82 lines
2.5 KiB
C++
82 lines
2.5 KiB
C++
#include <stddef.h>
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#include <stdio.h>
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#include <stdint.h>
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#include <string.h>
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#include <stdlib.h>
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#include <pwd.h>
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#include <unistd.h>
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extern "C" {
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#include "hostfile.h"
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#include "auth.h"
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#include "auth-options.h"
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#include "sshkey.h"
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// testdata/id_ed25519.pub and testdata/id_ed25519-cert.pub
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const char *pubkey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIDPQXmEVMVLmeFRyafKMVWgPDkv8/uRBTwmcEDatZzMD";
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const char *certtext = "ssh-ed25519-cert-v01@openssh.com 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 id_ed25519.pub";
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// stubs
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void auth_debug_add(const char *fmt,...)
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{
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}
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void
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auth_log_authopts(const char *loc, const struct sshauthopt *opts, int do_remote)
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{
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}
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int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
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{
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char *tmp, *o, *cp = (char *)malloc(size + 1 + strlen(pubkey) + 1);
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struct sshauthopt *opts = NULL;
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struct passwd *pw = getpwuid(getuid());
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static struct sshkey *key, *cert;
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if (key == NULL) {
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if ((key = sshkey_new(KEY_UNSPEC)) == NULL ||
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(cert = sshkey_new(KEY_UNSPEC)) == NULL)
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abort();
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if ((o = tmp = strdup(pubkey)) == NULL ||
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sshkey_read(key, &tmp) != 0)
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abort();
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free(o);
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if ((o = tmp = strdup(certtext)) == NULL ||
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sshkey_read(cert, &tmp) != 0)
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abort();
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free(o);
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}
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if (cp == NULL || pw == NULL || key == NULL || cert == NULL)
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abort();
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// Cleanup whitespace at input EOL.
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for (; size > 0 && strchr(" \t\r\n", data[size - 1]) != NULL; size--) ;
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// Append a pubkey that will match.
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memcpy(cp, data, size);
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cp[size] = ' ';
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memcpy(cp + size + 1, pubkey, strlen(pubkey) + 1);
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// Try key.
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if ((tmp = strdup(cp)) == NULL)
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abort();
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(void) auth_check_authkey_line(pw, key, tmp, "127.0.0.1", "localhost",
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"fuzz", &opts);
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free(tmp);
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sshauthopt_free(opts);
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// Try cert.
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if ((tmp = strdup(cp)) == NULL)
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abort();
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(void) auth_check_authkey_line(pw, cert, tmp, "127.0.0.1", "localhost",
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"fuzz", &opts);
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free(tmp);
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sshauthopt_free(opts);
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free(cp);
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return 0;
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}
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} // extern "C"
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