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#include <string.h>
#include <base64/base64.h>
#include <iobuf/iobuf.h>
#include <msg/msg.h>
#include <str/str.h>
#include "sasl.h"
#include "v2client.h"
int sasl_auth_init(struct sasl_auth* sa)
{
if (sa->prefix == 0)
sa->prefix = "";
if (sa->suffix == 0)
sa->suffix = "\r\n";
if (sa->in == 0)
sa->in = &inbuf;
if (sa->out == 0)
sa->out = &outbuf;
return sasl_init(&sa->state);
}
int sasl_auth_caps(str* caps)
{
const struct sasl_mechanism* smech;
if (!sasl_mechanisms)
return 0;
if (!str_truncate(caps, 0) ||
!str_copys(caps, "AUTH"))
return -1;
for (smech = sasl_mechanisms; smech != 0; smech = smech->next)
if (!str_catc(caps, ' ') || !str_cats(caps, smech->name))
return -1;
return 1;
}
int sasl_auth2(struct sasl_auth* sa,
const char* mechanism,
const char* init_response)
{
str challenge = {0,0,0};
str challenge64 = {0,0,0};
str response = {0,0,0};
str response64 = {0,0,0};
int i;
str* iresponsestr;
if (init_response != 0) {
if (!str_truncate(&response, 0))
return -1;
if (!base64_decode_line(init_response, &response)) {
msg3("SASL AUTH ", mechanism, " failed: bad response");
str_free(&response);
return SASL_RESP_BAD;
}
iresponsestr = &response;
}
else
iresponsestr = 0;
i = sasl_start(&sa->state, mechanism, iresponsestr, &challenge);
while (i == SASL_CHALLENGE) {
i = -1;
if (str_truncate(&challenge64, 0)
&& base64_encode_line(challenge.s, challenge.len, &challenge64)
&& obuf_puts(sa->out, sa->prefix)
&& obuf_putstr(sa->out, &challenge64)
&& obuf_putsflush(sa->out, sa->suffix)
&& ibuf_getstr_crlf(sa->in, &response64)) {
if (response64.len == 0 || response64.s[0] == '*') {
msg3("SASL AUTH ", mechanism, " failed: aborted");
i = SASL_AUTH_FAILED;
}
else if (!str_truncate(&response, 0) ||
!base64_decode_line(response64.s, &response)) {
msg3("SASL AUTH ", mechanism, " failed: bad response");
i = SASL_RESP_BAD;
}
else
i = sa->state.response(&sa->state, &response, &challenge);
}
else if (ibuf_eof(sa->in))
i = SASL_RESP_EOF;
}
if (i == SASL_AUTH_OK) {
str_truncate(&response, 0);
str_copys(&response, "username=");
str_cats(&response, cvm_fact_username);
if (cvm_fact_sys_username != 0) {
str_cats(&response, " sys_username=");
str_cats(&response, cvm_fact_sys_username);
}
if (cvm_fact_domain != 0 && cvm_fact_domain[0] != 0) {
str_cats(&response, " domain=");
str_cats(&response, cvm_fact_domain);
}
msg4("SASL AUTH ", mechanism, " ", response.s);
cvm_client_setenv();
}
else
msg3("SASL AUTH ", mechanism, " failed");
str_free(&response);
str_free(&response64);
str_free(&challenge);
str_free(&challenge64);
return i;
}
int sasl_auth1(struct sasl_auth* sa, const str* arg)
{
str mechanism = {0,0,0};
int s;
if ((s = str_findfirst(arg, ' ')) != -1) {
if (!str_copyb(&mechanism, arg->s, s))
return -1;
while (arg->s[s] == ' ')
++s;
s = sasl_auth2(sa, mechanism.s, arg->s+s);
str_free(&mechanism);
}
else
s = sasl_auth2(sa, arg->s, 0);
return s;
}
const char* sasl_auth_msg(int* code)
{
int newcode;
const char* msg;
#define R(C,M) newcode=C; msg=M; break
switch (*code) {
case SASL_AUTH_FAILED: R(501,"Authentication failed.");
case SASL_NO_MECH: R(504,"Unrecognized authentication mechanism.");
case SASL_RESP_REQUIRED: R(535,"Response was required but not given.");
case SASL_RESP_NOTALLOWED: R(535,"Initial response not allowed.");
case SASL_RESP_BAD: R(501,"Could not decode the response.");
case SASL_RESP_EOF: R(535,"End of file reached.");
default: R(451,"Internal error.");
}
*code = newcode;
return msg;
}
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