Move custom libs to the source tree

22 files changed, 613 insertions, 0 deletions

diff --git a/libs/SimpleValidator/Validator.php b/libs/SimpleValidator/Validator.php
new file mode 100644
index 00000000..30015dc6
--- /dev/null
+++ b/libs/SimpleValidator/Validator.php
@@ -0,0 +1,44 @@
+<?php
+
+namespace SimpleValidator;
+
+class Validator
+{
+    private $data = array();
+    private $errors = array();
+    private $validators = array();
+
+    public function __construct(array $data, array $validators)
+    {
+        $this->data = $data;
+        $this->validators = $validators;
+    }
+
+    public function execute()
+    {
+        $result = true;
+
+        foreach ($this->validators as $validator) {
+            if (! $validator->execute($this->data)) {
+                $this->addError($validator->getField(), $validator->getErrorMessage());
+                $result = false;
+            }
+        }
+
+        return $result;
+    }
+
+    public function addError($field, $message)
+    {
+        if (! isset($this->errors[$field])) {
+            $this->errors[$field] = array();
+        }
+
+        $this->errors[$field][] = $message;
+    }
+
+    public function getErrors()
+    {
+        return $this->errors;
+    }
+}
diff --git a/libs/SimpleValidator/Validators/Alpha.php b/libs/SimpleValidator/Validators/Alpha.php
new file mode 100644
index 00000000..c29ba481
--- /dev/null
+++ b/libs/SimpleValidator/Validators/Alpha.php
@@ -0,0 +1,15 @@
+<?php
+
+namespace SimpleValidator\Validators;
+
+class Alpha extends Base
+{
+    public function execute(array $data)
+    {
+        if ($this->isFieldNotEmpty($data)) {
+            return ctype_alpha($data[$this->field]);
+        }
+
+        return true;
+    }
+}
diff --git a/libs/SimpleValidator/Validators/AlphaNumeric.php b/libs/SimpleValidator/Validators/AlphaNumeric.php
new file mode 100644
index 00000000..8d5000b4
--- /dev/null
+++ b/libs/SimpleValidator/Validators/AlphaNumeric.php
@@ -0,0 +1,15 @@
+<?php
+
+namespace SimpleValidator\Validators;
+
+class AlphaNumeric extends Base
+{
+    public function execute(array $data)
+    {
+        if ($this->isFieldNotEmpty($data)) {
+            return ctype_alnum($data[$this->field]);
+        }
+
+        return true;
+    }
+}
diff --git a/libs/SimpleValidator/Validators/Base.php b/libs/SimpleValidator/Validators/Base.php
new file mode 100644
index 00000000..8157ae50
--- /dev/null
+++ b/libs/SimpleValidator/Validators/Base.php
@@ -0,0 +1,37 @@
+<?php
+
+namespace SimpleValidator\Validators;
+
+abstract class Base
+{
+    protected $field = '';
+    protected $error_message = '';
+    protected $data = array();
+
+    abstract public function execute(array $data);
+
+    public function __construct($field, $error_message)
+    {
+        $this->field = $field;
+        $this->error_message = $error_message;
+    }
+
+    public function getErrorMessage()
+    {
+        return $this->error_message;
+    }
+
+    public function getField()
+    {
+        if (is_array($this->field)) {
+            return $this->field[0];
+        }
+
+        return $this->field;
+    }
+
+    public function isFieldNotEmpty(array $data)
+    {
+        return isset($data[$this->field]) && $data[$this->field] !== '';
+    }
+}
diff --git a/libs/SimpleValidator/Validators/Date.php b/libs/SimpleValidator/Validators/Date.php
new file mode 100644
index 00000000..4ec4b7fd
--- /dev/null
