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2021-03-01Update copyright yearAllan McRae1-1/+1
Signed-off-by: Allan McRae <allan@archlinux.org>
2020-07-07Move signature payload creation to download engineAnatol Pomozov1-1/+3
Until now callee of ALPM download functionality has been in charge of payload creation both for the main file (e.g. *.pkg) and for the accompanied *.sig file. One advantage of such solution is that all payloads are independent and can be fetched in parallel thus exploiting the maximum level of download parallelism. To build *.sig file url we've been using a simple string concatenation: $requested_url + ".sig". Unfortunately there are cases when it does not work. For example an archlinux.org "Download From Mirror" link looks like this https://www.archlinux.org/packages/core/x86_64/bash/download/ and it gets redirected to some mirror. But if we append ".sig" to the end of the link url and try to download it then archlinux.org returns 404 error. To overcome this issue we need to follow redirects for the main payload first, find the final url and only then append '.sig' suffix. This implies 2 things: - the signature payload initialization need to be moved to dload.c as it is the place where we have access to the resolved url - *.sig is downloaded serially with the main payload and this reduces level of parallelism Move *.sig payload creation to dload.c. Once the main payload is fetched successfully we check if the callee asked to download the accompanied signature. If yes - create a new payload and add it to mcurl. *.sig payload does not use server list of the main payload and thus does not support mirror failover. *.sig file comes from the same server as the main payload. Refactor event loop in curl_multi_download_internal() a bit. Instead of relying on curl_multi_check_finished_download() to return number of new payloads we simply rerun the loop iteration one more time to check if there are any active downloads left. Signed-off-by: Anatol Pomozov <anatol.pomozov@gmail.com> Signed-off-by: Allan McRae <allan@archlinux.org>
2020-06-26Cleanup the old sequential download codeAnatol Pomozov1-5/+1
All users of _alpm_download() have been refactored to the new API. It is time to remove the old _alpm_download() functionality now. This change also removes obsolete SIGPIPE signal handler functionality (this is a leftover from libfetch days). Signed-off-by: Anatol Pomozov <anatol.pomozov@gmail.com>
2020-06-26Convert '-U pkg1 pkg2' codepath to parallel downloadAnatol Pomozov1-0/+5
Installing remote packages using its URL is an interesting case for ALPM API. Unlike package sync ('pacman -S pkg1 pkg2') '-U' does not deal with server mirror list. Thus _alpm_multi_download() should be able to handle file download for payloads that either have 'fileurl' field or pair of fields ('servers' and 'filepath') set. Signature for alpm_fetch_pkgurl() has changed and it accepts an output list that is populated with filepaths to fetched packages. Signed-off-by: Anatol Pomozov <anatol.pomozov@gmail.com>
2020-05-09Implement multibar UIAnatol Pomozov1-1/+1
Multiplexed download requires ability to draw UI for multiple active progress bars. To implement it we use ANSI codes to move cursor up/down and then redraw the required progress bar. `pacman_multibar_ui.active_downloads` field represents the list of active downloads that correspond to progress bars. `struct pacman_progress_bar` is a data structure for a progress bar. In some cases (e.g. database downloads) we want to keep progress bars in order. In some other cases (package downloads) we want to move completed items to the top of the screen. Function `multibar_move_completed_up` allows to configure such behavior. Per discussion in the maillist we do not want to show download progress for signature files. Signed-off-by: Anatol Pomozov <anatol.pomozov@gmail.com> Signed-off-by: Allan McRae <allan@archlinux.org>
2020-05-09Implement multiplexed download using mCURLAnatol Pomozov1-0/+2
