isync-brokenservers.diff (Jeremy Katz <katzj@linuxpower.org>)
adds support for disabling NAMESPACE, and disable various flavors of TLS/SSL for use with some broken IMAP servers.
This commit is contained in:
Michael Elkins
parent
04fdf7d120
commit
074298d482
2
README
2
README
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@ -26,6 +26,8 @@ maintained, and all flags are synchronized.
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``isync'' has been tested with the following IMAP servers:
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* Microsoft Exchange 2000 IMAP4rev1 server version 6.0.4417.0
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* Courier-IMAP 1.2.3
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* WU-IMAP 2000
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* Platforms
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41
imap.c
41
imap.c
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@ -132,6 +132,14 @@ init_ssl (config_t * conf)
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ERR_error_string (ERR_get_error (), 0));
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return -1;
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}
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if (!conf->use_sslv2)
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SSL_CTX_set_options (SSLContext, SSL_OP_NO_SSLv2);
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if (!conf->use_sslv3)
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SSL_CTX_set_options (SSLContext, SSL_OP_NO_SSLv3);
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if (!conf->use_tlsv1)
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SSL_CTX_set_options (SSLContext, SSL_OP_NO_TLSv1);
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/* we check the result of the verification after SSL_connect() */
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SSL_CTX_set_verify (SSLContext, SSL_VERIFY_NONE, 0);
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return 0;
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@ -169,7 +177,10 @@ buffer_gets (buffer_t * b, char **s)
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for (;;)
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{
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if (b->offset + 2 > b->bytes)
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/* make sure we have enough data to read the \r\n sequence */
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if (b->offset + 1 >= b->bytes)
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{
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if (start != 0)
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{
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/* shift down used bytes */
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*s = b->buf;
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@ -179,12 +190,14 @@ buffer_gets (buffer_t * b, char **s)
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if (n)
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memmove (b->buf, b->buf + start, n);
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b->offset = n;
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b->offset -= start;
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b->bytes = n;
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start = 0;
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}
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n =
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socket_read (b->sock, b->buf + b->offset,
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sizeof (b->buf) - b->offset);
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socket_read (b->sock, b->buf + b->bytes,
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sizeof (b->buf) - b->bytes);
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if (n <= 0)
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{
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@ -194,17 +207,18 @@ buffer_gets (buffer_t * b, char **s)
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puts ("EOF");
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return -1;
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}
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b->bytes = b->offset + n;
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// printf ("buffer_gets:read %d bytes\n", n);
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b->bytes += n;
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}
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if (b->buf[b->offset] == '\r')
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{
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assert (b->offset + 1 < b->bytes);
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if (b->buf[b->offset + 1] == '\n')
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{
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b->buf[b->offset] = 0; /* terminate the string */
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b->offset += 2; /* next line */
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// assert (strchr (*s, '\r') == 0);
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return 0;
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}
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}
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@ -241,6 +255,8 @@ parse_fetch (imap_t * imap, list_t * list)
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/* already saw this message */
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return 0;
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}
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else if (uid > imap->maxuid)
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imap->maxuid = uid;
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}
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else
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puts ("Error, unable to parse UID");
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@ -288,6 +304,15 @@ parse_fetch (imap_t * imap, list_t * list)
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}
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}
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#if 0
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if (uid == 221)
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{
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int loop = 1;
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while (loop);
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}
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#endif
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cur = calloc (1, sizeof (message_t));
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cur->next = imap->msgs;
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imap->msgs = cur;
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@ -522,12 +547,12 @@ imap_open (config_t * box, unsigned int minuid)
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#endif
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puts ("Logging in...");
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ret = imap_exec (imap, "LOGIN %s %s", box->user, box->pass);
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ret = imap_exec (imap, "LOGIN \"%s\" \"%s\"", box->user, box->pass);
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if (!ret)
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{
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/* get NAMESPACE info */
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if (!imap_exec (imap, "NAMESPACE"))
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if (box->use_namespace && !imap_exec (imap, "NAMESPACE"))
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{
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/* XXX for now assume personal namespace */
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if (is_list (imap->ns_personal) &&
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34
isync.1
34
isync.1
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@ -160,6 +160,16 @@ large attachments. If
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.I bytes
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is 0, the maximum file size is
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.B unlimited.
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..
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.TP
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\fBUseNamespace\fR \fIyes|no\fR
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Selects whether
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.B isync
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should select mailboxes using the namespace given by the NAMESPACE command.
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This is useful with broken IMAP servers. (Default:
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.I yes
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)
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..
