1022 lines
34 KiB
C
1022 lines
34 KiB
C
/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% PPPP OOO L IIIII CCCC Y Y %
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% P P O O L I C Y Y %
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% PPPP O O L I C Y %
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% P O O L I C Y %
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% P OOO LLLLL IIIII CCCC Y %
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% %
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% %
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% MagickCore Policy Methods %
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% %
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% Software Design %
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% John Cristy %
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% July 1992 %
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% %
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% %
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% Copyright 1999-2013 ImageMagick Studio LLC, a non-profit organization %
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% dedicated to making software imaging solutions freely available. %
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% %
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% You may not use this file except in compliance with the License. You may %
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% obtain a copy of the License at %
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% %
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% http://www.imagemagick.org/script/license.php %
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% %
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% Unless required by applicable law or agreed to in writing, software %
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% distributed under the License is distributed on an "AS IS" BASIS, %
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% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. %
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% See the License for the specific language governing permissions and %
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% limitations under the License. %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% We use linked-lists because splay-trees do not currently support duplicate
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% key / value pairs (.e.g X11 green compliance and SVG green compliance).
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%
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*/
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/*
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Include declarations.
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*/
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#include "magick/studio.h"
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#include "magick/client.h"
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#include "magick/configure.h"
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#include "magick/exception.h"
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#include "magick/exception-private.h"
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#include "magick/memory_.h"
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#include "magick/monitor.h"
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#include "magick/monitor-private.h"
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#include "magick/option.h"
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#include "magick/policy.h"
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#include "magick/semaphore.h"
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#include "magick/string_.h"
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#include "magick/token.h"
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#include "magick/utility.h"
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#include "magick/xml-tree.h"
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/*
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Define declarations.
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*/
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#define PolicyFilename "policy.xml"
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/*
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Typedef declarations.
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*/
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struct _PolicyInfo
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{
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char
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*path;
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PolicyDomain
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domain;
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PolicyRights
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rights;
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char
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*name,
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*pattern,
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*value;
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MagickBooleanType
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exempt,
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stealth,
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debug;
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SemaphoreInfo
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*semaphore;
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size_t
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signature;
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};
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typedef struct _PolicyMapInfo
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{
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const PolicyDomain
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domain;
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const PolicyRights
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rights;
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const char
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*name,
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*pattern,
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*value;
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} PolicyMapInfo;
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/*
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Static declarations.
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*/
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static const PolicyMapInfo
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PolicyMap[] =
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{
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{ UndefinedPolicyDomain, UndefinedPolicyRights, (const char *) NULL,
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(const char *) NULL, (const char *) NULL }
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};
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static LinkedListInfo
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*policy_list = (LinkedListInfo *) NULL;
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static SemaphoreInfo
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*policy_semaphore = (SemaphoreInfo *) NULL;
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static volatile MagickBooleanType
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instantiate_policy = MagickFalse;
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/*
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Forward declarations.
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*/
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static MagickBooleanType
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InitializePolicyList(ExceptionInfo *),
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LoadPolicyLists(const char *,ExceptionInfo *);
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/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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+ G e t P o l i c y I n f o %
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% %
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% %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% GetPolicyInfo() searches the policy list for the specified name and if found
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% returns attributes for that policy.
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%
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% The format of the GetPolicyInfo method is:
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%
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% PolicyInfo *GetPolicyInfo(const char *name,ExceptionInfo *exception)
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%
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% A description of each parameter follows:
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%
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% o name: the policy name.
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%
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% o exception: return any errors or warnings in this structure.
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%
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*/
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static PolicyInfo *GetPolicyInfo(const char *name,ExceptionInfo *exception)
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{
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char
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policyname[MaxTextExtent];
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register PolicyInfo
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*p;
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register char
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*q;
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assert(exception != (ExceptionInfo *) NULL);
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if ((policy_list == (LinkedListInfo *) NULL) ||
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(instantiate_policy == MagickFalse))
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if (InitializePolicyList(exception) == MagickFalse)
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return((PolicyInfo *) NULL);
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if ((policy_list == (LinkedListInfo *) NULL) ||
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(IsLinkedListEmpty(policy_list) != MagickFalse))
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return((PolicyInfo *) NULL);
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if ((name == (const char *) NULL) || (LocaleCompare(name,"*") == 0))
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return((PolicyInfo *) GetValueFromLinkedList(policy_list,0));
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/*
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Strip names of whitespace.