curl_multi_download_internal() is the main loop that creates up to 'ParallelDownloads' easy curl handles, adds them to mcurl and then performs curl execution. This is when the paralled downloads happens. Once any of the downloads complete the function checks its result. In case if the download fails it initiates retry with the next server from payload->servers list. At the download completion all the payload resources are cleaned up. curl_multi_check_finished_download() is essentially refactored version of curl_download_internal() adopted for multi_curl. Once mcurl porting is complete curl_download_internal() will be removed. Signed-off-by: Anatol Pomozov <anatol.pomozov@gmail.com> Signed-off-by: Allan McRae <allan@archlinux.org>
2020-05-09Inline dload_payload->curlerr field into a local variableAnatol Pomozov1-1/+0
dload_payload->curlerr is a field that is used inside curl_download_internal() function only. It can be converted to a local variable. Signed-off-by: Anatol Pomozov <anatol.pomozov@gmail.com> Signed-off-by: Allan McRae <allan@archlinux.org>
2020-05-09Add multi_curl handle to ALPM global contextAnatol Pomozov1-0/+1
To be able to run multiple download in parallel efficiently we need to use curl_multi interface [1]. It introduces a set of APIs over new type of handler 'CURLM'. Create CURLM object at the application start and set it to global ALPM context. The 'single-download' CURL handle moves to payload struct. A new CURL handle is created for each payload with intention to be processed by CURLM. Note that curl_download_internal() is not ported to CURLM interface due to the fact that the function will go away soon. [1] https://curl.haxx.se/libcurl/c/libcurl-multi.html Signed-off-by: Allan McRae <allan@archlinux.org>
2020-05-09Introduce alpm_dbs_update() function for parallel db updatesAnatol Pomozov1-0/+5
This is an equivalent of alpm_db_update but for multiplexed (parallel) download. The difference is that this function accepts list of databases to update. And then ALPM internals download it in parallel if possible. Add a stub for _alpm_multi_download the function that will do parallel payloads downloads in the future. Introduce dload_payload->filepath field that contains url path to the file we download. It is like fileurl field but does not contain protocol/server part. The rationale for having this field is that with the curl multidownload the server retry logic is going to move to a curl callback. And the callback needs to be able to reconstruct the 'next' fileurl. One will be able to do it by getting the next server url from 'servers' list and then concat with filepath. Once the 'parallel download' refactoring is over 'fileurl' field will go away. Signed-off-by: Anatol Pomozov <anatol.pomozov@gmail.com> Signed-off-by: Allan McRae <allan@archlinux.org>
2020-02-10build-aux/update-copyright 2019 2020Allan McRae1-1/+1
Signed-off-by: Allan McRae <allan@archlinux.org>
2019-10-23Update copyright yearsAllan McRae1-1/+1
make update-copyright OLD=2018 NEW=2019 Signed-off-by: Allan McRae <allan@archlinux.org>
2018-05-14Remove all modelines from the projectEli Schwartz1-2/+0
Many of these are pointless (e.g. there is no need to explicitly turn on spellchecking and language dictionaries for the manpages by default). The only useful modelines are the ones enforcing the project coding standards for indentation style (and "maybe" filetype/syntax, but everything except the asciidoc manpages and makepkg.conf is already autodetected), and indent style can be applied more easily with .editorconfig Signed-off-by: Eli Schwartz <eschwartz@archlinux.org> Signed-off-by: Allan McRae <allan@archlinux.org>
2018-03-14Update coyrights for 2018Allan McRae1-1/+1
make update-copyright OLD=2017 NEW=201 Signed-off-by: Allan McRae <allan@archlinux.org>
2018-01-06dload: ensure callback is always initialized onceAndrew Gregory1-0/+1
Frontends rely on an initialization call for setup between downloads. Checking for intialization after checking for a completed download can skip initialization in cases where files are small enough to be downloaded all at once (FS#56408). Relying on previous download size can result in multiple initializations if there are multiple non-transfer events prior to the download starting (fS#56468). Introduce a new cb_initialized variable to the payload struct and use it to ensure that the callback is initialized exactly once prior to any actual events. Fixes FS#56408, FS#56468 Signed-off-by: Andrew Gregory <andrew.gregory.8@gmail.com> Signed-off-by: Allan McRae <allan@archlinux.org>
