Report all socket connection errors if we fail.
[rsync.git] / main.c
diff --git a/main.c b/main.c
index 8ca164bddae65f3037cb7aa9dc4cde12811f5c13..85e38f386613a06fa1f325e8846fcec0b8c94a99 100644 (file)
--- a/main.c
+++ b/main.c
@@ -4,7 +4,7 @@
  * Copyright (C) 1996-2001 Andrew Tridgell <tridge@samba.org>
  * Copyright (C) 1996 Paul Mackerras
  * Copyright (C) 2001, 2002 Martin Pool <mbp@samba.org>
- * Copyright (C) 2003-2007 Wayne Davison
+ * Copyright (C) 2003-2009 Wayne Davison
  *
  * 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
@@ -33,7 +33,6 @@ extern int list_only;
 extern int am_root;
 extern int am_server;
 extern int am_sender;
-extern int am_generator;
 extern int am_daemon;
 extern int inc_recurse;
 extern int blocking_io;
@@ -45,6 +44,7 @@ extern int got_xfer_error;
 extern int module_id;
 extern int copy_links;
 extern int copy_dirlinks;
+extern int copy_unsafe_links;
 extern int keep_dirlinks;
 extern int preserve_hard_links;
 extern int protocol_version;
@@ -65,21 +65,23 @@ extern int batch_fd;
 extern int filesfrom_fd;
 extern int connect_timeout;
 extern pid_t cleanup_child_pid;
+extern unsigned int module_dirlen;
 extern struct stats stats;
 extern char *filesfrom_host;
 extern char *partial_dir;
-extern char *basis_dir[];
+extern char *dest_option;
+extern char *basis_dir[MAX_BASIS_DIRS+1];
 extern char *rsync_path;
 extern char *shell_cmd;
 extern char *batch_name;
 extern char *password_file;
 extern char curr_dir[MAXPATHLEN];
 extern struct file_list *first_flist;
-extern struct filter_list_struct server_filter_list;
-#ifdef ICONV_OPTION
-extern iconv_t ic_send;
-#endif
+extern struct filter_list_struct daemon_filter_list;
 
+uid_t our_uid;
+int am_receiver = 0;  /* Only set to 1 after the receiver/generator fork. */
+int am_generator = 0; /* Only set to 1 after the receiver/generator fork. */
 int local_server = 0;
 int daemon_over_rsh = 0;
 mode_t orig_umask = 0;
@@ -276,7 +278,7 @@ static void output_summary(void)
                rprintf(FINFO, "total size is %s  speedup is %.2f%s\n",
                        human_num(stats.total_size),
                        (double)stats.total_size / (total_written+total_read),
-                       dry_run ? " (DRY RUN)" : "");
+                       write_batch < 0 ? " (BATCH ONLY)" : dry_run ? " (DRY RUN)" : "");
        }
 
        fflush(stdout);
@@ -330,8 +332,7 @@ static pid_t do_cmd(char *cmd, char *machine, char *user, char **remote_argv, in
 {
        int i, argc = 0;
        char *args[MAX_ARGS];
-       pid_t ret;
-       char *dir = NULL;
+       pid_t pid;
        int dash_l_set = 0;
 
        if (!read_batch && !local_server) {
@@ -341,7 +342,7 @@ static pid_t do_cmd(char *cmd, char *machine, char *user, char **remote_argv, in
                        cmd = rsh_env;
                if (!cmd)
                        cmd = RSYNC_RSH;
-               cmd = strdup(cmd);
+               cmd = strdup(cmd); /* MEMORY LEAK */
                if (!cmd)
                        goto oom;
 
