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Merge pull request #3637 from cesanta/misc

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misc check strenghtens and debug guards
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Sergio R. Caprile authored and GitHub committed 2026-07-16 15:16:43 -03:00
2 parents 72ff0dfb07 cb57182ee0
commit b86f255407
3 files changed
+36 -20
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src/tls_builtin.c
+15 -6
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@@ -2324,7 +2324,9 @@ static int mg_rsa_parse_key(const uint8_t *der, size_t dersz,
// Parse version (should be 0)
MG_VERBOSE(("Before version: offset=%d, bytes: %02x %02x %02x %02x",
(int) (p - der), p[0], p[1], p[2], p[3]));
(int) (p - der), p < end ? p[0] : 0xFF,
p + 1 < end ? p[1] : 0xFF, p + 2 < end ? p[2] : 0xFF,
p + 3 < end ? p[3] : 0xFF));
if (mg_rsa_parse_der_int(&p, end, &version) < 0) {
MG_ERROR(("Failed to parse version"));
return -1;
@@ -2335,7 +2337,10 @@ static int mg_rsa_parse_key(const uint8_t *der, size_t dersz,
// Parse the 8 components: n, e, d, p, q, dP, dQ, qInv
MG_VERBOSE(("Before n: offset=%d, bytes: %02x %02x %02x %02x %02x %02x",
(int) (p - der), p[0], p[1], p[2], p[3], p[4], p[5]));
(int) (p - der), p < end ? p[0] : 0xFF,
p + 1 < end ? p[1] : 0xFF, p + 2 < end ? p[2] : 0xFF,
p + 3 < end ? p[3] : 0xFF, p + 4 < end ? p[4] : 0xFF,
p + 5 < end ? p[5] : 0xFF));
if (mg_rsa_parse_der_int(&p, end, &key->n) < 0) {
MG_ERROR(("Failed to parse n (modulus)"));
return -1;
@@ -2343,10 +2348,14 @@ static int mg_rsa_parse_key(const uint8_t *der, size_t dersz,
MG_VERBOSE(("Parsed n: %d bytes, offset now=%d, consumed=%d bytes total",
(int) key->n.len, (int) (p - der), (int) (p - der)));
MG_VERBOSE((" First 8 bytes of n: %02x %02x %02x %02x %02x %02x %02x %02x",
(unsigned char) key->n.buf[0], (unsigned char) key->n.buf[1],
(unsigned char) key->n.buf[2], (unsigned char) key->n.buf[3],
(unsigned char) key->n.buf[4], (unsigned char) key->n.buf[5],
(unsigned char) key->n.buf[6], (unsigned char) key->n.buf[7]));
key->n.len > 0 ? (unsigned char) key->n.buf[0] : 0xFF,
key->n.len > 1 ? (unsigned char) key->n.buf[1] : 0xFF,
key->n.len > 2 ? (unsigned char) key->n.buf[2] : 0xFF,
key->n.len > 3 ? (unsigned char) key->n.buf[3] : 0xFF,
key->n.len > 4 ? (unsigned char) key->n.buf[4] : 0xFF,
key->n.len > 5 ? (unsigned char) key->n.buf[5] : 0xFF,
key->n.len > 6 ? (unsigned char) key->n.buf[6] : 0xFF,
key->n.len > 7 ? (unsigned char) key->n.buf[7] : 0xFF));
MG_VERBOSE((" Next bytes after n: %02x %02x %02x %02x %02x %02x",
p < end ? p[0] : 0xFF, p + 1 < end ? p[1] : 0xFF,
p + 2 < end ? p[2] : 0xFF, p + 3 < end ? p[3] : 0xFF,