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Signed-off-by: David Mulder <[email protected]>
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msal_example |
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all: | ||
gcc -o msal_example msal_example.c -I../target/debug/include -L../target/debug -lmsal | ||
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run: | ||
LD_LIBRARY_PATH=../target/debug ./msal_example |
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/* | ||
Unix Azure Entra ID implementation | ||
Copyright (C) David Mulder <[email protected]> 2024 | ||
This program is free software: you can redistribute it and/or modify | ||
it under the terms of the GNU Lesser General Public License as published by | ||
the Free Software Foundation, either version 3 of the License, or | ||
(at your option) any later version. | ||
This program is distributed in the hope that it will be useful, | ||
but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
GNU Lesser General Public License for more details. | ||
You should have received a copy of the GNU Lesser General Public License | ||
along with this program. If not, see <https://www.gnu.org/licenses/>. | ||
*/ | ||
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#include <stdio.h> | ||
#include <msal.h> | ||
#include <string.h> | ||
#include <unistd.h> | ||
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void strip_newline(char *str) { | ||
int len = strlen(str); | ||
if (str[len-1] == '\n') { | ||
str[len-1] = '\0'; | ||
} | ||
} | ||
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int main() { | ||
BoxedDynTpm *tpm = NULL; | ||
BrokerClientApplication *client = NULL; | ||
LoadableMachineKey *loadable_machine_key = NULL; | ||
MachineKey *machine_key = NULL; | ||
EnrollAttrs *attrs = NULL; | ||
MFAAuthContinue *flow = NULL; | ||
UserToken *token = NULL; | ||
LoadableMsOapxbcRsaKey *transport_key = NULL; | ||
LoadableIdentityKey *cert_key = NULL; | ||
MSAL_ERROR err; | ||
char* auth_value = NULL; | ||
char *domain = NULL; | ||
size_t len; | ||
char *username = NULL; | ||
char *password = NULL; | ||
char *msg = NULL; | ||
char *mfa_method = NULL; | ||
char *device_id = NULL; | ||
bool user_exists; | ||
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err = tpm_init(NULL, &tpm); | ||
if (err != SUCCESS) { | ||
printf("Failed to initialize tpm!\n"); | ||
goto OUT; | ||
} | ||
auth_value_generate(&auth_value); | ||
printf("auth_value: %s\n", auth_value); | ||
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err = tpm_machine_key_create(tpm, auth_value, &loadable_machine_key); | ||
if (err != SUCCESS) { | ||
printf("Failed to create loadable machine key!\n"); | ||
goto OUT; | ||
} | ||
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err = tpm_machine_key_load(tpm, | ||
auth_value, | ||
loadable_machine_key, | ||
&machine_key); | ||
if (err != SUCCESS) { | ||
printf("Failed to load machine key!\n"); | ||
goto OUT; | ||
} | ||
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err = broker_init(NULL, NULL, NULL, &client); | ||
if (err != SUCCESS) { | ||
printf("Failed to initialize the broker!\n"); | ||
goto OUT; | ||
} | ||
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printf("Enter a domain name: "); | ||
getline(&domain, &len, stdin); | ||
strip_newline(domain); | ||
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printf("Please enter your EntraID username: "); | ||
getline(&username, &len, stdin); | ||
strip_newline(username); | ||
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err = broker_check_user_exists(client, username, &user_exists); | ||
if (err != SUCCESS) { | ||
printf("Failed to check if the user exists!\n"); | ||
goto OUT; | ||
} | ||
if (user_exists) { | ||
printf("User %s exists!\n", username); | ||
} else { | ||
printf("User %s does not exist!\n", username); | ||
goto OUT; | ||
} | ||
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password = getpass("Password: "); | ||
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err = broker_initiate_acquire_token_by_mfa_flow_for_device_enrollment(client, | ||
username, | ||
password, | ||
&flow); | ||
if (err != SUCCESS) { | ||
printf("Failed to initiate an mfa token acquire!\n"); | ||
goto OUT; | ||
} | ||
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err = mfa_auth_continue_msg(flow, &msg); | ||
if (err != SUCCESS) { | ||
printf("Failed to fetch MFA auth message!\n"); | ||
goto OUT; | ||
} | ||
printf("%s", msg); | ||
fflush(stdout); | ||
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err = mfa_auth_continue_mfa_method(flow, &mfa_method); | ||
if (err != SUCCESS) { | ||
printf("Failed to fetch MFA method!\n"); | ||
goto OUT; | ||
} | ||
if (strcmp(mfa_method, "PhoneAppOTP") == 0 | ||
|| strcmp(mfa_method, "OneWaySMS") == 0 | ||
|| strcmp(mfa_method, "ConsolidatedTelephony") == 0) { | ||
char *otp = getpass(""); | ||
err = broker_acquire_token_by_mfa_flow(client, | ||
username, | ||
otp, | ||
0, | ||
flow, | ||
&token); | ||
if (err != SUCCESS) { | ||
printf("Failed to authenticate with otp!\n"); | ||
free(otp); | ||
goto OUT; | ||
} | ||
free(otp); | ||
} else { | ||
int polling_interval = mfa_auth_continue_polling_interval(flow); | ||
int max_poll_attempts = mfa_auth_continue_max_poll_attempts(flow); | ||
for (int i = 0; i < max_poll_attempts; i++) { | ||
err = broker_acquire_token_by_mfa_flow(client, | ||
username, | ||
NULL, | ||
i, | ||
flow, | ||
&token); | ||
if (err == MFA_POLL_CONTINUE) { | ||
sleep(polling_interval/1000); | ||
} else { | ||
printf("Failed to authenticate when polling!\n"); | ||
break; | ||
} | ||
} | ||
} | ||
printf("Authentication was successful!\n"); | ||
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err = enroll_attrs_init(domain, | ||
"msal_example_c", | ||
NULL, | ||
0, | ||
NULL, | ||
&attrs); | ||
if (err != SUCCESS) { | ||
printf("Failed to create enrollment attributes!\n"); | ||
} | ||
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err = broker_enroll_device(client, | ||
token, | ||
attrs, | ||
tpm, | ||
machine_key, | ||
&transport_key, | ||
&cert_key, | ||
&device_id); | ||
if (err != SUCCESS) { | ||
printf("Failed to enroll the device!\n"); | ||
goto OUT; | ||
} | ||
printf("Enrolled with device id: %s\n", device_id); | ||
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OUT: | ||
user_token_free(token); | ||
mfa_auth_continue_free(flow); | ||
string_free(auth_value); | ||
loadable_machine_key_free(loadable_machine_key); | ||
machine_key_free(machine_key); | ||
broker_free(client); | ||
tpm_free(tpm); | ||
free(username); | ||
free(domain); | ||
free(password); | ||
string_free(msg); | ||
string_free(mfa_method); | ||
string_free(device_id); | ||
loadable_ms_oapxbc_rsa_key_free(transport_key); | ||
loadable_identity_key_free(cert_key); | ||
} |