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swad-core/swad_privacy.c

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// swad_privacy.c: users' photo and public profile visibility
/*
SWAD (Shared Workspace At a Distance),
is a web platform developed at the University of Granada (Spain),
and used to support university teaching.
This file is part of SWAD core.
Copyright (C) 1999-2019 Antonio Cañas Vargas
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
This program 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 Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/*****************************************************************************/
/********************************* Headers ***********************************/
/*****************************************************************************/
#include <string.h>
#include "swad_action.h"
#include "swad_box.h"
#include "swad_form.h"
#include "swad_global.h"
#include "swad_HTML.h"
#include "swad_parameter.h"
#include "swad_privacy.h"
#include "swad_theme.h"
/*****************************************************************************/
/************** External global variables from others modules ****************/
/*****************************************************************************/
extern struct Globals Gbl;
/*****************************************************************************/
/****************************** Public constants *****************************/
/*****************************************************************************/
/***** Visibility (who can see user's photo or public profile) *****/
const char *Pri_VisibilityDB[Pri_NUM_OPTIONS_PRIVACY] =
{
[Pri_VISIBILITY_UNKNOWN] = "unknown",
[Pri_VISIBILITY_USER ] = "user",
[Pri_VISIBILITY_COURSE ] = "course",
[Pri_VISIBILITY_SYSTEM ] = "system",
[Pri_VISIBILITY_WORLD ] = "world",
};
/*****************************************************************************/
/***************************** Private constants *****************************/
/*****************************************************************************/
#define Pri_PRIVACY_ID "privacy"
/*****************************************************************************/
/***************************** Private prototypes ****************************/
/*****************************************************************************/
static void Pri_PutIconsPrivacy (void);
static void Pri_PutFormVisibility (const char *TxtLabel,
Act_Action_t Action,const char *ParamName,
Pri_Visibility_t CurrentVisibilityInDB,
unsigned MaskAllowedVisibility);
/*****************************************************************************/
/******************************* Edit my privacy *****************************/
/*****************************************************************************/
void Pri_EditMyPrivacy (void)
{
extern const char *Hlp_PROFILE_Settings_privacy;
extern const char *Txt_Please_check_your_privacy_settings;
extern const char *Txt_Privacy;
extern const char *Txt_Photo;
extern const char *Txt_Basic_public_profile;
extern const char *Txt_Extended_public_profile;
extern const char *Txt_Timeline;
/***** Start section with settings on privacy *****/
HTM_SECTION_Begin (Pri_PRIVACY_ID);
/***** If any of my settings about privacy is unknown *****/
if (Gbl.Usrs.Me.UsrDat.PhotoVisibility == Pri_VISIBILITY_UNKNOWN ||
Gbl.Usrs.Me.UsrDat.BaPrfVisibility == Pri_VISIBILITY_UNKNOWN ||
Gbl.Usrs.Me.UsrDat.ExPrfVisibility == Pri_VISIBILITY_UNKNOWN)
Ale_ShowAlert (Ale_WARNING,Txt_Please_check_your_privacy_settings);
/***** Begin box and table *****/
Box_StartBoxTable (NULL,Txt_Privacy,Pri_PutIconsPrivacy,
Hlp_PROFILE_Settings_privacy,Box_NOT_CLOSABLE,2);
/***** Edit photo visibility *****/
Pri_PutFormVisibility (Txt_Photo,
ActChgPriPho,"VisPho",
Gbl.Usrs.Me.UsrDat.PhotoVisibility,
Pri_PHOTO_ALLOWED_VIS);
/***** Edit basic public profile visibility *****/
Pri_PutFormVisibility (Txt_Basic_public_profile,
ActChgBasPriPrf,"VisBasPrf",
Gbl.Usrs.Me.UsrDat.BaPrfVisibility,
Pri_BASIC_PROFILE_ALLOWED_VIS);
/***** Edit extended public profile visibility *****/
Pri_PutFormVisibility (Txt_Extended_public_profile,
ActChgExtPriPrf,"VisExtPrf",
Gbl.Usrs.Me.UsrDat.ExPrfVisibility,
Pri_EXTENDED_PROFILE_ALLOWED_VIS);
/***** Edit public activity (timeline) visibility *****/
Pri_PutFormVisibility (Txt_Timeline,
ActUnk,"VisTml",
Pri_VISIBILITY_SYSTEM,
Pri_TIMELINE_ALLOWED_VIS);
/***** End table and box *****/
Box_EndBoxTable ();
/***** End section with settings on privacy *****/
HTM_SECTION_End ();
