t3700: Skip a test with backslashes in pathspec
[gitweb.git] / imap-send.c
index db6559725e6867131800b6682348ebbf896ddbf5..8154cb2116da9257ecf286c46f77fc1ed2a62afc 100644 (file)
  */
 
 #include "cache.h"
+#include "exec_cmd.h"
+#ifdef NO_OPENSSL
+typedef void *SSL;
+#endif
 
-typedef struct store_conf {
+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 {
        struct string_list *next;
        char string[1];
-} string_list_t;
+};
 
-typedef struct channel_conf {
+struct channel_conf {
        struct channel_conf *next;
        char *name;
-       store_conf_t *master, *slave;
+       struct store_conf *master, *slave;
        char *master_name, *slave_name;
        char *sync_state;
-       string_list_t *patterns;
+       struct string_list *patterns;
        int mops, sops;
        unsigned max_messages; /* for slave only */
-} channel_conf_t;
+};
 
-typedef struct group_conf {
+struct group_conf {
        struct group_conf *next;
        char *name;
-       string_list_t *channels;
-} group_conf_t;
+       struct string_list *channels;
+};
 
 /* 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 */
 
-typedef struct message {
+struct message {
        struct message *next;
-       /* string_list_t *keywords; */
+       /* struct string_list *keywords; */
        size_t size; /* zero implies "not fetched" */
        int uid;
        unsigned char flags, status;
-} message_t;
+};
 
-typedef struct store {
-       store_conf_t *conf; /* foreign */
+struct store {
+       struct store_conf *conf; /* foreign */
 
        /* currently open mailbox */
        const char *name; /* foreign! maybe preset? */
        char *path; /* own */
-       message_t *msgs; /* own */
+       struct message *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 {
+struct msg_data {
        char *data;
        int len;
        unsigned char flags;
        unsigned int crlf:1;
-} msg_data_t;
+};
 
 #define DRV_OK          0
 #define DRV_MSG_BAD     -1
@@ -96,14 +100,14 @@ typedef struct {
 
 static int Verbose, Quiet;
 
-static void imap_info( const char *, ... );
-static void imap_warn( const char *, ... );
+static void imap_info(const char *, ...);
+static void imap_warn(const char *, ...);
 
-static char *next_arg( char ** );
+static char *next_arg(char **);
 
-static void free_generic_messages( message_t * );
+static void free_generic_messages(struct message *);
 
-static int nfsnprintf( char *buf, int blen, const char *fmt, ... );
+static int nfsnprintf(char *buf, int blen, const char *fmt, ...);
 
 static int nfvasprintf(char **strp, const char *fmt, va_list ap)
 {
@@ -112,74 +116,78 @@ static int nfvasprintf(char **strp, const char *fmt, va_list ap)
 
        len = vsnprintf(tmp, sizeof(tmp), fmt, ap);
        if (len < 0)
-               die("Fatal: Out of memory\n");
+               die("Fatal: Out of memory");
        if (len >= sizeof(tmp))
-               die("imap command overflow !\n");
+               die("imap command overflow!");
        *strp = xmemdupz(tmp, len);
        return len;
 }
 
-static void arc4_init( void );
-static unsigned char arc4_getbyte( void );
+static void arc4_init(void);
+static unsigned char arc4_getbyte(void);
 
-typedef struct imap_server_conf {
+struct imap_server_conf {
        char *name;
        char *tunnel;
        char *host;
        int port;
        char *user;
        char *pass;
-} imap_server_conf_t;
+       int use_ssl;
+       int ssl_verify;
+       int use_html;
+};
 
-typedef struct imap_store_conf {
-       store_conf_t gen;
-       imap_server_conf_t *server;
+struct imap_store_conf {
+       struct store_conf gen;
+       struct imap_server_conf *server;
        unsigned use_namespace:1;
-} imap_store_conf_t;
+};
 
-#define NIL    (void*)0x1
-#define LIST   (void*)0x2
+#define NIL    (void *)0x1
+#define LIST   (void *)0x2
 
-typedef struct _list {
-       struct _list *next, *child;
+struct imap_list {
+       struct imap_list *next, *child;
        char *val;
        int len;
-} list_t;
+};
 
-typedef struct {
+struct imap_socket {
        int fd;
-} Socket_t;
+       SSL *ssl;
+};
 
-typedef struct {
-       Socket_t sock;
+struct imap_buffer {
+       struct imap_socket sock;
        int bytes;
        int offset;
        char buf[1024];
-} buffer_t;
+};
 
 struct imap_cmd;
 
-typedef struct imap {
+struct imap {
        int uidnext; /* from SELECT responses */
-       list_t *ns_personal, *ns_other, *ns_shared; /* NAMESPACE info */
+       struct imap_list *ns_personal, *ns_other, *ns_shared; /* NAMESPACE info */
        unsigned caps, rcaps; /* CAPABILITY results */
        /* command queue */
        int nexttag, num_in_progress, literal_pending;
        struct imap_cmd *in_progress, **in_progress_append;
-       buffer_t buf; /* this is BIG, so put it last */
-} imap_t;
+       struct imap_buffer buf; /* this is BIG, so put it last */
+};
 
-typedef struct imap_store {
-       store_t gen;
+struct imap_store {
+       struct store gen;
        int uidvalidity;
-       imap_t *imap;
+       struct imap *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);
+       int (*cont)(struct imap_store *ctx, struct imap_cmd *cmd, const char *prompt);
+       void (*done)(struct imap_store *ctx, struct imap_cmd *cmd, int response);
        void *ctx;
        char *data;
        int dlen;
@@ -201,6 +209,7 @@ enum CAPABILITY {
        UIDPLUS,
        LITERALPLUS,
        NAMESPACE,
+       STARTTLS,
 };
 
 static const char *cap_list[] = {
@@ -208,13 +217,14 @@ static const char *cap_list[] = {
        "UIDPLUS",
        "LITERAL+",
        "NAMESPACE",
+       "STARTTLS",
 };
 
