April 2007 - dovecot - dovecot.org

[Dovecot] mbox bug in 1.0.0
by bhayden＠umn.edu 01 Aug '07

01 Aug '07

Hi folks. We're moving users from rc24 and 27 to 1.0.0. On four mailboxes so far we've seen these errors after the move (quick and dirty anonymizing follows): Apr 23 13:22:41 server.umn.edu dovecot: [ID 107833 local6.info] imap-login: Login: user=<USER>, pid=<9046>, method=PLAIN, rip=***.***.***.***, lip=***.***.***.***, TLS Apr 23 13:22:41 server.umn.edu dovecot: [ID 107833 local6.error] [9073] IMAP(USER): mbox /var/mail/user: seq=1 uid=8808 uid_broken=0 originally needed 10 bytes, now needs 23 bytes Apr 23 13:22:41 server.umn.edu dovecot: [ID 107833 local6.error] [9073] IMAP(USER): Raw backtrace: 0x7b800 -> 0x43434 -> 0x3e018 -> 0x3fc34 -> 0x40080 -> 0x6d3cc -> 0x29a88 -> 0x21324 -> 0x214c0 -> 0x22f48 -> 0x22ec0 -> 0x230c0 -> 0x81c18 -> 0x814e4 -> 0x2b5cc -> 0x1dc58 Points of interest: 1. I can't reproduce this. It still happens after the user's .imap directories are removed. If I make a copy of the mailbox on another machine running the same version of Dovecot with the same config, the problem doesn't occur. Weird. 2. So far, have only seen it on quite large mailboxes (close to or over 100MB). Most large boxes have not had the problem, but the ones that have are all large. Any thoughts? Dovecot -n output below. -Brian Hayden OIT Internet Services U of Minnesota # dovecot -n # /etc/opt/dovecot/dovecot.conf syslog_facility: local6 protocols: imap imaps pop3 pop3s listen(default): *:143 listen(imap): *:143 listen(pop3): *:110 ssl_listen(default): *:993 ssl_listen(imap): *:993 ssl_listen(pop3): *:995 ssl_cert_file: /etc/opt/openssl/certs/dovecot.pem ssl_key_file: /etc/opt/openssl/private/dovecot.pem shutdown_clients: no login_dir: /var/opt/dovecot/run/dovecot/login login_executable(default): /opt/dovecot/libexec/dovecot/imap-login login_executable(imap): /opt/dovecot/libexec/dovecot/imap-login login_executable(pop3): /opt/dovecot/libexec/dovecot/pop3-login login_log_format_elements: user=<%u> pid=<%p> method=%m rip=%r lip=%l %c login_processes_count: 32 login_max_processes_count: 4096 max_mail_processes: 8192 first_valid_uid: 100 default_mail_env: mbox:~/:INBOX=/var/mail/%u mail_location: mbox:~/:INBOX=/var/mail/%u mail_full_filesystem_access: yes mbox_lazy_writes: no mail_executable(default): /opt/dovecot/libexec/dovecot/imap mail_executable(imap): /opt/dovecot/libexec/dovecot/imap mail_executable(pop3): /opt/dovecot/libexec/dovecot/pop3 mail_plugin_dir(default): /opt/dovecot/lib/dovecot/imap mail_plugin_dir(imap): /opt/dovecot/lib/dovecot/imap mail_plugin_dir(pop3): /opt/dovecot/lib/dovecot/pop3 mail_log_prefix: [%p] %Us(%u): imap_client_workarounds(default): delay-newmail outlook-idle tb-extra-mailbox-sep imap_client_workarounds(imap): delay-newmail outlook-idle tb-extra-mailbox-sep imap_client_workarounds(pop3): outlook-idle pop3_uidl_format(default): pop3_uidl_format(imap): pop3_uidl_format(pop3): %08Xu%08Xv namespace: type: private separator: / location: mbox:~/:INBOX=/var/mail/%u inbox: yes hidden: yes auth default: username_format: %Lu verbose: yes debug: yes passdb: driver: pam args: session=yes * userdb: driver: passwd

