Migrate structure allocations from calloc to glibs g_new0 macro to
improve type safety and memory robustness.
* Type Safety: The macro takes the type name directly, ensuring the
allocated size always matches the pointer type.
* Static Analysis: It guarantees a non-NULL return by aborting on
failure, which silences -fanalyzer warnings regarding potential NULL
pointer dereferences.
* Readability: Removes redundant sizeof() calls and is the glib way
`http_dl->bytes_received` was already free'd when it was accessed inside
`aesgcm_file_get()`.
Change `http_file_get()` to optionally return the number of bytes received
so we know how much data we have to decrypt.
This fixes#1994
Signed-off-by: Steffen Jaeckel <s@jaeckel.eu>
* use `calloc()` to allocate zero-initialized structs.
* order the allocation of members by their declaration.
* order the freeing of members in reverse order.
* move init of `silent` flag in plugin case.
* fix double free of `tmpname` in `aesgcm_file_get()`.
* make some functions static.
Signed-off-by: Steffen Jaeckel <s@jaeckel.eu>
## Summary
Partial fix for https://github.com/profanity-im/profanity/issues/1939
> When doing the same in an unencrypted (no e2ee) chat there is no Downloading… message at all but the file is downloaded.
Download a file twice with `/url save`, the second download will not print download progress to the window.
The cause is `HTTPDownload`'s `silent` variable is not initialized; so, `silent` points to a second-hand stack memory address with old data. `silent` references data, so the `if` statement will fail in **src/tools/http_download.c:206** and download progress will not print to the window.
The fix is to initialize `silent` in both encrypted and unencrypted file download scenarios.
## Testing
Valgrind: Yes
- `/url save` without OMEMO
**SUCCESS**: Try three times with the same URL and download status will display every time.
- `/url save` with OMEMO
**SUCCESS**: Try three times with the same URL and download status will display every time.
- `/plugins install https://raw.githubusercontent.com/profanity-im/profanity-plugins/master/stable/sounds.py`
**SUCCESS**: Try once and download progress is hidden.
Fixes https://github.com/profanity-im/profanity/issues/1794
Explanation
The problem is the download's identifier. Downloads are given an ID so they can be referenced later when their progress changes. Currently, the download's ID is the download's URL. When you download the same file twice, you have two downloads with the same ID. Download progress updates are shown on the first of both downloads with the same ID.
Solution
Change the download's ID from its URL to a random number. A random ID is generated when get_random_string() is called from cmd_funcs.c. Several other functions are updated to cope with the new ID format.
