[Asterisk-code-review] res_stir_shaken: Add inbound INVITE support. (asterisk[master])
Benjamin Keith Ford
asteriskteam at digium.com
Thu May 28 11:08:01 CDT 2020
Benjamin Keith Ford has uploaded this change for review. ( https://gerrit.asterisk.org/c/asterisk/+/14447 )
Change subject: res_stir_shaken: Add inbound INVITE support.
......................................................................
res_stir_shaken: Add inbound INVITE support.
Integrated STIR/SHAKEN support with incoming INVITES. Upon receiving an
INVITE, the Identity header is retrieved, parsing the message to verify
the signature. If any of the parsing fails,
AST_STIR_SHAKEN_VERIFY_NOT_PRESENT will be added to the channel for this
caller ID. If verification itself fails,
AST_STIR_SHAKEN_VERIFY_SIGNATURE_FAILED will be added. If anything in
the payload does not line up with the SIP signaling,
AST_STIR_SHAKEN_VERIFY_MISMATCH will be added. If all of the above steps
pass, then AST_STIR_SHAKEN_VERIFY_PASSED will be added, completing the
verification process.
A new config option has been added to the general section for
stir_shaken.conf. "signature_timeout" is the amount of time a signature
will be considered valid. If an INVITE is received and the amount of
time between when it was received and when it was signed is greater than
signature_timeout, verification will fail.
Some changes were also made to signing and verification. There was an
error where the whole JSON string was being signed rather than the
header combined with the payload. This has been changed to sign the
correct thing. Verification has been changed to do this as well, and the
unit tests have been updated to reflect these changes.
Change-Id: I855f857be3d1c63b64812ac35d9ce0534085b913
---
M include/asterisk/res_stir_shaken.h
M res/res_pjsip_stir_shaken.c
M res/res_stir_shaken.c
A res/res_stir_shaken.exports.in
M res/res_stir_shaken/general.c
M res/res_stir_shaken/general.h
6 files changed, 370 insertions(+), 34 deletions(-)
git pull ssh://gerrit.asterisk.org:29418/asterisk refs/changes/47/14447/1
diff --git a/include/asterisk/res_stir_shaken.h b/include/asterisk/res_stir_shaken.h
index 48bfa00..61a1c48 100644
--- a/include/asterisk/res_stir_shaken.h
+++ b/include/asterisk/res_stir_shaken.h
@@ -33,6 +33,31 @@
struct ast_json;
/*!
+ * \brief Retrieve the value for 'algorithm' from an ast_stir_shaken_payload
+ *
+ * \param payload The payload
+ *
+ * \retval The algorithm
+ */
+char *ast_stir_shaken_payload_algorithm(const struct ast_stir_shaken_payload *payload);
+
+/*!
+ * \brief Retrieve the value for 'public_key_url' from an ast_stir_shaken_payload
+ *
+ * \param payload The payload
+ *
+ * \retval The public key URL
+ */
+char *ast_stir_shaken_payload_public_key_url(const struct ast_stir_shaken_payload *payload);
+
+/*!
+ * \brief Retrieve the value for 'signature_timeout' from 'general' config object
+ *
+ * \retval The signature timeout
+ */
+unsigned int ast_stir_shaken_get_signature_timeout(void);
+
+/*!
* \brief Add a STIR/SHAKEN verification result to a channel
*
* \param chan The channel
diff --git a/res/res_pjsip_stir_shaken.c b/res/res_pjsip_stir_shaken.c
index 702383c..e367eea 100644
--- a/res/res_pjsip_stir_shaken.c
+++ b/res/res_pjsip_stir_shaken.c
@@ -3,7 +3,7 @@
*
* Copyright (C) 2020, Sangoma Technologies Corporation
*
- * Kevin Harwell <kharwell at digium.com>
+ * Ben Ford <bford at sangoma.com>
*
* See http://www.asterisk.org for more information about
* the Asterisk project. Please do not directly contact
@@ -18,22 +18,267 @@
/*** MODULEINFO
<depend>crypto</depend>
+ <depend>pjproject</depend>
+ <depend>res_pjsip</depend>
+ <depend>res_pjsip_session</depend>
+ <depend>res_stir_shaken</depend>
<support_level>core</support_level>
***/
#include "asterisk.h"
+#include "asterisk/res_pjsip.h"
+#include "asterisk/res_pjsip_session.h"
#include "asterisk/module.h"
#include "asterisk/res_stir_shaken.h"
+/*!
