Imported Upstream version 2.12.5
[platform/upstream/git.git] / imap-send.c
index 0bc6f7f..5c7e27a 100644 (file)
  */
 
 #include "cache.h"
+#include "credential.h"
 #include "exec_cmd.h"
 #include "run-command.h"
-#include "prompt.h"
+#include "parse-options.h"
 #ifdef NO_OPENSSL
 typedef void *SSL;
 #endif
+#ifdef USE_CURL_FOR_IMAP_SEND
+#include "http.h"
+#endif
+
+#if defined(USE_CURL_FOR_IMAP_SEND) && defined(NO_OPENSSL)
+/* only available option */
+#define USE_CURL_DEFAULT 1
+#else
+/* strictly opt in */
+#define USE_CURL_DEFAULT 0
+#endif
+
+static int verbosity;
+static int use_curl = USE_CURL_DEFAULT;
 
-static const char imap_send_usage[] = "git imap-send < <mbox>";
+static const char * const imap_send_usage[] = { "git imap-send [-v] [-q] [--[no-]curl] < <mbox>", NULL };
+
+static struct option imap_send_options[] = {
+       OPT__VERBOSITY(&verbosity),
+       OPT_BOOL(0, "curl", &use_curl, "use libcurl to communicate with the IMAP server"),
+       OPT_END()
+};
 
 #undef DRV_OK
 #define DRV_OK          0
@@ -38,8 +59,6 @@ static const char imap_send_usage[] = "git imap-send < <mbox>";
 #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)))
@@ -69,6 +88,7 @@ struct imap_server_conf {
        char *tunnel;
        char *host;
        int port;
+       char *folder;
        char *user;
        char *pass;
        int use_ssl;
@@ -82,6 +102,7 @@ static struct imap_server_conf server = {
        NULL,   /* tunnel */
        NULL,   /* host */
        0,      /* port */
+       NULL,   /* folder */
        NULL,   /* user */
        NULL,   /* pass */
        0,      /* use_ssl */
@@ -128,7 +149,6 @@ struct imap_cmd_cb {
        char *data;
        int dlen;
        int uid;
-       unsigned create:1, trycreate:1;
 };
 
 struct imap_cmd {
@@ -267,17 +287,20 @@ static int ssl_socket_connect(struct imap_socket *sock, int use_tls_only, int ve
        SSL_library_init();
        SSL_load_error_strings();
 
-       if (use_tls_only)
-               meth = TLSv1_method();
-       else
-               meth = SSLv23_method();
-
+       meth = SSLv23_method();
        if (!meth) {
                ssl_socket_perror("SSLv23_method");
                return -1;
        }
 
        ctx = SSL_CTX_new(meth);
+       if (!ctx) {
+               ssl_socket_perror("SSL_CTX_new");
+               return -1;
+       }
+
+       if (use_tls_only)
+               SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3);
 
        if (verify)
                SSL_CTX_set_verify(ctx, SSL_VERIFY_PEER, NULL);
@@ -417,7 +440,7 @@ static int buffer_gets(struct imap_buffer *b, char **s)
                        if (b->buf[b->offset + 1] == '\n') {
                                b->buf[b->offset] = 0;  /* terminate the string */
                                b->offset += 2; /* next line */
-                               if (Verbose)
+                               if (0 < verbosity)
                                        puts(*s);
                                return 0;
                        }
@@ -432,7 +455,7 @@ static void imap_info(const char *msg, ...)
 {
        va_list va;
 
-       if (!Quiet) {
+       if (0 <= verbosity) {
                va_start(va, msg);
                vprintf(msg, va);
                va_end(va);
@@ -444,7 +467,7 @@ static void imap_warn(const char *msg, ...)
 {
        va_list va;
 
-       if (Quiet < 2) {
+       if (-2 < verbosity) {
                va_start(va, msg);
                vfprintf(stderr, msg, va);
                va_end(va);
@@ -488,14 +511,14 @@ static int nfsnprintf(char *buf, int blen, const char *fmt, ...)
 
