git/imap-send.c

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/*
* git-imap-send - drops patches into an imap Drafts folder
* derived from isync/mbsync - mailbox synchronizer
*
* Copyright (C) 2000-2002 Michael R. Elkins <me@mutt.org>
* Copyright (C) 2002-2004 Oswald Buddenhagen <ossi@users.sf.net>
* Copyright (C) 2004 Theodore Y. Ts'o <tytso@mit.edu>
* 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
*/
#include "cache.h"
#include "exec_cmd.h"
#include "run-command.h"
#include "prompt.h"
#ifdef NO_OPENSSL
typedef void *SSL;
#else
#include <openssl/evp.h>
#include <openssl/hmac.h>
#endif
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;
};
/* 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 */
struct message {
struct message *next;
size_t size; /* zero implies "not fetched" */
int uid;
unsigned char flags, status;
};
struct store {
struct store_conf *conf; /* foreign */
/* currently open mailbox */
const char *name; /* foreign! maybe preset? */
char *path; /* 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 */
};
struct msg_data {
char *data;
int len;
unsigned char flags;
};
static const char imap_send_usage[] = "git imap-send < <mbox>";
#undef DRV_OK
#define DRV_OK 0
#define DRV_MSG_BAD -1
#define DRV_BOX_BAD -2
#define DRV_STORE_BAD -3
static int Verbose, Quiet;
__attribute__((format (printf, 1, 2)))
static void imap_info(const char *, ...);
__attribute__((format (printf, 1, 2)))
static void imap_warn(const char *, ...);
static char *next_arg(char **);
static void free_generic_messages(struct message *);
__attribute__((format (printf, 3, 4)))
static int nfsnprintf(char *buf, int blen, const char *fmt, ...);
static int nfvasprintf(char **strp, const char *fmt, va_list ap)
{
int len;
char tmp[8192];
len = vsnprintf(tmp, sizeof(tmp), fmt, ap);
if (len < 0)
die("Fatal: Out of memory");
if (len >= sizeof(tmp))
die("imap command overflow!");
*strp = xmemdupz(tmp, len);
return len;
}
struct imap_server_conf {
char *name;
char *tunnel;
char *host;
int port;
char *user;
char *pass;
int use_ssl;
int ssl_verify;
int use_html;
char *auth_method;
};
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 */
NULL, /* auth_method */
};
struct imap_store_conf {
struct store_conf gen;
struct imap_server_conf *server;
};
#define NIL (void *)0x1
#define LIST (void *)0x2
struct imap_list {
struct imap_list *next, *child;
char *val;
int len;
};
struct imap_socket {
int fd[2];
SSL *ssl;
};
struct imap_buffer {
struct imap_socket sock;
int bytes;
int offset;
char buf[1024];
};
struct imap_cmd;
struct imap {
int uidnext; /* from SELECT responses */
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;
struct imap_buffer buf; /* this is BIG, so put it last */
};
struct imap_store {
struct store gen;
int uidvalidity;
struct imap *imap;
const char *prefix;
unsigned /*currentnc:1,*/ trashnc:1;
};
struct imap_cmd_cb {
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;
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,
STARTTLS,
AUTH_CRAM_MD5
};
static const char *cap_list[] = {
"LOGINDISABLED",
"UIDPLUS",
"LITERAL+",
"NAMESPACE",
"STARTTLS",
"AUTH=CRAM-MD5",
};
#define RESP_OK 0
#define RESP_NO 1
#define RESP_BAD 2
static int get_cmd_result(struct imap_store *ctx, struct imap_cmd *tcmd);
static const char *Flags[] = {
"Draft",
"Flagged",
"Answered",
"Seen",
"Deleted",
};
#ifndef NO_OPENSSL
static void ssl_socket_perror(const char *func)
{
fprintf(stderr, "%s: %s\n", func, ERR_error_string(ERR_get_error(), NULL));
}
#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)
{
#ifdef NO_OPENSSL
fprintf(stderr, "SSL requested but SSL support not compiled in\n");
return -1;
#else
#if (OPENSSL_VERSION_NUMBER >= 0x10000000L)
const SSL_METHOD *meth;
#else
SSL_METHOD *meth;
#endif
SSL_CTX *ctx;
int ret;
SSL_library_init();
SSL_load_error_strings();
if (use_tls_only)
meth = TLSv1_method();
else
