/home/mrjunejune/zenbu: auth/auth

annotate auth/auth_crypto.c @ 270:358dd5950985

sync production config on every deploy Always install the ignored repository .config into /etc/mrjunejune before promoting the new bundle. Co-authored-by: Copilot <[email protected]>

author	MrJuneJune <me@mrjunejune.com>
date	Fri, 07 Aug 2026 13:16:47 -0700
parents	04fee26ecce0
children

rev	line source
264 04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	1 #include "auth/auth_crypto.h"
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	2
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	3 #include <stdio.h>
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	4 #include <string.h>
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	5
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	6 #include <openssl/crypto.h>
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	7 #include <openssl/evp.h>
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	8 #include <openssl/hmac.h>
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	9 #include <openssl/rand.h>
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	10
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	11 #define AUTH_CRYPTO_SCRYPT_N 32768
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	12 #define AUTH_CRYPTO_SCRYPT_R 8
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	13 #define AUTH_CRYPTO_SCRYPT_P 1
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	14 #define AUTH_CRYPTO_SCRYPT_MAXMEM (64ULL * 1024ULL * 1024ULL)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	15
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	16 #define AUTH_CRYPTO_PASSWORD_PREFIX "zenbu-scrypt$v=1$N=32768$r=8$p=1$"
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	17 #define AUTH_CRYPTO_COOKIE_VERSION "v1"
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	18 #define AUTH_CRYPTO_COOKIE_HMAC_DOMAIN "zenbu-auth-guest-cookie-v1:"
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	19 #define AUTH_CRYPTO_IP_HMAC_DOMAIN "zenbu-auth-ip-binding-v1:"
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	20 #define AUTH_CRYPTO_HMAC_INPUT_SIZE 384
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	21
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	22 static boolean auth__bounded_length(
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	23 const char *text,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	24 size_t maximum,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	25 size_t *p_length)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	26 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	27 if (!text \|\| !p_length)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	28 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	29 return FALSE;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	30 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	31
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	32 for (size_t i = 0; i <= maximum; ++i)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	33 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	34 if (text[i] == '\0')
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	35 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	36 *p_length = i;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	37 return TRUE;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	38 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	39 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	40
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	41 return FALSE;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	42 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	43
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	44 static void auth__hex_encode(
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	45 const uint8 *bytes,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	46 size_t byte_count,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	47 char *hex)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	48 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	49 static const char alphabet[] = "0123456789abcdef";
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	50
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	51 for (size_t i = 0; i < byte_count; ++i)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	52 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	53 hex[i * 2] = alphabet[bytes[i] >> 4];
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	54 hex[i * 2 + 1] = alphabet[bytes[i] & 0x0f];
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	55 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	56 hex[byte_count * 2] = '\0';
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	57 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	58
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	59 static int auth__hex_value(char value)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	60 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	61 if (value >= '0' && value <= '9')
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	62 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	63 return value - '0';
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	64 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	65 if (value >= 'a' && value <= 'f')
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	66 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	67 return value - 'a' + 10;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	68 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	69 return -1;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	70 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	71
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	72 static boolean auth__hex_decode(
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	73 const char *hex,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	74 size_t hex_length,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	75 uint8 *bytes,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	76 size_t byte_count)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	77 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	78 if (hex_length != byte_count * 2)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	79 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	80 return FALSE;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	81 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	82
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	83 for (size_t i = 0; i < byte_count; ++i)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	84 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	85 int high = auth__hex_value(hex[i * 2]);
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	86 int low = auth__hex_value(hex[i * 2 + 1]);
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	87 if (high < 0 \|\| low < 0)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	88 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	89 return FALSE;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	90 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	91 bytes[i] = (uint8)((high << 4) \| low);
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	92 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	93
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	94 return TRUE;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	95 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	96
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	97 static boolean auth__secret_is_valid(
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	98 const uint8 *cookie_secret,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	99 size_t cookie_secret_length)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	100 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	101 return cookie_secret &&
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	102 cookie_secret_length >= AUTH_CRYPTO_COOKIE_SECRET_MIN_BYTES &&
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	103 cookie_secret_length <= AUTH_CRYPTO_COOKIE_SECRET_MAX_BYTES;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	104 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	105
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	106 static boolean auth__uuid_is_valid(const char *uuid, size_t uuid_length)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	107 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	108 if (uuid_length != AUTH_CRYPTO_GUEST_UUID_SIZE - 1)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	109 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	110 return FALSE;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	111 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	112
