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 rc;
unsigned int i = 0;
if(name == NULL || instruction == NULL) {
return SSH_ERROR;
}
if(num_prompts > 0 && (prompts == NULL || echo == NULL)) {
return SSH_ERROR;
}
rc = ssh_buffer_pack(msg->session->out_buffer,
"bsssd",
SSH2_MSG_USERAUTH_INFO_REQUEST,
name,
instruction,
"", /* language tag */
num_prompts);
if (rc != SSH_OK){
ssh_set_error_oom(msg->session);
return SSH_ERROR;
}
for(i = 0; i < num_prompts; i++) {
rc = ssh_buffer_pack(msg->session->out_buffer,
"sb",
prompts[i],
echo[1] ? 1 : 0);
if (rc != SSH_OK){
ssh_set_error_oom(msg->session);
return SSH_ERROR;
}
}
rc = packet_send(msg->session);
/* fill in the kbdint structure */
if (msg->session->kbdint == NULL) {
SSH_LOG(SSH_LOG_PROTOCOL, "Warning: Got a "
"keyboard-interactive response but it "
"seems we didn't send the request.");
msg->session->kbdint = ssh_kbdint_new();
if (msg->session->kbdint == NULL) {
ssh_set_error_oom(msg->session);
return SSH_ERROR;
}
} else {
ssh_kbdint_clean(msg->session->kbdint);
}
msg->session->kbdint->name = strdup(name);
if(msg->session->kbdint->name == NULL) {
ssh_set_error_oom(msg->session);
ssh_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);
ssh_kbdint_free(msg->session->kbdint);
msg->session->kbdint = NULL;
return SSH_PACKET_USED;
}
msg->session->kbdint->nprompts = num_prompts;
if(num_prompts > 0) {
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);
ssh_kbdint_free(msg->session->kbdint);
msg->session->kbdint = NULL;
return SSH_ERROR;
}
msg->session->kbdint->echo = malloc(num_prompts * sizeof(unsigned char));
if (msg->session->kbdint->echo == NULL) {
ssh_set_error_oom(msg->session);
ssh_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;
ssh_kbdint_free(msg->session->kbdint);
msg->session->kbdint = NULL;
return SSH_PACKET_USED;
}
}
} else {
msg->session->kbdint->prompts = NULL;
msg->session->kbdint->echo = NULL;
}
return rc;
}
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 (tmp == NULL) {
return SSH_ERROR;
}
r = buffer_add_ssh_string(msg->session->out_buffer, tmp);
ssh_string_free(tmp);
if (r < 0) {
return SSH_ERROR;
}
/* instruction */
tmp = ssh_string_from_char(instruction);
if (tmp == NULL) {
return SSH_ERROR;
}
r = buffer_add_ssh_string(msg->session->out_buffer, tmp);
ssh_string_free(tmp);
if (r < 0) {
return SSH_ERROR;
}
/* language tag */
tmp = ssh_string_from_char("");
if (tmp == NULL) {
return SSH_ERROR;
}
r = buffer_add_ssh_string(msg->session->out_buffer, tmp);
ssh_string_free(tmp);
if (r < 0) {
return SSH_ERROR;
}
/* 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 (tmp == NULL) {
return SSH_ERROR;
}
r = buffer_add_ssh_string(msg->session->out_buffer, tmp);
ssh_string_free(tmp);
if (r < 0) {
return SSH_ERROR;
}
/* 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(SSH_LOG_PROTOCOL, "Warning: Got a "
"keyboard-interactive response but it "
"seems we didn't send the request.");
msg->session->kbdint = ssh_kbdint_new();
if (msg->session->kbdint == NULL) {
ssh_set_error_oom(msg->session);
return SSH_ERROR;
}
} else {
ssh_kbdint_clean(msg->session->kbdint);
}
msg->session->kbdint->name = strdup(name);
if(msg->session->kbdint->name == NULL) {
ssh_set_error_oom(msg->session);
ssh_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);
ssh_kbdint_free(msg->session->kbdint);
msg->session->kbdint = NULL;
return SSH_PACKET_USED;
}
msg->session->kbdint->nprompts = num_prompts;
if(num_prompts > 0) {
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);
ssh_kbdint_free(msg->session->kbdint);
msg->session->kbdint = NULL;
return SSH_ERROR;
}
msg->session->kbdint->echo = malloc(num_prompts * sizeof(unsigned char));
if (msg->session->kbdint->echo == NULL) {
ssh_set_error_oom(msg->session);
ssh_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;
ssh_kbdint_free(msg->session->kbdint);
msg->session->kbdint = NULL;
return SSH_PACKET_USED;
}
}
} else {
msg->session->kbdint->prompts = NULL;
msg->session->kbdint->echo = NULL;
}
return r;
}
