diff options
Diffstat (limited to 'crypto/openssh/authfile.c')
| -rw-r--r-- | crypto/openssh/authfile.c | 83 |
1 files changed, 80 insertions, 3 deletions
diff --git a/crypto/openssh/authfile.c b/crypto/openssh/authfile.c index 735c647..224c6aa 100644 --- a/crypto/openssh/authfile.c +++ b/crypto/openssh/authfile.c @@ -1,4 +1,4 @@ -/* $OpenBSD: authfile.c,v 1.76 2006/08/03 03:34:41 deraadt Exp $ */ +/* $OpenBSD: authfile.c,v 1.80 2010/03/04 10:36:03 djm Exp $ */ /* * Author: Tatu Ylonen <ylo@cs.hut.fi> * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland @@ -47,6 +47,9 @@ #include <openssl/evp.h> #include <openssl/pem.h> +/* compatibility with old or broken OpenSSL versions */ +#include "openbsd-compat/openssl-compat.h" + #include <errno.h> #include <fcntl.h> #include <stdarg.h> @@ -184,7 +187,11 @@ key_save_private_pem(Key *key, const char *filename, const char *_passphrase, int success = 0; int len = strlen(_passphrase); u_char *passphrase = (len > 0) ? (u_char *)_passphrase : NULL; +#if (OPENSSL_VERSION_NUMBER < 0x00907000L) const EVP_CIPHER *cipher = (len > 0) ? EVP_des_ede3_cbc() : NULL; +#else + const EVP_CIPHER *cipher = (len > 0) ? EVP_aes_128_cbc() : NULL; +#endif if (len > 0 && len <= 4) { error("passphrase too short: have %d bytes, need > 4", len); @@ -552,8 +559,13 @@ key_load_private_type(int type, const char *filename, const char *passphrase, int fd; fd = open(filename, O_RDONLY); - if (fd < 0) + if (fd < 0) { + debug("could not open key file '%s': %s", filename, + strerror(errno)); + if (perm_ok != NULL) + *perm_ok = 0; return NULL; + } if (!key_perm_ok(fd, filename)) { if (perm_ok != NULL) *perm_ok = 0; @@ -588,8 +600,11 @@ key_load_private(const char *filename, const char *passphrase, int fd; fd = open(filename, O_RDONLY); - if (fd < 0) + if (fd < 0) { + debug("could not open key file '%s': %s", filename, + strerror(errno)); return NULL; + } if (!key_perm_ok(fd, filename)) { error("bad permissions: ignore key: %s", filename); close(fd); @@ -677,3 +692,65 @@ key_load_public(const char *filename, char **commentp) key_free(pub); return NULL; } + +/* + * Returns 1 if the specified "key" is listed in the file "filename", + * 0 if the key is not listed or -1 on error. + * If strict_type is set then the key type must match exactly, + * otherwise a comparison that ignores certficiate data is performed. + */ +int +key_in_file(Key *key, const char *filename, int strict_type) +{ + FILE *f; + char line[SSH_MAX_PUBKEY_BYTES]; + char *cp; + u_long linenum = 0; + int ret = 0; + Key *pub; + int (*key_compare)(const Key *, const Key *) = strict_type ? + key_equal : key_equal_public; + + if ((f = fopen(filename, "r")) == NULL) { + if (errno == ENOENT) { + debug("%s: keyfile \"%s\" missing", __func__, filename); + return 0; + } else { + error("%s: could not open keyfile \"%s\": %s", __func__, + filename, strerror(errno)); + return -1; + } + } + + while (read_keyfile_line(f, filename, line, sizeof(line), + &linenum) != -1) { + cp = line; + + /* Skip leading whitespace. */ + for (; *cp && (*cp == ' ' || *cp == '\t'); cp++) + ; + + /* Skip comments and empty lines */ + switch (*cp) { + case '#': + case '\n': + case '\0': + continue; + } + + pub = key_new(KEY_UNSPEC); + if (key_read(pub, &cp) != 1) { + key_free(pub); + continue; + } + if (key_compare(key, pub)) { + ret = 1; + key_free(pub); + break; + } + key_free(pub); + } + fclose(f); + return ret; +} + |
