void
hash_add_entry(struct hash* p_hash, void* p_key, void* p_value)
{
struct hash_node** p_bucket;
struct hash_node* p_new_node;
if (hash_lookup_entry(p_hash, p_key))
{
bug("duplicate hash key");
}
p_bucket = hash_get_bucket(p_hash, p_key);
p_new_node = vsf_sysutil_malloc(sizeof(*p_new_node));
p_new_node->p_prev = 0;
p_new_node->p_next = 0;
p_new_node->p_key = vsf_sysutil_malloc(p_hash->key_size);
vsf_sysutil_memcpy(p_new_node->p_key, p_key, p_hash->key_size);
p_new_node->p_value = vsf_sysutil_malloc(p_hash->value_size);
vsf_sysutil_memcpy(p_new_node->p_value, p_value, p_hash->value_size);
if (!*p_bucket)
{
*p_bucket = p_new_node;
}
else
{
p_new_node->p_next = *p_bucket;
(*p_bucket)->p_prev = p_new_node;
*p_bucket = p_new_node;
}
}
struct hash*
hash_alloc(unsigned int buckets, unsigned int key_size,
unsigned int value_size, hashfunc_t hash_func)
{
unsigned int size;
struct hash* p_hash = vsf_sysutil_malloc(sizeof(*p_hash));
p_hash->buckets = buckets;
p_hash->key_size = key_size;
p_hash->value_size = value_size;
p_hash->hash_func = hash_func;
size = sizeof(struct hash_node*) * buckets;
p_hash->p_nodes = vsf_sysutil_malloc(size);
vsf_sysutil_memclr(p_hash->p_nodes, size);
return p_hash;
}
static int
pam_conv_func(int nmsg, const struct pam_message** p_msg,
struct pam_response** p_reply, void* p_addata)
{
int i;
struct pam_response* p_resps = 0;
(void) p_addata;
if (nmsg < 0)
{
bug("dodgy nmsg in pam_conv_func");
}
p_resps = vsf_sysutil_malloc(sizeof(struct pam_response) * nmsg);
for (i=0; i<nmsg; i++)
{
switch (p_msg[i]->msg_style)
{
case PAM_PROMPT_ECHO_OFF:
p_resps[i].resp_retcode = PAM_SUCCESS;
p_resps[i].resp = (char*) str_strdup(&s_pword_str);
break;
case PAM_TEXT_INFO:
case PAM_ERROR_MSG:
p_resps[i].resp_retcode = PAM_SUCCESS;
p_resps[i].resp = 0;
break;
case PAM_PROMPT_ECHO_ON:
default:
vsf_sysutil_free(p_resps);
return PAM_CONV_ERR;
break;
}
}
*p_reply = p_resps;
return PAM_SUCCESS;
}
void
str_list_add(struct mystr_list* p_list, const struct mystr* p_str,
const struct mystr* p_sort_key_str)
{
struct mystr_list_node* p_node;
/* Expand the node allocation if we have to */
if (p_list->list_len == p_list->alloc_len)
{
if (p_list->alloc_len == 0)
{
p_list->alloc_len = 32;
p_list->p_nodes = vsf_sysutil_malloc(p_list->alloc_len *
sizeof(struct mystr_list_node));
}
else
{
p_list->alloc_len *= 2;
p_list->p_nodes = vsf_sysutil_realloc(p_list->p_nodes,
p_list->alloc_len *
sizeof(struct mystr_list_node));
}
}
p_node = &p_list->p_nodes[p_list->list_len];
p_node->str = s_null_str;
p_node->sort_key_str = s_null_str;
str_copy(&p_node->str, p_str);
if (p_sort_key_str)
{
str_copy(&p_node->sort_key_str, p_sort_key_str);
}
p_list->list_len++;
}
void
private_str_alloc_memchunk(struct mystr* p_str, const char* p_src,
unsigned int len)
{
/* Make sure this will fit in the buffer */
unsigned int buf_needed = len + 1;
if (buf_needed > p_str->alloc_bytes)
{
str_free(p_str);
s_setbuf(p_str, vsf_sysutil_malloc(buf_needed));
p_str->alloc_bytes = buf_needed;
}
vsf_sysutil_memcpy(p_str->p_buf, p_src, len);
p_str->p_buf[len] = '\0';
p_str->len = len;
}
void
vsf_banner_dir_changed(struct vsf_session* p_sess, int ftpcode)
{
struct mystr dir_str = INIT_MYSTR;
/* Do nothing if .message support is off */
if (!tunable_dirmessage_enable)
{
return;
}
if (p_sess->p_visited_dir_list == 0)
{
struct mystr_list the_list = INIT_STRLIST;
p_sess->p_visited_dir_list = vsf_sysutil_malloc(sizeof(struct mystr_list));
*p_sess->p_visited_dir_list = the_list;
}
str_getcwd(&dir_str);
/* Do nothing if we already visited this directory */
if (!str_list_contains_str(p_sess->p_visited_dir_list, &dir_str))
{
/* Just in case, cap the max. no of visited directories we'll remember */
if (str_list_get_length(p_sess->p_visited_dir_list) <
VSFTP_MAX_VISIT_REMEMBER)
{
str_list_add(p_sess->p_visited_dir_list, &dir_str, 0);
}
/* If we have a .message file, squirt it out prepended by the ftpcode and
* the continuation mark '-'
*/
{
struct mystr msg_file_str = INIT_MYSTR;
if (tunable_message_file)
{
