerConnection (void *cls, struct MHD_Connection *connection, const char *url,
const char *method, const char *version, const char *upload_data,
size_t *upload_data_size, void **con_cls)
{
#define GET 0
#define POST 1
int cont,responseEncoding __attribute__((unused)),result;
int exitcode=1;
int numUrlElements=0;
int responseCode=0;
static time_t connectionStartTime=0;
static long int requestDataSize=0;
long int responseDataSize=0;
char *page=NULL;
const char *pOutputType=NULL; //Ptr to constant str. for output type. No need to free.
char **urlElements=NULL;
struct MHD_Response *response=NULL;
struct MHD_Response *responseFile=NULL;
char **headerElements=NULL;
char **argumentElements=NULL;
char **responseHeaders=NULL;
char *responseText=NULL;
char *responseFilePath=NULL;
struct cmeWebServiceConnectionInfoStruct *con_info=NULL; //We will free this struct in cmeWebServiceRequestCompleted().
struct cmeWebServiceContentReaderStruct *cr_info=NULL; //We will free this struct in cmeContentReaderFreeCallback();
struct stat statResponseFile;
#define cmeWebServiceAnswerConnectionFree() \
do { \
cmeFree(page); \
cmeFree(responseText); \
if (response) \
{ \
MHD_destroy_response (response); \
} \
if (responseFile) \
{ \
MHD_destroy_response (responseFile); \
} \
if (numUrlElements) \
{ \
cont=0; \
while (cont<numUrlElements) \
{ \
cmeFree(urlElements[cont]); \
cont++; \
} \
cmeFree(urlElements); \
} \
if (headerElements) \
{ \
cont=0; \
while (cont<(cmeWSHTTPMaxHeaders*2)) \
{ \
cmeFree(headerElements[cont]); \
cont++; \
} \
cmeFree(headerElements); \
} \
if (argumentElements) \
{ \
cont=0; \
while (cont<(cmeWSURIMaxArguments*2)) \
{ \
cmeFree(argumentElements[cont]); \
cont++; \
} \
cmeFree(argumentElements); \
} \
if (responseHeaders) \
{ \
cont=0; \
while (cont<(cmeWSHTTPMaxHeaders*2)) \
{ \
cmeFree(responseHeaders[cont]); \
cont++; \
} \
cmeFree(responseHeaders); \
} \
if (responseFilePath) \
{ \
cmeFree(responseFilePath); \
} \
} while (0); //Local free() macro.
responseEncoding=cmeWSEncoding_HTML; //by default we use HTML responses on new requests
if (NULL == *con_cls) //New connection; set POST processor if needed.
{
con_info = (struct cmeWebServiceConnectionInfoStruct *) malloc (sizeof (struct cmeWebServiceConnectionInfoStruct));
if (NULL == con_info) //Error.
{
#ifdef ERROR_LOG
fprintf(stderr,"CaumeDSE Error: cmeWebServiceAnswerConnection(), malloc() can't allocate memory for cmeWebServiceConnectionInfoStruct."
" Method: '%s', url: '%s'!\n",method,url);
#endif
return MHD_NO;
}
connectionStartTime=time(NULL);
requestDataSize=(long int)*upload_data_size;
con_info->threadStatus=0;
con_info->answerString=NULL;
con_info->answerCode=0;
con_info->filePointer=NULL;
con_info->fileName=NULL;
con_info->connectionType=0;
con_info->connection=connection;
con_info->postProcessor=NULL;
con_info->postArglist=(char **)malloc((sizeof (char *))*cmeWSHTTPMaxHeaders*2); //*2 since Argument lists consist of argumentElements PAIRS.
for (cont=0;cont<(cmeWSHTTPMaxHeaders*2);cont++) //Clear pointers.
{
con_info->postArglist[cont]=NULL;
}
con_info->postArgCont=0;
if (0 == strcmp (method, "POST"))
{ // NOTE (OHR#9#): For MHD_create_post_processor to work properly, encoding (form "enctype" / header "Content-Type") must be defined;
// otherwise NULL will be returned. It should be either "application/x-www-form-urlencoded", "text/plain" or "multipart/form-data".
con_info->postProcessor=MHD_create_post_processor(connection,cmeWSPostBufferSize,(MHD_PostDataIterator)&cmeWebServicePOSTIteration,(void *) con_info);
if (!con_info->postProcessor) //Warning, can't create post processor; we probably need an emulated POST with a GET style method (i.e. URL parameters).
{
#ifdef DEBUG
fprintf(stderr,"CaumeDSE Debug: cmeWebServiceAnswerConnection(), MHD_create_post_processor() Failed."
" Method: '%s', url: '%s'!\n",method,url);
fprintf(stdout,"CaumeDSE Debug: cmeWebServiceAnswerConnection(), new connectionType = GET (emulated GET for POST). "
"Method: %s, url: %s.\n", method, url);
#endif
//cmeFree(con_info);
con_info->connectionType=GET; //Don't reject a POST with parameters in the URI, process as a GET request
con_info->threadStatus=2;
//return MHD_NO;
}
else
{
#ifdef DEBUG
fprintf(stdout,"CaumeDSE Debug: cmeWebServiceAnswerConnection(), new connectionType = POST. "
"Method: %s, url: %s.\n", method, url);
#endif
con_info->connectionType=POST;
}
}
else
{
#ifdef DEBUG
fprintf(stdout,"CaumeDSE Debug: cmeWebServiceAnswerConnection(), new connectionType = GET. "
"Method: %s, url: %s.\n", method, url);
#endif
con_info->connectionType=GET;
con_info->threadStatus=2;
}
*con_cls=(void *)con_info;
return MHD_YES;
}
else
{
con_info=*con_cls;
requestDataSize+=(long int)*upload_data_size;
}
if ((con_info->connectionType)==POST) //Iterate POST request.
