1 files changed, 93 insertions, 0 deletions
diff --git a/post/util.go b/post/util.go
new file mode 100644
index 0000000..c4920f7
--- /dev/null
+++ b/post/util.go
@@ -0,0 +1,93 @@
+package post
+
+import (
+	"mime/multipart"
+	"net/http"
+	"regexp"
+
+	"github.com/FChannel0/FChannel-Server/config"
+)
+
+type PostBlacklist struct {
+	Id    int
+	Regex string
+}
+
+func DeleteRegexBlacklistDB(id int) error {
+	query := `delete from postblacklist where id=$1`
+
+	_, err := config.DB.Exec(query, id)
+	return err
+}
+
+func GetFileContentType(out multipart.File) (string, error) {
+	buffer := make([]byte, 512)
+
+	_, err := out.Read(buffer)
+	if err != nil {
+		return "", err
+	}
+
+	out.Seek(0, 0)
+
+	contentType := http.DetectContentType(buffer)
+
+	return contentType, nil
+}
+
+func GetRegexBlacklistDB() ([]PostBlacklist, error) {
+	var list []PostBlacklist
+
+	query := `select id, regex from postblacklist`
+
+	rows, err := config.DB.Query(query)
+	if err != nil {
+		return list, err
+	}
+
+	defer rows.Close()
+	for rows.Next() {
+		var temp PostBlacklist
+		rows.Scan(&temp.Id, &temp.Regex)
+
+		list = append(list, temp)
+	}
+
+	return list, nil
+}
+
+func IsPostBlacklist(comment string) (bool, error) {
+	postblacklist, err := GetRegexBlacklistDB()
+
+	if err != nil {
+		return false, err
+	}
+
+	for _, e := range postblacklist {
+		re := regexp.MustCompile(e.Regex)
+
+		if re.MatchString(comment) {
+			return true, nil
+		}
+	}
+
+	return false, nil
+}
+
+func WriteRegexBlacklistDB(regex string) error {
+	var re string
+
+	query := `select from postblacklist where regex=$1`
+	if err := config.DB.QueryRow(query, regex).Scan(&re); err != nil {
+		return err
+	}
+
+	if re != "" {
+		return nil
+	}
+
+	query = `insert into postblacklist (regex) values ($1)`
+
+	_, err := config.DB.Exec(query, regex)
+	return err
+}