 #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 int get_cmd_result(struct imap_store *ctx, struct imap_cmd *tcmd);
 
 
 static const char *Flags[] = {
@@ -225,42 +235,137 @@ static const char *Flags[] = {
        "Deleted",
 };
 
-static void
-socket_perror( const char *func, Socket_t *sock, int ret )
+#ifndef NO_OPENSSL
+static void ssl_socket_perror(const char *func)
+{
+       fprintf(stderr, "%s: %s\n", func, ERR_error_string(ERR_get_error(), 0));
+}
+#endif
+
+static void socket_perror(const char *func, struct imap_socket *sock, int ret)
+{
+#ifndef NO_OPENSSL
+       if (sock->ssl) {
+               int sslerr = SSL_get_error(sock->ssl, ret);
+               switch (sslerr) {
+               case SSL_ERROR_NONE:
+                       break;
+               case SSL_ERROR_SYSCALL:
+                       perror("SSL_connect");
+                       break;
+               default:
+                       ssl_socket_perror("SSL_connect");
+                       break;
+               }
+       } else
+#endif
+       {
+               if (ret < 0)
+                       perror(func);
+               else
+                       fprintf(stderr, "%s: unexpected EOF\n", func);
+       }
+}
+
+static int ssl_socket_connect(struct imap_socket *sock, int use_tls_only, int verify)
 {
-       if (ret < 0)
-               perror( func );
+#ifdef NO_OPENSSL
+       fprintf(stderr, "SSL requested but SSL support not compiled in\n");
+       return -1;
+#else
+       SSL_METHOD *meth;
+       SSL_CTX *ctx;
+       int ret;
+
+       SSL_library_init();
+       SSL_load_error_strings();
+
+       if (use_tls_only)
+               meth = TLSv1_method();
        else
-               fprintf( stderr, "%s: unexpected EOF\n", func );
+               meth = SSLv23_method();
+
+       if (!meth) {
+               ssl_socket_perror("SSLv23_method");
+               return -1;
+       }
+
+       ctx = SSL_CTX_new(meth);
+
+       if (verify)
+               SSL_CTX_set_verify(ctx, SSL_VERIFY_PEER, NULL);
+
+       if (!SSL_CTX_set_default_verify_paths(ctx)) {
+               ssl_socket_perror("SSL_CTX_set_default_verify_paths");
+               return -1;
+       }
+       sock->ssl = SSL_new(ctx);
+       if (!sock->ssl) {
+               ssl_socket_perror("SSL_new");
+               return -1;
+       }
+       if (!SSL_set_fd(sock->ssl, sock->fd)) {
+               ssl_socket_perror("SSL_set_fd");
+               return -1;
+       }
+
+       ret = SSL_connect(sock->ssl);
+       if (ret <= 0) {
+               socket_perror("SSL_connect", sock, ret);
+               return -1;
+       }
+
+       return 0;
+#endif
 }
 
-static int
-socket_read( Socket_t *sock, char *buf, int len )
+static int socket_read(struct imap_socket *sock, char *buf, int len)
 {
-       ssize_t n = xread( sock->fd, buf, len );
+       ssize_t n;
+#ifndef NO_OPENSSL
+       if (sock->ssl)
+               n = SSL_read(sock->ssl, buf, len);
+       else
+#endif
+               n = xread(sock->fd, buf, len);
        if (n <= 0) {
-               socket_perror( "read", sock, n );
-               close( sock->fd );
+               socket_perror("read", sock, n);
+               close(sock->fd);
                sock->fd = -1;
        }
        return n;
 }
 
-static int
-socket_write( Socket_t *sock, const char *buf, int len )
+static int socket_write(struct imap_socket *sock, const char *buf, int len)
 {
-       int n = write_in_full( sock->fd, buf, len );
+       int n;
+#ifndef NO_OPENSSL
+       if (sock->ssl)
+               n = SSL_write(sock->ssl, buf, len);
+       else
+#endif
+               n = write_in_full(sock->fd, buf, len);
        if (n != len) {
-               socket_perror( "write", sock, n );
-               close( sock->fd );
+               socket_perror("write", sock, n);
+               close(sock->fd);
                sock->fd = -1;
        }
        return n;
 }
 
+static void socket_shutdown(struct imap_socket *sock)
+{
+#ifndef NO_OPENSSL
+       if (sock->ssl) {
+               SSL_shutdown(sock->ssl);
+               SSL_free(sock->ssl);
+       }
+#endif
+       close(sock->fd);
+}
+
 /* simple line buffering */
-static int
-buffer_gets( buffer_t * b, char **s )
+static int buffer_gets(struct imap_buffer *b, char **s)
 {
        int n;
        int start = b->offset;
@@ -274,7 +379,7 @@ buffer_gets( buffer_t * b, char **s )
                                /* shift down used bytes */
                                *s = b->buf;
 
-                               assert( start <= b->bytes );
+                               assert(start <= b->bytes);
                                n = b->bytes - start;
 
                                if (n)
@@ -284,8 +389,8 @@ buffer_gets( buffer_t * b, char **s )
                                start = 0;
                        }
 
-                       n = socket_read( &b->sock, b->buf + b->bytes,
-                                        sizeof(b->buf) - b->bytes );
+                       n = socket_read(&b->sock, b->buf + b->bytes,
+                                        sizeof(b->buf) - b->bytes);
 
                        if (n <= 0)
                                return -1;
@@ -294,12 +399,12 @@ buffer_gets( buffer_t * b, char **s )
                }
 
                if (b->buf[b->offset] == '\r') {
-                       assert( b->offset + 1 < b->bytes );
+                       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 );
+                                       puts(*s);
                                return 0;
                        }
                }
@@ -309,39 +414,36 @@ buffer_gets( buffer_t * b, char **s )
        /* not reached */
 }
 