@@ -427,7 +428,11 @@ static pid_t do_cmd(char *cmd, char *machine, char *user, char **remote_argv, in
                                rprintf(FERROR, "internal: args[] overflowed in do_cmd()\n");
                                exit_cleanup(RERR_SYNTAX);
                        }
-                       args[argc++] = *remote_argv++;
+                       if (**remote_argv == '-') {
+                               if (asprintf(args + argc++, "./%s", *remote_argv++) < 0)
+                                       out_of_memory("do_cmd");
+                       } else
+                               args[argc++] = *remote_argv++;
                        remote_argc--;
                }
        }
@@ -450,7 +455,7 @@ static pid_t do_cmd(char *cmd, char *machine, char *user, char **remote_argv, in
                batch_gen_fd = from_gen_pipe[0];
                *f_out_p = from_gen_pipe[1];
                *f_in_p = batch_fd;
-               ret = -1; /* no child pid */
+               pid = (pid_t)-1; /* no child pid */
 #ifdef ICONV_CONST
                setup_iconv();
 #endif
@@ -460,57 +465,20 @@ static pid_t do_cmd(char *cmd, char *machine, char *user, char **remote_argv, in
                if (whole_file < 0 && !write_batch)
                        whole_file = 1;
                set_allow_inc_recurse();
-               ret = local_child(argc, args, f_in_p, f_out_p, child_main);
+               pid = local_child(argc, args, f_in_p, f_out_p, child_main);
 #ifdef ICONV_CONST
                setup_iconv();
 #endif
        } else {
+               pid = piped_child(args, f_in_p, f_out_p);
 #ifdef ICONV_CONST
                setup_iconv();
 #endif
-               if (protect_args) {
-                       int fd;
-#ifdef ICONV_OPTION
-                       int convert = ic_send != (iconv_t)-1;
-                       xbuf outbuf, inbuf;
-
-                       if (convert)
-                               alloc_xbuf(&outbuf, 1024);
-#endif
-
-                       ret = piped_child(args, f_in_p, f_out_p);
-
-                       for (i = 0; args[i]; i++) {} /* find first NULL */
-                       args[i] = "rsync"; /* set a new arg0 */
-                       if (verbose > 1)
-                               print_child_argv("protected args:", args + i + 1);
-                       fd = *f_out_p;
-                       do {
-#ifdef ICONV_OPTION
-                               if (convert) {
-                                       INIT_XBUF_STRLEN(inbuf, args[i]);
-                                       iconvbufs(ic_send, &inbuf, &outbuf,
-                                                 ICB_EXPAND_OUT | ICB_INCLUDE_BAD | ICB_INCLUDE_INCOMPLETE);
-                                       outbuf.buf[outbuf.len] = '\0';
-                                       write_buf(fd, outbuf.buf, outbuf.len + 1);
-                                       outbuf.len = 0;
-                               } else
-#endif
-                                       write_buf(fd, args[i], strlen(args[i]) + 1);
-                       } while (args[++i]);
-                       write_byte(fd, 0);
-#ifdef ICONV_OPTION
-                       if (convert)
-                               free(outbuf.buf);
-#endif
-               } else
-                       ret = piped_child(args, f_in_p, f_out_p);
+               if (protect_args && !daemon_over_rsh)
+                       send_protected_args(*f_out_p, args);
        }
 
-       if (dir)
-               free(dir);
-
-       return ret;
+       return pid;
 
   oom:
        out_of_memory("do_cmd");
@@ -544,12 +512,33 @@ static char *get_local_name(struct file_list *flist, char *dest_path)
        if (!dest_path || list_only)
                return NULL;
 
+       /* Treat an empty string as a copy into the current directory. */
+       if (!*dest_path)
+           dest_path = ".";
+
+       if (daemon_filter_list.head) {
+               char *slash = strrchr(dest_path, '/');
+               if (slash && (slash[1] == '\0' || (slash[1] == '.' && slash[2] == '\0')))
+                       *slash = '\0';
+               else
+                       slash = NULL;
+               if ((*dest_path != '.' || dest_path[1] != '\0')
+                && (check_filter(&daemon_filter_list, FLOG, dest_path, 0) < 0
+                 || check_filter(&daemon_filter_list, FLOG, dest_path, 1) < 0)) {
+                       rprintf(FERROR, "skipping daemon-excluded destination \"%s\"\n",
+                               dest_path);
+                       exit_cleanup(RERR_FILESELECT);
+               }
+               if (slash)
+                       *slash = '/';
+       }
+
        /* See what currently exists at the destination. */
        if ((statret = do_stat(dest_path, &st)) == 0) {
                /* If the destination is a dir, enter it and use mode 1. */
                if (S_ISDIR(st.st_mode)) {
-                       if (!push_dir(dest_path, 0)) {
-                               rsyserr(FERROR, errno, "push_dir#1 %s failed",
+                       if (!change_dir(dest_path, CD_NORMAL)) {
+                               rsyserr(FERROR, errno, "change_dir#1 %s failed",
                                        full_fname(dest_path));
                                exit_cleanup(RERR_FILESELECT);
                        }
@@ -608,8 +597,8 @@ static char *get_local_name(struct file_list *flist, char *dest_path)
                        dry_run++;
                }
 
