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MasterPassword/core/c/mpw-marshall-util.c

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//==============================================================================
// This file is part of Master Password.
// Copyright (c) 2011-2017, Maarten Billemont.
//
// Master Password is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Master Password is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You can find a copy of the GNU General Public License in the
// LICENSE file. Alternatively, see <http://www.gnu.org/licenses/>.
//==============================================================================
#include <string.h>
#include "mpw-marshall-util.h"
#include "mpw-util.h"
char *mpw_get_token(char **in, char *eol, char *delim) {
// Skip leading spaces.
for (; **in == ' '; ++*in);
// Find characters up to the first delim.
size_t len = strcspn( *in, delim );
char *token = len && len <= (size_t)(eol - *in)? strndup( *in, len ): NULL;
// Advance past the delimitor.
*in = min( eol, *in + len + 1 );
return token;
}
time_t mpw_mktime(
const char *time) {
struct tm tm = { .tm_isdst = -1, .tm_gmtoff = 0 };
if (time && sscanf( time, "%4d-%2d-%2dT%2d:%2d:%2dZ",
&tm.tm_year, &tm.tm_mon, &tm.tm_mday,
&tm.tm_hour, &tm.tm_min, &tm.tm_sec ) == 6) {
tm.tm_year -= 1900; // tm_year 0 = rfc3339 year 1900
tm.tm_mon -= 1; // tm_mon 0 = rfc3339 month 1
return mktime( &tm );
}
return false;
}
json_object *mpw_get_json_section(
json_object *obj, const char *section) {
json_object *json_value = obj;
char *sectionTokenizer = strdup( section ), *sectionToken = sectionTokenizer;
for (sectionToken = strtok( sectionToken, "." ); sectionToken; sectionToken = strtok( NULL, "." ))
if (!json_object_object_get_ex( json_value, sectionToken, &json_value ) || !json_value) {
trc( "While resolving: %s: Missing value for: %s\n", section, sectionToken );
json_value = NULL;
break;
}
free( sectionTokenizer );
return json_value;
}
const char *mpw_get_json_string(
json_object *obj, const char *section, const char *defaultValue) {
json_object *json_value = mpw_get_json_section( obj, section );
if (!json_value)
return defaultValue;
return json_object_get_string( json_value );
}
int32_t mpw_get_json_int(
json_object *obj, const char *section, int32_t defaultValue) {
json_object *json_value = mpw_get_json_section( obj, section );
if (!json_value)
return defaultValue;
return json_object_get_int( json_value );
}
bool mpw_get_json_boolean(
json_object *obj, const char *section, bool defaultValue) {
json_object *json_value = mpw_get_json_section( obj, section );
if (!json_value)
return defaultValue;
return json_object_get_boolean( json_value ) == TRUE;
}
bool mpw_update_masterKey(MPMasterKey *masterKey, MPAlgorithmVersion *masterKeyAlgorithm, MPAlgorithmVersion targetKeyAlgorithm,
const char *fullName, const char *masterPassword) {
if (*masterKeyAlgorithm != targetKeyAlgorithm) {
mpw_free( *masterKey, MPMasterKeySize );
*masterKeyAlgorithm = targetKeyAlgorithm;
*masterKey = mpw_masterKey(
fullName, masterPassword, *masterKeyAlgorithm );
if (!*masterKey) {
err( "Couldn't derive master key for user %s, algorithm %d.\n", fullName, *masterKeyAlgorithm );
return false;
}
}
return true;
}