This probably needs a bit more work, but I'll solicit comments and
flames anyway...
git-imap-send drops a patch series generated by git-format-patch into an
IMAP folder. This allows patch submitters to send patches through their
own mail program.
git-imap-send uses the following values from the GIT repository
configuration:
The target IMAP folder:
[imap]
Folder = "INBOX.Drafts"
A command to open an ssh tunnel to the imap mail server.
[imap]
Tunnel = "ssh -q user@xxxxxxxxxxxxxxx /usr/bin/imapd ./Maildir
2> /dev/null"
OR
[imap]
Host = imap.server.com
User = bob
Password = pwd
Port = 143
---
.gitignore | 1
Makefile | 4
imap-send.c | 1935
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 1939 insertions(+), 1 deletions(-)
create mode 100644 imap-send.c
b8fbeb40b92b9b6048c9f7ad66a10d8222c58b76
diff --git a/.gitignore b/.gitignore
index abbc509..c567cc0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -42,6 +42,7 @@ git-grep
git-hash-object
git-http-fetch
git-http-push
+git-imap-send
git-index-pack
git-init-db
git-local-fetch
diff --git a/Makefile b/Makefile
index b6d8804..bc49f06 100644
--- a/Makefile
+++ b/Makefile
@@ -165,7 +165,7 @@ PROGRAMS = \
git-upload-pack$X git-verify-pack$X git-write-tree$X \
git-update-ref$X git-symbolic-ref$X git-check-ref-format$X \
git-name-rev$X git-pack-redundant$X git-repo-config$X git-var$X \
- git-describe$X git-merge-tree$X git-blame$X
+ git-describe$X git-merge-tree$X git-blame$X git-imap-send$X
# what 'all' will build and 'install' will install, in gitexecdir
ALL_PROGRAMS = $(PROGRAMS) $(SIMPLE_PROGRAMS) $(SCRIPTS)
@@ -522,6 +522,8 @@ git-ssh-upload$X: rsh.o
git-ssh-pull$X: rsh.o fetch.o
git-ssh-push$X: rsh.o
+git-imap-send$X: imap-send.o $(LIB_FILE)
+
git-http-fetch$X: fetch.o http.o http-fetch.o $(LIB_FILE)
$(CC) $(ALL_CFLAGS) -o $@ $(ALL_LDFLAGS) $(filter %.o,$^) \
$(LIBS) $(CURL_LIBCURL)
diff --git a/imap-send.c b/imap-send.c
new file mode 100644
index 0000000..b6e5151
--- /dev/null
+++ b/imap-send.c
@@ -0,0 +1,1935 @@
+/*
+ * git-imap-send - drops patches into an imap Drafts folder
+ *
+ * derived from isync/mbsync - mailbox synchronizer
+ * Copyright (C) 2000-2002 Michael R. Elkins <me@xxxxxxxx>
+ * Copyright (C) 2002-2004 Oswald Buddenhagen <ossi@xxxxxxxxxxxx>
+ * Copyright (C) 2004 Theodore Y. Ts'o <tytso@xxxxxxx>
+ * Copyright (C) 2006 Mike McCormack
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * As a special exception, mbsync may be linked with the OpenSSL library,
+ * despite that library's more restrictive license.
+ */
+
+#include <sys/types.h>
+#include <stdarg.h>
+#include <stdio.h>
+
+#include <assert.h>
+#include <unistd.h>
+#include <sys/mman.h>
+#include <sys/time.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <stddef.h>
+#include <errno.h>
+#include <string.h>
+#include <ctype.h>
+#include <sys/socket.h>
+#include <sys/ioctl.h>
+#include <netinet/in.h>
+#include <netinet/tcp.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+#if HAVE_LIBSSL
+# include <openssl/ssl.h>
+# include <openssl/err.h>
+# include <openssl/hmac.h>
+#endif
+#include <pwd.h>
+
+#include "cache.h"
+
+#define as(ar) (sizeof(ar)/sizeof(ar[0]))
+
+typedef struct store_conf {
+ char *name;
+ const char *path; /* should this be here? its interpretation is driver-specific */
+ char *map_inbox;
+ char *trash;
+ unsigned max_size; /* off_t is overkill */
+ unsigned trash_remote_new:1, trash_only_new:1;
+} store_conf_t;
+
+typedef struct string_list {
+ struct string_list *next;
+ char string[1];
+} string_list_t;
+
+typedef struct channel_conf {
+ struct channel_conf *next;
+ char *name;
+ store_conf_t *master, *slave;
+ char *master_name, *slave_name;
+ char *sync_state;
+ string_list_t *patterns;
+ int mops, sops;
+ unsigned max_messages; /* for slave only */
+} channel_conf_t;
+
+typedef struct group_conf {
+ struct group_conf *next;
+ char *name;
+ string_list_t *channels;
+} group_conf_t;
+
+/* For message->status */
+#define M_RECENT (1<<0) /* unsyncable flag; maildir_* depend on this being 1<<0 */
+#define M_DEAD (1<<1) /* expunged */
+#define M_FLAGS (1<<2) /* flags fetched */
+#define M_PROCESSED (1<<3) /* registered in pair */
+#define M_NOT_SYNCED (1<<4) /* not in remote mailbox, yet */
+#define M_EXPIRED (1<<5) /* kicked out by MaxMessages */
+
+typedef struct message {
+ struct message *next;
+ /* string_list_t *keywords; */
+ size_t size; /* zero implies "not fetched" */
+ int uid;
+ unsigned char flags, status;
+} message_t;
+
+/* For opts, both in store and driver_t->select() */
+#define OPEN_OLD (1<<0)
+#define OPEN_NEW (1<<1)
+#define OPEN_FLAGS (1<<2)
+#define OPEN_SIZE (1<<3)
+#define OPEN_CREATE (1<<4)
+#define OPEN_EXPUNGE (1<<5)
+#define OPEN_SETFLAGS (1<<6)
+#define OPEN_APPEND (1<<7)
+
+typedef struct store {
+ store_conf_t *conf; /* foreign */
+
+ /* currently open mailbox */
+ const char *name; /* foreign! maybe preset? */
+ char *path; /* own */
+ message_t *msgs; /* own */
+ int uidvalidity;
+ unsigned char opts; /* maybe preset? */
+ /* note that the following do _not_ reflect stats from msgs, but mailbox totals */
+ int count; /* # of messages */
+ int recent; /* # of recent messages - don't trust this beyond the initial read */
+} store_t;
+
+typedef struct {
+ char *data;
+ int len;
+ unsigned char flags;
+ unsigned char crlf:1;
+} msg_data_t;
+
+#define DRV_OK 0
+#define DRV_MSG_BAD -1
+#define DRV_BOX_BAD -2
+#define DRV_STORE_BAD -3
+
+static int Verbose, Quiet;
+
+static void info( const char *, ... );
+static void warn( const char *, ... );
+
+static char *next_arg( char ** );
+
+static void free_generic_messages( message_t * );
+
