Adapt welcome wallpaper to SGU gender

docs/architecture.md

@@ -27,8 +27,8 @@ accepted it. The broker then makes separately bounded, best-effort profile GETs.
 It uses the administrative incident overview for `AD`, the student information
 page for `AL`, and the portal menu as a conservative base for `DO`. After the
 incident page confirms an `AD` employee number, two additional GETs in the same
-in-memory session read the structured name from `datos/personales.aspx` and the
+in-memory session read the structured name and selected sex from
-address from `datos/ubicacion.aspx`. Docentes request
+`datos/personales.aspx` and the address from `datos/ubicacion.aspx`. Docentes request
 `nomina/consultanomina.aspx` for a matching employee number, email, employee
 type and job title, then attempt the same two shared staff modules without
 requiring any optional route to exist. A supplemental
@@ -61,7 +61,9 @@ passes the submitted password directly to ADSI `SetPassword`.
 When the authenticated HTML exposes recognized stable IDs, the broker also
 updates the applicable `displayName`, `givenName`, `sn`, `mail`, `title`,
 `department`, `employeeType`, `employeeID`, `streetAddress`, `l`, `st`, and
-`postalCode` attributes. Administrative and student numbers must match the six
+`postalCode` attributes. The SGU sex value is normalized to `Male`/`Female` and
+written as the managed `SGU-Gender:` line in the built-in `info` attribute while
+preserving unrelated notes. Administrative and student numbers must match the six
 numeric digits of the requested identity before any role-specific metadata is
 trusted. Administrative personal and location pages are accepted only after
 that incident-page match. Docente payroll metadata must match the requested
@@ -118,6 +120,9 @@ settings for managed clients.
 
 That computer GPO also owns the base lock-screen image and a per-logon command
 for the personalized desktop wallpaper. The client-side renderer reads the
+managed `SGU-Gender: Male|Female` line from the user's built-in `info` attribute
+(without requiring an irreversible AD schema extension). It uses neutral Spanish
+when that optional enrichment is unavailable. The renderer also reads the
 authenticated user's `displayName` plus the computer object's `location` and
 immediate parent OU, then composes those values over the bundled dark-blue
 background with the bundled Indivisa fonts. Missing directory attributes degrade

docs/welcome-wallpaper.md

@@ -16,14 +16,20 @@ El generador consulta Active Directory con la identidad ya autenticada y sin
 guardar credenciales. Obtiene:
 
 - `displayName` del usuario; si falta, utiliza `sAMAccountName`.
+- La línea administrada `SGU-Gender: Male|Female` del atributo `info`; el Auth
+  Broker la obtiene del SGU y conserva cualquier otra nota que ya exista.
 - `location` del objeto de equipo.
 - La OU padre inmediata a partir de `distinguishedName`.
 
-El texto secundario sigue estas reglas:
+El saludo usa `Bienvenido/ubicado` para `Male` y `Bienvenida/ubicada` para
+`Female`. Cuando el enriquecimiento no produjo este dato, utiliza la redacción
+neutral `Te damos la bienvenida` y `Ubicación:`. El texto secundario sigue estas
+reglas:
 
 1. Con `location` y OU: `Estás ubicado en la Sala de Inmersión del Centro de Experiencia Digital.`
 2. Con sólo uno de los datos: muestra únicamente el dato disponible.
-3. Sin ambos: `Bienvenido al Laboratorio de Cómputo de Ingeniería.`
+3. Sin ambos: el texto adaptado `Bienvenido/Bienvenida al Laboratorio...`; sin
+   sexo disponible, la forma neutral `Acceso al Laboratorio de Cómputo de Ingeniería.`
 
 La ausencia de AD, de un atributo o de una tipografía nunca bloquea la sesión.
 Los errores de generación se registran en

