src


Log

Author Commit Date CI Message
Patrick Steinhardt 83e8a6b3 2018-10-18T16:08:46 util: provide `git__memmem` function Unfortunately, neither the `memmem` nor the `strnstr` functions are part of any C standard but are merely extensions of C that are implemented by e.g. glibc. Thus, there is no standardized way to search for a string in a block of memory with a limited size, and using `strstr` is to be considered unsafe in case where the buffer has not been sanitized. In fact, there are some uses of `strstr` in exactly that unsafe way in our codebase. Provide a new function `git__memmem` that implements the `memmem` semantics. That is in a given haystack of `n` bytes, search for the occurrence of a byte sequence of `m` bytes and return a pointer to the first occurrence. The implementation chosen is the "Not So Naive" algorithm from [1]. It was chosen as the implementation is comparably simple while still being reasonably efficient in most cases. Preprocessing happens in constant time and space, searching has a time complexity of O(n*m) with a slightly sub-linear average case. [1]: http://www-igm.univ-mlv.fr/~lecroq/string/
Edward Thomson f010b66b 2018-10-17T14:33:47 Merge pull request #4849 from libgit2/cmn/expose-gitfile-check path: export the dotgit-checking functions
Carlos Martín Nieto 7615794c 2018-10-15T18:08:13 Merge pull request #4845 from pks-t/pks/object-fuzzer Object parsing fuzzer
Carlos Martín Nieto 9b6e4081 2018-10-15T17:08:38 Merge commit 'afd10f0' (Follow 308 redirects)
Carlos Martín Nieto 05e54e00 2018-10-15T13:54:17 path: export the dotgit-checking functions These checks are preformed by libgit2 on checkout, but they're also useful for performing checks in applications which do not involve checkout. Expose them under `sys/` as it's still fairly in the weeds even for this library.
Zander Brown afd10f0b 2018-10-13T09:31:20 Follow 308 redirects (as used by GitLab)
Patrick Steinhardt 814e7acb 2018-10-12T12:38:06 Merge pull request #4842 from nelhage/fuzz-config-memory config: Port config_file_fuzzer to the new in-memory backend.
Nelson Elhage 463c21e2 2018-10-11T13:27:06 Apply code review feedback
Patrick Steinhardt 6562cdda 2018-10-11T12:43:08 object: properly propagate errors on parsing failures When failing to parse a raw object fromits data, we free the partially parsed object but then fail to propagate the error to the caller. This may lead callers to operate on objects with invalid memory, which will sooner or later cause the program to segfault. Fix the issue by passing up the error code returned by `parse_raw`.
Nelson Elhage 2d449a11 2018-10-09T02:42:14 config: Refactor `git_config_backend_from_string` to take a length
Edward Thomson 0cd976c8 2018-10-07T12:00:06 Merge pull request #4830 from pks-t/pks/diff-stats-rename-common diff_stats: use git's formatting of renames with common directories
Anders Borum 475db39b 2018-10-06T12:58:06 ignore unsupported http authentication schemes auth_context_match returns 0 instead of -1 for unknown schemes to not fail in situations where some authentication schemes are supported and others are not. apply_credentials is adjusted to handle auth_context_match returning 0 without producing authentication context.
Patrick Steinhardt a8d447f6 2018-10-05T20:13:34 Merge pull request #4837 from pks-t/cmn/reject-option-submodule-url-path submodule: ignore path and url attributes if they look like options
Patrick Steinhardt ce8803a2 2018-10-05T20:03:38 Merge pull request #4836 from pks-t/pks/smart-packets Smart packet security fixes
Carlos Martín Nieto c8ca3cae 2018-10-05T11:47:39 submodule: ignore path and url attributes if they look like options These can be used to inject options in an implementation which performs a recursive clone by executing an external command via crafted url and path attributes such that it triggers a local executable to be run. The library is not vulnerable as we do not rely on external executables but a user of the library might be relying on that so we add this protection. This matches this aspect of git's fix for CVE-2018-17456.
