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Add more EINVAL errno setting on key read failures

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Teor found these.  This is for part of #16582.
This commit is contained in:
Nick Mathewson 2015-07-15 10:35:29 -04:00
parent 5e8edba3d8
commit 3c28d95ca7
3 changed files with 25 additions and 10 deletions
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18
src/common/crypto_ed25519.c
View File

@ -381,10 +381,13 @@ ed25519_seckey_read_from_file(ed25519_secret_key_t *seckey_out,
len = crypto_read_tagged_contents_from_file(filename, "ed25519v1-secret",
tag_out, seckey_out->seckey,
sizeof(seckey_out->seckey));
if (len != sizeof(seckey_out->seckey))
return -1;
if (len == sizeof(seckey_out->seckey)) {
return 0;
} else if (len >= 0) {
errno = EINVAL;
}
return 0;
return -1;
}
/**
@ -417,10 +420,13 @@ ed25519_pubkey_read_from_file(ed25519_public_key_t *pubkey_out,
len = crypto_read_tagged_contents_from_file(filename, "ed25519v1-public",
tag_out, pubkey_out->pubkey,
sizeof(pubkey_out->pubkey));
if (len != sizeof(pubkey_out->pubkey))
return -1;
if (len == sizeof(pubkey_out->pubkey)) {
return 0;
} else if (len >= 0) {
errno = EINVAL;
}
return 0;
return -1;
}
/** Release all storage held for <b>kp</b>. */

9
src/common/util.c
View File

@ -1997,8 +1997,10 @@ read_all(tor_socket_t fd, char *buf, size_t count, int isSocket)
size_t numread = 0;
ssize_t result;
if (count > SIZE_T_CEILING || count > SSIZE_MAX)
if (count > SIZE_T_CEILING || count > SSIZE_MAX) {
errno = EINVAL;
return -1;
}
while (numread != count) {
if (isSocket)
@ -2558,8 +2560,10 @@ read_file_to_str_until_eof(int fd, size_t max_bytes_to_read, size_t *sz_out)
char *string = NULL;
size_t string_max = 0;
if (max_bytes_to_read+1 >= SIZE_T_CEILING)
if (max_bytes_to_read+1 >= SIZE_T_CEILING) {
errno = EINVAL;
return NULL;
}
do {
/* XXXX This "add 1K" approach is a little goofy; if we care about
@ -2655,6 +2659,7 @@ read_file_to_str(const char *filename, int flags, struct stat *stat_out)
if ((uint64_t)(statbuf.st_size)+1 >= SIZE_T_CEILING) {
close(fd);
errno = EINVAL;
return NULL;
}

8
src/or/routerkeys.c
View File

@ -34,14 +34,18 @@ read_encrypted_secret_key(ed25519_secret_key_t *out,
r = 0;
goto done;
}
if (strcmp(tag, ENC_KEY_TAG))
if (strcmp(tag, ENC_KEY_TAG)) {
saved_errno = EINVAL;
goto done;
}
while (1) {
ssize_t pwlen =
tor_getpass("Enter pasphrase for master key:", pwbuf, sizeof(pwbuf));
if (pwlen < 0)
if (pwlen < 0) {
saved_errno = EINVAL;
goto done;
}
const int r = crypto_unpwbox(&secret, &secret_len,
encrypted_key, encrypted_len,