diff options
Diffstat (limited to 'cram.c')
| -rw-r--r-- | cram.c | 10 |
1 files changed, 8 insertions, 2 deletions
@@ -60,7 +60,7 @@ static void hmac_md5 (unsigned char *password, size_t pass_len, MD5Final (response, &ctx); } -int do_cram_md5 (int sock, char *command, struct query *ctl) +int do_cram_md5 (int sock, char *command, struct query *ctl, char *strip) /* authenticate as per RFC2195 */ { int result; @@ -69,6 +69,7 @@ int do_cram_md5 (int sock, char *command, struct query *ctl) unsigned char msg_id[768]; unsigned char response[16]; unsigned char reply[1024]; + unsigned char *respdata; gen_send (sock, "%s CRAM-MD5", command); @@ -84,7 +85,12 @@ int do_cram_md5 (int sock, char *command, struct query *ctl) return result; } - len = from64tobits (msg_id, buf1); + /* caller may specify a response prefix we should strip if present */ + respdata = buf1; + if (strncmp(buf1, strip, strlen(strip)) == 0) + respdata += strlen(strip); + len = from64tobits (msg_id, respdata); + if (len < 0) { report (stderr, _("could not decode BASE64 challenge\n")); return PS_AUTHFAIL; |