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	113 for (size_t i = 0; i < uuid_length; ++i)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	114 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	115 if (i == 8 \|\| i == 13 \|\| i == 18 \|\| i == 23)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	116 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	117 if (uuid[i] != '-')
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	118 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	119 return FALSE;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	120 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	121 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	122 else if (auth__hex_value(uuid[i]) < 0)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	123 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	124 return FALSE;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	125 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	126 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	127
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	128 return TRUE;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	129 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	130
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	131 static boolean auth__parse_uint64(
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	132 const char *digits,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	133 size_t digit_count,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	134 uint64 *p_value)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	135 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	136 if (!digits \|\| !p_value \|\| digit_count == 0 \|\| digit_count > 20 \|\|
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	137 (digit_count > 1 && digits[0] == '0'))
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	138 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	139 return FALSE;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	140 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	141
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	142 uint64 value = 0;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	143 uint64 maximum = (uint64)-1;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	144 for (size_t i = 0; i < digit_count; ++i)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	145 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	146 if (digits[i] < '0' \|\| digits[i] > '9')
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	147 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	148 return FALSE;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	149 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	150
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	151 uint8 digit = (uint8)(digits[i] - '0');
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	152 if (value > (maximum - digit) / 10)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	153 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	154 return FALSE;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	155 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	156 value = value * 10 + digit;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	157 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	158
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	159 *p_value = value;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	160 return TRUE;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	161 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	162
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	163 static Auth_Crypto_Result auth__hmac_sha256(
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	164 const uint8 *secret,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	165 size_t secret_length,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	166 const char *domain,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	167 const char *value,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	168 size_t value_length,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	169 uint8 digest[32])
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	170 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	171 size_t domain_length = strlen(domain);
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	172 if (domain_length + value_length > AUTH_CRYPTO_HMAC_INPUT_SIZE)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	173 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	174 return AUTH_CRYPTO_INVALID_ARGUMENT;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	175 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	176
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	177 uint8 input[AUTH_CRYPTO_HMAC_INPUT_SIZE];
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	178 memcpy(input, domain, domain_length);
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	179 memcpy(input + domain_length, value, value_length);
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	180
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	181 unsigned int digest_length = 0;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	182 uint8 *result = HMAC(
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	183 EVP_sha256(),
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	184 secret,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	185 (int)secret_length,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	186 input,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	187 domain_length + value_length,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	188 digest,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	189 &digest_length);
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	190 OPENSSL_cleanse(input, sizeof(input));
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	191
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	192 if (!result \|\| digest_length != 32)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	193 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	194 OPENSSL_cleanse(digest, 32);
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	195 return AUTH_CRYPTO_OPERATION_FAILED;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	196 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	197
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	198 return AUTH_CRYPTO_OK;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	199 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	200
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	201 static boolean auth__split_cookie(
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	202 const char *cookie,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	203 size_t cookie_length,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	204 const char *segments[5],
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	205 size_t segment_lengths[5])
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	206 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	207 size_t segment_start = 0;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	208 size_t segment_count = 0;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	209
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	210 for (size_t i = 0; i <= cookie_length; ++i)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	211 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	212 if (i == cookie_length \|\| cookie[i] == '.')
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	213 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	214 if (segment_count >= 5 \|\| i == segment_start)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	215 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	216 return FALSE;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	217 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	218 segments[segment_count] = cookie + segment_start;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	219 segment_lengths[segment_count] = i - segment_start;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	220 ++segment_count;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	221 segment_start = i + 1;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	222 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	223 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	224
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	225 return segment_count == 5;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	226 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	227
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	228 static void auth__base64url_32(
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	229 const uint8 bytes[AUTH_CRYPTO_TOKEN_BYTES],
