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https://codeberg.org/kiss-community/repo
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142 lines
4.4 KiB
C
Executable File
142 lines
4.4 KiB
C
Executable File
/* Copyright (C) 2013, Felix Janda <felix.janda@posteo.de>
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Permission to use, copy, modify, and/or distribute this software for
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any purpose with or without fee is hereby granted, provided that the
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above copyright notice and this permission notice appear in all copies.
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SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <err.h>
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void xwrite(FILE *f, void *p, size_t size)
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{
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if (fwrite(p, 1, size, f) != size) err(1, 0);
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}
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int main(void)
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{
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FILE *f;
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char cert[4096], ecert[4096*4/3 + 100];
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char *line = 0, *tmp, *filename, *label, *pcert = 0;
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ssize_t len;
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size_t size, certsize;
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int trust;
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char **blacklist = 0, **node;
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filename = "./blacklist.txt";
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if (!(f = fopen(filename, "r"))) err(1, "%s", filename);
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while ((len = getline(&line, &size, f)) != -1) {
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if ((line[0] != '#') && (len > 1)) {
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if (!(node = malloc(sizeof(void*) + len))) err(1, 0);
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*node = (char*)blacklist;
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memcpy(node + 1, line, len);
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blacklist = node;
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}
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}
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fclose(f);
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filename = "./certdata.txt";
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if (!(f = fopen(filename, "r"))) err(1, "%s", filename);
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while ((len = getline(&line, &size, f)) != -1) {
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tmp = line;
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if (line[0] == '#') continue;
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if (pcert) {
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if (!strcmp(line, "END\n")) {
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char *base64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
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"abcdefghijklmnopqrstuvwxyz0123456789+/";
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size_t i, j, k, val;
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for (i = 0, val = 0, tmp = ecert; i < (size_t)(pcert - cert); i++) {
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val = (val << 8) + (unsigned char)cert[i];
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if (i % 3 == 2) {
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for (j = 0; j < 4; j++, val >>= 6) tmp[3 - j] = base64[val & 0x3f];
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tmp += 4;
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}
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if (i && !(i % 48)) {
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*tmp = '\n';
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tmp++;
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}
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}
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if (k = i % 3) {
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tmp[2] = '=';
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tmp[3] = '=';
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val <<= 6 - 2*k;
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for (j = 0; j < k + 1; j++, val >>= 6) tmp[k - j] = base64[val & 0x3f];
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tmp += 4;
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}
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certsize = tmp - ecert;
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pcert = 0;
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} else while (sscanf(tmp, "\\%hho", pcert) == 1) pcert++, tmp += 4;
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} else if (!memcmp(line, "CKA_LABEL UTF8 ", 15)) {
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char *p2, *tmp2;
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len -= 15;
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if (!(label = malloc(len))) err(1, 0);
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memcpy(label, line + 15, len);
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trust = 0;
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for (node = blacklist; node; node = (char**)*node)
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if (!strcmp(label, (char*)(node + 1))) trust = 4;
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if (!(p2 = malloc(len + 2))) err(1, 0);
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for (tmp = label + 1, tmp2 = p2; *tmp != '"'; tmp++, tmp2++) {
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switch (*tmp) {
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case '\\':
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if (sscanf(tmp, "\\x%hhx", tmp2)!=1) errx(1, "Bad triple: %s\n", tmp);
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tmp += 3;
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break;
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case '/':
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case ' ':
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*tmp2 = '_';
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break;
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case '(':
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case ')':
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*tmp2 = '=';
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break;
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default:
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*tmp2 = *tmp;
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}
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}
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strcpy(tmp2, ".crt");
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free(label);
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label = p2;
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} else if (!strcmp(line, "CKA_VALUE MULTILINE_OCTAL\n")) pcert = cert;
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else if (!memcmp(line, "CKA_TRUST_SERVER_AUTH CK_TRUST CKT_NSS_", 39)) {
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tmp += 39;
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if (!strcmp(tmp, "TRUSTED_DELEGATOR\n")) trust |= 1;
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else if (!strcmp(tmp, "NOT_TRUSTED\n")) trust |= 2;
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} else if (!memcmp(line,
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"CKA_TRUST_EMAIL_PROTECTION CK_TRUST CKT_NSS_", 44)) {
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tmp += 44;
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if (!strcmp(tmp, "TRUSTED_DELEGATOR\n")) trust |= 1;
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else if (!strcmp(tmp, "NOT_TRUSTED\n")) trust |= 2;
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if (!trust) printf("Ignoring %s\n", label);
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if (trust == 1) {
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FILE *out;
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if (!(out = fopen(label, "w"))) err(1, "%s", label);
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xwrite(out, "-----BEGIN CERTIFICATE-----\n", 28);
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xwrite(out, ecert, certsize);
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xwrite(out, "\n-----END CERTIFICATE-----\n", 27);
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fclose(out);
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}
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}
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}
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fclose(f);
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while (blacklist) {
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node = (char**)*blacklist;
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free(blacklist);
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blacklist = node;
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}
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free(line);
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free(label);
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return 0;
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} |