curl/docs/libcurl/opts/CURLOPT_UPLOAD_FLAGS.md
Daniel Stenberg b669a58f2e
CURLOPT_UPLOAD_FLAGS.md: expand
And list each supported flag in a nicer way

Closes #21218
2026-04-04 17:09:23 +02:00

122 lines
2.8 KiB
Markdown

---
c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
SPDX-License-Identifier: curl
Title: CURLOPT_UPLOAD_FLAGS
Section: 3
Source: libcurl
See-also:
- CURLOPT_UPLOAD (3)
Protocol:
- IMAP
- IMAPS
Added-in: 8.13.0
---
# NAME
CURLOPT_UPLOAD_FLAGS - upload flags for IMAP
# SYNOPSIS
~~~c
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_UPLOAD_FLAGS, long bitmask);
~~~
# DESCRIPTION
Pass a long as parameter, which is set to a bitmask, to tell libcurl which
flags to send the server relating to uploaded files. The currently supported
flags are:
## `CURLULFLAG_ANSWERED`
Sets the **Answered** flag for IMAP uploads. Indicates that the message has
been replied to.
## `CURLULFLAG_DELETED`
Sets the **Deleted** flag for IMAP uploads. Marks the message for deletion
rather than immediately removing it.
## `CURLULFLAG_DRAFT`
Sets the **Draft** flag for IMAP uploads. Marks the message as an uncompleted
composition.
## `CURLULFLAG_FLAGGED`
Sets the **Flagged** flag for IMAP uploads. Marks the message for special
attention.
## `CURLULFLAG_SEEN`
Sets the **Seen** flag for IMAP uploads. Marks the message as read.
##
# DEFAULT
A bitmask with only the **CURLULFLAG_SEEN** flag set.
# %PROTOCOLS%
# EXAMPLE
~~~c
static size_t read_cb(char *ptr, size_t size, size_t nmemb, void *userdata)
{
FILE *src = userdata;
/* copy as much data as possible into the 'ptr' buffer, but no more than
'size' * 'nmemb' bytes */
size_t retcode = fread(ptr, size, nmemb, src);
return retcode;
}
int main(void)
{
CURL *curl = curl_easy_init();
if(curl) {
FILE *src = fopen("local-file", "r");
curl_off_t fsize = 9876; /* set this to the size of the input file */
/* we want to use our own read function */
curl_easy_setopt(curl, CURLOPT_READFUNCTION, read_cb);
/* enable uploading */
curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);
/* specify target */
curl_easy_setopt(curl, CURLOPT_URL, "imap://example.com:993/mailbox");
/* provide username */
curl_easy_setopt(curl, CURLOPT_USERNAME, "user@example.com");
/* provide password */
curl_easy_setopt(curl, CURLOPT_PASSWORD, "password");
/* specify that uploaded mail should be considered flagged */
curl_easy_setopt(curl, CURLOPT_UPLOAD_FLAGS, CURLULFLAG_FLAGGED);
/* now specify which pointer to pass to our callback */
curl_easy_setopt(curl, CURLOPT_READDATA, src);
/* Set the size of the file to upload */
curl_easy_setopt(curl, CURLOPT_INFILESIZE_LARGE, (curl_off_t)fsize);
/* perform the upload */
curl_easy_perform(curl);
}
}
~~~
# %AVAILABILITY%
# RETURN VALUE
curl_easy_setopt(3) returns a CURLcode indicating success or error.
CURLE_OK (0) means everything was OK, non-zero means an error occurred, see
libcurl-errors(3).