Patrick Steinhardt d06d4220 2018-10-05T10:56:02 config_file: properly ignore includes without "path" value In case a configuration includes a key "include.path=" without any value, the generated configuration entry will have its value set to `NULL`. This is unexpected by the logic handling includes, and as soon as we try to calculate the included path we will unconditionally dereference that `NULL` pointer and thus segfault. Fix the issue by returning early in both `parse_include` and `parse_conditional_include` in case where the `file` argument is `NULL`. Add a test to avoid future regression. The issue has been found by the oss-fuzz project, issue 10810.
Patrick Steinhardt e5090ee3 2018-10-04T11:19:28 diff_stats: use git's formatting of renames with common directories In cases where a file gets renamed such that the directories containing it previous and after the rename have a common prefix, then git will avoid printing this prefix twice and instead format the rename as "prefix/{old => new}". We currently didn't do anything like that, but simply printed "prefix/old -> prefix/new". Adjust our behaviour to instead match upstream. Adjust the test for this behaviour to expect the new format.
Patrick Steinhardt 1bc5b05c 2018-10-03T16:17:21 smart_pkt: do not accept callers passing in no line length Right now, we simply ignore the `linelen` parameter of `git_pkt_parse_line` in case the caller passed in zero. But in fact, we never want to assume anything about the provided buffer length and always want the caller to pass in the available number of bytes. And in fact, checking all the callers, one can see that the funciton is never being called in case where the buffer length is zero, and thus we are safe to remove this check.
Patrick Steinhardt c05790a8 2018-08-09T11:16:15 smart_pkt: return parsed length via out-parameter The `parse_len` function currently directly returns the parsed length of a packet line or an error code in case there was an error. Instead, convert this to our usual style of using the return value as error code only and returning the actual value via an out-parameter. Thus, we can now convert the output parameter to an unsigned type, as the size of a packet cannot ever be negative. While at it, we also move the check whether the input buffer is long enough into `parse_len` itself. We don't really want to pass around potentially non-NUL-terminated buffers to functions without also passing along the length, as this is dangerous in the unlikely case where other callers for that function get added. Note that we need to make sure though to not mess with `GIT_EBUFS` error codes, as these indicate not an error to the caller but that he needs to fetch more data.
Patrick Steinhardt 0b3dfbf4 2018-08-09T11:13:59 smart_pkt: reorder and rename parameters of `git_pkt_parse_line` The parameters of the `git_pkt_parse_line` function are quite confusing. First, there is no real indicator what the `out` parameter is actually all about, and it's not really clear what the `bufflen` parameter refers to. Reorder and rename the parameters to make this more obvious.
Patrick Steinhardt 5fabaca8 2018-08-09T11:04:42 smart_pkt: fix buffer overflow when parsing "unpack" packets When checking whether an "unpack" packet returned the "ok" status or not, we use a call to `git__prefixcmp`. In case where the passed line isn't properly NUL terminated, though, this may overrun the line buffer. Fix this by using `git__prefixncmp` instead.
Patrick Steinhardt b5ba7af2 2018-08-09T11:03:37 smart_pkt: fix "ng" parser accepting non-space character When parsing "ng" packets, we blindly assume that the character immediately following the "ng" prefix is a space and skip it. As the calling function doesn't make sure that this is the case, we can thus end up blindly accepting an invalid packet line. Fix the issue by using `git__prefixncmp`, checking whether the line starts with "ng ".
Patrick Steinhardt a9f1ca09 2018-08-09T11:01:00 smart_pkt: fix buffer overflow when parsing "ok" packets There are two different buffer overflows present when parsing "ok" packets. First, we never verify whether the line already ends after "ok", but directly go ahead and also try to skip the expected space after "ok". Second, we then go ahead and use `strchr` to scan for the terminating newline character. But in case where the line isn't terminated correctly, this can overflow the line buffer. Fix the issues by using `git__prefixncmp` to check for the "ok " prefix and only checking for a trailing '\n' instead of using `memchr`. This also fixes the issue of us always requiring a trailing '\n'. Reported by oss-fuzz, issue 9749: Crash Type: Heap-buffer-overflow READ {*} Crash Address: 0x6310000389c0 Crash State: ok_pkt git_pkt_parse_line git_smart__store_refs Sanitizer: address (ASAN)
Patrick Steinhardt bc349045 2018-08-09T10:38:10 smart_pkt: fix buffer overflow when parsing "ACK" packets We are being quite lenient when parsing "ACK" packets. First, we didn't correctly verify that we're not overrunning the provided buffer length, which we fix here by using `git__prefixncmp` instead of `git__prefixcmp`. Second, we do not verify that the actual contents make any sense at all, as we simply ignore errors when parsing the ACKs OID and any unknown status strings. This may result in a parsed packet structure with invalid contents, which is being silently passed to the caller. This is being fixed by performing proper input validation and checking of return codes.