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_rfd(sock->ssl, sock->fd[0])) {
ssl_socket_perror("SSL_set_rfd");
return -1;
}
if (!SSL_set_wfd(sock->ssl, sock->fd[1])) {
ssl_socket_perror("SSL_set_wfd");
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(struct imap_socket *sock, char *buf, int len)
{
ssize_t n;
#ifndef NO_OPENSSL
if (sock->ssl)
n = SSL_read(sock->ssl, buf, len);
else
#endif
n = xread(sock->fd[0], buf, len);
if (n <= 0) {
socket_perror("read", sock, n);
close(sock->fd[0]);
close(sock->fd[1]);
sock->fd[0] = sock->fd[1] = -1;
}
return n;
}
static int socket_write(struct imap_socket *sock, const char *buf, int len)
{
int n;
#ifndef NO_OPENSSL
if (sock->ssl)
n = SSL_write(sock->ssl, buf, len);
else
#endif
n = write_in_full(sock->fd[1], buf, len);
if (n != len) {
socket_perror("write", sock, n);
close(sock->fd[0]);
close(sock->fd[1]);
sock->fd[0] = sock->fd[1] = -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[0]);
close(sock->fd[1]);
}
/* simple line buffering */
static int buffer_gets(struct imap_buffer *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)
memmove(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 imap_info(const char *msg, ...)
{
va_list va;
if (!Quiet) {
va_start(va, msg);
vprintf(msg, va);
va_end(va);
fflush(stdout);
}
}
static void imap_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 NULL;
while (isspace((unsigned char) **s))
(*s)++;
if (!**s) {
*s = NULL;
return NULL;
}
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 = NULL;
}
return ret;
}
static void free_generic_messages(struct message *msgs)
{
struct message *tmsg;
for (; msgs; msgs = tmsg) {
tmsg = msgs->next;
free(msgs);
}
}
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.");
va_end(va);
return ret;
}
static struct imap_cmd *v_issue_imap_cmd(struct imap_store *ctx,
struct imap_cmd_cb *cb,
const char *fmt, va_list ap)
{
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->tag = ++imap->nexttag;
if (cb)
cmd->cb = *cb;
else
memset(&cmd->cb, 0, sizeof(cmd->cb));
while (imap->literal_pending)
get_cmd_result(ctx, NULL);
if (!cmd->cb.data)
bufl = nfsnprintf(buf, sizeof(buf), "%d %s\r\n", cmd->tag, cmd->cmd);
else
bufl = nfsnprintf(buf, sizeof(buf), "%d %s{%d%s}\r\n",
cmd->tag, cmd->cmd, cmd->cb.dlen,
CAP(LITERALPLUS) ? "+" : "");
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);
Avoid unnecessary "if-before-free" tests. This change removes all obvious useless if-before-free tests. E.g., it replaces code like this: if (some_expression) free (some_expression); with the now-equivalent: free (some_expression); It is equivalent not just because POSIX has required free(NULL) to work for a long time, but simply because it has worked for so long that no reasonable porting target fails the test. Here's some evidence from nearly 1.5 years ago: http://www.winehq.org/pipermail/wine-patches/2006-October/031544.html FYI, the change below was prepared by running the following: git ls-files -z | xargs -0 \ perl -0x3b -pi -e \ 's/\bif\s*\(\s*(\S+?)(?:\s*!=\s*NULL)?\s*\)\s+(free\s*\(\s*\1\s*\))/$2/s' Note however, that it doesn't handle brace-enclosed blocks like "if (x) { free (x); }". But that's ok, since there were none like that in git sources. Beware: if you do use the above snippet, note that it can produce syntactically invalid C code. That happens when the affected "if"-statement has a matching "else". E.g., it would transform this if (x) free (x); else foo (); into this: free (x); else foo (); There were none of those here, either. If you're interested in automating detection of the useless tests, you might like the useless-if-before-free script in gnulib: [it *does* detect brace-enclosed free statements, and has a --name=S option to make it detect free-like functions with different names] http://git.sv.gnu.org/gitweb/?p=gnulib.git;a=blob;f=build-aux/useless-if-before-free Addendum: Remove one more (in imap-send.c), spotted by Jean-Luc Herren <jlh@gmx.ch>. Signed-off-by: Jim Meyering <meyering@redhat.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-01-31 17:26:32 +00:00