scripts/Publish-GiteaRelease.ps1

@@ -103,6 +103,7 @@ Bootstrap reproducible para el laboratorio SGU.
 - `sgu-client-bootstrap-$Version.zip`: registra un certificado mTLS único, instala y valida el Credential Provider antes de unir el equipo al dominio, habilita RDP/WinRM y se repara al arranque.
 - `sgu-linux-client-bootstrap-$Version.zip`: une clientes Debian/Ubuntu o RHEL/Fedora/Rocky/AlmaLinux con realmd, Kerberos y SSSD. Solicita interactivamente la contraseña de unión y no instala el Credential Provider de Windows.
 - El Auth Broker clasifica sin tareas programadas cada cuenta autenticada: `AL` se agrega a `SGU-Alumnos`, `AD` a `SGU-Administrativos` y `DO` a `SGU-Docentes`; el bootstrap crea estos grupos de seguridad de forma idempotente.
+- El enriquecimiento obtiene el sexo de los módulos SGU de personal/alumnos, lo conserva como la línea administrada `SGU-Gender: Male|Female` en Notas de AD y adapta el fondo de Windows/Linux; cuando falta utiliza redacción neutral.
 - El servidor configura WEF/WEC para registrar sesiones y fallos, inventariar el estado alcanzable de las máquinas cada cinco minutos y conservar durante 183 días tanto esos eventos como el diagnóstico estructurado del Auth Broker.
 - Windows Home se detecta y se rechaza con una explicación, ya que no admite unión a Active Directory ni RDP host.
 

scripts/Set-SguWelcomeWallpaper.ps1

@@ -8,6 +8,8 @@ param(
     [string]$ComputerName = $env:COMPUTERNAME,
     [string]$Location,
     [string]$OrganizationalUnit,
+    [ValidateSet('Male', 'Female')]
+    [string]$Gender,
     [ValidateRange(640, 16384)]
     [int]$CanvasWidth,
     [ValidateRange(480, 16384)]
@@ -67,6 +69,22 @@ function Get-ImmediateOrganizationalUnit {
     return $null
 }
 
+function Get-SguGenderFromInfo {
+    param([string]$Info)
+
+    if (-not $Info) {
+        return $null
+    }
+
+    foreach ($line in $Info -split '\r?\n') {
+        if ($line -match '^\s*SGU-Gender:\s*(Male|Female)\s*$') {
+            return [Globalization.CultureInfo]::InvariantCulture.TextInfo.ToTitleCase(
+                $Matches[1].ToLowerInvariant())
+        }
+    }
+    return $null
+}
+
 function Get-DirectoryWelcomeMetadata {
     param(
         [Parameter(Mandatory)][string]$UserName,
@@ -93,6 +111,7 @@ function Get-DirectoryWelcomeMetadata {
             $userSearcher.Filter = '(&(objectCategory=person)(objectClass=user)(sAMAccountName={0}))' -f `
                 (ConvertTo-LdapFilterValue -Value $UserName)
             [void]$userSearcher.PropertiesToLoad.Add('displayName')
+            [void]$userSearcher.PropertiesToLoad.Add('info')
             $userResult = $userSearcher.FindOne()
             $directoryDisplayName = if ($userResult -and $userResult.Properties['displayname'].Count) {
                 [string]$userResult.Properties['displayname'][0]
@@ -100,6 +119,12 @@ function Get-DirectoryWelcomeMetadata {
             else {
                 $null
             }
+            $directoryGender = if ($userResult -and $userResult.Properties['info'].Count) {
+                Get-SguGenderFromInfo -Info ([string]$userResult.Properties['info'][0])
+            }
+            else {
+                $null
+            }
         }
         finally {
             $userSearcher.Dispose()
@@ -136,6 +161,7 @@ function Get-DirectoryWelcomeMetadata {
 
     [pscustomobject]@{
         DisplayName = $directoryDisplayName
+        Gender = $directoryGender
         Location = $directoryLocation
         OrganizationalUnit = Get-ImmediateOrganizationalUnit -DistinguishedName $computerDn
     }
@@ -156,11 +182,20 @@ function Get-SpanishArticle {
 function Get-WelcomeLocationText {
     param(
         [string]$Room,
-        [string]$OuName
+        [string]$OuName,
+        [string]$Gender
     )
 
-    $located = 'Est{0}s ubicado en' -f [char]0x00E1
+    $located = switch ($Gender) {
-    $engineeringLab = 'Bienvenido al Laboratorio de C{0}mputo de Ingenier{1}a.' -f [char]0x00F3,[char]0x00ED
+        'Male' { 'Est{0}s ubicado en' -f [char]0x00E1 }
+        'Female' { 'Est{0}s ubicada en' -f [char]0x00E1 }
+        default { 'Ubicaci{0}n:' -f [char]0x00F3 }
+    }
+    $engineeringLab = switch ($Gender) {
+        'Male' { 'Bienvenido al Laboratorio de C{0}mputo de Ingenier{1}a.' -f [char]0x00F3,[char]0x00ED }
+        'Female' { 'Bienvenida al Laboratorio de C{0}mputo de Ingenier{1}a.' -f [char]0x00F3,[char]0x00ED }
+        default { 'Acceso al Laboratorio de C{0}mputo de Ingenier{1}a.' -f [char]0x00F3,[char]0x00ED }
+    }
     $Room = if ($Room) { $Room.Trim() } else { $null }
     $OuName = if ($OuName) { $OuName.Trim() } else { $null }
 
