imapfilter/imapfilter/imapfilter.h

#ifndef IMAPFILTER_H
#define IMAPFILTER_H

#include <stdio.h>
#include <unistd.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <dirent.h>

#ifndef DATA_H
#include "data.h"
#endif

/* Program's version number. */
#define IMAPFILTER_VERSION              "0.8.5"

/* Error codes returned by functions. */
#define ERROR_SIGNAL                    1
#define ERROR_TRIVIAL                   2
#define ERROR_FILE_OPEN                 3
#define ERROR_LOCKFILE                  4
#define ERROR_CONFIG_PARSE              5
#define ERROR_MEMORY_ALLOCATION         6
#define ERROR_SETUID                    7
#define ERROR_TERMIO                    8
#define ERROR_NETWORK                   9
#define ERROR_SSL                       10
#define ERROR_PASSPHRASE                11
#define ERROR_ENCRYPT                   12
#define ERROR_DECRYPT                   13
#define ERROR_FORK                      14
#define ERROR_UNDEFINED                 15

/* Flags that control the program's execution options. */
#define OPTION_DETAILS_QUIET            0x0001
#define OPTION_DETAILS_NORMAL           0x0002
#define OPTION_DETAILS_VERBOSE          0x0004
#define OPTION_DETAILS_CLEAR            0xfff8
#define OPTION_ERRORS                   0x0008
#define OPTION_EXPUNGE                  0x0010
#define OPTION_HEADERS                  0x0020
#define OPTION_NAMESPACE                0x0040
#define OPTION_SUBSCRIBE                0x0080
#define OPTION_WARNING                  0x0100
#define OPTION_PASSWORD_EDITOR          0x0200
#define OPTION_DAEMON_MODE              0x0400

/* Other flags. */
#define FLAG_TTY                        0x01
#define FLAG_TTY_MODIFIED               0x02
#define FLAG_BLANK_PASSWORD             0x04

/* Capabilities of mail server. */
#define CAPABILITY_NONE                 0x00
#define CAPABILITY_NAMESPACE            0x01

/* Flags for logger. */
#define LOG_WRITE                       0
#define LOG_SERVER                      1
#define LOG_USERNAME                    2
#define LOG_MAILBOX                     3
#define LOG_FILTER                      4
#define LOG_ACTION                      5
#define LOG_DESTINATION_MAILBOX         6

/* Buffer size of the IMAP command. */
#define SMALL_CMD                       64
#define MEDIUM_CMD                      512
#define BIG_CMD                         32768

/* Store IMAP command type may replace,add or remove flags. */
#define STORE_FLAG_REPLACE              1
#define STORE_FLAG_ADD                  2
#define STORE_FLAG_REMOVE               3

/* Buffer size of server's response. */
#define RESPONSE_BUF                    (4096 + 1)
#define RESULT_BUF                      512

/* Response codes. */
#define RESPONSE_NULLBODY               -2
#define RESPONSE_NONE                   -1
#define RESPONSE_OK                     0
#define RESPONSE_NO                     1
#define RESPONSE_BAD                    2
#define RESPONSE_BYE                    3
#define RESPONSE_PREAUTH                4
#define RESPONSE_READONLY               5
#define RESPONSE_TRYCREATE              6

/* Size virtual buffer. */
#define VIRTUAL_BUF                     4096

/* Authentication mechanisms string. */
#define AUTH_MECH_LEN                   512

/* Length of mailbox namespace prefix. */
#define NAMESPACE_PREFIX_LEN            64

/* Encryption and decryption buffers. */
#define ENCRYPTION_BUF                  1024
#define DECRYPTION_BUF                  4096

/* Buffer to save flags of the store IMAP command. */
#define STORE_FLAGS_BUF                 64

/* Maximum passwords the password editor can handle. */
#define EDITOR_PASSWORDS_MAX            64

/* Lenght of charset for IMAP SEARCH requests. */
#define CHARSET_LEN                     64


#define min(A, B)                       ((A) < (B) ? (A) : (B))
#define plural(A)                       ((A) == 1 ? "" : "s")


/* Secure memory information. */
typedef struct secmem {
    void *buf;                  /* Allocated memory buffer. */
    size_t size;                /* Size of the buffer. */
    struct secmem *prev, *next; /* Previous/next node of doubly linked list. */
} secmem_t;