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*/
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(void) CopyMagickString(policyname,name,MaxTextExtent);
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for (q=policyname; *q != '\0'; q++)
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{
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if (isspace((int) ((unsigned char) *q)) == 0)
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continue;
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(void) CopyMagickString(q,q+1,MaxTextExtent);
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q--;
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}
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/*
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Search for policy tag.
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*/
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LockSemaphoreInfo(policy_semaphore);
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ResetLinkedListIterator(policy_list);
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p=(PolicyInfo *) GetNextValueInLinkedList(policy_list);
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while (p != (PolicyInfo *) NULL)
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{
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if (LocaleCompare(policyname,p->name) == 0)
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break;
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p=(PolicyInfo *) GetNextValueInLinkedList(policy_list);
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}
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if (p != (PolicyInfo *) NULL)
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(void) InsertValueInLinkedList(policy_list,0,
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RemoveElementByValueFromLinkedList(policy_list,p));
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UnlockSemaphoreInfo(policy_semaphore);
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return(p);
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}
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/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% G e t P o l i c y I n f o L i s t %
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% %
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% %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% GetPolicyInfoList() returns any policies that match the specified pattern.
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%
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% The format of the GetPolicyInfoList function is:
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%
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% const PolicyInfo **GetPolicyInfoList(const char *pattern,
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% size_t *number_policies,ExceptionInfo *exception)
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%
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% A description of each parameter follows:
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%
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% o pattern: Specifies a pointer to a text string containing a pattern.
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%
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% o number_policies: returns the number of policies in the list.
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%
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% o exception: return any errors or warnings in this structure.
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%
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*/
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MagickExport const PolicyInfo **GetPolicyInfoList(const char *pattern,
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size_t *number_policies,ExceptionInfo *exception)
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{
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const PolicyInfo
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**policies;
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register const PolicyInfo
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*p;
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register ssize_t
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i;
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/*
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Allocate policy list.
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*/
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assert(pattern != (char *) NULL);
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(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",pattern);
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assert(number_policies != (size_t *) NULL);
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*number_policies=0;
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p=GetPolicyInfo("*",exception);
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if (p == (const PolicyInfo *) NULL)
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return((const PolicyInfo **) NULL);
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policies=(const PolicyInfo **) AcquireQuantumMemory((size_t)
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GetNumberOfElementsInLinkedList(policy_list)+1UL,sizeof(*policies));
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if (policies == (const PolicyInfo **) NULL)
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return((const PolicyInfo **) NULL);
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/*
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Generate policy list.
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*/
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LockSemaphoreInfo(policy_semaphore);
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ResetLinkedListIterator(policy_list);
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p=(const PolicyInfo *) GetNextValueInLinkedList(policy_list);
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for (i=0; p != (const PolicyInfo *) NULL; )
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{
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if ((p->stealth == MagickFalse) &&
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(GlobExpression(p->name,pattern,MagickFalse) != MagickFalse))
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policies[i++]=p;
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p=(const PolicyInfo *) GetNextValueInLinkedList(policy_list);
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}
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UnlockSemaphoreInfo(policy_semaphore);
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policies[i]=(PolicyInfo *) NULL;
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*number_policies=(size_t) i;
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return(policies);
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}
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/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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||
% %
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||
% G e t P o l i c y L i s t %
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% %
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||
% %
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||
% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% GetPolicyList() returns any policies that match the specified pattern.
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%
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% The format of the GetPolicyList function is:
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%
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% char **GetPolicyList(const char *pattern,size_t *number_policies,
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% ExceptionInfo *exception)
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%
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% A description of each parameter follows:
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%
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% o pattern: a pointer to a text string containing a pattern.
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%
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% o number_policies: returns the number of policies in the list.
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%
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% o exception: return any errors or warnings in this structure.