-static void
-imap_info( const char *msg, ... )
+static void imap_info(const char *msg, ...)
 {
        va_list va;
 
        if (!Quiet) {
-               va_start( va, msg );
-               vprintf( msg, va );
-               va_end( va );
-               fflush( stdout );
+               va_start(va, msg);
+               vprintf(msg, va);
+               va_end(va);
+               fflush(stdout);
        }
 }
 
-static void
-imap_warn( const char *msg, ... )
+static void imap_warn(const char *msg, ...)
 {
        va_list va;
 
        if (Quiet < 2) {
-               va_start( va, msg );
-               vfprintf( stderr, msg, va );
-               va_end( va );
+               va_start(va, msg);
+               vfprintf(stderr, msg, va);
+               va_end(va);
        }
 }
 
-static char *
-next_arg( char **s )
+static char *next_arg(char **s)
 {
        char *ret;
 
        if (!s || !*s)
                return NULL;
-       while (isspace( (unsigned char) **s ))
+       while (isspace((unsigned char) **s))
                (*s)++;
        if (!**s) {
                *s = NULL;
@@ -350,10 +452,10 @@ next_arg( char **s )
        if (**s == '"') {
                ++*s;
                ret = *s;
-               *s = strchr( *s, '"' );
+               *s = strchr(*s, '"');
        } else {
                ret = *s;
-               while (**s && !isspace( (unsigned char) **s ))
+               while (**s && !isspace((unsigned char) **s))
                        (*s)++;
        }
        if (*s) {
@@ -365,27 +467,25 @@ next_arg( char **s )
        return ret;
 }
 
-static void
-free_generic_messages( message_t *msgs )
+static void free_generic_messages(struct message *msgs)
 {
-       message_t *tmsg;
+       struct message *tmsg;
 
        for (; msgs; msgs = tmsg) {
                tmsg = msgs->next;
-               free( msgs );
+               free(msgs);
        }
 }
 
-static int
-nfsnprintf( char *buf, int blen, const char *fmt, ... )
+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 );
+       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.");
+       va_end(va);
        return ret;
 }
 
@@ -393,21 +493,20 @@ static struct {
        unsigned char i, j, s[256];
 } rs;
 
-static void
-arc4_init( void )
+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 ((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_in_full( fd, dat, 128 ) != 128) {
-               fprintf( stderr, "Fatal: cannot read random number source.\n" );
-               exit( 3 );
+       if (read_in_full(fd, dat, 128) != 128) {
+               fprintf(stderr, "Fatal: cannot read random number source.\n");
+               exit(3);
        }
-       close( fd );
+       close(fd);
 
        for (i = 0; i < 256; i++)
                rs.s[i] = i;
@@ -423,8 +522,7 @@ arc4_init( void )
                arc4_getbyte();
 }
 
-static unsigned char
-arc4_getbyte( void )
+static unsigned char arc4_getbyte(void)
 {
        unsigned char si, sj;
 
@@ -437,54 +535,53 @@ arc4_getbyte( void )
        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 )
+static struct imap_cmd *v_issue_imap_cmd(struct imap_store *ctx,
+                                        struct imap_cmd_cb *cb,
+                                        const char *fmt, va_list ap)
 {
-       imap_t *imap = ctx->imap;
+       struct imap *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 = 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) );
+               memset(&cmd->cb, 0, sizeof(cmd->cb));
 
        while (imap->literal_pending)
-               get_cmd_result( ctx, NULL );
+               get_cmd_result(ctx, NULL);
 
-       bufl = nfsnprintf( buf, sizeof(buf), cmd->cb.data ? CAP(LITERALPLUS) ?
+       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 );
+                          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 );
+                       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 );
+                       printf(">>> %d LOGIN <user> <pass>\n", cmd->tag);
        }
-       if (socket_write( &imap->buf.sock, buf, bufl ) != bufl) {
-               free( cmd->cmd );
-               free( cmd );
+       if (socket_write(&imap->buf.sock, buf, bufl) != bufl) {
+               free(cmd->cmd);
+               free(cmd);
                if (cb)
-                       free( 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 );
+                       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 );
+                           socket_write(&imap->buf.sock, "\r\n", 2) != 2) {
+                               free(cmd->cmd);
+                               free(cmd);
                                return NULL;
                        }
                        cmd->cb.data = NULL;
@@ -499,109 +596,106 @@ v_issue_imap_cmd( imap_store_t *ctx, struct imap_cmd_cb *cb,
        return cmd;
 }
 
-static struct imap_cmd *
-issue_imap_cmd( imap_store_t *ctx, struct imap_cmd_cb *cb, const char *fmt, ... )
+static struct imap_cmd *issue_imap_cmd(struct imap_store *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 );
+       va_start(ap, fmt);
+       ret = v_issue_imap_cmd(ctx, cb, fmt, ap);
+       va_end(ap);
        return ret;
 }
 
-static int
-imap_exec( imap_store_t *ctx, struct imap_cmd_cb *cb, const char *fmt, ... )
+static int imap_exec(struct imap_store *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 );
+       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 );
+       return get_cmd_result(ctx, cmdp);
 }
 
-static int
-imap_exec_m( imap_store_t *ctx, struct imap_cmd_cb *cb, const char *fmt, ... )
+static int imap_exec_m(struct imap_store *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 );
+       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 )) {
+       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 int
-is_atom( list_t *list )
+static int is_atom(struct imap_list *list)
 {
        return list && list->val && list->val != NIL && list->val != LIST;
 }
 
-static int
-is_list( list_t *list )
+static int is_list(struct imap_list *list)
 {
        return list && list->val == LIST;
 }
 
