| 1 |
#include <stdio.h> |
| 2 |
#include <stdlib.h> |
| 3 |
#include <sys/types.h> |
| 4 |
#include <unistd.h> |
| 5 |
#include <string.h> |
| 6 |
#include <errno.h> |
| 7 |
#include <limits.h> |
| 8 |
#include <fcntl.h> |
| 9 |
#include <setjmp.h> |
| 10 |
#include <locale.h> |
| 11 |
|
| 12 |
#include "config.h" |
| 13 |
#include "imapfilter.h" |
| 14 |
#include "version.h" |
| 15 |
#include "account.h" |
| 16 |
#include "filter.h" |
| 17 |
#include "buffer.h" |
| 18 |
|
| 19 |
#if defined SSL_TLS || defined ENCRYPTED_PASSWORDS || defined CRAM_MD5 |
| 20 |
#include <openssl/opensslv.h> |
| 21 |
#include <openssl/crypto.h> |
| 22 |
#endif |
| 23 |
|
| 24 |
|
| 25 |
extern account_t *accounts; |
| 26 |
extern filter_t *filters; |
| 27 |
extern buffer_t ibuf, obuf; |
| 28 |
|
| 29 |
options_t opts; /* Program opts. */ |
| 30 |
unsigned int flags = 0; /* Program flags. */ |
| 31 |
|
| 32 |
connection_t connpri, connaux; /* Primary and auxiliary IMAP connection. */ |
| 33 |
|
| 34 |
char *home = NULL; /* User's home directory. */ |
| 35 |
|
| 36 |
jmp_buf acctloop; /* Non-local exit in case of network error. */ |
| 37 |
|
| 38 |
|
| 39 |
void imapfilter(void); |
| 40 |
void daemonize(void); |
| 41 |
void usage(void); |
| 42 |
void version(void); |
| 43 |
|
| 44 |
|
| 45 |
/* |
| 46 |
* IMAPFilter: an IMAP mail filtering utility. |
| 47 |
*/ |
| 48 |
int |
| 49 |
main(int argc, char *argv[]) |
| 50 |
{ |
| 51 |
int c; |
| 52 |
char *cf; |
| 53 |
|
| 54 |
setlocale(LC_ALL, ""); |
| 55 |
|
| 56 |
opts.debug = 0; |
| 57 |
opts.verbosity = 0; |
| 58 |
opts.timeout = -1; |
| 59 |
opts.daemon = 0; |
| 60 |
opts.headers = 0; |
| 61 |
opts.errors = 0; |
| 62 |
opts.namespace = 1; |
| 63 |
opts.expunge = 0; |
| 64 |
opts.subscribe = 0; |
| 65 |
opts.peek = 1; |
| 66 |
opts.passwd_editor = 0; |
| 67 |
opts.charset[0] = '\0'; |
| 68 |
opts.logfile[0] = '\0'; |
| 69 |
|
| 70 |
home = getenv("HOME"); |
| 71 |
cf = NULL; |
| 72 |
connpri.sock = connaux.sock = -1; |
| 73 |
|
| 74 |
while ((c = getopt(argc, argv, "DVc:d:kl:" |
| 75 |
#ifdef ENCRYPTED_PASSWORDS |
| 76 |
"p" |
| 77 |
#endif |
| 78 |
"qv")) != -1) { |
| 79 |
switch (c) { |
| 80 |
case 'D': |
| 81 |
if (opts.debug < 2) |
| 82 |
opts.debug++; |
| 83 |
break; |
| 84 |
case 'V': |
| 85 |
version(); |
| 86 |
/* NOTREACHED */ |
| 87 |
case 'c': |
| 88 |
cf = optarg; |
| 89 |
break; |
| 90 |
case 'd': |
| 91 |
errno = 0; |
| 92 |
opts.daemon = strtoul(optarg, NULL, 10); |
| 93 |
if (errno) |
| 94 |
opts.daemon = 0; |
| 95 |
break; |
| 96 |
case 'k': |
| 97 |
kill_imapfilter(); |
| 98 |
break; |
| 99 |
case 'l': |
| 100 |
strncat(opts.logfile, optarg, PATH_MAX - 1); |
| 101 |
break; |
| 102 |
#ifdef ENCRYPTED_PASSWORDS |
| 103 |
case 'p': |
| 104 |
opts.passwd_editor = 1; |
| 105 |
break; |
| 106 |
#endif |
| 107 |
case 'q': |
| 108 |
if (opts.verbosity > -2) |
| 109 |
opts.verbosity--; |
| 110 |
break; |
| 111 |
