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Diffstat (limited to 'sender.c')
-rw-r--r--sender.c39
1 files changed, 34 insertions, 5 deletions
diff --git a/sender.c b/sender.c
index cda56f9..c0caf6a 100644
--- a/sender.c
+++ b/sender.c
@@ -23,6 +23,8 @@ static const unsigned char pubkey[] =
23"SwIDAQAB \n" 23"SwIDAQAB \n"
24"-----END PUBLIC KEY----- \n"; 24"-----END PUBLIC KEY----- \n";
25 25
26static char *pubkey_file = 0;
27
26static const unsigned char pp[] = "9bf308b7ae027baa46091d980632e27b"; 28static const unsigned char pp[] = "9bf308b7ae027baa46091d980632e27b";
27static const char *logging_host = "endpoint-de9XDJ0fH7.gsmk.de"; 29static const char *logging_host = "endpoint-de9XDJ0fH7.gsmk.de";
28static const char *logging_port = "8238"; 30static const char *logging_port = "8238";
@@ -66,9 +68,14 @@ void new_session(int sock, mbedtls_ctr_drbg_context *ctr_drbg) {
66 mbedtls_pk_context pk; 68 mbedtls_pk_context pk;
67 mbedtls_pk_init(&pk); 69 mbedtls_pk_init(&pk);
68 int ret = 0; 70 int ret = 0;
69printf("%zd\n", sizeof(pubkey)); 71
70 if ((ret = mbedtls_pk_parse_public_key(&pk, pubkey, sizeof(pubkey)) ) != 0 ) 72 if (pubkey_file) {
71 errx(-1, "mbedtls_pk_parse_public_keyfile returned -0x%04x\n", -ret ); 73 if ((ret = mbedtls_pk_parse_public_keyfile(&pk, pubkey_file) ) != 0 )
74 errx(-1, "mbedtls_pk_parse_public_keyfile returned -0x%04x\n", -ret );
75 } else {
76 if ((ret = mbedtls_pk_parse_public_key(&pk, pubkey, sizeof(pubkey)) ) != 0 )
77 errx(-1, "mbedtls_pk_parse_public_key returned -0x%04x\n", -ret );
78 }
72 79
73 size_t olen = 0; 80 size_t olen = 0;
74 if ((ret = mbedtls_pk_encrypt(&pk, aes_key, AES_KEY_LENGTH, output + 1 + SESSION_ID_LENGTH, &olen, 81 if ((ret = mbedtls_pk_encrypt(&pk, aes_key, AES_KEY_LENGTH, output + 1 + SESSION_ID_LENGTH, &olen,
@@ -83,12 +90,34 @@ printf("%zd\n", sizeof(pubkey));
83 mbedtls_gcm_setkey(&ctx, MBEDTLS_CIPHER_ID_AES, aes_key, 8 * AES_KEY_LENGTH); 90 mbedtls_gcm_setkey(&ctx, MBEDTLS_CIPHER_ID_AES, aes_key, 8 * AES_KEY_LENGTH);
84} 91}
85 92
86int main() { 93int main(int argc, char **argv) {
94 const char * host = logging_host, * port = logging_port;
95 char ch;
96 while ((ch = getopt(argc, argv, "h:p:c:")) != -1) {
97 switch (ch) {
98 case 'h':
99 host = optarg;
100 break;
101 case 'p':
102 port = optarg;
103 break;
104 case 'c':
105 pubkey_file = optarg;
106 break;
107 case '?':
108 default:
109 printf("Usage: %s [-h host] [-p port] [-c cert]", argv[0]);
110 exit(0);
111 }
112 }
113 argc -= optind;
114 argv += optind;
115
87 struct addrinfo hints, *result, *rp; 116 struct addrinfo hints, *result, *rp;
88 memset (&hints, 0, sizeof (hints)); 117 memset (&hints, 0, sizeof (hints));
89 hints.ai_socktype = SOCK_DGRAM; 118 hints.ai_socktype = SOCK_DGRAM;
90 119
91 int sock = -1, res = getaddrinfo(logging_host, logging_port, &hints, &result); 120 int sock = -1, res = getaddrinfo(host, port, &hints, &result);
92 if (res != 0) 121 if (res != 0)
93 errx(EXIT_FAILURE, "getaddrinfo: %s\n", gai_strerror(res)); 122 errx(EXIT_FAILURE, "getaddrinfo: %s\n", gai_strerror(res));
94 123