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-rw-r--r--imap-send.c1449
1 files changed, 1449 insertions, 0 deletions
diff --git a/imap-send.c b/imap-send.c
new file mode 100644
index 000000000..3703dbd1a
--- /dev/null
+++ b/imap-send.c
@@ -0,0 +1,1449 @@
+/*
+ * 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"
+#ifdef NO_OPENSSL
+typedef void *SSL;
+#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;
+};
+
+struct string_list {
+ struct string_list *next;
+ char string[1];
+};
+
+struct channel_conf {
+ struct channel_conf *next;
+ char *name;
+ struct store_conf *master, *slave;
+ char *master_name, *slave_name;
+ char *sync_state;
+ struct string_list *patterns;
+ int mops, sops;
+ unsigned max_messages; /* for slave only */
+};
+
+struct group_conf {
+ struct group_conf *next;
+ char *name;
+ 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 */
+
+struct message {
+ struct message *next;
+ /* struct string_list *keywords; */
+ 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;
+ unsigned int crlf:1;
+};
+
+#define DRV_OK 0
+#define DRV_MSG_BAD -1
+#define DRV_BOX_BAD -2
+#define DRV_STORE_BAD -3
+
+static int Verbose, Quiet;
+
+static void imap_info(const char *, ...);
+static void imap_warn(const char *, ...);
+
+static char *next_arg(char **);
+
+static void free_generic_messages(struct message *);
+
+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\n");
+ if (len >= sizeof(tmp))
+ die("imap command overflow !\n");
+ *strp = xmemdupz(tmp, len);
+ return len;
+}
+
+static void arc4_init(void);
+static unsigned char arc4_getbyte(void);
+
+struct imap_server_conf {
+ char *name;
+ char *tunnel;
+ char *host;
+ int port;
+ char *user;
+ char *pass;
+ int use_ssl;
+ int ssl_verify;
+};
+
+struct imap_store_conf {
+ struct store_conf gen;
+ struct imap_server_conf *server;
+ unsigned use_namespace:1;
+};
+
+#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;
+ 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,
+};
+
+static const char *cap_list[] = {
+ "LOGINDISABLED",
+ "UIDPLUS",
+ "LITERAL+",
+ "NAMESPACE",
+ "STARTTLS",
+};
+
+#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(), 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)
+{
+#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
+ 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(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, buf, len);
+ if (n <= 0) {
+ socket_perror("read", sock, n);
+ close(sock->fd);
+ sock->fd = -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, buf, len);
+ if (n != len) {
+ 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(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.\n");
+ va_end(va);
+ return ret;
+}
+
+static struct {
+ unsigned char i, j, s[256];
+} rs;
+
+static void arc4_init(void)
+{
+ int i, fd;
+ unsigned char j, si, dat[128];
+
+ if ((fd = open("/dev/urandom", O_RDONLY)) < 0 && (fd = open("/dev/random", O_RDONLY)) < 0) {
+ fprintf(stderr, "Fatal: no random number source available.\n");
+ exit(3);
+ }
+ if (read_in_full(fd, dat, 128) != 128) {
+ fprintf(stderr, "Fatal: cannot read random number source.\n");
+ exit(3);
+ }
+ close(fd);
+
+ for (i = 0; i < 256; i++)
+ rs.s[i] = i;
+ for (i = j = 0; i < 256; i++) {
+ si = rs.s[i];
+ j += si + dat[i & 127];
+ rs.s[i] = rs.s[j];
+ rs.s[j] = si;
+ }
+ rs.i = rs.j = 0;
+
+ for (i = 0; i < 256; i++)
+ arc4_getbyte();
+}
+
+static unsigned char arc4_getbyte(void)
+{
+ unsigned char si, sj;
+
+ rs.i++;
+ si = rs.s[rs.i];
+ rs.j += si;
+ sj = rs.s[rs.j];
+ rs.s[rs.i] = sj;
+ rs.s[rs.j] = si;
+ return rs.s[(si + sj) & 0xff];
+}
+
+static struct imap_cmd *v_issue_imap_cmd(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);
+
+ bufl = nfsnprintf(buf, sizeof(buf), cmd->cb.data ? CAP(LITERALPLUS) ?
