TFTP: add option to suppress TFTP option requests (Part 2)

- Add tests. - Add an example to CURLOPT_TFTP_NO_OPTIONS.3. - Add --tftp-no-options to expose CURLOPT_TFTP_NO_OPTIONS. Bug: https://github.com/curl/curl/issues/481
2024-12-21 15:48:49 -05:00 · 2015-08-24 00:15:01 -04:00 · 2015-08-24 00:15:01 -04:00 · 186546f1c5
commit 186546f1c5
parent 9dc3eaee29
12 changed files with 155 additions and 20 deletions
--- a/docs/curl.1
+++ b/docs/curl.1
@ -1730,6 +1730,14 @@ default 512 bytes will be used.
 If this option is used several times, the last one will be used.

 (Added in 7.20.0)
+.IP "--tftp-no-options"
+(TFTP) Tells curl not to send TFTP options requests.
+
+This option improves interop with some legacy servers that do not acknowledge
+or properly implement TFTP options. When this option is used
+\fI--tftp-blksize\fP is ignored.
+
+(Added in 7.48.0)
 .IP "--tlsauthtype <authtype>"
 Set TLS authentication type. Currently, the only supported option is "SRP",
 for TLS-SRP (RFC 5054). If \fI--tlsuser\fP and \fI--tlspassword\fP are
--- a/docs/libcurl/curl_easy_setopt.3
+++ b/docs/libcurl/curl_easy_setopt.3
@ -315,7 +315,7 @@ Authentication address. See \fICURLOPT_MAIL_AUTH(3)\fP
 .IP CURLOPT_TFTP_BLKSIZE
 TFTP block size. See \fICURLOPT_TFTP_BLKSIZE(3)\fP
 .IP CURLOPT_TFTP_NO_OPTIONS
-Prevents TFTP options to be send with RRQs/WRQs. See \fICURLOPT_TFTP_NO_OPTIONS(3)\fP
+Do not send TFTP options requests. See \fICURLOPT_TFTP_NO_OPTIONS(3)\fP
 .SH FTP OPTIONS
 .IP CURLOPT_FTPPORT
 Use active FTP. See \fICURLOPT_FTPPORT(3)\fP
--- a/docs/libcurl/opts/CURLOPT_TFTP_NO_OPTIONS.3
+++ b/docs/libcurl/opts/CURLOPT_TFTP_NO_OPTIONS.3
@ -20,24 +20,51 @@
 .\" *
 .\" **************************************************************************
 .\"
-.TH CURLOPT_TFTP_NO_OPTIONS 3 "19 Jun 2014" "libcurl 7.37.0" "curl_easy_setopt options"
+.TH CURLOPT_TFTP_NO_OPTIONS 3 "23 Feb 2016" "libcurl 7.48.0" "curl_easy_setopt options"
 .SH NAME
-CURLOPT_TFTP_NO_OPTIONS \- Prevents TFTP options to be send with RRQs/WRQs
+CURLOPT_TFTP_NO_OPTIONS \- Do not send TFTP options requests.
 .SH SYNOPSIS
 #include <curl/curl.h>

