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-rw-r--r--docs/examples/Makefile.am2
-rw-r--r--docs/examples/ftpuploadresume.c154
2 files changed, 155 insertions, 1 deletions
diff --git a/docs/examples/Makefile.am b/docs/examples/Makefile.am
index c09183b64..61a6770fb 100644
--- a/docs/examples/Makefile.am
+++ b/docs/examples/Makefile.am
@@ -11,7 +11,7 @@ EXTRA_DIST = README curlgtk.c sepheaders.c simple.c postit2.c \
multi-post.c fopen.c simplepost.c makefile.dj curlx.c https.c \
multi-debugcallback.c fileupload.c getinfo.c ftp3rdparty.c debug.c \
anyauthput.c htmltitle.cc htmltidy.c opensslthreadlock.c \
- cookie_interface.c cacertinmem.c synctime.c sampleconv.c
+ cookie_interface.c cacertinmem.c synctime.c sampleconv.c ftpuploadresume.c
all:
@echo "done"
diff --git a/docs/examples/ftpuploadresume.c b/docs/examples/ftpuploadresume.c
new file mode 100644
index 000000000..f83cd0a2d
--- /dev/null
+++ b/docs/examples/ftpuploadresume.c
@@ -0,0 +1,154 @@
+/*****************************************************************************
+ * _ _ ____ _
+ * Project ___| | | | _ \| |
+ * / __| | | | |_) | |
+ * | (__| |_| | _ <| |___
+ * \___|\___/|_| \_\_____|
+ *
+ * $Id$
+ *
+ * Upload to FTP, resuming failed transfers
+ *
+ * Compile for MinGW like this:
+ * gcc -Wall -pedantic -std=c99 ftpuploadwithresume.c -o ftpuploadresume.exe
+ * -lcurl -lmsvcr70
+ *
+ * Written by Philip Bock
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+
+#include <curl/curl.h>
+
+
+/* The MinGW headers are missing a few Win32 function definitions,
+ you shouldn't need this if you use VC++ */
+int __cdecl _snscanf(const char * input, size_t length, const char * format, ...);
+
+
+/* parse headers for Content-Length */
+size_t getcontentlengthfunc(void *ptr, size_t size, size_t nmemb, void *stream) {
+ int r;
+ long len = 0;
+
+ /* _snscanf() is Win32 specific */
+ r = _snscanf(ptr, size * nmemb, "Content-Length: %ld\n", &len);
+
+ if (r) /* Microsoft: we don't read the specs */
+ *((long *) stream) = len;
+
+ return size * nmemb;
+}
+
+/* discard downloaded data */
+size_t discardfunc(void *ptr, size_t size, size_t nmemb, void *stream) {
+ return size * nmemb;
+}
+
+/* read data to upload */
+size_t readfunc(void *ptr, size_t size, size_t nmemb, void *stream)
+{
+ FILE *f = stream;
+ size_t n;
+
+ if (ferror(f))
+ return CURL_READFUNC_ABORT;
+
+ n = fread(ptr, size, nmemb, f) * size;
+
+ return n;
+}
+
+
+int upload(CURL *curlhandle, const char * remotepath, const char * localpath,
+ long timeout, long tries)
+{
+ FILE *f;
+ long uploaded_len = 0;
+ CURLcode r = CURLE_GOT_NOTHING;
+ int c;
+
+ f = fopen(localpath, "rb");
+ if (f == NULL) {
+ perror(NULL);
+ return 0;
+ }
+
+ curl_easy_setopt(curlhandle, CURLOPT_UPLOAD, TRUE);
+
+ curl_easy_setopt(curlhandle, CURLOPT_URL, remotepath);
+
+ if (timeout)
+ curl_easy_setopt(curlhandle, CURLOPT_FTP_RESPONSE_TIMEOUT, timeout);
+
+ curl_easy_setopt(curlhandle, CURLOPT_HEADERFUNCTION, getcontentlengthfunc);
+ curl_easy_setopt(curlhandle, CURLOPT_HEADERDATA, &uploaded_len);
+
+ curl_easy_setopt(curlhandle, CURLOPT_WRITEFUNCTION, discardfunc);
+
+ curl_easy_setopt(curlhandle, CURLOPT_READFUNCTION, readfunc);
+ curl_easy_setopt(curlhandle, CURLOPT_READDATA, f);
+
+ curl_easy_setopt(curlhandle, CURLOPT_FTPPORT, "-"); /* disable passive mode */
+ curl_easy_setopt(curlhandle, CURLOPT_FTP_CREATE_MISSING_DIRS, TRUE);
+
+ curl_easy_setopt(curlhandle, CURLOPT_VERBOSE, TRUE);
+
+ for (c = 0; (r != CURLE_OK) && (c < tries); c++) {
+ /* are we resuming? */
+ if (c) { /* yes */
+ /* determine the length of the file already written */
+
+ /*
+ * With NOBODY and NOHEADER, libcurl will issue a SIZE
+ * command, but the only way to retrieve the result is
+ * to parse the returned Content-Length header. Thus,
+ * getcontentlengthfunc(). We need discardfunc() above
+ * because HEADER will dump the headers to stdout
+ * without it.
+ */
+ curl_easy_setopt(curlhandle, CURLOPT_NOBODY, TRUE);
+ curl_easy_setopt(curlhandle, CURLOPT_HEADER, TRUE);
+
+ r = curl_easy_perform(curlhandle);
+ if (r != CURLE_OK)
+ continue;
+
+ curl_easy_setopt(curlhandle, CURLOPT_NOBODY, FALSE);
+ curl_easy_setopt(curlhandle, CURLOPT_HEADER, FALSE);
+
+ fseek(f, uploaded_len, SEEK_SET);
+
+ curl_easy_setopt(curlhandle, CURLOPT_FTPAPPEND, TRUE);
+ }
+ else { /* no */
+ curl_easy_setopt(curlhandle, CURLOPT_FTPAPPEND, FALSE);
+ }
+
+ r = curl_easy_perform(curlhandle);
+ }
+
+ fclose(f);
+
+ if (r == CURLE_OK)
+ return 1;
+ else {
+ fprintf(stderr, "%s\n", curl_easy_strerror(r));
+ return 0;
+ }
+}
+
+int main(int c, char **argv) {
+ CURL *curlhandle = NULL;
+
+ curl_global_init(CURL_GLOBAL_ALL);
+ curlhandle = curl_easy_init();
+
+ upload(curlhandle, "ftp://user:pass@host/path/file", "C:\\file", 0, 3);
+
+ curl_easy_cleanup(curlhandle);
+ curl_global_cleanup();
+
+ return 0;
+}