+ * \brief Decode a base 64 encoded string
+ *
+ * \note This function just makes it easier to base64decode since it
+ * calculates the length for you
+ *
+ * \param s The encoded string
+ *
+ * \retval NULL on failure
+ * \retval decoded string on success
+ */
+static char *decode_base64_string(const char *s)
+{
+ size_t encoded_len;
+ size_t decoded_len;
+ int padding = 0;
+ unsigned char *decoded_string;
+
+ if (ast_strlen_zero(s)) {
+ return NULL;
+ }
+
+ encoded_len = strlen(s);
+ if (encoded_len > 2 && s[encoded_len - 1] == '=') {
+ padding++;
+ if (s[encoded_len - 2] == '=') {
+ padding++;
+ }
+ }
+
+ decoded_len = (encoded_len / 4 * 3) - padding;
+ decoded_string = ast_calloc(1, decoded_len);
+ if (!decoded_string) {
+ return NULL;
+ }
+
+ ast_base64decode(decoded_string, s, decoded_len);
+
+ return (char *)decoded_string;
+}
+
+/*!
+ * \brief Get the attestation from the payload
+ *
+ * \param json_str The JSON string representation of the payload
+ *
+ * \retval Empty string on failure
+ * \retval The attestation on success
+ */
+static char *get_attestation_from_payload(const char *json_str)
+{
+ RAII_VAR(struct ast_json *, json, NULL, ast_json_free);
+ char *attestation;
+
+ json = ast_json_load_string(json_str, NULL);
+ attestation = (char *)ast_json_string_get(ast_json_object_get(json, "attest"));
+
+ if (!ast_strlen_zero(attestation)) {
+ return attestation;
+ }
+
+ return "";
+}
+
+/*!
+ * \brief Compare the caller ID from the INVITE with the one in the payload
+ *
+ * \param json_str The JSON string represntation of the payload
+ *
+ * \retval -1 on failure
+ * \retval 0 on success
+ */
+static int compare_caller_id(char *caller_id, const char *json_str)
+{
+ RAII_VAR(struct ast_json *, json, NULL, ast_json_free);
+ char *caller_id_other;
+
+ json = ast_json_load_string(json_str, NULL);
+ caller_id_other = (char *)ast_json_string_get(ast_json_object_get(
+ ast_json_object_get(json, "orig"), "tn"));
+
+ if (strcmp(caller_id, caller_id_other)) {
+ return -1;
+ }
+
+ return 0;
+}
+
+/*!
+ * \brief Compare the current timestamp with the one in the payload. If the difference
+ * is greater than the signature timeout, it's not valid anymore
+ *
+ * \param json_str The JSON string representation of the payload
+ *
+ * \retval -1 on failure
+ * \retval 0 on success
+ */
+static int compare_timestamp(const char *json_str)
+{
+ RAII_VAR(struct ast_json *, json, NULL, ast_json_free);
+ long int timestamp;
+ struct timeval now = ast_tvnow();
+
+ json = ast_json_load_string(json_str, NULL);
+ timestamp = ast_json_integer_get(ast_json_object_get(json, "iat"));
+
+ if (now.tv_sec - timestamp > ast_stir_shaken_get_signature_timeout()) {
+ return -1;
+ }
+
+ return 0;
+}
+
+/*!