if (cb)
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 ||
socket_write(&imap->buf.sock, "\r\n", 2) != 2) {
free(cmd->cmd);
free(cmd);
return NULL;
}
cmd->cb.data = NULL;
} else
imap->literal_pending = 1;
} else if (cmd->cb.cont)
imap->literal_pending = 1;
cmd->next = NULL;
*imap->in_progress_append = cmd;
imap->in_progress_append = &cmd->next;
imap->num_in_progress++;
return cmd;
}
__attribute__((format (printf, 3, 4)))
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);
return ret;
}
__attribute__((format (printf, 3, 4)))
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);
if (!cmdp)
return RESP_BAD;
return get_cmd_result(ctx, cmdp);
}
__attribute__((format (printf, 3, 4)))
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);
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 int is_atom(struct imap_list *list)
{
return list && list->val && list->val != NIL && list->val != LIST;
}
static int is_list(struct imap_list *list)
{
return list && list->val == LIST;
}
static void free_list(struct imap_list *list)
{
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);
}
}
static int parse_imap_list_l(struct imap *imap, char **sp, struct imap_list **curp, int level)
{
struct imap_list *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 = NULL; /* 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 = xmemdupz(p, cur->len);
} 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 = xmemdupz(p, cur->len);
}
if (!level)
break;
if (!*s)
goto bail;
}
*sp = s;
*curp = NULL;
return 0;
bail:
*curp = NULL;
return -1;
}
static struct imap_list *parse_imap_list(struct imap *imap, char **sp)
{
struct imap_list *head;
if (!parse_imap_list_l(imap, sp, &head, 0))
return head;
free_list(head);
return NULL;
}
static struct imap_list *parse_list(char **sp)
{
return parse_imap_list(NULL, sp);
}
static void parse_capability(struct imap *imap, char *cmd)
{
char *arg;
unsigned i;
imap->caps = 0x80000000;
while ((arg = next_arg(&cmd)))
for (i = 0; i < ARRAY_SIZE(cap_list); i++)
if (!strcmp(cap_list[i], arg))
imap->caps |= 1 << i;
imap->rcaps = imap->caps;
}
static int parse_response_code(struct imap_store *ctx, struct imap_cmd_cb *cb,
char *s)
{
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");
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(struct imap_store *ctx, struct imap_cmd *tcmd)
{
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))
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, 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 {
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 = NULL;
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, NULL, "CREATE \"%.*s\"", (int)(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);
free(cmdp->cb.data);
free(cmdp->cmd);
free(cmdp);
if (!tcmd || tcmd == cmdp)
return resp;
}
}
/* not reached */
}
static void imap_close_server(struct imap_store *ictx)
{
struct imap *imap = ictx->imap;
if (imap->buf.sock.fd[0] != -1) {
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);
}
static void imap_close_store(struct store *ctx)
{
imap_close_server((struct imap_store *)ctx);
free_generic_messages(ctx->msgs);
free(ctx);
}
#ifndef NO_OPENSSL
/*
* hexchar() and cram() functions are based on the code from the isync
* project (http://isync.sf.net/).
*/
static char hexchar(unsigned int b)
{
return b < 10 ? '0' + b : 'a' + (b - 10);
}
#define ENCODED_SIZE(n) (4*((n+2)/3))
static char *cram(const char *challenge_64, const char *user, const char *pass)
{
int i, resp_len, encoded_len, decoded_len;
HMAC_CTX hmac;
unsigned char hash[16];
char hex[33];
char *response, *response_64, *challenge;
/*
* length of challenge_64 (i.e. base-64 encoded string) is a good
* enough upper bound for challenge (decoded result).