        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.");
+               die("BUG: 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)
+static struct imap_cmd *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;
@@ -521,10 +544,10 @@ static struct imap_cmd *v_issue_imap_cmd(struct imap_store *ctx,
                                  cmd->tag, cmd->cmd, cmd->cb.dlen,
                                  CAP(LITERALPLUS) ? "+" : "");
 
-       if (Verbose) {
+       if (0 < verbosity) {
                if (imap->num_in_progress)
                        printf("(%d in progress) ", imap->num_in_progress);
-               if (memcmp(cmd->cmd, "LOGIN", 5))
+               if (!starts_with(cmd->cmd, "LOGIN"))
                        printf(">>> %s", buf);
                else
                        printf(">>> %d LOGIN <user> <pass>\n", cmd->tag);
@@ -559,20 +582,6 @@ static struct imap_cmd *v_issue_imap_cmd(struct imap_store *ctx,
 }
 
 __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, ...)
 {
@@ -580,7 +589,7 @@ static int imap_exec(struct imap_store *ctx, struct imap_cmd_cb *cb,
        struct imap_cmd *cmdp;
 
        va_start(ap, fmt);
-       cmdp = v_issue_imap_cmd(ctx, cb, fmt, ap);
+       cmdp = issue_imap_cmd(ctx, cb, fmt, ap);
        va_end(ap);
        if (!cmdp)
                return RESP_BAD;
@@ -596,7 +605,7 @@ static int imap_exec_m(struct imap_store *ctx, struct imap_cmd_cb *cb,
        struct imap_cmd *cmdp;
 
        va_start(ap, fmt);
-       cmdp = v_issue_imap_cmd(ctx, cb, fmt, ap);
+       cmdp = issue_imap_cmd(ctx, cb, fmt, ap);
        va_end(ap);
        if (!cmdp)
                return DRV_STORE_BAD;
@@ -714,8 +723,8 @@ static int parse_response_code(struct imap_store *ctx, struct imap_cmd_cb *cb,
 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;
+       struct imap_cmd *cmdp, **pcmdp;
+       char *cmd, *arg, *arg1;
        int n, resp, resp2, tag;
 
        for (;;) {
@@ -801,39 +810,17 @@ static int get_cmd_result(struct imap_store *ctx, struct imap_cmd *tcmd)
                        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;
-                                       }
+                               if (!strcmp("NO", arg))
                                        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) ?
+                                       !starts_with(cmdp->cmd, "LOGIN") ?
                                                        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);
@@ -878,7 +865,6 @@ static char hexchar(unsigned int b)
 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;
@@ -893,10 +879,8 @@ static char *cram(const char *challenge_64, const char *user, const char *pass)
                                      (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);
+       if (!HMAC(EVP_md5(), pass, strlen(pass), (unsigned char *)challenge, decoded_len, hash, NULL))
+               die("HMAC error");
 
        hex[32] = 0;
        for (i = 0; i < 16; i++) {
@@ -905,16 +889,14 @@ static char *cram(const char *challenge_64, const char *user, const char *pass)
        }
 
        /* response: "<user> <digest in hex>" */
-       resp_len = strlen(user) + 1 + strlen(hex) + 1;
-       response = xmalloc(resp_len);
-       sprintf(response, "%s %s", user, hex);
+       response = xstrfmt("%s %s", user, hex);
+       resp_len = strlen(response);
 
-       response_64 = xmalloc(ENCODED_SIZE(resp_len) + 1);
+       response_64 = xmallocz(ENCODED_SIZE(resp_len));
        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;
 }
 
@@ -944,33 +926,33 @@ static int auth_cram_md5(struct imap_store *ctx, struct imap_cmd *cmd, const cha
        return 0;
 }
 
-static struct imap_store *imap_open_store(struct imap_server_conf *srvc)
+static struct imap_store *imap_open_store(struct imap_server_conf *srvc, char *folder)
 {
+       struct credential cred = CREDENTIAL_INIT;
        struct imap_store *ctx;
        struct imap *imap;
        char *arg, *rsp;
        int s = -1, preauth;
 
