diff options
Diffstat (limited to 'libssh/keyfiles.c')
| -rw-r--r-- | libssh/keyfiles.c | 33 |
1 files changed, 24 insertions, 9 deletions
diff --git a/libssh/keyfiles.c b/libssh/keyfiles.c index ccf59e3..99510c2 100644 --- a/libssh/keyfiles.c +++ b/libssh/keyfiles.c @@ -786,15 +786,30 @@ static int alldigits(char *s) /** \addtogroup ssh_session * @{ */ -/** \brief lowercases a string - * \param string string to lowercase - * \internal +/** + * @brief Lowercase a string. + * + * @param str String to lowercase. + * + * @return The lowered string or NULL on error. + * + * @internal */ -static void lowercase(char *string){ - for (;*string;string++){ - *string=tolower(*string); - } +static char *lowercase(const char* str) { + char *p = 0; + char *new = strdup(str); + + if((str == NULL) || (new == NULL)) { + return NULL; + } + + for (p = new; *p; p++) { + *p = tolower(*p); + } + + return new; } + /** \brief frees a token array * \internal */ @@ -1021,8 +1036,7 @@ int ssh_is_server_known(SSH_SESSION *session){ leave_function(); return SSH_SERVER_ERROR; } - host=strdup(session->options->host); - lowercase(host); + host = lowercase(session->options->host); do { tokens=ssh_get_knownhost_line(session,&file,session->options->known_hosts_file,&type); // @@ -1059,6 +1073,7 @@ int ssh_is_server_known(SSH_SESSION *session){ } } } while (1); + SAFE_FREE(host); /* Return the current state at end of file */ leave_function(); return ret; |