*/
encoded_len = strlen(challenge_64);
challenge = xmalloc(encoded_len);
decoded_len = EVP_DecodeBlock((unsigned char *)challenge,
(unsigned char *)challenge_64, encoded_len);
if (decoded_len < 0)
die("invalid challenge %s", challenge_64);
HMAC_Init(&hmac, (unsigned char *)pass, strlen(pass), EVP_md5());
HMAC_Update(&hmac, (unsigned char *)challenge, decoded_len);
HMAC_Final(&hmac, hash, NULL);
HMAC_CTX_cleanup(&hmac);
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);
}
/* response: "<user> <digest in hex>" */
resp_len = strlen(user) + 1 + strlen(hex) + 1;
response = xmalloc(resp_len);
sprintf(response, "%s %s", user, hex);
response_64 = xmalloc(ENCODED_SIZE(resp_len) + 1);
encoded_len = EVP_EncodeBlock((unsigned char *)response_64,
(unsigned char *)response, resp_len);
if (encoded_len < 0)
die("EVP_EncodeBlock error");
response_64[encoded_len] = '\0';
return (char *)response_64;
}
#else
static char *cram(const char *challenge_64, const char *user, const char *pass)
{
die("If you want to use CRAM-MD5 authenticate method, "
"you have to build git-imap-send with OpenSSL library.");
}
#endif
static int auth_cram_md5(struct imap_store *ctx, struct imap_cmd *cmd, const char *prompt)
{
int ret;
char *response;
response = cram(prompt, server.user, server.pass);
ret = socket_write(&ctx->imap->buf.sock, response, strlen(response));
if (ret != strlen(response))
return error("IMAP error: sending response failed");
free(response);
return 0;
}
static struct store *imap_open_store(struct imap_server_conf *srvc)
{
struct imap_store *ctx;
struct imap *imap;
char *arg, *rsp;
int s = -1, preauth;
ctx = xcalloc(sizeof(*ctx), 1);
ctx->imap = imap = xcalloc(sizeof(*imap), 1);
imap->buf.sock.fd[0] = imap->buf.sock.fd[1] = -1;
imap->in_progress_append = &imap->in_progress;
/* open connection to IMAP server */
if (srvc->tunnel) {
const char *argv[] = { srvc->tunnel, NULL };
Fix sparse warnings Fix warnings from 'make check'. - These files don't include 'builtin.h' causing sparse to complain that cmd_* isn't declared: builtin/clone.c:364, builtin/fetch-pack.c:797, builtin/fmt-merge-msg.c:34, builtin/hash-object.c:78, builtin/merge-index.c:69, builtin/merge-recursive.c:22 builtin/merge-tree.c:341, builtin/mktag.c:156, builtin/notes.c:426 builtin/notes.c:822, builtin/pack-redundant.c:596, builtin/pack-refs.c:10, builtin/patch-id.c:60, builtin/patch-id.c:149, builtin/remote.c:1512, builtin/remote-ext.c:240, builtin/remote-fd.c:53, builtin/reset.c:236, builtin/send-pack.c:384, builtin/unpack-file.c:25, builtin/var.c:75 - These files have symbols which should be marked static since they're only file scope: submodule.c:12, diff.c:631, replace_object.c:92, submodule.c:13, submodule.c:14, trace.c:78, transport.c:195, transport-helper.c:79, unpack-trees.c:19, url.c:3, url.c:18, url.c:104, url.c:117, url.c:123, url.c:129, url.c:136, thread-utils.c:21, thread-utils.c:48 - These files redeclare symbols to be different types: builtin/index-pack.c:210, parse-options.c:564, parse-options.c:571, usage.c:49, usage.c:58, usage.c:63, usage.c:72 - These files use a literal integer 0 when they really should use a NULL pointer: daemon.c:663, fast-import.c:2942, imap-send.c:1072, notes-merge.c:362 While we're in the area, clean up some unused #includes in builtin files (mostly exec_cmd.h). Signed-off-by: Stephen Boyd <bebarino@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-03-22 07:51:05 +00:00
struct child_process tunnel = {NULL};
imap_info("Starting tunnel '%s'... ", srvc->tunnel);
