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Unix Pageant: --test-sign client option.

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This reads data from standard input, turns it into an SSH-2 sign
request, and writes the resulting signature blob to standard output.

I don't really anticipate many uses for this other than testing. But
it _is_ convenient for testing changes to Pageant itself: it lets me
ask for a signature without first having to construct a pointless SSH
session that will accept the relevant key.
This commit is contained in:
Simon Tatham
2020-02-09 21:56:21 +00:00
parent e0e133b4b0
commit 518c0f0ea1
3 changed files with 84 additions and 1 deletions
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32
pageant.c
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@ -2117,6 +2117,38 @@ int pageant_delete_all_keys(char **retstr)
return PAGEANT_ACTION_OK;
}
int pageant_sign(struct pageant_pubkey *key, ptrlen message, strbuf *out,
uint32_t flags, char **retstr)
{
strbuf *request;
void *response;
int resplen;
BinarySource src[1];
request = strbuf_new_for_agent_query();
put_byte(request, SSH2_AGENTC_SIGN_REQUEST);
put_string(request, key->blob->s, key->blob->len);
put_stringpl(request, message);
put_uint32(request, flags);
pageant_client_query(request, &response, &resplen);
strbuf_free(request);
BinarySource_BARE_INIT(src, response, resplen);
BinarySource_BARE_INIT_PL(src, get_string(src));
int type = get_byte(src);
ptrlen signature = get_string(src);
put_datapl(out, signature);
sfree(response);
if (type == SSH2_AGENT_SIGN_RESPONSE && !get_err(src)) {
*retstr = NULL;
return PAGEANT_ACTION_OK;
} else {
*retstr = dupstr("Agent failed to create signature");
return PAGEANT_ACTION_FAILURE;
}
}
struct pageant_pubkey *pageant_pubkey_copy(struct pageant_pubkey *key)
{
struct pageant_pubkey *ret = snew(struct pageant_pubkey);