2 4

[Dovecot] quota warning - take 2
by Nicolas Boullis 16 Jul '07

16 Jul '07

Hi, About one month ago, I sent a patch to this list to implement warnings when a user is close to reach his quota. I tried to follow Timo's advice to improve my code, and here (at last) is a new patch. Things I did not fix: - This patch is still for dovecot 1.0, as I will need warnings with dovecot 1.0. I may rewrite it for CVS HEAD in the future but can't promise. - I'm still using system() rather than fork()+exec()+waitpid() since I don't know a good time to run waitpid(). Comments are welcome. Timo, will you consider to add this to your unofficial patches? Cheers, Nicolas Boullis

3 5

[Dovecot] PHP implementation of dovecotpw passwords
by Frank Church 09 Jul '07

09 Jul '07

I am looking for PHP functions that implement passwords that much the dovecotpw implementation. I downloaded one from PEAR, Crypt_HMAC, but the passwords it generates look nothing like the dovecotpw passwords, which could be my fault because I know nothing about the field. Is there a guide or some library that implements them to match dovecotpw?

4 4

[Dovecot] Semi-static userdb...?
by John Robinson 03 Jul '07

03 Jul '07

I'm trying to add "virtual" mailboxes to a system. Real users with different uids own domains. Each domain has a passwd-file passdb. I don't want to use this passwd-file for the userdb, because I want to fix the home, mail and uid/gid settings. Can I use the static userdb in a less static manner, e.g. userdb static { args = uid=%{owner of /vmail/%d} gid=%{gid of /vmail/%d} home=/vmail/%d/users/%u mail=mbox:/vmail/%d/users/%u/mail:INBOX=/vmail/%d/users/%u/INBOX } Or is it just a bad idea to let relatively untrusted domain owners manage their own passwd-file at all...? Cheers, John.

2 4

[Dovecot] 1.0.rc28 released
by Timo Sirainen 27 Jun '07

27 Jun '07

http://dovecot.org/releases/dovecot-1.0.rc28.tar.gz http://dovecot.org/releases/dovecot-1.0.rc28.tar.gz.sig Still a bit more fixes. My coding TODO list is again empty. Unless something special happens in the next few weeks, I'll still make rc29 with the documentation included and v1.0 will be released April 13. * deliver + userdb static: Verify the user's existence from passdb, unless allow_all_users=yes * dovecot --exec-mail: Log to configured log files instead of stderr * Added "-example" part to doc/dovecot-sql-example.conf and doc/dovecot-ldap-example.conf. They are now also installed to $sysconfdir with "make install". + When copying/syncing a lot of mails, send "* OK Hang in there" replies to client every 15 seconds so it doesn't just timeout the connection. + Added idxview and logview utilities to examine Dovecot's index files + passdb passwd and shadow support blocking=yes setting now also + mbox: If mbox file changes unexpectedly while we're writing to it, log an error. + deliver: Ignore -m "" parameter to make calling it easier. + deliver: Added new -n parameter to disable autocreating mailboxes. It affects both -m parameter and Sieve plugin's fileinto action - mbox: Using ~/ in the mail root directory caused a ~ directory to be created (instead of expanding it to home directory) - auth cache: If unknown user was found from cache, we didn't properly return "unknown user" status, which could have caused problems in deliver. - mbox: Fixed "UID inserted in the middle of mailbox" in some conditions with broken X-UID headers - Index view syncing fixes - rc27 didn't compile with some non-GCC compilers - vpopmail support didn't compile in rc27 - NFS check with chrooting broke home direcotry for the first login - deliver: If user lookup returned "unknown user", it logged "BUG: Unexpected input" - convert plugin didn't convert INBOX

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[Dovecot] SHA256 password patch
by Jasper Slits 16 Jun '07