(void) str_fileread(&msg_file_str, tunable_message_file,
VSFTP_MAX_MSGFILE_SIZE);
}
vsf_banner_write(p_sess, &msg_file_str, ftpcode);
str_free(&msg_file_str);
}
}
str_free(&dir_str);
}
int LOCAL_XFORM(main, the_session)(void *session) {
struct vsf_session_old *old_session = (struct vsf_session_old *) stackvars_get_local("main", "the_session");
assert(old_session);
struct vsf_session *new_session = (struct vsf_session *) session;
/* copy control connection */
if (old_session->p_local_addr != NULL) {
new_session->p_local_addr = malloc(sizeof(struct sockaddr_in));
memcpy(new_session->p_local_addr, old_session->p_local_addr, sizeof(struct sockaddr_in));
free(old_session->p_local_addr);
}
if (old_session->p_remote_addr != NULL) {
new_session->p_remote_addr = malloc(sizeof(struct sockaddr_in));
memcpy(new_session->p_remote_addr, old_session->p_remote_addr, sizeof(struct sockaddr_in));
free(old_session->p_remote_addr);
}
/* copy data connection */
new_session->pasv_listen_fd = old_session->pasv_listen_fd;
if (old_session->p_port_sockaddr != NULL) {
new_session->p_port_sockaddr = malloc(sizeof(struct sockaddr_in));
memcpy(new_session->p_port_sockaddr, old_session->p_port_sockaddr, sizeof(struct sockaddr_in));
free(old_session->p_port_sockaddr);
}
new_session->data_fd = old_session->data_fd;
new_session->data_progress = old_session->data_progress;
new_session->bw_rate_max = old_session->bw_rate_max;
new_session->bw_send_start_sec = old_session->bw_send_start_sec;
new_session->bw_send_start_usec = old_session->bw_send_start_usec;
/* copy login details */
new_session->is_anonymous = old_session->is_anonymous;
str_copy(&(new_session->user_str), &(old_session->user_str));
str_copy(&(new_session->anon_pass_str), &(old_session->anon_pass_str));
/* copy ftp protocol state */
new_session->restart_pos = old_session->restart_pos;
new_session->is_ascii = old_session->is_ascii;
str_copy(&(new_session->rnfr_filename_str), &(old_session->rnfr_filename_str));
new_session->abor_received = old_session->abor_received;
/* copy ftp session state */
struct mystr_list the_list = INIT_STRLIST;
new_session->p_visited_dir_list = vsf_sysutil_malloc(sizeof(struct mystr_list));
*new_session->p_visited_dir_list = the_list;
struct mystr_list *mystr_l = old_session->p_visited_dir_list;
if (mystr_l != NULL) {
int num_nodes = mystr_l->list_len;
new_session->p_visited_dir_list->list_len = 0;
new_session->p_visited_dir_list->alloc_len = mystr_l->alloc_len; /* save some reallocs */
new_session->p_visited_dir_list->p_nodes = (void*) 0;
int i;
for (i = 0; i < num_nodes; i++) {
str_list_add(new_session->p_visited_dir_list, &(mystr_l->p_nodes[i].str),
&(mystr_l->p_nodes[i].sort_key_str));
}
}
/* copy userids */
new_session->anon_ftp_uid = old_session->anon_ftp_uid;
new_session->anon_upload_chown_uid;
/* guest_user_uid added; main should init it properly */
/* copy cache */
str_copy(&(new_session->banned_email_str), &(old_session->banned_email_str));
str_copy(&(new_session->userlist_str), &(old_session->userlist_str));
str_copy(&(new_session->banner_str), &(old_session->banner_str));
new_session->tcp_wrapper_ok = old_session->tcp_wrapper_ok;
/* copy logging related details */
/* let main + logging.c handle init of xferlog_fd and log_fd */
str_copy(&(new_session->remote_ip_str), &(old_session->remote_ip_str));
new_session->log_type = old_session->log_type;
new_session->log_start_sec = old_session->log_start_sec;
new_session->log_start_usec = old_session->log_start_usec;
str_copy(&(new_session->log_str), &(old_session->log_str));
new_session->transfer_size = old_session->transfer_size;
/* copy buffers */
str_copy(&(new_session->ftp_cmd_str), &(old_session->ftp_cmd_str));
str_copy(&(new_session->ftp_arg_str), &(old_session->ftp_arg_str));
/* copy parent<->child comms channel */
new_session->parent_fd = old_session->parent_fd;
new_session->child_fd = old_session->child_fd;
/* copy other details */
new_session->num_clients = old_session->num_clients;
new_session->num_this_ip = old_session->num_this_ip;
return 1;
}