/* Namespace of IMAP mailboxes. */
typedef struct namesp {
    char prefix[NAMESPACE_PREFIX_LEN];
    char delim;
} namesp_t;


/*      file.c          */
int read_config(char *cfg);
int parse_config(FILE * fd);
void set_options(char *line, regmatch_t * match);

int read_passwords(void);
int parse_passwords(FILE * fd);
int store_passwords(account_t * accts[]);

int create_homedir(void);
int exists_file(char *fname);
int exists_dir(char *fname);
int create_file(char *fname, mode_t mode);
#ifdef CHECK_PERMISSIONS
int check_file_perms(char *fname, mode_t mode);
int check_dir_perms(char *dname, mode_t mode);
#endif

/*      imapfilter.c    */
void usage(void);
void version(void);

/*      imap.c          */
unsigned int send_command(int *sock, char *cmd);
#ifdef DEBUG
int imap_noop(int *sock);
#endif
int imap_capability(int *sock);
int imap_namespace(int *sock);
int imap_logout(int *sock);
int imap_authenticate(int *sock, char *auth);
int imap_login(int *sock, char *user, char *pass);
/* int imap_list(int *sock, char *refer, char *mbox); */
int imap_subscribe(int *sock, char *mbox);
int imap_examine(int *sock, char *mbox);
int imap_select(int *sock, char *mbox);
int imap_status(int *sock, char *mbox, char *items);
int imap_create(int *sock, char *mbox);
int imap_search(int *sock, char *charset, char *search);
int imap_fetch(int *sock, char *mesg, char *items);
int imap_store(int *sock, char *mesg, unsigned int mode, char *flags);
int imap_copy(int *sock, char *mesg, char *mbox);
int imap_append(int *sock, char *mbox, unsigned int size);
int imap_close(int *sock);
int imap_expunge(int *sock);

/*      lock.c          */
void lockfile_create(void);
void lockfile_check(void);
pid_t lockfile_pid(void);
int lockfile_remove(void);
void kill_imapfilter(void);

/*      log.c           */
void info(const char *info,...);
void verbose(const char *info,...);
void error(const char *errmsg,...);
void fatal(unsigned int errnum, const char *fatal,...);
void catch_signals(void);
void signal_handler(int sig);
int open_logfile(void);
int create_logfile(void);
int close_logfile(void);
void log_info(int flag, void *ptr);
char *get_time(void);

/*      memory.c        */
void *xmalloc(size_t size);
void *xrealloc(void *ptr, size_t size);
void xfree(void *ptr);
char *xstrdup(const char *s);

void *smalloc(size_t size);
void *srealloc(void *ptr, size_t size);
void sfree(void *ptr);
char *sstrdup(const char *s);
void secmem_append(secmem_t * node);
secmem_t *secmem_find(void *ptr);
void secmem_remove(secmem_t * node);
void secmem_clear(void);
#ifdef MEMORY_LOCK
void secmem_lock(void);
#endif
void corefile_disable(void);

/*      misc.c          */
char *strcasestr(const char *haystack, const char *needle);
char *ultostr(unsigned long int num, int base);
char *xstrncpy(char *dest, const char *src, size_t size);

/*      passwd.c        */
void get_password(char *passwd, size_t pwlen);
#ifdef ENCRYPTED_PASSWORDS
int encrypt_passwords(FILE * fd, account_t * accts[]);
int decrypt_passwords(unsigned char **buf, FILE * fd);
void password_editor(void);
#endif

/*      request.c       */
int test(int *sock);
int check_capabilities(int *sock);
int check_namespace(int *sock, namesp_t * nsp);
int login(int *sock, char *user, char *pass);
int check_mailbox(int *sock, char *mbox, namesp_t * nsp);
int select_mailbox(int *sock, char *mbox, namesp_t * nsp);
int mailbox_status(int *sock, char *mbox, namesp_t * nsp);
int close_mailbox(int *sock);
int logout(int *sock);

int apply_filters(filter_t ** filters);
int match_filter(filter_t * filter, char **mesgs);

void empty_fifo(mask_t ** mfifo);
void queue_fifo(mask_t ** mfifo, mask_t * mask);
mask_t *dequeue_fifo(mask_t ** mfifo);

char *generate_filter_and(mask_t * mask, unsigned int masknum,
                           unsigned int masklen);
char *generate_filter_or(mask_t * mask, unsigned int masknum,
                          unsigned int masklen);