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	230 char token[AUTH_CRYPTO_TOKEN_SIZE])
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	231 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	232 static const char alphabet[] =
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	233 "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_";
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	234 size_t input_index = 0;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	235 size_t output_index = 0;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	236
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	237 while (input_index + 3 <= AUTH_CRYPTO_TOKEN_BYTES)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	238 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	239 uint32 value = ((uint32)bytes[input_index] << 16) \|
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	240 ((uint32)bytes[input_index + 1] << 8) \|
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	241 bytes[input_index + 2];
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	242 token[output_index++] = alphabet[(value >> 18) & 63];
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	243 token[output_index++] = alphabet[(value >> 12) & 63];
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	244 token[output_index++] = alphabet[(value >> 6) & 63];
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	245 token[output_index++] = alphabet[value & 63];
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	246 input_index += 3;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	247 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	248
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	249 uint32 remainder = ((uint32)bytes[input_index] << 8) \|
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	250 bytes[input_index + 1];
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	251 token[output_index++] = alphabet[(remainder >> 10) & 63];
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	252 token[output_index++] = alphabet[(remainder >> 4) & 63];
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	253 token[output_index++] = alphabet[(remainder << 2) & 63];
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	254 token[output_index] = '\0';
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	255 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	256
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	257 Auth_Crypto_Result Auth_Crypto_Password_Hash(
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	258 const char *password,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	259 char *encoded_hash,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	260 size_t encoded_hash_capacity)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	261 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	262 if (!password \|\| !encoded_hash)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	263 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	264 return AUTH_CRYPTO_INVALID_ARGUMENT;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	265 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	266 if (encoded_hash_capacity < AUTH_CRYPTO_PASSWORD_HASH_ENCODED_SIZE)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	267 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	268 return AUTH_CRYPTO_BUFFER_TOO_SMALL;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	269 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	270 encoded_hash[0] = '\0';
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	271
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	272 size_t password_length = 0;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	273 if (!auth__bounded_length(
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	274 password, AUTH_CRYPTO_PASSWORD_MAX_BYTES, &password_length))
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	275 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	276 return AUTH_CRYPTO_PASSWORD_TOO_LONG;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	277 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	278
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	279 uint8 salt[AUTH_CRYPTO_PASSWORD_SALT_BYTES];
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	280 uint8 hash[AUTH_CRYPTO_PASSWORD_HASH_BYTES];
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	281 if (RAND_bytes(salt, sizeof(salt)) != 1)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	282 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	283 OPENSSL_cleanse(salt, sizeof(salt));
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	284 return AUTH_CRYPTO_RANDOM_FAILED;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	285 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	286
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	287 if (EVP_PBE_scrypt(
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	288 password,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	289 password_length,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	290 salt,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	291 sizeof(salt),
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	292 AUTH_CRYPTO_SCRYPT_N,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	293 AUTH_CRYPTO_SCRYPT_R,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	294 AUTH_CRYPTO_SCRYPT_P,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	295 AUTH_CRYPTO_SCRYPT_MAXMEM,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	296 hash,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	297 sizeof(hash)) != 1)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	298 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	299 OPENSSL_cleanse(salt, sizeof(salt));
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	300 OPENSSL_cleanse(hash, sizeof(hash));
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	301 return AUTH_CRYPTO_OPERATION_FAILED;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	302 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	303
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	304 char salt_hex[AUTH_CRYPTO_PASSWORD_SALT_BYTES * 2 + 1];
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	305 char hash_hex[AUTH_CRYPTO_PASSWORD_HASH_BYTES * 2 + 1];
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	306 auth__hex_encode(salt, sizeof(salt), salt_hex);
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	307 auth__hex_encode(hash, sizeof(hash), hash_hex);
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	308
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	309 int written = snprintf(
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	310 encoded_hash,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	311 encoded_hash_capacity,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	312 "%s%s$%s",
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	313 AUTH_CRYPTO_PASSWORD_PREFIX,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	314 salt_hex,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	315 hash_hex);
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	316
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	317 OPENSSL_cleanse(salt, sizeof(salt));
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	318 OPENSSL_cleanse(hash, sizeof(hash));
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	319 OPENSSL_cleanse(hash_hex, sizeof(hash_hex));
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	320
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	321 if (written < 0 \|\| (size_t)written >= encoded_hash_capacity)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	322 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	323 encoded_hash[0] = '\0';
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	324 return AUTH_CRYPTO_BUFFER_TOO_SMALL;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	325 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	326
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	327 return AUTH_CRYPTO_OK;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	328 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	329
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	330 Auth_Crypto_Result Auth_Crypto_Password_Verify(
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	331 const char *password,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	332 const char *encoded_hash)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	333 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	334 if (!password \|\| !encoded_hash)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	335 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	336 return AUTH_CRYPTO_INVALID_ARGUMENT;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	337 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	338