-CURLcode curl_easy_setopt(CURL *handle, CURLOPT_TFTP_NO_OPTIONS, long sendoptions);
+CURLcode curl_easy_setopt(CURL *handle, CURLOPT_TFTP_NO_OPTIONS, long onoff);
 .SH DESCRIPTION
-Set \fIsendoptions\fP to 1 to exclude all TFTP options defined in RFC2347,
-RFC2348, RFC2349 from read and write requests.
-libcurl will behave like a client implementing only RFC1350, ignoring any
-protocol extensions.
+Set \fIonoff\fP to 1L to exclude all TFTP options defined in RFC2347, RFC2348
+and RFC2349 from read and write requests (RRQs/WRQs).
+
+This option improves interop with some legacy servers that do not acknowledge
+or properly implement TFTP options. When this option is used
+\fICURLOPT_TFTP_BLKSIZE(3)\fP is ignored.
 .SH DEFAULT
 0
 .SH PROTOCOLS
 TFTP
 .SH EXAMPLE
-TODO
+.nf
+size_t write_callback(char *ptr, size_t size, size_t nmemb, void *fp)
+{
+  return fwrite(ptr, size, nmemb, (FILE *)fp);
+}
+
+CURL *curl = curl_easy_init();
+if(curl) {
+  FILE *fp = fopen("foo.bin", "wb");
+  if(fp) {
+    curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *)fp);
+    curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_callback);
+
+    curl_easy_setopt(curl, CURLOPT_URL, "tftp://example.com/foo.bin");
+
+    /* do not send TFTP options requests */
+    curl_easy_setopt(curl, CURLOPT_TFTP_NO_OPTIONS, 1L);
+
+    /* Perform the request */
+    curl_easy_perform(curl);
+
+    fclose(fp);
+  }
+  curl_easy_cleanup(curl);
+}
+.fi
 .SH AVAILABILITY
 Added in 7.48.0
 .SH RETURN VALUE
--- a/docs/libcurl/opts/Makefile.am
+++ b/docs/libcurl/opts/Makefile.am
@ -97,11 +97,12 @@ man_MANS = CURLOPT_ACCEPT_ENCODING.3 CURLOPT_ACCEPTTIMEOUT_MS.3		\
 CURLOPT_SSL_VERIFYPEER.3 CURLOPT_SSL_VERIFYSTATUS.3			\
 CURLOPT_SSLVERSION.3 CURLOPT_STDERR.3 CURLOPT_TCP_KEEPALIVE.3		\
 CURLOPT_TCP_KEEPIDLE.3 CURLOPT_TCP_KEEPINTVL.3 CURLOPT_TCP_NODELAY.3	\
- CURLOPT_TELNETOPTIONS.3 CURLOPT_TFTP_BLKSIZE.3 CURLOPT_TIMECONDITION.3	\
- CURLOPT_TIMEOUT.3 CURLOPT_TIMEOUT_MS.3 CURLOPT_TIMEVALUE.3		\
- CURLOPT_TLSAUTH_PASSWORD.3 CURLOPT_TLSAUTH_TYPE.3			\
- CURLOPT_TLSAUTH_USERNAME.3 CURLOPT_TRANSFER_ENCODING.3			\
- CURLOPT_TRANSFERTEXT.3 CURLOPT_UNRESTRICTED_AUTH.3 CURLOPT_UPLOAD.3	\
