X-Git-Url: https://mattmccutchen.net/rsync/rsync.git/blobdiff_plain/93465f51bcc2484a1bdf0f94ed3b812fa5c39576..1fe0d1426309308128f0622452063f26de2ce590:/options.c

diff --git a/options.c b/options.c
index dce215e8..62214da6 100644
--- a/options.c
+++ b/options.c
@@ -102,6 +102,7 @@ int connect_timeout = 0;
 int keep_partial = 0;
 int safe_symlinks = 0;
 int copy_unsafe_links = 0;
+int munge_symlinks = 0;
 int size_only = 0;
 int daemon_bwlimit = 0;
 int bwlimit = 0;
@@ -121,6 +122,7 @@ int inplace = 0;
 int delay_updates = 0;
 long block_size = 0; /* "long" because popt can't set an int32. */
 char *skip_compress = NULL;
+item_list dparam_list = EMPTY_ITEM_LIST;
 
 /** Network address family. **/
 int default_af_hint
@@ -669,6 +671,7 @@ void usage(enum logcode F)
   rprintf(F," -L, --copy-links            transform symlink into referent file/dir\n");
   rprintf(F,"     --copy-unsafe-links     only \"unsafe\" symlinks are transformed\n");
   rprintf(F,"     --safe-links            ignore symlinks that point outside the source tree\n");
+  rprintf(F,"     --munge-links           munge symlinks to make them safer (but unusable)\n");
   rprintf(F," -k, --copy-dirlinks         transform symlink to a dir into referent dir\n");
   rprintf(F," -K, --keep-dirlinks         treat symlinked dir on receiver as dir\n");
   rprintf(F," -H, --hard-links            preserve hard links\n");
@@ -854,6 +857,8 @@ static struct poptOption long_options[] = {
   {"copy-links",      'L', POPT_ARG_NONE,   &copy_links, 0, 0, 0 },
   {"copy-unsafe-links",0,  POPT_ARG_NONE,   &copy_unsafe_links, 0, 0, 0 },
   {"safe-links",       0,  POPT_ARG_NONE,   &safe_symlinks, 0, 0, 0 },
+  {"munge-links",      0,  POPT_ARG_VAL,    &munge_symlinks, 1, 0, 0 },
+  {"no-munge-links",   0,  POPT_ARG_VAL,    &munge_symlinks, 0, 0, 0 },
   {"copy-dirlinks",   'k', POPT_ARG_NONE,   &copy_dirlinks, 0, 0, 0 },
   {"keep-dirlinks",   'K', POPT_ARG_NONE,   &keep_dirlinks, 0, 0, 0 },
   {"hard-links",      'H', POPT_ARG_NONE,   0, 'H', 0, 0 },
@@ -992,6 +997,7 @@ static struct poptOption long_options[] = {
   /* All the following options switch us into daemon-mode option-parsing. */
   {"config",           0,  POPT_ARG_STRING, 0, OPT_DAEMON, 0, 0 },
   {"daemon",           0,  POPT_ARG_NONE,   0, OPT_DAEMON, 0, 0 },
+  {"dparam",           0,  POPT_ARG_STRING, 0, OPT_DAEMON, 0, 0 },
   {"detach",           0,  POPT_ARG_NONE,   0, OPT_DAEMON, 0, 0 },
   {"no-detach",        0,  POPT_ARG_NONE,   0, OPT_DAEMON, 0, 0 },
   {0,0,0,0, 0, 0, 0}
@@ -1006,6 +1012,7 @@ static void daemon_usage(enum logcode F)
   rprintf(F,"     --address=ADDRESS       bind to the specified address\n");
   rprintf(F,"     --bwlimit=KBPS          limit I/O bandwidth; KBytes per second\n");
   rprintf(F,"     --config=FILE           specify alternate rsyncd.conf file\n");
+  rprintf(F," -M, --dparam=OVERRIDE       override global daemon config parameter\n");
   rprintf(F,"     --no-detach             do not detach from the parent\n");
   rprintf(F,"     --port=PORT             listen on alternate port number\n");
   rprintf(F,"     --log-file=FILE         override the \"log file\" setting\n");
@@ -1027,6 +1034,7 @@ static struct poptOption long_daemon_options[] = {
   {"bwlimit",          0,  POPT_ARG_INT,    &daemon_bwlimit, 0, 0, 0 },
   {"config",           0,  POPT_ARG_STRING, &config_file, 0, 0, 0 },
   {"daemon",           0,  POPT_ARG_NONE,   &daemon_opt, 0, 0, 0 },
+  {"dparam",          'M', POPT_ARG_STRING, 0, 'M', 0, 0 },
   {"ipv4",            '4', POPT_ARG_VAL,    &default_af_hint, AF_INET, 0, 0 },
   {"ipv6",            '6', POPT_ARG_VAL,    &default_af_hint, AF_INET6, 0, 0 },
   {"detach",           0,  POPT_ARG_VAL,    &no_detach, 0, 0, 0 },
@@ -1310,11 +1318,24 @@ int parse_arguments(int *argc_p, const char ***argv_p)
 			pc = poptGetContext(RSYNC_NAME, argc, argv,
 					    long_daemon_options, 0);
 			while ((opt = poptGetNextOpt(pc)) != -1) {
+				char **cpp;
 				switch (opt) {
 				case 'h':
 					daemon_usage(FINFO);
 					exit_cleanup(0);
 
+				case 'M':
+					arg = poptGetOptArg(pc);
+					if (!strchr(arg, '=')) {
+						rprintf(FERROR,
+						    "--dparam value is missing an '=': %s\n",
+						    arg);
+						goto daemon_error;
+					}
+					cpp = EXPAND_ITEM_LIST(&dparam_list, char *, 4);
+					*cpp = strdup(arg);
+					break;
+
 				case 'v':
 					verbose++;
 					break;
@@ -1328,6 +1349,9 @@ int parse_arguments(int *argc_p, const char ***argv_p)
 				}
 			}
 
+			if (dparam_list.count && !set_dparams(1))
+				exit_cleanup(RERR_SYNTAX);
+
 			if (tmpdir && strlen(tmpdir) >= MAXPATHLEN - 10) {
 				snprintf(err_buf, sizeof err_buf,
 					 "the --temp-dir path is WAY too long.\n");
@@ -1822,6 +1846,17 @@ int parse_arguments(int *argc_p, const char ***argv_p)
 		need_messages_from_generator = 1;
 	}
 
+	if (munge_symlinks && !am_daemon) {
+		STRUCT_STAT st;
+		char prefix[SYMLINK_PREFIX_LEN]; /* NOT +1 ! */
+		strlcpy(prefix, SYMLINK_PREFIX, sizeof prefix); /* trim the trailing slash */
+		if (do_stat(prefix, &st) == 0 && S_ISDIR(st.st_mode)) {
+			rprintf(FERROR, "Symlink munging is unsafe when a %s directory exists.\n",
+				prefix);
+			exit_cleanup(RERR_UNSUPPORTED);
+		}
+	}
+
 	if (sanitize_paths) {
 		int i;
 		for (i = argc; i-- > 0; )