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Remove the list of key algorithms in pageant.c.

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The only reason those couldn't be replaced with a call to the
centralised find_pubkey_alg is because that function takes a zero-
terminated string and instead we had a (length,pointer) string. Easily
fixed; there's now a find_pubkey_alg_len(), and we call that.

This also fixes a string-matching bug in which the sense of memcmp was
reversed by mistake for ECDSA keys!
This commit is contained in:
Simon Tatham
2015-05-07 19:57:46 +01:00
parent 47c9a6ef0b
commit 1f4dc6faa7
3 changed files with 14 additions and 18 deletions
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14
pageant.c
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@ -682,18 +682,8 @@ void *pageant_handle_msg(const void *msg, int msglen, int *outlen,
p += alglen;
key = snew(struct ssh2_userkey);
/* Add further algorithm names here. */
if (alglen == 7 && !memcmp(alg, "ssh-rsa", 7))
key->alg = &ssh_rsa;
else if (alglen == 7 && !memcmp(alg, "ssh-dss", 7))
key->alg = &ssh_dss;
else if (alglen == 19 && memcmp(alg, "ecdsa-sha2-nistp256", 19))
key->alg = &ssh_ecdsa_nistp256;
else if (alglen == 19 && memcmp(alg, "ecdsa-sha2-nistp384", 19))
key->alg = &ssh_ecdsa_nistp384;
else if (alglen == 19 && memcmp(alg, "ecdsa-sha2-nistp521", 19))
key->alg = &ssh_ecdsa_nistp521;
else {
key->alg = find_pubkey_alg_len(alglen, alg);
if (!key->alg) {
sfree(key);
fail_reason = "algorithm unknown";
goto failure;