2017-01-04Update copyright yearsAllan McRae1-1/+1
Signed-off-by: Allan McRae <allan@archlinux.org>
2016-12-05Parametrise the different ways in which the payload is resetMartin Kühne1-0/+1
In FS#43434, Downloads which fail and are restarted on a different server will resume and may display a negative download speed. The payload's progress in libalpm was not properly reset which ultimately caused terminal noise because the line width calculation assumes positive download speeds. This patch fixes the incomplete reset of the payload by mimicing what be_sync.c:alpm_db_update() does over in sync.c:download_single_file(). The new dload.c:_alpm_dload_payload_reset_for_retry() extends beyond the current behavior by updating initial_size and prevprogress for this case. This makes pacman reset the progress properly in the next invocation of the callback and display positive download speeds. Fixes FS#43434. Signed-off-by: Martin Kühne <mysatyre@gmail.com> Signed-off-by: Allan McRae <allan@archlinux.org>
2016-09-25Do not #define _RESERVED_IDENTIFIERSIvy Foster1-3/+3
Signed-off-by: Ivy Foster <ivy.foster@gmail.com> Signed-off-by: Allan McRae <allan@archlinux.org>
2016-01-04Update copyright years for 2016Allan McRae1-1/+1
make update-copyright OLD=2015 NEW=2016 Signed-off-by: Allan McRae <allan@archlinux.org>
2015-02-01Update copyright notices for 2015Allan McRae1-1/+1
Signed-off-by: Allan McRae <allan@archlinux.org>
2014-10-19dload: mark final_url as constChristian Hesse1-1/+1
Signed-off-by: Allan McRae <allan@archlinux.org>
2014-01-28Remove ts and sw from vim modeline when noet is setFlorian Pritz1-1/+1
Forcing vim users to view files with a tabstop of 2 seems really unnecessary when noet is set. I find it much easier to read code with ts=4 and I dislike having to override the modeline by hand. Command run: find . -type f -exec sed -i '/vim.* noet/s# ts=2 sw=2##' {} + Signed-off-by: Florian Pritz <bluewind@xinu.at> Signed-off-by: Allan McRae <allan@archlinux.org>
2014-01-06Minor struct member reordering for packing concernsDan McGee1-2/+2
Noticed using clang and `-Wpadded`. Signed-off-by: Dan McGee <dan@archlinux.org> Signed-off-by: Allan McRae <allan@archlinux.org>
2014-01-06Update copyright years for 2014Allan McRae1-1/+1
Signed-off-by: Allan McRae <allan@archlinux.org>
2013-09-18dload: avoid renaming files downloaded via sync operationsChristian Hesse1-0/+1
If the server redirects from ${repo}.db to ${repo}.db.tar.gz pacman gets this wrong: It saves to new filename and fails when accessing ${repo}.db. We need the remote filename only when downloading remote files with pacman's -U operation. This introduces a new field 'trust_remote_name' to payload. If set pacman downloads to the filename given by the server. The field trust_remote_name is set in alpm_fetch_pkgurl(). Fixes FS#36791 ([pacman] downloads to wrong filename with redirect). [dave: remove redundant assignment leading to memory leak] Signed-off-by: Allan McRae <allan@archlinux.org>
2013-01-29dload: pass back the effective URL to callers of _alpm_downloadDave Reisner1-1/+1
I suspect that eventually we're going to end up returning a pointer to an allocated struct to describe the download result, but that's for another patch when the need arises... Fixes FS#33508. Signed-off-by: Dave Reisner <dreisner@archlinux.org> Signed-off-by: Allan McRae <allan@archlinux.org>
2013-01-17dload: avoid showing progress bars on some redirectsDave Reisner1-0/+1
RFC 2616 doesn't forbid a 301 or 302 repsonse from having a body, and servers exist in the wild that show this behavior. In order to prevent pacman from showing a progress bar when we aren't actually downloading a package (and merely following one of these pain in the butt redirects), capture the server response code in the response header, rather than waiting to peel it off the handle after the download has finished. Signed-off-by: Dave Reisner <dreisner@archlinux.org> Reported-by: Alexandre Filgueira <alexfilgueira@cinnarch.com> Signed-off-by: Allan McRae <allan@archlinux.org>
2013-01-03Update copyright year for 2013Allan McRae1-1/+1
Signed-off-by: Allan McRae <allan@archlinux.org>