+ CURLOPT_TELNETOPTIONS.3 CURLOPT_TFTP_BLKSIZE.3				\
+ CURLOPT_TFTP_NO_OPTIONS.3 CURLOPT_TIMECONDITION.3 CURLOPT_TIMEOUT.3	\
+ CURLOPT_TIMEOUT_MS.3 CURLOPT_TIMEVALUE.3 CURLOPT_TLSAUTH_PASSWORD.3	\
+ CURLOPT_TLSAUTH_TYPE.3 CURLOPT_TLSAUTH_USERNAME.3			\
+ CURLOPT_TRANSFER_ENCODING.3 CURLOPT_TRANSFERTEXT.3			\
+ CURLOPT_UNRESTRICTED_AUTH.3 CURLOPT_UPLOAD.3				\
 CURLOPT_URL.3 CURLOPT_USERAGENT.3 CURLOPT_USERNAME.3 CURLOPT_USERPWD.3	\
 CURLOPT_USE_SSL.3 CURLOPT_VERBOSE.3 CURLOPT_WILDCARDMATCH.3		\
 CURLOPT_WRITEDATA.3 CURLOPT_WRITEFUNCTION.3 CURLOPT_XFERINFODATA.3	\
@ -224,8 +225,9 @@ HTMLPAGES = CURLOPT_ACCEPT_ENCODING.html CURLOPT_ACCEPTTIMEOUT_MS.html	\
 CURLOPT_SSLVERSION.html CURLOPT_STDERR.html CURLOPT_TCP_KEEPALIVE.html	\
 CURLOPT_TCP_KEEPIDLE.html CURLOPT_TCP_KEEPINTVL.html			\
 CURLOPT_TCP_NODELAY.html CURLOPT_TELNETOPTIONS.html			\
- CURLOPT_TFTP_BLKSIZE.html CURLOPT_TIMECONDITION.html			\
- CURLOPT_TIMEOUT.html CURLOPT_TIMEOUT_MS.html CURLOPT_TIMEVALUE.html	\
+ CURLOPT_TFTP_BLKSIZE.html CURLOPT_TFTP_NO_OPTIONS.html			\
+ CURLOPT_TIMECONDITION.html CURLOPT_TIMEOUT.html			\
+ CURLOPT_TIMEOUT_MS.html CURLOPT_TIMEVALUE.html				\
 CURLOPT_TLSAUTH_PASSWORD.html CURLOPT_TLSAUTH_TYPE.html		\
 CURLOPT_TLSAUTH_USERNAME.html CURLOPT_TRANSFER_ENCODING.html		\
 CURLOPT_TRANSFERTEXT.html CURLOPT_UNRESTRICTED_AUTH.html		\
@ -354,7 +356,8 @@ PDFPAGES = CURLOPT_ACCEPT_ENCODING.pdf CURLOPT_ACCEPTTIMEOUT_MS.pdf	\
 CURLOPT_SSLVERSION.pdf CURLOPT_STDERR.pdf CURLOPT_TCP_KEEPALIVE.pdf	\
 CURLOPT_TCP_KEEPIDLE.pdf CURLOPT_TCP_KEEPINTVL.pdf			\
 CURLOPT_TCP_NODELAY.pdf CURLOPT_TELNETOPTIONS.pdf			\
- CURLOPT_TFTP_BLKSIZE.pdf CURLOPT_TIMECONDITION.pdf CURLOPT_TIMEOUT.pdf	\
+ CURLOPT_TFTP_BLKSIZE.pdf CURLOPT_TFTP_NO_OPTIONS.pdf			\
+ CURLOPT_TIMECONDITION.pdf CURLOPT_TIMEOUT.pdf				\
 CURLOPT_TIMEOUT_MS.pdf CURLOPT_TIMEVALUE.pdf				\
 CURLOPT_TLSAUTH_PASSWORD.pdf CURLOPT_TLSAUTH_TYPE.pdf			\
 CURLOPT_TLSAUTH_USERNAME.pdf CURLOPT_TRANSFER_ENCODING.pdf		\
--- a/lib/tftp.c
+++ b/lib/tftp.c
@ -978,7 +978,7 @@ static CURLcode tftp_connect(struct connectdata *conn, bool *done)
      return CURLE_OUT_OF_MEMORY;
  }