{
if (*upload_data_size != 0) //If data is available, retrieve it and exit function for another iteration.
{
MHD_post_process (con_info->postProcessor, upload_data,*upload_data_size);
*upload_data_size = 0;
return MHD_YES;
}
else if (NULL != con_info->answerString) //If no data is available but we have an answer, signal job is done.
{
con_info->threadStatus=1; //Signal: POST iterator job is done, waiting...
}
if (con_info->filePointer) //We need to close the file before cmeWebServiceRequestCompleted() is called, since cmeWebServiceProcessRequest() will use it.
{
fclose (con_info->filePointer);
con_info->filePointer=NULL;
}
}
do //Wait until the POST processor has collected all data.
{
sleep(cmeDefaultThreadWaitSeconds);
} while (con_info->threadStatus==0);
//Allocate space for headers and response headers:
headerElements=(char **)malloc((sizeof (char *))*cmeWSHTTPMaxHeaders*2); //*2 since headers consist of headerElements PAIRS.
responseHeaders=(char **)malloc((sizeof (char *))*cmeWSHTTPMaxResponseHeaders*2); //*2 since headers consist of headerElements PAIRS.
for (cont=0;cont<(cmeWSHTTPMaxHeaders*2);cont++) //Clear pointers.
{
headerElements[cont]=NULL;
responseHeaders[cont]=NULL;
}
//Allocate space for arguments:
argumentElements=(char **)malloc((sizeof (char *))*cmeWSURIMaxArguments*2); //*2 since elements consist of argumentElements PAIRS.
for (cont=0;cont<(cmeWSURIMaxArguments*2);cont++) //Clear pointers.
{
argumentElements[cont]=NULL;
}
#ifdef DEBUG
fprintf(stdout,"CaumeDSE Debug: cmeWebServiceAnswerConnection(), new %s request for %s using version %s\n", method, url, version);
#endif
cmeWebServiceParseURL(url, &urlElements, &numUrlElements); //Parse URL.
MHD_get_connection_values (connection, MHD_GET_ARGUMENT_KIND, (MHD_KeyValueIterator)&cmeWebServiceParseKeys, argumentElements); //Parse Headers.
MHD_get_connection_values (connection, MHD_HEADER_KIND, (MHD_KeyValueIterator)&cmeWebServiceParseKeys, headerElements); //Parse Arguments.
result=cmeWebServiceProcessRequest (&responseText,&responseFilePath,&responseHeaders,&responseCode,
url,(const char **)urlElements,numUrlElements,
(const char **)headerElements,(const char **)argumentElements,method,connection);
con_info->answerCode=responseCode;
if (responseFilePath) //We have a response File.
{
cr_info=(struct cmeWebServiceContentReaderStruct *) malloc (sizeof (struct cmeWebServiceContentReaderStruct)); //Create structure to pass among ContentReader iterations.
cr_info->fpResponseFile=NULL;
cr_info->fileName=NULL;
cmeStrConstrAppend(&(cr_info->fileName),"%s",responseFilePath); //Copy file path.
result=stat(responseFilePath,&statResponseFile);
if (!result) //OK, file exists and we got statistics
{
cr_info->fpResponseFile=fopen(responseFilePath,"rb");
if (cr_info->fpResponseFile) //File opened correctly
{
#ifdef DEBUG
fprintf(stdout,"CaumeDSE Debug: cmeWebServiceAnswerConnection(), user request successful "
"Method: '%s'. Url: '%s'. responseFilePath: '%s'.\n",method,url,responseFilePath);
#endif
//Create response from file:
responseDataSize=(long int)statResponseFile.st_size;
responseFile=MHD_create_response_from_callback(statResponseFile.st_size, //Size of file to read.
cmeDefaultContentReaderCallbackPageSize, //Page size for reading content.
&cmeContentReaderCallback, //MHD_ContentReaderCallback function.
cr_info, //void *crc_cls (i.e. ContentReaderCallback parameter).
&cmeContentReaderFreeCallback); //MHD_ContentReaderFreeCallback function.
if (!responseFile)//Error, could not create MHD_Response!
{
fclose(cr_info->fpResponseFile);
exitcode=MHD_NO;
}
else //OK, proceed creating response and adding headers.
{
if (responseHeaders[0] && responseHeaders[1]) //We got at least 1 response header. Process them
{
cont=0;
while ((responseHeaders[cont])&&(responseHeaders[cont+1])&&(cont<(cmeWSHTTPMaxHeaders*2)))
{
result=MHD_add_response_header(responseFile,responseHeaders[cont],responseHeaders[cont+1]);
cont+=2;
}
}
//Add default Headers:
result=MHD_add_response_header(responseFile,"Server","CaumeDSE " cmeEngineVersion);
exitcode=MHD_queue_response (connection, responseCode, responseFile); //Note that WebService processing function needs to define appropriate Content-Type headers
}
}
}
}
else // responseText with content or empty
{
if (responseText)
{
//Add default Headers:
if (cmeFindInArgPairList((const char **)responseHeaders,"Content-Type",&pOutputType)) //No Content-Type defined, so set one with the default: text/html.