}
/*****************************************************************************/
/****************** Put contextual icons in privacy setting ******************/
/*****************************************************************************/
static void Pri_PutIconsPrivacy (void)
{
/***** Put icon to show a figure *****/
Gbl.Figures.FigureType = Fig_PRIVACY;
Fig_PutIconToShowFigure ();
}
/*****************************************************************************/
/************************** Select photo visibility **************************/
/*****************************************************************************/
static void Pri_PutFormVisibility (const char *TxtLabel,
Act_Action_t Action,const char *ParamName,
Pri_Visibility_t CurrentVisibilityInDB,
unsigned MaskAllowedVisibility)
{
extern const char *The_ClassFormInBox[The_NUM_THEMES];
extern const char *Txt_PRIVACY_OPTIONS[Pri_NUM_OPTIONS_PRIVACY];
Pri_Visibility_t Visibility;
HTM_TR_Begin (NULL);
/***** Select visibility *****/
HTM_TD_Begin ("class=\"%s RT\"",The_ClassFormInBox[Gbl.Prefs.Theme]);
HTM_TxtF ("%s:",TxtLabel);
HTM_TD_End ();
/***** Form with list of options *****/
HTM_TD_Begin ("class=\"LT\"");
if (Action != ActUnk)
Frm_StartFormAnchor (Action,Pri_PRIVACY_ID);
HTM_UL_Begin ("class=\"PRI_LIST LIST_LEFT\"");
for (Visibility = Pri_VISIBILITY_USER;
Visibility <= Pri_VISIBILITY_WORLD;
Visibility++)
if (MaskAllowedVisibility & (1 << Visibility))
{
HTM_LI_Begin ("class=\"%s\"",
(Visibility == CurrentVisibilityInDB) ? "DAT_N LIGHT_BLUE" :
"DAT");
HTM_LABEL_Begin (NULL);
HTM_INPUT_RADIO (ParamName,Action != ActUnk,
"value=\"%u\"%s%s",
(unsigned) Visibility,
Visibility == CurrentVisibilityInDB ? " checked=\"checked\"" : "",
Action == ActUnk ? " disabled=\"disabled\"" : "");
HTM_Txt (Txt_PRIVACY_OPTIONS[Visibility]);
HTM_LABEL_End ();
HTM_LI_End ();
}
/***** End list and form *****/
HTM_UL_End ();
if (Action != ActUnk)
Frm_EndForm ();
HTM_TD_End ();
HTM_TR_End ();
}
/*****************************************************************************/
/************************ Get visibility from string *************************/
/*****************************************************************************/
Pri_Visibility_t Pri_GetVisibilityFromStr (const char *Str)
{
Pri_Visibility_t Visibility;
for (Visibility = (Pri_Visibility_t) 0;
Visibility < Pri_NUM_OPTIONS_PRIVACY;
Visibility++)
if (!strcasecmp (Str,Pri_VisibilityDB[Visibility]))
return Visibility;
return Pri_VISIBILITY_UNKNOWN;
}
/*****************************************************************************/
/**************** Get parameter with visibility from form ********************/
/*****************************************************************************/
Pri_Visibility_t Pri_GetParamVisibility (const char *ParamName,
unsigned MaskAllowedVisibility)
{
Pri_Visibility_t Visibility;
Visibility = (Pri_Visibility_t) Par_GetParToUnsignedLong (ParamName,
0,
Pri_NUM_OPTIONS_PRIVACY - 1,
(unsigned long) Pri_VISIBILITY_UNKNOWN);
return (MaskAllowedVisibility & (1 << Visibility)) ? Visibility :
Pri_VISIBILITY_UNKNOWN;
}
/*****************************************************************************/
/*********** Check if user's photo of public profile can be shown ************/
/*****************************************************************************/
// Returns true if it can be shown and false if not.
bool Pri_ShowingIsAllowed (Pri_Visibility_t Visibility,struct UsrData *UsrDat)
{
bool ItsMe = Usr_ItsMe (UsrDat->UsrCod);
/***** I always can see my things *****/
if (ItsMe)
return true;
/***** System admins always can see others' profiles *****/
if (Gbl.Usrs.Me.Role.Logged == Rol_SYS_ADM)
return true;
/***** Check if I can see the other's photo *****/
switch (Visibility)
{
case Pri_VISIBILITY_UNKNOWN:
return false; // It's not me
case Pri_VISIBILITY_USER: // Only visible
// by me and my teachers if I am a student
// or me and my students if I am a teacher
// Do both users share the same course but whit different role?
return Usr_CheckIfUsrSharesAnyOfMyCrsWithDifferentRole (UsrDat->UsrCod);
case Pri_VISIBILITY_COURSE: // Visible by users sharing courses with me
// Do both users share the same course?
return Usr_CheckIfUsrSharesAnyOfMyCrs (UsrDat);
case Pri_VISIBILITY_SYSTEM: // Visible by any user logged in platform
return Gbl.Usrs.Me.Logged;
case Pri_VISIBILITY_WORLD: // Public, visible by everyone, even unlogged visitors
return true;
}
return false; // Never reached. To avoid warning
}
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