+static int nfvasprintf( char **str, const char *fmt, va_list va );
+static int nfsnprintf( char *buf, int blen, const char *fmt, ... );
+
+
+static void arc4_init( void );
+static unsigned char arc4_getbyte( void );
+
+typedef struct imap_server_conf {
+ char *name;
+ char *tunnel;
+ char *host;
+ int port;
+ char *user;
+ char *pass;
+#if HAVE_LIBSSL
+ char *cert_file;
+ unsigned use_imaps:1;
+ unsigned require_ssl:1;
+ unsigned use_sslv2:1;
+ unsigned use_sslv3:1;
+ unsigned use_tlsv1:1;
+ unsigned require_cram:1;
+#endif
+} imap_server_conf_t;
+
+typedef struct imap_store_conf {
+ store_conf_t gen;
+ imap_server_conf_t *server;
+ unsigned use_namespace:1;
+} imap_store_conf_t;
+
+typedef struct imap_message {
+ message_t gen;
+/* int seq; will be needed when expunges are tracked */
+} imap_message_t;
+
+#define NIL (void*)0x1
+#define LIST (void*)0x2
+
+typedef struct _list {
+ struct _list *next, *child;
+ char *val;
+ int len;
+} list_t;
+
+typedef struct {
+ int fd;
+#if HAVE_LIBSSL
+ SSL *ssl;
+ unsigned int use_ssl:1;
+#endif
+} Socket_t;
+
+typedef struct {
+ Socket_t sock;
+ int bytes;
+ int offset;
+ char buf[1024];
+} buffer_t;
+
+struct imap_cmd;
+#define max_in_progress 50 /* make this configurable? */
+
+typedef struct imap {
+ int uidnext; /* from SELECT responses */
+ list_t *ns_personal, *ns_other, *ns_shared; /* NAMESPACE info */
+ string_list_t *boxes; /* LIST results */
+ message_t **msgapp; /* FETCH results */
+ unsigned caps, rcaps; /* CAPABILITY results */
+ /* command queue */
+ int nexttag, num_in_progress, literal_pending;
+ struct imap_cmd *in_progress, **in_progress_append;
+#if HAVE_LIBSSL
+ SSL_CTX *SSLContext;
+#endif
+ buffer_t buf; /* this is BIG, so put it last */
+} imap_t;
+
+typedef struct imap_store {
+ store_t gen;
+ int uidvalidity;
+ imap_t *imap;
+ const char *prefix;
+ unsigned /*currentnc:1,*/ trashnc:1;
+} imap_store_t;
+
+struct imap_cmd_cb {
+ int (*cont)( imap_store_t *ctx, struct imap_cmd *cmd, const char *prompt );
+ void (*done)( imap_store_t *ctx, struct imap_cmd *cmd, int response);
+ void *ctx;
+ char *data;
+ int dlen;
+ int uid;
+ unsigned create:1, trycreate:1;
+};
+
+struct imap_cmd {
+ struct imap_cmd *next;
+ struct imap_cmd_cb cb;
+ char *cmd;
+ int tag;
+};
+
+#define CAP(cap) (imap->caps & (1 << (cap)))
+
+enum CAPABILITY {
+ NOLOGIN = 0,
+ UIDPLUS,
+ LITERALPLUS,
+ NAMESPACE,
+#if HAVE_LIBSSL
+ CRAM,
+ STARTTLS,
+#endif
+};
+
+static const char *cap_list[] = {
+ "LOGINDISABLED",
+ "UIDPLUS",
+ "LITERAL+",
+ "NAMESPACE",
+#if HAVE_LIBSSL
+ "AUTH=CRAM-MD5",
+ "STARTTLS",
+#endif
+};
+
+#define RESP_OK 0
+#define RESP_NO 1
+#define RESP_BAD 2
+
+static int get_cmd_result( imap_store_t *ctx, struct imap_cmd *tcmd );
+
+
+static const char *Flags[] = {
+ "Draft",
+ "Flagged",
+ "Answered",
+ "Seen",
+ "Deleted",
+};
+
+#if HAVE_LIBSSL
+
+/* this gets called when a certificate is to be verified */
+static int
+verify_cert( SSL *ssl )
+{
+ X509 *cert;
+ int err;
+ char buf[256];
+ int ret = -1;
+ BIO *bio;
+
+ cert = SSL_get_peer_certificate( ssl );
+ if (!cert) {
+ fprintf( stderr, "Error, no server certificate\n" );
+ return -1;
+ }
+
+ err = SSL_get_verify_result( ssl );
+ if (err == X509_V_OK)
+ return 0;
+
+ fprintf( stderr, "Error, can't verify certificate: %s (%d)\n",
+ X509_verify_cert_error_string(err), err );
+
+ X509_NAME_oneline( X509_get_subject_name( cert ), buf, sizeof(buf) );
+ info( "\nSubject: %s\n", buf );
+ X509_NAME_oneline( X509_get_issuer_name( cert ), buf, sizeof(buf) );
+ info( "Issuer: %s\n", buf );
+ bio = BIO_new( BIO_s_mem() );
+ ASN1_TIME_print( bio, X509_get_notBefore( cert ) );
+ memset( buf, 0, sizeof(buf) );
+ BIO_read( bio, buf, sizeof(buf) - 1 );
+ info( "Valid from: %s\n", buf );
+ ASN1_TIME_print( bio, X509_get_notAfter( cert ) );
+ memset( buf, 0, sizeof(buf) );
+ BIO_read( bio, buf, sizeof(buf) - 1 );
+ BIO_free( bio );
+ info( " to: %s\n", buf );
+
+ fputs( "\n*** WARNING *** There is no way to verify this certificate. It is\n"
+ " possible that a hostile attacker has replaced the\n"
+ " server certificate. Continue at your own risk!\n"
+ "\nAccept this certificate anyway? [no]: ", stderr );
+ if (fgets( buf, sizeof(buf), stdin ) && (buf[0] == 'y' || buf[0] == 'Y')) {
+ ret = 0;
+ fprintf( stderr, "\n*** Fine, but don't say I didn't warn you!\n\n" );
+ }
+ return ret;
+}
+
+static int
+init_ssl_ctx( imap_store_t *ctx )
+{
+ imap_t *imap = ctx->imap;
+ imap_store_conf_t *conf = (imap_store_conf_t *)ctx->gen.conf;
+ imap_server_conf_t *srvc = conf->server;
+ SSL_METHOD *method;
+ int options = 0;
+
+ if (srvc->use_tlsv1 && !srvc->use_sslv2 && !srvc->use_sslv3)
+ method = TLSv1_client_method();
+ else
+ method = SSLv23_client_method();
+ imap->SSLContext = SSL_CTX_new( method );
+
+ if (!srvc->cert_file) {
+ fprintf( stderr, "Error, CertificateFile not defined\n" );
+ return -1;
+ } else if (access( srvc->cert_file, R_OK ))
+ warn( "*** Warning: can't read CertificateFile, so can't verify server certificates\n" );
+ else if (!SSL_CTX_load_verify_locations( imap->SSLContext, srvc->cert_file, NULL )) {
+ fprintf( stderr, "Error, SSL_CTX_load_verify_locations: %s\n",
+ ERR_error_string( ERR_get_error(), 0 ) );
+ return -1;
+ }
+
+ if (!srvc->use_sslv2)
+ options |= SSL_OP_NO_SSLv2;
+ if (!srvc->use_sslv3)
+ options |= SSL_OP_NO_SSLv3;
+ if (!srvc->use_tlsv1)
+ options |= SSL_OP_NO_TLSv1;
+
+ SSL_CTX_set_options( imap->SSLContext, options );
+
+ /* we check the result of the verification after SSL_connect() */
+ SSL_CTX_set_verify( imap->SSLContext, SSL_VERIFY_NONE, 0 );
+ return 0;
+}
+#endif /* HAVE_LIBSSL */
+
+static void