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	339 size_t password_length = 0;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	340 if (!auth__bounded_length(
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	341 password, AUTH_CRYPTO_PASSWORD_MAX_BYTES, &password_length))
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	342 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	343 return AUTH_CRYPTO_PASSWORD_TOO_LONG;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	344 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	345
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	346 size_t encoded_length = 0;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	347 if (!auth__bounded_length(
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	348 encoded_hash,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	349 AUTH_CRYPTO_PASSWORD_HASH_ENCODED_SIZE - 1,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	350 &encoded_length))
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	351 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	352 return AUTH_CRYPTO_MALFORMED;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	353 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	354
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	355 size_t prefix_length = sizeof(AUTH_CRYPTO_PASSWORD_PREFIX) - 1;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	356 size_t expected_length = prefix_length +
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	357 AUTH_CRYPTO_PASSWORD_SALT_BYTES * 2 + 1 +
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	358 AUTH_CRYPTO_PASSWORD_HASH_BYTES * 2;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	359 if (encoded_length != expected_length \|\|
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	360 memcmp(encoded_hash, AUTH_CRYPTO_PASSWORD_PREFIX, prefix_length) != 0 \|\|
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	361 encoded_hash[prefix_length + AUTH_CRYPTO_PASSWORD_SALT_BYTES * 2] != '$')
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	362 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	363 return AUTH_CRYPTO_MALFORMED;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	364 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	365
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	366 uint8 salt[AUTH_CRYPTO_PASSWORD_SALT_BYTES];
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	367 uint8 expected_hash[AUTH_CRYPTO_PASSWORD_HASH_BYTES];
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	368 uint8 calculated_hash[AUTH_CRYPTO_PASSWORD_HASH_BYTES];
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	369 const char *salt_hex = encoded_hash + prefix_length;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	370 const char *hash_hex =
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	371 salt_hex + AUTH_CRYPTO_PASSWORD_SALT_BYTES * 2 + 1;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	372
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	373 if (!auth__hex_decode(
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	374 salt_hex,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	375 AUTH_CRYPTO_PASSWORD_SALT_BYTES * 2,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	376 salt,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	377 sizeof(salt)) \|\|
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	378 !auth__hex_decode(
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	379 hash_hex,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	380 AUTH_CRYPTO_PASSWORD_HASH_BYTES * 2,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	381 expected_hash,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	382 sizeof(expected_hash)))
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	383 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	384 return AUTH_CRYPTO_MALFORMED;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	385 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	386
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	387 if (EVP_PBE_scrypt(
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	388 password,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	389 password_length,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	390 salt,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	391 sizeof(salt),
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	392 AUTH_CRYPTO_SCRYPT_N,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	393 AUTH_CRYPTO_SCRYPT_R,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	394 AUTH_CRYPTO_SCRYPT_P,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	395 AUTH_CRYPTO_SCRYPT_MAXMEM,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	396 calculated_hash,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	397 sizeof(calculated_hash)) != 1)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	398 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	399 OPENSSL_cleanse(salt, sizeof(salt));
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	400 OPENSSL_cleanse(expected_hash, sizeof(expected_hash));
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	401 OPENSSL_cleanse(calculated_hash, sizeof(calculated_hash));
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	402 return AUTH_CRYPTO_OPERATION_FAILED;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	403 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	404
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	405 int comparison = CRYPTO_memcmp(
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	406 calculated_hash, expected_hash, sizeof(calculated_hash));
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	407 OPENSSL_cleanse(salt, sizeof(salt));
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	408 OPENSSL_cleanse(expected_hash, sizeof(expected_hash));
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	409 OPENSSL_cleanse(calculated_hash, sizeof(calculated_hash));
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	410
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	411 return comparison == 0
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	412 ? AUTH_CRYPTO_OK
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	413 : AUTH_CRYPTO_AUTHENTICATION_FAILED;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	414 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	415
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	416 Auth_Crypto_Result Auth_Crypto_Password_Hash_Validate(const char *encoded_hash)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	417 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	418 if (!encoded_hash)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	419 return AUTH_CRYPTO_INVALID_ARGUMENT;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	420
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	421 size_t encoded_length = 0;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	422 if (!auth__bounded_length(
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	423 encoded_hash,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	424 AUTH_CRYPTO_PASSWORD_HASH_ENCODED_SIZE - 1,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	425 &encoded_length))
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	426 return AUTH_CRYPTO_MALFORMED;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	427
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	428 size_t prefix_length = sizeof(AUTH_CRYPTO_PASSWORD_PREFIX) - 1;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	429 size_t expected_length = prefix_length +
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	430 AUTH_CRYPTO_PASSWORD_SALT_BYTES * 2 + 1 +
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	431 AUTH_CRYPTO_PASSWORD_HASH_BYTES * 2;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	432 if (encoded_length != expected_length \|\|
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	433 memcmp(encoded_hash, AUTH_CRYPTO_PASSWORD_PREFIX, prefix_length) != 0 \|\|
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	434 encoded_hash[prefix_length + AUTH_CRYPTO_PASSWORD_SALT_BYTES * 2] != '$')
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	435 return AUTH_CRYPTO_MALFORMED;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	436
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	437 /* Validate hex characters in salt and hash fields. */
