/*++ /* NAME /* tlsproxy_state 3 /* SUMMARY /* Postfix SMTP server /* SYNOPSIS /* #include <tlsproxy.h> /* /* TLSP_STATE *tlsp_state_create(service, plaintext_stream) /* const char *service; /* VSTREAM *plaintext_stream; /* /* void tlsp_state_free(state) /* TLSP_STATE *state; /* DESCRIPTION /* This module provides TLSP_STATE constructor and destructor /* routines. /* /* tlsp_state_create() initializes session context. /* /* tlsp_state_free() destroys session context. /* /* Arguments: /* .IP service /* The service name for the TLS library. This argument is copied. /* The destructor will automatically destroy the string. /* .IP plaintext_stream /* The VSTREAM between postscreen(8) and tlsproxy(8). /* The destructor will automatically close the stream. /* .PP /* Other structure members are set by the application. The /* text below describes how the TLSP_STATE destructor /* disposes of them. /* .IP plaintext_buf /* NBBIO for plaintext I/O. /* The destructor will automatically turn off read/write/timeout /* events and destroy the NBBIO. /* .IP ciphertext_fd /* The file handle for the remote SMTP client socket. /* The destructor will automatically turn off read/write events /* and close the file handle. /* .IP ciphertext_timer /* The destructor will automatically turn off this time event. /* .IP timeout /* Time limit for plaintext and ciphertext I/O. /* .IP remote_endpt /* Printable remote endpoint name. /* The destructor will automatically destroy the string. /* DIAGNOSTICS /* All errors are fatal. /* LICENSE /* .ad /* .fi /* The Secure Mailer license must be distributed with this software. /* AUTHOR(S) /* Wietse Venema /* IBM T.J. Watson Research /* P.O. Box 704 /* Yorktown Heights, NY 10598, USA /*--*/ /* * System library. */ #include <sys_defs.h> /* * Utility library. */ #include <msg.h> #include <mymalloc.h> #include <nbbio.h> /* * Master library. */ #include <mail_server.h> /* * TLS library. */ #ifdef USE_TLS #define TLS_INTERNAL /* XXX */ #include <tls.h> /* * Application-specific. */ #include <tlsproxy.h> /* tlsp_state_create - create TLS proxy state object */ TLSP_STATE *tlsp_state_create(const char *service, VSTREAM *plaintext_stream) { TLSP_STATE *state = (TLSP_STATE *) mymalloc(sizeof(*state)); state->flags = TLSP_FLAG_DO_HANDSHAKE; state->service = mystrdup(service); state->plaintext_stream = plaintext_stream; state->plaintext_buf = 0; state->ciphertext_fd = -1; state->ciphertext_timer = 0; state->timeout = -1; state->remote_endpt = 0; state->tls_context = 0; return (state); } /* tlsp_state_free - destroy state objects, connection and events */ void tlsp_state_free(TLSP_STATE *state) { myfree(state->service); if (state->plaintext_buf) /* turns off plaintext events */ nbbio_free(state->plaintext_buf); event_server_disconnect(state->plaintext_stream); if (state->ciphertext_fd >= 0) { event_disable_readwrite(state->ciphertext_fd); (void) close(state->ciphertext_fd); } if (state->ciphertext_timer) event_cancel_timer(state->ciphertext_timer, (char *) state); if (state->remote_endpt) { msg_info("DISCONNECT %s", state->remote_endpt); myfree(state->remote_endpt); } if (state->tls_context) tls_free_context(state->tls_context); myfree((char *) state); } #endif