-static void
-free_list( list_t *list )
+static void free_list(struct imap_list *list)
 {
-       list_t *tmp;
+       struct imap_list *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 );
+               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 )
+static int parse_imap_list_l(struct imap *imap, char **sp, struct imap_list **curp, int level)
 {
-       list_t *cur;
+       struct imap_list *cur;
        char *s = *sp, *p;
        int n, bytes;
 
        for (;;) {
-               while (isspace( (unsigned char)*s ))
+               while (isspace((unsigned char)*s))
                        s++;
                if (level && *s == ')') {
                        s++;
                        break;
                }
-               *curp = cur = xmalloc( sizeof(*cur) );
+               *curp = cur = xmalloc(sizeof(*cur));
                curp = &cur->next;
                cur->val = NULL; /* for clean bail */
                if (*s == '(') {
                        /* sublist */
                        s++;
                        cur->val = LIST;
-                       if (parse_imap_list_l( imap, &s, &cur->child, level + 1 ))
+                       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 );
+                       bytes = cur->len = strtol(s + 1, &s, 10);
                        if (*s != '}')
                                goto bail;
 
-                       s = cur->val = xmalloc( cur->len );
+                       s = cur->val = xmalloc(cur->len);
 
                        /* dump whats left over in the input buffer */
                        n = imap->buf.bytes - imap->buf.offset;
@@ -610,7 +704,7 @@ parse_imap_list_l( imap_t *imap, char **sp, list_t **curp, int level )
                                /* the entire message fit in the buffer */
                                n = bytes;
 
-                       memcpy( s, imap->buf.buf + imap->buf.offset, n );
+                       memcpy(s, imap->buf.buf + imap->buf.offset, n);
                        s += n;
                        bytes -= n;
 
@@ -619,13 +713,13 @@ parse_imap_list_l( imap_t *imap, char **sp, list_t **curp, int level )
 
                        /* now read the rest of the message */
                        while (bytes > 0) {
-                               if ((n = socket_read (&imap->buf.sock, s, bytes)) <= 0)
+                               if ((n = socket_read(&imap->buf.sock, s, bytes)) <= 0)
                                        goto bail;
                                s += n;
                                bytes -= n;
                        }
 
-                       if (buffer_gets( &imap->buf, &s ))
+                       if (buffer_gets(&imap->buf, &s))
                                goto bail;
                } else if (*s == '"') {
                        /* quoted string */
@@ -640,15 +734,14 @@ parse_imap_list_l( imap_t *imap, char **sp, list_t **curp, int level )
                } else {
                        /* atom */
                        p = s;
-                       for (; *s && !isspace( (unsigned char)*s ); s++)
+                       for (; *s && !isspace((unsigned char)*s); s++)
                                if (level && *s == ')')
                                        break;
                        cur->len = s - p;
-                       if (cur->len == 3 && !memcmp ("NIL", p, 3)) {
+                       if (cur->len == 3 && !memcmp("NIL", p, 3))
                                cur->val = NIL;
-                       } else {
+                       else
                                cur->val = xmemdupz(p, cur->len);
-                       }
                }
 
                if (!level)
@@ -660,127 +753,122 @@ parse_imap_list_l( imap_t *imap, char **sp, list_t **curp, int level )
        *curp = NULL;
        return 0;
 
-  bail:
+bail:
        *curp = NULL;
        return -1;
 }
 
-static list_t *
-parse_imap_list( imap_t *imap, char **sp )
+static struct imap_list *parse_imap_list(struct imap *imap, char **sp)
 {
-       list_t *head;
+       struct imap_list *head;
 
-       if (!parse_imap_list_l( imap, sp, &head, 0 ))
+       if (!parse_imap_list_l(imap, sp, &head, 0))
                return head;
-       free_list( head );
+       free_list(head);
        return NULL;
 }
 
-static list_t *
-parse_list( char **sp )
+static struct imap_list *parse_list(char **sp)
 {
-       return parse_imap_list( NULL, sp );
+       return parse_imap_list(NULL, sp);
 }
 
-static void
-parse_capability( imap_t *imap, char *cmd )
+static void parse_capability(struct imap *imap, char *cmd)
 {
        char *arg;
        unsigned i;
 
        imap->caps = 0x80000000;
-       while ((arg = next_arg( &cmd )))
+       while ((arg = next_arg(&cmd)))
                for (i = 0; i < ARRAY_SIZE(cap_list); i++)
-                       if (!strcmp( cap_list[i], arg ))
+                       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 )
+static int parse_response_code(struct imap_store *ctx, struct imap_cmd_cb *cb,
+                              char *s)
 {
-       imap_t *imap = ctx->imap;
+       struct imap *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" );
+       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" );
+       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" );
+       } 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 )) {
+       } 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" );
+               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 )
+static int get_cmd_result(struct imap_store *ctx, struct imap_cmd *tcmd)
 {
-       imap_t *imap = ctx->imap;
+       struct imap *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 ))
+               if (buffer_gets(&imap->buf, &cmd))
                        return RESP_BAD;
 