tunnel.argv = argv;
tunnel.use_shell = 1;
tunnel.in = -1;
tunnel.out = -1;
if (start_command(&tunnel))
die("cannot start proxy %s", argv[0]);
imap->buf.sock.fd[0] = tunnel.out;
imap->buf.sock.fd[1] = tunnel.in;
imap_info("ok\n");
} else {
#ifndef NO_IPV6
struct addrinfo hints, *ai0, *ai;
int gai;
char portstr[6];
snprintf(portstr, sizeof(portstr), "%d", srvc->port);
memset(&hints, 0, sizeof(hints));
hints.ai_socktype = SOCK_STREAM;
hints.ai_protocol = IPPROTO_TCP;
imap_info("Resolving %s... ", srvc->host);
gai = getaddrinfo(srvc->host, portstr, &hints, &ai);
if (gai) {
fprintf(stderr, "getaddrinfo: %s\n", gai_strerror(gai));
goto bail;
}
imap_info("ok\n");
for (ai0 = ai; ai; ai = ai->ai_next) {
char addr[NI_MAXHOST];
s = socket(ai->ai_family, ai->ai_socktype,
ai->ai_protocol);
if (s < 0)
continue;
getnameinfo(ai->ai_addr, ai->ai_addrlen, addr,
sizeof(addr), NULL, 0, NI_NUMERICHOST);
imap_info("Connecting to [%s]:%s... ", addr, portstr);
if (connect(s, ai->ai_addr, ai->ai_addrlen) < 0) {
close(s);
s = -1;
perror("connect");
continue;
}
break;
}
freeaddrinfo(ai0);
#else /* NO_IPV6 */
struct hostent *he;
struct sockaddr_in addr;
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);
if (!he) {
perror("gethostbyname");
goto bail;
}
imap_info("ok\n");
addr.sin_addr.s_addr = *((int *) he->h_addr_list[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);
s = -1;
perror("connect");
}
#endif
if (s < 0) {
fputs("Error: unable to connect to server.\n", stderr);
goto bail;
}
imap->buf.sock.fd[0] = s;
imap->buf.sock.fd[1] = dup(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");
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, NULL, rsp);
if (!imap->caps && imap_exec(ctx, NULL, "CAPABILITY") != RESP_OK)
goto bail;
if (!preauth) {
#ifndef NO_OPENSSL
if (!srvc->use_ssl && CAP(STARTTLS)) {
if (imap_exec(ctx, NULL, "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, NULL, "CAPABILITY") != RESP_OK)
goto bail;
}
#endif
imap_info("Logging in...\n");
if (!srvc->user) {
fprintf(stderr, "Skipping server %s, no user\n", srvc->host);
goto bail;
}
if (!srvc->pass) {
struct strbuf prompt = STRBUF_INIT;
strbuf_addf(&prompt, "Password (%s@%s): ", srvc->user, srvc->host);
arg = git_getpass(prompt.buf);
strbuf_release(&prompt);
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 = xstrdup(arg);
}
if (CAP(NOLOGIN)) {
fprintf(stderr, "Skipping account %s@%s, server forbids LOGIN\n", srvc->user, srvc->host);
goto bail;
}
if (srvc->auth_method) {
struct imap_cmd_cb cb;
if (!strcmp(srvc->auth_method, "CRAM-MD5")) {
if (!CAP(AUTH_CRAM_MD5)) {
fprintf(stderr, "You specified"
"CRAM-MD5 as authentication method, "
"but %s doesn't support it.\n", srvc->host);
goto bail;
}
/* CRAM-MD5 */
memset(&cb, 0, sizeof(cb));
cb.cont = auth_cram_md5;
if (imap_exec(ctx, &cb, "AUTHENTICATE CRAM-MD5") != RESP_OK) {
fprintf(stderr, "IMAP error: AUTHENTICATE CRAM-MD5 failed\n");
goto bail;
}
} else {
fprintf(stderr, "Unknown authentication method:%s\n", srvc->host);
goto bail;
}
} else {
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 (struct store *)ctx;
bail:
imap_close_store(&ctx->gen);
return NULL;
}
static int imap_make_flags(int flags, char *buf)
{
const char *s;
unsigned i, d;
for (i = d = 0; i < ARRAY_SIZE(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;
}
static void lf_to_crlf(struct msg_data *msg)
{
char *new;
int i, j, lfnum = 0;
if (msg->data[0] == '\n')
lfnum++;
for (i = 1; i < msg->len; i++) {