{
cmeStrConstrAppend(&page,"%s%s%s",cmeWSHTMLPageStart,responseText,
cmeWSHTMLPageEnd); //Add page opening/closing tags and (c) to response page.
responseDataSize=(long int)strlen(page);
//Create response body:
response=MHD_create_response_from_buffer((size_t)responseDataSize,(void*) page, MHD_RESPMEM_MUST_COPY); //We have to create response body before adding headers.
result=MHD_add_response_header(response,"Content-Type","text/html; charset=utf-8");
}
else
{
cmeStrConstrAppend(&page,"%s",responseText); //Add plain response to response page.
responseDataSize=(long int)strlen(page);
//Create response body:
response=MHD_create_response_from_buffer((size_t)responseDataSize,(void*) page, MHD_RESPMEM_MUST_COPY);
}
#ifdef DEBUG
fprintf(stdout,"CaumeDSE Debug: cmeWebServiceAnswerConnection(), user request successful "
"Method: '%s'. Url: '%s'.\n responseText: '%s'.\n",method,url,page);
#endif
result=MHD_add_response_header(response,"Server","CaumeDSE " cmeEngineVersion);
}
else
{
//Create empty response body (e.g. for HEAD method):
responseDataSize=0;
response=MHD_create_response_from_buffer(0,NULL, MHD_RESPMEM_MUST_COPY);
//Add default Headers:
result=MHD_add_response_header(response,"Server","CaumeDSE " cmeEngineVersion);
}
if (responseHeaders[0] && responseHeaders[1]) //We got at least 1 response header. Process them
{
cont=0;
while ((responseHeaders[cont])&&(responseHeaders[cont+1])&&(cont<(cmeWSHTTPMaxHeaders*2)))
{
result=MHD_add_response_header(response,responseHeaders[cont],responseHeaders[cont+1]);
cont+=2;
}
}
exitcode=MHD_queue_response (connection, responseCode, response);
}
con_info->threadStatus=2; //Now the POST handling routing thread can free memory and finish.
result=cmeWebServiceLogConnection (connection,con_info,connectionStartTime,method,url,requestDataSize,responseDataSize,
(const char **)headerElements,(const char **)responseHeaders,(const char **)argumentElements,
(const char **)urlElements,numUrlElements);
cmeWebServiceAnswerConnectionFree(); //Free stuff
return (exitcode);
}
int cmeWebServiceParseURL(const char *url, char ***urlElements, int *numUrlElements)
{
int cont=0;
char *urlCopy=NULL;
char *token=NULL;
*numUrlElements=0;
*urlElements=(char **)malloc(sizeof(char *)*cmeIDDURIMaxDepth);
cmeStrConstrAppend(&urlCopy,"%s",url); //Because strtok() modifies parsed string.
token=strtok(urlCopy,"/?");
while ((cont<cmeIDDURIMaxDepth)&&(token))
{
(*numUrlElements)++;
(*urlElements)[cont]=NULL;
cmeStrConstrAppend(&((*urlElements)[cont]),"%s",token);
token=strtok(NULL,"/?");
#ifdef DEBUG
fprintf(stdout,"CaumeDSE Debug: cmeWebServiceParseURL(), element at level %d: '%s'.\n",
*numUrlElements,(*urlElements)[cont]);
#endif
cont++;
}
cmeFree(urlCopy);
return (0);
}
int cmeWebServiceParseKeys(void *cls, enum MHD_ValueKind kind, const char *key, const char *value)
{
int cont=0;
if (kind==MHD_GET_ARGUMENT_KIND)
{
//Jump to last free argumentElements space
while ((((char **)cls)[cont])&&(cont<cmeWSURIMaxArguments)) //We iterate each time for thread safety. No static vars. then.
{
cont+=2;
}
if (cont<cmeWSURIMaxArguments)
{
cmeStrConstrAppend(&(((char **)cls)[cont]),"%s",key);
cmeStrConstrAppend(&(((char **)cls)[cont+1]),"%s",value);
//Note that caller must free each cls[cont]!
}
#ifdef DEBUG
fprintf(stdout,"CaumeDSE Debug: cmeWebServiceParseKeys(), ARGUMENT:, key:%s, value:%s\n", key, value);
#endif
}
//MHD_RESPONSE_HEADER_KIND DEPRECATED in recent versions of libmicrohttpd:
/* else if (kind==MHD_RESPONSE_HEADER_KIND)
{
//Jump to last free responseElements space
while ((((char **)cls)[cont])&&(cont<cmeWSHTTPMaxResponseHeaders)) //We iterate each time for thread safety. No static vars. then.
{
cont+=2;
}
if (cont<cmeWSHTTPMaxResponseHeaders)
{
cmeStrConstrAppend(&(((char **)cls)[cont]),"%s",key);
cmeStrConstrAppend(&(((char **)cls)[cont+1]),"%s",value);
//Note that caller must free each cls[cont]!