+ * \brief Get a specific header value
+ *
+ * \param rdata The INVITE
+ * \param str The header to find
+ *
+ * \retval NULL on failure
+ * \retval The header value on success
+ */
+static char *get_value_from_header(pjsip_rx_data *rdata, const pj_str_t str)
+{
+ pjsip_generic_string_hdr *hdr;
+ pj_str_t hdr_val;
+
+ hdr = pjsip_msg_find_hdr_by_name(rdata->msg_info.msg,
+ &str, NULL);
+ if (!hdr) {
+ return NULL;
+ }
+
+ pj_strdup_with_null(rdata->tp_info.pool, &hdr_val, &hdr->hvalue);
+
+ return hdr_val.ptr;
+}
+
+/*!
+ * \internal
+ * \brief Session supplement callback on an incoming INVITE request
+ *
+ * When we receive an INVITE, check it for STIR/SHAKEN information and
+ * decide what to do from there
+ *
+ * \param session The session that has received an INVITE
+ * \param rdata The incoming INVITE
+ */
+static int stir_shaken_incoming_request(struct ast_sip_session *session, pjsip_rx_data *rdata)
+{
+ static const pj_str_t call_id_str = { "Call-ID", 7 };
+ static const pj_str_t identity_str = { "Identity", 8 };
+ char *caller_id_hdr_val;
+ char *identity_hdr_val;
+ char *encoded_val;
+ struct ast_channel *chan = session->channel;
+ char *caller_id = session->id.number.str;
+ RAII_VAR(char *, header, NULL, ast_free);
+ RAII_VAR(char *, payload, NULL, ast_free);
+ char *signature;
+ char *algorithm;
+ char *public_key_url;
+ char *attestation;
+ int mismatch = 0;
+ struct ast_stir_shaken_payload *ss_payload;
+
+ caller_id_hdr_val = get_value_from_header(rdata, call_id_str);
+ identity_hdr_val = get_value_from_header(rdata, identity_str);
+ if (ast_strlen_zero(caller_id_hdr_val) || ast_strlen_zero(identity_hdr_val)) {
+ ast_stir_shaken_add_verification(chan, caller_id, "", AST_STIR_SHAKEN_VERIFY_NOT_PRESENT);
+ return 0;
+ }
+
+ encoded_val = strtok_r(identity_hdr_val, ".", &identity_hdr_val);
+ header = decode_base64_string(encoded_val);
+ if (ast_strlen_zero(header)) {
+ ast_stir_shaken_add_verification(chan, caller_id, "", AST_STIR_SHAKEN_VERIFY_SIGNATURE_FAILED);
+ return 0;
+ }
+
+ encoded_val = strtok_r(identity_hdr_val, ".", &identity_hdr_val);
+ payload = decode_base64_string(encoded_val);
+ if (ast_strlen_zero(payload)) {
+ ast_stir_shaken_add_verification(chan, caller_id, "", AST_STIR_SHAKEN_VERIFY_SIGNATURE_FAILED);
+ return 0;
+ }
+
+ /* It's fine to leave the signature encoded */
+ signature = strtok_r(identity_hdr_val, ";", &identity_hdr_val);
+ if (ast_strlen_zero(signature)) {
+ ast_stir_shaken_add_verification(chan, caller_id, "", AST_STIR_SHAKEN_VERIFY_SIGNATURE_FAILED);
+ return 0;
+ }
+
+ /* Trim "info=<" to get public key URL */
+ strtok_r(identity_hdr_val, "<", &identity_hdr_val);