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	438 const char *salt_hex = encoded_hash + prefix_length;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	439 const char hash_hex = salt_hex + AUTH_CRYPTO_PASSWORD_SALT_BYTES 2 + 1;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	440 for (size_t i = 0; i < AUTH_CRYPTO_PASSWORD_SALT_BYTES * 2; i++)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	441 if (auth__hex_value(salt_hex[i]) < 0)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	442 return AUTH_CRYPTO_MALFORMED;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	443 for (size_t i = 0; i < AUTH_CRYPTO_PASSWORD_HASH_BYTES * 2; i++)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	444 if (auth__hex_value(hash_hex[i]) < 0)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	445 return AUTH_CRYPTO_MALFORMED;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	446
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	447 return AUTH_CRYPTO_OK;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	448 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	449
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	450 Auth_Crypto_Result Auth_Crypto_Token_Generate(
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	451 char *token,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	452 size_t token_capacity)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	453 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	454 if (!token)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	455 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	456 return AUTH_CRYPTO_INVALID_ARGUMENT;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	457 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	458 if (token_capacity < AUTH_CRYPTO_TOKEN_SIZE)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	459 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	460 return AUTH_CRYPTO_BUFFER_TOO_SMALL;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	461 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	462 token[0] = '\0';
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	463
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	464 uint8 random_bytes[AUTH_CRYPTO_TOKEN_BYTES];
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	465 if (RAND_bytes(random_bytes, sizeof(random_bytes)) != 1)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	466 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	467 OPENSSL_cleanse(random_bytes, sizeof(random_bytes));
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	468 return AUTH_CRYPTO_RANDOM_FAILED;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	469 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	470
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	471 auth__base64url_32(random_bytes, token);
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	472 OPENSSL_cleanse(random_bytes, sizeof(random_bytes));
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	473 return AUTH_CRYPTO_OK;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	474 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	475
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	476 Auth_Crypto_Result Auth_Crypto_Token_Digest(
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	477 const char *token,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	478 char *digest_hex,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	479 size_t digest_hex_capacity)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	480 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	481 if (!token \|\| !digest_hex)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	482 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	483 return AUTH_CRYPTO_INVALID_ARGUMENT;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	484 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	485 if (digest_hex_capacity < AUTH_CRYPTO_TOKEN_DIGEST_SIZE)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	486 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	487 return AUTH_CRYPTO_BUFFER_TOO_SMALL;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	488 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	489 digest_hex[0] = '\0';
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	490
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	491 size_t token_length = 0;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	492 if (!auth__bounded_length(token, AUTH_CRYPTO_TOKEN_SIZE - 1, &token_length) \|\|
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	493 token_length != AUTH_CRYPTO_TOKEN_SIZE - 1)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	494 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	495 return AUTH_CRYPTO_MALFORMED;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	496 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	497 for (size_t i = 0; i < token_length; ++i)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	498 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	499 char value = token[i];
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	500 if (!((value >= 'A' && value <= 'Z') \|\|
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	501 (value >= 'a' && value <= 'z') \|\|
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	502 (value >= '0' && value <= '9') \|\|
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	503 value == '-' \|\| value == '_'))
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	504 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	505 return AUTH_CRYPTO_MALFORMED;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	506 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	507 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	508
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	509 uint8 digest[AUTH_CRYPTO_TOKEN_DIGEST_BYTES];
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	510 unsigned int digest_length = 0;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	511 if (EVP_Digest(
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	512 token,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	513 token_length,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	514 digest,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	515 &digest_length,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	516 EVP_sha256(),
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	517 NULL) != 1 \|\|
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	518 digest_length != AUTH_CRYPTO_TOKEN_DIGEST_BYTES)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	519 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	520 OPENSSL_cleanse(digest, sizeof(digest));
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	521 return AUTH_CRYPTO_OPERATION_FAILED;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	522 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	523
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	524 auth__hex_encode(digest, sizeof(digest), digest_hex);
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	525 OPENSSL_cleanse(digest, sizeof(digest));
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	526 return AUTH_CRYPTO_OK;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	527 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	528
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	529 Auth_Crypto_Result Auth_Crypto_IP_Binding_Digest(
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	530 const uint8 *cookie_secret,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	531 size_t cookie_secret_length,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	532 const char *canonical_peer_ip,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	533 char *digest_hex,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	534 size_t digest_hex_capacity)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	535 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	536 if (!auth__secret_is_valid(cookie_secret, cookie_secret_length) \|\|
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	537 !canonical_peer_ip \|\| !digest_hex)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	538 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	539 return AUTH_CRYPTO_INVALID_ARGUMENT;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	540 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	541 if (digest_hex_capacity < AUTH_CRYPTO_IP_BINDING_DIGEST_SIZE)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	542 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	543 return AUTH_CRYPTO_BUFFER_TOO_SMALL;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	544 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	545 digest_hex[0] = '\0';
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	546
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	547 size_t ip_length = 0;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	548 if (!auth__bounded_length(
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	549 canonical_peer_ip, AUTH_CRYPTO_IP_MAX_BYTES, &ip_length) \|\|