+ "%d %s{%d+}\r\n" : "%d %s{%d}\r\n" : "%d %s\r\n",
+ cmd->tag, cmd->cmd, cmd->cb.dlen);
+ if (Verbose) {
+ if (imap->num_in_progress)
+ printf("(%d in progress) ", imap->num_in_progress);
+ if (memcmp(cmd->cmd, "LOGIN", 5))
+ printf(">>> %s", buf);
+ else
+ printf(">>> %d LOGIN <user> <pass>\n", cmd->tag);
+ }
+ if (socket_write(&imap->buf.sock, buf, bufl) != bufl) {
+ free(cmd->cmd);
+ free(cmd);
+ if (cb)
+ free(cb->data);
+ return NULL;
+ }
+ if (cmd->cb.data) {
+ if (CAP(LITERALPLUS)) {
+ n = socket_write(&imap->buf.sock, cmd->cb.data, cmd->cb.dlen);
+ free(cmd->cb.data);
+ if (n != cmd->cb.dlen ||
+ (n = socket_write(&imap->buf.sock, "\r\n", 2)) != 2) {
+ free(cmd->cmd);
+ free(cmd);
+ return NULL;
+ }
+ cmd->cb.data = 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;
+}
+
+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;
+}
+
+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);
+}
+
+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\"", 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 != -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);
+}
+
+static struct store *imap_open_store(struct imap_server_conf *srvc)
+{
+ 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->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);
+
+ if (socketpair(PF_UNIX, SOCK_STREAM, 0, a)) {
+ perror("socketpair");
+ exit(1);
+ }
+
+ pid = fork();
+ if (pid < 0)
+ _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);
+ }
+
+ close(a[0]);
+
+ imap->buf.sock.fd = a[1];
+
+ imap_info("ok\n");
+ } else {
+ 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);
+ perror("connect");
+ goto bail;
+ }
+
+ 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");
+ 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, 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);
+ goto bail;
+ }
+ if (!srvc->pass) {
+ char prompt[80];
+ sprintf(prompt, "Password (%s@%s): ", srvc->user, srvc->host);
+ arg = getpass(prompt);
+ if (!arg) {
+ perror("getpass");
+ exit(1);
+ }
+ if (!*arg) {
+ fprintf(stderr, "Skipping account %s@%s, no password\n", srvc->user, srvc->host);
+ goto bail;
+ }
+ /*
+ * getpass() returns a pointer to a static buffer. make a copy
+ * for long term storage.