-               if (!push_dir(dest_path, dry_run > 1)) {
-                       rsyserr(FERROR, errno, "push_dir#2 %s failed",
+               if (!change_dir(dest_path, dry_run > 1 ? CD_SKIP_CHDIR : CD_NORMAL)) {
+                       rsyserr(FERROR, errno, "change_dir#2 %s failed",
                                full_fname(dest_path));
                        exit_cleanup(RERR_FILESELECT);
                }
@@ -628,8 +617,8 @@ static char *get_local_name(struct file_list *flist, char *dest_path)
                dest_path = "/";
 
        *cp = '\0';
-       if (!push_dir(dest_path, 0)) {
-               rsyserr(FERROR, errno, "push_dir#3 %s failed",
+       if (!change_dir(dest_path, CD_NORMAL)) {
+               rsyserr(FERROR, errno, "change_dir#3 %s failed",
                        full_fname(dest_path));
                exit_cleanup(RERR_FILESELECT);
        }
@@ -638,36 +627,41 @@ static char *get_local_name(struct file_list *flist, char *dest_path)
        return cp + 1;
 }
 
-/* Call this if the destination dir (which is assumed to be in curr_dir)
- * does not yet exist and we can't create it due to being in dry-run
- * mode.  We'll fix dirs that can be relative to the non-existent dir. */
-static void fix_basis_dirs(void)
+/* This function checks on our alternate-basis directories.  If we're in
+ * dry-run mode and the destination dir does not yet exist, we'll try to
+ * tweak any dest-relative paths to make them work for a dry-run (the
+ * destination dir must be in curr_dir[] when this function is called).
+ * We also warn about any arg that is non-existent or not a directory. */
+static void check_alt_basis_dirs(void)
 {
-       char **dir, *new, *slash;
-       int len;
-
-       if (dry_run <= 1)
-               return;
-
-       slash = strrchr(curr_dir, '/');
-
-       for (dir = basis_dir; *dir; dir++) {
-               if (**dir == '/')
-                       continue;
-               len = curr_dir_len + 1 + strlen(*dir) + 1;
-               if (!(new = new_array(char, len)))
-                       out_of_memory("fix_basis_dirs");
-               if (slash && strncmp(*dir, "../", 3) == 0) {
-                   /* We want to remove only one leading "../" prefix for
-                    * the directory we couldn't create in dry-run mode:
-                    * this ensures that any other ".." references get
-                    * evaluated the same as they would for a live copy. */
-                   *slash = '\0';
-                   pathjoin(new, len, curr_dir, *dir + 3);
-                   *slash = '/';
-               } else
-                   pathjoin(new, len, curr_dir, *dir);
-               *dir = new;
+       STRUCT_STAT st;
+       char **dir_p, *slash = strrchr(curr_dir, '/');
+
+       for (dir_p = basis_dir; *dir_p; dir_p++) {
+               if (dry_run > 1 && **dir_p != '/') {
+                       int len = curr_dir_len + 1 + strlen(*dir_p) + 1;
+                       char *new = new_array(char, len);
+                       if (!new)
+                               out_of_memory("check_alt_basis_dirs");
+                       if (slash && strncmp(*dir_p, "../", 3) == 0) {
+                           /* We want to remove only one leading "../" prefix for
+                            * the directory we couldn't create in dry-run mode:
+                            * this ensures that any other ".." references get
+                            * evaluated the same as they would for a live copy. */
+                           *slash = '\0';
+                           pathjoin(new, len, curr_dir, *dir_p + 3);
+                           *slash = '/';
+                       } else
+                           pathjoin(new, len, curr_dir, *dir_p);
+                       *dir_p = new;
+               }
+               if (do_stat(*dir_p, &st) < 0) {
+                       rprintf(FWARNING, "%s arg does not exist: %s\n",
+                               dest_option, *dir_p);
+               } else if (!S_ISDIR(st.st_mode)) {
+                       rprintf(FWARNING, "%s arg is not a dir: %s\n",
+                               dest_option, *dir_p);
+               }
        }
 }
 
