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Commit Graph

42 Commits

Author SHA1 Message Date
David Steele
801e2a5a2c Rename PGBACKREST/BACKREST constants to PROJECT.
This brings consistency between the C and Perl constants and allows for easier code reuse.
2018-11-24 19:05:03 -05:00
David Steele
1dd06a6e46 Add TlsClient object.
A simple, secure TLS client intended to allow access to services that are exposed via HTTPS. We call it TLS instead of SSL because SSL methods are disabled so only TLS connections are allowed.

This object is intended to be used for multiple TLS connections against a service so tlsClientOpen() can be called each time a new connection is needed. By default, an open connection will be reused for pipelining so the user must be prepared to retry their transaction on a read/write error if the server closes the connection before it can be reused. If this behavior is not desirable then tlsClientClose() may be used to ensure that the next call to tlsClientOpen() will create a new TLS session.

Note that tlsClientRead() is non-blocking unless there are *zero* bytes to be read from the session in which case it will raise an error after the defined timeout. In any case the tlsClientRead()/tlsClientWrite()/tlsClientEof() functions should not generally be called directly. Instead use the read/write interfaces available from tlsClientIoRead()/tlsClientIoWrite().
2018-11-21 18:43:25 -05:00
David Steele
bc25db5667 Add interface objects for libxml2.
Add XmlDocument, XmlNode, and XmlNodeList objects as a thin interface layer on libxml2.

This interface is not intended to be comprehensive. Only a few libxml2 capabilities are exposed but more can be added as needed.
2018-11-20 20:40:11 -05:00
David Steele
48d2795f31 Merge crypto/random module into crypto/crypto.
There wasn't enough code to justify a separate module/test and it seems to fit just fine in crypto/crypto.
2018-11-06 20:04:16 -05:00
David Steele
fd14ceb399 Rename posix driver files/functions for consistency.
The posix driver was developed over time and the naming is not very consistent.

Rename the files and functions to work well with other drivers and generally favor longer names since the driver functions are seldom (eventually never) used outside the driver itself.
2018-09-13 18:58:22 -04:00
David Steele
6643afe9a8 Add gzip compression/decompression filters for C. 2018-08-14 14:56:59 -04:00
David Steele
e3ff6b209d Filters can now produce output that differs from input.
This allows filters such as compression, encryption, etc. to be implemented.
2018-08-14 14:21:53 -04:00
David Steele
01aea0c067 Implement filters that do not modify the buffer.
Update cryptoHash to use the new interface.
2018-07-24 21:08:27 -04:00
David Steele
0ac176b722 Abstract IO layer out of the storage layer.
This allows the routines to be used for IO objects that do not have a storage representation.