-               arg = next_arg( &cmd );
+               arg = next_arg(&cmd);
                if (*arg == '*') {
-                       arg = next_arg( &cmd );
+                       arg = next_arg(&cmd);
                        if (!arg) {
-                               fprintf( stderr, "IMAP error: unable to parse untagged response\n" );
+                               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, NULL, cmd )) != RESP_OK)
+                       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, NULL, 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("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 {
-                               fprintf( stderr, "IMAP error: unable to parse untagged response\n" );
+                               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 : "" );
+                       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
@@ -788,57 +876,57 @@ get_cmd_result( imap_store_t *ctx, struct imap_cmd *tcmd )
                        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 );
+                               n = socket_write(&imap->buf.sock, cmdp->cb.data, cmdp->cb.dlen);
+                               free(cmdp->cb.data);
                                cmdp->cb.data = NULL;
                                if (n != (int)cmdp->cb.dlen)
                                        return RESP_BAD;
                        } else if (cmdp->cb.cont) {
-                               if (cmdp->cb.cont( ctx, cmdp, cmd ))
+                               if (cmdp->cb.cont(ctx, cmdp, cmd))
                                        return RESP_BAD;
                        } else {
-                               fprintf( stderr, "IMAP error: unexpected command continuation request\n" );
+                               fprintf(stderr, "IMAP error: unexpected command continuation request\n");
                                return RESP_BAD;
                        }
-                       if (socket_write( &imap->buf.sock, "\r\n", 2 ) != 2)
+                       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 );
+                       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 );
+                       fprintf(stderr, "IMAP error: unexpected tag %s\n", arg);
                        return RESP_BAD;
-                 gottag:
+               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 ))
+                       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, NULL, "CREATE \"%.*s\"", strchr( p + 1, '"' ) - p + 1, p )) {
+                               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, NULL, "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 ))) {
+                                               if (!(ncmdp = issue_imap_cmd(ctx, &cmdp->cb, "%s", cmdp->cmd))) {
                                                        resp = RESP_BAD;
                                                        goto normal;
                                                }
-                                               free( cmdp->cmd );
-                                               free( cmdp );
+                                               free(cmdp->cmd);
+                                               free(cmdp);
                                                if (!tcmd)
                                                        return 0;       /* ignored */
                                                if (cmdp == tcmd)
@@ -846,21 +934,21 @@ get_cmd_result( imap_store_t *ctx, struct imap_cmd *tcmd )
                                                continue;
                                        }
                                        resp = RESP_NO;
-                               } else /*if (!strcmp( "BAD", arg ))*/
+                               } else /*if (!strcmp("BAD", arg))*/
                                        resp = RESP_BAD;
-                               fprintf( stderr, "IMAP command '%s' returned response (%s) - %s\n",
-                                        memcmp (cmdp->cmd, "LOGIN", 5) ?
+                               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)
+                       if ((resp2 = parse_response_code(ctx, &cmdp->cb, cmd)) > resp)
                                resp = resp2;
-                 normal:
+               normal:
                        if (cmdp->cb.done)
-                               cmdp->cb.done( ctx, cmdp, resp );
-                       free( cmdp->cb.data );
-                       free( cmdp->cmd );
-                       free( cmdp );
+                               cmdp->cb.done(ctx, cmdp, resp);
+                       free(cmdp->cb.data);
+                       free(cmdp->cmd);
+                       free(cmdp);
                        if (!tcmd || tcmd == cmdp)
                                return resp;
                }
@@ -868,170 +956,184 @@ get_cmd_result( imap_store_t *ctx, struct imap_cmd *tcmd )
        /* not reached */
 }
 
-static void
-imap_close_server( imap_store_t *ictx )
+static void imap_close_server(struct imap_store *ictx)
 {
-       imap_t *imap = ictx->imap;
+       struct imap *imap = ictx->imap;
 
        if (imap->buf.sock.fd != -1) {
-               imap_exec( ictx, NULL, "LOGOUT" );
-               close( imap->buf.sock.fd );
+               imap_exec(ictx, NULL, "LOGOUT");
+               socket_shutdown(&imap->buf.sock);
        }
-       free_list( imap->ns_personal );
-       free_list( imap->ns_other );
-       free_list( imap->ns_shared );
-       free( imap );
+       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 )
+static void imap_close_store(struct store *ctx)
 {
-       imap_close_server( (imap_store_t *)ctx );
-       free_generic_messages( ctx->msgs );
-       free( ctx );
+       imap_close_server((struct imap_store *)ctx);
+       free_generic_messages(ctx->msgs);
+       free(ctx);
 }
 
-static store_t *
-imap_open_store( imap_server_conf_t *srvc )
+static struct store *imap_open_store(struct imap_server_conf *srvc)
 {
-       imap_store_t *ctx;
-       imap_t *imap;
+       struct imap_store *ctx;
+       struct imap *imap;
        char *arg, *rsp;
        struct hostent *he;
        struct sockaddr_in addr;
        int s, a[2], preauth;
        pid_t pid;
 
-       ctx = xcalloc( sizeof(*ctx), 1 );
+       ctx = xcalloc(sizeof(*ctx), 1);
 
-       ctx->imap = imap = xcalloc( sizeof(*imap), 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 (srvc->tunnel) {
-               imap_info( "Starting tunnel '%s'... ", srvc->tunnel );
+               imap_info("Starting tunnel '%s'... ", srvc->tunnel);
 
-               if (socketpair( PF_UNIX, SOCK_STREAM, 0, a )) {
-                       perror( "socketpair" );
-                       exit( 1 );
+               if (socketpair(PF_UNIX, SOCK_STREAM, 0, a)) {
+                       perror("socketpair");
+                       exit(1);
                }
 
                pid = fork();
                if (pid < 0)
-                       _exit( 127 );
+                       _exit(127);
                if (!pid) {
-                       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, NULL );
-                       _exit( 127 );
+                       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, NULL);
+                       _exit(127);
                }
 
-               close (a[0]);
+               close(a[0]);
 
                imap->buf.sock.fd = a[1];
 
-               imap_info( "ok\n" );
+               imap_info("ok\n");
        } else {
-               memset( &addr, 0, sizeof(addr) );
-               addr.sin_port = htons( srvc->port );
+               memset(&addr, 0, sizeof(addr));
+               addr.sin_port = htons(srvc->port);
                addr.sin_family = AF_INET;
 
-               imap_info( "Resolving %s... ", srvc->host );
-               he = gethostbyname( srvc->host );
+               imap_info("Resolving %s... ", srvc->host);
+               he = gethostbyname(srvc->host);
                if (!he) {
-                       perror( "gethostbyname" );
+                       perror("gethostbyname");
                        goto bail;
                }
-               imap_info( "ok\n" );
+               imap_info("ok\n");
 
                addr.sin_addr.s_addr = *((int *) he->h_addr_list[0]);
 
-               s = socket( PF_INET, SOCK_STREAM, 0 );
+               s = socket(PF_INET, SOCK_STREAM, 0);
 
-               imap_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" );
+               imap_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;
                }
-               imap_info( "ok\n" );
 
                imap->buf.sock.fd = s;
 
+               if (srvc->use_ssl &&
+                   ssl_socket_connect(&imap->buf.sock, 0, srvc->ssl_verify)) {
+                       close(s);
+                       goto bail;
+               }
+               imap_info("ok\n");
        }
 