Patrick Steinhardt 5edcf5d1 2018-08-09T10:57:06 smart_pkt: adjust style of "ref" packet parsing function While the function parsing ref packets doesn't have any immediately obvious buffer overflows, it's style is different to all the other parsing functions. Instead of checking buffer length while we go, it does a check up-front. This causes the code to seem a lot more magical than it really is due to some magic constants. Refactor the function to instead make use of the style of other packet parser and verify buffer lengths as we go.
Patrick Steinhardt 786426ea 2018-08-09T10:46:58 smart_pkt: check whether error packets are prefixed with "ERR " In the `git_pkt_parse_line` function, we determine what kind of packet a given packet line contains by simply checking for the prefix of that line. Except for "ERR" packets, we always only check for the immediate identifier without the trailing space (e.g. we check for an "ACK" prefix, not for "ACK "). But for "ERR" packets, we do in fact include the trailing space in our check. This is not really much of a problem at all, but it is inconsistent with all the other packet types and thus causes confusion when the `err_pkt` function just immediately skips the space without checking whether it overflows the line buffer. Adjust the check in `git_pkt_parse_line` to not include the trailing space and instead move it into `err_pkt` for consistency.
Patrick Steinhardt 40fd84cc 2018-08-09T10:46:26 smart_pkt: explicitly avoid integer overflows when parsing packets When parsing data, progress or error packets, we need to copy the contents of the rest of the current packet line into the flex-array of the parsed packet. To keep track of this array's length, we then assign the remaining length of the packet line to the structure. We do have a mismatch of types here, as the structure's `len` field is a signed integer, while the length that we are assigning has type `size_t`. On nearly all platforms, this shouldn't pose any problems at all. The line length can at most be 16^4, as the line's length is being encoded by exactly four hex digits. But on a platforms with 16 bit integers, this assignment could cause an overflow. While such platforms will probably only exist in the embedded ecosystem, we still want to avoid this potential overflow. Thus, we now simply change the structure's `len` member to be of type `size_t` to avoid any integer promotion.
Patrick Steinhardt 4a5804c9 2018-08-09T10:36:44 smart_pkt: honor line length when determining packet type When we parse the packet type of an incoming packet line, we do not verify that we don't overflow the provided line buffer. Fix this by using `git__prefixncmp` instead and passing in `len`. As we have previously already verified that `len <= linelen`, we thus won't ever overflow the provided buffer length.
Anders Borum b36cc7a4 2018-09-27T11:18:00 fix check if blob is uninteresting when inserting tree to packbuilder Blobs that have been marked as uninteresting should not be inserted into packbuilder when inserting a tree. The check as to whether a blob was uninteresting looked at the status for the tree itself instead of the blob. This could cause significantly larger packfiles.
Carlos Martín Nieto 0530d7d9 2018-09-28T18:04:23 Merge pull request #4767 from pks-t/pks/config-mem In-memory configuration
Patrick Steinhardt 60ebc137 2018-08-10T14:53:09 config_entries: abstract away retrieval of config entries The code accessing config entries in the `git_config_entries` structure is still much too intimate with implementation details, directly accessing the maps and handling indices. Provide two new functions to get config entries from the internal map structure to decouple the interfaces and use them in the config file code. The function `git_config_entries_get` will simply look up the entry by name and, in the case of a multi-value, return the last occurrence of that entry. The second function, `git_config_entries_get_unique`, will only return an entry if it is unique and not included via another configuration file. This one is required to properly implement write operations for single entries, as we refuse to write to or delete a single entry if it is not clear which one was meant.