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%
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*/
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MagickExport char **GetPolicyList(const char *pattern,
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size_t *number_policies,ExceptionInfo *exception)
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{
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char
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**policies;
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register const PolicyInfo
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*p;
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register ssize_t
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i;
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/*
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Allocate policy list.
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*/
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assert(pattern != (char *) NULL);
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(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",pattern);
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assert(number_policies != (size_t *) NULL);
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*number_policies=0;
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p=GetPolicyInfo("*",exception);
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if (p == (const PolicyInfo *) NULL)
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return((char **) NULL);
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policies=(char **) AcquireQuantumMemory((size_t)
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GetNumberOfElementsInLinkedList(policy_list)+1UL,sizeof(*policies));
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if (policies == (char **) NULL)
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return((char **) NULL);
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/*
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Generate policy list.
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*/
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LockSemaphoreInfo(policy_semaphore);
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ResetLinkedListIterator(policy_list);
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p=(const PolicyInfo *) GetNextValueInLinkedList(policy_list);
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for (i=0; p != (const PolicyInfo *) NULL; )
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{
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if ((p->stealth == MagickFalse) &&
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(GlobExpression(p->name,pattern,MagickFalse) != MagickFalse))
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policies[i++]=ConstantString(p->name);
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p=(const PolicyInfo *) GetNextValueInLinkedList(policy_list);
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}
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UnlockSemaphoreInfo(policy_semaphore);
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policies[i]=(char *) NULL;
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*number_policies=(size_t) i;
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return(policies);
|
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}
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||
|
||
/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
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% %
|
||
% %
|
||
% %
|
||
% G e t P o l i c y V a l u e %
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% %
|
||
% %
|
||
% %
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||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% GetPolicyValue() returns the value associated with the named policy.
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%
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% The format of the GetPolicyValue method is:
|
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%
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% char *GetPolicyValue(const char *name)
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%
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% A description of each parameter follows:
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%
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% o policy_info: The policy info.
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%
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*/
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MagickExport char *GetPolicyValue(const char *name)
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{
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const char
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*value;
|
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|
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const PolicyInfo
|
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*policy_info;
|
||
|
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ExceptionInfo
|
||
*exception;
|
||
|
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assert(name != (const char *) NULL);
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(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",name);
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exception=AcquireExceptionInfo();
|
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policy_info=GetPolicyInfo(name,exception);
|
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exception=DestroyExceptionInfo(exception);
|
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if (policy_info == (PolicyInfo *) NULL)
|
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return((char *) NULL);
|
||
value=policy_info->value;
|
||
if ((value == (const char *) NULL) || (*value == '\0'))
|
||
return((char *) NULL);
|
||
return(ConstantString(value));
|
||
}
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
+ I n i t i a l i z e P o l i c y L i s t %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% InitializePolicyList() initializes the policy list.
|
||
%
|
||
% The format of the InitializePolicyList method is:
|
||
%
|
||
% MagickBooleanType InitializePolicyList(ExceptionInfo *exception)
|
||
%
|
||
% A description of each parameter follows.
|
||
%
|
||
% o exception: return any errors or warnings in this structure.
|
||
%
|
||
*/
|
||
static MagickBooleanType InitializePolicyList(ExceptionInfo *exception)
|
||
{
|
||
if ((policy_list == (LinkedListInfo *) NULL) &&
|
||
(instantiate_policy == MagickFalse))
|
||
{
|
||
if (policy_semaphore == (SemaphoreInfo *) NULL)
|
||
AcquireSemaphoreInfo(&policy_semaphore);
|
||
LockSemaphoreInfo(policy_semaphore);
|
||
if ((policy_list == (LinkedListInfo *) NULL) &&
|
||
(instantiate_policy == MagickFalse))
|
||
{
|
||
(void) LoadPolicyLists(PolicyFilename,exception);
|
||
instantiate_policy=MagickTrue;
|
||
}
|
||
UnlockSemaphoreInfo(policy_semaphore);
|
||
}
|
||
return(policy_list != (LinkedListInfo *) NULL ? MagickTrue : MagickFalse);
|
||
}
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
% I s R i g h t s A u t h o r i z e d %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% IsRightsAuthorized() returns MagickTrue if the policy authorizes the
|
||
% requested rights for the specified domain.