+socket_perror( const char *func, Socket_t *sock, int ret )
+{
+#if HAVE_LIBSSL
+ int err;
+
+ if (sock->use_ssl) {
+ switch ((err = SSL_get_error( sock->ssl, ret ))) {
+ case SSL_ERROR_SYSCALL:
+ case SSL_ERROR_SSL:
+ if ((err = ERR_get_error()) == 0) {
+ if (ret == 0)
+ fprintf( stderr, "SSL_%s:got EOF\n", func );
+ else
+ fprintf( stderr, "SSL_%s:%d:%s\n", func, errno, strerror(errno) );
+ } else
+ fprintf( stderr, "SSL_%s:%d:%s\n", func, err, ERR_error_string( err, 0 ) );
+ return;
+ default:
+ fprintf( stderr, "SSL_%s:%d:unhandled SSL error\n", func, err );
+ break;
+ }
+ return;
+ }
+#else
+ (void)sock;
+#endif
+ if (ret < 0)
+ perror( func );
+ else
+ fprintf( stderr, "%s: unexpected EOF\n", func );
+}
+
+static int
+socket_read( Socket_t *sock, char *buf, int len )
+{
+ int n =
+#if HAVE_LIBSSL
+ sock->use_ssl ? SSL_read( sock->ssl, buf, len ) :
+#endif
+ read( sock->fd, buf, len );
+ if (n <= 0) {
+ socket_perror( "read", sock, n );
+ close( sock->fd );
+ sock->fd = -1;
+ }
+ return n;
+}
+
+static int
+socket_write( Socket_t *sock, char *buf, int len )
+{
+ int n =
+#if HAVE_LIBSSL
+ sock->use_ssl ? SSL_write( sock->ssl, buf, len ) :
+#endif
+ write( sock->fd, buf, len );
+ if (n != len) {
+ socket_perror( "write", sock, n );
+ close( sock->fd );
+ sock->fd = -1;
+ }
+ return n;
+}
+
+#if 0
+
+static int
+socket_pending( Socket_t *sock )
+{
+ int num = -1;
+
+ if (ioctl( sock->fd, FIONREAD, &num ) < 0)
+ return -1;
+ if (num > 0)
+ return num;
+#if HAVE_LIBSSL
+ if (sock->use_ssl)
+ return SSL_pending( sock->ssl );
+#endif
+ return 0;
+}
+
+#endif
+
+/* simple line buffering */
+static int
+buffer_gets( buffer_t * b, char **s )
+{
+ int n;
+ int start = b->offset;
+
+ *s = b->buf + start;
+
+ for (;;) {
+ /* make sure we have enough data to read the \r\n sequence */
+ if (b->offset + 1 >= b->bytes) {
+ if (start) {
+ /* shift down used bytes */
+ *s = b->buf;
+
+ assert( start <= b->bytes );
+ n = b->bytes - start;
+
+ if (n)
+ memcpy( b->buf, b->buf + start, n );
+ b->offset -= start;
+ b->bytes = n;
+ start = 0;
+ }
+
+ n = socket_read( &b->sock, b->buf + b->bytes,
+ sizeof(b->buf) - b->bytes );
+
+ if (n <= 0)
+ return -1;
+
+ b->bytes += n;
+ }
+
+ if (b->buf[b->offset] == '\r') {
+ assert( b->offset + 1 < b->bytes );
+ if (b->buf[b->offset + 1] == '\n') {
+ b->buf[b->offset] = 0; /* terminate the string */
+ b->offset += 2; /* next line */
+ if (Verbose)
+ puts( *s );
+ return 0;
+ }
+ }
+
+ b->offset++;
+ }
+ /* not reached */
+}
+
+static void
+info( const char *msg, ... )
+{
+ va_list va;
+
+ if (!Quiet) {
+ va_start( va, msg );
+ vprintf( msg, va );
+ va_end( va );
+ fflush( stdout );
+ }
+}
+
+static void
+warn( const char *msg, ... )
+{
+ va_list va;
+
+ if (Quiet < 2) {
+ va_start( va, msg );
+ vfprintf( stderr, msg, va );
+ va_end( va );
+ }
+}
+
+static char *
+next_arg( char **s )
+{
+ char *ret;
+
+ if (!s || !*s)
+ return 0;
+ while (isspace( (unsigned char) **s ))
+ (*s)++;
+ if (!**s) {
+ *s = 0;
+ return 0;
+ }
+ if (**s == '"') {
+ ++*s;
+ ret = *s;
+ *s = strchr( *s, '"' );
+ } else {
+ ret = *s;
+ while (**s && !isspace( (unsigned char) **s ))
+ (*s)++;
+ }
+ if (*s) {
+ if (**s)
+ *(*s)++ = 0;
+ if (!**s)
+ *s = 0;
+ }
+ return ret;
+}
+
+static void
+free_generic_messages( message_t *msgs )
+{
+ message_t *tmsg;
+
+ for (; msgs; msgs = tmsg) {
+ tmsg = msgs->next;
+ free( msgs );
+ }
+}
+
+static int
+vasprintf( char **strp, const char *fmt, va_list ap )
+{
+ int len;
+ char tmp[1024];
+
+ if ((len = vsnprintf( tmp, sizeof(tmp), fmt, ap )) < 0 || !(*strp = xmalloc( len + 1 )))
+ return -1;
+ if (len >= (int)sizeof(tmp))
+ vsprintf( *strp, fmt, ap );
+ else
+ memcpy( *strp, tmp, len + 1 );
+ return len;
+}
+
+static int
+nfsnprintf( char *buf, int blen, const char *fmt, ... )
+{
+ int ret;
+ va_list va;
+
+ va_start( va, fmt );
+ if (blen <= 0 || (unsigned)(ret = vsnprintf( buf, blen, fmt, va )) >= (unsigned)blen)
+ die( "Fatal: buffer too small. Please report a bug.\n");
+ va_end( va );
+ return ret;
+}
+
+static int
+nfvasprintf( char **str, const char *fmt, va_list va )
+{
+ int ret = vasprintf( str, fmt, va );
+ if (ret < 0)
+ die( "Fatal: Out of memory\n");
+ return ret;
+}
+
+static struct {
+ unsigned char i, j, s[256];
+} rs;
+
+static void
+arc4_init( void )
+{
+ int i, fd;
+ unsigned char j, si, dat[128];
+
+ if ((fd = open( "/dev/urandom", O_RDONLY )) < 0 && (fd = open( "/dev/random", O_RDONLY )) < 0) {
+ fprintf( stderr, "Fatal: no random number source available.\n" );
+ exit( 3 );
+ }
+ if (read( fd, dat, 128 ) != 128) {
+ fprintf( stderr, "Fatal: cannot read random number source.\n" );
+ exit( 3 );
+ }
+ close( fd );
+
+ for (i = 0; i < 256; i++)
+ rs.s[i] = i;
+ for (i = j = 0; i < 256; i++) {
+ si = rs.s[i];
+ j += si + dat[i & 127];
+ rs.s[i] = rs.s[j];
+ rs.s[j] = si;
+ }
+ rs.i = rs.j = 0;
+
+ for (i = 0; i < 256; i++)
+ arc4_getbyte();
+}
+
+static unsigned char
+arc4_getbyte( void )
+{
+ unsigned char si, sj;
+
+ rs.i++;
+ si = rs.s[rs.i];
+ rs.j += si;
+ sj = rs.s[rs.j];
+ rs.s[rs.i] = sj;
+ rs.s[rs.j] = si;
+ return rs.s[(si + sj) & 0xff];
+}
+
+static struct imap_cmd *
+v_issue_imap_cmd( imap_store_t *ctx, struct imap_cmd_cb *cb,
+ const char *fmt, va_list ap )
+{
+ imap_t *imap = ctx->imap;
+ struct imap_cmd *cmd;
+ int n, bufl;
+ char buf[1024];
+
+ cmd = xmalloc( sizeof(struct imap_cmd) );
+ nfvasprintf( &cmd->cmd, fmt, ap );
+ cmd->tag = ++imap->nexttag;
+
+ if (cb)
+ cmd->cb = *cb;
+ else
+ memset( &cmd->cb, 0, sizeof(cmd->cb) );
+
+ while (imap->literal_pending)
+ get_cmd_result( ctx, 0 );
+
+ bufl = nfsnprintf( buf, sizeof(buf), cmd->cb.data ? CAP(LITERALPLUS) ?