int apply_action(char *mesgs, unsigned int *type, account_t * raccount,
                  char *destmbox, unsigned int *msgflags, char *args);
int action_delete(char *mesgs, char *args);
int action_copy(char *mesgs, char *destmbox, char *args);
int action_move(char *mesgs, char *destmbox, char *args);
int action_rcopy(char *mesgs, account_t * destacc, char *destmbox, char *args);
int action_rmove(char *mesgs, account_t * destacc, char *destmbox, char *args);
int action_flag(char *mesgs, unsigned int *type, unsigned int *msgflags, char *args);
int action_list(char *mesgs, char *args);

unsigned int count_messages(char *mesgs);
char *convert_messages(char *mesgs);


/*      response.c      */
void receive_response(int *sock, char *buf);
int server_response(int *sock, unsigned int tag);
void bye_response(char *buf);
int greeting_response(int *sock);
int logout_response(int *sock, unsigned int tag);
int capability_response(int *sock, unsigned int tag);
void auth_mechanisms(void);
int namespace_response(int *sock, unsigned int tag, namesp_t * nsp);
int status_response(int *sock, unsigned int tag, char *mbox);
int select_response(int *sock, unsigned int tag);
int search_response(int *sock, unsigned int tag, char **mesgs);
int fetch_response(int *sock, unsigned int tag, int reset, char *fetch);
int fetchsize_response(int *sock, unsigned int *size, unsigned int tag);
int append_response(int *sock, unsigned int tag);
int copy_response(int *sock, unsigned int tag);
int analyze_response(char *buf);
void init_vbuf(void);
void reset_vbuf(void);
void check_vbuf(size_t n);

/*      socket.c        */
int init_connection(int *sock, char *serv, unsigned short int port,
                     unsigned int protocol);
int ssl_init(int *sock, unsigned int protocol);
int close_connection(int *sock);
int socket_read(int *sock, char *buf);
int socket_write(int *sock, char *data);

/*      tty.c           */
int tty_store(void);
int tty_disable_echo(void);
int tty_restore(void);