@@ -184,6 +219,16 @@ function Get-WelcomeLocationText {
     return $engineeringLab
 }
 
+function Get-WelcomeHeading {
+    param([string]$Gender)
+
+    switch ($Gender) {
+        'Male' { return 'Bienvenido,' }
+        'Female' { return 'Bienvenida,' }
+        default { return 'Te damos la bienvenida,' }
+    }
+}
+
 function Get-AvailableFontFamily {
     param(
         [Parameter(Mandatory)][string[]]$Candidates,
@@ -270,10 +315,15 @@ if (-not $DisplayName) {
 if (-not $PSBoundParameters.ContainsKey('Location') -and $metadata) {
     $Location = $metadata.Location
 }
+$genderWasProvided = $PSBoundParameters.ContainsKey('Gender')
+if (-not $genderWasProvided -and $metadata) {
+    $Gender = $metadata.Gender
+}
+$welcomeHeading = Get-WelcomeHeading -Gender $Gender
 if (-not $PSBoundParameters.ContainsKey('OrganizationalUnit') -and $metadata) {
     $OrganizationalUnit = $metadata.OrganizationalUnit
 }
-$locationText = Get-WelcomeLocationText -Room $Location -OuName $OrganizationalUnit
+$locationText = Get-WelcomeLocationText -Room $Location -OuName $OrganizationalUnit -Gender $Gender
 
 if (-not $CanvasWidth -or -not $CanvasHeight) {
     try {
@@ -366,7 +416,7 @@ try {
         $format.Trimming = [Drawing.StringTrimming]::EllipsisWord
         try {
             $graphics.FillRectangle($panelBrush, $panelX, $panelY, $panelWidth, $panelHeight)
-            Draw-CenteredText -Graphics $graphics -Text 'Bienvenido,' -Font $welcomeFont `
+            Draw-CenteredText -Graphics $graphics -Text $welcomeHeading -Font $welcomeFont `
                 -Brush $accentBrush -Bounds ([Drawing.RectangleF]::new($panelX, $panelY + 24*$scale, $panelWidth, 50*$scale)) -Format $format
             Draw-CenteredText -Graphics $graphics -Text $DisplayName -Font $nameFont `
                 -Brush $whiteBrush -Bounds ([Drawing.RectangleF]::new($panelX + 30*$scale, $panelY + 64*$scale, $panelWidth - 60*$scale, 105*$scale)) -Format $format
@@ -433,12 +483,15 @@ namespace Sgu {
     }
 }
 
-Write-WelcomeLog -Message ("OK computer={0}; location={1}; ou={2}; output={3}" -f $ComputerName,[bool]$Location,[bool]$OrganizationalUnit,$OutputPath)
+$genderLogValue = if ($Gender) { $Gender } else { 'Neutral' }
+Write-WelcomeLog -Message ("OK computer={0}; gender={1}; location={2}; ou={3}; output={4}" -f $ComputerName,$genderLogValue,[bool]$Location,[bool]$OrganizationalUnit,$OutputPath)
 [pscustomobject]@{
     DisplayName = $DisplayName
     ComputerName = $ComputerName
     Location = $Location
     OrganizationalUnit = $OrganizationalUnit
+    Gender = $Gender
+    WelcomeHeading = $welcomeHeading
     LocationText = $locationText
     OutputPath = $OutputPath
     Applied = -not $SkipApply

scripts/Set-SguWelcomeWallpaper.sh

@@ -53,6 +53,7 @@ computer_name=${computer_name^^}
 location=''
 distinguished_name=''
 organizational_unit=''
+gender=''
 
 read_ldif_value() {
     local attribute=$1
@@ -108,9 +109,18 @@ if [[ -n $DOMAIN_CONTROLLER && -n $BASE_DN ]] &&
         user_result=$(ldapsearch -LLL -N -o ldif-wrap=no -Y GSSAPI \
             -H "ldap://${ldap_server}" -b "$BASE_DN" \
             "(&(objectCategory=person)(objectClass=user)(sAMAccountName=${account_name}))" \
-            displayName 2>/dev/null || true)
+            displayName info 2>/dev/null || true)
         directory_display_name=$(read_ldif_value displayName "$user_result")
         [[ -n $directory_display_name ]] && display_name=$directory_display_name
+        directory_info=$(read_ldif_value info "$user_result")
+        gender=$(printf '%s\n' "$directory_info" | awk -F: '
+            tolower($1) ~ /^[[:space:]]*sgu-gender[[:space:]]*$/ {
+                value=tolower($2); gsub(/^[[:space:]]+|[[:space:]]+$/, "", value)
+                if (value == "male") print "Male"
+                else if (value == "female") print "Female"
+                exit
+            }
+        ')
     fi
 else
     log_message 'WARN AD metadata query skipped because Kerberos or LDAP session data was unavailable.'
@@ -136,6 +146,24 @@ with_article() {
     fi
 }
 