+ "%d %s{%d+}\r\n" : "%d %s{%d}\r\n" : "%d %s\r\n",
+ cmd->tag, cmd->cmd, cmd->cb.dlen );
+ if (Verbose) {
+ if (imap->num_in_progress)
+ printf( "(%d in progress) ", imap->num_in_progress );
+ if (memcmp( cmd->cmd, "LOGIN", 5 ))
+ printf( ">>> %s", buf );
+ else
+ printf( ">>> %d LOGIN <user> <pass>\n", cmd->tag );
+ }
+ if (socket_write( &imap->buf.sock, buf, bufl ) != bufl) {
+ free( cmd->cmd );
+ free( cmd );
+ if (cb && cb->data)
+ free( cb->data );
+ return NULL;
+ }
+ if (cmd->cb.data) {
+ if (CAP(LITERALPLUS)) {
+ n = socket_write( &imap->buf.sock, cmd->cb.data, cmd->cb.dlen );
+ free( cmd->cb.data );
+ if (n != cmd->cb.dlen ||
+ (n = socket_write( &imap->buf.sock, "\r\n", 2 )) != 2)
+ {
+ free( cmd->cmd );
+ free( cmd );
+ return NULL;
+ }
+ cmd->cb.data = 0;
+ } else
+ imap->literal_pending = 1;
+ } else if (cmd->cb.cont)
+ imap->literal_pending = 1;
+ cmd->next = 0;
+ *imap->in_progress_append = cmd;
+ imap->in_progress_append = &cmd->next;
+ imap->num_in_progress++;
+ return cmd;
+}
+
+static struct imap_cmd *
+issue_imap_cmd( imap_store_t *ctx, struct imap_cmd_cb *cb, const char *fmt, ... )
+{
+ struct imap_cmd *ret;
+ va_list ap;
+
+ va_start( ap, fmt );
+ ret = v_issue_imap_cmd( ctx, cb, fmt, ap );
+ va_end( ap );
+ return ret;
+}
+
+#if 0
+
+static struct imap_cmd *
+issue_imap_cmd_w( imap_store_t *ctx, struct imap_cmd_cb *cb, const char *fmt, ... )
+{
+ imap_t *imap = ctx->imap;
+ struct imap_cmd *ret;
+ va_list ap;
+
+ va_start( ap, fmt );
+ ret = v_issue_imap_cmd( ctx, cb, fmt, ap );
+ va_end( ap );
+ while (imap->num_in_progress > max_in_progress ||
+ socket_pending( &imap->buf.sock ))
+ get_cmd_result( ctx, 0 );
+ return ret;
+}
+
+#endif
+
+static int
+imap_exec( imap_store_t *ctx, struct imap_cmd_cb *cb, const char *fmt, ... )
+{
+ va_list ap;
+ struct imap_cmd *cmdp;
+
+ va_start( ap, fmt );
+ cmdp = v_issue_imap_cmd( ctx, cb, fmt, ap );
+ va_end( ap );
+ if (!cmdp)
+ return RESP_BAD;
+
+ return get_cmd_result( ctx, cmdp );
+}
+
+#if 0
+
+static int
+imap_exec_b( imap_store_t *ctx, struct imap_cmd_cb *cb, const char *fmt, ... )
+{
+ va_list ap;
+ struct imap_cmd *cmdp;
+
+ va_start( ap, fmt );
+ cmdp = v_issue_imap_cmd( ctx, cb, fmt, ap );
+ va_end( ap );
+ if (!cmdp)
+ return DRV_STORE_BAD;
+
+ switch (get_cmd_result( ctx, cmdp )) {
+ case RESP_BAD: return DRV_STORE_BAD;
+ case RESP_NO: return DRV_BOX_BAD;
+ default: return DRV_OK;
+ }
+}
+
+#endif
+
+static int
+imap_exec_m( imap_store_t *ctx, struct imap_cmd_cb *cb, const char *fmt, ... )
+{
+ va_list ap;
+ struct imap_cmd *cmdp;
+
+ va_start( ap, fmt );
+ cmdp = v_issue_imap_cmd( ctx, cb, fmt, ap );
+ va_end( ap );
+ if (!cmdp)
+ return DRV_STORE_BAD;
+
+ switch (get_cmd_result( ctx, cmdp )) {
+ case RESP_BAD: return DRV_STORE_BAD;
+ case RESP_NO: return DRV_MSG_BAD;
+ default: return DRV_OK;
+ }
+}
+
+/*
+static void
+drain_imap_replies( imap_t *imap )
+{
+ while (imap->num_in_progress)
+ get_cmd_result( imap, 0 );
+}
+*/
+
+static int
+is_atom( list_t *list )
+{
+ return list && list->val && list->val != NIL && list->val != LIST;
+}
+
+static int
+is_list( list_t *list )
+{
+ return list && list->val == LIST;
+}
+
+static void
+free_list( list_t *list )
+{
+ list_t *tmp;
+
+ for (; list; list = tmp) {
+ tmp = list->next;
+ if (is_list( list ))
+ free_list( list->child );
+ else if (is_atom( list ))
+ free( list->val );
+ free( list );
+ }
+}
+
+static int
+parse_imap_list_l( imap_t *imap, char **sp, list_t **curp, int level )
+{
+ list_t *cur;
+ char *s = *sp, *p;
+ int n, bytes;
+
+ for (;;) {
+ while (isspace( (unsigned char)*s ))
+ s++;
+ if (level && *s == ')') {
+ s++;
+ break;
+ }
+ *curp = cur = xmalloc( sizeof(*cur) );
+ curp = &cur->next;
+ cur->val = 0; /* for clean bail */
+ if (*s == '(') {
+ /* sublist */
+ s++;
+ cur->val = LIST;
+ if (parse_imap_list_l( imap, &s, &cur->child, level + 1 ))
+ goto bail;
+ } else if (imap && *s == '{') {
+ /* literal */
+ bytes = cur->len = strtol( s + 1, &s, 10 );
+ if (*s != '}')
+ goto bail;
+
+ s = cur->val = xmalloc( cur->len );
+
+ /* dump whats left over in the input buffer */
+ n = imap->buf.bytes - imap->buf.offset;
+
+ if (n > bytes)
+ /* the entire message fit in the buffer */
+ n = bytes;
+
+ memcpy( s, imap->buf.buf + imap->buf.offset, n );
+ s += n;
+ bytes -= n;
+
+ /* mark that we used part of the buffer */
+ imap->buf.offset += n;
+
+ /* now read the rest of the message */
+ while (bytes > 0) {
+ if ((n = socket_read (&imap->buf.sock, s, bytes)) <= 0)
+ goto bail;
+ s += n;
+ bytes -= n;
+ }
+
+ if (buffer_gets( &imap->buf, &s ))
+ goto bail;
+ } else if (*s == '"') {
+ /* quoted string */
+ s++;
+ p = s;
+ for (; *s != '"'; s++)
+ if (!*s)
+ goto bail;
+ cur->len = s - p;
+ s++;
+ cur->val = xmalloc( cur->len + 1 );
+ memcpy( cur->val, p, cur->len );
+ cur->val[cur->len] = 0;
+ } else {
+ /* atom */
+ p = s;
+ for (; *s && !isspace( (unsigned char)*s ); s++)
+ if (level && *s == ')')
+ break;
+ cur->len = s - p;
+ if (cur->len == 3 && !memcmp ("NIL", p, 3))
+ cur->val = NIL;
+ else {
+ cur->val = xmalloc( cur->len + 1 );
+ memcpy( cur->val, p, cur->len );
+ cur->val[cur->len] = 0;
+ }
+ }
+
+ if (!level)
+ break;
+ if (!*s)
+ goto bail;
+ }
+ *sp = s;
+ *curp = 0;
+ return 0;
+
+ bail:
+ *curp = 0;
+ return -1;
+}
+
+static list_t *
+parse_imap_list( imap_t *imap, char **sp )
+{
+ list_t *head;
+
+ if (!parse_imap_list_l( imap, sp, &head, 0 ))
+ return head;
+ free_list( head );
+ return NULL;
+}
+
+static list_t *
+parse_list( char **sp )
+{
+ return parse_imap_list( 0, sp );
+}
+
+static int
+parse_fetch( imap_t *imap, char *cmd ) /* move this down */
+{
+ list_t *tmp, *list, *flags;
+ char *body = 0;
+ imap_message_t *cur;
+ msg_data_t *msgdata;
+ struct imap_cmd *cmdp;
+ int uid = 0, mask = 0, status = 0, size = 0;
+ unsigned i;
+
+ list = parse_imap_list( imap, &cmd );
+
+ if (!is_list( list )) {
+ fprintf( stderr, "IMAP error: bogus FETCH response\n" );
+ free_list( list );
+ return -1;
+ }
+
+ for (tmp = list->child; tmp; tmp = tmp->next) {
+ if (is_atom( tmp )) {
+ if (!strcmp( "UID", tmp->val )) {
+ tmp = tmp->next;
+ if (is_atom( tmp ))
+ uid = atoi( tmp->val );
+ else
+ fprintf( stderr, "IMAP error: unable to parse UID\n" );
+ } else if (!strcmp( "FLAGS", tmp->val )) {
+ tmp = tmp->next;
+ if (is_list( tmp )) {
+ for (flags = tmp->child; flags; flags = flags->next) {
+ if (is_atom( flags )) {
+ if (flags->val[0] == '\\') { /* ignore user-defined flags for now */
+ if (!strcmp( "Recent", flags->val + 1)) {
+ status |= M_RECENT;
+ goto flagok;
+ }
+ for (i = 0; i < as(Flags); i++)
+ if (!strcmp( Flags[i], flags->val + 1 )) {
+ mask |= 1 << i;
+ goto flagok;
+ }
