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| 1 | +use crate::easy::Easy2; |
| 2 | +use crate::error::Error; |
| 3 | +use curl_sys::{ |
| 4 | + curl_mime_addpart, curl_mime_data, curl_mime_filename, curl_mime_free, curl_mime_init, |
| 5 | + curl_mime_name, curl_mime_type, curl_mimepart, CURLcode, CURLE_OK, |
| 6 | +}; |
| 7 | +use std::ffi::CString; |
| 8 | +use std::marker::PhantomData; |
| 9 | +use std::ptr::null_mut; |
| 10 | + |
| 11 | +#[derive(Debug)] |
| 12 | +pub struct Mime<'e, E> { |
| 13 | + handle: *mut curl_sys::curl_mime, |
| 14 | + easy: &'e mut Easy2<E>, |
| 15 | +} |
| 16 | + |
| 17 | +impl<'a, T> Mime<'a, T> { |
| 18 | + /// Create a mime handle |
| 19 | + pub(crate) fn new(easy: &'a mut Easy2<T>) -> Self { |
| 20 | + let handle = unsafe { curl_mime_init(easy.raw()) }; |
| 21 | + assert!(!handle.is_null()); |
| 22 | + |
| 23 | + Self { handle, easy } |
| 24 | + } |
| 25 | + |
| 26 | + /// Finalize creation of a mime post. |
| 27 | + pub fn post(mut self) -> Result<(), Error> { |
| 28 | + // once giving the mime handle to `Easy2` it is now their responsibility to free the handle. |
| 29 | + // so we need to make sure `Drop` below won't try to free it. |
| 30 | + let mime_handle = self.handle; |
| 31 | + self.handle = null_mut(); |
| 32 | + self.easy.mimepost(mime_handle) |
| 33 | + } |
| 34 | + |
| 35 | + /// Append a new empty part to a mime structure |
| 36 | + pub fn add_part(&mut self) -> MimePart<'a> { |
| 37 | + MimePart::new(self) |
| 38 | + } |
| 39 | +} |
| 40 | + |
| 41 | +impl<E> Drop for Mime<'_, E> { |
| 42 | + fn drop(&mut self) { |
| 43 | + // we only need to free mime handles which hadn't been given to the ownership of `Easy2`. |
| 44 | + if !self.handle.is_null() { |
| 45 | + unsafe { curl_mime_free(self.handle) } |
| 46 | + } |
| 47 | + } |
| 48 | +} |
| 49 | + |
| 50 | +#[derive(Debug)] |
| 51 | +pub struct MimePart<'a> { |
| 52 | + handle: *mut curl_mimepart, |
| 53 | + // attach to the lifetime of our [Mime] handle, but without taking ownership |
| 54 | + _lifetime: PhantomData<&'a ()>, |
| 55 | +} |
| 56 | + |
| 57 | +impl<'a> MimePart<'a> { |
| 58 | + fn new<E>(mime: &mut Mime<E>) -> Self { |
| 59 | + let handle = unsafe { curl_mime_addpart(mime.handle) }; |
| 60 | + assert!(!handle.is_null()); |
| 61 | + |
| 62 | + Self { |
| 63 | + handle, |
| 64 | + _lifetime: Default::default(), |
| 65 | + } |
| 66 | + } |
| 67 | + |
| 68 | + /// Set a mime part's body data |
| 69 | + pub fn set_data(self, data: impl AsRef<[u8]>) -> Result<Self, Error> { |
| 70 | + let data = data.as_ref(); |
| 71 | + let code = unsafe { curl_mime_data(self.handle, data.as_ptr() as *const _, data.len()) }; |
| 72 | + code_ok(code).map(|_| self) |
| 73 | + } |
| 74 | + |
| 75 | + /// Set a mime part's name |
| 76 | + /// |
| 77 | + /// # Panics |
| 78 | + /// If `name` contains nul bytes, panic will occur. |
| 79 | + pub fn set_name(self, name: &str) -> Result<Self, Error> { |
| 80 | + let data = CString::new(name).unwrap(); |
| 81 | + let code = unsafe { curl_mime_name(self.handle, data.as_ptr()) }; |
| 82 | + code_ok(code).map(|_| self) |
| 83 | + } |
| 84 | + |
| 85 | + /// Set a mime part's remote file name |
| 86 | + /// |
| 87 | + /// # Panics |
| 88 | + /// If `filename` contains nul bytes, panic will occur. |
| 89 | + pub fn set_filename(self, filename: &str) -> Result<Self, Error> { |
| 90 | + let data = CString::new(filename).unwrap(); |
| 91 | + let code = unsafe { curl_mime_filename(self.handle, data.as_ptr()) }; |
| 92 | + code_ok(code).map(|_| self) |
| 93 | + } |
| 94 | + |
| 95 | + /// Set a mime part's content type |
| 96 | + /// |
| 97 | + /// # Panics |
| 98 | + /// If `content_type` contains nul bytes, panic will occur. |
| 99 | + pub fn set_content_type(self, content_type: &str) -> Result<Self, Error> { |
| 100 | + let data = CString::new(content_type).unwrap(); |
| 101 | + let code = unsafe { curl_mime_type(self.handle, data.as_ptr()) }; |
| 102 | + code_ok(code).map(|_| self) |
| 103 | + } |
| 104 | +} |
| 105 | + |
| 106 | +fn code_ok(code: CURLcode) -> Result<(), Error> { |
| 107 | + if code == CURLE_OK { |
| 108 | + Ok(()) |
| 109 | + } else { |
| 110 | + Err(Error::new(code)) |
| 111 | + } |
| 112 | +} |
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