+case "$gender" in
+    Male)
+        welcome_text='Bienvenido,'
+        located_text='Estás ubicado en'
+        engineering_lab_text='Bienvenido al Laboratorio de Cómputo de Ingeniería.'
+        ;;
+    Female)
+        welcome_text='Bienvenida,'
+        located_text='Estás ubicada en'
+        engineering_lab_text='Bienvenida al Laboratorio de Cómputo de Ingeniería.'
+        ;;
+    *)
+        welcome_text='Te damos la bienvenida,'
+        located_text='Ubicación:'
+        engineering_lab_text='Acceso al Laboratorio de Cómputo de Ingeniería.'
+        ;;
+esac
+
 if [[ -n $location && -n $organizational_unit ]]; then
     room_phrase=$(with_article "$location")
     ou_article=$(article_for "$organizational_unit")
@@ -146,13 +174,13 @@ if [[ -n $location && -n $organizational_unit ]]; then
     else
         ou_phrase="de ${organizational_unit}"
     fi
-    location_text="Estás ubicado en ${room_phrase} ${ou_phrase}."
+    location_text="${located_text} ${room_phrase} ${ou_phrase}."
 elif [[ -n $location ]]; then
-    location_text="Estás ubicado en $(with_article "$location")."
+    location_text="${located_text} $(with_article "$location")."
 elif [[ -n $organizational_unit ]]; then
-    location_text="Estás ubicado en $(with_article "$organizational_unit")."
+    location_text="${located_text} $(with_article "$organizational_unit")."
 else
-    location_text='Bienvenido al Laboratorio de Cómputo de Ingeniería.'
+    location_text=$engineering_lab_text
 fi
 
 width=1600
@@ -210,7 +238,7 @@ if ! "${image_command[@]}" "$BASE_IMAGE" \
     -gravity center \
     -font "$sans_font" -weight 700 -style Normal -pointsize "$welcome_size" \
     -fill '#D3E2FF' -stroke 'rgba(0,0,0,0.48)' -strokewidth 1 \
-    -annotate "+0-$(( 92 * scale / 100 ))" 'Bienvenido,' \
+    -annotate "+0-$(( 92 * scale / 100 ))" "$welcome_text" \
     -font "$serif_font" -weight 700 -style Italic -pointsize "$name_size" \
     -fill white -annotate "+0-$(( 22 * scale / 100 ))" "$display_name" \
     -font "$sans_font" -weight 400 -style Normal -pointsize "$location_size" \
@@ -242,7 +270,7 @@ if [[ $applied == false ]] && command -v xfconf-query >/dev/null 2>&1; then
 fi
 
 if [[ $applied == true ]]; then
-    log_message "OK computer=${computer_name}; location=$([[ -n $location ]] && printf true || printf false); ou=$([[ -n $organizational_unit ]] && printf true || printf false); output=${output_path}"
+    log_message "OK computer=${computer_name}; gender=${gender:-Neutral}; location=$([[ -n $location ]] && printf true || printf false); ou=$([[ -n $organizational_unit ]] && printf true || printf false); output=${output_path}"
 else
     log_message 'WARN Wallpaper rendered, but no supported desktop background API was found.'
 fi

src/SGU.AuthBroker.Core/Profiles/InstitutionalGender.cs

@@ -0,0 +1,7 @@
+namespace SGU.AuthBroker.Core.Profiles;
+
+public enum InstitutionalGender
+{
+    Male,
+    Female
+}

src/SGU.AuthBroker.Core/Profiles/InstitutionalProfile.cs

@@ -12,7 +12,8 @@ public sealed record InstitutionalProfile(
     string? StreetAddress = null,
     string? City = null,
     string? State = null,
-    string? PostalCode = null)
+    string? PostalCode = null,
+    InstitutionalGender? Gender = null)
 {
     public bool HasValues =>
         EmployeeNumber is not null ||
@@ -26,7 +27,8 @@ public sealed record InstitutionalProfile(
         StreetAddress is not null ||
         City is not null ||
         State is not null ||
-        PostalCode is not null;
+        PostalCode is not null ||
+        Gender is not null;
 