+ fprintf( stderr, "IMAP warning: unknown system flag %s\n", flags->val );
+ }
+ flagok: ;
+ } else
+ fprintf( stderr, "IMAP error: unable to parse FLAGS list\n" );
+ }
+ status |= M_FLAGS;
+ } else
+ fprintf( stderr, "IMAP error: unable to parse FLAGS\n" );
+ } else if (!strcmp( "RFC822.SIZE", tmp->val )) {
+ tmp = tmp->next;
+ if (is_atom( tmp ))
+ size = atoi( tmp->val );
+ else
+ fprintf( stderr, "IMAP error: unable to parse SIZE\n" );
+ } else if (!strcmp( "BODY[]", tmp->val )) {
+ tmp = tmp->next;
+ if (is_atom( tmp )) {
+ body = tmp->val;
+ tmp->val = 0; /* don't free together with list */
+ size = tmp->len;
+ } else
+ fprintf( stderr, "IMAP error: unable to parse BODY[]\n" );
+ }
+ }
+ }
+
+ if (body) {
+ for (cmdp = imap->in_progress; cmdp; cmdp = cmdp->next)
+ if (cmdp->cb.uid == uid)
+ goto gotuid;
+ fprintf( stderr, "IMAP error: unexpected FETCH response (UID %d)\n", uid );
+ free_list( list );
+ return -1;
+ gotuid:
+ msgdata = (msg_data_t *)cmdp->cb.ctx;
+ msgdata->data = body;
+ msgdata->len = size;
+ msgdata->crlf = 1;
+ if (status & M_FLAGS)
+ msgdata->flags = mask;
+ } else if (uid) { /* ignore async flag updates for now */
+ /* XXX this will need sorting for out-of-order (multiple queries) */
+ cur = xcalloc( sizeof(*cur), 1 );
+ *imap->msgapp = &cur->gen;
+ imap->msgapp = &cur->gen.next;
+ cur->gen.next = 0;
+ cur->gen.uid = uid;
+ cur->gen.flags = mask;
+ cur->gen.status = status;
+ cur->gen.size = size;
+ }
+
+ free_list( list );
+ return 0;
+}
+
+static void
+parse_capability( imap_t *imap, char *cmd )
+{
+ char *arg;
+ unsigned i;
+
+ imap->caps = 0x80000000;
+ while ((arg = next_arg( &cmd )))
+ for (i = 0; i < as(cap_list); i++)
+ if (!strcmp( cap_list[i], arg ))
+ imap->caps |= 1 << i;
+ imap->rcaps = imap->caps;
+}
+
+static int
+parse_response_code( imap_store_t *ctx, struct imap_cmd_cb *cb, char *s )
+{
+ imap_t *imap = ctx->imap;
+ char *arg, *p;
+
+ if (*s != '[')
+ return RESP_OK; /* no response code */
+ s++;
+ if (!(p = strchr( s, ']' ))) {
+ fprintf( stderr, "IMAP error: malformed response code\n" );
+ return RESP_BAD;
+ }
+ *p++ = 0;
+ arg = next_arg( &s );
+ if (!strcmp( "UIDVALIDITY", arg )) {
+ if (!(arg = next_arg( &s )) || !(ctx->gen.uidvalidity = atoi( arg ))) {
+ fprintf( stderr, "IMAP error: malformed UIDVALIDITY status\n" );
+ return RESP_BAD;
+ }
+ } else if (!strcmp( "UIDNEXT", arg )) {
+ if (!(arg = next_arg( &s )) || !(imap->uidnext = atoi( arg ))) {
+ fprintf( stderr, "IMAP error: malformed NEXTUID status\n" );
+ return RESP_BAD;
+ }
+ } else if (!strcmp( "CAPABILITY", arg )) {
+ parse_capability( imap, s );
+ } else if (!strcmp( "ALERT", arg )) {
+ /* RFC2060 says that these messages MUST be displayed
+ * to the user
+ */
+ for (; isspace( (unsigned char)*p ); p++);
+ fprintf( stderr, "*** IMAP ALERT *** %s\n", p );
+ } else if (cb && cb->ctx && !strcmp( "APPENDUID", arg )) {
+ if (!(arg = next_arg( &s )) || !(ctx->gen.uidvalidity = atoi( arg )) ||
+ !(arg = next_arg( &s )) || !(*(int *)cb->ctx = atoi( arg )))
+ {
+ fprintf( stderr, "IMAP error: malformed APPENDUID status\n" );
+ return RESP_BAD;
+ }
+ }
+ return RESP_OK;
+}
+
+static int
+get_cmd_result( imap_store_t *ctx, struct imap_cmd *tcmd )
+{
+ imap_t *imap = ctx->imap;
+ struct imap_cmd *cmdp, **pcmdp, *ncmdp;
+ char *cmd, *arg, *arg1, *p;
+ int n, resp, resp2, tag;
+
+ for (;;) {
+ if (buffer_gets( &imap->buf, &cmd ))
+ return RESP_BAD;
+
+ arg = next_arg( &cmd );
+ if (*arg == '*') {
+ arg = next_arg( &cmd );
+ if (!arg) {
+ fprintf( stderr, "IMAP error: unable to parse untagged response\n" );
+ return RESP_BAD;
+ }
+
+ if (!strcmp( "NAMESPACE", arg )) {
+ imap->ns_personal = parse_list( &cmd );
+ imap->ns_other = parse_list( &cmd );
+ imap->ns_shared = parse_list( &cmd );
+ } else if (!strcmp( "OK", arg ) || !strcmp( "BAD", arg ) ||
+ !strcmp( "NO", arg ) || !strcmp( "BYE", arg )) {
+ if ((resp = parse_response_code( ctx, 0, cmd )) != RESP_OK)
+ return resp;
+ } else if (!strcmp( "CAPABILITY", arg ))
+ parse_capability( imap, cmd );
+ else if ((arg1 = next_arg( &cmd ))) {
+ if (!strcmp( "EXISTS", arg1 ))
+ ctx->gen.count = atoi( arg );
+ else if (!strcmp( "RECENT", arg1 ))
+ ctx->gen.recent = atoi( arg );
+ else if(!strcmp ( "FETCH", arg1 )) {
+ if (parse_fetch( imap, cmd ))
+ return RESP_BAD;
+ }
+ } else {
+ fprintf( stderr, "IMAP error: unable to parse untagged response\n" );
+ return RESP_BAD;
+ }
+ } else if (!imap->in_progress) {
+ fprintf( stderr, "IMAP error: unexpected reply: %s %s\n", arg, cmd ? cmd : "" );
+ return RESP_BAD;
+ } else if (*arg == '+') {
+ /* This can happen only with the last command underway, as
+ it enforces a round-trip. */
+ cmdp = (struct imap_cmd *)((char *)imap->in_progress_append -
+ offsetof(struct imap_cmd, next));
+ if (cmdp->cb.data) {
+ n = socket_write( &imap->buf.sock, cmdp->cb.data, cmdp->cb.dlen );
+ free( cmdp->cb.data );
+ cmdp->cb.data = 0;
+ if (n != (int)cmdp->cb.dlen)
+ return RESP_BAD;
+ } else if (cmdp->cb.cont) {
+ if (cmdp->cb.cont( ctx, cmdp, cmd ))
+ return RESP_BAD;
+ } else {
+ fprintf( stderr, "IMAP error: unexpected command continuation request\n" );
+ return RESP_BAD;
+ }
+ if (socket_write( &imap->buf.sock, "\r\n", 2 ) != 2)
+ return RESP_BAD;
+ if (!cmdp->cb.cont)
+ imap->literal_pending = 0;
+ if (!tcmd)
+ return DRV_OK;
+ } else {
+ tag = atoi( arg );
+ for (pcmdp = &imap->in_progress; (cmdp = *pcmdp); pcmdp = &cmdp->next)
+ if (cmdp->tag == tag)
+ goto gottag;
+ fprintf( stderr, "IMAP error: unexpected tag %s\n", arg );
+ return RESP_BAD;
+ gottag:
+ if (!(*pcmdp = cmdp->next))
+ imap->in_progress_append = pcmdp;
+ imap->num_in_progress--;
+ if (cmdp->cb.cont || cmdp->cb.data)
+ imap->literal_pending = 0;
+ arg = next_arg( &cmd );
+ if (!strcmp( "OK", arg ))
+ resp = DRV_OK;
+ else {
+ if (!strcmp( "NO", arg )) {
+ if (cmdp->cb.create && cmd && (cmdp->cb.trycreate || !memcmp( cmd, "[TRYCREATE]", 11 ))) { /* SELECT, APPEND or UID COPY */
+ p = strchr( cmdp->cmd, '"' );
+ if (!issue_imap_cmd( ctx, 0, "CREATE \"%.*s\"", strchr( p + 1, '"' ) - p + 1, p )) {
+ resp = RESP_BAD;
+ goto normal;
+ }
+ /* not waiting here violates the spec, but a server that does not
+ grok this nonetheless violates it too. */
+ cmdp->cb.create = 0;
+ if (!(ncmdp = issue_imap_cmd( ctx, &cmdp->cb, "%s", cmdp->cmd ))) {
+ resp = RESP_BAD;
+ goto normal;
+ }
+ free( cmdp->cmd );
+ free( cmdp );
+ if (!tcmd)
+ return 0; /* ignored */
+ if (cmdp == tcmd)
+ tcmd = ncmdp;
+ continue;
+ }
+ resp = RESP_NO;
+ } else /*if (!strcmp( "BAD", arg ))*/
+ resp = RESP_BAD;
+ fprintf( stderr, "IMAP command '%s' returned response (%s) - %s\n",
+ memcmp (cmdp->cmd, "LOGIN", 5) ?