#endif                          /* IMAPFILTER_H */
1	lefcha	1.9	#ifndef IMAPFILTER_H
2			#define IMAPFILTER_H
3
4			#include <stdio.h>
5	lefcha	1.25	#include <unistd.h>
6			#include <sys/stat.h>
7			#include <sys/types.h>
8	lefcha	1.29	#include <dirent.h>
9	lefcha	1.9
10			#ifndef DATA_H
11			#include "data.h"
12			#endif
13
14	lefcha	1.43	/* Program's version number. */
15	lefcha	1.46	#define IMAPFILTER_VERSION "0.8.5"
16	lefcha	1.43
17	lefcha	1.11	/* Error codes returned by functions. */
18	lefcha	1.22	#define ERROR_SIGNAL 1
19			#define ERROR_TRIVIAL 2
20			#define ERROR_FILE_OPEN 3
21	lefcha	1.32	#define ERROR_LOCKFILE 4
22	lefcha	1.29	#define ERROR_CONFIG_PARSE 5
23			#define ERROR_MEMORY_ALLOCATION 6
24			#define ERROR_SETUID 7
25			#define ERROR_TERMIO 8
26			#define ERROR_NETWORK 9
27			#define ERROR_SSL 10
28			#define ERROR_PASSPHRASE 11
29			#define ERROR_ENCRYPT 12
30			#define ERROR_DECRYPT 13
31	lefcha	1.30	#define ERROR_FORK 14
32			#define ERROR_UNDEFINED 15
33	lefcha	1.9
34	lefcha	1.30	/* Flags that control the program's execution options. */
35	lefcha	1.36	#define OPTION_DETAILS_QUIET 0x0001
36			#define OPTION_DETAILS_NORMAL 0x0002
37			#define OPTION_DETAILS_VERBOSE 0x0004
38			#define OPTION_DETAILS_CLEAR 0xfff8
39	lefcha	1.38	#define OPTION_ERRORS 0x0008
40			#define OPTION_EXPUNGE 0x0010
41			#define OPTION_HEADERS 0x0020
42			#define OPTION_NAMESPACE 0x0040
43			#define OPTION_SUBSCRIBE 0x0080
44			#define OPTION_WARNING 0x0100
45			#define OPTION_PASSWORD_EDITOR 0x0200
46			#define OPTION_DAEMON_MODE 0x0400
47	lefcha	1.30
48			/* Other flags. */
49	lefcha	1.45	#define FLAG_TTY 0x01
50			#define FLAG_TTY_MODIFIED 0x02
51			#define FLAG_BLANK_PASSWORD 0x04
52	lefcha	1.25
53			/* Capabilities of mail server. */
54			#define CAPABILITY_NONE 0x00
55			#define CAPABILITY_NAMESPACE 0x01
56	lefcha	1.9
57	lefcha	1.12	/* Flags for logger. */
58			#define LOG_WRITE 0
59			#define LOG_SERVER 1
60			#define LOG_USERNAME 2
61			#define LOG_MAILBOX 3
62			#define LOG_FILTER 4
63			#define LOG_ACTION 5
64			#define LOG_DESTINATION_MAILBOX 6
65
66	lefcha	1.17	/* Buffer size of the IMAP command. */
67	lefcha	1.9	#define SMALL_CMD 64
68	lefcha	1.32	#define MEDIUM_CMD 512
69			#define BIG_CMD 32768
70	lefcha	1.9
71	lefcha	1.35	/* Store IMAP command type may replace,add or remove flags. */
72			#define STORE_FLAG_REPLACE 1
73			#define STORE_FLAG_ADD 2
74			#define STORE_FLAG_REMOVE 3
75
76	lefcha	1.9	/* Buffer size of server's response. */
77	lefcha	1.21	#define RESPONSE_BUF (4096 + 1)
78	lefcha	1.20	#define RESULT_BUF 512
79	lefcha	1.9
80	lefcha	1.16	/* Response codes. */
81	lefcha	1.44	#define RESPONSE_NULLBODY -2
82			#define RESPONSE_NONE -1
83	lefcha	1.16	#define RESPONSE_OK 0
84			#define RESPONSE_NO 1
85	lefcha	1.44	#define RESPONSE_BAD 2
86			#define RESPONSE_BYE 3
87			#define RESPONSE_PREAUTH 4
88			#define RESPONSE_READONLY 5
89			#define RESPONSE_TRYCREATE 6
90	lefcha	1.16
91	lefcha	1.39	/* Size virtual buffer. */
92			#define VIRTUAL_BUF 4096
93	lefcha	1.9
94	lefcha	1.48	/* Authentication mechanisms string. */
95			#define AUTH_MECH_LEN 512
96
97	lefcha	1.25	/* Length of mailbox namespace prefix. */
98			#define NAMESPACE_PREFIX_LEN 64
99
100	lefcha	1.26	/* Encryption and decryption buffers. */
101			#define ENCRYPTION_BUF 1024
102			#define DECRYPTION_BUF 4096
103
104	lefcha	1.35	/* Buffer to save flags of the store IMAP command. */
105			#define STORE_FLAGS_BUF 64
106
107	lefcha	1.27	/* Maximum passwords the password editor can handle. */
108	lefcha	1.32	#define EDITOR_PASSWORDS_MAX 64
109	lefcha	1.27
110	lefcha	1.47	/* Lenght of charset for IMAP SEARCH requests. */
111			#define CHARSET_LEN 64
112
113	lefcha	1.1
114			#define min(A, B) ((A) < (B) ? (A) : (B))
115	lefcha	1.15	#define plural(A) ((A) == 1 ? "" : "s")
116	lefcha	1.1
117
118	lefcha	1.27	/* Secure memory information. */
119			typedef struct secmem {