     public InstitutionalProfile Overlay(InstitutionalProfile? values) =>
         values is null
@@ -44,6 +46,7 @@ public sealed record InstitutionalProfile(
                 StreetAddress = values.StreetAddress ?? StreetAddress,
                 City = values.City ?? City,
                 State = values.State ?? State,
-                PostalCode = values.PostalCode ?? PostalCode
+                PostalCode = values.PostalCode ?? PostalCode,
+                Gender = values.Gender ?? Gender
             };
 }

src/SGU.AuthBroker.Core/Profiles/SguProfileParser.cs

@@ -14,6 +14,8 @@ public static class SguProfileParser
     private const string AdministrativeGivenNameId = "ctl00_contenedor_txtNombre";
     private const string AdministrativePaternalSurnameId = "ctl00_contenedor_txtApaterno";
     private const string AdministrativeMaternalSurnameId = "ctl00_contenedor_txtAmaterno";
+    private const string AdministrativeGenderId = "ctl00_contenedor_ddlsexo";
+    private const string AdministrativeGenderName = "ctl00$contenedor$ddlsexo";
     private const string AdministrativeStreetId = "ctl00_contenedor_txtCalle";
     private const string AdministrativeExteriorNumberId = "ctl00_contenedor_txtNoExt";
     private const string AdministrativeInteriorNumberId = "ctl00_contenedor_txtNoInt";
@@ -34,6 +36,7 @@ public static class SguProfileParser
     private const string StudentCityId = "ctl00_contenedor_HistorialAlumno1_lblCiudadAlumnoHP";
     private const string StudentMunicipalityId = "ctl00_contenedor_HistorialAlumno1_lblDeloMunAlumnoHP";
     private const string StudentPostalCodeId = "ctl00_contenedor_HistorialAlumno1_lblCPAlumnoHP";
+    private const string StudentGenderId = "ctl00_contenedor_HistorialAlumno1_lblSexoAlumnoHP";
 
     public static InstitutionalProfile? ParseAdministrative(string html, string expectedEmployeeNumber)
         => ParseStaffHeader(html, expectedEmployeeNumber);
@@ -91,7 +94,11 @@ public static class SguProfileParser
         InstitutionalProfile profile = new(
             DisplayName: displayName,
             GivenName: givenName,
-            Surname: surname);
+            Surname: surname,
+            Gender: ParseStaffGender(ExtractSelectedOptionValue(
+                html,
+                AdministrativeGenderId,
+                AdministrativeGenderName)));
         return profile.HasValues ? profile : null;
     }
 
@@ -151,7 +158,8 @@ public static class SguProfileParser
             StreetAddress: streetAddress,
             City: city ?? municipality,
             State: NormalizeTitle(ExtractSpanText(html, StudentStateId), 128),
-            PostalCode: NormalizePostalCode(ExtractSpanText(html, StudentPostalCodeId)));
+            PostalCode: NormalizePostalCode(ExtractSpanText(html, StudentPostalCodeId)),
+            Gender: ParseStudentGender(ExtractSpanText(html, StudentGenderId)));
         return profile.HasValues ? profile : null;
     }
 
@@ -292,11 +300,68 @@ public static class SguProfileParser
         return nonPlaceholderOptions.Count == 1 ? nonPlaceholderOptions[0] : null;
     }
 
