Add CURVE authentification support for dabInputZMQ

1 files changed, 107 insertions, 0 deletions

diff --git a/src/zmqinput-keygen.c b/src/zmqinput-keygen.c
new file mode 100644
index 0000000..0169837
--- /dev/null
+++ b/src/zmqinput-keygen.c
@@ -0,0 +1,107 @@
+/* Create a key file for the ZMQinput
+ * and save to file.
+ *
+ * Copyright (c) 2014 Matthias P. Braendli
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <zmq_utils.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <string.h>
+
+
+int main(int argc, char** argv)
+{
+    if (argc == 1) {
+        fprintf(stderr, "Generate a random key for dabInputZMQ and save it to two files.\n\n");
+        fprintf(stderr, "Usage: %s <name>\n", argv[0]);
+        return 1;
+    }
+
+    const char* keyname = argv[1];
+
+    if (strlen(keyname) > 2048) {
+        fprintf(stderr, "name too long\n");
+        return 1;
+    }
+
+    char pubkeyfile[strlen(keyname) + 10];
+    char seckeyfile[strlen(keyname) + 10];
+
+    sprintf(pubkeyfile, "%s.pub", keyname);
+    sprintf(seckeyfile, "%s.sec", keyname);
+
+    char public_key [41];
+    char secret_key [41];
+    int rc = zmq_curve_keypair(public_key, secret_key);
+    if (rc != 0) {
+        fprintf(stderr, "key generation failed\n");
+    }
+
+    int fdpub = creat(pubkeyfile, S_IRUSR | S_IWUSR);
+    if (fdpub < 0) {
+        perror("File creation failed");
+        return 1;
+    }
+
+    int fdsec = creat(seckeyfile, S_IRUSR | S_IWUSR);
+    if (fdsec < 0) {
+        perror("File creation failed");
+        return 1;
+    }
+
+    int r = write(fdpub, public_key, 41);
+
+    int ret = 0;
+
+    if (r < 0) {
+        perror("write failed");
+        ret = 1;
+    }
+    else if (r != 41) {
+        fprintf(stderr, "Not enough key data written to file\n");
+        ret = 1;
+    }
+
+    close(fdpub);
+
+    if (ret == 0) {
+        r = write(fdsec, secret_key, 41);
+
+        if (r < 0) {
+            perror("write failed");
+            ret = 1;
+        }
+        else if (r != 41) {
+            fprintf(stderr, "Not enough key data written to file\n");
+            ret = 1;
+        }
+    }
+
+    close(fdsec);
+
+    return ret;
+}
+