Implement buffer read and write IO objects.
2018-07-19 16:04:20 -04:00
David Steele
cf889790e6 Error if LibC build is performed outside test environment.
LibC is no longer required for production builds.
2018-07-10 15:39:03 -04:00
David Steele
350b30fa49 Move cryptographic hash functions to C using OpenSSL. 2018-06-11 14:52:26 -04:00
David Steele
064ec757e9 Rename cipher module to the more general crypto. 2018-06-11 10:53:16 -04:00
David Steele
40093f160c Improve efficiency of C library builds now that they are used only for testing. 2018-05-24 14:01:24 -04:00
David Steele
4c7408ea52 Embed exported C functions and Perl modules directly into the pgBackRest executable. 2018-05-22 12:53:08 -04:00
David Steele
52bc073234 Add stack trace macros to all functions.
Low-level functions only include stack trace in test builds while higher-level functions ship with stack trace built-in. Stack traces include all parameters passed to the function but production builds only create the parameter list when the log level is set high enough, i.e. debug or trace depending on the function.
2018-05-18 11:57:32 -04:00
David Steele
bce3d0fe1c Build libc using links rather than referencing the C files in src directly.
The C library builds with different options which should not be reused for the C binary or vice versa.
2018-05-17 17:09:06 -04:00
David Steele
bb8c315cad Storage object improvements.
* Add storageCopy(), storageMove(), and storagePathSync().
* Separate StorageFile object into separate read and write objects.
* Abstract out Posix file read/write objects.
2018-04-23 17:26:27 -04:00
David Steele
6fd0c3dcaa Improved lock implementation written in C.
Now only two types of locks can be taken: archive and backup. Most commands use one or the other but the stanza-* commands acquire both locks. This provides better protection than the old command-based locking scheme.
2018-04-11 09:36:12 -04:00
David Steele
bd25248df0 Abstract Posix storage driver code into a separate module. 2018-04-05 14:48:16 -04:00
David Steele
93fdb98d15 Storage object improvements.
* Convert all functions to variadic functions.
* Enforce read-only storage.
* Add storageLocalWrite() helper function. Add storageExists(), storagePathCreate(), storageRemove(), and storageStat().
* Add StorageFile object and storageOpenRead()/storageOpenWrite().
2018-04-03 12:25:21 -04:00
David Steele
03f1082e86 Improve logging.
Move command begin to C except when it must be called after another command in Perl (e.g. expire after backup). Command begin logs correctly for complex data types like hash and list. Specify which commands will log to file immediately and set the default log level for log messages that are common to all commands. File logging is initiated from C.
2018-03-12 11:03:38 -04:00
David Steele
fda62dfc48 Move Perl option JSON generation to a new module.
Linking exec.c into LibC will not be an option once the perl exec loads the Perl interpreter.
2018-02-14 09:49:01 -05:00
David Steele
1659598cfe Create a master list of errors in build/error.yaml.
The C and Perl errors lists are created automatically by Build.pm so they stay up to date.
2018-02-08 16:11:47 -05:00
David Steele
c3f47bf240 Move config parsing out of Perl tests.
cfgParseTest() is provided in the C library for parsing configs in unit tests.
2018-02-05 12:32:30 -05:00
David Steele
526acca5bd Config parsing implemented in C. 2017-12-22 23:27:49 -05:00
David Steele
5ea1263d8e Run valgrind on all C unit tests.
Also refactor code to make valgrind happy.
2017-12-22 18:36:36 -05:00
David Steele
3b43047e0d Disable -Wclobber compiler warning.
...because it is mostly useless but keep the rest of of -Wextra.
2017-11-19 16:44:33 -05:00
David Steele
bcdfc7d0b5 Enable additional warnings for C builds. 2017-11-06 22:55:34 -05:00
David Steele
8d6a08a32b Library code for repository encryption support. 2017-11-03 13:57:58 -04:00
David Steele
ac542788da Convert configuration definitions from auto-generated functions to auto-generated data structures. 2017-11-02 08:14:13 -04:00
David Steele
55f68ef013 Remove configurable option hints.
db-path was the only option with a hint so the feature seemed wasteful. All missing stanza options now output the same hint without needing configuration.
2017-10-30 10:58:04 -04:00
David Steele
1ef27ec8c2 Add list type for options.
The hash type was being used for lists with an additional flag (`value-hash`) to indicate that it was not really a hash.
2017-10-30 10:50:35 -04:00
David Steele
f4524aeaa9 Add base64 encode/decode. 2017-10-18 11:14:26 -04:00
David Steele
10dfbd90b5 Add C unit test infrastructure. 2017-10-12 12:55:48 -04:00
David Steele
08d6f14603 Add LibC.template.pm to simplify LibC module generation. 2017-10-10 18:21:44 -04:00
David Steele
8efcc38304 Improvements in C codebase:
* Update C naming conventions.
* Use int datatype wherever possible.
* Better separation of C source from Perl interface.
2017-09-30 10:44:03 -04:00
David Steele
20af8ecf50 Dynamically generate list of files for C library build. 2017-09-17 14:49:23 -04:00
David Steele
1e0ed07455 Configuration rules are now pulled from the C library when present. 2017-08-25 16:47:47 -04:00
David Steele
d3054d919b Fixed missing flag in C library build.
The missing flag resulted in a mismatched binary on 32-bit systems.

Reported by Adrian Vondendriesch.
2017-06-22 12:57:10 -04:00
Adrian Vondendriesch
9b92edddbe Remove Intel-specific optimization from C library build flags.
Contributed by Adrian Vondendriesch.
2017-01-30 17:06:35 -05:00
David Steele
6b99d770b5 Reduced the likelihood of torn pages causing a false positive in page checksums by filtering on start backup LSN. 2017-01-30 13:59:00 -05:00
David Steele
36a5349b1c Added the --checksum-page option.
This option allows pgBackRest to validate page checksums in data files when checksums are enabled on PostgreSQL >= 9.3. Note that this functionality requires a C library which may not initially be available in OS packages. The option will automatically be enabled when the library is present and checksums are enabled on the cluster.
2016-12-12 18:54:07 -05:00