+++ b/libs/SimpleValidator/Validators/Date.php
@@ -0,0 +1,45 @@
+<?php
+
+namespace SimpleValidator\Validators;
+
+use DateTime;
+
+class Date extends Base
+{
+    private $formats = array();
+
+    public function __construct($field, $error_message, array $formats)
+    {
+        parent::__construct($field, $error_message);
+        $this->formats = $formats;
+    }
+
+    public function execute(array $data)
+    {
+        if ($this->isFieldNotEmpty($data)) {
+            foreach ($this->formats as $format) {
+                if ($this->isValidDate($data[$this->field], $format)) {
+                    return true;
+                }
+            }
+
+            return false;
+        }
+
+        return true;
+    }
+
+    public function isValidDate($value, $format)
+    {
+        $date = DateTime::createFromFormat($format, $value);
+
+        if ($date !== false) {
+            $errors = DateTime::getLastErrors();
+            if ($errors['error_count'] === 0 && $errors['warning_count'] === 0) {
+                return $date->getTimestamp() > 0;
+            }
+        }
+
+        return false;
+    }
+}
diff --git a/libs/SimpleValidator/Validators/Email.php b/libs/SimpleValidator/Validators/Email.php
new file mode 100644
index 00000000..f3977042
--- /dev/null
+++ b/libs/SimpleValidator/Validators/Email.php
@@ -0,0 +1,67 @@
+<?php
+
+namespace SimpleValidator\Validators;
+
+class Email extends Base
+{
+    public function execute(array $data)
+    {
+        if ($this->isFieldNotEmpty($data)) {
+
+            // I use the same validation method as Firefox
+            // http://hg.mozilla.org/mozilla-central/file/cf5da681d577/content/html/content/src/nsHTMLInputElement.cpp#l3967
+
+            $value = $data[$this->field];
+            $length = strlen($value);
+
+            // If the email address begins with a '@' or ends with a '.',
+            // we know it's invalid.
+            if ($value[0] === '@' || $value[$length - 1] === '.') {
+
+            	return false;
+            }
+
+            // Check the username
+            for ($i = 0; $i < $length && $value[$i] !== '@'; ++$i) {
+
+                $c = $value[$i];
+
+                if (! (ctype_alnum($c) || $c === '.' || $c === '!' || $c === '#' || $c === '$' ||
+                    $c === '%' || $c === '&' || $c === '\'' || $c === '*' || $c === '+' ||
+                    $c === '-' || $c === '/' || $c === '=' || $c === '?' || $c === '^' ||
+                    $c === '_' || $c === '`' || $c === '{' || $c === '|' || $c === '}' ||
+                    $c === '~')) {
+
+                    return false;
+                }
+            }
+
+            // There is no domain name (or it's one-character long),
+            // that's not a valid email address.
+            if (++$i >= $length) return false;
+            if (($i + 1) === $length) return false;
+
+            // The domain name can't begin with a dot.
+            if ($value[$i] === '.') return false;
+
+            // Parsing the domain name.
+            for (; $i < $length; ++$i) {
+
+                $c = $value[$i];
+
+                if ($c === '.') {
+
+                    // A dot can't follow a dot.
+                    if ($value[$i - 1] === '.') return false;
+                }
+                elseif (! (ctype_alnum($c) || $c === '-')) {
+
+                    // The domain characters have to be in this list to be valid.