120			void buf; / Allocated memory buffer. */
121			size_t size; /* Size of the buffer. */
122			struct secmem prev, next; /* Previous/next node of doubly linked list. */
123			} secmem_t;
124
125
126	lefcha	1.32	/* Namespace of IMAP mailboxes. */
127			typedef struct namesp {
128			char prefix[NAMESPACE_PREFIX_LEN];
129			char delim;
130			} namesp_t;
131
132
133	lefcha	1.9	/* file.c */
134	lefcha	1.27	int read_config(char *cfg);
135			int parse_config(FILE * fd);
136			void set_options(char line, regmatch_t match);
137
138			int read_passwords(void);
139			int parse_passwords(FILE * fd);
140			int store_passwords(account_t * accts[]);
141
142	lefcha	1.25	int create_homedir(void);
143	lefcha	1.26	int exists_file(char *fname);
144			int exists_dir(char *fname);
145	lefcha	1.25	int create_file(char *fname, mode_t mode);
146	lefcha	1.9	#ifdef CHECK_PERMISSIONS
147	lefcha	1.25	int check_file_perms(char *fname, mode_t mode);
148			int check_dir_perms(char *dname, mode_t mode);
149	lefcha	1.9	#endif
150	lefcha	1.1
151	lefcha	1.9	/* imapfilter.c */
152			void usage(void);
153	lefcha	1.43	void version(void);
154	lefcha	1.1
155	lefcha	1.9	/* imap.c */
156	lefcha	1.32	unsigned int send_command(int sock, char cmd);
157	lefcha	1.9	#ifdef DEBUG
158	lefcha	1.32	int imap_noop(int *sock);
159	lefcha	1.9	#endif
160	lefcha	1.32	int imap_capability(int *sock);
161			int imap_namespace(int *sock);
162			int imap_logout(int *sock);
163	lefcha	1.48	int imap_authenticate(int sock, char auth);
164	lefcha	1.32	int imap_login(int sock, char user, char *pass);
165			/* int imap_list(int sock, char refer, char mbox); /
166			int imap_subscribe(int sock, char mbox);
167			int imap_examine(int sock, char mbox);
168			int imap_select(int sock, char mbox);
169			int imap_status(int sock, char mbox, char *items);
170			int imap_create(int sock, char mbox);
171	lefcha	1.47	int imap_search(int sock, char charset, char *search);
172	lefcha	1.32	int imap_fetch(int sock, char mesg, char *items);
173	lefcha	1.35	int imap_store(int sock, char mesg, unsigned int mode, char *flags);
174	lefcha	1.32	int imap_copy(int sock, char mesg, char *mbox);
175			int imap_append(int sock, char mbox, unsigned int size);
176			int imap_close(int *sock);
177	lefcha	1.34	int imap_expunge(int *sock);
178	lefcha	1.29
179			/* lock.c */
180			void lockfile_create(void);
181			void lockfile_check(void);
182	lefcha	1.30	pid_t lockfile_pid(void);
183	lefcha	1.29	int lockfile_remove(void);
184	lefcha	1.30	void kill_imapfilter(void);
185	lefcha	1.9
186			/* log.c */
187	lefcha	1.13	void info(const char *info,...);
188			void verbose(const char *info,...);
189			void error(const char *errmsg,...);
190			void fatal(unsigned int errnum, const char *fatal,...);
191	lefcha	1.22	void catch_signals(void);
192			void signal_handler(int sig);
193	lefcha	1.9	int open_logfile(void);
194			int create_logfile(void);
195			int close_logfile(void);
196	lefcha	1.12	void log_info(int flag, void *ptr);
197	lefcha	1.11	char *get_time(void);
198	lefcha	1.9
199	lefcha	1.13	/* memory.c */
200			void *xmalloc(size_t size);
201	lefcha	1.19	void xrealloc(void ptr, size_t size);
202	lefcha	1.26	void xfree(void *ptr);
203	lefcha	1.13	char xstrdup(const char s);
204
205	lefcha	1.27	void *smalloc(size_t size);
206			void srealloc(void ptr, size_t size);
207			void sfree(void *ptr);
208			char sstrdup(const char s);
209	lefcha	1.34	void secmem_append(secmem_t * node);
210	lefcha	1.27	secmem_t secmem_find(void ptr);
211	lefcha	1.34	void secmem_remove(secmem_t * node);
212	lefcha	1.27	void secmem_clear(void);
213	lefcha	1.41	#ifdef MEMORY_LOCK
214	lefcha	1.30	void secmem_lock(void);
215	lefcha	1.41	#endif
216	lefcha	1.27	void corefile_disable(void);
217
218	lefcha	1.16	/* misc.c */
219			char strcasestr(const char haystack, const char *needle);
220			char *ultostr(unsigned long int num, int base);
221	lefcha	1.24	char xstrncpy(char dest, const char *src, size_t size);