case 'v': |
| 112 |
if (opts.verbosity < 2) |
| 113 |
opts.verbosity++; |
| 114 |
break; |
| 115 |
default: |
| 116 |
case '?': |
| 117 |
usage(); |
| 118 |
/* NOTREACHED */ |
| 119 |
} |
| 120 |
} |
| 121 |
|
| 122 |
debug_start(); |
| 123 |
|
| 124 |
create_homedir(); |
| 125 |
|
| 126 |
lockfile_check(); |
| 127 |
lockfile_create(); |
| 128 |
|
| 129 |
if (!opts.debug) |
| 130 |
corefile_disable(); |
| 131 |
|
| 132 |
tty_store(); |
| 133 |
catch_signals(); |
| 134 |
|
| 135 |
read_config(cf); |
| 136 |
|
| 137 |
#ifdef ENCRYPTED_PASSWORDS |
| 138 |
read_passwords(); |
| 139 |
|
| 140 |
if (opts.passwd_editor) { |
| 141 |
password_editor(); |
| 142 |
|
| 143 |
secmem_clear(); |
| 144 |
lockfile_remove(); |
| 145 |
|
| 146 |
exit(0); |
| 147 |
} |
| 148 |
#endif |
| 149 |
|
| 150 |
log_start(); |
| 151 |
|
| 152 |
buffer_init(&ibuf); |
| 153 |
buffer_init(&obuf); |
| 154 |
|
| 155 |
if (opts.daemon) |
| 156 |
opts.verbosity = -2; |
| 157 |
|
| 158 |
do { |
| 159 |
imapfilter(); |
| 160 |
|
| 161 |
if (opts.daemon && !(flags & FLAG_DAEMON)) |
| 162 |
daemonize(); |
| 163 |
if (opts.daemon && flags & FLAG_SIGUSR1) { |
| 164 |
reread_config(cf); |
| 165 |
continue; |
| 166 |
} |
| 167 |
if (opts.daemon > 0) |
| 168 |
sleep(opts.daemon); |
| 169 |
} while (opts.daemon); |
| 170 |
|
| 171 |
log_stop(); |
| 172 |
secmem_clear(); |
| 173 |
|
| 174 |
lockfile_remove(); |
| 175 |
|
| 176 |
debug_stop(); |
| 177 |
|
| 178 |
exit(0); |
| 179 |
} |
| 180 |
|
| 181 |
|
| 182 |
/* |
| 183 |
* Go through all accounts and apply filters to mailboxes as defined. |
| 184 |
*/ |
| 185 |
void |
| 186 |
imapfilter(void) |
| 187 |
{ |
| 188 |
int r; |
| 189 |
account_t *ca; |
| 190 |
mbox_t *cm; |
| 191 |
|
| 192 |
for (ca = accounts; ca != NULL; ca = ca->next) { |
| 193 |
|
| 194 |
if (setjmp(acctloop)) |
| 195 |
continue; |
| 196 |
|
| 197 |
if (init_connection(&connpri, ca->server, ca->port, |
| 198 |
ca->ssl)) |
| 199 |
continue; |
| 200 |
|
| 201 |
r = response_greeting(&connpri); |
| 202 |
|
| 203 |
if (opts.debug) |
| 204 |
test(&connpri); |
| 205 |
|
| 206 |
if (check_capabilities(&connpri)) |
| 207 |
continue; |
| 208 |
|
| 209 |
#ifdef SSL_TLS |
| 210 |
if (ca->ssl == SSL_DISABLED && |
| 211 |
connpri.caps & CAPS_STARTTLS) |
| 212 |
if (negotiate_tls(&connpri) == RESPONSE_OK) |
| 213 |
check_capabilities(&connpri); |
| 214 |
#endif |
| 215 |
|
| 216 |
log_info(LOG_ACCOUNT, ca->key); |
| 217 |
|
| 218 |
if (r != RESPONSE_PREAUTH) { |
| 219 |
if (ca->pass_attr == PASS_ATTR_NONE) { |
| 220 |
printf("Enter password for %s@%s: ", |
| 221 |
ca->user, ca->server); |
| 222 |
get_password(ca->pass, PASS_LEN); |
| 223 |
ca->pass_attr = PASS_ATTR_PLAIN; |
| 224 |
} |
| 225 |
#ifdef CRAM_MD5 |
| 226 |
if (connpri.caps & CAPS_CRAMMD5) |
| 227 |
r = auth_cram_md5(&connpri, |
| 228 |
ca->user, ca->pass); |
| 229 |
else |
| 230 |
#endif |
| 231 |
r = login(&connpri, ca->user, |
