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/*
* Copyright 2015-2018 Yubico AB
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <string.h>
#include <stdint.h>
#include <stdio.h>
#include <errno.h>
#include <limits.h>
#include "yubihsm.h"
#include "internal.h"
#include "debug_lib.h"
#ifdef __WIN32
#include <winsock.h>
#else
#include <arpa/inet.h>
#endif
#define STATUS_STR "status="
#define VERSION_STR "version="
#define PID_STR "pid="
#define ADDRESS_STR "address="
#define PORT_STR "port="
#ifdef _MSVC
#define strtok_r strtok_s
#endif
void dump_hex(FILE *file, const uint8_t *ptr, uint16_t len) {
uint32_t i;
for (i = 0; i < len; i++) {
if (i && !(i % 8)) {
fprintf(file, " ");
}
fprintf(file, "%02x", ptr[i]);
}
}
void dump_msg(FILE *file, const Msg *msg) {
fprintf(file, "SEND >> (03 + %04d) %02x %04x ", ntohs(msg->st.len),
msg->st.cmd, ntohs(msg->st.len));
dump_hex(file, msg->st.data, ntohs(msg->st.len));
fprintf(file, "\n");
}
void dump_response(FILE *file, const Msg *msg) {
fprintf(file, "RECV << (03 + %04d) %02x %04x ", ntohs(msg->st.len),
msg->st.cmd, ntohs(msg->st.len));
dump_hex(file, msg->st.data, ntohs(msg->st.len));
fprintf(file, " \n");
}
void parse_status_data(char *data, yh_connector *connector) {
char *saveptr = NULL;
char *str = NULL;
while ((str = strtok_r(str ? NULL : data, "\n", &saveptr))) {
if (strncmp(str, STATUS_STR, strlen(STATUS_STR)) == 0) {
if (strcmp(str + strlen(STATUS_STR), "OK") == 0) {
connector->has_device = true;
} else {
connector->has_device = false;
}
} else if (strncmp(str, VERSION_STR, strlen(VERSION_STR)) == 0) {
unsigned long v_maj = 0;
unsigned long v_min = 0;
unsigned long v_pat = 0;
str = str + strlen(VERSION_STR);
if (sscanf(str, "%lu.%lu.%lu", &v_maj, &v_min, &v_pat) <= 3) {
DBG_ERR("Unable to parse version string");
continue;
}
connector->version_major = v_maj;
connector->version_minor = v_min;
connector->version_patch = v_pat;
} else if (strncmp(str, PID_STR, strlen(PID_STR)) == 0) {
char *endptr;
unsigned long pid;
str = str + strlen(PID_STR);
errno = 0;
pid = strtoul(str, &endptr, 0);
if ((errno == ERANGE && pid == ULONG_MAX) || (errno != 0 && pid == 0)) {
continue;
}
if (endptr == str || pid == 0) {
continue;
}
connector->pid = pid;
} else if (strncmp(str, ADDRESS_STR, strlen(ADDRESS_STR)) == 0) {
strncpy(connector->address, str + strlen(ADDRESS_STR),
sizeof(connector->address) - 1);
} else if (strncmp(str, PORT_STR, strlen(PORT_STR)) == 0) {
char *endptr;
unsigned long port;
str = str + strlen(PORT_STR);
errno = 0;
port = strtoul(str, &endptr, 0);
if ((errno == ERANGE && port == ULONG_MAX) || (errno != 0 && port == 0)) {
continue;
}
if (endptr == str || port == 0) {
continue;
}
connector->port = port;
}
}
DBG_INFO("response from connector");
DBG_INFO("has device: %s", connector->has_device == true ? "yes" : "no");
DBG_INFO("version: %d.%d.%d", connector->version_major,
connector->version_minor, connector->version_patch);
DBG_INFO("pid: %u", connector->pid);
DBG_INFO("address: %s", connector->address);
DBG_INFO("port: %u", connector->port);
return;
}
bool parse_usb_url(const char *url, unsigned long *serial) {
if (strncmp(url, YH_USB_URL_SCHEME, strlen(YH_USB_URL_SCHEME)) == 0) {
url += strlen(YH_USB_URL_SCHEME);
char *copy = strdup(url);
char *str = NULL;
char *saveptr = NULL;
// if we don't find a serial we still want to return serial 0
*serial = 0;
while ((str = strtok_r(str ? NULL : copy, "&", &saveptr))) {
if (strncmp(str, "serial=", strlen("serial=")) == 0) {
char *endptr;
str += strlen("serial=");
errno = 0;
*serial = strtoul(str, &endptr, 10);
if ((errno == ERANGE && *serial == ULONG_MAX) || endptr == str ||
*endptr != '\0' || (errno != 0 && *serial == 0)) {
*serial = 0;
DBG_ERR("Failed to parse serial argument: '%s'.", str);
free(copy);
return false;
}
} else {
DBG_INFO("Unknown USB option '%s'.", str);
}
}
DBG_INFO("USB url parsed with serial decimal %lu.", *serial);
free(copy);
return true;
}
return false;
}
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