|
||
%
|
||
% The format of the IsRightsAuthorized method is:
|
||
%
|
||
% MagickBooleanType IsRightsAuthorized(const PolicyDomain domain,
|
||
% const PolicyRights rights,const char *pattern)
|
||
%
|
||
% A description of each parameter follows:
|
||
%
|
||
% o domain: the policy domain.
|
||
%
|
||
% o rights: the policy rights.
|
||
%
|
||
% o pattern: the coder, delegate, filter, or path pattern.
|
||
%
|
||
*/
|
||
MagickExport MagickBooleanType IsRightsAuthorized(const PolicyDomain domain,
|
||
const PolicyRights rights,const char *pattern)
|
||
{
|
||
const PolicyInfo
|
||
*policy_info;
|
||
|
||
ExceptionInfo
|
||
*exception;
|
||
|
||
MagickBooleanType
|
||
authorized;
|
||
|
||
register PolicyInfo
|
||
*p;
|
||
|
||
(void) LogMagickEvent(PolicyEvent,GetMagickModule(),
|
||
"Domain: %s; rights=%s; pattern=\"%s\" ...",
|
||
CommandOptionToMnemonic(MagickPolicyDomainOptions,domain),
|
||
CommandOptionToMnemonic(MagickPolicyRightsOptions,rights),pattern);
|
||
exception=AcquireExceptionInfo();
|
||
policy_info=GetPolicyInfo("*",exception);
|
||
exception=DestroyExceptionInfo(exception);
|
||
if (policy_info == (PolicyInfo *) NULL)
|
||
return(MagickTrue);
|
||
authorized=MagickTrue;
|
||
LockSemaphoreInfo(policy_semaphore);
|
||
ResetLinkedListIterator(policy_list);
|
||
p=(PolicyInfo *) GetNextValueInLinkedList(policy_list);
|
||
while ((p != (PolicyInfo *) NULL) && (authorized != MagickFalse))
|
||
{
|
||
if ((p->domain == domain) &&
|
||
(GlobExpression(pattern,p->pattern,MagickFalse) != MagickFalse))
|
||
{
|
||
if (((rights & ReadPolicyRights) != 0) &&
|
||
((p->rights & ReadPolicyRights) == 0))
|
||
authorized=MagickFalse;
|
||
if (((rights & WritePolicyRights) != 0) &&
|
||
((p->rights & WritePolicyRights) == 0))
|
||
authorized=MagickFalse;
|
||
if (((rights & ExecutePolicyRights) != 0) &&
|
||
((p->rights & ExecutePolicyRights) == 0))
|
||
authorized=MagickFalse;
|
||
}
|
||
p=(PolicyInfo *) GetNextValueInLinkedList(policy_list);
|
||
}
|
||
UnlockSemaphoreInfo(policy_semaphore);
|
||
return(authorized);
|
||
}
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
% L i s t P o l i c y I n f o %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% ListPolicyInfo() lists policies to the specified file.
|
||
%
|
||
% The format of the ListPolicyInfo method is:
|
||
%
|
||
% MagickBooleanType ListPolicyInfo(FILE *file,ExceptionInfo *exception)
|
||
%
|
||
% A description of each parameter follows.
|
||
%
|
||
% o file: List policy names to this file handle.
|
||
%
|
||
% o exception: return any errors or warnings in this structure.
|
||
%
|
||
*/
|
||
MagickExport MagickBooleanType ListPolicyInfo(FILE *file,
|
||
ExceptionInfo *exception)
|
||
{
|
||
const char
|
||
*path,
|
||
*domain;
|
||
|
||
const PolicyInfo
|
||
**policy_info;
|
||
|
||
register ssize_t
|
||
i;
|
||
|
||
size_t
|
||
number_policies;
|
||
|
||
/*
|
||
List name and attributes of each policy in the list.