222	lefcha	1.16
223	lefcha	1.25	/* passwd.c */
224	lefcha	1.26	void get_password(char *passwd, size_t pwlen);
225			#ifdef ENCRYPTED_PASSWORDS
226	lefcha	1.34	int encrypt_passwords(FILE * fd, account_t * accts[]);
227			int decrypt_passwords(unsigned char *buf, FILE fd);
228	lefcha	1.26	void password_editor(void);
229			#endif
230	lefcha	1.25
231	lefcha	1.9	/* request.c */
232	lefcha	1.32	int test(int *sock);
233			int check_capabilities(int *sock);
234	lefcha	1.34	int check_namespace(int sock, namesp_t nsp);
235	lefcha	1.32	int login(int sock, char user, char *pass);
236	lefcha	1.34	int check_mailbox(int sock, char mbox, namesp_t * nsp);
237			int select_mailbox(int sock, char mbox, namesp_t * nsp);
238			int mailbox_status(int sock, char mbox, namesp_t * nsp);
239	lefcha	1.32	int close_mailbox(int *sock);
240			int logout(int *sock);
241	lefcha	1.9
242	lefcha	1.16	int apply_filters(filter_t ** filters);
243	lefcha	1.19	int match_filter(filter_t * filter, char **mesgs);
244	lefcha	1.9
245			void empty_fifo(mask_t ** mfifo);
246	lefcha	1.11	void queue_fifo(mask_t ** mfifo, mask_t * mask);
247			mask_t dequeue_fifo(mask_t * mfifo);
248	lefcha	1.9
249	lefcha	1.32	char generate_filter_and(mask_t mask, unsigned int masknum,
250	lefcha	1.34	unsigned int masklen);
251			char generate_filter_or(mask_t mask, unsigned int masknum,
252	lefcha	1.32	unsigned int masklen);
253	lefcha	1.9
254	lefcha	1.34	int apply_action(char mesgs, unsigned int type, account_t * raccount,
255	lefcha	1.35	char destmbox, unsigned int msgflags, char *args);
256	lefcha	1.9	int action_delete(char mesgs, char args);
257	lefcha	1.11	int action_copy(char mesgs, char destmbox, char *args);
258			int action_move(char mesgs, char destmbox, char *args);
259	lefcha	1.34	int action_rcopy(char mesgs, account_t destacc, char destmbox, char args);
260			int action_rmove(char mesgs, account_t destacc, char destmbox, char args);
261	lefcha	1.35	int action_flag(char mesgs, unsigned int type, unsigned int msgflags, char args);
262	lefcha	1.11	int action_list(char mesgs, char args);
263	lefcha	1.9
264	lefcha	1.32	unsigned int count_messages(char *mesgs);
265	lefcha	1.33	char convert_messages(char mesgs);
266	lefcha	1.32
267	lefcha	1.9
268	lefcha	1.11	/* response.c */
269	lefcha	1.32	void receive_response(int sock, char buf);
270			int server_response(int *sock, unsigned int tag);
271	lefcha	1.40	void bye_response(char *buf);
272	lefcha	1.32	int greeting_response(int *sock);
273	lefcha	1.39	int logout_response(int *sock, unsigned int tag);
274	lefcha	1.32	int capability_response(int *sock, unsigned int tag);
275	lefcha	1.48	void auth_mechanisms(void);
276	lefcha	1.34	int namespace_response(int sock, unsigned int tag, namesp_t nsp);
277	lefcha	1.32	int status_response(int sock, unsigned int tag, char mbox);
278			int select_response(int *sock, unsigned int tag);
279			int search_response(int sock, unsigned int tag, char *mesgs);
280	lefcha	1.43	int fetch_response(int sock, unsigned int tag, int reset, char fetch);
281	lefcha	1.32	int fetchsize_response(int sock, unsigned int size, unsigned int tag);
282			int append_response(int *sock, unsigned int tag);
283			int copy_response(int *sock, unsigned int tag);
284	lefcha	1.20	int analyze_response(char *buf);
285	lefcha	1.32	void init_vbuf(void);
286			void reset_vbuf(void);
287			void check_vbuf(size_t n);
288	lefcha	1.25
289			/* socket.c */
290	lefcha	1.32	int init_connection(int sock, char serv, unsigned short int port,
291	lefcha	1.34	unsigned int protocol);
292	lefcha	1.32	int ssl_init(int *sock, unsigned int protocol);
293			int close_connection(int *sock);
294			int socket_read(int sock, char buf);
295			int socket_write(int sock, char data);
296	lefcha	1.25
297			/* tty.c */
298			int tty_store(void);
299			int tty_disable_echo(void);
300			int tty_restore(void);
301	lefcha	1.11
302	lefcha	1.13	#endif /* IMAPFILTER_H */