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; }