@@ -716,8 +710,8 @@ static void do_server_sender(int f_in, int f_out, int argc, char *argv[])
        }
 
        if (!relative_paths) {
-               if (!push_dir(dir, 0)) {
-                       rsyserr(FERROR, errno, "push_dir#3 %s failed",
+               if (!change_dir(dir, CD_NORMAL)) {
+                       rsyserr(FERROR, errno, "change_dir#3 %s failed",
                                full_fname(dir));
                        exit_cleanup(RERR_FILESELECT);
                }
@@ -755,7 +749,7 @@ static int do_recv(int f_in, int f_out, char *local_name)
 
        /* The receiving side mustn't obey this, or an existing symlink that
         * points to an identical file won't be replaced by the referent. */
-       copy_links = copy_dirlinks = 0;
+       copy_links = copy_dirlinks = copy_unsafe_links = 0;
 
 #ifdef SUPPORT_HARD_LINKS
        if (preserve_hard_links && !inc_recurse)
@@ -775,6 +769,8 @@ static int do_recv(int f_in, int f_out, char *local_name)
        }
 
        if (pid == 0) {
+               am_receiver = 1;
+
                close(error_pipe[0]);
                if (f_in != f_out)
                        close(f_out);
@@ -863,7 +859,6 @@ static void do_server_recv(int f_in, int f_out, int argc, char *argv[])
        int exit_code;
        struct file_list *flist;
        char *local_name = NULL;
-       char *dir = NULL;
        int save_verbose = verbose;
 
        if (filesfrom_fd >= 0) {
@@ -884,11 +879,11 @@ static void do_server_recv(int f_in, int f_out, int argc, char *argv[])
        }
 
        if (argc > 0) {
-               dir = argv[0];
+               char *dir = argv[0];
                argc--;
                argv++;
-               if (!am_daemon && !push_dir(dir, 0)) {
-                       rsyserr(FERROR, errno, "push_dir#4 %s failed",
+               if (!am_daemon && !change_dir(dir, CD_NORMAL)) {
+                       rsyserr(FERROR, errno, "change_dir#4 %s failed",
                                full_fname(dir));
                        exit_cleanup(RERR_FILESELECT);
                }
@@ -925,26 +920,27 @@ static void do_server_recv(int f_in, int f_out, int argc, char *argv[])
        /* Now that we know what our destination directory turned out to be,
         * we can sanitize the --link-/copy-/compare-dest args correctly. */
        if (sanitize_paths) {
-               char **dir;
-               for (dir = basis_dir; *dir; dir++) {
-                       *dir = sanitize_path(NULL, *dir, NULL, curr_dir_depth);
-               }
-               if (partial_dir) {
-                       partial_dir = sanitize_path(NULL, partial_dir, NULL, curr_dir_depth);
-               }
+               char **dir_p;
+               for (dir_p = basis_dir; *dir_p; dir_p++)
+                       *dir_p = sanitize_path(NULL, *dir_p, NULL, curr_dir_depth, SP_DEFAULT);
+               if (partial_dir)
+                       partial_dir = sanitize_path(NULL, partial_dir, NULL, curr_dir_depth, SP_DEFAULT);
        }
-       fix_basis_dirs();
+       check_alt_basis_dirs();
 
-       if (server_filter_list.head) {
-               char **dir;
-               struct filter_list_struct *elp = &server_filter_list;
+       if (daemon_filter_list.head) {
+               char **dir_p;
+               struct filter_list_struct *elp = &daemon_filter_list;
 
-               for (dir = basis_dir; *dir; dir++) {
-                       if (check_filter(elp, *dir, 1) < 0)
+               for (dir_p = basis_dir; *dir_p; dir_p++) {
+                       char *dir = *dir_p;
+                       if (*dir == '/')
+                               dir += module_dirlen;
+                       if (check_filter(elp, FLOG, dir, 1) < 0)
                                goto options_rejected;
                }
                if (partial_dir && *partial_dir == '/'
-                && check_filter(elp, partial_dir, 1) < 0) {
+                && check_filter(elp, FLOG, partial_dir + module_dirlen, 1) < 0) {
                    options_rejected:
                        rprintf(FERROR,
                                "Your options have been rejected by the server.\n");
@@ -1031,7 +1027,6 @@ int client_run(int f_in, int f_out, pid_t pid, int argc, char *argv[])
                if (write_batch && !am_server)
                        start_write_batch(f_out);
                flist = send_file_list(f_out, argc, argv);
-               set_msg_fd_in(-1);
                if (verbose > 3)
                        rprintf(FINFO,"file list sent\n");
 