16 Jun '07

Hi, I made a patch against branch-1.0 for SHA256 password hashing support for Dovecot. Courier Authlib supports this hashing scheme and in order to migrate from Courier to Dovecot, I've added SHA256 support to Dovecot. The attached patch is based on BSD licensed code from Olivier Gay (http://www.ouah.org/ogay/sha2/). Changes made by me in Olivier's sha2{.h,.c} code: - Prototype for sha256_transf is added to sha2.h - sha256_get_digest() is added to sha2{.h,.c} - Code for UNROLL_LOOPS is removed - Support for SHA224,SHA384,SHA512 was removed - Functions are renamed to match those in sha1{.h,.c} - SHA256_DIGEST_SIZE is renamed to SHA256_RESULTLEN I can add safe_memset calls if requested. Patch is attached and can also be found at http://www.malochia.nl/dovecot/sha256.patch Kind regards, Jasper diff -r -u -N --exclude=Makefile.in --exclude=.deps --exclude=Makefile src/auth/password-scheme.c auth/password-scheme.c --- src/auth/password-scheme.c 2007-02-21 13:30:38.756711250 +0100 +++ auth/password-scheme.c 2007-02-21 14:18:49.645380500 +0100 @@ -10,6 +10,7 @@ #include "mycrypt.h" #include "randgen.h" #include "sha1.h" +#include "sha2.h" #include "str.h" #include "password-scheme.h" @@ -153,6 +154,17 @@ return str_c(str); } +static const char *sha256_generate(const char *plaintext, + const char *user __attr_unused__) +{ + unsigned char digest[SHA256_RESULTLEN]; + string_t *str; + sha256_get_digest(plaintext, strlen(plaintext), digest); + str = t_str_new(MAX_BASE64_ENCODED_SIZE(sizeof(digest)+1)); + base64_encode(digest, sizeof(digest), str); + return str_c(str); +} + static const void * password_decode(const char *password, unsigned int result_len) { @@ -196,6 +208,23 @@ return memcmp(sha1_digest, data, SHA1_RESULTLEN) == 0; } +static bool sha256_verify(const char *plaintext, const char *password, + const char *user) +{ + unsigned char sha256_digest[SHA256_RESULTLEN]; + const char *data; + + sha256_get_digest(plaintext, strlen(plaintext), sha256_digest); + + data = password_decode(password, SHA256_RESULTLEN); + if (data == NULL) { + i_error("sha256_verify(%s): Invalid password encoding", user); + return 0; + } + + return memcmp(sha256_digest, data, SHA256_RESULTLEN) == 0; +} + static const char *ssha_generate(const char *plaintext, const char *user __attr_unused__) { @@ -466,6 +495,7 @@ { "MD5-CRYPT", md5_crypt_verify, md5_crypt_generate }, { "SHA", sha1_verify, sha1_generate }, { "SHA1", sha1_verify, sha1_generate }, + { "SHA256", sha256_verify, sha256_generate }, { "SMD5", smd5_verify, smd5_generate }, { "SSHA", ssha_verify, ssha_generate }, { "PLAIN", plain_verify, plain_generate }, diff -r -u -N --exclude=Makefile.in --exclude=.deps --exclude=Makefile src/lib/Makefile.am lib/Makefile.am --- src/lib/Makefile.am 2007-02-21 13:30:38.792713500 +0100 +++ lib/Makefile.am 2007-02-21 14:21:59.437241750 +0100 @@ -73,6 +73,7 @@ sendfile-util.c \ seq-range-array.c \ sha1.c \ + sha2.c \ str.c \ str-sanitize.c \ strescape.c \ @@ -146,6 +147,7 @@ sendfile-util.h \ seq-range-array.h \ sha1.h \ + sha2.h \ str.h \ str-sanitize.h \ strescape.h \ diff -r -u -N --exclude=Makefile.in --exclude=.deps --exclude=Makefile src/lib/sha2.c lib/sha2.c --- src/lib/sha2.c 1970-01-01 01:00:00.000000000 +0100 +++ lib/sha2.c 2007-02-23 14:03:46.857739818 +0100 @@ -0,0 +1,257 @@ +/* + * FIPS 180-2 SHA-224/256/384/512 implementation + * Last update: 02/02/2007 + * Issue date: 04/30/2005 + * + * Copyright (C) 2005, 2007 Olivier Gay <olivier.gay(a)a3.epfl.ch> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the project nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <string.h> + +#include "sha2.h" + +#define SHFR(x, n) (x >> n) +#define ROTR(x, n) ((x >> n) | (x << ((sizeof(x) << 3) - n))) +#define ROTL(x, n) ((x << n) | (x >> ((sizeof(x) << 3) - n))) +#define CH(x, y, z) ((x & y) ^ (~x & z)) +#define MAJ(x, y, z) ((x & y) ^ (x & z) ^ (y & z)) + +#define SHA256_F1(x) (ROTR(x, 2) ^ ROTR(x, 13) ^ ROTR(x, 22)) +#define SHA256_F2(x) (ROTR(x, 6) ^ ROTR(x, 11) ^ ROTR(x, 25)) +#define SHA256_F3(x) (ROTR(x, 7) ^ ROTR(x, 18) ^ SHFR(x, 3)) +#define SHA256_F4(x) (ROTR(x, 17) ^ ROTR(x, 19) ^ SHFR(x, 10)) + +#define UNPACK32(x, str) \ +{ \ + *((str) + 3) = (uint8) ((x) ); \ + *((str) + 2) = (uint8) ((x) >> 8); \ + *((str) + 1) = (uint8) ((x) >> 16); \ + *((str) + 0) = (uint8) ((x) >> 24); \ +} + +#define PACK32(str, x) \ +{ \ + *(x) = ((uint32) *((str) + 3) ) \ + | ((uint32) *((str) + 2) << 8) \ + | ((uint32) *((str) + 1) << 16) \ + | ((uint32) *((str) + 0) << 24); \ +} + +#define UNPACK64(x, str) \ +{ \ + *((str) + 7) = (uint8) ((x) ); \ + *((str) + 6) = (uint8) ((x) >> 8); \ + *((str) + 5) = (uint8) ((x) >> 16); \ + *((str) + 4) = (uint8) ((x) >> 24); \ + *((str) + 3) = (uint8) ((x) >> 32); \ + *((str) + 2) = (uint8) ((x) >> 40); \ + *((str) + 1) = (uint8) ((x) >> 48); \ + *((str) + 0) = (uint8) ((x) >> 56); \ +} + +#define PACK64(str, x) \ +{ \ + *(x) = ((uint64) *((str) + 7) ) \ + | ((uint64) *((str) + 6) << 8) \ + | ((uint64) *((str) + 5) << 16) \ + | ((uint64) *((str) + 4) << 24) \ + | ((uint64) *((str) + 3) << 32) \ + | ((uint64) *((str) + 2) << 40) \ + | ((uint64) *((str) + 1) << 48) \ + | ((uint64) *((str) + 0) << 56); \ +} + +/* Macros used for loops unrolling */ + +#define SHA256_SCR(i) \ +{ \ + w[i] = SHA256_F4(w[i - 2]) + w[i - 7] \ + + SHA256_F3(w[i - 15]) + w[i - 16]; \ +} + + + +uint32 sha256_h0[8] = + {0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a, + 0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19}; + + +uint32 sha256_k[64] = + {0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, + 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5, + 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, + 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174, + 0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, + 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da, + 0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, + 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967, + 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13, + 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85, + 0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, + 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070, + 0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, + 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3, + 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, + 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2}; + + +/* SHA-256 functions */ + +void sha256_transf(sha256_ctx *ctx, const unsigned char *message, + unsigned int block_nb) +{ + uint32 w[64]; + uint32 wv[8]; + uint32 t1, t2; + const unsigned char *sub_block; + int i,j; + + + for (i = 0; i < (int) block_nb; i++) { + sub_block = message + (i << 6); + + for (j = 0; j < 16; j++) { + PACK32(&sub_block[j << 2], &w[j]); + } + + for (j = 16; j < 64; j++) { + SHA256_SCR(j); + } + + for (j = 0; j < 8; j++) { + wv[j] = ctx->h[j]; + } + + for (j = 0; j < 64; j++) { + t1 = wv[7] + SHA256_F2(wv[4]) + CH(wv[4], wv[5], wv[6]) + + sha256_k[j] + w[j]; + t2 = SHA256_F1(wv[0]) + MAJ(wv[0], wv[1], wv[2]); + wv[7] = wv[6]; + wv[6] = wv[5]; + wv[5] = wv[4]; + wv[4] = wv[3] + t1; + wv[3] = wv[2]; + wv[2] = wv[1]; + wv[1] = wv[0]; + wv[0] = t1 + t2; + } + + for (j = 0; j < 8; j++) { + ctx->h[j] += wv[j]; + } + } +} + +void sha256(const unsigned char *message, unsigned int len, unsigned char *digest) +{ + sha256_ctx ctx; + + sha256_init(&ctx); + sha256_loop(&ctx, message, len); + sha256_result(&ctx, digest); +} + +void sha256_init(sha256_ctx *ctx) +{ + int i; + for (i = 0; i < 8; i++) { + ctx->h[i] = sha256_h0[i]; + } + + ctx->len = 0; + ctx->tot_len = 0; +} + +void sha256_loop(sha256_ctx *ctx, const unsigned char *message, + unsigned int len) +{ + unsigned int block_nb; + unsigned int new_len, rem_len, tmp_len; + const unsigned char *shifted_message; + + tmp_len = SHA256_BLOCK_SIZE - ctx->len; + rem_len = len < tmp_len ? len : tmp_len; + + memcpy(&ctx->block[ctx->len], message, rem_len); + + if (ctx->len + len < SHA256_BLOCK_SIZE) { + ctx->len += len; + return; + } + + new_len = len - rem_len; + block_nb = new_len / SHA256_BLOCK_SIZE; + + shifted_message = message + rem_len; + + sha256_transf(ctx, ctx->block, 1); + sha256_transf(ctx, shifted_message, block_nb); + + rem_len = new_len % SHA256_BLOCK_SIZE; + + memcpy(ctx->block, &shifted_message[block_nb << 6], + rem_len); + + ctx->len = rem_len; + ctx->tot_len += (block_nb + 1) << 6; +} + +void sha256_result(sha256_ctx *ctx, unsigned char *digest) +{ + unsigned int block_nb; + unsigned int pm_len; + unsigned int len_b; + int i; + + block_nb = (1 + ((SHA256_BLOCK_SIZE - 9) + < (ctx->len % SHA256_BLOCK_SIZE))); + + len_b = (ctx->tot_len + ctx->len) << 3; + pm_len = block_nb << 6; + + memset(ctx->block + ctx->len, 0, pm_len - ctx->len); + ctx->block[ctx->len] = 0x80; + UNPACK32(len_b, ctx->block + pm_len - 4); + + sha256_transf(ctx, ctx->block, block_nb); + + for (i = 0 ; i < 8; i++) { + UNPACK32(ctx->h[i], &digest[i << 2]); + } +} + +void sha256_get_digest(const void *data, size_t size, + unsigned char result[SHA256_RESULTLEN]) +{ + sha256_ctx ctx; + + sha256_init(&ctx); + sha256_loop(&ctx, data, size); + sha256_result(&ctx, result); +} + diff -r -u -N --exclude=Makefile.in --exclude=.deps --exclude=Makefile src/lib/sha2.h lib/sha2.h --- src/lib/sha2.h 1970-01-01 01:00:00.000000000 +0100 +++ lib/sha2.h 2007-02-23 14:22:32.952116316 +0100 @@ -0,0 +1,72 @@ +/* + * FIPS 180-2 SHA-224/256/384/512 implementation + * Last update: 02/02/2007 + * Issue date: 04/30/2005 + * + * Copyright (C) 2005, 2007 Olivier Gay <olivier.gay(a)a3.epfl.ch> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the project nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef SHA2_H +#define SHA2_H + +#define SHA256_RESULTLEN ( 256 / 8) + +#define SHA256_BLOCK_SIZE ( 512 / 8) + +#ifndef SHA2_TYPES +#define SHA2_TYPES +typedef unsigned char uint8; +typedef unsigned int uint32; +typedef unsigned long long uint64; +#endif + + +typedef struct { + unsigned int tot_len; + unsigned int len; + unsigned char block[2 * SHA256_BLOCK_SIZE]; + uint32 h[8]; +} sha256_ctx; + +void sha256_transf(sha256_ctx *ctx, const unsigned char *message, + unsigned int block_nb); + + +void sha256_init(sha256_ctx * ctx); +void sha256_loop(sha256_ctx *ctx, const unsigned char *message, + unsigned int len); +void sha256_result(sha256_ctx *ctx, unsigned char *digest); +void sha256(const unsigned char *message, unsigned int len, + unsigned char *digest); +void sha256_get_digest(const void *data, size_t size, + unsigned char result[SHA256_RESULTLEN]); + + + +#endif /* !SHA2_H */ +