Patrick Steinhardt fb8a87da 2018-08-10T14:50:15 config_entries: rename functions and structure The previous commit simply moved all code that is required to handle config entries to a new module without yet adjusting any of the function and structure names to help readability. We now rename things accordingly to have a common "git_config_entries" entries instead of the old "diskfile_entries" one.
Patrick Steinhardt 04f57d51 2018-08-10T13:33:02 config_entries: pull out implementation of entry store The configuration entry store that is used for configuration files needs to keep track of all entries in two different structures: - a singly linked list is being used to be able to iterate through configuration files in the order they have been found - a string map is being used to efficiently look up configuration entries by their key This store is thus something that may be used by other, future backends as well to abstract away implementation details and iteration over the entries. Pull out the necessary functions from "config_file.c" and moves them into their own "config_entries.c" module. For now, this is simply moving over code without any renames and/or refactorings to help reviewing.
Patrick Steinhardt d75bbea1 2018-08-10T14:35:23 config_file: remove unnecessary snapshot indirection The implementation for config file snapshots has an unnecessary redirection from `config_snapshot` to `git_config_file__snapshot`. Inline the call to `git_config_file__snapshot` and remove it.
Patrick Steinhardt b944e137 2018-08-10T13:03:33 config: rename "config_file.h" to "config_backend.h" The header "config_file.h" has a list of inline-functions to access the contents of a config backend without directly messing with the struct's function pointers. While all these functions are called "git_config_file_*", they are in fact completely backend-agnostic and don't care whether it is a file or not. Rename all the function to instead be backend-agnostic versions called "git_config_backend_*" and rename the header to match.
Patrick Steinhardt 1aeff5d7 2018-08-10T12:52:18 config: move function normalizing section names into "config.c" The function `git_config_file_normalize_section` is never being used in any file different than "config.c", but it is implemented in "config_file.c". Move it over and make the symbol static.
Patrick Steinhardt a5562692 2018-08-10T12:49:50 config: make names backend-agnostic As a last step to make variables and structures more backend agnostic for our `git_config` structure, rename local variables to not be called `file` anymore.
Patrick Steinhardt 2be39cef 2018-08-10T19:38:57 config: introduce new read-only in-memory backend Now that we have abstracted away how to store and retrieve config entries, it became trivial to implement a new in-memory backend by making use of this. And thus we do so. This commit implements a new read-only in-memory backend that can parse a chunk of memory into a `git_config_backend` structure.
Patrick Steinhardt b78f4ab0 2018-08-16T12:22:03 config_entries: refactor entries iterator memory ownership Right now, the config file code requires us to pass in its backend to the config entry iterator. This is required with the current code, as the config file backend will first create a read-only snapshot which is then passed to the iterator just for that purpose. So after the iterator is getting free'd, the code needs to make sure that the snapshot gets free'd, as well. By now, though, we can easily refactor the code to be more efficient and remove the reverse dependency from iterator to backend. Instead of creating a read-only snapshot (which also requires us to re-parse the complete configuration file), we can simply duplicate the config entries and pass those to the iterator. Like that, the iterator only needs to make sure to free the duplicated config entries, which is trivial to do and clears up memory ownership by a lot.
Patrick Steinhardt d49b1365 2018-08-10T19:01:37 config_entries: internalize structure declarations Access to the config entries is now completely done via the modules function interface and no caller messes with the struct's internals. We can thus completely move the structure declarations into the implementation file so that nobody even has a chance to mess with the members.
Patrick Steinhardt 123e5963 2018-08-10T18:59:59 config_entries: abstract away reference counting Instead of directly calling `git_atomic_inc` in users of the config entries store, provide a `git_config_entries_incref` function to further decouple the interfaces. Convert the refcount to a `git_refcount` structure while at it.
Patrick Steinhardt 5a7e0b3c 2018-08-10T18:49:38 config_entries: abstract away iteration over entries The nice thing about our `git_config_iterator` interfaces is that nobody needs to know anything about the implementation details. All that is required is to obtain the iterator via any backend and then use it by executing generic functions. We can thus completely internalize all the implementation details of how to iterate over entries into the config entries store and simply create such an iterator in our config file backend when we want to iterate its entries. This further decouples the config file backend from the config entries store.