+                    return false;
+                }
+            }
+        }
+
+        return true;
+    }
+}
diff --git a/libs/SimpleValidator/Validators/Equals.php b/libs/SimpleValidator/Validators/Equals.php
new file mode 100644
index 00000000..6b69dd80
--- /dev/null
+++ b/libs/SimpleValidator/Validators/Equals.php
@@ -0,0 +1,27 @@
+<?php
+
+namespace SimpleValidator\Validators;
+
+class Equals extends Base
+{
+    private $field2;
+
+    public function __construct($field1, $field2, $error_message)
+    {
+        parent::__construct($field1, $error_message);
+        $this->field2 = $field2;
+    }
+
+    public function execute(array $data)
+    {
+        if ($this->isFieldNotEmpty($data)) {
+            if (! isset($data[$this->field2])) {
+                return false;
+            }
+
+            return $data[$this->field] === $data[$this->field2];
+        }
+
+        return true;
+    }
+}
diff --git a/libs/SimpleValidator/Validators/Exists.php b/libs/SimpleValidator/Validators/Exists.php
new file mode 100644
index 00000000..1998e673
--- /dev/null
+++ b/libs/SimpleValidator/Validators/Exists.php
@@ -0,0 +1,38 @@
+<?php
+
+namespace SimpleValidator\Validators;
+
+use PDO;
+
+class Exists extends Base
+{
+    private $pdo;
+    private $key;
+    private $table;
+
+    public function __construct($field, $error_message, PDO $pdo, $table, $key = '')
+    {
+        parent::__construct($field, $error_message);
+
+        $this->pdo = $pdo;
+        $this->table = $table;
+        $this->key = $key;
+    }
+
+
+    public function execute(array $data)
+    {
+        if (! $this->isFieldNotEmpty($data)) {
+            return true;
+        }
+
+        if ($this->key === '') {
+            $this->key = $this->field;
+        }
+
+        $rq = $this->pdo->prepare('SELECT 1 FROM '.$this->table.' WHERE '.$this->key.'=?');
+        $rq->execute(array($data[$this->field]));
+
+        return $rq->fetchColumn() == 1;
+    }
+}
diff --git a/libs/SimpleValidator/Validators/GreaterThan.php b/libs/SimpleValidator/Validators/GreaterThan.php
new file mode 100644
index 00000000..6e560319
--- /dev/null
+++ b/libs/SimpleValidator/Validators/GreaterThan.php
@@ -0,0 +1,23 @@
+<?php
+
+namespace SimpleValidator\Validators;
+
+class GreaterThan extends Base
+{
+    private $min;
+
+    public function __construct($field, $error_message, $min)
+    {
+        parent::__construct($field, $error_message);
+        $this->min = $min;
+    }
+
+    public function execute(array $data)
+    {
+        if ($this->isFieldNotEmpty($data)) {
+            return $data[$this->field] > $this->min;
+        }
+
+        return true;
+    }
+}
diff --git a/libs/SimpleValidator/Validators/InArray.php b/libs/SimpleValidator/Validators/InArray.php
new file mode 100644
index 00000000..f2f8c134
--- /dev/null
+++ b/libs/SimpleValidator/Validators/InArray.php
@@ -0,0 +1,23 @@
+<?php
+
+namespace SimpleValidator\Validators;
+
+class InArray extends Base
+{
+    protected $array;
+
+    public function __construct($field, array $array, $error_message)
+    {
+        parent::__construct($field, $error_message);
+        $this->array = $array;
+    }
+
+    public function execute(array $data)
+    {
+        if ($this->isFieldNotEmpty($data)) {
+            return in_array($data[$this->field], $this->array);
+        }
+
+        return true;
+    }
+}
diff --git a/libs/SimpleValidator/Validators/Integer.php b/libs/SimpleValidator/Validators/Integer.php
new file mode 100644
index 00000000..5afdc1e0
--- /dev/null
+++ b/libs/SimpleValidator/Validators/Integer.php
@@ -0,0 +1,25 @@
+<?php
+
+namespace SimpleValidator\Validators;
+
+class Integer extends Base
+{
+    public function execute(array $data)
+    {
+        if ($this->isFieldNotEmpty($data)) {
+            if (is_string($data[$this->field])) {
+
+                if ($data[$this->field][0] === '-') {
+                    return ctype_digit(substr($data[$this->field], 1));
+                }
+
+                return ctype_digit($data[$this->field]);
+            }
+            else {
