* 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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
- */
+ */
/* IMAP login/authentication code */
#define MD5_DIGEST_LEN 16
/* forward declarations */
-static void hmac_md5 (const char* password, char* challenge,
- unsigned char* response);
+static void hmac_md5 (const char *password, char *challenge,
+ unsigned char *response);
/* imap_auth_cram_md5: AUTH=CRAM-MD5 support. */
-imap_auth_res_t imap_auth_cram_md5 (IMAP_DATA* idata, const char* method)
+imap_auth_res_t imap_auth_cram_md5 (IMAP_DATA * idata, const char *method)
{
- char ibuf[LONG_STRING*2], obuf[LONG_STRING];
+ char ibuf[LONG_STRING * 2], obuf[LONG_STRING];
unsigned char hmac_response[MD5_DIGEST_LEN];
int len;
int rc;
do
rc = imap_cmd_step (idata);
while (rc == IMAP_CMD_CONTINUE);
-
- if (rc != IMAP_CMD_RESPOND)
- {
+
+ if (rc != IMAP_CMD_RESPOND) {
dprint (1, (debugfile, "Invalid response from server: %s\n", ibuf));
goto bail;
}
- if ((len = mutt_from_base64 (obuf, idata->cmd.buf + 2)) == -1)
- {
+ if ((len = mutt_from_base64 (obuf, idata->cmd.buf + 2)) == -1) {
dprint (1, (debugfile, "Error decoding base64 response.\n"));
goto bail;
}
hmac_md5 (idata->conn->account.pass, obuf, hmac_response);
/* dubious optimisation I saw elsewhere: make the whole string in one call */
snprintf (obuf, sizeof (obuf),
- "%s %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
- idata->conn->account.user,
- hmac_response[0], hmac_response[1], hmac_response[2], hmac_response[3],
- hmac_response[4], hmac_response[5], hmac_response[6], hmac_response[7],
- hmac_response[8], hmac_response[9], hmac_response[10], hmac_response[11],
- hmac_response[12], hmac_response[13], hmac_response[14], hmac_response[15]);
- dprint(2, (debugfile, "CRAM response: %s\n", obuf));
+ "%s %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
+ idata->conn->account.user,
+ hmac_response[0], hmac_response[1], hmac_response[2],
+ hmac_response[3], hmac_response[4], hmac_response[5],
+ hmac_response[6], hmac_response[7], hmac_response[8],
+ hmac_response[9], hmac_response[10], hmac_response[11],
+ hmac_response[12], hmac_response[13], hmac_response[14],
+ hmac_response[15]);
+ dprint (2, (debugfile, "CRAM response: %s\n", obuf));
/* XXX - ibuf must be long enough to store the base64 encoding of obuf,
* plus the additional debris
*/
-
- mutt_to_base64 ((unsigned char*) ibuf, (unsigned char*) obuf, strlen (obuf),
- sizeof (ibuf) - 2);
+
+ mutt_to_base64 ((unsigned char *) ibuf, (unsigned char *) obuf,
+ strlen (obuf), sizeof (ibuf) - 2);
safe_strcat (ibuf, sizeof (ibuf), "\r\n");
mutt_socket_write (idata->conn, ibuf);
rc = imap_cmd_step (idata);
while (rc == IMAP_CMD_CONTINUE);
- if (rc != IMAP_CMD_OK)
- {
+ if (rc != IMAP_CMD_OK) {
dprint (1, (debugfile, "Error receiving server response.\n"));
goto bail;
}
if (imap_code (idata->cmd.buf))
return IMAP_AUTH_SUCCESS;
- bail:
+bail:
mutt_error _("CRAM-MD5 authentication failed.");
mutt_sleep (2);
return IMAP_AUTH_FAILURE;
}
/* hmac_md5: produce CRAM-MD5 challenge response. */
-static void hmac_md5 (const char* password, char* challenge,
- unsigned char* response)
+static void hmac_md5 (const char *password, char *challenge,
+ unsigned char *response)
{
MD5_CTX ctx;
unsigned char ipad[MD5_BLOCK_LEN], opad[MD5_BLOCK_LEN];
- unsigned char secret[MD5_BLOCK_LEN+1];
+ unsigned char secret[MD5_BLOCK_LEN + 1];
unsigned char hash_passwd[MD5_DIGEST_LEN];
unsigned int secret_len, chal_len;
int i;
/* passwords longer than MD5_BLOCK_LEN bytes are substituted with their MD5
* digests */
- if (secret_len > MD5_BLOCK_LEN)
- {
+ if (secret_len > MD5_BLOCK_LEN) {
MD5Init (&ctx);
- MD5Update (&ctx, (unsigned char*) password, secret_len);
+ MD5Update (&ctx, (unsigned char *) password, secret_len);
MD5Final (hash_passwd, &ctx);
- strfcpy ((char*) secret, (char*) hash_passwd, MD5_DIGEST_LEN);
+ strfcpy ((char *) secret, (char *) hash_passwd, MD5_DIGEST_LEN);
secret_len = MD5_DIGEST_LEN;
}
else
memcpy (ipad, secret, secret_len);
memcpy (opad, secret, secret_len);
- for (i = 0; i < MD5_BLOCK_LEN; i++)
- {
+ for (i = 0; i < MD5_BLOCK_LEN; i++) {
ipad[i] ^= 0x36;
opad[i] ^= 0x5c;
}
/* inner hash: challenge and ipadded secret */
MD5Init (&ctx);
MD5Update (&ctx, ipad, MD5_BLOCK_LEN);
- MD5Update (&ctx, (unsigned char*) challenge, chal_len);
+ MD5Update (&ctx, (unsigned char *) challenge, chal_len);
MD5Final (response, &ctx);
/* outer hash: inner hash and opadded secret */