Patrick Steinhardt ba1cd495 2018-09-28T11:10:49 Merge pull request #4784 from tiennou/fix/warnings Some warnings
Patrick Steinhardt 367f6243 2018-09-28T11:04:06 Merge pull request #4803 from tiennou/fix/4802 index: release the snapshot instead of freeing the index
Etienne Samson e0afd1c2 2018-09-26T21:17:39 vector: do not realloc 0-size vectors
Etienne Samson fa48d2ea 2018-09-26T19:15:35 vector: do not malloc 0-length vectors on dup
Etienne Samson be4717d2 2018-09-18T12:12:06 path: fix "comparison always true" warning
Etienne Samson 21496c30 2018-03-30T00:20:23 stransport: fix a warning on iOS "warning: values of type 'OSStatus' should not be used as format arguments; add an explicit cast to 'int' instead [-Wformat]"
Patrick Steinhardt a54043b7 2018-09-21T15:32:18 Merge pull request #4794 from marcin-krystianc/mkrystianc/prune_perf git_remote_prune to be O(n * logn)
Patrick Steinhardt 83733aeb 2018-08-10T12:43:21 config: rename `file_internal` and its `file` member Same as with the previous commit, the `file_internal` struct is used to keep track of all the backends that are added to a `git_config` struct. Rename it to `backend_internal` and rename its `file` member to `backend` to make the implementation more backend-agnostic.
Patrick Steinhardt 633cf40c 2018-08-10T12:39:17 config: rename `files` vector to `backends` Originally, the `git_config` struct is a collection of all the parsed configuration files from different scopes (system-wide config, user-specific config as well as the repo-specific config files). Historically, we didn't and don't yet have any other configuration backends than the one for files, which is why the field holding the config backends is called `files`. But in fact, nothing dictates that the vector of backends actually holds file backends only, as they are generic and custom backends can be implemented by users. Rename the member to be called `backends` to clarify that there is nothing specific to files here.
Patrick Steinhardt b9affa32 2018-08-10T19:23:00 config_parse: avoid unused static declared values The variables `git_config_escaped` and `git_config_escapes` are both defined as static const character pointers in "config_parse.h". In case where "config_parse.h" is included but those two variables are not being used, the compiler will thus complain about defined but unused variables. Fix this by declaring them as external and moving the actual initialization to the C file. Note that it is not possible to simply make this a #define, as we are indexing into those arrays.
Patrick Steinhardt 0b9c68b1 2018-08-16T14:10:58 submodule: fix submodule names depending on config-owned memory When populating the list of submodule names, we use the submodule configuration entry's name as the key in the map of submodule names. This creates a hidden dependency on the liveliness of the configuration that was used to parse the submodule, which is fragile and unexpected. Fix the issue by duplicating the string before writing it into the submodule name map.
Edward Thomson e181a649 2018-09-18T03:03:03 Merge pull request #4809 from libgit2/cmn/revwalk-sign-regression Fix revwalk limiting regression
Carlos Martín Nieto 12a1790d 2018-09-17T14:49:46 revwalk: only check the first commit in the list for an earlier timestamp This is not a big deal, but it does make us match git more closely by checking only the first. The lists are sorted already, so there should be no functional difference other than removing a possible check from every iteration in the loop.
Carlos Martín Nieto 46f35127 2018-09-17T14:39:58 revwalk: use the max value for a signed integer When porting, we overlooked that the difference between git's and our's time representation and copied their way of getting the max value. Unfortunately git was using unsigned integers, so `~0ll` does correspond to their max value, whereas for us it corresponds to `-1`. This means that we always consider the last date to be smaller than the current commit's and always think commits are interesting. Change the initial value to the macro that gives us the maximum value on each platform so we can accurately consider commits interesting or not.