-       ctx = xcalloc(sizeof(*ctx), 1);
+       ctx = xcalloc(1, sizeof(*ctx));
 
-       ctx->imap = imap = xcalloc(sizeof(*imap), 1);
+       ctx->imap = imap = xcalloc(1, sizeof(*imap));
        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 };
-               struct child_process tunnel = {NULL};
+               struct child_process tunnel = CHILD_PROCESS_INIT;
 
                imap_info("Starting tunnel '%s'... ", srvc->tunnel);
 
-               tunnel.argv = argv;
+               argv_array_push(&tunnel.args, srvc->tunnel);
                tunnel.use_shell = 1;
                tunnel.in = -1;
                tunnel.out = -1;
                if (start_command(&tunnel))
-                       die("cannot start proxy %s", argv[0]);
+                       die("cannot start proxy %s", srvc->tunnel);
 
                imap->buf.sock.fd[0] = tunnel.out;
                imap->buf.sock.fd[1] = tunnel.in;
@@ -1096,28 +1078,19 @@ static struct imap_store *imap_open_store(struct imap_server_conf *srvc)
                }
 #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->user || !srvc->pass) {
+                       cred.protocol = xstrdup(srvc->use_ssl ? "imaps" : "imap");
+                       cred.host = xstrdup(srvc->host);
+
+                       cred.username = xstrdup_or_null(srvc->user);
+                       cred.password = xstrdup_or_null(srvc->pass);
+
+                       credential_fill(&cred);
+
+                       if (!srvc->user)
+                               srvc->user = xstrdup(cred.username);
+                       if (!srvc->pass)
+                               srvc->pass = xstrdup(cred.password);
                }
 
                if (srvc->auth_method) {
@@ -1143,6 +1116,11 @@ static struct imap_store *imap_open_store(struct imap_server_conf *srvc)
                                goto bail;
                        }
                } else {
+                       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");
@@ -1153,10 +1131,38 @@ static struct imap_store *imap_open_store(struct imap_server_conf *srvc)
                }
        } /* !preauth */
 
+       if (cred.username)
+               credential_approve(&cred);
+       credential_clear(&cred);
+
+       /* check the target mailbox exists */
+       ctx->name = folder;
+       switch (imap_exec(ctx, NULL, "EXAMINE \"%s\"", ctx->name)) {
+       case RESP_OK:
+               /* ok */
+               break;
+       case RESP_BAD:
+               fprintf(stderr, "IMAP error: could not check mailbox\n");
+               goto out;
+       case RESP_NO:
+               if (imap_exec(ctx, NULL, "CREATE \"%s\"", ctx->name) == RESP_OK) {
+                       imap_info("Created missing mailbox\n");
+               } else {
+                       fprintf(stderr, "IMAP error: could not create missing mailbox\n");
+                       goto out;
+               }
+               break;
+       }
+
        ctx->prefix = "";
        return ctx;
 
 bail:
+       if (cred.username)
+               credential_reject(&cred);
+       credential_clear(&cred);
+
+ out:
        imap_close_store(ctx);
        return NULL;
 }
@@ -1179,7 +1185,7 @@ static void lf_to_crlf(struct strbuf *msg)
                j++;
        }
 
-       new = xmalloc(j + 1);
+       new = xmallocz(j);
 
        /*
         * Second pass: write the new string.  Note that this loop is
@@ -1212,7 +1218,6 @@ static int imap_store_msg(struct imap_store *ctx, struct strbuf *msg)
 
        box = ctx->name;
        prefix = !strcmp(box, "INBOX") ? "" : ctx->prefix;
-       cb.create = 0;
        ret = imap_exec_m(ctx, &cb, "APPEND \"%s%s\" ", prefix, box);
        imap->caps = imap->rcaps;
        if (ret != DRV_OK)
@@ -1317,75 +1322,208 @@ static int split_msg(struct strbuf *all_msgs, struct strbuf *msg, int *ofs)
        return 1;
 }
 