+                return is_int($data[$this->field]);
+            }
+        }
+
+        return true;
+    }
+}
diff --git a/libs/SimpleValidator/Validators/Ip.php b/libs/SimpleValidator/Validators/Ip.php
new file mode 100644
index 00000000..754f4f3e
--- /dev/null
+++ b/libs/SimpleValidator/Validators/Ip.php
@@ -0,0 +1,15 @@
+<?php
+
+namespace SimpleValidator\Validators;
+
+class Ip extends Base
+{
+    public function execute(array $data)
+    {
+        if ($this->isFieldNotEmpty($data)) {
+            return filter_var($data[$this->field], FILTER_VALIDATE_IP) !== false;
+        }
+
+        return true;
+    }
+}
diff --git a/libs/SimpleValidator/Validators/Length.php b/libs/SimpleValidator/Validators/Length.php
new file mode 100644
index 00000000..7ef241c4
--- /dev/null
+++ b/libs/SimpleValidator/Validators/Length.php
@@ -0,0 +1,26 @@
+<?php
+
+namespace SimpleValidator\Validators;
+
+class Length extends Base
+{
+    private $min;
+    private $max;
+
+    public function __construct($field, $error_message, $min, $max)
+    {
+        parent::__construct($field, $error_message);
+        $this->min = $min;
+        $this->max = $max;
+    }
+
+    public function execute(array $data)
+    {
+        if ($this->isFieldNotEmpty($data)) {
+            $length = mb_strlen($data[$this->field], 'UTF-8');
+            return $length >= $this->min && $length <= $this->max;
+        }
+
+        return true;
+    }
+}
diff --git a/libs/SimpleValidator/Validators/MaxLength.php b/libs/SimpleValidator/Validators/MaxLength.php
new file mode 100644
index 00000000..6c4e7771
--- /dev/null
+++ b/libs/SimpleValidator/Validators/MaxLength.php
@@ -0,0 +1,24 @@
+<?php
+
+namespace SimpleValidator\Validators;
+
+class MaxLength extends Base
+{
+    private $max;
+
+    public function __construct($field, $error_message, $max)
+    {
+        parent::__construct($field, $error_message);
+        $this->max = $max;
+    }
+
+    public function execute(array $data)
+    {
+        if ($this->isFieldNotEmpty($data)) {
+            $length = mb_strlen($data[$this->field], 'UTF-8');
+            return $length <= $this->max;
+        }
+
+        return true;
+    }
+}
diff --git a/libs/SimpleValidator/Validators/MinLength.php b/libs/SimpleValidator/Validators/MinLength.php
new file mode 100644
index 00000000..0ac4217a
--- /dev/null
+++ b/libs/SimpleValidator/Validators/MinLength.php
@@ -0,0 +1,24 @@
+<?php
+
+namespace SimpleValidator\Validators;
+
+class MinLength extends Base
+{
+    private $min;
+
+    public function __construct($field, $error_message, $min)
+    {
+        parent::__construct($field, $error_message);
+        $this->min = $min;
+    }
+
+    public function execute(array $data)
+    {
+        if ($this->isFieldNotEmpty($data)) {
+            $length = mb_strlen($data[$this->field], 'UTF-8');
+            return $length >= $this->min;
+        }
+
+        return true;
+    }
+}
diff --git a/libs/SimpleValidator/Validators/NotEmpty.php b/libs/SimpleValidator/Validators/NotEmpty.php
new file mode 100644
index 00000000..bbb14b5b
--- /dev/null
+++ b/libs/SimpleValidator/Validators/NotEmpty.php
@@ -0,0 +1,15 @@
+<?php
+
+namespace SimpleValidator\Validators;
+
+class NotEmpty extends Base
+{
+    public function execute(array $data)
+    {
+        if (array_key_exists($this->field, $data)) {
+            return $data[$this->field] !== null && $data[$this->field] !== '';
+        }
+
+        return true;
+    }
+}
diff --git a/libs/SimpleValidator/Validators/NotEquals.php b/libs/SimpleValidator/Validators/NotEquals.php
new file mode 100644
index 00000000..d1d949ea
--- /dev/null
+++ b/libs/SimpleValidator/Validators/NotEquals.php
@@ -0,0 +1,28 @@
+<?php
+
+namespace SimpleValidator\Validators;
+
+class NotEquals extends Base
+{
+    private $field2;
+
+    public function __construct($field1, $field2, $error_message)
+    {
+        parent::__construct($field1, $error_message);
+        $this->field2 = $field2;
+    }
+
+    public function execute(array $data)
+    {
+        if ($this->isFieldNotEmpty($data)) {
+
+            if (! isset($data[$this->field2])) {