|
||
*/
|
||
if (file == (const FILE *) NULL)
|
||
file=stdout;
|
||
policy_info=GetPolicyInfoList("*",&number_policies,exception);
|
||
if (policy_info == (const PolicyInfo **) NULL)
|
||
return(MagickFalse);
|
||
path=(const char *) NULL;
|
||
for (i=0; i < (ssize_t) number_policies; i++)
|
||
{
|
||
if (policy_info[i]->stealth != MagickFalse)
|
||
continue;
|
||
if (((path == (const char *) NULL) ||
|
||
(LocaleCompare(path,policy_info[i]->path) != 0)) &&
|
||
(policy_info[i]->path != (char *) NULL))
|
||
(void) FormatLocaleFile(file,"\nPath: %s\n",policy_info[i]->path);
|
||
path=policy_info[i]->path;
|
||
domain=CommandOptionToMnemonic(MagickPolicyDomainOptions,
|
||
policy_info[i]->domain);
|
||
(void) FormatLocaleFile(file," Policy: %s\n",domain);
|
||
if ((policy_info[i]->domain == ResourcePolicyDomain) ||
|
||
(policy_info[i]->domain == SystemPolicyDomain))
|
||
{
|
||
if (policy_info[i]->name != (char *) NULL)
|
||
(void) FormatLocaleFile(file," name: %s\n",policy_info[i]->name);
|
||
if (policy_info[i]->value != (char *) NULL)
|
||
(void) FormatLocaleFile(file," value: %s\n",policy_info[i]->value);
|
||
}
|
||
else
|
||
{
|
||
(void) FormatLocaleFile(file," rights: ");
|
||
if (policy_info[i]->rights == NoPolicyRights)
|
||
(void) FormatLocaleFile(file,"None ");
|
||
if ((policy_info[i]->rights & ReadPolicyRights) != 0)
|
||
(void) FormatLocaleFile(file,"Read ");
|
||
if ((policy_info[i]->rights & WritePolicyRights) != 0)
|
||
(void) FormatLocaleFile(file,"Write ");
|
||
if ((policy_info[i]->rights & ExecutePolicyRights) != 0)
|
||
(void) FormatLocaleFile(file,"Execute ");
|
||
(void) FormatLocaleFile(file,"\n");
|
||
if (policy_info[i]->pattern != (char *) NULL)
|
||
(void) FormatLocaleFile(file," pattern: %s\n",
|
||
policy_info[i]->pattern);
|
||
}
|
||
}
|
||
policy_info=(const PolicyInfo **) RelinquishMagickMemory((void *)
|
||
policy_info);
|
||
(void) fflush(file);
|
||
return(MagickTrue);
|
||
}
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
+ L o a d P o l i c y L i s t %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% LoadPolicyList() loads the policy configuration file which provides a mapping
|
||
% between policy attributes and a policy domain.
|
||
%
|
||
% The format of the LoadPolicyList method is:
|
||
%
|
||
% MagickBooleanType LoadPolicyList(const char *xml,const char *filename,
|
||
% const size_t depth,ExceptionInfo *exception)
|
||
%
|
||
% A description of each parameter follows:
|
||
%
|
||
% o xml: The policy list in XML format.
|
||
%
|
||
% o filename: The policy list filename.
|
||
%
|
||
% o depth: depth of <include /> statements.
|
||
%
|
||
% o exception: return any errors or warnings in this structure.
|
||
%
|
||
*/
|
||
static MagickBooleanType LoadPolicyList(const char *xml,const char *filename,
|
||
const size_t depth,ExceptionInfo *exception)
|
||
{
|
||
char
|
||
keyword[MaxTextExtent],
|
||
*token;
|
||
|
||
PolicyInfo
|
||
*policy_info;
|
||
|
||
const char
|
||
*q;
|
||
|
||
MagickBooleanType
|
||
status;
|
||
|
||
/*
|
||
Load the policy map file.
