Minimal support for MIME secret encoding (#1170)

Co-authored-by: Fabian Henneke <FabianHenneke@users.noreply.github.com>
(cherry picked from commit 38ece10e0dfdc907089b7ddc4e6c9d17e69013f3)

2 files changed, 28 insertions, 7 deletions

diff --git a/app/src/main/java/com/zeapo/pwdstore/model/PasswordEntry.kt b/app/src/main/java/com/zeapo/pwdstore/model/PasswordEntry.kt
index 556b2c87..a143fcb9 100644
--- a/app/src/main/java/com/zeapo/pwdstore/model/PasswordEntry.kt
+++ b/app/src/main/java/com/zeapo/pwdstore/model/PasswordEntry.kt
@@ -31,9 +31,9 @@ class PasswordEntry(content: String, private val totpFinder: TotpFinder = UriTot
     constructor(os: ByteArrayOutputStream) : this(os.toString("UTF-8"), UriTotpFinder())
 
     init {
-        val passContent = content.split("\n".toRegex(), 2).toTypedArray()
-        password = if (UriTotpFinder.TOTP_FIELDS.any { passContent[0].startsWith(it) }) "" else passContent[0]
-        extraContent = findExtraContent(passContent)
+        val (foundPassword, passContent) = findAndStripPassword(content.split("\n".toRegex()))
+        password = foundPassword
+        extraContent = passContent.joinToString("\n")
         username = findUsername()
         digits = findOtpDigits(content)
         totpSecret = findTotpSecret(content)
@@ -86,10 +86,16 @@ class PasswordEntry(content: String, private val totpFinder: TotpFinder = UriTot
         return null
     }
 
-    private fun findExtraContent(passContent: Array<String>) = when {
-        password.isEmpty() && passContent[0].isNotEmpty() -> passContent[0]
-        passContent.size > 1 -> passContent[1]
-        else -> ""
+    private fun findAndStripPassword(passContent: List<String>): Pair<String, List<String>> {
+        if (UriTotpFinder.TOTP_FIELDS.any { passContent[0].startsWith(it) }) return Pair("", passContent)
+        for (line in passContent) {
+            for (prefix in PASSWORD_FIELDS) {
+                if (line.startsWith(prefix, ignoreCase = true)) {
+                    return Pair(line.substring(prefix.length).trimStart(), passContent.minus(line))
+                }
+            }
+        }
+        return Pair(passContent[0], passContent.minus(passContent[0]))
     }
 
     private fun findTotpSecret(decryptedContent: String): String? {
@@ -121,5 +127,11 @@ class PasswordEntry(content: String, private val totpFinder: TotpFinder = UriTot
             "id:",
             "identity:"
         )
+
+        val PASSWORD_FIELDS = arrayOf(
+            "password:",
+            "secret:",
+            "pass:",
+        )
     }
 }
diff --git a/app/src/test/java/com/zeapo/pwdstore/model/PasswordEntryTest.kt b/app/src/test/java/com/zeapo/pwdstore/model/PasswordEntryTest.kt
index 6eecfe45..04c606e8 100644
--- a/app/src/test/java/com/zeapo/pwdstore/model/PasswordEntryTest.kt
+++ b/app/src/test/java/com/zeapo/pwdstore/model/PasswordEntryTest.kt
@@ -28,6 +28,12 @@ class PasswordEntryTest {
         assertEquals("", makeEntry("\nblubb").password)
         assertEquals("", makeEntry("\n").password)
         assertEquals("", makeEntry("").password)
+        for (field in PasswordEntry.PASSWORD_FIELDS) {
+            assertEquals("fooooo", makeEntry("\n$field fooooo").password)
+            assertEquals("fooooo", makeEntry("\n${field.toUpperCase()} fooooo").password)
+            assertEquals("fooooo", makeEntry("GOPASS-SECRET-1.0\n$field fooooo").password)
+            assertEquals("fooooo", makeEntry("someFirstLine\nUsername: bar\n$field fooooo").password)
+        }
     }
 
     @Test fun testGetExtraContent() {
@@ -37,6 +43,9 @@ class PasswordEntryTest {
         assertEquals("", makeEntry("fooooo").extraContent)
         assertEquals("blubb\n", makeEntry("\nblubb\n").extraContent)
         assertEquals("blubb", makeEntry("\nblubb").extraContent)
+        assertEquals("blubb", makeEntry("blubb\npassword: foo").extraContent)
+        assertEquals("blubb", makeEntry("password: foo\nblubb").extraContent)
+        assertEquals("blubb\nusername: bar", makeEntry("blubb\npassword: foo\nusername: bar").extraContent)
         assertEquals("", makeEntry("\n").extraContent)
         assertEquals("", makeEntry("").extraContent)
     }