Edward Thomson 44291868 2018-09-12T10:53:03 path validation: `char` is not signed by default. ARM treats its `char` type as `unsigned type` by default; as a result, testing a `char` value as being `< 0` is always false. This is a warning on ARM, which is promoted to an error given our use of `-Werror`. Per ISO 9899:199, section "6.2.5 Types": > The three types char, signed char, and unsigned char are collectively > called the character types. The implementation shall define char to > have the same range, representation, and behavior as either signed > char or unsigned char. > ... > Irrespective of the choice made, char is a separate type from the other > two and is not compatible with either.
Etienne Samson c70713d6 2018-09-11T15:53:35 index: release the snapshot instead of freeing the index Previously we would assert in index_free because the reader incrementation would not be balanced. Release the snapshot normally, so the variable gets decremented before the index is freed.
Patrick Steinhardt 55d354d8 2018-09-07T13:20:33 Merge pull request #4785 from tiennou/fix/cleanup-remote remote: store the connection data in a private struct
Etienne Samson 1c176883 2018-09-07T10:36:15 remote: store the connection data in a private struct This makes it easier to pass connection-related options around (proxy & custom headers for now). This fixes a bug in git_push_finish, which didn't reuse the provided proxy if the connection closed between the call to `git_remote_push` and the finish step.
Patrick Steinhardt f2694635 2018-09-06T14:17:54 config_file: fix quadratic behaviour when adding config multivars In case where we add multiple configuration entries with the same key to a diskfile backend, we always need to iterate the list of this key to find the last entry due to the list being a singly-linked list. This is obviously quadratic behaviour, and this has sure enough been found by oss-fuzz by generating a configuration file with 50k lines, where most of them have the same key. While the issue will not arise with "sane" configuration files, an adversary may trigger it by providing a crafted ".gitmodules" file, which is delivered as part of the repo and also parsed by the configuration parser. The fix is trivial: store a pointer to the last entry of the list in its head. As there are only two locations now where we append to this data structure, mainting this pointer is trivial, too. We can also optimize retrieval of a single value via `config_get`, where we previously had to chase the `next` pointer to find the last entry that was added. Using our configuration file fozzur with a corpus that has a single file with 50000 "-=" lines previously took around 21s. With this optimization the same file scans in about 0.053s, which is a nearly 400-fold improvement. But in most cases with a "normal" amount of same-named keys it's not going to matter anyway.
Patrick Steinhardt 695067f7 2018-09-06T11:54:01 Merge pull request #4792 from nelhage/multiline-leak config: Fix a leak parsing multi-line config entries
bisho d22cd1f4 2018-09-05T11:49:13 Prevent heap-buffer-overflow When running repack while doing repo writes, `packfile_load__cb()` can see some temporary files in the directory that are bigger than the usual, and makes `memcmp` overflow on the `p->pack_name` string. ASAN detected this. This just uses `strncmp`, that should not have any performance impact and is safe for comparing strings of different sizes. ``` ERROR: AddressSanitizer: heap-buffer-overflow on address 0x61200001a3f3 at pc 0x7f4a9e1976ec bp 0x7ffc1f80e100 sp 0x7ffc1f80d8b0 READ of size 89 at 0x61200001a3f3 thread T0 SCARINESS: 26 (multi-byte-read-heap-buffer-overflow) #0 0x7f4a9e1976eb in __interceptor_memcmp.part.78 (/build/cfgr-admin#link-tree/libtools_build_sanitizers_asan-ubsan-py.so+0xcf6eb) #1 0x7f4a518c5431 in packfile_load__cb /build/libgit2/0.27.0/src/libgit2-0.27.0/src/odb_pack.c:213 #2 0x7f4a518d9582 in git_path_direach /build/libgit2/0.27.0/src/libgit2-0.27.0/src/path.c:1134 #3 0x7f4a518c58ad in pack_backend__refresh /build/libgit2/0.27.0/src/libgit2-0.27.0/src/odb_pack.c:347 #4 0x7f4a518c1b12 in git_odb_refresh /build/libgit2/0.27.0/src/libgit2-0.27.0/src/odb.c:1511 #5 0x7f4a518bff5f in git_odb__freshen /build/libgit2/0.27.0/src/libgit2-0.27.0/src/odb.c:752 #6 0x7f4a518c17d4 in git_odb_stream_finalize_write /build/libgit2/0.27.0/src/libgit2-0.27.0/src/odb.c:1415 #7 0x7f4a51b9d015 in Repository_write /build/pygit2/0.27.0/src/pygit2-0.27.0/src/repository.c:509 ```
Patrick Steinhardt bc63e1ef 2018-09-03T10:49:46 config_parse: refactor error handling when parsing multiline variables The current error handling for the multiline variable parser is a bit fragile, as each error condition has its own code to clear memory. Instead, unify error handling as far as possible to avoid this repetitive code. While at it, make use of `GITERR_CHECK_ALLOC` to correctly handle OOM situations and verify that the buffer we print into does not run out of memory either.