| 232 |
ca->pass); |
| 233 |
|
| 234 |
if (r == RESPONSE_NO) { |
| 235 |
error("username %s or password rejected " |
| 236 |
"at %s\n", ca->user, ca->server); |
| 237 |
continue; |
| 238 |
} |
| 239 |
} |
| 240 |
check_namespace(&connpri); |
| 241 |
|
| 242 |
for (cm = ca->mboxes; cm != NULL; cm = cm->next) |
| 243 |
if (*cm->filters == NULL) |
| 244 |
mailbox_status(&connpri, cm->name); |
| 245 |
else if (!select_mailbox(&connpri, cm->name)) { |
| 246 |
apply_filters(cm->name, cm->filters); |
| 247 |
close_mailbox(&connpri); |
| 248 |
} |
| 249 |
logout(&connpri); |
| 250 |
|
| 251 |
close_connection(&connpri); |
| 252 |
} |
| 253 |
} |
| 254 |
|
| 255 |
|
| 256 |
/* |
| 257 |
* Fork if in daemon mode. |
| 258 |
*/ |
| 259 |
void |
| 260 |
daemonize(void) |
| 261 |
{ |
| 262 |
|
| 263 |
switch (fork()) { |
| 264 |
case -1: |
| 265 |
fatal(ERROR_FORK, "forking; %s\n", |
| 266 |
strerror(errno)); |
| 267 |
break; |
| 268 |
case 0: |
| 269 |
break; |
| 270 |
default: |
| 271 |
log_stop(); |
| 272 |
secmem_clear(); |
| 273 |
debug_stop(); |
| 274 |
exit(0); |
| 275 |
break; |
| 276 |
} |
| 277 |
|
| 278 |
if (setsid() == -1) |
| 279 |
fatal(ERROR_FORK, "creating session; %s\n", |
| 280 |
strerror(errno)); |
| 281 |
|
| 282 |
switch (fork()) { |
| 283 |
case -1: |
| 284 |
fatal(ERROR_FORK, "forking; %s\n", |
| 285 |
strerror(errno)); |
| 286 |
break; |
| 287 |
case 0: |
| 288 |
break; |
| 289 |
default: |
| 290 |
log_stop(); |
| 291 |
secmem_clear(); |
| 292 |
debug_stop(); |
| 293 |
exit(0); |
| 294 |
break; |
| 295 |
} |
| 296 |
|
| 297 |
close(STDIN_FILENO); |
| 298 |
close(STDOUT_FILENO); |
| 299 |
close(STDERR_FILENO); |
| 300 |
if (open("/dev/null", O_RDWR) != -1) { |
| 301 |
dup(STDIN_FILENO); |
| 302 |
dup(STDIN_FILENO); |
| 303 |
} |
| 304 |
lockfile_create(); |
| 305 |
corefile_disable(); |
| 306 |
|
| 307 |
flags |= FLAG_DAEMON; |
| 308 |
} |
| 309 |
|
| 310 |
|
| 311 |
/* |
| 312 |
* Print a very brief usage message. |
| 313 |
*/ |
| 314 |
void |
| 315 |
usage(void) |
| 316 |
{ |
| 317 |
|
| 318 |
fprintf(stderr, |
| 319 |
"usage: imapfilter [-DVbk" |
| 320 |
#ifdef ENCRYPTED_PASSWORDS |
| 321 |
"p" |
| 322 |
#endif |
| 323 |
"qv] [-c configfile] [-d interval] [-l logfile]\n"); |
| 324 |
|
| 325 |
exit(ERROR_UNDEFINED); |
| 326 |
} |
| 327 |
|
| 328 |
|
| 329 |
/* |
| 330 |
* Print program's version, and if it is built in, OpenSSL's version number. |
| 331 |
*/ |
| 332 |
void |
| 333 |
version(void) |
| 334 |
{ |
| 335 |
|
| 336 |
fprintf(stderr, "IMAPFilter %s" |
| 337 |
#if defined SSL_TLS || defined ENCRYPTED_PASSWORDS || defined CRAM_MD5 |
| 338 |
", OpenSSL 0x%8.8lx" |
| 339 |
#endif |
| 340 |
"\n", IMAPFILTER_VERSION |
| 341 |
#if defined SSL_TLS || defined ENCRYPTED_PASSWORDS || defined CRAM_MD5 |
| 342 |
,SSLeay() |
| 343 |
#endif |
| 344 |
); |
| 345 |
|
| 346 |
exit(ERROR_UNDEFINED); |
| 347 |
} |
Parent Directory
| 
Revision Log