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path: root/lib/libalpm/be_sync.c
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2011-07-06lib/dload: prevent large file attacksDave Reisner1-7/+15
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 Reisner1-2/+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>
2011-07-05Allow invalid sync DBs to be returned by the libraryDan McGee1-5/+1
They are placeholders, but important for things like trying to re-sync a database missing a signature. By using the alpm_db_validity() method at the right time, a client can take the appropriate action with these invalid databases as necessary. In pacman's case, we disallow just about anything that involves looking at a sync database outside of an '-Sy' operation (although we do check the validity immediately after). A few operations are still permitted- '-Q' ops that don't touch sync databases as well as '-R'. Signed-off-by: Dan McGee <dan@archlinux.org>
2011-07-05signing: move to new signing verification and return schemeDan McGee1-17/+13
This gives us more granularity than the former Never/Optional/Always trifecta. The frontend still uses these values temporarily but that will be changed in a future patch. * Use 'siglevel' consistenly in method names, 'level' as variable name * The level becomes an enum bitmask value for flexibility * Signature check methods now return a array of status codes rather than a simple integer success/failure value. This allows callers to determine whether things such as an unknown signature are valid. * Specific signature error codes mostly disappear in favor of the above returned status code; pm_errno is now set only to PKG_INVALID_SIG or DB_INVALID_SIG as appropriate. Signed-off-by: Dan McGee <dan@archlinux.org>
2011-07-03Merge remote-tracking branch 'allan/ALPM'Dan McGee1-33/+33
Conflicts: lib/libalpm/be_local.c lib/libalpm/be_package.c lib/libalpm/conflict.c lib/libalpm/diskspace.c lib/libalpm/dload.c lib/libalpm/remove.c
2011-07-03be_sync: make READ_NEXT() a no-arg macroDan McGee1-12/+12
We passed in 'line', but not 'buf.line'. In addition, the macros building off of READ_NEXT() assume variable names anyway. Since we only use these macros in one function, might as well simplify them. Signed-off-by: Dan McGee <dan@archlinux.org>
2011-07-01Prefix _alpm_errno_t members with ALPMAllan McRae1-14/+14
Signed-off-by: Allan McRae <allan@archlinux.org>
2011-07-01Prefix alpm_loglevel_t members with ALPMAllan McRae1-19/+19
Signed-off-by: Allan McRae <allan@archlinux.org>
2011-06-30Make alpm_db_get_sigverify_level() publicDan McGee1-2/+2
Signed-off-by: Dan McGee <dan@archlinux.org>
2011-06-30Add an alpm_db_get_valid() public functionDan McGee1-0/+1
This allows one to check if a database is valid or invalid. Signed-off-by: Dan McGee <dan@archlinux.org>
2011-06-28Rename pmpkg_t to alpm_pkg_tAllan McRae1-7/+7
Signed-off-by: Allan McRae <allan@archlinux.org>
2011-06-28Rename pmdb_t to alpm_db_tAllan McRae1-9/+9
Signed-off-by: Allan McRae <allan@archlinux.org>
2011-06-28Rename pmhandle_t to alpm_handle_tAllan McRae1-3/+3
Signed-off-by: Allan McRae <allan@archlinux.org>
2011-06-24Make sync DB reading a bit more flexibleDan McGee1-62/+66
We can reorganize things a bit to not require reading a directory-only entry first (or at all). This was noticed while working on some pactest improvements, but should be a good step forward anyway. Also make _alpm_splitname() a bit more generic in where it stores the data it parses. Signed-off-by: Dan McGee <dan@archlinux.org>
2011-06-24Don't require a transaction for sync DB updatesDan McGee1-18/+24
Instead, just do the required locking directly in the backend in calls to alpm_db_update(). Signed-off-by: Dan McGee <dan@archlinux.org>
2011-06-24Add a 'valid' flag to the database objectDan McGee1-1/+11
Start by converting all of our flags to a 'status' bitmask (pkgcache status, grpcache status). Add a new 'valid' flag as well. This will let us keep track if the database itself has been marked valid in whatever fashion. For local databases at the moment we ensure there are no depends files; for sync databases we ensure the PGP signature is valid if required/requested. The loading of the pkgcache is prohibited if the database is invalid. Signed-off-by: Dan McGee <dan@archlinux.org>
2011-06-24Move database 'version' check to registration timeDan McGee1-6/+0
This is another step toward doing both local database validation (ensuring we don't have depends files) and sync database validation (via signatures if present) when the database is registered. Signed-off-by: Dan McGee <dan@archlinux.org>
2011-06-24Do database signature checking at load timeDan McGee1-1/+55