Marcin Krystianc bfec6526 2018-09-02T11:38:43 git_remote_prune to be O(n * logn)
Nelson Elhage 38b85255 2018-09-01T03:50:26 config: Fix a leak parsing multi-line config entries
Patrick Steinhardt 2054fe50 2018-08-30T12:41:15 Merge pull request #4781 from nelhage/multiline-loop config: convert unbounded recursion into a loop
Edward Thomson df2f276e 2018-08-26T13:22:55 Merge pull request #4765 from tiennou/fix/macos-qsort_r util: make the qsort_r check work on macOS
Edward Thomson 85eb2cb6 2018-08-26T11:33:42 Merge pull request #4727 from libgit2/cmn/null-oid-existing-tree tree: accept null ids in existing trees when updating
Edward Thomson 50186ce8 2018-08-26T11:26:45 Merge pull request #4374 from pks-t/pks/pack-file-verify Pack file verification
Nelson Elhage a03113e8 2018-08-25T17:04:39 config: convert unbounded recursion into a loop
Etienne Samson 1a9cc182 2018-08-17T15:56:30 util: make the qsort_r check work on macOS This performs a compile-check by using CMake support, to differentiate the GNU version from the BSD version of qsort_r. Module taken from 4f252abea5f1d17c60f6ff115c9c44cc0b6f1df6, which I've checked against CMake 2.8.11.
Patrick Steinhardt 9a193102 2018-08-24T11:01:39 Merge pull request #4774 from tiennou/fix/clang-analyzer Coverity flavored clang analyzer fixes
Patrick Steinhardt 503af775 2018-08-24T10:08:09 Merge pull request #4769 from tiennou/fix/worktree-unlock worktree: unlock should return 1 when the worktree isn't locked
Patrick Steinhardt 296cb5e6 2018-08-24T09:07:01 Merge pull request #4763 from cschlack/fix_ng_packets Fix 'invalid packet line' for ng packets containing errors
Etienne Samson 1c949ce1 2018-08-21T02:11:32 transport/http: do not return success if we failed to get a scheme Otherwise we return a NULL context, which will get dereferenced in apply_credentials.
Etienne Samson 22d013b6 2018-08-21T01:55:56 remote: set the error before cleanup Otherwise we'll return stack data to the caller.
Etienne Samson ad95873b 2018-08-21T01:41:05 mailmap: Undefined or garbage value returned to caller In case there was nothing to parse in the buf, we'd return uninitialized stack data.
Etienne Samson aa8cb586 2018-08-21T01:12:11 revwalk: The left operand of '<' is a garbage value At line 594, we do this : if (error < 0) return error; but if nothing was pushed in a GIT_SORT_TIME revwalk, we'd return uninitialized stack data.
Christian Schlack 50dd7fea 2018-08-11T13:06:14 Fix 'invalid packet line' for ng packets containing errors
Etienne Samson 59c2e70e 2018-08-17T00:51:51 worktree: unlock should return 1 when the worktree isn't locked The documentation states that git_worktree_unlock returns 0 on success, and 1 on success if the worktree wasn't locked. Turns out we were returning 0 in any of those cases.
