for crypto keys, also write an easy to share text file with its fingerprint and status

git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@11607 d7cf8633-e32d-0410-b094-e92efae38249

diff --git a/crypto.c b/crypto.c
index cb7b339d195ec76b98bbc36428e66d281740ce55..d0ac18306443dc291099fc0d49ef6b4c95868833 100644 (file)
--- a/crypto.c
+++ b/crypto.c
@@ -772,6 +772,34 @@ static void Crypto_BuildChallengeAppend(void)
        challenge_append_length = p - challenge_append;
 }
 
+static qboolean Crypto_SavePubKeyTextFile(int i)
+{
+       qfile_t *f;
+       char vabuf[1024];
+
+       if(!pubkeys_havepriv[i])
+               return false;
+       f = FS_SysOpen(va(vabuf, sizeof(vabuf), "%skey_%d-public-fp%s.txt", *fs_userdir ? fs_userdir : fs_basedir, i, sessionid.string), "w", false);
+       if(!f)
+               return false;
+
+       // we ignore errors for this file, as it's not necessary to have
+       FS_Printf(f, "ID-Fingerprint: %s\n", pubkeys_priv_fp64[i]);
+       FS_Printf(f, "ID-Is-Signed: %s\n", pubkeys_havesig[i] ? "yes" : "no");
+       FS_Printf(f, "ID-Is-For-Key: %s\n", pubkeys_fp64[i]);
+       FS_Printf(f, "\n");
+       FS_Printf(f, "This is a PUBLIC ID file for DarkPlaces.\n");
+       FS_Printf(f, "You are free to share this file or its contents.\n");
+       FS_Printf(f, "\n");
+       FS_Printf(f, "This file will be automatically generated again if deleted.\n");
+       FS_Printf(f, "\n");
+       FS_Printf(f, "However, NEVER share the accompanying SECRET ID file called\n");
+       FS_Printf(f, "key_%d.d0si%s, as doing so would compromise security!\n", i, sessionid.string);
+       FS_Close(f);
+
+       return true;
+}
+
 void Crypto_LoadKeys(void)
 {
        char buf[8192];
@@ -817,19 +845,9 @@ void Crypto_LoadKeys(void)
                                                if(qd0_blind_id_fingerprint64_public_id(pubkeys[i], pubkeys_priv_fp64[i], &len2)) // keeps final NUL
                                                {
                                                        D0_BOOL status = 0;
-                                                       qfile_t *f;
 
                                                        Con_Printf("Loaded private ID key_%d.d0si%s for key_%d.d0pk (public key fingerprint: %s)\n", i, sessionid.string, i, pubkeys_priv_fp64[i]);
 
-                                                       f = FS_SysOpen(va(vabuf, sizeof(vabuf), "%skey_%d-public-fp%s.txt", *fs_userdir ? fs_userdir : fs_basedir, i, sessionid.string), "w", false);
-                                                       if(f)
-                                                       {
-                                                               // we ignore errors for this file, as it's not necessary to have
-                                                               FS_Write(f, pubkeys_priv_fp64[i], FP64_SIZE);
-                                                               FS_Write(f, "\n", 1);
-                                                               FS_Close(f);
-                                                       }
-
                                                        // verify the key we just loaded (just in case)
                                                        if(qd0_blind_id_verify_private_id(pubkeys[i]) && qd0_blind_id_verify_public_id(pubkeys[i], &status))
                                                        {
@@ -841,6 +859,8 @@ void Crypto_LoadKeys(void)
                                                                        pubkeys_havesig[i] = true;
                                                                else
                                                                        Con_Printf("NOTE: this ID has not yet been signed!\n");
+
+                                                               Crypto_SavePubKeyTextFile(i);
                                                        }
                                                        else
                                                        {
@@ -1136,7 +1156,10 @@ static void Crypto_KeyGen_Finished(int code, size_t length_received, unsigned ch
        FS_Write(f, buf2, buf2size);
        FS_Close(f);
 
+       Crypto_SavePubKeyTextFile(keygen_i);
+
        Con_Printf("Saved to key_%d.d0si%s\n", keygen_i, sessionid.string);
+
        keygen_i = -1;
        SV_UnlockThreadMutex();
 }
@@ -1253,14 +1276,7 @@ static void Crypto_KeyGen_f(void)
                FS_Write(f, buf2, buf2size);
                FS_Close(f);
 
-               f = FS_SysOpen(va(vabuf, sizeof(vabuf), "%skey_%d-public-fp%s.txt", *fs_userdir ? fs_userdir : fs_basedir, keygen_i, sessionid.string), "w", false);
-               if(f)
-               {
-                       // we ignore errors for this file, as it's not necessary to have
-                       FS_Write(f, pubkeys_priv_fp64[keygen_i], FP64_SIZE);
-                       FS_Write(f, "\n", 1);
-                       FS_Close(f);
-               }
+               Crypto_SavePubKeyTextFile(keygen_i);
 
                Con_Printf("Saved unsigned key to key_%d.d0si%s\n", keygen_i, sessionid.string);
        }