+ public_key_url = strtok_r(identity_hdr_val, ">", &identity_hdr_val);
+ if (ast_strlen_zero(public_key_url)) {
+ ast_stir_shaken_add_verification(chan, caller_id, "", AST_STIR_SHAKEN_VERIFY_SIGNATURE_FAILED);
+ return 0;
+ }
+
+ algorithm = strtok_r(identity_hdr_val, ";", &identity_hdr_val);
+ if (ast_strlen_zero(algorithm)) {
+ ast_stir_shaken_add_verification(chan, caller_id, "", AST_STIR_SHAKEN_VERIFY_SIGNATURE_FAILED);
+ return 0;
+ }
+
+ attestation = get_attestation_from_payload(payload);
+
+ ss_payload = ast_stir_shaken_verify(header, payload, signature, algorithm, public_key_url);
+ if (!ss_payload) {
+ ast_stir_shaken_add_verification(chan, caller_id, attestation, AST_STIR_SHAKEN_VERIFY_SIGNATURE_FAILED);
+ return 0;
+ }
+ ast_stir_shaken_payload_free(ss_payload);
+
+ mismatch |= compare_caller_id(caller_id_hdr_val, payload);
+ mismatch |= compare_timestamp(payload);
+
+ if (mismatch) {
+ ast_stir_shaken_add_verification(chan, caller_id, attestation, AST_STIR_SHAKEN_VERIFY_MISMATCH);
+ return 0;
+ }
+
+ ast_stir_shaken_add_verification(chan, caller_id, attestation, AST_STIR_SHAKEN_VERIFY_PASSED);
+
+ return 0;
+}
+
+static struct ast_sip_session_supplement stir_shaken_supplement = {
+ .method = "INVITE",
+ .priority = AST_SIP_SUPPLEMENT_PRIORITY_CHANNEL + 1, /* Run AFTER channel creation */
+ .incoming_request = stir_shaken_incoming_request,
+};
+
static int unload_module(void)
{
+ ast_sip_session_unregister_supplement(&stir_shaken_supplement);
return 0;
}
static int load_module(void)
{
+ ast_module_shutdown_ref(AST_MODULE_SELF);
+ ast_sip_session_register_supplement(&stir_shaken_supplement);
return AST_MODULE_LOAD_SUCCESS;
}
diff --git a/res/res_stir_shaken.c b/res/res_stir_shaken.c
index 86117cd..4b5536c 100644
--- a/res/res_stir_shaken.c
+++ b/res/res_stir_shaken.c
@@ -65,6 +65,9 @@
<configOption name="curl_timeout" default="2">
<synopsis>Maximum time to wait to CURL certificates</synopsis>
</configOption>
+ <configOption name="signature_timeout" default="15">
+ <synopsis>Amount of time a signature is valid for</synopsis>
+ </configOption>
</configObject>
<configObject name="store">
<synopsis>STIR/SHAKEN certificate store options</synopsis>
@@ -181,6 +184,21 @@
ast_free(payload);
}
+char *ast_stir_shaken_payload_algorithm(const struct ast_stir_shaken_payload *payload)
+{
+ return payload ? payload->algorithm : NULL;
+}
+
+char *ast_stir_shaken_payload_public_key_url(const struct ast_stir_shaken_payload *payload)
+{
+ return payload ? payload->public_key_url : NULL;
+}
+
+unsigned int ast_stir_shaken_get_signature_timeout(void)
+{
+ return ast_stir_shaken_signature_timeout(stir_shaken_general_get());
+}
+
/*!