abyss7 581d5492 2018-08-16T22:45:43 Fix leak in index.c
Patrick Steinhardt 622e12c1 2018-08-16T10:35:31 Merge pull request #4749 from neithernut/fix-git__linenlen-ub parse: Do not initialize the content in context to NULL
Patrick Steinhardt 43e7bf78 2018-08-16T10:27:49 Merge pull request #4750 from nelhage/nelhage-config-no-section config_file: Don't crash on options without a section
Patrick Steinhardt c65568d8 2018-08-09T12:48:26 diff: fix OOM on AIX when finding similar deltas in empty diff The function `git_diff_find_similar` keeps a function of cache similarity metrics signatures, whose size depends on the number of deltas passed in via the `diff` parameter. In case where the diff is empty and thus doesn't have any deltas at all, we may end up allocating this cache via a call to `git__calloc(0, sizeof(void *))`. At least on AIX, allocating 0 bytes will result in a `NULL` pointer being returned, which causes us to erroneously return an OOM error. Fix this situation by simply returning early in case where we are being passed an empty diff, as we cannot find any similarities in that case anyway.
Edward Thomson b093bb56 2018-08-06T13:08:15 Merge pull request #4759 from pks-t/pks/ci-werror ci: enable compilation with "-Werror"
Patrick Steinhardt 9ada072e 2018-08-06T13:31:23 Merge pull request #4758 from pks-t/pks/smart-pkt-oob-read smart_pkt: fix potential OOB-read when processing ng packet
Patrick Steinhardt 0fcd0563 2018-08-06T12:00:21 odb: fix use of wrong printf formatters The `git_odb_stream` members `declared_size` and `received_bytes` are both of the type `git_off_t`, which we usually defined to be a 64 bit signed integer. Thus, passing these members to "PRIdZ" formatters is not correct, as they are not guaranteed to accept big enough numbers. Instead, use the "PRId64" formatter, which is able to represent 64 bit signed integers.
Nelson Elhage ec76a1aa 2018-08-05T14:37:08 Add a comment
Nelson Elhage 019409be 2018-08-05T14:25:22 Don't error on missing section, just continue
Nelson Elhage b8a67eda 2018-07-22T23:47:12 Fix a double-free in config parsing
Nelson Elhage c4d7fa95 2018-07-22T23:31:19 config_file: Don't crash on options without a section
Julian Ganz d1bfe614 2018-08-04T19:30:40 parse: Do not initialize the content in context to NULL String operations in libgit2 are supposed to never receive `NULL`, e.g. they are not `NULL`-save. In the case of `git__linenlen()`, invocation with `NULL` leads to undefined behavior. In a `git_parse_ctx` however, the `content` field used in these operations was initialized to `NULL` if the `git_parse_ctx_init()` was called with `NULL` for `content` or `0` for `content_len`. For the latter case, the initialization function even contained some logic for initializing `content` with `NULL`. This commit mitigates triggering undefined behavior by rewriting the logic. Now `content` is always initialized to a non-null buffer. Instead of a null buffer, an empty string is used for denoting an empty buffer.
Edward Thomson ba55592f 2018-08-02T20:34:56 Merge pull request #4743 from Agent00Log/dev/winbugfixes Windows: default credentials / fallback credential handling
Henning Schaffaf ccbffbae 2018-07-30T13:39:21 Only unitialize if the call to CoInitializeEx was successful
Julian Ganz a4ffbae4 2018-07-29T11:46:05 revwalk: remove tautologic condition for hiding a commit The contition cannot be reached with `commit->uninteresting` being true: either a `break` or a `continue` statement will be hit in this case.
Edward Thomson b00a09b0 2018-07-27T20:14:27 Merge pull request #4731 from libgit2/ethomson/wintls_fix winhttp: retry erroneously failing requests
Carlos Martín Nieto f00db9ed 2018-07-27T12:00:37 tree: rename from_tree to validate and clarify the tree in the test
Patrick Steinhardt 42f83840 2018-07-26T15:25:44 Merge pull request #4721 from nelhage/max-objects Add a configurable limit to the max pack size that will be indexed
Patrick Steinhardt d4198d4d 2018-07-26T12:11:34 mbedtls: remove unused variable "cacert" In commit 382ed1e87 (mbedtls: load default CA certificates, 2018-03-29), the function `git_mbedtls_stream_global_init` was refactored to call out to `git_mbedtls__set_cert_location` instead of setting up the certificates itself. The conversion forgot to remove the now-unused "cacert" variable, which is now only getting declared to be free'd at the end of the function. Remove it.