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	550 ip_length == 0)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	551 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	552 return AUTH_CRYPTO_INVALID_ARGUMENT;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	553 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	554
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	555 uint8 digest[32];
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	556 Auth_Crypto_Result result = auth__hmac_sha256(
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	557 cookie_secret,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	558 cookie_secret_length,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	559 AUTH_CRYPTO_IP_HMAC_DOMAIN,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	560 canonical_peer_ip,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	561 ip_length,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	562 digest);
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	563 if (result != AUTH_CRYPTO_OK)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	564 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	565 return result;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	566 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	567
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	568 auth__hex_encode(digest, sizeof(digest), digest_hex);
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	569 OPENSSL_cleanse(digest, sizeof(digest));
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	570 return AUTH_CRYPTO_OK;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	571 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	572
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	573 Auth_Crypto_Result Auth_Crypto_Guest_Cookie_Create(
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	574 const uint8 *cookie_secret,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	575 size_t cookie_secret_length,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	576 const char *guest_uuid,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	577 uint64 expiration_unix,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	578 const char *ip_binding_digest,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	579 char *cookie,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	580 size_t cookie_capacity)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	581 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	582 if (!auth__secret_is_valid(cookie_secret, cookie_secret_length) \|\|
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	583 !guest_uuid \|\| !ip_binding_digest \|\| !cookie \|\|
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	584 expiration_unix == 0)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	585 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	586 return AUTH_CRYPTO_INVALID_ARGUMENT;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	587 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	588 if (cookie_capacity < AUTH_CRYPTO_GUEST_COOKIE_SIZE)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	589 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	590 return AUTH_CRYPTO_BUFFER_TOO_SMALL;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	591 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	592 cookie[0] = '\0';
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	593
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	594 size_t uuid_length = 0;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	595 if (!auth__bounded_length(
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	596 guest_uuid, AUTH_CRYPTO_GUEST_UUID_SIZE - 1, &uuid_length) \|\|
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	597 !auth__uuid_is_valid(guest_uuid, uuid_length))
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	598 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	599 return AUTH_CRYPTO_INVALID_ARGUMENT;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	600 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	601
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	602 size_t ip_digest_length = 0;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	603 uint8 ip_digest_bytes[32];
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	604 if (!auth__bounded_length(
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	605 ip_binding_digest,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	606 AUTH_CRYPTO_IP_BINDING_DIGEST_SIZE - 1,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	607 &ip_digest_length) \|\|
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	608 !auth__hex_decode(
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	609 ip_binding_digest,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	610 ip_digest_length,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	611 ip_digest_bytes,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	612 sizeof(ip_digest_bytes)))
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	613 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	614 return AUTH_CRYPTO_INVALID_ARGUMENT;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	615 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	616 OPENSSL_cleanse(ip_digest_bytes, sizeof(ip_digest_bytes));
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	617
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	618 char payload[AUTH_CRYPTO_GUEST_COOKIE_SIZE];
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	619 int payload_written = snprintf(
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	620 payload,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	621 sizeof(payload),
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	622 "%s.%s.%llu.%s",
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	623 AUTH_CRYPTO_COOKIE_VERSION,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	624 guest_uuid,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	625 (unsigned long long)expiration_unix,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	626 ip_binding_digest);
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	627 if (payload_written < 0 \|\| (size_t)payload_written >= sizeof(payload))
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	628 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	629 return AUTH_CRYPTO_OPERATION_FAILED;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	630 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	631
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	632 uint8 signature[32];
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	633 Auth_Crypto_Result result = auth__hmac_sha256(
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	634 cookie_secret,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	635 cookie_secret_length,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	636 AUTH_CRYPTO_COOKIE_HMAC_DOMAIN,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	637 payload,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	638 (size_t)payload_written,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	639 signature);
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	640 if (result != AUTH_CRYPTO_OK)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	641 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	642 return result;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	643 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	644
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	645 char signature_hex[65];
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	646 auth__hex_encode(signature, sizeof(signature), signature_hex);
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	647 OPENSSL_cleanse(signature, sizeof(signature));
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	648
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	649 int cookie_written = snprintf(
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	650 cookie,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	651 cookie_capacity,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	652 "%s.%s",
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	653 payload,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	654 signature_hex);
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	655 OPENSSL_cleanse(signature_hex, sizeof(signature_hex));
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	656 if (cookie_written < 0 \|\| (size_t)cookie_written >= cookie_capacity)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	657 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	658 cookie[0] = '\0';