+    private static string? ExtractSelectedOptionValue(string html, string id, string name)
+    {
+        string? openingTag = FindOpeningTag(html, "select", id) ??
+            FindOpeningTagByAttribute(html, "select", "name", name);
+        if (openingTag is null)
+        {
+            return null;
+        }
+
+        int openingTagIndex = html.IndexOf(openingTag, StringComparison.OrdinalIgnoreCase);
+        int contentStart = openingTagIndex + openingTag.Length;
+        int contentEnd = html.IndexOf("</select", contentStart, StringComparison.OrdinalIgnoreCase);
+        if (openingTagIndex < 0 || contentEnd < 0)
+        {
+            return null;
+        }
+
+        string? selectedValue = ExtractAttributeValue(openingTag, "value");
+        string optionsHtml = html[contentStart..contentEnd];
+        int searchFrom = 0;
+        while (searchFrom < optionsHtml.Length)
+        {
+            int optionStart = optionsHtml.IndexOf("<option", searchFrom, StringComparison.OrdinalIgnoreCase);
+            if (optionStart < 0)
+            {
+                break;
+            }
+
+            int optionTagEnd = optionsHtml.IndexOf('>', optionStart);
+            if (optionTagEnd < 0)
+            {
+                break;
+            }
+
+            string optionTag = optionsHtml[optionStart..(optionTagEnd + 1)];
+            string? optionValue = ExtractAttributeValue(optionTag, "value");
+            if (optionValue is not null &&
+                (HasAttribute(optionTag, "selected") ||
+                 (selectedValue is not null &&
+                  string.Equals(optionValue, selectedValue, StringComparison.Ordinal))))
+            {
+                return NormalizeText(optionValue);
+            }
+
+            searchFrom = optionTagEnd + 1;
+        }
+
+        return null;
+    }
+
     private static string? FindOpeningTag(string html, string tagName, string id)
+        => FindOpeningTagByAttribute(html, tagName, "id", id);
+
+    private static string? FindOpeningTagByAttribute(
+        string html,
+        string tagName,
+        string attributeName,
+        string attributeValue)
     {
         foreach (char quote in new[] { '"', '\'' })
         {
-            string marker = $"id={quote}{id}{quote}";
+            string marker = $"{attributeName}={quote}{attributeValue}{quote}";
             int searchFrom = 0;
             while (searchFrom < html.Length)
             {
@@ -324,6 +389,20 @@ public static class SguProfileParser
         return null;
     }
 
+    private static InstitutionalGender? ParseStaffGender(string? value) => value?.Trim() switch
+    {
+        "1" => InstitutionalGender.Male,
+        "2" => InstitutionalGender.Female,
+        _ => null
+    };
+
+    private static InstitutionalGender? ParseStudentGender(string? value) => value?.Trim().ToUpperInvariant() switch
+    {
+        "M" => InstitutionalGender.Male,
+        "F" => InstitutionalGender.Female,
+        _ => null
+    };
+
     private static string? ExtractAttributeValue(string openingTag, string attributeName)
     {
         foreach (char quote in new[] { '"', '\'' })

src/SGU.AuthBroker/Services/ActiveDirectorySynchronizer.cs

@@ -11,6 +11,8 @@ public sealed class ActiveDirectorySynchronizer(
     BrokerOptions options,
     ILogger<ActiveDirectorySynchronizer> logger) : IActiveDirectorySynchronizer
 {
+    private const string GenderMetadataPrefix = "SGU-Gender:";
+    private const int InfoAttributeMaximumLength = 1024;
     private const int AccountDisabled = 0x0002;
     private const int NormalAccount = 0x0200;
     private static readonly AuthenticationTypes BindFlags =
@@ -164,6 +166,7 @@ public sealed class ActiveDirectorySynchronizer(
                 SetOptionalProperty(user, "l", profile.City);
                 SetOptionalProperty(user, "st", profile.State);
                 SetOptionalProperty(user, "postalCode", profile.PostalCode);
+                SetGenderMetadata(user, profile.Gender, identity.UserName, logger);
                 if (string.Equals(profile.EmployeeNumber, identity.NumericId, StringComparison.Ordinal))
                 {
                     SetOptionalProperty(user, "employeeID", profile.EmployeeNumber);
@@ -201,6 +204,56 @@ public sealed class ActiveDirectorySynchronizer(
         }
     }
 
+    private static void SetGenderMetadata(
+        DirectoryEntry entry,
+        InstitutionalGender? gender,
+        string institutionalUser,
+        ILogger logger)
+    {
+        if (gender is null)
+        {
+            return;
+        }
+
+        string existing = Convert.ToString(entry.Properties["info"].Value) ?? string.Empty;
+        string? updated = MergeGenderMetadata(existing, gender);
+        if (updated is null)
+        {
+            logger.LogWarning(
+                BrokerEventIds.DirectoryOptionalMetadataFailure,
+                "Gender metadata was not written for {InstitutionalUser} because the Active Directory info attribute has no remaining capacity.",
+                institutionalUser);
+            return;
+        }
+
+        entry.Properties["info"].Value = updated;
+    }
+
+    internal static string? MergeGenderMetadata(
+        string? existing,
+        InstitutionalGender? gender)
+    {
+        if (gender is null)
+        {
+            return null;
+        }
+
+        string managedLine = $"{GenderMetadataPrefix} {gender}";
+        string normalizedExisting = (existing ?? string.Empty)
+            .Replace("\r\n", "\n", StringComparison.Ordinal)
+            .Replace('\r', '\n');
+        string[] preservedLines = string.IsNullOrEmpty(normalizedExisting)
+            ? []
+            : normalizedExisting
+            .Split('\n')
+            .Where(line => !line.TrimStart().StartsWith(
+                GenderMetadataPrefix,
+                StringComparison.OrdinalIgnoreCase))
+            .ToArray();
+        string updated = string.Join("\r\n", preservedLines.Append(managedLine));
+        return updated.Length <= InfoAttributeMaximumLength ? updated : null;
+    }
+
     private void EnsureRoleGroupMembership(DirectoryEntry user, UserIdentity identity)
     {
         user.RefreshCache(["distinguishedName"]);