}
#ifdef DEBUG
fprintf(stdout,"CaumeDSE Debug: cmeWebServiceParseKeys(), RESPONSE HEADER:, key:%s, value:%s\n", key, value);
#endif
}
*/
else if (kind==MHD_HEADER_KIND)
{
//Jump to last free headerElements space
while ((((char **)cls)[cont])&&(cont<cmeWSHTTPMaxHeaders)) //We iterate each time for thread safety. No static vars. then.
{
cont+=2;
}
if (cont<cmeWSHTTPMaxHeaders)
{
cmeStrConstrAppend(&(((char **)cls)[cont]),"%s",key);
cmeStrConstrAppend(&(((char **)cls)[cont+1]),"%s",value);
//Note that caller must free each cls[cont]!
}
#ifdef DEBUG
fprintf(stdout,"CaumeDSE Debug: cmeWebServiceParseKeys(), HEADER:, key:%s, value:%s\n", key, value);
#endif
}
return MHD_YES;
}
int cmeWebServiceProcessRequest (char **responseText, char **responseFilePath, char ***responseHeaders, int *responseCode,
const char *url, const char **urlElements, int numUrlElements,
const char **headerElements,const char **argumentElements, const char *method,
struct MHD_Connection *connection)
{ //IDD 1.0.21
int cont,result;
int authentication=0;
static int powerStatus=1; //TODO (OHR#5#) Set engine default to 'off'?
char *userId=NULL;
char *orgId=NULL;
char *orgKey=NULL;
char *newOrgKey=NULL;
char *storagePath=NULL;
const union MHD_ConnectionInfo *connectionInfo=NULL;
#define cmeWebServiceProcessRequestFree() \
do { \
cmeFree(userId); \
cmeFree(orgId); \
cmeFree(storagePath); \
if(orgKey) \
{ \
memset(orgKey,0,strlen(orgKey)); \
cmeFree(orgKey); \
} \
if(newOrgKey) \
{ \
memset(newOrgKey,0,strlen(newOrgKey)); \
cmeFree(newOrgKey); \
} \
cmeResultMemTableClean(); \
} while (0); //Local free() macro.
//TODO (OHR#2#): Sanitizing function for all inputs (filter: ",',;,=,`)
if ((numUrlElements==1)&&(strcmp("favicon.ico",urlElements[0])==0)&&(strcmp("GET",method)==0)) //Process favicon.ico; powerStatus='on' not required.
{
#ifdef DEBUG
fprintf(stdout,"CaumeDSE Debug: cmeWebServiceProcessRequest(), client requests "
"favicon.ico.\n");
#endif
cmeWebServiceProcessRequestFree();
cmeStrConstrAppend (responseFilePath,"%sfavicon.ico",cmeDefaultFilePath);
cmeStrConstrAppend(&((*responseHeaders)[0]),"Content-Type");
cmeStrConstrAppend(&((*responseHeaders)[1]),"image/x-icon");
*responseCode=200; //Response: OK
cmeWebServiceProcessRequestFree();
return (0);
}
if (numUrlElements==0) //Error; depth does not match a valid value
{
cmeStrConstrAppend(responseText,"<b>404 ERROR Resource not found.</b><br><br>"
"Resource depth %d. method: '%s', url: '%s'",numUrlElements,method,url);
#ifdef ERROR_LOG
fprintf(stderr,"CaumeDSE Error: cmeWebServiceProcessRequest(). Error, Resource not found."
"Resource depth %d. method: '%s', url: '%s'\n",numUrlElements,method,url);
#endif
cmeWebServiceProcessRequestFree();
*responseCode=404; //Response: Error 404 (resource not found).
return(1);
}
//Get user credentials (parameters userId, orgId, orgKey and newOrgKey).
cont=0;
while ((cont<cmeWSURIMaxArguments)&&(argumentElements[cont]))
{
if (!strcmp(argumentElements[cont],"userId")) //Copy userId.
{
cmeStrConstrAppend(&userId,"%s",argumentElements[cont+1]);
}
else if (!strcmp(argumentElements[cont],"orgId")) //Copy orgId.
{
cmeStrConstrAppend(&orgId,"%s",argumentElements[cont+1]);
}
else if (!strcmp(argumentElements[cont],"orgKey")) //Copy orgKey.
{
cmeStrConstrAppend(&orgKey,"%s",argumentElements[cont+1]);
}
else if (!strcmp(argumentElements[cont],"newOrgKey")) //Copy newOrgKey (this is an optional parameter for POST requests).
{
cmeStrConstrAppend(&newOrgKey,"%s",argumentElements[cont+1]);
}
cont+=2;
}
if ((!userId)||(!orgId)||(!orgKey)) //Error, some essential parameters for the next functions are not included!
{
result=1;
cmeStrConstrAppend(responseText,"<b>401 ERROR Unauthorized. Parameter userId|orgId|orgKey is missing.</b><br>"
"Internal server error number '%d'."
"METHOD: '%s' URL: '%s'."
"Latest IDD version: <code>%s</code>",result,method,url,
cmeInternalDBDefinitionsVersion);
#ifdef DEBUG
fprintf(stdout,"CaumeDSE Debug: cmeWebServiceProcessRequest(), Warning, unauthorized '%d'."
" Method: '%s', URL: '%s' userId, orgId and/or orgKey parameter(s) missing!\n",result,method,url);
#endif
cmeWebServiceProcessRequestFree();
*responseCode=401;
return(2);
}
else //Authenticate and authorize (roles) for requesting user.
