1 files changed, 143 insertions, 0 deletions
diff --git a/comm/third_party/libotr/toolkit/otr_remac.c b/comm/third_party/libotr/toolkit/otr_remac.c
new file mode 100644
index 0000000000..1567eeb929
--- /dev/null
+++ b/comm/third_party/libotr/toolkit/otr_remac.c
@@ -0,0 +1,143 @@
+/*
+ *  Off-the-Record Messaging Toolkit
+ *  Copyright (C) 2004-2012  Ian Goldberg, Rob Smits, Chris Alexander,
+ *                           Nikita Borisov
+ *                           <otr@cypherpunks.ca>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of version 2 of the GNU General Public License as
+ *  published by the Free Software Foundation.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/* system headers */
+#include <stdio.h>
+#include <stdlib.h>
+
+/* libgcrypt headers */
+#include <gcrypt.h>
+
+/* toolkit headers */
+#include "parse.h"
+#include "sha1hmac.h"
+
+static void usage(const char *progname)
+{
+    fprintf(stderr, "Usage: %s mackey sender_instance receiver_instance "
+	"flags snd_keyid rcp_keyid pubkey counter encdata revealed_mackeys\n"
+"Make a new Data message, with the given pieces (note that the\n"
+"data part is already encrypted).  MAC it with the given mackey.\n"
+"mackey, pubkey, counter, encdata, and revealed_mackeys are given\n"
+"as strings of hex chars.  snd_keyid and rcp_keyid are decimal integers.\n",
+	progname);
+    exit(1);
+}
+
+int main(int argc, char **argv)
+{
+    unsigned char *mackey;
+    size_t mackeylen;
+    unsigned int snd_keyid, rcp_keyid;
+    int flags;
+    unsigned char version = 3;
+    unsigned int sender_instance;
+    unsigned int receiver_instance;
+    unsigned char *pubkey;
+    size_t pubkeylen;
+    gcry_mpi_t pubv;
+    unsigned char *ctr;
+    size_t ctrlen;
+    unsigned char *encdata;
+    size_t encdatalen;
+    unsigned char *mackeys;
+    size_t mackeyslen;
+    char *newdatamsg;
+
+    if (argc != 11) {
+	usage(argv[0]);
+    }
+
+    argv_to_buf(&mackey, &mackeylen, argv[1]);
+    if (!mackey) {
+	usage(argv[0]);
+    }
+
+    if (mackeylen != 20) {
+	fprintf(stderr, "The MAC key must be 40 hex chars long.\n");
+	usage(argv[0]);
+    }
+
+    if (sscanf(argv[2], "%u", &sender_instance) != 1) {
+	fprintf(stderr, "Unparseable sender_instance given.\n");
+	usage(argv[0]);
+    }
+
+    if (sscanf(argv[3], "%u", &receiver_instance) != 1) {
+	fprintf(stderr, "Unparseable receiver_instance given.\n");
+	usage(argv[0]);
+    }
+
+    if (sscanf(argv[4], "%d", &flags) != 1) {
+	fprintf(stderr, "Unparseable flags given.\n");
+	usage(argv[0]);
+    }
+
+    if (sscanf(argv[5], "%u", &snd_keyid) != 1) {
+	fprintf(stderr, "Unparseable snd_keyid given.\n");
+	usage(argv[0]);
+    }
+
+    if (sscanf(argv[6], "%u", &rcp_keyid) != 1) {
+	fprintf(stderr, "Unparseable rcp_keyid given.\n");
+	usage(argv[0]);
+    }
+
+    argv_to_buf(&pubkey, &pubkeylen, argv[7]);
+    if (!pubkey) {
+	usage(argv[0]);
+    }
+    gcry_mpi_scan(&pubv, GCRYMPI_FMT_USG, pubkey, pubkeylen, NULL);
+    free(pubkey);
+
+    argv_to_buf(&ctr, &ctrlen, argv[8]);
+    if (!ctr) {
+	usage(argv[0]);
+    }
+
+    if (ctrlen != 8) {
+	fprintf(stderr, "The counter must be 16 hex chars long.\n");
+	usage(argv[0]);
+    }
+
+    argv_to_buf(&encdata, &encdatalen, argv[9]);
+    if (!encdata) {
+	usage(argv[0]);
+    }
+
+    argv_to_buf(&mackeys, &mackeyslen, argv[10]);
+    if (!mackeys) {
+	usage(argv[0]);
+    }
+
+    newdatamsg = assemble_datamsg(mackey, version, sender_instance,
+	    receiver_instance, flags, snd_keyid, rcp_keyid, pubv, ctr, encdata,
+	    encdatalen, mackeys, mackeyslen);
+    printf("%s\n", newdatamsg);
+    free(newdatamsg);
+
+    free(mackey);
+    gcry_mpi_release(pubv);
+    free(ctr);
+    free(encdata);
+    free(mackeys);
+    fflush(stdout);
+    return 0;
+}