-static char *imap_folder;
-
-static int git_imap_config(const char *key, const char *val, void *cb)
+static void git_imap_config(void)
 {
-       char imap_key[] = "imap.";
+       const char *val = NULL;
 
-       if (strncmp(key, imap_key, sizeof imap_key - 1))
-               return 0;
+       git_config_get_bool("imap.sslverify", &server.ssl_verify);
+       git_config_get_bool("imap.preformattedhtml", &server.use_html);
+       git_config_get_string("imap.folder", &server.folder);
 
-       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 (starts_with(val, "imap:"))
-                       val += 5;
-               else if (starts_with(val, "imaps:")) {
-                       val += 6;
-                       server.use_ssl = 1;
+       if (!git_config_get_value("imap.host", &val)) {
+               if (!val) {
+                       git_die_config("imap.host", "Missing value for 'imap.host'");
+               } else {
+                       if (starts_with(val, "imap:"))
+                               val += 5;
+                       else if (starts_with(val, "imaps:")) {
+                               val += 6;
+                               server.use_ssl = 1;
+                       }
+                       if (starts_with(val, "//"))
+                               val += 2;
+                       server.host = xstrdup(val);
                }
-               if (starts_with(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;
+       git_config_get_string("imap.user", &server.user);
+       git_config_get_string("imap.pass", &server.pass);
+       git_config_get_int("imap.port", &server.port);
+       git_config_get_string("imap.tunnel", &server.tunnel);
+       git_config_get_string("imap.authmethod", &server.auth_method);
 }
 
-int main(int argc, char **argv)
+static int append_msgs_to_imap(struct imap_server_conf *server,
+                              struct strbuf* all_msgs, int total)
 {
-       struct strbuf all_msgs = STRBUF_INIT;
        struct strbuf msg = STRBUF_INIT;
        struct imap_store *ctx = NULL;
        int ofs = 0;
        int r;
-       int total, n = 0;
-       int nongit_ok;
+       int n = 0;
 
-       git_extract_argv0_path(argv[0]);
+       ctx = imap_open_store(server, server->folder);
+       if (!ctx) {
+               fprintf(stderr, "failed to open store\n");
+               return 1;
+       }
+       ctx->name = server->folder;
 
-       git_setup_gettext();
+       fprintf(stderr, "sending %d message%s\n", total, (total != 1) ? "s" : "");
+       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");
 