{
//AUTHENTICATION PHASE:
if (cmeUseOAUTHAuthentication) //Try OAUTH client authentication.
{
result=1; // TODO (OHR#2#): Add OAUTH authentication mechanism. The engine will still handle the same org. key (e.g. for authenticating owners with OAUTH), but for authorized users different from the owner another layer (e.g. an engine manager) should create another organization with different key and a standard name (e.g. <orgId>_OAUTH), put the authorized user and their permissions within this "temporal organization", and add any resources authorized by the user to this organization. When the OAUTH permissions timeout, the added layer should delete this organization and all associated resources (the engine doesn't store keys, so the added layer must maintain its own indexes).
if (!result) //OAUTH Authentication Successful.
{
authentication+=1;
}
}
connectionInfo=MHD_get_connection_info(connection, MHD_CONNECTION_INFO_PROTOCOL); //Get gnutls connection protocol information.
if ((cmeUseTLSAuthentication)&&(connectionInfo)) //Try TLS client certificate authentication.
{ //NOTE: CA (ca.pem) signs org certificate; org certificate signs user certificate. Client certificate chain must include both org and user certificates!
#ifdef DEBUG
fprintf(stdout,"CaumeDSE Debug: cmeWebServiceProcessRequest(), will try TLS authentication; GnuTLS reports protocol version: %d.\n",
connectionInfo->protocol);
#endif
result=cmeWebServiceClientCertAuth(userId, orgId, connection);
if (!result) //TLS Authentication Successful.
{
authentication+=2;
}
}
else
{
if ((cmeBypassTLSAuthenticationInHTTP)&&(cmeUseTLSAuthentication))
{
#ifdef DEBUG
fprintf(stdout,"CaumeDSE Debug: cmeWebServiceProcessRequest(), WARNING: bypassing TLS authentication in an HTTP session.\n");
#endif
authentication+=4; //If TLS authentication is required but session is not HTTPS/TLS, assume authentication is correct. (For testing purposes only, e.g. HTTP in DEBUG mode)
}
}
if (!authentication) //Error, all authentication methods failed!
{
cmeStrConstrAppend(responseText,"<b>401 User authentication failed!</b><br>"
"METHOD: '%s' URL: '%s'."
" Latest IDD version: <code>%s</code>",method,url,
cmeInternalDBDefinitionsVersion);
#ifdef DEBUG
fprintf(stdout,"CaumeDSE Debug: cmeWebServiceProcessRequest(), User authentication failed."
" Method: '%s', URL: '%s'.\n",method,url);
#endif
cmeWebServiceProcessRequestFree();
*responseCode=401;
return(3);
}
//AUTHORIZATION PHASE:
result=cmeWebServiceConfirmUserId(userId,orgKey);
if (result==1) //System Error, can't open ResourceDB to check userId.
{
cmeStrConstrAppend(responseText,"<b>500 ERROR Internal server error.</b><br>"
"Internal server error number '%d'."
"METHOD: '%s' URL: '%s'."
"Latest IDD version: <code>%s</code>",result,method,url,
cmeInternalDBDefinitionsVersion);
#ifdef ERROR_LOG
fprintf(stderr,"CaumeDSE Error: cmeWebServiceProcessRequest(), Error, internal server error '%d'."
" Method: '%s', URL: '%s', can't open ResourceDB to check userId: %s !\n",result,method,url,userId);
#endif
cmeWebServiceProcessRequestFree();
*responseCode=500;
return(4);
}
else if (result==2) //Error, invalid userId.
{
cmeStrConstrAppend(responseText,"<b>403 ERROR request forbidden for the specified userResourceId</b><br>"
"Internal server error number '%d'."
"METHOD: '%s' URL: '%s'."
"Latest IDD version: <code>%s</code>",result,method,url,
cmeInternalDBDefinitionsVersion);
#ifdef DEBUG
fprintf(stdout,"CaumeDSE Debug: cmeWebServiceProcessRequest(), Warning, '%d'."
" Method: '%s', URL: '%s', can't find userResourceId for userId %s!\n",result,method,url,userId);
#endif
cmeWebServiceProcessRequestFree();
*responseCode=403;
return(5);
}
result=cmeWebServiceConfirmOrgId(orgId,orgKey);
if (result==1) //System Error, can't open ResourceDB to check orgId.
{
cmeStrConstrAppend(responseText,"<b>500 ERROR Internal server error.</b><br>"
"Internal server error number '%d'."
"METHOD: '%s' URL: '%s'."
"Latest IDD version: <code>%s</code>",result,method,url,
cmeInternalDBDefinitionsVersion);
#ifdef ERROR_LOG
fprintf(stderr,"CaumeDSE Error: cmeWebServiceProcessRequest(), Error, internal server error '%d'."
" Method: '%s', URL: '%s', can't open ResourceDB to check orgId: %s !\n",result,method,url,orgId);
#endif
cmeWebServiceProcessRequestFree();
*responseCode=500;
return(6);
}
else if (result==2) //Error, invalid orgId.
{
cmeStrConstrAppend(responseText,"<b>403 ERROR request forbidden for the specified orgResourceId.</b><br>"
"Internal server error number '%d'."
"METHOD: '%s' URL: '%s'."
"Latest IDD version: <code>%s</code>",result,method,url,
cmeInternalDBDefinitionsVersion);
#ifdef DEBUG
fprintf(stdout,"CaumeDSE Debug: cmeWebServiceProcessRequest(), Warning, '%d'."