This is the ideal place to do it as all clients should be checking the return value and ensuring there are no errors. This is similar to pkg_load(). We also add an additional step of validation after we download a new database; a subsequent '-y' operation can potentially invalidate the original check at registration time. Note that this implementation is still a bit naive; if a signature is invalid it is currently impossible to refresh and re-download the file without manually deleting it first. Similarly, if one downloads a database and the check fails, the database object is still there and can be used. These shortcomings will be addressed in a future commit. Signed-off-by: Dan McGee <dan@archlinux.org>
2011-06-24Prevent segfault when parsing unexpected sync database fileDan McGee1-4/+2
This doesn't fix the real (bigger) problem of failing to parse sync databases without directory entries, but it does prevent the parser from segfaulting when the first desc file encountered did not have a directory entry, among other conditions. Signed-off-by: Dan McGee <dan@archlinux.org>
2011-06-20Documented purpose of be_*.cKerrick Staley1-1/+1
Added a line to the top of each of be_local.c, be_package.c, and be_sync.c indicating their purposes. Signed-off-by: Kerrick Staley <mail@kerrickstaley.com> Signed-off-by: Dan McGee <dan@archlinux.org>
2011-06-14Ensure handle is valid and pm_errno is reset when calling into APIDan McGee1-0/+1
We didn't do due diligence before and ensure prior pm_errno values weren't influencing what happened in further ALPM calls. I observed one case of early setup code setting pm_errno to PM_ERR_WRONG_ARGS and that flag persisting the entire time we were calling library code. Add a new CHECK_HANDLE() macro that does two things: 1) ensures the handle variable passed to it is non-NULL and 2) clears any existing pm_errno flag set on the handle. This macro can replace many places we used the ASSERT(handle != NULL, ...) pattern before. Several other other places only need a simple 'set to zero' of the pm_errno field. Signed-off-by: Dan McGee <dan@archlinux.org>
2011-06-14alpm_db_update(): refactor out sync dir create/checkDan McGee1-22/+31
This was a lot of stuff that can stand by itself for the most part. Signed-off-by: Dan McGee <dan@archlinux.org>
2011-06-14Switch all logging to use handle directlyDan McGee1-18/+20
This is the last user of our global handle object. Once again the diff is large but the functional changes are not. Signed-off-by: Dan McGee <dan@archlinux.org>
2011-06-14Move pm_errno onto the handleDan McGee1-29/+25
This involves some serious changes and a very messy diff, unfortunately. Signed-off-by: Dan McGee <dan@archlinux.org>
2011-06-09Require handle argument to all alpm_option_(get|set)_*() methodsDan McGee1-1/+1
This requires a lot of line changes, but not many functional changes as more often than not our handle variable is already available in some fashion. Signed-off-by: Dan McGee <dan@archlinux.org>
2011-06-08Plug a memory leakDan McGee1-0/+1
Introduced by me in commit cc25576f8b54b3. Signed-off-by: Dan McGee <dan@archlinux.org>
2011-06-03Use standard errno codes in return from _alpm_archive_fgetsDan McGee1-4/+18
This allows us to not require the context (e.g. handle) when calling this function. Also beef up the checks in the two callers of this function to bail if the last return code is not ARCHIVE_EOF, which is the expected value. This requires a change to one of the pactest return codes and the overall result of the test, but results in a much safer operating condition whereby invalid database entries will stop the operation. Signed-off-by: Dan McGee <dan@archlinux.org>
2011-06-03Remove global handle from some package and db codeDan McGee1-7/+3
Signed-off-by: Dan McGee <dan@archlinux.org>
2011-06-03Push down extern handle variable to files that need itDan McGee1-0/+3
This will make the patching process less invasive as we start to remove this variable from all source files. Signed-off-by: Dan McGee <dan@archlinux.org>
2011-06-03Add handle attribute to pmpkg_t structDan McGee1-1/+2
Similar to what we just did for the database; this will make it easy to always know what handle a given package originated from. Signed-off-by: Dan McGee <dan@archlinux.org>
2011-06-03Add handle attribute to pmdb_t structDan McGee1-0/+1
This is the first step in a long process to remove our dependence on the global handle variable we currently share in libalpm, with the goal to make things a bit more thread-safe and re-entrant. Signed-off-by: Dan McGee <dan@archlinux.org>
2011-06-03Remove ALPM_LOG_FUNC macroDan McGee1-7/+0
The usefulness of this is rather limited due to it not being compiled into production builds. When you do choose to see the output, it is often overwhelming and not helpful. The best bet is to use a debugger and/or well-placed fprintf() statements. Signed-off-by: Dan McGee <dan@archlinux.org>
2011-05-05Remove sync DB reregister checkDan McGee1-10/+0