        /* read the greeting string */
-       if (buffer_gets( &imap->buf, &rsp )) {
-               fprintf( stderr, "IMAP error: no greeting response\n" );
+       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" );
+       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 ))
+       if (!strcmp("PREAUTH", arg))
                preauth = 1;
-       else if (strcmp( "OK", arg ) != 0) {
-               fprintf( stderr, "IMAP error: unknown greeting response\n" );
+       else if (strcmp("OK", arg) != 0) {
+               fprintf(stderr, "IMAP error: unknown greeting response\n");
                goto bail;
        }
-       parse_response_code( ctx, NULL, rsp );
-       if (!imap->caps && imap_exec( ctx, NULL, "CAPABILITY" ) != RESP_OK)
+       parse_response_code(ctx, NULL, rsp);
+       if (!imap->caps && imap_exec(ctx, NULL, "CAPABILITY") != RESP_OK)
                goto bail;
 
        if (!preauth) {
-
-               imap_info ("Logging in...\n");
+#ifndef NO_OPENSSL
+               if (!srvc->use_ssl && CAP(STARTTLS)) {
+                       if (imap_exec(ctx, 0, "STARTTLS") != RESP_OK)
+                               goto bail;
+                       if (ssl_socket_connect(&imap->buf.sock, 1,
+                                              srvc->ssl_verify))
+                               goto bail;
+                       /* capabilities may have changed, so get the new capabilities */
+                       if (imap_exec(ctx, 0, "CAPABILITY") != RESP_OK)
+                               goto bail;
+               }
+#endif
+               imap_info("Logging in...\n");
                if (!srvc->user) {
-                       fprintf( stderr, "Skipping server %s, no user\n", srvc->host );
+                       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 );
+                       sprintf(prompt, "Password (%s@%s): ", srvc->user, srvc->host);
+                       arg = getpass(prompt);
                        if (!arg) {
-                               perror( "getpass" );
-                               exit( 1 );
+                               perror("getpass");
+                               exit(1);
                        }
                        if (!*arg) {
-                               fprintf( stderr, "Skipping account %s@%s, no password\n", srvc->user, srvc->host );
+                               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 = xstrdup( arg );
+                       srvc->pass = xstrdup(arg);
                }
                if (CAP(NOLOGIN)) {
-                       fprintf( stderr, "Skipping account %s@%s, server forbids LOGIN\n", srvc->user, srvc->host );
+                       fprintf(stderr, "Skipping account %s@%s, server forbids LOGIN\n", srvc->user, srvc->host);
                        goto bail;
                }
-               imap_warn( "*** IMAP Warning *** Password is being sent in the clear\n" );
-               if (imap_exec( ctx, NULL, "LOGIN \"%s\" \"%s\"", srvc->user, srvc->pass ) != RESP_OK) {
-                       fprintf( stderr, "IMAP error: LOGIN failed\n" );
+               if (!imap->buf.sock.ssl)
+                       imap_warn("*** IMAP Warning *** Password is being "
+                                 "sent in the clear\n");
+               if (imap_exec(ctx, NULL, "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;
+       return (struct store *)ctx;
 
-  bail:
-       imap_close_store( &ctx->gen );
+bail:
+       imap_close_store(&ctx->gen);
        return NULL;
 }
 
-static int
-imap_make_flags( int flags, char *buf )
+static int imap_make_flags(int flags, char *buf)
 {
        const char *s;
        unsigned i, d;
@@ -1050,11 +1152,10 @@ imap_make_flags( int flags, char *buf )
 
 #define TUIDL 8
 
-static int
-imap_store_msg( store_t *gctx, msg_data_t *data, int *uid )
+static int imap_store_msg(struct store *gctx, struct msg_data *data, int *uid)
 {
-       imap_store_t *ctx = (imap_store_t *)gctx;
-       imap_t *imap = ctx->imap;
+       struct imap_store *ctx = (struct imap_store *)gctx;
+       struct imap *imap = ctx->imap;
        struct imap_cmd_cb cb;
        char *fmap, *buf;
        const char *prefix, *box;
@@ -1062,14 +1163,14 @@ imap_store_msg( store_t *gctx, msg_data_t *data, int *uid )
        int start, sbreak = 0, ebreak = 0;
        char flagstr[128], tuid[TUIDL * 2 + 1];
 
-       memset( &cb, 0, sizeof(cb) );
+       memset(&cb, 0, sizeof(cb));
 
        fmap = data->data;
        len = data->len;
        nocr = !data->crlf;
        extra = 0, i = 0;
        if (!CAP(UIDPLUS) && uid) {
-         nloop:
+       nloop:
                start = i;
                while (i < len)
                        if (fmap[i++] == '\n') {
@@ -1078,18 +1179,18 @@ imap_store_msg( store_t *gctx, msg_data_t *data, int *uid )
                                        sbreak = ebreak = i - 2 + nocr;
                                        goto mktid;
                                }
-                               if (!memcmp( fmap + start, "X-TUID: ", 8 )) {
+                               if (!memcmp(fmap + start, "X-TUID: ", 8)) {
                                        extra -= (ebreak = i) - (sbreak = start) + nocr;
                                        goto mktid;
                                }
                                goto nloop;
                        }
                /* invalid message */
-               free( fmap );
+               free(fmap);
                return DRV_MSG_BAD;
-        mktid:
+       mktid:
                for (j = 0; j < TUIDL; j++)
-                       sprintf( tuid + j * 2, "%02x", arc4_getbyte() );
+                       sprintf(tuid + j * 2, "%02x", arc4_getbyte());
                extra += 8 + TUIDL * 2 + 2;
        }
        if (nocr)
@@ -1098,7 +1199,7 @@ imap_store_msg( store_t *gctx, msg_data_t *data, int *uid )
                                extra++;
 