" Method: '%s', URL: '%s', can't find userResourceId for orgId %s!\n",result,method,url,orgId);
#endif
cmeWebServiceProcessRequestFree();
*responseCode=403;
return(7);
}
result=cmeWebServiceCheckPermissions (method, url, urlElements, numUrlElements,
responseText, responseCode, userId, orgId, orgKey);
if (result) //System Error or authorization error. cmeWebServiceCheckPermissions() already filled in the response text and code.
{
#ifdef DEBUG
fprintf(stdout,"CaumeDSE Debug: cmeWebServiceProcessRequest(), Warning, '%s'."
" Method: '%s', URL: '%s' invalid credentials!\n",*responseText,method,url);
#endif
cmeWebServiceProcessRequestFree();
return(8);
}
}
//Check URL resource parameters:
if ((numUrlElements>2)&&(strcmp(urlElements[0],"organizations")==0)) //We have an organization resource in the URL. Check that it is valid.
{
if (newOrgKey) //check using newOrgKey
{
result=cmeWebServiceConfirmOrgId(urlElements[1],newOrgKey);
}
else //check using orgKey
{
result=cmeWebServiceConfirmOrgId(urlElements[1],orgKey);
}
if (result==1) //System Error, can't open ResourceDB to check orgId.
{
cmeStrConstrAppend(responseText,"<b>500 ERROR Internal server error.</b><br>"
"Internal server error number '%d'."
"METHOD: '%s' URL: '%s'."
"Latest IDD version: <code>%s</code>",result,method,url,
cmeInternalDBDefinitionsVersion);
#ifdef ERROR_LOG
fprintf(stderr,"CaumeDSE Error: cmeWebServiceProcessRequest(), Error, internal server error '%d'."
" Method: '%s', URL: '%s', can't open ResourceDB to check orgResourceId: %s !\n",result,method,url,urlElements[1]);
#endif
cmeWebServiceProcessRequestFree();
*responseCode=500;
return(9);
}
else if (result==2) //Error, invalid organization in URL.
{
cmeStrConstrAppend(responseText,"<b>404 ERROR The organization resource specified in the URL was not found. Check parameters.</b><br>"
"Internal server error number '%d'."
"METHOD: '%s' URL: '%s'."
"Latest IDD version: <code>%s</code>",result,method,url,
cmeInternalDBDefinitionsVersion);
#ifdef DEBUG
fprintf(stdout,"CaumeDSE Error: cmeWebServiceProcessRequest(), Warning, '%d'."
" Method: '%s', URL: '%s', can't find orgResourceId: %s!\n",result,method,url,urlElements[1]);
#endif
cmeWebServiceProcessRequestFree();
*responseCode=404;
return(10);
}
}
if ((numUrlElements>4)&&(strcmp(urlElements[2],"storage")==0))// We have a storage resource in the URL. Check it is valid and get the corresponding storage path.
{
//Get storage path:
if (newOrgKey) //check using newOrgKey
{
result=cmeWebServiceGetStoragePath(&storagePath,urlElements[3],urlElements[1],newOrgKey);
}
else //check using orgKey
{
result=cmeWebServiceGetStoragePath(&storagePath,urlElements[3],urlElements[1],orgKey);
}
if (result==1) //System Error, can't open ResourceDB to check storageId and storagePath.
{
cmeStrConstrAppend(responseText,"<b>500 ERROR Internal server error.</b><br>"
"Internal server error number '%d'."
"METHOD: '%s' URL: '%s'."
"Latest IDD version: <code>%s</code>",result,method,url,
cmeInternalDBDefinitionsVersion);
#ifdef ERROR_LOG
fprintf(stderr,"CaumeDSE Error: cmeWebServiceProcessRequest(), Error, internal server error '%d'."
" Method: '%s', URL: '%s', can't find storageId: %s !\n",result,method,url,urlElements[3]);
#endif
cmeWebServiceProcessRequestFree();
*responseCode=500;
return(11);
}
else if (result==2) //Error, invalid storageId, can't get path.
{
cmeStrConstrAppend(responseText,"<b>404 ERROR The storage resource specified in the URL was not found. Check parameters.</b><br>"
"Internal server error number '%d'."
"METHOD: '%s' URL: '%s'."
"Latest IDD version: <code>%s</code>",result,method,url,
cmeInternalDBDefinitionsVersion);
#ifdef DEBUG
fprintf(stdout,"CaumeDSE Error: cmeWebServiceProcessRequest(), Warning, '%d'."
" Method: '%s', URL: '%s', can't find storageId; can't get storage path of storageId: %s !\n",result,method,url,urlElements[3]);
#endif
cmeWebServiceProcessRequestFree();
*responseCode=404;
return(12);
}
}
if ((numUrlElements>4)&&(strcmp(urlElements[2],"users")==0))// We have a users resource in the URL. Check it is valid.
{
if (newOrgKey) //check using newOrgKey
{
result=cmeWebServiceConfirmUserId(urlElements[3],newOrgKey);
}
else //check using orgKey
{
result=cmeWebServiceConfirmUserId(urlElements[3],orgKey);
}
if (result==1) //System Error, can't open ResourceDB to check userId.
{
cmeStrConstrAppend(responseText,"<b>500 ERROR Internal server error.</b><br>"
"Internal server error number '%d'."