+ cmdp->cmd : "LOGIN <user> <pass>",
+ arg, cmd ? cmd : "");
+ }
+ if ((resp2 = parse_response_code( ctx, &cmdp->cb, cmd )) > resp)
+ resp = resp2;
+ normal:
+ if (cmdp->cb.done)
+ cmdp->cb.done( ctx, cmdp, resp );
+ if (cmdp->cb.data)
+ free( cmdp->cb.data );
+ free( cmdp->cmd );
+ free( cmdp );
+ if (!tcmd || tcmd == cmdp)
+ return resp;
+ }
+ }
+ /* not reached */
+}
+
+static void
+imap_close_server( imap_store_t *ictx )
+{
+ imap_t *imap = ictx->imap;
+
+ if (imap->buf.sock.fd != -1) {
+ imap_exec( ictx, 0, "LOGOUT" );
+ close( imap->buf.sock.fd );
+ }
+#ifdef HAVE_LIBSSL
+ if (imap->SSLContext)
+ SSL_CTX_free( imap->SSLContext );
+#endif
+ free_list( imap->ns_personal );
+ free_list( imap->ns_other );
+ free_list( imap->ns_shared );
+ free( imap );
+}
+
+static void
+imap_close_store( store_t *ctx )
+{
+ imap_close_server( (imap_store_t *)ctx );
+ free_generic_messages( ctx->msgs );
+ free( ctx );
+}
+
+#ifdef HAVE_LIBSSL
+static int
+start_tls( imap_store_t *ctx )
+{
+ imap_t *imap = ctx->imap;
+ int ret;
+ static int ssl_inited;
+
+ if (!ssl_inited) {
+ SSL_library_init();
+ SSL_load_error_strings();
+ ssl_inited = 1;
+ }
+
+ if (init_ssl_ctx( ctx ))
+ return 1;
+
+ imap->buf.sock.ssl = SSL_new( imap->SSLContext );
+ SSL_set_fd( imap->buf.sock.ssl, imap->buf.sock.fd );
+ if ((ret = SSL_connect( imap->buf.sock.ssl )) <= 0) {
+ socket_perror( "connect", &imap->buf.sock, ret );
+ return 1;
+ }
+
+ /* verify the server certificate */
+ if (verify_cert( imap->buf.sock.ssl ))
+ return 1;
+
+ imap->buf.sock.use_ssl = 1;
+ info( "Connection is now encrypted\n" );
+ return 0;
+}
+
+#define ENCODED_SIZE(n) (4*((n+2)/3))
+
+static char
+hexchar( unsigned int b )
+{
+ if (b < 10)
+ return '0' + b;
+ return 'a' + (b - 10);
+}
+
+/* XXX merge into do_cram_auth? */
+static char *
+cram( const char *challenge, const char *user, const char *pass )
+{
+ HMAC_CTX hmac;
+ char hash[16];
+ char hex[33];
+ int i;
+ unsigned int hashlen = sizeof(hash);
+ char buf[256];
+ int len = strlen( challenge );
+ char *response = xcalloc( 1 + len, 1 );
+ char *final;
+
+ /* response will always be smaller than challenge because we are
+ * decoding.
+ */
+ len = EVP_DecodeBlock( (unsigned char *)response, (unsigned char *)challenge, strlen( challenge ) );
+
+ HMAC_Init( &hmac, (unsigned char *) pass, strlen( pass ), EVP_md5() );
+ HMAC_Update( &hmac, (unsigned char *)response, strlen( response ) );
+ HMAC_Final( &hmac, (unsigned char *)hash, &hashlen );
+
+ assert( hashlen == sizeof(hash) );
+
+ free( response );
+
+ hex[32] = 0;
+ for (i = 0; i < 16; i++) {
+ hex[2 * i] = hexchar( (hash[i] >> 4) & 0xf );
+ hex[2 * i + 1] = hexchar( hash[i] & 0xf );
+ }
+
+ nfsnprintf( buf, sizeof(buf), "%s %s", user, hex );
+
+ len = strlen( buf );
+ len = ENCODED_SIZE( len ) + 1;
+ final = xmalloc( len );
+ final[len - 1] = 0;
+
+ assert( EVP_EncodeBlock( (unsigned char *)final, (unsigned char *)buf, strlen( buf ) ) == len - 1 );
+
+ return final;
+}
+
+static int
+do_cram_auth (imap_store_t *ctx, struct imap_cmd *cmdp, const char *prompt)
+{
+ imap_t *imap = ctx->imap;
+ imap_server_conf_t *srvc = ((imap_store_conf_t *)ctx->gen.conf)->server;
+ char *resp;
+ int n, l;
+
+ resp = cram( prompt, srvc->user, srvc->pass );
+
+ if (Verbose)
+ printf( ">+> %s\n", resp );
+ l = strlen( resp );
+ n = socket_write( &imap->buf.sock, resp, l );
+ free( resp );
+ if (n != l)
+ return -1;
+ cmdp->cb.cont = 0;
+ return 0;
+}
+#endif
+
+static store_t *
+imap_open_store( imap_server_conf_t *srvc )
+{
+ imap_store_t *ctx;
+ imap_t *imap;
+ char *arg, *rsp;
+ struct hostent *he;
+ struct sockaddr_in addr;
+ int s, a[2], preauth;
+#if HAVE_LIBSSL
+ int use_ssl;
+#endif
+
+ ctx = xcalloc( sizeof(*ctx), 1 );
+
+ ctx->imap = imap = xcalloc( sizeof(*imap), 1 );
+ imap->buf.sock.fd = -1;
+ imap->in_progress_append = &imap->in_progress;
+
+ /* open connection to IMAP server */
+#if HAVE_LIBSSL
+ use_ssl = 0;
+#endif
+
+ if (srvc->tunnel) {
+ info( "Starting tunnel '%s'... ", srvc->tunnel );
+
+ if (socketpair( PF_UNIX, SOCK_STREAM, 0, a )) {
+ perror( "socketpair" );
+ exit( 1 );
+ }
+
+ if (fork() == 0) {
+ if (dup2( a[0], 0 ) == -1 || dup2( a[0], 1 ) == -1)
+ _exit( 127 );
+ close( a[0] );
+ close( a[1] );
+ execl( "/bin/sh", "sh", "-c", srvc->tunnel, 0 );
+ _exit( 127 );
+ }
+
+ close (a[0]);
+
+ imap->buf.sock.fd = a[1];
+
+ info( "ok\n" );
+ } else {
+ memset( &addr, 0, sizeof(addr) );
+ addr.sin_port = htons( srvc->port );
+ addr.sin_family = AF_INET;
+
+ info( "Resolving %s... ", srvc->host );
+ he = gethostbyname( srvc->host );
+ if (!he) {
+ perror( "gethostbyname" );
+ goto bail;
+ }
+ info( "ok\n" );
+
+ addr.sin_addr.s_addr = *((int *) he->h_addr_list[0]);
+
+ s = socket( PF_INET, SOCK_STREAM, 0 );
+
+ info( "Connecting to %s:%hu... ", inet_ntoa( addr.sin_addr ), ntohs( addr.sin_port ) );
+ if (connect( s, (struct sockaddr *)&addr, sizeof(addr) )) {
+ close( s );
+ perror( "connect" );
+ goto bail;
+ }
+ info( "ok\n" );