|
||
*/
|
||
(void) LogMagickEvent(ConfigureEvent,GetMagickModule(),
|
||
"Loading policy file \"%s\" ...",filename);
|
||
if (xml == (char *) NULL)
|
||
return(MagickFalse);
|
||
if (policy_list == (LinkedListInfo *) NULL)
|
||
{
|
||
policy_list=NewLinkedList(0);
|
||
if (policy_list == (LinkedListInfo *) NULL)
|
||
{
|
||
ThrowFileException(exception,ResourceLimitError,
|
||
"MemoryAllocationFailed",filename);
|
||
return(MagickFalse);
|
||
}
|
||
}
|
||
status=MagickTrue;
|
||
policy_info=(PolicyInfo *) NULL;
|
||
token=AcquireString(xml);
|
||
for (q=(const char *) xml; *q != '\0'; )
|
||
{
|
||
/*
|
||
Interpret XML.
|
||
*/
|
||
GetMagickToken(q,&q,token);
|
||
if (*token == '\0')
|
||
break;
|
||
(void) CopyMagickString(keyword,token,MaxTextExtent);
|
||
if (LocaleNCompare(keyword,"<!DOCTYPE",9) == 0)
|
||
{
|
||
/*
|
||
Docdomain element.
|
||
*/
|
||
while ((LocaleNCompare(q,"]>",2) != 0) && (*q != '\0'))
|
||
GetMagickToken(q,&q,token);
|
||
continue;
|
||
}
|
||
if (LocaleNCompare(keyword,"<!--",4) == 0)
|
||
{
|
||
/*
|
||
Comment element.
|
||
*/
|
||
while ((LocaleNCompare(q,"->",2) != 0) && (*q != '\0'))
|
||
GetMagickToken(q,&q,token);
|
||
continue;
|
||
}
|
||
if (LocaleCompare(keyword,"<include") == 0)
|
||
{
|
||
/*
|
||
Include element.
|
||
*/
|
||
while (((*token != '/') && (*(token+1) != '>')) && (*q != '\0'))
|
||
{
|
||
(void) CopyMagickString(keyword,token,MaxTextExtent);
|
||
GetMagickToken(q,&q,token);
|
||
if (*token != '=')
|
||
continue;
|
||
GetMagickToken(q,&q,token);
|
||
if (LocaleCompare(keyword,"file") == 0)
|
||
{
|
||
if (depth > 200)
|
||
(void) ThrowMagickException(exception,GetMagickModule(),
|
||
ConfigureError,"IncludeElementNestedTooDeeply","`%s'",token);
|
||
else
|
||
{
|
||
char
|
||
path[MaxTextExtent],
|
||
*xml;
|
||
|
||
GetPathComponent(filename,HeadPath,path);
|
||
if (*path != '\0')
|
||
(void) ConcatenateMagickString(path,DirectorySeparator,
|
||
MaxTextExtent);
|
||
if (*token == *DirectorySeparator)
|
||
(void) CopyMagickString(path,token,MaxTextExtent);
|
||
else
|
||
(void) ConcatenateMagickString(path,token,MaxTextExtent);
|
||
xml=FileToString(path,~0,exception);
|
||
if (xml != (char *) NULL)
|
||
{
|
||
status=LoadPolicyList(xml,path,depth+1,exception);
|
||
xml=(char *) RelinquishMagickMemory(xml);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
continue;
|
||
}
|
||
if (LocaleCompare(keyword,"<policy") == 0)
|
||
{
|
||
/*
|
||
Policy element.
