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authormilo <milo@r0ot.me>2011-02-08 00:40:18 +0100
committermilo <milo@r0ot.me>2011-02-10 14:39:20 +0100
commit3c0a4781e49a4912e191b20ea8ccaeb884eb9dcd (patch)
tree12da3549867512351a797bfa571f841b1d214708 /src/server.c
parent32e23a25da4e7d23bdede1cee4cadc6c80306c23 (diff)
downloadlibssh-3c0a4781e49a4912e191b20ea8ccaeb884eb9dcd.tar.gz
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Added the keyboard-interactive authentication method
Diffstat (limited to 'src/server.c')
-rw-r--r--src/server.c133
1 files changed, 133 insertions, 0 deletions
diff --git a/src/server.c b/src/server.c
index e4ecbe1e..86c4b84e 100644
--- a/src/server.c
+++ b/src/server.c
@@ -747,6 +747,14 @@ enum ssh_publickey_state_e ssh_message_auth_publickey_state(ssh_message msg){
return msg->auth_request.signature_state;
}
+int ssh_message_auth_kbdint_is_response(ssh_message msg) {
+ if (msg == NULL) {
+ return -1;
+ }
+
+ return msg->auth_request.kbdint_response != 0;
+}
+
int ssh_message_auth_set_methods(ssh_message msg, int methods) {
if (msg == NULL || msg->session == NULL) {
return -1;
@@ -757,6 +765,131 @@ int ssh_message_auth_set_methods(ssh_message msg, int methods) {
return 0;
}
+int ssh_message_auth_interactive_request(ssh_message msg, const char *name,
+ const char *instruction, unsigned int num_prompts,
+ const char **prompts, char *echo) {
+ int r;
+ unsigned int i = 0;
+ ssh_string tmp = NULL;
+
+ if(name == NULL || instruction == NULL) {
+ return SSH_ERROR;
+ }
+ if(num_prompts > 0 && (prompts == NULL || echo == NULL)) {
+ return SSH_ERROR;
+ }
+
+ if (buffer_add_u8(msg->session->out_buffer, SSH2_MSG_USERAUTH_INFO_REQUEST) < 0) {
+ return SSH_ERROR;
+ }
+
+ /* name */
+ tmp = ssh_string_from_char(name);
+ if (buffer_add_ssh_string(msg->session->out_buffer, tmp) < 0) {
+ return SSH_ERROR;
+ }
+ ssh_string_free(tmp); tmp = NULL;
+
+ /* instruction */
+ tmp = ssh_string_from_char(instruction);
+ if (buffer_add_ssh_string(msg->session->out_buffer, tmp) < 0) {
+ return SSH_ERROR;
+ }
+ ssh_string_free(tmp); tmp = NULL;
+
+ /* language tag */
+ tmp = ssh_string_from_char("");
+ if (buffer_add_ssh_string(msg->session->out_buffer, tmp) < 0) {
+ return SSH_ERROR;
+ }
+ ssh_string_free(tmp); tmp = NULL;
+
+ /* num prompts */
+ if (buffer_add_u32(msg->session->out_buffer, ntohl(num_prompts)) < 0) {
+ return SSH_ERROR;
+ }
+
+ for(i = 0; i < num_prompts; i++) {
+ /* prompt[i] */
+ tmp = ssh_string_from_char(prompts[i]);
+ if (buffer_add_ssh_string(msg->session->out_buffer, tmp) < 0) {
+ goto error;
+ }
+ ssh_string_free(tmp); tmp = NULL;
+
+ /* echo[i] */
+ if (buffer_add_u8(msg->session->out_buffer, echo[i]) < 0) {
+ return SSH_ERROR;
+ }
+ }
+
+ r = packet_send(msg->session);
+
+ /* fill in the kbdint structure */
+ if (msg->session->kbdint == NULL) {
+ ssh_log(msg->session, SSH_LOG_PROTOCOL, "Warning: Got a "
+ "keyboard-interactive response but it "
+ "seems we didn't send the request.");
+
+ msg->session->kbdint = kbdint_new();
+ if (msg->session->kbdint == NULL) {
+ ssh_set_error_oom(msg->session);
+
+ return SSH_ERROR;
+ }
+ } else {
+ kbdint_clean(msg->session->kbdint);
+ }
+
+ msg->session->kbdint->name = strdup(name);
+ if(msg->session->kbdint->name == NULL) {
+ ssh_set_error_oom(msg->session);
+ kbdint_free(msg->session->kbdint);
+ msg->session->kbdint = NULL;
+ return SSH_PACKET_USED;
+ }
+ msg->session->kbdint->instruction = strdup(instruction);
+ if(msg->session->kbdint->instruction == NULL) {
+ ssh_set_error_oom(msg->session);
+ kbdint_free(msg->session->kbdint);
+ msg->session->kbdint = NULL;
+ return SSH_PACKET_USED;
+ }
+
+ msg->session->kbdint->nprompts = num_prompts;
+ msg->session->kbdint->prompts = malloc(num_prompts * sizeof(char *));
+ if (msg->session->kbdint->prompts == NULL) {
+ msg->session->kbdint->nprompts = 0;
+ ssh_set_error_oom(msg->session);
+ kbdint_free(msg->session->kbdint);
+ msg->session->kbdint = NULL;
+ return SSH_ERROR;
+ }
+ msg->session->kbdint->echo = malloc(num_prompts * sizeof(char));
+ if (msg->session->kbdint->echo == NULL) {
+ ssh_set_error_oom(msg->session);
+ kbdint_free(msg->session->kbdint);
+ msg->session->kbdint = NULL;
+ return SSH_ERROR;
+ }
+ for (i = 0; i < num_prompts; i++) {
+ msg->session->kbdint->echo[i] = echo[i];
+ msg->session->kbdint->prompts[i] = strdup(prompts[i]);
+ if (msg->session->kbdint->prompts[i] == NULL) {
+ ssh_set_error_oom(msg->session);
+ msg->session->kbdint->nprompts = i;
+ kbdint_free(msg->session->kbdint);
+ msg->session->kbdint = NULL;
+ return SSH_PACKET_USED;
+ }
+ }
+
+ return r;
+error:
+ if(tmp) ssh_string_free(tmp);
+ return SSH_ERROR;
+}
+
int ssh_message_auth_reply_success(ssh_message msg, int partial) {
int r;