diff options
Diffstat (limited to 'source3/lib/vagent.c')
| -rw-r--r-- | source3/lib/vagent.c | 242 |
1 files changed, 242 insertions, 0 deletions
diff --git a/source3/lib/vagent.c b/source3/lib/vagent.c new file mode 100644 index 0000000000..96df03e2f3 --- /dev/null +++ b/source3/lib/vagent.c @@ -0,0 +1,242 @@ +/* + Unix SMB/Netbios implementation. + Version 2 + SMB agent/socket plugin + Copyright (C) Andrew Tridgell 1999 + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +*/ + +#include "includes.h" +#include "smb.h" + +extern int DEBUGLEVEL; + + +/**************************************************************************** +terminate socket connection +****************************************************************************/ +static void sock_redir_free(struct vagent_ops *va, struct sock_redir *sock) +{ + if (sock->c != -1) + { + close(sock->c); + sock->c = -1; + } + if (sock->n != NULL) + { + va->free_sock(sock->n); + sock->n = NULL; + } + free(sock); +} + +/**************************************************************************** +free a sockent array +****************************************************************************/ +static void free_sock_array(struct vagent_ops*va) +{ + void(*fn)(void*) = (void(*)(void*))&va->free_sock; + free_void_array(va->num_socks, (void**)va->socks, *fn); +} + +/**************************************************************************** +add a sockent state to the array +****************************************************************************/ +static struct sock_redir* add_sock_to_array(uint32 *len, + struct sock_redir ***array, + struct sock_redir *sock) +{ + int i; + for (i = 0; i < (*len); i++) + { + if ((*array)[i] == NULL) + { + (*array)[i] = sock; + return sock; + } + } + + return (struct sock_redir*)add_item_to_array(len, + (void***)array, (void*)sock); + +} + +/**************************************************************************** +initiate sockent array +****************************************************************************/ +void init_sock_redir(struct vagent_ops*va) +{ + va->socks = NULL; + va->num_socks = 0; +} + +/**************************************************************************** +terminate sockent array +****************************************************************************/ +void free_sock_redir(struct vagent_ops*va) +{ + free_sock_array(va); + init_sock_redir(va); +} + +/**************************************************************************** +create a new sockent state from user credentials +****************************************************************************/ +static struct sock_redir *sock_redir_get(struct vagent_ops *va, int fd) +{ + struct sock_redir *sock = (struct sock_redir*)malloc(sizeof(*sock)); + + if (sock == NULL) + { + return NULL; + } + + ZERO_STRUCTP(sock); + + sock->c = fd; + sock->n = NULL; + + DEBUG(10,("sock_redir_get:\tfd:\t%d\n", fd)); + + return sock; +} +/**************************************************************************** +init sock state +****************************************************************************/ +static void sock_add(struct vagent_ops *va, int fd) +{ + struct sock_redir *sock; + sock = sock_redir_get(va, fd); + if (sock != NULL) + { + add_sock_to_array(&va->num_socks, &va->socks, sock); + } +} + +/**************************************************************************** +delete a sockent state +****************************************************************************/ +static BOOL sock_del(struct vagent_ops *va, int fd) +{ + int i; + + for (i = 0; i < va->num_socks; i++) + { + if (va->socks[i] == NULL) continue; + if (va->socks[i]->c == fd) + { + sock_redir_free(va, va->socks[i]); + va->socks[i] = NULL; + return True; + } + } + + return False; +} + +void start_agent(struct vagent_ops *va) +{ + int s, c; + + s = va->get_agent_sock(va->id); + + while (1) + { + int i; + fd_set fds; + int num; + struct sockaddr_un addr; + int in_addrlen = sizeof(addr); + int maxfd = s; + + FD_ZERO(&fds); + FD_SET(s, &fds); + + for (i = 0; i < va->num_socks; i++) + { + if (va->socks[i] != NULL) + { + int fd = va->socks[i]->c; + FD_SET(fd, &fds); + maxfd = MAX(maxfd, fd); + + if (va->socks[i]->n != NULL) + { + fd = va->socks[i]->s; + FD_SET(fd, &fds); + maxfd = MAX(fd, maxfd); + } + } + } + + dbgflush(); + num = sys_select(maxfd+1,&fds,NULL, NULL); + + if (num <= 0) + { + continue; + } + + if (FD_ISSET(s, &fds)) + { + FD_CLR(s, &fds); + c = accept(s, (struct sockaddr*)&addr, &in_addrlen); + if (c != -1) + { + sock_add(va, c); + } + } + + for (i = 0; i < va->num_socks; i++) + { + if (va->socks[i] == NULL) + { + continue; + } + if (FD_ISSET(va->socks[i]->c, &fds)) + { + FD_CLR(va->socks[i]->c, &fds); + if (!va->process_cli_sock(va->socks, + va->num_socks, + va->socks[i])) + { + sock_redir_free(va, va->socks[i]); + va->socks[i] = NULL; + } + } + if (va->socks[i] == NULL) + { + continue; + } + if (va->socks[i]->n == NULL) + { + continue; + } + if (FD_ISSET(va->socks[i]->s, &fds)) + { + FD_CLR(va->socks[i]->s, &fds); + if (!va->process_srv_sock(va->socks, + va->num_socks, + va->socks[i]->s)) + { + sock_redir_free(va, va->socks[i]); + va->socks[i] = NULL; + } + } + } + } +} + |