|
||
*/
|
||
policy_info=(PolicyInfo *) AcquireMagickMemory(sizeof(*policy_info));
|
||
if (policy_info == (PolicyInfo *) NULL)
|
||
ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed");
|
||
(void) ResetMagickMemory(policy_info,0,sizeof(*policy_info));
|
||
policy_info->path=ConstantString(filename);
|
||
policy_info->exempt=MagickFalse;
|
||
policy_info->signature=MagickSignature;
|
||
continue;
|
||
}
|
||
if (policy_info == (PolicyInfo *) NULL)
|
||
continue;
|
||
if (LocaleCompare(keyword,"/>") == 0)
|
||
{
|
||
status=AppendValueToLinkedList(policy_list,policy_info);
|
||
if (status == MagickFalse)
|
||
(void) ThrowMagickException(exception,GetMagickModule(),
|
||
ResourceLimitError,"MemoryAllocationFailed","`%s'",
|
||
policy_info->name);
|
||
policy_info=(PolicyInfo *) NULL;
|
||
}
|
||
GetMagickToken(q,(const char **) NULL,token);
|
||
if (*token != '=')
|
||
continue;
|
||
GetMagickToken(q,&q,token);
|
||
GetMagickToken(q,&q,token);
|
||
switch (*keyword)
|
||
{
|
||
case 'D':
|
||
case 'd':
|
||
{
|
||
if (LocaleCompare((char *) keyword,"domain") == 0)
|
||
{
|
||
policy_info->domain=(PolicyDomain) ParseCommandOption(
|
||
MagickPolicyDomainOptions,MagickTrue,token);
|
||
break;
|
||
}
|
||
break;
|
||
}
|
||
case 'N':
|
||
case 'n':
|
||
{
|
||
if (LocaleCompare((char *) keyword,"name") == 0)
|
||
{
|
||
policy_info->name=ConstantString(token);
|
||
break;
|
||
}
|
||
break;
|
||
}
|
||
case 'P':
|
||
case 'p':
|
||
{
|
||
if (LocaleCompare((char *) keyword,"pattern") == 0)
|
||
{
|
||
policy_info->pattern=ConstantString(token);
|
||
break;
|
||
}
|
||
break;
|
||
}
|
||
case 'R':
|
||
case 'r':
|
||
{
|
||
if (LocaleCompare((char *) keyword,"rights") == 0)
|
||
{
|
||
policy_info->rights=(PolicyRights) ParseCommandOption(
|
||
MagickPolicyRightsOptions,MagickTrue,token);
|
||
break;
|
||
}
|
||
break;
|
||
}
|
||
case 'S':
|
||
case 's':
|
||
{
|
||
if (LocaleCompare((char *) keyword,"stealth") == 0)
|
||
{
|
||
policy_info->stealth=IsMagickTrue(token);
|
||
break;
|
||
}
|
||
break;
|
||
}
|
||
case 'V':
|
||
case 'v':
|
||
{
|
||
if (LocaleCompare((char *) keyword,"value") == 0)
|
||
{
|
||
policy_info->value=ConstantString(token);
|
||
break;
|
||
}
|
||
break;
|
||
}
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
token=(char *) RelinquishMagickMemory(token);
|
||
return(status);
|
||
}
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
% L o a d P o l i c y L i s t s %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% LoadPolicyList() loads one or more policy configuration file which provides a
|
||
% mapping between policy attributes and a policy name.
|
||
%
|
||
% The format of the LoadPolicyLists method is:
|
||
%
|
||
% MagickBooleanType LoadPolicyLists(const char *filename,
|
||
% ExceptionInfo *exception)
|
||
%
|
||
% A description of each parameter follows:
|
||
%
|
||
% o filename: the font file name.
|
||
%
|
||
% o exception: return any errors or warnings in this structure.
|
||
%
|
||
*/
|
||
static MagickBooleanType LoadPolicyLists(const char *filename,
|
||
ExceptionInfo *exception)
|
||
{
|
||
const StringInfo
|
||
*option;
|
||
|
||
LinkedListInfo
|
||
*options;
|
||
|
||
MagickStatusType
|
||
status;
|
||
|
||
register ssize_t
|
||
i;
|
||
|
||
/*
|
||
Load built-in policy map.