"METHOD: '%s' URL: '%s'."
"Latest IDD version: <code>%s</code>",result,method,url,
cmeInternalDBDefinitionsVersion);
#ifdef ERROR_LOG
fprintf(stderr,"CaumeDSE Error: cmeWebServiceProcessRequest(), Error, internal server error '%d'."
" Method: '%s', URL: '%s', can't open ResourceDB to check userId: %s !\n",result,method,url,urlElements[3]);
#endif
cmeWebServiceProcessRequestFree();
*responseCode=500;
return(13);
}
else if (result==2) //Error, invalid userId.
{
cmeStrConstrAppend(responseText,"<b>404 ERROR The userId specified in the URL was not found. Check parameters.</b><br>"
"Internal server error number '%d'."
"METHOD: '%s' URL: '%s'."
"Latest IDD version: <code>%s</code>",result,method,url,
cmeInternalDBDefinitionsVersion);
#ifdef DEBUG
fprintf(stdout,"CaumeDSE Debug: cmeWebServiceProcessRequest(), Warning, '%d'."
" Method: '%s', URL: '%s', can't the userId specified in the URL: %s!\n",result,method,url,urlElements[3]);
#endif
cmeWebServiceProcessRequestFree();
*responseCode=404;
return(14);
}
}
//Process web service requests:
if ((numUrlElements==1)&&(strcmp(urlElements[0],"engineCommands")==0)) // engine command resource (ignore powerStatus)
{
#ifdef DEBUG
fprintf(stdout,"CaumeDSE Debug: cmeWebServiceProcessRequest(), client requests "
"engine command resource: '%s'. Method: '%s'. Url: '%s'.\n",urlElements[numUrlElements-1],method,url);
#endif
result=cmeWebServiceProcessEngineResource(responseText, responseCode, url, argumentElements, method, &powerStatus);
if (result) //Error, return error code + 100.
{
return(result+100);
}
else
{
return(0);
}
}
//Check engine power status:
else if (!powerStatus) //powerStatus is off
{
cmeStrConstrAppend(responseText,"<b>503 ERROR Engine is off.</b><br><br>Turn engine on "
"using administrator credentials with PUT request: <code>https://{engine}"
"?userId=<admin_userid>&orgId=<admin_orgid>&"
"orgKey=<admin_orgpwd>&setEnginePower=on </code>");
#ifdef ERROR_LOG
fprintf(stderr,"CaumeDSE Error: cmeWebServiceProcessRequest(), Error, Web Services are off; "
"no access to admin. databases for method: %s, url: %s!\n",method,url);
#endif
cmeWebServiceProcessRequestFree();
*responseCode=503; //Response: Error 503 service unavailable.
return(15);
}
//Process trasactions (logs) requests:
else if ((numUrlElements==1)&&(strcmp(urlElements[0],"transactions")==0)) //transaction class resource.
{
#ifdef DEBUG
fprintf(stdout,"CaumeDSE Debug: cmeWebServiceProcessRequest(), client requests "
"engine command resource: '%s'. Method: '%s'. Url: '%s'.\n",urlElements[numUrlElements-1],method,url);
#endif
result=cmeWebServiceProcessTransactionClass(responseText,responseHeaders,responseCode,
url,argumentElements,method);
if (result) //Error, return error code + 100.
{
return(result+100);
}
else
{
return(0);
}
}
//Good so far, now process the URL according to the resource depth level:
else if ((numUrlElements>=1)&&(numUrlElements<=cmeIDDURIMaxDepth)&&(powerStatus)) //organization resource tree.
{ //Check URL depth level an process response accordingly (CME Web Services Definition)
if ((numUrlElements==1)&&(strcmp(urlElements[0],"organizations")==0)) // organization class resource
{
#ifdef DEBUG
fprintf(stdout,"CaumeDSE Debug: cmeWebServiceProcessRequest(), client requests "
"organization class resource: '%s'. Method: '%s'. Url: '%s'.\n",urlElements[numUrlElements-1],method,url);
#endif
result=cmeWebServiceProcessOrgClass (responseText, responseFilePath, responseHeaders, responseCode,
url, argumentElements, method);
if (result) //Error, return error code + 100.
{
return(result+100);
}
else
{
return(0);
}
}
else if ((numUrlElements==2)&&(strcmp(urlElements[0],"organizations")==0))// organization resource
{
#ifdef DEBUG
fprintf(stdout,"CaumeDSE Debug: cmeWebServiceProcessRequest(), client requests "
"organization resource: '%s'. Method: '%s'. Url: '%s'.\n",urlElements[numUrlElements-1],method,url);
#endif
result=cmeWebServiceProcessOrgResource(responseText, responseHeaders, responseCode,
url, urlElements, argumentElements, method);
if (result) //Error, return error code + 100.
{
return(result+100);
}
else
{
return(0);
}
}
else if ((numUrlElements==3)&&(strcmp(urlElements[2],"users")==0))// user class resource
{
#ifdef DEBUG
fprintf(stdout,"CaumeDSE Debug: cmeWebServiceProcessRequest(), client requests "
"user class resource: '%s'. Method: '%s'. Url: '%s'.\n",urlElements[numUrlElements-1],method,url);
#endif
result=cmeWebServiceProcessUserClass(responseText, responseHeaders, responseCode,
url, urlElements, argumentElements, method);
if (result) //Error, return error code + 100.
