/*
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% %
% %
% %
% S e t M a g i c k S e c u r i t y P o l i c y %
% %
% %
% %
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%
% SetMagickSecurityPolicy() sets the ImageMagick security policy. It returns
% MagickFalse if the policy is already set or if the policy does not parse.
%
% The format of the SetMagickSecurityPolicy method is:
%
% MagickBooleanType SetMagickSecurityPolicy(const char *policy,
% ExceptionInfo *exception)
%
% A description of each parameter follows:
%
% o policy: the security policy in the XML format.
%
% o exception: return any errors or warnings in this structure.
%
*/
MagickExport MagickBooleanType SetMagickSecurityPolicy(const char *policy,
ExceptionInfo *exception)
{
PolicyInfo
*p;
MagickBooleanType
status;
assert(exception != (ExceptionInfo *) NULL);
if (policy == (const char *) NULL)
return(MagickFalse);
if (IsPolicyCacheInstantiated(exception) == MagickFalse)
return(MagickFalse);
LockSemaphoreInfo(policy_semaphore);
ResetLinkedListIterator(policy_cache);
p=(PolicyInfo *) GetNextValueInLinkedList(policy_cache);
if ((p != (PolicyInfo *) NULL) && (p->domain != UndefinedPolicyDomain))
{
UnlockSemaphoreInfo(policy_semaphore);
return(MagickFalse);
}
UnlockSemaphoreInfo(policy_semaphore);
status=LoadPolicyCache(policy_cache,policy,"[user-policy]",0,exception);
if (status == MagickFalse)
return(MagickFalse);
return(ResourceComponentGenesis());
}
/*
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% %
% %
% %
+ G e t P o l i c y I n f o %
% %
% %
% %
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%
% GetPolicyInfo() searches the policy list for the specified name and if found
% returns attributes for that policy.
%
% The format of the GetPolicyInfo method is:
%
% PolicyInfo *GetPolicyInfo(const char *name,ExceptionInfo *exception)
%
% A description of each parameter follows:
%
% o name: the policy name.
%
% o exception: return any errors or warnings in this structure.
%
*/
static PolicyInfo *GetPolicyInfo(const char *name,ExceptionInfo *exception)
{
char
policyname[MagickPathExtent];
register PolicyInfo
*p;
register char
*q;
assert(exception != (ExceptionInfo *) NULL);
if (IsPolicyCacheInstantiated(exception) == MagickFalse)
return((PolicyInfo *) NULL);
/*
Strip names of whitespace.
*/
*policyname='\0';
if (name != (const char *) NULL)
(void) CopyMagickString(policyname,name,MagickPathExtent);
for (q=policyname; *q != '\0'; q++)
{
if (isspace((int) ((unsigned char) *q)) == 0)
continue;
(void) CopyMagickString(q,q+1,MagickPathExtent);
q--;
}
/*
Search for policy tag.
*/
LockSemaphoreInfo(policy_semaphore);
ResetLinkedListIterator(policy_cache);
p=(PolicyInfo *) GetNextValueInLinkedList(policy_cache);
if ((name == (const char *) NULL) || (LocaleCompare(name,"*") == 0))
{
UnlockSemaphoreInfo(policy_semaphore);
return(p);
}
while (p != (PolicyInfo *) NULL)
{
if (LocaleCompare(policyname,p->name) == 0)
break;
p=(PolicyInfo *) GetNextValueInLinkedList(policy_cache);
}
if (p != (PolicyInfo *) NULL)
(void) InsertValueInLinkedList(policy_cache,0,
RemoveElementByValueFromLinkedList(policy_cache,p));
UnlockSemaphoreInfo(policy_semaphore);
return(p);
}