+
+ imap->buf.sock.fd = s;
+
+#if HAVE_LIBSSL
+ if (srvc->use_imaps) {
+ if (start_tls( ctx ))
+ goto bail;
+ use_ssl = 1;
+ }
+#endif
+ }
+
+ /* read the greeting string */
+ if (buffer_gets( &imap->buf, &rsp )) {
+ fprintf( stderr, "IMAP error: no greeting response\n" );
+ goto bail;
+ }
+ arg = next_arg( &rsp );
+ if (!arg || *arg != '*' || (arg = next_arg( &rsp )) == NULL) {
+ fprintf( stderr, "IMAP error: invalid greeting response\n" );
+ goto bail;
+ }
+ preauth = 0;
+ if (!strcmp( "PREAUTH", arg ))
+ preauth = 1;
+ else if (strcmp( "OK", arg ) != 0) {
+ fprintf( stderr, "IMAP error: unknown greeting response\n" );
+ goto bail;
+ }
+ parse_response_code( ctx, 0, rsp );
+ if (!imap->caps && imap_exec( ctx, 0, "CAPABILITY" ) != RESP_OK)
+ goto bail;
+
+ if (!preauth) {
+#if HAVE_LIBSSL
+ if (!srvc->use_imaps && (srvc->use_sslv2 || srvc->use_sslv3 || srvc->use_tlsv1)) {
+ /* always try to select SSL support if available */
+ if (CAP(STARTTLS)) {
+ if (imap_exec( ctx, 0, "STARTTLS" ) != RESP_OK)
+ goto bail;
+ if (start_tls( ctx ))
+ goto bail;
+ use_ssl = 1;
+
+ if (imap_exec( ctx, 0, "CAPABILITY" ) != RESP_OK)
+ goto bail;
+ } else {
+ if (srvc->require_ssl) {
+ fprintf( stderr, "IMAP error: SSL support not available\n" );
+ goto bail;
+ } else
+ warn( "IMAP warning: SSL support not available\n" );
+ }
+ }
+#endif
+
+ info ("Logging in...\n");
+ if (!srvc->user) {
+ fprintf( stderr, "Skipping server %s, no user\n", srvc->host );
+ goto bail;
+ }
+ if (!srvc->pass) {
+ char prompt[80];
+ sprintf( prompt, "Password (%s@%s): ", srvc->user, srvc->host );
+ arg = getpass( prompt );
+ if (!arg) {
+ perror( "getpass" );
+ exit( 1 );
+ }
+ if (!*arg) {
+ fprintf( stderr, "Skipping account %s@%s, no password\n", srvc->user, srvc->host );
+ goto bail;
+ }
+ /*
+ * getpass() returns a pointer to a static buffer. make a copy
+ * for long term storage.
+ */
+ srvc->pass = strdup( arg );
+ }
+#if HAVE_LIBSSL
+ if (CAP(CRAM)) {
+ struct imap_cmd_cb cb;
+
+ info( "Authenticating with CRAM-MD5\n" );
+ memset( &cb, 0, sizeof(cb) );
+ cb.cont = do_cram_auth;
+ if (imap_exec( ctx, &cb, "AUTHENTICATE CRAM-MD5" ) != RESP_OK)
+ goto bail;
+ } else if (srvc->require_cram) {
+ fprintf( stderr, "IMAP error: CRAM-MD5 authentication is not supported by server\n" );
+ goto bail;
+ } else
+#endif
+ {
+ if (CAP(NOLOGIN)) {
+ fprintf( stderr, "Skipping account %s@%s, server forbids LOGIN\n", srvc->user, srvc->host );
+ goto bail;
+ }
+#if HAVE_LIBSSL
+ if (!use_ssl)
+#endif
+ warn( "*** IMAP Warning *** Password is being sent in the clear\n" );
+ if (imap_exec( ctx, 0, "LOGIN \"%s\" \"%s\"", srvc->user, srvc->pass ) != RESP_OK) {
+ fprintf( stderr, "IMAP error: LOGIN failed\n" );
+ goto bail;
+ }
+ }
+ } /* !preauth */
+
+ ctx->prefix = "";
+ ctx->trashnc = 1;
+ return (store_t *)ctx;
+
+ bail:
+ imap_close_store( &ctx->gen );
+ return 0;
+}
+
+static int
+imap_make_flags( int flags, char *buf )
+{
+ const char *s;
+ unsigned i, d;
+
+ for (i = d = 0; i < as(Flags); i++)
+ if (flags & (1 << i)) {
+ buf[d++] = ' ';
+ buf[d++] = '\\';
+ for (s = Flags[i]; *s; s++)
+ buf[d++] = *s;
+ }
+ buf[0] = '(';
+ buf[d++] = ')';
+ return d;
+}
+
+#define TUIDL 8
+
+static int
+imap_store_msg( store_t *gctx, msg_data_t *data, int *uid )
+{
+ imap_store_t *ctx = (imap_store_t *)gctx;
+ imap_t *imap = ctx->imap;
+ struct imap_cmd_cb cb;
+ char *fmap, *buf;
+ const char *prefix, *box;
+ int ret, i, j, d, len, extra, nocr;
+ int start, sbreak = 0, ebreak = 0;
+ char flagstr[128], tuid[TUIDL * 2 + 1];
+
+ memset( &cb, 0, sizeof(cb) );
+
+ fmap = data->data;
+ len = data->len;
+ nocr = !data->crlf;
+ extra = 0, i = 0;
+ if (!CAP(UIDPLUS) && uid) {
+ nloop:
+ start = i;
+ while (i < len)
+ if (fmap[i++] == '\n') {
+ extra += nocr;
+ if (i - 2 + nocr == start) {
+ sbreak = ebreak = i - 2 + nocr;
+ goto mktid;
+ }
+ if (!memcmp( fmap + start, "X-TUID: ", 8 )) {
+ extra -= (ebreak = i) - (sbreak = start) + nocr;
+ goto mktid;
+ }
+ goto nloop;
+ }
+ /* invalid message */
+ free( fmap );
+ return DRV_MSG_BAD;
+ mktid:
+ for (j = 0; j < TUIDL; j++)
+ sprintf( tuid + j * 2, "%02x", arc4_getbyte() );
+ extra += 8 + TUIDL * 2 + 2;
+ }
+ if (nocr)
+ for (; i < len; i++)
+ if (fmap[i] == '\n')
+ extra++;
+
+ cb.dlen = len + extra;
+ buf = cb.data = xmalloc( cb.dlen );
+ i = 0;
+ if (!CAP(UIDPLUS) && uid) {
+ if (nocr) {
+ for (; i < sbreak; i++)
+ if (fmap[i] == '\n') {
+ *buf++ = '\r';
+ *buf++ = '\n';
+ } else
+ *buf++ = fmap[i];
+ } else {
+ memcpy( buf, fmap, sbreak );
+ buf += sbreak;
+ }
+ memcpy( buf, "X-TUID: ", 8 );
+ buf += 8;
+ memcpy( buf, tuid, TUIDL * 2 );
+ buf += TUIDL * 2;
+ *buf++ = '\r';
+ *buf++ = '\n';
+ i = ebreak;
+ }
+ if (nocr) {
+ for (; i < len; i++)
+ if (fmap[i] == '\n') {
+ *buf++ = '\r';
+ *buf++ = '\n';
+ } else
+ *buf++ = fmap[i];
+ } else
+ memcpy( buf, fmap + i, len - i );
+
+ free( fmap );
+
+ d = 0;
+ if (data->flags) {
+ d = imap_make_flags( data->flags, flagstr );
+ flagstr[d++] = ' ';