* \brief Convert an ast_stir_shaken_verification_result to string representation
*
@@ -270,8 +288,8 @@
return -1;
}
- if (ast_strlen_zero(attestation)) {
- ast_log(LOG_ERROR, "No attestation to add STIR/SHAKEN verification to "
+ if (!attestation) {
+ ast_log(LOG_ERROR, "Attestation cannot be NULL to add STIR/SHAKEN verification to "
"channel %s\n", chan_name);
return -1;
}
@@ -593,8 +611,9 @@
EVP_PKEY *public_key;
char *filename;
int curl = 0;
- struct ast_json_error err;
RAII_VAR(char *, file_path, NULL, ast_free);
+ RAII_VAR(char *, combined_str, NULL, ast_free);
+ size_t combined_size;
if (ast_strlen_zero(header)) {
ast_log(LOG_ERROR, "'header' is required for STIR/SHAKEN verification\n");
@@ -697,7 +716,16 @@
}
}
- if (stir_shaken_verify_signature(payload, signature, public_key)) {
+ /* Combine the header and payload to get the original signed message: header.payload */
+ combined_size = strlen(header) + strlen(payload) + 2;
+ combined_str = ast_calloc(1, combined_size);
+ if (!combined_str) {
+ ast_log(LOG_ERROR, "Failed to allocate space for message to verify\n");
+ EVP_PKEY_free(public_key);
+ return NULL;
+ }
+ snprintf(combined_str, combined_size, "%s.%s", header, payload);
+ if (stir_shaken_verify_signature(combined_str, signature, public_key)) {
ast_log(LOG_ERROR, "Failed to verify signature\n");
EVP_PKEY_free(public_key);
return NULL;
@@ -712,14 +740,14 @@
return NULL;
}
- ret_payload->header = ast_json_load_string(header, &err);
+ ret_payload->header = ast_json_load_string(header, NULL);
if (!ret_payload->header) {
ast_log(LOG_ERROR, "Failed to create JSON from header\n");
ast_stir_shaken_payload_free(ret_payload);
return NULL;
}
- ret_payload->payload = ast_json_load_string(payload, &err);
+ ret_payload->payload = ast_json_load_string(payload, NULL);
if (!ret_payload->payload) {
ast_log(LOG_ERROR, "Failed to create JSON from payload\n");
ast_stir_shaken_payload_free(ret_payload);
@@ -1000,14 +1028,18 @@
struct ast_stir_shaken_payload *ast_stir_shaken_sign(struct ast_json *json)
{
- struct ast_stir_shaken_payload *payload;
+ struct ast_stir_shaken_payload *ss_payload;
unsigned char *signature;
const char *caller_id_num;
- char *json_str = NULL;
+ const char *header;
+ const char *payload;
+ struct ast_json *tmp_json;
+ char *msg = NULL;
+ size_t msg_len;
struct stir_shaken_certificate *cert = NULL;
- payload = stir_shaken_verify_json(json);
- if (!payload) {
+ ss_payload = stir_shaken_verify_json(json);
+ if (!ss_payload) {
return NULL;
}
@@ -1052,27 +1084,34 @@
goto cleanup;
}
- json_str = ast_json_dump_string(json);
- if (!json_str) {
- ast_log(LOG_ERROR, "Failed to convert JSON to string\n");
+ /* Get the header and the payload. Combine them to get the message to sign */
+ tmp_json = ast_json_object_get(json, "header");
+ header = ast_json_dump_string(tmp_json);
+ tmp_json = ast_json_object_get(json, "payload");
+ payload = ast_json_dump_string(tmp_json);
+ msg_len = strlen(header) + strlen(payload) + 2;
+ msg = ast_calloc(1, msg_len);
+ if (!msg) {
+ ast_log(LOG_ERROR, "Failed to allocate space for message to sign\n");
goto cleanup;
}
+ snprintf(msg, msg_len, "%s.%s", header, payload);
- signature = stir_shaken_sign(json_str, stir_shaken_certificate_get_private_key(cert));
+ signature = stir_shaken_sign(msg, stir_shaken_certificate_get_private_key(cert));
if (!signature) {
goto cleanup;
}
- payload->signature = signature;