+                return true;
+            }
+
+            return $data[$this->field] !== $data[$this->field2];
+        }
+
+        return true;
+    }
+}
diff --git a/libs/SimpleValidator/Validators/NotInArray.php b/libs/SimpleValidator/Validators/NotInArray.php
new file mode 100644
index 00000000..98974c9c
--- /dev/null
+++ b/libs/SimpleValidator/Validators/NotInArray.php
@@ -0,0 +1,15 @@
+<?php
+
+namespace SimpleValidator\Validators;
+
+class NotInArray extends InArray
+{
+    public function execute(array $data)
+    {
+        if ($this->isFieldNotEmpty($data)) {
+            return ! in_array($data[$this->field], $this->array);
+        }
+
+        return true;
+    }
+}
diff --git a/libs/SimpleValidator/Validators/Numeric.php b/libs/SimpleValidator/Validators/Numeric.php
new file mode 100644
index 00000000..31226866
--- /dev/null
+++ b/libs/SimpleValidator/Validators/Numeric.php
@@ -0,0 +1,15 @@
+<?php
+
+namespace SimpleValidator\Validators;
+
+class Numeric extends Base
+{
+    public function execute(array $data)
+    {
+        if ($this->isFieldNotEmpty($data)) {
+            return is_numeric($data[$this->field]);
+        }
+
+        return true;
+    }
+}
diff --git a/libs/SimpleValidator/Validators/Range.php b/libs/SimpleValidator/Validators/Range.php
new file mode 100644
index 00000000..065b2b9d
--- /dev/null
+++ b/libs/SimpleValidator/Validators/Range.php
@@ -0,0 +1,33 @@
+<?php
+
+namespace SimpleValidator\Validators;
+
+class Range extends Base
+{
+    private $min;
+    private $max;
+
+    public function __construct($field, $error_message, $min, $max)
+    {
+        parent::__construct($field, $error_message);
+
+        $this->min = $min;
+        $this->max = $max;
+    }
+
+    public function execute(array $data)
+    {
+        if ($this->isFieldNotEmpty($data)) {
+
+            if (! is_numeric($data[$this->field])) {
+                return false;
+            }
+
+            if ($data[$this->field] < $this->min || $data[$this->field] > $this->max) {
+                return false;
+            }
+        }
+
+        return true;
+    }
+}
diff --git a/libs/SimpleValidator/Validators/Required.php b/libs/SimpleValidator/Validators/Required.php
new file mode 100644
index 00000000..f5e65616
--- /dev/null
+++ b/libs/SimpleValidator/Validators/Required.php
@@ -0,0 +1,11 @@
+<?php
+
+namespace SimpleValidator\Validators;
+
+class Required extends Base
+{
+    public function execute(array $data)
+    {
+        return $this->isFieldNotEmpty($data);
+    }
+}
diff --git a/libs/SimpleValidator/Validators/Unique.php b/libs/SimpleValidator/Validators/Unique.php
new file mode 100644
index 00000000..00caeb54
--- /dev/null
+++ b/libs/SimpleValidator/Validators/Unique.php
@@ -0,0 +1,48 @@
+<?php
+
+namespace SimpleValidator\Validators;
+
+use PDO;
+
+class Unique extends Base
+{
+    private $pdo;
+    private $primary_key;
+    private $table;
+
+    public function __construct($field, $error_message, PDO $pdo, $table, $primary_key = 'id')
+    {
+        parent::__construct($field, $error_message);
+
+        $this->pdo = $pdo;
+        $this->primary_key = $primary_key;
+        $this->table = $table;
+    }
+
+    public function execute(array $data)
+    {
+        if ($this->isFieldNotEmpty($data)) {
+            if (! isset($data[$this->primary_key])) {
+                $rq = $this->pdo->prepare('SELECT 1 FROM '.$this->table.' WHERE '.$this->field.'=?');
+                $rq->execute(array($data[$this->field]));
+            }
+            else {
+
+                $rq = $this->pdo->prepare(
+                    'SELECT 1 FROM '.$this->table.'
+                    WHERE '.$this->field.'=? AND '.$this->primary_key.' != ?'
+                );
+
+                $rq->execute(array($data[$this->field], $data[$this->primary_key]));
+            }
+
+            $result = $rq->fetchColumn();
+
+            if ($result == 1) { // Postgresql returns an integer but other database returns a string '1'
+                return false;
+            }
+        }
+
+        return true;
+    }
+}