It's your own damn fault if you do this, and this code is remnants from an old time when we weren't very good at coding. Signed-off-by: Dan McGee <dan@archlinux.org>
2011-05-05Merge branch 'maint'Dan McGee1-5/+6
2011-05-05Ensure populate error return codes are consistentDan McGee1-5/+6
It must be -1 to differentiate it from a number of packages loaded count. Signed-off-by: Dan McGee <dan@archlinux.org>
2011-05-05Logging changes during DB loadDan McGee1-0/+2
The switch from FUNCTION to DEBUG was ill-advised inside the local database load. Instead, add a DEBUG level logger to both local and sync database loads that shows the number of packages processed. Signed-off-by: Dan McGee <dan@archlinux.org>
2011-05-04Deal with unused function parameters correctlyAllan McRae1-1/+1
This started off removing the "(void)foo" hacks to work around unused function parameters and ended up fixing every warning generated by -Wunused-parameter. Dan: rename to UNUSED. Signed-off-by: Allan McRae <allan@archlinux.org> Signed-off-by: Dan McGee <dan@archlinux.org>
2011-04-24Rein in the complexity of the signature typeDan McGee1-1/+1
Given that we offer no transparency into the pmpgpsig_t type, we don't really need to expose it outside of the library, and at this point, we don't need it at all. Don't decode anything except when checking signatures. For packages/files not from a sync database, we now just read the signature file directly anyway. Also push the decoding logic down further into the check method so we don't need this hanging out in a less than ideal place. This will make it easier to conditionally compile things down the road. Signed-off-by: Dan McGee <dan@archlinux.org>
2011-04-23libalpm/dload: major refactor of signature downloadingDan McGee1-53/+35
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>
2011-04-22be_sync: use _alpm_db_get_sigverify_level()Dan McGee1-4/+7
Signed-off-by: Dan McGee <dan@archlinux.org>
2011-04-21Rename gpgsig struct fields for clarityDan McGee1-1/+1
Signed-off-by: Dan McGee <dan@archlinux.org>
2011-04-21Header inclusion cleanupDan McGee1-2/+1
This does touch a lot of things, and hopefully doesn't break things on other platforms, but allows us to also clean up a bunch of crud that no longer needs to be there. Signed-off-by: Dan McGee <dan@archlinux.org>
2011-04-05Merge branch 'maint'Dan McGee1-3/+14
Conflicts: lib/libalpm/be_sync.c lib/libalpm/db.c src/pacman/util.c
2011-04-02Fix compatibility with older versions of libarchive.Rémy Oudompheng1-0/+2
There is no reason to not support versions of libarchive that lack ARCHIVE_COMPRESSION_UU. Distributions should work properly without this. Signed-off-by: Rémy Oudompheng <remy@archlinux.org> Signed-off-by: Dan McGee <dan@archlinux.org>
2011-04-01Ensure dbpath is not null when populating sync databaseDan McGee1-3/+12
We didn't do this sanity check before trying to open an archive. If the alpm dbpath wasn't set, the sync database dbpath would be NULL, causing us to hang indefinitely in archive_read_open_filename() rather than erroring out. We already have a corresponding check in local_db_populate(). The following program will test this case, and hangs before this patch without the call to set_dbpath: int main(int argc, char *argv[]) { alpm_initialize(); // alpm_option_set_dbpath("/var/lib/pacman/"); pmdb_t *core = alpm_db_register_sync("core"); pmpkg_t *pkg = alpm_db_get_pkg(core, "pacman"); return 0; } Signed-off-by: Dan McGee <dan@archlinux.org>
2011-04-01Ignore upcoming new values in sync backendDan McGee1-0/+6
PGPSIG and SHA256SUM are new and we can safely ignore them for now if we come across them. Signed-off-by: Dan McGee <dan@archlinux.org>
2011-03-24Do not reuse old signatureAllan McRae1-2/+9
After updating a database, remove the old signature to prevent it being used in validation if the new signature fails to download. Signed-off-by: Allan McRae <allan@archlinux.org>
2011-03-24Download and verify package database signaturesAllan McRae1-6/+38
If signature verification is needed, attempt to download a signature file for a repo when it is updated. Return an error if unable to download signature only when checking is mandatory, or if signature is invalid. TODO: At the moment the database signature is only checked on download. Should we do anything with a database if it fails to be verified to prevent its future usage? Signed-off-by: Allan McRae <allan@archlinux.org>
2011-03-23Actually read PGPSIG field in sync DB codeDan McGee1-0/+2
Signed-off-by: Dan McGee <dan@archlinux.org>
2011-03-23repo-add: add sha256sum values to repo databaseDan McGee1-0/+3
Implements FS#23103. Also modify libalpm so it ignores this value without any warning as we know it is likely to exist. Signed-off-by: Dan McGee <dan@archlinux.org>
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