+ ss_payload->signature = signature;
ao2_cleanup(cert);
- ast_json_free(json_str);
+ ast_free(msg);
- return payload;
+ return ss_payload;
cleanup:
ao2_cleanup(cert);
- ast_stir_shaken_payload_free(payload);
- ast_json_free(json_str);
+ ast_stir_shaken_payload_free(ss_payload);
+ ast_free(msg);
return NULL;
}
@@ -1424,12 +1463,13 @@
{
char *caller_id_number = "1234567";
char *public_key_url = "http://testing123";
- char *header = "{\"header\": \"placeholder\"}";
+ char *header;
+ char *payload;
+ struct ast_json *tmp_json;
char public_path[] = "/tmp/stir_shaken_public.XXXXXX";
char private_path[] = "/tmp/stir_shaken_public.XXXXXX";
RAII_VAR(char *, rm_on_exit_public, public_path, unlink);
RAII_VAR(char *, rm_on_exit_private, private_path, unlink);
- RAII_VAR(char *, json_str, NULL, ast_json_free);
RAII_VAR(struct ast_json *, json, NULL, ast_json_free);
RAII_VAR(struct ast_stir_shaken_payload *, signed_payload, NULL, ast_stir_shaken_payload_free);
RAII_VAR(struct ast_stir_shaken_payload *, returned_payload, NULL, ast_stir_shaken_payload_free);
@@ -1463,16 +1503,14 @@
return AST_TEST_FAIL;
}
- /* Get the message to use for verification */
- json_str = ast_json_dump_string(json);
- if (!json_str) {
- ast_test_status_update(test, "Failed to create string from JSON\n");
- test_stir_shaken_cleanup_cert(caller_id_number);
- return AST_TEST_FAIL;
- }
+ /* Get the header and payload for ast_stir_shaken_verify */
+ tmp_json = ast_json_object_get(json, "header");
+ header = ast_json_dump_string(tmp_json);
+ tmp_json = ast_json_object_get(json, "payload");
+ payload = ast_json_dump_string(tmp_json);
/* Test empty header parameter */
- returned_payload = ast_stir_shaken_verify("", json_str, (const char *)signed_payload->signature,
+ returned_payload = ast_stir_shaken_verify("", payload, (const char *)signed_payload->signature,
STIR_SHAKEN_ENCRYPTION_ALGORITHM, public_key_url);
if (returned_payload) {
ast_test_status_update(test, "Verified a signature with missing 'header'\n");
@@ -1490,7 +1528,7 @@
}
/* Test empty signature parameter */
- returned_payload = ast_stir_shaken_verify(header, json_str, "",
+ returned_payload = ast_stir_shaken_verify(header, payload, "",
STIR_SHAKEN_ENCRYPTION_ALGORITHM, public_key_url);
if (returned_payload) {
ast_test_status_update(test, "Verified a signature with missing 'signature'\n");
@@ -1499,7 +1537,7 @@
}
/* Test empty algorithm parameter */
- returned_payload = ast_stir_shaken_verify(header, json_str, (const char *)signed_payload->signature,
+ returned_payload = ast_stir_shaken_verify(header, payload, (const char *)signed_payload->signature,
"", public_key_url);
if (returned_payload) {
ast_test_status_update(test, "Verified a signature with missing 'algorithm'\n");
@@ -1508,7 +1546,7 @@
}
/* Test empty public key URL */
- returned_payload = ast_stir_shaken_verify(header, json_str, (const char *)signed_payload->signature,
+ returned_payload = ast_stir_shaken_verify(header, payload, (const char *)signed_payload->signature,
STIR_SHAKEN_ENCRYPTION_ALGORITHM, "");
if (returned_payload) {
ast_test_status_update(test, "Verified a signature with missing 'public key URL'\n");
@@ -1520,7 +1558,7 @@
test_stir_shaken_add_fake_astdb_entry(public_key_url, public_path);
/* Verify a valid signature */
- returned_payload = ast_stir_shaken_verify(header, json_str, (const char *)signed_payload->signature,