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[Dovecot] SEGV with Dovecot v1.0.0 Deliver and cmusieve v1.0.1 and vacation
by Steffen Kaiser 16 Jun '07

16 Jun '07

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hello, I have a small Sieve script that tries to use vacation that segfaults. The script is the one from http://wiki.dovecot.org/LDA/Sieve. When I change the email address (I changed the local part into "skai"), hence, vacation is skipped, the mail is delivered without any problem. ==== script start require ["fileinto", "vacation"]; # Move spam to spam folder if exists "X-Spam-Flag" { fileinto "spam"; # Stop here so that we do not reply on spams stop; } vacation # Reply at most once a day to a same sender :days 1 :subject "Out of office reply" # List of allowed recipient addresses from auto reply should be sent. :addresses ["ska(a)ux-2s11-9.inf.fh-bonn-rhein-sieg.de"] "I'm out of office, please contact Joan Doe instead. Best regards John Doe"; ========== END ========== Out of sieved .dovecot.sievec Sievecode version 3 4: IF (ends at 13)exists{11}X-Spam-Flag 13:JUMP 20 19: FILEINTO {4}spam 19: STOP 20: VACATION {39}ska(a)ux-2s11-9.inf.fh-bonn-rhein-sieg.de 40 SUBJ({19}Out of office reply) 60 MESG({73}I'm out of office, please contact Joan Doe instead. Best regards John Doe) DAYS(1) MIME(0) full len is: 62 ========== END gdb output: Core was generated by `/usr/local/dovecot/libexec/dovecot/deliver'. Program terminated with signal 11, Segmentation fault. #0 0xb7eef3a3 in strlen () from /lib/tls/i686/cmov/libc.so.6 (gdb) bt full #0 0xb7eef3a3 in strlen () from /lib/tls/i686/cmov/libc.so.6 No symbol table info available. #1 0xb7e2bcf3 in sieve_execute_bytecode (bc=0x80e3eb0, interp=0x80e3de8, script_context=0xbfb57800, message_context=0xbfb577c4) at script.c:398 hash = "\000\000\000\000¸Z0F\000\000\000\000¸Z0F" actions = (action_list_t *) 0x80e3850 notify_list = (notify_list_t *) 0x80e3830 actions_string = "Action(s) taken:\n", '\0' <repeats 4078 times> errmsg = 0x0 imapflags = {flag = 0x0, nflags = 0} #2 0xb7e1eb2c in cmu_sieve_run (storage=0x80d0a20, mail=0x80e03c8, script_path=0x80cbc48 "/home/ska/.dovecot.sieve", username=0x80cb030 "ska", mailbox=0x80bae92 "INBOX") at sieve-cmu.c:573 fd = <value optimized out> interp = (sieve_interp_t *) 0x80e3de8 bytecode = (sieve_bytecode_t *) 0x80e3eb0 sdata = {username = 0x80cb030 "ska", storage = 0x80d0a20, errors = 0x0} mdata = {mail = 0x80e03c8, mailbox = 0x80bae92 "INBOX", id = 0x80e4860 "<200704260754.l3Q7sWdu002894(a)ux-2s11-9.inf.fh-bonn-rhein-sieg.de>", return_path = 0x0, authuser = 0x80cb030 "ska", temp = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}} compiled_path = 0x80cbc68 "/home/ska/.dovecot.sievec" path = 0xb7fb0ff4 "<Í\022" ret = <value optimized out> #3 0xb7e1da72 in cmusieve_deliver_mail (storage=0x80d0a20, mail=0x80e03c8, username=0x80cb030 "ska", mailbox=0x80bae92 "INBOX") at cmusieve-plugin.c:72 script_path = 0x80cbc48 "/home/ska/.dovecot.sieve" #4 0x08057536 in main (argc=Cannot access memory at address 0x0 ) at deliver.c:679 tab = (struct var_expand_table *) 0x80cb068 config_path = 0x80bb79c "/usr/local/dovecot/etc/dovecot.conf" envelope_sender = 0x80bae98 "MAILER-DAEMON" mailbox = 0x80bae92 "INBOX" auth_socket = <value optimized out> home = <value optimized out> destination = 0x80cb030 "ska" user = 0x80cb030 "ska" mail_env = <value optimized out> flags = 1025 lock_method = MAIL_STORAGE_LOCK_FCNTL storage = (struct mail_storage *) 0x80d0a20 mbox_storage = (struct mail_storage *) 0x80d2d48 box = (struct mailbox *) 0x80dcc88 input = (struct istream *) 0x80d4044 t = (struct mailbox_transaction_context *) 0x80de2a0 mail = (struct mail *) 0x80e03c8 process_euid = 30000 i = 63 ret = <value optimized out> (gdb) - -- Steffen Kaiser -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) iQEVAwUBRjBdji9SORjhbDpvAQICoggAnzLxTlL8mDonntaDvwr/4JN6eWPIAm7o XP6hSw9JlbTsPY55keQMZpN/UNB/FXojcqI6lD4f/2dJqCEHmeB40NQZEMUN+f60 6+BHkE6vb2sMnXa09eQWg2d5zVKp6bHdSsbtzmWIsYX0stUFMncFTJVQgatHstDm DaSGMf6V2SwiPst/0tUbeTMqYhud9LU2YLhU3+T9AuTmcSGztohnJPGnqC1GLP+N m+KLbLF6B7ZMQ2RX+M+arzz8EQRHZ2622aqiLKoT+rVZ8LkLPzp4Whd9HK1MqMld KSjJuZBKgKuJr61SGqPboPOip635DgJH7g2BKgGnOHWvJf6E7U+Q9A== =1M3a -----END PGP SIGNATURE-----

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[Dovecot] Warning about NFS but using local fs for INDEX
by Herbert Gasiorowski 12 Jun '07