+ }
+ flagstr[d] = 0;
+
+ if (!uid) {
+ box = gctx->conf->trash;
+ prefix = ctx->prefix;
+ cb.create = 1;
+ if (ctx->trashnc)
+ imap->caps = imap->rcaps & ~(1 << LITERALPLUS);
+ } else {
+ box = gctx->name;
+ prefix = !strcmp( box, "INBOX" ) ? "" : ctx->prefix;
+ cb.create = (gctx->opts & OPEN_CREATE) != 0;
+ /*if (ctx->currentnc)
+ imap->caps = imap->rcaps & ~(1 << LITERALPLUS);*/
+ }
+ cb.ctx = uid;
+ ret = imap_exec_m( ctx, &cb, "APPEND \"%s%s\" %s", prefix, box, flagstr );
+ imap->caps = imap->rcaps;
+ if (ret != DRV_OK)
+ return ret;
+ if (!uid)
+ ctx->trashnc = 0;
+ else {
+ /*ctx->currentnc = 0;*/
+ gctx->count++;
+ }
+
+ return DRV_OK;
+}
+
+
+/*
+ * mm-push-imap - push a patch into an imap folder
+ */
+
+#define CHUNKSIZE 0x1000
+
+static int
+read_message( FILE *f, msg_data_t *msg )
+{
+ int len, r;
+
+ memset( msg, 0, sizeof *msg );
+ len = CHUNKSIZE;
+ msg->data = xmalloc( len+1 );
+ msg->data[0] = 0;
+
+ while(!feof( f )) {
+ if (msg->len >= len) {
+ void *p;
+ len += CHUNKSIZE;
+ p = xrealloc(msg->data, len+1);
+ if (!p)
+ break;
+ }
+ r = fread( &msg->data[msg->len], 1, len - msg->len, f );
+ if (r <= 0)
+ break;
+ msg->len += r;
+ }
+ msg->data[msg->len] = 0;
+ return msg->len;
+}
+
+static int count_messages( msg_data_t *msg )
+{
+ int count = 0;
+ char *p = msg->data;
+
+ while (1) {
+ if (!strncmp( "From ", p, 5 )) {
+ count++;
+ p += 5;
+ }
+ p = strstr( p+5, "\nFrom ");
+ if (!p)
+ break;
+ p++;
+ }
+ return count;
+}
+
+static int
+split_msg( msg_data_t *all_msgs, msg_data_t *msg, int *ofs )
+{
+ char *p, *data;
+
+ memset( msg, 0, sizeof *msg );
+ if (*ofs >= all_msgs->len)
+ return 0;
+
+ data = &all_msgs->data[ *ofs ];
+ msg->len = all_msgs->len - *ofs;
+
+ if (msg->len < 5 || strncmp( data, "From ", 5 ))
+ return 0;
+
+ p = strstr( data, "\nFrom " );
+ if (p)
+ msg->len = &p[1] - data;
+
+ msg->data = xmalloc( msg->len + 1 );
+ if (!msg->data)
+ return 0;
+
+ memcpy( msg->data, data, msg->len );
+ msg->data[ msg->len ] = 0;
+
+ *ofs += msg->len;
+ return 1;
+}
+
+static imap_server_conf_t server =
+{
+ NULL, /* name */
+ NULL, /* tunnel */
+ NULL, /* host */
+ 0, /* port */
+ NULL, /* user */
+ NULL, /* pass */
+#if HAVE_LIBSSL
+ NULL, /* cert_file */
+ 0, /* use_imaps */
+ 0, /* require_ssl */
+ 0, /* use_sslv2 */
+ 0, /* use_sslv3 */
+ 0, /* use_tlsv1 */
+ 0, /* require_cram */
+#endif
+};
+
+static char *imap_folder;
+
+static int
+git_imap_config(const char *key, const char *val)
+{
+ char imap_key[] = "imap.";
+
+ if (strncmp( key, imap_key, sizeof imap_key - 1 ))
+ return 0;
+ key += sizeof imap_key - 1;
+
+ if (!strcasecmp( "Folder", key )) {
+ imap_folder = strdup( val );
+ } else if (!strcasecmp( "Host", key )) {
+#if HAVE_LIBSSL
+ if (!memcmp( "imaps:", val, 6 )) {
+ val += 6;
+ server.use_imaps = 1;
+ server.use_sslv2 = 1;
+ server.use_sslv3 = 1;
+ if (!server.port)
+ server.port = 993;
+ } else
+#endif
+ {
+ if (!memcmp( "imap:", val, 5 ))
+ val += 5;
+ if (!server.port)
+ server.port = 143;
+ }
+ if (!memcmp( "//", val, 2 ))
+ val += 2;
+ server.host = strdup( val );
+ }
+ else if (!strcasecmp( "User", key ))
+ server.user = strdup( val );
+ else if (!strcasecmp( "Pass", key ))
+ server.pass = strdup( val );
+ else if (!strcasecmp( "Port", key ))
+ server.port = git_config_int( key, val );
+ else if (!strcasecmp( "Tunnel", key ))
+ server.tunnel = strdup( val );
+#if HAVE_LIBSSL
+ else if (!strcasecmp( "CertificateFile", key ))
+ server.cert_file = expand_strdup( val );
+ else if (!strcasecmp( "RequireSSL", key ))
+ server.require_ssl = git_config_bool( key, val );
+ else if (!strcasecmp( "UseSSLv2", key ))
+ server.use_sslv2 = git_config_bool( key, val );
+ else if (!strcasecmp( "UseSSLv3", key ))
+ server.use_sslv3 = git_config_bool( key, val );
+ else if (!strcasecmp( "UseTLSv1", key ))
+ server.use_tlsv1 = git_config_bool( key, val );
+ else if (!strcasecmp( "RequireCRAM", key ))
+ server.require_cram = git_config_bool( key, val );
+#endif
+ return 0;
+}
+
+int
+main(int argc, char **argv)
+{
+ msg_data_t all_msgs, msg;
+ store_t *ctx = 0;
+ int uid = 0;
+ int ofs = 0;
+ int r;
+ int total, n = 0;
+
+ /* init the random number generator */
+ arc4_init();
+
+ git_config( git_imap_config );
+
+ if (!imap_folder) {
+ fprintf( stderr, "no imap store specified\n" );
+ return 1;
+ }
+
+ /* read the messages */
+ if (!read_message( stdin, &all_msgs )) {
+ fprintf(stderr,"nothing to send\n");
+ return 1;
+ }
+
+ /* write it to the imap server */
+ ctx = imap_open_store( &server );
+ if (!ctx) {
+ fprintf(stderr,"failed to open store\n");
+ return 1;
+ }
+
+ total = count_messages( &all_msgs );
+ fprintf( stderr, "sending %d messages\n", total );
+ ctx->name = imap_folder;
+ while (1) {
+ fprintf( stderr, "sent (%d/%d)\r", n, total );
+ if (!split_msg( &all_msgs, &msg, &ofs ))
+ break;
+ r = imap_store_msg( ctx, &msg, &uid );
+ if (r != DRV_OK) break;
+ n++;
+ }
+ fprintf( stderr,"\n" );
+
+ imap_close_store( ctx );
+
+ return 0;
+}