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authorDenys Vlasenko2018-04-07 14:02:21 +0200
committerDenys Vlasenko2018-04-07 14:02:21 +0200
commit8edaaced16664503e89d9be80637e17dedc56ab9 (patch)
tree944e3ea4deb9a859700e382007873b5942a02e81 /networking/ftpd.c
parent32c3e3a44cb6ae2b0ff949e9f60fa0405f081dc3 (diff)
downloadbusybox-8edaaced16664503e89d9be80637e17dedc56ab9.zip
busybox-8edaaced16664503e89d9be80637e17dedc56ab9.tar.gz
ftpd: added -A option to disable all authentication, closes 10921
function old new delta packed_usage 32745 32777 +32 ftpd_main 2162 2156 -6 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 1/1 up/down: 32/-6) Total: 26 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'networking/ftpd.c')
-rw-r--r--networking/ftpd.c69
1 files changed, 40 insertions, 29 deletions
diff --git a/networking/ftpd.c b/networking/ftpd.c
index e289a60..4ecdb41 100644
--- a/networking/ftpd.c
+++ b/networking/ftpd.c
@@ -57,7 +57,7 @@
//usage: "[-wvS]"IF_FEATURE_FTPD_AUTHENTICATION(" [-a USER]")" [-t N] [-T N] [DIR]"
//usage:#define ftpd_full_usage "\n\n"
//usage: IF_NOT_FEATURE_FTPD_AUTHENTICATION(
-//usage: "Anonymous FTP server. Accesses by clients occur under ftpd's UID.\n"
+//usage: "Anonymous FTP server. Client access occurs under ftpd's UID.\n"
//usage: )
//usage: IF_FEATURE_FTPD_AUTHENTICATION(
//usage: "FTP server. "
@@ -66,9 +66,11 @@
//usage: "Should be used as inetd service, inetd.conf line:\n"
//usage: " 21 stream tcp nowait root ftpd ftpd /files/to/serve\n"
//usage: "Can be run from tcpsvd:\n"
-//usage: " tcpsvd -vE 0.0.0.0 21 ftpd /files/to/serve\n"
+//usage: " tcpsvd -vE 0.0.0.0 21 ftpd /files/to/serve"
+//usage: "\n"
//usage: "\n -w Allow upload"
//usage: IF_FEATURE_FTPD_AUTHENTICATION(
+//usage: "\n -A No login required, client access occurs under ftpd's UID"
//usage: "\n -a USER Enable 'anonymous' login and map it to USER"
//usage: )
//usage: "\n -v Log errors to stderr. -vv: verbose log"
@@ -1157,9 +1159,12 @@ enum {
OPT_1 = (1 << 1),
OPT_A = (1 << 2),
#endif
- OPT_v = (1 << ((!BB_MMU) * 3 + 0)),
- OPT_S = (1 << ((!BB_MMU) * 3 + 1)),
- OPT_w = (1 << ((!BB_MMU) * 3 + 2)) * ENABLE_FEATURE_FTPD_WRITE,
+ BIT_v = (!BB_MMU) * 3,
+ OPT_v = (1 << (BIT_v + 0)),
+ OPT_S = (1 << (BIT_v + 1)),
+ OPT_w = (1 << (BIT_v + 2)) * ENABLE_FEATURE_FTPD_WRITE,
+ BIT_A = BIT_v + 2 + ENABLE_FEATURE_FTPD_WRITE,
+ OPT_A = (1 << (BIT_A + 0)) * ENABLE_FEATURE_FTPD_AUTHENTICATION,
};
int ftpd_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
@@ -1180,14 +1185,16 @@ int ftpd_main(int argc UNUSED_PARAM, char **argv)
G.timeout = 2 * 60;
#if BB_MMU
opts = getopt32(argv, "^" "vS"
- IF_FEATURE_FTPD_WRITE("w") "t:+T:+" IF_FEATURE_FTPD_AUTHENTICATION("a:")
+ IF_FEATURE_FTPD_WRITE("w") IF_FEATURE_FTPD_AUTHENTICATION("A")
+ "t:+T:+" IF_FEATURE_FTPD_AUTHENTICATION("a:")
"\0" "vv:SS",
&G.timeout, &abs_timeout, IF_FEATURE_FTPD_AUTHENTICATION(&anon_opt,)
&G.verbose, &verbose_S
);
#else
opts = getopt32(argv, "^" "l1AvS"
- IF_FEATURE_FTPD_WRITE("w") "t:+T:+" IF_FEATURE_FTPD_AUTHENTICATION("a:")
+ IF_FEATURE_FTPD_WRITE("w") IF_FEATURE_FTPD_AUTHENTICATION("A")
+ "t:+T:+" IF_FEATURE_FTPD_AUTHENTICATION("a:")
"\0" "vv:SS",
&G.timeout, &abs_timeout, IF_FEATURE_FTPD_AUTHENTICATION(&anon_opt,)
&G.verbose, &verbose_S
@@ -1254,30 +1261,32 @@ int ftpd_main(int argc UNUSED_PARAM, char **argv)
signal(SIGALRM, timeout_handler);
#if ENABLE_FEATURE_FTPD_AUTHENTICATION
- while (1) {
- uint32_t cmdval = cmdio_get_cmd_and_arg();
- if (cmdval == const_USER) {
- if (anon_opt && strcmp(G.ftp_arg, "anonymous") == 0) {
- pw = getpwnam(anon_opt);
- if (pw)
- break; /* does not even ask for password */
- }
- pw = getpwnam(G.ftp_arg);
- cmdio_write_raw(STR(FTP_GIVEPWORD)" Specify password\r\n");
- } else if (cmdval == const_PASS) {
- if (check_password(pw, G.ftp_arg) > 0) {
- break; /* login success */
+ if (!(opts & OPT_A)) {
+ while (1) {
+ uint32_t cmdval = cmdio_get_cmd_and_arg();
+ if (cmdval == const_USER) {
+ if (anon_opt && strcmp(G.ftp_arg, "anonymous") == 0) {
+ pw = getpwnam(anon_opt);
+ if (pw)
+ break; /* does not even ask for password */
+ }
+ pw = getpwnam(G.ftp_arg);
+ cmdio_write_raw(STR(FTP_GIVEPWORD)" Specify password\r\n");
+ } else if (cmdval == const_PASS) {
+ if (check_password(pw, G.ftp_arg) > 0) {
+ break; /* login success */
+ }
+ cmdio_write_raw(STR(FTP_LOGINERR)" Login failed\r\n");
+ pw = NULL;
+ } else if (cmdval == const_QUIT) {
+ WRITE_OK(FTP_GOODBYE);
+ return 0;
+ } else {
+ cmdio_write_raw(STR(FTP_LOGINERR)" Login with USER+PASS\r\n");
}
- cmdio_write_raw(STR(FTP_LOGINERR)" Login failed\r\n");
- pw = NULL;
- } else if (cmdval == const_QUIT) {
- WRITE_OK(FTP_GOODBYE);
- return 0;
- } else {
- cmdio_write_raw(STR(FTP_LOGINERR)" Login with USER+PASS\r\n");
}
+ WRITE_OK(FTP_LOGINOK);
}
- WRITE_OK(FTP_LOGINOK);
#endif
/* Do this after auth, else /etc/passwd is not accessible */
@@ -1309,7 +1318,9 @@ int ftpd_main(int argc UNUSED_PARAM, char **argv)
}
#if ENABLE_FEATURE_FTPD_AUTHENTICATION
- change_identity(pw);
+ if (pw)
+ change_identity(pw);
+ /* else: -A is in effect */
#endif
/* RFC-959 Section 5.1