2012-02-20Update copyright yearsAllan McRae1-1/+1
Add 2012 to the copyright range for all libalpm and pacman source files. Signed-off-by: Allan McRae <allan@archlinux.org> Signed-off-by: Dan McGee <dan@archlinux.org>
2011-10-22sync: extract build_payload() method from find_dl_candidatesDan McGee1-1/+1
This is done by both the delta and regular file code, so we can extract a little helper method. Done mostly to satisfy my "why are we repeating code here" itch. Signed-off-by: Dan McGee <dan@archlinux.org>
2011-10-17dload: add pointer to server list for each payloadDave Reisner1-0/+1
Signed-off-by: Dave Reisner <dreisner@archlinux.org> Signed-off-by: Dan McGee <dan@archlinux.org>
2011-10-14Merge branch 'maint'Dan McGee1-0/+2
2011-10-14Add missing #ifdef around cURL error code in download structDan McGee1-0/+2
Thanks to Eduardo Tongson on the mailing list. Signed-off-by: Dan McGee <dan@archlinux.org>
2011-10-12Introduce alpm_time_t typeDan McGee1-2/+0
This will always be a 64-bit signed integer rather than the variable length time_t type. Dates beyond 2038 should be fully supported in the library; the frontend still lags behind because 32-bit platforms provide no localtime64() or equivalent function to convert from an epoch value to a broken down time structure. Signed-off-by: Dan McGee <dan@archlinux.org>
2011-09-29move prevprogress onto payload handleDave Reisner1-0/+1
This is a poor place for it, and it will likely move again in the future, but it's better to have it here than as a static variable. Initialization of this variable is now no longer necessary as its zeroed on creation of the payload struct. Signed-off-by: Dave Reisner <dreisner@archlinux.org> Signed-off-by: Dan McGee <dan@archlinux.org>
2011-09-28Refactor download payload reset and freeDan McGee1-1/+1
This was done to squash a memory leak in the sync database download code. When we downloaded a database and then reused the payload struct, we could find ourselves calling get_fullpath() for the signatures and overwriting non-freed values we had left over from the database download. Refactor the payload_free function into a payload_reset function that we can call that does NOT free the payload itself, so we can reuse payload structs. This also allows us to move the payload to the stack in some call paths, relieving us of the need to alloc space. Signed-off-by: Dan McGee <dan@archlinux.org>
2011-09-28Initialize cURL library on first useDan McGee1-0/+1
Rather than always initializing it on any handle creation. There are several frontend operations (search, info, etc.) that never need the download code, so spending time initializing this every single time is a bit silly. This makes it a bit more like the GPGME code init path. Signed-off-by: Dan McGee <dan@archlinux.org>
2011-09-28Fix memory leak in download payload->remote_nameDan McGee1-1/+1
In the sync code, we explicitly allocated a string for this field, while in the dload code itself it was filled in with a pointer to another string. This led to a memory leak in the sync download case. Make remote_name non-const and always explicitly allocate it. This patch ensures this as well as uses malloc + snprintf (rather than calloc) in several codepaths, and eliminates the only use of PATH_MAX in the download code. Signed-off-by: Dan McGee <dan@archlinux.org>
2011-08-25Use off_t rather than double where possibleDan McGee1-2/+2
Beautiful of libcurl to use floating point types for what are never fractional values. We can do better, and we usually want these values in their integer form anyway. Signed-off-by: Dan McGee <dan@archlinux.org>
2011-08-22dload: add open_mode to payload structDave Reisner1-0/+1
This is a precursor to a following patch which will move the setting of options to a separate function. With the open mode as part of the struct, we can avoid modifying stack allocated variables. Signed-off-by: Dave Reisner <dreisner@archlinux.org> Signed-off-by: Dan McGee <dan@archlinux.org>
2011-08-22dload: rename cd_filename to content_disp_nameDave Reisner1-1/+1
This is more in line with the menagerie of file name members that we now have on the payload struct. Signed-off-by: Dave Reisner <dreisner@archlinux.org> Signed-off-by: Dan McGee <dan@archlinux.org>