-       if (argc != 1)
-               usage(imap_send_usage);
+       imap_close_store(ctx);
+
+       return 0;
+}
+
+#ifdef USE_CURL_FOR_IMAP_SEND
+static CURL *setup_curl(struct imap_server_conf *srvc)
+{
+       CURL *curl;
+       struct strbuf path = STRBUF_INIT;
+
+       if (curl_global_init(CURL_GLOBAL_ALL) != CURLE_OK)
+               die("curl_global_init failed");
+
+       curl = curl_easy_init();
+
+       if (!curl)
+               die("curl_easy_init failed");
+
+       curl_easy_setopt(curl, CURLOPT_USERNAME, server.user);
+       curl_easy_setopt(curl, CURLOPT_PASSWORD, server.pass);
+
+       strbuf_addstr(&path, server.use_ssl ? "imaps://" : "imap://");
+       strbuf_addstr(&path, server.host);
+       if (!path.len || path.buf[path.len - 1] != '/')
+               strbuf_addch(&path, '/');
+       strbuf_addstr(&path, server.folder);
+
+       curl_easy_setopt(curl, CURLOPT_URL, path.buf);
+       strbuf_release(&path);
+       curl_easy_setopt(curl, CURLOPT_PORT, server.port);
+
+       if (server.auth_method) {
+#if LIBCURL_VERSION_NUM < 0x072200
+               warning("No LOGIN_OPTIONS support in this cURL version");
+#else
+               struct strbuf auth = STRBUF_INIT;
+               strbuf_addstr(&auth, "AUTH=");
+               strbuf_addstr(&auth, server.auth_method);
+               curl_easy_setopt(curl, CURLOPT_LOGIN_OPTIONS, auth.buf);
+               strbuf_release(&auth);
+#endif
+       }
+
+       if (!server.use_ssl)
+               curl_easy_setopt(curl, CURLOPT_USE_SSL, (long)CURLUSESSL_TRY);
+
+       curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, server.ssl_verify);
+       curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, server.ssl_verify);
+
+       curl_easy_setopt(curl, CURLOPT_READFUNCTION, fread_buffer);
+
+       curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);
+
+       if (0 < verbosity || getenv("GIT_CURL_VERBOSE"))
+               curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
+       setup_curl_trace(curl);
+
+       return curl;
+}
+
+static int curl_append_msgs_to_imap(struct imap_server_conf *server,
+                                   struct strbuf* all_msgs, int total) {
+       int ofs = 0;
+       int n = 0;
+       struct buffer msgbuf = { STRBUF_INIT, 0 };
+       CURL *curl;
+       CURLcode res = CURLE_OK;
+
+       curl = setup_curl(server);
+       curl_easy_setopt(curl, CURLOPT_READDATA, &msgbuf);
+
+       fprintf(stderr, "sending %d message%s\n", total, (total != 1) ? "s" : "");
+       while (1) {
+               unsigned percent = n * 100 / total;
+               int prev_len;
+
+               fprintf(stderr, "%4u%% (%d/%d) done\r", percent, n, total);
+
+               prev_len = msgbuf.buf.len;
+               if (!split_msg(all_msgs, &msgbuf.buf, &ofs))
+                       break;
+               if (server->use_html)
+                       wrap_in_html(&msgbuf.buf);
+               lf_to_crlf(&msgbuf.buf);
+
+               curl_easy_setopt(curl, CURLOPT_INFILESIZE_LARGE,
+                                (curl_off_t)(msgbuf.buf.len-prev_len));
+
+               res = curl_easy_perform(curl);
+
+               if(res != CURLE_OK) {
+                       fprintf(stderr, "curl_easy_perform() failed: %s\n",
+                                       curl_easy_strerror(res));
+                       break;
+               }
+
+               n++;
+       }
+       fprintf(stderr, "\n");
+
+       curl_easy_cleanup(curl);
+       curl_global_cleanup();
+
+       return 0;
+}
+#endif
+
+int cmd_main(int argc, const char **argv)
+{
+       struct strbuf all_msgs = STRBUF_INIT;
+       int total;
+       int nongit_ok;
 
        setup_git_directory_gently(&nongit_ok);
-       git_config(git_imap_config, NULL);
+       git_imap_config();
+
+       argc = parse_options(argc, (const char **)argv, "", imap_send_options, imap_send_usage, 0);
+
+       if (argc)
+               usage_with_options(imap_send_usage, imap_send_options);
+
+#ifndef USE_CURL_FOR_IMAP_SEND
+       if (use_curl) {
+               warning("--curl not supported in this build");
+               use_curl = 0;
+       }
+#elif defined(NO_OPENSSL)
+       if (!use_curl) {
+               warning("--no-curl not supported in this build");
+               use_curl = 1;
+       }
+#endif
 
        if (!server.port)
                server.port = server.use_ssl ? 993 : 143;
 
-       if (!imap_folder) {
+       if (!server.folder) {
                fprintf(stderr, "no imap store specified\n");
                return 1;
        }
@@ -1415,30 +1553,14 @@ int main(int argc, char **argv)
        }
 
        /* 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");
+       if (server.tunnel)
+               return append_msgs_to_imap(&server, &all_msgs, total);
 
-       imap_close_store(ctx);
+#ifdef USE_CURL_FOR_IMAP_SEND
+       if (use_curl)
+               return curl_append_msgs_to_imap(&server, &all_msgs, total);
+#endif
 
-       return 0;
+       return append_msgs_to_imap(&server, &all_msgs, total);
 }