+ */
+ srvc->pass = xstrdup(arg);
+ }
+ if (CAP(NOLOGIN)) {
+ fprintf(stderr, "Skipping account %s@%s, server forbids LOGIN\n", srvc->user, srvc->host);
+ goto bail;
+ }
+ 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;
+}
+
+#define TUIDL 8
+
+static int imap_store_msg(struct store *gctx, struct msg_data *data, int *uid)
+{
+ 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;
+ int ret, i, j, d, len, extra, nocr;
+ int start, sbreak = 0, ebreak = 0;
+ char flagstr[128], tuid[TUIDL * 2 + 1];
+
+ memset(&cb, 0, sizeof(cb));
+
+ fmap = data->data;
+ len = data->len;
+ nocr = !data->crlf;
+ extra = 0, i = 0;
+ if (!CAP(UIDPLUS) && uid) {
+ nloop:
+ start = i;
+ while (i < len)
+ if (fmap[i++] == '\n') {
+ extra += nocr;
+ if (i - 2 + nocr == start) {
+ sbreak = ebreak = i - 2 + nocr;
+ goto mktid;
+ }
+ if (!memcmp(fmap + start, "X-TUID: ", 8)) {
+ extra -= (ebreak = i) - (sbreak = start) + nocr;
+ goto mktid;
+ }
+ goto nloop;
+ }
+ /* invalid message */
+ free(fmap);
+ return DRV_MSG_BAD;
+ mktid:
+ for (j = 0; j < TUIDL; j++)
+ sprintf(tuid + j * 2, "%02x", arc4_getbyte());
+ extra += 8 + TUIDL * 2 + 2;
+ }
+ if (nocr)
+ for (; i < len; i++)
+ if (fmap[i] == '\n')
+ extra++;
+
+ cb.dlen = len + extra;
+ buf = cb.data = xmalloc(cb.dlen);
+ i = 0;
+ if (!CAP(UIDPLUS) && uid) {
+ if (nocr) {
+ for (; i < sbreak; i++)
+ if (fmap[i] == '\n') {
+ *buf++ = '\r';
+ *buf++ = '\n';
+ } else
+ *buf++ = fmap[i];
+ } else {
+ memcpy(buf, fmap, sbreak);
+ buf += sbreak;
+ }
+ memcpy(buf, "X-TUID: ", 8);
+ buf += 8;
+ memcpy(buf, tuid, TUIDL * 2);
+ buf += TUIDL * 2;
+ *buf++ = '\r';
+ *buf++ = '\n';
+ i = ebreak;
+ }
+ if (nocr) {
+ for (; i < len; i++)
+ if (fmap[i] == '\n') {
+ *buf++ = '\r';
+ *buf++ = '\n';
+ } else
+ *buf++ = fmap[i];
+ } else
+ memcpy(buf, fmap + i, len - i);
+
+ free(fmap);
+
+ d = 0;
+ if (data->flags) {
+ d = imap_make_flags(data->flags, flagstr);
+ flagstr[d++] = ' ';
+ }
+ flagstr[d] = 0;
+
+ if (!uid) {
+ box = gctx->conf->trash;
+ prefix = ctx->prefix;
+ cb.create = 1;
+ if (ctx->trashnc)
+ imap->caps = imap->rcaps & ~(1 << LITERALPLUS);
+ } else {
+ box = gctx->name;
+ prefix = !strcmp(box, "INBOX") ? "" : ctx->prefix;
+ cb.create = 0;
+ }
+ cb.ctx = uid;
+ ret = imap_exec_m(ctx, &cb, "APPEND \"%s%s\" %s", prefix, box, flagstr);
+ imap->caps = imap->rcaps;
+ if (ret != DRV_OK)
+ return ret;
+ if (!uid)
+ ctx->trashnc = 0;
+ else
+ gctx->count++;
+
+ return DRV_OK;
+}
+
+#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 ")) {
+ count++;
+ p += 5;
+ }
+ 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 struct imap_server_conf server = {
+ NULL, /* name */
+ NULL, /* tunnel */
+ NULL, /* host */
+ 0, /* port */
+ NULL, /* user */
+ NULL, /* pass */
+ 0, /* use_ssl */
+ 1, /* ssl_verify */
+};
+
+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;
+
+ if (!val)
+ return config_error_nonbool(key);
+
+ key += sizeof imap_key - 1;
+
+ 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("sslverify", key))
+ server.ssl_verify = git_config_bool(key, val);
+ return 0;
+}
+
+int main(int argc, char **argv)
+{
+ 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;
+
+ /* init the random number generator */
+ arc4_init();
+
+ 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;
+ r = imap_store_msg(ctx, &msg, &uid);
+ if (r != DRV_OK)
+ break;
+ n++;
+ }
+ fprintf(stderr, "\n");
+
+ imap_close_store(ctx);
+
+ return 0;
+}
generated by cgit v1.2.1 (git 2.18.0) at 2024-12-28 05:01:27 +0000