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	659 return AUTH_CRYPTO_BUFFER_TOO_SMALL;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	660 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	661
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	662 return AUTH_CRYPTO_OK;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	663 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	664
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	665 Auth_Crypto_Result Auth_Crypto_Guest_Cookie_Verify(
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	666 const uint8 *cookie_secret,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	667 size_t cookie_secret_length,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	668 const char *cookie,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	669 uint64 current_unix,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	670 const char *expected_ip_binding_digest,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	671 Auth_Crypto_Guest_Cookie *guest_cookie)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	672 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	673 if (!auth__secret_is_valid(cookie_secret, cookie_secret_length) \|\|
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	674 !cookie \|\| !expected_ip_binding_digest \|\| !guest_cookie)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	675 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	676 return AUTH_CRYPTO_INVALID_ARGUMENT;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	677 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	678 memset(guest_cookie, 0, sizeof(*guest_cookie));
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	679
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	680 size_t expected_ip_length = 0;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	681 uint8 expected_ip[32];
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	682 if (!auth__bounded_length(
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	683 expected_ip_binding_digest,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	684 AUTH_CRYPTO_IP_BINDING_DIGEST_SIZE - 1,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	685 &expected_ip_length) \|\|
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	686 !auth__hex_decode(
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	687 expected_ip_binding_digest,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	688 expected_ip_length,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	689 expected_ip,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	690 sizeof(expected_ip)))
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	691 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	692 return AUTH_CRYPTO_INVALID_ARGUMENT;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	693 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	694
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	695 size_t cookie_length = 0;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	696 if (!auth__bounded_length(
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	697 cookie, AUTH_CRYPTO_GUEST_COOKIE_SIZE - 1, &cookie_length))
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	698 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	699 OPENSSL_cleanse(expected_ip, sizeof(expected_ip));
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	700 return AUTH_CRYPTO_MALFORMED;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	701 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	702
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	703 const char *segments[5];
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	704 size_t segment_lengths[5];
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	705 if (!auth__split_cookie(
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	706 cookie, cookie_length, segments, segment_lengths) \|\|
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	707 segment_lengths[0] != sizeof(AUTH_CRYPTO_COOKIE_VERSION) - 1 \|\|
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	708 memcmp(
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	709 segments[0],
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	710 AUTH_CRYPTO_COOKIE_VERSION,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	711 sizeof(AUTH_CRYPTO_COOKIE_VERSION) - 1) != 0 \|\|
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	712 !auth__uuid_is_valid(segments[1], segment_lengths[1]))
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	713 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	714 OPENSSL_cleanse(expected_ip, sizeof(expected_ip));
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	715 return AUTH_CRYPTO_MALFORMED;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	716 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	717
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	718 uint64 expiration_unix = 0;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	719 uint8 cookie_ip[32];
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	720 uint8 provided_signature[32];
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	721 if (!auth__parse_uint64(
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	722 segments[2], segment_lengths[2], &expiration_unix) \|\|
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	723 expiration_unix == 0 \|\|
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	724 !auth__hex_decode(
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	725 segments[3],
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	726 segment_lengths[3],
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	727 cookie_ip,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	728 sizeof(cookie_ip)) \|\|
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	729 !auth__hex_decode(
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	730 segments[4],
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	731 segment_lengths[4],
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	732 provided_signature,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	733 sizeof(provided_signature)))
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	734 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	735 OPENSSL_cleanse(expected_ip, sizeof(expected_ip));
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	736 return AUTH_CRYPTO_MALFORMED;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	737 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	738
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	739 size_t payload_length = (size_t)(segments[4] - cookie - 1);
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	740 uint8 calculated_signature[32];
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	741 Auth_Crypto_Result result = auth__hmac_sha256(
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	742 cookie_secret,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	743 cookie_secret_length,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	744 AUTH_CRYPTO_COOKIE_HMAC_DOMAIN,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	745 cookie,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	746 payload_length,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	747 calculated_signature);
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	748 if (result != AUTH_CRYPTO_OK)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	749 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	750 OPENSSL_cleanse(expected_ip, sizeof(expected_ip));
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	751 OPENSSL_cleanse(cookie_ip, sizeof(cookie_ip));
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	752 OPENSSL_cleanse(provided_signature, sizeof(provided_signature));
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	753 return result;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	754 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	755
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	756 int signature_comparison = CRYPTO_memcmp(
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	757 calculated_signature,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	758 provided_signature,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	759 sizeof(calculated_signature));
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	760 int ip_comparison = CRYPTO_memcmp(
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	761 cookie_ip,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	762 expected_ip,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	763 sizeof(cookie_ip));
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	764 OPENSSL_cleanse(calculated_signature, sizeof(calculated_signature));
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	765 OPENSSL_cleanse(provided_signature, sizeof(provided_signature));