        cb.dlen = len + extra;
-       buf = cb.data = xmalloc( cb.dlen );
+       buf = cb.data = xmalloc(cb.dlen);
        i = 0;
        if (!CAP(UIDPLUS) && uid) {
                if (nocr) {
@@ -1109,12 +1210,12 @@ imap_store_msg( store_t *gctx, msg_data_t *data, int *uid )
                                } else
                                        *buf++ = fmap[i];
                } else {
-                       memcpy( buf, fmap, sbreak );
+                       memcpy(buf, fmap, sbreak);
                        buf += sbreak;
                }
-               memcpy( buf, "X-TUID: ", 8 );
+               memcpy(buf, "X-TUID: ", 8);
                buf += 8;
-               memcpy( buf, tuid, TUIDL * 2 );
+               memcpy(buf, tuid, TUIDL * 2);
                buf += TUIDL * 2;
                *buf++ = '\r';
                *buf++ = '\n';
@@ -1128,13 +1229,13 @@ imap_store_msg( store_t *gctx, msg_data_t *data, int *uid )
                        } else
                                *buf++ = fmap[i];
        } else
-               memcpy( buf, fmap + i, len - i );
+               memcpy(buf, fmap + i, len - i);
 
-       free( fmap );
+       free(fmap);
 
        d = 0;
        if (data->flags) {
-               d = imap_make_flags( data->flags, flagstr );
+               d = imap_make_flags(data->flags, flagstr);
                flagstr[d++] = ' ';
        }
        flagstr[d] = 0;
@@ -1147,11 +1248,11 @@ imap_store_msg( store_t *gctx, msg_data_t *data, int *uid )
                        imap->caps = imap->rcaps & ~(1 << LITERALPLUS);
        } else {
                box = gctx->name;
-               prefix = !strcmp( box, "INBOX" ) ? "" : ctx->prefix;
+               prefix = !strcmp(box, "INBOX") ? "" : ctx->prefix;
                cb.create = 0;
        }
        cb.ctx = uid;
-       ret = imap_exec_m( ctx, &cb, "APPEND \"%s%s\" %s", prefix, box, flagstr );
+       ret = imap_exec_m(ctx, &cb, "APPEND \"%s%s\" %s", prefix, box, flagstr);
        imap->caps = imap->rcaps;
        if (ret != DRV_OK)
                return ret;
@@ -1163,15 +1264,60 @@ imap_store_msg( store_t *gctx, msg_data_t *data, int *uid )
        return DRV_OK;
 }
 
+static void encode_html_chars(struct strbuf *p)
+{
+       int i;
+       for (i = 0; i < p->len; i++) {
+               if (p->buf[i] == '&')
+                       strbuf_splice(p, i, 1, "&amp;", 5);
+               if (p->buf[i] == '<')
+                       strbuf_splice(p, i, 1, "&lt;", 4);
+               if (p->buf[i] == '>')
+                       strbuf_splice(p, i, 1, "&gt;", 4);
+               if (p->buf[i] == '"')
+                       strbuf_splice(p, i, 1, "&quot;", 6);
+       }
+}
+static void wrap_in_html(struct msg_data *msg)
+{
+       struct strbuf buf = STRBUF_INIT;
+       struct strbuf **lines;
+       struct strbuf **p;
+       static char *content_type = "Content-Type: text/html;\n";
+       static char *pre_open = "<pre>\n";
+       static char *pre_close = "</pre>\n";
+       int added_header = 0;
+
+       strbuf_attach(&buf, msg->data, msg->len, msg->len);
+       lines = strbuf_split(&buf, '\n');
+       strbuf_release(&buf);
+       for (p = lines; *p; p++) {
+               if (! added_header) {
+                       if ((*p)->len == 1 && *((*p)->buf) == '\n') {
+                               strbuf_addstr(&buf, content_type);
+                               strbuf_addbuf(&buf, *p);
+                               strbuf_addstr(&buf, pre_open);
+                               added_header = 1;
+                               continue;
+                       }
+               }
+               else
+                       encode_html_chars(*p);
+               strbuf_addbuf(&buf, *p);
+       }
+       strbuf_addstr(&buf, pre_close);
+       strbuf_list_free(lines);
+       msg->len  = buf.len;
+       msg->data = strbuf_detach(&buf, NULL);
+}
+
 #define CHUNKSIZE 0x1000
 
-static int
-read_message( FILE *f, msg_data_t *msg )
+static int read_message(FILE *f, struct msg_data *msg)
 {
-       struct strbuf buf;
+       struct strbuf buf = STRBUF_INIT;
 
        memset(msg, 0, sizeof(*msg));
-       strbuf_init(&buf, 0);
 
        do {
                if (strbuf_fread(&buf, CHUNKSIZE, f) <= 0)
@@ -1183,8 +1329,7 @@ read_message( FILE *f, msg_data_t *msg )
        return msg->len;
 }
 
-static int
-count_messages( msg_data_t *msg )
+static int count_messages(struct msg_data *msg)
 {
        int count = 0;
        char *p = msg->data;
@@ -1194,7 +1339,7 @@ count_messages( msg_data_t *msg )
                        count++;
                        p += 5;
                }
-               p = strstr( p+5, "\nFrom ");
+               p = strstr(p+5, "\nFrom ");
                if (!p)
                        break;
                p++;
@@ -1202,22 +1347,21 @@ count_messages( msg_data_t *msg )
        return count;
 }
 
-static int
-split_msg( msg_data_t *all_msgs, msg_data_t *msg, int *ofs )
+static int split_msg(struct msg_data *all_msgs, struct msg_data *msg, int *ofs)
 {
        char *p, *data;
 
-       memset( msg, 0, sizeof *msg );
+       memset(msg, 0, sizeof *msg);
        if (*ofs >= all_msgs->len)
                return 0;
 
-       data = &all_msgs->data[ *ofs ];
+       data = &all_msgs->data[*ofs];
        msg->len = all_msgs->len - *ofs;
 
        if (msg->len < 5 || prefixcmp(data, "From "))
                return 0;
 
-       p = strchr( data, '\n' );
+       p = strchr(data, '\n');
        if (p) {
                p = &p[1];
                msg->len -= p-data;
@@ -1225,7 +1369,7 @@ split_msg( msg_data_t *all_msgs, msg_data_t *msg, int *ofs )
                data = p;
        }
 