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.TP
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\fBRequireSSL\fR \fIyes|no\fR
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.B isync
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@ -172,6 +182,30 @@ server can not be established. (Default:
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\fBCertificateFile\fR \fIpath\fR
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File containing X.509 CA certificates used to verify server identities.
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..
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.TP
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\fBUseSSLv2\fR \fIyes|no\fR
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Should
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.B isync
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use SSLv2 for communication with the IMAP server over SSL? (Default:
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.I yes
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)
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..
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.TP
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\fBUseSSLv3\fR \fIyes|no\fR
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Should
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.B isync
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use SSLv3 for communication with the IMAP server over SSL? (Default:
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.I yes
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)
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..
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.TP
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\fBUseTLSv1\fR \fIyes|no\fR
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Should
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.B isync
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use TLSv1 for communication with the IMAP server over SSL? (Default:
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.I yes
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)
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..
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.P
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Configuration commands that appear prior to the first
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.B Mailbox
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7
isync.h
7
isync.h
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@ -60,7 +60,11 @@ struct config
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char *cert_file;
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unsigned int use_imaps:1;
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unsigned int require_ssl:1;
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unsigned int use_sslv2:1;
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unsigned int use_sslv3:1;
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unsigned int use_tlsv1:1;
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#endif
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unsigned int use_namespace:1;
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};
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/* struct representing local mailbox file */
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@ -118,9 +122,6 @@ typedef struct
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buffer_t *buf; /* input buffer for reading server output */
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message_t *msgs; /* list of messages on the server */
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config_t *box; /* mailbox to open */
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message_t *recent_msgs; /* list of recent messages - only contains
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* UID to be used in a FETCH FLAGS command
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*/
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unsigned int deleted; /* # of deleted messages */
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unsigned int uidvalidity;
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unsigned int maxuid;
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36
main.c
36
main.c
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@ -95,10 +95,14 @@ config_defaults (config_t * conf)
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conf->box = global.box;
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conf->host = global.host;
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conf->max_size = global.max_size;
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conf->use_namespace = global.use_namespace;
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#if HAVE_LIBSSL
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conf->require_ssl = global.require_ssl;
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conf->use_imaps = global.use_imaps;
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conf->cert_file = global.cert_file;
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conf->use_sslv2 = global.use_sslv2;
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conf->use_sslv3 = global.use_sslv3;
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conf->use_tlsv1 = global.use_tlsv1;
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#endif
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}
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@ -213,6 +217,13 @@ load_config (char *where)
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else
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global.max_size = atol (p);
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}
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else if (!strncasecmp ("UseNamespace", buf, 12))
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{
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if (*cur)
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(*cur)->use_namespace = (strcasecmp (p, "yes") == 0);
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else
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global.use_namespace = (strcasecmp (p, "yes") == 0);
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}
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#if HAVE_LIBSSL
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else if (!strncasecmp ("CertificateFile", buf, 15))
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{
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@ -228,6 +239,27 @@ load_config (char *where)
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else
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global.require_ssl = (strcasecmp (p, "yes") == 0);
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}
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else if (!strncasecmp ("UseSSLv2", buf, 8))
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{
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if (*cur)
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(*cur)->use_sslv2 = (strcasecmp (p, "yes") == 0);
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else
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global.use_sslv2 = (strcasecmp (p, "yes") == 0);
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}
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else if (!strncasecmp ("UseSSLv3", buf, 8))
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{
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if (*cur)
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(*cur)->use_sslv3 = (strcasecmp (p, "yes") == 0);
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else
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global.use_sslv3 = (strcasecmp (p, "yes") == 0);
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}
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else if (!strncasecmp ("UseTLSv1", buf, 8))
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{
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if (*cur)
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(*cur)->use_tlsv1 = (strcasecmp (p, "yes") == 0);
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else
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global.use_tlsv1 = (strcasecmp (p, "yes") == 0);
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}
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#endif
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else if (buf[0])
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printf ("%s:%d:unknown command:%s", path, line, buf);
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@ -293,11 +325,15 @@ main (int argc, char **argv)
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global.box = "INBOX";
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global.user = strdup (pw->pw_name);
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global.max_size = 0;
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global.use_namespace = 1;
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#if HAVE_LIBSSL
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/* this will probably annoy people, but its the best default just in
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* case people forget to turn it on
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*/
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global.require_ssl = 1;
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global.use_sslv2 = 1;
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global.use_sslv3 = 1;
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global.use_tlsv1 = 1;
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#endif
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#if HAVE_GETOPT_LONG
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