|
||
*/
|
||
status=MagickFalse;
|
||
if (policy_list == (LinkedListInfo *) NULL)
|
||
{
|
||
policy_list=NewLinkedList(0);
|
||
if (policy_list == (LinkedListInfo *) NULL)
|
||
{
|
||
ThrowFileException(exception,ResourceLimitError,
|
||
"MemoryAllocationFailed",filename);
|
||
return(MagickFalse);
|
||
}
|
||
}
|
||
for (i=0; i < (ssize_t) (sizeof(PolicyMap)/sizeof(*PolicyMap)); i++)
|
||
{
|
||
PolicyInfo
|
||
*policy_info;
|
||
|
||
register const PolicyMapInfo
|
||
*p;
|
||
|
||
p=PolicyMap+i;
|
||
policy_info=(PolicyInfo *) AcquireMagickMemory(sizeof(*policy_info));
|
||
if (policy_info == (PolicyInfo *) NULL)
|
||
{
|
||
(void) ThrowMagickException(exception,GetMagickModule(),
|
||
ResourceLimitError,"MemoryAllocationFailed","`%s'",policy_info->name);
|
||
continue;
|
||
}
|
||
(void) ResetMagickMemory(policy_info,0,sizeof(*policy_info));
|
||
policy_info->path=(char *) "[built-in]";
|
||
policy_info->domain=p->domain;
|
||
policy_info->rights=p->rights;
|
||
policy_info->name=(char *) p->name;
|
||
policy_info->pattern=(char *) p->pattern;
|
||
policy_info->value=(char *) p->value;
|
||
policy_info->exempt=MagickTrue;
|
||
policy_info->signature=MagickSignature;
|
||
status=AppendValueToLinkedList(policy_list,policy_info);
|
||
if (status == MagickFalse)
|
||
(void) ThrowMagickException(exception,GetMagickModule(),
|
||
ResourceLimitError,"MemoryAllocationFailed","`%s'",policy_info->name);
|
||
}
|
||
/*
|
||
Load external policy map.
|
||
*/
|
||
options=GetConfigureOptions(filename,exception);
|
||
option=(const StringInfo *) GetNextValueInLinkedList(options);
|
||
while (option != (const StringInfo *) NULL)
|
||
{
|
||
status|=LoadPolicyList((const char *) GetStringInfoDatum(option),
|
||
GetStringInfoPath(option),0,exception);
|
||
option=(const StringInfo *) GetNextValueInLinkedList(options);
|
||
}
|
||
options=DestroyConfigureOptions(options);
|
||
return(status != 0 ? MagickTrue : MagickFalse);
|
||
}
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
+ P o l i c y C o m p o n e n t G e n e s i s %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% PolicyComponentGenesis() instantiates the policy component.
|
||
%
|
||
% The format of the PolicyComponentGenesis method is:
|
||
%
|
||
% MagickBooleanType PolicyComponentGenesis(void)
|
||
%
|
||
*/
|
||
MagickExport MagickBooleanType PolicyComponentGenesis(void)
|
||
{
|
||
AcquireSemaphoreInfo(&policy_semaphore);
|
||
return(MagickTrue);
|
||
}
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
+ P o l i c y C o m p o n e n t T e r m i n u s %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% PolicyComponentTerminus() destroys the policy component.
|
||
%
|
||
% The format of the PolicyComponentTerminus method is:
|
||
%
|
||
% PolicyComponentTerminus(void)
|
||
%
|
||
*/
|
||
|
||
static void *DestroyPolicyElement(void *policy_info)
|
||
{
|
||
register PolicyInfo
|
||
*p;
|
||
|
||
p=(PolicyInfo *) policy_info;
|
||
if (p->exempt == MagickFalse)
|
||
{
|
||
if (p->value != (char *) NULL)
|
||
p->value=DestroyString(p->value);
|
||
if (p->pattern != (char *) NULL)
|
||
p->pattern=DestroyString(p->pattern);
|
||
if (p->name != (char *) NULL)
|
||
p->name=DestroyString(p->name);
|
||
if (p->path != (char *) NULL)
|
||
p->path=DestroyString(p->path);
|
||
}
|
||
p=(PolicyInfo *) RelinquishMagickMemory(p);
|
||
return((void *) NULL);
|
||
}
|
||
|
||
MagickExport void PolicyComponentTerminus(void)
|
||
{
|
||
if (policy_semaphore == (SemaphoreInfo *) NULL)
|
||
AcquireSemaphoreInfo(&policy_semaphore);
|
||
LockSemaphoreInfo(policy_semaphore);
|
||
if (policy_list != (LinkedListInfo *) NULL)
|
||
policy_list=DestroyLinkedList(policy_list,DestroyPolicyElement);
|
||
instantiate_policy=MagickFalse;
|
||
UnlockSemaphoreInfo(policy_semaphore);
|
||
DestroySemaphoreInfo(&policy_semaphore);
|
||
}
|