2011-08-22dload: move tempfile and destfile to payload structDave Reisner1-0/+2
These are private to the download operation already, so glob them onto the struct. This is an ugly rename patch, with the only logical change being that destfile and tempfile are now freed by the payload_free function. Signed-off-by: Dave Reisner <dreisner@archlinux.org> Signed-off-by: Dan McGee <dan@archlinux.org>
2011-08-20dload: rename payload->filename to payload->remote_nameDave Reisner1-1/+1
This is a far more accurate description of what this is, since it's more than likely not really a filename at all, but the name after a final slash on a URL. Signed-off-by: Dave Reisner <dreisner@archlinux.org> Signed-off-by: Dan McGee <dan@archlinux.org>
2011-08-19dload: add 'unlink_on_fail' to payload structDave Reisner1-0/+1
Let callers of _alpm_download state whether we should delete on fail, rather than inferring it from context. We still override this decision and always unlink when a temp file is used. Signed-off-by: Dave Reisner <dreisner@archlinux.org> Signed-off-by: Dan McGee <dan@archlinux.org>
2011-07-06absorb fileinfo struct into dload_payloadDave Reisner1-8/+2
This transitional struct becomes delicious noms for dload_payload. Signed-off-by: Dave Reisner <dreisner@archlinux.org>
2011-07-06absorb some _alpm_download params into payload structDave Reisner1-3/+6
Restore some sanity to the number of arguments passed to _alpm_download and curl_download_internal. Signed-off-by: Dave Reisner <dreisner@archlinux.org>
2011-07-06lib/dload: prevent large file attacksDave Reisner1-2/+11
This means creating a new struct which can pass more descriptive data from the back end sync functions to the downloader. In particular, we're interested in the download size read from the sync DB. When the remote server reports a size larger than this (via a content-length header), abort the transfer. In cases where the size is unknown, we set a hard upper limit of: * 25MiB for a sync DB * 16KiB for a signature For reference, 25MiB is more than twice the size of all of the current binary repos (with files) combined, and 16KiB is a truly gargantuan signature. Signed-off-by: Dave Reisner <dreisner@archlinux.org>
2011-07-06dload: handle irregular URLsDave Reisner1-1/+2
URLs might end with a slash and follow redirects, or could be a generated by a script such as /getpkg.php?id=12345. In both cases, we may have a better filename that we can write to, taken from either content-disposition header, or the effective URL. Specific to the first case, we write to a temporary file of the format 'alpmtmp.XXXXXX', where XXXXXX is randomized by mkstemp(3). Since this is a randomly generated file, we cannot support resuming and the file is unlinked in the event of an interrupt. We also run into the possibility of changing out the filename from under alpm on a -U operation, so callers of _alpm_download can optionally pass a pointer to a *char to be filled in by curl_download_internal with the actual filename we wrote to. Any sync operation will pass a NULL pointer here, as we rely on specific names for packages from a mirror. Fixes FS#22645. Signed-off-by: Dave Reisner <d@falconindy.com>
2011-06-28Rename pmhandle_t to alpm_handle_tAllan McRae1-2/+2
Signed-off-by: Allan McRae <allan@archlinux.org>
2011-06-14Move pm_errno onto the handleDan McGee1-1/+2
This involves some serious changes and a very messy diff, unfortunately. Signed-off-by: Dan McGee <dan@archlinux.org>
2011-04-23libalpm/dload: major refactor of signature downloadingDan McGee1-6/+2
There's a lot of related moving parts here: * Iteration through mirrors is moved back to the calling functions. This allows removal of _alpm_download_single_file and _alpm_download_files. * The download function gets a few more arguments to influence behavior. This allows several different scenarios to customize behavior: - database - database signature (req'd and optional) - package - package via direct URL - package signature via direct URL (req'd and optional) * For databases, we need signatures from the same mirror, so structure the code accordingly. Some-inspiration-from: Dave Reisner <d@falconindy.com> Signed-off-by: Dan McGee <dan@archlinux.org>