tests/SGU.AuthBroker.Core.Tests/SguProfileParserTests.cs

@@ -133,6 +133,64 @@ public sealed class SguProfileParserTests
         Assert.Null(profile.Email);
     }
 
+    [Theory]
+    [InlineData("ctl00_contenedor_ddlsexo", "ctl00$contenedor$ddlsexo", "1", InstitutionalGender.Male)]
+    [InlineData("alternate-id", "ctl00$contenedor$ddlsexo", "2", InstitutionalGender.Female)]
+    public void ParsesStaffGenderFromTheSelectedPersonalDataOption(
+        string id,
+        string name,
+        string selectedValue,
+        InstitutionalGender expected)
+    {
+        string html = $"""
+            <select id="{id}" name="{name}">
+              <option value="">Seleccione...</option>
+              <option value="1"{(selectedValue == "1" ? " selected=\"selected\"" : string.Empty)}>Masculino</option>
+              <option value="2"{(selectedValue == "2" ? " selected=\"selected\"" : string.Empty)}>Femenino</option>
+            </select>
+            """;
+
+        InstitutionalProfile? profile = SguProfileParser.ParseAdministrativePersonal(html);
+
+        Assert.NotNull(profile);
+        Assert.Equal(expected, profile.Gender);
+    }
+
+    [Theory]
+    [InlineData("M", InstitutionalGender.Male)]
+    [InlineData("f", InstitutionalGender.Female)]
+    public void ParsesStudentGenderFromTheInformationSpan(
+        string source,
+        InstitutionalGender expected)
+    {
+        string html = $"""
+            <span id="ctl00_contenedor_HistorialAlumno1_lblClaveAlumnoHP">123456</span>
+            <span id="ctl00_contenedor_HistorialAlumno1_lblSexoAlumnoHP">{source}</span>
+            """;
+
+        InstitutionalProfile? profile = SguProfileParser.ParseStudent(html, "123456");
+
+        Assert.NotNull(profile);
+        Assert.Equal(expected, profile.Gender);
+    }
+
+    [Fact]
+    public void IgnoresUnknownGenderValuesWithoutFailingProfileParsing()
+    {
+        const string html = """
+            <input id="ctl00_contenedor_txtNombre" value="PERSONA" />
+            <select id="ctl00_contenedor_ddlsexo">
+              <option selected="selected" value="9">SIN CLASIFICAR</option>
+            </select>
+            """;
+
+        InstitutionalProfile? profile = SguProfileParser.ParseAdministrativePersonal(html);
+
+        Assert.NotNull(profile);
+        Assert.Equal("Persona", profile.DisplayName);
+        Assert.Null(profile.Gender);
+    }
+
     [Fact]
     public void ParsesAdministrativeAddressFromInputsAndSelectedOptions()
     {
@@ -182,7 +240,8 @@ public sealed class SguProfileParserTests
         InstitutionalProfile personal = new(
             DisplayName: "María del Carmen de la Fuente",
             GivenName: "María del Carmen",
-            Surname: "de la Fuente");
+            Surname: "de la Fuente",
+            Gender: InstitutionalGender.Female);
         InstitutionalProfile location = new(
             StreetAddress: "Calle Uno 10",
             City: "Ciudad de México",
@@ -200,6 +259,7 @@ public sealed class SguProfileParserTests
         Assert.Equal("Ingeniería", combined.Department);
         Assert.Equal("Calle Uno 10", combined.StreetAddress);
         Assert.Equal("01000", combined.PostalCode);
+        Assert.Equal(InstitutionalGender.Female, combined.Gender);
     }
 