if (msg->data[i - 1] != '\r' && msg->data[i] == '\n')
lfnum++;
}
new = xmalloc(msg->len + lfnum);
if (msg->data[0] == '\n') {
new[0] = '\r';
new[1] = '\n';
i = 1;
j = 2;
} else {
new[0] = msg->data[0];
i = 1;
j = 1;
}
for ( ; i < msg->len; i++) {
if (msg->data[i] != '\n') {
new[j++] = msg->data[i];
continue;
}
if (msg->data[i - 1] != '\r')
new[j++] = '\r';
/* otherwise it already had CR before */
new[j++] = '\n';
}
msg->len += lfnum;
free(msg->data);
msg->data = new;
}
static int imap_store_msg(struct store *gctx, struct msg_data *data)
{
struct imap_store *ctx = (struct imap_store *)gctx;
struct imap *imap = ctx->imap;
struct imap_cmd_cb cb;
const char *prefix, *box;
int ret, d;
char flagstr[128];
lf_to_crlf(data);
memset(&cb, 0, sizeof(cb));
cb.dlen = data->len;
cb.data = xmalloc(cb.dlen);
memcpy(cb.data, data->data, data->len);
d = 0;
if (data->flags) {
d = imap_make_flags(data->flags, flagstr);
flagstr[d++] = ' ';
}
flagstr[d] = 0;
box = gctx->name;
prefix = !strcmp(box, "INBOX") ? "" : ctx->prefix;
cb.create = 0;
ret = imap_exec_m(ctx, &cb, "APPEND \"%s%s\" %s", prefix, box, flagstr);
imap->caps = imap->rcaps;
if (ret != DRV_OK)
return ret;
gctx->count++;
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, struct msg_data *msg)
{
struct strbuf buf = STRBUF_INIT;
memset(msg, 0, sizeof(*msg));
do {
if (strbuf_fread(&buf, CHUNKSIZE, f) <= 0)
break;
} while (!feof(f));
msg->len = buf.len;
msg->data = strbuf_detach(&buf, NULL);
return msg->len;
}
static int count_messages(struct msg_data *msg)
{
int count = 0;
char *p = msg->data;
while (1) {
if (!prefixcmp(p, "From ")) {
p = strstr(p+5, "\nFrom: ");
if (!p) break;
p = strstr(p+7, "\nDate: ");
if (!p) break;
p = strstr(p+7, "\nSubject: ");
if (!p) break;
p += 10;
count++;
}
p = strstr(p+5, "\nFrom ");
if (!p)
break;
p++;
}
return count;
}
static int split_msg(struct msg_data *all_msgs, struct msg_data *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 || prefixcmp(data, "From "))
return 0;
p = strchr(data, '\n');
if (p) {
p = &p[1];
msg->len -= p-data;
*ofs += p-data;
data = p;
}
p = strstr(data, "\nFrom ");
if (p)
msg->len = &p[1] - data;
msg->data = xmemdupz(data, msg->len);
*ofs += msg->len;
return 1;
}
static char *imap_folder;
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))
return 0;
key += sizeof imap_key - 1;
/* check booleans first, and barf on others */
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);
else if (!val)
return config_error_nonbool(key);
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);
else if (!strcmp("authmethod", key))
server.auth_method = xstrdup(val);
return 0;
}
int main(int argc, char **argv)
{
struct msg_data all_msgs, msg;
struct store *ctx = NULL;
int ofs = 0;
int r;
int total, n = 0;
int nongit_ok;
git_extract_argv0_path(argv[0]);
i18n: add infrastructure for translating Git with gettext Change the skeleton implementation of i18n in Git to one that can show localized strings to users for our C, Shell and Perl programs using either GNU libintl or the Solaris gettext implementation. This new internationalization support is enabled by default. If gettext isn't available, or if Git is compiled with NO_GETTEXT=YesPlease, Git falls back on its current behavior of showing interface messages in English. When using the autoconf script we'll auto-detect if the gettext libraries are installed and act appropriately. This change is somewhat large because as well as adding a C, Shell and Perl i18n interface we're adding a lot of tests for them, and for