{
return(result+100);
}
else
{
return(0);
}
}
else if ((numUrlElements==4)&&(strcmp(urlElements[2],"users")==0))// user resource
{
#ifdef DEBUG
fprintf(stdout,"CaumeDSE Debug: cmeWebServiceProcessRequest(), client requests "
"user resource: '%s'. Method: '%s'. Url: '%s'.\n",urlElements[numUrlElements-1],method,url);
#endif
result=cmeWebServiceProcessUserResource(responseText, responseFilePath, responseHeaders, responseCode,
url, urlElements, argumentElements, method);
if (result) //Error, return error code + 100.
{
return(result+100);
}
else
{
return(0);
}
}
else if ((numUrlElements==5)&&(strcmp(urlElements[4],"roleTables")==0))// roleTable class resource
{
#ifdef DEBUG
fprintf(stdout,"CaumeDSE Debug: cmeWebServiceProcessRequest(), client requests "
"roleTable class resource: '%s'. Method: '%s'. Url: '%s'.\n",urlElements[numUrlElements-1],method,url);
#endif
cmeStrConstrAppend(responseText,"<b>403 ERROR No methods are currently available for this resource type.</b><br><br>"
"Resource: '%s'. method: '%s', url: '%s'",urlElements[numUrlElements-1],method,url);
#ifdef ERROR_LOG
fprintf(stderr,"CaumeDSE Error: cmeWebServiceProcessRequest(). Error, no methods are currently available for this resource type."
"Unknown resource: '%s'. Method: '%s', url: '%s'\n",urlElements[numUrlElements-1],method,url);
#endif
cmeWebServiceProcessRequestFree();
*responseCode=403; //Response: Error 404 (resource not found).
return (15);
}
else if ((numUrlElements==6)&&(strcmp(urlElements[4],"roleTables")==0))// roleTable resource
{
#ifdef DEBUG
fprintf(stdout,"CaumeDSE Debug: cmeWebServiceProcessRequest(), client requests "
"roleTable resource: '%s'. Method: '%s'. Url: '%s'.\n",urlElements[numUrlElements-1],method,url);
#endif
result=cmeWebServiceProcessRoleTableResource(responseText, responseFilePath, responseHeaders, responseCode,
url, urlElements, argumentElements, method);
if (result) //Error, return error code + 100.
{
return(result+100);
}
else
{
return(0);
}
}
//TODO (OHR#2#) process storage documentTypes and documents resource tree requests.
else if ((numUrlElements==3)&&(strcmp(urlElements[2],"storage")==0)) //storage class resource
{
#ifdef DEBUG
fprintf(stdout,"CaumeDSE Debug: cmeWebServiceProcessRequest(), client requests "
"storage class resource: '%s'. Method: '%s'. Url: '%s'.\n",urlElements[numUrlElements-1],method,url);
#endif
result=cmeWebServiceProcessStorageClass (responseText, responseHeaders, responseCode,
url, urlElements, argumentElements, method);
if (result) //Error, return error code + 100.
{
return(result+100);
}
else
{
return(0);
}
}
else if ((numUrlElements==4)&&(strcmp(urlElements[2],"storage")==0))// storage resource
{
#ifdef DEBUG
fprintf(stdout,"CaumeDSE Debug: cmeWebServiceProcessRequest(), client requests "
"storage resource: '%s'. Method: '%s'. Url: '%s'.\n",urlElements[numUrlElements-1],method,url);
#endif
result=cmeWebServiceProcessStorageResource(responseText, responseFilePath, responseHeaders, responseCode,
url, urlElements, argumentElements, method);
if (result) //Error, return error code + 100.
{
return(result+100);
}
else
{
return(0);
}
}
else if ((numUrlElements==5)&&(strcmp(urlElements[4],"documentTypes")==0))// documentTypes class resource
{
#ifdef DEBUG
fprintf(stdout,"CaumeDSE Debug: cmeWebServiceProcessRequest(), client requests "
"documentType class resource: '%s'. Method: '%s'. Url: '%s'.\n",urlElements[numUrlElements-1],method,url);
#endif
cmeStrConstrAppend(responseText,"<b>403 ERROR No methods are currently available for this resource type.</b><br><br>"
"Resource: '%s'. method: '%s', url: '%s'",urlElements[numUrlElements-1],method,url);
#ifdef ERROR_LOG
fprintf(stderr,"CaumeDSE Error: cmeWebServiceProcessRequest(). Error, no methods are currently available for this resource type."
"Unknown resource: '%s'. Method: '%s', url: '%s'\n",urlElements[numUrlElements-1],method,url);
#endif
cmeWebServiceProcessRequestFree();
*responseCode=403; //Response: Error 404 (resource not found).
return (16);
}
else if ((numUrlElements==6)&&(strcmp(urlElements[4],"documentTypes")==0)) //documentType resource
{
#ifdef DEBUG
fprintf(stdout,"CaumeDSE Debug: cmeWebServiceProcessRequest(), client requests "
"documentType resource: '%s'. Method: '%s'. Url: '%s'.\n",urlElements[numUrlElements-1],method,url);
#endif
result=cmeWebServiceProcessDocumentTypeResource(responseText, responseFilePath, responseCode,
url, urlElements, argumentElements, method);
if (result) //Error, return error code + 100.
{
return(result+100);
}
else
{