     [Fact]
@@ -215,6 +275,7 @@ public sealed class SguProfileParserTests
                 <span id="ctl00_contenedor_HistorialAlumno1_lblCorreoAlumnoHP">
                   <a href="mailto:alumna@lasalle.mx">ALUMNA@LASALLE.MX</a>
                 </span>
+                <span id="ctl00_contenedor_HistorialAlumno1_lblSexoAlumnoHP">F</span>
                 <span id="ctl00_contenedor_HistorialAlumno1_lblCURPAlumnoHP">
                   DATO-SENSIBLE-QUE-NO-DEBE-EXTRAERSE
                 </span>
@@ -262,6 +323,7 @@ public sealed class SguProfileParserTests
         Assert.Equal("Ciudad de México", profile.City);
         Assert.Equal("Ciudad de México", profile.State);
         Assert.Equal("08500", profile.PostalCode);
+        Assert.Equal(InstitutionalGender.Female, profile.Gender);
     }
 
     [Fact]

tests/SGU.AuthBroker.Tests/ActiveDirectorySynchronizerTests.cs

@@ -0,0 +1,34 @@
+using SGU.AuthBroker.Core.Profiles;
+using SGU.AuthBroker.Services;
+using Xunit;
+
+namespace SGU.AuthBroker.Tests;
+
+public sealed class ActiveDirectorySynchronizerTests
+{
+    [Fact]
+    public void GenderMetadataPreservesUnmanagedNotesAndReplacesItsManagedLine()
+    {
+        const string existing = "  Responsable de laboratorio  \r\n\r\nSGU-Gender: Male\r\nTurno vespertino";
+
+        string? updated = ActiveDirectorySynchronizer.MergeGenderMetadata(
+            existing,
+            InstitutionalGender.Female);
+
+        Assert.Equal(
+            "  Responsable de laboratorio  \r\n\r\nTurno vespertino\r\nSGU-Gender: Female",
+            updated);
+    }
+
+    [Fact]
+    public void GenderMetadataDoesNotTruncateAnExistingFullNotesField()
+    {
+        string existing = new('x', 1024);
+
+        string? updated = ActiveDirectorySynchronizer.MergeGenderMetadata(
+            existing,
+            InstitutionalGender.Male);
+
+        Assert.Null(updated);
+    }
+}

tests/SGU.AuthBroker.Tests/NtlmCredentialValidatorTests.cs

@@ -3,6 +3,7 @@ using System.Net.Http.Headers;
 using Microsoft.Extensions.Logging.Abstractions;
 using SGU.AuthBroker.Core.Authentication;
 using SGU.AuthBroker.Core.Identity;
+using SGU.AuthBroker.Core.Profiles;
 using SGU.AuthBroker.Options;
 using SGU.AuthBroker.Services;
 using Xunit;
@@ -132,6 +133,10 @@ public sealed class NtlmCredentialValidatorTests
                 <input id="ctl00_contenedor_txtNombre" value="MARÍA DEL CARMEN" />
                 <input id="ctl00_contenedor_txtApaterno" value="DE LA FUENTE" />
                 <input id="ctl00_contenedor_txtAmaterno" value="O'CONNOR" />
+                <select name="ctl00$contenedor$ddlsexo">
+                  <option value="1">Masculino</option>
+                  <option selected="selected" value="2">Femenino</option>
+                </select>
                 """),
             Response(
                 HttpStatusCode.OK,
@@ -168,6 +173,7 @@ public sealed class NtlmCredentialValidatorTests
         Assert.Equal("Álvaro Obregón", result.Profile.City);
         Assert.Equal("Ciudad de México", result.Profile.State);
         Assert.Equal("01000", result.Profile.PostalCode);
+        Assert.Equal(InstitutionalGender.Female, result.Profile.Gender);
         Assert.Equal(
             [
                 "/psulsa/",
@@ -224,6 +230,10 @@ public sealed class NtlmCredentialValidatorTests
                 <input id="ctl00_contenedor_txtNombre" value="MARÍA DEL CARMEN" />
                 <input id="ctl00_contenedor_txtApaterno" value="DE LA FUENTE" />
                 <input id="ctl00_contenedor_txtAmaterno" value="O'CONNOR" />
+                <select id="ctl00_contenedor_ddlsexo">
+                  <option selected="selected" value="1">Masculino</option>
+                  <option value="2">Femenino</option>
+                </select>
                 """),
             Response(
                 HttpStatusCode.OK,
@@ -262,6 +272,7 @@ public sealed class NtlmCredentialValidatorTests
         Assert.Equal("Álvaro Obregón", result.Profile.City);
         Assert.Equal("Ciudad de México", result.Profile.State);
         Assert.Equal("01000", result.Profile.PostalCode);
+        Assert.Equal(InstitutionalGender.Male, result.Profile.Gender);
         Assert.Equal(
             [
                 "/psulsa/",