12 Jun '07

I am playing around with dovecot and want to use local filesystem for indexing. But whenever I open a new imap connection the following warning is shown: Apr 30 10:14:42 beira dovecot: Mailbox indexes in /app/home/gasi are in NFS mount. You must set mmap_disable=yes to avoid index corruptions. If you're sure this check was wrong, set nfs_check=no. /app/home is a NFS mounted filesystem, but I want dovecot to use /export/dovecot/gasi for indexing (See namespaces below). I shurely can follow the hints(nfs_check=no), but I am not shure if I did something wrong or maybe someday will change the configuration and forget to enable the nfs check. dovecot version: dovecot-1.0-1.2.rc15.el5 on CentOS 5.0 (with all updates). [root@beira etc]# dovecot -n # /etc/dovecot.conf syslog_facility: local6 login_dir: /var/run/dovecot/login login_executable(default): /usr/libexec/dovecot/imap-login login_executable(imap): /usr/libexec/dovecot/imap-login login_executable(pop3): /usr/libexec/dovecot/pop3-login mail_executable(default): /usr/libexec/dovecot/imap mail_executable(imap): /usr/libexec/dovecot/imap mail_executable(pop3): /usr/libexec/dovecot/pop3 mail_plugin_dir(default): /usr/lib/dovecot/imap mail_plugin_dir(imap): /usr/lib/dovecot/imap mail_plugin_dir(pop3): /usr/lib/dovecot/pop3 namespace: type: private separator: / location: mbox:~/Mail:INBOX=/var/spool/mail/%u:INDEX=/export/dovecot/%u inbox: yes namespace: type: private separator: / prefix: #home-tmp/ location: mbox:~:INDEX=/export/dovecot/%u auth default: passdb: driver: pam args: imap userdb: driver: passwd

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[Dovecot] Multiple IP(or Host) listen in dovecot.conf.
by Yoshihiro Kawabe 11 Jun '07

11 Jun '07

Hi. Does someone make update for `Multiple IP(or Host) listen in dovecot.conf'? I made trivial patch so. But this patch doesn't solve `Support listening in multiple sockets' in TODO. It appends only the capability as multiple listen in dovecot.conf. So, `login_processes_count' becomes ambiguous. In CASE1, login_processes_count = 2, forked imap-login processes are 8. -- samples dovecot.conf applied this patch are following. CASE 1: listen = 127.0.0.1, 192.168.0.10, imap-server1, imap-server2.example.com or CASE 2: protocol imap { listen = 127.0.0.1:143, imap-server1:10143 ssl_listen = imap-server2:10943, 127.0.0.1 .. } protocol pop3 { listen = 127.0.0.1, pop-server1:10100 .. } -- Update brief. src/master/ master-setting.h: listen_fd and related members changed to array_t. also name add (s). master-setting.c: few member initialization delete. main.c: handle multiple IP and port, fds as array_t. resolve_ip argment change. login-process.h: add listen_fd and ssl_listen_fd member to login_group structre. login-process.c: add login_groups_create function for mapping login process to each listen fd. change dup2 source fd in create_login_process. src/lib network.c: change getnameinfo error value. -- Kawabe,Yoshihiro <sowhat(a)amnis.co.jp> As the stars blink in the night sky, our married hearts are never splitted. Even if we will unclasp each other hands, until we retain that. by H.S.

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[Dovecot] newbie with dovecot acls needs a little help :-)
by Rachid Zarouali 22 May '07

22 May '07

hy all, i'm trying to make an acl so a local unix user 'sie' can access exalead mboxes. my exalead mboxes are stored in : /opt/exalead/mail/sie/ mailboxes are automatically created every week like sie.2007.W17 for the 17th week of the year. how can i do this ? i've tried several things but none succedded. dovecot version 1.0.rc15 # /etc/dovecot.conf ddIEffective uid=65534, gid=65534 ddILoading modules from directory: /usr/lib64/dovecot/imap ddIModule loaded: /usr/lib64/dovecot/imap/lib01_acl_plugin.so log_path: /var/log/dovecot.log info_log_path: /var/log/dovecot-info.log protocols: imap imaps login_dir: /var/run/dovecot/login login_executable: /usr/libexec/dovecot/imap-login login_greeting_capability: yes mail_extra_groups: exalead mail_location: mbox:/opt/exalead/mail mail_debug: yes mail_plugins: acl auth default: verbose: yes debug: yes passdb: driver: pam userdb: driver: passwd userdb: driver: prefetch socket: type: listen client: master: path: /var/run/dovecot/auth-master mode: 384 user: exalead group: exalead thanks for your help -- Rachid Zarouali Administrateur Systèmes/Applications AFNIC rachid.zarouali(a)nic.fr 01.39.30.83.47

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