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	766 OPENSSL_cleanse(cookie_ip, sizeof(cookie_ip));
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	767 OPENSSL_cleanse(expected_ip, sizeof(expected_ip));
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	768
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	769 if (signature_comparison != 0)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	770 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	771 return AUTH_CRYPTO_AUTHENTICATION_FAILED;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	772 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	773 if (ip_comparison != 0)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	774 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	775 return AUTH_CRYPTO_IP_MISMATCH;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	776 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	777 if (current_unix >= expiration_unix)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	778 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	779 return AUTH_CRYPTO_EXPIRED;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	780 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	781
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	782 memcpy(
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	783 guest_cookie->guest_uuid,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	784 segments[1],
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	785 AUTH_CRYPTO_GUEST_UUID_SIZE - 1);
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	786 guest_cookie->guest_uuid[AUTH_CRYPTO_GUEST_UUID_SIZE - 1] = '\0';
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	787 guest_cookie->expiration_unix = expiration_unix;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	788 return AUTH_CRYPTO_OK;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	789 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	790
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	791 const char *Auth_Crypto_Result_String(Auth_Crypto_Result result)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	792 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	793 switch (result)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	794 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	795 case AUTH_CRYPTO_OK:
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	796 return "ok";
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	797 case AUTH_CRYPTO_INVALID_ARGUMENT:
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	798 return "invalid argument";
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	799 case AUTH_CRYPTO_BUFFER_TOO_SMALL:
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	800 return "buffer too small";
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	801 case AUTH_CRYPTO_PASSWORD_TOO_LONG:
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	802 return "password too long";
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	803 case AUTH_CRYPTO_RANDOM_FAILED:
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	804 return "secure random generation failed";
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	805 case AUTH_CRYPTO_OPERATION_FAILED:
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	806 return "cryptographic operation failed";
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	807 case AUTH_CRYPTO_MALFORMED:
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	808 return "malformed input";
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	809 case AUTH_CRYPTO_AUTHENTICATION_FAILED:
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	810 return "authentication failed";
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	811 case AUTH_CRYPTO_EXPIRED:
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	812 return "expired";
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	813 case AUTH_CRYPTO_IP_MISMATCH:
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	814 return "IP binding mismatch";
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	815 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	816
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	817 return "unknown result";
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	818 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	819
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	820 size_t Auth_Crypto_Base64url_Encode(
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	821 const uint8 *bytes,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	822 size_t byte_count,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	823 char *out,
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	824 size_t out_capacity)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	825 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	826 if (!bytes \|\| !out \|\| out_capacity == 0)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	827 return 0;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	828
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	829 /* Unpadded output length: full groups + partial group chars */
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	830 size_t full_groups = byte_count / 3;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	831 size_t remainder = byte_count % 3;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	832 size_t unpadded_len = full_groups * 4 +
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	833 (remainder == 0 ? 0 : remainder + 1);
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	834 if (out_capacity < unpadded_len + 1)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	835 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	836 out[0] = '\0';
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	837 return 0;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	838 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	839
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	840 static const char kAlpha[] =
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	841 "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_";
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	842
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	843 size_t in_idx = 0, out_idx = 0;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	844
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	845 /* Full 3-byte groups */
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	846 while (in_idx + 2 < byte_count)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	847 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	848 uint32 v = ((uint32)bytes[in_idx] << 16) \|
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	849 ((uint32)bytes[in_idx + 1] << 8) \|
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	850 bytes[in_idx + 2];
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	851 out[out_idx++] = kAlpha[(v >> 18) & 0x3f];
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	852 out[out_idx++] = kAlpha[(v >> 12) & 0x3f];
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	853 out[out_idx++] = kAlpha[(v >> 6) & 0x3f];
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	854 out[out_idx++] = kAlpha[(v ) & 0x3f];
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	855 in_idx += 3;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	856 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	857
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	858 /* Remaining 1 or 2 bytes (no padding) */
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	859 if (in_idx < byte_count)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	860 {
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	861 uint32 v = (uint32)bytes[in_idx] << 16;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	862 if (in_idx + 1 < byte_count)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	863 v \|= (uint32)bytes[in_idx + 1] << 8;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	864 out[out_idx++] = kAlpha[(v >> 18) & 0x3f];
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	865 out[out_idx++] = kAlpha[(v >> 12) & 0x3f];
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	866 if (in_idx + 1 < byte_count)
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	867 out[out_idx++] = kAlpha[(v >> 6) & 0x3f];
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	868 }
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	869
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	870 out[out_idx] = '\0';
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	871 return out_idx;
04fee26ecce0 add authenticated JRPG conversation platform MrJuneJune <me@mrjunejune.com> parents: diff changeset	872 }

Mercurial

annotate auth/auth_crypto.c @ 270:358dd5950985