those tests to work we need a skeleton PO file to actually test translations. A minimal Icelandic translation is included for this purpose. Icelandic includes multi-byte characters which makes it easy to test various edge cases, and it's a language I happen to understand. The rest of the commit message goes into detail about various sub-parts of this commit. = Installation Gettext .mo files will be installed and looked for in the standard $(prefix)/share/locale path. GIT_TEXTDOMAINDIR can also be set to override that, but that's only intended to be used to test Git itself. = Perl Perl code that's to be localized should use the new Git::I18n module. It imports a __ function into the caller's package by default. Instead of using the high level Locale::TextDomain interface I've opted to use the low-level (equivalent to the C interface) Locale::Messages module, which Locale::TextDomain itself uses. Locale::TextDomain does a lot of redundant work we don't need, and some of it would potentially introduce bugs. It tries to set the $TEXTDOMAIN based on package of the caller, and has its own hardcoded paths where it'll search for messages. I found it easier just to completely avoid it rather than try to circumvent its behavior. In any case, this is an issue wholly internal Git::I18N. Its guts can be changed later if that's deemed necessary. See <AANLkTilYD_NyIZMyj9dHtVk-ylVBfvyxpCC7982LWnVd@mail.gmail.com> for a further elaboration on this topic. = Shell Shell code that's to be localized should use the git-sh-i18n library. It's basically just a wrapper for the system's gettext.sh. If gettext.sh isn't available we'll fall back on gettext(1) if it's available. The latter is available without the former on Solaris, which has its own non-GNU gettext implementation. We also need to emulate eval_gettext() there. If neither are present we'll use a dumb printf(1) fall-through wrapper. = About libcharset.h and langinfo.h We use libcharset to query the character set of the current locale if it's available. I.e. we'll use it instead of nl_langinfo if HAVE_LIBCHARSET_H is set. The GNU gettext manual recommends using langinfo.h's nl_langinfo(CODESET) to acquire the current character set, but on systems that have libcharset.h's locale_charset() using the latter is either saner, or the only option on those systems. GNU and Solaris have a nl_langinfo(CODESET), FreeBSD can use either, but MinGW and some others need to use libcharset.h's locale_charset() instead. =Credits This patch is based on work by Jeff Epler <jepler@unpythonic.net> who did the initial Makefile / C work, and a lot of comments from the Git mailing list, including Jonathan Nieder, Jakub Narebski, Johannes Sixt, Erik Faye-Lund, Peter Krefting, Junio C Hamano, Thomas Rast and others. [jc: squashed a small Makefile fix from Ramsay] Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-11-17 23:14:42 +00:00
git_setup_gettext();
if (argc != 1)
usage(imap_send_usage);
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");
return 1;
}
if (!server.host) {
if (!server.tunnel) {
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");
return 1;
}
total = count_messages(&all_msgs);
if (!total) {
fprintf(stderr, "no messages 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;
}
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))
break;
if (server.use_html)
wrap_in_html(&msg);
r = imap_store_msg(ctx, &msg);
if (r != DRV_OK)
break;
n++;
}
fprintf(stderr, "\n");
imap_close_store(ctx);
return 0;
}