8f907b25ba
and add the Enterprise / Commercial licensing option.
Main changes:
- Replace GPLv3 headers with AGPLv3 headers in source files.
- Update LICENSE file to the full AGPLv3 text.
- Add ENTERPRISE.md describing the dual-licensing model:
* Community Edition: AGPLv3 (strong copyleft, including network use).
* Enterprise / Commercial Edition: proprietary license for production /
multi-user / OEM use without the obligation to disclose derivative code.
- Update README with a new "License and Commercial Use" section pointing to
ENTERPRISE.md and clarifying how companies can obtain a commercial license.
Why this change:
- AGPLv3 ensures that modified versions offered as a service or deployed
in production environments must provide corresponding source code.
- The Enterprise / Commercial edition provides organizations with an
alternative proprietary license that allows internal, large-scale, or OEM
use (bulk provisioning, policy enforcement, inventory / revocation,
custom attestation, signed builds) without AGPL disclosure obligations.
This commit formally marks the first release that is dual-licensed:
AGPLv3 for the Community Edition and a proprietary commercial license
for Enterprise customers.
Signed-off-by: Pol Henarejos <pol.henarejos@cttc.es>
140 lines
3.3 KiB
C
140 lines
3.3 KiB
C
/*
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* This file is part of the Pico Keys SDK distribution (https://github.com/polhenarejos/pico-keys-sdk).
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* Copyright (c) 2022 Pol Henarejos.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, version 3.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "pico_keys.h"
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#include "asn1.h"
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int asn1_ctx_init(uint8_t *data, uint16_t len, asn1_ctx_t *ctx) {
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if (!ctx) {
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return PICOKEY_ERR_NULL_PARAM;
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}
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ctx->data = data;
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ctx->len = len;
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return PICOKEY_OK;
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}
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int asn1_ctx_clear(asn1_ctx_t *ctx) {
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ctx->data = NULL;
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ctx->len = 0;
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return PICOKEY_OK;
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}
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uint16_t asn1_len(asn1_ctx_t *ctx) {
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if (ctx->data && ctx->len > 0) {
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return ctx->len;
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}
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return 0;
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}
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uint32_t asn1_get_uint(asn1_ctx_t *ctx) {
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uint32_t d = ctx->data[0];
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for (uint16_t lt = 1; lt < MIN(ctx->len, sizeof(uint32_t)); lt++) {
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d <<= 8;
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d |= ctx->data[lt];
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}
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return d;
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}
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uint16_t asn1_len_tag(uint16_t tag, uint16_t len) {
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uint16_t ret = 1 + format_tlv_len(len, NULL) + len;
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if (tag > 0x00ff) {
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return ret + 1;
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}
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return ret;
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}
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uint8_t format_tlv_len(uint16_t len, uint8_t *out) {
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if (len < 128) {
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if (out) {
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*out = (uint8_t)len;
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}
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return 1;
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}
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else if (len < 256) {
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if (out) {
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*out++ = 0x81;
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*out++ = (uint8_t)len;
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}
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return 2;
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}
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if (out) {
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*out++ = 0x82;
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put_uint16_t_be(len, out);
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}
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return 3;
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}
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int walk_tlv(const asn1_ctx_t *ctxi,
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uint8_t **p,
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uint16_t *tag,
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uint16_t *tag_len,
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uint8_t **data) {
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if (!p) {
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return 0;
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}
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if (!*p) {
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*p = (uint8_t *) ctxi->data;
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}
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if (*p - ctxi->data >= ctxi->len) {
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return 0;
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}
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uint16_t tg = 0x0;
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uint16_t tgl = 0;
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tg = *(*p)++;
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if ((tg & 0x1f) == 0x1f) {
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tg <<= 8;
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tg |= *(*p)++;
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}
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tgl = *(*p)++;
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if (tgl == 0x82) {
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tgl = *(*p)++ << 8;
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tgl |= *(*p)++;
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}
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else if (tgl == 0x81) {
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tgl = *(*p)++;
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}
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if (tag) {
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*tag = tg;
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}
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if (tag_len) {
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*tag_len = tgl;
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}
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if (data) {
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*data = *p;
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}
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*p = *p + tgl;
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return 1;
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}
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bool asn1_find_tag(const asn1_ctx_t *ctxi,
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uint16_t itag,
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asn1_ctx_t *ctxo) {
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uint16_t tag = 0x0;
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uint8_t *p = NULL;
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uint8_t *tdata = NULL;
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uint16_t tlen = 0;
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while (walk_tlv(ctxi, &p, &tag, &tlen, &tdata)) {
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if (itag == tag) {
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if (ctxo != NULL) {
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ctxo->data = tdata;
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ctxo->len = tlen;
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}
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return true;
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}
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}
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return false;
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}
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