+ returned_payload = ast_stir_shaken_verify(header, payload, (const char *)signed_payload->signature,
STIR_SHAKEN_ENCRYPTION_ALGORITHM, public_key_url);
if (!returned_payload) {
ast_test_status_update(test, "Failed to verify a valid signature\n");
diff --git a/res/res_stir_shaken.exports.in b/res/res_stir_shaken.exports.in
new file mode 100644
index 0000000..10d214f
--- /dev/null
+++ b/res/res_stir_shaken.exports.in
@@ -0,0 +1,6 @@
+{
+ global:
+ LINKER_SYMBOL_PREFIXast_stir_*;
+ local:
+ *;
+};
diff --git a/res/res_stir_shaken/general.c b/res/res_stir_shaken/general.c
index edf8f85..d241082 100644
--- a/res/res_stir_shaken/general.c
+++ b/res/res_stir_shaken/general.c
@@ -31,6 +31,7 @@
#define DEFAULT_CA_PATH ""
#define DEFAULT_CACHE_MAX_SIZE 1000
#define DEFAULT_CURL_TIMEOUT 2
+#define DEFAULT_SIGNATURE_TIMEOUT 15
struct stir_shaken_general {
SORCERY_OBJECT(details);
@@ -44,6 +45,8 @@
unsigned int cache_max_size;
/*! Maximum time to wait to CURL certificates */
unsigned int curl_timeout;
+ /*! Amount of time a signature is valid for */
+ unsigned int signature_timeout;
};
static struct stir_shaken_general *default_config = NULL;
@@ -86,6 +89,11 @@
return cfg ? cfg->curl_timeout : DEFAULT_CURL_TIMEOUT;
}
+unsigned int ast_stir_shaken_signature_timeout(const struct stir_shaken_general *cfg)
+{
+ return cfg ? cfg->signature_timeout : DEFAULT_SIGNATURE_TIMEOUT;
+}
+
static void stir_shaken_general_destructor(void *obj)
{
struct stir_shaken_general *cfg = obj;
@@ -261,6 +269,9 @@
ast_sorcery_object_field_register(sorcery, CONFIG_TYPE, "curl_timeout",
__stringify(DEFAULT_CURL_TIMEOUT), OPT_UINT_T, 0,
FLDSET(struct stir_shaken_general, curl_timeout));
+ ast_sorcery_object_field_register(sorcery, CONFIG_TYPE, "signature_timeout",
+ __stringify(DEFAULT_SIGNATURE_TIMEOUT), OPT_UINT_T, 0,
+ FLDSET(struct stir_shaken_general, signature_timeout));
if (ast_sorcery_instance_observer_add(sorcery, &stir_shaken_general_observer)) {
ast_log(LOG_ERROR, "stir/shaken - failed to register loaded observer for '%s' "
diff --git a/res/res_stir_shaken/general.h b/res/res_stir_shaken/general.h
index 357933b..3ea1d69 100644
--- a/res/res_stir_shaken/general.h
+++ b/res/res_stir_shaken/general.h
@@ -84,6 +84,17 @@
unsigned int ast_stir_shaken_curl_timeout(const struct stir_shaken_general *cfg);
/*!
+ * \brief Retrieve the 'signature_timeout' general configuration option value
+ *
+ * \note if a NULL configuration is given, then the default value is returned
+ *
+ * \param cfg A 'general' configuration object
+ *
+ * \retval The 'signature_timeout' value
+ */
+unsigned int ast_stir_shaken_signature_timeout(const struct stir_shaken_general *cfg);
+
+/*!
* \brief Load time initialization for the stir/shaken 'general' configuration
*
* \retval 0 on success, -1 on error
--
To view, visit https://gerrit.asterisk.org/c/asterisk/+/14447
To unsubscribe, or for help writing mail filters, visit https://gerrit.asterisk.org/settings
Gerrit-Project: asterisk
Gerrit-Branch: master
Gerrit-Change-Id: I855f857be3d1c63b64812ac35d9ce0534085b913
Gerrit-Change-Number: 14447
Gerrit-PatchSet: 1
Gerrit-Owner: Benjamin Keith Ford <bford at digium.com>
Gerrit-MessageType: newchange
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.digium.com/pipermail/asterisk-code-review/attachments/20200528/addc23a3/attachment-0001.html>
More information about the asterisk-code-review
mailing list