-  /* we don't keep TFTP connections up bascially because there's none or very
+  /* we don't keep TFTP connections up basically because there's none or very
   * little gain for UDP */
  connclose(conn, "TFTP");

--- a/src/tool_cfgable.h
+++ b/src/tool_cfgable.h
@ -183,6 +183,7 @@ struct OperationConfig {
  char *ftp_alternative_to_user;  /* send command if USER/PASS fails */
  int ftp_filemethod;
  long tftp_blksize;        /* TFTP BLKSIZE option */
+  bool tftp_no_options;     /* do not send TFTP options requests */
  bool ignorecl;            /* --ignore-content-length */
  bool disable_sessionid;

--- a/src/tool_getparam.c
+++ b/src/tool_getparam.c
@ -180,6 +180,7 @@ static const struct LongShort aliases[]= {
  {"$P", "service-name",             TRUE},
  {"$Q", "proto-default",            TRUE},
  {"$R", "expect100-timeout",        TRUE},
+  {"$S", "tftp-no-options",          FALSE},
  {"0",   "http1.0",                 FALSE},
  {"01",  "http1.1",                 FALSE},
  {"02",  "http2",                   FALSE},
@ -1005,6 +1006,9 @@ ParameterError getparameter(char *flag,    /* f or -long-flag */
        if(err)
          return err;
        break;
+      case 'S': /* --tftp-no-options */
+        config->tftp_no_options = toggle;
+        break;
      }
      break;
    case '#': /* --progress-bar */
--- a/src/tool_help.c
+++ b/src/tool_help.c
@ -221,7 +221,8 @@ static const char *const helptext[] = {
  "     --tcp-nodelay   Use the TCP_NODELAY option",
  " -t, --telnet-option OPT=VAL  Set telnet option",
  "     --tftp-blksize VALUE  Set TFTP BLKSIZE option (must be >512)",
-  " -z, --time-cond TIME  Transfer based on a time condition",
+  "     --tftp-no-options  Do not send TFTP options requests",
+  " -z, --time-cond TIME   Transfer based on a time condition",
  " -1, --tlsv1         Use >= TLSv1 (SSL)",
  "     --tlsv1.0       Use TLSv1.0 (SSL)",
  "     --tlsv1.1       Use TLSv1.1 (SSL)",
--- a/src/tool_operate.c
+++ b/src/tool_operate.c
@ -1354,6 +1354,10 @@ static CURLcode operate_do(struct GlobalConfig *global,
          my_setopt_str(curl, CURLOPT_EXPECT_100_TIMEOUT_MS,
                        (long)(config->expect100timeout*1000));

+        /* new in 7.48.0 */
+        if(config->tftp_no_options)
+          my_setopt(curl, CURLOPT_TFTP_NO_OPTIONS, 1L);
+
        /* initialize retry vars for loop below */
        retry_sleep_default = (config->retry_delay) ?
          config->retry_delay*1000L : RETRY_SLEEP_DEFAULT; /* ms */
--- a/tests/data/Makefile.inc
+++ b/tests/data/Makefile.inc
@ -126,7 +126,7 @@ test1208 test1209 test1210 test1211 test1212 test1213 test1214 test1215 \
 test1216 test1217 test1218 test1219 \
 test1220 test1221 test1222 test1223 test1224 test1225 test1226 test1227 \
 test1228 test1229 test1230 test1231 test1232 test1233 test1234 test1235 \
-test1236 test1237 test1238 test1239 test1240 test1241 \
+test1236 test1237 test1238 test1239 test1240 test1241 test1242 test1243 \
 \
 test1300 test1301 test1302 test1303 test1304 test1305 test1306 test1307 \
 test1308 test1309 test1310 test1311 test1312 test1313 test1314 test1315 \
--- a/tests/data/test1242
+++ b/tests/data/test1242
@ -0,0 +1,43 @@
+<testcase>
+<info>
+<keywords>
+TFTP
+TFTP RRQ
+</keywords>
+</info>
+
+#
+# Server-side
+<reply>
+<data>
+a chunk of
+data
+returned
+ to client
+</data>
+</reply>
+
+#
+# Client-side
+<client>
+<server>
+tftp
+</server>
+ <name>
+TFTP retrieve without TFTP options requests
+ </name>
+ <command>
+tftp://%HOSTIP:%TFTPPORT//1242 --tftp-no-options --trace-ascii log/traceit
+</command>
+</client>
+
+#
+# Verify pseudo protocol after the test has been "shot"
+<verify>
+<protocol>
+opcode: 1
+mode: octet
+filename: /1242
+</protocol>
+</verify>
+</testcase>
--- a/tests/data/test1243
+++ b/tests/data/test1243
@ -0,0 +1,44 @@
+<testcase>
+<info>
+<keywords>
+TFTP
+TFTP WRQ
+</keywords>
+</info>
+
+#
+# Client-side
+<client>
+<server>
+tftp
+</server>
+ <name>
+TFTP send without TFTP options requests
+ </name>
+ <command>
+-T log/test1243.txt tftp://%HOSTIP:%TFTPPORT// --tftp-no-options --trace-ascii log/traceit
+</command>
+<file name="log/test1243.txt">
+a chunk of
+data
+sent
+ to server
+</file>
+</client>
+
+#
+# Verify pseudo protocol after the test has been "shot"
+<verify>
+<upload>
+a chunk of
+data
+sent
+ to server
+</upload>
+<protocol>
+opcode: 2
+mode: octet
+filename: /test1243.txt
+</protocol>
+</verify>
+</testcase>