@@ -1062,11 +1057,6 @@ int client_run(int f_in, int f_out, pid_t pid, int argc, char *argv[])
                        io_start_multiplex_out();
        }
 
-       if (argc == 0) {
-               list_only |= 1;
-               xfer_dirs |= 1;
-       }
-
        send_filter_list(read_batch ? -1 : f_out);
 
        if (filesfrom_fd >= 0) {
@@ -1083,7 +1073,7 @@ int client_run(int f_in, int f_out, pid_t pid, int argc, char *argv[])
        if (flist && flist->used > 0) {
                local_name = get_local_name(flist, argv[0]);
 
-               fix_basis_dirs();
+               check_alt_basis_dirs();
 
                exit_code2 = do_recv(f_in, f_out, local_name);
        } else {
@@ -1177,8 +1167,6 @@ static int start_client(int argc, char *argv[])
                                static char *dotarg[1] = { "." };
                                p = dotarg[0];
                                remote_argv = dotarg;
-                               list_only |= 1;
-                               xfer_dirs |= 1;
                        }
                        remote_argc = 1;
 
@@ -1209,8 +1197,8 @@ static int start_client(int argc, char *argv[])
                        rprintf(FERROR, "remote destination is not allowed with --read-batch\n");
                        exit_cleanup(RERR_SYNTAX);
                }
-               remote_argv = argv + argc - 1;
-               remote_argc = 1;
+               remote_argv = argv += argc - 1;
+               remote_argc = argc = 1;
        }
 
        if (am_sender) {
@@ -1250,10 +1238,6 @@ static int start_client(int argc, char *argv[])
                        }
                        remote_argv[i] = arg;
                }
-               if (argc == 0) {
-                       list_only |= 1;
-                       xfer_dirs |= 1;
-               }
        }
 
        if (daemon_over_rsh < 0)
@@ -1424,7 +1408,8 @@ int main(int argc,char *argv[])
 #endif
 
        starttime = time(NULL);
-       am_root = (MY_UID() == 0);
+       our_uid = MY_UID();
+       am_root = our_uid == 0;
 
        memset(&stats, 0, sizeof(stats));
 
@@ -1441,7 +1426,7 @@ int main(int argc,char *argv[])
        setlocale(LC_CTYPE, "");
 #endif
 
-       if (!parse_arguments(&argc, (const char ***) &argv, 1)) {
+       if (!parse_arguments(&argc, (const char ***) &argv)) {
                /* FIXME: We ought to call the same error-handling
                 * code here, rather than relying on getopt. */
                option_error();
@@ -1462,11 +1447,11 @@ int main(int argc,char *argv[])
        SIGACTION(SIGXFSZ, SIG_IGN);
 #endif
 
-       /* Initialize push_dir here because on some old systems getcwd
+       /* Initialize change_dir() here because on some old systems getcwd
         * (implemented by forking "pwd" and reading its output) doesn't
         * work when there are other child processes.  Also, on all systems
         * that implement getcwd that way "pwd" can't be found after chroot. */
-       push_dir(NULL, 0);
+       change_dir(NULL, CD_NORMAL);
 
        init_flist();
 
@@ -1490,7 +1475,6 @@ int main(int argc,char *argv[])
                        read_stream_flags(batch_fd);
                else
                        write_stream_flags(batch_fd);
-
        }
        if (write_batch < 0)
                dry_run = 1;
@@ -1506,7 +1490,7 @@ int main(int argc,char *argv[])
                char buf[MAXPATHLEN];
                protect_args = 2;
                read_args(STDIN_FILENO, NULL, buf, sizeof buf, 1, &argv, &argc, NULL);
-               if (!parse_arguments(&argc, (const char ***) &argv, 1)) {
+               if (!parse_arguments(&argc, (const char ***) &argv)) {
                        option_error();
                        exit_cleanup(RERR_SYNTAX);
                }