-       p = strstr( data, "\nFrom " );
+       p = strstr(data, "\nFrom ");
        if (p)
                msg->len = &p[1] - data;
 
@@ -1234,24 +1378,25 @@ split_msg( msg_data_t *all_msgs, msg_data_t *msg, int *ofs )
        return 1;
 }
 
-static imap_server_conf_t server =
-{
+static struct imap_server_conf server = {
        NULL,   /* name */
        NULL,   /* tunnel */
        NULL,   /* host */
        0,      /* port */
        NULL,   /* user */
        NULL,   /* pass */
+       0,      /* use_ssl */
+       1,      /* ssl_verify */
+       0,      /* use_html */
 };
 
 static char *imap_folder;
 
-static int
-git_imap_config(const char *key, const char *val)
+static int git_imap_config(const char *key, const char *val, void *cb)
 {
        char imap_key[] = "imap.";
 
-       if (strncmp( key, imap_key, sizeof imap_key - 1 ))
+       if (strncmp(key, imap_key, sizeof imap_key - 1))
                return 0;
 
        if (!val)
@@ -1259,90 +1404,102 @@ git_imap_config(const char *key, const char *val)
 
        key += sizeof imap_key - 1;
 
-       if (!strcmp( "folder", key )) {
-               imap_folder = xstrdup( val );
-       } else if (!strcmp( "host", key )) {
-               {
-                       if (!prefixcmp(val, "imap:"))
-                               val += 5;
-                       if (!server.port)
-                               server.port = 143;
+       if (!strcmp("folder", key)) {
+               imap_folder = xstrdup(val);
+       } else if (!strcmp("host", key)) {
+               if (!prefixcmp(val, "imap:"))
+                       val += 5;
+               else if (!prefixcmp(val, "imaps:")) {
+                       val += 6;
+                       server.use_ssl = 1;
                }
                if (!prefixcmp(val, "//"))
                        val += 2;
-               server.host = xstrdup( val );
-       }
-       else if (!strcmp( "user", key ))
-               server.user = xstrdup( val );
-       else if (!strcmp( "pass", key ))
-               server.pass = xstrdup( val );
-       else if (!strcmp( "port", key ))
-               server.port = git_config_int( key, val );
-       else if (!strcmp( "tunnel", key ))
-               server.tunnel = xstrdup( val );
+               server.host = xstrdup(val);
+       } else if (!strcmp("user", key))
+               server.user = xstrdup(val);
+       else if (!strcmp("pass", key))
+               server.pass = xstrdup(val);
+       else if (!strcmp("port", key))
+               server.port = git_config_int(key, val);
+       else if (!strcmp("tunnel", key))
+               server.tunnel = xstrdup(val);
+       else if (!strcmp("sslverify", key))
+               server.ssl_verify = git_config_bool(key, val);
+       else if (!strcmp("preformattedHTML", key))
+               server.use_html = git_config_bool(key, val);
        return 0;
 }
 
-int
-main(int argc, char **argv)
+int main(int argc, char **argv)
 {
-       msg_data_t all_msgs, msg;
-       store_t *ctx = NULL;
+       struct msg_data all_msgs, msg;
+       struct store *ctx = NULL;
        int uid = 0;
        int ofs = 0;
        int r;
        int total, n = 0;
+       int nongit_ok;
+
+       git_extract_argv0_path(argv[0]);
 
        /* init the random number generator */
        arc4_init();
 
-       git_config( git_imap_config );
+       setup_git_directory_gently(&nongit_ok);
+       git_config(git_imap_config, NULL);
+
+       if (!server.port)
+               server.port = server.use_ssl ? 993 : 143;
 
        if (!imap_folder) {
-               fprintf( stderr, "no imap store specified\n" );
+               fprintf(stderr, "no imap store specified\n");
                return 1;
        }
        if (!server.host) {
                if (!server.tunnel) {
-                       fprintf( stderr, "no imap host specified\n" );
+                       fprintf(stderr, "no imap host specified\n");
                        return 1;
                }
                server.host = "tunnel";
        }
 
        /* read the messages */
-       if (!read_message( stdin, &all_msgs )) {
-               fprintf(stderr,"nothing to send\n");
+       if (!read_message(stdin, &all_msgs)) {
+               fprintf(stderr, "nothing to send\n");
                return 1;
        }
 
-       total = count_messages( &all_msgs );
+       total = count_messages(&all_msgs);
        if (!total) {
-               fprintf(stderr,"no messages to send\n");
+               fprintf(stderr, "no messages to send\n");
                return 1;
        }
 
        /* write it to the imap server */
-       ctx = imap_open_store( &server );
+       ctx = imap_open_store(&server);
        if (!ctx) {
-               fprintf( stderr,"failed to open store\n");
+               fprintf(stderr, "failed to open store\n");
                return 1;
        }
 
-       fprintf( stderr, "sending %d message%s\n", total, (total!=1)?"s":"" );
+       fprintf(stderr, "sending %d message%s\n", total, (total != 1) ? "s" : "");
        ctx->name = imap_folder;
        while (1) {
                unsigned percent = n * 100 / total;
-               fprintf( stderr, "%4u%% (%d/%d) done\r", percent, n, total );
-               if (!split_msg( &all_msgs, &msg, &ofs ))
+               fprintf(stderr, "%4u%% (%d/%d) done\r", percent, n, total);
+               if (!split_msg(&all_msgs, &msg, &ofs))
+                       break;
+               if (server.use_html)
+                       wrap_in_html(&msg);
+               r = imap_store_msg(ctx, &msg, &uid);
+               if (r != DRV_OK)
                        break;
-               r = imap_store_msg( ctx, &msg, &uid );
-               if (r != DRV_OK) break;
                n++;
        }
-       fprintf( stderr,"\n" );
+       fprintf(stderr, "\n");
 
-       imap_close_store( ctx );
+       imap_close_store(ctx);
 
        return 0;
 }